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/pci-aspm.h>
27 #include <linux/kernel.h>
28 #include <linux/slab.h>
29 #include <linux/delay.h>
31 #include <linux/timer.h>
32 #include <linux/seq_file.h>
33 #include <linux/init.h>
34 #include <linux/spinlock.h>
35 #include <linux/compat.h>
36 #include <linux/blktrace_api.h>
37 #include <linux/uaccess.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/completion.h>
41 #include <linux/moduleparam.h>
42 #include <scsi/scsi.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <scsi/scsi_device.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_tcq.h>
47 #include <linux/cciss_ioctl.h>
48 #include <linux/string.h>
49 #include <linux/bitmap.h>
50 #include <asm/atomic.h>
51 #include <linux/kthread.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 irqreturn_t
do_hpsa_intr_intx(int irq
, void *dev_id
);
132 static irqreturn_t
do_hpsa_intr_msi(int irq
, void *dev_id
);
133 static int hpsa_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
);
134 static void start_io(struct ctlr_info
*h
);
137 static int hpsa_compat_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
);
140 static void cmd_free(struct ctlr_info
*h
, struct CommandList
*c
);
141 static void cmd_special_free(struct ctlr_info
*h
, struct CommandList
*c
);
142 static struct CommandList
*cmd_alloc(struct ctlr_info
*h
);
143 static struct CommandList
*cmd_special_alloc(struct ctlr_info
*h
);
144 static void fill_cmd(struct CommandList
*c
, u8 cmd
, struct ctlr_info
*h
,
145 void *buff
, size_t size
, u8 page_code
, unsigned char *scsi3addr
,
148 static int hpsa_scsi_queue_command(struct Scsi_Host
*h
, struct scsi_cmnd
*cmd
);
149 static void hpsa_scan_start(struct Scsi_Host
*);
150 static int hpsa_scan_finished(struct Scsi_Host
*sh
,
151 unsigned long elapsed_time
);
152 static int hpsa_change_queue_depth(struct scsi_device
*sdev
,
153 int qdepth
, int reason
);
155 static int hpsa_eh_device_reset_handler(struct scsi_cmnd
*scsicmd
);
156 static int hpsa_slave_alloc(struct scsi_device
*sdev
);
157 static void hpsa_slave_destroy(struct scsi_device
*sdev
);
159 static void hpsa_update_scsi_devices(struct ctlr_info
*h
, int hostno
);
160 static int check_for_unit_attention(struct ctlr_info
*h
,
161 struct CommandList
*c
);
162 static void check_ioctl_unit_attention(struct ctlr_info
*h
,
163 struct CommandList
*c
);
164 /* performant mode helper functions */
165 static void calc_bucket_map(int *bucket
, int num_buckets
,
166 int nsgs
, int *bucket_map
);
167 static __devinit
void hpsa_put_ctlr_into_performant_mode(struct ctlr_info
*h
);
168 static inline u32
next_command(struct ctlr_info
*h
);
169 static int __devinit
hpsa_find_cfg_addrs(struct pci_dev
*pdev
,
170 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
172 static int __devinit
hpsa_pci_find_memory_BAR(struct pci_dev
*pdev
,
173 unsigned long *memory_bar
);
174 static int __devinit
hpsa_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
);
175 static int __devinit
hpsa_wait_for_board_state(struct pci_dev
*pdev
,
176 void __iomem
*vaddr
, int wait_for_ready
);
177 #define BOARD_NOT_READY 0
178 #define BOARD_READY 1
180 static inline struct ctlr_info
*sdev_to_hba(struct scsi_device
*sdev
)
182 unsigned long *priv
= shost_priv(sdev
->host
);
183 return (struct ctlr_info
*) *priv
;
186 static inline struct ctlr_info
*shost_to_hba(struct Scsi_Host
*sh
)
188 unsigned long *priv
= shost_priv(sh
);
189 return (struct ctlr_info
*) *priv
;
192 static int check_for_unit_attention(struct ctlr_info
*h
,
193 struct CommandList
*c
)
195 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
198 switch (c
->err_info
->SenseInfo
[12]) {
200 dev_warn(&h
->pdev
->dev
, "hpsa%d: a state change "
201 "detected, command retried\n", h
->ctlr
);
204 dev_warn(&h
->pdev
->dev
, "hpsa%d: LUN failure "
205 "detected, action required\n", h
->ctlr
);
207 case REPORT_LUNS_CHANGED
:
208 dev_warn(&h
->pdev
->dev
, "hpsa%d: report LUN data "
209 "changed, action required\n", h
->ctlr
);
211 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
215 dev_warn(&h
->pdev
->dev
, "hpsa%d: a power on "
216 "or device reset detected\n", h
->ctlr
);
218 case UNIT_ATTENTION_CLEARED
:
219 dev_warn(&h
->pdev
->dev
, "hpsa%d: unit attention "
220 "cleared by another initiator\n", h
->ctlr
);
223 dev_warn(&h
->pdev
->dev
, "hpsa%d: unknown "
224 "unit attention detected\n", h
->ctlr
);
230 static ssize_t
host_store_rescan(struct device
*dev
,
231 struct device_attribute
*attr
,
232 const char *buf
, size_t count
)
235 struct Scsi_Host
*shost
= class_to_shost(dev
);
236 h
= shost_to_hba(shost
);
237 hpsa_scan_start(h
->scsi_host
);
241 static ssize_t
host_show_firmware_revision(struct device
*dev
,
242 struct device_attribute
*attr
, char *buf
)
245 struct Scsi_Host
*shost
= class_to_shost(dev
);
246 unsigned char *fwrev
;
248 h
= shost_to_hba(shost
);
249 if (!h
->hba_inquiry_data
)
251 fwrev
= &h
->hba_inquiry_data
[32];
252 return snprintf(buf
, 20, "%c%c%c%c\n",
253 fwrev
[0], fwrev
[1], fwrev
[2], fwrev
[3]);
256 static ssize_t
host_show_commands_outstanding(struct device
*dev
,
257 struct device_attribute
*attr
, char *buf
)
259 struct Scsi_Host
*shost
= class_to_shost(dev
);
260 struct ctlr_info
*h
= shost_to_hba(shost
);
262 return snprintf(buf
, 20, "%d\n", h
->commands_outstanding
);
265 static ssize_t
host_show_transport_mode(struct device
*dev
,
266 struct device_attribute
*attr
, char *buf
)
269 struct Scsi_Host
*shost
= class_to_shost(dev
);
271 h
= shost_to_hba(shost
);
272 return snprintf(buf
, 20, "%s\n",
273 h
->transMethod
& CFGTBL_Trans_Performant
?
274 "performant" : "simple");
277 /* List of controllers which cannot be hard reset on kexec with reset_devices */
278 static u32 unresettable_controller
[] = {
279 0x324a103C, /* Smart Array P712m */
280 0x324b103C, /* SmartArray P711m */
281 0x3223103C, /* Smart Array P800 */
282 0x3234103C, /* Smart Array P400 */
283 0x3235103C, /* Smart Array P400i */
284 0x3211103C, /* Smart Array E200i */
285 0x3212103C, /* Smart Array E200 */
286 0x3213103C, /* Smart Array E200i */
287 0x3214103C, /* Smart Array E200i */
288 0x3215103C, /* Smart Array E200i */
289 0x3237103C, /* Smart Array E500 */
290 0x323D103C, /* Smart Array P700m */
291 0x409C0E11, /* Smart Array 6400 */
292 0x409D0E11, /* Smart Array 6400 EM */
295 /* List of controllers which cannot even be soft reset */
296 static u32 soft_unresettable_controller
[] = {
297 /* Exclude 640x boards. These are two pci devices in one slot
298 * which share a battery backed cache module. One controls the
299 * cache, the other accesses the cache through the one that controls
300 * it. If we reset the one controlling the cache, the other will
301 * likely not be happy. Just forbid resetting this conjoined mess.
302 * The 640x isn't really supported by hpsa anyway.
304 0x409C0E11, /* Smart Array 6400 */
305 0x409D0E11, /* Smart Array 6400 EM */
308 static int ctlr_is_hard_resettable(u32 board_id
)
312 for (i
= 0; i
< ARRAY_SIZE(unresettable_controller
); i
++)
313 if (unresettable_controller
[i
] == board_id
)
318 static int ctlr_is_soft_resettable(u32 board_id
)
322 for (i
= 0; i
< ARRAY_SIZE(soft_unresettable_controller
); i
++)
323 if (soft_unresettable_controller
[i
] == board_id
)
328 static int ctlr_is_resettable(u32 board_id
)
330 return ctlr_is_hard_resettable(board_id
) ||
331 ctlr_is_soft_resettable(board_id
);
334 static ssize_t
host_show_resettable(struct device
*dev
,
335 struct device_attribute
*attr
, char *buf
)
338 struct Scsi_Host
*shost
= class_to_shost(dev
);
340 h
= shost_to_hba(shost
);
341 return snprintf(buf
, 20, "%d\n", ctlr_is_resettable(h
->board_id
));
344 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr
[])
346 return (scsi3addr
[3] & 0xC0) == 0x40;
349 static const char *raid_label
[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
352 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
354 static ssize_t
raid_level_show(struct device
*dev
,
355 struct device_attribute
*attr
, char *buf
)
358 unsigned char rlevel
;
360 struct scsi_device
*sdev
;
361 struct hpsa_scsi_dev_t
*hdev
;
364 sdev
= to_scsi_device(dev
);
365 h
= sdev_to_hba(sdev
);
366 spin_lock_irqsave(&h
->lock
, flags
);
367 hdev
= sdev
->hostdata
;
369 spin_unlock_irqrestore(&h
->lock
, flags
);
373 /* Is this even a logical drive? */
374 if (!is_logical_dev_addr_mode(hdev
->scsi3addr
)) {
375 spin_unlock_irqrestore(&h
->lock
, flags
);
376 l
= snprintf(buf
, PAGE_SIZE
, "N/A\n");
380 rlevel
= hdev
->raid_level
;
381 spin_unlock_irqrestore(&h
->lock
, flags
);
382 if (rlevel
> RAID_UNKNOWN
)
383 rlevel
= RAID_UNKNOWN
;
384 l
= snprintf(buf
, PAGE_SIZE
, "RAID %s\n", raid_label
[rlevel
]);
388 static ssize_t
lunid_show(struct device
*dev
,
389 struct device_attribute
*attr
, char *buf
)
392 struct scsi_device
*sdev
;
393 struct hpsa_scsi_dev_t
*hdev
;
395 unsigned char lunid
[8];
397 sdev
= to_scsi_device(dev
);
398 h
= sdev_to_hba(sdev
);
399 spin_lock_irqsave(&h
->lock
, flags
);
400 hdev
= sdev
->hostdata
;
402 spin_unlock_irqrestore(&h
->lock
, flags
);
405 memcpy(lunid
, hdev
->scsi3addr
, sizeof(lunid
));
406 spin_unlock_irqrestore(&h
->lock
, flags
);
407 return snprintf(buf
, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
408 lunid
[0], lunid
[1], lunid
[2], lunid
[3],
409 lunid
[4], lunid
[5], lunid
[6], lunid
[7]);
412 static ssize_t
unique_id_show(struct device
*dev
,
413 struct device_attribute
*attr
, char *buf
)
416 struct scsi_device
*sdev
;
417 struct hpsa_scsi_dev_t
*hdev
;
419 unsigned char sn
[16];
421 sdev
= to_scsi_device(dev
);
422 h
= sdev_to_hba(sdev
);
423 spin_lock_irqsave(&h
->lock
, flags
);
424 hdev
= sdev
->hostdata
;
426 spin_unlock_irqrestore(&h
->lock
, flags
);
429 memcpy(sn
, hdev
->device_id
, sizeof(sn
));
430 spin_unlock_irqrestore(&h
->lock
, flags
);
431 return snprintf(buf
, 16 * 2 + 2,
432 "%02X%02X%02X%02X%02X%02X%02X%02X"
433 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
434 sn
[0], sn
[1], sn
[2], sn
[3],
435 sn
[4], sn
[5], sn
[6], sn
[7],
436 sn
[8], sn
[9], sn
[10], sn
[11],
437 sn
[12], sn
[13], sn
[14], sn
[15]);
440 static DEVICE_ATTR(raid_level
, S_IRUGO
, raid_level_show
, NULL
);
441 static DEVICE_ATTR(lunid
, S_IRUGO
, lunid_show
, NULL
);
442 static DEVICE_ATTR(unique_id
, S_IRUGO
, unique_id_show
, NULL
);
443 static DEVICE_ATTR(rescan
, S_IWUSR
, NULL
, host_store_rescan
);
444 static DEVICE_ATTR(firmware_revision
, S_IRUGO
,
445 host_show_firmware_revision
, NULL
);
446 static DEVICE_ATTR(commands_outstanding
, S_IRUGO
,
447 host_show_commands_outstanding
, NULL
);
448 static DEVICE_ATTR(transport_mode
, S_IRUGO
,
449 host_show_transport_mode
, NULL
);
450 static DEVICE_ATTR(resettable
, S_IRUGO
,
451 host_show_resettable
, NULL
);
453 static struct device_attribute
*hpsa_sdev_attrs
[] = {
454 &dev_attr_raid_level
,
460 static struct device_attribute
*hpsa_shost_attrs
[] = {
462 &dev_attr_firmware_revision
,
463 &dev_attr_commands_outstanding
,
464 &dev_attr_transport_mode
,
465 &dev_attr_resettable
,
469 static struct scsi_host_template hpsa_driver_template
= {
470 .module
= THIS_MODULE
,
473 .queuecommand
= hpsa_scsi_queue_command
,
474 .scan_start
= hpsa_scan_start
,
475 .scan_finished
= hpsa_scan_finished
,
476 .change_queue_depth
= hpsa_change_queue_depth
,
478 .use_clustering
= ENABLE_CLUSTERING
,
479 .eh_device_reset_handler
= hpsa_eh_device_reset_handler
,
481 .slave_alloc
= hpsa_slave_alloc
,
482 .slave_destroy
= hpsa_slave_destroy
,
484 .compat_ioctl
= hpsa_compat_ioctl
,
486 .sdev_attrs
= hpsa_sdev_attrs
,
487 .shost_attrs
= hpsa_shost_attrs
,
491 /* Enqueuing and dequeuing functions for cmdlists. */
492 static inline void addQ(struct list_head
*list
, struct CommandList
*c
)
494 list_add_tail(&c
->list
, list
);
497 static inline u32
next_command(struct ctlr_info
*h
)
501 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
502 return h
->access
.command_completed(h
);
504 if ((*(h
->reply_pool_head
) & 1) == (h
->reply_pool_wraparound
)) {
505 a
= *(h
->reply_pool_head
); /* Next cmd in ring buffer */
506 (h
->reply_pool_head
)++;
507 h
->commands_outstanding
--;
511 /* Check for wraparound */
512 if (h
->reply_pool_head
== (h
->reply_pool
+ h
->max_commands
)) {
513 h
->reply_pool_head
= h
->reply_pool
;
514 h
->reply_pool_wraparound
^= 1;
519 /* set_performant_mode: Modify the tag for cciss performant
520 * set bit 0 for pull model, bits 3-1 for block fetch
523 static void set_performant_mode(struct ctlr_info
*h
, struct CommandList
*c
)
525 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
526 c
->busaddr
|= 1 | (h
->blockFetchTable
[c
->Header
.SGList
] << 1);
529 static void enqueue_cmd_and_start_io(struct ctlr_info
*h
,
530 struct CommandList
*c
)
534 set_performant_mode(h
, c
);
535 spin_lock_irqsave(&h
->lock
, flags
);
539 spin_unlock_irqrestore(&h
->lock
, flags
);
542 static inline void removeQ(struct CommandList
*c
)
544 if (WARN_ON(list_empty(&c
->list
)))
546 list_del_init(&c
->list
);
549 static inline int is_hba_lunid(unsigned char scsi3addr
[])
551 return memcmp(scsi3addr
, RAID_CTLR_LUNID
, 8) == 0;
554 static inline int is_scsi_rev_5(struct ctlr_info
*h
)
556 if (!h
->hba_inquiry_data
)
558 if ((h
->hba_inquiry_data
[2] & 0x07) == 5)
563 static int hpsa_find_target_lun(struct ctlr_info
*h
,
564 unsigned char scsi3addr
[], int bus
, int *target
, int *lun
)
566 /* finds an unused bus, target, lun for a new physical device
567 * assumes h->devlock is held
570 DECLARE_BITMAP(lun_taken
, HPSA_MAX_SCSI_DEVS_PER_HBA
);
572 memset(&lun_taken
[0], 0, HPSA_MAX_SCSI_DEVS_PER_HBA
>> 3);
574 for (i
= 0; i
< h
->ndevices
; i
++) {
575 if (h
->dev
[i
]->bus
== bus
&& h
->dev
[i
]->target
!= -1)
576 set_bit(h
->dev
[i
]->target
, lun_taken
);
579 for (i
= 0; i
< HPSA_MAX_SCSI_DEVS_PER_HBA
; i
++) {
580 if (!test_bit(i
, lun_taken
)) {
591 /* Add an entry into h->dev[] array. */
592 static int hpsa_scsi_add_entry(struct ctlr_info
*h
, int hostno
,
593 struct hpsa_scsi_dev_t
*device
,
594 struct hpsa_scsi_dev_t
*added
[], int *nadded
)
596 /* assumes h->devlock is held */
599 unsigned char addr1
[8], addr2
[8];
600 struct hpsa_scsi_dev_t
*sd
;
602 if (n
>= HPSA_MAX_SCSI_DEVS_PER_HBA
) {
603 dev_err(&h
->pdev
->dev
, "too many devices, some will be "
608 /* physical devices do not have lun or target assigned until now. */
609 if (device
->lun
!= -1)
610 /* Logical device, lun is already assigned. */
613 /* If this device a non-zero lun of a multi-lun device
614 * byte 4 of the 8-byte LUN addr will contain the logical
615 * unit no, zero otherise.
617 if (device
->scsi3addr
[4] == 0) {
618 /* This is not a non-zero lun of a multi-lun device */
619 if (hpsa_find_target_lun(h
, device
->scsi3addr
,
620 device
->bus
, &device
->target
, &device
->lun
) != 0)
625 /* This is a non-zero lun of a multi-lun device.
626 * Search through our list and find the device which
627 * has the same 8 byte LUN address, excepting byte 4.
628 * Assign the same bus and target for this new LUN.
629 * Use the logical unit number from the firmware.
