drivers/scsi/ipr.c

   1 /*
   2  * ipr.c -- driver for IBM Power Linux RAID adapters
   3  *
   4  * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
   5  *
   6  * Copyright (C) 2003, 2004 IBM Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 /*
  25  * Notes:
  26  *
  27  * This driver is used to control the following SCSI adapters:
  28  *
  29  * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
  30  *
  31  * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
  32  *              PCI-X Dual Channel Ultra 320 SCSI Adapter
  33  *              PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
  34  *              Embedded SCSI adapter on p615 and p655 systems
  35  *
  36  * Supported Hardware Features:
  37  *      - Ultra 320 SCSI controller
  38  *      - PCI-X host interface
  39  *      - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
  40  *      - Non-Volatile Write Cache
  41  *      - Supports attachment of non-RAID disks, tape, and optical devices
  42  *      - RAID Levels 0, 5, 10
  43  *      - Hot spare
  44  *      - Background Parity Checking
  45  *      - Background Data Scrubbing
  46  *      - Ability to increase the capacity of an existing RAID 5 disk array
  47  *              by adding disks
  48  *
  49  * Driver Features:
  50  *      - Tagged command queuing
  51  *      - Adapter microcode download
  52  *      - PCI hot plug
  53  *      - SCSI device hot plug
  54  *
  55  */
  56
  57 #include <linux/fs.h>
  58 #include <linux/init.h>
  59 #include <linux/types.h>
  60 #include <linux/errno.h>
  61 #include <linux/kernel.h>
  62 #include <linux/slab.h>
  63 #include <linux/vmalloc.h>
  64 #include <linux/ioport.h>
  65 #include <linux/delay.h>
  66 #include <linux/pci.h>
  67 #include <linux/wait.h>
  68 #include <linux/spinlock.h>
  69 #include <linux/sched.h>
  70 #include <linux/interrupt.h>
  71 #include <linux/blkdev.h>
  72 #include <linux/firmware.h>
  73 #include <linux/module.h>
  74 #include <linux/moduleparam.h>
  75 #include <linux/libata.h>
  76 #include <linux/hdreg.h>
  77 #include <linux/reboot.h>
  78 #include <linux/stringify.h>
  79 #include <asm/io.h>
  80 #include <asm/irq.h>
  81 #include <asm/processor.h>
  82 #include <scsi/scsi.h>
  83 #include <scsi/scsi_host.h>
  84 #include <scsi/scsi_tcq.h>
  85 #include <scsi/scsi_eh.h>
  86 #include <scsi/scsi_cmnd.h>
  87 #include "ipr.h"
  88
  89 /*
  90  *   Global Data
  91  */
  92 static LIST_HEAD(ipr_ioa_head);
  93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
  94 static unsigned int ipr_max_speed = 1;
  95 static int ipr_testmode = 0;
  96 static unsigned int ipr_fastfail = 0;
  97 static unsigned int ipr_transop_timeout = 0;
  98 static unsigned int ipr_debug = 0;
  99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
 100 static unsigned int ipr_dual_ioa_raid = 1;
 101 static unsigned int ipr_number_of_msix = 2;
 102 static unsigned int ipr_fast_reboot;
 103 static DEFINE_SPINLOCK(ipr_driver_lock);
 104
 105 /* This table describes the differences between DMA controller chips */
 106 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
 107         { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
 108                 .mailbox = 0x0042C,
 109                 .max_cmds = 100,
 110                 .cache_line_size = 0x20,
 111                 .clear_isr = 1,
 112                 .iopoll_weight = 0,
 113                 {
 114                         .set_interrupt_mask_reg = 0x0022C,
 115                         .clr_interrupt_mask_reg = 0x00230,
 116                         .clr_interrupt_mask_reg32 = 0x00230,
 117                         .sense_interrupt_mask_reg = 0x0022C,
 118                         .sense_interrupt_mask_reg32 = 0x0022C,
 119                         .clr_interrupt_reg = 0x00228,
 120                         .clr_interrupt_reg32 = 0x00228,
 121                         .sense_interrupt_reg = 0x00224,
 122                         .sense_interrupt_reg32 = 0x00224,
 123                         .ioarrin_reg = 0x00404,
 124                         .sense_uproc_interrupt_reg = 0x00214,
 125                         .sense_uproc_interrupt_reg32 = 0x00214,
 126                         .set_uproc_interrupt_reg = 0x00214,
 127                         .set_uproc_interrupt_reg32 = 0x00214,
 128                         .clr_uproc_interrupt_reg = 0x00218,
 129                         .clr_uproc_interrupt_reg32 = 0x00218
 130                 }
 131         },
 132         { /* Snipe and Scamp */
 133                 .mailbox = 0x0052C,
 134                 .max_cmds = 100,
 135                 .cache_line_size = 0x20,
 136                 .clear_isr = 1,
 137                 .iopoll_weight = 0,
 138                 {
 139                         .set_interrupt_mask_reg = 0x00288,
 140                         .clr_interrupt_mask_reg = 0x0028C,
 141                         .clr_interrupt_mask_reg32 = 0x0028C,
 142                         .sense_interrupt_mask_reg = 0x00288,
 143                         .sense_interrupt_mask_reg32 = 0x00288,
 144                         .clr_interrupt_reg = 0x00284,
 145                         .clr_interrupt_reg32 = 0x00284,
 146                         .sense_interrupt_reg = 0x00280,
 147                         .sense_interrupt_reg32 = 0x00280,
 148                         .ioarrin_reg = 0x00504,
 149                         .sense_uproc_interrupt_reg = 0x00290,
 150                         .sense_uproc_interrupt_reg32 = 0x00290,
 151                         .set_uproc_interrupt_reg = 0x00290,
 152                         .set_uproc_interrupt_reg32 = 0x00290,
 153                         .clr_uproc_interrupt_reg = 0x00294,
 154                         .clr_uproc_interrupt_reg32 = 0x00294
 155                 }
 156         },
 157         { /* CRoC */
 158                 .mailbox = 0x00044,
 159                 .max_cmds = 1000,
 160                 .cache_line_size = 0x20,
 161                 .clear_isr = 0,
 162                 .iopoll_weight = 64,
 163                 {
 164                         .set_interrupt_mask_reg = 0x00010,
 165                         .clr_interrupt_mask_reg = 0x00018,
 166                         .clr_interrupt_mask_reg32 = 0x0001C,
 167                         .sense_interrupt_mask_reg = 0x00010,
 168                         .sense_interrupt_mask_reg32 = 0x00014,
 169                         .clr_interrupt_reg = 0x00008,
 170                         .clr_interrupt_reg32 = 0x0000C,
 171                         .sense_interrupt_reg = 0x00000,
 172                         .sense_interrupt_reg32 = 0x00004,
 173                         .ioarrin_reg = 0x00070,
 174                         .sense_uproc_interrupt_reg = 0x00020,
 175                         .sense_uproc_interrupt_reg32 = 0x00024,
 176                         .set_uproc_interrupt_reg = 0x00020,
 177                         .set_uproc_interrupt_reg32 = 0x00024,
 178                         .clr_uproc_interrupt_reg = 0x00028,
 179                         .clr_uproc_interrupt_reg32 = 0x0002C,
 180                         .init_feedback_reg = 0x0005C,
 181                         .dump_addr_reg = 0x00064,
 182                         .dump_data_reg = 0x00068,
 183                         .endian_swap_reg = 0x00084
 184                 }
 185         },
 186 };
 187
 188 static const struct ipr_chip_t ipr_chip[] = {
 189         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 190         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 191         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 192         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 193         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 194         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
 195         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
 196         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
 197         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
 198 };
 199
 200 static int ipr_max_bus_speeds[] = {
 201         IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
 202 };
 203
 204 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
 205 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
 206 module_param_named(max_speed, ipr_max_speed, uint, 0);
 207 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
 208 module_param_named(log_level, ipr_log_level, uint, 0);
 209 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
 210 module_param_named(testmode, ipr_testmode, int, 0);
 211 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
 212 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
 213 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
 214 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
 215 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
 216 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
 217 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
 218 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
 219 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
 220 module_param_named(max_devs, ipr_max_devs, int, 0);
 221 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
 222                  "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
 223 module_param_named(number_of_msix, ipr_number_of_msix, int, 0);
 224 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16).  (default:2)");
 225 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR);
 226 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)");
 227 MODULE_LICENSE("GPL");
 228 MODULE_VERSION(IPR_DRIVER_VERSION);
 229
 230 /*  A constant array of IOASCs/URCs/Error Messages */
 231 static const
 232 struct ipr_error_table_t ipr_error_table[] = {
 233         {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
 234         "8155: An unknown error was received"},
 235         {0x00330000, 0, 0,
 236         "Soft underlength error"},
 237         {0x005A0000, 0, 0,
 238         "Command to be cancelled not found"},
 239         {0x00808000, 0, 0,
 240         "Qualified success"},
 241         {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
 242         "FFFE: Soft device bus error recovered by the IOA"},
 243         {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
 244         "4101: Soft device bus fabric error"},
 245         {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
 246         "FFFC: Logical block guard error recovered by the device"},
 247         {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
 248         "FFFC: Logical block reference tag error recovered by the device"},
 249         {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
 250         "4171: Recovered scatter list tag / sequence number error"},
 251         {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
 252         "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
 253         {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
 254         "4171: Recovered logical block sequence number error on IOA to Host transfer"},
 255         {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
 256         "FFFD: Recovered logical block reference tag error detected by the IOA"},
 257         {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
 258         "FFFD: Logical block guard error recovered by the IOA"},
 259         {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
 260         "FFF9: Device sector reassign successful"},
 261         {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
 262         "FFF7: Media error recovered by device rewrite procedures"},
 263         {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
 264         "7001: IOA sector reassignment successful"},
 265         {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
 266         "FFF9: Soft media error. Sector reassignment recommended"},
 267         {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
 268         "FFF7: Media error recovered by IOA rewrite procedures"},
 269         {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
 270         "FF3D: Soft PCI bus error recovered by the IOA"},
 271         {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
 272         "FFF6: Device hardware error recovered by the IOA"},
 273         {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
 274         "FFF6: Device hardware error recovered by the device"},
 275         {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
 276         "FF3D: Soft IOA error recovered by the IOA"},
 277         {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
 278         "FFFA: Undefined device response recovered by the IOA"},
 279         {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
 280         "FFF6: Device bus error, message or command phase"},
 281         {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
 282         "FFFE: Task Management Function failed"},
 283         {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
 284         "FFF6: Failure prediction threshold exceeded"},
 285         {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
 286         "8009: Impending cache battery pack failure"},
 287         {0x02040100, 0, 0,
 288         "Logical Unit in process of becoming ready"},
 289         {0x02040200, 0, 0,
 290         "Initializing command required"},
 291         {0x02040400, 0, 0,
 292         "34FF: Disk device format in progress"},
 293         {0x02040C00, 0, 0,
 294         "Logical unit not accessible, target port in unavailable state"},
 295         {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
 296         "9070: IOA requested reset"},
 297         {0x023F0000, 0, 0,
 298         "Synchronization required"},
 299         {0x02408500, 0, 0,
 300         "IOA microcode download required"},
 301         {0x02408600, 0, 0,
 302         "Device bus connection is prohibited by host"},
 303         {0x024E0000, 0, 0,
 304         "No ready, IOA shutdown"},
 305         {0x025A0000, 0, 0,
 306         "Not ready, IOA has been shutdown"},
 307         {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
 308         "3020: Storage subsystem configuration error"},
 309         {0x03110B00, 0, 0,
 310         "FFF5: Medium error, data unreadable, recommend reassign"},
 311         {0x03110C00, 0, 0,
 312         "7000: Medium error, data unreadable, do not reassign"},
 313         {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
 314         "FFF3: Disk media format bad"},
 315         {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
 316         "3002: Addressed device failed to respond to selection"},
 317         {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
 318         "3100: Device bus error"},
 319         {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
 320         "3109: IOA timed out a device command"},
 321         {0x04088000, 0, 0,
 322         "3120: SCSI bus is not operational"},
 323         {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
 324         "4100: Hard device bus fabric error"},
 325         {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
 326         "310C: Logical block guard error detected by the device"},
 327         {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
 328         "310C: Logical block reference tag error detected by the device"},
 329         {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
 330         "4170: Scatter list tag / sequence number error"},
 331         {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
 332         "8150: Logical block CRC error on IOA to Host transfer"},
 333         {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
 334         "4170: Logical block sequence number error on IOA to Host transfer"},
 335         {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
 336         "310D: Logical block reference tag error detected by the IOA"},
 337         {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
 338         "310D: Logical block guard error detected by the IOA"},
 339         {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
 340         "9000: IOA reserved area data check"},
 341         {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
 342         "9001: IOA reserved area invalid data pattern"},
 343         {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
 344         "9002: IOA reserved area LRC error"},
 345         {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
 346         "Hardware Error, IOA metadata access error"},
 347         {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
 348         "102E: Out of alternate sectors for disk storage"},
 349         {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
 350         "FFF4: Data transfer underlength error"},
 351         {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
 352         "FFF4: Data transfer overlength error"},
 353         {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
 354         "3400: Logical unit failure"},
 355         {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
 356         "FFF4: Device microcode is corrupt"},
 357         {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
 358         "8150: PCI bus error"},
 359         {0x04430000, 1, 0,
 360         "Unsupported device bus message received"},
 361         {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
 362         "FFF4: Disk device problem"},
 363         {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
 364         "8150: Permanent IOA failure"},
 365         {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
 366         "3010: Disk device returned wrong response to IOA"},
 367         {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
 368         "8151: IOA microcode error"},
 369         {0x04448500, 0, 0,
 370         "Device bus status error"},
 371         {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
 372         "8157: IOA error requiring IOA reset to recover"},
 373         {0x04448700, 0, 0,
 374         "ATA device status error"},
 375         {0x04490000, 0, 0,
 376         "Message reject received from the device"},
 377         {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
 378         "8008: A permanent cache battery pack failure occurred"},
 379         {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
 380         "9090: Disk unit has been modified after the last known status"},
 381         {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
 382         "9081: IOA detected device error"},
 383         {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
 384         "9082: IOA detected device error"},
 385         {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
 386         "3110: Device bus error, message or command phase"},
 387         {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
 388         "3110: SAS Command / Task Management Function failed"},
 389         {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
 390         "9091: Incorrect hardware configuration change has been detected"},
 391         {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
 392         "9073: Invalid multi-adapter configuration"},
 393         {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
 394         "4010: Incorrect connection between cascaded expanders"},
 395         {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
 396         "4020: Connections exceed IOA design limits"},
 397         {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
 398         "4030: Incorrect multipath connection"},
 399         {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
 400         "4110: Unsupported enclosure function"},
 401         {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL,
 402         "4120: SAS cable VPD cannot be read"},
 403         {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
 404         "FFF4: Command to logical unit failed"},
 405         {0x05240000, 1, 0,
 406         "Illegal request, invalid request type or request packet"},
 407         {0x05250000, 0, 0,
 408         "Illegal request, invalid resource handle"},
 409         {0x05258000, 0, 0,
 410         "Illegal request, commands not allowed to this device"},
 411         {0x05258100, 0, 0,
 412         "Illegal request, command not allowed to a secondary adapter"},
 413         {0x05258200, 0, 0,
 414         "Illegal request, command not allowed to a non-optimized resource"},
 415         {0x05260000, 0, 0,
 416         "Illegal request, invalid field in parameter list"},
 417         {0x05260100, 0, 0,
 418         "Illegal request, parameter not supported"},
 419         {0x05260200, 0, 0,
 420         "Illegal request, parameter value invalid"},
 421         {0x052C0000, 0, 0,
 422         "Illegal request, command sequence error"},
 423         {0x052C8000, 1, 0,
 424         "Illegal request, dual adapter support not enabled"},
 425         {0x052C8100, 1, 0,
 426         "Illegal request, another cable connector was physically disabled"},
 427         {0x054E8000, 1, 0,
 428         "Illegal request, inconsistent group id/group count"},
 429         {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
 430         "9031: Array protection temporarily suspended, protection resuming"},
 431         {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
 432         "9040: Array protection temporarily suspended, protection resuming"},
 433         {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL,
 434         "4080: IOA exceeded maximum operating temperature"},
 435         {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL,
 436         "4085: Service required"},
 437         {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
 438         "3140: Device bus not ready to ready transition"},
 439         {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
 440         "FFFB: SCSI bus was reset"},
 441         {0x06290500, 0, 0,
 442         "FFFE: SCSI bus transition to single ended"},
 443         {0x06290600, 0, 0,
 444         "FFFE: SCSI bus transition to LVD"},
 445         {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
 446         "FFFB: SCSI bus was reset by another initiator"},
 447         {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
 448         "3029: A device replacement has occurred"},
 449         {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL,
 450         "4102: Device bus fabric performance degradation"},
 451         {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
 452         "9051: IOA cache data exists for a missing or failed device"},
 453         {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
 454         "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
 455         {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
 456         "9025: Disk unit is not supported at its physical location"},
 457         {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
 458         "3020: IOA detected a SCSI bus configuration error"},
 459         {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
 460         "3150: SCSI bus configuration error"},
 461         {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
 462         "9074: Asymmetric advanced function disk configuration"},
 463         {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
 464         "4040: Incomplete multipath connection between IOA and enclosure"},
 465         {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
 466         "4041: Incomplete multipath connection between enclosure and device"},
 467         {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
 468         "9075: Incomplete multipath connection between IOA and remote IOA"},
 469         {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
 470         "9076: Configuration error, missing remote IOA"},
 471         {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
 472         "4050: Enclosure does not support a required multipath function"},
 473         {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL,
 474         "4121: Configuration error, required cable is missing"},
 475         {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL,
 476         "4122: Cable is not plugged into the correct location on remote IOA"},
 477         {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL,
 478         "4123: Configuration error, invalid cable vital product data"},
 479         {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL,
 480         "4124: Configuration error, both cable ends are plugged into the same IOA"},
 481         {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
 482         "4070: Logically bad block written on device"},
 483         {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
 484         "9041: Array protection temporarily suspended"},
 485         {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
 486         "9042: Corrupt array parity detected on specified device"},
 487         {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
 488         "9030: Array no longer protected due to missing or failed disk unit"},
 489         {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
 490         "9071: Link operational transition"},
 491         {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
 492         "9072: Link not operational transition"},
 493         {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
 494         "9032: Array exposed but still protected"},
 495         {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
 496         "70DD: Device forced failed by disrupt device command"},
 497         {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
 498         "4061: Multipath redundancy level got better"},
 499         {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
 500         "4060: Multipath redundancy level got worse"},
 501         {0x06808100, 0, IPR_DEFAULT_LOG_LEVEL,
 502         "9083: Device raw mode enabled"},
 503         {0x06808200, 0, IPR_DEFAULT_LOG_LEVEL,
 504         "9084: Device raw mode disabled"},
 505         {0x07270000, 0, 0,
 506         "Failure due to other device"},
 507         {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
 508         "9008: IOA does not support functions expected by devices"},
 509         {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
 510         "9010: Cache data associated with attached devices cannot be found"},
 511         {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
 512         "9011: Cache data belongs to devices other than those attached"},
 513         {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
 514         "9020: Array missing 2 or more devices with only 1 device present"},
 515         {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
 516         "9021: Array missing 2 or more devices with 2 or more devices present"},
 517         {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
 518         "9022: Exposed array is missing a required device"},
 519         {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
 520         "9023: Array member(s) not at required physical locations"},
 521         {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
 522         "9024: Array not functional due to present hardware configuration"},
 523         {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
 524         "9026: Array not functional due to present hardware configuration"},
 525         {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
 526         "9027: Array is missing a device and parity is out of sync"},
 527         {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
 528         "9028: Maximum number of arrays already exist"},
 529         {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
 530         "9050: Required cache data cannot be located for a disk unit"},
 531         {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
 532         "9052: Cache data exists for a device that has been modified"},
 533         {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
 534         "9054: IOA resources not available due to previous problems"},
 535         {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
 536         "9092: Disk unit requires initialization before use"},
 537         {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
 538         "9029: Incorrect hardware configuration change has been detected"},
 539         {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
 540         "9060: One or more disk pairs are missing from an array"},
 541         {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
 542         "9061: One or more disks are missing from an array"},
 543         {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
 544         "9062: One or more disks are missing from an array"},
 545         {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
 546         "9063: Maximum number of functional arrays has been exceeded"},
 547         {0x07279A00, 0, 0,
 548         "Data protect, other volume set problem"},
 549         {0x0B260000, 0, 0,
 550         "Aborted command, invalid descriptor"},
 551         {0x0B3F9000, 0, 0,
 552         "Target operating conditions have changed, dual adapter takeover"},
 553         {0x0B530200, 0, 0,
 554         "Aborted command, medium removal prevented"},
 555         {0x0B5A0000, 0, 0,
 556         "Command terminated by host"},
 557         {0x0B5B8000, 0, 0,
 558         "Aborted command, command terminated by host"}
 559 };
 560
 561 static const struct ipr_ses_table_entry ipr_ses_table[] = {
 562         { "2104-DL1        ", "XXXXXXXXXXXXXXXX", 80 },
 563         { "2104-TL1        ", "XXXXXXXXXXXXXXXX", 80 },
 564         { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
 565         { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
 566         { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
 567         { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
 568         { "2104-DU3        ", "XXXXXXXXXXXXXXXX", 160 },
 569         { "2104-TU3        ", "XXXXXXXXXXXXXXXX", 160 },
 570         { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
 571         { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
 572         { "St  V1S2        ", "XXXXXXXXXXXXXXXX", 160 },
 573         { "HSBPD4M  PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
 574         { "VSBPD1H   U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
 575 };
 576
 577 /*
 578  *  Function Prototypes
 579  */
 580 static int ipr_reset_alert(struct ipr_cmnd *);
 581 static void ipr_process_ccn(struct ipr_cmnd *);
 582 static void ipr_process_error(struct ipr_cmnd *);
 583 static void ipr_reset_ioa_job(struct ipr_cmnd *);
 584 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
 585                                    enum ipr_shutdown_type);
 586
 587 #ifdef CONFIG_SCSI_IPR_TRACE
 588 /**
 589  * ipr_trc_hook - Add a trace entry to the driver trace
 590  * @ipr_cmd:    ipr command struct
 591  * @type:               trace type
 592  * @add_data:   additional data
 593  *
 594  * Return value:
 595  *      none
 596  **/
 597 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
 598                          u8 type, u32 add_data)
 599 {
 600         struct ipr_trace_entry *trace_entry;
 601         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 602         unsigned int trace_index;
 603
 604         trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
 605         trace_entry = &ioa_cfg->trace[trace_index];
 606         trace_entry->time = jiffies;
 607         trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
 608         trace_entry->type = type;
 609         if (ipr_cmd->ioa_cfg->sis64)
 610                 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
 611         else
 612                 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
 613         trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
 614         trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
 615         trace_entry->u.add_data = add_data;
 616         wmb();
 617 }
 618 #else
 619 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
 620 #endif
 621
 622 /**
 623  * ipr_lock_and_done - Acquire lock and complete command
 624  * @ipr_cmd:    ipr command struct
 625  *
 626  * Return value:
 627  *      none
 628  **/
 629 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
 630 {
 631         unsigned long lock_flags;
 632         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 633
 634         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
 635         ipr_cmd->done(ipr_cmd);
 636         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
 637 }
 638
 639 /**
 640  * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
 641  * @ipr_cmd:    ipr command struct
 642  *
 643  * Return value:
 644  *      none
 645  **/
 646 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
 647 {
 648         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
 649         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
 650         struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
 651         dma_addr_t dma_addr = ipr_cmd->dma_addr;
 652         int hrrq_id;
 653
 654         hrrq_id = ioarcb->cmd_pkt.hrrq_id;
 655         memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
 656         ioarcb->cmd_pkt.hrrq_id = hrrq_id;
 657         ioarcb->data_transfer_length = 0;
 658         ioarcb->read_data_transfer_length = 0;
 659         ioarcb->ioadl_len = 0;
 660         ioarcb->read_ioadl_len = 0;
 661
 662         if (ipr_cmd->ioa_cfg->sis64) {
 663                 ioarcb->u.sis64_addr_data.data_ioadl_addr =
 664                         cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
 665                 ioasa64->u.gata.status = 0;
 666         } else {
 667                 ioarcb->write_ioadl_addr =
 668                         cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
 669                 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
 670                 ioasa->u.gata.status = 0;
 671         }
 672
 673         ioasa->hdr.ioasc = 0;
 674         ioasa->hdr.residual_data_len = 0;
 675         ipr_cmd->scsi_cmd = NULL;
 676         ipr_cmd->qc = NULL;
 677         ipr_cmd->sense_buffer[0] = 0;
 678         ipr_cmd->dma_use_sg = 0;
 679 }
 680
 681 /**
 682  * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
 683  * @ipr_cmd:    ipr command struct
 684  *
 685  * Return value:
 686  *      none
 687  **/
 688 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
 689                               void (*fast_done) (struct ipr_cmnd *))
 690 {
 691         ipr_reinit_ipr_cmnd(ipr_cmd);
 692         ipr_cmd->u.scratch = 0;
 693         ipr_cmd->sibling = NULL;
 694         ipr_cmd->eh_comp = NULL;
 695         ipr_cmd->fast_done = fast_done;
 696         init_timer(&ipr_cmd->timer);
 697 }
 698
 699 /**
 700  * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
 701  * @ioa_cfg:    ioa config struct
 702  *
 703  * Return value:
 704  *      pointer to ipr command struct
 705  **/
 706 static
 707 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq)
 708 {
 709         struct ipr_cmnd *ipr_cmd = NULL;
 710
 711         if (likely(!list_empty(&hrrq->hrrq_free_q))) {
 712                 ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
 713                         struct ipr_cmnd, queue);
 714                 list_del(&ipr_cmd->queue);
 715         }
 716
 717
 718         return ipr_cmd;
 719 }
 720
 721 /**
 722  * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
 723  * @ioa_cfg:    ioa config struct
 724  *
 725  * Return value:
 726  *      pointer to ipr command struct
 727  **/
 728 static
 729 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
 730 {
 731         struct ipr_cmnd *ipr_cmd =
 732                 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
 733         ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
 734         return ipr_cmd;
 735 }
 736
 737 /**
 738  * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
 739  * @ioa_cfg:    ioa config struct
 740  * @clr_ints:     interrupts to clear
 741  *
 742  * This function masks all interrupts on the adapter, then clears the
 743  * interrupts specified in the mask
 744  *
 745  * Return value:
 746  *      none
 747  **/
 748 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
 749                                           u32 clr_ints)
 750 {
 751         volatile u32 int_reg;
 752         int i;
 753
 754         /* Stop new interrupts */
 755         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
 756                 spin_lock(&ioa_cfg->hrrq[i]._lock);
 757                 ioa_cfg->hrrq[i].allow_interrupts = 0;
 758                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
 759         }
 760         wmb();
 761
 762         /* Set interrupt mask to stop all new interrupts */
 763         if (ioa_cfg->sis64)
 764                 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
 765         else
 766                 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
 767
 768         /* Clear any pending interrupts */
 769         if (ioa_cfg->sis64)
 770                 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
 771         writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
 772         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
 773 }
 774
 775 /**
 776  * ipr_save_pcix_cmd_reg - Save PCI-X command register
 777  * @ioa_cfg:    ioa config struct
 778  *
 779  * Return value:
 780  *      0 on success / -EIO on failure
 781  **/
 782 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
 783 {
 784         int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
 785
 786         if (pcix_cmd_reg == 0)
 787                 return 0;
 788
 789         if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
 790                                  &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
 791                 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
 792                 return -EIO;
 793         }
 794
 795         ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
 796         return 0;
 797 }
 798
 799 /**
 800  * ipr_set_pcix_cmd_reg - Setup PCI-X command register
 801  * @ioa_cfg:    ioa config struct
 802  *
 803  * Return value:
 804  *      0 on success / -EIO on failure
 805  **/
 806 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
 807 {
 808         int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
 809
 810         if (pcix_cmd_reg) {
 811                 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
 812                                           ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
 813                         dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
 814                         return -EIO;
 815                 }
 816         }
 817
 818         return 0;
 819 }
 820
 821 /**
 822  * ipr_sata_eh_done - done function for aborted SATA commands
 823  * @ipr_cmd:    ipr command struct
 824  *
 825  * This function is invoked for ops generated to SATA
 826  * devices which are being aborted.
 827  *
 828  * Return value:
 829  *      none
 830  **/
 831 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
 832 {
 833         struct ata_queued_cmd *qc = ipr_cmd->qc;
 834         struct ipr_sata_port *sata_port = qc->ap->private_data;
 835
 836         qc->err_mask |= AC_ERR_OTHER;
 837         sata_port->ioasa.status |= ATA_BUSY;
 838         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 839         ata_qc_complete(qc);
 840 }
 841
 842 /**
 843  * ipr_scsi_eh_done - mid-layer done function for aborted ops
 844  * @ipr_cmd:    ipr command struct
 845  *
 846  * This function is invoked by the interrupt handler for
 847  * ops generated by the SCSI mid-layer which are being aborted.
 848  *
 849  * Return value:
 850  *      none
 851  **/
 852 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
 853 {
 854         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
 855
 856         scsi_cmd->result |= (DID_ERROR << 16);
 857
 858         scsi_dma_unmap(ipr_cmd->scsi_cmd);
 859         scsi_cmd->scsi_done(scsi_cmd);
 860         if (ipr_cmd->eh_comp)
 861                 complete(ipr_cmd->eh_comp);
 862         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 863 }
 864
 865 /**
 866  * ipr_fail_all_ops - Fails all outstanding ops.
 867  * @ioa_cfg:    ioa config struct
 868  *
 869  * This function fails all outstanding ops.
 870  *
 871  * Return value:
 872  *      none
 873  **/
 874 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
 875 {
 876         struct ipr_cmnd *ipr_cmd, *temp;
 877         struct ipr_hrr_queue *hrrq;
 878
 879         ENTER;
 880         for_each_hrrq(hrrq, ioa_cfg) {
 881                 spin_lock(&hrrq->_lock);
 882                 list_for_each_entry_safe(ipr_cmd,
 883                                         temp, &hrrq->hrrq_pending_q, queue) {
 884                         list_del(&ipr_cmd->queue);
 885
 886                         ipr_cmd->s.ioasa.hdr.ioasc =
 887                                 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
 888                         ipr_cmd->s.ioasa.hdr.ilid =
 889                                 cpu_to_be32(IPR_DRIVER_ILID);
 890
 891                         if (ipr_cmd->scsi_cmd)
 892                                 ipr_cmd->done = ipr_scsi_eh_done;
 893                         else if (ipr_cmd->qc)
 894                                 ipr_cmd->done = ipr_sata_eh_done;
 895
 896                         ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
 897                                      IPR_IOASC_IOA_WAS_RESET);
 898                         del_timer(&ipr_cmd->timer);
 899                         ipr_cmd->done(ipr_cmd);
 900                 }
 901                 spin_unlock(&hrrq->_lock);
 902         }
 903         LEAVE;
 904 }
 905
 906 /**
 907  * ipr_send_command -  Send driver initiated requests.
 908  * @ipr_cmd:            ipr command struct
 909  *
 910  * This function sends a command to the adapter using the correct write call.
 911  * In the case of sis64, calculate the ioarcb size required. Then or in the
 912  * appropriate bits.
 913  *
 914  * Return value:
 915  *      none
 916  **/
 917 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
 918 {
 919         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 920         dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
 921
 922         if (ioa_cfg->sis64) {
 923                 /* The default size is 256 bytes */
 924                 send_dma_addr |= 0x1;
 925
 926                 /* If the number of ioadls * size of ioadl > 128 bytes,
 927                    then use a 512 byte ioarcb */
 928                 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
 929                         send_dma_addr |= 0x4;
 930                 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
 931         } else
 932                 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
 933 }
 934
 935 /**
 936  * ipr_do_req -  Send driver initiated requests.
 937  * @ipr_cmd:            ipr command struct
 938  * @done:                       done function
 939  * @timeout_func:       timeout function
 940  * @timeout:            timeout value
 941  *
 942  * This function sends the specified command to the adapter with the
 943  * timeout given. The done function is invoked on command completion.
 944  *
 945  * Return value:
 946  *      none
 947  **/
 948 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
 949                        void (*done) (struct ipr_cmnd *),
 950                        void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
 951 {
 952         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
 953
 954         ipr_cmd->done = done;
 955
 956         ipr_cmd->timer.data = (unsigned long) ipr_cmd;
 957         ipr_cmd->timer.expires = jiffies + timeout;
 958         ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
 959
 960         add_timer(&ipr_cmd->timer);
 961
 962         ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
 963
 964         ipr_send_command(ipr_cmd);
 965 }
 966
 967 /**
 968  * ipr_internal_cmd_done - Op done function for an internally generated op.
 969  * @ipr_cmd:    ipr command struct
 970  *
 971  * This function is the op done function for an internally generated,
 972  * blocking op. It simply wakes the sleeping thread.
 973  *
 974  * Return value:
 975  *      none
 976  **/
 977 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
 978 {
 979         if (ipr_cmd->sibling)
 980                 ipr_cmd->sibling = NULL;
 981         else
 982                 complete(&ipr_cmd->completion);
 983 }
 984
 985 /**
 986  * ipr_init_ioadl - initialize the ioadl for the correct SIS type
 987  * @ipr_cmd:    ipr command struct
 988  * @dma_addr:   dma address
 989  * @len:        transfer length
 990  * @flags:      ioadl flag value
 991  *
 992  * This function initializes an ioadl in the case where there is only a single
 993  * descriptor.
 994  *
 995  * Return value:
 996  *      nothing
 997  **/
 998 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
 999                            u32 len, int flags)
1000 {
1001         struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1002         struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
1003
1004         ipr_cmd->dma_use_sg = 1;
1005
1006         if (ipr_cmd->ioa_cfg->sis64) {
1007                 ioadl64->flags = cpu_to_be32(flags);
1008                 ioadl64->data_len = cpu_to_be32(len);
1009                 ioadl64->address = cpu_to_be64(dma_addr);
1010
1011                 ipr_cmd->ioarcb.ioadl_len =
1012                         cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
1013                 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1014         } else {
1015                 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
1016                 ioadl->address = cpu_to_be32(dma_addr);
1017
1018                 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
1019                         ipr_cmd->ioarcb.read_ioadl_len =
1020                                 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1021                         ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
1022                 } else {
1023                         ipr_cmd->ioarcb.ioadl_len =
1024                                 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1025                         ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1026                 }
1027         }
1028 }
1029
1030 /**
1031  * ipr_send_blocking_cmd - Send command and sleep on its completion.
1032  * @ipr_cmd:    ipr command struct
1033  * @timeout_func:       function to invoke if command times out
1034  * @timeout:    timeout
1035  *
1036  * Return value:
1037  *      none
1038  **/
1039 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
1040                                   void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
1041                                   u32 timeout)
1042 {
1043         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1044
1045         init_completion(&ipr_cmd->completion);
1046         ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
1047
1048         spin_unlock_irq(ioa_cfg->host->host_lock);
1049         wait_for_completion(&ipr_cmd->completion);
1050         spin_lock_irq(ioa_cfg->host->host_lock);
1051 }
1052
1053 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
1054 {
1055         unsigned int hrrq;
1056
1057         if (ioa_cfg->hrrq_num == 1)
1058                 hrrq = 0;
1059         else {
1060                 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index);
1061                 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1;
1062         }
1063         return hrrq;
1064 }
1065
1066 /**
1067  * ipr_send_hcam - Send an HCAM to the adapter.
1068  * @ioa_cfg:    ioa config struct
1069  * @type:               HCAM type
1070  * @hostrcb:    hostrcb struct
1071  *
1072  * This function will send a Host Controlled Async command to the adapter.
1073  * If HCAMs are currently not allowed to be issued to the adapter, it will
1074  * place the hostrcb on the free queue.
1075  *
1076  * Return value:
1077  *      none
1078  **/
1079 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
1080                           struct ipr_hostrcb *hostrcb)
1081 {
1082         struct ipr_cmnd *ipr_cmd;
1083         struct ipr_ioarcb *ioarcb;
1084
1085         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
1086                 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
1087                 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
1088                 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
1089
1090                 ipr_cmd->u.hostrcb = hostrcb;
1091                 ioarcb = &ipr_cmd->ioarcb;
1092
1093                 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
1094                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
1095                 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
1096                 ioarcb->cmd_pkt.cdb[1] = type;
1097                 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
1098                 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
1099
1100                 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
1101                                sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1102
1103                 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
1104                         ipr_cmd->done = ipr_process_ccn;
1105                 else
1106                         ipr_cmd->done = ipr_process_error;
1107
1108                 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
1109
1110                 ipr_send_command(ipr_cmd);
1111         } else {
1112                 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
1113         }
1114 }
1115
1116 /**
1117  * ipr_update_ata_class - Update the ata class in the resource entry
1118  * @res:        resource entry struct
1119  * @proto:      cfgte device bus protocol value
1120  *
1121  * Return value:
1122  *      none
1123  **/
1124 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1125 {
1126         switch (proto) {
1127         case IPR_PROTO_SATA:
1128         case IPR_PROTO_SAS_STP:
1129                 res->ata_class = ATA_DEV_ATA;
1130                 break;
1131         case IPR_PROTO_SATA_ATAPI:
1132         case IPR_PROTO_SAS_STP_ATAPI:
1133                 res->ata_class = ATA_DEV_ATAPI;
1134                 break;
1135         default:
1136                 res->ata_class = ATA_DEV_UNKNOWN;
1137                 break;
1138         };
1139 }
1140
1141 /**
1142  * ipr_init_res_entry - Initialize a resource entry struct.
