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 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
1423 return DEVICE_NOT_FOUND;
1425 for (i = 0; i < haystack_size; i++) {
1426 if (haystack[i] == NULL) /* previously removed. */
1428 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
1430 if (device_is_the_same(needle, haystack[i])) {
1431 if (device_updated(needle, haystack[i]))
1432 return DEVICE_UPDATED;
1435 /* Keep offline devices offline */
1436 if (needle->volume_offline)
1437 return DEVICE_NOT_FOUND;
1438 return DEVICE_CHANGED;
1443 return DEVICE_NOT_FOUND;
1446 static void hpsa_monitor_offline_device(struct ctlr_info *h,
1447 unsigned char scsi3addr[])
1449 struct offline_device_entry *device;
1450 unsigned long flags;
1452 /* Check to see if device is already on the list */
1453 spin_lock_irqsave(&h->offline_device_lock, flags);
1454 list_for_each_entry(device, &h->offline_device_list, offline_list) {
1455 if (memcmp(device->scsi3addr, scsi3addr,
1456 sizeof(device->scsi3addr)) == 0) {
1457 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1461 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1463 /* Device is not on the list, add it. */
1464 device = kmalloc(sizeof(*device), GFP_KERNEL);
1466 dev_warn(&h->pdev->dev, "out of memory in %s\n", __func__);
1469 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1470 spin_lock_irqsave(&h->offline_device_lock, flags);
1471 list_add_tail(&device->offline_list, &h->offline_device_list);
1472 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1475 /* Print a message explaining various offline volume states */
1476 static void hpsa_show_volume_status(struct ctlr_info *h,
1477 struct hpsa_scsi_dev_t *sd)
1479 if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED)
1480 dev_info(&h->pdev->dev,
1481 "C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n",
1482 h->scsi_host->host_no,
1483 sd->bus, sd->target, sd->lun);
1484 switch (sd->volume_offline) {
1487 case HPSA_LV_UNDERGOING_ERASE:
1488 dev_info(&h->pdev->dev,
1489 "C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n",
1490 h->scsi_host->host_no,
1491 sd->bus, sd->target, sd->lun);
1493 case HPSA_LV_NOT_AVAILABLE:
1494 dev_info(&h->pdev->dev,
1495 "C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n",
1496 h->scsi_host->host_no,
1497 sd->bus, sd->target, sd->lun);
1499 case HPSA_LV_UNDERGOING_RPI:
1500 dev_info(&h->pdev->dev,
1501 "C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n",
1502 h->scsi_host->host_no,
1503 sd->bus, sd->target, sd->lun);
1505 case HPSA_LV_PENDING_RPI:
1506 dev_info(&h->pdev->dev,
1507 "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n",
1508 h->scsi_host->host_no,
1509 sd->bus, sd->target, sd->lun);
1511 case HPSA_LV_ENCRYPTED_NO_KEY:
1512 dev_info(&h->pdev->dev,
1513 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n",
1514 h->scsi_host->host_no,
1515 sd->bus, sd->target, sd->lun);
1517 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
1518 dev_info(&h->pdev->dev,
1519 "C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n",
1520 h->scsi_host->host_no,
1521 sd->bus, sd->target, sd->lun);
1523 case HPSA_LV_UNDERGOING_ENCRYPTION:
1524 dev_info(&h->pdev->dev,
1525 "C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n",
1526 h->scsi_host->host_no,
1527 sd->bus, sd->target, sd->lun);
1529 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
1530 dev_info(&h->pdev->dev,
1531 "C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n",
1532 h->scsi_host->host_no,
1533 sd->bus, sd->target, sd->lun);
1535 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1536 dev_info(&h->pdev->dev,
1537 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n",
1538 h->scsi_host->host_no,
1539 sd->bus, sd->target, sd->lun);
1541 case HPSA_LV_PENDING_ENCRYPTION:
1542 dev_info(&h->pdev->dev,
1543 "C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n",
1544 h->scsi_host->host_no,
1545 sd->bus, sd->target, sd->lun);
1547 case HPSA_LV_PENDING_ENCRYPTION_REKEYING:
1548 dev_info(&h->pdev->dev,
1549 "C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n",
1550 h->scsi_host->host_no,
1551 sd->bus, sd->target, sd->lun);
1557 * Figure the list of physical drive pointers for a logical drive with
1558 * raid offload configured.
1560 static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h,
1561 struct hpsa_scsi_dev_t *dev[], int ndevices,
1562 struct hpsa_scsi_dev_t *logical_drive)
1564 struct raid_map_data *map = &logical_drive->raid_map;
1565 struct raid_map_disk_data *dd = &map->data[0];
1567 int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
1568 le16_to_cpu(map->metadata_disks_per_row);
1569 int nraid_map_entries = le16_to_cpu(map->row_cnt) *
1570 le16_to_cpu(map->layout_map_count) *
1571 total_disks_per_row;
1572 int nphys_disk = le16_to_cpu(map->layout_map_count) *
1573 total_disks_per_row;
1576 if (nraid_map_entries > RAID_MAP_MAX_ENTRIES)
1577 nraid_map_entries = RAID_MAP_MAX_ENTRIES;
1579 logical_drive->nphysical_disks = nraid_map_entries;
1582 for (i = 0; i < nraid_map_entries; i++) {
1583 logical_drive->phys_disk[i] = NULL;
1584 if (!logical_drive->offload_config)
1586 for (j = 0; j < ndevices; j++) {
1589 if (dev[j]->devtype != TYPE_DISK)
1591 if (is_logical_dev_addr_mode(dev[j]->scsi3addr))
1593 if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle)
1596 logical_drive->phys_disk[i] = dev[j];
1598 qdepth = min(h->nr_cmds, qdepth +
1599 logical_drive->phys_disk[i]->queue_depth);
1604 * This can happen if a physical drive is removed and
1605 * the logical drive is degraded. In that case, the RAID
1606 * map data will refer to a physical disk which isn't actually
1607 * present. And in that case offload_enabled should already
1608 * be 0, but we'll turn it off here just in case
1610 if (!logical_drive->phys_disk[i]) {
1611 logical_drive->offload_enabled = 0;
1612 logical_drive->offload_to_be_enabled = 0;
1613 logical_drive->queue_depth = 8;
1616 if (nraid_map_entries)
1618 * This is correct for reads, too high for full stripe writes,
1619 * way too high for partial stripe writes
1621 logical_drive->queue_depth = qdepth;
1623 logical_drive->queue_depth = h->nr_cmds;
1626 static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h,
1627 struct hpsa_scsi_dev_t *dev[], int ndevices)
1631 for (i = 0; i < ndevices; i++) {
1634 if (dev[i]->devtype != TYPE_DISK)
1636 if (!is_logical_dev_addr_mode(dev[i]->scsi3addr))
1640 * If offload is currently enabled, the RAID map and
1641 * phys_disk[] assignment *better* not be changing
1642 * and since it isn't changing, we do not need to
1645 if (dev[i]->offload_enabled)
1648 hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]);
1652 static void adjust_hpsa_scsi_table(struct ctlr_info *h,
1653 struct hpsa_scsi_dev_t *sd[], int nsds)
1655 /* sd contains scsi3 addresses and devtypes, and inquiry
1656 * data. This function takes what's in sd to be the current
1657 * reality and updates h->dev[] to reflect that reality.
1659 int i, entry, device_change, changes = 0;
1660 struct hpsa_scsi_dev_t *csd;
1661 unsigned long flags;
1662 struct hpsa_scsi_dev_t **added, **removed;
1663 int nadded, nremoved;
1664 struct Scsi_Host *sh = NULL;
1666 added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL);
1667 removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL);
1669 if (!added || !removed) {
1670 dev_warn(&h->pdev->dev, "out of memory in "
1671 "adjust_hpsa_scsi_table\n");
1675 spin_lock_irqsave(&h->devlock, flags);
1677 /* find any devices in h->dev[] that are not in
1678 * sd[] and remove them from h->dev[], and for any
1679 * devices which have changed, remove the old device
1680 * info and add the new device info.
1681 * If minor device attributes change, just update
1682 * the existing device structure.
1687 while (i < h->ndevices) {
1689 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
1690 if (device_change == DEVICE_NOT_FOUND) {
1692 hpsa_scsi_remove_entry(h, i, removed, &nremoved);
1693 continue; /* remove ^^^, hence i not incremented */
1694 } else if (device_change == DEVICE_CHANGED) {
1696 hpsa_scsi_replace_entry(h, i, sd[entry],
1697 added, &nadded, removed, &nremoved);
1698 /* Set it to NULL to prevent it from being freed
1699 * at the bottom of hpsa_update_scsi_devices()
1702 } else if (device_change == DEVICE_UPDATED) {
1703 hpsa_scsi_update_entry(h, i, sd[entry]);
1708 /* Now, make sure every device listed in sd[] is also
1709 * listed in h->dev[], adding them if they aren't found
1712 for (i = 0; i < nsds; i++) {
1713 if (!sd[i]) /* if already added above. */
1716 /* Don't add devices which are NOT READY, FORMAT IN PROGRESS
1717 * as the SCSI mid-layer does not handle such devices well.
1718 * It relentlessly loops sending TUR at 3Hz, then READ(10)
1719 * at 160Hz, and prevents the system from coming up.
1721 if (sd[i]->volume_offline) {
1722 hpsa_show_volume_status(h, sd[i]);
1723 hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline");
1727 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
1728 h->ndevices, &entry);
1729 if (device_change == DEVICE_NOT_FOUND) {
1731 if (hpsa_scsi_add_entry(h, sd[i], added, &nadded) != 0)
1733 sd[i] = NULL; /* prevent from being freed later. */
1734 } else if (device_change == DEVICE_CHANGED) {
1735 /* should never happen... */
1737 dev_warn(&h->pdev->dev,
1738 "device unexpectedly changed.\n");
1739 /* but if it does happen, we just ignore that device */
1742 hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices);
1744 /* Now that h->dev[]->phys_disk[] is coherent, we can enable
1745 * any logical drives that need it enabled.
1747 for (i = 0; i < h->ndevices; i++) {
1748 if (h->dev[i] == NULL)
1750 h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled;
1753 spin_unlock_irqrestore(&h->devlock, flags);
1755 /* Monitor devices which are in one of several NOT READY states to be
1756 * brought online later. This must be done without holding h->devlock,
1757 * so don't touch h->dev[]
1759 for (i = 0; i < nsds; i++) {
1760 if (!sd[i]) /* if already added above. */
1762 if (sd[i]->volume_offline)
1763 hpsa_monitor_offline_device(h, sd[i]->scsi3addr);
1766 /* Don't notify scsi mid layer of any changes the first time through
1767 * (or if there are no changes) scsi_scan_host will do it later the
1768 * first time through.
1774 /* Notify scsi mid layer of any removed devices */
1775 for (i = 0; i < nremoved; i++) {
1776 if (removed[i] == NULL)
1778 if (removed[i]->expose_state & HPSA_SCSI_ADD) {
1779 struct scsi_device *sdev =
1780 scsi_device_lookup(sh, removed[i]->bus,
1781 removed[i]->target, removed[i]->lun);
1783 scsi_remove_device(sdev);
1784 scsi_device_put(sdev);
1787 * We don't expect to get here.
1788 * future cmds to this device will get selection
1789 * timeout as if the device was gone.
1791 hpsa_show_dev_msg(KERN_WARNING, h, removed[i],
1792 "didn't find device for removal.");
1799 /* Notify scsi mid layer of any added devices */
1800 for (i = 0; i < nadded; i++) {
1801 if (added[i] == NULL)
1803 if (!(added[i]->expose_state & HPSA_SCSI_ADD))
1805 if (scsi_add_device(sh, added[i]->bus,
1806 added[i]->target, added[i]->lun) == 0)
1808 dev_warn(&h->pdev->dev, "addition failed, device not added.");
1809 /* now we have to remove it from h->dev,
1810 * since it didn't get added to scsi mid layer
1812 fixup_botched_add(h, added[i]);
1813 h->drv_req_rescan = 1;
1822 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t *
1823 * Assume's h->devlock is held.
1825 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
1826 int bus, int target, int lun)
1829 struct hpsa_scsi_dev_t *sd;
1831 for (i = 0; i < h->ndevices; i++) {
1833 if (sd->bus == bus && sd->target == target && sd->lun == lun)
1839 static int hpsa_slave_alloc(struct scsi_device *sdev)
1841 struct hpsa_scsi_dev_t *sd;
1842 unsigned long flags;
1843 struct ctlr_info *h;
1845 h = sdev_to_hba(sdev);
1846 spin_lock_irqsave(&h->devlock, flags);
1847 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
1848 sdev_id(sdev), sdev->lun);
1850 atomic_set(&sd->ioaccel_cmds_out, 0);
1851 sdev->hostdata = (sd->expose_state & HPSA_SCSI_ADD) ? sd : NULL;
1853 sdev->hostdata = NULL;
1854 spin_unlock_irqrestore(&h->devlock, flags);
1858 /* configure scsi device based on internal per-device structure */
1859 static int hpsa_slave_configure(struct scsi_device *sdev)
1861 struct hpsa_scsi_dev_t *sd;
1864 sd = sdev->hostdata;
1865 sdev->no_uld_attach = !sd || !(sd->expose_state & HPSA_ULD_ATTACH);
1868 queue_depth = sd->queue_depth != 0 ?
1869 sd->queue_depth : sdev->host->can_queue;
1871 queue_depth = sdev->host->can_queue;
1873 scsi_change_queue_depth(sdev, queue_depth);
1878 static void hpsa_slave_destroy(struct scsi_device *sdev)
1880 /* nothing to do. */
1883 static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
1887 if (!h->ioaccel2_cmd_sg_list)
1889 for (i = 0; i < h->nr_cmds; i++) {
1890 kfree(h->ioaccel2_cmd_sg_list[i]);
1891 h->ioaccel2_cmd_sg_list[i] = NULL;
1893 kfree(h->ioaccel2_cmd_sg_list);
1894 h->ioaccel2_cmd_sg_list = NULL;
1897 static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
1901 if (h->chainsize <= 0)
1904 h->ioaccel2_cmd_sg_list =
1905 kzalloc(sizeof(*h->ioaccel2_cmd_sg_list) * h->nr_cmds,
1907 if (!h->ioaccel2_cmd_sg_list)
1909 for (i = 0; i < h->nr_cmds; i++) {
1910 h->ioaccel2_cmd_sg_list[i] =
1911 kmalloc(sizeof(*h->ioaccel2_cmd_sg_list[i]) *
1912 h->maxsgentries, GFP_KERNEL);
1913 if (!h->ioaccel2_cmd_sg_list[i])
1919 hpsa_free_ioaccel2_sg_chain_blocks(h);
1923 static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
1927 if (!h->cmd_sg_list)
1929 for (i = 0; i < h->nr_cmds; i++) {
1930 kfree(h->cmd_sg_list[i]);
1931 h->cmd_sg_list[i] = NULL;
1933 kfree(h->cmd_sg_list);
1934 h->cmd_sg_list = NULL;
1937 static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h)
1941 if (h->chainsize <= 0)
1944 h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds,
1946 if (!h->cmd_sg_list) {
1947 dev_err(&h->pdev->dev, "Failed to allocate SG list\n");
1950 for (i = 0; i < h->nr_cmds; i++) {
1951 h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) *
1952 h->chainsize, GFP_KERNEL);
1953 if (!h->cmd_sg_list[i]) {
1954 dev_err(&h->pdev->dev, "Failed to allocate cmd SG\n");
1961 hpsa_free_sg_chain_blocks(h);
1965 static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h,
1966 struct io_accel2_cmd *cp, struct CommandList *c)
1968 struct ioaccel2_sg_element *chain_block;
1972 chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex];
1973 chain_size = le32_to_cpu(cp->data_len);
1974 temp64 = pci_map_single(h->pdev, chain_block, chain_size,
1976 if (dma_mapping_error(&h->pdev->dev, temp64)) {
1977 /* prevent subsequent unmapping */
1978 cp->sg->address = 0;
1981 cp->sg->address = cpu_to_le64(temp64);
1985 static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h,
1986 struct io_accel2_cmd *cp)
1988 struct ioaccel2_sg_element *chain_sg;
1993 temp64 = le64_to_cpu(chain_sg->address);
1994 chain_size = le32_to_cpu(cp->data_len);
1995 pci_unmap_single(h->pdev, temp64, chain_size, PCI_DMA_TODEVICE);
1998 static int hpsa_map_sg_chain_block(struct ctlr_info *h,
1999 struct CommandList *c)
2001 struct SGDescriptor *chain_sg, *chain_block;
2005 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2006 chain_block = h->cmd_sg_list[c->cmdindex];
2007 chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN);
2008 chain_len = sizeof(*chain_sg) *
2009 (le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries);
2010 chain_sg->Len = cpu_to_le32(chain_len);
2011 temp64 = pci_map_single(h->pdev, chain_block, chain_len,
2013 if (dma_mapping_error(&h->pdev->dev, temp64)) {
2014 /* prevent subsequent unmapping */
2015 chain_sg->Addr = cpu_to_le64(0);
2018 chain_sg->Addr = cpu_to_le64(temp64);
2022 static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
2023 struct CommandList *c)
2025 struct SGDescriptor *chain_sg;
2027 if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries)
2030 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2031 pci_unmap_single(h->pdev, le64_to_cpu(chain_sg->Addr),
2032 le32_to_cpu(chain_sg->Len), PCI_DMA_TODEVICE);
2036 /* Decode the various types of errors on ioaccel2 path.
2037 * Return 1 for any error that should generate a RAID path retry.
2038 * Return 0 for errors that don't require a RAID path retry.
2040 static int handle_ioaccel_mode2_error(struct ctlr_info *h,
2041 struct CommandList *c,
2042 struct scsi_cmnd *cmd,
2043 struct io_accel2_cmd *c2)
2047 u32 ioaccel2_resid = 0;
2049 switch (c2->error_data.serv_response) {
2050 case IOACCEL2_SERV_RESPONSE_COMPLETE:
2051 switch (c2->error_data.status) {
2052 case IOACCEL2_STATUS_SR_TASK_COMP_GOOD:
2054 case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND:
2055 cmd->result |= SAM_STAT_CHECK_CONDITION;
2056 if (c2->error_data.data_present !=
2057 IOACCEL2_SENSE_DATA_PRESENT) {
2058 memset(cmd->sense_buffer, 0,
2059 SCSI_SENSE_BUFFERSIZE);
2062 /* copy the sense data */
2063 data_len = c2->error_data.sense_data_len;
2064 if (data_len > SCSI_SENSE_BUFFERSIZE)
2065 data_len = SCSI_SENSE_BUFFERSIZE;
2066 if (data_len > sizeof(c2->error_data.sense_data_buff))
2068 sizeof(c2->error_data.sense_data_buff);
2069 memcpy(cmd->sense_buffer,
2070 c2->error_data.sense_data_buff, data_len);
2073 case IOACCEL2_STATUS_SR_TASK_COMP_BUSY:
2076 case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON:
2079 case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL:
2082 case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED:
2090 case IOACCEL2_SERV_RESPONSE_FAILURE:
2091 switch (c2->error_data.status) {
2092 case IOACCEL2_STATUS_SR_IO_ERROR:
2093 case IOACCEL2_STATUS_SR_IO_ABORTED:
2094 case IOACCEL2_STATUS_SR_OVERRUN:
2097 case IOACCEL2_STATUS_SR_UNDERRUN:
2098 cmd->result = (DID_OK << 16); /* host byte */
2099 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2100 ioaccel2_resid = get_unaligned_le32(
2101 &c2->error_data.resid_cnt[0]);
2102 scsi_set_resid(cmd, ioaccel2_resid);
2104 case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE:
2105 case IOACCEL2_STATUS_SR_INVALID_DEVICE:
2106 case IOACCEL2_STATUS_SR_IOACCEL_DISABLED:
2107 /* We will get an event from ctlr to trigger rescan */
2114 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
2116 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
2118 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
2121 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
2128 return retry; /* retry on raid path? */
2131 static void hpsa_cmd_resolve_events(struct ctlr_info *h,
2132 struct CommandList *c)
2134 bool do_wake = false;
2137 * Prevent the following race in the abort handler:
2139 * 1. LLD is requested to abort a SCSI command
2140 * 2. The SCSI command completes
2141 * 3. The struct CommandList associated with step 2 is made available
2142 * 4. New I/O request to LLD to another LUN re-uses struct CommandList
2143 * 5. Abort handler follows scsi_cmnd->host_scribble and
2144 * finds struct CommandList and tries to aborts it
2145 * Now we have aborted the wrong command.
2147 * Reset c->scsi_cmd here so that the abort or reset handler will know
2148 * this command has completed. Then, check to see if the handler is
2149 * waiting for this command, and, if so, wake it.
2151 c->scsi_cmd = SCSI_CMD_IDLE;
2152 mb(); /* Declare command idle before checking for pending events. */
2153 if (c->abort_pending) {
2155 c->abort_pending = false;
2157 if (c->reset_pending) {
2158 unsigned long flags;
2159 struct hpsa_scsi_dev_t *dev;
2162 * There appears to be a reset pending; lock the lock and
2163 * reconfirm. If so, then decrement the count of outstanding
2164 * commands and wake the reset command if this is the last one.
2166 spin_lock_irqsave(&h->lock, flags);
2167 dev = c->reset_pending; /* Re-fetch under the lock. */
2168 if (dev && atomic_dec_and_test(&dev->reset_cmds_out))
2170 c->reset_pending = NULL;
2171 spin_unlock_irqrestore(&h->lock, flags);
2175 wake_up_all(&h->event_sync_wait_queue);
2178 static void hpsa_cmd_resolve_and_free(struct ctlr_info *h,
2179 struct CommandList *c)
2181 hpsa_cmd_resolve_events(h, c);
2182 cmd_tagged_free(h, c);
2185 static void hpsa_cmd_free_and_done(struct ctlr_info *h,
2186 struct CommandList *c, struct scsi_cmnd *cmd)
2188 hpsa_cmd_resolve_and_free(h, c);
2189 cmd->scsi_done(cmd);
2192 static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c)
2194 INIT_WORK(&c->work, hpsa_command_resubmit_worker);
2195 queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work);
2198 static void hpsa_set_scsi_cmd_aborted(struct scsi_cmnd *cmd)
2200 cmd->result = DID_ABORT << 16;
2203 static void hpsa_cmd_abort_and_free(struct ctlr_info *h, struct CommandList *c,
2204 struct scsi_cmnd *cmd)
2206 hpsa_set_scsi_cmd_aborted(cmd);
2207 dev_warn(&h->pdev->dev, "CDB %16phN was aborted with status 0x%x\n",
2208 c->Request.CDB, c->err_info->ScsiStatus);
2209 hpsa_cmd_resolve_and_free(h, c);
2212 static void process_ioaccel2_completion(struct ctlr_info *h,
2213 struct CommandList *c, struct scsi_cmnd *cmd,
2214 struct hpsa_scsi_dev_t *dev)
2216 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2218 /* check for good status */
2219 if (likely(c2->error_data.serv_response == 0 &&
2220 c2->error_data.status == 0))
2221 return hpsa_cmd_free_and_done(h, c, cmd);
2224 * Any RAID offload error results in retry which will use
2225 * the normal I/O path so the controller can handle whatever's
2228 if (is_logical_dev_addr_mode(dev->scsi3addr) &&
2229 c2->error_data.serv_response ==
2230 IOACCEL2_SERV_RESPONSE_FAILURE) {
2231 if (c2->error_data.status ==
2232 IOACCEL2_STATUS_SR_IOACCEL_DISABLED)
2233 dev->offload_enabled = 0;
2235 return hpsa_retry_cmd(h, c);
2238 if (handle_ioaccel_mode2_error(h, c, cmd, c2))
2239 return hpsa_retry_cmd(h, c);
2241 return hpsa_cmd_free_and_done(h, c, cmd);
2244 /* Returns 0 on success, < 0 otherwise. */
2245 static int hpsa_evaluate_tmf_status(struct ctlr_info *h,
2246 struct CommandList *cp)
2248 u8 tmf_status = cp->err_info->ScsiStatus;
2250 switch (tmf_status) {
2251 case CISS_TMF_COMPLETE:
2253 * CISS_TMF_COMPLETE never happens, instead,
2254 * ei->CommandStatus == 0 for this case.
2256 case CISS_TMF_SUCCESS:
2258 case CISS_TMF_INVALID_FRAME:
2259 case CISS_TMF_NOT_SUPPORTED:
2260 case CISS_TMF_FAILED:
2261 case CISS_TMF_WRONG_LUN:
2262 case CISS_TMF_OVERLAPPED_TAG:
2265 dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n",
2272 static void complete_scsi_command(struct CommandList *cp)
2274 struct scsi_cmnd *cmd;
2275 struct ctlr_info *h;
2276 struct ErrorInfo *ei;
2277 struct hpsa_scsi_dev_t *dev;
2278 struct io_accel2_cmd *c2;
2281 u8 asc; /* additional sense code */
2282 u8 ascq; /* additional sense code qualifier */
2283 unsigned long sense_data_size;
2288 dev = cmd->device->hostdata;
2289 c2 = &h->ioaccel2_cmd_pool[cp->cmdindex];
2291 scsi_dma_unmap(cmd); /* undo the DMA mappings */
2292 if ((cp->cmd_type == CMD_SCSI) &&
2293 (le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries))
2294 hpsa_unmap_sg_chain_block(h, cp);
2296 if ((cp->cmd_type == CMD_IOACCEL2) &&
2297 (c2->sg[0].chain_indicator == IOACCEL2_CHAIN))
2298 hpsa_unmap_ioaccel2_sg_chain_block(h, c2);
2300 cmd->result = (DID_OK << 16); /* host byte */
2301 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2303 if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1)
2304 atomic_dec(&cp->phys_disk->ioaccel_cmds_out);
2307 * We check for lockup status here as it may be set for
2308 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by
2309 * fail_all_oustanding_cmds()
2311 if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) {
2312 /* DID_NO_CONNECT will prevent a retry */
2313 cmd->result = DID_NO_CONNECT << 16;
2314 return hpsa_cmd_free_and_done(h, cp, cmd);
2317 if ((unlikely(hpsa_is_pending_event(cp)))) {
2318 if (cp->reset_pending)
2319 return hpsa_cmd_resolve_and_free(h, cp);
2320 if (cp->abort_pending)
2321 return hpsa_cmd_abort_and_free(h, cp, cmd);
2324 if (cp->cmd_type == CMD_IOACCEL2)
2325 return process_ioaccel2_completion(h, cp, cmd, dev);
2327 scsi_set_resid(cmd, ei->ResidualCnt);
2328 if (ei->CommandStatus == 0)
2329 return hpsa_cmd_free_and_done(h, cp, cmd);
2331 /* For I/O accelerator commands, copy over some fields to the normal
2332 * CISS header used below for error handling.
