2 * Disk Array driver for HP Smart Array SAS controllers
3 * Copyright 2000, 2009 Hewlett-Packard Development Company, L.P.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
12 * NON INFRINGEMENT. See the GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
22 #include <linux/module.h>
23 #include <linux/interrupt.h>
24 #include <linux/types.h>
25 #include <linux/pci.h>
26 #include <linux/kernel.h>
27 #include <linux/slab.h>
28 #include <linux/delay.h>
30 #include <linux/timer.h>
31 #include <linux/seq_file.h>
32 #include <linux/init.h>
33 #include <linux/spinlock.h>
34 #include <linux/compat.h>
35 #include <linux/blktrace_api.h>
36 #include <linux/uaccess.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/completion.h>
40 #include <linux/moduleparam.h>
41 #include <scsi/scsi.h>
42 #include <scsi/scsi_cmnd.h>
43 #include <scsi/scsi_device.h>
44 #include <scsi/scsi_host.h>
45 #include <scsi/scsi_tcq.h>
46 #include <linux/cciss_ioctl.h>
47 #include <linux/string.h>
48 #include <linux/bitmap.h>
49 #include <linux/atomic.h>
50 #include <linux/kthread.h>
51 #include <linux/jiffies.h>
55 /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */
56 #define HPSA_DRIVER_VERSION "2.0.2-1"
57 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
59 /* How long to wait (in milliseconds) for board to go into simple mode */
60 #define MAX_CONFIG_WAIT 30000
61 #define MAX_IOCTL_CONFIG_WAIT 1000
63 /*define how many times we will try a command because of bus resets */
64 #define MAX_CMD_RETRIES 3
66 /* Embedded module documentation macros - see modules.h */
67 MODULE_AUTHOR("Hewlett-Packard Company");
68 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
70 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
71 MODULE_VERSION(HPSA_DRIVER_VERSION
);
72 MODULE_LICENSE("GPL");
74 static int hpsa_allow_any
;
75 module_param(hpsa_allow_any
, int, S_IRUGO
|S_IWUSR
);
76 MODULE_PARM_DESC(hpsa_allow_any
,
77 "Allow hpsa driver to access unknown HP Smart Array hardware");
78 static int hpsa_simple_mode
;
79 module_param(hpsa_simple_mode
, int, S_IRUGO
|S_IWUSR
);
80 MODULE_PARM_DESC(hpsa_simple_mode
,
81 "Use 'simple mode' rather than 'performant mode'");
83 /* define the PCI info for the cards we can control */
84 static const struct pci_device_id hpsa_pci_device_id
[] = {
85 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3241},
86 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3243},
87 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3245},
88 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3247},
89 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3249},
90 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x324a},
91 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x324b},
92 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3233},
93 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3350},
94 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3351},
95 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3352},
96 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3353},
97 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3354},
98 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3355},
99 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3356},
100 {PCI_VENDOR_ID_HP
, PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
,
101 PCI_CLASS_STORAGE_RAID
<< 8, 0xffff << 8, 0},
105 MODULE_DEVICE_TABLE(pci
, hpsa_pci_device_id
);
107 /* board_id = Subsystem Device ID & Vendor ID
108 * product = Marketing Name for the board
109 * access = Address of the struct of function pointers
111 static struct board_type products
[] = {
112 {0x3241103C, "Smart Array P212", &SA5_access
},
113 {0x3243103C, "Smart Array P410", &SA5_access
},
114 {0x3245103C, "Smart Array P410i", &SA5_access
},
115 {0x3247103C, "Smart Array P411", &SA5_access
},
116 {0x3249103C, "Smart Array P812", &SA5_access
},
117 {0x324a103C, "Smart Array P712m", &SA5_access
},
118 {0x324b103C, "Smart Array P711m", &SA5_access
},
119 {0x3350103C, "Smart Array", &SA5_access
},
120 {0x3351103C, "Smart Array", &SA5_access
},
121 {0x3352103C, "Smart Array", &SA5_access
},
122 {0x3353103C, "Smart Array", &SA5_access
},
123 {0x3354103C, "Smart Array", &SA5_access
},
124 {0x3355103C, "Smart Array", &SA5_access
},
125 {0x3356103C, "Smart Array", &SA5_access
},
126 {0xFFFF103C, "Unknown Smart Array", &SA5_access
},
129 static int number_of_controllers
;
131 static struct list_head hpsa_ctlr_list
= LIST_HEAD_INIT(hpsa_ctlr_list
);
132 static spinlock_t lockup_detector_lock
;
133 static struct task_struct
*hpsa_lockup_detector
;
135 static irqreturn_t
do_hpsa_intr_intx(int irq
, void *dev_id
);
136 static irqreturn_t
do_hpsa_intr_msi(int irq
, void *dev_id
);
137 static int hpsa_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
);
138 static void start_io(struct ctlr_info
*h
);
141 static int hpsa_compat_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
);
144 static void cmd_free(struct ctlr_info
*h
, struct CommandList
*c
);
145 static void cmd_special_free(struct ctlr_info
*h
, struct CommandList
*c
);
146 static struct CommandList
*cmd_alloc(struct ctlr_info
*h
);
147 static struct CommandList
*cmd_special_alloc(struct ctlr_info
*h
);
148 static void fill_cmd(struct CommandList
*c
, u8 cmd
, struct ctlr_info
*h
,
149 void *buff
, size_t size
, u8 page_code
, unsigned char *scsi3addr
,
152 static int hpsa_scsi_queue_command(struct Scsi_Host
*h
, struct scsi_cmnd
*cmd
);
153 static void hpsa_scan_start(struct Scsi_Host
*);
154 static int hpsa_scan_finished(struct Scsi_Host
*sh
,
155 unsigned long elapsed_time
);
156 static int hpsa_change_queue_depth(struct scsi_device
*sdev
,
157 int qdepth
, int reason
);
159 static int hpsa_eh_device_reset_handler(struct scsi_cmnd
*scsicmd
);
160 static int hpsa_slave_alloc(struct scsi_device
*sdev
);
161 static void hpsa_slave_destroy(struct scsi_device
*sdev
);
163 static void hpsa_update_scsi_devices(struct ctlr_info
*h
, int hostno
);
164 static int check_for_unit_attention(struct ctlr_info
*h
,
165 struct CommandList
*c
);
166 static void check_ioctl_unit_attention(struct ctlr_info
*h
,
167 struct CommandList
*c
);
168 /* performant mode helper functions */
169 static void calc_bucket_map(int *bucket
, int num_buckets
,
170 int nsgs
, int *bucket_map
);
171 static __devinit
void hpsa_put_ctlr_into_performant_mode(struct ctlr_info
*h
);
172 static inline u32
next_command(struct ctlr_info
*h
);
173 static int __devinit
hpsa_find_cfg_addrs(struct pci_dev
*pdev
,
174 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
176 static int __devinit
hpsa_pci_find_memory_BAR(struct pci_dev
*pdev
,
177 unsigned long *memory_bar
);
178 static int __devinit
hpsa_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
);
179 static int __devinit
hpsa_wait_for_board_state(struct pci_dev
*pdev
,
180 void __iomem
*vaddr
, int wait_for_ready
);
181 #define BOARD_NOT_READY 0
182 #define BOARD_READY 1
184 static inline struct ctlr_info
*sdev_to_hba(struct scsi_device
*sdev
)
186 unsigned long *priv
= shost_priv(sdev
->host
);
187 return (struct ctlr_info
*) *priv
;
190 static inline struct ctlr_info
*shost_to_hba(struct Scsi_Host
*sh
)
192 unsigned long *priv
= shost_priv(sh
);
193 return (struct ctlr_info
*) *priv
;
196 static int check_for_unit_attention(struct ctlr_info
*h
,
197 struct CommandList
*c
)
199 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
202 switch (c
->err_info
->SenseInfo
[12]) {
204 dev_warn(&h
->pdev
->dev
, "hpsa%d: a state change "
205 "detected, command retried\n", h
->ctlr
);
208 dev_warn(&h
->pdev
->dev
, "hpsa%d: LUN failure "
209 "detected, action required\n", h
->ctlr
);
211 case REPORT_LUNS_CHANGED
:
212 dev_warn(&h
->pdev
->dev
, "hpsa%d: report LUN data "
213 "changed, action required\n", h
->ctlr
);
215 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
219 dev_warn(&h
->pdev
->dev
, "hpsa%d: a power on "
220 "or device reset detected\n", h
->ctlr
);
222 case UNIT_ATTENTION_CLEARED
:
223 dev_warn(&h
->pdev
->dev
, "hpsa%d: unit attention "
224 "cleared by another initiator\n", h
->ctlr
);
227 dev_warn(&h
->pdev
->dev
, "hpsa%d: unknown "
228 "unit attention detected\n", h
->ctlr
);
234 static ssize_t
host_store_rescan(struct device
*dev
,
235 struct device_attribute
*attr
,
236 const char *buf
, size_t count
)
239 struct Scsi_Host
*shost
= class_to_shost(dev
);
240 h
= shost_to_hba(shost
);
241 hpsa_scan_start(h
->scsi_host
);
245 static ssize_t
host_show_firmware_revision(struct device
*dev
,
246 struct device_attribute
*attr
, char *buf
)
249 struct Scsi_Host
*shost
= class_to_shost(dev
);
250 unsigned char *fwrev
;
252 h
= shost_to_hba(shost
);
253 if (!h
->hba_inquiry_data
)
255 fwrev
= &h
->hba_inquiry_data
[32];
256 return snprintf(buf
, 20, "%c%c%c%c\n",
257 fwrev
[0], fwrev
[1], fwrev
[2], fwrev
[3]);
260 static ssize_t
host_show_commands_outstanding(struct device
*dev
,
261 struct device_attribute
*attr
, char *buf
)
263 struct Scsi_Host
*shost
= class_to_shost(dev
);
264 struct ctlr_info
*h
= shost_to_hba(shost
);
266 return snprintf(buf
, 20, "%d\n", h
->commands_outstanding
);
269 static ssize_t
host_show_transport_mode(struct device
*dev
,
270 struct device_attribute
*attr
, char *buf
)
273 struct Scsi_Host
*shost
= class_to_shost(dev
);
275 h
= shost_to_hba(shost
);
276 return snprintf(buf
, 20, "%s\n",
277 h
->transMethod
& CFGTBL_Trans_Performant
?
278 "performant" : "simple");
281 /* List of controllers which cannot be hard reset on kexec with reset_devices */
282 static u32 unresettable_controller
[] = {
283 0x324a103C, /* Smart Array P712m */
284 0x324b103C, /* SmartArray P711m */
285 0x3223103C, /* Smart Array P800 */
286 0x3234103C, /* Smart Array P400 */
287 0x3235103C, /* Smart Array P400i */
288 0x3211103C, /* Smart Array E200i */
289 0x3212103C, /* Smart Array E200 */
290 0x3213103C, /* Smart Array E200i */
291 0x3214103C, /* Smart Array E200i */
292 0x3215103C, /* Smart Array E200i */
293 0x3237103C, /* Smart Array E500 */
294 0x323D103C, /* Smart Array P700m */
295 0x409C0E11, /* Smart Array 6400 */
296 0x409D0E11, /* Smart Array 6400 EM */
299 /* List of controllers which cannot even be soft reset */
300 static u32 soft_unresettable_controller
[] = {
301 /* Exclude 640x boards. These are two pci devices in one slot
302 * which share a battery backed cache module. One controls the
303 * cache, the other accesses the cache through the one that controls
304 * it. If we reset the one controlling the cache, the other will
305 * likely not be happy. Just forbid resetting this conjoined mess.
306 * The 640x isn't really supported by hpsa anyway.
308 0x409C0E11, /* Smart Array 6400 */
309 0x409D0E11, /* Smart Array 6400 EM */
312 static int ctlr_is_hard_resettable(u32 board_id
)
316 for (i
= 0; i
< ARRAY_SIZE(unresettable_controller
); i
++)
317 if (unresettable_controller
[i
] == board_id
)
322 static int ctlr_is_soft_resettable(u32 board_id
)
326 for (i
= 0; i
< ARRAY_SIZE(soft_unresettable_controller
); i
++)
327 if (soft_unresettable_controller
[i
] == board_id
)
332 static int ctlr_is_resettable(u32 board_id
)
334 return ctlr_is_hard_resettable(board_id
) ||
335 ctlr_is_soft_resettable(board_id
);
338 static ssize_t
host_show_resettable(struct device
*dev
,
339 struct device_attribute
*attr
, char *buf
)
342 struct Scsi_Host
*shost
= class_to_shost(dev
);
344 h
= shost_to_hba(shost
);
345 return snprintf(buf
, 20, "%d\n", ctlr_is_resettable(h
->board_id
));
348 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr
[])
350 return (scsi3addr
[3] & 0xC0) == 0x40;
353 static const char *raid_label
[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
356 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
358 static ssize_t
raid_level_show(struct device
*dev
,
359 struct device_attribute
*attr
, char *buf
)
362 unsigned char rlevel
;
364 struct scsi_device
*sdev
;
365 struct hpsa_scsi_dev_t
*hdev
;
368 sdev
= to_scsi_device(dev
);
369 h
= sdev_to_hba(sdev
);
370 spin_lock_irqsave(&h
->lock
, flags
);
371 hdev
= sdev
->hostdata
;
373 spin_unlock_irqrestore(&h
->lock
, flags
);
377 /* Is this even a logical drive? */
378 if (!is_logical_dev_addr_mode(hdev
->scsi3addr
)) {
379 spin_unlock_irqrestore(&h
->lock
, flags
);
380 l
= snprintf(buf
, PAGE_SIZE
, "N/A\n");
384 rlevel
= hdev
->raid_level
;
385 spin_unlock_irqrestore(&h
->lock
, flags
);
386 if (rlevel
> RAID_UNKNOWN
)
387 rlevel
= RAID_UNKNOWN
;
388 l
= snprintf(buf
, PAGE_SIZE
, "RAID %s\n", raid_label
[rlevel
]);
392 static ssize_t
lunid_show(struct device
*dev
,
393 struct device_attribute
*attr
, char *buf
)
396 struct scsi_device
*sdev
;
397 struct hpsa_scsi_dev_t
*hdev
;
399 unsigned char lunid
[8];
401 sdev
= to_scsi_device(dev
);
402 h
= sdev_to_hba(sdev
);
403 spin_lock_irqsave(&h
->lock
, flags
);
404 hdev
= sdev
->hostdata
;
406 spin_unlock_irqrestore(&h
->lock
, flags
);
409 memcpy(lunid
, hdev
->scsi3addr
, sizeof(lunid
));
410 spin_unlock_irqrestore(&h
->lock
, flags
);
411 return snprintf(buf
, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
412 lunid
[0], lunid
[1], lunid
[2], lunid
[3],
413 lunid
[4], lunid
[5], lunid
[6], lunid
[7]);
416 static ssize_t
unique_id_show(struct device
*dev
,
417 struct device_attribute
*attr
, char *buf
)
420 struct scsi_device
*sdev
;
421 struct hpsa_scsi_dev_t
*hdev
;
423 unsigned char sn
[16];
425 sdev
= to_scsi_device(dev
);
426 h
= sdev_to_hba(sdev
);
427 spin_lock_irqsave(&h
->lock
, flags
);
428 hdev
= sdev
->hostdata
;
430 spin_unlock_irqrestore(&h
->lock
, flags
);
433 memcpy(sn
, hdev
->device_id
, sizeof(sn
));
434 spin_unlock_irqrestore(&h
->lock
, flags
);
435 return snprintf(buf
, 16 * 2 + 2,
436 "%02X%02X%02X%02X%02X%02X%02X%02X"
437 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
438 sn
[0], sn
[1], sn
[2], sn
[3],
439 sn
[4], sn
[5], sn
[6], sn
[7],
440 sn
[8], sn
[9], sn
[10], sn
[11],
441 sn
[12], sn
[13], sn
[14], sn
[15]);
444 static DEVICE_ATTR(raid_level
, S_IRUGO
, raid_level_show
, NULL
);
445 static DEVICE_ATTR(lunid
, S_IRUGO
, lunid_show
, NULL
);
446 static DEVICE_ATTR(unique_id
, S_IRUGO
, unique_id_show
, NULL
);
447 static DEVICE_ATTR(rescan
, S_IWUSR
, NULL
, host_store_rescan
);
448 static DEVICE_ATTR(firmware_revision
, S_IRUGO
,
449 host_show_firmware_revision
, NULL
);
450 static DEVICE_ATTR(commands_outstanding
, S_IRUGO
,
451 host_show_commands_outstanding
, NULL
);
452 static DEVICE_ATTR(transport_mode
, S_IRUGO
,
453 host_show_transport_mode
, NULL
);
454 static DEVICE_ATTR(resettable
, S_IRUGO
,
455 host_show_resettable
, NULL
);
457 static struct device_attribute
*hpsa_sdev_attrs
[] = {
458 &dev_attr_raid_level
,
464 static struct device_attribute
*hpsa_shost_attrs
[] = {
466 &dev_attr_firmware_revision
,
467 &dev_attr_commands_outstanding
,
468 &dev_attr_transport_mode
,
469 &dev_attr_resettable
,
473 static struct scsi_host_template hpsa_driver_template
= {
474 .module
= THIS_MODULE
,
477 .queuecommand
= hpsa_scsi_queue_command
,
478 .scan_start
= hpsa_scan_start
,
479 .scan_finished
= hpsa_scan_finished
,
480 .change_queue_depth
= hpsa_change_queue_depth
,
482 .use_clustering
= ENABLE_CLUSTERING
,
483 .eh_device_reset_handler
= hpsa_eh_device_reset_handler
,
485 .slave_alloc
= hpsa_slave_alloc
,
486 .slave_destroy
= hpsa_slave_destroy
,
488 .compat_ioctl
= hpsa_compat_ioctl
,
490 .sdev_attrs
= hpsa_sdev_attrs
,
491 .shost_attrs
= hpsa_shost_attrs
,
496 /* Enqueuing and dequeuing functions for cmdlists. */
497 static inline void addQ(struct list_head
*list
, struct CommandList
*c
)
499 list_add_tail(&c
->list
, list
);
502 static inline u32
next_command(struct ctlr_info
*h
)
506 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
507 return h
->access
.command_completed(h
);
509 if ((*(h
->reply_pool_head
) & 1) == (h
->reply_pool_wraparound
)) {
510 a
= *(h
->reply_pool_head
); /* Next cmd in ring buffer */
511 (h
->reply_pool_head
)++;
512 h
->commands_outstanding
--;
516 /* Check for wraparound */
517 if (h
->reply_pool_head
== (h
->reply_pool
+ h
->max_commands
)) {
518 h
->reply_pool_head
= h
->reply_pool
;
519 h
->reply_pool_wraparound
^= 1;
524 /* set_performant_mode: Modify the tag for cciss performant
525 * set bit 0 for pull model, bits 3-1 for block fetch
528 static void set_performant_mode(struct ctlr_info
*h
, struct CommandList
*c
)
530 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
531 c
->busaddr
|= 1 | (h
->blockFetchTable
[c
->Header
.SGList
] << 1);
534 static void enqueue_cmd_and_start_io(struct ctlr_info
*h
,
535 struct CommandList
*c
)
539 set_performant_mode(h
, c
);
540 spin_lock_irqsave(&h
->lock
, flags
);
544 spin_unlock_irqrestore(&h
->lock
, flags
);
547 static inline void removeQ(struct CommandList
*c
)
549 if (WARN_ON(list_empty(&c
->list
)))
551 list_del_init(&c
->list
);
554 static inline int is_hba_lunid(unsigned char scsi3addr
[])
556 return memcmp(scsi3addr
, RAID_CTLR_LUNID
, 8) == 0;
559 static inline int is_scsi_rev_5(struct ctlr_info
*h
)
561 if (!h
->hba_inquiry_data
)
563 if ((h
->hba_inquiry_data
[2] & 0x07) == 5)
568 static int hpsa_find_target_lun(struct ctlr_info
*h
,
569 unsigned char scsi3addr
[], int bus
, int *target
, int *lun
)
571 /* finds an unused bus, target, lun for a new physical device
572 * assumes h->devlock is held
575 DECLARE_BITMAP(lun_taken
, HPSA_MAX_DEVICES
);
577 memset(&lun_taken
[0], 0, HPSA_MAX_DEVICES
>> 3);
579 for (i
= 0; i
< h
->ndevices
; i
++) {
580 if (h
->dev
[i
]->bus
== bus
&& h
->dev
[i
]->target
!= -1)
581 set_bit(h
->dev
[i
]->target
, lun_taken
);
584 for (i
= 0; i
< HPSA_MAX_DEVICES
; i
++) {
585 if (!test_bit(i
, lun_taken
)) {
596 /* Add an entry into h->dev[] array. */
597 static int hpsa_scsi_add_entry(struct ctlr_info
*h
, int hostno
,
598 struct hpsa_scsi_dev_t
*device
,
599 struct hpsa_scsi_dev_t
*added
[], int *nadded
)
601 /* assumes h->devlock is held */
604 unsigned char addr1
[8], addr2
[8];
605 struct hpsa_scsi_dev_t
*sd
;
607 if (n
>= HPSA_MAX_DEVICES
) {
608 dev_err(&h
->pdev
->dev
, "too many devices, some will be "
613 /* physical devices do not have lun or target assigned until now. */
614 if (device
->lun
!= -1)
615 /* Logical device, lun is already assigned. */
618 /* If this device a non-zero lun of a multi-lun device
619 * byte 4 of the 8-byte LUN addr will contain the logical
620 * unit no, zero otherise.
