2 * Disk Array driver for HP Smart Array SAS controllers
3 * Copyright 2000, 2009 Hewlett-Packard Development Company, L.P.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
12 * NON INFRINGEMENT. See the GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
22 #include <linux/module.h>
23 #include <linux/interrupt.h>
24 #include <linux/types.h>
25 #include <linux/pci.h>
26 #include <linux/kernel.h>
27 #include <linux/slab.h>
28 #include <linux/delay.h>
30 #include <linux/timer.h>
31 #include <linux/seq_file.h>
32 #include <linux/init.h>
33 #include <linux/spinlock.h>
34 #include <linux/smp_lock.h>
35 #include <linux/compat.h>
36 #include <linux/blktrace_api.h>
37 #include <linux/uaccess.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/completion.h>
41 #include <linux/moduleparam.h>
42 #include <scsi/scsi.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <scsi/scsi_device.h>
45 #include <scsi/scsi_host.h>
46 #include <linux/cciss_ioctl.h>
47 #include <linux/string.h>
48 #include <linux/bitmap.h>
49 #include <asm/atomic.h>
50 #include <linux/kthread.h>
54 /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */
55 #define HPSA_DRIVER_VERSION "2.0.1-3"
56 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
58 /* How long to wait (in milliseconds) for board to go into simple mode */
59 #define MAX_CONFIG_WAIT 30000
60 #define MAX_IOCTL_CONFIG_WAIT 1000
62 /*define how many times we will try a command because of bus resets */
63 #define MAX_CMD_RETRIES 3
65 /* Embedded module documentation macros - see modules.h */
66 MODULE_AUTHOR("Hewlett-Packard Company");
67 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
69 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
70 MODULE_VERSION(HPSA_DRIVER_VERSION
);
71 MODULE_LICENSE("GPL");
73 static int hpsa_allow_any
;
74 module_param(hpsa_allow_any
, int, S_IRUGO
|S_IWUSR
);
75 MODULE_PARM_DESC(hpsa_allow_any
,
76 "Allow hpsa driver to access unknown HP Smart Array hardware");
78 /* define the PCI info for the cards we can control */
79 static const struct pci_device_id hpsa_pci_device_id
[] = {
80 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3241},
81 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3243},
82 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3245},
83 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3247},
84 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3249},
85 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x324a},
86 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x324b},
87 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3233},
88 #define PCI_DEVICE_ID_HP_CISSF 0x333f
89 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x333F},
90 {PCI_VENDOR_ID_HP
, PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
,
91 PCI_CLASS_STORAGE_RAID
<< 8, 0xffff << 8, 0},
95 MODULE_DEVICE_TABLE(pci
, hpsa_pci_device_id
);
97 /* board_id = Subsystem Device ID & Vendor ID
98 * product = Marketing Name for the board
99 * access = Address of the struct of function pointers
101 static struct board_type products
[] = {
102 {0x3241103C, "Smart Array P212", &SA5_access
},
103 {0x3243103C, "Smart Array P410", &SA5_access
},
104 {0x3245103C, "Smart Array P410i", &SA5_access
},
105 {0x3247103C, "Smart Array P411", &SA5_access
},
106 {0x3249103C, "Smart Array P812", &SA5_access
},
107 {0x324a103C, "Smart Array P712m", &SA5_access
},
108 {0x324b103C, "Smart Array P711m", &SA5_access
},
109 {0x3233103C, "StorageWorks P1210m", &SA5_access
},
110 {0x333F103C, "StorageWorks P1210m", &SA5_access
},
111 {0xFFFF103C, "Unknown Smart Array", &SA5_access
},
114 static int number_of_controllers
;
116 static irqreturn_t
do_hpsa_intr(int irq
, void *dev_id
);
117 static int hpsa_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
);
118 static void start_io(struct ctlr_info
*h
);
121 static int hpsa_compat_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
);
124 static void cmd_free(struct ctlr_info
*h
, struct CommandList
*c
);
125 static void cmd_special_free(struct ctlr_info
*h
, struct CommandList
*c
);
126 static struct CommandList
*cmd_alloc(struct ctlr_info
*h
);
127 static struct CommandList
*cmd_special_alloc(struct ctlr_info
*h
);
128 static void fill_cmd(struct CommandList
*c
, u8 cmd
, struct ctlr_info
*h
,
129 void *buff
, size_t size
, u8 page_code
, unsigned char *scsi3addr
,
132 static int hpsa_scsi_queue_command(struct scsi_cmnd
*cmd
,
133 void (*done
)(struct scsi_cmnd
*));
134 static void hpsa_scan_start(struct Scsi_Host
*);
135 static int hpsa_scan_finished(struct Scsi_Host
*sh
,
136 unsigned long elapsed_time
);
138 static int hpsa_eh_device_reset_handler(struct scsi_cmnd
*scsicmd
);
139 static int hpsa_slave_alloc(struct scsi_device
*sdev
);
140 static void hpsa_slave_destroy(struct scsi_device
*sdev
);
142 static ssize_t
raid_level_show(struct device
*dev
,
143 struct device_attribute
*attr
, char *buf
);
144 static ssize_t
lunid_show(struct device
*dev
,
145 struct device_attribute
*attr
, char *buf
);
146 static ssize_t
unique_id_show(struct device
*dev
,
147 struct device_attribute
*attr
, char *buf
);
148 static void hpsa_update_scsi_devices(struct ctlr_info
*h
, int hostno
);
149 static ssize_t
host_store_rescan(struct device
*dev
,
150 struct device_attribute
*attr
, const char *buf
, size_t count
);
151 static int check_for_unit_attention(struct ctlr_info
*h
,
152 struct CommandList
*c
);
153 static void check_ioctl_unit_attention(struct ctlr_info
*h
,
154 struct CommandList
*c
);
155 /* performant mode helper functions */
156 static void calc_bucket_map(int *bucket
, int num_buckets
,
157 int nsgs
, int *bucket_map
);
158 static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info
*h
);
159 static inline u32
next_command(struct ctlr_info
*h
);
161 static DEVICE_ATTR(raid_level
, S_IRUGO
, raid_level_show
, NULL
);
162 static DEVICE_ATTR(lunid
, S_IRUGO
, lunid_show
, NULL
);
163 static DEVICE_ATTR(unique_id
, S_IRUGO
, unique_id_show
, NULL
);
164 static DEVICE_ATTR(rescan
, S_IWUSR
, NULL
, host_store_rescan
);
166 static struct device_attribute
*hpsa_sdev_attrs
[] = {
167 &dev_attr_raid_level
,
173 static struct device_attribute
*hpsa_shost_attrs
[] = {
178 static struct scsi_host_template hpsa_driver_template
= {
179 .module
= THIS_MODULE
,
182 .queuecommand
= hpsa_scsi_queue_command
,
183 .scan_start
= hpsa_scan_start
,
184 .scan_finished
= hpsa_scan_finished
,
186 .sg_tablesize
= MAXSGENTRIES
,
187 .use_clustering
= ENABLE_CLUSTERING
,
188 .eh_device_reset_handler
= hpsa_eh_device_reset_handler
,
190 .slave_alloc
= hpsa_slave_alloc
,
191 .slave_destroy
= hpsa_slave_destroy
,
193 .compat_ioctl
= hpsa_compat_ioctl
,
195 .sdev_attrs
= hpsa_sdev_attrs
,
196 .shost_attrs
= hpsa_shost_attrs
,
199 static inline struct ctlr_info
*sdev_to_hba(struct scsi_device
*sdev
)
201 unsigned long *priv
= shost_priv(sdev
->host
);
202 return (struct ctlr_info
*) *priv
;
205 static inline struct ctlr_info
*shost_to_hba(struct Scsi_Host
*sh
)
207 unsigned long *priv
= shost_priv(sh
);
208 return (struct ctlr_info
*) *priv
;
211 static struct task_struct
*hpsa_scan_thread
;
212 static DEFINE_MUTEX(hpsa_scan_mutex
);
213 static LIST_HEAD(hpsa_scan_q
);
214 static int hpsa_scan_func(void *data
);
217 * add_to_scan_list() - add controller to rescan queue
218 * @h: Pointer to the controller.
220 * Adds the controller to the rescan queue if not already on the queue.
222 * returns 1 if added to the queue, 0 if skipped (could be on the
223 * queue already, or the controller could be initializing or shutting
226 static int add_to_scan_list(struct ctlr_info
*h
)
228 struct ctlr_info
*test_h
;
232 if (h
->busy_initializing
)
236 * If we don't get the lock, it means the driver is unloading
237 * and there's no point in scheduling a new scan.
239 if (!mutex_trylock(&h
->busy_shutting_down
))
242 mutex_lock(&hpsa_scan_mutex
);
243 list_for_each_entry(test_h
, &hpsa_scan_q
, scan_list
) {
249 if (!found
&& !h
->busy_scanning
) {
250 INIT_COMPLETION(h
->scan_wait
);
251 list_add_tail(&h
->scan_list
, &hpsa_scan_q
);
254 mutex_unlock(&hpsa_scan_mutex
);
255 mutex_unlock(&h
->busy_shutting_down
);
261 * remove_from_scan_list() - remove controller from rescan queue
262 * @h: Pointer to the controller.
264 * Removes the controller from the rescan queue if present. Blocks if
265 * the controller is currently conducting a rescan. The controller
266 * can be in one of three states:
267 * 1. Doesn't need a scan
268 * 2. On the scan list, but not scanning yet (we remove it)
269 * 3. Busy scanning (and not on the list). In this case we want to wait for
270 * the scan to complete to make sure the scanning thread for this
271 * controller is completely idle.
273 static void remove_from_scan_list(struct ctlr_info
*h
)
275 struct ctlr_info
*test_h
, *tmp_h
;
277 mutex_lock(&hpsa_scan_mutex
);
278 list_for_each_entry_safe(test_h
, tmp_h
, &hpsa_scan_q
, scan_list
) {
279 if (test_h
== h
) { /* state 2. */
280 list_del(&h
->scan_list
);
281 complete_all(&h
->scan_wait
);
282 mutex_unlock(&hpsa_scan_mutex
);
286 if (h
->busy_scanning
) { /* state 3. */
287 mutex_unlock(&hpsa_scan_mutex
);
288 wait_for_completion(&h
->scan_wait
);
289 } else { /* state 1, nothing to do. */
290 mutex_unlock(&hpsa_scan_mutex
);
294 /* hpsa_scan_func() - kernel thread used to rescan controllers
297 * A kernel thread used scan for drive topology changes on
298 * controllers. The thread processes only one controller at a time
299 * using a queue. Controllers are added to the queue using
300 * add_to_scan_list() and removed from the queue either after done
301 * processing or using remove_from_scan_list().
305 static int hpsa_scan_func(__attribute__((unused
)) void *data
)
311 set_current_state(TASK_INTERRUPTIBLE
);
313 if (kthread_should_stop())
317 mutex_lock(&hpsa_scan_mutex
);
318 if (list_empty(&hpsa_scan_q
)) {
319 mutex_unlock(&hpsa_scan_mutex
);
322 h
= list_entry(hpsa_scan_q
.next
, struct ctlr_info
,
324 list_del(&h
->scan_list
);
325 h
->busy_scanning
= 1;
326 mutex_unlock(&hpsa_scan_mutex
);
327 host_no
= h
->scsi_host
? h
->scsi_host
->host_no
: -1;
328 hpsa_scan_start(h
->scsi_host
);
329 complete_all(&h
->scan_wait
);
330 mutex_lock(&hpsa_scan_mutex
);
331 h
->busy_scanning
= 0;
332 mutex_unlock(&hpsa_scan_mutex
);
338 static int check_for_unit_attention(struct ctlr_info
*h
,
339 struct CommandList
*c
)
341 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
344 switch (c
->err_info
->SenseInfo
[12]) {
346 dev_warn(&h
->pdev
->dev
, "hpsa%d: a state change "
347 "detected, command retried\n", h
->ctlr
);
350 dev_warn(&h
->pdev
->dev
, "hpsa%d: LUN failure "
351 "detected, action required\n", h
->ctlr
);
353 case REPORT_LUNS_CHANGED
:
354 dev_warn(&h
->pdev
->dev
, "hpsa%d: report LUN data "
355 "changed\n", h
->ctlr
);
357 * Here, we could call add_to_scan_list and wake up the scan thread,
358 * except that it's quite likely that we will get more than one
359 * REPORT_LUNS_CHANGED condition in quick succession, which means
360 * that those which occur after the first one will likely happen
361 * *during* the hpsa_scan_thread's rescan. And the rescan code is not
362 * robust enough to restart in the middle, undoing what it has already
363 * done, and it's not clear that it's even possible to do this, since
364 * part of what it does is notify the SCSI mid layer, which starts
365 * doing it's own i/o to read partition tables and so on, and the
366 * driver doesn't have visibility to know what might need undoing.
367 * In any event, if possible, it is horribly complicated to get right
368 * so we just don't do it for now.