1143  * @res:        resource entry struct
1144  * @cfgtew:     config table entry wrapper struct
1145  *
1146  * Return value:
1147  *      none
1148  **/
1149 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1150                                struct ipr_config_table_entry_wrapper *cfgtew)
1151 {
1152         int found = 0;
1153         unsigned int proto;
1154         struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1155         struct ipr_resource_entry *gscsi_res = NULL;
1156
1157         res->needs_sync_complete = 0;
1158         res->in_erp = 0;
1159         res->add_to_ml = 0;
1160         res->del_from_ml = 0;
1161         res->resetting_device = 0;
1162         res->reset_occurred = 0;
1163         res->sdev = NULL;
1164         res->sata_port = NULL;
1165
1166         if (ioa_cfg->sis64) {
1167                 proto = cfgtew->u.cfgte64->proto;
1168                 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1169                 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1170                 res->qmodel = IPR_QUEUEING_MODEL64(res);
1171                 res->type = cfgtew->u.cfgte64->res_type;
1172
1173                 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1174                         sizeof(res->res_path));
1175
1176                 res->bus = 0;
1177                 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1178                         sizeof(res->dev_lun.scsi_lun));
1179                 res->lun = scsilun_to_int(&res->dev_lun);
1180
1181                 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1182                         list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1183                                 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1184                                         found = 1;
1185                                         res->target = gscsi_res->target;
1186                                         break;
1187                                 }
1188                         }
1189                         if (!found) {
1190                                 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1191                                                                   ioa_cfg->max_devs_supported);
1192                                 set_bit(res->target, ioa_cfg->target_ids);
1193                         }
1194                 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1195                         res->bus = IPR_IOAFP_VIRTUAL_BUS;
1196                         res->target = 0;
1197                 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1198                         res->bus = IPR_ARRAY_VIRTUAL_BUS;
1199                         res->target = find_first_zero_bit(ioa_cfg->array_ids,
1200                                                           ioa_cfg->max_devs_supported);
1201                         set_bit(res->target, ioa_cfg->array_ids);
1202                 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1203                         res->bus = IPR_VSET_VIRTUAL_BUS;
1204                         res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1205                                                           ioa_cfg->max_devs_supported);
1206                         set_bit(res->target, ioa_cfg->vset_ids);
1207                 } else {
1208                         res->target = find_first_zero_bit(ioa_cfg->target_ids,
1209                                                           ioa_cfg->max_devs_supported);
1210                         set_bit(res->target, ioa_cfg->target_ids);
1211                 }
1212         } else {
1213                 proto = cfgtew->u.cfgte->proto;
1214                 res->qmodel = IPR_QUEUEING_MODEL(res);
1215                 res->flags = cfgtew->u.cfgte->flags;
1216                 if (res->flags & IPR_IS_IOA_RESOURCE)
1217                         res->type = IPR_RES_TYPE_IOAFP;
1218                 else
1219                         res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1220
1221                 res->bus = cfgtew->u.cfgte->res_addr.bus;
1222                 res->target = cfgtew->u.cfgte->res_addr.target;
1223                 res->lun = cfgtew->u.cfgte->res_addr.lun;
1224                 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1225         }
1226
1227         ipr_update_ata_class(res, proto);
1228 }
1229
1230 /**
1231  * ipr_is_same_device - Determine if two devices are the same.
1232  * @res:        resource entry struct
1233  * @cfgtew:     config table entry wrapper struct
1234  *
1235  * Return value:
1236  *      1 if the devices are the same / 0 otherwise
1237  **/
1238 static int ipr_is_same_device(struct ipr_resource_entry *res,
1239                               struct ipr_config_table_entry_wrapper *cfgtew)
1240 {
1241         if (res->ioa_cfg->sis64) {
1242                 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1243                                         sizeof(cfgtew->u.cfgte64->dev_id)) &&
1244                         !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1245                                         sizeof(cfgtew->u.cfgte64->lun))) {
1246                         return 1;
1247                 }
1248         } else {
1249                 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1250                     res->target == cfgtew->u.cfgte->res_addr.target &&
1251                     res->lun == cfgtew->u.cfgte->res_addr.lun)
1252                         return 1;
1253         }
1254
1255         return 0;
1256 }
1257
1258 /**
1259  * __ipr_format_res_path - Format the resource path for printing.
1260  * @res_path:   resource path
1261  * @buf:        buffer
1262  * @len:        length of buffer provided
1263  *
1264  * Return value:
1265  *      pointer to buffer
1266  **/
1267 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len)
1268 {
1269         int i;
1270         char *p = buffer;
1271
1272         *p = '\0';
1273         p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1274         for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1275                 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1276
1277         return buffer;
1278 }
1279
1280 /**
1281  * ipr_format_res_path - Format the resource path for printing.
1282  * @ioa_cfg:    ioa config struct
1283  * @res_path:   resource path
1284  * @buf:        buffer
1285  * @len:        length of buffer provided
1286  *
1287  * Return value:
1288  *      pointer to buffer
1289  **/
1290 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg,
1291                                  u8 *res_path, char *buffer, int len)
1292 {
1293         char *p = buffer;
1294
1295         *p = '\0';
1296         p += snprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no);
1297         __ipr_format_res_path(res_path, p, len - (buffer - p));
1298         return buffer;
1299 }
1300
1301 /**
1302  * ipr_update_res_entry - Update the resource entry.
1303  * @res:        resource entry struct
1304  * @cfgtew:     config table entry wrapper struct
1305  *
1306  * Return value:
1307  *      none
1308  **/
1309 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1310                                  struct ipr_config_table_entry_wrapper *cfgtew)
1311 {
1312         char buffer[IPR_MAX_RES_PATH_LENGTH];
1313         unsigned int proto;
1314         int new_path = 0;
1315
1316         if (res->ioa_cfg->sis64) {
1317                 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1318                 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1319                 res->type = cfgtew->u.cfgte64->res_type;
1320
1321                 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1322                         sizeof(struct ipr_std_inq_data));
1323
1324                 res->qmodel = IPR_QUEUEING_MODEL64(res);
1325                 proto = cfgtew->u.cfgte64->proto;
1326                 res->res_handle = cfgtew->u.cfgte64->res_handle;
1327                 res->dev_id = cfgtew->u.cfgte64->dev_id;
1328
1329                 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1330                         sizeof(res->dev_lun.scsi_lun));
1331
1332                 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1333                                         sizeof(res->res_path))) {
1334                         memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1335                                 sizeof(res->res_path));
1336                         new_path = 1;
1337                 }
1338
1339                 if (res->sdev && new_path)
1340                         sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1341                                     ipr_format_res_path(res->ioa_cfg,
1342                                         res->res_path, buffer, sizeof(buffer)));
1343         } else {
1344                 res->flags = cfgtew->u.cfgte->flags;
1345                 if (res->flags & IPR_IS_IOA_RESOURCE)
1346                         res->type = IPR_RES_TYPE_IOAFP;
1347                 else
1348                         res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1349
1350                 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1351                         sizeof(struct ipr_std_inq_data));
1352
1353                 res->qmodel = IPR_QUEUEING_MODEL(res);
1354                 proto = cfgtew->u.cfgte->proto;
1355                 res->res_handle = cfgtew->u.cfgte->res_handle;
1356         }
1357
1358         ipr_update_ata_class(res, proto);
1359 }
1360
1361 /**
1362  * ipr_clear_res_target - Clear the bit in the bit map representing the target
1363  *                        for the resource.
1364  * @res:        resource entry struct
1365  * @cfgtew:     config table entry wrapper struct
1366  *
1367  * Return value:
1368  *      none
1369  **/
1370 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1371 {
1372         struct ipr_resource_entry *gscsi_res = NULL;
1373         struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1374
1375         if (!ioa_cfg->sis64)
1376                 return;
1377
1378         if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1379                 clear_bit(res->target, ioa_cfg->array_ids);
1380         else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1381                 clear_bit(res->target, ioa_cfg->vset_ids);
1382         else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1383                 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1384                         if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1385                                 return;
1386                 clear_bit(res->target, ioa_cfg->target_ids);
1387
1388         } else if (res->bus == 0)
1389                 clear_bit(res->target, ioa_cfg->target_ids);
1390 }
1391
1392 /**
1393  * ipr_handle_config_change - Handle a config change from the adapter
1394  * @ioa_cfg:    ioa config struct
1395  * @hostrcb:    hostrcb
1396  *
1397  * Return value:
1398  *      none
1399  **/
1400 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1401                                      struct ipr_hostrcb *hostrcb)
1402 {
1403         struct ipr_resource_entry *res = NULL;
1404         struct ipr_config_table_entry_wrapper cfgtew;
1405         __be32 cc_res_handle;
1406
1407         u32 is_ndn = 1;
1408
1409         if (ioa_cfg->sis64) {
1410                 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1411                 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1412         } else {
1413                 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1414                 cc_res_handle = cfgtew.u.cfgte->res_handle;
1415         }
1416
1417         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1418                 if (res->res_handle == cc_res_handle) {
1419                         is_ndn = 0;
1420                         break;
1421                 }
1422         }
1423
1424         if (is_ndn) {
1425                 if (list_empty(&ioa_cfg->free_res_q)) {
1426                         ipr_send_hcam(ioa_cfg,
1427                                       IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1428                                       hostrcb);
1429                         return;
1430                 }
1431
1432                 res = list_entry(ioa_cfg->free_res_q.next,
1433                                  struct ipr_resource_entry, queue);
1434
1435                 list_del(&res->queue);
1436                 ipr_init_res_entry(res, &cfgtew);
1437                 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1438         }
1439
1440         ipr_update_res_entry(res, &cfgtew);
1441
1442         if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1443                 if (res->sdev) {
1444                         res->del_from_ml = 1;
1445                         res->res_handle = IPR_INVALID_RES_HANDLE;
1446                         schedule_work(&ioa_cfg->work_q);
1447                 } else {
1448                         ipr_clear_res_target(res);
1449                         list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1450                 }
1451         } else if (!res->sdev || res->del_from_ml) {
1452                 res->add_to_ml = 1;
1453                 schedule_work(&ioa_cfg->work_q);
1454         }
1455
1456         ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1457 }
1458
1459 /**
1460  * ipr_process_ccn - Op done function for a CCN.
1461  * @ipr_cmd:    ipr command struct
1462  *
1463  * This function is the op done function for a configuration
1464  * change notification host controlled async from the adapter.
1465  *
1466  * Return value:
1467  *      none
1468  **/
1469 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1470 {
1471         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1472         struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1473         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1474
1475         list_del(&hostrcb->queue);
1476         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
1477
1478         if (ioasc) {
1479                 if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
1480                     ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST)
1481                         dev_err(&ioa_cfg->pdev->dev,
1482                                 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1483
1484                 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1485         } else {
1486                 ipr_handle_config_change(ioa_cfg, hostrcb);
1487         }
1488 }
1489
1490 /**
1491  * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1492  * @i:          index into buffer
1493  * @buf:                string to modify
1494  *
1495  * This function will strip all trailing whitespace, pad the end
1496  * of the string with a single space, and NULL terminate the string.
1497  *
1498  * Return value:
1499  *      new length of string
1500  **/
1501 static int strip_and_pad_whitespace(int i, char *buf)
1502 {
1503         while (i && buf[i] == ' ')
1504                 i--;
1505         buf[i+1] = ' ';
1506         buf[i+2] = '\0';
1507         return i + 2;
1508 }
1509
1510 /**
1511  * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1512  * @prefix:             string to print at start of printk
1513  * @hostrcb:    hostrcb pointer
1514  * @vpd:                vendor/product id/sn struct
1515  *
1516  * Return value:
1517  *      none
1518  **/
1519 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1520                                 struct ipr_vpd *vpd)
1521 {
1522         char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1523         int i = 0;
1524
1525         memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1526         i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1527
1528         memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1529         i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1530
1531         memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1532         buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1533
1534         ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1535 }
1536
1537 /**
1538  * ipr_log_vpd - Log the passed VPD to the error log.
1539  * @vpd:                vendor/product id/sn struct
1540  *
1541  * Return value:
1542  *      none
1543  **/
1544 static void ipr_log_vpd(struct ipr_vpd *vpd)
1545 {
1546         char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1547                     + IPR_SERIAL_NUM_LEN];
1548
1549         memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1550         memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1551                IPR_PROD_ID_LEN);
1552         buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1553         ipr_err("Vendor/Product ID: %s\n", buffer);
1554
1555         memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1556         buffer[IPR_SERIAL_NUM_LEN] = '\0';
1557         ipr_err("    Serial Number: %s\n", buffer);
1558 }
1559
1560 /**
1561  * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1562  * @prefix:             string to print at start of printk
1563  * @hostrcb:    hostrcb pointer
1564  * @vpd:                vendor/product id/sn/wwn struct
1565  *
1566  * Return value:
1567  *      none
1568  **/
1569 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1570                                     struct ipr_ext_vpd *vpd)
1571 {
1572         ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1573         ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1574                      be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1575 }
1576
1577 /**
1578  * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1579  * @vpd:                vendor/product id/sn/wwn struct
1580  *
1581  * Return value:
1582  *      none
1583  **/
1584 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1585 {
1586         ipr_log_vpd(&vpd->vpd);
1587         ipr_err("    WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1588                 be32_to_cpu(vpd->wwid[1]));
1589 }
1590
1591 /**
1592  * ipr_log_enhanced_cache_error - Log a cache error.
1593  * @ioa_cfg:    ioa config struct
1594  * @hostrcb:    hostrcb struct
1595  *
1596  * Return value:
1597  *      none
1598  **/
1599 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1600                                          struct ipr_hostrcb *hostrcb)
1601 {
1602         struct ipr_hostrcb_type_12_error *error;
1603
1604         if (ioa_cfg->sis64)
1605                 error = &hostrcb->hcam.u.error64.u.type_12_error;
1606         else
1607                 error = &hostrcb->hcam.u.error.u.type_12_error;
1608
1609         ipr_err("-----Current Configuration-----\n");
1610         ipr_err("Cache Directory Card Information:\n");
1611         ipr_log_ext_vpd(&error->ioa_vpd);
1612         ipr_err("Adapter Card Information:\n");
1613         ipr_log_ext_vpd(&error->cfc_vpd);
1614
1615         ipr_err("-----Expected Configuration-----\n");
1616         ipr_err("Cache Directory Card Information:\n");
1617         ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1618         ipr_err("Adapter Card Information:\n");
1619         ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1620
1621         ipr_err("Additional IOA Data: %08X %08X %08X\n",
1622                      be32_to_cpu(error->ioa_data[0]),
1623                      be32_to_cpu(error->ioa_data[1]),
1624                      be32_to_cpu(error->ioa_data[2]));
1625 }
1626
1627 /**
1628  * ipr_log_cache_error - Log a cache error.
1629  * @ioa_cfg:    ioa config struct
1630  * @hostrcb:    hostrcb struct
1631  *
1632  * Return value:
1633  *      none
1634  **/
1635 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1636                                 struct ipr_hostrcb *hostrcb)
1637 {
1638         struct ipr_hostrcb_type_02_error *error =
1639                 &hostrcb->hcam.u.error.u.type_02_error;
1640
1641         ipr_err("-----Current Configuration-----\n");
1642         ipr_err("Cache Directory Card Information:\n");
1643         ipr_log_vpd(&error->ioa_vpd);
1644         ipr_err("Adapter Card Information:\n");
1645         ipr_log_vpd(&error->cfc_vpd);
1646
1647         ipr_err("-----Expected Configuration-----\n");
1648         ipr_err("Cache Directory Card Information:\n");
1649         ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1650         ipr_err("Adapter Card Information:\n");
1651         ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1652
1653         ipr_err("Additional IOA Data: %08X %08X %08X\n",
1654                      be32_to_cpu(error->ioa_data[0]),
1655                      be32_to_cpu(error->ioa_data[1]),
1656                      be32_to_cpu(error->ioa_data[2]));
1657 }
1658
1659 /**
1660  * ipr_log_enhanced_config_error - Log a configuration error.
1661  * @ioa_cfg:    ioa config struct
1662  * @hostrcb:    hostrcb struct
1663  *
1664  * Return value:
1665  *      none
1666  **/
1667 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1668                                           struct ipr_hostrcb *hostrcb)
1669 {
1670         int errors_logged, i;
1671         struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1672         struct ipr_hostrcb_type_13_error *error;
1673
1674         error = &hostrcb->hcam.u.error.u.type_13_error;
1675         errors_logged = be32_to_cpu(error->errors_logged);
1676
1677         ipr_err("Device Errors Detected/Logged: %d/%d\n",
1678                 be32_to_cpu(error->errors_detected), errors_logged);
1679
1680         dev_entry = error->dev;
1681
1682         for (i = 0; i < errors_logged; i++, dev_entry++) {
1683                 ipr_err_separator;
1684
1685                 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1686                 ipr_log_ext_vpd(&dev_entry->vpd);
1687
1688                 ipr_err("-----New Device Information-----\n");
1689                 ipr_log_ext_vpd(&dev_entry->new_vpd);
1690
1691                 ipr_err("Cache Directory Card Information:\n");
1692                 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1693
1694                 ipr_err("Adapter Card Information:\n");
1695                 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1696         }
1697 }
1698
1699 /**
1700  * ipr_log_sis64_config_error - Log a device error.
1701  * @ioa_cfg:    ioa config struct
1702  * @hostrcb:    hostrcb struct
1703  *
1704  * Return value:
1705  *      none
1706  **/
1707 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1708                                        struct ipr_hostrcb *hostrcb)
1709 {
1710         int errors_logged, i;
1711         struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1712         struct ipr_hostrcb_type_23_error *error;
1713         char buffer[IPR_MAX_RES_PATH_LENGTH];
1714
1715         error = &hostrcb->hcam.u.error64.u.type_23_error;
1716         errors_logged = be32_to_cpu(error->errors_logged);
1717
1718         ipr_err("Device Errors Detected/Logged: %d/%d\n",
1719                 be32_to_cpu(error->errors_detected), errors_logged);
1720
1721         dev_entry = error->dev;
1722
1723         for (i = 0; i < errors_logged; i++, dev_entry++) {
1724                 ipr_err_separator;
1725
1726                 ipr_err("Device %d : %s", i + 1,
1727                         __ipr_format_res_path(dev_entry->res_path,
1728                                               buffer, sizeof(buffer)));
1729                 ipr_log_ext_vpd(&dev_entry->vpd);
1730
1731                 ipr_err("-----New Device Information-----\n");
1732                 ipr_log_ext_vpd(&dev_entry->new_vpd);
1733
1734                 ipr_err("Cache Directory Card Information:\n");
1735                 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1736
1737                 ipr_err("Adapter Card Information:\n");
1738                 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1739         }
1740 }
1741
1742 /**
1743  * ipr_log_config_error - Log a configuration error.
1744  * @ioa_cfg:    ioa config struct
1745  * @hostrcb:    hostrcb struct
1746  *
1747  * Return value:
1748  *      none
1749  **/
1750 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1751                                  struct ipr_hostrcb *hostrcb)
1752 {
1753         int errors_logged, i;
1754         struct ipr_hostrcb_device_data_entry *dev_entry;
1755         struct ipr_hostrcb_type_03_error *error;
1756
1757         error = &hostrcb->hcam.u.error.u.type_03_error;
1758         errors_logged = be32_to_cpu(error->errors_logged);
1759
1760         ipr_err("Device Errors Detected/Logged: %d/%d\n",
1761                 be32_to_cpu(error->errors_detected), errors_logged);
1762
1763         dev_entry = error->dev;
1764
1765         for (i = 0; i < errors_logged; i++, dev_entry++) {
1766                 ipr_err_separator;
1767
1768                 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1769                 ipr_log_vpd(&dev_entry->vpd);
1770
1771                 ipr_err("-----New Device Information-----\n");
1772                 ipr_log_vpd(&dev_entry->new_vpd);
1773
1774                 ipr_err("Cache Directory Card Information:\n");
1775                 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1776
1777                 ipr_err("Adapter Card Information:\n");
1778                 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1779
1780                 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1781                         be32_to_cpu(dev_entry->ioa_data[0]),
1782                         be32_to_cpu(dev_entry->ioa_data[1]),
1783                         be32_to_cpu(dev_entry->ioa_data[2]),
1784                         be32_to_cpu(dev_entry->ioa_data[3]),
1785                         be32_to_cpu(dev_entry->ioa_data[4]));
1786         }
1787 }
1788
1789 /**
1790  * ipr_log_enhanced_array_error - Log an array configuration error.
1791  * @ioa_cfg:    ioa config struct
1792  * @hostrcb:    hostrcb struct
1793  *
1794  * Return value:
1795  *      none
1796  **/
1797 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1798                                          struct ipr_hostrcb *hostrcb)
1799 {
1800         int i, num_entries;
1801         struct ipr_hostrcb_type_14_error *error;
1802         struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1803         const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1804
1805         error = &hostrcb->hcam.u.error.u.type_14_error;
1806
1807         ipr_err_separator;
1808
1809         ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1810                 error->protection_level,
1811                 ioa_cfg->host->host_no,
1812                 error->last_func_vset_res_addr.bus,
1813                 error->last_func_vset_res_addr.target,
1814                 error->last_func_vset_res_addr.lun);
1815
1816         ipr_err_separator;
1817
1818         array_entry = error->array_member;
1819         num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1820                             ARRAY_SIZE(error->array_member));
1821
1822         for (i = 0; i < num_entries; i++, array_entry++) {
1823                 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1824                         continue;
1825
1826                 if (be32_to_cpu(error->exposed_mode_adn) == i)
1827                         ipr_err("Exposed Array Member %d:\n", i);
1828                 else
1829                         ipr_err("Array Member %d:\n", i);
1830
1831                 ipr_log_ext_vpd(&array_entry->vpd);
1832                 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1833                 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1834                                  "Expected Location");
1835
1836                 ipr_err_separator;
1837         }
1838 }
1839
1840 /**
1841  * ipr_log_array_error - Log an array configuration error.
1842  * @ioa_cfg:    ioa config struct
1843  * @hostrcb:    hostrcb struct
1844  *
1845  * Return value:
1846  *      none
1847  **/
1848 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1849                                 struct ipr_hostrcb *hostrcb)
1850 {
1851         int i;
1852         struct ipr_hostrcb_type_04_error *error;
1853         struct ipr_hostrcb_array_data_entry *array_entry;
1854         const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1855
1856         error = &hostrcb->hcam.u.error.u.type_04_error;
1857
1858         ipr_err_separator;
1859
1860         ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1861                 error->protection_level,
1862                 ioa_cfg->host->host_no,
1863                 error->last_func_vset_res_addr.bus,
1864                 error->last_func_vset_res_addr.target,
1865                 error->last_func_vset_res_addr.lun);
1866
1867         ipr_err_separator;
1868
1869         array_entry = error->array_member;
1870
1871         for (i = 0; i < 18; i++) {
1872                 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1873                         continue;
1874
1875                 if (be32_to_cpu(error->exposed_mode_adn) == i)
1876                         ipr_err("Exposed Array Member %d:\n", i);
1877                 else
1878                         ipr_err("Array Member %d:\n", i);
1879
1880                 ipr_log_vpd(&array_entry->vpd);
1881
1882                 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1883                 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1884                                  "Expected Location");
1885
1886                 ipr_err_separator;
1887
1888                 if (i == 9)
1889                         array_entry = error->array_member2;
1890                 else
1891                         array_entry++;
1892         }
1893 }
1894
1895 /**
1896  * ipr_log_hex_data - Log additional hex IOA error data.
1897  * @ioa_cfg:    ioa config struct
1898  * @data:               IOA error data
1899  * @len:                data length
1900  *
1901  * Return value:
1902  *      none
1903  **/
1904 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len)
1905 {
1906         int i;
1907
1908         if (len == 0)
1909                 return;
1910
1911         if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1912                 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1913
1914         for (i = 0; i < len / 4; i += 4) {
1915                 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1916                         be32_to_cpu(data[i]),
1917                         be32_to_cpu(data[i+1]),
1918                         be32_to_cpu(data[i+2]),
1919                         be32_to_cpu(data[i+3]));
1920         }
1921 }
1922
1923 /**
1924  * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1925  * @ioa_cfg:    ioa config struct
1926  * @hostrcb:    hostrcb struct
1927  *
1928  * Return value:
1929  *      none
1930  **/
1931 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1932                                             struct ipr_hostrcb *hostrcb)
1933 {
1934         struct ipr_hostrcb_type_17_error *error;
1935
1936         if (ioa_cfg->sis64)
1937                 error = &hostrcb->hcam.u.error64.u.type_17_error;
1938         else
1939                 error = &hostrcb->hcam.u.error.u.type_17_error;
1940
1941         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1942         strim(error->failure_reason);
1943
1944         ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1945                      be32_to_cpu(hostrcb->hcam.u.error.prc));
1946         ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1947         ipr_log_hex_data(ioa_cfg, error->data,
1948                          be32_to_cpu(hostrcb->hcam.length) -
1949                          (offsetof(struct ipr_hostrcb_error, u) +
1950                           offsetof(struct ipr_hostrcb_type_17_error, data)));
1951 }
1952
1953 /**
1954  * ipr_log_dual_ioa_error - Log a dual adapter error.
1955  * @ioa_cfg:    ioa config struct
1956  * @hostrcb:    hostrcb struct
1957  *
1958  * Return value:
1959  *      none
1960  **/
1961 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1962                                    struct ipr_hostrcb *hostrcb)
1963 {
1964         struct ipr_hostrcb_type_07_error *error;
1965
1966         error = &hostrcb->hcam.u.error.u.type_07_error;
1967         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1968         strim(error->failure_reason);
1969
1970         ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1971                      be32_to_cpu(hostrcb->hcam.u.error.prc));
1972         ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1973         ipr_log_hex_data(ioa_cfg, error->data,
1974                          be32_to_cpu(hostrcb->hcam.length) -
1975                          (offsetof(struct ipr_hostrcb_error, u) +
1976                           offsetof(struct ipr_hostrcb_type_07_error, data)));
1977 }
1978
1979 static const struct {
1980         u8 active;
1981         char *desc;
1982 } path_active_desc[] = {
1983         { IPR_PATH_NO_INFO, "Path" },
1984         { IPR_PATH_ACTIVE, "Active path" },
1985         { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1986 };
1987
1988 static const struct {
1989         u8 state;
1990         char *desc;
1991 } path_state_desc[] = {
1992         { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1993         { IPR_PATH_HEALTHY, "is healthy" },
1994         { IPR_PATH_DEGRADED, "is degraded" },
1995         { IPR_PATH_FAILED, "is failed" }
1996 };
1997
1998 /**
1999  * ipr_log_fabric_path - Log a fabric path error
2000  * @hostrcb:    hostrcb struct
2001  * @fabric:             fabric descriptor
2002  *
2003  * Return value:
2004  *      none
2005  **/
2006 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
2007                                 struct ipr_hostrcb_fabric_desc *fabric)
2008 {
2009         int i, j;
2010         u8 path_state = fabric->path_state;
2011         u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2012         u8 state = path_state & IPR_PATH_STATE_MASK;
2013
2014         for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2015                 if (path_active_desc[i].active != active)
2016                         continue;
2017
2018                 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2019                         if (path_state_desc[j].state != state)
2020                                 continue;
2021
2022                         if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
2023                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
2024                                              path_active_desc[i].desc, path_state_desc[j].desc,
2025                                              fabric->ioa_port);
2026                         } else if (fabric->cascaded_expander == 0xff) {
2027                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
2028                                              path_active_desc[i].desc, path_state_desc[j].desc,
2029                                              fabric->ioa_port, fabric->phy);
2030                         } else if (fabric->phy == 0xff) {
2031                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
2032                                              path_active_desc[i].desc, path_state_desc[j].desc,
2033                                              fabric->ioa_port, fabric->cascaded_expander);
2034                         } else {
2035                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
2036                                              path_active_desc[i].desc, path_state_desc[j].desc,
2037                                              fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2038                         }
2039                         return;
2040                 }
2041         }
2042
2043         ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
2044                 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2045 }
2046
2047 /**
2048  * ipr_log64_fabric_path - Log a fabric path error
2049  * @hostrcb:    hostrcb struct
2050  * @fabric:             fabric descriptor
2051  *
2052  * Return value:
2053  *      none
2054  **/
2055 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
2056                                   struct ipr_hostrcb64_fabric_desc *fabric)
2057 {
2058         int i, j;
2059         u8 path_state = fabric->path_state;
2060         u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2061         u8 state = path_state & IPR_PATH_STATE_MASK;
2062         char buffer[IPR_MAX_RES_PATH_LENGTH];
2063
2064         for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2065                 if (path_active_desc[i].active != active)
2066                         continue;
2067
2068                 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2069                         if (path_state_desc[j].state != state)
2070                                 continue;
2071
2072                         ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
2073                                      path_active_desc[i].desc, path_state_desc[j].desc,
2074                                      ipr_format_res_path(hostrcb->ioa_cfg,
2075                                                 fabric->res_path,
2076                                                 buffer, sizeof(buffer)));
2077                         return;
2078                 }
2079         }
2080
2081         ipr_err("Path state=%02X Resource Path=%s\n", path_state,
2082                 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path,
2083                                     buffer, sizeof(buffer)));
2084 }
2085
2086 static const struct {
2087         u8 type;
2088         char *desc;
2089 } path_type_desc[] = {
2090         { IPR_PATH_CFG_IOA_PORT, "IOA port" },
2091         { IPR_PATH_CFG_EXP_PORT, "Expander port" },
2092         { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
2093         { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
2094 };
2095
2096 static const struct {
2097         u8 status;
2098         char *desc;
2099 } path_status_desc[] = {
2100         { IPR_PATH_CFG_NO_PROB, "Functional" },
2101         { IPR_PATH_CFG_DEGRADED, "Degraded" },
2102         { IPR_PATH_CFG_FAILED, "Failed" },
2103         { IPR_PATH_CFG_SUSPECT, "Suspect" },
2104         { IPR_PATH_NOT_DETECTED, "Missing" },
2105         { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
2106 };
2107
2108 static const char *link_rate[] = {
2109         "unknown",
2110         "disabled",
2111         "phy reset problem",
2112         "spinup hold",
2113         "port selector",
2114         "unknown",
2115         "unknown",
2116         "unknown",
2117         "1.5Gbps",
2118         "3.0Gbps",
2119         "unknown",
2120         "unknown",
2121         "unknown",
2122         "unknown",
2123         "unknown",
2124         "unknown"
2125 };
2126
2127 /**
2128  * ipr_log_path_elem - Log a fabric path element.
2129  * @hostrcb:    hostrcb struct
2130  * @cfg:                fabric path element struct
2131  *
2132  * Return value:
2133  *      none
2134  **/
2135 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
2136                               struct ipr_hostrcb_config_element *cfg)
2137 {
2138         int i, j;
2139         u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2140         u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2141
2142         if (type == IPR_PATH_CFG_NOT_EXIST)
2143                 return;
2144
2145         for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2146                 if (path_type_desc[i].type != type)
2147                         continue;
2148
2149                 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2150                         if (path_status_desc[j].status != status)
2151                                 continue;
2152
2153                         if (type == IPR_PATH_CFG_IOA_PORT) {
2154                                 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2155                                              path_status_desc[j].desc, path_type_desc[i].desc,
2156                                              cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2157                                              be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2158                         } else {
2159                                 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2160                                         ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2161                                                      path_status_desc[j].desc, path_type_desc[i].desc,
2162                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2163                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2164                                 } else if (cfg->cascaded_expander == 0xff) {
2165                                         ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2166                                                      "WWN=%08X%08X\n", path_status_desc[j].desc,
2167                                                      path_type_desc[i].desc, cfg->phy,
2168                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2169                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2170                                 } else if (cfg->phy == 0xff) {
2171                                         ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2172                                                      "WWN=%08X%08X\n", path_status_desc[j].desc,
2173                                                      path_type_desc[i].desc, cfg->cascaded_expander,
2174                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2175                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2176                                 } else {
2177                                         ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2178                                                      "WWN=%08X%08X\n", path_status_desc[j].desc,
2179                                                      path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2180                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2181                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2182                                 }
2183                         }
2184                         return;
2185                 }
2186         }
2187
2188         ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2189                      "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2190                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2191                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2192 }
2193
2194 /**
2195  * ipr_log64_path_elem - Log a fabric path element.
2196  * @hostrcb:    hostrcb struct
2197  * @cfg:                fabric path element struct
2198  *
2199  * Return value:
2200  *      none
2201  **/
2202 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2203                                 struct ipr_hostrcb64_config_element *cfg)
2204 {
2205         int i, j;
2206         u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2207         u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2208         u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2209         char buffer[IPR_MAX_RES_PATH_LENGTH];
2210
2211         if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2212                 return;
2213
2214         for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2215                 if (path_type_desc[i].type != type)
2216                         continue;
2217
2218                 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2219                         if (path_status_desc[j].status != status)
2220                                 continue;
2221
2222                         ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2223                                      path_status_desc[j].desc, path_type_desc[i].desc,
2224                                      ipr_format_res_path(hostrcb->ioa_cfg,
2225                                         cfg->res_path, buffer, sizeof(buffer)),
2226                                         link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2227                                         be32_to_cpu(cfg->wwid[0]),
2228                                         be32_to_cpu(cfg->wwid[1]));
2229                         return;
2230                 }
2231         }
2232         ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2233                      "WWN=%08X%08X\n", cfg->type_status,
2234                      ipr_format_res_path(hostrcb->ioa_cfg,
2235                         cfg->res_path, buffer, sizeof(buffer)),
2236                         link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2237                         be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2238 }
2239
2240 /**
2241  * ipr_log_fabric_error - Log a fabric error.
2242  * @ioa_cfg:    ioa config struct
2243  * @hostrcb:    hostrcb struct
2244  *
2245  * Return value:
2246  *      none
2247  **/
2248 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2249                                  struct ipr_hostrcb *hostrcb)
2250 {
2251         struct ipr_hostrcb_type_20_error *error;
2252         struct ipr_hostrcb_fabric_desc *fabric;
2253         struct ipr_hostrcb_config_element *cfg;
2254         int i, add_len;
2255
2256         error = &hostrcb->hcam.u.error.u.type_20_error;
2257         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2258         ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2259
2260         add_len = be32_to_cpu(hostrcb->hcam.length) -
2261                 (offsetof(struct ipr_hostrcb_error, u) +
2262                  offsetof(struct ipr_hostrcb_type_20_error, desc));
2263
2264         for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2265                 ipr_log_fabric_path(hostrcb, fabric);
2266                 for_each_fabric_cfg(fabric, cfg)
2267                         ipr_log_path_elem(hostrcb, cfg);
2268
2269                 add_len -= be16_to_cpu(fabric->length);
2270                 fabric = (struct ipr_hostrcb_fabric_desc *)
2271                         ((unsigned long)fabric + be16_to_cpu(fabric->length));
2272         }
2273
2274         ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2275 }
2276
2277 /**
2278  * ipr_log_sis64_array_error - Log a sis64 array error.
2279  * @ioa_cfg:    ioa config struct
2280  * @hostrcb:    hostrcb struct
2281  *
2282  * Return value:
2283  *      none
2284  **/
2285 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2286                                       struct ipr_hostrcb *hostrcb)
2287 {
2288         int i, num_entries;
2289         struct ipr_hostrcb_type_24_error *error;
2290         struct ipr_hostrcb64_array_data_entry *array_entry;
2291         char buffer[IPR_MAX_RES_PATH_LENGTH];
2292         const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2293
2294         error = &hostrcb->hcam.u.error64.u.type_24_error;
2295
2296         ipr_err_separator;
2297
2298         ipr_err("RAID %s Array Configuration: %s\n",
2299                 error->protection_level,
2300                 ipr_format_res_path(ioa_cfg, error->last_res_path,
2301                         buffer, sizeof(buffer)));
2302
2303         ipr_err_separator;
2304
2305         array_entry = error->array_member;
2306         num_entries = min_t(u32, error->num_entries,
2307                             ARRAY_SIZE(error->array_member));
2308
2309         for (i = 0; i < num_entries; i++, array_entry++) {
2310
2311                 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2312                         continue;
2313
2314                 if (error->exposed_mode_adn == i)
2315                         ipr_err("Exposed Array Member %d:\n", i);
2316                 else
2317                         ipr_err("Array Member %d:\n", i);
2318
2319                 ipr_err("Array Member %d:\n", i);
2320                 ipr_log_ext_vpd(&array_entry->vpd);
2321                 ipr_err("Current Location: %s\n",
2322                          ipr_format_res_path(ioa_cfg, array_entry->res_path,
2323                                 buffer, sizeof(buffer)));
2324                 ipr_err("Expected Location: %s\n",
2325                          ipr_format_res_path(ioa_cfg,
2326                                 array_entry->expected_res_path,
2327                                 buffer, sizeof(buffer)));
2328
2329                 ipr_err_separator;
2330         }
2331 }
2332
2333 /**
2334  * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2335  * @ioa_cfg:    ioa config struct
2336  * @hostrcb:    hostrcb struct
2337  *
2338  * Return value:
2339  *      none
2340  **/
2341 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2342                                        struct ipr_hostrcb *hostrcb)
2343 {
2344         struct ipr_hostrcb_type_30_error *error;
2345         struct ipr_hostrcb64_fabric_desc *fabric;
2346         struct ipr_hostrcb64_config_element *cfg;
2347         int i, add_len;
2348
2349         error = &hostrcb->hcam.u.error64.u.type_30_error;
2350
2351         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2352         ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2353
2354         add_len = be32_to_cpu(hostrcb->hcam.length) -
2355                 (offsetof(struct ipr_hostrcb64_error, u) +
2356                  offsetof(struct ipr_hostrcb_type_30_error, desc));
2357
2358         for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2359                 ipr_log64_fabric_path(hostrcb, fabric);
2360                 for_each_fabric_cfg(fabric, cfg)
2361                         ipr_log64_path_elem(hostrcb, cfg);
2362
2363                 add_len -= be16_to_cpu(fabric->length);
2364                 fabric = (struct ipr_hostrcb64_fabric_desc *)
2365                         ((unsigned long)fabric + be16_to_cpu(fabric->length));
2366         }
2367
2368         ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2369 }
2370
2371 /**
2372  * ipr_log_generic_error - Log an adapter error.
2373  * @ioa_cfg:    ioa config struct
2374  * @hostrcb:    hostrcb struct
2375  *
2376  * Return value:
2377  *      none
2378  **/
2379 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2380                                   struct ipr_hostrcb *hostrcb)
2381 {
2382         ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2383                          be32_to_cpu(hostrcb->hcam.length));
2384 }
2385
2386 /**
2387  * ipr_log_sis64_device_error - Log a cache error.
