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 <linux/atomic.h>
51 #include <linux/kthread.h>
52 #include <linux/jiffies.h>
56 /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */
57 #define HPSA_DRIVER_VERSION "2.0.2-1"
58 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
61 /* How long to wait (in milliseconds) for board to go into simple mode */
62 #define MAX_CONFIG_WAIT 30000
63 #define MAX_IOCTL_CONFIG_WAIT 1000
65 /*define how many times we will try a command because of bus resets */
66 #define MAX_CMD_RETRIES 3
68 /* Embedded module documentation macros - see modules.h */
69 MODULE_AUTHOR("Hewlett-Packard Company");
70 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
72 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
73 MODULE_VERSION(HPSA_DRIVER_VERSION
);
74 MODULE_LICENSE("GPL");
76 static int hpsa_allow_any
;
77 module_param(hpsa_allow_any
, int, S_IRUGO
|S_IWUSR
);
78 MODULE_PARM_DESC(hpsa_allow_any
,
79 "Allow hpsa driver to access unknown HP Smart Array hardware");
80 static int hpsa_simple_mode
;
81 module_param(hpsa_simple_mode
, int, S_IRUGO
|S_IWUSR
);
82 MODULE_PARM_DESC(hpsa_simple_mode
,
83 "Use 'simple mode' rather than 'performant mode'");
85 /* define the PCI info for the cards we can control */
86 static const struct pci_device_id hpsa_pci_device_id
[] = {
87 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3241},
88 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3243},
89 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3245},
90 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3247},
91 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3249},
92 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x324a},
93 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x324b},
94 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3233},
95 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3350},
96 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3351},
97 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3352},
98 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3353},
99 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3354},
100 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3355},
101 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3356},
102 {PCI_VENDOR_ID_HP
, PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
,
103 PCI_CLASS_STORAGE_RAID
<< 8, 0xffff << 8, 0},
107 MODULE_DEVICE_TABLE(pci
, hpsa_pci_device_id
);
109 /* board_id = Subsystem Device ID & Vendor ID
110 * product = Marketing Name for the board
111 * access = Address of the struct of function pointers
113 static struct board_type products
[] = {
114 {0x3241103C, "Smart Array P212", &SA5_access
},
115 {0x3243103C, "Smart Array P410", &SA5_access
},
116 {0x3245103C, "Smart Array P410i", &SA5_access
},
117 {0x3247103C, "Smart Array P411", &SA5_access
},
118 {0x3249103C, "Smart Array P812", &SA5_access
},
119 {0x324a103C, "Smart Array P712m", &SA5_access
},
120 {0x324b103C, "Smart Array P711m", &SA5_access
},
121 {0x3350103C, "Smart Array", &SA5_access
},
122 {0x3351103C, "Smart Array", &SA5_access
},
123 {0x3352103C, "Smart Array", &SA5_access
},
124 {0x3353103C, "Smart Array", &SA5_access
},
125 {0x3354103C, "Smart Array", &SA5_access
},
126 {0x3355103C, "Smart Array", &SA5_access
},
127 {0x3356103C, "Smart Array", &SA5_access
},
128 {0xFFFF103C, "Unknown Smart Array", &SA5_access
},
131 static int number_of_controllers
;
133 static struct list_head hpsa_ctlr_list
= LIST_HEAD_INIT(hpsa_ctlr_list
);
134 static spinlock_t lockup_detector_lock
;
135 static struct task_struct
*hpsa_lockup_detector
;
137 static irqreturn_t
do_hpsa_intr_intx(int irq
, void *dev_id
);
138 static irqreturn_t
do_hpsa_intr_msi(int irq
, void *dev_id
);
139 static int hpsa_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
);
140 static void start_io(struct ctlr_info
*h
);
143 static int hpsa_compat_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
);
146 static void cmd_free(struct ctlr_info
*h
, struct CommandList
*c
);
147 static void cmd_special_free(struct ctlr_info
*h
, struct CommandList
*c
);
148 static struct CommandList
*cmd_alloc(struct ctlr_info
*h
);
149 static struct CommandList
*cmd_special_alloc(struct ctlr_info
*h
);
150 static void fill_cmd(struct CommandList
*c
, u8 cmd
, struct ctlr_info
*h
,
151 void *buff
, size_t size
, u8 page_code
, unsigned char *scsi3addr
,
154 static int hpsa_scsi_queue_command(struct Scsi_Host
*h
, struct scsi_cmnd
*cmd
);
155 static void hpsa_scan_start(struct Scsi_Host
*);
156 static int hpsa_scan_finished(struct Scsi_Host
*sh
,
157 unsigned long elapsed_time
);
158 static int hpsa_change_queue_depth(struct scsi_device
*sdev
,
159 int qdepth
, int reason
);
161 static int hpsa_eh_device_reset_handler(struct scsi_cmnd
*scsicmd
);
162 static int hpsa_slave_alloc(struct scsi_device
*sdev
);
163 static void hpsa_slave_destroy(struct scsi_device
*sdev
);
165 static void hpsa_update_scsi_devices(struct ctlr_info
*h
, int hostno
);
166 static int check_for_unit_attention(struct ctlr_info
*h
,
167 struct CommandList
*c
);
168 static void check_ioctl_unit_attention(struct ctlr_info
*h
,
169 struct CommandList
*c
);
170 /* performant mode helper functions */
171 static void calc_bucket_map(int *bucket
, int num_buckets
,
172 int nsgs
, int *bucket_map
);
173 static __devinit
void hpsa_put_ctlr_into_performant_mode(struct ctlr_info
*h
);
174 static inline u32
next_command(struct ctlr_info
*h
);
175 static int __devinit
hpsa_find_cfg_addrs(struct pci_dev
*pdev
,
176 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
178 static int __devinit
hpsa_pci_find_memory_BAR(struct pci_dev
*pdev
,
179 unsigned long *memory_bar
);
180 static int __devinit
hpsa_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
);
181 static int __devinit
hpsa_wait_for_board_state(struct pci_dev
*pdev
,
182 void __iomem
*vaddr
, int wait_for_ready
);
183 #define BOARD_NOT_READY 0
184 #define BOARD_READY 1
186 static inline struct ctlr_info
*sdev_to_hba(struct scsi_device
*sdev
)
188 unsigned long *priv
= shost_priv(sdev
->host
);
189 return (struct ctlr_info
*) *priv
;
192 static inline struct ctlr_info
*shost_to_hba(struct Scsi_Host
*sh
)
194 unsigned long *priv
= shost_priv(sh
);
195 return (struct ctlr_info
*) *priv
;
198 static int check_for_unit_attention(struct ctlr_info
*h
,
199 struct CommandList
*c
)
201 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
204 switch (c
->err_info
->SenseInfo
[12]) {
206 dev_warn(&h
->pdev
->dev
, HPSA
"%d: a state change "
207 "detected, command retried\n", h
->ctlr
);
210 dev_warn(&h
->pdev
->dev
, HPSA
"%d: LUN failure "
211 "detected, action required\n", h
->ctlr
);
213 case REPORT_LUNS_CHANGED
:
214 dev_warn(&h
->pdev
->dev
, HPSA
"%d: report LUN data "
215 "changed, action required\n", h
->ctlr
);
217 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
218 * target (array) devices.
222 dev_warn(&h
->pdev
->dev
, HPSA
"%d: a power on "
223 "or device reset detected\n", h
->ctlr
);
225 case UNIT_ATTENTION_CLEARED
:
226 dev_warn(&h
->pdev
->dev
, HPSA
"%d: unit attention "
227 "cleared by another initiator\n", h
->ctlr
);
230 dev_warn(&h
->pdev
->dev
, HPSA
"%d: unknown "
231 "unit attention detected\n", h
->ctlr
);
237 static ssize_t
host_store_rescan(struct device
*dev
,
238 struct device_attribute
*attr
,
239 const char *buf
, size_t count
)
242 struct Scsi_Host
*shost
= class_to_shost(dev
);
243 h
= shost_to_hba(shost
);
244 hpsa_scan_start(h
->scsi_host
);
248 static ssize_t
host_show_firmware_revision(struct device
*dev
,
249 struct device_attribute
*attr
, char *buf
)
252 struct Scsi_Host
*shost
= class_to_shost(dev
);
253 unsigned char *fwrev
;
255 h
= shost_to_hba(shost
);
256 if (!h
->hba_inquiry_data
)
258 fwrev
= &h
->hba_inquiry_data
[32];
259 return snprintf(buf
, 20, "%c%c%c%c\n",
260 fwrev
[0], fwrev
[1], fwrev
[2], fwrev
[3]);
263 static ssize_t
host_show_commands_outstanding(struct device
*dev
,
264 struct device_attribute
*attr
, char *buf
)
266 struct Scsi_Host
*shost
= class_to_shost(dev
);
267 struct ctlr_info
*h
= shost_to_hba(shost
);
269 return snprintf(buf
, 20, "%d\n", h
->commands_outstanding
);
272 static ssize_t
host_show_transport_mode(struct device
*dev
,
273 struct device_attribute
*attr
, char *buf
)
276 struct Scsi_Host
*shost
= class_to_shost(dev
);
278 h
= shost_to_hba(shost
);
279 return snprintf(buf
, 20, "%s\n",
280 h
->transMethod
& CFGTBL_Trans_Performant
?
281 "performant" : "simple");
284 /* List of controllers which cannot be hard reset on kexec with reset_devices */
285 static u32 unresettable_controller
[] = {
286 0x324a103C, /* Smart Array P712m */
287 0x324b103C, /* SmartArray P711m */
288 0x3223103C, /* Smart Array P800 */
289 0x3234103C, /* Smart Array P400 */
290 0x3235103C, /* Smart Array P400i */
291 0x3211103C, /* Smart Array E200i */
292 0x3212103C, /* Smart Array E200 */
293 0x3213103C, /* Smart Array E200i */
294 0x3214103C, /* Smart Array E200i */
295 0x3215103C, /* Smart Array E200i */
296 0x3237103C, /* Smart Array E500 */
297 0x323D103C, /* Smart Array P700m */
298 0x40800E11, /* Smart Array 5i */
299 0x409C0E11, /* Smart Array 6400 */
300 0x409D0E11, /* Smart Array 6400 EM */
301 0x40700E11, /* Smart Array 5300 */
302 0x40820E11, /* Smart Array 532 */
303 0x40830E11, /* Smart Array 5312 */
304 0x409A0E11, /* Smart Array 641 */
305 0x409B0E11, /* Smart Array 642 */
306 0x40910E11, /* Smart Array 6i */
309 /* List of controllers which cannot even be soft reset */
310 static u32 soft_unresettable_controller
[] = {
311 0x40800E11, /* Smart Array 5i */
312 0x40700E11, /* Smart Array 5300 */
313 0x40820E11, /* Smart Array 532 */
314 0x40830E11, /* Smart Array 5312 */
315 0x409A0E11, /* Smart Array 641 */
316 0x409B0E11, /* Smart Array 642 */
317 0x40910E11, /* Smart Array 6i */
318 /* Exclude 640x boards. These are two pci devices in one slot
319 * which share a battery backed cache module. One controls the
320 * cache, the other accesses the cache through the one that controls
321 * it. If we reset the one controlling the cache, the other will
322 * likely not be happy. Just forbid resetting this conjoined mess.
323 * The 640x isn't really supported by hpsa anyway.
325 0x409C0E11, /* Smart Array 6400 */
326 0x409D0E11, /* Smart Array 6400 EM */
329 static int ctlr_is_hard_resettable(u32 board_id
)
333 for (i
= 0; i
< ARRAY_SIZE(unresettable_controller
); i
++)
334 if (unresettable_controller
[i
] == board_id
)
339 static int ctlr_is_soft_resettable(u32 board_id
)
343 for (i
= 0; i
< ARRAY_SIZE(soft_unresettable_controller
); i
++)
344 if (soft_unresettable_controller
[i
] == board_id
)
349 static int ctlr_is_resettable(u32 board_id
)
351 return ctlr_is_hard_resettable(board_id
) ||
352 ctlr_is_soft_resettable(board_id
);
355 static ssize_t
host_show_resettable(struct device
*dev
,
356 struct device_attribute
*attr
, char *buf
)
359 struct Scsi_Host
*shost
= class_to_shost(dev
);
361 h
= shost_to_hba(shost
);
362 return snprintf(buf
, 20, "%d\n", ctlr_is_resettable(h
->board_id
));
365 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr
[])
367 return (scsi3addr
[3] & 0xC0) == 0x40;
370 static const char *raid_label
[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
373 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
375 static ssize_t
raid_level_show(struct device
*dev
,
376 struct device_attribute
*attr
, char *buf
)
379 unsigned char rlevel
;
381 struct scsi_device
*sdev
;
382 struct hpsa_scsi_dev_t
*hdev
;
385 sdev
= to_scsi_device(dev
);
386 h
= sdev_to_hba(sdev
);
387 spin_lock_irqsave(&h
->lock
, flags
);
388 hdev
= sdev
->hostdata
;
390 spin_unlock_irqrestore(&h
->lock
, flags
);
394 /* Is this even a logical drive? */
395 if (!is_logical_dev_addr_mode(hdev
->scsi3addr
)) {
396 spin_unlock_irqrestore(&h
->lock
, flags
);
397 l
= snprintf(buf
, PAGE_SIZE
, "N/A\n");
401 rlevel
= hdev
->raid_level
;
402 spin_unlock_irqrestore(&h
->lock
, flags
);
403 if (rlevel
> RAID_UNKNOWN
)
404 rlevel
= RAID_UNKNOWN
;
405 l
= snprintf(buf
, PAGE_SIZE
, "RAID %s\n", raid_label
[rlevel
]);
409 static ssize_t
lunid_show(struct device
*dev
,
410 struct device_attribute
*attr
, char *buf
)
413 struct scsi_device
*sdev
;
414 struct hpsa_scsi_dev_t
*hdev
;
416 unsigned char lunid
[8];
418 sdev
= to_scsi_device(dev
);
419 h
= sdev_to_hba(sdev
);
420 spin_lock_irqsave(&h
->lock
, flags
);
421 hdev
= sdev
->hostdata
;
423 spin_unlock_irqrestore(&h
->lock
, flags
);
426 memcpy(lunid
, hdev
->scsi3addr
, sizeof(lunid
));
427 spin_unlock_irqrestore(&h
->lock
, flags
);
428 return snprintf(buf
, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
429 lunid
[0], lunid
[1], lunid
[2], lunid
[3],
430 lunid
[4], lunid
[5], lunid
[6], lunid
[7]);
433 static ssize_t
unique_id_show(struct device
*dev
,
434 struct device_attribute
*attr
, char *buf
)
437 struct scsi_device
*sdev
;
438 struct hpsa_scsi_dev_t
*hdev
;
440 unsigned char sn
[16];
442 sdev
= to_scsi_device(dev
);
443 h
= sdev_to_hba(sdev
);
444 spin_lock_irqsave(&h
->lock
, flags
);
445 hdev
= sdev
->hostdata
;
447 spin_unlock_irqrestore(&h
->lock
, flags
);
450 memcpy(sn
, hdev
->device_id
, sizeof(sn
));
451 spin_unlock_irqrestore(&h
->lock
, flags
);
452 return snprintf(buf
, 16 * 2 + 2,
453 "%02X%02X%02X%02X%02X%02X%02X%02X"
454 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
455 sn
[0], sn
[1], sn
[2], sn
[3],
456 sn
[4], sn
[5], sn
[6], sn
[7],
457 sn
[8], sn
[9], sn
[10], sn
[11],
458 sn
[12], sn
[13], sn
[14], sn
[15]);
461 static DEVICE_ATTR(raid_level
, S_IRUGO
, raid_level_show
, NULL
);
462 static DEVICE_ATTR(lunid
, S_IRUGO
, lunid_show
, NULL
);
463 static DEVICE_ATTR(unique_id
, S_IRUGO
, unique_id_show
, NULL
);
464 static DEVICE_ATTR(rescan
, S_IWUSR
, NULL
, host_store_rescan
);
465 static DEVICE_ATTR(firmware_revision
, S_IRUGO
,
466 host_show_firmware_revision
, NULL
);
467 static DEVICE_ATTR(commands_outstanding
, S_IRUGO
,
468 host_show_commands_outstanding
, NULL
);
469 static DEVICE_ATTR(transport_mode
, S_IRUGO
,
470 host_show_transport_mode
, NULL
);
471 static DEVICE_ATTR(resettable
, S_IRUGO
,
472 host_show_resettable
, NULL
);
474 static struct device_attribute
*hpsa_sdev_attrs
[] = {
475 &dev_attr_raid_level
,
481 static struct device_attribute
*hpsa_shost_attrs
[] = {
483 &dev_attr_firmware_revision
,
484 &dev_attr_commands_outstanding
,
485 &dev_attr_transport_mode
,
486 &dev_attr_resettable
,
490 static struct scsi_host_template hpsa_driver_template
= {
491 .module
= THIS_MODULE
,
494 .queuecommand
= hpsa_scsi_queue_command
,
495 .scan_start
= hpsa_scan_start
,
496 .scan_finished
= hpsa_scan_finished
,
497 .change_queue_depth
= hpsa_change_queue_depth
,
499 .use_clustering
= ENABLE_CLUSTERING
,
500 .eh_device_reset_handler
= hpsa_eh_device_reset_handler
,
502 .slave_alloc
= hpsa_slave_alloc
,
503 .slave_destroy
= hpsa_slave_destroy
,
505 .compat_ioctl
= hpsa_compat_ioctl
,
507 .sdev_attrs
= hpsa_sdev_attrs
,
508 .shost_attrs
= hpsa_shost_attrs
,
513 /* Enqueuing and dequeuing functions for cmdlists. */
514 static inline void addQ(struct list_head
*list
, struct CommandList
*c
)
516 list_add_tail(&c
->list
, list
);
519 static inline u32
next_command(struct ctlr_info
*h
)
523 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
524 return h
->access
.command_completed(h
);
526 if ((*(h
->reply_pool_head
) & 1) == (h
->reply_pool_wraparound
)) {
527 a
= *(h
->reply_pool_head
); /* Next cmd in ring buffer */
528 (h
->reply_pool_head
)++;
529 h
->commands_outstanding
--;
533 /* Check for wraparound */
534 if (h
->reply_pool_head
== (h
->reply_pool
+ h
->max_commands
)) {
535 h
->reply_pool_head
= h
->reply_pool
;
536 h
->reply_pool_wraparound
^= 1;
541 /* set_performant_mode: Modify the tag for cciss performant
542 * set bit 0 for pull model, bits 3-1 for block fetch
545 static void set_performant_mode(struct ctlr_info
*h
, struct CommandList
*c
)
547 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
548 c
->busaddr
|= 1 | (h
->blockFetchTable
[c
->Header
.SGList
] << 1);
551 static void enqueue_cmd_and_start_io(struct ctlr_info
*h
,
552 struct CommandList
*c
)
556 set_performant_mode(h
, c
);
557 spin_lock_irqsave(&h
->lock
, flags
);
561 spin_unlock_irqrestore(&h
->lock
, flags
);
564 static inline void removeQ(struct CommandList
*c
)
566 if (WARN_ON(list_empty(&c
->list
)))
568 list_del_init(&c
->list
);
571 static inline int is_hba_lunid(unsigned char scsi3addr
[])
573 return memcmp(scsi3addr
, RAID_CTLR_LUNID
, 8) == 0;
576 static inline int is_scsi_rev_5(struct ctlr_info
*h
)
578 if (!h
->hba_inquiry_data
)
580 if ((h
->hba_inquiry_data
[2] & 0x07) == 5)
585 static int hpsa_find_target_lun(struct ctlr_info
*h
,
586 unsigned char scsi3addr
[], int bus
, int *target
, int *lun
)
588 /* finds an unused bus, target, lun for a new physical device
589 * assumes h->devlock is held
592 DECLARE_BITMAP(lun_taken
, HPSA_MAX_DEVICES
);
594 bitmap_zero(lun_taken
, HPSA_MAX_DEVICES
);
596 for (i
= 0; i
< h
->ndevices
; i
++) {
597 if (h
->dev
[i
]->bus
== bus
&& h
->dev
[i
]->target
!= -1)
598 __set_bit(h
->dev
[i
]->target
, lun_taken
);
601 i
= find_first_zero_bit(lun_taken
, HPSA_MAX_DEVICES
);
602 if (i
< HPSA_MAX_DEVICES
) {
611 /* Add an entry into h->dev[] array. */
612 static int hpsa_scsi_add_entry(struct ctlr_info
*h
, int hostno
,
613 struct hpsa_scsi_dev_t
*device
,
614 struct hpsa_scsi_dev_t
*added
[], int *nadded
)
616 /* assumes h->devlock is held */
619 unsigned char addr1
[8], addr2
[8];
620 struct hpsa_scsi_dev_t
*sd
;
622 if (n
>= HPSA_MAX_DEVICES
) {
623 dev_err(&h
->pdev
->dev
, "too many devices, some will be "
628 /* physical devices do not have lun or target assigned until now. */
629 if (device
->lun
!= -1)
630 /* Logical device, lun is already assigned. */
633 /* If this device a non-zero lun of a multi-lun device
634 * byte 4 of the 8-byte LUN addr will contain the logical
635 * unit no, zero otherise.