631 memcpy(addr1
, device
->scsi3addr
, 8);
633 for (i
= 0; i
< n
; i
++) {
635 memcpy(addr2
, sd
->scsi3addr
, 8);
637 /* differ only in byte 4? */
638 if (memcmp(addr1
, addr2
, 8) == 0) {
639 device
->bus
= sd
->bus
;
640 device
->target
= sd
->target
;
641 device
->lun
= device
->scsi3addr
[4];
645 if (device
->lun
== -1) {
646 dev_warn(&h
->pdev
->dev
, "physical device with no LUN=0,"
647 " suspect firmware bug or unsupported hardware "
656 added
[*nadded
] = device
;
659 /* initially, (before registering with scsi layer) we don't
660 * know our hostno and we don't want to print anything first
661 * time anyway (the scsi layer's inquiries will show that info)
663 /* if (hostno != -1) */
664 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d added.\n",
665 scsi_device_type(device
->devtype
), hostno
,
666 device
->bus
, device
->target
, device
->lun
);
670 /* Replace an entry from h->dev[] array. */
671 static void hpsa_scsi_replace_entry(struct ctlr_info
*h
, int hostno
,
672 int entry
, struct hpsa_scsi_dev_t
*new_entry
,
673 struct hpsa_scsi_dev_t
*added
[], int *nadded
,
674 struct hpsa_scsi_dev_t
*removed
[], int *nremoved
)
676 /* assumes h->devlock is held */
677 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_SCSI_DEVS_PER_HBA
);
678 removed
[*nremoved
] = h
->dev
[entry
];
682 * New physical devices won't have target/lun assigned yet
683 * so we need to preserve the values in the slot we are replacing.
685 if (new_entry
->target
== -1) {
686 new_entry
->target
= h
->dev
[entry
]->target
;
687 new_entry
->lun
= h
->dev
[entry
]->lun
;
690 h
->dev
[entry
] = new_entry
;
691 added
[*nadded
] = new_entry
;
693 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d changed.\n",
694 scsi_device_type(new_entry
->devtype
), hostno
, new_entry
->bus
,
695 new_entry
->target
, new_entry
->lun
);
698 /* Remove an entry from h->dev[] array. */
699 static void hpsa_scsi_remove_entry(struct ctlr_info
*h
, int hostno
, int entry
,
700 struct hpsa_scsi_dev_t
*removed
[], int *nremoved
)
702 /* assumes h->devlock is held */
704 struct hpsa_scsi_dev_t
*sd
;
706 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_SCSI_DEVS_PER_HBA
);
709 removed
[*nremoved
] = h
->dev
[entry
];
712 for (i
= entry
; i
< h
->ndevices
-1; i
++)
713 h
->dev
[i
] = h
->dev
[i
+1];
715 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d removed.\n",
716 scsi_device_type(sd
->devtype
), hostno
, sd
->bus
, sd
->target
,
720 #define SCSI3ADDR_EQ(a, b) ( \
721 (a)[7] == (b)[7] && \
722 (a)[6] == (b)[6] && \
723 (a)[5] == (b)[5] && \
724 (a)[4] == (b)[4] && \
725 (a)[3] == (b)[3] && \
726 (a)[2] == (b)[2] && \
727 (a)[1] == (b)[1] && \
730 static void fixup_botched_add(struct ctlr_info
*h
,
731 struct hpsa_scsi_dev_t
*added
)
733 /* called when scsi_add_device fails in order to re-adjust
734 * h->dev[] to match the mid layer's view.
739 spin_lock_irqsave(&h
->lock
, flags
);
740 for (i
= 0; i
< h
->ndevices
; i
++) {
741 if (h
->dev
[i
] == added
) {
742 for (j
= i
; j
< h
->ndevices
-1; j
++)
743 h
->dev
[j
] = h
->dev
[j
+1];
748 spin_unlock_irqrestore(&h
->lock
, flags
);
752 static inline int device_is_the_same(struct hpsa_scsi_dev_t
*dev1
,
753 struct hpsa_scsi_dev_t
*dev2
)
755 /* we compare everything except lun and target as these
756 * are not yet assigned. Compare parts likely
759 if (memcmp(dev1
->scsi3addr
, dev2
->scsi3addr
,
760 sizeof(dev1
->scsi3addr
)) != 0)
762 if (memcmp(dev1
->device_id
, dev2
->device_id
,
763 sizeof(dev1
->device_id
)) != 0)
765 if (memcmp(dev1
->model
, dev2
->model
, sizeof(dev1
->model
)) != 0)
767 if (memcmp(dev1
->vendor
, dev2
->vendor
, sizeof(dev1
->vendor
)) != 0)
769 if (dev1
->devtype
!= dev2
->devtype
)
771 if (dev1
->bus
!= dev2
->bus
)
776 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
777 * and return needle location in *index. If scsi3addr matches, but not
778 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
779 * location in *index. If needle not found, return DEVICE_NOT_FOUND.
781 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t
*needle
,
782 struct hpsa_scsi_dev_t
*haystack
[], int haystack_size
,
786 #define DEVICE_NOT_FOUND 0
787 #define DEVICE_CHANGED 1
788 #define DEVICE_SAME 2
789 for (i
= 0; i
< haystack_size
; i
++) {
790 if (haystack
[i
] == NULL
) /* previously removed. */
792 if (SCSI3ADDR_EQ(needle
->scsi3addr
, haystack
[i
]->scsi3addr
)) {
794 if (device_is_the_same(needle
, haystack
[i
]))
797 return DEVICE_CHANGED
;
801 return DEVICE_NOT_FOUND
;
804 static void adjust_hpsa_scsi_table(struct ctlr_info
*h
, int hostno
,
805 struct hpsa_scsi_dev_t
*sd
[], int nsds
)
807 /* sd contains scsi3 addresses and devtypes, and inquiry
808 * data. This function takes what's in sd to be the current
809 * reality and updates h->dev[] to reflect that reality.
811 int i
, entry
, device_change
, changes
= 0;
812 struct hpsa_scsi_dev_t
*csd
;
814 struct hpsa_scsi_dev_t
**added
, **removed
;
815 int nadded
, nremoved
;
816 struct Scsi_Host
*sh
= NULL
;
818 added
= kzalloc(sizeof(*added
) * HPSA_MAX_SCSI_DEVS_PER_HBA
,
820 removed
= kzalloc(sizeof(*removed
) * HPSA_MAX_SCSI_DEVS_PER_HBA
,
823 if (!added
|| !removed
) {
824 dev_warn(&h
->pdev
->dev
, "out of memory in "
825 "adjust_hpsa_scsi_table\n");
829 spin_lock_irqsave(&h
->devlock
, flags
);
831 /* find any devices in h->dev[] that are not in
832 * sd[] and remove them from h->dev[], and for any
833 * devices which have changed, remove the old device
834 * info and add the new device info.
839 while (i
< h
->ndevices
) {
841 device_change
= hpsa_scsi_find_entry(csd
, sd
, nsds
, &entry
);
842 if (device_change
== DEVICE_NOT_FOUND
) {
844 hpsa_scsi_remove_entry(h
, hostno
, i
,
846 continue; /* remove ^^^, hence i not incremented */
847 } else if (device_change
== DEVICE_CHANGED
) {
849 hpsa_scsi_replace_entry(h
, hostno
, i
, sd
[entry
],
850 added
, &nadded
, removed
, &nremoved
);
851 /* Set it to NULL to prevent it from being freed
852 * at the bottom of hpsa_update_scsi_devices()
859 /* Now, make sure every device listed in sd[] is also
860 * listed in h->dev[], adding them if they aren't found
863 for (i
= 0; i
< nsds
; i
++) {
864 if (!sd
[i
]) /* if already added above. */
866 device_change
= hpsa_scsi_find_entry(sd
[i
], h
->dev
,
867 h
->ndevices
, &entry
);
868 if (device_change
== DEVICE_NOT_FOUND
) {
870 if (hpsa_scsi_add_entry(h
, hostno
, sd
[i
],
871 added
, &nadded
) != 0)
873 sd
[i
] = NULL
; /* prevent from being freed later. */
874 } else if (device_change
== DEVICE_CHANGED
) {
875 /* should never happen... */
877 dev_warn(&h
->pdev
->dev
,
878 "device unexpectedly changed.\n");
879 /* but if it does happen, we just ignore that device */
882 spin_unlock_irqrestore(&h
->devlock
, flags
);
884 /* Don't notify scsi mid layer of any changes the first time through
885 * (or if there are no changes) scsi_scan_host will do it later the
886 * first time through.
888 if (hostno
== -1 || !changes
)
892 /* Notify scsi mid layer of any removed devices */
893 for (i
= 0; i
< nremoved
; i
++) {
894 struct scsi_device
*sdev
=
895 scsi_device_lookup(sh
, removed
[i
]->bus
,
896 removed
[i
]->target
, removed
[i
]->lun
);
898 scsi_remove_device(sdev
);
899 scsi_device_put(sdev
);
901 /* We don't expect to get here.
902 * future cmds to this device will get selection
903 * timeout as if the device was gone.
905 dev_warn(&h
->pdev
->dev
, "didn't find c%db%dt%dl%d "
906 " for removal.", hostno
, removed
[i
]->bus
,
907 removed
[i
]->target
, removed
[i
]->lun
);
913 /* Notify scsi mid layer of any added devices */
914 for (i
= 0; i
< nadded
; i
++) {
915 if (scsi_add_device(sh
, added
[i
]->bus
,
916 added
[i
]->target
, added
[i
]->lun
) == 0)
918 dev_warn(&h
->pdev
->dev
, "scsi_add_device c%db%dt%dl%d failed, "
919 "device not added.\n", hostno
, added
[i
]->bus
,
920 added
[i
]->target
, added
[i
]->lun
);
921 /* now we have to remove it from h->dev,
922 * since it didn't get added to scsi mid layer
924 fixup_botched_add(h
, added
[i
]);
933 * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t *
934 * Assume's h->devlock is held.
936 static struct hpsa_scsi_dev_t
*lookup_hpsa_scsi_dev(struct ctlr_info
*h
,
937 int bus
, int target
, int lun
)
940 struct hpsa_scsi_dev_t
*sd
;
942 for (i
= 0; i
< h
->ndevices
; i
++) {
944 if (sd
->bus
== bus
&& sd
->target
== target
&& sd
->lun
== lun
)
950 /* link sdev->hostdata to our per-device structure. */
951 static int hpsa_slave_alloc(struct scsi_device
*sdev
)
953 struct hpsa_scsi_dev_t
*sd
;
957 h
= sdev_to_hba(sdev
);
958 spin_lock_irqsave(&h
->devlock
, flags
);
959 sd
= lookup_hpsa_scsi_dev(h
, sdev_channel(sdev
),
960 sdev_id(sdev
), sdev
->lun
);
963 spin_unlock_irqrestore(&h
->devlock
, flags
);
967 static void hpsa_slave_destroy(struct scsi_device
*sdev
)
972 static void hpsa_free_sg_chain_blocks(struct ctlr_info
*h
)
978 for (i
= 0; i
< h
->nr_cmds
; i
++) {
979 kfree(h
->cmd_sg_list
[i
]);
980 h
->cmd_sg_list
[i
] = NULL
;
982 kfree(h
->cmd_sg_list
);
983 h
->cmd_sg_list
= NULL
;
986 static int hpsa_allocate_sg_chain_blocks(struct ctlr_info
*h
)
990 if (h
->chainsize
<= 0)
993 h
->cmd_sg_list
= kzalloc(sizeof(*h
->cmd_sg_list
) * h
->nr_cmds
,
997 for (i
= 0; i
< h
->nr_cmds
; i
++) {
998 h
->cmd_sg_list
[i
] = kmalloc(sizeof(*h
->cmd_sg_list
[i
]) *
999 h
->chainsize
, GFP_KERNEL
);
1000 if (!h
->cmd_sg_list
[i
])
1006 hpsa_free_sg_chain_blocks(h
);
1010 static void hpsa_map_sg_chain_block(struct ctlr_info
*h
,
1011 struct CommandList
*c
)
1013 struct SGDescriptor
*chain_sg
, *chain_block
;
1016 chain_sg
= &c
->SG
[h
->max_cmd_sg_entries
- 1];
1017 chain_block
= h
->cmd_sg_list
[c
->cmdindex
];
1018 chain_sg
->Ext
= HPSA_SG_CHAIN
;
1019 chain_sg
->Len
= sizeof(*chain_sg
) *
1020 (c
->Header
.SGTotal
- h
->max_cmd_sg_entries
);
1021 temp64
= pci_map_single(h
->pdev
, chain_block
, chain_sg
->Len
,
1023 chain_sg
->Addr
.lower
= (u32
) (temp64
& 0x0FFFFFFFFULL
);
1024 chain_sg
->Addr
.upper
= (u32
) ((temp64
>> 32) & 0x0FFFFFFFFULL
);
1027 static void hpsa_unmap_sg_chain_block(struct ctlr_info
*h
,
1028 struct CommandList
*c
)
1030 struct SGDescriptor
*chain_sg
;
1031 union u64bit temp64
;
1033 if (c
->Header
.SGTotal
<= h
->max_cmd_sg_entries
)
1036 chain_sg
= &c
->SG
[h
->max_cmd_sg_entries
- 1];
1037 temp64
.val32
.lower
= chain_sg
->Addr
.lower
;
1038 temp64
.val32
.upper
= chain_sg
->Addr
.upper
;
1039 pci_unmap_single(h
->pdev
, temp64
.val
, chain_sg
->Len
, PCI_DMA_TODEVICE
);
1042 static void complete_scsi_command(struct CommandList
*cp
)
1044 struct scsi_cmnd
*cmd
;
1045 struct ctlr_info
*h
;
1046 struct ErrorInfo
*ei
;
1048 unsigned char sense_key
;
1049 unsigned char asc
; /* additional sense code */
1050 unsigned char ascq
; /* additional sense code qualifier */
1051 unsigned long sense_data_size
;
1054 cmd
= (struct scsi_cmnd
*) cp
->scsi_cmd
;
1057 scsi_dma_unmap(cmd
); /* undo the DMA mappings */
1058 if (cp
->Header
.SGTotal
> h
->max_cmd_sg_entries
)
1059 hpsa_unmap_sg_chain_block(h
, cp
);
1061 cmd
->result
= (DID_OK
<< 16); /* host byte */
1062 cmd
->result
|= (COMMAND_COMPLETE
<< 8); /* msg byte */
1063 cmd
->result
|= ei
->ScsiStatus
;
1065 /* copy the sense data whether we need to or not. */
1066 if (SCSI_SENSE_BUFFERSIZE
< sizeof(ei
->SenseInfo
))
1067 sense_data_size
= SCSI_SENSE_BUFFERSIZE
;
1069 sense_data_size
= sizeof(ei
->SenseInfo
);
1070 if (ei
->SenseLen
< sense_data_size
)
1071 sense_data_size
= ei
->SenseLen
;
1073 memcpy(cmd
->sense_buffer
, ei
->SenseInfo
, sense_data_size
);
1074 scsi_set_resid(cmd
, ei
->ResidualCnt
);
1076 if (ei
->CommandStatus
== 0) {
1077 cmd
->scsi_done(cmd
);
1082 /* an error has occurred */
1083 switch (ei
->CommandStatus
) {
1085 case CMD_TARGET_STATUS
:
1086 if (ei
->ScsiStatus
) {
1088 sense_key
= 0xf & ei
->SenseInfo
[2];
1089 /* Get additional sense code */
1090 asc
= ei
->SenseInfo
[12];
1091 /* Get addition sense code qualifier */
1092 ascq
= ei
->SenseInfo
[13];
1095 if (ei
->ScsiStatus
== SAM_STAT_CHECK_CONDITION
) {
1096 if (check_for_unit_attention(h
, cp
)) {
1097 cmd
->result
= DID_SOFT_ERROR
<< 16;
1100 if (sense_key
== ILLEGAL_REQUEST
) {
1102 * SCSI REPORT_LUNS is commonly unsupported on
1103 * Smart Array. Suppress noisy complaint.
1105 if (cp
->Request
.CDB
[0] == REPORT_LUNS
)
1108 /* If ASC/ASCQ indicate Logical Unit
1109 * Not Supported condition,
1111 if ((asc
== 0x25) && (ascq
== 0x0)) {
1112 dev_warn(&h
->pdev
->dev
, "cp %p "
1113 "has check condition\n", cp
);
1118 if (sense_key
== NOT_READY
) {
1119 /* If Sense is Not Ready, Logical Unit
1120 * Not ready, Manual Intervention
1123 if ((asc
== 0x04) && (ascq
== 0x03)) {
1124 dev_warn(&h
->pdev
->dev
, "cp %p "
1125 "has check condition: unit "
1126 "not ready, manual "
1127 "intervention required\n", cp
);
1131 if (sense_key
== ABORTED_COMMAND
) {
1132 /* Aborted command is retryable */
1133 dev_warn(&h
->pdev
->dev
, "cp %p "
1134 "has check condition: aborted command: "
1135 "ASC: 0x%x, ASCQ: 0x%x\n",
1137 cmd
->result
= DID_SOFT_ERROR
<< 16;
1140 /* Must be some other type of check condition */
1141 dev_warn(&h
->pdev
->dev
, "cp %p has check condition: "
1143 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1144 "Returning result: 0x%x, "
1145 "cmd=[%02x %02x %02x %02x %02x "
1146 "%02x %02x %02x %02x %02x %02x "
1147 "%02x %02x %02x %02x %02x]\n",
1148 cp
, sense_key
, asc
, ascq
,
1150 cmd
->cmnd
[0], cmd
->cmnd
[1],
1151 cmd
->cmnd
[2], cmd
->cmnd
[3],
1152 cmd
->cmnd
[4], cmd
->cmnd
[5],
1153 cmd
->cmnd
[6], cmd
->cmnd
[7],
1154 cmd
->cmnd
[8], cmd
->cmnd
[9],
1155 cmd
->cmnd
[10], cmd
->cmnd
[11],
1156 cmd
->cmnd
[12], cmd
->cmnd
[13],
1157 cmd
->cmnd
[14], cmd
->cmnd
[15]);
1162 /* Problem was not a check condition
1163 * Pass it up to the upper layers...