2388  * @ioa_cfg:    ioa config struct
2389  * @hostrcb:    hostrcb struct
2390  *
2391  * Return value:
2392  *      none
2393  **/
2394 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg,
2395                                          struct ipr_hostrcb *hostrcb)
2396 {
2397         struct ipr_hostrcb_type_21_error *error;
2398         char buffer[IPR_MAX_RES_PATH_LENGTH];
2399
2400         error = &hostrcb->hcam.u.error64.u.type_21_error;
2401
2402         ipr_err("-----Failing Device Information-----\n");
2403         ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n",
2404                 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]),
2405                  be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3]));
2406         ipr_err("Device Resource Path: %s\n",
2407                 __ipr_format_res_path(error->res_path,
2408                                       buffer, sizeof(buffer)));
2409         error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0';
2410         error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0';
2411         ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc);
2412         ipr_err("Secondary Problem Description:  %s\n", error->second_problem_desc);
2413         ipr_err("SCSI Sense Data:\n");
2414         ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data));
2415         ipr_err("SCSI Command Descriptor Block: \n");
2416         ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb));
2417
2418         ipr_err("Additional IOA Data:\n");
2419         ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error));
2420 }
2421
2422 /**
2423  * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2424  * @ioasc:      IOASC
2425  *
2426  * This function will return the index of into the ipr_error_table
2427  * for the specified IOASC. If the IOASC is not in the table,
2428  * 0 will be returned, which points to the entry used for unknown errors.
2429  *
2430  * Return value:
2431  *      index into the ipr_error_table
2432  **/
2433 static u32 ipr_get_error(u32 ioasc)
2434 {
2435         int i;
2436
2437         for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2438                 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2439                         return i;
2440
2441         return 0;
2442 }
2443
2444 /**
2445  * ipr_handle_log_data - Log an adapter error.
2446  * @ioa_cfg:    ioa config struct
2447  * @hostrcb:    hostrcb struct
2448  *
2449  * This function logs an adapter error to the system.
2450  *
2451  * Return value:
2452  *      none
2453  **/
2454 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2455                                 struct ipr_hostrcb *hostrcb)
2456 {
2457         u32 ioasc;
2458         int error_index;
2459         struct ipr_hostrcb_type_21_error *error;
2460
2461         if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2462                 return;
2463
2464         if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2465                 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2466
2467         if (ioa_cfg->sis64)
2468                 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2469         else
2470                 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2471
2472         if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2473             ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2474                 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2475                 scsi_report_bus_reset(ioa_cfg->host,
2476                                       hostrcb->hcam.u.error.fd_res_addr.bus);
2477         }
2478
2479         error_index = ipr_get_error(ioasc);
2480
2481         if (!ipr_error_table[error_index].log_hcam)
2482                 return;
2483
2484         if (ioasc == IPR_IOASC_HW_CMD_FAILED &&
2485             hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) {
2486                 error = &hostrcb->hcam.u.error64.u.type_21_error;
2487
2488                 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST &&
2489                         ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
2490                                 return;
2491         }
2492
2493         ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2494
2495         /* Set indication we have logged an error */
2496         ioa_cfg->errors_logged++;
2497
2498         if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2499                 return;
2500         if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2501                 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2502
2503         switch (hostrcb->hcam.overlay_id) {
2504         case IPR_HOST_RCB_OVERLAY_ID_2:
2505                 ipr_log_cache_error(ioa_cfg, hostrcb);
2506                 break;
2507         case IPR_HOST_RCB_OVERLAY_ID_3:
2508                 ipr_log_config_error(ioa_cfg, hostrcb);
2509                 break;
2510         case IPR_HOST_RCB_OVERLAY_ID_4:
2511         case IPR_HOST_RCB_OVERLAY_ID_6:
2512                 ipr_log_array_error(ioa_cfg, hostrcb);
2513                 break;
2514         case IPR_HOST_RCB_OVERLAY_ID_7:
2515                 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2516                 break;
2517         case IPR_HOST_RCB_OVERLAY_ID_12:
2518                 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2519                 break;
2520         case IPR_HOST_RCB_OVERLAY_ID_13:
2521                 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2522                 break;
2523         case IPR_HOST_RCB_OVERLAY_ID_14:
2524         case IPR_HOST_RCB_OVERLAY_ID_16:
2525                 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2526                 break;
2527         case IPR_HOST_RCB_OVERLAY_ID_17:
2528                 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2529                 break;
2530         case IPR_HOST_RCB_OVERLAY_ID_20:
2531                 ipr_log_fabric_error(ioa_cfg, hostrcb);
2532                 break;
2533         case IPR_HOST_RCB_OVERLAY_ID_21:
2534                 ipr_log_sis64_device_error(ioa_cfg, hostrcb);
2535                 break;
2536         case IPR_HOST_RCB_OVERLAY_ID_23:
2537                 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2538                 break;
2539         case IPR_HOST_RCB_OVERLAY_ID_24:
2540         case IPR_HOST_RCB_OVERLAY_ID_26:
2541                 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2542                 break;
2543         case IPR_HOST_RCB_OVERLAY_ID_30:
2544                 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2545                 break;
2546         case IPR_HOST_RCB_OVERLAY_ID_1:
2547         case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2548         default:
2549                 ipr_log_generic_error(ioa_cfg, hostrcb);
2550                 break;
2551         }
2552 }
2553
2554 /**
2555  * ipr_process_error - Op done function for an adapter error log.
2556  * @ipr_cmd:    ipr command struct
2557  *
2558  * This function is the op done function for an error log host
2559  * controlled async from the adapter. It will log the error and
2560  * send the HCAM back to the adapter.
2561  *
2562  * Return value:
2563  *      none
2564  **/
2565 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2566 {
2567         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2568         struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2569         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2570         u32 fd_ioasc;
2571
2572         if (ioa_cfg->sis64)
2573                 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2574         else
2575                 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2576
2577         list_del(&hostrcb->queue);
2578         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
2579
2580         if (!ioasc) {
2581                 ipr_handle_log_data(ioa_cfg, hostrcb);
2582                 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2583                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2584         } else if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
2585                    ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) {
2586                 dev_err(&ioa_cfg->pdev->dev,
2587                         "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2588         }
2589
2590         ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2591 }
2592
2593 /**
2594  * ipr_timeout -  An internally generated op has timed out.
2595  * @ipr_cmd:    ipr command struct
2596  *
2597  * This function blocks host requests and initiates an
2598  * adapter reset.
2599  *
2600  * Return value:
2601  *      none
2602  **/
2603 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2604 {
2605         unsigned long lock_flags = 0;
2606         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2607
2608         ENTER;
2609         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2610
2611         ioa_cfg->errors_logged++;
2612         dev_err(&ioa_cfg->pdev->dev,
2613                 "Adapter being reset due to command timeout.\n");
2614
2615         if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2616                 ioa_cfg->sdt_state = GET_DUMP;
2617
2618         if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2619                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2620
2621         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2622         LEAVE;
2623 }
2624
2625 /**
2626  * ipr_oper_timeout -  Adapter timed out transitioning to operational
2627  * @ipr_cmd:    ipr command struct
2628  *
2629  * This function blocks host requests and initiates an
2630  * adapter reset.
2631  *
2632  * Return value:
2633  *      none
2634  **/
2635 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2636 {
2637         unsigned long lock_flags = 0;
2638         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2639
2640         ENTER;
2641         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2642
2643         ioa_cfg->errors_logged++;
2644         dev_err(&ioa_cfg->pdev->dev,
2645                 "Adapter timed out transitioning to operational.\n");
2646
2647         if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2648                 ioa_cfg->sdt_state = GET_DUMP;
2649
2650         if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2651                 if (ipr_fastfail)
2652                         ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2653                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2654         }
2655
2656         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2657         LEAVE;
2658 }
2659
2660 /**
2661  * ipr_find_ses_entry - Find matching SES in SES table
2662  * @res:        resource entry struct of SES
2663  *
2664  * Return value:
2665  *      pointer to SES table entry / NULL on failure
2666  **/
2667 static const struct ipr_ses_table_entry *
2668 ipr_find_ses_entry(struct ipr_resource_entry *res)
2669 {
2670         int i, j, matches;
2671         struct ipr_std_inq_vpids *vpids;
2672         const struct ipr_ses_table_entry *ste = ipr_ses_table;
2673
2674         for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2675                 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2676                         if (ste->compare_product_id_byte[j] == 'X') {
2677                                 vpids = &res->std_inq_data.vpids;
2678                                 if (vpids->product_id[j] == ste->product_id[j])
2679                                         matches++;
2680                                 else
2681                                         break;
2682                         } else
2683                                 matches++;
2684                 }
2685
2686                 if (matches == IPR_PROD_ID_LEN)
2687                         return ste;
2688         }
2689
2690         return NULL;
2691 }
2692
2693 /**
2694  * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2695  * @ioa_cfg:    ioa config struct
2696  * @bus:                SCSI bus
2697  * @bus_width:  bus width
2698  *
2699  * Return value:
2700  *      SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2701  *      For a 2-byte wide SCSI bus, the maximum transfer speed is
2702  *      twice the maximum transfer rate (e.g. for a wide enabled bus,
2703  *      max 160MHz = max 320MB/sec).
2704  **/
2705 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2706 {
2707         struct ipr_resource_entry *res;
2708         const struct ipr_ses_table_entry *ste;
2709         u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2710
2711         /* Loop through each config table entry in the config table buffer */
2712         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2713                 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2714                         continue;
2715
2716                 if (bus != res->bus)
2717                         continue;
2718
2719                 if (!(ste = ipr_find_ses_entry(res)))
2720                         continue;
2721
2722                 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2723         }
2724
2725         return max_xfer_rate;
2726 }
2727
2728 /**
2729  * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2730  * @ioa_cfg:            ioa config struct
2731  * @max_delay:          max delay in micro-seconds to wait
2732  *
2733  * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2734  *
2735  * Return value:
2736  *      0 on success / other on failure
2737  **/
2738 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2739 {
2740         volatile u32 pcii_reg;
2741         int delay = 1;
2742
2743         /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2744         while (delay < max_delay) {
2745                 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2746
2747                 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2748                         return 0;
2749
2750                 /* udelay cannot be used if delay is more than a few milliseconds */
2751                 if ((delay / 1000) > MAX_UDELAY_MS)
2752                         mdelay(delay / 1000);
2753                 else
2754                         udelay(delay);
2755
2756                 delay += delay;
2757         }
2758         return -EIO;
2759 }
2760
2761 /**
2762  * ipr_get_sis64_dump_data_section - Dump IOA memory
2763  * @ioa_cfg:                    ioa config struct
2764  * @start_addr:                 adapter address to dump
2765  * @dest:                       destination kernel buffer
2766  * @length_in_words:            length to dump in 4 byte words
2767  *
2768  * Return value:
2769  *      0 on success
2770  **/
2771 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2772                                            u32 start_addr,
2773                                            __be32 *dest, u32 length_in_words)
2774 {
2775         int i;
2776
2777         for (i = 0; i < length_in_words; i++) {
2778                 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2779                 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2780                 dest++;
2781         }
2782
2783         return 0;
2784 }
2785
2786 /**
2787  * ipr_get_ldump_data_section - Dump IOA memory
2788  * @ioa_cfg:                    ioa config struct
2789  * @start_addr:                 adapter address to dump
2790  * @dest:                               destination kernel buffer
2791  * @length_in_words:    length to dump in 4 byte words
2792  *
2793  * Return value:
2794  *      0 on success / -EIO on failure
2795  **/
2796 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2797                                       u32 start_addr,
2798                                       __be32 *dest, u32 length_in_words)
2799 {
2800         volatile u32 temp_pcii_reg;
2801         int i, delay = 0;
2802
2803         if (ioa_cfg->sis64)
2804                 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2805                                                        dest, length_in_words);
2806
2807         /* Write IOA interrupt reg starting LDUMP state  */
2808         writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2809                ioa_cfg->regs.set_uproc_interrupt_reg32);
2810
2811         /* Wait for IO debug acknowledge */
2812         if (ipr_wait_iodbg_ack(ioa_cfg,
2813                                IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2814                 dev_err(&ioa_cfg->pdev->dev,
2815                         "IOA dump long data transfer timeout\n");
2816                 return -EIO;
2817         }
2818
2819         /* Signal LDUMP interlocked - clear IO debug ack */
2820         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2821                ioa_cfg->regs.clr_interrupt_reg);
2822
2823         /* Write Mailbox with starting address */
2824         writel(start_addr, ioa_cfg->ioa_mailbox);
2825
2826         /* Signal address valid - clear IOA Reset alert */
2827         writel(IPR_UPROCI_RESET_ALERT,
2828                ioa_cfg->regs.clr_uproc_interrupt_reg32);
2829
2830         for (i = 0; i < length_in_words; i++) {
2831                 /* Wait for IO debug acknowledge */
2832                 if (ipr_wait_iodbg_ack(ioa_cfg,
2833                                        IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2834                         dev_err(&ioa_cfg->pdev->dev,
2835                                 "IOA dump short data transfer timeout\n");
2836                         return -EIO;
2837                 }
2838
2839                 /* Read data from mailbox and increment destination pointer */
2840                 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2841                 dest++;
2842
2843                 /* For all but the last word of data, signal data received */
2844                 if (i < (length_in_words - 1)) {
2845                         /* Signal dump data received - Clear IO debug Ack */
2846                         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2847                                ioa_cfg->regs.clr_interrupt_reg);
2848                 }
2849         }
2850
2851         /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2852         writel(IPR_UPROCI_RESET_ALERT,
2853                ioa_cfg->regs.set_uproc_interrupt_reg32);
2854
2855         writel(IPR_UPROCI_IO_DEBUG_ALERT,
2856                ioa_cfg->regs.clr_uproc_interrupt_reg32);
2857
2858         /* Signal dump data received - Clear IO debug Ack */
2859         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2860                ioa_cfg->regs.clr_interrupt_reg);
2861
2862         /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2863         while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2864                 temp_pcii_reg =
2865                     readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2866
2867                 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2868                         return 0;
2869
2870                 udelay(10);
2871                 delay += 10;
2872         }
2873
2874         return 0;
2875 }
2876
2877 #ifdef CONFIG_SCSI_IPR_DUMP
2878 /**
2879  * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2880  * @ioa_cfg:            ioa config struct
2881  * @pci_address:        adapter address
2882  * @length:                     length of data to copy
2883  *
2884  * Copy data from PCI adapter to kernel buffer.
2885  * Note: length MUST be a 4 byte multiple
2886  * Return value:
2887  *      0 on success / other on failure
2888  **/
2889 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2890                         unsigned long pci_address, u32 length)
2891 {
2892         int bytes_copied = 0;
2893         int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2894         __be32 *page;
2895         unsigned long lock_flags = 0;
2896         struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2897
2898         if (ioa_cfg->sis64)
2899                 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2900         else
2901                 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2902
2903         while (bytes_copied < length &&
2904                (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2905                 if (ioa_dump->page_offset >= PAGE_SIZE ||
2906                     ioa_dump->page_offset == 0) {
2907                         page = (__be32 *)__get_free_page(GFP_ATOMIC);
2908
2909                         if (!page) {
2910                                 ipr_trace;
2911                                 return bytes_copied;
2912                         }
2913
2914                         ioa_dump->page_offset = 0;
2915                         ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2916                         ioa_dump->next_page_index++;
2917                 } else
2918                         page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2919
2920                 rem_len = length - bytes_copied;
2921                 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2922                 cur_len = min(rem_len, rem_page_len);
2923
2924                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2925                 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2926                         rc = -EIO;
2927                 } else {
2928                         rc = ipr_get_ldump_data_section(ioa_cfg,
2929                                                         pci_address + bytes_copied,
2930                                                         &page[ioa_dump->page_offset / 4],
2931                                                         (cur_len / sizeof(u32)));
2932                 }
2933                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2934
2935                 if (!rc) {
2936                         ioa_dump->page_offset += cur_len;
2937                         bytes_copied += cur_len;
2938                 } else {
2939                         ipr_trace;
2940                         break;
2941                 }
2942                 schedule();
2943         }
2944
2945         return bytes_copied;
2946 }
2947
2948 /**
2949  * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2950  * @hdr:        dump entry header struct
2951  *
2952  * Return value:
2953  *      nothing
2954  **/
2955 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2956 {
2957         hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2958         hdr->num_elems = 1;
2959         hdr->offset = sizeof(*hdr);
2960         hdr->status = IPR_DUMP_STATUS_SUCCESS;
2961 }
2962
2963 /**
2964  * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2965  * @ioa_cfg:    ioa config struct
2966  * @driver_dump:        driver dump struct
2967  *
2968  * Return value:
2969  *      nothing
2970  **/
2971 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2972                                    struct ipr_driver_dump *driver_dump)
2973 {
2974         struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2975
2976         ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2977         driver_dump->ioa_type_entry.hdr.len =
2978                 sizeof(struct ipr_dump_ioa_type_entry) -
2979                 sizeof(struct ipr_dump_entry_header);
2980         driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2981         driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2982         driver_dump->ioa_type_entry.type = ioa_cfg->type;
2983         driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2984                 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2985                 ucode_vpd->minor_release[1];
2986         driver_dump->hdr.num_entries++;
2987 }
2988
2989 /**
2990  * ipr_dump_version_data - Fill in the driver version in the dump.
2991  * @ioa_cfg:    ioa config struct
2992  * @driver_dump:        driver dump struct
2993  *
2994  * Return value:
2995  *      nothing
2996  **/
2997 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2998                                   struct ipr_driver_dump *driver_dump)
2999 {
3000         ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
3001         driver_dump->version_entry.hdr.len =
3002                 sizeof(struct ipr_dump_version_entry) -
3003                 sizeof(struct ipr_dump_entry_header);
3004         driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3005         driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
3006         strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
3007         driver_dump->hdr.num_entries++;
3008 }
3009
3010 /**
3011  * ipr_dump_trace_data - Fill in the IOA trace in the dump.
3012  * @ioa_cfg:    ioa config struct
3013  * @driver_dump:        driver dump struct
3014  *
3015  * Return value:
3016  *      nothing
3017  **/
3018 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
3019                                    struct ipr_driver_dump *driver_dump)
3020 {
3021         ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
3022         driver_dump->trace_entry.hdr.len =
3023                 sizeof(struct ipr_dump_trace_entry) -
3024                 sizeof(struct ipr_dump_entry_header);
3025         driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3026         driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
3027         memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
3028         driver_dump->hdr.num_entries++;
3029 }
3030
3031 /**
3032  * ipr_dump_location_data - Fill in the IOA location in the dump.
3033  * @ioa_cfg:    ioa config struct
3034  * @driver_dump:        driver dump struct
3035  *
3036  * Return value:
3037  *      nothing
3038  **/
3039 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
3040                                    struct ipr_driver_dump *driver_dump)
3041 {
3042         ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
3043         driver_dump->location_entry.hdr.len =
3044                 sizeof(struct ipr_dump_location_entry) -
3045                 sizeof(struct ipr_dump_entry_header);
3046         driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3047         driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
3048         strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
3049         driver_dump->hdr.num_entries++;
3050 }
3051
3052 /**
3053  * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
3054  * @ioa_cfg:    ioa config struct
3055  * @dump:               dump struct
3056  *
3057  * Return value:
3058  *      nothing
3059  **/
3060 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
3061 {
3062         unsigned long start_addr, sdt_word;
3063         unsigned long lock_flags = 0;
3064         struct ipr_driver_dump *driver_dump = &dump->driver_dump;
3065         struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
3066         u32 num_entries, max_num_entries, start_off, end_off;
3067         u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
3068         struct ipr_sdt *sdt;
3069         int valid = 1;
3070         int i;
3071
3072         ENTER;
3073
3074         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3075
3076         if (ioa_cfg->sdt_state != READ_DUMP) {
3077                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3078                 return;
3079         }
3080
3081         if (ioa_cfg->sis64) {
3082                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3083                 ssleep(IPR_DUMP_DELAY_SECONDS);
3084                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3085         }
3086
3087         start_addr = readl(ioa_cfg->ioa_mailbox);
3088
3089         if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
3090                 dev_err(&ioa_cfg->pdev->dev,
3091                         "Invalid dump table format: %lx\n", start_addr);
3092                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3093                 return;
3094         }
3095
3096         dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
3097
3098         driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
3099
3100         /* Initialize the overall dump header */
3101         driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
3102         driver_dump->hdr.num_entries = 1;
3103         driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
3104         driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3105         driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3106         driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3107
3108         ipr_dump_version_data(ioa_cfg, driver_dump);
3109         ipr_dump_location_data(ioa_cfg, driver_dump);
3110         ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3111         ipr_dump_trace_data(ioa_cfg, driver_dump);
3112
3113         /* Update dump_header */
3114         driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3115
3116         /* IOA Dump entry */
3117         ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3118         ioa_dump->hdr.len = 0;
3119         ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3120         ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3121
3122         /* First entries in sdt are actually a list of dump addresses and
3123          lengths to gather the real dump data.  sdt represents the pointer
3124          to the ioa generated dump table.  Dump data will be extracted based
3125          on entries in this table */
3126         sdt = &ioa_dump->sdt;
3127
3128         if (ioa_cfg->sis64) {
3129                 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3130                 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3131         } else {
3132                 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3133                 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3134         }
3135
3136         bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3137                         (max_num_entries * sizeof(struct ipr_sdt_entry));
3138         rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3139                                         bytes_to_copy / sizeof(__be32));
3140
3141         /* Smart Dump table is ready to use and the first entry is valid */
3142         if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3143             (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3144                 dev_err(&ioa_cfg->pdev->dev,
3145                         "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3146                         rc, be32_to_cpu(sdt->hdr.state));
3147                 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3148                 ioa_cfg->sdt_state = DUMP_OBTAINED;
3149                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3150                 return;
3151         }
3152
3153         num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3154
3155         if (num_entries > max_num_entries)
3156                 num_entries = max_num_entries;
3157
3158         /* Update dump length to the actual data to be copied */
3159         dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3160         if (ioa_cfg->sis64)
3161                 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3162         else
3163                 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3164
3165         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3166
3167         for (i = 0; i < num_entries; i++) {
3168                 if (ioa_dump->hdr.len > max_dump_size) {
3169                         driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3170                         break;
3171                 }
3172
3173                 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3174                         sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3175                         if (ioa_cfg->sis64)
3176                                 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3177                         else {
3178                                 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3179                                 end_off = be32_to_cpu(sdt->entry[i].end_token);
3180
3181                                 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3182                                         bytes_to_copy = end_off - start_off;
3183                                 else
3184                                         valid = 0;
3185                         }
3186                         if (valid) {
3187                                 if (bytes_to_copy > max_dump_size) {
3188                                         sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3189                                         continue;
3190                                 }
3191
3192                                 /* Copy data from adapter to driver buffers */
3193                                 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3194                                                             bytes_to_copy);
3195
3196                                 ioa_dump->hdr.len += bytes_copied;
3197
3198                                 if (bytes_copied != bytes_to_copy) {
3199                                         driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3200                                         break;
3201                                 }
3202                         }
3203                 }
3204         }
3205
3206         dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3207
3208         /* Update dump_header */
3209         driver_dump->hdr.len += ioa_dump->hdr.len;
3210         wmb();
3211         ioa_cfg->sdt_state = DUMP_OBTAINED;
3212         LEAVE;
3213 }
3214
3215 #else
3216 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3217 #endif
3218
3219 /**
3220  * ipr_release_dump - Free adapter dump memory
3221  * @kref:       kref struct
3222  *
3223  * Return value:
3224  *      nothing
3225  **/
3226 static void ipr_release_dump(struct kref *kref)
3227 {
3228         struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3229         struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3230         unsigned long lock_flags = 0;
3231         int i;
3232
3233         ENTER;
3234         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3235         ioa_cfg->dump = NULL;
3236         ioa_cfg->sdt_state = INACTIVE;
3237         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3238
3239         for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3240                 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3241
3242         vfree(dump->ioa_dump.ioa_data);
3243         kfree(dump);
3244         LEAVE;
3245 }
3246
3247 /**
3248  * ipr_worker_thread - Worker thread
3249  * @work:               ioa config struct
3250  *
3251  * Called at task level from a work thread. This function takes care
3252  * of adding and removing device from the mid-layer as configuration
3253  * changes are detected by the adapter.
3254  *
3255  * Return value:
3256  *      nothing
3257  **/
3258 static void ipr_worker_thread(struct work_struct *work)
3259 {
3260         unsigned long lock_flags;
3261         struct ipr_resource_entry *res;
3262         struct scsi_device *sdev;
3263         struct ipr_dump *dump;
3264         struct ipr_ioa_cfg *ioa_cfg =
3265                 container_of(work, struct ipr_ioa_cfg, work_q);
3266         u8 bus, target, lun;
3267         int did_work;
3268
3269         ENTER;
3270         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3271
3272         if (ioa_cfg->sdt_state == READ_DUMP) {
3273                 dump = ioa_cfg->dump;
3274                 if (!dump) {
3275                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3276                         return;
3277                 }
3278                 kref_get(&dump->kref);
3279                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3280                 ipr_get_ioa_dump(ioa_cfg, dump);
3281                 kref_put(&dump->kref, ipr_release_dump);
3282
3283                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3284                 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3285                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3286                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3287                 return;
3288         }
3289
3290 restart:
3291         do {
3292                 did_work = 0;
3293                 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
3294                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3295                         return;
3296                 }
3297
3298                 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3299                         if (res->del_from_ml && res->sdev) {
3300                                 did_work = 1;
3301                                 sdev = res->sdev;
3302                                 if (!scsi_device_get(sdev)) {
3303                                         if (!res->add_to_ml)
3304                                                 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3305                                         else
3306                                                 res->del_from_ml = 0;
3307                                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3308                                         scsi_remove_device(sdev);
3309                                         scsi_device_put(sdev);
3310                                         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3311                                 }
3312                                 break;
3313                         }
3314                 }
3315         } while (did_work);
3316
3317         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3318                 if (res->add_to_ml) {
3319                         bus = res->bus;
3320                         target = res->target;
3321                         lun = res->lun;
3322                         res->add_to_ml = 0;
3323                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3324                         scsi_add_device(ioa_cfg->host, bus, target, lun);
3325                         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3326                         goto restart;
3327                 }
3328         }
3329
3330         ioa_cfg->scan_done = 1;
3331         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3332         kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3333         LEAVE;
3334 }
3335
3336 #ifdef CONFIG_SCSI_IPR_TRACE
3337 /**
3338  * ipr_read_trace - Dump the adapter trace
3339  * @filp:               open sysfs file
3340  * @kobj:               kobject struct
3341  * @bin_attr:           bin_attribute struct
3342  * @buf:                buffer
3343  * @off:                offset
3344  * @count:              buffer size
3345  *
3346  * Return value:
3347  *      number of bytes printed to buffer
3348  **/
3349 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3350                               struct bin_attribute *bin_attr,
3351                               char *buf, loff_t off, size_t count)
3352 {
3353         struct device *dev = container_of(kobj, struct device, kobj);
3354         struct Scsi_Host *shost = class_to_shost(dev);
3355         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3356         unsigned long lock_flags = 0;
3357         ssize_t ret;
3358
3359         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3360         ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3361                                 IPR_TRACE_SIZE);
3362         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3363
3364         return ret;
3365 }
3366
3367 static struct bin_attribute ipr_trace_attr = {
3368         .attr = {
3369                 .name = "trace",
3370                 .mode = S_IRUGO,
3371         },
3372         .size = 0,
3373         .read = ipr_read_trace,
3374 };
3375 #endif
3376
3377 /**
3378  * ipr_show_fw_version - Show the firmware version
3379  * @dev:        class device struct
3380  * @buf:        buffer
3381  *
3382  * Return value:
3383  *      number of bytes printed to buffer
3384  **/
3385 static ssize_t ipr_show_fw_version(struct device *dev,
3386                                    struct device_attribute *attr, char *buf)
3387 {
3388         struct Scsi_Host *shost = class_to_shost(dev);
3389         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3390         struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3391         unsigned long lock_flags = 0;
3392         int len;
3393
3394         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3395         len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3396                        ucode_vpd->major_release, ucode_vpd->card_type,
3397                        ucode_vpd->minor_release[0],
3398                        ucode_vpd->minor_release[1]);
3399         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3400         return len;
3401 }
3402
3403 static struct device_attribute ipr_fw_version_attr = {
3404         .attr = {
3405                 .name =         "fw_version",
3406                 .mode =         S_IRUGO,
3407         },
3408         .show = ipr_show_fw_version,
3409 };
3410
3411 /**
3412  * ipr_show_log_level - Show the adapter's error logging level
3413  * @dev:        class device struct
3414  * @buf:        buffer
3415  *
3416  * Return value:
3417  *      number of bytes printed to buffer
3418  **/
3419 static ssize_t ipr_show_log_level(struct device *dev,
3420                                    struct device_attribute *attr, char *buf)
3421 {
3422         struct Scsi_Host *shost = class_to_shost(dev);
3423         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3424         unsigned long lock_flags = 0;
3425         int len;
3426
3427         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3428         len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3429         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3430         return len;
3431 }
3432
3433 /**
3434  * ipr_store_log_level - Change the adapter's error logging level
3435  * @dev:        class device struct
3436  * @buf:        buffer
3437  *
3438  * Return value:
3439  *      number of bytes printed to buffer
3440  **/
3441 static ssize_t ipr_store_log_level(struct device *dev,
3442                                    struct device_attribute *attr,
3443                                    const char *buf, size_t count)
3444 {
3445         struct Scsi_Host *shost = class_to_shost(dev);
3446         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3447         unsigned long lock_flags = 0;
3448
3449         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3450         ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3451         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3452         return strlen(buf);
3453 }
3454
3455 static struct device_attribute ipr_log_level_attr = {
3456         .attr = {
3457                 .name =         "log_level",
3458                 .mode =         S_IRUGO | S_IWUSR,
3459         },
3460         .show = ipr_show_log_level,
3461         .store = ipr_store_log_level
3462 };
3463
3464 /**
3465  * ipr_store_diagnostics - IOA Diagnostics interface
3466  * @dev:        device struct
3467  * @buf:        buffer
3468  * @count:      buffer size
3469  *
3470  * This function will reset the adapter and wait a reasonable
3471  * amount of time for any errors that the adapter might log.
3472  *
3473  * Return value:
3474  *      count on success / other on failure
3475  **/
3476 static ssize_t ipr_store_diagnostics(struct device *dev,
3477                                      struct device_attribute *attr,
3478                                      const char *buf, size_t count)
3479 {
3480         struct Scsi_Host *shost = class_to_shost(dev);
3481         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3482         unsigned long lock_flags = 0;
3483         int rc = count;
3484
3485         if (!capable(CAP_SYS_ADMIN))
3486                 return -EACCES;
3487
3488         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3489         while (ioa_cfg->in_reset_reload) {
3490                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3491                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3492                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3493         }
3494
3495         ioa_cfg->errors_logged = 0;
3496         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3497
3498         if (ioa_cfg->in_reset_reload) {
3499                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3500                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3501
3502                 /* Wait for a second for any errors to be logged */
3503                 msleep(1000);
3504         } else {
3505                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3506                 return -EIO;
3507         }
3508
3509         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3510         if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3511                 rc = -EIO;
3512         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3513
3514         return rc;
3515 }
3516
3517 static struct device_attribute ipr_diagnostics_attr = {
3518         .attr = {
3519                 .name =         "run_diagnostics",
3520                 .mode =         S_IWUSR,
3521         },
3522         .store = ipr_store_diagnostics
3523 };
3524
3525 /**
3526  * ipr_show_adapter_state - Show the adapter's state
3527  * @class_dev:  device struct
3528  * @buf:        buffer
3529  *
3530  * Return value:
3531  *      number of bytes printed to buffer
3532  **/
3533 static ssize_t ipr_show_adapter_state(struct device *dev,
3534                                       struct device_attribute *attr, char *buf)
3535 {
3536         struct Scsi_Host *shost = class_to_shost(dev);
3537         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3538         unsigned long lock_flags = 0;
3539         int len;
3540
3541         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3542         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3543                 len = snprintf(buf, PAGE_SIZE, "offline\n");
3544         else
3545                 len = snprintf(buf, PAGE_SIZE, "online\n");
3546         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3547         return len;
3548 }
3549
3550 /**
3551  * ipr_store_adapter_state - Change adapter state
3552  * @dev:        device struct
3553  * @buf:        buffer
3554  * @count:      buffer size
3555  *
3556  * This function will change the adapter's state.
3557  *
3558  * Return value:
3559  *      count on success / other on failure
3560  **/
3561 static ssize_t ipr_store_adapter_state(struct device *dev,
3562                                        struct device_attribute *attr,
3563                                        const char *buf, size_t count)
3564 {
3565         struct Scsi_Host *shost = class_to_shost(dev);
3566         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3567         unsigned long lock_flags;
3568         int result = count, i;
3569
3570         if (!capable(CAP_SYS_ADMIN))
3571                 return -EACCES;
3572
3573         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3574         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3575             !strncmp(buf, "online", 6)) {
3576                 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3577                         spin_lock(&ioa_cfg->hrrq[i]._lock);
3578                         ioa_cfg->hrrq[i].ioa_is_dead = 0;
3579                         spin_unlock(&ioa_cfg->hrrq[i]._lock);
3580                 }
3581                 wmb();
3582                 ioa_cfg->reset_retries = 0;
3583                 ioa_cfg->in_ioa_bringdown = 0;
3584                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3585         }
3586         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3587         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3588
3589         return result;
3590 }
3591
3592 static struct device_attribute ipr_ioa_state_attr = {
3593         .attr = {
3594                 .name =         "online_state",
3595                 .mode =         S_IRUGO | S_IWUSR,
3596         },
3597         .show = ipr_show_adapter_state,
3598         .store = ipr_store_adapter_state
3599 };
3600
3601 /**
3602  * ipr_store_reset_adapter - Reset the adapter
3603  * @dev:        device struct
3604  * @buf:        buffer
3605  * @count:      buffer size
3606  *
3607  * This function will reset the adapter.
3608  *
3609  * Return value:
3610  *      count on success / other on failure
3611  **/
3612 static ssize_t ipr_store_reset_adapter(struct device *dev,
3613                                        struct device_attribute *attr,
3614                                        const char *buf, size_t count)
3615 {
3616         struct Scsi_Host *shost = class_to_shost(dev);
3617         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3618         unsigned long lock_flags;
3619         int result = count;
3620
3621         if (!capable(CAP_SYS_ADMIN))
3622                 return -EACCES;
3623
3624         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3625         if (!ioa_cfg->in_reset_reload)
3626                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3627         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3628         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3629
3630         return result;
3631 }
3632
3633 static struct device_attribute ipr_ioa_reset_attr = {
3634         .attr = {
3635                 .name =         "reset_host",
3636                 .mode =         S_IWUSR,
3637         },
3638         .store = ipr_store_reset_adapter
3639 };
3640
3641 static int ipr_iopoll(struct blk_iopoll *iop, int budget);
3642  /**
3643  * ipr_show_iopoll_weight - Show ipr polling mode
3644  * @dev:        class device struct
3645  * @buf:        buffer
3646  *
3647  * Return value:
3648  *      number of bytes printed to buffer
3649  **/
3650 static ssize_t ipr_show_iopoll_weight(struct device *dev,
3651                                    struct device_attribute *attr, char *buf)
3652 {
3653         struct Scsi_Host *shost = class_to_shost(dev);
3654         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3655         unsigned long lock_flags = 0;
3656         int len;
3657
3658         spin_lock_irqsave(shost->host_lock, lock_flags);
3659         len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight);
3660         spin_unlock_irqrestore(shost->host_lock, lock_flags);
3661
3662         return len;
3663 }
3664
3665 /**
3666  * ipr_store_iopoll_weight - Change the adapter's polling mode
3667  * @dev:        class device struct
3668  * @buf:        buffer
3669  *
3670  * Return value:
3671  *      number of bytes printed to buffer
3672  **/
3673 static ssize_t ipr_store_iopoll_weight(struct device *dev,
3674                                         struct device_attribute *attr,
3675                                         const char *buf, size_t count)
3676 {
3677         struct Scsi_Host *shost = class_to_shost(dev);
3678         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3679         unsigned long user_iopoll_weight;
3680         unsigned long lock_flags = 0;
3681         int i;
3682
3683         if (!ioa_cfg->sis64) {
3684                 dev_info(&ioa_cfg->pdev->dev, "blk-iopoll not supported on this adapter\n");
3685                 return -EINVAL;
3686         }
3687         if (kstrtoul(buf, 10, &user_iopoll_weight))
3688                 return -EINVAL;
3689
3690         if (user_iopoll_weight > 256) {
3691                 dev_info(&ioa_cfg->pdev->dev, "Invalid blk-iopoll weight. It must be less than 256\n");
3692                 return -EINVAL;
3693         }
3694
3695         if (user_iopoll_weight == ioa_cfg->iopoll_weight) {
3696                 dev_info(&ioa_cfg->pdev->dev, "Current blk-iopoll weight has the same weight\n");
3697                 return strlen(buf);
3698         }
3699
3700         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3701                 for (i = 1; i < ioa_cfg->hrrq_num; i++)
3702                         blk_iopoll_disable(&ioa_cfg->hrrq[i].iopoll);
3703         }
3704
3705         spin_lock_irqsave(shost->host_lock, lock_flags);
3706         ioa_cfg->iopoll_weight = user_iopoll_weight;
3707         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3708                 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
3709                         blk_iopoll_init(&ioa_cfg->hrrq[i].iopoll,
3710                                         ioa_cfg->iopoll_weight, ipr_iopoll);
3711                         blk_iopoll_enable(&ioa_cfg->hrrq[i].iopoll);
3712                 }
3713         }
3714         spin_unlock_irqrestore(shost->host_lock, lock_flags);
3715
3716         return strlen(buf);
3717 }
3718
3719 static struct device_attribute ipr_iopoll_weight_attr = {
3720         .attr = {
3721                 .name =         "iopoll_weight",
3722                 .mode =         S_IRUGO | S_IWUSR,
3723         },
3724         .show = ipr_show_iopoll_weight,
3725         .store = ipr_store_iopoll_weight
3726 };
3727
3728 /**
3729  * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3730  * @buf_len:            buffer length
3731  *
3732  * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3733  * list to use for microcode download
3734  *
3735  * Return value:
3736  *      pointer to sglist / NULL on failure
3737  **/
3738 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3739 {
3740         int sg_size, order, bsize_elem, num_elem, i, j;
3741         struct ipr_sglist *sglist;
3742         struct scatterlist *scatterlist;
3743         struct page *page;
3744
3745         /* Get the minimum size per scatter/gather element */
3746         sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3747
3748         /* Get the actual size per element */
3749         order = get_order(sg_size);
3750
3751         /* Determine the actual number of bytes per element */
3752         bsize_elem = PAGE_SIZE * (1 << order);
3753
3754         /* Determine the actual number of sg entries needed */
3755         if (buf_len % bsize_elem)
3756                 num_elem = (buf_len / bsize_elem) + 1;
3757         else
3758                 num_elem = buf_len / bsize_elem;
3759
3760         /* Allocate a scatter/gather list for the DMA */
3761         sglist = kzalloc(sizeof(struct ipr_sglist) +
3762                          (sizeof(struct scatterlist) * (num_elem - 1)),
3763                          GFP_KERNEL);
3764
3765         if (sglist == NULL) {
3766                 ipr_trace;
3767                 return NULL;
3768         }
3769
3770         scatterlist = sglist->scatterlist;
3771         sg_init_table(scatterlist, num_elem);
3772
3773         sglist->order = order;
3774         sglist->num_sg = num_elem;
3775
3776         /* Allocate a bunch of sg elements */
3777         for (i = 0; i < num_elem; i++) {
3778                 page = alloc_pages(GFP_KERNEL, order);
3779                 if (!page) {
3780                         ipr_trace;
3781
3782                         /* Free up what we already allocated */
3783                         for (j = i - 1; j >= 0; j--)
3784                                 __free_pages(sg_page(&scatterlist[j]), order);
3785                         kfree(sglist);
3786                         return NULL;
3787                 }
3788
3789                 sg_set_page(&scatterlist[i], page, 0, 0);
3790         }
3791
3792         return sglist;
3793 }
3794
3795 /**
3796  * ipr_free_ucode_buffer - Frees a microcode download buffer
3797  * @p_dnld:             scatter/gather list pointer
3798  *
3799  * Free a DMA'able ucode download buffer previously allocated with
3800  * ipr_alloc_ucode_buffer
3801  *
3802  * Return value:
3803  *      nothing
3804  **/
3805 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3806 {
3807         int i;
3808
3809         for (i = 0; i < sglist->num_sg; i++)
3810                 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3811
3812         kfree(sglist);
3813 }
3814
3815 /**
3816  * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3817  * @sglist:             scatter/gather list pointer
3818  * @buffer:             buffer pointer
3819  * @len:                buffer length
3820  *
3821  * Copy a microcode image from a user buffer into a buffer allocated by
3822  * ipr_alloc_ucode_buffer
3823  *
3824  * Return value:
3825  *      0 on success / other on failure
3826  **/
3827 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3828                                  u8 *buffer, u32 len)
3829 {
3830         int bsize_elem, i, result = 0;
3831         struct scatterlist *scatterlist;
3832         void *kaddr;
3833
3834         /* Determine the actual number of bytes per element */
3835         bsize_elem = PAGE_SIZE * (1 << sglist->order);
3836
3837         scatterlist = sglist->scatterlist;
3838
3839         for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3840                 struct page *page = sg_page(&scatterlist[i]);
3841
3842                 kaddr = kmap(page);
3843                 memcpy(kaddr, buffer, bsize_elem);
3844                 kunmap(page);
3845
3846                 scatterlist[i].length = bsize_elem;
3847
3848                 if (result != 0) {
3849                         ipr_trace;
3850                         return result;
3851                 }
3852         }
3853
3854         if (len % bsize_elem) {
3855                 struct page *page = sg_page(&scatterlist[i]);
3856
3857                 kaddr = kmap(page);
3858                 memcpy(kaddr, buffer, len % bsize_elem);
3859                 kunmap(page);
3860
3861                 scatterlist[i].length = len % bsize_elem;
3862         }
3863
3864         sglist->buffer_len = len;
3865         return result;
3866 }
3867
3868 /**
3869  * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3870  * @ipr_cmd:            ipr command struct
3871  * @sglist:             scatter/gather list
3872  *
3873  * Builds a microcode download IOA data list (IOADL).