2334 if (cp->cmd_type == CMD_IOACCEL1) {
2335 struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex];
2336 cp->Header.SGList = scsi_sg_count(cmd);
2337 cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList);
2338 cp->Request.CDBLen = le16_to_cpu(c->io_flags) &
2339 IOACCEL1_IOFLAGS_CDBLEN_MASK;
2340 cp->Header.tag = c->tag;
2341 memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8);
2342 memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen);
2344 /* Any RAID offload error results in retry which will use
2345 * the normal I/O path so the controller can handle whatever's
2348 if (is_logical_dev_addr_mode(dev->scsi3addr)) {
2349 if (ei->CommandStatus == CMD_IOACCEL_DISABLED)
2350 dev->offload_enabled = 0;
2351 return hpsa_retry_cmd(h, cp);
2355 /* an error has occurred */
2356 switch (ei->CommandStatus) {
2358 case CMD_TARGET_STATUS:
2359 cmd->result |= ei->ScsiStatus;
2360 /* copy the sense data */
2361 if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
2362 sense_data_size = SCSI_SENSE_BUFFERSIZE;
2364 sense_data_size = sizeof(ei->SenseInfo);
2365 if (ei->SenseLen < sense_data_size)
2366 sense_data_size = ei->SenseLen;
2367 memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
2369 decode_sense_data(ei->SenseInfo, sense_data_size,
2370 &sense_key, &asc, &ascq);
2371 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
2372 if (sense_key == ABORTED_COMMAND) {
2373 cmd->result |= DID_SOFT_ERROR << 16;
2378 /* Problem was not a check condition
2379 * Pass it up to the upper layers...
2381 if (ei->ScsiStatus) {
2382 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
2383 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
2384 "Returning result: 0x%x\n",
2386 sense_key, asc, ascq,
2388 } else { /* scsi status is zero??? How??? */
2389 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
2390 "Returning no connection.\n", cp),
2392 /* Ordinarily, this case should never happen,
2393 * but there is a bug in some released firmware
2394 * revisions that allows it to happen if, for
2395 * example, a 4100 backplane loses power and
2396 * the tape drive is in it. We assume that
2397 * it's a fatal error of some kind because we
2398 * can't show that it wasn't. We will make it
2399 * look like selection timeout since that is
2400 * the most common reason for this to occur,
2401 * and it's severe enough.
2404 cmd->result = DID_NO_CONNECT << 16;
2408 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2410 case CMD_DATA_OVERRUN:
2411 dev_warn(&h->pdev->dev,
2412 "CDB %16phN data overrun\n", cp->Request.CDB);
2415 /* print_bytes(cp, sizeof(*cp), 1, 0);
2417 /* We get CMD_INVALID if you address a non-existent device
2418 * instead of a selection timeout (no response). You will
2419 * see this if you yank out a drive, then try to access it.
2420 * This is kind of a shame because it means that any other
2421 * CMD_INVALID (e.g. driver bug) will get interpreted as a
2422 * missing target. */
2423 cmd->result = DID_NO_CONNECT << 16;
2426 case CMD_PROTOCOL_ERR:
2427 cmd->result = DID_ERROR << 16;
2428 dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n",
2431 case CMD_HARDWARE_ERR:
2432 cmd->result = DID_ERROR << 16;
2433 dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n",
2436 case CMD_CONNECTION_LOST:
2437 cmd->result = DID_ERROR << 16;
2438 dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n",
2442 /* Return now to avoid calling scsi_done(). */
2443 return hpsa_cmd_abort_and_free(h, cp, cmd);
2444 case CMD_ABORT_FAILED:
2445 cmd->result = DID_ERROR << 16;
2446 dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n",
2449 case CMD_UNSOLICITED_ABORT:
2450 cmd->result = DID_SOFT_ERROR << 16; /* retry the command */
2451 dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n",
2455 cmd->result = DID_TIME_OUT << 16;
2456 dev_warn(&h->pdev->dev, "CDB %16phN timed out\n",
2459 case CMD_UNABORTABLE:
2460 cmd->result = DID_ERROR << 16;
2461 dev_warn(&h->pdev->dev, "Command unabortable\n");
2463 case CMD_TMF_STATUS:
2464 if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */
2465 cmd->result = DID_ERROR << 16;
2467 case CMD_IOACCEL_DISABLED:
2468 /* This only handles the direct pass-through case since RAID
2469 * offload is handled above. Just attempt a retry.
2471 cmd->result = DID_SOFT_ERROR << 16;
2472 dev_warn(&h->pdev->dev,
2473 "cp %p had HP SSD Smart Path error\n", cp);
2476 cmd->result = DID_ERROR << 16;
2477 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
2478 cp, ei->CommandStatus);
2481 return hpsa_cmd_free_and_done(h, cp, cmd);
2484 static void hpsa_pci_unmap(struct pci_dev *pdev,
2485 struct CommandList *c, int sg_used, int data_direction)
2489 for (i = 0; i < sg_used; i++)
2490 pci_unmap_single(pdev, (dma_addr_t) le64_to_cpu(c->SG[i].Addr),
2491 le32_to_cpu(c->SG[i].Len),
2495 static int hpsa_map_one(struct pci_dev *pdev,
2496 struct CommandList *cp,
2503 if (buflen == 0 || data_direction == PCI_DMA_NONE) {
2504 cp->Header.SGList = 0;
2505 cp->Header.SGTotal = cpu_to_le16(0);
2509 addr64 = pci_map_single(pdev, buf, buflen, data_direction);
2510 if (dma_mapping_error(&pdev->dev, addr64)) {
2511 /* Prevent subsequent unmap of something never mapped */
2512 cp->Header.SGList = 0;
2513 cp->Header.SGTotal = cpu_to_le16(0);
2516 cp->SG[0].Addr = cpu_to_le64(addr64);
2517 cp->SG[0].Len = cpu_to_le32(buflen);
2518 cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */
2519 cp->Header.SGList = 1; /* no. SGs contig in this cmd */
2520 cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */
2524 #define NO_TIMEOUT ((unsigned long) -1)
2525 #define DEFAULT_TIMEOUT 30000 /* milliseconds */
2526 static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
2527 struct CommandList *c, int reply_queue, unsigned long timeout_msecs)
2529 DECLARE_COMPLETION_ONSTACK(wait);
2532 __enqueue_cmd_and_start_io(h, c, reply_queue);
2533 if (timeout_msecs == NO_TIMEOUT) {
2534 /* TODO: get rid of this no-timeout thing */
2535 wait_for_completion_io(&wait);
2538 if (!wait_for_completion_io_timeout(&wait,
2539 msecs_to_jiffies(timeout_msecs))) {
2540 dev_warn(&h->pdev->dev, "Command timed out.\n");
2546 static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c,
2547 int reply_queue, unsigned long timeout_msecs)
2549 if (unlikely(lockup_detected(h))) {
2550 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
2553 return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs);
2556 static u32 lockup_detected(struct ctlr_info *h)
2559 u32 rc, *lockup_detected;
2562 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
2563 rc = *lockup_detected;
2568 #define MAX_DRIVER_CMD_RETRIES 25
2569 static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
2570 struct CommandList *c, int data_direction, unsigned long timeout_msecs)
2572 int backoff_time = 10, retry_count = 0;
2576 memset(c->err_info, 0, sizeof(*c->err_info));
2577 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
2582 if (retry_count > 3) {
2583 msleep(backoff_time);
2584 if (backoff_time < 1000)
2587 } while ((check_for_unit_attention(h, c) ||
2588 check_for_busy(h, c)) &&
2589 retry_count <= MAX_DRIVER_CMD_RETRIES);
2590 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
2591 if (retry_count > MAX_DRIVER_CMD_RETRIES)
2596 static void hpsa_print_cmd(struct ctlr_info *h, char *txt,
2597 struct CommandList *c)
2599 const u8 *cdb = c->Request.CDB;
2600 const u8 *lun = c->Header.LUN.LunAddrBytes;
2602 dev_warn(&h->pdev->dev, "%s: LUN:%02x%02x%02x%02x%02x%02x%02x%02x"
2603 " CDB:%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
2604 txt, lun[0], lun[1], lun[2], lun[3],
2605 lun[4], lun[5], lun[6], lun[7],
2606 cdb[0], cdb[1], cdb[2], cdb[3],
2607 cdb[4], cdb[5], cdb[6], cdb[7],
2608 cdb[8], cdb[9], cdb[10], cdb[11],
2609 cdb[12], cdb[13], cdb[14], cdb[15]);
2612 static void hpsa_scsi_interpret_error(struct ctlr_info *h,
2613 struct CommandList *cp)
2615 const struct ErrorInfo *ei = cp->err_info;
2616 struct device *d = &cp->h->pdev->dev;
2617 u8 sense_key, asc, ascq;
2620 switch (ei->CommandStatus) {
2621 case CMD_TARGET_STATUS:
2622 if (ei->SenseLen > sizeof(ei->SenseInfo))
2623 sense_len = sizeof(ei->SenseInfo);
2625 sense_len = ei->SenseLen;
2626 decode_sense_data(ei->SenseInfo, sense_len,
2627 &sense_key, &asc, &ascq);
2628 hpsa_print_cmd(h, "SCSI status", cp);
2629 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION)
2630 dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n",
2631 sense_key, asc, ascq);
2633 dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus);
2634 if (ei->ScsiStatus == 0)
2635 dev_warn(d, "SCSI status is abnormally zero. "
2636 "(probably indicates selection timeout "
2637 "reported incorrectly due to a known "
2638 "firmware bug, circa July, 2001.)\n");
2640 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2642 case CMD_DATA_OVERRUN:
2643 hpsa_print_cmd(h, "overrun condition", cp);
2646 /* controller unfortunately reports SCSI passthru's
2647 * to non-existent targets as invalid commands.
2649 hpsa_print_cmd(h, "invalid command", cp);
2650 dev_warn(d, "probably means device no longer present\n");
2653 case CMD_PROTOCOL_ERR:
2654 hpsa_print_cmd(h, "protocol error", cp);
2656 case CMD_HARDWARE_ERR:
2657 hpsa_print_cmd(h, "hardware error", cp);
2659 case CMD_CONNECTION_LOST:
2660 hpsa_print_cmd(h, "connection lost", cp);
2663 hpsa_print_cmd(h, "aborted", cp);
2665 case CMD_ABORT_FAILED:
2666 hpsa_print_cmd(h, "abort failed", cp);
2668 case CMD_UNSOLICITED_ABORT:
2669 hpsa_print_cmd(h, "unsolicited abort", cp);
2672 hpsa_print_cmd(h, "timed out", cp);
2674 case CMD_UNABORTABLE:
2675 hpsa_print_cmd(h, "unabortable", cp);
2677 case CMD_CTLR_LOCKUP:
2678 hpsa_print_cmd(h, "controller lockup detected", cp);
2681 hpsa_print_cmd(h, "unknown status", cp);
2682 dev_warn(d, "Unknown command status %x\n",
2687 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
2688 u16 page, unsigned char *buf,
2689 unsigned char bufsize)
2692 struct CommandList *c;
2693 struct ErrorInfo *ei;
2697 if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize,
2698 page, scsi3addr, TYPE_CMD)) {
2702 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
2703 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
2707 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
2708 hpsa_scsi_interpret_error(h, c);
2716 static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr,
2717 u8 reset_type, int reply_queue)
2720 struct CommandList *c;
2721 struct ErrorInfo *ei;
2726 /* fill_cmd can't fail here, no data buffer to map. */
2727 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
2728 scsi3addr, TYPE_MSG);
2729 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to LUN reset */
2730 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
2732 dev_warn(&h->pdev->dev, "Failed to send reset command\n");
2735 /* no unmap needed here because no data xfer. */
2738 if (ei->CommandStatus != 0) {
2739 hpsa_scsi_interpret_error(h, c);
2747 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
2748 struct hpsa_scsi_dev_t *dev,
2749 unsigned char *scsi3addr)
2753 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2754 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
2756 if (hpsa_is_cmd_idle(c))
2759 switch (c->cmd_type) {
2761 case CMD_IOCTL_PEND:
2762 match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes,
2763 sizeof(c->Header.LUN.LunAddrBytes));
2768 if (c->phys_disk == dev) {
2769 /* HBA mode match */
2772 /* Possible RAID mode -- check each phys dev. */
2773 /* FIXME: Do we need to take out a lock here? If
2774 * so, we could just call hpsa_get_pdisk_of_ioaccel2()
2776 for (i = 0; i < dev->nphysical_disks && !match; i++) {
2777 /* FIXME: an alternate test might be
2779 * match = dev->phys_disk[i]->ioaccel_handle
2780 * == c2->scsi_nexus; */
2781 match = dev->phys_disk[i] == c->phys_disk;
2787 for (i = 0; i < dev->nphysical_disks && !match; i++) {
2788 match = dev->phys_disk[i]->ioaccel_handle ==
2789 le32_to_cpu(ac->it_nexus);
2793 case 0: /* The command is in the middle of being initialized. */
2798 dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n",
2806 static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
2807 unsigned char *scsi3addr, u8 reset_type, int reply_queue)
2812 /* We can really only handle one reset at a time */
2813 if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) {
2814 dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n");
2818 BUG_ON(atomic_read(&dev->reset_cmds_out) != 0);
2820 for (i = 0; i < h->nr_cmds; i++) {
2821 struct CommandList *c = h->cmd_pool + i;
2822 int refcount = atomic_inc_return(&c->refcount);
2824 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, scsi3addr)) {
2825 unsigned long flags;
2828 * Mark the target command as having a reset pending,
2829 * then lock a lock so that the command cannot complete
2830 * while we're considering it. If the command is not
2831 * idle then count it; otherwise revoke the event.
2833 c->reset_pending = dev;
2834 spin_lock_irqsave(&h->lock, flags); /* Implied MB */
2835 if (!hpsa_is_cmd_idle(c))
2836 atomic_inc(&dev->reset_cmds_out);
2838 c->reset_pending = NULL;
2839 spin_unlock_irqrestore(&h->lock, flags);
2845 rc = hpsa_send_reset(h, scsi3addr, reset_type, reply_queue);
2847 wait_event(h->event_sync_wait_queue,
2848 atomic_read(&dev->reset_cmds_out) == 0 ||
2849 lockup_detected(h));
2851 if (unlikely(lockup_detected(h))) {
2852 dev_warn(&h->pdev->dev,
2853 "Controller lockup detected during reset wait\n");
2858 atomic_set(&dev->reset_cmds_out, 0);
2860 mutex_unlock(&h->reset_mutex);
2864 static void hpsa_get_raid_level(struct ctlr_info *h,
2865 unsigned char *scsi3addr, unsigned char *raid_level)
2870 *raid_level = RAID_UNKNOWN;
2871 buf = kzalloc(64, GFP_KERNEL);
2874 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0xC1, buf, 64);
2876 *raid_level = buf[8];
2877 if (*raid_level > RAID_UNKNOWN)
2878 *raid_level = RAID_UNKNOWN;
2883 #define HPSA_MAP_DEBUG
2884 #ifdef HPSA_MAP_DEBUG
2885 static void hpsa_debug_map_buff(struct ctlr_info *h, int rc,
2886 struct raid_map_data *map_buff)
2888 struct raid_map_disk_data *dd = &map_buff->data[0];
2890 u16 map_cnt, row_cnt, disks_per_row;
2895 /* Show details only if debugging has been activated. */
2896 if (h->raid_offload_debug < 2)
2899 dev_info(&h->pdev->dev, "structure_size = %u\n",
2900 le32_to_cpu(map_buff->structure_size));
2901 dev_info(&h->pdev->dev, "volume_blk_size = %u\n",
2902 le32_to_cpu(map_buff->volume_blk_size));
2903 dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n",
2904 le64_to_cpu(map_buff->volume_blk_cnt));
2905 dev_info(&h->pdev->dev, "physicalBlockShift = %u\n",
2906 map_buff->phys_blk_shift);
2907 dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n",
2908 map_buff->parity_rotation_shift);
2909 dev_info(&h->pdev->dev, "strip_size = %u\n",
2910 le16_to_cpu(map_buff->strip_size));
2911 dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n",
2912 le64_to_cpu(map_buff->disk_starting_blk));
2913 dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n",
2914 le64_to_cpu(map_buff->disk_blk_cnt));
2915 dev_info(&h->pdev->dev, "data_disks_per_row = %u\n",
2916 le16_to_cpu(map_buff->data_disks_per_row));
2917 dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n",
2918 le16_to_cpu(map_buff->metadata_disks_per_row));
2919 dev_info(&h->pdev->dev, "row_cnt = %u\n",
2920 le16_to_cpu(map_buff->row_cnt));
2921 dev_info(&h->pdev->dev, "layout_map_count = %u\n",
2922 le16_to_cpu(map_buff->layout_map_count));
2923 dev_info(&h->pdev->dev, "flags = 0x%x\n",
2924 le16_to_cpu(map_buff->flags));
2925 dev_info(&h->pdev->dev, "encrypytion = %s\n",
2926 le16_to_cpu(map_buff->flags) &
2927 RAID_MAP_FLAG_ENCRYPT_ON ? "ON" : "OFF");
2928 dev_info(&h->pdev->dev, "dekindex = %u\n",
2929 le16_to_cpu(map_buff->dekindex));
2930 map_cnt = le16_to_cpu(map_buff->layout_map_count);
2931 for (map = 0; map < map_cnt; map++) {
2932 dev_info(&h->pdev->dev, "Map%u:\n", map);
2933 row_cnt = le16_to_cpu(map_buff->row_cnt);
2934 for (row = 0; row < row_cnt; row++) {
2935 dev_info(&h->pdev->dev, " Row%u:\n", row);
2937 le16_to_cpu(map_buff->data_disks_per_row);
2938 for (col = 0; col < disks_per_row; col++, dd++)
2939 dev_info(&h->pdev->dev,
2940 " D%02u: h=0x%04x xor=%u,%u\n",
2941 col, dd->ioaccel_handle,
2942 dd->xor_mult[0], dd->xor_mult[1]);
2944 le16_to_cpu(map_buff->metadata_disks_per_row);
2945 for (col = 0; col < disks_per_row; col++, dd++)
2946 dev_info(&h->pdev->dev,
2947 " M%02u: h=0x%04x xor=%u,%u\n",
2948 col, dd->ioaccel_handle,
2949 dd->xor_mult[0], dd->xor_mult[1]);
2954 static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h,
2955 __attribute__((unused)) int rc,
2956 __attribute__((unused)) struct raid_map_data *map_buff)
2961 static int hpsa_get_raid_map(struct ctlr_info *h,
2962 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
2965 struct CommandList *c;
2966 struct ErrorInfo *ei;
2970 if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map,
2971 sizeof(this_device->raid_map), 0,
2972 scsi3addr, TYPE_CMD)) {
2973 dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n");
2977 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
2978 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
2982 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
2983 hpsa_scsi_interpret_error(h, c);
2989 /* @todo in the future, dynamically allocate RAID map memory */
2990 if (le32_to_cpu(this_device->raid_map.structure_size) >
2991 sizeof(this_device->raid_map)) {
2992 dev_warn(&h->pdev->dev, "RAID map size is too large!\n");
2995 hpsa_debug_map_buff(h, rc, &this_device->raid_map);
3002 static int hpsa_bmic_id_physical_device(struct ctlr_info *h,
3003 unsigned char scsi3addr[], u16 bmic_device_index,
3004 struct bmic_identify_physical_device *buf, size_t bufsize)
3007 struct CommandList *c;
3008 struct ErrorInfo *ei;
3011 rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize,
3012 0, RAID_CTLR_LUNID, TYPE_CMD);
3016 c->Request.CDB[2] = bmic_device_index & 0xff;
3017 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3019 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE,
3022 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3023 hpsa_scsi_interpret_error(h, c);
3031 static int hpsa_vpd_page_supported(struct ctlr_info *h,
3032 unsigned char scsi3addr[], u8 page)
3037 unsigned char *buf, bufsize;
3039 buf = kzalloc(256, GFP_KERNEL);
3043 /* Get the size of the page list first */
3044 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3045 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3046 buf, HPSA_VPD_HEADER_SZ);
3048 goto exit_unsupported;
3050 if ((pages + HPSA_VPD_HEADER_SZ) <= 255)
3051 bufsize = pages + HPSA_VPD_HEADER_SZ;
3055 /* Get the whole VPD page list */
3056 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3057 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3060 goto exit_unsupported;
3063 for (i = 1; i <= pages; i++)
3064 if (buf[3 + i] == page)
3065 goto exit_supported;
3074 static void hpsa_get_ioaccel_status(struct ctlr_info *h,
3075 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3081 this_device->offload_config = 0;
3082 this_device->offload_enabled = 0;
3083 this_device->offload_to_be_enabled = 0;
3085 buf = kzalloc(64, GFP_KERNEL);
3088 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS))
3090 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3091 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64);
3095 #define IOACCEL_STATUS_BYTE 4
3096 #define OFFLOAD_CONFIGURED_BIT 0x01
3097 #define OFFLOAD_ENABLED_BIT 0x02
3098 ioaccel_status = buf[IOACCEL_STATUS_BYTE];
3099 this_device->offload_config =
3100 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
3101 if (this_device->offload_config) {
3102 this_device->offload_enabled =
3103 !!(ioaccel_status & OFFLOAD_ENABLED_BIT);
3104 if (hpsa_get_raid_map(h, scsi3addr, this_device))
3105 this_device->offload_enabled = 0;
3107 this_device->offload_to_be_enabled = this_device->offload_enabled;
3113 /* Get the device id from inquiry page 0x83 */
3114 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
3115 unsigned char *device_id, int buflen)
3122 buf = kzalloc(64, GFP_KERNEL);
3125 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0x83, buf, 64);
3127 memcpy(device_id, &buf[8], buflen);
3132 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
3133 void *buf, int bufsize,
3134 int extended_response)
3137 struct CommandList *c;
3138 unsigned char scsi3addr[8];
3139 struct ErrorInfo *ei;
3143 /* address the controller */
3144 memset(scsi3addr, 0, sizeof(scsi3addr));
3145 if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
3146 buf, bufsize, 0, scsi3addr, TYPE_CMD)) {
3150 if (extended_response)
3151 c->Request.CDB[1] = extended_response;
3152 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3153 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
3157 if (ei->CommandStatus != 0 &&
3158 ei->CommandStatus != CMD_DATA_UNDERRUN) {
3159 hpsa_scsi_interpret_error(h, c);
3162 struct ReportLUNdata *rld = buf;
3164 if (rld->extended_response_flag != extended_response) {
3165 dev_err(&h->pdev->dev,
3166 "report luns requested format %u, got %u\n",
3168 rld->extended_response_flag);
3177 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
3178 struct ReportExtendedLUNdata *buf, int bufsize)
3180 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize,
3181 HPSA_REPORT_PHYS_EXTENDED);
3184 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
3185 struct ReportLUNdata *buf, int bufsize)
3187 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
3190 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
3191 int bus, int target, int lun)
3194 device->target = target;
3198 /* Use VPD inquiry to get details of volume status */
3199 static int hpsa_get_volume_status(struct ctlr_info *h,
3200 unsigned char scsi3addr[])
3207 buf = kzalloc(64, GFP_KERNEL);
3209 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3211 /* Does controller have VPD for logical volume status? */
3212 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS))
3215 /* Get the size of the VPD return buffer */
3216 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3217 buf, HPSA_VPD_HEADER_SZ);
3222 /* Now get the whole VPD buffer */
3223 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3224 buf, size + HPSA_VPD_HEADER_SZ);
3227 status = buf[4]; /* status byte */
3233 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3236 /* Determine offline status of a volume.
3239 * 0xff (offline for unknown reasons)
3240 * # (integer code indicating one of several NOT READY states
3241 * describing why a volume is to be kept offline)
3243 static int hpsa_volume_offline(struct ctlr_info *h,
3244 unsigned char scsi3addr[])
3246 struct CommandList *c;
3247 unsigned char *sense;
3248 u8 sense_key, asc, ascq;
3253 #define ASC_LUN_NOT_READY 0x04
3254 #define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04
3255 #define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02
3259 (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD);
3260 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
3265 sense = c->err_info->SenseInfo;
3266 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
3267 sense_len = sizeof(c->err_info->SenseInfo);
3269 sense_len = c->err_info->SenseLen;
3270 decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq);
3271 cmd_status = c->err_info->CommandStatus;
3272 scsi_status = c->err_info->ScsiStatus;
3274 /* Is the volume 'not ready'? */
3275 if (cmd_status != CMD_TARGET_STATUS ||
3276 scsi_status != SAM_STAT_CHECK_CONDITION ||
3277 sense_key != NOT_READY ||
3278 asc != ASC_LUN_NOT_READY) {
3282 /* Determine the reason for not ready state */
3283 ldstat = hpsa_get_volume_status(h, scsi3addr);
3285 /* Keep volume offline in certain cases: */
3287 case HPSA_LV_UNDERGOING_ERASE:
3288 case HPSA_LV_NOT_AVAILABLE:
3289 case HPSA_LV_UNDERGOING_RPI:
3290 case HPSA_LV_PENDING_RPI:
3291 case HPSA_LV_ENCRYPTED_NO_KEY:
3292 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
3293 case HPSA_LV_UNDERGOING_ENCRYPTION:
3294 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
3295 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
3297 case HPSA_VPD_LV_STATUS_UNSUPPORTED:
3298 /* If VPD status page isn't available,
3299 * use ASC/ASCQ to determine state
3301 if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) ||
3302 (ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ))
3312 * Find out if a logical device supports aborts by simply trying one.
3313 * Smart Array may claim not to support aborts on logical drives, but
3314 * if a MSA2000 * is connected, the drives on that will be presented
3315 * by the Smart Array as logical drives, and aborts may be sent to
3316 * those devices successfully. So the simplest way to find out is
3317 * to simply try an abort and see how the device responds.
