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");
77 static int hpsa_simple_mode;
78 module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR);
79 MODULE_PARM_DESC(hpsa_simple_mode,
80 "Use 'simple mode' rather than 'performant mode'");
82 /* define the PCI info for the cards we can control */
83 static const struct pci_device_id hpsa_pci_device_id[] = {
84 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
85 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
86 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
87 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
88 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
89 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324a},
90 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324b},
91 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233},
92 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3250},
93 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3251},
94 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3252},
95 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3253},
96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3254},
97 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
98 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
102 MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);
104 /* board_id = Subsystem Device ID & Vendor ID
105 * product = Marketing Name for the board
106 * access = Address of the struct of function pointers
108 static struct board_type products[] = {
109 {0x3241103C, "Smart Array P212", &SA5_access},
110 {0x3243103C, "Smart Array P410", &SA5_access},
111 {0x3245103C, "Smart Array P410i", &SA5_access},
112 {0x3247103C, "Smart Array P411", &SA5_access},
113 {0x3249103C, "Smart Array P812", &SA5_access},
114 {0x324a103C, "Smart Array P712m", &SA5_access},
115 {0x324b103C, "Smart Array P711m", &SA5_access},
116 {0x3250103C, "Smart Array", &SA5_access},
117 {0x3250113C, "Smart Array", &SA5_access},
118 {0x3250123C, "Smart Array", &SA5_access},
119 {0x3250133C, "Smart Array", &SA5_access},
120 {0x3250143C, "Smart Array", &SA5_access},
121 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
124 static int number_of_controllers;
126 static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id);
127 static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id);
128 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg);
129 static void start_io(struct ctlr_info *h);
132 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg);
135 static void cmd_free(struct ctlr_info *h, struct CommandList *c);
136 static void cmd_special_free(struct ctlr_info *h, struct CommandList *c);
137 static struct CommandList *cmd_alloc(struct ctlr_info *h);
138 static struct CommandList *cmd_special_alloc(struct ctlr_info *h);
139 static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
140 void *buff, size_t size, u8 page_code, unsigned char *scsi3addr,
143 static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
144 static void hpsa_scan_start(struct Scsi_Host *);
145 static int hpsa_scan_finished(struct Scsi_Host *sh,
146 unsigned long elapsed_time);
147 static int hpsa_change_queue_depth(struct scsi_device *sdev,
148 int qdepth, int reason);
150 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
151 static int hpsa_slave_alloc(struct scsi_device *sdev);
152 static void hpsa_slave_destroy(struct scsi_device *sdev);
154 static ssize_t raid_level_show(struct device *dev,
155 struct device_attribute *attr, char *buf);
156 static ssize_t lunid_show(struct device *dev,
157 struct device_attribute *attr, char *buf);
158 static ssize_t unique_id_show(struct device *dev,
159 struct device_attribute *attr, char *buf);
160 static ssize_t host_show_firmware_revision(struct device *dev,
161 struct device_attribute *attr, char *buf);
162 static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno);
163 static ssize_t host_store_rescan(struct device *dev,
164 struct device_attribute *attr, const char *buf, size_t count);
165 static int check_for_unit_attention(struct ctlr_info *h,
166 struct CommandList *c);
167 static void check_ioctl_unit_attention(struct ctlr_info *h,
168 struct CommandList *c);
169 /* performant mode helper functions */
170 static void calc_bucket_map(int *bucket, int num_buckets,
171 int nsgs, int *bucket_map);
172 static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
173 static inline u32 next_command(struct ctlr_info *h);
174 static int __devinit hpsa_find_cfg_addrs(struct pci_dev *pdev,
175 void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index,
177 static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
178 unsigned long *memory_bar);
179 static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id);
180 static int __devinit hpsa_wait_for_board_state(struct pci_dev *pdev,
181 void __iomem *vaddr, int wait_for_ready);
182 #define BOARD_NOT_READY 0
183 #define BOARD_READY 1
185 static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
186 static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
187 static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
188 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
189 static DEVICE_ATTR(firmware_revision, S_IRUGO,
190 host_show_firmware_revision, NULL);
192 static struct device_attribute *hpsa_sdev_attrs[] = {
193 &dev_attr_raid_level,
199 static struct device_attribute *hpsa_shost_attrs[] = {
201 &dev_attr_firmware_revision,
205 static struct scsi_host_template hpsa_driver_template = {
206 .module = THIS_MODULE,
209 .queuecommand = hpsa_scsi_queue_command,
210 .scan_start = hpsa_scan_start,
211 .scan_finished = hpsa_scan_finished,
212 .change_queue_depth = hpsa_change_queue_depth,
214 .use_clustering = ENABLE_CLUSTERING,
215 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
217 .slave_alloc = hpsa_slave_alloc,
218 .slave_destroy = hpsa_slave_destroy,
220 .compat_ioctl = hpsa_compat_ioctl,
222 .sdev_attrs = hpsa_sdev_attrs,
223 .shost_attrs = hpsa_shost_attrs,
226 static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
228 unsigned long *priv = shost_priv(sdev->host);
229 return (struct ctlr_info *) *priv;
232 static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
234 unsigned long *priv = shost_priv(sh);
235 return (struct ctlr_info *) *priv;
238 static int check_for_unit_attention(struct ctlr_info *h,
239 struct CommandList *c)
241 if (c->err_info->SenseInfo[2] != UNIT_ATTENTION)
244 switch (c->err_info->SenseInfo[12]) {
246 dev_warn(&h->pdev->dev, "hpsa%d: a state change "
247 "detected, command retried\n", h->ctlr);
250 dev_warn(&h->pdev->dev, "hpsa%d: LUN failure "
251 "detected, action required\n", h->ctlr);
253 case REPORT_LUNS_CHANGED:
254 dev_warn(&h->pdev->dev, "hpsa%d: report LUN data "
255 "changed, action required\n", h->ctlr);
257 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
261 dev_warn(&h->pdev->dev, "hpsa%d: a power on "
262 "or device reset detected\n", h->ctlr);
264 case UNIT_ATTENTION_CLEARED:
265 dev_warn(&h->pdev->dev, "hpsa%d: unit attention "
266 "cleared by another initiator\n", h->ctlr);
269 dev_warn(&h->pdev->dev, "hpsa%d: unknown "
270 "unit attention detected\n", h->ctlr);
276 static ssize_t host_store_rescan(struct device *dev,
277 struct device_attribute *attr,
278 const char *buf, size_t count)
281 struct Scsi_Host *shost = class_to_shost(dev);
282 h = shost_to_hba(shost);
283 hpsa_scan_start(h->scsi_host);
287 static ssize_t host_show_firmware_revision(struct device *dev,
288 struct device_attribute *attr, char *buf)
291 struct Scsi_Host *shost = class_to_shost(dev);
292 unsigned char *fwrev;
294 h = shost_to_hba(shost);
295 if (!h->hba_inquiry_data)
297 fwrev = &h->hba_inquiry_data[32];
298 return snprintf(buf, 20, "%c%c%c%c\n",
299 fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
302 /* Enqueuing and dequeuing functions for cmdlists. */
303 static inline void addQ(struct hlist_head *list, struct CommandList *c)
305 hlist_add_head(&c->list, list);
308 static inline u32 next_command(struct ctlr_info *h)
312 if (unlikely(h->transMethod != CFGTBL_Trans_Performant))
313 return h->access.command_completed(h);
315 if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) {
316 a = *(h->reply_pool_head); /* Next cmd in ring buffer */
317 (h->reply_pool_head)++;
318 h->commands_outstanding--;
322 /* Check for wraparound */
323 if (h->reply_pool_head == (h->reply_pool + h->max_commands)) {
324 h->reply_pool_head = h->reply_pool;
325 h->reply_pool_wraparound ^= 1;
330 /* set_performant_mode: Modify the tag for cciss performant
331 * set bit 0 for pull model, bits 3-1 for block fetch
334 static void set_performant_mode(struct ctlr_info *h, struct CommandList *c)
336 if (likely(h->transMethod == CFGTBL_Trans_Performant))
337 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
340 static void enqueue_cmd_and_start_io(struct ctlr_info *h,
341 struct CommandList *c)
345 set_performant_mode(h, c);
346 spin_lock_irqsave(&h->lock, flags);
350 spin_unlock_irqrestore(&h->lock, flags);
353 static inline void removeQ(struct CommandList *c)
355 if (WARN_ON(hlist_unhashed(&c->list)))
357 hlist_del_init(&c->list);
360 static inline int is_hba_lunid(unsigned char scsi3addr[])
362 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
365 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
367 return (scsi3addr[3] & 0xC0) == 0x40;
370 static inline int is_scsi_rev_5(struct ctlr_info *h)
372 if (!h->hba_inquiry_data)
374 if ((h->hba_inquiry_data[2] & 0x07) == 5)
379 static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
382 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
384 static ssize_t raid_level_show(struct device *dev,
385 struct device_attribute *attr, char *buf)
388 unsigned char rlevel;
390 struct scsi_device *sdev;
391 struct hpsa_scsi_dev_t *hdev;
394 sdev = to_scsi_device(dev);
395 h = sdev_to_hba(sdev);
396 spin_lock_irqsave(&h->lock, flags);
397 hdev = sdev->hostdata;
399 spin_unlock_irqrestore(&h->lock, flags);
403 /* Is this even a logical drive? */
404 if (!is_logical_dev_addr_mode(hdev->scsi3addr)) {
405 spin_unlock_irqrestore(&h->lock, flags);
406 l = snprintf(buf, PAGE_SIZE, "N/A\n");
410 rlevel = hdev->raid_level;
411 spin_unlock_irqrestore(&h->lock, flags);
412 if (rlevel > RAID_UNKNOWN)
413 rlevel = RAID_UNKNOWN;
414 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
418 static ssize_t lunid_show(struct device *dev,
419 struct device_attribute *attr, char *buf)
422 struct scsi_device *sdev;
423 struct hpsa_scsi_dev_t *hdev;
425 unsigned char lunid[8];
427 sdev = to_scsi_device(dev);
428 h = sdev_to_hba(sdev);
429 spin_lock_irqsave(&h->lock, flags);
430 hdev = sdev->hostdata;
432 spin_unlock_irqrestore(&h->lock, flags);
435 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
436 spin_unlock_irqrestore(&h->lock, flags);
437 return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
438 lunid[0], lunid[1], lunid[2], lunid[3],
439 lunid[4], lunid[5], lunid[6], lunid[7]);
442 static ssize_t unique_id_show(struct device *dev,
443 struct device_attribute *attr, char *buf)
446 struct scsi_device *sdev;
447 struct hpsa_scsi_dev_t *hdev;
449 unsigned char sn[16];
451 sdev = to_scsi_device(dev);
452 h = sdev_to_hba(sdev);
453 spin_lock_irqsave(&h->lock, flags);
454 hdev = sdev->hostdata;
456 spin_unlock_irqrestore(&h->lock, flags);
459 memcpy(sn, hdev->device_id, sizeof(sn));
460 spin_unlock_irqrestore(&h->lock, flags);
461 return snprintf(buf, 16 * 2 + 2,
462 "%02X%02X%02X%02X%02X%02X%02X%02X"
463 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
464 sn[0], sn[1], sn[2], sn[3],
465 sn[4], sn[5], sn[6], sn[7],
466 sn[8], sn[9], sn[10], sn[11],
467 sn[12], sn[13], sn[14], sn[15]);
470 static int hpsa_find_target_lun(struct ctlr_info *h,
471 unsigned char scsi3addr[], int bus, int *target, int *lun)
473 /* finds an unused bus, target, lun for a new physical device
474 * assumes h->devlock is held
477 DECLARE_BITMAP(lun_taken, HPSA_MAX_SCSI_DEVS_PER_HBA);
479 memset(&lun_taken[0], 0, HPSA_MAX_SCSI_DEVS_PER_HBA >> 3);
481 for (i = 0; i < h->ndevices; i++) {
482 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
483 set_bit(h->dev[i]->target, lun_taken);
486 for (i = 0; i < HPSA_MAX_SCSI_DEVS_PER_HBA; i++) {
487 if (!test_bit(i, lun_taken)) {
498 /* Add an entry into h->dev[] array. */
499 static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno,
500 struct hpsa_scsi_dev_t *device,
501 struct hpsa_scsi_dev_t *added[], int *nadded)
503 /* assumes h->devlock is held */
506 unsigned char addr1[8], addr2[8];
507 struct hpsa_scsi_dev_t *sd;
509 if (n >= HPSA_MAX_SCSI_DEVS_PER_HBA) {
510 dev_err(&h->pdev->dev, "too many devices, some will be "
515 /* physical devices do not have lun or target assigned until now. */
516 if (device->lun != -1)
517 /* Logical device, lun is already assigned. */
520 /* If this device a non-zero lun of a multi-lun device
521 * byte 4 of the 8-byte LUN addr will contain the logical
522 * unit no, zero otherise.
524 if (device->scsi3addr[4] == 0) {
525 /* This is not a non-zero lun of a multi-lun device */
526 if (hpsa_find_target_lun(h, device->scsi3addr,
527 device->bus, &device->target, &device->lun) != 0)
532 /* This is a non-zero lun of a multi-lun device.
533 * Search through our list and find the device which
534 * has the same 8 byte LUN address, excepting byte 4.
535 * Assign the same bus and target for this new LUN.
536 * Use the logical unit number from the firmware.
