2 * Disk Array driver for HP Smart Array SAS controllers
3 * Copyright 2000, 2009 Hewlett-Packard Development Company, L.P.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
12 * NON INFRINGEMENT. See the GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
22 #include <linux/module.h>
23 #include <linux/interrupt.h>
24 #include <linux/types.h>
25 #include <linux/pci.h>
26 #include <linux/kernel.h>
27 #include <linux/slab.h>
28 #include <linux/delay.h>
30 #include <linux/timer.h>
31 #include <linux/seq_file.h>
32 #include <linux/init.h>
33 #include <linux/spinlock.h>
34 #include <linux/compat.h>
35 #include <linux/blktrace_api.h>
36 #include <linux/uaccess.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/completion.h>
40 #include <linux/moduleparam.h>
41 #include <scsi/scsi.h>
42 #include <scsi/scsi_cmnd.h>
43 #include <scsi/scsi_device.h>
44 #include <scsi/scsi_host.h>
45 #include <scsi/scsi_tcq.h>
46 #include <linux/cciss_ioctl.h>
47 #include <linux/string.h>
48 #include <linux/bitmap.h>
49 #include <asm/atomic.h>
50 #include <linux/kthread.h>
54 /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */
55 #define HPSA_DRIVER_VERSION "2.0.2-1"
56 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
58 /* How long to wait (in milliseconds) for board to go into simple mode */
59 #define MAX_CONFIG_WAIT 30000
60 #define MAX_IOCTL_CONFIG_WAIT 1000
62 /*define how many times we will try a command because of bus resets */
63 #define MAX_CMD_RETRIES 3
65 /* Embedded module documentation macros - see modules.h */
66 MODULE_AUTHOR("Hewlett-Packard Company");
67 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
69 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
70 MODULE_VERSION(HPSA_DRIVER_VERSION);
71 MODULE_LICENSE("GPL");
73 static int hpsa_allow_any;
74 module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR);
75 MODULE_PARM_DESC(hpsa_allow_any,
76 "Allow hpsa driver to access unknown HP Smart Array hardware");
78 /* define the PCI info for the cards we can control */
79 static const struct pci_device_id hpsa_pci_device_id[] = {
80 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
81 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
82 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
83 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
84 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
85 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324a},
86 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324b},
87 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233},
88 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3250},
89 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3251},
90 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3252},
91 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3253},
92 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3254},
93 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
94 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
98 MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);
100 /* board_id = Subsystem Device ID & Vendor ID
101 * product = Marketing Name for the board
102 * access = Address of the struct of function pointers
104 static struct board_type products[] = {
105 {0x3241103C, "Smart Array P212", &SA5_access},
106 {0x3243103C, "Smart Array P410", &SA5_access},
107 {0x3245103C, "Smart Array P410i", &SA5_access},
108 {0x3247103C, "Smart Array P411", &SA5_access},
109 {0x3249103C, "Smart Array P812", &SA5_access},
110 {0x324a103C, "Smart Array P712m", &SA5_access},
111 {0x324b103C, "Smart Array P711m", &SA5_access},
112 {0x3250103C, "Smart Array", &SA5_access},
113 {0x3250113C, "Smart Array", &SA5_access},
114 {0x3250123C, "Smart Array", &SA5_access},
115 {0x3250133C, "Smart Array", &SA5_access},
116 {0x3250143C, "Smart Array", &SA5_access},
117 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
120 static int number_of_controllers;
122 static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id);
123 static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id);
124 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg);
125 static void start_io(struct ctlr_info *h);
128 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg);
131 static void cmd_free(struct ctlr_info *h, struct CommandList *c);
132 static void cmd_special_free(struct ctlr_info *h, struct CommandList *c);
133 static struct CommandList *cmd_alloc(struct ctlr_info *h);
134 static struct CommandList *cmd_special_alloc(struct ctlr_info *h);
135 static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
136 void *buff, size_t size, u8 page_code, unsigned char *scsi3addr,
139 static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
140 static void hpsa_scan_start(struct Scsi_Host *);
141 static int hpsa_scan_finished(struct Scsi_Host *sh,
142 unsigned long elapsed_time);
143 static int hpsa_change_queue_depth(struct scsi_device *sdev,
144 int qdepth, int reason);
146 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
147 static int hpsa_slave_alloc(struct scsi_device *sdev);
148 static void hpsa_slave_destroy(struct scsi_device *sdev);
150 static ssize_t raid_level_show(struct device *dev,
151 struct device_attribute *attr, char *buf);
152 static ssize_t lunid_show(struct device *dev,
153 struct device_attribute *attr, char *buf);
154 static ssize_t unique_id_show(struct device *dev,
155 struct device_attribute *attr, char *buf);
156 static ssize_t host_show_firmware_revision(struct device *dev,
157 struct device_attribute *attr, char *buf);
158 static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno);
159 static ssize_t host_store_rescan(struct device *dev,
160 struct device_attribute *attr, const char *buf, size_t count);
161 static int check_for_unit_attention(struct ctlr_info *h,
162 struct CommandList *c);
163 static void check_ioctl_unit_attention(struct ctlr_info *h,
164 struct CommandList *c);
165 /* performant mode helper functions */
166 static void calc_bucket_map(int *bucket, int num_buckets,
167 int nsgs, int *bucket_map);
168 static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
169 static inline u32 next_command(struct ctlr_info *h);
170 static int __devinit hpsa_find_cfg_addrs(struct pci_dev *pdev,
171 void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index,
173 static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
174 unsigned long *memory_bar);
175 static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id);
177 static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
178 static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
179 static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
180 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
181 static DEVICE_ATTR(firmware_revision, S_IRUGO,
182 host_show_firmware_revision, NULL);
184 static struct device_attribute *hpsa_sdev_attrs[] = {
185 &dev_attr_raid_level,
191 static struct device_attribute *hpsa_shost_attrs[] = {
193 &dev_attr_firmware_revision,
197 static struct scsi_host_template hpsa_driver_template = {
198 .module = THIS_MODULE,
201 .queuecommand = hpsa_scsi_queue_command,
202 .scan_start = hpsa_scan_start,
203 .scan_finished = hpsa_scan_finished,
204 .change_queue_depth = hpsa_change_queue_depth,
206 .use_clustering = ENABLE_CLUSTERING,
207 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
209 .slave_alloc = hpsa_slave_alloc,
210 .slave_destroy = hpsa_slave_destroy,
212 .compat_ioctl = hpsa_compat_ioctl,
214 .sdev_attrs = hpsa_sdev_attrs,
215 .shost_attrs = hpsa_shost_attrs,
218 static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
220 unsigned long *priv = shost_priv(sdev->host);
221 return (struct ctlr_info *) *priv;
224 static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
226 unsigned long *priv = shost_priv(sh);
227 return (struct ctlr_info *) *priv;
230 static int check_for_unit_attention(struct ctlr_info *h,
231 struct CommandList *c)
233 if (c->err_info->SenseInfo[2] != UNIT_ATTENTION)
236 switch (c->err_info->SenseInfo[12]) {
238 dev_warn(&h->pdev->dev, "hpsa%d: a state change "
239 "detected, command retried\n", h->ctlr);
242 dev_warn(&h->pdev->dev, "hpsa%d: LUN failure "
243 "detected, action required\n", h->ctlr);
245 case REPORT_LUNS_CHANGED:
246 dev_warn(&h->pdev->dev, "hpsa%d: report LUN data "
247 "changed, action required\n", h->ctlr);
249 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
253 dev_warn(&h->pdev->dev, "hpsa%d: a power on "
254 "or device reset detected\n", h->ctlr);
256 case UNIT_ATTENTION_CLEARED:
257 dev_warn(&h->pdev->dev, "hpsa%d: unit attention "
258 "cleared by another initiator\n", h->ctlr);
261 dev_warn(&h->pdev->dev, "hpsa%d: unknown "
262 "unit attention detected\n", h->ctlr);
268 static ssize_t host_store_rescan(struct device *dev,
269 struct device_attribute *attr,
270 const char *buf, size_t count)
273 struct Scsi_Host *shost = class_to_shost(dev);
274 h = shost_to_hba(shost);
275 hpsa_scan_start(h->scsi_host);
279 static ssize_t host_show_firmware_revision(struct device *dev,
280 struct device_attribute *attr, char *buf)
283 struct Scsi_Host *shost = class_to_shost(dev);
284 unsigned char *fwrev;
286 h = shost_to_hba(shost);
287 if (!h->hba_inquiry_data)
289 fwrev = &h->hba_inquiry_data[32];
290 return snprintf(buf, 20, "%c%c%c%c\n",
291 fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
294 /* Enqueuing and dequeuing functions for cmdlists. */
295 static inline void addQ(struct hlist_head *list, struct CommandList *c)
297 hlist_add_head(&c->list, list);
300 static inline u32 next_command(struct ctlr_info *h)
304 if (unlikely(h->transMethod != CFGTBL_Trans_Performant))
305 return h->access.command_completed(h);
307 if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) {
308 a = *(h->reply_pool_head); /* Next cmd in ring buffer */
309 (h->reply_pool_head)++;
310 h->commands_outstanding--;
314 /* Check for wraparound */
315 if (h->reply_pool_head == (h->reply_pool + h->max_commands)) {
316 h->reply_pool_head = h->reply_pool;
317 h->reply_pool_wraparound ^= 1;
322 /* set_performant_mode: Modify the tag for cciss performant
323 * set bit 0 for pull model, bits 3-1 for block fetch
326 static void set_performant_mode(struct ctlr_info *h, struct CommandList *c)
328 if (likely(h->transMethod == CFGTBL_Trans_Performant))
329 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
332 static void enqueue_cmd_and_start_io(struct ctlr_info *h,
333 struct CommandList *c)
337 set_performant_mode(h, c);
338 spin_lock_irqsave(&h->lock, flags);
342 spin_unlock_irqrestore(&h->lock, flags);
345 static inline void removeQ(struct CommandList *c)
347 if (WARN_ON(hlist_unhashed(&c->list)))
349 hlist_del_init(&c->list);
352 static inline int is_hba_lunid(unsigned char scsi3addr[])
354 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
357 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
359 return (scsi3addr[3] & 0xC0) == 0x40;
362 static inline int is_scsi_rev_5(struct ctlr_info *h)
364 if (!h->hba_inquiry_data)
366 if ((h->hba_inquiry_data[2] & 0x07) == 5)
371 static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
374 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
376 static ssize_t raid_level_show(struct device *dev,
377 struct device_attribute *attr, char *buf)
380 unsigned char rlevel;
382 struct scsi_device *sdev;
383 struct hpsa_scsi_dev_t *hdev;
386 sdev = to_scsi_device(dev);
387 h = sdev_to_hba(sdev);
388 spin_lock_irqsave(&h->lock, flags);
389 hdev = sdev->hostdata;
391 spin_unlock_irqrestore(&h->lock, flags);
395 /* Is this even a logical drive? */
396 if (!is_logical_dev_addr_mode(hdev->scsi3addr)) {
397 spin_unlock_irqrestore(&h->lock, flags);
398 l = snprintf(buf, PAGE_SIZE, "N/A\n");
402 rlevel = hdev->raid_level;
403 spin_unlock_irqrestore(&h->lock, flags);
404 if (rlevel > RAID_UNKNOWN)
405 rlevel = RAID_UNKNOWN;
406 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
410 static ssize_t lunid_show(struct device *dev,
411 struct device_attribute *attr, char *buf)
414 struct scsi_device *sdev;
415 struct hpsa_scsi_dev_t *hdev;
417 unsigned char lunid[8];
419 sdev = to_scsi_device(dev);
420 h = sdev_to_hba(sdev);
421 spin_lock_irqsave(&h->lock, flags);
422 hdev = sdev->hostdata;
424 spin_unlock_irqrestore(&h->lock, flags);
427 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
428 spin_unlock_irqrestore(&h->lock, flags);
429 return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
430 lunid[0], lunid[1], lunid[2], lunid[3],
431 lunid[4], lunid[5], lunid[6], lunid[7]);
434 static ssize_t unique_id_show(struct device *dev,
435 struct device_attribute *attr, char *buf)
438 struct scsi_device *sdev;
439 struct hpsa_scsi_dev_t *hdev;
441 unsigned char sn[16];
443 sdev = to_scsi_device(dev);
444 h = sdev_to_hba(sdev);
445 spin_lock_irqsave(&h->lock, flags);
446 hdev = sdev->hostdata;
448 spin_unlock_irqrestore(&h->lock, flags);
451 memcpy(sn, hdev->device_id, sizeof(sn));
452 spin_unlock_irqrestore(&h->lock, flags);
453 return snprintf(buf, 16 * 2 + 2,
454 "%02X%02X%02X%02X%02X%02X%02X%02X"
455 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
456 sn[0], sn[1], sn[2], sn[3],
457 sn[4], sn[5], sn[6], sn[7],
458 sn[8], sn[9], sn[10], sn[11],
459 sn[12], sn[13], sn[14], sn[15]);
462 static int hpsa_find_target_lun(struct ctlr_info *h,
463 unsigned char scsi3addr[], int bus, int *target, int *lun)
465 /* finds an unused bus, target, lun for a new physical device
466 * assumes h->devlock is held
469 DECLARE_BITMAP(lun_taken, HPSA_MAX_SCSI_DEVS_PER_HBA);
471 memset(&lun_taken[0], 0, HPSA_MAX_SCSI_DEVS_PER_HBA >> 3);
473 for (i = 0; i < h->ndevices; i++) {
474 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
475 set_bit(h->dev[i]->target, lun_taken);
478 for (i = 0; i < HPSA_MAX_SCSI_DEVS_PER_HBA; i++) {
479 if (!test_bit(i, lun_taken)) {
490 /* Add an entry into h->dev[] array. */
491 static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno,
492 struct hpsa_scsi_dev_t *device,
493 struct hpsa_scsi_dev_t *added[], int *nadded)
495 /* assumes h->devlock is held */
498 unsigned char addr1[8], addr2[8];
499 struct hpsa_scsi_dev_t *sd;
501 if (n >= HPSA_MAX_SCSI_DEVS_PER_HBA) {
502 dev_err(&h->pdev->dev, "too many devices, some will be "
507 /* physical devices do not have lun or target assigned until now. */
508 if (device->lun != -1)
509 /* Logical device, lun is already assigned. */
512 /* If this device a non-zero lun of a multi-lun device
513 * byte 4 of the 8-byte LUN addr will contain the logical
514 * unit no, zero otherise.
