Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
bd4f36d6 MM |
2 | * Disk Array driver for HP Smart Array controllers. |
3 | * (C) Copyright 2000, 2007 Hewlett-Packard Development Company, L.P. | |
1da177e4 LT |
4 | * |
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 | |
bd4f36d6 | 7 | * the Free Software Foundation; version 2 of the License. |
1da177e4 LT |
8 | * |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
bd4f36d6 MM |
11 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * General Public License for more details. | |
1da177e4 LT |
13 | * |
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 | |
bd4f36d6 MM |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
17 | * 02111-1307, USA. | |
1da177e4 LT |
18 | * |
19 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com | |
20 | * | |
21 | */ | |
22 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/types.h> | |
26 | #include <linux/pci.h> | |
27 | #include <linux/kernel.h> | |
28 | #include <linux/slab.h> | |
405f5571 | 29 | #include <linux/smp_lock.h> |
1da177e4 LT |
30 | #include <linux/delay.h> |
31 | #include <linux/major.h> | |
32 | #include <linux/fs.h> | |
33 | #include <linux/bio.h> | |
34 | #include <linux/blkpg.h> | |
35 | #include <linux/timer.h> | |
36 | #include <linux/proc_fs.h> | |
89b6e743 | 37 | #include <linux/seq_file.h> |
7c832835 | 38 | #include <linux/init.h> |
4d761609 | 39 | #include <linux/jiffies.h> |
1da177e4 LT |
40 | #include <linux/hdreg.h> |
41 | #include <linux/spinlock.h> | |
42 | #include <linux/compat.h> | |
b368c9dd | 43 | #include <linux/mutex.h> |
1da177e4 LT |
44 | #include <asm/uaccess.h> |
45 | #include <asm/io.h> | |
46 | ||
eb0df996 | 47 | #include <linux/dma-mapping.h> |
1da177e4 LT |
48 | #include <linux/blkdev.h> |
49 | #include <linux/genhd.h> | |
50 | #include <linux/completion.h> | |
d5d3b736 | 51 | #include <scsi/scsi.h> |
03bbfee5 MMOD |
52 | #include <scsi/sg.h> |
53 | #include <scsi/scsi_ioctl.h> | |
54 | #include <linux/cdrom.h> | |
231bc2a2 | 55 | #include <linux/scatterlist.h> |
0a9279cc | 56 | #include <linux/kthread.h> |
1da177e4 LT |
57 | |
58 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) | |
24aac480 MM |
59 | #define DRIVER_NAME "HP CISS Driver (v 3.6.20)" |
60 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 20) | |
1da177e4 LT |
61 | |
62 | /* Embedded module documentation macros - see modules.h */ | |
63 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
24aac480 | 64 | MODULE_DESCRIPTION("Driver for HP Smart Array Controllers"); |
1da177e4 | 65 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
24aac480 MM |
66 | " SA6i P600 P800 P400 P400i E200 E200i E500 P700m" |
67 | " Smart Array G2 Series SAS/SATA Controllers"); | |
68 | MODULE_VERSION("3.6.20"); | |
1da177e4 LT |
69 | MODULE_LICENSE("GPL"); |
70 | ||
71 | #include "cciss_cmd.h" | |
72 | #include "cciss.h" | |
73 | #include <linux/cciss_ioctl.h> | |
74 | ||
75 | /* define the PCI info for the cards we can control */ | |
76 | static const struct pci_device_id cciss_pci_device_id[] = { | |
f82ccdb9 BH |
77 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
78 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, | |
79 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, | |
80 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, | |
81 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, | |
82 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, | |
83 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, | |
84 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, | |
85 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, | |
86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, | |
87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, | |
88 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, | |
89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, | |
90 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, | |
91 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, | |
92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, | |
93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, | |
94 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, | |
de923916 | 95 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, |
9cff3b38 | 96 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
24aac480 MM |
97 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, |
98 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, | |
99 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, | |
100 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, | |
101 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, | |
77ca7286 MM |
102 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A}, |
103 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B}, | |
4ff9a9a4 MM |
104 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
105 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, | |
1da177e4 LT |
106 | {0,} |
107 | }; | |
7c832835 | 108 | |
1da177e4 LT |
109 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
110 | ||
1da177e4 LT |
111 | /* board_id = Subsystem Device ID & Vendor ID |
112 | * product = Marketing Name for the board | |
7c832835 | 113 | * access = Address of the struct of function pointers |
1da177e4 LT |
114 | */ |
115 | static struct board_type products[] = { | |
49153998 MM |
116 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
117 | {0x40800E11, "Smart Array 5i", &SA5B_access}, | |
118 | {0x40820E11, "Smart Array 532", &SA5B_access}, | |
119 | {0x40830E11, "Smart Array 5312", &SA5B_access}, | |
120 | {0x409A0E11, "Smart Array 641", &SA5_access}, | |
121 | {0x409B0E11, "Smart Array 642", &SA5_access}, | |
122 | {0x409C0E11, "Smart Array 6400", &SA5_access}, | |
123 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, | |
124 | {0x40910E11, "Smart Array 6i", &SA5_access}, | |
125 | {0x3225103C, "Smart Array P600", &SA5_access}, | |
126 | {0x3223103C, "Smart Array P800", &SA5_access}, | |
127 | {0x3234103C, "Smart Array P400", &SA5_access}, | |
128 | {0x3235103C, "Smart Array P400i", &SA5_access}, | |
129 | {0x3211103C, "Smart Array E200i", &SA5_access}, | |
130 | {0x3212103C, "Smart Array E200", &SA5_access}, | |
131 | {0x3213103C, "Smart Array E200i", &SA5_access}, | |
132 | {0x3214103C, "Smart Array E200i", &SA5_access}, | |
133 | {0x3215103C, "Smart Array E200i", &SA5_access}, | |
134 | {0x3237103C, "Smart Array E500", &SA5_access}, | |
135 | {0x323D103C, "Smart Array P700m", &SA5_access}, | |
136 | {0x3241103C, "Smart Array P212", &SA5_access}, | |
137 | {0x3243103C, "Smart Array P410", &SA5_access}, | |
138 | {0x3245103C, "Smart Array P410i", &SA5_access}, | |
139 | {0x3247103C, "Smart Array P411", &SA5_access}, | |
140 | {0x3249103C, "Smart Array P812", &SA5_access}, | |
77ca7286 MM |
141 | {0x324A103C, "Smart Array P712m", &SA5_access}, |
142 | {0x324B103C, "Smart Array P711m", &SA5_access}, | |
49153998 | 143 | {0xFFFF103C, "Unknown Smart Array", &SA5_access}, |
1da177e4 LT |
144 | }; |
145 | ||
d14c4ab5 | 146 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
7c832835 | 147 | #define MAX_CONFIG_WAIT 30000 |
1da177e4 LT |
148 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
149 | ||
150 | /*define how many times we will try a command because of bus resets */ | |
151 | #define MAX_CMD_RETRIES 3 | |
152 | ||
1da177e4 LT |
153 | #define MAX_CTLR 32 |
154 | ||
155 | /* Originally cciss driver only supports 8 major numbers */ | |
156 | #define MAX_CTLR_ORIG 8 | |
157 | ||
1da177e4 LT |
158 | static ctlr_info_t *hba[MAX_CTLR]; |
159 | ||
b368c9dd AP |
160 | static struct task_struct *cciss_scan_thread; |
161 | static DEFINE_MUTEX(scan_mutex); | |
162 | static LIST_HEAD(scan_q); | |
163 | ||
165125e1 | 164 | static void do_cciss_request(struct request_queue *q); |
7d12e780 | 165 | static irqreturn_t do_cciss_intr(int irq, void *dev_id); |
ef7822c2 AV |
166 | static int cciss_open(struct block_device *bdev, fmode_t mode); |
167 | static int cciss_release(struct gendisk *disk, fmode_t mode); | |
168 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, | |
7c832835 | 169 | unsigned int cmd, unsigned long arg); |
a885c8c4 | 170 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 | 171 | |
1da177e4 | 172 | static int cciss_revalidate(struct gendisk *disk); |
2d11d993 | 173 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, int via_ioctl); |
a0ea8622 | 174 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
2d11d993 | 175 | int clear_all, int via_ioctl); |
1da177e4 | 176 | |
00988a35 MMOD |
177 | static void cciss_read_capacity(int ctlr, int logvol, int withirq, |
178 | sector_t *total_size, unsigned int *block_size); | |
179 | static void cciss_read_capacity_16(int ctlr, int logvol, int withirq, | |
180 | sector_t *total_size, unsigned int *block_size); | |
181 | static void cciss_geometry_inquiry(int ctlr, int logvol, | |
182 | int withirq, sector_t total_size, | |
183 | unsigned int block_size, InquiryData_struct *inq_buff, | |
7c832835 | 184 | drive_info_struct *drv); |
7c832835 BH |
185 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
186 | __u32); | |
187 | static void start_io(ctlr_info_t *h); | |
188 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, | |
7c832835 BH |
189 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); |
190 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, | |
b57695fe | 191 | __u8 page_code, unsigned char scsi3addr[], |
192 | int cmd_type); | |
85cc61ae | 193 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
194 | int attempt_retry); | |
195 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c); | |
1da177e4 | 196 | |
33079b21 | 197 | static void fail_all_cmds(unsigned long ctlr); |
d6f4965d | 198 | static int add_to_scan_list(struct ctlr_info *h); |
0a9279cc MM |
199 | static int scan_thread(void *data); |
200 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c); | |
617e1344 SC |
201 | static void cciss_hba_release(struct device *dev); |
202 | static void cciss_device_release(struct device *dev); | |
361e9b07 | 203 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index); |
9cef0d2f | 204 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index); |
33079b21 | 205 | |
1da177e4 | 206 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
207 | static void cciss_procinit(int i); |
208 | #else | |
7c832835 BH |
209 | static void cciss_procinit(int i) |
210 | { | |
211 | } | |
212 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
213 | |
214 | #ifdef CONFIG_COMPAT | |
ef7822c2 AV |
215 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
216 | unsigned, unsigned long); | |
1da177e4 LT |
217 | #endif |
218 | ||
83d5cde4 | 219 | static const struct block_device_operations cciss_fops = { |
7c832835 | 220 | .owner = THIS_MODULE, |
ef7822c2 AV |
221 | .open = cciss_open, |
222 | .release = cciss_release, | |
223 | .locked_ioctl = cciss_ioctl, | |
7c832835 | 224 | .getgeo = cciss_getgeo, |
1da177e4 | 225 | #ifdef CONFIG_COMPAT |
ef7822c2 | 226 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 227 | #endif |
7c832835 | 228 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
229 | }; |
230 | ||
231 | /* | |
232 | * Enqueuing and dequeuing functions for cmdlists. | |
233 | */ | |
8a3173de | 234 | static inline void addQ(struct hlist_head *list, CommandList_struct *c) |
1da177e4 | 235 | { |
8a3173de | 236 | hlist_add_head(&c->list, list); |
1da177e4 LT |
237 | } |
238 | ||
8a3173de | 239 | static inline void removeQ(CommandList_struct *c) |
1da177e4 | 240 | { |
b59e64d0 HR |
241 | /* |
242 | * After kexec/dump some commands might still | |
243 | * be in flight, which the firmware will try | |
244 | * to complete. Resetting the firmware doesn't work | |
245 | * with old fw revisions, so we have to mark | |
246 | * them off as 'stale' to prevent the driver from | |
247 | * falling over. | |
248 | */ | |
249 | if (WARN_ON(hlist_unhashed(&c->list))) { | |
250 | c->cmd_type = CMD_MSG_STALE; | |
8a3173de | 251 | return; |
b59e64d0 | 252 | } |
8a3173de JA |
253 | |
254 | hlist_del_init(&c->list); | |
1da177e4 LT |
255 | } |
256 | ||
257 | #include "cciss_scsi.c" /* For SCSI tape support */ | |
258 | ||
259 | #ifdef CONFIG_PROC_FS | |
260 | ||
261 | /* | |
262 | * Report information about this controller. | |
263 | */ | |
264 | #define ENG_GIG 1000000000 | |
265 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
89b6e743 | 266 | #define ENGAGE_SCSI "engage scsi" |
7c832835 BH |
267 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
268 | "UNKNOWN" | |
269 | }; | |
fa52bec9 | 270 | #define RAID_UNKNOWN (sizeof(raid_label) / sizeof(raid_label[0])-1) |
1da177e4 LT |
271 | |
272 | static struct proc_dir_entry *proc_cciss; | |
273 | ||
89b6e743 | 274 | static void cciss_seq_show_header(struct seq_file *seq) |
1da177e4 | 275 | { |
89b6e743 MM |
276 | ctlr_info_t *h = seq->private; |
277 | ||
278 | seq_printf(seq, "%s: HP %s Controller\n" | |
279 | "Board ID: 0x%08lx\n" | |
280 | "Firmware Version: %c%c%c%c\n" | |
281 | "IRQ: %d\n" | |
282 | "Logical drives: %d\n" | |
283 | "Current Q depth: %d\n" | |
284 | "Current # commands on controller: %d\n" | |
285 | "Max Q depth since init: %d\n" | |
286 | "Max # commands on controller since init: %d\n" | |
287 | "Max SG entries since init: %d\n", | |
288 | h->devname, | |
289 | h->product_name, | |
290 | (unsigned long)h->board_id, | |
291 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
292 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], | |
293 | h->num_luns, | |
294 | h->Qdepth, h->commands_outstanding, | |
295 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
296 | ||
297 | #ifdef CONFIG_CISS_SCSI_TAPE | |
298 | cciss_seq_tape_report(seq, h->ctlr); | |
299 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
300 | } | |
1da177e4 | 301 | |
89b6e743 MM |
302 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
303 | { | |
304 | ctlr_info_t *h = seq->private; | |
305 | unsigned ctlr = h->ctlr; | |
306 | unsigned long flags; | |
1da177e4 LT |
307 | |
308 | /* prevent displaying bogus info during configuration | |
309 | * or deconfiguration of a logical volume | |
310 | */ | |
311 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
312 | if (h->busy_configuring) { | |
313 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
89b6e743 | 314 | return ERR_PTR(-EBUSY); |
1da177e4 LT |
315 | } |
316 | h->busy_configuring = 1; | |
317 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
318 | ||
89b6e743 MM |
319 | if (*pos == 0) |
320 | cciss_seq_show_header(seq); | |
321 | ||
322 | return pos; | |
323 | } | |
324 | ||
325 | static int cciss_seq_show(struct seq_file *seq, void *v) | |
326 | { | |
327 | sector_t vol_sz, vol_sz_frac; | |
328 | ctlr_info_t *h = seq->private; | |
329 | unsigned ctlr = h->ctlr; | |
330 | loff_t *pos = v; | |
9cef0d2f | 331 | drive_info_struct *drv = h->drv[*pos]; |
89b6e743 MM |
332 | |
333 | if (*pos > h->highest_lun) | |
334 | return 0; | |
335 | ||
336 | if (drv->heads == 0) | |
337 | return 0; | |
338 | ||
339 | vol_sz = drv->nr_blocks; | |
340 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
341 | vol_sz_frac *= 100; | |
342 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
343 | ||
fa52bec9 | 344 | if (drv->raid_level < 0 || drv->raid_level > RAID_UNKNOWN) |
89b6e743 MM |
345 | drv->raid_level = RAID_UNKNOWN; |
346 | seq_printf(seq, "cciss/c%dd%d:" | |
347 | "\t%4u.%02uGB\tRAID %s\n", | |
348 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, | |
349 | raid_label[drv->raid_level]); | |
350 | return 0; | |
351 | } | |
352 | ||
353 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
354 | { | |
355 | ctlr_info_t *h = seq->private; | |
356 | ||
357 | if (*pos > h->highest_lun) | |
358 | return NULL; | |
359 | *pos += 1; | |
360 | ||
361 | return pos; | |
362 | } | |
363 | ||
364 | static void cciss_seq_stop(struct seq_file *seq, void *v) | |
365 | { | |
366 | ctlr_info_t *h = seq->private; | |
367 | ||
368 | /* Only reset h->busy_configuring if we succeeded in setting | |
369 | * it during cciss_seq_start. */ | |
370 | if (v == ERR_PTR(-EBUSY)) | |
371 | return; | |
7c832835 | 372 | |
1da177e4 | 373 | h->busy_configuring = 0; |
1da177e4 LT |
374 | } |
375 | ||
88e9d34c | 376 | static const struct seq_operations cciss_seq_ops = { |
89b6e743 MM |
377 | .start = cciss_seq_start, |
378 | .show = cciss_seq_show, | |
379 | .next = cciss_seq_next, | |
380 | .stop = cciss_seq_stop, | |
381 | }; | |
382 | ||
383 | static int cciss_seq_open(struct inode *inode, struct file *file) | |
384 | { | |
385 | int ret = seq_open(file, &cciss_seq_ops); | |
386 | struct seq_file *seq = file->private_data; | |
387 | ||
388 | if (!ret) | |
389 | seq->private = PDE(inode)->data; | |
390 | ||
391 | return ret; | |
392 | } | |
393 | ||
394 | static ssize_t | |
395 | cciss_proc_write(struct file *file, const char __user *buf, | |
396 | size_t length, loff_t *ppos) | |
1da177e4 | 397 | { |
89b6e743 MM |
398 | int err; |
399 | char *buffer; | |
400 | ||
401 | #ifndef CONFIG_CISS_SCSI_TAPE | |
402 | return -EINVAL; | |
1da177e4 LT |
403 | #endif |
404 | ||
89b6e743 | 405 | if (!buf || length > PAGE_SIZE - 1) |
7c832835 | 406 | return -EINVAL; |
89b6e743 MM |
407 | |
408 | buffer = (char *)__get_free_page(GFP_KERNEL); | |
409 | if (!buffer) | |
410 | return -ENOMEM; | |
411 | ||
412 | err = -EFAULT; | |
413 | if (copy_from_user(buffer, buf, length)) | |
414 | goto out; | |
415 | buffer[length] = '\0'; | |
416 | ||
417 | #ifdef CONFIG_CISS_SCSI_TAPE | |
418 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { | |
419 | struct seq_file *seq = file->private_data; | |
420 | ctlr_info_t *h = seq->private; | |
421 | int rc; | |
422 | ||
7c832835 BH |
423 | rc = cciss_engage_scsi(h->ctlr); |
424 | if (rc != 0) | |
89b6e743 MM |
425 | err = -rc; |
426 | else | |
427 | err = length; | |
428 | } else | |
429 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
430 | err = -EINVAL; | |
7c832835 BH |
431 | /* might be nice to have "disengage" too, but it's not |
432 | safely possible. (only 1 module use count, lock issues.) */ | |
89b6e743 MM |
433 | |
434 | out: | |
435 | free_page((unsigned long)buffer); | |
436 | return err; | |
1da177e4 LT |
437 | } |
438 | ||
89b6e743 MM |
439 | static struct file_operations cciss_proc_fops = { |
440 | .owner = THIS_MODULE, | |
441 | .open = cciss_seq_open, | |
442 | .read = seq_read, | |
443 | .llseek = seq_lseek, | |
444 | .release = seq_release, | |
445 | .write = cciss_proc_write, | |
446 | }; | |
447 | ||
1da177e4 LT |
448 | static void __devinit cciss_procinit(int i) |
449 | { | |
450 | struct proc_dir_entry *pde; | |
451 | ||
89b6e743 | 452 | if (proc_cciss == NULL) |
928b4d8c | 453 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
89b6e743 MM |
454 | if (!proc_cciss) |
455 | return; | |
3dfcf9c4 | 456 | pde = proc_create_data(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
89b6e743 | 457 | S_IROTH, proc_cciss, |
3dfcf9c4 | 458 | &cciss_proc_fops, hba[i]); |
1da177e4 | 459 | } |
7c832835 | 460 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 461 | |
7fe06326 AP |
462 | #define MAX_PRODUCT_NAME_LEN 19 |
463 | ||
464 | #define to_hba(n) container_of(n, struct ctlr_info, dev) | |
9cef0d2f | 465 | #define to_drv(n) container_of(n, drive_info_struct, dev) |
7fe06326 | 466 | |
d6f4965d AP |
467 | static ssize_t host_store_rescan(struct device *dev, |
468 | struct device_attribute *attr, | |
469 | const char *buf, size_t count) | |
470 | { | |
471 | struct ctlr_info *h = to_hba(dev); | |
472 | ||
473 | add_to_scan_list(h); | |
474 | wake_up_process(cciss_scan_thread); | |
475 | wait_for_completion_interruptible(&h->scan_wait); | |
476 | ||
477 | return count; | |
478 | } | |
479 | DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); | |
7fe06326 AP |
480 | |
481 | static ssize_t dev_show_unique_id(struct device *dev, | |
482 | struct device_attribute *attr, | |
483 | char *buf) | |
484 | { | |
9cef0d2f SC |
485 | drive_info_struct *drv = to_drv(dev); |
486 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
7fe06326 AP |
487 | __u8 sn[16]; |
488 | unsigned long flags; | |
489 | int ret = 0; | |
490 | ||
491 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
492 | if (h->busy_configuring) | |
493 | ret = -EBUSY; | |
494 | else | |
495 | memcpy(sn, drv->serial_no, sizeof(sn)); | |
496 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
497 | ||
498 | if (ret) | |
499 | return ret; | |
500 | else | |
501 | return snprintf(buf, 16 * 2 + 2, | |
502 | "%02X%02X%02X%02X%02X%02X%02X%02X" | |
503 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", | |
504 | sn[0], sn[1], sn[2], sn[3], | |
505 | sn[4], sn[5], sn[6], sn[7], | |
506 | sn[8], sn[9], sn[10], sn[11], | |
507 | sn[12], sn[13], sn[14], sn[15]); | |
508 | } | |
509 | DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); | |
510 | ||
511 | static ssize_t dev_show_vendor(struct device *dev, | |
512 | struct device_attribute *attr, | |
513 | char *buf) | |
514 | { | |
9cef0d2f SC |
515 | drive_info_struct *drv = to_drv(dev); |
516 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
7fe06326 AP |
517 | char vendor[VENDOR_LEN + 1]; |
518 | unsigned long flags; | |
519 | int ret = 0; | |
520 | ||
521 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
522 | if (h->busy_configuring) | |
523 | ret = -EBUSY; | |
524 | else | |
525 | memcpy(vendor, drv->vendor, VENDOR_LEN + 1); | |
526 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
527 | ||
528 | if (ret) | |
529 | return ret; | |
530 | else | |
531 | return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); | |
532 | } | |
533 | DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); | |
534 | ||
535 | static ssize_t dev_show_model(struct device *dev, | |
536 | struct device_attribute *attr, | |
537 | char *buf) | |
538 | { | |
9cef0d2f SC |
539 | drive_info_struct *drv = to_drv(dev); |
540 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
7fe06326 AP |
541 | char model[MODEL_LEN + 1]; |
542 | unsigned long flags; | |
543 | int ret = 0; | |
544 | ||
545 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
546 | if (h->busy_configuring) | |
547 | ret = -EBUSY; | |
548 | else | |
549 | memcpy(model, drv->model, MODEL_LEN + 1); | |
550 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
551 | ||
552 | if (ret) | |
553 | return ret; | |
554 | else | |
555 | return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); | |
556 | } | |