637 if (device
->scsi3addr
[4] == 0) {
638 /* This is not a non-zero lun of a multi-lun device */
639 if (hpsa_find_target_lun(h
, device
->scsi3addr
,
640 device
->bus
, &device
->target
, &device
->lun
) != 0)
645 /* This is a non-zero lun of a multi-lun device.
646 * Search through our list and find the device which
647 * has the same 8 byte LUN address, excepting byte 4.
648 * Assign the same bus and target for this new LUN.
649 * Use the logical unit number from the firmware.
651 memcpy(addr1
, device
->scsi3addr
, 8);
653 for (i
= 0; i
< n
; i
++) {
655 memcpy(addr2
, sd
->scsi3addr
, 8);
657 /* differ only in byte 4? */
658 if (memcmp(addr1
, addr2
, 8) == 0) {
659 device
->bus
= sd
->bus
;
660 device
->target
= sd
->target
;
661 device
->lun
= device
->scsi3addr
[4];
665 if (device
->lun
== -1) {
666 dev_warn(&h
->pdev
->dev
, "physical device with no LUN=0,"
667 " suspect firmware bug or unsupported hardware "
676 added
[*nadded
] = device
;
679 /* initially, (before registering with scsi layer) we don't
680 * know our hostno and we don't want to print anything first
681 * time anyway (the scsi layer's inquiries will show that info)
683 /* if (hostno != -1) */
684 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d added.\n",
685 scsi_device_type(device
->devtype
), hostno
,
686 device
->bus
, device
->target
, device
->lun
);
690 /* Update an entry in h->dev[] array. */
691 static void hpsa_scsi_update_entry(struct ctlr_info
*h
, int hostno
,
692 int entry
, struct hpsa_scsi_dev_t
*new_entry
)
694 /* assumes h->devlock is held */
695 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_DEVICES
);
697 /* Raid level changed. */
698 h
->dev
[entry
]->raid_level
= new_entry
->raid_level
;
699 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d updated.\n",
700 scsi_device_type(new_entry
->devtype
), hostno
, new_entry
->bus
,
701 new_entry
->target
, new_entry
->lun
);
704 /* Replace an entry from h->dev[] array. */
705 static void hpsa_scsi_replace_entry(struct ctlr_info
*h
, int hostno
,
706 int entry
, struct hpsa_scsi_dev_t
*new_entry
,
707 struct hpsa_scsi_dev_t
*added
[], int *nadded
,
708 struct hpsa_scsi_dev_t
*removed
[], int *nremoved
)
710 /* assumes h->devlock is held */
711 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_DEVICES
);
712 removed
[*nremoved
] = h
->dev
[entry
];
716 * New physical devices won't have target/lun assigned yet
717 * so we need to preserve the values in the slot we are replacing.
719 if (new_entry
->target
== -1) {
720 new_entry
->target
= h
->dev
[entry
]->target
;
721 new_entry
->lun
= h
->dev
[entry
]->lun
;
724 h
->dev
[entry
] = new_entry
;
725 added
[*nadded
] = new_entry
;
727 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d changed.\n",
728 scsi_device_type(new_entry
->devtype
), hostno
, new_entry
->bus
,
729 new_entry
->target
, new_entry
->lun
);
732 /* Remove an entry from h->dev[] array. */
733 static void hpsa_scsi_remove_entry(struct ctlr_info
*h
, int hostno
, int entry
,
734 struct hpsa_scsi_dev_t
*removed
[], int *nremoved
)
736 /* assumes h->devlock is held */
738 struct hpsa_scsi_dev_t
*sd
;
740 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_DEVICES
);
743 removed
[*nremoved
] = h
->dev
[entry
];
746 for (i
= entry
; i
< h
->ndevices
-1; i
++)
747 h
->dev
[i
] = h
->dev
[i
+1];
749 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d removed.\n",
750 scsi_device_type(sd
->devtype
), hostno
, sd
->bus
, sd
->target
,
754 #define SCSI3ADDR_EQ(a, b) ( \
755 (a)[7] == (b)[7] && \
756 (a)[6] == (b)[6] && \
757 (a)[5] == (b)[5] && \
758 (a)[4] == (b)[4] && \
759 (a)[3] == (b)[3] && \
760 (a)[2] == (b)[2] && \
761 (a)[1] == (b)[1] && \
764 static void fixup_botched_add(struct ctlr_info
*h
,
765 struct hpsa_scsi_dev_t
*added
)
767 /* called when scsi_add_device fails in order to re-adjust
768 * h->dev[] to match the mid layer's view.
773 spin_lock_irqsave(&h
->lock
, flags
);
774 for (i
= 0; i
< h
->ndevices
; i
++) {
775 if (h
->dev
[i
] == added
) {
776 for (j
= i
; j
< h
->ndevices
-1; j
++)
777 h
->dev
[j
] = h
->dev
[j
+1];
782 spin_unlock_irqrestore(&h
->lock
, flags
);
786 static inline int device_is_the_same(struct hpsa_scsi_dev_t
*dev1
,
787 struct hpsa_scsi_dev_t
*dev2
)
789 /* we compare everything except lun and target as these
790 * are not yet assigned. Compare parts likely
793 if (memcmp(dev1
->scsi3addr
, dev2
->scsi3addr
,
794 sizeof(dev1
->scsi3addr
)) != 0)
796 if (memcmp(dev1
->device_id
, dev2
->device_id
,
797 sizeof(dev1
->device_id
)) != 0)
799 if (memcmp(dev1
->model
, dev2
->model
, sizeof(dev1
->model
)) != 0)
801 if (memcmp(dev1
->vendor
, dev2
->vendor
, sizeof(dev1
->vendor
)) != 0)
803 if (dev1
->devtype
!= dev2
->devtype
)
805 if (dev1
->bus
!= dev2
->bus
)
810 static inline int device_updated(struct hpsa_scsi_dev_t
*dev1
,
811 struct hpsa_scsi_dev_t
*dev2
)
813 /* Device attributes that can change, but don't mean
814 * that the device is a different device, nor that the OS
815 * needs to be told anything about the change.
817 if (dev1
->raid_level
!= dev2
->raid_level
)
822 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
823 * and return needle location in *index. If scsi3addr matches, but not
824 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
825 * location in *index.
826 * In the case of a minor device attribute change, such as RAID level, just
827 * return DEVICE_UPDATED, along with the updated device's location in index.
828 * If needle not found, return DEVICE_NOT_FOUND.
830 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t
*needle
,
831 struct hpsa_scsi_dev_t
*haystack
[], int haystack_size
,
835 #define DEVICE_NOT_FOUND 0
836 #define DEVICE_CHANGED 1
837 #define DEVICE_SAME 2
838 #define DEVICE_UPDATED 3
839 for (i
= 0; i
< haystack_size
; i
++) {
840 if (haystack
[i
] == NULL
) /* previously removed. */
842 if (SCSI3ADDR_EQ(needle
->scsi3addr
, haystack
[i
]->scsi3addr
)) {
844 if (device_is_the_same(needle
, haystack
[i
])) {
845 if (device_updated(needle
, haystack
[i
]))
846 return DEVICE_UPDATED
;
849 return DEVICE_CHANGED
;
854 return DEVICE_NOT_FOUND
;
857 static void adjust_hpsa_scsi_table(struct ctlr_info
*h
, int hostno
,
858 struct hpsa_scsi_dev_t
*sd
[], int nsds
)
860 /* sd contains scsi3 addresses and devtypes, and inquiry
861 * data. This function takes what's in sd to be the current
862 * reality and updates h->dev[] to reflect that reality.
864 int i
, entry
, device_change
, changes
= 0;
865 struct hpsa_scsi_dev_t
*csd
;
867 struct hpsa_scsi_dev_t
**added
, **removed
;
868 int nadded
, nremoved
;
869 struct Scsi_Host
*sh
= NULL
;
871 added
= kzalloc(sizeof(*added
) * HPSA_MAX_DEVICES
, GFP_KERNEL
);
872 removed
= kzalloc(sizeof(*removed
) * HPSA_MAX_DEVICES
, GFP_KERNEL
);
874 if (!added
|| !removed
) {
875 dev_warn(&h
->pdev
->dev
, "out of memory in "
876 "adjust_hpsa_scsi_table\n");
880 spin_lock_irqsave(&h
->devlock
, flags
);
882 /* find any devices in h->dev[] that are not in
883 * sd[] and remove them from h->dev[], and for any
884 * devices which have changed, remove the old device
885 * info and add the new device info.
886 * If minor device attributes change, just update
887 * the existing device structure.
892 while (i
< h
->ndevices
) {
894 device_change
= hpsa_scsi_find_entry(csd
, sd
, nsds
, &entry
);
895 if (device_change
== DEVICE_NOT_FOUND
) {
897 hpsa_scsi_remove_entry(h
, hostno
, i
,
899 continue; /* remove ^^^, hence i not incremented */
900 } else if (device_change
== DEVICE_CHANGED
) {
902 hpsa_scsi_replace_entry(h
, hostno
, i
, sd
[entry
],
903 added
, &nadded
, removed
, &nremoved
);
904 /* Set it to NULL to prevent it from being freed
905 * at the bottom of hpsa_update_scsi_devices()
908 } else if (device_change
== DEVICE_UPDATED
) {
909 hpsa_scsi_update_entry(h
, hostno
, i
, sd
[entry
]);
914 /* Now, make sure every device listed in sd[] is also
915 * listed in h->dev[], adding them if they aren't found
918 for (i
= 0; i
< nsds
; i
++) {
919 if (!sd
[i
]) /* if already added above. */
921 device_change
= hpsa_scsi_find_entry(sd
[i
], h
->dev
,
922 h
->ndevices
, &entry
);
923 if (device_change
== DEVICE_NOT_FOUND
) {
925 if (hpsa_scsi_add_entry(h
, hostno
, sd
[i
],
926 added
, &nadded
) != 0)
928 sd
[i
] = NULL
; /* prevent from being freed later. */
929 } else if (device_change
== DEVICE_CHANGED
) {
930 /* should never happen... */
932 dev_warn(&h
->pdev
->dev
,
933 "device unexpectedly changed.\n");
934 /* but if it does happen, we just ignore that device */
937 spin_unlock_irqrestore(&h
->devlock
, flags
);
939 /* Don't notify scsi mid layer of any changes the first time through
940 * (or if there are no changes) scsi_scan_host will do it later the
941 * first time through.
943 if (hostno
== -1 || !changes
)
947 /* Notify scsi mid layer of any removed devices */
948 for (i
= 0; i
< nremoved
; i
++) {
949 struct scsi_device
*sdev
=
950 scsi_device_lookup(sh
, removed
[i
]->bus
,
951 removed
[i
]->target
, removed
[i
]->lun
);
953 scsi_remove_device(sdev
);
954 scsi_device_put(sdev
);
956 /* We don't expect to get here.
957 * future cmds to this device will get selection
958 * timeout as if the device was gone.
960 dev_warn(&h
->pdev
->dev
, "didn't find c%db%dt%dl%d "
961 " for removal.", hostno
, removed
[i
]->bus
,
962 removed
[i
]->target
, removed
[i
]->lun
);
968 /* Notify scsi mid layer of any added devices */
969 for (i
= 0; i
< nadded
; i
++) {
970 if (scsi_add_device(sh
, added
[i
]->bus
,
971 added
[i
]->target
, added
[i
]->lun
) == 0)
973 dev_warn(&h
->pdev
->dev
, "scsi_add_device c%db%dt%dl%d failed, "
974 "device not added.\n", hostno
, added
[i
]->bus
,
975 added
[i
]->target
, added
[i
]->lun
);
976 /* now we have to remove it from h->dev,
977 * since it didn't get added to scsi mid layer
979 fixup_botched_add(h
, added
[i
]);
988 * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t *
989 * Assume's h->devlock is held.
991 static struct hpsa_scsi_dev_t
*lookup_hpsa_scsi_dev(struct ctlr_info
*h
,
992 int bus
, int target
, int lun
)
995 struct hpsa_scsi_dev_t
*sd
;
997 for (i
= 0; i
< h
->ndevices
; i
++) {
999 if (sd
->bus
== bus
&& sd
->target
== target
&& sd
->lun
== lun
)
1005 /* link sdev->hostdata to our per-device structure. */
1006 static int hpsa_slave_alloc(struct scsi_device
*sdev
)
1008 struct hpsa_scsi_dev_t
*sd
;
1009 unsigned long flags
;
1010 struct ctlr_info
*h
;
1012 h
= sdev_to_hba(sdev
);
1013 spin_lock_irqsave(&h
->devlock
, flags
);
1014 sd
= lookup_hpsa_scsi_dev(h
, sdev_channel(sdev
),
1015 sdev_id(sdev
), sdev
->lun
);
1017 sdev
->hostdata
= sd
;
1018 spin_unlock_irqrestore(&h
->devlock
, flags
);
1022 static void hpsa_slave_destroy(struct scsi_device
*sdev
)
1024 /* nothing to do. */
1027 static void hpsa_free_sg_chain_blocks(struct ctlr_info
*h
)
1031 if (!h
->cmd_sg_list
)
1033 for (i
= 0; i
< h
->nr_cmds
; i
++) {
1034 kfree(h
->cmd_sg_list
[i
]);
1035 h
->cmd_sg_list
[i
] = NULL
;
1037 kfree(h
->cmd_sg_list
);
1038 h
->cmd_sg_list
= NULL
;
1041 static int hpsa_allocate_sg_chain_blocks(struct ctlr_info
*h
)
1045 if (h
->chainsize
<= 0)
1048 h
->cmd_sg_list
= kzalloc(sizeof(*h
->cmd_sg_list
) * h
->nr_cmds
,
1050 if (!h
->cmd_sg_list
)
1052 for (i
= 0; i
< h
->nr_cmds
; i
++) {
1053 h
->cmd_sg_list
[i
] = kmalloc(sizeof(*h
->cmd_sg_list
[i
]) *
1054 h
->chainsize
, GFP_KERNEL
);
1055 if (!h
->cmd_sg_list
[i
])
1061 hpsa_free_sg_chain_blocks(h
);
1065 static void hpsa_map_sg_chain_block(struct ctlr_info
*h
,
1066 struct CommandList
*c
)
1068 struct SGDescriptor
*chain_sg
, *chain_block
;
1071 chain_sg
= &c
->SG
[h
->max_cmd_sg_entries
- 1];
1072 chain_block
= h
->cmd_sg_list
[c
->cmdindex
];
1073 chain_sg
->Ext
= HPSA_SG_CHAIN
;
1074 chain_sg
->Len
= sizeof(*chain_sg
) *
1075 (c
->Header
.SGTotal
- h
->max_cmd_sg_entries
);
1076 temp64
= pci_map_single(h
->pdev
, chain_block
, chain_sg
->Len
,
1078 chain_sg
->Addr
.lower
= (u32
) (temp64
& 0x0FFFFFFFFULL
);
1079 chain_sg
->Addr
.upper
= (u32
) ((temp64
>> 32) & 0x0FFFFFFFFULL
);
1082 static void hpsa_unmap_sg_chain_block(struct ctlr_info
*h
,
1083 struct CommandList
*c
)
1085 struct SGDescriptor
*chain_sg
;
1086 union u64bit temp64
;
1088 if (c
->Header
.SGTotal
<= h
->max_cmd_sg_entries
)
1091 chain_sg
= &c
->SG
[h
->max_cmd_sg_entries
- 1];
1092 temp64
.val32
.lower
= chain_sg
->Addr
.lower
;
1093 temp64
.val32
.upper
= chain_sg
->Addr
.upper
;
1094 pci_unmap_single(h
->pdev
, temp64
.val
, chain_sg
->Len
, PCI_DMA_TODEVICE
);
1097 static void complete_scsi_command(struct CommandList
*cp
)
1099 struct scsi_cmnd
*cmd
;
1100 struct ctlr_info
*h
;
1101 struct ErrorInfo
*ei
;
1103 unsigned char sense_key
;
1104 unsigned char asc
; /* additional sense code */
1105 unsigned char ascq
; /* additional sense code qualifier */
1106 unsigned long sense_data_size
;
1109 cmd
= (struct scsi_cmnd
*) cp
->scsi_cmd
;
1112 scsi_dma_unmap(cmd
); /* undo the DMA mappings */
1113 if (cp
->Header
.SGTotal
> h
->max_cmd_sg_entries
)
1114 hpsa_unmap_sg_chain_block(h
, cp
);
1116 cmd
->result
= (DID_OK
<< 16); /* host byte */
1117 cmd
->result
|= (COMMAND_COMPLETE
<< 8); /* msg byte */
1118 cmd
->result
|= ei
->ScsiStatus
;
1120 /* copy the sense data whether we need to or not. */
1121 if (SCSI_SENSE_BUFFERSIZE
< sizeof(ei
->SenseInfo
))
1122 sense_data_size
= SCSI_SENSE_BUFFERSIZE
;
1124 sense_data_size
= sizeof(ei
->SenseInfo
);
1125 if (ei
->SenseLen
< sense_data_size
)
1126 sense_data_size
= ei
->SenseLen
;
1128 memcpy(cmd
->sense_buffer
, ei
->SenseInfo
, sense_data_size
);
1129 scsi_set_resid(cmd
, ei
->ResidualCnt
);
1131 if (ei
->CommandStatus
== 0) {
1132 cmd
->scsi_done(cmd
);
1137 /* an error has occurred */
1138 switch (ei
->CommandStatus
) {
1140 case CMD_TARGET_STATUS
:
1141 if (ei
->ScsiStatus
) {
1143 sense_key
= 0xf & ei
->SenseInfo
[2];
1144 /* Get additional sense code */
1145 asc
= ei
->SenseInfo
[12];
1146 /* Get addition sense code qualifier */
1147 ascq
= ei
->SenseInfo
[13];
1150 if (ei
->ScsiStatus
== SAM_STAT_CHECK_CONDITION
) {
1151 if (check_for_unit_attention(h
, cp
)) {
1152 cmd
->result
= DID_SOFT_ERROR
<< 16;
1155 if (sense_key
== ILLEGAL_REQUEST
) {
1157 * SCSI REPORT_LUNS is commonly unsupported on
1158 * Smart Array. Suppress noisy complaint.