516 if (device->scsi3addr[4] == 0) {
517 /* This is not a non-zero lun of a multi-lun device */
518 if (hpsa_find_target_lun(h, device->scsi3addr,
519 device->bus, &device->target, &device->lun) != 0)
524 /* This is a non-zero lun of a multi-lun device.
525 * Search through our list and find the device which
526 * has the same 8 byte LUN address, excepting byte 4.
527 * Assign the same bus and target for this new LUN.
528 * Use the logical unit number from the firmware.
530 memcpy(addr1, device->scsi3addr, 8);
532 for (i = 0; i < n; i++) {
534 memcpy(addr2, sd->scsi3addr, 8);
536 /* differ only in byte 4? */
537 if (memcmp(addr1, addr2, 8) == 0) {
538 device->bus = sd->bus;
539 device->target = sd->target;
540 device->lun = device->scsi3addr[4];
544 if (device->lun == -1) {
545 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
546 " suspect firmware bug or unsupported hardware "
555 added[*nadded] = device;
558 /* initially, (before registering with scsi layer) we don't
559 * know our hostno and we don't want to print anything first
560 * time anyway (the scsi layer's inquiries will show that info)
562 /* if (hostno != -1) */
563 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n",
564 scsi_device_type(device->devtype), hostno,
565 device->bus, device->target, device->lun);
569 /* Replace an entry from h->dev[] array. */
570 static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno,
571 int entry, struct hpsa_scsi_dev_t *new_entry,
572 struct hpsa_scsi_dev_t *added[], int *nadded,
573 struct hpsa_scsi_dev_t *removed[], int *nremoved)
575 /* assumes h->devlock is held */
576 BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA);
577 removed[*nremoved] = h->dev[entry];
579 h->dev[entry] = new_entry;
580 added[*nadded] = new_entry;
582 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d changed.\n",
583 scsi_device_type(new_entry->devtype), hostno, new_entry->bus,
584 new_entry->target, new_entry->lun);
587 /* Remove an entry from h->dev[] array. */
588 static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry,
589 struct hpsa_scsi_dev_t *removed[], int *nremoved)
591 /* assumes h->devlock is held */
593 struct hpsa_scsi_dev_t *sd;
595 BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA);
598 removed[*nremoved] = h->dev[entry];
601 for (i = entry; i < h->ndevices-1; i++)
602 h->dev[i] = h->dev[i+1];
604 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n",
605 scsi_device_type(sd->devtype), hostno, sd->bus, sd->target,
609 #define SCSI3ADDR_EQ(a, b) ( \
610 (a)[7] == (b)[7] && \
611 (a)[6] == (b)[6] && \
612 (a)[5] == (b)[5] && \
613 (a)[4] == (b)[4] && \
614 (a)[3] == (b)[3] && \
615 (a)[2] == (b)[2] && \
616 (a)[1] == (b)[1] && \
619 static void fixup_botched_add(struct ctlr_info *h,
620 struct hpsa_scsi_dev_t *added)
622 /* called when scsi_add_device fails in order to re-adjust
623 * h->dev[] to match the mid layer's view.
628 spin_lock_irqsave(&h->lock, flags);
629 for (i = 0; i < h->ndevices; i++) {
630 if (h->dev[i] == added) {
631 for (j = i; j < h->ndevices-1; j++)
632 h->dev[j] = h->dev[j+1];
637 spin_unlock_irqrestore(&h->lock, flags);
641 static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
642 struct hpsa_scsi_dev_t *dev2)
644 /* we compare everything except lun and target as these
645 * are not yet assigned. Compare parts likely
648 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
649 sizeof(dev1->scsi3addr)) != 0)
651 if (memcmp(dev1->device_id, dev2->device_id,
652 sizeof(dev1->device_id)) != 0)
654 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
656 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
658 if (dev1->devtype != dev2->devtype)
660 if (dev1->raid_level != dev2->raid_level)
662 if (dev1->bus != dev2->bus)
667 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
668 * and return needle location in *index. If scsi3addr matches, but not
669 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
670 * location in *index. If needle not found, return DEVICE_NOT_FOUND.
672 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
673 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
677 #define DEVICE_NOT_FOUND 0
678 #define DEVICE_CHANGED 1
679 #define DEVICE_SAME 2
680 for (i = 0; i < haystack_size; i++) {
681 if (haystack[i] == NULL) /* previously removed. */
683 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
685 if (device_is_the_same(needle, haystack[i]))
688 return DEVICE_CHANGED;
692 return DEVICE_NOT_FOUND;
695 static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno,
696 struct hpsa_scsi_dev_t *sd[], int nsds)
698 /* sd contains scsi3 addresses and devtypes, and inquiry
699 * data. This function takes what's in sd to be the current
700 * reality and updates h->dev[] to reflect that reality.
702 int i, entry, device_change, changes = 0;
703 struct hpsa_scsi_dev_t *csd;
705 struct hpsa_scsi_dev_t **added, **removed;
706 int nadded, nremoved;
707 struct Scsi_Host *sh = NULL;
709 added = kzalloc(sizeof(*added) * HPSA_MAX_SCSI_DEVS_PER_HBA,
711 removed = kzalloc(sizeof(*removed) * HPSA_MAX_SCSI_DEVS_PER_HBA,
714 if (!added || !removed) {
715 dev_warn(&h->pdev->dev, "out of memory in "
716 "adjust_hpsa_scsi_table\n");
720 spin_lock_irqsave(&h->devlock, flags);
722 /* find any devices in h->dev[] that are not in
723 * sd[] and remove them from h->dev[], and for any
724 * devices which have changed, remove the old device
725 * info and add the new device info.
730 while (i < h->ndevices) {
732 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
733 if (device_change == DEVICE_NOT_FOUND) {
735 hpsa_scsi_remove_entry(h, hostno, i,
737 continue; /* remove ^^^, hence i not incremented */
738 } else if (device_change == DEVICE_CHANGED) {
740 hpsa_scsi_replace_entry(h, hostno, i, sd[entry],
741 added, &nadded, removed, &nremoved);
742 /* Set it to NULL to prevent it from being freed
743 * at the bottom of hpsa_update_scsi_devices()
750 /* Now, make sure every device listed in sd[] is also
751 * listed in h->dev[], adding them if they aren't found
754 for (i = 0; i < nsds; i++) {
755 if (!sd[i]) /* if already added above. */
757 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
758 h->ndevices, &entry);
759 if (device_change == DEVICE_NOT_FOUND) {
761 if (hpsa_scsi_add_entry(h, hostno, sd[i],
762 added, &nadded) != 0)
764 sd[i] = NULL; /* prevent from being freed later. */
765 } else if (device_change == DEVICE_CHANGED) {
766 /* should never happen... */
768 dev_warn(&h->pdev->dev,
769 "device unexpectedly changed.\n");
770 /* but if it does happen, we just ignore that device */
773 spin_unlock_irqrestore(&h->devlock, flags);
775 /* Don't notify scsi mid layer of any changes the first time through
776 * (or if there are no changes) scsi_scan_host will do it later the
777 * first time through.
779 if (hostno == -1 || !changes)
783 /* Notify scsi mid layer of any removed devices */
784 for (i = 0; i < nremoved; i++) {
785 struct scsi_device *sdev =
786 scsi_device_lookup(sh, removed[i]->bus,
787 removed[i]->target, removed[i]->lun);
789 scsi_remove_device(sdev);
790 scsi_device_put(sdev);
792 /* We don't expect to get here.
793 * future cmds to this device will get selection
794 * timeout as if the device was gone.
796 dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d "
797 " for removal.", hostno, removed[i]->bus,
798 removed[i]->target, removed[i]->lun);
804 /* Notify scsi mid layer of any added devices */
805 for (i = 0; i < nadded; i++) {
806 if (scsi_add_device(sh, added[i]->bus,
807 added[i]->target, added[i]->lun) == 0)
809 dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, "
810 "device not added.\n", hostno, added[i]->bus,
811 added[i]->target, added[i]->lun);
812 /* now we have to remove it from h->dev,
813 * since it didn't get added to scsi mid layer
815 fixup_botched_add(h, added[i]);
824 * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t *
825 * Assume's h->devlock is held.
827 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
828 int bus, int target, int lun)
831 struct hpsa_scsi_dev_t *sd;
833 for (i = 0; i < h->ndevices; i++) {
835 if (sd->bus == bus && sd->target == target && sd->lun == lun)
841 /* link sdev->hostdata to our per-device structure. */
842 static int hpsa_slave_alloc(struct scsi_device *sdev)
844 struct hpsa_scsi_dev_t *sd;
848 h = sdev_to_hba(sdev);
849 spin_lock_irqsave(&h->devlock, flags);
850 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
851 sdev_id(sdev), sdev->lun);
854 spin_unlock_irqrestore(&h->devlock, flags);
858 static void hpsa_slave_destroy(struct scsi_device *sdev)
863 static void hpsa_scsi_setup(struct ctlr_info *h)
867 spin_lock_init(&h->devlock);
870 static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
876 for (i = 0; i < h->nr_cmds; i++) {
877 kfree(h->cmd_sg_list[i]);
878 h->cmd_sg_list[i] = NULL;
880 kfree(h->cmd_sg_list);
881 h->cmd_sg_list = NULL;
884 static int hpsa_allocate_sg_chain_blocks(struct ctlr_info *h)
888 if (h->chainsize <= 0)
891 h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds,
895 for (i = 0; i < h->nr_cmds; i++) {
896 h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) *
897 h->chainsize, GFP_KERNEL);
898 if (!h->cmd_sg_list[i])
904 hpsa_free_sg_chain_blocks(h);
908 static void hpsa_map_sg_chain_block(struct ctlr_info *h,
909 struct CommandList *c)
911 struct SGDescriptor *chain_sg, *chain_block;
914 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
915 chain_block = h->cmd_sg_list[c->cmdindex];
916 chain_sg->Ext = HPSA_SG_CHAIN;
917 chain_sg->Len = sizeof(*chain_sg) *
918 (c->Header.SGTotal - h->max_cmd_sg_entries);
919 temp64 = pci_map_single(h->pdev, chain_block, chain_sg->Len,
921 chain_sg->Addr.lower = (u32) (temp64 & 0x0FFFFFFFFULL);
922 chain_sg->Addr.upper = (u32) ((temp64 >> 32) & 0x0FFFFFFFFULL);
925 static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
926 struct CommandList *c)
928 struct SGDescriptor *chain_sg;
931 if (c->Header.SGTotal <= h->max_cmd_sg_entries)
934 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
935 temp64.val32.lower = chain_sg->Addr.lower;
936 temp64.val32.upper = chain_sg->Addr.upper;
937 pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE);
940 static void complete_scsi_command(struct CommandList *cp,
941 int timeout, u32 tag)
943 struct scsi_cmnd *cmd;
945 struct ErrorInfo *ei;
947 unsigned char sense_key;
948 unsigned char asc; /* additional sense code */
949 unsigned char ascq; /* additional sense code qualifier */
952 cmd = (struct scsi_cmnd *) cp->scsi_cmd;
955 scsi_dma_unmap(cmd); /* undo the DMA mappings */
956 if (cp->Header.SGTotal > h->max_cmd_sg_entries)
957 hpsa_unmap_sg_chain_block(h, cp);
959 cmd->result = (DID_OK << 16); /* host byte */
960 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
961 cmd->result |= ei->ScsiStatus;
963 /* copy the sense data whether we need to or not. */
964 memcpy(cmd->sense_buffer, ei->SenseInfo,
965 ei->SenseLen > SCSI_SENSE_BUFFERSIZE ?
966 SCSI_SENSE_BUFFERSIZE :
968 scsi_set_resid(cmd, ei->ResidualCnt);
970 if (ei->CommandStatus == 0) {
976 /* an error has occurred */
977 switch (ei->CommandStatus) {
979 case CMD_TARGET_STATUS:
980 if (ei->ScsiStatus) {
982 sense_key = 0xf & ei->SenseInfo[2];
983 /* Get additional sense code */
984 asc = ei->SenseInfo[12];
985 /* Get addition sense code qualifier */
986 ascq = ei->SenseInfo[13];
989 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
990 if (check_for_unit_attention(h, cp)) {
991 cmd->result = DID_SOFT_ERROR << 16;
994 if (sense_key == ILLEGAL_REQUEST) {
996 * SCSI REPORT_LUNS is commonly unsupported on
997 * Smart Array. Suppress noisy complaint.
999 if (cp->Request.CDB[0] == REPORT_LUNS)
1002 /* If ASC/ASCQ indicate Logical Unit
1003 * Not Supported condition,
1005 if ((asc == 0x25) && (ascq == 0x0)) {
1006 dev_warn(&h->pdev->dev, "cp %p "
1007 "has check condition\n", cp);
1012 if (sense_key == NOT_READY) {
1013 /* If Sense is Not Ready, Logical Unit
1014 * Not ready, Manual Intervention
1017 if ((asc == 0x04) && (ascq == 0x03)) {
1018 dev_warn(&h->pdev->dev, "cp %p "
1019 "has check condition: unit "
1020 "not ready, manual "
1021 "intervention required\n", cp);
1025 if (sense_key == ABORTED_COMMAND) {
1026 /* Aborted command is retryable */
1027 dev_warn(&h->pdev->dev, "cp %p "
1028 "has check condition: aborted command: "
1029 "ASC: 0x%x, ASCQ: 0x%x\n",
1031 cmd->result = DID_SOFT_ERROR << 16;
1034 /* Must be some other type of check condition */
1035 dev_warn(&h->pdev->dev, "cp %p has check condition: "
1037 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1038 "Returning result: 0x%x, "
1039 "cmd=[%02x %02x %02x %02x %02x "
1040 "%02x %02x %02x %02x %02x %02x "
1041 "%02x %02x %02x %02x %02x]\n",
1042 cp, sense_key, asc, ascq,
1044 cmd->cmnd[0], cmd->cmnd[1],
1045 cmd->cmnd[2], cmd->cmnd[3],
1046 cmd->cmnd[4], cmd->cmnd[5],
1047 cmd->cmnd[6], cmd->cmnd[7],
1048 cmd->cmnd[8], cmd->cmnd[9],
1049 cmd->cmnd[10], cmd->cmnd[11],
1050 cmd->cmnd[12], cmd->cmnd[13],
1051 cmd->cmnd[14], cmd->cmnd[15]);
1056 /* Problem was not a check condition
1057 * Pass it up to the upper layers...