538 memcpy(addr1, device->scsi3addr, 8);
540 for (i = 0; i < n; i++) {
542 memcpy(addr2, sd->scsi3addr, 8);
544 /* differ only in byte 4? */
545 if (memcmp(addr1, addr2, 8) == 0) {
546 device->bus = sd->bus;
547 device->target = sd->target;
548 device->lun = device->scsi3addr[4];
552 if (device->lun == -1) {
553 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
554 " suspect firmware bug or unsupported hardware "
563 added[*nadded] = device;
566 /* initially, (before registering with scsi layer) we don't
567 * know our hostno and we don't want to print anything first
568 * time anyway (the scsi layer's inquiries will show that info)
570 /* if (hostno != -1) */
571 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n",
572 scsi_device_type(device->devtype), hostno,
573 device->bus, device->target, device->lun);
577 /* Replace an entry from h->dev[] array. */
578 static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno,
579 int entry, struct hpsa_scsi_dev_t *new_entry,
580 struct hpsa_scsi_dev_t *added[], int *nadded,
581 struct hpsa_scsi_dev_t *removed[], int *nremoved)
583 /* assumes h->devlock is held */
584 BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA);
585 removed[*nremoved] = h->dev[entry];
587 h->dev[entry] = new_entry;
588 added[*nadded] = new_entry;
590 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d changed.\n",
591 scsi_device_type(new_entry->devtype), hostno, new_entry->bus,
592 new_entry->target, new_entry->lun);
595 /* Remove an entry from h->dev[] array. */
596 static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry,
597 struct hpsa_scsi_dev_t *removed[], int *nremoved)
599 /* assumes h->devlock is held */
601 struct hpsa_scsi_dev_t *sd;
603 BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA);
606 removed[*nremoved] = h->dev[entry];
609 for (i = entry; i < h->ndevices-1; i++)
610 h->dev[i] = h->dev[i+1];
612 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n",
613 scsi_device_type(sd->devtype), hostno, sd->bus, sd->target,
617 #define SCSI3ADDR_EQ(a, b) ( \
618 (a)[7] == (b)[7] && \
619 (a)[6] == (b)[6] && \
620 (a)[5] == (b)[5] && \
621 (a)[4] == (b)[4] && \
622 (a)[3] == (b)[3] && \
623 (a)[2] == (b)[2] && \
624 (a)[1] == (b)[1] && \
627 static void fixup_botched_add(struct ctlr_info *h,
628 struct hpsa_scsi_dev_t *added)
630 /* called when scsi_add_device fails in order to re-adjust
631 * h->dev[] to match the mid layer's view.
636 spin_lock_irqsave(&h->lock, flags);
637 for (i = 0; i < h->ndevices; i++) {
638 if (h->dev[i] == added) {
639 for (j = i; j < h->ndevices-1; j++)
640 h->dev[j] = h->dev[j+1];
645 spin_unlock_irqrestore(&h->lock, flags);
649 static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
650 struct hpsa_scsi_dev_t *dev2)
652 /* we compare everything except lun and target as these
653 * are not yet assigned. Compare parts likely
656 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
657 sizeof(dev1->scsi3addr)) != 0)
659 if (memcmp(dev1->device_id, dev2->device_id,
660 sizeof(dev1->device_id)) != 0)
662 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
664 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
666 if (dev1->devtype != dev2->devtype)
668 if (dev1->bus != dev2->bus)
673 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
674 * and return needle location in *index. If scsi3addr matches, but not
675 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
676 * location in *index. If needle not found, return DEVICE_NOT_FOUND.
678 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
679 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
683 #define DEVICE_NOT_FOUND 0
684 #define DEVICE_CHANGED 1
685 #define DEVICE_SAME 2
686 for (i = 0; i < haystack_size; i++) {
687 if (haystack[i] == NULL) /* previously removed. */
689 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
691 if (device_is_the_same(needle, haystack[i]))
694 return DEVICE_CHANGED;
698 return DEVICE_NOT_FOUND;
701 static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno,
702 struct hpsa_scsi_dev_t *sd[], int nsds)
704 /* sd contains scsi3 addresses and devtypes, and inquiry
705 * data. This function takes what's in sd to be the current
706 * reality and updates h->dev[] to reflect that reality.
708 int i, entry, device_change, changes = 0;
709 struct hpsa_scsi_dev_t *csd;
711 struct hpsa_scsi_dev_t **added, **removed;
712 int nadded, nremoved;
713 struct Scsi_Host *sh = NULL;
715 added = kzalloc(sizeof(*added) * HPSA_MAX_SCSI_DEVS_PER_HBA,
717 removed = kzalloc(sizeof(*removed) * HPSA_MAX_SCSI_DEVS_PER_HBA,
720 if (!added || !removed) {
721 dev_warn(&h->pdev->dev, "out of memory in "
722 "adjust_hpsa_scsi_table\n");
726 spin_lock_irqsave(&h->devlock, flags);
728 /* find any devices in h->dev[] that are not in
729 * sd[] and remove them from h->dev[], and for any
730 * devices which have changed, remove the old device
731 * info and add the new device info.
736 while (i < h->ndevices) {
738 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
739 if (device_change == DEVICE_NOT_FOUND) {
741 hpsa_scsi_remove_entry(h, hostno, i,
743 continue; /* remove ^^^, hence i not incremented */
744 } else if (device_change == DEVICE_CHANGED) {
746 hpsa_scsi_replace_entry(h, hostno, i, sd[entry],
747 added, &nadded, removed, &nremoved);
748 /* Set it to NULL to prevent it from being freed
749 * at the bottom of hpsa_update_scsi_devices()
756 /* Now, make sure every device listed in sd[] is also
757 * listed in h->dev[], adding them if they aren't found
760 for (i = 0; i < nsds; i++) {
761 if (!sd[i]) /* if already added above. */
763 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
764 h->ndevices, &entry);
765 if (device_change == DEVICE_NOT_FOUND) {
767 if (hpsa_scsi_add_entry(h, hostno, sd[i],
768 added, &nadded) != 0)
770 sd[i] = NULL; /* prevent from being freed later. */
771 } else if (device_change == DEVICE_CHANGED) {
772 /* should never happen... */
774 dev_warn(&h->pdev->dev,
775 "device unexpectedly changed.\n");
776 /* but if it does happen, we just ignore that device */
779 spin_unlock_irqrestore(&h->devlock, flags);
781 /* Don't notify scsi mid layer of any changes the first time through
782 * (or if there are no changes) scsi_scan_host will do it later the
783 * first time through.
785 if (hostno == -1 || !changes)
789 /* Notify scsi mid layer of any removed devices */
790 for (i = 0; i < nremoved; i++) {
791 struct scsi_device *sdev =
792 scsi_device_lookup(sh, removed[i]->bus,
793 removed[i]->target, removed[i]->lun);
795 scsi_remove_device(sdev);
796 scsi_device_put(sdev);
798 /* We don't expect to get here.
799 * future cmds to this device will get selection
800 * timeout as if the device was gone.
802 dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d "
803 " for removal.", hostno, removed[i]->bus,
804 removed[i]->target, removed[i]->lun);
810 /* Notify scsi mid layer of any added devices */
811 for (i = 0; i < nadded; i++) {
812 if (scsi_add_device(sh, added[i]->bus,
813 added[i]->target, added[i]->lun) == 0)
815 dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, "
816 "device not added.\n", hostno, added[i]->bus,
817 added[i]->target, added[i]->lun);
818 /* now we have to remove it from h->dev,
819 * since it didn't get added to scsi mid layer
821 fixup_botched_add(h, added[i]);
830 * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t *
831 * Assume's h->devlock is held.
833 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
834 int bus, int target, int lun)
837 struct hpsa_scsi_dev_t *sd;
839 for (i = 0; i < h->ndevices; i++) {
841 if (sd->bus == bus && sd->target == target && sd->lun == lun)
847 /* link sdev->hostdata to our per-device structure. */
848 static int hpsa_slave_alloc(struct scsi_device *sdev)
850 struct hpsa_scsi_dev_t *sd;
854 h = sdev_to_hba(sdev);
855 spin_lock_irqsave(&h->devlock, flags);
856 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
857 sdev_id(sdev), sdev->lun);
860 spin_unlock_irqrestore(&h->devlock, flags);
864 static void hpsa_slave_destroy(struct scsi_device *sdev)
869 static void hpsa_scsi_setup(struct ctlr_info *h)
873 spin_lock_init(&h->devlock);
876 static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
882 for (i = 0; i < h->nr_cmds; i++) {
883 kfree(h->cmd_sg_list[i]);
884 h->cmd_sg_list[i] = NULL;
886 kfree(h->cmd_sg_list);
887 h->cmd_sg_list = NULL;
890 static int hpsa_allocate_sg_chain_blocks(struct ctlr_info *h)
894 if (h->chainsize <= 0)
897 h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds,
901 for (i = 0; i < h->nr_cmds; i++) {
902 h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) *
903 h->chainsize, GFP_KERNEL);
904 if (!h->cmd_sg_list[i])
910 hpsa_free_sg_chain_blocks(h);
914 static void hpsa_map_sg_chain_block(struct ctlr_info *h,
915 struct CommandList *c)
917 struct SGDescriptor *chain_sg, *chain_block;
920 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
921 chain_block = h->cmd_sg_list[c->cmdindex];
922 chain_sg->Ext = HPSA_SG_CHAIN;
923 chain_sg->Len = sizeof(*chain_sg) *
924 (c->Header.SGTotal - h->max_cmd_sg_entries);
925 temp64 = pci_map_single(h->pdev, chain_block, chain_sg->Len,
927 chain_sg->Addr.lower = (u32) (temp64 & 0x0FFFFFFFFULL);
928 chain_sg->Addr.upper = (u32) ((temp64 >> 32) & 0x0FFFFFFFFULL);
931 static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
932 struct CommandList *c)
934 struct SGDescriptor *chain_sg;
937 if (c->Header.SGTotal <= h->max_cmd_sg_entries)
940 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
941 temp64.val32.lower = chain_sg->Addr.lower;
942 temp64.val32.upper = chain_sg->Addr.upper;
943 pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE);
946 static void complete_scsi_command(struct CommandList *cp,
947 int timeout, u32 tag)
949 struct scsi_cmnd *cmd;
951 struct ErrorInfo *ei;
953 unsigned char sense_key;
954 unsigned char asc; /* additional sense code */
955 unsigned char ascq; /* additional sense code qualifier */
958 cmd = (struct scsi_cmnd *) cp->scsi_cmd;
961 scsi_dma_unmap(cmd); /* undo the DMA mappings */
962 if (cp->Header.SGTotal > h->max_cmd_sg_entries)
963 hpsa_unmap_sg_chain_block(h, cp);
965 cmd->result = (DID_OK << 16); /* host byte */
966 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
967 cmd->result |= ei->ScsiStatus;
969 /* copy the sense data whether we need to or not. */
970 memcpy(cmd->sense_buffer, ei->SenseInfo,
971 ei->SenseLen > SCSI_SENSE_BUFFERSIZE ?
972 SCSI_SENSE_BUFFERSIZE :
974 scsi_set_resid(cmd, ei->ResidualCnt);
976 if (ei->CommandStatus == 0) {
982 /* an error has occurred */
983 switch (ei->CommandStatus) {
985 case CMD_TARGET_STATUS:
986 if (ei->ScsiStatus) {
988 sense_key = 0xf & ei->SenseInfo[2];
989 /* Get additional sense code */
990 asc = ei->SenseInfo[12];
991 /* Get addition sense code qualifier */
992 ascq = ei->SenseInfo[13];
995 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
996 if (check_for_unit_attention(h, cp)) {
997 cmd->result = DID_SOFT_ERROR << 16;
1000 if (sense_key == ILLEGAL_REQUEST) {
1002 * SCSI REPORT_LUNS is commonly unsupported on
1003 * Smart Array. Suppress noisy complaint.
1005 if (cp->Request.CDB[0] == REPORT_LUNS)
1008 /* If ASC/ASCQ indicate Logical Unit
1009 * Not Supported condition,
1011 if ((asc == 0x25) && (ascq == 0x0)) {
1012 dev_warn(&h->pdev->dev, "cp %p "
1013 "has check condition\n", cp);
1018 if (sense_key == NOT_READY) {
1019 /* If Sense is Not Ready, Logical Unit
1020 * Not ready, Manual Intervention
1023 if ((asc == 0x04) && (ascq == 0x03)) {
1024 dev_warn(&h->pdev->dev, "cp %p "
1025 "has check condition: unit "
1026 "not ready, manual "
1027 "intervention required\n", cp);
1031 if (sense_key == ABORTED_COMMAND) {
1032 /* Aborted command is retryable */
1033 dev_warn(&h->pdev->dev, "cp %p "
1034 "has check condition: aborted command: "
1035 "ASC: 0x%x, ASCQ: 0x%x\n",
1037 cmd->result = DID_SOFT_ERROR << 16;
1040 /* Must be some other type of check condition */
1041 dev_warn(&h->pdev->dev, "cp %p has check condition: "
1043 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1044 "Returning result: 0x%x, "
1045 "cmd=[%02x %02x %02x %02x %02x "
1046 "%02x %02x %02x %02x %02x %02x "
1047 "%02x %02x %02x %02x %02x]\n",
1048 cp, sense_key, asc, ascq,
1050 cmd->cmnd[0], cmd->cmnd[1],
1051 cmd->cmnd[2], cmd->cmnd[3],
1052 cmd->cmnd[4], cmd->cmnd[5],
1053 cmd->cmnd[6], cmd->cmnd[7],
1054 cmd->cmnd[8], cmd->cmnd[9],
1055 cmd->cmnd[10], cmd->cmnd[11],
1056 cmd->cmnd[12], cmd->cmnd[13],
1057 cmd->cmnd[14], cmd->cmnd[15]);
1062 /* Problem was not a check condition
1063 * Pass it up to the upper layers...