370 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
374 dev_warn(&h
->pdev
->dev
, "hpsa%d: a power on "
375 "or device reset detected\n", h
->ctlr
);
377 case UNIT_ATTENTION_CLEARED
:
378 dev_warn(&h
->pdev
->dev
, "hpsa%d: unit attention "
379 "cleared by another initiator\n", h
->ctlr
);
382 dev_warn(&h
->pdev
->dev
, "hpsa%d: unknown "
383 "unit attention detected\n", h
->ctlr
);
389 static ssize_t
host_store_rescan(struct device
*dev
,
390 struct device_attribute
*attr
,
391 const char *buf
, size_t count
)
394 struct Scsi_Host
*shost
= class_to_shost(dev
);
395 h
= shost_to_hba(shost
);
396 if (add_to_scan_list(h
)) {
397 wake_up_process(hpsa_scan_thread
);
398 wait_for_completion_interruptible(&h
->scan_wait
);
403 /* Enqueuing and dequeuing functions for cmdlists. */
404 static inline void addQ(struct hlist_head
*list
, struct CommandList
*c
)
406 hlist_add_head(&c
->list
, list
);
409 static inline u32
next_command(struct ctlr_info
*h
)
413 if (unlikely(h
->transMethod
!= CFGTBL_Trans_Performant
))
414 return h
->access
.command_completed(h
);
416 if ((*(h
->reply_pool_head
) & 1) == (h
->reply_pool_wraparound
)) {
417 a
= *(h
->reply_pool_head
); /* Next cmd in ring buffer */
418 (h
->reply_pool_head
)++;
419 h
->commands_outstanding
--;
423 /* Check for wraparound */
424 if (h
->reply_pool_head
== (h
->reply_pool
+ h
->max_commands
)) {
425 h
->reply_pool_head
= h
->reply_pool
;
426 h
->reply_pool_wraparound
^= 1;
431 /* set_performant_mode: Modify the tag for cciss performant
432 * set bit 0 for pull model, bits 3-1 for block fetch
435 static void set_performant_mode(struct ctlr_info
*h
, struct CommandList
*c
)
437 if (likely(h
->transMethod
== CFGTBL_Trans_Performant
))
438 c
->busaddr
|= 1 | (h
->blockFetchTable
[c
->Header
.SGList
] << 1);
441 static void enqueue_cmd_and_start_io(struct ctlr_info
*h
,
442 struct CommandList
*c
)
446 set_performant_mode(h
, c
);
447 spin_lock_irqsave(&h
->lock
, flags
);
451 spin_unlock_irqrestore(&h
->lock
, flags
);
454 static inline void removeQ(struct CommandList
*c
)
456 if (WARN_ON(hlist_unhashed(&c
->list
)))
458 hlist_del_init(&c
->list
);
461 static inline int is_hba_lunid(unsigned char scsi3addr
[])
463 return memcmp(scsi3addr
, RAID_CTLR_LUNID
, 8) == 0;
466 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr
[])
468 return (scsi3addr
[3] & 0xC0) == 0x40;
471 static inline int is_scsi_rev_5(struct ctlr_info
*h
)
473 if (!h
->hba_inquiry_data
)
475 if ((h
->hba_inquiry_data
[2] & 0x07) == 5)
480 static const char *raid_label
[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
483 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
485 static ssize_t
raid_level_show(struct device
*dev
,
486 struct device_attribute
*attr
, char *buf
)
489 unsigned char rlevel
;
491 struct scsi_device
*sdev
;
492 struct hpsa_scsi_dev_t
*hdev
;
495 sdev
= to_scsi_device(dev
);
496 h
= sdev_to_hba(sdev
);
497 spin_lock_irqsave(&h
->lock
, flags
);
498 hdev
= sdev
->hostdata
;
500 spin_unlock_irqrestore(&h
->lock
, flags
);
504 /* Is this even a logical drive? */
505 if (!is_logical_dev_addr_mode(hdev
->scsi3addr
)) {
506 spin_unlock_irqrestore(&h
->lock
, flags
);
507 l
= snprintf(buf
, PAGE_SIZE
, "N/A\n");
511 rlevel
= hdev
->raid_level
;
512 spin_unlock_irqrestore(&h
->lock
, flags
);
513 if (rlevel
> RAID_UNKNOWN
)
514 rlevel
= RAID_UNKNOWN
;
515 l
= snprintf(buf
, PAGE_SIZE
, "RAID %s\n", raid_label
[rlevel
]);
519 static ssize_t
lunid_show(struct device
*dev
,
520 struct device_attribute
*attr
, char *buf
)
523 struct scsi_device
*sdev
;
524 struct hpsa_scsi_dev_t
*hdev
;
526 unsigned char lunid
[8];
528 sdev
= to_scsi_device(dev
);
529 h
= sdev_to_hba(sdev
);
530 spin_lock_irqsave(&h
->lock
, flags
);
531 hdev
= sdev
->hostdata
;
533 spin_unlock_irqrestore(&h
->lock
, flags
);
536 memcpy(lunid
, hdev
->scsi3addr
, sizeof(lunid
));
537 spin_unlock_irqrestore(&h
->lock
, flags
);
538 return snprintf(buf
, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
539 lunid
[0], lunid
[1], lunid
[2], lunid
[3],
540 lunid
[4], lunid
[5], lunid
[6], lunid
[7]);
543 static ssize_t
unique_id_show(struct device
*dev
,
544 struct device_attribute
*attr
, char *buf
)
547 struct scsi_device
*sdev
;
548 struct hpsa_scsi_dev_t
*hdev
;
550 unsigned char sn
[16];
552 sdev
= to_scsi_device(dev
);
553 h
= sdev_to_hba(sdev
);
554 spin_lock_irqsave(&h
->lock
, flags
);
555 hdev
= sdev
->hostdata
;
557 spin_unlock_irqrestore(&h
->lock
, flags
);
560 memcpy(sn
, hdev
->device_id
, sizeof(sn
));
561 spin_unlock_irqrestore(&h
->lock
, flags
);
562 return snprintf(buf
, 16 * 2 + 2,
563 "%02X%02X%02X%02X%02X%02X%02X%02X"
564 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
565 sn
[0], sn
[1], sn
[2], sn
[3],
566 sn
[4], sn
[5], sn
[6], sn
[7],
567 sn
[8], sn
[9], sn
[10], sn
[11],
568 sn
[12], sn
[13], sn
[14], sn
[15]);
571 static int hpsa_find_target_lun(struct ctlr_info
*h
,
572 unsigned char scsi3addr
[], int bus
, int *target
, int *lun
)
574 /* finds an unused bus, target, lun for a new physical device
575 * assumes h->devlock is held
578 DECLARE_BITMAP(lun_taken
, HPSA_MAX_SCSI_DEVS_PER_HBA
);
580 memset(&lun_taken
[0], 0, HPSA_MAX_SCSI_DEVS_PER_HBA
>> 3);
582 for (i
= 0; i
< h
->ndevices
; i
++) {
583 if (h
->dev
[i
]->bus
== bus
&& h
->dev
[i
]->target
!= -1)
584 set_bit(h
->dev
[i
]->target
, lun_taken
);
587 for (i
= 0; i
< HPSA_MAX_SCSI_DEVS_PER_HBA
; i
++) {
588 if (!test_bit(i
, lun_taken
)) {
599 /* Add an entry into h->dev[] array. */
600 static int hpsa_scsi_add_entry(struct ctlr_info
*h
, int hostno
,
601 struct hpsa_scsi_dev_t
*device
,
602 struct hpsa_scsi_dev_t
*added
[], int *nadded
)
604 /* assumes h->devlock is held */
607 unsigned char addr1
[8], addr2
[8];
608 struct hpsa_scsi_dev_t
*sd
;
610 if (n
>= HPSA_MAX_SCSI_DEVS_PER_HBA
) {
611 dev_err(&h
->pdev
->dev
, "too many devices, some will be "
616 /* physical devices do not have lun or target assigned until now. */
617 if (device
->lun
!= -1)
618 /* Logical device, lun is already assigned. */
621 /* If this device a non-zero lun of a multi-lun device
622 * byte 4 of the 8-byte LUN addr will contain the logical
623 * unit no, zero otherise.
625 if (device
->scsi3addr
[4] == 0) {
626 /* This is not a non-zero lun of a multi-lun device */
627 if (hpsa_find_target_lun(h
, device
->scsi3addr
,
628 device
->bus
, &device
->target
, &device
->lun
) != 0)
633 /* This is a non-zero lun of a multi-lun device.
634 * Search through our list and find the device which
635 * has the same 8 byte LUN address, excepting byte 4.
636 * Assign the same bus and target for this new LUN.
637 * Use the logical unit number from the firmware.
639 memcpy(addr1
, device
->scsi3addr
, 8);
641 for (i
= 0; i
< n
; i
++) {
643 memcpy(addr2
, sd
->scsi3addr
, 8);
645 /* differ only in byte 4? */
646 if (memcmp(addr1
, addr2
, 8) == 0) {
647 device
->bus
= sd
->bus
;
648 device
->target
= sd
->target
;
649 device
->lun
= device
->scsi3addr
[4];
653 if (device
->lun
== -1) {
654 dev_warn(&h
->pdev
->dev
, "physical device with no LUN=0,"
655 " suspect firmware bug or unsupported hardware "
664 added
[*nadded
] = device
;
667 /* initially, (before registering with scsi layer) we don't
668 * know our hostno and we don't want to print anything first
669 * time anyway (the scsi layer's inquiries will show that info)
671 /* if (hostno != -1) */
672 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d added.\n",
673 scsi_device_type(device
->devtype
), hostno
,
674 device
->bus
, device
->target
, device
->lun
);
678 /* Replace an entry from h->dev[] array. */
679 static void hpsa_scsi_replace_entry(struct ctlr_info
*h
, int hostno
,
680 int entry
, struct hpsa_scsi_dev_t
*new_entry
,
681 struct hpsa_scsi_dev_t
*added
[], int *nadded
,
682 struct hpsa_scsi_dev_t
*removed
[], int *nremoved
)
684 /* assumes h->devlock is held */
685 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_SCSI_DEVS_PER_HBA
);
686 removed
[*nremoved
] = h
->dev
[entry
];
688 h
->dev
[entry
] = new_entry
;
689 added
[*nadded
] = new_entry
;
691 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d changed.\n",
692 scsi_device_type(new_entry
->devtype
), hostno
, new_entry
->bus
,
693 new_entry
->target
, new_entry
->lun
);
696 /* Remove an entry from h->dev[] array. */
697 static void hpsa_scsi_remove_entry(struct ctlr_info
*h
, int hostno
, int entry
,
698 struct hpsa_scsi_dev_t
*removed
[], int *nremoved
)
700 /* assumes h->devlock is held */
702 struct hpsa_scsi_dev_t
*sd
;
704 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_SCSI_DEVS_PER_HBA
);
707 removed
[*nremoved
] = h
->dev
[entry
];
710 for (i
= entry
; i
< h
->ndevices
-1; i
++)
711 h
->dev
[i
] = h
->dev
[i
+1];
713 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d removed.\n",
714 scsi_device_type(sd
->devtype
), hostno
, sd
->bus
, sd
->target
,
718 #define SCSI3ADDR_EQ(a, b) ( \
719 (a)[7] == (b)[7] && \
720 (a)[6] == (b)[6] && \
721 (a)[5] == (b)[5] && \
722 (a)[4] == (b)[4] && \
723 (a)[3] == (b)[3] && \
724 (a)[2] == (b)[2] && \
725 (a)[1] == (b)[1] && \
728 static void fixup_botched_add(struct ctlr_info
*h
,
729 struct hpsa_scsi_dev_t
*added
)
731 /* called when scsi_add_device fails in order to re-adjust
732 * h->dev[] to match the mid layer's view.
737 spin_lock_irqsave(&h
->lock
, flags
);
738 for (i
= 0; i
< h
->ndevices
; i
++) {
739 if (h
->dev
[i
] == added
) {
740 for (j
= i
; j
< h
->ndevices
-1; j
++)
741 h
->dev
[j
] = h
->dev
[j
+1];
746 spin_unlock_irqrestore(&h
->lock
, flags
);
750 static inline int device_is_the_same(struct hpsa_scsi_dev_t
*dev1
,
751 struct hpsa_scsi_dev_t
*dev2
)
753 if ((is_logical_dev_addr_mode(dev1
->scsi3addr
) ||
754 (dev1
->lun
!= -1 && dev2
->lun
!= -1)) &&
755 dev1
->devtype
!= 0x0C)
756 return (memcmp(dev1
, dev2
, sizeof(*dev1
)) == 0);
758 /* we compare everything except lun and target as these
759 * are not yet assigned. Compare parts likely
762 if (memcmp(dev1
->scsi3addr
, dev2
->scsi3addr
,
763 sizeof(dev1
->scsi3addr
)) != 0)
765 if (memcmp(dev1
->device_id
, dev2
->device_id
,
766 sizeof(dev1
->device_id
)) != 0)
768 if (memcmp(dev1
->model
, dev2
->model
, sizeof(dev1
->model
)) != 0)
770 if (memcmp(dev1
->vendor
, dev2
->vendor
, sizeof(dev1
->vendor
)) != 0)
772 if (memcmp(dev1
->revision
, dev2
->revision
, sizeof(dev1
->revision
)) != 0)
774 if (dev1
->devtype
!= dev2
->devtype
)
776 if (dev1
->raid_level
!= dev2
->raid_level
)
778 if (dev1
->bus
!= dev2
->bus
)
783 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
784 * and return needle location in *index. If scsi3addr matches, but not
785 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
786 * location in *index. If needle not found, return DEVICE_NOT_FOUND.
788 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t
*needle
,
789 struct hpsa_scsi_dev_t
*haystack
[], int haystack_size
,
793 #define DEVICE_NOT_FOUND 0
794 #define DEVICE_CHANGED 1
795 #define DEVICE_SAME 2
796 for (i
= 0; i
< haystack_size
; i
++) {
797 if (haystack
[i
] == NULL
) /* previously removed. */
799 if (SCSI3ADDR_EQ(needle
->scsi3addr
, haystack
[i
]->scsi3addr
)) {
801 if (device_is_the_same(needle
, haystack
[i
]))
804 return DEVICE_CHANGED
;
808 return DEVICE_NOT_FOUND
;
811 static void adjust_hpsa_scsi_table(struct ctlr_info
*h
, int hostno
,
812 struct hpsa_scsi_dev_t
*sd
[], int nsds
)
814 /* sd contains scsi3 addresses and devtypes, and inquiry
815 * data. This function takes what's in sd to be the current
816 * reality and updates h->dev[] to reflect that reality.
818 int i
, entry
, device_change
, changes
= 0;
819 struct hpsa_scsi_dev_t
*csd
;
821 struct hpsa_scsi_dev_t
**added
, **removed
;
822 int nadded
, nremoved
;
823 struct Scsi_Host
*sh
= NULL
;
825 added
= kzalloc(sizeof(*added
) * HPSA_MAX_SCSI_DEVS_PER_HBA
,
827 removed
= kzalloc(sizeof(*removed
) * HPSA_MAX_SCSI_DEVS_PER_HBA
,
830 if (!added
|| !removed
) {
831 dev_warn(&h
->pdev
->dev
, "out of memory in "
832 "adjust_hpsa_scsi_table\n");
836 spin_lock_irqsave(&h
->devlock
, flags
);
838 /* find any devices in h->dev[] that are not in
839 * sd[] and remove them from h->dev[], and for any
840 * devices which have changed, remove the old device
841 * info and add the new device info.
846 while (i
< h
->ndevices
) {
848 device_change
= hpsa_scsi_find_entry(csd
, sd
, nsds
, &entry
);
849 if (device_change
== DEVICE_NOT_FOUND
) {
851 hpsa_scsi_remove_entry(h
, hostno
, i
,
853 continue; /* remove ^^^, hence i not incremented */
854 } else if (device_change
== DEVICE_CHANGED
) {
856 hpsa_scsi_replace_entry(h
, hostno
, i
, sd
[entry
],
857 added
, &nadded
, removed
, &nremoved
);
858 /* Set it to NULL to prevent it from being freed
859 * at the bottom of hpsa_update_scsi_devices()
866 /* Now, make sure every device listed in sd[] is also
867 * listed in h->dev[], adding them if they aren't found
870 for (i
= 0; i
< nsds
; i
++) {
871 if (!sd
[i
]) /* if already added above. */
873 device_change
= hpsa_scsi_find_entry(sd
[i
], h
->dev
,
874 h
->ndevices
, &entry
);
875 if (device_change
== DEVICE_NOT_FOUND
) {
877 if (hpsa_scsi_add_entry(h
, hostno
, sd
[i
],
878 added
, &nadded
) != 0)
880 sd
[i
] = NULL
; /* prevent from being freed later. */
881 } else if (device_change
== DEVICE_CHANGED
) {
882 /* should never happen... */
884 dev_warn(&h
->pdev
->dev
,
885 "device unexpectedly changed.\n");
886 /* but if it does happen, we just ignore that device */
889 spin_unlock_irqrestore(&h
->devlock
, flags
);
891 /* Don't notify scsi mid layer of any changes the first time through
892 * (or if there are no changes) scsi_scan_host will do it later the
893 * first time through.
895 if (hostno
== -1 || !changes
)
899 /* Notify scsi mid layer of any removed devices */
900 for (i
= 0; i
< nremoved
; i
++) {
901 struct scsi_device
*sdev
=
902 scsi_device_lookup(sh
, removed
[i
]->bus
,
903 removed
[i
]->target
, removed
[i
]->lun
);
905 scsi_remove_device(sdev
);
906 scsi_device_put(sdev
);
908 /* We don't expect to get here.
909 * future cmds to this device will get selection
910 * timeout as if the device was gone.
912 dev_warn(&h
->pdev
->dev
, "didn't find c%db%dt%dl%d "
913 " for removal.", hostno
, removed
[i
]->bus
,
914 removed
[i
]->target
, removed
[i
]->lun
);
920 /* Notify scsi mid layer of any added devices */
921 for (i
= 0; i
< nadded
; i
++) {
922 if (scsi_add_device(sh
, added
[i
]->bus
,
923 added
[i
]->target
, added
[i
]->lun
) == 0)
925 dev_warn(&h
->pdev
->dev
, "scsi_add_device c%db%dt%dl%d failed, "
926 "device not added.\n", hostno
, added
[i
]->bus
,
927 added
[i
]->target
, added
[i
]->lun
);
928 /* now we have to remove it from h->dev,
929 * since it didn't get added to scsi mid layer
931 fixup_botched_add(h
, added
[i
]);
940 * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t *
941 * Assume's h->devlock is held.
943 static struct hpsa_scsi_dev_t
*lookup_hpsa_scsi_dev(struct ctlr_info
*h
,
944 int bus
, int target
, int lun
)
947 struct hpsa_scsi_dev_t
*sd
;
949 for (i
= 0; i
< h
->ndevices
; i
++) {
951 if (sd
->bus
== bus
&& sd
->target
== target
&& sd
->lun
== lun
)
957 /* link sdev->hostdata to our per-device structure. */
958 static int hpsa_slave_alloc(struct scsi_device
*sdev
)
960 struct hpsa_scsi_dev_t
*sd
;
964 h
= sdev_to_hba(sdev
);
965 spin_lock_irqsave(&h
->devlock
, flags
);
966 sd
= lookup_hpsa_scsi_dev(h
, sdev_channel(sdev
),
967 sdev_id(sdev
), sdev
->lun
);
970 spin_unlock_irqrestore(&h
->devlock
, flags
);
974 static void hpsa_slave_destroy(struct scsi_device
*sdev
)
979 static void hpsa_scsi_setup(struct ctlr_info
*h
)
983 spin_lock_init(&h
->devlock
);
986 static void complete_scsi_command(struct CommandList
*cp
,
987 int timeout
, u32 tag
)
989 struct scsi_cmnd
*cmd
;
991 struct ErrorInfo
*ei
;
993 unsigned char sense_key
;
994 unsigned char asc
; /* additional sense code */
995 unsigned char ascq
; /* additional sense code qualifier */
998 cmd
= (struct scsi_cmnd
*) cp
->scsi_cmd
;
1001 scsi_dma_unmap(cmd
); /* undo the DMA mappings */
1003 cmd
->result
= (DID_OK
<< 16); /* host byte */
1004 cmd
->result
|= (COMMAND_COMPLETE
<< 8); /* msg byte */
1005 cmd
->result
|= (ei
->ScsiStatus
<< 1);
1007 /* copy the sense data whether we need to or not. */
1008 memcpy(cmd
->sense_buffer
, ei
->SenseInfo
,
1009 ei
->SenseLen
> SCSI_SENSE_BUFFERSIZE
?
