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/smp_lock.h>
35 #include <linux/compat.h>
36 #include <linux/blktrace_api.h>
37 #include <linux/uaccess.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/completion.h>
41 #include <linux/moduleparam.h>
42 #include <scsi/scsi.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <scsi/scsi_device.h>
45 #include <scsi/scsi_host.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 "1.0.0"
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_CISSC, 0x103C, 0x3223},
81 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234},
82 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D},
83 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
84 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
85 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
86 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
87 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
88 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324a},
89 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324b},
90 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
91 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
95 MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);
97 /* board_id = Subsystem Device ID & Vendor ID
98 * product = Marketing Name for the board
99 * access = Address of the struct of function pointers
101 static struct board_type products[] = {
102 {0x3223103C, "Smart Array P800", &SA5_access},
103 {0x3234103C, "Smart Array P400", &SA5_access},
104 {0x323d103c, "Smart Array P700M", &SA5_access},
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 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
115 static int number_of_controllers;
117 static irqreturn_t do_hpsa_intr(int irq, void *dev_id);
118 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg);
119 static void start_io(struct ctlr_info *h);
122 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg);
125 static void cmd_free(struct ctlr_info *h, struct CommandList *c);
126 static void cmd_special_free(struct ctlr_info *h, struct CommandList *c);
127 static struct CommandList *cmd_alloc(struct ctlr_info *h);
128 static struct CommandList *cmd_special_alloc(struct ctlr_info *h);
129 static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
130 void *buff, size_t size, u8 page_code, unsigned char *scsi3addr,
133 static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd,
134 void (*done)(struct scsi_cmnd *));
136 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
137 static int hpsa_slave_alloc(struct scsi_device *sdev);
138 static void hpsa_slave_destroy(struct scsi_device *sdev);
140 static ssize_t raid_level_show(struct device *dev,
141 struct device_attribute *attr, char *buf);
142 static ssize_t lunid_show(struct device *dev,
143 struct device_attribute *attr, char *buf);
144 static ssize_t unique_id_show(struct device *dev,
145 struct device_attribute *attr, char *buf);
146 static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno);
147 static ssize_t host_store_rescan(struct device *dev,
148 struct device_attribute *attr, const char *buf, size_t count);
149 static int check_for_unit_attention(struct ctlr_info *h,
150 struct CommandList *c);
151 static void check_ioctl_unit_attention(struct ctlr_info *h,
152 struct CommandList *c);
154 static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
155 static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
156 static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
157 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
159 static struct device_attribute *hpsa_sdev_attrs[] = {
160 &dev_attr_raid_level,
166 static struct device_attribute *hpsa_shost_attrs[] = {
171 static struct scsi_host_template hpsa_driver_template = {
172 .module = THIS_MODULE,
175 .queuecommand = hpsa_scsi_queue_command,
178 .sg_tablesize = MAXSGENTRIES,
180 .use_clustering = ENABLE_CLUSTERING,
181 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
183 .slave_alloc = hpsa_slave_alloc,
184 .slave_destroy = hpsa_slave_destroy,
186 .compat_ioctl = hpsa_compat_ioctl,
188 .sdev_attrs = hpsa_sdev_attrs,
189 .shost_attrs = hpsa_shost_attrs,
192 static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
194 unsigned long *priv = shost_priv(sdev->host);
195 return (struct ctlr_info *) *priv;
198 static struct task_struct *hpsa_scan_thread;
199 static DEFINE_MUTEX(hpsa_scan_mutex);
200 static LIST_HEAD(hpsa_scan_q);
201 static int hpsa_scan_func(void *data);
204 * add_to_scan_list() - add controller to rescan queue
205 * @h: Pointer to the controller.
207 * Adds the controller to the rescan queue if not already on the queue.
209 * returns 1 if added to the queue, 0 if skipped (could be on the
210 * queue already, or the controller could be initializing or shutting
213 static int add_to_scan_list(struct ctlr_info *h)
215 struct ctlr_info *test_h;
219 if (h->busy_initializing)
223 * If we don't get the lock, it means the driver is unloading
224 * and there's no point in scheduling a new scan.
226 if (!mutex_trylock(&h->busy_shutting_down))
229 mutex_lock(&hpsa_scan_mutex);
230 list_for_each_entry(test_h, &hpsa_scan_q, scan_list) {
236 if (!found && !h->busy_scanning) {
237 INIT_COMPLETION(h->scan_wait);
238 list_add_tail(&h->scan_list, &hpsa_scan_q);
241 mutex_unlock(&hpsa_scan_mutex);
242 mutex_unlock(&h->busy_shutting_down);
248 * remove_from_scan_list() - remove controller from rescan queue
249 * @h: Pointer to the controller.
251 * Removes the controller from the rescan queue if present. Blocks if
252 * the controller is currently conducting a rescan. The controller
253 * can be in one of three states:
254 * 1. Doesn't need a scan
255 * 2. On the scan list, but not scanning yet (we remove it)
256 * 3. Busy scanning (and not on the list). In this case we want to wait for
257 * the scan to complete to make sure the scanning thread for this
258 * controller is completely idle.
260 static void remove_from_scan_list(struct ctlr_info *h)
262 struct ctlr_info *test_h, *tmp_h;
264 mutex_lock(&hpsa_scan_mutex);
265 list_for_each_entry_safe(test_h, tmp_h, &hpsa_scan_q, scan_list) {
266 if (test_h == h) { /* state 2. */
267 list_del(&h->scan_list);
268 complete_all(&h->scan_wait);
269 mutex_unlock(&hpsa_scan_mutex);
273 if (h->busy_scanning) { /* state 3. */
274 mutex_unlock(&hpsa_scan_mutex);
275 wait_for_completion(&h->scan_wait);
276 } else { /* state 1, nothing to do. */
277 mutex_unlock(&hpsa_scan_mutex);
281 /* hpsa_scan_func() - kernel thread used to rescan controllers
284 * A kernel thread used scan for drive topology changes on
285 * controllers. The thread processes only one controller at a time
286 * using a queue. Controllers are added to the queue using
287 * add_to_scan_list() and removed from the queue either after done
288 * processing or using remove_from_scan_list().
292 static int hpsa_scan_func(__attribute__((unused)) void *data)
298 set_current_state(TASK_INTERRUPTIBLE);
300 if (kthread_should_stop())
304 mutex_lock(&hpsa_scan_mutex);
305 if (list_empty(&hpsa_scan_q)) {
306 mutex_unlock(&hpsa_scan_mutex);
309 h = list_entry(hpsa_scan_q.next, struct ctlr_info,
311 list_del(&h->scan_list);
312 h->busy_scanning = 1;
313 mutex_unlock(&hpsa_scan_mutex);
314 host_no = h->scsi_host ? h->scsi_host->host_no : -1;
315 hpsa_update_scsi_devices(h, host_no);
316 complete_all(&h->scan_wait);
317 mutex_lock(&hpsa_scan_mutex);
318 h->busy_scanning = 0;
319 mutex_unlock(&hpsa_scan_mutex);
325 static int check_for_unit_attention(struct ctlr_info *h,
326 struct CommandList *c)
328 if (c->err_info->SenseInfo[2] != UNIT_ATTENTION)
331 switch (c->err_info->SenseInfo[12]) {
333 dev_warn(&h->pdev->dev, "hpsa%d: a state change "
334 "detected, command retried\n", h->ctlr);
337 dev_warn(&h->pdev->dev, "hpsa%d: LUN failure "
338 "detected, action required\n", h->ctlr);
340 case REPORT_LUNS_CHANGED:
341 dev_warn(&h->pdev->dev, "hpsa%d: report LUN data "
342 "changed\n", h->ctlr);
344 * Here, we could call add_to_scan_list and wake up the scan thread,
345 * except that it's quite likely that we will get more than one
346 * REPORT_LUNS_CHANGED condition in quick succession, which means
347 * that those which occur after the first one will likely happen
348 * *during* the hpsa_scan_thread's rescan. And the rescan code is not
349 * robust enough to restart in the middle, undoing what it has already
350 * done, and it's not clear that it's even possible to do this, since
351 * part of what it does is notify the SCSI mid layer, which starts
352 * doing it's own i/o to read partition tables and so on, and the
353 * driver doesn't have visibility to know what might need undoing.
354 * In any event, if possible, it is horribly complicated to get right
355 * so we just don't do it for now.
357 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
361 dev_warn(&h->pdev->dev, "hpsa%d: a power on "
362 "or device reset detected\n", h->ctlr);
364 case UNIT_ATTENTION_CLEARED:
365 dev_warn(&h->pdev->dev, "hpsa%d: unit attention "
366 "cleared by another initiator\n", h->ctlr);
369 dev_warn(&h->pdev->dev, "hpsa%d: unknown "
370 "unit attention detected\n", h->ctlr);
376 static ssize_t host_store_rescan(struct device *dev,
377 struct device_attribute *attr,
378 const char *buf, size_t count)
381 struct Scsi_Host *shost = class_to_shost(dev);
382 unsigned long *priv = shost_priv(shost);
383 h = (struct ctlr_info *) *priv;
384 if (add_to_scan_list(h)) {
385 wake_up_process(hpsa_scan_thread);
386 wait_for_completion_interruptible(&h->scan_wait);
391 /* Enqueuing and dequeuing functions for cmdlists. */
392 static inline void addQ(struct hlist_head *list, struct CommandList *c)
394 hlist_add_head(&c->list, list);
397 static void enqueue_cmd_and_start_io(struct ctlr_info *h,
398 struct CommandList *c)
401 spin_lock_irqsave(&h->lock, flags);
405 spin_unlock_irqrestore(&h->lock, flags);
408 static inline void removeQ(struct CommandList *c)
410 if (WARN_ON(hlist_unhashed(&c->list)))
412 hlist_del_init(&c->list);
415 static inline int is_hba_lunid(unsigned char scsi3addr[])
417 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
420 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
422 return (scsi3addr[3] & 0xC0) == 0x40;
425 static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
428 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
430 static ssize_t raid_level_show(struct device *dev,
431 struct device_attribute *attr, char *buf)
434 unsigned char rlevel;
436 struct scsi_device *sdev;
437 struct hpsa_scsi_dev_t *hdev;
440 sdev = to_scsi_device(dev);
441 h = sdev_to_hba(sdev);
442 spin_lock_irqsave(&h->lock, flags);
443 hdev = sdev->hostdata;
445 spin_unlock_irqrestore(&h->lock, flags);
449 /* Is this even a logical drive? */
450 if (!is_logical_dev_addr_mode(hdev->scsi3addr)) {
451 spin_unlock_irqrestore(&h->lock, flags);
452 l = snprintf(buf, PAGE_SIZE, "N/A\n");
456 rlevel = hdev->raid_level;
457 spin_unlock_irqrestore(&h->lock, flags);
458 if (rlevel > RAID_UNKNOWN)
459 rlevel = RAID_UNKNOWN;
460 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
464 static ssize_t lunid_show(struct device *dev,
465 struct device_attribute *attr, char *buf)
468 struct scsi_device *sdev;
469 struct hpsa_scsi_dev_t *hdev;
471 unsigned char lunid[8];
473 sdev = to_scsi_device(dev);
474 h = sdev_to_hba(sdev);
475 spin_lock_irqsave(&h->lock, flags);
476 hdev = sdev->hostdata;
478 spin_unlock_irqrestore(&h->lock, flags);
481 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
482 spin_unlock_irqrestore(&h->lock, flags);
483 return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
484 lunid[0], lunid[1], lunid[2], lunid[3],
485 lunid[4], lunid[5], lunid[6], lunid[7]);
488 static ssize_t unique_id_show(struct device *dev,
489 struct device_attribute *attr, char *buf)
492 struct scsi_device *sdev;
493 struct hpsa_scsi_dev_t *hdev;
495 unsigned char sn[16];
497 sdev = to_scsi_device(dev);
498 h = sdev_to_hba(sdev);
499 spin_lock_irqsave(&h->lock, flags);
500 hdev = sdev->hostdata;
502 spin_unlock_irqrestore(&h->lock, flags);
505 memcpy(sn, hdev->device_id, sizeof(sn));
506 spin_unlock_irqrestore(&h->lock, flags);
507 return snprintf(buf, 16 * 2 + 2,
508 "%02X%02X%02X%02X%02X%02X%02X%02X"
509 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
510 sn[0], sn[1], sn[2], sn[3],
511 sn[4], sn[5], sn[6], sn[7],
512 sn[8], sn[9], sn[10], sn[11],
513 sn[12], sn[13], sn[14], sn[15]);
516 static int hpsa_find_target_lun(struct ctlr_info *h,
517 unsigned char scsi3addr[], int bus, int *target, int *lun)
519 /* finds an unused bus, target, lun for a new physical device
520 * assumes h->devlock is held
523 DECLARE_BITMAP(lun_taken, HPSA_MAX_SCSI_DEVS_PER_HBA);
525 memset(&lun_taken[0], 0, HPSA_MAX_SCSI_DEVS_PER_HBA >> 3);
527 for (i = 0; i < h->ndevices; i++) {
528 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
529 set_bit(h->dev[i]->target, lun_taken);
532 for (i = 0; i < HPSA_MAX_SCSI_DEVS_PER_HBA; i++) {
533 if (!test_bit(i, lun_taken)) {
544 /* Add an entry into h->dev[] array. */
545 static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno,
546 struct hpsa_scsi_dev_t *device,
547 struct hpsa_scsi_dev_t *added[], int *nadded)
549 /* assumes h->devlock is held */
552 unsigned char addr1[8], addr2[8];
553 struct hpsa_scsi_dev_t *sd;
555 if (n >= HPSA_MAX_SCSI_DEVS_PER_HBA) {
556 dev_err(&h->pdev->dev, "too many devices, some will be "
561 /* physical devices do not have lun or target assigned until now. */
562 if (device->lun != -1)
563 /* Logical device, lun is already assigned. */
566 /* If this device a non-zero lun of a multi-lun device
567 * byte 4 of the 8-byte LUN addr will contain the logical
568 * unit no, zero otherise.
