2 * Disk Array driver for HP Smart Array SAS controllers
3 * Copyright 2014-2015 PMC-Sierra, Inc.
4 * Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13 * NON INFRINGEMENT. See the GNU General Public License for more details.
15 * Questions/Comments/Bugfixes to storagedev@pmcs.com
19 #include <linux/module.h>
20 #include <linux/interrupt.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/pci-aspm.h>
24 #include <linux/kernel.h>
25 #include <linux/slab.h>
26 #include <linux/delay.h>
28 #include <linux/timer.h>
29 #include <linux/init.h>
30 #include <linux/spinlock.h>
31 #include <linux/compat.h>
32 #include <linux/blktrace_api.h>
33 #include <linux/uaccess.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/completion.h>
37 #include <linux/moduleparam.h>
38 #include <scsi/scsi.h>
39 #include <scsi/scsi_cmnd.h>
40 #include <scsi/scsi_device.h>
41 #include <scsi/scsi_host.h>
42 #include <scsi/scsi_tcq.h>
43 #include <scsi/scsi_eh.h>
44 #include <scsi/scsi_dbg.h>
45 #include <linux/cciss_ioctl.h>
46 #include <linux/string.h>
47 #include <linux/bitmap.h>
48 #include <linux/atomic.h>
49 #include <linux/jiffies.h>
50 #include <linux/percpu-defs.h>
51 #include <linux/percpu.h>
52 #include <asm/unaligned.h>
53 #include <asm/div64.h>
57 /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */
58 #define HPSA_DRIVER_VERSION "3.4.10-0"
59 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
62 /* How long to wait for CISS doorbell communication */
63 #define CLEAR_EVENT_WAIT_INTERVAL 20 /* ms for each msleep() call */
64 #define MODE_CHANGE_WAIT_INTERVAL 10 /* ms for each msleep() call */
65 #define MAX_CLEAR_EVENT_WAIT 30000 /* times 20 ms = 600 s */
66 #define MAX_MODE_CHANGE_WAIT 2000 /* times 10 ms = 20 s */
67 #define MAX_IOCTL_CONFIG_WAIT 1000
69 /*define how many times we will try a command because of bus resets */
70 #define MAX_CMD_RETRIES 3
72 /* Embedded module documentation macros - see modules.h */
73 MODULE_AUTHOR("Hewlett-Packard Company");
74 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
76 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
77 MODULE_VERSION(HPSA_DRIVER_VERSION);
78 MODULE_LICENSE("GPL");
80 static int hpsa_allow_any;
81 module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR);
82 MODULE_PARM_DESC(hpsa_allow_any,
83 "Allow hpsa driver to access unknown HP Smart Array hardware");
84 static int hpsa_simple_mode;
85 module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR);
86 MODULE_PARM_DESC(hpsa_simple_mode,
87 "Use 'simple mode' rather than 'performant mode'");
89 /* define the PCI info for the cards we can control */
90 static const struct pci_device_id hpsa_pci_device_id[] = {
91 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
92 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
93 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
94 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
95 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A},
97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B},
98 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233},
99 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350},
100 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351},
101 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352},
102 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353},
103 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354},
104 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355},
105 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356},
106 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1921},
107 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1922},
108 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1923},
109 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1924},
110 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1926},
111 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1928},
112 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1929},
113 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BD},
114 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BE},
115 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BF},
116 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C0},
117 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C1},
118 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C2},
119 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C3},
120 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C4},
121 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C5},
122 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C6},
123 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C7},
124 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C8},
125 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C9},
126 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CA},
127 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CB},
128 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CC},
129 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CD},
130 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CE},
131 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0580},
132 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0581},
133 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0582},
134 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0583},
135 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0584},
136 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0585},
137 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0076},
138 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0087},
139 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D},
140 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0088},
141 {PCI_VENDOR_ID_HP, 0x333f, 0x103c, 0x333f},
142 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
143 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
147 MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);
149 /* board_id = Subsystem Device ID & Vendor ID
150 * product = Marketing Name for the board
151 * access = Address of the struct of function pointers
153 static struct board_type products[] = {
154 {0x3241103C, "Smart Array P212", &SA5_access},
155 {0x3243103C, "Smart Array P410", &SA5_access},
156 {0x3245103C, "Smart Array P410i", &SA5_access},
157 {0x3247103C, "Smart Array P411", &SA5_access},
158 {0x3249103C, "Smart Array P812", &SA5_access},
159 {0x324A103C, "Smart Array P712m", &SA5_access},
160 {0x324B103C, "Smart Array P711m", &SA5_access},
161 {0x3233103C, "HP StorageWorks 1210m", &SA5_access}, /* alias of 333f */
162 {0x3350103C, "Smart Array P222", &SA5_access},
163 {0x3351103C, "Smart Array P420", &SA5_access},
164 {0x3352103C, "Smart Array P421", &SA5_access},
165 {0x3353103C, "Smart Array P822", &SA5_access},
166 {0x3354103C, "Smart Array P420i", &SA5_access},
167 {0x3355103C, "Smart Array P220i", &SA5_access},
168 {0x3356103C, "Smart Array P721m", &SA5_access},
169 {0x1921103C, "Smart Array P830i", &SA5_access},
170 {0x1922103C, "Smart Array P430", &SA5_access},
171 {0x1923103C, "Smart Array P431", &SA5_access},
172 {0x1924103C, "Smart Array P830", &SA5_access},
173 {0x1926103C, "Smart Array P731m", &SA5_access},
174 {0x1928103C, "Smart Array P230i", &SA5_access},
175 {0x1929103C, "Smart Array P530", &SA5_access},
176 {0x21BD103C, "Smart Array P244br", &SA5_access},
177 {0x21BE103C, "Smart Array P741m", &SA5_access},
178 {0x21BF103C, "Smart HBA H240ar", &SA5_access},
179 {0x21C0103C, "Smart Array P440ar", &SA5_access},
180 {0x21C1103C, "Smart Array P840ar", &SA5_access},
181 {0x21C2103C, "Smart Array P440", &SA5_access},
182 {0x21C3103C, "Smart Array P441", &SA5_access},
183 {0x21C4103C, "Smart Array", &SA5_access},
184 {0x21C5103C, "Smart Array P841", &SA5_access},
185 {0x21C6103C, "Smart HBA H244br", &SA5_access},
186 {0x21C7103C, "Smart HBA H240", &SA5_access},
187 {0x21C8103C, "Smart HBA H241", &SA5_access},
188 {0x21C9103C, "Smart Array", &SA5_access},
189 {0x21CA103C, "Smart Array P246br", &SA5_access},
190 {0x21CB103C, "Smart Array P840", &SA5_access},
191 {0x21CC103C, "Smart Array", &SA5_access},
192 {0x21CD103C, "Smart Array", &SA5_access},
193 {0x21CE103C, "Smart HBA", &SA5_access},
194 {0x05809005, "SmartHBA-SA", &SA5_access},
195 {0x05819005, "SmartHBA-SA 8i", &SA5_access},
196 {0x05829005, "SmartHBA-SA 8i8e", &SA5_access},
197 {0x05839005, "SmartHBA-SA 8e", &SA5_access},
198 {0x05849005, "SmartHBA-SA 16i", &SA5_access},
199 {0x05859005, "SmartHBA-SA 4i4e", &SA5_access},
200 {0x00761590, "HP Storage P1224 Array Controller", &SA5_access},
201 {0x00871590, "HP Storage P1224e Array Controller", &SA5_access},
202 {0x007D1590, "HP Storage P1228 Array Controller", &SA5_access},
203 {0x00881590, "HP Storage P1228e Array Controller", &SA5_access},
204 {0x333f103c, "HP StorageWorks 1210m Array Controller", &SA5_access},
205 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
208 #define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy)
209 static const struct scsi_cmnd hpsa_cmd_busy;
210 #define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle)
211 static const struct scsi_cmnd hpsa_cmd_idle;
212 static int number_of_controllers;
214 static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id);
215 static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id);
216 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
219 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd,
223 static void cmd_free(struct ctlr_info *h, struct CommandList *c);
224 static struct CommandList *cmd_alloc(struct ctlr_info *h);
225 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c);
226 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
227 struct scsi_cmnd *scmd);
228 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
229 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
231 static void hpsa_free_cmd_pool(struct ctlr_info *h);
232 #define VPD_PAGE (1 << 8)
233 #define HPSA_SIMPLE_ERROR_BITS 0x03
235 static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
236 static void hpsa_scan_start(struct Scsi_Host *);
237 static int hpsa_scan_finished(struct Scsi_Host *sh,
238 unsigned long elapsed_time);
239 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth);
241 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
242 static int hpsa_eh_abort_handler(struct scsi_cmnd *scsicmd);
243 static int hpsa_slave_alloc(struct scsi_device *sdev);
244 static int hpsa_slave_configure(struct scsi_device *sdev);
245 static void hpsa_slave_destroy(struct scsi_device *sdev);
247 static void hpsa_update_scsi_devices(struct ctlr_info *h);
248 static int check_for_unit_attention(struct ctlr_info *h,
249 struct CommandList *c);
250 static void check_ioctl_unit_attention(struct ctlr_info *h,
251 struct CommandList *c);
252 /* performant mode helper functions */
253 static void calc_bucket_map(int *bucket, int num_buckets,
254 int nsgs, int min_blocks, u32 *bucket_map);
255 static void hpsa_free_performant_mode(struct ctlr_info *h);
256 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
257 static inline u32 next_command(struct ctlr_info *h, u8 q);
258 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
259 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
261 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
262 unsigned long *memory_bar);
263 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id);
264 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
266 static inline void finish_cmd(struct CommandList *c);
267 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h);
268 #define BOARD_NOT_READY 0
269 #define BOARD_READY 1
270 static void hpsa_drain_accel_commands(struct ctlr_info *h);
271 static void hpsa_flush_cache(struct ctlr_info *h);
272 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
273 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
274 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk);
275 static void hpsa_command_resubmit_worker(struct work_struct *work);
276 static u32 lockup_detected(struct ctlr_info *h);
277 static int detect_controller_lockup(struct ctlr_info *h);
278 static int is_ext_target(struct ctlr_info *h, struct hpsa_scsi_dev_t *device);
280 static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
282 unsigned long *priv = shost_priv(sdev->host);
283 return (struct ctlr_info *) *priv;
286 static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
288 unsigned long *priv = shost_priv(sh);
289 return (struct ctlr_info *) *priv;
292 static inline bool hpsa_is_cmd_idle(struct CommandList *c)
294 return c->scsi_cmd == SCSI_CMD_IDLE;
297 static inline bool hpsa_is_pending_event(struct CommandList *c)
299 return c->abort_pending || c->reset_pending;
302 /* extract sense key, asc, and ascq from sense data. -1 means invalid. */
303 static void decode_sense_data(const u8 *sense_data, int sense_data_len,
304 u8 *sense_key, u8 *asc, u8 *ascq)
306 struct scsi_sense_hdr sshdr;
313 if (sense_data_len < 1)
316 rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr);
318 *sense_key = sshdr.sense_key;
324 static int check_for_unit_attention(struct ctlr_info *h,
325 struct CommandList *c)
327 u8 sense_key, asc, ascq;
330 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
331 sense_len = sizeof(c->err_info->SenseInfo);
333 sense_len = c->err_info->SenseLen;
335 decode_sense_data(c->err_info->SenseInfo, sense_len,
336 &sense_key, &asc, &ascq);
337 if (sense_key != UNIT_ATTENTION || asc == 0xff)
342 dev_warn(&h->pdev->dev,
343 "%s: a state change detected, command retried\n",
347 dev_warn(&h->pdev->dev,
348 "%s: LUN failure detected\n", h->devname);
350 case REPORT_LUNS_CHANGED:
351 dev_warn(&h->pdev->dev,
352 "%s: report LUN data changed\n", h->devname);
354 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
355 * target (array) devices.
359 dev_warn(&h->pdev->dev,
360 "%s: a power on or device reset detected\n",
363 case UNIT_ATTENTION_CLEARED:
364 dev_warn(&h->pdev->dev,
365 "%s: unit attention cleared by another initiator\n",
369 dev_warn(&h->pdev->dev,
370 "%s: unknown unit attention detected\n",
377 static int check_for_busy(struct ctlr_info *h, struct CommandList *c)
379 if (c->err_info->CommandStatus != CMD_TARGET_STATUS ||
380 (c->err_info->ScsiStatus != SAM_STAT_BUSY &&
381 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL))
383 dev_warn(&h->pdev->dev, HPSA "device busy");
387 static u32 lockup_detected(struct ctlr_info *h);
388 static ssize_t host_show_lockup_detected(struct device *dev,
389 struct device_attribute *attr, char *buf)
393 struct Scsi_Host *shost = class_to_shost(dev);
395 h = shost_to_hba(shost);
396 ld = lockup_detected(h);
398 return sprintf(buf, "ld=%d\n", ld);
401 static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev,
402 struct device_attribute *attr,
403 const char *buf, size_t count)
407 struct Scsi_Host *shost = class_to_shost(dev);
410 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
412 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
413 strncpy(tmpbuf, buf, len);
415 if (sscanf(tmpbuf, "%d", &status) != 1)
417 h = shost_to_hba(shost);
418 h->acciopath_status = !!status;
419 dev_warn(&h->pdev->dev,
420 "hpsa: HP SSD Smart Path %s via sysfs update.\n",
421 h->acciopath_status ? "enabled" : "disabled");
425 static ssize_t host_store_raid_offload_debug(struct device *dev,
426 struct device_attribute *attr,
427 const char *buf, size_t count)
429 int debug_level, len;
431 struct Scsi_Host *shost = class_to_shost(dev);
434 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
436 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
437 strncpy(tmpbuf, buf, len);
439 if (sscanf(tmpbuf, "%d", &debug_level) != 1)
443 h = shost_to_hba(shost);
444 h->raid_offload_debug = debug_level;
445 dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n",
446 h->raid_offload_debug);
450 static ssize_t host_store_rescan(struct device *dev,
451 struct device_attribute *attr,
452 const char *buf, size_t count)
455 struct Scsi_Host *shost = class_to_shost(dev);
456 h = shost_to_hba(shost);
457 hpsa_scan_start(h->scsi_host);
461 static ssize_t host_show_firmware_revision(struct device *dev,
462 struct device_attribute *attr, char *buf)
465 struct Scsi_Host *shost = class_to_shost(dev);
466 unsigned char *fwrev;
468 h = shost_to_hba(shost);
469 if (!h->hba_inquiry_data)
471 fwrev = &h->hba_inquiry_data[32];
472 return snprintf(buf, 20, "%c%c%c%c\n",
473 fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
476 static ssize_t host_show_commands_outstanding(struct device *dev,
477 struct device_attribute *attr, char *buf)
479 struct Scsi_Host *shost = class_to_shost(dev);
480 struct ctlr_info *h = shost_to_hba(shost);
482 return snprintf(buf, 20, "%d\n",
483 atomic_read(&h->commands_outstanding));
486 static ssize_t host_show_transport_mode(struct device *dev,
487 struct device_attribute *attr, char *buf)
490 struct Scsi_Host *shost = class_to_shost(dev);
492 h = shost_to_hba(shost);
493 return snprintf(buf, 20, "%s\n",
494 h->transMethod & CFGTBL_Trans_Performant ?
495 "performant" : "simple");
498 static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev,
499 struct device_attribute *attr, char *buf)
502 struct Scsi_Host *shost = class_to_shost(dev);
504 h = shost_to_hba(shost);
505 return snprintf(buf, 30, "HP SSD Smart Path %s\n",
506 (h->acciopath_status == 1) ? "enabled" : "disabled");
509 /* List of controllers which cannot be hard reset on kexec with reset_devices */
510 static u32 unresettable_controller[] = {
511 0x324a103C, /* Smart Array P712m */
512 0x324b103C, /* Smart Array P711m */
513 0x3223103C, /* Smart Array P800 */
514 0x3234103C, /* Smart Array P400 */
515 0x3235103C, /* Smart Array P400i */
516 0x3211103C, /* Smart Array E200i */
517 0x3212103C, /* Smart Array E200 */
518 0x3213103C, /* Smart Array E200i */
519 0x3214103C, /* Smart Array E200i */
520 0x3215103C, /* Smart Array E200i */
521 0x3237103C, /* Smart Array E500 */
522 0x323D103C, /* Smart Array P700m */
523 0x40800E11, /* Smart Array 5i */
524 0x409C0E11, /* Smart Array 6400 */
525 0x409D0E11, /* Smart Array 6400 EM */
526 0x40700E11, /* Smart Array 5300 */
527 0x40820E11, /* Smart Array 532 */
528 0x40830E11, /* Smart Array 5312 */
529 0x409A0E11, /* Smart Array 641 */
530 0x409B0E11, /* Smart Array 642 */
531 0x40910E11, /* Smart Array 6i */
534 /* List of controllers which cannot even be soft reset */
535 static u32 soft_unresettable_controller[] = {
536 0x40800E11, /* Smart Array 5i */
537 0x40700E11, /* Smart Array 5300 */
538 0x40820E11, /* Smart Array 532 */
539 0x40830E11, /* Smart Array 5312 */
540 0x409A0E11, /* Smart Array 641 */
541 0x409B0E11, /* Smart Array 642 */
542 0x40910E11, /* Smart Array 6i */
543 /* Exclude 640x boards. These are two pci devices in one slot
544 * which share a battery backed cache module. One controls the
545 * cache, the other accesses the cache through the one that controls
546 * it. If we reset the one controlling the cache, the other will
547 * likely not be happy. Just forbid resetting this conjoined mess.
548 * The 640x isn't really supported by hpsa anyway.
550 0x409C0E11, /* Smart Array 6400 */
551 0x409D0E11, /* Smart Array 6400 EM */
554 static u32 needs_abort_tags_swizzled[] = {
555 0x323D103C, /* Smart Array P700m */
556 0x324a103C, /* Smart Array P712m */
557 0x324b103C, /* SmartArray P711m */
560 static int board_id_in_array(u32 a[], int nelems, u32 board_id)
564 for (i = 0; i < nelems; i++)
565 if (a[i] == board_id)
570 static int ctlr_is_hard_resettable(u32 board_id)
572 return !board_id_in_array(unresettable_controller,
573 ARRAY_SIZE(unresettable_controller), board_id);
576 static int ctlr_is_soft_resettable(u32 board_id)
578 return !board_id_in_array(soft_unresettable_controller,
579 ARRAY_SIZE(soft_unresettable_controller), board_id);
582 static int ctlr_is_resettable(u32 board_id)
584 return ctlr_is_hard_resettable(board_id) ||
585 ctlr_is_soft_resettable(board_id);
588 static int ctlr_needs_abort_tags_swizzled(u32 board_id)
590 return board_id_in_array(needs_abort_tags_swizzled,
591 ARRAY_SIZE(needs_abort_tags_swizzled), board_id);
594 static ssize_t host_show_resettable(struct device *dev,
595 struct device_attribute *attr, char *buf)
598 struct Scsi_Host *shost = class_to_shost(dev);
600 h = shost_to_hba(shost);
601 return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id));
604 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
606 return (scsi3addr[3] & 0xC0) == 0x40;
609 static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6",
610 "1(+0)ADM", "UNKNOWN"
612 #define HPSA_RAID_0 0
613 #define HPSA_RAID_4 1
614 #define HPSA_RAID_1 2 /* also used for RAID 10 */
615 #define HPSA_RAID_5 3 /* also used for RAID 50 */
616 #define HPSA_RAID_51 4
617 #define HPSA_RAID_6 5 /* also used for RAID 60 */
618 #define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
619 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
621 static ssize_t raid_level_show(struct device *dev,
622 struct device_attribute *attr, char *buf)
625 unsigned char rlevel;
627 struct scsi_device *sdev;
628 struct hpsa_scsi_dev_t *hdev;
631 sdev = to_scsi_device(dev);
632 h = sdev_to_hba(sdev);
633 spin_lock_irqsave(&h->lock, flags);
634 hdev = sdev->hostdata;
636 spin_unlock_irqrestore(&h->lock, flags);
640 /* Is this even a logical drive? */
641 if (!is_logical_dev_addr_mode(hdev->scsi3addr)) {
642 spin_unlock_irqrestore(&h->lock, flags);
643 l = snprintf(buf, PAGE_SIZE, "N/A\n");
647 rlevel = hdev->raid_level;
648 spin_unlock_irqrestore(&h->lock, flags);
649 if (rlevel > RAID_UNKNOWN)
650 rlevel = RAID_UNKNOWN;
651 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
655 static ssize_t lunid_show(struct device *dev,
656 struct device_attribute *attr, char *buf)
659 struct scsi_device *sdev;
660 struct hpsa_scsi_dev_t *hdev;
662 unsigned char lunid[8];
664 sdev = to_scsi_device(dev);
665 h = sdev_to_hba(sdev);
666 spin_lock_irqsave(&h->lock, flags);
667 hdev = sdev->hostdata;
669 spin_unlock_irqrestore(&h->lock, flags);
672 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
673 spin_unlock_irqrestore(&h->lock, flags);
674 return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
675 lunid[0], lunid[1], lunid[2], lunid[3],
676 lunid[4], lunid[5], lunid[6], lunid[7]);
679 static ssize_t unique_id_show(struct device *dev,
680 struct device_attribute *attr, char *buf)
683 struct scsi_device *sdev;
684 struct hpsa_scsi_dev_t *hdev;
686 unsigned char sn[16];
688 sdev = to_scsi_device(dev);
689 h = sdev_to_hba(sdev);
690 spin_lock_irqsave(&h->lock, flags);
691 hdev = sdev->hostdata;
693 spin_unlock_irqrestore(&h->lock, flags);
696 memcpy(sn, hdev->device_id, sizeof(sn));
697 spin_unlock_irqrestore(&h->lock, flags);
698 return snprintf(buf, 16 * 2 + 2,
699 "%02X%02X%02X%02X%02X%02X%02X%02X"
700 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
701 sn[0], sn[1], sn[2], sn[3],
702 sn[4], sn[5], sn[6], sn[7],
703 sn[8], sn[9], sn[10], sn[11],
704 sn[12], sn[13], sn[14], sn[15]);
707 static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev,
708 struct device_attribute *attr, char *buf)
711 struct scsi_device *sdev;
712 struct hpsa_scsi_dev_t *hdev;
716 sdev = to_scsi_device(dev);
717 h = sdev_to_hba(sdev);
718 spin_lock_irqsave(&h->lock, flags);
719 hdev = sdev->hostdata;
721 spin_unlock_irqrestore(&h->lock, flags);
724 offload_enabled = hdev->offload_enabled;
725 spin_unlock_irqrestore(&h->lock, flags);
726 return snprintf(buf, 20, "%d\n", offload_enabled);
730 #define PATH_STRING_LEN 50
732 static ssize_t path_info_show(struct device *dev,
733 struct device_attribute *attr, char *buf)
736 struct scsi_device *sdev;
737 struct hpsa_scsi_dev_t *hdev;
743 u8 path_map_index = 0;
745 unsigned char phys_connector[2];
746 unsigned char path[MAX_PATHS][PATH_STRING_LEN];
748 memset(path, 0, MAX_PATHS * PATH_STRING_LEN);
749 sdev = to_scsi_device(dev);
750 h = sdev_to_hba(sdev);
751 spin_lock_irqsave(&h->devlock, flags);
752 hdev = sdev->hostdata;
754 spin_unlock_irqrestore(&h->devlock, flags);
759 for (i = 0; i < MAX_PATHS; i++) {
760 path_map_index = 1<<i;
761 if (i == hdev->active_path_index)
763 else if (hdev->path_map & path_map_index)
768 output_len = snprintf(path[i],
769 PATH_STRING_LEN, "[%d:%d:%d:%d] %20.20s ",
770 h->scsi_host->host_no,
771 hdev->bus, hdev->target, hdev->lun,
772 scsi_device_type(hdev->devtype));
774 if (is_ext_target(h, hdev) ||
775 (hdev->devtype == TYPE_RAID) ||
776 is_logical_dev_addr_mode(hdev->scsi3addr)) {
777 output_len += snprintf(path[i] + output_len,
778 PATH_STRING_LEN, "%s\n",
784 memcpy(&phys_connector, &hdev->phys_connector[i],
785 sizeof(phys_connector));
786 if (phys_connector[0] < '0')
787 phys_connector[0] = '0';
788 if (phys_connector[1] < '0')
789 phys_connector[1] = '0';
790 if (hdev->phys_connector[i] > 0)
791 output_len += snprintf(path[i] + output_len,
795 if (hdev->devtype == TYPE_DISK &&
796 hdev->expose_state != HPSA_DO_NOT_EXPOSE) {
797 if (box == 0 || box == 0xFF) {
798 output_len += snprintf(path[i] + output_len,
803 output_len += snprintf(path[i] + output_len,
805 "BOX: %hhu BAY: %hhu %s\n",
808 } else if (box != 0 && box != 0xFF) {
809 output_len += snprintf(path[i] + output_len,
810 PATH_STRING_LEN, "BOX: %hhu %s\n",
813 output_len += snprintf(path[i] + output_len,
814 PATH_STRING_LEN, "%s\n", active);
817 spin_unlock_irqrestore(&h->devlock, flags);
818 return snprintf(buf, output_len+1, "%s%s%s%s%s%s%s%s",
819 path[0], path[1], path[2], path[3],
820 path[4], path[5], path[6], path[7]);
823 static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
824 static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
825 static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
826 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
827 static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
828 host_show_hp_ssd_smart_path_enabled, NULL);
829 static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL);
830 static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
831 host_show_hp_ssd_smart_path_status,
832 host_store_hp_ssd_smart_path_status);
833 static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL,
834 host_store_raid_offload_debug);
835 static DEVICE_ATTR(firmware_revision, S_IRUGO,
836 host_show_firmware_revision, NULL);
837 static DEVICE_ATTR(commands_outstanding, S_IRUGO,
838 host_show_commands_outstanding, NULL);
839 static DEVICE_ATTR(transport_mode, S_IRUGO,
840 host_show_transport_mode, NULL);
841 static DEVICE_ATTR(resettable, S_IRUGO,
842 host_show_resettable, NULL);
843 static DEVICE_ATTR(lockup_detected, S_IRUGO,
844 host_show_lockup_detected, NULL);
846 static struct device_attribute *hpsa_sdev_attrs[] = {
847 &dev_attr_raid_level,
850 &dev_attr_hp_ssd_smart_path_enabled,
852 &dev_attr_lockup_detected,
856 static struct device_attribute *hpsa_shost_attrs[] = {
858 &dev_attr_firmware_revision,
859 &dev_attr_commands_outstanding,
860 &dev_attr_transport_mode,
861 &dev_attr_resettable,
862 &dev_attr_hp_ssd_smart_path_status,
863 &dev_attr_raid_offload_debug,
867 #define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_ABORTS + \
868 HPSA_CMDS_RESERVED_FOR_DRIVER + HPSA_MAX_CONCURRENT_PASSTHRUS)
870 static struct scsi_host_template hpsa_driver_template = {
871 .module = THIS_MODULE,
874 .queuecommand = hpsa_scsi_queue_command,
875 .scan_start = hpsa_scan_start,
876 .scan_finished = hpsa_scan_finished,
877 .change_queue_depth = hpsa_change_queue_depth,
879 .use_clustering = ENABLE_CLUSTERING,
880 .eh_abort_handler = hpsa_eh_abort_handler,
881 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
883 .slave_alloc = hpsa_slave_alloc,
884 .slave_configure = hpsa_slave_configure,
885 .slave_destroy = hpsa_slave_destroy,
887 .compat_ioctl = hpsa_compat_ioctl,
889 .sdev_attrs = hpsa_sdev_attrs,
890 .shost_attrs = hpsa_shost_attrs,
895 static inline u32 next_command(struct ctlr_info *h, u8 q)
898 struct reply_queue_buffer *rq = &h->reply_queue[q];
900 if (h->transMethod & CFGTBL_Trans_io_accel1)
901 return h->access.command_completed(h, q);
903 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
904 return h->access.command_completed(h, q);
906 if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
907 a = rq->head[rq->current_entry];
909 atomic_dec(&h->commands_outstanding);
913 /* Check for wraparound */
914 if (rq->current_entry == h->max_commands) {
915 rq->current_entry = 0;
922 * There are some special bits in the bus address of the
923 * command that we have to set for the controller to know
924 * how to process the command:
926 * Normal performant mode:
927 * bit 0: 1 means performant mode, 0 means simple mode.
928 * bits 1-3 = block fetch table entry
929 * bits 4-6 = command type (== 0)
932 * bit 0 = "performant mode" bit.
933 * bits 1-3 = block fetch table entry
934 * bits 4-6 = command type (== 110)
935 * (command type is needed because ioaccel1 mode
936 * commands are submitted through the same register as normal
937 * mode commands, so this is how the controller knows whether
938 * the command is normal mode or ioaccel1 mode.)
941 * bit 0 = "performant mode" bit.
942 * bits 1-4 = block fetch table entry (note extra bit)
943 * bits 4-6 = not needed, because ioaccel2 mode has
944 * a separate special register for submitting commands.
948 * set_performant_mode: Modify the tag for cciss performant
949 * set bit 0 for pull model, bits 3-1 for block fetch
952 #define DEFAULT_REPLY_QUEUE (-1)
953 static void set_performant_mode(struct ctlr_info *h, struct CommandList *c,
956 if (likely(h->transMethod & CFGTBL_Trans_Performant)) {
957 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
958 if (unlikely(!h->msix_vector))
960 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
961 c->Header.ReplyQueue =
962 raw_smp_processor_id() % h->nreply_queues;
964 c->Header.ReplyQueue = reply_queue % h->nreply_queues;
968 static void set_ioaccel1_performant_mode(struct ctlr_info *h,
969 struct CommandList *c,
972 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
975 * Tell the controller to post the reply to the queue for this
976 * processor. This seems to give the best I/O throughput.
978 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
979 cp->ReplyQueue = smp_processor_id() % h->nreply_queues;
981 cp->ReplyQueue = reply_queue % h->nreply_queues;
983 * Set the bits in the address sent down to include:
984 * - performant mode bit (bit 0)
985 * - pull count (bits 1-3)
986 * - command type (bits 4-6)
988 c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) |
989 IOACCEL1_BUSADDR_CMDTYPE;
992 static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h,
993 struct CommandList *c,
996 struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *)
997 &h->ioaccel2_cmd_pool[c->cmdindex];
999 /* Tell the controller to post the reply to the queue for this
1000 * processor. This seems to give the best I/O throughput.
1002 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1003 cp->reply_queue = smp_processor_id() % h->nreply_queues;
1005 cp->reply_queue = reply_queue % h->nreply_queues;
1006 /* Set the bits in the address sent down to include:
1007 * - performant mode bit not used in ioaccel mode 2
1008 * - pull count (bits 0-3)
1009 * - command type isn't needed for ioaccel2
1011 c->busaddr |= h->ioaccel2_blockFetchTable[0];
1014 static void set_ioaccel2_performant_mode(struct ctlr_info *h,
1015 struct CommandList *c,
1018 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
1021 * Tell the controller to post the reply to the queue for this
1022 * processor. This seems to give the best I/O throughput.
1024 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1025 cp->reply_queue = smp_processor_id() % h->nreply_queues;
1027 cp->reply_queue = reply_queue % h->nreply_queues;
1029 * Set the bits in the address sent down to include:
1030 * - performant mode bit not used in ioaccel mode 2
1031 * - pull count (bits 0-3)
1032 * - command type isn't needed for ioaccel2
1034 c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]);
1037 static int is_firmware_flash_cmd(u8 *cdb)
1039 return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE;
1043 * During firmware flash, the heartbeat register may not update as frequently
1044 * as it should. So we dial down lockup detection during firmware flash. and
1045 * dial it back up when firmware flash completes.