1160 if (cp
->Request
.CDB
[0] == REPORT_LUNS
)
1163 /* If ASC/ASCQ indicate Logical Unit
1164 * Not Supported condition,
1166 if ((asc
== 0x25) && (ascq
== 0x0)) {
1167 dev_warn(&h
->pdev
->dev
, "cp %p "
1168 "has check condition\n", cp
);
1173 if (sense_key
== NOT_READY
) {
1174 /* If Sense is Not Ready, Logical Unit
1175 * Not ready, Manual Intervention
1178 if ((asc
== 0x04) && (ascq
== 0x03)) {
1179 dev_warn(&h
->pdev
->dev
, "cp %p "
1180 "has check condition: unit "
1181 "not ready, manual "
1182 "intervention required\n", cp
);
1186 if (sense_key
== ABORTED_COMMAND
) {
1187 /* Aborted command is retryable */
1188 dev_warn(&h
->pdev
->dev
, "cp %p "
1189 "has check condition: aborted command: "
1190 "ASC: 0x%x, ASCQ: 0x%x\n",
1192 cmd
->result
= DID_SOFT_ERROR
<< 16;
1195 /* Must be some other type of check condition */
1196 dev_warn(&h
->pdev
->dev
, "cp %p has check condition: "
1198 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1199 "Returning result: 0x%x, "
1200 "cmd=[%02x %02x %02x %02x %02x "
1201 "%02x %02x %02x %02x %02x %02x "
1202 "%02x %02x %02x %02x %02x]\n",
1203 cp
, sense_key
, asc
, ascq
,
1205 cmd
->cmnd
[0], cmd
->cmnd
[1],
1206 cmd
->cmnd
[2], cmd
->cmnd
[3],
1207 cmd
->cmnd
[4], cmd
->cmnd
[5],
1208 cmd
->cmnd
[6], cmd
->cmnd
[7],
1209 cmd
->cmnd
[8], cmd
->cmnd
[9],
1210 cmd
->cmnd
[10], cmd
->cmnd
[11],
1211 cmd
->cmnd
[12], cmd
->cmnd
[13],
1212 cmd
->cmnd
[14], cmd
->cmnd
[15]);
1217 /* Problem was not a check condition
1218 * Pass it up to the upper layers...
1220 if (ei
->ScsiStatus
) {
1221 dev_warn(&h
->pdev
->dev
, "cp %p has status 0x%x "
1222 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1223 "Returning result: 0x%x\n",
1225 sense_key
, asc
, ascq
,
1227 } else { /* scsi status is zero??? How??? */
1228 dev_warn(&h
->pdev
->dev
, "cp %p SCSI status was 0. "
1229 "Returning no connection.\n", cp
),
1231 /* Ordinarily, this case should never happen,
1232 * but there is a bug in some released firmware
1233 * revisions that allows it to happen if, for
1234 * example, a 4100 backplane loses power and
1235 * the tape drive is in it. We assume that
1236 * it's a fatal error of some kind because we
1237 * can't show that it wasn't. We will make it
1238 * look like selection timeout since that is
1239 * the most common reason for this to occur,
1240 * and it's severe enough.
1243 cmd
->result
= DID_NO_CONNECT
<< 16;
1247 case CMD_DATA_UNDERRUN
: /* let mid layer handle it. */
1249 case CMD_DATA_OVERRUN
:
1250 dev_warn(&h
->pdev
->dev
, "cp %p has"
1251 " completed with data overrun "
1255 /* print_bytes(cp, sizeof(*cp), 1, 0);
1257 /* We get CMD_INVALID if you address a non-existent device
1258 * instead of a selection timeout (no response). You will
1259 * see this if you yank out a drive, then try to access it.
1260 * This is kind of a shame because it means that any other
1261 * CMD_INVALID (e.g. driver bug) will get interpreted as a
1262 * missing target. */
1263 cmd
->result
= DID_NO_CONNECT
<< 16;
1266 case CMD_PROTOCOL_ERR
:
1267 dev_warn(&h
->pdev
->dev
, "cp %p has "
1268 "protocol error \n", cp
);
1270 case CMD_HARDWARE_ERR
:
1271 cmd
->result
= DID_ERROR
<< 16;
1272 dev_warn(&h
->pdev
->dev
, "cp %p had hardware error\n", cp
);
1274 case CMD_CONNECTION_LOST
:
1275 cmd
->result
= DID_ERROR
<< 16;
1276 dev_warn(&h
->pdev
->dev
, "cp %p had connection lost\n", cp
);
1279 cmd
->result
= DID_ABORT
<< 16;
1280 dev_warn(&h
->pdev
->dev
, "cp %p was aborted with status 0x%x\n",
1281 cp
, ei
->ScsiStatus
);
1283 case CMD_ABORT_FAILED
:
1284 cmd
->result
= DID_ERROR
<< 16;
1285 dev_warn(&h
->pdev
->dev
, "cp %p reports abort failed\n", cp
);
1287 case CMD_UNSOLICITED_ABORT
:
1288 cmd
->result
= DID_SOFT_ERROR
<< 16; /* retry the command */
1289 dev_warn(&h
->pdev
->dev
, "cp %p aborted due to an unsolicited "
1293 cmd
->result
= DID_TIME_OUT
<< 16;
1294 dev_warn(&h
->pdev
->dev
, "cp %p timedout\n", cp
);
1296 case CMD_UNABORTABLE
:
1297 cmd
->result
= DID_ERROR
<< 16;
1298 dev_warn(&h
->pdev
->dev
, "Command unabortable\n");
1301 cmd
->result
= DID_ERROR
<< 16;
1302 dev_warn(&h
->pdev
->dev
, "cp %p returned unknown status %x\n",
1303 cp
, ei
->CommandStatus
);
1305 cmd
->scsi_done(cmd
);
1309 static void hpsa_pci_unmap(struct pci_dev
*pdev
,
1310 struct CommandList
*c
, int sg_used
, int data_direction
)
1313 union u64bit addr64
;
1315 for (i
= 0; i
< sg_used
; i
++) {
1316 addr64
.val32
.lower
= c
->SG
[i
].Addr
.lower
;
1317 addr64
.val32
.upper
= c
->SG
[i
].Addr
.upper
;
1318 pci_unmap_single(pdev
, (dma_addr_t
) addr64
.val
, c
->SG
[i
].Len
,
1323 static void hpsa_map_one(struct pci_dev
*pdev
,
1324 struct CommandList
*cp
,
1331 if (buflen
== 0 || data_direction
== PCI_DMA_NONE
) {
1332 cp
->Header
.SGList
= 0;
1333 cp
->Header
.SGTotal
= 0;
1337 addr64
= (u64
) pci_map_single(pdev
, buf
, buflen
, data_direction
);
1338 cp
->SG
[0].Addr
.lower
=
1339 (u32
) (addr64
& (u64
) 0x00000000FFFFFFFF);
1340 cp
->SG
[0].Addr
.upper
=
1341 (u32
) ((addr64
>> 32) & (u64
) 0x00000000FFFFFFFF);
1342 cp
->SG
[0].Len
= buflen
;
1343 cp
->Header
.SGList
= (u8
) 1; /* no. SGs contig in this cmd */
1344 cp
->Header
.SGTotal
= (u16
) 1; /* total sgs in this cmd list */
1347 static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info
*h
,
1348 struct CommandList
*c
)
1350 DECLARE_COMPLETION_ONSTACK(wait
);
1353 enqueue_cmd_and_start_io(h
, c
);
1354 wait_for_completion(&wait
);
1357 static void hpsa_scsi_do_simple_cmd_core_if_no_lockup(struct ctlr_info
*h
,
1358 struct CommandList
*c
)
1360 unsigned long flags
;
1362 /* If controller lockup detected, fake a hardware error. */
1363 spin_lock_irqsave(&h
->lock
, flags
);
1364 if (unlikely(h
->lockup_detected
)) {
1365 spin_unlock_irqrestore(&h
->lock
, flags
);
1366 c
->err_info
->CommandStatus
= CMD_HARDWARE_ERR
;
1368 spin_unlock_irqrestore(&h
->lock
, flags
);
1369 hpsa_scsi_do_simple_cmd_core(h
, c
);
1373 static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info
*h
,
1374 struct CommandList
*c
, int data_direction
)
1376 int retry_count
= 0;
1379 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
1380 hpsa_scsi_do_simple_cmd_core(h
, c
);
1382 } while (check_for_unit_attention(h
, c
) && retry_count
<= 3);
1383 hpsa_pci_unmap(h
->pdev
, c
, 1, data_direction
);
1386 static void hpsa_scsi_interpret_error(struct CommandList
*cp
)
1388 struct ErrorInfo
*ei
;
1389 struct device
*d
= &cp
->h
->pdev
->dev
;
1392 switch (ei
->CommandStatus
) {
1393 case CMD_TARGET_STATUS
:
1394 dev_warn(d
, "cmd %p has completed with errors\n", cp
);
1395 dev_warn(d
, "cmd %p has SCSI Status = %x\n", cp
,
1397 if (ei
->ScsiStatus
== 0)
1398 dev_warn(d
, "SCSI status is abnormally zero. "
1399 "(probably indicates selection timeout "
1400 "reported incorrectly due to a known "
1401 "firmware bug, circa July, 2001.)\n");
1403 case CMD_DATA_UNDERRUN
: /* let mid layer handle it. */
1404 dev_info(d
, "UNDERRUN\n");
1406 case CMD_DATA_OVERRUN
:
1407 dev_warn(d
, "cp %p has completed with data overrun\n", cp
);
1410 /* controller unfortunately reports SCSI passthru's
1411 * to non-existent targets as invalid commands.
1413 dev_warn(d
, "cp %p is reported invalid (probably means "
1414 "target device no longer present)\n", cp
);
1415 /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0);
1419 case CMD_PROTOCOL_ERR
:
1420 dev_warn(d
, "cp %p has protocol error \n", cp
);
1422 case CMD_HARDWARE_ERR
:
1423 /* cmd->result = DID_ERROR << 16; */
1424 dev_warn(d
, "cp %p had hardware error\n", cp
);
1426 case CMD_CONNECTION_LOST
:
1427 dev_warn(d
, "cp %p had connection lost\n", cp
);
1430 dev_warn(d
, "cp %p was aborted\n", cp
);
1432 case CMD_ABORT_FAILED
:
1433 dev_warn(d
, "cp %p reports abort failed\n", cp
);
1435 case CMD_UNSOLICITED_ABORT
:
1436 dev_warn(d
, "cp %p aborted due to an unsolicited abort\n", cp
);
1439 dev_warn(d
, "cp %p timed out\n", cp
);
1441 case CMD_UNABORTABLE
:
1442 dev_warn(d
, "Command unabortable\n");
1445 dev_warn(d
, "cp %p returned unknown status %x\n", cp
,
1450 static int hpsa_scsi_do_inquiry(struct ctlr_info
*h
, unsigned char *scsi3addr
,
1451 unsigned char page
, unsigned char *buf
,
1452 unsigned char bufsize
)
1455 struct CommandList
*c
;
1456 struct ErrorInfo
*ei
;
1458 c
= cmd_special_alloc(h
);
1460 if (c
== NULL
) { /* trouble... */
1461 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1465 fill_cmd(c
, HPSA_INQUIRY
, h
, buf
, bufsize
, page
, scsi3addr
, TYPE_CMD
);
1466 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_FROMDEVICE
);
1468 if (ei
->CommandStatus
!= 0 && ei
->CommandStatus
!= CMD_DATA_UNDERRUN
) {
1469 hpsa_scsi_interpret_error(c
);
1472 cmd_special_free(h
, c
);
1476 static int hpsa_send_reset(struct ctlr_info
*h
, unsigned char *scsi3addr
)
1479 struct CommandList
*c
;
1480 struct ErrorInfo
*ei
;
1482 c
= cmd_special_alloc(h
);
1484 if (c
== NULL
) { /* trouble... */
1485 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1489 fill_cmd(c
, HPSA_DEVICE_RESET_MSG
, h
, NULL
, 0, 0, scsi3addr
, TYPE_MSG
);
1490 hpsa_scsi_do_simple_cmd_core(h
, c
);
1491 /* no unmap needed here because no data xfer. */
1494 if (ei
->CommandStatus
!= 0) {
1495 hpsa_scsi_interpret_error(c
);
1498 cmd_special_free(h
, c
);
1502 static void hpsa_get_raid_level(struct ctlr_info
*h
,
1503 unsigned char *scsi3addr
, unsigned char *raid_level
)
1508 *raid_level
= RAID_UNKNOWN
;
1509 buf
= kzalloc(64, GFP_KERNEL
);
1512 rc
= hpsa_scsi_do_inquiry(h
, scsi3addr
, 0xC1, buf
, 64);
1514 *raid_level
= buf
[8];
1515 if (*raid_level
> RAID_UNKNOWN
)
1516 *raid_level
= RAID_UNKNOWN
;
1521 /* Get the device id from inquiry page 0x83 */
1522 static int hpsa_get_device_id(struct ctlr_info
*h
, unsigned char *scsi3addr
,
1523 unsigned char *device_id
, int buflen
)
1530 buf
= kzalloc(64, GFP_KERNEL
);
1533 rc
= hpsa_scsi_do_inquiry(h
, scsi3addr
, 0x83, buf
, 64);
1535 memcpy(device_id
, &buf
[8], buflen
);
1540 static int hpsa_scsi_do_report_luns(struct ctlr_info
*h
, int logical
,
1541 struct ReportLUNdata
*buf
, int bufsize
,
1542 int extended_response
)
1545 struct CommandList
*c
;
1546 unsigned char scsi3addr
[8];
1547 struct ErrorInfo
*ei
;
1549 c
= cmd_special_alloc(h
);
1550 if (c
== NULL
) { /* trouble... */
1551 dev_err(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1554 /* address the controller */
1555 memset(scsi3addr
, 0, sizeof(scsi3addr
));
1556 fill_cmd(c
, logical
? HPSA_REPORT_LOG
: HPSA_REPORT_PHYS
, h
,
1557 buf
, bufsize
, 0, scsi3addr
, TYPE_CMD
);
1558 if (extended_response
)
1559 c
->Request
.CDB
[1] = extended_response
;
1560 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_FROMDEVICE
);
1562 if (ei
->CommandStatus
!= 0 &&
1563 ei
->CommandStatus
!= CMD_DATA_UNDERRUN
) {
1564 hpsa_scsi_interpret_error(c
);
1567 cmd_special_free(h
, c
);
1571 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info
*h
,
1572 struct ReportLUNdata
*buf
,
1573 int bufsize
, int extended_response
)
1575 return hpsa_scsi_do_report_luns(h
, 0, buf
, bufsize
, extended_response
);
1578 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info
*h
,
1579 struct ReportLUNdata
*buf
, int bufsize
)
1581 return hpsa_scsi_do_report_luns(h
, 1, buf
, bufsize
, 0);
1584 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t
*device
,
1585 int bus
, int target
, int lun
)
1588 device
->target
= target
;
1592 static int hpsa_update_device_info(struct ctlr_info
*h
,
1593 unsigned char scsi3addr
[], struct hpsa_scsi_dev_t
*this_device
,
1594 unsigned char *is_OBDR_device
)
1597 #define OBDR_SIG_OFFSET 43
1598 #define OBDR_TAPE_SIG "$DR-10"
1599 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
1600 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
1602 unsigned char *inq_buff
;
1603 unsigned char *obdr_sig
;
1605 inq_buff
= kzalloc(OBDR_TAPE_INQ_SIZE
, GFP_KERNEL
);
1609 /* Do an inquiry to the device to see what it is. */
1610 if (hpsa_scsi_do_inquiry(h
, scsi3addr
, 0, inq_buff
,
1611 (unsigned char) OBDR_TAPE_INQ_SIZE
) != 0) {
1612 /* Inquiry failed (msg printed already) */
1613 dev_err(&h
->pdev
->dev
,
1614 "hpsa_update_device_info: inquiry failed\n");
1618 this_device
->devtype
= (inq_buff
[0] & 0x1f);
1619 memcpy(this_device
->scsi3addr
, scsi3addr
, 8);
1620 memcpy(this_device
->vendor
, &inq_buff
[8],
1621 sizeof(this_device
->vendor
));
1622 memcpy(this_device
->model
, &inq_buff
[16],
1623 sizeof(this_device
->model
));
1624 memset(this_device
->device_id
, 0,
1625 sizeof(this_device
->device_id
));
1626 hpsa_get_device_id(h
, scsi3addr
, this_device
->device_id
,
1627 sizeof(this_device
->device_id
));
1629 if (this_device
->devtype
== TYPE_DISK
&&
1630 is_logical_dev_addr_mode(scsi3addr
))
1631 hpsa_get_raid_level(h
, scsi3addr
, &this_device
->raid_level
);
1633 this_device
->raid_level
= RAID_UNKNOWN
;
1635 if (is_OBDR_device
) {
1636 /* See if this is a One-Button-Disaster-Recovery device
1637 * by looking for "$DR-10" at offset 43 in inquiry data.
1639 obdr_sig
= &inq_buff
[OBDR_SIG_OFFSET
];
1640 *is_OBDR_device
= (this_device
->devtype
== TYPE_ROM
&&
1641 strncmp(obdr_sig
, OBDR_TAPE_SIG
,
1642 OBDR_SIG_LEN
) == 0);
1653 static unsigned char *ext_target_model
[] = {
1662 static int is_ext_target(struct ctlr_info
*h
, struct hpsa_scsi_dev_t
*device
)
1666 for (i
= 0; ext_target_model
[i
]; i
++)
1667 if (strncmp(device
->model
, ext_target_model
[i
],
1668 strlen(ext_target_model
[i
])) == 0)
1673 /* Helper function to assign bus, target, lun mapping of devices.
1674 * Puts non-external target logical volumes on bus 0, external target logical
1675 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
1676 * Logical drive target and lun are assigned at this time, but
1677 * physical device lun and target assignment are deferred (assigned
1678 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
1680 static void figure_bus_target_lun(struct ctlr_info
*h
,
1681 u8
*lunaddrbytes
, struct hpsa_scsi_dev_t
*device
)
1683 u32 lunid
= le32_to_cpu(*((__le32
*) lunaddrbytes
));
1685 if (!is_logical_dev_addr_mode(lunaddrbytes
)) {
1686 /* physical device, target and lun filled in later */
1687 if (is_hba_lunid(lunaddrbytes
))
1688 hpsa_set_bus_target_lun(device
, 3, 0, lunid
& 0x3fff);
1690 /* defer target, lun assignment for physical devices */
1691 hpsa_set_bus_target_lun(device
, 2, -1, -1);
1694 /* It's a logical device */
1695 if (is_ext_target(h
, device
)) {
1696 /* external target way, put logicals on bus 1
1697 * and match target/lun numbers box
1698 * reports, other smart array, bus 0, target 0, match lunid
1700 hpsa_set_bus_target_lun(device
,
1701 1, (lunid
>> 16) & 0x3fff, lunid
& 0x00ff);
1704 hpsa_set_bus_target_lun(device
, 0, 0, lunid
& 0x3fff);
1708 * If there is no lun 0 on a target, linux won't find any devices.
1709 * For the external targets (arrays), we have to manually detect the enclosure
1710 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
1711 * it for some reason. *tmpdevice is the target we're adding,
1712 * this_device is a pointer into the current element of currentsd[]
1713 * that we're building up in update_scsi_devices(), below.
1714 * lunzerobits is a bitmap that tracks which targets already have a
1716 * Returns 1 if an enclosure was added, 0 if not.