3874  *
3875  **/
3876 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3877                                     struct ipr_sglist *sglist)
3878 {
3879         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3880         struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3881         struct scatterlist *scatterlist = sglist->scatterlist;
3882         int i;
3883
3884         ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3885         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3886         ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3887
3888         ioarcb->ioadl_len =
3889                 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3890         for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3891                 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3892                 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3893                 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3894         }
3895
3896         ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3897 }
3898
3899 /**
3900  * ipr_build_ucode_ioadl - Build a microcode download IOADL
3901  * @ipr_cmd:    ipr command struct
3902  * @sglist:             scatter/gather list
3903  *
3904  * Builds a microcode download IOA data list (IOADL).
3905  *
3906  **/
3907 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3908                                   struct ipr_sglist *sglist)
3909 {
3910         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3911         struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3912         struct scatterlist *scatterlist = sglist->scatterlist;
3913         int i;
3914
3915         ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3916         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3917         ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3918
3919         ioarcb->ioadl_len =
3920                 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3921
3922         for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3923                 ioadl[i].flags_and_data_len =
3924                         cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3925                 ioadl[i].address =
3926                         cpu_to_be32(sg_dma_address(&scatterlist[i]));
3927         }
3928
3929         ioadl[i-1].flags_and_data_len |=
3930                 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3931 }
3932
3933 /**
3934  * ipr_update_ioa_ucode - Update IOA's microcode
3935  * @ioa_cfg:    ioa config struct
3936  * @sglist:             scatter/gather list
3937  *
3938  * Initiate an adapter reset to update the IOA's microcode
3939  *
3940  * Return value:
3941  *      0 on success / -EIO on failure
3942  **/
3943 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3944                                 struct ipr_sglist *sglist)
3945 {
3946         unsigned long lock_flags;
3947
3948         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3949         while (ioa_cfg->in_reset_reload) {
3950                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3951                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3952                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3953         }
3954
3955         if (ioa_cfg->ucode_sglist) {
3956                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3957                 dev_err(&ioa_cfg->pdev->dev,
3958                         "Microcode download already in progress\n");
3959                 return -EIO;
3960         }
3961
3962         sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev,
3963                                         sglist->scatterlist, sglist->num_sg,
3964                                         DMA_TO_DEVICE);
3965
3966         if (!sglist->num_dma_sg) {
3967                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3968                 dev_err(&ioa_cfg->pdev->dev,
3969                         "Failed to map microcode download buffer!\n");
3970                 return -EIO;
3971         }
3972
3973         ioa_cfg->ucode_sglist = sglist;
3974         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3975         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3976         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3977
3978         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3979         ioa_cfg->ucode_sglist = NULL;
3980         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3981         return 0;
3982 }
3983
3984 /**
3985  * ipr_store_update_fw - Update the firmware on the adapter
3986  * @class_dev:  device struct
3987  * @buf:        buffer
3988  * @count:      buffer size
3989  *
3990  * This function will update the firmware on the adapter.
3991  *
3992  * Return value:
3993  *      count on success / other on failure
3994  **/
3995 static ssize_t ipr_store_update_fw(struct device *dev,
3996                                    struct device_attribute *attr,
3997                                    const char *buf, size_t count)
3998 {
3999         struct Scsi_Host *shost = class_to_shost(dev);
4000         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4001         struct ipr_ucode_image_header *image_hdr;
4002         const struct firmware *fw_entry;
4003         struct ipr_sglist *sglist;
4004         char fname[100];
4005         char *src;
4006         int len, result, dnld_size;
4007
4008         if (!capable(CAP_SYS_ADMIN))
4009                 return -EACCES;
4010
4011         len = snprintf(fname, 99, "%s", buf);
4012         fname[len-1] = '\0';
4013
4014         if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4015                 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4016                 return -EIO;
4017         }
4018
4019         image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4020
4021         src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4022         dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4023         sglist = ipr_alloc_ucode_buffer(dnld_size);
4024
4025         if (!sglist) {
4026                 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4027                 release_firmware(fw_entry);
4028                 return -ENOMEM;
4029         }
4030
4031         result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4032
4033         if (result) {
4034                 dev_err(&ioa_cfg->pdev->dev,
4035                         "Microcode buffer copy to DMA buffer failed\n");
4036                 goto out;
4037         }
4038
4039         ipr_info("Updating microcode, please be patient.  This may take up to 30 minutes.\n");
4040
4041         result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4042
4043         if (!result)
4044                 result = count;
4045 out:
4046         ipr_free_ucode_buffer(sglist);
4047         release_firmware(fw_entry);
4048         return result;
4049 }
4050
4051 static struct device_attribute ipr_update_fw_attr = {
4052         .attr = {
4053                 .name =         "update_fw",
4054                 .mode =         S_IWUSR,
4055         },
4056         .store = ipr_store_update_fw
4057 };
4058
4059 /**
4060  * ipr_show_fw_type - Show the adapter's firmware type.
4061  * @dev:        class device struct
4062  * @buf:        buffer
4063  *
4064  * Return value:
4065  *      number of bytes printed to buffer
4066  **/
4067 static ssize_t ipr_show_fw_type(struct device *dev,
4068                                 struct device_attribute *attr, char *buf)
4069 {
4070         struct Scsi_Host *shost = class_to_shost(dev);
4071         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4072         unsigned long lock_flags = 0;
4073         int len;
4074
4075         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4076         len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4077         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4078         return len;
4079 }
4080
4081 static struct device_attribute ipr_ioa_fw_type_attr = {
4082         .attr = {
4083                 .name =         "fw_type",
4084                 .mode =         S_IRUGO,
4085         },
4086         .show = ipr_show_fw_type
4087 };
4088
4089 static struct device_attribute *ipr_ioa_attrs[] = {
4090         &ipr_fw_version_attr,
4091         &ipr_log_level_attr,
4092         &ipr_diagnostics_attr,
4093         &ipr_ioa_state_attr,
4094         &ipr_ioa_reset_attr,
4095         &ipr_update_fw_attr,
4096         &ipr_ioa_fw_type_attr,
4097         &ipr_iopoll_weight_attr,
4098         NULL,
4099 };
4100
4101 #ifdef CONFIG_SCSI_IPR_DUMP
4102 /**
4103  * ipr_read_dump - Dump the adapter
4104  * @filp:               open sysfs file
4105  * @kobj:               kobject struct
4106  * @bin_attr:           bin_attribute struct
4107  * @buf:                buffer
4108  * @off:                offset
4109  * @count:              buffer size
4110  *
4111  * Return value:
4112  *      number of bytes printed to buffer
4113  **/
4114 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4115                              struct bin_attribute *bin_attr,
4116                              char *buf, loff_t off, size_t count)
4117 {
4118         struct device *cdev = container_of(kobj, struct device, kobj);
4119         struct Scsi_Host *shost = class_to_shost(cdev);
4120         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4121         struct ipr_dump *dump;
4122         unsigned long lock_flags = 0;
4123         char *src;
4124         int len, sdt_end;
4125         size_t rc = count;
4126
4127         if (!capable(CAP_SYS_ADMIN))
4128                 return -EACCES;
4129
4130         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4131         dump = ioa_cfg->dump;
4132
4133         if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4134                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4135                 return 0;
4136         }
4137         kref_get(&dump->kref);
4138         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4139
4140         if (off > dump->driver_dump.hdr.len) {
4141                 kref_put(&dump->kref, ipr_release_dump);
4142                 return 0;
4143         }
4144
4145         if (off + count > dump->driver_dump.hdr.len) {
4146                 count = dump->driver_dump.hdr.len - off;
4147                 rc = count;
4148         }
4149
4150         if (count && off < sizeof(dump->driver_dump)) {
4151                 if (off + count > sizeof(dump->driver_dump))
4152                         len = sizeof(dump->driver_dump) - off;
4153                 else
4154                         len = count;
4155                 src = (u8 *)&dump->driver_dump + off;
4156                 memcpy(buf, src, len);
4157                 buf += len;
4158                 off += len;
4159                 count -= len;
4160         }
4161
4162         off -= sizeof(dump->driver_dump);
4163
4164         if (ioa_cfg->sis64)
4165                 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4166                           (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4167                            sizeof(struct ipr_sdt_entry));
4168         else
4169                 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4170                           (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4171
4172         if (count && off < sdt_end) {
4173                 if (off + count > sdt_end)
4174                         len = sdt_end - off;
4175                 else
4176                         len = count;
4177                 src = (u8 *)&dump->ioa_dump + off;
4178                 memcpy(buf, src, len);
4179                 buf += len;
4180                 off += len;
4181                 count -= len;
4182         }
4183
4184         off -= sdt_end;
4185
4186         while (count) {
4187                 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4188                         len = PAGE_ALIGN(off) - off;
4189                 else
4190                         len = count;
4191                 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4192                 src += off & ~PAGE_MASK;
4193                 memcpy(buf, src, len);
4194                 buf += len;
4195                 off += len;
4196                 count -= len;
4197         }
4198
4199         kref_put(&dump->kref, ipr_release_dump);
4200         return rc;
4201 }
4202
4203 /**
4204  * ipr_alloc_dump - Prepare for adapter dump
4205  * @ioa_cfg:    ioa config struct
4206  *
4207  * Return value:
4208  *      0 on success / other on failure
4209  **/
4210 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4211 {
4212         struct ipr_dump *dump;
4213         __be32 **ioa_data;
4214         unsigned long lock_flags = 0;
4215
4216         dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4217
4218         if (!dump) {
4219                 ipr_err("Dump memory allocation failed\n");
4220                 return -ENOMEM;
4221         }
4222
4223         if (ioa_cfg->sis64)
4224                 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4225         else
4226                 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4227
4228         if (!ioa_data) {
4229                 ipr_err("Dump memory allocation failed\n");
4230                 kfree(dump);
4231                 return -ENOMEM;
4232         }
4233
4234         dump->ioa_dump.ioa_data = ioa_data;
4235
4236         kref_init(&dump->kref);
4237         dump->ioa_cfg = ioa_cfg;
4238
4239         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4240
4241         if (INACTIVE != ioa_cfg->sdt_state) {
4242                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4243                 vfree(dump->ioa_dump.ioa_data);
4244                 kfree(dump);
4245                 return 0;
4246         }
4247
4248         ioa_cfg->dump = dump;
4249         ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4250         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4251                 ioa_cfg->dump_taken = 1;
4252                 schedule_work(&ioa_cfg->work_q);
4253         }
4254         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4255
4256         return 0;
4257 }
4258
4259 /**
4260  * ipr_free_dump - Free adapter dump memory
4261  * @ioa_cfg:    ioa config struct
4262  *
4263  * Return value:
4264  *      0 on success / other on failure
4265  **/
4266 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4267 {
4268         struct ipr_dump *dump;
4269         unsigned long lock_flags = 0;
4270
4271         ENTER;
4272
4273         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4274         dump = ioa_cfg->dump;
4275         if (!dump) {
4276                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4277                 return 0;
4278         }
4279
4280         ioa_cfg->dump = NULL;
4281         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4282
4283         kref_put(&dump->kref, ipr_release_dump);
4284
4285         LEAVE;
4286         return 0;
4287 }
4288
4289 /**
4290  * ipr_write_dump - Setup dump state of adapter
4291  * @filp:               open sysfs file
4292  * @kobj:               kobject struct
4293  * @bin_attr:           bin_attribute struct
4294  * @buf:                buffer
4295  * @off:                offset
4296  * @count:              buffer size
4297  *
4298  * Return value:
4299  *      number of bytes printed to buffer
4300  **/
4301 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4302                               struct bin_attribute *bin_attr,
4303                               char *buf, loff_t off, size_t count)
4304 {
4305         struct device *cdev = container_of(kobj, struct device, kobj);
4306         struct Scsi_Host *shost = class_to_shost(cdev);
4307         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4308         int rc;
4309
4310         if (!capable(CAP_SYS_ADMIN))
4311                 return -EACCES;
4312
4313         if (buf[0] == '1')
4314                 rc = ipr_alloc_dump(ioa_cfg);
4315         else if (buf[0] == '0')
4316                 rc = ipr_free_dump(ioa_cfg);
4317         else
4318                 return -EINVAL;
4319
4320         if (rc)
4321                 return rc;
4322         else
4323                 return count;
4324 }
4325
4326 static struct bin_attribute ipr_dump_attr = {
4327         .attr = {
4328                 .name = "dump",
4329                 .mode = S_IRUSR | S_IWUSR,
4330         },
4331         .size = 0,
4332         .read = ipr_read_dump,
4333         .write = ipr_write_dump
4334 };
4335 #else
4336 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4337 #endif
4338
4339 /**
4340  * ipr_change_queue_depth - Change the device's queue depth
4341  * @sdev:       scsi device struct
4342  * @qdepth:     depth to set
4343  * @reason:     calling context
4344  *
4345  * Return value:
4346  *      actual depth set
4347  **/
4348 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4349 {
4350         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4351         struct ipr_resource_entry *res;
4352         unsigned long lock_flags = 0;
4353
4354         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4355         res = (struct ipr_resource_entry *)sdev->hostdata;
4356
4357         if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4358                 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4359         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4360
4361         scsi_change_queue_depth(sdev, qdepth);
4362         return sdev->queue_depth;
4363 }
4364
4365 /**
4366  * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4367  * @dev:        device struct
4368  * @attr:       device attribute structure
4369  * @buf:        buffer
4370  *
4371  * Return value:
4372  *      number of bytes printed to buffer
4373  **/
4374 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4375 {
4376         struct scsi_device *sdev = to_scsi_device(dev);
4377         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4378         struct ipr_resource_entry *res;
4379         unsigned long lock_flags = 0;
4380         ssize_t len = -ENXIO;
4381
4382         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4383         res = (struct ipr_resource_entry *)sdev->hostdata;
4384         if (res)
4385                 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4386         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4387         return len;
4388 }
4389
4390 static struct device_attribute ipr_adapter_handle_attr = {
4391         .attr = {
4392                 .name =         "adapter_handle",
4393                 .mode =         S_IRUSR,
4394         },
4395         .show = ipr_show_adapter_handle
4396 };
4397
4398 /**
4399  * ipr_show_resource_path - Show the resource path or the resource address for
4400  *                          this device.
4401  * @dev:        device struct
4402  * @attr:       device attribute structure
4403  * @buf:        buffer
4404  *
4405  * Return value:
4406  *      number of bytes printed to buffer
4407  **/
4408 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4409 {
4410         struct scsi_device *sdev = to_scsi_device(dev);
4411         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4412         struct ipr_resource_entry *res;
4413         unsigned long lock_flags = 0;
4414         ssize_t len = -ENXIO;
4415         char buffer[IPR_MAX_RES_PATH_LENGTH];
4416
4417         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4418         res = (struct ipr_resource_entry *)sdev->hostdata;
4419         if (res && ioa_cfg->sis64)
4420                 len = snprintf(buf, PAGE_SIZE, "%s\n",
4421                                __ipr_format_res_path(res->res_path, buffer,
4422                                                      sizeof(buffer)));
4423         else if (res)
4424                 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4425                                res->bus, res->target, res->lun);
4426
4427         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4428         return len;
4429 }
4430
4431 static struct device_attribute ipr_resource_path_attr = {
4432         .attr = {
4433                 .name =         "resource_path",
4434                 .mode =         S_IRUGO,
4435         },
4436         .show = ipr_show_resource_path
4437 };
4438
4439 /**
4440  * ipr_show_device_id - Show the device_id for this device.
4441  * @dev:        device struct
4442  * @attr:       device attribute structure
4443  * @buf:        buffer
4444  *
4445  * Return value:
4446  *      number of bytes printed to buffer
4447  **/
4448 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4449 {
4450         struct scsi_device *sdev = to_scsi_device(dev);
4451         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4452         struct ipr_resource_entry *res;
4453         unsigned long lock_flags = 0;
4454         ssize_t len = -ENXIO;
4455
4456         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4457         res = (struct ipr_resource_entry *)sdev->hostdata;
4458         if (res && ioa_cfg->sis64)
4459                 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
4460         else if (res)
4461                 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4462
4463         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4464         return len;
4465 }
4466
4467 static struct device_attribute ipr_device_id_attr = {
4468         .attr = {
4469                 .name =         "device_id",
4470                 .mode =         S_IRUGO,
4471         },
4472         .show = ipr_show_device_id
4473 };
4474
4475 /**
4476  * ipr_show_resource_type - Show the resource type for this device.
4477  * @dev:        device struct
4478  * @attr:       device attribute structure
4479  * @buf:        buffer
4480  *
4481  * Return value:
4482  *      number of bytes printed to buffer
4483  **/
4484 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4485 {
4486         struct scsi_device *sdev = to_scsi_device(dev);
4487         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4488         struct ipr_resource_entry *res;
4489         unsigned long lock_flags = 0;
4490         ssize_t len = -ENXIO;
4491
4492         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4493         res = (struct ipr_resource_entry *)sdev->hostdata;
4494
4495         if (res)
4496                 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4497
4498         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4499         return len;
4500 }
4501
4502 static struct device_attribute ipr_resource_type_attr = {
4503         .attr = {
4504                 .name =         "resource_type",
4505                 .mode =         S_IRUGO,
4506         },
4507         .show = ipr_show_resource_type
4508 };
4509
4510 /**
4511  * ipr_show_raw_mode - Show the adapter's raw mode
4512  * @dev:        class device struct
4513  * @buf:        buffer
4514  *
4515  * Return value:
4516  *      number of bytes printed to buffer
4517  **/
4518 static ssize_t ipr_show_raw_mode(struct device *dev,
4519                                  struct device_attribute *attr, char *buf)
4520 {
4521         struct scsi_device *sdev = to_scsi_device(dev);
4522         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4523         struct ipr_resource_entry *res;
4524         unsigned long lock_flags = 0;
4525         ssize_t len;
4526
4527         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4528         res = (struct ipr_resource_entry *)sdev->hostdata;
4529         if (res)
4530                 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode);
4531         else
4532                 len = -ENXIO;
4533         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4534         return len;
4535 }
4536
4537 /**
4538  * ipr_store_raw_mode - Change the adapter's raw mode
4539  * @dev:        class device struct
4540  * @buf:        buffer
4541  *
4542  * Return value:
4543  *      number of bytes printed to buffer
4544  **/
4545 static ssize_t ipr_store_raw_mode(struct device *dev,
4546                                   struct device_attribute *attr,
4547                                   const char *buf, size_t count)
4548 {
4549         struct scsi_device *sdev = to_scsi_device(dev);
4550         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4551         struct ipr_resource_entry *res;
4552         unsigned long lock_flags = 0;
4553         ssize_t len;
4554
4555         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4556         res = (struct ipr_resource_entry *)sdev->hostdata;
4557         if (res) {
4558                 if (ioa_cfg->sis64 && ipr_is_af_dasd_device(res)) {
4559                         res->raw_mode = simple_strtoul(buf, NULL, 10);
4560                         len = strlen(buf);
4561                         if (res->sdev)
4562                                 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n",
4563                                         res->raw_mode ? "enabled" : "disabled");
4564                 } else
4565                         len = -EINVAL;
4566         } else
4567                 len = -ENXIO;
4568         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4569         return len;
4570 }
4571
4572 static struct device_attribute ipr_raw_mode_attr = {
4573         .attr = {
4574                 .name =         "raw_mode",
4575                 .mode =         S_IRUGO | S_IWUSR,
4576         },
4577         .show = ipr_show_raw_mode,
4578         .store = ipr_store_raw_mode
4579 };
4580
4581 static struct device_attribute *ipr_dev_attrs[] = {
4582         &ipr_adapter_handle_attr,
4583         &ipr_resource_path_attr,
4584         &ipr_device_id_attr,
4585         &ipr_resource_type_attr,
4586         &ipr_raw_mode_attr,
4587         NULL,
4588 };
4589
4590 /**
4591  * ipr_biosparam - Return the HSC mapping
4592  * @sdev:                       scsi device struct
4593  * @block_device:       block device pointer
4594  * @capacity:           capacity of the device
4595  * @parm:                       Array containing returned HSC values.
4596  *
4597  * This function generates the HSC parms that fdisk uses.
4598  * We want to make sure we return something that places partitions
4599  * on 4k boundaries for best performance with the IOA.
4600  *
4601  * Return value:
4602  *      0 on success
4603  **/
4604 static int ipr_biosparam(struct scsi_device *sdev,
4605                          struct block_device *block_device,
4606                          sector_t capacity, int *parm)
4607 {
4608         int heads, sectors;
4609         sector_t cylinders;
4610
4611         heads = 128;
4612         sectors = 32;
4613
4614         cylinders = capacity;
4615         sector_div(cylinders, (128 * 32));
4616
4617         /* return result */
4618         parm[0] = heads;
4619         parm[1] = sectors;
4620         parm[2] = cylinders;
4621
4622         return 0;
4623 }
4624
4625 /**
4626  * ipr_find_starget - Find target based on bus/target.
4627  * @starget:    scsi target struct
4628  *
4629  * Return value:
4630  *      resource entry pointer if found / NULL if not found
4631  **/
4632 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4633 {
4634         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4635         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4636         struct ipr_resource_entry *res;
4637
4638         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4639                 if ((res->bus == starget->channel) &&
4640                     (res->target == starget->id)) {
4641                         return res;
4642                 }
4643         }
4644
4645         return NULL;
4646 }
4647
4648 static struct ata_port_info sata_port_info;
4649
4650 /**
4651  * ipr_target_alloc - Prepare for commands to a SCSI target
4652  * @starget:    scsi target struct
4653  *
4654  * If the device is a SATA device, this function allocates an
4655  * ATA port with libata, else it does nothing.
4656  *
4657  * Return value:
4658  *      0 on success / non-0 on failure
4659  **/
4660 static int ipr_target_alloc(struct scsi_target *starget)
4661 {
4662         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4663         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4664         struct ipr_sata_port *sata_port;
4665         struct ata_port *ap;
4666         struct ipr_resource_entry *res;
4667         unsigned long lock_flags;
4668
4669         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4670         res = ipr_find_starget(starget);
4671         starget->hostdata = NULL;
4672
4673         if (res && ipr_is_gata(res)) {
4674                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4675                 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4676                 if (!sata_port)
4677                         return -ENOMEM;
4678
4679                 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4680                 if (ap) {
4681                         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4682                         sata_port->ioa_cfg = ioa_cfg;
4683                         sata_port->ap = ap;
4684                         sata_port->res = res;
4685
4686                         res->sata_port = sata_port;
4687                         ap->private_data = sata_port;
4688                         starget->hostdata = sata_port;
4689                 } else {
4690                         kfree(sata_port);
4691                         return -ENOMEM;
4692                 }
4693         }
4694         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4695
4696         return 0;
4697 }
4698
4699 /**
4700  * ipr_target_destroy - Destroy a SCSI target
4701  * @starget:    scsi target struct
4702  *
4703  * If the device was a SATA device, this function frees the libata
4704  * ATA port, else it does nothing.
4705  *
4706  **/
4707 static void ipr_target_destroy(struct scsi_target *starget)
4708 {
4709         struct ipr_sata_port *sata_port = starget->hostdata;
4710         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4711         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4712
4713         if (ioa_cfg->sis64) {
4714                 if (!ipr_find_starget(starget)) {
4715                         if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4716                                 clear_bit(starget->id, ioa_cfg->array_ids);
4717                         else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4718                                 clear_bit(starget->id, ioa_cfg->vset_ids);
4719                         else if (starget->channel == 0)
4720                                 clear_bit(starget->id, ioa_cfg->target_ids);
4721                 }
4722         }
4723
4724         if (sata_port) {
4725                 starget->hostdata = NULL;
4726                 ata_sas_port_destroy(sata_port->ap);
4727                 kfree(sata_port);
4728         }
4729 }
4730
4731 /**
4732  * ipr_find_sdev - Find device based on bus/target/lun.
4733  * @sdev:       scsi device struct
4734  *
4735  * Return value:
4736  *      resource entry pointer if found / NULL if not found
4737  **/
4738 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4739 {
4740         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4741         struct ipr_resource_entry *res;
4742
4743         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4744                 if ((res->bus == sdev->channel) &&
4745                     (res->target == sdev->id) &&
4746                     (res->lun == sdev->lun))
4747                         return res;
4748         }
4749
4750         return NULL;
4751 }
4752
4753 /**
4754  * ipr_slave_destroy - Unconfigure a SCSI device
4755  * @sdev:       scsi device struct
4756  *
4757  * Return value:
4758  *      nothing
4759  **/
4760 static void ipr_slave_destroy(struct scsi_device *sdev)
4761 {
4762         struct ipr_resource_entry *res;
4763         struct ipr_ioa_cfg *ioa_cfg;
4764         unsigned long lock_flags = 0;
4765
4766         ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4767
4768         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4769         res = (struct ipr_resource_entry *) sdev->hostdata;
4770         if (res) {
4771                 if (res->sata_port)
4772                         res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4773                 sdev->hostdata = NULL;
4774                 res->sdev = NULL;
4775                 res->sata_port = NULL;
4776         }
4777         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4778 }
4779
4780 /**
4781  * ipr_slave_configure - Configure a SCSI device
4782  * @sdev:       scsi device struct
4783  *
4784  * This function configures the specified scsi device.
4785  *
4786  * Return value:
4787  *      0 on success
4788  **/
4789 static int ipr_slave_configure(struct scsi_device *sdev)
4790 {
4791         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4792         struct ipr_resource_entry *res;
4793         struct ata_port *ap = NULL;
4794         unsigned long lock_flags = 0;
4795         char buffer[IPR_MAX_RES_PATH_LENGTH];
4796
4797         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4798         res = sdev->hostdata;
4799         if (res) {
4800                 if (ipr_is_af_dasd_device(res))
4801                         sdev->type = TYPE_RAID;
4802                 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4803                         sdev->scsi_level = 4;
4804                         sdev->no_uld_attach = 1;
4805                 }
4806                 if (ipr_is_vset_device(res)) {
4807                         sdev->scsi_level = SCSI_SPC_3;
4808                         blk_queue_rq_timeout(sdev->request_queue,
4809                                              IPR_VSET_RW_TIMEOUT);
4810                         blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4811                 }
4812                 if (ipr_is_gata(res) && res->sata_port)
4813                         ap = res->sata_port->ap;
4814                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4815
4816                 if (ap) {
4817                         scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN);
4818                         ata_sas_slave_configure(sdev, ap);
4819                 }
4820
4821                 if (ioa_cfg->sis64)
4822                         sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4823                                     ipr_format_res_path(ioa_cfg,
4824                                 res->res_path, buffer, sizeof(buffer)));
4825                 return 0;
4826         }
4827         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4828         return 0;
4829 }
4830
4831 /**
4832  * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4833  * @sdev:       scsi device struct
4834  *
4835  * This function initializes an ATA port so that future commands
4836  * sent through queuecommand will work.
4837  *
4838  * Return value:
4839  *      0 on success
4840  **/
4841 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4842 {
4843         struct ipr_sata_port *sata_port = NULL;
4844         int rc = -ENXIO;
4845
4846         ENTER;
4847         if (sdev->sdev_target)
4848                 sata_port = sdev->sdev_target->hostdata;
4849         if (sata_port) {
4850                 rc = ata_sas_port_init(sata_port->ap);
4851                 if (rc == 0)
4852                         rc = ata_sas_sync_probe(sata_port->ap);
4853         }
4854
4855         if (rc)
4856                 ipr_slave_destroy(sdev);
4857
4858         LEAVE;
4859         return rc;
4860 }
4861
4862 /**
4863  * ipr_slave_alloc - Prepare for commands to a device.
4864  * @sdev:       scsi device struct
4865  *
4866  * This function saves a pointer to the resource entry
4867  * in the scsi device struct if the device exists. We
4868  * can then use this pointer in ipr_queuecommand when
4869  * handling new commands.
4870  *
4871  * Return value:
4872  *      0 on success / -ENXIO if device does not exist
4873  **/
4874 static int ipr_slave_alloc(struct scsi_device *sdev)
4875 {
4876         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4877         struct ipr_resource_entry *res;
4878         unsigned long lock_flags;
4879         int rc = -ENXIO;
4880
4881         sdev->hostdata = NULL;
4882
4883         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4884
4885         res = ipr_find_sdev(sdev);
4886         if (res) {
4887                 res->sdev = sdev;
4888                 res->add_to_ml = 0;
4889                 res->in_erp = 0;
4890                 sdev->hostdata = res;
4891                 if (!ipr_is_naca_model(res))
4892                         res->needs_sync_complete = 1;
4893                 rc = 0;
4894                 if (ipr_is_gata(res)) {
4895                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4896                         return ipr_ata_slave_alloc(sdev);
4897                 }
4898         }
4899
4900         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4901
4902         return rc;
4903 }
4904
4905 /**
4906  * ipr_match_lun - Match function for specified LUN
4907  * @ipr_cmd:    ipr command struct
4908  * @device:             device to match (sdev)
4909  *
4910  * Returns:
4911  *      1 if command matches sdev / 0 if command does not match sdev
4912  **/
4913 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device)
4914 {
4915         if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device)
4916                 return 1;
4917         return 0;
4918 }
4919
4920 /**
4921  * ipr_wait_for_ops - Wait for matching commands to complete
4922  * @ipr_cmd:    ipr command struct
4923  * @device:             device to match (sdev)
4924  * @match:              match function to use
4925  *
4926  * Returns:
4927  *      SUCCESS / FAILED
4928  **/
4929 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device,
4930                             int (*match)(struct ipr_cmnd *, void *))
4931 {
4932         struct ipr_cmnd *ipr_cmd;
4933         int wait;
4934         unsigned long flags;
4935         struct ipr_hrr_queue *hrrq;
4936         signed long timeout = IPR_ABORT_TASK_TIMEOUT;
4937         DECLARE_COMPLETION_ONSTACK(comp);
4938
4939         ENTER;
4940         do {
4941                 wait = 0;
4942
4943                 for_each_hrrq(hrrq, ioa_cfg) {
4944                         spin_lock_irqsave(hrrq->lock, flags);
4945                         list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4946                                 if (match(ipr_cmd, device)) {
4947                                         ipr_cmd->eh_comp = &comp;
4948                                         wait++;
4949                                 }
4950                         }
4951                         spin_unlock_irqrestore(hrrq->lock, flags);
4952                 }
4953
4954                 if (wait) {
4955                         timeout = wait_for_completion_timeout(&comp, timeout);
4956
4957                         if (!timeout) {
4958                                 wait = 0;
4959
4960                                 for_each_hrrq(hrrq, ioa_cfg) {
4961                                         spin_lock_irqsave(hrrq->lock, flags);
4962                                         list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4963                                                 if (match(ipr_cmd, device)) {
4964                                                         ipr_cmd->eh_comp = NULL;
4965                                                         wait++;
4966                                                 }
4967                                         }
4968                                         spin_unlock_irqrestore(hrrq->lock, flags);
4969                                 }
4970
4971                                 if (wait)
4972                                         dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n");
4973                                 LEAVE;
4974                                 return wait ? FAILED : SUCCESS;
4975                         }
4976                 }
4977         } while (wait);
4978
4979         LEAVE;
4980         return SUCCESS;
4981 }
4982
4983 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
4984 {
4985         struct ipr_ioa_cfg *ioa_cfg;
4986         unsigned long lock_flags = 0;
4987         int rc = SUCCESS;
4988
4989         ENTER;
4990         ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
4991         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4992
4993         if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
4994                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4995                 dev_err(&ioa_cfg->pdev->dev,
4996                         "Adapter being reset as a result of error recovery.\n");
4997
4998                 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4999                         ioa_cfg->sdt_state = GET_DUMP;
5000         }
5001
5002         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5003         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5004         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5005
5006         /* If we got hit with a host reset while we were already resetting
5007          the adapter for some reason, and the reset failed. */
5008         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5009                 ipr_trace;
5010                 rc = FAILED;
5011         }
5012
5013         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5014         LEAVE;
5015         return rc;
5016 }
5017
5018 /**
5019  * ipr_device_reset - Reset the device
5020  * @ioa_cfg:    ioa config struct
5021  * @res:                resource entry struct
5022  *
5023  * This function issues a device reset to the affected device.
5024  * If the device is a SCSI device, a LUN reset will be sent
5025  * to the device first. If that does not work, a target reset
5026  * will be sent. If the device is a SATA device, a PHY reset will
5027  * be sent.
5028  *
5029  * Return value:
5030  *      0 on success / non-zero on failure
5031  **/
5032 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
5033                             struct ipr_resource_entry *res)
5034 {
5035         struct ipr_cmnd *ipr_cmd;
5036         struct ipr_ioarcb *ioarcb;
5037         struct ipr_cmd_pkt *cmd_pkt;
5038         struct ipr_ioarcb_ata_regs *regs;
5039         u32 ioasc;
5040
5041         ENTER;
5042         ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5043         ioarcb = &ipr_cmd->ioarcb;
5044         cmd_pkt = &ioarcb->cmd_pkt;
5045
5046         if (ipr_cmd->ioa_cfg->sis64) {
5047                 regs = &ipr_cmd->i.ata_ioadl.regs;
5048                 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5049         } else
5050                 regs = &ioarcb->u.add_data.u.regs;
5051
5052         ioarcb->res_handle = res->res_handle;
5053         cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5054         cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5055         if (ipr_is_gata(res)) {
5056                 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
5057                 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
5058                 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5059         }
5060
5061         ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5062         ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5063         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5064         if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
5065                 if (ipr_cmd->ioa_cfg->sis64)
5066                         memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5067                                sizeof(struct ipr_ioasa_gata));
5068                 else
5069                         memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5070                                sizeof(struct ipr_ioasa_gata));
5071         }
5072
5073         LEAVE;
5074         return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
5075 }
5076
5077 /**
5078  * ipr_sata_reset - Reset the SATA port
5079  * @link:       SATA link to reset
5080  * @classes:    class of the attached device
5081  *
5082  * This function issues a SATA phy reset to the affected ATA link.
5083  *
5084  * Return value:
5085  *      0 on success / non-zero on failure
5086  **/
5087 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
5088                                 unsigned long deadline)
5089 {
5090         struct ipr_sata_port *sata_port = link->ap->private_data;
5091         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5092         struct ipr_resource_entry *res;
5093         unsigned long lock_flags = 0;
5094         int rc = -ENXIO;
5095
5096         ENTER;
5097         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5098         while (ioa_cfg->in_reset_reload) {
5099                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5100                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5101                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5102         }
5103
5104         res = sata_port->res;
5105         if (res) {
5106                 rc = ipr_device_reset(ioa_cfg, res);
5107                 *classes = res->ata_class;
5108         }
5109
5110         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5111         LEAVE;
5112         return rc;
5113 }
5114
5115 /**
5116  * ipr_eh_dev_reset - Reset the device
5117  * @scsi_cmd:   scsi command struct
5118  *
5119  * This function issues a device reset to the affected device.
5120  * A LUN reset will be sent to the device first. If that does
5121  * not work, a target reset will be sent.
