2 * Disk Array driver for HP Smart Array SAS controllers
3 * Copyright 2000, 2009 Hewlett-Packard Development Company, L.P.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
12 * NON INFRINGEMENT. See the GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
22 #include <linux/module.h>
23 #include <linux/interrupt.h>
24 #include <linux/types.h>
25 #include <linux/pci.h>
26 #include <linux/kernel.h>
27 #include <linux/slab.h>
28 #include <linux/delay.h>
30 #include <linux/timer.h>
31 #include <linux/seq_file.h>
32 #include <linux/init.h>
33 #include <linux/spinlock.h>
34 #include <linux/compat.h>
35 #include <linux/blktrace_api.h>
36 #include <linux/uaccess.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/completion.h>
40 #include <linux/moduleparam.h>
41 #include <scsi/scsi.h>
42 #include <scsi/scsi_cmnd.h>
43 #include <scsi/scsi_device.h>
44 #include <scsi/scsi_host.h>
45 #include <scsi/scsi_tcq.h>
46 #include <linux/cciss_ioctl.h>
47 #include <linux/string.h>
48 #include <linux/bitmap.h>
49 #include <asm/atomic.h>
50 #include <linux/kthread.h>
54 /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */
55 #define HPSA_DRIVER_VERSION "2.0.2-1"
56 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
58 /* How long to wait (in milliseconds) for board to go into simple mode */
59 #define MAX_CONFIG_WAIT 30000
60 #define MAX_IOCTL_CONFIG_WAIT 1000
62 /*define how many times we will try a command because of bus resets */
63 #define MAX_CMD_RETRIES 3
65 /* Embedded module documentation macros - see modules.h */
66 MODULE_AUTHOR("Hewlett-Packard Company");
67 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
69 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
70 MODULE_VERSION(HPSA_DRIVER_VERSION
);
71 MODULE_LICENSE("GPL");
73 static int hpsa_allow_any
;
74 module_param(hpsa_allow_any
, int, S_IRUGO
|S_IWUSR
);
75 MODULE_PARM_DESC(hpsa_allow_any
,
76 "Allow hpsa driver to access unknown HP Smart Array hardware");
77 static int hpsa_simple_mode
;
78 module_param(hpsa_simple_mode
, int, S_IRUGO
|S_IWUSR
);
79 MODULE_PARM_DESC(hpsa_simple_mode
,
80 "Use 'simple mode' rather than 'performant mode'");
82 /* define the PCI info for the cards we can control */
83 static const struct pci_device_id hpsa_pci_device_id
[] = {
84 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3241},
85 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3243},
86 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3245},
87 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3247},
88 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3249},
89 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x324a},
90 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x324b},
91 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3233},
92 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3250},
93 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3251},
94 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3252},
95 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3253},
96 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3254},
97 {PCI_VENDOR_ID_HP
, PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
,
98 PCI_CLASS_STORAGE_RAID
<< 8, 0xffff << 8, 0},
102 MODULE_DEVICE_TABLE(pci
, hpsa_pci_device_id
);
104 /* board_id = Subsystem Device ID & Vendor ID
105 * product = Marketing Name for the board
106 * access = Address of the struct of function pointers
108 static struct board_type products
[] = {
109 {0x3241103C, "Smart Array P212", &SA5_access
},
110 {0x3243103C, "Smart Array P410", &SA5_access
},
111 {0x3245103C, "Smart Array P410i", &SA5_access
},
112 {0x3247103C, "Smart Array P411", &SA5_access
},
113 {0x3249103C, "Smart Array P812", &SA5_access
},
114 {0x324a103C, "Smart Array P712m", &SA5_access
},
115 {0x324b103C, "Smart Array P711m", &SA5_access
},
116 {0x3250103C, "Smart Array", &SA5_access
},
117 {0x3250113C, "Smart Array", &SA5_access
},
118 {0x3250123C, "Smart Array", &SA5_access
},
119 {0x3250133C, "Smart Array", &SA5_access
},
120 {0x3250143C, "Smart Array", &SA5_access
},
121 {0xFFFF103C, "Unknown Smart Array", &SA5_access
},
124 static int number_of_controllers
;
126 static irqreturn_t
do_hpsa_intr_intx(int irq
, void *dev_id
);
127 static irqreturn_t
do_hpsa_intr_msi(int irq
, void *dev_id
);
128 static int hpsa_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
);
129 static void start_io(struct ctlr_info
*h
);
132 static int hpsa_compat_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
);
135 static void cmd_free(struct ctlr_info
*h
, struct CommandList
*c
);
136 static void cmd_special_free(struct ctlr_info
*h
, struct CommandList
*c
);
137 static struct CommandList
*cmd_alloc(struct ctlr_info
*h
);
138 static struct CommandList
*cmd_special_alloc(struct ctlr_info
*h
);
139 static void fill_cmd(struct CommandList
*c
, u8 cmd
, struct ctlr_info
*h
,
140 void *buff
, size_t size
, u8 page_code
, unsigned char *scsi3addr
,
143 static int hpsa_scsi_queue_command(struct Scsi_Host
*h
, struct scsi_cmnd
*cmd
);
144 static void hpsa_scan_start(struct Scsi_Host
*);
145 static int hpsa_scan_finished(struct Scsi_Host
*sh
,
146 unsigned long elapsed_time
);
147 static int hpsa_change_queue_depth(struct scsi_device
*sdev
,
148 int qdepth
, int reason
);
150 static int hpsa_eh_device_reset_handler(struct scsi_cmnd
*scsicmd
);
151 static int hpsa_slave_alloc(struct scsi_device
*sdev
);
152 static void hpsa_slave_destroy(struct scsi_device
*sdev
);
154 static ssize_t
raid_level_show(struct device
*dev
,
155 struct device_attribute
*attr
, char *buf
);
156 static ssize_t
lunid_show(struct device
*dev
,
157 struct device_attribute
*attr
, char *buf
);
158 static ssize_t
unique_id_show(struct device
*dev
,
159 struct device_attribute
*attr
, char *buf
);
160 static ssize_t
host_show_firmware_revision(struct device
*dev
,
161 struct device_attribute
*attr
, char *buf
);
162 static ssize_t
host_show_commands_outstanding(struct device
*dev
,
163 struct device_attribute
*attr
, char *buf
);
164 static ssize_t
host_show_transport_mode(struct device
*dev
,
165 struct device_attribute
*attr
, char *buf
);
166 static void hpsa_update_scsi_devices(struct ctlr_info
*h
, int hostno
);
167 static ssize_t
host_store_rescan(struct device
*dev
,
168 struct device_attribute
*attr
, const char *buf
, size_t count
);
169 static int check_for_unit_attention(struct ctlr_info
*h
,
170 struct CommandList
*c
);
171 static void check_ioctl_unit_attention(struct ctlr_info
*h
,
172 struct CommandList
*c
);
173 /* performant mode helper functions */
174 static void calc_bucket_map(int *bucket
, int num_buckets
,
175 int nsgs
, int *bucket_map
);
176 static __devinit
void hpsa_put_ctlr_into_performant_mode(struct ctlr_info
*h
);
177 static inline u32
next_command(struct ctlr_info
*h
);
178 static int __devinit
hpsa_find_cfg_addrs(struct pci_dev
*pdev
,
179 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
181 static int __devinit
hpsa_pci_find_memory_BAR(struct pci_dev
*pdev
,
182 unsigned long *memory_bar
);
183 static int __devinit
hpsa_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
);
184 static int __devinit
hpsa_wait_for_board_state(struct pci_dev
*pdev
,
185 void __iomem
*vaddr
, int wait_for_ready
);
186 #define BOARD_NOT_READY 0
187 #define BOARD_READY 1
189 static DEVICE_ATTR(raid_level
, S_IRUGO
, raid_level_show
, NULL
);
190 static DEVICE_ATTR(lunid
, S_IRUGO
, lunid_show
, NULL
);
191 static DEVICE_ATTR(unique_id
, S_IRUGO
, unique_id_show
, NULL
);
192 static DEVICE_ATTR(rescan
, S_IWUSR
, NULL
, host_store_rescan
);
193 static DEVICE_ATTR(firmware_revision
, S_IRUGO
,
194 host_show_firmware_revision
, NULL
);
195 static DEVICE_ATTR(commands_outstanding
, S_IRUGO
,
196 host_show_commands_outstanding
, NULL
);
197 static DEVICE_ATTR(transport_mode
, S_IRUGO
,
198 host_show_transport_mode
, NULL
);
200 static struct device_attribute
*hpsa_sdev_attrs
[] = {
201 &dev_attr_raid_level
,
207 static struct device_attribute
*hpsa_shost_attrs
[] = {
209 &dev_attr_firmware_revision
,
210 &dev_attr_commands_outstanding
,
211 &dev_attr_transport_mode
,
215 static struct scsi_host_template hpsa_driver_template
= {
216 .module
= THIS_MODULE
,
219 .queuecommand
= hpsa_scsi_queue_command
,
220 .scan_start
= hpsa_scan_start
,
221 .scan_finished
= hpsa_scan_finished
,
222 .change_queue_depth
= hpsa_change_queue_depth
,
224 .use_clustering
= ENABLE_CLUSTERING
,
225 .eh_device_reset_handler
= hpsa_eh_device_reset_handler
,
227 .slave_alloc
= hpsa_slave_alloc
,
228 .slave_destroy
= hpsa_slave_destroy
,
230 .compat_ioctl
= hpsa_compat_ioctl
,
232 .sdev_attrs
= hpsa_sdev_attrs
,
233 .shost_attrs
= hpsa_shost_attrs
,
236 static inline struct ctlr_info
*sdev_to_hba(struct scsi_device
*sdev
)
238 unsigned long *priv
= shost_priv(sdev
->host
);
239 return (struct ctlr_info
*) *priv
;
242 static inline struct ctlr_info
*shost_to_hba(struct Scsi_Host
*sh
)
244 unsigned long *priv
= shost_priv(sh
);
245 return (struct ctlr_info
*) *priv
;
248 static int check_for_unit_attention(struct ctlr_info
*h
,
249 struct CommandList
*c
)
251 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
254 switch (c
->err_info
->SenseInfo
[12]) {
256 dev_warn(&h
->pdev
->dev
, "hpsa%d: a state change "
257 "detected, command retried\n", h
->ctlr
);
260 dev_warn(&h
->pdev
->dev
, "hpsa%d: LUN failure "
261 "detected, action required\n", h
->ctlr
);
263 case REPORT_LUNS_CHANGED
:
264 dev_warn(&h
->pdev
->dev
, "hpsa%d: report LUN data "
265 "changed, action required\n", h
->ctlr
);
267 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
271 dev_warn(&h
->pdev
->dev
, "hpsa%d: a power on "
272 "or device reset detected\n", h
->ctlr
);
274 case UNIT_ATTENTION_CLEARED
:
275 dev_warn(&h
->pdev
->dev
, "hpsa%d: unit attention "
276 "cleared by another initiator\n", h
->ctlr
);
279 dev_warn(&h
->pdev
->dev
, "hpsa%d: unknown "
280 "unit attention detected\n", h
->ctlr
);
286 static ssize_t
host_store_rescan(struct device
*dev
,
287 struct device_attribute
*attr
,
288 const char *buf
, size_t count
)
291 struct Scsi_Host
*shost
= class_to_shost(dev
);
292 h
= shost_to_hba(shost
);
293 hpsa_scan_start(h
->scsi_host
);
297 static ssize_t
host_show_firmware_revision(struct device
*dev
,
298 struct device_attribute
*attr
, char *buf
)
301 struct Scsi_Host
*shost
= class_to_shost(dev
);
302 unsigned char *fwrev
;
304 h
= shost_to_hba(shost
);
305 if (!h
->hba_inquiry_data
)
307 fwrev
= &h
->hba_inquiry_data
[32];
308 return snprintf(buf
, 20, "%c%c%c%c\n",
309 fwrev
[0], fwrev
[1], fwrev
[2], fwrev
[3]);
312 static ssize_t
host_show_commands_outstanding(struct device
*dev
,
313 struct device_attribute
*attr
, char *buf
)
315 struct Scsi_Host
*shost
= class_to_shost(dev
);
316 struct ctlr_info
*h
= shost_to_hba(shost
);
318 return snprintf(buf
, 20, "%d\n", h
->commands_outstanding
);
321 static ssize_t
host_show_transport_mode(struct device
*dev
,
322 struct device_attribute
*attr
, char *buf
)
325 struct Scsi_Host
*shost
= class_to_shost(dev
);
327 h
= shost_to_hba(shost
);
328 return snprintf(buf
, 20, "%s\n",
329 h
->transMethod
& CFGTBL_Trans_Performant
?
330 "performant" : "simple");
333 /* Enqueuing and dequeuing functions for cmdlists. */
334 static inline void addQ(struct list_head
*list
, struct CommandList
*c
)
336 list_add_tail(&c
->list
, list
);
339 static inline u32
next_command(struct ctlr_info
*h
)
343 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
344 return h
->access
.command_completed(h
);
346 if ((*(h
->reply_pool_head
) & 1) == (h
->reply_pool_wraparound
)) {
347 a
= *(h
->reply_pool_head
); /* Next cmd in ring buffer */
348 (h
->reply_pool_head
)++;
349 h
->commands_outstanding
--;
353 /* Check for wraparound */
354 if (h
->reply_pool_head
== (h
->reply_pool
+ h
->max_commands
)) {
355 h
->reply_pool_head
= h
->reply_pool
;
356 h
->reply_pool_wraparound
^= 1;
361 /* set_performant_mode: Modify the tag for cciss performant
362 * set bit 0 for pull model, bits 3-1 for block fetch
365 static void set_performant_mode(struct ctlr_info
*h
, struct CommandList
*c
)
367 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
368 c
->busaddr
|= 1 | (h
->blockFetchTable
[c
->Header
.SGList
] << 1);
371 static void enqueue_cmd_and_start_io(struct ctlr_info
*h
,
372 struct CommandList
*c
)
376 set_performant_mode(h
, c
);
377 spin_lock_irqsave(&h
->lock
, flags
);
381 spin_unlock_irqrestore(&h
->lock
, flags
);
384 static inline void removeQ(struct CommandList
*c
)
386 if (WARN_ON(list_empty(&c
->list
)))
388 list_del_init(&c
->list
);
391 static inline int is_hba_lunid(unsigned char scsi3addr
[])
393 return memcmp(scsi3addr
, RAID_CTLR_LUNID
, 8) == 0;
396 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr
[])
398 return (scsi3addr
[3] & 0xC0) == 0x40;
401 static inline int is_scsi_rev_5(struct ctlr_info
*h
)
403 if (!h
->hba_inquiry_data
)
405 if ((h
->hba_inquiry_data
[2] & 0x07) == 5)
410 static const char *raid_label
[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
413 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
415 static ssize_t
raid_level_show(struct device
*dev
,
416 struct device_attribute
*attr
, char *buf
)
419 unsigned char rlevel
;
421 struct scsi_device
*sdev
;
422 struct hpsa_scsi_dev_t
*hdev
;
425 sdev
= to_scsi_device(dev
);
426 h
= sdev_to_hba(sdev
);
427 spin_lock_irqsave(&h
->lock
, flags
);
428 hdev
= sdev
->hostdata
;
430 spin_unlock_irqrestore(&h
->lock
, flags
);
434 /* Is this even a logical drive? */
435 if (!is_logical_dev_addr_mode(hdev
->scsi3addr
)) {
436 spin_unlock_irqrestore(&h
->lock
, flags
);
437 l
= snprintf(buf
, PAGE_SIZE
, "N/A\n");
441 rlevel
= hdev
->raid_level
;
442 spin_unlock_irqrestore(&h
->lock
, flags
);
443 if (rlevel
> RAID_UNKNOWN
)
444 rlevel
= RAID_UNKNOWN
;
445 l
= snprintf(buf
, PAGE_SIZE
, "RAID %s\n", raid_label
[rlevel
]);
449 static ssize_t
lunid_show(struct device
*dev
,
450 struct device_attribute
*attr
, char *buf
)
453 struct scsi_device
*sdev
;
454 struct hpsa_scsi_dev_t
*hdev
;
456 unsigned char lunid
[8];
458 sdev
= to_scsi_device(dev
);
459 h
= sdev_to_hba(sdev
);
460 spin_lock_irqsave(&h
->lock
, flags
);
461 hdev
= sdev
->hostdata
;
463 spin_unlock_irqrestore(&h
->lock
, flags
);
466 memcpy(lunid
, hdev
->scsi3addr
, sizeof(lunid
));
467 spin_unlock_irqrestore(&h
->lock
, flags
);
468 return snprintf(buf
, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
469 lunid
[0], lunid
[1], lunid
[2], lunid
[3],
470 lunid
[4], lunid
[5], lunid
[6], lunid
[7]);
473 static ssize_t
unique_id_show(struct device
*dev
,
474 struct device_attribute
*attr
, char *buf
)
477 struct scsi_device
*sdev
;
478 struct hpsa_scsi_dev_t
*hdev
;
480 unsigned char sn
[16];
482 sdev
= to_scsi_device(dev
);
483 h
= sdev_to_hba(sdev
);
484 spin_lock_irqsave(&h
->lock
, flags
);
485 hdev
= sdev
->hostdata
;
487 spin_unlock_irqrestore(&h
->lock
, flags
);
490 memcpy(sn
, hdev
->device_id
, sizeof(sn
));
491 spin_unlock_irqrestore(&h
->lock
, flags
);
492 return snprintf(buf
, 16 * 2 + 2,
493 "%02X%02X%02X%02X%02X%02X%02X%02X"
494 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
495 sn
[0], sn
[1], sn
[2], sn
[3],
496 sn
[4], sn
[5], sn
[6], sn
[7],
497 sn
[8], sn
[9], sn
[10], sn
[11],
498 sn
[12], sn
[13], sn
[14], sn
[15]);
501 static int hpsa_find_target_lun(struct ctlr_info
*h
,
502 unsigned char scsi3addr
[], int bus
, int *target
, int *lun
)
504 /* finds an unused bus, target, lun for a new physical device
505 * assumes h->devlock is held
508 DECLARE_BITMAP(lun_taken
, HPSA_MAX_SCSI_DEVS_PER_HBA
);
510 memset(&lun_taken
[0], 0, HPSA_MAX_SCSI_DEVS_PER_HBA
>> 3);
512 for (i
= 0; i
< h
->ndevices
; i
++) {
513 if (h
->dev
[i
]->bus
== bus
&& h
->dev
[i
]->target
!= -1)
514 set_bit(h
->dev
[i
]->target
, lun_taken
);
517 for (i
= 0; i
< HPSA_MAX_SCSI_DEVS_PER_HBA
; i
++) {
518 if (!test_bit(i
, lun_taken
)) {
529 /* Add an entry into h->dev[] array. */
530 static int hpsa_scsi_add_entry(struct ctlr_info
*h
, int hostno
,
531 struct hpsa_scsi_dev_t
*device
,
532 struct hpsa_scsi_dev_t
*added
[], int *nadded
)
534 /* assumes h->devlock is held */
537 unsigned char addr1
[8], addr2
[8];
538 struct hpsa_scsi_dev_t
*sd
;
540 if (n
>= HPSA_MAX_SCSI_DEVS_PER_HBA
) {
541 dev_err(&h
->pdev
->dev
, "too many devices, some will be "
546 /* physical devices do not have lun or target assigned until now. */
547 if (device
->lun
!= -1)
548 /* Logical device, lun is already assigned. */
551 /* If this device a non-zero lun of a multi-lun device
552 * byte 4 of the 8-byte LUN addr will contain the logical
553 * unit no, zero otherise.
