2 * Disk Array driver for HP Smart Array SAS controllers
3 * Copyright 2000, 2009 Hewlett-Packard Development Company, L.P.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
12 * NON INFRINGEMENT. See the GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
22 #include <linux/module.h>
23 #include <linux/interrupt.h>
24 #include <linux/types.h>
25 #include <linux/pci.h>
26 #include <linux/pci-aspm.h>
27 #include <linux/kernel.h>
28 #include <linux/slab.h>
29 #include <linux/delay.h>
31 #include <linux/timer.h>
32 #include <linux/seq_file.h>
33 #include <linux/init.h>
34 #include <linux/spinlock.h>
35 #include <linux/compat.h>
36 #include <linux/blktrace_api.h>
37 #include <linux/uaccess.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/completion.h>
41 #include <linux/moduleparam.h>
42 #include <scsi/scsi.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <scsi/scsi_device.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_tcq.h>
47 #include <linux/cciss_ioctl.h>
48 #include <linux/string.h>
49 #include <linux/bitmap.h>
50 #include <linux/atomic.h>
51 #include <linux/kthread.h>
52 #include <linux/jiffies.h>
56 /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */
57 #define HPSA_DRIVER_VERSION "2.0.2-1"
58 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
61 /* How long to wait (in milliseconds) for board to go into simple mode */
62 #define MAX_CONFIG_WAIT 30000
63 #define MAX_IOCTL_CONFIG_WAIT 1000
65 /*define how many times we will try a command because of bus resets */
66 #define MAX_CMD_RETRIES 3
68 /* Embedded module documentation macros - see modules.h */
69 MODULE_AUTHOR("Hewlett-Packard Company");
70 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
72 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
73 MODULE_VERSION(HPSA_DRIVER_VERSION
);
74 MODULE_LICENSE("GPL");
76 static int hpsa_allow_any
;
77 module_param(hpsa_allow_any
, int, S_IRUGO
|S_IWUSR
);
78 MODULE_PARM_DESC(hpsa_allow_any
,
79 "Allow hpsa driver to access unknown HP Smart Array hardware");
80 static int hpsa_simple_mode
;
81 module_param(hpsa_simple_mode
, int, S_IRUGO
|S_IWUSR
);
82 MODULE_PARM_DESC(hpsa_simple_mode
,
83 "Use 'simple mode' rather than 'performant mode'");
85 /* define the PCI info for the cards we can control */
86 static const struct pci_device_id hpsa_pci_device_id
[] = {
87 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3241},
88 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3243},
89 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3245},
90 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3247},
91 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3249},
92 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x324a},
93 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x324b},
94 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3233},
95 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3350},
96 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3351},
97 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3352},
98 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3353},
99 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3354},
100 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3355},
101 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x3356},
102 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSH
, 0x103C, 0x1920},
103 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSH
, 0x103C, 0x1921},
104 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSH
, 0x103C, 0x1922},
105 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSH
, 0x103C, 0x1923},
106 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSH
, 0x103C, 0x1924},
107 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSH
, 0x103C, 0x1925},
108 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSH
, 0x103C, 0x1926},
109 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSH
, 0x103C, 0x1928},
110 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSF
, 0x103C, 0x334d},
111 {PCI_VENDOR_ID_HP
, PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
,
112 PCI_CLASS_STORAGE_RAID
<< 8, 0xffff << 8, 0},
116 MODULE_DEVICE_TABLE(pci
, hpsa_pci_device_id
);
118 /* board_id = Subsystem Device ID & Vendor ID
119 * product = Marketing Name for the board
120 * access = Address of the struct of function pointers
122 static struct board_type products
[] = {
123 {0x3241103C, "Smart Array P212", &SA5_access
},
124 {0x3243103C, "Smart Array P410", &SA5_access
},
125 {0x3245103C, "Smart Array P410i", &SA5_access
},
126 {0x3247103C, "Smart Array P411", &SA5_access
},
127 {0x3249103C, "Smart Array P812", &SA5_access
},
128 {0x324a103C, "Smart Array P712m", &SA5_access
},
129 {0x324b103C, "Smart Array P711m", &SA5_access
},
130 {0x3350103C, "Smart Array P222", &SA5_access
},
131 {0x3351103C, "Smart Array P420", &SA5_access
},
132 {0x3352103C, "Smart Array P421", &SA5_access
},
133 {0x3353103C, "Smart Array P822", &SA5_access
},
134 {0x3354103C, "Smart Array P420i", &SA5_access
},
135 {0x3355103C, "Smart Array P220i", &SA5_access
},
136 {0x3356103C, "Smart Array P721m", &SA5_access
},
137 {0x1920103C, "Smart Array", &SA5_access
},
138 {0x1921103C, "Smart Array", &SA5_access
},
139 {0x1922103C, "Smart Array", &SA5_access
},
140 {0x1923103C, "Smart Array", &SA5_access
},
141 {0x1924103C, "Smart Array", &SA5_access
},
142 {0x1925103C, "Smart Array", &SA5_access
},
143 {0x1926103C, "Smart Array", &SA5_access
},
144 {0x1928103C, "Smart Array", &SA5_access
},
145 {0x334d103C, "Smart Array P822se", &SA5_access
},
146 {0xFFFF103C, "Unknown Smart Array", &SA5_access
},
149 static int number_of_controllers
;
151 static struct list_head hpsa_ctlr_list
= LIST_HEAD_INIT(hpsa_ctlr_list
);
152 static spinlock_t lockup_detector_lock
;
153 static struct task_struct
*hpsa_lockup_detector
;
155 static irqreturn_t
do_hpsa_intr_intx(int irq
, void *dev_id
);
156 static irqreturn_t
do_hpsa_intr_msi(int irq
, void *dev_id
);
157 static int hpsa_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
);
158 static void start_io(struct ctlr_info
*h
);
161 static int hpsa_compat_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
);
164 static void cmd_free(struct ctlr_info
*h
, struct CommandList
*c
);
165 static void cmd_special_free(struct ctlr_info
*h
, struct CommandList
*c
);
166 static struct CommandList
*cmd_alloc(struct ctlr_info
*h
);
167 static struct CommandList
*cmd_special_alloc(struct ctlr_info
*h
);
168 static void fill_cmd(struct CommandList
*c
, u8 cmd
, struct ctlr_info
*h
,
169 void *buff
, size_t size
, u8 page_code
, unsigned char *scsi3addr
,
172 static int hpsa_scsi_queue_command(struct Scsi_Host
*h
, struct scsi_cmnd
*cmd
);
173 static void hpsa_scan_start(struct Scsi_Host
*);
174 static int hpsa_scan_finished(struct Scsi_Host
*sh
,
175 unsigned long elapsed_time
);
176 static int hpsa_change_queue_depth(struct scsi_device
*sdev
,
177 int qdepth
, int reason
);
179 static int hpsa_eh_device_reset_handler(struct scsi_cmnd
*scsicmd
);
180 static int hpsa_eh_abort_handler(struct scsi_cmnd
*scsicmd
);
181 static int hpsa_slave_alloc(struct scsi_device
*sdev
);
182 static void hpsa_slave_destroy(struct scsi_device
*sdev
);
184 static void hpsa_update_scsi_devices(struct ctlr_info
*h
, int hostno
);
185 static int check_for_unit_attention(struct ctlr_info
*h
,
186 struct CommandList
*c
);
187 static void check_ioctl_unit_attention(struct ctlr_info
*h
,
188 struct CommandList
*c
);
189 /* performant mode helper functions */
190 static void calc_bucket_map(int *bucket
, int num_buckets
,
191 int nsgs
, int *bucket_map
);
192 static __devinit
void hpsa_put_ctlr_into_performant_mode(struct ctlr_info
*h
);
193 static inline u32
next_command(struct ctlr_info
*h
, u8 q
);
194 static int __devinit
hpsa_find_cfg_addrs(struct pci_dev
*pdev
,
195 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
197 static int __devinit
hpsa_pci_find_memory_BAR(struct pci_dev
*pdev
,
198 unsigned long *memory_bar
);
199 static int __devinit
hpsa_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
);
200 static int __devinit
hpsa_wait_for_board_state(struct pci_dev
*pdev
,
201 void __iomem
*vaddr
, int wait_for_ready
);
202 static inline void finish_cmd(struct CommandList
*c
);
203 #define BOARD_NOT_READY 0
204 #define BOARD_READY 1
206 static inline struct ctlr_info
*sdev_to_hba(struct scsi_device
*sdev
)
208 unsigned long *priv
= shost_priv(sdev
->host
);
209 return (struct ctlr_info
*) *priv
;
212 static inline struct ctlr_info
*shost_to_hba(struct Scsi_Host
*sh
)
214 unsigned long *priv
= shost_priv(sh
);
215 return (struct ctlr_info
*) *priv
;
218 static int check_for_unit_attention(struct ctlr_info
*h
,
219 struct CommandList
*c
)
221 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
224 switch (c
->err_info
->SenseInfo
[12]) {
226 dev_warn(&h
->pdev
->dev
, HPSA
"%d: a state change "
227 "detected, command retried\n", h
->ctlr
);
230 dev_warn(&h
->pdev
->dev
, HPSA
"%d: LUN failure "
231 "detected, action required\n", h
->ctlr
);
233 case REPORT_LUNS_CHANGED
:
234 dev_warn(&h
->pdev
->dev
, HPSA
"%d: report LUN data "
235 "changed, action required\n", h
->ctlr
);
237 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
238 * target (array) devices.
242 dev_warn(&h
->pdev
->dev
, HPSA
"%d: a power on "
243 "or device reset detected\n", h
->ctlr
);
245 case UNIT_ATTENTION_CLEARED
:
246 dev_warn(&h
->pdev
->dev
, HPSA
"%d: unit attention "
247 "cleared by another initiator\n", h
->ctlr
);
250 dev_warn(&h
->pdev
->dev
, HPSA
"%d: unknown "
251 "unit attention detected\n", h
->ctlr
);
257 static int check_for_busy(struct ctlr_info
*h
, struct CommandList
*c
)
259 if (c
->err_info
->CommandStatus
!= CMD_TARGET_STATUS
||
260 (c
->err_info
->ScsiStatus
!= SAM_STAT_BUSY
&&
261 c
->err_info
->ScsiStatus
!= SAM_STAT_TASK_SET_FULL
))
263 dev_warn(&h
->pdev
->dev
, HPSA
"device busy");
267 static ssize_t
host_store_rescan(struct device
*dev
,
268 struct device_attribute
*attr
,
269 const char *buf
, size_t count
)
272 struct Scsi_Host
*shost
= class_to_shost(dev
);
273 h
= shost_to_hba(shost
);
274 hpsa_scan_start(h
->scsi_host
);
278 static ssize_t
host_show_firmware_revision(struct device
*dev
,
279 struct device_attribute
*attr
, char *buf
)
282 struct Scsi_Host
*shost
= class_to_shost(dev
);
283 unsigned char *fwrev
;
285 h
= shost_to_hba(shost
);
286 if (!h
->hba_inquiry_data
)
288 fwrev
= &h
->hba_inquiry_data
[32];
289 return snprintf(buf
, 20, "%c%c%c%c\n",
290 fwrev
[0], fwrev
[1], fwrev
[2], fwrev
[3]);
293 static ssize_t
host_show_commands_outstanding(struct device
*dev
,
294 struct device_attribute
*attr
, char *buf
)
296 struct Scsi_Host
*shost
= class_to_shost(dev
);
297 struct ctlr_info
*h
= shost_to_hba(shost
);
299 return snprintf(buf
, 20, "%d\n", h
->commands_outstanding
);
302 static ssize_t
host_show_transport_mode(struct device
*dev
,
303 struct device_attribute
*attr
, char *buf
)
306 struct Scsi_Host
*shost
= class_to_shost(dev
);
308 h
= shost_to_hba(shost
);
309 return snprintf(buf
, 20, "%s\n",
310 h
->transMethod
& CFGTBL_Trans_Performant
?
311 "performant" : "simple");
314 /* List of controllers which cannot be hard reset on kexec with reset_devices */
315 static u32 unresettable_controller
[] = {
316 0x324a103C, /* Smart Array P712m */
317 0x324b103C, /* SmartArray P711m */
318 0x3223103C, /* Smart Array P800 */
319 0x3234103C, /* Smart Array P400 */
320 0x3235103C, /* Smart Array P400i */
321 0x3211103C, /* Smart Array E200i */
322 0x3212103C, /* Smart Array E200 */
323 0x3213103C, /* Smart Array E200i */
324 0x3214103C, /* Smart Array E200i */
325 0x3215103C, /* Smart Array E200i */
326 0x3237103C, /* Smart Array E500 */
327 0x323D103C, /* Smart Array P700m */
328 0x40800E11, /* Smart Array 5i */
329 0x409C0E11, /* Smart Array 6400 */
330 0x409D0E11, /* Smart Array 6400 EM */
331 0x40700E11, /* Smart Array 5300 */
332 0x40820E11, /* Smart Array 532 */
333 0x40830E11, /* Smart Array 5312 */
334 0x409A0E11, /* Smart Array 641 */
335 0x409B0E11, /* Smart Array 642 */
336 0x40910E11, /* Smart Array 6i */
339 /* List of controllers which cannot even be soft reset */
340 static u32 soft_unresettable_controller
[] = {
341 0x40800E11, /* Smart Array 5i */
342 0x40700E11, /* Smart Array 5300 */
343 0x40820E11, /* Smart Array 532 */
344 0x40830E11, /* Smart Array 5312 */
345 0x409A0E11, /* Smart Array 641 */
346 0x409B0E11, /* Smart Array 642 */
347 0x40910E11, /* Smart Array 6i */
348 /* Exclude 640x boards. These are two pci devices in one slot
349 * which share a battery backed cache module. One controls the
350 * cache, the other accesses the cache through the one that controls
351 * it. If we reset the one controlling the cache, the other will
352 * likely not be happy. Just forbid resetting this conjoined mess.
353 * The 640x isn't really supported by hpsa anyway.
355 0x409C0E11, /* Smart Array 6400 */
356 0x409D0E11, /* Smart Array 6400 EM */
359 static int ctlr_is_hard_resettable(u32 board_id
)
363 for (i
= 0; i
< ARRAY_SIZE(unresettable_controller
); i
++)
364 if (unresettable_controller
[i
] == board_id
)
369 static int ctlr_is_soft_resettable(u32 board_id
)
373 for (i
= 0; i
< ARRAY_SIZE(soft_unresettable_controller
); i
++)
374 if (soft_unresettable_controller
[i
] == board_id
)
379 static int ctlr_is_resettable(u32 board_id
)
381 return ctlr_is_hard_resettable(board_id
) ||
382 ctlr_is_soft_resettable(board_id
);
385 static ssize_t
host_show_resettable(struct device
*dev
,
386 struct device_attribute
*attr
, char *buf
)
389 struct Scsi_Host
*shost
= class_to_shost(dev
);
391 h
= shost_to_hba(shost
);
392 return snprintf(buf
, 20, "%d\n", ctlr_is_resettable(h
->board_id
));
395 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr
[])
397 return (scsi3addr
[3] & 0xC0) == 0x40;
400 static const char *raid_label
[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
403 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
405 static ssize_t
raid_level_show(struct device
*dev
,
406 struct device_attribute
*attr
, char *buf
)
409 unsigned char rlevel
;
411 struct scsi_device
*sdev
;
412 struct hpsa_scsi_dev_t
*hdev
;
415 sdev
= to_scsi_device(dev
);
416 h
= sdev_to_hba(sdev
);
417 spin_lock_irqsave(&h
->lock
, flags
);
418 hdev
= sdev
->hostdata
;
420 spin_unlock_irqrestore(&h
->lock
, flags
);
424 /* Is this even a logical drive? */
425 if (!is_logical_dev_addr_mode(hdev
->scsi3addr
)) {
426 spin_unlock_irqrestore(&h
->lock
, flags
);
427 l
= snprintf(buf
, PAGE_SIZE
, "N/A\n");
431 rlevel
= hdev
->raid_level
;
432 spin_unlock_irqrestore(&h
->lock
, flags
);
433 if (rlevel
> RAID_UNKNOWN
)
434 rlevel
= RAID_UNKNOWN
;
435 l
= snprintf(buf
, PAGE_SIZE
, "RAID %s\n", raid_label
[rlevel
]);
439 static ssize_t
lunid_show(struct device
*dev
,
440 struct device_attribute
*attr
, char *buf
)
443 struct scsi_device
*sdev
;
444 struct hpsa_scsi_dev_t
*hdev
;
446 unsigned char lunid
[8];
448 sdev
= to_scsi_device(dev
);
449 h
= sdev_to_hba(sdev
);
450 spin_lock_irqsave(&h
->lock
, flags
);
451 hdev
= sdev
->hostdata
;
453 spin_unlock_irqrestore(&h
->lock
, flags
);
456 memcpy(lunid
, hdev
->scsi3addr
, sizeof(lunid
));
457 spin_unlock_irqrestore(&h
->lock
, flags
);
458 return snprintf(buf
, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
459 lunid
[0], lunid
[1], lunid
[2], lunid
[3],
460 lunid
[4], lunid
[5], lunid
[6], lunid
[7]);
463 static ssize_t
unique_id_show(struct device
*dev
,
464 struct device_attribute
*attr
, char *buf
)
467 struct scsi_device
*sdev
;
468 struct hpsa_scsi_dev_t
*hdev
;
470 unsigned char sn
[16];
472 sdev
= to_scsi_device(dev
);
473 h
= sdev_to_hba(sdev
);
474 spin_lock_irqsave(&h
->lock
, flags
);
475 hdev
= sdev
->hostdata
;
477 spin_unlock_irqrestore(&h
->lock
, flags
);
480 memcpy(sn
, hdev
->device_id
, sizeof(sn
));
481 spin_unlock_irqrestore(&h
->lock
, flags
);
482 return snprintf(buf
, 16 * 2 + 2,
483 "%02X%02X%02X%02X%02X%02X%02X%02X"
484 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
485 sn
[0], sn
[1], sn
[2], sn
[3],
486 sn
[4], sn
[5], sn
[6], sn
[7],
487 sn
[8], sn
[9], sn
[10], sn
[11],
488 sn
[12], sn
[13], sn
[14], sn
[15]);
491 static DEVICE_ATTR(raid_level
, S_IRUGO
, raid_level_show
, NULL
);
492 static DEVICE_ATTR(lunid
, S_IRUGO
, lunid_show
, NULL
);
493 static DEVICE_ATTR(unique_id
, S_IRUGO
, unique_id_show
, NULL
);
494 static DEVICE_ATTR(rescan
, S_IWUSR
, NULL
, host_store_rescan
);
495 static DEVICE_ATTR(firmware_revision
, S_IRUGO
,
496 host_show_firmware_revision
, NULL
);
497 static DEVICE_ATTR(commands_outstanding
, S_IRUGO
,
498 host_show_commands_outstanding
, NULL
);
499 static DEVICE_ATTR(transport_mode
, S_IRUGO
,
500 host_show_transport_mode
, NULL
);
501 static DEVICE_ATTR(resettable
, S_IRUGO
,
502 host_show_resettable
, NULL
);
504 static struct device_attribute
*hpsa_sdev_attrs
[] = {
505 &dev_attr_raid_level
,
511 static struct device_attribute
*hpsa_shost_attrs
[] = {
513 &dev_attr_firmware_revision
,
514 &dev_attr_commands_outstanding
,
515 &dev_attr_transport_mode
,
516 &dev_attr_resettable
,
520 static struct scsi_host_template hpsa_driver_template
= {
521 .module
= THIS_MODULE
,
524 .queuecommand
= hpsa_scsi_queue_command
,
525 .scan_start
= hpsa_scan_start
,
526 .scan_finished
= hpsa_scan_finished
,
527 .change_queue_depth
= hpsa_change_queue_depth
,
529 .use_clustering
= ENABLE_CLUSTERING
,
530 .eh_abort_handler
= hpsa_eh_abort_handler
,
531 .eh_device_reset_handler
= hpsa_eh_device_reset_handler
,
533 .slave_alloc
= hpsa_slave_alloc
,
534 .slave_destroy
= hpsa_slave_destroy
,
536 .compat_ioctl
= hpsa_compat_ioctl
,
538 .sdev_attrs
= hpsa_sdev_attrs
,
539 .shost_attrs
= hpsa_shost_attrs
,
544 /* Enqueuing and dequeuing functions for cmdlists. */
545 static inline void addQ(struct list_head
*list
, struct CommandList
*c
)
547 list_add_tail(&c
->list
, list
);
550 static inline u32
next_command(struct ctlr_info
*h
, u8 q
)
553 struct reply_pool
*rq
= &h
->reply_queue
[q
];
556 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
557 return h
->access
.command_completed(h
, q
);
559 if ((rq
->head
[rq
->current_entry
] & 1) == rq
->wraparound
) {
560 a
= rq
->head
[rq
->current_entry
];
562 spin_lock_irqsave(&h
->lock
, flags
);
563 h
->commands_outstanding
--;
564 spin_unlock_irqrestore(&h
->lock
, flags
);
568 /* Check for wraparound */
569 if (rq
->current_entry
== h
->max_commands
) {
570 rq
->current_entry
= 0;
576 /* set_performant_mode: Modify the tag for cciss performant
577 * set bit 0 for pull model, bits 3-1 for block fetch
580 static void set_performant_mode(struct ctlr_info
*h
, struct CommandList
*c
)
582 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
)) {
583 c
->busaddr
|= 1 | (h
->blockFetchTable
[c
->Header
.SGList
] << 1);
584 if (likely(h
->msix_vector
))
585 c
->Header
.ReplyQueue
=
586 smp_processor_id() % h
->nreply_queues
;
590 static int is_firmware_flash_cmd(u8
*cdb
)
592 return cdb
[0] == BMIC_WRITE
&& cdb
[6] == BMIC_FLASH_FIRMWARE
;
596 * During firmware flash, the heartbeat register may not update as frequently
597 * as it should. So we dial down lockup detection during firmware flash. and
598 * dial it back up when firmware flash completes.