1065 if (ei->ScsiStatus) {
1066 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
1067 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1068 "Returning result: 0x%x\n",
1070 sense_key, asc, ascq,
1072 } else { /* scsi status is zero??? How??? */
1073 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
1074 "Returning no connection.\n", cp),
1076 /* Ordinarily, this case should never happen,
1077 * but there is a bug in some released firmware
1078 * revisions that allows it to happen if, for
1079 * example, a 4100 backplane loses power and
1080 * the tape drive is in it. We assume that
1081 * it's a fatal error of some kind because we
1082 * can't show that it wasn't. We will make it
1083 * look like selection timeout since that is
1084 * the most common reason for this to occur,
1085 * and it's severe enough.
1088 cmd->result = DID_NO_CONNECT << 16;
1092 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
1094 case CMD_DATA_OVERRUN:
1095 dev_warn(&h->pdev->dev, "cp %p has"
1096 " completed with data overrun "
1100 /* print_bytes(cp, sizeof(*cp), 1, 0);
1102 /* We get CMD_INVALID if you address a non-existent device
1103 * instead of a selection timeout (no response). You will
1104 * see this if you yank out a drive, then try to access it.
1105 * This is kind of a shame because it means that any other
1106 * CMD_INVALID (e.g. driver bug) will get interpreted as a
1107 * missing target. */
1108 cmd->result = DID_NO_CONNECT << 16;
1111 case CMD_PROTOCOL_ERR:
1112 dev_warn(&h->pdev->dev, "cp %p has "
1113 "protocol error \n", cp);
1115 case CMD_HARDWARE_ERR:
1116 cmd->result = DID_ERROR << 16;
1117 dev_warn(&h->pdev->dev, "cp %p had hardware error\n", cp);
1119 case CMD_CONNECTION_LOST:
1120 cmd->result = DID_ERROR << 16;
1121 dev_warn(&h->pdev->dev, "cp %p had connection lost\n", cp);
1124 cmd->result = DID_ABORT << 16;
1125 dev_warn(&h->pdev->dev, "cp %p was aborted with status 0x%x\n",
1126 cp, ei->ScsiStatus);
1128 case CMD_ABORT_FAILED:
1129 cmd->result = DID_ERROR << 16;
1130 dev_warn(&h->pdev->dev, "cp %p reports abort failed\n", cp);
1132 case CMD_UNSOLICITED_ABORT:
1133 cmd->result = DID_RESET << 16;
1134 dev_warn(&h->pdev->dev, "cp %p aborted do to an unsolicited "
1138 cmd->result = DID_TIME_OUT << 16;
1139 dev_warn(&h->pdev->dev, "cp %p timedout\n", cp);
1142 cmd->result = DID_ERROR << 16;
1143 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
1144 cp, ei->CommandStatus);
1146 cmd->scsi_done(cmd);
1150 static int hpsa_scsi_detect(struct ctlr_info *h)
1152 struct Scsi_Host *sh;
1155 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
1162 sh->max_channel = 3;
1163 sh->max_cmd_len = MAX_COMMAND_SIZE;
1164 sh->max_lun = HPSA_MAX_LUN;
1165 sh->max_id = HPSA_MAX_LUN;
1166 sh->can_queue = h->nr_cmds;
1167 sh->cmd_per_lun = h->nr_cmds;
1168 sh->sg_tablesize = h->maxsgentries;
1170 sh->hostdata[0] = (unsigned long) h;
1171 sh->irq = h->intr[PERF_MODE_INT];
1172 sh->unique_id = sh->irq;
1173 error = scsi_add_host(sh, &h->pdev->dev);
1180 dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_add_host"
1181 " failed for controller %d\n", h->ctlr);
1185 dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_host_alloc"
1186 " failed for controller %d\n", h->ctlr);
1190 static void hpsa_pci_unmap(struct pci_dev *pdev,
1191 struct CommandList *c, int sg_used, int data_direction)
1194 union u64bit addr64;
1196 for (i = 0; i < sg_used; i++) {
1197 addr64.val32.lower = c->SG[i].Addr.lower;
1198 addr64.val32.upper = c->SG[i].Addr.upper;
1199 pci_unmap_single(pdev, (dma_addr_t) addr64.val, c->SG[i].Len,
1204 static void hpsa_map_one(struct pci_dev *pdev,
1205 struct CommandList *cp,
1212 if (buflen == 0 || data_direction == PCI_DMA_NONE) {
1213 cp->Header.SGList = 0;
1214 cp->Header.SGTotal = 0;
1218 addr64 = (u64) pci_map_single(pdev, buf, buflen, data_direction);
1219 cp->SG[0].Addr.lower =
1220 (u32) (addr64 & (u64) 0x00000000FFFFFFFF);
1221 cp->SG[0].Addr.upper =
1222 (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF);
1223 cp->SG[0].Len = buflen;
1224 cp->Header.SGList = (u8) 1; /* no. SGs contig in this cmd */
1225 cp->Header.SGTotal = (u16) 1; /* total sgs in this cmd list */
1228 static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
1229 struct CommandList *c)
1231 DECLARE_COMPLETION_ONSTACK(wait);
1234 enqueue_cmd_and_start_io(h, c);
1235 wait_for_completion(&wait);
1238 static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
1239 struct CommandList *c, int data_direction)
1241 int retry_count = 0;
1244 memset(c->err_info, 0, sizeof(c->err_info));
1245 hpsa_scsi_do_simple_cmd_core(h, c);
1247 } while (check_for_unit_attention(h, c) && retry_count <= 3);
1248 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
1251 static void hpsa_scsi_interpret_error(struct CommandList *cp)
1253 struct ErrorInfo *ei;
1254 struct device *d = &cp->h->pdev->dev;
1257 switch (ei->CommandStatus) {
1258 case CMD_TARGET_STATUS:
1259 dev_warn(d, "cmd %p has completed with errors\n", cp);
1260 dev_warn(d, "cmd %p has SCSI Status = %x\n", cp,
1262 if (ei->ScsiStatus == 0)
1263 dev_warn(d, "SCSI status is abnormally zero. "
1264 "(probably indicates selection timeout "
1265 "reported incorrectly due to a known "
1266 "firmware bug, circa July, 2001.)\n");
1268 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
1269 dev_info(d, "UNDERRUN\n");
1271 case CMD_DATA_OVERRUN:
1272 dev_warn(d, "cp %p has completed with data overrun\n", cp);
1275 /* controller unfortunately reports SCSI passthru's
1276 * to non-existent targets as invalid commands.
1278 dev_warn(d, "cp %p is reported invalid (probably means "
1279 "target device no longer present)\n", cp);
1280 /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0);
1284 case CMD_PROTOCOL_ERR:
1285 dev_warn(d, "cp %p has protocol error \n", cp);
1287 case CMD_HARDWARE_ERR:
1288 /* cmd->result = DID_ERROR << 16; */
1289 dev_warn(d, "cp %p had hardware error\n", cp);
1291 case CMD_CONNECTION_LOST:
1292 dev_warn(d, "cp %p had connection lost\n", cp);
1295 dev_warn(d, "cp %p was aborted\n", cp);
1297 case CMD_ABORT_FAILED:
1298 dev_warn(d, "cp %p reports abort failed\n", cp);
1300 case CMD_UNSOLICITED_ABORT:
1301 dev_warn(d, "cp %p aborted due to an unsolicited abort\n", cp);
1304 dev_warn(d, "cp %p timed out\n", cp);
1307 dev_warn(d, "cp %p returned unknown status %x\n", cp,
1312 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
1313 unsigned char page, unsigned char *buf,
1314 unsigned char bufsize)
1317 struct CommandList *c;
1318 struct ErrorInfo *ei;
1320 c = cmd_special_alloc(h);
1322 if (c == NULL) { /* trouble... */
1323 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
1327 fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD);
1328 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
1330 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
1331 hpsa_scsi_interpret_error(c);
1334 cmd_special_free(h, c);
1338 static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr)
1341 struct CommandList *c;
1342 struct ErrorInfo *ei;
1344 c = cmd_special_alloc(h);
1346 if (c == NULL) { /* trouble... */
1347 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
1351 fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, scsi3addr, TYPE_MSG);
1352 hpsa_scsi_do_simple_cmd_core(h, c);
1353 /* no unmap needed here because no data xfer. */
1356 if (ei->CommandStatus != 0) {
1357 hpsa_scsi_interpret_error(c);
1360 cmd_special_free(h, c);
1364 static void hpsa_get_raid_level(struct ctlr_info *h,
1365 unsigned char *scsi3addr, unsigned char *raid_level)
1370 *raid_level = RAID_UNKNOWN;
1371 buf = kzalloc(64, GFP_KERNEL);
1374 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0xC1, buf, 64);
1376 *raid_level = buf[8];
1377 if (*raid_level > RAID_UNKNOWN)
1378 *raid_level = RAID_UNKNOWN;
1383 /* Get the device id from inquiry page 0x83 */
1384 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
1385 unsigned char *device_id, int buflen)
1392 buf = kzalloc(64, GFP_KERNEL);
1395 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64);
1397 memcpy(device_id, &buf[8], buflen);
1402 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
1403 struct ReportLUNdata *buf, int bufsize,
1404 int extended_response)
1407 struct CommandList *c;
1408 unsigned char scsi3addr[8];
1409 struct ErrorInfo *ei;
1411 c = cmd_special_alloc(h);
1412 if (c == NULL) { /* trouble... */
1413 dev_err(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
1416 /* address the controller */
1417 memset(scsi3addr, 0, sizeof(scsi3addr));
1418 fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
1419 buf, bufsize, 0, scsi3addr, TYPE_CMD);
1420 if (extended_response)
1421 c->Request.CDB[1] = extended_response;
1422 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE);
1424 if (ei->CommandStatus != 0 &&
1425 ei->CommandStatus != CMD_DATA_UNDERRUN) {
1426 hpsa_scsi_interpret_error(c);
1429 cmd_special_free(h, c);
1433 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
1434 struct ReportLUNdata *buf,
1435 int bufsize, int extended_response)
1437 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, extended_response);
1440 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
1441 struct ReportLUNdata *buf, int bufsize)
1443 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
1446 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
1447 int bus, int target, int lun)
1450 device->target = target;
1454 static int hpsa_update_device_info(struct ctlr_info *h,
1455 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device)
1457 #define OBDR_TAPE_INQ_SIZE 49
1458 unsigned char *inq_buff;
1460 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
1464 /* Do an inquiry to the device to see what it is. */
1465 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
1466 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
1467 /* Inquiry failed (msg printed already) */
1468 dev_err(&h->pdev->dev,
1469 "hpsa_update_device_info: inquiry failed\n");
1473 this_device->devtype = (inq_buff[0] & 0x1f);
1474 memcpy(this_device->scsi3addr, scsi3addr, 8);
1475 memcpy(this_device->vendor, &inq_buff[8],
1476 sizeof(this_device->vendor));
1477 memcpy(this_device->model, &inq_buff[16],
1478 sizeof(this_device->model));
1479 memset(this_device->device_id, 0,
1480 sizeof(this_device->device_id));
1481 hpsa_get_device_id(h, scsi3addr, this_device->device_id,
1482 sizeof(this_device->device_id));
1484 if (this_device->devtype == TYPE_DISK &&
1485 is_logical_dev_addr_mode(scsi3addr))
1486 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
1488 this_device->raid_level = RAID_UNKNOWN;
1498 static unsigned char *msa2xxx_model[] = {
1506 static int is_msa2xxx(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
1510 for (i = 0; msa2xxx_model[i]; i++)
1511 if (strncmp(device->model, msa2xxx_model[i],
1512 strlen(msa2xxx_model[i])) == 0)
1517 /* Helper function to assign bus, target, lun mapping of devices.
1518 * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical
1519 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
1520 * Logical drive target and lun are assigned at this time, but
1521 * physical device lun and target assignment are deferred (assigned
1522 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
1524 static void figure_bus_target_lun(struct ctlr_info *h,
1525 u8 *lunaddrbytes, int *bus, int *target, int *lun,
1526 struct hpsa_scsi_dev_t *device)
1530 if (is_logical_dev_addr_mode(lunaddrbytes)) {
1531 /* logical device */
1532 if (unlikely(is_scsi_rev_5(h))) {
1533 /* p1210m, logical drives lun assignments
1534 * match SCSI REPORT LUNS data.
1536 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
1539 *lun = (lunid & 0x3fff) + 1;
1542 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
1543 if (is_msa2xxx(h, device)) {
1544 /* msa2xxx way, put logicals on bus 1
1545 * and match target/lun numbers box
1549 *target = (lunid >> 16) & 0x3fff;
1550 *lun = lunid & 0x00ff;
1552 /* Traditional smart array way. */
1555 *target = lunid & 0x3fff;
1559 /* physical device */
1560 if (is_hba_lunid(lunaddrbytes))
1561 if (unlikely(is_scsi_rev_5(h))) {
1562 *bus = 0; /* put p1210m ctlr at 0,0,0 */
1567 *bus = 3; /* traditional smartarray */
1569 *bus = 2; /* physical disk */
1571 *lun = -1; /* we will fill these in later. */
1576 * If there is no lun 0 on a target, linux won't find any devices.