1718 static int add_ext_target_dev(struct ctlr_info
*h
,
1719 struct hpsa_scsi_dev_t
*tmpdevice
,
1720 struct hpsa_scsi_dev_t
*this_device
, u8
*lunaddrbytes
,
1721 unsigned long lunzerobits
[], int *n_ext_target_devs
)
1723 unsigned char scsi3addr
[8];
1725 if (test_bit(tmpdevice
->target
, lunzerobits
))
1726 return 0; /* There is already a lun 0 on this target. */
1728 if (!is_logical_dev_addr_mode(lunaddrbytes
))
1729 return 0; /* It's the logical targets that may lack lun 0. */
1731 if (!is_ext_target(h
, tmpdevice
))
1732 return 0; /* Only external target devices have this problem. */
1734 if (tmpdevice
->lun
== 0) /* if lun is 0, then we have a lun 0. */
1737 memset(scsi3addr
, 0, 8);
1738 scsi3addr
[3] = tmpdevice
->target
;
1739 if (is_hba_lunid(scsi3addr
))
1740 return 0; /* Don't add the RAID controller here. */
1742 if (is_scsi_rev_5(h
))
1743 return 0; /* p1210m doesn't need to do this. */
1745 if (*n_ext_target_devs
>= MAX_EXT_TARGETS
) {
1746 dev_warn(&h
->pdev
->dev
, "Maximum number of external "
1747 "target devices exceeded. Check your hardware "
1752 if (hpsa_update_device_info(h
, scsi3addr
, this_device
, NULL
))
1754 (*n_ext_target_devs
)++;
1755 hpsa_set_bus_target_lun(this_device
,
1756 tmpdevice
->bus
, tmpdevice
->target
, 0);
1757 set_bit(tmpdevice
->target
, lunzerobits
);
1762 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
1763 * logdev. The number of luns in physdev and logdev are returned in
1764 * *nphysicals and *nlogicals, respectively.
1765 * Returns 0 on success, -1 otherwise.
1767 static int hpsa_gather_lun_info(struct ctlr_info
*h
,
1769 struct ReportLUNdata
*physdev
, u32
*nphysicals
,
1770 struct ReportLUNdata
*logdev
, u32
*nlogicals
)
1772 if (hpsa_scsi_do_report_phys_luns(h
, physdev
, reportlunsize
, 0)) {
1773 dev_err(&h
->pdev
->dev
, "report physical LUNs failed.\n");
1776 *nphysicals
= be32_to_cpu(*((__be32
*)physdev
->LUNListLength
)) / 8;
1777 if (*nphysicals
> HPSA_MAX_PHYS_LUN
) {
1778 dev_warn(&h
->pdev
->dev
, "maximum physical LUNs (%d) exceeded."
1779 " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN
,
1780 *nphysicals
- HPSA_MAX_PHYS_LUN
);
1781 *nphysicals
= HPSA_MAX_PHYS_LUN
;
1783 if (hpsa_scsi_do_report_log_luns(h
, logdev
, reportlunsize
)) {
1784 dev_err(&h
->pdev
->dev
, "report logical LUNs failed.\n");
1787 *nlogicals
= be32_to_cpu(*((__be32
*) logdev
->LUNListLength
)) / 8;
1788 /* Reject Logicals in excess of our max capability. */
1789 if (*nlogicals
> HPSA_MAX_LUN
) {
1790 dev_warn(&h
->pdev
->dev
,
1791 "maximum logical LUNs (%d) exceeded. "
1792 "%d LUNs ignored.\n", HPSA_MAX_LUN
,
1793 *nlogicals
- HPSA_MAX_LUN
);
1794 *nlogicals
= HPSA_MAX_LUN
;
1796 if (*nlogicals
+ *nphysicals
> HPSA_MAX_PHYS_LUN
) {
1797 dev_warn(&h
->pdev
->dev
,
1798 "maximum logical + physical LUNs (%d) exceeded. "
1799 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN
,
1800 *nphysicals
+ *nlogicals
- HPSA_MAX_PHYS_LUN
);
1801 *nlogicals
= HPSA_MAX_PHYS_LUN
- *nphysicals
;
1806 u8
*figure_lunaddrbytes(struct ctlr_info
*h
, int raid_ctlr_position
, int i
,
1807 int nphysicals
, int nlogicals
, struct ReportLUNdata
*physdev_list
,
1808 struct ReportLUNdata
*logdev_list
)
1810 /* Helper function, figure out where the LUN ID info is coming from
1811 * given index i, lists of physical and logical devices, where in
1812 * the list the raid controller is supposed to appear (first or last)
1815 int logicals_start
= nphysicals
+ (raid_ctlr_position
== 0);
1816 int last_device
= nphysicals
+ nlogicals
+ (raid_ctlr_position
== 0);
1818 if (i
== raid_ctlr_position
)
1819 return RAID_CTLR_LUNID
;
1821 if (i
< logicals_start
)
1822 return &physdev_list
->LUN
[i
- (raid_ctlr_position
== 0)][0];
1824 if (i
< last_device
)
1825 return &logdev_list
->LUN
[i
- nphysicals
-
1826 (raid_ctlr_position
== 0)][0];
1831 static void hpsa_update_scsi_devices(struct ctlr_info
*h
, int hostno
)
1833 /* the idea here is we could get notified
1834 * that some devices have changed, so we do a report
1835 * physical luns and report logical luns cmd, and adjust
1836 * our list of devices accordingly.
1838 * The scsi3addr's of devices won't change so long as the
1839 * adapter is not reset. That means we can rescan and
1840 * tell which devices we already know about, vs. new
1841 * devices, vs. disappearing devices.
1843 struct ReportLUNdata
*physdev_list
= NULL
;
1844 struct ReportLUNdata
*logdev_list
= NULL
;
1847 u32 ndev_allocated
= 0;
1848 struct hpsa_scsi_dev_t
**currentsd
, *this_device
, *tmpdevice
;
1850 int reportlunsize
= sizeof(*physdev_list
) + HPSA_MAX_PHYS_LUN
* 8;
1851 int i
, n_ext_target_devs
, ndevs_to_allocate
;
1852 int raid_ctlr_position
;
1853 DECLARE_BITMAP(lunzerobits
, MAX_EXT_TARGETS
);
1855 currentsd
= kzalloc(sizeof(*currentsd
) * HPSA_MAX_DEVICES
, GFP_KERNEL
);
1856 physdev_list
= kzalloc(reportlunsize
, GFP_KERNEL
);
1857 logdev_list
= kzalloc(reportlunsize
, GFP_KERNEL
);
1858 tmpdevice
= kzalloc(sizeof(*tmpdevice
), GFP_KERNEL
);
1860 if (!currentsd
|| !physdev_list
|| !logdev_list
|| !tmpdevice
) {
1861 dev_err(&h
->pdev
->dev
, "out of memory\n");
1864 memset(lunzerobits
, 0, sizeof(lunzerobits
));
1866 if (hpsa_gather_lun_info(h
, reportlunsize
, physdev_list
, &nphysicals
,
1867 logdev_list
, &nlogicals
))
1870 /* We might see up to the maximum number of logical and physical disks
1871 * plus external target devices, and a device for the local RAID
1874 ndevs_to_allocate
= nphysicals
+ nlogicals
+ MAX_EXT_TARGETS
+ 1;
1876 /* Allocate the per device structures */
1877 for (i
= 0; i
< ndevs_to_allocate
; i
++) {
1878 if (i
>= HPSA_MAX_DEVICES
) {
1879 dev_warn(&h
->pdev
->dev
, "maximum devices (%d) exceeded."
1880 " %d devices ignored.\n", HPSA_MAX_DEVICES
,
1881 ndevs_to_allocate
- HPSA_MAX_DEVICES
);
1885 currentsd
[i
] = kzalloc(sizeof(*currentsd
[i
]), GFP_KERNEL
);
1886 if (!currentsd
[i
]) {
1887 dev_warn(&h
->pdev
->dev
, "out of memory at %s:%d\n",
1888 __FILE__
, __LINE__
);
1894 if (unlikely(is_scsi_rev_5(h
)))
1895 raid_ctlr_position
= 0;
1897 raid_ctlr_position
= nphysicals
+ nlogicals
;
1899 /* adjust our table of devices */
1900 n_ext_target_devs
= 0;
1901 for (i
= 0; i
< nphysicals
+ nlogicals
+ 1; i
++) {
1902 u8
*lunaddrbytes
, is_OBDR
= 0;
1904 /* Figure out where the LUN ID info is coming from */
1905 lunaddrbytes
= figure_lunaddrbytes(h
, raid_ctlr_position
,
1906 i
, nphysicals
, nlogicals
, physdev_list
, logdev_list
);
1907 /* skip masked physical devices. */
1908 if (lunaddrbytes
[3] & 0xC0 &&
1909 i
< nphysicals
+ (raid_ctlr_position
== 0))
1912 /* Get device type, vendor, model, device id */
1913 if (hpsa_update_device_info(h
, lunaddrbytes
, tmpdevice
,
1915 continue; /* skip it if we can't talk to it. */
1916 figure_bus_target_lun(h
, lunaddrbytes
, tmpdevice
);
1917 this_device
= currentsd
[ncurrent
];
1920 * For external target devices, we have to insert a LUN 0 which
1921 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
1922 * is nonetheless an enclosure device there. We have to
1923 * present that otherwise linux won't find anything if
1924 * there is no lun 0.
1926 if (add_ext_target_dev(h
, tmpdevice
, this_device
,
1927 lunaddrbytes
, lunzerobits
,
1928 &n_ext_target_devs
)) {
1930 this_device
= currentsd
[ncurrent
];
1933 *this_device
= *tmpdevice
;
1935 switch (this_device
->devtype
) {
1937 /* We don't *really* support actual CD-ROM devices,
1938 * just "One Button Disaster Recovery" tape drive
1939 * which temporarily pretends to be a CD-ROM drive.
1940 * So we check that the device is really an OBDR tape
1941 * device by checking for "$DR-10" in bytes 43-48 of
1953 case TYPE_MEDIUM_CHANGER
:
1957 /* Only present the Smartarray HBA as a RAID controller.
1958 * If it's a RAID controller other than the HBA itself
1959 * (an external RAID controller, MSA500 or similar)
1962 if (!is_hba_lunid(lunaddrbytes
))
1969 if (ncurrent
>= HPSA_MAX_DEVICES
)
1972 adjust_hpsa_scsi_table(h
, hostno
, currentsd
, ncurrent
);
1975 for (i
= 0; i
< ndev_allocated
; i
++)
1976 kfree(currentsd
[i
]);
1978 kfree(physdev_list
);
1982 /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
1983 * dma mapping and fills in the scatter gather entries of the
1986 static int hpsa_scatter_gather(struct ctlr_info
*h
,
1987 struct CommandList
*cp
,
1988 struct scsi_cmnd
*cmd
)
1991 struct scatterlist
*sg
;
1993 int use_sg
, i
, sg_index
, chained
;
1994 struct SGDescriptor
*curr_sg
;
1996 BUG_ON(scsi_sg_count(cmd
) > h
->maxsgentries
);
1998 use_sg
= scsi_dma_map(cmd
);
2003 goto sglist_finished
;
2008 scsi_for_each_sg(cmd
, sg
, use_sg
, i
) {
2009 if (i
== h
->max_cmd_sg_entries
- 1 &&
2010 use_sg
> h
->max_cmd_sg_entries
) {
2012 curr_sg
= h
->cmd_sg_list
[cp
->cmdindex
];
2015 addr64
= (u64
) sg_dma_address(sg
);
2016 len
= sg_dma_len(sg
);
2017 curr_sg
->Addr
.lower
= (u32
) (addr64
& 0x0FFFFFFFFULL
);
2018 curr_sg
->Addr
.upper
= (u32
) ((addr64
>> 32) & 0x0FFFFFFFFULL
);
2020 curr_sg
->Ext
= 0; /* we are not chaining */
2024 if (use_sg
+ chained
> h
->maxSG
)
2025 h
->maxSG
= use_sg
+ chained
;
2028 cp
->Header
.SGList
= h
->max_cmd_sg_entries
;
2029 cp
->Header
.SGTotal
= (u16
) (use_sg
+ 1);
2030 hpsa_map_sg_chain_block(h
, cp
);
2036 cp
->Header
.SGList
= (u8
) use_sg
; /* no. SGs contig in this cmd */
2037 cp
->Header
.SGTotal
= (u16
) use_sg
; /* total sgs in this cmd list */
2042 static int hpsa_scsi_queue_command_lck(struct scsi_cmnd
*cmd
,
2043 void (*done
)(struct scsi_cmnd
*))
2045 struct ctlr_info
*h
;
2046 struct hpsa_scsi_dev_t
*dev
;
2047 unsigned char scsi3addr
[8];
2048 struct CommandList
*c
;
2049 unsigned long flags
;
2051 /* Get the ptr to our adapter structure out of cmd->host. */
2052 h
= sdev_to_hba(cmd
->device
);
2053 dev
= cmd
->device
->hostdata
;
2055 cmd
->result
= DID_NO_CONNECT
<< 16;
2059 memcpy(scsi3addr
, dev
->scsi3addr
, sizeof(scsi3addr
));
2061 spin_lock_irqsave(&h
->lock
, flags
);
2062 if (unlikely(h
->lockup_detected
)) {
2063 spin_unlock_irqrestore(&h
->lock
, flags
);
2064 cmd
->result
= DID_ERROR
<< 16;
2068 /* Need a lock as this is being allocated from the pool */
2070 spin_unlock_irqrestore(&h
->lock
, flags
);
2071 if (c
== NULL
) { /* trouble... */
2072 dev_err(&h
->pdev
->dev
, "cmd_alloc returned NULL!\n");
2073 return SCSI_MLQUEUE_HOST_BUSY
;
2076 /* Fill in the command list header */
2078 cmd
->scsi_done
= done
; /* save this for use by completion code */
2080 /* save c in case we have to abort it */
2081 cmd
->host_scribble
= (unsigned char *) c
;
2083 c
->cmd_type
= CMD_SCSI
;
2085 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
2086 memcpy(&c
->Header
.LUN
.LunAddrBytes
[0], &scsi3addr
[0], 8);
2087 c
->Header
.Tag
.lower
= (c
->cmdindex
<< DIRECT_LOOKUP_SHIFT
);
2088 c
->Header
.Tag
.lower
|= DIRECT_LOOKUP_BIT
;
2090 /* Fill in the request block... */
2092 c
->Request
.Timeout
= 0;
2093 memset(c
->Request
.CDB
, 0, sizeof(c
->Request
.CDB
));
2094 BUG_ON(cmd
->cmd_len
> sizeof(c
->Request
.CDB
));
2095 c
->Request
.CDBLen
= cmd
->cmd_len
;
2096 memcpy(c
->Request
.CDB
, cmd
->cmnd
, cmd
->cmd_len
);
2097 c
->Request
.Type
.Type
= TYPE_CMD
;
2098 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2099 switch (cmd
->sc_data_direction
) {
2101 c
->Request
.Type
.Direction
= XFER_WRITE
;
2103 case DMA_FROM_DEVICE
:
2104 c
->Request
.Type
.Direction
= XFER_READ
;
2107 c
->Request
.Type
.Direction
= XFER_NONE
;
2109 case DMA_BIDIRECTIONAL
:
2110 /* This can happen if a buggy application does a scsi passthru
2111 * and sets both inlen and outlen to non-zero. ( see
2112 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
2115 c
->Request
.Type
.Direction
= XFER_RSVD
;
2116 /* This is technically wrong, and hpsa controllers should
2117 * reject it with CMD_INVALID, which is the most correct
2118 * response, but non-fibre backends appear to let it
2119 * slide by, and give the same results as if this field
2120 * were set correctly. Either way is acceptable for
2121 * our purposes here.
2127 dev_err(&h
->pdev
->dev
, "unknown data direction: %d\n",
2128 cmd
->sc_data_direction
);
2133 if (hpsa_scatter_gather(h
, c
, cmd
) < 0) { /* Fill SG list */
2135 return SCSI_MLQUEUE_HOST_BUSY
;
2137 enqueue_cmd_and_start_io(h
, c
);
2138 /* the cmd'll come back via intr handler in complete_scsi_command() */
2142 static DEF_SCSI_QCMD(hpsa_scsi_queue_command
)
2144 static void hpsa_scan_start(struct Scsi_Host
*sh
)
2146 struct ctlr_info
*h
= shost_to_hba(sh
);
2147 unsigned long flags
;
2149 /* wait until any scan already in progress is finished. */
2151 spin_lock_irqsave(&h
->scan_lock
, flags
);
2152 if (h
->scan_finished
)
2154 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2155 wait_event(h
->scan_wait_queue
, h
->scan_finished
);
2156 /* Note: We don't need to worry about a race between this
2157 * thread and driver unload because the midlayer will
2158 * have incremented the reference count, so unload won't
2159 * happen if we're in here.
2162 h
->scan_finished
= 0; /* mark scan as in progress */
2163 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2165 hpsa_update_scsi_devices(h
, h
->scsi_host
->host_no
);
2167 spin_lock_irqsave(&h
->scan_lock
, flags
);
2168 h
->scan_finished
= 1; /* mark scan as finished. */
2169 wake_up_all(&h
->scan_wait_queue
);
2170 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2173 static int hpsa_scan_finished(struct Scsi_Host
*sh
,
2174 unsigned long elapsed_time
)
2176 struct ctlr_info
*h
= shost_to_hba(sh
);
2177 unsigned long flags
;
2180 spin_lock_irqsave(&h
->scan_lock
, flags
);
2181 finished
= h
->scan_finished
;
2182 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2186 static int hpsa_change_queue_depth(struct scsi_device
*sdev
,
2187 int qdepth
, int reason
)
2189 struct ctlr_info
*h
= sdev_to_hba(sdev
);
2191 if (reason
!= SCSI_QDEPTH_DEFAULT
)
2197 if (qdepth
> h
->nr_cmds
)
2198 qdepth
= h
->nr_cmds
;
2199 scsi_adjust_queue_depth(sdev
, scsi_get_tag_type(sdev
), qdepth
);
2200 return sdev
->queue_depth
;
2203 static void hpsa_unregister_scsi(struct ctlr_info
*h
)
2205 /* we are being forcibly unloaded, and may not refuse. */
2206 scsi_remove_host(h
->scsi_host
);
2207 scsi_host_put(h
->scsi_host
);
2208 h
->scsi_host
= NULL
;
2211 static int hpsa_register_scsi(struct ctlr_info
*h
)
2213 struct Scsi_Host
*sh
;
2216 sh
= scsi_host_alloc(&hpsa_driver_template
, sizeof(h
));
2223 sh
->max_channel
= 3;
2224 sh
->max_cmd_len
= MAX_COMMAND_SIZE
;
2225 sh
->max_lun
= HPSA_MAX_LUN
;
2226 sh
->max_id
= HPSA_MAX_LUN
;
2227 sh
->can_queue
= h
->nr_cmds
;
2228 sh
->cmd_per_lun
= h
->nr_cmds
;
2229 sh
->sg_tablesize
= h
->maxsgentries
;
2231 sh
->hostdata
[0] = (unsigned long) h
;
2232 sh
->irq
= h
->intr
[h
->intr_mode
];
2233 sh
->unique_id
= sh
->irq
;
2234 error
= scsi_add_host(sh
, &h
->pdev
->dev
);
2241 dev_err(&h
->pdev
->dev
, "%s: scsi_add_host"
2242 " failed for controller %d\n", __func__
, h
->ctlr
);
2246 dev_err(&h
->pdev
->dev
, "%s: scsi_host_alloc"
2247 " failed for controller %d\n", __func__
, h
->ctlr
);
2251 static int wait_for_device_to_become_ready(struct ctlr_info
*h
,
2252 unsigned char lunaddr
[])
2256 int waittime
= 1; /* seconds */
2257 struct CommandList
*c
;
2259 c
= cmd_special_alloc(h
);
2261 dev_warn(&h
->pdev
->dev
, "out of memory in "
2262 "wait_for_device_to_become_ready.\n");
2266 /* Send test unit ready until device ready, or give up. */
2267 while (count
< HPSA_TUR_RETRY_LIMIT
) {
2269 /* Wait for a bit. do this first, because if we send
2270 * the TUR right away, the reset will just abort it.