555 if (device
->scsi3addr
[4] == 0) {
556 /* This is not a non-zero lun of a multi-lun device */
557 if (hpsa_find_target_lun(h
, device
->scsi3addr
,
558 device
->bus
, &device
->target
, &device
->lun
) != 0)
563 /* This is a non-zero lun of a multi-lun device.
564 * Search through our list and find the device which
565 * has the same 8 byte LUN address, excepting byte 4.
566 * Assign the same bus and target for this new LUN.
567 * Use the logical unit number from the firmware.
569 memcpy(addr1
, device
->scsi3addr
, 8);
571 for (i
= 0; i
< n
; i
++) {
573 memcpy(addr2
, sd
->scsi3addr
, 8);
575 /* differ only in byte 4? */
576 if (memcmp(addr1
, addr2
, 8) == 0) {
577 device
->bus
= sd
->bus
;
578 device
->target
= sd
->target
;
579 device
->lun
= device
->scsi3addr
[4];
583 if (device
->lun
== -1) {
584 dev_warn(&h
->pdev
->dev
, "physical device with no LUN=0,"
585 " suspect firmware bug or unsupported hardware "
594 added
[*nadded
] = device
;
597 /* initially, (before registering with scsi layer) we don't
598 * know our hostno and we don't want to print anything first
599 * time anyway (the scsi layer's inquiries will show that info)
601 /* if (hostno != -1) */
602 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d added.\n",
603 scsi_device_type(device
->devtype
), hostno
,
604 device
->bus
, device
->target
, device
->lun
);
608 /* Replace an entry from h->dev[] array. */
609 static void hpsa_scsi_replace_entry(struct ctlr_info
*h
, int hostno
,
610 int entry
, struct hpsa_scsi_dev_t
*new_entry
,
611 struct hpsa_scsi_dev_t
*added
[], int *nadded
,
612 struct hpsa_scsi_dev_t
*removed
[], int *nremoved
)
614 /* assumes h->devlock is held */
615 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_SCSI_DEVS_PER_HBA
);
616 removed
[*nremoved
] = h
->dev
[entry
];
618 h
->dev
[entry
] = new_entry
;
619 added
[*nadded
] = new_entry
;
621 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d changed.\n",
622 scsi_device_type(new_entry
->devtype
), hostno
, new_entry
->bus
,
623 new_entry
->target
, new_entry
->lun
);
626 /* Remove an entry from h->dev[] array. */
627 static void hpsa_scsi_remove_entry(struct ctlr_info
*h
, int hostno
, int entry
,
628 struct hpsa_scsi_dev_t
*removed
[], int *nremoved
)
630 /* assumes h->devlock is held */
632 struct hpsa_scsi_dev_t
*sd
;
634 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_SCSI_DEVS_PER_HBA
);
637 removed
[*nremoved
] = h
->dev
[entry
];
640 for (i
= entry
; i
< h
->ndevices
-1; i
++)
641 h
->dev
[i
] = h
->dev
[i
+1];
643 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d removed.\n",
644 scsi_device_type(sd
->devtype
), hostno
, sd
->bus
, sd
->target
,
648 #define SCSI3ADDR_EQ(a, b) ( \
649 (a)[7] == (b)[7] && \
650 (a)[6] == (b)[6] && \
651 (a)[5] == (b)[5] && \
652 (a)[4] == (b)[4] && \
653 (a)[3] == (b)[3] && \
654 (a)[2] == (b)[2] && \
655 (a)[1] == (b)[1] && \
658 static void fixup_botched_add(struct ctlr_info
*h
,
659 struct hpsa_scsi_dev_t
*added
)
661 /* called when scsi_add_device fails in order to re-adjust
662 * h->dev[] to match the mid layer's view.
667 spin_lock_irqsave(&h
->lock
, flags
);
668 for (i
= 0; i
< h
->ndevices
; i
++) {
669 if (h
->dev
[i
] == added
) {
670 for (j
= i
; j
< h
->ndevices
-1; j
++)
671 h
->dev
[j
] = h
->dev
[j
+1];
676 spin_unlock_irqrestore(&h
->lock
, flags
);
680 static inline int device_is_the_same(struct hpsa_scsi_dev_t
*dev1
,
681 struct hpsa_scsi_dev_t
*dev2
)
683 /* we compare everything except lun and target as these
684 * are not yet assigned. Compare parts likely
687 if (memcmp(dev1
->scsi3addr
, dev2
->scsi3addr
,
688 sizeof(dev1
->scsi3addr
)) != 0)
690 if (memcmp(dev1
->device_id
, dev2
->device_id
,
691 sizeof(dev1
->device_id
)) != 0)
693 if (memcmp(dev1
->model
, dev2
->model
, sizeof(dev1
->model
)) != 0)
695 if (memcmp(dev1
->vendor
, dev2
->vendor
, sizeof(dev1
->vendor
)) != 0)
697 if (dev1
->devtype
!= dev2
->devtype
)
699 if (dev1
->bus
!= dev2
->bus
)
704 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
705 * and return needle location in *index. If scsi3addr matches, but not
706 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
707 * location in *index. If needle not found, return DEVICE_NOT_FOUND.
709 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t
*needle
,
710 struct hpsa_scsi_dev_t
*haystack
[], int haystack_size
,
714 #define DEVICE_NOT_FOUND 0
715 #define DEVICE_CHANGED 1
716 #define DEVICE_SAME 2
717 for (i
= 0; i
< haystack_size
; i
++) {
718 if (haystack
[i
] == NULL
) /* previously removed. */
720 if (SCSI3ADDR_EQ(needle
->scsi3addr
, haystack
[i
]->scsi3addr
)) {
722 if (device_is_the_same(needle
, haystack
[i
]))
725 return DEVICE_CHANGED
;
729 return DEVICE_NOT_FOUND
;
732 static void adjust_hpsa_scsi_table(struct ctlr_info
*h
, int hostno
,
733 struct hpsa_scsi_dev_t
*sd
[], int nsds
)
735 /* sd contains scsi3 addresses and devtypes, and inquiry
736 * data. This function takes what's in sd to be the current
737 * reality and updates h->dev[] to reflect that reality.
739 int i
, entry
, device_change
, changes
= 0;
740 struct hpsa_scsi_dev_t
*csd
;
742 struct hpsa_scsi_dev_t
**added
, **removed
;
743 int nadded
, nremoved
;
744 struct Scsi_Host
*sh
= NULL
;
746 added
= kzalloc(sizeof(*added
) * HPSA_MAX_SCSI_DEVS_PER_HBA
,
748 removed
= kzalloc(sizeof(*removed
) * HPSA_MAX_SCSI_DEVS_PER_HBA
,
751 if (!added
|| !removed
) {
752 dev_warn(&h
->pdev
->dev
, "out of memory in "
753 "adjust_hpsa_scsi_table\n");
757 spin_lock_irqsave(&h
->devlock
, flags
);
759 /* find any devices in h->dev[] that are not in
760 * sd[] and remove them from h->dev[], and for any
761 * devices which have changed, remove the old device
762 * info and add the new device info.
767 while (i
< h
->ndevices
) {
769 device_change
= hpsa_scsi_find_entry(csd
, sd
, nsds
, &entry
);
770 if (device_change
== DEVICE_NOT_FOUND
) {
772 hpsa_scsi_remove_entry(h
, hostno
, i
,
774 continue; /* remove ^^^, hence i not incremented */
775 } else if (device_change
== DEVICE_CHANGED
) {
777 hpsa_scsi_replace_entry(h
, hostno
, i
, sd
[entry
],
778 added
, &nadded
, removed
, &nremoved
);
779 /* Set it to NULL to prevent it from being freed
780 * at the bottom of hpsa_update_scsi_devices()
787 /* Now, make sure every device listed in sd[] is also
788 * listed in h->dev[], adding them if they aren't found
791 for (i
= 0; i
< nsds
; i
++) {
792 if (!sd
[i
]) /* if already added above. */
794 device_change
= hpsa_scsi_find_entry(sd
[i
], h
->dev
,
795 h
->ndevices
, &entry
);
796 if (device_change
== DEVICE_NOT_FOUND
) {
798 if (hpsa_scsi_add_entry(h
, hostno
, sd
[i
],
799 added
, &nadded
) != 0)
801 sd
[i
] = NULL
; /* prevent from being freed later. */
802 } else if (device_change
== DEVICE_CHANGED
) {
803 /* should never happen... */
805 dev_warn(&h
->pdev
->dev
,
806 "device unexpectedly changed.\n");
807 /* but if it does happen, we just ignore that device */
810 spin_unlock_irqrestore(&h
->devlock
, flags
);
812 /* Don't notify scsi mid layer of any changes the first time through
813 * (or if there are no changes) scsi_scan_host will do it later the
814 * first time through.
816 if (hostno
== -1 || !changes
)
820 /* Notify scsi mid layer of any removed devices */
821 for (i
= 0; i
< nremoved
; i
++) {
822 struct scsi_device
*sdev
=
823 scsi_device_lookup(sh
, removed
[i
]->bus
,
824 removed
[i
]->target
, removed
[i
]->lun
);
826 scsi_remove_device(sdev
);
827 scsi_device_put(sdev
);
829 /* We don't expect to get here.
830 * future cmds to this device will get selection
831 * timeout as if the device was gone.
833 dev_warn(&h
->pdev
->dev
, "didn't find c%db%dt%dl%d "
834 " for removal.", hostno
, removed
[i
]->bus
,
835 removed
[i
]->target
, removed
[i
]->lun
);
841 /* Notify scsi mid layer of any added devices */
842 for (i
= 0; i
< nadded
; i
++) {
843 if (scsi_add_device(sh
, added
[i
]->bus
,
844 added
[i
]->target
, added
[i
]->lun
) == 0)
846 dev_warn(&h
->pdev
->dev
, "scsi_add_device c%db%dt%dl%d failed, "
847 "device not added.\n", hostno
, added
[i
]->bus
,
848 added
[i
]->target
, added
[i
]->lun
);
849 /* now we have to remove it from h->dev,
850 * since it didn't get added to scsi mid layer
852 fixup_botched_add(h
, added
[i
]);
861 * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t *
862 * Assume's h->devlock is held.
864 static struct hpsa_scsi_dev_t
*lookup_hpsa_scsi_dev(struct ctlr_info
*h
,
865 int bus
, int target
, int lun
)
868 struct hpsa_scsi_dev_t
*sd
;
870 for (i
= 0; i
< h
->ndevices
; i
++) {
872 if (sd
->bus
== bus
&& sd
->target
== target
&& sd
->lun
== lun
)
878 /* link sdev->hostdata to our per-device structure. */
879 static int hpsa_slave_alloc(struct scsi_device
*sdev
)
881 struct hpsa_scsi_dev_t
*sd
;
885 h
= sdev_to_hba(sdev
);
886 spin_lock_irqsave(&h
->devlock
, flags
);
887 sd
= lookup_hpsa_scsi_dev(h
, sdev_channel(sdev
),
888 sdev_id(sdev
), sdev
->lun
);
891 spin_unlock_irqrestore(&h
->devlock
, flags
);
895 static void hpsa_slave_destroy(struct scsi_device
*sdev
)
900 static void hpsa_scsi_setup(struct ctlr_info
*h
)
904 spin_lock_init(&h
->devlock
);
907 static void hpsa_free_sg_chain_blocks(struct ctlr_info
*h
)
913 for (i
= 0; i
< h
->nr_cmds
; i
++) {
914 kfree(h
->cmd_sg_list
[i
]);
915 h
->cmd_sg_list
[i
] = NULL
;
917 kfree(h
->cmd_sg_list
);
918 h
->cmd_sg_list
= NULL
;
921 static int hpsa_allocate_sg_chain_blocks(struct ctlr_info
*h
)
925 if (h
->chainsize
<= 0)
928 h
->cmd_sg_list
= kzalloc(sizeof(*h
->cmd_sg_list
) * h
->nr_cmds
,
932 for (i
= 0; i
< h
->nr_cmds
; i
++) {
933 h
->cmd_sg_list
[i
] = kmalloc(sizeof(*h
->cmd_sg_list
[i
]) *
934 h
->chainsize
, GFP_KERNEL
);
935 if (!h
->cmd_sg_list
[i
])
941 hpsa_free_sg_chain_blocks(h
);
945 static void hpsa_map_sg_chain_block(struct ctlr_info
*h
,
946 struct CommandList
*c
)
948 struct SGDescriptor
*chain_sg
, *chain_block
;
951 chain_sg
= &c
->SG
[h
->max_cmd_sg_entries
- 1];
952 chain_block
= h
->cmd_sg_list
[c
->cmdindex
];
953 chain_sg
->Ext
= HPSA_SG_CHAIN
;
954 chain_sg
->Len
= sizeof(*chain_sg
) *
955 (c
->Header
.SGTotal
- h
->max_cmd_sg_entries
);
956 temp64
= pci_map_single(h
->pdev
, chain_block
, chain_sg
->Len
,
958 chain_sg
->Addr
.lower
= (u32
) (temp64
& 0x0FFFFFFFFULL
);
959 chain_sg
->Addr
.upper
= (u32
) ((temp64
>> 32) & 0x0FFFFFFFFULL
);
962 static void hpsa_unmap_sg_chain_block(struct ctlr_info
*h
,
963 struct CommandList
*c
)
965 struct SGDescriptor
*chain_sg
;
968 if (c
->Header
.SGTotal
<= h
->max_cmd_sg_entries
)
971 chain_sg
= &c
->SG
[h
->max_cmd_sg_entries
- 1];
972 temp64
.val32
.lower
= chain_sg
->Addr
.lower
;
973 temp64
.val32
.upper
= chain_sg
->Addr
.upper
;
974 pci_unmap_single(h
->pdev
, temp64
.val
, chain_sg
->Len
, PCI_DMA_TODEVICE
);
977 static void complete_scsi_command(struct CommandList
*cp
,
978 int timeout
, u32 tag
)
980 struct scsi_cmnd
*cmd
;
982 struct ErrorInfo
*ei
;
984 unsigned char sense_key
;
985 unsigned char asc
; /* additional sense code */
986 unsigned char ascq
; /* additional sense code qualifier */
989 cmd
= (struct scsi_cmnd
*) cp
->scsi_cmd
;
992 scsi_dma_unmap(cmd
); /* undo the DMA mappings */
993 if (cp
->Header
.SGTotal
> h
->max_cmd_sg_entries
)
994 hpsa_unmap_sg_chain_block(h
, cp
);
996 cmd
->result
= (DID_OK
<< 16); /* host byte */
997 cmd
->result
|= (COMMAND_COMPLETE
<< 8); /* msg byte */
998 cmd
->result
|= ei
->ScsiStatus
;
1000 /* copy the sense data whether we need to or not. */
1001 memcpy(cmd
->sense_buffer
, ei
->SenseInfo
,
1002 ei
->SenseLen
> SCSI_SENSE_BUFFERSIZE
?
1003 SCSI_SENSE_BUFFERSIZE
:
1005 scsi_set_resid(cmd
, ei
->ResidualCnt
);
1007 if (ei
->CommandStatus
== 0) {
1008 cmd
->scsi_done(cmd
);
1013 /* an error has occurred */
1014 switch (ei
->CommandStatus
) {
1016 case CMD_TARGET_STATUS
:
1017 if (ei
->ScsiStatus
) {
1019 sense_key
= 0xf & ei
->SenseInfo
[2];
1020 /* Get additional sense code */
1021 asc
= ei
->SenseInfo
[12];
1022 /* Get addition sense code qualifier */
1023 ascq
= ei
->SenseInfo
[13];
1026 if (ei
->ScsiStatus
== SAM_STAT_CHECK_CONDITION
) {
1027 if (check_for_unit_attention(h
, cp
)) {
1028 cmd
->result
= DID_SOFT_ERROR
<< 16;
1031 if (sense_key
== ILLEGAL_REQUEST
) {
1033 * SCSI REPORT_LUNS is commonly unsupported on
1034 * Smart Array. Suppress noisy complaint.