1059 if (ei->ScsiStatus) {
1060 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
1061 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1062 "Returning result: 0x%x\n",
1064 sense_key, asc, ascq,
1066 } else { /* scsi status is zero??? How??? */
1067 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
1068 "Returning no connection.\n", cp),
1070 /* Ordinarily, this case should never happen,
1071 * but there is a bug in some released firmware
1072 * revisions that allows it to happen if, for
1073 * example, a 4100 backplane loses power and
1074 * the tape drive is in it. We assume that
1075 * it's a fatal error of some kind because we
1076 * can't show that it wasn't. We will make it
1077 * look like selection timeout since that is
1078 * the most common reason for this to occur,
1079 * and it's severe enough.
1082 cmd->result = DID_NO_CONNECT << 16;
1086 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
1088 case CMD_DATA_OVERRUN:
1089 dev_warn(&h->pdev->dev, "cp %p has"
1090 " completed with data overrun "
1094 /* print_bytes(cp, sizeof(*cp), 1, 0);
1096 /* We get CMD_INVALID if you address a non-existent device
1097 * instead of a selection timeout (no response). You will
1098 * see this if you yank out a drive, then try to access it.
1099 * This is kind of a shame because it means that any other
1100 * CMD_INVALID (e.g. driver bug) will get interpreted as a
1101 * missing target. */
1102 cmd->result = DID_NO_CONNECT << 16;
1105 case CMD_PROTOCOL_ERR:
1106 dev_warn(&h->pdev->dev, "cp %p has "
1107 "protocol error \n", cp);
1109 case CMD_HARDWARE_ERR:
1110 cmd->result = DID_ERROR << 16;
1111 dev_warn(&h->pdev->dev, "cp %p had hardware error\n", cp);
1113 case CMD_CONNECTION_LOST:
1114 cmd->result = DID_ERROR << 16;
1115 dev_warn(&h->pdev->dev, "cp %p had connection lost\n", cp);
1118 cmd->result = DID_ABORT << 16;
1119 dev_warn(&h->pdev->dev, "cp %p was aborted with status 0x%x\n",
1120 cp, ei->ScsiStatus);
1122 case CMD_ABORT_FAILED:
1123 cmd->result = DID_ERROR << 16;
1124 dev_warn(&h->pdev->dev, "cp %p reports abort failed\n", cp);
1126 case CMD_UNSOLICITED_ABORT:
1127 cmd->result = DID_RESET << 16;
1128 dev_warn(&h->pdev->dev, "cp %p aborted do to an unsolicited "
1132 cmd->result = DID_TIME_OUT << 16;
1133 dev_warn(&h->pdev->dev, "cp %p timedout\n", cp);
1136 cmd->result = DID_ERROR << 16;
1137 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
1138 cp, ei->CommandStatus);
1140 cmd->scsi_done(cmd);
1144 static int hpsa_scsi_detect(struct ctlr_info *h)
1146 struct Scsi_Host *sh;
1149 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
1156 sh->max_channel = 3;
1157 sh->max_cmd_len = MAX_COMMAND_SIZE;
1158 sh->max_lun = HPSA_MAX_LUN;
1159 sh->max_id = HPSA_MAX_LUN;
1160 sh->can_queue = h->nr_cmds;
1161 sh->cmd_per_lun = h->nr_cmds;
1162 sh->sg_tablesize = h->maxsgentries;
1164 sh->hostdata[0] = (unsigned long) h;
1165 sh->irq = h->intr[PERF_MODE_INT];
1166 sh->unique_id = sh->irq;
1167 error = scsi_add_host(sh, &h->pdev->dev);
1174 dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_add_host"
1175 " failed for controller %d\n", h->ctlr);
1179 dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_host_alloc"
1180 " failed for controller %d\n", h->ctlr);
1184 static void hpsa_pci_unmap(struct pci_dev *pdev,
1185 struct CommandList *c, int sg_used, int data_direction)
1188 union u64bit addr64;
1190 for (i = 0; i < sg_used; i++) {
1191 addr64.val32.lower = c->SG[i].Addr.lower;
1192 addr64.val32.upper = c->SG[i].Addr.upper;
1193 pci_unmap_single(pdev, (dma_addr_t) addr64.val, c->SG[i].Len,
1198 static void hpsa_map_one(struct pci_dev *pdev,
1199 struct CommandList *cp,
1206 if (buflen == 0 || data_direction == PCI_DMA_NONE) {
1207 cp->Header.SGList = 0;
1208 cp->Header.SGTotal = 0;
1212 addr64 = (u64) pci_map_single(pdev, buf, buflen, data_direction);
1213 cp->SG[0].Addr.lower =
1214 (u32) (addr64 & (u64) 0x00000000FFFFFFFF);
1215 cp->SG[0].Addr.upper =
1216 (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF);
1217 cp->SG[0].Len = buflen;
1218 cp->Header.SGList = (u8) 1; /* no. SGs contig in this cmd */
1219 cp->Header.SGTotal = (u16) 1; /* total sgs in this cmd list */
1222 static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
1223 struct CommandList *c)
1225 DECLARE_COMPLETION_ONSTACK(wait);
1228 enqueue_cmd_and_start_io(h, c);
1229 wait_for_completion(&wait);
1232 static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
1233 struct CommandList *c, int data_direction)
1235 int retry_count = 0;
1238 memset(c->err_info, 0, sizeof(c->err_info));
1239 hpsa_scsi_do_simple_cmd_core(h, c);
1241 } while (check_for_unit_attention(h, c) && retry_count <= 3);
1242 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
1245 static void hpsa_scsi_interpret_error(struct CommandList *cp)
1247 struct ErrorInfo *ei;
1248 struct device *d = &cp->h->pdev->dev;
1251 switch (ei->CommandStatus) {
1252 case CMD_TARGET_STATUS:
1253 dev_warn(d, "cmd %p has completed with errors\n", cp);
1254 dev_warn(d, "cmd %p has SCSI Status = %x\n", cp,
1256 if (ei->ScsiStatus == 0)
1257 dev_warn(d, "SCSI status is abnormally zero. "
1258 "(probably indicates selection timeout "
1259 "reported incorrectly due to a known "
1260 "firmware bug, circa July, 2001.)\n");
1262 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
1263 dev_info(d, "UNDERRUN\n");
1265 case CMD_DATA_OVERRUN:
1266 dev_warn(d, "cp %p has completed with data overrun\n", cp);
1269 /* controller unfortunately reports SCSI passthru's
1270 * to non-existent targets as invalid commands.
1272 dev_warn(d, "cp %p is reported invalid (probably means "
1273 "target device no longer present)\n", cp);
1274 /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0);
1278 case CMD_PROTOCOL_ERR:
1279 dev_warn(d, "cp %p has protocol error \n", cp);
1281 case CMD_HARDWARE_ERR:
1282 /* cmd->result = DID_ERROR << 16; */
1283 dev_warn(d, "cp %p had hardware error\n", cp);
1285 case CMD_CONNECTION_LOST:
1286 dev_warn(d, "cp %p had connection lost\n", cp);
1289 dev_warn(d, "cp %p was aborted\n", cp);
1291 case CMD_ABORT_FAILED:
1292 dev_warn(d, "cp %p reports abort failed\n", cp);
1294 case CMD_UNSOLICITED_ABORT:
1295 dev_warn(d, "cp %p aborted due to an unsolicited abort\n", cp);
1298 dev_warn(d, "cp %p timed out\n", cp);
1301 dev_warn(d, "cp %p returned unknown status %x\n", cp,
1306 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
1307 unsigned char page, unsigned char *buf,
1308 unsigned char bufsize)
1311 struct CommandList *c;
1312 struct ErrorInfo *ei;
1314 c = cmd_special_alloc(h);
1316 if (c == NULL) { /* trouble... */
1317 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
1321 fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD);
1322 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
1324 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
1325 hpsa_scsi_interpret_error(c);
1328 cmd_special_free(h, c);
1332 static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr)
1335 struct CommandList *c;
1336 struct ErrorInfo *ei;
1338 c = cmd_special_alloc(h);
1340 if (c == NULL) { /* trouble... */
1341 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
1345 fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, scsi3addr, TYPE_MSG);
1346 hpsa_scsi_do_simple_cmd_core(h, c);
1347 /* no unmap needed here because no data xfer. */
1350 if (ei->CommandStatus != 0) {
1351 hpsa_scsi_interpret_error(c);
1354 cmd_special_free(h, c);
1358 static void hpsa_get_raid_level(struct ctlr_info *h,
1359 unsigned char *scsi3addr, unsigned char *raid_level)
1364 *raid_level = RAID_UNKNOWN;
1365 buf = kzalloc(64, GFP_KERNEL);
1368 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0xC1, buf, 64);
1370 *raid_level = buf[8];
1371 if (*raid_level > RAID_UNKNOWN)
1372 *raid_level = RAID_UNKNOWN;
1377 /* Get the device id from inquiry page 0x83 */
1378 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
1379 unsigned char *device_id, int buflen)
1386 buf = kzalloc(64, GFP_KERNEL);
1389 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64);
1391 memcpy(device_id, &buf[8], buflen);
1396 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
1397 struct ReportLUNdata *buf, int bufsize,
1398 int extended_response)
1401 struct CommandList *c;
1402 unsigned char scsi3addr[8];
1403 struct ErrorInfo *ei;
1405 c = cmd_special_alloc(h);
1406 if (c == NULL) { /* trouble... */
1407 dev_err(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
1410 /* address the controller */
1411 memset(scsi3addr, 0, sizeof(scsi3addr));
1412 fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
1413 buf, bufsize, 0, scsi3addr, TYPE_CMD);
1414 if (extended_response)
1415 c->Request.CDB[1] = extended_response;
1416 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
1418 if (ei->CommandStatus != 0 &&
1419 ei->CommandStatus != CMD_DATA_UNDERRUN) {
1420 hpsa_scsi_interpret_error(c);
1423 cmd_special_free(h, c);
1427 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
1428 struct ReportLUNdata *buf,
1429 int bufsize, int extended_response)
1431 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, extended_response);
1434 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
1435 struct ReportLUNdata *buf, int bufsize)
1437 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
1440 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
1441 int bus, int target, int lun)
1444 device->target = target;
1448 static int hpsa_update_device_info(struct ctlr_info *h,
1449 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device)
1451 #define OBDR_TAPE_INQ_SIZE 49
1452 unsigned char *inq_buff;
1454 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
1458 /* Do an inquiry to the device to see what it is. */
1459 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
1460 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
1461 /* Inquiry failed (msg printed already) */
1462 dev_err(&h->pdev->dev,
1463 "hpsa_update_device_info: inquiry failed\n");
1467 this_device->devtype = (inq_buff[0] & 0x1f);
1468 memcpy(this_device->scsi3addr, scsi3addr, 8);
1469 memcpy(this_device->vendor, &inq_buff[8],
1470 sizeof(this_device->vendor));
1471 memcpy(this_device->model, &inq_buff[16],
1472 sizeof(this_device->model));
1473 memset(this_device->device_id, 0,
1474 sizeof(this_device->device_id));
1475 hpsa_get_device_id(h, scsi3addr, this_device->device_id,
1476 sizeof(this_device->device_id));
1478 if (this_device->devtype == TYPE_DISK &&
1479 is_logical_dev_addr_mode(scsi3addr))
1480 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
1482 this_device->raid_level = RAID_UNKNOWN;
1492 static unsigned char *msa2xxx_model[] = {
1500 static int is_msa2xxx(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
1504 for (i = 0; msa2xxx_model[i]; i++)
1505 if (strncmp(device->model, msa2xxx_model[i],
1506 strlen(msa2xxx_model[i])) == 0)
1511 /* Helper function to assign bus, target, lun mapping of devices.
1512 * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical
1513 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
1514 * Logical drive target and lun are assigned at this time, but
1515 * physical device lun and target assignment are deferred (assigned
1516 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
1518 static void figure_bus_target_lun(struct ctlr_info *h,
1519 u8 *lunaddrbytes, int *bus, int *target, int *lun,
1520 struct hpsa_scsi_dev_t *device)
1524 if (is_logical_dev_addr_mode(lunaddrbytes)) {
1525 /* logical device */
1526 if (unlikely(is_scsi_rev_5(h))) {
1527 /* p1210m, logical drives lun assignments
1528 * match SCSI REPORT LUNS data.
1530 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
1533 *lun = (lunid & 0x3fff) + 1;
1536 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
1537 if (is_msa2xxx(h, device)) {
1538 /* msa2xxx way, put logicals on bus 1
1539 * and match target/lun numbers box
1543 *target = (lunid >> 16) & 0x3fff;
1544 *lun = lunid & 0x00ff;
1546 /* Traditional smart array way. */
1549 *target = lunid & 0x3fff;
1553 /* physical device */
1554 if (is_hba_lunid(lunaddrbytes))
1555 if (unlikely(is_scsi_rev_5(h))) {
1556 *bus = 0; /* put p1210m ctlr at 0,0,0 */
1561 *bus = 3; /* traditional smartarray */
1563 *bus = 2; /* physical disk */
1565 *lun = -1; /* we will fill these in later. */
1570 * If there is no lun 0 on a target, linux won't find any devices.
1571 * For the MSA2xxx boxes, we have to manually detect the enclosure
1572 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
1573 * it for some reason. *tmpdevice is the target we're adding,
1574 * this_device is a pointer into the current element of currentsd[]
1575 * that we're building up in update_scsi_devices(), below.
1576 * lunzerobits is a bitmap that tracks which targets already have a
1578 * Returns 1 if an enclosure was added, 0 if not.