1047 #define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ)
1048 #define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ)
1049 static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h,
1050 struct CommandList *c)
1052 if (!is_firmware_flash_cmd(c->Request.CDB))
1054 atomic_inc(&h->firmware_flash_in_progress);
1055 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH;
1058 static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h,
1059 struct CommandList *c)
1061 if (is_firmware_flash_cmd(c->Request.CDB) &&
1062 atomic_dec_and_test(&h->firmware_flash_in_progress))
1063 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
1066 static void __enqueue_cmd_and_start_io(struct ctlr_info *h,
1067 struct CommandList *c, int reply_queue)
1069 dial_down_lockup_detection_during_fw_flash(h, c);
1070 atomic_inc(&h->commands_outstanding);
1071 switch (c->cmd_type) {
1073 set_ioaccel1_performant_mode(h, c, reply_queue);
1074 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
1077 set_ioaccel2_performant_mode(h, c, reply_queue);
1078 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1081 set_ioaccel2_tmf_performant_mode(h, c, reply_queue);
1082 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1085 set_performant_mode(h, c, reply_queue);
1086 h->access.submit_command(h, c);
1090 static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c)
1092 if (unlikely(hpsa_is_pending_event(c)))
1093 return finish_cmd(c);
1095 __enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE);
1098 static inline int is_hba_lunid(unsigned char scsi3addr[])
1100 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
1103 static inline int is_scsi_rev_5(struct ctlr_info *h)
1105 if (!h->hba_inquiry_data)
1107 if ((h->hba_inquiry_data[2] & 0x07) == 5)
1112 static int hpsa_find_target_lun(struct ctlr_info *h,
1113 unsigned char scsi3addr[], int bus, int *target, int *lun)
1115 /* finds an unused bus, target, lun for a new physical device
1116 * assumes h->devlock is held
1119 DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES);
1121 bitmap_zero(lun_taken, HPSA_MAX_DEVICES);
1123 for (i = 0; i < h->ndevices; i++) {
1124 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
1125 __set_bit(h->dev[i]->target, lun_taken);
1128 i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES);
1129 if (i < HPSA_MAX_DEVICES) {
1138 static inline void hpsa_show_dev_msg(const char *level, struct ctlr_info *h,
1139 struct hpsa_scsi_dev_t *dev, char *description)
1141 if (h == NULL || h->pdev == NULL || h->scsi_host == NULL)
1144 dev_printk(level, &h->pdev->dev,
1145 "scsi %d:%d:%d:%d: %s %s %.8s %.16s RAID-%s SSDSmartPathCap%c En%c Exp=%d\n",
1146 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
1148 scsi_device_type(dev->devtype),
1151 dev->raid_level > RAID_UNKNOWN ?
1152 "RAID-?" : raid_label[dev->raid_level],
1153 dev->offload_config ? '+' : '-',
1154 dev->offload_enabled ? '+' : '-',
1158 /* Add an entry into h->dev[] array. */
1159 static int hpsa_scsi_add_entry(struct ctlr_info *h,
1160 struct hpsa_scsi_dev_t *device,
1161 struct hpsa_scsi_dev_t *added[], int *nadded)
1163 /* assumes h->devlock is held */
1164 int n = h->ndevices;
1166 unsigned char addr1[8], addr2[8];
1167 struct hpsa_scsi_dev_t *sd;
1169 if (n >= HPSA_MAX_DEVICES) {
1170 dev_err(&h->pdev->dev, "too many devices, some will be "
1175 /* physical devices do not have lun or target assigned until now. */
1176 if (device->lun != -1)
1177 /* Logical device, lun is already assigned. */
1180 /* If this device a non-zero lun of a multi-lun device
1181 * byte 4 of the 8-byte LUN addr will contain the logical
1182 * unit no, zero otherwise.
1184 if (device->scsi3addr[4] == 0) {
1185 /* This is not a non-zero lun of a multi-lun device */
1186 if (hpsa_find_target_lun(h, device->scsi3addr,
1187 device->bus, &device->target, &device->lun) != 0)
1192 /* This is a non-zero lun of a multi-lun device.
1193 * Search through our list and find the device which
1194 * has the same 8 byte LUN address, excepting byte 4 and 5.
1195 * Assign the same bus and target for this new LUN.
1196 * Use the logical unit number from the firmware.
1198 memcpy(addr1, device->scsi3addr, 8);
1201 for (i = 0; i < n; i++) {
1203 memcpy(addr2, sd->scsi3addr, 8);
1206 /* differ only in byte 4 and 5? */
1207 if (memcmp(addr1, addr2, 8) == 0) {
1208 device->bus = sd->bus;
1209 device->target = sd->target;
1210 device->lun = device->scsi3addr[4];
1214 if (device->lun == -1) {
1215 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
1216 " suspect firmware bug or unsupported hardware "
1217 "configuration.\n");
1225 added[*nadded] = device;
1227 hpsa_show_dev_msg(KERN_INFO, h, device,
1228 device->expose_state & HPSA_SCSI_ADD ? "added" : "masked");
1229 device->offload_to_be_enabled = device->offload_enabled;
1230 device->offload_enabled = 0;
1234 /* Update an entry in h->dev[] array. */
1235 static void hpsa_scsi_update_entry(struct ctlr_info *h,
1236 int entry, struct hpsa_scsi_dev_t *new_entry)
1238 int offload_enabled;
1239 /* assumes h->devlock is held */
1240 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1242 /* Raid level changed. */
1243 h->dev[entry]->raid_level = new_entry->raid_level;
1245 /* Raid offload parameters changed. Careful about the ordering. */
1246 if (new_entry->offload_config && new_entry->offload_enabled) {
1248 * if drive is newly offload_enabled, we want to copy the
1249 * raid map data first. If previously offload_enabled and
1250 * offload_config were set, raid map data had better be
1251 * the same as it was before. if raid map data is changed
1252 * then it had better be the case that
1253 * h->dev[entry]->offload_enabled is currently 0.
1255 h->dev[entry]->raid_map = new_entry->raid_map;
1256 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1258 if (new_entry->hba_ioaccel_enabled) {
1259 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1260 wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */
1262 h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled;
1263 h->dev[entry]->offload_config = new_entry->offload_config;
1264 h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror;
1265 h->dev[entry]->queue_depth = new_entry->queue_depth;
1268 * We can turn off ioaccel offload now, but need to delay turning
1269 * it on until we can update h->dev[entry]->phys_disk[], but we
1270 * can't do that until all the devices are updated.
1272 h->dev[entry]->offload_to_be_enabled = new_entry->offload_enabled;
1273 if (!new_entry->offload_enabled)
1274 h->dev[entry]->offload_enabled = 0;
1276 offload_enabled = h->dev[entry]->offload_enabled;
1277 h->dev[entry]->offload_enabled = h->dev[entry]->offload_to_be_enabled;
1278 hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated");
1279 h->dev[entry]->offload_enabled = offload_enabled;
1282 /* Replace an entry from h->dev[] array. */
1283 static void hpsa_scsi_replace_entry(struct ctlr_info *h,
1284 int entry, struct hpsa_scsi_dev_t *new_entry,
1285 struct hpsa_scsi_dev_t *added[], int *nadded,
1286 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1288 /* assumes h->devlock is held */
1289 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1290 removed[*nremoved] = h->dev[entry];
1294 * New physical devices won't have target/lun assigned yet
1295 * so we need to preserve the values in the slot we are replacing.
1297 if (new_entry->target == -1) {
1298 new_entry->target = h->dev[entry]->target;
1299 new_entry->lun = h->dev[entry]->lun;
1302 h->dev[entry] = new_entry;
1303 added[*nadded] = new_entry;
1305 hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced");
1306 new_entry->offload_to_be_enabled = new_entry->offload_enabled;
1307 new_entry->offload_enabled = 0;
1310 /* Remove an entry from h->dev[] array. */
1311 static void hpsa_scsi_remove_entry(struct ctlr_info *h, int entry,
1312 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1314 /* assumes h->devlock is held */
1316 struct hpsa_scsi_dev_t *sd;
1318 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1321 removed[*nremoved] = h->dev[entry];
1324 for (i = entry; i < h->ndevices-1; i++)
1325 h->dev[i] = h->dev[i+1];
1327 hpsa_show_dev_msg(KERN_INFO, h, sd, "removed");
1330 #define SCSI3ADDR_EQ(a, b) ( \
1331 (a)[7] == (b)[7] && \
1332 (a)[6] == (b)[6] && \
1333 (a)[5] == (b)[5] && \
1334 (a)[4] == (b)[4] && \
1335 (a)[3] == (b)[3] && \
1336 (a)[2] == (b)[2] && \
1337 (a)[1] == (b)[1] && \
1340 static void fixup_botched_add(struct ctlr_info *h,
1341 struct hpsa_scsi_dev_t *added)
1343 /* called when scsi_add_device fails in order to re-adjust
1344 * h->dev[] to match the mid layer's view.
1346 unsigned long flags;
1349 spin_lock_irqsave(&h->lock, flags);
1350 for (i = 0; i < h->ndevices; i++) {
1351 if (h->dev[i] == added) {
1352 for (j = i; j < h->ndevices-1; j++)
1353 h->dev[j] = h->dev[j+1];
1358 spin_unlock_irqrestore(&h->lock, flags);
1362 static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
1363 struct hpsa_scsi_dev_t *dev2)
1365 /* we compare everything except lun and target as these
1366 * are not yet assigned. Compare parts likely
1369 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
1370 sizeof(dev1->scsi3addr)) != 0)
1372 if (memcmp(dev1->device_id, dev2->device_id,
1373 sizeof(dev1->device_id)) != 0)
1375 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
1377 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
1379 if (dev1->devtype != dev2->devtype)
1381 if (dev1->bus != dev2->bus)
1386 static inline int device_updated(struct hpsa_scsi_dev_t *dev1,
1387 struct hpsa_scsi_dev_t *dev2)
1389 /* Device attributes that can change, but don't mean
1390 * that the device is a different device, nor that the OS
1391 * needs to be told anything about the change.
1393 if (dev1->raid_level != dev2->raid_level)
1395 if (dev1->offload_config != dev2->offload_config)
1397 if (dev1->offload_enabled != dev2->offload_enabled)
1399 if (!is_logical_dev_addr_mode(dev1->scsi3addr))
1400 if (dev1->queue_depth != dev2->queue_depth)
1405 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
1406 * and return needle location in *index. If scsi3addr matches, but not
1407 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
1408 * location in *index.
1409 * In the case of a minor device attribute change, such as RAID level, just
1410 * return DEVICE_UPDATED, along with the updated device's location in index.
1411 * If needle not found, return DEVICE_NOT_FOUND.
1413 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
1414 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
1418 #define DEVICE_NOT_FOUND 0
1419 #define DEVICE_CHANGED 1
1420 #define DEVICE_SAME 2
1421 #define DEVICE_UPDATED 3
1422 for (i = 0; i < haystack_size; i++) {
1423 if (haystack[i] == NULL) /* previously removed. */
1425 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
1427 if (device_is_the_same(needle, haystack[i])) {
1428 if (device_updated(needle, haystack[i]))
1429 return DEVICE_UPDATED;
1432 /* Keep offline devices offline */
1433 if (needle->volume_offline)
1434 return DEVICE_NOT_FOUND;
1435 return DEVICE_CHANGED;
1440 return DEVICE_NOT_FOUND;
1443 static void hpsa_monitor_offline_device(struct ctlr_info *h,
1444 unsigned char scsi3addr[])
1446 struct offline_device_entry *device;
1447 unsigned long flags;
1449 /* Check to see if device is already on the list */
1450 spin_lock_irqsave(&h->offline_device_lock, flags);
1451 list_for_each_entry(device, &h->offline_device_list, offline_list) {
1452 if (memcmp(device->scsi3addr, scsi3addr,
1453 sizeof(device->scsi3addr)) == 0) {
1454 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1458 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1460 /* Device is not on the list, add it. */
1461 device = kmalloc(sizeof(*device), GFP_KERNEL);
1463 dev_warn(&h->pdev->dev, "out of memory in %s\n", __func__);
1466 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1467 spin_lock_irqsave(&h->offline_device_lock, flags);
1468 list_add_tail(&device->offline_list, &h->offline_device_list);
1469 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1472 /* Print a message explaining various offline volume states */
1473 static void hpsa_show_volume_status(struct ctlr_info *h,
1474 struct hpsa_scsi_dev_t *sd)
1476 if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED)
1477 dev_info(&h->pdev->dev,
1478 "C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n",
1479 h->scsi_host->host_no,
1480 sd->bus, sd->target, sd->lun);
1481 switch (sd->volume_offline) {
1484 case HPSA_LV_UNDERGOING_ERASE:
1485 dev_info(&h->pdev->dev,
1486 "C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n",
1487 h->scsi_host->host_no,
1488 sd->bus, sd->target, sd->lun);
1490 case HPSA_LV_NOT_AVAILABLE:
1491 dev_info(&h->pdev->dev,
1492 "C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n",
1493 h->scsi_host->host_no,
1494 sd->bus, sd->target, sd->lun);
1496 case HPSA_LV_UNDERGOING_RPI:
1497 dev_info(&h->pdev->dev,
1498 "C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n",
1499 h->scsi_host->host_no,
1500 sd->bus, sd->target, sd->lun);
1502 case HPSA_LV_PENDING_RPI:
1503 dev_info(&h->pdev->dev,
1504 "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n",
1505 h->scsi_host->host_no,
1506 sd->bus, sd->target, sd->lun);
1508 case HPSA_LV_ENCRYPTED_NO_KEY:
1509 dev_info(&h->pdev->dev,
1510 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n",
1511 h->scsi_host->host_no,
1512 sd->bus, sd->target, sd->lun);
1514 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
1515 dev_info(&h->pdev->dev,
1516 "C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n",
1517 h->scsi_host->host_no,
1518 sd->bus, sd->target, sd->lun);
1520 case HPSA_LV_UNDERGOING_ENCRYPTION:
1521 dev_info(&h->pdev->dev,
1522 "C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n",
1523 h->scsi_host->host_no,
1524 sd->bus, sd->target, sd->lun);
1526 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
1527 dev_info(&h->pdev->dev,
1528 "C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n",
1529 h->scsi_host->host_no,
1530 sd->bus, sd->target, sd->lun);
1532 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1533 dev_info(&h->pdev->dev,
1534 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n",
1535 h->scsi_host->host_no,
1536 sd->bus, sd->target, sd->lun);
1538 case HPSA_LV_PENDING_ENCRYPTION:
1539 dev_info(&h->pdev->dev,
1540 "C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n",
1541 h->scsi_host->host_no,
1542 sd->bus, sd->target, sd->lun);
1544 case HPSA_LV_PENDING_ENCRYPTION_REKEYING:
1545 dev_info(&h->pdev->dev,
1546 "C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n",
1547 h->scsi_host->host_no,
1548 sd->bus, sd->target, sd->lun);
1554 * Figure the list of physical drive pointers for a logical drive with
1555 * raid offload configured.
1557 static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h,
1558 struct hpsa_scsi_dev_t *dev[], int ndevices,
1559 struct hpsa_scsi_dev_t *logical_drive)
1561 struct raid_map_data *map = &logical_drive->raid_map;
1562 struct raid_map_disk_data *dd = &map->data[0];
1564 int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
1565 le16_to_cpu(map->metadata_disks_per_row);
1566 int nraid_map_entries = le16_to_cpu(map->row_cnt) *
1567 le16_to_cpu(map->layout_map_count) *
1568 total_disks_per_row;
1569 int nphys_disk = le16_to_cpu(map->layout_map_count) *
1570 total_disks_per_row;
1573 if (nraid_map_entries > RAID_MAP_MAX_ENTRIES)
1574 nraid_map_entries = RAID_MAP_MAX_ENTRIES;
1576 logical_drive->nphysical_disks = nraid_map_entries;
1579 for (i = 0; i < nraid_map_entries; i++) {
1580 logical_drive->phys_disk[i] = NULL;
1581 if (!logical_drive->offload_config)
1583 for (j = 0; j < ndevices; j++) {
1584 if (dev[j]->devtype != TYPE_DISK)
1586 if (is_logical_dev_addr_mode(dev[j]->scsi3addr))
1588 if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle)
1591 logical_drive->phys_disk[i] = dev[j];
1593 qdepth = min(h->nr_cmds, qdepth +
1594 logical_drive->phys_disk[i]->queue_depth);
1599 * This can happen if a physical drive is removed and
1600 * the logical drive is degraded. In that case, the RAID
1601 * map data will refer to a physical disk which isn't actually
1602 * present. And in that case offload_enabled should already
1603 * be 0, but we'll turn it off here just in case
1605 if (!logical_drive->phys_disk[i]) {
1606 logical_drive->offload_enabled = 0;
1607 logical_drive->offload_to_be_enabled = 0;
1608 logical_drive->queue_depth = 8;
1611 if (nraid_map_entries)
1613 * This is correct for reads, too high for full stripe writes,
1614 * way too high for partial stripe writes
1616 logical_drive->queue_depth = qdepth;
1618 logical_drive->queue_depth = h->nr_cmds;
1621 static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h,
1622 struct hpsa_scsi_dev_t *dev[], int ndevices)
1626 for (i = 0; i < ndevices; i++) {
1627 if (dev[i]->devtype != TYPE_DISK)
1629 if (!is_logical_dev_addr_mode(dev[i]->scsi3addr))
1633 * If offload is currently enabled, the RAID map and
1634 * phys_disk[] assignment *better* not be changing
1635 * and since it isn't changing, we do not need to
1638 if (dev[i]->offload_enabled)
1641 hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]);
1645 static void adjust_hpsa_scsi_table(struct ctlr_info *h,
1646 struct hpsa_scsi_dev_t *sd[], int nsds)
1648 /* sd contains scsi3 addresses and devtypes, and inquiry
1649 * data. This function takes what's in sd to be the current
1650 * reality and updates h->dev[] to reflect that reality.
1652 int i, entry, device_change, changes = 0;
1653 struct hpsa_scsi_dev_t *csd;
1654 unsigned long flags;
1655 struct hpsa_scsi_dev_t **added, **removed;
1656 int nadded, nremoved;
1657 struct Scsi_Host *sh = NULL;
1659 added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL);
1660 removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL);
1662 if (!added || !removed) {
1663 dev_warn(&h->pdev->dev, "out of memory in "
1664 "adjust_hpsa_scsi_table\n");
1668 spin_lock_irqsave(&h->devlock, flags);
1670 /* find any devices in h->dev[] that are not in
1671 * sd[] and remove them from h->dev[], and for any
1672 * devices which have changed, remove the old device
1673 * info and add the new device info.
1674 * If minor device attributes change, just update
1675 * the existing device structure.
1680 while (i < h->ndevices) {
1682 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
1683 if (device_change == DEVICE_NOT_FOUND) {
1685 hpsa_scsi_remove_entry(h, i, removed, &nremoved);
1686 continue; /* remove ^^^, hence i not incremented */
1687 } else if (device_change == DEVICE_CHANGED) {
1689 hpsa_scsi_replace_entry(h, i, sd[entry],
1690 added, &nadded, removed, &nremoved);
1691 /* Set it to NULL to prevent it from being freed
1692 * at the bottom of hpsa_update_scsi_devices()
1695 } else if (device_change == DEVICE_UPDATED) {
1696 hpsa_scsi_update_entry(h, i, sd[entry]);
1701 /* Now, make sure every device listed in sd[] is also
1702 * listed in h->dev[], adding them if they aren't found
1705 for (i = 0; i < nsds; i++) {
1706 if (!sd[i]) /* if already added above. */
1709 /* Don't add devices which are NOT READY, FORMAT IN PROGRESS
1710 * as the SCSI mid-layer does not handle such devices well.
1711 * It relentlessly loops sending TUR at 3Hz, then READ(10)
1712 * at 160Hz, and prevents the system from coming up.
1714 if (sd[i]->volume_offline) {
1715 hpsa_show_volume_status(h, sd[i]);
1716 hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline");
1720 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
1721 h->ndevices, &entry);
1722 if (device_change == DEVICE_NOT_FOUND) {
1724 if (hpsa_scsi_add_entry(h, sd[i], added, &nadded) != 0)
1726 sd[i] = NULL; /* prevent from being freed later. */
1727 } else if (device_change == DEVICE_CHANGED) {
1728 /* should never happen... */
1730 dev_warn(&h->pdev->dev,
1731 "device unexpectedly changed.\n");
1732 /* but if it does happen, we just ignore that device */
1735 hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices);
1737 /* Now that h->dev[]->phys_disk[] is coherent, we can enable
1738 * any logical drives that need it enabled.
1740 for (i = 0; i < h->ndevices; i++)
1741 h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled;
1743 spin_unlock_irqrestore(&h->devlock, flags);
1745 /* Monitor devices which are in one of several NOT READY states to be
1746 * brought online later. This must be done without holding h->devlock,
1747 * so don't touch h->dev[]
1749 for (i = 0; i < nsds; i++) {
1750 if (!sd[i]) /* if already added above. */
1752 if (sd[i]->volume_offline)
1753 hpsa_monitor_offline_device(h, sd[i]->scsi3addr);
1756 /* Don't notify scsi mid layer of any changes the first time through
1757 * (or if there are no changes) scsi_scan_host will do it later the
1758 * first time through.
1764 /* Notify scsi mid layer of any removed devices */
1765 for (i = 0; i < nremoved; i++) {
1766 if (removed[i]->expose_state & HPSA_SCSI_ADD) {
1767 struct scsi_device *sdev =
1768 scsi_device_lookup(sh, removed[i]->bus,
1769 removed[i]->target, removed[i]->lun);
1771 scsi_remove_device(sdev);
1772 scsi_device_put(sdev);
1775 * We don't expect to get here.
1776 * future cmds to this device will get selection
1777 * timeout as if the device was gone.
1779 hpsa_show_dev_msg(KERN_WARNING, h, removed[i],
1780 "didn't find device for removal.");
1787 /* Notify scsi mid layer of any added devices */
1788 for (i = 0; i < nadded; i++) {
1789 if (!(added[i]->expose_state & HPSA_SCSI_ADD))
1791 if (scsi_add_device(sh, added[i]->bus,
1792 added[i]->target, added[i]->lun) == 0)
1794 hpsa_show_dev_msg(KERN_WARNING, h, added[i],
1795 "addition failed, device not added.");
1796 /* now we have to remove it from h->dev,
1797 * since it didn't get added to scsi mid layer
1799 fixup_botched_add(h, added[i]);
1809 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t *
1810 * Assume's h->devlock is held.
1812 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
1813 int bus, int target, int lun)
1816 struct hpsa_scsi_dev_t *sd;
1818 for (i = 0; i < h->ndevices; i++) {
1820 if (sd->bus == bus && sd->target == target && sd->lun == lun)
1826 static int hpsa_slave_alloc(struct scsi_device *sdev)
1828 struct hpsa_scsi_dev_t *sd;
1829 unsigned long flags;
1830 struct ctlr_info *h;
1832 h = sdev_to_hba(sdev);
1833 spin_lock_irqsave(&h->devlock, flags);
1834 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
1835 sdev_id(sdev), sdev->lun);
1837 atomic_set(&sd->ioaccel_cmds_out, 0);
1838 sdev->hostdata = (sd->expose_state & HPSA_SCSI_ADD) ? sd : NULL;
1840 sdev->hostdata = NULL;
1841 spin_unlock_irqrestore(&h->devlock, flags);
1845 /* configure scsi device based on internal per-device structure */
1846 static int hpsa_slave_configure(struct scsi_device *sdev)
1848 struct hpsa_scsi_dev_t *sd;
1851 sd = sdev->hostdata;
1852 sdev->no_uld_attach = !sd || !(sd->expose_state & HPSA_ULD_ATTACH);
1855 queue_depth = sd->queue_depth != 0 ?
1856 sd->queue_depth : sdev->host->can_queue;
1858 queue_depth = sdev->host->can_queue;
1860 scsi_change_queue_depth(sdev, queue_depth);
1865 static void hpsa_slave_destroy(struct scsi_device *sdev)
1867 /* nothing to do. */
1870 static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
1874 if (!h->ioaccel2_cmd_sg_list)
1876 for (i = 0; i < h->nr_cmds; i++) {
1877 kfree(h->ioaccel2_cmd_sg_list[i]);
1878 h->ioaccel2_cmd_sg_list[i] = NULL;
1880 kfree(h->ioaccel2_cmd_sg_list);
1881 h->ioaccel2_cmd_sg_list = NULL;
1884 static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
1888 if (h->chainsize <= 0)
1891 h->ioaccel2_cmd_sg_list =
1892 kzalloc(sizeof(*h->ioaccel2_cmd_sg_list) * h->nr_cmds,
1894 if (!h->ioaccel2_cmd_sg_list)
1896 for (i = 0; i < h->nr_cmds; i++) {
1897 h->ioaccel2_cmd_sg_list[i] =
1898 kmalloc(sizeof(*h->ioaccel2_cmd_sg_list[i]) *
1899 h->maxsgentries, GFP_KERNEL);
1900 if (!h->ioaccel2_cmd_sg_list[i])
1906 hpsa_free_ioaccel2_sg_chain_blocks(h);
1910 static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
1914 if (!h->cmd_sg_list)
1916 for (i = 0; i < h->nr_cmds; i++) {
1917 kfree(h->cmd_sg_list[i]);
1918 h->cmd_sg_list[i] = NULL;
1920 kfree(h->cmd_sg_list);
1921 h->cmd_sg_list = NULL;
1924 static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h)
1928 if (h->chainsize <= 0)
1931 h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds,
1933 if (!h->cmd_sg_list) {
1934 dev_err(&h->pdev->dev, "Failed to allocate SG list\n");
1937 for (i = 0; i < h->nr_cmds; i++) {
1938 h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) *
1939 h->chainsize, GFP_KERNEL);
1940 if (!h->cmd_sg_list[i]) {
1941 dev_err(&h->pdev->dev, "Failed to allocate cmd SG\n");
1948 hpsa_free_sg_chain_blocks(h);
1952 static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h,
1953 struct io_accel2_cmd *cp, struct CommandList *c)
1955 struct ioaccel2_sg_element *chain_block;
1959 chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex];
1960 chain_size = le32_to_cpu(cp->data_len);
1961 temp64 = pci_map_single(h->pdev, chain_block, chain_size,
1963 if (dma_mapping_error(&h->pdev->dev, temp64)) {
1964 /* prevent subsequent unmapping */
1965 cp->sg->address = 0;
1968 cp->sg->address = cpu_to_le64(temp64);
1972 static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h,
1973 struct io_accel2_cmd *cp)
1975 struct ioaccel2_sg_element *chain_sg;
1980 temp64 = le64_to_cpu(chain_sg->address);
1981 chain_size = le32_to_cpu(cp->data_len);
1982 pci_unmap_single(h->pdev, temp64, chain_size, PCI_DMA_TODEVICE);
1985 static int hpsa_map_sg_chain_block(struct ctlr_info *h,
1986 struct CommandList *c)
1988 struct SGDescriptor *chain_sg, *chain_block;
1992 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
1993 chain_block = h->cmd_sg_list[c->cmdindex];
1994 chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN);
1995 chain_len = sizeof(*chain_sg) *
1996 (le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries);
1997 chain_sg->Len = cpu_to_le32(chain_len);
1998 temp64 = pci_map_single(h->pdev, chain_block, chain_len,
2000 if (dma_mapping_error(&h->pdev->dev, temp64)) {
2001 /* prevent subsequent unmapping */
2002 chain_sg->Addr = cpu_to_le64(0);
2005 chain_sg->Addr = cpu_to_le64(temp64);
2009 static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
2010 struct CommandList *c)
2012 struct SGDescriptor *chain_sg;
2014 if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries)
2017 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2018 pci_unmap_single(h->pdev, le64_to_cpu(chain_sg->Addr),
2019 le32_to_cpu(chain_sg->Len), PCI_DMA_TODEVICE);
2023 /* Decode the various types of errors on ioaccel2 path.
2024 * Return 1 for any error that should generate a RAID path retry.
2025 * Return 0 for errors that don't require a RAID path retry.
2027 static int handle_ioaccel_mode2_error(struct ctlr_info *h,
2028 struct CommandList *c,
2029 struct scsi_cmnd *cmd,
2030 struct io_accel2_cmd *c2)
2034 u32 ioaccel2_resid = 0;
2036 switch (c2->error_data.serv_response) {
2037 case IOACCEL2_SERV_RESPONSE_COMPLETE:
2038 switch (c2->error_data.status) {
2039 case IOACCEL2_STATUS_SR_TASK_COMP_GOOD:
2041 case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND:
2042 cmd->result |= SAM_STAT_CHECK_CONDITION;
2043 if (c2->error_data.data_present !=
2044 IOACCEL2_SENSE_DATA_PRESENT) {
2045 memset(cmd->sense_buffer, 0,
2046 SCSI_SENSE_BUFFERSIZE);
2049 /* copy the sense data */
2050 data_len = c2->error_data.sense_data_len;
2051 if (data_len > SCSI_SENSE_BUFFERSIZE)
2052 data_len = SCSI_SENSE_BUFFERSIZE;
2053 if (data_len > sizeof(c2->error_data.sense_data_buff))
2055 sizeof(c2->error_data.sense_data_buff);
2056 memcpy(cmd->sense_buffer,
2057 c2->error_data.sense_data_buff, data_len);
2060 case IOACCEL2_STATUS_SR_TASK_COMP_BUSY:
2063 case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON:
2066 case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL:
2069 case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED:
2077 case IOACCEL2_SERV_RESPONSE_FAILURE:
2078 switch (c2->error_data.status) {
2079 case IOACCEL2_STATUS_SR_IO_ERROR:
2080 case IOACCEL2_STATUS_SR_IO_ABORTED:
2081 case IOACCEL2_STATUS_SR_OVERRUN:
2084 case IOACCEL2_STATUS_SR_UNDERRUN:
2085 cmd->result = (DID_OK << 16); /* host byte */
2086 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2087 ioaccel2_resid = get_unaligned_le32(
2088 &c2->error_data.resid_cnt[0]);
2089 scsi_set_resid(cmd, ioaccel2_resid);
2091 case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE:
2092 case IOACCEL2_STATUS_SR_INVALID_DEVICE:
2093 case IOACCEL2_STATUS_SR_IOACCEL_DISABLED:
2094 /* We will get an event from ctlr to trigger rescan */
2101 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
2103 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
2105 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
2108 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
2115 return retry; /* retry on raid path? */
2118 static void hpsa_cmd_resolve_events(struct ctlr_info *h,
2119 struct CommandList *c)
2121 bool do_wake = false;
2124 * Prevent the following race in the abort handler:
2126 * 1. LLD is requested to abort a SCSI command
2127 * 2. The SCSI command completes
2128 * 3. The struct CommandList associated with step 2 is made available
2129 * 4. New I/O request to LLD to another LUN re-uses struct CommandList
2130 * 5. Abort handler follows scsi_cmnd->host_scribble and
2131 * finds struct CommandList and tries to aborts it
2132 * Now we have aborted the wrong command.
2134 * Reset c->scsi_cmd here so that the abort or reset handler will know
2135 * this command has completed. Then, check to see if the handler is
2136 * waiting for this command, and, if so, wake it.
2138 c->scsi_cmd = SCSI_CMD_IDLE;
2139 mb(); /* Declare command idle before checking for pending events. */
2140 if (c->abort_pending) {
2142 c->abort_pending = false;
2144 if (c->reset_pending) {
2145 unsigned long flags;
2146 struct hpsa_scsi_dev_t *dev;
2149 * There appears to be a reset pending; lock the lock and
2150 * reconfirm. If so, then decrement the count of outstanding
2151 * commands and wake the reset command if this is the last one.
