2 * ipr.c -- driver for IBM Power Linux RAID adapters
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
6 * Copyright (C) 2003, 2004 IBM Corporation
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.
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.
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
27 * This driver is used to control the following SCSI adapters:
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
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
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
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
50 * - Tagged command queuing
51 * - Adapter microcode download
53 * - SCSI device hot plug
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/ioport.h>
63 #include <linux/delay.h>
64 #include <linux/pci.h>
65 #include <linux/wait.h>
66 #include <linux/spinlock.h>
67 #include <linux/sched.h>
68 #include <linux/interrupt.h>
69 #include <linux/blkdev.h>
70 #include <linux/firmware.h>
71 #include <linux/module.h>
72 #include <linux/moduleparam.h>
73 #include <linux/libata.h>
76 #include <asm/processor.h>
77 #include <scsi/scsi.h>
78 #include <scsi/scsi_host.h>
79 #include <scsi/scsi_tcq.h>
80 #include <scsi/scsi_eh.h>
81 #include <scsi/scsi_cmnd.h>
87 static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
88 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
89 static unsigned int ipr_max_speed = 1;
90 static int ipr_testmode = 0;
91 static unsigned int ipr_fastfail = 0;
92 static unsigned int ipr_transop_timeout = 0;
93 static unsigned int ipr_enable_cache = 1;
94 static unsigned int ipr_debug = 0;
95 static DEFINE_SPINLOCK(ipr_driver_lock);
97 /* This table describes the differences between DMA controller chips */
98 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
99 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
101 .cache_line_size = 0x20,
103 .set_interrupt_mask_reg = 0x0022C,
104 .clr_interrupt_mask_reg = 0x00230,
105 .sense_interrupt_mask_reg = 0x0022C,
106 .clr_interrupt_reg = 0x00228,
107 .sense_interrupt_reg = 0x00224,
108 .ioarrin_reg = 0x00404,
109 .sense_uproc_interrupt_reg = 0x00214,
110 .set_uproc_interrupt_reg = 0x00214,
111 .clr_uproc_interrupt_reg = 0x00218
114 { /* Snipe and Scamp */
116 .cache_line_size = 0x20,
118 .set_interrupt_mask_reg = 0x00288,
119 .clr_interrupt_mask_reg = 0x0028C,
120 .sense_interrupt_mask_reg = 0x00288,
121 .clr_interrupt_reg = 0x00284,
122 .sense_interrupt_reg = 0x00280,
123 .ioarrin_reg = 0x00504,
124 .sense_uproc_interrupt_reg = 0x00290,
125 .set_uproc_interrupt_reg = 0x00290,
126 .clr_uproc_interrupt_reg = 0x00294
131 static const struct ipr_chip_t ipr_chip[] = {
132 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
133 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
134 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
138 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
141 static int ipr_max_bus_speeds [] = {
142 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
145 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
146 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
147 module_param_named(max_speed, ipr_max_speed, uint, 0);
148 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
149 module_param_named(log_level, ipr_log_level, uint, 0);
150 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
151 module_param_named(testmode, ipr_testmode, int, 0);
152 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
153 module_param_named(fastfail, ipr_fastfail, int, 0);
154 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
155 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
156 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
157 module_param_named(enable_cache, ipr_enable_cache, int, 0);
158 MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
159 module_param_named(debug, ipr_debug, int, 0);
160 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
161 MODULE_LICENSE("GPL");
162 MODULE_VERSION(IPR_DRIVER_VERSION);
164 /* A constant array of IOASCs/URCs/Error Messages */
166 struct ipr_error_table_t ipr_error_table[] = {
167 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
168 "8155: An unknown error was received"},
170 "Soft underlength error"},
172 "Command to be cancelled not found"},
174 "Qualified success"},
175 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
176 "FFFE: Soft device bus error recovered by the IOA"},
177 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
178 "4101: Soft device bus fabric error"},
179 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
180 "FFF9: Device sector reassign successful"},
181 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
182 "FFF7: Media error recovered by device rewrite procedures"},
183 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
184 "7001: IOA sector reassignment successful"},
185 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
186 "FFF9: Soft media error. Sector reassignment recommended"},
187 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
188 "FFF7: Media error recovered by IOA rewrite procedures"},
189 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
190 "FF3D: Soft PCI bus error recovered by the IOA"},
191 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
192 "FFF6: Device hardware error recovered by the IOA"},
193 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
194 "FFF6: Device hardware error recovered by the device"},
195 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
196 "FF3D: Soft IOA error recovered by the IOA"},
197 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
198 "FFFA: Undefined device response recovered by the IOA"},
199 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
200 "FFF6: Device bus error, message or command phase"},
201 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
202 "FFFE: Task Management Function failed"},
203 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
204 "FFF6: Failure prediction threshold exceeded"},
205 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
206 "8009: Impending cache battery pack failure"},
208 "34FF: Disk device format in progress"},
210 "Synchronization required"},
212 "No ready, IOA shutdown"},
214 "Not ready, IOA has been shutdown"},
215 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
216 "3020: Storage subsystem configuration error"},
218 "FFF5: Medium error, data unreadable, recommend reassign"},
220 "7000: Medium error, data unreadable, do not reassign"},
221 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
222 "FFF3: Disk media format bad"},
223 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
224 "3002: Addressed device failed to respond to selection"},
225 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
226 "3100: Device bus error"},
227 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
228 "3109: IOA timed out a device command"},
230 "3120: SCSI bus is not operational"},
231 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
232 "4100: Hard device bus fabric error"},
233 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
234 "9000: IOA reserved area data check"},
235 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
236 "9001: IOA reserved area invalid data pattern"},
237 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
238 "9002: IOA reserved area LRC error"},
239 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
240 "102E: Out of alternate sectors for disk storage"},
241 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
242 "FFF4: Data transfer underlength error"},
243 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
244 "FFF4: Data transfer overlength error"},
245 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
246 "3400: Logical unit failure"},
247 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
248 "FFF4: Device microcode is corrupt"},
249 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
250 "8150: PCI bus error"},
252 "Unsupported device bus message received"},
253 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
254 "FFF4: Disk device problem"},
255 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
256 "8150: Permanent IOA failure"},
257 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
258 "3010: Disk device returned wrong response to IOA"},
259 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
260 "8151: IOA microcode error"},
262 "Device bus status error"},
263 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
264 "8157: IOA error requiring IOA reset to recover"},
266 "ATA device status error"},
268 "Message reject received from the device"},
269 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
270 "8008: A permanent cache battery pack failure occurred"},
271 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
272 "9090: Disk unit has been modified after the last known status"},
273 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
274 "9081: IOA detected device error"},
275 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
276 "9082: IOA detected device error"},
277 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
278 "3110: Device bus error, message or command phase"},
279 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
280 "3110: SAS Command / Task Management Function failed"},
281 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
282 "9091: Incorrect hardware configuration change has been detected"},
283 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
284 "9073: Invalid multi-adapter configuration"},
285 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
286 "4010: Incorrect connection between cascaded expanders"},
287 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
288 "4020: Connections exceed IOA design limits"},
289 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
290 "4030: Incorrect multipath connection"},
291 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
292 "4110: Unsupported enclosure function"},
293 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
294 "FFF4: Command to logical unit failed"},
296 "Illegal request, invalid request type or request packet"},
298 "Illegal request, invalid resource handle"},
300 "Illegal request, commands not allowed to this device"},
302 "Illegal request, command not allowed to a secondary adapter"},
304 "Illegal request, invalid field in parameter list"},
306 "Illegal request, parameter not supported"},
308 "Illegal request, parameter value invalid"},
310 "Illegal request, command sequence error"},
312 "Illegal request, dual adapter support not enabled"},
313 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
314 "9031: Array protection temporarily suspended, protection resuming"},
315 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
316 "9040: Array protection temporarily suspended, protection resuming"},
317 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
318 "3140: Device bus not ready to ready transition"},
319 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
320 "FFFB: SCSI bus was reset"},
322 "FFFE: SCSI bus transition to single ended"},
324 "FFFE: SCSI bus transition to LVD"},
325 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
326 "FFFB: SCSI bus was reset by another initiator"},
327 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
328 "3029: A device replacement has occurred"},
329 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
330 "9051: IOA cache data exists for a missing or failed device"},
331 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
332 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
333 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
334 "9025: Disk unit is not supported at its physical location"},
335 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
336 "3020: IOA detected a SCSI bus configuration error"},
337 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
338 "3150: SCSI bus configuration error"},
339 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
340 "9074: Asymmetric advanced function disk configuration"},
341 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
342 "4040: Incomplete multipath connection between IOA and enclosure"},
343 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
344 "4041: Incomplete multipath connection between enclosure and device"},
345 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
346 "9075: Incomplete multipath connection between IOA and remote IOA"},
347 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
348 "9076: Configuration error, missing remote IOA"},
349 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
350 "4050: Enclosure does not support a required multipath function"},
351 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
352 "9041: Array protection temporarily suspended"},
353 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
354 "9042: Corrupt array parity detected on specified device"},
355 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
356 "9030: Array no longer protected due to missing or failed disk unit"},
357 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
358 "9071: Link operational transition"},
359 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
360 "9072: Link not operational transition"},
361 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
362 "9032: Array exposed but still protected"},
363 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
364 "70DD: Device forced failed by disrupt device command"},
365 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
366 "4061: Multipath redundancy level got better"},
367 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
368 "4060: Multipath redundancy level got worse"},
370 "Failure due to other device"},
371 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
372 "9008: IOA does not support functions expected by devices"},
373 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
374 "9010: Cache data associated with attached devices cannot be found"},
375 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
376 "9011: Cache data belongs to devices other than those attached"},
377 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
378 "9020: Array missing 2 or more devices with only 1 device present"},
379 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
380 "9021: Array missing 2 or more devices with 2 or more devices present"},
381 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
382 "9022: Exposed array is missing a required device"},
383 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
384 "9023: Array member(s) not at required physical locations"},
385 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
386 "9024: Array not functional due to present hardware configuration"},
387 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
388 "9026: Array not functional due to present hardware configuration"},
389 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
390 "9027: Array is missing a device and parity is out of sync"},
391 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
392 "9028: Maximum number of arrays already exist"},
393 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
394 "9050: Required cache data cannot be located for a disk unit"},
395 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
396 "9052: Cache data exists for a device that has been modified"},
397 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
398 "9054: IOA resources not available due to previous problems"},
399 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
400 "9092: Disk unit requires initialization before use"},
401 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
402 "9029: Incorrect hardware configuration change has been detected"},
403 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
404 "9060: One or more disk pairs are missing from an array"},
405 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
406 "9061: One or more disks are missing from an array"},
407 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
408 "9062: One or more disks are missing from an array"},
409 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
410 "9063: Maximum number of functional arrays has been exceeded"},
412 "Aborted command, invalid descriptor"},
414 "Command terminated by host"}
417 static const struct ipr_ses_table_entry ipr_ses_table[] = {
418 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
419 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
420 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
421 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
422 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
423 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
424 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
425 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
426 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
427 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
428 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
429 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
430 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
434 * Function Prototypes
436 static int ipr_reset_alert(struct ipr_cmnd *);
437 static void ipr_process_ccn(struct ipr_cmnd *);
438 static void ipr_process_error(struct ipr_cmnd *);
439 static void ipr_reset_ioa_job(struct ipr_cmnd *);
440 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
441 enum ipr_shutdown_type);
443 #ifdef CONFIG_SCSI_IPR_TRACE
445 * ipr_trc_hook - Add a trace entry to the driver trace
446 * @ipr_cmd: ipr command struct
448 * @add_data: additional data
453 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
454 u8 type, u32 add_data)
456 struct ipr_trace_entry *trace_entry;
457 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
459 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
460 trace_entry->time = jiffies;
461 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
462 trace_entry->type = type;
463 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
464 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
465 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
466 trace_entry->u.add_data = add_data;
469 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
473 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
474 * @ipr_cmd: ipr command struct
479 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
481 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
482 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
483 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
485 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
486 ioarcb->write_data_transfer_length = 0;
487 ioarcb->read_data_transfer_length = 0;
488 ioarcb->write_ioadl_len = 0;
489 ioarcb->read_ioadl_len = 0;
490 ioarcb->write_ioadl_addr =
491 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
492 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
494 ioasa->residual_data_len = 0;
495 ioasa->u.gata.status = 0;
497 ipr_cmd->scsi_cmd = NULL;
499 ipr_cmd->sense_buffer[0] = 0;
500 ipr_cmd->dma_use_sg = 0;
504 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
505 * @ipr_cmd: ipr command struct
510 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
512 ipr_reinit_ipr_cmnd(ipr_cmd);
513 ipr_cmd->u.scratch = 0;
514 ipr_cmd->sibling = NULL;
515 init_timer(&ipr_cmd->timer);
519 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
520 * @ioa_cfg: ioa config struct
523 * pointer to ipr command struct
526 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
528 struct ipr_cmnd *ipr_cmd;
530 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
531 list_del(&ipr_cmd->queue);
532 ipr_init_ipr_cmnd(ipr_cmd);
538 * ipr_unmap_sglist - Unmap scatterlist if mapped
539 * @ioa_cfg: ioa config struct
540 * @ipr_cmd: ipr command struct
545 static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
546 struct ipr_cmnd *ipr_cmd)
548 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
550 if (ipr_cmd->dma_use_sg) {
551 if (scsi_cmd->use_sg > 0) {
552 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
554 scsi_cmd->sc_data_direction);
556 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
557 scsi_cmd->request_bufflen,
558 scsi_cmd->sc_data_direction);
564 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
565 * @ioa_cfg: ioa config struct
566 * @clr_ints: interrupts to clear
568 * This function masks all interrupts on the adapter, then clears the
569 * interrupts specified in the mask
574 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
577 volatile u32 int_reg;
579 /* Stop new interrupts */
580 ioa_cfg->allow_interrupts = 0;
582 /* Set interrupt mask to stop all new interrupts */
583 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
585 /* Clear any pending interrupts */
586 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
587 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
591 * ipr_save_pcix_cmd_reg - Save PCI-X command register
592 * @ioa_cfg: ioa config struct
595 * 0 on success / -EIO on failure
597 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
599 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
601 if (pcix_cmd_reg == 0)
604 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
605 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
606 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
610 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
615 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
616 * @ioa_cfg: ioa config struct
619 * 0 on success / -EIO on failure
621 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
623 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
626 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
627 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
628 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
637 * ipr_sata_eh_done - done function for aborted SATA commands
638 * @ipr_cmd: ipr command struct
640 * This function is invoked for ops generated to SATA
641 * devices which are being aborted.
646 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
648 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
649 struct ata_queued_cmd *qc = ipr_cmd->qc;
650 struct ipr_sata_port *sata_port = qc->ap->private_data;
652 qc->err_mask |= AC_ERR_OTHER;
653 sata_port->ioasa.status |= ATA_BUSY;
654 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
659 * ipr_scsi_eh_done - mid-layer done function for aborted ops
660 * @ipr_cmd: ipr command struct
662 * This function is invoked by the interrupt handler for
663 * ops generated by the SCSI mid-layer which are being aborted.
668 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
670 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
671 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
673 scsi_cmd->result |= (DID_ERROR << 16);
675 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
676 scsi_cmd->scsi_done(scsi_cmd);
677 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
681 * ipr_fail_all_ops - Fails all outstanding ops.
682 * @ioa_cfg: ioa config struct
684 * This function fails all outstanding ops.
689 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
691 struct ipr_cmnd *ipr_cmd, *temp;
694 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
695 list_del(&ipr_cmd->queue);
697 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
698 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
700 if (ipr_cmd->scsi_cmd)
701 ipr_cmd->done = ipr_scsi_eh_done;
702 else if (ipr_cmd->qc)
703 ipr_cmd->done = ipr_sata_eh_done;
705 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
706 del_timer(&ipr_cmd->timer);
707 ipr_cmd->done(ipr_cmd);
714 * ipr_do_req - Send driver initiated requests.
715 * @ipr_cmd: ipr command struct
716 * @done: done function
717 * @timeout_func: timeout function
718 * @timeout: timeout value
720 * This function sends the specified command to the adapter with the
721 * timeout given. The done function is invoked on command completion.
726 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
727 void (*done) (struct ipr_cmnd *),
728 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
730 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
732 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
734 ipr_cmd->done = done;
736 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
737 ipr_cmd->timer.expires = jiffies + timeout;
738 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
740 add_timer(&ipr_cmd->timer);
742 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
745 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
746 ioa_cfg->regs.ioarrin_reg);
750 * ipr_internal_cmd_done - Op done function for an internally generated op.
751 * @ipr_cmd: ipr command struct
753 * This function is the op done function for an internally generated,
754 * blocking op. It simply wakes the sleeping thread.
759 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
761 if (ipr_cmd->sibling)
762 ipr_cmd->sibling = NULL;
764 complete(&ipr_cmd->completion);
768 * ipr_send_blocking_cmd - Send command and sleep on its completion.
769 * @ipr_cmd: ipr command struct
770 * @timeout_func: function to invoke if command times out
776 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
777 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
780 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
782 init_completion(&ipr_cmd->completion);
783 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
785 spin_unlock_irq(ioa_cfg->host->host_lock);
786 wait_for_completion(&ipr_cmd->completion);
787 spin_lock_irq(ioa_cfg->host->host_lock);
791 * ipr_send_hcam - Send an HCAM to the adapter.
792 * @ioa_cfg: ioa config struct
794 * @hostrcb: hostrcb struct
796 * This function will send a Host Controlled Async command to the adapter.
797 * If HCAMs are currently not allowed to be issued to the adapter, it will
798 * place the hostrcb on the free queue.
803 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
804 struct ipr_hostrcb *hostrcb)
806 struct ipr_cmnd *ipr_cmd;
807 struct ipr_ioarcb *ioarcb;
809 if (ioa_cfg->allow_cmds) {
810 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
811 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
812 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
814 ipr_cmd->u.hostrcb = hostrcb;
815 ioarcb = &ipr_cmd->ioarcb;
817 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
818 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
819 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
820 ioarcb->cmd_pkt.cdb[1] = type;
821 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
822 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
824 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
825 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
826 ipr_cmd->ioadl[0].flags_and_data_len =
827 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
828 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
830 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
831 ipr_cmd->done = ipr_process_ccn;
833 ipr_cmd->done = ipr_process_error;
835 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
838 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
839 ioa_cfg->regs.ioarrin_reg);
841 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
846 * ipr_init_res_entry - Initialize a resource entry struct.