2272 msleep(1000 * waittime
);
2275 /* Increase wait time with each try, up to a point. */
2276 if (waittime
< HPSA_MAX_WAIT_INTERVAL_SECS
)
2277 waittime
= waittime
* 2;
2279 /* Send the Test Unit Ready */
2280 fill_cmd(c
, TEST_UNIT_READY
, h
, NULL
, 0, 0, lunaddr
, TYPE_CMD
);
2281 hpsa_scsi_do_simple_cmd_core(h
, c
);
2282 /* no unmap needed here because no data xfer. */
2284 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2287 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
2288 c
->err_info
->ScsiStatus
== SAM_STAT_CHECK_CONDITION
&&
2289 (c
->err_info
->SenseInfo
[2] == NO_SENSE
||
2290 c
->err_info
->SenseInfo
[2] == UNIT_ATTENTION
))
2293 dev_warn(&h
->pdev
->dev
, "waiting %d secs "
2294 "for device to become ready.\n", waittime
);
2295 rc
= 1; /* device not ready. */
2299 dev_warn(&h
->pdev
->dev
, "giving up on device.\n");
2301 dev_warn(&h
->pdev
->dev
, "device is ready.\n");
2303 cmd_special_free(h
, c
);
2307 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
2308 * complaining. Doing a host- or bus-reset can't do anything good here.
2310 static int hpsa_eh_device_reset_handler(struct scsi_cmnd
*scsicmd
)
2313 struct ctlr_info
*h
;
2314 struct hpsa_scsi_dev_t
*dev
;
2316 /* find the controller to which the command to be aborted was sent */
2317 h
= sdev_to_hba(scsicmd
->device
);
2318 if (h
== NULL
) /* paranoia */
2320 dev
= scsicmd
->device
->hostdata
;
2322 dev_err(&h
->pdev
->dev
, "hpsa_eh_device_reset_handler: "
2323 "device lookup failed.\n");
2326 dev_warn(&h
->pdev
->dev
, "resetting device %d:%d:%d:%d\n",
2327 h
->scsi_host
->host_no
, dev
->bus
, dev
->target
, dev
->lun
);
2328 /* send a reset to the SCSI LUN which the command was sent to */
2329 rc
= hpsa_send_reset(h
, dev
->scsi3addr
);
2330 if (rc
== 0 && wait_for_device_to_become_ready(h
, dev
->scsi3addr
) == 0)
2333 dev_warn(&h
->pdev
->dev
, "resetting device failed.\n");
2338 * For operations that cannot sleep, a command block is allocated at init,
2339 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
2340 * which ones are free or in use. Lock must be held when calling this.
2341 * cmd_free() is the complement.
2343 static struct CommandList
*cmd_alloc(struct ctlr_info
*h
)
2345 struct CommandList
*c
;
2347 union u64bit temp64
;
2348 dma_addr_t cmd_dma_handle
, err_dma_handle
;
2351 i
= find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
);
2352 if (i
== h
->nr_cmds
)
2354 } while (test_and_set_bit
2355 (i
& (BITS_PER_LONG
- 1),
2356 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
)) != 0);
2357 c
= h
->cmd_pool
+ i
;
2358 memset(c
, 0, sizeof(*c
));
2359 cmd_dma_handle
= h
->cmd_pool_dhandle
2361 c
->err_info
= h
->errinfo_pool
+ i
;
2362 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
2363 err_dma_handle
= h
->errinfo_pool_dhandle
2364 + i
* sizeof(*c
->err_info
);
2369 INIT_LIST_HEAD(&c
->list
);
2370 c
->busaddr
= (u32
) cmd_dma_handle
;
2371 temp64
.val
= (u64
) err_dma_handle
;
2372 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
2373 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
2374 c
->ErrDesc
.Len
= sizeof(*c
->err_info
);
2380 /* For operations that can wait for kmalloc to possibly sleep,
2381 * this routine can be called. Lock need not be held to call
2382 * cmd_special_alloc. cmd_special_free() is the complement.
2384 static struct CommandList
*cmd_special_alloc(struct ctlr_info
*h
)
2386 struct CommandList
*c
;
2387 union u64bit temp64
;
2388 dma_addr_t cmd_dma_handle
, err_dma_handle
;
2390 c
= pci_alloc_consistent(h
->pdev
, sizeof(*c
), &cmd_dma_handle
);
2393 memset(c
, 0, sizeof(*c
));
2397 c
->err_info
= pci_alloc_consistent(h
->pdev
, sizeof(*c
->err_info
),
2400 if (c
->err_info
== NULL
) {
2401 pci_free_consistent(h
->pdev
,
2402 sizeof(*c
), c
, cmd_dma_handle
);
2405 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
2407 INIT_LIST_HEAD(&c
->list
);
2408 c
->busaddr
= (u32
) cmd_dma_handle
;
2409 temp64
.val
= (u64
) err_dma_handle
;
2410 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
2411 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
2412 c
->ErrDesc
.Len
= sizeof(*c
->err_info
);
2418 static void cmd_free(struct ctlr_info
*h
, struct CommandList
*c
)
2422 i
= c
- h
->cmd_pool
;
2423 clear_bit(i
& (BITS_PER_LONG
- 1),
2424 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
));
2428 static void cmd_special_free(struct ctlr_info
*h
, struct CommandList
*c
)
2430 union u64bit temp64
;
2432 temp64
.val32
.lower
= c
->ErrDesc
.Addr
.lower
;
2433 temp64
.val32
.upper
= c
->ErrDesc
.Addr
.upper
;
2434 pci_free_consistent(h
->pdev
, sizeof(*c
->err_info
),
2435 c
->err_info
, (dma_addr_t
) temp64
.val
);
2436 pci_free_consistent(h
->pdev
, sizeof(*c
),
2437 c
, (dma_addr_t
) (c
->busaddr
& DIRECT_LOOKUP_MASK
));
2440 #ifdef CONFIG_COMPAT
2442 static int hpsa_ioctl32_passthru(struct scsi_device
*dev
, int cmd
, void *arg
)
2444 IOCTL32_Command_struct __user
*arg32
=
2445 (IOCTL32_Command_struct __user
*) arg
;
2446 IOCTL_Command_struct arg64
;
2447 IOCTL_Command_struct __user
*p
= compat_alloc_user_space(sizeof(arg64
));
2451 memset(&arg64
, 0, sizeof(arg64
));
2453 err
|= copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
2454 sizeof(arg64
.LUN_info
));
2455 err
|= copy_from_user(&arg64
.Request
, &arg32
->Request
,
2456 sizeof(arg64
.Request
));
2457 err
|= copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
2458 sizeof(arg64
.error_info
));
2459 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
2460 err
|= get_user(cp
, &arg32
->buf
);
2461 arg64
.buf
= compat_ptr(cp
);
2462 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
2467 err
= hpsa_ioctl(dev
, CCISS_PASSTHRU
, (void *)p
);
2470 err
|= copy_in_user(&arg32
->error_info
, &p
->error_info
,
2471 sizeof(arg32
->error_info
));
2477 static int hpsa_ioctl32_big_passthru(struct scsi_device
*dev
,
2480 BIG_IOCTL32_Command_struct __user
*arg32
=
2481 (BIG_IOCTL32_Command_struct __user
*) arg
;
2482 BIG_IOCTL_Command_struct arg64
;
2483 BIG_IOCTL_Command_struct __user
*p
=
2484 compat_alloc_user_space(sizeof(arg64
));
2488 memset(&arg64
, 0, sizeof(arg64
));
2490 err
|= copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
2491 sizeof(arg64
.LUN_info
));
2492 err
|= copy_from_user(&arg64
.Request
, &arg32
->Request
,
2493 sizeof(arg64
.Request
));
2494 err
|= copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
2495 sizeof(arg64
.error_info
));
2496 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
2497 err
|= get_user(arg64
.malloc_size
, &arg32
->malloc_size
);
2498 err
|= get_user(cp
, &arg32
->buf
);
2499 arg64
.buf
= compat_ptr(cp
);
2500 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
2505 err
= hpsa_ioctl(dev
, CCISS_BIG_PASSTHRU
, (void *)p
);
2508 err
|= copy_in_user(&arg32
->error_info
, &p
->error_info
,
2509 sizeof(arg32
->error_info
));
2515 static int hpsa_compat_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
)
2518 case CCISS_GETPCIINFO
:
2519 case CCISS_GETINTINFO
:
2520 case CCISS_SETINTINFO
:
2521 case CCISS_GETNODENAME
:
2522 case CCISS_SETNODENAME
:
2523 case CCISS_GETHEARTBEAT
:
2524 case CCISS_GETBUSTYPES
:
2525 case CCISS_GETFIRMVER
:
2526 case CCISS_GETDRIVVER
:
2527 case CCISS_REVALIDVOLS
:
2528 case CCISS_DEREGDISK
:
2529 case CCISS_REGNEWDISK
:
2531 case CCISS_RESCANDISK
:
2532 case CCISS_GETLUNINFO
:
2533 return hpsa_ioctl(dev
, cmd
, arg
);
2535 case CCISS_PASSTHRU32
:
2536 return hpsa_ioctl32_passthru(dev
, cmd
, arg
);
2537 case CCISS_BIG_PASSTHRU32
:
2538 return hpsa_ioctl32_big_passthru(dev
, cmd
, arg
);
2541 return -ENOIOCTLCMD
;
2546 static int hpsa_getpciinfo_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2548 struct hpsa_pci_info pciinfo
;
2552 pciinfo
.domain
= pci_domain_nr(h
->pdev
->bus
);
2553 pciinfo
.bus
= h
->pdev
->bus
->number
;
2554 pciinfo
.dev_fn
= h
->pdev
->devfn
;
2555 pciinfo
.board_id
= h
->board_id
;
2556 if (copy_to_user(argp
, &pciinfo
, sizeof(pciinfo
)))
2561 static int hpsa_getdrivver_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2563 DriverVer_type DriverVer
;
2564 unsigned char vmaj
, vmin
, vsubmin
;
2567 rc
= sscanf(HPSA_DRIVER_VERSION
, "%hhu.%hhu.%hhu",
2568 &vmaj
, &vmin
, &vsubmin
);
2570 dev_info(&h
->pdev
->dev
, "driver version string '%s' "
2571 "unrecognized.", HPSA_DRIVER_VERSION
);
2576 DriverVer
= (vmaj
<< 16) | (vmin
<< 8) | vsubmin
;
2579 if (copy_to_user(argp
, &DriverVer
, sizeof(DriverVer_type
)))
2584 static int hpsa_passthru_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2586 IOCTL_Command_struct iocommand
;
2587 struct CommandList
*c
;
2589 union u64bit temp64
;
2593 if (!capable(CAP_SYS_RAWIO
))
2595 if (copy_from_user(&iocommand
, argp
, sizeof(iocommand
)))
2597 if ((iocommand
.buf_size
< 1) &&
2598 (iocommand
.Request
.Type
.Direction
!= XFER_NONE
)) {
2601 if (iocommand
.buf_size
> 0) {
2602 buff
= kmalloc(iocommand
.buf_size
, GFP_KERNEL
);
2605 if (iocommand
.Request
.Type
.Direction
== XFER_WRITE
) {
2606 /* Copy the data into the buffer we created */
2607 if (copy_from_user(buff
, iocommand
.buf
,
2608 iocommand
.buf_size
)) {
2613 memset(buff
, 0, iocommand
.buf_size
);
2616 c
= cmd_special_alloc(h
);
2621 /* Fill in the command type */
2622 c
->cmd_type
= CMD_IOCTL_PEND
;
2623 /* Fill in Command Header */
2624 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
2625 if (iocommand
.buf_size
> 0) { /* buffer to fill */
2626 c
->Header
.SGList
= 1;
2627 c
->Header
.SGTotal
= 1;
2628 } else { /* no buffers to fill */
2629 c
->Header
.SGList
= 0;
2630 c
->Header
.SGTotal
= 0;
2632 memcpy(&c
->Header
.LUN
, &iocommand
.LUN_info
, sizeof(c
->Header
.LUN
));
2633 /* use the kernel address the cmd block for tag */
2634 c
->Header
.Tag
.lower
= c
->busaddr
;
2636 /* Fill in Request block */
2637 memcpy(&c
->Request
, &iocommand
.Request
,
2638 sizeof(c
->Request
));
2640 /* Fill in the scatter gather information */
2641 if (iocommand
.buf_size
> 0) {
2642 temp64
.val
= pci_map_single(h
->pdev
, buff
,
2643 iocommand
.buf_size
, PCI_DMA_BIDIRECTIONAL
);
2644 c
->SG
[0].Addr
.lower
= temp64
.val32
.lower
;
2645 c
->SG
[0].Addr
.upper
= temp64
.val32
.upper
;
2646 c
->SG
[0].Len
= iocommand
.buf_size
;
2647 c
->SG
[0].Ext
= 0; /* we are not chaining*/
2649 hpsa_scsi_do_simple_cmd_core_if_no_lockup(h
, c
);
2650 if (iocommand
.buf_size
> 0)
2651 hpsa_pci_unmap(h
->pdev
, c
, 1, PCI_DMA_BIDIRECTIONAL
);
2652 check_ioctl_unit_attention(h
, c
);
2654 /* Copy the error information out */
2655 memcpy(&iocommand
.error_info
, c
->err_info
,
2656 sizeof(iocommand
.error_info
));
2657 if (copy_to_user(argp
, &iocommand
, sizeof(iocommand
))) {
2659 cmd_special_free(h
, c
);
2662 if (iocommand
.Request
.Type
.Direction
== XFER_READ
&&
2663 iocommand
.buf_size
> 0) {
2664 /* Copy the data out of the buffer we created */
2665 if (copy_to_user(iocommand
.buf
, buff
, iocommand
.buf_size
)) {
2667 cmd_special_free(h
, c
);
2672 cmd_special_free(h
, c
);
2676 static int hpsa_big_passthru_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2678 BIG_IOCTL_Command_struct
*ioc
;
2679 struct CommandList
*c
;
2680 unsigned char **buff
= NULL
;
2681 int *buff_size
= NULL
;
2682 union u64bit temp64
;
2688 BYTE __user
*data_ptr
;
2692 if (!capable(CAP_SYS_RAWIO
))
2694 ioc
= (BIG_IOCTL_Command_struct
*)
2695 kmalloc(sizeof(*ioc
), GFP_KERNEL
);
2700 if (copy_from_user(ioc
, argp
, sizeof(*ioc
))) {
2704 if ((ioc
->buf_size
< 1) &&
2705 (ioc
->Request
.Type
.Direction
!= XFER_NONE
)) {
2709 /* Check kmalloc limits using all SGs */
2710 if (ioc
->malloc_size
> MAX_KMALLOC_SIZE
) {
2714 if (ioc
->buf_size
> ioc
->malloc_size
* SG_ENTRIES_IN_CMD
) {
2718 buff
= kzalloc(SG_ENTRIES_IN_CMD
* sizeof(char *), GFP_KERNEL
);
2723 buff_size
= kmalloc(SG_ENTRIES_IN_CMD
* sizeof(int), GFP_KERNEL
);
2728 left
= ioc
->buf_size
;
2729 data_ptr
= ioc
->buf
;
2731 sz
= (left
> ioc
->malloc_size
) ? ioc
->malloc_size
: left
;
2732 buff_size
[sg_used
] = sz
;
2733 buff
[sg_used
] = kmalloc(sz
, GFP_KERNEL
);
2734 if (buff
[sg_used
] == NULL
) {
2738 if (ioc
->Request
.Type
.Direction
== XFER_WRITE
) {
2739 if (copy_from_user(buff
[sg_used
], data_ptr
, sz
)) {
2744 memset(buff
[sg_used
], 0, sz
);
2749 c
= cmd_special_alloc(h
);
2754 c
->cmd_type
= CMD_IOCTL_PEND
;
2755 c
->Header
.ReplyQueue
= 0;
2756 c
->Header
.SGList
= c
->Header
.SGTotal
= sg_used
;
2757 memcpy(&c
->Header
.LUN
, &ioc
->LUN_info
, sizeof(c
->Header
.LUN
));
2758 c
->Header
.Tag
.lower
= c
->busaddr
;
2759 memcpy(&c
->Request
, &ioc
->Request
, sizeof(c
->Request
));
2760 if (ioc
->buf_size
> 0) {
2762 for (i
= 0; i
< sg_used
; i
++) {
2763 temp64
.val
= pci_map_single(h
->pdev
, buff
[i
],
2764 buff_size
[i
], PCI_DMA_BIDIRECTIONAL
);
2765 c
->SG
[i
].Addr
.lower
= temp64
.val32
.lower
;
2766 c
->SG
[i
].Addr
.upper
= temp64
.val32
.upper
;
2767 c
->SG
[i
].Len
= buff_size
[i
];
2768 /* we are not chaining */
2772 hpsa_scsi_do_simple_cmd_core_if_no_lockup(h
, c
);
2774 hpsa_pci_unmap(h
->pdev
, c
, sg_used
, PCI_DMA_BIDIRECTIONAL
);
2775 check_ioctl_unit_attention(h
, c
);
2776 /* Copy the error information out */
2777 memcpy(&ioc
->error_info
, c
->err_info
, sizeof(ioc
->error_info
));
2778 if (copy_to_user(argp
, ioc
, sizeof(*ioc
))) {
2779 cmd_special_free(h
, c
);
2783 if (ioc
->Request
.Type
.Direction
== XFER_READ
&& ioc
->buf_size
> 0) {
2784 /* Copy the data out of the buffer we created */
2785 BYTE __user
*ptr
= ioc
->buf
;
2786 for (i
= 0; i
< sg_used
; i
++) {
2787 if (copy_to_user(ptr
, buff
[i
], buff_size
[i
])) {
2788 cmd_special_free(h
, c
);
2792 ptr
+= buff_size
[i
];
2795 cmd_special_free(h
, c
);
2799 for (i
= 0; i
< sg_used
; i
++)
2808 static void check_ioctl_unit_attention(struct ctlr_info
*h
,
2809 struct CommandList
*c
)
2811 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
2812 c
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
)
2813 (void) check_for_unit_attention(h
, c
);
2818 static int hpsa_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
)
2820 struct ctlr_info
*h
;
2821 void __user
*argp
= (void __user
*)arg
;
2823 h
= sdev_to_hba(dev
);
2826 case CCISS_DEREGDISK
:
2827 case CCISS_REGNEWDISK
:
2829 hpsa_scan_start(h
->scsi_host
);
2831 case CCISS_GETPCIINFO
:
2832 return hpsa_getpciinfo_ioctl(h
, argp
);
2833 case CCISS_GETDRIVVER
:
2834 return hpsa_getdrivver_ioctl(h
, argp
);
2835 case CCISS_PASSTHRU
:
2836 return hpsa_passthru_ioctl(h
, argp
);
2837 case CCISS_BIG_PASSTHRU
:
2838 return hpsa_big_passthru_ioctl(h
, argp
);
2844 static int __devinit
hpsa_send_host_reset(struct ctlr_info
*h
,
2845 unsigned char *scsi3addr
, u8 reset_type
)
2847 struct CommandList
*c
;
2852 fill_cmd(c
, HPSA_DEVICE_RESET_MSG
, h
, NULL
, 0, 0,
2853 RAID_CTLR_LUNID
, TYPE_MSG
);
2854 c
->Request
.CDB
[1] = reset_type
; /* fill_cmd defaults to target reset */
2856 enqueue_cmd_and_start_io(h
, c
);
2857 /* Don't wait for completion, the reset won't complete. Don't free
2858 * the command either. This is the last command we will send before
2859 * re-initializing everything, so it doesn't matter and won't leak.
2864 static void fill_cmd(struct CommandList
*c
, u8 cmd
, struct ctlr_info
*h
,
2865 void *buff
, size_t size
, u8 page_code
, unsigned char *scsi3addr
,
2868 int pci_dir
= XFER_NONE
;
2870 c
->cmd_type
= CMD_IOCTL_PEND
;
2871 c
->Header
.ReplyQueue
= 0;
2872 if (buff
!= NULL
&& size
> 0) {
2873 c
->Header
.SGList
= 1;
2874 c
->Header
.SGTotal
= 1;
2876 c
->Header
.SGList
= 0;
2877 c
->Header
.SGTotal
= 0;
2879 c
->Header
.Tag
.lower
= c
->busaddr
;
2880 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
2882 c
->Request
.Type
.Type
= cmd_type
;
2883 if (cmd_type
== TYPE_CMD
) {
2886 /* are we trying to read a vital product page */
2887 if (page_code
!= 0) {
2888 c
->Request
.CDB
[1] = 0x01;
2889 c
->Request
.CDB
[2] = page_code
;
2891 c
->Request
.CDBLen
= 6;
2892 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2893 c
->Request
.Type
.Direction
= XFER_READ
;
2894 c
->Request
.Timeout
= 0;
2895 c
->Request
.CDB
[0] = HPSA_INQUIRY
;
2896 c
->Request
.CDB
[4] = size
& 0xFF;
2898 case HPSA_REPORT_LOG
:
2899 case HPSA_REPORT_PHYS
:
2900 /* Talking to controller so It's a physical command
2901 mode = 00 target = 0. Nothing to write.