2153 spin_lock_irqsave(&h->lock, flags);
2154 dev = c->reset_pending; /* Re-fetch under the lock. */
2155 if (dev && atomic_dec_and_test(&dev->reset_cmds_out))
2157 c->reset_pending = NULL;
2158 spin_unlock_irqrestore(&h->lock, flags);
2162 wake_up_all(&h->event_sync_wait_queue);
2165 static void hpsa_cmd_resolve_and_free(struct ctlr_info *h,
2166 struct CommandList *c)
2168 hpsa_cmd_resolve_events(h, c);
2169 cmd_tagged_free(h, c);
2172 static void hpsa_cmd_free_and_done(struct ctlr_info *h,
2173 struct CommandList *c, struct scsi_cmnd *cmd)
2175 hpsa_cmd_resolve_and_free(h, c);
2176 cmd->scsi_done(cmd);
2179 static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c)
2181 INIT_WORK(&c->work, hpsa_command_resubmit_worker);
2182 queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work);
2185 static void hpsa_set_scsi_cmd_aborted(struct scsi_cmnd *cmd)
2187 cmd->result = DID_ABORT << 16;
2190 static void hpsa_cmd_abort_and_free(struct ctlr_info *h, struct CommandList *c,
2191 struct scsi_cmnd *cmd)
2193 hpsa_set_scsi_cmd_aborted(cmd);
2194 dev_warn(&h->pdev->dev, "CDB %16phN was aborted with status 0x%x\n",
2195 c->Request.CDB, c->err_info->ScsiStatus);
2196 hpsa_cmd_resolve_and_free(h, c);
2199 static void process_ioaccel2_completion(struct ctlr_info *h,
2200 struct CommandList *c, struct scsi_cmnd *cmd,
2201 struct hpsa_scsi_dev_t *dev)
2203 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2205 /* check for good status */
2206 if (likely(c2->error_data.serv_response == 0 &&
2207 c2->error_data.status == 0))
2208 return hpsa_cmd_free_and_done(h, c, cmd);
2211 * Any RAID offload error results in retry which will use
2212 * the normal I/O path so the controller can handle whatever's
2215 if (is_logical_dev_addr_mode(dev->scsi3addr) &&
2216 c2->error_data.serv_response ==
2217 IOACCEL2_SERV_RESPONSE_FAILURE) {
2218 if (c2->error_data.status ==
2219 IOACCEL2_STATUS_SR_IOACCEL_DISABLED)
2220 dev->offload_enabled = 0;
2222 return hpsa_retry_cmd(h, c);
2225 if (handle_ioaccel_mode2_error(h, c, cmd, c2))
2226 return hpsa_retry_cmd(h, c);
2228 return hpsa_cmd_free_and_done(h, c, cmd);
2231 /* Returns 0 on success, < 0 otherwise. */
2232 static int hpsa_evaluate_tmf_status(struct ctlr_info *h,
2233 struct CommandList *cp)
2235 u8 tmf_status = cp->err_info->ScsiStatus;
2237 switch (tmf_status) {
2238 case CISS_TMF_COMPLETE:
2240 * CISS_TMF_COMPLETE never happens, instead,
2241 * ei->CommandStatus == 0 for this case.
2243 case CISS_TMF_SUCCESS:
2245 case CISS_TMF_INVALID_FRAME:
2246 case CISS_TMF_NOT_SUPPORTED:
2247 case CISS_TMF_FAILED:
2248 case CISS_TMF_WRONG_LUN:
2249 case CISS_TMF_OVERLAPPED_TAG:
2252 dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n",
2259 static void complete_scsi_command(struct CommandList *cp)
2261 struct scsi_cmnd *cmd;
2262 struct ctlr_info *h;
2263 struct ErrorInfo *ei;
2264 struct hpsa_scsi_dev_t *dev;
2265 struct io_accel2_cmd *c2;
2268 u8 asc; /* additional sense code */
2269 u8 ascq; /* additional sense code qualifier */
2270 unsigned long sense_data_size;
2275 dev = cmd->device->hostdata;
2276 c2 = &h->ioaccel2_cmd_pool[cp->cmdindex];
2278 scsi_dma_unmap(cmd); /* undo the DMA mappings */
2279 if ((cp->cmd_type == CMD_SCSI) &&
2280 (le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries))
2281 hpsa_unmap_sg_chain_block(h, cp);
2283 if ((cp->cmd_type == CMD_IOACCEL2) &&
2284 (c2->sg[0].chain_indicator == IOACCEL2_CHAIN))
2285 hpsa_unmap_ioaccel2_sg_chain_block(h, c2);
2287 cmd->result = (DID_OK << 16); /* host byte */
2288 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2290 if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1)
2291 atomic_dec(&cp->phys_disk->ioaccel_cmds_out);
2294 * We check for lockup status here as it may be set for
2295 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by
2296 * fail_all_oustanding_cmds()
2298 if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) {
2299 /* DID_NO_CONNECT will prevent a retry */
2300 cmd->result = DID_NO_CONNECT << 16;
2301 return hpsa_cmd_free_and_done(h, cp, cmd);
2304 if ((unlikely(hpsa_is_pending_event(cp)))) {
2305 if (cp->reset_pending)
2306 return hpsa_cmd_resolve_and_free(h, cp);
2307 if (cp->abort_pending)
2308 return hpsa_cmd_abort_and_free(h, cp, cmd);
2311 if (cp->cmd_type == CMD_IOACCEL2)
2312 return process_ioaccel2_completion(h, cp, cmd, dev);
2314 scsi_set_resid(cmd, ei->ResidualCnt);
2315 if (ei->CommandStatus == 0)
2316 return hpsa_cmd_free_and_done(h, cp, cmd);
2318 /* For I/O accelerator commands, copy over some fields to the normal
2319 * CISS header used below for error handling.
2321 if (cp->cmd_type == CMD_IOACCEL1) {
2322 struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex];
2323 cp->Header.SGList = scsi_sg_count(cmd);
2324 cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList);
2325 cp->Request.CDBLen = le16_to_cpu(c->io_flags) &
2326 IOACCEL1_IOFLAGS_CDBLEN_MASK;
2327 cp->Header.tag = c->tag;
2328 memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8);
2329 memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen);
2331 /* Any RAID offload error results in retry which will use
2332 * the normal I/O path so the controller can handle whatever's
2335 if (is_logical_dev_addr_mode(dev->scsi3addr)) {
2336 if (ei->CommandStatus == CMD_IOACCEL_DISABLED)
2337 dev->offload_enabled = 0;
2338 return hpsa_retry_cmd(h, cp);
2342 /* an error has occurred */
2343 switch (ei->CommandStatus) {
2345 case CMD_TARGET_STATUS:
2346 cmd->result |= ei->ScsiStatus;
2347 /* copy the sense data */
2348 if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
2349 sense_data_size = SCSI_SENSE_BUFFERSIZE;
2351 sense_data_size = sizeof(ei->SenseInfo);
2352 if (ei->SenseLen < sense_data_size)
2353 sense_data_size = ei->SenseLen;
2354 memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
2356 decode_sense_data(ei->SenseInfo, sense_data_size,
2357 &sense_key, &asc, &ascq);
2358 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
2359 if (sense_key == ABORTED_COMMAND) {
2360 cmd->result |= DID_SOFT_ERROR << 16;
2365 /* Problem was not a check condition
2366 * Pass it up to the upper layers...
2368 if (ei->ScsiStatus) {
2369 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
2370 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
2371 "Returning result: 0x%x\n",
2373 sense_key, asc, ascq,
2375 } else { /* scsi status is zero??? How??? */
2376 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
2377 "Returning no connection.\n", cp),
2379 /* Ordinarily, this case should never happen,
2380 * but there is a bug in some released firmware
2381 * revisions that allows it to happen if, for
2382 * example, a 4100 backplane loses power and
2383 * the tape drive is in it. We assume that
2384 * it's a fatal error of some kind because we
2385 * can't show that it wasn't. We will make it
2386 * look like selection timeout since that is
2387 * the most common reason for this to occur,
2388 * and it's severe enough.
2391 cmd->result = DID_NO_CONNECT << 16;
2395 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2397 case CMD_DATA_OVERRUN:
2398 dev_warn(&h->pdev->dev,
2399 "CDB %16phN data overrun\n", cp->Request.CDB);
2402 /* print_bytes(cp, sizeof(*cp), 1, 0);
2404 /* We get CMD_INVALID if you address a non-existent device
2405 * instead of a selection timeout (no response). You will
2406 * see this if you yank out a drive, then try to access it.
2407 * This is kind of a shame because it means that any other
2408 * CMD_INVALID (e.g. driver bug) will get interpreted as a
2409 * missing target. */
2410 cmd->result = DID_NO_CONNECT << 16;
2413 case CMD_PROTOCOL_ERR:
2414 cmd->result = DID_ERROR << 16;
2415 dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n",
2418 case CMD_HARDWARE_ERR:
2419 cmd->result = DID_ERROR << 16;
2420 dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n",
2423 case CMD_CONNECTION_LOST:
2424 cmd->result = DID_ERROR << 16;
2425 dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n",
2429 /* Return now to avoid calling scsi_done(). */
2430 return hpsa_cmd_abort_and_free(h, cp, cmd);
2431 case CMD_ABORT_FAILED:
2432 cmd->result = DID_ERROR << 16;
2433 dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n",
2436 case CMD_UNSOLICITED_ABORT:
2437 cmd->result = DID_SOFT_ERROR << 16; /* retry the command */
2438 dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n",
2442 cmd->result = DID_TIME_OUT << 16;
2443 dev_warn(&h->pdev->dev, "CDB %16phN timed out\n",
2446 case CMD_UNABORTABLE:
2447 cmd->result = DID_ERROR << 16;
2448 dev_warn(&h->pdev->dev, "Command unabortable\n");
2450 case CMD_TMF_STATUS:
2451 if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */
2452 cmd->result = DID_ERROR << 16;
2454 case CMD_IOACCEL_DISABLED:
2455 /* This only handles the direct pass-through case since RAID
2456 * offload is handled above. Just attempt a retry.
2458 cmd->result = DID_SOFT_ERROR << 16;
2459 dev_warn(&h->pdev->dev,
2460 "cp %p had HP SSD Smart Path error\n", cp);
2463 cmd->result = DID_ERROR << 16;
2464 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
2465 cp, ei->CommandStatus);
2468 return hpsa_cmd_free_and_done(h, cp, cmd);
2471 static void hpsa_pci_unmap(struct pci_dev *pdev,
2472 struct CommandList *c, int sg_used, int data_direction)
2476 for (i = 0; i < sg_used; i++)
2477 pci_unmap_single(pdev, (dma_addr_t) le64_to_cpu(c->SG[i].Addr),
2478 le32_to_cpu(c->SG[i].Len),
2482 static int hpsa_map_one(struct pci_dev *pdev,
2483 struct CommandList *cp,
2490 if (buflen == 0 || data_direction == PCI_DMA_NONE) {
2491 cp->Header.SGList = 0;
2492 cp->Header.SGTotal = cpu_to_le16(0);
2496 addr64 = pci_map_single(pdev, buf, buflen, data_direction);
2497 if (dma_mapping_error(&pdev->dev, addr64)) {
2498 /* Prevent subsequent unmap of something never mapped */
2499 cp->Header.SGList = 0;
2500 cp->Header.SGTotal = cpu_to_le16(0);
2503 cp->SG[0].Addr = cpu_to_le64(addr64);
2504 cp->SG[0].Len = cpu_to_le32(buflen);
2505 cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */
2506 cp->Header.SGList = 1; /* no. SGs contig in this cmd */
2507 cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */
2511 #define NO_TIMEOUT ((unsigned long) -1)
2512 #define DEFAULT_TIMEOUT 30000 /* milliseconds */
2513 static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
2514 struct CommandList *c, int reply_queue, unsigned long timeout_msecs)
2516 DECLARE_COMPLETION_ONSTACK(wait);
2519 __enqueue_cmd_and_start_io(h, c, reply_queue);
2520 if (timeout_msecs == NO_TIMEOUT) {
2521 /* TODO: get rid of this no-timeout thing */
2522 wait_for_completion_io(&wait);
2525 if (!wait_for_completion_io_timeout(&wait,
2526 msecs_to_jiffies(timeout_msecs))) {
2527 dev_warn(&h->pdev->dev, "Command timed out.\n");
2533 static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c,
2534 int reply_queue, unsigned long timeout_msecs)
2536 if (unlikely(lockup_detected(h))) {
2537 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
2540 return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs);
2543 static u32 lockup_detected(struct ctlr_info *h)
2546 u32 rc, *lockup_detected;
2549 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
2550 rc = *lockup_detected;
2555 #define MAX_DRIVER_CMD_RETRIES 25
2556 static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
2557 struct CommandList *c, int data_direction, unsigned long timeout_msecs)
2559 int backoff_time = 10, retry_count = 0;
2563 memset(c->err_info, 0, sizeof(*c->err_info));
2564 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
2569 if (retry_count > 3) {
2570 msleep(backoff_time);
2571 if (backoff_time < 1000)
2574 } while ((check_for_unit_attention(h, c) ||
2575 check_for_busy(h, c)) &&
2576 retry_count <= MAX_DRIVER_CMD_RETRIES);
2577 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
2578 if (retry_count > MAX_DRIVER_CMD_RETRIES)
2583 static void hpsa_print_cmd(struct ctlr_info *h, char *txt,
2584 struct CommandList *c)
2586 const u8 *cdb = c->Request.CDB;
2587 const u8 *lun = c->Header.LUN.LunAddrBytes;
2589 dev_warn(&h->pdev->dev, "%s: LUN:%02x%02x%02x%02x%02x%02x%02x%02x"
2590 " CDB:%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
2591 txt, lun[0], lun[1], lun[2], lun[3],
2592 lun[4], lun[5], lun[6], lun[7],
2593 cdb[0], cdb[1], cdb[2], cdb[3],
2594 cdb[4], cdb[5], cdb[6], cdb[7],
2595 cdb[8], cdb[9], cdb[10], cdb[11],
2596 cdb[12], cdb[13], cdb[14], cdb[15]);
2599 static void hpsa_scsi_interpret_error(struct ctlr_info *h,
2600 struct CommandList *cp)
2602 const struct ErrorInfo *ei = cp->err_info;
2603 struct device *d = &cp->h->pdev->dev;
2604 u8 sense_key, asc, ascq;
2607 switch (ei->CommandStatus) {
2608 case CMD_TARGET_STATUS:
2609 if (ei->SenseLen > sizeof(ei->SenseInfo))
2610 sense_len = sizeof(ei->SenseInfo);
2612 sense_len = ei->SenseLen;
2613 decode_sense_data(ei->SenseInfo, sense_len,
2614 &sense_key, &asc, &ascq);
2615 hpsa_print_cmd(h, "SCSI status", cp);
2616 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION)
2617 dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n",
2618 sense_key, asc, ascq);
2620 dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus);
2621 if (ei->ScsiStatus == 0)
2622 dev_warn(d, "SCSI status is abnormally zero. "
2623 "(probably indicates selection timeout "
2624 "reported incorrectly due to a known "
2625 "firmware bug, circa July, 2001.)\n");
2627 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2629 case CMD_DATA_OVERRUN:
2630 hpsa_print_cmd(h, "overrun condition", cp);
2633 /* controller unfortunately reports SCSI passthru's
2634 * to non-existent targets as invalid commands.
2636 hpsa_print_cmd(h, "invalid command", cp);
2637 dev_warn(d, "probably means device no longer present\n");
2640 case CMD_PROTOCOL_ERR:
2641 hpsa_print_cmd(h, "protocol error", cp);
2643 case CMD_HARDWARE_ERR:
2644 hpsa_print_cmd(h, "hardware error", cp);
2646 case CMD_CONNECTION_LOST:
2647 hpsa_print_cmd(h, "connection lost", cp);
2650 hpsa_print_cmd(h, "aborted", cp);
2652 case CMD_ABORT_FAILED:
2653 hpsa_print_cmd(h, "abort failed", cp);
2655 case CMD_UNSOLICITED_ABORT:
2656 hpsa_print_cmd(h, "unsolicited abort", cp);
2659 hpsa_print_cmd(h, "timed out", cp);
2661 case CMD_UNABORTABLE:
2662 hpsa_print_cmd(h, "unabortable", cp);
2664 case CMD_CTLR_LOCKUP:
2665 hpsa_print_cmd(h, "controller lockup detected", cp);
2668 hpsa_print_cmd(h, "unknown status", cp);
2669 dev_warn(d, "Unknown command status %x\n",
2674 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
2675 u16 page, unsigned char *buf,
2676 unsigned char bufsize)
2679 struct CommandList *c;
2680 struct ErrorInfo *ei;
2684 if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize,
2685 page, scsi3addr, TYPE_CMD)) {
2689 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
2690 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
2694 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
2695 hpsa_scsi_interpret_error(h, c);
2703 static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr,
2704 u8 reset_type, int reply_queue)
2707 struct CommandList *c;
2708 struct ErrorInfo *ei;
2713 /* fill_cmd can't fail here, no data buffer to map. */
2714 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
2715 scsi3addr, TYPE_MSG);
2716 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to LUN reset */
2717 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
2719 dev_warn(&h->pdev->dev, "Failed to send reset command\n");
2722 /* no unmap needed here because no data xfer. */
2725 if (ei->CommandStatus != 0) {
2726 hpsa_scsi_interpret_error(h, c);
2734 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
2735 struct hpsa_scsi_dev_t *dev,
2736 unsigned char *scsi3addr)
2740 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2741 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
2743 if (hpsa_is_cmd_idle(c))
2746 switch (c->cmd_type) {
2748 case CMD_IOCTL_PEND:
2749 match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes,
2750 sizeof(c->Header.LUN.LunAddrBytes));
2755 if (c->phys_disk == dev) {
2756 /* HBA mode match */
2759 /* Possible RAID mode -- check each phys dev. */
2760 /* FIXME: Do we need to take out a lock here? If
2761 * so, we could just call hpsa_get_pdisk_of_ioaccel2()
2763 for (i = 0; i < dev->nphysical_disks && !match; i++) {
2764 /* FIXME: an alternate test might be
2766 * match = dev->phys_disk[i]->ioaccel_handle
2767 * == c2->scsi_nexus; */
2768 match = dev->phys_disk[i] == c->phys_disk;
2774 for (i = 0; i < dev->nphysical_disks && !match; i++) {
2775 match = dev->phys_disk[i]->ioaccel_handle ==
2776 le32_to_cpu(ac->it_nexus);
2780 case 0: /* The command is in the middle of being initialized. */
2785 dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n",
2793 static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
2794 unsigned char *scsi3addr, u8 reset_type, int reply_queue)
2799 /* We can really only handle one reset at a time */
2800 if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) {
2801 dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n");
2805 BUG_ON(atomic_read(&dev->reset_cmds_out) != 0);
2807 for (i = 0; i < h->nr_cmds; i++) {
2808 struct CommandList *c = h->cmd_pool + i;
2809 int refcount = atomic_inc_return(&c->refcount);
2811 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, scsi3addr)) {
2812 unsigned long flags;
2815 * Mark the target command as having a reset pending,
2816 * then lock a lock so that the command cannot complete
2817 * while we're considering it. If the command is not
2818 * idle then count it; otherwise revoke the event.
2820 c->reset_pending = dev;
2821 spin_lock_irqsave(&h->lock, flags); /* Implied MB */
2822 if (!hpsa_is_cmd_idle(c))
2823 atomic_inc(&dev->reset_cmds_out);
2825 c->reset_pending = NULL;
2826 spin_unlock_irqrestore(&h->lock, flags);
2832 rc = hpsa_send_reset(h, scsi3addr, reset_type, reply_queue);
2834 wait_event(h->event_sync_wait_queue,
2835 atomic_read(&dev->reset_cmds_out) == 0 ||
2836 lockup_detected(h));
2838 if (unlikely(lockup_detected(h))) {
2839 dev_warn(&h->pdev->dev,
2840 "Controller lockup detected during reset wait\n");
2845 atomic_set(&dev->reset_cmds_out, 0);
2847 mutex_unlock(&h->reset_mutex);
2851 static void hpsa_get_raid_level(struct ctlr_info *h,
2852 unsigned char *scsi3addr, unsigned char *raid_level)
2857 *raid_level = RAID_UNKNOWN;
2858 buf = kzalloc(64, GFP_KERNEL);
2861 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0xC1, buf, 64);
2863 *raid_level = buf[8];
2864 if (*raid_level > RAID_UNKNOWN)
2865 *raid_level = RAID_UNKNOWN;
2870 #define HPSA_MAP_DEBUG
2871 #ifdef HPSA_MAP_DEBUG
2872 static void hpsa_debug_map_buff(struct ctlr_info *h, int rc,
2873 struct raid_map_data *map_buff)
2875 struct raid_map_disk_data *dd = &map_buff->data[0];
2877 u16 map_cnt, row_cnt, disks_per_row;
2882 /* Show details only if debugging has been activated. */
2883 if (h->raid_offload_debug < 2)
2886 dev_info(&h->pdev->dev, "structure_size = %u\n",
2887 le32_to_cpu(map_buff->structure_size));
2888 dev_info(&h->pdev->dev, "volume_blk_size = %u\n",
2889 le32_to_cpu(map_buff->volume_blk_size));
2890 dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n",
2891 le64_to_cpu(map_buff->volume_blk_cnt));
2892 dev_info(&h->pdev->dev, "physicalBlockShift = %u\n",
2893 map_buff->phys_blk_shift);
2894 dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n",
2895 map_buff->parity_rotation_shift);
2896 dev_info(&h->pdev->dev, "strip_size = %u\n",
2897 le16_to_cpu(map_buff->strip_size));
2898 dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n",
2899 le64_to_cpu(map_buff->disk_starting_blk));
2900 dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n",
2901 le64_to_cpu(map_buff->disk_blk_cnt));
2902 dev_info(&h->pdev->dev, "data_disks_per_row = %u\n",
2903 le16_to_cpu(map_buff->data_disks_per_row));
2904 dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n",
2905 le16_to_cpu(map_buff->metadata_disks_per_row));
2906 dev_info(&h->pdev->dev, "row_cnt = %u\n",
2907 le16_to_cpu(map_buff->row_cnt));
2908 dev_info(&h->pdev->dev, "layout_map_count = %u\n",
2909 le16_to_cpu(map_buff->layout_map_count));
2910 dev_info(&h->pdev->dev, "flags = 0x%x\n",
2911 le16_to_cpu(map_buff->flags));
2912 dev_info(&h->pdev->dev, "encrypytion = %s\n",
2913 le16_to_cpu(map_buff->flags) &
2914 RAID_MAP_FLAG_ENCRYPT_ON ? "ON" : "OFF");
2915 dev_info(&h->pdev->dev, "dekindex = %u\n",
2916 le16_to_cpu(map_buff->dekindex));
2917 map_cnt = le16_to_cpu(map_buff->layout_map_count);
2918 for (map = 0; map < map_cnt; map++) {
2919 dev_info(&h->pdev->dev, "Map%u:\n", map);
2920 row_cnt = le16_to_cpu(map_buff->row_cnt);
2921 for (row = 0; row < row_cnt; row++) {
2922 dev_info(&h->pdev->dev, " Row%u:\n", row);
2924 le16_to_cpu(map_buff->data_disks_per_row);
2925 for (col = 0; col < disks_per_row; col++, dd++)
2926 dev_info(&h->pdev->dev,
2927 " D%02u: h=0x%04x xor=%u,%u\n",
2928 col, dd->ioaccel_handle,
2929 dd->xor_mult[0], dd->xor_mult[1]);
2931 le16_to_cpu(map_buff->metadata_disks_per_row);
2932 for (col = 0; col < disks_per_row; col++, dd++)
2933 dev_info(&h->pdev->dev,
2934 " M%02u: h=0x%04x xor=%u,%u\n",
2935 col, dd->ioaccel_handle,
2936 dd->xor_mult[0], dd->xor_mult[1]);
2941 static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h,
2942 __attribute__((unused)) int rc,
2943 __attribute__((unused)) struct raid_map_data *map_buff)
2948 static int hpsa_get_raid_map(struct ctlr_info *h,
2949 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
2952 struct CommandList *c;
2953 struct ErrorInfo *ei;
2957 if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map,
2958 sizeof(this_device->raid_map), 0,
2959 scsi3addr, TYPE_CMD)) {
2960 dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n");
2964 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
2965 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
2969 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
2970 hpsa_scsi_interpret_error(h, c);
2976 /* @todo in the future, dynamically allocate RAID map memory */
2977 if (le32_to_cpu(this_device->raid_map.structure_size) >
2978 sizeof(this_device->raid_map)) {
2979 dev_warn(&h->pdev->dev, "RAID map size is too large!\n");
2982 hpsa_debug_map_buff(h, rc, &this_device->raid_map);
2989 static int hpsa_bmic_id_physical_device(struct ctlr_info *h,
2990 unsigned char scsi3addr[], u16 bmic_device_index,
2991 struct bmic_identify_physical_device *buf, size_t bufsize)
2994 struct CommandList *c;
2995 struct ErrorInfo *ei;
2998 rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize,
2999 0, RAID_CTLR_LUNID, TYPE_CMD);
3003 c->Request.CDB[2] = bmic_device_index & 0xff;
3004 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3006 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE,
3009 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3010 hpsa_scsi_interpret_error(h, c);
3018 static int hpsa_vpd_page_supported(struct ctlr_info *h,
3019 unsigned char scsi3addr[], u8 page)
3024 unsigned char *buf, bufsize;
3026 buf = kzalloc(256, GFP_KERNEL);
3030 /* Get the size of the page list first */
3031 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3032 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3033 buf, HPSA_VPD_HEADER_SZ);
3035 goto exit_unsupported;
3037 if ((pages + HPSA_VPD_HEADER_SZ) <= 255)
3038 bufsize = pages + HPSA_VPD_HEADER_SZ;
3042 /* Get the whole VPD page list */
3043 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3044 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3047 goto exit_unsupported;
3050 for (i = 1; i <= pages; i++)
3051 if (buf[3 + i] == page)
3052 goto exit_supported;
3061 static void hpsa_get_ioaccel_status(struct ctlr_info *h,
3062 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3068 this_device->offload_config = 0;
3069 this_device->offload_enabled = 0;
3070 this_device->offload_to_be_enabled = 0;
3072 buf = kzalloc(64, GFP_KERNEL);
3075 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS))
3077 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3078 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64);
3082 #define IOACCEL_STATUS_BYTE 4
3083 #define OFFLOAD_CONFIGURED_BIT 0x01
3084 #define OFFLOAD_ENABLED_BIT 0x02
3085 ioaccel_status = buf[IOACCEL_STATUS_BYTE];
3086 this_device->offload_config =
3087 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
3088 if (this_device->offload_config) {
3089 this_device->offload_enabled =
3090 !!(ioaccel_status & OFFLOAD_ENABLED_BIT);
3091 if (hpsa_get_raid_map(h, scsi3addr, this_device))
3092 this_device->offload_enabled = 0;
3094 this_device->offload_to_be_enabled = this_device->offload_enabled;
3100 /* Get the device id from inquiry page 0x83 */
3101 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
3102 unsigned char *device_id, int buflen)
3109 buf = kzalloc(64, GFP_KERNEL);
3112 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0x83, buf, 64);
3114 memcpy(device_id, &buf[8], buflen);
3119 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
3120 void *buf, int bufsize,
3121 int extended_response)
3124 struct CommandList *c;
3125 unsigned char scsi3addr[8];
3126 struct ErrorInfo *ei;
3130 /* address the controller */
3131 memset(scsi3addr, 0, sizeof(scsi3addr));
3132 if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
3133 buf, bufsize, 0, scsi3addr, TYPE_CMD)) {
3137 if (extended_response)
3138 c->Request.CDB[1] = extended_response;
3139 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3140 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
3144 if (ei->CommandStatus != 0 &&
3145 ei->CommandStatus != CMD_DATA_UNDERRUN) {
3146 hpsa_scsi_interpret_error(h, c);
3149 struct ReportLUNdata *rld = buf;
3151 if (rld->extended_response_flag != extended_response) {
3152 dev_err(&h->pdev->dev,
3153 "report luns requested format %u, got %u\n",
3155 rld->extended_response_flag);
3164 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
3165 struct ReportExtendedLUNdata *buf, int bufsize)
3167 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize,
3168 HPSA_REPORT_PHYS_EXTENDED);
3171 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
3172 struct ReportLUNdata *buf, int bufsize)
3174 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
3177 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
3178 int bus, int target, int lun)
3181 device->target = target;
3185 /* Use VPD inquiry to get details of volume status */
3186 static int hpsa_get_volume_status(struct ctlr_info *h,
3187 unsigned char scsi3addr[])
3194 buf = kzalloc(64, GFP_KERNEL);
3196 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3198 /* Does controller have VPD for logical volume status? */
3199 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS))
3202 /* Get the size of the VPD return buffer */
3203 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3204 buf, HPSA_VPD_HEADER_SZ);
3209 /* Now get the whole VPD buffer */
3210 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3211 buf, size + HPSA_VPD_HEADER_SZ);
3214 status = buf[4]; /* status byte */
3220 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3223 /* Determine offline status of a volume.
3226 * 0xff (offline for unknown reasons)
3227 * # (integer code indicating one of several NOT READY states
3228 * describing why a volume is to be kept offline)
3230 static int hpsa_volume_offline(struct ctlr_info *h,
3231 unsigned char scsi3addr[])
3233 struct CommandList *c;
3234 unsigned char *sense;
3235 u8 sense_key, asc, ascq;
3240 #define ASC_LUN_NOT_READY 0x04
3241 #define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04
3242 #define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02
3246 (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD);
3247 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
3252 sense = c->err_info->SenseInfo;
3253 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
3254 sense_len = sizeof(c->err_info->SenseInfo);
3256 sense_len = c->err_info->SenseLen;
3257 decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq);
3258 cmd_status = c->err_info->CommandStatus;
3259 scsi_status = c->err_info->ScsiStatus;
3261 /* Is the volume 'not ready'? */
3262 if (cmd_status != CMD_TARGET_STATUS ||
3263 scsi_status != SAM_STAT_CHECK_CONDITION ||
3264 sense_key != NOT_READY ||
3265 asc != ASC_LUN_NOT_READY) {
3269 /* Determine the reason for not ready state */
3270 ldstat = hpsa_get_volume_status(h, scsi3addr);
3272 /* Keep volume offline in certain cases: */
3274 case HPSA_LV_UNDERGOING_ERASE:
3275 case HPSA_LV_NOT_AVAILABLE:
3276 case HPSA_LV_UNDERGOING_RPI:
3277 case HPSA_LV_PENDING_RPI:
3278 case HPSA_LV_ENCRYPTED_NO_KEY:
3279 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
3280 case HPSA_LV_UNDERGOING_ENCRYPTION:
3281 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
3282 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
3284 case HPSA_VPD_LV_STATUS_UNSUPPORTED:
3285 /* If VPD status page isn't available,
3286 * use ASC/ASCQ to determine state
3288 if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) ||
3289 (ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ))
3299 * Find out if a logical device supports aborts by simply trying one.
3300 * Smart Array may claim not to support aborts on logical drives, but
3301 * if a MSA2000 * is connected, the drives on that will be presented
3302 * by the Smart Array as logical drives, and aborts may be sent to
3303 * those devices successfully. So the simplest way to find out is
3304 * to simply try an abort and see how the device responds.
3306 static int hpsa_device_supports_aborts(struct ctlr_info *h,
3307 unsigned char *scsi3addr)
3309 struct CommandList *c;
3310 struct ErrorInfo *ei;
3313 u64 tag = (u64) -1; /* bogus tag */
3315 /* Assume that physical devices support aborts */
3316 if (!is_logical_dev_addr_mode(scsi3addr))
3321 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &tag, 0, 0, scsi3addr, TYPE_MSG);
3322 (void) hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
3323 /* no unmap needed here because no data xfer. */
3325 switch (ei->CommandStatus) {
3329 case CMD_UNABORTABLE:
3330 case CMD_ABORT_FAILED:
3333 case CMD_TMF_STATUS:
3334 rc = hpsa_evaluate_tmf_status(h, c);
3344 static int hpsa_update_device_info(struct ctlr_info *h,
3345 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device,
3346 unsigned char *is_OBDR_device)
3349 #define OBDR_SIG_OFFSET 43
3350 #define OBDR_TAPE_SIG "$DR-10"
3351 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
3352 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
3354 unsigned char *inq_buff;
3355 unsigned char *obdr_sig;
3357 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
3361 /* Do an inquiry to the device to see what it is. */
3362 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
3363 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
3364 /* Inquiry failed (msg printed already) */
3365 dev_err(&h->pdev->dev,
3366 "hpsa_update_device_info: inquiry failed\n");
3370 this_device->devtype = (inq_buff[0] & 0x1f);
3371 memcpy(this_device->scsi3addr, scsi3addr, 8);
3372 memcpy(this_device->vendor, &inq_buff[8],
3373 sizeof(this_device->vendor));
3374 memcpy(this_device->model, &inq_buff[16],
3375 sizeof(this_device->model));
3376 memset(this_device->device_id, 0,
3377 sizeof(this_device->device_id));
3378 hpsa_get_device_id(h, scsi3addr, this_device->device_id,
3379 sizeof(this_device->device_id));
3381 if (this_device->devtype == TYPE_DISK &&
3382 is_logical_dev_addr_mode(scsi3addr)) {
3385 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
3386 if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC)
3387 hpsa_get_ioaccel_status(h, scsi3addr, this_device);
3388 volume_offline = hpsa_volume_offline(h, scsi3addr);
3389 if (volume_offline < 0 || volume_offline > 0xff)
3390 volume_offline = HPSA_VPD_LV_STATUS_UNSUPPORTED;
3391 this_device->volume_offline = volume_offline & 0xff;
3393 this_device->raid_level = RAID_UNKNOWN;
3394 this_device->offload_config = 0;
3395 this_device->offload_enabled = 0;
3396 this_device->offload_to_be_enabled = 0;
3397 this_device->hba_ioaccel_enabled = 0;
3398 this_device->volume_offline = 0;
3399 this_device->queue_depth = h->nr_cmds;
3402 if (is_OBDR_device) {
3403 /* See if this is a One-Button-Disaster-Recovery device
3404 * by looking for "$DR-10" at offset 43 in inquiry data.