622 if (device
->scsi3addr
[4] == 0) {
623 /* This is not a non-zero lun of a multi-lun device */
624 if (hpsa_find_target_lun(h
, device
->scsi3addr
,
625 device
->bus
, &device
->target
, &device
->lun
) != 0)
630 /* This is a non-zero lun of a multi-lun device.
631 * Search through our list and find the device which
632 * has the same 8 byte LUN address, excepting byte 4.
633 * Assign the same bus and target for this new LUN.
634 * Use the logical unit number from the firmware.
636 memcpy(addr1
, device
->scsi3addr
, 8);
638 for (i
= 0; i
< n
; i
++) {
640 memcpy(addr2
, sd
->scsi3addr
, 8);
642 /* differ only in byte 4? */
643 if (memcmp(addr1
, addr2
, 8) == 0) {
644 device
->bus
= sd
->bus
;
645 device
->target
= sd
->target
;
646 device
->lun
= device
->scsi3addr
[4];
650 if (device
->lun
== -1) {
651 dev_warn(&h
->pdev
->dev
, "physical device with no LUN=0,"
652 " suspect firmware bug or unsupported hardware "
661 added
[*nadded
] = device
;
664 /* initially, (before registering with scsi layer) we don't
665 * know our hostno and we don't want to print anything first
666 * time anyway (the scsi layer's inquiries will show that info)
668 /* if (hostno != -1) */
669 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d added.\n",
670 scsi_device_type(device
->devtype
), hostno
,
671 device
->bus
, device
->target
, device
->lun
);
675 /* Replace an entry from h->dev[] array. */
676 static void hpsa_scsi_replace_entry(struct ctlr_info
*h
, int hostno
,
677 int entry
, struct hpsa_scsi_dev_t
*new_entry
,
678 struct hpsa_scsi_dev_t
*added
[], int *nadded
,
679 struct hpsa_scsi_dev_t
*removed
[], int *nremoved
)
681 /* assumes h->devlock is held */
682 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_DEVICES
);
683 removed
[*nremoved
] = h
->dev
[entry
];
687 * New physical devices won't have target/lun assigned yet
688 * so we need to preserve the values in the slot we are replacing.
690 if (new_entry
->target
== -1) {
691 new_entry
->target
= h
->dev
[entry
]->target
;
692 new_entry
->lun
= h
->dev
[entry
]->lun
;
695 h
->dev
[entry
] = new_entry
;
696 added
[*nadded
] = new_entry
;
698 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d changed.\n",
699 scsi_device_type(new_entry
->devtype
), hostno
, new_entry
->bus
,
700 new_entry
->target
, new_entry
->lun
);
703 /* Remove an entry from h->dev[] array. */
704 static void hpsa_scsi_remove_entry(struct ctlr_info
*h
, int hostno
, int entry
,
705 struct hpsa_scsi_dev_t
*removed
[], int *nremoved
)
707 /* assumes h->devlock is held */
709 struct hpsa_scsi_dev_t
*sd
;
711 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_DEVICES
);
714 removed
[*nremoved
] = h
->dev
[entry
];
717 for (i
= entry
; i
< h
->ndevices
-1; i
++)
718 h
->dev
[i
] = h
->dev
[i
+1];
720 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d removed.\n",
721 scsi_device_type(sd
->devtype
), hostno
, sd
->bus
, sd
->target
,
725 #define SCSI3ADDR_EQ(a, b) ( \
726 (a)[7] == (b)[7] && \
727 (a)[6] == (b)[6] && \
728 (a)[5] == (b)[5] && \
729 (a)[4] == (b)[4] && \
730 (a)[3] == (b)[3] && \
731 (a)[2] == (b)[2] && \
732 (a)[1] == (b)[1] && \
735 static void fixup_botched_add(struct ctlr_info
*h
,
736 struct hpsa_scsi_dev_t
*added
)
738 /* called when scsi_add_device fails in order to re-adjust
739 * h->dev[] to match the mid layer's view.
744 spin_lock_irqsave(&h
->lock
, flags
);
745 for (i
= 0; i
< h
->ndevices
; i
++) {
746 if (h
->dev
[i
] == added
) {
747 for (j
= i
; j
< h
->ndevices
-1; j
++)
748 h
->dev
[j
] = h
->dev
[j
+1];
753 spin_unlock_irqrestore(&h
->lock
, flags
);
757 static inline int device_is_the_same(struct hpsa_scsi_dev_t
*dev1
,
758 struct hpsa_scsi_dev_t
*dev2
)
760 /* we compare everything except lun and target as these
761 * are not yet assigned. Compare parts likely
764 if (memcmp(dev1
->scsi3addr
, dev2
->scsi3addr
,
765 sizeof(dev1
->scsi3addr
)) != 0)
767 if (memcmp(dev1
->device_id
, dev2
->device_id
,
768 sizeof(dev1
->device_id
)) != 0)
770 if (memcmp(dev1
->model
, dev2
->model
, sizeof(dev1
->model
)) != 0)
772 if (memcmp(dev1
->vendor
, dev2
->vendor
, sizeof(dev1
->vendor
)) != 0)
774 if (dev1
->devtype
!= dev2
->devtype
)
776 if (dev1
->bus
!= dev2
->bus
)
781 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
782 * and return needle location in *index. If scsi3addr matches, but not
783 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
784 * location in *index. If needle not found, return DEVICE_NOT_FOUND.
786 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t
*needle
,
787 struct hpsa_scsi_dev_t
*haystack
[], int haystack_size
,
791 #define DEVICE_NOT_FOUND 0
792 #define DEVICE_CHANGED 1
793 #define DEVICE_SAME 2
794 for (i
= 0; i
< haystack_size
; i
++) {
795 if (haystack
[i
] == NULL
) /* previously removed. */
797 if (SCSI3ADDR_EQ(needle
->scsi3addr
, haystack
[i
]->scsi3addr
)) {
799 if (device_is_the_same(needle
, haystack
[i
]))
802 return DEVICE_CHANGED
;
806 return DEVICE_NOT_FOUND
;
809 static void adjust_hpsa_scsi_table(struct ctlr_info
*h
, int hostno
,
810 struct hpsa_scsi_dev_t
*sd
[], int nsds
)
812 /* sd contains scsi3 addresses and devtypes, and inquiry
813 * data. This function takes what's in sd to be the current
814 * reality and updates h->dev[] to reflect that reality.
816 int i
, entry
, device_change
, changes
= 0;
817 struct hpsa_scsi_dev_t
*csd
;
819 struct hpsa_scsi_dev_t
**added
, **removed
;
820 int nadded
, nremoved
;
821 struct Scsi_Host
*sh
= NULL
;
823 added
= kzalloc(sizeof(*added
) * HPSA_MAX_DEVICES
, GFP_KERNEL
);
824 removed
= kzalloc(sizeof(*removed
) * HPSA_MAX_DEVICES
, GFP_KERNEL
);
826 if (!added
|| !removed
) {
827 dev_warn(&h
->pdev
->dev
, "out of memory in "
828 "adjust_hpsa_scsi_table\n");
832 spin_lock_irqsave(&h
->devlock
, flags
);
834 /* find any devices in h->dev[] that are not in
835 * sd[] and remove them from h->dev[], and for any
836 * devices which have changed, remove the old device
837 * info and add the new device info.
842 while (i
< h
->ndevices
) {
844 device_change
= hpsa_scsi_find_entry(csd
, sd
, nsds
, &entry
);
845 if (device_change
== DEVICE_NOT_FOUND
) {
847 hpsa_scsi_remove_entry(h
, hostno
, i
,
849 continue; /* remove ^^^, hence i not incremented */
850 } else if (device_change
== DEVICE_CHANGED
) {
852 hpsa_scsi_replace_entry(h
, hostno
, i
, sd
[entry
],
853 added
, &nadded
, removed
, &nremoved
);
854 /* Set it to NULL to prevent it from being freed
855 * at the bottom of hpsa_update_scsi_devices()
862 /* Now, make sure every device listed in sd[] is also
863 * listed in h->dev[], adding them if they aren't found
866 for (i
= 0; i
< nsds
; i
++) {
867 if (!sd
[i
]) /* if already added above. */
869 device_change
= hpsa_scsi_find_entry(sd
[i
], h
->dev
,
870 h
->ndevices
, &entry
);
871 if (device_change
== DEVICE_NOT_FOUND
) {
873 if (hpsa_scsi_add_entry(h
, hostno
, sd
[i
],
874 added
, &nadded
) != 0)
876 sd
[i
] = NULL
; /* prevent from being freed later. */
877 } else if (device_change
== DEVICE_CHANGED
) {
878 /* should never happen... */
880 dev_warn(&h
->pdev
->dev
,
881 "device unexpectedly changed.\n");
882 /* but if it does happen, we just ignore that device */
885 spin_unlock_irqrestore(&h
->devlock
, flags
);
887 /* Don't notify scsi mid layer of any changes the first time through
888 * (or if there are no changes) scsi_scan_host will do it later the
889 * first time through.
891 if (hostno
== -1 || !changes
)
895 /* Notify scsi mid layer of any removed devices */
896 for (i
= 0; i
< nremoved
; i
++) {
897 struct scsi_device
*sdev
=
898 scsi_device_lookup(sh
, removed
[i
]->bus
,
899 removed
[i
]->target
, removed
[i
]->lun
);
901 scsi_remove_device(sdev
);
902 scsi_device_put(sdev
);
904 /* We don't expect to get here.
905 * future cmds to this device will get selection
906 * timeout as if the device was gone.
908 dev_warn(&h
->pdev
->dev
, "didn't find c%db%dt%dl%d "
909 " for removal.", hostno
, removed
[i
]->bus
,
910 removed
[i
]->target
, removed
[i
]->lun
);
916 /* Notify scsi mid layer of any added devices */
917 for (i
= 0; i
< nadded
; i
++) {
918 if (scsi_add_device(sh
, added
[i
]->bus
,
919 added
[i
]->target
, added
[i
]->lun
) == 0)
921 dev_warn(&h
->pdev
->dev
, "scsi_add_device c%db%dt%dl%d failed, "
922 "device not added.\n", hostno
, added
[i
]->bus
,
923 added
[i
]->target
, added
[i
]->lun
);
924 /* now we have to remove it from h->dev,
925 * since it didn't get added to scsi mid layer
927 fixup_botched_add(h
, added
[i
]);
936 * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t *
937 * Assume's h->devlock is held.
939 static struct hpsa_scsi_dev_t
*lookup_hpsa_scsi_dev(struct ctlr_info
*h
,
940 int bus
, int target
, int lun
)
943 struct hpsa_scsi_dev_t
*sd
;
945 for (i
= 0; i
< h
->ndevices
; i
++) {
947 if (sd
->bus
== bus
&& sd
->target
== target
&& sd
->lun
== lun
)
953 /* link sdev->hostdata to our per-device structure. */
954 static int hpsa_slave_alloc(struct scsi_device
*sdev
)
956 struct hpsa_scsi_dev_t
*sd
;
960 h
= sdev_to_hba(sdev
);
961 spin_lock_irqsave(&h
->devlock
, flags
);
962 sd
= lookup_hpsa_scsi_dev(h
, sdev_channel(sdev
),
963 sdev_id(sdev
), sdev
->lun
);
966 spin_unlock_irqrestore(&h
->devlock
, flags
);
970 static void hpsa_slave_destroy(struct scsi_device
*sdev
)
975 static void hpsa_free_sg_chain_blocks(struct ctlr_info
*h
)
981 for (i
= 0; i
< h
->nr_cmds
; i
++) {
982 kfree(h
->cmd_sg_list
[i
]);
983 h
->cmd_sg_list
[i
] = NULL
;
985 kfree(h
->cmd_sg_list
);
986 h
->cmd_sg_list
= NULL
;
989 static int hpsa_allocate_sg_chain_blocks(struct ctlr_info
*h
)
993 if (h
->chainsize
<= 0)
996 h
->cmd_sg_list
= kzalloc(sizeof(*h
->cmd_sg_list
) * h
->nr_cmds
,
1000 for (i
= 0; i
< h
->nr_cmds
; i
++) {
1001 h
->cmd_sg_list
[i
] = kmalloc(sizeof(*h
->cmd_sg_list
[i
]) *
1002 h
->chainsize
, GFP_KERNEL
);
1003 if (!h
->cmd_sg_list
[i
])
1009 hpsa_free_sg_chain_blocks(h
);
1013 static void hpsa_map_sg_chain_block(struct ctlr_info
*h
,
1014 struct CommandList
*c
)
1016 struct SGDescriptor
*chain_sg
, *chain_block
;
1019 chain_sg
= &c
->SG
[h
->max_cmd_sg_entries
- 1];
1020 chain_block
= h
->cmd_sg_list
[c
->cmdindex
];
1021 chain_sg
->Ext
= HPSA_SG_CHAIN
;
1022 chain_sg
->Len
= sizeof(*chain_sg
) *
1023 (c
->Header
.SGTotal
- h
->max_cmd_sg_entries
);
1024 temp64
= pci_map_single(h
->pdev
, chain_block
, chain_sg
->Len
,
1026 chain_sg
->Addr
.lower
= (u32
) (temp64
& 0x0FFFFFFFFULL
);
1027 chain_sg
->Addr
.upper
= (u32
) ((temp64
>> 32) & 0x0FFFFFFFFULL
);
1030 static void hpsa_unmap_sg_chain_block(struct ctlr_info
*h
,
1031 struct CommandList
*c
)
1033 struct SGDescriptor
*chain_sg
;
1034 union u64bit temp64
;
1036 if (c
->Header
.SGTotal
<= h
->max_cmd_sg_entries
)
1039 chain_sg
= &c
->SG
[h
->max_cmd_sg_entries
- 1];
1040 temp64
.val32
.lower
= chain_sg
->Addr
.lower
;
1041 temp64
.val32
.upper
= chain_sg
->Addr
.upper
;
1042 pci_unmap_single(h
->pdev
, temp64
.val
, chain_sg
->Len
, PCI_DMA_TODEVICE
);
1045 static void complete_scsi_command(struct CommandList
*cp
)
1047 struct scsi_cmnd
*cmd
;
1048 struct ctlr_info
*h
;
1049 struct ErrorInfo
*ei
;
1051 unsigned char sense_key
;
1052 unsigned char asc
; /* additional sense code */
1053 unsigned char ascq
; /* additional sense code qualifier */
1054 unsigned long sense_data_size
;
1057 cmd
= (struct scsi_cmnd
*) cp
->scsi_cmd
;
1060 scsi_dma_unmap(cmd
); /* undo the DMA mappings */
1061 if (cp
->Header
.SGTotal
> h
->max_cmd_sg_entries
)
1062 hpsa_unmap_sg_chain_block(h
, cp
);
1064 cmd
->result
= (DID_OK
<< 16); /* host byte */
1065 cmd
->result
|= (COMMAND_COMPLETE
<< 8); /* msg byte */
1066 cmd
->result
|= ei
->ScsiStatus
;
1068 /* copy the sense data whether we need to or not. */
1069 if (SCSI_SENSE_BUFFERSIZE
< sizeof(ei
->SenseInfo
))
1070 sense_data_size
= SCSI_SENSE_BUFFERSIZE
;
1072 sense_data_size
= sizeof(ei
->SenseInfo
);
1073 if (ei
->SenseLen
< sense_data_size
)
1074 sense_data_size
= ei
->SenseLen
;
1076 memcpy(cmd
->sense_buffer
, ei
->SenseInfo
, sense_data_size
);
1077 scsi_set_resid(cmd
, ei
->ResidualCnt
);
1079 if (ei
->CommandStatus
== 0) {
1080 cmd
->scsi_done(cmd
);
1085 /* an error has occurred */
1086 switch (ei
->CommandStatus
) {
1088 case CMD_TARGET_STATUS
:
1089 if (ei
->ScsiStatus
) {
1091 sense_key
= 0xf & ei
->SenseInfo
[2];
1092 /* Get additional sense code */
1093 asc
= ei
->SenseInfo
[12];
1094 /* Get addition sense code qualifier */
1095 ascq
= ei
->SenseInfo
[13];
1098 if (ei
->ScsiStatus
== SAM_STAT_CHECK_CONDITION
) {
1099 if (check_for_unit_attention(h
, cp
)) {
1100 cmd
->result
= DID_SOFT_ERROR
<< 16;
1103 if (sense_key
== ILLEGAL_REQUEST
) {
1105 * SCSI REPORT_LUNS is commonly unsupported on
1106 * Smart Array. Suppress noisy complaint.
1108 if (cp
->Request
.CDB
[0] == REPORT_LUNS
)
1111 /* If ASC/ASCQ indicate Logical Unit
1112 * Not Supported condition,
1114 if ((asc
== 0x25) && (ascq
== 0x0)) {
1115 dev_warn(&h
->pdev
->dev
, "cp %p "
1116 "has check condition\n", cp
);
1121 if (sense_key
== NOT_READY
) {
1122 /* If Sense is Not Ready, Logical Unit
1123 * Not ready, Manual Intervention
1126 if ((asc
== 0x04) && (ascq
== 0x03)) {
1127 dev_warn(&h
->pdev
->dev
, "cp %p "
1128 "has check condition: unit "
1129 "not ready, manual "
1130 "intervention required\n", cp
);
1134 if (sense_key
== ABORTED_COMMAND
) {
1135 /* Aborted command is retryable */
1136 dev_warn(&h
->pdev
->dev
, "cp %p "
1137 "has check condition: aborted command: "
1138 "ASC: 0x%x, ASCQ: 0x%x\n",
1140 cmd
->result
= DID_SOFT_ERROR
<< 16;
1143 /* Must be some other type of check condition */
1144 dev_warn(&h
->pdev
->dev
, "cp %p has check condition: "
1146 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1147 "Returning result: 0x%x, "
1148 "cmd=[%02x %02x %02x %02x %02x "
1149 "%02x %02x %02x %02x %02x %02x "
1150 "%02x %02x %02x %02x %02x]\n",
1151 cp
, sense_key
, asc
, ascq
,
1153 cmd
->cmnd
[0], cmd
->cmnd
[1],
1154 cmd
->cmnd
[2], cmd
->cmnd
[3],
1155 cmd
->cmnd
[4], cmd
->cmnd
[5],
1156 cmd
->cmnd
[6], cmd
->cmnd
[7],
1157 cmd
->cmnd
[8], cmd
->cmnd
[9],
1158 cmd
->cmnd
[10], cmd
->cmnd
[11],
1159 cmd
->cmnd
[12], cmd
->cmnd
[13],
1160 cmd
->cmnd
[14], cmd
->cmnd
[15]);
1165 /* Problem was not a check condition
1166 * Pass it up to the upper layers...