1165 if (ei
->ScsiStatus
) {
1166 dev_warn(&h
->pdev
->dev
, "cp %p has status 0x%x "
1167 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1168 "Returning result: 0x%x\n",
1170 sense_key
, asc
, ascq
,
1172 } else { /* scsi status is zero??? How??? */
1173 dev_warn(&h
->pdev
->dev
, "cp %p SCSI status was 0. "
1174 "Returning no connection.\n", cp
),
1176 /* Ordinarily, this case should never happen,
1177 * but there is a bug in some released firmware
1178 * revisions that allows it to happen if, for
1179 * example, a 4100 backplane loses power and
1180 * the tape drive is in it. We assume that
1181 * it's a fatal error of some kind because we
1182 * can't show that it wasn't. We will make it
1183 * look like selection timeout since that is
1184 * the most common reason for this to occur,
1185 * and it's severe enough.
1188 cmd
->result
= DID_NO_CONNECT
<< 16;
1192 case CMD_DATA_UNDERRUN
: /* let mid layer handle it. */
1194 case CMD_DATA_OVERRUN
:
1195 dev_warn(&h
->pdev
->dev
, "cp %p has"
1196 " completed with data overrun "
1200 /* print_bytes(cp, sizeof(*cp), 1, 0);
1202 /* We get CMD_INVALID if you address a non-existent device
1203 * instead of a selection timeout (no response). You will
1204 * see this if you yank out a drive, then try to access it.
1205 * This is kind of a shame because it means that any other
1206 * CMD_INVALID (e.g. driver bug) will get interpreted as a
1207 * missing target. */
1208 cmd
->result
= DID_NO_CONNECT
<< 16;
1211 case CMD_PROTOCOL_ERR
:
1212 dev_warn(&h
->pdev
->dev
, "cp %p has "
1213 "protocol error \n", cp
);
1215 case CMD_HARDWARE_ERR
:
1216 cmd
->result
= DID_ERROR
<< 16;
1217 dev_warn(&h
->pdev
->dev
, "cp %p had hardware error\n", cp
);
1219 case CMD_CONNECTION_LOST
:
1220 cmd
->result
= DID_ERROR
<< 16;
1221 dev_warn(&h
->pdev
->dev
, "cp %p had connection lost\n", cp
);
1224 cmd
->result
= DID_ABORT
<< 16;
1225 dev_warn(&h
->pdev
->dev
, "cp %p was aborted with status 0x%x\n",
1226 cp
, ei
->ScsiStatus
);
1228 case CMD_ABORT_FAILED
:
1229 cmd
->result
= DID_ERROR
<< 16;
1230 dev_warn(&h
->pdev
->dev
, "cp %p reports abort failed\n", cp
);
1232 case CMD_UNSOLICITED_ABORT
:
1233 cmd
->result
= DID_RESET
<< 16;
1234 dev_warn(&h
->pdev
->dev
, "cp %p aborted do to an unsolicited "
1238 cmd
->result
= DID_TIME_OUT
<< 16;
1239 dev_warn(&h
->pdev
->dev
, "cp %p timedout\n", cp
);
1241 case CMD_UNABORTABLE
:
1242 cmd
->result
= DID_ERROR
<< 16;
1243 dev_warn(&h
->pdev
->dev
, "Command unabortable\n");
1246 cmd
->result
= DID_ERROR
<< 16;
1247 dev_warn(&h
->pdev
->dev
, "cp %p returned unknown status %x\n",
1248 cp
, ei
->CommandStatus
);
1250 cmd
->scsi_done(cmd
);
1254 static int hpsa_scsi_detect(struct ctlr_info
*h
)
1256 struct Scsi_Host
*sh
;
1259 sh
= scsi_host_alloc(&hpsa_driver_template
, sizeof(h
));
1266 sh
->max_channel
= 3;
1267 sh
->max_cmd_len
= MAX_COMMAND_SIZE
;
1268 sh
->max_lun
= HPSA_MAX_LUN
;
1269 sh
->max_id
= HPSA_MAX_LUN
;
1270 sh
->can_queue
= h
->nr_cmds
;
1271 sh
->cmd_per_lun
= h
->nr_cmds
;
1272 sh
->sg_tablesize
= h
->maxsgentries
;
1274 sh
->hostdata
[0] = (unsigned long) h
;
1275 sh
->irq
= h
->intr
[h
->intr_mode
];
1276 sh
->unique_id
= sh
->irq
;
1277 error
= scsi_add_host(sh
, &h
->pdev
->dev
);
1284 dev_err(&h
->pdev
->dev
, "hpsa_scsi_detect: scsi_add_host"
1285 " failed for controller %d\n", h
->ctlr
);
1289 dev_err(&h
->pdev
->dev
, "hpsa_scsi_detect: scsi_host_alloc"
1290 " failed for controller %d\n", h
->ctlr
);
1294 static void hpsa_pci_unmap(struct pci_dev
*pdev
,
1295 struct CommandList
*c
, int sg_used
, int data_direction
)
1298 union u64bit addr64
;
1300 for (i
= 0; i
< sg_used
; i
++) {
1301 addr64
.val32
.lower
= c
->SG
[i
].Addr
.lower
;
1302 addr64
.val32
.upper
= c
->SG
[i
].Addr
.upper
;
1303 pci_unmap_single(pdev
, (dma_addr_t
) addr64
.val
, c
->SG
[i
].Len
,
1308 static void hpsa_map_one(struct pci_dev
*pdev
,
1309 struct CommandList
*cp
,
1316 if (buflen
== 0 || data_direction
== PCI_DMA_NONE
) {
1317 cp
->Header
.SGList
= 0;
1318 cp
->Header
.SGTotal
= 0;
1322 addr64
= (u64
) pci_map_single(pdev
, buf
, buflen
, data_direction
);
1323 cp
->SG
[0].Addr
.lower
=
1324 (u32
) (addr64
& (u64
) 0x00000000FFFFFFFF);
1325 cp
->SG
[0].Addr
.upper
=
1326 (u32
) ((addr64
>> 32) & (u64
) 0x00000000FFFFFFFF);
1327 cp
->SG
[0].Len
= buflen
;
1328 cp
->Header
.SGList
= (u8
) 1; /* no. SGs contig in this cmd */
1329 cp
->Header
.SGTotal
= (u16
) 1; /* total sgs in this cmd list */
1332 static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info
*h
,
1333 struct CommandList
*c
)
1335 DECLARE_COMPLETION_ONSTACK(wait
);
1338 enqueue_cmd_and_start_io(h
, c
);
1339 wait_for_completion(&wait
);
1342 static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info
*h
,
1343 struct CommandList
*c
, int data_direction
)
1345 int retry_count
= 0;
1348 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
1349 hpsa_scsi_do_simple_cmd_core(h
, c
);
1351 } while (check_for_unit_attention(h
, c
) && retry_count
<= 3);
1352 hpsa_pci_unmap(h
->pdev
, c
, 1, data_direction
);
1355 static void hpsa_scsi_interpret_error(struct CommandList
*cp
)
1357 struct ErrorInfo
*ei
;
1358 struct device
*d
= &cp
->h
->pdev
->dev
;
1361 switch (ei
->CommandStatus
) {
1362 case CMD_TARGET_STATUS
:
1363 dev_warn(d
, "cmd %p has completed with errors\n", cp
);
1364 dev_warn(d
, "cmd %p has SCSI Status = %x\n", cp
,
1366 if (ei
->ScsiStatus
== 0)
1367 dev_warn(d
, "SCSI status is abnormally zero. "
1368 "(probably indicates selection timeout "
1369 "reported incorrectly due to a known "
1370 "firmware bug, circa July, 2001.)\n");
1372 case CMD_DATA_UNDERRUN
: /* let mid layer handle it. */
1373 dev_info(d
, "UNDERRUN\n");
1375 case CMD_DATA_OVERRUN
:
1376 dev_warn(d
, "cp %p has completed with data overrun\n", cp
);
1379 /* controller unfortunately reports SCSI passthru's
1380 * to non-existent targets as invalid commands.
1382 dev_warn(d
, "cp %p is reported invalid (probably means "
1383 "target device no longer present)\n", cp
);
1384 /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0);
1388 case CMD_PROTOCOL_ERR
:
1389 dev_warn(d
, "cp %p has protocol error \n", cp
);
1391 case CMD_HARDWARE_ERR
:
1392 /* cmd->result = DID_ERROR << 16; */
1393 dev_warn(d
, "cp %p had hardware error\n", cp
);
1395 case CMD_CONNECTION_LOST
:
1396 dev_warn(d
, "cp %p had connection lost\n", cp
);
1399 dev_warn(d
, "cp %p was aborted\n", cp
);
1401 case CMD_ABORT_FAILED
:
1402 dev_warn(d
, "cp %p reports abort failed\n", cp
);
1404 case CMD_UNSOLICITED_ABORT
:
1405 dev_warn(d
, "cp %p aborted due to an unsolicited abort\n", cp
);
1408 dev_warn(d
, "cp %p timed out\n", cp
);
1410 case CMD_UNABORTABLE
:
1411 dev_warn(d
, "Command unabortable\n");
1414 dev_warn(d
, "cp %p returned unknown status %x\n", cp
,
1419 static int hpsa_scsi_do_inquiry(struct ctlr_info
*h
, unsigned char *scsi3addr
,
1420 unsigned char page
, unsigned char *buf
,
1421 unsigned char bufsize
)
1424 struct CommandList
*c
;
1425 struct ErrorInfo
*ei
;
1427 c
= cmd_special_alloc(h
);
1429 if (c
== NULL
) { /* trouble... */
1430 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1434 fill_cmd(c
, HPSA_INQUIRY
, h
, buf
, bufsize
, page
, scsi3addr
, TYPE_CMD
);
1435 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_FROMDEVICE
);
1437 if (ei
->CommandStatus
!= 0 && ei
->CommandStatus
!= CMD_DATA_UNDERRUN
) {
1438 hpsa_scsi_interpret_error(c
);
1441 cmd_special_free(h
, c
);
1445 static int hpsa_send_reset(struct ctlr_info
*h
, unsigned char *scsi3addr
)
1448 struct CommandList
*c
;
1449 struct ErrorInfo
*ei
;
1451 c
= cmd_special_alloc(h
);
1453 if (c
== NULL
) { /* trouble... */
1454 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1458 fill_cmd(c
, HPSA_DEVICE_RESET_MSG
, h
, NULL
, 0, 0, scsi3addr
, TYPE_MSG
);
1459 hpsa_scsi_do_simple_cmd_core(h
, c
);
1460 /* no unmap needed here because no data xfer. */
1463 if (ei
->CommandStatus
!= 0) {
1464 hpsa_scsi_interpret_error(c
);
1467 cmd_special_free(h
, c
);
1471 static void hpsa_get_raid_level(struct ctlr_info
*h
,
1472 unsigned char *scsi3addr
, unsigned char *raid_level
)
1477 *raid_level
= RAID_UNKNOWN
;
1478 buf
= kzalloc(64, GFP_KERNEL
);
1481 rc
= hpsa_scsi_do_inquiry(h
, scsi3addr
, 0xC1, buf
, 64);
1483 *raid_level
= buf
[8];
1484 if (*raid_level
> RAID_UNKNOWN
)
1485 *raid_level
= RAID_UNKNOWN
;
1490 /* Get the device id from inquiry page 0x83 */
1491 static int hpsa_get_device_id(struct ctlr_info
*h
, unsigned char *scsi3addr
,
1492 unsigned char *device_id
, int buflen
)
1499 buf
= kzalloc(64, GFP_KERNEL
);
1502 rc
= hpsa_scsi_do_inquiry(h
, scsi3addr
, 0x83, buf
, 64);
1504 memcpy(device_id
, &buf
[8], buflen
);
1509 static int hpsa_scsi_do_report_luns(struct ctlr_info
*h
, int logical
,
1510 struct ReportLUNdata
*buf
, int bufsize
,
1511 int extended_response
)
1514 struct CommandList
*c
;
1515 unsigned char scsi3addr
[8];
1516 struct ErrorInfo
*ei
;
1518 c
= cmd_special_alloc(h
);
1519 if (c
== NULL
) { /* trouble... */
1520 dev_err(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1523 /* address the controller */
1524 memset(scsi3addr
, 0, sizeof(scsi3addr
));
1525 fill_cmd(c
, logical
? HPSA_REPORT_LOG
: HPSA_REPORT_PHYS
, h
,
1526 buf
, bufsize
, 0, scsi3addr
, TYPE_CMD
);
1527 if (extended_response
)
1528 c
->Request
.CDB
[1] = extended_response
;
1529 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_FROMDEVICE
);
1531 if (ei
->CommandStatus
!= 0 &&
1532 ei
->CommandStatus
!= CMD_DATA_UNDERRUN
) {
1533 hpsa_scsi_interpret_error(c
);
1536 cmd_special_free(h
, c
);
1540 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info
*h
,
1541 struct ReportLUNdata
*buf
,
1542 int bufsize
, int extended_response
)
1544 return hpsa_scsi_do_report_luns(h
, 0, buf
, bufsize
, extended_response
);
1547 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info
*h
,
1548 struct ReportLUNdata
*buf
, int bufsize
)
1550 return hpsa_scsi_do_report_luns(h
, 1, buf
, bufsize
, 0);
1553 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t
*device
,
1554 int bus
, int target
, int lun
)
1557 device
->target
= target
;
1561 static int hpsa_update_device_info(struct ctlr_info
*h
,
1562 unsigned char scsi3addr
[], struct hpsa_scsi_dev_t
*this_device
,
1563 unsigned char *is_OBDR_device
)
1566 #define OBDR_SIG_OFFSET 43
1567 #define OBDR_TAPE_SIG "$DR-10"
1568 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
1569 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
1571 unsigned char *inq_buff
;
1572 unsigned char *obdr_sig
;
1574 inq_buff
= kzalloc(OBDR_TAPE_INQ_SIZE
, GFP_KERNEL
);
1578 /* Do an inquiry to the device to see what it is. */
1579 if (hpsa_scsi_do_inquiry(h
, scsi3addr
, 0, inq_buff
,
1580 (unsigned char) OBDR_TAPE_INQ_SIZE
) != 0) {
1581 /* Inquiry failed (msg printed already) */
1582 dev_err(&h
->pdev
->dev
,
1583 "hpsa_update_device_info: inquiry failed\n");
1587 this_device
->devtype
= (inq_buff
[0] & 0x1f);
1588 memcpy(this_device
->scsi3addr
, scsi3addr
, 8);
1589 memcpy(this_device
->vendor
, &inq_buff
[8],
1590 sizeof(this_device
->vendor
));
1591 memcpy(this_device
->model
, &inq_buff
[16],
1592 sizeof(this_device
->model
));
1593 memset(this_device
->device_id
, 0,
1594 sizeof(this_device
->device_id
));
1595 hpsa_get_device_id(h
, scsi3addr
, this_device
->device_id
,
1596 sizeof(this_device
->device_id
));
1598 if (this_device
->devtype
== TYPE_DISK
&&
1599 is_logical_dev_addr_mode(scsi3addr
))
1600 hpsa_get_raid_level(h
, scsi3addr
, &this_device
->raid_level
);
1602 this_device
->raid_level
= RAID_UNKNOWN
;
1604 if (is_OBDR_device
) {
1605 /* See if this is a One-Button-Disaster-Recovery device
1606 * by looking for "$DR-10" at offset 43 in inquiry data.
1608 obdr_sig
= &inq_buff
[OBDR_SIG_OFFSET
];
1609 *is_OBDR_device
= (this_device
->devtype
== TYPE_ROM
&&
1610 strncmp(obdr_sig
, OBDR_TAPE_SIG
,
1611 OBDR_SIG_LEN
) == 0);
1622 static unsigned char *msa2xxx_model
[] = {
1631 static int is_msa2xxx(struct ctlr_info
*h
, struct hpsa_scsi_dev_t
*device
)
1635 for (i
= 0; msa2xxx_model
[i
]; i
++)
1636 if (strncmp(device
->model
, msa2xxx_model
[i
],
1637 strlen(msa2xxx_model
[i
])) == 0)
1642 /* Helper function to assign bus, target, lun mapping of devices.
1643 * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical
1644 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
1645 * Logical drive target and lun are assigned at this time, but
1646 * physical device lun and target assignment are deferred (assigned
1647 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
1649 static void figure_bus_target_lun(struct ctlr_info
*h
,
1650 u8
*lunaddrbytes
, int *bus
, int *target
, int *lun
,
1651 struct hpsa_scsi_dev_t
*device
)
1655 if (is_logical_dev_addr_mode(lunaddrbytes
)) {
1656 /* logical device */
1657 lunid
= le32_to_cpu(*((__le32
*) lunaddrbytes
));
1658 if (is_msa2xxx(h
, device
)) {
1659 /* msa2xxx way, put logicals on bus 1
1660 * and match target/lun numbers box
1664 *target
= (lunid
>> 16) & 0x3fff;
1665 *lun
= lunid
& 0x00ff;
1667 if (likely(is_scsi_rev_5(h
))) {
1668 /* All current smart arrays (circa 2011) */
1671 *lun
= (lunid
& 0x3fff) + 1;
1673 /* Traditional old smart array way. */
1675 *target
= lunid
& 0x3fff;
1680 /* physical device */
1681 if (is_hba_lunid(lunaddrbytes
))
1682 if (unlikely(is_scsi_rev_5(h
))) {
1683 *bus
= 0; /* put p1210m ctlr at 0,0,0 */
1688 *bus
= 3; /* traditional smartarray */
1690 *bus
= 2; /* physical disk */
1692 *lun
= -1; /* we will fill these in later. */
1697 * If there is no lun 0 on a target, linux won't find any devices.
1698 * For the MSA2xxx boxes, we have to manually detect the enclosure
1699 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
1700 * it for some reason. *tmpdevice is the target we're adding,
1701 * this_device is a pointer into the current element of currentsd[]
1702 * that we're building up in update_scsi_devices(), below.
1703 * lunzerobits is a bitmap that tracks which targets already have a
1705 * Returns 1 if an enclosure was added, 0 if not.