3406 obdr_sig = &inq_buff[OBDR_SIG_OFFSET];
3407 *is_OBDR_device = (this_device->devtype == TYPE_ROM &&
3408 strncmp(obdr_sig, OBDR_TAPE_SIG,
3409 OBDR_SIG_LEN) == 0);
3419 static void hpsa_update_device_supports_aborts(struct ctlr_info *h,
3420 struct hpsa_scsi_dev_t *dev, u8 *scsi3addr)
3422 unsigned long flags;
3425 * See if this device supports aborts. If we already know
3426 * the device, we already know if it supports aborts, otherwise
3427 * we have to find out if it supports aborts by trying one.
3429 spin_lock_irqsave(&h->devlock, flags);
3430 rc = hpsa_scsi_find_entry(dev, h->dev, h->ndevices, &entry);
3431 if ((rc == DEVICE_SAME || rc == DEVICE_UPDATED) &&
3432 entry >= 0 && entry < h->ndevices) {
3433 dev->supports_aborts = h->dev[entry]->supports_aborts;
3434 spin_unlock_irqrestore(&h->devlock, flags);
3436 spin_unlock_irqrestore(&h->devlock, flags);
3437 dev->supports_aborts =
3438 hpsa_device_supports_aborts(h, scsi3addr);
3439 if (dev->supports_aborts < 0)
3440 dev->supports_aborts = 0;
3444 static unsigned char *ext_target_model[] = {
3454 static int is_ext_target(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
3458 for (i = 0; ext_target_model[i]; i++)
3459 if (strncmp(device->model, ext_target_model[i],
3460 strlen(ext_target_model[i])) == 0)
3465 /* Helper function to assign bus, target, lun mapping of devices.
3466 * Puts non-external target logical volumes on bus 0, external target logical
3467 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
3468 * Logical drive target and lun are assigned at this time, but
3469 * physical device lun and target assignment are deferred (assigned
3470 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
3472 static void figure_bus_target_lun(struct ctlr_info *h,
3473 u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device)
3475 u32 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
3477 if (!is_logical_dev_addr_mode(lunaddrbytes)) {
3478 /* physical device, target and lun filled in later */
3479 if (is_hba_lunid(lunaddrbytes))
3480 hpsa_set_bus_target_lun(device, 3, 0, lunid & 0x3fff);
3482 /* defer target, lun assignment for physical devices */
3483 hpsa_set_bus_target_lun(device, 2, -1, -1);
3486 /* It's a logical device */
3487 if (is_ext_target(h, device)) {
3488 /* external target way, put logicals on bus 1
3489 * and match target/lun numbers box
3490 * reports, other smart array, bus 0, target 0, match lunid
3492 hpsa_set_bus_target_lun(device,
3493 1, (lunid >> 16) & 0x3fff, lunid & 0x00ff);
3496 hpsa_set_bus_target_lun(device, 0, 0, lunid & 0x3fff);
3500 * If there is no lun 0 on a target, linux won't find any devices.
3501 * For the external targets (arrays), we have to manually detect the enclosure
3502 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
3503 * it for some reason. *tmpdevice is the target we're adding,
3504 * this_device is a pointer into the current element of currentsd[]
3505 * that we're building up in update_scsi_devices(), below.
3506 * lunzerobits is a bitmap that tracks which targets already have a
3508 * Returns 1 if an enclosure was added, 0 if not.
3510 static int add_ext_target_dev(struct ctlr_info *h,
3511 struct hpsa_scsi_dev_t *tmpdevice,
3512 struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes,
3513 unsigned long lunzerobits[], int *n_ext_target_devs)
3515 unsigned char scsi3addr[8];
3517 if (test_bit(tmpdevice->target, lunzerobits))
3518 return 0; /* There is already a lun 0 on this target. */
3520 if (!is_logical_dev_addr_mode(lunaddrbytes))
3521 return 0; /* It's the logical targets that may lack lun 0. */
3523 if (!is_ext_target(h, tmpdevice))
3524 return 0; /* Only external target devices have this problem. */
3526 if (tmpdevice->lun == 0) /* if lun is 0, then we have a lun 0. */
3529 memset(scsi3addr, 0, 8);
3530 scsi3addr[3] = tmpdevice->target;
3531 if (is_hba_lunid(scsi3addr))
3532 return 0; /* Don't add the RAID controller here. */
3534 if (is_scsi_rev_5(h))
3535 return 0; /* p1210m doesn't need to do this. */
3537 if (*n_ext_target_devs >= MAX_EXT_TARGETS) {
3538 dev_warn(&h->pdev->dev, "Maximum number of external "
3539 "target devices exceeded. Check your hardware "
3544 if (hpsa_update_device_info(h, scsi3addr, this_device, NULL))
3546 (*n_ext_target_devs)++;
3547 hpsa_set_bus_target_lun(this_device,
3548 tmpdevice->bus, tmpdevice->target, 0);
3549 hpsa_update_device_supports_aborts(h, this_device, scsi3addr);
3550 set_bit(tmpdevice->target, lunzerobits);
3555 * Get address of physical disk used for an ioaccel2 mode command:
3556 * 1. Extract ioaccel2 handle from the command.
3557 * 2. Find a matching ioaccel2 handle from list of physical disks.
3559 * 1 and set scsi3addr to address of matching physical
3560 * 0 if no matching physical disk was found.
3562 static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h,
3563 struct CommandList *ioaccel2_cmd_to_abort, unsigned char *scsi3addr)
3565 struct io_accel2_cmd *c2 =
3566 &h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex];
3567 unsigned long flags;
3570 spin_lock_irqsave(&h->devlock, flags);
3571 for (i = 0; i < h->ndevices; i++)
3572 if (h->dev[i]->ioaccel_handle == le32_to_cpu(c2->scsi_nexus)) {
3573 memcpy(scsi3addr, h->dev[i]->scsi3addr,
3574 sizeof(h->dev[i]->scsi3addr));
3575 spin_unlock_irqrestore(&h->devlock, flags);
3578 spin_unlock_irqrestore(&h->devlock, flags);
3583 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
3584 * logdev. The number of luns in physdev and logdev are returned in
3585 * *nphysicals and *nlogicals, respectively.
3586 * Returns 0 on success, -1 otherwise.
3588 static int hpsa_gather_lun_info(struct ctlr_info *h,
3589 struct ReportExtendedLUNdata *physdev, u32 *nphysicals,
3590 struct ReportLUNdata *logdev, u32 *nlogicals)
3592 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
3593 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
3596 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24;
3597 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
3598 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n",
3599 HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN);
3600 *nphysicals = HPSA_MAX_PHYS_LUN;
3602 if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) {
3603 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
3606 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
3607 /* Reject Logicals in excess of our max capability. */
3608 if (*nlogicals > HPSA_MAX_LUN) {
3609 dev_warn(&h->pdev->dev,
3610 "maximum logical LUNs (%d) exceeded. "
3611 "%d LUNs ignored.\n", HPSA_MAX_LUN,
3612 *nlogicals - HPSA_MAX_LUN);
3613 *nlogicals = HPSA_MAX_LUN;
3615 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
3616 dev_warn(&h->pdev->dev,
3617 "maximum logical + physical LUNs (%d) exceeded. "
3618 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
3619 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
3620 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
3625 static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position,
3626 int i, int nphysicals, int nlogicals,
3627 struct ReportExtendedLUNdata *physdev_list,
3628 struct ReportLUNdata *logdev_list)
3630 /* Helper function, figure out where the LUN ID info is coming from
3631 * given index i, lists of physical and logical devices, where in
3632 * the list the raid controller is supposed to appear (first or last)
3635 int logicals_start = nphysicals + (raid_ctlr_position == 0);
3636 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);
3638 if (i == raid_ctlr_position)
3639 return RAID_CTLR_LUNID;
3641 if (i < logicals_start)
3642 return &physdev_list->LUN[i -
3643 (raid_ctlr_position == 0)].lunid[0];
3645 if (i < last_device)
3646 return &logdev_list->LUN[i - nphysicals -
3647 (raid_ctlr_position == 0)][0];
3652 /* get physical drive ioaccel handle and queue depth */
3653 static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h,
3654 struct hpsa_scsi_dev_t *dev,
3656 struct bmic_identify_physical_device *id_phys)
3659 struct ext_report_lun_entry *rle =
3660 (struct ext_report_lun_entry *) lunaddrbytes;
3662 dev->ioaccel_handle = rle->ioaccel_handle;
3663 if (PHYS_IOACCEL(lunaddrbytes) && dev->ioaccel_handle)
3664 dev->hba_ioaccel_enabled = 1;
3665 memset(id_phys, 0, sizeof(*id_phys));
3666 rc = hpsa_bmic_id_physical_device(h, lunaddrbytes,
3667 GET_BMIC_DRIVE_NUMBER(lunaddrbytes), id_phys,
3670 /* Reserve space for FW operations */
3671 #define DRIVE_CMDS_RESERVED_FOR_FW 2
3672 #define DRIVE_QUEUE_DEPTH 7
3674 le16_to_cpu(id_phys->current_queue_depth_limit) -
3675 DRIVE_CMDS_RESERVED_FOR_FW;
3677 dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */
3680 static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device,
3682 struct bmic_identify_physical_device *id_phys)
3684 if (PHYS_IOACCEL(lunaddrbytes)
3685 && this_device->ioaccel_handle)
3686 this_device->hba_ioaccel_enabled = 1;
3688 memcpy(&this_device->active_path_index,
3689 &id_phys->active_path_number,
3690 sizeof(this_device->active_path_index));
3691 memcpy(&this_device->path_map,
3692 &id_phys->redundant_path_present_map,
3693 sizeof(this_device->path_map));
3694 memcpy(&this_device->box,
3695 &id_phys->alternate_paths_phys_box_on_port,
3696 sizeof(this_device->box));
3697 memcpy(&this_device->phys_connector,
3698 &id_phys->alternate_paths_phys_connector,
3699 sizeof(this_device->phys_connector));
3700 memcpy(&this_device->bay,
3701 &id_phys->phys_bay_in_box,
3702 sizeof(this_device->bay));
3705 static void hpsa_update_scsi_devices(struct ctlr_info *h)
3707 /* the idea here is we could get notified
3708 * that some devices have changed, so we do a report
3709 * physical luns and report logical luns cmd, and adjust
3710 * our list of devices accordingly.
3712 * The scsi3addr's of devices won't change so long as the
3713 * adapter is not reset. That means we can rescan and
3714 * tell which devices we already know about, vs. new
3715 * devices, vs. disappearing devices.
3717 struct ReportExtendedLUNdata *physdev_list = NULL;
3718 struct ReportLUNdata *logdev_list = NULL;
3719 struct bmic_identify_physical_device *id_phys = NULL;
3722 u32 ndev_allocated = 0;
3723 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
3725 int i, n_ext_target_devs, ndevs_to_allocate;
3726 int raid_ctlr_position;
3727 DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);
3729 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL);
3730 physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL);
3731 logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL);
3732 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
3733 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
3735 if (!currentsd || !physdev_list || !logdev_list ||
3736 !tmpdevice || !id_phys) {
3737 dev_err(&h->pdev->dev, "out of memory\n");
3740 memset(lunzerobits, 0, sizeof(lunzerobits));
3742 if (hpsa_gather_lun_info(h, physdev_list, &nphysicals,
3743 logdev_list, &nlogicals))
3746 /* We might see up to the maximum number of logical and physical disks
3747 * plus external target devices, and a device for the local RAID
3750 ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1;
3752 /* Allocate the per device structures */
3753 for (i = 0; i < ndevs_to_allocate; i++) {
3754 if (i >= HPSA_MAX_DEVICES) {
3755 dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded."
3756 " %d devices ignored.\n", HPSA_MAX_DEVICES,
3757 ndevs_to_allocate - HPSA_MAX_DEVICES);
3761 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
3762 if (!currentsd[i]) {
3763 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n",
3764 __FILE__, __LINE__);
3770 if (is_scsi_rev_5(h))
3771 raid_ctlr_position = 0;
3773 raid_ctlr_position = nphysicals + nlogicals;
3775 /* adjust our table of devices */
3776 n_ext_target_devs = 0;
3777 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
3778 u8 *lunaddrbytes, is_OBDR = 0;
3780 /* Figure out where the LUN ID info is coming from */
3781 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
3782 i, nphysicals, nlogicals, physdev_list, logdev_list);
3784 /* skip masked non-disk devices */
3785 if (MASKED_DEVICE(lunaddrbytes))
3786 if (i < nphysicals + (raid_ctlr_position == 0) &&
3787 NON_DISK_PHYS_DEV(lunaddrbytes))
3790 /* Get device type, vendor, model, device id */
3791 if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
3793 continue; /* skip it if we can't talk to it. */
3794 figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
3795 hpsa_update_device_supports_aborts(h, tmpdevice, lunaddrbytes);
3796 this_device = currentsd[ncurrent];
3799 * For external target devices, we have to insert a LUN 0 which
3800 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
3801 * is nonetheless an enclosure device there. We have to
3802 * present that otherwise linux won't find anything if
3803 * there is no lun 0.
3805 if (add_ext_target_dev(h, tmpdevice, this_device,
3806 lunaddrbytes, lunzerobits,
3807 &n_ext_target_devs)) {
3809 this_device = currentsd[ncurrent];
3812 *this_device = *tmpdevice;
3814 /* do not expose masked devices */
3815 if (MASKED_DEVICE(lunaddrbytes) &&
3816 i < nphysicals + (raid_ctlr_position == 0)) {
3817 this_device->expose_state = HPSA_DO_NOT_EXPOSE;
3819 this_device->expose_state =
3820 HPSA_SG_ATTACH | HPSA_ULD_ATTACH;
3823 switch (this_device->devtype) {
3825 /* We don't *really* support actual CD-ROM devices,
3826 * just "One Button Disaster Recovery" tape drive
3827 * which temporarily pretends to be a CD-ROM drive.
3828 * So we check that the device is really an OBDR tape
3829 * device by checking for "$DR-10" in bytes 43-48 of
3836 if (i < nphysicals + (raid_ctlr_position == 0)) {
3837 /* The disk is in HBA mode. */
3838 /* Never use RAID mapper in HBA mode. */
3839 this_device->offload_enabled = 0;
3840 hpsa_get_ioaccel_drive_info(h, this_device,
3841 lunaddrbytes, id_phys);
3842 hpsa_get_path_info(this_device, lunaddrbytes,
3848 case TYPE_MEDIUM_CHANGER:
3849 case TYPE_ENCLOSURE:
3853 /* Only present the Smartarray HBA as a RAID controller.
3854 * If it's a RAID controller other than the HBA itself
3855 * (an external RAID controller, MSA500 or similar)
3858 if (!is_hba_lunid(lunaddrbytes))
3865 if (ncurrent >= HPSA_MAX_DEVICES)
3868 adjust_hpsa_scsi_table(h, currentsd, ncurrent);
3871 for (i = 0; i < ndev_allocated; i++)
3872 kfree(currentsd[i]);
3874 kfree(physdev_list);
3879 static void hpsa_set_sg_descriptor(struct SGDescriptor *desc,
3880 struct scatterlist *sg)
3882 u64 addr64 = (u64) sg_dma_address(sg);
3883 unsigned int len = sg_dma_len(sg);
3885 desc->Addr = cpu_to_le64(addr64);
3886 desc->Len = cpu_to_le32(len);
3891 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
3892 * dma mapping and fills in the scatter gather entries of the
3895 static int hpsa_scatter_gather(struct ctlr_info *h,
3896 struct CommandList *cp,
3897 struct scsi_cmnd *cmd)
3899 struct scatterlist *sg;
3900 int use_sg, i, sg_limit, chained, last_sg;
3901 struct SGDescriptor *curr_sg;
3903 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
3905 use_sg = scsi_dma_map(cmd);
3910 goto sglist_finished;
3913 * If the number of entries is greater than the max for a single list,
3914 * then we have a chained list; we will set up all but one entry in the
3915 * first list (the last entry is saved for link information);
3916 * otherwise, we don't have a chained list and we'll set up at each of
3917 * the entries in the one list.
3920 chained = use_sg > h->max_cmd_sg_entries;
3921 sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg;
3922 last_sg = scsi_sg_count(cmd) - 1;
3923 scsi_for_each_sg(cmd, sg, sg_limit, i) {
3924 hpsa_set_sg_descriptor(curr_sg, sg);
3930 * Continue with the chained list. Set curr_sg to the chained
3931 * list. Modify the limit to the total count less the entries
3932 * we've already set up. Resume the scan at the list entry
3933 * where the previous loop left off.
3935 curr_sg = h->cmd_sg_list[cp->cmdindex];
3936 sg_limit = use_sg - sg_limit;
3937 for_each_sg(sg, sg, sg_limit, i) {
3938 hpsa_set_sg_descriptor(curr_sg, sg);
3943 /* Back the pointer up to the last entry and mark it as "last". */
3944 (curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST);
3946 if (use_sg + chained > h->maxSG)
3947 h->maxSG = use_sg + chained;
3950 cp->Header.SGList = h->max_cmd_sg_entries;
3951 cp->Header.SGTotal = cpu_to_le16(use_sg + 1);
3952 if (hpsa_map_sg_chain_block(h, cp)) {
3953 scsi_dma_unmap(cmd);
3961 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */
3962 cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */
3966 #define IO_ACCEL_INELIGIBLE (1)
3967 static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len)
3973 /* Perform some CDB fixups if needed using 10 byte reads/writes only */
3980 if (*cdb_len == 6) {
3981 block = (((u32) cdb[2]) << 8) | cdb[3];
3984 BUG_ON(*cdb_len != 12);
3985 block = (((u32) cdb[2]) << 24) |
3986 (((u32) cdb[3]) << 16) |
3987 (((u32) cdb[4]) << 8) |
3990 (((u32) cdb[6]) << 24) |
3991 (((u32) cdb[7]) << 16) |
3992 (((u32) cdb[8]) << 8) |
3995 if (block_cnt > 0xffff)
3996 return IO_ACCEL_INELIGIBLE;
3998 cdb[0] = is_write ? WRITE_10 : READ_10;
4000 cdb[2] = (u8) (block >> 24);
4001 cdb[3] = (u8) (block >> 16);
4002 cdb[4] = (u8) (block >> 8);
4003 cdb[5] = (u8) (block);
4005 cdb[7] = (u8) (block_cnt >> 8);
4006 cdb[8] = (u8) (block_cnt);
4014 static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h,
4015 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4016 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4018 struct scsi_cmnd *cmd = c->scsi_cmd;
4019 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
4021 unsigned int total_len = 0;
4022 struct scatterlist *sg;
4025 struct SGDescriptor *curr_sg;
4026 u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE;
4028 /* TODO: implement chaining support */
4029 if (scsi_sg_count(cmd) > h->ioaccel_maxsg) {
4030 atomic_dec(&phys_disk->ioaccel_cmds_out);
4031 return IO_ACCEL_INELIGIBLE;
4034 BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX);
4036 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4037 atomic_dec(&phys_disk->ioaccel_cmds_out);
4038 return IO_ACCEL_INELIGIBLE;
4041 c->cmd_type = CMD_IOACCEL1;
4043 /* Adjust the DMA address to point to the accelerated command buffer */
4044 c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle +
4045 (c->cmdindex * sizeof(*cp));
4046 BUG_ON(c->busaddr & 0x0000007F);
4048 use_sg = scsi_dma_map(cmd);
4050 atomic_dec(&phys_disk->ioaccel_cmds_out);
4056 scsi_for_each_sg(cmd, sg, use_sg, i) {
4057 addr64 = (u64) sg_dma_address(sg);
4058 len = sg_dma_len(sg);
4060 curr_sg->Addr = cpu_to_le64(addr64);
4061 curr_sg->Len = cpu_to_le32(len);
4062 curr_sg->Ext = cpu_to_le32(0);
4065 (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST);
4067 switch (cmd->sc_data_direction) {
4069 control |= IOACCEL1_CONTROL_DATA_OUT;
4071 case DMA_FROM_DEVICE:
4072 control |= IOACCEL1_CONTROL_DATA_IN;
4075 control |= IOACCEL1_CONTROL_NODATAXFER;
4078 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4079 cmd->sc_data_direction);
4084 control |= IOACCEL1_CONTROL_NODATAXFER;
4087 c->Header.SGList = use_sg;
4088 /* Fill out the command structure to submit */
4089 cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF);
4090 cp->transfer_len = cpu_to_le32(total_len);
4091 cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ |
4092 (cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK));
4093 cp->control = cpu_to_le32(control);
4094 memcpy(cp->CDB, cdb, cdb_len);
4095 memcpy(cp->CISS_LUN, scsi3addr, 8);
4096 /* Tag was already set at init time. */
4097 enqueue_cmd_and_start_io(h, c);
4102 * Queue a command directly to a device behind the controller using the
4103 * I/O accelerator path.
4105 static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h,
4106 struct CommandList *c)
4108 struct scsi_cmnd *cmd = c->scsi_cmd;
4109 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4113 return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle,
4114 cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev);
4118 * Set encryption parameters for the ioaccel2 request
4120 static void set_encrypt_ioaccel2(struct ctlr_info *h,
4121 struct CommandList *c, struct io_accel2_cmd *cp)
4123 struct scsi_cmnd *cmd = c->scsi_cmd;
4124 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4125 struct raid_map_data *map = &dev->raid_map;
4128 /* Are we doing encryption on this device */
4129 if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON))
4131 /* Set the data encryption key index. */
4132 cp->dekindex = map->dekindex;
4134 /* Set the encryption enable flag, encoded into direction field. */
4135 cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK;
4137 /* Set encryption tweak values based on logical block address
4138 * If block size is 512, tweak value is LBA.
4139 * For other block sizes, tweak is (LBA * block size)/ 512)
4141 switch (cmd->cmnd[0]) {
4142 /* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */
4145 first_block = get_unaligned_be16(&cmd->cmnd[2]);
4149 /* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */
4152 first_block = get_unaligned_be32(&cmd->cmnd[2]);
4156 first_block = get_unaligned_be64(&cmd->cmnd[2]);
4159 dev_err(&h->pdev->dev,
4160 "ERROR: %s: size (0x%x) not supported for encryption\n",
4161 __func__, cmd->cmnd[0]);
4166 if (le32_to_cpu(map->volume_blk_size) != 512)
4167 first_block = first_block *
4168 le32_to_cpu(map->volume_blk_size)/512;
4170 cp->tweak_lower = cpu_to_le32(first_block);
4171 cp->tweak_upper = cpu_to_le32(first_block >> 32);
4174 static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h,
4175 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4176 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4178 struct scsi_cmnd *cmd = c->scsi_cmd;
4179 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
4180 struct ioaccel2_sg_element *curr_sg;
4182 struct scatterlist *sg;
4187 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4189 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4190 atomic_dec(&phys_disk->ioaccel_cmds_out);
4191 return IO_ACCEL_INELIGIBLE;
4194 c->cmd_type = CMD_IOACCEL2;
4195 /* Adjust the DMA address to point to the accelerated command buffer */
4196 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
4197 (c->cmdindex * sizeof(*cp));
4198 BUG_ON(c->busaddr & 0x0000007F);
4200 memset(cp, 0, sizeof(*cp));
4201 cp->IU_type = IOACCEL2_IU_TYPE;
4203 use_sg = scsi_dma_map(cmd);
4205 atomic_dec(&phys_disk->ioaccel_cmds_out);
4211 if (use_sg > h->ioaccel_maxsg) {
4212 addr64 = le64_to_cpu(
4213 h->ioaccel2_cmd_sg_list[c->cmdindex]->address);
4214 curr_sg->address = cpu_to_le64(addr64);
4215 curr_sg->length = 0;
4216 curr_sg->reserved[0] = 0;
4217 curr_sg->reserved[1] = 0;
4218 curr_sg->reserved[2] = 0;
4219 curr_sg->chain_indicator = 0x80;
4221 curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex];
4223 scsi_for_each_sg(cmd, sg, use_sg, i) {
4224 addr64 = (u64) sg_dma_address(sg);
4225 len = sg_dma_len(sg);
4227 curr_sg->address = cpu_to_le64(addr64);
4228 curr_sg->length = cpu_to_le32(len);
4229 curr_sg->reserved[0] = 0;
4230 curr_sg->reserved[1] = 0;
4231 curr_sg->reserved[2] = 0;
4232 curr_sg->chain_indicator = 0;
4236 switch (cmd->sc_data_direction) {
4238 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4239 cp->direction |= IOACCEL2_DIR_DATA_OUT;
4241 case DMA_FROM_DEVICE:
4242 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4243 cp->direction |= IOACCEL2_DIR_DATA_IN;
4246 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4247 cp->direction |= IOACCEL2_DIR_NO_DATA;
4250 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4251 cmd->sc_data_direction);
4256 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4257 cp->direction |= IOACCEL2_DIR_NO_DATA;
4260 /* Set encryption parameters, if necessary */
4261 set_encrypt_ioaccel2(h, c, cp);
4263 cp->scsi_nexus = cpu_to_le32(ioaccel_handle);
4264 cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT);
4265 memcpy(cp->cdb, cdb, sizeof(cp->cdb));
4267 cp->data_len = cpu_to_le32(total_len);
4268 cp->err_ptr = cpu_to_le64(c->busaddr +
4269 offsetof(struct io_accel2_cmd, error_data));
4270 cp->err_len = cpu_to_le32(sizeof(cp->error_data));
4272 /* fill in sg elements */
4273 if (use_sg > h->ioaccel_maxsg) {
4275 if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) {
4276 atomic_dec(&phys_disk->ioaccel_cmds_out);
4277 scsi_dma_unmap(cmd);
4281 cp->sg_count = (u8) use_sg;
4283 enqueue_cmd_and_start_io(h, c);
4288 * Queue a command to the correct I/O accelerator path.
4290 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
4291 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4292 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4294 /* Try to honor the device's queue depth */
4295 if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) >
4296 phys_disk->queue_depth) {
4297 atomic_dec(&phys_disk->ioaccel_cmds_out);
4298 return IO_ACCEL_INELIGIBLE;
4300 if (h->transMethod & CFGTBL_Trans_io_accel1)
4301 return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle,
4302 cdb, cdb_len, scsi3addr,
4305 return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle,
4306 cdb, cdb_len, scsi3addr,
4310 static void raid_map_helper(struct raid_map_data *map,
4311 int offload_to_mirror, u32 *map_index, u32 *current_group)
4313 if (offload_to_mirror == 0) {
4314 /* use physical disk in the first mirrored group. */
4315 *map_index %= le16_to_cpu(map->data_disks_per_row);
4319 /* determine mirror group that *map_index indicates */
4320 *current_group = *map_index /
4321 le16_to_cpu(map->data_disks_per_row);
4322 if (offload_to_mirror == *current_group)
4324 if (*current_group < le16_to_cpu(map->layout_map_count) - 1) {
4325 /* select map index from next group */
4326 *map_index += le16_to_cpu(map->data_disks_per_row);
4329 /* select map index from first group */
4330 *map_index %= le16_to_cpu(map->data_disks_per_row);
4333 } while (offload_to_mirror != *current_group);
4337 * Attempt to perform offload RAID mapping for a logical volume I/O.
4339 static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
4340 struct CommandList *c)
4342 struct scsi_cmnd *cmd = c->scsi_cmd;
4343 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4344 struct raid_map_data *map = &dev->raid_map;
4345 struct raid_map_disk_data *dd = &map->data[0];
4348 u64 first_block, last_block;
4351 u64 first_row, last_row;
4352 u32 first_row_offset, last_row_offset;
4353 u32 first_column, last_column;
4354 u64 r0_first_row, r0_last_row;
4355 u32 r5or6_blocks_per_row;
4356 u64 r5or6_first_row, r5or6_last_row;
4357 u32 r5or6_first_row_offset, r5or6_last_row_offset;
4358 u32 r5or6_first_column, r5or6_last_column;
4359 u32 total_disks_per_row;
4361 u32 first_group, last_group, current_group;
4369 #if BITS_PER_LONG == 32
4372 int offload_to_mirror;
4374 /* check for valid opcode, get LBA and block count */
4375 switch (cmd->cmnd[0]) {
4380 (((u64) cmd->cmnd[2]) << 8) |
4382 block_cnt = cmd->cmnd[4];
4390 (((u64) cmd->cmnd[2]) << 24) |
4391 (((u64) cmd->cmnd[3]) << 16) |
4392 (((u64) cmd->cmnd[4]) << 8) |
4395 (((u32) cmd->cmnd[7]) << 8) |
4402 (((u64) cmd->cmnd[2]) << 24) |
4403 (((u64) cmd->cmnd[3]) << 16) |
4404 (((u64) cmd->cmnd[4]) << 8) |
4407 (((u32) cmd->cmnd[6]) << 24) |
4408 (((u32) cmd->cmnd[7]) << 16) |
4409 (((u32) cmd->cmnd[8]) << 8) |
4416 (((u64) cmd->cmnd[2]) << 56) |
4417 (((u64) cmd->cmnd[3]) << 48) |
4418 (((u64) cmd->cmnd[4]) << 40) |
4419 (((u64) cmd->cmnd[5]) << 32) |
4420 (((u64) cmd->cmnd[6]) << 24) |
4421 (((u64) cmd->cmnd[7]) << 16) |
4422 (((u64) cmd->cmnd[8]) << 8) |
4425 (((u32) cmd->cmnd[10]) << 24) |
4426 (((u32) cmd->cmnd[11]) << 16) |
4427 (((u32) cmd->cmnd[12]) << 8) |
4431 return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */
4433 last_block = first_block + block_cnt - 1;
4435 /* check for write to non-RAID-0 */
4436 if (is_write && dev->raid_level != 0)
4437 return IO_ACCEL_INELIGIBLE;
4439 /* check for invalid block or wraparound */
4440 if (last_block >= le64_to_cpu(map->volume_blk_cnt) ||
4441 last_block < first_block)
4442 return IO_ACCEL_INELIGIBLE;
4444 /* calculate stripe information for the request */
4445 blocks_per_row = le16_to_cpu(map->data_disks_per_row) *
4446 le16_to_cpu(map->strip_size);
4447 strip_size = le16_to_cpu(map->strip_size);
4448 #if BITS_PER_LONG == 32
4449 tmpdiv = first_block;
4450 (void) do_div(tmpdiv, blocks_per_row);
4452 tmpdiv = last_block;
4453 (void) do_div(tmpdiv, blocks_per_row);
4455 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
4456 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
4457 tmpdiv = first_row_offset;
4458 (void) do_div(tmpdiv, strip_size);
4459 first_column = tmpdiv;
4460 tmpdiv = last_row_offset;
4461 (void) do_div(tmpdiv, strip_size);
4462 last_column = tmpdiv;
4464 first_row = first_block / blocks_per_row;
4465 last_row = last_block / blocks_per_row;
4466 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
4467 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
4468 first_column = first_row_offset / strip_size;
4469 last_column = last_row_offset / strip_size;
4472 /* if this isn't a single row/column then give to the controller */
4473 if ((first_row != last_row) || (first_column != last_column))
4474 return IO_ACCEL_INELIGIBLE;
4476 /* proceeding with driver mapping */
4477 total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
4478 le16_to_cpu(map->metadata_disks_per_row);
4479 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
4480 le16_to_cpu(map->row_cnt);
4481 map_index = (map_row * total_disks_per_row) + first_column;
4483 switch (dev->raid_level) {
4485 break; /* nothing special to do */
4487 /* Handles load balance across RAID 1 members.