600 #define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ)
601 #define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ)
602 static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info
*h
,
603 struct CommandList
*c
)
605 if (!is_firmware_flash_cmd(c
->Request
.CDB
))
607 atomic_inc(&h
->firmware_flash_in_progress
);
608 h
->heartbeat_sample_interval
= HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH
;
611 static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info
*h
,
612 struct CommandList
*c
)
614 if (is_firmware_flash_cmd(c
->Request
.CDB
) &&
615 atomic_dec_and_test(&h
->firmware_flash_in_progress
))
616 h
->heartbeat_sample_interval
= HEARTBEAT_SAMPLE_INTERVAL
;
619 static void enqueue_cmd_and_start_io(struct ctlr_info
*h
,
620 struct CommandList
*c
)
624 set_performant_mode(h
, c
);
625 dial_down_lockup_detection_during_fw_flash(h
, c
);
626 spin_lock_irqsave(&h
->lock
, flags
);
629 spin_unlock_irqrestore(&h
->lock
, flags
);
633 static inline void removeQ(struct CommandList
*c
)
635 if (WARN_ON(list_empty(&c
->list
)))
637 list_del_init(&c
->list
);
640 static inline int is_hba_lunid(unsigned char scsi3addr
[])
642 return memcmp(scsi3addr
, RAID_CTLR_LUNID
, 8) == 0;
645 static inline int is_scsi_rev_5(struct ctlr_info
*h
)
647 if (!h
->hba_inquiry_data
)
649 if ((h
->hba_inquiry_data
[2] & 0x07) == 5)
654 static int hpsa_find_target_lun(struct ctlr_info
*h
,
655 unsigned char scsi3addr
[], int bus
, int *target
, int *lun
)
657 /* finds an unused bus, target, lun for a new physical device
658 * assumes h->devlock is held
661 DECLARE_BITMAP(lun_taken
, HPSA_MAX_DEVICES
);
663 bitmap_zero(lun_taken
, HPSA_MAX_DEVICES
);
665 for (i
= 0; i
< h
->ndevices
; i
++) {
666 if (h
->dev
[i
]->bus
== bus
&& h
->dev
[i
]->target
!= -1)
667 __set_bit(h
->dev
[i
]->target
, lun_taken
);
670 i
= find_first_zero_bit(lun_taken
, HPSA_MAX_DEVICES
);
671 if (i
< HPSA_MAX_DEVICES
) {
680 /* Add an entry into h->dev[] array. */
681 static int hpsa_scsi_add_entry(struct ctlr_info
*h
, int hostno
,
682 struct hpsa_scsi_dev_t
*device
,
683 struct hpsa_scsi_dev_t
*added
[], int *nadded
)
685 /* assumes h->devlock is held */
688 unsigned char addr1
[8], addr2
[8];
689 struct hpsa_scsi_dev_t
*sd
;
691 if (n
>= HPSA_MAX_DEVICES
) {
692 dev_err(&h
->pdev
->dev
, "too many devices, some will be "
697 /* physical devices do not have lun or target assigned until now. */
698 if (device
->lun
!= -1)
699 /* Logical device, lun is already assigned. */
702 /* If this device a non-zero lun of a multi-lun device
703 * byte 4 of the 8-byte LUN addr will contain the logical
704 * unit no, zero otherise.
706 if (device
->scsi3addr
[4] == 0) {
707 /* This is not a non-zero lun of a multi-lun device */
708 if (hpsa_find_target_lun(h
, device
->scsi3addr
,
709 device
->bus
, &device
->target
, &device
->lun
) != 0)
714 /* This is a non-zero lun of a multi-lun device.
715 * Search through our list and find the device which
716 * has the same 8 byte LUN address, excepting byte 4.
717 * Assign the same bus and target for this new LUN.
718 * Use the logical unit number from the firmware.
720 memcpy(addr1
, device
->scsi3addr
, 8);
722 for (i
= 0; i
< n
; i
++) {
724 memcpy(addr2
, sd
->scsi3addr
, 8);
726 /* differ only in byte 4? */
727 if (memcmp(addr1
, addr2
, 8) == 0) {
728 device
->bus
= sd
->bus
;
729 device
->target
= sd
->target
;
730 device
->lun
= device
->scsi3addr
[4];
734 if (device
->lun
== -1) {
735 dev_warn(&h
->pdev
->dev
, "physical device with no LUN=0,"
736 " suspect firmware bug or unsupported hardware "
745 added
[*nadded
] = device
;
748 /* initially, (before registering with scsi layer) we don't
749 * know our hostno and we don't want to print anything first
750 * time anyway (the scsi layer's inquiries will show that info)
752 /* if (hostno != -1) */
753 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d added.\n",
754 scsi_device_type(device
->devtype
), hostno
,
755 device
->bus
, device
->target
, device
->lun
);
759 /* Update an entry in h->dev[] array. */
760 static void hpsa_scsi_update_entry(struct ctlr_info
*h
, int hostno
,
761 int entry
, struct hpsa_scsi_dev_t
*new_entry
)
763 /* assumes h->devlock is held */
764 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_DEVICES
);
766 /* Raid level changed. */
767 h
->dev
[entry
]->raid_level
= new_entry
->raid_level
;
768 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d updated.\n",
769 scsi_device_type(new_entry
->devtype
), hostno
, new_entry
->bus
,
770 new_entry
->target
, new_entry
->lun
);
773 /* Replace an entry from h->dev[] array. */
774 static void hpsa_scsi_replace_entry(struct ctlr_info
*h
, int hostno
,
775 int entry
, struct hpsa_scsi_dev_t
*new_entry
,
776 struct hpsa_scsi_dev_t
*added
[], int *nadded
,
777 struct hpsa_scsi_dev_t
*removed
[], int *nremoved
)
779 /* assumes h->devlock is held */
780 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_DEVICES
);
781 removed
[*nremoved
] = h
->dev
[entry
];
785 * New physical devices won't have target/lun assigned yet
786 * so we need to preserve the values in the slot we are replacing.
788 if (new_entry
->target
== -1) {
789 new_entry
->target
= h
->dev
[entry
]->target
;
790 new_entry
->lun
= h
->dev
[entry
]->lun
;
793 h
->dev
[entry
] = new_entry
;
794 added
[*nadded
] = new_entry
;
796 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d changed.\n",
797 scsi_device_type(new_entry
->devtype
), hostno
, new_entry
->bus
,
798 new_entry
->target
, new_entry
->lun
);
801 /* Remove an entry from h->dev[] array. */
802 static void hpsa_scsi_remove_entry(struct ctlr_info
*h
, int hostno
, int entry
,
803 struct hpsa_scsi_dev_t
*removed
[], int *nremoved
)
805 /* assumes h->devlock is held */
807 struct hpsa_scsi_dev_t
*sd
;
809 BUG_ON(entry
< 0 || entry
>= HPSA_MAX_DEVICES
);
812 removed
[*nremoved
] = h
->dev
[entry
];
815 for (i
= entry
; i
< h
->ndevices
-1; i
++)
816 h
->dev
[i
] = h
->dev
[i
+1];
818 dev_info(&h
->pdev
->dev
, "%s device c%db%dt%dl%d removed.\n",
819 scsi_device_type(sd
->devtype
), hostno
, sd
->bus
, sd
->target
,
823 #define SCSI3ADDR_EQ(a, b) ( \
824 (a)[7] == (b)[7] && \
825 (a)[6] == (b)[6] && \
826 (a)[5] == (b)[5] && \
827 (a)[4] == (b)[4] && \
828 (a)[3] == (b)[3] && \
829 (a)[2] == (b)[2] && \
830 (a)[1] == (b)[1] && \
833 static void fixup_botched_add(struct ctlr_info
*h
,
834 struct hpsa_scsi_dev_t
*added
)
836 /* called when scsi_add_device fails in order to re-adjust
837 * h->dev[] to match the mid layer's view.
842 spin_lock_irqsave(&h
->lock
, flags
);
843 for (i
= 0; i
< h
->ndevices
; i
++) {
844 if (h
->dev
[i
] == added
) {
845 for (j
= i
; j
< h
->ndevices
-1; j
++)
846 h
->dev
[j
] = h
->dev
[j
+1];
851 spin_unlock_irqrestore(&h
->lock
, flags
);
855 static inline int device_is_the_same(struct hpsa_scsi_dev_t
*dev1
,
856 struct hpsa_scsi_dev_t
*dev2
)
858 /* we compare everything except lun and target as these
859 * are not yet assigned. Compare parts likely
862 if (memcmp(dev1
->scsi3addr
, dev2
->scsi3addr
,
863 sizeof(dev1
->scsi3addr
)) != 0)
865 if (memcmp(dev1
->device_id
, dev2
->device_id
,
866 sizeof(dev1
->device_id
)) != 0)
868 if (memcmp(dev1
->model
, dev2
->model
, sizeof(dev1
->model
)) != 0)
870 if (memcmp(dev1
->vendor
, dev2
->vendor
, sizeof(dev1
->vendor
)) != 0)
872 if (dev1
->devtype
!= dev2
->devtype
)
874 if (dev1
->bus
!= dev2
->bus
)
879 static inline int device_updated(struct hpsa_scsi_dev_t
*dev1
,
880 struct hpsa_scsi_dev_t
*dev2
)
882 /* Device attributes that can change, but don't mean
883 * that the device is a different device, nor that the OS
884 * needs to be told anything about the change.
886 if (dev1
->raid_level
!= dev2
->raid_level
)
891 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
892 * and return needle location in *index. If scsi3addr matches, but not
893 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
894 * location in *index.
895 * In the case of a minor device attribute change, such as RAID level, just
896 * return DEVICE_UPDATED, along with the updated device's location in index.
897 * If needle not found, return DEVICE_NOT_FOUND.
899 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t
*needle
,
900 struct hpsa_scsi_dev_t
*haystack
[], int haystack_size
,
904 #define DEVICE_NOT_FOUND 0
905 #define DEVICE_CHANGED 1
906 #define DEVICE_SAME 2
907 #define DEVICE_UPDATED 3
908 for (i
= 0; i
< haystack_size
; i
++) {
909 if (haystack
[i
] == NULL
) /* previously removed. */
911 if (SCSI3ADDR_EQ(needle
->scsi3addr
, haystack
[i
]->scsi3addr
)) {
913 if (device_is_the_same(needle
, haystack
[i
])) {
914 if (device_updated(needle
, haystack
[i
]))
915 return DEVICE_UPDATED
;
918 return DEVICE_CHANGED
;
923 return DEVICE_NOT_FOUND
;
926 static void adjust_hpsa_scsi_table(struct ctlr_info
*h
, int hostno
,
927 struct hpsa_scsi_dev_t
*sd
[], int nsds
)
929 /* sd contains scsi3 addresses and devtypes, and inquiry
930 * data. This function takes what's in sd to be the current
931 * reality and updates h->dev[] to reflect that reality.
933 int i
, entry
, device_change
, changes
= 0;
934 struct hpsa_scsi_dev_t
*csd
;
936 struct hpsa_scsi_dev_t
**added
, **removed
;
937 int nadded
, nremoved
;
938 struct Scsi_Host
*sh
= NULL
;
940 added
= kzalloc(sizeof(*added
) * HPSA_MAX_DEVICES
, GFP_KERNEL
);
941 removed
= kzalloc(sizeof(*removed
) * HPSA_MAX_DEVICES
, GFP_KERNEL
);
943 if (!added
|| !removed
) {
944 dev_warn(&h
->pdev
->dev
, "out of memory in "
945 "adjust_hpsa_scsi_table\n");
949 spin_lock_irqsave(&h
->devlock
, flags
);
951 /* find any devices in h->dev[] that are not in
952 * sd[] and remove them from h->dev[], and for any
953 * devices which have changed, remove the old device
954 * info and add the new device info.
955 * If minor device attributes change, just update
956 * the existing device structure.
961 while (i
< h
->ndevices
) {
963 device_change
= hpsa_scsi_find_entry(csd
, sd
, nsds
, &entry
);
964 if (device_change
== DEVICE_NOT_FOUND
) {
966 hpsa_scsi_remove_entry(h
, hostno
, i
,
968 continue; /* remove ^^^, hence i not incremented */
969 } else if (device_change
== DEVICE_CHANGED
) {
971 hpsa_scsi_replace_entry(h
, hostno
, i
, sd
[entry
],
972 added
, &nadded
, removed
, &nremoved
);
973 /* Set it to NULL to prevent it from being freed
974 * at the bottom of hpsa_update_scsi_devices()
977 } else if (device_change
== DEVICE_UPDATED
) {
978 hpsa_scsi_update_entry(h
, hostno
, i
, sd
[entry
]);
983 /* Now, make sure every device listed in sd[] is also
984 * listed in h->dev[], adding them if they aren't found
987 for (i
= 0; i
< nsds
; i
++) {
988 if (!sd
[i
]) /* if already added above. */
990 device_change
= hpsa_scsi_find_entry(sd
[i
], h
->dev
,
991 h
->ndevices
, &entry
);
992 if (device_change
== DEVICE_NOT_FOUND
) {
994 if (hpsa_scsi_add_entry(h
, hostno
, sd
[i
],
995 added
, &nadded
) != 0)
997 sd
[i
] = NULL
; /* prevent from being freed later. */
998 } else if (device_change
== DEVICE_CHANGED
) {
999 /* should never happen... */
1001 dev_warn(&h
->pdev
->dev
,
1002 "device unexpectedly changed.\n");
1003 /* but if it does happen, we just ignore that device */
1006 spin_unlock_irqrestore(&h
->devlock
, flags
);
1008 /* Don't notify scsi mid layer of any changes the first time through
1009 * (or if there are no changes) scsi_scan_host will do it later the
1010 * first time through.
1012 if (hostno
== -1 || !changes
)
1016 /* Notify scsi mid layer of any removed devices */
1017 for (i
= 0; i
< nremoved
; i
++) {
1018 struct scsi_device
*sdev
=
1019 scsi_device_lookup(sh
, removed
[i
]->bus
,
1020 removed
[i
]->target
, removed
[i
]->lun
);
1022 scsi_remove_device(sdev
);
1023 scsi_device_put(sdev
);
1025 /* We don't expect to get here.
1026 * future cmds to this device will get selection
1027 * timeout as if the device was gone.
1029 dev_warn(&h
->pdev
->dev
, "didn't find c%db%dt%dl%d "
1030 " for removal.", hostno
, removed
[i
]->bus
,
1031 removed
[i
]->target
, removed
[i
]->lun
);
1037 /* Notify scsi mid layer of any added devices */
1038 for (i
= 0; i
< nadded
; i
++) {
1039 if (scsi_add_device(sh
, added
[i
]->bus
,
1040 added
[i
]->target
, added
[i
]->lun
) == 0)
1042 dev_warn(&h
->pdev
->dev
, "scsi_add_device c%db%dt%dl%d failed, "
1043 "device not added.\n", hostno
, added
[i
]->bus
,
1044 added
[i
]->target
, added
[i
]->lun
);
1045 /* now we have to remove it from h->dev,
1046 * since it didn't get added to scsi mid layer
1048 fixup_botched_add(h
, added
[i
]);
1057 * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t *
1058 * Assume's h->devlock is held.
1060 static struct hpsa_scsi_dev_t
*lookup_hpsa_scsi_dev(struct ctlr_info
*h
,
1061 int bus
, int target
, int lun
)
1064 struct hpsa_scsi_dev_t
*sd
;
1066 for (i
= 0; i
< h
->ndevices
; i
++) {
1068 if (sd
->bus
== bus
&& sd
->target
== target
&& sd
->lun
== lun
)
1074 /* link sdev->hostdata to our per-device structure. */
1075 static int hpsa_slave_alloc(struct scsi_device
*sdev
)
1077 struct hpsa_scsi_dev_t
*sd
;
1078 unsigned long flags
;
1079 struct ctlr_info
*h
;
1081 h
= sdev_to_hba(sdev
);
1082 spin_lock_irqsave(&h
->devlock
, flags
);
1083 sd
= lookup_hpsa_scsi_dev(h
, sdev_channel(sdev
),
1084 sdev_id(sdev
), sdev
->lun
);
1086 sdev
->hostdata
= sd
;
1087 spin_unlock_irqrestore(&h
->devlock
, flags
);
1091 static void hpsa_slave_destroy(struct scsi_device
*sdev
)
1093 /* nothing to do. */
1096 static void hpsa_free_sg_chain_blocks(struct ctlr_info
*h
)
1100 if (!h
->cmd_sg_list
)
1102 for (i
= 0; i
< h
->nr_cmds
; i
++) {
1103 kfree(h
->cmd_sg_list
[i
]);
1104 h
->cmd_sg_list
[i
] = NULL
;
1106 kfree(h
->cmd_sg_list
);
1107 h
->cmd_sg_list
= NULL
;
1110 static int hpsa_allocate_sg_chain_blocks(struct ctlr_info
*h
)
1114 if (h
->chainsize
<= 0)
1117 h
->cmd_sg_list
= kzalloc(sizeof(*h
->cmd_sg_list
) * h
->nr_cmds
,
1119 if (!h
->cmd_sg_list
)
1121 for (i
= 0; i
< h
->nr_cmds
; i
++) {
1122 h
->cmd_sg_list
[i
] = kmalloc(sizeof(*h
->cmd_sg_list
[i
]) *
1123 h
->chainsize
, GFP_KERNEL
);
1124 if (!h
->cmd_sg_list
[i
])
1130 hpsa_free_sg_chain_blocks(h
);
1134 static void hpsa_map_sg_chain_block(struct ctlr_info
*h
,
1135 struct CommandList
*c
)
1137 struct SGDescriptor
*chain_sg
, *chain_block
;
1140 chain_sg
= &c
->SG
[h
->max_cmd_sg_entries
- 1];
1141 chain_block
= h
->cmd_sg_list
[c
->cmdindex
];
1142 chain_sg
->Ext
= HPSA_SG_CHAIN
;
1143 chain_sg
->Len
= sizeof(*chain_sg
) *
1144 (c
->Header
.SGTotal
- h
->max_cmd_sg_entries
);
1145 temp64
= pci_map_single(h
->pdev
, chain_block
, chain_sg
->Len
,
1147 chain_sg
->Addr
.lower
= (u32
) (temp64
& 0x0FFFFFFFFULL
);
1148 chain_sg
->Addr
.upper
= (u32
) ((temp64
>> 32) & 0x0FFFFFFFFULL
);
1151 static void hpsa_unmap_sg_chain_block(struct ctlr_info
*h
,
1152 struct CommandList
*c
)
1154 struct SGDescriptor
*chain_sg
;
1155 union u64bit temp64
;
1157 if (c
->Header
.SGTotal
<= h
->max_cmd_sg_entries
)
1160 chain_sg
= &c
->SG
[h
->max_cmd_sg_entries
- 1];
1161 temp64
.val32
.lower
= chain_sg
->Addr
.lower
;
1162 temp64
.val32
.upper
= chain_sg
->Addr
.upper
;
1163 pci_unmap_single(h
->pdev
, temp64
.val
, chain_sg
->Len
, PCI_DMA_TODEVICE
);
1166 static void complete_scsi_command(struct CommandList
*cp
)
1168 struct scsi_cmnd
*cmd
;
1169 struct ctlr_info
*h
;
1170 struct ErrorInfo
*ei
;
1172 unsigned char sense_key
;
1173 unsigned char asc
; /* additional sense code */
1174 unsigned char ascq
; /* additional sense code qualifier */
1175 unsigned long sense_data_size
;
1178 cmd
= (struct scsi_cmnd
*) cp
->scsi_cmd
;
1181 scsi_dma_unmap(cmd
); /* undo the DMA mappings */
1182 if (cp
->Header
.SGTotal
> h
->max_cmd_sg_entries
)
1183 hpsa_unmap_sg_chain_block(h
, cp
);
1185 cmd
->result
= (DID_OK
<< 16); /* host byte */
1186 cmd
->result
|= (COMMAND_COMPLETE
<< 8); /* msg byte */
1187 cmd
->result
|= ei
->ScsiStatus
;
1189 /* copy the sense data whether we need to or not. */
1190 if (SCSI_SENSE_BUFFERSIZE
< sizeof(ei
->SenseInfo
))
1191 sense_data_size
= SCSI_SENSE_BUFFERSIZE
;
1193 sense_data_size
= sizeof(ei
->SenseInfo
);
1194 if (ei
->SenseLen
< sense_data_size
)
1195 sense_data_size
= ei
->SenseLen
;
1197 memcpy(cmd
->sense_buffer
, ei
->SenseInfo
, sense_data_size
);
1198 scsi_set_resid(cmd
, ei
->ResidualCnt
);
1200 if (ei
->CommandStatus
== 0) {
1201 cmd
->scsi_done(cmd
);
1206 /* an error has occurred */
1207 switch (ei
->CommandStatus
) {
1209 case CMD_TARGET_STATUS
:
1210 if (ei
->ScsiStatus
) {
1212 sense_key
= 0xf & ei
->SenseInfo
[2];
1213 /* Get additional sense code */
1214 asc
= ei
->SenseInfo
[12];
1215 /* Get addition sense code qualifier */
1216 ascq
= ei
->SenseInfo
[13];
1219 if (ei
->ScsiStatus
== SAM_STAT_CHECK_CONDITION
) {
1220 if (check_for_unit_attention(h
, cp
)) {
1221 cmd
->result
= DID_SOFT_ERROR
<< 16;
1224 if (sense_key
== ILLEGAL_REQUEST
) {
1226 * SCSI REPORT_LUNS is commonly unsupported on
1227 * Smart Array. Suppress noisy complaint.
1229 if (cp
->Request
.CDB
[0] == REPORT_LUNS
)
1232 /* If ASC/ASCQ indicate Logical Unit
1233 * Not Supported condition,
1235 if ((asc
== 0x25) && (ascq
== 0x0)) {
1236 dev_warn(&h
->pdev
->dev
, "cp %p "
1237 "has check condition\n", cp
);
1242 if (sense_key
== NOT_READY
) {
1243 /* If Sense is Not Ready, Logical Unit
1244 * Not ready, Manual Intervention
1247 if ((asc
== 0x04) && (ascq
== 0x03)) {
1248 dev_warn(&h
->pdev
->dev
, "cp %p "
1249 "has check condition: unit "
1250 "not ready, manual "
1251 "intervention required\n", cp
);
1255 if (sense_key
== ABORTED_COMMAND
) {
1256 /* Aborted command is retryable */
1257 dev_warn(&h
->pdev
->dev
, "cp %p "
1258 "has check condition: aborted command: "
1259 "ASC: 0x%x, ASCQ: 0x%x\n",
1261 cmd
->result
= DID_SOFT_ERROR
<< 16;
1264 /* Must be some other type of check condition */
1265 dev_dbg(&h
->pdev
->dev
, "cp %p has check condition: "
1267 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1268 "Returning result: 0x%x, "
1269 "cmd=[%02x %02x %02x %02x %02x "
1270 "%02x %02x %02x %02x %02x %02x "
1271 "%02x %02x %02x %02x %02x]\n",
1272 cp
, sense_key
, asc
, ascq
,
1274 cmd
->cmnd
[0], cmd
->cmnd
[1],
1275 cmd
->cmnd
[2], cmd
->cmnd
[3],
1276 cmd
->cmnd
[4], cmd
->cmnd
[5],
1277 cmd
->cmnd
[6], cmd
->cmnd
[7],
1278 cmd
->cmnd
[8], cmd
->cmnd
[9],
1279 cmd
->cmnd
[10], cmd
->cmnd
[11],
1280 cmd
->cmnd
[12], cmd
->cmnd
[13],
1281 cmd
->cmnd
[14], cmd
->cmnd
[15]);
1286 /* Problem was not a check condition
1287 * Pass it up to the upper layers...