3319 static int hpsa_device_supports_aborts(struct ctlr_info *h,
3320 unsigned char *scsi3addr)
3322 struct CommandList *c;
3323 struct ErrorInfo *ei;
3326 u64 tag = (u64) -1; /* bogus tag */
3328 /* Assume that physical devices support aborts */
3329 if (!is_logical_dev_addr_mode(scsi3addr))
3334 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &tag, 0, 0, scsi3addr, TYPE_MSG);
3335 (void) hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
3336 /* no unmap needed here because no data xfer. */
3338 switch (ei->CommandStatus) {
3342 case CMD_UNABORTABLE:
3343 case CMD_ABORT_FAILED:
3346 case CMD_TMF_STATUS:
3347 rc = hpsa_evaluate_tmf_status(h, c);
3357 static int hpsa_update_device_info(struct ctlr_info *h,
3358 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device,
3359 unsigned char *is_OBDR_device)
3362 #define OBDR_SIG_OFFSET 43
3363 #define OBDR_TAPE_SIG "$DR-10"
3364 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
3365 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
3367 unsigned char *inq_buff;
3368 unsigned char *obdr_sig;
3371 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
3377 /* Do an inquiry to the device to see what it is. */
3378 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
3379 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
3380 /* Inquiry failed (msg printed already) */
3381 dev_err(&h->pdev->dev,
3382 "hpsa_update_device_info: inquiry failed\n");
3387 this_device->devtype = (inq_buff[0] & 0x1f);
3388 memcpy(this_device->scsi3addr, scsi3addr, 8);
3389 memcpy(this_device->vendor, &inq_buff[8],
3390 sizeof(this_device->vendor));
3391 memcpy(this_device->model, &inq_buff[16],
3392 sizeof(this_device->model));
3393 memset(this_device->device_id, 0,
3394 sizeof(this_device->device_id));
3395 hpsa_get_device_id(h, scsi3addr, this_device->device_id,
3396 sizeof(this_device->device_id));
3398 if (this_device->devtype == TYPE_DISK &&
3399 is_logical_dev_addr_mode(scsi3addr)) {
3402 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
3403 if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC)
3404 hpsa_get_ioaccel_status(h, scsi3addr, this_device);
3405 volume_offline = hpsa_volume_offline(h, scsi3addr);
3406 if (volume_offline < 0 || volume_offline > 0xff)
3407 volume_offline = HPSA_VPD_LV_STATUS_UNSUPPORTED;
3408 this_device->volume_offline = volume_offline & 0xff;
3410 this_device->raid_level = RAID_UNKNOWN;
3411 this_device->offload_config = 0;
3412 this_device->offload_enabled = 0;
3413 this_device->offload_to_be_enabled = 0;
3414 this_device->hba_ioaccel_enabled = 0;
3415 this_device->volume_offline = 0;
3416 this_device->queue_depth = h->nr_cmds;
3419 if (is_OBDR_device) {
3420 /* See if this is a One-Button-Disaster-Recovery device
3421 * by looking for "$DR-10" at offset 43 in inquiry data.
3423 obdr_sig = &inq_buff[OBDR_SIG_OFFSET];
3424 *is_OBDR_device = (this_device->devtype == TYPE_ROM &&
3425 strncmp(obdr_sig, OBDR_TAPE_SIG,
3426 OBDR_SIG_LEN) == 0);
3436 static void hpsa_update_device_supports_aborts(struct ctlr_info *h,
3437 struct hpsa_scsi_dev_t *dev, u8 *scsi3addr)
3439 unsigned long flags;
3442 * See if this device supports aborts. If we already know
3443 * the device, we already know if it supports aborts, otherwise
3444 * we have to find out if it supports aborts by trying one.
3446 spin_lock_irqsave(&h->devlock, flags);
3447 rc = hpsa_scsi_find_entry(dev, h->dev, h->ndevices, &entry);
3448 if ((rc == DEVICE_SAME || rc == DEVICE_UPDATED) &&
3449 entry >= 0 && entry < h->ndevices) {
3450 dev->supports_aborts = h->dev[entry]->supports_aborts;
3451 spin_unlock_irqrestore(&h->devlock, flags);
3453 spin_unlock_irqrestore(&h->devlock, flags);
3454 dev->supports_aborts =
3455 hpsa_device_supports_aborts(h, scsi3addr);
3456 if (dev->supports_aborts < 0)
3457 dev->supports_aborts = 0;
3461 static unsigned char *ext_target_model[] = {
3471 static int is_ext_target(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
3475 for (i = 0; ext_target_model[i]; i++)
3476 if (strncmp(device->model, ext_target_model[i],
3477 strlen(ext_target_model[i])) == 0)
3482 /* Helper function to assign bus, target, lun mapping of devices.
3483 * Puts non-external target logical volumes on bus 0, external target logical
3484 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
3485 * Logical drive target and lun are assigned at this time, but
3486 * physical device lun and target assignment are deferred (assigned
3487 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
3489 static void figure_bus_target_lun(struct ctlr_info *h,
3490 u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device)
3492 u32 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
3494 if (!is_logical_dev_addr_mode(lunaddrbytes)) {
3495 /* physical device, target and lun filled in later */
3496 if (is_hba_lunid(lunaddrbytes))
3497 hpsa_set_bus_target_lun(device, 3, 0, lunid & 0x3fff);
3499 /* defer target, lun assignment for physical devices */
3500 hpsa_set_bus_target_lun(device, 2, -1, -1);
3503 /* It's a logical device */
3504 if (is_ext_target(h, device)) {
3505 /* external target way, put logicals on bus 1
3506 * and match target/lun numbers box
3507 * reports, other smart array, bus 0, target 0, match lunid
3509 hpsa_set_bus_target_lun(device,
3510 1, (lunid >> 16) & 0x3fff, lunid & 0x00ff);
3513 hpsa_set_bus_target_lun(device, 0, 0, lunid & 0x3fff);
3517 * If there is no lun 0 on a target, linux won't find any devices.
3518 * For the external targets (arrays), we have to manually detect the enclosure
3519 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
3520 * it for some reason. *tmpdevice is the target we're adding,
3521 * this_device is a pointer into the current element of currentsd[]
3522 * that we're building up in update_scsi_devices(), below.
3523 * lunzerobits is a bitmap that tracks which targets already have a
3525 * Returns 1 if an enclosure was added, 0 if not.
3527 static int add_ext_target_dev(struct ctlr_info *h,
3528 struct hpsa_scsi_dev_t *tmpdevice,
3529 struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes,
3530 unsigned long lunzerobits[], int *n_ext_target_devs)
3532 unsigned char scsi3addr[8];
3534 if (test_bit(tmpdevice->target, lunzerobits))
3535 return 0; /* There is already a lun 0 on this target. */
3537 if (!is_logical_dev_addr_mode(lunaddrbytes))
3538 return 0; /* It's the logical targets that may lack lun 0. */
3540 if (!is_ext_target(h, tmpdevice))
3541 return 0; /* Only external target devices have this problem. */
3543 if (tmpdevice->lun == 0) /* if lun is 0, then we have a lun 0. */
3546 memset(scsi3addr, 0, 8);
3547 scsi3addr[3] = tmpdevice->target;
3548 if (is_hba_lunid(scsi3addr))
3549 return 0; /* Don't add the RAID controller here. */
3551 if (is_scsi_rev_5(h))
3552 return 0; /* p1210m doesn't need to do this. */
3554 if (*n_ext_target_devs >= MAX_EXT_TARGETS) {
3555 dev_warn(&h->pdev->dev, "Maximum number of external "
3556 "target devices exceeded. Check your hardware "
3561 if (hpsa_update_device_info(h, scsi3addr, this_device, NULL))
3563 (*n_ext_target_devs)++;
3564 hpsa_set_bus_target_lun(this_device,
3565 tmpdevice->bus, tmpdevice->target, 0);
3566 hpsa_update_device_supports_aborts(h, this_device, scsi3addr);
3567 set_bit(tmpdevice->target, lunzerobits);
3572 * Get address of physical disk used for an ioaccel2 mode command:
3573 * 1. Extract ioaccel2 handle from the command.
3574 * 2. Find a matching ioaccel2 handle from list of physical disks.
3576 * 1 and set scsi3addr to address of matching physical
3577 * 0 if no matching physical disk was found.
3579 static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h,
3580 struct CommandList *ioaccel2_cmd_to_abort, unsigned char *scsi3addr)
3582 struct io_accel2_cmd *c2 =
3583 &h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex];
3584 unsigned long flags;
3587 spin_lock_irqsave(&h->devlock, flags);
3588 for (i = 0; i < h->ndevices; i++)
3589 if (h->dev[i]->ioaccel_handle == le32_to_cpu(c2->scsi_nexus)) {
3590 memcpy(scsi3addr, h->dev[i]->scsi3addr,
3591 sizeof(h->dev[i]->scsi3addr));
3592 spin_unlock_irqrestore(&h->devlock, flags);
3595 spin_unlock_irqrestore(&h->devlock, flags);
3600 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
3601 * logdev. The number of luns in physdev and logdev are returned in
3602 * *nphysicals and *nlogicals, respectively.
3603 * Returns 0 on success, -1 otherwise.
3605 static int hpsa_gather_lun_info(struct ctlr_info *h,
3606 struct ReportExtendedLUNdata *physdev, u32 *nphysicals,
3607 struct ReportLUNdata *logdev, u32 *nlogicals)
3609 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
3610 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
3613 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24;
3614 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
3615 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n",
3616 HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN);
3617 *nphysicals = HPSA_MAX_PHYS_LUN;
3619 if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) {
3620 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
3623 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
3624 /* Reject Logicals in excess of our max capability. */
3625 if (*nlogicals > HPSA_MAX_LUN) {
3626 dev_warn(&h->pdev->dev,
3627 "maximum logical LUNs (%d) exceeded. "
3628 "%d LUNs ignored.\n", HPSA_MAX_LUN,
3629 *nlogicals - HPSA_MAX_LUN);
3630 *nlogicals = HPSA_MAX_LUN;
3632 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
3633 dev_warn(&h->pdev->dev,
3634 "maximum logical + physical LUNs (%d) exceeded. "
3635 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
3636 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
3637 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
3642 static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position,
3643 int i, int nphysicals, int nlogicals,
3644 struct ReportExtendedLUNdata *physdev_list,
3645 struct ReportLUNdata *logdev_list)
3647 /* Helper function, figure out where the LUN ID info is coming from
3648 * given index i, lists of physical and logical devices, where in
3649 * the list the raid controller is supposed to appear (first or last)
3652 int logicals_start = nphysicals + (raid_ctlr_position == 0);
3653 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);
3655 if (i == raid_ctlr_position)
3656 return RAID_CTLR_LUNID;
3658 if (i < logicals_start)
3659 return &physdev_list->LUN[i -
3660 (raid_ctlr_position == 0)].lunid[0];
3662 if (i < last_device)
3663 return &logdev_list->LUN[i - nphysicals -
3664 (raid_ctlr_position == 0)][0];
3669 /* get physical drive ioaccel handle and queue depth */
3670 static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h,
3671 struct hpsa_scsi_dev_t *dev,
3673 struct bmic_identify_physical_device *id_phys)
3676 struct ext_report_lun_entry *rle =
3677 (struct ext_report_lun_entry *) lunaddrbytes;
3679 dev->ioaccel_handle = rle->ioaccel_handle;
3680 if (PHYS_IOACCEL(lunaddrbytes) && dev->ioaccel_handle)
3681 dev->hba_ioaccel_enabled = 1;
3682 memset(id_phys, 0, sizeof(*id_phys));
3683 rc = hpsa_bmic_id_physical_device(h, lunaddrbytes,
3684 GET_BMIC_DRIVE_NUMBER(lunaddrbytes), id_phys,
3687 /* Reserve space for FW operations */
3688 #define DRIVE_CMDS_RESERVED_FOR_FW 2
3689 #define DRIVE_QUEUE_DEPTH 7
3691 le16_to_cpu(id_phys->current_queue_depth_limit) -
3692 DRIVE_CMDS_RESERVED_FOR_FW;
3694 dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */
3697 static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device,
3699 struct bmic_identify_physical_device *id_phys)
3701 if (PHYS_IOACCEL(lunaddrbytes)
3702 && this_device->ioaccel_handle)
3703 this_device->hba_ioaccel_enabled = 1;
3705 memcpy(&this_device->active_path_index,
3706 &id_phys->active_path_number,
3707 sizeof(this_device->active_path_index));
3708 memcpy(&this_device->path_map,
3709 &id_phys->redundant_path_present_map,
3710 sizeof(this_device->path_map));
3711 memcpy(&this_device->box,
3712 &id_phys->alternate_paths_phys_box_on_port,
3713 sizeof(this_device->box));
3714 memcpy(&this_device->phys_connector,
3715 &id_phys->alternate_paths_phys_connector,
3716 sizeof(this_device->phys_connector));
3717 memcpy(&this_device->bay,
3718 &id_phys->phys_bay_in_box,
3719 sizeof(this_device->bay));
3722 static void hpsa_update_scsi_devices(struct ctlr_info *h)
3724 /* the idea here is we could get notified
3725 * that some devices have changed, so we do a report
3726 * physical luns and report logical luns cmd, and adjust
3727 * our list of devices accordingly.
3729 * The scsi3addr's of devices won't change so long as the
3730 * adapter is not reset. That means we can rescan and
3731 * tell which devices we already know about, vs. new
3732 * devices, vs. disappearing devices.
3734 struct ReportExtendedLUNdata *physdev_list = NULL;
3735 struct ReportLUNdata *logdev_list = NULL;
3736 struct bmic_identify_physical_device *id_phys = NULL;
3739 u32 ndev_allocated = 0;
3740 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
3742 int i, n_ext_target_devs, ndevs_to_allocate;
3743 int raid_ctlr_position;
3744 DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);
3746 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL);
3747 physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL);
3748 logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL);
3749 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
3750 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
3752 if (!currentsd || !physdev_list || !logdev_list ||
3753 !tmpdevice || !id_phys) {
3754 dev_err(&h->pdev->dev, "out of memory\n");
3757 memset(lunzerobits, 0, sizeof(lunzerobits));
3759 h->drv_req_rescan = 0; /* cancel scheduled rescan - we're doing it. */
3761 if (hpsa_gather_lun_info(h, physdev_list, &nphysicals,
3762 logdev_list, &nlogicals)) {
3763 h->drv_req_rescan = 1;
3767 /* We might see up to the maximum number of logical and physical disks
3768 * plus external target devices, and a device for the local RAID
3771 ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1;
3773 /* Allocate the per device structures */
3774 for (i = 0; i < ndevs_to_allocate; i++) {
3775 if (i >= HPSA_MAX_DEVICES) {
3776 dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded."
3777 " %d devices ignored.\n", HPSA_MAX_DEVICES,
3778 ndevs_to_allocate - HPSA_MAX_DEVICES);
3782 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
3783 if (!currentsd[i]) {
3784 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n",
3785 __FILE__, __LINE__);
3786 h->drv_req_rescan = 1;
3792 if (is_scsi_rev_5(h))
3793 raid_ctlr_position = 0;
3795 raid_ctlr_position = nphysicals + nlogicals;
3797 /* adjust our table of devices */
3798 n_ext_target_devs = 0;
3799 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
3800 u8 *lunaddrbytes, is_OBDR = 0;
3803 /* Figure out where the LUN ID info is coming from */
3804 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
3805 i, nphysicals, nlogicals, physdev_list, logdev_list);
3807 /* skip masked non-disk devices */
3808 if (MASKED_DEVICE(lunaddrbytes))
3809 if (i < nphysicals + (raid_ctlr_position == 0) &&
3810 NON_DISK_PHYS_DEV(lunaddrbytes))
3813 /* Get device type, vendor, model, device id */
3814 rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
3816 if (rc == -ENOMEM) {
3817 dev_warn(&h->pdev->dev,
3818 "Out of memory, rescan deferred.\n");
3819 h->drv_req_rescan = 1;
3823 dev_warn(&h->pdev->dev,
3824 "Inquiry failed, skipping device.\n");
3828 figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
3829 hpsa_update_device_supports_aborts(h, tmpdevice, lunaddrbytes);
3830 this_device = currentsd[ncurrent];
3833 * For external target devices, we have to insert a LUN 0 which
3834 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
3835 * is nonetheless an enclosure device there. We have to
3836 * present that otherwise linux won't find anything if
3837 * there is no lun 0.
3839 if (add_ext_target_dev(h, tmpdevice, this_device,
3840 lunaddrbytes, lunzerobits,
3841 &n_ext_target_devs)) {
3843 this_device = currentsd[ncurrent];
3846 *this_device = *tmpdevice;
3848 /* do not expose masked devices */
3849 if (MASKED_DEVICE(lunaddrbytes) &&
3850 i < nphysicals + (raid_ctlr_position == 0)) {
3851 this_device->expose_state = HPSA_DO_NOT_EXPOSE;
3853 this_device->expose_state =
3854 HPSA_SG_ATTACH | HPSA_ULD_ATTACH;
3857 switch (this_device->devtype) {
3859 /* We don't *really* support actual CD-ROM devices,
3860 * just "One Button Disaster Recovery" tape drive
3861 * which temporarily pretends to be a CD-ROM drive.
3862 * So we check that the device is really an OBDR tape
3863 * device by checking for "$DR-10" in bytes 43-48 of
3870 if (i < nphysicals + (raid_ctlr_position == 0)) {
3871 /* The disk is in HBA mode. */
3872 /* Never use RAID mapper in HBA mode. */
3873 this_device->offload_enabled = 0;
3874 hpsa_get_ioaccel_drive_info(h, this_device,
3875 lunaddrbytes, id_phys);
3876 hpsa_get_path_info(this_device, lunaddrbytes,
3882 case TYPE_MEDIUM_CHANGER:
3883 case TYPE_ENCLOSURE:
3887 /* Only present the Smartarray HBA as a RAID controller.
3888 * If it's a RAID controller other than the HBA itself
3889 * (an external RAID controller, MSA500 or similar)
3892 if (!is_hba_lunid(lunaddrbytes))
3899 if (ncurrent >= HPSA_MAX_DEVICES)
3902 adjust_hpsa_scsi_table(h, currentsd, ncurrent);
3905 for (i = 0; i < ndev_allocated; i++)
3906 kfree(currentsd[i]);
3908 kfree(physdev_list);
3913 static void hpsa_set_sg_descriptor(struct SGDescriptor *desc,
3914 struct scatterlist *sg)
3916 u64 addr64 = (u64) sg_dma_address(sg);
3917 unsigned int len = sg_dma_len(sg);
3919 desc->Addr = cpu_to_le64(addr64);
3920 desc->Len = cpu_to_le32(len);
3925 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
3926 * dma mapping and fills in the scatter gather entries of the
3929 static int hpsa_scatter_gather(struct ctlr_info *h,
3930 struct CommandList *cp,
3931 struct scsi_cmnd *cmd)
3933 struct scatterlist *sg;
3934 int use_sg, i, sg_limit, chained, last_sg;
3935 struct SGDescriptor *curr_sg;
3937 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
3939 use_sg = scsi_dma_map(cmd);
3944 goto sglist_finished;
3947 * If the number of entries is greater than the max for a single list,
3948 * then we have a chained list; we will set up all but one entry in the
3949 * first list (the last entry is saved for link information);
3950 * otherwise, we don't have a chained list and we'll set up at each of
3951 * the entries in the one list.
3954 chained = use_sg > h->max_cmd_sg_entries;
3955 sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg;
3956 last_sg = scsi_sg_count(cmd) - 1;
3957 scsi_for_each_sg(cmd, sg, sg_limit, i) {
3958 hpsa_set_sg_descriptor(curr_sg, sg);
3964 * Continue with the chained list. Set curr_sg to the chained
3965 * list. Modify the limit to the total count less the entries
3966 * we've already set up. Resume the scan at the list entry
3967 * where the previous loop left off.
3969 curr_sg = h->cmd_sg_list[cp->cmdindex];
3970 sg_limit = use_sg - sg_limit;
3971 for_each_sg(sg, sg, sg_limit, i) {
3972 hpsa_set_sg_descriptor(curr_sg, sg);
3977 /* Back the pointer up to the last entry and mark it as "last". */
3978 (curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST);
3980 if (use_sg + chained > h->maxSG)
3981 h->maxSG = use_sg + chained;
3984 cp->Header.SGList = h->max_cmd_sg_entries;
3985 cp->Header.SGTotal = cpu_to_le16(use_sg + 1);
3986 if (hpsa_map_sg_chain_block(h, cp)) {
3987 scsi_dma_unmap(cmd);
3995 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */
3996 cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */
4000 #define IO_ACCEL_INELIGIBLE (1)
4001 static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len)
4007 /* Perform some CDB fixups if needed using 10 byte reads/writes only */
4014 if (*cdb_len == 6) {
4015 block = get_unaligned_be16(&cdb[2]);
4020 BUG_ON(*cdb_len != 12);
4021 block = get_unaligned_be32(&cdb[2]);
4022 block_cnt = get_unaligned_be32(&cdb[6]);
4024 if (block_cnt > 0xffff)
4025 return IO_ACCEL_INELIGIBLE;
4027 cdb[0] = is_write ? WRITE_10 : READ_10;
4029 cdb[2] = (u8) (block >> 24);
4030 cdb[3] = (u8) (block >> 16);
4031 cdb[4] = (u8) (block >> 8);
4032 cdb[5] = (u8) (block);
4034 cdb[7] = (u8) (block_cnt >> 8);
4035 cdb[8] = (u8) (block_cnt);
4043 static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h,
4044 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4045 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4047 struct scsi_cmnd *cmd = c->scsi_cmd;
4048 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
4050 unsigned int total_len = 0;
4051 struct scatterlist *sg;
4054 struct SGDescriptor *curr_sg;
4055 u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE;
4057 /* TODO: implement chaining support */
4058 if (scsi_sg_count(cmd) > h->ioaccel_maxsg) {
4059 atomic_dec(&phys_disk->ioaccel_cmds_out);
4060 return IO_ACCEL_INELIGIBLE;
4063 BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX);
4065 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4066 atomic_dec(&phys_disk->ioaccel_cmds_out);
4067 return IO_ACCEL_INELIGIBLE;
4070 c->cmd_type = CMD_IOACCEL1;
4072 /* Adjust the DMA address to point to the accelerated command buffer */
4073 c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle +
4074 (c->cmdindex * sizeof(*cp));
4075 BUG_ON(c->busaddr & 0x0000007F);
4077 use_sg = scsi_dma_map(cmd);
4079 atomic_dec(&phys_disk->ioaccel_cmds_out);
4085 scsi_for_each_sg(cmd, sg, use_sg, i) {
4086 addr64 = (u64) sg_dma_address(sg);
4087 len = sg_dma_len(sg);
4089 curr_sg->Addr = cpu_to_le64(addr64);
4090 curr_sg->Len = cpu_to_le32(len);
4091 curr_sg->Ext = cpu_to_le32(0);
4094 (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST);
4096 switch (cmd->sc_data_direction) {
4098 control |= IOACCEL1_CONTROL_DATA_OUT;
4100 case DMA_FROM_DEVICE:
4101 control |= IOACCEL1_CONTROL_DATA_IN;
4104 control |= IOACCEL1_CONTROL_NODATAXFER;
4107 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4108 cmd->sc_data_direction);
4113 control |= IOACCEL1_CONTROL_NODATAXFER;
4116 c->Header.SGList = use_sg;
4117 /* Fill out the command structure to submit */
4118 cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF);
4119 cp->transfer_len = cpu_to_le32(total_len);
4120 cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ |
4121 (cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK));
4122 cp->control = cpu_to_le32(control);
4123 memcpy(cp->CDB, cdb, cdb_len);
4124 memcpy(cp->CISS_LUN, scsi3addr, 8);
4125 /* Tag was already set at init time. */
4126 enqueue_cmd_and_start_io(h, c);
4131 * Queue a command directly to a device behind the controller using the
4132 * I/O accelerator path.
4134 static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h,
4135 struct CommandList *c)
4137 struct scsi_cmnd *cmd = c->scsi_cmd;
4138 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4142 return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle,
4143 cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev);
4147 * Set encryption parameters for the ioaccel2 request
4149 static void set_encrypt_ioaccel2(struct ctlr_info *h,
4150 struct CommandList *c, struct io_accel2_cmd *cp)
4152 struct scsi_cmnd *cmd = c->scsi_cmd;
4153 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4154 struct raid_map_data *map = &dev->raid_map;
4157 /* Are we doing encryption on this device */
4158 if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON))
4160 /* Set the data encryption key index. */
4161 cp->dekindex = map->dekindex;
4163 /* Set the encryption enable flag, encoded into direction field. */
4164 cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK;
4166 /* Set encryption tweak values based on logical block address
4167 * If block size is 512, tweak value is LBA.
4168 * For other block sizes, tweak is (LBA * block size)/ 512)
4170 switch (cmd->cmnd[0]) {
4171 /* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */
4174 first_block = get_unaligned_be16(&cmd->cmnd[2]);
4178 /* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */
4181 first_block = get_unaligned_be32(&cmd->cmnd[2]);
4185 first_block = get_unaligned_be64(&cmd->cmnd[2]);
4188 dev_err(&h->pdev->dev,
4189 "ERROR: %s: size (0x%x) not supported for encryption\n",
4190 __func__, cmd->cmnd[0]);
4195 if (le32_to_cpu(map->volume_blk_size) != 512)
4196 first_block = first_block *
4197 le32_to_cpu(map->volume_blk_size)/512;
4199 cp->tweak_lower = cpu_to_le32(first_block);
4200 cp->tweak_upper = cpu_to_le32(first_block >> 32);
4203 static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h,
4204 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4205 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4207 struct scsi_cmnd *cmd = c->scsi_cmd;
4208 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
4209 struct ioaccel2_sg_element *curr_sg;
4211 struct scatterlist *sg;
4216 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4218 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4219 atomic_dec(&phys_disk->ioaccel_cmds_out);
4220 return IO_ACCEL_INELIGIBLE;
4223 c->cmd_type = CMD_IOACCEL2;
4224 /* Adjust the DMA address to point to the accelerated command buffer */
4225 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
4226 (c->cmdindex * sizeof(*cp));
4227 BUG_ON(c->busaddr & 0x0000007F);
4229 memset(cp, 0, sizeof(*cp));
4230 cp->IU_type = IOACCEL2_IU_TYPE;
4232 use_sg = scsi_dma_map(cmd);
4234 atomic_dec(&phys_disk->ioaccel_cmds_out);
4240 if (use_sg > h->ioaccel_maxsg) {
4241 addr64 = le64_to_cpu(
4242 h->ioaccel2_cmd_sg_list[c->cmdindex]->address);
4243 curr_sg->address = cpu_to_le64(addr64);
4244 curr_sg->length = 0;
4245 curr_sg->reserved[0] = 0;
4246 curr_sg->reserved[1] = 0;
4247 curr_sg->reserved[2] = 0;
4248 curr_sg->chain_indicator = 0x80;
4250 curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex];
4252 scsi_for_each_sg(cmd, sg, use_sg, i) {
4253 addr64 = (u64) sg_dma_address(sg);
4254 len = sg_dma_len(sg);
4256 curr_sg->address = cpu_to_le64(addr64);
4257 curr_sg->length = cpu_to_le32(len);
4258 curr_sg->reserved[0] = 0;
4259 curr_sg->reserved[1] = 0;
4260 curr_sg->reserved[2] = 0;
4261 curr_sg->chain_indicator = 0;
4265 switch (cmd->sc_data_direction) {
4267 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4268 cp->direction |= IOACCEL2_DIR_DATA_OUT;
4270 case DMA_FROM_DEVICE:
4271 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4272 cp->direction |= IOACCEL2_DIR_DATA_IN;
4275 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4276 cp->direction |= IOACCEL2_DIR_NO_DATA;
4279 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4280 cmd->sc_data_direction);
4285 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4286 cp->direction |= IOACCEL2_DIR_NO_DATA;
4289 /* Set encryption parameters, if necessary */
4290 set_encrypt_ioaccel2(h, c, cp);
4292 cp->scsi_nexus = cpu_to_le32(ioaccel_handle);
4293 cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT);
4294 memcpy(cp->cdb, cdb, sizeof(cp->cdb));
4296 cp->data_len = cpu_to_le32(total_len);
4297 cp->err_ptr = cpu_to_le64(c->busaddr +
4298 offsetof(struct io_accel2_cmd, error_data));
4299 cp->err_len = cpu_to_le32(sizeof(cp->error_data));
4301 /* fill in sg elements */
4302 if (use_sg > h->ioaccel_maxsg) {
4304 if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) {
4305 atomic_dec(&phys_disk->ioaccel_cmds_out);
4306 scsi_dma_unmap(cmd);
4310 cp->sg_count = (u8) use_sg;
4312 enqueue_cmd_and_start_io(h, c);
4317 * Queue a command to the correct I/O accelerator path.