1010 SCSI_SENSE_BUFFERSIZE
:
1012 scsi_set_resid(cmd
, ei
->ResidualCnt
);
1014 if (ei
->CommandStatus
== 0) {
1015 cmd
->scsi_done(cmd
);
1020 /* an error has occurred */
1021 switch (ei
->CommandStatus
) {
1023 case CMD_TARGET_STATUS
:
1024 if (ei
->ScsiStatus
) {
1026 sense_key
= 0xf & ei
->SenseInfo
[2];
1027 /* Get additional sense code */
1028 asc
= ei
->SenseInfo
[12];
1029 /* Get addition sense code qualifier */
1030 ascq
= ei
->SenseInfo
[13];
1033 if (ei
->ScsiStatus
== SAM_STAT_CHECK_CONDITION
) {
1034 if (check_for_unit_attention(h
, cp
)) {
1035 cmd
->result
= DID_SOFT_ERROR
<< 16;
1038 if (sense_key
== ILLEGAL_REQUEST
) {
1040 * SCSI REPORT_LUNS is commonly unsupported on
1041 * Smart Array. Suppress noisy complaint.
1043 if (cp
->Request
.CDB
[0] == REPORT_LUNS
)
1046 /* If ASC/ASCQ indicate Logical Unit
1047 * Not Supported condition,
1049 if ((asc
== 0x25) && (ascq
== 0x0)) {
1050 dev_warn(&h
->pdev
->dev
, "cp %p "
1051 "has check condition\n", cp
);
1056 if (sense_key
== NOT_READY
) {
1057 /* If Sense is Not Ready, Logical Unit
1058 * Not ready, Manual Intervention
1061 if ((asc
== 0x04) && (ascq
== 0x03)) {
1062 dev_warn(&h
->pdev
->dev
, "cp %p "
1063 "has check condition: unit "
1064 "not ready, manual "
1065 "intervention required\n", cp
);
1069 if (sense_key
== ABORTED_COMMAND
) {
1070 /* Aborted command is retryable */
1071 dev_warn(&h
->pdev
->dev
, "cp %p "
1072 "has check condition: aborted command: "
1073 "ASC: 0x%x, ASCQ: 0x%x\n",
1075 cmd
->result
= DID_SOFT_ERROR
<< 16;
1078 /* Must be some other type of check condition */
1079 dev_warn(&h
->pdev
->dev
, "cp %p has check condition: "
1081 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1082 "Returning result: 0x%x, "
1083 "cmd=[%02x %02x %02x %02x %02x "
1084 "%02x %02x %02x %02x %02x %02x "
1085 "%02x %02x %02x %02x %02x]\n",
1086 cp
, sense_key
, asc
, ascq
,
1088 cmd
->cmnd
[0], cmd
->cmnd
[1],
1089 cmd
->cmnd
[2], cmd
->cmnd
[3],
1090 cmd
->cmnd
[4], cmd
->cmnd
[5],
1091 cmd
->cmnd
[6], cmd
->cmnd
[7],
1092 cmd
->cmnd
[8], cmd
->cmnd
[9],
1093 cmd
->cmnd
[10], cmd
->cmnd
[11],
1094 cmd
->cmnd
[12], cmd
->cmnd
[13],
1095 cmd
->cmnd
[14], cmd
->cmnd
[15]);
1100 /* Problem was not a check condition
1101 * Pass it up to the upper layers...
1103 if (ei
->ScsiStatus
) {
1104 dev_warn(&h
->pdev
->dev
, "cp %p has status 0x%x "
1105 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1106 "Returning result: 0x%x\n",
1108 sense_key
, asc
, ascq
,
1110 } else { /* scsi status is zero??? How??? */
1111 dev_warn(&h
->pdev
->dev
, "cp %p SCSI status was 0. "
1112 "Returning no connection.\n", cp
),
1114 /* Ordinarily, this case should never happen,
1115 * but there is a bug in some released firmware
1116 * revisions that allows it to happen if, for
1117 * example, a 4100 backplane loses power and
1118 * the tape drive is in it. We assume that
1119 * it's a fatal error of some kind because we
1120 * can't show that it wasn't. We will make it
1121 * look like selection timeout since that is
1122 * the most common reason for this to occur,
1123 * and it's severe enough.
1126 cmd
->result
= DID_NO_CONNECT
<< 16;
1130 case CMD_DATA_UNDERRUN
: /* let mid layer handle it. */
1132 case CMD_DATA_OVERRUN
:
1133 dev_warn(&h
->pdev
->dev
, "cp %p has"
1134 " completed with data overrun "
1138 /* print_bytes(cp, sizeof(*cp), 1, 0);
1140 /* We get CMD_INVALID if you address a non-existent device
1141 * instead of a selection timeout (no response). You will
1142 * see this if you yank out a drive, then try to access it.
1143 * This is kind of a shame because it means that any other
1144 * CMD_INVALID (e.g. driver bug) will get interpreted as a
1145 * missing target. */
1146 cmd
->result
= DID_NO_CONNECT
<< 16;
1149 case CMD_PROTOCOL_ERR
:
1150 dev_warn(&h
->pdev
->dev
, "cp %p has "
1151 "protocol error \n", cp
);
1153 case CMD_HARDWARE_ERR
:
1154 cmd
->result
= DID_ERROR
<< 16;
1155 dev_warn(&h
->pdev
->dev
, "cp %p had hardware error\n", cp
);
1157 case CMD_CONNECTION_LOST
:
1158 cmd
->result
= DID_ERROR
<< 16;
1159 dev_warn(&h
->pdev
->dev
, "cp %p had connection lost\n", cp
);
1162 cmd
->result
= DID_ABORT
<< 16;
1163 dev_warn(&h
->pdev
->dev
, "cp %p was aborted with status 0x%x\n",
1164 cp
, ei
->ScsiStatus
);
1166 case CMD_ABORT_FAILED
:
1167 cmd
->result
= DID_ERROR
<< 16;
1168 dev_warn(&h
->pdev
->dev
, "cp %p reports abort failed\n", cp
);
1170 case CMD_UNSOLICITED_ABORT
:
1171 cmd
->result
= DID_RESET
<< 16;
1172 dev_warn(&h
->pdev
->dev
, "cp %p aborted do to an unsolicited "
1176 cmd
->result
= DID_TIME_OUT
<< 16;
1177 dev_warn(&h
->pdev
->dev
, "cp %p timedout\n", cp
);
1180 cmd
->result
= DID_ERROR
<< 16;
1181 dev_warn(&h
->pdev
->dev
, "cp %p returned unknown status %x\n",
1182 cp
, ei
->CommandStatus
);
1184 cmd
->scsi_done(cmd
);
1188 static int hpsa_scsi_detect(struct ctlr_info
*h
)
1190 struct Scsi_Host
*sh
;
1193 sh
= scsi_host_alloc(&hpsa_driver_template
, sizeof(h
));
1200 sh
->max_channel
= 3;
1201 sh
->max_cmd_len
= MAX_COMMAND_SIZE
;
1202 sh
->max_lun
= HPSA_MAX_LUN
;
1203 sh
->max_id
= HPSA_MAX_LUN
;
1204 sh
->can_queue
= h
->nr_cmds
;
1205 sh
->cmd_per_lun
= h
->nr_cmds
;
1207 sh
->hostdata
[0] = (unsigned long) h
;
1208 sh
->irq
= h
->intr
[PERF_MODE_INT
];
1209 sh
->unique_id
= sh
->irq
;
1210 error
= scsi_add_host(sh
, &h
->pdev
->dev
);
1217 dev_err(&h
->pdev
->dev
, "hpsa_scsi_detect: scsi_add_host"
1218 " failed for controller %d\n", h
->ctlr
);
1222 dev_err(&h
->pdev
->dev
, "hpsa_scsi_detect: scsi_host_alloc"
1223 " failed for controller %d\n", h
->ctlr
);
1227 static void hpsa_pci_unmap(struct pci_dev
*pdev
,
1228 struct CommandList
*c
, int sg_used
, int data_direction
)
1231 union u64bit addr64
;
1233 for (i
= 0; i
< sg_used
; i
++) {
1234 addr64
.val32
.lower
= c
->SG
[i
].Addr
.lower
;
1235 addr64
.val32
.upper
= c
->SG
[i
].Addr
.upper
;
1236 pci_unmap_single(pdev
, (dma_addr_t
) addr64
.val
, c
->SG
[i
].Len
,
1241 static void hpsa_map_one(struct pci_dev
*pdev
,
1242 struct CommandList
*cp
,
1249 if (buflen
== 0 || data_direction
== PCI_DMA_NONE
) {
1250 cp
->Header
.SGList
= 0;
1251 cp
->Header
.SGTotal
= 0;
1255 addr64
= (u64
) pci_map_single(pdev
, buf
, buflen
, data_direction
);
1256 cp
->SG
[0].Addr
.lower
=
1257 (u32
) (addr64
& (u64
) 0x00000000FFFFFFFF);
1258 cp
->SG
[0].Addr
.upper
=
1259 (u32
) ((addr64
>> 32) & (u64
) 0x00000000FFFFFFFF);
1260 cp
->SG
[0].Len
= buflen
;
1261 cp
->Header
.SGList
= (u8
) 1; /* no. SGs contig in this cmd */
1262 cp
->Header
.SGTotal
= (u16
) 1; /* total sgs in this cmd list */
1265 static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info
*h
,
1266 struct CommandList
*c
)
1268 DECLARE_COMPLETION_ONSTACK(wait
);
1271 enqueue_cmd_and_start_io(h
, c
);
1272 wait_for_completion(&wait
);
1275 static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info
*h
,
1276 struct CommandList
*c
, int data_direction
)
1278 int retry_count
= 0;
1281 memset(c
->err_info
, 0, sizeof(c
->err_info
));
1282 hpsa_scsi_do_simple_cmd_core(h
, c
);
1284 } while (check_for_unit_attention(h
, c
) && retry_count
<= 3);
1285 hpsa_pci_unmap(h
->pdev
, c
, 1, data_direction
);
1288 static void hpsa_scsi_interpret_error(struct CommandList
*cp
)
1290 struct ErrorInfo
*ei
;
1291 struct device
*d
= &cp
->h
->pdev
->dev
;
1294 switch (ei
->CommandStatus
) {
1295 case CMD_TARGET_STATUS
:
1296 dev_warn(d
, "cmd %p has completed with errors\n", cp
);
1297 dev_warn(d
, "cmd %p has SCSI Status = %x\n", cp
,
1299 if (ei
->ScsiStatus
== 0)
1300 dev_warn(d
, "SCSI status is abnormally zero. "
1301 "(probably indicates selection timeout "
1302 "reported incorrectly due to a known "
1303 "firmware bug, circa July, 2001.)\n");
1305 case CMD_DATA_UNDERRUN
: /* let mid layer handle it. */
1306 dev_info(d
, "UNDERRUN\n");
1308 case CMD_DATA_OVERRUN
:
1309 dev_warn(d
, "cp %p has completed with data overrun\n", cp
);
1312 /* controller unfortunately reports SCSI passthru's
1313 * to non-existent targets as invalid commands.
1315 dev_warn(d
, "cp %p is reported invalid (probably means "
1316 "target device no longer present)\n", cp
);
1317 /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0);
1321 case CMD_PROTOCOL_ERR
:
1322 dev_warn(d
, "cp %p has protocol error \n", cp
);
1324 case CMD_HARDWARE_ERR
:
1325 /* cmd->result = DID_ERROR << 16; */
1326 dev_warn(d
, "cp %p had hardware error\n", cp
);
1328 case CMD_CONNECTION_LOST
:
1329 dev_warn(d
, "cp %p had connection lost\n", cp
);
1332 dev_warn(d
, "cp %p was aborted\n", cp
);
1334 case CMD_ABORT_FAILED
:
1335 dev_warn(d
, "cp %p reports abort failed\n", cp
);
1337 case CMD_UNSOLICITED_ABORT
:
1338 dev_warn(d
, "cp %p aborted due to an unsolicited abort\n", cp
);
1341 dev_warn(d
, "cp %p timed out\n", cp
);
1344 dev_warn(d
, "cp %p returned unknown status %x\n", cp
,
1349 static int hpsa_scsi_do_inquiry(struct ctlr_info
*h
, unsigned char *scsi3addr
,
1350 unsigned char page
, unsigned char *buf
,
1351 unsigned char bufsize
)
1354 struct CommandList
*c
;
1355 struct ErrorInfo
*ei
;
1357 c
= cmd_special_alloc(h
);
1359 if (c
== NULL
) { /* trouble... */
1360 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1364 fill_cmd(c
, HPSA_INQUIRY
, h
, buf
, bufsize
, page
, scsi3addr
, TYPE_CMD
);
1365 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_FROMDEVICE
);
1367 if (ei
->CommandStatus
!= 0 && ei
->CommandStatus
!= CMD_DATA_UNDERRUN
) {
1368 hpsa_scsi_interpret_error(c
);
1371 cmd_special_free(h
, c
);
1375 static int hpsa_send_reset(struct ctlr_info
*h
, unsigned char *scsi3addr
)
1378 struct CommandList
*c
;
1379 struct ErrorInfo
*ei
;
1381 c
= cmd_special_alloc(h
);
1383 if (c
== NULL
) { /* trouble... */
1384 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1388 fill_cmd(c
, HPSA_DEVICE_RESET_MSG
, h
, NULL
, 0, 0, scsi3addr
, TYPE_MSG
);
1389 hpsa_scsi_do_simple_cmd_core(h
, c
);
1390 /* no unmap needed here because no data xfer. */
1393 if (ei
->CommandStatus
!= 0) {
1394 hpsa_scsi_interpret_error(c
);
1397 cmd_special_free(h
, c
);
1401 static void hpsa_get_raid_level(struct ctlr_info
*h
,
1402 unsigned char *scsi3addr
, unsigned char *raid_level
)
1407 *raid_level
= RAID_UNKNOWN
;
1408 buf
= kzalloc(64, GFP_KERNEL
);
1411 rc
= hpsa_scsi_do_inquiry(h
, scsi3addr
, 0xC1, buf
, 64);
1413 *raid_level
= buf
[8];
1414 if (*raid_level
> RAID_UNKNOWN
)
1415 *raid_level
= RAID_UNKNOWN
;
1420 /* Get the device id from inquiry page 0x83 */
1421 static int hpsa_get_device_id(struct ctlr_info
*h
, unsigned char *scsi3addr
,
1422 unsigned char *device_id
, int buflen
)
1429 buf
= kzalloc(64, GFP_KERNEL
);
1432 rc
= hpsa_scsi_do_inquiry(h
, scsi3addr
, 0x83, buf
, 64);
1434 memcpy(device_id
, &buf
[8], buflen
);
1439 static int hpsa_scsi_do_report_luns(struct ctlr_info
*h
, int logical
,
1440 struct ReportLUNdata
*buf
, int bufsize
,
1441 int extended_response
)
1444 struct CommandList
*c
;
1445 unsigned char scsi3addr
[8];
1446 struct ErrorInfo
*ei
;
1448 c
= cmd_special_alloc(h
);
1449 if (c
== NULL
) { /* trouble... */
1450 dev_err(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1453 /* address the controller */
1454 memset(scsi3addr
, 0, sizeof(scsi3addr
));
1455 fill_cmd(c
, logical
? HPSA_REPORT_LOG
: HPSA_REPORT_PHYS
, h
,
1456 buf
, bufsize
, 0, scsi3addr
, TYPE_CMD
);
1457 if (extended_response
)
1458 c
->Request
.CDB
[1] = extended_response
;
1459 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_FROMDEVICE
);
1461 if (ei
->CommandStatus
!= 0 &&
1462 ei
->CommandStatus
!= CMD_DATA_UNDERRUN
) {
1463 hpsa_scsi_interpret_error(c
);
1466 cmd_special_free(h
, c
);
1470 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info
*h
,
1471 struct ReportLUNdata
*buf
,
1472 int bufsize
, int extended_response
)
1474 return hpsa_scsi_do_report_luns(h
, 0, buf
, bufsize
, extended_response
);
1477 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info
*h
,
1478 struct ReportLUNdata
*buf
, int bufsize
)
1480 return hpsa_scsi_do_report_luns(h
, 1, buf
, bufsize
, 0);
1483 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t
*device
,
1484 int bus
, int target
, int lun
)
1487 device
->target
= target
;
1491 static int hpsa_update_device_info(struct ctlr_info
*h
,
1492 unsigned char scsi3addr
[], struct hpsa_scsi_dev_t
*this_device
)
1494 #define OBDR_TAPE_INQ_SIZE 49
1495 unsigned char *inq_buff
;
1497 inq_buff
= kzalloc(OBDR_TAPE_INQ_SIZE
, GFP_KERNEL
);
1501 /* Do an inquiry to the device to see what it is. */
1502 if (hpsa_scsi_do_inquiry(h
, scsi3addr
, 0, inq_buff
,
1503 (unsigned char) OBDR_TAPE_INQ_SIZE
) != 0) {
1504 /* Inquiry failed (msg printed already) */
1505 dev_err(&h
->pdev
->dev
,
1506 "hpsa_update_device_info: inquiry failed\n");
1510 /* As a side effect, record the firmware version number
1511 * if we happen to be talking to the RAID controller.