1289 if (ei
->ScsiStatus
) {
1290 dev_warn(&h
->pdev
->dev
, "cp %p has status 0x%x "
1291 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
1292 "Returning result: 0x%x\n",
1294 sense_key
, asc
, ascq
,
1296 } else { /* scsi status is zero??? How??? */
1297 dev_warn(&h
->pdev
->dev
, "cp %p SCSI status was 0. "
1298 "Returning no connection.\n", cp
),
1300 /* Ordinarily, this case should never happen,
1301 * but there is a bug in some released firmware
1302 * revisions that allows it to happen if, for
1303 * example, a 4100 backplane loses power and
1304 * the tape drive is in it. We assume that
1305 * it's a fatal error of some kind because we
1306 * can't show that it wasn't. We will make it
1307 * look like selection timeout since that is
1308 * the most common reason for this to occur,
1309 * and it's severe enough.
1312 cmd
->result
= DID_NO_CONNECT
<< 16;
1316 case CMD_DATA_UNDERRUN
: /* let mid layer handle it. */
1318 case CMD_DATA_OVERRUN
:
1319 dev_warn(&h
->pdev
->dev
, "cp %p has"
1320 " completed with data overrun "
1324 /* print_bytes(cp, sizeof(*cp), 1, 0);
1326 /* We get CMD_INVALID if you address a non-existent device
1327 * instead of a selection timeout (no response). You will
1328 * see this if you yank out a drive, then try to access it.
1329 * This is kind of a shame because it means that any other
1330 * CMD_INVALID (e.g. driver bug) will get interpreted as a
1331 * missing target. */
1332 cmd
->result
= DID_NO_CONNECT
<< 16;
1335 case CMD_PROTOCOL_ERR
:
1336 cmd
->result
= DID_ERROR
<< 16;
1337 dev_warn(&h
->pdev
->dev
, "cp %p has "
1338 "protocol error\n", cp
);
1340 case CMD_HARDWARE_ERR
:
1341 cmd
->result
= DID_ERROR
<< 16;
1342 dev_warn(&h
->pdev
->dev
, "cp %p had hardware error\n", cp
);
1344 case CMD_CONNECTION_LOST
:
1345 cmd
->result
= DID_ERROR
<< 16;
1346 dev_warn(&h
->pdev
->dev
, "cp %p had connection lost\n", cp
);
1349 cmd
->result
= DID_ABORT
<< 16;
1350 dev_warn(&h
->pdev
->dev
, "cp %p was aborted with status 0x%x\n",
1351 cp
, ei
->ScsiStatus
);
1353 case CMD_ABORT_FAILED
:
1354 cmd
->result
= DID_ERROR
<< 16;
1355 dev_warn(&h
->pdev
->dev
, "cp %p reports abort failed\n", cp
);
1357 case CMD_UNSOLICITED_ABORT
:
1358 cmd
->result
= DID_SOFT_ERROR
<< 16; /* retry the command */
1359 dev_warn(&h
->pdev
->dev
, "cp %p aborted due to an unsolicited "
1363 cmd
->result
= DID_TIME_OUT
<< 16;
1364 dev_warn(&h
->pdev
->dev
, "cp %p timedout\n", cp
);
1366 case CMD_UNABORTABLE
:
1367 cmd
->result
= DID_ERROR
<< 16;
1368 dev_warn(&h
->pdev
->dev
, "Command unabortable\n");
1371 cmd
->result
= DID_ERROR
<< 16;
1372 dev_warn(&h
->pdev
->dev
, "cp %p returned unknown status %x\n",
1373 cp
, ei
->CommandStatus
);
1375 cmd
->scsi_done(cmd
);
1379 static void hpsa_pci_unmap(struct pci_dev
*pdev
,
1380 struct CommandList
*c
, int sg_used
, int data_direction
)
1383 union u64bit addr64
;
1385 for (i
= 0; i
< sg_used
; i
++) {
1386 addr64
.val32
.lower
= c
->SG
[i
].Addr
.lower
;
1387 addr64
.val32
.upper
= c
->SG
[i
].Addr
.upper
;
1388 pci_unmap_single(pdev
, (dma_addr_t
) addr64
.val
, c
->SG
[i
].Len
,
1393 static void hpsa_map_one(struct pci_dev
*pdev
,
1394 struct CommandList
*cp
,
1401 if (buflen
== 0 || data_direction
== PCI_DMA_NONE
) {
1402 cp
->Header
.SGList
= 0;
1403 cp
->Header
.SGTotal
= 0;
1407 addr64
= (u64
) pci_map_single(pdev
, buf
, buflen
, data_direction
);
1408 cp
->SG
[0].Addr
.lower
=
1409 (u32
) (addr64
& (u64
) 0x00000000FFFFFFFF);
1410 cp
->SG
[0].Addr
.upper
=
1411 (u32
) ((addr64
>> 32) & (u64
) 0x00000000FFFFFFFF);
1412 cp
->SG
[0].Len
= buflen
;
1413 cp
->Header
.SGList
= (u8
) 1; /* no. SGs contig in this cmd */
1414 cp
->Header
.SGTotal
= (u16
) 1; /* total sgs in this cmd list */
1417 static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info
*h
,
1418 struct CommandList
*c
)
1420 DECLARE_COMPLETION_ONSTACK(wait
);
1423 enqueue_cmd_and_start_io(h
, c
);
1424 wait_for_completion(&wait
);
1427 static void hpsa_scsi_do_simple_cmd_core_if_no_lockup(struct ctlr_info
*h
,
1428 struct CommandList
*c
)
1430 unsigned long flags
;
1432 /* If controller lockup detected, fake a hardware error. */
1433 spin_lock_irqsave(&h
->lock
, flags
);
1434 if (unlikely(h
->lockup_detected
)) {
1435 spin_unlock_irqrestore(&h
->lock
, flags
);
1436 c
->err_info
->CommandStatus
= CMD_HARDWARE_ERR
;
1438 spin_unlock_irqrestore(&h
->lock
, flags
);
1439 hpsa_scsi_do_simple_cmd_core(h
, c
);
1443 #define MAX_DRIVER_CMD_RETRIES 25
1444 static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info
*h
,
1445 struct CommandList
*c
, int data_direction
)
1447 int backoff_time
= 10, retry_count
= 0;
1450 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
1451 hpsa_scsi_do_simple_cmd_core(h
, c
);
1453 if (retry_count
> 3) {
1454 msleep(backoff_time
);
1455 if (backoff_time
< 1000)
1458 } while ((check_for_unit_attention(h
, c
) ||
1459 check_for_busy(h
, c
)) &&
1460 retry_count
<= MAX_DRIVER_CMD_RETRIES
);
1461 hpsa_pci_unmap(h
->pdev
, c
, 1, data_direction
);
1464 static void hpsa_scsi_interpret_error(struct CommandList
*cp
)
1466 struct ErrorInfo
*ei
;
1467 struct device
*d
= &cp
->h
->pdev
->dev
;
1470 switch (ei
->CommandStatus
) {
1471 case CMD_TARGET_STATUS
:
1472 dev_warn(d
, "cmd %p has completed with errors\n", cp
);
1473 dev_warn(d
, "cmd %p has SCSI Status = %x\n", cp
,
1475 if (ei
->ScsiStatus
== 0)
1476 dev_warn(d
, "SCSI status is abnormally zero. "
1477 "(probably indicates selection timeout "
1478 "reported incorrectly due to a known "
1479 "firmware bug, circa July, 2001.)\n");
1481 case CMD_DATA_UNDERRUN
: /* let mid layer handle it. */
1482 dev_info(d
, "UNDERRUN\n");
1484 case CMD_DATA_OVERRUN
:
1485 dev_warn(d
, "cp %p has completed with data overrun\n", cp
);
1488 /* controller unfortunately reports SCSI passthru's
1489 * to non-existent targets as invalid commands.
1491 dev_warn(d
, "cp %p is reported invalid (probably means "
1492 "target device no longer present)\n", cp
);
1493 /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0);
1497 case CMD_PROTOCOL_ERR
:
1498 dev_warn(d
, "cp %p has protocol error \n", cp
);
1500 case CMD_HARDWARE_ERR
:
1501 /* cmd->result = DID_ERROR << 16; */
1502 dev_warn(d
, "cp %p had hardware error\n", cp
);
1504 case CMD_CONNECTION_LOST
:
1505 dev_warn(d
, "cp %p had connection lost\n", cp
);
1508 dev_warn(d
, "cp %p was aborted\n", cp
);
1510 case CMD_ABORT_FAILED
:
1511 dev_warn(d
, "cp %p reports abort failed\n", cp
);
1513 case CMD_UNSOLICITED_ABORT
:
1514 dev_warn(d
, "cp %p aborted due to an unsolicited abort\n", cp
);
1517 dev_warn(d
, "cp %p timed out\n", cp
);
1519 case CMD_UNABORTABLE
:
1520 dev_warn(d
, "Command unabortable\n");
1523 dev_warn(d
, "cp %p returned unknown status %x\n", cp
,
1528 static int hpsa_scsi_do_inquiry(struct ctlr_info
*h
, unsigned char *scsi3addr
,
1529 unsigned char page
, unsigned char *buf
,
1530 unsigned char bufsize
)
1533 struct CommandList
*c
;
1534 struct ErrorInfo
*ei
;
1536 c
= cmd_special_alloc(h
);
1538 if (c
== NULL
) { /* trouble... */
1539 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1543 fill_cmd(c
, HPSA_INQUIRY
, h
, buf
, bufsize
, page
, scsi3addr
, TYPE_CMD
);
1544 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_FROMDEVICE
);
1546 if (ei
->CommandStatus
!= 0 && ei
->CommandStatus
!= CMD_DATA_UNDERRUN
) {
1547 hpsa_scsi_interpret_error(c
);
1550 cmd_special_free(h
, c
);
1554 static int hpsa_send_reset(struct ctlr_info
*h
, unsigned char *scsi3addr
)
1557 struct CommandList
*c
;
1558 struct ErrorInfo
*ei
;
1560 c
= cmd_special_alloc(h
);
1562 if (c
== NULL
) { /* trouble... */
1563 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1567 fill_cmd(c
, HPSA_DEVICE_RESET_MSG
, h
, NULL
, 0, 0, scsi3addr
, TYPE_MSG
);
1568 hpsa_scsi_do_simple_cmd_core(h
, c
);
1569 /* no unmap needed here because no data xfer. */
1572 if (ei
->CommandStatus
!= 0) {
1573 hpsa_scsi_interpret_error(c
);
1576 cmd_special_free(h
, c
);
1580 static void hpsa_get_raid_level(struct ctlr_info
*h
,
1581 unsigned char *scsi3addr
, unsigned char *raid_level
)
1586 *raid_level
= RAID_UNKNOWN
;
1587 buf
= kzalloc(64, GFP_KERNEL
);
1590 rc
= hpsa_scsi_do_inquiry(h
, scsi3addr
, 0xC1, buf
, 64);
1592 *raid_level
= buf
[8];
1593 if (*raid_level
> RAID_UNKNOWN
)
1594 *raid_level
= RAID_UNKNOWN
;
1599 /* Get the device id from inquiry page 0x83 */
1600 static int hpsa_get_device_id(struct ctlr_info
*h
, unsigned char *scsi3addr
,
1601 unsigned char *device_id
, int buflen
)
1608 buf
= kzalloc(64, GFP_KERNEL
);
1611 rc
= hpsa_scsi_do_inquiry(h
, scsi3addr
, 0x83, buf
, 64);
1613 memcpy(device_id
, &buf
[8], buflen
);
1618 static int hpsa_scsi_do_report_luns(struct ctlr_info
*h
, int logical
,
1619 struct ReportLUNdata
*buf
, int bufsize
,
1620 int extended_response
)
1623 struct CommandList
*c
;
1624 unsigned char scsi3addr
[8];
1625 struct ErrorInfo
*ei
;
1627 c
= cmd_special_alloc(h
);
1628 if (c
== NULL
) { /* trouble... */
1629 dev_err(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
1632 /* address the controller */
1633 memset(scsi3addr
, 0, sizeof(scsi3addr
));
1634 fill_cmd(c
, logical
? HPSA_REPORT_LOG
: HPSA_REPORT_PHYS
, h
,
1635 buf
, bufsize
, 0, scsi3addr
, TYPE_CMD
);
1636 if (extended_response
)
1637 c
->Request
.CDB
[1] = extended_response
;
1638 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_FROMDEVICE
);
1640 if (ei
->CommandStatus
!= 0 &&
1641 ei
->CommandStatus
!= CMD_DATA_UNDERRUN
) {
1642 hpsa_scsi_interpret_error(c
);
1645 cmd_special_free(h
, c
);
1649 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info
*h
,
1650 struct ReportLUNdata
*buf
,
1651 int bufsize
, int extended_response
)
1653 return hpsa_scsi_do_report_luns(h
, 0, buf
, bufsize
, extended_response
);
1656 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info
*h
,
1657 struct ReportLUNdata
*buf
, int bufsize
)
1659 return hpsa_scsi_do_report_luns(h
, 1, buf
, bufsize
, 0);
1662 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t
*device
,
1663 int bus
, int target
, int lun
)
1666 device
->target
= target
;
1670 static int hpsa_update_device_info(struct ctlr_info
*h
,
1671 unsigned char scsi3addr
[], struct hpsa_scsi_dev_t
*this_device
,
1672 unsigned char *is_OBDR_device
)
1675 #define OBDR_SIG_OFFSET 43
1676 #define OBDR_TAPE_SIG "$DR-10"
1677 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
1678 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
1680 unsigned char *inq_buff
;
1681 unsigned char *obdr_sig
;
1683 inq_buff
= kzalloc(OBDR_TAPE_INQ_SIZE
, GFP_KERNEL
);
1687 /* Do an inquiry to the device to see what it is. */
1688 if (hpsa_scsi_do_inquiry(h
, scsi3addr
, 0, inq_buff
,
1689 (unsigned char) OBDR_TAPE_INQ_SIZE
) != 0) {
1690 /* Inquiry failed (msg printed already) */
1691 dev_err(&h
->pdev
->dev
,
1692 "hpsa_update_device_info: inquiry failed\n");
1696 this_device
->devtype
= (inq_buff
[0] & 0x1f);
1697 memcpy(this_device
->scsi3addr
, scsi3addr
, 8);
1698 memcpy(this_device
->vendor
, &inq_buff
[8],
1699 sizeof(this_device
->vendor
));
1700 memcpy(this_device
->model
, &inq_buff
[16],
1701 sizeof(this_device
->model
));
1702 memset(this_device
->device_id
, 0,
1703 sizeof(this_device
->device_id
));
1704 hpsa_get_device_id(h
, scsi3addr
, this_device
->device_id
,
1705 sizeof(this_device
->device_id
));
1707 if (this_device
->devtype
== TYPE_DISK
&&
1708 is_logical_dev_addr_mode(scsi3addr
))
1709 hpsa_get_raid_level(h
, scsi3addr
, &this_device
->raid_level
);
1711 this_device
->raid_level
= RAID_UNKNOWN
;
1713 if (is_OBDR_device
) {
1714 /* See if this is a One-Button-Disaster-Recovery device
1715 * by looking for "$DR-10" at offset 43 in inquiry data.
1717 obdr_sig
= &inq_buff
[OBDR_SIG_OFFSET
];
1718 *is_OBDR_device
= (this_device
->devtype
== TYPE_ROM
&&
1719 strncmp(obdr_sig
, OBDR_TAPE_SIG
,
1720 OBDR_SIG_LEN
) == 0);
1731 static unsigned char *ext_target_model
[] = {
1740 static int is_ext_target(struct ctlr_info
*h
, struct hpsa_scsi_dev_t
*device
)
1744 for (i
= 0; ext_target_model
[i
]; i
++)
1745 if (strncmp(device
->model
, ext_target_model
[i
],
1746 strlen(ext_target_model
[i
])) == 0)
1751 /* Helper function to assign bus, target, lun mapping of devices.
1752 * Puts non-external target logical volumes on bus 0, external target logical
1753 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
1754 * Logical drive target and lun are assigned at this time, but
1755 * physical device lun and target assignment are deferred (assigned
1756 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
1758 static void figure_bus_target_lun(struct ctlr_info
*h
,
1759 u8
*lunaddrbytes
, struct hpsa_scsi_dev_t
*device
)
1761 u32 lunid
= le32_to_cpu(*((__le32
*) lunaddrbytes
));
1763 if (!is_logical_dev_addr_mode(lunaddrbytes
)) {
1764 /* physical device, target and lun filled in later */
1765 if (is_hba_lunid(lunaddrbytes
))
1766 hpsa_set_bus_target_lun(device
, 3, 0, lunid
& 0x3fff);
1768 /* defer target, lun assignment for physical devices */
1769 hpsa_set_bus_target_lun(device
, 2, -1, -1);
1772 /* It's a logical device */
1773 if (is_ext_target(h
, device
)) {
1774 /* external target way, put logicals on bus 1
1775 * and match target/lun numbers box
1776 * reports, other smart array, bus 0, target 0, match lunid
1778 hpsa_set_bus_target_lun(device
,
1779 1, (lunid
>> 16) & 0x3fff, lunid
& 0x00ff);
1782 hpsa_set_bus_target_lun(device
, 0, 0, lunid
& 0x3fff);
1786 * If there is no lun 0 on a target, linux won't find any devices.
1787 * For the external targets (arrays), we have to manually detect the enclosure
1788 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
1789 * it for some reason. *tmpdevice is the target we're adding,
1790 * this_device is a pointer into the current element of currentsd[]
1791 * that we're building up in update_scsi_devices(), below.
1792 * lunzerobits is a bitmap that tracks which targets already have a
1794 * Returns 1 if an enclosure was added, 0 if not.
1796 static int add_ext_target_dev(struct ctlr_info
*h
,
1797 struct hpsa_scsi_dev_t
*tmpdevice
,
1798 struct hpsa_scsi_dev_t
*this_device
, u8
*lunaddrbytes
,
1799 unsigned long lunzerobits
[], int *n_ext_target_devs
)
1801 unsigned char scsi3addr
[8];
1803 if (test_bit(tmpdevice
->target
, lunzerobits
))
1804 return 0; /* There is already a lun 0 on this target. */
1806 if (!is_logical_dev_addr_mode(lunaddrbytes
))
1807 return 0; /* It's the logical targets that may lack lun 0. */
1809 if (!is_ext_target(h
, tmpdevice
))
1810 return 0; /* Only external target devices have this problem. */
1812 if (tmpdevice
->lun
== 0) /* if lun is 0, then we have a lun 0. */
1815 memset(scsi3addr
, 0, 8);
1816 scsi3addr
[3] = tmpdevice
->target
;
1817 if (is_hba_lunid(scsi3addr
))
1818 return 0; /* Don't add the RAID controller here. */
1820 if (is_scsi_rev_5(h
))
1821 return 0; /* p1210m doesn't need to do this. */
1823 if (*n_ext_target_devs
>= MAX_EXT_TARGETS
) {
1824 dev_warn(&h
->pdev
->dev
, "Maximum number of external "
1825 "target devices exceeded. Check your hardware "
1830 if (hpsa_update_device_info(h
, scsi3addr
, this_device
, NULL
))
1832 (*n_ext_target_devs
)++;
1833 hpsa_set_bus_target_lun(this_device
,
1834 tmpdevice
->bus
, tmpdevice
->target
, 0);
1835 set_bit(tmpdevice
->target
, lunzerobits
);
1840 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
1841 * logdev. The number of luns in physdev and logdev are returned in
1842 * *nphysicals and *nlogicals, respectively.
1843 * Returns 0 on success, -1 otherwise.
1845 static int hpsa_gather_lun_info(struct ctlr_info
*h
,
1847 struct ReportLUNdata
*physdev
, u32
*nphysicals
,
1848 struct ReportLUNdata
*logdev
, u32
*nlogicals
)
1850 if (hpsa_scsi_do_report_phys_luns(h
, physdev
, reportlunsize
, 0)) {
1851 dev_err(&h
->pdev
->dev
, "report physical LUNs failed.\n");
1854 *nphysicals
= be32_to_cpu(*((__be32
*)physdev
->LUNListLength
)) / 8;
1855 if (*nphysicals
> HPSA_MAX_PHYS_LUN
) {
1856 dev_warn(&h
->pdev
->dev
, "maximum physical LUNs (%d) exceeded."