1168 if (ei
->ScsiStatus
) {
1169 dev_warn(&h
->pdev
->dev
, "cp %p has status 0x%x "
1170 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1171 "Returning result: 0x%x\n",
1173 sense_key
, asc
, ascq
,
1175 } else { /* scsi status is zero??? How??? */
1176 dev_warn(&h
->pdev
->dev
, "cp %p SCSI status was 0. "
1177 "Returning no connection.\n", cp
),
1179 /* Ordinarily, this case should never happen,
1180 * but there is a bug in some released firmware
1181 * revisions that allows it to happen if, for
1182 * example, a 4100 backplane loses power and
1183 * the tape drive is in it. We assume that
1184 * it's a fatal error of some kind because we
1185 * can't show that it wasn't. We will make it
1186 * look like selection timeout since that is
1187 * the most common reason for this to occur,
1188 * and it's severe enough.
1191 cmd
->result
= DID_NO_CONNECT
<< 16;
1195 case CMD_DATA_UNDERRUN
: /* let mid layer handle it. */
1197 case CMD_DATA_OVERRUN
:
1198 dev_warn(&h
->pdev
->dev
, "cp %p has"
1199 " completed with data overrun "
1203 /* print_bytes(cp, sizeof(*cp), 1, 0);
1205 /* We get CMD_INVALID if you address a non-existent device
1206 * instead of a selection timeout (no response). You will
1207 * see this if you yank out a drive, then try to access it.
1208 * This is kind of a shame because it means that any other
1209 * CMD_INVALID (e.g. driver bug) will get interpreted as a
1210 * missing target. */
1211 cmd
->result
= DID_NO_CONNECT
<< 16;
1214 case CMD_PROTOCOL_ERR
:
1215 dev_warn(&h
->pdev
->dev
, "cp %p has "
1216 "protocol error \n", cp
);
1218 case CMD_HARDWARE_ERR
:
1219 cmd
->result
= DID_ERROR
<< 16;
1220 dev_warn(&h
->pdev
->dev
, "cp %p had hardware error\n", cp
);
1222 case CMD_CONNECTION_LOST
:
1223 cmd
->result
= DID_ERROR
<< 16;
1224 dev_warn(&h
->pdev
->dev
, "cp %p had connection lost\n", cp
);
1227 cmd
->result
= DID_ABORT
<< 16;
1228 dev_warn(&h
->pdev
->dev
, "cp %p was aborted with status 0x%x\n",
1229 cp
, ei
->ScsiStatus
);
1231 case CMD_ABORT_FAILED
:
1232 cmd
->result
= DID_ERROR
<< 16;
1233 dev_warn(&h
->pdev
->dev
, "cp %p reports abort failed\n", cp
);
1235 case CMD_UNSOLICITED_ABORT
:
1236 cmd
->result
= DID_SOFT_ERROR
<< 16; /* retry the command */
1237 dev_warn(&h
->pdev
->dev
, "cp %p aborted due to an unsolicited "
1241 cmd
->result
= DID_TIME_OUT
<< 16;
1242 dev_warn(&h
->pdev
->dev
, "cp %p timedout\n", cp
);
1244 case CMD_UNABORTABLE
:
1245 cmd
->result
= DID_ERROR
<< 16;
1246 dev_warn(&h
->pdev
->dev
, "Command unabortable\n");
1249 cmd
->result
= DID_ERROR
<< 16;
1250 dev_warn(&h
->pdev
->dev
, "cp %p returned unknown status %x\n",
1251 cp
, ei
->CommandStatus
);
1253 cmd
->scsi_done(cmd
);
1257 static int hpsa_scsi_detect(struct ctlr_info
*h
)
1259 struct Scsi_Host
*sh
;
1262 sh
= scsi_host_alloc(&hpsa_driver_template
, sizeof(h
));
1269 sh
->max_channel
= 3;
1270 sh
->max_cmd_len
= MAX_COMMAND_SIZE
;
1271 sh
->max_lun
= HPSA_MAX_LUN
;
1272 sh
->max_id
= HPSA_MAX_LUN
;
1273 sh
->can_queue
= h
->nr_cmds
;
1274 sh
->cmd_per_lun
= h
->nr_cmds
;
1275 sh
->sg_tablesize
= h
->maxsgentries
;
1277 sh
->hostdata
[0] = (unsigned long) h
;
1278 sh
->irq
= h
->intr
[h
->intr_mode
];
1279 sh
->unique_id
= sh
->irq
;
1280 error
= scsi_add_host(sh
, &h
->pdev
->dev
);
1287 dev_err(&h
->pdev
->dev
, "hpsa_scsi_detect: scsi_add_host"
1288 " failed for controller %d\n", h
->ctlr
);
1292 dev_err(&h
->pdev
->dev
, "hpsa_scsi_detect: scsi_host_alloc"
1293 " failed for controller %d\n", h
->ctlr
);
1297 static void hpsa_pci_unmap(struct pci_dev
*pdev
,
1298 struct CommandList
*c
, int sg_used
, int data_direction
)
1301 union u64bit addr64
;
1303 for (i
= 0; i
< sg_used
; i
++) {
1304 addr64
.val32
.lower
= c
->SG
[i
].Addr
.lower
;
1305 addr64
.val32
.upper
= c
->SG
[i
].Addr
.upper
;
1306 pci_unmap_single(pdev
, (dma_addr_t
) addr64
.val
, c
->SG
[i
].Len
,
1311 static void hpsa_map_one(struct pci_dev
*pdev
,
1312 struct CommandList
*cp
,
1319 if (buflen
== 0 || data_direction
== PCI_DMA_NONE
) {
1320 cp
->Header
.SGList
= 0;
1321 cp
->Header
.SGTotal
= 0;
1325 addr64
= (u64
) pci_map_single(pdev
, buf
, buflen
, data_direction
);
1326 cp
->SG
[0].Addr
.lower
=
1327 (u32
) (addr64
& (u64
) 0x00000000FFFFFFFF);
1328 cp
->SG
[0].Addr
.upper
=
1329 (u32
) ((addr64
>> 32) & (u64
) 0x00000000FFFFFFFF);
1330 cp
->SG
[0].Len
= buflen
;
1331 cp
->Header
.SGList
= (u8
) 1; /* no. SGs contig in this cmd */
1332 cp
->Header
.SGTotal
= (u16
) 1; /* total sgs in this cmd list */
1335 static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info
*h
,
1336 struct CommandList
*c
)
1338 DECLARE_COMPLETION_ONSTACK(wait
);
1341 enqueue_cmd_and_start_io(h
, c
);
1342 wait_for_completion(&wait
);
1345 static void hpsa_scsi_do_simple_cmd_core_if_no_lockup(struct ctlr_info
*h
,
1346 struct CommandList
*c
)
1348 unsigned long flags
;
1350 /* If controller lockup detected, fake a hardware error. */
1351 spin_lock_irqsave(&h
->lock
, flags
);
1352 if (unlikely(h
->lockup_detected
)) {
1353 spin_unlock_irqrestore(&h
->lock
, flags
);
1354 c
->err_info
->CommandStatus
= CMD_HARDWARE_ERR
;
1356 spin_unlock_irqrestore(&h
->lock
, flags
);
1357 hpsa_scsi_do_simple_cmd_core(h
, c
);
1361 static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info
*h
,
1362 struct CommandList
*c
, int data_direction
)
1364 int retry_count
= 0;
1367 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
1368 hpsa_scsi_do_simple_cmd_core(h
, c
);
1370 } while (check_for_unit_attention(h
, c
) && retry_count
<= 3);
1371 hpsa_pci_unmap(h
->pdev
, c
, 1, data_direction
);
1374 static void hpsa_scsi_interpret_error(struct CommandList
*cp
)
1376 struct ErrorInfo
*ei
;
1377 struct device
*d
= &cp
->h
->pdev
->dev
;
1380 switch (ei
->CommandStatus
) {
1381 case CMD_TARGET_STATUS
:
1382 dev_warn(d
, "cmd %p has completed with errors\n", cp
);
1383 dev_warn(d
, "cmd %p has SCSI Status = %x\n", cp
,
1385 if (ei
->ScsiStatus
== 0)
1386 dev_warn(d
, "SCSI status is abnormally zero. "
1387 "(probably indicates selection timeout "
1388 "reported incorrectly due to a known "
1389 "firmware bug, circa July, 2001.)\n");
1391 case CMD_DATA_UNDERRUN
: /* let mid layer handle it. */
1392 dev_info(d
, "UNDERRUN\n");
1394 case CMD_DATA_OVERRUN
:
1395 dev_warn(d
, "cp %p has completed with data overrun\n", cp
);
1398 /* controller unfortunately reports SCSI passthru's
1399 * to non-existent targets as invalid commands.
1401 dev_warn(d
, "cp %p is reported invalid (probably means "
1402 "target device no longer present)\n", cp
);
1403 /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0);
1407 case CMD_PROTOCOL_ERR
:
1408 dev_warn(d
, "cp %p has protocol error \n", cp
);
1410 case CMD_HARDWARE_ERR
:
1411 /* cmd->result = DID_ERROR << 16; */
1412 dev_warn(d
, "cp %p had hardware error\n", cp
);
1414 case CMD_CONNECTION_LOST
:
1415 dev_warn(d
, "cp %p had connection lost\n", cp
);
1418 dev_warn(d
, "cp %p was aborted\n", cp
);
1420 case CMD_ABORT_FAILED
:
1421 dev_warn(d
, "cp %p reports abort failed\n", cp
);
1423 case CMD_UNSOLICITED_ABORT
:
1424 dev_warn(d
, "cp %p aborted due to an unsolicited abort\n", cp
);
1427 dev_warn(d
, "cp %p timed out\n", cp
);
1429 case CMD_UNABORTABLE
:
1430 dev_warn(d
, "Command unabortable\n");
1433 dev_warn(d
, "cp %p returned unknown status %x\n", cp
,
1438 static int hpsa_scsi_do_inquiry(struct ctlr_info
*h
, unsigned char *scsi3addr
,
1439 unsigned char page
, unsigned char *buf
,
1440 unsigned char bufsize
)
1443 struct CommandList
*c
;
1444 struct ErrorInfo
*ei
;
1446 c
= cmd_special_alloc(h
);
1448 if (c
== NULL
) { /* trouble... */
1449 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1453 fill_cmd(c
, HPSA_INQUIRY
, h
, buf
, bufsize
, page
, scsi3addr
, TYPE_CMD
);
1454 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_FROMDEVICE
);
1456 if (ei
->CommandStatus
!= 0 && ei
->CommandStatus
!= CMD_DATA_UNDERRUN
) {
1457 hpsa_scsi_interpret_error(c
);
1460 cmd_special_free(h
, c
);
1464 static int hpsa_send_reset(struct ctlr_info
*h
, unsigned char *scsi3addr
)
1467 struct CommandList
*c
;
1468 struct ErrorInfo
*ei
;
1470 c
= cmd_special_alloc(h
);
1472 if (c
== NULL
) { /* trouble... */
1473 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1477 fill_cmd(c
, HPSA_DEVICE_RESET_MSG
, h
, NULL
, 0, 0, scsi3addr
, TYPE_MSG
);
1478 hpsa_scsi_do_simple_cmd_core(h
, c
);
1479 /* no unmap needed here because no data xfer. */
1482 if (ei
->CommandStatus
!= 0) {
1483 hpsa_scsi_interpret_error(c
);
1486 cmd_special_free(h
, c
);
1490 static void hpsa_get_raid_level(struct ctlr_info
*h
,
1491 unsigned char *scsi3addr
, unsigned char *raid_level
)
1496 *raid_level
= RAID_UNKNOWN
;
1497 buf
= kzalloc(64, GFP_KERNEL
);
1500 rc
= hpsa_scsi_do_inquiry(h
, scsi3addr
, 0xC1, buf
, 64);
1502 *raid_level
= buf
[8];
1503 if (*raid_level
> RAID_UNKNOWN
)
1504 *raid_level
= RAID_UNKNOWN
;
1509 /* Get the device id from inquiry page 0x83 */
1510 static int hpsa_get_device_id(struct ctlr_info
*h
, unsigned char *scsi3addr
,
1511 unsigned char *device_id
, int buflen
)
1518 buf
= kzalloc(64, GFP_KERNEL
);
1521 rc
= hpsa_scsi_do_inquiry(h
, scsi3addr
, 0x83, buf
, 64);
1523 memcpy(device_id
, &buf
[8], buflen
);
1528 static int hpsa_scsi_do_report_luns(struct ctlr_info
*h
, int logical
,
1529 struct ReportLUNdata
*buf
, int bufsize
,
1530 int extended_response
)
1533 struct CommandList
*c
;
1534 unsigned char scsi3addr
[8];
1535 struct ErrorInfo
*ei
;
1537 c
= cmd_special_alloc(h
);
1538 if (c
== NULL
) { /* trouble... */
1539 dev_err(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1542 /* address the controller */
1543 memset(scsi3addr
, 0, sizeof(scsi3addr
));
1544 fill_cmd(c
, logical
? HPSA_REPORT_LOG
: HPSA_REPORT_PHYS
, h
,
1545 buf
, bufsize
, 0, scsi3addr
, TYPE_CMD
);
1546 if (extended_response
)
1547 c
->Request
.CDB
[1] = extended_response
;
1548 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_FROMDEVICE
);
1550 if (ei
->CommandStatus
!= 0 &&
1551 ei
->CommandStatus
!= CMD_DATA_UNDERRUN
) {
1552 hpsa_scsi_interpret_error(c
);
1555 cmd_special_free(h
, c
);
1559 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info
*h
,
1560 struct ReportLUNdata
*buf
,
1561 int bufsize
, int extended_response
)
1563 return hpsa_scsi_do_report_luns(h
, 0, buf
, bufsize
, extended_response
);
1566 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info
*h
,
1567 struct ReportLUNdata
*buf
, int bufsize
)
1569 return hpsa_scsi_do_report_luns(h
, 1, buf
, bufsize
, 0);
1572 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t
*device
,
1573 int bus
, int target
, int lun
)
1576 device
->target
= target
;
1580 static int hpsa_update_device_info(struct ctlr_info
*h
,
1581 unsigned char scsi3addr
[], struct hpsa_scsi_dev_t
*this_device
,
1582 unsigned char *is_OBDR_device
)
1585 #define OBDR_SIG_OFFSET 43
1586 #define OBDR_TAPE_SIG "$DR-10"
1587 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
1588 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
1590 unsigned char *inq_buff
;
1591 unsigned char *obdr_sig
;
1593 inq_buff
= kzalloc(OBDR_TAPE_INQ_SIZE
, GFP_KERNEL
);
1597 /* Do an inquiry to the device to see what it is. */
1598 if (hpsa_scsi_do_inquiry(h
, scsi3addr
, 0, inq_buff
,
1599 (unsigned char) OBDR_TAPE_INQ_SIZE
) != 0) {
1600 /* Inquiry failed (msg printed already) */
1601 dev_err(&h
->pdev
->dev
,
1602 "hpsa_update_device_info: inquiry failed\n");
1606 this_device
->devtype
= (inq_buff
[0] & 0x1f);
1607 memcpy(this_device
->scsi3addr
, scsi3addr
, 8);
1608 memcpy(this_device
->vendor
, &inq_buff
[8],
1609 sizeof(this_device
->vendor
));
1610 memcpy(this_device
->model
, &inq_buff
[16],
1611 sizeof(this_device
->model
));
1612 memset(this_device
->device_id
, 0,
1613 sizeof(this_device
->device_id
));
1614 hpsa_get_device_id(h
, scsi3addr
, this_device
->device_id
,
1615 sizeof(this_device
->device_id
));
1617 if (this_device
->devtype
== TYPE_DISK
&&
1618 is_logical_dev_addr_mode(scsi3addr
))
1619 hpsa_get_raid_level(h
, scsi3addr
, &this_device
->raid_level
);
1621 this_device
->raid_level
= RAID_UNKNOWN
;
1623 if (is_OBDR_device
) {
1624 /* See if this is a One-Button-Disaster-Recovery device
1625 * by looking for "$DR-10" at offset 43 in inquiry data.
1627 obdr_sig
= &inq_buff
[OBDR_SIG_OFFSET
];
1628 *is_OBDR_device
= (this_device
->devtype
== TYPE_ROM
&&
1629 strncmp(obdr_sig
, OBDR_TAPE_SIG
,
1630 OBDR_SIG_LEN
) == 0);
1641 static unsigned char *msa2xxx_model
[] = {
1650 static int is_msa2xxx(struct ctlr_info
*h
, struct hpsa_scsi_dev_t
*device
)
1654 for (i
= 0; msa2xxx_model
[i
]; i
++)
1655 if (strncmp(device
->model
, msa2xxx_model
[i
],
1656 strlen(msa2xxx_model
[i
])) == 0)
1661 /* Helper function to assign bus, target, lun mapping of devices.
1662 * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical
1663 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
1664 * Logical drive target and lun are assigned at this time, but
1665 * physical device lun and target assignment are deferred (assigned
1666 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
1668 static void figure_bus_target_lun(struct ctlr_info
*h
,
1669 u8
*lunaddrbytes
, int *bus
, int *target
, int *lun
,
1670 struct hpsa_scsi_dev_t
*device
)
1674 if (is_logical_dev_addr_mode(lunaddrbytes
)) {
1675 /* logical device */
1676 if (unlikely(is_scsi_rev_5(h
))) {
1677 /* p1210m, logical drives lun assignments
1678 * match SCSI REPORT LUNS data.
1680 lunid
= le32_to_cpu(*((__le32
*) lunaddrbytes
));
1683 *lun
= (lunid
& 0x3fff) + 1;
1686 lunid
= le32_to_cpu(*((__le32
*) lunaddrbytes
));
1687 if (is_msa2xxx(h
, device
)) {
1688 /* msa2xxx way, put logicals on bus 1
1689 * and match target/lun numbers box
1693 *target
= (lunid
>> 16) & 0x3fff;
1694 *lun
= lunid
& 0x00ff;
1696 /* Traditional smart array way. */
1699 *target
= lunid
& 0x3fff;
1703 /* physical device */
1704 if (is_hba_lunid(lunaddrbytes
))
1705 if (unlikely(is_scsi_rev_5(h
))) {
1706 *bus
= 0; /* put p1210m ctlr at 0,0,0 */
1711 *bus
= 3; /* traditional smartarray */
1713 *bus
= 2; /* physical disk */
1715 *lun
= -1; /* we will fill these in later. */
1720 * If there is no lun 0 on a target, linux won't find any devices.
1721 * For the MSA2xxx boxes, we have to manually detect the enclosure
1722 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
1723 * it for some reason. *tmpdevice is the target we're adding,
1724 * this_device is a pointer into the current element of currentsd[]
1725 * that we're building up in update_scsi_devices(), below.
1726 * lunzerobits is a bitmap that tracks which targets already have a
1728 * Returns 1 if an enclosure was added, 0 if not.