1513 if (is_hba_lunid(scsi3addr
))
1514 memcpy(h
->firm_ver
, &inq_buff
[32], 4);
1516 this_device
->devtype
= (inq_buff
[0] & 0x1f);
1517 memcpy(this_device
->scsi3addr
, scsi3addr
, 8);
1518 memcpy(this_device
->vendor
, &inq_buff
[8],
1519 sizeof(this_device
->vendor
));
1520 memcpy(this_device
->model
, &inq_buff
[16],
1521 sizeof(this_device
->model
));
1522 memcpy(this_device
->revision
, &inq_buff
[32],
1523 sizeof(this_device
->revision
));
1524 memset(this_device
->device_id
, 0,
1525 sizeof(this_device
->device_id
));
1526 hpsa_get_device_id(h
, scsi3addr
, this_device
->device_id
,
1527 sizeof(this_device
->device_id
));
1529 if (this_device
->devtype
== TYPE_DISK
&&
1530 is_logical_dev_addr_mode(scsi3addr
))
1531 hpsa_get_raid_level(h
, scsi3addr
, &this_device
->raid_level
);
1533 this_device
->raid_level
= RAID_UNKNOWN
;
1543 static unsigned char *msa2xxx_model
[] = {
1551 static int is_msa2xxx(struct ctlr_info
*h
, struct hpsa_scsi_dev_t
*device
)
1555 for (i
= 0; msa2xxx_model
[i
]; i
++)
1556 if (strncmp(device
->model
, msa2xxx_model
[i
],
1557 strlen(msa2xxx_model
[i
])) == 0)
1562 /* Helper function to assign bus, target, lun mapping of devices.
1563 * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical
1564 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
1565 * Logical drive target and lun are assigned at this time, but
1566 * physical device lun and target assignment are deferred (assigned
1567 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
1569 static void figure_bus_target_lun(struct ctlr_info
*h
,
1570 u8
*lunaddrbytes
, int *bus
, int *target
, int *lun
,
1571 struct hpsa_scsi_dev_t
*device
)
1575 if (is_logical_dev_addr_mode(lunaddrbytes
)) {
1576 /* logical device */
1577 if (unlikely(is_scsi_rev_5(h
))) {
1578 /* p1210m, logical drives lun assignments
1579 * match SCSI REPORT LUNS data.
1581 lunid
= le32_to_cpu(*((__le32
*) lunaddrbytes
));
1584 *lun
= (lunid
& 0x3fff) + 1;
1587 lunid
= le32_to_cpu(*((__le32
*) lunaddrbytes
));
1588 if (is_msa2xxx(h
, device
)) {
1589 /* msa2xxx way, put logicals on bus 1
1590 * and match target/lun numbers box
1594 *target
= (lunid
>> 16) & 0x3fff;
1595 *lun
= lunid
& 0x00ff;
1597 /* Traditional smart array way. */
1600 *target
= lunid
& 0x3fff;
1604 /* physical device */
1605 if (is_hba_lunid(lunaddrbytes
))
1606 if (unlikely(is_scsi_rev_5(h
))) {
1607 *bus
= 0; /* put p1210m ctlr at 0,0,0 */
1612 *bus
= 3; /* traditional smartarray */
1614 *bus
= 2; /* physical disk */
1616 *lun
= -1; /* we will fill these in later. */
1621 * If there is no lun 0 on a target, linux won't find any devices.
1622 * For the MSA2xxx boxes, we have to manually detect the enclosure
1623 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
1624 * it for some reason. *tmpdevice is the target we're adding,
1625 * this_device is a pointer into the current element of currentsd[]
1626 * that we're building up in update_scsi_devices(), below.
1627 * lunzerobits is a bitmap that tracks which targets already have a
1629 * Returns 1 if an enclosure was added, 0 if not.
1631 static int add_msa2xxx_enclosure_device(struct ctlr_info
*h
,
1632 struct hpsa_scsi_dev_t
*tmpdevice
,
1633 struct hpsa_scsi_dev_t
*this_device
, u8
*lunaddrbytes
,
1634 int bus
, int target
, int lun
, unsigned long lunzerobits
[],
1635 int *nmsa2xxx_enclosures
)
1637 unsigned char scsi3addr
[8];
1639 if (test_bit(target
, lunzerobits
))
1640 return 0; /* There is already a lun 0 on this target. */
1642 if (!is_logical_dev_addr_mode(lunaddrbytes
))
1643 return 0; /* It's the logical targets that may lack lun 0. */
1645 if (!is_msa2xxx(h
, tmpdevice
))
1646 return 0; /* It's only the MSA2xxx that have this problem. */
1648 if (lun
== 0) /* if lun is 0, then obviously we have a lun 0. */
1651 if (is_hba_lunid(scsi3addr
))
1652 return 0; /* Don't add the RAID controller here. */
1654 if (is_scsi_rev_5(h
))
1655 return 0; /* p1210m doesn't need to do this. */
1657 #define MAX_MSA2XXX_ENCLOSURES 32
1658 if (*nmsa2xxx_enclosures
>= MAX_MSA2XXX_ENCLOSURES
) {
1659 dev_warn(&h
->pdev
->dev
, "Maximum number of MSA2XXX "
1660 "enclosures exceeded. Check your hardware "
1665 memset(scsi3addr
, 0, 8);
1666 scsi3addr
[3] = target
;
1667 if (hpsa_update_device_info(h
, scsi3addr
, this_device
))
1669 (*nmsa2xxx_enclosures
)++;
1670 hpsa_set_bus_target_lun(this_device
, bus
, target
, 0);
1671 set_bit(target
, lunzerobits
);
1676 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
1677 * logdev. The number of luns in physdev and logdev are returned in
1678 * *nphysicals and *nlogicals, respectively.
1679 * Returns 0 on success, -1 otherwise.
1681 static int hpsa_gather_lun_info(struct ctlr_info
*h
,
1683 struct ReportLUNdata
*physdev
, u32
*nphysicals
,
1684 struct ReportLUNdata
*logdev
, u32
*nlogicals
)
1686 if (hpsa_scsi_do_report_phys_luns(h
, physdev
, reportlunsize
, 0)) {
1687 dev_err(&h
->pdev
->dev
, "report physical LUNs failed.\n");
1690 *nphysicals
= be32_to_cpu(*((__be32
*)physdev
->LUNListLength
)) / 8;
1691 if (*nphysicals
> HPSA_MAX_PHYS_LUN
) {
1692 dev_warn(&h
->pdev
->dev
, "maximum physical LUNs (%d) exceeded."
1693 " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN
,
1694 *nphysicals
- HPSA_MAX_PHYS_LUN
);
1695 *nphysicals
= HPSA_MAX_PHYS_LUN
;
1697 if (hpsa_scsi_do_report_log_luns(h
, logdev
, reportlunsize
)) {
1698 dev_err(&h
->pdev
->dev
, "report logical LUNs failed.\n");
1701 *nlogicals
= be32_to_cpu(*((__be32
*) logdev
->LUNListLength
)) / 8;
1702 /* Reject Logicals in excess of our max capability. */
1703 if (*nlogicals
> HPSA_MAX_LUN
) {
1704 dev_warn(&h
->pdev
->dev
,
1705 "maximum logical LUNs (%d) exceeded. "
1706 "%d LUNs ignored.\n", HPSA_MAX_LUN
,
1707 *nlogicals
- HPSA_MAX_LUN
);
1708 *nlogicals
= HPSA_MAX_LUN
;
1710 if (*nlogicals
+ *nphysicals
> HPSA_MAX_PHYS_LUN
) {
1711 dev_warn(&h
->pdev
->dev
,
1712 "maximum logical + physical LUNs (%d) exceeded. "
1713 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN
,
1714 *nphysicals
+ *nlogicals
- HPSA_MAX_PHYS_LUN
);
1715 *nlogicals
= HPSA_MAX_PHYS_LUN
- *nphysicals
;
1720 u8
*figure_lunaddrbytes(struct ctlr_info
*h
, int raid_ctlr_position
, int i
,
1721 int nphysicals
, int nlogicals
, struct ReportLUNdata
*physdev_list
,
1722 struct ReportLUNdata
*logdev_list
)
1724 /* Helper function, figure out where the LUN ID info is coming from
1725 * given index i, lists of physical and logical devices, where in
1726 * the list the raid controller is supposed to appear (first or last)
1729 int logicals_start
= nphysicals
+ (raid_ctlr_position
== 0);
1730 int last_device
= nphysicals
+ nlogicals
+ (raid_ctlr_position
== 0);
1732 if (i
== raid_ctlr_position
)
1733 return RAID_CTLR_LUNID
;
1735 if (i
< logicals_start
)
1736 return &physdev_list
->LUN
[i
- (raid_ctlr_position
== 0)][0];
1738 if (i
< last_device
)
1739 return &logdev_list
->LUN
[i
- nphysicals
-
1740 (raid_ctlr_position
== 0)][0];
1745 static void hpsa_update_scsi_devices(struct ctlr_info
*h
, int hostno
)
1747 /* the idea here is we could get notified
1748 * that some devices have changed, so we do a report
1749 * physical luns and report logical luns cmd, and adjust
1750 * our list of devices accordingly.
1752 * The scsi3addr's of devices won't change so long as the
1753 * adapter is not reset. That means we can rescan and
1754 * tell which devices we already know about, vs. new
1755 * devices, vs. disappearing devices.
1757 struct ReportLUNdata
*physdev_list
= NULL
;
1758 struct ReportLUNdata
*logdev_list
= NULL
;
1759 unsigned char *inq_buff
= NULL
;
1762 u32 ndev_allocated
= 0;
1763 struct hpsa_scsi_dev_t
**currentsd
, *this_device
, *tmpdevice
;
1765 int reportlunsize
= sizeof(*physdev_list
) + HPSA_MAX_PHYS_LUN
* 8;
1766 int i
, nmsa2xxx_enclosures
, ndevs_to_allocate
;
1767 int bus
, target
, lun
;
1768 int raid_ctlr_position
;
1769 DECLARE_BITMAP(lunzerobits
, HPSA_MAX_TARGETS_PER_CTLR
);
1771 currentsd
= kzalloc(sizeof(*currentsd
) * HPSA_MAX_SCSI_DEVS_PER_HBA
,
1773 physdev_list
= kzalloc(reportlunsize
, GFP_KERNEL
);
1774 logdev_list
= kzalloc(reportlunsize
, GFP_KERNEL
);
1775 inq_buff
= kmalloc(OBDR_TAPE_INQ_SIZE
, GFP_KERNEL
);
1776 tmpdevice
= kzalloc(sizeof(*tmpdevice
), GFP_KERNEL
);
1778 if (!currentsd
|| !physdev_list
|| !logdev_list
||
1779 !inq_buff
|| !tmpdevice
) {
1780 dev_err(&h
->pdev
->dev
, "out of memory\n");
1783 memset(lunzerobits
, 0, sizeof(lunzerobits
));
1785 if (hpsa_gather_lun_info(h
, reportlunsize
, physdev_list
, &nphysicals
,
1786 logdev_list
, &nlogicals
))
1789 /* We might see up to 32 MSA2xxx enclosures, actually 8 of them
1790 * but each of them 4 times through different paths. The plus 1
1791 * is for the RAID controller.
1793 ndevs_to_allocate
= nphysicals
+ nlogicals
+ MAX_MSA2XXX_ENCLOSURES
+ 1;
1795 /* Allocate the per device structures */
1796 for (i
= 0; i
< ndevs_to_allocate
; i
++) {
1797 currentsd
[i
] = kzalloc(sizeof(*currentsd
[i
]), GFP_KERNEL
);
1798 if (!currentsd
[i
]) {
1799 dev_warn(&h
->pdev
->dev
, "out of memory at %s:%d\n",
1800 __FILE__
, __LINE__
);
1806 if (unlikely(is_scsi_rev_5(h
)))
1807 raid_ctlr_position
= 0;
1809 raid_ctlr_position
= nphysicals
+ nlogicals
;
1811 /* adjust our table of devices */
1812 nmsa2xxx_enclosures
= 0;
1813 for (i
= 0; i
< nphysicals
+ nlogicals
+ 1; i
++) {
1816 /* Figure out where the LUN ID info is coming from */
1817 lunaddrbytes
= figure_lunaddrbytes(h
, raid_ctlr_position
,
1818 i
, nphysicals
, nlogicals
, physdev_list
, logdev_list
);
1819 /* skip masked physical devices. */
1820 if (lunaddrbytes
[3] & 0xC0 &&
1821 i
< nphysicals
+ (raid_ctlr_position
== 0))
1824 /* Get device type, vendor, model, device id */
1825 if (hpsa_update_device_info(h
, lunaddrbytes
, tmpdevice
))
1826 continue; /* skip it if we can't talk to it. */
1827 figure_bus_target_lun(h
, lunaddrbytes
, &bus
, &target
, &lun
,
1829 this_device
= currentsd
[ncurrent
];
1832 * For the msa2xxx boxes, we have to insert a LUN 0 which
1833 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
1834 * is nonetheless an enclosure device there. We have to
1835 * present that otherwise linux won't find anything if
1836 * there is no lun 0.
1838 if (add_msa2xxx_enclosure_device(h
, tmpdevice
, this_device
,
1839 lunaddrbytes
, bus
, target
, lun
, lunzerobits
,
1840 &nmsa2xxx_enclosures
)) {
1842 this_device
= currentsd
[ncurrent
];
1845 *this_device
= *tmpdevice
;
1846 hpsa_set_bus_target_lun(this_device
, bus
, target
, lun
);
1848 switch (this_device
->devtype
) {
1850 /* We don't *really* support actual CD-ROM devices,
1851 * just "One Button Disaster Recovery" tape drive
1852 * which temporarily pretends to be a CD-ROM drive.
1853 * So we check that the device is really an OBDR tape
1854 * device by checking for "$DR-10" in bytes 43-48 of
1858 #define OBDR_TAPE_SIG "$DR-10"
1859 strncpy(obdr_sig
, &inq_buff
[43], 6);
1861 if (strncmp(obdr_sig
, OBDR_TAPE_SIG
, 6) != 0)
1862 /* Not OBDR device, ignore it. */
1873 case TYPE_MEDIUM_CHANGER
:
1877 /* Only present the Smartarray HBA as a RAID controller.