557 | DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); | |
558 | ||
559 | static ssize_t dev_show_rev(struct device *dev, | |
560 | struct device_attribute *attr, | |
561 | char *buf) | |
562 | { | |
9cef0d2f SC |
563 | drive_info_struct *drv = to_drv(dev); |
564 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
7fe06326 AP |
565 | char rev[REV_LEN + 1]; |
566 | unsigned long flags; | |
567 | int ret = 0; | |
568 | ||
569 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
570 | if (h->busy_configuring) | |
571 | ret = -EBUSY; | |
572 | else | |
573 | memcpy(rev, drv->rev, REV_LEN + 1); | |
574 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
575 | ||
576 | if (ret) | |
577 | return ret; | |
578 | else | |
579 | return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); | |
580 | } | |
581 | DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); | |
582 | ||
ce84a8ae SC |
583 | static ssize_t cciss_show_lunid(struct device *dev, |
584 | struct device_attribute *attr, char *buf) | |
585 | { | |
9cef0d2f SC |
586 | drive_info_struct *drv = to_drv(dev); |
587 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
ce84a8ae SC |
588 | unsigned long flags; |
589 | unsigned char lunid[8]; | |
590 | ||
591 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
592 | if (h->busy_configuring) { | |
593 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
594 | return -EBUSY; | |
595 | } | |
596 | if (!drv->heads) { | |
597 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
598 | return -ENOTTY; | |
599 | } | |
600 | memcpy(lunid, drv->LunID, sizeof(lunid)); | |
601 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
602 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
603 | lunid[0], lunid[1], lunid[2], lunid[3], | |
604 | lunid[4], lunid[5], lunid[6], lunid[7]); | |
605 | } | |
606 | DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL); | |
607 | ||
3ff1111d SC |
608 | static ssize_t cciss_show_raid_level(struct device *dev, |
609 | struct device_attribute *attr, char *buf) | |
610 | { | |
9cef0d2f SC |
611 | drive_info_struct *drv = to_drv(dev); |
612 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
3ff1111d SC |
613 | int raid; |
614 | unsigned long flags; | |
615 | ||
616 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
617 | if (h->busy_configuring) { | |
618 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
619 | return -EBUSY; | |
620 | } | |
621 | raid = drv->raid_level; | |
622 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
623 | if (raid < 0 || raid > RAID_UNKNOWN) | |
624 | raid = RAID_UNKNOWN; | |
625 | ||
626 | return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n", | |
627 | raid_label[raid]); | |
628 | } | |
629 | DEVICE_ATTR(raid_level, S_IRUGO, cciss_show_raid_level, NULL); | |
630 | ||
e272afec SC |
631 | static ssize_t cciss_show_usage_count(struct device *dev, |
632 | struct device_attribute *attr, char *buf) | |
633 | { | |
9cef0d2f SC |
634 | drive_info_struct *drv = to_drv(dev); |
635 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
e272afec SC |
636 | unsigned long flags; |
637 | int count; | |
638 | ||
639 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
640 | if (h->busy_configuring) { | |
641 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
642 | return -EBUSY; | |
643 | } | |
644 | count = drv->usage_count; | |
645 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
646 | return snprintf(buf, 20, "%d\n", count); | |
647 | } | |
648 | DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL); | |
649 | ||
d6f4965d AP |
650 | static struct attribute *cciss_host_attrs[] = { |
651 | &dev_attr_rescan.attr, | |
652 | NULL | |
653 | }; | |
654 | ||
655 | static struct attribute_group cciss_host_attr_group = { | |
656 | .attrs = cciss_host_attrs, | |
657 | }; | |
658 | ||
9f792d9f | 659 | static const struct attribute_group *cciss_host_attr_groups[] = { |
d6f4965d AP |
660 | &cciss_host_attr_group, |
661 | NULL | |
662 | }; | |
663 | ||
664 | static struct device_type cciss_host_type = { | |
665 | .name = "cciss_host", | |
666 | .groups = cciss_host_attr_groups, | |
617e1344 | 667 | .release = cciss_hba_release, |
d6f4965d AP |
668 | }; |
669 | ||
7fe06326 AP |
670 | static struct attribute *cciss_dev_attrs[] = { |
671 | &dev_attr_unique_id.attr, | |
672 | &dev_attr_model.attr, | |
673 | &dev_attr_vendor.attr, | |
674 | &dev_attr_rev.attr, | |
ce84a8ae | 675 | &dev_attr_lunid.attr, |
3ff1111d | 676 | &dev_attr_raid_level.attr, |
e272afec | 677 | &dev_attr_usage_count.attr, |
7fe06326 AP |
678 | NULL |
679 | }; | |
680 | ||
681 | static struct attribute_group cciss_dev_attr_group = { | |
682 | .attrs = cciss_dev_attrs, | |
683 | }; | |
684 | ||
a4dbd674 | 685 | static const struct attribute_group *cciss_dev_attr_groups[] = { |
7fe06326 AP |
686 | &cciss_dev_attr_group, |
687 | NULL | |
688 | }; | |
689 | ||
690 | static struct device_type cciss_dev_type = { | |
691 | .name = "cciss_device", | |
692 | .groups = cciss_dev_attr_groups, | |
617e1344 | 693 | .release = cciss_device_release, |
7fe06326 AP |
694 | }; |
695 | ||
696 | static struct bus_type cciss_bus_type = { | |
697 | .name = "cciss", | |
698 | }; | |
699 | ||
617e1344 SC |
700 | /* |
701 | * cciss_hba_release is called when the reference count | |
702 | * of h->dev goes to zero. | |
703 | */ | |
704 | static void cciss_hba_release(struct device *dev) | |
705 | { | |
706 | /* | |
707 | * nothing to do, but need this to avoid a warning | |
708 | * about not having a release handler from lib/kref.c. | |
709 | */ | |
710 | } | |
7fe06326 AP |
711 | |
712 | /* | |
713 | * Initialize sysfs entry for each controller. This sets up and registers | |
714 | * the 'cciss#' directory for each individual controller under | |
715 | * /sys/bus/pci/devices/<dev>/. | |
716 | */ | |
717 | static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) | |
718 | { | |
719 | device_initialize(&h->dev); | |
720 | h->dev.type = &cciss_host_type; | |
721 | h->dev.bus = &cciss_bus_type; | |
722 | dev_set_name(&h->dev, "%s", h->devname); | |
723 | h->dev.parent = &h->pdev->dev; | |
724 | ||
725 | return device_add(&h->dev); | |
726 | } | |
727 | ||
728 | /* | |
729 | * Remove sysfs entries for an hba. | |
730 | */ | |
731 | static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) | |
732 | { | |
733 | device_del(&h->dev); | |
617e1344 SC |
734 | put_device(&h->dev); /* final put. */ |
735 | } | |
736 | ||
737 | /* cciss_device_release is called when the reference count | |
9cef0d2f | 738 | * of h->drv[x]dev goes to zero. |
617e1344 SC |
739 | */ |
740 | static void cciss_device_release(struct device *dev) | |
741 | { | |
9cef0d2f SC |
742 | drive_info_struct *drv = to_drv(dev); |
743 | kfree(drv); | |
7fe06326 AP |
744 | } |
745 | ||
746 | /* | |
747 | * Initialize sysfs for each logical drive. This sets up and registers | |
748 | * the 'c#d#' directory for each individual logical drive under | |
749 | * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from | |
750 | * /sys/block/cciss!c#d# to this entry. | |
751 | */ | |
617e1344 | 752 | static long cciss_create_ld_sysfs_entry(struct ctlr_info *h, |
7fe06326 AP |
753 | int drv_index) |
754 | { | |
617e1344 SC |
755 | struct device *dev; |
756 | ||
9cef0d2f | 757 | if (h->drv[drv_index]->device_initialized) |
8ce51966 SC |
758 | return 0; |
759 | ||
9cef0d2f | 760 | dev = &h->drv[drv_index]->dev; |
617e1344 SC |
761 | device_initialize(dev); |
762 | dev->type = &cciss_dev_type; | |
763 | dev->bus = &cciss_bus_type; | |
764 | dev_set_name(dev, "c%dd%d", h->ctlr, drv_index); | |
765 | dev->parent = &h->dev; | |
9cef0d2f | 766 | h->drv[drv_index]->device_initialized = 1; |
617e1344 | 767 | return device_add(dev); |
7fe06326 AP |
768 | } |
769 | ||
770 | /* | |
771 | * Remove sysfs entries for a logical drive. | |
772 | */ | |
8ce51966 SC |
773 | static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index, |
774 | int ctlr_exiting) | |
7fe06326 | 775 | { |
9cef0d2f | 776 | struct device *dev = &h->drv[drv_index]->dev; |
8ce51966 SC |
777 | |
778 | /* special case for c*d0, we only destroy it on controller exit */ | |
779 | if (drv_index == 0 && !ctlr_exiting) | |
780 | return; | |
781 | ||
617e1344 SC |
782 | device_del(dev); |
783 | put_device(dev); /* the "final" put. */ | |
9cef0d2f | 784 | h->drv[drv_index] = NULL; |
7fe06326 AP |
785 | } |
786 | ||
7c832835 BH |
787 | /* |
788 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 789 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
790 | * which ones are free or in use. For operations that can wait for kmalloc |
791 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
792 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
793 | */ | |
794 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
795 | { |
796 | CommandList_struct *c; | |
7c832835 | 797 | int i; |
1da177e4 LT |
798 | u64bit temp64; |
799 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
800 | ||
7c832835 BH |
801 | if (!get_from_pool) { |
802 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
803 | sizeof(CommandList_struct), &cmd_dma_handle); | |
804 | if (c == NULL) | |
805 | return NULL; | |
1da177e4 LT |
806 | memset(c, 0, sizeof(CommandList_struct)); |
807 | ||
33079b21 MM |
808 | c->cmdindex = -1; |
809 | ||
7c832835 BH |
810 | c->err_info = (ErrorInfo_struct *) |
811 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
812 | &err_dma_handle); | |
813 | ||
814 | if (c->err_info == NULL) { | |
815 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
816 | sizeof(CommandList_struct), c, cmd_dma_handle); |
817 | return NULL; | |
818 | } | |
819 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
820 | } else { /* get it out of the controllers pool */ |
821 | ||
822 | do { | |
f880632f MM |
823 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
824 | if (i == h->nr_cmds) | |
7c832835 BH |
825 | return NULL; |
826 | } while (test_and_set_bit | |
827 | (i & (BITS_PER_LONG - 1), | |
828 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
829 | #ifdef CCISS_DEBUG |
830 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
831 | #endif | |
7c832835 | 832 | c = h->cmd_pool + i; |
1da177e4 | 833 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
834 | cmd_dma_handle = h->cmd_pool_dhandle |
835 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
836 | c->err_info = h->errinfo_pool + i; |
837 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
838 | err_dma_handle = h->errinfo_pool_dhandle |
839 | + i * sizeof(ErrorInfo_struct); | |
840 | h->nr_allocs++; | |
33079b21 MM |
841 | |
842 | c->cmdindex = i; | |
7c832835 | 843 | } |
1da177e4 | 844 | |
8a3173de | 845 | INIT_HLIST_NODE(&c->list); |
1da177e4 | 846 | c->busaddr = (__u32) cmd_dma_handle; |
7c832835 | 847 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
848 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
849 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
850 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 851 | |
7c832835 BH |
852 | c->ctlr = h->ctlr; |
853 | return c; | |
1da177e4 LT |
854 | } |
855 | ||
7c832835 BH |
856 | /* |
857 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
858 | */ |
859 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
860 | { | |
861 | int i; | |
862 | u64bit temp64; | |
863 | ||
7c832835 | 864 | if (!got_from_pool) { |
1da177e4 LT |
865 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
866 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
867 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
868 | c->err_info, (dma_addr_t) temp64.val); | |
869 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
870 | c, (dma_addr_t) c->busaddr); | |
871 | } else { | |
1da177e4 | 872 | i = c - h->cmd_pool; |
7c832835 BH |
873 | clear_bit(i & (BITS_PER_LONG - 1), |
874 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
875 | h->nr_frees++; | |
876 | } | |
1da177e4 LT |
877 | } |
878 | ||
879 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
880 | { | |
7c832835 | 881 | return disk->queue->queuedata; |
1da177e4 LT |
882 | } |
883 | ||
884 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
885 | { | |
886 | return disk->private_data; | |
887 | } | |
888 | ||
889 | /* | |
890 | * Open. Make sure the device is really there. | |
891 | */ | |
ef7822c2 | 892 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
1da177e4 | 893 | { |
ef7822c2 AV |
894 | ctlr_info_t *host = get_host(bdev->bd_disk); |
895 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1da177e4 LT |
896 | |
897 | #ifdef CCISS_DEBUG | |
ef7822c2 | 898 | printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name); |
7c832835 | 899 | #endif /* CCISS_DEBUG */ |
1da177e4 | 900 | |
2e043986 | 901 | if (drv->busy_configuring) |
ddd47442 | 902 | return -EBUSY; |
1da177e4 LT |
903 | /* |
904 | * Root is allowed to open raw volume zero even if it's not configured | |
905 | * so array config can still work. Root is also allowed to open any | |
906 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
907 | * disk information. I don't think I really like this | |
908 | * but I'm already using way to many device nodes to claim another one | |
909 | * for "raw controller". | |
910 | */ | |
7a06f789 | 911 | if (drv->heads == 0) { |
ef7822c2 | 912 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
1da177e4 | 913 | /* if not node 0 make sure it is a partition = 0 */ |
ef7822c2 | 914 | if (MINOR(bdev->bd_dev) & 0x0f) { |
7c832835 | 915 | return -ENXIO; |
1da177e4 | 916 | /* if it is, make sure we have a LUN ID */ |
39ccf9a6 SC |
917 | } else if (memcmp(drv->LunID, CTLR_LUNID, |
918 | sizeof(drv->LunID))) { | |
1da177e4 LT |
919 | return -ENXIO; |
920 | } | |
921 | } | |
922 | if (!capable(CAP_SYS_ADMIN)) | |
923 | return -EPERM; | |
924 | } | |
925 | drv->usage_count++; | |
926 | host->usage_count++; | |
927 | return 0; | |
928 | } | |
7c832835 | 929 | |
1da177e4 LT |
930 | /* |
931 | * Close. Sync first. | |
932 | */ | |
ef7822c2 | 933 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
1da177e4 | 934 | { |
ef7822c2 AV |
935 | ctlr_info_t *host = get_host(disk); |
936 | drive_info_struct *drv = get_drv(disk); | |
1da177e4 LT |
937 | |
938 | #ifdef CCISS_DEBUG | |
ef7822c2 | 939 | printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name); |
7c832835 | 940 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
941 | |
942 | drv->usage_count--; | |
943 | host->usage_count--; | |
944 | return 0; | |
945 | } | |
946 | ||
947 | #ifdef CONFIG_COMPAT | |
948 | ||
ef7822c2 AV |
949 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
950 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
951 | { |
952 | int ret; | |
953 | lock_kernel(); | |
ef7822c2 | 954 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
955 | unlock_kernel(); |
956 | return ret; | |
957 | } | |
958 | ||
ef7822c2 AV |
959 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
960 | unsigned cmd, unsigned long arg); | |
961 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, | |
962 | unsigned cmd, unsigned long arg); | |
1da177e4 | 963 | |
ef7822c2 AV |
964 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
965 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
966 | { |
967 | switch (cmd) { | |
968 | case CCISS_GETPCIINFO: | |
969 | case CCISS_GETINTINFO: | |
970 | case CCISS_SETINTINFO: | |
971 | case CCISS_GETNODENAME: | |
972 | case CCISS_SETNODENAME: | |
973 | case CCISS_GETHEARTBEAT: | |
974 | case CCISS_GETBUSTYPES: | |
975 | case CCISS_GETFIRMVER: | |
976 | case CCISS_GETDRIVVER: | |
977 | case CCISS_REVALIDVOLS: | |
978 | case CCISS_DEREGDISK: | |
979 | case CCISS_REGNEWDISK: | |
980 | case CCISS_REGNEWD: | |
981 | case CCISS_RESCANDISK: | |
982 | case CCISS_GETLUNINFO: | |
ef7822c2 | 983 | return do_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
984 | |
985 | case CCISS_PASSTHRU32: | |
ef7822c2 | 986 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
1da177e4 | 987 | case CCISS_BIG_PASSTHRU32: |
ef7822c2 | 988 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
1da177e4 LT |
989 | |
990 | default: | |
991 | return -ENOIOCTLCMD; | |
992 | } | |
993 | } | |
994 | ||
ef7822c2 AV |
995 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
996 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
997 | { |
998 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 999 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
1000 | IOCTL_Command_struct arg64; |
1001 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
1002 | int err; | |
1003 | u32 cp; | |
1004 | ||
1005 | err = 0; | |
7c832835 BH |
1006 | err |= |
1007 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1008 | sizeof(arg64.LUN_info)); | |
1009 | err |= | |
1010 | copy_from_user(&arg64.Request, &arg32->Request, | |
1011 | sizeof(arg64.Request)); | |
1012 | err |= | |
1013 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1014 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1015 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1016 | err |= get_user(cp, &arg32->buf); | |
1017 | arg64.buf = compat_ptr(cp); | |
1018 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1019 | ||
1020 | if (err) | |
1021 | return -EFAULT; | |
1022 | ||
ef7822c2 | 1023 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1024 | if (err) |
1025 | return err; | |
7c832835 BH |
1026 | err |= |
1027 | copy_in_user(&arg32->error_info, &p->error_info, | |
1028 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1029 | if (err) |
1030 | return -EFAULT; | |
1031 | return err; | |
1032 | } | |
1033 | ||
ef7822c2 AV |
1034 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
1035 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1036 | { |
1037 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 1038 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 1039 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
1040 | BIG_IOCTL_Command_struct __user *p = |
1041 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
1042 | int err; |
1043 | u32 cp; | |
1044 | ||
1045 | err = 0; | |
7c832835 BH |
1046 | err |= |
1047 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1048 | sizeof(arg64.LUN_info)); | |
1049 | err |= | |
1050 | copy_from_user(&arg64.Request, &arg32->Request, | |
1051 | sizeof(arg64.Request)); | |
1052 | err |= | |
1053 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1054 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1055 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1056 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
1057 | err |= get_user(cp, &arg32->buf); | |
1058 | arg64.buf = compat_ptr(cp); | |
1059 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1060 | ||
1061 | if (err) | |
7c832835 | 1062 | return -EFAULT; |
1da177e4 | 1063 | |
ef7822c2 | 1064 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1065 | if (err) |
1066 | return err; | |
7c832835 BH |
1067 | err |= |
1068 | copy_in_user(&arg32->error_info, &p->error_info, | |
1069 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1070 | if (err) |
1071 | return -EFAULT; | |
1072 | return err; | |
1073 | } | |
1074 | #endif | |
a885c8c4 CH |
1075 | |
1076 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
1077 | { | |
1078 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1079 | ||
1080 | if (!drv->cylinders) | |
1081 | return -ENXIO; | |
1082 | ||
1083 | geo->heads = drv->heads; | |
1084 | geo->sectors = drv->sectors; | |
1085 | geo->cylinders = drv->cylinders; | |
1086 | return 0; | |
1087 | } | |
1088 | ||
0a9279cc MM |
1089 | static void check_ioctl_unit_attention(ctlr_info_t *host, CommandList_struct *c) |
1090 | { | |
1091 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
1092 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) | |
1093 | (void)check_for_unit_attention(host, c); | |
1094 | } | |
1da177e4 | 1095 | /* |
7c832835 | 1096 | * ioctl |
1da177e4 | 1097 | */ |
ef7822c2 | 1098 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
7c832835 | 1099 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1100 | { |
1da177e4 LT |
1101 | struct gendisk *disk = bdev->bd_disk; |
1102 | ctlr_info_t *host = get_host(disk); | |
1103 | drive_info_struct *drv = get_drv(disk); | |
1104 | int ctlr = host->ctlr; | |
1105 | void __user *argp = (void __user *)arg; | |
1106 | ||
1107 | #ifdef CCISS_DEBUG | |
1108 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
1109 | #endif /* CCISS_DEBUG */ |
1110 | ||
1111 | switch (cmd) { | |
1da177e4 | 1112 | case CCISS_GETPCIINFO: |
7c832835 BH |
1113 | { |
1114 | cciss_pci_info_struct pciinfo; | |
1115 | ||
1116 | if (!arg) | |
1117 | return -EINVAL; | |
1118 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
1119 | pciinfo.bus = host->pdev->bus->number; | |
1120 | pciinfo.dev_fn = host->pdev->devfn; | |
1121 | pciinfo.board_id = host->board_id; | |
1122 | if (copy_to_user | |
1123 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
1124 | return -EFAULT; | |
1125 | return 0; | |
1126 | } | |
1da177e4 | 1127 | case CCISS_GETINTINFO: |
7c832835 BH |
1128 | { |
1129 | cciss_coalint_struct intinfo; | |
1130 | if (!arg) | |
1131 | return -EINVAL; | |
1132 | intinfo.delay = | |
1133 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
1134 | intinfo.count = | |
1135 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
1136 | if (copy_to_user | |
1137 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
1138 | return -EFAULT; | |
1139 | return 0; | |
1140 | } | |
1da177e4 | 1141 | case CCISS_SETINTINFO: |
1da177e4 | 1142 | { |
7c832835 BH |
1143 | cciss_coalint_struct intinfo; |
1144 | unsigned long flags; | |
1145 | int i; | |
1146 | ||
1147 | if (!arg) | |
1148 | return -EINVAL; | |
1149 | if (!capable(CAP_SYS_ADMIN)) | |
1150 | return -EPERM; | |
1151 | if (copy_from_user | |
1152 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
1153 | return -EFAULT; | |
1154 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
1155 | { | |
1156 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
1157 | return -EINVAL; | |
1158 | } | |
1159 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1160 | /* Update the field, and then ring the doorbell */ | |
1161 | writel(intinfo.delay, | |
1162 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
1163 | writel(intinfo.count, | |
1164 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
1165 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
1166 | ||