1577 * For the MSA2xxx boxes, we have to manually detect the enclosure
1578 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
1579 * it for some reason. *tmpdevice is the target we're adding,
1580 * this_device is a pointer into the current element of currentsd[]
1581 * that we're building up in update_scsi_devices(), below.
1582 * lunzerobits is a bitmap that tracks which targets already have a
1584 * Returns 1 if an enclosure was added, 0 if not.
1586 static int add_msa2xxx_enclosure_device(struct ctlr_info *h,
1587 struct hpsa_scsi_dev_t *tmpdevice,
1588 struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes,
1589 int bus, int target, int lun, unsigned long lunzerobits[],
1590 int *nmsa2xxx_enclosures)
1592 unsigned char scsi3addr[8];
1594 if (test_bit(target, lunzerobits))
1595 return 0; /* There is already a lun 0 on this target. */
1597 if (!is_logical_dev_addr_mode(lunaddrbytes))
1598 return 0; /* It's the logical targets that may lack lun 0. */
1600 if (!is_msa2xxx(h, tmpdevice))
1601 return 0; /* It's only the MSA2xxx that have this problem. */
1603 if (lun == 0) /* if lun is 0, then obviously we have a lun 0. */
1606 if (is_hba_lunid(scsi3addr))
1607 return 0; /* Don't add the RAID controller here. */
1609 if (is_scsi_rev_5(h))
1610 return 0; /* p1210m doesn't need to do this. */
1612 #define MAX_MSA2XXX_ENCLOSURES 32
1613 if (*nmsa2xxx_enclosures >= MAX_MSA2XXX_ENCLOSURES) {
1614 dev_warn(&h->pdev->dev, "Maximum number of MSA2XXX "
1615 "enclosures exceeded. Check your hardware "
1620 memset(scsi3addr, 0, 8);
1621 scsi3addr[3] = target;
1622 if (hpsa_update_device_info(h, scsi3addr, this_device))
1624 (*nmsa2xxx_enclosures)++;
1625 hpsa_set_bus_target_lun(this_device, bus, target, 0);
1626 set_bit(target, lunzerobits);
1631 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
1632 * logdev. The number of luns in physdev and logdev are returned in
1633 * *nphysicals and *nlogicals, respectively.
1634 * Returns 0 on success, -1 otherwise.
1636 static int hpsa_gather_lun_info(struct ctlr_info *h,
1638 struct ReportLUNdata *physdev, u32 *nphysicals,
1639 struct ReportLUNdata *logdev, u32 *nlogicals)
1641 if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, 0)) {
1642 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
1645 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 8;
1646 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
1647 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded."
1648 " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
1649 *nphysicals - HPSA_MAX_PHYS_LUN);
1650 *nphysicals = HPSA_MAX_PHYS_LUN;
1652 if (hpsa_scsi_do_report_log_luns(h, logdev, reportlunsize)) {
1653 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
1656 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
1657 /* Reject Logicals in excess of our max capability. */
1658 if (*nlogicals > HPSA_MAX_LUN) {
1659 dev_warn(&h->pdev->dev,
1660 "maximum logical LUNs (%d) exceeded. "
1661 "%d LUNs ignored.\n", HPSA_MAX_LUN,
1662 *nlogicals - HPSA_MAX_LUN);
1663 *nlogicals = HPSA_MAX_LUN;
1665 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
1666 dev_warn(&h->pdev->dev,
1667 "maximum logical + physical LUNs (%d) exceeded. "
1668 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
1669 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
1670 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
1675 u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, int i,
1676 int nphysicals, int nlogicals, struct ReportLUNdata *physdev_list,
1677 struct ReportLUNdata *logdev_list)
1679 /* Helper function, figure out where the LUN ID info is coming from
1680 * given index i, lists of physical and logical devices, where in
1681 * the list the raid controller is supposed to appear (first or last)
1684 int logicals_start = nphysicals + (raid_ctlr_position == 0);
1685 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);
1687 if (i == raid_ctlr_position)
1688 return RAID_CTLR_LUNID;
1690 if (i < logicals_start)
1691 return &physdev_list->LUN[i - (raid_ctlr_position == 0)][0];
1693 if (i < last_device)
1694 return &logdev_list->LUN[i - nphysicals -
1695 (raid_ctlr_position == 0)][0];
1700 static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
1702 /* the idea here is we could get notified
1703 * that some devices have changed, so we do a report
1704 * physical luns and report logical luns cmd, and adjust
1705 * our list of devices accordingly.
1707 * The scsi3addr's of devices won't change so long as the
1708 * adapter is not reset. That means we can rescan and
1709 * tell which devices we already know about, vs. new
1710 * devices, vs. disappearing devices.
1712 struct ReportLUNdata *physdev_list = NULL;
1713 struct ReportLUNdata *logdev_list = NULL;
1714 unsigned char *inq_buff = NULL;
1717 u32 ndev_allocated = 0;
1718 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
1720 int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8;
1721 int i, nmsa2xxx_enclosures, ndevs_to_allocate;
1722 int bus, target, lun;
1723 int raid_ctlr_position;
1724 DECLARE_BITMAP(lunzerobits, HPSA_MAX_TARGETS_PER_CTLR);
1726 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_SCSI_DEVS_PER_HBA,
1728 physdev_list = kzalloc(reportlunsize, GFP_KERNEL);
1729 logdev_list = kzalloc(reportlunsize, GFP_KERNEL);
1730 inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
1731 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
1733 if (!currentsd || !physdev_list || !logdev_list ||
1734 !inq_buff || !tmpdevice) {
1735 dev_err(&h->pdev->dev, "out of memory\n");
1738 memset(lunzerobits, 0, sizeof(lunzerobits));
1740 if (hpsa_gather_lun_info(h, reportlunsize, physdev_list, &nphysicals,
1741 logdev_list, &nlogicals))
1744 /* We might see up to 32 MSA2xxx enclosures, actually 8 of them
1745 * but each of them 4 times through different paths. The plus 1
1746 * is for the RAID controller.
1748 ndevs_to_allocate = nphysicals + nlogicals + MAX_MSA2XXX_ENCLOSURES + 1;
1750 /* Allocate the per device structures */
1751 for (i = 0; i < ndevs_to_allocate; i++) {
1752 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
1753 if (!currentsd[i]) {
1754 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n",
1755 __FILE__, __LINE__);
1761 if (unlikely(is_scsi_rev_5(h)))
1762 raid_ctlr_position = 0;
1764 raid_ctlr_position = nphysicals + nlogicals;
1766 /* adjust our table of devices */
1767 nmsa2xxx_enclosures = 0;
1768 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
1771 /* Figure out where the LUN ID info is coming from */
1772 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
1773 i, nphysicals, nlogicals, physdev_list, logdev_list);
1774 /* skip masked physical devices. */
1775 if (lunaddrbytes[3] & 0xC0 &&
1776 i < nphysicals + (raid_ctlr_position == 0))
1779 /* Get device type, vendor, model, device id */
1780 if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice))
1781 continue; /* skip it if we can't talk to it. */
1782 figure_bus_target_lun(h, lunaddrbytes, &bus, &target, &lun,
1784 this_device = currentsd[ncurrent];
1787 * For the msa2xxx boxes, we have to insert a LUN 0 which
1788 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
1789 * is nonetheless an enclosure device there. We have to
1790 * present that otherwise linux won't find anything if
1791 * there is no lun 0.
1793 if (add_msa2xxx_enclosure_device(h, tmpdevice, this_device,
1794 lunaddrbytes, bus, target, lun, lunzerobits,
1795 &nmsa2xxx_enclosures)) {
1797 this_device = currentsd[ncurrent];
1800 *this_device = *tmpdevice;
1801 hpsa_set_bus_target_lun(this_device, bus, target, lun);
1803 switch (this_device->devtype) {
1805 /* We don't *really* support actual CD-ROM devices,
1806 * just "One Button Disaster Recovery" tape drive
1807 * which temporarily pretends to be a CD-ROM drive.
1808 * So we check that the device is really an OBDR tape
1809 * device by checking for "$DR-10" in bytes 43-48 of
1813 #define OBDR_TAPE_SIG "$DR-10"
1814 strncpy(obdr_sig, &inq_buff[43], 6);
1816 if (strncmp(obdr_sig, OBDR_TAPE_SIG, 6) != 0)
1817 /* Not OBDR device, ignore it. */
1828 case TYPE_MEDIUM_CHANGER:
1832 /* Only present the Smartarray HBA as a RAID controller.
1833 * If it's a RAID controller other than the HBA itself
1834 * (an external RAID controller, MSA500 or similar)
1837 if (!is_hba_lunid(lunaddrbytes))
1844 if (ncurrent >= HPSA_MAX_SCSI_DEVS_PER_HBA)
1847 adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent);
1850 for (i = 0; i < ndev_allocated; i++)
1851 kfree(currentsd[i]);
1854 kfree(physdev_list);
1858 /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
1859 * dma mapping and fills in the scatter gather entries of the
1862 static int hpsa_scatter_gather(struct ctlr_info *h,
1863 struct CommandList *cp,
1864 struct scsi_cmnd *cmd)
1867 struct scatterlist *sg;
1869 int use_sg, i, sg_index, chained;
1870 struct SGDescriptor *curr_sg;
1872 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
1874 use_sg = scsi_dma_map(cmd);
1879 goto sglist_finished;
1884 scsi_for_each_sg(cmd, sg, use_sg, i) {
1885 if (i == h->max_cmd_sg_entries - 1 &&
1886 use_sg > h->max_cmd_sg_entries) {
1888 curr_sg = h->cmd_sg_list[cp->cmdindex];
1891 addr64 = (u64) sg_dma_address(sg);
1892 len = sg_dma_len(sg);
1893 curr_sg->Addr.lower = (u32) (addr64 & 0x0FFFFFFFFULL);
1894 curr_sg->Addr.upper = (u32) ((addr64 >> 32) & 0x0FFFFFFFFULL);
1896 curr_sg->Ext = 0; /* we are not chaining */
1900 if (use_sg + chained > h->maxSG)
1901 h->maxSG = use_sg + chained;
1904 cp->Header.SGList = h->max_cmd_sg_entries;
1905 cp->Header.SGTotal = (u16) (use_sg + 1);
1906 hpsa_map_sg_chain_block(h, cp);
1912 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */
1913 cp->Header.SGTotal = (u16) use_sg; /* total sgs in this cmd list */
1918 static int hpsa_scsi_queue_command_lck(struct scsi_cmnd *cmd,
1919 void (*done)(struct scsi_cmnd *))
1921 struct ctlr_info *h;
1922 struct hpsa_scsi_dev_t *dev;
1923 unsigned char scsi3addr[8];
1924 struct CommandList *c;
1925 unsigned long flags;
1927 /* Get the ptr to our adapter structure out of cmd->host. */
1928 h = sdev_to_hba(cmd->device);
1929 dev = cmd->device->hostdata;
1931 cmd->result = DID_NO_CONNECT << 16;
1935 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
1937 /* Need a lock as this is being allocated from the pool */
1938 spin_lock_irqsave(&h->lock, flags);
1940 spin_unlock_irqrestore(&h->lock, flags);
1941 if (c == NULL) { /* trouble... */
1942 dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n");
1943 return SCSI_MLQUEUE_HOST_BUSY;
1946 /* Fill in the command list header */
1948 cmd->scsi_done = done; /* save this for use by completion code */
1950 /* save c in case we have to abort it */
1951 cmd->host_scribble = (unsigned char *) c;
1953 c->cmd_type = CMD_SCSI;
1955 c->Header.ReplyQueue = 0; /* unused in simple mode */
1956 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
1957 c->Header.Tag.lower = (c->cmdindex << DIRECT_LOOKUP_SHIFT);
1958 c->Header.Tag.lower |= DIRECT_LOOKUP_BIT;
1960 /* Fill in the request block... */
1962 c->Request.Timeout = 0;
1963 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
1964 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
1965 c->Request.CDBLen = cmd->cmd_len;
1966 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
1967 c->Request.Type.Type = TYPE_CMD;
1968 c->Request.Type.Attribute = ATTR_SIMPLE;
1969 switch (cmd->sc_data_direction) {
1971 c->Request.Type.Direction = XFER_WRITE;
1973 case DMA_FROM_DEVICE:
1974 c->Request.Type.Direction = XFER_READ;
1977 c->Request.Type.Direction = XFER_NONE;
1979 case DMA_BIDIRECTIONAL:
1980 /* This can happen if a buggy application does a scsi passthru
1981 * and sets both inlen and outlen to non-zero. ( see
1982 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
1985 c->Request.Type.Direction = XFER_RSVD;
1986 /* This is technically wrong, and hpsa controllers should
1987 * reject it with CMD_INVALID, which is the most correct
1988 * response, but non-fibre backends appear to let it
1989 * slide by, and give the same results as if this field
1990 * were set correctly. Either way is acceptable for
1991 * our purposes here.