1857 " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN
,
1858 *nphysicals
- HPSA_MAX_PHYS_LUN
);
1859 *nphysicals
= HPSA_MAX_PHYS_LUN
;
1861 if (hpsa_scsi_do_report_log_luns(h
, logdev
, reportlunsize
)) {
1862 dev_err(&h
->pdev
->dev
, "report logical LUNs failed.\n");
1865 *nlogicals
= be32_to_cpu(*((__be32
*) logdev
->LUNListLength
)) / 8;
1866 /* Reject Logicals in excess of our max capability. */
1867 if (*nlogicals
> HPSA_MAX_LUN
) {
1868 dev_warn(&h
->pdev
->dev
,
1869 "maximum logical LUNs (%d) exceeded. "
1870 "%d LUNs ignored.\n", HPSA_MAX_LUN
,
1871 *nlogicals
- HPSA_MAX_LUN
);
1872 *nlogicals
= HPSA_MAX_LUN
;
1874 if (*nlogicals
+ *nphysicals
> HPSA_MAX_PHYS_LUN
) {
1875 dev_warn(&h
->pdev
->dev
,
1876 "maximum logical + physical LUNs (%d) exceeded. "
1877 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN
,
1878 *nphysicals
+ *nlogicals
- HPSA_MAX_PHYS_LUN
);
1879 *nlogicals
= HPSA_MAX_PHYS_LUN
- *nphysicals
;
1884 u8
*figure_lunaddrbytes(struct ctlr_info
*h
, int raid_ctlr_position
, int i
,
1885 int nphysicals
, int nlogicals
, struct ReportLUNdata
*physdev_list
,
1886 struct ReportLUNdata
*logdev_list
)
1888 /* Helper function, figure out where the LUN ID info is coming from
1889 * given index i, lists of physical and logical devices, where in
1890 * the list the raid controller is supposed to appear (first or last)
1893 int logicals_start
= nphysicals
+ (raid_ctlr_position
== 0);
1894 int last_device
= nphysicals
+ nlogicals
+ (raid_ctlr_position
== 0);
1896 if (i
== raid_ctlr_position
)
1897 return RAID_CTLR_LUNID
;
1899 if (i
< logicals_start
)
1900 return &physdev_list
->LUN
[i
- (raid_ctlr_position
== 0)][0];
1902 if (i
< last_device
)
1903 return &logdev_list
->LUN
[i
- nphysicals
-
1904 (raid_ctlr_position
== 0)][0];
1909 static void hpsa_update_scsi_devices(struct ctlr_info
*h
, int hostno
)
1911 /* the idea here is we could get notified
1912 * that some devices have changed, so we do a report
1913 * physical luns and report logical luns cmd, and adjust
1914 * our list of devices accordingly.
1916 * The scsi3addr's of devices won't change so long as the
1917 * adapter is not reset. That means we can rescan and
1918 * tell which devices we already know about, vs. new
1919 * devices, vs. disappearing devices.
1921 struct ReportLUNdata
*physdev_list
= NULL
;
1922 struct ReportLUNdata
*logdev_list
= NULL
;
1925 u32 ndev_allocated
= 0;
1926 struct hpsa_scsi_dev_t
**currentsd
, *this_device
, *tmpdevice
;
1928 int reportlunsize
= sizeof(*physdev_list
) + HPSA_MAX_PHYS_LUN
* 8;
1929 int i
, n_ext_target_devs
, ndevs_to_allocate
;
1930 int raid_ctlr_position
;
1931 DECLARE_BITMAP(lunzerobits
, MAX_EXT_TARGETS
);
1933 currentsd
= kzalloc(sizeof(*currentsd
) * HPSA_MAX_DEVICES
, GFP_KERNEL
);
1934 physdev_list
= kzalloc(reportlunsize
, GFP_KERNEL
);
1935 logdev_list
= kzalloc(reportlunsize
, GFP_KERNEL
);
1936 tmpdevice
= kzalloc(sizeof(*tmpdevice
), GFP_KERNEL
);
1938 if (!currentsd
|| !physdev_list
|| !logdev_list
|| !tmpdevice
) {
1939 dev_err(&h
->pdev
->dev
, "out of memory\n");
1942 memset(lunzerobits
, 0, sizeof(lunzerobits
));
1944 if (hpsa_gather_lun_info(h
, reportlunsize
, physdev_list
, &nphysicals
,
1945 logdev_list
, &nlogicals
))
1948 /* We might see up to the maximum number of logical and physical disks
1949 * plus external target devices, and a device for the local RAID
1952 ndevs_to_allocate
= nphysicals
+ nlogicals
+ MAX_EXT_TARGETS
+ 1;
1954 /* Allocate the per device structures */
1955 for (i
= 0; i
< ndevs_to_allocate
; i
++) {
1956 if (i
>= HPSA_MAX_DEVICES
) {
1957 dev_warn(&h
->pdev
->dev
, "maximum devices (%d) exceeded."
1958 " %d devices ignored.\n", HPSA_MAX_DEVICES
,
1959 ndevs_to_allocate
- HPSA_MAX_DEVICES
);
1963 currentsd
[i
] = kzalloc(sizeof(*currentsd
[i
]), GFP_KERNEL
);
1964 if (!currentsd
[i
]) {
1965 dev_warn(&h
->pdev
->dev
, "out of memory at %s:%d\n",
1966 __FILE__
, __LINE__
);
1972 if (unlikely(is_scsi_rev_5(h
)))
1973 raid_ctlr_position
= 0;
1975 raid_ctlr_position
= nphysicals
+ nlogicals
;
1977 /* adjust our table of devices */
1978 n_ext_target_devs
= 0;
1979 for (i
= 0; i
< nphysicals
+ nlogicals
+ 1; i
++) {
1980 u8
*lunaddrbytes
, is_OBDR
= 0;
1982 /* Figure out where the LUN ID info is coming from */
1983 lunaddrbytes
= figure_lunaddrbytes(h
, raid_ctlr_position
,
1984 i
, nphysicals
, nlogicals
, physdev_list
, logdev_list
);
1985 /* skip masked physical devices. */
1986 if (lunaddrbytes
[3] & 0xC0 &&
1987 i
< nphysicals
+ (raid_ctlr_position
== 0))
1990 /* Get device type, vendor, model, device id */
1991 if (hpsa_update_device_info(h
, lunaddrbytes
, tmpdevice
,
1993 continue; /* skip it if we can't talk to it. */
1994 figure_bus_target_lun(h
, lunaddrbytes
, tmpdevice
);
1995 this_device
= currentsd
[ncurrent
];
1998 * For external target devices, we have to insert a LUN 0 which
1999 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
2000 * is nonetheless an enclosure device there. We have to
2001 * present that otherwise linux won't find anything if
2002 * there is no lun 0.
2004 if (add_ext_target_dev(h
, tmpdevice
, this_device
,
2005 lunaddrbytes
, lunzerobits
,
2006 &n_ext_target_devs
)) {
2008 this_device
= currentsd
[ncurrent
];
2011 *this_device
= *tmpdevice
;
2013 switch (this_device
->devtype
) {
2015 /* We don't *really* support actual CD-ROM devices,
2016 * just "One Button Disaster Recovery" tape drive
2017 * which temporarily pretends to be a CD-ROM drive.
2018 * So we check that the device is really an OBDR tape
2019 * device by checking for "$DR-10" in bytes 43-48 of
2031 case TYPE_MEDIUM_CHANGER
:
2035 /* Only present the Smartarray HBA as a RAID controller.
2036 * If it's a RAID controller other than the HBA itself
2037 * (an external RAID controller, MSA500 or similar)
2040 if (!is_hba_lunid(lunaddrbytes
))
2047 if (ncurrent
>= HPSA_MAX_DEVICES
)
2050 adjust_hpsa_scsi_table(h
, hostno
, currentsd
, ncurrent
);
2053 for (i
= 0; i
< ndev_allocated
; i
++)
2054 kfree(currentsd
[i
]);
2056 kfree(physdev_list
);
2060 /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
2061 * dma mapping and fills in the scatter gather entries of the
2064 static int hpsa_scatter_gather(struct ctlr_info
*h
,
2065 struct CommandList
*cp
,
2066 struct scsi_cmnd
*cmd
)
2069 struct scatterlist
*sg
;
2071 int use_sg
, i
, sg_index
, chained
;
2072 struct SGDescriptor
*curr_sg
;
2074 BUG_ON(scsi_sg_count(cmd
) > h
->maxsgentries
);
2076 use_sg
= scsi_dma_map(cmd
);
2081 goto sglist_finished
;
2086 scsi_for_each_sg(cmd
, sg
, use_sg
, i
) {
2087 if (i
== h
->max_cmd_sg_entries
- 1 &&
2088 use_sg
> h
->max_cmd_sg_entries
) {
2090 curr_sg
= h
->cmd_sg_list
[cp
->cmdindex
];
2093 addr64
= (u64
) sg_dma_address(sg
);
2094 len
= sg_dma_len(sg
);
2095 curr_sg
->Addr
.lower
= (u32
) (addr64
& 0x0FFFFFFFFULL
);
2096 curr_sg
->Addr
.upper
= (u32
) ((addr64
>> 32) & 0x0FFFFFFFFULL
);
2098 curr_sg
->Ext
= 0; /* we are not chaining */
2102 if (use_sg
+ chained
> h
->maxSG
)
2103 h
->maxSG
= use_sg
+ chained
;
2106 cp
->Header
.SGList
= h
->max_cmd_sg_entries
;
2107 cp
->Header
.SGTotal
= (u16
) (use_sg
+ 1);
2108 hpsa_map_sg_chain_block(h
, cp
);
2114 cp
->Header
.SGList
= (u8
) use_sg
; /* no. SGs contig in this cmd */
2115 cp
->Header
.SGTotal
= (u16
) use_sg
; /* total sgs in this cmd list */
2120 static int hpsa_scsi_queue_command_lck(struct scsi_cmnd
*cmd
,
2121 void (*done
)(struct scsi_cmnd
*))
2123 struct ctlr_info
*h
;
2124 struct hpsa_scsi_dev_t
*dev
;
2125 unsigned char scsi3addr
[8];
2126 struct CommandList
*c
;
2127 unsigned long flags
;
2129 /* Get the ptr to our adapter structure out of cmd->host. */
2130 h
= sdev_to_hba(cmd
->device
);
2131 dev
= cmd
->device
->hostdata
;
2133 cmd
->result
= DID_NO_CONNECT
<< 16;
2137 memcpy(scsi3addr
, dev
->scsi3addr
, sizeof(scsi3addr
));
2139 spin_lock_irqsave(&h
->lock
, flags
);
2140 if (unlikely(h
->lockup_detected
)) {
2141 spin_unlock_irqrestore(&h
->lock
, flags
);
2142 cmd
->result
= DID_ERROR
<< 16;
2146 spin_unlock_irqrestore(&h
->lock
, flags
);
2148 if (c
== NULL
) { /* trouble... */
2149 dev_err(&h
->pdev
->dev
, "cmd_alloc returned NULL!\n");
2150 return SCSI_MLQUEUE_HOST_BUSY
;
2153 /* Fill in the command list header */
2155 cmd
->scsi_done
= done
; /* save this for use by completion code */
2157 /* save c in case we have to abort it */
2158 cmd
->host_scribble
= (unsigned char *) c
;
2160 c
->cmd_type
= CMD_SCSI
;
2162 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
2163 memcpy(&c
->Header
.LUN
.LunAddrBytes
[0], &scsi3addr
[0], 8);
2164 c
->Header
.Tag
.lower
= (c
->cmdindex
<< DIRECT_LOOKUP_SHIFT
);
2165 c
->Header
.Tag
.lower
|= DIRECT_LOOKUP_BIT
;
2167 /* Fill in the request block... */
2169 c
->Request
.Timeout
= 0;
2170 memset(c
->Request
.CDB
, 0, sizeof(c
->Request
.CDB
));
2171 BUG_ON(cmd
->cmd_len
> sizeof(c
->Request
.CDB
));
2172 c
->Request
.CDBLen
= cmd
->cmd_len
;
2173 memcpy(c
->Request
.CDB
, cmd
->cmnd
, cmd
->cmd_len
);
2174 c
->Request
.Type
.Type
= TYPE_CMD
;
2175 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2176 switch (cmd
->sc_data_direction
) {
2178 c
->Request
.Type
.Direction
= XFER_WRITE
;
2180 case DMA_FROM_DEVICE
:
2181 c
->Request
.Type
.Direction
= XFER_READ
;
2184 c
->Request
.Type
.Direction
= XFER_NONE
;
2186 case DMA_BIDIRECTIONAL
:
2187 /* This can happen if a buggy application does a scsi passthru
2188 * and sets both inlen and outlen to non-zero. ( see
2189 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
2192 c
->Request
.Type
.Direction
= XFER_RSVD
;
2193 /* This is technically wrong, and hpsa controllers should
2194 * reject it with CMD_INVALID, which is the most correct
2195 * response, but non-fibre backends appear to let it
2196 * slide by, and give the same results as if this field
2197 * were set correctly. Either way is acceptable for
2198 * our purposes here.
2204 dev_err(&h
->pdev
->dev
, "unknown data direction: %d\n",
2205 cmd
->sc_data_direction
);
2210 if (hpsa_scatter_gather(h
, c
, cmd
) < 0) { /* Fill SG list */
2212 return SCSI_MLQUEUE_HOST_BUSY
;
2214 enqueue_cmd_and_start_io(h
, c
);
2215 /* the cmd'll come back via intr handler in complete_scsi_command() */
2219 static DEF_SCSI_QCMD(hpsa_scsi_queue_command
)
2221 static void hpsa_scan_start(struct Scsi_Host
*sh
)
2223 struct ctlr_info
*h
= shost_to_hba(sh
);
2224 unsigned long flags
;
2226 /* wait until any scan already in progress is finished. */
2228 spin_lock_irqsave(&h
->scan_lock
, flags
);
2229 if (h
->scan_finished
)
2231 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2232 wait_event(h
->scan_wait_queue
, h
->scan_finished
);
2233 /* Note: We don't need to worry about a race between this
2234 * thread and driver unload because the midlayer will
2235 * have incremented the reference count, so unload won't
2236 * happen if we're in here.
2239 h
->scan_finished
= 0; /* mark scan as in progress */
2240 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2242 hpsa_update_scsi_devices(h
, h
->scsi_host
->host_no
);
2244 spin_lock_irqsave(&h
->scan_lock
, flags
);
2245 h
->scan_finished
= 1; /* mark scan as finished. */
2246 wake_up_all(&h
->scan_wait_queue
);
2247 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2250 static int hpsa_scan_finished(struct Scsi_Host
*sh
,
2251 unsigned long elapsed_time
)
2253 struct ctlr_info
*h
= shost_to_hba(sh
);
2254 unsigned long flags
;
2257 spin_lock_irqsave(&h
->scan_lock
, flags
);
2258 finished
= h
->scan_finished
;
2259 spin_unlock_irqrestore(&h
->scan_lock
, flags
);
2263 static int hpsa_change_queue_depth(struct scsi_device
*sdev
,
2264 int qdepth
, int reason
)
2266 struct ctlr_info
*h
= sdev_to_hba(sdev
);
2268 if (reason
!= SCSI_QDEPTH_DEFAULT
)
2274 if (qdepth
> h
->nr_cmds
)
2275 qdepth
= h
->nr_cmds
;
2276 scsi_adjust_queue_depth(sdev
, scsi_get_tag_type(sdev
), qdepth
);
2277 return sdev
->queue_depth
;
2280 static void hpsa_unregister_scsi(struct ctlr_info
*h
)
2282 /* we are being forcibly unloaded, and may not refuse. */
2283 scsi_remove_host(h
->scsi_host
);
2284 scsi_host_put(h
->scsi_host
);
2285 h
->scsi_host
= NULL
;
2288 static int hpsa_register_scsi(struct ctlr_info
*h
)
2290 struct Scsi_Host
*sh
;
2293 sh
= scsi_host_alloc(&hpsa_driver_template
, sizeof(h
));
2300 sh
->max_channel
= 3;
2301 sh
->max_cmd_len
= MAX_COMMAND_SIZE
;
2302 sh
->max_lun
= HPSA_MAX_LUN
;
2303 sh
->max_id
= HPSA_MAX_LUN
;
2304 sh
->can_queue
= h
->nr_cmds
;
2305 sh
->cmd_per_lun
= h
->nr_cmds
;
2306 sh
->sg_tablesize
= h
->maxsgentries
;
2308 sh
->hostdata
[0] = (unsigned long) h
;
2309 sh
->irq
= h
->intr
[h
->intr_mode
];
2310 sh
->unique_id
= sh
->irq
;
2311 error
= scsi_add_host(sh
, &h
->pdev
->dev
);
2318 dev_err(&h
->pdev
->dev
, "%s: scsi_add_host"
2319 " failed for controller %d\n", __func__
, h
->ctlr
);
2323 dev_err(&h
->pdev
->dev
, "%s: scsi_host_alloc"
2324 " failed for controller %d\n", __func__
, h
->ctlr
);
2328 static int wait_for_device_to_become_ready(struct ctlr_info
*h
,
2329 unsigned char lunaddr
[])
2333 int waittime
= 1; /* seconds */
2334 struct CommandList
*c
;
2336 c
= cmd_special_alloc(h
);
2338 dev_warn(&h
->pdev
->dev
, "out of memory in "
2339 "wait_for_device_to_become_ready.\n");
2343 /* Send test unit ready until device ready, or give up. */
2344 while (count
< HPSA_TUR_RETRY_LIMIT
) {
2346 /* Wait for a bit. do this first, because if we send
2347 * the TUR right away, the reset will just abort it.
2349 msleep(1000 * waittime
);
2352 /* Increase wait time with each try, up to a point. */
2353 if (waittime
< HPSA_MAX_WAIT_INTERVAL_SECS
)
2354 waittime
= waittime
* 2;
2356 /* Send the Test Unit Ready */
2357 fill_cmd(c
, TEST_UNIT_READY
, h
, NULL
, 0, 0, lunaddr
, TYPE_CMD
);
2358 hpsa_scsi_do_simple_cmd_core(h
, c
);
2359 /* no unmap needed here because no data xfer. */
2361 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2364 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
2365 c
->err_info
->ScsiStatus
== SAM_STAT_CHECK_CONDITION
&&
2366 (c
->err_info
->SenseInfo
[2] == NO_SENSE
||
2367 c
->err_info
->SenseInfo
[2] == UNIT_ATTENTION
))
2370 dev_warn(&h
->pdev
->dev
, "waiting %d secs "
2371 "for device to become ready.\n", waittime
);
2372 rc
= 1; /* device not ready. */
2376 dev_warn(&h
->pdev
->dev
, "giving up on device.\n");
2378 dev_warn(&h
->pdev
->dev
, "device is ready.\n");
2380 cmd_special_free(h
, c
);
2384 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
2385 * complaining. Doing a host- or bus-reset can't do anything good here.
2387 static int hpsa_eh_device_reset_handler(struct scsi_cmnd
*scsicmd
)
2390 struct ctlr_info
*h
;
2391 struct hpsa_scsi_dev_t
*dev
;
2393 /* find the controller to which the command to be aborted was sent */
2394 h
= sdev_to_hba(scsicmd
->device
);
2395 if (h
== NULL
) /* paranoia */
2397 dev
= scsicmd
->device
->hostdata
;
2399 dev_err(&h
->pdev
->dev
, "hpsa_eh_device_reset_handler: "
2400 "device lookup failed.\n");
2403 dev_warn(&h
->pdev
->dev
, "resetting device %d:%d:%d:%d\n",
2404 h
->scsi_host
->host_no
, dev
->bus
, dev
->target
, dev
->lun
);
2405 /* send a reset to the SCSI LUN which the command was sent to */
2406 rc
= hpsa_send_reset(h
, dev
->scsi3addr
);
2407 if (rc
== 0 && wait_for_device_to_become_ready(h
, dev
->scsi3addr
) == 0)
2410 dev_warn(&h
->pdev
->dev
, "resetting device failed.\n");
2414 static void swizzle_abort_tag(u8
*tag
)
2418 memcpy(original_tag
, tag
, 8);
2419 tag
[0] = original_tag
[3];
2420 tag
[1] = original_tag
[2];
2421 tag
[2] = original_tag
[1];
2422 tag
[3] = original_tag
[0];
2423 tag
[4] = original_tag
[7];
2424 tag
[5] = original_tag
[6];
2425 tag
[6] = original_tag
[5];
2426 tag
[7] = original_tag
[4];
2429 static int hpsa_send_abort(struct ctlr_info
*h
, unsigned char *scsi3addr
,
2430 struct CommandList
*abort
, int swizzle
)
2433 struct CommandList
*c
;
2434 struct ErrorInfo
*ei
;
2436 c
= cmd_special_alloc(h
);
2437 if (c
== NULL
) { /* trouble... */
2438 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
2442 fill_cmd(c
, HPSA_ABORT_MSG
, h
, abort
, 0, 0, scsi3addr
, TYPE_MSG
);
2444 swizzle_abort_tag(&c
->Request
.CDB
[4]);
2445 hpsa_scsi_do_simple_cmd_core(h
, c
);
2446 dev_dbg(&h
->pdev
->dev
, "%s: Tag:0x%08x:%08x: do_simple_cmd_core completed.\n",
2447 __func__
, abort
->Header
.Tag
.upper
, abort
->Header
.Tag
.lower
);
2448 /* no unmap needed here because no data xfer. */
2451 switch (ei
->CommandStatus
) {
2454 case CMD_UNABORTABLE
: /* Very common, don't make noise. */
2458 dev_dbg(&h
->pdev
->dev
, "%s: Tag:0x%08x:%08x: interpreting error.\n",
2459 __func__
, abort
->Header
.Tag
.upper
,
2460 abort
->Header
.Tag
.lower
);
2461 hpsa_scsi_interpret_error(c
);
2465 cmd_special_free(h
, c
);
2466 dev_dbg(&h
->pdev
->dev
, "%s: Tag:0x%08x:%08x: Finished.\n", __func__
,
2467 abort
->Header
.Tag
.upper
, abort
->Header
.Tag
.lower
);
2472 * hpsa_find_cmd_in_queue
2474 * Used to determine whether a command (find) is still present
2475 * in queue_head. Optionally excludes the last element of queue_head.
2477 * This is used to avoid unnecessary aborts. Commands in h->reqQ have
2478 * not yet been submitted, and so can be aborted by the driver without
2479 * sending an abort to the hardware.
2481 * Returns pointer to command if found in queue, NULL otherwise.
2483 static struct CommandList
*hpsa_find_cmd_in_queue(struct ctlr_info
*h
,
2484 struct scsi_cmnd
*find
, struct list_head
*queue_head
)
2486 unsigned long flags
;
2487 struct CommandList
*c
= NULL
; /* ptr into cmpQ */
2491 spin_lock_irqsave(&h
->lock
, flags
);
2492 list_for_each_entry(c
, queue_head
, list
) {
2493 if (c
->scsi_cmd
== NULL
) /* e.g.: passthru ioctl */
2495 if (c
->scsi_cmd
== find
) {
2496 spin_unlock_irqrestore(&h
->lock
, flags
);
2500 spin_unlock_irqrestore(&h
->lock
, flags
);
2504 static struct CommandList
*hpsa_find_cmd_in_queue_by_tag(struct ctlr_info
*h
,
2505 u8
*tag
, struct list_head
*queue_head
)
2507 unsigned long flags
;
2508 struct CommandList
*c
;
2510 spin_lock_irqsave(&h
->lock
, flags
);
2511 list_for_each_entry(c
, queue_head
, list
) {
2512 if (memcmp(&c
->Header
.Tag
, tag
, 8) != 0)
2514 spin_unlock_irqrestore(&h
->lock
, flags
);
2517 spin_unlock_irqrestore(&h
->lock
, flags
);
2521 /* Some Smart Arrays need the abort tag swizzled, and some don't. It's hard to
2522 * tell which kind we're dealing with, so we send the abort both ways. There
2523 * shouldn't be any collisions between swizzled and unswizzled tags due to the
2524 * way we construct our tags but we check anyway in case the assumptions which
2525 * make this true someday become false.