4488 * (2-drive R1 and R10 with even # of drives.)
4489 * Appropriate for SSDs, not optimal for HDDs
4491 BUG_ON(le16_to_cpu(map->layout_map_count) != 2);
4492 if (dev->offload_to_mirror)
4493 map_index += le16_to_cpu(map->data_disks_per_row);
4494 dev->offload_to_mirror = !dev->offload_to_mirror;
4497 /* Handles N-way mirrors (R1-ADM)
4498 * and R10 with # of drives divisible by 3.)
4500 BUG_ON(le16_to_cpu(map->layout_map_count) != 3);
4502 offload_to_mirror = dev->offload_to_mirror;
4503 raid_map_helper(map, offload_to_mirror,
4504 &map_index, ¤t_group);
4505 /* set mirror group to use next time */
4507 (offload_to_mirror >=
4508 le16_to_cpu(map->layout_map_count) - 1)
4509 ? 0 : offload_to_mirror + 1;
4510 dev->offload_to_mirror = offload_to_mirror;
4511 /* Avoid direct use of dev->offload_to_mirror within this
4512 * function since multiple threads might simultaneously
4513 * increment it beyond the range of dev->layout_map_count -1.
4518 if (le16_to_cpu(map->layout_map_count) <= 1)
4521 /* Verify first and last block are in same RAID group */
4522 r5or6_blocks_per_row =
4523 le16_to_cpu(map->strip_size) *
4524 le16_to_cpu(map->data_disks_per_row);
4525 BUG_ON(r5or6_blocks_per_row == 0);
4526 stripesize = r5or6_blocks_per_row *
4527 le16_to_cpu(map->layout_map_count);
4528 #if BITS_PER_LONG == 32
4529 tmpdiv = first_block;
4530 first_group = do_div(tmpdiv, stripesize);
4531 tmpdiv = first_group;
4532 (void) do_div(tmpdiv, r5or6_blocks_per_row);
4533 first_group = tmpdiv;
4534 tmpdiv = last_block;
4535 last_group = do_div(tmpdiv, stripesize);
4536 tmpdiv = last_group;
4537 (void) do_div(tmpdiv, r5or6_blocks_per_row);
4538 last_group = tmpdiv;
4540 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
4541 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
4543 if (first_group != last_group)
4544 return IO_ACCEL_INELIGIBLE;
4546 /* Verify request is in a single row of RAID 5/6 */
4547 #if BITS_PER_LONG == 32
4548 tmpdiv = first_block;
4549 (void) do_div(tmpdiv, stripesize);
4550 first_row = r5or6_first_row = r0_first_row = tmpdiv;
4551 tmpdiv = last_block;
4552 (void) do_div(tmpdiv, stripesize);
4553 r5or6_last_row = r0_last_row = tmpdiv;
4555 first_row = r5or6_first_row = r0_first_row =
4556 first_block / stripesize;
4557 r5or6_last_row = r0_last_row = last_block / stripesize;
4559 if (r5or6_first_row != r5or6_last_row)
4560 return IO_ACCEL_INELIGIBLE;
4563 /* Verify request is in a single column */
4564 #if BITS_PER_LONG == 32
4565 tmpdiv = first_block;
4566 first_row_offset = do_div(tmpdiv, stripesize);
4567 tmpdiv = first_row_offset;
4568 first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row);
4569 r5or6_first_row_offset = first_row_offset;
4570 tmpdiv = last_block;
4571 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
4572 tmpdiv = r5or6_last_row_offset;
4573 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
4574 tmpdiv = r5or6_first_row_offset;
4575 (void) do_div(tmpdiv, map->strip_size);
4576 first_column = r5or6_first_column = tmpdiv;
4577 tmpdiv = r5or6_last_row_offset;
4578 (void) do_div(tmpdiv, map->strip_size);
4579 r5or6_last_column = tmpdiv;
4581 first_row_offset = r5or6_first_row_offset =
4582 (u32)((first_block % stripesize) %
4583 r5or6_blocks_per_row);
4585 r5or6_last_row_offset =
4586 (u32)((last_block % stripesize) %
4587 r5or6_blocks_per_row);
4589 first_column = r5or6_first_column =
4590 r5or6_first_row_offset / le16_to_cpu(map->strip_size);
4592 r5or6_last_row_offset / le16_to_cpu(map->strip_size);
4594 if (r5or6_first_column != r5or6_last_column)
4595 return IO_ACCEL_INELIGIBLE;
4597 /* Request is eligible */
4598 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
4599 le16_to_cpu(map->row_cnt);
4601 map_index = (first_group *
4602 (le16_to_cpu(map->row_cnt) * total_disks_per_row)) +
4603 (map_row * total_disks_per_row) + first_column;
4606 return IO_ACCEL_INELIGIBLE;
4609 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
4610 return IO_ACCEL_INELIGIBLE;
4612 c->phys_disk = dev->phys_disk[map_index];
4614 disk_handle = dd[map_index].ioaccel_handle;
4615 disk_block = le64_to_cpu(map->disk_starting_blk) +
4616 first_row * le16_to_cpu(map->strip_size) +
4617 (first_row_offset - first_column *
4618 le16_to_cpu(map->strip_size));
4619 disk_block_cnt = block_cnt;
4621 /* handle differing logical/physical block sizes */
4622 if (map->phys_blk_shift) {
4623 disk_block <<= map->phys_blk_shift;
4624 disk_block_cnt <<= map->phys_blk_shift;
4626 BUG_ON(disk_block_cnt > 0xffff);
4628 /* build the new CDB for the physical disk I/O */
4629 if (disk_block > 0xffffffff) {
4630 cdb[0] = is_write ? WRITE_16 : READ_16;
4632 cdb[2] = (u8) (disk_block >> 56);
4633 cdb[3] = (u8) (disk_block >> 48);
4634 cdb[4] = (u8) (disk_block >> 40);
4635 cdb[5] = (u8) (disk_block >> 32);
4636 cdb[6] = (u8) (disk_block >> 24);
4637 cdb[7] = (u8) (disk_block >> 16);
4638 cdb[8] = (u8) (disk_block >> 8);
4639 cdb[9] = (u8) (disk_block);
4640 cdb[10] = (u8) (disk_block_cnt >> 24);
4641 cdb[11] = (u8) (disk_block_cnt >> 16);
4642 cdb[12] = (u8) (disk_block_cnt >> 8);
4643 cdb[13] = (u8) (disk_block_cnt);
4648 cdb[0] = is_write ? WRITE_10 : READ_10;
4650 cdb[2] = (u8) (disk_block >> 24);
4651 cdb[3] = (u8) (disk_block >> 16);
4652 cdb[4] = (u8) (disk_block >> 8);
4653 cdb[5] = (u8) (disk_block);
4655 cdb[7] = (u8) (disk_block_cnt >> 8);
4656 cdb[8] = (u8) (disk_block_cnt);
4660 return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len,
4662 dev->phys_disk[map_index]);
4666 * Submit commands down the "normal" RAID stack path
4667 * All callers to hpsa_ciss_submit must check lockup_detected
4668 * beforehand, before (opt.) and after calling cmd_alloc
4670 static int hpsa_ciss_submit(struct ctlr_info *h,
4671 struct CommandList *c, struct scsi_cmnd *cmd,
4672 unsigned char scsi3addr[])
4674 cmd->host_scribble = (unsigned char *) c;
4675 c->cmd_type = CMD_SCSI;
4677 c->Header.ReplyQueue = 0; /* unused in simple mode */
4678 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
4679 c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT));
4681 /* Fill in the request block... */
4683 c->Request.Timeout = 0;
4684 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
4685 c->Request.CDBLen = cmd->cmd_len;
4686 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
4687 switch (cmd->sc_data_direction) {
4689 c->Request.type_attr_dir =
4690 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE);
4692 case DMA_FROM_DEVICE:
4693 c->Request.type_attr_dir =
4694 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ);
4697 c->Request.type_attr_dir =
4698 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE);
4700 case DMA_BIDIRECTIONAL:
4701 /* This can happen if a buggy application does a scsi passthru
4702 * and sets both inlen and outlen to non-zero. ( see
4703 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
4706 c->Request.type_attr_dir =
4707 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD);
4708 /* This is technically wrong, and hpsa controllers should
4709 * reject it with CMD_INVALID, which is the most correct
4710 * response, but non-fibre backends appear to let it
4711 * slide by, and give the same results as if this field
4712 * were set correctly. Either way is acceptable for
4713 * our purposes here.
4719 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4720 cmd->sc_data_direction);
4725 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
4726 hpsa_cmd_resolve_and_free(h, c);
4727 return SCSI_MLQUEUE_HOST_BUSY;
4729 enqueue_cmd_and_start_io(h, c);
4730 /* the cmd'll come back via intr handler in complete_scsi_command() */
4734 static void hpsa_cmd_init(struct ctlr_info *h, int index,
4735 struct CommandList *c)
4737 dma_addr_t cmd_dma_handle, err_dma_handle;
4739 /* Zero out all of commandlist except the last field, refcount */
4740 memset(c, 0, offsetof(struct CommandList, refcount));
4741 c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT));
4742 cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
4743 c->err_info = h->errinfo_pool + index;
4744 memset(c->err_info, 0, sizeof(*c->err_info));
4745 err_dma_handle = h->errinfo_pool_dhandle
4746 + index * sizeof(*c->err_info);
4747 c->cmdindex = index;
4748 c->busaddr = (u32) cmd_dma_handle;
4749 c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle);
4750 c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info));
4752 c->scsi_cmd = SCSI_CMD_IDLE;
4755 static void hpsa_preinitialize_commands(struct ctlr_info *h)
4759 for (i = 0; i < h->nr_cmds; i++) {
4760 struct CommandList *c = h->cmd_pool + i;
4762 hpsa_cmd_init(h, i, c);
4763 atomic_set(&c->refcount, 0);
4767 static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index,
4768 struct CommandList *c)
4770 dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
4772 BUG_ON(c->cmdindex != index);
4774 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
4775 memset(c->err_info, 0, sizeof(*c->err_info));
4776 c->busaddr = (u32) cmd_dma_handle;
4779 static int hpsa_ioaccel_submit(struct ctlr_info *h,
4780 struct CommandList *c, struct scsi_cmnd *cmd,
4781 unsigned char *scsi3addr)
4783 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4784 int rc = IO_ACCEL_INELIGIBLE;
4786 cmd->host_scribble = (unsigned char *) c;
4788 if (dev->offload_enabled) {
4789 hpsa_cmd_init(h, c->cmdindex, c);
4790 c->cmd_type = CMD_SCSI;
4792 rc = hpsa_scsi_ioaccel_raid_map(h, c);
4793 if (rc < 0) /* scsi_dma_map failed. */
4794 rc = SCSI_MLQUEUE_HOST_BUSY;
4795 } else if (dev->hba_ioaccel_enabled) {
4796 hpsa_cmd_init(h, c->cmdindex, c);
4797 c->cmd_type = CMD_SCSI;
4799 rc = hpsa_scsi_ioaccel_direct_map(h, c);
4800 if (rc < 0) /* scsi_dma_map failed. */
4801 rc = SCSI_MLQUEUE_HOST_BUSY;
4806 static void hpsa_command_resubmit_worker(struct work_struct *work)
4808 struct scsi_cmnd *cmd;
4809 struct hpsa_scsi_dev_t *dev;
4810 struct CommandList *c = container_of(work, struct CommandList, work);
4813 dev = cmd->device->hostdata;
4815 cmd->result = DID_NO_CONNECT << 16;
4816 return hpsa_cmd_free_and_done(c->h, c, cmd);
4818 if (c->reset_pending)
4819 return hpsa_cmd_resolve_and_free(c->h, c);
4820 if (c->abort_pending)
4821 return hpsa_cmd_abort_and_free(c->h, c, cmd);
4822 if (c->cmd_type == CMD_IOACCEL2) {
4823 struct ctlr_info *h = c->h;
4824 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
4827 if (c2->error_data.serv_response ==
4828 IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) {
4829 rc = hpsa_ioaccel_submit(h, c, cmd, dev->scsi3addr);
4832 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
4834 * If we get here, it means dma mapping failed.
4835 * Try again via scsi mid layer, which will
4836 * then get SCSI_MLQUEUE_HOST_BUSY.
4838 cmd->result = DID_IMM_RETRY << 16;
4839 return hpsa_cmd_free_and_done(h, c, cmd);
4841 /* else, fall thru and resubmit down CISS path */
4844 hpsa_cmd_partial_init(c->h, c->cmdindex, c);
4845 if (hpsa_ciss_submit(c->h, c, cmd, dev->scsi3addr)) {
4847 * If we get here, it means dma mapping failed. Try
4848 * again via scsi mid layer, which will then get
4849 * SCSI_MLQUEUE_HOST_BUSY.
4851 * hpsa_ciss_submit will have already freed c
4852 * if it encountered a dma mapping failure.
4854 cmd->result = DID_IMM_RETRY << 16;
4855 cmd->scsi_done(cmd);
4859 /* Running in struct Scsi_Host->host_lock less mode */
4860 static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
4862 struct ctlr_info *h;
4863 struct hpsa_scsi_dev_t *dev;
4864 unsigned char scsi3addr[8];
4865 struct CommandList *c;
4868 /* Get the ptr to our adapter structure out of cmd->host. */
4869 h = sdev_to_hba(cmd->device);
4871 BUG_ON(cmd->request->tag < 0);
4873 dev = cmd->device->hostdata;
4875 cmd->result = DID_NO_CONNECT << 16;
4876 cmd->scsi_done(cmd);
4880 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
4882 if (unlikely(lockup_detected(h))) {
4883 cmd->result = DID_NO_CONNECT << 16;
4884 cmd->scsi_done(cmd);
4887 c = cmd_tagged_alloc(h, cmd);
4890 * Call alternate submit routine for I/O accelerated commands.
4891 * Retries always go down the normal I/O path.
4893 if (likely(cmd->retries == 0 &&
4894 cmd->request->cmd_type == REQ_TYPE_FS &&
4895 h->acciopath_status)) {
4896 rc = hpsa_ioaccel_submit(h, c, cmd, scsi3addr);
4899 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
4900 hpsa_cmd_resolve_and_free(h, c);
4901 return SCSI_MLQUEUE_HOST_BUSY;
4904 return hpsa_ciss_submit(h, c, cmd, scsi3addr);
4907 static void hpsa_scan_complete(struct ctlr_info *h)
4909 unsigned long flags;
4911 spin_lock_irqsave(&h->scan_lock, flags);
4912 h->scan_finished = 1;
4913 wake_up_all(&h->scan_wait_queue);
4914 spin_unlock_irqrestore(&h->scan_lock, flags);
4917 static void hpsa_scan_start(struct Scsi_Host *sh)
4919 struct ctlr_info *h = shost_to_hba(sh);
4920 unsigned long flags;
4923 * Don't let rescans be initiated on a controller known to be locked
4924 * up. If the controller locks up *during* a rescan, that thread is
4925 * probably hosed, but at least we can prevent new rescan threads from
4926 * piling up on a locked up controller.
4928 if (unlikely(lockup_detected(h)))
4929 return hpsa_scan_complete(h);
4931 /* wait until any scan already in progress is finished. */
4933 spin_lock_irqsave(&h->scan_lock, flags);
4934 if (h->scan_finished)
4936 spin_unlock_irqrestore(&h->scan_lock, flags);
4937 wait_event(h->scan_wait_queue, h->scan_finished);
4938 /* Note: We don't need to worry about a race between this
4939 * thread and driver unload because the midlayer will
4940 * have incremented the reference count, so unload won't
4941 * happen if we're in here.
4944 h->scan_finished = 0; /* mark scan as in progress */
4945 spin_unlock_irqrestore(&h->scan_lock, flags);
4947 if (unlikely(lockup_detected(h)))
4948 return hpsa_scan_complete(h);
4950 hpsa_update_scsi_devices(h);
4952 hpsa_scan_complete(h);
4955 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth)
4957 struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata;
4964 else if (qdepth > logical_drive->queue_depth)
4965 qdepth = logical_drive->queue_depth;
4967 return scsi_change_queue_depth(sdev, qdepth);
4970 static int hpsa_scan_finished(struct Scsi_Host *sh,
4971 unsigned long elapsed_time)
4973 struct ctlr_info *h = shost_to_hba(sh);
4974 unsigned long flags;
4977 spin_lock_irqsave(&h->scan_lock, flags);
4978 finished = h->scan_finished;
4979 spin_unlock_irqrestore(&h->scan_lock, flags);
4983 static int hpsa_scsi_host_alloc(struct ctlr_info *h)
4985 struct Scsi_Host *sh;
4988 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
4990 dev_err(&h->pdev->dev, "scsi_host_alloc failed\n");
4997 sh->max_channel = 3;
4998 sh->max_cmd_len = MAX_COMMAND_SIZE;
4999 sh->max_lun = HPSA_MAX_LUN;
5000 sh->max_id = HPSA_MAX_LUN;
5001 sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS;
5002 sh->cmd_per_lun = sh->can_queue;
5003 sh->sg_tablesize = h->maxsgentries;
5004 sh->hostdata[0] = (unsigned long) h;
5005 sh->irq = h->intr[h->intr_mode];
5006 sh->unique_id = sh->irq;
5007 error = scsi_init_shared_tag_map(sh, sh->can_queue);
5009 dev_err(&h->pdev->dev,
5010 "%s: scsi_init_shared_tag_map failed for controller %d\n",
5019 static int hpsa_scsi_add_host(struct ctlr_info *h)
5023 rv = scsi_add_host(h->scsi_host, &h->pdev->dev);
5025 dev_err(&h->pdev->dev, "scsi_add_host failed\n");
5028 scsi_scan_host(h->scsi_host);
5033 * The block layer has already gone to the trouble of picking out a unique,
5034 * small-integer tag for this request. We use an offset from that value as
5035 * an index to select our command block. (The offset allows us to reserve the
5036 * low-numbered entries for our own uses.)
5038 static int hpsa_get_cmd_index(struct scsi_cmnd *scmd)
5040 int idx = scmd->request->tag;
5045 /* Offset to leave space for internal cmds. */
5046 return idx += HPSA_NRESERVED_CMDS;
5050 * Send a TEST_UNIT_READY command to the specified LUN using the specified
5051 * reply queue; returns zero if the unit is ready, and non-zero otherwise.
5053 static int hpsa_send_test_unit_ready(struct ctlr_info *h,
5054 struct CommandList *c, unsigned char lunaddr[],
5059 /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */
5060 (void) fill_cmd(c, TEST_UNIT_READY, h,
5061 NULL, 0, 0, lunaddr, TYPE_CMD);
5062 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5065 /* no unmap needed here because no data xfer. */
5067 /* Check if the unit is already ready. */
5068 if (c->err_info->CommandStatus == CMD_SUCCESS)
5072 * The first command sent after reset will receive "unit attention" to
5073 * indicate that the LUN has been reset...this is actually what we're
5074 * looking for (but, success is good too).
5076 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
5077 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
5078 (c->err_info->SenseInfo[2] == NO_SENSE ||
5079 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
5086 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary;
5087 * returns zero when the unit is ready, and non-zero when giving up.
5089 static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h,
5090 struct CommandList *c,
5091 unsigned char lunaddr[], int reply_queue)
5095 int waittime = 1; /* seconds */
5097 /* Send test unit ready until device ready, or give up. */
5098 for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) {
5101 * Wait for a bit. do this first, because if we send
5102 * the TUR right away, the reset will just abort it.
5104 msleep(1000 * waittime);
5106 rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue);
5110 /* Increase wait time with each try, up to a point. */
5111 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
5114 dev_warn(&h->pdev->dev,
5115 "waiting %d secs for device to become ready.\n",
5122 static int wait_for_device_to_become_ready(struct ctlr_info *h,
5123 unsigned char lunaddr[],
5130 struct CommandList *c;
5135 * If no specific reply queue was requested, then send the TUR
5136 * repeatedly, requesting a reply on each reply queue; otherwise execute
5137 * the loop exactly once using only the specified queue.
5139 if (reply_queue == DEFAULT_REPLY_QUEUE) {
5141 last_queue = h->nreply_queues - 1;
5143 first_queue = reply_queue;
5144 last_queue = reply_queue;
5147 for (rq = first_queue; rq <= last_queue; rq++) {
5148 rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq);
5154 dev_warn(&h->pdev->dev, "giving up on device.\n");
5156 dev_warn(&h->pdev->dev, "device is ready.\n");
5162 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
5163 * complaining. Doing a host- or bus-reset can't do anything good here.
5165 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
5168 struct ctlr_info *h;
5169 struct hpsa_scsi_dev_t *dev;
5172 /* find the controller to which the command to be aborted was sent */
5173 h = sdev_to_hba(scsicmd->device);
5174 if (h == NULL) /* paranoia */
5177 if (lockup_detected(h))
5180 dev = scsicmd->device->hostdata;
5182 dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__);
5186 /* if controller locked up, we can guarantee command won't complete */
5187 if (lockup_detected(h)) {
5188 snprintf(msg, sizeof(msg),
5189 "cmd %d RESET FAILED, lockup detected",
5190 hpsa_get_cmd_index(scsicmd));
5191 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5195 /* this reset request might be the result of a lockup; check */
5196 if (detect_controller_lockup(h)) {
5197 snprintf(msg, sizeof(msg),
5198 "cmd %d RESET FAILED, new lockup detected",
5199 hpsa_get_cmd_index(scsicmd));
5200 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5204 /* Do not attempt on controller */
5205 if (is_hba_lunid(dev->scsi3addr))
5208 hpsa_show_dev_msg(KERN_WARNING, h, dev, "resetting");
5210 /* send a reset to the SCSI LUN which the command was sent to */
5211 rc = hpsa_do_reset(h, dev, dev->scsi3addr, HPSA_RESET_TYPE_LUN,
5212 DEFAULT_REPLY_QUEUE);
5213 snprintf(msg, sizeof(msg), "reset %s",
5214 rc == 0 ? "completed successfully" : "failed");
5215 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5216 return rc == 0 ? SUCCESS : FAILED;
5219 static void swizzle_abort_tag(u8 *tag)
5223 memcpy(original_tag, tag, 8);
5224 tag[0] = original_tag[3];
5225 tag[1] = original_tag[2];
5226 tag[2] = original_tag[1];
5227 tag[3] = original_tag[0];
5228 tag[4] = original_tag[7];
5229 tag[5] = original_tag[6];
5230 tag[6] = original_tag[5];
5231 tag[7] = original_tag[4];
5234 static void hpsa_get_tag(struct ctlr_info *h,
5235 struct CommandList *c, __le32 *taglower, __le32 *tagupper)
5238 if (c->cmd_type == CMD_IOACCEL1) {
5239 struct io_accel1_cmd *cm1 = (struct io_accel1_cmd *)
5240 &h->ioaccel_cmd_pool[c->cmdindex];
5241 tag = le64_to_cpu(cm1->tag);
5242 *tagupper = cpu_to_le32(tag >> 32);
5243 *taglower = cpu_to_le32(tag);
5246 if (c->cmd_type == CMD_IOACCEL2) {
5247 struct io_accel2_cmd *cm2 = (struct io_accel2_cmd *)
5248 &h->ioaccel2_cmd_pool[c->cmdindex];
5249 /* upper tag not used in ioaccel2 mode */
5250 memset(tagupper, 0, sizeof(*tagupper));
5251 *taglower = cm2->Tag;
5254 tag = le64_to_cpu(c->Header.tag);
5255 *tagupper = cpu_to_le32(tag >> 32);
5256 *taglower = cpu_to_le32(tag);
5259 static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr,
5260 struct CommandList *abort, int reply_queue)
5263 struct CommandList *c;
5264 struct ErrorInfo *ei;
5265 __le32 tagupper, taglower;
5269 /* fill_cmd can't fail here, no buffer to map */
5270 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &abort->Header.tag,
5271 0, 0, scsi3addr, TYPE_MSG);
5272 if (h->needs_abort_tags_swizzled)
5273 swizzle_abort_tag(&c->Request.CDB[4]);
5274 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5275 hpsa_get_tag(h, abort, &taglower, &tagupper);
5276 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd(abort) completed.\n",
5277 __func__, tagupper, taglower);
5278 /* no unmap needed here because no data xfer. */
5281 switch (ei->CommandStatus) {
5284 case CMD_TMF_STATUS:
5285 rc = hpsa_evaluate_tmf_status(h, c);
5287 case CMD_UNABORTABLE: /* Very common, don't make noise. */
5291 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: interpreting error.\n",
5292 __func__, tagupper, taglower);
5293 hpsa_scsi_interpret_error(h, c);
5298 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n",
5299 __func__, tagupper, taglower);
5303 static void setup_ioaccel2_abort_cmd(struct CommandList *c, struct ctlr_info *h,
5304 struct CommandList *command_to_abort, int reply_queue)
5306 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5307 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
5308 struct io_accel2_cmd *c2a =
5309 &h->ioaccel2_cmd_pool[command_to_abort->cmdindex];
5310 struct scsi_cmnd *scmd = command_to_abort->scsi_cmd;
5311 struct hpsa_scsi_dev_t *dev = scmd->device->hostdata;
5314 * We're overlaying struct hpsa_tmf_struct on top of something which
5315 * was allocated as a struct io_accel2_cmd, so we better be sure it
5316 * actually fits, and doesn't overrun the error info space.
5318 BUILD_BUG_ON(sizeof(struct hpsa_tmf_struct) >
5319 sizeof(struct io_accel2_cmd));
5320 BUG_ON(offsetof(struct io_accel2_cmd, error_data) <
5321 offsetof(struct hpsa_tmf_struct, error_len) +
5322 sizeof(ac->error_len));
5324 c->cmd_type = IOACCEL2_TMF;
5325 c->scsi_cmd = SCSI_CMD_BUSY;
5327 /* Adjust the DMA address to point to the accelerated command buffer */
5328 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
5329 (c->cmdindex * sizeof(struct io_accel2_cmd));
5330 BUG_ON(c->busaddr & 0x0000007F);
5332 memset(ac, 0, sizeof(*c2)); /* yes this is correct */
5333 ac->iu_type = IOACCEL2_IU_TMF_TYPE;
5334 ac->reply_queue = reply_queue;
5335 ac->tmf = IOACCEL2_TMF_ABORT;
5336 ac->it_nexus = cpu_to_le32(dev->ioaccel_handle);
5337 memset(ac->lun_id, 0, sizeof(ac->lun_id));
5338 ac->tag = cpu_to_le64(c->cmdindex << DIRECT_LOOKUP_SHIFT);
5339 ac->abort_tag = cpu_to_le64(le32_to_cpu(c2a->Tag));
5340 ac->error_ptr = cpu_to_le64(c->busaddr +
5341 offsetof(struct io_accel2_cmd, error_data));
5342 ac->error_len = cpu_to_le32(sizeof(c2->error_data));
5345 /* ioaccel2 path firmware cannot handle abort task requests.
5346 * Change abort requests to physical target reset, and send to the
5347 * address of the physical disk used for the ioaccel 2 command.
5348 * Return 0 on success (IO_OK)
5352 static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h,
5353 unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
5356 struct scsi_cmnd *scmd; /* scsi command within request being aborted */
5357 struct hpsa_scsi_dev_t *dev; /* device to which scsi cmd was sent */
5358 unsigned char phys_scsi3addr[8]; /* addr of phys disk with volume */
5359 unsigned char *psa = &phys_scsi3addr[0];
5361 /* Get a pointer to the hpsa logical device. */
5362 scmd = abort->scsi_cmd;
5363 dev = (struct hpsa_scsi_dev_t *)(scmd->device->hostdata);
5365 dev_warn(&h->pdev->dev,
5366 "Cannot abort: no device pointer for command.\n");
5367 return -1; /* not abortable */
5370 if (h->raid_offload_debug > 0)
5371 dev_info(&h->pdev->dev,
5372 "scsi %d:%d:%d:%d %s scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5373 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
5375 scsi3addr[0], scsi3addr[1], scsi3addr[2], scsi3addr[3],
5376 scsi3addr[4], scsi3addr[5], scsi3addr[6], scsi3addr[7]);
5378 if (!dev->offload_enabled) {
5379 dev_warn(&h->pdev->dev,
5380 "Can't abort: device is not operating in HP SSD Smart Path mode.\n");
5381 return -1; /* not abortable */
5384 /* Incoming scsi3addr is logical addr. We need physical disk addr. */
5385 if (!hpsa_get_pdisk_of_ioaccel2(h, abort, psa)) {
5386 dev_warn(&h->pdev->dev, "Can't abort: Failed lookup of physical address.\n");
5387 return -1; /* not abortable */
5390 /* send the reset */
5391 if (h->raid_offload_debug > 0)
5392 dev_info(&h->pdev->dev,
5393 "Reset as abort: Resetting physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5394 psa[0], psa[1], psa[2], psa[3],
5395 psa[4], psa[5], psa[6], psa[7]);
5396 rc = hpsa_do_reset(h, dev, psa, HPSA_RESET_TYPE_TARGET, reply_queue);
5398 dev_warn(&h->pdev->dev,
5399 "Reset as abort: Failed on physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5400 psa[0], psa[1], psa[2], psa[3],
5401 psa[4], psa[5], psa[6], psa[7]);
5402 return rc; /* failed to reset */
5405 /* wait for device to recover */
5406 if (wait_for_device_to_become_ready(h, psa, reply_queue) != 0) {
5407 dev_warn(&h->pdev->dev,
5408 "Reset as abort: Failed: Device never recovered from reset: 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5409 psa[0], psa[1], psa[2], psa[3],
5410 psa[4], psa[5], psa[6], psa[7]);
5411 return -1; /* failed to recover */
5414 /* device recovered */
5415 dev_info(&h->pdev->dev,
5416 "Reset as abort: Device recovered from reset: scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5417 psa[0], psa[1], psa[2], psa[3],
5418 psa[4], psa[5], psa[6], psa[7]);
5420 return rc; /* success */
5423 static int hpsa_send_abort_ioaccel2(struct ctlr_info *h,
5424 struct CommandList *abort, int reply_queue)
5427 struct CommandList *c;
5428 __le32 taglower, tagupper;
5429 struct hpsa_scsi_dev_t *dev;
5430 struct io_accel2_cmd *c2;
5432 dev = abort->scsi_cmd->device->hostdata;
5433 if (!dev->offload_enabled && !dev->hba_ioaccel_enabled)
5437 setup_ioaccel2_abort_cmd(c, h, abort, reply_queue);
5438 c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5439 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5440 hpsa_get_tag(h, abort, &taglower, &tagupper);
5441 dev_dbg(&h->pdev->dev,
5442 "%s: Tag:0x%08x:%08x: do_simple_cmd(ioaccel2 abort) completed.\n",
5443 __func__, tagupper, taglower);
5444 /* no unmap needed here because no data xfer. */
5446 dev_dbg(&h->pdev->dev,
5447 "%s: Tag:0x%08x:%08x: abort service response = 0x%02x.\n",
5448 __func__, tagupper, taglower, c2->error_data.serv_response);
5449 switch (c2->error_data.serv_response) {
5450 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
5451 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
5454 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
5455 case IOACCEL2_SERV_RESPONSE_FAILURE:
5456 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
5460 dev_warn(&h->pdev->dev,
5461 "%s: Tag:0x%08x:%08x: unknown abort service response 0x%02x\n",
5462 __func__, tagupper, taglower,
5463 c2->error_data.serv_response);
5467 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", __func__,
5468 tagupper, taglower);
5472 static int hpsa_send_abort_both_ways(struct ctlr_info *h,
5473 unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
5476 * ioccelerator mode 2 commands should be aborted via the
5477 * accelerated path, since RAID path is unaware of these commands,
5478 * but not all underlying firmware can handle abort TMF.