847 * @res: resource entry struct
852 static void ipr_init_res_entry(struct ipr_resource_entry *res)
854 res->needs_sync_complete = 0;
857 res->del_from_ml = 0;
858 res->resetting_device = 0;
860 res->sata_port = NULL;
864 * ipr_handle_config_change - Handle a config change from the adapter
865 * @ioa_cfg: ioa config struct
871 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
872 struct ipr_hostrcb *hostrcb)
874 struct ipr_resource_entry *res = NULL;
875 struct ipr_config_table_entry *cfgte;
878 cfgte = &hostrcb->hcam.u.ccn.cfgte;
880 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
881 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
882 sizeof(cfgte->res_addr))) {
889 if (list_empty(&ioa_cfg->free_res_q)) {
890 ipr_send_hcam(ioa_cfg,
891 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
896 res = list_entry(ioa_cfg->free_res_q.next,
897 struct ipr_resource_entry, queue);
899 list_del(&res->queue);
900 ipr_init_res_entry(res);
901 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
904 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
906 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
908 res->del_from_ml = 1;
909 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
910 if (ioa_cfg->allow_ml_add_del)
911 schedule_work(&ioa_cfg->work_q);
913 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
914 } else if (!res->sdev) {
916 if (ioa_cfg->allow_ml_add_del)
917 schedule_work(&ioa_cfg->work_q);
920 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
924 * ipr_process_ccn - Op done function for a CCN.
925 * @ipr_cmd: ipr command struct
927 * This function is the op done function for a configuration
928 * change notification host controlled async from the adapter.
933 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
935 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
936 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
937 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
939 list_del(&hostrcb->queue);
940 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
943 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
944 dev_err(&ioa_cfg->pdev->dev,
945 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
947 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
949 ipr_handle_config_change(ioa_cfg, hostrcb);
954 * ipr_log_vpd - Log the passed VPD to the error log.
955 * @vpd: vendor/product id/sn struct
960 static void ipr_log_vpd(struct ipr_vpd *vpd)
962 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
963 + IPR_SERIAL_NUM_LEN];
965 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
966 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
968 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
969 ipr_err("Vendor/Product ID: %s\n", buffer);
971 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
972 buffer[IPR_SERIAL_NUM_LEN] = '\0';
973 ipr_err(" Serial Number: %s\n", buffer);
977 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
978 * @vpd: vendor/product id/sn/wwn struct
983 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
985 ipr_log_vpd(&vpd->vpd);
986 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
987 be32_to_cpu(vpd->wwid[1]));
991 * ipr_log_enhanced_cache_error - Log a cache error.
992 * @ioa_cfg: ioa config struct
993 * @hostrcb: hostrcb struct
998 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
999 struct ipr_hostrcb *hostrcb)
1001 struct ipr_hostrcb_type_12_error *error =
1002 &hostrcb->hcam.u.error.u.type_12_error;
1004 ipr_err("-----Current Configuration-----\n");
1005 ipr_err("Cache Directory Card Information:\n");
1006 ipr_log_ext_vpd(&error->ioa_vpd);
1007 ipr_err("Adapter Card Information:\n");
1008 ipr_log_ext_vpd(&error->cfc_vpd);
1010 ipr_err("-----Expected Configuration-----\n");
1011 ipr_err("Cache Directory Card Information:\n");
1012 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1013 ipr_err("Adapter Card Information:\n");
1014 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1016 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1017 be32_to_cpu(error->ioa_data[0]),
1018 be32_to_cpu(error->ioa_data[1]),
1019 be32_to_cpu(error->ioa_data[2]));
1023 * ipr_log_cache_error - Log a cache error.
1024 * @ioa_cfg: ioa config struct
1025 * @hostrcb: hostrcb struct
1030 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1031 struct ipr_hostrcb *hostrcb)
1033 struct ipr_hostrcb_type_02_error *error =
1034 &hostrcb->hcam.u.error.u.type_02_error;
1036 ipr_err("-----Current Configuration-----\n");
1037 ipr_err("Cache Directory Card Information:\n");
1038 ipr_log_vpd(&error->ioa_vpd);
1039 ipr_err("Adapter Card Information:\n");
1040 ipr_log_vpd(&error->cfc_vpd);
1042 ipr_err("-----Expected Configuration-----\n");
1043 ipr_err("Cache Directory Card Information:\n");
1044 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1045 ipr_err("Adapter Card Information:\n");
1046 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1048 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1049 be32_to_cpu(error->ioa_data[0]),
1050 be32_to_cpu(error->ioa_data[1]),
1051 be32_to_cpu(error->ioa_data[2]));
1055 * ipr_log_enhanced_config_error - Log a configuration error.
1056 * @ioa_cfg: ioa config struct
1057 * @hostrcb: hostrcb struct
1062 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1063 struct ipr_hostrcb *hostrcb)
1065 int errors_logged, i;
1066 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1067 struct ipr_hostrcb_type_13_error *error;
1069 error = &hostrcb->hcam.u.error.u.type_13_error;
1070 errors_logged = be32_to_cpu(error->errors_logged);
1072 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1073 be32_to_cpu(error->errors_detected), errors_logged);
1075 dev_entry = error->dev;
1077 for (i = 0; i < errors_logged; i++, dev_entry++) {
1080 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1081 ipr_log_ext_vpd(&dev_entry->vpd);
1083 ipr_err("-----New Device Information-----\n");
1084 ipr_log_ext_vpd(&dev_entry->new_vpd);
1086 ipr_err("Cache Directory Card Information:\n");
1087 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1089 ipr_err("Adapter Card Information:\n");
1090 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1095 * ipr_log_config_error - Log a configuration error.
1096 * @ioa_cfg: ioa config struct
1097 * @hostrcb: hostrcb struct
1102 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1103 struct ipr_hostrcb *hostrcb)
1105 int errors_logged, i;
1106 struct ipr_hostrcb_device_data_entry *dev_entry;
1107 struct ipr_hostrcb_type_03_error *error;
1109 error = &hostrcb->hcam.u.error.u.type_03_error;
1110 errors_logged = be32_to_cpu(error->errors_logged);
1112 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1113 be32_to_cpu(error->errors_detected), errors_logged);
1115 dev_entry = error->dev;
1117 for (i = 0; i < errors_logged; i++, dev_entry++) {
1120 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1121 ipr_log_vpd(&dev_entry->vpd);
1123 ipr_err("-----New Device Information-----\n");
1124 ipr_log_vpd(&dev_entry->new_vpd);
1126 ipr_err("Cache Directory Card Information:\n");
1127 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1129 ipr_err("Adapter Card Information:\n");
1130 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1132 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1133 be32_to_cpu(dev_entry->ioa_data[0]),
1134 be32_to_cpu(dev_entry->ioa_data[1]),
1135 be32_to_cpu(dev_entry->ioa_data[2]),
1136 be32_to_cpu(dev_entry->ioa_data[3]),
1137 be32_to_cpu(dev_entry->ioa_data[4]));
1142 * ipr_log_enhanced_array_error - Log an array configuration error.
1143 * @ioa_cfg: ioa config struct
1144 * @hostrcb: hostrcb struct
1149 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1150 struct ipr_hostrcb *hostrcb)
1153 struct ipr_hostrcb_type_14_error *error;
1154 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1155 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1157 error = &hostrcb->hcam.u.error.u.type_14_error;
1161 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1162 error->protection_level,
1163 ioa_cfg->host->host_no,
1164 error->last_func_vset_res_addr.bus,
1165 error->last_func_vset_res_addr.target,
1166 error->last_func_vset_res_addr.lun);
1170 array_entry = error->array_member;
1171 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1172 sizeof(error->array_member));
1174 for (i = 0; i < num_entries; i++, array_entry++) {
1175 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1178 if (be32_to_cpu(error->exposed_mode_adn) == i)
1179 ipr_err("Exposed Array Member %d:\n", i);
1181 ipr_err("Array Member %d:\n", i);
1183 ipr_log_ext_vpd(&array_entry->vpd);
1184 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1185 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1186 "Expected Location");
1193 * ipr_log_array_error - Log an array configuration error.
1194 * @ioa_cfg: ioa config struct
1195 * @hostrcb: hostrcb struct
1200 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1201 struct ipr_hostrcb *hostrcb)
1204 struct ipr_hostrcb_type_04_error *error;
1205 struct ipr_hostrcb_array_data_entry *array_entry;
1206 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1208 error = &hostrcb->hcam.u.error.u.type_04_error;
1212 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1213 error->protection_level,
1214 ioa_cfg->host->host_no,
1215 error->last_func_vset_res_addr.bus,
1216 error->last_func_vset_res_addr.target,
1217 error->last_func_vset_res_addr.lun);
1221 array_entry = error->array_member;
1223 for (i = 0; i < 18; i++) {
1224 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1227 if (be32_to_cpu(error->exposed_mode_adn) == i)
1228 ipr_err("Exposed Array Member %d:\n", i);
1230 ipr_err("Array Member %d:\n", i);
1232 ipr_log_vpd(&array_entry->vpd);
1234 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1235 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1236 "Expected Location");
1241 array_entry = error->array_member2;
1248 * ipr_log_hex_data - Log additional hex IOA error data.
1249 * @ioa_cfg: ioa config struct
1250 * @data: IOA error data
1256 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1263 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1264 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1266 for (i = 0; i < len / 4; i += 4) {
1267 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1268 be32_to_cpu(data[i]),
1269 be32_to_cpu(data[i+1]),
1270 be32_to_cpu(data[i+2]),
1271 be32_to_cpu(data[i+3]));
1276 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1277 * @ioa_cfg: ioa config struct
1278 * @hostrcb: hostrcb struct
1283 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1284 struct ipr_hostrcb *hostrcb)
1286 struct ipr_hostrcb_type_17_error *error;
1288 error = &hostrcb->hcam.u.error.u.type_17_error;
1289 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1291 ipr_err("%s\n", error->failure_reason);
1292 ipr_err("Remote Adapter VPD:\n");
1293 ipr_log_ext_vpd(&error->vpd);
1294 ipr_log_hex_data(ioa_cfg, error->data,
1295 be32_to_cpu(hostrcb->hcam.length) -
1296 (offsetof(struct ipr_hostrcb_error, u) +
1297 offsetof(struct ipr_hostrcb_type_17_error, data)));
1301 * ipr_log_dual_ioa_error - Log a dual adapter error.
1302 * @ioa_cfg: ioa config struct
1303 * @hostrcb: hostrcb struct
1308 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1309 struct ipr_hostrcb *hostrcb)
1311 struct ipr_hostrcb_type_07_error *error;
1313 error = &hostrcb->hcam.u.error.u.type_07_error;
1314 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1316 ipr_err("%s\n", error->failure_reason);
1317 ipr_err("Remote Adapter VPD:\n");
1318 ipr_log_vpd(&error->vpd);
1319 ipr_log_hex_data(ioa_cfg, error->data,
1320 be32_to_cpu(hostrcb->hcam.length) -
1321 (offsetof(struct ipr_hostrcb_error, u) +
1322 offsetof(struct ipr_hostrcb_type_07_error, data)));
1325 static const struct {
1328 } path_active_desc[] = {
1329 { IPR_PATH_NO_INFO, "Path" },
1330 { IPR_PATH_ACTIVE, "Active path" },
1331 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1334 static const struct {
1337 } path_state_desc[] = {
1338 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1339 { IPR_PATH_HEALTHY, "is healthy" },
1340 { IPR_PATH_DEGRADED, "is degraded" },
1341 { IPR_PATH_FAILED, "is failed" }
1345 * ipr_log_fabric_path - Log a fabric path error
1346 * @hostrcb: hostrcb struct
1347 * @fabric: fabric descriptor
1352 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1353 struct ipr_hostrcb_fabric_desc *fabric)
1356 u8 path_state = fabric->path_state;
1357 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1358 u8 state = path_state & IPR_PATH_STATE_MASK;
1360 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1361 if (path_active_desc[i].active != active)
1364 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1365 if (path_state_desc[j].state != state)
1368 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1369 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1370 path_active_desc[i].desc, path_state_desc[j].desc,
1372 } else if (fabric->cascaded_expander == 0xff) {
1373 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1374 path_active_desc[i].desc, path_state_desc[j].desc,
1375 fabric->ioa_port, fabric->phy);
1376 } else if (fabric->phy == 0xff) {
1377 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1378 path_active_desc[i].desc, path_state_desc[j].desc,
1379 fabric->ioa_port, fabric->cascaded_expander);
1381 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1382 path_active_desc[i].desc, path_state_desc[j].desc,
1383 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1389 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1390 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1393 static const struct {
1396 } path_type_desc[] = {
1397 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1398 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1399 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1400 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1403 static const struct {
1406 } path_status_desc[] = {
1407 { IPR_PATH_CFG_NO_PROB, "Functional" },
1408 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1409 { IPR_PATH_CFG_FAILED, "Failed" },
1410 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1411 { IPR_PATH_NOT_DETECTED, "Missing" },
1412 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1415 static const char *link_rate[] = {
1418 "phy reset problem",
1435 * ipr_log_path_elem - Log a fabric path element.
1436 * @hostrcb: hostrcb struct
1437 * @cfg: fabric path element struct
1442 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1443 struct ipr_hostrcb_config_element *cfg)
1446 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1447 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1449 if (type == IPR_PATH_CFG_NOT_EXIST)
1452 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1453 if (path_type_desc[i].type != type)
1456 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1457 if (path_status_desc[j].status != status)
1460 if (type == IPR_PATH_CFG_IOA_PORT) {
1461 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1462 path_status_desc[j].desc, path_type_desc[i].desc,
1463 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1464 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1466 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1467 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1468 path_status_desc[j].desc, path_type_desc[i].desc,
1469 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1470 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1471 } else if (cfg->cascaded_expander == 0xff) {
1472 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1473 "WWN=%08X%08X\n", path_status_desc[j].desc,
1474 path_type_desc[i].desc, cfg->phy,
1475 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1476 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1477 } else if (cfg->phy == 0xff) {
1478 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1479 "WWN=%08X%08X\n", path_status_desc[j].desc,
1480 path_type_desc[i].desc, cfg->cascaded_expander,
1481 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1482 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1484 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1485 "WWN=%08X%08X\n", path_status_desc[j].desc,
1486 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1487 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1488 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1495 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1496 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1497 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1498 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1502 * ipr_log_fabric_error - Log a fabric error.
1503 * @ioa_cfg: ioa config struct
1504 * @hostrcb: hostrcb struct
1509 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1510 struct ipr_hostrcb *hostrcb)
1512 struct ipr_hostrcb_type_20_error *error;
1513 struct ipr_hostrcb_fabric_desc *fabric;
1514 struct ipr_hostrcb_config_element *cfg;
1517 error = &hostrcb->hcam.u.error.u.type_20_error;
1518 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1519 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1521 add_len = be32_to_cpu(hostrcb->hcam.length) -
1522 (offsetof(struct ipr_hostrcb_error, u) +
1523 offsetof(struct ipr_hostrcb_type_20_error, desc));
1525 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1526 ipr_log_fabric_path(hostrcb, fabric);
1527 for_each_fabric_cfg(fabric, cfg)
1528 ipr_log_path_elem(hostrcb, cfg);
1530 add_len -= be16_to_cpu(fabric->length);
1531 fabric = (struct ipr_hostrcb_fabric_desc *)
1532 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1535 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
1539 * ipr_log_generic_error - Log an adapter error.
1540 * @ioa_cfg: ioa config struct
1541 * @hostrcb: hostrcb struct
1546 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1547 struct ipr_hostrcb *hostrcb)
1549 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
1550 be32_to_cpu(hostrcb->hcam.length));
1554 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1557 * This function will return the index of into the ipr_error_table
1558 * for the specified IOASC. If the IOASC is not in the table,
1559 * 0 will be returned, which points to the entry used for unknown errors.
1562 * index into the ipr_error_table
1564 static u32 ipr_get_error(u32 ioasc)
1568 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1569 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1576 * ipr_handle_log_data - Log an adapter error.
1577 * @ioa_cfg: ioa config struct
1578 * @hostrcb: hostrcb struct
1580 * This function logs an adapter error to the system.
1585 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1586 struct ipr_hostrcb *hostrcb)
1591 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1594 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1595 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1597 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1599 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1600 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1601 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1602 scsi_report_bus_reset(ioa_cfg->host,
1603 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1606 error_index = ipr_get_error(ioasc);
1608 if (!ipr_error_table[error_index].log_hcam)
1611 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1613 /* Set indication we have logged an error */
1614 ioa_cfg->errors_logged++;
1616 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1618 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1619 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1621 switch (hostrcb->hcam.overlay_id) {
1622 case IPR_HOST_RCB_OVERLAY_ID_2:
1623 ipr_log_cache_error(ioa_cfg, hostrcb);
1625 case IPR_HOST_RCB_OVERLAY_ID_3:
1626 ipr_log_config_error(ioa_cfg, hostrcb);
1628 case IPR_HOST_RCB_OVERLAY_ID_4:
1629 case IPR_HOST_RCB_OVERLAY_ID_6:
1630 ipr_log_array_error(ioa_cfg, hostrcb);
1632 case IPR_HOST_RCB_OVERLAY_ID_7:
1633 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1635 case IPR_HOST_RCB_OVERLAY_ID_12:
1636 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1638 case IPR_HOST_RCB_OVERLAY_ID_13:
1639 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1641 case IPR_HOST_RCB_OVERLAY_ID_14:
1642 case IPR_HOST_RCB_OVERLAY_ID_16:
1643 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1645 case IPR_HOST_RCB_OVERLAY_ID_17:
1646 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1648 case IPR_HOST_RCB_OVERLAY_ID_20:
1649 ipr_log_fabric_error(ioa_cfg, hostrcb);
1651 case IPR_HOST_RCB_OVERLAY_ID_1:
1652 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1654 ipr_log_generic_error(ioa_cfg, hostrcb);
1660 * ipr_process_error - Op done function for an adapter error log.
1661 * @ipr_cmd: ipr command struct
1663 * This function is the op done function for an error log host
1664 * controlled async from the adapter. It will log the error and
1665 * send the HCAM back to the adapter.
1670 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1672 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1673 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1674 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1676 list_del(&hostrcb->queue);
1677 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1680 ipr_handle_log_data(ioa_cfg, hostrcb);
1681 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1682 dev_err(&ioa_cfg->pdev->dev,
1683 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1686 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1690 * ipr_timeout - An internally generated op has timed out.
1691 * @ipr_cmd: ipr command struct
1693 * This function blocks host requests and initiates an
1699 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1701 unsigned long lock_flags = 0;
1702 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1705 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1707 ioa_cfg->errors_logged++;
1708 dev_err(&ioa_cfg->pdev->dev,
1709 "Adapter being reset due to command timeout.\n");
1711 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1712 ioa_cfg->sdt_state = GET_DUMP;
1714 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1715 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1717 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1722 * ipr_oper_timeout - Adapter timed out transitioning to operational
1723 * @ipr_cmd: ipr command struct
1725 * This function blocks host requests and initiates an
1731 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1733 unsigned long lock_flags = 0;
1734 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1737 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1739 ioa_cfg->errors_logged++;
1740 dev_err(&ioa_cfg->pdev->dev,
1741 "Adapter timed out transitioning to operational.\n");
1743 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1744 ioa_cfg->sdt_state = GET_DUMP;
1746 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1748 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1749 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1752 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1757 * ipr_reset_reload - Reset/Reload the IOA
1758 * @ioa_cfg: ioa config struct
1759 * @shutdown_type: shutdown type
1761 * This function resets the adapter and re-initializes it.