2527 static int hpsa_send_abort_both_ways(struct ctlr_info
*h
,
2528 unsigned char *scsi3addr
, struct CommandList
*abort
)
2531 struct CommandList
*c
;
2532 int rc
= 0, rc2
= 0;
2534 /* we do not expect to find the swizzled tag in our queue, but
2535 * check anyway just to be sure the assumptions which make this
2536 * the case haven't become wrong.
2538 memcpy(swizzled_tag
, &abort
->Request
.CDB
[4], 8);
2539 swizzle_abort_tag(swizzled_tag
);
2540 c
= hpsa_find_cmd_in_queue_by_tag(h
, swizzled_tag
, &h
->cmpQ
);
2542 dev_warn(&h
->pdev
->dev
, "Unexpectedly found byte-swapped tag in completion queue.\n");
2543 return hpsa_send_abort(h
, scsi3addr
, abort
, 0);
2545 rc
= hpsa_send_abort(h
, scsi3addr
, abort
, 0);
2547 /* if the command is still in our queue, we can't conclude that it was
2548 * aborted (it might have just completed normally) but in any case
2549 * we don't need to try to abort it another way.
2551 c
= hpsa_find_cmd_in_queue(h
, abort
->scsi_cmd
, &h
->cmpQ
);
2553 rc2
= hpsa_send_abort(h
, scsi3addr
, abort
, 1);
2557 /* Send an abort for the specified command.
2558 * If the device and controller support it,
2559 * send a task abort request.
2561 static int hpsa_eh_abort_handler(struct scsi_cmnd
*sc
)
2565 struct ctlr_info
*h
;
2566 struct hpsa_scsi_dev_t
*dev
;
2567 struct CommandList
*abort
; /* pointer to command to be aborted */
2568 struct CommandList
*found
;
2569 struct scsi_cmnd
*as
; /* ptr to scsi cmd inside aborted command. */
2570 char msg
[256]; /* For debug messaging. */
2573 /* Find the controller of the command to be aborted */
2574 h
= sdev_to_hba(sc
->device
);
2576 "ABORT REQUEST FAILED, Controller lookup failed.\n"))
2579 /* Check that controller supports some kind of task abort */
2580 if (!(HPSATMF_PHYS_TASK_ABORT
& h
->TMFSupportFlags
) &&
2581 !(HPSATMF_LOG_TASK_ABORT
& h
->TMFSupportFlags
))
2584 memset(msg
, 0, sizeof(msg
));
2585 ml
+= sprintf(msg
+ml
, "ABORT REQUEST on C%d:B%d:T%d:L%d ",
2586 h
->scsi_host
->host_no
, sc
->device
->channel
,
2587 sc
->device
->id
, sc
->device
->lun
);
2589 /* Find the device of the command to be aborted */
2590 dev
= sc
->device
->hostdata
;
2592 dev_err(&h
->pdev
->dev
, "%s FAILED, Device lookup failed.\n",
2597 /* Get SCSI command to be aborted */
2598 abort
= (struct CommandList
*) sc
->host_scribble
;
2599 if (abort
== NULL
) {
2600 dev_err(&h
->pdev
->dev
, "%s FAILED, Command to abort is NULL.\n",
2605 ml
+= sprintf(msg
+ml
, "Tag:0x%08x:%08x ",
2606 abort
->Header
.Tag
.upper
, abort
->Header
.Tag
.lower
);
2607 as
= (struct scsi_cmnd
*) abort
->scsi_cmd
;
2609 ml
+= sprintf(msg
+ml
, "Command:0x%x SN:0x%lx ",
2610 as
->cmnd
[0], as
->serial_number
);
2611 dev_dbg(&h
->pdev
->dev
, "%s\n", msg
);
2612 dev_warn(&h
->pdev
->dev
, "Abort request on C%d:B%d:T%d:L%d\n",
2613 h
->scsi_host
->host_no
, dev
->bus
, dev
->target
, dev
->lun
);
2615 /* Search reqQ to See if command is queued but not submitted,
2616 * if so, complete the command with aborted status and remove
2619 found
= hpsa_find_cmd_in_queue(h
, sc
, &h
->reqQ
);
2621 found
->err_info
->CommandStatus
= CMD_ABORTED
;
2623 dev_info(&h
->pdev
->dev
, "%s Request SUCCEEDED (driver queue).\n",
2628 /* not in reqQ, if also not in cmpQ, must have already completed */
2629 found
= hpsa_find_cmd_in_queue(h
, sc
, &h
->cmpQ
);
2631 dev_dbg(&h
->pdev
->dev
, "%s Request SUCCEEDED (not known to driver).\n",
2637 * Command is in flight, or possibly already completed
2638 * by the firmware (but not to the scsi mid layer) but we can't
2639 * distinguish which. Send the abort down.
2641 rc
= hpsa_send_abort_both_ways(h
, dev
->scsi3addr
, abort
);
2643 dev_dbg(&h
->pdev
->dev
, "%s Request FAILED.\n", msg
);
2644 dev_warn(&h
->pdev
->dev
, "FAILED abort on device C%d:B%d:T%d:L%d\n",
2645 h
->scsi_host
->host_no
,
2646 dev
->bus
, dev
->target
, dev
->lun
);
2649 dev_info(&h
->pdev
->dev
, "%s REQUEST SUCCEEDED.\n", msg
);
2651 /* If the abort(s) above completed and actually aborted the
2652 * command, then the command to be aborted should already be
2653 * completed. If not, wait around a bit more to see if they
2654 * manage to complete normally.
2656 #define ABORT_COMPLETE_WAIT_SECS 30
2657 for (i
= 0; i
< ABORT_COMPLETE_WAIT_SECS
* 10; i
++) {
2658 found
= hpsa_find_cmd_in_queue(h
, sc
, &h
->cmpQ
);
2663 dev_warn(&h
->pdev
->dev
, "%s FAILED. Aborted command has not completed after %d seconds.\n",
2664 msg
, ABORT_COMPLETE_WAIT_SECS
);
2670 * For operations that cannot sleep, a command block is allocated at init,
2671 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
2672 * which ones are free or in use. Lock must be held when calling this.
2673 * cmd_free() is the complement.
2675 static struct CommandList
*cmd_alloc(struct ctlr_info
*h
)
2677 struct CommandList
*c
;
2679 union u64bit temp64
;
2680 dma_addr_t cmd_dma_handle
, err_dma_handle
;
2681 unsigned long flags
;
2683 spin_lock_irqsave(&h
->lock
, flags
);
2685 i
= find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
);
2686 if (i
== h
->nr_cmds
) {
2687 spin_unlock_irqrestore(&h
->lock
, flags
);
2690 } while (test_and_set_bit
2691 (i
& (BITS_PER_LONG
- 1),
2692 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
)) != 0);
2694 spin_unlock_irqrestore(&h
->lock
, flags
);
2696 c
= h
->cmd_pool
+ i
;
2697 memset(c
, 0, sizeof(*c
));
2698 cmd_dma_handle
= h
->cmd_pool_dhandle
2700 c
->err_info
= h
->errinfo_pool
+ i
;
2701 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
2702 err_dma_handle
= h
->errinfo_pool_dhandle
2703 + i
* sizeof(*c
->err_info
);
2707 INIT_LIST_HEAD(&c
->list
);
2708 c
->busaddr
= (u32
) cmd_dma_handle
;
2709 temp64
.val
= (u64
) err_dma_handle
;
2710 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
2711 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
2712 c
->ErrDesc
.Len
= sizeof(*c
->err_info
);
2718 /* For operations that can wait for kmalloc to possibly sleep,
2719 * this routine can be called. Lock need not be held to call
2720 * cmd_special_alloc. cmd_special_free() is the complement.
2722 static struct CommandList
*cmd_special_alloc(struct ctlr_info
*h
)
2724 struct CommandList
*c
;
2725 union u64bit temp64
;
2726 dma_addr_t cmd_dma_handle
, err_dma_handle
;
2728 c
= pci_alloc_consistent(h
->pdev
, sizeof(*c
), &cmd_dma_handle
);
2731 memset(c
, 0, sizeof(*c
));
2735 c
->err_info
= pci_alloc_consistent(h
->pdev
, sizeof(*c
->err_info
),
2738 if (c
->err_info
== NULL
) {
2739 pci_free_consistent(h
->pdev
,
2740 sizeof(*c
), c
, cmd_dma_handle
);
2743 memset(c
->err_info
, 0, sizeof(*c
->err_info
));
2745 INIT_LIST_HEAD(&c
->list
);
2746 c
->busaddr
= (u32
) cmd_dma_handle
;
2747 temp64
.val
= (u64
) err_dma_handle
;
2748 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
2749 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
2750 c
->ErrDesc
.Len
= sizeof(*c
->err_info
);
2756 static void cmd_free(struct ctlr_info
*h
, struct CommandList
*c
)
2759 unsigned long flags
;
2761 i
= c
- h
->cmd_pool
;
2762 spin_lock_irqsave(&h
->lock
, flags
);
2763 clear_bit(i
& (BITS_PER_LONG
- 1),
2764 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
));
2766 spin_unlock_irqrestore(&h
->lock
, flags
);
2769 static void cmd_special_free(struct ctlr_info
*h
, struct CommandList
*c
)
2771 union u64bit temp64
;
2773 temp64
.val32
.lower
= c
->ErrDesc
.Addr
.lower
;
2774 temp64
.val32
.upper
= c
->ErrDesc
.Addr
.upper
;
2775 pci_free_consistent(h
->pdev
, sizeof(*c
->err_info
),
2776 c
->err_info
, (dma_addr_t
) temp64
.val
);
2777 pci_free_consistent(h
->pdev
, sizeof(*c
),
2778 c
, (dma_addr_t
) (c
->busaddr
& DIRECT_LOOKUP_MASK
));
2781 #ifdef CONFIG_COMPAT
2783 static int hpsa_ioctl32_passthru(struct scsi_device
*dev
, int cmd
, void *arg
)
2785 IOCTL32_Command_struct __user
*arg32
=
2786 (IOCTL32_Command_struct __user
*) arg
;
2787 IOCTL_Command_struct arg64
;
2788 IOCTL_Command_struct __user
*p
= compat_alloc_user_space(sizeof(arg64
));
2792 memset(&arg64
, 0, sizeof(arg64
));
2794 err
|= copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
2795 sizeof(arg64
.LUN_info
));
2796 err
|= copy_from_user(&arg64
.Request
, &arg32
->Request
,
2797 sizeof(arg64
.Request
));
2798 err
|= copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
2799 sizeof(arg64
.error_info
));
2800 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
2801 err
|= get_user(cp
, &arg32
->buf
);
2802 arg64
.buf
= compat_ptr(cp
);
2803 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
2808 err
= hpsa_ioctl(dev
, CCISS_PASSTHRU
, (void *)p
);
2811 err
|= copy_in_user(&arg32
->error_info
, &p
->error_info
,
2812 sizeof(arg32
->error_info
));
2818 static int hpsa_ioctl32_big_passthru(struct scsi_device
*dev
,
2821 BIG_IOCTL32_Command_struct __user
*arg32
=
2822 (BIG_IOCTL32_Command_struct __user
*) arg
;
2823 BIG_IOCTL_Command_struct arg64
;
2824 BIG_IOCTL_Command_struct __user
*p
=
2825 compat_alloc_user_space(sizeof(arg64
));
2829 memset(&arg64
, 0, sizeof(arg64
));
2831 err
|= copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
2832 sizeof(arg64
.LUN_info
));
2833 err
|= copy_from_user(&arg64
.Request
, &arg32
->Request
,
2834 sizeof(arg64
.Request
));
2835 err
|= copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
2836 sizeof(arg64
.error_info
));
2837 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
2838 err
|= get_user(arg64
.malloc_size
, &arg32
->malloc_size
);
2839 err
|= get_user(cp
, &arg32
->buf
);
2840 arg64
.buf
= compat_ptr(cp
);
2841 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
2846 err
= hpsa_ioctl(dev
, CCISS_BIG_PASSTHRU
, (void *)p
);
2849 err
|= copy_in_user(&arg32
->error_info
, &p
->error_info
,
2850 sizeof(arg32
->error_info
));
2856 static int hpsa_compat_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
)
2859 case CCISS_GETPCIINFO
:
2860 case CCISS_GETINTINFO
:
2861 case CCISS_SETINTINFO
:
2862 case CCISS_GETNODENAME
:
2863 case CCISS_SETNODENAME
:
2864 case CCISS_GETHEARTBEAT
:
2865 case CCISS_GETBUSTYPES
:
2866 case CCISS_GETFIRMVER
:
2867 case CCISS_GETDRIVVER
:
2868 case CCISS_REVALIDVOLS
:
2869 case CCISS_DEREGDISK
:
2870 case CCISS_REGNEWDISK
:
2872 case CCISS_RESCANDISK
:
2873 case CCISS_GETLUNINFO
:
2874 return hpsa_ioctl(dev
, cmd
, arg
);
2876 case CCISS_PASSTHRU32
:
2877 return hpsa_ioctl32_passthru(dev
, cmd
, arg
);
2878 case CCISS_BIG_PASSTHRU32
:
2879 return hpsa_ioctl32_big_passthru(dev
, cmd
, arg
);
2882 return -ENOIOCTLCMD
;
2887 static int hpsa_getpciinfo_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2889 struct hpsa_pci_info pciinfo
;
2893 pciinfo
.domain
= pci_domain_nr(h
->pdev
->bus
);
2894 pciinfo
.bus
= h
->pdev
->bus
->number
;
2895 pciinfo
.dev_fn
= h
->pdev
->devfn
;
2896 pciinfo
.board_id
= h
->board_id
;
2897 if (copy_to_user(argp
, &pciinfo
, sizeof(pciinfo
)))
2902 static int hpsa_getdrivver_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2904 DriverVer_type DriverVer
;
2905 unsigned char vmaj
, vmin
, vsubmin
;
2908 rc
= sscanf(HPSA_DRIVER_VERSION
, "%hhu.%hhu.%hhu",
2909 &vmaj
, &vmin
, &vsubmin
);
2911 dev_info(&h
->pdev
->dev
, "driver version string '%s' "
2912 "unrecognized.", HPSA_DRIVER_VERSION
);
2917 DriverVer
= (vmaj
<< 16) | (vmin
<< 8) | vsubmin
;
2920 if (copy_to_user(argp
, &DriverVer
, sizeof(DriverVer_type
)))
2925 static int hpsa_passthru_ioctl(struct ctlr_info
*h
, void __user
*argp
)
2927 IOCTL_Command_struct iocommand
;
2928 struct CommandList
*c
;
2930 union u64bit temp64
;
2934 if (!capable(CAP_SYS_RAWIO
))
2936 if (copy_from_user(&iocommand
, argp
, sizeof(iocommand
)))
2938 if ((iocommand
.buf_size
< 1) &&
2939 (iocommand
.Request
.Type
.Direction
!= XFER_NONE
)) {
2942 if (iocommand
.buf_size
> 0) {
2943 buff
= kmalloc(iocommand
.buf_size
, GFP_KERNEL
);
2946 if (iocommand
.Request
.Type
.Direction
== XFER_WRITE
) {
2947 /* Copy the data into the buffer we created */
2948 if (copy_from_user(buff
, iocommand
.buf
,
2949 iocommand
.buf_size
)) {
2954 memset(buff
, 0, iocommand
.buf_size
);
2957 c
= cmd_special_alloc(h
);
2962 /* Fill in the command type */
2963 c
->cmd_type
= CMD_IOCTL_PEND
;
2964 /* Fill in Command Header */
2965 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
2966 if (iocommand
.buf_size
> 0) { /* buffer to fill */
2967 c
->Header
.SGList
= 1;
2968 c
->Header
.SGTotal
= 1;
2969 } else { /* no buffers to fill */
2970 c
->Header
.SGList
= 0;
2971 c
->Header
.SGTotal
= 0;
2973 memcpy(&c
->Header
.LUN
, &iocommand
.LUN_info
, sizeof(c
->Header
.LUN
));
2974 /* use the kernel address the cmd block for tag */
2975 c
->Header
.Tag
.lower
= c
->busaddr
;
2977 /* Fill in Request block */
2978 memcpy(&c
->Request
, &iocommand
.Request
,
2979 sizeof(c
->Request
));
2981 /* Fill in the scatter gather information */
2982 if (iocommand
.buf_size
> 0) {
2983 temp64
.val
= pci_map_single(h
->pdev
, buff
,
2984 iocommand
.buf_size
, PCI_DMA_BIDIRECTIONAL
);
2985 c
->SG
[0].Addr
.lower
= temp64
.val32
.lower
;
2986 c
->SG
[0].Addr
.upper
= temp64
.val32
.upper
;
2987 c
->SG
[0].Len
= iocommand
.buf_size
;
2988 c
->SG
[0].Ext
= 0; /* we are not chaining*/
2990 hpsa_scsi_do_simple_cmd_core_if_no_lockup(h
, c
);
2991 if (iocommand
.buf_size
> 0)
2992 hpsa_pci_unmap(h
->pdev
, c
, 1, PCI_DMA_BIDIRECTIONAL
);
2993 check_ioctl_unit_attention(h
, c
);
2995 /* Copy the error information out */
2996 memcpy(&iocommand
.error_info
, c
->err_info
,
2997 sizeof(iocommand
.error_info
));
2998 if (copy_to_user(argp
, &iocommand
, sizeof(iocommand
))) {
3000 cmd_special_free(h
, c
);
3003 if (iocommand
.Request
.Type
.Direction
== XFER_READ
&&
3004 iocommand
.buf_size
> 0) {
3005 /* Copy the data out of the buffer we created */
3006 if (copy_to_user(iocommand
.buf
, buff
, iocommand
.buf_size
)) {
3008 cmd_special_free(h
, c
);
3013 cmd_special_free(h
, c
);
3017 static int hpsa_big_passthru_ioctl(struct ctlr_info
*h
, void __user
*argp
)
3019 BIG_IOCTL_Command_struct
*ioc
;
3020 struct CommandList
*c
;
3021 unsigned char **buff
= NULL
;
3022 int *buff_size
= NULL
;
3023 union u64bit temp64
;
3029 BYTE __user
*data_ptr
;
3033 if (!capable(CAP_SYS_RAWIO
))
3035 ioc
= (BIG_IOCTL_Command_struct
*)
3036 kmalloc(sizeof(*ioc
), GFP_KERNEL
);
3041 if (copy_from_user(ioc
, argp
, sizeof(*ioc
))) {
3045 if ((ioc
->buf_size
< 1) &&
3046 (ioc
->Request
.Type
.Direction
!= XFER_NONE
)) {
3050 /* Check kmalloc limits using all SGs */
3051 if (ioc
->malloc_size
> MAX_KMALLOC_SIZE
) {
3055 if (ioc
->buf_size
> ioc
->malloc_size
* SG_ENTRIES_IN_CMD
) {
3059 buff
= kzalloc(SG_ENTRIES_IN_CMD
* sizeof(char *), GFP_KERNEL
);
3064 buff_size
= kmalloc(SG_ENTRIES_IN_CMD
* sizeof(int), GFP_KERNEL
);
3069 left
= ioc
->buf_size
;
3070 data_ptr
= ioc
->buf
;
3072 sz
= (left
> ioc
->malloc_size
) ? ioc
->malloc_size
: left
;
3073 buff_size
[sg_used
] = sz
;
3074 buff
[sg_used
] = kmalloc(sz
, GFP_KERNEL
);
3075 if (buff
[sg_used
] == NULL
) {
3079 if (ioc
->Request
.Type
.Direction
== XFER_WRITE
) {
3080 if (copy_from_user(buff
[sg_used
], data_ptr
, sz
)) {
3085 memset(buff
[sg_used
], 0, sz
);
3090 c
= cmd_special_alloc(h
);
3095 c
->cmd_type
= CMD_IOCTL_PEND
;
3096 c
->Header
.ReplyQueue
= 0;
3097 c
->Header
.SGList
= c
->Header
.SGTotal
= sg_used
;
3098 memcpy(&c
->Header
.LUN
, &ioc
->LUN_info
, sizeof(c
->Header
.LUN
));
3099 c
->Header
.Tag
.lower
= c
->busaddr
;
3100 memcpy(&c
->Request
, &ioc
->Request
, sizeof(c
->Request
));
3101 if (ioc
->buf_size
> 0) {
3103 for (i
= 0; i
< sg_used
; i
++) {
3104 temp64
.val
= pci_map_single(h
->pdev
, buff
[i
],
3105 buff_size
[i
], PCI_DMA_BIDIRECTIONAL
);
3106 c
->SG
[i
].Addr
.lower
= temp64
.val32
.lower
;
3107 c
->SG
[i
].Addr
.upper
= temp64
.val32
.upper
;
3108 c
->SG
[i
].Len
= buff_size
[i
];
3109 /* we are not chaining */
3113 hpsa_scsi_do_simple_cmd_core_if_no_lockup(h
, c
);
3115 hpsa_pci_unmap(h
->pdev
, c
, sg_used
, PCI_DMA_BIDIRECTIONAL
);
3116 check_ioctl_unit_attention(h
, c
);
3117 /* Copy the error information out */
3118 memcpy(&ioc
->error_info
, c
->err_info
, sizeof(ioc
->error_info
));
3119 if (copy_to_user(argp
, ioc
, sizeof(*ioc
))) {
3120 cmd_special_free(h
, c
);
3124 if (ioc
->Request
.Type
.Direction
== XFER_READ
&& ioc
->buf_size
> 0) {
3125 /* Copy the data out of the buffer we created */
3126 BYTE __user
*ptr
= ioc
->buf
;
3127 for (i
= 0; i
< sg_used
; i
++) {
3128 if (copy_to_user(ptr
, buff
[i
], buff_size
[i
])) {
3129 cmd_special_free(h
, c
);
3133 ptr
+= buff_size
[i
];
3136 cmd_special_free(h
, c
);
3140 for (i
= 0; i
< sg_used
; i
++)
3149 static void check_ioctl_unit_attention(struct ctlr_info
*h
,
3150 struct CommandList
*c
)
3152 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
3153 c
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
)
3154 (void) check_for_unit_attention(h
, c
);
3159 static int hpsa_ioctl(struct scsi_device
*dev
, int cmd
, void *arg
)
3161 struct ctlr_info
*h
;
3162 void __user
*argp
= (void __user
*)arg
;
3164 h
= sdev_to_hba(dev
);
3167 case CCISS_DEREGDISK
:
3168 case CCISS_REGNEWDISK
:
3170 hpsa_scan_start(h
->scsi_host
);
3172 case CCISS_GETPCIINFO
:
3173 return hpsa_getpciinfo_ioctl(h
, argp
);
3174 case CCISS_GETDRIVVER
:
3175 return hpsa_getdrivver_ioctl(h
, argp
);
3176 case CCISS_PASSTHRU
:
3177 return hpsa_passthru_ioctl(h
, argp
);
3178 case CCISS_BIG_PASSTHRU
:
3179 return hpsa_big_passthru_ioctl(h
, argp
);
3185 static int __devinit
hpsa_send_host_reset(struct ctlr_info
*h
,
3186 unsigned char *scsi3addr
, u8 reset_type
)
3188 struct CommandList
*c
;
3193 fill_cmd(c
, HPSA_DEVICE_RESET_MSG
, h
, NULL
, 0, 0,
3194 RAID_CTLR_LUNID
, TYPE_MSG
);
3195 c
->Request
.CDB
[1] = reset_type
; /* fill_cmd defaults to target reset */
3197 enqueue_cmd_and_start_io(h
, c
);
3198 /* Don't wait for completion, the reset won't complete. Don't free
3199 * the command either. This is the last command we will send before
3200 * re-initializing everything, so it doesn't matter and won't leak.