1707 static int add_msa2xxx_enclosure_device(struct ctlr_info
*h
,
1708 struct hpsa_scsi_dev_t
*tmpdevice
,
1709 struct hpsa_scsi_dev_t
*this_device
, u8
*lunaddrbytes
,
1710 int bus
, int target
, int lun
, unsigned long lunzerobits
[],
1711 int *nmsa2xxx_enclosures
)
1713 unsigned char scsi3addr
[8];
1715 if (test_bit(target
, lunzerobits
))
1716 return 0; /* There is already a lun 0 on this target. */
1718 if (!is_logical_dev_addr_mode(lunaddrbytes
))
1719 return 0; /* It's the logical targets that may lack lun 0. */
1721 if (!is_msa2xxx(h
, tmpdevice
))
1722 return 0; /* It's only the MSA2xxx that have this problem. */
1724 if (lun
== 0) /* if lun is 0, then obviously we have a lun 0. */
1727 memset(scsi3addr
, 0, 8);
1728 scsi3addr
[3] = target
;
1729 if (is_hba_lunid(scsi3addr
))
1730 return 0; /* Don't add the RAID controller here. */
1732 if (is_scsi_rev_5(h
))
1733 return 0; /* p1210m doesn't need to do this. */
1735 #define MAX_MSA2XXX_ENCLOSURES 32
1736 if (*nmsa2xxx_enclosures
>= MAX_MSA2XXX_ENCLOSURES
) {
1737 dev_warn(&h
->pdev
->dev
, "Maximum number of MSA2XXX "
1738 "enclosures exceeded. Check your hardware "
1743 if (hpsa_update_device_info(h
, scsi3addr
, this_device
, NULL
))
1745 (*nmsa2xxx_enclosures
)++;
1746 hpsa_set_bus_target_lun(this_device
, bus
, target
, 0);
1747 set_bit(target
, lunzerobits
);
1752 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
1753 * logdev. The number of luns in physdev and logdev are returned in
1754 * *nphysicals and *nlogicals, respectively.
1755 * Returns 0 on success, -1 otherwise.
1757 static int hpsa_gather_lun_info(struct ctlr_info
*h
,
1759 struct ReportLUNdata
*physdev
, u32
*nphysicals
,
1760 struct ReportLUNdata
*logdev
, u32
*nlogicals
)
1762 if (hpsa_scsi_do_report_phys_luns(h
, physdev
, reportlunsize
, 0)) {
1763 dev_err(&h
->pdev
->dev
, "report physical LUNs failed.\n");
1766 *nphysicals
= be32_to_cpu(*((__be32
*)physdev
->LUNListLength
)) / 8;
1767 if (*nphysicals
> HPSA_MAX_PHYS_LUN
) {
1768 dev_warn(&h
->pdev
->dev
, "maximum physical LUNs (%d) exceeded."
1769 " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN
,
1770 *nphysicals
- HPSA_MAX_PHYS_LUN
);
1771 *nphysicals
= HPSA_MAX_PHYS_LUN
;
1773 if (hpsa_scsi_do_report_log_luns(h
, logdev
, reportlunsize
)) {
1774 dev_err(&h
->pdev
->dev
, "report logical LUNs failed.\n");
1777 *nlogicals
= be32_to_cpu(*((__be32
*) logdev
->LUNListLength
)) / 8;
1778 /* Reject Logicals in excess of our max capability. */
1779 if (*nlogicals
> HPSA_MAX_LUN
) {
1780 dev_warn(&h
->pdev
->dev
,
1781 "maximum logical LUNs (%d) exceeded. "
1782 "%d LUNs ignored.\n", HPSA_MAX_LUN
,
1783 *nlogicals
- HPSA_MAX_LUN
);
1784 *nlogicals
= HPSA_MAX_LUN
;
1786 if (*nlogicals
+ *nphysicals
> HPSA_MAX_PHYS_LUN
) {
1787 dev_warn(&h
->pdev
->dev
,
1788 "maximum logical + physical LUNs (%d) exceeded. "
1789 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN
,
1790 *nphysicals
+ *nlogicals
- HPSA_MAX_PHYS_LUN
);
1791 *nlogicals
= HPSA_MAX_PHYS_LUN
- *nphysicals
;
1796 u8
*figure_lunaddrbytes(struct ctlr_info
*h
, int raid_ctlr_position
, int i
,
1797 int nphysicals
, int nlogicals
, struct ReportLUNdata
*physdev_list
,
1798 struct ReportLUNdata
*logdev_list
)
1800 /* Helper function, figure out where the LUN ID info is coming from
1801 * given index i, lists of physical and logical devices, where in
1802 * the list the raid controller is supposed to appear (first or last)
1805 int logicals_start
= nphysicals
+ (raid_ctlr_position
== 0);
1806 int last_device
= nphysicals
+ nlogicals
+ (raid_ctlr_position
== 0);
1808 if (i
== raid_ctlr_position
)
1809 return RAID_CTLR_LUNID
;
1811 if (i
< logicals_start
)
1812 return &physdev_list
->LUN
[i
- (raid_ctlr_position
== 0)][0];
1814 if (i
< last_device
)
1815 return &logdev_list
->LUN
[i
- nphysicals
-
1816 (raid_ctlr_position
== 0)][0];
1821 static void hpsa_update_scsi_devices(struct ctlr_info
*h
, int hostno
)
1823 /* the idea here is we could get notified
1824 * that some devices have changed, so we do a report
1825 * physical luns and report logical luns cmd, and adjust
1826 * our list of devices accordingly.
1828 * The scsi3addr's of devices won't change so long as the
1829 * adapter is not reset. That means we can rescan and
1830 * tell which devices we already know about, vs. new
1831 * devices, vs. disappearing devices.
1833 struct ReportLUNdata
*physdev_list
= NULL
;
1834 struct ReportLUNdata
*logdev_list
= NULL
;
1837 u32 ndev_allocated
= 0;
1838 struct hpsa_scsi_dev_t
**currentsd
, *this_device
, *tmpdevice
;
1840 int reportlunsize
= sizeof(*physdev_list
) + HPSA_MAX_PHYS_LUN
* 8;
1841 int i
, nmsa2xxx_enclosures
, ndevs_to_allocate
;
1842 int bus
, target
, lun
;
1843 int raid_ctlr_position
;
1844 DECLARE_BITMAP(lunzerobits
, HPSA_MAX_TARGETS_PER_CTLR
);
1846 currentsd
= kzalloc(sizeof(*currentsd
) * HPSA_MAX_SCSI_DEVS_PER_HBA
,
1848 physdev_list
= kzalloc(reportlunsize
, GFP_KERNEL
);
1849 logdev_list
= kzalloc(reportlunsize
, GFP_KERNEL
);
1850 tmpdevice
= kzalloc(sizeof(*tmpdevice
), GFP_KERNEL
);
1852 if (!currentsd
|| !physdev_list
|| !logdev_list
|| !tmpdevice
) {
1853 dev_err(&h
->pdev
->dev
, "out of memory\n");
1856 memset(lunzerobits
, 0, sizeof(lunzerobits
));
1858 if (hpsa_gather_lun_info(h
, reportlunsize
, physdev_list
, &nphysicals
,
1859 logdev_list
, &nlogicals
))
1862 /* We might see up to 32 MSA2xxx enclosures, actually 8 of them
1863 * but each of them 4 times through different paths. The plus 1
1864 * is for the RAID controller.
1866 ndevs_to_allocate
= nphysicals
+ nlogicals
+ MAX_MSA2XXX_ENCLOSURES
+ 1;
1868 /* Allocate the per device structures */
1869 for (i
= 0; i
< ndevs_to_allocate
; i
++) {
1870 currentsd
[i
] = kzalloc(sizeof(*currentsd
[i
]), GFP_KERNEL
);
1871 if (!currentsd
[i
]) {
1872 dev_warn(&h
->pdev
->dev
, "out of memory at %s:%d\n",
1873 __FILE__
, __LINE__
);
1879 if (unlikely(is_scsi_rev_5(h
)))
1880 raid_ctlr_position
= 0;
1882 raid_ctlr_position
= nphysicals
+ nlogicals
;
1884 /* adjust our table of devices */
1885 nmsa2xxx_enclosures
= 0;
1886 for (i
= 0; i
< nphysicals
+ nlogicals
+ 1; i
++) {
1887 u8
*lunaddrbytes
, is_OBDR
= 0;
1889 /* Figure out where the LUN ID info is coming from */
1890 lunaddrbytes
= figure_lunaddrbytes(h
, raid_ctlr_position
,
1891 i
, nphysicals
, nlogicals
, physdev_list
, logdev_list
);
1892 /* skip masked physical devices. */
1893 if (lunaddrbytes
[3] & 0xC0 &&
1894 i
< nphysicals
+ (raid_ctlr_position
== 0))
1897 /* Get device type, vendor, model, device id */
1898 if (hpsa_update_device_info(h
, lunaddrbytes
, tmpdevice
,
1900 continue; /* skip it if we can't talk to it. */
1901 figure_bus_target_lun(h
, lunaddrbytes
, &bus
, &target
, &lun
,
1903 this_device
= currentsd
[ncurrent
];
1906 * For the msa2xxx boxes, we have to insert a LUN 0 which
1907 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
1908 * is nonetheless an enclosure device there. We have to
1909 * present that otherwise linux won't find anything if
1910 * there is no lun 0.
1912 if (add_msa2xxx_enclosure_device(h
, tmpdevice
, this_device
,
1913 lunaddrbytes
, bus
, target
, lun
, lunzerobits
,
1914 &nmsa2xxx_enclosures
)) {
1916 this_device
= currentsd
[ncurrent
];
1919 *this_device
= *tmpdevice
;
1920 hpsa_set_bus_target_lun(this_device
, bus
, target
, lun
);
1922 switch (this_device
->devtype
) {
1924 /* We don't *really* support actual CD-ROM devices,
1925 * just "One Button Disaster Recovery" tape drive
1926 * which temporarily pretends to be a CD-ROM drive.
1927 * So we check that the device is really an OBDR tape
1928 * device by checking for "$DR-10" in bytes 43-48 of
1940 case TYPE_MEDIUM_CHANGER
:
1944 /* Only present the Smartarray HBA as a RAID controller.
1945 * If it's a RAID controller other than the HBA itself
1946 * (an external RAID controller, MSA500 or similar)
1949 if (!is_hba_lunid(lunaddrbytes
))
1956 if (ncurrent
>= HPSA_MAX_SCSI_DEVS_PER_HBA
)
1959 adjust_hpsa_scsi_table(h
, hostno
, currentsd
, ncurrent
);
1962 for (i
= 0; i
< ndev_allocated
; i
++)
1963 kfree(currentsd
[i
]);
1965 kfree(physdev_list
);
1969 /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
1970 * dma mapping and fills in the scatter gather entries of the
1973 static int hpsa_scatter_gather(struct ctlr_info
*h
,
1974 struct CommandList
*cp
,
1975 struct scsi_cmnd
*cmd
)
1978 struct scatterlist
*sg
;
1980 int use_sg
, i
, sg_index
, chained
;
1981 struct SGDescriptor
*curr_sg
;
1983 BUG_ON(scsi_sg_count(cmd
) > h
->maxsgentries
);
1985 use_sg
= scsi_dma_map(cmd
);
1990 goto sglist_finished
;
1995 scsi_for_each_sg(cmd
, sg
, use_sg
, i
) {
1996 if (i
== h
->max_cmd_sg_entries
- 1 &&
1997 use_sg
> h
->max_cmd_sg_entries
) {
1999 curr_sg
= h
->cmd_sg_list
[cp
->cmdindex
];
2002 addr64
= (u64
) sg_dma_address(sg
);
2003 len
= sg_dma_len(sg
);
2004 curr_sg
->Addr
.lower
= (u32
) (addr64
& 0x0FFFFFFFFULL
);
2005 curr_sg
->Addr
.upper
= (u32
) ((addr64
>> 32) & 0x0FFFFFFFFULL
);
2007 curr_sg
->Ext
= 0; /* we are not chaining */
2011 if (use_sg
+ chained
> h
->maxSG
)
2012 h
->maxSG
= use_sg
+ chained
;
2015 cp
->Header
.SGList
= h
->max_cmd_sg_entries
;
2016 cp
->Header
.SGTotal
= (u16
) (use_sg
+ 1);
2017 hpsa_map_sg_chain_block(h
, cp
);
2023 cp
->Header
.SGList
= (u8
) use_sg
; /* no. SGs contig in this cmd */
2024 cp
->Header
.SGTotal
= (u16
) use_sg
; /* total sgs in this cmd list */
2029 static int hpsa_scsi_queue_command_lck(struct scsi_cmnd
*cmd
,
2030 void (*done
)(struct scsi_cmnd
*))
2032 struct ctlr_info
*h
;
2033 struct hpsa_scsi_dev_t
*dev
;
2034 unsigned char scsi3addr
[8];
2035 struct CommandList
*c
;
2036 unsigned long flags
;
2038 /* Get the ptr to our adapter structure out of cmd->host. */
2039 h
= sdev_to_hba(cmd
->device
);
2040 dev
= cmd
->device
->hostdata
;
2042 cmd
->result
= DID_NO_CONNECT
<< 16;
2046 memcpy(scsi3addr
, dev
->scsi3addr
, sizeof(scsi3addr
));
2048 /* Need a lock as this is being allocated from the pool */
2049 spin_lock_irqsave(&h
->lock
, flags
);
2051 spin_unlock_irqrestore(&h
->lock
, flags
);
2052 if (c
== NULL
) { /* trouble... */
2053 dev_err(&h
->pdev
->dev
, "cmd_alloc returned NULL!\n");
2054 return SCSI_MLQUEUE_HOST_BUSY
;
2057 /* Fill in the command list header */
2059 cmd
->scsi_done
= done
; /* save this for use by completion code */
2061 /* save c in case we have to abort it */
2062 cmd
->host_scribble
= (unsigned char *) c
;
2064 c
->cmd_type
= CMD_SCSI
;
2066 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
2067 memcpy(&c
->Header
.LUN
.LunAddrBytes
[0], &scsi3addr
[0], 8);
2068 c
->Header
.Tag
.lower
= (c
->cmdindex
<< DIRECT_LOOKUP_SHIFT
);
2069 c
->Header
.Tag
.lower
|= DIRECT_LOOKUP_BIT
;
2071 /* Fill in the request block... */
2073 c
->Request
.Timeout
= 0;
2074 memset(c
->Request
.CDB
, 0, sizeof(c
->Request
.CDB
));
2075 BUG_ON(cmd
->cmd_len
> sizeof(c
->Request
.CDB
));
2076 c
->Request
.CDBLen
= cmd
->cmd_len
;
2077 memcpy(c
->Request
.CDB
, cmd
->cmnd
, cmd
->cmd_len
);
2078 c
->Request
.Type
.Type
= TYPE_CMD
;
2079 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2080 switch (cmd
->sc_data_direction
) {
2082 c
->Request
.Type
.Direction
= XFER_WRITE
;
2084 case DMA_FROM_DEVICE
:
2085 c
->Request
.Type
.Direction
= XFER_READ
;
2088 c
->Request
.Type
.Direction
= XFER_NONE
;
2090 case DMA_BIDIRECTIONAL
:
2091 /* This can happen if a buggy application does a scsi passthru
2092 * and sets both inlen and outlen to non-zero. ( see
2093 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
2096 c
->Request
.Type
.Direction
= XFER_RSVD
;
2097 /* This is technically wrong, and hpsa controllers should
2098 * reject it with CMD_INVALID, which is the most correct
2099 * response, but non-fibre backends appear to let it
2100 * slide by, and give the same results as if this field
2101 * were set correctly. Either way is acceptable for
2102 * our purposes here.
2108 dev_err(&h
->pdev
->dev
, "unknown data direction: %d\n",
2109 cmd
->sc_data_direction
);
2114 if (hpsa_scatter_gather(h
, c
, cmd
) < 0) { /* Fill SG list */
2116 return SCSI_MLQUEUE_HOST_BUSY
;
2118 enqueue_cmd_and_start_io(h
, c
);
2119 /* the cmd'll come back via intr handler in complete_scsi_command() */
2123 static DEF_SCSI_QCMD(hpsa_scsi_queue_command
)
2125 static void hpsa_scan_start(struct Scsi_Host
*sh
)
2127 struct ctlr_info
*h
= shost_to_hba(sh
);
2128 unsigned long flags
;
2130 /* wait until any scan already in progress is finished. */
2132 spin_lock_irqsave(&h
->scan_lock
, flags
);
2133 if (h
->scan_finished
)
2135 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2136 wait_event(h
->scan_wait_queue
, h
->scan_finished
);
2137 /* Note: We don't need to worry about a race between this
2138 * thread and driver unload because the midlayer will
2139 * have incremented the reference count, so unload won't
2140 * happen if we're in here.
2143 h
->scan_finished
= 0; /* mark scan as in progress */
2144 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2146 hpsa_update_scsi_devices(h
, h
->scsi_host
->host_no
);
2148 spin_lock_irqsave(&h
->scan_lock
, flags
);
2149 h
->scan_finished
= 1; /* mark scan as finished. */
2150 wake_up_all(&h
->scan_wait_queue
);
2151 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2154 static int hpsa_scan_finished(struct Scsi_Host
*sh
,
2155 unsigned long elapsed_time
)
2157 struct ctlr_info
*h
= shost_to_hba(sh
);
2158 unsigned long flags
;
2161 spin_lock_irqsave(&h
->scan_lock
, flags
);
2162 finished
= h
->scan_finished
;
2163 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2167 static int hpsa_change_queue_depth(struct scsi_device
*sdev
,
2168 int qdepth
, int reason
)
2170 struct ctlr_info
*h
= sdev_to_hba(sdev
);
2172 if (reason
!= SCSI_QDEPTH_DEFAULT
)
2178 if (qdepth
> h
->nr_cmds
)
2179 qdepth
= h
->nr_cmds
;
2180 scsi_adjust_queue_depth(sdev
, scsi_get_tag_type(sdev
), qdepth
);
2181 return sdev
->queue_depth
;
2184 static void hpsa_unregister_scsi(struct ctlr_info
*h
)
2186 /* we are being forcibly unloaded, and may not refuse. */
2187 scsi_remove_host(h
->scsi_host
);
2188 scsi_host_put(h
->scsi_host
);
2189 h
->scsi_host
= NULL
;
2192 static int hpsa_register_scsi(struct ctlr_info
*h
)
2196 rc
= hpsa_scsi_detect(h
);
2198 dev_err(&h
->pdev
->dev
, "hpsa_register_scsi: failed"
2199 " hpsa_scsi_detect(), rc is %d\n", rc
);
2203 static int wait_for_device_to_become_ready(struct ctlr_info
*h
,
2204 unsigned char lunaddr
[])
2208 int waittime
= 1; /* seconds */
2209 struct CommandList
*c
;
2211 c
= cmd_special_alloc(h
);
2213 dev_warn(&h
->pdev
->dev
, "out of memory in "
2214 "wait_for_device_to_become_ready.\n");
2218 /* Send test unit ready until device ready, or give up. */
2219 while (count
< HPSA_TUR_RETRY_LIMIT
) {
2221 /* Wait for a bit. do this first, because if we send
2222 * the TUR right away, the reset will just abort it.