1580 static int add_msa2xxx_enclosure_device(struct ctlr_info *h,
1581 struct hpsa_scsi_dev_t *tmpdevice,
1582 struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes,
1583 int bus, int target, int lun, unsigned long lunzerobits[],
1584 int *nmsa2xxx_enclosures)
1586 unsigned char scsi3addr[8];
1588 if (test_bit(target, lunzerobits))
1589 return 0; /* There is already a lun 0 on this target. */
1591 if (!is_logical_dev_addr_mode(lunaddrbytes))
1592 return 0; /* It's the logical targets that may lack lun 0. */
1594 if (!is_msa2xxx(h, tmpdevice))
1595 return 0; /* It's only the MSA2xxx that have this problem. */
1597 if (lun == 0) /* if lun is 0, then obviously we have a lun 0. */
1600 if (is_hba_lunid(scsi3addr))
1601 return 0; /* Don't add the RAID controller here. */
1603 if (is_scsi_rev_5(h))
1604 return 0; /* p1210m doesn't need to do this. */
1606 #define MAX_MSA2XXX_ENCLOSURES 32
1607 if (*nmsa2xxx_enclosures >= MAX_MSA2XXX_ENCLOSURES) {
1608 dev_warn(&h->pdev->dev, "Maximum number of MSA2XXX "
1609 "enclosures exceeded. Check your hardware "
1614 memset(scsi3addr, 0, 8);
1615 scsi3addr[3] = target;
1616 if (hpsa_update_device_info(h, scsi3addr, this_device))
1618 (*nmsa2xxx_enclosures)++;
1619 hpsa_set_bus_target_lun(this_device, bus, target, 0);
1620 set_bit(target, lunzerobits);
1625 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
1626 * logdev. The number of luns in physdev and logdev are returned in
1627 * *nphysicals and *nlogicals, respectively.
1628 * Returns 0 on success, -1 otherwise.
1630 static int hpsa_gather_lun_info(struct ctlr_info *h,
1632 struct ReportLUNdata *physdev, u32 *nphysicals,
1633 struct ReportLUNdata *logdev, u32 *nlogicals)
1635 if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, 0)) {
1636 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
1639 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 8;
1640 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
1641 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded."
1642 " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
1643 *nphysicals - HPSA_MAX_PHYS_LUN);
1644 *nphysicals = HPSA_MAX_PHYS_LUN;
1646 if (hpsa_scsi_do_report_log_luns(h, logdev, reportlunsize)) {
1647 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
1650 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
1651 /* Reject Logicals in excess of our max capability. */
1652 if (*nlogicals > HPSA_MAX_LUN) {
1653 dev_warn(&h->pdev->dev,
1654 "maximum logical LUNs (%d) exceeded. "
1655 "%d LUNs ignored.\n", HPSA_MAX_LUN,
1656 *nlogicals - HPSA_MAX_LUN);
1657 *nlogicals = HPSA_MAX_LUN;
1659 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
1660 dev_warn(&h->pdev->dev,
1661 "maximum logical + physical LUNs (%d) exceeded. "
1662 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
1663 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
1664 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
1669 u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, int i,
1670 int nphysicals, int nlogicals, struct ReportLUNdata *physdev_list,
1671 struct ReportLUNdata *logdev_list)
1673 /* Helper function, figure out where the LUN ID info is coming from
1674 * given index i, lists of physical and logical devices, where in
1675 * the list the raid controller is supposed to appear (first or last)
1678 int logicals_start = nphysicals + (raid_ctlr_position == 0);
1679 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);
1681 if (i == raid_ctlr_position)
1682 return RAID_CTLR_LUNID;
1684 if (i < logicals_start)
1685 return &physdev_list->LUN[i - (raid_ctlr_position == 0)][0];
1687 if (i < last_device)
1688 return &logdev_list->LUN[i - nphysicals -
1689 (raid_ctlr_position == 0)][0];
1694 static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
1696 /* the idea here is we could get notified
1697 * that some devices have changed, so we do a report
1698 * physical luns and report logical luns cmd, and adjust
1699 * our list of devices accordingly.
1701 * The scsi3addr's of devices won't change so long as the
1702 * adapter is not reset. That means we can rescan and
1703 * tell which devices we already know about, vs. new
1704 * devices, vs. disappearing devices.
1706 struct ReportLUNdata *physdev_list = NULL;
1707 struct ReportLUNdata *logdev_list = NULL;
1708 unsigned char *inq_buff = NULL;
1711 u32 ndev_allocated = 0;
1712 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
1714 int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8;
1715 int i, nmsa2xxx_enclosures, ndevs_to_allocate;
1716 int bus, target, lun;
1717 int raid_ctlr_position;
1718 DECLARE_BITMAP(lunzerobits, HPSA_MAX_TARGETS_PER_CTLR);
1720 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_SCSI_DEVS_PER_HBA,
1722 physdev_list = kzalloc(reportlunsize, GFP_KERNEL);
1723 logdev_list = kzalloc(reportlunsize, GFP_KERNEL);
1724 inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
1725 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
1727 if (!currentsd || !physdev_list || !logdev_list ||
1728 !inq_buff || !tmpdevice) {
1729 dev_err(&h->pdev->dev, "out of memory\n");
1732 memset(lunzerobits, 0, sizeof(lunzerobits));
1734 if (hpsa_gather_lun_info(h, reportlunsize, physdev_list, &nphysicals,
1735 logdev_list, &nlogicals))
1738 /* We might see up to 32 MSA2xxx enclosures, actually 8 of them
1739 * but each of them 4 times through different paths. The plus 1
1740 * is for the RAID controller.
1742 ndevs_to_allocate = nphysicals + nlogicals + MAX_MSA2XXX_ENCLOSURES + 1;
1744 /* Allocate the per device structures */
1745 for (i = 0; i < ndevs_to_allocate; i++) {
1746 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
1747 if (!currentsd[i]) {
1748 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n",
1749 __FILE__, __LINE__);
1755 if (unlikely(is_scsi_rev_5(h)))
1756 raid_ctlr_position = 0;
1758 raid_ctlr_position = nphysicals + nlogicals;
1760 /* adjust our table of devices */
1761 nmsa2xxx_enclosures = 0;
1762 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
1765 /* Figure out where the LUN ID info is coming from */
1766 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
1767 i, nphysicals, nlogicals, physdev_list, logdev_list);
1768 /* skip masked physical devices. */
1769 if (lunaddrbytes[3] & 0xC0 &&
1770 i < nphysicals + (raid_ctlr_position == 0))
1773 /* Get device type, vendor, model, device id */
1774 if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice))
1775 continue; /* skip it if we can't talk to it. */
1776 figure_bus_target_lun(h, lunaddrbytes, &bus, &target, &lun,
1778 this_device = currentsd[ncurrent];
1781 * For the msa2xxx boxes, we have to insert a LUN 0 which
1782 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
1783 * is nonetheless an enclosure device there. We have to
1784 * present that otherwise linux won't find anything if
1785 * there is no lun 0.
1787 if (add_msa2xxx_enclosure_device(h, tmpdevice, this_device,
1788 lunaddrbytes, bus, target, lun, lunzerobits,
1789 &nmsa2xxx_enclosures)) {
1791 this_device = currentsd[ncurrent];
1794 *this_device = *tmpdevice;
1795 hpsa_set_bus_target_lun(this_device, bus, target, lun);
1797 switch (this_device->devtype) {
1799 /* We don't *really* support actual CD-ROM devices,
1800 * just "One Button Disaster Recovery" tape drive
1801 * which temporarily pretends to be a CD-ROM drive.
1802 * So we check that the device is really an OBDR tape
1803 * device by checking for "$DR-10" in bytes 43-48 of
1807 #define OBDR_TAPE_SIG "$DR-10"
1808 strncpy(obdr_sig, &inq_buff[43], 6);
1810 if (strncmp(obdr_sig, OBDR_TAPE_SIG, 6) != 0)
1811 /* Not OBDR device, ignore it. */
1822 case TYPE_MEDIUM_CHANGER:
1826 /* Only present the Smartarray HBA as a RAID controller.
1827 * If it's a RAID controller other than the HBA itself
1828 * (an external RAID controller, MSA500 or similar)
1831 if (!is_hba_lunid(lunaddrbytes))
1838 if (ncurrent >= HPSA_MAX_SCSI_DEVS_PER_HBA)
1841 adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent);
1844 for (i = 0; i < ndev_allocated; i++)
1845 kfree(currentsd[i]);
1848 kfree(physdev_list);
1852 /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
1853 * dma mapping and fills in the scatter gather entries of the
1856 static int hpsa_scatter_gather(struct ctlr_info *h,
1857 struct CommandList *cp,
1858 struct scsi_cmnd *cmd)
1861 struct scatterlist *sg;
1863 int use_sg, i, sg_index, chained;
1864 struct SGDescriptor *curr_sg;
1866 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
1868 use_sg = scsi_dma_map(cmd);
1873 goto sglist_finished;
1878 scsi_for_each_sg(cmd, sg, use_sg, i) {
1879 if (i == h->max_cmd_sg_entries - 1 &&
1880 use_sg > h->max_cmd_sg_entries) {
1882 curr_sg = h->cmd_sg_list[cp->cmdindex];
1885 addr64 = (u64) sg_dma_address(sg);
1886 len = sg_dma_len(sg);
1887 curr_sg->Addr.lower = (u32) (addr64 & 0x0FFFFFFFFULL);
1888 curr_sg->Addr.upper = (u32) ((addr64 >> 32) & 0x0FFFFFFFFULL);
1890 curr_sg->Ext = 0; /* we are not chaining */
1894 if (use_sg + chained > h->maxSG)
1895 h->maxSG = use_sg + chained;
1898 cp->Header.SGList = h->max_cmd_sg_entries;
1899 cp->Header.SGTotal = (u16) (use_sg + 1);
1900 hpsa_map_sg_chain_block(h, cp);
1906 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */
1907 cp->Header.SGTotal = (u16) use_sg; /* total sgs in this cmd list */
1912 static int hpsa_scsi_queue_command_lck(struct scsi_cmnd *cmd,
1913 void (*done)(struct scsi_cmnd *))
1915 struct ctlr_info *h;
1916 struct hpsa_scsi_dev_t *dev;
1917 unsigned char scsi3addr[8];
1918 struct CommandList *c;
1919 unsigned long flags;
1921 /* Get the ptr to our adapter structure out of cmd->host. */
1922 h = sdev_to_hba(cmd->device);
1923 dev = cmd->device->hostdata;
1925 cmd->result = DID_NO_CONNECT << 16;
1929 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
1931 /* Need a lock as this is being allocated from the pool */
1932 spin_lock_irqsave(&h->lock, flags);
1934 spin_unlock_irqrestore(&h->lock, flags);
1935 if (c == NULL) { /* trouble... */
1936 dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n");
1937 return SCSI_MLQUEUE_HOST_BUSY;
1940 /* Fill in the command list header */
1942 cmd->scsi_done = done; /* save this for use by completion code */
1944 /* save c in case we have to abort it */
1945 cmd->host_scribble = (unsigned char *) c;
1947 c->cmd_type = CMD_SCSI;
1949 c->Header.ReplyQueue = 0; /* unused in simple mode */
1950 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
1951 c->Header.Tag.lower = (c->cmdindex << DIRECT_LOOKUP_SHIFT);
1952 c->Header.Tag.lower |= DIRECT_LOOKUP_BIT;
1954 /* Fill in the request block... */
1956 c->Request.Timeout = 0;
1957 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
1958 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
1959 c->Request.CDBLen = cmd->cmd_len;
1960 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
1961 c->Request.Type.Type = TYPE_CMD;
1962 c->Request.Type.Attribute = ATTR_SIMPLE;
1963 switch (cmd->sc_data_direction) {
1965 c->Request.Type.Direction = XFER_WRITE;
1967 case DMA_FROM_DEVICE:
1968 c->Request.Type.Direction = XFER_READ;
1971 c->Request.Type.Direction = XFER_NONE;
1973 case DMA_BIDIRECTIONAL:
1974 /* This can happen if a buggy application does a scsi passthru
1975 * and sets both inlen and outlen to non-zero. ( see
1976 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
1979 c->Request.Type.Direction = XFER_RSVD;
1980 /* This is technically wrong, and hpsa controllers should
1981 * reject it with CMD_INVALID, which is the most correct
1982 * response, but non-fibre backends appear to let it
1983 * slide by, and give the same results as if this field
1984 * were set correctly. Either way is acceptable for
1985 * our purposes here.
1991 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
1992 cmd->sc_data_direction);
1997 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
1999 return SCSI_MLQUEUE_HOST_BUSY;
2001 enqueue_cmd_and_start_io(h, c);
2002 /* the cmd'll come back via intr handler in complete_scsi_command() */
2006 static DEF_SCSI_QCMD(hpsa_scsi_queue_command)
2008 static void hpsa_scan_start(struct Scsi_Host *sh)
2010 struct ctlr_info *h = shost_to_hba(sh);
2011 unsigned long flags;
2013 /* wait until any scan already in progress is finished. */
2015 spin_lock_irqsave(&h->scan_lock, flags);
2016 if (h->scan_finished)
2018 spin_unlock_irqrestore(&h->scan_lock, flags);
2019 wait_event(h->scan_wait_queue, h->scan_finished);
2020 /* Note: We don't need to worry about a race between this
2021 * thread and driver unload because the midlayer will
2022 * have incremented the reference count, so unload won't
2023 * happen if we're in here.