1730 static int add_msa2xxx_enclosure_device(struct ctlr_info
*h
,
1731 struct hpsa_scsi_dev_t
*tmpdevice
,
1732 struct hpsa_scsi_dev_t
*this_device
, u8
*lunaddrbytes
,
1733 int bus
, int target
, int lun
, unsigned long lunzerobits
[],
1734 int *nmsa2xxx_enclosures
)
1736 unsigned char scsi3addr
[8];
1738 if (test_bit(target
, lunzerobits
))
1739 return 0; /* There is already a lun 0 on this target. */
1741 if (!is_logical_dev_addr_mode(lunaddrbytes
))
1742 return 0; /* It's the logical targets that may lack lun 0. */
1744 if (!is_msa2xxx(h
, tmpdevice
))
1745 return 0; /* It's only the MSA2xxx that have this problem. */
1747 if (lun
== 0) /* if lun is 0, then obviously we have a lun 0. */
1750 memset(scsi3addr
, 0, 8);
1751 scsi3addr
[3] = target
;
1752 if (is_hba_lunid(scsi3addr
))
1753 return 0; /* Don't add the RAID controller here. */
1755 if (is_scsi_rev_5(h
))
1756 return 0; /* p1210m doesn't need to do this. */
1758 if (*nmsa2xxx_enclosures
>= MAX_MSA2XXX_ENCLOSURES
) {
1759 dev_warn(&h
->pdev
->dev
, "Maximum number of MSA2XXX "
1760 "enclosures exceeded. Check your hardware "
1765 if (hpsa_update_device_info(h
, scsi3addr
, this_device
, NULL
))
1767 (*nmsa2xxx_enclosures
)++;
1768 hpsa_set_bus_target_lun(this_device
, bus
, target
, 0);
1769 set_bit(target
, lunzerobits
);
1774 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
1775 * logdev. The number of luns in physdev and logdev are returned in
1776 * *nphysicals and *nlogicals, respectively.
1777 * Returns 0 on success, -1 otherwise.
1779 static int hpsa_gather_lun_info(struct ctlr_info
*h
,
1781 struct ReportLUNdata
*physdev
, u32
*nphysicals
,
1782 struct ReportLUNdata
*logdev
, u32
*nlogicals
)
1784 if (hpsa_scsi_do_report_phys_luns(h
, physdev
, reportlunsize
, 0)) {
1785 dev_err(&h
->pdev
->dev
, "report physical LUNs failed.\n");
1788 *nphysicals
= be32_to_cpu(*((__be32
*)physdev
->LUNListLength
)) / 8;
1789 if (*nphysicals
> HPSA_MAX_PHYS_LUN
) {
1790 dev_warn(&h
->pdev
->dev
, "maximum physical LUNs (%d) exceeded."
1791 " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN
,
1792 *nphysicals
- HPSA_MAX_PHYS_LUN
);
1793 *nphysicals
= HPSA_MAX_PHYS_LUN
;
1795 if (hpsa_scsi_do_report_log_luns(h
, logdev
, reportlunsize
)) {
1796 dev_err(&h
->pdev
->dev
, "report logical LUNs failed.\n");
1799 *nlogicals
= be32_to_cpu(*((__be32
*) logdev
->LUNListLength
)) / 8;
1800 /* Reject Logicals in excess of our max capability. */
1801 if (*nlogicals
> HPSA_MAX_LUN
) {
1802 dev_warn(&h
->pdev
->dev
,
1803 "maximum logical LUNs (%d) exceeded. "
1804 "%d LUNs ignored.\n", HPSA_MAX_LUN
,
1805 *nlogicals
- HPSA_MAX_LUN
);
1806 *nlogicals
= HPSA_MAX_LUN
;
1808 if (*nlogicals
+ *nphysicals
> HPSA_MAX_PHYS_LUN
) {
1809 dev_warn(&h
->pdev
->dev
,
1810 "maximum logical + physical LUNs (%d) exceeded. "
1811 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN
,
1812 *nphysicals
+ *nlogicals
- HPSA_MAX_PHYS_LUN
);
1813 *nlogicals
= HPSA_MAX_PHYS_LUN
- *nphysicals
;
1818 u8
*figure_lunaddrbytes(struct ctlr_info
*h
, int raid_ctlr_position
, int i
,
1819 int nphysicals
, int nlogicals
, struct ReportLUNdata
*physdev_list
,
1820 struct ReportLUNdata
*logdev_list
)
1822 /* Helper function, figure out where the LUN ID info is coming from
1823 * given index i, lists of physical and logical devices, where in
1824 * the list the raid controller is supposed to appear (first or last)
1827 int logicals_start
= nphysicals
+ (raid_ctlr_position
== 0);
1828 int last_device
= nphysicals
+ nlogicals
+ (raid_ctlr_position
== 0);
1830 if (i
== raid_ctlr_position
)
1831 return RAID_CTLR_LUNID
;
1833 if (i
< logicals_start
)
1834 return &physdev_list
->LUN
[i
- (raid_ctlr_position
== 0)][0];
1836 if (i
< last_device
)
1837 return &logdev_list
->LUN
[i
- nphysicals
-
1838 (raid_ctlr_position
== 0)][0];
1843 static void hpsa_update_scsi_devices(struct ctlr_info
*h
, int hostno
)
1845 /* the idea here is we could get notified
1846 * that some devices have changed, so we do a report
1847 * physical luns and report logical luns cmd, and adjust
1848 * our list of devices accordingly.
1850 * The scsi3addr's of devices won't change so long as the
1851 * adapter is not reset. That means we can rescan and
1852 * tell which devices we already know about, vs. new
1853 * devices, vs. disappearing devices.
1855 struct ReportLUNdata
*physdev_list
= NULL
;
1856 struct ReportLUNdata
*logdev_list
= NULL
;
1859 u32 ndev_allocated
= 0;
1860 struct hpsa_scsi_dev_t
**currentsd
, *this_device
, *tmpdevice
;
1862 int reportlunsize
= sizeof(*physdev_list
) + HPSA_MAX_PHYS_LUN
* 8;
1863 int i
, nmsa2xxx_enclosures
, ndevs_to_allocate
;
1864 int bus
, target
, lun
;
1865 int raid_ctlr_position
;
1866 DECLARE_BITMAP(lunzerobits
, HPSA_MAX_TARGETS_PER_CTLR
);
1868 currentsd
= kzalloc(sizeof(*currentsd
) * HPSA_MAX_DEVICES
, GFP_KERNEL
);
1869 physdev_list
= kzalloc(reportlunsize
, GFP_KERNEL
);
1870 logdev_list
= kzalloc(reportlunsize
, GFP_KERNEL
);
1871 tmpdevice
= kzalloc(sizeof(*tmpdevice
), GFP_KERNEL
);
1873 if (!currentsd
|| !physdev_list
|| !logdev_list
|| !tmpdevice
) {
1874 dev_err(&h
->pdev
->dev
, "out of memory\n");
1877 memset(lunzerobits
, 0, sizeof(lunzerobits
));
1879 if (hpsa_gather_lun_info(h
, reportlunsize
, physdev_list
, &nphysicals
,
1880 logdev_list
, &nlogicals
))
1883 /* We might see up to 32 MSA2xxx enclosures, actually 8 of them
1884 * but each of them 4 times through different paths. The plus 1
1885 * is for the RAID controller.
1887 ndevs_to_allocate
= nphysicals
+ nlogicals
+ MAX_MSA2XXX_ENCLOSURES
+ 1;
1889 /* Allocate the per device structures */
1890 for (i
= 0; i
< ndevs_to_allocate
; i
++) {
1891 if (i
>= HPSA_MAX_DEVICES
) {
1892 dev_warn(&h
->pdev
->dev
, "maximum devices (%d) exceeded."
1893 " %d devices ignored.\n", HPSA_MAX_DEVICES
,
1894 ndevs_to_allocate
- HPSA_MAX_DEVICES
);
1898 currentsd
[i
] = kzalloc(sizeof(*currentsd
[i
]), GFP_KERNEL
);
1899 if (!currentsd
[i
]) {
1900 dev_warn(&h
->pdev
->dev
, "out of memory at %s:%d\n",
1901 __FILE__
, __LINE__
);
1907 if (unlikely(is_scsi_rev_5(h
)))
1908 raid_ctlr_position
= 0;
1910 raid_ctlr_position
= nphysicals
+ nlogicals
;
1912 /* adjust our table of devices */
1913 nmsa2xxx_enclosures
= 0;
1914 for (i
= 0; i
< nphysicals
+ nlogicals
+ 1; i
++) {
1915 u8
*lunaddrbytes
, is_OBDR
= 0;
1917 /* Figure out where the LUN ID info is coming from */
1918 lunaddrbytes
= figure_lunaddrbytes(h
, raid_ctlr_position
,
1919 i
, nphysicals
, nlogicals
, physdev_list
, logdev_list
);
1920 /* skip masked physical devices. */
1921 if (lunaddrbytes
[3] & 0xC0 &&
1922 i
< nphysicals
+ (raid_ctlr_position
== 0))
1925 /* Get device type, vendor, model, device id */
1926 if (hpsa_update_device_info(h
, lunaddrbytes
, tmpdevice
,
1928 continue; /* skip it if we can't talk to it. */
1929 figure_bus_target_lun(h
, lunaddrbytes
, &bus
, &target
, &lun
,
1931 this_device
= currentsd
[ncurrent
];
1934 * For the msa2xxx boxes, we have to insert a LUN 0 which
1935 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
1936 * is nonetheless an enclosure device there. We have to
1937 * present that otherwise linux won't find anything if
1938 * there is no lun 0.
1940 if (add_msa2xxx_enclosure_device(h
, tmpdevice
, this_device
,
1941 lunaddrbytes
, bus
, target
, lun
, lunzerobits
,
1942 &nmsa2xxx_enclosures
)) {
1944 this_device
= currentsd
[ncurrent
];
1947 *this_device
= *tmpdevice
;
1948 hpsa_set_bus_target_lun(this_device
, bus
, target
, lun
);
1950 switch (this_device
->devtype
) {
1952 /* We don't *really* support actual CD-ROM devices,
1953 * just "One Button Disaster Recovery" tape drive
1954 * which temporarily pretends to be a CD-ROM drive.
1955 * So we check that the device is really an OBDR tape
1956 * device by checking for "$DR-10" in bytes 43-48 of
1968 case TYPE_MEDIUM_CHANGER
:
1972 /* Only present the Smartarray HBA as a RAID controller.
1973 * If it's a RAID controller other than the HBA itself
1974 * (an external RAID controller, MSA500 or similar)
1977 if (!is_hba_lunid(lunaddrbytes
))
1984 if (ncurrent
>= HPSA_MAX_DEVICES
)
1987 adjust_hpsa_scsi_table(h
, hostno
, currentsd
, ncurrent
);
1990 for (i
= 0; i
< ndev_allocated
; i
++)
1991 kfree(currentsd
[i
]);
1993 kfree(physdev_list
);
1997 /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
1998 * dma mapping and fills in the scatter gather entries of the
2001 static int hpsa_scatter_gather(struct ctlr_info
*h
,
2002 struct CommandList
*cp
,
2003 struct scsi_cmnd
*cmd
)
2006 struct scatterlist
*sg
;
2008 int use_sg
, i
, sg_index
, chained
;
2009 struct SGDescriptor
*curr_sg
;
2011 BUG_ON(scsi_sg_count(cmd
) > h
->maxsgentries
);
2013 use_sg
= scsi_dma_map(cmd
);
2018 goto sglist_finished
;
2023 scsi_for_each_sg(cmd
, sg
, use_sg
, i
) {
2024 if (i
== h
->max_cmd_sg_entries
- 1 &&
2025 use_sg
> h
->max_cmd_sg_entries
) {
2027 curr_sg
= h
->cmd_sg_list
[cp
->cmdindex
];
2030 addr64
= (u64
) sg_dma_address(sg
);
2031 len
= sg_dma_len(sg
);
2032 curr_sg
->Addr
.lower
= (u32
) (addr64
& 0x0FFFFFFFFULL
);
2033 curr_sg
->Addr
.upper
= (u32
) ((addr64
>> 32) & 0x0FFFFFFFFULL
);
2035 curr_sg
->Ext
= 0; /* we are not chaining */
2039 if (use_sg
+ chained
> h
->maxSG
)
2040 h
->maxSG
= use_sg
+ chained
;
2043 cp
->Header
.SGList
= h
->max_cmd_sg_entries
;
2044 cp
->Header
.SGTotal
= (u16
) (use_sg
+ 1);
2045 hpsa_map_sg_chain_block(h
, cp
);
2051 cp
->Header
.SGList
= (u8
) use_sg
; /* no. SGs contig in this cmd */
2052 cp
->Header
.SGTotal
= (u16
) use_sg
; /* total sgs in this cmd list */
2057 static int hpsa_scsi_queue_command_lck(struct scsi_cmnd
*cmd
,
2058 void (*done
)(struct scsi_cmnd
*))
2060 struct ctlr_info
*h
;
2061 struct hpsa_scsi_dev_t
*dev
;
2062 unsigned char scsi3addr
[8];
2063 struct CommandList
*c
;
2064 unsigned long flags
;
2066 /* Get the ptr to our adapter structure out of cmd->host. */
2067 h
= sdev_to_hba(cmd
->device
);
2068 dev
= cmd
->device
->hostdata
;
2070 cmd
->result
= DID_NO_CONNECT
<< 16;
2074 memcpy(scsi3addr
, dev
->scsi3addr
, sizeof(scsi3addr
));
2076 spin_lock_irqsave(&h
->lock
, flags
);
2077 if (unlikely(h
->lockup_detected
)) {
2078 spin_unlock_irqrestore(&h
->lock
, flags
);
2079 cmd
->result
= DID_ERROR
<< 16;
2083 /* Need a lock as this is being allocated from the pool */
2085 spin_unlock_irqrestore(&h
->lock
, flags
);
2086 if (c
== NULL
) { /* trouble... */
2087 dev_err(&h
->pdev
->dev
, "cmd_alloc returned NULL!\n");
2088 return SCSI_MLQUEUE_HOST_BUSY
;
2091 /* Fill in the command list header */
2093 cmd
->scsi_done
= done
; /* save this for use by completion code */
2095 /* save c in case we have to abort it */
2096 cmd
->host_scribble
= (unsigned char *) c
;
2098 c
->cmd_type
= CMD_SCSI
;
2100 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
2101 memcpy(&c
->Header
.LUN
.LunAddrBytes
[0], &scsi3addr
[0], 8);
2102 c
->Header
.Tag
.lower
= (c
->cmdindex
<< DIRECT_LOOKUP_SHIFT
);
2103 c
->Header
.Tag
.lower
|= DIRECT_LOOKUP_BIT
;
2105 /* Fill in the request block... */
2107 c
->Request
.Timeout
= 0;
2108 memset(c
->Request
.CDB
, 0, sizeof(c
->Request
.CDB
));
2109 BUG_ON(cmd
->cmd_len
> sizeof(c
->Request
.CDB
));
2110 c
->Request
.CDBLen
= cmd
->cmd_len
;
2111 memcpy(c
->Request
.CDB
, cmd
->cmnd
, cmd
->cmd_len
);
2112 c
->Request
.Type
.Type
= TYPE_CMD
;
2113 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2114 switch (cmd
->sc_data_direction
) {
2116 c
->Request
.Type
.Direction
= XFER_WRITE
;
2118 case DMA_FROM_DEVICE
:
2119 c
->Request
.Type
.Direction
= XFER_READ
;
2122 c
->Request
.Type
.Direction
= XFER_NONE
;
2124 case DMA_BIDIRECTIONAL
:
2125 /* This can happen if a buggy application does a scsi passthru
2126 * and sets both inlen and outlen to non-zero. ( see
2127 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
2130 c
->Request
.Type
.Direction
= XFER_RSVD
;
2131 /* This is technically wrong, and hpsa controllers should
2132 * reject it with CMD_INVALID, which is the most correct
2133 * response, but non-fibre backends appear to let it
2134 * slide by, and give the same results as if this field
2135 * were set correctly. Either way is acceptable for
2136 * our purposes here.
2142 dev_err(&h
->pdev
->dev
, "unknown data direction: %d\n",
2143 cmd
->sc_data_direction
);
2148 if (hpsa_scatter_gather(h
, c
, cmd
) < 0) { /* Fill SG list */
2150 return SCSI_MLQUEUE_HOST_BUSY
;
2152 enqueue_cmd_and_start_io(h
, c
);
2153 /* the cmd'll come back via intr handler in complete_scsi_command() */
2157 static DEF_SCSI_QCMD(hpsa_scsi_queue_command
)
2159 static void hpsa_scan_start(struct Scsi_Host
*sh
)
2161 struct ctlr_info
*h
= shost_to_hba(sh
);
2162 unsigned long flags
;
2164 /* wait until any scan already in progress is finished. */
2166 spin_lock_irqsave(&h
->scan_lock
, flags
);
2167 if (h
->scan_finished
)
2169 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2170 wait_event(h
->scan_wait_queue
, h
->scan_finished
);
2171 /* Note: We don't need to worry about a race between this
2172 * thread and driver unload because the midlayer will
2173 * have incremented the reference count, so unload won't
2174 * happen if we're in here.
2177 h
->scan_finished
= 0; /* mark scan as in progress */
2178 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2180 hpsa_update_scsi_devices(h
, h
->scsi_host
->host_no
);
2182 spin_lock_irqsave(&h
->scan_lock
, flags
);
2183 h
->scan_finished
= 1; /* mark scan as finished. */
2184 wake_up_all(&h
->scan_wait_queue
);
2185 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2188 static int hpsa_scan_finished(struct Scsi_Host
*sh
,
2189 unsigned long elapsed_time
)
2191 struct ctlr_info
*h
= shost_to_hba(sh
);
2192 unsigned long flags
;
2195 spin_lock_irqsave(&h
->scan_lock
, flags
);
2196 finished
= h
->scan_finished
;
2197 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2201 static int hpsa_change_queue_depth(struct scsi_device
*sdev
,
2202 int qdepth
, int reason
)
2204 struct ctlr_info
*h
= sdev_to_hba(sdev
);
2206 if (reason
!= SCSI_QDEPTH_DEFAULT
)
2212 if (qdepth
> h
->nr_cmds
)
2213 qdepth
= h
->nr_cmds
;
2214 scsi_adjust_queue_depth(sdev
, scsi_get_tag_type(sdev
), qdepth
);
2215 return sdev
->queue_depth
;
2218 static void hpsa_unregister_scsi(struct ctlr_info
*h
)
2220 /* we are being forcibly unloaded, and may not refuse. */
2221 scsi_remove_host(h
->scsi_host
);
2222 scsi_host_put(h
->scsi_host
);
2223 h
->scsi_host
= NULL
;
2226 static int hpsa_register_scsi(struct ctlr_info
*h
)
2230 rc
= hpsa_scsi_detect(h
);
2232 dev_err(&h
->pdev
->dev
, "hpsa_register_scsi: failed"
2233 " hpsa_scsi_detect(), rc is %d\n", rc
);
2237 static int wait_for_device_to_become_ready(struct ctlr_info
*h
,
2238 unsigned char lunaddr
[])
2242 int waittime
= 1; /* seconds */
2243 struct CommandList
*c
;
2245 c
= cmd_special_alloc(h
);
2247 dev_warn(&h
->pdev
->dev
, "out of memory in "
2248 "wait_for_device_to_become_ready.\n");
2252 /* Send test unit ready until device ready, or give up. */
2253 while (count
< HPSA_TUR_RETRY_LIMIT
) {
2255 /* Wait for a bit. do this first, because if we send
2256 * the TUR right away, the reset will just abort it.