2903 c
->Request
.CDBLen
= 12;
2904 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2905 c
->Request
.Type
.Direction
= XFER_READ
;
2906 c
->Request
.Timeout
= 0;
2907 c
->Request
.CDB
[0] = cmd
;
2908 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
2909 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
2910 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
2911 c
->Request
.CDB
[9] = size
& 0xFF;
2913 case HPSA_CACHE_FLUSH
:
2914 c
->Request
.CDBLen
= 12;
2915 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2916 c
->Request
.Type
.Direction
= XFER_WRITE
;
2917 c
->Request
.Timeout
= 0;
2918 c
->Request
.CDB
[0] = BMIC_WRITE
;
2919 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
2920 c
->Request
.CDB
[7] = (size
>> 8) & 0xFF;
2921 c
->Request
.CDB
[8] = size
& 0xFF;
2923 case TEST_UNIT_READY
:
2924 c
->Request
.CDBLen
= 6;
2925 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2926 c
->Request
.Type
.Direction
= XFER_NONE
;
2927 c
->Request
.Timeout
= 0;
2930 dev_warn(&h
->pdev
->dev
, "unknown command 0x%c\n", cmd
);
2934 } else if (cmd_type
== TYPE_MSG
) {
2937 case HPSA_DEVICE_RESET_MSG
:
2938 c
->Request
.CDBLen
= 16;
2939 c
->Request
.Type
.Type
= 1; /* It is a MSG not a CMD */
2940 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2941 c
->Request
.Type
.Direction
= XFER_NONE
;
2942 c
->Request
.Timeout
= 0; /* Don't time out */
2943 memset(&c
->Request
.CDB
[0], 0, sizeof(c
->Request
.CDB
));
2944 c
->Request
.CDB
[0] = cmd
;
2945 c
->Request
.CDB
[1] = 0x03; /* Reset target above */
2946 /* If bytes 4-7 are zero, it means reset the */
2948 c
->Request
.CDB
[4] = 0x00;
2949 c
->Request
.CDB
[5] = 0x00;
2950 c
->Request
.CDB
[6] = 0x00;
2951 c
->Request
.CDB
[7] = 0x00;
2955 dev_warn(&h
->pdev
->dev
, "unknown message type %d\n",
2960 dev_warn(&h
->pdev
->dev
, "unknown command type %d\n", cmd_type
);
2964 switch (c
->Request
.Type
.Direction
) {
2966 pci_dir
= PCI_DMA_FROMDEVICE
;
2969 pci_dir
= PCI_DMA_TODEVICE
;
2972 pci_dir
= PCI_DMA_NONE
;
2975 pci_dir
= PCI_DMA_BIDIRECTIONAL
;
2978 hpsa_map_one(h
->pdev
, c
, buff
, size
, pci_dir
);
2984 * Map (physical) PCI mem into (virtual) kernel space
2986 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
2988 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
2989 ulong page_offs
= ((ulong
) base
) - page_base
;
2990 void __iomem
*page_remapped
= ioremap(page_base
, page_offs
+ size
);
2992 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
2995 /* Takes cmds off the submission queue and sends them to the hardware,
2996 * then puts them on the queue of cmds waiting for completion.
2998 static void start_io(struct ctlr_info
*h
)
3000 struct CommandList
*c
;
3002 while (!list_empty(&h
->reqQ
)) {
3003 c
= list_entry(h
->reqQ
.next
, struct CommandList
, list
);
3004 /* can't do anything if fifo is full */
3005 if ((h
->access
.fifo_full(h
))) {
3006 dev_warn(&h
->pdev
->dev
, "fifo full\n");
3010 /* Get the first entry from the Request Q */
3014 /* Tell the controller execute command */
3015 h
->access
.submit_command(h
, c
);
3017 /* Put job onto the completed Q */
3022 static inline unsigned long get_next_completion(struct ctlr_info
*h
)
3024 return h
->access
.command_completed(h
);
3027 static inline bool interrupt_pending(struct ctlr_info
*h
)
3029 return h
->access
.intr_pending(h
);
3032 static inline long interrupt_not_for_us(struct ctlr_info
*h
)
3034 return (h
->access
.intr_pending(h
) == 0) ||
3035 (h
->interrupts_enabled
== 0);
3038 static inline int bad_tag(struct ctlr_info
*h
, u32 tag_index
,
3041 if (unlikely(tag_index
>= h
->nr_cmds
)) {
3042 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
3048 static inline void finish_cmd(struct CommandList
*c
, u32 raw_tag
)
3051 if (likely(c
->cmd_type
== CMD_SCSI
))
3052 complete_scsi_command(c
);
3053 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
3054 complete(c
->waiting
);
3057 static inline u32
hpsa_tag_contains_index(u32 tag
)
3059 return tag
& DIRECT_LOOKUP_BIT
;
3062 static inline u32
hpsa_tag_to_index(u32 tag
)
3064 return tag
>> DIRECT_LOOKUP_SHIFT
;
3068 static inline u32
hpsa_tag_discard_error_bits(struct ctlr_info
*h
, u32 tag
)
3070 #define HPSA_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
3071 #define HPSA_SIMPLE_ERROR_BITS 0x03
3072 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
3073 return tag
& ~HPSA_SIMPLE_ERROR_BITS
;
3074 return tag
& ~HPSA_PERF_ERROR_BITS
;
3077 /* process completion of an indexed ("direct lookup") command */
3078 static inline u32
process_indexed_cmd(struct ctlr_info
*h
,
3082 struct CommandList
*c
;
3084 tag_index
= hpsa_tag_to_index(raw_tag
);
3085 if (bad_tag(h
, tag_index
, raw_tag
))
3086 return next_command(h
);
3087 c
= h
->cmd_pool
+ tag_index
;
3088 finish_cmd(c
, raw_tag
);
3089 return next_command(h
);
3092 /* process completion of a non-indexed command */
3093 static inline u32
process_nonindexed_cmd(struct ctlr_info
*h
,
3097 struct CommandList
*c
= NULL
;
3099 tag
= hpsa_tag_discard_error_bits(h
, raw_tag
);
3100 list_for_each_entry(c
, &h
->cmpQ
, list
) {
3101 if ((c
->busaddr
& 0xFFFFFFE0) == (tag
& 0xFFFFFFE0)) {
3102 finish_cmd(c
, raw_tag
);
3103 return next_command(h
);
3106 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
3107 return next_command(h
);
3110 /* Some controllers, like p400, will give us one interrupt
3111 * after a soft reset, even if we turned interrupts off.
3112 * Only need to check for this in the hpsa_xxx_discard_completions
3115 static int ignore_bogus_interrupt(struct ctlr_info
*h
)
3117 if (likely(!reset_devices
))
3120 if (likely(h
->interrupts_enabled
))
3123 dev_info(&h
->pdev
->dev
, "Received interrupt while interrupts disabled "
3124 "(known firmware bug.) Ignoring.\n");
3129 static irqreturn_t
hpsa_intx_discard_completions(int irq
, void *dev_id
)
3131 struct ctlr_info
*h
= dev_id
;
3132 unsigned long flags
;
3135 if (ignore_bogus_interrupt(h
))
3138 if (interrupt_not_for_us(h
))
3140 spin_lock_irqsave(&h
->lock
, flags
);
3141 h
->last_intr_timestamp
= get_jiffies_64();
3142 while (interrupt_pending(h
)) {
3143 raw_tag
= get_next_completion(h
);
3144 while (raw_tag
!= FIFO_EMPTY
)
3145 raw_tag
= next_command(h
);
3147 spin_unlock_irqrestore(&h
->lock
, flags
);
3151 static irqreturn_t
hpsa_msix_discard_completions(int irq
, void *dev_id
)
3153 struct ctlr_info
*h
= dev_id
;
3154 unsigned long flags
;
3157 if (ignore_bogus_interrupt(h
))
3160 spin_lock_irqsave(&h
->lock
, flags
);
3161 h
->last_intr_timestamp
= get_jiffies_64();
3162 raw_tag
= get_next_completion(h
);
3163 while (raw_tag
!= FIFO_EMPTY
)
3164 raw_tag
= next_command(h
);
3165 spin_unlock_irqrestore(&h
->lock
, flags
);
3169 static irqreturn_t
do_hpsa_intr_intx(int irq
, void *dev_id
)
3171 struct ctlr_info
*h
= dev_id
;
3172 unsigned long flags
;
3175 if (interrupt_not_for_us(h
))
3177 spin_lock_irqsave(&h
->lock
, flags
);
3178 h
->last_intr_timestamp
= get_jiffies_64();
3179 while (interrupt_pending(h
)) {
3180 raw_tag
= get_next_completion(h
);
3181 while (raw_tag
!= FIFO_EMPTY
) {
3182 if (hpsa_tag_contains_index(raw_tag
))
3183 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3185 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3188 spin_unlock_irqrestore(&h
->lock
, flags
);
3192 static irqreturn_t
do_hpsa_intr_msi(int irq
, void *dev_id
)
3194 struct ctlr_info
*h
= dev_id
;
3195 unsigned long flags
;
3198 spin_lock_irqsave(&h
->lock
, flags
);
3199 h
->last_intr_timestamp
= get_jiffies_64();
3200 raw_tag
= get_next_completion(h
);
3201 while (raw_tag
!= FIFO_EMPTY
) {
3202 if (hpsa_tag_contains_index(raw_tag
))
3203 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3205 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3207 spin_unlock_irqrestore(&h
->lock
, flags
);
3211 /* Send a message CDB to the firmware. Careful, this only works
3212 * in simple mode, not performant mode due to the tag lookup.
3213 * We only ever use this immediately after a controller reset.
3215 static __devinit
int hpsa_message(struct pci_dev
*pdev
, unsigned char opcode
,
3219 struct CommandListHeader CommandHeader
;
3220 struct RequestBlock Request
;
3221 struct ErrDescriptor ErrorDescriptor
;
3223 struct Command
*cmd
;
3224 static const size_t cmd_sz
= sizeof(*cmd
) +
3225 sizeof(cmd
->ErrorDescriptor
);
3227 uint32_t paddr32
, tag
;
3228 void __iomem
*vaddr
;
3231 vaddr
= pci_ioremap_bar(pdev
, 0);
3235 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
3236 * CCISS commands, so they must be allocated from the lower 4GiB of
3239 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3245 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
3251 /* This must fit, because of the 32-bit consistent DMA mask. Also,
3252 * although there's no guarantee, we assume that the address is at
3253 * least 4-byte aligned (most likely, it's page-aligned).
3257 cmd
->CommandHeader
.ReplyQueue
= 0;
3258 cmd
->CommandHeader
.SGList
= 0;
3259 cmd
->CommandHeader
.SGTotal
= 0;
3260 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
3261 cmd
->CommandHeader
.Tag
.upper
= 0;
3262 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
3264 cmd
->Request
.CDBLen
= 16;
3265 cmd
->Request
.Type
.Type
= TYPE_MSG
;
3266 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
3267 cmd
->Request
.Type
.Direction
= XFER_NONE
;
3268 cmd
->Request
.Timeout
= 0; /* Don't time out */
3269 cmd
->Request
.CDB
[0] = opcode
;
3270 cmd
->Request
.CDB
[1] = type
;
3271 memset(&cmd
->Request
.CDB
[2], 0, 14); /* rest of the CDB is reserved */
3272 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(*cmd
);
3273 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
3274 cmd
->ErrorDescriptor
.Len
= sizeof(struct ErrorInfo
);
3276 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
3278 for (i
= 0; i
< HPSA_MSG_SEND_RETRY_LIMIT
; i
++) {
3279 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
3280 if ((tag
& ~HPSA_SIMPLE_ERROR_BITS
) == paddr32
)
3282 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS
);
3287 /* we leak the DMA buffer here ... no choice since the controller could
3288 * still complete the command.
3290 if (i
== HPSA_MSG_SEND_RETRY_LIMIT
) {
3291 dev_err(&pdev
->dev
, "controller message %02x:%02x timed out\n",
3296 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
3298 if (tag
& HPSA_ERROR_BIT
) {
3299 dev_err(&pdev
->dev
, "controller message %02x:%02x failed\n",
3304 dev_info(&pdev
->dev
, "controller message %02x:%02x succeeded\n",
3309 #define hpsa_noop(p) hpsa_message(p, 3, 0)
3311 static int hpsa_controller_hard_reset(struct pci_dev
*pdev
,
3312 void * __iomem vaddr
, u32 use_doorbell
)
3318 /* For everything after the P600, the PCI power state method
3319 * of resetting the controller doesn't work, so we have this
3320 * other way using the doorbell register.
3322 dev_info(&pdev
->dev
, "using doorbell to reset controller\n");
3323 writel(use_doorbell
, vaddr
+ SA5_DOORBELL
);
3324 } else { /* Try to do it the PCI power state way */
3326 /* Quoting from the Open CISS Specification: "The Power
3327 * Management Control/Status Register (CSR) controls the power
3328 * state of the device. The normal operating state is D0,
3329 * CSR=00h. The software off state is D3, CSR=03h. To reset
3330 * the controller, place the interface device in D3 then to D0,
3331 * this causes a secondary PCI reset which will reset the
3334 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
3337 "hpsa_reset_controller: "
3338 "PCI PM not supported\n");
3341 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
3342 /* enter the D3hot power management state */
3343 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
3344 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
3346 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
3350 /* enter the D0 power management state */
3351 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
3353 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
3356 * The P600 requires a small delay when changing states.
3357 * Otherwise we may think the board did not reset and we bail.
3358 * This for kdump only and is particular to the P600.
3365 static __devinit
void init_driver_version(char *driver_version
, int len
)
3367 memset(driver_version
, 0, len
);
3368 strncpy(driver_version
, HPSA
" " HPSA_DRIVER_VERSION
, len
- 1);
3371 static __devinit
int write_driver_ver_to_cfgtable(
3372 struct CfgTable __iomem
*cfgtable
)
3374 char *driver_version
;
3375 int i
, size
= sizeof(cfgtable
->driver_version
);
3377 driver_version
= kmalloc(size
, GFP_KERNEL
);
3378 if (!driver_version
)
3381 init_driver_version(driver_version
, size
);
3382 for (i
= 0; i
< size
; i
++)
3383 writeb(driver_version
[i
], &cfgtable
->driver_version
[i
]);
3384 kfree(driver_version
);
3388 static __devinit
void read_driver_ver_from_cfgtable(
3389 struct CfgTable __iomem
*cfgtable
, unsigned char *driver_ver
)
3393 for (i
= 0; i
< sizeof(cfgtable
->driver_version
); i
++)
3394 driver_ver
[i
] = readb(&cfgtable
->driver_version
[i
]);
3397 static __devinit
int controller_reset_failed(
3398 struct CfgTable __iomem
*cfgtable
)
3401 char *driver_ver
, *old_driver_ver
;
3402 int rc
, size
= sizeof(cfgtable
->driver_version
);
3404 old_driver_ver
= kmalloc(2 * size
, GFP_KERNEL
);
3405 if (!old_driver_ver
)
3407 driver_ver
= old_driver_ver
+ size
;
3409 /* After a reset, the 32 bytes of "driver version" in the cfgtable
3410 * should have been changed, otherwise we know the reset failed.
3412 init_driver_version(old_driver_ver
, size
);
3413 read_driver_ver_from_cfgtable(cfgtable
, driver_ver
);
3414 rc
= !memcmp(driver_ver
, old_driver_ver
, size
);
3415 kfree(old_driver_ver
);
3418 /* This does a hard reset of the controller using PCI power management
3419 * states or the using the doorbell register.
3421 static __devinit
int hpsa_kdump_hard_reset_controller(struct pci_dev
*pdev
)
3425 u64 cfg_base_addr_index
;
3426 void __iomem
*vaddr
;
3427 unsigned long paddr
;
3428 u32 misc_fw_support
;
3430 struct CfgTable __iomem
*cfgtable
;
3433 u16 command_register
;
3435 /* For controllers as old as the P600, this is very nearly
3438 * pci_save_state(pci_dev);
3439 * pci_set_power_state(pci_dev, PCI_D3hot);
3440 * pci_set_power_state(pci_dev, PCI_D0);
3441 * pci_restore_state(pci_dev);
3443 * For controllers newer than the P600, the pci power state
3444 * method of resetting doesn't work so we have another way
3445 * using the doorbell register.
3448 rc
= hpsa_lookup_board_id(pdev
, &board_id
);
3449 if (rc
< 0 || !ctlr_is_resettable(board_id
)) {
3450 dev_warn(&pdev
->dev
, "Not resetting device.\n");
3454 /* if controller is soft- but not hard resettable... */
3455 if (!ctlr_is_hard_resettable(board_id
))
3456 return -ENOTSUPP
; /* try soft reset later. */
3458 /* Save the PCI command register */
3459 pci_read_config_word(pdev
, 4, &command_register
);
3460 /* Turn the board off. This is so that later pci_restore_state()
3461 * won't turn the board on before the rest of config space is ready.
3463 pci_disable_device(pdev
);
3464 pci_save_state(pdev
);
3466 /* find the first memory BAR, so we can find the cfg table */
3467 rc
= hpsa_pci_find_memory_BAR(pdev
, &paddr
);
3470 vaddr
= remap_pci_mem(paddr
, 0x250);
3474 /* find cfgtable in order to check if reset via doorbell is supported */
3475 rc
= hpsa_find_cfg_addrs(pdev
, vaddr
, &cfg_base_addr
,
3476 &cfg_base_addr_index
, &cfg_offset
);
3479 cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
3480 cfg_base_addr_index
) + cfg_offset
, sizeof(*cfgtable
));
3485 rc
= write_driver_ver_to_cfgtable(cfgtable
);
3489 /* If reset via doorbell register is supported, use that.
3490 * There are two such methods. Favor the newest method.
3492 misc_fw_support
= readl(&cfgtable
->misc_fw_support
);
3493 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET2
;
3495 use_doorbell
= DOORBELL_CTLR_RESET2
;
3497 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET
;
3499 dev_warn(&pdev
->dev
, "Soft reset not supported. "
3500 "Firmware update is required.\n");
3501 rc
= -ENOTSUPP
; /* try soft reset */
3502 goto unmap_cfgtable
;
3506 rc
= hpsa_controller_hard_reset(pdev
, vaddr
, use_doorbell
);
3508 goto unmap_cfgtable
;
3510 pci_restore_state(pdev
);
3511 rc
= pci_enable_device(pdev
);
3513 dev_warn(&pdev
->dev
, "failed to enable device.\n");
3514 goto unmap_cfgtable
;
3516 pci_write_config_word(pdev
, 4, command_register
);
3518 /* Some devices (notably the HP Smart Array 5i Controller)
3519 need a little pause here */
3520 msleep(HPSA_POST_RESET_PAUSE_MSECS
);
3522 /* Wait for board to become not ready, then ready. */
3523 dev_info(&pdev
->dev
, "Waiting for board to reset.\n");
3524 rc
= hpsa_wait_for_board_state(pdev
, vaddr
, BOARD_NOT_READY
);
3526 dev_warn(&pdev
->dev
,
3527 "failed waiting for board to reset."