2224 msleep(1000 * waittime
);
2227 /* Increase wait time with each try, up to a point. */
2228 if (waittime
< HPSA_MAX_WAIT_INTERVAL_SECS
)
2229 waittime
= waittime
* 2;
2231 /* Send the Test Unit Ready */
2232 fill_cmd(c
, TEST_UNIT_READY
, h
, NULL
, 0, 0, lunaddr
, TYPE_CMD
);
2233 hpsa_scsi_do_simple_cmd_core(h
, c
);
2234 /* no unmap needed here because no data xfer. */
2236 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2239 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
2240 c
->err_info
->ScsiStatus
== SAM_STAT_CHECK_CONDITION
&&
2241 (c
->err_info
->SenseInfo
[2] == NO_SENSE
||
2242 c
->err_info
->SenseInfo
[2] == UNIT_ATTENTION
))
2245 dev_warn(&h
->pdev
->dev
, "waiting %d secs "
2246 "for device to become ready.\n", waittime
);
2247 rc
= 1; /* device not ready. */
2251 dev_warn(&h
->pdev
->dev
, "giving up on device.\n");
2253 dev_warn(&h
->pdev
->dev
, "device is ready.\n");
2255 cmd_special_free(h
, c
);
2259 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
2260 * complaining. Doing a host- or bus-reset can't do anything good here.
2262 static int hpsa_eh_device_reset_handler(struct scsi_cmnd
*scsicmd
)
2265 struct ctlr_info
*h
;
2266 struct hpsa_scsi_dev_t
*dev
;
2268 /* find the controller to which the command to be aborted was sent */
2269 h
= sdev_to_hba(scsicmd
->device
);
2270 if (h
== NULL
) /* paranoia */
2272 dev
= scsicmd
->device
->hostdata
;
2274 dev_err(&h
->pdev
->dev
, "hpsa_eh_device_reset_handler: "
2275 "device lookup failed.\n");
2278 dev_warn(&h
->pdev
->dev
, "resetting device %d:%d:%d:%d\n",
2279 h
->scsi_host
->host_no
, dev
->bus
, dev
->target
, dev
->lun
);
2280 /* send a reset to the SCSI LUN which the command was sent to */
2281 rc
= hpsa_send_reset(h
, dev
->scsi3addr
);
2282 if (rc
== 0 && wait_for_device_to_become_ready(h
, dev
->scsi3addr
) == 0)
2285 dev_warn(&h
->pdev
->dev
, "resetting device failed.\n");
2290 * For operations that cannot sleep, a command block is allocated at init,
2291 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
2292 * which ones are free or in use. Lock must be held when calling this.
2293 * cmd_free() is the complement.
2295 static struct CommandList
*cmd_alloc(struct ctlr_info
*h
)
2297 struct CommandList
*c
;
2299 union u64bit temp64
;
2300 dma_addr_t cmd_dma_handle
, err_dma_handle
;
2303 i
= find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
);
2304 if (i
== h
->nr_cmds
)
2306 } while (test_and_set_bit
2307 (i
& (BITS_PER_LONG
- 1),
2308 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
)) != 0);
2309 c
= h
->cmd_pool
+ i
;
2310 memset(c
, 0, sizeof(*c
));
2311 cmd_dma_handle
= h
->cmd_pool_dhandle
2313 c
->err_info
= h
->errinfo_pool
+ i
;
2314 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
2315 err_dma_handle
= h
->errinfo_pool_dhandle
2316 + i
* sizeof(*c
->err_info
);
2321 INIT_LIST_HEAD(&c
->list
);
2322 c
->busaddr
= (u32
) cmd_dma_handle
;
2323 temp64
.val
= (u64
) err_dma_handle
;
2324 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
2325 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
2326 c
->ErrDesc
.Len
= sizeof(*c
->err_info
);
2332 /* For operations that can wait for kmalloc to possibly sleep,
2333 * this routine can be called. Lock need not be held to call
2334 * cmd_special_alloc. cmd_special_free() is the complement.
2336 static struct CommandList
*cmd_special_alloc(struct ctlr_info
*h
)
2338 struct CommandList
*c
;
2339 union u64bit temp64
;
2340 dma_addr_t cmd_dma_handle
, err_dma_handle
;
2342 c
= pci_alloc_consistent(h
->pdev
, sizeof(*c
), &cmd_dma_handle
);
2345 memset(c
, 0, sizeof(*c
));
2349 c
->err_info
= pci_alloc_consistent(h
->pdev
, sizeof(*c
->err_info
),
2352 if (c
->err_info
== NULL
) {
2353 pci_free_consistent(h
->pdev
,
2354 sizeof(*c
), c
, cmd_dma_handle
);
2357 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
2359 INIT_LIST_HEAD(&c
->list
);
2360 c
->busaddr
= (u32
) cmd_dma_handle
;
2361 temp64
.val
= (u64
) err_dma_handle
;
2362 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
2363 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
2364 c
->ErrDesc
.Len
= sizeof(*c
->err_info
);
2370 static void cmd_free(struct ctlr_info
*h
, struct CommandList
*c
)
2374 i
= c
- h
->cmd_pool
;
2375 clear_bit(i
& (BITS_PER_LONG
- 1),
2376 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
));
2380 static void cmd_special_free(struct ctlr_info
*h
, struct CommandList
*c
)
2382 union u64bit temp64
;
2384 temp64
.val32
.lower
= c
->ErrDesc
.Addr
.lower
;
2385 temp64
.val32
.upper
= c
->ErrDesc
.Addr
.upper
;
2386 pci_free_consistent(h
->pdev
, sizeof(*c
->err_info
),
2387 c
->err_info
, (dma_addr_t
) temp64
.val
);
2388 pci_free_consistent(h
->pdev
, sizeof(*c
),
2389 c
, (dma_addr_t
) (c
->busaddr
& DIRECT_LOOKUP_MASK
));
2392 #ifdef CONFIG_COMPAT
2394 static int hpsa_ioctl32_passthru(struct scsi_device
*dev
, int cmd
, void *arg
)
2396 IOCTL32_Command_struct __user
*arg32
=
2397 (IOCTL32_Command_struct __user
*) arg
;
2398 IOCTL_Command_struct arg64
;
2399 IOCTL_Command_struct __user
*p
= compat_alloc_user_space(sizeof(arg64
));
2403 memset(&arg64
, 0, sizeof(arg64
));
2405 err
|= copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
2406 sizeof(arg64
.LUN_info
));
2407 err
|= copy_from_user(&arg64
.Request
, &arg32
->Request
,
2408 sizeof(arg64
.Request
));
2409 err
|= copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
2410 sizeof(arg64
.error_info
));
2411 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
2412 err
|= get_user(cp
, &arg32
->buf
);
2413 arg64
.buf
= compat_ptr(cp
);
2414 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
2419 err
= hpsa_ioctl(dev
, CCISS_PASSTHRU
, (void *)p
);
2422 err
|= copy_in_user(&arg32
->error_info
, &p
->error_info
,
2423 sizeof(arg32
->error_info
));
2429 static int hpsa_ioctl32_big_passthru(struct scsi_device
*dev
,
2432 BIG_IOCTL32_Command_struct __user
*arg32
=
2433 (BIG_IOCTL32_Command_struct __user
*) arg
;
2434 BIG_IOCTL_Command_struct arg64
;
2435 BIG_IOCTL_Command_struct __user
*p
=
2436 compat_alloc_user_space(sizeof(arg64
));
2440 memset(&arg64
, 0, sizeof(arg64
));
2442 err
|= copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
2443 sizeof(arg64
.LUN_info
));
2444 err
|= copy_from_user(&arg64
.Request
, &arg32
->Request
,
2445 sizeof(arg64
.Request
));
2446 err
|= copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
2447 sizeof(arg64
.error_info
));
2448 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
2449 err
|= get_user(arg64
.malloc_size
, &arg32
->malloc_size
);
2450 err
|= get_user(cp
, &arg32
->buf
);
2451 arg64
.buf
= compat_ptr(cp
);
2452 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
2457 err
= hpsa_ioctl(dev
, CCISS_BIG_PASSTHRU
, (void *)p
);
2460 err
|= copy_in_user(&arg32
->error_info
, &p
->error_info
,
2461 sizeof(arg32
->error_info
));
2467 static int hpsa_compat_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
)
2470 case CCISS_GETPCIINFO
:
2471 case CCISS_GETINTINFO
:
2472 case CCISS_SETINTINFO
:
2473 case CCISS_GETNODENAME
:
2474 case CCISS_SETNODENAME
:
2475 case CCISS_GETHEARTBEAT
:
2476 case CCISS_GETBUSTYPES
:
2477 case CCISS_GETFIRMVER
:
2478 case CCISS_GETDRIVVER
:
2479 case CCISS_REVALIDVOLS
:
2480 case CCISS_DEREGDISK
:
2481 case CCISS_REGNEWDISK
:
2483 case CCISS_RESCANDISK
:
2484 case CCISS_GETLUNINFO
:
2485 return hpsa_ioctl(dev
, cmd
, arg
);
2487 case CCISS_PASSTHRU32
:
2488 return hpsa_ioctl32_passthru(dev
, cmd
, arg
);
2489 case CCISS_BIG_PASSTHRU32
:
2490 return hpsa_ioctl32_big_passthru(dev
, cmd
, arg
);
2493 return -ENOIOCTLCMD
;
2498 static int hpsa_getpciinfo_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2500 struct hpsa_pci_info pciinfo
;
2504 pciinfo
.domain
= pci_domain_nr(h
->pdev
->bus
);
2505 pciinfo
.bus
= h
->pdev
->bus
->number
;
2506 pciinfo
.dev_fn
= h
->pdev
->devfn
;
2507 pciinfo
.board_id
= h
->board_id
;
2508 if (copy_to_user(argp
, &pciinfo
, sizeof(pciinfo
)))
2513 static int hpsa_getdrivver_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2515 DriverVer_type DriverVer
;
2516 unsigned char vmaj
, vmin
, vsubmin
;
2519 rc
= sscanf(HPSA_DRIVER_VERSION
, "%hhu.%hhu.%hhu",
2520 &vmaj
, &vmin
, &vsubmin
);
2522 dev_info(&h
->pdev
->dev
, "driver version string '%s' "
2523 "unrecognized.", HPSA_DRIVER_VERSION
);
2528 DriverVer
= (vmaj
<< 16) | (vmin
<< 8) | vsubmin
;
2531 if (copy_to_user(argp
, &DriverVer
, sizeof(DriverVer_type
)))
2536 static int hpsa_passthru_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2538 IOCTL_Command_struct iocommand
;
2539 struct CommandList
*c
;
2541 union u64bit temp64
;
2545 if (!capable(CAP_SYS_RAWIO
))
2547 if (copy_from_user(&iocommand
, argp
, sizeof(iocommand
)))
2549 if ((iocommand
.buf_size
< 1) &&
2550 (iocommand
.Request
.Type
.Direction
!= XFER_NONE
)) {
2553 if (iocommand
.buf_size
> 0) {
2554 buff
= kmalloc(iocommand
.buf_size
, GFP_KERNEL
);
2557 if (iocommand
.Request
.Type
.Direction
== XFER_WRITE
) {
2558 /* Copy the data into the buffer we created */
2559 if (copy_from_user(buff
, iocommand
.buf
,
2560 iocommand
.buf_size
)) {
2565 memset(buff
, 0, iocommand
.buf_size
);
2568 c
= cmd_special_alloc(h
);
2573 /* Fill in the command type */
2574 c
->cmd_type
= CMD_IOCTL_PEND
;
2575 /* Fill in Command Header */
2576 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
2577 if (iocommand
.buf_size
> 0) { /* buffer to fill */
2578 c
->Header
.SGList
= 1;
2579 c
->Header
.SGTotal
= 1;
2580 } else { /* no buffers to fill */
2581 c
->Header
.SGList
= 0;
2582 c
->Header
.SGTotal
= 0;
2584 memcpy(&c
->Header
.LUN
, &iocommand
.LUN_info
, sizeof(c
->Header
.LUN
));
2585 /* use the kernel address the cmd block for tag */
2586 c
->Header
.Tag
.lower
= c
->busaddr
;
2588 /* Fill in Request block */
2589 memcpy(&c
->Request
, &iocommand
.Request
,
2590 sizeof(c
->Request
));
2592 /* Fill in the scatter gather information */
2593 if (iocommand
.buf_size
> 0) {
2594 temp64
.val
= pci_map_single(h
->pdev
, buff
,
2595 iocommand
.buf_size
, PCI_DMA_BIDIRECTIONAL
);
2596 c
->SG
[0].Addr
.lower
= temp64
.val32
.lower
;
2597 c
->SG
[0].Addr
.upper
= temp64
.val32
.upper
;
2598 c
->SG
[0].Len
= iocommand
.buf_size
;
2599 c
->SG
[0].Ext
= 0; /* we are not chaining*/
2601 hpsa_scsi_do_simple_cmd_core(h
, c
);
2602 if (iocommand
.buf_size
> 0)
2603 hpsa_pci_unmap(h
->pdev
, c
, 1, PCI_DMA_BIDIRECTIONAL
);
2604 check_ioctl_unit_attention(h
, c
);
2606 /* Copy the error information out */
2607 memcpy(&iocommand
.error_info
, c
->err_info
,
2608 sizeof(iocommand
.error_info
));
2609 if (copy_to_user(argp
, &iocommand
, sizeof(iocommand
))) {
2611 cmd_special_free(h
, c
);
2614 if (iocommand
.Request
.Type
.Direction
== XFER_READ
&&
2615 iocommand
.buf_size
> 0) {
2616 /* Copy the data out of the buffer we created */
2617 if (copy_to_user(iocommand
.buf
, buff
, iocommand
.buf_size
)) {
2619 cmd_special_free(h
, c
);
2624 cmd_special_free(h
, c
);
2628 static int hpsa_big_passthru_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2630 BIG_IOCTL_Command_struct
*ioc
;
2631 struct CommandList
*c
;
2632 unsigned char **buff
= NULL
;
2633 int *buff_size
= NULL
;
2634 union u64bit temp64
;
2640 BYTE __user
*data_ptr
;
2644 if (!capable(CAP_SYS_RAWIO
))
2646 ioc
= (BIG_IOCTL_Command_struct
*)
2647 kmalloc(sizeof(*ioc
), GFP_KERNEL
);
2652 if (copy_from_user(ioc
, argp
, sizeof(*ioc
))) {
2656 if ((ioc
->buf_size
< 1) &&
2657 (ioc
->Request
.Type
.Direction
!= XFER_NONE
)) {
2661 /* Check kmalloc limits using all SGs */
2662 if (ioc
->malloc_size
> MAX_KMALLOC_SIZE
) {
2666 if (ioc
->buf_size
> ioc
->malloc_size
* MAXSGENTRIES
) {
2670 buff
= kzalloc(MAXSGENTRIES
* sizeof(char *), GFP_KERNEL
);
2675 buff_size
= kmalloc(MAXSGENTRIES
* sizeof(int), GFP_KERNEL
);
2680 left
= ioc
->buf_size
;
2681 data_ptr
= ioc
->buf
;
2683 sz
= (left
> ioc
->malloc_size
) ? ioc
->malloc_size
: left
;
2684 buff_size
[sg_used
] = sz
;
2685 buff
[sg_used
] = kmalloc(sz
, GFP_KERNEL
);
2686 if (buff
[sg_used
] == NULL
) {
2690 if (ioc
->Request
.Type
.Direction
== XFER_WRITE
) {
2691 if (copy_from_user(buff
[sg_used
], data_ptr
, sz
)) {
2696 memset(buff
[sg_used
], 0, sz
);
2701 c
= cmd_special_alloc(h
);
2706 c
->cmd_type
= CMD_IOCTL_PEND
;
2707 c
->Header
.ReplyQueue
= 0;
2708 c
->Header
.SGList
= c
->Header
.SGTotal
= sg_used
;
2709 memcpy(&c
->Header
.LUN
, &ioc
->LUN_info
, sizeof(c
->Header
.LUN
));
2710 c
->Header
.Tag
.lower
= c
->busaddr
;
2711 memcpy(&c
->Request
, &ioc
->Request
, sizeof(c
->Request
));
2712 if (ioc
->buf_size
> 0) {
2714 for (i
= 0; i
< sg_used
; i
++) {
2715 temp64
.val
= pci_map_single(h
->pdev
, buff
[i
],
2716 buff_size
[i
], PCI_DMA_BIDIRECTIONAL
);
2717 c
->SG
[i
].Addr
.lower
= temp64
.val32
.lower
;
2718 c
->SG
[i
].Addr
.upper
= temp64
.val32
.upper
;
2719 c
->SG
[i
].Len
= buff_size
[i
];
2720 /* we are not chaining */
2724 hpsa_scsi_do_simple_cmd_core(h
, c
);
2726 hpsa_pci_unmap(h
->pdev
, c
, sg_used
, PCI_DMA_BIDIRECTIONAL
);
2727 check_ioctl_unit_attention(h
, c
);
2728 /* Copy the error information out */
2729 memcpy(&ioc
->error_info
, c
->err_info
, sizeof(ioc
->error_info
));
2730 if (copy_to_user(argp
, ioc
, sizeof(*ioc
))) {
2731 cmd_special_free(h
, c
);
2735 if (ioc
->Request
.Type
.Direction
== XFER_READ
&& ioc
->buf_size
> 0) {
2736 /* Copy the data out of the buffer we created */
2737 BYTE __user
*ptr
= ioc
->buf
;
2738 for (i
= 0; i
< sg_used
; i
++) {
2739 if (copy_to_user(ptr
, buff
[i
], buff_size
[i
])) {
2740 cmd_special_free(h
, c
);
2744 ptr
+= buff_size
[i
];
2747 cmd_special_free(h
, c
);
2751 for (i
= 0; i
< sg_used
; i
++)
2760 static void check_ioctl_unit_attention(struct ctlr_info
*h
,
2761 struct CommandList
*c
)
2763 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
2764 c
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
)
2765 (void) check_for_unit_attention(h
, c
);
2770 static int hpsa_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
)
2772 struct ctlr_info
*h
;
2773 void __user
*argp
= (void __user
*)arg
;
2775 h
= sdev_to_hba(dev
);
2778 case CCISS_DEREGDISK
:
2779 case CCISS_REGNEWDISK
:
2781 hpsa_scan_start(h
->scsi_host
);
2783 case CCISS_GETPCIINFO
:
2784 return hpsa_getpciinfo_ioctl(h
, argp
);
2785 case CCISS_GETDRIVVER
:
2786 return hpsa_getdrivver_ioctl(h
, argp
);
2787 case CCISS_PASSTHRU
:
2788 return hpsa_passthru_ioctl(h
, argp
);
2789 case CCISS_BIG_PASSTHRU
:
2790 return hpsa_big_passthru_ioctl(h
, argp
);
2796 static int __devinit
hpsa_send_host_reset(struct ctlr_info
*h
,
2797 unsigned char *scsi3addr
, u8 reset_type
)
2799 struct CommandList
*c
;
2804 fill_cmd(c
, HPSA_DEVICE_RESET_MSG
, h
, NULL
, 0, 0,
2805 RAID_CTLR_LUNID
, TYPE_MSG
);
2806 c
->Request
.CDB
[1] = reset_type
; /* fill_cmd defaults to target reset */
2808 enqueue_cmd_and_start_io(h
, c
);
2809 /* Don't wait for completion, the reset won't complete. Don't free
2810 * the command either. This is the last command we will send before
2811 * re-initializing everything, so it doesn't matter and won't leak.