1036 if (cp
->Request
.CDB
[0] == REPORT_LUNS
)
1039 /* If ASC/ASCQ indicate Logical Unit
1040 * Not Supported condition,
1042 if ((asc
== 0x25) && (ascq
== 0x0)) {
1043 dev_warn(&h
->pdev
->dev
, "cp %p "
1044 "has check condition\n", cp
);
1049 if (sense_key
== NOT_READY
) {
1050 /* If Sense is Not Ready, Logical Unit
1051 * Not ready, Manual Intervention
1054 if ((asc
== 0x04) && (ascq
== 0x03)) {
1055 dev_warn(&h
->pdev
->dev
, "cp %p "
1056 "has check condition: unit "
1057 "not ready, manual "
1058 "intervention required\n", cp
);
1062 if (sense_key
== ABORTED_COMMAND
) {
1063 /* Aborted command is retryable */
1064 dev_warn(&h
->pdev
->dev
, "cp %p "
1065 "has check condition: aborted command: "
1066 "ASC: 0x%x, ASCQ: 0x%x\n",
1068 cmd
->result
= DID_SOFT_ERROR
<< 16;
1071 /* Must be some other type of check condition */
1072 dev_warn(&h
->pdev
->dev
, "cp %p has check condition: "
1074 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1075 "Returning result: 0x%x, "
1076 "cmd=[%02x %02x %02x %02x %02x "
1077 "%02x %02x %02x %02x %02x %02x "
1078 "%02x %02x %02x %02x %02x]\n",
1079 cp
, sense_key
, asc
, ascq
,
1081 cmd
->cmnd
[0], cmd
->cmnd
[1],
1082 cmd
->cmnd
[2], cmd
->cmnd
[3],
1083 cmd
->cmnd
[4], cmd
->cmnd
[5],
1084 cmd
->cmnd
[6], cmd
->cmnd
[7],
1085 cmd
->cmnd
[8], cmd
->cmnd
[9],
1086 cmd
->cmnd
[10], cmd
->cmnd
[11],
1087 cmd
->cmnd
[12], cmd
->cmnd
[13],
1088 cmd
->cmnd
[14], cmd
->cmnd
[15]);
1093 /* Problem was not a check condition
1094 * Pass it up to the upper layers...
1096 if (ei
->ScsiStatus
) {
1097 dev_warn(&h
->pdev
->dev
, "cp %p has status 0x%x "
1098 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1099 "Returning result: 0x%x\n",
1101 sense_key
, asc
, ascq
,
1103 } else { /* scsi status is zero??? How??? */
1104 dev_warn(&h
->pdev
->dev
, "cp %p SCSI status was 0. "
1105 "Returning no connection.\n", cp
),
1107 /* Ordinarily, this case should never happen,
1108 * but there is a bug in some released firmware
1109 * revisions that allows it to happen if, for
1110 * example, a 4100 backplane loses power and
1111 * the tape drive is in it. We assume that
1112 * it's a fatal error of some kind because we
1113 * can't show that it wasn't. We will make it
1114 * look like selection timeout since that is
1115 * the most common reason for this to occur,
1116 * and it's severe enough.
1119 cmd
->result
= DID_NO_CONNECT
<< 16;
1123 case CMD_DATA_UNDERRUN
: /* let mid layer handle it. */
1125 case CMD_DATA_OVERRUN
:
1126 dev_warn(&h
->pdev
->dev
, "cp %p has"
1127 " completed with data overrun "
1131 /* print_bytes(cp, sizeof(*cp), 1, 0);
1133 /* We get CMD_INVALID if you address a non-existent device
1134 * instead of a selection timeout (no response). You will
1135 * see this if you yank out a drive, then try to access it.
1136 * This is kind of a shame because it means that any other
1137 * CMD_INVALID (e.g. driver bug) will get interpreted as a
1138 * missing target. */
1139 cmd
->result
= DID_NO_CONNECT
<< 16;
1142 case CMD_PROTOCOL_ERR
:
1143 dev_warn(&h
->pdev
->dev
, "cp %p has "
1144 "protocol error \n", cp
);
1146 case CMD_HARDWARE_ERR
:
1147 cmd
->result
= DID_ERROR
<< 16;
1148 dev_warn(&h
->pdev
->dev
, "cp %p had hardware error\n", cp
);
1150 case CMD_CONNECTION_LOST
:
1151 cmd
->result
= DID_ERROR
<< 16;
1152 dev_warn(&h
->pdev
->dev
, "cp %p had connection lost\n", cp
);
1155 cmd
->result
= DID_ABORT
<< 16;
1156 dev_warn(&h
->pdev
->dev
, "cp %p was aborted with status 0x%x\n",
1157 cp
, ei
->ScsiStatus
);
1159 case CMD_ABORT_FAILED
:
1160 cmd
->result
= DID_ERROR
<< 16;
1161 dev_warn(&h
->pdev
->dev
, "cp %p reports abort failed\n", cp
);
1163 case CMD_UNSOLICITED_ABORT
:
1164 cmd
->result
= DID_RESET
<< 16;
1165 dev_warn(&h
->pdev
->dev
, "cp %p aborted do to an unsolicited "
1169 cmd
->result
= DID_TIME_OUT
<< 16;
1170 dev_warn(&h
->pdev
->dev
, "cp %p timedout\n", cp
);
1172 case CMD_UNABORTABLE
:
1173 cmd
->result
= DID_ERROR
<< 16;
1174 dev_warn(&h
->pdev
->dev
, "Command unabortable\n");
1177 cmd
->result
= DID_ERROR
<< 16;
1178 dev_warn(&h
->pdev
->dev
, "cp %p returned unknown status %x\n",
1179 cp
, ei
->CommandStatus
);
1181 cmd
->scsi_done(cmd
);
1185 static int hpsa_scsi_detect(struct ctlr_info
*h
)
1187 struct Scsi_Host
*sh
;
1190 sh
= scsi_host_alloc(&hpsa_driver_template
, sizeof(h
));
1197 sh
->max_channel
= 3;
1198 sh
->max_cmd_len
= MAX_COMMAND_SIZE
;
1199 sh
->max_lun
= HPSA_MAX_LUN
;
1200 sh
->max_id
= HPSA_MAX_LUN
;
1201 sh
->can_queue
= h
->nr_cmds
;
1202 sh
->cmd_per_lun
= h
->nr_cmds
;
1203 sh
->sg_tablesize
= h
->maxsgentries
;
1205 sh
->hostdata
[0] = (unsigned long) h
;
1206 sh
->irq
= h
->intr
[h
->intr_mode
];
1207 sh
->unique_id
= sh
->irq
;
1208 error
= scsi_add_host(sh
, &h
->pdev
->dev
);
1215 dev_err(&h
->pdev
->dev
, "hpsa_scsi_detect: scsi_add_host"
1216 " failed for controller %d\n", h
->ctlr
);
1220 dev_err(&h
->pdev
->dev
, "hpsa_scsi_detect: scsi_host_alloc"
1221 " failed for controller %d\n", h
->ctlr
);
1225 static void hpsa_pci_unmap(struct pci_dev
*pdev
,
1226 struct CommandList
*c
, int sg_used
, int data_direction
)
1229 union u64bit addr64
;
1231 for (i
= 0; i
< sg_used
; i
++) {
1232 addr64
.val32
.lower
= c
->SG
[i
].Addr
.lower
;
1233 addr64
.val32
.upper
= c
->SG
[i
].Addr
.upper
;
1234 pci_unmap_single(pdev
, (dma_addr_t
) addr64
.val
, c
->SG
[i
].Len
,
1239 static void hpsa_map_one(struct pci_dev
*pdev
,
1240 struct CommandList
*cp
,
1247 if (buflen
== 0 || data_direction
== PCI_DMA_NONE
) {
1248 cp
->Header
.SGList
= 0;
1249 cp
->Header
.SGTotal
= 0;
1253 addr64
= (u64
) pci_map_single(pdev
, buf
, buflen
, data_direction
);
1254 cp
->SG
[0].Addr
.lower
=
1255 (u32
) (addr64
& (u64
) 0x00000000FFFFFFFF);
1256 cp
->SG
[0].Addr
.upper
=
1257 (u32
) ((addr64
>> 32) & (u64
) 0x00000000FFFFFFFF);
1258 cp
->SG
[0].Len
= buflen
;
1259 cp
->Header
.SGList
= (u8
) 1; /* no. SGs contig in this cmd */
1260 cp
->Header
.SGTotal
= (u16
) 1; /* total sgs in this cmd list */
1263 static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info
*h
,
1264 struct CommandList
*c
)
1266 DECLARE_COMPLETION_ONSTACK(wait
);
1269 enqueue_cmd_and_start_io(h
, c
);
1270 wait_for_completion(&wait
);
1273 static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info
*h
,
1274 struct CommandList
*c
, int data_direction
)
1276 int retry_count
= 0;
1279 memset(c
->err_info
, 0, sizeof(c
->err_info
));
1280 hpsa_scsi_do_simple_cmd_core(h
, c
);
1282 } while (check_for_unit_attention(h
, c
) && retry_count
<= 3);
1283 hpsa_pci_unmap(h
->pdev
, c
, 1, data_direction
);
1286 static void hpsa_scsi_interpret_error(struct CommandList
*cp
)
1288 struct ErrorInfo
*ei
;
1289 struct device
*d
= &cp
->h
->pdev
->dev
;
1292 switch (ei
->CommandStatus
) {
1293 case CMD_TARGET_STATUS
:
1294 dev_warn(d
, "cmd %p has completed with errors\n", cp
);
1295 dev_warn(d
, "cmd %p has SCSI Status = %x\n", cp
,
1297 if (ei
->ScsiStatus
== 0)
1298 dev_warn(d
, "SCSI status is abnormally zero. "
1299 "(probably indicates selection timeout "
1300 "reported incorrectly due to a known "
1301 "firmware bug, circa July, 2001.)\n");
1303 case CMD_DATA_UNDERRUN
: /* let mid layer handle it. */
1304 dev_info(d
, "UNDERRUN\n");
1306 case CMD_DATA_OVERRUN
:
1307 dev_warn(d
, "cp %p has completed with data overrun\n", cp
);
1310 /* controller unfortunately reports SCSI passthru's
1311 * to non-existent targets as invalid commands.
1313 dev_warn(d
, "cp %p is reported invalid (probably means "
1314 "target device no longer present)\n", cp
);
1315 /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0);
1319 case CMD_PROTOCOL_ERR
:
1320 dev_warn(d
, "cp %p has protocol error \n", cp
);
1322 case CMD_HARDWARE_ERR
:
1323 /* cmd->result = DID_ERROR << 16; */
1324 dev_warn(d
, "cp %p had hardware error\n", cp
);
1326 case CMD_CONNECTION_LOST
:
1327 dev_warn(d
, "cp %p had connection lost\n", cp
);
1330 dev_warn(d
, "cp %p was aborted\n", cp
);
1332 case CMD_ABORT_FAILED
:
1333 dev_warn(d
, "cp %p reports abort failed\n", cp
);
1335 case CMD_UNSOLICITED_ABORT
:
1336 dev_warn(d
, "cp %p aborted due to an unsolicited abort\n", cp
);
1339 dev_warn(d
, "cp %p timed out\n", cp
);
1341 case CMD_UNABORTABLE
:
1342 dev_warn(d
, "Command unabortable\n");
1345 dev_warn(d
, "cp %p returned unknown status %x\n", cp
,
1350 static int hpsa_scsi_do_inquiry(struct ctlr_info
*h
, unsigned char *scsi3addr
,
1351 unsigned char page
, unsigned char *buf
,
1352 unsigned char bufsize
)
1355 struct CommandList
*c
;
1356 struct ErrorInfo
*ei
;
1358 c
= cmd_special_alloc(h
);
1360 if (c
== NULL
) { /* trouble... */
1361 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1365 fill_cmd(c
, HPSA_INQUIRY
, h
, buf
, bufsize
, page
, scsi3addr
, TYPE_CMD
);
1366 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_FROMDEVICE
);
1368 if (ei
->CommandStatus
!= 0 && ei
->CommandStatus
!= CMD_DATA_UNDERRUN
) {
1369 hpsa_scsi_interpret_error(c
);
1372 cmd_special_free(h
, c
);
1376 static int hpsa_send_reset(struct ctlr_info
*h
, unsigned char *scsi3addr
)
1379 struct CommandList
*c
;
1380 struct ErrorInfo
*ei
;
1382 c
= cmd_special_alloc(h
);
1384 if (c
== NULL
) { /* trouble... */
1385 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1389 fill_cmd(c
, HPSA_DEVICE_RESET_MSG
, h
, NULL
, 0, 0, scsi3addr
, TYPE_MSG
);
1390 hpsa_scsi_do_simple_cmd_core(h
, c
);
1391 /* no unmap needed here because no data xfer. */
1394 if (ei
->CommandStatus
!= 0) {
1395 hpsa_scsi_interpret_error(c
);
1398 cmd_special_free(h
, c
);
1402 static void hpsa_get_raid_level(struct ctlr_info
*h
,
1403 unsigned char *scsi3addr
, unsigned char *raid_level
)
1408 *raid_level
= RAID_UNKNOWN
;
1409 buf
= kzalloc(64, GFP_KERNEL
);
1412 rc
= hpsa_scsi_do_inquiry(h
, scsi3addr
, 0xC1, buf
, 64);
1414 *raid_level
= buf
[8];
1415 if (*raid_level
> RAID_UNKNOWN
)
1416 *raid_level
= RAID_UNKNOWN
;
1421 /* Get the device id from inquiry page 0x83 */
1422 static int hpsa_get_device_id(struct ctlr_info
*h
, unsigned char *scsi3addr
,
1423 unsigned char *device_id
, int buflen
)
1430 buf
= kzalloc(64, GFP_KERNEL
);
1433 rc
= hpsa_scsi_do_inquiry(h
, scsi3addr
, 0x83, buf
, 64);
1435 memcpy(device_id
, &buf
[8], buflen
);
1440 static int hpsa_scsi_do_report_luns(struct ctlr_info
*h
, int logical
,
1441 struct ReportLUNdata
*buf
, int bufsize
,
1442 int extended_response
)
1445 struct CommandList
*c
;
1446 unsigned char scsi3addr
[8];
1447 struct ErrorInfo
*ei
;
1449 c
= cmd_special_alloc(h
);
1450 if (c
== NULL
) { /* trouble... */
1451 dev_err(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1454 /* address the controller */
1455 memset(scsi3addr
, 0, sizeof(scsi3addr
));
1456 fill_cmd(c
, logical
? HPSA_REPORT_LOG
: HPSA_REPORT_PHYS
, h
,
1457 buf
, bufsize
, 0, scsi3addr
, TYPE_CMD
);
1458 if (extended_response
)
1459 c
->Request
.CDB
[1] = extended_response
;
1460 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_FROMDEVICE
);
1462 if (ei
->CommandStatus
!= 0 &&
1463 ei
->CommandStatus
!= CMD_DATA_UNDERRUN
) {
1464 hpsa_scsi_interpret_error(c
);
1467 cmd_special_free(h
, c
);
1471 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info
*h
,
1472 struct ReportLUNdata
*buf
,
1473 int bufsize
, int extended_response
)
1475 return hpsa_scsi_do_report_luns(h
, 0, buf
, bufsize
, extended_response
);
1478 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info
*h
,
1479 struct ReportLUNdata
*buf
, int bufsize
)
1481 return hpsa_scsi_do_report_luns(h
, 1, buf
, bufsize
, 0);
1484 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t
*device
,
1485 int bus
, int target
, int lun
)
1488 device
->target
= target
;
1492 static int hpsa_update_device_info(struct ctlr_info
*h
,
1493 unsigned char scsi3addr
[], struct hpsa_scsi_dev_t
*this_device
)
1495 #define OBDR_TAPE_INQ_SIZE 49
1496 unsigned char *inq_buff
;
1498 inq_buff
= kzalloc(OBDR_TAPE_INQ_SIZE
, GFP_KERNEL
);
1502 /* Do an inquiry to the device to see what it is. */
1503 if (hpsa_scsi_do_inquiry(h
, scsi3addr
, 0, inq_buff
,
1504 (unsigned char) OBDR_TAPE_INQ_SIZE
) != 0) {
1505 /* Inquiry failed (msg printed already) */
1506 dev_err(&h
->pdev
->dev
,
1507 "hpsa_update_device_info: inquiry failed\n");
1511 this_device
->devtype
= (inq_buff
[0] & 0x1f);
1512 memcpy(this_device
->scsi3addr
, scsi3addr
, 8);
1513 memcpy(this_device
->vendor
, &inq_buff
[8],
1514 sizeof(this_device
->vendor
));
1515 memcpy(this_device
->model
, &inq_buff
[16],
1516 sizeof(this_device
->model
));
1517 memset(this_device
->device_id
, 0,
1518 sizeof(this_device
->device_id
));
1519 hpsa_get_device_id(h
, scsi3addr
, this_device
->device_id
,
1520 sizeof(this_device
->device_id
));
1522 if (this_device
->devtype
== TYPE_DISK
&&
1523 is_logical_dev_addr_mode(scsi3addr
))
1524 hpsa_get_raid_level(h
, scsi3addr
, &this_device
->raid_level
);
1526 this_device
->raid_level
= RAID_UNKNOWN
;
1536 static unsigned char *msa2xxx_model
[] = {
1544 static int is_msa2xxx(struct ctlr_info
*h
, struct hpsa_scsi_dev_t
*device
)
1548 for (i
= 0; msa2xxx_model
[i
]; i
++)
1549 if (strncmp(device
->model
, msa2xxx_model
[i
],
1550 strlen(msa2xxx_model
[i
])) == 0)
1555 /* Helper function to assign bus, target, lun mapping of devices.