570 if (device->scsi3addr[4] == 0) {
571 /* This is not a non-zero lun of a multi-lun device */
572 if (hpsa_find_target_lun(h, device->scsi3addr,
573 device->bus, &device->target, &device->lun) != 0)
578 /* This is a non-zero lun of a multi-lun device.
579 * Search through our list and find the device which
580 * has the same 8 byte LUN address, excepting byte 4.
581 * Assign the same bus and target for this new LUN.
582 * Use the logical unit number from the firmware.
584 memcpy(addr1, device->scsi3addr, 8);
586 for (i = 0; i < n; i++) {
588 memcpy(addr2, sd->scsi3addr, 8);
590 /* differ only in byte 4? */
591 if (memcmp(addr1, addr2, 8) == 0) {
592 device->bus = sd->bus;
593 device->target = sd->target;
594 device->lun = device->scsi3addr[4];
598 if (device->lun == -1) {
599 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
600 " suspect firmware bug or unsupported hardware "
609 added[*nadded] = device;
612 /* initially, (before registering with scsi layer) we don't
613 * know our hostno and we don't want to print anything first
614 * time anyway (the scsi layer's inquiries will show that info)
616 /* if (hostno != -1) */
617 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n",
618 scsi_device_type(device->devtype), hostno,
619 device->bus, device->target, device->lun);
623 /* Remove an entry from h->dev[] array. */
624 static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry,
625 struct hpsa_scsi_dev_t *removed[], int *nremoved)
627 /* assumes h->devlock is held */
629 struct hpsa_scsi_dev_t *sd;
631 BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA);
634 removed[*nremoved] = h->dev[entry];
637 for (i = entry; i < h->ndevices-1; i++)
638 h->dev[i] = h->dev[i+1];
640 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n",
641 scsi_device_type(sd->devtype), hostno, sd->bus, sd->target,
645 #define SCSI3ADDR_EQ(a, b) ( \
646 (a)[7] == (b)[7] && \
647 (a)[6] == (b)[6] && \
648 (a)[5] == (b)[5] && \
649 (a)[4] == (b)[4] && \
650 (a)[3] == (b)[3] && \
651 (a)[2] == (b)[2] && \
652 (a)[1] == (b)[1] && \
655 static void fixup_botched_add(struct ctlr_info *h,
656 struct hpsa_scsi_dev_t *added)
658 /* called when scsi_add_device fails in order to re-adjust
659 * h->dev[] to match the mid layer's view.
664 spin_lock_irqsave(&h->lock, flags);
665 for (i = 0; i < h->ndevices; i++) {
666 if (h->dev[i] == added) {
667 for (j = i; j < h->ndevices-1; j++)
668 h->dev[j] = h->dev[j+1];
673 spin_unlock_irqrestore(&h->lock, flags);
677 static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
678 struct hpsa_scsi_dev_t *dev2)
680 if ((is_logical_dev_addr_mode(dev1->scsi3addr) ||
681 (dev1->lun != -1 && dev2->lun != -1)) &&
682 dev1->devtype != 0x0C)
683 return (memcmp(dev1, dev2, sizeof(*dev1)) == 0);
685 /* we compare everything except lun and target as these
686 * are not yet assigned. Compare parts likely
689 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
690 sizeof(dev1->scsi3addr)) != 0)
692 if (memcmp(dev1->device_id, dev2->device_id,
693 sizeof(dev1->device_id)) != 0)
695 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
697 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
699 if (memcmp(dev1->revision, dev2->revision, sizeof(dev1->revision)) != 0)
701 if (dev1->devtype != dev2->devtype)
703 if (dev1->raid_level != dev2->raid_level)
705 if (dev1->bus != dev2->bus)
710 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
711 * and return needle location in *index. If scsi3addr matches, but not
712 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
713 * location in *index. If needle not found, return DEVICE_NOT_FOUND.
715 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
716 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
720 #define DEVICE_NOT_FOUND 0
721 #define DEVICE_CHANGED 1
722 #define DEVICE_SAME 2
723 for (i = 0; i < haystack_size; i++) {
724 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
726 if (device_is_the_same(needle, haystack[i]))
729 return DEVICE_CHANGED;
733 return DEVICE_NOT_FOUND;
736 static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno,
737 struct hpsa_scsi_dev_t *sd[], int nsds)
739 /* sd contains scsi3 addresses and devtypes, and inquiry
740 * data. This function takes what's in sd to be the current
741 * reality and updates h->dev[] to reflect that reality.
743 int i, entry, device_change, changes = 0;
744 struct hpsa_scsi_dev_t *csd;
746 struct hpsa_scsi_dev_t **added, **removed;
747 int nadded, nremoved;
748 struct Scsi_Host *sh = NULL;
750 added = kzalloc(sizeof(*added) * HPSA_MAX_SCSI_DEVS_PER_HBA,
752 removed = kzalloc(sizeof(*removed) * HPSA_MAX_SCSI_DEVS_PER_HBA,
755 if (!added || !removed) {
756 dev_warn(&h->pdev->dev, "out of memory in "
757 "adjust_hpsa_scsi_table\n");
761 spin_lock_irqsave(&h->devlock, flags);
763 /* find any devices in h->dev[] that are not in
764 * sd[] and remove them from h->dev[], and for any
765 * devices which have changed, remove the old device
766 * info and add the new device info.
771 while (i < h->ndevices) {
773 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
774 if (device_change == DEVICE_NOT_FOUND) {
776 hpsa_scsi_remove_entry(h, hostno, i,
778 continue; /* remove ^^^, hence i not incremented */
779 } else if (device_change == DEVICE_CHANGED) {
781 hpsa_scsi_remove_entry(h, hostno, i,
783 (void) hpsa_scsi_add_entry(h, hostno, sd[entry],
785 /* add can't fail, we just removed one. */
786 sd[entry] = NULL; /* prevent it from being freed */
791 /* Now, make sure every device listed in sd[] is also
792 * listed in h->dev[], adding them if they aren't found
795 for (i = 0; i < nsds; i++) {
796 if (!sd[i]) /* if already added above. */
798 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
799 h->ndevices, &entry);
800 if (device_change == DEVICE_NOT_FOUND) {
802 if (hpsa_scsi_add_entry(h, hostno, sd[i],
803 added, &nadded) != 0)
805 sd[i] = NULL; /* prevent from being freed later. */
806 } else if (device_change == DEVICE_CHANGED) {
807 /* should never happen... */
809 dev_warn(&h->pdev->dev,
810 "device unexpectedly changed.\n");
811 /* but if it does happen, we just ignore that device */
814 spin_unlock_irqrestore(&h->devlock, flags);
816 /* Don't notify scsi mid layer of any changes the first time through
817 * (or if there are no changes) scsi_scan_host will do it later the
818 * first time through.
820 if (hostno == -1 || !changes)
824 /* Notify scsi mid layer of any removed devices */
825 for (i = 0; i < nremoved; i++) {
826 struct scsi_device *sdev =
827 scsi_device_lookup(sh, removed[i]->bus,
828 removed[i]->target, removed[i]->lun);
830 scsi_remove_device(sdev);
831 scsi_device_put(sdev);
833 /* We don't expect to get here.
834 * future cmds to this device will get selection
835 * timeout as if the device was gone.
837 dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d "
838 " for removal.", hostno, removed[i]->bus,
839 removed[i]->target, removed[i]->lun);
845 /* Notify scsi mid layer of any added devices */
846 for (i = 0; i < nadded; i++) {
847 if (scsi_add_device(sh, added[i]->bus,
848 added[i]->target, added[i]->lun) == 0)
850 dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, "
851 "device not added.\n", hostno, added[i]->bus,
852 added[i]->target, added[i]->lun);
853 /* now we have to remove it from h->dev,
854 * since it didn't get added to scsi mid layer
856 fixup_botched_add(h, added[i]);
865 * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t *
866 * Assume's h->devlock is held.
868 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
869 int bus, int target, int lun)
872 struct hpsa_scsi_dev_t *sd;
874 for (i = 0; i < h->ndevices; i++) {
876 if (sd->bus == bus && sd->target == target && sd->lun == lun)
882 /* link sdev->hostdata to our per-device structure. */
883 static int hpsa_slave_alloc(struct scsi_device *sdev)
885 struct hpsa_scsi_dev_t *sd;
889 h = sdev_to_hba(sdev);
890 spin_lock_irqsave(&h->devlock, flags);
891 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
892 sdev_id(sdev), sdev->lun);
895 spin_unlock_irqrestore(&h->devlock, flags);
899 static void hpsa_slave_destroy(struct scsi_device *sdev)
904 static void hpsa_scsi_setup(struct ctlr_info *h)
908 spin_lock_init(&h->devlock);
911 static void complete_scsi_command(struct CommandList *cp,
912 int timeout, u32 tag)
914 struct scsi_cmnd *cmd;
916 struct ErrorInfo *ei;
918 unsigned char sense_key;
919 unsigned char asc; /* additional sense code */
920 unsigned char ascq; /* additional sense code qualifier */
923 cmd = (struct scsi_cmnd *) cp->scsi_cmd;
926 scsi_dma_unmap(cmd); /* undo the DMA mappings */
928 cmd->result = (DID_OK << 16); /* host byte */
929 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
930 cmd->result |= (ei->ScsiStatus << 1);
932 /* copy the sense data whether we need to or not. */
933 memcpy(cmd->sense_buffer, ei->SenseInfo,
934 ei->SenseLen > SCSI_SENSE_BUFFERSIZE ?
935 SCSI_SENSE_BUFFERSIZE :
937 scsi_set_resid(cmd, ei->ResidualCnt);
939 if (ei->CommandStatus == 0) {
945 /* an error has occurred */
946 switch (ei->CommandStatus) {
948 case CMD_TARGET_STATUS:
949 if (ei->ScsiStatus) {
951 sense_key = 0xf & ei->SenseInfo[2];
952 /* Get additional sense code */
953 asc = ei->SenseInfo[12];
954 /* Get addition sense code qualifier */
955 ascq = ei->SenseInfo[13];
958 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
959 if (check_for_unit_attention(h, cp)) {
960 cmd->result = DID_SOFT_ERROR << 16;
963 if (sense_key == ILLEGAL_REQUEST) {
965 * SCSI REPORT_LUNS is commonly unsupported on
966 * Smart Array. Suppress noisy complaint.