2258 msleep(1000 * waittime
);
2261 /* Increase wait time with each try, up to a point. */
2262 if (waittime
< HPSA_MAX_WAIT_INTERVAL_SECS
)
2263 waittime
= waittime
* 2;
2265 /* Send the Test Unit Ready */
2266 fill_cmd(c
, TEST_UNIT_READY
, h
, NULL
, 0, 0, lunaddr
, TYPE_CMD
);
2267 hpsa_scsi_do_simple_cmd_core(h
, c
);
2268 /* no unmap needed here because no data xfer. */
2270 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2273 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
2274 c
->err_info
->ScsiStatus
== SAM_STAT_CHECK_CONDITION
&&
2275 (c
->err_info
->SenseInfo
[2] == NO_SENSE
||
2276 c
->err_info
->SenseInfo
[2] == UNIT_ATTENTION
))
2279 dev_warn(&h
->pdev
->dev
, "waiting %d secs "
2280 "for device to become ready.\n", waittime
);
2281 rc
= 1; /* device not ready. */
2285 dev_warn(&h
->pdev
->dev
, "giving up on device.\n");
2287 dev_warn(&h
->pdev
->dev
, "device is ready.\n");
2289 cmd_special_free(h
, c
);
2293 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
2294 * complaining. Doing a host- or bus-reset can't do anything good here.
2296 static int hpsa_eh_device_reset_handler(struct scsi_cmnd
*scsicmd
)
2299 struct ctlr_info
*h
;
2300 struct hpsa_scsi_dev_t
*dev
;
2302 /* find the controller to which the command to be aborted was sent */
2303 h
= sdev_to_hba(scsicmd
->device
);
2304 if (h
== NULL
) /* paranoia */
2306 dev
= scsicmd
->device
->hostdata
;
2308 dev_err(&h
->pdev
->dev
, "hpsa_eh_device_reset_handler: "
2309 "device lookup failed.\n");
2312 dev_warn(&h
->pdev
->dev
, "resetting device %d:%d:%d:%d\n",
2313 h
->scsi_host
->host_no
, dev
->bus
, dev
->target
, dev
->lun
);
2314 /* send a reset to the SCSI LUN which the command was sent to */
2315 rc
= hpsa_send_reset(h
, dev
->scsi3addr
);
2316 if (rc
== 0 && wait_for_device_to_become_ready(h
, dev
->scsi3addr
) == 0)
2319 dev_warn(&h
->pdev
->dev
, "resetting device failed.\n");
2324 * For operations that cannot sleep, a command block is allocated at init,
2325 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
2326 * which ones are free or in use. Lock must be held when calling this.
2327 * cmd_free() is the complement.
2329 static struct CommandList
*cmd_alloc(struct ctlr_info
*h
)
2331 struct CommandList
*c
;
2333 union u64bit temp64
;
2334 dma_addr_t cmd_dma_handle
, err_dma_handle
;
2337 i
= find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
);
2338 if (i
== h
->nr_cmds
)
2340 } while (test_and_set_bit
2341 (i
& (BITS_PER_LONG
- 1),
2342 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
)) != 0);
2343 c
= h
->cmd_pool
+ i
;
2344 memset(c
, 0, sizeof(*c
));
2345 cmd_dma_handle
= h
->cmd_pool_dhandle
2347 c
->err_info
= h
->errinfo_pool
+ i
;
2348 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
2349 err_dma_handle
= h
->errinfo_pool_dhandle
2350 + i
* sizeof(*c
->err_info
);
2355 INIT_LIST_HEAD(&c
->list
);
2356 c
->busaddr
= (u32
) cmd_dma_handle
;
2357 temp64
.val
= (u64
) err_dma_handle
;
2358 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
2359 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
2360 c
->ErrDesc
.Len
= sizeof(*c
->err_info
);
2366 /* For operations that can wait for kmalloc to possibly sleep,
2367 * this routine can be called. Lock need not be held to call
2368 * cmd_special_alloc. cmd_special_free() is the complement.
2370 static struct CommandList
*cmd_special_alloc(struct ctlr_info
*h
)
2372 struct CommandList
*c
;
2373 union u64bit temp64
;
2374 dma_addr_t cmd_dma_handle
, err_dma_handle
;
2376 c
= pci_alloc_consistent(h
->pdev
, sizeof(*c
), &cmd_dma_handle
);
2379 memset(c
, 0, sizeof(*c
));
2383 c
->err_info
= pci_alloc_consistent(h
->pdev
, sizeof(*c
->err_info
),
2386 if (c
->err_info
== NULL
) {
2387 pci_free_consistent(h
->pdev
,
2388 sizeof(*c
), c
, cmd_dma_handle
);
2391 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
2393 INIT_LIST_HEAD(&c
->list
);
2394 c
->busaddr
= (u32
) cmd_dma_handle
;
2395 temp64
.val
= (u64
) err_dma_handle
;
2396 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
2397 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
2398 c
->ErrDesc
.Len
= sizeof(*c
->err_info
);
2404 static void cmd_free(struct ctlr_info
*h
, struct CommandList
*c
)
2408 i
= c
- h
->cmd_pool
;
2409 clear_bit(i
& (BITS_PER_LONG
- 1),
2410 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
));
2414 static void cmd_special_free(struct ctlr_info
*h
, struct CommandList
*c
)
2416 union u64bit temp64
;
2418 temp64
.val32
.lower
= c
->ErrDesc
.Addr
.lower
;
2419 temp64
.val32
.upper
= c
->ErrDesc
.Addr
.upper
;
2420 pci_free_consistent(h
->pdev
, sizeof(*c
->err_info
),
2421 c
->err_info
, (dma_addr_t
) temp64
.val
);
2422 pci_free_consistent(h
->pdev
, sizeof(*c
),
2423 c
, (dma_addr_t
) (c
->busaddr
& DIRECT_LOOKUP_MASK
));
2426 #ifdef CONFIG_COMPAT
2428 static int hpsa_ioctl32_passthru(struct scsi_device
*dev
, int cmd
, void *arg
)
2430 IOCTL32_Command_struct __user
*arg32
=
2431 (IOCTL32_Command_struct __user
*) arg
;
2432 IOCTL_Command_struct arg64
;
2433 IOCTL_Command_struct __user
*p
= compat_alloc_user_space(sizeof(arg64
));
2437 memset(&arg64
, 0, sizeof(arg64
));
2439 err
|= copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
2440 sizeof(arg64
.LUN_info
));
2441 err
|= copy_from_user(&arg64
.Request
, &arg32
->Request
,
2442 sizeof(arg64
.Request
));
2443 err
|= copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
2444 sizeof(arg64
.error_info
));
2445 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
2446 err
|= get_user(cp
, &arg32
->buf
);
2447 arg64
.buf
= compat_ptr(cp
);
2448 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
2453 err
= hpsa_ioctl(dev
, CCISS_PASSTHRU
, (void *)p
);
2456 err
|= copy_in_user(&arg32
->error_info
, &p
->error_info
,
2457 sizeof(arg32
->error_info
));
2463 static int hpsa_ioctl32_big_passthru(struct scsi_device
*dev
,
2466 BIG_IOCTL32_Command_struct __user
*arg32
=
2467 (BIG_IOCTL32_Command_struct __user
*) arg
;
2468 BIG_IOCTL_Command_struct arg64
;
2469 BIG_IOCTL_Command_struct __user
*p
=
2470 compat_alloc_user_space(sizeof(arg64
));
2474 memset(&arg64
, 0, sizeof(arg64
));
2476 err
|= copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
2477 sizeof(arg64
.LUN_info
));
2478 err
|= copy_from_user(&arg64
.Request
, &arg32
->Request
,
2479 sizeof(arg64
.Request
));
2480 err
|= copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
2481 sizeof(arg64
.error_info
));
2482 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
2483 err
|= get_user(arg64
.malloc_size
, &arg32
->malloc_size
);
2484 err
|= get_user(cp
, &arg32
->buf
);
2485 arg64
.buf
= compat_ptr(cp
);
2486 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
2491 err
= hpsa_ioctl(dev
, CCISS_BIG_PASSTHRU
, (void *)p
);
2494 err
|= copy_in_user(&arg32
->error_info
, &p
->error_info
,
2495 sizeof(arg32
->error_info
));
2501 static int hpsa_compat_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
)
2504 case CCISS_GETPCIINFO
:
2505 case CCISS_GETINTINFO
:
2506 case CCISS_SETINTINFO
:
2507 case CCISS_GETNODENAME
:
2508 case CCISS_SETNODENAME
:
2509 case CCISS_GETHEARTBEAT
:
2510 case CCISS_GETBUSTYPES
:
2511 case CCISS_GETFIRMVER
:
2512 case CCISS_GETDRIVVER
:
2513 case CCISS_REVALIDVOLS
:
2514 case CCISS_DEREGDISK
:
2515 case CCISS_REGNEWDISK
:
2517 case CCISS_RESCANDISK
:
2518 case CCISS_GETLUNINFO
:
2519 return hpsa_ioctl(dev
, cmd
, arg
);
2521 case CCISS_PASSTHRU32
:
2522 return hpsa_ioctl32_passthru(dev
, cmd
, arg
);
2523 case CCISS_BIG_PASSTHRU32
:
2524 return hpsa_ioctl32_big_passthru(dev
, cmd
, arg
);
2527 return -ENOIOCTLCMD
;
2532 static int hpsa_getpciinfo_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2534 struct hpsa_pci_info pciinfo
;
2538 pciinfo
.domain
= pci_domain_nr(h
->pdev
->bus
);
2539 pciinfo
.bus
= h
->pdev
->bus
->number
;
2540 pciinfo
.dev_fn
= h
->pdev
->devfn
;
2541 pciinfo
.board_id
= h
->board_id
;
2542 if (copy_to_user(argp
, &pciinfo
, sizeof(pciinfo
)))
2547 static int hpsa_getdrivver_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2549 DriverVer_type DriverVer
;
2550 unsigned char vmaj
, vmin
, vsubmin
;
2553 rc
= sscanf(HPSA_DRIVER_VERSION
, "%hhu.%hhu.%hhu",
2554 &vmaj
, &vmin
, &vsubmin
);
2556 dev_info(&h
->pdev
->dev
, "driver version string '%s' "
2557 "unrecognized.", HPSA_DRIVER_VERSION
);
2562 DriverVer
= (vmaj
<< 16) | (vmin
<< 8) | vsubmin
;
2565 if (copy_to_user(argp
, &DriverVer
, sizeof(DriverVer_type
)))
2570 static int hpsa_passthru_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2572 IOCTL_Command_struct iocommand
;
2573 struct CommandList
*c
;
2575 union u64bit temp64
;
2579 if (!capable(CAP_SYS_RAWIO
))
2581 if (copy_from_user(&iocommand
, argp
, sizeof(iocommand
)))
2583 if ((iocommand
.buf_size
< 1) &&
2584 (iocommand
.Request
.Type
.Direction
!= XFER_NONE
)) {
2587 if (iocommand
.buf_size
> 0) {
2588 buff
= kmalloc(iocommand
.buf_size
, GFP_KERNEL
);
2591 if (iocommand
.Request
.Type
.Direction
== XFER_WRITE
) {
2592 /* Copy the data into the buffer we created */
2593 if (copy_from_user(buff
, iocommand
.buf
,
2594 iocommand
.buf_size
)) {
2599 memset(buff
, 0, iocommand
.buf_size
);
2602 c
= cmd_special_alloc(h
);
2607 /* Fill in the command type */
2608 c
->cmd_type
= CMD_IOCTL_PEND
;
2609 /* Fill in Command Header */
2610 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
2611 if (iocommand
.buf_size
> 0) { /* buffer to fill */
2612 c
->Header
.SGList
= 1;
2613 c
->Header
.SGTotal
= 1;
2614 } else { /* no buffers to fill */
2615 c
->Header
.SGList
= 0;
2616 c
->Header
.SGTotal
= 0;
2618 memcpy(&c
->Header
.LUN
, &iocommand
.LUN_info
, sizeof(c
->Header
.LUN
));
2619 /* use the kernel address the cmd block for tag */
2620 c
->Header
.Tag
.lower
= c
->busaddr
;
2622 /* Fill in Request block */
2623 memcpy(&c
->Request
, &iocommand
.Request
,
2624 sizeof(c
->Request
));
2626 /* Fill in the scatter gather information */
2627 if (iocommand
.buf_size
> 0) {
2628 temp64
.val
= pci_map_single(h
->pdev
, buff
,
2629 iocommand
.buf_size
, PCI_DMA_BIDIRECTIONAL
);
2630 c
->SG
[0].Addr
.lower
= temp64
.val32
.lower
;
2631 c
->SG
[0].Addr
.upper
= temp64
.val32
.upper
;
2632 c
->SG
[0].Len
= iocommand
.buf_size
;
2633 c
->SG
[0].Ext
= 0; /* we are not chaining*/
2635 hpsa_scsi_do_simple_cmd_core_if_no_lockup(h
, c
);
2636 if (iocommand
.buf_size
> 0)
2637 hpsa_pci_unmap(h
->pdev
, c
, 1, PCI_DMA_BIDIRECTIONAL
);
2638 check_ioctl_unit_attention(h
, c
);
2640 /* Copy the error information out */
2641 memcpy(&iocommand
.error_info
, c
->err_info
,
2642 sizeof(iocommand
.error_info
));
2643 if (copy_to_user(argp
, &iocommand
, sizeof(iocommand
))) {
2645 cmd_special_free(h
, c
);
2648 if (iocommand
.Request
.Type
.Direction
== XFER_READ
&&
2649 iocommand
.buf_size
> 0) {
2650 /* Copy the data out of the buffer we created */
2651 if (copy_to_user(iocommand
.buf
, buff
, iocommand
.buf_size
)) {
2653 cmd_special_free(h
, c
);
2658 cmd_special_free(h
, c
);
2662 static int hpsa_big_passthru_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2664 BIG_IOCTL_Command_struct
*ioc
;
2665 struct CommandList
*c
;
2666 unsigned char **buff
= NULL
;
2667 int *buff_size
= NULL
;
2668 union u64bit temp64
;
2674 BYTE __user
*data_ptr
;
2678 if (!capable(CAP_SYS_RAWIO
))
2680 ioc
= (BIG_IOCTL_Command_struct
*)
2681 kmalloc(sizeof(*ioc
), GFP_KERNEL
);
2686 if (copy_from_user(ioc
, argp
, sizeof(*ioc
))) {
2690 if ((ioc
->buf_size
< 1) &&
2691 (ioc
->Request
.Type
.Direction
!= XFER_NONE
)) {
2695 /* Check kmalloc limits using all SGs */
2696 if (ioc
->malloc_size
> MAX_KMALLOC_SIZE
) {
2700 if (ioc
->buf_size
> ioc
->malloc_size
* MAXSGENTRIES
) {
2704 buff
= kzalloc(MAXSGENTRIES
* sizeof(char *), GFP_KERNEL
);
2709 buff_size
= kmalloc(MAXSGENTRIES
* sizeof(int), GFP_KERNEL
);
2714 left
= ioc
->buf_size
;
2715 data_ptr
= ioc
->buf
;
2717 sz
= (left
> ioc
->malloc_size
) ? ioc
->malloc_size
: left
;
2718 buff_size
[sg_used
] = sz
;
2719 buff
[sg_used
] = kmalloc(sz
, GFP_KERNEL
);
2720 if (buff
[sg_used
] == NULL
) {
2724 if (ioc
->Request
.Type
.Direction
== XFER_WRITE
) {
2725 if (copy_from_user(buff
[sg_used
], data_ptr
, sz
)) {
2730 memset(buff
[sg_used
], 0, sz
);
2735 c
= cmd_special_alloc(h
);
2740 c
->cmd_type
= CMD_IOCTL_PEND
;
2741 c
->Header
.ReplyQueue
= 0;
2742 c
->Header
.SGList
= c
->Header
.SGTotal
= sg_used
;
2743 memcpy(&c
->Header
.LUN
, &ioc
->LUN_info
, sizeof(c
->Header
.LUN
));
2744 c
->Header
.Tag
.lower
= c
->busaddr
;
2745 memcpy(&c
->Request
, &ioc
->Request
, sizeof(c
->Request
));
2746 if (ioc
->buf_size
> 0) {
2748 for (i
= 0; i
< sg_used
; i
++) {
2749 temp64
.val
= pci_map_single(h
->pdev
, buff
[i
],
2750 buff_size
[i
], PCI_DMA_BIDIRECTIONAL
);
2751 c
->SG
[i
].Addr
.lower
= temp64
.val32
.lower
;
2752 c
->SG
[i
].Addr
.upper
= temp64
.val32
.upper
;
2753 c
->SG
[i
].Len
= buff_size
[i
];
2754 /* we are not chaining */
2758 hpsa_scsi_do_simple_cmd_core_if_no_lockup(h
, c
);
2760 hpsa_pci_unmap(h
->pdev
, c
, sg_used
, PCI_DMA_BIDIRECTIONAL
);
2761 check_ioctl_unit_attention(h
, c
);
2762 /* Copy the error information out */
2763 memcpy(&ioc
->error_info
, c
->err_info
, sizeof(ioc
->error_info
));
2764 if (copy_to_user(argp
, ioc
, sizeof(*ioc
))) {
2765 cmd_special_free(h
, c
);
2769 if (ioc
->Request
.Type
.Direction
== XFER_READ
&& ioc
->buf_size
> 0) {
2770 /* Copy the data out of the buffer we created */
2771 BYTE __user
*ptr
= ioc
->buf
;
2772 for (i
= 0; i
< sg_used
; i
++) {
2773 if (copy_to_user(ptr
, buff
[i
], buff_size
[i
])) {
2774 cmd_special_free(h
, c
);
2778 ptr
+= buff_size
[i
];
2781 cmd_special_free(h
, c
);
2785 for (i
= 0; i
< sg_used
; i
++)
2794 static void check_ioctl_unit_attention(struct ctlr_info
*h
,
2795 struct CommandList
*c
)
2797 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
2798 c
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
)
2799 (void) check_for_unit_attention(h
, c
);
2804 static int hpsa_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
)
2806 struct ctlr_info
*h
;
2807 void __user
*argp
= (void __user
*)arg
;
2809 h
= sdev_to_hba(dev
);
2812 case CCISS_DEREGDISK
:
2813 case CCISS_REGNEWDISK
:
2815 hpsa_scan_start(h
->scsi_host
);
2817 case CCISS_GETPCIINFO
:
2818 return hpsa_getpciinfo_ioctl(h
, argp
);
2819 case CCISS_GETDRIVVER
:
2820 return hpsa_getdrivver_ioctl(h
, argp
);
2821 case CCISS_PASSTHRU
:
2822 return hpsa_passthru_ioctl(h
, argp
);
2823 case CCISS_BIG_PASSTHRU
:
2824 return hpsa_big_passthru_ioctl(h
, argp
);
2830 static int __devinit
hpsa_send_host_reset(struct ctlr_info
*h
,
2831 unsigned char *scsi3addr
, u8 reset_type
)
2833 struct CommandList
*c
;
2838 fill_cmd(c
, HPSA_DEVICE_RESET_MSG
, h
, NULL
, 0, 0,
2839 RAID_CTLR_LUNID
, TYPE_MSG
);
2840 c
->Request
.CDB
[1] = reset_type
; /* fill_cmd defaults to target reset */
2842 enqueue_cmd_and_start_io(h
, c
);
2843 /* Don't wait for completion, the reset won't complete. Don't free
2844 * the command either. This is the last command we will send before
2845 * re-initializing everything, so it doesn't matter and won't leak.
2850 static void fill_cmd(struct CommandList
*c
, u8 cmd
, struct ctlr_info
*h
,
2851 void *buff
, size_t size
, u8 page_code
, unsigned char *scsi3addr
,
2854 int pci_dir
= XFER_NONE
;
2856 c
->cmd_type
= CMD_IOCTL_PEND
;
2857 c
->Header
.ReplyQueue
= 0;
2858 if (buff
!= NULL
&& size
> 0) {
2859 c
->Header
.SGList
= 1;
2860 c
->Header
.SGTotal
= 1;
2862 c
->Header
.SGList
= 0;
2863 c
->Header
.SGTotal
= 0;
2865 c
->Header
.Tag
.lower
= c
->busaddr
;
2866 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
2868 c
->Request
.Type
.Type
= cmd_type
;
2869 if (cmd_type
== TYPE_CMD
) {
2872 /* are we trying to read a vital product page */
2873 if (page_code
!= 0) {
2874 c
->Request
.CDB
[1] = 0x01;
2875 c
->Request
.CDB
[2] = page_code
;
2877 c
->Request
.CDBLen
= 6;
2878 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2879 c
->Request
.Type
.Direction
= XFER_READ
;
2880 c
->Request
.Timeout
= 0;
2881 c
->Request
.CDB
[0] = HPSA_INQUIRY
;
2882 c
->Request
.CDB
[4] = size
& 0xFF;
2884 case HPSA_REPORT_LOG
:
2885 case HPSA_REPORT_PHYS
:
2886 /* Talking to controller so It's a physical command
2887 mode = 00 target = 0. Nothing to write.