1878 * If it's a RAID controller other than the HBA itself
1879 * (an external RAID controller, MSA500 or similar)
1882 if (!is_hba_lunid(lunaddrbytes
))
1889 if (ncurrent
>= HPSA_MAX_SCSI_DEVS_PER_HBA
)
1892 adjust_hpsa_scsi_table(h
, hostno
, currentsd
, ncurrent
);
1895 for (i
= 0; i
< ndev_allocated
; i
++)
1896 kfree(currentsd
[i
]);
1899 kfree(physdev_list
);
1903 /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
1904 * dma mapping and fills in the scatter gather entries of the
1907 static int hpsa_scatter_gather(struct pci_dev
*pdev
,
1908 struct CommandList
*cp
,
1909 struct scsi_cmnd
*cmd
)
1912 struct scatterlist
*sg
;
1916 BUG_ON(scsi_sg_count(cmd
) > MAXSGENTRIES
);
1918 use_sg
= scsi_dma_map(cmd
);
1923 goto sglist_finished
;
1925 scsi_for_each_sg(cmd
, sg
, use_sg
, i
) {
1926 addr64
= (u64
) sg_dma_address(sg
);
1927 len
= sg_dma_len(sg
);
1928 cp
->SG
[i
].Addr
.lower
=
1929 (u32
) (addr64
& (u64
) 0x00000000FFFFFFFF);
1930 cp
->SG
[i
].Addr
.upper
=
1931 (u32
) ((addr64
>> 32) & (u64
) 0x00000000FFFFFFFF);
1932 cp
->SG
[i
].Len
= len
;
1933 cp
->SG
[i
].Ext
= 0; /* we are not chaining */
1938 cp
->Header
.SGList
= (u8
) use_sg
; /* no. SGs contig in this cmd */
1939 cp
->Header
.SGTotal
= (u16
) use_sg
; /* total sgs in this cmd list */
1944 static int hpsa_scsi_queue_command(struct scsi_cmnd
*cmd
,
1945 void (*done
)(struct scsi_cmnd
*))
1947 struct ctlr_info
*h
;
1948 struct hpsa_scsi_dev_t
*dev
;
1949 unsigned char scsi3addr
[8];
1950 struct CommandList
*c
;
1951 unsigned long flags
;
1953 /* Get the ptr to our adapter structure out of cmd->host. */
1954 h
= sdev_to_hba(cmd
->device
);
1955 dev
= cmd
->device
->hostdata
;
1957 cmd
->result
= DID_NO_CONNECT
<< 16;
1961 memcpy(scsi3addr
, dev
->scsi3addr
, sizeof(scsi3addr
));
1963 /* Need a lock as this is being allocated from the pool */
1964 spin_lock_irqsave(&h
->lock
, flags
);
1966 spin_unlock_irqrestore(&h
->lock
, flags
);
1967 if (c
== NULL
) { /* trouble... */
1968 dev_err(&h
->pdev
->dev
, "cmd_alloc returned NULL!\n");
1969 return SCSI_MLQUEUE_HOST_BUSY
;
1972 /* Fill in the command list header */
1974 cmd
->scsi_done
= done
; /* save this for use by completion code */
1976 /* save c in case we have to abort it */
1977 cmd
->host_scribble
= (unsigned char *) c
;
1979 c
->cmd_type
= CMD_SCSI
;
1981 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
1982 memcpy(&c
->Header
.LUN
.LunAddrBytes
[0], &scsi3addr
[0], 8);
1983 c
->Header
.Tag
.lower
= (c
->cmdindex
<< DIRECT_LOOKUP_SHIFT
);
1984 c
->Header
.Tag
.lower
|= DIRECT_LOOKUP_BIT
;
1986 /* Fill in the request block... */
1988 c
->Request
.Timeout
= 0;
1989 memset(c
->Request
.CDB
, 0, sizeof(c
->Request
.CDB
));
1990 BUG_ON(cmd
->cmd_len
> sizeof(c
->Request
.CDB
));
1991 c
->Request
.CDBLen
= cmd
->cmd_len
;
1992 memcpy(c
->Request
.CDB
, cmd
->cmnd
, cmd
->cmd_len
);
1993 c
->Request
.Type
.Type
= TYPE_CMD
;
1994 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
1995 switch (cmd
->sc_data_direction
) {
1997 c
->Request
.Type
.Direction
= XFER_WRITE
;
1999 case DMA_FROM_DEVICE
:
2000 c
->Request
.Type
.Direction
= XFER_READ
;
2003 c
->Request
.Type
.Direction
= XFER_NONE
;
2005 case DMA_BIDIRECTIONAL
:
2006 /* This can happen if a buggy application does a scsi passthru
2007 * and sets both inlen and outlen to non-zero. ( see
2008 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
2011 c
->Request
.Type
.Direction
= XFER_RSVD
;
2012 /* This is technically wrong, and hpsa controllers should
2013 * reject it with CMD_INVALID, which is the most correct
2014 * response, but non-fibre backends appear to let it
2015 * slide by, and give the same results as if this field
2016 * were set correctly. Either way is acceptable for
2017 * our purposes here.
2023 dev_err(&h
->pdev
->dev
, "unknown data direction: %d\n",
2024 cmd
->sc_data_direction
);
2029 if (hpsa_scatter_gather(h
->pdev
, c
, cmd
) < 0) { /* Fill SG list */
2031 return SCSI_MLQUEUE_HOST_BUSY
;
2033 enqueue_cmd_and_start_io(h
, c
);
2034 /* the cmd'll come back via intr handler in complete_scsi_command() */
2038 static void hpsa_scan_start(struct Scsi_Host
*sh
)
2040 struct ctlr_info
*h
= shost_to_hba(sh
);
2041 unsigned long flags
;
2043 /* wait until any scan already in progress is finished. */
2045 spin_lock_irqsave(&h
->scan_lock
, flags
);
2046 if (h
->scan_finished
)
2048 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2049 wait_event(h
->scan_wait_queue
, h
->scan_finished
);
2050 /* Note: We don't need to worry about a race between this
2051 * thread and driver unload because the midlayer will
2052 * have incremented the reference count, so unload won't
2053 * happen if we're in here.
2056 h
->scan_finished
= 0; /* mark scan as in progress */
2057 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2059 hpsa_update_scsi_devices(h
, h
->scsi_host
->host_no
);
2061 spin_lock_irqsave(&h
->scan_lock
, flags
);
2062 h
->scan_finished
= 1; /* mark scan as finished. */
2063 wake_up_all(&h
->scan_wait_queue
);
2064 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2067 static int hpsa_scan_finished(struct Scsi_Host
*sh
,
2068 unsigned long elapsed_time
)
2070 struct ctlr_info
*h
= shost_to_hba(sh
);
2071 unsigned long flags
;
2074 spin_lock_irqsave(&h
->scan_lock
, flags
);
2075 finished
= h
->scan_finished
;
2076 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2080 static void hpsa_unregister_scsi(struct ctlr_info
*h
)
2082 /* we are being forcibly unloaded, and may not refuse. */
2083 scsi_remove_host(h
->scsi_host
);
2084 scsi_host_put(h
->scsi_host
);
2085 h
->scsi_host
= NULL
;
2088 static int hpsa_register_scsi(struct ctlr_info
*h
)
2092 rc
= hpsa_scsi_detect(h
);
2094 dev_err(&h
->pdev
->dev
, "hpsa_register_scsi: failed"
2095 " hpsa_scsi_detect(), rc is %d\n", rc
);
2099 static int wait_for_device_to_become_ready(struct ctlr_info
*h
,
2100 unsigned char lunaddr
[])
2104 int waittime
= 1; /* seconds */
2105 struct CommandList
*c
;
2107 c
= cmd_special_alloc(h
);
2109 dev_warn(&h
->pdev
->dev
, "out of memory in "
2110 "wait_for_device_to_become_ready.\n");
2114 /* Send test unit ready until device ready, or give up. */
2115 while (count
< HPSA_TUR_RETRY_LIMIT
) {
2117 /* Wait for a bit. do this first, because if we send
2118 * the TUR right away, the reset will just abort it.
2120 msleep(1000 * waittime
);
2123 /* Increase wait time with each try, up to a point. */
2124 if (waittime
< HPSA_MAX_WAIT_INTERVAL_SECS
)
2125 waittime
= waittime
* 2;
2127 /* Send the Test Unit Ready */
2128 fill_cmd(c
, TEST_UNIT_READY
, h
, NULL
, 0, 0, lunaddr
, TYPE_CMD
);
2129 hpsa_scsi_do_simple_cmd_core(h
, c
);
2130 /* no unmap needed here because no data xfer. */
2132 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2135 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
2136 c
->err_info
->ScsiStatus
== SAM_STAT_CHECK_CONDITION
&&
2137 (c
->err_info
->SenseInfo
[2] == NO_SENSE
||
2138 c
->err_info
->SenseInfo
[2] == UNIT_ATTENTION
))
2141 dev_warn(&h
->pdev
->dev
, "waiting %d secs "
2142 "for device to become ready.\n", waittime
);
2143 rc
= 1; /* device not ready. */
2147 dev_warn(&h
->pdev
->dev
, "giving up on device.\n");
2149 dev_warn(&h
->pdev
->dev
, "device is ready.\n");
2151 cmd_special_free(h
, c
);
2155 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
2156 * complaining. Doing a host- or bus-reset can't do anything good here.
2158 static int hpsa_eh_device_reset_handler(struct scsi_cmnd
*scsicmd
)
2161 struct ctlr_info
*h
;
2162 struct hpsa_scsi_dev_t
*dev
;
2164 /* find the controller to which the command to be aborted was sent */
2165 h
= sdev_to_hba(scsicmd
->device
);
2166 if (h
== NULL
) /* paranoia */
2168 dev
= scsicmd
->device
->hostdata
;
2170 dev_err(&h
->pdev
->dev
, "hpsa_eh_device_reset_handler: "
2171 "device lookup failed.\n");
2174 dev_warn(&h
->pdev
->dev
, "resetting device %d:%d:%d:%d\n",
2175 h
->scsi_host
->host_no
, dev
->bus
, dev
->target
, dev
->lun
);
2176 /* send a reset to the SCSI LUN which the command was sent to */
2177 rc
= hpsa_send_reset(h
, dev
->scsi3addr
);
2178 if (rc
== 0 && wait_for_device_to_become_ready(h
, dev
->scsi3addr
) == 0)
2181 dev_warn(&h
->pdev
->dev
, "resetting device failed.\n");
2186 * For operations that cannot sleep, a command block is allocated at init,
2187 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
2188 * which ones are free or in use. Lock must be held when calling this.
2189 * cmd_free() is the complement.
2191 static struct CommandList
*cmd_alloc(struct ctlr_info
*h
)
2193 struct CommandList
*c
;
2195 union u64bit temp64
;
2196 dma_addr_t cmd_dma_handle
, err_dma_handle
;
2199 i
= find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
);
2200 if (i
== h
->nr_cmds
)
2202 } while (test_and_set_bit
2203 (i
& (BITS_PER_LONG
- 1),
2204 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
)) != 0);
2205 c
= h
->cmd_pool
+ i
;
2206 memset(c
, 0, sizeof(*c
));
2207 cmd_dma_handle
= h
->cmd_pool_dhandle
2209 c
->err_info
= h
->errinfo_pool
+ i
;
2210 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
2211 err_dma_handle
= h
->errinfo_pool_dhandle
2212 + i
* sizeof(*c
->err_info
);
2217 INIT_HLIST_NODE(&c
->list
);
2218 c
->busaddr
= (u32
) cmd_dma_handle
;
2219 temp64
.val
= (u64
) err_dma_handle
;
2220 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
2221 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
2222 c
->ErrDesc
.Len
= sizeof(*c
->err_info
);
2228 /* For operations that can wait for kmalloc to possibly sleep,
2229 * this routine can be called. Lock need not be held to call
2230 * cmd_special_alloc. cmd_special_free() is the complement.
2232 static struct CommandList
*cmd_special_alloc(struct ctlr_info
*h
)
2234 struct CommandList
*c
;
2235 union u64bit temp64
;
2236 dma_addr_t cmd_dma_handle
, err_dma_handle
;
2238 c
= pci_alloc_consistent(h
->pdev
, sizeof(*c
), &cmd_dma_handle
);
2241 memset(c
, 0, sizeof(*c
));
2245 c
->err_info
= pci_alloc_consistent(h
->pdev
, sizeof(*c
->err_info
),
2248 if (c
->err_info
== NULL
) {
2249 pci_free_consistent(h
->pdev
,
2250 sizeof(*c
), c
, cmd_dma_handle
);
2253 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
2255 INIT_HLIST_NODE(&c
->list
);
2256 c
->busaddr
= (u32
) cmd_dma_handle
;
2257 temp64
.val
= (u64
) err_dma_handle
;
2258 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
2259 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
2260 c
->ErrDesc
.Len
= sizeof(*c
->err_info
);
2266 static void cmd_free(struct ctlr_info
*h
, struct CommandList
*c
)
2270 i
= c
- h
->cmd_pool
;
2271 clear_bit(i
& (BITS_PER_LONG
- 1),
2272 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
));
2276 static void cmd_special_free(struct ctlr_info
*h
, struct CommandList
*c
)
2278 union u64bit temp64
;
2280 temp64
.val32
.lower
= c
->ErrDesc
.Addr
.lower
;
2281 temp64
.val32
.upper
= c
->ErrDesc
.Addr
.upper
;
2282 pci_free_consistent(h
->pdev
, sizeof(*c
->err_info
),
2283 c
->err_info
, (dma_addr_t
) temp64
.val
);
2284 pci_free_consistent(h
->pdev
, sizeof(*c
),
2285 c
, (dma_addr_t
) c
->busaddr
);
2288 #ifdef CONFIG_COMPAT
2290 static int hpsa_ioctl32_passthru(struct scsi_device
*dev
, int cmd
, void *arg
)
2292 IOCTL32_Command_struct __user
*arg32
=
2293 (IOCTL32_Command_struct __user
*) arg
;
2294 IOCTL_Command_struct arg64
;
2295 IOCTL_Command_struct __user
*p
= compat_alloc_user_space(sizeof(arg64
));
2300 err
|= copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
2301 sizeof(arg64
.LUN_info
));
2302 err
|= copy_from_user(&arg64
.Request
, &arg32
->Request
,
2303 sizeof(arg64
.Request
));
2304 err
|= copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
2305 sizeof(arg64
.error_info
));
2306 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
2307 err
|= get_user(cp
, &arg32
->buf
);
2308 arg64
.buf
= compat_ptr(cp
);
2309 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
2314 err
= hpsa_ioctl(dev
, CCISS_PASSTHRU
, (void *)p
);
2317 err
|= copy_in_user(&arg32
->error_info
, &p
->error_info
,
2318 sizeof(arg32
->error_info
));
2324 static int hpsa_ioctl32_big_passthru(struct scsi_device
*dev
,
2327 BIG_IOCTL32_Command_struct __user
*arg32
=
2328 (BIG_IOCTL32_Command_struct __user
*) arg
;
2329 BIG_IOCTL_Command_struct arg64
;