1556 * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical
1557 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
1558 * Logical drive target and lun are assigned at this time, but
1559 * physical device lun and target assignment are deferred (assigned
1560 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
1562 static void figure_bus_target_lun(struct ctlr_info
*h
,
1563 u8
*lunaddrbytes
, int *bus
, int *target
, int *lun
,
1564 struct hpsa_scsi_dev_t
*device
)
1568 if (is_logical_dev_addr_mode(lunaddrbytes
)) {
1569 /* logical device */
1570 if (unlikely(is_scsi_rev_5(h
))) {
1571 /* p1210m, logical drives lun assignments
1572 * match SCSI REPORT LUNS data.
1574 lunid
= le32_to_cpu(*((__le32
*) lunaddrbytes
));
1577 *lun
= (lunid
& 0x3fff) + 1;
1580 lunid
= le32_to_cpu(*((__le32
*) lunaddrbytes
));
1581 if (is_msa2xxx(h
, device
)) {
1582 /* msa2xxx way, put logicals on bus 1
1583 * and match target/lun numbers box
1587 *target
= (lunid
>> 16) & 0x3fff;
1588 *lun
= lunid
& 0x00ff;
1590 /* Traditional smart array way. */
1593 *target
= lunid
& 0x3fff;
1597 /* physical device */
1598 if (is_hba_lunid(lunaddrbytes
))
1599 if (unlikely(is_scsi_rev_5(h
))) {
1600 *bus
= 0; /* put p1210m ctlr at 0,0,0 */
1605 *bus
= 3; /* traditional smartarray */
1607 *bus
= 2; /* physical disk */
1609 *lun
= -1; /* we will fill these in later. */
1614 * If there is no lun 0 on a target, linux won't find any devices.
1615 * For the MSA2xxx boxes, we have to manually detect the enclosure
1616 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
1617 * it for some reason. *tmpdevice is the target we're adding,
1618 * this_device is a pointer into the current element of currentsd[]
1619 * that we're building up in update_scsi_devices(), below.
1620 * lunzerobits is a bitmap that tracks which targets already have a
1622 * Returns 1 if an enclosure was added, 0 if not.
1624 static int add_msa2xxx_enclosure_device(struct ctlr_info
*h
,
1625 struct hpsa_scsi_dev_t
*tmpdevice
,
1626 struct hpsa_scsi_dev_t
*this_device
, u8
*lunaddrbytes
,
1627 int bus
, int target
, int lun
, unsigned long lunzerobits
[],
1628 int *nmsa2xxx_enclosures
)
1630 unsigned char scsi3addr
[8];
1632 if (test_bit(target
, lunzerobits
))
1633 return 0; /* There is already a lun 0 on this target. */
1635 if (!is_logical_dev_addr_mode(lunaddrbytes
))
1636 return 0; /* It's the logical targets that may lack lun 0. */
1638 if (!is_msa2xxx(h
, tmpdevice
))
1639 return 0; /* It's only the MSA2xxx that have this problem. */
1641 if (lun
== 0) /* if lun is 0, then obviously we have a lun 0. */
1644 memset(scsi3addr
, 0, 8);
1645 scsi3addr
[3] = target
;
1646 if (is_hba_lunid(scsi3addr
))
1647 return 0; /* Don't add the RAID controller here. */
1649 if (is_scsi_rev_5(h
))
1650 return 0; /* p1210m doesn't need to do this. */
1652 #define MAX_MSA2XXX_ENCLOSURES 32
1653 if (*nmsa2xxx_enclosures
>= MAX_MSA2XXX_ENCLOSURES
) {
1654 dev_warn(&h
->pdev
->dev
, "Maximum number of MSA2XXX "
1655 "enclosures exceeded. Check your hardware "
1660 if (hpsa_update_device_info(h
, scsi3addr
, this_device
))
1662 (*nmsa2xxx_enclosures
)++;
1663 hpsa_set_bus_target_lun(this_device
, bus
, target
, 0);
1664 set_bit(target
, lunzerobits
);
1669 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
1670 * logdev. The number of luns in physdev and logdev are returned in
1671 * *nphysicals and *nlogicals, respectively.
1672 * Returns 0 on success, -1 otherwise.
1674 static int hpsa_gather_lun_info(struct ctlr_info
*h
,
1676 struct ReportLUNdata
*physdev
, u32
*nphysicals
,
1677 struct ReportLUNdata
*logdev
, u32
*nlogicals
)
1679 if (hpsa_scsi_do_report_phys_luns(h
, physdev
, reportlunsize
, 0)) {
1680 dev_err(&h
->pdev
->dev
, "report physical LUNs failed.\n");
1683 *nphysicals
= be32_to_cpu(*((__be32
*)physdev
->LUNListLength
)) / 8;
1684 if (*nphysicals
> HPSA_MAX_PHYS_LUN
) {
1685 dev_warn(&h
->pdev
->dev
, "maximum physical LUNs (%d) exceeded."
1686 " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN
,
1687 *nphysicals
- HPSA_MAX_PHYS_LUN
);
1688 *nphysicals
= HPSA_MAX_PHYS_LUN
;
1690 if (hpsa_scsi_do_report_log_luns(h
, logdev
, reportlunsize
)) {
1691 dev_err(&h
->pdev
->dev
, "report logical LUNs failed.\n");
1694 *nlogicals
= be32_to_cpu(*((__be32
*) logdev
->LUNListLength
)) / 8;
1695 /* Reject Logicals in excess of our max capability. */
1696 if (*nlogicals
> HPSA_MAX_LUN
) {
1697 dev_warn(&h
->pdev
->dev
,
1698 "maximum logical LUNs (%d) exceeded. "
1699 "%d LUNs ignored.\n", HPSA_MAX_LUN
,
1700 *nlogicals
- HPSA_MAX_LUN
);
1701 *nlogicals
= HPSA_MAX_LUN
;
1703 if (*nlogicals
+ *nphysicals
> HPSA_MAX_PHYS_LUN
) {
1704 dev_warn(&h
->pdev
->dev
,
1705 "maximum logical + physical LUNs (%d) exceeded. "
1706 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN
,
1707 *nphysicals
+ *nlogicals
- HPSA_MAX_PHYS_LUN
);
1708 *nlogicals
= HPSA_MAX_PHYS_LUN
- *nphysicals
;
1713 u8
*figure_lunaddrbytes(struct ctlr_info
*h
, int raid_ctlr_position
, int i
,
1714 int nphysicals
, int nlogicals
, struct ReportLUNdata
*physdev_list
,
1715 struct ReportLUNdata
*logdev_list
)
1717 /* Helper function, figure out where the LUN ID info is coming from
1718 * given index i, lists of physical and logical devices, where in
1719 * the list the raid controller is supposed to appear (first or last)
1722 int logicals_start
= nphysicals
+ (raid_ctlr_position
== 0);
1723 int last_device
= nphysicals
+ nlogicals
+ (raid_ctlr_position
== 0);
1725 if (i
== raid_ctlr_position
)
1726 return RAID_CTLR_LUNID
;
1728 if (i
< logicals_start
)
1729 return &physdev_list
->LUN
[i
- (raid_ctlr_position
== 0)][0];
1731 if (i
< last_device
)
1732 return &logdev_list
->LUN
[i
- nphysicals
-
1733 (raid_ctlr_position
== 0)][0];
1738 static void hpsa_update_scsi_devices(struct ctlr_info
*h
, int hostno
)
1740 /* the idea here is we could get notified
1741 * that some devices have changed, so we do a report
1742 * physical luns and report logical luns cmd, and adjust
1743 * our list of devices accordingly.
1745 * The scsi3addr's of devices won't change so long as the
1746 * adapter is not reset. That means we can rescan and
1747 * tell which devices we already know about, vs. new
1748 * devices, vs. disappearing devices.
1750 struct ReportLUNdata
*physdev_list
= NULL
;
1751 struct ReportLUNdata
*logdev_list
= NULL
;
1752 unsigned char *inq_buff
= NULL
;
1755 u32 ndev_allocated
= 0;
1756 struct hpsa_scsi_dev_t
**currentsd
, *this_device
, *tmpdevice
;
1758 int reportlunsize
= sizeof(*physdev_list
) + HPSA_MAX_PHYS_LUN
* 8;
1759 int i
, nmsa2xxx_enclosures
, ndevs_to_allocate
;
1760 int bus
, target
, lun
;
1761 int raid_ctlr_position
;
1762 DECLARE_BITMAP(lunzerobits
, HPSA_MAX_TARGETS_PER_CTLR
);
1764 currentsd
= kzalloc(sizeof(*currentsd
) * HPSA_MAX_SCSI_DEVS_PER_HBA
,
1766 physdev_list
= kzalloc(reportlunsize
, GFP_KERNEL
);
1767 logdev_list
= kzalloc(reportlunsize
, GFP_KERNEL
);
1768 inq_buff
= kmalloc(OBDR_TAPE_INQ_SIZE
, GFP_KERNEL
);
1769 tmpdevice
= kzalloc(sizeof(*tmpdevice
), GFP_KERNEL
);
1771 if (!currentsd
|| !physdev_list
|| !logdev_list
||
1772 !inq_buff
|| !tmpdevice
) {
1773 dev_err(&h
->pdev
->dev
, "out of memory\n");
1776 memset(lunzerobits
, 0, sizeof(lunzerobits
));
1778 if (hpsa_gather_lun_info(h
, reportlunsize
, physdev_list
, &nphysicals
,
1779 logdev_list
, &nlogicals
))
1782 /* We might see up to 32 MSA2xxx enclosures, actually 8 of them
1783 * but each of them 4 times through different paths. The plus 1
1784 * is for the RAID controller.
1786 ndevs_to_allocate
= nphysicals
+ nlogicals
+ MAX_MSA2XXX_ENCLOSURES
+ 1;
1788 /* Allocate the per device structures */
1789 for (i
= 0; i
< ndevs_to_allocate
; i
++) {
1790 currentsd
[i
] = kzalloc(sizeof(*currentsd
[i
]), GFP_KERNEL
);
1791 if (!currentsd
[i
]) {
1792 dev_warn(&h
->pdev
->dev
, "out of memory at %s:%d\n",
1793 __FILE__
, __LINE__
);
1799 if (unlikely(is_scsi_rev_5(h
)))
1800 raid_ctlr_position
= 0;
1802 raid_ctlr_position
= nphysicals
+ nlogicals
;
1804 /* adjust our table of devices */
1805 nmsa2xxx_enclosures
= 0;
1806 for (i
= 0; i
< nphysicals
+ nlogicals
+ 1; i
++) {
1809 /* Figure out where the LUN ID info is coming from */
1810 lunaddrbytes
= figure_lunaddrbytes(h
, raid_ctlr_position
,
1811 i
, nphysicals
, nlogicals
, physdev_list
, logdev_list
);
1812 /* skip masked physical devices. */
1813 if (lunaddrbytes
[3] & 0xC0 &&
1814 i
< nphysicals
+ (raid_ctlr_position
== 0))
1817 /* Get device type, vendor, model, device id */
1818 if (hpsa_update_device_info(h
, lunaddrbytes
, tmpdevice
))
1819 continue; /* skip it if we can't talk to it. */
1820 figure_bus_target_lun(h
, lunaddrbytes
, &bus
, &target
, &lun
,
1822 this_device
= currentsd
[ncurrent
];
1825 * For the msa2xxx boxes, we have to insert a LUN 0 which
1826 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
1827 * is nonetheless an enclosure device there. We have to
1828 * present that otherwise linux won't find anything if
1829 * there is no lun 0.
1831 if (add_msa2xxx_enclosure_device(h
, tmpdevice
, this_device
,
1832 lunaddrbytes
, bus
, target
, lun
, lunzerobits
,
1833 &nmsa2xxx_enclosures
)) {
1835 this_device
= currentsd
[ncurrent
];
1838 *this_device
= *tmpdevice
;
1839 hpsa_set_bus_target_lun(this_device
, bus
, target
, lun
);
1841 switch (this_device
->devtype
) {
1843 /* We don't *really* support actual CD-ROM devices,
1844 * just "One Button Disaster Recovery" tape drive
1845 * which temporarily pretends to be a CD-ROM drive.
1846 * So we check that the device is really an OBDR tape
1847 * device by checking for "$DR-10" in bytes 43-48 of
1851 #define OBDR_TAPE_SIG "$DR-10"
1852 strncpy(obdr_sig
, &inq_buff
[43], 6);
1854 if (strncmp(obdr_sig
, OBDR_TAPE_SIG
, 6) != 0)
1855 /* Not OBDR device, ignore it. */
1866 case TYPE_MEDIUM_CHANGER
:
1870 /* Only present the Smartarray HBA as a RAID controller.
1871 * If it's a RAID controller other than the HBA itself
1872 * (an external RAID controller, MSA500 or similar)
1875 if (!is_hba_lunid(lunaddrbytes
))
1882 if (ncurrent
>= HPSA_MAX_SCSI_DEVS_PER_HBA
)
1885 adjust_hpsa_scsi_table(h
, hostno
, currentsd
, ncurrent
);
1888 for (i
= 0; i
< ndev_allocated
; i
++)
1889 kfree(currentsd
[i
]);
1892 kfree(physdev_list
);
1896 /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
1897 * dma mapping and fills in the scatter gather entries of the
1900 static int hpsa_scatter_gather(struct ctlr_info
*h
,
1901 struct CommandList
*cp
,
1902 struct scsi_cmnd
*cmd
)
1905 struct scatterlist
*sg
;
1907 int use_sg
, i
, sg_index
, chained
;
1908 struct SGDescriptor
*curr_sg
;
1910 BUG_ON(scsi_sg_count(cmd
) > h
->maxsgentries
);
1912 use_sg
= scsi_dma_map(cmd
);
1917 goto sglist_finished
;
1922 scsi_for_each_sg(cmd
, sg
, use_sg
, i
) {
1923 if (i
== h
->max_cmd_sg_entries
- 1 &&
1924 use_sg
> h
->max_cmd_sg_entries
) {
1926 curr_sg
= h
->cmd_sg_list
[cp
->cmdindex
];
1929 addr64
= (u64
) sg_dma_address(sg
);
1930 len
= sg_dma_len(sg
);
1931 curr_sg
->Addr
.lower
= (u32
) (addr64
& 0x0FFFFFFFFULL
);
1932 curr_sg
->Addr
.upper
= (u32
) ((addr64
>> 32) & 0x0FFFFFFFFULL
);
1934 curr_sg
->Ext
= 0; /* we are not chaining */
1938 if (use_sg
+ chained
> h
->maxSG
)
1939 h
->maxSG
= use_sg
+ chained
;
1942 cp
->Header
.SGList
= h
->max_cmd_sg_entries
;
1943 cp
->Header
.SGTotal
= (u16
) (use_sg
+ 1);
1944 hpsa_map_sg_chain_block(h
, cp
);
1950 cp
->Header
.SGList
= (u8
) use_sg
; /* no. SGs contig in this cmd */
1951 cp
->Header
.SGTotal
= (u16
) use_sg
; /* total sgs in this cmd list */
1956 static int hpsa_scsi_queue_command_lck(struct scsi_cmnd
*cmd
,
1957 void (*done
)(struct scsi_cmnd
*))
1959 struct ctlr_info
*h
;
1960 struct hpsa_scsi_dev_t
*dev
;
1961 unsigned char scsi3addr
[8];
1962 struct CommandList
*c
;
1963 unsigned long flags
;
1965 /* Get the ptr to our adapter structure out of cmd->host. */
1966 h
= sdev_to_hba(cmd
->device
);
1967 dev
= cmd
->device
->hostdata
;
1969 cmd
->result
= DID_NO_CONNECT
<< 16;
1973 memcpy(scsi3addr
, dev
->scsi3addr
, sizeof(scsi3addr
));
1975 /* Need a lock as this is being allocated from the pool */
1976 spin_lock_irqsave(&h
->lock
, flags
);
1978 spin_unlock_irqrestore(&h
->lock
, flags
);
1979 if (c
== NULL
) { /* trouble... */
1980 dev_err(&h
->pdev
->dev
, "cmd_alloc returned NULL!\n");
1981 return SCSI_MLQUEUE_HOST_BUSY
;
1984 /* Fill in the command list header */
1986 cmd
->scsi_done
= done
; /* save this for use by completion code */
1988 /* save c in case we have to abort it */
1989 cmd
->host_scribble
= (unsigned char *) c
;
1991 c
->cmd_type
= CMD_SCSI
;
1993 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
1994 memcpy(&c
->Header
.LUN
.LunAddrBytes
[0], &scsi3addr
[0], 8);
1995 c
->Header
.Tag
.lower
= (c
->cmdindex
<< DIRECT_LOOKUP_SHIFT
);
1996 c
->Header
.Tag
.lower
|= DIRECT_LOOKUP_BIT
;
1998 /* Fill in the request block... */
2000 c
->Request
.Timeout
= 0;
2001 memset(c
->Request
.CDB
, 0, sizeof(c
->Request
.CDB
));
2002 BUG_ON(cmd
->cmd_len
> sizeof(c
->Request
.CDB
));
2003 c
->Request
.CDBLen
= cmd
->cmd_len
;
2004 memcpy(c
->Request
.CDB
, cmd
->cmnd
, cmd
->cmd_len
);
2005 c
->Request
.Type
.Type
= TYPE_CMD
;
2006 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2007 switch (cmd
->sc_data_direction
) {
2009 c
->Request
.Type
.Direction
= XFER_WRITE
;
2011 case DMA_FROM_DEVICE
:
2012 c
->Request
.Type
.Direction
= XFER_READ
;
2015 c
->Request
.Type
.Direction
= XFER_NONE
;
2017 case DMA_BIDIRECTIONAL
:
2018 /* This can happen if a buggy application does a scsi passthru
2019 * and sets both inlen and outlen to non-zero. ( see
2020 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
2023 c
->Request
.Type
.Direction
= XFER_RSVD
;
2024 /* This is technically wrong, and hpsa controllers should
2025 * reject it with CMD_INVALID, which is the most correct
2026 * response, but non-fibre backends appear to let it
2027 * slide by, and give the same results as if this field
2028 * were set correctly. Either way is acceptable for
2029 * our purposes here.