1997 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
1998 cmd->sc_data_direction);
2003 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
2005 return SCSI_MLQUEUE_HOST_BUSY;
2007 enqueue_cmd_and_start_io(h, c);
2008 /* the cmd'll come back via intr handler in complete_scsi_command() */
2012 static DEF_SCSI_QCMD(hpsa_scsi_queue_command)
2014 static void hpsa_scan_start(struct Scsi_Host *sh)
2016 struct ctlr_info *h = shost_to_hba(sh);
2017 unsigned long flags;
2019 /* wait until any scan already in progress is finished. */
2021 spin_lock_irqsave(&h->scan_lock, flags);
2022 if (h->scan_finished)
2024 spin_unlock_irqrestore(&h->scan_lock, flags);
2025 wait_event(h->scan_wait_queue, h->scan_finished);
2026 /* Note: We don't need to worry about a race between this
2027 * thread and driver unload because the midlayer will
2028 * have incremented the reference count, so unload won't
2029 * happen if we're in here.
2032 h->scan_finished = 0; /* mark scan as in progress */
2033 spin_unlock_irqrestore(&h->scan_lock, flags);
2035 hpsa_update_scsi_devices(h, h->scsi_host->host_no);
2037 spin_lock_irqsave(&h->scan_lock, flags);
2038 h->scan_finished = 1; /* mark scan as finished. */
2039 wake_up_all(&h->scan_wait_queue);
2040 spin_unlock_irqrestore(&h->scan_lock, flags);
2043 static int hpsa_scan_finished(struct Scsi_Host *sh,
2044 unsigned long elapsed_time)
2046 struct ctlr_info *h = shost_to_hba(sh);
2047 unsigned long flags;
2050 spin_lock_irqsave(&h->scan_lock, flags);
2051 finished = h->scan_finished;
2052 spin_unlock_irqrestore(&h->scan_lock, flags);
2056 static int hpsa_change_queue_depth(struct scsi_device *sdev,
2057 int qdepth, int reason)
2059 struct ctlr_info *h = sdev_to_hba(sdev);
2061 if (reason != SCSI_QDEPTH_DEFAULT)
2067 if (qdepth > h->nr_cmds)
2068 qdepth = h->nr_cmds;
2069 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
2070 return sdev->queue_depth;
2073 static void hpsa_unregister_scsi(struct ctlr_info *h)
2075 /* we are being forcibly unloaded, and may not refuse. */
2076 scsi_remove_host(h->scsi_host);
2077 scsi_host_put(h->scsi_host);
2078 h->scsi_host = NULL;
2081 static int hpsa_register_scsi(struct ctlr_info *h)
2085 rc = hpsa_scsi_detect(h);
2087 dev_err(&h->pdev->dev, "hpsa_register_scsi: failed"
2088 " hpsa_scsi_detect(), rc is %d\n", rc);
2092 static int wait_for_device_to_become_ready(struct ctlr_info *h,
2093 unsigned char lunaddr[])
2097 int waittime = 1; /* seconds */
2098 struct CommandList *c;
2100 c = cmd_special_alloc(h);
2102 dev_warn(&h->pdev->dev, "out of memory in "
2103 "wait_for_device_to_become_ready.\n");
2107 /* Send test unit ready until device ready, or give up. */
2108 while (count < HPSA_TUR_RETRY_LIMIT) {
2110 /* Wait for a bit. do this first, because if we send
2111 * the TUR right away, the reset will just abort it.
2113 msleep(1000 * waittime);
2116 /* Increase wait time with each try, up to a point. */
2117 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
2118 waittime = waittime * 2;
2120 /* Send the Test Unit Ready */
2121 fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, lunaddr, TYPE_CMD);
2122 hpsa_scsi_do_simple_cmd_core(h, c);
2123 /* no unmap needed here because no data xfer. */
2125 if (c->err_info->CommandStatus == CMD_SUCCESS)
2128 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
2129 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
2130 (c->err_info->SenseInfo[2] == NO_SENSE ||
2131 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
2134 dev_warn(&h->pdev->dev, "waiting %d secs "
2135 "for device to become ready.\n", waittime);
2136 rc = 1; /* device not ready. */
2140 dev_warn(&h->pdev->dev, "giving up on device.\n");
2142 dev_warn(&h->pdev->dev, "device is ready.\n");
2144 cmd_special_free(h, c);
2148 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
2149 * complaining. Doing a host- or bus-reset can't do anything good here.
2151 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
2154 struct ctlr_info *h;
2155 struct hpsa_scsi_dev_t *dev;
2157 /* find the controller to which the command to be aborted was sent */
2158 h = sdev_to_hba(scsicmd->device);
2159 if (h == NULL) /* paranoia */
2161 dev = scsicmd->device->hostdata;
2163 dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: "
2164 "device lookup failed.\n");
2167 dev_warn(&h->pdev->dev, "resetting device %d:%d:%d:%d\n",
2168 h->scsi_host->host_no, dev->bus, dev->target, dev->lun);
2169 /* send a reset to the SCSI LUN which the command was sent to */
2170 rc = hpsa_send_reset(h, dev->scsi3addr);
2171 if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0)
2174 dev_warn(&h->pdev->dev, "resetting device failed.\n");
2179 * For operations that cannot sleep, a command block is allocated at init,
2180 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
2181 * which ones are free or in use. Lock must be held when calling this.
2182 * cmd_free() is the complement.
2184 static struct CommandList *cmd_alloc(struct ctlr_info *h)
2186 struct CommandList *c;
2188 union u64bit temp64;
2189 dma_addr_t cmd_dma_handle, err_dma_handle;
2192 i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds);
2193 if (i == h->nr_cmds)
2195 } while (test_and_set_bit
2196 (i & (BITS_PER_LONG - 1),
2197 h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0);
2198 c = h->cmd_pool + i;
2199 memset(c, 0, sizeof(*c));
2200 cmd_dma_handle = h->cmd_pool_dhandle
2202 c->err_info = h->errinfo_pool + i;
2203 memset(c->err_info, 0, sizeof(*c->err_info));
2204 err_dma_handle = h->errinfo_pool_dhandle
2205 + i * sizeof(*c->err_info);
2210 INIT_HLIST_NODE(&c->list);
2211 c->busaddr = (u32) cmd_dma_handle;
2212 temp64.val = (u64) err_dma_handle;
2213 c->ErrDesc.Addr.lower = temp64.val32.lower;
2214 c->ErrDesc.Addr.upper = temp64.val32.upper;
2215 c->ErrDesc.Len = sizeof(*c->err_info);
2221 /* For operations that can wait for kmalloc to possibly sleep,
2222 * this routine can be called. Lock need not be held to call
2223 * cmd_special_alloc. cmd_special_free() is the complement.
2225 static struct CommandList *cmd_special_alloc(struct ctlr_info *h)
2227 struct CommandList *c;
2228 union u64bit temp64;
2229 dma_addr_t cmd_dma_handle, err_dma_handle;
2231 c = pci_alloc_consistent(h->pdev, sizeof(*c), &cmd_dma_handle);
2234 memset(c, 0, sizeof(*c));
2238 c->err_info = pci_alloc_consistent(h->pdev, sizeof(*c->err_info),
2241 if (c->err_info == NULL) {
2242 pci_free_consistent(h->pdev,
2243 sizeof(*c), c, cmd_dma_handle);
2246 memset(c->err_info, 0, sizeof(*c->err_info));
2248 INIT_HLIST_NODE(&c->list);
2249 c->busaddr = (u32) cmd_dma_handle;
2250 temp64.val = (u64) err_dma_handle;
2251 c->ErrDesc.Addr.lower = temp64.val32.lower;
2252 c->ErrDesc.Addr.upper = temp64.val32.upper;
2253 c->ErrDesc.Len = sizeof(*c->err_info);
2259 static void cmd_free(struct ctlr_info *h, struct CommandList *c)
2263 i = c - h->cmd_pool;
2264 clear_bit(i & (BITS_PER_LONG - 1),
2265 h->cmd_pool_bits + (i / BITS_PER_LONG));
2269 static void cmd_special_free(struct ctlr_info *h, struct CommandList *c)
2271 union u64bit temp64;
2273 temp64.val32.lower = c->ErrDesc.Addr.lower;
2274 temp64.val32.upper = c->ErrDesc.Addr.upper;
2275 pci_free_consistent(h->pdev, sizeof(*c->err_info),
2276 c->err_info, (dma_addr_t) temp64.val);
2277 pci_free_consistent(h->pdev, sizeof(*c),
2278 c, (dma_addr_t) (c->busaddr & DIRECT_LOOKUP_MASK));
2281 #ifdef CONFIG_COMPAT
2283 static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg)
2285 IOCTL32_Command_struct __user *arg32 =
2286 (IOCTL32_Command_struct __user *) arg;
2287 IOCTL_Command_struct arg64;
2288 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
2293 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
2294 sizeof(arg64.LUN_info));
2295 err |= copy_from_user(&arg64.Request, &arg32->Request,
2296 sizeof(arg64.Request));
2297 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
2298 sizeof(arg64.error_info));
2299 err |= get_user(arg64.buf_size, &arg32->buf_size);
2300 err |= get_user(cp, &arg32->buf);
2301 arg64.buf = compat_ptr(cp);
2302 err |= copy_to_user(p, &arg64, sizeof(arg64));
2307 err = hpsa_ioctl(dev, CCISS_PASSTHRU, (void *)p);
2310 err |= copy_in_user(&arg32->error_info, &p->error_info,
2311 sizeof(arg32->error_info));
2317 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
2320 BIG_IOCTL32_Command_struct __user *arg32 =
2321 (BIG_IOCTL32_Command_struct __user *) arg;
2322 BIG_IOCTL_Command_struct arg64;
2323 BIG_IOCTL_Command_struct __user *p =
2324 compat_alloc_user_space(sizeof(arg64));
2329 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
2330 sizeof(arg64.LUN_info));
2331 err |= copy_from_user(&arg64.Request, &arg32->Request,
2332 sizeof(arg64.Request));
2333 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
2334 sizeof(arg64.error_info));
2335 err |= get_user(arg64.buf_size, &arg32->buf_size);
2336 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
2337 err |= get_user(cp, &arg32->buf);
2338 arg64.buf = compat_ptr(cp);
2339 err |= copy_to_user(p, &arg64, sizeof(arg64));
2344 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, (void *)p);
2347 err |= copy_in_user(&arg32->error_info, &p->error_info,
2348 sizeof(arg32->error_info));
2354 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg)
2357 case CCISS_GETPCIINFO:
2358 case CCISS_GETINTINFO:
2359 case CCISS_SETINTINFO:
2360 case CCISS_GETNODENAME:
2361 case CCISS_SETNODENAME:
2362 case CCISS_GETHEARTBEAT:
2363 case CCISS_GETBUSTYPES:
2364 case CCISS_GETFIRMVER:
2365 case CCISS_GETDRIVVER:
2366 case CCISS_REVALIDVOLS:
2367 case CCISS_DEREGDISK:
2368 case CCISS_REGNEWDISK:
2370 case CCISS_RESCANDISK:
2371 case CCISS_GETLUNINFO:
2372 return hpsa_ioctl(dev, cmd, arg);
2374 case CCISS_PASSTHRU32:
2375 return hpsa_ioctl32_passthru(dev, cmd, arg);
2376 case CCISS_BIG_PASSTHRU32:
2377 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
2380 return -ENOIOCTLCMD;
2385 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
2387 struct hpsa_pci_info pciinfo;
2391 pciinfo.domain = pci_domain_nr(h->pdev->bus);
2392 pciinfo.bus = h->pdev->bus->number;
2393 pciinfo.dev_fn = h->pdev->devfn;
2394 pciinfo.board_id = h->board_id;
2395 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
2400 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
2402 DriverVer_type DriverVer;
2403 unsigned char vmaj, vmin, vsubmin;
2406 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
2407 &vmaj, &vmin, &vsubmin);
2409 dev_info(&h->pdev->dev, "driver version string '%s' "
2410 "unrecognized.", HPSA_DRIVER_VERSION);
2415 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
2418 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
2423 static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
2425 IOCTL_Command_struct iocommand;
2426 struct CommandList *c;
2428 union u64bit temp64;
2432 if (!capable(CAP_SYS_RAWIO))
2434 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
2436 if ((iocommand.buf_size < 1) &&
2437 (iocommand.Request.Type.Direction != XFER_NONE)) {
2440 if (iocommand.buf_size > 0) {
2441 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
2444 if (iocommand.Request.Type.Direction == XFER_WRITE) {
2445 /* Copy the data into the buffer we created */
2446 if (copy_from_user(buff, iocommand.buf,
2447 iocommand.buf_size)) {
2452 memset(buff, 0, iocommand.buf_size);
2455 c = cmd_special_alloc(h);
2460 /* Fill in the command type */
2461 c->cmd_type = CMD_IOCTL_PEND;
2462 /* Fill in Command Header */
2463 c->Header.ReplyQueue = 0; /* unused in simple mode */
2464 if (iocommand.buf_size > 0) { /* buffer to fill */
2465 c->Header.SGList = 1;
2466 c->Header.SGTotal = 1;
2467 } else { /* no buffers to fill */
2468 c->Header.SGList = 0;
2469 c->Header.SGTotal = 0;
2471 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
2472 /* use the kernel address the cmd block for tag */
2473 c->Header.Tag.lower = c->busaddr;
2475 /* Fill in Request block */
2476 memcpy(&c->Request, &iocommand.Request,
2477 sizeof(c->Request));
2479 /* Fill in the scatter gather information */
2480 if (iocommand.buf_size > 0) {