3528 " Will try soft reset.\n");
3529 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
3530 goto unmap_cfgtable
;
3532 rc
= hpsa_wait_for_board_state(pdev
, vaddr
, BOARD_READY
);
3534 dev_warn(&pdev
->dev
,
3535 "failed waiting for board to become ready "
3536 "after hard reset\n");
3537 goto unmap_cfgtable
;
3540 rc
= controller_reset_failed(vaddr
);
3542 goto unmap_cfgtable
;
3544 dev_warn(&pdev
->dev
, "Unable to successfully reset "
3545 "controller. Will try soft reset.\n");
3548 dev_info(&pdev
->dev
, "board ready after hard reset.\n");
3560 * We cannot read the structure directly, for portability we must use
3562 * This is for debug only.
3564 static void print_cfg_table(struct device
*dev
, struct CfgTable
*tb
)
3570 dev_info(dev
, "Controller Configuration information\n");
3571 dev_info(dev
, "------------------------------------\n");
3572 for (i
= 0; i
< 4; i
++)
3573 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3574 temp_name
[4] = '\0';
3575 dev_info(dev
, " Signature = %s\n", temp_name
);
3576 dev_info(dev
, " Spec Number = %d\n", readl(&(tb
->SpecValence
)));
3577 dev_info(dev
, " Transport methods supported = 0x%x\n",
3578 readl(&(tb
->TransportSupport
)));
3579 dev_info(dev
, " Transport methods active = 0x%x\n",
3580 readl(&(tb
->TransportActive
)));
3581 dev_info(dev
, " Requested transport Method = 0x%x\n",
3582 readl(&(tb
->HostWrite
.TransportRequest
)));
3583 dev_info(dev
, " Coalesce Interrupt Delay = 0x%x\n",
3584 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3585 dev_info(dev
, " Coalesce Interrupt Count = 0x%x\n",
3586 readl(&(tb
->HostWrite
.CoalIntCount
)));
3587 dev_info(dev
, " Max outstanding commands = 0x%d\n",
3588 readl(&(tb
->CmdsOutMax
)));
3589 dev_info(dev
, " Bus Types = 0x%x\n", readl(&(tb
->BusTypes
)));
3590 for (i
= 0; i
< 16; i
++)
3591 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3592 temp_name
[16] = '\0';
3593 dev_info(dev
, " Server Name = %s\n", temp_name
);
3594 dev_info(dev
, " Heartbeat Counter = 0x%x\n\n\n",
3595 readl(&(tb
->HeartBeat
)));
3596 #endif /* HPSA_DEBUG */
3599 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3601 int i
, offset
, mem_type
, bar_type
;
3603 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
3606 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3607 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
3608 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
3611 mem_type
= pci_resource_flags(pdev
, i
) &
3612 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
3614 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
3615 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
3616 offset
+= 4; /* 32 bit */
3618 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
3621 default: /* reserved in PCI 2.2 */
3622 dev_warn(&pdev
->dev
,
3623 "base address is invalid\n");
3628 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
3634 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
3635 * controllers that are capable. If not, we use IO-APIC mode.
3638 static void __devinit
hpsa_interrupt_mode(struct ctlr_info
*h
)
3640 #ifdef CONFIG_PCI_MSI
3642 struct msix_entry hpsa_msix_entries
[4] = { {0, 0}, {0, 1},
3646 /* Some boards advertise MSI but don't really support it */
3647 if ((h
->board_id
== 0x40700E11) || (h
->board_id
== 0x40800E11) ||
3648 (h
->board_id
== 0x40820E11) || (h
->board_id
== 0x40830E11))
3649 goto default_int_mode
;
3650 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSIX
)) {
3651 dev_info(&h
->pdev
->dev
, "MSIX\n");
3652 err
= pci_enable_msix(h
->pdev
, hpsa_msix_entries
, 4);
3654 h
->intr
[0] = hpsa_msix_entries
[0].vector
;
3655 h
->intr
[1] = hpsa_msix_entries
[1].vector
;
3656 h
->intr
[2] = hpsa_msix_entries
[2].vector
;
3657 h
->intr
[3] = hpsa_msix_entries
[3].vector
;
3662 dev_warn(&h
->pdev
->dev
, "only %d MSI-X vectors "
3663 "available\n", err
);
3664 goto default_int_mode
;
3666 dev_warn(&h
->pdev
->dev
, "MSI-X init failed %d\n",
3668 goto default_int_mode
;
3671 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSI
)) {
3672 dev_info(&h
->pdev
->dev
, "MSI\n");
3673 if (!pci_enable_msi(h
->pdev
))
3676 dev_warn(&h
->pdev
->dev
, "MSI init failed\n");
3679 #endif /* CONFIG_PCI_MSI */
3680 /* if we get here we're going to use the default interrupt mode */
3681 h
->intr
[h
->intr_mode
] = h
->pdev
->irq
;
3684 static int __devinit
hpsa_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
)
3687 u32 subsystem_vendor_id
, subsystem_device_id
;
3689 subsystem_vendor_id
= pdev
->subsystem_vendor
;
3690 subsystem_device_id
= pdev
->subsystem_device
;
3691 *board_id
= ((subsystem_device_id
<< 16) & 0xffff0000) |
3692 subsystem_vendor_id
;
3694 for (i
= 0; i
< ARRAY_SIZE(products
); i
++)
3695 if (*board_id
== products
[i
].board_id
)
3698 if ((subsystem_vendor_id
!= PCI_VENDOR_ID_HP
&&
3699 subsystem_vendor_id
!= PCI_VENDOR_ID_COMPAQ
) ||
3701 dev_warn(&pdev
->dev
, "unrecognized board ID: "
3702 "0x%08x, ignoring.\n", *board_id
);
3705 return ARRAY_SIZE(products
) - 1; /* generic unknown smart array */
3708 static inline bool hpsa_board_disabled(struct pci_dev
*pdev
)
3712 (void) pci_read_config_word(pdev
, PCI_COMMAND
, &command
);
3713 return ((command
& PCI_COMMAND_MEMORY
) == 0);
3716 static int __devinit
hpsa_pci_find_memory_BAR(struct pci_dev
*pdev
,
3717 unsigned long *memory_bar
)
3721 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++)
3722 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
) {
3723 /* addressing mode bits already removed */
3724 *memory_bar
= pci_resource_start(pdev
, i
);
3725 dev_dbg(&pdev
->dev
, "memory BAR = %lx\n",
3729 dev_warn(&pdev
->dev
, "no memory BAR found\n");
3733 static int __devinit
hpsa_wait_for_board_state(struct pci_dev
*pdev
,
3734 void __iomem
*vaddr
, int wait_for_ready
)
3739 iterations
= HPSA_BOARD_READY_ITERATIONS
;
3741 iterations
= HPSA_BOARD_NOT_READY_ITERATIONS
;
3743 for (i
= 0; i
< iterations
; i
++) {
3744 scratchpad
= readl(vaddr
+ SA5_SCRATCHPAD_OFFSET
);
3745 if (wait_for_ready
) {
3746 if (scratchpad
== HPSA_FIRMWARE_READY
)
3749 if (scratchpad
!= HPSA_FIRMWARE_READY
)
3752 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS
);
3754 dev_warn(&pdev
->dev
, "board not ready, timed out.\n");
3758 static int __devinit
hpsa_find_cfg_addrs(struct pci_dev
*pdev
,
3759 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
3762 *cfg_base_addr
= readl(vaddr
+ SA5_CTCFG_OFFSET
);
3763 *cfg_offset
= readl(vaddr
+ SA5_CTMEM_OFFSET
);
3764 *cfg_base_addr
&= (u32
) 0x0000ffff;
3765 *cfg_base_addr_index
= find_PCI_BAR_index(pdev
, *cfg_base_addr
);
3766 if (*cfg_base_addr_index
== -1) {
3767 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index\n");
3773 static int __devinit
hpsa_find_cfgtables(struct ctlr_info
*h
)
3777 u64 cfg_base_addr_index
;
3781 rc
= hpsa_find_cfg_addrs(h
->pdev
, h
->vaddr
, &cfg_base_addr
,
3782 &cfg_base_addr_index
, &cfg_offset
);
3785 h
->cfgtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
3786 cfg_base_addr_index
) + cfg_offset
, sizeof(*h
->cfgtable
));
3789 rc
= write_driver_ver_to_cfgtable(h
->cfgtable
);
3792 /* Find performant mode table. */
3793 trans_offset
= readl(&h
->cfgtable
->TransMethodOffset
);
3794 h
->transtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
3795 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
3796 sizeof(*h
->transtable
));
3802 static void __devinit
hpsa_get_max_perf_mode_cmds(struct ctlr_info
*h
)
3804 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
3806 /* Limit commands in memory limited kdump scenario. */
3807 if (reset_devices
&& h
->max_commands
> 32)
3808 h
->max_commands
= 32;
3810 if (h
->max_commands
< 16) {
3811 dev_warn(&h
->pdev
->dev
, "Controller reports "
3812 "max supported commands of %d, an obvious lie. "
3813 "Using 16. Ensure that firmware is up to date.\n",
3815 h
->max_commands
= 16;
3819 /* Interrogate the hardware for some limits:
3820 * max commands, max SG elements without chaining, and with chaining,
3821 * SG chain block size, etc.
3823 static void __devinit
hpsa_find_board_params(struct ctlr_info
*h
)
3825 hpsa_get_max_perf_mode_cmds(h
);
3826 h
->nr_cmds
= h
->max_commands
- 4; /* Allow room for some ioctls */
3827 h
->maxsgentries
= readl(&(h
->cfgtable
->MaxScatterGatherElements
));
3829 * Limit in-command s/g elements to 32 save dma'able memory.
3830 * Howvever spec says if 0, use 31
3832 h
->max_cmd_sg_entries
= 31;
3833 if (h
->maxsgentries
> 512) {
3834 h
->max_cmd_sg_entries
= 32;
3835 h
->chainsize
= h
->maxsgentries
- h
->max_cmd_sg_entries
+ 1;
3836 h
->maxsgentries
--; /* save one for chain pointer */
3838 h
->maxsgentries
= 31; /* default to traditional values */
3843 static inline bool hpsa_CISS_signature_present(struct ctlr_info
*h
)
3845 if ((readb(&h
->cfgtable
->Signature
[0]) != 'C') ||
3846 (readb(&h
->cfgtable
->Signature
[1]) != 'I') ||
3847 (readb(&h
->cfgtable
->Signature
[2]) != 'S') ||
3848 (readb(&h
->cfgtable
->Signature
[3]) != 'S')) {
3849 dev_warn(&h
->pdev
->dev
, "not a valid CISS config table\n");
3855 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
3856 static inline void hpsa_enable_scsi_prefetch(struct ctlr_info
*h
)
3861 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
3863 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
3867 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
3868 * in a prefetch beyond physical memory.
3870 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info
*h
)
3874 if (h
->board_id
!= 0x3225103C)
3876 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
3877 dma_prefetch
|= 0x8000;
3878 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
3881 static void __devinit
hpsa_wait_for_mode_change_ack(struct ctlr_info
*h
)
3885 unsigned long flags
;
3887 /* under certain very rare conditions, this can take awhile.
3888 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3889 * as we enter this code.)
3891 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
3892 spin_lock_irqsave(&h
->lock
, flags
);
3893 doorbell_value
= readl(h
->vaddr
+ SA5_DOORBELL
);
3894 spin_unlock_irqrestore(&h
->lock
, flags
);
3895 if (!(doorbell_value
& CFGTBL_ChangeReq
))
3897 /* delay and try again */
3898 usleep_range(10000, 20000);
3902 static int __devinit
hpsa_enter_simple_mode(struct ctlr_info
*h
)
3906 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
3907 if (!(trans_support
& SIMPLE_MODE
))
3910 h
->max_commands
= readl(&(h
->cfgtable
->CmdsOutMax
));
3911 /* Update the field, and then ring the doorbell */
3912 writel(CFGTBL_Trans_Simple
, &(h
->cfgtable
->HostWrite
.TransportRequest
));
3913 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
3914 hpsa_wait_for_mode_change_ack(h
);
3915 print_cfg_table(&h
->pdev
->dev
, h
->cfgtable
);
3916 if (!(readl(&(h
->cfgtable
->TransportActive
)) & CFGTBL_Trans_Simple
)) {
3917 dev_warn(&h
->pdev
->dev
,
3918 "unable to get board into simple mode\n");
3921 h
->transMethod
= CFGTBL_Trans_Simple
;
3925 static int __devinit
hpsa_pci_init(struct ctlr_info
*h
)
3927 int prod_index
, err
;
3929 prod_index
= hpsa_lookup_board_id(h
->pdev
, &h
->board_id
);
3932 h
->product_name
= products
[prod_index
].product_name
;
3933 h
->access
= *(products
[prod_index
].access
);
3935 if (hpsa_board_disabled(h
->pdev
)) {
3936 dev_warn(&h
->pdev
->dev
, "controller appears to be disabled\n");
3940 pci_disable_link_state(h
->pdev
, PCIE_LINK_STATE_L0S
|
3941 PCIE_LINK_STATE_L1
| PCIE_LINK_STATE_CLKPM
);
3943 err
= pci_enable_device(h
->pdev
);
3945 dev_warn(&h
->pdev
->dev
, "unable to enable PCI device\n");
3949 err
= pci_request_regions(h
->pdev
, HPSA
);
3951 dev_err(&h
->pdev
->dev
,
3952 "cannot obtain PCI resources, aborting\n");
3955 hpsa_interrupt_mode(h
);
3956 err
= hpsa_pci_find_memory_BAR(h
->pdev
, &h
->paddr
);
3958 goto err_out_free_res
;
3959 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
3962 goto err_out_free_res
;
3964 err
= hpsa_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
);
3966 goto err_out_free_res
;
3967 err
= hpsa_find_cfgtables(h
);
3969 goto err_out_free_res
;
3970 hpsa_find_board_params(h
);
3972 if (!hpsa_CISS_signature_present(h
)) {
3974 goto err_out_free_res
;
3976 hpsa_enable_scsi_prefetch(h
);
3977 hpsa_p600_dma_prefetch_quirk(h
);
3978 err
= hpsa_enter_simple_mode(h
);
3980 goto err_out_free_res
;
3985 iounmap(h
->transtable
);
3987 iounmap(h
->cfgtable
);
3991 * Deliberately omit pci_disable_device(): it does something nasty to
3992 * Smart Array controllers that pci_enable_device does not undo
3994 pci_release_regions(h
->pdev
);
3998 static void __devinit
hpsa_hba_inquiry(struct ctlr_info
*h
)
4002 #define HBA_INQUIRY_BYTE_COUNT 64
4003 h
->hba_inquiry_data
= kmalloc(HBA_INQUIRY_BYTE_COUNT
, GFP_KERNEL
);
4004 if (!h
->hba_inquiry_data
)
4006 rc
= hpsa_scsi_do_inquiry(h
, RAID_CTLR_LUNID
, 0,
4007 h
->hba_inquiry_data
, HBA_INQUIRY_BYTE_COUNT
);
4009 kfree(h
->hba_inquiry_data
);
4010 h
->hba_inquiry_data
= NULL
;
4014 static __devinit
int hpsa_init_reset_devices(struct pci_dev
*pdev
)
4021 /* Reset the controller with a PCI power-cycle or via doorbell */
4022 rc
= hpsa_kdump_hard_reset_controller(pdev
);
4024 /* -ENOTSUPP here means we cannot reset the controller
4025 * but it's already (and still) up and running in
4026 * "performant mode". Or, it might be 640x, which can't reset
4027 * due to concerns about shared bbwc between 6402/6404 pair.
4029 if (rc
== -ENOTSUPP
)
4030 return rc
; /* just try to do the kdump anyhow. */
4034 /* Now try to get the controller to respond to a no-op */
4035 dev_warn(&pdev
->dev
, "Waiting for controller to respond to no-op\n");
4036 for (i
= 0; i
< HPSA_POST_RESET_NOOP_RETRIES
; i
++) {
4037 if (hpsa_noop(pdev
) == 0)
4040 dev_warn(&pdev
->dev
, "no-op failed%s\n",
4041 (i
< 11 ? "; re-trying" : ""));
4046 static __devinit
int hpsa_allocate_cmd_pool(struct ctlr_info
*h
)
4048 h
->cmd_pool_bits
= kzalloc(
4049 DIV_ROUND_UP(h
->nr_cmds
, BITS_PER_LONG
) *
4050 sizeof(unsigned long), GFP_KERNEL
);
4051 h
->cmd_pool
= pci_alloc_consistent(h
->pdev
,
4052 h
->nr_cmds
* sizeof(*h
->cmd_pool
),
4053 &(h
->cmd_pool_dhandle
));
4054 h
->errinfo_pool
= pci_alloc_consistent(h
->pdev
,
4055 h
->nr_cmds
* sizeof(*h
->errinfo_pool
),
4056 &(h
->errinfo_pool_dhandle
));
4057 if ((h
->cmd_pool_bits
== NULL
)
4058 || (h
->cmd_pool
== NULL
)
4059 || (h
->errinfo_pool
== NULL
)) {
4060 dev_err(&h
->pdev
->dev
, "out of memory in %s", __func__
);
4066 static void hpsa_free_cmd_pool(struct ctlr_info
*h
)
4068 kfree(h
->cmd_pool_bits
);
4070 pci_free_consistent(h
->pdev
,
4071 h
->nr_cmds
* sizeof(struct CommandList
),
4072 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4073 if (h
->errinfo_pool
)
4074 pci_free_consistent(h
->pdev
,
4075 h
->nr_cmds
* sizeof(struct ErrorInfo
),
4077 h
->errinfo_pool_dhandle
);
4080 static int hpsa_request_irq(struct ctlr_info
*h
,
4081 irqreturn_t (*msixhandler
)(int, void *),
4082 irqreturn_t (*intxhandler
)(int, void *))
4086 if (h
->msix_vector
|| h
->msi_vector
)
4087 rc
= request_irq(h
->intr
[h
->intr_mode
], msixhandler
,
4090 rc
= request_irq(h
->intr
[h
->intr_mode
], intxhandler
,
4091 IRQF_SHARED
, h
->devname
, h
);
4093 dev_err(&h
->pdev
->dev
, "unable to get irq %d for %s\n",
4094 h
->intr
[h
->intr_mode
], h
->devname
);
4100 static int __devinit
hpsa_kdump_soft_reset(struct ctlr_info
*h
)
4102 if (hpsa_send_host_reset(h
, RAID_CTLR_LUNID
,
4103 HPSA_RESET_TYPE_CONTROLLER
)) {
4104 dev_warn(&h
->pdev
->dev
, "Resetting array controller failed.\n");
4108 dev_info(&h
->pdev
->dev
, "Waiting for board to soft reset.\n");
4109 if (hpsa_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_NOT_READY
)) {
4110 dev_warn(&h
->pdev
->dev
, "Soft reset had no effect.\n");
4114 dev_info(&h
->pdev
->dev
, "Board reset, awaiting READY status.\n");
4115 if (hpsa_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
)) {
4116 dev_warn(&h
->pdev
->dev
, "Board failed to become ready "
4117 "after soft reset.\n");
4124 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info
*h
)
4126 free_irq(h
->intr
[h
->intr_mode
], h
);
4127 #ifdef CONFIG_PCI_MSI
4129 pci_disable_msix(h
->pdev
);
4130 else if (h
->msi_vector
)
4131 pci_disable_msi(h
->pdev
);
4132 #endif /* CONFIG_PCI_MSI */
4133 hpsa_free_sg_chain_blocks(h
);
4134 hpsa_free_cmd_pool(h
);
4135 kfree(h
->blockFetchTable
);
4136 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
4137 h
->reply_pool
, h
->reply_pool_dhandle
);
4141 iounmap(h
->transtable
);
4143 iounmap(h
->cfgtable
);
4144 pci_release_regions(h
->pdev
);
4148 static void remove_ctlr_from_lockup_detector_list(struct ctlr_info
*h
)
4150 assert_spin_locked(&lockup_detector_lock
);
4151 if (!hpsa_lockup_detector
)
4153 if (h
->lockup_detected
)
4154 return; /* already stopped the lockup detector */
4155 list_del(&h
->lockup_list
);
4158 /* Called when controller lockup detected. */
4159 static void fail_all_cmds_on_list(struct ctlr_info
*h
, struct list_head
*list
)
4161 struct CommandList
*c
= NULL
;
4163 assert_spin_locked(&h
->lock
);
4164 /* Mark all outstanding commands as failed and complete them. */
4165 while (!list_empty(list
)) {
4166 c
= list_entry(list
->next
, struct CommandList
, list
);
4167 c
->err_info
->CommandStatus
= CMD_HARDWARE_ERR
;
4168 finish_cmd(c
, c
->Header
.Tag
.lower
);
4172 static void controller_lockup_detected(struct ctlr_info
*h
)
4174 unsigned long flags
;
4176 assert_spin_locked(&lockup_detector_lock
);
4177 remove_ctlr_from_lockup_detector_list(h
);
4178 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4179 spin_lock_irqsave(&h
->lock
, flags
);
4180 h
->lockup_detected
= readl(h
->vaddr
+ SA5_SCRATCHPAD_OFFSET
);
4181 spin_unlock_irqrestore(&h
->lock
, flags
);
4182 dev_warn(&h
->pdev
->dev
, "Controller lockup detected: 0x%08x\n",
4183 h
->lockup_detected
);
4184 pci_disable_device(h
->pdev
);
4185 spin_lock_irqsave(&h
->lock
, flags
);
4186 fail_all_cmds_on_list(h
, &h
->cmpQ
);
4187 fail_all_cmds_on_list(h
, &h
->reqQ
);
4188 spin_unlock_irqrestore(&h
->lock
, flags
);
4191 #define HEARTBEAT_SAMPLE_INTERVAL (10 * HZ)
4192 #define HEARTBEAT_CHECK_MINIMUM_INTERVAL (HEARTBEAT_SAMPLE_INTERVAL / 2)
4194 static void detect_controller_lockup(struct ctlr_info
*h
)
4198 unsigned long flags
;
4200 assert_spin_locked(&lockup_detector_lock
);
4201 now
= get_jiffies_64();
4202 /* If we've received an interrupt recently, we're ok. */
4203 if (time_after64(h
->last_intr_timestamp
+
4204 (HEARTBEAT_CHECK_MINIMUM_INTERVAL
), now
))
4208 * If we've already checked the heartbeat recently, we're ok.