2026 h->scan_finished = 0; /* mark scan as in progress */
2027 spin_unlock_irqrestore(&h->scan_lock, flags);
2029 hpsa_update_scsi_devices(h, h->scsi_host->host_no);
2031 spin_lock_irqsave(&h->scan_lock, flags);
2032 h->scan_finished = 1; /* mark scan as finished. */
2033 wake_up_all(&h->scan_wait_queue);
2034 spin_unlock_irqrestore(&h->scan_lock, flags);
2037 static int hpsa_scan_finished(struct Scsi_Host *sh,
2038 unsigned long elapsed_time)
2040 struct ctlr_info *h = shost_to_hba(sh);
2041 unsigned long flags;
2044 spin_lock_irqsave(&h->scan_lock, flags);
2045 finished = h->scan_finished;
2046 spin_unlock_irqrestore(&h->scan_lock, flags);
2050 static int hpsa_change_queue_depth(struct scsi_device *sdev,
2051 int qdepth, int reason)
2053 struct ctlr_info *h = sdev_to_hba(sdev);
2055 if (reason != SCSI_QDEPTH_DEFAULT)
2061 if (qdepth > h->nr_cmds)
2062 qdepth = h->nr_cmds;
2063 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
2064 return sdev->queue_depth;
2067 static void hpsa_unregister_scsi(struct ctlr_info *h)
2069 /* we are being forcibly unloaded, and may not refuse. */
2070 scsi_remove_host(h->scsi_host);
2071 scsi_host_put(h->scsi_host);
2072 h->scsi_host = NULL;
2075 static int hpsa_register_scsi(struct ctlr_info *h)
2079 rc = hpsa_scsi_detect(h);
2081 dev_err(&h->pdev->dev, "hpsa_register_scsi: failed"
2082 " hpsa_scsi_detect(), rc is %d\n", rc);
2086 static int wait_for_device_to_become_ready(struct ctlr_info *h,
2087 unsigned char lunaddr[])
2091 int waittime = 1; /* seconds */
2092 struct CommandList *c;
2094 c = cmd_special_alloc(h);
2096 dev_warn(&h->pdev->dev, "out of memory in "
2097 "wait_for_device_to_become_ready.\n");
2101 /* Send test unit ready until device ready, or give up. */
2102 while (count < HPSA_TUR_RETRY_LIMIT) {
2104 /* Wait for a bit. do this first, because if we send
2105 * the TUR right away, the reset will just abort it.
2107 msleep(1000 * waittime);
2110 /* Increase wait time with each try, up to a point. */
2111 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
2112 waittime = waittime * 2;
2114 /* Send the Test Unit Ready */
2115 fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, lunaddr, TYPE_CMD);
2116 hpsa_scsi_do_simple_cmd_core(h, c);
2117 /* no unmap needed here because no data xfer. */
2119 if (c->err_info->CommandStatus == CMD_SUCCESS)
2122 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
2123 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
2124 (c->err_info->SenseInfo[2] == NO_SENSE ||
2125 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
2128 dev_warn(&h->pdev->dev, "waiting %d secs "
2129 "for device to become ready.\n", waittime);
2130 rc = 1; /* device not ready. */
2134 dev_warn(&h->pdev->dev, "giving up on device.\n");
2136 dev_warn(&h->pdev->dev, "device is ready.\n");
2138 cmd_special_free(h, c);
2142 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
2143 * complaining. Doing a host- or bus-reset can't do anything good here.
2145 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
2148 struct ctlr_info *h;
2149 struct hpsa_scsi_dev_t *dev;
2151 /* find the controller to which the command to be aborted was sent */
2152 h = sdev_to_hba(scsicmd->device);
2153 if (h == NULL) /* paranoia */
2155 dev = scsicmd->device->hostdata;
2157 dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: "
2158 "device lookup failed.\n");
2161 dev_warn(&h->pdev->dev, "resetting device %d:%d:%d:%d\n",
2162 h->scsi_host->host_no, dev->bus, dev->target, dev->lun);
2163 /* send a reset to the SCSI LUN which the command was sent to */
2164 rc = hpsa_send_reset(h, dev->scsi3addr);
2165 if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0)
2168 dev_warn(&h->pdev->dev, "resetting device failed.\n");
2173 * For operations that cannot sleep, a command block is allocated at init,
2174 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
2175 * which ones are free or in use. Lock must be held when calling this.
2176 * cmd_free() is the complement.
2178 static struct CommandList *cmd_alloc(struct ctlr_info *h)
2180 struct CommandList *c;
2182 union u64bit temp64;
2183 dma_addr_t cmd_dma_handle, err_dma_handle;
2186 i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds);
2187 if (i == h->nr_cmds)
2189 } while (test_and_set_bit
2190 (i & (BITS_PER_LONG - 1),
2191 h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0);
2192 c = h->cmd_pool + i;
2193 memset(c, 0, sizeof(*c));
2194 cmd_dma_handle = h->cmd_pool_dhandle
2196 c->err_info = h->errinfo_pool + i;
2197 memset(c->err_info, 0, sizeof(*c->err_info));
2198 err_dma_handle = h->errinfo_pool_dhandle
2199 + i * sizeof(*c->err_info);
2204 INIT_HLIST_NODE(&c->list);
2205 c->busaddr = (u32) cmd_dma_handle;
2206 temp64.val = (u64) err_dma_handle;
2207 c->ErrDesc.Addr.lower = temp64.val32.lower;
2208 c->ErrDesc.Addr.upper = temp64.val32.upper;
2209 c->ErrDesc.Len = sizeof(*c->err_info);
2215 /* For operations that can wait for kmalloc to possibly sleep,
2216 * this routine can be called. Lock need not be held to call
2217 * cmd_special_alloc. cmd_special_free() is the complement.
2219 static struct CommandList *cmd_special_alloc(struct ctlr_info *h)
2221 struct CommandList *c;
2222 union u64bit temp64;
2223 dma_addr_t cmd_dma_handle, err_dma_handle;
2225 c = pci_alloc_consistent(h->pdev, sizeof(*c), &cmd_dma_handle);
2228 memset(c, 0, sizeof(*c));
2232 c->err_info = pci_alloc_consistent(h->pdev, sizeof(*c->err_info),
2235 if (c->err_info == NULL) {
2236 pci_free_consistent(h->pdev,
2237 sizeof(*c), c, cmd_dma_handle);
2240 memset(c->err_info, 0, sizeof(*c->err_info));
2242 INIT_HLIST_NODE(&c->list);
2243 c->busaddr = (u32) cmd_dma_handle;
2244 temp64.val = (u64) err_dma_handle;
2245 c->ErrDesc.Addr.lower = temp64.val32.lower;
2246 c->ErrDesc.Addr.upper = temp64.val32.upper;
2247 c->ErrDesc.Len = sizeof(*c->err_info);
2253 static void cmd_free(struct ctlr_info *h, struct CommandList *c)
2257 i = c - h->cmd_pool;
2258 clear_bit(i & (BITS_PER_LONG - 1),
2259 h->cmd_pool_bits + (i / BITS_PER_LONG));
2263 static void cmd_special_free(struct ctlr_info *h, struct CommandList *c)
2265 union u64bit temp64;
2267 temp64.val32.lower = c->ErrDesc.Addr.lower;
2268 temp64.val32.upper = c->ErrDesc.Addr.upper;
2269 pci_free_consistent(h->pdev, sizeof(*c->err_info),
2270 c->err_info, (dma_addr_t) temp64.val);
2271 pci_free_consistent(h->pdev, sizeof(*c),
2272 c, (dma_addr_t) c->busaddr);
2275 #ifdef CONFIG_COMPAT
2277 static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg)
2279 IOCTL32_Command_struct __user *arg32 =
2280 (IOCTL32_Command_struct __user *) arg;
2281 IOCTL_Command_struct arg64;
2282 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
2287 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
2288 sizeof(arg64.LUN_info));
2289 err |= copy_from_user(&arg64.Request, &arg32->Request,
2290 sizeof(arg64.Request));
2291 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
2292 sizeof(arg64.error_info));
2293 err |= get_user(arg64.buf_size, &arg32->buf_size);
2294 err |= get_user(cp, &arg32->buf);
2295 arg64.buf = compat_ptr(cp);
2296 err |= copy_to_user(p, &arg64, sizeof(arg64));
2301 err = hpsa_ioctl(dev, CCISS_PASSTHRU, (void *)p);
2304 err |= copy_in_user(&arg32->error_info, &p->error_info,
2305 sizeof(arg32->error_info));
2311 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
2314 BIG_IOCTL32_Command_struct __user *arg32 =
2315 (BIG_IOCTL32_Command_struct __user *) arg;
2316 BIG_IOCTL_Command_struct arg64;
2317 BIG_IOCTL_Command_struct __user *p =
2318 compat_alloc_user_space(sizeof(arg64));
2323 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
2324 sizeof(arg64.LUN_info));
2325 err |= copy_from_user(&arg64.Request, &arg32->Request,
2326 sizeof(arg64.Request));
2327 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
2328 sizeof(arg64.error_info));
2329 err |= get_user(arg64.buf_size, &arg32->buf_size);
2330 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
2331 err |= get_user(cp, &arg32->buf);
2332 arg64.buf = compat_ptr(cp);
2333 err |= copy_to_user(p, &arg64, sizeof(arg64));
2338 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, (void *)p);
2341 err |= copy_in_user(&arg32->error_info, &p->error_info,
2342 sizeof(arg32->error_info));
2348 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg)
2351 case CCISS_GETPCIINFO:
2352 case CCISS_GETINTINFO:
2353 case CCISS_SETINTINFO:
2354 case CCISS_GETNODENAME:
2355 case CCISS_SETNODENAME:
2356 case CCISS_GETHEARTBEAT:
2357 case CCISS_GETBUSTYPES:
2358 case CCISS_GETFIRMVER:
2359 case CCISS_GETDRIVVER:
2360 case CCISS_REVALIDVOLS:
2361 case CCISS_DEREGDISK:
2362 case CCISS_REGNEWDISK:
2364 case CCISS_RESCANDISK:
2365 case CCISS_GETLUNINFO:
2366 return hpsa_ioctl(dev, cmd, arg);
2368 case CCISS_PASSTHRU32:
2369 return hpsa_ioctl32_passthru(dev, cmd, arg);
2370 case CCISS_BIG_PASSTHRU32:
2371 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
2374 return -ENOIOCTLCMD;
2379 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
2381 struct hpsa_pci_info pciinfo;
2385 pciinfo.domain = pci_domain_nr(h->pdev->bus);
2386 pciinfo.bus = h->pdev->bus->number;
2387 pciinfo.dev_fn = h->pdev->devfn;
2388 pciinfo.board_id = h->board_id;
2389 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
2394 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
2396 DriverVer_type DriverVer;
2397 unsigned char vmaj, vmin, vsubmin;
2400 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
2401 &vmaj, &vmin, &vsubmin);
2403 dev_info(&h->pdev->dev, "driver version string '%s' "
2404 "unrecognized.", HPSA_DRIVER_VERSION);
2409 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
2412 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
2417 static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
2419 IOCTL_Command_struct iocommand;
2420 struct CommandList *c;
2422 union u64bit temp64;
2426 if (!capable(CAP_SYS_RAWIO))
2428 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
2430 if ((iocommand.buf_size < 1) &&
2431 (iocommand.Request.Type.Direction != XFER_NONE)) {
2434 if (iocommand.buf_size > 0) {
2435 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
2439 if (iocommand.Request.Type.Direction == XFER_WRITE) {
2440 /* Copy the data into the buffer we created */
2441 if (copy_from_user(buff, iocommand.buf, iocommand.buf_size)) {
2446 memset(buff, 0, iocommand.buf_size);
2447 c = cmd_special_alloc(h);
2452 /* Fill in the command type */
2453 c->cmd_type = CMD_IOCTL_PEND;
2454 /* Fill in Command Header */
2455 c->Header.ReplyQueue = 0; /* unused in simple mode */
2456 if (iocommand.buf_size > 0) { /* buffer to fill */
2457 c->Header.SGList = 1;
2458 c->Header.SGTotal = 1;
2459 } else { /* no buffers to fill */
2460 c->Header.SGList = 0;
2461 c->Header.SGTotal = 0;
2463 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
2464 /* use the kernel address the cmd block for tag */
2465 c->Header.Tag.lower = c->busaddr;
2467 /* Fill in Request block */
2468 memcpy(&c->Request, &iocommand.Request,
2469 sizeof(c->Request));
2471 /* Fill in the scatter gather information */
2472 if (iocommand.buf_size > 0) {
2473 temp64.val = pci_map_single(h->pdev, buff,
2474 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
2475 c->SG[0].Addr.lower = temp64.val32.lower;
2476 c->SG[0].Addr.upper = temp64.val32.upper;
2477 c->SG[0].Len = iocommand.buf_size;
2478 c->SG[0].Ext = 0; /* we are not chaining*/
2480 hpsa_scsi_do_simple_cmd_core(h, c);
2481 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
2482 check_ioctl_unit_attention(h, c);
2484 /* Copy the error information out */
2485 memcpy(&iocommand.error_info, c->err_info,
2486 sizeof(iocommand.error_info));
2487 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
2489 cmd_special_free(h, c);
2493 if (iocommand.Request.Type.Direction == XFER_READ) {
2494 /* Copy the data out of the buffer we created */
2495 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
2497 cmd_special_free(h, c);
2502 cmd_special_free(h, c);
2506 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
2508 BIG_IOCTL_Command_struct *ioc;
2509 struct CommandList *c;
2510 unsigned char **buff = NULL;
2511 int *buff_size = NULL;
2512 union u64bit temp64;
2518 BYTE __user *data_ptr;
2522 if (!capable(CAP_SYS_RAWIO))
2524 ioc = (BIG_IOCTL_Command_struct *)
2525 kmalloc(sizeof(*ioc), GFP_KERNEL);
2530 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
2534 if ((ioc->buf_size < 1) &&
2535 (ioc->Request.Type.Direction != XFER_NONE)) {
2539 /* Check kmalloc limits using all SGs */
2540 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
2544 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
2548 buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL);
2553 buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL);
2558 left = ioc->buf_size;
2559 data_ptr = ioc->buf;
2561 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
2562 buff_size[sg_used] = sz;
2563 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
2564 if (buff[sg_used] == NULL) {
2568 if (ioc->Request.Type.Direction == XFER_WRITE) {
2569 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
2574 memset(buff[sg_used], 0, sz);
2579 c = cmd_special_alloc(h);
2584 c->cmd_type = CMD_IOCTL_PEND;
2585 c->Header.ReplyQueue = 0;
2587 if (ioc->buf_size > 0) {
2588 c->Header.SGList = sg_used;
2589 c->Header.SGTotal = sg_used;
2591 c->Header.SGList = 0;
2592 c->Header.SGTotal = 0;
2594 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
2595 c->Header.Tag.lower = c->busaddr;
2596 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
2597 if (ioc->buf_size > 0) {
2599 for (i = 0; i < sg_used; i++) {
2600 temp64.val = pci_map_single(h->pdev, buff[i],
2601 buff_size[i], PCI_DMA_BIDIRECTIONAL);
2602 c->SG[i].Addr.lower = temp64.val32.lower;
2603 c->SG[i].Addr.upper = temp64.val32.upper;
2604 c->SG[i].Len = buff_size[i];
2605 /* we are not chaining */
2609 hpsa_scsi_do_simple_cmd_core(h, c);
2610 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
2611 check_ioctl_unit_attention(h, c);
2612 /* Copy the error information out */
2613 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
2614 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
2615 cmd_special_free(h, c);
2619 if (ioc->Request.Type.Direction == XFER_READ) {
2620 /* Copy the data out of the buffer we created */
2621 BYTE __user *ptr = ioc->buf;
2622 for (i = 0; i < sg_used; i++) {
2623 if (copy_to_user(ptr, buff[i], buff_size[i])) {
2624 cmd_special_free(h, c);
2628 ptr += buff_size[i];
2631 cmd_special_free(h, c);
2635 for (i = 0; i < sg_used; i++)
2644 static void check_ioctl_unit_attention(struct ctlr_info *h,
2645 struct CommandList *c)
2647 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
2648 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
2649 (void) check_for_unit_attention(h, c);
2654 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg)
2656 struct ctlr_info *h;
2657 void __user *argp = (void __user *)arg;
2659 h = sdev_to_hba(dev);
2662 case CCISS_DEREGDISK:
2663 case CCISS_REGNEWDISK:
2665 hpsa_scan_start(h->scsi_host);
2667 case CCISS_GETPCIINFO:
2668 return hpsa_getpciinfo_ioctl(h, argp);
2669 case CCISS_GETDRIVVER:
2670 return hpsa_getdrivver_ioctl(h, argp);
2671 case CCISS_PASSTHRU:
2672 return hpsa_passthru_ioctl(h, argp);
2673 case CCISS_BIG_PASSTHRU:
2674 return hpsa_big_passthru_ioctl(h, argp);
2680 static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
2681 void *buff, size_t size, u8 page_code, unsigned char *scsi3addr,
2684 int pci_dir = XFER_NONE;
2686 c->cmd_type = CMD_IOCTL_PEND;
2687 c->Header.ReplyQueue = 0;
2688 if (buff != NULL && size > 0) {
2689 c->Header.SGList = 1;
2690 c->Header.SGTotal = 1;
2692 c->Header.SGList = 0;
2693 c->Header.SGTotal = 0;
2695 c->Header.Tag.lower = c->busaddr;
2696 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
2698 c->Request.Type.Type = cmd_type;
2699 if (cmd_type == TYPE_CMD) {
2702 /* are we trying to read a vital product page */
2703 if (page_code != 0) {
2704 c->Request.CDB[1] = 0x01;
2705 c->Request.CDB[2] = page_code;
2707 c->Request.CDBLen = 6;
2708 c->Request.Type.Attribute = ATTR_SIMPLE;
2709 c->Request.Type.Direction = XFER_READ;
2710 c->Request.Timeout = 0;
2711 c->Request.CDB[0] = HPSA_INQUIRY;
2712 c->Request.CDB[4] = size & 0xFF;
2714 case HPSA_REPORT_LOG:
2715 case HPSA_REPORT_PHYS:
2716 /* Talking to controller so It's a physical command
2717 mode = 00 target = 0. Nothing to write.