2889 c
->Request
.CDBLen
= 12;
2890 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2891 c
->Request
.Type
.Direction
= XFER_READ
;
2892 c
->Request
.Timeout
= 0;
2893 c
->Request
.CDB
[0] = cmd
;
2894 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
2895 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
2896 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
2897 c
->Request
.CDB
[9] = size
& 0xFF;
2899 case HPSA_CACHE_FLUSH
:
2900 c
->Request
.CDBLen
= 12;
2901 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2902 c
->Request
.Type
.Direction
= XFER_WRITE
;
2903 c
->Request
.Timeout
= 0;
2904 c
->Request
.CDB
[0] = BMIC_WRITE
;
2905 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
2906 c
->Request
.CDB
[7] = (size
>> 8) & 0xFF;
2907 c
->Request
.CDB
[8] = size
& 0xFF;
2909 case TEST_UNIT_READY
:
2910 c
->Request
.CDBLen
= 6;
2911 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2912 c
->Request
.Type
.Direction
= XFER_NONE
;
2913 c
->Request
.Timeout
= 0;
2916 dev_warn(&h
->pdev
->dev
, "unknown command 0x%c\n", cmd
);
2920 } else if (cmd_type
== TYPE_MSG
) {
2923 case HPSA_DEVICE_RESET_MSG
:
2924 c
->Request
.CDBLen
= 16;
2925 c
->Request
.Type
.Type
= 1; /* It is a MSG not a CMD */
2926 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2927 c
->Request
.Type
.Direction
= XFER_NONE
;
2928 c
->Request
.Timeout
= 0; /* Don't time out */
2929 memset(&c
->Request
.CDB
[0], 0, sizeof(c
->Request
.CDB
));
2930 c
->Request
.CDB
[0] = cmd
;
2931 c
->Request
.CDB
[1] = 0x03; /* Reset target above */
2932 /* If bytes 4-7 are zero, it means reset the */
2934 c
->Request
.CDB
[4] = 0x00;
2935 c
->Request
.CDB
[5] = 0x00;
2936 c
->Request
.CDB
[6] = 0x00;
2937 c
->Request
.CDB
[7] = 0x00;
2941 dev_warn(&h
->pdev
->dev
, "unknown message type %d\n",
2946 dev_warn(&h
->pdev
->dev
, "unknown command type %d\n", cmd_type
);
2950 switch (c
->Request
.Type
.Direction
) {
2952 pci_dir
= PCI_DMA_FROMDEVICE
;
2955 pci_dir
= PCI_DMA_TODEVICE
;
2958 pci_dir
= PCI_DMA_NONE
;
2961 pci_dir
= PCI_DMA_BIDIRECTIONAL
;
2964 hpsa_map_one(h
->pdev
, c
, buff
, size
, pci_dir
);
2970 * Map (physical) PCI mem into (virtual) kernel space
2972 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
2974 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
2975 ulong page_offs
= ((ulong
) base
) - page_base
;
2976 void __iomem
*page_remapped
= ioremap(page_base
, page_offs
+ size
);
2978 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
2981 /* Takes cmds off the submission queue and sends them to the hardware,
2982 * then puts them on the queue of cmds waiting for completion.
2984 static void start_io(struct ctlr_info
*h
)
2986 struct CommandList
*c
;
2988 while (!list_empty(&h
->reqQ
)) {
2989 c
= list_entry(h
->reqQ
.next
, struct CommandList
, list
);
2990 /* can't do anything if fifo is full */
2991 if ((h
->access
.fifo_full(h
))) {
2992 dev_warn(&h
->pdev
->dev
, "fifo full\n");
2996 /* Get the first entry from the Request Q */
3000 /* Tell the controller execute command */
3001 h
->access
.submit_command(h
, c
);
3003 /* Put job onto the completed Q */
3008 static inline unsigned long get_next_completion(struct ctlr_info
*h
)
3010 return h
->access
.command_completed(h
);
3013 static inline bool interrupt_pending(struct ctlr_info
*h
)
3015 return h
->access
.intr_pending(h
);
3018 static inline long interrupt_not_for_us(struct ctlr_info
*h
)
3020 return (h
->access
.intr_pending(h
) == 0) ||
3021 (h
->interrupts_enabled
== 0);
3024 static inline int bad_tag(struct ctlr_info
*h
, u32 tag_index
,
3027 if (unlikely(tag_index
>= h
->nr_cmds
)) {
3028 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
3034 static inline void finish_cmd(struct CommandList
*c
, u32 raw_tag
)
3037 if (likely(c
->cmd_type
== CMD_SCSI
))
3038 complete_scsi_command(c
);
3039 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
3040 complete(c
->waiting
);
3043 static inline u32
hpsa_tag_contains_index(u32 tag
)
3045 return tag
& DIRECT_LOOKUP_BIT
;
3048 static inline u32
hpsa_tag_to_index(u32 tag
)
3050 return tag
>> DIRECT_LOOKUP_SHIFT
;
3054 static inline u32
hpsa_tag_discard_error_bits(struct ctlr_info
*h
, u32 tag
)
3056 #define HPSA_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
3057 #define HPSA_SIMPLE_ERROR_BITS 0x03
3058 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
3059 return tag
& ~HPSA_SIMPLE_ERROR_BITS
;
3060 return tag
& ~HPSA_PERF_ERROR_BITS
;
3063 /* process completion of an indexed ("direct lookup") command */
3064 static inline u32
process_indexed_cmd(struct ctlr_info
*h
,
3068 struct CommandList
*c
;
3070 tag_index
= hpsa_tag_to_index(raw_tag
);
3071 if (bad_tag(h
, tag_index
, raw_tag
))
3072 return next_command(h
);
3073 c
= h
->cmd_pool
+ tag_index
;
3074 finish_cmd(c
, raw_tag
);
3075 return next_command(h
);
3078 /* process completion of a non-indexed command */
3079 static inline u32
process_nonindexed_cmd(struct ctlr_info
*h
,
3083 struct CommandList
*c
= NULL
;
3085 tag
= hpsa_tag_discard_error_bits(h
, raw_tag
);
3086 list_for_each_entry(c
, &h
->cmpQ
, list
) {
3087 if ((c
->busaddr
& 0xFFFFFFE0) == (tag
& 0xFFFFFFE0)) {
3088 finish_cmd(c
, raw_tag
);
3089 return next_command(h
);
3092 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
3093 return next_command(h
);
3096 /* Some controllers, like p400, will give us one interrupt
3097 * after a soft reset, even if we turned interrupts off.
3098 * Only need to check for this in the hpsa_xxx_discard_completions
3101 static int ignore_bogus_interrupt(struct ctlr_info
*h
)
3103 if (likely(!reset_devices
))
3106 if (likely(h
->interrupts_enabled
))
3109 dev_info(&h
->pdev
->dev
, "Received interrupt while interrupts disabled "
3110 "(known firmware bug.) Ignoring.\n");
3115 static irqreturn_t
hpsa_intx_discard_completions(int irq
, void *dev_id
)
3117 struct ctlr_info
*h
= dev_id
;
3118 unsigned long flags
;
3121 if (ignore_bogus_interrupt(h
))
3124 if (interrupt_not_for_us(h
))
3126 spin_lock_irqsave(&h
->lock
, flags
);
3127 h
->last_intr_timestamp
= get_jiffies_64();
3128 while (interrupt_pending(h
)) {
3129 raw_tag
= get_next_completion(h
);
3130 while (raw_tag
!= FIFO_EMPTY
)
3131 raw_tag
= next_command(h
);
3133 spin_unlock_irqrestore(&h
->lock
, flags
);
3137 static irqreturn_t
hpsa_msix_discard_completions(int irq
, void *dev_id
)
3139 struct ctlr_info
*h
= dev_id
;
3140 unsigned long flags
;
3143 if (ignore_bogus_interrupt(h
))
3146 spin_lock_irqsave(&h
->lock
, flags
);
3147 h
->last_intr_timestamp
= get_jiffies_64();
3148 raw_tag
= get_next_completion(h
);
3149 while (raw_tag
!= FIFO_EMPTY
)
3150 raw_tag
= next_command(h
);
3151 spin_unlock_irqrestore(&h
->lock
, flags
);
3155 static irqreturn_t
do_hpsa_intr_intx(int irq
, void *dev_id
)
3157 struct ctlr_info
*h
= dev_id
;
3158 unsigned long flags
;
3161 if (interrupt_not_for_us(h
))
3163 spin_lock_irqsave(&h
->lock
, flags
);
3164 h
->last_intr_timestamp
= get_jiffies_64();
3165 while (interrupt_pending(h
)) {
3166 raw_tag
= get_next_completion(h
);
3167 while (raw_tag
!= FIFO_EMPTY
) {
3168 if (hpsa_tag_contains_index(raw_tag
))
3169 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3171 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3174 spin_unlock_irqrestore(&h
->lock
, flags
);
3178 static irqreturn_t
do_hpsa_intr_msi(int irq
, void *dev_id
)
3180 struct ctlr_info
*h
= dev_id
;
3181 unsigned long flags
;
3184 spin_lock_irqsave(&h
->lock
, flags
);
3185 h
->last_intr_timestamp
= get_jiffies_64();
3186 raw_tag
= get_next_completion(h
);
3187 while (raw_tag
!= FIFO_EMPTY
) {
3188 if (hpsa_tag_contains_index(raw_tag
))
3189 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3191 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3193 spin_unlock_irqrestore(&h
->lock
, flags
);
3197 /* Send a message CDB to the firmware. Careful, this only works
3198 * in simple mode, not performant mode due to the tag lookup.
3199 * We only ever use this immediately after a controller reset.
3201 static __devinit
int hpsa_message(struct pci_dev
*pdev
, unsigned char opcode
,
3205 struct CommandListHeader CommandHeader
;
3206 struct RequestBlock Request
;
3207 struct ErrDescriptor ErrorDescriptor
;
3209 struct Command
*cmd
;
3210 static const size_t cmd_sz
= sizeof(*cmd
) +
3211 sizeof(cmd
->ErrorDescriptor
);
3213 uint32_t paddr32
, tag
;
3214 void __iomem
*vaddr
;
3217 vaddr
= pci_ioremap_bar(pdev
, 0);
3221 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
3222 * CCISS commands, so they must be allocated from the lower 4GiB of
3225 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3231 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
3237 /* This must fit, because of the 32-bit consistent DMA mask. Also,
3238 * although there's no guarantee, we assume that the address is at
3239 * least 4-byte aligned (most likely, it's page-aligned).
3243 cmd
->CommandHeader
.ReplyQueue
= 0;
3244 cmd
->CommandHeader
.SGList
= 0;
3245 cmd
->CommandHeader
.SGTotal
= 0;
3246 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
3247 cmd
->CommandHeader
.Tag
.upper
= 0;
3248 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
3250 cmd
->Request
.CDBLen
= 16;
3251 cmd
->Request
.Type
.Type
= TYPE_MSG
;
3252 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
3253 cmd
->Request
.Type
.Direction
= XFER_NONE
;
3254 cmd
->Request
.Timeout
= 0; /* Don't time out */
3255 cmd
->Request
.CDB
[0] = opcode
;
3256 cmd
->Request
.CDB
[1] = type
;
3257 memset(&cmd
->Request
.CDB
[2], 0, 14); /* rest of the CDB is reserved */
3258 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(*cmd
);
3259 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
3260 cmd
->ErrorDescriptor
.Len
= sizeof(struct ErrorInfo
);
3262 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
3264 for (i
= 0; i
< HPSA_MSG_SEND_RETRY_LIMIT
; i
++) {
3265 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
3266 if ((tag
& ~HPSA_SIMPLE_ERROR_BITS
) == paddr32
)
3268 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS
);
3273 /* we leak the DMA buffer here ... no choice since the controller could
3274 * still complete the command.
3276 if (i
== HPSA_MSG_SEND_RETRY_LIMIT
) {
3277 dev_err(&pdev
->dev
, "controller message %02x:%02x timed out\n",
3282 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
3284 if (tag
& HPSA_ERROR_BIT
) {
3285 dev_err(&pdev
->dev
, "controller message %02x:%02x failed\n",
3290 dev_info(&pdev
->dev
, "controller message %02x:%02x succeeded\n",
3295 #define hpsa_noop(p) hpsa_message(p, 3, 0)
3297 static int hpsa_controller_hard_reset(struct pci_dev
*pdev
,
3298 void * __iomem vaddr
, u32 use_doorbell
)
3304 /* For everything after the P600, the PCI power state method
3305 * of resetting the controller doesn't work, so we have this
3306 * other way using the doorbell register.
3308 dev_info(&pdev
->dev
, "using doorbell to reset controller\n");
3309 writel(use_doorbell
, vaddr
+ SA5_DOORBELL
);
3310 } else { /* Try to do it the PCI power state way */
3312 /* Quoting from the Open CISS Specification: "The Power
3313 * Management Control/Status Register (CSR) controls the power
3314 * state of the device. The normal operating state is D0,
3315 * CSR=00h. The software off state is D3, CSR=03h. To reset
3316 * the controller, place the interface device in D3 then to D0,
3317 * this causes a secondary PCI reset which will reset the
3320 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
3323 "hpsa_reset_controller: "
3324 "PCI PM not supported\n");
3327 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
3328 /* enter the D3hot power management state */
3329 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
3330 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
3332 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
3336 /* enter the D0 power management state */
3337 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
3339 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
3342 * The P600 requires a small delay when changing states.
3343 * Otherwise we may think the board did not reset and we bail.
3344 * This for kdump only and is particular to the P600.
3351 static __devinit
void init_driver_version(char *driver_version
, int len
)
3353 memset(driver_version
, 0, len
);
3354 strncpy(driver_version
, "hpsa " HPSA_DRIVER_VERSION
, len
- 1);
3357 static __devinit
int write_driver_ver_to_cfgtable(
3358 struct CfgTable __iomem
*cfgtable
)
3360 char *driver_version
;
3361 int i
, size
= sizeof(cfgtable
->driver_version
);
3363 driver_version
= kmalloc(size
, GFP_KERNEL
);
3364 if (!driver_version
)
3367 init_driver_version(driver_version
, size
);
3368 for (i
= 0; i
< size
; i
++)
3369 writeb(driver_version
[i
], &cfgtable
->driver_version
[i
]);
3370 kfree(driver_version
);
3374 static __devinit
void read_driver_ver_from_cfgtable(
3375 struct CfgTable __iomem
*cfgtable
, unsigned char *driver_ver
)
3379 for (i
= 0; i
< sizeof(cfgtable
->driver_version
); i
++)
3380 driver_ver
[i
] = readb(&cfgtable
->driver_version
[i
]);
3383 static __devinit
int controller_reset_failed(
3384 struct CfgTable __iomem
*cfgtable
)
3387 char *driver_ver
, *old_driver_ver
;
3388 int rc
, size
= sizeof(cfgtable
->driver_version
);
3390 old_driver_ver
= kmalloc(2 * size
, GFP_KERNEL
);
3391 if (!old_driver_ver
)
3393 driver_ver
= old_driver_ver
+ size
;
3395 /* After a reset, the 32 bytes of "driver version" in the cfgtable
3396 * should have been changed, otherwise we know the reset failed.
3398 init_driver_version(old_driver_ver
, size
);
3399 read_driver_ver_from_cfgtable(cfgtable
, driver_ver
);
3400 rc
= !memcmp(driver_ver
, old_driver_ver
, size
);
3401 kfree(old_driver_ver
);
3404 /* This does a hard reset of the controller using PCI power management
3405 * states or the using the doorbell register.
3407 static __devinit
int hpsa_kdump_hard_reset_controller(struct pci_dev
*pdev
)
3411 u64 cfg_base_addr_index
;
3412 void __iomem
*vaddr
;
3413 unsigned long paddr
;
3414 u32 misc_fw_support
;
3416 struct CfgTable __iomem
*cfgtable
;
3419 u16 command_register
;
3421 /* For controllers as old as the P600, this is very nearly
3424 * pci_save_state(pci_dev);
3425 * pci_set_power_state(pci_dev, PCI_D3hot);
3426 * pci_set_power_state(pci_dev, PCI_D0);
3427 * pci_restore_state(pci_dev);
3429 * For controllers newer than the P600, the pci power state
3430 * method of resetting doesn't work so we have another way
3431 * using the doorbell register.
3434 rc
= hpsa_lookup_board_id(pdev
, &board_id
);
3435 if (rc
< 0 || !ctlr_is_resettable(board_id
)) {
3436 dev_warn(&pdev
->dev
, "Not resetting device.\n");
3440 /* if controller is soft- but not hard resettable... */
3441 if (!ctlr_is_hard_resettable(board_id
))
3442 return -ENOTSUPP
; /* try soft reset later. */
3444 /* Save the PCI command register */
3445 pci_read_config_word(pdev
, 4, &command_register
);
3446 /* Turn the board off. This is so that later pci_restore_state()
3447 * won't turn the board on before the rest of config space is ready.
3449 pci_disable_device(pdev
);
3450 pci_save_state(pdev
);
3452 /* find the first memory BAR, so we can find the cfg table */
3453 rc
= hpsa_pci_find_memory_BAR(pdev
, &paddr
);
3456 vaddr
= remap_pci_mem(paddr
, 0x250);
3460 /* find cfgtable in order to check if reset via doorbell is supported */
3461 rc
= hpsa_find_cfg_addrs(pdev
, vaddr
, &cfg_base_addr
,
3462 &cfg_base_addr_index
, &cfg_offset
);
3465 cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
3466 cfg_base_addr_index
) + cfg_offset
, sizeof(*cfgtable
));
3471 rc
= write_driver_ver_to_cfgtable(cfgtable
);
3475 /* If reset via doorbell register is supported, use that.
3476 * There are two such methods. Favor the newest method.
3478 misc_fw_support
= readl(&cfgtable
->misc_fw_support
);
3479 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET2
;
3481 use_doorbell
= DOORBELL_CTLR_RESET2
;
3483 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET
;
3485 dev_warn(&pdev
->dev
, "Soft reset not supported. "
3486 "Firmware update is required.\n");
3487 rc
= -ENOTSUPP
; /* try soft reset */
3488 goto unmap_cfgtable
;
3492 rc
= hpsa_controller_hard_reset(pdev
, vaddr
, use_doorbell
);
3494 goto unmap_cfgtable
;
3496 pci_restore_state(pdev
);
3497 rc
= pci_enable_device(pdev
);
3499 dev_warn(&pdev
->dev
, "failed to enable device.\n");
3500 goto unmap_cfgtable
;
3502 pci_write_config_word(pdev
, 4, command_register
);
3504 /* Some devices (notably the HP Smart Array 5i Controller)
3505 need a little pause here */
3506 msleep(HPSA_POST_RESET_PAUSE_MSECS
);
3508 /* Wait for board to become not ready, then ready. */
3509 dev_info(&pdev
->dev
, "Waiting for board to reset.\n");
3510 rc
= hpsa_wait_for_board_state(pdev
, vaddr
, BOARD_NOT_READY
);
3512 dev_warn(&pdev
->dev
,
3513 "failed waiting for board to reset."