1762 * This function assumes that all new host commands have been stopped.
1766 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1767 enum ipr_shutdown_type shutdown_type)
1769 if (!ioa_cfg->in_reset_reload)
1770 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1772 spin_unlock_irq(ioa_cfg->host->host_lock);
1773 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1774 spin_lock_irq(ioa_cfg->host->host_lock);
1776 /* If we got hit with a host reset while we were already resetting
1777 the adapter for some reason, and the reset failed. */
1778 if (ioa_cfg->ioa_is_dead) {
1787 * ipr_find_ses_entry - Find matching SES in SES table
1788 * @res: resource entry struct of SES
1791 * pointer to SES table entry / NULL on failure
1793 static const struct ipr_ses_table_entry *
1794 ipr_find_ses_entry(struct ipr_resource_entry *res)
1797 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1799 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1800 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1801 if (ste->compare_product_id_byte[j] == 'X') {
1802 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1810 if (matches == IPR_PROD_ID_LEN)
1818 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1819 * @ioa_cfg: ioa config struct
1821 * @bus_width: bus width
1824 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1825 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1826 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1827 * max 160MHz = max 320MB/sec).
1829 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1831 struct ipr_resource_entry *res;
1832 const struct ipr_ses_table_entry *ste;
1833 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1835 /* Loop through each config table entry in the config table buffer */
1836 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1837 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1840 if (bus != res->cfgte.res_addr.bus)
1843 if (!(ste = ipr_find_ses_entry(res)))
1846 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1849 return max_xfer_rate;
1853 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1854 * @ioa_cfg: ioa config struct
1855 * @max_delay: max delay in micro-seconds to wait
1857 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1860 * 0 on success / other on failure
1862 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1864 volatile u32 pcii_reg;
1867 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1868 while (delay < max_delay) {
1869 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1871 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1874 /* udelay cannot be used if delay is more than a few milliseconds */
1875 if ((delay / 1000) > MAX_UDELAY_MS)
1876 mdelay(delay / 1000);
1886 * ipr_get_ldump_data_section - Dump IOA memory
1887 * @ioa_cfg: ioa config struct
1888 * @start_addr: adapter address to dump
1889 * @dest: destination kernel buffer
1890 * @length_in_words: length to dump in 4 byte words
1893 * 0 on success / -EIO on failure
1895 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1897 __be32 *dest, u32 length_in_words)
1899 volatile u32 temp_pcii_reg;
1902 /* Write IOA interrupt reg starting LDUMP state */
1903 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1904 ioa_cfg->regs.set_uproc_interrupt_reg);
1906 /* Wait for IO debug acknowledge */
1907 if (ipr_wait_iodbg_ack(ioa_cfg,
1908 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1909 dev_err(&ioa_cfg->pdev->dev,
1910 "IOA dump long data transfer timeout\n");
1914 /* Signal LDUMP interlocked - clear IO debug ack */
1915 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1916 ioa_cfg->regs.clr_interrupt_reg);
1918 /* Write Mailbox with starting address */
1919 writel(start_addr, ioa_cfg->ioa_mailbox);
1921 /* Signal address valid - clear IOA Reset alert */
1922 writel(IPR_UPROCI_RESET_ALERT,
1923 ioa_cfg->regs.clr_uproc_interrupt_reg);
1925 for (i = 0; i < length_in_words; i++) {
1926 /* Wait for IO debug acknowledge */
1927 if (ipr_wait_iodbg_ack(ioa_cfg,
1928 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1929 dev_err(&ioa_cfg->pdev->dev,
1930 "IOA dump short data transfer timeout\n");
1934 /* Read data from mailbox and increment destination pointer */
1935 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1938 /* For all but the last word of data, signal data received */
1939 if (i < (length_in_words - 1)) {
1940 /* Signal dump data received - Clear IO debug Ack */
1941 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1942 ioa_cfg->regs.clr_interrupt_reg);
1946 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1947 writel(IPR_UPROCI_RESET_ALERT,
1948 ioa_cfg->regs.set_uproc_interrupt_reg);
1950 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1951 ioa_cfg->regs.clr_uproc_interrupt_reg);
1953 /* Signal dump data received - Clear IO debug Ack */
1954 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1955 ioa_cfg->regs.clr_interrupt_reg);
1957 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1958 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1960 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1962 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1972 #ifdef CONFIG_SCSI_IPR_DUMP
1974 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1975 * @ioa_cfg: ioa config struct
1976 * @pci_address: adapter address
1977 * @length: length of data to copy
1979 * Copy data from PCI adapter to kernel buffer.
1980 * Note: length MUST be a 4 byte multiple
1982 * 0 on success / other on failure
1984 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1985 unsigned long pci_address, u32 length)
1987 int bytes_copied = 0;
1988 int cur_len, rc, rem_len, rem_page_len;
1990 unsigned long lock_flags = 0;
1991 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1993 while (bytes_copied < length &&
1994 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1995 if (ioa_dump->page_offset >= PAGE_SIZE ||
1996 ioa_dump->page_offset == 0) {
1997 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2001 return bytes_copied;
2004 ioa_dump->page_offset = 0;
2005 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2006 ioa_dump->next_page_index++;
2008 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2010 rem_len = length - bytes_copied;
2011 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2012 cur_len = min(rem_len, rem_page_len);
2014 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2015 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2018 rc = ipr_get_ldump_data_section(ioa_cfg,
2019 pci_address + bytes_copied,
2020 &page[ioa_dump->page_offset / 4],
2021 (cur_len / sizeof(u32)));
2023 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2026 ioa_dump->page_offset += cur_len;
2027 bytes_copied += cur_len;
2035 return bytes_copied;
2039 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2040 * @hdr: dump entry header struct
2045 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2047 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2049 hdr->offset = sizeof(*hdr);
2050 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2054 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2055 * @ioa_cfg: ioa config struct
2056 * @driver_dump: driver dump struct
2061 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2062 struct ipr_driver_dump *driver_dump)
2064 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2066 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2067 driver_dump->ioa_type_entry.hdr.len =
2068 sizeof(struct ipr_dump_ioa_type_entry) -
2069 sizeof(struct ipr_dump_entry_header);
2070 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2071 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2072 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2073 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2074 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2075 ucode_vpd->minor_release[1];
2076 driver_dump->hdr.num_entries++;
2080 * ipr_dump_version_data - Fill in the driver version in the dump.
2081 * @ioa_cfg: ioa config struct
2082 * @driver_dump: driver dump struct
2087 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2088 struct ipr_driver_dump *driver_dump)
2090 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2091 driver_dump->version_entry.hdr.len =
2092 sizeof(struct ipr_dump_version_entry) -
2093 sizeof(struct ipr_dump_entry_header);
2094 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2095 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2096 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2097 driver_dump->hdr.num_entries++;
2101 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2102 * @ioa_cfg: ioa config struct
2103 * @driver_dump: driver dump struct
2108 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2109 struct ipr_driver_dump *driver_dump)
2111 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2112 driver_dump->trace_entry.hdr.len =
2113 sizeof(struct ipr_dump_trace_entry) -
2114 sizeof(struct ipr_dump_entry_header);
2115 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2116 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2117 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2118 driver_dump->hdr.num_entries++;
2122 * ipr_dump_location_data - Fill in the IOA location in the dump.
2123 * @ioa_cfg: ioa config struct
2124 * @driver_dump: driver dump struct
2129 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2130 struct ipr_driver_dump *driver_dump)
2132 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2133 driver_dump->location_entry.hdr.len =
2134 sizeof(struct ipr_dump_location_entry) -
2135 sizeof(struct ipr_dump_entry_header);
2136 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2137 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2138 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
2139 driver_dump->hdr.num_entries++;
2143 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2144 * @ioa_cfg: ioa config struct
2145 * @dump: dump struct
2150 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2152 unsigned long start_addr, sdt_word;
2153 unsigned long lock_flags = 0;
2154 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2155 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2156 u32 num_entries, start_off, end_off;
2157 u32 bytes_to_copy, bytes_copied, rc;
2158 struct ipr_sdt *sdt;
2163 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2165 if (ioa_cfg->sdt_state != GET_DUMP) {
2166 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2170 start_addr = readl(ioa_cfg->ioa_mailbox);
2172 if (!ipr_sdt_is_fmt2(start_addr)) {
2173 dev_err(&ioa_cfg->pdev->dev,
2174 "Invalid dump table format: %lx\n", start_addr);
2175 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2179 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2181 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2183 /* Initialize the overall dump header */
2184 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2185 driver_dump->hdr.num_entries = 1;
2186 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2187 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2188 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2189 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2191 ipr_dump_version_data(ioa_cfg, driver_dump);
2192 ipr_dump_location_data(ioa_cfg, driver_dump);
2193 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2194 ipr_dump_trace_data(ioa_cfg, driver_dump);
2196 /* Update dump_header */
2197 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2199 /* IOA Dump entry */
2200 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2201 ioa_dump->format = IPR_SDT_FMT2;
2202 ioa_dump->hdr.len = 0;
2203 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2204 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2206 /* First entries in sdt are actually a list of dump addresses and
2207 lengths to gather the real dump data. sdt represents the pointer
2208 to the ioa generated dump table. Dump data will be extracted based
2209 on entries in this table */
2210 sdt = &ioa_dump->sdt;
2212 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2213 sizeof(struct ipr_sdt) / sizeof(__be32));
2215 /* Smart Dump table is ready to use and the first entry is valid */
2216 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2217 dev_err(&ioa_cfg->pdev->dev,
2218 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2219 rc, be32_to_cpu(sdt->hdr.state));
2220 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2221 ioa_cfg->sdt_state = DUMP_OBTAINED;
2222 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2226 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2228 if (num_entries > IPR_NUM_SDT_ENTRIES)
2229 num_entries = IPR_NUM_SDT_ENTRIES;
2231 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2233 for (i = 0; i < num_entries; i++) {
2234 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2235 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2239 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2240 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2241 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2242 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2244 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2245 bytes_to_copy = end_off - start_off;
2246 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2247 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2251 /* Copy data from adapter to driver buffers */
2252 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2255 ioa_dump->hdr.len += bytes_copied;
2257 if (bytes_copied != bytes_to_copy) {
2258 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2265 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2267 /* Update dump_header */
2268 driver_dump->hdr.len += ioa_dump->hdr.len;
2270 ioa_cfg->sdt_state = DUMP_OBTAINED;
2275 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2279 * ipr_release_dump - Free adapter dump memory
2280 * @kref: kref struct
2285 static void ipr_release_dump(struct kref *kref)
2287 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2288 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2289 unsigned long lock_flags = 0;
2293 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2294 ioa_cfg->dump = NULL;
2295 ioa_cfg->sdt_state = INACTIVE;
2296 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2298 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2299 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2306 * ipr_worker_thread - Worker thread
2307 * @work: ioa config struct
2309 * Called at task level from a work thread. This function takes care
2310 * of adding and removing device from the mid-layer as configuration
2311 * changes are detected by the adapter.
2316 static void ipr_worker_thread(struct work_struct *work)
2318 unsigned long lock_flags;
2319 struct ipr_resource_entry *res;
2320 struct scsi_device *sdev;
2321 struct ipr_dump *dump;
2322 struct ipr_ioa_cfg *ioa_cfg =
2323 container_of(work, struct ipr_ioa_cfg, work_q);
2324 u8 bus, target, lun;
2328 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2330 if (ioa_cfg->sdt_state == GET_DUMP) {
2331 dump = ioa_cfg->dump;
2333 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2336 kref_get(&dump->kref);
2337 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2338 ipr_get_ioa_dump(ioa_cfg, dump);
2339 kref_put(&dump->kref, ipr_release_dump);
2341 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2342 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2343 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2344 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2351 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2352 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2356 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2357 if (res->del_from_ml && res->sdev) {
2360 if (!scsi_device_get(sdev)) {
2361 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2362 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2363 scsi_remove_device(sdev);
2364 scsi_device_put(sdev);
2365 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2372 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2373 if (res->add_to_ml) {
2374 bus = res->cfgte.res_addr.bus;
2375 target = res->cfgte.res_addr.target;
2376 lun = res->cfgte.res_addr.lun;
2378 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2379 scsi_add_device(ioa_cfg->host, bus, target, lun);
2380 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2386 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
2390 #ifdef CONFIG_SCSI_IPR_TRACE
2392 * ipr_read_trace - Dump the adapter trace
2393 * @kobj: kobject struct
2396 * @count: buffer size
2399 * number of bytes printed to buffer
2401 static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
2402 loff_t off, size_t count)
2404 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2405 struct Scsi_Host *shost = class_to_shost(cdev);
2406 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2407 unsigned long lock_flags = 0;
2408 int size = IPR_TRACE_SIZE;
2409 char *src = (char *)ioa_cfg->trace;
2413 if (off + count > size) {
2418 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2419 memcpy(buf, &src[off], count);
2420 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2424 static struct bin_attribute ipr_trace_attr = {
2430 .read = ipr_read_trace,
2434 static const struct {
2435 enum ipr_cache_state state;
2437 } cache_state [] = {
2438 { CACHE_NONE, "none" },
2439 { CACHE_DISABLED, "disabled" },
2440 { CACHE_ENABLED, "enabled" }
2444 * ipr_show_write_caching - Show the write caching attribute
2445 * @class_dev: class device struct
2449 * number of bytes printed to buffer
2451 static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2453 struct Scsi_Host *shost = class_to_shost(class_dev);
2454 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2455 unsigned long lock_flags = 0;
2458 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2459 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2460 if (cache_state[i].state == ioa_cfg->cache_state) {
2461 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2465 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2471 * ipr_store_write_caching - Enable/disable adapter write cache
2472 * @class_dev: class_device struct
2474 * @count: buffer size
2476 * This function will enable/disable adapter write cache.
2479 * count on success / other on failure
2481 static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2482 const char *buf, size_t count)
2484 struct Scsi_Host *shost = class_to_shost(class_dev);
2485 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2486 unsigned long lock_flags = 0;
2487 enum ipr_cache_state new_state = CACHE_INVALID;
2490 if (!capable(CAP_SYS_ADMIN))
2492 if (ioa_cfg->cache_state == CACHE_NONE)
2495 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2496 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2497 new_state = cache_state[i].state;
2502 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2505 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2506 if (ioa_cfg->cache_state == new_state) {
2507 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2511 ioa_cfg->cache_state = new_state;
2512 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2513 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2514 if (!ioa_cfg->in_reset_reload)
2515 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2516 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2517 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2522 static struct class_device_attribute ipr_ioa_cache_attr = {
2524 .name = "write_cache",
2525 .mode = S_IRUGO | S_IWUSR,
2527 .show = ipr_show_write_caching,
2528 .store = ipr_store_write_caching
2532 * ipr_show_fw_version - Show the firmware version
2533 * @class_dev: class device struct
2537 * number of bytes printed to buffer
2539 static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2541 struct Scsi_Host *shost = class_to_shost(class_dev);
2542 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2543 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2544 unsigned long lock_flags = 0;
2547 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2548 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2549 ucode_vpd->major_release, ucode_vpd->card_type,
2550 ucode_vpd->minor_release[0],
2551 ucode_vpd->minor_release[1]);
2552 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2556 static struct class_device_attribute ipr_fw_version_attr = {
2558 .name = "fw_version",
2561 .show = ipr_show_fw_version,
2565 * ipr_show_log_level - Show the adapter's error logging level
2566 * @class_dev: class device struct
2570 * number of bytes printed to buffer
2572 static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2574 struct Scsi_Host *shost = class_to_shost(class_dev);
2575 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2576 unsigned long lock_flags = 0;
2579 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2580 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2581 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2586 * ipr_store_log_level - Change the adapter's error logging level
2587 * @class_dev: class device struct
2591 * number of bytes printed to buffer
2593 static ssize_t ipr_store_log_level(struct class_device *class_dev,
2594 const char *buf, size_t count)
2596 struct Scsi_Host *shost = class_to_shost(class_dev);
2597 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2598 unsigned long lock_flags = 0;
2600 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2601 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2602 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2606 static struct class_device_attribute ipr_log_level_attr = {
2608 .name = "log_level",
2609 .mode = S_IRUGO | S_IWUSR,
2611 .show = ipr_show_log_level,
2612 .store = ipr_store_log_level
2616 * ipr_store_diagnostics - IOA Diagnostics interface
2617 * @class_dev: class_device struct
2619 * @count: buffer size
2621 * This function will reset the adapter and wait a reasonable
2622 * amount of time for any errors that the adapter might log.
2625 * count on success / other on failure
2627 static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2628 const char *buf, size_t count)
2630 struct Scsi_Host *shost = class_to_shost(class_dev);
2631 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2632 unsigned long lock_flags = 0;
2635 if (!capable(CAP_SYS_ADMIN))
2638 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2639 while(ioa_cfg->in_reset_reload) {
2640 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2641 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2642 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2645 ioa_cfg->errors_logged = 0;
2646 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2648 if (ioa_cfg->in_reset_reload) {
2649 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2650 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2652 /* Wait for a second for any errors to be logged */
2655 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2659 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2660 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2662 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2667 static struct class_device_attribute ipr_diagnostics_attr = {
2669 .name = "run_diagnostics",
2672 .store = ipr_store_diagnostics
2676 * ipr_show_adapter_state - Show the adapter's state
2677 * @class_dev: class device struct
2681 * number of bytes printed to buffer
2683 static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2685 struct Scsi_Host *shost = class_to_shost(class_dev);
2686 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2687 unsigned long lock_flags = 0;
2690 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2691 if (ioa_cfg->ioa_is_dead)
2692 len = snprintf(buf, PAGE_SIZE, "offline\n");
2694 len = snprintf(buf, PAGE_SIZE, "online\n");
2695 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2700 * ipr_store_adapter_state - Change adapter state
2701 * @class_dev: class_device struct
2703 * @count: buffer size
2705 * This function will change the adapter's state.
2708 * count on success / other on failure
2710 static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2711 const char *buf, size_t count)
2713 struct Scsi_Host *shost = class_to_shost(class_dev);
2714 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2715 unsigned long lock_flags;
2718 if (!capable(CAP_SYS_ADMIN))
2721 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2722 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2723 ioa_cfg->ioa_is_dead = 0;
2724 ioa_cfg->reset_retries = 0;
2725 ioa_cfg->in_ioa_bringdown = 0;
2726 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2728 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2729 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2734 static struct class_device_attribute ipr_ioa_state_attr = {
2737 .mode = S_IRUGO | S_IWUSR,
2739 .show = ipr_show_adapter_state,
2740 .store = ipr_store_adapter_state
2744 * ipr_store_reset_adapter - Reset the adapter
2745 * @class_dev: class_device struct
2747 * @count: buffer size
2749 * This function will reset the adapter.