4319 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
4320 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4321 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4323 /* Try to honor the device's queue depth */
4324 if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) >
4325 phys_disk->queue_depth) {
4326 atomic_dec(&phys_disk->ioaccel_cmds_out);
4327 return IO_ACCEL_INELIGIBLE;
4329 if (h->transMethod & CFGTBL_Trans_io_accel1)
4330 return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle,
4331 cdb, cdb_len, scsi3addr,
4334 return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle,
4335 cdb, cdb_len, scsi3addr,
4339 static void raid_map_helper(struct raid_map_data *map,
4340 int offload_to_mirror, u32 *map_index, u32 *current_group)
4342 if (offload_to_mirror == 0) {
4343 /* use physical disk in the first mirrored group. */
4344 *map_index %= le16_to_cpu(map->data_disks_per_row);
4348 /* determine mirror group that *map_index indicates */
4349 *current_group = *map_index /
4350 le16_to_cpu(map->data_disks_per_row);
4351 if (offload_to_mirror == *current_group)
4353 if (*current_group < le16_to_cpu(map->layout_map_count) - 1) {
4354 /* select map index from next group */
4355 *map_index += le16_to_cpu(map->data_disks_per_row);
4358 /* select map index from first group */
4359 *map_index %= le16_to_cpu(map->data_disks_per_row);
4362 } while (offload_to_mirror != *current_group);
4366 * Attempt to perform offload RAID mapping for a logical volume I/O.
4368 static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
4369 struct CommandList *c)
4371 struct scsi_cmnd *cmd = c->scsi_cmd;
4372 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4373 struct raid_map_data *map = &dev->raid_map;
4374 struct raid_map_disk_data *dd = &map->data[0];
4377 u64 first_block, last_block;
4380 u64 first_row, last_row;
4381 u32 first_row_offset, last_row_offset;
4382 u32 first_column, last_column;
4383 u64 r0_first_row, r0_last_row;
4384 u32 r5or6_blocks_per_row;
4385 u64 r5or6_first_row, r5or6_last_row;
4386 u32 r5or6_first_row_offset, r5or6_last_row_offset;
4387 u32 r5or6_first_column, r5or6_last_column;
4388 u32 total_disks_per_row;
4390 u32 first_group, last_group, current_group;
4398 #if BITS_PER_LONG == 32
4401 int offload_to_mirror;
4403 /* check for valid opcode, get LBA and block count */
4404 switch (cmd->cmnd[0]) {
4408 first_block = get_unaligned_be16(&cmd->cmnd[2]);
4409 block_cnt = cmd->cmnd[4];
4417 (((u64) cmd->cmnd[2]) << 24) |
4418 (((u64) cmd->cmnd[3]) << 16) |
4419 (((u64) cmd->cmnd[4]) << 8) |
4422 (((u32) cmd->cmnd[7]) << 8) |
4429 (((u64) cmd->cmnd[2]) << 24) |
4430 (((u64) cmd->cmnd[3]) << 16) |
4431 (((u64) cmd->cmnd[4]) << 8) |
4434 (((u32) cmd->cmnd[6]) << 24) |
4435 (((u32) cmd->cmnd[7]) << 16) |
4436 (((u32) cmd->cmnd[8]) << 8) |
4443 (((u64) cmd->cmnd[2]) << 56) |
4444 (((u64) cmd->cmnd[3]) << 48) |
4445 (((u64) cmd->cmnd[4]) << 40) |
4446 (((u64) cmd->cmnd[5]) << 32) |
4447 (((u64) cmd->cmnd[6]) << 24) |
4448 (((u64) cmd->cmnd[7]) << 16) |
4449 (((u64) cmd->cmnd[8]) << 8) |
4452 (((u32) cmd->cmnd[10]) << 24) |
4453 (((u32) cmd->cmnd[11]) << 16) |
4454 (((u32) cmd->cmnd[12]) << 8) |
4458 return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */
4460 last_block = first_block + block_cnt - 1;
4462 /* check for write to non-RAID-0 */
4463 if (is_write && dev->raid_level != 0)
4464 return IO_ACCEL_INELIGIBLE;
4466 /* check for invalid block or wraparound */
4467 if (last_block >= le64_to_cpu(map->volume_blk_cnt) ||
4468 last_block < first_block)
4469 return IO_ACCEL_INELIGIBLE;
4471 /* calculate stripe information for the request */
4472 blocks_per_row = le16_to_cpu(map->data_disks_per_row) *
4473 le16_to_cpu(map->strip_size);
4474 strip_size = le16_to_cpu(map->strip_size);
4475 #if BITS_PER_LONG == 32
4476 tmpdiv = first_block;
4477 (void) do_div(tmpdiv, blocks_per_row);
4479 tmpdiv = last_block;
4480 (void) do_div(tmpdiv, blocks_per_row);
4482 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
4483 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
4484 tmpdiv = first_row_offset;
4485 (void) do_div(tmpdiv, strip_size);
4486 first_column = tmpdiv;
4487 tmpdiv = last_row_offset;
4488 (void) do_div(tmpdiv, strip_size);
4489 last_column = tmpdiv;
4491 first_row = first_block / blocks_per_row;
4492 last_row = last_block / blocks_per_row;
4493 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
4494 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
4495 first_column = first_row_offset / strip_size;
4496 last_column = last_row_offset / strip_size;
4499 /* if this isn't a single row/column then give to the controller */
4500 if ((first_row != last_row) || (first_column != last_column))
4501 return IO_ACCEL_INELIGIBLE;
4503 /* proceeding with driver mapping */
4504 total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
4505 le16_to_cpu(map->metadata_disks_per_row);
4506 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
4507 le16_to_cpu(map->row_cnt);
4508 map_index = (map_row * total_disks_per_row) + first_column;
4510 switch (dev->raid_level) {
4512 break; /* nothing special to do */
4514 /* Handles load balance across RAID 1 members.
4515 * (2-drive R1 and R10 with even # of drives.)
4516 * Appropriate for SSDs, not optimal for HDDs
4518 BUG_ON(le16_to_cpu(map->layout_map_count) != 2);
4519 if (dev->offload_to_mirror)
4520 map_index += le16_to_cpu(map->data_disks_per_row);
4521 dev->offload_to_mirror = !dev->offload_to_mirror;
4524 /* Handles N-way mirrors (R1-ADM)
4525 * and R10 with # of drives divisible by 3.)
4527 BUG_ON(le16_to_cpu(map->layout_map_count) != 3);
4529 offload_to_mirror = dev->offload_to_mirror;
4530 raid_map_helper(map, offload_to_mirror,
4531 &map_index, ¤t_group);
4532 /* set mirror group to use next time */
4534 (offload_to_mirror >=
4535 le16_to_cpu(map->layout_map_count) - 1)
4536 ? 0 : offload_to_mirror + 1;
4537 dev->offload_to_mirror = offload_to_mirror;
4538 /* Avoid direct use of dev->offload_to_mirror within this
4539 * function since multiple threads might simultaneously
4540 * increment it beyond the range of dev->layout_map_count -1.
4545 if (le16_to_cpu(map->layout_map_count) <= 1)
4548 /* Verify first and last block are in same RAID group */
4549 r5or6_blocks_per_row =
4550 le16_to_cpu(map->strip_size) *
4551 le16_to_cpu(map->data_disks_per_row);
4552 BUG_ON(r5or6_blocks_per_row == 0);
4553 stripesize = r5or6_blocks_per_row *
4554 le16_to_cpu(map->layout_map_count);
4555 #if BITS_PER_LONG == 32
4556 tmpdiv = first_block;
4557 first_group = do_div(tmpdiv, stripesize);
4558 tmpdiv = first_group;
4559 (void) do_div(tmpdiv, r5or6_blocks_per_row);
4560 first_group = tmpdiv;
4561 tmpdiv = last_block;
4562 last_group = do_div(tmpdiv, stripesize);
4563 tmpdiv = last_group;
4564 (void) do_div(tmpdiv, r5or6_blocks_per_row);
4565 last_group = tmpdiv;
4567 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
4568 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
4570 if (first_group != last_group)
4571 return IO_ACCEL_INELIGIBLE;
4573 /* Verify request is in a single row of RAID 5/6 */
4574 #if BITS_PER_LONG == 32
4575 tmpdiv = first_block;
4576 (void) do_div(tmpdiv, stripesize);
4577 first_row = r5or6_first_row = r0_first_row = tmpdiv;
4578 tmpdiv = last_block;
4579 (void) do_div(tmpdiv, stripesize);
4580 r5or6_last_row = r0_last_row = tmpdiv;
4582 first_row = r5or6_first_row = r0_first_row =
4583 first_block / stripesize;
4584 r5or6_last_row = r0_last_row = last_block / stripesize;
4586 if (r5or6_first_row != r5or6_last_row)
4587 return IO_ACCEL_INELIGIBLE;
4590 /* Verify request is in a single column */
4591 #if BITS_PER_LONG == 32
4592 tmpdiv = first_block;
4593 first_row_offset = do_div(tmpdiv, stripesize);
4594 tmpdiv = first_row_offset;
4595 first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row);
4596 r5or6_first_row_offset = first_row_offset;
4597 tmpdiv = last_block;
4598 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
4599 tmpdiv = r5or6_last_row_offset;
4600 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
4601 tmpdiv = r5or6_first_row_offset;
4602 (void) do_div(tmpdiv, map->strip_size);
4603 first_column = r5or6_first_column = tmpdiv;
4604 tmpdiv = r5or6_last_row_offset;
4605 (void) do_div(tmpdiv, map->strip_size);
4606 r5or6_last_column = tmpdiv;
4608 first_row_offset = r5or6_first_row_offset =
4609 (u32)((first_block % stripesize) %
4610 r5or6_blocks_per_row);
4612 r5or6_last_row_offset =
4613 (u32)((last_block % stripesize) %
4614 r5or6_blocks_per_row);
4616 first_column = r5or6_first_column =
4617 r5or6_first_row_offset / le16_to_cpu(map->strip_size);
4619 r5or6_last_row_offset / le16_to_cpu(map->strip_size);
4621 if (r5or6_first_column != r5or6_last_column)
4622 return IO_ACCEL_INELIGIBLE;
4624 /* Request is eligible */
4625 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
4626 le16_to_cpu(map->row_cnt);
4628 map_index = (first_group *
4629 (le16_to_cpu(map->row_cnt) * total_disks_per_row)) +
4630 (map_row * total_disks_per_row) + first_column;
4633 return IO_ACCEL_INELIGIBLE;
4636 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
4637 return IO_ACCEL_INELIGIBLE;
4639 c->phys_disk = dev->phys_disk[map_index];
4641 disk_handle = dd[map_index].ioaccel_handle;
4642 disk_block = le64_to_cpu(map->disk_starting_blk) +
4643 first_row * le16_to_cpu(map->strip_size) +
4644 (first_row_offset - first_column *
4645 le16_to_cpu(map->strip_size));
4646 disk_block_cnt = block_cnt;
4648 /* handle differing logical/physical block sizes */
4649 if (map->phys_blk_shift) {
4650 disk_block <<= map->phys_blk_shift;
4651 disk_block_cnt <<= map->phys_blk_shift;
4653 BUG_ON(disk_block_cnt > 0xffff);
4655 /* build the new CDB for the physical disk I/O */
4656 if (disk_block > 0xffffffff) {
4657 cdb[0] = is_write ? WRITE_16 : READ_16;
4659 cdb[2] = (u8) (disk_block >> 56);
4660 cdb[3] = (u8) (disk_block >> 48);
4661 cdb[4] = (u8) (disk_block >> 40);
4662 cdb[5] = (u8) (disk_block >> 32);
4663 cdb[6] = (u8) (disk_block >> 24);
4664 cdb[7] = (u8) (disk_block >> 16);
4665 cdb[8] = (u8) (disk_block >> 8);
4666 cdb[9] = (u8) (disk_block);
4667 cdb[10] = (u8) (disk_block_cnt >> 24);
4668 cdb[11] = (u8) (disk_block_cnt >> 16);
4669 cdb[12] = (u8) (disk_block_cnt >> 8);
4670 cdb[13] = (u8) (disk_block_cnt);
4675 cdb[0] = is_write ? WRITE_10 : READ_10;
4677 cdb[2] = (u8) (disk_block >> 24);
4678 cdb[3] = (u8) (disk_block >> 16);
4679 cdb[4] = (u8) (disk_block >> 8);
4680 cdb[5] = (u8) (disk_block);
4682 cdb[7] = (u8) (disk_block_cnt >> 8);
4683 cdb[8] = (u8) (disk_block_cnt);
4687 return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len,
4689 dev->phys_disk[map_index]);
4693 * Submit commands down the "normal" RAID stack path
4694 * All callers to hpsa_ciss_submit must check lockup_detected
4695 * beforehand, before (opt.) and after calling cmd_alloc
4697 static int hpsa_ciss_submit(struct ctlr_info *h,
4698 struct CommandList *c, struct scsi_cmnd *cmd,
4699 unsigned char scsi3addr[])
4701 cmd->host_scribble = (unsigned char *) c;
4702 c->cmd_type = CMD_SCSI;
4704 c->Header.ReplyQueue = 0; /* unused in simple mode */
4705 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
4706 c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT));
4708 /* Fill in the request block... */
4710 c->Request.Timeout = 0;
4711 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
4712 c->Request.CDBLen = cmd->cmd_len;
4713 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
4714 switch (cmd->sc_data_direction) {
4716 c->Request.type_attr_dir =
4717 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE);
4719 case DMA_FROM_DEVICE:
4720 c->Request.type_attr_dir =
4721 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ);
4724 c->Request.type_attr_dir =
4725 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE);
4727 case DMA_BIDIRECTIONAL:
4728 /* This can happen if a buggy application does a scsi passthru
4729 * and sets both inlen and outlen to non-zero. ( see
4730 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
4733 c->Request.type_attr_dir =
4734 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD);
4735 /* This is technically wrong, and hpsa controllers should
4736 * reject it with CMD_INVALID, which is the most correct
4737 * response, but non-fibre backends appear to let it
4738 * slide by, and give the same results as if this field
4739 * were set correctly. Either way is acceptable for
4740 * our purposes here.
4746 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4747 cmd->sc_data_direction);
4752 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
4753 hpsa_cmd_resolve_and_free(h, c);
4754 return SCSI_MLQUEUE_HOST_BUSY;
4756 enqueue_cmd_and_start_io(h, c);
4757 /* the cmd'll come back via intr handler in complete_scsi_command() */
4761 static void hpsa_cmd_init(struct ctlr_info *h, int index,
4762 struct CommandList *c)
4764 dma_addr_t cmd_dma_handle, err_dma_handle;
4766 /* Zero out all of commandlist except the last field, refcount */
4767 memset(c, 0, offsetof(struct CommandList, refcount));
4768 c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT));
4769 cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
4770 c->err_info = h->errinfo_pool + index;
4771 memset(c->err_info, 0, sizeof(*c->err_info));
4772 err_dma_handle = h->errinfo_pool_dhandle
4773 + index * sizeof(*c->err_info);
4774 c->cmdindex = index;
4775 c->busaddr = (u32) cmd_dma_handle;
4776 c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle);
4777 c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info));
4779 c->scsi_cmd = SCSI_CMD_IDLE;
4782 static void hpsa_preinitialize_commands(struct ctlr_info *h)
4786 for (i = 0; i < h->nr_cmds; i++) {
4787 struct CommandList *c = h->cmd_pool + i;
4789 hpsa_cmd_init(h, i, c);
4790 atomic_set(&c->refcount, 0);
4794 static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index,
4795 struct CommandList *c)
4797 dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
4799 BUG_ON(c->cmdindex != index);
4801 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
4802 memset(c->err_info, 0, sizeof(*c->err_info));
4803 c->busaddr = (u32) cmd_dma_handle;
4806 static int hpsa_ioaccel_submit(struct ctlr_info *h,
4807 struct CommandList *c, struct scsi_cmnd *cmd,
4808 unsigned char *scsi3addr)
4810 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4811 int rc = IO_ACCEL_INELIGIBLE;
4813 cmd->host_scribble = (unsigned char *) c;
4815 if (dev->offload_enabled) {
4816 hpsa_cmd_init(h, c->cmdindex, c);
4817 c->cmd_type = CMD_SCSI;
4819 rc = hpsa_scsi_ioaccel_raid_map(h, c);
4820 if (rc < 0) /* scsi_dma_map failed. */
4821 rc = SCSI_MLQUEUE_HOST_BUSY;
4822 } else if (dev->hba_ioaccel_enabled) {
4823 hpsa_cmd_init(h, c->cmdindex, c);
4824 c->cmd_type = CMD_SCSI;
4826 rc = hpsa_scsi_ioaccel_direct_map(h, c);
4827 if (rc < 0) /* scsi_dma_map failed. */
4828 rc = SCSI_MLQUEUE_HOST_BUSY;
4833 static void hpsa_command_resubmit_worker(struct work_struct *work)
4835 struct scsi_cmnd *cmd;
4836 struct hpsa_scsi_dev_t *dev;
4837 struct CommandList *c = container_of(work, struct CommandList, work);
4840 dev = cmd->device->hostdata;
4842 cmd->result = DID_NO_CONNECT << 16;
4843 return hpsa_cmd_free_and_done(c->h, c, cmd);
4845 if (c->reset_pending)
4846 return hpsa_cmd_resolve_and_free(c->h, c);
4847 if (c->abort_pending)
4848 return hpsa_cmd_abort_and_free(c->h, c, cmd);
4849 if (c->cmd_type == CMD_IOACCEL2) {
4850 struct ctlr_info *h = c->h;
4851 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
4854 if (c2->error_data.serv_response ==
4855 IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) {
4856 rc = hpsa_ioaccel_submit(h, c, cmd, dev->scsi3addr);
4859 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
4861 * If we get here, it means dma mapping failed.
4862 * Try again via scsi mid layer, which will
4863 * then get SCSI_MLQUEUE_HOST_BUSY.
4865 cmd->result = DID_IMM_RETRY << 16;
4866 return hpsa_cmd_free_and_done(h, c, cmd);
4868 /* else, fall thru and resubmit down CISS path */
4871 hpsa_cmd_partial_init(c->h, c->cmdindex, c);
4872 if (hpsa_ciss_submit(c->h, c, cmd, dev->scsi3addr)) {
4874 * If we get here, it means dma mapping failed. Try
4875 * again via scsi mid layer, which will then get
4876 * SCSI_MLQUEUE_HOST_BUSY.
4878 * hpsa_ciss_submit will have already freed c
4879 * if it encountered a dma mapping failure.
4881 cmd->result = DID_IMM_RETRY << 16;
4882 cmd->scsi_done(cmd);
4886 /* Running in struct Scsi_Host->host_lock less mode */
4887 static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
4889 struct ctlr_info *h;
4890 struct hpsa_scsi_dev_t *dev;
4891 unsigned char scsi3addr[8];
4892 struct CommandList *c;
4895 /* Get the ptr to our adapter structure out of cmd->host. */
4896 h = sdev_to_hba(cmd->device);
4898 BUG_ON(cmd->request->tag < 0);
4900 dev = cmd->device->hostdata;
4902 cmd->result = DID_NO_CONNECT << 16;
4903 cmd->scsi_done(cmd);
4907 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
4909 if (unlikely(lockup_detected(h))) {
4910 cmd->result = DID_NO_CONNECT << 16;
4911 cmd->scsi_done(cmd);
4914 c = cmd_tagged_alloc(h, cmd);
4917 * Call alternate submit routine for I/O accelerated commands.
4918 * Retries always go down the normal I/O path.
4920 if (likely(cmd->retries == 0 &&
4921 cmd->request->cmd_type == REQ_TYPE_FS &&
4922 h->acciopath_status)) {
4923 rc = hpsa_ioaccel_submit(h, c, cmd, scsi3addr);
4926 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
4927 hpsa_cmd_resolve_and_free(h, c);
4928 return SCSI_MLQUEUE_HOST_BUSY;
4931 return hpsa_ciss_submit(h, c, cmd, scsi3addr);
4934 static void hpsa_scan_complete(struct ctlr_info *h)
4936 unsigned long flags;
4938 spin_lock_irqsave(&h->scan_lock, flags);
4939 h->scan_finished = 1;
4940 wake_up_all(&h->scan_wait_queue);
4941 spin_unlock_irqrestore(&h->scan_lock, flags);
4944 static void hpsa_scan_start(struct Scsi_Host *sh)
4946 struct ctlr_info *h = shost_to_hba(sh);
4947 unsigned long flags;
4950 * Don't let rescans be initiated on a controller known to be locked
4951 * up. If the controller locks up *during* a rescan, that thread is
4952 * probably hosed, but at least we can prevent new rescan threads from
4953 * piling up on a locked up controller.
4955 if (unlikely(lockup_detected(h)))
4956 return hpsa_scan_complete(h);
4958 /* wait until any scan already in progress is finished. */
4960 spin_lock_irqsave(&h->scan_lock, flags);
4961 if (h->scan_finished)
4963 spin_unlock_irqrestore(&h->scan_lock, flags);
4964 wait_event(h->scan_wait_queue, h->scan_finished);
4965 /* Note: We don't need to worry about a race between this
4966 * thread and driver unload because the midlayer will
4967 * have incremented the reference count, so unload won't
4968 * happen if we're in here.
4971 h->scan_finished = 0; /* mark scan as in progress */
4972 spin_unlock_irqrestore(&h->scan_lock, flags);
4974 if (unlikely(lockup_detected(h)))
4975 return hpsa_scan_complete(h);
4977 hpsa_update_scsi_devices(h);
4979 hpsa_scan_complete(h);
4982 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth)
4984 struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata;
4991 else if (qdepth > logical_drive->queue_depth)
4992 qdepth = logical_drive->queue_depth;
4994 return scsi_change_queue_depth(sdev, qdepth);
4997 static int hpsa_scan_finished(struct Scsi_Host *sh,
4998 unsigned long elapsed_time)
5000 struct ctlr_info *h = shost_to_hba(sh);
5001 unsigned long flags;
5004 spin_lock_irqsave(&h->scan_lock, flags);
5005 finished = h->scan_finished;
5006 spin_unlock_irqrestore(&h->scan_lock, flags);
5010 static int hpsa_scsi_host_alloc(struct ctlr_info *h)
5012 struct Scsi_Host *sh;
5015 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
5017 dev_err(&h->pdev->dev, "scsi_host_alloc failed\n");
5024 sh->max_channel = 3;
5025 sh->max_cmd_len = MAX_COMMAND_SIZE;
5026 sh->max_lun = HPSA_MAX_LUN;
5027 sh->max_id = HPSA_MAX_LUN;
5028 sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS;
5029 sh->cmd_per_lun = sh->can_queue;
5030 sh->sg_tablesize = h->maxsgentries;
5031 sh->hostdata[0] = (unsigned long) h;
5032 sh->irq = h->intr[h->intr_mode];
5033 sh->unique_id = sh->irq;
5034 error = scsi_init_shared_tag_map(sh, sh->can_queue);
5036 dev_err(&h->pdev->dev,
5037 "%s: scsi_init_shared_tag_map failed for controller %d\n",
5046 static int hpsa_scsi_add_host(struct ctlr_info *h)
5050 rv = scsi_add_host(h->scsi_host, &h->pdev->dev);
5052 dev_err(&h->pdev->dev, "scsi_add_host failed\n");
5055 scsi_scan_host(h->scsi_host);
5060 * The block layer has already gone to the trouble of picking out a unique,
5061 * small-integer tag for this request. We use an offset from that value as
5062 * an index to select our command block. (The offset allows us to reserve the
5063 * low-numbered entries for our own uses.)
5065 static int hpsa_get_cmd_index(struct scsi_cmnd *scmd)
5067 int idx = scmd->request->tag;
5072 /* Offset to leave space for internal cmds. */
5073 return idx += HPSA_NRESERVED_CMDS;
5077 * Send a TEST_UNIT_READY command to the specified LUN using the specified
5078 * reply queue; returns zero if the unit is ready, and non-zero otherwise.
5080 static int hpsa_send_test_unit_ready(struct ctlr_info *h,
5081 struct CommandList *c, unsigned char lunaddr[],
5086 /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */
5087 (void) fill_cmd(c, TEST_UNIT_READY, h,
5088 NULL, 0, 0, lunaddr, TYPE_CMD);
5089 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5092 /* no unmap needed here because no data xfer. */
5094 /* Check if the unit is already ready. */
5095 if (c->err_info->CommandStatus == CMD_SUCCESS)
5099 * The first command sent after reset will receive "unit attention" to
5100 * indicate that the LUN has been reset...this is actually what we're
5101 * looking for (but, success is good too).
5103 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
5104 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
5105 (c->err_info->SenseInfo[2] == NO_SENSE ||
5106 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
5113 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary;
5114 * returns zero when the unit is ready, and non-zero when giving up.
5116 static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h,
5117 struct CommandList *c,
5118 unsigned char lunaddr[], int reply_queue)
5122 int waittime = 1; /* seconds */
5124 /* Send test unit ready until device ready, or give up. */
5125 for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) {
5128 * Wait for a bit. do this first, because if we send
5129 * the TUR right away, the reset will just abort it.
5131 msleep(1000 * waittime);
5133 rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue);
5137 /* Increase wait time with each try, up to a point. */
5138 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
5141 dev_warn(&h->pdev->dev,
5142 "waiting %d secs for device to become ready.\n",
5149 static int wait_for_device_to_become_ready(struct ctlr_info *h,
5150 unsigned char lunaddr[],
5157 struct CommandList *c;
5162 * If no specific reply queue was requested, then send the TUR
5163 * repeatedly, requesting a reply on each reply queue; otherwise execute
5164 * the loop exactly once using only the specified queue.
5166 if (reply_queue == DEFAULT_REPLY_QUEUE) {
5168 last_queue = h->nreply_queues - 1;
5170 first_queue = reply_queue;
5171 last_queue = reply_queue;
5174 for (rq = first_queue; rq <= last_queue; rq++) {
5175 rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq);
5181 dev_warn(&h->pdev->dev, "giving up on device.\n");
5183 dev_warn(&h->pdev->dev, "device is ready.\n");
5189 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
5190 * complaining. Doing a host- or bus-reset can't do anything good here.