3514 " Will try soft reset.\n");
3515 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
3516 goto unmap_cfgtable
;
3518 rc
= hpsa_wait_for_board_state(pdev
, vaddr
, BOARD_READY
);
3520 dev_warn(&pdev
->dev
,
3521 "failed waiting for board to become ready "
3522 "after hard reset\n");
3523 goto unmap_cfgtable
;
3526 rc
= controller_reset_failed(vaddr
);
3528 goto unmap_cfgtable
;
3530 dev_warn(&pdev
->dev
, "Unable to successfully reset "
3531 "controller. Will try soft reset.\n");
3534 dev_info(&pdev
->dev
, "board ready after hard reset.\n");
3546 * We cannot read the structure directly, for portability we must use
3548 * This is for debug only.
3550 static void print_cfg_table(struct device
*dev
, struct CfgTable
*tb
)
3556 dev_info(dev
, "Controller Configuration information\n");
3557 dev_info(dev
, "------------------------------------\n");
3558 for (i
= 0; i
< 4; i
++)
3559 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3560 temp_name
[4] = '\0';
3561 dev_info(dev
, " Signature = %s\n", temp_name
);
3562 dev_info(dev
, " Spec Number = %d\n", readl(&(tb
->SpecValence
)));
3563 dev_info(dev
, " Transport methods supported = 0x%x\n",
3564 readl(&(tb
->TransportSupport
)));
3565 dev_info(dev
, " Transport methods active = 0x%x\n",
3566 readl(&(tb
->TransportActive
)));
3567 dev_info(dev
, " Requested transport Method = 0x%x\n",
3568 readl(&(tb
->HostWrite
.TransportRequest
)));
3569 dev_info(dev
, " Coalesce Interrupt Delay = 0x%x\n",
3570 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3571 dev_info(dev
, " Coalesce Interrupt Count = 0x%x\n",
3572 readl(&(tb
->HostWrite
.CoalIntCount
)));
3573 dev_info(dev
, " Max outstanding commands = 0x%d\n",
3574 readl(&(tb
->CmdsOutMax
)));
3575 dev_info(dev
, " Bus Types = 0x%x\n", readl(&(tb
->BusTypes
)));
3576 for (i
= 0; i
< 16; i
++)
3577 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3578 temp_name
[16] = '\0';
3579 dev_info(dev
, " Server Name = %s\n", temp_name
);
3580 dev_info(dev
, " Heartbeat Counter = 0x%x\n\n\n",
3581 readl(&(tb
->HeartBeat
)));
3582 #endif /* HPSA_DEBUG */
3585 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3587 int i
, offset
, mem_type
, bar_type
;
3589 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
3592 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3593 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
3594 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
3597 mem_type
= pci_resource_flags(pdev
, i
) &
3598 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
3600 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
3601 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
3602 offset
+= 4; /* 32 bit */
3604 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
3607 default: /* reserved in PCI 2.2 */
3608 dev_warn(&pdev
->dev
,
3609 "base address is invalid\n");
3614 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
3620 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
3621 * controllers that are capable. If not, we use IO-APIC mode.
3624 static void __devinit
hpsa_interrupt_mode(struct ctlr_info
*h
)
3626 #ifdef CONFIG_PCI_MSI
3628 struct msix_entry hpsa_msix_entries
[4] = { {0, 0}, {0, 1},
3632 /* Some boards advertise MSI but don't really support it */
3633 if ((h
->board_id
== 0x40700E11) || (h
->board_id
== 0x40800E11) ||
3634 (h
->board_id
== 0x40820E11) || (h
->board_id
== 0x40830E11))
3635 goto default_int_mode
;
3636 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSIX
)) {
3637 dev_info(&h
->pdev
->dev
, "MSIX\n");
3638 err
= pci_enable_msix(h
->pdev
, hpsa_msix_entries
, 4);
3640 h
->intr
[0] = hpsa_msix_entries
[0].vector
;
3641 h
->intr
[1] = hpsa_msix_entries
[1].vector
;
3642 h
->intr
[2] = hpsa_msix_entries
[2].vector
;
3643 h
->intr
[3] = hpsa_msix_entries
[3].vector
;
3648 dev_warn(&h
->pdev
->dev
, "only %d MSI-X vectors "
3649 "available\n", err
);
3650 goto default_int_mode
;
3652 dev_warn(&h
->pdev
->dev
, "MSI-X init failed %d\n",
3654 goto default_int_mode
;
3657 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSI
)) {
3658 dev_info(&h
->pdev
->dev
, "MSI\n");
3659 if (!pci_enable_msi(h
->pdev
))
3662 dev_warn(&h
->pdev
->dev
, "MSI init failed\n");
3665 #endif /* CONFIG_PCI_MSI */
3666 /* if we get here we're going to use the default interrupt mode */
3667 h
->intr
[h
->intr_mode
] = h
->pdev
->irq
;
3670 static int __devinit
hpsa_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
)
3673 u32 subsystem_vendor_id
, subsystem_device_id
;
3675 subsystem_vendor_id
= pdev
->subsystem_vendor
;
3676 subsystem_device_id
= pdev
->subsystem_device
;
3677 *board_id
= ((subsystem_device_id
<< 16) & 0xffff0000) |
3678 subsystem_vendor_id
;
3680 for (i
= 0; i
< ARRAY_SIZE(products
); i
++)
3681 if (*board_id
== products
[i
].board_id
)
3684 if ((subsystem_vendor_id
!= PCI_VENDOR_ID_HP
&&
3685 subsystem_vendor_id
!= PCI_VENDOR_ID_COMPAQ
) ||
3687 dev_warn(&pdev
->dev
, "unrecognized board ID: "
3688 "0x%08x, ignoring.\n", *board_id
);
3691 return ARRAY_SIZE(products
) - 1; /* generic unknown smart array */
3694 static inline bool hpsa_board_disabled(struct pci_dev
*pdev
)
3698 (void) pci_read_config_word(pdev
, PCI_COMMAND
, &command
);
3699 return ((command
& PCI_COMMAND_MEMORY
) == 0);
3702 static int __devinit
hpsa_pci_find_memory_BAR(struct pci_dev
*pdev
,
3703 unsigned long *memory_bar
)
3707 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++)
3708 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
) {
3709 /* addressing mode bits already removed */
3710 *memory_bar
= pci_resource_start(pdev
, i
);
3711 dev_dbg(&pdev
->dev
, "memory BAR = %lx\n",
3715 dev_warn(&pdev
->dev
, "no memory BAR found\n");
3719 static int __devinit
hpsa_wait_for_board_state(struct pci_dev
*pdev
,
3720 void __iomem
*vaddr
, int wait_for_ready
)
3725 iterations
= HPSA_BOARD_READY_ITERATIONS
;
3727 iterations
= HPSA_BOARD_NOT_READY_ITERATIONS
;
3729 for (i
= 0; i
< iterations
; i
++) {
3730 scratchpad
= readl(vaddr
+ SA5_SCRATCHPAD_OFFSET
);
3731 if (wait_for_ready
) {
3732 if (scratchpad
== HPSA_FIRMWARE_READY
)
3735 if (scratchpad
!= HPSA_FIRMWARE_READY
)
3738 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS
);
3740 dev_warn(&pdev
->dev
, "board not ready, timed out.\n");
3744 static int __devinit
hpsa_find_cfg_addrs(struct pci_dev
*pdev
,
3745 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
3748 *cfg_base_addr
= readl(vaddr
+ SA5_CTCFG_OFFSET
);
3749 *cfg_offset
= readl(vaddr
+ SA5_CTMEM_OFFSET
);
3750 *cfg_base_addr
&= (u32
) 0x0000ffff;
3751 *cfg_base_addr_index
= find_PCI_BAR_index(pdev
, *cfg_base_addr
);
3752 if (*cfg_base_addr_index
== -1) {
3753 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index\n");
3759 static int __devinit
hpsa_find_cfgtables(struct ctlr_info
*h
)
3763 u64 cfg_base_addr_index
;
3767 rc
= hpsa_find_cfg_addrs(h
->pdev
, h
->vaddr
, &cfg_base_addr
,
3768 &cfg_base_addr_index
, &cfg_offset
);
3771 h
->cfgtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
3772 cfg_base_addr_index
) + cfg_offset
, sizeof(*h
->cfgtable
));
3775 rc
= write_driver_ver_to_cfgtable(h
->cfgtable
);
3778 /* Find performant mode table. */
3779 trans_offset
= readl(&h
->cfgtable
->TransMethodOffset
);
3780 h
->transtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
3781 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
3782 sizeof(*h
->transtable
));
3788 static void __devinit
hpsa_get_max_perf_mode_cmds(struct ctlr_info
*h
)
3790 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
3792 /* Limit commands in memory limited kdump scenario. */
3793 if (reset_devices
&& h
->max_commands
> 32)
3794 h
->max_commands
= 32;
3796 if (h
->max_commands
< 16) {
3797 dev_warn(&h
->pdev
->dev
, "Controller reports "
3798 "max supported commands of %d, an obvious lie. "
3799 "Using 16. Ensure that firmware is up to date.\n",
3801 h
->max_commands
= 16;
3805 /* Interrogate the hardware for some limits:
3806 * max commands, max SG elements without chaining, and with chaining,
3807 * SG chain block size, etc.
3809 static void __devinit
hpsa_find_board_params(struct ctlr_info
*h
)
3811 hpsa_get_max_perf_mode_cmds(h
);
3812 h
->nr_cmds
= h
->max_commands
- 4; /* Allow room for some ioctls */
3813 h
->maxsgentries
= readl(&(h
->cfgtable
->MaxScatterGatherElements
));
3815 * Limit in-command s/g elements to 32 save dma'able memory.
3816 * Howvever spec says if 0, use 31
3818 h
->max_cmd_sg_entries
= 31;
3819 if (h
->maxsgentries
> 512) {
3820 h
->max_cmd_sg_entries
= 32;
3821 h
->chainsize
= h
->maxsgentries
- h
->max_cmd_sg_entries
+ 1;
3822 h
->maxsgentries
--; /* save one for chain pointer */
3824 h
->maxsgentries
= 31; /* default to traditional values */
3829 static inline bool hpsa_CISS_signature_present(struct ctlr_info
*h
)
3831 if ((readb(&h
->cfgtable
->Signature
[0]) != 'C') ||
3832 (readb(&h
->cfgtable
->Signature
[1]) != 'I') ||
3833 (readb(&h
->cfgtable
->Signature
[2]) != 'S') ||
3834 (readb(&h
->cfgtable
->Signature
[3]) != 'S')) {
3835 dev_warn(&h
->pdev
->dev
, "not a valid CISS config table\n");
3841 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
3842 static inline void hpsa_enable_scsi_prefetch(struct ctlr_info
*h
)
3847 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
3849 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
3853 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
3854 * in a prefetch beyond physical memory.
3856 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info
*h
)
3860 if (h
->board_id
!= 0x3225103C)
3862 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
3863 dma_prefetch
|= 0x8000;
3864 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
3867 static void __devinit
hpsa_wait_for_mode_change_ack(struct ctlr_info
*h
)
3871 unsigned long flags
;
3873 /* under certain very rare conditions, this can take awhile.
3874 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3875 * as we enter this code.)
3877 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
3878 spin_lock_irqsave(&h
->lock
, flags
);
3879 doorbell_value
= readl(h
->vaddr
+ SA5_DOORBELL
);
3880 spin_unlock_irqrestore(&h
->lock
, flags
);
3881 if (!(doorbell_value
& CFGTBL_ChangeReq
))
3883 /* delay and try again */
3884 usleep_range(10000, 20000);
3888 static int __devinit
hpsa_enter_simple_mode(struct ctlr_info
*h
)
3892 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
3893 if (!(trans_support
& SIMPLE_MODE
))
3896 h
->max_commands
= readl(&(h
->cfgtable
->CmdsOutMax
));
3897 /* Update the field, and then ring the doorbell */
3898 writel(CFGTBL_Trans_Simple
, &(h
->cfgtable
->HostWrite
.TransportRequest
));
3899 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
3900 hpsa_wait_for_mode_change_ack(h
);
3901 print_cfg_table(&h
->pdev
->dev
, h
->cfgtable
);
3902 if (!(readl(&(h
->cfgtable
->TransportActive
)) & CFGTBL_Trans_Simple
)) {
3903 dev_warn(&h
->pdev
->dev
,
3904 "unable to get board into simple mode\n");
3907 h
->transMethod
= CFGTBL_Trans_Simple
;
3911 static int __devinit
hpsa_pci_init(struct ctlr_info
*h
)
3913 int prod_index
, err
;
3915 prod_index
= hpsa_lookup_board_id(h
->pdev
, &h
->board_id
);
3918 h
->product_name
= products
[prod_index
].product_name
;
3919 h
->access
= *(products
[prod_index
].access
);
3921 if (hpsa_board_disabled(h
->pdev
)) {
3922 dev_warn(&h
->pdev
->dev
, "controller appears to be disabled\n");
3925 err
= pci_enable_device(h
->pdev
);
3927 dev_warn(&h
->pdev
->dev
, "unable to enable PCI device\n");
3931 err
= pci_request_regions(h
->pdev
, "hpsa");
3933 dev_err(&h
->pdev
->dev
,
3934 "cannot obtain PCI resources, aborting\n");
3937 hpsa_interrupt_mode(h
);
3938 err
= hpsa_pci_find_memory_BAR(h
->pdev
, &h
->paddr
);
3940 goto err_out_free_res
;
3941 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
3944 goto err_out_free_res
;
3946 err
= hpsa_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
);
3948 goto err_out_free_res
;
3949 err
= hpsa_find_cfgtables(h
);
3951 goto err_out_free_res
;
3952 hpsa_find_board_params(h
);
3954 if (!hpsa_CISS_signature_present(h
)) {
3956 goto err_out_free_res
;
3958 hpsa_enable_scsi_prefetch(h
);
3959 hpsa_p600_dma_prefetch_quirk(h
);
3960 err
= hpsa_enter_simple_mode(h
);
3962 goto err_out_free_res
;
3967 iounmap(h
->transtable
);
3969 iounmap(h
->cfgtable
);
3973 * Deliberately omit pci_disable_device(): it does something nasty to
3974 * Smart Array controllers that pci_enable_device does not undo
3976 pci_release_regions(h
->pdev
);
3980 static void __devinit
hpsa_hba_inquiry(struct ctlr_info
*h
)
3984 #define HBA_INQUIRY_BYTE_COUNT 64
3985 h
->hba_inquiry_data
= kmalloc(HBA_INQUIRY_BYTE_COUNT
, GFP_KERNEL
);
3986 if (!h
->hba_inquiry_data
)
3988 rc
= hpsa_scsi_do_inquiry(h
, RAID_CTLR_LUNID
, 0,
3989 h
->hba_inquiry_data
, HBA_INQUIRY_BYTE_COUNT
);
3991 kfree(h
->hba_inquiry_data
);
3992 h
->hba_inquiry_data
= NULL
;
3996 static __devinit
int hpsa_init_reset_devices(struct pci_dev
*pdev
)
4003 /* Reset the controller with a PCI power-cycle or via doorbell */
4004 rc
= hpsa_kdump_hard_reset_controller(pdev
);
4006 /* -ENOTSUPP here means we cannot reset the controller
4007 * but it's already (and still) up and running in
4008 * "performant mode". Or, it might be 640x, which can't reset
4009 * due to concerns about shared bbwc between 6402/6404 pair.
4011 if (rc
== -ENOTSUPP
)
4012 return rc
; /* just try to do the kdump anyhow. */
4016 /* Now try to get the controller to respond to a no-op */
4017 dev_warn(&pdev
->dev
, "Waiting for controller to respond to no-op\n");
4018 for (i
= 0; i
< HPSA_POST_RESET_NOOP_RETRIES
; i
++) {
4019 if (hpsa_noop(pdev
) == 0)
4022 dev_warn(&pdev
->dev
, "no-op failed%s\n",
4023 (i
< 11 ? "; re-trying" : ""));
4028 static __devinit
int hpsa_allocate_cmd_pool(struct ctlr_info
*h
)
4030 h
->cmd_pool_bits
= kzalloc(
4031 DIV_ROUND_UP(h
->nr_cmds
, BITS_PER_LONG
) *
4032 sizeof(unsigned long), GFP_KERNEL
);
4033 h
->cmd_pool
= pci_alloc_consistent(h
->pdev
,
4034 h
->nr_cmds
* sizeof(*h
->cmd_pool
),
4035 &(h
->cmd_pool_dhandle
));
4036 h
->errinfo_pool
= pci_alloc_consistent(h
->pdev
,
4037 h
->nr_cmds
* sizeof(*h
->errinfo_pool
),
4038 &(h
->errinfo_pool_dhandle
));
4039 if ((h
->cmd_pool_bits
== NULL
)
4040 || (h
->cmd_pool
== NULL
)
4041 || (h
->errinfo_pool
== NULL
)) {
4042 dev_err(&h
->pdev
->dev
, "out of memory in %s", __func__
);
4048 static void hpsa_free_cmd_pool(struct ctlr_info
*h
)
4050 kfree(h
->cmd_pool_bits
);
4052 pci_free_consistent(h
->pdev
,
4053 h
->nr_cmds
* sizeof(struct CommandList
),
4054 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4055 if (h
->errinfo_pool
)
4056 pci_free_consistent(h
->pdev
,
4057 h
->nr_cmds
* sizeof(struct ErrorInfo
),
4059 h
->errinfo_pool_dhandle
);
4062 static int hpsa_request_irq(struct ctlr_info
*h
,
4063 irqreturn_t (*msixhandler
)(int, void *),
4064 irqreturn_t (*intxhandler
)(int, void *))
4068 if (h
->msix_vector
|| h
->msi_vector
)
4069 rc
= request_irq(h
->intr
[h
->intr_mode
], msixhandler
,
4070 IRQF_DISABLED
, h
->devname
, h
);
4072 rc
= request_irq(h
->intr
[h
->intr_mode
], intxhandler
,
4073 IRQF_DISABLED
, h
->devname
, h
);
4075 dev_err(&h
->pdev
->dev
, "unable to get irq %d for %s\n",
4076 h
->intr
[h
->intr_mode
], h
->devname
);
4082 static int __devinit
hpsa_kdump_soft_reset(struct ctlr_info
*h
)
4084 if (hpsa_send_host_reset(h
, RAID_CTLR_LUNID
,
4085 HPSA_RESET_TYPE_CONTROLLER
)) {
4086 dev_warn(&h
->pdev
->dev
, "Resetting array controller failed.\n");
4090 dev_info(&h
->pdev
->dev
, "Waiting for board to soft reset.\n");
4091 if (hpsa_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_NOT_READY
)) {
4092 dev_warn(&h
->pdev
->dev
, "Soft reset had no effect.\n");
4096 dev_info(&h
->pdev
->dev
, "Board reset, awaiting READY status.\n");
4097 if (hpsa_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
)) {
4098 dev_warn(&h
->pdev
->dev
, "Board failed to become ready "
4099 "after soft reset.\n");
4106 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info
*h
)
4108 free_irq(h
->intr
[h
->intr_mode
], h
);
4109 #ifdef CONFIG_PCI_MSI
4111 pci_disable_msix(h
->pdev
);
4112 else if (h
->msi_vector
)
4113 pci_disable_msi(h
->pdev
);
4114 #endif /* CONFIG_PCI_MSI */
4115 hpsa_free_sg_chain_blocks(h
);
4116 hpsa_free_cmd_pool(h
);
4117 kfree(h
->blockFetchTable
);
4118 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
4119 h
->reply_pool
, h
->reply_pool_dhandle
);
4123 iounmap(h
->transtable
);
4125 iounmap(h
->cfgtable
);
4126 pci_release_regions(h
->pdev
);
4130 static void remove_ctlr_from_lockup_detector_list(struct ctlr_info
*h
)
4132 assert_spin_locked(&lockup_detector_lock
);
4133 if (!hpsa_lockup_detector
)
4135 if (h
->lockup_detected
)
4136 return; /* already stopped the lockup detector */
4137 list_del(&h
->lockup_list
);
4140 /* Called when controller lockup detected. */
4141 static void fail_all_cmds_on_list(struct ctlr_info
*h
, struct list_head
*list
)
4143 struct CommandList
*c
= NULL
;
4145 assert_spin_locked(&h
->lock
);
4146 /* Mark all outstanding commands as failed and complete them. */
4147 while (!list_empty(list
)) {
4148 c
= list_entry(list
->next
, struct CommandList
, list
);
4149 c
->err_info
->CommandStatus
= CMD_HARDWARE_ERR
;
4150 finish_cmd(c
, c
->Header
.Tag
.lower
);
4154 static void controller_lockup_detected(struct ctlr_info
*h
)
4156 unsigned long flags
;
4158 assert_spin_locked(&lockup_detector_lock
);
4159 remove_ctlr_from_lockup_detector_list(h
);
4160 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4161 spin_lock_irqsave(&h
->lock
, flags
);
4162 h
->lockup_detected
= readl(h
->vaddr
+ SA5_SCRATCHPAD_OFFSET
);
4163 spin_unlock_irqrestore(&h
->lock
, flags
);
4164 dev_warn(&h
->pdev
->dev
, "Controller lockup detected: 0x%08x\n",
4165 h
->lockup_detected
);
4166 pci_disable_device(h
->pdev
);
4167 spin_lock_irqsave(&h
->lock
, flags
);
4168 fail_all_cmds_on_list(h
, &h
->cmpQ
);
4169 fail_all_cmds_on_list(h
, &h
->reqQ
);
4170 spin_unlock_irqrestore(&h
->lock
, flags
);
4173 #define HEARTBEAT_SAMPLE_INTERVAL (10 * HZ)
4174 #define HEARTBEAT_CHECK_MINIMUM_INTERVAL (HEARTBEAT_SAMPLE_INTERVAL / 2)
4176 static void detect_controller_lockup(struct ctlr_info
*h
)
4180 unsigned long flags
;
4182 assert_spin_locked(&lockup_detector_lock
);
4183 now
= get_jiffies_64();
4184 /* If we've received an interrupt recently, we're ok. */
4185 if (time_after64(h
->last_intr_timestamp
+
4186 (HEARTBEAT_CHECK_MINIMUM_INTERVAL
), now
))
4190 * If we've already checked the heartbeat recently, we're ok.