2752 * count on success / other on failure
2754 static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2755 const char *buf, size_t count)
2757 struct Scsi_Host *shost = class_to_shost(class_dev);
2758 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2759 unsigned long lock_flags;
2762 if (!capable(CAP_SYS_ADMIN))
2765 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2766 if (!ioa_cfg->in_reset_reload)
2767 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2768 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2769 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2774 static struct class_device_attribute ipr_ioa_reset_attr = {
2776 .name = "reset_host",
2779 .store = ipr_store_reset_adapter
2783 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2784 * @buf_len: buffer length
2786 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2787 * list to use for microcode download
2790 * pointer to sglist / NULL on failure
2792 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2794 int sg_size, order, bsize_elem, num_elem, i, j;
2795 struct ipr_sglist *sglist;
2796 struct scatterlist *scatterlist;
2799 /* Get the minimum size per scatter/gather element */
2800 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2802 /* Get the actual size per element */
2803 order = get_order(sg_size);
2805 /* Determine the actual number of bytes per element */
2806 bsize_elem = PAGE_SIZE * (1 << order);
2808 /* Determine the actual number of sg entries needed */
2809 if (buf_len % bsize_elem)
2810 num_elem = (buf_len / bsize_elem) + 1;
2812 num_elem = buf_len / bsize_elem;
2814 /* Allocate a scatter/gather list for the DMA */
2815 sglist = kzalloc(sizeof(struct ipr_sglist) +
2816 (sizeof(struct scatterlist) * (num_elem - 1)),
2819 if (sglist == NULL) {
2824 scatterlist = sglist->scatterlist;
2826 sglist->order = order;
2827 sglist->num_sg = num_elem;
2829 /* Allocate a bunch of sg elements */
2830 for (i = 0; i < num_elem; i++) {
2831 page = alloc_pages(GFP_KERNEL, order);
2835 /* Free up what we already allocated */
2836 for (j = i - 1; j >= 0; j--)
2837 __free_pages(scatterlist[j].page, order);
2842 scatterlist[i].page = page;
2849 * ipr_free_ucode_buffer - Frees a microcode download buffer
2850 * @p_dnld: scatter/gather list pointer
2852 * Free a DMA'able ucode download buffer previously allocated with
2853 * ipr_alloc_ucode_buffer
2858 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2862 for (i = 0; i < sglist->num_sg; i++)
2863 __free_pages(sglist->scatterlist[i].page, sglist->order);
2869 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2870 * @sglist: scatter/gather list pointer
2871 * @buffer: buffer pointer
2872 * @len: buffer length
2874 * Copy a microcode image from a user buffer into a buffer allocated by
2875 * ipr_alloc_ucode_buffer
2878 * 0 on success / other on failure
2880 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2881 u8 *buffer, u32 len)
2883 int bsize_elem, i, result = 0;
2884 struct scatterlist *scatterlist;
2887 /* Determine the actual number of bytes per element */
2888 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2890 scatterlist = sglist->scatterlist;
2892 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2893 kaddr = kmap(scatterlist[i].page);
2894 memcpy(kaddr, buffer, bsize_elem);
2895 kunmap(scatterlist[i].page);
2897 scatterlist[i].length = bsize_elem;
2905 if (len % bsize_elem) {
2906 kaddr = kmap(scatterlist[i].page);
2907 memcpy(kaddr, buffer, len % bsize_elem);
2908 kunmap(scatterlist[i].page);
2910 scatterlist[i].length = len % bsize_elem;
2913 sglist->buffer_len = len;
2918 * ipr_build_ucode_ioadl - Build a microcode download IOADL
2919 * @ipr_cmd: ipr command struct
2920 * @sglist: scatter/gather list
2922 * Builds a microcode download IOA data list (IOADL).
2925 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2926 struct ipr_sglist *sglist)
2928 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2929 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2930 struct scatterlist *scatterlist = sglist->scatterlist;
2933 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
2934 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2935 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
2936 ioarcb->write_ioadl_len =
2937 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2939 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2940 ioadl[i].flags_and_data_len =
2941 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2943 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2946 ioadl[i-1].flags_and_data_len |=
2947 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2951 * ipr_update_ioa_ucode - Update IOA's microcode
2952 * @ioa_cfg: ioa config struct
2953 * @sglist: scatter/gather list
2955 * Initiate an adapter reset to update the IOA's microcode
2958 * 0 on success / -EIO on failure
2960 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
2961 struct ipr_sglist *sglist)
2963 unsigned long lock_flags;
2965 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2966 while(ioa_cfg->in_reset_reload) {
2967 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2968 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2969 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2972 if (ioa_cfg->ucode_sglist) {
2973 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2974 dev_err(&ioa_cfg->pdev->dev,
2975 "Microcode download already in progress\n");
2979 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
2980 sglist->num_sg, DMA_TO_DEVICE);
2982 if (!sglist->num_dma_sg) {
2983 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2984 dev_err(&ioa_cfg->pdev->dev,
2985 "Failed to map microcode download buffer!\n");
2989 ioa_cfg->ucode_sglist = sglist;
2990 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2991 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2992 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2994 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2995 ioa_cfg->ucode_sglist = NULL;
2996 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3001 * ipr_store_update_fw - Update the firmware on the adapter
3002 * @class_dev: class_device struct
3004 * @count: buffer size
3006 * This function will update the firmware on the adapter.
3009 * count on success / other on failure
3011 static ssize_t ipr_store_update_fw(struct class_device *class_dev,
3012 const char *buf, size_t count)
3014 struct Scsi_Host *shost = class_to_shost(class_dev);
3015 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3016 struct ipr_ucode_image_header *image_hdr;
3017 const struct firmware *fw_entry;
3018 struct ipr_sglist *sglist;
3021 int len, result, dnld_size;
3023 if (!capable(CAP_SYS_ADMIN))
3026 len = snprintf(fname, 99, "%s", buf);
3027 fname[len-1] = '\0';
3029 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3030 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3034 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3036 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3037 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3038 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3039 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3040 release_firmware(fw_entry);
3044 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3045 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3046 sglist = ipr_alloc_ucode_buffer(dnld_size);
3049 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3050 release_firmware(fw_entry);
3054 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3057 dev_err(&ioa_cfg->pdev->dev,
3058 "Microcode buffer copy to DMA buffer failed\n");
3062 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3067 ipr_free_ucode_buffer(sglist);
3068 release_firmware(fw_entry);
3072 static struct class_device_attribute ipr_update_fw_attr = {
3074 .name = "update_fw",
3077 .store = ipr_store_update_fw
3080 static struct class_device_attribute *ipr_ioa_attrs[] = {
3081 &ipr_fw_version_attr,
3082 &ipr_log_level_attr,
3083 &ipr_diagnostics_attr,
3084 &ipr_ioa_state_attr,
3085 &ipr_ioa_reset_attr,
3086 &ipr_update_fw_attr,
3087 &ipr_ioa_cache_attr,
3091 #ifdef CONFIG_SCSI_IPR_DUMP
3093 * ipr_read_dump - Dump the adapter
3094 * @kobj: kobject struct
3097 * @count: buffer size
3100 * number of bytes printed to buffer
3102 static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
3103 loff_t off, size_t count)
3105 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3106 struct Scsi_Host *shost = class_to_shost(cdev);
3107 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3108 struct ipr_dump *dump;
3109 unsigned long lock_flags = 0;
3114 if (!capable(CAP_SYS_ADMIN))
3117 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3118 dump = ioa_cfg->dump;
3120 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3121 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3124 kref_get(&dump->kref);
3125 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3127 if (off > dump->driver_dump.hdr.len) {
3128 kref_put(&dump->kref, ipr_release_dump);
3132 if (off + count > dump->driver_dump.hdr.len) {
3133 count = dump->driver_dump.hdr.len - off;
3137 if (count && off < sizeof(dump->driver_dump)) {
3138 if (off + count > sizeof(dump->driver_dump))
3139 len = sizeof(dump->driver_dump) - off;
3142 src = (u8 *)&dump->driver_dump + off;
3143 memcpy(buf, src, len);
3149 off -= sizeof(dump->driver_dump);
3151 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3152 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3153 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3156 src = (u8 *)&dump->ioa_dump + off;
3157 memcpy(buf, src, len);
3163 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3166 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3167 len = PAGE_ALIGN(off) - off;
3170 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3171 src += off & ~PAGE_MASK;
3172 memcpy(buf, src, len);
3178 kref_put(&dump->kref, ipr_release_dump);
3183 * ipr_alloc_dump - Prepare for adapter dump
3184 * @ioa_cfg: ioa config struct
3187 * 0 on success / other on failure
3189 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3191 struct ipr_dump *dump;
3192 unsigned long lock_flags = 0;
3194 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3197 ipr_err("Dump memory allocation failed\n");
3201 kref_init(&dump->kref);
3202 dump->ioa_cfg = ioa_cfg;
3204 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3206 if (INACTIVE != ioa_cfg->sdt_state) {
3207 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3212 ioa_cfg->dump = dump;
3213 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3214 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3215 ioa_cfg->dump_taken = 1;
3216 schedule_work(&ioa_cfg->work_q);
3218 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3224 * ipr_free_dump - Free adapter dump memory
3225 * @ioa_cfg: ioa config struct
3228 * 0 on success / other on failure
3230 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3232 struct ipr_dump *dump;
3233 unsigned long lock_flags = 0;
3237 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3238 dump = ioa_cfg->dump;
3240 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3244 ioa_cfg->dump = NULL;
3245 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3247 kref_put(&dump->kref, ipr_release_dump);
3254 * ipr_write_dump - Setup dump state of adapter
3255 * @kobj: kobject struct
3258 * @count: buffer size
3261 * number of bytes printed to buffer
3263 static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
3264 loff_t off, size_t count)
3266 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3267 struct Scsi_Host *shost = class_to_shost(cdev);
3268 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3271 if (!capable(CAP_SYS_ADMIN))
3275 rc = ipr_alloc_dump(ioa_cfg);
3276 else if (buf[0] == '0')
3277 rc = ipr_free_dump(ioa_cfg);
3287 static struct bin_attribute ipr_dump_attr = {
3290 .mode = S_IRUSR | S_IWUSR,
3293 .read = ipr_read_dump,
3294 .write = ipr_write_dump
3297 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3301 * ipr_change_queue_depth - Change the device's queue depth
3302 * @sdev: scsi device struct
3303 * @qdepth: depth to set
3308 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3310 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3311 struct ipr_resource_entry *res;
3312 unsigned long lock_flags = 0;
3314 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3315 res = (struct ipr_resource_entry *)sdev->hostdata;
3317 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3318 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3319 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3321 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3322 return sdev->queue_depth;
3326 * ipr_change_queue_type - Change the device's queue type
3327 * @dsev: scsi device struct
3328 * @tag_type: type of tags to use
3331 * actual queue type set
3333 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3335 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3336 struct ipr_resource_entry *res;
3337 unsigned long lock_flags = 0;
3339 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3340 res = (struct ipr_resource_entry *)sdev->hostdata;
3343 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3345 * We don't bother quiescing the device here since the
3346 * adapter firmware does it for us.
3348 scsi_set_tag_type(sdev, tag_type);
3351 scsi_activate_tcq(sdev, sdev->queue_depth);
3353 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3359 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3364 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3365 * @dev: device struct
3369 * number of bytes printed to buffer
3371 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
3373 struct scsi_device *sdev = to_scsi_device(dev);
3374 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3375 struct ipr_resource_entry *res;
3376 unsigned long lock_flags = 0;
3377 ssize_t len = -ENXIO;
3379 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3380 res = (struct ipr_resource_entry *)sdev->hostdata;
3382 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3383 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3387 static struct device_attribute ipr_adapter_handle_attr = {
3389 .name = "adapter_handle",
3392 .show = ipr_show_adapter_handle
3395 static struct device_attribute *ipr_dev_attrs[] = {
3396 &ipr_adapter_handle_attr,
3401 * ipr_biosparam - Return the HSC mapping
3402 * @sdev: scsi device struct
3403 * @block_device: block device pointer
3404 * @capacity: capacity of the device
3405 * @parm: Array containing returned HSC values.
3407 * This function generates the HSC parms that fdisk uses.
3408 * We want to make sure we return something that places partitions
3409 * on 4k boundaries for best performance with the IOA.
3414 static int ipr_biosparam(struct scsi_device *sdev,
3415 struct block_device *block_device,
3416 sector_t capacity, int *parm)
3424 cylinders = capacity;
3425 sector_div(cylinders, (128 * 32));
3430 parm[2] = cylinders;
3436 * ipr_find_starget - Find target based on bus/target.
3437 * @starget: scsi target struct
3440 * resource entry pointer if found / NULL if not found
3442 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3444 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3445 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3446 struct ipr_resource_entry *res;
3448 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3449 if ((res->cfgte.res_addr.bus == starget->channel) &&
3450 (res->cfgte.res_addr.target == starget->id) &&
3451 (res->cfgte.res_addr.lun == 0)) {
3459 static struct ata_port_info sata_port_info;
3462 * ipr_target_alloc - Prepare for commands to a SCSI target
3463 * @starget: scsi target struct
3465 * If the device is a SATA device, this function allocates an
3466 * ATA port with libata, else it does nothing.
3469 * 0 on success / non-0 on failure
3471 static int ipr_target_alloc(struct scsi_target *starget)
3473 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3474 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3475 struct ipr_sata_port *sata_port;
3476 struct ata_port *ap;
3477 struct ipr_resource_entry *res;
3478 unsigned long lock_flags;
3480 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3481 res = ipr_find_starget(starget);
3482 starget->hostdata = NULL;
3484 if (res && ipr_is_gata(res)) {
3485 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3486 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3490 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3492 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3493 sata_port->ioa_cfg = ioa_cfg;
3495 sata_port->res = res;
3497 res->sata_port = sata_port;
3498 ap->private_data = sata_port;
3499 starget->hostdata = sata_port;
3505 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3511 * ipr_target_destroy - Destroy a SCSI target
3512 * @starget: scsi target struct
3514 * If the device was a SATA device, this function frees the libata
3515 * ATA port, else it does nothing.
3518 static void ipr_target_destroy(struct scsi_target *starget)
3520 struct ipr_sata_port *sata_port = starget->hostdata;
3523 starget->hostdata = NULL;
3524 ata_sas_port_destroy(sata_port->ap);
3530 * ipr_find_sdev - Find device based on bus/target/lun.
3531 * @sdev: scsi device struct
3534 * resource entry pointer if found / NULL if not found
3536 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3538 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3539 struct ipr_resource_entry *res;
3541 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3542 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3543 (res->cfgte.res_addr.target == sdev->id) &&
3544 (res->cfgte.res_addr.lun == sdev->lun))
3552 * ipr_slave_destroy - Unconfigure a SCSI device
3553 * @sdev: scsi device struct
3558 static void ipr_slave_destroy(struct scsi_device *sdev)
3560 struct ipr_resource_entry *res;
3561 struct ipr_ioa_cfg *ioa_cfg;
3562 unsigned long lock_flags = 0;
3564 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3566 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3567 res = (struct ipr_resource_entry *) sdev->hostdata;
3570 ata_port_disable(res->sata_port->ap);
3571 sdev->hostdata = NULL;
3573 res->sata_port = NULL;
3575 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3579 * ipr_slave_configure - Configure a SCSI device
3580 * @sdev: scsi device struct
3582 * This function configures the specified scsi device.
3587 static int ipr_slave_configure(struct scsi_device *sdev)
3589 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3590 struct ipr_resource_entry *res;
3591 unsigned long lock_flags = 0;
3593 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3594 res = sdev->hostdata;
3596 if (ipr_is_af_dasd_device(res))
3597 sdev->type = TYPE_RAID;
3598 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
3599 sdev->scsi_level = 4;
3600 sdev->no_uld_attach = 1;
3602 if (ipr_is_vset_device(res)) {
3603 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3604 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3606 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
3607 sdev->allow_restart = 1;
3608 if (ipr_is_gata(res) && res->sata_port) {
3609 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3610 ata_sas_slave_configure(sdev, res->sata_port->ap);
3612 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3615 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3620 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3621 * @sdev: scsi device struct
3623 * This function initializes an ATA port so that future commands
3624 * sent through queuecommand will work.
3629 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3631 struct ipr_sata_port *sata_port = NULL;
3635 if (sdev->sdev_target)
3636 sata_port = sdev->sdev_target->hostdata;
3638 rc = ata_sas_port_init(sata_port->ap);
3640 ipr_slave_destroy(sdev);
3647 * ipr_slave_alloc - Prepare for commands to a device.
3648 * @sdev: scsi device struct
3650 * This function saves a pointer to the resource entry
3651 * in the scsi device struct if the device exists. We
3652 * can then use this pointer in ipr_queuecommand when
3653 * handling new commands.
3656 * 0 on success / -ENXIO if device does not exist
3658 static int ipr_slave_alloc(struct scsi_device *sdev)
3660 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3661 struct ipr_resource_entry *res;
3662 unsigned long lock_flags;
3665 sdev->hostdata = NULL;
3667 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3669 res = ipr_find_sdev(sdev);
3674 sdev->hostdata = res;
3675 if (!ipr_is_naca_model(res))
3676 res->needs_sync_complete = 1;
3678 if (ipr_is_gata(res)) {
3679 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3680 return ipr_ata_slave_alloc(sdev);
3684 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3690 * ipr_eh_host_reset - Reset the host adapter
3691 * @scsi_cmd: scsi command struct
3696 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
3698 struct ipr_ioa_cfg *ioa_cfg;
3702 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3704 dev_err(&ioa_cfg->pdev->dev,
3705 "Adapter being reset as a result of error recovery.\n");
3707 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3708 ioa_cfg->sdt_state = GET_DUMP;
3710 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3716 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3720 spin_lock_irq(cmd->device->host->host_lock);
3721 rc = __ipr_eh_host_reset(cmd);
3722 spin_unlock_irq(cmd->device->host->host_lock);
3728 * ipr_device_reset - Reset the device
3729 * @ioa_cfg: ioa config struct
3730 * @res: resource entry struct
3732 * This function issues a device reset to the affected device.
3733 * If the device is a SCSI device, a LUN reset will be sent
3734 * to the device first. If that does not work, a target reset
3735 * will be sent. If the device is a SATA device, a PHY reset will
3739 * 0 on success / non-zero on failure
3741 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3742 struct ipr_resource_entry *res)
3744 struct ipr_cmnd *ipr_cmd;
3745 struct ipr_ioarcb *ioarcb;
3746 struct ipr_cmd_pkt *cmd_pkt;
3747 struct ipr_ioarcb_ata_regs *regs;
3751 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3752 ioarcb = &ipr_cmd->ioarcb;
3753 cmd_pkt = &ioarcb->cmd_pkt;
3754 regs = &ioarcb->add_data.u.regs;
3756 ioarcb->res_handle = res->cfgte.res_handle;
3757 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3758 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3759 if (ipr_is_gata(res)) {
3760 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3761 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3762 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3765 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3766 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3767 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3768 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3769 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3770 sizeof(struct ipr_ioasa_gata));
3773 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3777 * ipr_sata_reset - Reset the SATA port
3778 * @ap: SATA port to reset
3779 * @classes: class of the attached device
3781 * This function issues a SATA phy reset to the affected ATA port.