5192 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
5195 struct ctlr_info *h;
5196 struct hpsa_scsi_dev_t *dev;
5199 /* find the controller to which the command to be aborted was sent */
5200 h = sdev_to_hba(scsicmd->device);
5201 if (h == NULL) /* paranoia */
5204 if (lockup_detected(h))
5207 dev = scsicmd->device->hostdata;
5209 dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__);
5213 /* if controller locked up, we can guarantee command won't complete */
5214 if (lockup_detected(h)) {
5215 snprintf(msg, sizeof(msg),
5216 "cmd %d RESET FAILED, lockup detected",
5217 hpsa_get_cmd_index(scsicmd));
5218 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5222 /* this reset request might be the result of a lockup; check */
5223 if (detect_controller_lockup(h)) {
5224 snprintf(msg, sizeof(msg),
5225 "cmd %d RESET FAILED, new lockup detected",
5226 hpsa_get_cmd_index(scsicmd));
5227 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5231 /* Do not attempt on controller */
5232 if (is_hba_lunid(dev->scsi3addr))
5235 hpsa_show_dev_msg(KERN_WARNING, h, dev, "resetting");
5237 /* send a reset to the SCSI LUN which the command was sent to */
5238 rc = hpsa_do_reset(h, dev, dev->scsi3addr, HPSA_RESET_TYPE_LUN,
5239 DEFAULT_REPLY_QUEUE);
5240 snprintf(msg, sizeof(msg), "reset %s",
5241 rc == 0 ? "completed successfully" : "failed");
5242 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5243 return rc == 0 ? SUCCESS : FAILED;
5246 static void swizzle_abort_tag(u8 *tag)
5250 memcpy(original_tag, tag, 8);
5251 tag[0] = original_tag[3];
5252 tag[1] = original_tag[2];
5253 tag[2] = original_tag[1];
5254 tag[3] = original_tag[0];
5255 tag[4] = original_tag[7];
5256 tag[5] = original_tag[6];
5257 tag[6] = original_tag[5];
5258 tag[7] = original_tag[4];
5261 static void hpsa_get_tag(struct ctlr_info *h,
5262 struct CommandList *c, __le32 *taglower, __le32 *tagupper)
5265 if (c->cmd_type == CMD_IOACCEL1) {
5266 struct io_accel1_cmd *cm1 = (struct io_accel1_cmd *)
5267 &h->ioaccel_cmd_pool[c->cmdindex];
5268 tag = le64_to_cpu(cm1->tag);
5269 *tagupper = cpu_to_le32(tag >> 32);
5270 *taglower = cpu_to_le32(tag);
5273 if (c->cmd_type == CMD_IOACCEL2) {
5274 struct io_accel2_cmd *cm2 = (struct io_accel2_cmd *)
5275 &h->ioaccel2_cmd_pool[c->cmdindex];
5276 /* upper tag not used in ioaccel2 mode */
5277 memset(tagupper, 0, sizeof(*tagupper));
5278 *taglower = cm2->Tag;
5281 tag = le64_to_cpu(c->Header.tag);
5282 *tagupper = cpu_to_le32(tag >> 32);
5283 *taglower = cpu_to_le32(tag);
5286 static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr,
5287 struct CommandList *abort, int reply_queue)
5290 struct CommandList *c;
5291 struct ErrorInfo *ei;
5292 __le32 tagupper, taglower;
5296 /* fill_cmd can't fail here, no buffer to map */
5297 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &abort->Header.tag,
5298 0, 0, scsi3addr, TYPE_MSG);
5299 if (h->needs_abort_tags_swizzled)
5300 swizzle_abort_tag(&c->Request.CDB[4]);
5301 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5302 hpsa_get_tag(h, abort, &taglower, &tagupper);
5303 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd(abort) completed.\n",
5304 __func__, tagupper, taglower);
5305 /* no unmap needed here because no data xfer. */
5308 switch (ei->CommandStatus) {
5311 case CMD_TMF_STATUS:
5312 rc = hpsa_evaluate_tmf_status(h, c);
5314 case CMD_UNABORTABLE: /* Very common, don't make noise. */
5318 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: interpreting error.\n",
5319 __func__, tagupper, taglower);
5320 hpsa_scsi_interpret_error(h, c);
5325 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n",
5326 __func__, tagupper, taglower);
5330 static void setup_ioaccel2_abort_cmd(struct CommandList *c, struct ctlr_info *h,
5331 struct CommandList *command_to_abort, int reply_queue)
5333 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5334 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
5335 struct io_accel2_cmd *c2a =
5336 &h->ioaccel2_cmd_pool[command_to_abort->cmdindex];
5337 struct scsi_cmnd *scmd = command_to_abort->scsi_cmd;
5338 struct hpsa_scsi_dev_t *dev = scmd->device->hostdata;
5341 * We're overlaying struct hpsa_tmf_struct on top of something which
5342 * was allocated as a struct io_accel2_cmd, so we better be sure it
5343 * actually fits, and doesn't overrun the error info space.
5345 BUILD_BUG_ON(sizeof(struct hpsa_tmf_struct) >
5346 sizeof(struct io_accel2_cmd));
5347 BUG_ON(offsetof(struct io_accel2_cmd, error_data) <
5348 offsetof(struct hpsa_tmf_struct, error_len) +
5349 sizeof(ac->error_len));
5351 c->cmd_type = IOACCEL2_TMF;
5352 c->scsi_cmd = SCSI_CMD_BUSY;
5354 /* Adjust the DMA address to point to the accelerated command buffer */
5355 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
5356 (c->cmdindex * sizeof(struct io_accel2_cmd));
5357 BUG_ON(c->busaddr & 0x0000007F);
5359 memset(ac, 0, sizeof(*c2)); /* yes this is correct */
5360 ac->iu_type = IOACCEL2_IU_TMF_TYPE;
5361 ac->reply_queue = reply_queue;
5362 ac->tmf = IOACCEL2_TMF_ABORT;
5363 ac->it_nexus = cpu_to_le32(dev->ioaccel_handle);
5364 memset(ac->lun_id, 0, sizeof(ac->lun_id));
5365 ac->tag = cpu_to_le64(c->cmdindex << DIRECT_LOOKUP_SHIFT);
5366 ac->abort_tag = cpu_to_le64(le32_to_cpu(c2a->Tag));
5367 ac->error_ptr = cpu_to_le64(c->busaddr +
5368 offsetof(struct io_accel2_cmd, error_data));
5369 ac->error_len = cpu_to_le32(sizeof(c2->error_data));
5372 /* ioaccel2 path firmware cannot handle abort task requests.
5373 * Change abort requests to physical target reset, and send to the
5374 * address of the physical disk used for the ioaccel 2 command.
5375 * Return 0 on success (IO_OK)
5379 static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h,
5380 unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
5383 struct scsi_cmnd *scmd; /* scsi command within request being aborted */
5384 struct hpsa_scsi_dev_t *dev; /* device to which scsi cmd was sent */
5385 unsigned char phys_scsi3addr[8]; /* addr of phys disk with volume */
5386 unsigned char *psa = &phys_scsi3addr[0];
5388 /* Get a pointer to the hpsa logical device. */
5389 scmd = abort->scsi_cmd;
5390 dev = (struct hpsa_scsi_dev_t *)(scmd->device->hostdata);
5392 dev_warn(&h->pdev->dev,
5393 "Cannot abort: no device pointer for command.\n");
5394 return -1; /* not abortable */
5397 if (h->raid_offload_debug > 0)
5398 dev_info(&h->pdev->dev,
5399 "scsi %d:%d:%d:%d %s scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5400 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
5402 scsi3addr[0], scsi3addr[1], scsi3addr[2], scsi3addr[3],
5403 scsi3addr[4], scsi3addr[5], scsi3addr[6], scsi3addr[7]);
5405 if (!dev->offload_enabled) {
5406 dev_warn(&h->pdev->dev,
5407 "Can't abort: device is not operating in HP SSD Smart Path mode.\n");
5408 return -1; /* not abortable */
5411 /* Incoming scsi3addr is logical addr. We need physical disk addr. */
5412 if (!hpsa_get_pdisk_of_ioaccel2(h, abort, psa)) {
5413 dev_warn(&h->pdev->dev, "Can't abort: Failed lookup of physical address.\n");
5414 return -1; /* not abortable */
5417 /* send the reset */
5418 if (h->raid_offload_debug > 0)
5419 dev_info(&h->pdev->dev,
5420 "Reset as abort: Resetting physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5421 psa[0], psa[1], psa[2], psa[3],
5422 psa[4], psa[5], psa[6], psa[7]);
5423 rc = hpsa_do_reset(h, dev, psa, HPSA_RESET_TYPE_TARGET, reply_queue);
5425 dev_warn(&h->pdev->dev,
5426 "Reset as abort: Failed on physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5427 psa[0], psa[1], psa[2], psa[3],
5428 psa[4], psa[5], psa[6], psa[7]);
5429 return rc; /* failed to reset */
5432 /* wait for device to recover */
5433 if (wait_for_device_to_become_ready(h, psa, reply_queue) != 0) {
5434 dev_warn(&h->pdev->dev,
5435 "Reset as abort: Failed: Device never recovered from reset: 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5436 psa[0], psa[1], psa[2], psa[3],
5437 psa[4], psa[5], psa[6], psa[7]);
5438 return -1; /* failed to recover */
5441 /* device recovered */
5442 dev_info(&h->pdev->dev,
5443 "Reset as abort: Device recovered from reset: scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5444 psa[0], psa[1], psa[2], psa[3],
5445 psa[4], psa[5], psa[6], psa[7]);
5447 return rc; /* success */
5450 static int hpsa_send_abort_ioaccel2(struct ctlr_info *h,
5451 struct CommandList *abort, int reply_queue)
5454 struct CommandList *c;
5455 __le32 taglower, tagupper;
5456 struct hpsa_scsi_dev_t *dev;
5457 struct io_accel2_cmd *c2;
5459 dev = abort->scsi_cmd->device->hostdata;
5460 if (!dev->offload_enabled && !dev->hba_ioaccel_enabled)
5464 setup_ioaccel2_abort_cmd(c, h, abort, reply_queue);
5465 c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5466 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5467 hpsa_get_tag(h, abort, &taglower, &tagupper);
5468 dev_dbg(&h->pdev->dev,
5469 "%s: Tag:0x%08x:%08x: do_simple_cmd(ioaccel2 abort) completed.\n",
5470 __func__, tagupper, taglower);
5471 /* no unmap needed here because no data xfer. */
5473 dev_dbg(&h->pdev->dev,
5474 "%s: Tag:0x%08x:%08x: abort service response = 0x%02x.\n",
5475 __func__, tagupper, taglower, c2->error_data.serv_response);
5476 switch (c2->error_data.serv_response) {
5477 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
5478 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
5481 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
5482 case IOACCEL2_SERV_RESPONSE_FAILURE:
5483 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
5487 dev_warn(&h->pdev->dev,
5488 "%s: Tag:0x%08x:%08x: unknown abort service response 0x%02x\n",
5489 __func__, tagupper, taglower,
5490 c2->error_data.serv_response);
5494 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", __func__,
5495 tagupper, taglower);
5499 static int hpsa_send_abort_both_ways(struct ctlr_info *h,
5500 unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
5503 * ioccelerator mode 2 commands should be aborted via the
5504 * accelerated path, since RAID path is unaware of these commands,
5505 * but not all underlying firmware can handle abort TMF.
5506 * Change abort to physical device reset when abort TMF is unsupported.
5508 if (abort->cmd_type == CMD_IOACCEL2) {
5509 if (HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags)
5510 return hpsa_send_abort_ioaccel2(h, abort,
5513 return hpsa_send_reset_as_abort_ioaccel2(h, scsi3addr,
5514 abort, reply_queue);
5516 return hpsa_send_abort(h, scsi3addr, abort, reply_queue);
5519 /* Find out which reply queue a command was meant to return on */
5520 static int hpsa_extract_reply_queue(struct ctlr_info *h,
5521 struct CommandList *c)
5523 if (c->cmd_type == CMD_IOACCEL2)
5524 return h->ioaccel2_cmd_pool[c->cmdindex].reply_queue;
5525 return c->Header.ReplyQueue;
5529 * Limit concurrency of abort commands to prevent
5530 * over-subscription of commands
5532 static inline int wait_for_available_abort_cmd(struct ctlr_info *h)
5534 #define ABORT_CMD_WAIT_MSECS 5000
5535 return !wait_event_timeout(h->abort_cmd_wait_queue,
5536 atomic_dec_if_positive(&h->abort_cmds_available) >= 0,
5537 msecs_to_jiffies(ABORT_CMD_WAIT_MSECS));
5540 /* Send an abort for the specified command.
5541 * If the device and controller support it,
5542 * send a task abort request.
5544 static int hpsa_eh_abort_handler(struct scsi_cmnd *sc)
5548 struct ctlr_info *h;
5549 struct hpsa_scsi_dev_t *dev;
5550 struct CommandList *abort; /* pointer to command to be aborted */
5551 struct scsi_cmnd *as; /* ptr to scsi cmd inside aborted command. */
5552 char msg[256]; /* For debug messaging. */
5554 __le32 tagupper, taglower;
5555 int refcount, reply_queue;
5560 if (sc->device == NULL)
5563 /* Find the controller of the command to be aborted */
5564 h = sdev_to_hba(sc->device);
5568 /* Find the device of the command to be aborted */
5569 dev = sc->device->hostdata;
5571 dev_err(&h->pdev->dev, "%s FAILED, Device lookup failed.\n",
5576 /* If controller locked up, we can guarantee command won't complete */
5577 if (lockup_detected(h)) {
5578 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5579 "ABORT FAILED, lockup detected");
5583 /* This is a good time to check if controller lockup has occurred */
5584 if (detect_controller_lockup(h)) {
5585 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5586 "ABORT FAILED, new lockup detected");
5590 /* Check that controller supports some kind of task abort */
5591 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) &&
5592 !(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
5595 memset(msg, 0, sizeof(msg));
5596 ml += sprintf(msg+ml, "scsi %d:%d:%d:%llu %s %p",
5597 h->scsi_host->host_no, sc->device->channel,
5598 sc->device->id, sc->device->lun,
5599 "Aborting command", sc);
5601 /* Get SCSI command to be aborted */
5602 abort = (struct CommandList *) sc->host_scribble;
5603 if (abort == NULL) {
5604 /* This can happen if the command already completed. */
5607 refcount = atomic_inc_return(&abort->refcount);
5608 if (refcount == 1) { /* Command is done already. */
5613 /* Don't bother trying the abort if we know it won't work. */
5614 if (abort->cmd_type != CMD_IOACCEL2 &&
5615 abort->cmd_type != CMD_IOACCEL1 && !dev->supports_aborts) {
5621 * Check that we're aborting the right command.
5622 * It's possible the CommandList already completed and got re-used.
5624 if (abort->scsi_cmd != sc) {
5629 abort->abort_pending = true;
5630 hpsa_get_tag(h, abort, &taglower, &tagupper);
5631 reply_queue = hpsa_extract_reply_queue(h, abort);
5632 ml += sprintf(msg+ml, "Tag:0x%08x:%08x ", tagupper, taglower);
5633 as = abort->scsi_cmd;
5635 ml += sprintf(msg+ml,
5636 "CDBLen: %d CDB: 0x%02x%02x... SN: 0x%lx ",
5637 as->cmd_len, as->cmnd[0], as->cmnd[1],
5639 dev_warn(&h->pdev->dev, "%s BEING SENT\n", msg);
5640 hpsa_show_dev_msg(KERN_WARNING, h, dev, "Aborting command");
5643 * Command is in flight, or possibly already completed
5644 * by the firmware (but not to the scsi mid layer) but we can't
5645 * distinguish which. Send the abort down.
5647 if (wait_for_available_abort_cmd(h)) {
5648 dev_warn(&h->pdev->dev,
5649 "%s FAILED, timeout waiting for an abort command to become available.\n",
5654 rc = hpsa_send_abort_both_ways(h, dev->scsi3addr, abort, reply_queue);
5655 atomic_inc(&h->abort_cmds_available);
5656 wake_up_all(&h->abort_cmd_wait_queue);
5658 dev_warn(&h->pdev->dev, "%s SENT, FAILED\n", msg);
5659 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5660 "FAILED to abort command");
5664 dev_info(&h->pdev->dev, "%s SENT, SUCCESS\n", msg);
5665 wait_event(h->event_sync_wait_queue,
5666 abort->scsi_cmd != sc || lockup_detected(h));
5668 return !lockup_detected(h) ? SUCCESS : FAILED;
5672 * For operations with an associated SCSI command, a command block is allocated
5673 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the
5674 * block request tag as an index into a table of entries. cmd_tagged_free() is
5675 * the complement, although cmd_free() may be called instead.
5677 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
5678 struct scsi_cmnd *scmd)
5680 int idx = hpsa_get_cmd_index(scmd);
5681 struct CommandList *c = h->cmd_pool + idx;
5683 if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) {
5684 dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n",
5685 idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1);
5686 /* The index value comes from the block layer, so if it's out of
5687 * bounds, it's probably not our bug.
5692 atomic_inc(&c->refcount);
5693 if (unlikely(!hpsa_is_cmd_idle(c))) {
5695 * We expect that the SCSI layer will hand us a unique tag
5696 * value. Thus, there should never be a collision here between
5697 * two requests...because if the selected command isn't idle
5698 * then someone is going to be very disappointed.
5700 dev_err(&h->pdev->dev,
5701 "tag collision (tag=%d) in cmd_tagged_alloc().\n",
5703 if (c->scsi_cmd != NULL)
5704 scsi_print_command(c->scsi_cmd);
5705 scsi_print_command(scmd);
5708 hpsa_cmd_partial_init(h, idx, c);
5712 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c)
5715 * Release our reference to the block. We don't need to do anything
5716 * else to free it, because it is accessed by index. (There's no point
5717 * in checking the result of the decrement, since we cannot guarantee
5718 * that there isn't a concurrent abort which is also accessing it.)
5720 (void)atomic_dec(&c->refcount);
5724 * For operations that cannot sleep, a command block is allocated at init,
5725 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
5726 * which ones are free or in use. Lock must be held when calling this.
5727 * cmd_free() is the complement.
5728 * This function never gives up and returns NULL. If it hangs,
5729 * another thread must call cmd_free() to free some tags.
5732 static struct CommandList *cmd_alloc(struct ctlr_info *h)
5734 struct CommandList *c;
5739 * There is some *extremely* small but non-zero chance that that
5740 * multiple threads could get in here, and one thread could
5741 * be scanning through the list of bits looking for a free
5742 * one, but the free ones are always behind him, and other
5743 * threads sneak in behind him and eat them before he can
5744 * get to them, so that while there is always a free one, a
5745 * very unlucky thread might be starved anyway, never able to
5746 * beat the other threads. In reality, this happens so
5747 * infrequently as to be indistinguishable from never.
5749 * Note that we start allocating commands before the SCSI host structure
5750 * is initialized. Since the search starts at bit zero, this
5751 * all works, since we have at least one command structure available;
5752 * however, it means that the structures with the low indexes have to be
5753 * reserved for driver-initiated requests, while requests from the block
5754 * layer will use the higher indexes.
5758 i = find_next_zero_bit(h->cmd_pool_bits,
5759 HPSA_NRESERVED_CMDS,
5761 if (unlikely(i >= HPSA_NRESERVED_CMDS)) {
5765 c = h->cmd_pool + i;
5766 refcount = atomic_inc_return(&c->refcount);
5767 if (unlikely(refcount > 1)) {
5768 cmd_free(h, c); /* already in use */
5769 offset = (i + 1) % HPSA_NRESERVED_CMDS;
5772 set_bit(i & (BITS_PER_LONG - 1),
5773 h->cmd_pool_bits + (i / BITS_PER_LONG));
5774 break; /* it's ours now. */
5776 hpsa_cmd_partial_init(h, i, c);
5781 * This is the complementary operation to cmd_alloc(). Note, however, in some
5782 * corner cases it may also be used to free blocks allocated by
5783 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and
5784 * the clear-bit is harmless.
5786 static void cmd_free(struct ctlr_info *h, struct CommandList *c)
5788 if (atomic_dec_and_test(&c->refcount)) {
5791 i = c - h->cmd_pool;
5792 clear_bit(i & (BITS_PER_LONG - 1),
5793 h->cmd_pool_bits + (i / BITS_PER_LONG));
5797 #ifdef CONFIG_COMPAT
5799 static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd,
5802 IOCTL32_Command_struct __user *arg32 =
5803 (IOCTL32_Command_struct __user *) arg;
5804 IOCTL_Command_struct arg64;
5805 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
5809 memset(&arg64, 0, sizeof(arg64));
5811 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
5812 sizeof(arg64.LUN_info));
5813 err |= copy_from_user(&arg64.Request, &arg32->Request,
5814 sizeof(arg64.Request));
5815 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
5816 sizeof(arg64.error_info));
5817 err |= get_user(arg64.buf_size, &arg32->buf_size);
5818 err |= get_user(cp, &arg32->buf);
5819 arg64.buf = compat_ptr(cp);
5820 err |= copy_to_user(p, &arg64, sizeof(arg64));
5825 err = hpsa_ioctl(dev, CCISS_PASSTHRU, p);
5828 err |= copy_in_user(&arg32->error_info, &p->error_info,
5829 sizeof(arg32->error_info));
5835 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
5836 int cmd, void __user *arg)
5838 BIG_IOCTL32_Command_struct __user *arg32 =
5839 (BIG_IOCTL32_Command_struct __user *) arg;
5840 BIG_IOCTL_Command_struct arg64;
5841 BIG_IOCTL_Command_struct __user *p =
5842 compat_alloc_user_space(sizeof(arg64));
5846 memset(&arg64, 0, sizeof(arg64));
5848 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
5849 sizeof(arg64.LUN_info));
5850 err |= copy_from_user(&arg64.Request, &arg32->Request,
5851 sizeof(arg64.Request));
5852 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
5853 sizeof(arg64.error_info));
5854 err |= get_user(arg64.buf_size, &arg32->buf_size);
5855 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
5856 err |= get_user(cp, &arg32->buf);
5857 arg64.buf = compat_ptr(cp);
5858 err |= copy_to_user(p, &arg64, sizeof(arg64));
5863 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, p);
5866 err |= copy_in_user(&arg32->error_info, &p->error_info,
5867 sizeof(arg32->error_info));
5873 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
5876 case CCISS_GETPCIINFO:
5877 case CCISS_GETINTINFO:
5878 case CCISS_SETINTINFO:
5879 case CCISS_GETNODENAME:
5880 case CCISS_SETNODENAME:
5881 case CCISS_GETHEARTBEAT:
5882 case CCISS_GETBUSTYPES:
5883 case CCISS_GETFIRMVER:
5884 case CCISS_GETDRIVVER:
5885 case CCISS_REVALIDVOLS:
5886 case CCISS_DEREGDISK:
5887 case CCISS_REGNEWDISK:
5889 case CCISS_RESCANDISK:
5890 case CCISS_GETLUNINFO:
5891 return hpsa_ioctl(dev, cmd, arg);
5893 case CCISS_PASSTHRU32:
5894 return hpsa_ioctl32_passthru(dev, cmd, arg);
5895 case CCISS_BIG_PASSTHRU32:
5896 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
5899 return -ENOIOCTLCMD;
5904 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
5906 struct hpsa_pci_info pciinfo;
5910 pciinfo.domain = pci_domain_nr(h->pdev->bus);
5911 pciinfo.bus = h->pdev->bus->number;
5912 pciinfo.dev_fn = h->pdev->devfn;
5913 pciinfo.board_id = h->board_id;
5914 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
5919 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
5921 DriverVer_type DriverVer;
5922 unsigned char vmaj, vmin, vsubmin;
5925 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
5926 &vmaj, &vmin, &vsubmin);
5928 dev_info(&h->pdev->dev, "driver version string '%s' "
5929 "unrecognized.", HPSA_DRIVER_VERSION);
5934 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
5937 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
5942 static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
5944 IOCTL_Command_struct iocommand;
5945 struct CommandList *c;
5952 if (!capable(CAP_SYS_RAWIO))
5954 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
5956 if ((iocommand.buf_size < 1) &&
5957 (iocommand.Request.Type.Direction != XFER_NONE)) {
5960 if (iocommand.buf_size > 0) {
5961 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
5964 if (iocommand.Request.Type.Direction & XFER_WRITE) {
5965 /* Copy the data into the buffer we created */
5966 if (copy_from_user(buff, iocommand.buf,
5967 iocommand.buf_size)) {
5972 memset(buff, 0, iocommand.buf_size);
5977 /* Fill in the command type */
5978 c->cmd_type = CMD_IOCTL_PEND;
5979 c->scsi_cmd = SCSI_CMD_BUSY;
5980 /* Fill in Command Header */
5981 c->Header.ReplyQueue = 0; /* unused in simple mode */
5982 if (iocommand.buf_size > 0) { /* buffer to fill */
5983 c->Header.SGList = 1;
5984 c->Header.SGTotal = cpu_to_le16(1);
5985 } else { /* no buffers to fill */
5986 c->Header.SGList = 0;
5987 c->Header.SGTotal = cpu_to_le16(0);
5989 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
5991 /* Fill in Request block */
5992 memcpy(&c->Request, &iocommand.Request,
5993 sizeof(c->Request));
5995 /* Fill in the scatter gather information */
5996 if (iocommand.buf_size > 0) {
5997 temp64 = pci_map_single(h->pdev, buff,
5998 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
5999 if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) {
6000 c->SG[0].Addr = cpu_to_le64(0);
6001 c->SG[0].Len = cpu_to_le32(0);
6005 c->SG[0].Addr = cpu_to_le64(temp64);
6006 c->SG[0].Len = cpu_to_le32(iocommand.buf_size);
6007 c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */
6009 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
6010 if (iocommand.buf_size > 0)
6011 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
6012 check_ioctl_unit_attention(h, c);
6018 /* Copy the error information out */
6019 memcpy(&iocommand.error_info, c->err_info,
6020 sizeof(iocommand.error_info));
6021 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
6025 if ((iocommand.Request.Type.Direction & XFER_READ) &&
6026 iocommand.buf_size > 0) {
6027 /* Copy the data out of the buffer we created */
6028 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
6040 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
6042 BIG_IOCTL_Command_struct *ioc;
6043 struct CommandList *c;
6044 unsigned char **buff = NULL;
6045 int *buff_size = NULL;
6051 BYTE __user *data_ptr;
6055 if (!capable(CAP_SYS_RAWIO))
6057 ioc = (BIG_IOCTL_Command_struct *)
6058 kmalloc(sizeof(*ioc), GFP_KERNEL);
6063 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
6067 if ((ioc->buf_size < 1) &&
6068 (ioc->Request.Type.Direction != XFER_NONE)) {
6072 /* Check kmalloc limits using all SGs */
6073 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
6077 if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) {
6081 buff = kzalloc(SG_ENTRIES_IN_CMD * sizeof(char *), GFP_KERNEL);
6086 buff_size = kmalloc(SG_ENTRIES_IN_CMD * sizeof(int), GFP_KERNEL);
6091 left = ioc->buf_size;
6092 data_ptr = ioc->buf;
6094 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
6095 buff_size[sg_used] = sz;
6096 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
6097 if (buff[sg_used] == NULL) {
6101 if (ioc->Request.Type.Direction & XFER_WRITE) {
6102 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
6107 memset(buff[sg_used], 0, sz);
6114 c->cmd_type = CMD_IOCTL_PEND;
6115 c->scsi_cmd = SCSI_CMD_BUSY;
6116 c->Header.ReplyQueue = 0;
6117 c->Header.SGList = (u8) sg_used;
6118 c->Header.SGTotal = cpu_to_le16(sg_used);
6119 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
6120 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
6121 if (ioc->buf_size > 0) {
6123 for (i = 0; i < sg_used; i++) {
6124 temp64 = pci_map_single(h->pdev, buff[i],
6125 buff_size[i], PCI_DMA_BIDIRECTIONAL);
6126 if (dma_mapping_error(&h->pdev->dev,
6127 (dma_addr_t) temp64)) {
6128 c->SG[i].Addr = cpu_to_le64(0);
6129 c->SG[i].Len = cpu_to_le32(0);
6130 hpsa_pci_unmap(h->pdev, c, i,
6131 PCI_DMA_BIDIRECTIONAL);
6135 c->SG[i].Addr = cpu_to_le64(temp64);
6136 c->SG[i].Len = cpu_to_le32(buff_size[i]);
6137 c->SG[i].Ext = cpu_to_le32(0);
6139 c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST);
6141 status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
6143 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
6144 check_ioctl_unit_attention(h, c);
6150 /* Copy the error information out */
6151 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
6152 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
6156 if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) {
6159 /* Copy the data out of the buffer we created */
6160 BYTE __user *ptr = ioc->buf;
6161 for (i = 0; i < sg_used; i++) {
6162 if (copy_to_user(ptr, buff[i], buff_size[i])) {
6166 ptr += buff_size[i];
6176 for (i = 0; i < sg_used; i++)
6185 static void check_ioctl_unit_attention(struct ctlr_info *h,
6186 struct CommandList *c)
6188 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
6189 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
6190 (void) check_for_unit_attention(h, c);
6196 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
6198 struct ctlr_info *h;
6199 void __user *argp = (void __user *)arg;
6202 h = sdev_to_hba(dev);
6205 case CCISS_DEREGDISK:
6206 case CCISS_REGNEWDISK:
6208 hpsa_scan_start(h->scsi_host);
6210 case CCISS_GETPCIINFO:
6211 return hpsa_getpciinfo_ioctl(h, argp);
6212 case CCISS_GETDRIVVER:
6213 return hpsa_getdrivver_ioctl(h, argp);
6214 case CCISS_PASSTHRU:
6215 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6217 rc = hpsa_passthru_ioctl(h, argp);
6218 atomic_inc(&h->passthru_cmds_avail);
6220 case CCISS_BIG_PASSTHRU:
6221 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6223 rc = hpsa_big_passthru_ioctl(h, argp);
6224 atomic_inc(&h->passthru_cmds_avail);
6231 static void hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr,
6234 struct CommandList *c;
6238 /* fill_cmd can't fail here, no data buffer to map */
6239 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
6240 RAID_CTLR_LUNID, TYPE_MSG);
6241 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */
6243 enqueue_cmd_and_start_io(h, c);
6244 /* Don't wait for completion, the reset won't complete. Don't free
6245 * the command either. This is the last command we will send before
6246 * re-initializing everything, so it doesn't matter and won't leak.