4191 * This could happen if someone sends us a signal. We
4192 * otherwise don't care about signals in this thread.
4194 if (time_after64(h
->last_heartbeat_timestamp
+
4195 (HEARTBEAT_CHECK_MINIMUM_INTERVAL
), now
))
4198 /* If heartbeat has not changed since we last looked, we're not ok. */
4199 spin_lock_irqsave(&h
->lock
, flags
);
4200 heartbeat
= readl(&h
->cfgtable
->HeartBeat
);
4201 spin_unlock_irqrestore(&h
->lock
, flags
);
4202 if (h
->last_heartbeat
== heartbeat
) {
4203 controller_lockup_detected(h
);
4208 h
->last_heartbeat
= heartbeat
;
4209 h
->last_heartbeat_timestamp
= now
;
4212 static int detect_controller_lockup_thread(void *notused
)
4214 struct ctlr_info
*h
;
4215 unsigned long flags
;
4218 struct list_head
*this, *tmp
;
4220 schedule_timeout_interruptible(HEARTBEAT_SAMPLE_INTERVAL
);
4221 if (kthread_should_stop())
4223 spin_lock_irqsave(&lockup_detector_lock
, flags
);
4224 list_for_each_safe(this, tmp
, &hpsa_ctlr_list
) {
4225 h
= list_entry(this, struct ctlr_info
, lockup_list
);
4226 detect_controller_lockup(h
);
4228 spin_unlock_irqrestore(&lockup_detector_lock
, flags
);
4233 static void add_ctlr_to_lockup_detector_list(struct ctlr_info
*h
)
4235 unsigned long flags
;
4237 spin_lock_irqsave(&lockup_detector_lock
, flags
);
4238 list_add_tail(&h
->lockup_list
, &hpsa_ctlr_list
);
4239 spin_unlock_irqrestore(&lockup_detector_lock
, flags
);
4242 static void start_controller_lockup_detector(struct ctlr_info
*h
)
4244 /* Start the lockup detector thread if not already started */
4245 if (!hpsa_lockup_detector
) {
4246 spin_lock_init(&lockup_detector_lock
);
4247 hpsa_lockup_detector
=
4248 kthread_run(detect_controller_lockup_thread
,
4251 if (!hpsa_lockup_detector
) {
4252 dev_warn(&h
->pdev
->dev
,
4253 "Could not start lockup detector thread\n");
4256 add_ctlr_to_lockup_detector_list(h
);
4259 static void stop_controller_lockup_detector(struct ctlr_info
*h
)
4261 unsigned long flags
;
4263 spin_lock_irqsave(&lockup_detector_lock
, flags
);
4264 remove_ctlr_from_lockup_detector_list(h
);
4265 /* If the list of ctlr's to monitor is empty, stop the thread */
4266 if (list_empty(&hpsa_ctlr_list
)) {
4267 kthread_stop(hpsa_lockup_detector
);
4268 hpsa_lockup_detector
= NULL
;
4270 spin_unlock_irqrestore(&lockup_detector_lock
, flags
);
4273 static int __devinit
hpsa_init_one(struct pci_dev
*pdev
,
4274 const struct pci_device_id
*ent
)
4277 struct ctlr_info
*h
;
4278 int try_soft_reset
= 0;
4279 unsigned long flags
;
4281 if (number_of_controllers
== 0)
4282 printk(KERN_INFO DRIVER_NAME
"\n");
4284 rc
= hpsa_init_reset_devices(pdev
);
4286 if (rc
!= -ENOTSUPP
)
4288 /* If the reset fails in a particular way (it has no way to do
4289 * a proper hard reset, so returns -ENOTSUPP) we can try to do
4290 * a soft reset once we get the controller configured up to the
4291 * point that it can accept a command.
4297 reinit_after_soft_reset
:
4299 /* Command structures must be aligned on a 32-byte boundary because
4300 * the 5 lower bits of the address are used by the hardware. and by
4301 * the driver. See comments in hpsa.h for more info.
4303 #define COMMANDLIST_ALIGNMENT 32
4304 BUILD_BUG_ON(sizeof(struct CommandList
) % COMMANDLIST_ALIGNMENT
);
4305 h
= kzalloc(sizeof(*h
), GFP_KERNEL
);
4310 h
->intr_mode
= hpsa_simple_mode
? SIMPLE_MODE_INT
: PERF_MODE_INT
;
4311 INIT_LIST_HEAD(&h
->cmpQ
);
4312 INIT_LIST_HEAD(&h
->reqQ
);
4313 spin_lock_init(&h
->lock
);
4314 spin_lock_init(&h
->scan_lock
);
4315 rc
= hpsa_pci_init(h
);
4319 sprintf(h
->devname
, "hpsa%d", number_of_controllers
);
4320 h
->ctlr
= number_of_controllers
;
4321 number_of_controllers
++;
4323 /* configure PCI DMA stuff */
4324 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(64));
4328 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
4332 dev_err(&pdev
->dev
, "no suitable DMA available\n");
4337 /* make sure the board interrupts are off */
4338 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4340 if (hpsa_request_irq(h
, do_hpsa_intr_msi
, do_hpsa_intr_intx
))
4342 dev_info(&pdev
->dev
, "%s: <0x%x> at IRQ %d%s using DAC\n",
4343 h
->devname
, pdev
->device
,
4344 h
->intr
[h
->intr_mode
], dac
? "" : " not");
4345 if (hpsa_allocate_cmd_pool(h
))
4347 if (hpsa_allocate_sg_chain_blocks(h
))
4349 init_waitqueue_head(&h
->scan_wait_queue
);
4350 h
->scan_finished
= 1; /* no scan currently in progress */
4352 pci_set_drvdata(pdev
, h
);
4354 h
->scsi_host
= NULL
;
4355 spin_lock_init(&h
->devlock
);
4356 hpsa_put_ctlr_into_performant_mode(h
);
4358 /* At this point, the controller is ready to take commands.
4359 * Now, if reset_devices and the hard reset didn't work, try
4360 * the soft reset and see if that works.
4362 if (try_soft_reset
) {
4364 /* This is kind of gross. We may or may not get a completion
4365 * from the soft reset command, and if we do, then the value
4366 * from the fifo may or may not be valid. So, we wait 10 secs
4367 * after the reset throwing away any completions we get during
4368 * that time. Unregister the interrupt handler and register
4369 * fake ones to scoop up any residual completions.
4371 spin_lock_irqsave(&h
->lock
, flags
);
4372 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4373 spin_unlock_irqrestore(&h
->lock
, flags
);
4374 free_irq(h
->intr
[h
->intr_mode
], h
);
4375 rc
= hpsa_request_irq(h
, hpsa_msix_discard_completions
,
4376 hpsa_intx_discard_completions
);
4378 dev_warn(&h
->pdev
->dev
, "Failed to request_irq after "
4383 rc
= hpsa_kdump_soft_reset(h
);
4385 /* Neither hard nor soft reset worked, we're hosed. */
4388 dev_info(&h
->pdev
->dev
, "Board READY.\n");
4389 dev_info(&h
->pdev
->dev
,
4390 "Waiting for stale completions to drain.\n");
4391 h
->access
.set_intr_mask(h
, HPSA_INTR_ON
);
4393 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4395 rc
= controller_reset_failed(h
->cfgtable
);
4397 dev_info(&h
->pdev
->dev
,
4398 "Soft reset appears to have failed.\n");
4400 /* since the controller's reset, we have to go back and re-init
4401 * everything. Easiest to just forget what we've done and do it
4404 hpsa_undo_allocations_after_kdump_soft_reset(h
);
4407 /* don't go to clean4, we already unallocated */
4410 goto reinit_after_soft_reset
;
4413 /* Turn the interrupts on so we can service requests */
4414 h
->access
.set_intr_mask(h
, HPSA_INTR_ON
);
4416 hpsa_hba_inquiry(h
);
4417 hpsa_register_scsi(h
); /* hook ourselves into SCSI subsystem */
4418 start_controller_lockup_detector(h
);
4422 hpsa_free_sg_chain_blocks(h
);
4423 hpsa_free_cmd_pool(h
);
4424 free_irq(h
->intr
[h
->intr_mode
], h
);
4431 static void hpsa_flush_cache(struct ctlr_info
*h
)
4434 struct CommandList
*c
;
4436 flush_buf
= kzalloc(4, GFP_KERNEL
);
4440 c
= cmd_special_alloc(h
);
4442 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
4445 fill_cmd(c
, HPSA_CACHE_FLUSH
, h
, flush_buf
, 4, 0,
4446 RAID_CTLR_LUNID
, TYPE_CMD
);
4447 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_TODEVICE
);
4448 if (c
->err_info
->CommandStatus
!= 0)
4449 dev_warn(&h
->pdev
->dev
,
4450 "error flushing cache on controller\n");
4451 cmd_special_free(h
, c
);
4456 static void hpsa_shutdown(struct pci_dev
*pdev
)
4458 struct ctlr_info
*h
;
4460 h
= pci_get_drvdata(pdev
);
4461 /* Turn board interrupts off and send the flush cache command
4462 * sendcmd will turn off interrupt, and send the flush...
4463 * To write all data in the battery backed cache to disks
4465 hpsa_flush_cache(h
);
4466 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4467 free_irq(h
->intr
[h
->intr_mode
], h
);
4468 #ifdef CONFIG_PCI_MSI
4470 pci_disable_msix(h
->pdev
);
4471 else if (h
->msi_vector
)
4472 pci_disable_msi(h
->pdev
);
4473 #endif /* CONFIG_PCI_MSI */
4476 static void __devexit
hpsa_remove_one(struct pci_dev
*pdev
)
4478 struct ctlr_info
*h
;
4480 if (pci_get_drvdata(pdev
) == NULL
) {
4481 dev_err(&pdev
->dev
, "unable to remove device\n");
4484 h
= pci_get_drvdata(pdev
);
4485 stop_controller_lockup_detector(h
);
4486 hpsa_unregister_scsi(h
); /* unhook from SCSI subsystem */
4487 hpsa_shutdown(pdev
);
4489 iounmap(h
->transtable
);
4490 iounmap(h
->cfgtable
);
4491 hpsa_free_sg_chain_blocks(h
);
4492 pci_free_consistent(h
->pdev
,
4493 h
->nr_cmds
* sizeof(struct CommandList
),
4494 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4495 pci_free_consistent(h
->pdev
,
4496 h
->nr_cmds
* sizeof(struct ErrorInfo
),
4497 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
4498 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
4499 h
->reply_pool
, h
->reply_pool_dhandle
);
4500 kfree(h
->cmd_pool_bits
);
4501 kfree(h
->blockFetchTable
);
4502 kfree(h
->hba_inquiry_data
);
4504 * Deliberately omit pci_disable_device(): it does something nasty to
4505 * Smart Array controllers that pci_enable_device does not undo
4507 pci_release_regions(pdev
);
4508 pci_set_drvdata(pdev
, NULL
);
4512 static int hpsa_suspend(__attribute__((unused
)) struct pci_dev
*pdev
,
4513 __attribute__((unused
)) pm_message_t state
)
4518 static int hpsa_resume(__attribute__((unused
)) struct pci_dev
*pdev
)
4523 static struct pci_driver hpsa_pci_driver
= {
4525 .probe
= hpsa_init_one
,
4526 .remove
= __devexit_p(hpsa_remove_one
),
4527 .id_table
= hpsa_pci_device_id
, /* id_table */
4528 .shutdown
= hpsa_shutdown
,
4529 .suspend
= hpsa_suspend
,
4530 .resume
= hpsa_resume
,
4533 /* Fill in bucket_map[], given nsgs (the max number of
4534 * scatter gather elements supported) and bucket[],
4535 * which is an array of 8 integers. The bucket[] array
4536 * contains 8 different DMA transfer sizes (in 16
4537 * byte increments) which the controller uses to fetch
4538 * commands. This function fills in bucket_map[], which
4539 * maps a given number of scatter gather elements to one of
4540 * the 8 DMA transfer sizes. The point of it is to allow the
4541 * controller to only do as much DMA as needed to fetch the
4542 * command, with the DMA transfer size encoded in the lower
4543 * bits of the command address.
4545 static void calc_bucket_map(int bucket
[], int num_buckets
,
4546 int nsgs
, int *bucket_map
)
4550 /* even a command with 0 SGs requires 4 blocks */
4551 #define MINIMUM_TRANSFER_BLOCKS 4
4552 #define NUM_BUCKETS 8
4553 /* Note, bucket_map must have nsgs+1 entries. */
4554 for (i
= 0; i
<= nsgs
; i
++) {
4555 /* Compute size of a command with i SG entries */
4556 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
4557 b
= num_buckets
; /* Assume the biggest bucket */
4558 /* Find the bucket that is just big enough */
4559 for (j
= 0; j
< 8; j
++) {
4560 if (bucket
[j
] >= size
) {
4565 /* for a command with i SG entries, use bucket b. */
4570 static __devinit
void hpsa_enter_performant_mode(struct ctlr_info
*h
,
4574 unsigned long register_value
;
4576 /* This is a bit complicated. There are 8 registers on
4577 * the controller which we write to to tell it 8 different
4578 * sizes of commands which there may be. It's a way of
4579 * reducing the DMA done to fetch each command. Encoded into
4580 * each command's tag are 3 bits which communicate to the controller
4581 * which of the eight sizes that command fits within. The size of
4582 * each command depends on how many scatter gather entries there are.
4583 * Each SG entry requires 16 bytes. The eight registers are programmed
4584 * with the number of 16-byte blocks a command of that size requires.
4585 * The smallest command possible requires 5 such 16 byte blocks.
4586 * the largest command possible requires MAXSGENTRIES + 4 16-byte
4587 * blocks. Note, this only extends to the SG entries contained
4588 * within the command block, and does not extend to chained blocks
4589 * of SG elements. bft[] contains the eight values we write to
4590 * the registers. They are not evenly distributed, but have more
4591 * sizes for small commands, and fewer sizes for larger commands.
4593 int bft
[8] = {5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES
+ 4};
4594 BUILD_BUG_ON(28 > MAXSGENTRIES
+ 4);
4595 /* 5 = 1 s/g entry or 4k
4596 * 6 = 2 s/g entry or 8k
4597 * 8 = 4 s/g entry or 16k
4598 * 10 = 6 s/g entry or 24k
4601 h
->reply_pool_wraparound
= 1; /* spec: init to 1 */
4603 /* Controller spec: zero out this buffer. */
4604 memset(h
->reply_pool
, 0, h
->reply_pool_size
);
4605 h
->reply_pool_head
= h
->reply_pool
;
4607 bft
[7] = h
->max_sg_entries
+ 4;
4608 calc_bucket_map(bft
, ARRAY_SIZE(bft
), 32, h
->blockFetchTable
);
4609 for (i
= 0; i
< 8; i
++)
4610 writel(bft
[i
], &h
->transtable
->BlockFetch
[i
]);
4612 /* size of controller ring buffer */
4613 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
4614 writel(1, &h
->transtable
->RepQCount
);
4615 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
4616 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
4617 writel(h
->reply_pool_dhandle
, &h
->transtable
->RepQAddr0Low32
);
4618 writel(0, &h
->transtable
->RepQAddr0High32
);
4619 writel(CFGTBL_Trans_Performant
| use_short_tags
,
4620 &(h
->cfgtable
->HostWrite
.TransportRequest
));
4621 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
4622 hpsa_wait_for_mode_change_ack(h
);
4623 register_value
= readl(&(h
->cfgtable
->TransportActive
));
4624 if (!(register_value
& CFGTBL_Trans_Performant
)) {
4625 dev_warn(&h
->pdev
->dev
, "unable to get board into"
4626 " performant mode\n");
4629 /* Change the access methods to the performant access methods */
4630 h
->access
= SA5_performant_access
;
4631 h
->transMethod
= CFGTBL_Trans_Performant
;
4634 static __devinit
void hpsa_put_ctlr_into_performant_mode(struct ctlr_info
*h
)
4638 if (hpsa_simple_mode
)
4641 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
4642 if (!(trans_support
& PERFORMANT_MODE
))
4645 hpsa_get_max_perf_mode_cmds(h
);
4646 h
->max_sg_entries
= 32;
4647 /* Performant mode ring buffer and supporting data structures */
4648 h
->reply_pool_size
= h
->max_commands
* sizeof(u64
);
4649 h
->reply_pool
= pci_alloc_consistent(h
->pdev
, h
->reply_pool_size
,
4650 &(h
->reply_pool_dhandle
));
4652 /* Need a block fetch table for performant mode */
4653 h
->blockFetchTable
= kmalloc(((h
->max_sg_entries
+1) *
4654 sizeof(u32
)), GFP_KERNEL
);
4656 if ((h
->reply_pool
== NULL
)
4657 || (h
->blockFetchTable
== NULL
))
4660 hpsa_enter_performant_mode(h
,
4661 trans_support
& CFGTBL_Trans_use_short_tags
);
4667 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
4668 h
->reply_pool
, h
->reply_pool_dhandle
);
4669 kfree(h
->blockFetchTable
);
4673 * This is it. Register the PCI driver information for the cards we control
4674 * the OS will call our registered routines when it finds one of our cards.
4676 static int __init
hpsa_init(void)
4678 return pci_register_driver(&hpsa_pci_driver
);
4681 static void __exit
hpsa_cleanup(void)
4683 pci_unregister_driver(&hpsa_pci_driver
);
4686 module_init(hpsa_init
);
4687 module_exit(hpsa_cleanup
);