1167 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1168 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
1169 | & CFGTBL_ChangeReq)) | |
1170 | break; | |
1171 | /* delay and try again */ | |
1172 | udelay(1000); | |
1173 | } | |
1174 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1175 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1176 | return -EAGAIN; | |
1177 | return 0; | |
1da177e4 | 1178 | } |
1da177e4 | 1179 | case CCISS_GETNODENAME: |
7c832835 BH |
1180 | { |
1181 | NodeName_type NodeName; | |
1182 | int i; | |
1183 | ||
1184 | if (!arg) | |
1185 | return -EINVAL; | |
1186 | for (i = 0; i < 16; i++) | |
1187 | NodeName[i] = | |
1188 | readb(&host->cfgtable->ServerName[i]); | |
1189 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
1190 | return -EFAULT; | |
1191 | return 0; | |
1192 | } | |
1da177e4 | 1193 | case CCISS_SETNODENAME: |
7c832835 BH |
1194 | { |
1195 | NodeName_type NodeName; | |
1196 | unsigned long flags; | |
1197 | int i; | |
1198 | ||
1199 | if (!arg) | |
1200 | return -EINVAL; | |
1201 | if (!capable(CAP_SYS_ADMIN)) | |
1202 | return -EPERM; | |
1203 | ||
1204 | if (copy_from_user | |
1205 | (NodeName, argp, sizeof(NodeName_type))) | |
1206 | return -EFAULT; | |
1207 | ||
1208 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1209 | ||
1210 | /* Update the field, and then ring the doorbell */ | |
1211 | for (i = 0; i < 16; i++) | |
1212 | writeb(NodeName[i], | |
1213 | &host->cfgtable->ServerName[i]); | |
1214 | ||
1215 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
1216 | ||
1217 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1218 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
1219 | & CFGTBL_ChangeReq)) | |
1220 | break; | |
1221 | /* delay and try again */ | |
1222 | udelay(1000); | |
1223 | } | |
1224 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1225 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1226 | return -EAGAIN; | |
1227 | return 0; | |
1228 | } | |
1da177e4 LT |
1229 | |
1230 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
1231 | { |
1232 | Heartbeat_type heartbeat; | |
1233 | ||
1234 | if (!arg) | |
1235 | return -EINVAL; | |
1236 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
1237 | if (copy_to_user | |
1238 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
1239 | return -EFAULT; | |
1240 | return 0; | |
1241 | } | |
1da177e4 | 1242 | case CCISS_GETBUSTYPES: |
7c832835 BH |
1243 | { |
1244 | BusTypes_type BusTypes; | |
1245 | ||
1246 | if (!arg) | |
1247 | return -EINVAL; | |
1248 | BusTypes = readl(&host->cfgtable->BusTypes); | |
1249 | if (copy_to_user | |
1250 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
1251 | return -EFAULT; | |
1252 | return 0; | |
1253 | } | |
1da177e4 | 1254 | case CCISS_GETFIRMVER: |
7c832835 BH |
1255 | { |
1256 | FirmwareVer_type firmware; | |
1da177e4 | 1257 | |
7c832835 BH |
1258 | if (!arg) |
1259 | return -EINVAL; | |
1260 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 1261 | |
7c832835 BH |
1262 | if (copy_to_user |
1263 | (argp, firmware, sizeof(FirmwareVer_type))) | |
1264 | return -EFAULT; | |
1265 | return 0; | |
1266 | } | |
1267 | case CCISS_GETDRIVVER: | |
1268 | { | |
1269 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 1270 | |
7c832835 BH |
1271 | if (!arg) |
1272 | return -EINVAL; | |
1da177e4 | 1273 | |
7c832835 BH |
1274 | if (copy_to_user |
1275 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
1276 | return -EFAULT; | |
1277 | return 0; | |
1278 | } | |
1da177e4 | 1279 | |
6ae5ce8e MM |
1280 | case CCISS_DEREGDISK: |
1281 | case CCISS_REGNEWD: | |
1da177e4 | 1282 | case CCISS_REVALIDVOLS: |
2d11d993 | 1283 | return rebuild_lun_table(host, 0, 1); |
7c832835 BH |
1284 | |
1285 | case CCISS_GETLUNINFO:{ | |
1286 | LogvolInfo_struct luninfo; | |
1287 | ||
39ccf9a6 SC |
1288 | memcpy(&luninfo.LunID, drv->LunID, |
1289 | sizeof(luninfo.LunID)); | |
7c832835 BH |
1290 | luninfo.num_opens = drv->usage_count; |
1291 | luninfo.num_parts = 0; | |
1292 | if (copy_to_user(argp, &luninfo, | |
1293 | sizeof(LogvolInfo_struct))) | |
1294 | return -EFAULT; | |
1295 | return 0; | |
1296 | } | |
1da177e4 | 1297 | case CCISS_PASSTHRU: |
1da177e4 | 1298 | { |
7c832835 BH |
1299 | IOCTL_Command_struct iocommand; |
1300 | CommandList_struct *c; | |
1301 | char *buff = NULL; | |
1302 | u64bit temp64; | |
1303 | unsigned long flags; | |
6e9a4738 | 1304 | DECLARE_COMPLETION_ONSTACK(wait); |
1da177e4 | 1305 | |
7c832835 BH |
1306 | if (!arg) |
1307 | return -EINVAL; | |
1da177e4 | 1308 | |
7c832835 BH |
1309 | if (!capable(CAP_SYS_RAWIO)) |
1310 | return -EPERM; | |
1da177e4 | 1311 | |
7c832835 BH |
1312 | if (copy_from_user |
1313 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
1314 | return -EFAULT; | |
1315 | if ((iocommand.buf_size < 1) && | |
1316 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
1317 | return -EINVAL; | |
1318 | } | |
1319 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
1320 | /* Check kmalloc limits */ | |
1321 | if (iocommand.buf_size > 128000) | |
1322 | return -EINVAL; | |
1323 | #endif | |
1324 | if (iocommand.buf_size > 0) { | |
1325 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
1326 | if (buff == NULL) | |
1327 | return -EFAULT; | |
1328 | } | |
1329 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
1330 | /* Copy the data into the buffer we created */ | |
1331 | if (copy_from_user | |
1332 | (buff, iocommand.buf, iocommand.buf_size)) { | |
1333 | kfree(buff); | |
1334 | return -EFAULT; | |
1335 | } | |
1336 | } else { | |
1337 | memset(buff, 0, iocommand.buf_size); | |
1338 | } | |
1339 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1340 | kfree(buff); | |
1341 | return -ENOMEM; | |
1342 | } | |
1343 | // Fill in the command type | |
1344 | c->cmd_type = CMD_IOCTL_PEND; | |
1345 | // Fill in Command Header | |
1346 | c->Header.ReplyQueue = 0; // unused in simple mode | |
1347 | if (iocommand.buf_size > 0) // buffer to fill | |
1348 | { | |
1349 | c->Header.SGList = 1; | |
1350 | c->Header.SGTotal = 1; | |
1351 | } else // no buffers to fill | |
1352 | { | |
1353 | c->Header.SGList = 0; | |
1354 | c->Header.SGTotal = 0; | |
1355 | } | |
1356 | c->Header.LUN = iocommand.LUN_info; | |
1357 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag | |
1da177e4 | 1358 | |
7c832835 BH |
1359 | // Fill in Request block |
1360 | c->Request = iocommand.Request; | |
1da177e4 | 1361 | |
7c832835 BH |
1362 | // Fill in the scatter gather information |
1363 | if (iocommand.buf_size > 0) { | |
1364 | temp64.val = pci_map_single(host->pdev, buff, | |
1365 | iocommand.buf_size, | |
1366 | PCI_DMA_BIDIRECTIONAL); | |
1367 | c->SG[0].Addr.lower = temp64.val32.lower; | |
1368 | c->SG[0].Addr.upper = temp64.val32.upper; | |
1369 | c->SG[0].Len = iocommand.buf_size; | |
1370 | c->SG[0].Ext = 0; // we are not chaining | |
1371 | } | |
1372 | c->waiting = &wait; | |
1373 | ||
1374 | /* Put the request on the tail of the request queue */ | |
1375 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1376 | addQ(&host->reqQ, c); | |
1377 | host->Qdepth++; | |
1378 | start_io(host); | |
1379 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1380 | ||
1381 | wait_for_completion(&wait); | |
1382 | ||
1383 | /* unlock the buffers from DMA */ | |
1384 | temp64.val32.lower = c->SG[0].Addr.lower; | |
1385 | temp64.val32.upper = c->SG[0].Addr.upper; | |
1386 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
1387 | iocommand.buf_size, | |
1388 | PCI_DMA_BIDIRECTIONAL); | |
1389 | ||
0a9279cc MM |
1390 | check_ioctl_unit_attention(host, c); |
1391 | ||
7c832835 BH |
1392 | /* Copy the error information out */ |
1393 | iocommand.error_info = *(c->err_info); | |
1394 | if (copy_to_user | |
1395 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
1396 | kfree(buff); | |
1da177e4 LT |
1397 | cmd_free(host, c, 0); |
1398 | return -EFAULT; | |
1399 | } | |
7c832835 BH |
1400 | |
1401 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
1402 | /* Copy the data out of the buffer we created */ | |
1403 | if (copy_to_user | |
1404 | (iocommand.buf, buff, iocommand.buf_size)) { | |
1405 | kfree(buff); | |
1406 | cmd_free(host, c, 0); | |
1407 | return -EFAULT; | |
1408 | } | |
1409 | } | |
1410 | kfree(buff); | |
1411 | cmd_free(host, c, 0); | |
1412 | return 0; | |
1da177e4 | 1413 | } |
7c832835 BH |
1414 | case CCISS_BIG_PASSTHRU:{ |
1415 | BIG_IOCTL_Command_struct *ioc; | |
1416 | CommandList_struct *c; | |
1417 | unsigned char **buff = NULL; | |
1418 | int *buff_size = NULL; | |
1419 | u64bit temp64; | |
1420 | unsigned long flags; | |
1421 | BYTE sg_used = 0; | |
1422 | int status = 0; | |
1423 | int i; | |
6e9a4738 | 1424 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1425 | __u32 left; |
1426 | __u32 sz; | |
1427 | BYTE __user *data_ptr; | |
1428 | ||
1429 | if (!arg) | |
1430 | return -EINVAL; | |
1431 | if (!capable(CAP_SYS_RAWIO)) | |
1432 | return -EPERM; | |
1433 | ioc = (BIG_IOCTL_Command_struct *) | |
1434 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1435 | if (!ioc) { | |
1436 | status = -ENOMEM; | |
1437 | goto cleanup1; | |
1438 | } | |
1439 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1440 | status = -EFAULT; | |
1441 | goto cleanup1; | |
1442 | } | |
1443 | if ((ioc->buf_size < 1) && | |
1444 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1445 | status = -EINVAL; |
1446 | goto cleanup1; | |
7c832835 BH |
1447 | } |
1448 | /* Check kmalloc limits using all SGs */ | |
1449 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1450 | status = -EINVAL; | |
1451 | goto cleanup1; | |
1452 | } | |
1453 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1454 | status = -EINVAL; | |
1455 | goto cleanup1; | |
1456 | } | |
1457 | buff = | |
1458 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1459 | if (!buff) { | |
1da177e4 LT |
1460 | status = -ENOMEM; |
1461 | goto cleanup1; | |
1462 | } | |
5cbded58 | 1463 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
7c832835 BH |
1464 | GFP_KERNEL); |
1465 | if (!buff_size) { | |
1466 | status = -ENOMEM; | |
1467 | goto cleanup1; | |
1468 | } | |
1469 | left = ioc->buf_size; | |
1470 | data_ptr = ioc->buf; | |
1471 | while (left) { | |
1472 | sz = (left > | |
1473 | ioc->malloc_size) ? ioc-> | |
1474 | malloc_size : left; | |
1475 | buff_size[sg_used] = sz; | |
1476 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1477 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1478 | status = -ENOMEM; |
15534d38 JA |
1479 | goto cleanup1; |
1480 | } | |
7c832835 BH |
1481 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1482 | if (copy_from_user | |
1483 | (buff[sg_used], data_ptr, sz)) { | |
f7108f91 | 1484 | status = -EFAULT; |
7c832835 BH |
1485 | goto cleanup1; |
1486 | } | |
1487 | } else { | |
1488 | memset(buff[sg_used], 0, sz); | |
1489 | } | |
1490 | left -= sz; | |
1491 | data_ptr += sz; | |
1492 | sg_used++; | |
1493 | } | |
1494 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1495 | status = -ENOMEM; | |
1496 | goto cleanup1; | |
1497 | } | |
1498 | c->cmd_type = CMD_IOCTL_PEND; | |
1499 | c->Header.ReplyQueue = 0; | |
1500 | ||
1501 | if (ioc->buf_size > 0) { | |
1502 | c->Header.SGList = sg_used; | |
1503 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1504 | } else { |
7c832835 BH |
1505 | c->Header.SGList = 0; |
1506 | c->Header.SGTotal = 0; | |
1da177e4 | 1507 | } |
7c832835 BH |
1508 | c->Header.LUN = ioc->LUN_info; |
1509 | c->Header.Tag.lower = c->busaddr; | |
1510 | ||
1511 | c->Request = ioc->Request; | |
1512 | if (ioc->buf_size > 0) { | |
1513 | int i; | |
1514 | for (i = 0; i < sg_used; i++) { | |
1515 | temp64.val = | |
1516 | pci_map_single(host->pdev, buff[i], | |
1517 | buff_size[i], | |
1518 | PCI_DMA_BIDIRECTIONAL); | |
1519 | c->SG[i].Addr.lower = | |
1520 | temp64.val32.lower; | |
1521 | c->SG[i].Addr.upper = | |
1522 | temp64.val32.upper; | |
1523 | c->SG[i].Len = buff_size[i]; | |
1524 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1525 | } | |
1526 | } | |
1527 | c->waiting = &wait; | |
1528 | /* Put the request on the tail of the request queue */ | |
1529 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1530 | addQ(&host->reqQ, c); | |
1531 | host->Qdepth++; | |
1532 | start_io(host); | |
1533 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1534 | wait_for_completion(&wait); | |
1535 | /* unlock the buffers from DMA */ | |
1536 | for (i = 0; i < sg_used; i++) { | |
1537 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1538 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1539 | pci_unmap_single(host->pdev, | |
1540 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1541 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1542 | } |
0a9279cc | 1543 | check_ioctl_unit_attention(host, c); |
7c832835 BH |
1544 | /* Copy the error information out */ |
1545 | ioc->error_info = *(c->err_info); | |
1546 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1547 | cmd_free(host, c, 0); | |
1548 | status = -EFAULT; | |
1549 | goto cleanup1; | |
1550 | } | |
1551 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1552 | /* Copy the data out of the buffer we created */ | |
1553 | BYTE __user *ptr = ioc->buf; | |
1554 | for (i = 0; i < sg_used; i++) { | |
1555 | if (copy_to_user | |
1556 | (ptr, buff[i], buff_size[i])) { | |
1557 | cmd_free(host, c, 0); | |
1558 | status = -EFAULT; | |
1559 | goto cleanup1; | |
1560 | } | |
1561 | ptr += buff_size[i]; | |
1da177e4 | 1562 | } |
1da177e4 | 1563 | } |
7c832835 BH |
1564 | cmd_free(host, c, 0); |
1565 | status = 0; | |
1566 | cleanup1: | |
1567 | if (buff) { | |
1568 | for (i = 0; i < sg_used; i++) | |
1569 | kfree(buff[i]); | |
1570 | kfree(buff); | |
1571 | } | |
1572 | kfree(buff_size); | |
1573 | kfree(ioc); | |
1574 | return status; | |
1da177e4 | 1575 | } |
03bbfee5 MMOD |
1576 | |
1577 | /* scsi_cmd_ioctl handles these, below, though some are not */ | |
1578 | /* very meaningful for cciss. SG_IO is the main one people want. */ | |
1579 | ||
1580 | case SG_GET_VERSION_NUM: | |
1581 | case SG_SET_TIMEOUT: | |
1582 | case SG_GET_TIMEOUT: | |
1583 | case SG_GET_RESERVED_SIZE: | |
1584 | case SG_SET_RESERVED_SIZE: | |
1585 | case SG_EMULATED_HOST: | |
1586 | case SG_IO: | |
1587 | case SCSI_IOCTL_SEND_COMMAND: | |
ef7822c2 | 1588 | return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
03bbfee5 MMOD |
1589 | |
1590 | /* scsi_cmd_ioctl would normally handle these, below, but */ | |
1591 | /* they aren't a good fit for cciss, as CD-ROMs are */ | |
1592 | /* not supported, and we don't have any bus/target/lun */ | |
1593 | /* which we present to the kernel. */ | |
1594 | ||
1595 | case CDROM_SEND_PACKET: | |
1596 | case CDROMCLOSETRAY: | |
1597 | case CDROMEJECT: | |
1598 | case SCSI_IOCTL_GET_IDLUN: | |
1599 | case SCSI_IOCTL_GET_BUS_NUMBER: | |
1da177e4 LT |
1600 | default: |
1601 | return -ENOTTY; | |
1602 | } | |
1da177e4 LT |
1603 | } |
1604 | ||
7b30f092 JA |
1605 | static void cciss_check_queues(ctlr_info_t *h) |
1606 | { | |
1607 | int start_queue = h->next_to_run; | |
1608 | int i; | |
1609 | ||
1610 | /* check to see if we have maxed out the number of commands that can | |
1611 | * be placed on the queue. If so then exit. We do this check here | |
1612 | * in case the interrupt we serviced was from an ioctl and did not | |
1613 | * free any new commands. | |
1614 | */ | |
f880632f | 1615 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1616 | return; |
1617 | ||
1618 | /* We have room on the queue for more commands. Now we need to queue | |
1619 | * them up. We will also keep track of the next queue to run so | |
1620 | * that every queue gets a chance to be started first. | |
1621 | */ | |
1622 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1623 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1624 | /* make sure the disk has been added and the drive is real | |
1625 | * because this can be called from the middle of init_one. | |
1626 | */ | |
9cef0d2f SC |
1627 | if (!h->drv[curr_queue]) |
1628 | continue; | |
1629 | if (!(h->drv[curr_queue]->queue) || | |
1630 | !(h->drv[curr_queue]->heads)) | |
7b30f092 JA |
1631 | continue; |
1632 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1633 | ||
1634 | /* check to see if we have maxed out the number of commands | |
1635 | * that can be placed on the queue. | |
1636 | */ | |
f880632f | 1637 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1638 | if (curr_queue == start_queue) { |
1639 | h->next_to_run = | |
1640 | (start_queue + 1) % (h->highest_lun + 1); | |
1641 | break; | |
1642 | } else { | |
1643 | h->next_to_run = curr_queue; | |
1644 | break; | |
1645 | } | |
7b30f092 JA |
1646 | } |
1647 | } | |
1648 | } | |
1649 | ||
ca1e0484 MM |
1650 | static void cciss_softirq_done(struct request *rq) |
1651 | { | |
1652 | CommandList_struct *cmd = rq->completion_data; | |
1653 | ctlr_info_t *h = hba[cmd->ctlr]; | |
1654 | unsigned long flags; | |
1655 | u64bit temp64; | |
1656 | int i, ddir; | |
1657 | ||
1658 | if (cmd->Request.Type.Direction == XFER_READ) | |
1659 | ddir = PCI_DMA_FROMDEVICE; | |
1660 | else | |
1661 | ddir = PCI_DMA_TODEVICE; | |
1662 | ||
1663 | /* command did not need to be retried */ | |
1664 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1665 | for (i = 0; i < cmd->Header.SGList; i++) { |
ca1e0484 MM |
1666 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
1667 | temp64.val32.upper = cmd->SG[i].Addr.upper; | |
1668 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); | |
1669 | } | |
1670 | ||
ca1e0484 MM |
1671 | #ifdef CCISS_DEBUG |
1672 | printk("Done with %p\n", rq); | |
7c832835 | 1673 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1674 | |
c3a4d78c | 1675 | /* set the residual count for pc requests */ |
ac44e5b2 | 1676 | if (blk_pc_request(rq)) |
c3a4d78c | 1677 | rq->resid_len = cmd->err_info->ResidualCnt; |
ac44e5b2 | 1678 | |
c3a4d78c | 1679 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
3daeea29 | 1680 | |
ca1e0484 | 1681 | spin_lock_irqsave(&h->lock, flags); |
7c832835 | 1682 | cmd_free(h, cmd, 1); |
7b30f092 | 1683 | cciss_check_queues(h); |
ca1e0484 MM |
1684 | spin_unlock_irqrestore(&h->lock, flags); |
1685 | } | |
1686 | ||
39ccf9a6 SC |
1687 | static inline void log_unit_to_scsi3addr(ctlr_info_t *h, |
1688 | unsigned char scsi3addr[], uint32_t log_unit) | |
b57695fe | 1689 | { |
9cef0d2f SC |
1690 | memcpy(scsi3addr, h->drv[log_unit]->LunID, |
1691 | sizeof(h->drv[log_unit]->LunID)); | |
b57695fe | 1692 | } |
1693 | ||
7fe06326 AP |
1694 | /* This function gets the SCSI vendor, model, and revision of a logical drive |
1695 | * via the inquiry page 0. Model, vendor, and rev are set to empty strings if | |
1696 | * they cannot be read. | |
1697 | */ | |
1698 | static void cciss_get_device_descr(int ctlr, int logvol, int withirq, | |
1699 | char *vendor, char *model, char *rev) | |
1700 | { | |
1701 | int rc; | |
1702 | InquiryData_struct *inq_buf; | |
b57695fe | 1703 | unsigned char scsi3addr[8]; |
7fe06326 AP |
1704 | |
1705 | *vendor = '\0'; | |
1706 | *model = '\0'; | |
1707 | *rev = '\0'; | |
1708 | ||
1709 | inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
1710 | if (!inq_buf) | |
1711 | return; | |
1712 | ||
b57695fe | 1713 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7fe06326 AP |
1714 | if (withirq) |
1715 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buf, | |
b57695fe | 1716 | sizeof(InquiryData_struct), 0, |
1717 | scsi3addr, TYPE_CMD); | |
7fe06326 AP |
1718 | else |
1719 | rc = sendcmd(CISS_INQUIRY, ctlr, inq_buf, | |
b57695fe | 1720 | sizeof(InquiryData_struct), 0, |
1721 | scsi3addr, TYPE_CMD); | |
7fe06326 AP |
1722 | if (rc == IO_OK) { |
1723 | memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); | |
1724 | vendor[VENDOR_LEN] = '\0'; | |
1725 | memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); | |
1726 | model[MODEL_LEN] = '\0'; | |
1727 | memcpy(rev, &inq_buf->data_byte[32], REV_LEN); | |
1728 | rev[REV_LEN] = '\0'; | |
1729 | } | |
1730 | ||
1731 | kfree(inq_buf); | |
1732 | return; | |
1733 | } | |
1734 | ||
a72da29b MM |
1735 | /* This function gets the serial number of a logical drive via |
1736 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial | |
1737 | * number cannot be had, for whatever reason, 16 bytes of 0xff | |
1738 | * are returned instead. | |
1739 | */ | |
1740 | static void cciss_get_serial_no(int ctlr, int logvol, int withirq, | |
1741 | unsigned char *serial_no, int buflen) | |
1742 | { | |
1743 | #define PAGE_83_INQ_BYTES 64 | |
1744 | int rc; | |
1745 | unsigned char *buf; | |
b57695fe | 1746 | unsigned char scsi3addr[8]; |
a72da29b MM |
1747 | |
1748 | if (buflen > 16) | |
1749 | buflen = 16; | |
1750 | memset(serial_no, 0xff, buflen); | |
1751 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); | |
1752 | if (!buf) | |
1753 | return; | |
1754 | memset(serial_no, 0, buflen); | |
b57695fe | 1755 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
a72da29b MM |
1756 | if (withirq) |
1757 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf, | |
b57695fe | 1758 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
a72da29b MM |
1759 | else |
1760 | rc = sendcmd(CISS_INQUIRY, ctlr, buf, | |
b57695fe | 1761 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
a72da29b MM |
1762 | if (rc == IO_OK) |
1763 | memcpy(serial_no, &buf[8], buflen); | |
1764 | kfree(buf); | |
1765 | return; | |
1766 | } | |
1767 | ||
617e1344 SC |
1768 | /* |
1769 | * cciss_add_disk sets up the block device queue for a logical drive | |
1770 | */ | |
1771 | static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, | |
6ae5ce8e MM |
1772 | int drv_index) |
1773 | { | |
1774 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); | |
e8074f79 SC |
1775 | if (!disk->queue) |
1776 | goto init_queue_failure; | |
6ae5ce8e MM |
1777 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); |
1778 | disk->major = h->major; | |
1779 | disk->first_minor = drv_index << NWD_SHIFT; | |
1780 | disk->fops = &cciss_fops; | |
9cef0d2f SC |
1781 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
1782 | goto cleanup_queue; | |
1783 | disk->private_data = h->drv[drv_index]; | |
1784 | disk->driverfs_dev = &h->drv[drv_index]->dev; | |
6ae5ce8e MM |
1785 | |
1786 | /* Set up queue information */ | |
1787 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); | |
1788 | ||
1789 | /* This is a hardware imposed limit. */ | |
1790 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); | |