6251 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
6252 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
6255 int pci_dir = XFER_NONE;
6256 u64 tag; /* for commands to be aborted */
6258 c->cmd_type = CMD_IOCTL_PEND;
6259 c->scsi_cmd = SCSI_CMD_BUSY;
6260 c->Header.ReplyQueue = 0;
6261 if (buff != NULL && size > 0) {
6262 c->Header.SGList = 1;
6263 c->Header.SGTotal = cpu_to_le16(1);
6265 c->Header.SGList = 0;
6266 c->Header.SGTotal = cpu_to_le16(0);
6268 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
6270 if (cmd_type == TYPE_CMD) {
6273 /* are we trying to read a vital product page */
6274 if (page_code & VPD_PAGE) {
6275 c->Request.CDB[1] = 0x01;
6276 c->Request.CDB[2] = (page_code & 0xff);
6278 c->Request.CDBLen = 6;
6279 c->Request.type_attr_dir =
6280 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6281 c->Request.Timeout = 0;
6282 c->Request.CDB[0] = HPSA_INQUIRY;
6283 c->Request.CDB[4] = size & 0xFF;
6285 case HPSA_REPORT_LOG:
6286 case HPSA_REPORT_PHYS:
6287 /* Talking to controller so It's a physical command
6288 mode = 00 target = 0. Nothing to write.
6290 c->Request.CDBLen = 12;
6291 c->Request.type_attr_dir =
6292 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6293 c->Request.Timeout = 0;
6294 c->Request.CDB[0] = cmd;
6295 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6296 c->Request.CDB[7] = (size >> 16) & 0xFF;
6297 c->Request.CDB[8] = (size >> 8) & 0xFF;
6298 c->Request.CDB[9] = size & 0xFF;
6300 case HPSA_CACHE_FLUSH:
6301 c->Request.CDBLen = 12;
6302 c->Request.type_attr_dir =
6303 TYPE_ATTR_DIR(cmd_type,
6304 ATTR_SIMPLE, XFER_WRITE);
6305 c->Request.Timeout = 0;
6306 c->Request.CDB[0] = BMIC_WRITE;
6307 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
6308 c->Request.CDB[7] = (size >> 8) & 0xFF;
6309 c->Request.CDB[8] = size & 0xFF;
6311 case TEST_UNIT_READY:
6312 c->Request.CDBLen = 6;
6313 c->Request.type_attr_dir =
6314 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6315 c->Request.Timeout = 0;
6317 case HPSA_GET_RAID_MAP:
6318 c->Request.CDBLen = 12;
6319 c->Request.type_attr_dir =
6320 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6321 c->Request.Timeout = 0;
6322 c->Request.CDB[0] = HPSA_CISS_READ;
6323 c->Request.CDB[1] = cmd;
6324 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6325 c->Request.CDB[7] = (size >> 16) & 0xFF;
6326 c->Request.CDB[8] = (size >> 8) & 0xFF;
6327 c->Request.CDB[9] = size & 0xFF;
6329 case BMIC_SENSE_CONTROLLER_PARAMETERS:
6330 c->Request.CDBLen = 10;
6331 c->Request.type_attr_dir =
6332 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6333 c->Request.Timeout = 0;
6334 c->Request.CDB[0] = BMIC_READ;
6335 c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS;
6336 c->Request.CDB[7] = (size >> 16) & 0xFF;
6337 c->Request.CDB[8] = (size >> 8) & 0xFF;
6339 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
6340 c->Request.CDBLen = 10;
6341 c->Request.type_attr_dir =
6342 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6343 c->Request.Timeout = 0;
6344 c->Request.CDB[0] = BMIC_READ;
6345 c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE;
6346 c->Request.CDB[7] = (size >> 16) & 0xFF;
6347 c->Request.CDB[8] = (size >> 8) & 0XFF;
6350 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
6354 } else if (cmd_type == TYPE_MSG) {
6357 case HPSA_DEVICE_RESET_MSG:
6358 c->Request.CDBLen = 16;
6359 c->Request.type_attr_dir =
6360 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6361 c->Request.Timeout = 0; /* Don't time out */
6362 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
6363 c->Request.CDB[0] = cmd;
6364 c->Request.CDB[1] = HPSA_RESET_TYPE_LUN;
6365 /* If bytes 4-7 are zero, it means reset the */
6367 c->Request.CDB[4] = 0x00;
6368 c->Request.CDB[5] = 0x00;
6369 c->Request.CDB[6] = 0x00;
6370 c->Request.CDB[7] = 0x00;
6372 case HPSA_ABORT_MSG:
6373 memcpy(&tag, buff, sizeof(tag));
6374 dev_dbg(&h->pdev->dev,
6375 "Abort Tag:0x%016llx using rqst Tag:0x%016llx",
6376 tag, c->Header.tag);
6377 c->Request.CDBLen = 16;
6378 c->Request.type_attr_dir =
6379 TYPE_ATTR_DIR(cmd_type,
6380 ATTR_SIMPLE, XFER_WRITE);
6381 c->Request.Timeout = 0; /* Don't time out */
6382 c->Request.CDB[0] = HPSA_TASK_MANAGEMENT;
6383 c->Request.CDB[1] = HPSA_TMF_ABORT_TASK;
6384 c->Request.CDB[2] = 0x00; /* reserved */
6385 c->Request.CDB[3] = 0x00; /* reserved */
6386 /* Tag to abort goes in CDB[4]-CDB[11] */
6387 memcpy(&c->Request.CDB[4], &tag, sizeof(tag));
6388 c->Request.CDB[12] = 0x00; /* reserved */
6389 c->Request.CDB[13] = 0x00; /* reserved */
6390 c->Request.CDB[14] = 0x00; /* reserved */
6391 c->Request.CDB[15] = 0x00; /* reserved */
6394 dev_warn(&h->pdev->dev, "unknown message type %d\n",
6399 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
6403 switch (GET_DIR(c->Request.type_attr_dir)) {
6405 pci_dir = PCI_DMA_FROMDEVICE;
6408 pci_dir = PCI_DMA_TODEVICE;
6411 pci_dir = PCI_DMA_NONE;
6414 pci_dir = PCI_DMA_BIDIRECTIONAL;
6416 if (hpsa_map_one(h->pdev, c, buff, size, pci_dir))
6422 * Map (physical) PCI mem into (virtual) kernel space
6424 static void __iomem *remap_pci_mem(ulong base, ulong size)
6426 ulong page_base = ((ulong) base) & PAGE_MASK;
6427 ulong page_offs = ((ulong) base) - page_base;
6428 void __iomem *page_remapped = ioremap_nocache(page_base,
6431 return page_remapped ? (page_remapped + page_offs) : NULL;
6434 static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
6436 return h->access.command_completed(h, q);
6439 static inline bool interrupt_pending(struct ctlr_info *h)
6441 return h->access.intr_pending(h);
6444 static inline long interrupt_not_for_us(struct ctlr_info *h)
6446 return (h->access.intr_pending(h) == 0) ||
6447 (h->interrupts_enabled == 0);
6450 static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
6453 if (unlikely(tag_index >= h->nr_cmds)) {
6454 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
6460 static inline void finish_cmd(struct CommandList *c)
6462 dial_up_lockup_detection_on_fw_flash_complete(c->h, c);
6463 if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI
6464 || c->cmd_type == CMD_IOACCEL2))
6465 complete_scsi_command(c);
6466 else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF)
6467 complete(c->waiting);
6470 /* process completion of an indexed ("direct lookup") command */
6471 static inline void process_indexed_cmd(struct ctlr_info *h,
6475 struct CommandList *c;
6477 tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT;
6478 if (!bad_tag(h, tag_index, raw_tag)) {
6479 c = h->cmd_pool + tag_index;
6484 /* Some controllers, like p400, will give us one interrupt
6485 * after a soft reset, even if we turned interrupts off.
6486 * Only need to check for this in the hpsa_xxx_discard_completions
6489 static int ignore_bogus_interrupt(struct ctlr_info *h)
6491 if (likely(!reset_devices))
6494 if (likely(h->interrupts_enabled))
6497 dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled "
6498 "(known firmware bug.) Ignoring.\n");
6504 * Convert &h->q[x] (passed to interrupt handlers) back to h.
6505 * Relies on (h-q[x] == x) being true for x such that
6506 * 0 <= x < MAX_REPLY_QUEUES.
6508 static struct ctlr_info *queue_to_hba(u8 *queue)
6510 return container_of((queue - *queue), struct ctlr_info, q[0]);
6513 static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue)
6515 struct ctlr_info *h = queue_to_hba(queue);
6516 u8 q = *(u8 *) queue;
6519 if (ignore_bogus_interrupt(h))
6522 if (interrupt_not_for_us(h))
6524 h->last_intr_timestamp = get_jiffies_64();
6525 while (interrupt_pending(h)) {
6526 raw_tag = get_next_completion(h, q);
6527 while (raw_tag != FIFO_EMPTY)
6528 raw_tag = next_command(h, q);
6533 static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue)
6535 struct ctlr_info *h = queue_to_hba(queue);
6537 u8 q = *(u8 *) queue;
6539 if (ignore_bogus_interrupt(h))
6542 h->last_intr_timestamp = get_jiffies_64();
6543 raw_tag = get_next_completion(h, q);
6544 while (raw_tag != FIFO_EMPTY)
6545 raw_tag = next_command(h, q);
6549 static irqreturn_t do_hpsa_intr_intx(int irq, void *queue)
6551 struct ctlr_info *h = queue_to_hba((u8 *) queue);
6553 u8 q = *(u8 *) queue;
6555 if (interrupt_not_for_us(h))
6557 h->last_intr_timestamp = get_jiffies_64();
6558 while (interrupt_pending(h)) {
6559 raw_tag = get_next_completion(h, q);
6560 while (raw_tag != FIFO_EMPTY) {
6561 process_indexed_cmd(h, raw_tag);
6562 raw_tag = next_command(h, q);
6568 static irqreturn_t do_hpsa_intr_msi(int irq, void *queue)
6570 struct ctlr_info *h = queue_to_hba(queue);
6572 u8 q = *(u8 *) queue;
6574 h->last_intr_timestamp = get_jiffies_64();
6575 raw_tag = get_next_completion(h, q);
6576 while (raw_tag != FIFO_EMPTY) {
6577 process_indexed_cmd(h, raw_tag);
6578 raw_tag = next_command(h, q);
6583 /* Send a message CDB to the firmware. Careful, this only works
6584 * in simple mode, not performant mode due to the tag lookup.
6585 * We only ever use this immediately after a controller reset.
6587 static int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
6591 struct CommandListHeader CommandHeader;
6592 struct RequestBlock Request;
6593 struct ErrDescriptor ErrorDescriptor;
6595 struct Command *cmd;
6596 static const size_t cmd_sz = sizeof(*cmd) +
6597 sizeof(cmd->ErrorDescriptor);
6601 void __iomem *vaddr;
6604 vaddr = pci_ioremap_bar(pdev, 0);
6608 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
6609 * CCISS commands, so they must be allocated from the lower 4GiB of
6612 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
6618 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
6624 /* This must fit, because of the 32-bit consistent DMA mask. Also,
6625 * although there's no guarantee, we assume that the address is at
6626 * least 4-byte aligned (most likely, it's page-aligned).
6628 paddr32 = cpu_to_le32(paddr64);
6630 cmd->CommandHeader.ReplyQueue = 0;
6631 cmd->CommandHeader.SGList = 0;
6632 cmd->CommandHeader.SGTotal = cpu_to_le16(0);
6633 cmd->CommandHeader.tag = cpu_to_le64(paddr64);
6634 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
6636 cmd->Request.CDBLen = 16;
6637 cmd->Request.type_attr_dir =
6638 TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE);
6639 cmd->Request.Timeout = 0; /* Don't time out */
6640 cmd->Request.CDB[0] = opcode;
6641 cmd->Request.CDB[1] = type;
6642 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
6643 cmd->ErrorDescriptor.Addr =
6644 cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd)));
6645 cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo));
6647 writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET);
6649 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
6650 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
6651 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64)
6653 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
6658 /* we leak the DMA buffer here ... no choice since the controller could
6659 * still complete the command.
6661 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
6662 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
6667 pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
6669 if (tag & HPSA_ERROR_BIT) {
6670 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
6675 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
6680 #define hpsa_noop(p) hpsa_message(p, 3, 0)
6682 static int hpsa_controller_hard_reset(struct pci_dev *pdev,
6683 void __iomem *vaddr, u32 use_doorbell)
6687 /* For everything after the P600, the PCI power state method
6688 * of resetting the controller doesn't work, so we have this
6689 * other way using the doorbell register.
6691 dev_info(&pdev->dev, "using doorbell to reset controller\n");
6692 writel(use_doorbell, vaddr + SA5_DOORBELL);
6694 /* PMC hardware guys tell us we need a 10 second delay after
6695 * doorbell reset and before any attempt to talk to the board
6696 * at all to ensure that this actually works and doesn't fall
6697 * over in some weird corner cases.
6700 } else { /* Try to do it the PCI power state way */
6702 /* Quoting from the Open CISS Specification: "The Power
6703 * Management Control/Status Register (CSR) controls the power
6704 * state of the device. The normal operating state is D0,
6705 * CSR=00h. The software off state is D3, CSR=03h. To reset
6706 * the controller, place the interface device in D3 then to D0,
6707 * this causes a secondary PCI reset which will reset the
6712 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
6714 /* enter the D3hot power management state */
6715 rc = pci_set_power_state(pdev, PCI_D3hot);
6721 /* enter the D0 power management state */
6722 rc = pci_set_power_state(pdev, PCI_D0);
6727 * The P600 requires a small delay when changing states.
6728 * Otherwise we may think the board did not reset and we bail.
6729 * This for kdump only and is particular to the P600.
6736 static void init_driver_version(char *driver_version, int len)
6738 memset(driver_version, 0, len);
6739 strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1);
6742 static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable)
6744 char *driver_version;
6745 int i, size = sizeof(cfgtable->driver_version);
6747 driver_version = kmalloc(size, GFP_KERNEL);
6748 if (!driver_version)
6751 init_driver_version(driver_version, size);
6752 for (i = 0; i < size; i++)
6753 writeb(driver_version[i], &cfgtable->driver_version[i]);
6754 kfree(driver_version);
6758 static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable,
6759 unsigned char *driver_ver)
6763 for (i = 0; i < sizeof(cfgtable->driver_version); i++)
6764 driver_ver[i] = readb(&cfgtable->driver_version[i]);
6767 static int controller_reset_failed(struct CfgTable __iomem *cfgtable)
6770 char *driver_ver, *old_driver_ver;
6771 int rc, size = sizeof(cfgtable->driver_version);
6773 old_driver_ver = kmalloc(2 * size, GFP_KERNEL);
6774 if (!old_driver_ver)
6776 driver_ver = old_driver_ver + size;
6778 /* After a reset, the 32 bytes of "driver version" in the cfgtable
6779 * should have been changed, otherwise we know the reset failed.
6781 init_driver_version(old_driver_ver, size);
6782 read_driver_ver_from_cfgtable(cfgtable, driver_ver);
6783 rc = !memcmp(driver_ver, old_driver_ver, size);
6784 kfree(old_driver_ver);
6787 /* This does a hard reset of the controller using PCI power management
6788 * states or the using the doorbell register.
6790 static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id)
6794 u64 cfg_base_addr_index;
6795 void __iomem *vaddr;
6796 unsigned long paddr;
6797 u32 misc_fw_support;
6799 struct CfgTable __iomem *cfgtable;
6801 u16 command_register;
6803 /* For controllers as old as the P600, this is very nearly
6806 * pci_save_state(pci_dev);
6807 * pci_set_power_state(pci_dev, PCI_D3hot);
6808 * pci_set_power_state(pci_dev, PCI_D0);
6809 * pci_restore_state(pci_dev);
6811 * For controllers newer than the P600, the pci power state
6812 * method of resetting doesn't work so we have another way
6813 * using the doorbell register.
6816 if (!ctlr_is_resettable(board_id)) {
6817 dev_warn(&pdev->dev, "Controller not resettable\n");
6821 /* if controller is soft- but not hard resettable... */
6822 if (!ctlr_is_hard_resettable(board_id))
6823 return -ENOTSUPP; /* try soft reset later. */
6825 /* Save the PCI command register */
6826 pci_read_config_word(pdev, 4, &command_register);
6827 pci_save_state(pdev);
6829 /* find the first memory BAR, so we can find the cfg table */
6830 rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
6833 vaddr = remap_pci_mem(paddr, 0x250);
6837 /* find cfgtable in order to check if reset via doorbell is supported */
6838 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
6839 &cfg_base_addr_index, &cfg_offset);
6842 cfgtable = remap_pci_mem(pci_resource_start(pdev,
6843 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
6848 rc = write_driver_ver_to_cfgtable(cfgtable);
6850 goto unmap_cfgtable;
6852 /* If reset via doorbell register is supported, use that.
6853 * There are two such methods. Favor the newest method.
6855 misc_fw_support = readl(&cfgtable->misc_fw_support);
6856 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2;
6858 use_doorbell = DOORBELL_CTLR_RESET2;
6860 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
6862 dev_warn(&pdev->dev,
6863 "Soft reset not supported. Firmware update is required.\n");
6864 rc = -ENOTSUPP; /* try soft reset */
6865 goto unmap_cfgtable;
6869 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
6871 goto unmap_cfgtable;
6873 pci_restore_state(pdev);
6874 pci_write_config_word(pdev, 4, command_register);
6876 /* Some devices (notably the HP Smart Array 5i Controller)
6877 need a little pause here */
6878 msleep(HPSA_POST_RESET_PAUSE_MSECS);
6880 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
6882 dev_warn(&pdev->dev,
6883 "Failed waiting for board to become ready after hard reset\n");
6884 goto unmap_cfgtable;
6887 rc = controller_reset_failed(vaddr);
6889 goto unmap_cfgtable;
6891 dev_warn(&pdev->dev, "Unable to successfully reset "
6892 "controller. Will try soft reset.\n");
6895 dev_info(&pdev->dev, "board ready after hard reset.\n");
6907 * We cannot read the structure directly, for portability we must use
6909 * This is for debug only.
6911 static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb)
6917 dev_info(dev, "Controller Configuration information\n");
6918 dev_info(dev, "------------------------------------\n");
6919 for (i = 0; i < 4; i++)
6920 temp_name[i] = readb(&(tb->Signature[i]));
6921 temp_name[4] = '\0';
6922 dev_info(dev, " Signature = %s\n", temp_name);
6923 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
6924 dev_info(dev, " Transport methods supported = 0x%x\n",
6925 readl(&(tb->TransportSupport)));
6926 dev_info(dev, " Transport methods active = 0x%x\n",
6927 readl(&(tb->TransportActive)));
6928 dev_info(dev, " Requested transport Method = 0x%x\n",
6929 readl(&(tb->HostWrite.TransportRequest)));
6930 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
6931 readl(&(tb->HostWrite.CoalIntDelay)));
6932 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
6933 readl(&(tb->HostWrite.CoalIntCount)));
6934 dev_info(dev, " Max outstanding commands = %d\n",
6935 readl(&(tb->CmdsOutMax)));
6936 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
6937 for (i = 0; i < 16; i++)
6938 temp_name[i] = readb(&(tb->ServerName[i]));
6939 temp_name[16] = '\0';
6940 dev_info(dev, " Server Name = %s\n", temp_name);
6941 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
6942 readl(&(tb->HeartBeat)));
6943 #endif /* HPSA_DEBUG */
6946 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
6948 int i, offset, mem_type, bar_type;
6950 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
6953 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
6954 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
6955 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
6958 mem_type = pci_resource_flags(pdev, i) &
6959 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
6961 case PCI_BASE_ADDRESS_MEM_TYPE_32:
6962 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
6963 offset += 4; /* 32 bit */
6965 case PCI_BASE_ADDRESS_MEM_TYPE_64:
6968 default: /* reserved in PCI 2.2 */
6969 dev_warn(&pdev->dev,
6970 "base address is invalid\n");
6975 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
6981 static void hpsa_disable_interrupt_mode(struct ctlr_info *h)
6983 if (h->msix_vector) {
6984 if (h->pdev->msix_enabled)
6985 pci_disable_msix(h->pdev);
6987 } else if (h->msi_vector) {
6988 if (h->pdev->msi_enabled)
6989 pci_disable_msi(h->pdev);
6994 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
6995 * controllers that are capable. If not, we use legacy INTx mode.
6997 static void hpsa_interrupt_mode(struct ctlr_info *h)
6999 #ifdef CONFIG_PCI_MSI
7001 struct msix_entry hpsa_msix_entries[MAX_REPLY_QUEUES];
7003 for (i = 0; i < MAX_REPLY_QUEUES; i++) {
7004 hpsa_msix_entries[i].vector = 0;
7005 hpsa_msix_entries[i].entry = i;
7008 /* Some boards advertise MSI but don't really support it */
7009 if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||
7010 (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))
7011 goto default_int_mode;
7012 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
7013 dev_info(&h->pdev->dev, "MSI-X capable controller\n");
7014 h->msix_vector = MAX_REPLY_QUEUES;
7015 if (h->msix_vector > num_online_cpus())
7016 h->msix_vector = num_online_cpus();
7017 err = pci_enable_msix_range(h->pdev, hpsa_msix_entries,
7020 dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", err);
7022 goto single_msi_mode;
7023 } else if (err < h->msix_vector) {
7024 dev_warn(&h->pdev->dev, "only %d MSI-X vectors "
7025 "available\n", err);
7027 h->msix_vector = err;
7028 for (i = 0; i < h->msix_vector; i++)
7029 h->intr[i] = hpsa_msix_entries[i].vector;
7033 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
7034 dev_info(&h->pdev->dev, "MSI capable controller\n");
7035 if (!pci_enable_msi(h->pdev))
7038 dev_warn(&h->pdev->dev, "MSI init failed\n");
7041 #endif /* CONFIG_PCI_MSI */
7042 /* if we get here we're going to use the default interrupt mode */
7043 h->intr[h->intr_mode] = h->pdev->irq;
7046 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
7049 u32 subsystem_vendor_id, subsystem_device_id;
7051 subsystem_vendor_id = pdev->subsystem_vendor;
7052 subsystem_device_id = pdev->subsystem_device;
7053 *board_id = ((subsystem_device_id << 16) & 0xffff0000) |
7054 subsystem_vendor_id;
7056 for (i = 0; i < ARRAY_SIZE(products); i++)
7057 if (*board_id == products[i].board_id)
7060 if ((subsystem_vendor_id != PCI_VENDOR_ID_HP &&
7061 subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) ||
7063 dev_warn(&pdev->dev, "unrecognized board ID: "
7064 "0x%08x, ignoring.\n", *board_id);
7067 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
7070 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
7071 unsigned long *memory_bar)
7075 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
7076 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
7077 /* addressing mode bits already removed */
7078 *memory_bar = pci_resource_start(pdev, i);
7079 dev_dbg(&pdev->dev, "memory BAR = %lx\n",
7083 dev_warn(&pdev->dev, "no memory BAR found\n");
7087 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
7093 iterations = HPSA_BOARD_READY_ITERATIONS;
7095 iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
7097 for (i = 0; i < iterations; i++) {
7098 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
7099 if (wait_for_ready) {
7100 if (scratchpad == HPSA_FIRMWARE_READY)
7103 if (scratchpad != HPSA_FIRMWARE_READY)
7106 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
7108 dev_warn(&pdev->dev, "board not ready, timed out.\n");
7112 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
7113 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
7116 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
7117 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
7118 *cfg_base_addr &= (u32) 0x0000ffff;
7119 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
7120 if (*cfg_base_addr_index == -1) {
7121 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
7127 static void hpsa_free_cfgtables(struct ctlr_info *h)
7129 if (h->transtable) {
7130 iounmap(h->transtable);
7131 h->transtable = NULL;
7134 iounmap(h->cfgtable);
7139 /* Find and map CISS config table and transfer table
7140 + * several items must be unmapped (freed) later
7142 static int hpsa_find_cfgtables(struct ctlr_info *h)
7146 u64 cfg_base_addr_index;
7150 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
7151 &cfg_base_addr_index, &cfg_offset);
7154 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
7155 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
7157 dev_err(&h->pdev->dev, "Failed mapping cfgtable\n");
7160 rc = write_driver_ver_to_cfgtable(h->cfgtable);
7163 /* Find performant mode table. */
7164 trans_offset = readl(&h->cfgtable->TransMethodOffset);
7165 h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
7166 cfg_base_addr_index)+cfg_offset+trans_offset,
7167 sizeof(*h->transtable));
7168 if (!h->transtable) {
7169 dev_err(&h->pdev->dev, "Failed mapping transfer table\n");
7170 hpsa_free_cfgtables(h);
7176 static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
7178 #define MIN_MAX_COMMANDS 16
7179 BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS);
7181 h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands);
7183 /* Limit commands in memory limited kdump scenario. */
7184 if (reset_devices && h->max_commands > 32)
7185 h->max_commands = 32;
7187 if (h->max_commands < MIN_MAX_COMMANDS) {
7188 dev_warn(&h->pdev->dev,
7189 "Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n",
7192 h->max_commands = MIN_MAX_COMMANDS;
7196 /* If the controller reports that the total max sg entries is greater than 512,
7197 * then we know that chained SG blocks work. (Original smart arrays did not
7198 * support chained SG blocks and would return zero for max sg entries.)