968 if (cp->Request.CDB[0] == REPORT_LUNS)
971 /* If ASC/ASCQ indicate Logical Unit
972 * Not Supported condition,
974 if ((asc == 0x25) && (ascq == 0x0)) {
975 dev_warn(&h->pdev->dev, "cp %p "
976 "has check condition\n", cp);
981 if (sense_key == NOT_READY) {
982 /* If Sense is Not Ready, Logical Unit
983 * Not ready, Manual Intervention
986 if ((asc == 0x04) && (ascq == 0x03)) {
987 cmd->result = DID_NO_CONNECT << 16;
988 dev_warn(&h->pdev->dev, "cp %p "
989 "has check condition: unit "
991 "intervention required\n", cp);
997 /* Must be some other type of check condition */
998 dev_warn(&h->pdev->dev, "cp %p has check condition: "
1000 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1001 "Returning result: 0x%x, "
1002 "cmd=[%02x %02x %02x %02x %02x "
1003 "%02x %02x %02x %02x %02x]\n",
1004 cp, sense_key, asc, ascq,
1006 cmd->cmnd[0], cmd->cmnd[1],
1007 cmd->cmnd[2], cmd->cmnd[3],
1008 cmd->cmnd[4], cmd->cmnd[5],
1009 cmd->cmnd[6], cmd->cmnd[7],
1010 cmd->cmnd[8], cmd->cmnd[9]);
1015 /* Problem was not a check condition
1016 * Pass it up to the upper layers...
1018 if (ei->ScsiStatus) {
1019 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
1020 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1021 "Returning result: 0x%x\n",
1023 sense_key, asc, ascq,
1025 } else { /* scsi status is zero??? How??? */
1026 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
1027 "Returning no connection.\n", cp),
1029 /* Ordinarily, this case should never happen,
1030 * but there is a bug in some released firmware
1031 * revisions that allows it to happen if, for
1032 * example, a 4100 backplane loses power and
1033 * the tape drive is in it. We assume that
1034 * it's a fatal error of some kind because we
1035 * can't show that it wasn't. We will make it
1036 * look like selection timeout since that is
1037 * the most common reason for this to occur,
1038 * and it's severe enough.
1041 cmd->result = DID_NO_CONNECT << 16;
1045 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
1047 case CMD_DATA_OVERRUN:
1048 dev_warn(&h->pdev->dev, "cp %p has"
1049 " completed with data overrun "
1053 /* print_bytes(cp, sizeof(*cp), 1, 0);
1055 /* We get CMD_INVALID if you address a non-existent device
1056 * instead of a selection timeout (no response). You will
1057 * see this if you yank out a drive, then try to access it.
1058 * This is kind of a shame because it means that any other
1059 * CMD_INVALID (e.g. driver bug) will get interpreted as a
1060 * missing target. */
1061 cmd->result = DID_NO_CONNECT << 16;
1064 case CMD_PROTOCOL_ERR:
1065 dev_warn(&h->pdev->dev, "cp %p has "
1066 "protocol error \n", cp);
1068 case CMD_HARDWARE_ERR:
1069 cmd->result = DID_ERROR << 16;
1070 dev_warn(&h->pdev->dev, "cp %p had hardware error\n", cp);
1072 case CMD_CONNECTION_LOST:
1073 cmd->result = DID_ERROR << 16;
1074 dev_warn(&h->pdev->dev, "cp %p had connection lost\n", cp);
1077 cmd->result = DID_ABORT << 16;
1078 dev_warn(&h->pdev->dev, "cp %p was aborted with status 0x%x\n",
1079 cp, ei->ScsiStatus);
1081 case CMD_ABORT_FAILED:
1082 cmd->result = DID_ERROR << 16;
1083 dev_warn(&h->pdev->dev, "cp %p reports abort failed\n", cp);
1085 case CMD_UNSOLICITED_ABORT:
1086 cmd->result = DID_ABORT << 16;
1087 dev_warn(&h->pdev->dev, "cp %p aborted do to an unsolicited "
1091 cmd->result = DID_TIME_OUT << 16;
1092 dev_warn(&h->pdev->dev, "cp %p timedout\n", cp);
1095 cmd->result = DID_ERROR << 16;
1096 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
1097 cp, ei->CommandStatus);
1099 cmd->scsi_done(cmd);
1103 static int hpsa_scsi_detect(struct ctlr_info *h)
1105 struct Scsi_Host *sh;
1108 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
1115 sh->max_channel = 3;
1116 sh->max_cmd_len = MAX_COMMAND_SIZE;
1117 sh->max_lun = HPSA_MAX_LUN;
1118 sh->max_id = HPSA_MAX_LUN;
1120 sh->hostdata[0] = (unsigned long) h;
1121 sh->irq = h->intr[SIMPLE_MODE_INT];
1122 sh->unique_id = sh->irq;
1123 error = scsi_add_host(sh, &h->pdev->dev);
1130 dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_add_host"
1131 " failed for controller %d\n", h->ctlr);
1135 dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_host_alloc"
1136 " failed for controller %d\n", h->ctlr);
1140 static void hpsa_pci_unmap(struct pci_dev *pdev,
1141 struct CommandList *c, int sg_used, int data_direction)
1144 union u64bit addr64;
1146 for (i = 0; i < sg_used; i++) {
1147 addr64.val32.lower = c->SG[i].Addr.lower;
1148 addr64.val32.upper = c->SG[i].Addr.upper;
1149 pci_unmap_single(pdev, (dma_addr_t) addr64.val, c->SG[i].Len,
1154 static void hpsa_map_one(struct pci_dev *pdev,
1155 struct CommandList *cp,
1162 if (buflen == 0 || data_direction == PCI_DMA_NONE) {
1163 cp->Header.SGList = 0;
1164 cp->Header.SGTotal = 0;
1168 addr64 = (u64) pci_map_single(pdev, buf, buflen, data_direction);
1169 cp->SG[0].Addr.lower =
1170 (u32) (addr64 & (u64) 0x00000000FFFFFFFF);
1171 cp->SG[0].Addr.upper =
1172 (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF);
1173 cp->SG[0].Len = buflen;
1174 cp->Header.SGList = (u8) 1; /* no. SGs contig in this cmd */
1175 cp->Header.SGTotal = (u16) 1; /* total sgs in this cmd list */
1178 static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
1179 struct CommandList *c)
1181 DECLARE_COMPLETION_ONSTACK(wait);
1184 enqueue_cmd_and_start_io(h, c);
1185 wait_for_completion(&wait);
1188 static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
1189 struct CommandList *c, int data_direction)
1191 int retry_count = 0;
1194 memset(c->err_info, 0, sizeof(c->err_info));
1195 hpsa_scsi_do_simple_cmd_core(h, c);
1197 } while (check_for_unit_attention(h, c) && retry_count <= 3);
1198 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
1201 static void hpsa_scsi_interpret_error(struct CommandList *cp)
1203 struct ErrorInfo *ei;
1204 struct device *d = &cp->h->pdev->dev;
1207 switch (ei->CommandStatus) {
1208 case CMD_TARGET_STATUS:
1209 dev_warn(d, "cmd %p has completed with errors\n", cp);
1210 dev_warn(d, "cmd %p has SCSI Status = %x\n", cp,
1212 if (ei->ScsiStatus == 0)
1213 dev_warn(d, "SCSI status is abnormally zero. "
1214 "(probably indicates selection timeout "
1215 "reported incorrectly due to a known "
1216 "firmware bug, circa July, 2001.)\n");
1218 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
1219 dev_info(d, "UNDERRUN\n");
1221 case CMD_DATA_OVERRUN:
1222 dev_warn(d, "cp %p has completed with data overrun\n", cp);
1225 /* controller unfortunately reports SCSI passthru's
1226 * to non-existent targets as invalid commands.
1228 dev_warn(d, "cp %p is reported invalid (probably means "
1229 "target device no longer present)\n", cp);
1230 /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0);
1234 case CMD_PROTOCOL_ERR:
1235 dev_warn(d, "cp %p has protocol error \n", cp);
1237 case CMD_HARDWARE_ERR:
1238 /* cmd->result = DID_ERROR << 16; */
1239 dev_warn(d, "cp %p had hardware error\n", cp);
1241 case CMD_CONNECTION_LOST:
1242 dev_warn(d, "cp %p had connection lost\n", cp);
1245 dev_warn(d, "cp %p was aborted\n", cp);
1247 case CMD_ABORT_FAILED:
1248 dev_warn(d, "cp %p reports abort failed\n", cp);
1250 case CMD_UNSOLICITED_ABORT:
1251 dev_warn(d, "cp %p aborted due to an unsolicited abort\n", cp);
1254 dev_warn(d, "cp %p timed out\n", cp);
1257 dev_warn(d, "cp %p returned unknown status %x\n", cp,
1262 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
1263 unsigned char page, unsigned char *buf,
1264 unsigned char bufsize)
1267 struct CommandList *c;
1268 struct ErrorInfo *ei;
1270 c = cmd_special_alloc(h);
1272 if (c == NULL) { /* trouble... */
1273 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
1277 fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD);
1278 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
1280 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
1281 hpsa_scsi_interpret_error(c);
1284 cmd_special_free(h, c);
1288 static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr)
1291 struct CommandList *c;
1292 struct ErrorInfo *ei;
1294 c = cmd_special_alloc(h);
1296 if (c == NULL) { /* trouble... */
1297 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
1301 fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, scsi3addr, TYPE_MSG);
1302 hpsa_scsi_do_simple_cmd_core(h, c);
1303 /* no unmap needed here because no data xfer. */
1306 if (ei->CommandStatus != 0) {
1307 hpsa_scsi_interpret_error(c);
1310 cmd_special_free(h, c);
1314 static void hpsa_get_raid_level(struct ctlr_info *h,
1315 unsigned char *scsi3addr, unsigned char *raid_level)
1320 *raid_level = RAID_UNKNOWN;
1321 buf = kzalloc(64, GFP_KERNEL);
1324 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0xC1, buf, 64);
1326 *raid_level = buf[8];
1327 if (*raid_level > RAID_UNKNOWN)
1328 *raid_level = RAID_UNKNOWN;
1333 /* Get the device id from inquiry page 0x83 */
1334 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
1335 unsigned char *device_id, int buflen)
1342 buf = kzalloc(64, GFP_KERNEL);
1345 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64);
1347 memcpy(device_id, &buf[8], buflen);
1352 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
1353 struct ReportLUNdata *buf, int bufsize,
1354 int extended_response)
1357 struct CommandList *c;
1358 unsigned char scsi3addr[8];
1359 struct ErrorInfo *ei;
1361 c = cmd_special_alloc(h);
1362 if (c == NULL) { /* trouble... */
1363 dev_err(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
1366 /* address the controller */
1367 memset(scsi3addr, 0, sizeof(scsi3addr));
1368 fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
1369 buf, bufsize, 0, scsi3addr, TYPE_CMD);
1370 if (extended_response)
1371 c->Request.CDB[1] = extended_response;
1372 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
1374 if (ei->CommandStatus != 0 &&
1375 ei->CommandStatus != CMD_DATA_UNDERRUN) {
1376 hpsa_scsi_interpret_error(c);
1379 cmd_special_free(h, c);
1383 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
1384 struct ReportLUNdata *buf,
1385 int bufsize, int extended_response)
1387 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, extended_response);
1390 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
1391 struct ReportLUNdata *buf, int bufsize)
1393 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
1396 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
1397 int bus, int target, int lun)
1400 device->target = target;
1404 static int hpsa_update_device_info(struct ctlr_info *h,
1405 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device)
1407 #define OBDR_TAPE_INQ_SIZE 49
1408 unsigned char *inq_buff;
1410 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
1414 /* Do an inquiry to the device to see what it is. */
1415 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
1416 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
1417 /* Inquiry failed (msg printed already) */
1418 dev_err(&h->pdev->dev,
1419 "hpsa_update_device_info: inquiry failed\n");
1423 /* As a side effect, record the firmware version number
1424 * if we happen to be talking to the RAID controller.