2330 BIG_IOCTL_Command_struct __user
*p
=
2331 compat_alloc_user_space(sizeof(arg64
));
2336 err
|= copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
2337 sizeof(arg64
.LUN_info
));
2338 err
|= copy_from_user(&arg64
.Request
, &arg32
->Request
,
2339 sizeof(arg64
.Request
));
2340 err
|= copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
2341 sizeof(arg64
.error_info
));
2342 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
2343 err
|= get_user(arg64
.malloc_size
, &arg32
->malloc_size
);
2344 err
|= get_user(cp
, &arg32
->buf
);
2345 arg64
.buf
= compat_ptr(cp
);
2346 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
2351 err
= hpsa_ioctl(dev
, CCISS_BIG_PASSTHRU
, (void *)p
);
2354 err
|= copy_in_user(&arg32
->error_info
, &p
->error_info
,
2355 sizeof(arg32
->error_info
));
2361 static int hpsa_compat_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
)
2364 case CCISS_GETPCIINFO
:
2365 case CCISS_GETINTINFO
:
2366 case CCISS_SETINTINFO
:
2367 case CCISS_GETNODENAME
:
2368 case CCISS_SETNODENAME
:
2369 case CCISS_GETHEARTBEAT
:
2370 case CCISS_GETBUSTYPES
:
2371 case CCISS_GETFIRMVER
:
2372 case CCISS_GETDRIVVER
:
2373 case CCISS_REVALIDVOLS
:
2374 case CCISS_DEREGDISK
:
2375 case CCISS_REGNEWDISK
:
2377 case CCISS_RESCANDISK
:
2378 case CCISS_GETLUNINFO
:
2379 return hpsa_ioctl(dev
, cmd
, arg
);
2381 case CCISS_PASSTHRU32
:
2382 return hpsa_ioctl32_passthru(dev
, cmd
, arg
);
2383 case CCISS_BIG_PASSTHRU32
:
2384 return hpsa_ioctl32_big_passthru(dev
, cmd
, arg
);
2387 return -ENOIOCTLCMD
;
2392 static int hpsa_getpciinfo_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2394 struct hpsa_pci_info pciinfo
;
2398 pciinfo
.domain
= pci_domain_nr(h
->pdev
->bus
);
2399 pciinfo
.bus
= h
->pdev
->bus
->number
;
2400 pciinfo
.dev_fn
= h
->pdev
->devfn
;
2401 pciinfo
.board_id
= h
->board_id
;
2402 if (copy_to_user(argp
, &pciinfo
, sizeof(pciinfo
)))
2407 static int hpsa_getdrivver_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2409 DriverVer_type DriverVer
;
2410 unsigned char vmaj
, vmin
, vsubmin
;
2413 rc
= sscanf(HPSA_DRIVER_VERSION
, "%hhu.%hhu.%hhu",
2414 &vmaj
, &vmin
, &vsubmin
);
2416 dev_info(&h
->pdev
->dev
, "driver version string '%s' "
2417 "unrecognized.", HPSA_DRIVER_VERSION
);
2422 DriverVer
= (vmaj
<< 16) | (vmin
<< 8) | vsubmin
;
2425 if (copy_to_user(argp
, &DriverVer
, sizeof(DriverVer_type
)))
2430 static int hpsa_passthru_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2432 IOCTL_Command_struct iocommand
;
2433 struct CommandList
*c
;
2435 union u64bit temp64
;
2439 if (!capable(CAP_SYS_RAWIO
))
2441 if (copy_from_user(&iocommand
, argp
, sizeof(iocommand
)))
2443 if ((iocommand
.buf_size
< 1) &&
2444 (iocommand
.Request
.Type
.Direction
!= XFER_NONE
)) {
2447 if (iocommand
.buf_size
> 0) {
2448 buff
= kmalloc(iocommand
.buf_size
, GFP_KERNEL
);
2452 if (iocommand
.Request
.Type
.Direction
== XFER_WRITE
) {
2453 /* Copy the data into the buffer we created */
2454 if (copy_from_user(buff
, iocommand
.buf
, iocommand
.buf_size
)) {
2459 memset(buff
, 0, iocommand
.buf_size
);
2460 c
= cmd_special_alloc(h
);
2465 /* Fill in the command type */
2466 c
->cmd_type
= CMD_IOCTL_PEND
;
2467 /* Fill in Command Header */
2468 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
2469 if (iocommand
.buf_size
> 0) { /* buffer to fill */
2470 c
->Header
.SGList
= 1;
2471 c
->Header
.SGTotal
= 1;
2472 } else { /* no buffers to fill */
2473 c
->Header
.SGList
= 0;
2474 c
->Header
.SGTotal
= 0;
2476 memcpy(&c
->Header
.LUN
, &iocommand
.LUN_info
, sizeof(c
->Header
.LUN
));
2477 /* use the kernel address the cmd block for tag */
2478 c
->Header
.Tag
.lower
= c
->busaddr
;
2480 /* Fill in Request block */
2481 memcpy(&c
->Request
, &iocommand
.Request
,
2482 sizeof(c
->Request
));
2484 /* Fill in the scatter gather information */
2485 if (iocommand
.buf_size
> 0) {
2486 temp64
.val
= pci_map_single(h
->pdev
, buff
,
2487 iocommand
.buf_size
, PCI_DMA_BIDIRECTIONAL
);
2488 c
->SG
[0].Addr
.lower
= temp64
.val32
.lower
;
2489 c
->SG
[0].Addr
.upper
= temp64
.val32
.upper
;
2490 c
->SG
[0].Len
= iocommand
.buf_size
;
2491 c
->SG
[0].Ext
= 0; /* we are not chaining*/
2493 hpsa_scsi_do_simple_cmd_core(h
, c
);
2494 hpsa_pci_unmap(h
->pdev
, c
, 1, PCI_DMA_BIDIRECTIONAL
);
2495 check_ioctl_unit_attention(h
, c
);
2497 /* Copy the error information out */
2498 memcpy(&iocommand
.error_info
, c
->err_info
,
2499 sizeof(iocommand
.error_info
));
2500 if (copy_to_user(argp
, &iocommand
, sizeof(iocommand
))) {
2502 cmd_special_free(h
, c
);
2506 if (iocommand
.Request
.Type
.Direction
== XFER_READ
) {
2507 /* Copy the data out of the buffer we created */
2508 if (copy_to_user(iocommand
.buf
, buff
, iocommand
.buf_size
)) {
2510 cmd_special_free(h
, c
);
2515 cmd_special_free(h
, c
);
2519 static int hpsa_big_passthru_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2521 BIG_IOCTL_Command_struct
*ioc
;
2522 struct CommandList
*c
;
2523 unsigned char **buff
= NULL
;
2524 int *buff_size
= NULL
;
2525 union u64bit temp64
;
2531 BYTE __user
*data_ptr
;
2535 if (!capable(CAP_SYS_RAWIO
))
2537 ioc
= (BIG_IOCTL_Command_struct
*)
2538 kmalloc(sizeof(*ioc
), GFP_KERNEL
);
2543 if (copy_from_user(ioc
, argp
, sizeof(*ioc
))) {
2547 if ((ioc
->buf_size
< 1) &&
2548 (ioc
->Request
.Type
.Direction
!= XFER_NONE
)) {
2552 /* Check kmalloc limits using all SGs */
2553 if (ioc
->malloc_size
> MAX_KMALLOC_SIZE
) {
2557 if (ioc
->buf_size
> ioc
->malloc_size
* MAXSGENTRIES
) {
2561 buff
= kzalloc(MAXSGENTRIES
* sizeof(char *), GFP_KERNEL
);
2566 buff_size
= kmalloc(MAXSGENTRIES
* sizeof(int), GFP_KERNEL
);
2571 left
= ioc
->buf_size
;
2572 data_ptr
= ioc
->buf
;
2574 sz
= (left
> ioc
->malloc_size
) ? ioc
->malloc_size
: left
;
2575 buff_size
[sg_used
] = sz
;
2576 buff
[sg_used
] = kmalloc(sz
, GFP_KERNEL
);
2577 if (buff
[sg_used
] == NULL
) {
2581 if (ioc
->Request
.Type
.Direction
== XFER_WRITE
) {
2582 if (copy_from_user(buff
[sg_used
], data_ptr
, sz
)) {
2587 memset(buff
[sg_used
], 0, sz
);
2592 c
= cmd_special_alloc(h
);
2597 c
->cmd_type
= CMD_IOCTL_PEND
;
2598 c
->Header
.ReplyQueue
= 0;
2600 if (ioc
->buf_size
> 0) {
2601 c
->Header
.SGList
= sg_used
;
2602 c
->Header
.SGTotal
= sg_used
;
2604 c
->Header
.SGList
= 0;
2605 c
->Header
.SGTotal
= 0;
2607 memcpy(&c
->Header
.LUN
, &ioc
->LUN_info
, sizeof(c
->Header
.LUN
));
2608 c
->Header
.Tag
.lower
= c
->busaddr
;
2609 memcpy(&c
->Request
, &ioc
->Request
, sizeof(c
->Request
));
2610 if (ioc
->buf_size
> 0) {
2612 for (i
= 0; i
< sg_used
; i
++) {
2613 temp64
.val
= pci_map_single(h
->pdev
, buff
[i
],
2614 buff_size
[i
], PCI_DMA_BIDIRECTIONAL
);
2615 c
->SG
[i
].Addr
.lower
= temp64
.val32
.lower
;
2616 c
->SG
[i
].Addr
.upper
= temp64
.val32
.upper
;
2617 c
->SG
[i
].Len
= buff_size
[i
];
2618 /* we are not chaining */
2622 hpsa_scsi_do_simple_cmd_core(h
, c
);
2623 hpsa_pci_unmap(h
->pdev
, c
, sg_used
, PCI_DMA_BIDIRECTIONAL
);
2624 check_ioctl_unit_attention(h
, c
);
2625 /* Copy the error information out */
2626 memcpy(&ioc
->error_info
, c
->err_info
, sizeof(ioc
->error_info
));
2627 if (copy_to_user(argp
, ioc
, sizeof(*ioc
))) {
2628 cmd_special_free(h
, c
);
2632 if (ioc
->Request
.Type
.Direction
== XFER_READ
) {
2633 /* Copy the data out of the buffer we created */
2634 BYTE __user
*ptr
= ioc
->buf
;
2635 for (i
= 0; i
< sg_used
; i
++) {
2636 if (copy_to_user(ptr
, buff
[i
], buff_size
[i
])) {
2637 cmd_special_free(h
, c
);
2641 ptr
+= buff_size
[i
];
2644 cmd_special_free(h
, c
);
2648 for (i
= 0; i
< sg_used
; i
++)
2657 static void check_ioctl_unit_attention(struct ctlr_info
*h
,
2658 struct CommandList
*c
)
2660 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
2661 c
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
)
2662 (void) check_for_unit_attention(h
, c
);
2667 static int hpsa_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
)
2669 struct ctlr_info
*h
;
2670 void __user
*argp
= (void __user
*)arg
;
2672 h
= sdev_to_hba(dev
);
2675 case CCISS_DEREGDISK
:
2676 case CCISS_REGNEWDISK
:
2678 hpsa_scan_start(h
->scsi_host
);
2680 case CCISS_GETPCIINFO
:
2681 return hpsa_getpciinfo_ioctl(h
, argp
);
2682 case CCISS_GETDRIVVER
:
2683 return hpsa_getdrivver_ioctl(h
, argp
);
2684 case CCISS_PASSTHRU
:
2685 return hpsa_passthru_ioctl(h
, argp
);
2686 case CCISS_BIG_PASSTHRU
:
2687 return hpsa_big_passthru_ioctl(h
, argp
);
2693 static void fill_cmd(struct CommandList
*c
, u8 cmd
, struct ctlr_info
*h
,
2694 void *buff
, size_t size
, u8 page_code
, unsigned char *scsi3addr
,
2697 int pci_dir
= XFER_NONE
;
2699 c
->cmd_type
= CMD_IOCTL_PEND
;
2700 c
->Header
.ReplyQueue
= 0;
2701 if (buff
!= NULL
&& size
> 0) {
2702 c
->Header
.SGList
= 1;
2703 c
->Header
.SGTotal
= 1;
2705 c
->Header
.SGList
= 0;
2706 c
->Header
.SGTotal
= 0;
2708 c
->Header
.Tag
.lower
= c
->busaddr
;
2709 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
2711 c
->Request
.Type
.Type
= cmd_type
;
2712 if (cmd_type
== TYPE_CMD
) {
2715 /* are we trying to read a vital product page */
2716 if (page_code
!= 0) {
2717 c
->Request
.CDB
[1] = 0x01;
2718 c
->Request
.CDB
[2] = page_code
;
2720 c
->Request
.CDBLen
= 6;
2721 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2722 c
->Request
.Type
.Direction
= XFER_READ
;
2723 c
->Request
.Timeout
= 0;
2724 c
->Request
.CDB
[0] = HPSA_INQUIRY
;
2725 c
->Request
.CDB
[4] = size
& 0xFF;
2727 case HPSA_REPORT_LOG
:
2728 case HPSA_REPORT_PHYS
:
2729 /* Talking to controller so It's a physical command
2730 mode = 00 target = 0. Nothing to write.
2732 c
->Request
.CDBLen
= 12;
2733 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2734 c
->Request
.Type
.Direction
= XFER_READ
;
2735 c
->Request
.Timeout
= 0;
2736 c
->Request
.CDB
[0] = cmd
;
2737 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
2738 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
2739 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
2740 c
->Request
.CDB
[9] = size
& 0xFF;
2743 case HPSA_READ_CAPACITY
:
2744 c
->Request
.CDBLen
= 10;
2745 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2746 c
->Request
.Type
.Direction
= XFER_READ
;
2747 c
->Request
.Timeout
= 0;
2748 c
->Request
.CDB
[0] = cmd
;
2750 case HPSA_CACHE_FLUSH
:
2751 c
->Request
.CDBLen
= 12;
2752 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2753 c
->Request
.Type
.Direction
= XFER_WRITE
;
2754 c
->Request
.Timeout
= 0;
2755 c
->Request
.CDB
[0] = BMIC_WRITE
;
2756 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
2758 case TEST_UNIT_READY
:
2759 c
->Request
.CDBLen
= 6;
2760 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2761 c
->Request
.Type
.Direction
= XFER_NONE
;
2762 c
->Request
.Timeout
= 0;
2765 dev_warn(&h
->pdev
->dev
, "unknown command 0x%c\n", cmd
);
2769 } else if (cmd_type
== TYPE_MSG
) {
2772 case HPSA_DEVICE_RESET_MSG
:
2773 c
->Request
.CDBLen
= 16;
2774 c
->Request
.Type
.Type
= 1; /* It is a MSG not a CMD */
2775 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2776 c
->Request
.Type
.Direction
= XFER_NONE
;
2777 c
->Request
.Timeout
= 0; /* Don't time out */
2778 c
->Request
.CDB
[0] = 0x01; /* RESET_MSG is 0x01 */
2779 c
->Request
.CDB
[1] = 0x03; /* Reset target above */
2780 /* If bytes 4-7 are zero, it means reset the */
2782 c
->Request
.CDB
[4] = 0x00;
2783 c
->Request
.CDB
[5] = 0x00;
2784 c
->Request
.CDB
[6] = 0x00;
2785 c
->Request
.CDB
[7] = 0x00;
2789 dev_warn(&h
->pdev
->dev
, "unknown message type %d\n",
2794 dev_warn(&h
->pdev
->dev
, "unknown command type %d\n", cmd_type
);
2798 switch (c
->Request
.Type
.Direction
) {
2800 pci_dir
= PCI_DMA_FROMDEVICE
;
2803 pci_dir
= PCI_DMA_TODEVICE
;
2806 pci_dir
= PCI_DMA_NONE
;
2809 pci_dir
= PCI_DMA_BIDIRECTIONAL
;
2812 hpsa_map_one(h
->pdev
, c
, buff
, size
, pci_dir
);
2818 * Map (physical) PCI mem into (virtual) kernel space
2820 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
2822 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
2823 ulong page_offs
= ((ulong
) base
) - page_base
;
2824 void __iomem
*page_remapped
= ioremap(page_base
, page_offs
+ size
);
2826 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
2829 /* Takes cmds off the submission queue and sends them to the hardware,
2830 * then puts them on the queue of cmds waiting for completion.