2481 temp64.val = pci_map_single(h->pdev, buff,
2482 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
2483 c->SG[0].Addr.lower = temp64.val32.lower;
2484 c->SG[0].Addr.upper = temp64.val32.upper;
2485 c->SG[0].Len = iocommand.buf_size;
2486 c->SG[0].Ext = 0; /* we are not chaining*/
2488 hpsa_scsi_do_simple_cmd_core(h, c);
2489 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
2490 check_ioctl_unit_attention(h, c);
2492 /* Copy the error information out */
2493 memcpy(&iocommand.error_info, c->err_info,
2494 sizeof(iocommand.error_info));
2495 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
2497 cmd_special_free(h, c);
2500 if (iocommand.Request.Type.Direction == XFER_READ &&
2501 iocommand.buf_size > 0) {
2502 /* Copy the data out of the buffer we created */
2503 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
2505 cmd_special_free(h, c);
2510 cmd_special_free(h, c);
2514 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
2516 BIG_IOCTL_Command_struct *ioc;
2517 struct CommandList *c;
2518 unsigned char **buff = NULL;
2519 int *buff_size = NULL;
2520 union u64bit temp64;
2526 BYTE __user *data_ptr;
2530 if (!capable(CAP_SYS_RAWIO))
2532 ioc = (BIG_IOCTL_Command_struct *)
2533 kmalloc(sizeof(*ioc), GFP_KERNEL);
2538 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
2542 if ((ioc->buf_size < 1) &&
2543 (ioc->Request.Type.Direction != XFER_NONE)) {
2547 /* Check kmalloc limits using all SGs */
2548 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
2552 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
2556 buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL);
2561 buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL);
2566 left = ioc->buf_size;
2567 data_ptr = ioc->buf;
2569 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
2570 buff_size[sg_used] = sz;
2571 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
2572 if (buff[sg_used] == NULL) {
2576 if (ioc->Request.Type.Direction == XFER_WRITE) {
2577 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
2582 memset(buff[sg_used], 0, sz);
2587 c = cmd_special_alloc(h);
2592 c->cmd_type = CMD_IOCTL_PEND;
2593 c->Header.ReplyQueue = 0;
2594 c->Header.SGList = c->Header.SGTotal = sg_used;
2595 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
2596 c->Header.Tag.lower = c->busaddr;
2597 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
2598 if (ioc->buf_size > 0) {
2600 for (i = 0; i < sg_used; i++) {
2601 temp64.val = pci_map_single(h->pdev, buff[i],
2602 buff_size[i], PCI_DMA_BIDIRECTIONAL);
2603 c->SG[i].Addr.lower = temp64.val32.lower;
2604 c->SG[i].Addr.upper = temp64.val32.upper;
2605 c->SG[i].Len = buff_size[i];
2606 /* we are not chaining */
2610 hpsa_scsi_do_simple_cmd_core(h, c);
2612 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
2613 check_ioctl_unit_attention(h, c);
2614 /* Copy the error information out */
2615 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
2616 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
2617 cmd_special_free(h, c);
2621 if (ioc->Request.Type.Direction == XFER_READ && ioc->buf_size > 0) {
2622 /* Copy the data out of the buffer we created */
2623 BYTE __user *ptr = ioc->buf;
2624 for (i = 0; i < sg_used; i++) {
2625 if (copy_to_user(ptr, buff[i], buff_size[i])) {
2626 cmd_special_free(h, c);
2630 ptr += buff_size[i];
2633 cmd_special_free(h, c);
2637 for (i = 0; i < sg_used; i++)
2646 static void check_ioctl_unit_attention(struct ctlr_info *h,
2647 struct CommandList *c)
2649 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
2650 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
2651 (void) check_for_unit_attention(h, c);
2656 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg)
2658 struct ctlr_info *h;
2659 void __user *argp = (void __user *)arg;
2661 h = sdev_to_hba(dev);
2664 case CCISS_DEREGDISK:
2665 case CCISS_REGNEWDISK:
2667 hpsa_scan_start(h->scsi_host);
2669 case CCISS_GETPCIINFO:
2670 return hpsa_getpciinfo_ioctl(h, argp);
2671 case CCISS_GETDRIVVER:
2672 return hpsa_getdrivver_ioctl(h, argp);
2673 case CCISS_PASSTHRU:
2674 return hpsa_passthru_ioctl(h, argp);
2675 case CCISS_BIG_PASSTHRU:
2676 return hpsa_big_passthru_ioctl(h, argp);
2682 static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
2683 void *buff, size_t size, u8 page_code, unsigned char *scsi3addr,
2686 int pci_dir = XFER_NONE;
2688 c->cmd_type = CMD_IOCTL_PEND;
2689 c->Header.ReplyQueue = 0;
2690 if (buff != NULL && size > 0) {
2691 c->Header.SGList = 1;
2692 c->Header.SGTotal = 1;
2694 c->Header.SGList = 0;
2695 c->Header.SGTotal = 0;
2697 c->Header.Tag.lower = c->busaddr;
2698 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
2700 c->Request.Type.Type = cmd_type;
2701 if (cmd_type == TYPE_CMD) {
2704 /* are we trying to read a vital product page */
2705 if (page_code != 0) {
2706 c->Request.CDB[1] = 0x01;
2707 c->Request.CDB[2] = page_code;
2709 c->Request.CDBLen = 6;
2710 c->Request.Type.Attribute = ATTR_SIMPLE;
2711 c->Request.Type.Direction = XFER_READ;
2712 c->Request.Timeout = 0;
2713 c->Request.CDB[0] = HPSA_INQUIRY;
2714 c->Request.CDB[4] = size & 0xFF;
2716 case HPSA_REPORT_LOG:
2717 case HPSA_REPORT_PHYS:
2718 /* Talking to controller so It's a physical command
2719 mode = 00 target = 0. Nothing to write.
2721 c->Request.CDBLen = 12;
2722 c->Request.Type.Attribute = ATTR_SIMPLE;
2723 c->Request.Type.Direction = XFER_READ;
2724 c->Request.Timeout = 0;
2725 c->Request.CDB[0] = cmd;
2726 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
2727 c->Request.CDB[7] = (size >> 16) & 0xFF;
2728 c->Request.CDB[8] = (size >> 8) & 0xFF;
2729 c->Request.CDB[9] = size & 0xFF;
2731 case HPSA_CACHE_FLUSH:
2732 c->Request.CDBLen = 12;
2733 c->Request.Type.Attribute = ATTR_SIMPLE;
2734 c->Request.Type.Direction = XFER_WRITE;
2735 c->Request.Timeout = 0;
2736 c->Request.CDB[0] = BMIC_WRITE;
2737 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
2739 case TEST_UNIT_READY:
2740 c->Request.CDBLen = 6;
2741 c->Request.Type.Attribute = ATTR_SIMPLE;
2742 c->Request.Type.Direction = XFER_NONE;
2743 c->Request.Timeout = 0;
2746 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
2750 } else if (cmd_type == TYPE_MSG) {
2753 case HPSA_DEVICE_RESET_MSG:
2754 c->Request.CDBLen = 16;
2755 c->Request.Type.Type = 1; /* It is a MSG not a CMD */
2756 c->Request.Type.Attribute = ATTR_SIMPLE;
2757 c->Request.Type.Direction = XFER_NONE;
2758 c->Request.Timeout = 0; /* Don't time out */
2759 c->Request.CDB[0] = 0x01; /* RESET_MSG is 0x01 */
2760 c->Request.CDB[1] = 0x03; /* Reset target above */
2761 /* If bytes 4-7 are zero, it means reset the */
2763 c->Request.CDB[4] = 0x00;
2764 c->Request.CDB[5] = 0x00;
2765 c->Request.CDB[6] = 0x00;
2766 c->Request.CDB[7] = 0x00;
2770 dev_warn(&h->pdev->dev, "unknown message type %d\n",
2775 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
2779 switch (c->Request.Type.Direction) {
2781 pci_dir = PCI_DMA_FROMDEVICE;
2784 pci_dir = PCI_DMA_TODEVICE;
2787 pci_dir = PCI_DMA_NONE;
2790 pci_dir = PCI_DMA_BIDIRECTIONAL;
2793 hpsa_map_one(h->pdev, c, buff, size, pci_dir);
2799 * Map (physical) PCI mem into (virtual) kernel space
2801 static void __iomem *remap_pci_mem(ulong base, ulong size)
2803 ulong page_base = ((ulong) base) & PAGE_MASK;
2804 ulong page_offs = ((ulong) base) - page_base;
2805 void __iomem *page_remapped = ioremap(page_base, page_offs + size);
2807 return page_remapped ? (page_remapped + page_offs) : NULL;
2810 /* Takes cmds off the submission queue and sends them to the hardware,
2811 * then puts them on the queue of cmds waiting for completion.
2813 static void start_io(struct ctlr_info *h)
2815 struct CommandList *c;
2817 while (!hlist_empty(&h->reqQ)) {
2818 c = hlist_entry(h->reqQ.first, struct CommandList, list);
2819 /* can't do anything if fifo is full */
2820 if ((h->access.fifo_full(h))) {
2821 dev_warn(&h->pdev->dev, "fifo full\n");
2825 /* Get the first entry from the Request Q */
2829 /* Tell the controller execute command */
2830 h->access.submit_command(h, c);
2832 /* Put job onto the completed Q */
2837 static inline unsigned long get_next_completion(struct ctlr_info *h)
2839 return h->access.command_completed(h);
2842 static inline bool interrupt_pending(struct ctlr_info *h)
2844 return h->access.intr_pending(h);
2847 static inline long interrupt_not_for_us(struct ctlr_info *h)
2849 return (h->access.intr_pending(h) == 0) ||
2850 (h->interrupts_enabled == 0);
2853 static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
2856 if (unlikely(tag_index >= h->nr_cmds)) {
2857 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
2863 static inline void finish_cmd(struct CommandList *c, u32 raw_tag)
2866 if (likely(c->cmd_type == CMD_SCSI))
2867 complete_scsi_command(c, 0, raw_tag);
2868 else if (c->cmd_type == CMD_IOCTL_PEND)
2869 complete(c->waiting);
2872 static inline u32 hpsa_tag_contains_index(u32 tag)
2874 return tag & DIRECT_LOOKUP_BIT;
2877 static inline u32 hpsa_tag_to_index(u32 tag)
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 int hpsa_controller_hard_reset(struct pci_dev *pdev,
3061 void * __iomem vaddr, bool use_doorbell)
3067 /* For everything after the P600, the PCI power state method
3068 * of resetting the controller doesn't work, so we have this
3069 * other way using the doorbell register.
3071 dev_info(&pdev->dev, "using doorbell to reset controller\n");
3072 writel(DOORBELL_CTLR_RESET, vaddr + SA5_DOORBELL);
3074 } else { /* Try to do it the PCI power state way */
3076 /* Quoting from the Open CISS Specification: "The Power
3077 * Management Control/Status Register (CSR) controls the power
3078 * state of the device. The normal operating state is D0,
3079 * CSR=00h. The software off state is D3, CSR=03h. To reset
3080 * the controller, place the interface device in D3 then to D0,
3081 * this causes a secondary PCI reset which will reset the
3084 pos = pci_find_capability(pdev, PCI_CAP_ID_PM);
3087 "hpsa_reset_controller: "
3088 "PCI PM not supported\n");
3091 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
3092 /* enter the D3hot power management state */
3093 pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr);
3094 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3096 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
3100 /* enter the D0 power management state */
3101 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3103 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
3110 /* This does a hard reset of the controller using PCI power management
3111 * states or the using the doorbell register.
3113 static __devinit int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev)
3117 u64 cfg_base_addr_index;
3118 void __iomem *vaddr;
3119 unsigned long paddr;
3120 u32 misc_fw_support, active_transport;
3122 struct CfgTable __iomem *cfgtable;
3125 u16 command_register;
3127 /* For controllers as old as the P600, this is very nearly
3130 * pci_save_state(pci_dev);
3131 * pci_set_power_state(pci_dev, PCI_D3hot);
3132 * pci_set_power_state(pci_dev, PCI_D0);
3133 * pci_restore_state(pci_dev);
3135 * For controllers newer than the P600, the pci power state
3136 * method of resetting doesn't work so we have another way
3137 * using the doorbell register.
3140 /* Exclude 640x boards. These are two pci devices in one slot
3141 * which share a battery backed cache module. One controls the
3142 * cache, the other accesses the cache through the one that controls
3143 * it. If we reset the one controlling the cache, the other will
3144 * likely not be happy. Just forbid resetting this conjoined mess.
3145 * The 640x isn't really supported by hpsa anyway.
3147 rc = hpsa_lookup_board_id(pdev, &board_id);
3149 dev_warn(&pdev->dev, "Not resetting device.\n");
3152 if (board_id == 0x409C0E11 || board_id == 0x409D0E11)
3155 /* Save the PCI command register */
3156 pci_read_config_word(pdev, 4, &command_register);
3157 /* Turn the board off. This is so that later pci_restore_state()
3158 * won't turn the board on before the rest of config space is ready.