1426 if (is_hba_lunid(scsi3addr))
1427 memcpy(h->firm_ver, &inq_buff[32], 4);
1429 this_device->devtype = (inq_buff[0] & 0x1f);
1430 memcpy(this_device->scsi3addr, scsi3addr, 8);
1431 memcpy(this_device->vendor, &inq_buff[8],
1432 sizeof(this_device->vendor));
1433 memcpy(this_device->model, &inq_buff[16],
1434 sizeof(this_device->model));
1435 memcpy(this_device->revision, &inq_buff[32],
1436 sizeof(this_device->revision));
1437 memset(this_device->device_id, 0,
1438 sizeof(this_device->device_id));
1439 hpsa_get_device_id(h, scsi3addr, this_device->device_id,
1440 sizeof(this_device->device_id));
1442 if (this_device->devtype == TYPE_DISK &&
1443 is_logical_dev_addr_mode(scsi3addr))
1444 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
1446 this_device->raid_level = RAID_UNKNOWN;
1456 static unsigned char *msa2xxx_model[] = {
1464 static int is_msa2xxx(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
1468 for (i = 0; msa2xxx_model[i]; i++)
1469 if (strncmp(device->model, msa2xxx_model[i],
1470 strlen(msa2xxx_model[i])) == 0)
1475 /* Helper function to assign bus, target, lun mapping of devices.
1476 * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical
1477 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
1478 * Logical drive target and lun are assigned at this time, but
1479 * physical device lun and target assignment are deferred (assigned
1480 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
1482 static void figure_bus_target_lun(struct ctlr_info *h,
1483 u8 *lunaddrbytes, int *bus, int *target, int *lun,
1484 struct hpsa_scsi_dev_t *device)
1489 if (is_logical_dev_addr_mode(lunaddrbytes)) {
1490 /* logical device */
1491 memcpy(&lunid, lunaddrbytes, sizeof(lunid));
1492 lunid = le32_to_cpu(lunid);
1494 if (is_msa2xxx(h, device)) {
1496 *target = (lunid >> 16) & 0x3fff;
1497 *lun = lunid & 0x00ff;
1501 *target = lunid & 0x3fff;
1504 /* physical device */
1505 if (is_hba_lunid(lunaddrbytes))
1510 *lun = -1; /* we will fill these in later. */
1515 * If there is no lun 0 on a target, linux won't find any devices.
1516 * For the MSA2xxx boxes, we have to manually detect the enclosure
1517 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
1518 * it for some reason. *tmpdevice is the target we're adding,
1519 * this_device is a pointer into the current element of currentsd[]
1520 * that we're building up in update_scsi_devices(), below.
1521 * lunzerobits is a bitmap that tracks which targets already have a
1523 * Returns 1 if an enclosure was added, 0 if not.
1525 static int add_msa2xxx_enclosure_device(struct ctlr_info *h,
1526 struct hpsa_scsi_dev_t *tmpdevice,
1527 struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes,
1528 int bus, int target, int lun, unsigned long lunzerobits[],
1529 int *nmsa2xxx_enclosures)
1531 unsigned char scsi3addr[8];
1533 if (test_bit(target, lunzerobits))
1534 return 0; /* There is already a lun 0 on this target. */
1536 if (!is_logical_dev_addr_mode(lunaddrbytes))
1537 return 0; /* It's the logical targets that may lack lun 0. */
1539 if (!is_msa2xxx(h, tmpdevice))
1540 return 0; /* It's only the MSA2xxx that have this problem. */
1542 if (lun == 0) /* if lun is 0, then obviously we have a lun 0. */
1545 if (is_hba_lunid(scsi3addr))
1546 return 0; /* Don't add the RAID controller here. */
1548 #define MAX_MSA2XXX_ENCLOSURES 32
1549 if (*nmsa2xxx_enclosures >= MAX_MSA2XXX_ENCLOSURES) {
1550 dev_warn(&h->pdev->dev, "Maximum number of MSA2XXX "
1551 "enclosures exceeded. Check your hardware "
1556 memset(scsi3addr, 0, 8);
1557 scsi3addr[3] = target;
1558 if (hpsa_update_device_info(h, scsi3addr, this_device))
1560 (*nmsa2xxx_enclosures)++;
1561 hpsa_set_bus_target_lun(this_device, bus, target, 0);
1562 set_bit(target, lunzerobits);
1567 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
1568 * logdev. The number of luns in physdev and logdev are returned in
1569 * *nphysicals and *nlogicals, respectively.
1570 * Returns 0 on success, -1 otherwise.
1572 static int hpsa_gather_lun_info(struct ctlr_info *h,
1574 struct ReportLUNdata *physdev, u32 *nphysicals,
1575 struct ReportLUNdata *logdev, u32 *nlogicals)
1577 if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, 0)) {
1578 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
1581 memcpy(nphysicals, &physdev->LUNListLength[0], sizeof(*nphysicals));
1582 *nphysicals = be32_to_cpu(*nphysicals) / 8;
1583 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
1584 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded."
1585 " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
1586 *nphysicals - HPSA_MAX_PHYS_LUN);
1587 *nphysicals = HPSA_MAX_PHYS_LUN;
1589 if (hpsa_scsi_do_report_log_luns(h, logdev, reportlunsize)) {
1590 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
1593 memcpy(nlogicals, &logdev->LUNListLength[0], sizeof(*nlogicals));
1594 *nlogicals = be32_to_cpu(*nlogicals) / 8;
1595 /* Reject Logicals in excess of our max capability. */
1596 if (*nlogicals > HPSA_MAX_LUN) {
1597 dev_warn(&h->pdev->dev,
1598 "maximum logical LUNs (%d) exceeded. "
1599 "%d LUNs ignored.\n", HPSA_MAX_LUN,
1600 *nlogicals - HPSA_MAX_LUN);
1601 *nlogicals = HPSA_MAX_LUN;
1603 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
1604 dev_warn(&h->pdev->dev,
1605 "maximum logical + physical LUNs (%d) exceeded. "
1606 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
1607 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
1608 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
1613 static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
1615 /* the idea here is we could get notified
1616 * that some devices have changed, so we do a report
1617 * physical luns and report logical luns cmd, and adjust
1618 * our list of devices accordingly.
1620 * The scsi3addr's of devices won't change so long as the
1621 * adapter is not reset. That means we can rescan and
1622 * tell which devices we already know about, vs. new
1623 * devices, vs. disappearing devices.
1625 struct ReportLUNdata *physdev_list = NULL;
1626 struct ReportLUNdata *logdev_list = NULL;
1627 unsigned char *inq_buff = NULL;
1630 u32 ndev_allocated = 0;
1631 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
1633 int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8;
1634 int i, nmsa2xxx_enclosures, ndevs_to_allocate;
1635 int bus, target, lun;
1636 DECLARE_BITMAP(lunzerobits, HPSA_MAX_TARGETS_PER_CTLR);
1638 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_SCSI_DEVS_PER_HBA,
1640 physdev_list = kzalloc(reportlunsize, GFP_KERNEL);
1641 logdev_list = kzalloc(reportlunsize, GFP_KERNEL);
1642 inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
1643 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
1645 if (!currentsd || !physdev_list || !logdev_list ||
1646 !inq_buff || !tmpdevice) {
1647 dev_err(&h->pdev->dev, "out of memory\n");
1650 memset(lunzerobits, 0, sizeof(lunzerobits));
1652 if (hpsa_gather_lun_info(h, reportlunsize, physdev_list, &nphysicals,
1653 logdev_list, &nlogicals))
1656 /* We might see up to 32 MSA2xxx enclosures, actually 8 of them
1657 * but each of them 4 times through different paths. The plus 1
1658 * is for the RAID controller.
1660 ndevs_to_allocate = nphysicals + nlogicals + MAX_MSA2XXX_ENCLOSURES + 1;
1662 /* Allocate the per device structures */
1663 for (i = 0; i < ndevs_to_allocate; i++) {
1664 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
1665 if (!currentsd[i]) {
1666 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n",
1667 __FILE__, __LINE__);
1673 /* adjust our table of devices */
1674 nmsa2xxx_enclosures = 0;
1675 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
1678 /* Figure out where the LUN ID info is coming from */
1680 lunaddrbytes = &physdev_list->LUN[i][0];
1682 if (i < nphysicals + nlogicals)
1684 &logdev_list->LUN[i-nphysicals][0];
1685 else /* jam in the RAID controller at the end */
1686 lunaddrbytes = RAID_CTLR_LUNID;
1688 /* skip masked physical devices. */
1689 if (lunaddrbytes[3] & 0xC0 && i < nphysicals)
1692 /* Get device type, vendor, model, device id */
1693 if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice))
1694 continue; /* skip it if we can't talk to it. */
1695 figure_bus_target_lun(h, lunaddrbytes, &bus, &target, &lun,
1697 this_device = currentsd[ncurrent];
1700 * For the msa2xxx boxes, we have to insert a LUN 0 which
1701 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
1702 * is nonetheless an enclosure device there. We have to
1703 * present that otherwise linux won't find anything if
1704 * there is no lun 0.
1706 if (add_msa2xxx_enclosure_device(h, tmpdevice, this_device,
1707 lunaddrbytes, bus, target, lun, lunzerobits,
1708 &nmsa2xxx_enclosures)) {
1710 this_device = currentsd[ncurrent];
1713 *this_device = *tmpdevice;
1714 hpsa_set_bus_target_lun(this_device, bus, target, lun);
1716 switch (this_device->devtype) {
1718 /* We don't *really* support actual CD-ROM devices,
1719 * just "One Button Disaster Recovery" tape drive
1720 * which temporarily pretends to be a CD-ROM drive.
1721 * So we check that the device is really an OBDR tape
1722 * device by checking for "$DR-10" in bytes 43-48 of
1726 #define OBDR_TAPE_SIG "$DR-10"
1727 strncpy(obdr_sig, &inq_buff[43], 6);
1729 if (strncmp(obdr_sig, OBDR_TAPE_SIG, 6) != 0)
1730 /* Not OBDR device, ignore it. */
1741 case TYPE_MEDIUM_CHANGER:
1745 /* Only present the Smartarray HBA as a RAID controller.