4209 * This could happen if someone sends us a signal. We
4210 * otherwise don't care about signals in this thread.
4212 if (time_after64(h
->last_heartbeat_timestamp
+
4213 (HEARTBEAT_CHECK_MINIMUM_INTERVAL
), now
))
4216 /* If heartbeat has not changed since we last looked, we're not ok. */
4217 spin_lock_irqsave(&h
->lock
, flags
);
4218 heartbeat
= readl(&h
->cfgtable
->HeartBeat
);
4219 spin_unlock_irqrestore(&h
->lock
, flags
);
4220 if (h
->last_heartbeat
== heartbeat
) {
4221 controller_lockup_detected(h
);
4226 h
->last_heartbeat
= heartbeat
;
4227 h
->last_heartbeat_timestamp
= now
;
4230 static int detect_controller_lockup_thread(void *notused
)
4232 struct ctlr_info
*h
;
4233 unsigned long flags
;
4236 struct list_head
*this, *tmp
;
4238 schedule_timeout_interruptible(HEARTBEAT_SAMPLE_INTERVAL
);
4239 if (kthread_should_stop())
4241 spin_lock_irqsave(&lockup_detector_lock
, flags
);
4242 list_for_each_safe(this, tmp
, &hpsa_ctlr_list
) {
4243 h
= list_entry(this, struct ctlr_info
, lockup_list
);
4244 detect_controller_lockup(h
);
4246 spin_unlock_irqrestore(&lockup_detector_lock
, flags
);
4251 static void add_ctlr_to_lockup_detector_list(struct ctlr_info
*h
)
4253 unsigned long flags
;
4255 spin_lock_irqsave(&lockup_detector_lock
, flags
);
4256 list_add_tail(&h
->lockup_list
, &hpsa_ctlr_list
);
4257 spin_unlock_irqrestore(&lockup_detector_lock
, flags
);
4260 static void start_controller_lockup_detector(struct ctlr_info
*h
)
4262 /* Start the lockup detector thread if not already started */
4263 if (!hpsa_lockup_detector
) {
4264 spin_lock_init(&lockup_detector_lock
);
4265 hpsa_lockup_detector
=
4266 kthread_run(detect_controller_lockup_thread
,
4269 if (!hpsa_lockup_detector
) {
4270 dev_warn(&h
->pdev
->dev
,
4271 "Could not start lockup detector thread\n");
4274 add_ctlr_to_lockup_detector_list(h
);
4277 static void stop_controller_lockup_detector(struct ctlr_info
*h
)
4279 unsigned long flags
;
4281 spin_lock_irqsave(&lockup_detector_lock
, flags
);
4282 remove_ctlr_from_lockup_detector_list(h
);
4283 /* If the list of ctlr's to monitor is empty, stop the thread */
4284 if (list_empty(&hpsa_ctlr_list
)) {
4285 spin_unlock_irqrestore(&lockup_detector_lock
, flags
);
4286 kthread_stop(hpsa_lockup_detector
);
4287 spin_lock_irqsave(&lockup_detector_lock
, flags
);
4288 hpsa_lockup_detector
= NULL
;
4290 spin_unlock_irqrestore(&lockup_detector_lock
, flags
);
4293 static int __devinit
hpsa_init_one(struct pci_dev
*pdev
,
4294 const struct pci_device_id
*ent
)
4297 struct ctlr_info
*h
;
4298 int try_soft_reset
= 0;
4299 unsigned long flags
;
4301 if (number_of_controllers
== 0)
4302 printk(KERN_INFO DRIVER_NAME
"\n");
4304 rc
= hpsa_init_reset_devices(pdev
);
4306 if (rc
!= -ENOTSUPP
)
4308 /* If the reset fails in a particular way (it has no way to do
4309 * a proper hard reset, so returns -ENOTSUPP) we can try to do
4310 * a soft reset once we get the controller configured up to the
4311 * point that it can accept a command.
4317 reinit_after_soft_reset
:
4319 /* Command structures must be aligned on a 32-byte boundary because
4320 * the 5 lower bits of the address are used by the hardware. and by
4321 * the driver. See comments in hpsa.h for more info.
4323 #define COMMANDLIST_ALIGNMENT 32
4324 BUILD_BUG_ON(sizeof(struct CommandList
) % COMMANDLIST_ALIGNMENT
);
4325 h
= kzalloc(sizeof(*h
), GFP_KERNEL
);
4330 h
->intr_mode
= hpsa_simple_mode
? SIMPLE_MODE_INT
: PERF_MODE_INT
;
4331 INIT_LIST_HEAD(&h
->cmpQ
);
4332 INIT_LIST_HEAD(&h
->reqQ
);
4333 spin_lock_init(&h
->lock
);
4334 spin_lock_init(&h
->scan_lock
);
4335 rc
= hpsa_pci_init(h
);
4339 sprintf(h
->devname
, HPSA
"%d", number_of_controllers
);
4340 h
->ctlr
= number_of_controllers
;
4341 number_of_controllers
++;
4343 /* configure PCI DMA stuff */
4344 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(64));
4348 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
4352 dev_err(&pdev
->dev
, "no suitable DMA available\n");
4357 /* make sure the board interrupts are off */
4358 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4360 if (hpsa_request_irq(h
, do_hpsa_intr_msi
, do_hpsa_intr_intx
))
4362 dev_info(&pdev
->dev
, "%s: <0x%x> at IRQ %d%s using DAC\n",
4363 h
->devname
, pdev
->device
,
4364 h
->intr
[h
->intr_mode
], dac
? "" : " not");
4365 if (hpsa_allocate_cmd_pool(h
))
4367 if (hpsa_allocate_sg_chain_blocks(h
))
4369 init_waitqueue_head(&h
->scan_wait_queue
);
4370 h
->scan_finished
= 1; /* no scan currently in progress */
4372 pci_set_drvdata(pdev
, h
);
4374 h
->scsi_host
= NULL
;
4375 spin_lock_init(&h
->devlock
);
4376 hpsa_put_ctlr_into_performant_mode(h
);
4378 /* At this point, the controller is ready to take commands.
4379 * Now, if reset_devices and the hard reset didn't work, try
4380 * the soft reset and see if that works.
4382 if (try_soft_reset
) {
4384 /* This is kind of gross. We may or may not get a completion
4385 * from the soft reset command, and if we do, then the value
4386 * from the fifo may or may not be valid. So, we wait 10 secs
4387 * after the reset throwing away any completions we get during
4388 * that time. Unregister the interrupt handler and register
4389 * fake ones to scoop up any residual completions.
4391 spin_lock_irqsave(&h
->lock
, flags
);
4392 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4393 spin_unlock_irqrestore(&h
->lock
, flags
);
4394 free_irq(h
->intr
[h
->intr_mode
], h
);
4395 rc
= hpsa_request_irq(h
, hpsa_msix_discard_completions
,
4396 hpsa_intx_discard_completions
);
4398 dev_warn(&h
->pdev
->dev
, "Failed to request_irq after "
4403 rc
= hpsa_kdump_soft_reset(h
);
4405 /* Neither hard nor soft reset worked, we're hosed. */
4408 dev_info(&h
->pdev
->dev
, "Board READY.\n");
4409 dev_info(&h
->pdev
->dev
,
4410 "Waiting for stale completions to drain.\n");
4411 h
->access
.set_intr_mask(h
, HPSA_INTR_ON
);
4413 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4415 rc
= controller_reset_failed(h
->cfgtable
);
4417 dev_info(&h
->pdev
->dev
,
4418 "Soft reset appears to have failed.\n");
4420 /* since the controller's reset, we have to go back and re-init
4421 * everything. Easiest to just forget what we've done and do it
4424 hpsa_undo_allocations_after_kdump_soft_reset(h
);
4427 /* don't go to clean4, we already unallocated */
4430 goto reinit_after_soft_reset
;
4433 /* Turn the interrupts on so we can service requests */
4434 h
->access
.set_intr_mask(h
, HPSA_INTR_ON
);
4436 hpsa_hba_inquiry(h
);
4437 hpsa_register_scsi(h
); /* hook ourselves into SCSI subsystem */
4438 start_controller_lockup_detector(h
);
4442 hpsa_free_sg_chain_blocks(h
);
4443 hpsa_free_cmd_pool(h
);
4444 free_irq(h
->intr
[h
->intr_mode
], h
);
4451 static void hpsa_flush_cache(struct ctlr_info
*h
)
4454 struct CommandList
*c
;
4456 flush_buf
= kzalloc(4, GFP_KERNEL
);
4460 c
= cmd_special_alloc(h
);
4462 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
4465 fill_cmd(c
, HPSA_CACHE_FLUSH
, h
, flush_buf
, 4, 0,
4466 RAID_CTLR_LUNID
, TYPE_CMD
);
4467 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_TODEVICE
);
4468 if (c
->err_info
->CommandStatus
!= 0)
4469 dev_warn(&h
->pdev
->dev
,
4470 "error flushing cache on controller\n");
4471 cmd_special_free(h
, c
);
4476 static void hpsa_shutdown(struct pci_dev
*pdev
)
4478 struct ctlr_info
*h
;
4480 h
= pci_get_drvdata(pdev
);
4481 /* Turn board interrupts off and send the flush cache command
4482 * sendcmd will turn off interrupt, and send the flush...
4483 * To write all data in the battery backed cache to disks
4485 hpsa_flush_cache(h
);
4486 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4487 free_irq(h
->intr
[h
->intr_mode
], h
);
4488 #ifdef CONFIG_PCI_MSI
4490 pci_disable_msix(h
->pdev
);
4491 else if (h
->msi_vector
)
4492 pci_disable_msi(h
->pdev
);
4493 #endif /* CONFIG_PCI_MSI */
4496 static void __devexit
hpsa_free_device_info(struct ctlr_info
*h
)
4500 for (i
= 0; i
< h
->ndevices
; i
++)
4504 static void __devexit
hpsa_remove_one(struct pci_dev
*pdev
)
4506 struct ctlr_info
*h
;
4508 if (pci_get_drvdata(pdev
) == NULL
) {
4509 dev_err(&pdev
->dev
, "unable to remove device\n");
4512 h
= pci_get_drvdata(pdev
);
4513 stop_controller_lockup_detector(h
);
4514 hpsa_unregister_scsi(h
); /* unhook from SCSI subsystem */
4515 hpsa_shutdown(pdev
);
4517 iounmap(h
->transtable
);
4518 iounmap(h
->cfgtable
);
4519 hpsa_free_device_info(h
);
4520 hpsa_free_sg_chain_blocks(h
);
4521 pci_free_consistent(h
->pdev
,
4522 h
->nr_cmds
* sizeof(struct CommandList
),
4523 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4524 pci_free_consistent(h
->pdev
,
4525 h
->nr_cmds
* sizeof(struct ErrorInfo
),
4526 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
4527 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
4528 h
->reply_pool
, h
->reply_pool_dhandle
);
4529 kfree(h
->cmd_pool_bits
);
4530 kfree(h
->blockFetchTable
);
4531 kfree(h
->hba_inquiry_data
);
4533 * Deliberately omit pci_disable_device(): it does something nasty to
4534 * Smart Array controllers that pci_enable_device does not undo
4536 pci_release_regions(pdev
);
4537 pci_set_drvdata(pdev
, NULL
);
4541 static int hpsa_suspend(__attribute__((unused
)) struct pci_dev
*pdev
,
4542 __attribute__((unused
)) pm_message_t state
)
4547 static int hpsa_resume(__attribute__((unused
)) struct pci_dev
*pdev
)
4552 static struct pci_driver hpsa_pci_driver
= {
4554 .probe
= hpsa_init_one
,
4555 .remove
= __devexit_p(hpsa_remove_one
),
4556 .id_table
= hpsa_pci_device_id
, /* id_table */
4557 .shutdown
= hpsa_shutdown
,
4558 .suspend
= hpsa_suspend
,
4559 .resume
= hpsa_resume
,
4562 /* Fill in bucket_map[], given nsgs (the max number of
4563 * scatter gather elements supported) and bucket[],
4564 * which is an array of 8 integers. The bucket[] array
4565 * contains 8 different DMA transfer sizes (in 16
4566 * byte increments) which the controller uses to fetch
4567 * commands. This function fills in bucket_map[], which
4568 * maps a given number of scatter gather elements to one of
4569 * the 8 DMA transfer sizes. The point of it is to allow the
4570 * controller to only do as much DMA as needed to fetch the
4571 * command, with the DMA transfer size encoded in the lower
4572 * bits of the command address.
4574 static void calc_bucket_map(int bucket
[], int num_buckets
,
4575 int nsgs
, int *bucket_map
)
4579 /* even a command with 0 SGs requires 4 blocks */
4580 #define MINIMUM_TRANSFER_BLOCKS 4
4581 #define NUM_BUCKETS 8
4582 /* Note, bucket_map must have nsgs+1 entries. */
4583 for (i
= 0; i
<= nsgs
; i
++) {
4584 /* Compute size of a command with i SG entries */
4585 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
4586 b
= num_buckets
; /* Assume the biggest bucket */
4587 /* Find the bucket that is just big enough */
4588 for (j
= 0; j
< 8; j
++) {
4589 if (bucket
[j
] >= size
) {
4594 /* for a command with i SG entries, use bucket b. */
4599 static __devinit
void hpsa_enter_performant_mode(struct ctlr_info
*h
,
4603 unsigned long register_value
;
4605 /* This is a bit complicated. There are 8 registers on
4606 * the controller which we write to to tell it 8 different
4607 * sizes of commands which there may be. It's a way of
4608 * reducing the DMA done to fetch each command. Encoded into
4609 * each command's tag are 3 bits which communicate to the controller
4610 * which of the eight sizes that command fits within. The size of
4611 * each command depends on how many scatter gather entries there are.
4612 * Each SG entry requires 16 bytes. The eight registers are programmed
4613 * with the number of 16-byte blocks a command of that size requires.
4614 * The smallest command possible requires 5 such 16 byte blocks.
4615 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
4616 * blocks. Note, this only extends to the SG entries contained
4617 * within the command block, and does not extend to chained blocks
4618 * of SG elements. bft[] contains the eight values we write to
4619 * the registers. They are not evenly distributed, but have more
4620 * sizes for small commands, and fewer sizes for larger commands.
4622 int bft
[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD
+ 4};
4623 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD
+ 4);
4624 /* 5 = 1 s/g entry or 4k
4625 * 6 = 2 s/g entry or 8k
4626 * 8 = 4 s/g entry or 16k
4627 * 10 = 6 s/g entry or 24k
4630 h
->reply_pool_wraparound
= 1; /* spec: init to 1 */
4632 /* Controller spec: zero out this buffer. */
4633 memset(h
->reply_pool
, 0, h
->reply_pool_size
);
4634 h
->reply_pool_head
= h
->reply_pool
;
4636 bft
[7] = SG_ENTRIES_IN_CMD
+ 4;
4637 calc_bucket_map(bft
, ARRAY_SIZE(bft
),
4638 SG_ENTRIES_IN_CMD
, h
->blockFetchTable
);
4639 for (i
= 0; i
< 8; i
++)
4640 writel(bft
[i
], &h
->transtable
->BlockFetch
[i
]);
4642 /* size of controller ring buffer */
4643 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
4644 writel(1, &h
->transtable
->RepQCount
);
4645 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
4646 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
4647 writel(h
->reply_pool_dhandle
, &h
->transtable
->RepQAddr0Low32
);
4648 writel(0, &h
->transtable
->RepQAddr0High32
);
4649 writel(CFGTBL_Trans_Performant
| use_short_tags
,
4650 &(h
->cfgtable
->HostWrite
.TransportRequest
));
4651 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
4652 hpsa_wait_for_mode_change_ack(h
);
4653 register_value
= readl(&(h
->cfgtable
->TransportActive
));
4654 if (!(register_value
& CFGTBL_Trans_Performant
)) {
4655 dev_warn(&h
->pdev
->dev
, "unable to get board into"
4656 " performant mode\n");
4659 /* Change the access methods to the performant access methods */
4660 h
->access
= SA5_performant_access
;
4661 h
->transMethod
= CFGTBL_Trans_Performant
;
4664 static __devinit
void hpsa_put_ctlr_into_performant_mode(struct ctlr_info
*h
)
4668 if (hpsa_simple_mode
)
4671 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
4672 if (!(trans_support
& PERFORMANT_MODE
))
4675 hpsa_get_max_perf_mode_cmds(h
);
4676 /* Performant mode ring buffer and supporting data structures */
4677 h
->reply_pool_size
= h
->max_commands
* sizeof(u64
);
4678 h
->reply_pool
= pci_alloc_consistent(h
->pdev
, h
->reply_pool_size
,
4679 &(h
->reply_pool_dhandle
));
4681 /* Need a block fetch table for performant mode */
4682 h
->blockFetchTable
= kmalloc(((SG_ENTRIES_IN_CMD
+ 1) *
4683 sizeof(u32
)), GFP_KERNEL
);
4685 if ((h
->reply_pool
== NULL
)
4686 || (h
->blockFetchTable
== NULL
))
4689 hpsa_enter_performant_mode(h
,
4690 trans_support
& CFGTBL_Trans_use_short_tags
);
4696 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
4697 h
->reply_pool
, h
->reply_pool_dhandle
);
4698 kfree(h
->blockFetchTable
);
4702 * This is it. Register the PCI driver information for the cards we control
4703 * the OS will call our registered routines when it finds one of our cards.
4705 static int __init
hpsa_init(void)
4707 return pci_register_driver(&hpsa_pci_driver
);
4710 static void __exit
hpsa_cleanup(void)
4712 pci_unregister_driver(&hpsa_pci_driver
);
4715 module_init(hpsa_init
);
4716 module_exit(hpsa_cleanup
);