3784 * 0 on success / non-zero on failure
3786 static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes,
3787 unsigned long deadline)
3789 struct ipr_sata_port *sata_port = ap->private_data;
3790 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3791 struct ipr_resource_entry *res;
3792 unsigned long lock_flags = 0;
3796 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3797 while(ioa_cfg->in_reset_reload) {
3798 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3799 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3800 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3803 res = sata_port->res;
3805 rc = ipr_device_reset(ioa_cfg, res);
3806 switch(res->cfgte.proto) {
3807 case IPR_PROTO_SATA:
3808 case IPR_PROTO_SAS_STP:
3809 *classes = ATA_DEV_ATA;
3811 case IPR_PROTO_SATA_ATAPI:
3812 case IPR_PROTO_SAS_STP_ATAPI:
3813 *classes = ATA_DEV_ATAPI;
3816 *classes = ATA_DEV_UNKNOWN;
3821 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3827 * ipr_eh_dev_reset - Reset the device
3828 * @scsi_cmd: scsi command struct
3830 * This function issues a device reset to the affected device.
3831 * A LUN reset will be sent to the device first. If that does
3832 * not work, a target reset will be sent.
3837 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
3839 struct ipr_cmnd *ipr_cmd;
3840 struct ipr_ioa_cfg *ioa_cfg;
3841 struct ipr_resource_entry *res;
3842 struct ata_port *ap;
3846 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3847 res = scsi_cmd->device->hostdata;
3853 * If we are currently going through reset/reload, return failed. This will force the
3854 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3857 if (ioa_cfg->in_reset_reload)
3859 if (ioa_cfg->ioa_is_dead)
3862 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3863 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3864 if (ipr_cmd->scsi_cmd)
3865 ipr_cmd->done = ipr_scsi_eh_done;
3867 ipr_cmd->done = ipr_sata_eh_done;
3868 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3869 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3870 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3875 res->resetting_device = 1;
3876 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
3878 if (ipr_is_gata(res) && res->sata_port) {
3879 ap = res->sata_port->ap;
3880 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3881 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3882 spin_lock_irq(scsi_cmd->device->host->host_lock);
3884 rc = ipr_device_reset(ioa_cfg, res);
3885 res->resetting_device = 0;
3888 return (rc ? FAILED : SUCCESS);
3891 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3895 spin_lock_irq(cmd->device->host->host_lock);
3896 rc = __ipr_eh_dev_reset(cmd);
3897 spin_unlock_irq(cmd->device->host->host_lock);
3903 * ipr_bus_reset_done - Op done function for bus reset.
3904 * @ipr_cmd: ipr command struct
3906 * This function is the op done function for a bus reset
3911 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3913 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3914 struct ipr_resource_entry *res;
3917 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3918 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3919 sizeof(res->cfgte.res_handle))) {
3920 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3926 * If abort has not completed, indicate the reset has, else call the
3927 * abort's done function to wake the sleeping eh thread
3929 if (ipr_cmd->sibling->sibling)
3930 ipr_cmd->sibling->sibling = NULL;
3932 ipr_cmd->sibling->done(ipr_cmd->sibling);
3934 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3939 * ipr_abort_timeout - An abort task has timed out
3940 * @ipr_cmd: ipr command struct
3942 * This function handles when an abort task times out. If this
3943 * happens we issue a bus reset since we have resources tied
3944 * up that must be freed before returning to the midlayer.
3949 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3951 struct ipr_cmnd *reset_cmd;
3952 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3953 struct ipr_cmd_pkt *cmd_pkt;
3954 unsigned long lock_flags = 0;
3957 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3958 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3959 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3963 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
3964 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3965 ipr_cmd->sibling = reset_cmd;
3966 reset_cmd->sibling = ipr_cmd;
3967 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3968 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3969 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3970 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3971 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3973 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3974 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3979 * ipr_cancel_op - Cancel specified op
3980 * @scsi_cmd: scsi command struct
3982 * This function cancels specified op.
3987 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3989 struct ipr_cmnd *ipr_cmd;
3990 struct ipr_ioa_cfg *ioa_cfg;
3991 struct ipr_resource_entry *res;
3992 struct ipr_cmd_pkt *cmd_pkt;
3997 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3998 res = scsi_cmd->device->hostdata;
4000 /* If we are currently going through reset/reload, return failed.
4001 * This will force the mid-layer to call ipr_eh_host_reset,
4002 * which will then go to sleep and wait for the reset to complete
4004 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4006 if (!res || !ipr_is_gscsi(res))
4009 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4010 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4011 ipr_cmd->done = ipr_scsi_eh_done;
4020 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4021 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4022 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4023 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4024 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4025 ipr_cmd->u.sdev = scsi_cmd->device;
4027 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4029 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4030 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4033 * If the abort task timed out and we sent a bus reset, we will get
4034 * one the following responses to the abort
4036 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4041 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4042 if (!ipr_is_naca_model(res))
4043 res->needs_sync_complete = 1;
4046 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4050 * ipr_eh_abort - Abort a single op
4051 * @scsi_cmd: scsi command struct
4056 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4058 unsigned long flags;
4063 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4064 rc = ipr_cancel_op(scsi_cmd);
4065 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4072 * ipr_handle_other_interrupt - Handle "other" interrupts
4073 * @ioa_cfg: ioa config struct
4074 * @int_reg: interrupt register
4077 * IRQ_NONE / IRQ_HANDLED
4079 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4080 volatile u32 int_reg)
4082 irqreturn_t rc = IRQ_HANDLED;
4084 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4085 /* Mask the interrupt */
4086 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4088 /* Clear the interrupt */
4089 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4090 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4092 list_del(&ioa_cfg->reset_cmd->queue);
4093 del_timer(&ioa_cfg->reset_cmd->timer);
4094 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4096 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4097 ioa_cfg->ioa_unit_checked = 1;
4099 dev_err(&ioa_cfg->pdev->dev,
4100 "Permanent IOA failure. 0x%08X\n", int_reg);
4102 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4103 ioa_cfg->sdt_state = GET_DUMP;
4105 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4106 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4113 * ipr_isr - Interrupt service routine
4115 * @devp: pointer to ioa config struct
4118 * IRQ_NONE / IRQ_HANDLED
4120 static irqreturn_t ipr_isr(int irq, void *devp)
4122 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4123 unsigned long lock_flags = 0;
4124 volatile u32 int_reg, int_mask_reg;
4127 struct ipr_cmnd *ipr_cmd;
4128 irqreturn_t rc = IRQ_NONE;
4130 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4132 /* If interrupts are disabled, ignore the interrupt */
4133 if (!ioa_cfg->allow_interrupts) {
4134 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4138 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4139 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4141 /* If an interrupt on the adapter did not occur, ignore it */
4142 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4143 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4150 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4151 ioa_cfg->toggle_bit) {
4153 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4154 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4156 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4157 ioa_cfg->errors_logged++;
4158 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4160 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4161 ioa_cfg->sdt_state = GET_DUMP;
4163 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4164 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4168 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4170 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4172 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4174 list_del(&ipr_cmd->queue);
4175 del_timer(&ipr_cmd->timer);
4176 ipr_cmd->done(ipr_cmd);
4180 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4181 ioa_cfg->hrrq_curr++;
4183 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4184 ioa_cfg->toggle_bit ^= 1u;
4188 if (ipr_cmd != NULL) {
4189 /* Clear the PCI interrupt */
4190 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4191 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4196 if (unlikely(rc == IRQ_NONE))
4197 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4199 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4204 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4205 * @ioa_cfg: ioa config struct
4206 * @ipr_cmd: ipr command struct
4209 * 0 on success / -1 on failure
4211 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4212 struct ipr_cmnd *ipr_cmd)
4215 struct scatterlist *sglist;
4217 u32 ioadl_flags = 0;
4218 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4219 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4220 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4222 length = scsi_cmd->request_bufflen;
4227 if (scsi_cmd->use_sg) {
4228 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
4229 scsi_cmd->request_buffer,
4231 scsi_cmd->sc_data_direction);
4233 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4234 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4235 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4236 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4237 ioarcb->write_ioadl_len =
4238 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4239 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4240 ioadl_flags = IPR_IOADL_FLAGS_READ;
4241 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4242 ioarcb->read_ioadl_len =
4243 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4246 sglist = scsi_cmd->request_buffer;
4248 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4249 ioadl = ioarcb->add_data.u.ioadl;
4250 ioarcb->write_ioadl_addr =
4251 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4252 offsetof(struct ipr_ioarcb, add_data));
4253 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4256 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
4257 ioadl[i].flags_and_data_len =
4258 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
4260 cpu_to_be32(sg_dma_address(&sglist[i]));
4263 if (likely(ipr_cmd->dma_use_sg)) {
4264 ioadl[i-1].flags_and_data_len |=
4265 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4268 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4270 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4271 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4272 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4273 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4274 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4275 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4276 ioadl_flags = IPR_IOADL_FLAGS_READ;
4277 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4278 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4281 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
4282 scsi_cmd->request_buffer, length,
4283 scsi_cmd->sc_data_direction);
4285 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
4286 ioadl = ioarcb->add_data.u.ioadl;
4287 ioarcb->write_ioadl_addr =
4288 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4289 offsetof(struct ipr_ioarcb, add_data));
4290 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4291 ipr_cmd->dma_use_sg = 1;
4292 ioadl[0].flags_and_data_len =
4293 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
4294 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
4297 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
4304 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4305 * @scsi_cmd: scsi command struct
4310 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4313 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4315 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4317 case MSG_SIMPLE_TAG:
4318 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4321 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4323 case MSG_ORDERED_TAG:
4324 rc = IPR_FLAGS_LO_ORDERED_TASK;
4333 * ipr_erp_done - Process completion of ERP for a device
4334 * @ipr_cmd: ipr command struct
4336 * This function copies the sense buffer into the scsi_cmd
4337 * struct and pushes the scsi_done function.
4342 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4344 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4345 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4346 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4347 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4349 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4350 scsi_cmd->result |= (DID_ERROR << 16);
4351 scmd_printk(KERN_ERR, scsi_cmd,
4352 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
4354 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4355 SCSI_SENSE_BUFFERSIZE);
4359 if (!ipr_is_naca_model(res))
4360 res->needs_sync_complete = 1;
4363 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4364 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4365 scsi_cmd->scsi_done(scsi_cmd);
4369 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4370 * @ipr_cmd: ipr command struct
4375 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4377 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4378 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4379 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
4381 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4382 ioarcb->write_data_transfer_length = 0;
4383 ioarcb->read_data_transfer_length = 0;
4384 ioarcb->write_ioadl_len = 0;
4385 ioarcb->read_ioadl_len = 0;
4387 ioasa->residual_data_len = 0;
4388 ioarcb->write_ioadl_addr =
4389 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4390 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4394 * ipr_erp_request_sense - Send request sense to a device
4395 * @ipr_cmd: ipr command struct
4397 * This function sends a request sense to a device as a result
4398 * of a check condition.
4403 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4405 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4406 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4408 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4409 ipr_erp_done(ipr_cmd);
4413 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4415 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4416 cmd_pkt->cdb[0] = REQUEST_SENSE;
4417 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4418 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4419 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4420 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4422 ipr_cmd->ioadl[0].flags_and_data_len =
4423 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4424 ipr_cmd->ioadl[0].address =
4425 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4427 ipr_cmd->ioarcb.read_ioadl_len =
4428 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4429 ipr_cmd->ioarcb.read_data_transfer_length =
4430 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4432 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4433 IPR_REQUEST_SENSE_TIMEOUT * 2);
4437 * ipr_erp_cancel_all - Send cancel all to a device
4438 * @ipr_cmd: ipr command struct
4440 * This function sends a cancel all to a device to clear the
4441 * queue. If we are running TCQ on the device, QERR is set to 1,
4442 * which means all outstanding ops have been dropped on the floor.
4443 * Cancel all will return them to us.
4448 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4450 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4451 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4452 struct ipr_cmd_pkt *cmd_pkt;
4456 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4458 if (!scsi_get_tag_type(scsi_cmd->device)) {
4459 ipr_erp_request_sense(ipr_cmd);
4463 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4464 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4465 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4467 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4468 IPR_CANCEL_ALL_TIMEOUT);
4472 * ipr_dump_ioasa - Dump contents of IOASA
4473 * @ioa_cfg: ioa config struct
4474 * @ipr_cmd: ipr command struct
4475 * @res: resource entry struct
4477 * This function is invoked by the interrupt handler when ops
4478 * fail. It will log the IOASA if appropriate. Only called
4484 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
4485 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
4489 u32 ioasc, fd_ioasc;
4490 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4491 __be32 *ioasa_data = (__be32 *)ioasa;
4494 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
4495 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
4500 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4503 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4504 error_index = ipr_get_error(fd_ioasc);
4506 error_index = ipr_get_error(ioasc);
4508 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4509 /* Don't log an error if the IOA already logged one */
4510 if (ioasa->ilid != 0)
4513 if (!ipr_is_gscsi(res))
4516 if (ipr_error_table[error_index].log_ioasa == 0)
4520 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
4522 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4523 data_len = sizeof(struct ipr_ioasa);
4525 data_len = be16_to_cpu(ioasa->ret_stat_len);
4527 ipr_err("IOASA Dump:\n");
4529 for (i = 0; i < data_len / 4; i += 4) {
4530 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4531 be32_to_cpu(ioasa_data[i]),
4532 be32_to_cpu(ioasa_data[i+1]),
4533 be32_to_cpu(ioasa_data[i+2]),
4534 be32_to_cpu(ioasa_data[i+3]));
4539 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4541 * @sense_buf: sense data buffer
4546 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4549 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4550 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4551 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4552 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4554 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4556 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4559 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4561 if (ipr_is_vset_device(res) &&
4562 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4563 ioasa->u.vset.failing_lba_hi != 0) {
4564 sense_buf[0] = 0x72;
4565 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4566 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4567 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4571 sense_buf[9] = 0x0A;
4572 sense_buf[10] = 0x80;
4574 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4576 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4577 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4578 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4579 sense_buf[15] = failing_lba & 0x000000ff;
4581 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4583 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4584 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4585 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4586 sense_buf[19] = failing_lba & 0x000000ff;
4588 sense_buf[0] = 0x70;
4589 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4590 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4591 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4593 /* Illegal request */
4594 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4595 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4596 sense_buf[7] = 10; /* additional length */
4598 /* IOARCB was in error */
4599 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4600 sense_buf[15] = 0xC0;
4601 else /* Parameter data was invalid */
4602 sense_buf[15] = 0x80;
4605 ((IPR_FIELD_POINTER_MASK &
4606 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4608 (IPR_FIELD_POINTER_MASK &
4609 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4611 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4612 if (ipr_is_vset_device(res))
4613 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4615 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4617 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4618 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4619 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4620 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4621 sense_buf[6] = failing_lba & 0x000000ff;
4624 sense_buf[7] = 6; /* additional length */
4630 * ipr_get_autosense - Copy autosense data to sense buffer
4631 * @ipr_cmd: ipr command struct
4633 * This function copies the autosense buffer to the buffer
4634 * in the scsi_cmd, if there is autosense available.
4637 * 1 if autosense was available / 0 if not
4639 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4641 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4643 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
4646 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4647 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4648 SCSI_SENSE_BUFFERSIZE));
4653 * ipr_erp_start - Process an error response for a SCSI op
4654 * @ioa_cfg: ioa config struct
4655 * @ipr_cmd: ipr command struct
4657 * This function determines whether or not to initiate ERP
4658 * on the affected device.
4663 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4664 struct ipr_cmnd *ipr_cmd)
4666 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4667 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4668 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4669 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
4672 ipr_scsi_eh_done(ipr_cmd);
4676 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
4677 ipr_gen_sense(ipr_cmd);
4679 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4681 switch (masked_ioasc) {
4682 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
4683 if (ipr_is_naca_model(res))
4684 scsi_cmd->result |= (DID_ABORT << 16);
4686 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4688 case IPR_IOASC_IR_RESOURCE_HANDLE:
4689 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
4690 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4692 case IPR_IOASC_HW_SEL_TIMEOUT:
4693 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4694 if (!ipr_is_naca_model(res))
4695 res->needs_sync_complete = 1;
4697 case IPR_IOASC_SYNC_REQUIRED:
4699 res->needs_sync_complete = 1;
4700 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4702 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
4703 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
4704 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4706 case IPR_IOASC_BUS_WAS_RESET:
4707 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4709 * Report the bus reset and ask for a retry. The device
4710 * will give CC/UA the next command.
4712 if (!res->resetting_device)
4713 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4714 scsi_cmd->result |= (DID_ERROR << 16);
4715 if (!ipr_is_naca_model(res))
4716 res->needs_sync_complete = 1;
4718 case IPR_IOASC_HW_DEV_BUS_STATUS:
4719 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4720 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
4721 if (!ipr_get_autosense(ipr_cmd)) {
4722 if (!ipr_is_naca_model(res)) {
4723 ipr_erp_cancel_all(ipr_cmd);
4728 if (!ipr_is_naca_model(res))
4729 res->needs_sync_complete = 1;
4731 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4734 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4735 scsi_cmd->result |= (DID_ERROR << 16);
4736 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
4737 res->needs_sync_complete = 1;
4741 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4742 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4743 scsi_cmd->scsi_done(scsi_cmd);
4747 * ipr_scsi_done - mid-layer done function
4748 * @ipr_cmd: ipr command struct
4750 * This function is invoked by the interrupt handler for
4751 * ops generated by the SCSI mid-layer
4756 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4758 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4759 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4760 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4762 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
4764 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4765 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4766 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4767 scsi_cmd->scsi_done(scsi_cmd);
4769 ipr_erp_start(ioa_cfg, ipr_cmd);
4773 * ipr_queuecommand - Queue a mid-layer request
4774 * @scsi_cmd: scsi command struct
4775 * @done: done function
4777 * This function queues a request generated by the mid-layer.