1746 * If it's a RAID controller other than the HBA itself
1747 * (an external RAID controller, MSA500 or similar)
1750 if (!is_hba_lunid(lunaddrbytes))
1757 if (ncurrent >= HPSA_MAX_SCSI_DEVS_PER_HBA)
1760 adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent);
1763 for (i = 0; i < ndev_allocated; i++)
1764 kfree(currentsd[i]);
1767 kfree(physdev_list);
1771 /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
1772 * dma mapping and fills in the scatter gather entries of the
1775 static int hpsa_scatter_gather(struct pci_dev *pdev,
1776 struct CommandList *cp,
1777 struct scsi_cmnd *cmd)
1780 struct scatterlist *sg;
1784 BUG_ON(scsi_sg_count(cmd) > MAXSGENTRIES);
1786 use_sg = scsi_dma_map(cmd);
1791 goto sglist_finished;
1793 scsi_for_each_sg(cmd, sg, use_sg, i) {
1794 addr64 = (u64) sg_dma_address(sg);
1795 len = sg_dma_len(sg);
1796 cp->SG[i].Addr.lower =
1797 (u32) (addr64 & (u64) 0x00000000FFFFFFFF);
1798 cp->SG[i].Addr.upper =
1799 (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF);
1800 cp->SG[i].Len = len;
1801 cp->SG[i].Ext = 0; /* we are not chaining */
1806 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */
1807 cp->Header.SGTotal = (u16) use_sg; /* total sgs in this cmd list */
1812 static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd,
1813 void (*done)(struct scsi_cmnd *))
1815 struct ctlr_info *h;
1816 struct hpsa_scsi_dev_t *dev;
1817 unsigned char scsi3addr[8];
1818 struct CommandList *c;
1819 unsigned long flags;
1821 /* Get the ptr to our adapter structure out of cmd->host. */
1822 h = sdev_to_hba(cmd->device);
1823 dev = cmd->device->hostdata;
1825 cmd->result = DID_NO_CONNECT << 16;
1829 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
1831 /* Need a lock as this is being allocated from the pool */
1832 spin_lock_irqsave(&h->lock, flags);
1834 spin_unlock_irqrestore(&h->lock, flags);
1835 if (c == NULL) { /* trouble... */
1836 dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n");
1837 return SCSI_MLQUEUE_HOST_BUSY;
1840 /* Fill in the command list header */
1842 cmd->scsi_done = done; /* save this for use by completion code */
1844 /* save c in case we have to abort it */
1845 cmd->host_scribble = (unsigned char *) c;
1847 c->cmd_type = CMD_SCSI;
1849 c->Header.ReplyQueue = 0; /* unused in simple mode */
1850 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
1851 c->Header.Tag.lower = c->busaddr; /* Use k. address of cmd as tag */
1853 /* Fill in the request block... */
1855 c->Request.Timeout = 0;
1856 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
1857 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
1858 c->Request.CDBLen = cmd->cmd_len;
1859 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
1860 c->Request.Type.Type = TYPE_CMD;
1861 c->Request.Type.Attribute = ATTR_SIMPLE;
1862 switch (cmd->sc_data_direction) {
1864 c->Request.Type.Direction = XFER_WRITE;
1866 case DMA_FROM_DEVICE:
1867 c->Request.Type.Direction = XFER_READ;
1870 c->Request.Type.Direction = XFER_NONE;
1872 case DMA_BIDIRECTIONAL:
1873 /* This can happen if a buggy application does a scsi passthru
1874 * and sets both inlen and outlen to non-zero. ( see
1875 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
1878 c->Request.Type.Direction = XFER_RSVD;
1879 /* This is technically wrong, and hpsa controllers should
1880 * reject it with CMD_INVALID, which is the most correct
1881 * response, but non-fibre backends appear to let it
1882 * slide by, and give the same results as if this field
1883 * were set correctly. Either way is acceptable for
1884 * our purposes here.
1890 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
1891 cmd->sc_data_direction);
1896 if (hpsa_scatter_gather(h->pdev, c, cmd) < 0) { /* Fill SG list */
1898 return SCSI_MLQUEUE_HOST_BUSY;
1900 enqueue_cmd_and_start_io(h, c);
1901 /* the cmd'll come back via intr handler in complete_scsi_command() */
1905 static void hpsa_unregister_scsi(struct ctlr_info *h)
1907 /* we are being forcibly unloaded, and may not refuse. */
1908 scsi_remove_host(h->scsi_host);
1909 scsi_host_put(h->scsi_host);
1910 h->scsi_host = NULL;
1913 static int hpsa_register_scsi(struct ctlr_info *h)
1917 hpsa_update_scsi_devices(h, -1);
1918 rc = hpsa_scsi_detect(h);
1920 dev_err(&h->pdev->dev, "hpsa_register_scsi: failed"
1921 " hpsa_scsi_detect(), rc is %d\n", rc);
1925 static int wait_for_device_to_become_ready(struct ctlr_info *h,
1926 unsigned char lunaddr[])
1930 int waittime = 1; /* seconds */
1931 struct CommandList *c;
1933 c = cmd_special_alloc(h);
1935 dev_warn(&h->pdev->dev, "out of memory in "
1936 "wait_for_device_to_become_ready.\n");
1940 /* Send test unit ready until device ready, or give up. */
1941 while (count < HPSA_TUR_RETRY_LIMIT) {
1943 /* Wait for a bit. do this first, because if we send
1944 * the TUR right away, the reset will just abort it.
1946 msleep(1000 * waittime);
1949 /* Increase wait time with each try, up to a point. */
1950 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
1951 waittime = waittime * 2;
1953 /* Send the Test Unit Ready */
1954 fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, lunaddr, TYPE_CMD);
1955 hpsa_scsi_do_simple_cmd_core(h, c);
1956 /* no unmap needed here because no data xfer. */
1958 if (c->err_info->CommandStatus == CMD_SUCCESS)
1961 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
1962 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
1963 (c->err_info->SenseInfo[2] == NO_SENSE ||
1964 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
1967 dev_warn(&h->pdev->dev, "waiting %d secs "
1968 "for device to become ready.\n", waittime);
1969 rc = 1; /* device not ready. */
1973 dev_warn(&h->pdev->dev, "giving up on device.\n");
1975 dev_warn(&h->pdev->dev, "device is ready.\n");
1977 cmd_special_free(h, c);
1981 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
1982 * complaining. Doing a host- or bus-reset can't do anything good here.
1984 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
1987 struct ctlr_info *h;
1988 struct hpsa_scsi_dev_t *dev;
1990 /* find the controller to which the command to be aborted was sent */
1991 h = sdev_to_hba(scsicmd->device);
1992 if (h == NULL) /* paranoia */
1994 dev_warn(&h->pdev->dev, "resetting drive\n");
1996 dev = scsicmd->device->hostdata;
1998 dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: "
1999 "device lookup failed.\n");
2002 /* send a reset to the SCSI LUN which the command was sent to */
2003 rc = hpsa_send_reset(h, dev->scsi3addr);
2004 if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0)
2007 dev_warn(&h->pdev->dev, "resetting device failed.\n");
2012 * For operations that cannot sleep, a command block is allocated at init,
2013 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
2014 * which ones are free or in use. Lock must be held when calling this.
2015 * cmd_free() is the complement.
2017 static struct CommandList *cmd_alloc(struct ctlr_info *h)
2019 struct CommandList *c;
2021 union u64bit temp64;
2022 dma_addr_t cmd_dma_handle, err_dma_handle;
2025 i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds);
2026 if (i == h->nr_cmds)
2028 } while (test_and_set_bit
2029 (i & (BITS_PER_LONG - 1),
2030 h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0);
2031 c = h->cmd_pool + i;
2032 memset(c, 0, sizeof(*c));
2033 cmd_dma_handle = h->cmd_pool_dhandle
2035 c->err_info = h->errinfo_pool + i;
2036 memset(c->err_info, 0, sizeof(*c->err_info));
2037 err_dma_handle = h->errinfo_pool_dhandle
2038 + i * sizeof(*c->err_info);
2043 INIT_HLIST_NODE(&c->list);
2044 c->busaddr = (u32) cmd_dma_handle;
2045 temp64.val = (u64) err_dma_handle;
2046 c->ErrDesc.Addr.lower = temp64.val32.lower;
2047 c->ErrDesc.Addr.upper = temp64.val32.upper;
2048 c->ErrDesc.Len = sizeof(*c->err_info);
2054 /* For operations that can wait for kmalloc to possibly sleep,
2055 * this routine can be called. Lock need not be held to call
2056 * cmd_special_alloc. cmd_special_free() is the complement.
2058 static struct CommandList *cmd_special_alloc(struct ctlr_info *h)
2060 struct CommandList *c;
2061 union u64bit temp64;
2062 dma_addr_t cmd_dma_handle, err_dma_handle;
2064 c = pci_alloc_consistent(h->pdev, sizeof(*c), &cmd_dma_handle);
2067 memset(c, 0, sizeof(*c));
2071 c->err_info = pci_alloc_consistent(h->pdev, sizeof(*c->err_info),
2074 if (c->err_info == NULL) {
2075 pci_free_consistent(h->pdev,
2076 sizeof(*c), c, cmd_dma_handle);
2079 memset(c->err_info, 0, sizeof(*c->err_info));
2081 INIT_HLIST_NODE(&c->list);
2082 c->busaddr = (u32) cmd_dma_handle;
2083 temp64.val = (u64) err_dma_handle;
2084 c->ErrDesc.Addr.lower = temp64.val32.lower;
2085 c->ErrDesc.Addr.upper = temp64.val32.upper;
2086 c->ErrDesc.Len = sizeof(*c->err_info);
2092 static void cmd_free(struct ctlr_info *h, struct CommandList *c)
2096 i = c - h->cmd_pool;
2097 clear_bit(i & (BITS_PER_LONG - 1),
2098 h->cmd_pool_bits + (i / BITS_PER_LONG));
2102 static void cmd_special_free(struct ctlr_info *h, struct CommandList *c)
2104 union u64bit temp64;
2106 temp64.val32.lower = c->ErrDesc.Addr.lower;
2107 temp64.val32.upper = c->ErrDesc.Addr.upper;
2108 pci_free_consistent(h->pdev, sizeof(*c->err_info),
2109 c->err_info, (dma_addr_t) temp64.val);
2110 pci_free_consistent(h->pdev, sizeof(*c),
2111 c, (dma_addr_t) c->busaddr);
2114 #ifdef CONFIG_COMPAT
2116 static int do_ioctl(struct scsi_device *dev, int cmd, void *arg)
2121 ret = hpsa_ioctl(dev, cmd, arg);
2126 static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg);
2127 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
2128 int cmd, void *arg);
2130 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg)
2133 case CCISS_GETPCIINFO:
2134 case CCISS_GETINTINFO:
2135 case CCISS_SETINTINFO:
2136 case CCISS_GETNODENAME:
2137 case CCISS_SETNODENAME:
2138 case CCISS_GETHEARTBEAT:
2139 case CCISS_GETBUSTYPES:
2140 case CCISS_GETFIRMVER:
2141 case CCISS_GETDRIVVER:
2142 case CCISS_REVALIDVOLS:
2143 case CCISS_DEREGDISK:
2144 case CCISS_REGNEWDISK:
2146 case CCISS_RESCANDISK:
2147 case CCISS_GETLUNINFO:
2148 return do_ioctl(dev, cmd, arg);
2150 case CCISS_PASSTHRU32:
2151 return hpsa_ioctl32_passthru(dev, cmd, arg);
2152 case CCISS_BIG_PASSTHRU32:
2153 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
2156 return -ENOIOCTLCMD;
2160 static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg)
2162 IOCTL32_Command_struct __user *arg32 =
2163 (IOCTL32_Command_struct __user *) arg;
2164 IOCTL_Command_struct arg64;
2165 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
2170 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
2171 sizeof(arg64.LUN_info));
2172 err |= copy_from_user(&arg64.Request, &arg32->Request,
2173 sizeof(arg64.Request));
2174 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
2175 sizeof(arg64.error_info));
2176 err |= get_user(arg64.buf_size, &arg32->buf_size);
2177 err |= get_user(cp, &arg32->buf);
2178 arg64.buf = compat_ptr(cp);
2179 err |= copy_to_user(p, &arg64, sizeof(arg64));
2184 err = do_ioctl(dev, CCISS_PASSTHRU, (void *)p);