1791 | ||
1792 | /* This is a limit in the driver and could be eliminated. */ | |
1793 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); | |
1794 | ||
1795 | blk_queue_max_sectors(disk->queue, h->cciss_max_sectors); | |
1796 | ||
1797 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); | |
1798 | ||
1799 | disk->queue->queuedata = h; | |
1800 | ||
e1defc4f | 1801 | blk_queue_logical_block_size(disk->queue, |
9cef0d2f | 1802 | h->drv[drv_index]->block_size); |
6ae5ce8e MM |
1803 | |
1804 | /* Make sure all queue data is written out before */ | |
9cef0d2f | 1805 | /* setting h->drv[drv_index]->queue, as setting this */ |
6ae5ce8e MM |
1806 | /* allows the interrupt handler to start the queue */ |
1807 | wmb(); | |
9cef0d2f | 1808 | h->drv[drv_index]->queue = disk->queue; |
6ae5ce8e | 1809 | add_disk(disk); |
617e1344 SC |
1810 | return 0; |
1811 | ||
1812 | cleanup_queue: | |
1813 | blk_cleanup_queue(disk->queue); | |
1814 | disk->queue = NULL; | |
e8074f79 | 1815 | init_queue_failure: |
617e1344 | 1816 | return -1; |
6ae5ce8e MM |
1817 | } |
1818 | ||
ddd47442 | 1819 | /* This function will check the usage_count of the drive to be updated/added. |
a72da29b MM |
1820 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
1821 | * the drive's capacity, geometry, or serial number has changed, | |
1822 | * then the drive information will be updated and the disk will be | |
1823 | * re-registered with the kernel. If these conditions don't hold, | |
1824 | * then it will be left alone for the next reboot. The exception to this | |
1825 | * is disk 0 which will always be left registered with the kernel since it | |
1826 | * is also the controller node. Any changes to disk 0 will show up on | |
1827 | * the next reboot. | |
7c832835 | 1828 | */ |
2d11d993 SC |
1829 | static void cciss_update_drive_info(int ctlr, int drv_index, int first_time, |
1830 | int via_ioctl) | |
7c832835 | 1831 | { |
ddd47442 MM |
1832 | ctlr_info_t *h = hba[ctlr]; |
1833 | struct gendisk *disk; | |
ddd47442 MM |
1834 | InquiryData_struct *inq_buff = NULL; |
1835 | unsigned int block_size; | |
00988a35 | 1836 | sector_t total_size; |
ddd47442 MM |
1837 | unsigned long flags = 0; |
1838 | int ret = 0; | |
a72da29b MM |
1839 | drive_info_struct *drvinfo; |
1840 | ||
1841 | /* Get information about the disk and modify the driver structure */ | |
1842 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
9cef0d2f | 1843 | drvinfo = kzalloc(sizeof(*drvinfo), GFP_KERNEL); |
a72da29b MM |
1844 | if (inq_buff == NULL || drvinfo == NULL) |
1845 | goto mem_msg; | |
1846 | ||
1847 | /* testing to see if 16-byte CDBs are already being used */ | |
1848 | if (h->cciss_read == CCISS_READ_16) { | |
1849 | cciss_read_capacity_16(h->ctlr, drv_index, 1, | |
1850 | &total_size, &block_size); | |
1851 | ||
1852 | } else { | |
1853 | cciss_read_capacity(ctlr, drv_index, 1, | |
1854 | &total_size, &block_size); | |
1855 | ||
1856 | /* if read_capacity returns all F's this volume is >2TB */ | |
1857 | /* in size so we switch to 16-byte CDB's for all */ | |
1858 | /* read/write ops */ | |
1859 | if (total_size == 0xFFFFFFFFULL) { | |
1860 | cciss_read_capacity_16(ctlr, drv_index, 1, | |
1861 | &total_size, &block_size); | |
1862 | h->cciss_read = CCISS_READ_16; | |
1863 | h->cciss_write = CCISS_WRITE_16; | |
1864 | } else { | |
1865 | h->cciss_read = CCISS_READ_10; | |
1866 | h->cciss_write = CCISS_WRITE_10; | |
1867 | } | |
1868 | } | |
1869 | ||
1870 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, | |
1871 | inq_buff, drvinfo); | |
1872 | drvinfo->block_size = block_size; | |
1873 | drvinfo->nr_blocks = total_size + 1; | |
1874 | ||
7fe06326 AP |
1875 | cciss_get_device_descr(ctlr, drv_index, 1, drvinfo->vendor, |
1876 | drvinfo->model, drvinfo->rev); | |
a72da29b MM |
1877 | cciss_get_serial_no(ctlr, drv_index, 1, drvinfo->serial_no, |
1878 | sizeof(drvinfo->serial_no)); | |
9cef0d2f SC |
1879 | /* Save the lunid in case we deregister the disk, below. */ |
1880 | memcpy(drvinfo->LunID, h->drv[drv_index]->LunID, | |
1881 | sizeof(drvinfo->LunID)); | |
a72da29b MM |
1882 | |
1883 | /* Is it the same disk we already know, and nothing's changed? */ | |
9cef0d2f | 1884 | if (h->drv[drv_index]->raid_level != -1 && |
a72da29b | 1885 | ((memcmp(drvinfo->serial_no, |
9cef0d2f SC |
1886 | h->drv[drv_index]->serial_no, 16) == 0) && |
1887 | drvinfo->block_size == h->drv[drv_index]->block_size && | |
1888 | drvinfo->nr_blocks == h->drv[drv_index]->nr_blocks && | |
1889 | drvinfo->heads == h->drv[drv_index]->heads && | |
1890 | drvinfo->sectors == h->drv[drv_index]->sectors && | |
1891 | drvinfo->cylinders == h->drv[drv_index]->cylinders)) | |
a72da29b MM |
1892 | /* The disk is unchanged, nothing to update */ |
1893 | goto freeret; | |
a72da29b | 1894 | |
6ae5ce8e MM |
1895 | /* If we get here it's not the same disk, or something's changed, |
1896 | * so we need to * deregister it, and re-register it, if it's not | |
1897 | * in use. | |
1898 | * If the disk already exists then deregister it before proceeding | |
1899 | * (unless it's the first disk (for the controller node). | |
1900 | */ | |
9cef0d2f | 1901 | if (h->drv[drv_index]->raid_level != -1 && drv_index != 0) { |
a72da29b | 1902 | printk(KERN_WARNING "disk %d has changed.\n", drv_index); |
ddd47442 | 1903 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
9cef0d2f | 1904 | h->drv[drv_index]->busy_configuring = 1; |
ddd47442 | 1905 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
e14ac670 | 1906 | |
9cef0d2f | 1907 | /* deregister_disk sets h->drv[drv_index]->queue = NULL |
6ae5ce8e MM |
1908 | * which keeps the interrupt handler from starting |
1909 | * the queue. | |
1910 | */ | |
2d11d993 | 1911 | ret = deregister_disk(h, drv_index, 0, via_ioctl); |
ddd47442 MM |
1912 | } |
1913 | ||
1914 | /* If the disk is in use return */ | |
1915 | if (ret) | |
a72da29b MM |
1916 | goto freeret; |
1917 | ||
6ae5ce8e | 1918 | /* Save the new information from cciss_geometry_inquiry |
9cef0d2f SC |
1919 | * and serial number inquiry. If the disk was deregistered |
1920 | * above, then h->drv[drv_index] will be NULL. | |
6ae5ce8e | 1921 | */ |
9cef0d2f SC |
1922 | if (h->drv[drv_index] == NULL) { |
1923 | drvinfo->device_initialized = 0; | |
1924 | h->drv[drv_index] = drvinfo; | |
1925 | drvinfo = NULL; /* so it won't be freed below. */ | |
1926 | } else { | |
1927 | /* special case for cxd0 */ | |
1928 | h->drv[drv_index]->block_size = drvinfo->block_size; | |
1929 | h->drv[drv_index]->nr_blocks = drvinfo->nr_blocks; | |
1930 | h->drv[drv_index]->heads = drvinfo->heads; | |
1931 | h->drv[drv_index]->sectors = drvinfo->sectors; | |
1932 | h->drv[drv_index]->cylinders = drvinfo->cylinders; | |
1933 | h->drv[drv_index]->raid_level = drvinfo->raid_level; | |
1934 | memcpy(h->drv[drv_index]->serial_no, drvinfo->serial_no, 16); | |
1935 | memcpy(h->drv[drv_index]->vendor, drvinfo->vendor, | |
1936 | VENDOR_LEN + 1); | |
1937 | memcpy(h->drv[drv_index]->model, drvinfo->model, MODEL_LEN + 1); | |
1938 | memcpy(h->drv[drv_index]->rev, drvinfo->rev, REV_LEN + 1); | |
1939 | } | |
ddd47442 MM |
1940 | |
1941 | ++h->num_luns; | |
1942 | disk = h->gendisk[drv_index]; | |
9cef0d2f | 1943 | set_capacity(disk, h->drv[drv_index]->nr_blocks); |
ddd47442 | 1944 | |
6ae5ce8e MM |
1945 | /* If it's not disk 0 (drv_index != 0) |
1946 | * or if it was disk 0, but there was previously | |
1947 | * no actual corresponding configured logical drive | |
1948 | * (raid_leve == -1) then we want to update the | |
1949 | * logical drive's information. | |
1950 | */ | |
361e9b07 SC |
1951 | if (drv_index || first_time) { |
1952 | if (cciss_add_disk(h, disk, drv_index) != 0) { | |
1953 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 1954 | cciss_free_drive_info(h, drv_index); |
361e9b07 SC |
1955 | printk(KERN_WARNING "cciss:%d could not update " |
1956 | "disk %d\n", h->ctlr, drv_index); | |
1957 | --h->num_luns; | |
1958 | } | |
1959 | } | |
ddd47442 | 1960 | |
6ae5ce8e | 1961 | freeret: |
ddd47442 | 1962 | kfree(inq_buff); |
a72da29b | 1963 | kfree(drvinfo); |
ddd47442 | 1964 | return; |
6ae5ce8e | 1965 | mem_msg: |
ddd47442 MM |
1966 | printk(KERN_ERR "cciss: out of memory\n"); |
1967 | goto freeret; | |
1968 | } | |
1969 | ||
1970 | /* This function will find the first index of the controllers drive array | |
9cef0d2f SC |
1971 | * that has a null drv pointer and allocate the drive info struct and |
1972 | * will return that index This is where new drives will be added. | |
1973 | * If the index to be returned is greater than the highest_lun index for | |
1974 | * the controller then highest_lun is set * to this new index. | |
1975 | * If there are no available indexes or if tha allocation fails, then -1 | |
1976 | * is returned. * "controller_node" is used to know if this is a real | |
1977 | * logical drive, or just the controller node, which determines if this | |
1978 | * counts towards highest_lun. | |
7c832835 | 1979 | */ |
9cef0d2f | 1980 | static int cciss_alloc_drive_info(ctlr_info_t *h, int controller_node) |
ddd47442 MM |
1981 | { |
1982 | int i; | |
9cef0d2f | 1983 | drive_info_struct *drv; |
ddd47442 | 1984 | |
9cef0d2f | 1985 | /* Search for an empty slot for our drive info */ |
7c832835 | 1986 | for (i = 0; i < CISS_MAX_LUN; i++) { |
9cef0d2f SC |
1987 | |
1988 | /* if not cxd0 case, and it's occupied, skip it. */ | |
1989 | if (h->drv[i] && i != 0) | |
1990 | continue; | |
1991 | /* | |
1992 | * If it's cxd0 case, and drv is alloc'ed already, and a | |
1993 | * disk is configured there, skip it. | |
1994 | */ | |
1995 | if (i == 0 && h->drv[i] && h->drv[i]->raid_level != -1) | |
1996 | continue; | |
1997 | ||
1998 | /* | |
1999 | * We've found an empty slot. Update highest_lun | |
2000 | * provided this isn't just the fake cxd0 controller node. | |
2001 | */ | |
2002 | if (i > h->highest_lun && !controller_node) | |
2003 | h->highest_lun = i; | |
2004 | ||
2005 | /* If adding a real disk at cxd0, and it's already alloc'ed */ | |
2006 | if (i == 0 && h->drv[i] != NULL) | |
ddd47442 | 2007 | return i; |
9cef0d2f SC |
2008 | |
2009 | /* | |
2010 | * Found an empty slot, not already alloc'ed. Allocate it. | |
2011 | * Mark it with raid_level == -1, so we know it's new later on. | |
2012 | */ | |
2013 | drv = kzalloc(sizeof(*drv), GFP_KERNEL); | |
2014 | if (!drv) | |
2015 | return -1; | |
2016 | drv->raid_level = -1; /* so we know it's new */ | |
2017 | h->drv[i] = drv; | |
2018 | return i; | |
ddd47442 MM |
2019 | } |
2020 | return -1; | |
2021 | } | |
2022 | ||
9cef0d2f SC |
2023 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index) |
2024 | { | |
2025 | kfree(h->drv[drv_index]); | |
2026 | h->drv[drv_index] = NULL; | |
2027 | } | |
2028 | ||
361e9b07 SC |
2029 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index) |
2030 | { | |
2031 | put_disk(h->gendisk[drv_index]); | |
2032 | h->gendisk[drv_index] = NULL; | |
2033 | } | |
2034 | ||
6ae5ce8e MM |
2035 | /* cciss_add_gendisk finds a free hba[]->drv structure |
2036 | * and allocates a gendisk if needed, and sets the lunid | |
2037 | * in the drvinfo structure. It returns the index into | |
2038 | * the ->drv[] array, or -1 if none are free. | |
2039 | * is_controller_node indicates whether highest_lun should | |
2040 | * count this disk, or if it's only being added to provide | |
2041 | * a means to talk to the controller in case no logical | |
2042 | * drives have yet been configured. | |
2043 | */ | |
39ccf9a6 SC |
2044 | static int cciss_add_gendisk(ctlr_info_t *h, unsigned char lunid[], |
2045 | int controller_node) | |
6ae5ce8e MM |
2046 | { |
2047 | int drv_index; | |
2048 | ||
9cef0d2f | 2049 | drv_index = cciss_alloc_drive_info(h, controller_node); |
6ae5ce8e MM |
2050 | if (drv_index == -1) |
2051 | return -1; | |
8ce51966 | 2052 | |
6ae5ce8e MM |
2053 | /*Check if the gendisk needs to be allocated */ |
2054 | if (!h->gendisk[drv_index]) { | |
2055 | h->gendisk[drv_index] = | |
2056 | alloc_disk(1 << NWD_SHIFT); | |
2057 | if (!h->gendisk[drv_index]) { | |
2058 | printk(KERN_ERR "cciss%d: could not " | |
2059 | "allocate a new disk %d\n", | |
2060 | h->ctlr, drv_index); | |
9cef0d2f | 2061 | goto err_free_drive_info; |
6ae5ce8e MM |
2062 | } |
2063 | } | |
9cef0d2f SC |
2064 | memcpy(h->drv[drv_index]->LunID, lunid, |
2065 | sizeof(h->drv[drv_index]->LunID)); | |
2066 | if (cciss_create_ld_sysfs_entry(h, drv_index)) | |
2067 | goto err_free_disk; | |
6ae5ce8e MM |
2068 | /* Don't need to mark this busy because nobody */ |
2069 | /* else knows about this disk yet to contend */ | |
2070 | /* for access to it. */ | |
9cef0d2f | 2071 | h->drv[drv_index]->busy_configuring = 0; |
6ae5ce8e MM |
2072 | wmb(); |
2073 | return drv_index; | |
7fe06326 AP |
2074 | |
2075 | err_free_disk: | |
361e9b07 | 2076 | cciss_free_gendisk(h, drv_index); |
9cef0d2f SC |
2077 | err_free_drive_info: |
2078 | cciss_free_drive_info(h, drv_index); | |
7fe06326 | 2079 | return -1; |
6ae5ce8e MM |
2080 | } |
2081 | ||
2082 | /* This is for the special case of a controller which | |
2083 | * has no logical drives. In this case, we still need | |
2084 | * to register a disk so the controller can be accessed | |
2085 | * by the Array Config Utility. | |
2086 | */ | |
2087 | static void cciss_add_controller_node(ctlr_info_t *h) | |
2088 | { | |
2089 | struct gendisk *disk; | |
2090 | int drv_index; | |
2091 | ||
2092 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ | |
2093 | return; | |
2094 | ||
39ccf9a6 | 2095 | drv_index = cciss_add_gendisk(h, CTLR_LUNID, 1); |
361e9b07 SC |
2096 | if (drv_index == -1) |
2097 | goto error; | |
9cef0d2f SC |
2098 | h->drv[drv_index]->block_size = 512; |
2099 | h->drv[drv_index]->nr_blocks = 0; | |
2100 | h->drv[drv_index]->heads = 0; | |
2101 | h->drv[drv_index]->sectors = 0; | |
2102 | h->drv[drv_index]->cylinders = 0; | |
2103 | h->drv[drv_index]->raid_level = -1; | |
2104 | memset(h->drv[drv_index]->serial_no, 0, 16); | |
6ae5ce8e | 2105 | disk = h->gendisk[drv_index]; |
361e9b07 SC |
2106 | if (cciss_add_disk(h, disk, drv_index) == 0) |
2107 | return; | |
2108 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 2109 | cciss_free_drive_info(h, drv_index); |
361e9b07 SC |
2110 | error: |
2111 | printk(KERN_WARNING "cciss%d: could not " | |
2112 | "add disk 0.\n", h->ctlr); | |
2113 | return; | |
6ae5ce8e MM |
2114 | } |
2115 | ||
ddd47442 | 2116 | /* This function will add and remove logical drives from the Logical |
d14c4ab5 | 2117 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
2118 | * so that mount points are preserved until the next reboot. This allows |
2119 | * for the removal of logical drives in the middle of the drive array | |
2120 | * without a re-ordering of those drives. | |
2121 | * INPUT | |
2122 | * h = The controller to perform the operations on | |
7c832835 | 2123 | */ |
2d11d993 SC |
2124 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, |
2125 | int via_ioctl) | |
1da177e4 | 2126 | { |
ddd47442 MM |
2127 | int ctlr = h->ctlr; |
2128 | int num_luns; | |
2129 | ReportLunData_struct *ld_buff = NULL; | |
ddd47442 MM |
2130 | int return_code; |
2131 | int listlength = 0; | |
2132 | int i; | |
2133 | int drv_found; | |
2134 | int drv_index = 0; | |
39ccf9a6 | 2135 | unsigned char lunid[8] = CTLR_LUNID; |
1da177e4 | 2136 | unsigned long flags; |
ddd47442 | 2137 | |
6ae5ce8e MM |
2138 | if (!capable(CAP_SYS_RAWIO)) |
2139 | return -EPERM; | |
2140 | ||
ddd47442 MM |
2141 | /* Set busy_configuring flag for this operation */ |
2142 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 2143 | if (h->busy_configuring) { |
ddd47442 MM |
2144 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2145 | return -EBUSY; | |
2146 | } | |
2147 | h->busy_configuring = 1; | |
a72da29b | 2148 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
ddd47442 | 2149 | |
a72da29b MM |
2150 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
2151 | if (ld_buff == NULL) | |
2152 | goto mem_msg; | |
2153 | ||
2154 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
b57695fe | 2155 | sizeof(ReportLunData_struct), |
2156 | 0, CTLR_LUNID, TYPE_CMD); | |
ddd47442 | 2157 | |
a72da29b MM |
2158 | if (return_code == IO_OK) |
2159 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); | |
2160 | else { /* reading number of logical volumes failed */ | |
2161 | printk(KERN_WARNING "cciss: report logical volume" | |
2162 | " command failed\n"); | |
2163 | listlength = 0; | |
2164 | goto freeret; | |
2165 | } | |
2166 | ||
2167 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
2168 | if (num_luns > CISS_MAX_LUN) { | |
2169 | num_luns = CISS_MAX_LUN; | |
2170 | printk(KERN_WARNING "cciss: more luns configured" | |
2171 | " on controller than can be handled by" | |
2172 | " this driver.\n"); | |
2173 | } | |
2174 | ||
6ae5ce8e MM |
2175 | if (num_luns == 0) |
2176 | cciss_add_controller_node(h); | |
2177 | ||
2178 | /* Compare controller drive array to driver's drive array | |
2179 | * to see if any drives are missing on the controller due | |
2180 | * to action of Array Config Utility (user deletes drive) | |
2181 | * and deregister logical drives which have disappeared. | |
2182 | */ | |
a72da29b MM |
2183 | for (i = 0; i <= h->highest_lun; i++) { |
2184 | int j; | |
2185 | drv_found = 0; | |
d8a0be6a SC |
2186 | |
2187 | /* skip holes in the array from already deleted drives */ | |
9cef0d2f | 2188 | if (h->drv[i] == NULL) |
d8a0be6a SC |
2189 | continue; |
2190 | ||
a72da29b | 2191 | for (j = 0; j < num_luns; j++) { |
39ccf9a6 | 2192 | memcpy(lunid, &ld_buff->LUN[j][0], sizeof(lunid)); |
9cef0d2f | 2193 | if (memcmp(h->drv[i]->LunID, lunid, |
39ccf9a6 | 2194 | sizeof(lunid)) == 0) { |
a72da29b MM |
2195 | drv_found = 1; |
2196 | break; | |
2197 | } | |
2198 | } | |
2199 | if (!drv_found) { | |
2200 | /* Deregister it from the OS, it's gone. */ | |
2201 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
9cef0d2f | 2202 | h->drv[i]->busy_configuring = 1; |
a72da29b | 2203 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2d11d993 | 2204 | return_code = deregister_disk(h, i, 1, via_ioctl); |
9cef0d2f SC |
2205 | if (h->drv[i] != NULL) |
2206 | h->drv[i]->busy_configuring = 0; | |
ddd47442 | 2207 | } |
a72da29b | 2208 | } |
ddd47442 | 2209 | |
a72da29b MM |
2210 | /* Compare controller drive array to driver's drive array. |
2211 | * Check for updates in the drive information and any new drives | |
2212 | * on the controller due to ACU adding logical drives, or changing | |
2213 | * a logical drive's size, etc. Reregister any new/changed drives | |
2214 | */ | |
2215 | for (i = 0; i < num_luns; i++) { | |
2216 | int j; | |
ddd47442 | 2217 | |
a72da29b | 2218 | drv_found = 0; |
ddd47442 | 2219 | |
39ccf9a6 | 2220 | memcpy(lunid, &ld_buff->LUN[i][0], sizeof(lunid)); |
a72da29b MM |
2221 | /* Find if the LUN is already in the drive array |
2222 | * of the driver. If so then update its info | |
2223 | * if not in use. If it does not exist then find | |
2224 | * the first free index and add it. | |
2225 | */ | |
2226 | for (j = 0; j <= h->highest_lun; j++) { | |
9cef0d2f SC |
2227 | if (h->drv[j] != NULL && |
2228 | memcmp(h->drv[j]->LunID, lunid, | |
2229 | sizeof(h->drv[j]->LunID)) == 0) { | |
a72da29b MM |
2230 | drv_index = j; |
2231 | drv_found = 1; | |
2232 | break; | |
ddd47442 | 2233 | } |
a72da29b | 2234 | } |
ddd47442 | 2235 | |
a72da29b MM |
2236 | /* check if the drive was found already in the array */ |
2237 | if (!drv_found) { | |
eece695f | 2238 | drv_index = cciss_add_gendisk(h, lunid, 0); |
a72da29b MM |
2239 | if (drv_index == -1) |
2240 | goto freeret; | |
a72da29b | 2241 | } |
2d11d993 SC |
2242 | cciss_update_drive_info(ctlr, drv_index, first_time, |
2243 | via_ioctl); | |
a72da29b | 2244 | } /* end for */ |
ddd47442 | 2245 | |
6ae5ce8e | 2246 | freeret: |
ddd47442 MM |
2247 | kfree(ld_buff); |
2248 | h->busy_configuring = 0; | |
2249 | /* We return -1 here to tell the ACU that we have registered/updated | |
2250 | * all of the drives that we can and to keep it from calling us | |
2251 | * additional times. | |
7c832835 | 2252 | */ |
ddd47442 | 2253 | return -1; |
6ae5ce8e | 2254 | mem_msg: |
ddd47442 | 2255 | printk(KERN_ERR "cciss: out of memory\n"); |
a72da29b | 2256 | h->busy_configuring = 0; |
ddd47442 MM |
2257 | goto freeret; |
2258 | } | |
2259 | ||
9ddb27b4 SC |
2260 | static void cciss_clear_drive_info(drive_info_struct *drive_info) |
2261 | { | |
2262 | /* zero out the disk size info */ | |
2263 | drive_info->nr_blocks = 0; | |
2264 | drive_info->block_size = 0; | |
2265 | drive_info->heads = 0; | |
2266 | drive_info->sectors = 0; | |
2267 | drive_info->cylinders = 0; | |
2268 | drive_info->raid_level = -1; | |
2269 | memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no)); | |
2270 | memset(drive_info->model, 0, sizeof(drive_info->model)); | |
2271 | memset(drive_info->rev, 0, sizeof(drive_info->rev)); | |
2272 | memset(drive_info->vendor, 0, sizeof(drive_info->vendor)); | |
2273 | /* | |
2274 | * don't clear the LUNID though, we need to remember which | |
2275 | * one this one is. | |
2276 | */ | |
2277 | } | |
2278 | ||
ddd47442 MM |
2279 | /* This function will deregister the disk and it's queue from the |
2280 | * kernel. It must be called with the controller lock held and the | |
2281 | * drv structures busy_configuring flag set. It's parameters are: | |
2282 | * | |
2283 | * disk = This is the disk to be deregistered | |
2284 | * drv = This is the drive_info_struct associated with the disk to be | |
2285 | * deregistered. It contains information about the disk used | |
2286 | * by the driver. | |
2287 | * clear_all = This flag determines whether or not the disk information | |
2288 | * is going to be completely cleared out and the highest_lun | |
2289 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 2290 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
2291 | * the highest_lun should be left unchanged and the LunID |
2292 | * should not be cleared. | |
2d11d993 SC |
2293 | * via_ioctl |
2294 | * This indicates whether we've reached this path via ioctl. | |
2295 | * This affects the maximum usage count allowed for c0d0 to be messed with. | |
2296 | * If this path is reached via ioctl(), then the max_usage_count will | |
2297 | * be 1, as the process calling ioctl() has got to have the device open. | |
2298 | * If we get here via sysfs, then the max usage count will be zero. | |