4781 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4782 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4784 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4785 void (*done) (struct scsi_cmnd *))
4787 struct ipr_ioa_cfg *ioa_cfg;
4788 struct ipr_resource_entry *res;
4789 struct ipr_ioarcb *ioarcb;
4790 struct ipr_cmnd *ipr_cmd;
4793 scsi_cmd->scsi_done = done;
4794 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4795 res = scsi_cmd->device->hostdata;
4796 scsi_cmd->result = (DID_OK << 16);
4799 * We are currently blocking all devices due to a host reset
4800 * We have told the host to stop giving us new requests, but
4801 * ERP ops don't count. FIXME
4803 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4804 return SCSI_MLQUEUE_HOST_BUSY;
4807 * FIXME - Create scsi_set_host_offline interface
4808 * and the ioa_is_dead check can be removed
4810 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4811 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4812 scsi_cmd->result = (DID_NO_CONNECT << 16);
4813 scsi_cmd->scsi_done(scsi_cmd);
4817 if (ipr_is_gata(res) && res->sata_port)
4818 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4820 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4821 ioarcb = &ipr_cmd->ioarcb;
4822 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4824 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4825 ipr_cmd->scsi_cmd = scsi_cmd;
4826 ioarcb->res_handle = res->cfgte.res_handle;
4827 ipr_cmd->done = ipr_scsi_done;
4828 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4830 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4831 if (scsi_cmd->underflow == 0)
4832 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4834 if (res->needs_sync_complete) {
4835 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4836 res->needs_sync_complete = 0;
4839 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4840 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4841 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4842 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4845 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4846 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4847 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4849 if (likely(rc == 0))
4850 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4852 if (likely(rc == 0)) {
4854 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4855 ioa_cfg->regs.ioarrin_reg);
4857 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4858 return SCSI_MLQUEUE_HOST_BUSY;
4865 * ipr_ioctl - IOCTL handler
4866 * @sdev: scsi device struct
4871 * 0 on success / other on failure
4873 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
4875 struct ipr_resource_entry *res;
4877 res = (struct ipr_resource_entry *)sdev->hostdata;
4878 if (res && ipr_is_gata(res))
4879 return ata_scsi_ioctl(sdev, cmd, arg);
4885 * ipr_info - Get information about the card/driver
4886 * @scsi_host: scsi host struct
4889 * pointer to buffer with description string
4891 static const char * ipr_ioa_info(struct Scsi_Host *host)
4893 static char buffer[512];
4894 struct ipr_ioa_cfg *ioa_cfg;
4895 unsigned long lock_flags = 0;
4897 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4899 spin_lock_irqsave(host->host_lock, lock_flags);
4900 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4901 spin_unlock_irqrestore(host->host_lock, lock_flags);
4906 static struct scsi_host_template driver_template = {
4907 .module = THIS_MODULE,
4909 .info = ipr_ioa_info,
4911 .queuecommand = ipr_queuecommand,
4912 .eh_abort_handler = ipr_eh_abort,
4913 .eh_device_reset_handler = ipr_eh_dev_reset,
4914 .eh_host_reset_handler = ipr_eh_host_reset,
4915 .slave_alloc = ipr_slave_alloc,
4916 .slave_configure = ipr_slave_configure,
4917 .slave_destroy = ipr_slave_destroy,
4918 .target_alloc = ipr_target_alloc,
4919 .target_destroy = ipr_target_destroy,
4920 .change_queue_depth = ipr_change_queue_depth,
4921 .change_queue_type = ipr_change_queue_type,
4922 .bios_param = ipr_biosparam,
4923 .can_queue = IPR_MAX_COMMANDS,
4925 .sg_tablesize = IPR_MAX_SGLIST,
4926 .max_sectors = IPR_IOA_MAX_SECTORS,
4927 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4928 .use_clustering = ENABLE_CLUSTERING,
4929 .shost_attrs = ipr_ioa_attrs,
4930 .sdev_attrs = ipr_dev_attrs,
4931 .proc_name = IPR_NAME
4935 * ipr_ata_phy_reset - libata phy_reset handler
4936 * @ap: ata port to reset
4939 static void ipr_ata_phy_reset(struct ata_port *ap)
4941 unsigned long flags;
4942 struct ipr_sata_port *sata_port = ap->private_data;
4943 struct ipr_resource_entry *res = sata_port->res;
4944 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4948 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4949 while(ioa_cfg->in_reset_reload) {
4950 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4951 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4952 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4955 if (!ioa_cfg->allow_cmds)
4958 rc = ipr_device_reset(ioa_cfg, res);
4961 ap->ops->port_disable(ap);
4965 switch(res->cfgte.proto) {
4966 case IPR_PROTO_SATA:
4967 case IPR_PROTO_SAS_STP:
4968 ap->device[0].class = ATA_DEV_ATA;
4970 case IPR_PROTO_SATA_ATAPI:
4971 case IPR_PROTO_SAS_STP_ATAPI:
4972 ap->device[0].class = ATA_DEV_ATAPI;
4975 ap->device[0].class = ATA_DEV_UNKNOWN;
4976 ap->ops->port_disable(ap);
4981 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4986 * ipr_ata_post_internal - Cleanup after an internal command
4987 * @qc: ATA queued command
4992 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
4994 struct ipr_sata_port *sata_port = qc->ap->private_data;
4995 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4996 struct ipr_cmnd *ipr_cmd;
4997 unsigned long flags;
4999 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5000 while(ioa_cfg->in_reset_reload) {
5001 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5002 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5003 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5006 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5007 if (ipr_cmd->qc == qc) {
5008 ipr_device_reset(ioa_cfg, sata_port->res);
5012 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5016 * ipr_tf_read - Read the current ATA taskfile for the ATA port
5018 * @tf: destination ATA taskfile
5023 static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
5025 struct ipr_sata_port *sata_port = ap->private_data;
5026 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5028 tf->feature = g->error;
5029 tf->nsect = g->nsect;
5033 tf->device = g->device;
5034 tf->command = g->status;
5035 tf->hob_nsect = g->hob_nsect;
5036 tf->hob_lbal = g->hob_lbal;
5037 tf->hob_lbam = g->hob_lbam;
5038 tf->hob_lbah = g->hob_lbah;
5039 tf->ctl = g->alt_status;
5043 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5044 * @regs: destination
5045 * @tf: source ATA taskfile
5050 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5051 struct ata_taskfile *tf)
5053 regs->feature = tf->feature;
5054 regs->nsect = tf->nsect;
5055 regs->lbal = tf->lbal;
5056 regs->lbam = tf->lbam;
5057 regs->lbah = tf->lbah;
5058 regs->device = tf->device;
5059 regs->command = tf->command;
5060 regs->hob_feature = tf->hob_feature;
5061 regs->hob_nsect = tf->hob_nsect;
5062 regs->hob_lbal = tf->hob_lbal;
5063 regs->hob_lbam = tf->hob_lbam;
5064 regs->hob_lbah = tf->hob_lbah;
5065 regs->ctl = tf->ctl;
5069 * ipr_sata_done - done function for SATA commands
5070 * @ipr_cmd: ipr command struct
5072 * This function is invoked by the interrupt handler for
5073 * ops generated by the SCSI mid-layer to SATA devices
5078 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5080 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5081 struct ata_queued_cmd *qc = ipr_cmd->qc;
5082 struct ipr_sata_port *sata_port = qc->ap->private_data;
5083 struct ipr_resource_entry *res = sata_port->res;
5084 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5086 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5087 sizeof(struct ipr_ioasa_gata));
5088 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5090 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5091 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5092 res->cfgte.res_addr.target);
5094 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5095 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5097 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5098 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5099 ata_qc_complete(qc);
5103 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5104 * @ipr_cmd: ipr command struct
5105 * @qc: ATA queued command
5108 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5109 struct ata_queued_cmd *qc)
5111 u32 ioadl_flags = 0;
5112 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5113 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5114 int len = qc->nbytes + qc->pad_len;
5115 struct scatterlist *sg;
5120 if (qc->dma_dir == DMA_TO_DEVICE) {
5121 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5122 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5123 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5124 ioarcb->write_ioadl_len =
5125 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5126 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5127 ioadl_flags = IPR_IOADL_FLAGS_READ;
5128 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5129 ioarcb->read_ioadl_len =
5130 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5133 ata_for_each_sg(sg, qc) {
5134 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5135 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5136 if (ata_sg_is_last(sg, qc))
5137 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5144 * ipr_qc_issue - Issue a SATA qc to a device
5145 * @qc: queued command
5150 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5152 struct ata_port *ap = qc->ap;
5153 struct ipr_sata_port *sata_port = ap->private_data;
5154 struct ipr_resource_entry *res = sata_port->res;
5155 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5156 struct ipr_cmnd *ipr_cmd;
5157 struct ipr_ioarcb *ioarcb;
5158 struct ipr_ioarcb_ata_regs *regs;
5160 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
5161 return AC_ERR_SYSTEM;
5163 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5164 ioarcb = &ipr_cmd->ioarcb;
5165 regs = &ioarcb->add_data.u.regs;
5167 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5168 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5170 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5172 ipr_cmd->done = ipr_sata_done;
5173 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5174 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5175 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5176 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5177 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
5179 ipr_build_ata_ioadl(ipr_cmd, qc);
5180 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5181 ipr_copy_sata_tf(regs, &qc->tf);
5182 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5183 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5185 switch (qc->tf.protocol) {
5186 case ATA_PROT_NODATA:
5191 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5194 case ATA_PROT_ATAPI:
5195 case ATA_PROT_ATAPI_NODATA:
5196 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5199 case ATA_PROT_ATAPI_DMA:
5200 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5201 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5206 return AC_ERR_INVALID;
5210 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5211 ioa_cfg->regs.ioarrin_reg);
5216 * ipr_ata_check_status - Return last ATA status
5222 static u8 ipr_ata_check_status(struct ata_port *ap)
5224 struct ipr_sata_port *sata_port = ap->private_data;
5225 return sata_port->ioasa.status;
5229 * ipr_ata_check_altstatus - Return last ATA altstatus
5235 static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5237 struct ipr_sata_port *sata_port = ap->private_data;
5238 return sata_port->ioasa.alt_status;
5241 static struct ata_port_operations ipr_sata_ops = {
5242 .port_disable = ata_port_disable,
5243 .check_status = ipr_ata_check_status,
5244 .check_altstatus = ipr_ata_check_altstatus,
5245 .dev_select = ata_noop_dev_select,
5246 .phy_reset = ipr_ata_phy_reset,
5247 .post_internal_cmd = ipr_ata_post_internal,
5248 .tf_read = ipr_tf_read,
5249 .qc_prep = ata_noop_qc_prep,
5250 .qc_issue = ipr_qc_issue,
5251 .port_start = ata_sas_port_start,
5252 .port_stop = ata_sas_port_stop
5255 static struct ata_port_info sata_port_info = {
5256 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5257 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5258 .pio_mask = 0x10, /* pio4 */
5260 .udma_mask = 0x7f, /* udma0-6 */
5261 .port_ops = &ipr_sata_ops
5264 #ifdef CONFIG_PPC_PSERIES
5265 static const u16 ipr_blocked_processors[] = {
5277 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5278 * @ioa_cfg: ioa cfg struct
5280 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5281 * certain pSeries hardware. This function determines if the given
5282 * adapter is in one of these confgurations or not.
5285 * 1 if adapter is not supported / 0 if adapter is supported
5287 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5292 if (ioa_cfg->type == 0x5702) {
5293 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
5294 &rev_id) == PCIBIOS_SUCCESSFUL) {
5296 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5297 if (__is_processor(ipr_blocked_processors[i]))
5306 #define ipr_invalid_adapter(ioa_cfg) 0
5310 * ipr_ioa_bringdown_done - IOA bring down completion.
5311 * @ipr_cmd: ipr command struct
5313 * This function processes the completion of an adapter bring down.
5314 * It wakes any reset sleepers.
5319 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5321 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5324 ioa_cfg->in_reset_reload = 0;
5325 ioa_cfg->reset_retries = 0;
5326 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5327 wake_up_all(&ioa_cfg->reset_wait_q);
5329 spin_unlock_irq(ioa_cfg->host->host_lock);
5330 scsi_unblock_requests(ioa_cfg->host);
5331 spin_lock_irq(ioa_cfg->host->host_lock);
5334 return IPR_RC_JOB_RETURN;
5338 * ipr_ioa_reset_done - IOA reset completion.
5339 * @ipr_cmd: ipr command struct
5341 * This function processes the completion of an adapter reset.
5342 * It schedules any necessary mid-layer add/removes and
5343 * wakes any reset sleepers.
5348 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5350 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5351 struct ipr_resource_entry *res;
5352 struct ipr_hostrcb *hostrcb, *temp;
5356 ioa_cfg->in_reset_reload = 0;
5357 ioa_cfg->allow_cmds = 1;
5358 ioa_cfg->reset_cmd = NULL;
5359 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
5361 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5362 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5367 schedule_work(&ioa_cfg->work_q);
5369 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5370 list_del(&hostrcb->queue);
5371 if (i++ < IPR_NUM_LOG_HCAMS)
5372 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5374 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5377 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
5378 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5380 ioa_cfg->reset_retries = 0;
5381 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5382 wake_up_all(&ioa_cfg->reset_wait_q);
5384 spin_unlock_irq(ioa_cfg->host->host_lock);
5385 scsi_unblock_requests(ioa_cfg->host);
5386 spin_lock_irq(ioa_cfg->host->host_lock);
5388 if (!ioa_cfg->allow_cmds)
5389 scsi_block_requests(ioa_cfg->host);
5392 return IPR_RC_JOB_RETURN;
5396 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5397 * @supported_dev: supported device struct
5398 * @vpids: vendor product id struct
5403 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5404 struct ipr_std_inq_vpids *vpids)
5406 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5407 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5408 supported_dev->num_records = 1;
5409 supported_dev->data_length =
5410 cpu_to_be16(sizeof(struct ipr_supported_device));
5411 supported_dev->reserved = 0;
5415 * ipr_set_supported_devs - Send Set Supported Devices for a device
5416 * @ipr_cmd: ipr command struct
5418 * This function send a Set Supported Devices to the adapter
5421 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5423 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5425 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5426 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5427 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5428 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5429 struct ipr_resource_entry *res = ipr_cmd->u.res;
5431 ipr_cmd->job_step = ipr_ioa_reset_done;
5433 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
5434 if (!ipr_is_scsi_disk(res))
5437 ipr_cmd->u.res = res;
5438 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5440 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5441 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5442 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5444 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5445 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5446 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5448 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5449 sizeof(struct ipr_supported_device));
5450 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5451 offsetof(struct ipr_misc_cbs, supp_dev));
5452 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5453 ioarcb->write_data_transfer_length =
5454 cpu_to_be32(sizeof(struct ipr_supported_device));
5456 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5457 IPR_SET_SUP_DEVICE_TIMEOUT);
5459 ipr_cmd->job_step = ipr_set_supported_devs;
5460 return IPR_RC_JOB_RETURN;
5463 return IPR_RC_JOB_CONTINUE;
5467 * ipr_setup_write_cache - Disable write cache if needed
5468 * @ipr_cmd: ipr command struct
5470 * This function sets up adapters write cache to desired setting
5473 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5475 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5477 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5479 ipr_cmd->job_step = ipr_set_supported_devs;
5480 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5481 struct ipr_resource_entry, queue);
5483 if (ioa_cfg->cache_state != CACHE_DISABLED)
5484 return IPR_RC_JOB_CONTINUE;
5486 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5487 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5488 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5489 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5491 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5493 return IPR_RC_JOB_RETURN;
5497 * ipr_get_mode_page - Locate specified mode page
5498 * @mode_pages: mode page buffer
5499 * @page_code: page code to find
5500 * @len: minimum required length for mode page
5503 * pointer to mode page / NULL on failure
5505 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5506 u32 page_code, u32 len)
5508 struct ipr_mode_page_hdr *mode_hdr;
5512 if (!mode_pages || (mode_pages->hdr.length == 0))
5515 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5516 mode_hdr = (struct ipr_mode_page_hdr *)
5517 (mode_pages->data + mode_pages->hdr.block_desc_len);
5520 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5521 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5525 page_length = (sizeof(struct ipr_mode_page_hdr) +
5526 mode_hdr->page_length);
5527 length -= page_length;
5528 mode_hdr = (struct ipr_mode_page_hdr *)
5529 ((unsigned long)mode_hdr + page_length);
5536 * ipr_check_term_power - Check for term power errors
5537 * @ioa_cfg: ioa config struct
5538 * @mode_pages: IOAFP mode pages buffer
5540 * Check the IOAFP's mode page 28 for term power errors
5545 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5546 struct ipr_mode_pages *mode_pages)
5550 struct ipr_dev_bus_entry *bus;
5551 struct ipr_mode_page28 *mode_page;
5553 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5554 sizeof(struct ipr_mode_page28));
5556 entry_length = mode_page->entry_length;
5558 bus = mode_page->bus;
5560 for (i = 0; i < mode_page->num_entries; i++) {
5561 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5562 dev_err(&ioa_cfg->pdev->dev,
5563 "Term power is absent on scsi bus %d\n",
5567 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5572 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5573 * @ioa_cfg: ioa config struct
5575 * Looks through the config table checking for SES devices. If
5576 * the SES device is in the SES table indicating a maximum SCSI
5577 * bus speed, the speed is limited for the bus.
5582 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5587 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5588 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5589 ioa_cfg->bus_attr[i].bus_width);
5591 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5592 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5597 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5598 * @ioa_cfg: ioa config struct
5599 * @mode_pages: mode page 28 buffer
5601 * Updates mode page 28 based on driver configuration
5606 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5607 struct ipr_mode_pages *mode_pages)
5609 int i, entry_length;
5610 struct ipr_dev_bus_entry *bus;
5611 struct ipr_bus_attributes *bus_attr;
5612 struct ipr_mode_page28 *mode_page;
5614 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5615 sizeof(struct ipr_mode_page28));
5617 entry_length = mode_page->entry_length;
5619 /* Loop for each device bus entry */
5620 for (i = 0, bus = mode_page->bus;
5621 i < mode_page->num_entries;
5622 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5623 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5624 dev_err(&ioa_cfg->pdev->dev,
5625 "Invalid resource address reported: 0x%08X\n",
5626 IPR_GET_PHYS_LOC(bus->res_addr));
5630 bus_attr = &ioa_cfg->bus_attr[i];
5631 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5632 bus->bus_width = bus_attr->bus_width;
5633 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5634 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5635 if (bus_attr->qas_enabled)
5636 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5638 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5643 * ipr_build_mode_select - Build a mode select command
5644 * @ipr_cmd: ipr command struct
5645 * @res_handle: resource handle to send command to
5646 * @parm: Byte 2 of Mode Sense command
5647 * @dma_addr: DMA buffer address
5648 * @xfer_len: data transfer length
5653 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5654 __be32 res_handle, u8 parm, u32 dma_addr,
5657 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5658 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5660 ioarcb->res_handle = res_handle;
5661 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5662 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5663 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5664 ioarcb->cmd_pkt.cdb[1] = parm;
5665 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5667 ioadl->flags_and_data_len =
5668 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5669 ioadl->address = cpu_to_be32(dma_addr);
5670 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5671 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5675 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5676 * @ipr_cmd: ipr command struct
5678 * This function sets up the SCSI bus attributes and sends
5679 * a Mode Select for Page 28 to activate them.