2035 dev_err(&h
->pdev
->dev
, "unknown data direction: %d\n",
2036 cmd
->sc_data_direction
);
2041 if (hpsa_scatter_gather(h
, c
, cmd
) < 0) { /* Fill SG list */
2043 return SCSI_MLQUEUE_HOST_BUSY
;
2045 enqueue_cmd_and_start_io(h
, c
);
2046 /* the cmd'll come back via intr handler in complete_scsi_command() */
2050 static DEF_SCSI_QCMD(hpsa_scsi_queue_command
)
2052 static void hpsa_scan_start(struct Scsi_Host
*sh
)
2054 struct ctlr_info
*h
= shost_to_hba(sh
);
2055 unsigned long flags
;
2057 /* wait until any scan already in progress is finished. */
2059 spin_lock_irqsave(&h
->scan_lock
, flags
);
2060 if (h
->scan_finished
)
2062 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2063 wait_event(h
->scan_wait_queue
, h
->scan_finished
);
2064 /* Note: We don't need to worry about a race between this
2065 * thread and driver unload because the midlayer will
2066 * have incremented the reference count, so unload won't
2067 * happen if we're in here.
2070 h
->scan_finished
= 0; /* mark scan as in progress */
2071 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2073 hpsa_update_scsi_devices(h
, h
->scsi_host
->host_no
);
2075 spin_lock_irqsave(&h
->scan_lock
, flags
);
2076 h
->scan_finished
= 1; /* mark scan as finished. */
2077 wake_up_all(&h
->scan_wait_queue
);
2078 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2081 static int hpsa_scan_finished(struct Scsi_Host
*sh
,
2082 unsigned long elapsed_time
)
2084 struct ctlr_info
*h
= shost_to_hba(sh
);
2085 unsigned long flags
;
2088 spin_lock_irqsave(&h
->scan_lock
, flags
);
2089 finished
= h
->scan_finished
;
2090 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2094 static int hpsa_change_queue_depth(struct scsi_device
*sdev
,
2095 int qdepth
, int reason
)
2097 struct ctlr_info
*h
= sdev_to_hba(sdev
);
2099 if (reason
!= SCSI_QDEPTH_DEFAULT
)
2105 if (qdepth
> h
->nr_cmds
)
2106 qdepth
= h
->nr_cmds
;
2107 scsi_adjust_queue_depth(sdev
, scsi_get_tag_type(sdev
), qdepth
);
2108 return sdev
->queue_depth
;
2111 static void hpsa_unregister_scsi(struct ctlr_info
*h
)
2113 /* we are being forcibly unloaded, and may not refuse. */
2114 scsi_remove_host(h
->scsi_host
);
2115 scsi_host_put(h
->scsi_host
);
2116 h
->scsi_host
= NULL
;
2119 static int hpsa_register_scsi(struct ctlr_info
*h
)
2123 rc
= hpsa_scsi_detect(h
);
2125 dev_err(&h
->pdev
->dev
, "hpsa_register_scsi: failed"
2126 " hpsa_scsi_detect(), rc is %d\n", rc
);
2130 static int wait_for_device_to_become_ready(struct ctlr_info
*h
,
2131 unsigned char lunaddr
[])
2135 int waittime
= 1; /* seconds */
2136 struct CommandList
*c
;
2138 c
= cmd_special_alloc(h
);
2140 dev_warn(&h
->pdev
->dev
, "out of memory in "
2141 "wait_for_device_to_become_ready.\n");
2145 /* Send test unit ready until device ready, or give up. */
2146 while (count
< HPSA_TUR_RETRY_LIMIT
) {
2148 /* Wait for a bit. do this first, because if we send
2149 * the TUR right away, the reset will just abort it.
2151 msleep(1000 * waittime
);
2154 /* Increase wait time with each try, up to a point. */
2155 if (waittime
< HPSA_MAX_WAIT_INTERVAL_SECS
)
2156 waittime
= waittime
* 2;
2158 /* Send the Test Unit Ready */
2159 fill_cmd(c
, TEST_UNIT_READY
, h
, NULL
, 0, 0, lunaddr
, TYPE_CMD
);
2160 hpsa_scsi_do_simple_cmd_core(h
, c
);
2161 /* no unmap needed here because no data xfer. */
2163 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2166 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
2167 c
->err_info
->ScsiStatus
== SAM_STAT_CHECK_CONDITION
&&
2168 (c
->err_info
->SenseInfo
[2] == NO_SENSE
||
2169 c
->err_info
->SenseInfo
[2] == UNIT_ATTENTION
))
2172 dev_warn(&h
->pdev
->dev
, "waiting %d secs "
2173 "for device to become ready.\n", waittime
);
2174 rc
= 1; /* device not ready. */
2178 dev_warn(&h
->pdev
->dev
, "giving up on device.\n");
2180 dev_warn(&h
->pdev
->dev
, "device is ready.\n");
2182 cmd_special_free(h
, c
);
2186 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
2187 * complaining. Doing a host- or bus-reset can't do anything good here.
2189 static int hpsa_eh_device_reset_handler(struct scsi_cmnd
*scsicmd
)
2192 struct ctlr_info
*h
;
2193 struct hpsa_scsi_dev_t
*dev
;
2195 /* find the controller to which the command to be aborted was sent */
2196 h
= sdev_to_hba(scsicmd
->device
);
2197 if (h
== NULL
) /* paranoia */
2199 dev
= scsicmd
->device
->hostdata
;
2201 dev_err(&h
->pdev
->dev
, "hpsa_eh_device_reset_handler: "
2202 "device lookup failed.\n");
2205 dev_warn(&h
->pdev
->dev
, "resetting device %d:%d:%d:%d\n",
2206 h
->scsi_host
->host_no
, dev
->bus
, dev
->target
, dev
->lun
);
2207 /* send a reset to the SCSI LUN which the command was sent to */
2208 rc
= hpsa_send_reset(h
, dev
->scsi3addr
);
2209 if (rc
== 0 && wait_for_device_to_become_ready(h
, dev
->scsi3addr
) == 0)
2212 dev_warn(&h
->pdev
->dev
, "resetting device failed.\n");
2217 * For operations that cannot sleep, a command block is allocated at init,
2218 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
2219 * which ones are free or in use. Lock must be held when calling this.
2220 * cmd_free() is the complement.
2222 static struct CommandList
*cmd_alloc(struct ctlr_info
*h
)
2224 struct CommandList
*c
;
2226 union u64bit temp64
;
2227 dma_addr_t cmd_dma_handle
, err_dma_handle
;
2230 i
= find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
);
2231 if (i
== h
->nr_cmds
)
2233 } while (test_and_set_bit
2234 (i
& (BITS_PER_LONG
- 1),
2235 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
)) != 0);
2236 c
= h
->cmd_pool
+ i
;
2237 memset(c
, 0, sizeof(*c
));
2238 cmd_dma_handle
= h
->cmd_pool_dhandle
2240 c
->err_info
= h
->errinfo_pool
+ i
;
2241 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
2242 err_dma_handle
= h
->errinfo_pool_dhandle
2243 + i
* sizeof(*c
->err_info
);
2248 INIT_LIST_HEAD(&c
->list
);
2249 c
->busaddr
= (u32
) cmd_dma_handle
;
2250 temp64
.val
= (u64
) err_dma_handle
;
2251 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
2252 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
2253 c
->ErrDesc
.Len
= sizeof(*c
->err_info
);
2259 /* For operations that can wait for kmalloc to possibly sleep,
2260 * this routine can be called. Lock need not be held to call
2261 * cmd_special_alloc. cmd_special_free() is the complement.
2263 static struct CommandList
*cmd_special_alloc(struct ctlr_info
*h
)
2265 struct CommandList
*c
;
2266 union u64bit temp64
;
2267 dma_addr_t cmd_dma_handle
, err_dma_handle
;
2269 c
= pci_alloc_consistent(h
->pdev
, sizeof(*c
), &cmd_dma_handle
);
2272 memset(c
, 0, sizeof(*c
));
2276 c
->err_info
= pci_alloc_consistent(h
->pdev
, sizeof(*c
->err_info
),
2279 if (c
->err_info
== NULL
) {
2280 pci_free_consistent(h
->pdev
,
2281 sizeof(*c
), c
, cmd_dma_handle
);
2284 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
2286 INIT_LIST_HEAD(&c
->list
);
2287 c
->busaddr
= (u32
) cmd_dma_handle
;
2288 temp64
.val
= (u64
) err_dma_handle
;
2289 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
2290 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
2291 c
->ErrDesc
.Len
= sizeof(*c
->err_info
);
2297 static void cmd_free(struct ctlr_info
*h
, struct CommandList
*c
)
2301 i
= c
- h
->cmd_pool
;
2302 clear_bit(i
& (BITS_PER_LONG
- 1),
2303 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
));
2307 static void cmd_special_free(struct ctlr_info
*h
, struct CommandList
*c
)
2309 union u64bit temp64
;
2311 temp64
.val32
.lower
= c
->ErrDesc
.Addr
.lower
;
2312 temp64
.val32
.upper
= c
->ErrDesc
.Addr
.upper
;
2313 pci_free_consistent(h
->pdev
, sizeof(*c
->err_info
),
2314 c
->err_info
, (dma_addr_t
) temp64
.val
);
2315 pci_free_consistent(h
->pdev
, sizeof(*c
),
2316 c
, (dma_addr_t
) (c
->busaddr
& DIRECT_LOOKUP_MASK
));
2319 #ifdef CONFIG_COMPAT
2321 static int hpsa_ioctl32_passthru(struct scsi_device
*dev
, int cmd
, void *arg
)
2323 IOCTL32_Command_struct __user
*arg32
=
2324 (IOCTL32_Command_struct __user
*) arg
;
2325 IOCTL_Command_struct arg64
;
2326 IOCTL_Command_struct __user
*p
= compat_alloc_user_space(sizeof(arg64
));
2330 memset(&arg64
, 0, sizeof(arg64
));
2332 err
|= copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
2333 sizeof(arg64
.LUN_info
));
2334 err
|= copy_from_user(&arg64
.Request
, &arg32
->Request
,
2335 sizeof(arg64
.Request
));
2336 err
|= copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
2337 sizeof(arg64
.error_info
));
2338 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
2339 err
|= get_user(cp
, &arg32
->buf
);
2340 arg64
.buf
= compat_ptr(cp
);
2341 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
2346 err
= hpsa_ioctl(dev
, CCISS_PASSTHRU
, (void *)p
);
2349 err
|= copy_in_user(&arg32
->error_info
, &p
->error_info
,
2350 sizeof(arg32
->error_info
));
2356 static int hpsa_ioctl32_big_passthru(struct scsi_device
*dev
,
2359 BIG_IOCTL32_Command_struct __user
*arg32
=
2360 (BIG_IOCTL32_Command_struct __user
*) arg
;
2361 BIG_IOCTL_Command_struct arg64
;
2362 BIG_IOCTL_Command_struct __user
*p
=
2363 compat_alloc_user_space(sizeof(arg64
));
2367 memset(&arg64
, 0, sizeof(arg64
));
2369 err
|= copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
2370 sizeof(arg64
.LUN_info
));
2371 err
|= copy_from_user(&arg64
.Request
, &arg32
->Request
,
2372 sizeof(arg64
.Request
));
2373 err
|= copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
2374 sizeof(arg64
.error_info
));
2375 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
2376 err
|= get_user(arg64
.malloc_size
, &arg32
->malloc_size
);
2377 err
|= get_user(cp
, &arg32
->buf
);
2378 arg64
.buf
= compat_ptr(cp
);
2379 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
2384 err
= hpsa_ioctl(dev
, CCISS_BIG_PASSTHRU
, (void *)p
);
2387 err
|= copy_in_user(&arg32
->error_info
, &p
->error_info
,
2388 sizeof(arg32
->error_info
));
2394 static int hpsa_compat_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
)
2397 case CCISS_GETPCIINFO
:
2398 case CCISS_GETINTINFO
:
2399 case CCISS_SETINTINFO
:
2400 case CCISS_GETNODENAME
:
2401 case CCISS_SETNODENAME
:
2402 case CCISS_GETHEARTBEAT
:
2403 case CCISS_GETBUSTYPES
:
2404 case CCISS_GETFIRMVER
:
2405 case CCISS_GETDRIVVER
:
2406 case CCISS_REVALIDVOLS
:
2407 case CCISS_DEREGDISK
:
2408 case CCISS_REGNEWDISK
:
2410 case CCISS_RESCANDISK
:
2411 case CCISS_GETLUNINFO
:
2412 return hpsa_ioctl(dev
, cmd
, arg
);
2414 case CCISS_PASSTHRU32
:
2415 return hpsa_ioctl32_passthru(dev
, cmd
, arg
);
2416 case CCISS_BIG_PASSTHRU32
:
2417 return hpsa_ioctl32_big_passthru(dev
, cmd
, arg
);
2420 return -ENOIOCTLCMD
;
2425 static int hpsa_getpciinfo_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2427 struct hpsa_pci_info pciinfo
;
2431 pciinfo
.domain
= pci_domain_nr(h
->pdev
->bus
);
2432 pciinfo
.bus
= h
->pdev
->bus
->number
;
2433 pciinfo
.dev_fn
= h
->pdev
->devfn
;
2434 pciinfo
.board_id
= h
->board_id
;
2435 if (copy_to_user(argp
, &pciinfo
, sizeof(pciinfo
)))
2440 static int hpsa_getdrivver_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2442 DriverVer_type DriverVer
;
2443 unsigned char vmaj
, vmin
, vsubmin
;
2446 rc
= sscanf(HPSA_DRIVER_VERSION
, "%hhu.%hhu.%hhu",
2447 &vmaj
, &vmin
, &vsubmin
);
2449 dev_info(&h
->pdev
->dev
, "driver version string '%s' "
2450 "unrecognized.", HPSA_DRIVER_VERSION
);
2455 DriverVer
= (vmaj
<< 16) | (vmin
<< 8) | vsubmin
;
2458 if (copy_to_user(argp
, &DriverVer
, sizeof(DriverVer_type
)))
2463 static int hpsa_passthru_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2465 IOCTL_Command_struct iocommand
;
2466 struct CommandList
*c
;
2468 union u64bit temp64
;
2472 if (!capable(CAP_SYS_RAWIO
))
2474 if (copy_from_user(&iocommand
, argp
, sizeof(iocommand
)))
2476 if ((iocommand
.buf_size
< 1) &&
2477 (iocommand
.Request
.Type
.Direction
!= XFER_NONE
)) {
2480 if (iocommand
.buf_size
> 0) {
2481 buff
= kmalloc(iocommand
.buf_size
, GFP_KERNEL
);
2484 if (iocommand
.Request
.Type
.Direction
== XFER_WRITE
) {
2485 /* Copy the data into the buffer we created */
2486 if (copy_from_user(buff
, iocommand
.buf
,
2487 iocommand
.buf_size
)) {
2492 memset(buff
, 0, iocommand
.buf_size
);
2495 c
= cmd_special_alloc(h
);
2500 /* Fill in the command type */
2501 c
->cmd_type
= CMD_IOCTL_PEND
;
2502 /* Fill in Command Header */
2503 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
2504 if (iocommand
.buf_size
> 0) { /* buffer to fill */
2505 c
->Header
.SGList
= 1;
2506 c
->Header
.SGTotal
= 1;
2507 } else { /* no buffers to fill */
2508 c
->Header
.SGList
= 0;
2509 c
->Header
.SGTotal
= 0;
2511 memcpy(&c
->Header
.LUN
, &iocommand
.LUN_info
, sizeof(c
->Header
.LUN
));
2512 /* use the kernel address the cmd block for tag */
2513 c
->Header
.Tag
.lower
= c
->busaddr
;
2515 /* Fill in Request block */
2516 memcpy(&c
->Request
, &iocommand
.Request
,
2517 sizeof(c
->Request
));
2519 /* Fill in the scatter gather information */
2520 if (iocommand
.buf_size
> 0) {
2521 temp64
.val
= pci_map_single(h
->pdev
, buff
,
2522 iocommand
.buf_size
, PCI_DMA_BIDIRECTIONAL
);
2523 c
->SG
[0].Addr
.lower
= temp64
.val32
.lower
;
2524 c
->SG
[0].Addr
.upper
= temp64
.val32
.upper
;
2525 c
->SG
[0].Len
= iocommand
.buf_size
;
2526 c
->SG
[0].Ext
= 0; /* we are not chaining*/
2528 hpsa_scsi_do_simple_cmd_core(h
, c
);
2529 hpsa_pci_unmap(h
->pdev
, c
, 1, PCI_DMA_BIDIRECTIONAL
);
2530 check_ioctl_unit_attention(h
, c
);
2532 /* Copy the error information out */
2533 memcpy(&iocommand
.error_info
, c
->err_info
,
2534 sizeof(iocommand
.error_info
));
2535 if (copy_to_user(argp
, &iocommand