ddd47442 | 2299 | */ |
a0ea8622 | 2300 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
2d11d993 | 2301 | int clear_all, int via_ioctl) |
ddd47442 | 2302 | { |
799202cb | 2303 | int i; |
a0ea8622 SC |
2304 | struct gendisk *disk; |
2305 | drive_info_struct *drv; | |
9cef0d2f | 2306 | int recalculate_highest_lun; |
1da177e4 LT |
2307 | |
2308 | if (!capable(CAP_SYS_RAWIO)) | |
2309 | return -EPERM; | |
2310 | ||
9cef0d2f | 2311 | drv = h->drv[drv_index]; |
a0ea8622 SC |
2312 | disk = h->gendisk[drv_index]; |
2313 | ||
1da177e4 | 2314 | /* make sure logical volume is NOT is use */ |
7c832835 | 2315 | if (clear_all || (h->gendisk[0] == disk)) { |
2d11d993 | 2316 | if (drv->usage_count > via_ioctl) |
7c832835 BH |
2317 | return -EBUSY; |
2318 | } else if (drv->usage_count > 0) | |
2319 | return -EBUSY; | |
1da177e4 | 2320 | |
9cef0d2f SC |
2321 | recalculate_highest_lun = (drv == h->drv[h->highest_lun]); |
2322 | ||
ddd47442 MM |
2323 | /* invalidate the devices and deregister the disk. If it is disk |
2324 | * zero do not deregister it but just zero out it's values. This | |
2325 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
2326 | */ |
2327 | if (h->gendisk[0] != disk) { | |
5a9df732 | 2328 | struct request_queue *q = disk->queue; |
097d0264 | 2329 | if (disk->flags & GENHD_FL_UP) { |
8ce51966 | 2330 | cciss_destroy_ld_sysfs_entry(h, drv_index, 0); |
5a9df732 | 2331 | del_gendisk(disk); |
097d0264 | 2332 | } |
9cef0d2f | 2333 | if (q) |
5a9df732 | 2334 | blk_cleanup_queue(q); |
5a9df732 AB |
2335 | /* If clear_all is set then we are deleting the logical |
2336 | * drive, not just refreshing its info. For drives | |
2337 | * other than disk 0 we will call put_disk. We do not | |
2338 | * do this for disk 0 as we need it to be able to | |
2339 | * configure the controller. | |
a72da29b | 2340 | */ |
5a9df732 AB |
2341 | if (clear_all){ |
2342 | /* This isn't pretty, but we need to find the | |
2343 | * disk in our array and NULL our the pointer. | |
2344 | * This is so that we will call alloc_disk if | |
2345 | * this index is used again later. | |
a72da29b | 2346 | */ |
5a9df732 | 2347 | for (i=0; i < CISS_MAX_LUN; i++){ |
a72da29b | 2348 | if (h->gendisk[i] == disk) { |
5a9df732 AB |
2349 | h->gendisk[i] = NULL; |
2350 | break; | |
799202cb | 2351 | } |
799202cb | 2352 | } |
5a9df732 | 2353 | put_disk(disk); |
ddd47442 | 2354 | } |
799202cb MM |
2355 | } else { |
2356 | set_capacity(disk, 0); | |
9cef0d2f | 2357 | cciss_clear_drive_info(drv); |
ddd47442 MM |
2358 | } |
2359 | ||
2360 | --h->num_luns; | |
9cef0d2f SC |
2361 | |
2362 | /* if it was the last disk, find the new hightest lun */ | |
2363 | if (clear_all && recalculate_highest_lun) { | |
2364 | int i, newhighest = -1; | |
2365 | for (i = 0; i <= h->highest_lun; i++) { | |
2366 | /* if the disk has size > 0, it is available */ | |
2367 | if (h->drv[i] && h->drv[i]->heads) | |
2368 | newhighest = i; | |
1da177e4 | 2369 | } |
9cef0d2f | 2370 | h->highest_lun = newhighest; |
ddd47442 | 2371 | } |
e2019b58 | 2372 | return 0; |
1da177e4 | 2373 | } |
ddd47442 | 2374 | |
b57695fe | 2375 | static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, |
2376 | size_t size, __u8 page_code, unsigned char *scsi3addr, | |
2377 | int cmd_type) | |
1da177e4 | 2378 | { |
7c832835 | 2379 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
2380 | u64bit buff_dma_handle; |
2381 | int status = IO_OK; | |
2382 | ||
2383 | c->cmd_type = CMD_IOCTL_PEND; | |
2384 | c->Header.ReplyQueue = 0; | |
7c832835 | 2385 | if (buff != NULL) { |
1da177e4 | 2386 | c->Header.SGList = 1; |
7c832835 | 2387 | c->Header.SGTotal = 1; |
1da177e4 LT |
2388 | } else { |
2389 | c->Header.SGList = 0; | |
7c832835 | 2390 | c->Header.SGTotal = 0; |
1da177e4 LT |
2391 | } |
2392 | c->Header.Tag.lower = c->busaddr; | |
b57695fe | 2393 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
1da177e4 LT |
2394 | |
2395 | c->Request.Type.Type = cmd_type; | |
2396 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
2397 | switch (cmd) { |
2398 | case CISS_INQUIRY: | |
1da177e4 | 2399 | /* are we trying to read a vital product page */ |
7c832835 | 2400 | if (page_code != 0) { |
1da177e4 LT |
2401 | c->Request.CDB[1] = 0x01; |
2402 | c->Request.CDB[2] = page_code; | |
2403 | } | |
2404 | c->Request.CDBLen = 6; | |
7c832835 | 2405 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
2406 | c->Request.Type.Direction = XFER_READ; |
2407 | c->Request.Timeout = 0; | |
7c832835 BH |
2408 | c->Request.CDB[0] = CISS_INQUIRY; |
2409 | c->Request.CDB[4] = size & 0xFF; | |
2410 | break; | |
1da177e4 LT |
2411 | case CISS_REPORT_LOG: |
2412 | case CISS_REPORT_PHYS: | |
7c832835 | 2413 | /* Talking to controller so It's a physical command |
1da177e4 | 2414 | mode = 00 target = 0. Nothing to write. |
7c832835 | 2415 | */ |
1da177e4 LT |
2416 | c->Request.CDBLen = 12; |
2417 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2418 | c->Request.Type.Direction = XFER_READ; | |
2419 | c->Request.Timeout = 0; | |
2420 | c->Request.CDB[0] = cmd; | |
7c832835 | 2421 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
1da177e4 LT |
2422 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
2423 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
2424 | c->Request.CDB[9] = size & 0xFF; | |
2425 | break; | |
2426 | ||
2427 | case CCISS_READ_CAPACITY: | |
1da177e4 LT |
2428 | c->Request.CDBLen = 10; |
2429 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2430 | c->Request.Type.Direction = XFER_READ; | |
2431 | c->Request.Timeout = 0; | |
2432 | c->Request.CDB[0] = cmd; | |
7c832835 | 2433 | break; |
00988a35 | 2434 | case CCISS_READ_CAPACITY_16: |
00988a35 MMOD |
2435 | c->Request.CDBLen = 16; |
2436 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2437 | c->Request.Type.Direction = XFER_READ; | |
2438 | c->Request.Timeout = 0; | |
2439 | c->Request.CDB[0] = cmd; | |
2440 | c->Request.CDB[1] = 0x10; | |
2441 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
2442 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
2443 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
2444 | c->Request.CDB[13] = size & 0xFF; | |
2445 | c->Request.Timeout = 0; | |
2446 | c->Request.CDB[0] = cmd; | |
2447 | break; | |
1da177e4 LT |
2448 | case CCISS_CACHE_FLUSH: |
2449 | c->Request.CDBLen = 12; | |
2450 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2451 | c->Request.Type.Direction = XFER_WRITE; | |
2452 | c->Request.Timeout = 0; | |
2453 | c->Request.CDB[0] = BMIC_WRITE; | |
2454 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 2455 | break; |
88f627ae | 2456 | case TEST_UNIT_READY: |
88f627ae SC |
2457 | c->Request.CDBLen = 6; |
2458 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2459 | c->Request.Type.Direction = XFER_NONE; | |
2460 | c->Request.Timeout = 0; | |
2461 | break; | |
1da177e4 LT |
2462 | default: |
2463 | printk(KERN_WARNING | |
7c832835 | 2464 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 2465 | return IO_ERROR; |
1da177e4 LT |
2466 | } |
2467 | } else if (cmd_type == TYPE_MSG) { | |
2468 | switch (cmd) { | |
7c832835 | 2469 | case 0: /* ABORT message */ |
3da8b713 | 2470 | c->Request.CDBLen = 12; |
2471 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2472 | c->Request.Type.Direction = XFER_WRITE; | |
2473 | c->Request.Timeout = 0; | |
7c832835 BH |
2474 | c->Request.CDB[0] = cmd; /* abort */ |
2475 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 2476 | /* buff contains the tag of the command to abort */ |
2477 | memcpy(&c->Request.CDB[4], buff, 8); | |
2478 | break; | |
7c832835 | 2479 | case 1: /* RESET message */ |
88f627ae | 2480 | c->Request.CDBLen = 16; |
3da8b713 | 2481 | c->Request.Type.Attribute = ATTR_SIMPLE; |
88f627ae | 2482 | c->Request.Type.Direction = XFER_NONE; |
3da8b713 | 2483 | c->Request.Timeout = 0; |
2484 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 | 2485 | c->Request.CDB[0] = cmd; /* reset */ |
88f627ae | 2486 | c->Request.CDB[1] = 0x03; /* reset a target */ |
00988a35 | 2487 | break; |
1da177e4 LT |
2488 | case 3: /* No-Op message */ |
2489 | c->Request.CDBLen = 1; | |
2490 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2491 | c->Request.Type.Direction = XFER_WRITE; | |
2492 | c->Request.Timeout = 0; | |
2493 | c->Request.CDB[0] = cmd; | |
2494 | break; | |
2495 | default: | |
2496 | printk(KERN_WARNING | |
7c832835 | 2497 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
2498 | return IO_ERROR; |
2499 | } | |
2500 | } else { | |
2501 | printk(KERN_WARNING | |
7c832835 | 2502 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
2503 | return IO_ERROR; |
2504 | } | |
2505 | /* Fill in the scatter gather information */ | |
2506 | if (size > 0) { | |
2507 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
2508 | buff, size, |
2509 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
2510 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
2511 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
2512 | c->SG[0].Len = size; | |
7c832835 | 2513 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
2514 | } |
2515 | return status; | |
2516 | } | |
7c832835 | 2517 | |
3c2ab402 | 2518 | static int check_target_status(ctlr_info_t *h, CommandList_struct *c) |
2519 | { | |
2520 | switch (c->err_info->ScsiStatus) { | |
2521 | case SAM_STAT_GOOD: | |
2522 | return IO_OK; | |
2523 | case SAM_STAT_CHECK_CONDITION: | |
2524 | switch (0xf & c->err_info->SenseInfo[2]) { | |
2525 | case 0: return IO_OK; /* no sense */ | |
2526 | case 1: return IO_OK; /* recovered error */ | |
2527 | default: | |
2528 | printk(KERN_WARNING "cciss%d: cmd 0x%02x " | |
2529 | "check condition, sense key = 0x%02x\n", | |
2530 | h->ctlr, c->Request.CDB[0], | |
2531 | c->err_info->SenseInfo[2]); | |
2532 | } | |
2533 | break; | |
2534 | default: | |
2535 | printk(KERN_WARNING "cciss%d: cmd 0x%02x" | |
2536 | "scsi status = 0x%02x\n", h->ctlr, | |
2537 | c->Request.CDB[0], c->err_info->ScsiStatus); | |
2538 | break; | |
2539 | } | |
2540 | return IO_ERROR; | |
2541 | } | |
2542 | ||
789a424a | 2543 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 | 2544 | { |
5390cfc3 | 2545 | int return_status = IO_OK; |
7c832835 | 2546 | |
789a424a | 2547 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
2548 | return IO_OK; | |
5390cfc3 | 2549 | |
2550 | switch (c->err_info->CommandStatus) { | |
2551 | case CMD_TARGET_STATUS: | |
3c2ab402 | 2552 | return_status = check_target_status(h, c); |
5390cfc3 | 2553 | break; |
2554 | case CMD_DATA_UNDERRUN: | |
2555 | case CMD_DATA_OVERRUN: | |
2556 | /* expected for inquiry and report lun commands */ | |
2557 | break; | |
2558 | case CMD_INVALID: | |
789a424a | 2559 | printk(KERN_WARNING "cciss: cmd 0x%02x is " |
5390cfc3 | 2560 | "reported invalid\n", c->Request.CDB[0]); |
2561 | return_status = IO_ERROR; | |
2562 | break; | |
2563 | case CMD_PROTOCOL_ERR: | |
2564 | printk(KERN_WARNING "cciss: cmd 0x%02x has " | |
2565 | "protocol error \n", c->Request.CDB[0]); | |
2566 | return_status = IO_ERROR; | |
2567 | break; | |
2568 | case CMD_HARDWARE_ERR: | |
2569 | printk(KERN_WARNING "cciss: cmd 0x%02x had " | |
2570 | " hardware error\n", c->Request.CDB[0]); | |
2571 | return_status = IO_ERROR; | |
2572 | break; | |
2573 | case CMD_CONNECTION_LOST: | |
2574 | printk(KERN_WARNING "cciss: cmd 0x%02x had " | |
2575 | "connection lost\n", c->Request.CDB[0]); | |
2576 | return_status = IO_ERROR; | |
2577 | break; | |
2578 | case CMD_ABORTED: | |
2579 | printk(KERN_WARNING "cciss: cmd 0x%02x was " | |
2580 | "aborted\n", c->Request.CDB[0]); | |
2581 | return_status = IO_ERROR; | |
2582 | break; | |
2583 | case CMD_ABORT_FAILED: | |
2584 | printk(KERN_WARNING "cciss: cmd 0x%02x reports " | |
2585 | "abort failed\n", c->Request.CDB[0]); | |
2586 | return_status = IO_ERROR; | |
2587 | break; | |
2588 | case CMD_UNSOLICITED_ABORT: | |
2589 | printk(KERN_WARNING | |
2590 | "cciss%d: unsolicited abort 0x%02x\n", h->ctlr, | |
2591 | c->Request.CDB[0]); | |
789a424a | 2592 | return_status = IO_NEEDS_RETRY; |
5390cfc3 | 2593 | break; |
2594 | default: | |
2595 | printk(KERN_WARNING "cciss: cmd 0x%02x returned " | |
2596 | "unknown status %x\n", c->Request.CDB[0], | |
2597 | c->err_info->CommandStatus); | |
2598 | return_status = IO_ERROR; | |
7c832835 | 2599 | } |
789a424a | 2600 | return return_status; |
2601 | } | |
2602 | ||
2603 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, | |
2604 | int attempt_retry) | |
2605 | { | |
2606 | DECLARE_COMPLETION_ONSTACK(wait); | |
2607 | u64bit buff_dma_handle; | |
2608 | unsigned long flags; | |
2609 | int return_status = IO_OK; | |
2610 | ||
2611 | resend_cmd2: | |
2612 | c->waiting = &wait; | |
2613 | /* Put the request on the tail of the queue and send it */ | |
2614 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
2615 | addQ(&h->reqQ, c); | |
2616 | h->Qdepth++; | |
2617 | start_io(h); | |
2618 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
2619 | ||
2620 | wait_for_completion(&wait); | |
2621 | ||
2622 | if (c->err_info->CommandStatus == 0 || !attempt_retry) | |
2623 | goto command_done; | |
2624 | ||
2625 | return_status = process_sendcmd_error(h, c); | |
2626 | ||
2627 | if (return_status == IO_NEEDS_RETRY && | |
2628 | c->retry_count < MAX_CMD_RETRIES) { | |
2629 | printk(KERN_WARNING "cciss%d: retrying 0x%02x\n", h->ctlr, | |
2630 | c->Request.CDB[0]); | |
2631 | c->retry_count++; | |
2632 | /* erase the old error information */ | |
2633 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2634 | return_status = IO_OK; | |
2635 | INIT_COMPLETION(wait); | |
2636 | goto resend_cmd2; | |
2637 | } | |
5390cfc3 | 2638 | |
2639 | command_done: | |
1da177e4 | 2640 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
2641 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2642 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
2643 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
2644 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
5390cfc3 | 2645 | return return_status; |
2646 | } | |
2647 | ||
b57695fe | 2648 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
2649 | __u8 page_code, unsigned char scsi3addr[], | |
2650 | int cmd_type) | |
5390cfc3 | 2651 | { |
2652 | ctlr_info_t *h = hba[ctlr]; | |
2653 | CommandList_struct *c; | |
2654 | int return_status; | |
2655 | ||
2656 | c = cmd_alloc(h, 0); | |
2657 | if (!c) | |
2658 | return -ENOMEM; | |
b57695fe | 2659 | return_status = fill_cmd(c, cmd, ctlr, buff, size, page_code, |
2660 | scsi3addr, cmd_type); | |
5390cfc3 | 2661 | if (return_status == IO_OK) |
789a424a | 2662 | return_status = sendcmd_withirq_core(h, c, 1); |
2663 | ||
1da177e4 | 2664 | cmd_free(h, c, 0); |
7c832835 | 2665 | return return_status; |
1da177e4 | 2666 | } |
7c832835 | 2667 | |
1da177e4 | 2668 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
00988a35 | 2669 | int withirq, sector_t total_size, |
7c832835 BH |
2670 | unsigned int block_size, |
2671 | InquiryData_struct *inq_buff, | |
2672 | drive_info_struct *drv) | |
1da177e4 LT |
2673 | { |
2674 | int return_code; | |
00988a35 | 2675 | unsigned long t; |
b57695fe | 2676 | unsigned char scsi3addr[8]; |
00988a35 | 2677 | |
1da177e4 | 2678 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
b57695fe | 2679 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
1da177e4 LT |
2680 | if (withirq) |
2681 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, | |
b57695fe | 2682 | inq_buff, sizeof(*inq_buff), |
2683 | 0xC1, scsi3addr, TYPE_CMD); | |
1da177e4 LT |
2684 | else |
2685 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, | |
b57695fe | 2686 | sizeof(*inq_buff), 0xC1, scsi3addr, |
7c832835 | 2687 | TYPE_CMD); |
1da177e4 | 2688 | if (return_code == IO_OK) { |
7c832835 | 2689 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 2690 | printk(KERN_WARNING |
7c832835 BH |
2691 | "cciss: reading geometry failed, volume " |
2692 | "does not support reading geometry\n"); | |
1da177e4 | 2693 | drv->heads = 255; |
7c832835 | 2694 | drv->sectors = 32; // Sectors per track |
7f42d3b8 | 2695 | drv->cylinders = total_size + 1; |
89f97ad1 | 2696 | drv->raid_level = RAID_UNKNOWN; |
1da177e4 | 2697 | } else { |
1da177e4 LT |
2698 | drv->heads = inq_buff->data_byte[6]; |
2699 | drv->sectors = inq_buff->data_byte[7]; | |
2700 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
2701 | drv->cylinders += inq_buff->data_byte[5]; | |
2702 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
2703 | } |
2704 | drv->block_size = block_size; | |
97c06978 | 2705 | drv->nr_blocks = total_size + 1; |
3f7705ea MW |
2706 | t = drv->heads * drv->sectors; |
2707 | if (t > 1) { | |
97c06978 MMOD |
2708 | sector_t real_size = total_size + 1; |
2709 | unsigned long rem = sector_div(real_size, t); | |
3f7705ea | 2710 | if (rem) |
97c06978 MMOD |
2711 | real_size++; |
2712 | drv->cylinders = real_size; | |
1da177e4 | 2713 | } |
7c832835 | 2714 | } else { /* Get geometry failed */ |
1da177e4 LT |
2715 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
2716 | } | |
1da177e4 | 2717 | } |
7c832835 | 2718 | |
1da177e4 | 2719 | static void |
00988a35 | 2720 | cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size, |
7c832835 | 2721 | unsigned int *block_size) |
1da177e4 | 2722 | { |
00988a35 | 2723 | ReadCapdata_struct *buf; |
1da177e4 | 2724 | int return_code; |
b57695fe | 2725 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2726 | |
2727 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); | |
2728 | if (!buf) { | |
00988a35 MMOD |
2729 | printk(KERN_WARNING "cciss: out of memory\n"); |
2730 | return; | |
2731 | } | |
1aebe187 | 2732 | |
b57695fe | 2733 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
1da177e4 LT |
2734 | if (withirq) |
2735 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, | |
00988a35 | 2736 | ctlr, buf, sizeof(ReadCapdata_struct), |
b57695fe | 2737 | 0, scsi3addr, TYPE_CMD); |
1da177e4 LT |
2738 | else |
2739 | return_code = sendcmd(CCISS_READ_CAPACITY, | |
00988a35 | 2740 | ctlr, buf, sizeof(ReadCapdata_struct), |
b57695fe | 2741 | 0, scsi3addr, TYPE_CMD); |
1da177e4 | 2742 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2743 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
2744 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
7c832835 | 2745 | } else { /* read capacity command failed */ |
1da177e4 LT |
2746 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
2747 | *total_size = 0; | |
2748 | *block_size = BLOCK_SIZE; | |
2749 | } | |
00988a35 | 2750 | kfree(buf); |
00988a35 MMOD |
2751 | } |
2752 | ||
2753 | static void | |
2754 | cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) | |
2755 | { | |
2756 | ReadCapdata_struct_16 *buf; | |
2757 | int return_code; | |
b57695fe | 2758 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2759 | |
2760 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2761 | if (!buf) { | |
00988a35 MMOD |
2762 | printk(KERN_WARNING "cciss: out of memory\n"); |
2763 | return; | |
2764 | } | |
1aebe187 | 2765 | |
b57695fe | 2766 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
00988a35 MMOD |
2767 | if (withirq) { |
2768 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, | |
2769 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
b57695fe | 2770 | 0, scsi3addr, TYPE_CMD); |
00988a35 MMOD |
2771 | } |
2772 | else { | |
2773 | return_code = sendcmd(CCISS_READ_CAPACITY_16, | |
2774 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
b57695fe | 2775 | 0, scsi3addr, TYPE_CMD); |
00988a35 MMOD |
2776 | } |
2777 | if (return_code == IO_OK) { | |
4c1f2b31 AV |
2778 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
2779 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
00988a35 MMOD |
2780 | } else { /* read capacity command failed */ |
2781 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
2782 | *total_size = 0; | |
2783 | *block_size = BLOCK_SIZE; | |
2784 | } | |
7b92aadf | 2785 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2786 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2787 | kfree(buf); |
1da177e4 LT |
2788 | } |
2789 | ||
1da177e4 LT |
2790 | static int cciss_revalidate(struct gendisk *disk) |
2791 | { | |
2792 | ctlr_info_t *h = get_host(disk); | |
2793 | drive_info_struct *drv = get_drv(disk); | |
2794 | int logvol; | |
7c832835 | 2795 | int FOUND = 0; |
1da177e4 | 2796 | unsigned int block_size; |
00988a35 | 2797 | sector_t total_size; |
1da177e4 LT |
2798 | InquiryData_struct *inq_buff = NULL; |
2799 | ||
7c832835 | 2800 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
9cef0d2f | 2801 | if (memcmp(h->drv[logvol]->LunID, drv->LunID, |
39ccf9a6 | 2802 | sizeof(drv->LunID)) == 0) { |
7c832835 | 2803 | FOUND = 1; |
1da177e4 LT |
2804 | break; |
2805 | } | |
2806 | } | |
2807 | ||
7c832835 BH |
2808 | if (!FOUND) |
2809 | return 1; | |
1da177e4 | 2810 | |
7c832835 BH |
2811 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2812 | if (inq_buff == NULL) { | |
2813 | printk(KERN_WARNING "cciss: out of memory\n"); | |
7c832835 BH |
2814 | return 1; |
2815 | } | |
00988a35 MMOD |
2816 | if (h->cciss_read == CCISS_READ_10) { |
2817 | cciss_read_capacity(h->ctlr, logvol, 1, | |
2818 | &total_size, &block_size); | |
2819 | } else { | |
2820 | cciss_read_capacity_16(h->ctlr, logvol, 1, | |
2821 | &total_size, &block_size); | |
2822 | } | |
7c832835 BH |
2823 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, |
2824 | inq_buff, drv); | |
1da177e4 | 2825 | |
e1defc4f | 2826 | blk_queue_logical_block_size(drv->queue, drv->block_size); |
1da177e4 LT |
2827 | set_capacity(disk, drv->nr_blocks); |
2828 | ||
1da177e4 LT |
2829 | kfree(inq_buff); |
2830 | return 0; | |
2831 | } | |
2832 | ||
2833 | /* | |
2834 | * Wait polling for a command to complete. | |
2835 | * The memory mapped FIFO is polled for the completion. | |
2836 | * Used only at init time, interrupts from the HBA are disabled. | |
2837 | */ | |
2838 | static unsigned long pollcomplete(int ctlr) | |
2839 | { | |
2840 | unsigned long done; | |
2841 | int i; | |
2842 | ||
2843 | /* Wait (up to 20 seconds) for a command to complete */ | |
2844 | ||
2845 | for (i = 20 * HZ; i > 0; i--) { | |
2846 | done = hba[ctlr]->access.command_completed(hba[ctlr]); | |
86e84862 NA |
2847 | if (done == FIFO_EMPTY) |
2848 | schedule_timeout_uninterruptible(1); | |
2849 | else | |
e2019b58 | 2850 | return done; |
1da177e4 LT |
2851 | } |
2852 | /* Invalid address to tell caller we ran out of time */ | |
2853 | return 1; | |