3205 static void fill_cmd(struct CommandList
*c
, u8 cmd
, struct ctlr_info
*h
,
3206 void *buff
, size_t size
, u8 page_code
, unsigned char *scsi3addr
,
3209 int pci_dir
= XFER_NONE
;
3210 struct CommandList
*a
; /* for commands to be aborted */
3212 c
->cmd_type
= CMD_IOCTL_PEND
;
3213 c
->Header
.ReplyQueue
= 0;
3214 if (buff
!= NULL
&& size
> 0) {
3215 c
->Header
.SGList
= 1;
3216 c
->Header
.SGTotal
= 1;
3218 c
->Header
.SGList
= 0;
3219 c
->Header
.SGTotal
= 0;
3221 c
->Header
.Tag
.lower
= c
->busaddr
;
3222 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
3224 c
->Request
.Type
.Type
= cmd_type
;
3225 if (cmd_type
== TYPE_CMD
) {
3228 /* are we trying to read a vital product page */
3229 if (page_code
!= 0) {
3230 c
->Request
.CDB
[1] = 0x01;
3231 c
->Request
.CDB
[2] = page_code
;
3233 c
->Request
.CDBLen
= 6;
3234 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3235 c
->Request
.Type
.Direction
= XFER_READ
;
3236 c
->Request
.Timeout
= 0;
3237 c
->Request
.CDB
[0] = HPSA_INQUIRY
;
3238 c
->Request
.CDB
[4] = size
& 0xFF;
3240 case HPSA_REPORT_LOG
:
3241 case HPSA_REPORT_PHYS
:
3242 /* Talking to controller so It's a physical command
3243 mode = 00 target = 0. Nothing to write.
3245 c
->Request
.CDBLen
= 12;
3246 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3247 c
->Request
.Type
.Direction
= XFER_READ
;
3248 c
->Request
.Timeout
= 0;
3249 c
->Request
.CDB
[0] = cmd
;
3250 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
3251 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
3252 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
3253 c
->Request
.CDB
[9] = size
& 0xFF;
3255 case HPSA_CACHE_FLUSH
:
3256 c
->Request
.CDBLen
= 12;
3257 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3258 c
->Request
.Type
.Direction
= XFER_WRITE
;
3259 c
->Request
.Timeout
= 0;
3260 c
->Request
.CDB
[0] = BMIC_WRITE
;
3261 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
3262 c
->Request
.CDB
[7] = (size
>> 8) & 0xFF;
3263 c
->Request
.CDB
[8] = size
& 0xFF;
3265 case TEST_UNIT_READY
:
3266 c
->Request
.CDBLen
= 6;
3267 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3268 c
->Request
.Type
.Direction
= XFER_NONE
;
3269 c
->Request
.Timeout
= 0;
3272 dev_warn(&h
->pdev
->dev
, "unknown command 0x%c\n", cmd
);
3276 } else if (cmd_type
== TYPE_MSG
) {
3279 case HPSA_DEVICE_RESET_MSG
:
3280 c
->Request
.CDBLen
= 16;
3281 c
->Request
.Type
.Type
= 1; /* It is a MSG not a CMD */
3282 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3283 c
->Request
.Type
.Direction
= XFER_NONE
;
3284 c
->Request
.Timeout
= 0; /* Don't time out */
3285 memset(&c
->Request
.CDB
[0], 0, sizeof(c
->Request
.CDB
));
3286 c
->Request
.CDB
[0] = cmd
;
3287 c
->Request
.CDB
[1] = HPSA_RESET_TYPE_LUN
;
3288 /* If bytes 4-7 are zero, it means reset the */
3290 c
->Request
.CDB
[4] = 0x00;
3291 c
->Request
.CDB
[5] = 0x00;
3292 c
->Request
.CDB
[6] = 0x00;
3293 c
->Request
.CDB
[7] = 0x00;
3295 case HPSA_ABORT_MSG
:
3296 a
= buff
; /* point to command to be aborted */
3297 dev_dbg(&h
->pdev
->dev
, "Abort Tag:0x%08x:%08x using request Tag:0x%08x:%08x\n",
3298 a
->Header
.Tag
.upper
, a
->Header
.Tag
.lower
,
3299 c
->Header
.Tag
.upper
, c
->Header
.Tag
.lower
);
3300 c
->Request
.CDBLen
= 16;
3301 c
->Request
.Type
.Type
= TYPE_MSG
;
3302 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3303 c
->Request
.Type
.Direction
= XFER_WRITE
;
3304 c
->Request
.Timeout
= 0; /* Don't time out */
3305 c
->Request
.CDB
[0] = HPSA_TASK_MANAGEMENT
;
3306 c
->Request
.CDB
[1] = HPSA_TMF_ABORT_TASK
;
3307 c
->Request
.CDB
[2] = 0x00; /* reserved */
3308 c
->Request
.CDB
[3] = 0x00; /* reserved */
3309 /* Tag to abort goes in CDB[4]-CDB[11] */
3310 c
->Request
.CDB
[4] = a
->Header
.Tag
.lower
& 0xFF;
3311 c
->Request
.CDB
[5] = (a
->Header
.Tag
.lower
>> 8) & 0xFF;
3312 c
->Request
.CDB
[6] = (a
->Header
.Tag
.lower
>> 16) & 0xFF;
3313 c
->Request
.CDB
[7] = (a
->Header
.Tag
.lower
>> 24) & 0xFF;
3314 c
->Request
.CDB
[8] = a
->Header
.Tag
.upper
& 0xFF;
3315 c
->Request
.CDB
[9] = (a
->Header
.Tag
.upper
>> 8) & 0xFF;
3316 c
->Request
.CDB
[10] = (a
->Header
.Tag
.upper
>> 16) & 0xFF;
3317 c
->Request
.CDB
[11] = (a
->Header
.Tag
.upper
>> 24) & 0xFF;
3318 c
->Request
.CDB
[12] = 0x00; /* reserved */
3319 c
->Request
.CDB
[13] = 0x00; /* reserved */
3320 c
->Request
.CDB
[14] = 0x00; /* reserved */
3321 c
->Request
.CDB
[15] = 0x00; /* reserved */
3324 dev_warn(&h
->pdev
->dev
, "unknown message type %d\n",
3329 dev_warn(&h
->pdev
->dev
, "unknown command type %d\n", cmd_type
);
3333 switch (c
->Request
.Type
.Direction
) {
3335 pci_dir
= PCI_DMA_FROMDEVICE
;
3338 pci_dir
= PCI_DMA_TODEVICE
;
3341 pci_dir
= PCI_DMA_NONE
;
3344 pci_dir
= PCI_DMA_BIDIRECTIONAL
;
3347 hpsa_map_one(h
->pdev
, c
, buff
, size
, pci_dir
);
3353 * Map (physical) PCI mem into (virtual) kernel space
3355 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
3357 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
3358 ulong page_offs
= ((ulong
) base
) - page_base
;
3359 void __iomem
*page_remapped
= ioremap_nocache(page_base
,
3362 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
3365 /* Takes cmds off the submission queue and sends them to the hardware,
3366 * then puts them on the queue of cmds waiting for completion.
3368 static void start_io(struct ctlr_info
*h
)
3370 struct CommandList
*c
;
3371 unsigned long flags
;
3373 spin_lock_irqsave(&h
->lock
, flags
);
3374 while (!list_empty(&h
->reqQ
)) {
3375 c
= list_entry(h
->reqQ
.next
, struct CommandList
, list
);
3376 /* can't do anything if fifo is full */
3377 if ((h
->access
.fifo_full(h
))) {
3378 dev_warn(&h
->pdev
->dev
, "fifo full\n");
3382 /* Get the first entry from the Request Q */
3386 /* Put job onto the completed Q */
3389 /* Must increment commands_outstanding before unlocking
3390 * and submitting to avoid race checking for fifo full
3393 h
->commands_outstanding
++;
3394 if (h
->commands_outstanding
> h
->max_outstanding
)
3395 h
->max_outstanding
= h
->commands_outstanding
;
3397 /* Tell the controller execute command */
3398 spin_unlock_irqrestore(&h
->lock
, flags
);
3399 h
->access
.submit_command(h
, c
);
3400 spin_lock_irqsave(&h
->lock
, flags
);
3402 spin_unlock_irqrestore(&h
->lock
, flags
);
3405 static inline unsigned long get_next_completion(struct ctlr_info
*h
, u8 q
)
3407 return h
->access
.command_completed(h
, q
);
3410 static inline bool interrupt_pending(struct ctlr_info
*h
)
3412 return h
->access
.intr_pending(h
);
3415 static inline long interrupt_not_for_us(struct ctlr_info
*h
)
3417 return (h
->access
.intr_pending(h
) == 0) ||
3418 (h
->interrupts_enabled
== 0);
3421 static inline int bad_tag(struct ctlr_info
*h
, u32 tag_index
,
3424 if (unlikely(tag_index
>= h
->nr_cmds
)) {
3425 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
3431 static inline void finish_cmd(struct CommandList
*c
)
3433 unsigned long flags
;
3435 spin_lock_irqsave(&c
->h
->lock
, flags
);
3437 spin_unlock_irqrestore(&c
->h
->lock
, flags
);
3438 dial_up_lockup_detection_on_fw_flash_complete(c
->h
, c
);
3439 if (likely(c
->cmd_type
== CMD_SCSI
))
3440 complete_scsi_command(c
);
3441 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
3442 complete(c
->waiting
);
3445 static inline u32
hpsa_tag_contains_index(u32 tag
)
3447 return tag
& DIRECT_LOOKUP_BIT
;
3450 static inline u32
hpsa_tag_to_index(u32 tag
)
3452 return tag
>> DIRECT_LOOKUP_SHIFT
;
3456 static inline u32
hpsa_tag_discard_error_bits(struct ctlr_info
*h
, u32 tag
)
3458 #define HPSA_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
3459 #define HPSA_SIMPLE_ERROR_BITS 0x03
3460 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
3461 return tag
& ~HPSA_SIMPLE_ERROR_BITS
;
3462 return tag
& ~HPSA_PERF_ERROR_BITS
;
3465 /* process completion of an indexed ("direct lookup") command */
3466 static inline void process_indexed_cmd(struct ctlr_info
*h
,
3470 struct CommandList
*c
;
3472 tag_index
= hpsa_tag_to_index(raw_tag
);
3473 if (!bad_tag(h
, tag_index
, raw_tag
)) {
3474 c
= h
->cmd_pool
+ tag_index
;
3479 /* process completion of a non-indexed command */
3480 static inline void process_nonindexed_cmd(struct ctlr_info
*h
,
3484 struct CommandList
*c
= NULL
;
3485 unsigned long flags
;
3487 tag
= hpsa_tag_discard_error_bits(h
, raw_tag
);
3488 spin_lock_irqsave(&h
->lock
, flags
);
3489 list_for_each_entry(c
, &h
->cmpQ
, list
) {
3490 if ((c
->busaddr
& 0xFFFFFFE0) == (tag
& 0xFFFFFFE0)) {
3491 spin_unlock_irqrestore(&h
->lock
, flags
);
3496 spin_unlock_irqrestore(&h
->lock
, flags
);
3497 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
3500 /* Some controllers, like p400, will give us one interrupt
3501 * after a soft reset, even if we turned interrupts off.
3502 * Only need to check for this in the hpsa_xxx_discard_completions
3505 static int ignore_bogus_interrupt(struct ctlr_info
*h
)
3507 if (likely(!reset_devices
))
3510 if (likely(h
->interrupts_enabled
))
3513 dev_info(&h
->pdev
->dev
, "Received interrupt while interrupts disabled "
3514 "(known firmware bug.) Ignoring.\n");
3520 * Convert &h->q[x] (passed to interrupt handlers) back to h.
3521 * Relies on (h-q[x] == x) being true for x such that
3522 * 0 <= x < MAX_REPLY_QUEUES.
3524 static struct ctlr_info
*queue_to_hba(u8
*queue
)
3526 return container_of((queue
- *queue
), struct ctlr_info
, q
[0]);
3529 static irqreturn_t
hpsa_intx_discard_completions(int irq
, void *queue
)
3531 struct ctlr_info
*h
= queue_to_hba(queue
);
3532 u8 q
= *(u8
*) queue
;
3535 if (ignore_bogus_interrupt(h
))
3538 if (interrupt_not_for_us(h
))
3540 h
->last_intr_timestamp
= get_jiffies_64();
3541 while (interrupt_pending(h
)) {
3542 raw_tag
= get_next_completion(h
, q
);
3543 while (raw_tag
!= FIFO_EMPTY
)
3544 raw_tag
= next_command(h
, q
);
3549 static irqreturn_t
hpsa_msix_discard_completions(int irq
, void *queue
)
3551 struct ctlr_info
*h
= queue_to_hba(queue
);
3553 u8 q
= *(u8
*) queue
;
3555 if (ignore_bogus_interrupt(h
))
3558 h
->last_intr_timestamp
= get_jiffies_64();
3559 raw_tag
= get_next_completion(h
, q
);
3560 while (raw_tag
!= FIFO_EMPTY
)
3561 raw_tag
= next_command(h
, q
);
3565 static irqreturn_t
do_hpsa_intr_intx(int irq
, void *queue
)
3567 struct ctlr_info
*h
= queue_to_hba((u8
*) queue
);
3569 u8 q
= *(u8
*) queue
;
3571 if (interrupt_not_for_us(h
))
3573 h
->last_intr_timestamp
= get_jiffies_64();
3574 while (interrupt_pending(h
)) {
3575 raw_tag
= get_next_completion(h
, q
);
3576 while (raw_tag
!= FIFO_EMPTY
) {
3577 if (likely(hpsa_tag_contains_index(raw_tag
)))
3578 process_indexed_cmd(h
, raw_tag
);
3580 process_nonindexed_cmd(h
, raw_tag
);
3581 raw_tag
= next_command(h
, q
);
3587 static irqreturn_t
do_hpsa_intr_msi(int irq
, void *queue
)
3589 struct ctlr_info
*h
= queue_to_hba(queue
);
3591 u8 q
= *(u8
*) queue
;
3593 h
->last_intr_timestamp
= get_jiffies_64();
3594 raw_tag
= get_next_completion(h
, q
);
3595 while (raw_tag
!= FIFO_EMPTY
) {
3596 if (likely(hpsa_tag_contains_index(raw_tag
)))
3597 process_indexed_cmd(h
, raw_tag
);
3599 process_nonindexed_cmd(h
, raw_tag
);
3600 raw_tag
= next_command(h
, q
);
3605 /* Send a message CDB to the firmware. Careful, this only works
3606 * in simple mode, not performant mode due to the tag lookup.
3607 * We only ever use this immediately after a controller reset.
3609 static __devinit
int hpsa_message(struct pci_dev
*pdev
, unsigned char opcode
,
3613 struct CommandListHeader CommandHeader
;
3614 struct RequestBlock Request
;
3615 struct ErrDescriptor ErrorDescriptor
;
3617 struct Command
*cmd
;
3618 static const size_t cmd_sz
= sizeof(*cmd
) +
3619 sizeof(cmd
->ErrorDescriptor
);
3621 uint32_t paddr32
, tag
;
3622 void __iomem
*vaddr
;
3625 vaddr
= pci_ioremap_bar(pdev
, 0);
3629 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
3630 * CCISS commands, so they must be allocated from the lower 4GiB of
3633 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
3639 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
3645 /* This must fit, because of the 32-bit consistent DMA mask. Also,
3646 * although there's no guarantee, we assume that the address is at
3647 * least 4-byte aligned (most likely, it's page-aligned).
3651 cmd
->CommandHeader
.ReplyQueue
= 0;
3652 cmd
->CommandHeader
.SGList
= 0;
3653 cmd
->CommandHeader
.SGTotal
= 0;
3654 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
3655 cmd
->CommandHeader
.Tag
.upper
= 0;
3656 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
3658 cmd
->Request
.CDBLen
= 16;
3659 cmd
->Request
.Type
.Type
= TYPE_MSG
;
3660 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
3661 cmd
->Request
.Type
.Direction
= XFER_NONE
;
3662 cmd
->Request
.Timeout
= 0; /* Don't time out */
3663 cmd
->Request
.CDB
[0] = opcode
;
3664 cmd
->Request
.CDB
[1] = type
;
3665 memset(&cmd
->Request
.CDB
[2], 0, 14); /* rest of the CDB is reserved */
3666 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(*cmd
);
3667 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
3668 cmd
->ErrorDescriptor
.Len
= sizeof(struct ErrorInfo
);
3670 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
3672 for (i
= 0; i
< HPSA_MSG_SEND_RETRY_LIMIT
; i
++) {
3673 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
3674 if ((tag
& ~HPSA_SIMPLE_ERROR_BITS
) == paddr32
)
3676 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS
);
3681 /* we leak the DMA buffer here ... no choice since the controller could
3682 * still complete the command.
3684 if (i
== HPSA_MSG_SEND_RETRY_LIMIT
) {
3685 dev_err(&pdev
->dev
, "controller message %02x:%02x timed out\n",
3690 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
3692 if (tag
& HPSA_ERROR_BIT
) {
3693 dev_err(&pdev
->dev
, "controller message %02x:%02x failed\n",
3698 dev_info(&pdev
->dev
, "controller message %02x:%02x succeeded\n",
3703 #define hpsa_noop(p) hpsa_message(p, 3, 0)
3705 static int hpsa_controller_hard_reset(struct pci_dev
*pdev
,
3706 void * __iomem vaddr
, u32 use_doorbell
)
3712 /* For everything after the P600, the PCI power state method
3713 * of resetting the controller doesn't work, so we have this
3714 * other way using the doorbell register.
3716 dev_info(&pdev
->dev
, "using doorbell to reset controller\n");
3717 writel(use_doorbell
, vaddr
+ SA5_DOORBELL
);
3718 } else { /* Try to do it the PCI power state way */
3720 /* Quoting from the Open CISS Specification: "The Power
3721 * Management Control/Status Register (CSR) controls the power
3722 * state of the device. The normal operating state is D0,
3723 * CSR=00h. The software off state is D3, CSR=03h. To reset
3724 * the controller, place the interface device in D3 then to D0,
3725 * this causes a secondary PCI reset which will reset the
3728 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
3731 "hpsa_reset_controller: "
3732 "PCI PM not supported\n");
3735 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
3736 /* enter the D3hot power management state */
3737 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
3738 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
3740 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
3744 /* enter the D0 power management state */
3745 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
3747 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
3750 * The P600 requires a small delay when changing states.
3751 * Otherwise we may think the board did not reset and we bail.
3752 * This for kdump only and is particular to the P600.
3759 static __devinit
void init_driver_version(char *driver_version
, int len
)
3761 memset(driver_version
, 0, len
);
3762 strncpy(driver_version
, HPSA
" " HPSA_DRIVER_VERSION
, len
- 1);
3765 static __devinit
int write_driver_ver_to_cfgtable(
3766 struct CfgTable __iomem
*cfgtable
)
3768 char *driver_version
;
3769 int i
, size
= sizeof(cfgtable
->driver_version
);
3771 driver_version
= kmalloc(size
, GFP_KERNEL
);
3772 if (!driver_version
)
3775 init_driver_version(driver_version
, size
);
3776 for (i
= 0; i
< size
; i
++)
3777 writeb(driver_version
[i
], &cfgtable
->driver_version
[i
]);
3778 kfree(driver_version
);
3782 static __devinit
void read_driver_ver_from_cfgtable(
3783 struct CfgTable __iomem
*cfgtable
, unsigned char *driver_ver
)
3787 for (i
= 0; i
< sizeof(cfgtable
->driver_version
); i
++)
3788 driver_ver
[i
] = readb(&cfgtable
->driver_version
[i
]);
3791 static __devinit
int controller_reset_failed(
3792 struct CfgTable __iomem
*cfgtable
)
3795 char *driver_ver
, *old_driver_ver
;
3796 int rc
, size
= sizeof(cfgtable
->driver_version
);
3798 old_driver_ver
= kmalloc(2 * size
, GFP_KERNEL
);
3799 if (!old_driver_ver
)
3801 driver_ver
= old_driver_ver
+ size
;
3803 /* After a reset, the 32 bytes of "driver version" in the cfgtable
3804 * should have been changed, otherwise we know the reset failed.
3806 init_driver_version(old_driver_ver
, size
);
3807 read_driver_ver_from_cfgtable(cfgtable
, driver_ver
);
3808 rc
= !memcmp(driver_ver
, old_driver_ver
, size
);
3809 kfree(old_driver_ver
);
3812 /* This does a hard reset of the controller using PCI power management
3813 * states or the using the doorbell register.