2816 static void fill_cmd(struct CommandList
*c
, u8 cmd
, struct ctlr_info
*h
,
2817 void *buff
, size_t size
, u8 page_code
, unsigned char *scsi3addr
,
2820 int pci_dir
= XFER_NONE
;
2822 c
->cmd_type
= CMD_IOCTL_PEND
;
2823 c
->Header
.ReplyQueue
= 0;
2824 if (buff
!= NULL
&& size
> 0) {
2825 c
->Header
.SGList
= 1;
2826 c
->Header
.SGTotal
= 1;
2828 c
->Header
.SGList
= 0;
2829 c
->Header
.SGTotal
= 0;
2831 c
->Header
.Tag
.lower
= c
->busaddr
;
2832 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
2834 c
->Request
.Type
.Type
= cmd_type
;
2835 if (cmd_type
== TYPE_CMD
) {
2838 /* are we trying to read a vital product page */
2839 if (page_code
!= 0) {
2840 c
->Request
.CDB
[1] = 0x01;
2841 c
->Request
.CDB
[2] = page_code
;
2843 c
->Request
.CDBLen
= 6;
2844 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2845 c
->Request
.Type
.Direction
= XFER_READ
;
2846 c
->Request
.Timeout
= 0;
2847 c
->Request
.CDB
[0] = HPSA_INQUIRY
;
2848 c
->Request
.CDB
[4] = size
& 0xFF;
2850 case HPSA_REPORT_LOG
:
2851 case HPSA_REPORT_PHYS
:
2852 /* Talking to controller so It's a physical command
2853 mode = 00 target = 0. Nothing to write.
2855 c
->Request
.CDBLen
= 12;
2856 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2857 c
->Request
.Type
.Direction
= XFER_READ
;
2858 c
->Request
.Timeout
= 0;
2859 c
->Request
.CDB
[0] = cmd
;
2860 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
2861 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
2862 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
2863 c
->Request
.CDB
[9] = size
& 0xFF;
2865 case HPSA_CACHE_FLUSH
:
2866 c
->Request
.CDBLen
= 12;
2867 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2868 c
->Request
.Type
.Direction
= XFER_WRITE
;
2869 c
->Request
.Timeout
= 0;
2870 c
->Request
.CDB
[0] = BMIC_WRITE
;
2871 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
2873 case TEST_UNIT_READY
:
2874 c
->Request
.CDBLen
= 6;
2875 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2876 c
->Request
.Type
.Direction
= XFER_NONE
;
2877 c
->Request
.Timeout
= 0;
2880 dev_warn(&h
->pdev
->dev
, "unknown command 0x%c\n", cmd
);
2884 } else if (cmd_type
== TYPE_MSG
) {
2887 case HPSA_DEVICE_RESET_MSG
:
2888 c
->Request
.CDBLen
= 16;
2889 c
->Request
.Type
.Type
= 1; /* It is a MSG not a CMD */
2890 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2891 c
->Request
.Type
.Direction
= XFER_NONE
;
2892 c
->Request
.Timeout
= 0; /* Don't time out */
2893 memset(&c
->Request
.CDB
[0], 0, sizeof(c
->Request
.CDB
));
2894 c
->Request
.CDB
[0] = cmd
;
2895 c
->Request
.CDB
[1] = 0x03; /* Reset target above */
2896 /* If bytes 4-7 are zero, it means reset the */
2898 c
->Request
.CDB
[4] = 0x00;
2899 c
->Request
.CDB
[5] = 0x00;
2900 c
->Request
.CDB
[6] = 0x00;
2901 c
->Request
.CDB
[7] = 0x00;
2905 dev_warn(&h
->pdev
->dev
, "unknown message type %d\n",
2910 dev_warn(&h
->pdev
->dev
, "unknown command type %d\n", cmd_type
);
2914 switch (c
->Request
.Type
.Direction
) {
2916 pci_dir
= PCI_DMA_FROMDEVICE
;
2919 pci_dir
= PCI_DMA_TODEVICE
;
2922 pci_dir
= PCI_DMA_NONE
;
2925 pci_dir
= PCI_DMA_BIDIRECTIONAL
;
2928 hpsa_map_one(h
->pdev
, c
, buff
, size
, pci_dir
);
2934 * Map (physical) PCI mem into (virtual) kernel space
2936 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
2938 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
2939 ulong page_offs
= ((ulong
) base
) - page_base
;
2940 void __iomem
*page_remapped
= ioremap(page_base
, page_offs
+ size
);
2942 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
2945 /* Takes cmds off the submission queue and sends them to the hardware,
2946 * then puts them on the queue of cmds waiting for completion.
2948 static void start_io(struct ctlr_info
*h
)
2950 struct CommandList
*c
;
2952 while (!list_empty(&h
->reqQ
)) {
2953 c
= list_entry(h
->reqQ
.next
, struct CommandList
, list
);
2954 /* can't do anything if fifo is full */
2955 if ((h
->access
.fifo_full(h
))) {
2956 dev_warn(&h
->pdev
->dev
, "fifo full\n");
2960 /* Get the first entry from the Request Q */
2964 /* Tell the controller execute command */
2965 h
->access
.submit_command(h
, c
);
2967 /* Put job onto the completed Q */
2972 static inline unsigned long get_next_completion(struct ctlr_info
*h
)
2974 return h
->access
.command_completed(h
);
2977 static inline bool interrupt_pending(struct ctlr_info
*h
)
2979 return h
->access
.intr_pending(h
);
2982 static inline long interrupt_not_for_us(struct ctlr_info
*h
)
2984 return (h
->access
.intr_pending(h
) == 0) ||
2985 (h
->interrupts_enabled
== 0);
2988 static inline int bad_tag(struct ctlr_info
*h
, u32 tag_index
,
2991 if (unlikely(tag_index
>= h
->nr_cmds
)) {
2992 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
2998 static inline void finish_cmd(struct CommandList
*c
, u32 raw_tag
)
3001 if (likely(c
->cmd_type
== CMD_SCSI
))
3002 complete_scsi_command(c
);
3003 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
3004 complete(c
->waiting
);
3007 static inline u32
hpsa_tag_contains_index(u32 tag
)
3009 return tag
& DIRECT_LOOKUP_BIT
;
3012 static inline u32
hpsa_tag_to_index(u32 tag
)
3014 return tag
>> DIRECT_LOOKUP_SHIFT
;
3018 static inline u32
hpsa_tag_discard_error_bits(struct ctlr_info
*h
, u32 tag
)
3020 #define HPSA_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
3021 #define HPSA_SIMPLE_ERROR_BITS 0x03
3022 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
3023 return tag
& ~HPSA_SIMPLE_ERROR_BITS
;
3024 return tag
& ~HPSA_PERF_ERROR_BITS
;
3027 /* process completion of an indexed ("direct lookup") command */
3028 static inline u32
process_indexed_cmd(struct ctlr_info
*h
,
3032 struct CommandList
*c
;
3034 tag_index
= hpsa_tag_to_index(raw_tag
);
3035 if (bad_tag(h
, tag_index
, raw_tag
))
3036 return next_command(h
);
3037 c
= h
->cmd_pool
+ tag_index
;
3038 finish_cmd(c
, raw_tag
);
3039 return next_command(h
);
3042 /* process completion of a non-indexed command */
3043 static inline u32
process_nonindexed_cmd(struct ctlr_info
*h
,
3047 struct CommandList
*c
= NULL
;
3049 tag
= hpsa_tag_discard_error_bits(h
, raw_tag
);
3050 list_for_each_entry(c
, &h
->cmpQ
, list
) {
3051 if ((c
->busaddr
& 0xFFFFFFE0) == (tag
& 0xFFFFFFE0)) {
3052 finish_cmd(c
, raw_tag
);
3053 return next_command(h
);
3056 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
3057 return next_command(h
);
3060 /* Some controllers, like p400, will give us one interrupt
3061 * after a soft reset, even if we turned interrupts off.
3062 * Only need to check for this in the hpsa_xxx_discard_completions
3065 static int ignore_bogus_interrupt(struct ctlr_info
*h
)
3067 if (likely(!reset_devices
))
3070 if (likely(h
->interrupts_enabled
))
3073 dev_info(&h
->pdev
->dev
, "Received interrupt while interrupts disabled "
3074 "(known firmware bug.) Ignoring.\n");
3079 static irqreturn_t
hpsa_intx_discard_completions(int irq
, void *dev_id
)
3081 struct ctlr_info
*h
= dev_id
;
3082 unsigned long flags
;
3085 if (ignore_bogus_interrupt(h
))
3088 if (interrupt_not_for_us(h
))
3090 spin_lock_irqsave(&h
->lock
, flags
);
3091 while (interrupt_pending(h
)) {
3092 raw_tag
= get_next_completion(h
);
3093 while (raw_tag
!= FIFO_EMPTY
)
3094 raw_tag
= next_command(h
);
3096 spin_unlock_irqrestore(&h
->lock
, flags
);
3100 static irqreturn_t
hpsa_msix_discard_completions(int irq
, void *dev_id
)
3102 struct ctlr_info
*h
= dev_id
;
3103 unsigned long flags
;
3106 if (ignore_bogus_interrupt(h
))
3109 spin_lock_irqsave(&h
->lock
, flags
);
3110 raw_tag
= get_next_completion(h
);
3111 while (raw_tag
!= FIFO_EMPTY
)
3112 raw_tag
= next_command(h
);
3113 spin_unlock_irqrestore(&h
->lock
, flags
);
3117 static irqreturn_t
do_hpsa_intr_intx(int irq
, void *dev_id
)
3119 struct ctlr_info
*h
= dev_id
;
3120 unsigned long flags
;
3123 if (interrupt_not_for_us(h
))
3125 spin_lock_irqsave(&h
->lock
, flags
);
3126 while (interrupt_pending(h
)) {
3127 raw_tag
= get_next_completion(h
);
3128 while (raw_tag
!= FIFO_EMPTY
) {
3129 if (hpsa_tag_contains_index(raw_tag
))
3130 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3132 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3135 spin_unlock_irqrestore(&h
->lock
, flags
);
3139 static irqreturn_t
do_hpsa_intr_msi(int irq
, void *dev_id
)
3141 struct ctlr_info
*h
= dev_id
;
3142 unsigned long flags
;
3145 spin_lock_irqsave(&h
->lock
, flags
);
3146 raw_tag
= get_next_completion(h
);
3147 while (raw_tag
!= FIFO_EMPTY
) {
3148 if (hpsa_tag_contains_index(raw_tag
))
3149 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3151 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3153 spin_unlock_irqrestore(&h
->lock
, flags
);
3157 /* Send a message CDB to the firmware. Careful, this only works
3158 * in simple mode, not performant mode due to the tag lookup.
3159 * We only ever use this immediately after a controller reset.
3161 static __devinit
int hpsa_message(struct pci_dev
*pdev
, unsigned char opcode
,
3165 struct CommandListHeader CommandHeader
;
3166 struct RequestBlock Request
;
3167 struct ErrDescriptor ErrorDescriptor
;
3169 struct Command
*cmd
;
3170 static const size_t cmd_sz
= sizeof(*cmd
) +
3171 sizeof(cmd
->ErrorDescriptor
);
3173 uint32_t paddr32
, tag
;
3174 void __iomem
*vaddr
;
3177 vaddr
= pci_ioremap_bar(pdev
, 0);
3181 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
3182 * CCISS commands, so they must be allocated from the lower 4GiB of
3185 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3191 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
3197 /* This must fit, because of the 32-bit consistent DMA mask. Also,
3198 * although there's no guarantee, we assume that the address is at
3199 * least 4-byte aligned (most likely, it's page-aligned).
3203 cmd
->CommandHeader
.ReplyQueue
= 0;
3204 cmd
->CommandHeader
.SGList
= 0;
3205 cmd
->CommandHeader
.SGTotal
= 0;
3206 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
3207 cmd
->CommandHeader
.Tag
.upper
= 0;
3208 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
3210 cmd
->Request
.CDBLen
= 16;
3211 cmd
->Request
.Type
.Type
= TYPE_MSG
;
3212 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
3213 cmd
->Request
.Type
.Direction
= XFER_NONE
;
3214 cmd
->Request
.Timeout
= 0; /* Don't time out */
3215 cmd
->Request
.CDB
[0] = opcode
;
3216 cmd
->Request
.CDB
[1] = type
;
3217 memset(&cmd
->Request
.CDB
[2], 0, 14); /* rest of the CDB is reserved */
3218 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(*cmd
);
3219 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
3220 cmd
->ErrorDescriptor
.Len
= sizeof(struct ErrorInfo
);
3222 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
3224 for (i
= 0; i
< HPSA_MSG_SEND_RETRY_LIMIT
; i
++) {
3225 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
3226 if ((tag
& ~HPSA_SIMPLE_ERROR_BITS
) == paddr32
)
3228 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS
);
3233 /* we leak the DMA buffer here ... no choice since the controller could
3234 * still complete the command.
3236 if (i
== HPSA_MSG_SEND_RETRY_LIMIT
) {
3237 dev_err(&pdev
->dev
, "controller message %02x:%02x timed out\n",
3242 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
3244 if (tag
& HPSA_ERROR_BIT
) {
3245 dev_err(&pdev
->dev
, "controller message %02x:%02x failed\n",
3250 dev_info(&pdev
->dev
, "controller message %02x:%02x succeeded\n",
3255 #define hpsa_noop(p) hpsa_message(p, 3, 0)
3257 static int hpsa_controller_hard_reset(struct pci_dev
*pdev
,
3258 void * __iomem vaddr
, u32 use_doorbell
)
3264 /* For everything after the P600, the PCI power state method
3265 * of resetting the controller doesn't work, so we have this
3266 * other way using the doorbell register.
3268 dev_info(&pdev
->dev
, "using doorbell to reset controller\n");
3269 writel(use_doorbell
, vaddr
+ SA5_DOORBELL
);
3270 } else { /* Try to do it the PCI power state way */
3272 /* Quoting from the Open CISS Specification: "The Power
3273 * Management Control/Status Register (CSR) controls the power
3274 * state of the device. The normal operating state is D0,
3275 * CSR=00h. The software off state is D3, CSR=03h. To reset
3276 * the controller, place the interface device in D3 then to D0,
3277 * this causes a secondary PCI reset which will reset the
3280 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
3283 "hpsa_reset_controller: "
3284 "PCI PM not supported\n");
3287 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
3288 /* enter the D3hot power management state */
3289 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
3290 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
3292 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
3296 /* enter the D0 power management state */
3297 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
3299 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
3302 * The P600 requires a small delay when changing states.
3303 * Otherwise we may think the board did not reset and we bail.
3304 * This for kdump only and is particular to the P600.
3311 static __devinit
void init_driver_version(char *driver_version
, int len
)
3313 memset(driver_version
, 0, len
);
3314 strncpy(driver_version
, "hpsa " HPSA_DRIVER_VERSION
, len
- 1);
3317 static __devinit
int write_driver_ver_to_cfgtable(
3318 struct CfgTable __iomem
*cfgtable
)
3320 char *driver_version
;
3321 int i
, size
= sizeof(cfgtable
->driver_version
);
3323 driver_version
= kmalloc(size
, GFP_KERNEL
);
3324 if (!driver_version
)
3327 init_driver_version(driver_version
, size
);
3328 for (i
= 0; i
< size
; i
++)
3329 writeb(driver_version
[i
], &cfgtable
->driver_version
[i
]);
3330 kfree(driver_version
);
3334 static __devinit
void read_driver_ver_from_cfgtable(
3335 struct CfgTable __iomem
*cfgtable
, unsigned char *driver_ver
)
3339 for (i
= 0; i
< sizeof(cfgtable
->driver_version
); i
++)
3340 driver_ver
[i
] = readb(&cfgtable
->driver_version
[i
]);
3343 static __devinit
int controller_reset_failed(
3344 struct CfgTable __iomem
*cfgtable
)
3347 char *driver_ver
, *old_driver_ver
;
3348 int rc
, size
= sizeof(cfgtable
->driver_version
);
3350 old_driver_ver
= kmalloc(2 * size
, GFP_KERNEL
);
3351 if (!old_driver_ver
)
3353 driver_ver
= old_driver_ver
+ size
;
3355 /* After a reset, the 32 bytes of "driver version" in the cfgtable
3356 * should have been changed, otherwise we know the reset failed.
3358 init_driver_version(old_driver_ver
, size
);
3359 read_driver_ver_from_cfgtable(cfgtable
, driver_ver
);
3360 rc
= !memcmp(driver_ver
, old_driver_ver
, size
);
3361 kfree(old_driver_ver
);
3364 /* This does a hard reset of the controller using PCI power management
3365 * states or the using the doorbell register.
3367 static __devinit
int hpsa_kdump_hard_reset_controller(struct pci_dev
*pdev
)
3371 u64 cfg_base_addr_index
;
3372 void __iomem
*vaddr
;
3373 unsigned long paddr
;
3374 u32 misc_fw_support
;
3376 struct CfgTable __iomem
*cfgtable
;
3379 u16 command_register
;
3381 /* For controllers as old as the P600, this is very nearly
3384 * pci_save_state(pci_dev);
3385 * pci_set_power_state(pci_dev, PCI_D3hot);
3386 * pci_set_power_state(pci_dev, PCI_D0);
3387 * pci_restore_state(pci_dev);
3389 * For controllers newer than the P600, the pci power state
3390 * method of resetting doesn't work so we have another way
3391 * using the doorbell register.