5122  *
5123  * Return value:
5124  *      SUCCESS / FAILED
5125  **/
5126 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
5127 {
5128         struct ipr_cmnd *ipr_cmd;
5129         struct ipr_ioa_cfg *ioa_cfg;
5130         struct ipr_resource_entry *res;
5131         struct ata_port *ap;
5132         int rc = 0;
5133         struct ipr_hrr_queue *hrrq;
5134
5135         ENTER;
5136         ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5137         res = scsi_cmd->device->hostdata;
5138
5139         if (!res)
5140                 return FAILED;
5141
5142         /*
5143          * If we are currently going through reset/reload, return failed. This will force the
5144          * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5145          * reset to complete
5146          */
5147         if (ioa_cfg->in_reset_reload)
5148                 return FAILED;
5149         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5150                 return FAILED;
5151
5152         for_each_hrrq(hrrq, ioa_cfg) {
5153                 spin_lock(&hrrq->_lock);
5154                 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5155                         if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5156                                 if (ipr_cmd->scsi_cmd)
5157                                         ipr_cmd->done = ipr_scsi_eh_done;
5158                                 if (ipr_cmd->qc)
5159                                         ipr_cmd->done = ipr_sata_eh_done;
5160                                 if (ipr_cmd->qc &&
5161                                     !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
5162                                         ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
5163                                         ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
5164                                 }
5165                         }
5166                 }
5167                 spin_unlock(&hrrq->_lock);
5168         }
5169         res->resetting_device = 1;
5170         scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5171
5172         if (ipr_is_gata(res) && res->sata_port) {
5173                 ap = res->sata_port->ap;
5174                 spin_unlock_irq(scsi_cmd->device->host->host_lock);
5175                 ata_std_error_handler(ap);
5176                 spin_lock_irq(scsi_cmd->device->host->host_lock);
5177
5178                 for_each_hrrq(hrrq, ioa_cfg) {
5179                         spin_lock(&hrrq->_lock);
5180                         list_for_each_entry(ipr_cmd,
5181                                             &hrrq->hrrq_pending_q, queue) {
5182                                 if (ipr_cmd->ioarcb.res_handle ==
5183                                     res->res_handle) {
5184                                         rc = -EIO;
5185                                         break;
5186                                 }
5187                         }
5188                         spin_unlock(&hrrq->_lock);
5189                 }
5190         } else
5191                 rc = ipr_device_reset(ioa_cfg, res);
5192         res->resetting_device = 0;
5193         res->reset_occurred = 1;
5194
5195         LEAVE;
5196         return rc ? FAILED : SUCCESS;
5197 }
5198
5199 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5200 {
5201         int rc;
5202         struct ipr_ioa_cfg *ioa_cfg;
5203
5204         ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5205
5206         spin_lock_irq(cmd->device->host->host_lock);
5207         rc = __ipr_eh_dev_reset(cmd);
5208         spin_unlock_irq(cmd->device->host->host_lock);
5209
5210         if (rc == SUCCESS)
5211                 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun);
5212
5213         return rc;
5214 }
5215
5216 /**
5217  * ipr_bus_reset_done - Op done function for bus reset.
5218  * @ipr_cmd:    ipr command struct
5219  *
5220  * This function is the op done function for a bus reset
5221  *
5222  * Return value:
5223  *      none
5224  **/
5225 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5226 {
5227         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5228         struct ipr_resource_entry *res;
5229
5230         ENTER;
5231         if (!ioa_cfg->sis64)
5232                 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5233                         if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5234                                 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5235                                 break;
5236                         }
5237                 }
5238
5239         /*
5240          * If abort has not completed, indicate the reset has, else call the
5241          * abort's done function to wake the sleeping eh thread
5242          */
5243         if (ipr_cmd->sibling->sibling)
5244                 ipr_cmd->sibling->sibling = NULL;
5245         else
5246                 ipr_cmd->sibling->done(ipr_cmd->sibling);
5247
5248         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5249         LEAVE;
5250 }
5251
5252 /**
5253  * ipr_abort_timeout - An abort task has timed out
5254  * @ipr_cmd:    ipr command struct
5255  *
5256  * This function handles when an abort task times out. If this
5257  * happens we issue a bus reset since we have resources tied
5258  * up that must be freed before returning to the midlayer.
5259  *
5260  * Return value:
5261  *      none
5262  **/
5263 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
5264 {
5265         struct ipr_cmnd *reset_cmd;
5266         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5267         struct ipr_cmd_pkt *cmd_pkt;
5268         unsigned long lock_flags = 0;
5269
5270         ENTER;
5271         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5272         if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5273                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5274                 return;
5275         }
5276
5277         sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5278         reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5279         ipr_cmd->sibling = reset_cmd;
5280         reset_cmd->sibling = ipr_cmd;
5281         reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5282         cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5283         cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5284         cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5285         cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5286
5287         ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5288         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5289         LEAVE;
5290 }
5291
5292 /**
5293  * ipr_cancel_op - Cancel specified op
5294  * @scsi_cmd:   scsi command struct
5295  *
5296  * This function cancels specified op.
5297  *
5298  * Return value:
5299  *      SUCCESS / FAILED
5300  **/
5301 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5302 {
5303         struct ipr_cmnd *ipr_cmd;
5304         struct ipr_ioa_cfg *ioa_cfg;
5305         struct ipr_resource_entry *res;
5306         struct ipr_cmd_pkt *cmd_pkt;
5307         u32 ioasc, int_reg;
5308         int op_found = 0;
5309         struct ipr_hrr_queue *hrrq;
5310
5311         ENTER;
5312         ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5313         res = scsi_cmd->device->hostdata;
5314
5315         /* If we are currently going through reset/reload, return failed.
5316          * This will force the mid-layer to call ipr_eh_host_reset,
5317          * which will then go to sleep and wait for the reset to complete
5318          */
5319         if (ioa_cfg->in_reset_reload ||
5320             ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5321                 return FAILED;
5322         if (!res)
5323                 return FAILED;
5324
5325         /*
5326          * If we are aborting a timed out op, chances are that the timeout was caused
5327          * by a still not detected EEH error. In such cases, reading a register will
5328          * trigger the EEH recovery infrastructure.
5329          */
5330         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5331
5332         if (!ipr_is_gscsi(res))
5333                 return FAILED;
5334
5335         for_each_hrrq(hrrq, ioa_cfg) {
5336                 spin_lock(&hrrq->_lock);
5337                 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5338                         if (ipr_cmd->scsi_cmd == scsi_cmd) {
5339                                 ipr_cmd->done = ipr_scsi_eh_done;
5340                                 op_found = 1;
5341                                 break;
5342                         }
5343                 }
5344                 spin_unlock(&hrrq->_lock);
5345         }
5346
5347         if (!op_found)
5348                 return SUCCESS;
5349
5350         ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5351         ipr_cmd->ioarcb.res_handle = res->res_handle;
5352         cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5353         cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5354         cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5355         ipr_cmd->u.sdev = scsi_cmd->device;
5356
5357         scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5358                     scsi_cmd->cmnd[0]);
5359         ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5360         ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5361
5362         /*
5363          * If the abort task timed out and we sent a bus reset, we will get
5364          * one the following responses to the abort
5365          */
5366         if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5367                 ioasc = 0;
5368                 ipr_trace;
5369         }
5370
5371         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5372         if (!ipr_is_naca_model(res))
5373                 res->needs_sync_complete = 1;
5374
5375         LEAVE;
5376         return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5377 }
5378
5379 /**
5380  * ipr_eh_abort - Abort a single op
5381  * @scsi_cmd:   scsi command struct
5382  *
5383  * Return value:
5384  *      0 if scan in progress / 1 if scan is complete
5385  **/
5386 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time)
5387 {
5388         unsigned long lock_flags;
5389         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
5390         int rc = 0;
5391
5392         spin_lock_irqsave(shost->host_lock, lock_flags);
5393         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done)
5394                 rc = 1;
5395         if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2))
5396                 rc = 1;
5397         spin_unlock_irqrestore(shost->host_lock, lock_flags);
5398         return rc;
5399 }
5400
5401 /**
5402  * ipr_eh_host_reset - Reset the host adapter
5403  * @scsi_cmd:   scsi command struct
5404  *
5405  * Return value:
5406  *      SUCCESS / FAILED
5407  **/
5408 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5409 {
5410         unsigned long flags;
5411         int rc;
5412         struct ipr_ioa_cfg *ioa_cfg;
5413
5414         ENTER;
5415
5416         ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5417
5418         spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5419         rc = ipr_cancel_op(scsi_cmd);
5420         spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5421
5422         if (rc == SUCCESS)
5423                 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun);
5424         LEAVE;
5425         return rc;
5426 }
5427
5428 /**
5429  * ipr_handle_other_interrupt - Handle "other" interrupts
5430  * @ioa_cfg:    ioa config struct
5431  * @int_reg:    interrupt register
5432  *
5433  * Return value:
5434  *      IRQ_NONE / IRQ_HANDLED
5435  **/
5436 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5437                                               u32 int_reg)
5438 {
5439         irqreturn_t rc = IRQ_HANDLED;
5440         u32 int_mask_reg;
5441
5442         int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5443         int_reg &= ~int_mask_reg;
5444
5445         /* If an interrupt on the adapter did not occur, ignore it.
5446          * Or in the case of SIS 64, check for a stage change interrupt.
5447          */
5448         if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5449                 if (ioa_cfg->sis64) {
5450                         int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5451                         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5452                         if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5453
5454                                 /* clear stage change */
5455                                 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5456                                 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5457                                 list_del(&ioa_cfg->reset_cmd->queue);
5458                                 del_timer(&ioa_cfg->reset_cmd->timer);
5459                                 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5460                                 return IRQ_HANDLED;
5461                         }
5462                 }
5463
5464                 return IRQ_NONE;
5465         }
5466
5467         if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5468                 /* Mask the interrupt */
5469                 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5470                 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5471
5472                 list_del(&ioa_cfg->reset_cmd->queue);
5473                 del_timer(&ioa_cfg->reset_cmd->timer);
5474                 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5475         } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5476                 if (ioa_cfg->clear_isr) {
5477                         if (ipr_debug && printk_ratelimit())
5478                                 dev_err(&ioa_cfg->pdev->dev,
5479                                         "Spurious interrupt detected. 0x%08X\n", int_reg);
5480                         writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5481                         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5482                         return IRQ_NONE;
5483                 }
5484         } else {
5485                 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5486                         ioa_cfg->ioa_unit_checked = 1;
5487                 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5488                         dev_err(&ioa_cfg->pdev->dev,
5489                                 "No Host RRQ. 0x%08X\n", int_reg);
5490                 else
5491                         dev_err(&ioa_cfg->pdev->dev,
5492                                 "Permanent IOA failure. 0x%08X\n", int_reg);
5493
5494                 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5495                         ioa_cfg->sdt_state = GET_DUMP;
5496
5497                 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5498                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5499         }
5500
5501         return rc;
5502 }
5503
5504 /**
5505  * ipr_isr_eh - Interrupt service routine error handler
5506  * @ioa_cfg:    ioa config struct
5507  * @msg:        message to log
5508  *
5509  * Return value:
5510  *      none
5511  **/
5512 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5513 {
5514         ioa_cfg->errors_logged++;
5515         dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5516
5517         if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5518                 ioa_cfg->sdt_state = GET_DUMP;
5519
5520         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5521 }
5522
5523 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5524                                                 struct list_head *doneq)
5525 {
5526         u32 ioasc;
5527         u16 cmd_index;
5528         struct ipr_cmnd *ipr_cmd;
5529         struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5530         int num_hrrq = 0;
5531
5532         /* If interrupts are disabled, ignore the interrupt */
5533         if (!hrr_queue->allow_interrupts)
5534                 return 0;
5535
5536         while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5537                hrr_queue->toggle_bit) {
5538
5539                 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5540                              IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5541                              IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5542
5543                 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5544                              cmd_index < hrr_queue->min_cmd_id)) {
5545                         ipr_isr_eh(ioa_cfg,
5546                                 "Invalid response handle from IOA: ",
5547                                 cmd_index);
5548                         break;
5549                 }
5550
5551                 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5552                 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5553
5554                 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5555
5556                 list_move_tail(&ipr_cmd->queue, doneq);
5557
5558                 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5559                         hrr_queue->hrrq_curr++;
5560                 } else {
5561                         hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5562                         hrr_queue->toggle_bit ^= 1u;
5563                 }
5564                 num_hrrq++;
5565                 if (budget > 0 && num_hrrq >= budget)
5566                         break;
5567         }
5568
5569         return num_hrrq;
5570 }
5571
5572 static int ipr_iopoll(struct blk_iopoll *iop, int budget)
5573 {
5574         struct ipr_ioa_cfg *ioa_cfg;
5575         struct ipr_hrr_queue *hrrq;
5576         struct ipr_cmnd *ipr_cmd, *temp;
5577         unsigned long hrrq_flags;
5578         int completed_ops;
5579         LIST_HEAD(doneq);
5580
5581         hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5582         ioa_cfg = hrrq->ioa_cfg;
5583
5584         spin_lock_irqsave(hrrq->lock, hrrq_flags);
5585         completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5586
5587         if (completed_ops < budget)
5588                 blk_iopoll_complete(iop);
5589         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5590
5591         list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5592                 list_del(&ipr_cmd->queue);
5593                 del_timer(&ipr_cmd->timer);
5594                 ipr_cmd->fast_done(ipr_cmd);
5595         }
5596
5597         return completed_ops;
5598 }
5599
5600 /**
5601  * ipr_isr - Interrupt service routine
5602  * @irq:        irq number
5603  * @devp:       pointer to ioa config struct
5604  *
5605  * Return value:
5606  *      IRQ_NONE / IRQ_HANDLED
5607  **/
5608 static irqreturn_t ipr_isr(int irq, void *devp)
5609 {
5610         struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5611         struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5612         unsigned long hrrq_flags = 0;
5613         u32 int_reg = 0;
5614         int num_hrrq = 0;
5615         int irq_none = 0;
5616         struct ipr_cmnd *ipr_cmd, *temp;
5617         irqreturn_t rc = IRQ_NONE;
5618         LIST_HEAD(doneq);
5619
5620         spin_lock_irqsave(hrrq->lock, hrrq_flags);
5621         /* If interrupts are disabled, ignore the interrupt */
5622         if (!hrrq->allow_interrupts) {
5623                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5624                 return IRQ_NONE;
5625         }
5626
5627         while (1) {
5628                 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5629                         rc =  IRQ_HANDLED;
5630
5631                         if (!ioa_cfg->clear_isr)
5632                                 break;
5633
5634                         /* Clear the PCI interrupt */
5635                         num_hrrq = 0;
5636                         do {
5637                                 writel(IPR_PCII_HRRQ_UPDATED,
5638                                      ioa_cfg->regs.clr_interrupt_reg32);
5639                                 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5640                         } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5641                                 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5642
5643                 } else if (rc == IRQ_NONE && irq_none == 0) {
5644                         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5645                         irq_none++;
5646                 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5647                            int_reg & IPR_PCII_HRRQ_UPDATED) {
5648                         ipr_isr_eh(ioa_cfg,
5649                                 "Error clearing HRRQ: ", num_hrrq);
5650                         rc = IRQ_HANDLED;
5651                         break;
5652                 } else
5653                         break;
5654         }
5655
5656         if (unlikely(rc == IRQ_NONE))
5657                 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5658
5659         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5660         list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5661                 list_del(&ipr_cmd->queue);
5662                 del_timer(&ipr_cmd->timer);
5663                 ipr_cmd->fast_done(ipr_cmd);
5664         }
5665         return rc;
5666 }
5667
5668 /**
5669  * ipr_isr_mhrrq - Interrupt service routine
5670  * @irq:        irq number
5671  * @devp:       pointer to ioa config struct
5672  *
5673  * Return value:
5674  *      IRQ_NONE / IRQ_HANDLED
5675  **/
5676 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5677 {
5678         struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5679         struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5680         unsigned long hrrq_flags = 0;
5681         struct ipr_cmnd *ipr_cmd, *temp;
5682         irqreturn_t rc = IRQ_NONE;
5683         LIST_HEAD(doneq);
5684
5685         spin_lock_irqsave(hrrq->lock, hrrq_flags);
5686
5687         /* If interrupts are disabled, ignore the interrupt */
5688         if (!hrrq->allow_interrupts) {
5689                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5690                 return IRQ_NONE;
5691         }
5692
5693         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5694                 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5695                        hrrq->toggle_bit) {
5696                         if (!blk_iopoll_sched_prep(&hrrq->iopoll))
5697                                 blk_iopoll_sched(&hrrq->iopoll);
5698                         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5699                         return IRQ_HANDLED;
5700                 }
5701         } else {
5702                 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5703                         hrrq->toggle_bit)
5704
5705                         if (ipr_process_hrrq(hrrq, -1, &doneq))
5706                                 rc =  IRQ_HANDLED;
5707         }
5708
5709         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5710
5711         list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5712                 list_del(&ipr_cmd->queue);
5713                 del_timer(&ipr_cmd->timer);
5714                 ipr_cmd->fast_done(ipr_cmd);
5715         }
5716         return rc;
5717 }
5718
5719 /**
5720  * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5721  * @ioa_cfg:    ioa config struct
5722  * @ipr_cmd:    ipr command struct
5723  *
5724  * Return value:
5725  *      0 on success / -1 on failure
5726  **/
5727 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5728                              struct ipr_cmnd *ipr_cmd)
5729 {
5730         int i, nseg;
5731         struct scatterlist *sg;
5732         u32 length;
5733         u32 ioadl_flags = 0;
5734         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5735         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5736         struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5737
5738         length = scsi_bufflen(scsi_cmd);
5739         if (!length)
5740                 return 0;
5741
5742         nseg = scsi_dma_map(scsi_cmd);
5743         if (nseg < 0) {
5744                 if (printk_ratelimit())
5745                         dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5746                 return -1;
5747         }
5748
5749         ipr_cmd->dma_use_sg = nseg;
5750
5751         ioarcb->data_transfer_length = cpu_to_be32(length);
5752         ioarcb->ioadl_len =
5753                 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5754
5755         if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5756                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5757                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5758         } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5759                 ioadl_flags = IPR_IOADL_FLAGS_READ;
5760
5761         scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5762                 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5763                 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5764                 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5765         }
5766
5767         ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5768         return 0;
5769 }
5770
5771 /**
5772  * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5773  * @ioa_cfg:    ioa config struct
5774  * @ipr_cmd:    ipr command struct
5775  *
5776  * Return value:
5777  *      0 on success / -1 on failure
5778  **/
5779 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5780                            struct ipr_cmnd *ipr_cmd)
5781 {
5782         int i, nseg;
5783         struct scatterlist *sg;
5784         u32 length;
5785         u32 ioadl_flags = 0;
5786         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5787         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5788         struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5789
5790         length = scsi_bufflen(scsi_cmd);
5791         if (!length)
5792                 return 0;
5793
5794         nseg = scsi_dma_map(scsi_cmd);
5795         if (nseg < 0) {
5796                 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5797                 return -1;
5798         }
5799
5800         ipr_cmd->dma_use_sg = nseg;
5801
5802         if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5803                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5804                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5805                 ioarcb->data_transfer_length = cpu_to_be32(length);
5806                 ioarcb->ioadl_len =
5807                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5808         } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5809                 ioadl_flags = IPR_IOADL_FLAGS_READ;
5810                 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5811                 ioarcb->read_ioadl_len =
5812                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5813         }
5814
5815         if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5816                 ioadl = ioarcb->u.add_data.u.ioadl;
5817                 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5818                                     offsetof(struct ipr_ioarcb, u.add_data));
5819                 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5820         }
5821
5822         scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5823                 ioadl[i].flags_and_data_len =
5824                         cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5825                 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5826         }
5827
5828         ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5829         return 0;
5830 }
5831
5832 /**
5833  * ipr_erp_done - Process completion of ERP for a device
5834  * @ipr_cmd:            ipr command struct
5835  *
5836  * This function copies the sense buffer into the scsi_cmd
5837  * struct and pushes the scsi_done function.
5838  *
5839  * Return value:
5840  *      nothing
5841  **/
5842 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5843 {
5844         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5845         struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5846         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5847
5848         if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5849                 scsi_cmd->result |= (DID_ERROR << 16);
5850                 scmd_printk(KERN_ERR, scsi_cmd,
5851                             "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5852         } else {
5853                 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5854                        SCSI_SENSE_BUFFERSIZE);
5855         }
5856
5857         if (res) {
5858                 if (!ipr_is_naca_model(res))
5859                         res->needs_sync_complete = 1;
5860                 res->in_erp = 0;
5861         }
5862         scsi_dma_unmap(ipr_cmd->scsi_cmd);
5863         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5864         scsi_cmd->scsi_done(scsi_cmd);
5865 }
5866
5867 /**
5868  * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5869  * @ipr_cmd:    ipr command struct
5870  *
5871  * Return value:
5872  *      none
5873  **/
5874 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5875 {
5876         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5877         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5878         dma_addr_t dma_addr = ipr_cmd->dma_addr;
5879
5880         memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5881         ioarcb->data_transfer_length = 0;
5882         ioarcb->read_data_transfer_length = 0;
5883         ioarcb->ioadl_len = 0;
5884         ioarcb->read_ioadl_len = 0;
5885         ioasa->hdr.ioasc = 0;
5886         ioasa->hdr.residual_data_len = 0;
5887
5888         if (ipr_cmd->ioa_cfg->sis64)
5889                 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5890                         cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5891         else {
5892                 ioarcb->write_ioadl_addr =
5893                         cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5894                 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5895         }
5896 }
5897
5898 /**
5899  * ipr_erp_request_sense - Send request sense to a device
5900  * @ipr_cmd:    ipr command struct
5901  *
5902  * This function sends a request sense to a device as a result
5903  * of a check condition.
5904  *
5905  * Return value:
5906  *      nothing
5907  **/
5908 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5909 {
5910         struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5911         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5912
5913         if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5914                 ipr_erp_done(ipr_cmd);
5915                 return;
5916         }
5917
5918         ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5919
5920         cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5921         cmd_pkt->cdb[0] = REQUEST_SENSE;
5922         cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5923         cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5924         cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5925         cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5926
5927         ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5928                        SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5929
5930         ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5931                    IPR_REQUEST_SENSE_TIMEOUT * 2);
5932 }
5933
5934 /**
5935  * ipr_erp_cancel_all - Send cancel all to a device
5936  * @ipr_cmd:    ipr command struct
5937  *
5938  * This function sends a cancel all to a device to clear the
5939  * queue. If we are running TCQ on the device, QERR is set to 1,
5940  * which means all outstanding ops have been dropped on the floor.
5941  * Cancel all will return them to us.
5942  *
5943  * Return value:
5944  *      nothing
5945  **/
5946 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5947 {
5948         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5949         struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5950         struct ipr_cmd_pkt *cmd_pkt;
5951
5952         res->in_erp = 1;
5953
5954         ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5955
5956         if (!scsi_cmd->device->simple_tags) {
5957                 ipr_erp_request_sense(ipr_cmd);
5958                 return;
5959         }
5960
5961         cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5962         cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5963         cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5964
5965         ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5966                    IPR_CANCEL_ALL_TIMEOUT);
5967 }
5968
5969 /**
5970  * ipr_dump_ioasa - Dump contents of IOASA
5971  * @ioa_cfg:    ioa config struct
5972  * @ipr_cmd:    ipr command struct
5973  * @res:                resource entry struct
5974  *
5975  * This function is invoked by the interrupt handler when ops
5976  * fail. It will log the IOASA if appropriate. Only called
5977  * for GPDD ops.
5978  *
5979  * Return value:
5980  *      none
5981  **/
5982 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5983                            struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5984 {
5985         int i;
5986         u16 data_len;
5987         u32 ioasc, fd_ioasc;
5988         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5989         __be32 *ioasa_data = (__be32 *)ioasa;
5990         int error_index;
5991
5992         ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5993         fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5994
5995         if (0 == ioasc)
5996                 return;
5997
5998         if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5999                 return;
6000
6001         if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
6002                 error_index = ipr_get_error(fd_ioasc);
6003         else
6004                 error_index = ipr_get_error(ioasc);
6005
6006         if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
6007                 /* Don't log an error if the IOA already logged one */
6008                 if (ioasa->hdr.ilid != 0)
6009                         return;
6010
6011                 if (!ipr_is_gscsi(res))
6012                         return;
6013
6014                 if (ipr_error_table[error_index].log_ioasa == 0)
6015                         return;
6016         }
6017
6018         ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
6019
6020         data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
6021         if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
6022                 data_len = sizeof(struct ipr_ioasa64);
6023         else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
6024                 data_len = sizeof(struct ipr_ioasa);
6025
6026         ipr_err("IOASA Dump:\n");
6027
6028         for (i = 0; i < data_len / 4; i += 4) {
6029                 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
6030                         be32_to_cpu(ioasa_data[i]),
6031                         be32_to_cpu(ioasa_data[i+1]),
6032                         be32_to_cpu(ioasa_data[i+2]),
6033                         be32_to_cpu(ioasa_data[i+3]));
6034         }
6035 }
6036
6037 /**
6038  * ipr_gen_sense - Generate SCSI sense data from an IOASA
6039  * @ioasa:              IOASA
6040  * @sense_buf:  sense data buffer
6041  *
6042  * Return value:
6043  *      none
6044  **/
6045 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
6046 {
6047         u32 failing_lba;
6048         u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
6049         struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
6050         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6051         u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
6052
6053         memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
6054
6055         if (ioasc >= IPR_FIRST_DRIVER_IOASC)
6056                 return;
6057
6058         ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
6059
6060         if (ipr_is_vset_device(res) &&
6061             ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
6062             ioasa->u.vset.failing_lba_hi != 0) {
6063                 sense_buf[0] = 0x72;
6064                 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
6065                 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
6066                 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
6067
6068                 sense_buf[7] = 12;
6069                 sense_buf[8] = 0;
6070                 sense_buf[9] = 0x0A;
6071                 sense_buf[10] = 0x80;
6072
6073                 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
6074
6075                 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
6076                 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
6077                 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
6078                 sense_buf[15] = failing_lba & 0x000000ff;
6079
6080                 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6081
6082                 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
6083                 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
6084                 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
6085                 sense_buf[19] = failing_lba & 0x000000ff;
6086         } else {
6087                 sense_buf[0] = 0x70;
6088                 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
6089                 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
6090                 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
6091
6092                 /* Illegal request */
6093                 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
6094                     (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
6095                         sense_buf[7] = 10;      /* additional length */
6096
6097                         /* IOARCB was in error */
6098                         if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
6099                                 sense_buf[15] = 0xC0;
6100                         else    /* Parameter data was invalid */
6101                                 sense_buf[15] = 0x80;
6102
6103                         sense_buf[16] =
6104                             ((IPR_FIELD_POINTER_MASK &
6105                               be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
6106                         sense_buf[17] =
6107                             (IPR_FIELD_POINTER_MASK &
6108                              be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
6109                 } else {
6110                         if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
6111                                 if (ipr_is_vset_device(res))
6112                                         failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6113                                 else
6114                                         failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
6115
6116                                 sense_buf[0] |= 0x80;   /* Or in the Valid bit */
6117                                 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
6118                                 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
6119                                 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
6120                                 sense_buf[6] = failing_lba & 0x000000ff;
6121                         }
6122
6123                         sense_buf[7] = 6;       /* additional length */
6124                 }
6125         }
6126 }
6127
6128 /**
6129  * ipr_get_autosense - Copy autosense data to sense buffer
6130  * @ipr_cmd:    ipr command struct
6131  *
6132  * This function copies the autosense buffer to the buffer
6133  * in the scsi_cmd, if there is autosense available.
6134  *
6135  * Return value:
6136  *      1 if autosense was available / 0 if not
6137  **/
6138 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6139 {
6140         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6141         struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6142
6143         if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6144                 return 0;
6145
6146         if (ipr_cmd->ioa_cfg->sis64)
6147                 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6148                        min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6149                            SCSI_SENSE_BUFFERSIZE));
6150         else
6151                 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6152                        min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6153                            SCSI_SENSE_BUFFERSIZE));
6154         return 1;
6155 }
6156
6157 /**
6158  * ipr_erp_start - Process an error response for a SCSI op
6159  * @ioa_cfg:    ioa config struct
6160  * @ipr_cmd:    ipr command struct
6161  *
6162  * This function determines whether or not to initiate ERP
6163  * on the affected device.
6164  *
6165  * Return value:
6166  *      nothing
6167  **/
6168 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6169                               struct ipr_cmnd *ipr_cmd)
6170 {
6171         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6172         struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6173         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6174         u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6175
6176         if (!res) {
6177                 ipr_scsi_eh_done(ipr_cmd);
6178                 return;
6179         }
6180
6181         if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6182                 ipr_gen_sense(ipr_cmd);
6183
6184         ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6185
6186         switch (masked_ioasc) {
6187         case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6188                 if (ipr_is_naca_model(res))
6189                         scsi_cmd->result |= (DID_ABORT << 16);
6190                 else
6191                         scsi_cmd->result |= (DID_IMM_RETRY << 16);
6192                 break;
6193         case IPR_IOASC_IR_RESOURCE_HANDLE:
6194         case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6195                 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6196                 break;
6197         case IPR_IOASC_HW_SEL_TIMEOUT:
6198                 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6199                 if (!ipr_is_naca_model(res))
6200                         res->needs_sync_complete = 1;
6201                 break;
6202         case IPR_IOASC_SYNC_REQUIRED:
6203                 if (!res->in_erp)
6204                         res->needs_sync_complete = 1;
6205                 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6206                 break;
6207         case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6208         case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6209                 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6210                 break;
6211         case IPR_IOASC_BUS_WAS_RESET:
6212         case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6213                 /*
6214                  * Report the bus reset and ask for a retry. The device
6215                  * will give CC/UA the next command.
6216                  */
6217                 if (!res->resetting_device)
6218                         scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6219                 scsi_cmd->result |= (DID_ERROR << 16);
6220                 if (!ipr_is_naca_model(res))
6221                         res->needs_sync_complete = 1;
6222                 break;
6223         case IPR_IOASC_HW_DEV_BUS_STATUS:
6224                 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6225                 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6226                         if (!ipr_get_autosense(ipr_cmd)) {
6227                                 if (!ipr_is_naca_model(res)) {
6228                                         ipr_erp_cancel_all(ipr_cmd);
6229                                         return;
6230                                 }
6231                         }
6232                 }
6233                 if (!ipr_is_naca_model(res))
6234                         res->needs_sync_complete = 1;
6235                 break;
6236         case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6237                 break;
6238         case IPR_IOASC_IR_NON_OPTIMIZED:
6239                 if (res->raw_mode) {
6240                         res->raw_mode = 0;
6241                         scsi_cmd->result |= (DID_IMM_RETRY << 16);
6242                 } else
6243                         scsi_cmd->result |= (DID_ERROR << 16);
6244                 break;
6245         default:
6246                 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6247                         scsi_cmd->result |= (DID_ERROR << 16);
6248                 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6249                         res->needs_sync_complete = 1;
6250                 break;
6251         }
6252
6253         scsi_dma_unmap(ipr_cmd->scsi_cmd);
6254         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6255         scsi_cmd->scsi_done(scsi_cmd);
6256 }
6257
6258 /**
6259  * ipr_scsi_done - mid-layer done function
6260  * @ipr_cmd:    ipr command struct
6261  *
6262  * This function is invoked by the interrupt handler for
6263  * ops generated by the SCSI mid-layer
6264  *
6265  * Return value:
6266  *      none
6267  **/
6268 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6269 {
6270         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6271         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6272         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6273         unsigned long lock_flags;
6274
6275         scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6276
6277         if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6278                 scsi_dma_unmap(scsi_cmd);
6279
6280                 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
6281                 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6282                 scsi_cmd->scsi_done(scsi_cmd);
6283                 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
6284         } else {
6285                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6286                 spin_lock(&ipr_cmd->hrrq->_lock);
6287                 ipr_erp_start(ioa_cfg, ipr_cmd);
6288                 spin_unlock(&ipr_cmd->hrrq->_lock);
6289                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6290         }
6291 }
6292
6293 /**
6294  * ipr_queuecommand - Queue a mid-layer request
6295  * @shost:              scsi host struct
6296  * @scsi_cmd:   scsi command struct
6297  *
6298  * This function queues a request generated by the mid-layer.