, sizeof(iocommand
))) {
2537 cmd_special_free(h
, c
);
2540 if (iocommand
.Request
.Type
.Direction
== XFER_READ
&&
2541 iocommand
.buf_size
> 0) {
2542 /* Copy the data out of the buffer we created */
2543 if (copy_to_user(iocommand
.buf
, buff
, iocommand
.buf_size
)) {
2545 cmd_special_free(h
, c
);
2550 cmd_special_free(h
, c
);
2554 static int hpsa_big_passthru_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2556 BIG_IOCTL_Command_struct
*ioc
;
2557 struct CommandList
*c
;
2558 unsigned char **buff
= NULL
;
2559 int *buff_size
= NULL
;
2560 union u64bit temp64
;
2566 BYTE __user
*data_ptr
;
2570 if (!capable(CAP_SYS_RAWIO
))
2572 ioc
= (BIG_IOCTL_Command_struct
*)
2573 kmalloc(sizeof(*ioc
), GFP_KERNEL
);
2578 if (copy_from_user(ioc
, argp
, sizeof(*ioc
))) {
2582 if ((ioc
->buf_size
< 1) &&
2583 (ioc
->Request
.Type
.Direction
!= XFER_NONE
)) {
2587 /* Check kmalloc limits using all SGs */
2588 if (ioc
->malloc_size
> MAX_KMALLOC_SIZE
) {
2592 if (ioc
->buf_size
> ioc
->malloc_size
* MAXSGENTRIES
) {
2596 buff
= kzalloc(MAXSGENTRIES
* sizeof(char *), GFP_KERNEL
);
2601 buff_size
= kmalloc(MAXSGENTRIES
* sizeof(int), GFP_KERNEL
);
2606 left
= ioc
->buf_size
;
2607 data_ptr
= ioc
->buf
;
2609 sz
= (left
> ioc
->malloc_size
) ? ioc
->malloc_size
: left
;
2610 buff_size
[sg_used
] = sz
;
2611 buff
[sg_used
] = kmalloc(sz
, GFP_KERNEL
);
2612 if (buff
[sg_used
] == NULL
) {
2616 if (ioc
->Request
.Type
.Direction
== XFER_WRITE
) {
2617 if (copy_from_user(buff
[sg_used
], data_ptr
, sz
)) {
2622 memset(buff
[sg_used
], 0, sz
);
2627 c
= cmd_special_alloc(h
);
2632 c
->cmd_type
= CMD_IOCTL_PEND
;
2633 c
->Header
.ReplyQueue
= 0;
2634 c
->Header
.SGList
= c
->Header
.SGTotal
= sg_used
;
2635 memcpy(&c
->Header
.LUN
, &ioc
->LUN_info
, sizeof(c
->Header
.LUN
));
2636 c
->Header
.Tag
.lower
= c
->busaddr
;
2637 memcpy(&c
->Request
, &ioc
->Request
, sizeof(c
->Request
));
2638 if (ioc
->buf_size
> 0) {
2640 for (i
= 0; i
< sg_used
; i
++) {
2641 temp64
.val
= pci_map_single(h
->pdev
, buff
[i
],
2642 buff_size
[i
], PCI_DMA_BIDIRECTIONAL
);
2643 c
->SG
[i
].Addr
.lower
= temp64
.val32
.lower
;
2644 c
->SG
[i
].Addr
.upper
= temp64
.val32
.upper
;
2645 c
->SG
[i
].Len
= buff_size
[i
];
2646 /* we are not chaining */
2650 hpsa_scsi_do_simple_cmd_core(h
, c
);
2652 hpsa_pci_unmap(h
->pdev
, c
, sg_used
, PCI_DMA_BIDIRECTIONAL
);
2653 check_ioctl_unit_attention(h
, c
);
2654 /* Copy the error information out */
2655 memcpy(&ioc
->error_info
, c
->err_info
, sizeof(ioc
->error_info
));
2656 if (copy_to_user(argp
, ioc
, sizeof(*ioc
))) {
2657 cmd_special_free(h
, c
);
2661 if (ioc
->Request
.Type
.Direction
== XFER_READ
&& ioc
->buf_size
> 0) {
2662 /* Copy the data out of the buffer we created */
2663 BYTE __user
*ptr
= ioc
->buf
;
2664 for (i
= 0; i
< sg_used
; i
++) {
2665 if (copy_to_user(ptr
, buff
[i
], buff_size
[i
])) {
2666 cmd_special_free(h
, c
);
2670 ptr
+= buff_size
[i
];
2673 cmd_special_free(h
, c
);
2677 for (i
= 0; i
< sg_used
; i
++)
2686 static void check_ioctl_unit_attention(struct ctlr_info
*h
,
2687 struct CommandList
*c
)
2689 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
2690 c
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
)
2691 (void) check_for_unit_attention(h
, c
);
2696 static int hpsa_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
)
2698 struct ctlr_info
*h
;
2699 void __user
*argp
= (void __user
*)arg
;
2701 h
= sdev_to_hba(dev
);
2704 case CCISS_DEREGDISK
:
2705 case CCISS_REGNEWDISK
:
2707 hpsa_scan_start(h
->scsi_host
);
2709 case CCISS_GETPCIINFO
:
2710 return hpsa_getpciinfo_ioctl(h
, argp
);
2711 case CCISS_GETDRIVVER
:
2712 return hpsa_getdrivver_ioctl(h
, argp
);
2713 case CCISS_PASSTHRU
:
2714 return hpsa_passthru_ioctl(h
, argp
);
2715 case CCISS_BIG_PASSTHRU
:
2716 return hpsa_big_passthru_ioctl(h
, argp
);
2722 static void fill_cmd(struct CommandList
*c
, u8 cmd
, struct ctlr_info
*h
,
2723 void *buff
, size_t size
, u8 page_code
, unsigned char *scsi3addr
,
2726 int pci_dir
= XFER_NONE
;
2728 c
->cmd_type
= CMD_IOCTL_PEND
;
2729 c
->Header
.ReplyQueue
= 0;
2730 if (buff
!= NULL
&& size
> 0) {
2731 c
->Header
.SGList
= 1;
2732 c
->Header
.SGTotal
= 1;
2734 c
->Header
.SGList
= 0;
2735 c
->Header
.SGTotal
= 0;
2737 c
->Header
.Tag
.lower
= c
->busaddr
;
2738 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
2740 c
->Request
.Type
.Type
= cmd_type
;
2741 if (cmd_type
== TYPE_CMD
) {
2744 /* are we trying to read a vital product page */
2745 if (page_code
!= 0) {
2746 c
->Request
.CDB
[1] = 0x01;
2747 c
->Request
.CDB
[2] = page_code
;
2749 c
->Request
.CDBLen
= 6;
2750 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2751 c
->Request
.Type
.Direction
= XFER_READ
;
2752 c
->Request
.Timeout
= 0;
2753 c
->Request
.CDB
[0] = HPSA_INQUIRY
;
2754 c
->Request
.CDB
[4] = size
& 0xFF;
2756 case HPSA_REPORT_LOG
:
2757 case HPSA_REPORT_PHYS
:
2758 /* Talking to controller so It's a physical command
2759 mode = 00 target = 0. Nothing to write.
2761 c
->Request
.CDBLen
= 12;
2762 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2763 c
->Request
.Type
.Direction
= XFER_READ
;
2764 c
->Request
.Timeout
= 0;
2765 c
->Request
.CDB
[0] = cmd
;
2766 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
2767 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
2768 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
2769 c
->Request
.CDB
[9] = size
& 0xFF;
2771 case HPSA_CACHE_FLUSH
:
2772 c
->Request
.CDBLen
= 12;
2773 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2774 c
->Request
.Type
.Direction
= XFER_WRITE
;
2775 c
->Request
.Timeout
= 0;
2776 c
->Request
.CDB
[0] = BMIC_WRITE
;
2777 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
2779 case TEST_UNIT_READY
:
2780 c
->Request
.CDBLen
= 6;
2781 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2782 c
->Request
.Type
.Direction
= XFER_NONE
;
2783 c
->Request
.Timeout
= 0;
2786 dev_warn(&h
->pdev
->dev
, "unknown command 0x%c\n", cmd
);
2790 } else if (cmd_type
== TYPE_MSG
) {
2793 case HPSA_DEVICE_RESET_MSG
:
2794 c
->Request
.CDBLen
= 16;
2795 c
->Request
.Type
.Type
= 1; /* It is a MSG not a CMD */
2796 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2797 c
->Request
.Type
.Direction
= XFER_NONE
;
2798 c
->Request
.Timeout
= 0; /* Don't time out */
2799 c
->Request
.CDB
[0] = 0x01; /* RESET_MSG is 0x01 */
2800 c
->Request
.CDB
[1] = 0x03; /* Reset target above */
2801 /* If bytes 4-7 are zero, it means reset the */
2803 c
->Request
.CDB
[4] = 0x00;
2804 c
->Request
.CDB
[5] = 0x00;
2805 c
->Request
.CDB
[6] = 0x00;
2806 c
->Request
.CDB
[7] = 0x00;
2810 dev_warn(&h
->pdev
->dev
, "unknown message type %d\n",
2815 dev_warn(&h
->pdev
->dev
, "unknown command type %d\n", cmd_type
);
2819 switch (c
->Request
.Type
.Direction
) {
2821 pci_dir
= PCI_DMA_FROMDEVICE
;
2824 pci_dir
= PCI_DMA_TODEVICE
;
2827 pci_dir
= PCI_DMA_NONE
;
2830 pci_dir
= PCI_DMA_BIDIRECTIONAL
;
2833 hpsa_map_one(h
->pdev
, c
, buff
, size
, pci_dir
);
2839 * Map (physical) PCI mem into (virtual) kernel space
2841 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
2843 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
2844 ulong page_offs
= ((ulong
) base
) - page_base
;
2845 void __iomem
*page_remapped
= ioremap(page_base
, page_offs
+ size
);
2847 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
2850 /* Takes cmds off the submission queue and sends them to the hardware,
2851 * then puts them on the queue of cmds waiting for completion.
2853 static void start_io(struct ctlr_info
*h
)
2855 struct CommandList
*c
;
2857 while (!list_empty(&h
->reqQ
)) {
2858 c
= list_entry(h
->reqQ
.next
, struct CommandList
, list
);
2859 /* can't do anything if fifo is full */
2860 if ((h
->access
.fifo_full(h
))) {
2861 dev_warn(&h
->pdev
->dev
, "fifo full\n");
2865 /* Get the first entry from the Request Q */
2869 /* Tell the controller execute command */
2870 h
->access
.submit_command(h
, c
);
2872 /* Put job onto the completed Q */
2877 static inline unsigned long get_next_completion(struct ctlr_info
*h
)
2879 return h
->access
.command_completed(h
);
2882 static inline bool interrupt_pending(struct ctlr_info
*h
)
2884 return h
->access
.intr_pending(h
);
2887 static inline long interrupt_not_for_us(struct ctlr_info
*h
)
2889 return (h
->access
.intr_pending(h
) == 0) ||
2890 (h
->interrupts_enabled
== 0);
2893 static inline int bad_tag(struct ctlr_info
*h
, u32 tag_index
,
2896 if (unlikely(tag_index
>= h
->nr_cmds
)) {
2897 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
2903 static inline void finish_cmd(struct CommandList
*c
, u32 raw_tag
)
2906 if (likely(c
->cmd_type
== CMD_SCSI
))
2907 complete_scsi_command(c
, 0, raw_tag
);
2908 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
2909 complete(c
->waiting
);
2912 static inline u32
hpsa_tag_contains_index(u32 tag
)
2914 return tag
& DIRECT_LOOKUP_BIT
;
2917 static inline u32
hpsa_tag_to_index(u32 tag
)
2919 return tag
>> DIRECT_LOOKUP_SHIFT
;
2923 static inline u32
hpsa_tag_discard_error_bits(struct ctlr_info
*h
, u32 tag
)
2925 #define HPSA_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
2926 #define HPSA_SIMPLE_ERROR_BITS 0x03
2927 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
2928 return tag
& ~HPSA_SIMPLE_ERROR_BITS
;
2929 return tag
& ~HPSA_PERF_ERROR_BITS
;
2932 /* process completion of an indexed ("direct lookup") command */
2933 static inline u32
process_indexed_cmd(struct ctlr_info
*h
,
2937 struct CommandList
*c
;
2939 tag_index
= hpsa_tag_to_index(raw_tag
);
2940 if (bad_tag(h
, tag_index
, raw_tag
))
2941 return next_command(h
);
2942 c
= h
->cmd_pool
+ tag_index
;
2943 finish_cmd(c
, raw_tag
);
2944 return next_command(h
);
2947 /* process completion of a non-indexed command */
2948 static inline u32
process_nonindexed_cmd(struct ctlr_info
*h
,
2952 struct CommandList
*c
= NULL
;
2954 tag
= hpsa_tag_discard_error_bits(h
, raw_tag
);
2955 list_for_each_entry(c
, &h
->cmpQ
, list
) {
2956 if ((c
->busaddr
& 0xFFFFFFE0) == (tag
& 0xFFFFFFE0)) {
2957 finish_cmd(c
, raw_tag
);
2958 return next_command(h
);
2961 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
2962 return next_command(h
);
2965 static irqreturn_t
do_hpsa_intr_intx(int irq
, void *dev_id
)
2967 struct ctlr_info
*h
= dev_id
;
2968 unsigned long flags
;
2971 if (interrupt_not_for_us(h
))
2973 spin_lock_irqsave(&h
->lock
, flags
);
2974 while (interrupt_pending(h
)) {
2975 raw_tag
= get_next_completion(h
);
2976 while (raw_tag
!= FIFO_EMPTY
) {
2977 if (hpsa_tag_contains_index(raw_tag
))
2978 raw_tag
= process_indexed_cmd(h
, raw_tag
);
2980 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
2983 spin_unlock_irqrestore(&h
->lock
, flags
);
2987 static irqreturn_t
do_hpsa_intr_msi(int irq
, void *dev_id
)
2989 struct ctlr_info
*h
= dev_id
;
2990 unsigned long flags
;
2993 spin_lock_irqsave(&h
->lock
, flags
);
2994 raw_tag
= get_next_completion(h
);
2995 while (raw_tag
!= FIFO_EMPTY
) {
2996 if (hpsa_tag_contains_index(raw_tag
))
2997 raw_tag
= process_indexed_cmd(h
, raw_tag
);
2999 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3001 spin_unlock_irqrestore(&h
->lock
, flags
);
3005 /* Send a message CDB to the firmware. Careful, this only works
3006 * in simple mode, not performant mode due to the tag lookup.
3007 * We only ever use this immediately after a controller reset.
3009 static __devinit
int hpsa_message(struct pci_dev
*pdev
, unsigned char opcode
,
3013 struct CommandListHeader CommandHeader
;
3014 struct RequestBlock Request
;
3015 struct ErrDescriptor ErrorDescriptor
;
3017 struct Command
*cmd
;
3018 static const size_t cmd_sz
= sizeof(*cmd
) +
3019 sizeof(cmd
->ErrorDescriptor
);
3021 uint32_t paddr32
, tag
;
3022 void __iomem
*vaddr
;
3025 vaddr
= pci_ioremap_bar(pdev
, 0);
3029 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
3030 * CCISS commands, so they must be allocated from the lower 4GiB of
3033 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3039 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
3045 /* This must fit, because of the 32-bit consistent DMA mask. Also,
3046 * although there's no guarantee, we assume that the address is at
3047 * least 4-byte aligned (most likely, it's page-aligned).
3051 cmd
->CommandHeader
.ReplyQueue
= 0;
3052 cmd
->CommandHeader
.SGList
= 0;
3053 cmd
->CommandHeader
.SGTotal
= 0;
3054 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
3055 cmd
->CommandHeader
.Tag
.upper
= 0;
3056 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
3058 cmd
->Request
.CDBLen
= 16;
3059 cmd
->Request
.Type
.Type
= TYPE_MSG
;
3060 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
3061 cmd
->Request
.Type
.Direction
= XFER_NONE
;
3062 cmd
->Request
.Timeout
= 0; /* Don't time out */
3063 cmd
->Request
.CDB
[0] = opcode
;
3064 cmd
->Request
.CDB
[1] = type
;
3065 memset(&cmd
->Request
.CDB
[2], 0, 14); /* rest of the CDB is reserved */
3066 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(*cmd
);
3067 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
3068 cmd
->ErrorDescriptor
.Len
= sizeof(struct ErrorInfo
);
3070 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
3072 for (i
= 0; i
< HPSA_MSG_SEND_RETRY_LIMIT
; i
++) {
3073 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
3074 if ((tag
& ~HPSA_SIMPLE_ERROR_BITS
) == paddr32
)
3076 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS
);
3081 /* we leak the DMA buffer here ... no choice since the controller could
3082 * still complete the command.