2719 c->Request.CDBLen = 12;
2720 c->Request.Type.Attribute = ATTR_SIMPLE;
2721 c->Request.Type.Direction = XFER_READ;
2722 c->Request.Timeout = 0;
2723 c->Request.CDB[0] = cmd;
2724 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
2725 c->Request.CDB[7] = (size >> 16) & 0xFF;
2726 c->Request.CDB[8] = (size >> 8) & 0xFF;
2727 c->Request.CDB[9] = size & 0xFF;
2729 case HPSA_CACHE_FLUSH:
2730 c->Request.CDBLen = 12;
2731 c->Request.Type.Attribute = ATTR_SIMPLE;
2732 c->Request.Type.Direction = XFER_WRITE;
2733 c->Request.Timeout = 0;
2734 c->Request.CDB[0] = BMIC_WRITE;
2735 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
2737 case TEST_UNIT_READY:
2738 c->Request.CDBLen = 6;
2739 c->Request.Type.Attribute = ATTR_SIMPLE;
2740 c->Request.Type.Direction = XFER_NONE;
2741 c->Request.Timeout = 0;
2744 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
2748 } else if (cmd_type == TYPE_MSG) {
2751 case HPSA_DEVICE_RESET_MSG:
2752 c->Request.CDBLen = 16;
2753 c->Request.Type.Type = 1; /* It is a MSG not a CMD */
2754 c->Request.Type.Attribute = ATTR_SIMPLE;
2755 c->Request.Type.Direction = XFER_NONE;
2756 c->Request.Timeout = 0; /* Don't time out */
2757 c->Request.CDB[0] = 0x01; /* RESET_MSG is 0x01 */
2758 c->Request.CDB[1] = 0x03; /* Reset target above */
2759 /* If bytes 4-7 are zero, it means reset the */
2761 c->Request.CDB[4] = 0x00;
2762 c->Request.CDB[5] = 0x00;
2763 c->Request.CDB[6] = 0x00;
2764 c->Request.CDB[7] = 0x00;
2768 dev_warn(&h->pdev->dev, "unknown message type %d\n",
2773 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
2777 switch (c->Request.Type.Direction) {
2779 pci_dir = PCI_DMA_FROMDEVICE;
2782 pci_dir = PCI_DMA_TODEVICE;
2785 pci_dir = PCI_DMA_NONE;
2788 pci_dir = PCI_DMA_BIDIRECTIONAL;
2791 hpsa_map_one(h->pdev, c, buff, size, pci_dir);
2797 * Map (physical) PCI mem into (virtual) kernel space
2799 static void __iomem *remap_pci_mem(ulong base, ulong size)
2801 ulong page_base = ((ulong) base) & PAGE_MASK;
2802 ulong page_offs = ((ulong) base) - page_base;
2803 void __iomem *page_remapped = ioremap(page_base, page_offs + size);
2805 return page_remapped ? (page_remapped + page_offs) : NULL;
2808 /* Takes cmds off the submission queue and sends them to the hardware,
2809 * then puts them on the queue of cmds waiting for completion.
2811 static void start_io(struct ctlr_info *h)
2813 struct CommandList *c;
2815 while (!hlist_empty(&h->reqQ)) {
2816 c = hlist_entry(h->reqQ.first, struct CommandList, list);
2817 /* can't do anything if fifo is full */
2818 if ((h->access.fifo_full(h))) {
2819 dev_warn(&h->pdev->dev, "fifo full\n");
2823 /* Get the first entry from the Request Q */
2827 /* Tell the controller execute command */
2828 h->access.submit_command(h, c);
2830 /* Put job onto the completed Q */
2835 static inline unsigned long get_next_completion(struct ctlr_info *h)
2837 return h->access.command_completed(h);
2840 static inline bool interrupt_pending(struct ctlr_info *h)
2842 return h->access.intr_pending(h);
2845 static inline long interrupt_not_for_us(struct ctlr_info *h)
2847 return (h->access.intr_pending(h) == 0) ||
2848 (h->interrupts_enabled == 0);
2851 static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
2854 if (unlikely(tag_index >= h->nr_cmds)) {
2855 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
2861 static inline void finish_cmd(struct CommandList *c, u32 raw_tag)
2864 if (likely(c->cmd_type == CMD_SCSI))
2865 complete_scsi_command(c, 0, raw_tag);
2866 else if (c->cmd_type == CMD_IOCTL_PEND)
2867 complete(c->waiting);
2870 static inline u32 hpsa_tag_contains_index(u32 tag)
2872 #define DIRECT_LOOKUP_BIT 0x10
2873 return tag & DIRECT_LOOKUP_BIT;
2876 static inline u32 hpsa_tag_to_index(u32 tag)
2878 #define DIRECT_LOOKUP_SHIFT 5
2879 return tag >> DIRECT_LOOKUP_SHIFT;
2882 static inline u32 hpsa_tag_discard_error_bits(u32 tag)
2884 #define HPSA_ERROR_BITS 0x03
2885 return tag & ~HPSA_ERROR_BITS;
2888 /* process completion of an indexed ("direct lookup") command */
2889 static inline u32 process_indexed_cmd(struct ctlr_info *h,
2893 struct CommandList *c;
2895 tag_index = hpsa_tag_to_index(raw_tag);
2896 if (bad_tag(h, tag_index, raw_tag))
2897 return next_command(h);
2898 c = h->cmd_pool + tag_index;
2899 finish_cmd(c, raw_tag);
2900 return next_command(h);
2903 /* process completion of a non-indexed command */
2904 static inline u32 process_nonindexed_cmd(struct ctlr_info *h,
2908 struct CommandList *c = NULL;
2909 struct hlist_node *tmp;
2911 tag = hpsa_tag_discard_error_bits(raw_tag);
2912 hlist_for_each_entry(c, tmp, &h->cmpQ, list) {
2913 if ((c->busaddr & 0xFFFFFFE0) == (tag & 0xFFFFFFE0)) {
2914 finish_cmd(c, raw_tag);
2915 return next_command(h);
2918 bad_tag(h, h->nr_cmds + 1, raw_tag);
2919 return next_command(h);
2922 static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id)
2924 struct ctlr_info *h = dev_id;
2925 unsigned long flags;
2928 if (interrupt_not_for_us(h))
2930 spin_lock_irqsave(&h->lock, flags);
2931 while (interrupt_pending(h)) {
2932 raw_tag = get_next_completion(h);
2933 while (raw_tag != FIFO_EMPTY) {
2934 if (hpsa_tag_contains_index(raw_tag))
2935 raw_tag = process_indexed_cmd(h, raw_tag);
2937 raw_tag = process_nonindexed_cmd(h, raw_tag);
2940 spin_unlock_irqrestore(&h->lock, flags);
2944 static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id)
2946 struct ctlr_info *h = dev_id;
2947 unsigned long flags;
2950 spin_lock_irqsave(&h->lock, flags);
2951 raw_tag = get_next_completion(h);
2952 while (raw_tag != FIFO_EMPTY) {
2953 if (hpsa_tag_contains_index(raw_tag))
2954 raw_tag = process_indexed_cmd(h, raw_tag);
2956 raw_tag = process_nonindexed_cmd(h, raw_tag);
2958 spin_unlock_irqrestore(&h->lock, flags);
2962 /* Send a message CDB to the firmware. */
2963 static __devinit int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
2967 struct CommandListHeader CommandHeader;
2968 struct RequestBlock Request;
2969 struct ErrDescriptor ErrorDescriptor;
2971 struct Command *cmd;
2972 static const size_t cmd_sz = sizeof(*cmd) +
2973 sizeof(cmd->ErrorDescriptor);
2975 uint32_t paddr32, tag;
2976 void __iomem *vaddr;
2979 vaddr = pci_ioremap_bar(pdev, 0);
2983 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
2984 * CCISS commands, so they must be allocated from the lower 4GiB of
2987 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2993 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
2999 /* This must fit, because of the 32-bit consistent DMA mask. Also,
3000 * although there's no guarantee, we assume that the address is at
3001 * least 4-byte aligned (most likely, it's page-aligned).
3005 cmd->CommandHeader.ReplyQueue = 0;
3006 cmd->CommandHeader.SGList = 0;
3007 cmd->CommandHeader.SGTotal = 0;
3008 cmd->CommandHeader.Tag.lower = paddr32;
3009 cmd->CommandHeader.Tag.upper = 0;
3010 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
3012 cmd->Request.CDBLen = 16;
3013 cmd->Request.Type.Type = TYPE_MSG;
3014 cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE;
3015 cmd->Request.Type.Direction = XFER_NONE;
3016 cmd->Request.Timeout = 0; /* Don't time out */
3017 cmd->Request.CDB[0] = opcode;
3018 cmd->Request.CDB[1] = type;
3019 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
3020 cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(*cmd);
3021 cmd->ErrorDescriptor.Addr.upper = 0;
3022 cmd->ErrorDescriptor.Len = sizeof(struct ErrorInfo);
3024 writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET);
3026 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
3027 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
3028 if (hpsa_tag_discard_error_bits(tag) == paddr32)
3030 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
3035 /* we leak the DMA buffer here ... no choice since the controller could
3036 * still complete the command.
3038 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
3039 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
3044 pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
3046 if (tag & HPSA_ERROR_BIT) {
3047 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
3052 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
3057 #define hpsa_soft_reset_controller(p) hpsa_message(p, 1, 0)
3058 #define hpsa_noop(p) hpsa_message(p, 3, 0)
3060 static __devinit int hpsa_reset_msi(struct pci_dev *pdev)
3062 /* the #defines are stolen from drivers/pci/msi.h. */
3063 #define msi_control_reg(base) (base + PCI_MSI_FLAGS)
3064 #define PCI_MSIX_FLAGS_ENABLE (1 << 15)
3069 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
3071 pci_read_config_word(pdev, msi_control_reg(pos), &control);
3072 if (control & PCI_MSI_FLAGS_ENABLE) {
3073 dev_info(&pdev->dev, "resetting MSI\n");
3074 pci_write_config_word(pdev, msi_control_reg(pos),
3075 control & ~PCI_MSI_FLAGS_ENABLE);
3079 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
3081 pci_read_config_word(pdev, msi_control_reg(pos), &control);
3082 if (control & PCI_MSIX_FLAGS_ENABLE) {
3083 dev_info(&pdev->dev, "resetting MSI-X\n");
3084 pci_write_config_word(pdev, msi_control_reg(pos),
3085 control & ~PCI_MSIX_FLAGS_ENABLE);
3092 static int hpsa_controller_hard_reset(struct pci_dev *pdev,
3093 void * __iomem vaddr, bool use_doorbell)
3099 /* For everything after the P600, the PCI power state method
3100 * of resetting the controller doesn't work, so we have this
3101 * other way using the doorbell register.
3103 dev_info(&pdev->dev, "using doorbell to reset controller\n");
3104 writel(DOORBELL_CTLR_RESET, vaddr + SA5_DOORBELL);
3106 } else { /* Try to do it the PCI power state way */
3108 /* Quoting from the Open CISS Specification: "The Power
3109 * Management Control/Status Register (CSR) controls the power
3110 * state of the device. The normal operating state is D0,
3111 * CSR=00h. The software off state is D3, CSR=03h. To reset
3112 * the controller, place the interface device in D3 then to D0,
3113 * this causes a secondary PCI reset which will reset the
3116 pos = pci_find_capability(pdev, PCI_CAP_ID_PM);
3119 "hpsa_reset_controller: "
3120 "PCI PM not supported\n");
3123 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
3124 /* enter the D3hot power management state */
3125 pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr);
3126 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3128 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
3132 /* enter the D0 power management state */
3133 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3135 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
3142 /* This does a hard reset of the controller using PCI power management
3143 * states or the using the doorbell register.