6299  *
6300  * Return value:
6301  *      0 on success
6302  *      SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6303  *      SCSI_MLQUEUE_HOST_BUSY if host is busy
6304  **/
6305 static int ipr_queuecommand(struct Scsi_Host *shost,
6306                             struct scsi_cmnd *scsi_cmd)
6307 {
6308         struct ipr_ioa_cfg *ioa_cfg;
6309         struct ipr_resource_entry *res;
6310         struct ipr_ioarcb *ioarcb;
6311         struct ipr_cmnd *ipr_cmd;
6312         unsigned long hrrq_flags, lock_flags;
6313         int rc;
6314         struct ipr_hrr_queue *hrrq;
6315         int hrrq_id;
6316
6317         ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6318
6319         scsi_cmd->result = (DID_OK << 16);
6320         res = scsi_cmd->device->hostdata;
6321
6322         if (ipr_is_gata(res) && res->sata_port) {
6323                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6324                 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6325                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6326                 return rc;
6327         }
6328
6329         hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6330         hrrq = &ioa_cfg->hrrq[hrrq_id];
6331
6332         spin_lock_irqsave(hrrq->lock, hrrq_flags);
6333         /*
6334          * We are currently blocking all devices due to a host reset
6335          * We have told the host to stop giving us new requests, but
6336          * ERP ops don't count. FIXME
6337          */
6338         if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6339                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6340                 return SCSI_MLQUEUE_HOST_BUSY;
6341         }
6342
6343         /*
6344          * FIXME - Create scsi_set_host_offline interface
6345          *  and the ioa_is_dead check can be removed
6346          */
6347         if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6348                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6349                 goto err_nodev;
6350         }
6351
6352         ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6353         if (ipr_cmd == NULL) {
6354                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6355                 return SCSI_MLQUEUE_HOST_BUSY;
6356         }
6357         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6358
6359         ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6360         ioarcb = &ipr_cmd->ioarcb;
6361
6362         memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6363         ipr_cmd->scsi_cmd = scsi_cmd;
6364         ipr_cmd->done = ipr_scsi_eh_done;
6365
6366         if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6367                 if (scsi_cmd->underflow == 0)
6368                         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6369
6370                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6371                 if (ipr_is_gscsi(res) && res->reset_occurred) {
6372                         res->reset_occurred = 0;
6373                         ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6374                 }
6375                 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6376                 if (scsi_cmd->flags & SCMD_TAGGED)
6377                         ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
6378                 else
6379                         ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
6380         }
6381
6382         if (scsi_cmd->cmnd[0] >= 0xC0 &&
6383             (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6384                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6385         }
6386         if (res->raw_mode && ipr_is_af_dasd_device(res)) {
6387                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
6388
6389                 if (scsi_cmd->underflow == 0)
6390                         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6391         }
6392
6393         if (ioa_cfg->sis64)
6394                 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6395         else
6396                 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6397
6398         spin_lock_irqsave(hrrq->lock, hrrq_flags);
6399         if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6400                 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6401                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6402                 if (!rc)
6403                         scsi_dma_unmap(scsi_cmd);
6404                 return SCSI_MLQUEUE_HOST_BUSY;
6405         }
6406
6407         if (unlikely(hrrq->ioa_is_dead)) {
6408                 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6409                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6410                 scsi_dma_unmap(scsi_cmd);
6411                 goto err_nodev;
6412         }
6413
6414         ioarcb->res_handle = res->res_handle;
6415         if (res->needs_sync_complete) {
6416                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6417                 res->needs_sync_complete = 0;
6418         }
6419         list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6420         ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6421         ipr_send_command(ipr_cmd);
6422         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6423         return 0;
6424
6425 err_nodev:
6426         spin_lock_irqsave(hrrq->lock, hrrq_flags);
6427         memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6428         scsi_cmd->result = (DID_NO_CONNECT << 16);
6429         scsi_cmd->scsi_done(scsi_cmd);
6430         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6431         return 0;
6432 }
6433
6434 /**
6435  * ipr_ioctl - IOCTL handler
6436  * @sdev:       scsi device struct
6437  * @cmd:        IOCTL cmd
6438  * @arg:        IOCTL arg
6439  *
6440  * Return value:
6441  *      0 on success / other on failure
6442  **/
6443 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6444 {
6445         struct ipr_resource_entry *res;
6446
6447         res = (struct ipr_resource_entry *)sdev->hostdata;
6448         if (res && ipr_is_gata(res)) {
6449                 if (cmd == HDIO_GET_IDENTITY)
6450                         return -ENOTTY;
6451                 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6452         }
6453
6454         return -EINVAL;
6455 }
6456
6457 /**
6458  * ipr_info - Get information about the card/driver
6459  * @scsi_host:  scsi host struct
6460  *
6461  * Return value:
6462  *      pointer to buffer with description string
6463  **/
6464 static const char *ipr_ioa_info(struct Scsi_Host *host)
6465 {
6466         static char buffer[512];
6467         struct ipr_ioa_cfg *ioa_cfg;
6468         unsigned long lock_flags = 0;
6469
6470         ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6471
6472         spin_lock_irqsave(host->host_lock, lock_flags);
6473         sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6474         spin_unlock_irqrestore(host->host_lock, lock_flags);
6475
6476         return buffer;
6477 }
6478
6479 static struct scsi_host_template driver_template = {
6480         .module = THIS_MODULE,
6481         .name = "IPR",
6482         .info = ipr_ioa_info,
6483         .ioctl = ipr_ioctl,
6484         .queuecommand = ipr_queuecommand,
6485         .eh_abort_handler = ipr_eh_abort,
6486         .eh_device_reset_handler = ipr_eh_dev_reset,
6487         .eh_host_reset_handler = ipr_eh_host_reset,
6488         .slave_alloc = ipr_slave_alloc,
6489         .slave_configure = ipr_slave_configure,
6490         .slave_destroy = ipr_slave_destroy,
6491         .scan_finished = ipr_scan_finished,
6492         .target_alloc = ipr_target_alloc,
6493         .target_destroy = ipr_target_destroy,
6494         .change_queue_depth = ipr_change_queue_depth,
6495         .bios_param = ipr_biosparam,
6496         .can_queue = IPR_MAX_COMMANDS,
6497         .this_id = -1,
6498         .sg_tablesize = IPR_MAX_SGLIST,
6499         .max_sectors = IPR_IOA_MAX_SECTORS,
6500         .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6501         .use_clustering = ENABLE_CLUSTERING,
6502         .shost_attrs = ipr_ioa_attrs,
6503         .sdev_attrs = ipr_dev_attrs,
6504         .proc_name = IPR_NAME,
6505         .use_blk_tags = 1,
6506 };
6507
6508 /**
6509  * ipr_ata_phy_reset - libata phy_reset handler
6510  * @ap:         ata port to reset
6511  *
6512  **/
6513 static void ipr_ata_phy_reset(struct ata_port *ap)
6514 {
6515         unsigned long flags;
6516         struct ipr_sata_port *sata_port = ap->private_data;
6517         struct ipr_resource_entry *res = sata_port->res;
6518         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6519         int rc;
6520
6521         ENTER;
6522         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6523         while (ioa_cfg->in_reset_reload) {
6524                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6525                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6526                 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6527         }
6528
6529         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6530                 goto out_unlock;
6531
6532         rc = ipr_device_reset(ioa_cfg, res);
6533
6534         if (rc) {
6535                 ap->link.device[0].class = ATA_DEV_NONE;
6536                 goto out_unlock;
6537         }
6538
6539         ap->link.device[0].class = res->ata_class;
6540         if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6541                 ap->link.device[0].class = ATA_DEV_NONE;
6542
6543 out_unlock:
6544         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6545         LEAVE;
6546 }
6547
6548 /**
6549  * ipr_ata_post_internal - Cleanup after an internal command
6550  * @qc: ATA queued command
6551  *
6552  * Return value:
6553  *      none
6554  **/
6555 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6556 {
6557         struct ipr_sata_port *sata_port = qc->ap->private_data;
6558         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6559         struct ipr_cmnd *ipr_cmd;
6560         struct ipr_hrr_queue *hrrq;
6561         unsigned long flags;
6562
6563         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6564         while (ioa_cfg->in_reset_reload) {
6565                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6566                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6567                 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6568         }
6569
6570         for_each_hrrq(hrrq, ioa_cfg) {
6571                 spin_lock(&hrrq->_lock);
6572                 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6573                         if (ipr_cmd->qc == qc) {
6574                                 ipr_device_reset(ioa_cfg, sata_port->res);
6575                                 break;
6576                         }
6577                 }
6578                 spin_unlock(&hrrq->_lock);
6579         }
6580         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6581 }
6582
6583 /**
6584  * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6585  * @regs:       destination
6586  * @tf: source ATA taskfile
6587  *
6588  * Return value:
6589  *      none
6590  **/
6591 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6592                              struct ata_taskfile *tf)
6593 {
6594         regs->feature = tf->feature;
6595         regs->nsect = tf->nsect;
6596         regs->lbal = tf->lbal;
6597         regs->lbam = tf->lbam;
6598         regs->lbah = tf->lbah;
6599         regs->device = tf->device;
6600         regs->command = tf->command;
6601         regs->hob_feature = tf->hob_feature;
6602         regs->hob_nsect = tf->hob_nsect;
6603         regs->hob_lbal = tf->hob_lbal;
6604         regs->hob_lbam = tf->hob_lbam;
6605         regs->hob_lbah = tf->hob_lbah;
6606         regs->ctl = tf->ctl;
6607 }
6608
6609 /**
6610  * ipr_sata_done - done function for SATA commands
6611  * @ipr_cmd:    ipr command struct
6612  *
6613  * This function is invoked by the interrupt handler for
6614  * ops generated by the SCSI mid-layer to SATA devices
6615  *
6616  * Return value:
6617  *      none
6618  **/
6619 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6620 {
6621         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6622         struct ata_queued_cmd *qc = ipr_cmd->qc;
6623         struct ipr_sata_port *sata_port = qc->ap->private_data;
6624         struct ipr_resource_entry *res = sata_port->res;
6625         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6626
6627         spin_lock(&ipr_cmd->hrrq->_lock);
6628         if (ipr_cmd->ioa_cfg->sis64)
6629                 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6630                        sizeof(struct ipr_ioasa_gata));
6631         else
6632                 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6633                        sizeof(struct ipr_ioasa_gata));
6634         ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6635
6636         if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6637                 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6638
6639         if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6640                 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6641         else
6642                 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6643         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6644         spin_unlock(&ipr_cmd->hrrq->_lock);
6645         ata_qc_complete(qc);
6646 }
6647
6648 /**
6649  * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6650  * @ipr_cmd:    ipr command struct
6651  * @qc:         ATA queued command
6652  *
6653  **/
6654 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6655                                   struct ata_queued_cmd *qc)
6656 {
6657         u32 ioadl_flags = 0;
6658         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6659         struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6660         struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6661         int len = qc->nbytes;
6662         struct scatterlist *sg;
6663         unsigned int si;
6664         dma_addr_t dma_addr = ipr_cmd->dma_addr;
6665
6666         if (len == 0)
6667                 return;
6668
6669         if (qc->dma_dir == DMA_TO_DEVICE) {
6670                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6671                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6672         } else if (qc->dma_dir == DMA_FROM_DEVICE)
6673                 ioadl_flags = IPR_IOADL_FLAGS_READ;
6674
6675         ioarcb->data_transfer_length = cpu_to_be32(len);
6676         ioarcb->ioadl_len =
6677                 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6678         ioarcb->u.sis64_addr_data.data_ioadl_addr =
6679                 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6680
6681         for_each_sg(qc->sg, sg, qc->n_elem, si) {
6682                 ioadl64->flags = cpu_to_be32(ioadl_flags);
6683                 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6684                 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6685
6686                 last_ioadl64 = ioadl64;
6687                 ioadl64++;
6688         }
6689
6690         if (likely(last_ioadl64))
6691                 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6692 }
6693
6694 /**
6695  * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6696  * @ipr_cmd:    ipr command struct
6697  * @qc:         ATA queued command
6698  *
6699  **/
6700 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6701                                 struct ata_queued_cmd *qc)
6702 {
6703         u32 ioadl_flags = 0;
6704         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6705         struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6706         struct ipr_ioadl_desc *last_ioadl = NULL;
6707         int len = qc->nbytes;
6708         struct scatterlist *sg;
6709         unsigned int si;
6710
6711         if (len == 0)
6712                 return;
6713
6714         if (qc->dma_dir == DMA_TO_DEVICE) {
6715                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6716                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6717                 ioarcb->data_transfer_length = cpu_to_be32(len);
6718                 ioarcb->ioadl_len =
6719                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6720         } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6721                 ioadl_flags = IPR_IOADL_FLAGS_READ;
6722                 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6723                 ioarcb->read_ioadl_len =
6724                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6725         }
6726
6727         for_each_sg(qc->sg, sg, qc->n_elem, si) {
6728                 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6729                 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6730
6731                 last_ioadl = ioadl;
6732                 ioadl++;
6733         }
6734
6735         if (likely(last_ioadl))
6736                 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6737 }
6738
6739 /**
6740  * ipr_qc_defer - Get a free ipr_cmd
6741  * @qc: queued command
6742  *
6743  * Return value:
6744  *      0 if success
6745  **/
6746 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6747 {
6748         struct ata_port *ap = qc->ap;
6749         struct ipr_sata_port *sata_port = ap->private_data;
6750         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6751         struct ipr_cmnd *ipr_cmd;
6752         struct ipr_hrr_queue *hrrq;
6753         int hrrq_id;
6754
6755         hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6756         hrrq = &ioa_cfg->hrrq[hrrq_id];
6757
6758         qc->lldd_task = NULL;
6759         spin_lock(&hrrq->_lock);
6760         if (unlikely(hrrq->ioa_is_dead)) {
6761                 spin_unlock(&hrrq->_lock);
6762                 return 0;
6763         }
6764
6765         if (unlikely(!hrrq->allow_cmds)) {
6766                 spin_unlock(&hrrq->_lock);
6767                 return ATA_DEFER_LINK;
6768         }
6769
6770         ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6771         if (ipr_cmd == NULL) {
6772                 spin_unlock(&hrrq->_lock);
6773                 return ATA_DEFER_LINK;
6774         }
6775
6776         qc->lldd_task = ipr_cmd;
6777         spin_unlock(&hrrq->_lock);
6778         return 0;
6779 }
6780
6781 /**
6782  * ipr_qc_issue - Issue a SATA qc to a device
6783  * @qc: queued command
6784  *
6785  * Return value:
6786  *      0 if success
6787  **/
6788 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6789 {
6790         struct ata_port *ap = qc->ap;
6791         struct ipr_sata_port *sata_port = ap->private_data;
6792         struct ipr_resource_entry *res = sata_port->res;
6793         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6794         struct ipr_cmnd *ipr_cmd;
6795         struct ipr_ioarcb *ioarcb;
6796         struct ipr_ioarcb_ata_regs *regs;
6797
6798         if (qc->lldd_task == NULL)
6799                 ipr_qc_defer(qc);
6800
6801         ipr_cmd = qc->lldd_task;
6802         if (ipr_cmd == NULL)
6803                 return AC_ERR_SYSTEM;
6804
6805         qc->lldd_task = NULL;
6806         spin_lock(&ipr_cmd->hrrq->_lock);
6807         if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
6808                         ipr_cmd->hrrq->ioa_is_dead)) {
6809                 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6810                 spin_unlock(&ipr_cmd->hrrq->_lock);
6811                 return AC_ERR_SYSTEM;
6812         }
6813
6814         ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
6815         ioarcb = &ipr_cmd->ioarcb;
6816
6817         if (ioa_cfg->sis64) {
6818                 regs = &ipr_cmd->i.ata_ioadl.regs;
6819                 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6820         } else
6821                 regs = &ioarcb->u.add_data.u.regs;
6822
6823         memset(regs, 0, sizeof(*regs));
6824         ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6825
6826         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
6827         ipr_cmd->qc = qc;
6828         ipr_cmd->done = ipr_sata_done;
6829         ipr_cmd->ioarcb.res_handle = res->res_handle;
6830         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6831         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6832         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6833         ipr_cmd->dma_use_sg = qc->n_elem;
6834
6835         if (ioa_cfg->sis64)
6836                 ipr_build_ata_ioadl64(ipr_cmd, qc);
6837         else
6838                 ipr_build_ata_ioadl(ipr_cmd, qc);
6839
6840         regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6841         ipr_copy_sata_tf(regs, &qc->tf);
6842         memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6843         ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6844
6845         switch (qc->tf.protocol) {
6846         case ATA_PROT_NODATA:
6847         case ATA_PROT_PIO:
6848                 break;
6849
6850         case ATA_PROT_DMA:
6851                 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6852                 break;
6853
6854         case ATAPI_PROT_PIO:
6855         case ATAPI_PROT_NODATA:
6856                 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6857                 break;
6858
6859         case ATAPI_PROT_DMA:
6860                 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6861                 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6862                 break;
6863
6864         default:
6865                 WARN_ON(1);
6866                 spin_unlock(&ipr_cmd->hrrq->_lock);
6867                 return AC_ERR_INVALID;
6868         }
6869
6870         ipr_send_command(ipr_cmd);
6871         spin_unlock(&ipr_cmd->hrrq->_lock);
6872
6873         return 0;
6874 }
6875
6876 /**
6877  * ipr_qc_fill_rtf - Read result TF
6878  * @qc: ATA queued command
6879  *
6880  * Return value:
6881  *      true
6882  **/
6883 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6884 {
6885         struct ipr_sata_port *sata_port = qc->ap->private_data;
6886         struct ipr_ioasa_gata *g = &sata_port->ioasa;
6887         struct ata_taskfile *tf = &qc->result_tf;
6888
6889         tf->feature = g->error;
6890         tf->nsect = g->nsect;
6891         tf->lbal = g->lbal;
6892         tf->lbam = g->lbam;
6893         tf->lbah = g->lbah;
6894         tf->device = g->device;
6895         tf->command = g->status;
6896         tf->hob_nsect = g->hob_nsect;
6897         tf->hob_lbal = g->hob_lbal;
6898         tf->hob_lbam = g->hob_lbam;
6899         tf->hob_lbah = g->hob_lbah;
6900
6901         return true;
6902 }
6903
6904 static struct ata_port_operations ipr_sata_ops = {
6905         .phy_reset = ipr_ata_phy_reset,
6906         .hardreset = ipr_sata_reset,
6907         .post_internal_cmd = ipr_ata_post_internal,
6908         .qc_prep = ata_noop_qc_prep,
6909         .qc_defer = ipr_qc_defer,
6910         .qc_issue = ipr_qc_issue,
6911         .qc_fill_rtf = ipr_qc_fill_rtf,
6912         .port_start = ata_sas_port_start,
6913         .port_stop = ata_sas_port_stop
6914 };
6915
6916 static struct ata_port_info sata_port_info = {
6917         .flags          = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
6918                           ATA_FLAG_SAS_HOST,
6919         .pio_mask       = ATA_PIO4_ONLY,
6920         .mwdma_mask     = ATA_MWDMA2,
6921         .udma_mask      = ATA_UDMA6,
6922         .port_ops       = &ipr_sata_ops
6923 };
6924
6925 #ifdef CONFIG_PPC_PSERIES
6926 static const u16 ipr_blocked_processors[] = {
6927         PVR_NORTHSTAR,
6928         PVR_PULSAR,
6929         PVR_POWER4,
6930         PVR_ICESTAR,
6931         PVR_SSTAR,
6932         PVR_POWER4p,
6933         PVR_630,
6934         PVR_630p
6935 };
6936
6937 /**
6938  * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6939  * @ioa_cfg:    ioa cfg struct
6940  *
6941  * Adapters that use Gemstone revision < 3.1 do not work reliably on
6942  * certain pSeries hardware. This function determines if the given
6943  * adapter is in one of these confgurations or not.
6944  *
6945  * Return value:
6946  *      1 if adapter is not supported / 0 if adapter is supported
6947  **/
6948 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6949 {
6950         int i;
6951
6952         if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6953                 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
6954                         if (pvr_version_is(ipr_blocked_processors[i]))
6955                                 return 1;
6956                 }
6957         }
6958         return 0;
6959 }
6960 #else
6961 #define ipr_invalid_adapter(ioa_cfg) 0
6962 #endif
6963
6964 /**
6965  * ipr_ioa_bringdown_done - IOA bring down completion.
6966  * @ipr_cmd:    ipr command struct
6967  *
6968  * This function processes the completion of an adapter bring down.
6969  * It wakes any reset sleepers.
6970  *
6971  * Return value:
6972  *      IPR_RC_JOB_RETURN
6973  **/
6974 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6975 {
6976         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6977         int i;
6978
6979         ENTER;
6980         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
6981                 ipr_trace;
6982                 spin_unlock_irq(ioa_cfg->host->host_lock);
6983                 scsi_unblock_requests(ioa_cfg->host);
6984                 spin_lock_irq(ioa_cfg->host->host_lock);
6985         }
6986
6987         ioa_cfg->in_reset_reload = 0;
6988         ioa_cfg->reset_retries = 0;
6989         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
6990                 spin_lock(&ioa_cfg->hrrq[i]._lock);
6991                 ioa_cfg->hrrq[i].ioa_is_dead = 1;
6992                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
6993         }
6994         wmb();
6995
6996         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6997         wake_up_all(&ioa_cfg->reset_wait_q);
6998         LEAVE;
6999
7000         return IPR_RC_JOB_RETURN;
7001 }
7002
7003 /**
7004  * ipr_ioa_reset_done - IOA reset completion.
7005  * @ipr_cmd:    ipr command struct
7006  *
7007  * This function processes the completion of an adapter reset.
7008  * It schedules any necessary mid-layer add/removes and
7009  * wakes any reset sleepers.
7010  *
7011  * Return value:
7012  *      IPR_RC_JOB_RETURN
7013  **/
7014 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
7015 {
7016         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7017         struct ipr_resource_entry *res;
7018         struct ipr_hostrcb *hostrcb, *temp;
7019         int i = 0, j;
7020
7021         ENTER;
7022         ioa_cfg->in_reset_reload = 0;
7023         for (j = 0; j < ioa_cfg->hrrq_num; j++) {
7024                 spin_lock(&ioa_cfg->hrrq[j]._lock);
7025                 ioa_cfg->hrrq[j].allow_cmds = 1;
7026                 spin_unlock(&ioa_cfg->hrrq[j]._lock);
7027         }
7028         wmb();
7029         ioa_cfg->reset_cmd = NULL;
7030         ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7031
7032         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
7033                 if (res->add_to_ml || res->del_from_ml) {
7034                         ipr_trace;
7035                         break;
7036                 }
7037         }
7038         schedule_work(&ioa_cfg->work_q);
7039
7040         list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
7041                 list_del(&hostrcb->queue);
7042                 if (i++ < IPR_NUM_LOG_HCAMS)
7043                         ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
7044                 else
7045                         ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
7046         }
7047
7048         scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
7049         dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
7050
7051         ioa_cfg->reset_retries = 0;
7052         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7053         wake_up_all(&ioa_cfg->reset_wait_q);
7054
7055         spin_unlock(ioa_cfg->host->host_lock);
7056         scsi_unblock_requests(ioa_cfg->host);
7057         spin_lock(ioa_cfg->host->host_lock);
7058
7059         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
7060                 scsi_block_requests(ioa_cfg->host);
7061
7062         schedule_work(&ioa_cfg->work_q);
7063         LEAVE;
7064         return IPR_RC_JOB_RETURN;
7065 }
7066
7067 /**
7068  * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
7069  * @supported_dev:      supported device struct
7070  * @vpids:                      vendor product id struct
7071  *
7072  * Return value:
7073  *      none
7074  **/
7075 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
7076                                  struct ipr_std_inq_vpids *vpids)
7077 {
7078         memset(supported_dev, 0, sizeof(struct ipr_supported_device));
7079         memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
7080         supported_dev->num_records = 1;
7081         supported_dev->data_length =
7082                 cpu_to_be16(sizeof(struct ipr_supported_device));
7083         supported_dev->reserved = 0;
7084 }
7085
7086 /**
7087  * ipr_set_supported_devs - Send Set Supported Devices for a device
7088  * @ipr_cmd:    ipr command struct
7089  *
7090  * This function sends a Set Supported Devices to the adapter
7091  *
7092  * Return value:
7093  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7094  **/
7095 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
7096 {
7097         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7098         struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
7099         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7100         struct ipr_resource_entry *res = ipr_cmd->u.res;
7101
7102         ipr_cmd->job_step = ipr_ioa_reset_done;
7103
7104         list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
7105                 if (!ipr_is_scsi_disk(res))
7106                         continue;
7107
7108                 ipr_cmd->u.res = res;
7109                 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
7110
7111                 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7112                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7113                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7114
7115                 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
7116                 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
7117                 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
7118                 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
7119
7120                 ipr_init_ioadl(ipr_cmd,
7121                                ioa_cfg->vpd_cbs_dma +
7122                                  offsetof(struct ipr_misc_cbs, supp_dev),
7123                                sizeof(struct ipr_supported_device),
7124                                IPR_IOADL_FLAGS_WRITE_LAST);
7125
7126                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7127                            IPR_SET_SUP_DEVICE_TIMEOUT);
7128
7129                 if (!ioa_cfg->sis64)
7130                         ipr_cmd->job_step = ipr_set_supported_devs;
7131                 LEAVE;
7132                 return IPR_RC_JOB_RETURN;
7133         }
7134
7135         LEAVE;
7136         return IPR_RC_JOB_CONTINUE;
7137 }
7138
7139 /**
7140  * ipr_get_mode_page - Locate specified mode page
7141  * @mode_pages: mode page buffer
7142  * @page_code:  page code to find
7143  * @len:                minimum required length for mode page
7144  *
7145  * Return value:
7146  *      pointer to mode page / NULL on failure
7147  **/
7148 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
7149                                u32 page_code, u32 len)
7150 {
7151         struct ipr_mode_page_hdr *mode_hdr;
7152         u32 page_length;
7153         u32 length;
7154
7155         if (!mode_pages || (mode_pages->hdr.length == 0))
7156                 return NULL;
7157
7158         length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7159         mode_hdr = (struct ipr_mode_page_hdr *)
7160                 (mode_pages->data + mode_pages->hdr.block_desc_len);
7161
7162         while (length) {
7163                 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7164                         if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7165                                 return mode_hdr;
7166                         break;
7167                 } else {
7168                         page_length = (sizeof(struct ipr_mode_page_hdr) +
7169                                        mode_hdr->page_length);
7170                         length -= page_length;
7171                         mode_hdr = (struct ipr_mode_page_hdr *)
7172                                 ((unsigned long)mode_hdr + page_length);
7173                 }
7174         }
7175         return NULL;
7176 }
7177
7178 /**
7179  * ipr_check_term_power - Check for term power errors
7180  * @ioa_cfg:    ioa config struct
7181  * @mode_pages: IOAFP mode pages buffer
7182  *
7183  * Check the IOAFP's mode page 28 for term power errors
7184  *
7185  * Return value:
7186  *      nothing
7187  **/
7188 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7189                                  struct ipr_mode_pages *mode_pages)
7190 {
7191         int i;
7192         int entry_length;
7193         struct ipr_dev_bus_entry *bus;
7194         struct ipr_mode_page28 *mode_page;
7195
7196         mode_page = ipr_get_mode_page(mode_pages, 0x28,
7197                                       sizeof(struct ipr_mode_page28));
7198
7199         entry_length = mode_page->entry_length;
7200
7201         bus = mode_page->bus;
7202
7203         for (i = 0; i < mode_page->num_entries; i++) {
7204                 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7205                         dev_err(&ioa_cfg->pdev->dev,
7206                                 "Term power is absent on scsi bus %d\n",
7207                                 bus->res_addr.bus);
7208                 }
7209
7210                 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7211         }
7212 }
7213
7214 /**
7215  * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7216  * @ioa_cfg:    ioa config struct
7217  *
7218  * Looks through the config table checking for SES devices. If
7219  * the SES device is in the SES table indicating a maximum SCSI
7220  * bus speed, the speed is limited for the bus.
7221  *
7222  * Return value:
7223  *      none
7224  **/
7225 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7226 {
7227         u32 max_xfer_rate;
7228         int i;
7229
7230         for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7231                 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7232                                                        ioa_cfg->bus_attr[i].bus_width);
7233
7234                 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7235                         ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7236         }
7237 }
7238
7239 /**
7240  * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7241  * @ioa_cfg:    ioa config struct
7242  * @mode_pages: mode page 28 buffer
7243  *
7244  * Updates mode page 28 based on driver configuration
7245  *
7246  * Return value:
7247  *      none
7248  **/
7249 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7250                                           struct ipr_mode_pages *mode_pages)
7251 {
7252         int i, entry_length;
7253         struct ipr_dev_bus_entry *bus;
7254         struct ipr_bus_attributes *bus_attr;
7255         struct ipr_mode_page28 *mode_page;
7256
7257         mode_page = ipr_get_mode_page(mode_pages, 0x28,
7258                                       sizeof(struct ipr_mode_page28));
7259
7260         entry_length = mode_page->entry_length;
7261
7262         /* Loop for each device bus entry */
7263         for (i = 0, bus = mode_page->bus;
7264              i < mode_page->num_entries;
7265              i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7266                 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7267                         dev_err(&ioa_cfg->pdev->dev,
7268                                 "Invalid resource address reported: 0x%08X\n",
7269                                 IPR_GET_PHYS_LOC(bus->res_addr));
7270                         continue;
7271                 }
7272
7273                 bus_attr = &ioa_cfg->bus_attr[i];
7274                 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7275                 bus->bus_width = bus_attr->bus_width;
7276                 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7277                 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7278                 if (bus_attr->qas_enabled)
7279                         bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7280                 else
7281                         bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7282         }
7283 }
7284
7285 /**
7286  * ipr_build_mode_select - Build a mode select command
7287  * @ipr_cmd:    ipr command struct
7288  * @res_handle: resource handle to send command to
7289  * @parm:               Byte 2 of Mode Sense command
7290  * @dma_addr:   DMA buffer address
7291  * @xfer_len:   data transfer length
7292  *
7293  * Return value:
7294  *      none
7295  **/
7296 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7297                                   __be32 res_handle, u8 parm,
7298                                   dma_addr_t dma_addr, u8 xfer_len)
7299 {
7300         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7301
7302         ioarcb->res_handle = res_handle;
7303         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7304         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7305         ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7306         ioarcb->cmd_pkt.cdb[1] = parm;
7307         ioarcb->cmd_pkt.cdb[4] = xfer_len;
7308
7309         ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7310 }
7311
7312 /**
7313  * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7314  * @ipr_cmd:    ipr command struct
7315  *
7316  * This function sets up the SCSI bus attributes and sends
7317  * a Mode Select for Page 28 to activate them.
7318  *
7319  * Return value:
7320  *      IPR_RC_JOB_RETURN
7321  **/
7322 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7323 {
7324         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7325         struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7326         int length;
7327
7328         ENTER;
7329         ipr_scsi_bus_speed_limit(ioa_cfg);
7330         ipr_check_term_power(ioa_cfg, mode_pages);
7331         ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7332         length = mode_pages->hdr.length + 1;
7333         mode_pages->hdr.length = 0;
7334
7335         ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7336                               ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7337                               length);
7338
7339         ipr_cmd->job_step = ipr_set_supported_devs;
7340         ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7341                                     struct ipr_resource_entry, queue);
7342         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7343
7344         LEAVE;
7345         return IPR_RC_JOB_RETURN;
7346 }
7347
7348 /**
7349  * ipr_build_mode_sense - Builds a mode sense command
7350  * @ipr_cmd:    ipr command struct
7351  * @res:                resource entry struct
7352  * @parm:               Byte 2 of mode sense command
7353  * @dma_addr:   DMA address of mode sense buffer
7354  * @xfer_len:   Size of DMA buffer
7355  *
7356  * Return value:
7357  *      none
7358  **/
7359 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7360                                  __be32 res_handle,
7361                                  u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7362 {
7363         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7364
7365         ioarcb->res_handle = res_handle;
7366         ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7367         ioarcb->cmd_pkt.cdb[2] = parm;
7368         ioarcb->cmd_pkt.cdb[4] = xfer_len;
7369         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7370
7371         ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7372 }
7373
7374 /**
7375  * ipr_reset_cmd_failed - Handle failure of IOA reset command
7376  * @ipr_cmd:    ipr command struct
7377  *
7378  * This function handles the failure of an IOA bringup command.
7379  *
7380  * Return value:
7381  *      IPR_RC_JOB_RETURN
7382  **/
7383 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7384 {
7385         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7386         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7387
7388         dev_err(&ioa_cfg->pdev->dev,
7389                 "0x%02X failed with IOASC: 0x%08X\n",
7390                 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7391
7392         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7393         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7394         return IPR_RC_JOB_RETURN;
7395 }
7396
7397 /**
7398  * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7399  * @ipr_cmd:    ipr command struct
7400  *
7401  * This function handles the failure of a Mode Sense to the IOAFP.
7402  * Some adapters do not handle all mode pages.
7403  *
7404  * Return value:
7405  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7406  **/
7407 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7408 {
7409         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7410         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7411
7412         if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7413                 ipr_cmd->job_step = ipr_set_supported_devs;
7414                 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7415                                             struct ipr_resource_entry, queue);
7416                 return IPR_RC_JOB_CONTINUE;
7417         }
7418
7419         return ipr_reset_cmd_failed(ipr_cmd);
7420 }
7421
7422 /**
7423  * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7424  * @ipr_cmd:    ipr command struct
7425  *
7426  * This function send a Page 28 mode sense to the IOA to
7427  * retrieve SCSI bus attributes.
7428  *
7429  * Return value:
7430  *      IPR_RC_JOB_RETURN
7431  **/
7432 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7433 {
7434         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7435
7436         ENTER;
7437         ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7438                              0x28, ioa_cfg->vpd_cbs_dma +
7439                              offsetof(struct ipr_misc_cbs, mode_pages),
7440                              sizeof(struct ipr_mode_pages));
7441
7442         ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7443         ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7444
7445         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7446
7447         LEAVE;
7448         return IPR_RC_JOB_RETURN;
7449 }
7450
7451 /**
7452  * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7453  * @ipr_cmd:    ipr command struct
7454  *
7455  * This function enables dual IOA RAID support if possible.
7456  *
7457  * Return value:
7458  *      IPR_RC_JOB_RETURN
7459  **/
7460 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7461 {
7462         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7463         struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7464         struct ipr_mode_page24 *mode_page;
7465         int length;
7466
7467         ENTER;
7468         mode_page = ipr_get_mode_page(mode_pages, 0x24,
7469                                       sizeof(struct ipr_mode_page24));
7470
7471         if (mode_page)
7472                 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7473
7474         length = mode_pages->hdr.length + 1;
7475         mode_pages->hdr.length = 0;
7476
7477         ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7478                               ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7479                               length);
7480
7481         ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7482         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7483
7484         LEAVE;
7485         return IPR_RC_JOB_RETURN;
7486 }
7487
7488 /**
7489  * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7490  * @ipr_cmd:    ipr command struct
7491  *
7492  * This function handles the failure of a Mode Sense to the IOAFP.
7493  * Some adapters do not handle all mode pages.
7494  *
7495  * Return value:
7496  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7497  **/
7498 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7499 {
7500         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7501
7502         if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7503                 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7504                 return IPR_RC_JOB_CONTINUE;
7505         }
7506
7507         return ipr_reset_cmd_failed(ipr_cmd);
7508 }
7509
7510 /**
7511  * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7512  * @ipr_cmd:    ipr command struct
7513  *
7514  * This function send a mode sense to the IOA to retrieve
7515  * the IOA Advanced Function Control mode page.
7516  *
7517  * Return value:
7518  *      IPR_RC_JOB_RETURN
7519  **/
7520 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7521 {
7522         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7523
7524         ENTER;
7525         ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7526                              0x24, ioa_cfg->vpd_cbs_dma +
7527                              offsetof(struct ipr_misc_cbs, mode_pages),
7528                              sizeof(struct ipr_mode_pages));
7529
7530         ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7531         ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7532
7533         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7534
7535         LEAVE;
7536         return IPR_RC_JOB_RETURN;
7537 }
7538
7539 /**
7540  * ipr_init_res_table - Initialize the resource table
7541  * @ipr_cmd:    ipr command struct
7542  *
7543  * This function looks through the existing resource table, comparing
7544  * it with the config table. This function will take care of old/new
7545  * devices and schedule adding/removing them from the mid-layer
7546  * as appropriate.
7547  *
7548  * Return value:
7549  *      IPR_RC_JOB_CONTINUE
7550  **/
7551 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7552 {
7553         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7554         struct ipr_resource_entry *res, *temp;
7555         struct ipr_config_table_entry_wrapper cfgtew;
7556         int entries, found, flag, i;
7557         LIST_HEAD(old_res);
7558
7559         ENTER;
7560         if (ioa_cfg->sis64)
7561                 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7562         else
7563                 flag = ioa_cfg->u.cfg_table->hdr.flags;
7564
7565         if (flag & IPR_UCODE_DOWNLOAD_REQ)
7566                 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7567
7568         list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7569                 list_move_tail(&res->queue, &old_res);
7570
7571         if (ioa_cfg->sis64)
7572                 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7573         else
7574                 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7575
7576         for (i = 0; i < entries; i++) {
7577                 if (ioa_cfg->sis64)
7578                         cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7579                 else
7580                         cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7581                 found = 0;
7582
7583                 list_for_each_entry_safe(res, temp, &old_res, queue) {
7584                         if (ipr_is_same_device(res, &cfgtew)) {
7585                                 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7586                                 found = 1;
7587                                 break;
7588                         }
7589                 }
7590
7591                 if (!found) {
7592                         if (list_empty(&ioa_cfg->free_res_q)) {
7593                                 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7594                                 break;
7595                         }
7596
7597                         found = 1;
7598                         res = list_entry(ioa_cfg->free_res_q.next,
7599                                          struct ipr_resource_entry, queue);
7600                         list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7601                         ipr_init_res_entry(res, &cfgtew);
7602                         res->add_to_ml = 1;
7603                 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7604                         res->sdev->allow_restart = 1;
7605
7606                 if (found)
7607                         ipr_update_res_entry(res, &cfgtew);
7608         }
7609
7610         list_for_each_entry_safe(res, temp, &old_res, queue) {
7611                 if (res->sdev) {
7612                         res->del_from_ml = 1;
7613                         res->res_handle = IPR_INVALID_RES_HANDLE;
7614                         list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7615                 }
7616         }
7617
7618         list_for_each_entry_safe(res, temp, &old_res, queue) {
7619                 ipr_clear_res_target(res);
7620                 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7621         }
7622
7623         if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7624                 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7625         else
7626                 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7627
7628         LEAVE;
7629         return IPR_RC_JOB_CONTINUE;
7630 }
7631
7632 /**
7633  * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7634  * @ipr_cmd:    ipr command struct
7635  *
7636  * This function sends a Query IOA Configuration command
7637  * to the adapter to retrieve the IOA configuration table.
7638  *
7639  * Return value:
7640  *      IPR_RC_JOB_RETURN
7641  **/
7642 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7643 {
7644         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7645         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7646         struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7647         struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7648
7649         ENTER;
7650         if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7651                 ioa_cfg->dual_raid = 1;
7652         dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7653                  ucode_vpd->major_release, ucode_vpd->card_type,
7654                  ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7655         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7656         ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7657
7658         ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7659         ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7660         ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7661         ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7662
7663         ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7664                        IPR_IOADL_FLAGS_READ_LAST);
7665
7666         ipr_cmd->job_step = ipr_init_res_table;
7667
7668         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7669
7670         LEAVE;
7671         return IPR_RC_JOB_RETURN;
7672 }
7673
7674 /**
7675  * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7676  * @ipr_cmd:    ipr command struct
7677  *
7678  * This utility function sends an inquiry to the adapter.
7679  *
7680  * Return value:
7681  *      none
7682  **/
7683 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7684                               dma_addr_t dma_addr, u8 xfer_len)
7685 {
7686         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7687
7688         ENTER;
7689         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7690         ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7691
7692         ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7693         ioarcb->cmd_pkt.cdb[1] = flags;
7694         ioarcb->cmd_pkt.cdb[2] = page;
7695         ioarcb->cmd_pkt.cdb[4] = xfer_len;
7696
7697         ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7698
7699         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7700         LEAVE;
7701 }
7702
7703 /**
7704  * ipr_inquiry_page_supported - Is the given inquiry page supported
7705  * @page0:              inquiry page 0 buffer
7706  * @page:               page code.
7707  *
7708  * This function determines if the specified inquiry page is supported.
7709  *
7710  * Return value:
7711  *      1 if page is supported / 0 if not
7712  **/
7713 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7714 {
7715         int i;
7716
7717         for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7718                 if (page0->page[i] == page)
7719                         return 1;
7720
7721         return 0;
7722 }
7723
7724 /**
7725  * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7726  * @ipr_cmd:    ipr command struct
7727  *
7728  * This function sends a Page 0xD0 inquiry to the adapter
7729  * to retrieve adapter capabilities.
7730  *
7731  * Return value:
7732  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7733  **/
7734 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7735 {
7736         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7737         struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7738         struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7739
7740         ENTER;
7741         ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7742         memset(cap, 0, sizeof(*cap));
7743
7744         if (ipr_inquiry_page_supported(page0, 0xD0)) {
7745                 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7746                                   ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7747                                   sizeof(struct ipr_inquiry_cap));
7748                 return IPR_RC_JOB_RETURN;
7749         }
7750
7751         LEAVE;
7752         return IPR_RC_JOB_CONTINUE;
7753 }
7754
7755 /**
7756  * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7757  * @ipr_cmd:    ipr command struct
7758  *
7759  * This function sends a Page 3 inquiry to the adapter
7760  * to retrieve software VPD information.
7761  *
7762  * Return value:
7763  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7764  **/
7765 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7766 {
7767         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7768
7769         ENTER;
7770
7771         ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7772
7773         ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7774                           ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7775                           sizeof(struct ipr_inquiry_page3));
7776
7777         LEAVE;
7778         return IPR_RC_JOB_RETURN;
7779 }
7780
7781 /**
7782  * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7783  * @ipr_cmd:    ipr command struct
7784  *
7785  * This function sends a Page 0 inquiry to the adapter
7786  * to retrieve supported inquiry pages.
7787  *
7788  * Return value:
7789  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7790  **/
7791 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7792 {
7793         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7794         char type[5];
7795
7796         ENTER;
7797
7798         /* Grab the type out of the VPD and store it away */
7799         memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7800         type[4] = '\0';
7801         ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7802
7803         if (ipr_invalid_adapter(ioa_cfg)) {
7804                 dev_err(&ioa_cfg->pdev->dev,
7805                         "Adapter not supported in this hardware configuration.\n");
7806
7807                 if (!ipr_testmode) {
7808                         ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
7809                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7810                         list_add_tail(&ipr_cmd->queue,
7811                                         &ioa_cfg->hrrq->hrrq_free_q);
7812                         return IPR_RC_JOB_RETURN;
7813                 }
7814         }
7815
7816         ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7817
7818         ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7819                           ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7820                           sizeof(struct ipr_inquiry_page0));
7821
7822         LEAVE;
7823         return IPR_RC_JOB_RETURN;
7824 }
7825
7826 /**
7827  * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7828  * @ipr_cmd:    ipr command struct
7829  *
7830  * This function sends a standard inquiry to the adapter.
7831  *
7832  * Return value:
7833  *      IPR_RC_JOB_RETURN
7834  **/
7835 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7836 {
7837         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7838
7839         ENTER;
7840         ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7841
7842         ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7843                           ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7844                           sizeof(struct ipr_ioa_vpd));
7845
7846         LEAVE;
7847         return IPR_RC_JOB_RETURN;
7848 }
7849
7850 /**
7851  * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7852  * @ipr_cmd:    ipr command struct
7853  *
7854  * This function send an Identify Host Request Response Queue
7855  * command to establish the HRRQ with the adapter.