2187 err |= copy_in_user(&arg32->error_info, &p->error_info,
2188 sizeof(arg32->error_info));
2194 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
2197 BIG_IOCTL32_Command_struct __user *arg32 =
2198 (BIG_IOCTL32_Command_struct __user *) arg;
2199 BIG_IOCTL_Command_struct arg64;
2200 BIG_IOCTL_Command_struct __user *p =
2201 compat_alloc_user_space(sizeof(arg64));
2206 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
2207 sizeof(arg64.LUN_info));
2208 err |= copy_from_user(&arg64.Request, &arg32->Request,
2209 sizeof(arg64.Request));
2210 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
2211 sizeof(arg64.error_info));
2212 err |= get_user(arg64.buf_size, &arg32->buf_size);
2213 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
2214 err |= get_user(cp, &arg32->buf);
2215 arg64.buf = compat_ptr(cp);
2216 err |= copy_to_user(p, &arg64, sizeof(arg64));
2221 err = do_ioctl(dev, CCISS_BIG_PASSTHRU, (void *)p);
2224 err |= copy_in_user(&arg32->error_info, &p->error_info,
2225 sizeof(arg32->error_info));
2232 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
2234 struct hpsa_pci_info pciinfo;
2238 pciinfo.domain = pci_domain_nr(h->pdev->bus);
2239 pciinfo.bus = h->pdev->bus->number;
2240 pciinfo.dev_fn = h->pdev->devfn;
2241 pciinfo.board_id = h->board_id;
2242 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
2247 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
2249 DriverVer_type DriverVer;
2250 unsigned char vmaj, vmin, vsubmin;
2253 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
2254 &vmaj, &vmin, &vsubmin);
2256 dev_info(&h->pdev->dev, "driver version string '%s' "
2257 "unrecognized.", HPSA_DRIVER_VERSION);
2262 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
2265 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
2270 static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
2272 IOCTL_Command_struct iocommand;
2273 struct CommandList *c;
2275 union u64bit temp64;
2279 if (!capable(CAP_SYS_RAWIO))
2281 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
2283 if ((iocommand.buf_size < 1) &&
2284 (iocommand.Request.Type.Direction != XFER_NONE)) {
2287 if (iocommand.buf_size > 0) {
2288 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
2292 if (iocommand.Request.Type.Direction == XFER_WRITE) {
2293 /* Copy the data into the buffer we created */
2294 if (copy_from_user(buff, iocommand.buf, iocommand.buf_size)) {
2299 memset(buff, 0, iocommand.buf_size);
2300 c = cmd_special_alloc(h);
2305 /* Fill in the command type */
2306 c->cmd_type = CMD_IOCTL_PEND;
2307 /* Fill in Command Header */
2308 c->Header.ReplyQueue = 0; /* unused in simple mode */
2309 if (iocommand.buf_size > 0) { /* buffer to fill */
2310 c->Header.SGList = 1;
2311 c->Header.SGTotal = 1;
2312 } else { /* no buffers to fill */
2313 c->Header.SGList = 0;
2314 c->Header.SGTotal = 0;
2316 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
2317 /* use the kernel address the cmd block for tag */
2318 c->Header.Tag.lower = c->busaddr;
2320 /* Fill in Request block */
2321 memcpy(&c->Request, &iocommand.Request,
2322 sizeof(c->Request));
2324 /* Fill in the scatter gather information */
2325 if (iocommand.buf_size > 0) {
2326 temp64.val = pci_map_single(h->pdev, buff,
2327 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
2328 c->SG[0].Addr.lower = temp64.val32.lower;
2329 c->SG[0].Addr.upper = temp64.val32.upper;
2330 c->SG[0].Len = iocommand.buf_size;
2331 c->SG[0].Ext = 0; /* we are not chaining*/
2333 hpsa_scsi_do_simple_cmd_core(h, c);
2334 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
2335 check_ioctl_unit_attention(h, c);
2337 /* Copy the error information out */
2338 memcpy(&iocommand.error_info, c->err_info,
2339 sizeof(iocommand.error_info));
2340 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
2342 cmd_special_free(h, c);
2346 if (iocommand.Request.Type.Direction == XFER_READ) {
2347 /* Copy the data out of the buffer we created */
2348 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
2350 cmd_special_free(h, c);
2355 cmd_special_free(h, c);
2359 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
2361 BIG_IOCTL_Command_struct *ioc;
2362 struct CommandList *c;
2363 unsigned char **buff = NULL;
2364 int *buff_size = NULL;
2365 union u64bit temp64;
2371 BYTE __user *data_ptr;
2375 if (!capable(CAP_SYS_RAWIO))
2377 ioc = (BIG_IOCTL_Command_struct *)
2378 kmalloc(sizeof(*ioc), GFP_KERNEL);
2383 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
2387 if ((ioc->buf_size < 1) &&
2388 (ioc->Request.Type.Direction != XFER_NONE)) {
2392 /* Check kmalloc limits using all SGs */
2393 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
2397 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
2401 buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL);
2406 buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL);
2411 left = ioc->buf_size;
2412 data_ptr = ioc->buf;
2414 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
2415 buff_size[sg_used] = sz;
2416 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
2417 if (buff[sg_used] == NULL) {
2421 if (ioc->Request.Type.Direction == XFER_WRITE) {
2422 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
2427 memset(buff[sg_used], 0, sz);
2432 c = cmd_special_alloc(h);
2437 c->cmd_type = CMD_IOCTL_PEND;
2438 c->Header.ReplyQueue = 0;
2440 if (ioc->buf_size > 0) {
2441 c->Header.SGList = sg_used;
2442 c->Header.SGTotal = sg_used;
2444 c->Header.SGList = 0;
2445 c->Header.SGTotal = 0;
2447 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
2448 c->Header.Tag.lower = c->busaddr;
2449 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
2450 if (ioc->buf_size > 0) {
2452 for (i = 0; i < sg_used; i++) {
2453 temp64.val = pci_map_single(h->pdev, buff[i],
2454 buff_size[i], PCI_DMA_BIDIRECTIONAL);
2455 c->SG[i].Addr.lower = temp64.val32.lower;
2456 c->SG[i].Addr.upper = temp64.val32.upper;
2457 c->SG[i].Len = buff_size[i];
2458 /* we are not chaining */
2462 hpsa_scsi_do_simple_cmd_core(h, c);
2463 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
2464 check_ioctl_unit_attention(h, c);
2465 /* Copy the error information out */
2466 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
2467 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
2468 cmd_special_free(h, c);
2472 if (ioc->Request.Type.Direction == XFER_READ) {
2473 /* Copy the data out of the buffer we created */
2474 BYTE __user *ptr = ioc->buf;
2475 for (i = 0; i < sg_used; i++) {
2476 if (copy_to_user(ptr, buff[i], buff_size[i])) {
2477 cmd_special_free(h, c);
2481 ptr += buff_size[i];
2484 cmd_special_free(h, c);
2488 for (i = 0; i < sg_used; i++)
2497 static void check_ioctl_unit_attention(struct ctlr_info *h,
2498 struct CommandList *c)
2500 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
2501 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
2502 (void) check_for_unit_attention(h, c);
2507 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg)
2509 struct ctlr_info *h;
2510 void __user *argp = (void __user *)arg;
2512 h = sdev_to_hba(dev);
2515 case CCISS_DEREGDISK:
2516 case CCISS_REGNEWDISK:
2518 hpsa_update_scsi_devices(h, dev->host->host_no);
2520 case CCISS_GETPCIINFO:
2521 return hpsa_getpciinfo_ioctl(h, argp);
2522 case CCISS_GETDRIVVER:
2523 return hpsa_getdrivver_ioctl(h, argp);
2524 case CCISS_PASSTHRU:
2525 return hpsa_passthru_ioctl(h, argp);
2526 case CCISS_BIG_PASSTHRU:
2527 return hpsa_big_passthru_ioctl(h, argp);
2533 static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
2534 void *buff, size_t size, u8 page_code, unsigned char *scsi3addr,
2537 int pci_dir = XFER_NONE;
2539 c->cmd_type = CMD_IOCTL_PEND;
2540 c->Header.ReplyQueue = 0;
2541 if (buff != NULL && size > 0) {
2542 c->Header.SGList = 1;
2543 c->Header.SGTotal = 1;
2545 c->Header.SGList = 0;
2546 c->Header.SGTotal = 0;
2548 c->Header.Tag.lower = c->busaddr;
2549 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
2551 c->Request.Type.Type = cmd_type;
2552 if (cmd_type == TYPE_CMD) {
2555 /* are we trying to read a vital product page */
2556 if (page_code != 0) {
2557 c->Request.CDB[1] = 0x01;
2558 c->Request.CDB[2] = page_code;
2560 c->Request.CDBLen = 6;
2561 c->Request.Type.Attribute = ATTR_SIMPLE;
2562 c->Request.Type.Direction = XFER_READ;
2563 c->Request.Timeout = 0;
2564 c->Request.CDB[0] = HPSA_INQUIRY;
2565 c->Request.CDB[4] = size & 0xFF;
2567 case HPSA_REPORT_LOG:
2568 case HPSA_REPORT_PHYS:
2569 /* Talking to controller so It's a physical command
2570 mode = 00 target = 0. Nothing to write.
2572 c->Request.CDBLen = 12;
2573 c->Request.Type.Attribute = ATTR_SIMPLE;
2574 c->Request.Type.Direction = XFER_READ;
2575 c->Request.Timeout = 0;
2576 c->Request.CDB[0] = cmd;
2577 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
2578 c->Request.CDB[7] = (size >> 16) & 0xFF;
2579 c->Request.CDB[8] = (size >> 8) & 0xFF;
2580 c->Request.CDB[9] = size & 0xFF;
2583 case HPSA_READ_CAPACITY:
2584 c->Request.CDBLen = 10;
2585 c->Request.Type.Attribute = ATTR_SIMPLE;
2586 c->Request.Type.Direction = XFER_READ;
2587 c->Request.Timeout = 0;
2588 c->Request.CDB[0] = cmd;
2590 case HPSA_CACHE_FLUSH:
2591 c->Request.CDBLen = 12;
2592 c->Request.Type.Attribute = ATTR_SIMPLE;
2593 c->Request.Type.Direction = XFER_WRITE;
2594 c->Request.Timeout = 0;
2595 c->Request.CDB[0] = BMIC_WRITE;
2596 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
2598 case TEST_UNIT_READY:
2599 c->Request.CDBLen = 6;
2600 c->Request.Type.Attribute = ATTR_SIMPLE;
2601 c->Request.Type.Direction = XFER_NONE;
2602 c->Request.Timeout = 0;
2605 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
2609 } else if (cmd_type == TYPE_MSG) {
2612 case HPSA_DEVICE_RESET_MSG:
2613 c->Request.CDBLen = 16;
2614 c->Request.Type.Type = 1; /* It is a MSG not a CMD */
2615 c->Request.Type.Attribute = ATTR_SIMPLE;
2616 c->Request.Type.Direction = XFER_NONE;
2617 c->Request.Timeout = 0; /* Don't time out */
2618 c->Request.CDB[0] = 0x01; /* RESET_MSG is 0x01 */
2619 c->Request.CDB[1] = 0x03; /* Reset target above */
2620 /* If bytes 4-7 are zero, it means reset the */
2622 c->Request.CDB[4] = 0x00;
2623 c->Request.CDB[5] = 0x00;
2624 c->Request.CDB[6] = 0x00;
2625 c->Request.CDB[7] = 0x00;
2629 dev_warn(&h->pdev->dev, "unknown message type %d\n",
2634 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
2638 switch (c->Request.Type.Direction) {
2640 pci_dir = PCI_DMA_FROMDEVICE;
2643 pci_dir = PCI_DMA_TODEVICE;
2646 pci_dir = PCI_DMA_NONE;
2649 pci_dir = PCI_DMA_BIDIRECTIONAL;
2652 hpsa_map_one(h->pdev, c, buff, size, pci_dir);
2658 * Map (physical) PCI mem into (virtual) kernel space
2660 static void __iomem *remap_pci_mem(ulong base, ulong size)
2662 ulong page_base = ((ulong) base) & PAGE_MASK;
2663 ulong page_offs = ((ulong) base) - page_base;
2664 void __iomem *page_remapped = ioremap(page_base, page_offs + size);
2666 return page_remapped ? (page_remapped + page_offs) : NULL;
2669 /* Takes cmds off the submission queue and sends them to the hardware,
2670 * then puts them on the queue of cmds waiting for completion.