3160 pci_disable_device(pdev);
3161 pci_save_state(pdev);
3163 /* find the first memory BAR, so we can find the cfg table */
3164 rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
3167 vaddr = remap_pci_mem(paddr, 0x250);
3171 /* find cfgtable in order to check if reset via doorbell is supported */
3172 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
3173 &cfg_base_addr_index, &cfg_offset);
3176 cfgtable = remap_pci_mem(pci_resource_start(pdev,
3177 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
3183 /* If reset via doorbell register is supported, use that. */
3184 misc_fw_support = readl(&cfgtable->misc_fw_support);
3185 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
3187 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
3189 goto unmap_cfgtable;
3191 pci_restore_state(pdev);
3192 rc = pci_enable_device(pdev);
3194 dev_warn(&pdev->dev, "failed to enable device.\n");
3195 goto unmap_cfgtable;
3197 pci_write_config_word(pdev, 4, command_register);
3199 /* Some devices (notably the HP Smart Array 5i Controller)
3200 need a little pause here */
3201 msleep(HPSA_POST_RESET_PAUSE_MSECS);
3203 /* Wait for board to become not ready, then ready. */
3204 dev_info(&pdev->dev, "Waiting for board to become ready.\n");
3205 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_NOT_READY);
3207 dev_warn(&pdev->dev,
3208 "failed waiting for board to become not ready\n");
3209 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
3211 dev_warn(&pdev->dev,
3212 "failed waiting for board to become ready\n");
3213 goto unmap_cfgtable;
3215 dev_info(&pdev->dev, "board ready.\n");
3217 /* Controller should be in simple mode at this point. If it's not,
3218 * It means we're on one of those controllers which doesn't support
3219 * the doorbell reset method and on which the PCI power management reset
3220 * method doesn't work (P800, for example.)
3221 * In those cases, pretend the reset worked and hope for the best.
3223 active_transport = readl(&cfgtable->TransportActive);
3224 if (active_transport & PERFORMANT_MODE) {
3225 dev_warn(&pdev->dev, "Unable to successfully reset controller,"
3226 " proceeding anyway.\n");
3239 * We cannot read the structure directly, for portability we must use
3241 * This is for debug only.
3243 static void print_cfg_table(struct device *dev, struct CfgTable *tb)
3249 dev_info(dev, "Controller Configuration information\n");
3250 dev_info(dev, "------------------------------------\n");
3251 for (i = 0; i < 4; i++)
3252 temp_name[i] = readb(&(tb->Signature[i]));
3253 temp_name[4] = '\0';
3254 dev_info(dev, " Signature = %s\n", temp_name);
3255 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
3256 dev_info(dev, " Transport methods supported = 0x%x\n",
3257 readl(&(tb->TransportSupport)));
3258 dev_info(dev, " Transport methods active = 0x%x\n",
3259 readl(&(tb->TransportActive)));
3260 dev_info(dev, " Requested transport Method = 0x%x\n",
3261 readl(&(tb->HostWrite.TransportRequest)));
3262 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
3263 readl(&(tb->HostWrite.CoalIntDelay)));
3264 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
3265 readl(&(tb->HostWrite.CoalIntCount)));
3266 dev_info(dev, " Max outstanding commands = 0x%d\n",
3267 readl(&(tb->CmdsOutMax)));
3268 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
3269 for (i = 0; i < 16; i++)
3270 temp_name[i] = readb(&(tb->ServerName[i]));
3271 temp_name[16] = '\0';
3272 dev_info(dev, " Server Name = %s\n", temp_name);
3273 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
3274 readl(&(tb->HeartBeat)));
3275 #endif /* HPSA_DEBUG */
3278 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
3280 int i, offset, mem_type, bar_type;
3282 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
3285 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
3286 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
3287 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
3290 mem_type = pci_resource_flags(pdev, i) &
3291 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
3293 case PCI_BASE_ADDRESS_MEM_TYPE_32:
3294 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
3295 offset += 4; /* 32 bit */
3297 case PCI_BASE_ADDRESS_MEM_TYPE_64:
3300 default: /* reserved in PCI 2.2 */
3301 dev_warn(&pdev->dev,
3302 "base address is invalid\n");
3307 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
3313 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
3314 * controllers that are capable. If not, we use IO-APIC mode.
3317 static void __devinit hpsa_interrupt_mode(struct ctlr_info *h)
3319 #ifdef CONFIG_PCI_MSI
3321 struct msix_entry hpsa_msix_entries[4] = { {0, 0}, {0, 1},
3325 /* Some boards advertise MSI but don't really support it */
3326 if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||
3327 (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))
3328 goto default_int_mode;
3329 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
3330 dev_info(&h->pdev->dev, "MSIX\n");
3331 err = pci_enable_msix(h->pdev, hpsa_msix_entries, 4);
3333 h->intr[0] = hpsa_msix_entries[0].vector;
3334 h->intr[1] = hpsa_msix_entries[1].vector;
3335 h->intr[2] = hpsa_msix_entries[2].vector;
3336 h->intr[3] = hpsa_msix_entries[3].vector;
3341 dev_warn(&h->pdev->dev, "only %d MSI-X vectors "
3342 "available\n", err);
3343 goto default_int_mode;
3345 dev_warn(&h->pdev->dev, "MSI-X init failed %d\n",
3347 goto default_int_mode;
3350 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
3351 dev_info(&h->pdev->dev, "MSI\n");
3352 if (!pci_enable_msi(h->pdev))
3355 dev_warn(&h->pdev->dev, "MSI init failed\n");
3358 #endif /* CONFIG_PCI_MSI */
3359 /* if we get here we're going to use the default interrupt mode */
3360 h->intr[PERF_MODE_INT] = h->pdev->irq;
3363 static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
3366 u32 subsystem_vendor_id, subsystem_device_id;
3368 subsystem_vendor_id = pdev->subsystem_vendor;
3369 subsystem_device_id = pdev->subsystem_device;
3370 *board_id = ((subsystem_device_id << 16) & 0xffff0000) |
3371 subsystem_vendor_id;
3373 for (i = 0; i < ARRAY_SIZE(products); i++)
3374 if (*board_id == products[i].board_id)
3377 if ((subsystem_vendor_id != PCI_VENDOR_ID_HP &&
3378 subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) ||
3380 dev_warn(&pdev->dev, "unrecognized board ID: "
3381 "0x%08x, ignoring.\n", *board_id);
3384 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
3387 static inline bool hpsa_board_disabled(struct pci_dev *pdev)
3391 (void) pci_read_config_word(pdev, PCI_COMMAND, &command);
3392 return ((command & PCI_COMMAND_MEMORY) == 0);
3395 static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
3396 unsigned long *memory_bar)
3400 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
3401 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
3402 /* addressing mode bits already removed */
3403 *memory_bar = pci_resource_start(pdev, i);
3404 dev_dbg(&pdev->dev, "memory BAR = %lx\n",
3408 dev_warn(&pdev->dev, "no memory BAR found\n");
3412 static int __devinit hpsa_wait_for_board_state(struct pci_dev *pdev,
3413 void __iomem *vaddr, int wait_for_ready)
3418 iterations = HPSA_BOARD_READY_ITERATIONS;
3420 iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
3422 for (i = 0; i < iterations; i++) {
3423 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
3424 if (wait_for_ready) {
3425 if (scratchpad == HPSA_FIRMWARE_READY)
3428 if (scratchpad != HPSA_FIRMWARE_READY)
3431 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
3433 dev_warn(&pdev->dev, "board not ready, timed out.\n");
3437 static int __devinit hpsa_find_cfg_addrs(struct pci_dev *pdev,
3438 void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index,
3441 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
3442 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
3443 *cfg_base_addr &= (u32) 0x0000ffff;
3444 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
3445 if (*cfg_base_addr_index == -1) {
3446 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
3452 static int __devinit hpsa_find_cfgtables(struct ctlr_info *h)
3456 u64 cfg_base_addr_index;
3460 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
3461 &cfg_base_addr_index, &cfg_offset);
3464 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
3465 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
3468 /* Find performant mode table. */
3469 trans_offset = readl(&h->cfgtable->TransMethodOffset);
3470 h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
3471 cfg_base_addr_index)+cfg_offset+trans_offset,
3472 sizeof(*h->transtable));
3478 static void __devinit hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
3480 h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands));
3482 /* Limit commands in memory limited kdump scenario. */
3483 if (reset_devices && h->max_commands > 32)
3484 h->max_commands = 32;
3486 if (h->max_commands < 16) {
3487 dev_warn(&h->pdev->dev, "Controller reports "
3488 "max supported commands of %d, an obvious lie. "
3489 "Using 16. Ensure that firmware is up to date.\n",
3491 h->max_commands = 16;
3495 /* Interrogate the hardware for some limits:
3496 * max commands, max SG elements without chaining, and with chaining,
3497 * SG chain block size, etc.
3499 static void __devinit hpsa_find_board_params(struct ctlr_info *h)
3501 hpsa_get_max_perf_mode_cmds(h);
3502 h->nr_cmds = h->max_commands - 4; /* Allow room for some ioctls */
3503 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
3505 * Limit in-command s/g elements to 32 save dma'able memory.
3506 * Howvever spec says if 0, use 31
3508 h->max_cmd_sg_entries = 31;
3509 if (h->maxsgentries > 512) {
3510 h->max_cmd_sg_entries = 32;
3511 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries + 1;
3512 h->maxsgentries--; /* save one for chain pointer */
3514 h->maxsgentries = 31; /* default to traditional values */
3519 static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
3521 if ((readb(&h->cfgtable->Signature[0]) != 'C') ||
3522 (readb(&h->cfgtable->Signature[1]) != 'I') ||
3523 (readb(&h->cfgtable->Signature[2]) != 'S') ||
3524 (readb(&h->cfgtable->Signature[3]) != 'S')) {
3525 dev_warn(&h->pdev->dev, "not a valid CISS config table\n");
3531 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
3532 static inline void hpsa_enable_scsi_prefetch(struct ctlr_info *h)
3537 prefetch = readl(&(h->cfgtable->SCSI_Prefetch));
3539 writel(prefetch, &(h->cfgtable->SCSI_Prefetch));
3543 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
3544 * in a prefetch beyond physical memory.
3546 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
3550 if (h->board_id != 0x3225103C)
3552 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
3553 dma_prefetch |= 0x8000;
3554 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
3557 static void __devinit hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
3561 unsigned long flags;
3563 /* under certain very rare conditions, this can take awhile.
3564 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3565 * as we enter this code.)
3567 for (i = 0; i < MAX_CONFIG_WAIT; i++) {
3568 spin_lock_irqsave(&h->lock, flags);
3569 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
3570 spin_unlock_irqrestore(&h->lock, flags);
3571 if (!doorbell_value & CFGTBL_ChangeReq)
3573 /* delay and try again */
3578 static int __devinit hpsa_enter_simple_mode(struct ctlr_info *h)
3582 trans_support = readl(&(h->cfgtable->TransportSupport));
3583 if (!(trans_support & SIMPLE_MODE))
3586 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
3587 /* Update the field, and then ring the doorbell */
3588 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
3589 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
3590 hpsa_wait_for_mode_change_ack(h);
3591 print_cfg_table(&h->pdev->dev, h->cfgtable);
3592 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
3593 dev_warn(&h->pdev->dev,
3594 "unable to get board into simple mode\n");
3600 static int __devinit hpsa_pci_init(struct ctlr_info *h)
3602 int prod_index, err;
3604 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id);
3607 h->product_name = products[prod_index].product_name;
3608 h->access = *(products[prod_index].access);
3610 if (hpsa_board_disabled(h->pdev)) {
3611 dev_warn(&h->pdev->dev, "controller appears to be disabled\n");
3614 err = pci_enable_device(h->pdev);
3616 dev_warn(&h->pdev->dev, "unable to enable PCI device\n");
3620 err = pci_request_regions(h->pdev, "hpsa");
3622 dev_err(&h->pdev->dev,
3623 "cannot obtain PCI resources, aborting\n");
3626 hpsa_interrupt_mode(h);
3627 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
3629 goto err_out_free_res;
3630 h->vaddr = remap_pci_mem(h->paddr, 0x250);
3633 goto err_out_free_res;
3635 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
3637 goto err_out_free_res;
3638 err = hpsa_find_cfgtables(h);
3640 goto err_out_free_res;
3641 hpsa_find_board_params(h);
3643 if (!hpsa_CISS_signature_present(h)) {
3645 goto err_out_free_res;
3647 hpsa_enable_scsi_prefetch(h);
3648 hpsa_p600_dma_prefetch_quirk(h);
3649 err = hpsa_enter_simple_mode(h);
3651 goto err_out_free_res;
3656 iounmap(h->transtable);
3658 iounmap(h->cfgtable);
3662 * Deliberately omit pci_disable_device(): it does something nasty to
3663 * Smart Array controllers that pci_enable_device does not undo
3665 pci_release_regions(h->pdev);
3669 static void __devinit hpsa_hba_inquiry(struct ctlr_info *h)
3673 #define HBA_INQUIRY_BYTE_COUNT 64
3674 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
3675 if (!h->hba_inquiry_data)
3677 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
3678 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
3680 kfree(h->hba_inquiry_data);
3681 h->hba_inquiry_data = NULL;
3685 static __devinit int hpsa_init_reset_devices(struct pci_dev *pdev)
3692 /* Reset the controller with a PCI power-cycle or via doorbell */
3693 rc = hpsa_kdump_hard_reset_controller(pdev);
3695 /* -ENOTSUPP here means we cannot reset the controller
3696 * but it's already (and still) up and running in
3697 * "performant mode". Or, it might be 640x, which can't reset
3698 * due to concerns about shared bbwc between 6402/6404 pair.