3394 rc
= hpsa_lookup_board_id(pdev
, &board_id
);
3395 if (rc
< 0 || !ctlr_is_resettable(board_id
)) {
3396 dev_warn(&pdev
->dev
, "Not resetting device.\n");
3400 /* if controller is soft- but not hard resettable... */
3401 if (!ctlr_is_hard_resettable(board_id
))
3402 return -ENOTSUPP
; /* try soft reset later. */
3404 /* Save the PCI command register */
3405 pci_read_config_word(pdev
, 4, &command_register
);
3406 /* Turn the board off. This is so that later pci_restore_state()
3407 * won't turn the board on before the rest of config space is ready.
3409 pci_disable_device(pdev
);
3410 pci_save_state(pdev
);
3412 /* find the first memory BAR, so we can find the cfg table */
3413 rc
= hpsa_pci_find_memory_BAR(pdev
, &paddr
);
3416 vaddr
= remap_pci_mem(paddr
, 0x250);
3420 /* find cfgtable in order to check if reset via doorbell is supported */
3421 rc
= hpsa_find_cfg_addrs(pdev
, vaddr
, &cfg_base_addr
,
3422 &cfg_base_addr_index
, &cfg_offset
);
3425 cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
3426 cfg_base_addr_index
) + cfg_offset
, sizeof(*cfgtable
));
3431 rc
= write_driver_ver_to_cfgtable(cfgtable
);
3435 /* If reset via doorbell register is supported, use that.
3436 * There are two such methods. Favor the newest method.
3438 misc_fw_support
= readl(&cfgtable
->misc_fw_support
);
3439 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET2
;
3441 use_doorbell
= DOORBELL_CTLR_RESET2
;
3443 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET
;
3445 dev_warn(&pdev
->dev
, "Controller claims that "
3446 "'Bit 2 doorbell reset' is "
3447 "supported, but not 'bit 5 doorbell reset'. "
3448 "Firmware update is recommended.\n");
3449 rc
= -ENOTSUPP
; /* try soft reset */
3450 goto unmap_cfgtable
;
3454 rc
= hpsa_controller_hard_reset(pdev
, vaddr
, use_doorbell
);
3456 goto unmap_cfgtable
;
3458 pci_restore_state(pdev
);
3459 rc
= pci_enable_device(pdev
);
3461 dev_warn(&pdev
->dev
, "failed to enable device.\n");
3462 goto unmap_cfgtable
;
3464 pci_write_config_word(pdev
, 4, command_register
);
3466 /* Some devices (notably the HP Smart Array 5i Controller)
3467 need a little pause here */
3468 msleep(HPSA_POST_RESET_PAUSE_MSECS
);
3470 /* Wait for board to become not ready, then ready. */
3471 dev_info(&pdev
->dev
, "Waiting for board to reset.\n");
3472 rc
= hpsa_wait_for_board_state(pdev
, vaddr
, BOARD_NOT_READY
);
3474 dev_warn(&pdev
->dev
,
3475 "failed waiting for board to reset."
3476 " Will try soft reset.\n");
3477 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
3478 goto unmap_cfgtable
;
3480 rc
= hpsa_wait_for_board_state(pdev
, vaddr
, BOARD_READY
);
3482 dev_warn(&pdev
->dev
,
3483 "failed waiting for board to become ready "
3484 "after hard reset\n");
3485 goto unmap_cfgtable
;
3488 rc
= controller_reset_failed(vaddr
);
3490 goto unmap_cfgtable
;
3492 dev_warn(&pdev
->dev
, "Unable to successfully reset "
3493 "controller. Will try soft reset.\n");
3496 dev_info(&pdev
->dev
, "board ready after hard reset.\n");
3508 * We cannot read the structure directly, for portability we must use
3510 * This is for debug only.
3512 static void print_cfg_table(struct device
*dev
, struct CfgTable
*tb
)
3518 dev_info(dev
, "Controller Configuration information\n");
3519 dev_info(dev
, "------------------------------------\n");
3520 for (i
= 0; i
< 4; i
++)
3521 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3522 temp_name
[4] = '\0';
3523 dev_info(dev
, " Signature = %s\n", temp_name
);
3524 dev_info(dev
, " Spec Number = %d\n", readl(&(tb
->SpecValence
)));
3525 dev_info(dev
, " Transport methods supported = 0x%x\n",
3526 readl(&(tb
->TransportSupport
)));
3527 dev_info(dev
, " Transport methods active = 0x%x\n",
3528 readl(&(tb
->TransportActive
)));
3529 dev_info(dev
, " Requested transport Method = 0x%x\n",
3530 readl(&(tb
->HostWrite
.TransportRequest
)));
3531 dev_info(dev
, " Coalesce Interrupt Delay = 0x%x\n",
3532 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3533 dev_info(dev
, " Coalesce Interrupt Count = 0x%x\n",
3534 readl(&(tb
->HostWrite
.CoalIntCount
)));
3535 dev_info(dev
, " Max outstanding commands = 0x%d\n",
3536 readl(&(tb
->CmdsOutMax
)));
3537 dev_info(dev
, " Bus Types = 0x%x\n", readl(&(tb
->BusTypes
)));
3538 for (i
= 0; i
< 16; i
++)
3539 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3540 temp_name
[16] = '\0';
3541 dev_info(dev
, " Server Name = %s\n", temp_name
);
3542 dev_info(dev
, " Heartbeat Counter = 0x%x\n\n\n",
3543 readl(&(tb
->HeartBeat
)));
3544 #endif /* HPSA_DEBUG */
3547 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3549 int i
, offset
, mem_type
, bar_type
;
3551 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
3554 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3555 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
3556 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
3559 mem_type
= pci_resource_flags(pdev
, i
) &
3560 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
3562 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
3563 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
3564 offset
+= 4; /* 32 bit */
3566 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
3569 default: /* reserved in PCI 2.2 */
3570 dev_warn(&pdev
->dev
,
3571 "base address is invalid\n");
3576 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
3582 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
3583 * controllers that are capable. If not, we use IO-APIC mode.
3586 static void __devinit
hpsa_interrupt_mode(struct ctlr_info
*h
)
3588 #ifdef CONFIG_PCI_MSI
3590 struct msix_entry hpsa_msix_entries
[4] = { {0, 0}, {0, 1},
3594 /* Some boards advertise MSI but don't really support it */
3595 if ((h
->board_id
== 0x40700E11) || (h
->board_id
== 0x40800E11) ||
3596 (h
->board_id
== 0x40820E11) || (h
->board_id
== 0x40830E11))
3597 goto default_int_mode
;
3598 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSIX
)) {
3599 dev_info(&h
->pdev
->dev
, "MSIX\n");
3600 err
= pci_enable_msix(h
->pdev
, hpsa_msix_entries
, 4);
3602 h
->intr
[0] = hpsa_msix_entries
[0].vector
;
3603 h
->intr
[1] = hpsa_msix_entries
[1].vector
;
3604 h
->intr
[2] = hpsa_msix_entries
[2].vector
;
3605 h
->intr
[3] = hpsa_msix_entries
[3].vector
;
3610 dev_warn(&h
->pdev
->dev
, "only %d MSI-X vectors "
3611 "available\n", err
);
3612 goto default_int_mode
;
3614 dev_warn(&h
->pdev
->dev
, "MSI-X init failed %d\n",
3616 goto default_int_mode
;
3619 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSI
)) {
3620 dev_info(&h
->pdev
->dev
, "MSI\n");
3621 if (!pci_enable_msi(h
->pdev
))
3624 dev_warn(&h
->pdev
->dev
, "MSI init failed\n");
3627 #endif /* CONFIG_PCI_MSI */
3628 /* if we get here we're going to use the default interrupt mode */
3629 h
->intr
[h
->intr_mode
] = h
->pdev
->irq
;
3632 static int __devinit
hpsa_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
)
3635 u32 subsystem_vendor_id
, subsystem_device_id
;
3637 subsystem_vendor_id
= pdev
->subsystem_vendor
;
3638 subsystem_device_id
= pdev
->subsystem_device
;
3639 *board_id
= ((subsystem_device_id
<< 16) & 0xffff0000) |
3640 subsystem_vendor_id
;
3642 for (i
= 0; i
< ARRAY_SIZE(products
); i
++)
3643 if (*board_id
== products
[i
].board_id
)
3646 if ((subsystem_vendor_id
!= PCI_VENDOR_ID_HP
&&
3647 subsystem_vendor_id
!= PCI_VENDOR_ID_COMPAQ
) ||
3649 dev_warn(&pdev
->dev
, "unrecognized board ID: "
3650 "0x%08x, ignoring.\n", *board_id
);
3653 return ARRAY_SIZE(products
) - 1; /* generic unknown smart array */
3656 static inline bool hpsa_board_disabled(struct pci_dev
*pdev
)
3660 (void) pci_read_config_word(pdev
, PCI_COMMAND
, &command
);
3661 return ((command
& PCI_COMMAND_MEMORY
) == 0);
3664 static int __devinit
hpsa_pci_find_memory_BAR(struct pci_dev
*pdev
,
3665 unsigned long *memory_bar
)
3669 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++)
3670 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
) {
3671 /* addressing mode bits already removed */
3672 *memory_bar
= pci_resource_start(pdev
, i
);
3673 dev_dbg(&pdev
->dev
, "memory BAR = %lx\n",
3677 dev_warn(&pdev
->dev
, "no memory BAR found\n");
3681 static int __devinit
hpsa_wait_for_board_state(struct pci_dev
*pdev
,
3682 void __iomem
*vaddr
, int wait_for_ready
)
3687 iterations
= HPSA_BOARD_READY_ITERATIONS
;
3689 iterations
= HPSA_BOARD_NOT_READY_ITERATIONS
;
3691 for (i
= 0; i
< iterations
; i
++) {
3692 scratchpad
= readl(vaddr
+ SA5_SCRATCHPAD_OFFSET
);
3693 if (wait_for_ready
) {
3694 if (scratchpad
== HPSA_FIRMWARE_READY
)
3697 if (scratchpad
!= HPSA_FIRMWARE_READY
)
3700 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS
);
3702 dev_warn(&pdev
->dev
, "board not ready, timed out.\n");
3706 static int __devinit
hpsa_find_cfg_addrs(struct pci_dev
*pdev
,
3707 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
3710 *cfg_base_addr
= readl(vaddr
+ SA5_CTCFG_OFFSET
);
3711 *cfg_offset
= readl(vaddr
+ SA5_CTMEM_OFFSET
);
3712 *cfg_base_addr
&= (u32
) 0x0000ffff;
3713 *cfg_base_addr_index
= find_PCI_BAR_index(pdev
, *cfg_base_addr
);
3714 if (*cfg_base_addr_index
== -1) {
3715 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index\n");
3721 static int __devinit
hpsa_find_cfgtables(struct ctlr_info
*h
)
3725 u64 cfg_base_addr_index
;
3729 rc
= hpsa_find_cfg_addrs(h
->pdev
, h
->vaddr
, &cfg_base_addr
,
3730 &cfg_base_addr_index
, &cfg_offset
);
3733 h
->cfgtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
3734 cfg_base_addr_index
) + cfg_offset
, sizeof(*h
->cfgtable
));
3737 rc
= write_driver_ver_to_cfgtable(h
->cfgtable
);
3740 /* Find performant mode table. */
3741 trans_offset
= readl(&h
->cfgtable
->TransMethodOffset
);
3742 h
->transtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
3743 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
3744 sizeof(*h
->transtable
));
3750 static void __devinit
hpsa_get_max_perf_mode_cmds(struct ctlr_info
*h
)
3752 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
3754 /* Limit commands in memory limited kdump scenario. */
3755 if (reset_devices
&& h
->max_commands
> 32)
3756 h
->max_commands
= 32;
3758 if (h
->max_commands
< 16) {
3759 dev_warn(&h
->pdev
->dev
, "Controller reports "
3760 "max supported commands of %d, an obvious lie. "
3761 "Using 16. Ensure that firmware is up to date.\n",
3763 h
->max_commands
= 16;
3767 /* Interrogate the hardware for some limits:
3768 * max commands, max SG elements without chaining, and with chaining,
3769 * SG chain block size, etc.
3771 static void __devinit
hpsa_find_board_params(struct ctlr_info
*h
)
3773 hpsa_get_max_perf_mode_cmds(h
);
3774 h
->nr_cmds
= h
->max_commands
- 4; /* Allow room for some ioctls */
3775 h
->maxsgentries
= readl(&(h
->cfgtable
->MaxScatterGatherElements
));
3777 * Limit in-command s/g elements to 32 save dma'able memory.
3778 * Howvever spec says if 0, use 31
3780 h
->max_cmd_sg_entries
= 31;
3781 if (h
->maxsgentries
> 512) {
3782 h
->max_cmd_sg_entries
= 32;
3783 h
->chainsize
= h
->maxsgentries
- h
->max_cmd_sg_entries
+ 1;
3784 h
->maxsgentries
--; /* save one for chain pointer */
3786 h
->maxsgentries
= 31; /* default to traditional values */
3791 static inline bool hpsa_CISS_signature_present(struct ctlr_info
*h
)
3793 if ((readb(&h
->cfgtable
->Signature
[0]) != 'C') ||
3794 (readb(&h
->cfgtable
->Signature
[1]) != 'I') ||
3795 (readb(&h
->cfgtable
->Signature
[2]) != 'S') ||
3796 (readb(&h
->cfgtable
->Signature
[3]) != 'S')) {
3797 dev_warn(&h
->pdev
->dev
, "not a valid CISS config table\n");
3803 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
3804 static inline void hpsa_enable_scsi_prefetch(struct ctlr_info
*h
)
3809 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
3811 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
3815 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
3816 * in a prefetch beyond physical memory.
3818 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info
*h
)
3822 if (h
->board_id
!= 0x3225103C)
3824 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
3825 dma_prefetch
|= 0x8000;
3826 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
3829 static void __devinit
hpsa_wait_for_mode_change_ack(struct ctlr_info
*h
)
3833 unsigned long flags
;
3835 /* under certain very rare conditions, this can take awhile.
3836 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3837 * as we enter this code.)
3839 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
3840 spin_lock_irqsave(&h
->lock
, flags
);
3841 doorbell_value
= readl(h
->vaddr
+ SA5_DOORBELL
);
3842 spin_unlock_irqrestore(&h
->lock
, flags
);
3843 if (!(doorbell_value
& CFGTBL_ChangeReq
))
3845 /* delay and try again */
3846 usleep_range(10000, 20000);
3850 static int __devinit
hpsa_enter_simple_mode(struct ctlr_info
*h
)
3854 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
3855 if (!(trans_support
& SIMPLE_MODE
))
3858 h
->max_commands
= readl(&(h
->cfgtable
->CmdsOutMax
));
3859 /* Update the field, and then ring the doorbell */
3860 writel(CFGTBL_Trans_Simple
, &(h
->cfgtable
->HostWrite
.TransportRequest
));
3861 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
3862 hpsa_wait_for_mode_change_ack(h
);
3863 print_cfg_table(&h
->pdev
->dev
, h
->cfgtable
);
3864 if (!(readl(&(h
->cfgtable
->TransportActive
)) & CFGTBL_Trans_Simple
)) {
3865 dev_warn(&h
->pdev
->dev
,
3866 "unable to get board into simple mode\n");
3869 h
->transMethod
= CFGTBL_Trans_Simple
;
3873 static int __devinit
hpsa_pci_init(struct ctlr_info
*h
)
3875 int prod_index
, err
;
3877 prod_index
= hpsa_lookup_board_id(h
->pdev
, &h
->board_id
);
3880 h
->product_name
= products
[prod_index
].product_name
;
3881 h
->access
= *(products
[prod_index
].access
);
3883 if (hpsa_board_disabled(h
->pdev
)) {
3884 dev_warn(&h
->pdev
->dev
, "controller appears to be disabled\n");
3888 pci_disable_link_state(h
->pdev
, PCIE_LINK_STATE_L0S
|
3889 PCIE_LINK_STATE_L1
| PCIE_LINK_STATE_CLKPM
);
3891 err
= pci_enable_device(h
->pdev
);
3893 dev_warn(&h
->pdev
->dev
, "unable to enable PCI device\n");
3897 err
= pci_request_regions(h
->pdev
, "hpsa");
3899 dev_err(&h
->pdev
->dev
,
3900 "cannot obtain PCI resources, aborting\n");
3903 hpsa_interrupt_mode(h
);
3904 err
= hpsa_pci_find_memory_BAR(h
->pdev
, &h
->paddr
);
3906 goto err_out_free_res
;
3907 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
3910 goto err_out_free_res
;
3912 err
= hpsa_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
);
3914 goto err_out_free_res
;
3915 err
= hpsa_find_cfgtables(h
);
3917 goto err_out_free_res
;
3918 hpsa_find_board_params(h
);
3920 if (!hpsa_CISS_signature_present(h
)) {
3922 goto err_out_free_res
;
3924 hpsa_enable_scsi_prefetch(h
);
3925 hpsa_p600_dma_prefetch_quirk(h
);
3926 err
= hpsa_enter_simple_mode(h
);
3928 goto err_out_free_res
;
3933 iounmap(h
->transtable
);
3935 iounmap(h
->cfgtable
);
3939 * Deliberately omit pci_disable_device(): it does something nasty to
3940 * Smart Array controllers that pci_enable_device does not undo
3942 pci_release_regions(h
->pdev
);
3946 static void __devinit
hpsa_hba_inquiry(struct ctlr_info
*h
)
3950 #define HBA_INQUIRY_BYTE_COUNT 64
3951 h
->hba_inquiry_data
= kmalloc(HBA_INQUIRY_BYTE_COUNT
, GFP_KERNEL
);
3952 if (!h
->hba_inquiry_data
)
3954 rc
= hpsa_scsi_do_inquiry(h
, RAID_CTLR_LUNID
, 0,
3955 h
->hba_inquiry_data
, HBA_INQUIRY_BYTE_COUNT
);
3957 kfree(h
->hba_inquiry_data
);
3958 h
->hba_inquiry_data
= NULL
;
3962 static __devinit
int hpsa_init_reset_devices(struct pci_dev
*pdev
)
3969 /* Reset the controller with a PCI power-cycle or via doorbell */
3970 rc
= hpsa_kdump_hard_reset_controller(pdev
);
3972 /* -ENOTSUPP here means we cannot reset the controller
3973 * but it's already (and still) up and running in
3974 * "performant mode". Or, it might be 640x, which can't reset
3975 * due to concerns about shared bbwc between 6402/6404 pair.