5479 * Change abort to physical device reset when abort TMF is unsupported.
5481 if (abort->cmd_type == CMD_IOACCEL2) {
5482 if (HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags)
5483 return hpsa_send_abort_ioaccel2(h, abort,
5486 return hpsa_send_reset_as_abort_ioaccel2(h, scsi3addr,
5487 abort, reply_queue);
5489 return hpsa_send_abort(h, scsi3addr, abort, reply_queue);
5492 /* Find out which reply queue a command was meant to return on */
5493 static int hpsa_extract_reply_queue(struct ctlr_info *h,
5494 struct CommandList *c)
5496 if (c->cmd_type == CMD_IOACCEL2)
5497 return h->ioaccel2_cmd_pool[c->cmdindex].reply_queue;
5498 return c->Header.ReplyQueue;
5502 * Limit concurrency of abort commands to prevent
5503 * over-subscription of commands
5505 static inline int wait_for_available_abort_cmd(struct ctlr_info *h)
5507 #define ABORT_CMD_WAIT_MSECS 5000
5508 return !wait_event_timeout(h->abort_cmd_wait_queue,
5509 atomic_dec_if_positive(&h->abort_cmds_available) >= 0,
5510 msecs_to_jiffies(ABORT_CMD_WAIT_MSECS));
5513 /* Send an abort for the specified command.
5514 * If the device and controller support it,
5515 * send a task abort request.
5517 static int hpsa_eh_abort_handler(struct scsi_cmnd *sc)
5521 struct ctlr_info *h;
5522 struct hpsa_scsi_dev_t *dev;
5523 struct CommandList *abort; /* pointer to command to be aborted */
5524 struct scsi_cmnd *as; /* ptr to scsi cmd inside aborted command. */
5525 char msg[256]; /* For debug messaging. */
5527 __le32 tagupper, taglower;
5528 int refcount, reply_queue;
5533 if (sc->device == NULL)
5536 /* Find the controller of the command to be aborted */
5537 h = sdev_to_hba(sc->device);
5541 /* Find the device of the command to be aborted */
5542 dev = sc->device->hostdata;
5544 dev_err(&h->pdev->dev, "%s FAILED, Device lookup failed.\n",
5549 /* If controller locked up, we can guarantee command won't complete */
5550 if (lockup_detected(h)) {
5551 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5552 "ABORT FAILED, lockup detected");
5556 /* This is a good time to check if controller lockup has occurred */
5557 if (detect_controller_lockup(h)) {
5558 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5559 "ABORT FAILED, new lockup detected");
5563 /* Check that controller supports some kind of task abort */
5564 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) &&
5565 !(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
5568 memset(msg, 0, sizeof(msg));
5569 ml += sprintf(msg+ml, "scsi %d:%d:%d:%llu %s %p",
5570 h->scsi_host->host_no, sc->device->channel,
5571 sc->device->id, sc->device->lun,
5572 "Aborting command", sc);
5574 /* Get SCSI command to be aborted */
5575 abort = (struct CommandList *) sc->host_scribble;
5576 if (abort == NULL) {
5577 /* This can happen if the command already completed. */
5580 refcount = atomic_inc_return(&abort->refcount);
5581 if (refcount == 1) { /* Command is done already. */
5586 /* Don't bother trying the abort if we know it won't work. */
5587 if (abort->cmd_type != CMD_IOACCEL2 &&
5588 abort->cmd_type != CMD_IOACCEL1 && !dev->supports_aborts) {
5594 * Check that we're aborting the right command.
5595 * It's possible the CommandList already completed and got re-used.
5597 if (abort->scsi_cmd != sc) {
5602 abort->abort_pending = true;
5603 hpsa_get_tag(h, abort, &taglower, &tagupper);
5604 reply_queue = hpsa_extract_reply_queue(h, abort);
5605 ml += sprintf(msg+ml, "Tag:0x%08x:%08x ", tagupper, taglower);
5606 as = abort->scsi_cmd;
5608 ml += sprintf(msg+ml,
5609 "CDBLen: %d CDB: 0x%02x%02x... SN: 0x%lx ",
5610 as->cmd_len, as->cmnd[0], as->cmnd[1],
5612 dev_warn(&h->pdev->dev, "%s BEING SENT\n", msg);
5613 hpsa_show_dev_msg(KERN_WARNING, h, dev, "Aborting command");
5616 * Command is in flight, or possibly already completed
5617 * by the firmware (but not to the scsi mid layer) but we can't
5618 * distinguish which. Send the abort down.
5620 if (wait_for_available_abort_cmd(h)) {
5621 dev_warn(&h->pdev->dev,
5622 "%s FAILED, timeout waiting for an abort command to become available.\n",
5627 rc = hpsa_send_abort_both_ways(h, dev->scsi3addr, abort, reply_queue);
5628 atomic_inc(&h->abort_cmds_available);
5629 wake_up_all(&h->abort_cmd_wait_queue);
5631 dev_warn(&h->pdev->dev, "%s SENT, FAILED\n", msg);
5632 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5633 "FAILED to abort command");
5637 dev_info(&h->pdev->dev, "%s SENT, SUCCESS\n", msg);
5638 wait_event(h->event_sync_wait_queue,
5639 abort->scsi_cmd != sc || lockup_detected(h));
5641 return !lockup_detected(h) ? SUCCESS : FAILED;
5645 * For operations with an associated SCSI command, a command block is allocated
5646 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the
5647 * block request tag as an index into a table of entries. cmd_tagged_free() is
5648 * the complement, although cmd_free() may be called instead.
5650 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
5651 struct scsi_cmnd *scmd)
5653 int idx = hpsa_get_cmd_index(scmd);
5654 struct CommandList *c = h->cmd_pool + idx;
5656 if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) {
5657 dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n",
5658 idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1);
5659 /* The index value comes from the block layer, so if it's out of
5660 * bounds, it's probably not our bug.
5665 atomic_inc(&c->refcount);
5666 if (unlikely(!hpsa_is_cmd_idle(c))) {
5668 * We expect that the SCSI layer will hand us a unique tag
5669 * value. Thus, there should never be a collision here between
5670 * two requests...because if the selected command isn't idle
5671 * then someone is going to be very disappointed.
5673 dev_err(&h->pdev->dev,
5674 "tag collision (tag=%d) in cmd_tagged_alloc().\n",
5676 if (c->scsi_cmd != NULL)
5677 scsi_print_command(c->scsi_cmd);
5678 scsi_print_command(scmd);
5681 hpsa_cmd_partial_init(h, idx, c);
5685 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c)
5688 * Release our reference to the block. We don't need to do anything
5689 * else to free it, because it is accessed by index. (There's no point
5690 * in checking the result of the decrement, since we cannot guarantee
5691 * that there isn't a concurrent abort which is also accessing it.)
5693 (void)atomic_dec(&c->refcount);
5697 * For operations that cannot sleep, a command block is allocated at init,
5698 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
5699 * which ones are free or in use. Lock must be held when calling this.
5700 * cmd_free() is the complement.
5701 * This function never gives up and returns NULL. If it hangs,
5702 * another thread must call cmd_free() to free some tags.
5705 static struct CommandList *cmd_alloc(struct ctlr_info *h)
5707 struct CommandList *c;
5712 * There is some *extremely* small but non-zero chance that that
5713 * multiple threads could get in here, and one thread could
5714 * be scanning through the list of bits looking for a free
5715 * one, but the free ones are always behind him, and other
5716 * threads sneak in behind him and eat them before he can
5717 * get to them, so that while there is always a free one, a
5718 * very unlucky thread might be starved anyway, never able to
5719 * beat the other threads. In reality, this happens so
5720 * infrequently as to be indistinguishable from never.
5722 * Note that we start allocating commands before the SCSI host structure
5723 * is initialized. Since the search starts at bit zero, this
5724 * all works, since we have at least one command structure available;
5725 * however, it means that the structures with the low indexes have to be
5726 * reserved for driver-initiated requests, while requests from the block
5727 * layer will use the higher indexes.
5731 i = find_next_zero_bit(h->cmd_pool_bits,
5732 HPSA_NRESERVED_CMDS,
5734 if (unlikely(i >= HPSA_NRESERVED_CMDS)) {
5738 c = h->cmd_pool + i;
5739 refcount = atomic_inc_return(&c->refcount);
5740 if (unlikely(refcount > 1)) {
5741 cmd_free(h, c); /* already in use */
5742 offset = (i + 1) % HPSA_NRESERVED_CMDS;
5745 set_bit(i & (BITS_PER_LONG - 1),
5746 h->cmd_pool_bits + (i / BITS_PER_LONG));
5747 break; /* it's ours now. */
5749 hpsa_cmd_partial_init(h, i, c);
5754 * This is the complementary operation to cmd_alloc(). Note, however, in some
5755 * corner cases it may also be used to free blocks allocated by
5756 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and
5757 * the clear-bit is harmless.
5759 static void cmd_free(struct ctlr_info *h, struct CommandList *c)
5761 if (atomic_dec_and_test(&c->refcount)) {
5764 i = c - h->cmd_pool;
5765 clear_bit(i & (BITS_PER_LONG - 1),
5766 h->cmd_pool_bits + (i / BITS_PER_LONG));
5770 #ifdef CONFIG_COMPAT
5772 static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd,
5775 IOCTL32_Command_struct __user *arg32 =
5776 (IOCTL32_Command_struct __user *) arg;
5777 IOCTL_Command_struct arg64;
5778 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
5782 memset(&arg64, 0, sizeof(arg64));
5784 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
5785 sizeof(arg64.LUN_info));
5786 err |= copy_from_user(&arg64.Request, &arg32->Request,
5787 sizeof(arg64.Request));
5788 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
5789 sizeof(arg64.error_info));
5790 err |= get_user(arg64.buf_size, &arg32->buf_size);
5791 err |= get_user(cp, &arg32->buf);
5792 arg64.buf = compat_ptr(cp);
5793 err |= copy_to_user(p, &arg64, sizeof(arg64));
5798 err = hpsa_ioctl(dev, CCISS_PASSTHRU, p);
5801 err |= copy_in_user(&arg32->error_info, &p->error_info,
5802 sizeof(arg32->error_info));
5808 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
5809 int cmd, void __user *arg)
5811 BIG_IOCTL32_Command_struct __user *arg32 =
5812 (BIG_IOCTL32_Command_struct __user *) arg;
5813 BIG_IOCTL_Command_struct arg64;
5814 BIG_IOCTL_Command_struct __user *p =
5815 compat_alloc_user_space(sizeof(arg64));
5819 memset(&arg64, 0, sizeof(arg64));
5821 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
5822 sizeof(arg64.LUN_info));
5823 err |= copy_from_user(&arg64.Request, &arg32->Request,
5824 sizeof(arg64.Request));
5825 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
5826 sizeof(arg64.error_info));
5827 err |= get_user(arg64.buf_size, &arg32->buf_size);
5828 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
5829 err |= get_user(cp, &arg32->buf);
5830 arg64.buf = compat_ptr(cp);
5831 err |= copy_to_user(p, &arg64, sizeof(arg64));
5836 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, p);
5839 err |= copy_in_user(&arg32->error_info, &p->error_info,
5840 sizeof(arg32->error_info));
5846 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
5849 case CCISS_GETPCIINFO:
5850 case CCISS_GETINTINFO:
5851 case CCISS_SETINTINFO:
5852 case CCISS_GETNODENAME:
5853 case CCISS_SETNODENAME:
5854 case CCISS_GETHEARTBEAT:
5855 case CCISS_GETBUSTYPES:
5856 case CCISS_GETFIRMVER:
5857 case CCISS_GETDRIVVER:
5858 case CCISS_REVALIDVOLS:
5859 case CCISS_DEREGDISK:
5860 case CCISS_REGNEWDISK:
5862 case CCISS_RESCANDISK:
5863 case CCISS_GETLUNINFO:
5864 return hpsa_ioctl(dev, cmd, arg);
5866 case CCISS_PASSTHRU32:
5867 return hpsa_ioctl32_passthru(dev, cmd, arg);
5868 case CCISS_BIG_PASSTHRU32:
5869 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
5872 return -ENOIOCTLCMD;
5877 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
5879 struct hpsa_pci_info pciinfo;
5883 pciinfo.domain = pci_domain_nr(h->pdev->bus);
5884 pciinfo.bus = h->pdev->bus->number;
5885 pciinfo.dev_fn = h->pdev->devfn;
5886 pciinfo.board_id = h->board_id;
5887 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
5892 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
5894 DriverVer_type DriverVer;
5895 unsigned char vmaj, vmin, vsubmin;
5898 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
5899 &vmaj, &vmin, &vsubmin);
5901 dev_info(&h->pdev->dev, "driver version string '%s' "
5902 "unrecognized.", HPSA_DRIVER_VERSION);
5907 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
5910 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
5915 static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
5917 IOCTL_Command_struct iocommand;
5918 struct CommandList *c;
5925 if (!capable(CAP_SYS_RAWIO))
5927 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
5929 if ((iocommand.buf_size < 1) &&
5930 (iocommand.Request.Type.Direction != XFER_NONE)) {
5933 if (iocommand.buf_size > 0) {
5934 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
5937 if (iocommand.Request.Type.Direction & XFER_WRITE) {
5938 /* Copy the data into the buffer we created */
5939 if (copy_from_user(buff, iocommand.buf,
5940 iocommand.buf_size)) {
5945 memset(buff, 0, iocommand.buf_size);
5950 /* Fill in the command type */
5951 c->cmd_type = CMD_IOCTL_PEND;
5952 c->scsi_cmd = SCSI_CMD_BUSY;
5953 /* Fill in Command Header */
5954 c->Header.ReplyQueue = 0; /* unused in simple mode */
5955 if (iocommand.buf_size > 0) { /* buffer to fill */
5956 c->Header.SGList = 1;
5957 c->Header.SGTotal = cpu_to_le16(1);
5958 } else { /* no buffers to fill */
5959 c->Header.SGList = 0;
5960 c->Header.SGTotal = cpu_to_le16(0);
5962 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
5964 /* Fill in Request block */
5965 memcpy(&c->Request, &iocommand.Request,
5966 sizeof(c->Request));
5968 /* Fill in the scatter gather information */
5969 if (iocommand.buf_size > 0) {
5970 temp64 = pci_map_single(h->pdev, buff,
5971 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
5972 if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) {
5973 c->SG[0].Addr = cpu_to_le64(0);
5974 c->SG[0].Len = cpu_to_le32(0);
5978 c->SG[0].Addr = cpu_to_le64(temp64);
5979 c->SG[0].Len = cpu_to_le32(iocommand.buf_size);
5980 c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */
5982 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
5983 if (iocommand.buf_size > 0)
5984 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
5985 check_ioctl_unit_attention(h, c);
5991 /* Copy the error information out */
5992 memcpy(&iocommand.error_info, c->err_info,
5993 sizeof(iocommand.error_info));
5994 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
5998 if ((iocommand.Request.Type.Direction & XFER_READ) &&
5999 iocommand.buf_size > 0) {
6000 /* Copy the data out of the buffer we created */
6001 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
6013 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
6015 BIG_IOCTL_Command_struct *ioc;
6016 struct CommandList *c;
6017 unsigned char **buff = NULL;
6018 int *buff_size = NULL;
6024 BYTE __user *data_ptr;
6028 if (!capable(CAP_SYS_RAWIO))
6030 ioc = (BIG_IOCTL_Command_struct *)
6031 kmalloc(sizeof(*ioc), GFP_KERNEL);
6036 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
6040 if ((ioc->buf_size < 1) &&
6041 (ioc->Request.Type.Direction != XFER_NONE)) {
6045 /* Check kmalloc limits using all SGs */
6046 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
6050 if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) {
6054 buff = kzalloc(SG_ENTRIES_IN_CMD * sizeof(char *), GFP_KERNEL);
6059 buff_size = kmalloc(SG_ENTRIES_IN_CMD * sizeof(int), GFP_KERNEL);
6064 left = ioc->buf_size;
6065 data_ptr = ioc->buf;
6067 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
6068 buff_size[sg_used] = sz;
6069 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
6070 if (buff[sg_used] == NULL) {
6074 if (ioc->Request.Type.Direction & XFER_WRITE) {
6075 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
6080 memset(buff[sg_used], 0, sz);
6087 c->cmd_type = CMD_IOCTL_PEND;
6088 c->scsi_cmd = SCSI_CMD_BUSY;
6089 c->Header.ReplyQueue = 0;
6090 c->Header.SGList = (u8) sg_used;
6091 c->Header.SGTotal = cpu_to_le16(sg_used);
6092 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
6093 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
6094 if (ioc->buf_size > 0) {
6096 for (i = 0; i < sg_used; i++) {
6097 temp64 = pci_map_single(h->pdev, buff[i],
6098 buff_size[i], PCI_DMA_BIDIRECTIONAL);
6099 if (dma_mapping_error(&h->pdev->dev,
6100 (dma_addr_t) temp64)) {
6101 c->SG[i].Addr = cpu_to_le64(0);
6102 c->SG[i].Len = cpu_to_le32(0);
6103 hpsa_pci_unmap(h->pdev, c, i,
6104 PCI_DMA_BIDIRECTIONAL);
6108 c->SG[i].Addr = cpu_to_le64(temp64);
6109 c->SG[i].Len = cpu_to_le32(buff_size[i]);
6110 c->SG[i].Ext = cpu_to_le32(0);
6112 c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST);
6114 status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
6116 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
6117 check_ioctl_unit_attention(h, c);
6123 /* Copy the error information out */
6124 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
6125 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
6129 if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) {
6132 /* Copy the data out of the buffer we created */
6133 BYTE __user *ptr = ioc->buf;
6134 for (i = 0; i < sg_used; i++) {
6135 if (copy_to_user(ptr, buff[i], buff_size[i])) {
6139 ptr += buff_size[i];
6149 for (i = 0; i < sg_used; i++)
6158 static void check_ioctl_unit_attention(struct ctlr_info *h,
6159 struct CommandList *c)
6161 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
6162 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
6163 (void) check_for_unit_attention(h, c);
6169 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
6171 struct ctlr_info *h;
6172 void __user *argp = (void __user *)arg;
6175 h = sdev_to_hba(dev);
6178 case CCISS_DEREGDISK:
6179 case CCISS_REGNEWDISK:
6181 hpsa_scan_start(h->scsi_host);
6183 case CCISS_GETPCIINFO:
6184 return hpsa_getpciinfo_ioctl(h, argp);
6185 case CCISS_GETDRIVVER:
6186 return hpsa_getdrivver_ioctl(h, argp);
6187 case CCISS_PASSTHRU:
6188 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6190 rc = hpsa_passthru_ioctl(h, argp);
6191 atomic_inc(&h->passthru_cmds_avail);
6193 case CCISS_BIG_PASSTHRU:
6194 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6196 rc = hpsa_big_passthru_ioctl(h, argp);
6197 atomic_inc(&h->passthru_cmds_avail);
6204 static void hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr,
6207 struct CommandList *c;
6211 /* fill_cmd can't fail here, no data buffer to map */
6212 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
6213 RAID_CTLR_LUNID, TYPE_MSG);
6214 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */
6216 enqueue_cmd_and_start_io(h, c);
6217 /* Don't wait for completion, the reset won't complete. Don't free
6218 * the command either. This is the last command we will send before
6219 * re-initializing everything, so it doesn't matter and won't leak.
6224 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
6225 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
6228 int pci_dir = XFER_NONE;
6229 u64 tag; /* for commands to be aborted */
6231 c->cmd_type = CMD_IOCTL_PEND;
6232 c->scsi_cmd = SCSI_CMD_BUSY;
6233 c->Header.ReplyQueue = 0;
6234 if (buff != NULL && size > 0) {
6235 c->Header.SGList = 1;
6236 c->Header.SGTotal = cpu_to_le16(1);
6238 c->Header.SGList = 0;
6239 c->Header.SGTotal = cpu_to_le16(0);
6241 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
6243 if (cmd_type == TYPE_CMD) {
6246 /* are we trying to read a vital product page */
6247 if (page_code & VPD_PAGE) {
6248 c->Request.CDB[1] = 0x01;
6249 c->Request.CDB[2] = (page_code & 0xff);
6251 c->Request.CDBLen = 6;
6252 c->Request.type_attr_dir =
6253 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6254 c->Request.Timeout = 0;
6255 c->Request.CDB[0] = HPSA_INQUIRY;
6256 c->Request.CDB[4] = size & 0xFF;
6258 case HPSA_REPORT_LOG:
6259 case HPSA_REPORT_PHYS:
6260 /* Talking to controller so It's a physical command
6261 mode = 00 target = 0. Nothing to write.
6263 c->Request.CDBLen = 12;
6264 c->Request.type_attr_dir =
6265 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6266 c->Request.Timeout = 0;
6267 c->Request.CDB[0] = cmd;
6268 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6269 c->Request.CDB[7] = (size >> 16) & 0xFF;
6270 c->Request.CDB[8] = (size >> 8) & 0xFF;
6271 c->Request.CDB[9] = size & 0xFF;
6273 case HPSA_CACHE_FLUSH:
6274 c->Request.CDBLen = 12;
6275 c->Request.type_attr_dir =
6276 TYPE_ATTR_DIR(cmd_type,
6277 ATTR_SIMPLE, XFER_WRITE);
6278 c->Request.Timeout = 0;
6279 c->Request.CDB[0] = BMIC_WRITE;
6280 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
6281 c->Request.CDB[7] = (size >> 8) & 0xFF;
6282 c->Request.CDB[8] = size & 0xFF;
6284 case TEST_UNIT_READY:
6285 c->Request.CDBLen = 6;
6286 c->Request.type_attr_dir =
6287 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6288 c->Request.Timeout = 0;
6290 case HPSA_GET_RAID_MAP:
6291 c->Request.CDBLen = 12;
6292 c->Request.type_attr_dir =
6293 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6294 c->Request.Timeout = 0;
6295 c->Request.CDB[0] = HPSA_CISS_READ;
6296 c->Request.CDB[1] = cmd;
6297 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6298 c->Request.CDB[7] = (size >> 16) & 0xFF;
6299 c->Request.CDB[8] = (size >> 8) & 0xFF;
6300 c->Request.CDB[9] = size & 0xFF;
6302 case BMIC_SENSE_CONTROLLER_PARAMETERS:
6303 c->Request.CDBLen = 10;
6304 c->Request.type_attr_dir =
6305 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6306 c->Request.Timeout = 0;
6307 c->Request.CDB[0] = BMIC_READ;
6308 c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS;
6309 c->Request.CDB[7] = (size >> 16) & 0xFF;
6310 c->Request.CDB[8] = (size >> 8) & 0xFF;
6312 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
6313 c->Request.CDBLen = 10;
6314 c->Request.type_attr_dir =
6315 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6316 c->Request.Timeout = 0;
6317 c->Request.CDB[0] = BMIC_READ;
6318 c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE;
6319 c->Request.CDB[7] = (size >> 16) & 0xFF;
6320 c->Request.CDB[8] = (size >> 8) & 0XFF;
6323 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
6327 } else if (cmd_type == TYPE_MSG) {
6330 case HPSA_DEVICE_RESET_MSG:
6331 c->Request.CDBLen = 16;
6332 c->Request.type_attr_dir =
6333 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6334 c->Request.Timeout = 0; /* Don't time out */
6335 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
6336 c->Request.CDB[0] = cmd;
6337 c->Request.CDB[1] = HPSA_RESET_TYPE_LUN;
6338 /* If bytes 4-7 are zero, it means reset the */
6340 c->Request.CDB[4] = 0x00;
6341 c->Request.CDB[5] = 0x00;
6342 c->Request.CDB[6] = 0x00;
6343 c->Request.CDB[7] = 0x00;
6345 case HPSA_ABORT_MSG:
6346 memcpy(&tag, buff, sizeof(tag));
6347 dev_dbg(&h->pdev->dev,
6348 "Abort Tag:0x%016llx using rqst Tag:0x%016llx",
6349 tag, c->Header.tag);
6350 c->Request.CDBLen = 16;
6351 c->Request.type_attr_dir =
6352 TYPE_ATTR_DIR(cmd_type,
6353 ATTR_SIMPLE, XFER_WRITE);
6354 c->Request.Timeout = 0; /* Don't time out */
6355 c->Request.CDB[0] = HPSA_TASK_MANAGEMENT;
6356 c->Request.CDB[1] = HPSA_TMF_ABORT_TASK;
6357 c->Request.CDB[2] = 0x00; /* reserved */
6358 c->Request.CDB[3] = 0x00; /* reserved */
6359 /* Tag to abort goes in CDB[4]-CDB[11] */
6360 memcpy(&c->Request.CDB[4], &tag, sizeof(tag));
6361 c->Request.CDB[12] = 0x00; /* reserved */
6362 c->Request.CDB[13] = 0x00; /* reserved */
6363 c->Request.CDB[14] = 0x00; /* reserved */
6364 c->Request.CDB[15] = 0x00; /* reserved */
6367 dev_warn(&h->pdev->dev, "unknown message type %d\n",
6372 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
6376 switch (GET_DIR(c->Request.type_attr_dir)) {
6378 pci_dir = PCI_DMA_FROMDEVICE;
6381 pci_dir = PCI_DMA_TODEVICE;
6384 pci_dir = PCI_DMA_NONE;
6387 pci_dir = PCI_DMA_BIDIRECTIONAL;
6389 if (hpsa_map_one(h->pdev, c, buff, size, pci_dir))
6395 * Map (physical) PCI mem into (virtual) kernel space
6397 static void __iomem *remap_pci_mem(ulong base, ulong size)
6399 ulong page_base = ((ulong) base) & PAGE_MASK;
6400 ulong page_offs = ((ulong) base) - page_base;
6401 void __iomem *page_remapped = ioremap_nocache(page_base,
6404 return page_remapped ? (page_remapped + page_offs) : NULL;
6407 static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
6409 return h->access.command_completed(h, q);
6412 static inline bool interrupt_pending(struct ctlr_info *h)
6414 return h->access.intr_pending(h);
6417 static inline long interrupt_not_for_us(struct ctlr_info *h)
6419 return (h->access.intr_pending(h) == 0) ||
6420 (h->interrupts_enabled == 0);
6423 static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
6426 if (unlikely(tag_index >= h->nr_cmds)) {
6427 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
6433 static inline void finish_cmd(struct CommandList *c)
6435 dial_up_lockup_detection_on_fw_flash_complete(c->h, c);
6436 if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI
6437 || c->cmd_type == CMD_IOACCEL2))
6438 complete_scsi_command(c);
6439 else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF)
6440 complete(c->waiting);
6443 /* process completion of an indexed ("direct lookup") command */
6444 static inline void process_indexed_cmd(struct ctlr_info *h,
6448 struct CommandList *c;
6450 tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT;
6451 if (!bad_tag(h, tag_index, raw_tag)) {
6452 c = h->cmd_pool + tag_index;
6457 /* Some controllers, like p400, will give us one interrupt
6458 * after a soft reset, even if we turned interrupts off.
6459 * Only need to check for this in the hpsa_xxx_discard_completions
6462 static int ignore_bogus_interrupt(struct ctlr_info *h)
6464 if (likely(!reset_devices))
6467 if (likely(h->interrupts_enabled))
6470 dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled "
6471 "(known firmware bug.) Ignoring.\n");
6477 * Convert &h->q[x] (passed to interrupt handlers) back to h.
6478 * Relies on (h-q[x] == x) being true for x such that
6479 * 0 <= x < MAX_REPLY_QUEUES.
6481 static struct ctlr_info *queue_to_hba(u8 *queue)
6483 return container_of((queue - *queue), struct ctlr_info, q[0]);
6486 static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue)
6488 struct ctlr_info *h = queue_to_hba(queue);
6489 u8 q = *(u8 *) queue;
6492 if (ignore_bogus_interrupt(h))
6495 if (interrupt_not_for_us(h))
6497 h->last_intr_timestamp = get_jiffies_64();
6498 while (interrupt_pending(h)) {
6499 raw_tag = get_next_completion(h, q);
6500 while (raw_tag != FIFO_EMPTY)
6501 raw_tag = next_command(h, q);
6506 static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue)
6508 struct ctlr_info *h = queue_to_hba(queue);
6510 u8 q = *(u8 *) queue;
6512 if (ignore_bogus_interrupt(h))
6515 h->last_intr_timestamp = get_jiffies_64();
6516 raw_tag = get_next_completion(h, q);
6517 while (raw_tag != FIFO_EMPTY)
6518 raw_tag = next_command(h, q);
6522 static irqreturn_t do_hpsa_intr_intx(int irq, void *queue)
6524 struct ctlr_info *h = queue_to_hba((u8 *) queue);
6526 u8 q = *(u8 *) queue;
6528 if (interrupt_not_for_us(h))
6530 h->last_intr_timestamp = get_jiffies_64();
6531 while (interrupt_pending(h)) {
6532 raw_tag = get_next_completion(h, q);
6533 while (raw_tag != FIFO_EMPTY) {
6534 process_indexed_cmd(h, raw_tag);
6535 raw_tag = next_command(h, q);
6541 static irqreturn_t do_hpsa_intr_msi(int irq, void *queue)
6543 struct ctlr_info *h = queue_to_hba(queue);
6545 u8 q = *(u8 *) queue;
6547 h->last_intr_timestamp = get_jiffies_64();
6548 raw_tag = get_next_completion(h, q);
6549 while (raw_tag != FIFO_EMPTY) {
6550 process_indexed_cmd(h, raw_tag);
6551 raw_tag = next_command(h, q);
6556 /* Send a message CDB to the firmware. Careful, this only works
6557 * in simple mode, not performant mode due to the tag lookup.
6558 * We only ever use this immediately after a controller reset.
6560 static int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
6564 struct CommandListHeader CommandHeader;
6565 struct RequestBlock Request;
6566 struct ErrDescriptor ErrorDescriptor;
6568 struct Command *cmd;
6569 static const size_t cmd_sz = sizeof(*cmd) +
6570 sizeof(cmd->ErrorDescriptor);
6574 void __iomem *vaddr;
6577 vaddr = pci_ioremap_bar(pdev, 0);
6581 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
6582 * CCISS commands, so they must be allocated from the lower 4GiB of
6585 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
6591 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
6597 /* This must fit, because of the 32-bit consistent DMA mask. Also,
6598 * although there's no guarantee, we assume that the address is at
6599 * least 4-byte aligned (most likely, it's page-aligned).
6601 paddr32 = cpu_to_le32(paddr64);
6603 cmd->CommandHeader.ReplyQueue = 0;
6604 cmd->CommandHeader.SGList = 0;
6605 cmd->CommandHeader.SGTotal = cpu_to_le16(0);
6606 cmd->CommandHeader.tag = cpu_to_le64(paddr64);
6607 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
6609 cmd->Request.CDBLen = 16;
6610 cmd->Request.type_attr_dir =
6611 TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE);
6612 cmd->Request.Timeout = 0; /* Don't time out */
6613 cmd->Request.CDB[0] = opcode;
6614 cmd->Request.CDB[1] = type;
6615 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
6616 cmd->ErrorDescriptor.Addr =
6617 cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd)));
6618 cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo));
6620 writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET);
6622 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
6623 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
6624 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64)
6626 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
6631 /* we leak the DMA buffer here ... no choice since the controller could
6632 * still complete the command.
6634 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
6635 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
6640 pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
6642 if (tag & HPSA_ERROR_BIT) {
6643 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
6648 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
6653 #define hpsa_noop(p) hpsa_message(p, 3, 0)
6655 static int hpsa_controller_hard_reset(struct pci_dev *pdev,
6656 void __iomem *vaddr, u32 use_doorbell)
6660 /* For everything after the P600, the PCI power state method
6661 * of resetting the controller doesn't work, so we have this
6662 * other way using the doorbell register.
6664 dev_info(&pdev->dev, "using doorbell to reset controller\n");
6665 writel(use_doorbell, vaddr + SA5_DOORBELL);
6667 /* PMC hardware guys tell us we need a 10 second delay after
6668 * doorbell reset and before any attempt to talk to the board
6669 * at all to ensure that this actually works and doesn't fall
6670 * over in some weird corner cases.