2854 | } | |
3da8b713 | 2855 | |
4a4b2d76 SC |
2856 | /* Send command c to controller h and poll for it to complete. |
2857 | * Turns interrupts off on the board. Used at driver init time | |
2858 | * and during SCSI error recovery. | |
1da177e4 | 2859 | */ |
4a4b2d76 | 2860 | static int sendcmd_core(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 | 2861 | { |
1da177e4 LT |
2862 | int i; |
2863 | unsigned long complete; | |
4a4b2d76 | 2864 | int status = IO_ERROR; |
1da177e4 | 2865 | u64bit buff_dma_handle; |
1da177e4 | 2866 | |
4a4b2d76 SC |
2867 | resend_cmd1: |
2868 | ||
2869 | /* Disable interrupt on the board. */ | |
2870 | h->access.set_intr_mask(h, CCISS_INTR_OFF); | |
7c832835 | 2871 | |
1da177e4 | 2872 | /* Make sure there is room in the command FIFO */ |
7c832835 | 2873 | /* Actually it should be completely empty at this time */ |
3da8b713 | 2874 | /* unless we are in here doing error handling for the scsi */ |
2875 | /* tape side of the driver. */ | |
7c832835 | 2876 | for (i = 200000; i > 0; i--) { |
1da177e4 | 2877 | /* if fifo isn't full go */ |
4a4b2d76 | 2878 | if (!(h->access.fifo_full(h))) |
7c832835 | 2879 | break; |
7c832835 BH |
2880 | udelay(10); |
2881 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," | |
4a4b2d76 | 2882 | " waiting!\n", h->ctlr); |
7c832835 | 2883 | } |
4a4b2d76 | 2884 | h->access.submit_command(h, c); /* Send the cmd */ |
3da8b713 | 2885 | do { |
4a4b2d76 | 2886 | complete = pollcomplete(h->ctlr); |
1da177e4 LT |
2887 | |
2888 | #ifdef CCISS_DEBUG | |
3da8b713 | 2889 | printk(KERN_DEBUG "cciss: command completed\n"); |
7c832835 | 2890 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2891 | |
3da8b713 | 2892 | if (complete == 1) { |
7c832835 BH |
2893 | printk(KERN_WARNING |
2894 | "cciss cciss%d: SendCmd Timeout out, " | |
4a4b2d76 | 2895 | "No command list address returned!\n", h->ctlr); |
3da8b713 | 2896 | status = IO_ERROR; |
3da8b713 | 2897 | break; |
2898 | } | |
2899 | ||
72f9f132 | 2900 | /* Make sure it's the command we're expecting. */ |
4a4b2d76 | 2901 | if ((complete & ~CISS_ERROR_BIT) != c->busaddr) { |
72f9f132 | 2902 | printk(KERN_WARNING "cciss%d: Unexpected command " |
2903 | "completion.\n", h->ctlr); | |
4a4b2d76 SC |
2904 | continue; |
2905 | } | |
2906 | ||
2907 | /* It is our command. If no error, we're done. */ | |
2908 | if (!(complete & CISS_ERROR_BIT)) { | |
2909 | status = IO_OK; | |
2910 | break; | |
2911 | } | |
2912 | ||
2913 | /* There is an error... */ | |
2914 | ||
2915 | /* if data overrun or underun on Report command ignore it */ | |
2916 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || | |
2917 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || | |
2918 | (c->Request.CDB[0] == CISS_INQUIRY)) && | |
2919 | ((c->err_info->CommandStatus == CMD_DATA_OVERRUN) || | |
2920 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN))) { | |
2921 | complete = c->busaddr; | |
2922 | status = IO_OK; | |
2923 | break; | |
1da177e4 | 2924 | } |
4a4b2d76 SC |
2925 | |
2926 | if (c->err_info->CommandStatus == CMD_UNSOLICITED_ABORT) { | |
2927 | printk(KERN_WARNING "cciss%d: unsolicited abort %p\n", | |
2928 | h->ctlr, c); | |
2929 | if (c->retry_count < MAX_CMD_RETRIES) { | |
2930 | printk(KERN_WARNING "cciss%d: retrying %p\n", | |
2931 | h->ctlr, c); | |
2932 | c->retry_count++; | |
2933 | /* erase the old error information */ | |
2934 | memset(c->err_info, 0, sizeof(c->err_info)); | |
2935 | goto resend_cmd1; | |
3da8b713 | 2936 | } |
4a4b2d76 SC |
2937 | printk(KERN_WARNING "cciss%d: retried %p too many " |
2938 | "times\n", h->ctlr, c); | |
2939 | status = IO_ERROR; | |
3c2ab402 | 2940 | break; |
4a4b2d76 SC |
2941 | } |
2942 | ||
2943 | if (c->err_info->CommandStatus == CMD_UNABORTABLE) { | |
2944 | printk(KERN_WARNING "cciss%d: command could not be " | |
2945 | "aborted.\n", h->ctlr); | |
2946 | status = IO_ERROR; | |
3c2ab402 | 2947 | break; |
4a4b2d76 SC |
2948 | } |
2949 | ||
4a4b2d76 | 2950 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS) { |
3c2ab402 | 2951 | status = check_target_status(h, c); |
2952 | break; | |
4a4b2d76 SC |
2953 | } |
2954 | ||
3c2ab402 | 2955 | printk(KERN_WARNING "cciss%d: sendcmd error\n", h->ctlr); |
2956 | printk(KERN_WARNING "cmd = 0x%02x, CommandStatus = 0x%02x\n", | |
2957 | c->Request.CDB[0], c->err_info->CommandStatus); | |
4a4b2d76 | 2958 | status = IO_ERROR; |
3c2ab402 | 2959 | break; |
4a4b2d76 SC |
2960 | |
2961 | } while (1); | |
7c832835 | 2962 | |
1da177e4 | 2963 | /* unlock the data buffer from DMA */ |
bb2a37bf MM |
2964 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2965 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
4a4b2d76 | 2966 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
7c832835 | 2967 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
4a4b2d76 SC |
2968 | return status; |
2969 | } | |
2970 | ||
2971 | /* | |
2972 | * Send a command to the controller, and wait for it to complete. | |
2973 | * Used at init time, and during SCSI error recovery. | |
2974 | */ | |
2975 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, | |
4a4b2d76 SC |
2976 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) |
2977 | { | |
2978 | CommandList_struct *c; | |
2979 | int status; | |
2980 | ||
2981 | c = cmd_alloc(hba[ctlr], 1); | |
2982 | if (!c) { | |
2983 | printk(KERN_WARNING "cciss: unable to get memory"); | |
2984 | return IO_ERROR; | |
2985 | } | |
b57695fe | 2986 | status = fill_cmd(c, cmd, ctlr, buff, size, page_code, |
2987 | scsi3addr, cmd_type); | |
4a4b2d76 SC |
2988 | if (status == IO_OK) |
2989 | status = sendcmd_core(hba[ctlr], c); | |
2990 | cmd_free(hba[ctlr], c, 1); | |
e2019b58 | 2991 | return status; |
7c832835 BH |
2992 | } |
2993 | ||
1da177e4 LT |
2994 | /* |
2995 | * Map (physical) PCI mem into (virtual) kernel space | |
2996 | */ | |
2997 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2998 | { | |
7c832835 BH |
2999 | ulong page_base = ((ulong) base) & PAGE_MASK; |
3000 | ulong page_offs = ((ulong) base) - page_base; | |
3001 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 3002 | |
7c832835 | 3003 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
3004 | } |
3005 | ||
7c832835 BH |
3006 | /* |
3007 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
3008 | * the Q to wait for completion. | |
3009 | */ | |
3010 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
3011 | { |
3012 | CommandList_struct *c; | |
7c832835 | 3013 | |
8a3173de JA |
3014 | while (!hlist_empty(&h->reqQ)) { |
3015 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); | |
1da177e4 LT |
3016 | /* can't do anything if fifo is full */ |
3017 | if ((h->access.fifo_full(h))) { | |
3018 | printk(KERN_WARNING "cciss: fifo full\n"); | |
3019 | break; | |
3020 | } | |
3021 | ||
7c832835 | 3022 | /* Get the first entry from the Request Q */ |
8a3173de | 3023 | removeQ(c); |
1da177e4 | 3024 | h->Qdepth--; |
7c832835 BH |
3025 | |
3026 | /* Tell the controller execute command */ | |
1da177e4 | 3027 | h->access.submit_command(h, c); |
7c832835 BH |
3028 | |
3029 | /* Put job onto the completed Q */ | |
8a3173de | 3030 | addQ(&h->cmpQ, c); |
1da177e4 LT |
3031 | } |
3032 | } | |
7c832835 | 3033 | |
1da177e4 LT |
3034 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
3035 | /* Zeros out the error record and then resends the command back */ | |
3036 | /* to the controller */ | |
7c832835 | 3037 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
3038 | { |
3039 | /* erase the old error information */ | |
3040 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
3041 | ||
3042 | /* add it to software queue and then send it to the controller */ | |
8a3173de | 3043 | addQ(&h->reqQ, c); |
1da177e4 | 3044 | h->Qdepth++; |
7c832835 | 3045 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
3046 | h->maxQsinceinit = h->Qdepth; |
3047 | ||
3048 | start_io(h); | |
3049 | } | |
a9925a06 | 3050 | |
1a614f50 SC |
3051 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
3052 | unsigned int msg_byte, unsigned int host_byte, | |
3053 | unsigned int driver_byte) | |
3054 | { | |
3055 | /* inverse of macros in scsi.h */ | |
3056 | return (scsi_status_byte & 0xff) | | |
3057 | ((msg_byte & 0xff) << 8) | | |
3058 | ((host_byte & 0xff) << 16) | | |
3059 | ((driver_byte & 0xff) << 24); | |
3060 | } | |
3061 | ||
0a9279cc MM |
3062 | static inline int evaluate_target_status(ctlr_info_t *h, |
3063 | CommandList_struct *cmd, int *retry_cmd) | |
03bbfee5 MMOD |
3064 | { |
3065 | unsigned char sense_key; | |
1a614f50 SC |
3066 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
3067 | int error_value; | |
3068 | ||
0a9279cc | 3069 | *retry_cmd = 0; |
1a614f50 SC |
3070 | /* If we get in here, it means we got "target status", that is, scsi status */ |
3071 | status_byte = cmd->err_info->ScsiStatus; | |
3072 | driver_byte = DRIVER_OK; | |
3073 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ | |
3074 | ||
3075 | if (blk_pc_request(cmd->rq)) | |
3076 | host_byte = DID_PASSTHROUGH; | |
3077 | else | |
3078 | host_byte = DID_OK; | |
3079 | ||
3080 | error_value = make_status_bytes(status_byte, msg_byte, | |
3081 | host_byte, driver_byte); | |
03bbfee5 | 3082 | |
1a614f50 | 3083 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
03bbfee5 MMOD |
3084 | if (!blk_pc_request(cmd->rq)) |
3085 | printk(KERN_WARNING "cciss: cmd %p " | |
3086 | "has SCSI Status 0x%x\n", | |
3087 | cmd, cmd->err_info->ScsiStatus); | |
1a614f50 | 3088 | return error_value; |
03bbfee5 MMOD |
3089 | } |
3090 | ||
3091 | /* check the sense key */ | |
3092 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
3093 | /* no status or recovered error */ | |
1a614f50 SC |
3094 | if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq)) |
3095 | error_value = 0; | |
03bbfee5 | 3096 | |
0a9279cc MM |
3097 | if (check_for_unit_attention(h, cmd)) { |
3098 | *retry_cmd = !blk_pc_request(cmd->rq); | |
3099 | return 0; | |
3100 | } | |
3101 | ||
03bbfee5 | 3102 | if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */ |
1a614f50 | 3103 | if (error_value != 0) |
03bbfee5 MMOD |
3104 | printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" |
3105 | " sense key = 0x%x\n", cmd, sense_key); | |
1a614f50 | 3106 | return error_value; |
03bbfee5 MMOD |
3107 | } |
3108 | ||
3109 | /* SG_IO or similar, copy sense data back */ | |
3110 | if (cmd->rq->sense) { | |
3111 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) | |
3112 | cmd->rq->sense_len = cmd->err_info->SenseLen; | |
3113 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, | |
3114 | cmd->rq->sense_len); | |
3115 | } else | |
3116 | cmd->rq->sense_len = 0; | |
3117 | ||
1a614f50 | 3118 | return error_value; |
03bbfee5 MMOD |
3119 | } |
3120 | ||
7c832835 | 3121 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
3122 | * buffers for the completed job. Note that this function does not need |
3123 | * to hold the hba/queue lock. | |
7c832835 BH |
3124 | */ |
3125 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
3126 | int timeout) | |
1da177e4 | 3127 | { |
1da177e4 | 3128 | int retry_cmd = 0; |
198b7660 MMOD |
3129 | struct request *rq = cmd->rq; |
3130 | ||
3131 | rq->errors = 0; | |
7c832835 | 3132 | |
1da177e4 | 3133 | if (timeout) |
1a614f50 | 3134 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
1da177e4 | 3135 | |
d38ae168 MMOD |
3136 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
3137 | goto after_error_processing; | |
7c832835 | 3138 | |
d38ae168 | 3139 | switch (cmd->err_info->CommandStatus) { |
d38ae168 | 3140 | case CMD_TARGET_STATUS: |
0a9279cc | 3141 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
d38ae168 MMOD |
3142 | break; |
3143 | case CMD_DATA_UNDERRUN: | |
03bbfee5 MMOD |
3144 | if (blk_fs_request(cmd->rq)) { |
3145 | printk(KERN_WARNING "cciss: cmd %p has" | |
3146 | " completed with data underrun " | |
3147 | "reported\n", cmd); | |
c3a4d78c | 3148 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
03bbfee5 | 3149 | } |
d38ae168 MMOD |
3150 | break; |
3151 | case CMD_DATA_OVERRUN: | |
03bbfee5 MMOD |
3152 | if (blk_fs_request(cmd->rq)) |
3153 | printk(KERN_WARNING "cciss: cmd %p has" | |
3154 | " completed with data overrun " | |
3155 | "reported\n", cmd); | |
d38ae168 MMOD |
3156 | break; |
3157 | case CMD_INVALID: | |
3158 | printk(KERN_WARNING "cciss: cmd %p is " | |
3159 | "reported invalid\n", cmd); | |
1a614f50 SC |
3160 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3161 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3162 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3163 | break; |
3164 | case CMD_PROTOCOL_ERR: | |
3165 | printk(KERN_WARNING "cciss: cmd %p has " | |
3166 | "protocol error \n", cmd); | |
1a614f50 SC |
3167 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3168 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3169 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3170 | break; |
3171 | case CMD_HARDWARE_ERR: | |
3172 | printk(KERN_WARNING "cciss: cmd %p had " | |
3173 | " hardware error\n", cmd); | |
1a614f50 SC |
3174 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3175 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3176 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3177 | break; |
3178 | case CMD_CONNECTION_LOST: | |
3179 | printk(KERN_WARNING "cciss: cmd %p had " | |
3180 | "connection lost\n", cmd); | |
1a614f50 SC |
3181 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3182 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3183 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3184 | break; |
3185 | case CMD_ABORTED: | |
3186 | printk(KERN_WARNING "cciss: cmd %p was " | |
3187 | "aborted\n", cmd); | |
1a614f50 SC |
3188 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3189 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3190 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
3191 | break; |
3192 | case CMD_ABORT_FAILED: | |
3193 | printk(KERN_WARNING "cciss: cmd %p reports " | |
3194 | "abort failed\n", cmd); | |
1a614f50 SC |
3195 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3196 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3197 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3198 | break; |
3199 | case CMD_UNSOLICITED_ABORT: | |
3200 | printk(KERN_WARNING "cciss%d: unsolicited " | |
3201 | "abort %p\n", h->ctlr, cmd); | |
3202 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
3203 | retry_cmd = 1; | |
3204 | printk(KERN_WARNING | |
3205 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
3206 | cmd->retry_count++; | |
3207 | } else | |
3208 | printk(KERN_WARNING | |
3209 | "cciss%d: %p retried too " | |
3210 | "many times\n", h->ctlr, cmd); | |
1a614f50 SC |
3211 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3212 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3213 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
3214 | break; |
3215 | case CMD_TIMEOUT: | |
3216 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
1a614f50 SC |
3217 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3218 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3219 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3220 | break; |
3221 | default: | |
3222 | printk(KERN_WARNING "cciss: cmd %p returned " | |
3223 | "unknown status %x\n", cmd, | |
3224 | cmd->err_info->CommandStatus); | |
1a614f50 SC |
3225 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3226 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3227 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
1da177e4 | 3228 | } |
d38ae168 MMOD |
3229 | |
3230 | after_error_processing: | |
3231 | ||
1da177e4 | 3232 | /* We need to return this command */ |
7c832835 BH |
3233 | if (retry_cmd) { |
3234 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 3235 | return; |
7c832835 | 3236 | } |
03bbfee5 | 3237 | cmd->rq->completion_data = cmd; |
a9925a06 | 3238 | blk_complete_request(cmd->rq); |
1da177e4 LT |
3239 | } |
3240 | ||
7c832835 BH |
3241 | /* |
3242 | * Get a request and submit it to the controller. | |
1da177e4 | 3243 | */ |
165125e1 | 3244 | static void do_cciss_request(struct request_queue *q) |
1da177e4 | 3245 | { |
7c832835 | 3246 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 3247 | CommandList_struct *c; |
00988a35 MMOD |
3248 | sector_t start_blk; |
3249 | int seg; | |
1da177e4 LT |
3250 | struct request *creq; |
3251 | u64bit temp64; | |
3252 | struct scatterlist tmp_sg[MAXSGENTRIES]; | |
3253 | drive_info_struct *drv; | |
3254 | int i, dir; | |
3255 | ||
3256 | /* We call start_io here in case there is a command waiting on the | |
3257 | * queue that has not been sent. | |
7c832835 | 3258 | */ |
1da177e4 LT |
3259 | if (blk_queue_plugged(q)) |
3260 | goto startio; | |
3261 | ||
7c832835 | 3262 | queue: |
9934c8c0 | 3263 | creq = blk_peek_request(q); |
1da177e4 LT |
3264 | if (!creq) |
3265 | goto startio; | |
3266 | ||
089fe1b2 | 3267 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
1da177e4 | 3268 | |
7c832835 | 3269 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
3270 | goto full; |
3271 | ||
9934c8c0 | 3272 | blk_start_request(creq); |
1da177e4 LT |
3273 | |
3274 | spin_unlock_irq(q->queue_lock); | |
3275 | ||
3276 | c->cmd_type = CMD_RWREQ; | |
3277 | c->rq = creq; | |
7c832835 BH |
3278 | |
3279 | /* fill in the request */ | |
1da177e4 | 3280 | drv = creq->rq_disk->private_data; |
7c832835 | 3281 | c->Header.ReplyQueue = 0; // unused in simple mode |
33079b21 MM |
3282 | /* got command from pool, so use the command block index instead */ |
3283 | /* for direct lookups. */ | |
3284 | /* The first 2 bits are reserved for controller error reporting. */ | |
3285 | c->Header.Tag.lower = (c->cmdindex << 3); | |
7c832835 | 3286 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
39ccf9a6 | 3287 | memcpy(&c->Header.LUN, drv->LunID, sizeof(drv->LunID)); |
7c832835 BH |
3288 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
3289 | c->Request.Type.Type = TYPE_CMD; // It is a command. | |
3290 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
3291 | c->Request.Type.Direction = | |
a52de245 | 3292 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
7c832835 BH |
3293 | c->Request.Timeout = 0; // Don't time out |
3294 | c->Request.CDB[0] = | |
00988a35 | 3295 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
83096ebf | 3296 | start_blk = blk_rq_pos(creq); |
1da177e4 | 3297 | #ifdef CCISS_DEBUG |
83096ebf TH |
3298 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", |
3299 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); | |
7c832835 | 3300 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3301 | |
45711f1a | 3302 | sg_init_table(tmp_sg, MAXSGENTRIES); |
1da177e4 LT |
3303 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
3304 | ||
7c832835 | 3305 | /* get the DMA records for the setup */ |
1da177e4 LT |
3306 | if (c->Request.Type.Direction == XFER_READ) |
3307 | dir = PCI_DMA_FROMDEVICE; | |
3308 | else | |
3309 | dir = PCI_DMA_TODEVICE; | |
3310 | ||
7c832835 | 3311 | for (i = 0; i < seg; i++) { |
1da177e4 | 3312 | c->SG[i].Len = tmp_sg[i].length; |
45711f1a | 3313 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
7c832835 BH |
3314 | tmp_sg[i].offset, |
3315 | tmp_sg[i].length, dir); | |
1da177e4 | 3316 | c->SG[i].Addr.lower = temp64.val32.lower; |
7c832835 BH |
3317 | c->SG[i].Addr.upper = temp64.val32.upper; |
3318 | c->SG[i].Ext = 0; // we are not chaining | |
1da177e4 | 3319 | } |
7c832835 BH |
3320 | /* track how many SG entries we are using */ |
3321 | if (seg > h->maxSG) | |
3322 | h->maxSG = seg; | |
1da177e4 LT |
3323 | |
3324 | #ifdef CCISS_DEBUG | |
83096ebf TH |
3325 | printk(KERN_DEBUG "cciss: Submitting %u sectors in %d segments\n", |
3326 | blk_rq_sectors(creq), seg); | |
7c832835 | 3327 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
3328 | |
3329 | c->Header.SGList = c->Header.SGTotal = seg; | |
03bbfee5 MMOD |
3330 | if (likely(blk_fs_request(creq))) { |
3331 | if(h->cciss_read == CCISS_READ_10) { | |
3332 | c->Request.CDB[1] = 0; | |
3333 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB | |
3334 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; | |
3335 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
3336 | c->Request.CDB[5] = start_blk & 0xff; | |
3337 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB | |
83096ebf TH |
3338 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
3339 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3340 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
3341 | } else { | |
582539e5 RD |
3342 | u32 upper32 = upper_32_bits(start_blk); |
3343 | ||
03bbfee5 MMOD |
3344 | c->Request.CDBLen = 16; |
3345 | c->Request.CDB[1]= 0; | |
582539e5 RD |
3346 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; //MSB |
3347 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; | |
3348 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; | |
3349 | c->Request.CDB[5]= upper32 & 0xff; | |
03bbfee5 MMOD |
3350 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
3351 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
3352 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
3353 | c->Request.CDB[9]= start_blk & 0xff; | |
83096ebf TH |
3354 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
3355 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; | |
3356 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; | |
3357 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3358 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
3359 | } | |
3360 | } else if (blk_pc_request(creq)) { | |
3361 | c->Request.CDBLen = creq->cmd_len; | |
3362 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); | |
00988a35 | 3363 | } else { |
03bbfee5 MMOD |
3364 | printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); |
3365 | BUG(); | |
00988a35 | 3366 | } |
1da177e4 LT |
3367 | |
3368 | spin_lock_irq(q->queue_lock); | |
3369 | ||
8a3173de | 3370 | addQ(&h->reqQ, c); |
1da177e4 | 3371 | h->Qdepth++; |
7c832835 BH |
3372 | if (h->Qdepth > h->maxQsinceinit) |
3373 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
3374 | |
3375 | goto queue; | |
00988a35 | 3376 | full: |
1da177e4 | 3377 | blk_stop_queue(q); |
00988a35 | 3378 | startio: |
1da177e4 LT |
3379 | /* We will already have the driver lock here so not need |
3380 | * to lock it. | |
7c832835 | 3381 | */ |
1da177e4 LT |
3382 | start_io(h); |
3383 | } | |
3384 | ||
3da8b713 | 3385 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