7200 static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h)
7202 return h->maxsgentries > 512;
7205 /* Interrogate the hardware for some limits:
7206 * max commands, max SG elements without chaining, and with chaining,
7207 * SG chain block size, etc.
7209 static void hpsa_find_board_params(struct ctlr_info *h)
7211 hpsa_get_max_perf_mode_cmds(h);
7212 h->nr_cmds = h->max_commands;
7213 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
7214 h->fw_support = readl(&(h->cfgtable->misc_fw_support));
7215 if (hpsa_supports_chained_sg_blocks(h)) {
7216 /* Limit in-command s/g elements to 32 save dma'able memory. */
7217 h->max_cmd_sg_entries = 32;
7218 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries;
7219 h->maxsgentries--; /* save one for chain pointer */
7222 * Original smart arrays supported at most 31 s/g entries
7223 * embedded inline in the command (trying to use more
7224 * would lock up the controller)
7226 h->max_cmd_sg_entries = 31;
7227 h->maxsgentries = 31; /* default to traditional values */
7231 /* Find out what task management functions are supported and cache */
7232 h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags));
7233 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags))
7234 dev_warn(&h->pdev->dev, "Physical aborts not supported\n");
7235 if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
7236 dev_warn(&h->pdev->dev, "Logical aborts not supported\n");
7237 if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags))
7238 dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n");
7241 static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
7243 if (!check_signature(h->cfgtable->Signature, "CISS", 4)) {
7244 dev_err(&h->pdev->dev, "not a valid CISS config table\n");
7250 static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
7254 driver_support = readl(&(h->cfgtable->driver_support));
7255 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
7257 driver_support |= ENABLE_SCSI_PREFETCH;
7259 driver_support |= ENABLE_UNIT_ATTN;
7260 writel(driver_support, &(h->cfgtable->driver_support));
7263 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
7264 * in a prefetch beyond physical memory.
7266 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
7270 if (h->board_id != 0x3225103C)
7272 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
7273 dma_prefetch |= 0x8000;
7274 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
7277 static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h)
7281 unsigned long flags;
7282 /* wait until the clear_event_notify bit 6 is cleared by controller. */
7283 for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) {
7284 spin_lock_irqsave(&h->lock, flags);
7285 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7286 spin_unlock_irqrestore(&h->lock, flags);
7287 if (!(doorbell_value & DOORBELL_CLEAR_EVENTS))
7289 /* delay and try again */
7290 msleep(CLEAR_EVENT_WAIT_INTERVAL);
7297 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
7301 unsigned long flags;
7303 /* under certain very rare conditions, this can take awhile.
7304 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
7305 * as we enter this code.)
7307 for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) {
7308 if (h->remove_in_progress)
7310 spin_lock_irqsave(&h->lock, flags);
7311 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7312 spin_unlock_irqrestore(&h->lock, flags);
7313 if (!(doorbell_value & CFGTBL_ChangeReq))
7315 /* delay and try again */
7316 msleep(MODE_CHANGE_WAIT_INTERVAL);
7323 /* return -ENODEV or other reason on error, 0 on success */
7324 static int hpsa_enter_simple_mode(struct ctlr_info *h)
7328 trans_support = readl(&(h->cfgtable->TransportSupport));
7329 if (!(trans_support & SIMPLE_MODE))
7332 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
7334 /* Update the field, and then ring the doorbell */
7335 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
7336 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
7337 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
7338 if (hpsa_wait_for_mode_change_ack(h))
7340 print_cfg_table(&h->pdev->dev, h->cfgtable);
7341 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
7343 h->transMethod = CFGTBL_Trans_Simple;
7346 dev_err(&h->pdev->dev, "failed to enter simple mode\n");
7350 /* free items allocated or mapped by hpsa_pci_init */
7351 static void hpsa_free_pci_init(struct ctlr_info *h)
7353 hpsa_free_cfgtables(h); /* pci_init 4 */
7354 iounmap(h->vaddr); /* pci_init 3 */
7356 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
7358 * call pci_disable_device before pci_release_regions per
7359 * Documentation/PCI/pci.txt
7361 pci_disable_device(h->pdev); /* pci_init 1 */
7362 pci_release_regions(h->pdev); /* pci_init 2 */
7365 /* several items must be freed later */
7366 static int hpsa_pci_init(struct ctlr_info *h)
7368 int prod_index, err;
7370 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id);
7373 h->product_name = products[prod_index].product_name;
7374 h->access = *(products[prod_index].access);
7376 h->needs_abort_tags_swizzled =
7377 ctlr_needs_abort_tags_swizzled(h->board_id);
7379 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
7380 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
7382 err = pci_enable_device(h->pdev);
7384 dev_err(&h->pdev->dev, "failed to enable PCI device\n");
7385 pci_disable_device(h->pdev);
7389 err = pci_request_regions(h->pdev, HPSA);
7391 dev_err(&h->pdev->dev,
7392 "failed to obtain PCI resources\n");
7393 pci_disable_device(h->pdev);
7397 pci_set_master(h->pdev);
7399 hpsa_interrupt_mode(h);
7400 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
7402 goto clean2; /* intmode+region, pci */
7403 h->vaddr = remap_pci_mem(h->paddr, 0x250);
7405 dev_err(&h->pdev->dev, "failed to remap PCI mem\n");
7407 goto clean2; /* intmode+region, pci */
7409 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
7411 goto clean3; /* vaddr, intmode+region, pci */
7412 err = hpsa_find_cfgtables(h);
7414 goto clean3; /* vaddr, intmode+region, pci */
7415 hpsa_find_board_params(h);
7417 if (!hpsa_CISS_signature_present(h)) {
7419 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7421 hpsa_set_driver_support_bits(h);
7422 hpsa_p600_dma_prefetch_quirk(h);
7423 err = hpsa_enter_simple_mode(h);
7425 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7428 clean4: /* cfgtables, vaddr, intmode+region, pci */
7429 hpsa_free_cfgtables(h);
7430 clean3: /* vaddr, intmode+region, pci */
7433 clean2: /* intmode+region, pci */
7434 hpsa_disable_interrupt_mode(h);
7436 * call pci_disable_device before pci_release_regions per
7437 * Documentation/PCI/pci.txt
7439 pci_disable_device(h->pdev);
7440 pci_release_regions(h->pdev);
7444 static void hpsa_hba_inquiry(struct ctlr_info *h)
7448 #define HBA_INQUIRY_BYTE_COUNT 64
7449 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
7450 if (!h->hba_inquiry_data)
7452 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
7453 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
7455 kfree(h->hba_inquiry_data);
7456 h->hba_inquiry_data = NULL;
7460 static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id)
7463 void __iomem *vaddr;
7468 /* kdump kernel is loading, we don't know in which state is
7469 * the pci interface. The dev->enable_cnt is equal zero
7470 * so we call enable+disable, wait a while and switch it on.
7472 rc = pci_enable_device(pdev);
7474 dev_warn(&pdev->dev, "Failed to enable PCI device\n");
7477 pci_disable_device(pdev);
7478 msleep(260); /* a randomly chosen number */
7479 rc = pci_enable_device(pdev);
7481 dev_warn(&pdev->dev, "failed to enable device.\n");
7485 pci_set_master(pdev);
7487 vaddr = pci_ioremap_bar(pdev, 0);
7488 if (vaddr == NULL) {
7492 writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET);
7495 /* Reset the controller with a PCI power-cycle or via doorbell */
7496 rc = hpsa_kdump_hard_reset_controller(pdev, board_id);
7498 /* -ENOTSUPP here means we cannot reset the controller
7499 * but it's already (and still) up and running in
7500 * "performant mode". Or, it might be 640x, which can't reset
7501 * due to concerns about shared bbwc between 6402/6404 pair.
7506 /* Now try to get the controller to respond to a no-op */
7507 dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n");
7508 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
7509 if (hpsa_noop(pdev) == 0)
7512 dev_warn(&pdev->dev, "no-op failed%s\n",
7513 (i < 11 ? "; re-trying" : ""));
7518 pci_disable_device(pdev);
7522 static void hpsa_free_cmd_pool(struct ctlr_info *h)
7524 kfree(h->cmd_pool_bits);
7525 h->cmd_pool_bits = NULL;
7527 pci_free_consistent(h->pdev,
7528 h->nr_cmds * sizeof(struct CommandList),
7530 h->cmd_pool_dhandle);
7532 h->cmd_pool_dhandle = 0;
7534 if (h->errinfo_pool) {
7535 pci_free_consistent(h->pdev,
7536 h->nr_cmds * sizeof(struct ErrorInfo),
7538 h->errinfo_pool_dhandle);
7539 h->errinfo_pool = NULL;
7540 h->errinfo_pool_dhandle = 0;
7544 static int hpsa_alloc_cmd_pool(struct ctlr_info *h)
7546 h->cmd_pool_bits = kzalloc(
7547 DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) *
7548 sizeof(unsigned long), GFP_KERNEL);
7549 h->cmd_pool = pci_alloc_consistent(h->pdev,
7550 h->nr_cmds * sizeof(*h->cmd_pool),
7551 &(h->cmd_pool_dhandle));
7552 h->errinfo_pool = pci_alloc_consistent(h->pdev,
7553 h->nr_cmds * sizeof(*h->errinfo_pool),
7554 &(h->errinfo_pool_dhandle));
7555 if ((h->cmd_pool_bits == NULL)
7556 || (h->cmd_pool == NULL)
7557 || (h->errinfo_pool == NULL)) {
7558 dev_err(&h->pdev->dev, "out of memory in %s", __func__);
7561 hpsa_preinitialize_commands(h);
7564 hpsa_free_cmd_pool(h);
7568 static void hpsa_irq_affinity_hints(struct ctlr_info *h)
7572 cpu = cpumask_first(cpu_online_mask);
7573 for (i = 0; i < h->msix_vector; i++) {
7574 irq_set_affinity_hint(h->intr[i], get_cpu_mask(cpu));
7575 cpu = cpumask_next(cpu, cpu_online_mask);
7579 /* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */
7580 static void hpsa_free_irqs(struct ctlr_info *h)
7584 if (!h->msix_vector || h->intr_mode != PERF_MODE_INT) {
7585 /* Single reply queue, only one irq to free */
7587 irq_set_affinity_hint(h->intr[i], NULL);
7588 free_irq(h->intr[i], &h->q[i]);
7593 for (i = 0; i < h->msix_vector; i++) {
7594 irq_set_affinity_hint(h->intr[i], NULL);
7595 free_irq(h->intr[i], &h->q[i]);
7598 for (; i < MAX_REPLY_QUEUES; i++)
7602 /* returns 0 on success; cleans up and returns -Enn on error */
7603 static int hpsa_request_irqs(struct ctlr_info *h,
7604 irqreturn_t (*msixhandler)(int, void *),
7605 irqreturn_t (*intxhandler)(int, void *))
7610 * initialize h->q[x] = x so that interrupt handlers know which
7613 for (i = 0; i < MAX_REPLY_QUEUES; i++)
7616 if (h->intr_mode == PERF_MODE_INT && h->msix_vector > 0) {
7617 /* If performant mode and MSI-X, use multiple reply queues */
7618 for (i = 0; i < h->msix_vector; i++) {
7619 sprintf(h->intrname[i], "%s-msix%d", h->devname, i);
7620 rc = request_irq(h->intr[i], msixhandler,
7626 dev_err(&h->pdev->dev,
7627 "failed to get irq %d for %s\n",
7628 h->intr[i], h->devname);
7629 for (j = 0; j < i; j++) {
7630 free_irq(h->intr[j], &h->q[j]);
7633 for (; j < MAX_REPLY_QUEUES; j++)
7638 hpsa_irq_affinity_hints(h);
7640 /* Use single reply pool */
7641 if (h->msix_vector > 0 || h->msi_vector) {
7643 sprintf(h->intrname[h->intr_mode],
7644 "%s-msix", h->devname);
7646 sprintf(h->intrname[h->intr_mode],
7647 "%s-msi", h->devname);
7648 rc = request_irq(h->intr[h->intr_mode],
7650 h->intrname[h->intr_mode],
7651 &h->q[h->intr_mode]);
7653 sprintf(h->intrname[h->intr_mode],
7654 "%s-intx", h->devname);
7655 rc = request_irq(h->intr[h->intr_mode],
7656 intxhandler, IRQF_SHARED,
7657 h->intrname[h->intr_mode],
7658 &h->q[h->intr_mode]);
7660 irq_set_affinity_hint(h->intr[h->intr_mode], NULL);
7663 dev_err(&h->pdev->dev, "failed to get irq %d for %s\n",
7664 h->intr[h->intr_mode], h->devname);
7671 static int hpsa_kdump_soft_reset(struct ctlr_info *h)
7674 hpsa_send_host_reset(h, RAID_CTLR_LUNID, HPSA_RESET_TYPE_CONTROLLER);
7676 dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n");
7677 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY);
7679 dev_warn(&h->pdev->dev, "Soft reset had no effect.\n");
7683 dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n");
7684 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
7686 dev_warn(&h->pdev->dev, "Board failed to become ready "
7687 "after soft reset.\n");
7694 static void hpsa_free_reply_queues(struct ctlr_info *h)
7698 for (i = 0; i < h->nreply_queues; i++) {
7699 if (!h->reply_queue[i].head)
7701 pci_free_consistent(h->pdev,
7702 h->reply_queue_size,
7703 h->reply_queue[i].head,
7704 h->reply_queue[i].busaddr);
7705 h->reply_queue[i].head = NULL;
7706 h->reply_queue[i].busaddr = 0;
7708 h->reply_queue_size = 0;
7711 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h)
7713 hpsa_free_performant_mode(h); /* init_one 7 */
7714 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
7715 hpsa_free_cmd_pool(h); /* init_one 5 */
7716 hpsa_free_irqs(h); /* init_one 4 */
7717 scsi_host_put(h->scsi_host); /* init_one 3 */
7718 h->scsi_host = NULL; /* init_one 3 */
7719 hpsa_free_pci_init(h); /* init_one 2_5 */
7720 free_percpu(h->lockup_detected); /* init_one 2 */
7721 h->lockup_detected = NULL; /* init_one 2 */
7722 if (h->resubmit_wq) {
7723 destroy_workqueue(h->resubmit_wq); /* init_one 1 */
7724 h->resubmit_wq = NULL;
7726 if (h->rescan_ctlr_wq) {
7727 destroy_workqueue(h->rescan_ctlr_wq);
7728 h->rescan_ctlr_wq = NULL;
7730 kfree(h); /* init_one 1 */
7733 /* Called when controller lockup detected. */
7734 static void fail_all_outstanding_cmds(struct ctlr_info *h)
7737 struct CommandList *c;
7740 flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */
7741 for (i = 0; i < h->nr_cmds; i++) {
7742 c = h->cmd_pool + i;
7743 refcount = atomic_inc_return(&c->refcount);
7745 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
7747 atomic_dec(&h->commands_outstanding);
7752 dev_warn(&h->pdev->dev,
7753 "failed %d commands in fail_all\n", failcount);
7756 static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value)
7760 for_each_online_cpu(cpu) {
7761 u32 *lockup_detected;
7762 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
7763 *lockup_detected = value;
7765 wmb(); /* be sure the per-cpu variables are out to memory */
7768 static void controller_lockup_detected(struct ctlr_info *h)
7770 unsigned long flags;
7771 u32 lockup_detected;
7773 h->access.set_intr_mask(h, HPSA_INTR_OFF);
7774 spin_lock_irqsave(&h->lock, flags);
7775 lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
7776 if (!lockup_detected) {
7777 /* no heartbeat, but controller gave us a zero. */
7778 dev_warn(&h->pdev->dev,
7779 "lockup detected after %d but scratchpad register is zero\n",
7780 h->heartbeat_sample_interval / HZ);
7781 lockup_detected = 0xffffffff;
7783 set_lockup_detected_for_all_cpus(h, lockup_detected);
7784 spin_unlock_irqrestore(&h->lock, flags);
7785 dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n",
7786 lockup_detected, h->heartbeat_sample_interval / HZ);
7787 pci_disable_device(h->pdev);
7788 fail_all_outstanding_cmds(h);
7791 static int detect_controller_lockup(struct ctlr_info *h)
7795 unsigned long flags;
7797 now = get_jiffies_64();
7798 /* If we've received an interrupt recently, we're ok. */
7799 if (time_after64(h->last_intr_timestamp +
7800 (h->heartbeat_sample_interval), now))
7804 * If we've already checked the heartbeat recently, we're ok.
7805 * This could happen if someone sends us a signal. We
7806 * otherwise don't care about signals in this thread.
7808 if (time_after64(h->last_heartbeat_timestamp +
7809 (h->heartbeat_sample_interval), now))
7812 /* If heartbeat has not changed since we last looked, we're not ok. */
7813 spin_lock_irqsave(&h->lock, flags);
7814 heartbeat = readl(&h->cfgtable->HeartBeat);
7815 spin_unlock_irqrestore(&h->lock, flags);
7816 if (h->last_heartbeat == heartbeat) {
7817 controller_lockup_detected(h);
7822 h->last_heartbeat = heartbeat;
7823 h->last_heartbeat_timestamp = now;
7827 static void hpsa_ack_ctlr_events(struct ctlr_info *h)
7832 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
7835 /* Ask the controller to clear the events we're handling. */
7836 if ((h->transMethod & (CFGTBL_Trans_io_accel1
7837 | CFGTBL_Trans_io_accel2)) &&
7838 (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE ||
7839 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) {
7841 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE)
7842 event_type = "state change";
7843 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)
7844 event_type = "configuration change";
7845 /* Stop sending new RAID offload reqs via the IO accelerator */
7846 scsi_block_requests(h->scsi_host);
7847 for (i = 0; i < h->ndevices; i++)
7848 h->dev[i]->offload_enabled = 0;
7849 hpsa_drain_accel_commands(h);
7850 /* Set 'accelerator path config change' bit */
7851 dev_warn(&h->pdev->dev,
7852 "Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n",
7853 h->events, event_type);
7854 writel(h->events, &(h->cfgtable->clear_event_notify));
7855 /* Set the "clear event notify field update" bit 6 */
7856 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
7857 /* Wait until ctlr clears 'clear event notify field', bit 6 */
7858 hpsa_wait_for_clear_event_notify_ack(h);
7859 scsi_unblock_requests(h->scsi_host);
7861 /* Acknowledge controller notification events. */
7862 writel(h->events, &(h->cfgtable->clear_event_notify));
7863 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
7864 hpsa_wait_for_clear_event_notify_ack(h);
7866 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
7867 hpsa_wait_for_mode_change_ack(h);
7873 /* Check a register on the controller to see if there are configuration
7874 * changes (added/changed/removed logical drives, etc.) which mean that
7875 * we should rescan the controller for devices.
7876 * Also check flag for driver-initiated rescan.
7878 static int hpsa_ctlr_needs_rescan(struct ctlr_info *h)
7880 if (h->drv_req_rescan) {
7881 h->drv_req_rescan = 0;
7885 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
7888 h->events = readl(&(h->cfgtable->event_notify));
7889 return h->events & RESCAN_REQUIRED_EVENT_BITS;
7893 * Check if any of the offline devices have become ready
7895 static int hpsa_offline_devices_ready(struct ctlr_info *h)
7897 unsigned long flags;
7898 struct offline_device_entry *d;
7899 struct list_head *this, *tmp;
7901 spin_lock_irqsave(&h->offline_device_lock, flags);
7902 list_for_each_safe(this, tmp, &h->offline_device_list) {
7903 d = list_entry(this, struct offline_device_entry,
7905 spin_unlock_irqrestore(&h->offline_device_lock, flags);
7906 if (!hpsa_volume_offline(h, d->scsi3addr)) {
7907 spin_lock_irqsave(&h->offline_device_lock, flags);
7908 list_del(&d->offline_list);
7909 spin_unlock_irqrestore(&h->offline_device_lock, flags);
7912 spin_lock_irqsave(&h->offline_device_lock, flags);
7914 spin_unlock_irqrestore(&h->offline_device_lock, flags);
7918 static void hpsa_rescan_ctlr_worker(struct work_struct *work)
7920 unsigned long flags;
7921 struct ctlr_info *h = container_of(to_delayed_work(work),
7922 struct ctlr_info, rescan_ctlr_work);
7925 if (h->remove_in_progress)
7928 if (hpsa_ctlr_needs_rescan(h) || hpsa_offline_devices_ready(h)) {
7929 scsi_host_get(h->scsi_host);
7930 hpsa_ack_ctlr_events(h);
7931 hpsa_scan_start(h->scsi_host);
7932 scsi_host_put(h->scsi_host);
7934 spin_lock_irqsave(&h->lock, flags);
7935 if (!h->remove_in_progress)
7936 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
7937 h->heartbeat_sample_interval);
7938 spin_unlock_irqrestore(&h->lock, flags);
7941 static void hpsa_monitor_ctlr_worker(struct work_struct *work)
7943 unsigned long flags;
7944 struct ctlr_info *h = container_of(to_delayed_work(work),
7945 struct ctlr_info, monitor_ctlr_work);
7947 detect_controller_lockup(h);
7948 if (lockup_detected(h))
7951 spin_lock_irqsave(&h->lock, flags);
7952 if (!h->remove_in_progress)
7953 schedule_delayed_work(&h->monitor_ctlr_work,
7954 h->heartbeat_sample_interval);
7955 spin_unlock_irqrestore(&h->lock, flags);
7958 static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h,
7961 struct workqueue_struct *wq = NULL;
7963 wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr);
7965 dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name);
7970 static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
7973 struct ctlr_info *h;
7974 int try_soft_reset = 0;
7975 unsigned long flags;
7978 if (number_of_controllers == 0)
7979 printk(KERN_INFO DRIVER_NAME "\n");
7981 rc = hpsa_lookup_board_id(pdev, &board_id);
7983 dev_warn(&pdev->dev, "Board ID not found\n");
7987 rc = hpsa_init_reset_devices(pdev, board_id);
7989 if (rc != -ENOTSUPP)
7991 /* If the reset fails in a particular way (it has no way to do
7992 * a proper hard reset, so returns -ENOTSUPP) we can try to do
7993 * a soft reset once we get the controller configured up to the
7994 * point that it can accept a command.
8000 reinit_after_soft_reset:
8002 /* Command structures must be aligned on a 32-byte boundary because
8003 * the 5 lower bits of the address are used by the hardware. and by
8004 * the driver. See comments in hpsa.h for more info.
8006 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
8007 h = kzalloc(sizeof(*h), GFP_KERNEL);
8009 dev_err(&pdev->dev, "Failed to allocate controller head\n");
8015 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
8016 INIT_LIST_HEAD(&h->offline_device_list);
8017 spin_lock_init(&h->lock);
8018 spin_lock_init(&h->offline_device_lock);
8019 spin_lock_init(&h->scan_lock);
8020 atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS);
8021 atomic_set(&h->abort_cmds_available, HPSA_CMDS_RESERVED_FOR_ABORTS);
8023 /* Allocate and clear per-cpu variable lockup_detected */
8024 h->lockup_detected = alloc_percpu(u32);
8025 if (!h->lockup_detected) {
8026 dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n");
8028 goto clean1; /* aer/h */
8030 set_lockup_detected_for_all_cpus(h, 0);
8032 rc = hpsa_pci_init(h);
8034 goto clean2; /* lu, aer/h */
8036 /* relies on h-> settings made by hpsa_pci_init, including
8037 * interrupt_mode h->intr */
8038 rc = hpsa_scsi_host_alloc(h);
8040 goto clean2_5; /* pci, lu, aer/h */
8042 sprintf(h->devname, HPSA "%d", h->scsi_host->host_no);
8043 h->ctlr = number_of_controllers;
8044 number_of_controllers++;
8046 /* configure PCI DMA stuff */
8047 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8051 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8055 dev_err(&pdev->dev, "no suitable DMA available\n");
8056 goto clean3; /* shost, pci, lu, aer/h */
8060 /* make sure the board interrupts are off */
8061 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8063 rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx);
8065 goto clean3; /* shost, pci, lu, aer/h */
8066 rc = hpsa_alloc_cmd_pool(h);
8068 goto clean4; /* irq, shost, pci, lu, aer/h */
8069 rc = hpsa_alloc_sg_chain_blocks(h);
8071 goto clean5; /* cmd, irq, shost, pci, lu, aer/h */
8072 init_waitqueue_head(&h->scan_wait_queue);
8073 init_waitqueue_head(&h->abort_cmd_wait_queue);
8074 init_waitqueue_head(&h->event_sync_wait_queue);
8075 mutex_init(&h->reset_mutex);
8076 h->scan_finished = 1; /* no scan currently in progress */
8078 pci_set_drvdata(pdev, h);
8081 spin_lock_init(&h->devlock);
8082 rc = hpsa_put_ctlr_into_performant_mode(h);
8084 goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */
8086 /* hook into SCSI subsystem */
8087 rc = hpsa_scsi_add_host(h);
8089 goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8091 /* create the resubmit workqueue */
8092 h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan");
8093 if (!h->rescan_ctlr_wq) {
8098 h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit");
8099 if (!h->resubmit_wq) {
8101 goto clean7; /* aer/h */
8105 * At this point, the controller is ready to take commands.