6673 } else { /* Try to do it the PCI power state way */
6675 /* Quoting from the Open CISS Specification: "The Power
6676 * Management Control/Status Register (CSR) controls the power
6677 * state of the device. The normal operating state is D0,
6678 * CSR=00h. The software off state is D3, CSR=03h. To reset
6679 * the controller, place the interface device in D3 then to D0,
6680 * this causes a secondary PCI reset which will reset the
6685 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
6687 /* enter the D3hot power management state */
6688 rc = pci_set_power_state(pdev, PCI_D3hot);
6694 /* enter the D0 power management state */
6695 rc = pci_set_power_state(pdev, PCI_D0);
6700 * The P600 requires a small delay when changing states.
6701 * Otherwise we may think the board did not reset and we bail.
6702 * This for kdump only and is particular to the P600.
6709 static void init_driver_version(char *driver_version, int len)
6711 memset(driver_version, 0, len);
6712 strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1);
6715 static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable)
6717 char *driver_version;
6718 int i, size = sizeof(cfgtable->driver_version);
6720 driver_version = kmalloc(size, GFP_KERNEL);
6721 if (!driver_version)
6724 init_driver_version(driver_version, size);
6725 for (i = 0; i < size; i++)
6726 writeb(driver_version[i], &cfgtable->driver_version[i]);
6727 kfree(driver_version);
6731 static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable,
6732 unsigned char *driver_ver)
6736 for (i = 0; i < sizeof(cfgtable->driver_version); i++)
6737 driver_ver[i] = readb(&cfgtable->driver_version[i]);
6740 static int controller_reset_failed(struct CfgTable __iomem *cfgtable)
6743 char *driver_ver, *old_driver_ver;
6744 int rc, size = sizeof(cfgtable->driver_version);
6746 old_driver_ver = kmalloc(2 * size, GFP_KERNEL);
6747 if (!old_driver_ver)
6749 driver_ver = old_driver_ver + size;
6751 /* After a reset, the 32 bytes of "driver version" in the cfgtable
6752 * should have been changed, otherwise we know the reset failed.
6754 init_driver_version(old_driver_ver, size);
6755 read_driver_ver_from_cfgtable(cfgtable, driver_ver);
6756 rc = !memcmp(driver_ver, old_driver_ver, size);
6757 kfree(old_driver_ver);
6760 /* This does a hard reset of the controller using PCI power management
6761 * states or the using the doorbell register.
6763 static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id)
6767 u64 cfg_base_addr_index;
6768 void __iomem *vaddr;
6769 unsigned long paddr;
6770 u32 misc_fw_support;
6772 struct CfgTable __iomem *cfgtable;
6774 u16 command_register;
6776 /* For controllers as old as the P600, this is very nearly
6779 * pci_save_state(pci_dev);
6780 * pci_set_power_state(pci_dev, PCI_D3hot);
6781 * pci_set_power_state(pci_dev, PCI_D0);
6782 * pci_restore_state(pci_dev);
6784 * For controllers newer than the P600, the pci power state
6785 * method of resetting doesn't work so we have another way
6786 * using the doorbell register.
6789 if (!ctlr_is_resettable(board_id)) {
6790 dev_warn(&pdev->dev, "Controller not resettable\n");
6794 /* if controller is soft- but not hard resettable... */
6795 if (!ctlr_is_hard_resettable(board_id))
6796 return -ENOTSUPP; /* try soft reset later. */
6798 /* Save the PCI command register */
6799 pci_read_config_word(pdev, 4, &command_register);
6800 pci_save_state(pdev);
6802 /* find the first memory BAR, so we can find the cfg table */
6803 rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
6806 vaddr = remap_pci_mem(paddr, 0x250);
6810 /* find cfgtable in order to check if reset via doorbell is supported */
6811 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
6812 &cfg_base_addr_index, &cfg_offset);
6815 cfgtable = remap_pci_mem(pci_resource_start(pdev,
6816 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
6821 rc = write_driver_ver_to_cfgtable(cfgtable);
6823 goto unmap_cfgtable;
6825 /* If reset via doorbell register is supported, use that.
6826 * There are two such methods. Favor the newest method.
6828 misc_fw_support = readl(&cfgtable->misc_fw_support);
6829 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2;
6831 use_doorbell = DOORBELL_CTLR_RESET2;
6833 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
6835 dev_warn(&pdev->dev,
6836 "Soft reset not supported. Firmware update is required.\n");
6837 rc = -ENOTSUPP; /* try soft reset */
6838 goto unmap_cfgtable;
6842 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
6844 goto unmap_cfgtable;
6846 pci_restore_state(pdev);
6847 pci_write_config_word(pdev, 4, command_register);
6849 /* Some devices (notably the HP Smart Array 5i Controller)
6850 need a little pause here */
6851 msleep(HPSA_POST_RESET_PAUSE_MSECS);
6853 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
6855 dev_warn(&pdev->dev,
6856 "Failed waiting for board to become ready after hard reset\n");
6857 goto unmap_cfgtable;
6860 rc = controller_reset_failed(vaddr);
6862 goto unmap_cfgtable;
6864 dev_warn(&pdev->dev, "Unable to successfully reset "
6865 "controller. Will try soft reset.\n");
6868 dev_info(&pdev->dev, "board ready after hard reset.\n");
6880 * We cannot read the structure directly, for portability we must use
6882 * This is for debug only.
6884 static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb)
6890 dev_info(dev, "Controller Configuration information\n");
6891 dev_info(dev, "------------------------------------\n");
6892 for (i = 0; i < 4; i++)
6893 temp_name[i] = readb(&(tb->Signature[i]));
6894 temp_name[4] = '\0';
6895 dev_info(dev, " Signature = %s\n", temp_name);
6896 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
6897 dev_info(dev, " Transport methods supported = 0x%x\n",
6898 readl(&(tb->TransportSupport)));
6899 dev_info(dev, " Transport methods active = 0x%x\n",
6900 readl(&(tb->TransportActive)));
6901 dev_info(dev, " Requested transport Method = 0x%x\n",
6902 readl(&(tb->HostWrite.TransportRequest)));
6903 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
6904 readl(&(tb->HostWrite.CoalIntDelay)));
6905 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
6906 readl(&(tb->HostWrite.CoalIntCount)));
6907 dev_info(dev, " Max outstanding commands = %d\n",
6908 readl(&(tb->CmdsOutMax)));
6909 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
6910 for (i = 0; i < 16; i++)
6911 temp_name[i] = readb(&(tb->ServerName[i]));
6912 temp_name[16] = '\0';
6913 dev_info(dev, " Server Name = %s\n", temp_name);
6914 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
6915 readl(&(tb->HeartBeat)));
6916 #endif /* HPSA_DEBUG */
6919 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
6921 int i, offset, mem_type, bar_type;
6923 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
6926 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
6927 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
6928 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
6931 mem_type = pci_resource_flags(pdev, i) &
6932 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
6934 case PCI_BASE_ADDRESS_MEM_TYPE_32:
6935 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
6936 offset += 4; /* 32 bit */
6938 case PCI_BASE_ADDRESS_MEM_TYPE_64:
6941 default: /* reserved in PCI 2.2 */
6942 dev_warn(&pdev->dev,
6943 "base address is invalid\n");
6948 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
6954 static void hpsa_disable_interrupt_mode(struct ctlr_info *h)
6956 if (h->msix_vector) {
6957 if (h->pdev->msix_enabled)
6958 pci_disable_msix(h->pdev);
6960 } else if (h->msi_vector) {
6961 if (h->pdev->msi_enabled)
6962 pci_disable_msi(h->pdev);
6967 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
6968 * controllers that are capable. If not, we use legacy INTx mode.
6970 static void hpsa_interrupt_mode(struct ctlr_info *h)
6972 #ifdef CONFIG_PCI_MSI
6974 struct msix_entry hpsa_msix_entries[MAX_REPLY_QUEUES];
6976 for (i = 0; i < MAX_REPLY_QUEUES; i++) {
6977 hpsa_msix_entries[i].vector = 0;
6978 hpsa_msix_entries[i].entry = i;
6981 /* Some boards advertise MSI but don't really support it */
6982 if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||
6983 (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))
6984 goto default_int_mode;
6985 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
6986 dev_info(&h->pdev->dev, "MSI-X capable controller\n");
6987 h->msix_vector = MAX_REPLY_QUEUES;
6988 if (h->msix_vector > num_online_cpus())
6989 h->msix_vector = num_online_cpus();
6990 err = pci_enable_msix_range(h->pdev, hpsa_msix_entries,
6993 dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", err);
6995 goto single_msi_mode;
6996 } else if (err < h->msix_vector) {
6997 dev_warn(&h->pdev->dev, "only %d MSI-X vectors "
6998 "available\n", err);
7000 h->msix_vector = err;
7001 for (i = 0; i < h->msix_vector; i++)
7002 h->intr[i] = hpsa_msix_entries[i].vector;
7006 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
7007 dev_info(&h->pdev->dev, "MSI capable controller\n");
7008 if (!pci_enable_msi(h->pdev))
7011 dev_warn(&h->pdev->dev, "MSI init failed\n");
7014 #endif /* CONFIG_PCI_MSI */
7015 /* if we get here we're going to use the default interrupt mode */
7016 h->intr[h->intr_mode] = h->pdev->irq;
7019 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
7022 u32 subsystem_vendor_id, subsystem_device_id;
7024 subsystem_vendor_id = pdev->subsystem_vendor;
7025 subsystem_device_id = pdev->subsystem_device;
7026 *board_id = ((subsystem_device_id << 16) & 0xffff0000) |
7027 subsystem_vendor_id;
7029 for (i = 0; i < ARRAY_SIZE(products); i++)
7030 if (*board_id == products[i].board_id)
7033 if ((subsystem_vendor_id != PCI_VENDOR_ID_HP &&
7034 subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) ||
7036 dev_warn(&pdev->dev, "unrecognized board ID: "
7037 "0x%08x, ignoring.\n", *board_id);
7040 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
7043 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
7044 unsigned long *memory_bar)
7048 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
7049 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
7050 /* addressing mode bits already removed */
7051 *memory_bar = pci_resource_start(pdev, i);
7052 dev_dbg(&pdev->dev, "memory BAR = %lx\n",
7056 dev_warn(&pdev->dev, "no memory BAR found\n");
7060 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
7066 iterations = HPSA_BOARD_READY_ITERATIONS;
7068 iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
7070 for (i = 0; i < iterations; i++) {
7071 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
7072 if (wait_for_ready) {
7073 if (scratchpad == HPSA_FIRMWARE_READY)
7076 if (scratchpad != HPSA_FIRMWARE_READY)
7079 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
7081 dev_warn(&pdev->dev, "board not ready, timed out.\n");
7085 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
7086 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
7089 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
7090 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
7091 *cfg_base_addr &= (u32) 0x0000ffff;
7092 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
7093 if (*cfg_base_addr_index == -1) {
7094 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
7100 static void hpsa_free_cfgtables(struct ctlr_info *h)
7102 if (h->transtable) {
7103 iounmap(h->transtable);
7104 h->transtable = NULL;
7107 iounmap(h->cfgtable);
7112 /* Find and map CISS config table and transfer table
7113 + * several items must be unmapped (freed) later
7115 static int hpsa_find_cfgtables(struct ctlr_info *h)
7119 u64 cfg_base_addr_index;
7123 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
7124 &cfg_base_addr_index, &cfg_offset);
7127 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
7128 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
7130 dev_err(&h->pdev->dev, "Failed mapping cfgtable\n");
7133 rc = write_driver_ver_to_cfgtable(h->cfgtable);
7136 /* Find performant mode table. */
7137 trans_offset = readl(&h->cfgtable->TransMethodOffset);
7138 h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
7139 cfg_base_addr_index)+cfg_offset+trans_offset,
7140 sizeof(*h->transtable));
7141 if (!h->transtable) {
7142 dev_err(&h->pdev->dev, "Failed mapping transfer table\n");
7143 hpsa_free_cfgtables(h);
7149 static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
7151 #define MIN_MAX_COMMANDS 16
7152 BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS);
7154 h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands);
7156 /* Limit commands in memory limited kdump scenario. */
7157 if (reset_devices && h->max_commands > 32)
7158 h->max_commands = 32;
7160 if (h->max_commands < MIN_MAX_COMMANDS) {
7161 dev_warn(&h->pdev->dev,
7162 "Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n",
7165 h->max_commands = MIN_MAX_COMMANDS;
7169 /* If the controller reports that the total max sg entries is greater than 512,
7170 * then we know that chained SG blocks work. (Original smart arrays did not
7171 * support chained SG blocks and would return zero for max sg entries.)
7173 static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h)
7175 return h->maxsgentries > 512;
7178 /* Interrogate the hardware for some limits:
7179 * max commands, max SG elements without chaining, and with chaining,
7180 * SG chain block size, etc.
7182 static void hpsa_find_board_params(struct ctlr_info *h)
7184 hpsa_get_max_perf_mode_cmds(h);
7185 h->nr_cmds = h->max_commands;
7186 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
7187 h->fw_support = readl(&(h->cfgtable->misc_fw_support));
7188 if (hpsa_supports_chained_sg_blocks(h)) {
7189 /* Limit in-command s/g elements to 32 save dma'able memory. */
7190 h->max_cmd_sg_entries = 32;
7191 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries;
7192 h->maxsgentries--; /* save one for chain pointer */
7195 * Original smart arrays supported at most 31 s/g entries
7196 * embedded inline in the command (trying to use more
7197 * would lock up the controller)
7199 h->max_cmd_sg_entries = 31;
7200 h->maxsgentries = 31; /* default to traditional values */
7204 /* Find out what task management functions are supported and cache */
7205 h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags));
7206 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags))
7207 dev_warn(&h->pdev->dev, "Physical aborts not supported\n");
7208 if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
7209 dev_warn(&h->pdev->dev, "Logical aborts not supported\n");
7210 if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags))
7211 dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n");
7214 static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
7216 if (!check_signature(h->cfgtable->Signature, "CISS", 4)) {
7217 dev_err(&h->pdev->dev, "not a valid CISS config table\n");
7223 static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
7227 driver_support = readl(&(h->cfgtable->driver_support));
7228 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
7230 driver_support |= ENABLE_SCSI_PREFETCH;
7232 driver_support |= ENABLE_UNIT_ATTN;
7233 writel(driver_support, &(h->cfgtable->driver_support));
7236 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
7237 * in a prefetch beyond physical memory.
7239 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
7243 if (h->board_id != 0x3225103C)
7245 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
7246 dma_prefetch |= 0x8000;
7247 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
7250 static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h)
7254 unsigned long flags;
7255 /* wait until the clear_event_notify bit 6 is cleared by controller. */
7256 for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) {
7257 spin_lock_irqsave(&h->lock, flags);
7258 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7259 spin_unlock_irqrestore(&h->lock, flags);
7260 if (!(doorbell_value & DOORBELL_CLEAR_EVENTS))
7262 /* delay and try again */
7263 msleep(CLEAR_EVENT_WAIT_INTERVAL);
7270 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
7274 unsigned long flags;
7276 /* under certain very rare conditions, this can take awhile.
7277 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
7278 * as we enter this code.)
7280 for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) {
7281 if (h->remove_in_progress)
7283 spin_lock_irqsave(&h->lock, flags);
7284 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7285 spin_unlock_irqrestore(&h->lock, flags);
7286 if (!(doorbell_value & CFGTBL_ChangeReq))
7288 /* delay and try again */
7289 msleep(MODE_CHANGE_WAIT_INTERVAL);
7296 /* return -ENODEV or other reason on error, 0 on success */
7297 static int hpsa_enter_simple_mode(struct ctlr_info *h)
7301 trans_support = readl(&(h->cfgtable->TransportSupport));
7302 if (!(trans_support & SIMPLE_MODE))
7305 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
7307 /* Update the field, and then ring the doorbell */
7308 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
7309 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
7310 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
7311 if (hpsa_wait_for_mode_change_ack(h))
7313 print_cfg_table(&h->pdev->dev, h->cfgtable);
7314 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
7316 h->transMethod = CFGTBL_Trans_Simple;
7319 dev_err(&h->pdev->dev, "failed to enter simple mode\n");
7323 /* free items allocated or mapped by hpsa_pci_init */
7324 static void hpsa_free_pci_init(struct ctlr_info *h)
7326 hpsa_free_cfgtables(h); /* pci_init 4 */
7327 iounmap(h->vaddr); /* pci_init 3 */
7329 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
7331 * call pci_disable_device before pci_release_regions per
7332 * Documentation/PCI/pci.txt
7334 pci_disable_device(h->pdev); /* pci_init 1 */
7335 pci_release_regions(h->pdev); /* pci_init 2 */
7338 /* several items must be freed later */
7339 static int hpsa_pci_init(struct ctlr_info *h)
7341 int prod_index, err;
7343 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id);
7346 h->product_name = products[prod_index].product_name;
7347 h->access = *(products[prod_index].access);
7349 h->needs_abort_tags_swizzled =
7350 ctlr_needs_abort_tags_swizzled(h->board_id);
7352 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
7353 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
7355 err = pci_enable_device(h->pdev);
7357 dev_err(&h->pdev->dev, "failed to enable PCI device\n");
7358 pci_disable_device(h->pdev);
7362 err = pci_request_regions(h->pdev, HPSA);
7364 dev_err(&h->pdev->dev,
7365 "failed to obtain PCI resources\n");
7366 pci_disable_device(h->pdev);
7370 pci_set_master(h->pdev);
7372 hpsa_interrupt_mode(h);
7373 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
7375 goto clean2; /* intmode+region, pci */
7376 h->vaddr = remap_pci_mem(h->paddr, 0x250);
7378 dev_err(&h->pdev->dev, "failed to remap PCI mem\n");
7380 goto clean2; /* intmode+region, pci */
7382 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
7384 goto clean3; /* vaddr, intmode+region, pci */
7385 err = hpsa_find_cfgtables(h);
7387 goto clean3; /* vaddr, intmode+region, pci */
7388 hpsa_find_board_params(h);
7390 if (!hpsa_CISS_signature_present(h)) {
7392 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7394 hpsa_set_driver_support_bits(h);
7395 hpsa_p600_dma_prefetch_quirk(h);
7396 err = hpsa_enter_simple_mode(h);
7398 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7401 clean4: /* cfgtables, vaddr, intmode+region, pci */
7402 hpsa_free_cfgtables(h);
7403 clean3: /* vaddr, intmode+region, pci */
7406 clean2: /* intmode+region, pci */
7407 hpsa_disable_interrupt_mode(h);
7409 * call pci_disable_device before pci_release_regions per
7410 * Documentation/PCI/pci.txt
7412 pci_disable_device(h->pdev);
7413 pci_release_regions(h->pdev);
7417 static void hpsa_hba_inquiry(struct ctlr_info *h)
7421 #define HBA_INQUIRY_BYTE_COUNT 64
7422 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
7423 if (!h->hba_inquiry_data)
7425 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
7426 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
7428 kfree(h->hba_inquiry_data);
7429 h->hba_inquiry_data = NULL;
7433 static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id)
7436 void __iomem *vaddr;
7441 /* kdump kernel is loading, we don't know in which state is
7442 * the pci interface. The dev->enable_cnt is equal zero
7443 * so we call enable+disable, wait a while and switch it on.
7445 rc = pci_enable_device(pdev);
7447 dev_warn(&pdev->dev, "Failed to enable PCI device\n");
7450 pci_disable_device(pdev);
7451 msleep(260); /* a randomly chosen number */
7452 rc = pci_enable_device(pdev);
7454 dev_warn(&pdev->dev, "failed to enable device.\n");
7458 pci_set_master(pdev);
7460 vaddr = pci_ioremap_bar(pdev, 0);
7461 if (vaddr == NULL) {
7465 writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET);
7468 /* Reset the controller with a PCI power-cycle or via doorbell */
7469 rc = hpsa_kdump_hard_reset_controller(pdev, board_id);
7471 /* -ENOTSUPP here means we cannot reset the controller
7472 * but it's already (and still) up and running in
7473 * "performant mode". Or, it might be 640x, which can't reset
7474 * due to concerns about shared bbwc between 6402/6404 pair.
7479 /* Now try to get the controller to respond to a no-op */
7480 dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n");
7481 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
7482 if (hpsa_noop(pdev) == 0)
7485 dev_warn(&pdev->dev, "no-op failed%s\n",
7486 (i < 11 ? "; re-trying" : ""));
7491 pci_disable_device(pdev);
7495 static void hpsa_free_cmd_pool(struct ctlr_info *h)
7497 kfree(h->cmd_pool_bits);
7498 h->cmd_pool_bits = NULL;
7500 pci_free_consistent(h->pdev,
7501 h->nr_cmds * sizeof(struct CommandList),
7503 h->cmd_pool_dhandle);
7505 h->cmd_pool_dhandle = 0;
7507 if (h->errinfo_pool) {
7508 pci_free_consistent(h->pdev,
7509 h->nr_cmds * sizeof(struct ErrorInfo),
7511 h->errinfo_pool_dhandle);
7512 h->errinfo_pool = NULL;
7513 h->errinfo_pool_dhandle = 0;
7517 static int hpsa_alloc_cmd_pool(struct ctlr_info *h)
7519 h->cmd_pool_bits = kzalloc(
7520 DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) *
7521 sizeof(unsigned long), GFP_KERNEL);
7522 h->cmd_pool = pci_alloc_consistent(h->pdev,
7523 h->nr_cmds * sizeof(*h->cmd_pool),
7524 &(h->cmd_pool_dhandle));
7525 h->errinfo_pool = pci_alloc_consistent(h->pdev,
7526 h->nr_cmds * sizeof(*h->errinfo_pool),
7527 &(h->errinfo_pool_dhandle));
7528 if ((h->cmd_pool_bits == NULL)
7529 || (h->cmd_pool == NULL)
7530 || (h->errinfo_pool == NULL)) {
7531 dev_err(&h->pdev->dev, "out of memory in %s", __func__);
7534 hpsa_preinitialize_commands(h);
7537 hpsa_free_cmd_pool(h);
7541 static void hpsa_irq_affinity_hints(struct ctlr_info *h)
7545 cpu = cpumask_first(cpu_online_mask);
7546 for (i = 0; i < h->msix_vector; i++) {
7547 irq_set_affinity_hint(h->intr[i], get_cpu_mask(cpu));
7548 cpu = cpumask_next(cpu, cpu_online_mask);
7552 /* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */
7553 static void hpsa_free_irqs(struct ctlr_info *h)
7557 if (!h->msix_vector || h->intr_mode != PERF_MODE_INT) {
7558 /* Single reply queue, only one irq to free */
7560 irq_set_affinity_hint(h->intr[i], NULL);
7561 free_irq(h->intr[i], &h->q[i]);
7566 for (i = 0; i < h->msix_vector; i++) {
7567 irq_set_affinity_hint(h->intr[i], NULL);
7568 free_irq(h->intr[i], &h->q[i]);
7571 for (; i < MAX_REPLY_QUEUES; i++)
7575 /* returns 0 on success; cleans up and returns -Enn on error */
7576 static int hpsa_request_irqs(struct ctlr_info *h,
7577 irqreturn_t (*msixhandler)(int, void *),
7578 irqreturn_t (*intxhandler)(int, void *))
7583 * initialize h->q[x] = x so that interrupt handlers know which
7586 for (i = 0; i < MAX_REPLY_QUEUES; i++)
7589 if (h->intr_mode == PERF_MODE_INT && h->msix_vector > 0) {
7590 /* If performant mode and MSI-X, use multiple reply queues */
7591 for (i = 0; i < h->msix_vector; i++) {
7592 sprintf(h->intrname[i], "%s-msix%d", h->devname, i);
7593 rc = request_irq(h->intr[i], msixhandler,
7599 dev_err(&h->pdev->dev,
7600 "failed to get irq %d for %s\n",
7601 h->intr[i], h->devname);
7602 for (j = 0; j < i; j++) {
7603 free_irq(h->intr[j], &h->q[j]);
7606 for (; j < MAX_REPLY_QUEUES; j++)
7611 hpsa_irq_affinity_hints(h);
7613 /* Use single reply pool */
7614 if (h->msix_vector > 0 || h->msi_vector) {
7616 sprintf(h->intrname[h->intr_mode],
7617 "%s-msix", h->devname);
7619 sprintf(h->intrname[h->intr_mode],
7620 "%s-msi", h->devname);
7621 rc = request_irq(h->intr[h->intr_mode],
7623 h->intrname[h->intr_mode],
7624 &h->q[h->intr_mode]);
7626 sprintf(h->intrname[h->intr_mode],
7627 "%s-intx", h->devname);
7628 rc = request_irq(h->intr[h->intr_mode],
7629 intxhandler, IRQF_SHARED,
7630 h->intrname[h->intr_mode],
7631 &h->q[h->intr_mode]);
7633 irq_set_affinity_hint(h->intr[h->intr_mode], NULL);
7636 dev_err(&h->pdev->dev, "failed to get irq %d for %s\n",
7637 h->intr[h->intr_mode], h->devname);
7644 static int hpsa_kdump_soft_reset(struct ctlr_info *h)
7647 hpsa_send_host_reset(h, RAID_CTLR_LUNID, HPSA_RESET_TYPE_CONTROLLER);
7649 dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n");
7650 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY);
7652 dev_warn(&h->pdev->dev, "Soft reset had no effect.\n");
7656 dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n");
7657 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
7659 dev_warn(&h->pdev->dev, "Board failed to become ready "
7660 "after soft reset.\n");
7667 static void hpsa_free_reply_queues(struct ctlr_info *h)
7671 for (i = 0; i < h->nreply_queues; i++) {
7672 if (!h->reply_queue[i].head)
7674 pci_free_consistent(h->pdev,
7675 h->reply_queue_size,
7676 h->reply_queue[i].head,
7677 h->reply_queue[i].busaddr);
7678 h->reply_queue[i].head = NULL;
7679 h->reply_queue[i].busaddr = 0;
7681 h->reply_queue_size = 0;
7684 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h)
7686 hpsa_free_performant_mode(h); /* init_one 7 */
7687 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
7688 hpsa_free_cmd_pool(h); /* init_one 5 */
7689 hpsa_free_irqs(h); /* init_one 4 */
7690 scsi_host_put(h->scsi_host); /* init_one 3 */
7691 h->scsi_host = NULL; /* init_one 3 */
7692 hpsa_free_pci_init(h); /* init_one 2_5 */
7693 free_percpu(h->lockup_detected); /* init_one 2 */
7694 h->lockup_detected = NULL; /* init_one 2 */
7695 if (h->resubmit_wq) {
7696 destroy_workqueue(h->resubmit_wq); /* init_one 1 */
7697 h->resubmit_wq = NULL;
7699 if (h->rescan_ctlr_wq) {
7700 destroy_workqueue(h->rescan_ctlr_wq);
7701 h->rescan_ctlr_wq = NULL;
7703 kfree(h); /* init_one 1 */
7706 /* Called when controller lockup detected. */
7707 static void fail_all_outstanding_cmds(struct ctlr_info *h)
7710 struct CommandList *c;
7713 flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */
7714 for (i = 0; i < h->nr_cmds; i++) {
7715 c = h->cmd_pool + i;
7716 refcount = atomic_inc_return(&c->refcount);
7718 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
7720 atomic_dec(&h->commands_outstanding);
7725 dev_warn(&h->pdev->dev,
7726 "failed %d commands in fail_all\n", failcount);
7729 static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value)
7733 for_each_online_cpu(cpu) {
7734 u32 *lockup_detected;
7735 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
7736 *lockup_detected = value;
7738 wmb(); /* be sure the per-cpu variables are out to memory */
7741 static void controller_lockup_detected(struct ctlr_info *h)
7743 unsigned long flags;
7744 u32 lockup_detected;
7746 h->access.set_intr_mask(h, HPSA_INTR_OFF);
7747 spin_lock_irqsave(&h->lock, flags);
7748 lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
7749 if (!lockup_detected) {
7750 /* no heartbeat, but controller gave us a zero. */
7751 dev_warn(&h->pdev->dev,
7752 "lockup detected after %d but scratchpad register is zero\n",
7753 h->heartbeat_sample_interval / HZ);
7754 lockup_detected = 0xffffffff;
7756 set_lockup_detected_for_all_cpus(h, lockup_detected);
7757 spin_unlock_irqrestore(&h->lock, flags);
7758 dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n",
7759 lockup_detected, h->heartbeat_sample_interval / HZ);
7760 pci_disable_device(h->pdev);
7761 fail_all_outstanding_cmds(h);
7764 static int detect_controller_lockup(struct ctlr_info *h)
7768 unsigned long flags;
7770 now = get_jiffies_64();
7771 /* If we've received an interrupt recently, we're ok. */
7772 if (time_after64(h->last_intr_timestamp +
7773 (h->heartbeat_sample_interval), now))
7777 * If we've already checked the heartbeat recently, we're ok.
7778 * This could happen if someone sends us a signal. We
7779 * otherwise don't care about signals in this thread.
7781 if (time_after64(h->last_heartbeat_timestamp +
7782 (h->heartbeat_sample_interval), now))
7785 /* If heartbeat has not changed since we last looked, we're not ok. */
7786 spin_lock_irqsave(&h->lock, flags);
7787 heartbeat = readl(&h->cfgtable->HeartBeat);
7788 spin_unlock_irqrestore(&h->lock, flags);
7789 if (h->last_heartbeat == heartbeat) {
7790 controller_lockup_detected(h);
7795 h->last_heartbeat = heartbeat;
7796 h->last_heartbeat_timestamp = now;
7800 static void hpsa_ack_ctlr_events(struct ctlr_info *h)
7805 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
7808 /* Ask the controller to clear the events we're handling. */
7809 if ((h->transMethod & (CFGTBL_Trans_io_accel1
7810 | CFGTBL_Trans_io_accel2)) &&
7811 (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE ||
7812 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) {
7814 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE)
7815 event_type = "state change";
7816 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)
7817 event_type = "configuration change";
7818 /* Stop sending new RAID offload reqs via the IO accelerator */
7819 scsi_block_requests(h->scsi_host);
7820 for (i = 0; i < h->ndevices; i++)
7821 h->dev[i]->offload_enabled = 0;
7822 hpsa_drain_accel_commands(h);
7823 /* Set 'accelerator path config change' bit */
7824 dev_warn(&h->pdev->dev,
7825 "Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n",
7826 h->events, event_type);
7827 writel(h->events, &(h->cfgtable->clear_event_notify));
7828 /* Set the "clear event notify field update" bit 6 */
7829 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
7830 /* Wait until ctlr clears 'clear event notify field', bit 6 */
7831 hpsa_wait_for_clear_event_notify_ack(h);
7832 scsi_unblock_requests(h->scsi_host);
7834 /* Acknowledge controller notification events. */
7835 writel(h->events, &(h->cfgtable->clear_event_notify));
7836 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
7837 hpsa_wait_for_clear_event_notify_ack(h);
7839 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
7840 hpsa_wait_for_mode_change_ack(h);
7846 /* Check a register on the controller to see if there are configuration
7847 * changes (added/changed/removed logical drives, etc.) which mean that
7848 * we should rescan the controller for devices.
7849 * Also check flag for driver-initiated rescan.