3084 if (i
== HPSA_MSG_SEND_RETRY_LIMIT
) {
3085 dev_err(&pdev
->dev
, "controller message %02x:%02x timed out\n",
3090 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
3092 if (tag
& HPSA_ERROR_BIT
) {
3093 dev_err(&pdev
->dev
, "controller message %02x:%02x failed\n",
3098 dev_info(&pdev
->dev
, "controller message %02x:%02x succeeded\n",
3103 #define hpsa_soft_reset_controller(p) hpsa_message(p, 1, 0)
3104 #define hpsa_noop(p) hpsa_message(p, 3, 0)
3106 static int hpsa_controller_hard_reset(struct pci_dev
*pdev
,
3107 void * __iomem vaddr
, bool use_doorbell
)
3113 /* For everything after the P600, the PCI power state method
3114 * of resetting the controller doesn't work, so we have this
3115 * other way using the doorbell register.
3117 dev_info(&pdev
->dev
, "using doorbell to reset controller\n");
3118 writel(DOORBELL_CTLR_RESET
, vaddr
+ SA5_DOORBELL
);
3120 } else { /* Try to do it the PCI power state way */
3122 /* Quoting from the Open CISS Specification: "The Power
3123 * Management Control/Status Register (CSR) controls the power
3124 * state of the device. The normal operating state is D0,
3125 * CSR=00h. The software off state is D3, CSR=03h. To reset
3126 * the controller, place the interface device in D3 then to D0,
3127 * this causes a secondary PCI reset which will reset the
3130 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
3133 "hpsa_reset_controller: "
3134 "PCI PM not supported\n");
3137 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
3138 /* enter the D3hot power management state */
3139 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
3140 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
3142 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
3146 /* enter the D0 power management state */
3147 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
3149 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
3156 /* This does a hard reset of the controller using PCI power management
3157 * states or the using the doorbell register.
3159 static __devinit
int hpsa_kdump_hard_reset_controller(struct pci_dev
*pdev
)
3163 u64 cfg_base_addr_index
;
3164 void __iomem
*vaddr
;
3165 unsigned long paddr
;
3166 u32 misc_fw_support
, active_transport
;
3168 struct CfgTable __iomem
*cfgtable
;
3171 u16 command_register
;
3173 /* For controllers as old as the P600, this is very nearly
3176 * pci_save_state(pci_dev);
3177 * pci_set_power_state(pci_dev, PCI_D3hot);
3178 * pci_set_power_state(pci_dev, PCI_D0);
3179 * pci_restore_state(pci_dev);
3181 * For controllers newer than the P600, the pci power state
3182 * method of resetting doesn't work so we have another way
3183 * using the doorbell register.
3186 /* Exclude 640x boards. These are two pci devices in one slot
3187 * which share a battery backed cache module. One controls the
3188 * cache, the other accesses the cache through the one that controls
3189 * it. If we reset the one controlling the cache, the other will
3190 * likely not be happy. Just forbid resetting this conjoined mess.
3191 * The 640x isn't really supported by hpsa anyway.
3193 rc
= hpsa_lookup_board_id(pdev
, &board_id
);
3195 dev_warn(&pdev
->dev
, "Not resetting device.\n");
3198 if (board_id
== 0x409C0E11 || board_id
== 0x409D0E11)
3201 /* Save the PCI command register */
3202 pci_read_config_word(pdev
, 4, &command_register
);
3203 /* Turn the board off. This is so that later pci_restore_state()
3204 * won't turn the board on before the rest of config space is ready.
3206 pci_disable_device(pdev
);
3207 pci_save_state(pdev
);
3209 /* find the first memory BAR, so we can find the cfg table */
3210 rc
= hpsa_pci_find_memory_BAR(pdev
, &paddr
);
3213 vaddr
= remap_pci_mem(paddr
, 0x250);
3217 /* find cfgtable in order to check if reset via doorbell is supported */
3218 rc
= hpsa_find_cfg_addrs(pdev
, vaddr
, &cfg_base_addr
,
3219 &cfg_base_addr_index
, &cfg_offset
);
3222 cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
3223 cfg_base_addr_index
) + cfg_offset
, sizeof(*cfgtable
));
3229 /* If reset via doorbell register is supported, use that. */
3230 misc_fw_support
= readl(&cfgtable
->misc_fw_support
);
3231 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET
;
3233 rc
= hpsa_controller_hard_reset(pdev
, vaddr
, use_doorbell
);
3235 goto unmap_cfgtable
;
3237 pci_restore_state(pdev
);
3238 rc
= pci_enable_device(pdev
);
3240 dev_warn(&pdev
->dev
, "failed to enable device.\n");
3241 goto unmap_cfgtable
;
3243 pci_write_config_word(pdev
, 4, command_register
);
3245 /* Some devices (notably the HP Smart Array 5i Controller)
3246 need a little pause here */
3247 msleep(HPSA_POST_RESET_PAUSE_MSECS
);
3249 /* Wait for board to become not ready, then ready. */
3250 dev_info(&pdev
->dev
, "Waiting for board to become ready.\n");
3251 rc
= hpsa_wait_for_board_state(pdev
, vaddr
, BOARD_NOT_READY
);
3253 dev_warn(&pdev
->dev
,
3254 "failed waiting for board to become not ready\n");
3255 rc
= hpsa_wait_for_board_state(pdev
, vaddr
, BOARD_READY
);
3257 dev_warn(&pdev
->dev
,
3258 "failed waiting for board to become ready\n");
3259 goto unmap_cfgtable
;
3261 dev_info(&pdev
->dev
, "board ready.\n");
3263 /* Controller should be in simple mode at this point. If it's not,
3264 * It means we're on one of those controllers which doesn't support
3265 * the doorbell reset method and on which the PCI power management reset
3266 * method doesn't work (P800, for example.)
3267 * In those cases, don't try to proceed, as it generally doesn't work.
3269 active_transport
= readl(&cfgtable
->TransportActive
);
3270 if (active_transport
& PERFORMANT_MODE
) {
3271 dev_warn(&pdev
->dev
, "Unable to successfully reset controller,"
3272 " Ignoring controller.\n");
3285 * We cannot read the structure directly, for portability we must use
3287 * This is for debug only.
3289 static void print_cfg_table(struct device
*dev
, struct CfgTable
*tb
)
3295 dev_info(dev
, "Controller Configuration information\n");
3296 dev_info(dev
, "------------------------------------\n");
3297 for (i
= 0; i
< 4; i
++)
3298 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3299 temp_name
[4] = '\0';
3300 dev_info(dev
, " Signature = %s\n", temp_name
);
3301 dev_info(dev
, " Spec Number = %d\n", readl(&(tb
->SpecValence
)));
3302 dev_info(dev
, " Transport methods supported = 0x%x\n",
3303 readl(&(tb
->TransportSupport
)));
3304 dev_info(dev
, " Transport methods active = 0x%x\n",
3305 readl(&(tb
->TransportActive
)));
3306 dev_info(dev
, " Requested transport Method = 0x%x\n",
3307 readl(&(tb
->HostWrite
.TransportRequest
)));
3308 dev_info(dev
, " Coalesce Interrupt Delay = 0x%x\n",
3309 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3310 dev_info(dev
, " Coalesce Interrupt Count = 0x%x\n",
3311 readl(&(tb
->HostWrite
.CoalIntCount
)));
3312 dev_info(dev
, " Max outstanding commands = 0x%d\n",
3313 readl(&(tb
->CmdsOutMax
)));
3314 dev_info(dev
, " Bus Types = 0x%x\n", readl(&(tb
->BusTypes
)));
3315 for (i
= 0; i
< 16; i
++)
3316 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3317 temp_name
[16] = '\0';
3318 dev_info(dev
, " Server Name = %s\n", temp_name
);
3319 dev_info(dev
, " Heartbeat Counter = 0x%x\n\n\n",
3320 readl(&(tb
->HeartBeat
)));
3321 #endif /* HPSA_DEBUG */
3324 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3326 int i
, offset
, mem_type
, bar_type
;
3328 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
3331 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3332 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
3333 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
3336 mem_type
= pci_resource_flags(pdev
, i
) &
3337 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
3339 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
3340 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
3341 offset
+= 4; /* 32 bit */
3343 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
3346 default: /* reserved in PCI 2.2 */
3347 dev_warn(&pdev
->dev
,
3348 "base address is invalid\n");
3353 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
3359 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
3360 * controllers that are capable. If not, we use IO-APIC mode.
3363 static void __devinit
hpsa_interrupt_mode(struct ctlr_info
*h
)
3365 #ifdef CONFIG_PCI_MSI
3367 struct msix_entry hpsa_msix_entries
[4] = { {0, 0}, {0, 1},
3371 /* Some boards advertise MSI but don't really support it */
3372 if ((h
->board_id
== 0x40700E11) || (h
->board_id
== 0x40800E11) ||
3373 (h
->board_id
== 0x40820E11) || (h
->board_id
== 0x40830E11))
3374 goto default_int_mode
;
3375 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSIX
)) {
3376 dev_info(&h
->pdev
->dev
, "MSIX\n");
3377 err
= pci_enable_msix(h
->pdev
, hpsa_msix_entries
, 4);
3379 h
->intr
[0] = hpsa_msix_entries
[0].vector
;
3380 h
->intr
[1] = hpsa_msix_entries
[1].vector
;
3381 h
->intr
[2] = hpsa_msix_entries
[2].vector
;
3382 h
->intr
[3] = hpsa_msix_entries
[3].vector
;
3387 dev_warn(&h
->pdev
->dev
, "only %d MSI-X vectors "
3388 "available\n", err
);
3389 goto default_int_mode
;
3391 dev_warn(&h
->pdev
->dev
, "MSI-X init failed %d\n",
3393 goto default_int_mode
;
3396 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSI
)) {
3397 dev_info(&h
->pdev
->dev
, "MSI\n");
3398 if (!pci_enable_msi(h
->pdev
))
3401 dev_warn(&h
->pdev
->dev
, "MSI init failed\n");
3404 #endif /* CONFIG_PCI_MSI */
3405 /* if we get here we're going to use the default interrupt mode */
3406 h
->intr
[h
->intr_mode
] = h
->pdev
->irq
;
3409 static int __devinit
hpsa_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
)
3412 u32 subsystem_vendor_id
, subsystem_device_id
;
3414 subsystem_vendor_id
= pdev
->subsystem_vendor
;
3415 subsystem_device_id
= pdev
->subsystem_device
;
3416 *board_id
= ((subsystem_device_id
<< 16) & 0xffff0000) |
3417 subsystem_vendor_id
;
3419 for (i
= 0; i
< ARRAY_SIZE(products
); i
++)
3420 if (*board_id
== products
[i
].board_id
)
3423 if ((subsystem_vendor_id
!= PCI_VENDOR_ID_HP
&&
3424 subsystem_vendor_id
!= PCI_VENDOR_ID_COMPAQ
) ||
3426 dev_warn(&pdev
->dev
, "unrecognized board ID: "
3427 "0x%08x, ignoring.\n", *board_id
);
3430 return ARRAY_SIZE(products
) - 1; /* generic unknown smart array */
3433 static inline bool hpsa_board_disabled(struct pci_dev
*pdev
)
3437 (void) pci_read_config_word(pdev
, PCI_COMMAND
, &command
);
3438 return ((command
& PCI_COMMAND_MEMORY
) == 0);
3441 static int __devinit
hpsa_pci_find_memory_BAR(struct pci_dev
*pdev
,
3442 unsigned long *memory_bar
)
3446 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++)
3447 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
) {
3448 /* addressing mode bits already removed */
3449 *memory_bar
= pci_resource_start(pdev
, i
);
3450 dev_dbg(&pdev
->dev
, "memory BAR = %lx\n",
3454 dev_warn(&pdev
->dev
, "no memory BAR found\n");
3458 static int __devinit
hpsa_wait_for_board_state(struct pci_dev
*pdev
,
3459 void __iomem
*vaddr
, int wait_for_ready
)
3464 iterations
= HPSA_BOARD_READY_ITERATIONS
;
3466 iterations
= HPSA_BOARD_NOT_READY_ITERATIONS
;
3468 for (i
= 0; i
< iterations
; i
++) {
3469 scratchpad
= readl(vaddr
+ SA5_SCRATCHPAD_OFFSET
);
3470 if (wait_for_ready
) {
3471 if (scratchpad
== HPSA_FIRMWARE_READY
)
3474 if (scratchpad
!= HPSA_FIRMWARE_READY
)
3477 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS
);
3479 dev_warn(&pdev
->dev
, "board not ready, timed out.\n");
3483 static int __devinit
hpsa_find_cfg_addrs(struct pci_dev
*pdev
,
3484 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
3487 *cfg_base_addr
= readl(vaddr
+ SA5_CTCFG_OFFSET
);
3488 *cfg_offset
= readl(vaddr
+ SA5_CTMEM_OFFSET
);
3489 *cfg_base_addr
&= (u32
) 0x0000ffff;
3490 *cfg_base_addr_index
= find_PCI_BAR_index(pdev
, *cfg_base_addr
);
3491 if (*cfg_base_addr_index
== -1) {
3492 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index\n");
3498 static int __devinit
hpsa_find_cfgtables(struct ctlr_info
*h
)
3502 u64 cfg_base_addr_index
;
3506 rc
= hpsa_find_cfg_addrs(h
->pdev
, h
->vaddr
, &cfg_base_addr
,
3507 &cfg_base_addr_index
, &cfg_offset
);
3510 h
->cfgtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
3511 cfg_base_addr_index
) + cfg_offset
, sizeof(*h
->cfgtable
));
3514 /* Find performant mode table. */
3515 trans_offset
= readl(&h
->cfgtable
->TransMethodOffset
);
3516 h
->transtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
3517 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
3518 sizeof(*h
->transtable
));
3524 static void __devinit
hpsa_get_max_perf_mode_cmds(struct ctlr_info
*h
)
3526 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
3528 /* Limit commands in memory limited kdump scenario. */
3529 if (reset_devices
&& h
->max_commands
> 32)
3530 h
->max_commands
= 32;
3532 if (h
->max_commands
< 16) {
3533 dev_warn(&h
->pdev
->dev
, "Controller reports "
3534 "max supported commands of %d, an obvious lie. "
3535 "Using 16. Ensure that firmware is up to date.\n",
3537 h
->max_commands
= 16;
3541 /* Interrogate the hardware for some limits:
3542 * max commands, max SG elements without chaining, and with chaining,
3543 * SG chain block size, etc.
3545 static void __devinit
hpsa_find_board_params(struct ctlr_info
*h
)
3547 hpsa_get_max_perf_mode_cmds(h
);
3548 h
->nr_cmds
= h
->max_commands
- 4; /* Allow room for some ioctls */
3549 h
->maxsgentries
= readl(&(h
->cfgtable
->MaxScatterGatherElements
));
3551 * Limit in-command s/g elements to 32 save dma'able memory.
3552 * Howvever spec says if 0, use 31
3554 h
->max_cmd_sg_entries
= 31;
3555 if (h
->maxsgentries
> 512) {
3556 h
->max_cmd_sg_entries
= 32;
3557 h
->chainsize
= h
->maxsgentries
- h
->max_cmd_sg_entries
+ 1;
3558 h
->maxsgentries
--; /* save one for chain pointer */
3560 h
->maxsgentries
= 31; /* default to traditional values */
3565 static inline bool hpsa_CISS_signature_present(struct ctlr_info
*h
)
3567 if ((readb(&h
->cfgtable
->Signature
[0]) != 'C') ||
3568 (readb(&h
->cfgtable
->Signature
[1]) != 'I') ||
3569 (readb(&h
->cfgtable
->Signature
[2]) != 'S') ||
3570 (readb(&h
->cfgtable
->Signature
[3]) != 'S')) {
3571 dev_warn(&h
->pdev
->dev
, "not a valid CISS config table\n");
3577 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
3578 static inline void hpsa_enable_scsi_prefetch(struct ctlr_info
*h
)
3583 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
3585 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
3589 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
3590 * in a prefetch beyond physical memory.
3592 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info
*h
)
3596 if (h
->board_id
!= 0x3225103C)
3598 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
3599 dma_prefetch
|= 0x8000;
3600 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
3603 static void __devinit
hpsa_wait_for_mode_change_ack(struct ctlr_info
*h
)
3607 unsigned long flags
;
3609 /* under certain very rare conditions, this can take awhile.
3610 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3611 * as we enter this code.)