2832 static void start_io(struct ctlr_info
*h
)
2834 struct CommandList
*c
;
2836 while (!hlist_empty(&h
->reqQ
)) {
2837 c
= hlist_entry(h
->reqQ
.first
, struct CommandList
, list
);
2838 /* can't do anything if fifo is full */
2839 if ((h
->access
.fifo_full(h
))) {
2840 dev_warn(&h
->pdev
->dev
, "fifo full\n");
2844 /* Get the first entry from the Request Q */
2848 /* Tell the controller execute command */
2849 h
->access
.submit_command(h
, c
);
2851 /* Put job onto the completed Q */
2856 static inline unsigned long get_next_completion(struct ctlr_info
*h
)
2858 return h
->access
.command_completed(h
);
2861 static inline bool interrupt_pending(struct ctlr_info
*h
)
2863 return h
->access
.intr_pending(h
);
2866 static inline long interrupt_not_for_us(struct ctlr_info
*h
)
2868 return !(h
->msi_vector
|| h
->msix_vector
) &&
2869 ((h
->access
.intr_pending(h
) == 0) ||
2870 (h
->interrupts_enabled
== 0));
2873 static inline int bad_tag(struct ctlr_info
*h
, u32 tag_index
,
2876 if (unlikely(tag_index
>= h
->nr_cmds
)) {
2877 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
2883 static inline void finish_cmd(struct CommandList
*c
, u32 raw_tag
)
2886 if (likely(c
->cmd_type
== CMD_SCSI
))
2887 complete_scsi_command(c
, 0, raw_tag
);
2888 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
2889 complete(c
->waiting
);
2892 static inline u32
hpsa_tag_contains_index(u32 tag
)
2894 #define DIRECT_LOOKUP_BIT 0x10
2895 return tag
& DIRECT_LOOKUP_BIT
;
2898 static inline u32
hpsa_tag_to_index(u32 tag
)
2900 #define DIRECT_LOOKUP_SHIFT 5
2901 return tag
>> DIRECT_LOOKUP_SHIFT
;
2904 static inline u32
hpsa_tag_discard_error_bits(u32 tag
)
2906 #define HPSA_ERROR_BITS 0x03
2907 return tag
& ~HPSA_ERROR_BITS
;
2910 /* process completion of an indexed ("direct lookup") command */
2911 static inline u32
process_indexed_cmd(struct ctlr_info
*h
,
2915 struct CommandList
*c
;
2917 tag_index
= hpsa_tag_to_index(raw_tag
);
2918 if (bad_tag(h
, tag_index
, raw_tag
))
2919 return next_command(h
);
2920 c
= h
->cmd_pool
+ tag_index
;
2921 finish_cmd(c
, raw_tag
);
2922 return next_command(h
);
2925 /* process completion of a non-indexed command */
2926 static inline u32
process_nonindexed_cmd(struct ctlr_info
*h
,
2930 struct CommandList
*c
= NULL
;
2931 struct hlist_node
*tmp
;
2933 tag
= hpsa_tag_discard_error_bits(raw_tag
);
2934 hlist_for_each_entry(c
, tmp
, &h
->cmpQ
, list
) {
2935 if ((c
->busaddr
& 0xFFFFFFE0) == (tag
& 0xFFFFFFE0)) {
2936 finish_cmd(c
, raw_tag
);
2937 return next_command(h
);
2940 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
2941 return next_command(h
);
2944 static irqreturn_t
do_hpsa_intr(int irq
, void *dev_id
)
2946 struct ctlr_info
*h
= dev_id
;
2947 unsigned long flags
;
2950 if (interrupt_not_for_us(h
))
2952 spin_lock_irqsave(&h
->lock
, flags
);
2953 raw_tag
= get_next_completion(h
);
2954 while (raw_tag
!= FIFO_EMPTY
) {
2955 if (hpsa_tag_contains_index(raw_tag
))
2956 raw_tag
= process_indexed_cmd(h
, raw_tag
);
2958 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
2960 spin_unlock_irqrestore(&h
->lock
, flags
);
2964 /* Send a message CDB to the firmwart. */
2965 static __devinit
int hpsa_message(struct pci_dev
*pdev
, unsigned char opcode
,
2969 struct CommandListHeader CommandHeader
;
2970 struct RequestBlock Request
;
2971 struct ErrDescriptor ErrorDescriptor
;
2973 struct Command
*cmd
;
2974 static const size_t cmd_sz
= sizeof(*cmd
) +
2975 sizeof(cmd
->ErrorDescriptor
);
2977 uint32_t paddr32
, tag
;
2978 void __iomem
*vaddr
;
2981 vaddr
= pci_ioremap_bar(pdev
, 0);
2985 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
2986 * CCISS commands, so they must be allocated from the lower 4GiB of
2989 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
2995 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
3001 /* This must fit, because of the 32-bit consistent DMA mask. Also,
3002 * although there's no guarantee, we assume that the address is at
3003 * least 4-byte aligned (most likely, it's page-aligned).
3007 cmd
->CommandHeader
.ReplyQueue
= 0;
3008 cmd
->CommandHeader
.SGList
= 0;
3009 cmd
->CommandHeader
.SGTotal
= 0;
3010 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
3011 cmd
->CommandHeader
.Tag
.upper
= 0;
3012 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
3014 cmd
->Request
.CDBLen
= 16;
3015 cmd
->Request
.Type
.Type
= TYPE_MSG
;
3016 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
3017 cmd
->Request
.Type
.Direction
= XFER_NONE
;
3018 cmd
->Request
.Timeout
= 0; /* Don't time out */
3019 cmd
->Request
.CDB
[0] = opcode
;
3020 cmd
->Request
.CDB
[1] = type
;
3021 memset(&cmd
->Request
.CDB
[2], 0, 14); /* rest of the CDB is reserved */
3022 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(*cmd
);
3023 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
3024 cmd
->ErrorDescriptor
.Len
= sizeof(struct ErrorInfo
);
3026 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
3028 for (i
= 0; i
< HPSA_MSG_SEND_RETRY_LIMIT
; i
++) {
3029 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
3030 if (hpsa_tag_discard_error_bits(tag
) == paddr32
)
3032 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS
);
3037 /* we leak the DMA buffer here ... no choice since the controller could
3038 * still complete the command.
3040 if (i
== HPSA_MSG_SEND_RETRY_LIMIT
) {
3041 dev_err(&pdev
->dev
, "controller message %02x:%02x timed out\n",
3046 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
3048 if (tag
& HPSA_ERROR_BIT
) {
3049 dev_err(&pdev
->dev
, "controller message %02x:%02x failed\n",
3054 dev_info(&pdev
->dev
, "controller message %02x:%02x succeeded\n",
3059 #define hpsa_soft_reset_controller(p) hpsa_message(p, 1, 0)
3060 #define hpsa_noop(p) hpsa_message(p, 3, 0)
3062 static __devinit
int hpsa_reset_msi(struct pci_dev
*pdev
)
3064 /* the #defines are stolen from drivers/pci/msi.h. */
3065 #define msi_control_reg(base) (base + PCI_MSI_FLAGS)
3066 #define PCI_MSIX_FLAGS_ENABLE (1 << 15)
3071 pos
= pci_find_capability(pdev
, PCI_CAP_ID_MSI
);
3073 pci_read_config_word(pdev
, msi_control_reg(pos
), &control
);
3074 if (control
& PCI_MSI_FLAGS_ENABLE
) {
3075 dev_info(&pdev
->dev
, "resetting MSI\n");
3076 pci_write_config_word(pdev
, msi_control_reg(pos
),
3077 control
& ~PCI_MSI_FLAGS_ENABLE
);
3081 pos
= pci_find_capability(pdev
, PCI_CAP_ID_MSIX
);
3083 pci_read_config_word(pdev
, msi_control_reg(pos
), &control
);
3084 if (control
& PCI_MSIX_FLAGS_ENABLE
) {
3085 dev_info(&pdev
->dev
, "resetting MSI-X\n");
3086 pci_write_config_word(pdev
, msi_control_reg(pos
),
3087 control
& ~PCI_MSIX_FLAGS_ENABLE
);
3094 /* This does a hard reset of the controller using PCI power management
3097 static __devinit
int hpsa_hard_reset_controller(struct pci_dev
*pdev
)
3099 u16 pmcsr
, saved_config_space
[32];
3102 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
3104 /* This is very nearly the same thing as
3106 * pci_save_state(pci_dev);
3107 * pci_set_power_state(pci_dev, PCI_D3hot);
3108 * pci_set_power_state(pci_dev, PCI_D0);
3109 * pci_restore_state(pci_dev);
3111 * but we can't use these nice canned kernel routines on
3112 * kexec, because they also check the MSI/MSI-X state in PCI
3113 * configuration space and do the wrong thing when it is
3114 * set/cleared. Also, the pci_save/restore_state functions
3115 * violate the ordering requirements for restoring the
3116 * configuration space from the CCISS document (see the
3117 * comment below). So we roll our own ....
3120 for (i
= 0; i
< 32; i
++)
3121 pci_read_config_word(pdev
, 2*i
, &saved_config_space
[i
]);
3123 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
3126 "hpsa_reset_controller: PCI PM not supported\n");
3130 /* Quoting from the Open CISS Specification: "The Power
3131 * Management Control/Status Register (CSR) controls the power
3132 * state of the device. The normal operating state is D0,
3133 * CSR=00h. The software off state is D3, CSR=03h. To reset
3134 * the controller, place the interface device in D3 then to
3135 * D0, this causes a secondary PCI reset which will reset the
3139 /* enter the D3hot power management state */
3140 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
3141 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
3143 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
3147 /* enter the D0 power management state */
3148 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
3150 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
3154 /* Restore the PCI configuration space. The Open CISS
3155 * Specification says, "Restore the PCI Configuration
3156 * Registers, offsets 00h through 60h. It is important to
3157 * restore the command register, 16-bits at offset 04h,
3158 * last. Do not restore the configuration status register,
3159 * 16-bits at offset 06h." Note that the offset is 2*i.
3161 for (i
= 0; i
< 32; i
++) {
3162 if (i
== 2 || i
== 3)
3164 pci_write_config_word(pdev
, 2*i
, saved_config_space
[i
]);
3167 pci_write_config_word(pdev
, 4, saved_config_space
[2]);
3173 * We cannot read the structure directly, for portability we must use
3175 * This is for debug only.
3178 static void print_cfg_table(struct device
*dev
, struct CfgTable
*tb
)
3183 dev_info(dev
, "Controller Configuration information\n");
3184 dev_info(dev
, "------------------------------------\n");
3185 for (i
= 0; i
< 4; i
++)
3186 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3187 temp_name
[4] = '\0';
3188 dev_info(dev
, " Signature = %s\n", temp_name
);
3189 dev_info(dev
, " Spec Number = %d\n", readl(&(tb
->SpecValence
)));
3190 dev_info(dev
, " Transport methods supported = 0x%x\n",
3191 readl(&(tb
->TransportSupport
)));
3192 dev_info(dev
, " Transport methods active = 0x%x\n",
3193 readl(&(tb
->TransportActive
)));
3194 dev_info(dev
, " Requested transport Method = 0x%x\n",
3195 readl(&(tb
->HostWrite
.TransportRequest
)));
3196 dev_info(dev
, " Coalesce Interrupt Delay = 0x%x\n",
3197 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3198 dev_info(dev
, " Coalesce Interrupt Count = 0x%x\n",
3199 readl(&(tb
->HostWrite
.CoalIntCount
)));
3200 dev_info(dev
, " Max outstanding commands = 0x%d\n",
3201 readl(&(tb
->CmdsOutMax
)));
3202 dev_info(dev
, " Bus Types = 0x%x\n", readl(&(tb
->BusTypes
)));
3203 for (i
= 0; i
< 16; i
++)
3204 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3205 temp_name
[16] = '\0';
3206 dev_info(dev
, " Server Name = %s\n", temp_name
);
3207 dev_info(dev
, " Heartbeat Counter = 0x%x\n\n\n",
3208 readl(&(tb
->HeartBeat
)));
3210 #endif /* HPSA_DEBUG */
3212 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3214 int i
, offset
, mem_type
, bar_type
;
3216 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
3219 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3220 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
3221 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
3224 mem_type
= pci_resource_flags(pdev
, i
) &
3225 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
3227 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
3228 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
3229 offset
+= 4; /* 32 bit */
3231 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
3234 default: /* reserved in PCI 2.2 */
3235 dev_warn(&pdev
->dev
,
3236 "base address is invalid\n");
3241 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
3247 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
3248 * controllers that are capable. If not, we use IO-APIC mode.
3251 static void __devinit
hpsa_interrupt_mode(struct ctlr_info
*h
,
3252 struct pci_dev
*pdev
, u32 board_id
)
3254 #ifdef CONFIG_PCI_MSI
3256 struct msix_entry hpsa_msix_entries
[4] = { {0, 0}, {0, 1},
3260 /* Some boards advertise MSI but don't really support it */
3261 if ((board_id
== 0x40700E11) ||
3262 (board_id
== 0x40800E11) ||
3263 (board_id
== 0x40820E11) || (board_id
== 0x40830E11))
3264 goto default_int_mode
;
3265 if (pci_find_capability(pdev
, PCI_CAP_ID_MSIX
)) {
3266 dev_info(&pdev
->dev
, "MSIX\n");
3267 err
= pci_enable_msix(pdev
, hpsa_msix_entries
, 4);
3269 h
->intr
[0] = hpsa_msix_entries
[0].vector
;
3270 h
->intr
[1] = hpsa_msix_entries
[1].vector
;
3271 h
->intr
[2] = hpsa_msix_entries
[2].vector
;
3272 h
->intr
[3] = hpsa_msix_entries
[3].vector
;
3277 dev_warn(&pdev
->dev
, "only %d MSI-X vectors "
3278 "available\n", err
);
3279 goto default_int_mode
;
3281 dev_warn(&pdev
->dev
, "MSI-X init failed %d\n",
3283 goto default_int_mode
;
3286 if (pci_find_capability(pdev
, PCI_CAP_ID_MSI
)) {
3287 dev_info(&pdev
->dev
, "MSI\n");
3288 if (!pci_enable_msi(pdev
))
3291 dev_warn(&pdev
->dev
, "MSI init failed\n");
3294 #endif /* CONFIG_PCI_MSI */
3295 /* if we get here we're going to use the default interrupt mode */
3296 h
->intr
[PERF_MODE_INT
] = pdev
->irq
;
3299 static int hpsa_pci_init(struct ctlr_info
*h
, struct pci_dev
*pdev
)
3301 ushort subsystem_vendor_id
, subsystem_device_id
, command
;
3302 u32 board_id
, scratchpad
= 0;
3305 u64 cfg_base_addr_index
;
3307 int i
, prod_index
, err
;
3309 subsystem_vendor_id
= pdev
->subsystem_vendor
;
3310 subsystem_device_id
= pdev
->subsystem_device
;
3311 board_id
= (((u32
) (subsystem_device_id
<< 16) & 0xffff0000) |
3312 subsystem_vendor_id
);
3314 for (i
= 0; i
< ARRAY_SIZE(products
); i
++)
3315 if (board_id
== products
[i
].board_id
)
3320 if (prod_index
== ARRAY_SIZE(products
)) {
3322 if (subsystem_vendor_id
!= PCI_VENDOR_ID_HP
||
3324 dev_warn(&pdev
->dev
, "unrecognized board ID:"
3325 " 0x%08lx, ignoring.\n",
3326 (unsigned long) board_id
);
3330 /* check to see if controller has been disabled
3331 * BEFORE trying to enable it
3333 (void)pci_read_config_word(pdev
, PCI_COMMAND
, &command
);
3334 if (!(command
& 0x02)) {
3335 dev_warn(&pdev
->dev
, "controller appears to be disabled\n");
3339 err
= pci_enable_device(pdev
);
3341 dev_warn(&pdev
->dev
, "unable to enable PCI device\n");
3345 err
= pci_request_regions(pdev
, "hpsa");
3347 dev_err(&pdev
->dev
, "cannot obtain PCI resources, aborting\n");
3351 /* If the kernel supports MSI/MSI-X we will try to enable that,
3352 * else we use the IO-APIC interrupt assigned to us by system ROM.
3354 hpsa_interrupt_mode(h
, pdev
, board_id
);
3356 /* find the memory BAR */
3357 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3358 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
)
3361 if (i
== DEVICE_COUNT_RESOURCE
) {
3362 dev_warn(&pdev
->dev
, "no memory BAR found\n");
3364 goto err_out_free_res
;
3367 h
->paddr
= pci_resource_start(pdev
, i
); /* addressing mode bits
3371 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
3373 /* Wait for the board to become ready. */
3374 for (i
= 0; i
< HPSA_BOARD_READY_ITERATIONS
; i
++) {
3375 scratchpad
= readl(h
->vaddr
+ SA5_SCRATCHPAD_OFFSET
);
3376 if (scratchpad
== HPSA_FIRMWARE_READY
)
3378 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS
);
3380 if (scratchpad
!= HPSA_FIRMWARE_READY
) {
3381 dev_warn(&pdev
->dev
, "board not ready, timed out.\n");
3383 goto err_out_free_res
;
3386 /* get the address index number */
3387 cfg_base_addr
= readl(h
->vaddr
+ SA5_CTCFG_OFFSET
);
3388 cfg_base_addr
&= (u32
) 0x0000ffff;
3389 cfg_base_addr_index
= find_PCI_BAR_index(pdev
, cfg_base_addr
);
3390 if (cfg_base_addr_index
== -1) {
3391 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index\n");
3393 goto err_out_free_res
;
3396 cfg_offset
= readl(h
->vaddr
+ SA5_CTMEM_OFFSET
);
3397 h
->cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
3398 cfg_base_addr_index
) + cfg_offset
,
3399 sizeof(h
->cfgtable
));
3400 /* Find performant mode table. */
3401 trans_offset
= readl(&(h
->cfgtable
->TransMethodOffset
));
3402 h
->transtable
= remap_pci_mem(pci_resource_start(pdev
,
3403 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
3404 sizeof(*h
->transtable
));
3406 h
->board_id
= board_id
;
3407 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
3408 h
->product_name
= products
[prod_index
].product_name
;
3409 h
->access
= *(products
[prod_index
].access
);
3410 /* Allow room for some ioctls */
3411 h
->nr_cmds
= h
->max_commands
- 4;
3413 if ((readb(&h
->cfgtable
->Signature
[0]) != 'C') ||
3414 (readb(&h
->cfgtable
->Signature
[1]) != 'I') ||
3415 (readb(&h
->cfgtable
->Signature
[2]) != 'S') ||
3416 (readb(&h
->cfgtable
->Signature
[3]) != 'S')) {
3417 dev_warn(&pdev
->dev
, "not a valid CISS config table\n");
3419 goto err_out_free_res
;
3423 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
3425 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
3427 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
3431 /* Disabling DMA prefetch for the P600
3432 * An ASIC bug may result in a prefetch beyond
3435 if (board_id
== 0x3225103C) {
3437 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
3438 dma_prefetch
|= 0x8000;
3439 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
3442 h
->max_commands
= readl(&(h
->cfgtable
->CmdsOutMax
));
3443 /* Update the field, and then ring the doorbell */
3444 writel(CFGTBL_Trans_Simple
, &(h
->cfgtable
->HostWrite
.TransportRequest
));
3445 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
3447 /* under certain very rare conditions, this can take awhile.