7851 static int hpsa_ctlr_needs_rescan(struct ctlr_info *h)
7853 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
7856 h->events = readl(&(h->cfgtable->event_notify));
7857 return h->events & RESCAN_REQUIRED_EVENT_BITS;
7861 * Check if any of the offline devices have become ready
7863 static int hpsa_offline_devices_ready(struct ctlr_info *h)
7865 unsigned long flags;
7866 struct offline_device_entry *d;
7867 struct list_head *this, *tmp;
7869 spin_lock_irqsave(&h->offline_device_lock, flags);
7870 list_for_each_safe(this, tmp, &h->offline_device_list) {
7871 d = list_entry(this, struct offline_device_entry,
7873 spin_unlock_irqrestore(&h->offline_device_lock, flags);
7874 if (!hpsa_volume_offline(h, d->scsi3addr)) {
7875 spin_lock_irqsave(&h->offline_device_lock, flags);
7876 list_del(&d->offline_list);
7877 spin_unlock_irqrestore(&h->offline_device_lock, flags);
7880 spin_lock_irqsave(&h->offline_device_lock, flags);
7882 spin_unlock_irqrestore(&h->offline_device_lock, flags);
7886 static void hpsa_rescan_ctlr_worker(struct work_struct *work)
7888 unsigned long flags;
7889 struct ctlr_info *h = container_of(to_delayed_work(work),
7890 struct ctlr_info, rescan_ctlr_work);
7893 if (h->remove_in_progress)
7896 if (hpsa_ctlr_needs_rescan(h) || hpsa_offline_devices_ready(h)) {
7897 scsi_host_get(h->scsi_host);
7898 hpsa_ack_ctlr_events(h);
7899 hpsa_scan_start(h->scsi_host);
7900 scsi_host_put(h->scsi_host);
7902 spin_lock_irqsave(&h->lock, flags);
7903 if (!h->remove_in_progress)
7904 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
7905 h->heartbeat_sample_interval);
7906 spin_unlock_irqrestore(&h->lock, flags);
7909 static void hpsa_monitor_ctlr_worker(struct work_struct *work)
7911 unsigned long flags;
7912 struct ctlr_info *h = container_of(to_delayed_work(work),
7913 struct ctlr_info, monitor_ctlr_work);
7915 detect_controller_lockup(h);
7916 if (lockup_detected(h))
7919 spin_lock_irqsave(&h->lock, flags);
7920 if (!h->remove_in_progress)
7921 schedule_delayed_work(&h->monitor_ctlr_work,
7922 h->heartbeat_sample_interval);
7923 spin_unlock_irqrestore(&h->lock, flags);
7926 static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h,
7929 struct workqueue_struct *wq = NULL;
7931 wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr);
7933 dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name);
7938 static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
7941 struct ctlr_info *h;
7942 int try_soft_reset = 0;
7943 unsigned long flags;
7946 if (number_of_controllers == 0)
7947 printk(KERN_INFO DRIVER_NAME "\n");
7949 rc = hpsa_lookup_board_id(pdev, &board_id);
7951 dev_warn(&pdev->dev, "Board ID not found\n");
7955 rc = hpsa_init_reset_devices(pdev, board_id);
7957 if (rc != -ENOTSUPP)
7959 /* If the reset fails in a particular way (it has no way to do
7960 * a proper hard reset, so returns -ENOTSUPP) we can try to do
7961 * a soft reset once we get the controller configured up to the
7962 * point that it can accept a command.
7968 reinit_after_soft_reset:
7970 /* Command structures must be aligned on a 32-byte boundary because
7971 * the 5 lower bits of the address are used by the hardware. and by
7972 * the driver. See comments in hpsa.h for more info.
7974 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
7975 h = kzalloc(sizeof(*h), GFP_KERNEL);
7977 dev_err(&pdev->dev, "Failed to allocate controller head\n");
7983 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
7984 INIT_LIST_HEAD(&h->offline_device_list);
7985 spin_lock_init(&h->lock);
7986 spin_lock_init(&h->offline_device_lock);
7987 spin_lock_init(&h->scan_lock);
7988 atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS);
7989 atomic_set(&h->abort_cmds_available, HPSA_CMDS_RESERVED_FOR_ABORTS);
7991 /* Allocate and clear per-cpu variable lockup_detected */
7992 h->lockup_detected = alloc_percpu(u32);
7993 if (!h->lockup_detected) {
7994 dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n");
7996 goto clean1; /* aer/h */
7998 set_lockup_detected_for_all_cpus(h, 0);
8000 rc = hpsa_pci_init(h);
8002 goto clean2; /* lu, aer/h */
8004 /* relies on h-> settings made by hpsa_pci_init, including
8005 * interrupt_mode h->intr */
8006 rc = hpsa_scsi_host_alloc(h);
8008 goto clean2_5; /* pci, lu, aer/h */
8010 sprintf(h->devname, HPSA "%d", h->scsi_host->host_no);
8011 h->ctlr = number_of_controllers;
8012 number_of_controllers++;
8014 /* configure PCI DMA stuff */
8015 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8019 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8023 dev_err(&pdev->dev, "no suitable DMA available\n");
8024 goto clean3; /* shost, pci, lu, aer/h */
8028 /* make sure the board interrupts are off */
8029 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8031 rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx);
8033 goto clean3; /* shost, pci, lu, aer/h */
8034 rc = hpsa_alloc_cmd_pool(h);
8036 goto clean4; /* irq, shost, pci, lu, aer/h */
8037 rc = hpsa_alloc_sg_chain_blocks(h);
8039 goto clean5; /* cmd, irq, shost, pci, lu, aer/h */
8040 init_waitqueue_head(&h->scan_wait_queue);
8041 init_waitqueue_head(&h->abort_cmd_wait_queue);
8042 init_waitqueue_head(&h->event_sync_wait_queue);
8043 mutex_init(&h->reset_mutex);
8044 h->scan_finished = 1; /* no scan currently in progress */
8046 pci_set_drvdata(pdev, h);
8049 spin_lock_init(&h->devlock);
8050 rc = hpsa_put_ctlr_into_performant_mode(h);
8052 goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */
8054 /* hook into SCSI subsystem */
8055 rc = hpsa_scsi_add_host(h);
8057 goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8059 /* create the resubmit workqueue */
8060 h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan");
8061 if (!h->rescan_ctlr_wq) {
8066 h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit");
8067 if (!h->resubmit_wq) {
8069 goto clean7; /* aer/h */
8073 * At this point, the controller is ready to take commands.
8074 * Now, if reset_devices and the hard reset didn't work, try
8075 * the soft reset and see if that works.
8077 if (try_soft_reset) {
8079 /* This is kind of gross. We may or may not get a completion
8080 * from the soft reset command, and if we do, then the value
8081 * from the fifo may or may not be valid. So, we wait 10 secs
8082 * after the reset throwing away any completions we get during
8083 * that time. Unregister the interrupt handler and register
8084 * fake ones to scoop up any residual completions.
8086 spin_lock_irqsave(&h->lock, flags);
8087 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8088 spin_unlock_irqrestore(&h->lock, flags);
8090 rc = hpsa_request_irqs(h, hpsa_msix_discard_completions,
8091 hpsa_intx_discard_completions);
8093 dev_warn(&h->pdev->dev,
8094 "Failed to request_irq after soft reset.\n");
8096 * cannot goto clean7 or free_irqs will be called
8097 * again. Instead, do its work
8099 hpsa_free_performant_mode(h); /* clean7 */
8100 hpsa_free_sg_chain_blocks(h); /* clean6 */
8101 hpsa_free_cmd_pool(h); /* clean5 */
8103 * skip hpsa_free_irqs(h) clean4 since that
8104 * was just called before request_irqs failed
8109 rc = hpsa_kdump_soft_reset(h);
8111 /* Neither hard nor soft reset worked, we're hosed. */
8114 dev_info(&h->pdev->dev, "Board READY.\n");
8115 dev_info(&h->pdev->dev,
8116 "Waiting for stale completions to drain.\n");
8117 h->access.set_intr_mask(h, HPSA_INTR_ON);
8119 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8121 rc = controller_reset_failed(h->cfgtable);
8123 dev_info(&h->pdev->dev,
8124 "Soft reset appears to have failed.\n");
8126 /* since the controller's reset, we have to go back and re-init
8127 * everything. Easiest to just forget what we've done and do it
8130 hpsa_undo_allocations_after_kdump_soft_reset(h);
8133 /* don't goto clean, we already unallocated */
8136 goto reinit_after_soft_reset;
8139 /* Enable Accelerated IO path at driver layer */
8140 h->acciopath_status = 1;
8143 /* Turn the interrupts on so we can service requests */
8144 h->access.set_intr_mask(h, HPSA_INTR_ON);
8146 hpsa_hba_inquiry(h);
8148 /* Monitor the controller for firmware lockups */
8149 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
8150 INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);
8151 schedule_delayed_work(&h->monitor_ctlr_work,
8152 h->heartbeat_sample_interval);
8153 INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker);
8154 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8155 h->heartbeat_sample_interval);
8158 clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8159 hpsa_free_performant_mode(h);
8160 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8161 clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */
8162 hpsa_free_sg_chain_blocks(h);
8163 clean5: /* cmd, irq, shost, pci, lu, aer/h */
8164 hpsa_free_cmd_pool(h);
8165 clean4: /* irq, shost, pci, lu, aer/h */
8167 clean3: /* shost, pci, lu, aer/h */
8168 scsi_host_put(h->scsi_host);
8169 h->scsi_host = NULL;
8170 clean2_5: /* pci, lu, aer/h */
8171 hpsa_free_pci_init(h);
8172 clean2: /* lu, aer/h */
8173 if (h->lockup_detected) {
8174 free_percpu(h->lockup_detected);
8175 h->lockup_detected = NULL;
8177 clean1: /* wq/aer/h */
8178 if (h->resubmit_wq) {
8179 destroy_workqueue(h->resubmit_wq);
8180 h->resubmit_wq = NULL;
8182 if (h->rescan_ctlr_wq) {
8183 destroy_workqueue(h->rescan_ctlr_wq);
8184 h->rescan_ctlr_wq = NULL;
8190 static void hpsa_flush_cache(struct ctlr_info *h)
8193 struct CommandList *c;
8196 if (unlikely(lockup_detected(h)))
8198 flush_buf = kzalloc(4, GFP_KERNEL);
8204 if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
8205 RAID_CTLR_LUNID, TYPE_CMD)) {
8208 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
8209 PCI_DMA_TODEVICE, NO_TIMEOUT);
8212 if (c->err_info->CommandStatus != 0)
8214 dev_warn(&h->pdev->dev,
8215 "error flushing cache on controller\n");
8220 static void hpsa_shutdown(struct pci_dev *pdev)
8222 struct ctlr_info *h;
8224 h = pci_get_drvdata(pdev);
8225 /* Turn board interrupts off and send the flush cache command
8226 * sendcmd will turn off interrupt, and send the flush...
8227 * To write all data in the battery backed cache to disks
8229 hpsa_flush_cache(h);
8230 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8231 hpsa_free_irqs(h); /* init_one 4 */
8232 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
8235 static void hpsa_free_device_info(struct ctlr_info *h)
8239 for (i = 0; i < h->ndevices; i++) {
8245 static void hpsa_remove_one(struct pci_dev *pdev)
8247 struct ctlr_info *h;
8248 unsigned long flags;
8250 if (pci_get_drvdata(pdev) == NULL) {
8251 dev_err(&pdev->dev, "unable to remove device\n");
8254 h = pci_get_drvdata(pdev);
8256 /* Get rid of any controller monitoring work items */
8257 spin_lock_irqsave(&h->lock, flags);
8258 h->remove_in_progress = 1;
8259 spin_unlock_irqrestore(&h->lock, flags);
8260 cancel_delayed_work_sync(&h->monitor_ctlr_work);
8261 cancel_delayed_work_sync(&h->rescan_ctlr_work);
8262 destroy_workqueue(h->rescan_ctlr_wq);
8263 destroy_workqueue(h->resubmit_wq);
8266 * Call before disabling interrupts.
8267 * scsi_remove_host can trigger I/O operations especially
8268 * when multipath is enabled. There can be SYNCHRONIZE CACHE
8269 * operations which cannot complete and will hang the system.
8272 scsi_remove_host(h->scsi_host); /* init_one 8 */
8273 /* includes hpsa_free_irqs - init_one 4 */
8274 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
8275 hpsa_shutdown(pdev);
8277 hpsa_free_device_info(h); /* scan */
8279 kfree(h->hba_inquiry_data); /* init_one 10 */
8280 h->hba_inquiry_data = NULL; /* init_one 10 */
8281 hpsa_free_ioaccel2_sg_chain_blocks(h);
8282 hpsa_free_performant_mode(h); /* init_one 7 */
8283 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
8284 hpsa_free_cmd_pool(h); /* init_one 5 */
8286 /* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */
8288 scsi_host_put(h->scsi_host); /* init_one 3 */
8289 h->scsi_host = NULL; /* init_one 3 */
8291 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
8292 hpsa_free_pci_init(h); /* init_one 2.5 */
8294 free_percpu(h->lockup_detected); /* init_one 2 */
8295 h->lockup_detected = NULL; /* init_one 2 */
8296 /* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */
8297 kfree(h); /* init_one 1 */
8300 static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
8301 __attribute__((unused)) pm_message_t state)
8306 static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
8311 static struct pci_driver hpsa_pci_driver = {
8313 .probe = hpsa_init_one,
8314 .remove = hpsa_remove_one,
8315 .id_table = hpsa_pci_device_id, /* id_table */
8316 .shutdown = hpsa_shutdown,
8317 .suspend = hpsa_suspend,
8318 .resume = hpsa_resume,
8321 /* Fill in bucket_map[], given nsgs (the max number of
8322 * scatter gather elements supported) and bucket[],
8323 * which is an array of 8 integers. The bucket[] array
8324 * contains 8 different DMA transfer sizes (in 16
8325 * byte increments) which the controller uses to fetch
8326 * commands. This function fills in bucket_map[], which
8327 * maps a given number of scatter gather elements to one of
8328 * the 8 DMA transfer sizes. The point of it is to allow the
8329 * controller to only do as much DMA as needed to fetch the
8330 * command, with the DMA transfer size encoded in the lower
8331 * bits of the command address.
8333 static void calc_bucket_map(int bucket[], int num_buckets,
8334 int nsgs, int min_blocks, u32 *bucket_map)
8338 /* Note, bucket_map must have nsgs+1 entries. */
8339 for (i = 0; i <= nsgs; i++) {
8340 /* Compute size of a command with i SG entries */
8341 size = i + min_blocks;
8342 b = num_buckets; /* Assume the biggest bucket */
8343 /* Find the bucket that is just big enough */
8344 for (j = 0; j < num_buckets; j++) {
8345 if (bucket[j] >= size) {
8350 /* for a command with i SG entries, use bucket b. */
8356 * return -ENODEV on err, 0 on success (or no action)
8357 * allocates numerous items that must be freed later
8359 static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
8362 unsigned long register_value;
8363 unsigned long transMethod = CFGTBL_Trans_Performant |
8364 (trans_support & CFGTBL_Trans_use_short_tags) |
8365 CFGTBL_Trans_enable_directed_msix |
8366 (trans_support & (CFGTBL_Trans_io_accel1 |
8367 CFGTBL_Trans_io_accel2));
8368 struct access_method access = SA5_performant_access;
8370 /* This is a bit complicated. There are 8 registers on
8371 * the controller which we write to to tell it 8 different
8372 * sizes of commands which there may be. It's a way of
8373 * reducing the DMA done to fetch each command. Encoded into
8374 * each command's tag are 3 bits which communicate to the controller
8375 * which of the eight sizes that command fits within. The size of
8376 * each command depends on how many scatter gather entries there are.
8377 * Each SG entry requires 16 bytes. The eight registers are programmed
8378 * with the number of 16-byte blocks a command of that size requires.
8379 * The smallest command possible requires 5 such 16 byte blocks.
8380 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
8381 * blocks. Note, this only extends to the SG entries contained
8382 * within the command block, and does not extend to chained blocks
8383 * of SG elements. bft[] contains the eight values we write to
8384 * the registers. They are not evenly distributed, but have more
8385 * sizes for small commands, and fewer sizes for larger commands.
8387 int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4};
8388 #define MIN_IOACCEL2_BFT_ENTRY 5
8389 #define HPSA_IOACCEL2_HEADER_SZ 4
8390 int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12,
8391 13, 14, 15, 16, 17, 18, 19,
8392 HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES};
8393 BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16);
8394 BUILD_BUG_ON(ARRAY_SIZE(bft) != 8);
8395 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) >
8396 16 * MIN_IOACCEL2_BFT_ENTRY);
8397 BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16);
8398 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4);
8399 /* 5 = 1 s/g entry or 4k
8400 * 6 = 2 s/g entry or 8k
8401 * 8 = 4 s/g entry or 16k
8402 * 10 = 6 s/g entry or 24k
8405 /* If the controller supports either ioaccel method then
8406 * we can also use the RAID stack submit path that does not
8407 * perform the superfluous readl() after each command submission.
8409 if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2))
8410 access = SA5_performant_access_no_read;
8412 /* Controller spec: zero out this buffer. */
8413 for (i = 0; i < h->nreply_queues; i++)
8414 memset(h->reply_queue[i].head, 0, h->reply_queue_size);
8416 bft[7] = SG_ENTRIES_IN_CMD + 4;
8417 calc_bucket_map(bft, ARRAY_SIZE(bft),
8418 SG_ENTRIES_IN_CMD, 4, h->blockFetchTable);
8419 for (i = 0; i < 8; i++)
8420 writel(bft[i], &h->transtable->BlockFetch[i]);
8422 /* size of controller ring buffer */
8423 writel(h->max_commands, &h->transtable->RepQSize);
8424 writel(h->nreply_queues, &h->transtable->RepQCount);
8425 writel(0, &h->transtable->RepQCtrAddrLow32);
8426 writel(0, &h->transtable->RepQCtrAddrHigh32);
8428 for (i = 0; i < h->nreply_queues; i++) {
8429 writel(0, &h->transtable->RepQAddr[i].upper);
8430 writel(h->reply_queue[i].busaddr,
8431 &h->transtable->RepQAddr[i].lower);
8434 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
8435 writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest));
8437 * enable outbound interrupt coalescing in accelerator mode;
8439 if (trans_support & CFGTBL_Trans_io_accel1) {
8440 access = SA5_ioaccel_mode1_access;
8441 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
8442 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
8444 if (trans_support & CFGTBL_Trans_io_accel2) {
8445 access = SA5_ioaccel_mode2_access;
8446 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
8447 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
8450 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
8451 if (hpsa_wait_for_mode_change_ack(h)) {
8452 dev_err(&h->pdev->dev,
8453 "performant mode problem - doorbell timeout\n");
8456 register_value = readl(&(h->cfgtable->TransportActive));
8457 if (!(register_value & CFGTBL_Trans_Performant)) {
8458 dev_err(&h->pdev->dev,
8459 "performant mode problem - transport not active\n");
8462 /* Change the access methods to the performant access methods */
8464 h->transMethod = transMethod;
8466 if (!((trans_support & CFGTBL_Trans_io_accel1) ||
8467 (trans_support & CFGTBL_Trans_io_accel2)))
8470 if (trans_support & CFGTBL_Trans_io_accel1) {
8471 /* Set up I/O accelerator mode */
8472 for (i = 0; i < h->nreply_queues; i++) {
8473 writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX);
8474 h->reply_queue[i].current_entry =
8475 readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX);
8477 bft[7] = h->ioaccel_maxsg + 8;
8478 calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8,
8479 h->ioaccel1_blockFetchTable);
8481 /* initialize all reply queue entries to unused */
8482 for (i = 0; i < h->nreply_queues; i++)
8483 memset(h->reply_queue[i].head,
8484 (u8) IOACCEL_MODE1_REPLY_UNUSED,
8485 h->reply_queue_size);
8487 /* set all the constant fields in the accelerator command
8488 * frames once at init time to save CPU cycles later.
8490 for (i = 0; i < h->nr_cmds; i++) {
8491 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i];
8493 cp->function = IOACCEL1_FUNCTION_SCSIIO;
8494 cp->err_info = (u32) (h->errinfo_pool_dhandle +
8495 (i * sizeof(struct ErrorInfo)));
8496 cp->err_info_len = sizeof(struct ErrorInfo);
8497 cp->sgl_offset = IOACCEL1_SGLOFFSET;
8498 cp->host_context_flags =
8499 cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT);
8500 cp->timeout_sec = 0;
8503 cpu_to_le64((i << DIRECT_LOOKUP_SHIFT));
8505 cpu_to_le64(h->ioaccel_cmd_pool_dhandle +
8506 (i * sizeof(struct io_accel1_cmd)));
8508 } else if (trans_support & CFGTBL_Trans_io_accel2) {
8509 u64 cfg_offset, cfg_base_addr_index;
8510 u32 bft2_offset, cfg_base_addr;
8513 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
8514 &cfg_base_addr_index, &cfg_offset);
8515 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64);
8516 bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ;
8517 calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg,
8518 4, h->ioaccel2_blockFetchTable);
8519 bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset);
8520 BUILD_BUG_ON(offsetof(struct CfgTable,
8521 io_accel_request_size_offset) != 0xb8);
8522 h->ioaccel2_bft2_regs =
8523 remap_pci_mem(pci_resource_start(h->pdev,
8524 cfg_base_addr_index) +
8525 cfg_offset + bft2_offset,
8527 sizeof(*h->ioaccel2_bft2_regs));
8528 for (i = 0; i < ARRAY_SIZE(bft2); i++)
8529 writel(bft2[i], &h->ioaccel2_bft2_regs[i]);
8531 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
8532 if (hpsa_wait_for_mode_change_ack(h)) {
8533 dev_err(&h->pdev->dev,
8534 "performant mode problem - enabling ioaccel mode\n");
8540 /* Free ioaccel1 mode command blocks and block fetch table */
8541 static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h)
8543 if (h->ioaccel_cmd_pool) {
8544 pci_free_consistent(h->pdev,
8545 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
8546 h->ioaccel_cmd_pool,
8547 h->ioaccel_cmd_pool_dhandle);
8548 h->ioaccel_cmd_pool = NULL;
8549 h->ioaccel_cmd_pool_dhandle = 0;
8551 kfree(h->ioaccel1_blockFetchTable);
8552 h->ioaccel1_blockFetchTable = NULL;
8555 /* Allocate ioaccel1 mode command blocks and block fetch table */
8556 static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h)
8559 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
8560 if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES)
8561 h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES;
8563 /* Command structures must be aligned on a 128-byte boundary
8564 * because the 7 lower bits of the address are used by the
8567 BUILD_BUG_ON(sizeof(struct io_accel1_cmd) %
8568 IOACCEL1_COMMANDLIST_ALIGNMENT);
8569 h->ioaccel_cmd_pool =
8570 pci_alloc_consistent(h->pdev,
8571 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
8572 &(h->ioaccel_cmd_pool_dhandle));
8574 h->ioaccel1_blockFetchTable =
8575 kmalloc(((h->ioaccel_maxsg + 1) *
8576 sizeof(u32)), GFP_KERNEL);
8578 if ((h->ioaccel_cmd_pool == NULL) ||
8579 (h->ioaccel1_blockFetchTable == NULL))
8582 memset(h->ioaccel_cmd_pool, 0,
8583 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool));
8587 hpsa_free_ioaccel1_cmd_and_bft(h);
8591 /* Free ioaccel2 mode command blocks and block fetch table */
8592 static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h)
8594 hpsa_free_ioaccel2_sg_chain_blocks(h);
8596 if (h->ioaccel2_cmd_pool) {
8597 pci_free_consistent(h->pdev,
8598 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
8599 h->ioaccel2_cmd_pool,
8600 h->ioaccel2_cmd_pool_dhandle);
8601 h->ioaccel2_cmd_pool = NULL;
8602 h->ioaccel2_cmd_pool_dhandle = 0;
8604 kfree(h->ioaccel2_blockFetchTable);
8605 h->ioaccel2_blockFetchTable = NULL;
8608 /* Allocate ioaccel2 mode command blocks and block fetch table */
8609 static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h)
8613 /* Allocate ioaccel2 mode command blocks and block fetch table */
8616 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
8617 if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES)
8618 h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES;
8620 BUILD_BUG_ON(sizeof(struct io_accel2_cmd) %
8621 IOACCEL2_COMMANDLIST_ALIGNMENT);
8622 h->ioaccel2_cmd_pool =
8623 pci_alloc_consistent(h->pdev,
8624 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
8625 &(h->ioaccel2_cmd_pool_dhandle));
8627 h->ioaccel2_blockFetchTable =
8628 kmalloc(((h->ioaccel_maxsg + 1) *
8629 sizeof(u32)), GFP_KERNEL);
8631 if ((h->ioaccel2_cmd_pool == NULL) ||
8632 (h->ioaccel2_blockFetchTable == NULL)) {
8637 rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h);
8641 memset(h->ioaccel2_cmd_pool, 0,
8642 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool));
8646 hpsa_free_ioaccel2_cmd_and_bft(h);
8650 /* Free items allocated by hpsa_put_ctlr_into_performant_mode */
8651 static void hpsa_free_performant_mode(struct ctlr_info *h)
8653 kfree(h->blockFetchTable);
8654 h->blockFetchTable = NULL;
8655 hpsa_free_reply_queues(h);
8656 hpsa_free_ioaccel1_cmd_and_bft(h);
8657 hpsa_free_ioaccel2_cmd_and_bft(h);
8660 /* return -ENODEV on error, 0 on success (or no action)
8661 * allocates numerous items that must be freed later
8663 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
8666 unsigned long transMethod = CFGTBL_Trans_Performant |
8667 CFGTBL_Trans_use_short_tags;
8670 if (hpsa_simple_mode)
8673 trans_support = readl(&(h->cfgtable->TransportSupport));
8674 if (!(trans_support & PERFORMANT_MODE))
8677 /* Check for I/O accelerator mode support */
8678 if (trans_support & CFGTBL_Trans_io_accel1) {
8679 transMethod |= CFGTBL_Trans_io_accel1 |
8680 CFGTBL_Trans_enable_directed_msix;
8681 rc = hpsa_alloc_ioaccel1_cmd_and_bft(h);
8684 } else if (trans_support & CFGTBL_Trans_io_accel2) {
8685 transMethod |= CFGTBL_Trans_io_accel2 |
8686 CFGTBL_Trans_enable_directed_msix;
8687 rc = hpsa_alloc_ioaccel2_cmd_and_bft(h);
8692 h->nreply_queues = h->msix_vector > 0 ? h->msix_vector : 1;
8693 hpsa_get_max_perf_mode_cmds(h);
8694 /* Performant mode ring buffer and supporting data structures */
8695 h->reply_queue_size = h->max_commands * sizeof(u64);
8697 for (i = 0; i < h->nreply_queues; i++) {
8698 h->reply_queue[i].head = pci_alloc_consistent(h->pdev,
8699 h->reply_queue_size,
8700 &(h->reply_queue[i].busaddr));
8701 if (!h->reply_queue[i].head) {
8703 goto clean1; /* rq, ioaccel */
8705 h->reply_queue[i].size = h->max_commands;
8706 h->reply_queue[i].wraparound = 1; /* spec: init to 1 */
8707 h->reply_queue[i].current_entry = 0;
8710 /* Need a block fetch table for performant mode */
8711 h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) *
8712 sizeof(u32)), GFP_KERNEL);
8713 if (!h->blockFetchTable) {
8715 goto clean1; /* rq, ioaccel */
8718 rc = hpsa_enter_performant_mode(h, trans_support);
8720 goto clean2; /* bft, rq, ioaccel */
8723 clean2: /* bft, rq, ioaccel */
8724 kfree(h->blockFetchTable);
8725 h->blockFetchTable = NULL;
8726 clean1: /* rq, ioaccel */
8727 hpsa_free_reply_queues(h);
8728 hpsa_free_ioaccel1_cmd_and_bft(h);
8729 hpsa_free_ioaccel2_cmd_and_bft(h);
8733 static int is_accelerated_cmd(struct CommandList *c)
8735 return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2;
8738 static void hpsa_drain_accel_commands(struct ctlr_info *h)
8740 struct CommandList *c = NULL;
8741 int i, accel_cmds_out;
8744 do { /* wait for all outstanding ioaccel commands to drain out */
8746 for (i = 0; i < h->nr_cmds; i++) {
8747 c = h->cmd_pool + i;
8748 refcount = atomic_inc_return(&c->refcount);
8749 if (refcount > 1) /* Command is allocated */
8750 accel_cmds_out += is_accelerated_cmd(c);
8753 if (accel_cmds_out <= 0)
8760 * This is it. Register the PCI driver information for the cards we control
8761 * the OS will call our registered routines when it finds one of our cards.
8763 static int __init hpsa_init(void)
8765 return pci_register_driver(&hpsa_pci_driver);
8768 static void __exit hpsa_cleanup(void)
8770 pci_unregister_driver(&hpsa_pci_driver);
8773 static void __attribute__((unused)) verify_offsets(void)
8775 #define VERIFY_OFFSET(member, offset) \
8776 BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset)
8778 VERIFY_OFFSET(structure_size, 0);
8779 VERIFY_OFFSET(volume_blk_size, 4);
8780 VERIFY_OFFSET(volume_blk_cnt, 8);
8781 VERIFY_OFFSET(phys_blk_shift, 16);
8782 VERIFY_OFFSET(parity_rotation_shift, 17);
8783 VERIFY_OFFSET(strip_size, 18);
8784 VERIFY_OFFSET(disk_starting_blk, 20);
8785 VERIFY_OFFSET(disk_blk_cnt, 28);
8786 VERIFY_OFFSET(data_disks_per_row, 36);
8787 VERIFY_OFFSET(metadata_disks_per_row, 38);
8788 VERIFY_OFFSET(row_cnt, 40);
8789 VERIFY_OFFSET(layout_map_count, 42);
8790 VERIFY_OFFSET(flags, 44);
8791 VERIFY_OFFSET(dekindex, 46);
8792 /* VERIFY_OFFSET(reserved, 48 */
8793 VERIFY_OFFSET(data, 64);
8795 #undef VERIFY_OFFSET
8797 #define VERIFY_OFFSET(member, offset) \
8798 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset)
8800 VERIFY_OFFSET(IU_type, 0);
8801 VERIFY_OFFSET(direction, 1);
8802 VERIFY_OFFSET(reply_queue, 2);
8803 /* VERIFY_OFFSET(reserved1, 3); */
8804 VERIFY_OFFSET(scsi_nexus, 4);
8805 VERIFY_OFFSET(Tag, 8);
8806 VERIFY_OFFSET(cdb, 16);
8807 VERIFY_OFFSET(cciss_lun, 32);
8808 VERIFY_OFFSET(data_len, 40);
8809 VERIFY_OFFSET(cmd_priority_task_attr, 44);
8810 VERIFY_OFFSET(sg_count, 45);
8811 /* VERIFY_OFFSET(reserved3 */
8812 VERIFY_OFFSET(err_ptr, 48);
8813 VERIFY_OFFSET(err_len, 56);
8814 /* VERIFY_OFFSET(reserved4 */
8815 VERIFY_OFFSET(sg, 64);
8817 #undef VERIFY_OFFSET
8819 #define VERIFY_OFFSET(member, offset) \
8820 BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset)
8822 VERIFY_OFFSET(dev_handle, 0x00);
8823 VERIFY_OFFSET(reserved1, 0x02);
8824 VERIFY_OFFSET(function, 0x03);
8825 VERIFY_OFFSET(reserved2, 0x04);
8826 VERIFY_OFFSET(err_info, 0x0C);
8827 VERIFY_OFFSET(reserved3, 0x10);
8828 VERIFY_OFFSET(err_info_len, 0x12);
8829 VERIFY_OFFSET(reserved4, 0x13);
8830 VERIFY_OFFSET(sgl_offset, 0x14);
8831 VERIFY_OFFSET(reserved5, 0x15);
8832 VERIFY_OFFSET(transfer_len, 0x1C);
8833 VERIFY_OFFSET(reserved6, 0x20);
8834 VERIFY_OFFSET(io_flags, 0x24);
8835 VERIFY_OFFSET(reserved7, 0x26);
8836 VERIFY_OFFSET(LUN, 0x34);
8837 VERIFY_OFFSET(control, 0x3C);
8838 VERIFY_OFFSET(CDB, 0x40);
8839 VERIFY_OFFSET(reserved8, 0x50);
8840 VERIFY_OFFSET(host_context_flags, 0x60);
8841 VERIFY_OFFSET(timeout_sec, 0x62);
8842 VERIFY_OFFSET(ReplyQueue, 0x64);
8843 VERIFY_OFFSET(reserved9, 0x65);
8844 VERIFY_OFFSET(tag, 0x68);
8845 VERIFY_OFFSET(host_addr, 0x70);
8846 VERIFY_OFFSET(CISS_LUN, 0x78);
8847 VERIFY_OFFSET(SG, 0x78 + 8);
8848 #undef VERIFY_OFFSET
8851 module_init(hpsa_init);
8852 module_exit(hpsa_cleanup);