3815 static __devinit
int hpsa_kdump_hard_reset_controller(struct pci_dev
*pdev
)
3819 u64 cfg_base_addr_index
;
3820 void __iomem
*vaddr
;
3821 unsigned long paddr
;
3822 u32 misc_fw_support
;
3824 struct CfgTable __iomem
*cfgtable
;
3827 u16 command_register
;
3829 /* For controllers as old as the P600, this is very nearly
3832 * pci_save_state(pci_dev);
3833 * pci_set_power_state(pci_dev, PCI_D3hot);
3834 * pci_set_power_state(pci_dev, PCI_D0);
3835 * pci_restore_state(pci_dev);
3837 * For controllers newer than the P600, the pci power state
3838 * method of resetting doesn't work so we have another way
3839 * using the doorbell register.
3842 rc
= hpsa_lookup_board_id(pdev
, &board_id
);
3843 if (rc
< 0 || !ctlr_is_resettable(board_id
)) {
3844 dev_warn(&pdev
->dev
, "Not resetting device.\n");
3848 /* if controller is soft- but not hard resettable... */
3849 if (!ctlr_is_hard_resettable(board_id
))
3850 return -ENOTSUPP
; /* try soft reset later. */
3852 /* Save the PCI command register */
3853 pci_read_config_word(pdev
, 4, &command_register
);
3854 /* Turn the board off. This is so that later pci_restore_state()
3855 * won't turn the board on before the rest of config space is ready.
3857 pci_disable_device(pdev
);
3858 pci_save_state(pdev
);
3860 /* find the first memory BAR, so we can find the cfg table */
3861 rc
= hpsa_pci_find_memory_BAR(pdev
, &paddr
);
3864 vaddr
= remap_pci_mem(paddr
, 0x250);
3868 /* find cfgtable in order to check if reset via doorbell is supported */
3869 rc
= hpsa_find_cfg_addrs(pdev
, vaddr
, &cfg_base_addr
,
3870 &cfg_base_addr_index
, &cfg_offset
);
3873 cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
3874 cfg_base_addr_index
) + cfg_offset
, sizeof(*cfgtable
));
3879 rc
= write_driver_ver_to_cfgtable(cfgtable
);
3883 /* If reset via doorbell register is supported, use that.
3884 * There are two such methods. Favor the newest method.
3886 misc_fw_support
= readl(&cfgtable
->misc_fw_support
);
3887 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET2
;
3889 use_doorbell
= DOORBELL_CTLR_RESET2
;
3891 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET
;
3893 dev_warn(&pdev
->dev
, "Soft reset not supported. "
3894 "Firmware update is required.\n");
3895 rc
= -ENOTSUPP
; /* try soft reset */
3896 goto unmap_cfgtable
;
3900 rc
= hpsa_controller_hard_reset(pdev
, vaddr
, use_doorbell
);
3902 goto unmap_cfgtable
;
3904 pci_restore_state(pdev
);
3905 rc
= pci_enable_device(pdev
);
3907 dev_warn(&pdev
->dev
, "failed to enable device.\n");
3908 goto unmap_cfgtable
;
3910 pci_write_config_word(pdev
, 4, command_register
);
3912 /* Some devices (notably the HP Smart Array 5i Controller)
3913 need a little pause here */
3914 msleep(HPSA_POST_RESET_PAUSE_MSECS
);
3916 /* Wait for board to become not ready, then ready. */
3917 dev_info(&pdev
->dev
, "Waiting for board to reset.\n");
3918 rc
= hpsa_wait_for_board_state(pdev
, vaddr
, BOARD_NOT_READY
);
3920 dev_warn(&pdev
->dev
,
3921 "failed waiting for board to reset."
3922 " Will try soft reset.\n");
3923 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
3924 goto unmap_cfgtable
;
3926 rc
= hpsa_wait_for_board_state(pdev
, vaddr
, BOARD_READY
);
3928 dev_warn(&pdev
->dev
,
3929 "failed waiting for board to become ready "
3930 "after hard reset\n");
3931 goto unmap_cfgtable
;
3934 rc
= controller_reset_failed(vaddr
);
3936 goto unmap_cfgtable
;
3938 dev_warn(&pdev
->dev
, "Unable to successfully reset "
3939 "controller. Will try soft reset.\n");
3942 dev_info(&pdev
->dev
, "board ready after hard reset.\n");
3954 * We cannot read the structure directly, for portability we must use
3956 * This is for debug only.
3958 static void print_cfg_table(struct device
*dev
, struct CfgTable
*tb
)
3964 dev_info(dev
, "Controller Configuration information\n");
3965 dev_info(dev
, "------------------------------------\n");
3966 for (i
= 0; i
< 4; i
++)
3967 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3968 temp_name
[4] = '\0';
3969 dev_info(dev
, " Signature = %s\n", temp_name
);
3970 dev_info(dev
, " Spec Number = %d\n", readl(&(tb
->SpecValence
)));
3971 dev_info(dev
, " Transport methods supported = 0x%x\n",
3972 readl(&(tb
->TransportSupport
)));
3973 dev_info(dev
, " Transport methods active = 0x%x\n",
3974 readl(&(tb
->TransportActive
)));
3975 dev_info(dev
, " Requested transport Method = 0x%x\n",
3976 readl(&(tb
->HostWrite
.TransportRequest
)));
3977 dev_info(dev
, " Coalesce Interrupt Delay = 0x%x\n",
3978 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3979 dev_info(dev
, " Coalesce Interrupt Count = 0x%x\n",
3980 readl(&(tb
->HostWrite
.CoalIntCount
)));
3981 dev_info(dev
, " Max outstanding commands = 0x%d\n",
3982 readl(&(tb
->CmdsOutMax
)));
3983 dev_info(dev
, " Bus Types = 0x%x\n", readl(&(tb
->BusTypes
)));
3984 for (i
= 0; i
< 16; i
++)
3985 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3986 temp_name
[16] = '\0';
3987 dev_info(dev
, " Server Name = %s\n", temp_name
);
3988 dev_info(dev
, " Heartbeat Counter = 0x%x\n\n\n",
3989 readl(&(tb
->HeartBeat
)));
3990 #endif /* HPSA_DEBUG */
3993 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3995 int i
, offset
, mem_type
, bar_type
;
3997 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
4000 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
4001 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
4002 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
4005 mem_type
= pci_resource_flags(pdev
, i
) &
4006 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
4008 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
4009 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
4010 offset
+= 4; /* 32 bit */
4012 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
4015 default: /* reserved in PCI 2.2 */
4016 dev_warn(&pdev
->dev
,
4017 "base address is invalid\n");
4022 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
4028 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
4029 * controllers that are capable. If not, we use IO-APIC mode.
4032 static void __devinit
hpsa_interrupt_mode(struct ctlr_info
*h
)
4034 #ifdef CONFIG_PCI_MSI
4036 struct msix_entry hpsa_msix_entries
[MAX_REPLY_QUEUES
];
4038 for (i
= 0; i
< MAX_REPLY_QUEUES
; i
++) {
4039 hpsa_msix_entries
[i
].vector
= 0;
4040 hpsa_msix_entries
[i
].entry
= i
;
4043 /* Some boards advertise MSI but don't really support it */
4044 if ((h
->board_id
== 0x40700E11) || (h
->board_id
== 0x40800E11) ||
4045 (h
->board_id
== 0x40820E11) || (h
->board_id
== 0x40830E11))
4046 goto default_int_mode
;
4047 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSIX
)) {
4048 dev_info(&h
->pdev
->dev
, "MSIX\n");
4049 err
= pci_enable_msix(h
->pdev
, hpsa_msix_entries
,
4052 for (i
= 0; i
< MAX_REPLY_QUEUES
; i
++)
4053 h
->intr
[i
] = hpsa_msix_entries
[i
].vector
;
4058 dev_warn(&h
->pdev
->dev
, "only %d MSI-X vectors "
4059 "available\n", err
);
4060 goto default_int_mode
;
4062 dev_warn(&h
->pdev
->dev
, "MSI-X init failed %d\n",
4064 goto default_int_mode
;
4067 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSI
)) {
4068 dev_info(&h
->pdev
->dev
, "MSI\n");
4069 if (!pci_enable_msi(h
->pdev
))
4072 dev_warn(&h
->pdev
->dev
, "MSI init failed\n");
4075 #endif /* CONFIG_PCI_MSI */
4076 /* if we get here we're going to use the default interrupt mode */
4077 h
->intr
[h
->intr_mode
] = h
->pdev
->irq
;
4080 static int __devinit
hpsa_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
)
4083 u32 subsystem_vendor_id
, subsystem_device_id
;
4085 subsystem_vendor_id
= pdev
->subsystem_vendor
;
4086 subsystem_device_id
= pdev
->subsystem_device
;
4087 *board_id
= ((subsystem_device_id
<< 16) & 0xffff0000) |
4088 subsystem_vendor_id
;
4090 for (i
= 0; i
< ARRAY_SIZE(products
); i
++)
4091 if (*board_id
== products
[i
].board_id
)
4094 if ((subsystem_vendor_id
!= PCI_VENDOR_ID_HP
&&
4095 subsystem_vendor_id
!= PCI_VENDOR_ID_COMPAQ
) ||
4097 dev_warn(&pdev
->dev
, "unrecognized board ID: "
4098 "0x%08x, ignoring.\n", *board_id
);
4101 return ARRAY_SIZE(products
) - 1; /* generic unknown smart array */
4104 static int __devinit
hpsa_pci_find_memory_BAR(struct pci_dev
*pdev
,
4105 unsigned long *memory_bar
)
4109 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++)
4110 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
) {
4111 /* addressing mode bits already removed */
4112 *memory_bar
= pci_resource_start(pdev
, i
);
4113 dev_dbg(&pdev
->dev
, "memory BAR = %lx\n",
4117 dev_warn(&pdev
->dev
, "no memory BAR found\n");
4121 static int __devinit
hpsa_wait_for_board_state(struct pci_dev
*pdev
,
4122 void __iomem
*vaddr
, int wait_for_ready
)
4127 iterations
= HPSA_BOARD_READY_ITERATIONS
;
4129 iterations
= HPSA_BOARD_NOT_READY_ITERATIONS
;
4131 for (i
= 0; i
< iterations
; i
++) {
4132 scratchpad
= readl(vaddr
+ SA5_SCRATCHPAD_OFFSET
);
4133 if (wait_for_ready
) {
4134 if (scratchpad
== HPSA_FIRMWARE_READY
)
4137 if (scratchpad
!= HPSA_FIRMWARE_READY
)
4140 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS
);
4142 dev_warn(&pdev
->dev
, "board not ready, timed out.\n");
4146 static int __devinit
hpsa_find_cfg_addrs(struct pci_dev
*pdev
,
4147 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
4150 *cfg_base_addr
= readl(vaddr
+ SA5_CTCFG_OFFSET
);
4151 *cfg_offset
= readl(vaddr
+ SA5_CTMEM_OFFSET
);
4152 *cfg_base_addr
&= (u32
) 0x0000ffff;
4153 *cfg_base_addr_index
= find_PCI_BAR_index(pdev
, *cfg_base_addr
);
4154 if (*cfg_base_addr_index
== -1) {
4155 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index\n");
4161 static int __devinit
hpsa_find_cfgtables(struct ctlr_info
*h
)
4165 u64 cfg_base_addr_index
;
4169 rc
= hpsa_find_cfg_addrs(h
->pdev
, h
->vaddr
, &cfg_base_addr
,
4170 &cfg_base_addr_index
, &cfg_offset
);
4173 h
->cfgtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4174 cfg_base_addr_index
) + cfg_offset
, sizeof(*h
->cfgtable
));
4177 rc
= write_driver_ver_to_cfgtable(h
->cfgtable
);
4180 /* Find performant mode table. */
4181 trans_offset
= readl(&h
->cfgtable
->TransMethodOffset
);
4182 h
->transtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4183 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
4184 sizeof(*h
->transtable
));
4190 static void __devinit
hpsa_get_max_perf_mode_cmds(struct ctlr_info
*h
)
4192 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
4194 /* Limit commands in memory limited kdump scenario. */
4195 if (reset_devices
&& h
->max_commands
> 32)
4196 h
->max_commands
= 32;
4198 if (h
->max_commands
< 16) {
4199 dev_warn(&h
->pdev
->dev
, "Controller reports "
4200 "max supported commands of %d, an obvious lie. "
4201 "Using 16. Ensure that firmware is up to date.\n",
4203 h
->max_commands
= 16;
4207 /* Interrogate the hardware for some limits:
4208 * max commands, max SG elements without chaining, and with chaining,
4209 * SG chain block size, etc.
4211 static void __devinit
hpsa_find_board_params(struct ctlr_info
*h
)
4213 hpsa_get_max_perf_mode_cmds(h
);
4214 h
->nr_cmds
= h
->max_commands
- 4; /* Allow room for some ioctls */
4215 h
->maxsgentries
= readl(&(h
->cfgtable
->MaxScatterGatherElements
));
4217 * Limit in-command s/g elements to 32 save dma'able memory.
4218 * Howvever spec says if 0, use 31
4220 h
->max_cmd_sg_entries
= 31;
4221 if (h
->maxsgentries
> 512) {
4222 h
->max_cmd_sg_entries
= 32;
4223 h
->chainsize
= h
->maxsgentries
- h
->max_cmd_sg_entries
+ 1;
4224 h
->maxsgentries
--; /* save one for chain pointer */
4226 h
->maxsgentries
= 31; /* default to traditional values */
4230 /* Find out what task management functions are supported and cache */
4231 h
->TMFSupportFlags
= readl(&(h
->cfgtable
->TMFSupportFlags
));
4234 static inline bool hpsa_CISS_signature_present(struct ctlr_info
*h
)
4236 if (!check_signature(h
->cfgtable
->Signature
, "CISS", 4)) {
4237 dev_warn(&h
->pdev
->dev
, "not a valid CISS config table\n");
4243 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
4244 static inline void hpsa_enable_scsi_prefetch(struct ctlr_info
*h
)
4249 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
4251 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
4255 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
4256 * in a prefetch beyond physical memory.
4258 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info
*h
)
4262 if (h
->board_id
!= 0x3225103C)
4264 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
4265 dma_prefetch
|= 0x8000;
4266 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
4269 static void __devinit
hpsa_wait_for_mode_change_ack(struct ctlr_info
*h
)
4273 unsigned long flags
;
4275 /* under certain very rare conditions, this can take awhile.
4276 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
4277 * as we enter this code.)
4279 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
4280 spin_lock_irqsave(&h
->lock
, flags
);
4281 doorbell_value
= readl(h
->vaddr
+ SA5_DOORBELL
);
4282 spin_unlock_irqrestore(&h
->lock
, flags
);
4283 if (!(doorbell_value
& CFGTBL_ChangeReq
))
4285 /* delay and try again */
4286 usleep_range(10000, 20000);
4290 static int __devinit
hpsa_enter_simple_mode(struct ctlr_info
*h
)
4294 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
4295 if (!(trans_support
& SIMPLE_MODE
))
4298 h
->max_commands
= readl(&(h
->cfgtable
->CmdsOutMax
));
4299 /* Update the field, and then ring the doorbell */
4300 writel(CFGTBL_Trans_Simple
, &(h
->cfgtable
->HostWrite
.TransportRequest
));
4301 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
4302 hpsa_wait_for_mode_change_ack(h
);
4303 print_cfg_table(&h
->pdev
->dev
, h
->cfgtable
);
4304 if (!(readl(&(h
->cfgtable
->TransportActive
)) & CFGTBL_Trans_Simple
)) {
4305 dev_warn(&h
->pdev
->dev
,
4306 "unable to get board into simple mode\n");
4309 h
->transMethod
= CFGTBL_Trans_Simple
;
4313 static int __devinit
hpsa_pci_init(struct ctlr_info
*h
)
4315 int prod_index
, err
;
4317 prod_index
= hpsa_lookup_board_id(h
->pdev
, &h
->board_id
);
4320 h
->product_name
= products
[prod_index
].product_name
;
4321 h
->access
= *(products
[prod_index
].access
);
4323 pci_disable_link_state(h
->pdev
, PCIE_LINK_STATE_L0S
|
4324 PCIE_LINK_STATE_L1
| PCIE_LINK_STATE_CLKPM
);
4326 err
= pci_enable_device(h
->pdev
);
4328 dev_warn(&h
->pdev
->dev
, "unable to enable PCI device\n");
4332 /* Enable bus mastering (pci_disable_device may disable this) */
4333 pci_set_master(h
->pdev
);
4335 err
= pci_request_regions(h
->pdev
, HPSA
);
4337 dev_err(&h
->pdev
->dev
,
4338 "cannot obtain PCI resources, aborting\n");
4341 hpsa_interrupt_mode(h
);
4342 err
= hpsa_pci_find_memory_BAR(h
->pdev
, &h
->paddr
);
4344 goto err_out_free_res
;
4345 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
4348 goto err_out_free_res
;
4350 err
= hpsa_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
);
4352 goto err_out_free_res
;
4353 err
= hpsa_find_cfgtables(h
);
4355 goto err_out_free_res
;
4356 hpsa_find_board_params(h
);
4358 if (!hpsa_CISS_signature_present(h
)) {
4360 goto err_out_free_res
;
4362 hpsa_enable_scsi_prefetch(h
);
4363 hpsa_p600_dma_prefetch_quirk(h
);
4364 err
= hpsa_enter_simple_mode(h
);
4366 goto err_out_free_res
;
4371 iounmap(h
->transtable
);
4373 iounmap(h
->cfgtable
);
4376 pci_disable_device(h
->pdev
);
4377 pci_release_regions(h
->pdev
);
4381 static void __devinit
hpsa_hba_inquiry(struct ctlr_info
*h
)
4385 #define HBA_INQUIRY_BYTE_COUNT 64
4386 h
->hba_inquiry_data
= kmalloc(HBA_INQUIRY_BYTE_COUNT
, GFP_KERNEL
);
4387 if (!h
->hba_inquiry_data
)
4389 rc
= hpsa_scsi_do_inquiry(h
, RAID_CTLR_LUNID
, 0,
4390 h
->hba_inquiry_data
, HBA_INQUIRY_BYTE_COUNT
);
4392 kfree(h
->hba_inquiry_data
);
4393 h
->hba_inquiry_data
= NULL
;
4397 static __devinit
int hpsa_init_reset_devices(struct pci_dev
*pdev
)
4404 /* Reset the controller with a PCI power-cycle or via doorbell */
4405 rc
= hpsa_kdump_hard_reset_controller(pdev
);
4407 /* -ENOTSUPP here means we cannot reset the controller
4408 * but it's already (and still) up and running in
4409 * "performant mode". Or, it might be 640x, which can't reset
4410 * due to concerns about shared bbwc between 6402/6404 pair.