3145 static __devinit int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev)
3147 u16 saved_config_space[32];
3150 u64 cfg_base_addr_index;
3151 void __iomem *vaddr;
3152 unsigned long paddr;
3153 u32 misc_fw_support, active_transport;
3155 struct CfgTable __iomem *cfgtable;
3159 /* For controllers as old as the P600, this is very nearly
3162 * pci_save_state(pci_dev);
3163 * pci_set_power_state(pci_dev, PCI_D3hot);
3164 * pci_set_power_state(pci_dev, PCI_D0);
3165 * pci_restore_state(pci_dev);
3167 * but we can't use these nice canned kernel routines on
3168 * kexec, because they also check the MSI/MSI-X state in PCI
3169 * configuration space and do the wrong thing when it is
3170 * set/cleared. Also, the pci_save/restore_state functions
3171 * violate the ordering requirements for restoring the
3172 * configuration space from the CCISS document (see the
3173 * comment below). So we roll our own ....
3175 * For controllers newer than the P600, the pci power state
3176 * method of resetting doesn't work so we have another way
3177 * using the doorbell register.
3180 /* Exclude 640x boards. These are two pci devices in one slot
3181 * which share a battery backed cache module. One controls the
3182 * cache, the other accesses the cache through the one that controls
3183 * it. If we reset the one controlling the cache, the other will
3184 * likely not be happy. Just forbid resetting this conjoined mess.
3185 * The 640x isn't really supported by hpsa anyway.
3187 hpsa_lookup_board_id(pdev, &board_id);
3188 if (board_id == 0x409C0E11 || board_id == 0x409D0E11)
3191 for (i = 0; i < 32; i++)
3192 pci_read_config_word(pdev, 2*i, &saved_config_space[i]);
3195 /* find the first memory BAR, so we can find the cfg table */
3196 rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
3199 vaddr = remap_pci_mem(paddr, 0x250);
3203 /* find cfgtable in order to check if reset via doorbell is supported */
3204 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
3205 &cfg_base_addr_index, &cfg_offset);
3208 cfgtable = remap_pci_mem(pci_resource_start(pdev,
3209 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
3215 /* If reset via doorbell register is supported, use that. */
3216 misc_fw_support = readl(&cfgtable->misc_fw_support);
3217 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
3219 /* The doorbell reset seems to cause lockups on some Smart
3220 * Arrays (e.g. P410, P410i, maybe others). Until this is
3221 * fixed or at least isolated, avoid the doorbell reset.
3225 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
3227 goto unmap_cfgtable;
3229 /* Restore the PCI configuration space. The Open CISS
3230 * Specification says, "Restore the PCI Configuration
3231 * Registers, offsets 00h through 60h. It is important to
3232 * restore the command register, 16-bits at offset 04h,
3233 * last. Do not restore the configuration status register,
3234 * 16-bits at offset 06h." Note that the offset is 2*i.
3236 for (i = 0; i < 32; i++) {
3237 if (i == 2 || i == 3)
3239 pci_write_config_word(pdev, 2*i, saved_config_space[i]);
3242 pci_write_config_word(pdev, 4, saved_config_space[2]);
3244 /* Some devices (notably the HP Smart Array 5i Controller)
3245 need a little pause here */
3246 msleep(HPSA_POST_RESET_PAUSE_MSECS);
3248 /* Controller should be in simple mode at this point. If it's not,
3249 * It means we're on one of those controllers which doesn't support
3250 * the doorbell reset method and on which the PCI power management reset
3251 * method doesn't work (P800, for example.)
3252 * In those cases, pretend the reset worked and hope for the best.
3254 active_transport = readl(&cfgtable->TransportActive);
3255 if (active_transport & PERFORMANT_MODE) {
3256 dev_warn(&pdev->dev, "Unable to successfully reset controller,"
3257 " proceeding anyway.\n");
3270 * We cannot read the structure directly, for portability we must use
3272 * This is for debug only.
3274 static void print_cfg_table(struct device *dev, struct CfgTable *tb)
3280 dev_info(dev, "Controller Configuration information\n");
3281 dev_info(dev, "------------------------------------\n");
3282 for (i = 0; i < 4; i++)
3283 temp_name[i] = readb(&(tb->Signature[i]));
3284 temp_name[4] = '\0';
3285 dev_info(dev, " Signature = %s\n", temp_name);
3286 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
3287 dev_info(dev, " Transport methods supported = 0x%x\n",
3288 readl(&(tb->TransportSupport)));
3289 dev_info(dev, " Transport methods active = 0x%x\n",
3290 readl(&(tb->TransportActive)));
3291 dev_info(dev, " Requested transport Method = 0x%x\n",
3292 readl(&(tb->HostWrite.TransportRequest)));
3293 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
3294 readl(&(tb->HostWrite.CoalIntDelay)));
3295 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
3296 readl(&(tb->HostWrite.CoalIntCount)));
3297 dev_info(dev, " Max outstanding commands = 0x%d\n",
3298 readl(&(tb->CmdsOutMax)));
3299 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
3300 for (i = 0; i < 16; i++)
3301 temp_name[i] = readb(&(tb->ServerName[i]));
3302 temp_name[16] = '\0';
3303 dev_info(dev, " Server Name = %s\n", temp_name);
3304 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
3305 readl(&(tb->HeartBeat)));
3306 #endif /* HPSA_DEBUG */
3309 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
3311 int i, offset, mem_type, bar_type;
3313 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
3316 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
3317 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
3318 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
3321 mem_type = pci_resource_flags(pdev, i) &
3322 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
3324 case PCI_BASE_ADDRESS_MEM_TYPE_32:
3325 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
3326 offset += 4; /* 32 bit */
3328 case PCI_BASE_ADDRESS_MEM_TYPE_64:
3331 default: /* reserved in PCI 2.2 */
3332 dev_warn(&pdev->dev,
3333 "base address is invalid\n");
3338 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
3344 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
3345 * controllers that are capable. If not, we use IO-APIC mode.
3348 static void __devinit hpsa_interrupt_mode(struct ctlr_info *h)
3350 #ifdef CONFIG_PCI_MSI
3352 struct msix_entry hpsa_msix_entries[4] = { {0, 0}, {0, 1},
3356 /* Some boards advertise MSI but don't really support it */
3357 if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||
3358 (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))
3359 goto default_int_mode;
3360 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
3361 dev_info(&h->pdev->dev, "MSIX\n");
3362 err = pci_enable_msix(h->pdev, hpsa_msix_entries, 4);
3364 h->intr[0] = hpsa_msix_entries[0].vector;
3365 h->intr[1] = hpsa_msix_entries[1].vector;
3366 h->intr[2] = hpsa_msix_entries[2].vector;
3367 h->intr[3] = hpsa_msix_entries[3].vector;
3372 dev_warn(&h->pdev->dev, "only %d MSI-X vectors "
3373 "available\n", err);
3374 goto default_int_mode;
3376 dev_warn(&h->pdev->dev, "MSI-X init failed %d\n",
3378 goto default_int_mode;
3381 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
3382 dev_info(&h->pdev->dev, "MSI\n");
3383 if (!pci_enable_msi(h->pdev))
3386 dev_warn(&h->pdev->dev, "MSI init failed\n");
3389 #endif /* CONFIG_PCI_MSI */
3390 /* if we get here we're going to use the default interrupt mode */
3391 h->intr[PERF_MODE_INT] = h->pdev->irq;
3394 static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
3397 u32 subsystem_vendor_id, subsystem_device_id;
3399 subsystem_vendor_id = pdev->subsystem_vendor;
3400 subsystem_device_id = pdev->subsystem_device;
3401 *board_id = ((subsystem_device_id << 16) & 0xffff0000) |
3402 subsystem_vendor_id;
3404 for (i = 0; i < ARRAY_SIZE(products); i++)
3405 if (*board_id == products[i].board_id)
3408 if ((subsystem_vendor_id != PCI_VENDOR_ID_HP &&
3409 subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) ||
3411 dev_warn(&pdev->dev, "unrecognized board ID: "
3412 "0x%08x, ignoring.\n", *board_id);
3415 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
3418 static inline bool hpsa_board_disabled(struct pci_dev *pdev)
3422 (void) pci_read_config_word(pdev, PCI_COMMAND, &command);
3423 return ((command & PCI_COMMAND_MEMORY) == 0);
3426 static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
3427 unsigned long *memory_bar)
3431 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
3432 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
3433 /* addressing mode bits already removed */
3434 *memory_bar = pci_resource_start(pdev, i);
3435 dev_dbg(&pdev->dev, "memory BAR = %lx\n",
3439 dev_warn(&pdev->dev, "no memory BAR found\n");
3443 static int __devinit hpsa_wait_for_board_ready(struct ctlr_info *h)
3448 for (i = 0; i < HPSA_BOARD_READY_ITERATIONS; i++) {
3449 scratchpad = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
3450 if (scratchpad == HPSA_FIRMWARE_READY)
3452 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
3454 dev_warn(&h->pdev->dev, "board not ready, timed out.\n");
3458 static int __devinit hpsa_find_cfg_addrs(struct pci_dev *pdev,
3459 void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index,
3462 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
3463 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
3464 *cfg_base_addr &= (u32) 0x0000ffff;
3465 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
3466 if (*cfg_base_addr_index == -1) {
3467 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
3473 static int __devinit hpsa_find_cfgtables(struct ctlr_info *h)
3477 u64 cfg_base_addr_index;
3481 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
3482 &cfg_base_addr_index, &cfg_offset);
3485 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
3486 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
3489 /* Find performant mode table. */
3490 trans_offset = readl(&h->cfgtable->TransMethodOffset);
3491 h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
3492 cfg_base_addr_index)+cfg_offset+trans_offset,
3493 sizeof(*h->transtable));
3499 static void __devinit hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
3501 h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands));
3502 if (h->max_commands < 16) {
3503 dev_warn(&h->pdev->dev, "Controller reports "
3504 "max supported commands of %d, an obvious lie. "
3505 "Using 16. Ensure that firmware is up to date.\n",
3507 h->max_commands = 16;
3511 /* Interrogate the hardware for some limits:
3512 * max commands, max SG elements without chaining, and with chaining,
3513 * SG chain block size, etc.
3515 static void __devinit hpsa_find_board_params(struct ctlr_info *h)
3517 hpsa_get_max_perf_mode_cmds(h);
3518 h->nr_cmds = h->max_commands - 4; /* Allow room for some ioctls */
3519 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
3521 * Limit in-command s/g elements to 32 save dma'able memory.
3522 * Howvever spec says if 0, use 31
3524 h->max_cmd_sg_entries = 31;
3525 if (h->maxsgentries > 512) {
3526 h->max_cmd_sg_entries = 32;
3527 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries + 1;
3528 h->maxsgentries--; /* save one for chain pointer */
3530 h->maxsgentries = 31; /* default to traditional values */
3535 static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
3537 if ((readb(&h->cfgtable->Signature[0]) != 'C') ||
3538 (readb(&h->cfgtable->Signature[1]) != 'I') ||
3539 (readb(&h->cfgtable->Signature[2]) != 'S') ||
3540 (readb(&h->cfgtable->Signature[3]) != 'S')) {
3541 dev_warn(&h->pdev->dev, "not a valid CISS config table\n");
3547 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
3548 static inline void hpsa_enable_scsi_prefetch(struct ctlr_info *h)
3553 prefetch = readl(&(h->cfgtable->SCSI_Prefetch));
3555 writel(prefetch, &(h->cfgtable->SCSI_Prefetch));
3559 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
3560 * in a prefetch beyond physical memory.
3562 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
3566 if (h->board_id != 0x3225103C)
3568 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
3569 dma_prefetch |= 0x8000;
3570 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
3573 static void __devinit hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
3577 /* under certain very rare conditions, this can take awhile.
3578 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3579 * as we enter this code.)
3581 for (i = 0; i < MAX_CONFIG_WAIT; i++) {
3582 if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
3584 /* delay and try again */
3589 static int __devinit hpsa_enter_simple_mode(struct ctlr_info *h)
3593 trans_support = readl(&(h->cfgtable->TransportSupport));
3594 if (!(trans_support & SIMPLE_MODE))
3597 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
3598 /* Update the field, and then ring the doorbell */
3599 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
3600 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
3601 hpsa_wait_for_mode_change_ack(h);
3602 print_cfg_table(&h->pdev->dev, h->cfgtable);
3603 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
3604 dev_warn(&h->pdev->dev,
3605 "unable to get board into simple mode\n");
3611 static int __devinit hpsa_pci_init(struct ctlr_info *h)
3613 int prod_index, err;
3615 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id);
3618 h->product_name = products[prod_index].product_name;
3619 h->access = *(products[prod_index].access);
3621 if (hpsa_board_disabled(h->pdev)) {
3622 dev_warn(&h->pdev->dev, "controller appears to be disabled\n");
3625 err = pci_enable_device(h->pdev);
3627 dev_warn(&h->pdev->dev, "unable to enable PCI device\n");
3631 err = pci_request_regions(h->pdev, "hpsa");
3633 dev_err(&h->pdev->dev,
3634 "cannot obtain PCI resources, aborting\n");
3637 hpsa_interrupt_mode(h);
3638 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
3640 goto err_out_free_res;
3641 h->vaddr = remap_pci_mem(h->paddr, 0x250);
3644 goto err_out_free_res;
3646 err = hpsa_wait_for_board_ready(h);
3648 goto err_out_free_res;
3649 err = hpsa_find_cfgtables(h);
3651 goto err_out_free_res;
3652 hpsa_find_board_params(h);
3654 if (!hpsa_CISS_signature_present(h)) {
3656 goto err_out_free_res;
3658 hpsa_enable_scsi_prefetch(h);
3659 hpsa_p600_dma_prefetch_quirk(h);
3660 err = hpsa_enter_simple_mode(h);
3662 goto err_out_free_res;
3667 iounmap(h->transtable);
3669 iounmap(h->cfgtable);
3673 * Deliberately omit pci_disable_device(): it does something nasty to
3674 * Smart Array controllers that pci_enable_device does not undo
3676 pci_release_regions(h->pdev);
3680 static void __devinit hpsa_hba_inquiry(struct ctlr_info *h)
3684 #define HBA_INQUIRY_BYTE_COUNT 64
3685 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
3686 if (!h->hba_inquiry_data)
3688 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
3689 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
3691 kfree(h->hba_inquiry_data);
3692 h->hba_inquiry_data = NULL;
3696 static __devinit int hpsa_init_reset_devices(struct pci_dev *pdev)
3703 /* Reset the controller with a PCI power-cycle or via doorbell */
3704 rc = hpsa_kdump_hard_reset_controller(pdev);
3706 /* -ENOTSUPP here means we cannot reset the controller
3707 * but it's already (and still) up and running in
3708 * "performant mode". Or, it might be 640x, which can't reset
3709 * due to concerns about shared bbwc between 6402/6404 pair.