3700 if (rc == -ENOTSUPP)
3701 return 0; /* just try to do the kdump anyhow. */
3705 /* Now try to get the controller to respond to a no-op */
3706 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
3707 if (hpsa_noop(pdev) == 0)
3710 dev_warn(&pdev->dev, "no-op failed%s\n",
3711 (i < 11 ? "; re-trying" : ""));
3716 static int __devinit hpsa_init_one(struct pci_dev *pdev,
3717 const struct pci_device_id *ent)
3720 struct ctlr_info *h;
3722 if (number_of_controllers == 0)
3723 printk(KERN_INFO DRIVER_NAME "\n");
3725 rc = hpsa_init_reset_devices(pdev);
3729 /* Command structures must be aligned on a 32-byte boundary because
3730 * the 5 lower bits of the address are used by the hardware. and by
3731 * the driver. See comments in hpsa.h for more info.
3733 #define COMMANDLIST_ALIGNMENT 32
3734 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
3735 h = kzalloc(sizeof(*h), GFP_KERNEL);
3740 h->busy_initializing = 1;
3741 INIT_HLIST_HEAD(&h->cmpQ);
3742 INIT_HLIST_HEAD(&h->reqQ);
3743 spin_lock_init(&h->lock);
3744 spin_lock_init(&h->scan_lock);
3745 rc = hpsa_pci_init(h);
3749 sprintf(h->devname, "hpsa%d", number_of_controllers);
3750 h->ctlr = number_of_controllers;
3751 number_of_controllers++;
3753 /* configure PCI DMA stuff */
3754 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
3758 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3762 dev_err(&pdev->dev, "no suitable DMA available\n");
3767 /* make sure the board interrupts are off */
3768 h->access.set_intr_mask(h, HPSA_INTR_OFF);
3770 if (h->msix_vector || h->msi_vector)
3771 rc = request_irq(h->intr[PERF_MODE_INT], do_hpsa_intr_msi,
3772 IRQF_DISABLED, h->devname, h);
3774 rc = request_irq(h->intr[PERF_MODE_INT], do_hpsa_intr_intx,
3775 IRQF_DISABLED, h->devname, h);
3777 dev_err(&pdev->dev, "unable to get irq %d for %s\n",
3778 h->intr[PERF_MODE_INT], h->devname);
3782 dev_info(&pdev->dev, "%s: <0x%x> at IRQ %d%s using DAC\n",
3783 h->devname, pdev->device,
3784 h->intr[PERF_MODE_INT], dac ? "" : " not");
3787 kmalloc(((h->nr_cmds + BITS_PER_LONG -
3788 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL);
3789 h->cmd_pool = pci_alloc_consistent(h->pdev,
3790 h->nr_cmds * sizeof(*h->cmd_pool),
3791 &(h->cmd_pool_dhandle));
3792 h->errinfo_pool = pci_alloc_consistent(h->pdev,
3793 h->nr_cmds * sizeof(*h->errinfo_pool),
3794 &(h->errinfo_pool_dhandle));
3795 if ((h->cmd_pool_bits == NULL)
3796 || (h->cmd_pool == NULL)
3797 || (h->errinfo_pool == NULL)) {
3798 dev_err(&pdev->dev, "out of memory");
3802 if (hpsa_allocate_sg_chain_blocks(h))
3804 init_waitqueue_head(&h->scan_wait_queue);
3805 h->scan_finished = 1; /* no scan currently in progress */
3807 pci_set_drvdata(pdev, h);
3808 memset(h->cmd_pool_bits, 0,
3809 ((h->nr_cmds + BITS_PER_LONG -
3810 1) / BITS_PER_LONG) * sizeof(unsigned long));
3814 /* Turn the interrupts on so we can service requests */
3815 h->access.set_intr_mask(h, HPSA_INTR_ON);
3817 hpsa_put_ctlr_into_performant_mode(h);
3818 hpsa_hba_inquiry(h);
3819 hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */
3820 h->busy_initializing = 0;
3824 hpsa_free_sg_chain_blocks(h);
3825 kfree(h->cmd_pool_bits);
3827 pci_free_consistent(h->pdev,
3828 h->nr_cmds * sizeof(struct CommandList),
3829 h->cmd_pool, h->cmd_pool_dhandle);
3830 if (h->errinfo_pool)
3831 pci_free_consistent(h->pdev,
3832 h->nr_cmds * sizeof(struct ErrorInfo),
3834 h->errinfo_pool_dhandle);
3835 free_irq(h->intr[PERF_MODE_INT], h);
3838 h->busy_initializing = 0;
3843 static void hpsa_flush_cache(struct ctlr_info *h)
3846 struct CommandList *c;
3848 flush_buf = kzalloc(4, GFP_KERNEL);
3852 c = cmd_special_alloc(h);
3854 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n");
3857 fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
3858 RAID_CTLR_LUNID, TYPE_CMD);
3859 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE);
3860 if (c->err_info->CommandStatus != 0)
3861 dev_warn(&h->pdev->dev,
3862 "error flushing cache on controller\n");
3863 cmd_special_free(h, c);
3868 static void hpsa_shutdown(struct pci_dev *pdev)
3870 struct ctlr_info *h;
3872 h = pci_get_drvdata(pdev);
3873 /* Turn board interrupts off and send the flush cache command
3874 * sendcmd will turn off interrupt, and send the flush...
3875 * To write all data in the battery backed cache to disks
3877 hpsa_flush_cache(h);
3878 h->access.set_intr_mask(h, HPSA_INTR_OFF);
3879 free_irq(h->intr[PERF_MODE_INT], h);
3880 #ifdef CONFIG_PCI_MSI
3882 pci_disable_msix(h->pdev);
3883 else if (h->msi_vector)
3884 pci_disable_msi(h->pdev);
3885 #endif /* CONFIG_PCI_MSI */
3888 static void __devexit hpsa_remove_one(struct pci_dev *pdev)
3890 struct ctlr_info *h;
3892 if (pci_get_drvdata(pdev) == NULL) {
3893 dev_err(&pdev->dev, "unable to remove device \n");
3896 h = pci_get_drvdata(pdev);
3897 hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */
3898 hpsa_shutdown(pdev);
3900 iounmap(h->transtable);
3901 iounmap(h->cfgtable);
3902 hpsa_free_sg_chain_blocks(h);
3903 pci_free_consistent(h->pdev,
3904 h->nr_cmds * sizeof(struct CommandList),
3905 h->cmd_pool, h->cmd_pool_dhandle);
3906 pci_free_consistent(h->pdev,
3907 h->nr_cmds * sizeof(struct ErrorInfo),
3908 h->errinfo_pool, h->errinfo_pool_dhandle);
3909 pci_free_consistent(h->pdev, h->reply_pool_size,
3910 h->reply_pool, h->reply_pool_dhandle);
3911 kfree(h->cmd_pool_bits);
3912 kfree(h->blockFetchTable);
3913 kfree(h->hba_inquiry_data);
3915 * Deliberately omit pci_disable_device(): it does something nasty to
3916 * Smart Array controllers that pci_enable_device does not undo
3918 pci_release_regions(pdev);
3919 pci_set_drvdata(pdev, NULL);
3923 static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
3924 __attribute__((unused)) pm_message_t state)
3929 static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
3934 static struct pci_driver hpsa_pci_driver = {
3936 .probe = hpsa_init_one,
3937 .remove = __devexit_p(hpsa_remove_one),
3938 .id_table = hpsa_pci_device_id, /* id_table */
3939 .shutdown = hpsa_shutdown,
3940 .suspend = hpsa_suspend,
3941 .resume = hpsa_resume,
3944 /* Fill in bucket_map[], given nsgs (the max number of
3945 * scatter gather elements supported) and bucket[],
3946 * which is an array of 8 integers. The bucket[] array
3947 * contains 8 different DMA transfer sizes (in 16
3948 * byte increments) which the controller uses to fetch
3949 * commands. This function fills in bucket_map[], which
3950 * maps a given number of scatter gather elements to one of
3951 * the 8 DMA transfer sizes. The point of it is to allow the
3952 * controller to only do as much DMA as needed to fetch the
3953 * command, with the DMA transfer size encoded in the lower
3954 * bits of the command address.
3956 static void calc_bucket_map(int bucket[], int num_buckets,
3957 int nsgs, int *bucket_map)
3961 /* even a command with 0 SGs requires 4 blocks */
3962 #define MINIMUM_TRANSFER_BLOCKS 4
3963 #define NUM_BUCKETS 8
3964 /* Note, bucket_map must have nsgs+1 entries. */
3965 for (i = 0; i <= nsgs; i++) {
3966 /* Compute size of a command with i SG entries */
3967 size = i + MINIMUM_TRANSFER_BLOCKS;
3968 b = num_buckets; /* Assume the biggest bucket */
3969 /* Find the bucket that is just big enough */
3970 for (j = 0; j < 8; j++) {
3971 if (bucket[j] >= size) {
3976 /* for a command with i SG entries, use bucket b. */
3981 static __devinit void hpsa_enter_performant_mode(struct ctlr_info *h)
3984 unsigned long register_value;
3986 /* This is a bit complicated. There are 8 registers on
3987 * the controller which we write to to tell it 8 different
3988 * sizes of commands which there may be. It's a way of
3989 * reducing the DMA done to fetch each command. Encoded into
3990 * each command's tag are 3 bits which communicate to the controller
3991 * which of the eight sizes that command fits within. The size of
3992 * each command depends on how many scatter gather entries there are.
3993 * Each SG entry requires 16 bytes. The eight registers are programmed
3994 * with the number of 16-byte blocks a command of that size requires.
3995 * The smallest command possible requires 5 such 16 byte blocks.
3996 * the largest command possible requires MAXSGENTRIES + 4 16-byte
3997 * blocks. Note, this only extends to the SG entries contained
3998 * within the command block, and does not extend to chained blocks
3999 * of SG elements. bft[] contains the eight values we write to
4000 * the registers. They are not evenly distributed, but have more
4001 * sizes for small commands, and fewer sizes for larger commands.
4003 int bft[8] = {5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4};
4004 BUILD_BUG_ON(28 > MAXSGENTRIES + 4);
4005 /* 5 = 1 s/g entry or 4k
4006 * 6 = 2 s/g entry or 8k
4007 * 8 = 4 s/g entry or 16k
4008 * 10 = 6 s/g entry or 24k
4011 h->reply_pool_wraparound = 1; /* spec: init to 1 */
4013 /* Controller spec: zero out this buffer. */
4014 memset(h->reply_pool, 0, h->reply_pool_size);
4015 h->reply_pool_head = h->reply_pool;
4017 bft[7] = h->max_sg_entries + 4;
4018 calc_bucket_map(bft, ARRAY_SIZE(bft), 32, h->blockFetchTable);
4019 for (i = 0; i < 8; i++)
4020 writel(bft[i], &h->transtable->BlockFetch[i]);
4022 /* size of controller ring buffer */
4023 writel(h->max_commands, &h->transtable->RepQSize);
4024 writel(1, &h->transtable->RepQCount);
4025 writel(0, &h->transtable->RepQCtrAddrLow32);
4026 writel(0, &h->transtable->RepQCtrAddrHigh32);
4027 writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32);
4028 writel(0, &h->transtable->RepQAddr0High32);
4029 writel(CFGTBL_Trans_Performant,
4030 &(h->cfgtable->HostWrite.TransportRequest));
4031 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
4032 hpsa_wait_for_mode_change_ack(h);
4033 register_value = readl(&(h->cfgtable->TransportActive));
4034 if (!(register_value & CFGTBL_Trans_Performant)) {
4035 dev_warn(&h->pdev->dev, "unable to get board into"
4036 " performant mode\n");
4041 static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
4045 if (hpsa_simple_mode)
4048 trans_support = readl(&(h->cfgtable->TransportSupport));
4049 if (!(trans_support & PERFORMANT_MODE))
4052 hpsa_get_max_perf_mode_cmds(h);
4053 h->max_sg_entries = 32;
4054 /* Performant mode ring buffer and supporting data structures */
4055 h->reply_pool_size = h->max_commands * sizeof(u64);
4056 h->reply_pool = pci_alloc_consistent(h->pdev, h->reply_pool_size,
4057 &(h->reply_pool_dhandle));
4059 /* Need a block fetch table for performant mode */
4060 h->blockFetchTable = kmalloc(((h->max_sg_entries+1) *
4061 sizeof(u32)), GFP_KERNEL);
4063 if ((h->reply_pool == NULL)
4064 || (h->blockFetchTable == NULL))
4067 hpsa_enter_performant_mode(h);
4069 /* Change the access methods to the performant access methods */
4070 h->access = SA5_performant_access;
4071 h->transMethod = CFGTBL_Trans_Performant;
4077 pci_free_consistent(h->pdev, h->reply_pool_size,
4078 h->reply_pool, h->reply_pool_dhandle);
4079 kfree(h->blockFetchTable);
4083 * This is it. Register the PCI driver information for the cards we control
4084 * the OS will call our registered routines when it finds one of our cards.
4086 static int __init hpsa_init(void)
4088 return pci_register_driver(&hpsa_pci_driver);
4091 static void __exit hpsa_cleanup(void)
4093 pci_unregister_driver(&hpsa_pci_driver);
4096 module_init(hpsa_init);
4097 module_exit(hpsa_cleanup);