3386 | { | |
3da8b713 | 3387 | return h->access.command_completed(h); |
3da8b713 | 3388 | } |
3389 | ||
3390 | static inline int interrupt_pending(ctlr_info_t *h) | |
3391 | { | |
3da8b713 | 3392 | return h->access.intr_pending(h); |
3da8b713 | 3393 | } |
3394 | ||
3395 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
3396 | { | |
7c832835 | 3397 | return (((h->access.intr_pending(h) == 0) || |
3da8b713 | 3398 | (h->interrupts_enabled == 0))); |
3da8b713 | 3399 | } |
3400 | ||
7d12e780 | 3401 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
1da177e4 LT |
3402 | { |
3403 | ctlr_info_t *h = dev_id; | |
3404 | CommandList_struct *c; | |
3405 | unsigned long flags; | |
33079b21 | 3406 | __u32 a, a1, a2; |
1da177e4 | 3407 | |
3da8b713 | 3408 | if (interrupt_not_for_us(h)) |
1da177e4 | 3409 | return IRQ_NONE; |
1da177e4 LT |
3410 | /* |
3411 | * If there are completed commands in the completion queue, | |
3412 | * we had better do something about it. | |
3413 | */ | |
3414 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 3415 | while (interrupt_pending(h)) { |
7c832835 | 3416 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
1da177e4 | 3417 | a1 = a; |
33079b21 MM |
3418 | if ((a & 0x04)) { |
3419 | a2 = (a >> 3); | |
f880632f | 3420 | if (a2 >= h->nr_cmds) { |
7c832835 BH |
3421 | printk(KERN_WARNING |
3422 | "cciss: controller cciss%d failed, stopping.\n", | |
3423 | h->ctlr); | |
33079b21 MM |
3424 | fail_all_cmds(h->ctlr); |
3425 | return IRQ_HANDLED; | |
3426 | } | |
3427 | ||
3428 | c = h->cmd_pool + a2; | |
3429 | a = c->busaddr; | |
3430 | ||
3431 | } else { | |
8a3173de JA |
3432 | struct hlist_node *tmp; |
3433 | ||
7c832835 | 3434 | a &= ~3; |
8a3173de JA |
3435 | c = NULL; |
3436 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { | |
3437 | if (c->busaddr == a) | |
7c832835 BH |
3438 | break; |
3439 | } | |
33079b21 | 3440 | } |
1da177e4 LT |
3441 | /* |
3442 | * If we've found the command, take it off the | |
3443 | * completion Q and free it | |
3444 | */ | |
8a3173de JA |
3445 | if (c && c->busaddr == a) { |
3446 | removeQ(c); | |
1da177e4 LT |
3447 | if (c->cmd_type == CMD_RWREQ) { |
3448 | complete_command(h, c, 0); | |
3449 | } else if (c->cmd_type == CMD_IOCTL_PEND) { | |
3450 | complete(c->waiting); | |
3451 | } | |
3452 | # ifdef CONFIG_CISS_SCSI_TAPE | |
3453 | else if (c->cmd_type == CMD_SCSI) | |
3454 | complete_scsi_command(c, 0, a1); | |
3455 | # endif | |
3456 | continue; | |
3457 | } | |
3458 | } | |
3459 | } | |
3460 | ||
1da177e4 LT |
3461 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
3462 | return IRQ_HANDLED; | |
3463 | } | |
7c832835 | 3464 | |
b368c9dd AP |
3465 | /** |
3466 | * add_to_scan_list() - add controller to rescan queue | |
3467 | * @h: Pointer to the controller. | |
3468 | * | |
3469 | * Adds the controller to the rescan queue if not already on the queue. | |
3470 | * | |
3471 | * returns 1 if added to the queue, 0 if skipped (could be on the | |
3472 | * queue already, or the controller could be initializing or shutting | |
3473 | * down). | |
3474 | **/ | |
3475 | static int add_to_scan_list(struct ctlr_info *h) | |
3476 | { | |
3477 | struct ctlr_info *test_h; | |
3478 | int found = 0; | |
3479 | int ret = 0; | |
3480 | ||
3481 | if (h->busy_initializing) | |
3482 | return 0; | |
3483 | ||
3484 | if (!mutex_trylock(&h->busy_shutting_down)) | |
3485 | return 0; | |
3486 | ||
3487 | mutex_lock(&scan_mutex); | |
3488 | list_for_each_entry(test_h, &scan_q, scan_list) { | |
3489 | if (test_h == h) { | |
3490 | found = 1; | |
3491 | break; | |
3492 | } | |
3493 | } | |
3494 | if (!found && !h->busy_scanning) { | |
3495 | INIT_COMPLETION(h->scan_wait); | |
3496 | list_add_tail(&h->scan_list, &scan_q); | |
3497 | ret = 1; | |
3498 | } | |
3499 | mutex_unlock(&scan_mutex); | |
3500 | mutex_unlock(&h->busy_shutting_down); | |
3501 | ||
3502 | return ret; | |
3503 | } | |
3504 | ||
3505 | /** | |
3506 | * remove_from_scan_list() - remove controller from rescan queue | |
3507 | * @h: Pointer to the controller. | |
3508 | * | |
3509 | * Removes the controller from the rescan queue if present. Blocks if | |
3510 | * the controller is currently conducting a rescan. | |
3511 | **/ | |
3512 | static void remove_from_scan_list(struct ctlr_info *h) | |
3513 | { | |
3514 | struct ctlr_info *test_h, *tmp_h; | |
3515 | int scanning = 0; | |
3516 | ||
3517 | mutex_lock(&scan_mutex); | |
3518 | list_for_each_entry_safe(test_h, tmp_h, &scan_q, scan_list) { | |
3519 | if (test_h == h) { | |
3520 | list_del(&h->scan_list); | |
3521 | complete_all(&h->scan_wait); | |
3522 | mutex_unlock(&scan_mutex); | |
3523 | return; | |
3524 | } | |
3525 | } | |
3526 | if (&h->busy_scanning) | |
3527 | scanning = 0; | |
3528 | mutex_unlock(&scan_mutex); | |
3529 | ||
3530 | if (scanning) | |
3531 | wait_for_completion(&h->scan_wait); | |
3532 | } | |
3533 | ||
3534 | /** | |
3535 | * scan_thread() - kernel thread used to rescan controllers | |
3536 | * @data: Ignored. | |
3537 | * | |
3538 | * A kernel thread used scan for drive topology changes on | |
3539 | * controllers. The thread processes only one controller at a time | |
3540 | * using a queue. Controllers are added to the queue using | |
3541 | * add_to_scan_list() and removed from the queue either after done | |
3542 | * processing or using remove_from_scan_list(). | |
3543 | * | |
3544 | * returns 0. | |
3545 | **/ | |
0a9279cc MM |
3546 | static int scan_thread(void *data) |
3547 | { | |
b368c9dd | 3548 | struct ctlr_info *h; |
0a9279cc | 3549 | |
b368c9dd AP |
3550 | while (1) { |
3551 | set_current_state(TASK_INTERRUPTIBLE); | |
3552 | schedule(); | |
0a9279cc MM |
3553 | if (kthread_should_stop()) |
3554 | break; | |
b368c9dd AP |
3555 | |
3556 | while (1) { | |
3557 | mutex_lock(&scan_mutex); | |
3558 | if (list_empty(&scan_q)) { | |
3559 | mutex_unlock(&scan_mutex); | |
3560 | break; | |
3561 | } | |
3562 | ||
3563 | h = list_entry(scan_q.next, | |
3564 | struct ctlr_info, | |
3565 | scan_list); | |
3566 | list_del(&h->scan_list); | |
3567 | h->busy_scanning = 1; | |
3568 | mutex_unlock(&scan_mutex); | |
3569 | ||
3570 | if (h) { | |
2d11d993 | 3571 | rebuild_lun_table(h, 0, 0); |
b368c9dd AP |
3572 | complete_all(&h->scan_wait); |
3573 | mutex_lock(&scan_mutex); | |
3574 | h->busy_scanning = 0; | |
3575 | mutex_unlock(&scan_mutex); | |
3576 | } | |
3577 | } | |
0a9279cc | 3578 | } |
b368c9dd | 3579 | |
0a9279cc MM |
3580 | return 0; |
3581 | } | |
3582 | ||
3583 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) | |
3584 | { | |
3585 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) | |
3586 | return 0; | |
3587 | ||
3588 | switch (c->err_info->SenseInfo[12]) { | |
3589 | case STATE_CHANGED: | |
3590 | printk(KERN_WARNING "cciss%d: a state change " | |
3591 | "detected, command retried\n", h->ctlr); | |
3592 | return 1; | |
3593 | break; | |
3594 | case LUN_FAILED: | |
3595 | printk(KERN_WARNING "cciss%d: LUN failure " | |
3596 | "detected, action required\n", h->ctlr); | |
3597 | return 1; | |
3598 | break; | |
3599 | case REPORT_LUNS_CHANGED: | |
3600 | printk(KERN_WARNING "cciss%d: report LUN data " | |
3601 | "changed\n", h->ctlr); | |
b368c9dd AP |
3602 | add_to_scan_list(h); |
3603 | wake_up_process(cciss_scan_thread); | |
0a9279cc MM |
3604 | return 1; |
3605 | break; | |
3606 | case POWER_OR_RESET: | |
3607 | printk(KERN_WARNING "cciss%d: a power on " | |
3608 | "or device reset detected\n", h->ctlr); | |
3609 | return 1; | |
3610 | break; | |
3611 | case UNIT_ATTENTION_CLEARED: | |
3612 | printk(KERN_WARNING "cciss%d: unit attention " | |
3613 | "cleared by another initiator\n", h->ctlr); | |
3614 | return 1; | |
3615 | break; | |
3616 | default: | |
3617 | printk(KERN_WARNING "cciss%d: unknown " | |
3618 | "unit attention detected\n", h->ctlr); | |
3619 | return 1; | |
3620 | } | |
3621 | } | |
3622 | ||
7c832835 | 3623 | /* |
d14c4ab5 | 3624 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 3625 | * the io functions. |
7c832835 | 3626 | * This is for debug only. |
1da177e4 LT |
3627 | */ |
3628 | #ifdef CCISS_DEBUG | |
7c832835 | 3629 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 LT |
3630 | { |
3631 | int i; | |
3632 | char temp_name[17]; | |
3633 | ||
3634 | printk("Controller Configuration information\n"); | |
3635 | printk("------------------------------------\n"); | |
7c832835 | 3636 | for (i = 0; i < 4; i++) |
1da177e4 | 3637 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
3638 | temp_name[4] = '\0'; |
3639 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 3640 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
3641 | printk(" Transport methods supported = 0x%x\n", |
3642 | readl(&(tb->TransportSupport))); | |
3643 | printk(" Transport methods active = 0x%x\n", | |
3644 | readl(&(tb->TransportActive))); | |
3645 | printk(" Requested transport Method = 0x%x\n", | |
3646 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 3647 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 3648 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 3649 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
3650 | readl(&(tb->HostWrite.CoalIntCount))); |
3651 | printk(" Max outstanding commands = 0x%d\n", | |
3652 | readl(&(tb->CmdsOutMax))); | |
3653 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
3654 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
3655 | temp_name[i] = readb(&(tb->ServerName[i])); |
3656 | temp_name[16] = '\0'; | |
3657 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 3658 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
1da177e4 | 3659 | } |
7c832835 | 3660 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3661 | |
7c832835 | 3662 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
3663 | { |
3664 | int i, offset, mem_type, bar_type; | |
7c832835 | 3665 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
3666 | return 0; |
3667 | offset = 0; | |
7c832835 BH |
3668 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
3669 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
3670 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
3671 | offset += 4; | |
3672 | else { | |
3673 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 3674 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 3675 | switch (mem_type) { |
7c832835 BH |
3676 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
3677 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
3678 | offset += 4; /* 32 bit */ | |
3679 | break; | |
3680 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
3681 | offset += 8; | |
3682 | break; | |
3683 | default: /* reserved in PCI 2.2 */ | |
3684 | printk(KERN_WARNING | |
3685 | "Base address is invalid\n"); | |
3686 | return -1; | |
1da177e4 LT |
3687 | break; |
3688 | } | |
3689 | } | |
7c832835 BH |
3690 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
3691 | return i + 1; | |
1da177e4 LT |
3692 | } |
3693 | return -1; | |
3694 | } | |
3695 | ||
fb86a35b MM |
3696 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
3697 | * controllers that are capable. If not, we use IO-APIC mode. | |
3698 | */ | |
3699 | ||
7c832835 BH |
3700 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
3701 | struct pci_dev *pdev, __u32 board_id) | |
fb86a35b MM |
3702 | { |
3703 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3704 | int err; |
3705 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
3706 | {0, 2}, {0, 3} | |
3707 | }; | |
fb86a35b MM |
3708 | |
3709 | /* Some boards advertise MSI but don't really support it */ | |
3710 | if ((board_id == 0x40700E11) || | |
7c832835 BH |
3711 | (board_id == 0x40800E11) || |
3712 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
fb86a35b MM |
3713 | goto default_int_mode; |
3714 | ||
7c832835 BH |
3715 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
3716 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); | |
3717 | if (!err) { | |
3718 | c->intr[0] = cciss_msix_entries[0].vector; | |
3719 | c->intr[1] = cciss_msix_entries[1].vector; | |
3720 | c->intr[2] = cciss_msix_entries[2].vector; | |
3721 | c->intr[3] = cciss_msix_entries[3].vector; | |
3722 | c->msix_vector = 1; | |
3723 | return; | |
3724 | } | |
3725 | if (err > 0) { | |
3726 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
3727 | "available\n", err); | |
1ecb9c0f | 3728 | goto default_int_mode; |
7c832835 BH |
3729 | } else { |
3730 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
3731 | err); | |
1ecb9c0f | 3732 | goto default_int_mode; |
7c832835 BH |
3733 | } |
3734 | } | |
3735 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
3736 | if (!pci_enable_msi(pdev)) { | |
7c832835 | 3737 | c->msi_vector = 1; |
7c832835 BH |
3738 | } else { |
3739 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
7c832835 BH |
3740 | } |
3741 | } | |
1ecb9c0f | 3742 | default_int_mode: |
7c832835 | 3743 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 3744 | /* if we get here we're going to use the default interrupt mode */ |
7c832835 | 3745 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
fb86a35b MM |
3746 | return; |
3747 | } | |
3748 | ||
7d1fd970 | 3749 | static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
1da177e4 LT |
3750 | { |
3751 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
3752 | __u32 board_id, scratchpad = 0; | |
3753 | __u64 cfg_offset; | |
3754 | __u32 cfg_base_addr; | |
3755 | __u64 cfg_base_addr_index; | |
c33ac89b | 3756 | int i, err; |
1da177e4 LT |
3757 | |
3758 | /* check to see if controller has been disabled */ | |
3759 | /* BEFORE trying to enable it */ | |
7c832835 BH |
3760 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
3761 | if (!(command & 0x02)) { | |
3762 | printk(KERN_WARNING | |
3763 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 3764 | return -ENODEV; |
1da177e4 LT |
3765 | } |
3766 | ||
c33ac89b | 3767 | err = pci_enable_device(pdev); |
7c832835 | 3768 | if (err) { |
1da177e4 | 3769 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 3770 | return err; |
1da177e4 | 3771 | } |
1da177e4 | 3772 | |
4e570309 BH |
3773 | err = pci_request_regions(pdev, "cciss"); |
3774 | if (err) { | |
3775 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 3776 | "aborting\n"); |
872225ca | 3777 | return err; |
4e570309 BH |
3778 | } |
3779 | ||
1da177e4 LT |
3780 | subsystem_vendor_id = pdev->subsystem_vendor; |
3781 | subsystem_device_id = pdev->subsystem_device; | |
3782 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
7c832835 | 3783 | subsystem_vendor_id); |
1da177e4 | 3784 | |
1da177e4 LT |
3785 | #ifdef CCISS_DEBUG |
3786 | printk("command = %x\n", command); | |
3787 | printk("irq = %x\n", pdev->irq); | |
3788 | printk("board_id = %x\n", board_id); | |
7c832835 | 3789 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3790 | |
fb86a35b MM |
3791 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
3792 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
3793 | */ | |
3794 | cciss_interrupt_mode(c, pdev, board_id); | |
1da177e4 | 3795 | |
e1438581 MM |
3796 | /* find the memory BAR */ |
3797 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
3798 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) | |
3799 | break; | |
3800 | } | |
3801 | if (i == DEVICE_COUNT_RESOURCE) { | |
3802 | printk(KERN_WARNING "cciss: No memory BAR found\n"); | |
3803 | err = -ENODEV; | |
3804 | goto err_out_free_res; | |
3805 | } | |
3806 | ||
3807 | c->paddr = pci_resource_start(pdev, i); /* addressing mode bits | |
3808 | * already removed | |
3809 | */ | |
1da177e4 | 3810 | |
1da177e4 | 3811 | #ifdef CCISS_DEBUG |
9f92f471 | 3812 | printk("address 0 = %lx\n", c->paddr); |
7c832835 | 3813 | #endif /* CCISS_DEBUG */ |
a5b92873 | 3814 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
1da177e4 LT |
3815 | |
3816 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
3817 | * We poll for up to 120 secs, once per 100ms. */ | |
7c832835 | 3818 | for (i = 0; i < 1200; i++) { |
1da177e4 LT |
3819 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
3820 | if (scratchpad == CCISS_FIRMWARE_READY) | |
3821 | break; | |
3822 | set_current_state(TASK_INTERRUPTIBLE); | |
4d761609 | 3823 | schedule_timeout(msecs_to_jiffies(100)); /* wait 100ms */ |
1da177e4 LT |
3824 | } |
3825 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
3826 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
c33ac89b | 3827 | err = -ENODEV; |
4e570309 | 3828 | goto err_out_free_res; |
1da177e4 LT |
3829 | } |
3830 | ||
3831 | /* get the address index number */ | |
3832 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
3833 | cfg_base_addr &= (__u32) 0x0000ffff; | |
3834 | #ifdef CCISS_DEBUG | |
3835 | printk("cfg base address = %x\n", cfg_base_addr); | |
7c832835 BH |
3836 | #endif /* CCISS_DEBUG */ |
3837 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); | |
1da177e4 | 3838 | #ifdef CCISS_DEBUG |
9f92f471 RD |
3839 | printk("cfg base address index = %llx\n", |
3840 | (unsigned long long)cfg_base_addr_index); | |
7c832835 | 3841 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
3842 | if (cfg_base_addr_index == -1) { |
3843 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
c33ac89b | 3844 | err = -ENODEV; |
4e570309 | 3845 | goto err_out_free_res; |
1da177e4 LT |
3846 | } |
3847 | ||
3848 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
3849 | #ifdef CCISS_DEBUG | |
9f92f471 | 3850 | printk("cfg offset = %llx\n", (unsigned long long)cfg_offset); |
7c832835 BH |
3851 | #endif /* CCISS_DEBUG */ |
3852 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
3853 | cfg_base_addr_index) + | |
3854 | cfg_offset, sizeof(CfgTable_struct)); | |
1da177e4 LT |
3855 | c->board_id = board_id; |
3856 | ||
3857 | #ifdef CCISS_DEBUG | |
945f390f | 3858 | print_cfg_table(c->cfgtable); |
7c832835 | 3859 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3860 | |
49153998 MM |
3861 | /* Some controllers support Zero Memory Raid (ZMR). |
3862 | * When configured in ZMR mode the number of supported | |
3863 | * commands drops to 64. So instead of just setting an | |
3864 | * arbitrary value we make the driver a little smarter. | |
3865 | * We read the config table to tell us how many commands | |
3866 | * are supported on the controller then subtract 4 to | |
3867 | * leave a little room for ioctl calls. | |
3868 | */ | |
3869 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); | |
7c832835 | 3870 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
1da177e4 LT |
3871 | if (board_id == products[i].board_id) { |
3872 | c->product_name = products[i].product_name; | |
3873 | c->access = *(products[i].access); | |
49153998 | 3874 | c->nr_cmds = c->max_commands - 4; |
1da177e4 LT |
3875 | break; |
3876 | } | |
3877 | } | |
7c832835 BH |
3878 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
3879 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
3880 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
3881 | (readb(&c->cfgtable->Signature[3]) != 'S')) { | |
1da177e4 | 3882 | printk("Does not appear to be a valid CISS config table\n"); |
c33ac89b | 3883 | err = -ENODEV; |
4e570309 | 3884 | goto err_out_free_res; |
1da177e4 | 3885 | } |
4ff9a9a4 MM |
3886 | /* We didn't find the controller in our list. We know the |
3887 | * signature is valid. If it's an HP device let's try to | |
3888 | * bind to the device and fire it up. Otherwise we bail. | |
3889 | */ | |
3890 | if (i == ARRAY_SIZE(products)) { | |
3891 | if (subsystem_vendor_id == PCI_VENDOR_ID_HP) { | |
3892 | c->product_name = products[i-1].product_name; | |
3893 | c->access = *(products[i-1].access); | |
49153998 | 3894 | c->nr_cmds = c->max_commands - 4; |
4ff9a9a4 MM |
3895 | printk(KERN_WARNING "cciss: This is an unknown " |
3896 | "Smart Array controller.\n" | |
3897 | "cciss: Please update to the latest driver " | |
3898 | "available from www.hp.com.\n"); | |
3899 | } else { | |
3900 | printk(KERN_WARNING "cciss: Sorry, I don't know how" | |
3901 | " to access the Smart Array controller %08lx\n" | |
3902 | , (unsigned long)board_id); | |
3903 | err = -ENODEV; | |
3904 | goto err_out_free_res; | |
3905 | } | |
3906 | } | |
1da177e4 | 3907 | #ifdef CONFIG_X86 |
7c832835 BH |
3908 | { |
3909 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
3910 | __u32 prefetch; | |
3911 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
3912 | prefetch |= 0x100; | |
3913 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
3914 | } | |
1da177e4 LT |
3915 | #endif |
3916 | ||
8bf50f71 MMOD |
3917 | /* Disabling DMA prefetch and refetch for the P600. |
3918 | * An ASIC bug may result in accesses to invalid memory addresses. | |
3919 | * We've disabled prefetch for some time now. Testing with XEN | |
3920 | * kernels revealed a bug in the refetch if dom0 resides on a P600. | |
f92e2f5f MM |
3921 | */ |
3922 | if(board_id == 0x3225103C) { | |
3923 | __u32 dma_prefetch; | |
8bf50f71 | 3924 | __u32 dma_refetch; |
f92e2f5f MM |
3925 | dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); |
3926 | dma_prefetch |= 0x8000; | |
3927 | writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); | |
8bf50f71 MMOD |
3928 | pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch); |
3929 | dma_refetch |= 0x1; | |
3930 | pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch); | |
f92e2f5f MM |
3931 | } |
3932 | ||
1da177e4 LT |
3933 | #ifdef CCISS_DEBUG |
3934 | printk("Trying to put board into Simple mode\n"); | |
7c832835 | 3935 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3936 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
7c832835 BH |
3937 | /* Update the field, and then ring the doorbell */ |
3938 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); | |
3939 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); | |
1da177e4 LT |
3940 | |
3941 | /* under certain very rare conditions, this can take awhile. | |
3942 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3943 | * as we enter this code.) */ | |
7c832835 | 3944 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
1da177e4 LT |
3945 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
3946 | break; | |
3947 | /* delay and try again */ | |
3948 | set_current_state(TASK_INTERRUPTIBLE); | |
4d761609 | 3949 | schedule_timeout(msecs_to_jiffies(1)); |
7c832835 | 3950 | } |
1da177e4 LT |
3951 | |
3952 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3953 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