7856  *
7857  * Return value:
7858  *      IPR_RC_JOB_RETURN
7859  **/
7860 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7861 {
7862         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7863         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7864         struct ipr_hrr_queue *hrrq;
7865
7866         ENTER;
7867         ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7868         dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7869
7870         if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
7871                 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
7872
7873                 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7874                 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7875
7876                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7877                 if (ioa_cfg->sis64)
7878                         ioarcb->cmd_pkt.cdb[1] = 0x1;
7879
7880                 if (ioa_cfg->nvectors == 1)
7881                         ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
7882                 else
7883                         ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
7884
7885                 ioarcb->cmd_pkt.cdb[2] =
7886                         ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
7887                 ioarcb->cmd_pkt.cdb[3] =
7888                         ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
7889                 ioarcb->cmd_pkt.cdb[4] =
7890                         ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
7891                 ioarcb->cmd_pkt.cdb[5] =
7892                         ((u64) hrrq->host_rrq_dma) & 0xff;
7893                 ioarcb->cmd_pkt.cdb[7] =
7894                         ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
7895                 ioarcb->cmd_pkt.cdb[8] =
7896                         (sizeof(u32) * hrrq->size) & 0xff;
7897
7898                 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7899                         ioarcb->cmd_pkt.cdb[9] =
7900                                         ioa_cfg->identify_hrrq_index;
7901
7902                 if (ioa_cfg->sis64) {
7903                         ioarcb->cmd_pkt.cdb[10] =
7904                                 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
7905                         ioarcb->cmd_pkt.cdb[11] =
7906                                 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
7907                         ioarcb->cmd_pkt.cdb[12] =
7908                                 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
7909                         ioarcb->cmd_pkt.cdb[13] =
7910                                 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
7911                 }
7912
7913                 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7914                         ioarcb->cmd_pkt.cdb[14] =
7915                                         ioa_cfg->identify_hrrq_index;
7916
7917                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7918                            IPR_INTERNAL_TIMEOUT);
7919
7920                 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
7921                         ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7922
7923                 LEAVE;
7924                 return IPR_RC_JOB_RETURN;
7925         }
7926
7927         LEAVE;
7928         return IPR_RC_JOB_CONTINUE;
7929 }
7930
7931 /**
7932  * ipr_reset_timer_done - Adapter reset timer function
7933  * @ipr_cmd:    ipr command struct
7934  *
7935  * Description: This function is used in adapter reset processing
7936  * for timing events. If the reset_cmd pointer in the IOA
7937  * config struct is not this adapter's we are doing nested
7938  * resets and fail_all_ops will take care of freeing the
7939  * command block.
7940  *
7941  * Return value:
7942  *      none
7943  **/
7944 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
7945 {
7946         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7947         unsigned long lock_flags = 0;
7948
7949         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7950
7951         if (ioa_cfg->reset_cmd == ipr_cmd) {
7952                 list_del(&ipr_cmd->queue);
7953                 ipr_cmd->done(ipr_cmd);
7954         }
7955
7956         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7957 }
7958
7959 /**
7960  * ipr_reset_start_timer - Start a timer for adapter reset job
7961  * @ipr_cmd:    ipr command struct
7962  * @timeout:    timeout value
7963  *
7964  * Description: This function is used in adapter reset processing
7965  * for timing events. If the reset_cmd pointer in the IOA
7966  * config struct is not this adapter's we are doing nested
7967  * resets and fail_all_ops will take care of freeing the
7968  * command block.
7969  *
7970  * Return value:
7971  *      none
7972  **/
7973 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
7974                                   unsigned long timeout)
7975 {
7976
7977         ENTER;
7978         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7979         ipr_cmd->done = ipr_reset_ioa_job;
7980
7981         ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7982         ipr_cmd->timer.expires = jiffies + timeout;
7983         ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
7984         add_timer(&ipr_cmd->timer);
7985 }
7986
7987 /**
7988  * ipr_init_ioa_mem - Initialize ioa_cfg control block
7989  * @ioa_cfg:    ioa cfg struct
7990  *
7991  * Return value:
7992  *      nothing
7993  **/
7994 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
7995 {
7996         struct ipr_hrr_queue *hrrq;
7997
7998         for_each_hrrq(hrrq, ioa_cfg) {
7999                 spin_lock(&hrrq->_lock);
8000                 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
8001
8002                 /* Initialize Host RRQ pointers */
8003                 hrrq->hrrq_start = hrrq->host_rrq;
8004                 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
8005                 hrrq->hrrq_curr = hrrq->hrrq_start;
8006                 hrrq->toggle_bit = 1;
8007                 spin_unlock(&hrrq->_lock);
8008         }
8009         wmb();
8010
8011         ioa_cfg->identify_hrrq_index = 0;
8012         if (ioa_cfg->hrrq_num == 1)
8013                 atomic_set(&ioa_cfg->hrrq_index, 0);
8014         else
8015                 atomic_set(&ioa_cfg->hrrq_index, 1);
8016
8017         /* Zero out config table */
8018         memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
8019 }
8020
8021 /**
8022  * ipr_reset_next_stage - Process IPL stage change based on feedback register.
8023  * @ipr_cmd:    ipr command struct
8024  *
8025  * Return value:
8026  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8027  **/
8028 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
8029 {
8030         unsigned long stage, stage_time;
8031         u32 feedback;
8032         volatile u32 int_reg;
8033         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8034         u64 maskval = 0;
8035
8036         feedback = readl(ioa_cfg->regs.init_feedback_reg);
8037         stage = feedback & IPR_IPL_INIT_STAGE_MASK;
8038         stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
8039
8040         ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
8041
8042         /* sanity check the stage_time value */
8043         if (stage_time == 0)
8044                 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
8045         else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
8046                 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
8047         else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
8048                 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
8049
8050         if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
8051                 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
8052                 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8053                 stage_time = ioa_cfg->transop_timeout;
8054                 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8055         } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
8056                 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8057                 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8058                         ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8059                         maskval = IPR_PCII_IPL_STAGE_CHANGE;
8060                         maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
8061                         writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
8062                         int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8063                         return IPR_RC_JOB_CONTINUE;
8064                 }
8065         }
8066
8067         ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8068         ipr_cmd->timer.expires = jiffies + stage_time * HZ;
8069         ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8070         ipr_cmd->done = ipr_reset_ioa_job;
8071         add_timer(&ipr_cmd->timer);
8072
8073         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8074
8075         return IPR_RC_JOB_RETURN;
8076 }
8077
8078 /**
8079  * ipr_reset_enable_ioa - Enable the IOA following a reset.
8080  * @ipr_cmd:    ipr command struct
8081  *
8082  * This function reinitializes some control blocks and
8083  * enables destructive diagnostics on the adapter.
8084  *
8085  * Return value:
8086  *      IPR_RC_JOB_RETURN
8087  **/
8088 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
8089 {
8090         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8091         volatile u32 int_reg;
8092         volatile u64 maskval;
8093         int i;
8094
8095         ENTER;
8096         ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8097         ipr_init_ioa_mem(ioa_cfg);
8098
8099         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8100                 spin_lock(&ioa_cfg->hrrq[i]._lock);
8101                 ioa_cfg->hrrq[i].allow_interrupts = 1;
8102                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8103         }
8104         wmb();
8105         if (ioa_cfg->sis64) {
8106                 /* Set the adapter to the correct endian mode. */
8107                 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8108                 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8109         }
8110
8111         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8112
8113         if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8114                 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
8115                        ioa_cfg->regs.clr_interrupt_mask_reg32);
8116                 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8117                 return IPR_RC_JOB_CONTINUE;
8118         }
8119
8120         /* Enable destructive diagnostics on IOA */
8121         writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
8122
8123         if (ioa_cfg->sis64) {
8124                 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8125                 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
8126                 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
8127         } else
8128                 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
8129
8130         int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8131
8132         dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
8133
8134         if (ioa_cfg->sis64) {
8135                 ipr_cmd->job_step = ipr_reset_next_stage;
8136                 return IPR_RC_JOB_CONTINUE;
8137         }
8138
8139         ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8140         ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
8141         ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8142         ipr_cmd->done = ipr_reset_ioa_job;
8143         add_timer(&ipr_cmd->timer);
8144         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8145
8146         LEAVE;
8147         return IPR_RC_JOB_RETURN;
8148 }
8149
8150 /**
8151  * ipr_reset_wait_for_dump - Wait for a dump to timeout.
8152  * @ipr_cmd:    ipr command struct
8153  *
8154  * This function is invoked when an adapter dump has run out
8155  * of processing time.
8156  *
8157  * Return value:
8158  *      IPR_RC_JOB_CONTINUE
8159  **/
8160 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
8161 {
8162         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8163
8164         if (ioa_cfg->sdt_state == GET_DUMP)
8165                 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8166         else if (ioa_cfg->sdt_state == READ_DUMP)
8167                 ioa_cfg->sdt_state = ABORT_DUMP;
8168
8169         ioa_cfg->dump_timeout = 1;
8170         ipr_cmd->job_step = ipr_reset_alert;
8171
8172         return IPR_RC_JOB_CONTINUE;
8173 }
8174
8175 /**
8176  * ipr_unit_check_no_data - Log a unit check/no data error log
8177  * @ioa_cfg:            ioa config struct
8178  *
8179  * Logs an error indicating the adapter unit checked, but for some
8180  * reason, we were unable to fetch the unit check buffer.
8181  *
8182  * Return value:
8183  *      nothing
8184  **/
8185 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8186 {
8187         ioa_cfg->errors_logged++;
8188         dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8189 }
8190
8191 /**
8192  * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8193  * @ioa_cfg:            ioa config struct
8194  *
8195  * Fetches the unit check buffer from the adapter by clocking the data
8196  * through the mailbox register.
8197  *
8198  * Return value:
8199  *      nothing
8200  **/
8201 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8202 {
8203         unsigned long mailbox;
8204         struct ipr_hostrcb *hostrcb;
8205         struct ipr_uc_sdt sdt;
8206         int rc, length;
8207         u32 ioasc;
8208
8209         mailbox = readl(ioa_cfg->ioa_mailbox);
8210
8211         if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8212                 ipr_unit_check_no_data(ioa_cfg);
8213                 return;
8214         }
8215
8216         memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8217         rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8218                                         (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8219
8220         if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8221             ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8222             (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8223                 ipr_unit_check_no_data(ioa_cfg);
8224                 return;
8225         }
8226
8227         /* Find length of the first sdt entry (UC buffer) */
8228         if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8229                 length = be32_to_cpu(sdt.entry[0].end_token);
8230         else
8231                 length = (be32_to_cpu(sdt.entry[0].end_token) -
8232                           be32_to_cpu(sdt.entry[0].start_token)) &
8233                           IPR_FMT2_MBX_ADDR_MASK;
8234
8235         hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8236                              struct ipr_hostrcb, queue);
8237         list_del(&hostrcb->queue);
8238         memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8239
8240         rc = ipr_get_ldump_data_section(ioa_cfg,
8241                                         be32_to_cpu(sdt.entry[0].start_token),
8242                                         (__be32 *)&hostrcb->hcam,
8243                                         min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8244
8245         if (!rc) {
8246                 ipr_handle_log_data(ioa_cfg, hostrcb);
8247                 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8248                 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8249                     ioa_cfg->sdt_state == GET_DUMP)
8250                         ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8251         } else
8252                 ipr_unit_check_no_data(ioa_cfg);
8253
8254         list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8255 }
8256
8257 /**
8258  * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8259  * @ipr_cmd:    ipr command struct
8260  *
8261  * Description: This function will call to get the unit check buffer.
8262  *
8263  * Return value:
8264  *      IPR_RC_JOB_RETURN
8265  **/
8266 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8267 {
8268         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8269
8270         ENTER;
8271         ioa_cfg->ioa_unit_checked = 0;
8272         ipr_get_unit_check_buffer(ioa_cfg);
8273         ipr_cmd->job_step = ipr_reset_alert;
8274         ipr_reset_start_timer(ipr_cmd, 0);
8275
8276         LEAVE;
8277         return IPR_RC_JOB_RETURN;
8278 }
8279
8280 /**
8281  * ipr_reset_restore_cfg_space - Restore PCI config space.
8282  * @ipr_cmd:    ipr command struct
8283  *
8284  * Description: This function restores the saved PCI config space of
8285  * the adapter, fails all outstanding ops back to the callers, and
8286  * fetches the dump/unit check if applicable to this reset.
8287  *
8288  * Return value:
8289  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8290  **/
8291 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8292 {
8293         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8294         u32 int_reg;
8295
8296         ENTER;
8297         ioa_cfg->pdev->state_saved = true;
8298         pci_restore_state(ioa_cfg->pdev);
8299
8300         if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8301                 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8302                 return IPR_RC_JOB_CONTINUE;
8303         }
8304
8305         ipr_fail_all_ops(ioa_cfg);
8306
8307         if (ioa_cfg->sis64) {
8308                 /* Set the adapter to the correct endian mode. */
8309                 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8310                 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8311         }
8312
8313         if (ioa_cfg->ioa_unit_checked) {
8314                 if (ioa_cfg->sis64) {
8315                         ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8316                         ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8317                         return IPR_RC_JOB_RETURN;
8318                 } else {
8319                         ioa_cfg->ioa_unit_checked = 0;
8320                         ipr_get_unit_check_buffer(ioa_cfg);
8321                         ipr_cmd->job_step = ipr_reset_alert;
8322                         ipr_reset_start_timer(ipr_cmd, 0);
8323                         return IPR_RC_JOB_RETURN;
8324                 }
8325         }
8326
8327         if (ioa_cfg->in_ioa_bringdown) {
8328                 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8329         } else {
8330                 ipr_cmd->job_step = ipr_reset_enable_ioa;
8331
8332                 if (GET_DUMP == ioa_cfg->sdt_state) {
8333                         ioa_cfg->sdt_state = READ_DUMP;
8334                         ioa_cfg->dump_timeout = 0;
8335                         if (ioa_cfg->sis64)
8336                                 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8337                         else
8338                                 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8339                         ipr_cmd->job_step = ipr_reset_wait_for_dump;
8340                         schedule_work(&ioa_cfg->work_q);
8341                         return IPR_RC_JOB_RETURN;
8342                 }
8343         }
8344
8345         LEAVE;
8346         return IPR_RC_JOB_CONTINUE;
8347 }
8348
8349 /**
8350  * ipr_reset_bist_done - BIST has completed on the adapter.
8351  * @ipr_cmd:    ipr command struct
8352  *
8353  * Description: Unblock config space and resume the reset process.
8354  *
8355  * Return value:
8356  *      IPR_RC_JOB_CONTINUE
8357  **/
8358 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8359 {
8360         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8361
8362         ENTER;
8363         if (ioa_cfg->cfg_locked)
8364                 pci_cfg_access_unlock(ioa_cfg->pdev);
8365         ioa_cfg->cfg_locked = 0;
8366         ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8367         LEAVE;
8368         return IPR_RC_JOB_CONTINUE;
8369 }
8370
8371 /**
8372  * ipr_reset_start_bist - Run BIST on the adapter.
8373  * @ipr_cmd:    ipr command struct
8374  *
8375  * Description: This function runs BIST on the adapter, then delays 2 seconds.
8376  *
8377  * Return value:
8378  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8379  **/
8380 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8381 {
8382         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8383         int rc = PCIBIOS_SUCCESSFUL;
8384
8385         ENTER;
8386         if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8387                 writel(IPR_UPROCI_SIS64_START_BIST,
8388                        ioa_cfg->regs.set_uproc_interrupt_reg32);
8389         else
8390                 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8391
8392         if (rc == PCIBIOS_SUCCESSFUL) {
8393                 ipr_cmd->job_step = ipr_reset_bist_done;
8394                 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8395                 rc = IPR_RC_JOB_RETURN;
8396         } else {
8397                 if (ioa_cfg->cfg_locked)
8398                         pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8399                 ioa_cfg->cfg_locked = 0;
8400                 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8401                 rc = IPR_RC_JOB_CONTINUE;
8402         }
8403
8404         LEAVE;
8405         return rc;
8406 }
8407
8408 /**
8409  * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8410  * @ipr_cmd:    ipr command struct
8411  *
8412  * Description: This clears PCI reset to the adapter and delays two seconds.
8413  *
8414  * Return value:
8415  *      IPR_RC_JOB_RETURN
8416  **/
8417 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8418 {
8419         ENTER;
8420         ipr_cmd->job_step = ipr_reset_bist_done;
8421         ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8422         LEAVE;
8423         return IPR_RC_JOB_RETURN;
8424 }
8425
8426 /**
8427  * ipr_reset_reset_work - Pulse a PCIe fundamental reset
8428  * @work:       work struct
8429  *
8430  * Description: This pulses warm reset to a slot.
8431  *
8432  **/
8433 static void ipr_reset_reset_work(struct work_struct *work)
8434 {
8435         struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
8436         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8437         struct pci_dev *pdev = ioa_cfg->pdev;
8438         unsigned long lock_flags = 0;
8439
8440         ENTER;
8441         pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8442         msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
8443         pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8444
8445         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8446         if (ioa_cfg->reset_cmd == ipr_cmd)
8447                 ipr_reset_ioa_job(ipr_cmd);
8448         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8449         LEAVE;
8450 }
8451
8452 /**
8453  * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8454  * @ipr_cmd:    ipr command struct
8455  *
8456  * Description: This asserts PCI reset to the adapter.
8457  *
8458  * Return value:
8459  *      IPR_RC_JOB_RETURN
8460  **/
8461 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8462 {
8463         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8464
8465         ENTER;
8466         INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8467         queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8468         ipr_cmd->job_step = ipr_reset_slot_reset_done;
8469         LEAVE;
8470         return IPR_RC_JOB_RETURN;
8471 }
8472
8473 /**
8474  * ipr_reset_block_config_access_wait - Wait for permission to block config access
8475  * @ipr_cmd:    ipr command struct
8476  *
8477  * Description: This attempts to block config access to the IOA.
8478  *
8479  * Return value:
8480  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8481  **/
8482 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8483 {
8484         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8485         int rc = IPR_RC_JOB_CONTINUE;
8486
8487         if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8488                 ioa_cfg->cfg_locked = 1;
8489                 ipr_cmd->job_step = ioa_cfg->reset;
8490         } else {
8491                 if (ipr_cmd->u.time_left) {
8492                         rc = IPR_RC_JOB_RETURN;
8493                         ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8494                         ipr_reset_start_timer(ipr_cmd,
8495                                               IPR_CHECK_FOR_RESET_TIMEOUT);
8496                 } else {
8497                         ipr_cmd->job_step = ioa_cfg->reset;
8498                         dev_err(&ioa_cfg->pdev->dev,
8499                                 "Timed out waiting to lock config access. Resetting anyway.\n");
8500                 }
8501         }
8502
8503         return rc;
8504 }
8505
8506 /**
8507  * ipr_reset_block_config_access - Block config access to the IOA
8508  * @ipr_cmd:    ipr command struct
8509  *
8510  * Description: This attempts to block config access to the IOA
8511  *
8512  * Return value:
8513  *      IPR_RC_JOB_CONTINUE
8514  **/
8515 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8516 {
8517         ipr_cmd->ioa_cfg->cfg_locked = 0;
8518         ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8519         ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8520         return IPR_RC_JOB_CONTINUE;
8521 }
8522
8523 /**
8524  * ipr_reset_allowed - Query whether or not IOA can be reset
8525  * @ioa_cfg:    ioa config struct
8526  *
8527  * Return value:
8528  *      0 if reset not allowed / non-zero if reset is allowed
8529  **/
8530 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8531 {
8532         volatile u32 temp_reg;
8533
8534         temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8535         return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8536 }
8537
8538 /**
8539  * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8540  * @ipr_cmd:    ipr command struct
8541  *
8542  * Description: This function waits for adapter permission to run BIST,
8543  * then runs BIST. If the adapter does not give permission after a
8544  * reasonable time, we will reset the adapter anyway. The impact of
8545  * resetting the adapter without warning the adapter is the risk of
8546  * losing the persistent error log on the adapter. If the adapter is
8547  * reset while it is writing to the flash on the adapter, the flash
8548  * segment will have bad ECC and be zeroed.
8549  *
8550  * Return value:
8551  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8552  **/
8553 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8554 {
8555         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8556         int rc = IPR_RC_JOB_RETURN;
8557
8558         if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8559                 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8560                 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8561         } else {
8562                 ipr_cmd->job_step = ipr_reset_block_config_access;
8563                 rc = IPR_RC_JOB_CONTINUE;
8564         }
8565
8566         return rc;
8567 }
8568
8569 /**
8570  * ipr_reset_alert - Alert the adapter of a pending reset
8571  * @ipr_cmd:    ipr command struct
8572  *
8573  * Description: This function alerts the adapter that it will be reset.
8574  * If memory space is not currently enabled, proceed directly
8575  * to running BIST on the adapter. The timer must always be started
8576  * so we guarantee we do not run BIST from ipr_isr.
8577  *
8578  * Return value:
8579  *      IPR_RC_JOB_RETURN
8580  **/
8581 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8582 {
8583         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8584         u16 cmd_reg;
8585         int rc;
8586
8587         ENTER;
8588         rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8589
8590         if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8591                 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8592                 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8593                 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8594         } else {
8595                 ipr_cmd->job_step = ipr_reset_block_config_access;
8596         }
8597
8598         ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8599         ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8600
8601         LEAVE;
8602         return IPR_RC_JOB_RETURN;
8603 }
8604
8605 /**
8606  * ipr_reset_quiesce_done - Complete IOA disconnect
8607  * @ipr_cmd:    ipr command struct
8608  *
8609  * Description: Freeze the adapter to complete quiesce processing
8610  *
8611  * Return value:
8612  *      IPR_RC_JOB_CONTINUE
8613  **/
8614 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8615 {
8616         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8617
8618         ENTER;
8619         ipr_cmd->job_step = ipr_ioa_bringdown_done;
8620         ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8621         LEAVE;
8622         return IPR_RC_JOB_CONTINUE;
8623 }
8624
8625 /**
8626  * ipr_reset_cancel_hcam_done - Check for outstanding commands
8627  * @ipr_cmd:    ipr command struct
8628  *
8629  * Description: Ensure nothing is outstanding to the IOA and
8630  *                      proceed with IOA disconnect. Otherwise reset the IOA.
8631  *
8632  * Return value:
8633  *      IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8634  **/
8635 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8636 {
8637         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8638         struct ipr_cmnd *loop_cmd;
8639         struct ipr_hrr_queue *hrrq;
8640         int rc = IPR_RC_JOB_CONTINUE;
8641         int count = 0;
8642
8643         ENTER;
8644         ipr_cmd->job_step = ipr_reset_quiesce_done;
8645
8646         for_each_hrrq(hrrq, ioa_cfg) {
8647                 spin_lock(&hrrq->_lock);
8648                 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
8649                         count++;
8650                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8651                         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
8652                         rc = IPR_RC_JOB_RETURN;
8653                         break;
8654                 }
8655                 spin_unlock(&hrrq->_lock);
8656
8657                 if (count)
8658                         break;
8659         }
8660
8661         LEAVE;
8662         return rc;
8663 }
8664
8665 /**
8666  * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
8667  * @ipr_cmd:    ipr command struct
8668  *
8669  * Description: Cancel any oustanding HCAMs to the IOA.
8670  *
8671  * Return value:
8672  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8673  **/
8674 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
8675 {
8676         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8677         int rc = IPR_RC_JOB_CONTINUE;
8678         struct ipr_cmd_pkt *cmd_pkt;
8679         struct ipr_cmnd *hcam_cmd;
8680         struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
8681
8682         ENTER;
8683         ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
8684
8685         if (!hrrq->ioa_is_dead) {
8686                 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
8687                         list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
8688                                 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
8689                                         continue;
8690
8691                                 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8692                                 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8693                                 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
8694                                 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
8695                                 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
8696                                 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
8697                                 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
8698                                 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
8699                                 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
8700                                 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
8701                                 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
8702                                 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
8703                                 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
8704                                 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
8705
8706                                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8707                                            IPR_CANCEL_TIMEOUT);
8708
8709                                 rc = IPR_RC_JOB_RETURN;
8710                                 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8711                                 break;
8712                         }
8713                 }
8714         } else
8715                 ipr_cmd->job_step = ipr_reset_alert;
8716
8717         LEAVE;
8718         return rc;
8719 }
8720
8721 /**
8722  * ipr_reset_ucode_download_done - Microcode download completion
8723  * @ipr_cmd:    ipr command struct
8724  *
8725  * Description: This function unmaps the microcode download buffer.
8726  *
8727  * Return value:
8728  *      IPR_RC_JOB_CONTINUE
8729  **/
8730 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
8731 {
8732         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8733         struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8734
8735         dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
8736                      sglist->num_sg, DMA_TO_DEVICE);
8737
8738         ipr_cmd->job_step = ipr_reset_alert;
8739         return IPR_RC_JOB_CONTINUE;
8740 }
8741
8742 /**
8743  * ipr_reset_ucode_download - Download microcode to the adapter
8744  * @ipr_cmd:    ipr command struct
8745  *
8746  * Description: This function checks to see if it there is microcode
8747  * to download to the adapter. If there is, a download is performed.
8748  *
8749  * Return value:
8750  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8751  **/
8752 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
8753 {
8754         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8755         struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8756
8757         ENTER;
8758         ipr_cmd->job_step = ipr_reset_alert;
8759
8760         if (!sglist)
8761                 return IPR_RC_JOB_CONTINUE;
8762
8763         ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8764         ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
8765         ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
8766         ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
8767         ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
8768         ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
8769         ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
8770
8771         if (ioa_cfg->sis64)
8772                 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
8773         else
8774                 ipr_build_ucode_ioadl(ipr_cmd, sglist);
8775         ipr_cmd->job_step = ipr_reset_ucode_download_done;
8776
8777         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8778                    IPR_WRITE_BUFFER_TIMEOUT);
8779
8780         LEAVE;
8781         return IPR_RC_JOB_RETURN;
8782 }
8783
8784 /**
8785  * ipr_reset_shutdown_ioa - Shutdown the adapter
8786  * @ipr_cmd:    ipr command struct
8787  *
8788  * Description: This function issues an adapter shutdown of the
8789  * specified type to the specified adapter as part of the
8790  * adapter reset job.
8791  *
8792  * Return value:
8793  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8794  **/
8795 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
8796 {
8797         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8798         enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
8799         unsigned long timeout;
8800         int rc = IPR_RC_JOB_CONTINUE;
8801
8802         ENTER;
8803         if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
8804                 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8805         else if (shutdown_type != IPR_SHUTDOWN_NONE &&
8806                         !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
8807                 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8808                 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8809                 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
8810                 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
8811
8812                 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
8813                         timeout = IPR_SHUTDOWN_TIMEOUT;
8814                 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
8815                         timeout = IPR_INTERNAL_TIMEOUT;
8816                 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
8817                         timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
8818                 else
8819                         timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
8820
8821                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
8822
8823                 rc = IPR_RC_JOB_RETURN;
8824                 ipr_cmd->job_step = ipr_reset_ucode_download;
8825         } else
8826                 ipr_cmd->job_step = ipr_reset_alert;
8827
8828         LEAVE;
8829         return rc;
8830 }
8831
8832 /**
8833  * ipr_reset_ioa_job - Adapter reset job
8834  * @ipr_cmd:    ipr command struct
8835  *
8836  * Description: This function is the job router for the adapter reset job.
8837  *
8838  * Return value:
8839  *      none
8840  **/
8841 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
8842 {
8843         u32 rc, ioasc;
8844         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8845
8846         do {
8847                 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8848
8849                 if (ioa_cfg->reset_cmd != ipr_cmd) {
8850                         /*
8851                          * We are doing nested adapter resets and this is
8852                          * not the current reset job.
8853                          */
8854                         list_add_tail(&ipr_cmd->queue,
8855                                         &ipr_cmd->hrrq->hrrq_free_q);
8856                         return;
8857                 }
8858
8859                 if (IPR_IOASC_SENSE_KEY(ioasc)) {
8860                         rc = ipr_cmd->job_step_failed(ipr_cmd);
8861                         if (rc == IPR_RC_JOB_RETURN)
8862                                 return;
8863                 }
8864
8865                 ipr_reinit_ipr_cmnd(ipr_cmd);
8866                 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
8867                 rc = ipr_cmd->job_step(ipr_cmd);
8868         } while (rc == IPR_RC_JOB_CONTINUE);
8869 }
8870
8871 /**
8872  * _ipr_initiate_ioa_reset - Initiate an adapter reset
8873  * @ioa_cfg:            ioa config struct
8874  * @job_step:           first job step of reset job
8875  * @shutdown_type:      shutdown type
8876  *
8877  * Description: This function will initiate the reset of the given adapter
8878  * starting at the selected job step.
8879  * If the caller needs to wait on the completion of the reset,
8880  * the caller must sleep on the reset_wait_q.
8881  *
8882  * Return value:
8883  *      none
8884  **/
8885 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8886                                     int (*job_step) (struct ipr_cmnd *),
8887                                     enum ipr_shutdown_type shutdown_type)
8888 {
8889         struct ipr_cmnd *ipr_cmd;
8890         int i;
8891
8892         ioa_cfg->in_reset_reload = 1;
8893         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8894                 spin_lock(&ioa_cfg->hrrq[i]._lock);
8895                 ioa_cfg->hrrq[i].allow_cmds = 0;
8896                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8897         }
8898         wmb();
8899         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa)
8900                 scsi_block_requests(ioa_cfg->host);
8901
8902         ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
8903         ioa_cfg->reset_cmd = ipr_cmd;
8904         ipr_cmd->job_step = job_step;
8905         ipr_cmd->u.shutdown_type = shutdown_type;
8906
8907         ipr_reset_ioa_job(ipr_cmd);
8908 }
8909
8910 /**
8911  * ipr_initiate_ioa_reset - Initiate an adapter reset
8912  * @ioa_cfg:            ioa config struct
8913  * @shutdown_type:      shutdown type
8914  *
8915  * Description: This function will initiate the reset of the given adapter.
8916  * If the caller needs to wait on the completion of the reset,
8917  * the caller must sleep on the reset_wait_q.
8918  *
8919  * Return value:
8920  *      none
8921  **/
8922 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8923                                    enum ipr_shutdown_type shutdown_type)
8924 {
8925         int i;
8926
8927         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
8928                 return;
8929
8930         if (ioa_cfg->in_reset_reload) {
8931                 if (ioa_cfg->sdt_state == GET_DUMP)
8932                         ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8933                 else if (ioa_cfg->sdt_state == READ_DUMP)
8934                         ioa_cfg->sdt_state = ABORT_DUMP;
8935         }
8936
8937         if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
8938                 dev_err(&ioa_cfg->pdev->dev,
8939                         "IOA taken offline - error recovery failed\n");
8940
8941                 ioa_cfg->reset_retries = 0;
8942                 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8943                         spin_lock(&ioa_cfg->hrrq[i]._lock);
8944                         ioa_cfg->hrrq[i].ioa_is_dead = 1;
8945                         spin_unlock(&ioa_cfg->hrrq[i]._lock);
8946                 }
8947                 wmb();
8948
8949                 if (ioa_cfg->in_ioa_bringdown) {
8950                         ioa_cfg->reset_cmd = NULL;
8951                         ioa_cfg->in_reset_reload = 0;
8952                         ipr_fail_all_ops(ioa_cfg);
8953                         wake_up_all(&ioa_cfg->reset_wait_q);
8954
8955                         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
8956                                 spin_unlock_irq(ioa_cfg->host->host_lock);
8957                                 scsi_unblock_requests(ioa_cfg->host);
8958                                 spin_lock_irq(ioa_cfg->host->host_lock);
8959                         }
8960                         return;
8961                 } else {
8962                         ioa_cfg->in_ioa_bringdown = 1;
8963                         shutdown_type = IPR_SHUTDOWN_NONE;
8964                 }
8965         }
8966
8967         _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
8968                                 shutdown_type);
8969 }
8970
8971 /**
8972  * ipr_reset_freeze - Hold off all I/O activity
8973  * @ipr_cmd:    ipr command struct
8974  *
8975  * Description: If the PCI slot is frozen, hold off all I/O
8976  * activity; then, as soon as the slot is available again,
8977  * initiate an adapter reset.
8978  */
8979 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
8980 {
8981         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8982         int i;
8983
8984         /* Disallow new interrupts, avoid loop */
8985         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8986                 spin_lock(&ioa_cfg->hrrq[i]._lock);
8987                 ioa_cfg->hrrq[i].allow_interrupts = 0;
8988                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8989         }
8990         wmb();
8991         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8992         ipr_cmd->done = ipr_reset_ioa_job;
8993         return IPR_RC_JOB_RETURN;
8994 }
8995
8996 /**
8997  * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
8998  * @pdev:       PCI device struct
8999  *
9000  * Description: This routine is called to tell us that the MMIO
9001  * access to the IOA has been restored
9002  */
9003 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
9004 {
9005         unsigned long flags = 0;
9006         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9007
9008         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9009         if (!ioa_cfg->probe_done)
9010                 pci_save_state(pdev);
9011         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9012         return PCI_ERS_RESULT_NEED_RESET;
9013 }
9014
9015 /**
9016  * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
9017  * @pdev:       PCI device struct
9018  *
9019  * Description: This routine is called to tell us that the PCI bus
9020  * is down. Can't do anything here, except put the device driver
9021  * into a holding pattern, waiting for the PCI bus to come back.
9022  */
9023 static void ipr_pci_frozen(struct pci_dev *pdev)
9024 {
9025         unsigned long flags = 0;
9026         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9027
9028         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9029         if (ioa_cfg->probe_done)
9030                 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
9031         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9032 }
9033
9034 /**
9035  * ipr_pci_slot_reset - Called when PCI slot has been reset.
9036  * @pdev:       PCI device struct
9037  *
9038  * Description: This routine is called by the pci error recovery
9039  * code after the PCI slot has been reset, just before we
9040  * should resume normal operations.
9041  */
9042 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
9043 {
9044         unsigned long flags = 0;
9045         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9046
9047         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9048         if (ioa_cfg->probe_done) {
9049                 if (ioa_cfg->needs_warm_reset)
9050                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9051                 else
9052                         _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
9053                                                 IPR_SHUTDOWN_NONE);
9054         } else
9055                 wake_up_all(&ioa_cfg->eeh_wait_q);
9056         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9057         return PCI_ERS_RESULT_RECOVERED;
9058 }
9059
9060 /**
9061  * ipr_pci_perm_failure - Called when PCI slot is dead for good.
9062  * @pdev:       PCI device struct
9063  *
9064  * Description: This routine is called when the PCI bus has
9065  * permanently failed.
9066  */
9067 static void ipr_pci_perm_failure(struct pci_dev *pdev)
9068 {
9069         unsigned long flags = 0;
9070         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9071         int i;
9072
9073         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9074         if (ioa_cfg->probe_done) {
9075                 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9076                         ioa_cfg->sdt_state = ABORT_DUMP;
9077                 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
9078                 ioa_cfg->in_ioa_bringdown = 1;
9079                 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9080                         spin_lock(&ioa_cfg->hrrq[i]._lock);
9081                         ioa_cfg->hrrq[i].allow_cmds = 0;
9082                         spin_unlock(&ioa_cfg->hrrq[i]._lock);
9083                 }
9084                 wmb();
9085                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9086         } else
9087                 wake_up_all(&ioa_cfg->eeh_wait_q);
9088         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9089 }
9090
9091 /**
9092  * ipr_pci_error_detected - Called when a PCI error is detected.
9093  * @pdev:       PCI device struct
9094  * @state:      PCI channel state
9095  *
9096  * Description: Called when a PCI error is detected.
9097  *
9098  * Return value:
9099  *      PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9100  */
9101 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
9102                                                pci_channel_state_t state)
9103 {
9104         switch (state) {
9105         case pci_channel_io_frozen:
9106                 ipr_pci_frozen(pdev);
9107                 return PCI_ERS_RESULT_CAN_RECOVER;
9108         case pci_channel_io_perm_failure:
9109                 ipr_pci_perm_failure(pdev);
9110                 return PCI_ERS_RESULT_DISCONNECT;
9111                 break;
9112         default:
9113                 break;
9114         }
9115         return PCI_ERS_RESULT_NEED_RESET;
9116 }
9117
9118 /**
9119  * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
9120  * @ioa_cfg:    ioa cfg struct
9121  *
9122  * Description: This is the second phase of adapter intialization
9123  * This function takes care of initilizing the adapter to the point
9124  * where it can accept new commands.
9125
9126  * Return value:
9127  *      0 on success / -EIO on failure
9128  **/
9129 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
9130 {
9131         int rc = 0;
9132         unsigned long host_lock_flags = 0;
9133
9134         ENTER;
9135         spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9136         dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
9137         ioa_cfg->probe_done = 1;
9138         if (ioa_cfg->needs_hard_reset) {
9139                 ioa_cfg->needs_hard_reset = 0;
9140                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9141         } else
9142                 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
9143                                         IPR_SHUTDOWN_NONE);
9144         spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9145
9146         LEAVE;
9147         return rc;
9148 }
9149
9150 /**
9151  * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
9152  * @ioa_cfg:    ioa config struct
9153  *
9154  * Return value:
9155  *      none
9156  **/
9157 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9158 {
9159         int i;
9160
9161         if (ioa_cfg->ipr_cmnd_list) {
9162                 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9163                         if (ioa_cfg->ipr_cmnd_list[i])
9164                                 dma_pool_free(ioa_cfg->ipr_cmd_pool,
9165                                               ioa_cfg->ipr_cmnd_list[i],
9166                                               ioa_cfg->ipr_cmnd_list_dma[i]);
9167
9168                         ioa_cfg->ipr_cmnd_list[i] = NULL;
9169                 }
9170         }
9171
9172         if (ioa_cfg->ipr_cmd_pool)
9173                 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
9174
9175         kfree(ioa_cfg->ipr_cmnd_list);
9176         kfree(ioa_cfg->ipr_cmnd_list_dma);
9177         ioa_cfg->ipr_cmnd_list = NULL;
9178         ioa_cfg->ipr_cmnd_list_dma = NULL;
9179         ioa_cfg->ipr_cmd_pool = NULL;
9180 }
9181
9182 /**
9183  * ipr_free_mem - Frees memory allocated for an adapter
9184  * @ioa_cfg:    ioa cfg struct
9185  *
9186  * Return value:
9187  *      nothing
9188  **/
9189 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
9190 {
9191         int i;
9192
9193         kfree(ioa_cfg->res_entries);
9194         dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
9195                           ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9196         ipr_free_cmd_blks(ioa_cfg);
9197
9198         for (i = 0; i < ioa_cfg->hrrq_num; i++)
9199                 dma_free_coherent(&ioa_cfg->pdev->dev,
9200                                   sizeof(u32) * ioa_cfg->hrrq[i].size,
9201                                   ioa_cfg->hrrq[i].host_rrq,
9202                                   ioa_cfg->hrrq[i].host_rrq_dma);
9203
9204         dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
9205                           ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9206
9207         for (i = 0; i < IPR_NUM_HCAMS; i++) {
9208                 dma_free_coherent(&ioa_cfg->pdev->dev,
9209                                   sizeof(struct ipr_hostrcb),
9210                                   ioa_cfg->hostrcb[i],
9211                                   ioa_cfg->hostrcb_dma[i]);
9212         }
9213
9214         ipr_free_dump(ioa_cfg);
9215         kfree(ioa_cfg->trace);
9216 }
9217
9218 /**
9219  * ipr_free_irqs - Free all allocated IRQs for the adapter.