8106 * Now, if reset_devices and the hard reset didn't work, try
8107 * the soft reset and see if that works.
8109 if (try_soft_reset) {
8111 /* This is kind of gross. We may or may not get a completion
8112 * from the soft reset command, and if we do, then the value
8113 * from the fifo may or may not be valid. So, we wait 10 secs
8114 * after the reset throwing away any completions we get during
8115 * that time. Unregister the interrupt handler and register
8116 * fake ones to scoop up any residual completions.
8118 spin_lock_irqsave(&h->lock, flags);
8119 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8120 spin_unlock_irqrestore(&h->lock, flags);
8122 rc = hpsa_request_irqs(h, hpsa_msix_discard_completions,
8123 hpsa_intx_discard_completions);
8125 dev_warn(&h->pdev->dev,
8126 "Failed to request_irq after soft reset.\n");
8128 * cannot goto clean7 or free_irqs will be called
8129 * again. Instead, do its work
8131 hpsa_free_performant_mode(h); /* clean7 */
8132 hpsa_free_sg_chain_blocks(h); /* clean6 */
8133 hpsa_free_cmd_pool(h); /* clean5 */
8135 * skip hpsa_free_irqs(h) clean4 since that
8136 * was just called before request_irqs failed
8141 rc = hpsa_kdump_soft_reset(h);
8143 /* Neither hard nor soft reset worked, we're hosed. */
8146 dev_info(&h->pdev->dev, "Board READY.\n");
8147 dev_info(&h->pdev->dev,
8148 "Waiting for stale completions to drain.\n");
8149 h->access.set_intr_mask(h, HPSA_INTR_ON);
8151 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8153 rc = controller_reset_failed(h->cfgtable);
8155 dev_info(&h->pdev->dev,
8156 "Soft reset appears to have failed.\n");
8158 /* since the controller's reset, we have to go back and re-init
8159 * everything. Easiest to just forget what we've done and do it
8162 hpsa_undo_allocations_after_kdump_soft_reset(h);
8165 /* don't goto clean, we already unallocated */
8168 goto reinit_after_soft_reset;
8171 /* Enable Accelerated IO path at driver layer */
8172 h->acciopath_status = 1;
8175 /* Turn the interrupts on so we can service requests */
8176 h->access.set_intr_mask(h, HPSA_INTR_ON);
8178 hpsa_hba_inquiry(h);
8180 /* Monitor the controller for firmware lockups */
8181 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
8182 INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);
8183 schedule_delayed_work(&h->monitor_ctlr_work,
8184 h->heartbeat_sample_interval);
8185 INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker);
8186 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8187 h->heartbeat_sample_interval);
8190 clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8191 hpsa_free_performant_mode(h);
8192 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8193 clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */
8194 hpsa_free_sg_chain_blocks(h);
8195 clean5: /* cmd, irq, shost, pci, lu, aer/h */
8196 hpsa_free_cmd_pool(h);
8197 clean4: /* irq, shost, pci, lu, aer/h */
8199 clean3: /* shost, pci, lu, aer/h */
8200 scsi_host_put(h->scsi_host);
8201 h->scsi_host = NULL;
8202 clean2_5: /* pci, lu, aer/h */
8203 hpsa_free_pci_init(h);
8204 clean2: /* lu, aer/h */
8205 if (h->lockup_detected) {
8206 free_percpu(h->lockup_detected);
8207 h->lockup_detected = NULL;
8209 clean1: /* wq/aer/h */
8210 if (h->resubmit_wq) {
8211 destroy_workqueue(h->resubmit_wq);
8212 h->resubmit_wq = NULL;
8214 if (h->rescan_ctlr_wq) {
8215 destroy_workqueue(h->rescan_ctlr_wq);
8216 h->rescan_ctlr_wq = NULL;
8222 static void hpsa_flush_cache(struct ctlr_info *h)
8225 struct CommandList *c;
8228 if (unlikely(lockup_detected(h)))
8230 flush_buf = kzalloc(4, GFP_KERNEL);
8236 if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
8237 RAID_CTLR_LUNID, TYPE_CMD)) {
8240 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
8241 PCI_DMA_TODEVICE, NO_TIMEOUT);
8244 if (c->err_info->CommandStatus != 0)
8246 dev_warn(&h->pdev->dev,
8247 "error flushing cache on controller\n");
8252 static void hpsa_shutdown(struct pci_dev *pdev)
8254 struct ctlr_info *h;
8256 h = pci_get_drvdata(pdev);
8257 /* Turn board interrupts off and send the flush cache command
8258 * sendcmd will turn off interrupt, and send the flush...
8259 * To write all data in the battery backed cache to disks
8261 hpsa_flush_cache(h);
8262 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8263 hpsa_free_irqs(h); /* init_one 4 */
8264 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
8267 static void hpsa_free_device_info(struct ctlr_info *h)
8271 for (i = 0; i < h->ndevices; i++) {
8277 static void hpsa_remove_one(struct pci_dev *pdev)
8279 struct ctlr_info *h;
8280 unsigned long flags;
8282 if (pci_get_drvdata(pdev) == NULL) {
8283 dev_err(&pdev->dev, "unable to remove device\n");
8286 h = pci_get_drvdata(pdev);
8288 /* Get rid of any controller monitoring work items */
8289 spin_lock_irqsave(&h->lock, flags);
8290 h->remove_in_progress = 1;
8291 spin_unlock_irqrestore(&h->lock, flags);
8292 cancel_delayed_work_sync(&h->monitor_ctlr_work);
8293 cancel_delayed_work_sync(&h->rescan_ctlr_work);
8294 destroy_workqueue(h->rescan_ctlr_wq);
8295 destroy_workqueue(h->resubmit_wq);
8298 * Call before disabling interrupts.
8299 * scsi_remove_host can trigger I/O operations especially
8300 * when multipath is enabled. There can be SYNCHRONIZE CACHE
8301 * operations which cannot complete and will hang the system.
8304 scsi_remove_host(h->scsi_host); /* init_one 8 */
8305 /* includes hpsa_free_irqs - init_one 4 */
8306 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
8307 hpsa_shutdown(pdev);
8309 hpsa_free_device_info(h); /* scan */
8311 kfree(h->hba_inquiry_data); /* init_one 10 */
8312 h->hba_inquiry_data = NULL; /* init_one 10 */
8313 hpsa_free_ioaccel2_sg_chain_blocks(h);
8314 hpsa_free_performant_mode(h); /* init_one 7 */
8315 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
8316 hpsa_free_cmd_pool(h); /* init_one 5 */
8318 /* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */
8320 scsi_host_put(h->scsi_host); /* init_one 3 */
8321 h->scsi_host = NULL; /* init_one 3 */
8323 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
8324 hpsa_free_pci_init(h); /* init_one 2.5 */
8326 free_percpu(h->lockup_detected); /* init_one 2 */
8327 h->lockup_detected = NULL; /* init_one 2 */
8328 /* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */
8329 kfree(h); /* init_one 1 */
8332 static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
8333 __attribute__((unused)) pm_message_t state)
8338 static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
8343 static struct pci_driver hpsa_pci_driver = {
8345 .probe = hpsa_init_one,
8346 .remove = hpsa_remove_one,
8347 .id_table = hpsa_pci_device_id, /* id_table */
8348 .shutdown = hpsa_shutdown,
8349 .suspend = hpsa_suspend,
8350 .resume = hpsa_resume,
8353 /* Fill in bucket_map[], given nsgs (the max number of
8354 * scatter gather elements supported) and bucket[],
8355 * which is an array of 8 integers. The bucket[] array
8356 * contains 8 different DMA transfer sizes (in 16
8357 * byte increments) which the controller uses to fetch
8358 * commands. This function fills in bucket_map[], which
8359 * maps a given number of scatter gather elements to one of
8360 * the 8 DMA transfer sizes. The point of it is to allow the
8361 * controller to only do as much DMA as needed to fetch the
8362 * command, with the DMA transfer size encoded in the lower
8363 * bits of the command address.
8365 static void calc_bucket_map(int bucket[], int num_buckets,
8366 int nsgs, int min_blocks, u32 *bucket_map)
8370 /* Note, bucket_map must have nsgs+1 entries. */
8371 for (i = 0; i <= nsgs; i++) {
8372 /* Compute size of a command with i SG entries */
8373 size = i + min_blocks;
8374 b = num_buckets; /* Assume the biggest bucket */
8375 /* Find the bucket that is just big enough */
8376 for (j = 0; j < num_buckets; j++) {
8377 if (bucket[j] >= size) {
8382 /* for a command with i SG entries, use bucket b. */
8388 * return -ENODEV on err, 0 on success (or no action)
8389 * allocates numerous items that must be freed later
8391 static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
8394 unsigned long register_value;
8395 unsigned long transMethod = CFGTBL_Trans_Performant |
8396 (trans_support & CFGTBL_Trans_use_short_tags) |
8397 CFGTBL_Trans_enable_directed_msix |
8398 (trans_support & (CFGTBL_Trans_io_accel1 |
8399 CFGTBL_Trans_io_accel2));
8400 struct access_method access = SA5_performant_access;
8402 /* This is a bit complicated. There are 8 registers on
8403 * the controller which we write to to tell it 8 different
8404 * sizes of commands which there may be. It's a way of
8405 * reducing the DMA done to fetch each command. Encoded into
8406 * each command's tag are 3 bits which communicate to the controller
8407 * which of the eight sizes that command fits within. The size of
8408 * each command depends on how many scatter gather entries there are.
8409 * Each SG entry requires 16 bytes. The eight registers are programmed
8410 * with the number of 16-byte blocks a command of that size requires.
8411 * The smallest command possible requires 5 such 16 byte blocks.
8412 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
8413 * blocks. Note, this only extends to the SG entries contained
8414 * within the command block, and does not extend to chained blocks
8415 * of SG elements. bft[] contains the eight values we write to
8416 * the registers. They are not evenly distributed, but have more
8417 * sizes for small commands, and fewer sizes for larger commands.
8419 int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4};
8420 #define MIN_IOACCEL2_BFT_ENTRY 5
8421 #define HPSA_IOACCEL2_HEADER_SZ 4
8422 int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12,
8423 13, 14, 15, 16, 17, 18, 19,
8424 HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES};
8425 BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16);
8426 BUILD_BUG_ON(ARRAY_SIZE(bft) != 8);
8427 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) >
8428 16 * MIN_IOACCEL2_BFT_ENTRY);
8429 BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16);
8430 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4);
8431 /* 5 = 1 s/g entry or 4k
8432 * 6 = 2 s/g entry or 8k
8433 * 8 = 4 s/g entry or 16k
8434 * 10 = 6 s/g entry or 24k
8437 /* If the controller supports either ioaccel method then
8438 * we can also use the RAID stack submit path that does not
8439 * perform the superfluous readl() after each command submission.
8441 if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2))
8442 access = SA5_performant_access_no_read;
8444 /* Controller spec: zero out this buffer. */
8445 for (i = 0; i < h->nreply_queues; i++)
8446 memset(h->reply_queue[i].head, 0, h->reply_queue_size);
8448 bft[7] = SG_ENTRIES_IN_CMD + 4;
8449 calc_bucket_map(bft, ARRAY_SIZE(bft),
8450 SG_ENTRIES_IN_CMD, 4, h->blockFetchTable);
8451 for (i = 0; i < 8; i++)
8452 writel(bft[i], &h->transtable->BlockFetch[i]);
8454 /* size of controller ring buffer */
8455 writel(h->max_commands, &h->transtable->RepQSize);
8456 writel(h->nreply_queues, &h->transtable->RepQCount);
8457 writel(0, &h->transtable->RepQCtrAddrLow32);
8458 writel(0, &h->transtable->RepQCtrAddrHigh32);
8460 for (i = 0; i < h->nreply_queues; i++) {
8461 writel(0, &h->transtable->RepQAddr[i].upper);
8462 writel(h->reply_queue[i].busaddr,
8463 &h->transtable->RepQAddr[i].lower);
8466 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
8467 writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest));
8469 * enable outbound interrupt coalescing in accelerator mode;
8471 if (trans_support & CFGTBL_Trans_io_accel1) {
8472 access = SA5_ioaccel_mode1_access;
8473 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
8474 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
8476 if (trans_support & CFGTBL_Trans_io_accel2) {
8477 access = SA5_ioaccel_mode2_access;
8478 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
8479 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
8482 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
8483 if (hpsa_wait_for_mode_change_ack(h)) {
8484 dev_err(&h->pdev->dev,
8485 "performant mode problem - doorbell timeout\n");
8488 register_value = readl(&(h->cfgtable->TransportActive));
8489 if (!(register_value & CFGTBL_Trans_Performant)) {
8490 dev_err(&h->pdev->dev,
8491 "performant mode problem - transport not active\n");
8494 /* Change the access methods to the performant access methods */
8496 h->transMethod = transMethod;
8498 if (!((trans_support & CFGTBL_Trans_io_accel1) ||
8499 (trans_support & CFGTBL_Trans_io_accel2)))
8502 if (trans_support & CFGTBL_Trans_io_accel1) {
8503 /* Set up I/O accelerator mode */
8504 for (i = 0; i < h->nreply_queues; i++) {
8505 writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX);
8506 h->reply_queue[i].current_entry =
8507 readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX);
8509 bft[7] = h->ioaccel_maxsg + 8;
8510 calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8,
8511 h->ioaccel1_blockFetchTable);
8513 /* initialize all reply queue entries to unused */
8514 for (i = 0; i < h->nreply_queues; i++)
8515 memset(h->reply_queue[i].head,
8516 (u8) IOACCEL_MODE1_REPLY_UNUSED,
8517 h->reply_queue_size);
8519 /* set all the constant fields in the accelerator command
8520 * frames once at init time to save CPU cycles later.
8522 for (i = 0; i < h->nr_cmds; i++) {
8523 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i];
8525 cp->function = IOACCEL1_FUNCTION_SCSIIO;
8526 cp->err_info = (u32) (h->errinfo_pool_dhandle +
8527 (i * sizeof(struct ErrorInfo)));
8528 cp->err_info_len = sizeof(struct ErrorInfo);
8529 cp->sgl_offset = IOACCEL1_SGLOFFSET;
8530 cp->host_context_flags =
8531 cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT);
8532 cp->timeout_sec = 0;
8535 cpu_to_le64((i << DIRECT_LOOKUP_SHIFT));
8537 cpu_to_le64(h->ioaccel_cmd_pool_dhandle +
8538 (i * sizeof(struct io_accel1_cmd)));
8540 } else if (trans_support & CFGTBL_Trans_io_accel2) {
8541 u64 cfg_offset, cfg_base_addr_index;
8542 u32 bft2_offset, cfg_base_addr;
8545 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
8546 &cfg_base_addr_index, &cfg_offset);
8547 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64);
8548 bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ;
8549 calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg,
8550 4, h->ioaccel2_blockFetchTable);
8551 bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset);
8552 BUILD_BUG_ON(offsetof(struct CfgTable,
8553 io_accel_request_size_offset) != 0xb8);
8554 h->ioaccel2_bft2_regs =
8555 remap_pci_mem(pci_resource_start(h->pdev,
8556 cfg_base_addr_index) +
8557 cfg_offset + bft2_offset,
8559 sizeof(*h->ioaccel2_bft2_regs));
8560 for (i = 0; i < ARRAY_SIZE(bft2); i++)
8561 writel(bft2[i], &h->ioaccel2_bft2_regs[i]);
8563 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
8564 if (hpsa_wait_for_mode_change_ack(h)) {
8565 dev_err(&h->pdev->dev,
8566 "performant mode problem - enabling ioaccel mode\n");
8572 /* Free ioaccel1 mode command blocks and block fetch table */
8573 static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h)
8575 if (h->ioaccel_cmd_pool) {
8576 pci_free_consistent(h->pdev,
8577 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
8578 h->ioaccel_cmd_pool,
8579 h->ioaccel_cmd_pool_dhandle);
8580 h->ioaccel_cmd_pool = NULL;
8581 h->ioaccel_cmd_pool_dhandle = 0;
8583 kfree(h->ioaccel1_blockFetchTable);
8584 h->ioaccel1_blockFetchTable = NULL;
8587 /* Allocate ioaccel1 mode command blocks and block fetch table */
8588 static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h)
8591 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
8592 if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES)
8593 h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES;
8595 /* Command structures must be aligned on a 128-byte boundary
8596 * because the 7 lower bits of the address are used by the
8599 BUILD_BUG_ON(sizeof(struct io_accel1_cmd) %
8600 IOACCEL1_COMMANDLIST_ALIGNMENT);
8601 h->ioaccel_cmd_pool =
8602 pci_alloc_consistent(h->pdev,
8603 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
8604 &(h->ioaccel_cmd_pool_dhandle));
8606 h->ioaccel1_blockFetchTable =
8607 kmalloc(((h->ioaccel_maxsg + 1) *
8608 sizeof(u32)), GFP_KERNEL);
8610 if ((h->ioaccel_cmd_pool == NULL) ||
8611 (h->ioaccel1_blockFetchTable == NULL))
8614 memset(h->ioaccel_cmd_pool, 0,
8615 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool));
8619 hpsa_free_ioaccel1_cmd_and_bft(h);
8623 /* Free ioaccel2 mode command blocks and block fetch table */
8624 static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h)
8626 hpsa_free_ioaccel2_sg_chain_blocks(h);
8628 if (h->ioaccel2_cmd_pool) {
8629 pci_free_consistent(h->pdev,
8630 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
8631 h->ioaccel2_cmd_pool,
8632 h->ioaccel2_cmd_pool_dhandle);
8633 h->ioaccel2_cmd_pool = NULL;
8634 h->ioaccel2_cmd_pool_dhandle = 0;
8636 kfree(h->ioaccel2_blockFetchTable);
8637 h->ioaccel2_blockFetchTable = NULL;
8640 /* Allocate ioaccel2 mode command blocks and block fetch table */
8641 static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h)
8645 /* Allocate ioaccel2 mode command blocks and block fetch table */
8648 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
8649 if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES)
8650 h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES;
8652 BUILD_BUG_ON(sizeof(struct io_accel2_cmd) %
8653 IOACCEL2_COMMANDLIST_ALIGNMENT);
8654 h->ioaccel2_cmd_pool =
8655 pci_alloc_consistent(h->pdev,
8656 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
8657 &(h->ioaccel2_cmd_pool_dhandle));
8659 h->ioaccel2_blockFetchTable =
8660 kmalloc(((h->ioaccel_maxsg + 1) *
8661 sizeof(u32)), GFP_KERNEL);
8663 if ((h->ioaccel2_cmd_pool == NULL) ||
8664 (h->ioaccel2_blockFetchTable == NULL)) {
8669 rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h);
8673 memset(h->ioaccel2_cmd_pool, 0,
8674 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool));
8678 hpsa_free_ioaccel2_cmd_and_bft(h);
8682 /* Free items allocated by hpsa_put_ctlr_into_performant_mode */
8683 static void hpsa_free_performant_mode(struct ctlr_info *h)
8685 kfree(h->blockFetchTable);
8686 h->blockFetchTable = NULL;
8687 hpsa_free_reply_queues(h);
8688 hpsa_free_ioaccel1_cmd_and_bft(h);
8689 hpsa_free_ioaccel2_cmd_and_bft(h);
8692 /* return -ENODEV on error, 0 on success (or no action)
8693 * allocates numerous items that must be freed later
8695 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
8698 unsigned long transMethod = CFGTBL_Trans_Performant |
8699 CFGTBL_Trans_use_short_tags;
8702 if (hpsa_simple_mode)
8705 trans_support = readl(&(h->cfgtable->TransportSupport));
8706 if (!(trans_support & PERFORMANT_MODE))
8709 /* Check for I/O accelerator mode support */
8710 if (trans_support & CFGTBL_Trans_io_accel1) {
8711 transMethod |= CFGTBL_Trans_io_accel1 |
8712 CFGTBL_Trans_enable_directed_msix;
8713 rc = hpsa_alloc_ioaccel1_cmd_and_bft(h);
8716 } else if (trans_support & CFGTBL_Trans_io_accel2) {
8717 transMethod |= CFGTBL_Trans_io_accel2 |
8718 CFGTBL_Trans_enable_directed_msix;
8719 rc = hpsa_alloc_ioaccel2_cmd_and_bft(h);
8724 h->nreply_queues = h->msix_vector > 0 ? h->msix_vector : 1;
8725 hpsa_get_max_perf_mode_cmds(h);
8726 /* Performant mode ring buffer and supporting data structures */
8727 h->reply_queue_size = h->max_commands * sizeof(u64);
8729 for (i = 0; i < h->nreply_queues; i++) {
8730 h->reply_queue[i].head = pci_alloc_consistent(h->pdev,
8731 h->reply_queue_size,
8732 &(h->reply_queue[i].busaddr));
8733 if (!h->reply_queue[i].head) {
8735 goto clean1; /* rq, ioaccel */
8737 h->reply_queue[i].size = h->max_commands;
8738 h->reply_queue[i].wraparound = 1; /* spec: init to 1 */
8739 h->reply_queue[i].current_entry = 0;
8742 /* Need a block fetch table for performant mode */
8743 h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) *
8744 sizeof(u32)), GFP_KERNEL);
8745 if (!h->blockFetchTable) {
8747 goto clean1; /* rq, ioaccel */
8750 rc = hpsa_enter_performant_mode(h, trans_support);
8752 goto clean2; /* bft, rq, ioaccel */
8755 clean2: /* bft, rq, ioaccel */
8756 kfree(h->blockFetchTable);
8757 h->blockFetchTable = NULL;
8758 clean1: /* rq, ioaccel */
8759 hpsa_free_reply_queues(h);
8760 hpsa_free_ioaccel1_cmd_and_bft(h);
8761 hpsa_free_ioaccel2_cmd_and_bft(h);
8765 static int is_accelerated_cmd(struct CommandList *c)
8767 return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2;
8770 static void hpsa_drain_accel_commands(struct ctlr_info *h)
8772 struct CommandList *c = NULL;
8773 int i, accel_cmds_out;
8776 do { /* wait for all outstanding ioaccel commands to drain out */
8778 for (i = 0; i < h->nr_cmds; i++) {
8779 c = h->cmd_pool + i;
8780 refcount = atomic_inc_return(&c->refcount);
8781 if (refcount > 1) /* Command is allocated */
8782 accel_cmds_out += is_accelerated_cmd(c);
8785 if (accel_cmds_out <= 0)
8792 * This is it. Register the PCI driver information for the cards we control
8793 * the OS will call our registered routines when it finds one of our cards.
8795 static int __init hpsa_init(void)
8797 return pci_register_driver(&hpsa_pci_driver);
8800 static void __exit hpsa_cleanup(void)
8802 pci_unregister_driver(&hpsa_pci_driver);
8805 static void __attribute__((unused)) verify_offsets(void)
8807 #define VERIFY_OFFSET(member, offset) \
8808 BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset)
8810 VERIFY_OFFSET(structure_size, 0);
8811 VERIFY_OFFSET(volume_blk_size, 4);
8812 VERIFY_OFFSET(volume_blk_cnt, 8);
8813 VERIFY_OFFSET(phys_blk_shift, 16);
8814 VERIFY_OFFSET(parity_rotation_shift, 17);
8815 VERIFY_OFFSET(strip_size, 18);
8816 VERIFY_OFFSET(disk_starting_blk, 20);
8817 VERIFY_OFFSET(disk_blk_cnt, 28);
8818 VERIFY_OFFSET(data_disks_per_row, 36);
8819 VERIFY_OFFSET(metadata_disks_per_row, 38);
8820 VERIFY_OFFSET(row_cnt, 40);
8821 VERIFY_OFFSET(layout_map_count, 42);
8822 VERIFY_OFFSET(flags, 44);
8823 VERIFY_OFFSET(dekindex, 46);
8824 /* VERIFY_OFFSET(reserved, 48 */
8825 VERIFY_OFFSET(data, 64);
8827 #undef VERIFY_OFFSET
8829 #define VERIFY_OFFSET(member, offset) \
8830 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset)
8832 VERIFY_OFFSET(IU_type, 0);
8833 VERIFY_OFFSET(direction, 1);
8834 VERIFY_OFFSET(reply_queue, 2);
8835 /* VERIFY_OFFSET(reserved1, 3); */
8836 VERIFY_OFFSET(scsi_nexus, 4);
8837 VERIFY_OFFSET(Tag, 8);
8838 VERIFY_OFFSET(cdb, 16);
8839 VERIFY_OFFSET(cciss_lun, 32);
8840 VERIFY_OFFSET(data_len, 40);
8841 VERIFY_OFFSET(cmd_priority_task_attr, 44);
8842 VERIFY_OFFSET(sg_count, 45);
8843 /* VERIFY_OFFSET(reserved3 */
8844 VERIFY_OFFSET(err_ptr, 48);
8845 VERIFY_OFFSET(err_len, 56);
8846 /* VERIFY_OFFSET(reserved4 */
8847 VERIFY_OFFSET(sg, 64);
8849 #undef VERIFY_OFFSET
8851 #define VERIFY_OFFSET(member, offset) \
8852 BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset)
8854 VERIFY_OFFSET(dev_handle, 0x00);
8855 VERIFY_OFFSET(reserved1, 0x02);
8856 VERIFY_OFFSET(function, 0x03);
8857 VERIFY_OFFSET(reserved2, 0x04);
8858 VERIFY_OFFSET(err_info, 0x0C);
8859 VERIFY_OFFSET(reserved3, 0x10);
8860 VERIFY_OFFSET(err_info_len, 0x12);
8861 VERIFY_OFFSET(reserved4, 0x13);
8862 VERIFY_OFFSET(sgl_offset, 0x14);
8863 VERIFY_OFFSET(reserved5, 0x15);
8864 VERIFY_OFFSET(transfer_len, 0x1C);
8865 VERIFY_OFFSET(reserved6, 0x20);
8866 VERIFY_OFFSET(io_flags, 0x24);
8867 VERIFY_OFFSET(reserved7, 0x26);
8868 VERIFY_OFFSET(LUN, 0x34);
8869 VERIFY_OFFSET(control, 0x3C);
8870 VERIFY_OFFSET(CDB, 0x40);
8871 VERIFY_OFFSET(reserved8, 0x50);
8872 VERIFY_OFFSET(host_context_flags, 0x60);
8873 VERIFY_OFFSET(timeout_sec, 0x62);
8874 VERIFY_OFFSET(ReplyQueue, 0x64);
8875 VERIFY_OFFSET(reserved9, 0x65);
8876 VERIFY_OFFSET(tag, 0x68);
8877 VERIFY_OFFSET(host_addr, 0x70);
8878 VERIFY_OFFSET(CISS_LUN, 0x78);
8879 VERIFY_OFFSET(SG, 0x78 + 8);
8880 #undef VERIFY_OFFSET
8883 module_init(hpsa_init);
8884 module_exit(hpsa_cleanup);