2672 static void start_io(struct ctlr_info *h)
2674 struct CommandList *c;
2676 while (!hlist_empty(&h->reqQ)) {
2677 c = hlist_entry(h->reqQ.first, struct CommandList, list);
2678 /* can't do anything if fifo is full */
2679 if ((h->access.fifo_full(h))) {
2680 dev_warn(&h->pdev->dev, "fifo full\n");
2684 /* Get the first entry from the Request Q */
2688 /* Tell the controller execute command */
2689 h->access.submit_command(h, c);
2691 /* Put job onto the completed Q */
2696 static inline unsigned long get_next_completion(struct ctlr_info *h)
2698 return h->access.command_completed(h);
2701 static inline int interrupt_pending(struct ctlr_info *h)
2703 return h->access.intr_pending(h);
2706 static inline long interrupt_not_for_us(struct ctlr_info *h)
2708 return ((h->access.intr_pending(h) == 0) ||
2709 (h->interrupts_enabled == 0));
2712 static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
2715 if (unlikely(tag_index >= h->nr_cmds)) {
2716 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
2722 static inline void finish_cmd(struct CommandList *c, u32 raw_tag)
2725 if (likely(c->cmd_type == CMD_SCSI))
2726 complete_scsi_command(c, 0, raw_tag);
2727 else if (c->cmd_type == CMD_IOCTL_PEND)
2728 complete(c->waiting);
2731 static irqreturn_t do_hpsa_intr(int irq, void *dev_id)
2733 struct ctlr_info *h = dev_id;
2734 struct CommandList *c;
2735 unsigned long flags;
2736 u32 raw_tag, tag, tag_index;
2737 struct hlist_node *tmp;
2739 if (interrupt_not_for_us(h))
2741 spin_lock_irqsave(&h->lock, flags);
2742 while (interrupt_pending(h)) {
2743 while ((raw_tag = get_next_completion(h)) != FIFO_EMPTY) {
2744 if (likely(HPSA_TAG_CONTAINS_INDEX(raw_tag))) {
2745 tag_index = HPSA_TAG_TO_INDEX(raw_tag);
2746 if (bad_tag(h, tag_index, raw_tag))
2748 c = h->cmd_pool + tag_index;
2749 finish_cmd(c, raw_tag);
2752 tag = HPSA_TAG_DISCARD_ERROR_BITS(raw_tag);
2754 hlist_for_each_entry(c, tmp, &h->cmpQ, list) {
2755 if (c->busaddr == tag) {
2756 finish_cmd(c, raw_tag);
2762 spin_unlock_irqrestore(&h->lock, flags);
2766 /* Send a message CDB to the firmware. */
2767 static __devinit int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
2771 struct CommandListHeader CommandHeader;
2772 struct RequestBlock Request;
2773 struct ErrDescriptor ErrorDescriptor;
2775 struct Command *cmd;
2776 static const size_t cmd_sz = sizeof(*cmd) +
2777 sizeof(cmd->ErrorDescriptor);
2779 uint32_t paddr32, tag;
2780 void __iomem *vaddr;
2783 vaddr = pci_ioremap_bar(pdev, 0);
2787 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
2788 * CCISS commands, so they must be allocated from the lower 4GiB of
2791 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2797 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
2803 /* This must fit, because of the 32-bit consistent DMA mask. Also,
2804 * although there's no guarantee, we assume that the address is at
2805 * least 4-byte aligned (most likely, it's page-aligned).
2809 cmd->CommandHeader.ReplyQueue = 0;
2810 cmd->CommandHeader.SGList = 0;
2811 cmd->CommandHeader.SGTotal = 0;
2812 cmd->CommandHeader.Tag.lower = paddr32;
2813 cmd->CommandHeader.Tag.upper = 0;
2814 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
2816 cmd->Request.CDBLen = 16;
2817 cmd->Request.Type.Type = TYPE_MSG;
2818 cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE;
2819 cmd->Request.Type.Direction = XFER_NONE;
2820 cmd->Request.Timeout = 0; /* Don't time out */
2821 cmd->Request.CDB[0] = opcode;
2822 cmd->Request.CDB[1] = type;
2823 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
2824 cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(*cmd);
2825 cmd->ErrorDescriptor.Addr.upper = 0;
2826 cmd->ErrorDescriptor.Len = sizeof(struct ErrorInfo);
2828 writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET);
2830 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
2831 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
2832 if (HPSA_TAG_DISCARD_ERROR_BITS(tag) == paddr32)
2834 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
2839 /* we leak the DMA buffer here ... no choice since the controller could
2840 * still complete the command.
2842 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
2843 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
2848 pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
2850 if (tag & HPSA_ERROR_BIT) {
2851 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
2856 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
2861 #define hpsa_soft_reset_controller(p) hpsa_message(p, 1, 0)
2862 #define hpsa_noop(p) hpsa_message(p, 3, 0)
2864 static __devinit int hpsa_reset_msi(struct pci_dev *pdev)
2866 /* the #defines are stolen from drivers/pci/msi.h. */
2867 #define msi_control_reg(base) (base + PCI_MSI_FLAGS)
2868 #define PCI_MSIX_FLAGS_ENABLE (1 << 15)
2873 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
2875 pci_read_config_word(pdev, msi_control_reg(pos), &control);
2876 if (control & PCI_MSI_FLAGS_ENABLE) {
2877 dev_info(&pdev->dev, "resetting MSI\n");
2878 pci_write_config_word(pdev, msi_control_reg(pos),
2879 control & ~PCI_MSI_FLAGS_ENABLE);
2883 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
2885 pci_read_config_word(pdev, msi_control_reg(pos), &control);
2886 if (control & PCI_MSIX_FLAGS_ENABLE) {
2887 dev_info(&pdev->dev, "resetting MSI-X\n");
2888 pci_write_config_word(pdev, msi_control_reg(pos),
2889 control & ~PCI_MSIX_FLAGS_ENABLE);
2896 /* This does a hard reset of the controller using PCI power management
2899 static __devinit int hpsa_hard_reset_controller(struct pci_dev *pdev)
2901 u16 pmcsr, saved_config_space[32];
2904 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
2906 /* This is very nearly the same thing as
2908 * pci_save_state(pci_dev);
2909 * pci_set_power_state(pci_dev, PCI_D3hot);
2910 * pci_set_power_state(pci_dev, PCI_D0);
2911 * pci_restore_state(pci_dev);
2913 * but we can't use these nice canned kernel routines on
2914 * kexec, because they also check the MSI/MSI-X state in PCI
2915 * configuration space and do the wrong thing when it is
2916 * set/cleared. Also, the pci_save/restore_state functions
2917 * violate the ordering requirements for restoring the
2918 * configuration space from the CCISS document (see the
2919 * comment below). So we roll our own ....
2922 for (i = 0; i < 32; i++)
2923 pci_read_config_word(pdev, 2*i, &saved_config_space[i]);
2925 pos = pci_find_capability(pdev, PCI_CAP_ID_PM);
2928 "hpsa_reset_controller: PCI PM not supported\n");
2932 /* Quoting from the Open CISS Specification: "The Power
2933 * Management Control/Status Register (CSR) controls the power
2934 * state of the device. The normal operating state is D0,
2935 * CSR=00h. The software off state is D3, CSR=03h. To reset
2936 * the controller, place the interface device in D3 then to
2937 * D0, this causes a secondary PCI reset which will reset the
2941 /* enter the D3hot power management state */
2942 pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr);
2943 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
2945 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
2949 /* enter the D0 power management state */
2950 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
2952 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
2956 /* Restore the PCI configuration space. The Open CISS
2957 * Specification says, "Restore the PCI Configuration
2958 * Registers, offsets 00h through 60h. It is important to
2959 * restore the command register, 16-bits at offset 04h,
2960 * last. Do not restore the configuration status register,
2961 * 16-bits at offset 06h." Note that the offset is 2*i.
2963 for (i = 0; i < 32; i++) {
2964 if (i == 2 || i == 3)
2966 pci_write_config_word(pdev, 2*i, saved_config_space[i]);
2969 pci_write_config_word(pdev, 4, saved_config_space[2]);
2975 * We cannot read the structure directly, for portability we must use
2977 * This is for debug only.
2980 static void print_cfg_table(struct device *dev, struct CfgTable *tb)
2985 dev_info(dev, "Controller Configuration information\n");
2986 dev_info(dev, "------------------------------------\n");
2987 for (i = 0; i < 4; i++)
2988 temp_name[i] = readb(&(tb->Signature[i]));
2989 temp_name[4] = '\0';
2990 dev_info(dev, " Signature = %s\n", temp_name);
2991 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
2992 dev_info(dev, " Transport methods supported = 0x%x\n",
2993 readl(&(tb->TransportSupport)));
2994 dev_info(dev, " Transport methods active = 0x%x\n",
2995 readl(&(tb->TransportActive)));
2996 dev_info(dev, " Requested transport Method = 0x%x\n",
2997 readl(&(tb->HostWrite.TransportRequest)));
2998 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
2999 readl(&(tb->HostWrite.CoalIntDelay)));
3000 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
3001 readl(&(tb->HostWrite.CoalIntCount)));
3002 dev_info(dev, " Max outstanding commands = 0x%d\n",
3003 readl(&(tb->CmdsOutMax)));
3004 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
3005 for (i = 0; i < 16; i++)
3006 temp_name[i] = readb(&(tb->ServerName[i]));
3007 temp_name[16] = '\0';
3008 dev_info(dev, " Server Name = %s\n", temp_name);
3009 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
3010 readl(&(tb->HeartBeat)));
3012 #endif /* HPSA_DEBUG */
3014 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
3016 int i, offset, mem_type, bar_type;
3018 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
3021 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
3022 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
3023 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
3026 mem_type = pci_resource_flags(pdev, i) &
3027 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
3029 case PCI_BASE_ADDRESS_MEM_TYPE_32:
3030 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
3031 offset += 4; /* 32 bit */
3033 case PCI_BASE_ADDRESS_MEM_TYPE_64:
3036 default: /* reserved in PCI 2.2 */
3037 dev_warn(&pdev->dev,
3038 "base address is invalid\n");
3043 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
3049 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
3050 * controllers that are capable. If not, we use IO-APIC mode.
3053 static void __devinit hpsa_interrupt_mode(struct ctlr_info *h,
3054 struct pci_dev *pdev, u32 board_id)
3056 #ifdef CONFIG_PCI_MSI
3058 struct msix_entry hpsa_msix_entries[4] = { {0, 0}, {0, 1},
3062 /* Some boards advertise MSI but don't really support it */
3063 if ((board_id == 0x40700E11) ||
3064 (board_id == 0x40800E11) ||
3065 (board_id == 0x40820E11) || (board_id == 0x40830E11))
3066 goto default_int_mode;
3067 if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) {
3068 dev_info(&pdev->dev, "MSIX\n");
3069 err = pci_enable_msix(pdev, hpsa_msix_entries, 4);
3071 h->intr[0] = hpsa_msix_entries[0].vector;
3072 h->intr[1] = hpsa_msix_entries[1].vector;
3073 h->intr[2] = hpsa_msix_entries[2].vector;
3074 h->intr[3] = hpsa_msix_entries[3].vector;
3079 dev_warn(&pdev->dev, "only %d MSI-X vectors "
3080 "available\n", err);
3081 goto default_int_mode;
3083 dev_warn(&pdev->dev, "MSI-X init failed %d\n",
3085 goto default_int_mode;
3088 if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) {
3089 dev_info(&pdev->dev, "MSI\n");
3090 if (!pci_enable_msi(pdev))
3093 dev_warn(&pdev->dev, "MSI init failed\n");
3096 #endif /* CONFIG_PCI_MSI */
3097 /* if we get here we're going to use the default interrupt mode */
3098 h->intr[SIMPLE_MODE_INT] = pdev->irq;
3101 static int hpsa_pci_init(struct ctlr_info *h, struct pci_dev *pdev)
3103 ushort subsystem_vendor_id, subsystem_device_id, command;
3104 u32 board_id, scratchpad = 0;
3107 u64 cfg_base_addr_index;
3108 int i, prod_index, err;
3110 subsystem_vendor_id = pdev->subsystem_vendor;
3111 subsystem_device_id = pdev->subsystem_device;
3112 board_id = (((u32) (subsystem_device_id << 16) & 0xffff0000) |
3113 subsystem_vendor_id);
3115 for (i = 0; i < ARRAY_SIZE(products); i++)
3116 if (board_id == products[i].board_id)
3121 if (prod_index == ARRAY_SIZE(products)) {
3123 if (subsystem_vendor_id != PCI_VENDOR_ID_HP ||
3125 dev_warn(&pdev->dev, "unrecognized board ID:"
3126 " 0x%08lx, ignoring.\n",
3127 (unsigned long) board_id);
3131 /* check to see if controller has been disabled
3132 * BEFORE trying to enable it
3134 (void)pci_read_config_word(pdev, PCI_COMMAND, &command);
3135 if (!(command & 0x02)) {
3136 dev_warn(&pdev->dev, "controller appears to be disabled\n");
3140 err = pci_enable_device(pdev);
3142 dev_warn(&pdev->dev, "unable to enable PCI device\n");
3146 err = pci_request_regions(pdev, "hpsa");
3148 dev_err(&pdev->dev, "cannot obtain PCI resources, aborting\n");
3152 /* If the kernel supports MSI/MSI-X we will try to enable that,
3153 * else we use the IO-APIC interrupt assigned to us by system ROM.