5684 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5686 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5687 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5691 ipr_scsi_bus_speed_limit(ioa_cfg);
5692 ipr_check_term_power(ioa_cfg, mode_pages);
5693 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5694 length = mode_pages->hdr.length + 1;
5695 mode_pages->hdr.length = 0;
5697 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5698 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5701 ipr_cmd->job_step = ipr_setup_write_cache;
5702 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5705 return IPR_RC_JOB_RETURN;
5709 * ipr_build_mode_sense - Builds a mode sense command
5710 * @ipr_cmd: ipr command struct
5711 * @res: resource entry struct
5712 * @parm: Byte 2 of mode sense command
5713 * @dma_addr: DMA address of mode sense buffer
5714 * @xfer_len: Size of DMA buffer
5719 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5721 u8 parm, u32 dma_addr, u8 xfer_len)
5723 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5724 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5726 ioarcb->res_handle = res_handle;
5727 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5728 ioarcb->cmd_pkt.cdb[2] = parm;
5729 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5730 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5732 ioadl->flags_and_data_len =
5733 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5734 ioadl->address = cpu_to_be32(dma_addr);
5735 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5736 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5740 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5741 * @ipr_cmd: ipr command struct
5743 * This function handles the failure of an IOA bringup command.
5748 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5750 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5751 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5753 dev_err(&ioa_cfg->pdev->dev,
5754 "0x%02X failed with IOASC: 0x%08X\n",
5755 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5757 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5758 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5759 return IPR_RC_JOB_RETURN;
5763 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5764 * @ipr_cmd: ipr command struct
5766 * This function handles the failure of a Mode Sense to the IOAFP.
5767 * Some adapters do not handle all mode pages.
5770 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5772 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5774 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5776 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5777 ipr_cmd->job_step = ipr_setup_write_cache;
5778 return IPR_RC_JOB_CONTINUE;
5781 return ipr_reset_cmd_failed(ipr_cmd);
5785 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5786 * @ipr_cmd: ipr command struct
5788 * This function send a Page 28 mode sense to the IOA to
5789 * retrieve SCSI bus attributes.
5794 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5796 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5799 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5800 0x28, ioa_cfg->vpd_cbs_dma +
5801 offsetof(struct ipr_misc_cbs, mode_pages),
5802 sizeof(struct ipr_mode_pages));
5804 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
5805 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
5807 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5810 return IPR_RC_JOB_RETURN;
5814 * ipr_init_res_table - Initialize the resource table
5815 * @ipr_cmd: ipr command struct
5817 * This function looks through the existing resource table, comparing
5818 * it with the config table. This function will take care of old/new
5819 * devices and schedule adding/removing them from the mid-layer
5823 * IPR_RC_JOB_CONTINUE
5825 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5827 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5828 struct ipr_resource_entry *res, *temp;
5829 struct ipr_config_table_entry *cfgte;
5834 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5835 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5837 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5838 list_move_tail(&res->queue, &old_res);
5840 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5841 cfgte = &ioa_cfg->cfg_table->dev[i];
5844 list_for_each_entry_safe(res, temp, &old_res, queue) {
5845 if (!memcmp(&res->cfgte.res_addr,
5846 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5847 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5854 if (list_empty(&ioa_cfg->free_res_q)) {
5855 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5860 res = list_entry(ioa_cfg->free_res_q.next,
5861 struct ipr_resource_entry, queue);
5862 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5863 ipr_init_res_entry(res);
5868 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5871 list_for_each_entry_safe(res, temp, &old_res, queue) {
5873 res->del_from_ml = 1;
5874 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
5875 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5877 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5881 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5884 return IPR_RC_JOB_CONTINUE;
5888 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5889 * @ipr_cmd: ipr command struct
5891 * This function sends a Query IOA Configuration command
5892 * to the adapter to retrieve the IOA configuration table.
5897 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
5899 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5900 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5901 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5902 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
5905 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
5906 ucode_vpd->major_release, ucode_vpd->card_type,
5907 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
5908 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5909 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5911 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
5912 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
5913 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
5915 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5916 ioarcb->read_data_transfer_length =
5917 cpu_to_be32(sizeof(struct ipr_config_table));
5919 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
5920 ioadl->flags_and_data_len =
5921 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
5923 ipr_cmd->job_step = ipr_init_res_table;
5925 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5928 return IPR_RC_JOB_RETURN;
5932 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
5933 * @ipr_cmd: ipr command struct
5935 * This utility function sends an inquiry to the adapter.
5940 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
5941 u32 dma_addr, u8 xfer_len)
5943 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5944 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5947 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5948 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5950 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
5951 ioarcb->cmd_pkt.cdb[1] = flags;
5952 ioarcb->cmd_pkt.cdb[2] = page;
5953 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5955 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5956 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5958 ioadl->address = cpu_to_be32(dma_addr);
5959 ioadl->flags_and_data_len =
5960 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5962 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5967 * ipr_inquiry_page_supported - Is the given inquiry page supported
5968 * @page0: inquiry page 0 buffer
5971 * This function determines if the specified inquiry page is supported.
5974 * 1 if page is supported / 0 if not
5976 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
5980 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
5981 if (page0->page[i] == page)
5988 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
5989 * @ipr_cmd: ipr command struct
5991 * This function sends a Page 3 inquiry to the adapter
5992 * to retrieve software VPD information.
5995 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5997 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
5999 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6000 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6004 if (!ipr_inquiry_page_supported(page0, 1))
6005 ioa_cfg->cache_state = CACHE_NONE;
6007 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6009 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6010 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6011 sizeof(struct ipr_inquiry_page3));
6014 return IPR_RC_JOB_RETURN;
6018 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6019 * @ipr_cmd: ipr command struct
6021 * This function sends a Page 0 inquiry to the adapter
6022 * to retrieve supported inquiry pages.
6025 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6027 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
6029 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6034 /* Grab the type out of the VPD and store it away */
6035 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6037 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6039 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
6041 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6042 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6043 sizeof(struct ipr_inquiry_page0));
6046 return IPR_RC_JOB_RETURN;
6050 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6051 * @ipr_cmd: ipr command struct
6053 * This function sends a standard inquiry to the adapter.
6058 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6060 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6063 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
6065 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6066 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6067 sizeof(struct ipr_ioa_vpd));
6070 return IPR_RC_JOB_RETURN;
6074 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6075 * @ipr_cmd: ipr command struct
6077 * This function send an Identify Host Request Response Queue
6078 * command to establish the HRRQ with the adapter.
6083 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6085 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6086 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6089 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6091 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6092 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6094 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6095 ioarcb->cmd_pkt.cdb[2] =
6096 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6097 ioarcb->cmd_pkt.cdb[3] =
6098 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6099 ioarcb->cmd_pkt.cdb[4] =
6100 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6101 ioarcb->cmd_pkt.cdb[5] =
6102 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6103 ioarcb->cmd_pkt.cdb[7] =
6104 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6105 ioarcb->cmd_pkt.cdb[8] =
6106 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6108 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6110 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6113 return IPR_RC_JOB_RETURN;
6117 * ipr_reset_timer_done - Adapter reset timer function
6118 * @ipr_cmd: ipr command struct
6120 * Description: This function is used in adapter reset processing
6121 * for timing events. If the reset_cmd pointer in the IOA
6122 * config struct is not this adapter's we are doing nested
6123 * resets and fail_all_ops will take care of freeing the
6129 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6131 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6132 unsigned long lock_flags = 0;
6134 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6136 if (ioa_cfg->reset_cmd == ipr_cmd) {
6137 list_del(&ipr_cmd->queue);
6138 ipr_cmd->done(ipr_cmd);
6141 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6145 * ipr_reset_start_timer - Start a timer for adapter reset job
6146 * @ipr_cmd: ipr command struct
6147 * @timeout: timeout value
6149 * Description: This function is used in adapter reset processing
6150 * for timing events. If the reset_cmd pointer in the IOA
6151 * config struct is not this adapter's we are doing nested
6152 * resets and fail_all_ops will take care of freeing the
6158 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6159 unsigned long timeout)
6161 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6162 ipr_cmd->done = ipr_reset_ioa_job;
6164 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6165 ipr_cmd->timer.expires = jiffies + timeout;
6166 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6167 add_timer(&ipr_cmd->timer);
6171 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6172 * @ioa_cfg: ioa cfg struct
6177 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6179 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6181 /* Initialize Host RRQ pointers */
6182 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6183 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6184 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6185 ioa_cfg->toggle_bit = 1;
6187 /* Zero out config table */
6188 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6192 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6193 * @ipr_cmd: ipr command struct
6195 * This function reinitializes some control blocks and
6196 * enables destructive diagnostics on the adapter.
6201 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6203 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6204 volatile u32 int_reg;
6207 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6208 ipr_init_ioa_mem(ioa_cfg);
6210 ioa_cfg->allow_interrupts = 1;
6211 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6213 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6214 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6215 ioa_cfg->regs.clr_interrupt_mask_reg);
6216 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6217 return IPR_RC_JOB_CONTINUE;
6220 /* Enable destructive diagnostics on IOA */
6221 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
6223 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6224 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6226 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6228 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6229 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
6230 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6231 ipr_cmd->done = ipr_reset_ioa_job;
6232 add_timer(&ipr_cmd->timer);
6233 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6236 return IPR_RC_JOB_RETURN;
6240 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6241 * @ipr_cmd: ipr command struct
6243 * This function is invoked when an adapter dump has run out
6244 * of processing time.
6247 * IPR_RC_JOB_CONTINUE
6249 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6251 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6253 if (ioa_cfg->sdt_state == GET_DUMP)
6254 ioa_cfg->sdt_state = ABORT_DUMP;
6256 ipr_cmd->job_step = ipr_reset_alert;
6258 return IPR_RC_JOB_CONTINUE;
6262 * ipr_unit_check_no_data - Log a unit check/no data error log
6263 * @ioa_cfg: ioa config struct
6265 * Logs an error indicating the adapter unit checked, but for some
6266 * reason, we were unable to fetch the unit check buffer.
6271 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6273 ioa_cfg->errors_logged++;
6274 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6278 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6279 * @ioa_cfg: ioa config struct
6281 * Fetches the unit check buffer from the adapter by clocking the data
6282 * through the mailbox register.
6287 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6289 unsigned long mailbox;
6290 struct ipr_hostrcb *hostrcb;
6291 struct ipr_uc_sdt sdt;
6294 mailbox = readl(ioa_cfg->ioa_mailbox);
6296 if (!ipr_sdt_is_fmt2(mailbox)) {
6297 ipr_unit_check_no_data(ioa_cfg);
6301 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6302 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6303 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6305 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6306 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6307 ipr_unit_check_no_data(ioa_cfg);
6311 /* Find length of the first sdt entry (UC buffer) */
6312 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6313 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6315 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6316 struct ipr_hostrcb, queue);
6317 list_del(&hostrcb->queue);
6318 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6320 rc = ipr_get_ldump_data_section(ioa_cfg,
6321 be32_to_cpu(sdt.entry[0].bar_str_offset),
6322 (__be32 *)&hostrcb->hcam,
6323 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6326 ipr_handle_log_data(ioa_cfg, hostrcb);
6328 ipr_unit_check_no_data(ioa_cfg);
6330 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6334 * ipr_reset_restore_cfg_space - Restore PCI config space.
6335 * @ipr_cmd: ipr command struct
6337 * Description: This function restores the saved PCI config space of
6338 * the adapter, fails all outstanding ops back to the callers, and
6339 * fetches the dump/unit check if applicable to this reset.
6342 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6344 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6346 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6350 rc = pci_restore_state(ioa_cfg->pdev);
6352 if (rc != PCIBIOS_SUCCESSFUL) {
6353 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6354 return IPR_RC_JOB_CONTINUE;
6357 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6358 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6359 return IPR_RC_JOB_CONTINUE;
6362 ipr_fail_all_ops(ioa_cfg);
6364 if (ioa_cfg->ioa_unit_checked) {
6365 ioa_cfg->ioa_unit_checked = 0;
6366 ipr_get_unit_check_buffer(ioa_cfg);
6367 ipr_cmd->job_step = ipr_reset_alert;
6368 ipr_reset_start_timer(ipr_cmd, 0);
6369 return IPR_RC_JOB_RETURN;
6372 if (ioa_cfg->in_ioa_bringdown) {
6373 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6375 ipr_cmd->job_step = ipr_reset_enable_ioa;
6377 if (GET_DUMP == ioa_cfg->sdt_state) {
6378 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6379 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6380 schedule_work(&ioa_cfg->work_q);
6381 return IPR_RC_JOB_RETURN;
6386 return IPR_RC_JOB_CONTINUE;
6390 * ipr_reset_bist_done - BIST has completed on the adapter.
6391 * @ipr_cmd: ipr command struct
6393 * Description: Unblock config space and resume the reset process.
6396 * IPR_RC_JOB_CONTINUE
6398 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6401 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6402 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6404 return IPR_RC_JOB_CONTINUE;
6408 * ipr_reset_start_bist - Run BIST on the adapter.
6409 * @ipr_cmd: ipr command struct
6411 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6414 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6416 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6418 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6422 pci_block_user_cfg_access(ioa_cfg->pdev);
6423 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6425 if (rc != PCIBIOS_SUCCESSFUL) {
6426 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6427 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6428 rc = IPR_RC_JOB_CONTINUE;
6430 ipr_cmd->job_step = ipr_reset_bist_done;
6431 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6432 rc = IPR_RC_JOB_RETURN;
6440 * ipr_reset_allowed - Query whether or not IOA can be reset
6441 * @ioa_cfg: ioa config struct
6444 * 0 if reset not allowed / non-zero if reset is allowed
6446 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6448 volatile u32 temp_reg;
6450 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6451 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6455 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6456 * @ipr_cmd: ipr command struct
6458 * Description: This function waits for adapter permission to run BIST,
6459 * then runs BIST. If the adapter does not give permission after a
6460 * reasonable time, we will reset the adapter anyway. The impact of
6461 * resetting the adapter without warning the adapter is the risk of
6462 * losing the persistent error log on the adapter. If the adapter is
6463 * reset while it is writing to the flash on the adapter, the flash
6464 * segment will have bad ECC and be zeroed.
6467 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6469 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6471 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6472 int rc = IPR_RC_JOB_RETURN;
6474 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6475 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6476 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6478 ipr_cmd->job_step = ipr_reset_start_bist;
6479 rc = IPR_RC_JOB_CONTINUE;
6486 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6487 * @ipr_cmd: ipr command struct
6489 * Description: This function alerts the adapter that it will be reset.
6490 * If memory space is not currently enabled, proceed directly
6491 * to running BIST on the adapter. The timer must always be started
6492 * so we guarantee we do not run BIST from ipr_isr.
6497 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6499 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6504 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6506 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6507 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6508 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6509 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6511 ipr_cmd->job_step = ipr_reset_start_bist;
6514 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6515 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6518 return IPR_RC_JOB_RETURN;
6522 * ipr_reset_ucode_download_done - Microcode download completion
6523 * @ipr_cmd: ipr command struct
6525 * Description: This function unmaps the microcode download buffer.
6528 * IPR_RC_JOB_CONTINUE
6530 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6532 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6533 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6535 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6536 sglist->num_sg, DMA_TO_DEVICE);
6538 ipr_cmd->job_step = ipr_reset_alert;
6539 return IPR_RC_JOB_CONTINUE;
6543 * ipr_reset_ucode_download - Download microcode to the adapter
6544 * @ipr_cmd: ipr command struct
6546 * Description: This function checks to see if it there is microcode
6547 * to download to the adapter. If there is, a download is performed.
6550 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6552 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6554 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6555 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6558 ipr_cmd->job_step = ipr_reset_alert;
6561 return IPR_RC_JOB_CONTINUE;
6563 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6564 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6565 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6566 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6567 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6568 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6569 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6571 ipr_build_ucode_ioadl(ipr_cmd, sglist);
6572 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6574 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6575 IPR_WRITE_BUFFER_TIMEOUT);
6578 return IPR_RC_JOB_RETURN;
6582 * ipr_reset_shutdown_ioa - Shutdown the adapter
6583 * @ipr_cmd: ipr command struct
6585 * Description: This function issues an adapter shutdown of the
6586 * specified type to the specified adapter as part of the
6587 * adapter reset job.
6590 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6592 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6594 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6595 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6596 unsigned long timeout;
6597 int rc = IPR_RC_JOB_CONTINUE;
6600 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6601 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6602 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6603 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6604 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6606 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
6607 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
6608 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6609 timeout = IPR_INTERNAL_TIMEOUT;
6611 timeout = IPR_SHUTDOWN_TIMEOUT;
6613 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6615 rc = IPR_RC_JOB_RETURN;
6616 ipr_cmd->job_step = ipr_reset_ucode_download;
6618 ipr_cmd->job_step = ipr_reset_alert;
6625 * ipr_reset_ioa_job - Adapter reset job
6626 * @ipr_cmd: ipr command struct
6628 * Description: This function is the job router for the adapter reset job.
6633 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6636 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6639 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6641 if (ioa_cfg->reset_cmd != ipr_cmd) {
6643 * We are doing nested adapter resets and this is
6644 * not the current reset job.
6646 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6650 if (IPR_IOASC_SENSE_KEY(ioasc)) {
6651 rc = ipr_cmd->job_step_failed(ipr_cmd);
6652 if (rc == IPR_RC_JOB_RETURN)
6656 ipr_reinit_ipr_cmnd(ipr_cmd);
6657 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
6658 rc = ipr_cmd->job_step(ipr_cmd);
6659 } while(rc == IPR_RC_JOB_CONTINUE);
6663 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6664 * @ioa_cfg: ioa config struct
6665 * @job_step: first job step of reset job
6666 * @shutdown_type: shutdown type
6668 * Description: This function will initiate the reset of the given adapter
6669 * starting at the selected job step.
6670 * If the caller needs to wait on the completion of the reset,
6671 * the caller must sleep on the reset_wait_q.
6676 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6677 int (*job_step) (struct ipr_cmnd *),
6678 enum ipr_shutdown_type shutdown_type)
6680 struct ipr_cmnd *ipr_cmd;
6682 ioa_cfg->in_reset_reload = 1;
6683 ioa_cfg->allow_cmds = 0;
6684 scsi_block_requests(ioa_cfg->host);
6686 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6687 ioa_cfg->reset_cmd = ipr_cmd;
6688 ipr_cmd->job_step = job_step;
6689 ipr_cmd->u.shutdown_type = shutdown_type;
6691 ipr_reset_ioa_job(ipr_cmd);
6695 * ipr_initiate_ioa_reset - Initiate an adapter reset
6696 * @ioa_cfg: ioa config struct
6697 * @shutdown_type: shutdown type
6699 * Description: This function will initiate the reset of the given adapter.
6700 * If the caller needs to wait on the completion of the reset,
6701 * the caller must sleep on the reset_wait_q.