3448 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3449 * as we enter this code.)
3451 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
3452 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
3454 /* delay and try again */
3459 print_cfg_table(&pdev
->dev
, h
->cfgtable
);
3460 #endif /* HPSA_DEBUG */
3462 if (!(readl(&(h
->cfgtable
->TransportActive
)) & CFGTBL_Trans_Simple
)) {
3463 dev_warn(&pdev
->dev
, "unable to get board into simple mode\n");
3465 goto err_out_free_res
;
3471 * Deliberately omit pci_disable_device(): it does something nasty to
3472 * Smart Array controllers that pci_enable_device does not undo
3474 pci_release_regions(pdev
);
3478 static void __devinit
hpsa_hba_inquiry(struct ctlr_info
*h
)
3482 #define HBA_INQUIRY_BYTE_COUNT 64
3483 h
->hba_inquiry_data
= kmalloc(HBA_INQUIRY_BYTE_COUNT
, GFP_KERNEL
);
3484 if (!h
->hba_inquiry_data
)
3486 rc
= hpsa_scsi_do_inquiry(h
, RAID_CTLR_LUNID
, 0,
3487 h
->hba_inquiry_data
, HBA_INQUIRY_BYTE_COUNT
);
3489 kfree(h
->hba_inquiry_data
);
3490 h
->hba_inquiry_data
= NULL
;
3494 static int __devinit
hpsa_init_one(struct pci_dev
*pdev
,
3495 const struct pci_device_id
*ent
)
3499 struct ctlr_info
*h
;
3501 if (number_of_controllers
== 0)
3502 printk(KERN_INFO DRIVER_NAME
"\n");
3503 if (reset_devices
) {
3504 /* Reset the controller with a PCI power-cycle */
3505 if (hpsa_hard_reset_controller(pdev
) || hpsa_reset_msi(pdev
))
3508 /* Some devices (notably the HP Smart Array 5i Controller)
3509 need a little pause here */
3510 msleep(HPSA_POST_RESET_PAUSE_MSECS
);
3512 /* Now try to get the controller to respond to a no-op */
3513 for (i
= 0; i
< HPSA_POST_RESET_NOOP_RETRIES
; i
++) {
3514 if (hpsa_noop(pdev
) == 0)
3517 dev_warn(&pdev
->dev
, "no-op failed%s\n",
3518 (i
< 11 ? "; re-trying" : ""));
3522 /* Command structures must be aligned on a 32-byte boundary because
3523 * the 5 lower bits of the address are used by the hardware. and by
3524 * the driver. See comments in hpsa.h for more info.
3526 #define COMMANDLIST_ALIGNMENT 32
3527 BUILD_BUG_ON(sizeof(struct CommandList
) % COMMANDLIST_ALIGNMENT
);
3528 h
= kzalloc(sizeof(*h
), GFP_KERNEL
);
3532 h
->busy_initializing
= 1;
3533 INIT_HLIST_HEAD(&h
->cmpQ
);
3534 INIT_HLIST_HEAD(&h
->reqQ
);
3535 mutex_init(&h
->busy_shutting_down
);
3536 init_completion(&h
->scan_wait
);
3537 rc
= hpsa_pci_init(h
, pdev
);
3541 sprintf(h
->devname
, "hpsa%d", number_of_controllers
);
3542 h
->ctlr
= number_of_controllers
;
3543 number_of_controllers
++;
3546 /* configure PCI DMA stuff */
3547 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(64));
3551 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3555 dev_err(&pdev
->dev
, "no suitable DMA available\n");
3560 /* make sure the board interrupts are off */
3561 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
3562 rc
= request_irq(h
->intr
[PERF_MODE_INT
], do_hpsa_intr
,
3563 IRQF_DISABLED
, h
->devname
, h
);
3565 dev_err(&pdev
->dev
, "unable to get irq %d for %s\n",
3566 h
->intr
[PERF_MODE_INT
], h
->devname
);
3570 dev_info(&pdev
->dev
, "%s: <0x%x> at IRQ %d%s using DAC\n",
3571 h
->devname
, pdev
->device
,
3572 h
->intr
[PERF_MODE_INT
], dac
? "" : " not");
3575 kmalloc(((h
->nr_cmds
+ BITS_PER_LONG
-
3576 1) / BITS_PER_LONG
) * sizeof(unsigned long), GFP_KERNEL
);
3577 h
->cmd_pool
= pci_alloc_consistent(h
->pdev
,
3578 h
->nr_cmds
* sizeof(*h
->cmd_pool
),
3579 &(h
->cmd_pool_dhandle
));
3580 h
->errinfo_pool
= pci_alloc_consistent(h
->pdev
,
3581 h
->nr_cmds
* sizeof(*h
->errinfo_pool
),
3582 &(h
->errinfo_pool_dhandle
));
3583 if ((h
->cmd_pool_bits
== NULL
)
3584 || (h
->cmd_pool
== NULL
)
3585 || (h
->errinfo_pool
== NULL
)) {
3586 dev_err(&pdev
->dev
, "out of memory");
3590 spin_lock_init(&h
->lock
);
3591 spin_lock_init(&h
->scan_lock
);
3592 init_waitqueue_head(&h
->scan_wait_queue
);
3593 h
->scan_finished
= 1; /* no scan currently in progress */
3595 pci_set_drvdata(pdev
, h
);
3596 memset(h
->cmd_pool_bits
, 0,
3597 ((h
->nr_cmds
+ BITS_PER_LONG
-
3598 1) / BITS_PER_LONG
) * sizeof(unsigned long));
3602 /* Turn the interrupts on so we can service requests */
3603 h
->access
.set_intr_mask(h
, HPSA_INTR_ON
);
3605 hpsa_put_ctlr_into_performant_mode(h
);
3606 hpsa_hba_inquiry(h
);
3607 hpsa_register_scsi(h
); /* hook ourselves into SCSI subsystem */
3608 h
->busy_initializing
= 0;
3612 kfree(h
->cmd_pool_bits
);
3614 pci_free_consistent(h
->pdev
,
3615 h
->nr_cmds
* sizeof(struct CommandList
),
3616 h
->cmd_pool
, h
->cmd_pool_dhandle
);
3617 if (h
->errinfo_pool
)
3618 pci_free_consistent(h
->pdev
,
3619 h
->nr_cmds
* sizeof(struct ErrorInfo
),
3621 h
->errinfo_pool_dhandle
);
3622 free_irq(h
->intr
[PERF_MODE_INT
], h
);
3625 h
->busy_initializing
= 0;
3630 static void hpsa_flush_cache(struct ctlr_info
*h
)
3633 struct CommandList
*c
;
3635 flush_buf
= kzalloc(4, GFP_KERNEL
);
3639 c
= cmd_special_alloc(h
);
3641 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
3644 fill_cmd(c
, HPSA_CACHE_FLUSH
, h
, flush_buf
, 4, 0,
3645 RAID_CTLR_LUNID
, TYPE_CMD
);
3646 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_TODEVICE
);
3647 if (c
->err_info
->CommandStatus
!= 0)
3648 dev_warn(&h
->pdev
->dev
,
3649 "error flushing cache on controller\n");
3650 cmd_special_free(h
, c
);
3655 static void hpsa_shutdown(struct pci_dev
*pdev
)
3657 struct ctlr_info
*h
;
3659 h
= pci_get_drvdata(pdev
);
3660 /* Turn board interrupts off and send the flush cache command
3661 * sendcmd will turn off interrupt, and send the flush...
3662 * To write all data in the battery backed cache to disks
3664 hpsa_flush_cache(h
);
3665 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
3666 free_irq(h
->intr
[PERF_MODE_INT
], h
);
3667 #ifdef CONFIG_PCI_MSI
3669 pci_disable_msix(h
->pdev
);
3670 else if (h
->msi_vector
)
3671 pci_disable_msi(h
->pdev
);
3672 #endif /* CONFIG_PCI_MSI */
3675 static void __devexit
hpsa_remove_one(struct pci_dev
*pdev
)
3677 struct ctlr_info
*h
;
3679 if (pci_get_drvdata(pdev
) == NULL
) {
3680 dev_err(&pdev
->dev
, "unable to remove device \n");
3683 h
= pci_get_drvdata(pdev
);
3684 mutex_lock(&h
->busy_shutting_down
);
3685 remove_from_scan_list(h
);
3686 hpsa_unregister_scsi(h
); /* unhook from SCSI subsystem */
3687 hpsa_shutdown(pdev
);
3689 pci_free_consistent(h
->pdev
,
3690 h
->nr_cmds
* sizeof(struct CommandList
),
3691 h
->cmd_pool
, h
->cmd_pool_dhandle
);
3692 pci_free_consistent(h
->pdev
,
3693 h
->nr_cmds
* sizeof(struct ErrorInfo
),
3694 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
3695 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
3696 h
->reply_pool
, h
->reply_pool_dhandle
);
3697 kfree(h
->cmd_pool_bits
);
3698 kfree(h
->blockFetchTable
);
3699 kfree(h
->hba_inquiry_data
);
3701 * Deliberately omit pci_disable_device(): it does something nasty to
3702 * Smart Array controllers that pci_enable_device does not undo
3704 pci_release_regions(pdev
);
3705 pci_set_drvdata(pdev
, NULL
);
3706 mutex_unlock(&h
->busy_shutting_down
);
3710 static int hpsa_suspend(__attribute__((unused
)) struct pci_dev
*pdev
,
3711 __attribute__((unused
)) pm_message_t state
)
3716 static int hpsa_resume(__attribute__((unused
)) struct pci_dev
*pdev
)
3721 static struct pci_driver hpsa_pci_driver
= {
3723 .probe
= hpsa_init_one
,
3724 .remove
= __devexit_p(hpsa_remove_one
),
3725 .id_table
= hpsa_pci_device_id
, /* id_table */
3726 .shutdown
= hpsa_shutdown
,
3727 .suspend
= hpsa_suspend
,
3728 .resume
= hpsa_resume
,
3731 /* Fill in bucket_map[], given nsgs (the max number of
3732 * scatter gather elements supported) and bucket[],
3733 * which is an array of 8 integers. The bucket[] array
3734 * contains 8 different DMA transfer sizes (in 16
3735 * byte increments) which the controller uses to fetch
3736 * commands. This function fills in bucket_map[], which
3737 * maps a given number of scatter gather elements to one of
3738 * the 8 DMA transfer sizes. The point of it is to allow the
3739 * controller to only do as much DMA as needed to fetch the
3740 * command, with the DMA transfer size encoded in the lower
3741 * bits of the command address.
3743 static void calc_bucket_map(int bucket
[], int num_buckets
,
3744 int nsgs
, int *bucket_map
)
3748 /* even a command with 0 SGs requires 4 blocks */
3749 #define MINIMUM_TRANSFER_BLOCKS 4
3750 #define NUM_BUCKETS 8
3751 /* Note, bucket_map must have nsgs+1 entries. */
3752 for (i
= 0; i
<= nsgs
; i
++) {
3753 /* Compute size of a command with i SG entries */
3754 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
3755 b
= num_buckets
; /* Assume the biggest bucket */
3756 /* Find the bucket that is just big enough */
3757 for (j
= 0; j
< 8; j
++) {
3758 if (bucket
[j
] >= size
) {
3763 /* for a command with i SG entries, use bucket b. */
3768 static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info
*h
)
3772 /* 5 = 1 s/g entry or 4k
3773 * 6 = 2 s/g entry or 8k
3774 * 8 = 4 s/g entry or 16k
3775 * 10 = 6 s/g entry or 24k
3777 int bft
[8] = {5, 6, 8, 10, 12, 20, 28, 35}; /* for scatter/gathers */
3780 unsigned long register_value
;
3782 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
3783 if (!(trans_support
& PERFORMANT_MODE
))
3786 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
3787 h
->max_sg_entries
= 32;
3788 /* Performant mode ring buffer and supporting data structures */
3789 h
->reply_pool_size
= h
->max_commands
* sizeof(u64
);
3790 h
->reply_pool
= pci_alloc_consistent(h
->pdev
, h
->reply_pool_size
,
3791 &(h
->reply_pool_dhandle
));
3793 /* Need a block fetch table for performant mode */
3794 h
->blockFetchTable
= kmalloc(((h
->max_sg_entries
+1) *
3795 sizeof(u32
)), GFP_KERNEL
);
3797 if ((h
->reply_pool
== NULL
)
3798 || (h
->blockFetchTable
== NULL
))
3801 h
->reply_pool_wraparound
= 1; /* spec: init to 1 */
3803 /* Controller spec: zero out this buffer. */
3804 memset(h
->reply_pool
, 0, h
->reply_pool_size
);
3805 h
->reply_pool_head
= h
->reply_pool
;
3807 trans_offset
= readl(&(h
->cfgtable
->TransMethodOffset
));
3808 bft
[7] = h
->max_sg_entries
+ 4;
3809 calc_bucket_map(bft
, ARRAY_SIZE(bft
), 32, h
->blockFetchTable
);
3810 for (i
= 0; i
< 8; i
++)
3811 writel(bft
[i
], &h
->transtable
->BlockFetch
[i
]);
3813 /* size of controller ring buffer */
3814 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
3815 writel(1, &h
->transtable
->RepQCount
);
3816 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
3817 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
3818 writel(h
->reply_pool_dhandle
, &h
->transtable
->RepQAddr0Low32
);
3819 writel(0, &h
->transtable
->RepQAddr0High32
);
3820 writel(CFGTBL_Trans_Performant
,
3821 &(h
->cfgtable
->HostWrite
.TransportRequest
));
3822 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
3823 /* under certain very rare conditions, this can take awhile.
3824 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3825 * as we enter this code.) */
3826 for (l
= 0; l
< MAX_CONFIG_WAIT
; l
++) {
3827 register_value
= readl(h
->vaddr
+ SA5_DOORBELL
);
3828 if (!(register_value
& CFGTBL_ChangeReq
))
3830 /* delay and try again */
3831 set_current_state(TASK_INTERRUPTIBLE
);
3832 schedule_timeout(10);
3834 register_value
= readl(&(h
->cfgtable
->TransportActive
));
3835 if (!(register_value
& CFGTBL_Trans_Performant
)) {
3836 dev_warn(&h
->pdev
->dev
, "unable to get board into"
3837 " performant mode\n");
3841 /* Change the access methods to the performant access methods */
3842 h
->access
= SA5_performant_access
;
3843 h
->transMethod
= CFGTBL_Trans_Performant
;
3849 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
3850 h
->reply_pool
, h
->reply_pool_dhandle
);
3851 kfree(h
->blockFetchTable
);
3855 * This is it. Register the PCI driver information for the cards we control
3856 * the OS will call our registered routines when it finds one of our cards.
3858 static int __init
hpsa_init(void)
3861 /* Start the scan thread */
3862 hpsa_scan_thread
= kthread_run(hpsa_scan_func
, NULL
, "hpsa_scan");
3863 if (IS_ERR(hpsa_scan_thread
)) {
3864 err
= PTR_ERR(hpsa_scan_thread
);
3867 err
= pci_register_driver(&hpsa_pci_driver
);
3869 kthread_stop(hpsa_scan_thread
);
3873 static void __exit
hpsa_cleanup(void)
3875 pci_unregister_driver(&hpsa_pci_driver
);
3876 kthread_stop(hpsa_scan_thread
);
3879 module_init(hpsa_init
);
3880 module_exit(hpsa_cleanup
);