3155 hpsa_interrupt_mode(h, pdev, board_id);
3157 /* find the memory BAR */
3158 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
3159 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM)
3162 if (i == DEVICE_COUNT_RESOURCE) {
3163 dev_warn(&pdev->dev, "no memory BAR found\n");
3165 goto err_out_free_res;
3168 h->paddr = pci_resource_start(pdev, i); /* addressing mode bits
3172 h->vaddr = remap_pci_mem(h->paddr, 0x250);
3174 /* Wait for the board to become ready. */
3175 for (i = 0; i < HPSA_BOARD_READY_ITERATIONS; i++) {
3176 scratchpad = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
3177 if (scratchpad == HPSA_FIRMWARE_READY)
3179 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
3181 if (scratchpad != HPSA_FIRMWARE_READY) {
3182 dev_warn(&pdev->dev, "board not ready, timed out.\n");
3184 goto err_out_free_res;
3187 /* get the address index number */
3188 cfg_base_addr = readl(h->vaddr + SA5_CTCFG_OFFSET);
3189 cfg_base_addr &= (u32) 0x0000ffff;
3190 cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr);
3191 if (cfg_base_addr_index == -1) {
3192 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
3194 goto err_out_free_res;
3197 cfg_offset = readl(h->vaddr + SA5_CTMEM_OFFSET);
3198 h->cfgtable = remap_pci_mem(pci_resource_start(pdev,
3199 cfg_base_addr_index) + cfg_offset,
3200 sizeof(h->cfgtable));
3201 h->board_id = board_id;
3203 /* Query controller for max supported commands: */
3204 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
3206 h->product_name = products[prod_index].product_name;
3207 h->access = *(products[prod_index].access);
3208 /* Allow room for some ioctls */
3209 h->nr_cmds = h->max_commands - 4;
3211 if ((readb(&h->cfgtable->Signature[0]) != 'C') ||
3212 (readb(&h->cfgtable->Signature[1]) != 'I') ||
3213 (readb(&h->cfgtable->Signature[2]) != 'S') ||
3214 (readb(&h->cfgtable->Signature[3]) != 'S')) {
3215 dev_warn(&pdev->dev, "not a valid CISS config table\n");
3217 goto err_out_free_res;
3221 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
3223 prefetch = readl(&(h->cfgtable->SCSI_Prefetch));
3225 writel(prefetch, &(h->cfgtable->SCSI_Prefetch));
3229 /* Disabling DMA prefetch for the P600
3230 * An ASIC bug may result in a prefetch beyond
3233 if (board_id == 0x3225103C) {
3235 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
3236 dma_prefetch |= 0x8000;
3237 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
3240 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
3241 /* Update the field, and then ring the doorbell */
3242 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
3243 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
3245 /* under certain very rare conditions, this can take awhile.
3246 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3247 * as we enter this code.)
3249 for (i = 0; i < MAX_CONFIG_WAIT; i++) {
3250 if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
3252 /* delay and try again */
3257 print_cfg_table(&pdev->dev, h->cfgtable);
3258 #endif /* HPSA_DEBUG */
3260 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
3261 dev_warn(&pdev->dev, "unable to get board into simple mode\n");
3263 goto err_out_free_res;
3269 * Deliberately omit pci_disable_device(): it does something nasty to
3270 * Smart Array controllers that pci_enable_device does not undo
3272 pci_release_regions(pdev);
3276 static int __devinit hpsa_init_one(struct pci_dev *pdev,
3277 const struct pci_device_id *ent)
3281 struct ctlr_info *h;
3283 if (number_of_controllers == 0)
3284 printk(KERN_INFO DRIVER_NAME "\n");
3285 if (reset_devices) {
3286 /* Reset the controller with a PCI power-cycle */
3287 if (hpsa_hard_reset_controller(pdev) || hpsa_reset_msi(pdev))
3290 /* Some devices (notably the HP Smart Array 5i Controller)
3291 need a little pause here */
3292 msleep(HPSA_POST_RESET_PAUSE_MSECS);
3294 /* Now try to get the controller to respond to a no-op */
3295 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
3296 if (hpsa_noop(pdev) == 0)
3299 dev_warn(&pdev->dev, "no-op failed%s\n",
3300 (i < 11 ? "; re-trying" : ""));
3304 BUILD_BUG_ON(sizeof(struct CommandList) % 8);
3305 h = kzalloc(sizeof(*h), GFP_KERNEL);
3309 h->busy_initializing = 1;
3310 INIT_HLIST_HEAD(&h->cmpQ);
3311 INIT_HLIST_HEAD(&h->reqQ);
3312 mutex_init(&h->busy_shutting_down);
3313 init_completion(&h->scan_wait);
3314 rc = hpsa_pci_init(h, pdev);
3318 sprintf(h->devname, "hpsa%d", number_of_controllers);
3319 h->ctlr = number_of_controllers;
3320 number_of_controllers++;
3323 /* configure PCI DMA stuff */
3324 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
3328 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3332 dev_err(&pdev->dev, "no suitable DMA available\n");
3337 /* make sure the board interrupts are off */
3338 h->access.set_intr_mask(h, HPSA_INTR_OFF);
3339 rc = request_irq(h->intr[SIMPLE_MODE_INT], do_hpsa_intr,
3340 IRQF_DISABLED | IRQF_SHARED, h->devname, h);
3342 dev_err(&pdev->dev, "unable to get irq %d for %s\n",
3343 h->intr[SIMPLE_MODE_INT], h->devname);
3347 dev_info(&pdev->dev, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
3348 h->devname, pdev->device, pci_name(pdev),
3349 h->intr[SIMPLE_MODE_INT], dac ? "" : " not");
3352 kmalloc(((h->nr_cmds + BITS_PER_LONG -
3353 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL);
3354 h->cmd_pool = pci_alloc_consistent(h->pdev,
3355 h->nr_cmds * sizeof(*h->cmd_pool),
3356 &(h->cmd_pool_dhandle));
3357 h->errinfo_pool = pci_alloc_consistent(h->pdev,
3358 h->nr_cmds * sizeof(*h->errinfo_pool),
3359 &(h->errinfo_pool_dhandle));
3360 if ((h->cmd_pool_bits == NULL)
3361 || (h->cmd_pool == NULL)
3362 || (h->errinfo_pool == NULL)) {
3363 dev_err(&pdev->dev, "out of memory");
3367 spin_lock_init(&h->lock);
3369 pci_set_drvdata(pdev, h);
3370 memset(h->cmd_pool_bits, 0,
3371 ((h->nr_cmds + BITS_PER_LONG -
3372 1) / BITS_PER_LONG) * sizeof(unsigned long));
3376 /* Turn the interrupts on so we can service requests */
3377 h->access.set_intr_mask(h, HPSA_INTR_ON);
3379 hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */
3380 h->busy_initializing = 0;
3384 kfree(h->cmd_pool_bits);
3386 pci_free_consistent(h->pdev,
3387 h->nr_cmds * sizeof(struct CommandList),
3388 h->cmd_pool, h->cmd_pool_dhandle);
3389 if (h->errinfo_pool)
3390 pci_free_consistent(h->pdev,
3391 h->nr_cmds * sizeof(struct ErrorInfo),
3393 h->errinfo_pool_dhandle);
3394 free_irq(h->intr[SIMPLE_MODE_INT], h);
3397 h->busy_initializing = 0;
3402 static void hpsa_flush_cache(struct ctlr_info *h)
3405 struct CommandList *c;
3407 flush_buf = kzalloc(4, GFP_KERNEL);
3411 c = cmd_special_alloc(h);
3413 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
3416 fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
3417 RAID_CTLR_LUNID, TYPE_CMD);
3418 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE);
3419 if (c->err_info->CommandStatus != 0)
3420 dev_warn(&h->pdev->dev,
3421 "error flushing cache on controller\n");
3422 cmd_special_free(h, c);
3427 static void hpsa_shutdown(struct pci_dev *pdev)
3429 struct ctlr_info *h;
3431 h = pci_get_drvdata(pdev);
3432 /* Turn board interrupts off and send the flush cache command
3433 * sendcmd will turn off interrupt, and send the flush...
3434 * To write all data in the battery backed cache to disks
3436 hpsa_flush_cache(h);
3437 h->access.set_intr_mask(h, HPSA_INTR_OFF);
3438 free_irq(h->intr[2], h);
3439 #ifdef CONFIG_PCI_MSI
3441 pci_disable_msix(h->pdev);
3442 else if (h->msi_vector)
3443 pci_disable_msi(h->pdev);
3444 #endif /* CONFIG_PCI_MSI */
3447 static void __devexit hpsa_remove_one(struct pci_dev *pdev)
3449 struct ctlr_info *h;
3451 if (pci_get_drvdata(pdev) == NULL) {
3452 dev_err(&pdev->dev, "unable to remove device \n");
3455 h = pci_get_drvdata(pdev);
3456 mutex_lock(&h->busy_shutting_down);
3457 remove_from_scan_list(h);
3458 hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */
3459 hpsa_shutdown(pdev);
3461 pci_free_consistent(h->pdev,
3462 h->nr_cmds * sizeof(struct CommandList),
3463 h->cmd_pool, h->cmd_pool_dhandle);
3464 pci_free_consistent(h->pdev,
3465 h->nr_cmds * sizeof(struct ErrorInfo),
3466 h->errinfo_pool, h->errinfo_pool_dhandle);
3467 kfree(h->cmd_pool_bits);
3469 * Deliberately omit pci_disable_device(): it does something nasty to
3470 * Smart Array controllers that pci_enable_device does not undo
3472 pci_release_regions(pdev);
3473 pci_set_drvdata(pdev, NULL);
3474 mutex_unlock(&h->busy_shutting_down);
3478 static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
3479 __attribute__((unused)) pm_message_t state)
3484 static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
3489 static struct pci_driver hpsa_pci_driver = {
3491 .probe = hpsa_init_one,
3492 .remove = __devexit_p(hpsa_remove_one),
3493 .id_table = hpsa_pci_device_id, /* id_table */
3494 .shutdown = hpsa_shutdown,
3495 .suspend = hpsa_suspend,
3496 .resume = hpsa_resume,
3500 * This is it. Register the PCI driver information for the cards we control
3501 * the OS will call our registered routines when it finds one of our cards.
3503 static int __init hpsa_init(void)
3506 /* Start the scan thread */
3507 hpsa_scan_thread = kthread_run(hpsa_scan_func, NULL, "hpsa_scan");
3508 if (IS_ERR(hpsa_scan_thread)) {
3509 err = PTR_ERR(hpsa_scan_thread);
3512 err = pci_register_driver(&hpsa_pci_driver);
3514 kthread_stop(hpsa_scan_thread);
3518 static void __exit hpsa_cleanup(void)
3520 pci_unregister_driver(&hpsa_pci_driver);
3521 kthread_stop(hpsa_scan_thread);
3524 module_init(hpsa_init);
3525 module_exit(hpsa_cleanup);