4412 if (rc
== -ENOTSUPP
)
4413 return rc
; /* just try to do the kdump anyhow. */
4417 /* Now try to get the controller to respond to a no-op */
4418 dev_warn(&pdev
->dev
, "Waiting for controller to respond to no-op\n");
4419 for (i
= 0; i
< HPSA_POST_RESET_NOOP_RETRIES
; i
++) {
4420 if (hpsa_noop(pdev
) == 0)
4423 dev_warn(&pdev
->dev
, "no-op failed%s\n",
4424 (i
< 11 ? "; re-trying" : ""));
4429 static __devinit
int hpsa_allocate_cmd_pool(struct ctlr_info
*h
)
4431 h
->cmd_pool_bits
= kzalloc(
4432 DIV_ROUND_UP(h
->nr_cmds
, BITS_PER_LONG
) *
4433 sizeof(unsigned long), GFP_KERNEL
);
4434 h
->cmd_pool
= pci_alloc_consistent(h
->pdev
,
4435 h
->nr_cmds
* sizeof(*h
->cmd_pool
),
4436 &(h
->cmd_pool_dhandle
));
4437 h
->errinfo_pool
= pci_alloc_consistent(h
->pdev
,
4438 h
->nr_cmds
* sizeof(*h
->errinfo_pool
),
4439 &(h
->errinfo_pool_dhandle
));
4440 if ((h
->cmd_pool_bits
== NULL
)
4441 || (h
->cmd_pool
== NULL
)
4442 || (h
->errinfo_pool
== NULL
)) {
4443 dev_err(&h
->pdev
->dev
, "out of memory in %s", __func__
);
4449 static void hpsa_free_cmd_pool(struct ctlr_info
*h
)
4451 kfree(h
->cmd_pool_bits
);
4453 pci_free_consistent(h
->pdev
,
4454 h
->nr_cmds
* sizeof(struct CommandList
),
4455 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4456 if (h
->errinfo_pool
)
4457 pci_free_consistent(h
->pdev
,
4458 h
->nr_cmds
* sizeof(struct ErrorInfo
),
4460 h
->errinfo_pool_dhandle
);
4463 static int hpsa_request_irq(struct ctlr_info
*h
,
4464 irqreturn_t (*msixhandler
)(int, void *),
4465 irqreturn_t (*intxhandler
)(int, void *))
4470 * initialize h->q[x] = x so that interrupt handlers know which
4473 for (i
= 0; i
< MAX_REPLY_QUEUES
; i
++)
4476 if (h
->intr_mode
== PERF_MODE_INT
&& h
->msix_vector
) {
4477 /* If performant mode and MSI-X, use multiple reply queues */
4478 for (i
= 0; i
< MAX_REPLY_QUEUES
; i
++)
4479 rc
= request_irq(h
->intr
[i
], msixhandler
,
4483 /* Use single reply pool */
4484 if (h
->msix_vector
|| h
->msi_vector
) {
4485 rc
= request_irq(h
->intr
[h
->intr_mode
],
4486 msixhandler
, 0, h
->devname
,
4487 &h
->q
[h
->intr_mode
]);
4489 rc
= request_irq(h
->intr
[h
->intr_mode
],
4490 intxhandler
, IRQF_SHARED
, h
->devname
,
4491 &h
->q
[h
->intr_mode
]);
4495 dev_err(&h
->pdev
->dev
, "unable to get irq %d for %s\n",
4496 h
->intr
[h
->intr_mode
], h
->devname
);
4502 static int __devinit
hpsa_kdump_soft_reset(struct ctlr_info
*h
)
4504 if (hpsa_send_host_reset(h
, RAID_CTLR_LUNID
,
4505 HPSA_RESET_TYPE_CONTROLLER
)) {
4506 dev_warn(&h
->pdev
->dev
, "Resetting array controller failed.\n");
4510 dev_info(&h
->pdev
->dev
, "Waiting for board to soft reset.\n");
4511 if (hpsa_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_NOT_READY
)) {
4512 dev_warn(&h
->pdev
->dev
, "Soft reset had no effect.\n");
4516 dev_info(&h
->pdev
->dev
, "Board reset, awaiting READY status.\n");
4517 if (hpsa_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
)) {
4518 dev_warn(&h
->pdev
->dev
, "Board failed to become ready "
4519 "after soft reset.\n");
4526 static void free_irqs(struct ctlr_info
*h
)
4530 if (!h
->msix_vector
|| h
->intr_mode
!= PERF_MODE_INT
) {
4531 /* Single reply queue, only one irq to free */
4533 free_irq(h
->intr
[i
], &h
->q
[i
]);
4537 for (i
= 0; i
< MAX_REPLY_QUEUES
; i
++)
4538 free_irq(h
->intr
[i
], &h
->q
[i
]);
4541 static void hpsa_free_irqs_and_disable_msix(struct ctlr_info
*h
)
4544 #ifdef CONFIG_PCI_MSI
4545 if (h
->msix_vector
) {
4546 if (h
->pdev
->msix_enabled
)
4547 pci_disable_msix(h
->pdev
);
4548 } else if (h
->msi_vector
) {
4549 if (h
->pdev
->msi_enabled
)
4550 pci_disable_msi(h
->pdev
);
4552 #endif /* CONFIG_PCI_MSI */
4555 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info
*h
)
4557 hpsa_free_irqs_and_disable_msix(h
);
4558 hpsa_free_sg_chain_blocks(h
);
4559 hpsa_free_cmd_pool(h
);
4560 kfree(h
->blockFetchTable
);
4561 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
4562 h
->reply_pool
, h
->reply_pool_dhandle
);
4566 iounmap(h
->transtable
);
4568 iounmap(h
->cfgtable
);
4569 pci_release_regions(h
->pdev
);
4573 static void remove_ctlr_from_lockup_detector_list(struct ctlr_info
*h
)
4575 assert_spin_locked(&lockup_detector_lock
);
4576 if (!hpsa_lockup_detector
)
4578 if (h
->lockup_detected
)
4579 return; /* already stopped the lockup detector */
4580 list_del(&h
->lockup_list
);
4583 /* Called when controller lockup detected. */
4584 static void fail_all_cmds_on_list(struct ctlr_info
*h
, struct list_head
*list
)
4586 struct CommandList
*c
= NULL
;
4588 assert_spin_locked(&h
->lock
);
4589 /* Mark all outstanding commands as failed and complete them. */
4590 while (!list_empty(list
)) {
4591 c
= list_entry(list
->next
, struct CommandList
, list
);
4592 c
->err_info
->CommandStatus
= CMD_HARDWARE_ERR
;
4597 static void controller_lockup_detected(struct ctlr_info
*h
)
4599 unsigned long flags
;
4601 assert_spin_locked(&lockup_detector_lock
);
4602 remove_ctlr_from_lockup_detector_list(h
);
4603 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4604 spin_lock_irqsave(&h
->lock
, flags
);
4605 h
->lockup_detected
= readl(h
->vaddr
+ SA5_SCRATCHPAD_OFFSET
);
4606 spin_unlock_irqrestore(&h
->lock
, flags
);
4607 dev_warn(&h
->pdev
->dev
, "Controller lockup detected: 0x%08x\n",
4608 h
->lockup_detected
);
4609 pci_disable_device(h
->pdev
);
4610 spin_lock_irqsave(&h
->lock
, flags
);
4611 fail_all_cmds_on_list(h
, &h
->cmpQ
);
4612 fail_all_cmds_on_list(h
, &h
->reqQ
);
4613 spin_unlock_irqrestore(&h
->lock
, flags
);
4616 static void detect_controller_lockup(struct ctlr_info
*h
)
4620 unsigned long flags
;
4622 assert_spin_locked(&lockup_detector_lock
);
4623 now
= get_jiffies_64();
4624 /* If we've received an interrupt recently, we're ok. */
4625 if (time_after64(h
->last_intr_timestamp
+
4626 (h
->heartbeat_sample_interval
), now
))
4630 * If we've already checked the heartbeat recently, we're ok.
4631 * This could happen if someone sends us a signal. We
4632 * otherwise don't care about signals in this thread.
4634 if (time_after64(h
->last_heartbeat_timestamp
+
4635 (h
->heartbeat_sample_interval
), now
))
4638 /* If heartbeat has not changed since we last looked, we're not ok. */
4639 spin_lock_irqsave(&h
->lock
, flags
);
4640 heartbeat
= readl(&h
->cfgtable
->HeartBeat
);
4641 spin_unlock_irqrestore(&h
->lock
, flags
);
4642 if (h
->last_heartbeat
== heartbeat
) {
4643 controller_lockup_detected(h
);
4648 h
->last_heartbeat
= heartbeat
;
4649 h
->last_heartbeat_timestamp
= now
;
4652 static int detect_controller_lockup_thread(void *notused
)
4654 struct ctlr_info
*h
;
4655 unsigned long flags
;
4658 struct list_head
*this, *tmp
;
4660 schedule_timeout_interruptible(HEARTBEAT_SAMPLE_INTERVAL
);
4661 if (kthread_should_stop())
4663 spin_lock_irqsave(&lockup_detector_lock
, flags
);
4664 list_for_each_safe(this, tmp
, &hpsa_ctlr_list
) {
4665 h
= list_entry(this, struct ctlr_info
, lockup_list
);
4666 detect_controller_lockup(h
);
4668 spin_unlock_irqrestore(&lockup_detector_lock
, flags
);
4673 static void add_ctlr_to_lockup_detector_list(struct ctlr_info
*h
)
4675 unsigned long flags
;
4677 h
->heartbeat_sample_interval
= HEARTBEAT_SAMPLE_INTERVAL
;
4678 spin_lock_irqsave(&lockup_detector_lock
, flags
);
4679 list_add_tail(&h
->lockup_list
, &hpsa_ctlr_list
);
4680 spin_unlock_irqrestore(&lockup_detector_lock
, flags
);
4683 static void start_controller_lockup_detector(struct ctlr_info
*h
)
4685 /* Start the lockup detector thread if not already started */
4686 if (!hpsa_lockup_detector
) {
4687 spin_lock_init(&lockup_detector_lock
);
4688 hpsa_lockup_detector
=
4689 kthread_run(detect_controller_lockup_thread
,
4692 if (!hpsa_lockup_detector
) {
4693 dev_warn(&h
->pdev
->dev
,
4694 "Could not start lockup detector thread\n");
4697 add_ctlr_to_lockup_detector_list(h
);
4700 static void stop_controller_lockup_detector(struct ctlr_info
*h
)
4702 unsigned long flags
;
4704 spin_lock_irqsave(&lockup_detector_lock
, flags
);
4705 remove_ctlr_from_lockup_detector_list(h
);
4706 /* If the list of ctlr's to monitor is empty, stop the thread */
4707 if (list_empty(&hpsa_ctlr_list
)) {
4708 spin_unlock_irqrestore(&lockup_detector_lock
, flags
);
4709 kthread_stop(hpsa_lockup_detector
);
4710 spin_lock_irqsave(&lockup_detector_lock
, flags
);
4711 hpsa_lockup_detector
= NULL
;
4713 spin_unlock_irqrestore(&lockup_detector_lock
, flags
);
4716 static int __devinit
hpsa_init_one(struct pci_dev
*pdev
,
4717 const struct pci_device_id
*ent
)
4720 struct ctlr_info
*h
;
4721 int try_soft_reset
= 0;
4722 unsigned long flags
;
4724 if (number_of_controllers
== 0)
4725 printk(KERN_INFO DRIVER_NAME
"\n");
4727 rc
= hpsa_init_reset_devices(pdev
);
4729 if (rc
!= -ENOTSUPP
)
4731 /* If the reset fails in a particular way (it has no way to do
4732 * a proper hard reset, so returns -ENOTSUPP) we can try to do
4733 * a soft reset once we get the controller configured up to the
4734 * point that it can accept a command.
4740 reinit_after_soft_reset
:
4742 /* Command structures must be aligned on a 32-byte boundary because
4743 * the 5 lower bits of the address are used by the hardware. and by
4744 * the driver. See comments in hpsa.h for more info.
4746 #define COMMANDLIST_ALIGNMENT 32
4747 BUILD_BUG_ON(sizeof(struct CommandList
) % COMMANDLIST_ALIGNMENT
);
4748 h
= kzalloc(sizeof(*h
), GFP_KERNEL
);
4753 h
->intr_mode
= hpsa_simple_mode
? SIMPLE_MODE_INT
: PERF_MODE_INT
;
4754 INIT_LIST_HEAD(&h
->cmpQ
);
4755 INIT_LIST_HEAD(&h
->reqQ
);
4756 spin_lock_init(&h
->lock
);
4757 spin_lock_init(&h
->scan_lock
);
4758 rc
= hpsa_pci_init(h
);
4762 sprintf(h
->devname
, HPSA
"%d", number_of_controllers
);
4763 h
->ctlr
= number_of_controllers
;
4764 number_of_controllers
++;
4766 /* configure PCI DMA stuff */
4767 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(64));
4771 rc
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
4775 dev_err(&pdev
->dev
, "no suitable DMA available\n");
4780 /* make sure the board interrupts are off */
4781 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4783 if (hpsa_request_irq(h
, do_hpsa_intr_msi
, do_hpsa_intr_intx
))
4785 dev_info(&pdev
->dev
, "%s: <0x%x> at IRQ %d%s using DAC\n",
4786 h
->devname
, pdev
->device
,
4787 h
->intr
[h
->intr_mode
], dac
? "" : " not");
4788 if (hpsa_allocate_cmd_pool(h
))
4790 if (hpsa_allocate_sg_chain_blocks(h
))
4792 init_waitqueue_head(&h
->scan_wait_queue
);
4793 h
->scan_finished
= 1; /* no scan currently in progress */
4795 pci_set_drvdata(pdev
, h
);
4797 h
->scsi_host
= NULL
;
4798 spin_lock_init(&h
->devlock
);
4799 hpsa_put_ctlr_into_performant_mode(h
);
4801 /* At this point, the controller is ready to take commands.
4802 * Now, if reset_devices and the hard reset didn't work, try
4803 * the soft reset and see if that works.
4805 if (try_soft_reset
) {
4807 /* This is kind of gross. We may or may not get a completion
4808 * from the soft reset command, and if we do, then the value
4809 * from the fifo may or may not be valid. So, we wait 10 secs
4810 * after the reset throwing away any completions we get during
4811 * that time. Unregister the interrupt handler and register
4812 * fake ones to scoop up any residual completions.
4814 spin_lock_irqsave(&h
->lock
, flags
);
4815 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4816 spin_unlock_irqrestore(&h
->lock
, flags
);
4818 rc
= hpsa_request_irq(h
, hpsa_msix_discard_completions
,
4819 hpsa_intx_discard_completions
);
4821 dev_warn(&h
->pdev
->dev
, "Failed to request_irq after "
4826 rc
= hpsa_kdump_soft_reset(h
);
4828 /* Neither hard nor soft reset worked, we're hosed. */
4831 dev_info(&h
->pdev
->dev
, "Board READY.\n");
4832 dev_info(&h
->pdev
->dev
,
4833 "Waiting for stale completions to drain.\n");
4834 h
->access
.set_intr_mask(h
, HPSA_INTR_ON
);
4836 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4838 rc
= controller_reset_failed(h
->cfgtable
);
4840 dev_info(&h
->pdev
->dev
,
4841 "Soft reset appears to have failed.\n");
4843 /* since the controller's reset, we have to go back and re-init
4844 * everything. Easiest to just forget what we've done and do it
4847 hpsa_undo_allocations_after_kdump_soft_reset(h
);
4850 /* don't go to clean4, we already unallocated */
4853 goto reinit_after_soft_reset
;
4856 /* Turn the interrupts on so we can service requests */
4857 h
->access
.set_intr_mask(h
, HPSA_INTR_ON
);
4859 hpsa_hba_inquiry(h
);
4860 hpsa_register_scsi(h
); /* hook ourselves into SCSI subsystem */
4861 start_controller_lockup_detector(h
);
4865 hpsa_free_sg_chain_blocks(h
);
4866 hpsa_free_cmd_pool(h
);
4874 static void hpsa_flush_cache(struct ctlr_info
*h
)
4877 struct CommandList
*c
;
4879 flush_buf
= kzalloc(4, GFP_KERNEL
);
4883 c
= cmd_special_alloc(h
);
4885 dev_warn(&h
->pdev
->dev
, "cmd_special_alloc returned NULL!\n");
4888 fill_cmd(c
, HPSA_CACHE_FLUSH
, h
, flush_buf
, 4, 0,
4889 RAID_CTLR_LUNID
, TYPE_CMD
);
4890 hpsa_scsi_do_simple_cmd_with_retry(h
, c
, PCI_DMA_TODEVICE
);
4891 if (c
->err_info
->CommandStatus
!= 0)
4892 dev_warn(&h
->pdev
->dev
,
4893 "error flushing cache on controller\n");
4894 cmd_special_free(h
, c
);
4899 static void hpsa_shutdown(struct pci_dev
*pdev
)
4901 struct ctlr_info
*h
;
4903 h
= pci_get_drvdata(pdev
);
4904 /* Turn board interrupts off and send the flush cache command
4905 * sendcmd will turn off interrupt, and send the flush...
4906 * To write all data in the battery backed cache to disks
4908 hpsa_flush_cache(h
);
4909 h
->access
.set_intr_mask(h
, HPSA_INTR_OFF
);
4910 hpsa_free_irqs_and_disable_msix(h
);
4913 static void __devexit
hpsa_free_device_info(struct ctlr_info
*h
)
4917 for (i
= 0; i
< h
->ndevices
; i
++)
4921 static void __devexit
hpsa_remove_one(struct pci_dev
*pdev
)
4923 struct ctlr_info
*h
;
4925 if (pci_get_drvdata(pdev
) == NULL
) {
4926 dev_err(&pdev
->dev
, "unable to remove device\n");
4929 h
= pci_get_drvdata(pdev
);
4930 stop_controller_lockup_detector(h
);
4931 hpsa_unregister_scsi(h
); /* unhook from SCSI subsystem */
4932 hpsa_shutdown(pdev
);
4934 iounmap(h
->transtable
);
4935 iounmap(h
->cfgtable
);
4936 hpsa_free_device_info(h
);
4937 hpsa_free_sg_chain_blocks(h
);
4938 pci_free_consistent(h
->pdev
,
4939 h
->nr_cmds
* sizeof(struct CommandList
),
4940 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4941 pci_free_consistent(h
->pdev
,
4942 h
->nr_cmds
* sizeof(struct ErrorInfo
),
4943 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
4944 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
4945 h
->reply_pool
, h
->reply_pool_dhandle
);
4946 kfree(h
->cmd_pool_bits
);
4947 kfree(h
->blockFetchTable
);
4948 kfree(h
->hba_inquiry_data
);
4949 pci_disable_device(pdev
);
4950 pci_release_regions(pdev
);
4951 pci_set_drvdata(pdev
, NULL
);
4955 static int hpsa_suspend(__attribute__((unused
)) struct pci_dev
*pdev
,
4956 __attribute__((unused
)) pm_message_t state
)
4961 static int hpsa_resume(__attribute__((unused
)) struct pci_dev
*pdev
)
4966 static struct pci_driver hpsa_pci_driver
= {
4968 .probe
= hpsa_init_one
,
4969 .remove
= __devexit_p(hpsa_remove_one
),
4970 .id_table
= hpsa_pci_device_id
, /* id_table */
4971 .shutdown
= hpsa_shutdown
,
4972 .suspend
= hpsa_suspend
,
4973 .resume
= hpsa_resume
,
4976 /* Fill in bucket_map[], given nsgs (the max number of
4977 * scatter gather elements supported) and bucket[],
4978 * which is an array of 8 integers. The bucket[] array
4979 * contains 8 different DMA transfer sizes (in 16
4980 * byte increments) which the controller uses to fetch
4981 * commands. This function fills in bucket_map[], which
4982 * maps a given number of scatter gather elements to one of
4983 * the 8 DMA transfer sizes. The point of it is to allow the
4984 * controller to only do as much DMA as needed to fetch the
4985 * command, with the DMA transfer size encoded in the lower
4986 * bits of the command address.
4988 static void calc_bucket_map(int bucket
[], int num_buckets
,
4989 int nsgs
, int *bucket_map
)
4993 /* even a command with 0 SGs requires 4 blocks */
4994 #define MINIMUM_TRANSFER_BLOCKS 4
4995 #define NUM_BUCKETS 8
4996 /* Note, bucket_map must have nsgs+1 entries. */
4997 for (i
= 0; i
<= nsgs
; i
++) {
4998 /* Compute size of a command with i SG entries */
4999 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
5000 b
= num_buckets
; /* Assume the biggest bucket */
5001 /* Find the bucket that is just big enough */
5002 for (j
= 0; j
< 8; j
++) {
5003 if (bucket
[j
] >= size
) {
5008 /* for a command with i SG entries, use bucket b. */
5013 static __devinit
void hpsa_enter_performant_mode(struct ctlr_info
*h
,
5017 unsigned long register_value
;
5019 /* This is a bit complicated. There are 8 registers on
5020 * the controller which we write to to tell it 8 different
5021 * sizes of commands which there may be. It's a way of
5022 * reducing the DMA done to fetch each command. Encoded into
5023 * each command's tag are 3 bits which communicate to the controller
5024 * which of the eight sizes that command fits within. The size of
5025 * each command depends on how many scatter gather entries there are.
5026 * Each SG entry requires 16 bytes. The eight registers are programmed
5027 * with the number of 16-byte blocks a command of that size requires.
5028 * The smallest command possible requires 5 such 16 byte blocks.
5029 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
5030 * blocks. Note, this only extends to the SG entries contained
5031 * within the command block, and does not extend to chained blocks
5032 * of SG elements. bft[] contains the eight values we write to
5033 * the registers. They are not evenly distributed, but have more
5034 * sizes for small commands, and fewer sizes for larger commands.
5036 int bft
[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD
+ 4};
5037 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD
+ 4);
5038 /* 5 = 1 s/g entry or 4k
5039 * 6 = 2 s/g entry or 8k
5040 * 8 = 4 s/g entry or 16k
5041 * 10 = 6 s/g entry or 24k
5044 /* Controller spec: zero out this buffer. */
5045 memset(h
->reply_pool
, 0, h
->reply_pool_size
);
5047 bft
[7] = SG_ENTRIES_IN_CMD
+ 4;
5048 calc_bucket_map(bft
, ARRAY_SIZE(bft
),
5049 SG_ENTRIES_IN_CMD
, h
->blockFetchTable
);
5050 for (i
= 0; i
< 8; i
++)
5051 writel(bft
[i
], &h
->transtable
->BlockFetch
[i
]);
5053 /* size of controller ring buffer */
5054 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
5055 writel(h
->nreply_queues
, &h
->transtable
->RepQCount
);
5056 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
5057 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
5059 for (i
= 0; i
< h
->nreply_queues
; i
++) {
5060 writel(0, &h
->transtable
->RepQAddr
[i
].upper
);
5061 writel(h
->reply_pool_dhandle
+
5062 (h
->max_commands
* sizeof(u64
) * i
),
5063 &h
->transtable
->RepQAddr
[i
].lower
);
5066 writel(CFGTBL_Trans_Performant
| use_short_tags
|
5067 CFGTBL_Trans_enable_directed_msix
,
5068 &(h
->cfgtable
->HostWrite
.TransportRequest
));
5069 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
5070 hpsa_wait_for_mode_change_ack(h
);
5071 register_value
= readl(&(h
->cfgtable
->TransportActive
));
5072 if (!(register_value
& CFGTBL_Trans_Performant
)) {
5073 dev_warn(&h
->pdev
->dev
, "unable to get board into"
5074 " performant mode\n");
5077 /* Change the access methods to the performant access methods */
5078 h
->access
= SA5_performant_access
;
5079 h
->transMethod
= CFGTBL_Trans_Performant
;
5082 static __devinit
void hpsa_put_ctlr_into_performant_mode(struct ctlr_info
*h
)
5087 if (hpsa_simple_mode
)
5090 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
5091 if (!(trans_support
& PERFORMANT_MODE
))
5094 h
->nreply_queues
= h
->msix_vector
? MAX_REPLY_QUEUES
: 1;
5095 hpsa_get_max_perf_mode_cmds(h
);
5096 /* Performant mode ring buffer and supporting data structures */
5097 h
->reply_pool_size
= h
->max_commands
* sizeof(u64
) * h
->nreply_queues
;
5098 h
->reply_pool
= pci_alloc_consistent(h
->pdev
, h
->reply_pool_size
,
5099 &(h
->reply_pool_dhandle
));
5101 for (i
= 0; i
< h
->nreply_queues
; i
++) {
5102 h
->reply_queue
[i
].head
= &h
->reply_pool
[h
->max_commands
* i
];
5103 h
->reply_queue
[i
].size
= h
->max_commands
;
5104 h
->reply_queue
[i
].wraparound
= 1; /* spec: init to 1 */
5105 h
->reply_queue
[i
].current_entry
= 0;
5108 /* Need a block fetch table for performant mode */
5109 h
->blockFetchTable
= kmalloc(((SG_ENTRIES_IN_CMD
+ 1) *
5110 sizeof(u32
)), GFP_KERNEL
);
5112 if ((h
->reply_pool
== NULL
)
5113 || (h
->blockFetchTable
== NULL
))
5116 hpsa_enter_performant_mode(h
,
5117 trans_support
& CFGTBL_Trans_use_short_tags
);
5123 pci_free_consistent(h
->pdev
, h
->reply_pool_size
,
5124 h
->reply_pool
, h
->reply_pool_dhandle
);
5125 kfree(h
->blockFetchTable
);
5129 * This is it. Register the PCI driver information for the cards we control
5130 * the OS will call our registered routines when it finds one of our cards.
5132 static int __init
hpsa_init(void)
5134 return pci_register_driver(&hpsa_pci_driver
);
5137 static void __exit
hpsa_cleanup(void)
5139 pci_unregister_driver(&hpsa_pci_driver
);
5142 module_init(hpsa_init
);
5143 module_exit(hpsa_cleanup
);