6706 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6707 enum ipr_shutdown_type shutdown_type)
6709 if (ioa_cfg->ioa_is_dead)
6712 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6713 ioa_cfg->sdt_state = ABORT_DUMP;
6715 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6716 dev_err(&ioa_cfg->pdev->dev,
6717 "IOA taken offline - error recovery failed\n");
6719 ioa_cfg->reset_retries = 0;
6720 ioa_cfg->ioa_is_dead = 1;
6722 if (ioa_cfg->in_ioa_bringdown) {
6723 ioa_cfg->reset_cmd = NULL;
6724 ioa_cfg->in_reset_reload = 0;
6725 ipr_fail_all_ops(ioa_cfg);
6726 wake_up_all(&ioa_cfg->reset_wait_q);
6728 spin_unlock_irq(ioa_cfg->host->host_lock);
6729 scsi_unblock_requests(ioa_cfg->host);
6730 spin_lock_irq(ioa_cfg->host->host_lock);
6733 ioa_cfg->in_ioa_bringdown = 1;
6734 shutdown_type = IPR_SHUTDOWN_NONE;
6738 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6743 * ipr_reset_freeze - Hold off all I/O activity
6744 * @ipr_cmd: ipr command struct
6746 * Description: If the PCI slot is frozen, hold off all I/O
6747 * activity; then, as soon as the slot is available again,
6748 * initiate an adapter reset.
6750 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6752 /* Disallow new interrupts, avoid loop */
6753 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6754 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6755 ipr_cmd->done = ipr_reset_ioa_job;
6756 return IPR_RC_JOB_RETURN;
6760 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6761 * @pdev: PCI device struct
6763 * Description: This routine is called to tell us that the PCI bus
6764 * is down. Can't do anything here, except put the device driver
6765 * into a holding pattern, waiting for the PCI bus to come back.
6767 static void ipr_pci_frozen(struct pci_dev *pdev)
6769 unsigned long flags = 0;
6770 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6772 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6773 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6774 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6778 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6779 * @pdev: PCI device struct
6781 * Description: This routine is called by the pci error recovery
6782 * code after the PCI slot has been reset, just before we
6783 * should resume normal operations.
6785 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6787 unsigned long flags = 0;
6788 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6790 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6791 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6793 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6794 return PCI_ERS_RESULT_RECOVERED;
6798 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6799 * @pdev: PCI device struct
6801 * Description: This routine is called when the PCI bus has
6802 * permanently failed.
6804 static void ipr_pci_perm_failure(struct pci_dev *pdev)
6806 unsigned long flags = 0;
6807 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6809 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6810 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
6811 ioa_cfg->sdt_state = ABORT_DUMP;
6812 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
6813 ioa_cfg->in_ioa_bringdown = 1;
6814 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6815 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6819 * ipr_pci_error_detected - Called when a PCI error is detected.
6820 * @pdev: PCI device struct
6821 * @state: PCI channel state
6823 * Description: Called when a PCI error is detected.
6826 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
6828 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
6829 pci_channel_state_t state)
6832 case pci_channel_io_frozen:
6833 ipr_pci_frozen(pdev);
6834 return PCI_ERS_RESULT_NEED_RESET;
6835 case pci_channel_io_perm_failure:
6836 ipr_pci_perm_failure(pdev);
6837 return PCI_ERS_RESULT_DISCONNECT;
6842 return PCI_ERS_RESULT_NEED_RESET;
6846 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
6847 * @ioa_cfg: ioa cfg struct
6849 * Description: This is the second phase of adapter intialization
6850 * This function takes care of initilizing the adapter to the point
6851 * where it can accept new commands.
6854 * 0 on sucess / -EIO on failure
6856 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
6859 unsigned long host_lock_flags = 0;
6862 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6863 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
6864 if (ioa_cfg->needs_hard_reset) {
6865 ioa_cfg->needs_hard_reset = 0;
6866 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6868 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
6871 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6872 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6873 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6875 if (ioa_cfg->ioa_is_dead) {
6877 } else if (ipr_invalid_adapter(ioa_cfg)) {
6881 dev_err(&ioa_cfg->pdev->dev,
6882 "Adapter not supported in this hardware configuration.\n");
6885 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6892 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
6893 * @ioa_cfg: ioa config struct
6898 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6902 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6903 if (ioa_cfg->ipr_cmnd_list[i])
6904 pci_pool_free(ioa_cfg->ipr_cmd_pool,
6905 ioa_cfg->ipr_cmnd_list[i],
6906 ioa_cfg->ipr_cmnd_list_dma[i]);
6908 ioa_cfg->ipr_cmnd_list[i] = NULL;
6911 if (ioa_cfg->ipr_cmd_pool)
6912 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
6914 ioa_cfg->ipr_cmd_pool = NULL;
6918 * ipr_free_mem - Frees memory allocated for an adapter
6919 * @ioa_cfg: ioa cfg struct
6924 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
6928 kfree(ioa_cfg->res_entries);
6929 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
6930 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
6931 ipr_free_cmd_blks(ioa_cfg);
6932 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
6933 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
6934 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
6936 ioa_cfg->cfg_table_dma);
6938 for (i = 0; i < IPR_NUM_HCAMS; i++) {
6939 pci_free_consistent(ioa_cfg->pdev,
6940 sizeof(struct ipr_hostrcb),
6941 ioa_cfg->hostrcb[i],
6942 ioa_cfg->hostrcb_dma[i]);
6945 ipr_free_dump(ioa_cfg);
6946 kfree(ioa_cfg->trace);
6950 * ipr_free_all_resources - Free all allocated resources for an adapter.
6951 * @ipr_cmd: ipr command struct
6953 * This function frees all allocated resources for the
6954 * specified adapter.
6959 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
6961 struct pci_dev *pdev = ioa_cfg->pdev;
6964 free_irq(pdev->irq, ioa_cfg);
6965 iounmap(ioa_cfg->hdw_dma_regs);
6966 pci_release_regions(pdev);
6967 ipr_free_mem(ioa_cfg);
6968 scsi_host_put(ioa_cfg->host);
6969 pci_disable_device(pdev);
6974 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
6975 * @ioa_cfg: ioa config struct
6978 * 0 on success / -ENOMEM on allocation failure
6980 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6982 struct ipr_cmnd *ipr_cmd;
6983 struct ipr_ioarcb *ioarcb;
6984 dma_addr_t dma_addr;
6987 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
6988 sizeof(struct ipr_cmnd), 8, 0);
6990 if (!ioa_cfg->ipr_cmd_pool)
6993 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6994 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
6997 ipr_free_cmd_blks(ioa_cfg);
7001 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7002 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7003 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7005 ioarcb = &ipr_cmd->ioarcb;
7006 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7007 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7008 ioarcb->write_ioadl_addr =
7009 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7010 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7011 ioarcb->ioasa_host_pci_addr =
7012 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7013 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7014 ipr_cmd->cmd_index = i;
7015 ipr_cmd->ioa_cfg = ioa_cfg;
7016 ipr_cmd->sense_buffer_dma = dma_addr +
7017 offsetof(struct ipr_cmnd, sense_buffer);
7019 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7026 * ipr_alloc_mem - Allocate memory for an adapter
7027 * @ioa_cfg: ioa config struct
7030 * 0 on success / non-zero for error
7032 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7034 struct pci_dev *pdev = ioa_cfg->pdev;
7035 int i, rc = -ENOMEM;
7038 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
7039 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7041 if (!ioa_cfg->res_entries)
7044 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7045 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7047 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7048 sizeof(struct ipr_misc_cbs),
7049 &ioa_cfg->vpd_cbs_dma);
7051 if (!ioa_cfg->vpd_cbs)
7052 goto out_free_res_entries;
7054 if (ipr_alloc_cmd_blks(ioa_cfg))
7055 goto out_free_vpd_cbs;
7057 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7058 sizeof(u32) * IPR_NUM_CMD_BLKS,
7059 &ioa_cfg->host_rrq_dma);
7061 if (!ioa_cfg->host_rrq)
7062 goto out_ipr_free_cmd_blocks;
7064 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7065 sizeof(struct ipr_config_table),
7066 &ioa_cfg->cfg_table_dma);
7068 if (!ioa_cfg->cfg_table)
7069 goto out_free_host_rrq;
7071 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7072 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7073 sizeof(struct ipr_hostrcb),
7074 &ioa_cfg->hostrcb_dma[i]);
7076 if (!ioa_cfg->hostrcb[i])
7077 goto out_free_hostrcb_dma;
7079 ioa_cfg->hostrcb[i]->hostrcb_dma =
7080 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
7081 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
7082 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7085 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
7086 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7088 if (!ioa_cfg->trace)
7089 goto out_free_hostrcb_dma;
7096 out_free_hostrcb_dma:
7098 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7099 ioa_cfg->hostrcb[i],
7100 ioa_cfg->hostrcb_dma[i]);
7102 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7103 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7105 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7106 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7107 out_ipr_free_cmd_blocks:
7108 ipr_free_cmd_blks(ioa_cfg);
7110 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7111 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7112 out_free_res_entries:
7113 kfree(ioa_cfg->res_entries);
7118 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7119 * @ioa_cfg: ioa config struct
7124 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7128 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7129 ioa_cfg->bus_attr[i].bus = i;
7130 ioa_cfg->bus_attr[i].qas_enabled = 0;
7131 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7132 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7133 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7135 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7140 * ipr_init_ioa_cfg - Initialize IOA config struct
7141 * @ioa_cfg: ioa config struct
7142 * @host: scsi host struct
7143 * @pdev: PCI dev struct
7148 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7149 struct Scsi_Host *host, struct pci_dev *pdev)
7151 const struct ipr_interrupt_offsets *p;
7152 struct ipr_interrupts *t;
7155 ioa_cfg->host = host;
7156 ioa_cfg->pdev = pdev;
7157 ioa_cfg->log_level = ipr_log_level;
7158 ioa_cfg->doorbell = IPR_DOORBELL;
7159 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7160 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7161 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7162 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7163 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7164 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7165 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7166 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7168 INIT_LIST_HEAD(&ioa_cfg->free_q);
7169 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7170 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7171 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7172 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7173 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
7174 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
7175 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7176 ioa_cfg->sdt_state = INACTIVE;
7177 if (ipr_enable_cache)
7178 ioa_cfg->cache_state = CACHE_ENABLED;
7180 ioa_cfg->cache_state = CACHE_DISABLED;
7182 ipr_initialize_bus_attr(ioa_cfg);
7184 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7185 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7186 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7187 host->unique_id = host->host_no;
7188 host->max_cmd_len = IPR_MAX_CDB_LEN;
7189 pci_set_drvdata(pdev, ioa_cfg);
7191 p = &ioa_cfg->chip_cfg->regs;
7193 base = ioa_cfg->hdw_dma_regs;
7195 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7196 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7197 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7198 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7199 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7200 t->ioarrin_reg = base + p->ioarrin_reg;
7201 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7202 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7203 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7207 * ipr_get_chip_cfg - Find adapter chip configuration
7208 * @dev_id: PCI device id struct
7211 * ptr to chip config on success / NULL on failure
7213 static const struct ipr_chip_cfg_t * __devinit
7214 ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7218 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7219 if (ipr_chip[i].vendor == dev_id->vendor &&
7220 ipr_chip[i].device == dev_id->device)
7221 return ipr_chip[i].cfg;
7226 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7227 * @pdev: PCI device struct
7228 * @dev_id: PCI device id struct
7231 * 0 on success / non-zero on failure
7233 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7234 const struct pci_device_id *dev_id)
7236 struct ipr_ioa_cfg *ioa_cfg;
7237 struct Scsi_Host *host;
7238 unsigned long ipr_regs_pci;
7239 void __iomem *ipr_regs;
7240 int rc = PCIBIOS_SUCCESSFUL;
7241 volatile u32 mask, uproc;
7245 if ((rc = pci_enable_device(pdev))) {
7246 dev_err(&pdev->dev, "Cannot enable adapter\n");
7250 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7252 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7255 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7260 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7261 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
7262 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7263 sata_port_info.flags, &ipr_sata_ops);
7265 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7267 if (!ioa_cfg->chip_cfg) {
7268 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7269 dev_id->vendor, dev_id->device);
7270 goto out_scsi_host_put;
7273 if (ipr_transop_timeout)
7274 ioa_cfg->transop_timeout = ipr_transop_timeout;
7275 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7276 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7278 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7280 ipr_regs_pci = pci_resource_start(pdev, 0);
7282 rc = pci_request_regions(pdev, IPR_NAME);
7285 "Couldn't register memory range of registers\n");
7286 goto out_scsi_host_put;
7289 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7293 "Couldn't map memory range of registers\n");
7295 goto out_release_regions;
7298 ioa_cfg->hdw_dma_regs = ipr_regs;
7299 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7300 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7302 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7304 pci_set_master(pdev);
7306 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7308 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7312 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7313 ioa_cfg->chip_cfg->cache_line_size);
7315 if (rc != PCIBIOS_SUCCESSFUL) {
7316 dev_err(&pdev->dev, "Write of cache line size failed\n");
7321 /* Save away PCI config space for use following IOA reset */
7322 rc = pci_save_state(pdev);
7324 if (rc != PCIBIOS_SUCCESSFUL) {
7325 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7330 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7333 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7336 rc = ipr_alloc_mem(ioa_cfg);
7339 "Couldn't allocate enough memory for device driver!\n");
7344 * If HRRQ updated interrupt is not masked, or reset alert is set,
7345 * the card is in an unknown state and needs a hard reset
7347 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7348 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7349 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7350 ioa_cfg->needs_hard_reset = 1;
7352 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7353 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
7356 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7361 spin_lock(&ipr_driver_lock);
7362 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7363 spin_unlock(&ipr_driver_lock);
7370 ipr_free_mem(ioa_cfg);
7373 out_release_regions:
7374 pci_release_regions(pdev);
7376 scsi_host_put(host);
7378 pci_disable_device(pdev);
7383 * ipr_scan_vsets - Scans for VSET devices
7384 * @ioa_cfg: ioa config struct
7386 * Description: Since the VSET resources do not follow SAM in that we can have
7387 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7392 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7396 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7397 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7398 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7402 * ipr_initiate_ioa_bringdown - Bring down an adapter
7403 * @ioa_cfg: ioa config struct
7404 * @shutdown_type: shutdown type
7406 * Description: This function will initiate bringing down the adapter.
7407 * This consists of issuing an IOA shutdown to the adapter
7408 * to flush the cache, and running BIST.
7409 * If the caller needs to wait on the completion of the reset,
7410 * the caller must sleep on the reset_wait_q.
7415 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7416 enum ipr_shutdown_type shutdown_type)
7419 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7420 ioa_cfg->sdt_state = ABORT_DUMP;
7421 ioa_cfg->reset_retries = 0;
7422 ioa_cfg->in_ioa_bringdown = 1;
7423 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7428 * __ipr_remove - Remove a single adapter
7429 * @pdev: pci device struct
7431 * Adapter hot plug remove entry point.
7436 static void __ipr_remove(struct pci_dev *pdev)
7438 unsigned long host_lock_flags = 0;
7439 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7442 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7443 while(ioa_cfg->in_reset_reload) {
7444 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7445 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7446 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7449 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7451 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7452 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7453 flush_scheduled_work();
7454 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7456 spin_lock(&ipr_driver_lock);
7457 list_del(&ioa_cfg->queue);
7458 spin_unlock(&ipr_driver_lock);
7460 if (ioa_cfg->sdt_state == ABORT_DUMP)
7461 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7462 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7464 ipr_free_all_resources(ioa_cfg);
7470 * ipr_remove - IOA hot plug remove entry point
7471 * @pdev: pci device struct
7473 * Adapter hot plug remove entry point.
7478 static void ipr_remove(struct pci_dev *pdev)
7480 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7484 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7486 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7488 scsi_remove_host(ioa_cfg->host);
7496 * ipr_probe - Adapter hot plug add entry point
7499 * 0 on success / non-zero on failure
7501 static int __devinit ipr_probe(struct pci_dev *pdev,
7502 const struct pci_device_id *dev_id)
7504 struct ipr_ioa_cfg *ioa_cfg;
7507 rc = ipr_probe_ioa(pdev, dev_id);
7512 ioa_cfg = pci_get_drvdata(pdev);
7513 rc = ipr_probe_ioa_part2(ioa_cfg);
7520 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7527 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7531 scsi_remove_host(ioa_cfg->host);
7536 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7540 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7542 scsi_remove_host(ioa_cfg->host);
7547 scsi_scan_host(ioa_cfg->host);
7548 ipr_scan_vsets(ioa_cfg);
7549 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7550 ioa_cfg->allow_ml_add_del = 1;
7551 ioa_cfg->host->max_channel = IPR_VSET_BUS;
7552 schedule_work(&ioa_cfg->work_q);
7557 * ipr_shutdown - Shutdown handler.
7558 * @pdev: pci device struct
7560 * This function is invoked upon system shutdown/reboot. It will issue
7561 * an adapter shutdown to the adapter to flush the write cache.
7566 static void ipr_shutdown(struct pci_dev *pdev)
7568 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7569 unsigned long lock_flags = 0;
7571 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7572 while(ioa_cfg->in_reset_reload) {
7573 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7574 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7575 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7578 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7579 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7580 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7583 static struct pci_device_id ipr_pci_table[] __devinitdata = {
7584 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7585 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
7586 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7587 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
7588 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7589 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
7590 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7591 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
7592 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7593 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
7594 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7595 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
7596 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7597 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
7598 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7599 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7600 IPR_USE_LONG_TRANSOP_TIMEOUT },
7601 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7602 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7603 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7604 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 },
7605 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7606 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7607 IPR_USE_LONG_TRANSOP_TIMEOUT },
7608 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7609 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7610 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7611 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 },
7612 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7613 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7614 IPR_USE_LONG_TRANSOP_TIMEOUT },
7615 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7616 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 0 },
7617 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7618 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7619 IPR_USE_LONG_TRANSOP_TIMEOUT },
7620 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7621 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
7622 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7623 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
7624 IPR_USE_LONG_TRANSOP_TIMEOUT },
7625 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7626 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
7627 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7628 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
7629 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7630 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7631 IPR_USE_LONG_TRANSOP_TIMEOUT },
7632 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7633 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7634 IPR_USE_LONG_TRANSOP_TIMEOUT },
7635 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7636 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7637 IPR_USE_LONG_TRANSOP_TIMEOUT },
7640 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7642 static struct pci_error_handlers ipr_err_handler = {
7643 .error_detected = ipr_pci_error_detected,
7644 .slot_reset = ipr_pci_slot_reset,
7647 static struct pci_driver ipr_driver = {
7649 .id_table = ipr_pci_table,
7651 .remove = ipr_remove,
7652 .shutdown = ipr_shutdown,
7653 .err_handler = &ipr_err_handler,
7654 .dynids.use_driver_data = 1
7658 * ipr_init - Module entry point
7661 * 0 on success / negative value on failure
7663 static int __init ipr_init(void)
7665 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7666 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7668 return pci_register_driver(&ipr_driver);
7672 * ipr_exit - Module unload
7674 * Module unload entry point.
7679 static void __exit ipr_exit(void)
7681 pci_unregister_driver(&ipr_driver);
7684 module_init(ipr_init);
7685 module_exit(ipr_exit);