9220  * @ioa_cfg:    ipr cfg struct
9221  *
9222  * This function frees all allocated IRQs for the
9223  * specified adapter.
9224  *
9225  * Return value:
9226  *      none
9227  **/
9228 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
9229 {
9230         struct pci_dev *pdev = ioa_cfg->pdev;
9231
9232         if (ioa_cfg->intr_flag == IPR_USE_MSI ||
9233             ioa_cfg->intr_flag == IPR_USE_MSIX) {
9234                 int i;
9235                 for (i = 0; i < ioa_cfg->nvectors; i++)
9236                         free_irq(ioa_cfg->vectors_info[i].vec,
9237                                  &ioa_cfg->hrrq[i]);
9238         } else
9239                 free_irq(pdev->irq, &ioa_cfg->hrrq[0]);
9240
9241         if (ioa_cfg->intr_flag == IPR_USE_MSI) {
9242                 pci_disable_msi(pdev);
9243                 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
9244         } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
9245                 pci_disable_msix(pdev);
9246                 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
9247         }
9248 }
9249
9250 /**
9251  * ipr_free_all_resources - Free all allocated resources for an adapter.
9252  * @ipr_cmd:    ipr command struct
9253  *
9254  * This function frees all allocated resources for the
9255  * specified adapter.
9256  *
9257  * Return value:
9258  *      none
9259  **/
9260 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
9261 {
9262         struct pci_dev *pdev = ioa_cfg->pdev;
9263
9264         ENTER;
9265         ipr_free_irqs(ioa_cfg);
9266         if (ioa_cfg->reset_work_q)
9267                 destroy_workqueue(ioa_cfg->reset_work_q);
9268         iounmap(ioa_cfg->hdw_dma_regs);
9269         pci_release_regions(pdev);
9270         ipr_free_mem(ioa_cfg);
9271         scsi_host_put(ioa_cfg->host);
9272         pci_disable_device(pdev);
9273         LEAVE;
9274 }
9275
9276 /**
9277  * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
9278  * @ioa_cfg:    ioa config struct
9279  *
9280  * Return value:
9281  *      0 on success / -ENOMEM on allocation failure
9282  **/
9283 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9284 {
9285         struct ipr_cmnd *ipr_cmd;
9286         struct ipr_ioarcb *ioarcb;
9287         dma_addr_t dma_addr;
9288         int i, entries_each_hrrq, hrrq_id = 0;
9289
9290         ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
9291                                                 sizeof(struct ipr_cmnd), 512, 0);
9292
9293         if (!ioa_cfg->ipr_cmd_pool)
9294                 return -ENOMEM;
9295
9296         ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
9297         ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
9298
9299         if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
9300                 ipr_free_cmd_blks(ioa_cfg);
9301                 return -ENOMEM;
9302         }
9303
9304         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9305                 if (ioa_cfg->hrrq_num > 1) {
9306                         if (i == 0) {
9307                                 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
9308                                 ioa_cfg->hrrq[i].min_cmd_id = 0;
9309                                         ioa_cfg->hrrq[i].max_cmd_id =
9310                                                 (entries_each_hrrq - 1);
9311                         } else {
9312                                 entries_each_hrrq =
9313                                         IPR_NUM_BASE_CMD_BLKS/
9314                                         (ioa_cfg->hrrq_num - 1);
9315                                 ioa_cfg->hrrq[i].min_cmd_id =
9316                                         IPR_NUM_INTERNAL_CMD_BLKS +
9317                                         (i - 1) * entries_each_hrrq;
9318                                 ioa_cfg->hrrq[i].max_cmd_id =
9319                                         (IPR_NUM_INTERNAL_CMD_BLKS +
9320                                         i * entries_each_hrrq - 1);
9321                         }
9322                 } else {
9323                         entries_each_hrrq = IPR_NUM_CMD_BLKS;
9324                         ioa_cfg->hrrq[i].min_cmd_id = 0;
9325                         ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9326                 }
9327                 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9328         }
9329
9330         BUG_ON(ioa_cfg->hrrq_num == 0);
9331
9332         i = IPR_NUM_CMD_BLKS -
9333                 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9334         if (i > 0) {
9335                 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9336                 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9337         }
9338
9339         for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9340                 ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
9341
9342                 if (!ipr_cmd) {
9343                         ipr_free_cmd_blks(ioa_cfg);
9344                         return -ENOMEM;
9345                 }
9346
9347                 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
9348                 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9349                 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9350
9351                 ioarcb = &ipr_cmd->ioarcb;
9352                 ipr_cmd->dma_addr = dma_addr;
9353                 if (ioa_cfg->sis64)
9354                         ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9355                 else
9356                         ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9357
9358                 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9359                 if (ioa_cfg->sis64) {
9360                         ioarcb->u.sis64_addr_data.data_ioadl_addr =
9361                                 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9362                         ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9363                                 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9364                 } else {
9365                         ioarcb->write_ioadl_addr =
9366                                 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9367                         ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9368                         ioarcb->ioasa_host_pci_addr =
9369                                 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9370                 }
9371                 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9372                 ipr_cmd->cmd_index = i;
9373                 ipr_cmd->ioa_cfg = ioa_cfg;
9374                 ipr_cmd->sense_buffer_dma = dma_addr +
9375                         offsetof(struct ipr_cmnd, sense_buffer);
9376
9377                 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9378                 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9379                 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9380                 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9381                         hrrq_id++;
9382         }
9383
9384         return 0;
9385 }
9386
9387 /**
9388  * ipr_alloc_mem - Allocate memory for an adapter
9389  * @ioa_cfg:    ioa config struct
9390  *
9391  * Return value:
9392  *      0 on success / non-zero for error
9393  **/
9394 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9395 {
9396         struct pci_dev *pdev = ioa_cfg->pdev;
9397         int i, rc = -ENOMEM;
9398
9399         ENTER;
9400         ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
9401                                        ioa_cfg->max_devs_supported, GFP_KERNEL);
9402
9403         if (!ioa_cfg->res_entries)
9404                 goto out;
9405
9406         for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9407                 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9408                 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9409         }
9410
9411         ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
9412                                               sizeof(struct ipr_misc_cbs),
9413                                               &ioa_cfg->vpd_cbs_dma,
9414                                               GFP_KERNEL);
9415
9416         if (!ioa_cfg->vpd_cbs)
9417                 goto out_free_res_entries;
9418
9419         if (ipr_alloc_cmd_blks(ioa_cfg))
9420                 goto out_free_vpd_cbs;
9421
9422         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9423                 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
9424                                         sizeof(u32) * ioa_cfg->hrrq[i].size,
9425                                         &ioa_cfg->hrrq[i].host_rrq_dma,
9426                                         GFP_KERNEL);
9427
9428                 if (!ioa_cfg->hrrq[i].host_rrq)  {
9429                         while (--i > 0)
9430                                 dma_free_coherent(&pdev->dev,
9431                                         sizeof(u32) * ioa_cfg->hrrq[i].size,
9432                                         ioa_cfg->hrrq[i].host_rrq,
9433                                         ioa_cfg->hrrq[i].host_rrq_dma);
9434                         goto out_ipr_free_cmd_blocks;
9435                 }
9436                 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9437         }
9438
9439         ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
9440                                                   ioa_cfg->cfg_table_size,
9441                                                   &ioa_cfg->cfg_table_dma,
9442                                                   GFP_KERNEL);
9443
9444         if (!ioa_cfg->u.cfg_table)
9445                 goto out_free_host_rrq;
9446
9447         for (i = 0; i < IPR_NUM_HCAMS; i++) {
9448                 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
9449                                                          sizeof(struct ipr_hostrcb),
9450                                                          &ioa_cfg->hostrcb_dma[i],
9451                                                          GFP_KERNEL);
9452
9453                 if (!ioa_cfg->hostrcb[i])
9454                         goto out_free_hostrcb_dma;
9455
9456                 ioa_cfg->hostrcb[i]->hostrcb_dma =
9457                         ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9458                 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9459                 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9460         }
9461
9462         ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
9463                                  IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
9464
9465         if (!ioa_cfg->trace)
9466                 goto out_free_hostrcb_dma;
9467
9468         rc = 0;
9469 out:
9470         LEAVE;
9471         return rc;
9472
9473 out_free_hostrcb_dma:
9474         while (i-- > 0) {
9475                 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9476                                   ioa_cfg->hostrcb[i],
9477                                   ioa_cfg->hostrcb_dma[i]);
9478         }
9479         dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9480                           ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9481 out_free_host_rrq:
9482         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9483                 dma_free_coherent(&pdev->dev,
9484                                   sizeof(u32) * ioa_cfg->hrrq[i].size,
9485                                   ioa_cfg->hrrq[i].host_rrq,
9486                                   ioa_cfg->hrrq[i].host_rrq_dma);
9487         }
9488 out_ipr_free_cmd_blocks:
9489         ipr_free_cmd_blks(ioa_cfg);
9490 out_free_vpd_cbs:
9491         dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9492                           ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9493 out_free_res_entries:
9494         kfree(ioa_cfg->res_entries);
9495         goto out;
9496 }
9497
9498 /**
9499  * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9500  * @ioa_cfg:    ioa config struct
9501  *
9502  * Return value:
9503  *      none
9504  **/
9505 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9506 {
9507         int i;
9508
9509         for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9510                 ioa_cfg->bus_attr[i].bus = i;
9511                 ioa_cfg->bus_attr[i].qas_enabled = 0;
9512                 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9513                 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9514                         ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9515                 else
9516                         ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9517         }
9518 }
9519
9520 /**
9521  * ipr_init_regs - Initialize IOA registers
9522  * @ioa_cfg:    ioa config struct
9523  *
9524  * Return value:
9525  *      none
9526  **/
9527 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9528 {
9529         const struct ipr_interrupt_offsets *p;
9530         struct ipr_interrupts *t;
9531         void __iomem *base;
9532
9533         p = &ioa_cfg->chip_cfg->regs;
9534         t = &ioa_cfg->regs;
9535         base = ioa_cfg->hdw_dma_regs;
9536
9537         t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9538         t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9539         t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9540         t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9541         t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9542         t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9543         t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9544         t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9545         t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9546         t->ioarrin_reg = base + p->ioarrin_reg;
9547         t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9548         t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9549         t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9550         t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9551         t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9552         t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9553
9554         if (ioa_cfg->sis64) {
9555                 t->init_feedback_reg = base + p->init_feedback_reg;
9556                 t->dump_addr_reg = base + p->dump_addr_reg;
9557                 t->dump_data_reg = base + p->dump_data_reg;
9558                 t->endian_swap_reg = base + p->endian_swap_reg;
9559         }
9560 }
9561
9562 /**
9563  * ipr_init_ioa_cfg - Initialize IOA config struct
9564  * @ioa_cfg:    ioa config struct
9565  * @host:               scsi host struct
9566  * @pdev:               PCI dev struct
9567  *
9568  * Return value:
9569  *      none
9570  **/
9571 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9572                              struct Scsi_Host *host, struct pci_dev *pdev)
9573 {
9574         int i;
9575
9576         ioa_cfg->host = host;
9577         ioa_cfg->pdev = pdev;
9578         ioa_cfg->log_level = ipr_log_level;
9579         ioa_cfg->doorbell = IPR_DOORBELL;
9580         sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9581         sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9582         sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9583         sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9584         sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9585         sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9586
9587         INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9588         INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9589         INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9590         INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9591         INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9592         init_waitqueue_head(&ioa_cfg->reset_wait_q);
9593         init_waitqueue_head(&ioa_cfg->msi_wait_q);
9594         init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9595         ioa_cfg->sdt_state = INACTIVE;
9596
9597         ipr_initialize_bus_attr(ioa_cfg);
9598         ioa_cfg->max_devs_supported = ipr_max_devs;
9599
9600         if (ioa_cfg->sis64) {
9601                 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9602                 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9603                 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9604                         ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9605                 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9606                                            + ((sizeof(struct ipr_config_table_entry64)
9607                                                * ioa_cfg->max_devs_supported)));
9608         } else {
9609                 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9610                 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9611                 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9612                         ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9613                 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9614                                            + ((sizeof(struct ipr_config_table_entry)
9615                                                * ioa_cfg->max_devs_supported)));
9616         }
9617
9618         host->max_channel = IPR_VSET_BUS;
9619         host->unique_id = host->host_no;
9620         host->max_cmd_len = IPR_MAX_CDB_LEN;
9621         host->can_queue = ioa_cfg->max_cmds;
9622         pci_set_drvdata(pdev, ioa_cfg);
9623
9624         for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9625                 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9626                 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9627                 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9628                 if (i == 0)
9629                         ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9630                 else
9631                         ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9632         }
9633 }
9634
9635 /**
9636  * ipr_get_chip_info - Find adapter chip information
9637  * @dev_id:             PCI device id struct
9638  *
9639  * Return value:
9640  *      ptr to chip information on success / NULL on failure
9641  **/
9642 static const struct ipr_chip_t *
9643 ipr_get_chip_info(const struct pci_device_id *dev_id)
9644 {
9645         int i;
9646
9647         for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9648                 if (ipr_chip[i].vendor == dev_id->vendor &&
9649                     ipr_chip[i].device == dev_id->device)
9650                         return &ipr_chip[i];
9651         return NULL;
9652 }
9653
9654 /**
9655  * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
9656  *                                              during probe time
9657  * @ioa_cfg:    ioa config struct
9658  *
9659  * Return value:
9660  *      None
9661  **/
9662 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
9663 {
9664         struct pci_dev *pdev = ioa_cfg->pdev;
9665
9666         if (pci_channel_offline(pdev)) {
9667                 wait_event_timeout(ioa_cfg->eeh_wait_q,
9668                                    !pci_channel_offline(pdev),
9669                                    IPR_PCI_ERROR_RECOVERY_TIMEOUT);
9670                 pci_restore_state(pdev);
9671         }
9672 }
9673
9674 static int ipr_enable_msix(struct ipr_ioa_cfg *ioa_cfg)
9675 {
9676         struct msix_entry entries[IPR_MAX_MSIX_VECTORS];
9677         int i, vectors;
9678
9679         for (i = 0; i < ARRAY_SIZE(entries); ++i)
9680                 entries[i].entry = i;
9681
9682         vectors = pci_enable_msix_range(ioa_cfg->pdev,
9683                                         entries, 1, ipr_number_of_msix);
9684         if (vectors < 0) {
9685                 ipr_wait_for_pci_err_recovery(ioa_cfg);
9686                 return vectors;
9687         }
9688
9689         for (i = 0; i < vectors; i++)
9690                 ioa_cfg->vectors_info[i].vec = entries[i].vector;
9691         ioa_cfg->nvectors = vectors;
9692
9693         return 0;
9694 }
9695
9696 static int ipr_enable_msi(struct ipr_ioa_cfg *ioa_cfg)
9697 {
9698         int i, vectors;
9699
9700         vectors = pci_enable_msi_range(ioa_cfg->pdev, 1, ipr_number_of_msix);
9701         if (vectors < 0) {
9702                 ipr_wait_for_pci_err_recovery(ioa_cfg);
9703                 return vectors;
9704         }
9705
9706         for (i = 0; i < vectors; i++)
9707                 ioa_cfg->vectors_info[i].vec = ioa_cfg->pdev->irq + i;
9708         ioa_cfg->nvectors = vectors;
9709
9710         return 0;
9711 }
9712
9713 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
9714 {
9715         int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
9716
9717         for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
9718                 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
9719                          "host%d-%d", ioa_cfg->host->host_no, vec_idx);
9720                 ioa_cfg->vectors_info[vec_idx].
9721                         desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
9722         }
9723 }
9724
9725 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg)
9726 {
9727         int i, rc;
9728
9729         for (i = 1; i < ioa_cfg->nvectors; i++) {
9730                 rc = request_irq(ioa_cfg->vectors_info[i].vec,
9731                         ipr_isr_mhrrq,
9732                         0,
9733                         ioa_cfg->vectors_info[i].desc,
9734                         &ioa_cfg->hrrq[i]);
9735                 if (rc) {
9736                         while (--i >= 0)
9737                                 free_irq(ioa_cfg->vectors_info[i].vec,
9738                                         &ioa_cfg->hrrq[i]);
9739                         return rc;
9740                 }
9741         }
9742         return 0;
9743 }
9744
9745 /**
9746  * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
9747  * @pdev:               PCI device struct
9748  *
9749  * Description: Simply set the msi_received flag to 1 indicating that
9750  * Message Signaled Interrupts are supported.
9751  *
9752  * Return value:
9753  *      0 on success / non-zero on failure
9754  **/
9755 static irqreturn_t ipr_test_intr(int irq, void *devp)
9756 {
9757         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
9758         unsigned long lock_flags = 0;
9759         irqreturn_t rc = IRQ_HANDLED;
9760
9761         dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
9762         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9763
9764         ioa_cfg->msi_received = 1;
9765         wake_up(&ioa_cfg->msi_wait_q);
9766
9767         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9768         return rc;
9769 }
9770
9771 /**
9772  * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
9773  * @pdev:               PCI device struct
9774  *
9775  * Description: The return value from pci_enable_msi_range() can not always be
9776  * trusted.  This routine sets up and initiates a test interrupt to determine
9777  * if the interrupt is received via the ipr_test_intr() service routine.
9778  * If the tests fails, the driver will fall back to LSI.
9779  *
9780  * Return value:
9781  *      0 on success / non-zero on failure
9782  **/
9783 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
9784 {
9785         int rc;
9786         volatile u32 int_reg;
9787         unsigned long lock_flags = 0;
9788
9789         ENTER;
9790
9791         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9792         init_waitqueue_head(&ioa_cfg->msi_wait_q);
9793         ioa_cfg->msi_received = 0;
9794         ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9795         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
9796         int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
9797         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9798
9799         if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9800                 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9801         else
9802                 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9803         if (rc) {
9804                 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
9805                 return rc;
9806         } else if (ipr_debug)
9807                 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
9808
9809         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
9810         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
9811         wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
9812         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9813         ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9814
9815         if (!ioa_cfg->msi_received) {
9816                 /* MSI test failed */
9817                 dev_info(&pdev->dev, "MSI test failed.  Falling back to LSI.\n");
9818                 rc = -EOPNOTSUPP;
9819         } else if (ipr_debug)
9820                 dev_info(&pdev->dev, "MSI test succeeded.\n");
9821
9822         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9823
9824         if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9825                 free_irq(ioa_cfg->vectors_info[0].vec, ioa_cfg);
9826         else
9827                 free_irq(pdev->irq, ioa_cfg);
9828
9829         LEAVE;
9830
9831         return rc;
9832 }
9833
9834  /* ipr_probe_ioa - Allocates memory and does first stage of initialization
9835  * @pdev:               PCI device struct
9836  * @dev_id:             PCI device id struct
9837  *
9838  * Return value:
9839  *      0 on success / non-zero on failure
9840  **/
9841 static int ipr_probe_ioa(struct pci_dev *pdev,
9842                          const struct pci_device_id *dev_id)
9843 {
9844         struct ipr_ioa_cfg *ioa_cfg;
9845         struct Scsi_Host *host;
9846         unsigned long ipr_regs_pci;
9847         void __iomem *ipr_regs;
9848         int rc = PCIBIOS_SUCCESSFUL;
9849         volatile u32 mask, uproc, interrupts;
9850         unsigned long lock_flags, driver_lock_flags;
9851
9852         ENTER;
9853
9854         dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
9855         host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
9856
9857         if (!host) {
9858                 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
9859                 rc = -ENOMEM;
9860                 goto out;
9861         }
9862
9863         ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
9864         memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
9865         ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
9866
9867         ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
9868
9869         if (!ioa_cfg->ipr_chip) {
9870                 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
9871                         dev_id->vendor, dev_id->device);
9872                 goto out_scsi_host_put;
9873         }
9874
9875         /* set SIS 32 or SIS 64 */
9876         ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
9877         ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
9878         ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
9879         ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
9880
9881         if (ipr_transop_timeout)
9882                 ioa_cfg->transop_timeout = ipr_transop_timeout;
9883         else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
9884                 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
9885         else
9886                 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
9887
9888         ioa_cfg->revid = pdev->revision;
9889
9890         ipr_init_ioa_cfg(ioa_cfg, host, pdev);
9891
9892         ipr_regs_pci = pci_resource_start(pdev, 0);
9893
9894         rc = pci_request_regions(pdev, IPR_NAME);
9895         if (rc < 0) {
9896                 dev_err(&pdev->dev,
9897                         "Couldn't register memory range of registers\n");
9898                 goto out_scsi_host_put;
9899         }
9900
9901         rc = pci_enable_device(pdev);
9902
9903         if (rc || pci_channel_offline(pdev)) {
9904                 if (pci_channel_offline(pdev)) {
9905                         ipr_wait_for_pci_err_recovery(ioa_cfg);
9906                         rc = pci_enable_device(pdev);
9907                 }
9908
9909                 if (rc) {
9910                         dev_err(&pdev->dev, "Cannot enable adapter\n");
9911                         ipr_wait_for_pci_err_recovery(ioa_cfg);
9912                         goto out_release_regions;
9913                 }
9914         }
9915
9916         ipr_regs = pci_ioremap_bar(pdev, 0);
9917
9918         if (!ipr_regs) {
9919                 dev_err(&pdev->dev,
9920                         "Couldn't map memory range of registers\n");
9921                 rc = -ENOMEM;
9922                 goto out_disable;
9923         }
9924
9925         ioa_cfg->hdw_dma_regs = ipr_regs;
9926         ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
9927         ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
9928
9929         ipr_init_regs(ioa_cfg);
9930
9931         if (ioa_cfg->sis64) {
9932                 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9933                 if (rc < 0) {
9934                         dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
9935                         rc = dma_set_mask_and_coherent(&pdev->dev,
9936                                                        DMA_BIT_MASK(32));
9937                 }
9938         } else
9939                 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9940
9941         if (rc < 0) {
9942                 dev_err(&pdev->dev, "Failed to set DMA mask\n");
9943                 goto cleanup_nomem;
9944         }
9945
9946         rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
9947                                    ioa_cfg->chip_cfg->cache_line_size);
9948
9949         if (rc != PCIBIOS_SUCCESSFUL) {
9950                 dev_err(&pdev->dev, "Write of cache line size failed\n");
9951                 ipr_wait_for_pci_err_recovery(ioa_cfg);
9952                 rc = -EIO;
9953                 goto cleanup_nomem;
9954         }
9955
9956         /* Issue MMIO read to ensure card is not in EEH */
9957         interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
9958         ipr_wait_for_pci_err_recovery(ioa_cfg);
9959
9960         if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
9961                 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
9962                         IPR_MAX_MSIX_VECTORS);
9963                 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
9964         }
9965
9966         if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
9967                         ipr_enable_msix(ioa_cfg) == 0)
9968                 ioa_cfg->intr_flag = IPR_USE_MSIX;
9969         else if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
9970                         ipr_enable_msi(ioa_cfg) == 0)
9971                 ioa_cfg->intr_flag = IPR_USE_MSI;
9972         else {
9973                 ioa_cfg->intr_flag = IPR_USE_LSI;
9974                 ioa_cfg->nvectors = 1;
9975                 dev_info(&pdev->dev, "Cannot enable MSI.\n");
9976         }
9977
9978         pci_set_master(pdev);
9979
9980         if (pci_channel_offline(pdev)) {
9981                 ipr_wait_for_pci_err_recovery(ioa_cfg);
9982                 pci_set_master(pdev);
9983                 if (pci_channel_offline(pdev)) {
9984                         rc = -EIO;
9985                         goto out_msi_disable;
9986                 }
9987         }
9988
9989         if (ioa_cfg->intr_flag == IPR_USE_MSI ||
9990             ioa_cfg->intr_flag == IPR_USE_MSIX) {
9991                 rc = ipr_test_msi(ioa_cfg, pdev);
9992                 if (rc == -EOPNOTSUPP) {
9993                         ipr_wait_for_pci_err_recovery(ioa_cfg);
9994                         if (ioa_cfg->intr_flag == IPR_USE_MSI) {
9995                                 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
9996                                 pci_disable_msi(pdev);
9997                          } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
9998                                 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
9999                                 pci_disable_msix(pdev);
10000                         }
10001
10002                         ioa_cfg->intr_flag = IPR_USE_LSI;
10003                         ioa_cfg->nvectors = 1;
10004                 }
10005                 else if (rc)
10006                         goto out_msi_disable;
10007                 else {
10008                         if (ioa_cfg->intr_flag == IPR_USE_MSI)
10009                                 dev_info(&pdev->dev,
10010                                         "Request for %d MSIs succeeded with starting IRQ: %d\n",
10011                                         ioa_cfg->nvectors, pdev->irq);
10012                         else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10013                                 dev_info(&pdev->dev,
10014                                         "Request for %d MSIXs succeeded.",
10015                                         ioa_cfg->nvectors);
10016                 }
10017         }
10018
10019         ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
10020                                 (unsigned int)num_online_cpus(),
10021                                 (unsigned int)IPR_MAX_HRRQ_NUM);
10022
10023         if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
10024                 goto out_msi_disable;
10025
10026         if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
10027                 goto out_msi_disable;
10028
10029         rc = ipr_alloc_mem(ioa_cfg);
10030         if (rc < 0) {
10031                 dev_err(&pdev->dev,
10032                         "Couldn't allocate enough memory for device driver!\n");
10033                 goto out_msi_disable;
10034         }
10035
10036         /* Save away PCI config space for use following IOA reset */
10037         rc = pci_save_state(pdev);
10038
10039         if (rc != PCIBIOS_SUCCESSFUL) {
10040                 dev_err(&pdev->dev, "Failed to save PCI config space\n");
10041                 rc = -EIO;
10042                 goto cleanup_nolog;
10043         }
10044
10045         /*
10046          * If HRRQ updated interrupt is not masked, or reset alert is set,
10047          * the card is in an unknown state and needs a hard reset
10048          */
10049         mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
10050         interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
10051         uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
10052         if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
10053                 ioa_cfg->needs_hard_reset = 1;
10054         if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
10055                 ioa_cfg->needs_hard_reset = 1;
10056         if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
10057                 ioa_cfg->ioa_unit_checked = 1;
10058
10059         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10060         ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10061         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10062
10063         if (ioa_cfg->intr_flag == IPR_USE_MSI
10064                         || ioa_cfg->intr_flag == IPR_USE_MSIX) {
10065                 name_msi_vectors(ioa_cfg);
10066                 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_isr,
10067                         0,
10068                         ioa_cfg->vectors_info[0].desc,
10069                         &ioa_cfg->hrrq[0]);
10070                 if (!rc)
10071                         rc = ipr_request_other_msi_irqs(ioa_cfg);
10072         } else {
10073                 rc = request_irq(pdev->irq, ipr_isr,
10074                          IRQF_SHARED,
10075                          IPR_NAME, &ioa_cfg->hrrq[0]);
10076         }
10077         if (rc) {
10078                 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
10079                         pdev->irq, rc);
10080                 goto cleanup_nolog;
10081         }
10082
10083         if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
10084             (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
10085                 ioa_cfg->needs_warm_reset = 1;
10086                 ioa_cfg->reset = ipr_reset_slot_reset;
10087
10088                 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
10089                                                                 WQ_MEM_RECLAIM, host->host_no);
10090
10091                 if (!ioa_cfg->reset_work_q) {
10092                         dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
10093                         goto out_free_irq;
10094                 }
10095         } else
10096                 ioa_cfg->reset = ipr_reset_start_bist;
10097
10098         spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10099         list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
10100         spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10101
10102         LEAVE;
10103 out:
10104         return rc;
10105
10106 out_free_irq:
10107         ipr_free_irqs(ioa_cfg);
10108 cleanup_nolog:
10109         ipr_free_mem(ioa_cfg);
10110 out_msi_disable:
10111         ipr_wait_for_pci_err_recovery(ioa_cfg);
10112         if (ioa_cfg->intr_flag == IPR_USE_MSI)
10113                 pci_disable_msi(pdev);
10114         else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10115                 pci_disable_msix(pdev);
10116 cleanup_nomem:
10117         iounmap(ipr_regs);
10118 out_disable:
10119         pci_disable_device(pdev);
10120 out_release_regions:
10121         pci_release_regions(pdev);
10122 out_scsi_host_put:
10123         scsi_host_put(host);
10124         goto out;
10125 }
10126
10127 /**
10128  * ipr_initiate_ioa_bringdown - Bring down an adapter
10129  * @ioa_cfg:            ioa config struct
10130  * @shutdown_type:      shutdown type
10131  *
10132  * Description: This function will initiate bringing down the adapter.
10133  * This consists of issuing an IOA shutdown to the adapter
10134  * to flush the cache, and running BIST.
10135  * If the caller needs to wait on the completion of the reset,
10136  * the caller must sleep on the reset_wait_q.
10137  *
10138  * Return value:
10139  *      none
10140  **/
10141 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
10142                                        enum ipr_shutdown_type shutdown_type)
10143 {
10144         ENTER;
10145         if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
10146                 ioa_cfg->sdt_state = ABORT_DUMP;
10147         ioa_cfg->reset_retries = 0;
10148         ioa_cfg->in_ioa_bringdown = 1;
10149         ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
10150         LEAVE;
10151 }
10152
10153 /**
10154  * __ipr_remove - Remove a single adapter
10155  * @pdev:       pci device struct
10156  *
10157  * Adapter hot plug remove entry point.
10158  *
10159  * Return value:
10160  *      none
10161  **/
10162 static void __ipr_remove(struct pci_dev *pdev)
10163 {
10164         unsigned long host_lock_flags = 0;
10165         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10166         int i;
10167         unsigned long driver_lock_flags;
10168         ENTER;
10169
10170         spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10171         while (ioa_cfg->in_reset_reload) {
10172                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10173                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10174                 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10175         }
10176
10177         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
10178                 spin_lock(&ioa_cfg->hrrq[i]._lock);
10179                 ioa_cfg->hrrq[i].removing_ioa = 1;
10180                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
10181         }
10182         wmb();
10183         ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10184
10185         spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10186         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10187         flush_work(&ioa_cfg->work_q);
10188         if (ioa_cfg->reset_work_q)
10189                 flush_workqueue(ioa_cfg->reset_work_q);
10190         INIT_LIST_HEAD(&ioa_cfg->used_res_q);
10191         spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10192
10193         spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10194         list_del(&ioa_cfg->queue);
10195         spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10196
10197         if (ioa_cfg->sdt_state == ABORT_DUMP)
10198                 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
10199         spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10200
10201         ipr_free_all_resources(ioa_cfg);
10202
10203         LEAVE;
10204 }
10205
10206 /**
10207  * ipr_remove - IOA hot plug remove entry point
10208  * @pdev:       pci device struct
10209  *
10210  * Adapter hot plug remove entry point.
10211  *
10212  * Return value:
10213  *      none
10214  **/
10215 static void ipr_remove(struct pci_dev *pdev)
10216 {
10217         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10218
10219         ENTER;
10220
10221         ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10222                               &ipr_trace_attr);
10223         ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10224                              &ipr_dump_attr);
10225         scsi_remove_host(ioa_cfg->host);
10226
10227         __ipr_remove(pdev);
10228
10229         LEAVE;
10230 }
10231
10232 /**
10233  * ipr_probe - Adapter hot plug add entry point
10234  *
10235  * Return value:
10236  *      0 on success / non-zero on failure
10237  **/
10238 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
10239 {
10240         struct ipr_ioa_cfg *ioa_cfg;
10241         int rc, i;
10242
10243         rc = ipr_probe_ioa(pdev, dev_id);
10244
10245         if (rc)
10246                 return rc;
10247
10248         ioa_cfg = pci_get_drvdata(pdev);
10249         rc = ipr_probe_ioa_part2(ioa_cfg);
10250
10251         if (rc) {
10252                 __ipr_remove(pdev);
10253                 return rc;
10254         }
10255
10256         rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
10257
10258         if (rc) {
10259                 __ipr_remove(pdev);
10260                 return rc;
10261         }
10262
10263         rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
10264                                    &ipr_trace_attr);
10265
10266         if (rc) {
10267                 scsi_remove_host(ioa_cfg->host);
10268                 __ipr_remove(pdev);
10269                 return rc;
10270         }
10271
10272         rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
10273                                    &ipr_dump_attr);
10274
10275         if (rc) {
10276                 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10277                                       &ipr_trace_attr);
10278                 scsi_remove_host(ioa_cfg->host);
10279                 __ipr_remove(pdev);
10280                 return rc;
10281         }
10282
10283         scsi_scan_host(ioa_cfg->host);
10284         ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
10285
10286         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10287                 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
10288                         blk_iopoll_init(&ioa_cfg->hrrq[i].iopoll,
10289                                         ioa_cfg->iopoll_weight, ipr_iopoll);
10290                         blk_iopoll_enable(&ioa_cfg->hrrq[i].iopoll);
10291                 }
10292         }
10293
10294         schedule_work(&ioa_cfg->work_q);
10295         return 0;
10296 }
10297
10298 /**
10299  * ipr_shutdown - Shutdown handler.
10300  * @pdev:       pci device struct
10301  *
10302  * This function is invoked upon system shutdown/reboot. It will issue
10303  * an adapter shutdown to the adapter to flush the write cache.
10304  *
10305  * Return value:
10306  *      none
10307  **/
10308 static void ipr_shutdown(struct pci_dev *pdev)
10309 {
10310         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10311         unsigned long lock_flags = 0;
10312         enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
10313         int i;
10314
10315         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10316         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10317                 ioa_cfg->iopoll_weight = 0;
10318                 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10319                         blk_iopoll_disable(&ioa_cfg->hrrq[i].iopoll);
10320         }
10321
10322         while (ioa_cfg->in_reset_reload) {
10323                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10324                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10325                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10326         }
10327
10328         if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
10329                 shutdown_type = IPR_SHUTDOWN_QUIESCE;
10330
10331         ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
10332         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10333         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10334         if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
10335                 ipr_free_irqs(ioa_cfg);
10336                 pci_disable_device(ioa_cfg->pdev);
10337         }
10338 }
10339
10340 static struct pci_device_id ipr_pci_table[] = {
10341         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10342                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10343         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10344                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10345         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10346                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10347         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10348                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10349         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10350                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10351         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10352                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10353         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10354                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10355         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10356                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10357                 IPR_USE_LONG_TRANSOP_TIMEOUT },
10358         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10359               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10360         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10361               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10362               IPR_USE_LONG_TRANSOP_TIMEOUT },
10363         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10364               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10365               IPR_USE_LONG_TRANSOP_TIMEOUT },
10366         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10367               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10368         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10369               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10370               IPR_USE_LONG_TRANSOP_TIMEOUT},
10371         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10372               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10373               IPR_USE_LONG_TRANSOP_TIMEOUT },
10374         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10375               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10376               IPR_USE_LONG_TRANSOP_TIMEOUT },
10377         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10378               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10379         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10380               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10381         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10382               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10383               IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10384         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10385                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10386         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10387                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10388         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10389                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10390                 IPR_USE_LONG_TRANSOP_TIMEOUT },
10391         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10392                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10393                 IPR_USE_LONG_TRANSOP_TIMEOUT },
10394         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10395                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10396         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10397                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10398         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10399                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10400         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10401                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10402         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10403                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10404         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10405                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10406         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10407                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10408         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10409                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10410         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10411                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10412         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10413                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10414         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10415                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10416         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10417                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10418         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10419                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10420         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10421                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10422         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10423                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10424         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10425                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10426         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10427                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10428         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10429                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10430         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10431                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10432         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10433                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10434         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10435                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10436         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10437                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10438         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10439                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10440         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10441                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10442         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10443                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10444         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10445                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10446         { }
10447 };
10448 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10449
10450 static const struct pci_error_handlers ipr_err_handler = {
10451         .error_detected = ipr_pci_error_detected,
10452         .mmio_enabled = ipr_pci_mmio_enabled,
10453         .slot_reset = ipr_pci_slot_reset,
10454 };
10455
10456 static struct pci_driver ipr_driver = {
10457         .name = IPR_NAME,
10458         .id_table = ipr_pci_table,
10459         .probe = ipr_probe,
10460         .remove = ipr_remove,
10461         .shutdown = ipr_shutdown,
10462         .err_handler = &ipr_err_handler,
10463 };
10464
10465 /**
10466  * ipr_halt_done - Shutdown prepare completion
10467  *
10468  * Return value:
10469  *      none
10470  **/
10471 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10472 {
10473         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10474 }
10475
10476 /**
10477  * ipr_halt - Issue shutdown prepare to all adapters
10478  *
10479  * Return value:
10480  *      NOTIFY_OK on success / NOTIFY_DONE on failure
10481  **/
10482 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10483 {
10484         struct ipr_cmnd *ipr_cmd;
10485         struct ipr_ioa_cfg *ioa_cfg;
10486         unsigned long flags = 0, driver_lock_flags;
10487
10488         if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10489                 return NOTIFY_DONE;
10490
10491         spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10492
10493         list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10494                 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10495                 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10496                     (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10497                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10498                         continue;
10499                 }
10500
10501                 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10502                 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10503                 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10504                 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10505                 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10506
10507                 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10508                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10509         }
10510         spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10511
10512         return NOTIFY_OK;
10513 }
10514
10515 static struct notifier_block ipr_notifier = {
10516         ipr_halt, NULL, 0
10517 };
10518
10519 /**
10520  * ipr_init - Module entry point
10521  *
10522  * Return value:
10523  *      0 on success / negative value on failure
10524  **/
10525 static int __init ipr_init(void)
10526 {
10527         ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10528                  IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10529
10530         register_reboot_notifier(&ipr_notifier);
10531         return pci_register_driver(&ipr_driver);
10532 }
10533
10534 /**
10535  * ipr_exit - Module unload
10536  *
10537  * Module unload entry point.
10538  *
10539  * Return value:
10540  *      none
10541  **/
10542 static void __exit ipr_exit(void)
10543 {
10544         unregister_reboot_notifier(&ipr_notifier);
10545         pci_unregister_driver(&ipr_driver);
10546 }
10547
10548 module_init(ipr_init);
10549 module_exit(ipr_exit);