3711 if (rc == -ENOTSUPP)
3712 return 0; /* just try to do the kdump anyhow. */
3715 if (hpsa_reset_msi(pdev))
3718 /* Now try to get the controller to respond to a no-op */
3719 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
3720 if (hpsa_noop(pdev) == 0)
3723 dev_warn(&pdev->dev, "no-op failed%s\n",
3724 (i < 11 ? "; re-trying" : ""));
3729 static int __devinit hpsa_init_one(struct pci_dev *pdev,
3730 const struct pci_device_id *ent)
3733 struct ctlr_info *h;
3735 if (number_of_controllers == 0)
3736 printk(KERN_INFO DRIVER_NAME "\n");
3738 rc = hpsa_init_reset_devices(pdev);
3742 /* Command structures must be aligned on a 32-byte boundary because
3743 * the 5 lower bits of the address are used by the hardware. and by
3744 * the driver. See comments in hpsa.h for more info.
3746 #define COMMANDLIST_ALIGNMENT 32
3747 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
3748 h = kzalloc(sizeof(*h), GFP_KERNEL);
3753 h->busy_initializing = 1;
3754 INIT_HLIST_HEAD(&h->cmpQ);
3755 INIT_HLIST_HEAD(&h->reqQ);
3756 rc = hpsa_pci_init(h);
3760 sprintf(h->devname, "hpsa%d", number_of_controllers);
3761 h->ctlr = number_of_controllers;
3762 number_of_controllers++;
3764 /* configure PCI DMA stuff */
3765 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
3769 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3773 dev_err(&pdev->dev, "no suitable DMA available\n");
3778 /* make sure the board interrupts are off */
3779 h->access.set_intr_mask(h, HPSA_INTR_OFF);
3781 if (h->msix_vector || h->msi_vector)
3782 rc = request_irq(h->intr[PERF_MODE_INT], do_hpsa_intr_msi,
3783 IRQF_DISABLED, h->devname, h);
3785 rc = request_irq(h->intr[PERF_MODE_INT], do_hpsa_intr_intx,
3786 IRQF_DISABLED, h->devname, h);
3788 dev_err(&pdev->dev, "unable to get irq %d for %s\n",
3789 h->intr[PERF_MODE_INT], h->devname);
3793 dev_info(&pdev->dev, "%s: <0x%x> at IRQ %d%s using DAC\n",
3794 h->devname, pdev->device,
3795 h->intr[PERF_MODE_INT], dac ? "" : " not");
3798 kmalloc(((h->nr_cmds + BITS_PER_LONG -
3799 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL);
3800 h->cmd_pool = pci_alloc_consistent(h->pdev,
3801 h->nr_cmds * sizeof(*h->cmd_pool),
3802 &(h->cmd_pool_dhandle));
3803 h->errinfo_pool = pci_alloc_consistent(h->pdev,
3804 h->nr_cmds * sizeof(*h->errinfo_pool),
3805 &(h->errinfo_pool_dhandle));
3806 if ((h->cmd_pool_bits == NULL)
3807 || (h->cmd_pool == NULL)
3808 || (h->errinfo_pool == NULL)) {
3809 dev_err(&pdev->dev, "out of memory");
3813 if (hpsa_allocate_sg_chain_blocks(h))
3815 spin_lock_init(&h->lock);
3816 spin_lock_init(&h->scan_lock);
3817 init_waitqueue_head(&h->scan_wait_queue);
3818 h->scan_finished = 1; /* no scan currently in progress */
3820 pci_set_drvdata(pdev, h);
3821 memset(h->cmd_pool_bits, 0,
3822 ((h->nr_cmds + BITS_PER_LONG -
3823 1) / BITS_PER_LONG) * sizeof(unsigned long));
3827 /* Turn the interrupts on so we can service requests */
3828 h->access.set_intr_mask(h, HPSA_INTR_ON);
3830 hpsa_put_ctlr_into_performant_mode(h);
3831 hpsa_hba_inquiry(h);
3832 hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */
3833 h->busy_initializing = 0;
3837 hpsa_free_sg_chain_blocks(h);
3838 kfree(h->cmd_pool_bits);
3840 pci_free_consistent(h->pdev,
3841 h->nr_cmds * sizeof(struct CommandList),
3842 h->cmd_pool, h->cmd_pool_dhandle);
3843 if (h->errinfo_pool)
3844 pci_free_consistent(h->pdev,
3845 h->nr_cmds * sizeof(struct ErrorInfo),
3847 h->errinfo_pool_dhandle);
3848 free_irq(h->intr[PERF_MODE_INT], h);
3851 h->busy_initializing = 0;
3856 static void hpsa_flush_cache(struct ctlr_info *h)
3859 struct CommandList *c;
3861 flush_buf = kzalloc(4, GFP_KERNEL);
3865 c = cmd_special_alloc(h);
3867 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
3870 fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
3871 RAID_CTLR_LUNID, TYPE_CMD);
3872 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE);
3873 if (c->err_info->CommandStatus != 0)
3874 dev_warn(&h->pdev->dev,
3875 "error flushing cache on controller\n");
3876 cmd_special_free(h, c);
3881 static void hpsa_shutdown(struct pci_dev *pdev)
3883 struct ctlr_info *h;
3885 h = pci_get_drvdata(pdev);
3886 /* Turn board interrupts off and send the flush cache command
3887 * sendcmd will turn off interrupt, and send the flush...
3888 * To write all data in the battery backed cache to disks
3890 hpsa_flush_cache(h);
3891 h->access.set_intr_mask(h, HPSA_INTR_OFF);
3892 free_irq(h->intr[PERF_MODE_INT], h);
3893 #ifdef CONFIG_PCI_MSI
3895 pci_disable_msix(h->pdev);
3896 else if (h->msi_vector)
3897 pci_disable_msi(h->pdev);
3898 #endif /* CONFIG_PCI_MSI */
3901 static void __devexit hpsa_remove_one(struct pci_dev *pdev)
3903 struct ctlr_info *h;
3905 if (pci_get_drvdata(pdev) == NULL) {
3906 dev_err(&pdev->dev, "unable to remove device \n");
3909 h = pci_get_drvdata(pdev);
3910 hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */
3911 hpsa_shutdown(pdev);
3913 iounmap(h->transtable);
3914 iounmap(h->cfgtable);
3915 hpsa_free_sg_chain_blocks(h);
3916 pci_free_consistent(h->pdev,
3917 h->nr_cmds * sizeof(struct CommandList),
3918 h->cmd_pool, h->cmd_pool_dhandle);
3919 pci_free_consistent(h->pdev,
3920 h->nr_cmds * sizeof(struct ErrorInfo),
3921 h->errinfo_pool, h->errinfo_pool_dhandle);
3922 pci_free_consistent(h->pdev, h->reply_pool_size,
3923 h->reply_pool, h->reply_pool_dhandle);
3924 kfree(h->cmd_pool_bits);
3925 kfree(h->blockFetchTable);
3926 kfree(h->hba_inquiry_data);
3928 * Deliberately omit pci_disable_device(): it does something nasty to
3929 * Smart Array controllers that pci_enable_device does not undo
3931 pci_release_regions(pdev);
3932 pci_set_drvdata(pdev, NULL);
3936 static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
3937 __attribute__((unused)) pm_message_t state)
3942 static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
3947 static struct pci_driver hpsa_pci_driver = {
3949 .probe = hpsa_init_one,
3950 .remove = __devexit_p(hpsa_remove_one),
3951 .id_table = hpsa_pci_device_id, /* id_table */
3952 .shutdown = hpsa_shutdown,
3953 .suspend = hpsa_suspend,
3954 .resume = hpsa_resume,
3957 /* Fill in bucket_map[], given nsgs (the max number of
3958 * scatter gather elements supported) and bucket[],
3959 * which is an array of 8 integers. The bucket[] array
3960 * contains 8 different DMA transfer sizes (in 16
3961 * byte increments) which the controller uses to fetch
3962 * commands. This function fills in bucket_map[], which
3963 * maps a given number of scatter gather elements to one of
3964 * the 8 DMA transfer sizes. The point of it is to allow the
3965 * controller to only do as much DMA as needed to fetch the
3966 * command, with the DMA transfer size encoded in the lower
3967 * bits of the command address.
3969 static void calc_bucket_map(int bucket[], int num_buckets,
3970 int nsgs, int *bucket_map)
3974 /* even a command with 0 SGs requires 4 blocks */
3975 #define MINIMUM_TRANSFER_BLOCKS 4
3976 #define NUM_BUCKETS 8
3977 /* Note, bucket_map must have nsgs+1 entries. */
3978 for (i = 0; i <= nsgs; i++) {
3979 /* Compute size of a command with i SG entries */
3980 size = i + MINIMUM_TRANSFER_BLOCKS;
3981 b = num_buckets; /* Assume the biggest bucket */
3982 /* Find the bucket that is just big enough */
3983 for (j = 0; j < 8; j++) {
3984 if (bucket[j] >= size) {
3989 /* for a command with i SG entries, use bucket b. */
3994 static __devinit void hpsa_enter_performant_mode(struct ctlr_info *h)
3997 unsigned long register_value;
3999 /* This is a bit complicated. There are 8 registers on
4000 * the controller which we write to to tell it 8 different
4001 * sizes of commands which there may be. It's a way of
4002 * reducing the DMA done to fetch each command. Encoded into
4003 * each command's tag are 3 bits which communicate to the controller
4004 * which of the eight sizes that command fits within. The size of
4005 * each command depends on how many scatter gather entries there are.
4006 * Each SG entry requires 16 bytes. The eight registers are programmed
4007 * with the number of 16-byte blocks a command of that size requires.
4008 * The smallest command possible requires 5 such 16 byte blocks.
4009 * the largest command possible requires MAXSGENTRIES + 4 16-byte
4010 * blocks. Note, this only extends to the SG entries contained
4011 * within the command block, and does not extend to chained blocks
4012 * of SG elements. bft[] contains the eight values we write to
4013 * the registers. They are not evenly distributed, but have more
4014 * sizes for small commands, and fewer sizes for larger commands.
4016 int bft[8] = {5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4};
4017 BUILD_BUG_ON(28 > MAXSGENTRIES + 4);
4018 /* 5 = 1 s/g entry or 4k
4019 * 6 = 2 s/g entry or 8k
4020 * 8 = 4 s/g entry or 16k
4021 * 10 = 6 s/g entry or 24k
4024 h->reply_pool_wraparound = 1; /* spec: init to 1 */
4026 /* Controller spec: zero out this buffer. */
4027 memset(h->reply_pool, 0, h->reply_pool_size);
4028 h->reply_pool_head = h->reply_pool;
4030 bft[7] = h->max_sg_entries + 4;
4031 calc_bucket_map(bft, ARRAY_SIZE(bft), 32, h->blockFetchTable);
4032 for (i = 0; i < 8; i++)
4033 writel(bft[i], &h->transtable->BlockFetch[i]);
4035 /* size of controller ring buffer */
4036 writel(h->max_commands, &h->transtable->RepQSize);
4037 writel(1, &h->transtable->RepQCount);
4038 writel(0, &h->transtable->RepQCtrAddrLow32);
4039 writel(0, &h->transtable->RepQCtrAddrHigh32);
4040 writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32);
4041 writel(0, &h->transtable->RepQAddr0High32);
4042 writel(CFGTBL_Trans_Performant,
4043 &(h->cfgtable->HostWrite.TransportRequest));
4044 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
4045 hpsa_wait_for_mode_change_ack(h);
4046 register_value = readl(&(h->cfgtable->TransportActive));
4047 if (!(register_value & CFGTBL_Trans_Performant)) {
4048 dev_warn(&h->pdev->dev, "unable to get board into"
4049 " performant mode\n");
4054 static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
4058 trans_support = readl(&(h->cfgtable->TransportSupport));
4059 if (!(trans_support & PERFORMANT_MODE))
4062 hpsa_get_max_perf_mode_cmds(h);
4063 h->max_sg_entries = 32;
4064 /* Performant mode ring buffer and supporting data structures */
4065 h->reply_pool_size = h->max_commands * sizeof(u64);
4066 h->reply_pool = pci_alloc_consistent(h->pdev, h->reply_pool_size,
4067 &(h->reply_pool_dhandle));
4069 /* Need a block fetch table for performant mode */
4070 h->blockFetchTable = kmalloc(((h->max_sg_entries+1) *
4071 sizeof(u32)), GFP_KERNEL);
4073 if ((h->reply_pool == NULL)
4074 || (h->blockFetchTable == NULL))
4077 hpsa_enter_performant_mode(h);
4079 /* Change the access methods to the performant access methods */
4080 h->access = SA5_performant_access;
4081 h->transMethod = CFGTBL_Trans_Performant;
4087 pci_free_consistent(h->pdev, h->reply_pool_size,
4088 h->reply_pool, h->reply_pool_dhandle);
4089 kfree(h->blockFetchTable);
4093 * This is it. Register the PCI driver information for the cards we control
4094 * the OS will call our registered routines when it finds one of our cards.
4096 static int __init hpsa_init(void)
4098 return pci_register_driver(&hpsa_pci_driver);
4101 static void __exit hpsa_cleanup(void)
4103 pci_unregister_driver(&hpsa_pci_driver);
4106 module_init(hpsa_init);
4107 module_exit(hpsa_cleanup);