3977 if (rc
== -ENOTSUPP
)
3978 return rc
; /* just try to do the kdump anyhow. */
3982 /* Now try to get the controller to respond to a no-op */
3983 dev_warn(&pdev
->dev
, "Waiting for controller to respond to no-op\n");
3984 for (i
= 0; i
< HPSA_POST_RESET_NOOP_RETRIES
; i
++) {
3985 if (hpsa_noop(pdev
) == 0)
3988 dev_warn(&pdev
->dev
, "no-op failed%s\n",
3989 (i
< 11 ? "; re-trying" : ""));
3994 static __devinit
int hpsa_allocate_cmd_pool(struct ctlr_info
*h
)
3996 h
->cmd_pool_bits
= kzalloc(
3997 DIV_ROUND_UP(h
->nr_cmds
, BITS_PER_LONG
) *
3998 sizeof(unsigned long), GFP_KERNEL
);
3999 h
->cmd_pool
= pci_alloc_consistent(h
->pdev
,
4000 h
->nr_cmds
* sizeof(*h
->cmd_pool
),
4001 &(h
->cmd_pool_dhandle
));
4002 h
->errinfo_pool
= pci_alloc_consistent(h
->pdev
,
4003 h
->nr_cmds
* sizeof(*h
->errinfo_pool
),
4004 &(h
->errinfo_pool_dhandle
));
4005 if ((h
->cmd_pool_bits
== NULL
)
4006 || (h
->cmd_pool
== NULL
)
4007 || (h
->errinfo_pool
== NULL
)) {
4008 dev_err(&h
->pdev
->dev
, "out of memory in %s", __func__
);
4014 static void hpsa_free_cmd_pool(struct ctlr_info
*h
)
4016 kfree(h
->cmd_pool_bits
);
4018 pci_free_consistent(h
->pdev
,
4019 h
->nr_cmds
* sizeof(struct CommandList
),
4020 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4021 if (h
->errinfo_pool
)
4022 pci_free_consistent(h
->pdev
,
4023 h
->nr_cmds
* sizeof(struct ErrorInfo
),
4025 h
->errinfo_pool_dhandle
);
4028 static int hpsa_request_irq(struct ctlr_info
*h
,
4029 irqreturn_t (*msixhandler
)(int, void *),
4030 irqreturn_t (*intxhandler
)(int, void *))
4034 if (h
->msix_vector
|| h
->msi_vector
)
4035 rc
= request_irq(h
->intr
[h
->intr_mode
], msixhandler
,
4038 rc
= request_irq(h
->intr
[h
->intr_mode
], intxhandler
,
4039 IRQF_SHARED
, h
->devname
, h
);
4041 dev_err(&h
->pdev
->dev
, "unable to get irq %d for %s\n",
4042 h
->intr
[h
->intr_mode
], h
->devname
);
4048 static int __devinit
hpsa_kdump_soft_reset(struct ctlr_info
*h
)
4050 if (hpsa_send_host_reset(h
, RAID_CTLR_LUNID
,
4051 HPSA_RESET_TYPE_CONTROLLER
)) {
4052 dev_warn(&h
->pdev
->dev
, "Resetting array controller failed.\n");
4056 dev_info(&h
->pdev
->dev
, "Waiting for board to soft reset.\n");
4057 if (hpsa_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_NOT_READY
)) {
4058 dev_warn(&h
->pdev
->dev
, "Soft reset had no effect.\n");
4062 dev_info(&h
->pdev
->dev
, "Board reset, awaiting READY status.\n");
4063 if (hpsa_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
)) {
4064 dev_warn(&h
->pdev
->dev
, "Board failed to become ready "
4065 "after soft reset.\n");
4072 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info
*h
)
4074 free_irq(h
->intr
[h
->intr_mode
], h
);
4075 #ifdef CONFIG_PCI_MSI
4077 pci_disable_msix(h
->pdev
);
4078 else if (h
->msi_vector
)
4079 pci_disable_msi(h
->pdev
);
4080 #endif /* CONFIG_PCI_MSI */
4081 hpsa_free_sg_chain_blocks(h
);
4082 hpsa_free_cmd_pool(h
);
4083 kfree(h
->blockFetchTable
);
4084 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
4085 h
->reply_pool
, h
->reply_pool_dhandle
);
4089 iounmap(h
->transtable
);
4091 iounmap(h
->cfgtable
);
4092 pci_release_regions(h
->pdev
);
4096 static int __devinit
hpsa_init_one(struct pci_dev
*pdev
,
4097 const struct pci_device_id
*ent
)
4100 struct ctlr_info
*h
;
4101 int try_soft_reset
= 0;
4102 unsigned long flags
;
4104 if (number_of_controllers
== 0)
4105 printk(KERN_INFO DRIVER_NAME
"\n");
4107 rc
= hpsa_init_reset_devices(pdev
);
4109 if (rc
!= -ENOTSUPP
)
4111 /* If the reset fails in a particular way (it has no way to do
4112 * a proper hard reset, so returns -ENOTSUPP) we can try to do
4113 * a soft reset once we get the controller configured up to the
4114 * point that it can accept a command.
4120 reinit_after_soft_reset
:
4122 /* Command structures must be aligned on a 32-byte boundary because
4123 * the 5 lower bits of the address are used by the hardware. and by
4124 * the driver. See comments in hpsa.h for more info.
4126 #define COMMANDLIST_ALIGNMENT 32
4127 BUILD_BUG_ON(sizeof(struct CommandList
) % COMMANDLIST_ALIGNMENT
);
4128 h
= kzalloc(sizeof(*h
), GFP_KERNEL
);
4133 h
->busy_initializing
= 1;
4134 h
->intr_mode
= hpsa_simple_mode
? SIMPLE_MODE_INT
: PERF_MODE_INT
;
4135 INIT_LIST_HEAD(&h
->cmpQ
);
4136 INIT_LIST_HEAD(&h
->reqQ
);
4137 spin_lock_init(&h
->lock
);
4138 spin_lock_init(&h
->scan_lock
);
4139 rc
= hpsa_pci_init(h
);
4143 sprintf(h
->devname
, "hpsa%d", number_of_controllers
);
4144 h
->ctlr
= number_of_controllers
;
4145 number_of_controllers
++;
4147 /* configure PCI DMA stuff */
4148 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(64));
4152 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
4156 dev_err(&pdev
->dev
, "no suitable DMA available\n");
4161 /* make sure the board interrupts are off */
4162 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4164 if (hpsa_request_irq(h
, do_hpsa_intr_msi
, do_hpsa_intr_intx
))
4166 dev_info(&pdev
->dev
, "%s: <0x%x> at IRQ %d%s using DAC\n",
4167 h
->devname
, pdev
->device
,
4168 h
->intr
[h
->intr_mode
], dac
? "" : " not");
4169 if (hpsa_allocate_cmd_pool(h
))
4171 if (hpsa_allocate_sg_chain_blocks(h
))
4173 init_waitqueue_head(&h
->scan_wait_queue
);
4174 h
->scan_finished
= 1; /* no scan currently in progress */
4176 pci_set_drvdata(pdev
, h
);
4178 h
->scsi_host
= NULL
;
4179 spin_lock_init(&h
->devlock
);
4180 hpsa_put_ctlr_into_performant_mode(h
);
4182 /* At this point, the controller is ready to take commands.
4183 * Now, if reset_devices and the hard reset didn't work, try
4184 * the soft reset and see if that works.
4186 if (try_soft_reset
) {
4188 /* This is kind of gross. We may or may not get a completion
4189 * from the soft reset command, and if we do, then the value
4190 * from the fifo may or may not be valid. So, we wait 10 secs
4191 * after the reset throwing away any completions we get during
4192 * that time. Unregister the interrupt handler and register
4193 * fake ones to scoop up any residual completions.
4195 spin_lock_irqsave(&h
->lock
, flags
);
4196 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4197 spin_unlock_irqrestore(&h
->lock
, flags
);
4198 free_irq(h
->intr
[h
->intr_mode
], h
);
4199 rc
= hpsa_request_irq(h
, hpsa_msix_discard_completions
,
4200 hpsa_intx_discard_completions
);
4202 dev_warn(&h
->pdev
->dev
, "Failed to request_irq after "
4207 rc
= hpsa_kdump_soft_reset(h
);
4209 /* Neither hard nor soft reset worked, we're hosed. */
4212 dev_info(&h
->pdev
->dev
, "Board READY.\n");
4213 dev_info(&h
->pdev
->dev
,
4214 "Waiting for stale completions to drain.\n");
4215 h
->access
.set_intr_mask(h
, HPSA_INTR_ON
);
4217 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4219 rc
= controller_reset_failed(h
->cfgtable
);
4221 dev_info(&h
->pdev
->dev
,
4222 "Soft reset appears to have failed.\n");
4224 /* since the controller's reset, we have to go back and re-init
4225 * everything. Easiest to just forget what we've done and do it
4228 hpsa_undo_allocations_after_kdump_soft_reset(h
);
4231 /* don't go to clean4, we already unallocated */
4234 goto reinit_after_soft_reset
;
4237 /* Turn the interrupts on so we can service requests */
4238 h
->access
.set_intr_mask(h
, HPSA_INTR_ON
);
4240 hpsa_hba_inquiry(h
);
4241 hpsa_register_scsi(h
); /* hook ourselves into SCSI subsystem */
4242 h
->busy_initializing
= 0;
4246 hpsa_free_sg_chain_blocks(h
);
4247 hpsa_free_cmd_pool(h
);
4248 free_irq(h
->intr
[h
->intr_mode
], h
);
4251 h
->busy_initializing
= 0;
4256 static void hpsa_flush_cache(struct ctlr_info
*h
)
4259 struct CommandList
*c
;
4261 flush_buf
= kzalloc(4, GFP_KERNEL
);
4265 c
= cmd_special_alloc(h
);
4267 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
4270 fill_cmd(c
, HPSA_CACHE_FLUSH
, h
, flush_buf
, 4, 0,
4271 RAID_CTLR_LUNID
, TYPE_CMD
);
4272 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_TODEVICE
);
4273 if (c
->err_info
->CommandStatus
!= 0)
4274 dev_warn(&h
->pdev
->dev
,
4275 "error flushing cache on controller\n");
4276 cmd_special_free(h
, c
);
4281 static void hpsa_shutdown(struct pci_dev
*pdev
)
4283 struct ctlr_info
*h
;
4285 h
= pci_get_drvdata(pdev
);
4286 /* Turn board interrupts off and send the flush cache command
4287 * sendcmd will turn off interrupt, and send the flush...
4288 * To write all data in the battery backed cache to disks
4290 hpsa_flush_cache(h
);
4291 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4292 free_irq(h
->intr
[h
->intr_mode
], h
);
4293 #ifdef CONFIG_PCI_MSI
4295 pci_disable_msix(h
->pdev
);
4296 else if (h
->msi_vector
)
4297 pci_disable_msi(h
->pdev
);
4298 #endif /* CONFIG_PCI_MSI */
4301 static void __devexit
hpsa_remove_one(struct pci_dev
*pdev
)
4303 struct ctlr_info
*h
;
4305 if (pci_get_drvdata(pdev
) == NULL
) {
4306 dev_err(&pdev
->dev
, "unable to remove device \n");
4309 h
= pci_get_drvdata(pdev
);
4310 hpsa_unregister_scsi(h
); /* unhook from SCSI subsystem */
4311 hpsa_shutdown(pdev
);
4313 iounmap(h
->transtable
);
4314 iounmap(h
->cfgtable
);
4315 hpsa_free_sg_chain_blocks(h
);
4316 pci_free_consistent(h
->pdev
,
4317 h
->nr_cmds
* sizeof(struct CommandList
),
4318 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4319 pci_free_consistent(h
->pdev
,
4320 h
->nr_cmds
* sizeof(struct ErrorInfo
),
4321 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
4322 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
4323 h
->reply_pool
, h
->reply_pool_dhandle
);
4324 kfree(h
->cmd_pool_bits
);
4325 kfree(h
->blockFetchTable
);
4326 kfree(h
->hba_inquiry_data
);
4328 * Deliberately omit pci_disable_device(): it does something nasty to
4329 * Smart Array controllers that pci_enable_device does not undo
4331 pci_release_regions(pdev
);
4332 pci_set_drvdata(pdev
, NULL
);
4336 static int hpsa_suspend(__attribute__((unused
)) struct pci_dev
*pdev
,
4337 __attribute__((unused
)) pm_message_t state
)
4342 static int hpsa_resume(__attribute__((unused
)) struct pci_dev
*pdev
)
4347 static struct pci_driver hpsa_pci_driver
= {
4349 .probe
= hpsa_init_one
,
4350 .remove
= __devexit_p(hpsa_remove_one
),
4351 .id_table
= hpsa_pci_device_id
, /* id_table */
4352 .shutdown
= hpsa_shutdown
,
4353 .suspend
= hpsa_suspend
,
4354 .resume
= hpsa_resume
,
4357 /* Fill in bucket_map[], given nsgs (the max number of
4358 * scatter gather elements supported) and bucket[],
4359 * which is an array of 8 integers. The bucket[] array
4360 * contains 8 different DMA transfer sizes (in 16
4361 * byte increments) which the controller uses to fetch
4362 * commands. This function fills in bucket_map[], which
4363 * maps a given number of scatter gather elements to one of
4364 * the 8 DMA transfer sizes. The point of it is to allow the
4365 * controller to only do as much DMA as needed to fetch the
4366 * command, with the DMA transfer size encoded in the lower
4367 * bits of the command address.
4369 static void calc_bucket_map(int bucket
[], int num_buckets
,
4370 int nsgs
, int *bucket_map
)
4374 /* even a command with 0 SGs requires 4 blocks */
4375 #define MINIMUM_TRANSFER_BLOCKS 4
4376 #define NUM_BUCKETS 8
4377 /* Note, bucket_map must have nsgs+1 entries. */
4378 for (i
= 0; i
<= nsgs
; i
++) {
4379 /* Compute size of a command with i SG entries */
4380 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
4381 b
= num_buckets
; /* Assume the biggest bucket */
4382 /* Find the bucket that is just big enough */
4383 for (j
= 0; j
< 8; j
++) {
4384 if (bucket
[j
] >= size
) {
4389 /* for a command with i SG entries, use bucket b. */
4394 static __devinit
void hpsa_enter_performant_mode(struct ctlr_info
*h
,
4398 unsigned long register_value
;
4400 /* This is a bit complicated. There are 8 registers on
4401 * the controller which we write to to tell it 8 different
4402 * sizes of commands which there may be. It's a way of
4403 * reducing the DMA done to fetch each command. Encoded into
4404 * each command's tag are 3 bits which communicate to the controller
4405 * which of the eight sizes that command fits within. The size of
4406 * each command depends on how many scatter gather entries there are.
4407 * Each SG entry requires 16 bytes. The eight registers are programmed
4408 * with the number of 16-byte blocks a command of that size requires.
4409 * The smallest command possible requires 5 such 16 byte blocks.
4410 * the largest command possible requires MAXSGENTRIES + 4 16-byte
4411 * blocks. Note, this only extends to the SG entries contained
4412 * within the command block, and does not extend to chained blocks
4413 * of SG elements. bft[] contains the eight values we write to
4414 * the registers. They are not evenly distributed, but have more
4415 * sizes for small commands, and fewer sizes for larger commands.
4417 int bft
[8] = {5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES
+ 4};
4418 BUILD_BUG_ON(28 > MAXSGENTRIES
+ 4);
4419 /* 5 = 1 s/g entry or 4k
4420 * 6 = 2 s/g entry or 8k
4421 * 8 = 4 s/g entry or 16k
4422 * 10 = 6 s/g entry or 24k
4425 h
->reply_pool_wraparound
= 1; /* spec: init to 1 */
4427 /* Controller spec: zero out this buffer. */
4428 memset(h
->reply_pool
, 0, h
->reply_pool_size
);
4429 h
->reply_pool_head
= h
->reply_pool
;
4431 bft
[7] = h
->max_sg_entries
+ 4;
4432 calc_bucket_map(bft
, ARRAY_SIZE(bft
), 32, h
->blockFetchTable
);
4433 for (i
= 0; i
< 8; i
++)
4434 writel(bft
[i
], &h
->transtable
->BlockFetch
[i
]);
4436 /* size of controller ring buffer */
4437 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
4438 writel(1, &h
->transtable
->RepQCount
);
4439 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
4440 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
4441 writel(h
->reply_pool_dhandle
, &h
->transtable
->RepQAddr0Low32
);
4442 writel(0, &h
->transtable
->RepQAddr0High32
);
4443 writel(CFGTBL_Trans_Performant
| use_short_tags
,
4444 &(h
->cfgtable
->HostWrite
.TransportRequest
));
4445 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
4446 hpsa_wait_for_mode_change_ack(h
);
4447 register_value
= readl(&(h
->cfgtable
->TransportActive
));
4448 if (!(register_value
& CFGTBL_Trans_Performant
)) {
4449 dev_warn(&h
->pdev
->dev
, "unable to get board into"
4450 " performant mode\n");
4453 /* Change the access methods to the performant access methods */
4454 h
->access
= SA5_performant_access
;
4455 h
->transMethod
= CFGTBL_Trans_Performant
;
4458 static __devinit
void hpsa_put_ctlr_into_performant_mode(struct ctlr_info
*h
)
4462 if (hpsa_simple_mode
)
4465 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
4466 if (!(trans_support
& PERFORMANT_MODE
))
4469 hpsa_get_max_perf_mode_cmds(h
);
4470 h
->max_sg_entries
= 32;
4471 /* Performant mode ring buffer and supporting data structures */
4472 h
->reply_pool_size
= h
->max_commands
* sizeof(u64
);
4473 h
->reply_pool
= pci_alloc_consistent(h
->pdev
, h
->reply_pool_size
,
4474 &(h
->reply_pool_dhandle
));
4476 /* Need a block fetch table for performant mode */
4477 h
->blockFetchTable
= kmalloc(((h
->max_sg_entries
+1) *
4478 sizeof(u32
)), GFP_KERNEL
);
4480 if ((h
->reply_pool
== NULL
)
4481 || (h
->blockFetchTable
== NULL
))
4484 hpsa_enter_performant_mode(h
,
4485 trans_support
& CFGTBL_Trans_use_short_tags
);
4491 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
4492 h
->reply_pool
, h
->reply_pool_dhandle
);
4493 kfree(h
->blockFetchTable
);
4497 * This is it. Register the PCI driver information for the cards we control
4498 * the OS will call our registered routines when it finds one of our cards.
4500 static int __init
hpsa_init(void)
4502 return pci_register_driver(&hpsa_pci_driver
);
4505 static void __exit
hpsa_cleanup(void)
4507 pci_unregister_driver(&hpsa_pci_driver
);
4510 module_init(hpsa_init
);
4511 module_exit(hpsa_cleanup
);