3613 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
3614 spin_lock_irqsave(&h
->lock
, flags
);
3615 doorbell_value
= readl(h
->vaddr
+ SA5_DOORBELL
);
3616 spin_unlock_irqrestore(&h
->lock
, flags
);
3617 if (!(doorbell_value
& CFGTBL_ChangeReq
))
3619 /* delay and try again */
3620 usleep_range(10000, 20000);
3624 static int __devinit
hpsa_enter_simple_mode(struct ctlr_info
*h
)
3628 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
3629 if (!(trans_support
& SIMPLE_MODE
))
3632 h
->max_commands
= readl(&(h
->cfgtable
->CmdsOutMax
));
3633 /* Update the field, and then ring the doorbell */
3634 writel(CFGTBL_Trans_Simple
, &(h
->cfgtable
->HostWrite
.TransportRequest
));
3635 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
3636 hpsa_wait_for_mode_change_ack(h
);
3637 print_cfg_table(&h
->pdev
->dev
, h
->cfgtable
);
3638 if (!(readl(&(h
->cfgtable
->TransportActive
)) & CFGTBL_Trans_Simple
)) {
3639 dev_warn(&h
->pdev
->dev
,
3640 "unable to get board into simple mode\n");
3643 h
->transMethod
= CFGTBL_Trans_Simple
;
3647 static int __devinit
hpsa_pci_init(struct ctlr_info
*h
)
3649 int prod_index
, err
;
3651 prod_index
= hpsa_lookup_board_id(h
->pdev
, &h
->board_id
);
3654 h
->product_name
= products
[prod_index
].product_name
;
3655 h
->access
= *(products
[prod_index
].access
);
3657 if (hpsa_board_disabled(h
->pdev
)) {
3658 dev_warn(&h
->pdev
->dev
, "controller appears to be disabled\n");
3661 err
= pci_enable_device(h
->pdev
);
3663 dev_warn(&h
->pdev
->dev
, "unable to enable PCI device\n");
3667 err
= pci_request_regions(h
->pdev
, "hpsa");
3669 dev_err(&h
->pdev
->dev
,
3670 "cannot obtain PCI resources, aborting\n");
3673 hpsa_interrupt_mode(h
);
3674 err
= hpsa_pci_find_memory_BAR(h
->pdev
, &h
->paddr
);
3676 goto err_out_free_res
;
3677 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
3680 goto err_out_free_res
;
3682 err
= hpsa_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
);
3684 goto err_out_free_res
;
3685 err
= hpsa_find_cfgtables(h
);
3687 goto err_out_free_res
;
3688 hpsa_find_board_params(h
);
3690 if (!hpsa_CISS_signature_present(h
)) {
3692 goto err_out_free_res
;
3694 hpsa_enable_scsi_prefetch(h
);
3695 hpsa_p600_dma_prefetch_quirk(h
);
3696 err
= hpsa_enter_simple_mode(h
);
3698 goto err_out_free_res
;
3703 iounmap(h
->transtable
);
3705 iounmap(h
->cfgtable
);
3709 * Deliberately omit pci_disable_device(): it does something nasty to
3710 * Smart Array controllers that pci_enable_device does not undo
3712 pci_release_regions(h
->pdev
);
3716 static void __devinit
hpsa_hba_inquiry(struct ctlr_info
*h
)
3720 #define HBA_INQUIRY_BYTE_COUNT 64
3721 h
->hba_inquiry_data
= kmalloc(HBA_INQUIRY_BYTE_COUNT
, GFP_KERNEL
);
3722 if (!h
->hba_inquiry_data
)
3724 rc
= hpsa_scsi_do_inquiry(h
, RAID_CTLR_LUNID
, 0,
3725 h
->hba_inquiry_data
, HBA_INQUIRY_BYTE_COUNT
);
3727 kfree(h
->hba_inquiry_data
);
3728 h
->hba_inquiry_data
= NULL
;
3732 static __devinit
int hpsa_init_reset_devices(struct pci_dev
*pdev
)
3739 /* Reset the controller with a PCI power-cycle or via doorbell */
3740 rc
= hpsa_kdump_hard_reset_controller(pdev
);
3742 /* -ENOTSUPP here means we cannot reset the controller
3743 * but it's already (and still) up and running in
3744 * "performant mode". Or, it might be 640x, which can't reset
3745 * due to concerns about shared bbwc between 6402/6404 pair.
3747 if (rc
== -ENOTSUPP
)
3748 return 0; /* just try to do the kdump anyhow. */
3752 /* Now try to get the controller to respond to a no-op */
3753 for (i
= 0; i
< HPSA_POST_RESET_NOOP_RETRIES
; i
++) {
3754 if (hpsa_noop(pdev
) == 0)
3757 dev_warn(&pdev
->dev
, "no-op failed%s\n",
3758 (i
< 11 ? "; re-trying" : ""));
3763 static int __devinit
hpsa_init_one(struct pci_dev
*pdev
,
3764 const struct pci_device_id
*ent
)
3767 struct ctlr_info
*h
;
3769 if (number_of_controllers
== 0)
3770 printk(KERN_INFO DRIVER_NAME
"\n");
3772 rc
= hpsa_init_reset_devices(pdev
);
3776 /* Command structures must be aligned on a 32-byte boundary because
3777 * the 5 lower bits of the address are used by the hardware. and by
3778 * the driver. See comments in hpsa.h for more info.
3780 #define COMMANDLIST_ALIGNMENT 32
3781 BUILD_BUG_ON(sizeof(struct CommandList
) % COMMANDLIST_ALIGNMENT
);
3782 h
= kzalloc(sizeof(*h
), GFP_KERNEL
);
3787 h
->busy_initializing
= 1;
3788 h
->intr_mode
= hpsa_simple_mode
? SIMPLE_MODE_INT
: PERF_MODE_INT
;
3789 INIT_LIST_HEAD(&h
->cmpQ
);
3790 INIT_LIST_HEAD(&h
->reqQ
);
3791 spin_lock_init(&h
->lock
);
3792 spin_lock_init(&h
->scan_lock
);
3793 rc
= hpsa_pci_init(h
);
3797 sprintf(h
->devname
, "hpsa%d", number_of_controllers
);
3798 h
->ctlr
= number_of_controllers
;
3799 number_of_controllers
++;
3801 /* configure PCI DMA stuff */
3802 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(64));
3806 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
3810 dev_err(&pdev
->dev
, "no suitable DMA available\n");
3815 /* make sure the board interrupts are off */
3816 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
3818 if (h
->msix_vector
|| h
->msi_vector
)
3819 rc
= request_irq(h
->intr
[h
->intr_mode
], do_hpsa_intr_msi
,
3820 IRQF_DISABLED
, h
->devname
, h
);
3822 rc
= request_irq(h
->intr
[h
->intr_mode
], do_hpsa_intr_intx
,
3823 IRQF_DISABLED
, h
->devname
, h
);
3825 dev_err(&pdev
->dev
, "unable to get irq %d for %s\n",
3826 h
->intr
[h
->intr_mode
], h
->devname
);
3830 dev_info(&pdev
->dev
, "%s: <0x%x> at IRQ %d%s using DAC\n",
3831 h
->devname
, pdev
->device
,
3832 h
->intr
[h
->intr_mode
], dac
? "" : " not");
3835 kmalloc(((h
->nr_cmds
+ BITS_PER_LONG
-
3836 1) / BITS_PER_LONG
) * sizeof(unsigned long), GFP_KERNEL
);
3837 h
->cmd_pool
= pci_alloc_consistent(h
->pdev
,
3838 h
->nr_cmds
* sizeof(*h
->cmd_pool
),
3839 &(h
->cmd_pool_dhandle
));
3840 h
->errinfo_pool
= pci_alloc_consistent(h
->pdev
,
3841 h
->nr_cmds
* sizeof(*h
->errinfo_pool
),
3842 &(h
->errinfo_pool_dhandle
));
3843 if ((h
->cmd_pool_bits
== NULL
)
3844 || (h
->cmd_pool
== NULL
)
3845 || (h
->errinfo_pool
== NULL
)) {
3846 dev_err(&pdev
->dev
, "out of memory");
3850 if (hpsa_allocate_sg_chain_blocks(h
))
3852 init_waitqueue_head(&h
->scan_wait_queue
);
3853 h
->scan_finished
= 1; /* no scan currently in progress */
3855 pci_set_drvdata(pdev
, h
);
3856 memset(h
->cmd_pool_bits
, 0,
3857 ((h
->nr_cmds
+ BITS_PER_LONG
-
3858 1) / BITS_PER_LONG
) * sizeof(unsigned long));
3862 /* Turn the interrupts on so we can service requests */
3863 h
->access
.set_intr_mask(h
, HPSA_INTR_ON
);
3865 hpsa_put_ctlr_into_performant_mode(h
);
3866 hpsa_hba_inquiry(h
);
3867 hpsa_register_scsi(h
); /* hook ourselves into SCSI subsystem */
3868 h
->busy_initializing
= 0;
3872 hpsa_free_sg_chain_blocks(h
);
3873 kfree(h
->cmd_pool_bits
);
3875 pci_free_consistent(h
->pdev
,
3876 h
->nr_cmds
* sizeof(struct CommandList
),
3877 h
->cmd_pool
, h
->cmd_pool_dhandle
);
3878 if (h
->errinfo_pool
)
3879 pci_free_consistent(h
->pdev
,
3880 h
->nr_cmds
* sizeof(struct ErrorInfo
),
3882 h
->errinfo_pool_dhandle
);
3883 free_irq(h
->intr
[h
->intr_mode
], h
);
3886 h
->busy_initializing
= 0;
3891 static void hpsa_flush_cache(struct ctlr_info
*h
)
3894 struct CommandList
*c
;
3896 flush_buf
= kzalloc(4, GFP_KERNEL
);
3900 c
= cmd_special_alloc(h
);
3902 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
3905 fill_cmd(c
, HPSA_CACHE_FLUSH
, h
, flush_buf
, 4, 0,
3906 RAID_CTLR_LUNID
, TYPE_CMD
);
3907 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_TODEVICE
);
3908 if (c
->err_info
->CommandStatus
!= 0)
3909 dev_warn(&h
->pdev
->dev
,
3910 "error flushing cache on controller\n");
3911 cmd_special_free(h
, c
);
3916 static void hpsa_shutdown(struct pci_dev
*pdev
)
3918 struct ctlr_info
*h
;
3920 h
= pci_get_drvdata(pdev
);
3921 /* Turn board interrupts off and send the flush cache command
3922 * sendcmd will turn off interrupt, and send the flush...
3923 * To write all data in the battery backed cache to disks
3925 hpsa_flush_cache(h
);
3926 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
3927 free_irq(h
->intr
[h
->intr_mode
], h
);
3928 #ifdef CONFIG_PCI_MSI
3930 pci_disable_msix(h
->pdev
);
3931 else if (h
->msi_vector
)
3932 pci_disable_msi(h
->pdev
);
3933 #endif /* CONFIG_PCI_MSI */
3936 static void __devexit
hpsa_remove_one(struct pci_dev
*pdev
)
3938 struct ctlr_info
*h
;
3940 if (pci_get_drvdata(pdev
) == NULL
) {
3941 dev_err(&pdev
->dev
, "unable to remove device \n");
3944 h
= pci_get_drvdata(pdev
);
3945 hpsa_unregister_scsi(h
); /* unhook from SCSI subsystem */
3946 hpsa_shutdown(pdev
);
3948 iounmap(h
->transtable
);
3949 iounmap(h
->cfgtable
);
3950 hpsa_free_sg_chain_blocks(h
);
3951 pci_free_consistent(h
->pdev
,
3952 h
->nr_cmds
* sizeof(struct CommandList
),
3953 h
->cmd_pool
, h
->cmd_pool_dhandle
);
3954 pci_free_consistent(h
->pdev
,
3955 h
->nr_cmds
* sizeof(struct ErrorInfo
),
3956 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
3957 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
3958 h
->reply_pool
, h
->reply_pool_dhandle
);
3959 kfree(h
->cmd_pool_bits
);
3960 kfree(h
->blockFetchTable
);
3961 kfree(h
->hba_inquiry_data
);
3963 * Deliberately omit pci_disable_device(): it does something nasty to
3964 * Smart Array controllers that pci_enable_device does not undo
3966 pci_release_regions(pdev
);
3967 pci_set_drvdata(pdev
, NULL
);
3971 static int hpsa_suspend(__attribute__((unused
)) struct pci_dev
*pdev
,
3972 __attribute__((unused
)) pm_message_t state
)
3977 static int hpsa_resume(__attribute__((unused
)) struct pci_dev
*pdev
)
3982 static struct pci_driver hpsa_pci_driver
= {
3984 .probe
= hpsa_init_one
,
3985 .remove
= __devexit_p(hpsa_remove_one
),
3986 .id_table
= hpsa_pci_device_id
, /* id_table */
3987 .shutdown
= hpsa_shutdown
,
3988 .suspend
= hpsa_suspend
,
3989 .resume
= hpsa_resume
,
3992 /* Fill in bucket_map[], given nsgs (the max number of
3993 * scatter gather elements supported) and bucket[],
3994 * which is an array of 8 integers. The bucket[] array
3995 * contains 8 different DMA transfer sizes (in 16
3996 * byte increments) which the controller uses to fetch
3997 * commands. This function fills in bucket_map[], which
3998 * maps a given number of scatter gather elements to one of
3999 * the 8 DMA transfer sizes. The point of it is to allow the
4000 * controller to only do as much DMA as needed to fetch the
4001 * command, with the DMA transfer size encoded in the lower
4002 * bits of the command address.
4004 static void calc_bucket_map(int bucket
[], int num_buckets
,
4005 int nsgs
, int *bucket_map
)
4009 /* even a command with 0 SGs requires 4 blocks */
4010 #define MINIMUM_TRANSFER_BLOCKS 4
4011 #define NUM_BUCKETS 8
4012 /* Note, bucket_map must have nsgs+1 entries. */
4013 for (i
= 0; i
<= nsgs
; i
++) {
4014 /* Compute size of a command with i SG entries */
4015 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
4016 b
= num_buckets
; /* Assume the biggest bucket */
4017 /* Find the bucket that is just big enough */
4018 for (j
= 0; j
< 8; j
++) {
4019 if (bucket
[j
] >= size
) {
4024 /* for a command with i SG entries, use bucket b. */
4029 static __devinit
void hpsa_enter_performant_mode(struct ctlr_info
*h
,
4033 unsigned long register_value
;
4035 /* This is a bit complicated. There are 8 registers on
4036 * the controller which we write to to tell it 8 different
4037 * sizes of commands which there may be. It's a way of
4038 * reducing the DMA done to fetch each command. Encoded into
4039 * each command's tag are 3 bits which communicate to the controller
4040 * which of the eight sizes that command fits within. The size of
4041 * each command depends on how many scatter gather entries there are.
4042 * Each SG entry requires 16 bytes. The eight registers are programmed
4043 * with the number of 16-byte blocks a command of that size requires.
4044 * The smallest command possible requires 5 such 16 byte blocks.
4045 * the largest command possible requires MAXSGENTRIES + 4 16-byte
4046 * blocks. Note, this only extends to the SG entries contained
4047 * within the command block, and does not extend to chained blocks
4048 * of SG elements. bft[] contains the eight values we write to
4049 * the registers. They are not evenly distributed, but have more
4050 * sizes for small commands, and fewer sizes for larger commands.
4052 int bft
[8] = {5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES
+ 4};
4053 BUILD_BUG_ON(28 > MAXSGENTRIES
+ 4);
4054 /* 5 = 1 s/g entry or 4k
4055 * 6 = 2 s/g entry or 8k
4056 * 8 = 4 s/g entry or 16k
4057 * 10 = 6 s/g entry or 24k
4060 h
->reply_pool_wraparound
= 1; /* spec: init to 1 */
4062 /* Controller spec: zero out this buffer. */
4063 memset(h
->reply_pool
, 0, h
->reply_pool_size
);
4064 h
->reply_pool_head
= h
->reply_pool
;
4066 bft
[7] = h
->max_sg_entries
+ 4;
4067 calc_bucket_map(bft
, ARRAY_SIZE(bft
), 32, h
->blockFetchTable
);
4068 for (i
= 0; i
< 8; i
++)
4069 writel(bft
[i
], &h
->transtable
->BlockFetch
[i
]);
4071 /* size of controller ring buffer */
4072 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
4073 writel(1, &h
->transtable
->RepQCount
);
4074 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
4075 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
4076 writel(h
->reply_pool_dhandle
, &h
->transtable
->RepQAddr0Low32
);
4077 writel(0, &h
->transtable
->RepQAddr0High32
);
4078 writel(CFGTBL_Trans_Performant
| use_short_tags
,
4079 &(h
->cfgtable
->HostWrite
.TransportRequest
));
4080 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
4081 hpsa_wait_for_mode_change_ack(h
);
4082 register_value
= readl(&(h
->cfgtable
->TransportActive
));
4083 if (!(register_value
& CFGTBL_Trans_Performant
)) {
4084 dev_warn(&h
->pdev
->dev
, "unable to get board into"
4085 " performant mode\n");
4088 /* Change the access methods to the performant access methods */
4089 h
->access
= SA5_performant_access
;
4090 h
->transMethod
= CFGTBL_Trans_Performant
;
4093 static __devinit
void hpsa_put_ctlr_into_performant_mode(struct ctlr_info
*h
)
4097 if (hpsa_simple_mode
)
4100 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
4101 if (!(trans_support
& PERFORMANT_MODE
))
4104 hpsa_get_max_perf_mode_cmds(h
);
4105 h
->max_sg_entries
= 32;
4106 /* Performant mode ring buffer and supporting data structures */
4107 h
->reply_pool_size
= h
->max_commands
* sizeof(u64
);
4108 h
->reply_pool
= pci_alloc_consistent(h
->pdev
, h
->reply_pool_size
,
4109 &(h
->reply_pool_dhandle
));
4111 /* Need a block fetch table for performant mode */
4112 h
->blockFetchTable
= kmalloc(((h
->max_sg_entries
+1) *
4113 sizeof(u32
)), GFP_KERNEL
);
4115 if ((h
->reply_pool
== NULL
)
4116 || (h
->blockFetchTable
== NULL
))
4119 hpsa_enter_performant_mode(h
,
4120 trans_support
& CFGTBL_Trans_use_short_tags
);
4126 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
4127 h
->reply_pool
, h
->reply_pool_dhandle
);
4128 kfree(h
->blockFetchTable
);
4132 * This is it. Register the PCI driver information for the cards we control
4133 * the OS will call our registered routines when it finds one of our cards.
4135 static int __init
hpsa_init(void)
4137 return pci_register_driver(&hpsa_pci_driver
);
4140 static void __exit
hpsa_cleanup(void)
4142 pci_unregister_driver(&hpsa_pci_driver
);
4145 module_init(hpsa_init
);
4146 module_exit(hpsa_cleanup
);