3954 | readl(c->vaddr + SA5_DOORBELL)); | |
3955 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3956 | #ifdef CCISS_DEBUG |
7c832835 BH |
3957 | print_cfg_table(c->cfgtable); |
3958 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3959 | |
7c832835 | 3960 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
1da177e4 | 3961 | printk(KERN_WARNING "cciss: unable to get board into" |
7c832835 | 3962 | " simple mode\n"); |
c33ac89b | 3963 | err = -ENODEV; |
4e570309 | 3964 | goto err_out_free_res; |
1da177e4 LT |
3965 | } |
3966 | return 0; | |
3967 | ||
5faad620 | 3968 | err_out_free_res: |
872225ca MM |
3969 | /* |
3970 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3971 | * Smart Array controllers that pci_enable_device does not undo | |
3972 | */ | |
4e570309 | 3973 | pci_release_regions(pdev); |
c33ac89b | 3974 | return err; |
1da177e4 LT |
3975 | } |
3976 | ||
6ae5ce8e MM |
3977 | /* Function to find the first free pointer into our hba[] array |
3978 | * Returns -1 if no free entries are left. | |
7c832835 | 3979 | */ |
1da177e4 LT |
3980 | static int alloc_cciss_hba(void) |
3981 | { | |
799202cb | 3982 | int i; |
1da177e4 | 3983 | |
7c832835 | 3984 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
3985 | if (!hba[i]) { |
3986 | ctlr_info_t *p; | |
f2912a12 | 3987 | |
06ff37ff | 3988 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
3989 | if (!p) |
3990 | goto Enomem; | |
1da177e4 LT |
3991 | hba[i] = p; |
3992 | return i; | |
3993 | } | |
3994 | } | |
3995 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 3996 | " of %d controllers.\n", MAX_CTLR); |
799202cb MM |
3997 | return -1; |
3998 | Enomem: | |
1da177e4 | 3999 | printk(KERN_ERR "cciss: out of memory.\n"); |
1da177e4 LT |
4000 | return -1; |
4001 | } | |
4002 | ||
2c935593 | 4003 | static void free_hba(int n) |
1da177e4 | 4004 | { |
2c935593 SC |
4005 | ctlr_info_t *h = hba[n]; |
4006 | int i; | |
1da177e4 | 4007 | |
2c935593 SC |
4008 | hba[n] = NULL; |
4009 | for (i = 0; i < h->highest_lun + 1; i++) | |
4010 | if (h->gendisk[i] != NULL) | |
4011 | put_disk(h->gendisk[i]); | |
4012 | kfree(h); | |
1da177e4 LT |
4013 | } |
4014 | ||
82eb03cf CC |
4015 | /* Send a message CDB to the firmware. */ |
4016 | static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) | |
4017 | { | |
4018 | typedef struct { | |
4019 | CommandListHeader_struct CommandHeader; | |
4020 | RequestBlock_struct Request; | |
4021 | ErrDescriptor_struct ErrorDescriptor; | |
4022 | } Command; | |
4023 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); | |
4024 | Command *cmd; | |
4025 | dma_addr_t paddr64; | |
4026 | uint32_t paddr32, tag; | |
4027 | void __iomem *vaddr; | |
4028 | int i, err; | |
4029 | ||
4030 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
4031 | if (vaddr == NULL) | |
4032 | return -ENOMEM; | |
4033 | ||
4034 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the | |
4035 | CCISS commands, so they must be allocated from the lower 4GiB of | |
4036 | memory. */ | |
e930438c | 4037 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
82eb03cf CC |
4038 | if (err) { |
4039 | iounmap(vaddr); | |
4040 | return -ENOMEM; | |
4041 | } | |
4042 | ||
4043 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); | |
4044 | if (cmd == NULL) { | |
4045 | iounmap(vaddr); | |
4046 | return -ENOMEM; | |
4047 | } | |
4048 | ||
4049 | /* This must fit, because of the 32-bit consistent DMA mask. Also, | |
4050 | although there's no guarantee, we assume that the address is at | |
4051 | least 4-byte aligned (most likely, it's page-aligned). */ | |
4052 | paddr32 = paddr64; | |
4053 | ||
4054 | cmd->CommandHeader.ReplyQueue = 0; | |
4055 | cmd->CommandHeader.SGList = 0; | |
4056 | cmd->CommandHeader.SGTotal = 0; | |
4057 | cmd->CommandHeader.Tag.lower = paddr32; | |
4058 | cmd->CommandHeader.Tag.upper = 0; | |
4059 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); | |
4060 | ||
4061 | cmd->Request.CDBLen = 16; | |
4062 | cmd->Request.Type.Type = TYPE_MSG; | |
4063 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; | |
4064 | cmd->Request.Type.Direction = XFER_NONE; | |
4065 | cmd->Request.Timeout = 0; /* Don't time out */ | |
4066 | cmd->Request.CDB[0] = opcode; | |
4067 | cmd->Request.CDB[1] = type; | |
4068 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ | |
4069 | ||
4070 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); | |
4071 | cmd->ErrorDescriptor.Addr.upper = 0; | |
4072 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); | |
4073 | ||
4074 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); | |
4075 | ||
4076 | for (i = 0; i < 10; i++) { | |
4077 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); | |
4078 | if ((tag & ~3) == paddr32) | |
4079 | break; | |
4080 | schedule_timeout_uninterruptible(HZ); | |
4081 | } | |
4082 | ||
4083 | iounmap(vaddr); | |
4084 | ||
4085 | /* we leak the DMA buffer here ... no choice since the controller could | |
4086 | still complete the command. */ | |
4087 | if (i == 10) { | |
4088 | printk(KERN_ERR "cciss: controller message %02x:%02x timed out\n", | |
4089 | opcode, type); | |
4090 | return -ETIMEDOUT; | |
4091 | } | |
4092 | ||
4093 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); | |
4094 | ||
4095 | if (tag & 2) { | |
4096 | printk(KERN_ERR "cciss: controller message %02x:%02x failed\n", | |
4097 | opcode, type); | |
4098 | return -EIO; | |
4099 | } | |
4100 | ||
4101 | printk(KERN_INFO "cciss: controller message %02x:%02x succeeded\n", | |
4102 | opcode, type); | |
4103 | return 0; | |
4104 | } | |
4105 | ||
4106 | #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0) | |
4107 | #define cciss_noop(p) cciss_message(p, 3, 0) | |
4108 | ||
4109 | static __devinit int cciss_reset_msi(struct pci_dev *pdev) | |
4110 | { | |
4111 | /* the #defines are stolen from drivers/pci/msi.h. */ | |
4112 | #define msi_control_reg(base) (base + PCI_MSI_FLAGS) | |
4113 | #define PCI_MSIX_FLAGS_ENABLE (1 << 15) | |
4114 | ||
4115 | int pos; | |
4116 | u16 control = 0; | |
4117 | ||
4118 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); | |
4119 | if (pos) { | |
4120 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
4121 | if (control & PCI_MSI_FLAGS_ENABLE) { | |
4122 | printk(KERN_INFO "cciss: resetting MSI\n"); | |
4123 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE); | |
4124 | } | |
4125 | } | |
4126 | ||
4127 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); | |
4128 | if (pos) { | |
4129 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
4130 | if (control & PCI_MSIX_FLAGS_ENABLE) { | |
4131 | printk(KERN_INFO "cciss: resetting MSI-X\n"); | |
4132 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE); | |
4133 | } | |
4134 | } | |
4135 | ||
4136 | return 0; | |
4137 | } | |
4138 | ||
4139 | /* This does a hard reset of the controller using PCI power management | |
4140 | * states. */ | |
4141 | static __devinit int cciss_hard_reset_controller(struct pci_dev *pdev) | |
4142 | { | |
4143 | u16 pmcsr, saved_config_space[32]; | |
4144 | int i, pos; | |
4145 | ||
4146 | printk(KERN_INFO "cciss: using PCI PM to reset controller\n"); | |
4147 | ||
4148 | /* This is very nearly the same thing as | |
4149 | ||
4150 | pci_save_state(pci_dev); | |
4151 | pci_set_power_state(pci_dev, PCI_D3hot); | |
4152 | pci_set_power_state(pci_dev, PCI_D0); | |
4153 | pci_restore_state(pci_dev); | |
4154 | ||
4155 | but we can't use these nice canned kernel routines on | |
4156 | kexec, because they also check the MSI/MSI-X state in PCI | |
4157 | configuration space and do the wrong thing when it is | |
4158 | set/cleared. Also, the pci_save/restore_state functions | |
4159 | violate the ordering requirements for restoring the | |
4160 | configuration space from the CCISS document (see the | |
4161 | comment below). So we roll our own .... */ | |
4162 | ||
4163 | for (i = 0; i < 32; i++) | |
4164 | pci_read_config_word(pdev, 2*i, &saved_config_space[i]); | |
4165 | ||
4166 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); | |
4167 | if (pos == 0) { | |
4168 | printk(KERN_ERR "cciss_reset_controller: PCI PM not supported\n"); | |
4169 | return -ENODEV; | |
4170 | } | |
4171 | ||
4172 | /* Quoting from the Open CISS Specification: "The Power | |
4173 | * Management Control/Status Register (CSR) controls the power | |
4174 | * state of the device. The normal operating state is D0, | |
4175 | * CSR=00h. The software off state is D3, CSR=03h. To reset | |
4176 | * the controller, place the interface device in D3 then to | |
4177 | * D0, this causes a secondary PCI reset which will reset the | |
4178 | * controller." */ | |
4179 | ||
4180 | /* enter the D3hot power management state */ | |
4181 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); | |
4182 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4183 | pmcsr |= PCI_D3hot; | |
4184 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
4185 | ||
4186 | schedule_timeout_uninterruptible(HZ >> 1); | |
4187 | ||
4188 | /* enter the D0 power management state */ | |
4189 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4190 | pmcsr |= PCI_D0; | |
4191 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
4192 | ||
4193 | schedule_timeout_uninterruptible(HZ >> 1); | |
4194 | ||
4195 | /* Restore the PCI configuration space. The Open CISS | |
4196 | * Specification says, "Restore the PCI Configuration | |
4197 | * Registers, offsets 00h through 60h. It is important to | |
4198 | * restore the command register, 16-bits at offset 04h, | |
4199 | * last. Do not restore the configuration status register, | |
4200 | * 16-bits at offset 06h." Note that the offset is 2*i. */ | |
4201 | for (i = 0; i < 32; i++) { | |
4202 | if (i == 2 || i == 3) | |
4203 | continue; | |
4204 | pci_write_config_word(pdev, 2*i, saved_config_space[i]); | |
4205 | } | |
4206 | wmb(); | |
4207 | pci_write_config_word(pdev, 4, saved_config_space[2]); | |
4208 | ||
4209 | return 0; | |
4210 | } | |
4211 | ||
1da177e4 LT |
4212 | /* |
4213 | * This is it. Find all the controllers and register them. I really hate | |
4214 | * stealing all these major device numbers. | |
4215 | * returns the number of block devices registered. | |
4216 | */ | |
4217 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 4218 | const struct pci_device_id *ent) |
1da177e4 | 4219 | { |
1da177e4 | 4220 | int i; |
799202cb | 4221 | int j = 0; |
1da177e4 | 4222 | int rc; |
22bece00 | 4223 | int dac, return_code; |
212a5026 | 4224 | InquiryData_struct *inq_buff; |
1da177e4 | 4225 | |
82eb03cf CC |
4226 | if (reset_devices) { |
4227 | /* Reset the controller with a PCI power-cycle */ | |
4228 | if (cciss_hard_reset_controller(pdev) || cciss_reset_msi(pdev)) | |
4229 | return -ENODEV; | |
4230 | ||
5e18cfd0 JA |
4231 | /* Now try to get the controller to respond to a no-op. Some |
4232 | devices (notably the HP Smart Array 5i Controller) need | |
4233 | up to 30 seconds to respond. */ | |
5e4c91c8 | 4234 | for (i=0; i<30; i++) { |
82eb03cf CC |
4235 | if (cciss_noop(pdev) == 0) |
4236 | break; | |
5e4c91c8 JA |
4237 | |
4238 | schedule_timeout_uninterruptible(HZ); | |
4239 | } | |
4240 | if (i == 30) { | |
4241 | printk(KERN_ERR "cciss: controller seems dead\n"); | |
4242 | return -EBUSY; | |
82eb03cf CC |
4243 | } |
4244 | } | |
4245 | ||
1da177e4 | 4246 | i = alloc_cciss_hba(); |
7c832835 | 4247 | if (i < 0) |
e2019b58 | 4248 | return -1; |
1f8ef380 MM |
4249 | |
4250 | hba[i]->busy_initializing = 1; | |
8a3173de JA |
4251 | INIT_HLIST_HEAD(&hba[i]->cmpQ); |
4252 | INIT_HLIST_HEAD(&hba[i]->reqQ); | |
b368c9dd | 4253 | mutex_init(&hba[i]->busy_shutting_down); |
1f8ef380 | 4254 | |
1da177e4 | 4255 | if (cciss_pci_init(hba[i], pdev) != 0) |
7fe06326 | 4256 | goto clean0; |
1da177e4 LT |
4257 | |
4258 | sprintf(hba[i]->devname, "cciss%d", i); | |
4259 | hba[i]->ctlr = i; | |
4260 | hba[i]->pdev = pdev; | |
4261 | ||
b368c9dd AP |
4262 | init_completion(&hba[i]->scan_wait); |
4263 | ||
7fe06326 AP |
4264 | if (cciss_create_hba_sysfs_entry(hba[i])) |
4265 | goto clean0; | |
4266 | ||
1da177e4 | 4267 | /* configure PCI DMA stuff */ |
6a35528a | 4268 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
40aabb58 | 4269 | dac = 1; |
284901a9 | 4270 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
40aabb58 | 4271 | dac = 0; |
1da177e4 | 4272 | else { |
40aabb58 | 4273 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
4274 | goto clean1; |
4275 | } | |
4276 | ||
4277 | /* | |
4278 | * register with the major number, or get a dynamic major number | |
4279 | * by passing 0 as argument. This is done for greater than | |
4280 | * 8 controller support. | |
4281 | */ | |
4282 | if (i < MAX_CTLR_ORIG) | |
564de74a | 4283 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 4284 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 4285 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 4286 | printk(KERN_ERR |
7c832835 BH |
4287 | "cciss: Unable to get major number %d for %s " |
4288 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 4289 | goto clean1; |
7c832835 | 4290 | } else { |
1da177e4 LT |
4291 | if (i >= MAX_CTLR_ORIG) |
4292 | hba[i]->major = rc; | |
4293 | } | |
4294 | ||
4295 | /* make sure the board interrupts are off */ | |
4296 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
7c832835 | 4297 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
69ab3912 | 4298 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
1da177e4 | 4299 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
7c832835 | 4300 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
1da177e4 LT |
4301 | goto clean2; |
4302 | } | |
40aabb58 BH |
4303 | |
4304 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 BH |
4305 | hba[i]->devname, pdev->device, pci_name(pdev), |
4306 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); | |
4307 | ||
4308 | hba[i]->cmd_pool_bits = | |
061837bc JL |
4309 | kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
4310 | * sizeof(unsigned long), GFP_KERNEL); | |
7c832835 BH |
4311 | hba[i]->cmd_pool = (CommandList_struct *) |
4312 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 4313 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
4314 | &(hba[i]->cmd_pool_dhandle)); |
4315 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
4316 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 4317 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
4318 | &(hba[i]->errinfo_pool_dhandle)); |
4319 | if ((hba[i]->cmd_pool_bits == NULL) | |
4320 | || (hba[i]->cmd_pool == NULL) | |
4321 | || (hba[i]->errinfo_pool == NULL)) { | |
4322 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
4323 | goto clean4; |
4324 | } | |
1da177e4 | 4325 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 4326 | |
7c832835 BH |
4327 | /* Initialize the pdev driver private data. |
4328 | have it point to hba[i]. */ | |
1da177e4 | 4329 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
4330 | /* command and error info recs zeroed out before |
4331 | they are used */ | |
4332 | memset(hba[i]->cmd_pool_bits, 0, | |
061837bc JL |
4333 | DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
4334 | * sizeof(unsigned long)); | |
1da177e4 | 4335 | |
6ae5ce8e MM |
4336 | hba[i]->num_luns = 0; |
4337 | hba[i]->highest_lun = -1; | |
4338 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
9cef0d2f | 4339 | hba[i]->drv[j] = NULL; |
6ae5ce8e MM |
4340 | hba[i]->gendisk[j] = NULL; |
4341 | } | |
1da177e4 LT |
4342 | |
4343 | cciss_scsi_setup(i); | |
4344 | ||
4345 | /* Turn the interrupts on so we can service requests */ | |
4346 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
4347 | ||
22bece00 MM |
4348 | /* Get the firmware version */ |
4349 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
4350 | if (inq_buff == NULL) { | |
4351 | printk(KERN_ERR "cciss: out of memory\n"); | |
4352 | goto clean4; | |
4353 | } | |
4354 | ||
4355 | return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff, | |
b57695fe | 4356 | sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); |
22bece00 MM |
4357 | if (return_code == IO_OK) { |
4358 | hba[i]->firm_ver[0] = inq_buff->data_byte[32]; | |
4359 | hba[i]->firm_ver[1] = inq_buff->data_byte[33]; | |
4360 | hba[i]->firm_ver[2] = inq_buff->data_byte[34]; | |
4361 | hba[i]->firm_ver[3] = inq_buff->data_byte[35]; | |
4362 | } else { /* send command failed */ | |
4363 | printk(KERN_WARNING "cciss: unable to determine firmware" | |
4364 | " version of controller\n"); | |
4365 | } | |
212a5026 | 4366 | kfree(inq_buff); |
22bece00 | 4367 | |
1da177e4 | 4368 | cciss_procinit(i); |
92c4231a MM |
4369 | |
4370 | hba[i]->cciss_max_sectors = 2048; | |
4371 | ||
2d11d993 | 4372 | rebuild_lun_table(hba[i], 1, 0); |
b368c9dd | 4373 | hba[i]->busy_initializing = 0; |
e2019b58 | 4374 | return 1; |
1da177e4 | 4375 | |
6ae5ce8e | 4376 | clean4: |
6044ec88 | 4377 | kfree(hba[i]->cmd_pool_bits); |
7c832835 | 4378 | if (hba[i]->cmd_pool) |
1da177e4 | 4379 | pci_free_consistent(hba[i]->pdev, |
f880632f | 4380 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
4381 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
4382 | if (hba[i]->errinfo_pool) | |
1da177e4 | 4383 | pci_free_consistent(hba[i]->pdev, |
f880632f | 4384 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
4385 | hba[i]->errinfo_pool, |
4386 | hba[i]->errinfo_pool_dhandle); | |
fb86a35b | 4387 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
6ae5ce8e | 4388 | clean2: |
1da177e4 | 4389 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
6ae5ce8e | 4390 | clean1: |
7fe06326 AP |
4391 | cciss_destroy_hba_sysfs_entry(hba[i]); |
4392 | clean0: | |
1f8ef380 | 4393 | hba[i]->busy_initializing = 0; |
9cef0d2f | 4394 | |
872225ca MM |
4395 | /* |
4396 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4397 | * Smart Array controllers that pci_enable_device does not undo | |
4398 | */ | |
799202cb | 4399 | pci_release_regions(pdev); |
799202cb | 4400 | pci_set_drvdata(pdev, NULL); |
61808c2b | 4401 | free_hba(i); |
e2019b58 | 4402 | return -1; |
1da177e4 LT |
4403 | } |
4404 | ||
e9ca75b5 | 4405 | static void cciss_shutdown(struct pci_dev *pdev) |
1da177e4 LT |
4406 | { |
4407 | ctlr_info_t *tmp_ptr; | |
e9ca75b5 | 4408 | int i; |
1da177e4 | 4409 | char flush_buf[4]; |
7c832835 | 4410 | int return_code; |
1da177e4 | 4411 | |
e9ca75b5 GB |
4412 | tmp_ptr = pci_get_drvdata(pdev); |
4413 | if (tmp_ptr == NULL) | |
4414 | return; | |
4415 | i = tmp_ptr->ctlr; | |
4416 | if (hba[i] == NULL) | |
4417 | return; | |
4418 | ||
4419 | /* Turn board interrupts off and send the flush cache command */ | |
4420 | /* sendcmd will turn off interrupt, and send the flush... | |
4421 | * To write all data in the battery backed cache to disks */ | |
4422 | memset(flush_buf, 0, 4); | |
b57695fe | 4423 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, |
4424 | CTLR_LUNID, TYPE_CMD); | |
e9ca75b5 GB |
4425 | if (return_code == IO_OK) { |
4426 | printk(KERN_INFO "Completed flushing cache on controller %d\n", i); | |
4427 | } else { | |
4428 | printk(KERN_WARNING "Error flushing cache on controller %d\n", i); | |
4429 | } | |
4430 | free_irq(hba[i]->intr[2], hba[i]); | |
4431 | } | |
4432 | ||
4433 | static void __devexit cciss_remove_one(struct pci_dev *pdev) | |
4434 | { | |
4435 | ctlr_info_t *tmp_ptr; | |
4436 | int i, j; | |
4437 | ||
7c832835 BH |
4438 | if (pci_get_drvdata(pdev) == NULL) { |
4439 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
4440 | return; |
4441 | } | |
0a9279cc | 4442 | |
1da177e4 LT |
4443 | tmp_ptr = pci_get_drvdata(pdev); |
4444 | i = tmp_ptr->ctlr; | |
7c832835 | 4445 | if (hba[i] == NULL) { |
1da177e4 | 4446 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 4447 | "already be removed \n"); |
1da177e4 LT |
4448 | return; |
4449 | } | |
b6550777 | 4450 | |
b368c9dd | 4451 | mutex_lock(&hba[i]->busy_shutting_down); |
0a9279cc | 4452 | |
b368c9dd | 4453 | remove_from_scan_list(hba[i]); |
b6550777 BH |
4454 | remove_proc_entry(hba[i]->devname, proc_cciss); |
4455 | unregister_blkdev(hba[i]->major, hba[i]->devname); | |
4456 | ||
4457 | /* remove it from the disk list */ | |
4458 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
4459 | struct gendisk *disk = hba[i]->gendisk[j]; | |
4460 | if (disk) { | |
165125e1 | 4461 | struct request_queue *q = disk->queue; |
b6550777 | 4462 | |
097d0264 | 4463 | if (disk->flags & GENHD_FL_UP) { |
8ce51966 | 4464 | cciss_destroy_ld_sysfs_entry(hba[i], j, 1); |
b6550777 | 4465 | del_gendisk(disk); |
097d0264 | 4466 | } |
b6550777 BH |
4467 | if (q) |
4468 | blk_cleanup_queue(q); | |
4469 | } | |
4470 | } | |
4471 | ||
ba198efb | 4472 | #ifdef CONFIG_CISS_SCSI_TAPE |
b6550777 | 4473 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
ba198efb | 4474 | #endif |
b6550777 | 4475 | |
e9ca75b5 | 4476 | cciss_shutdown(pdev); |
fb86a35b MM |
4477 | |
4478 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
4479 | if (hba[i]->msix_vector) |
4480 | pci_disable_msix(hba[i]->pdev); | |
4481 | else if (hba[i]->msi_vector) | |
4482 | pci_disable_msi(hba[i]->pdev); | |
4483 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 4484 | |
1da177e4 | 4485 | iounmap(hba[i]->vaddr); |
1da177e4 | 4486 | |
f880632f | 4487 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
1da177e4 | 4488 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
f880632f | 4489 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 | 4490 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
1da177e4 | 4491 | kfree(hba[i]->cmd_pool_bits); |
872225ca MM |
4492 | /* |
4493 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4494 | * Smart Array controllers that pci_enable_device does not undo | |
4495 | */ | |
7c832835 | 4496 | pci_release_regions(pdev); |
4e570309 | 4497 | pci_set_drvdata(pdev, NULL); |
7fe06326 | 4498 | cciss_destroy_hba_sysfs_entry(hba[i]); |
b368c9dd | 4499 | mutex_unlock(&hba[i]->busy_shutting_down); |
1da177e4 | 4500 | free_hba(i); |
7c832835 | 4501 | } |
1da177e4 LT |
4502 | |
4503 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
4504 | .name = "cciss", |
4505 | .probe = cciss_init_one, | |
4506 | .remove = __devexit_p(cciss_remove_one), | |
4507 | .id_table = cciss_pci_device_id, /* id_table */ | |
e9ca75b5 | 4508 | .shutdown = cciss_shutdown, |
1da177e4 LT |
4509 | }; |
4510 | ||
4511 | /* | |
4512 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 4513 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
4514 | */ |
4515 | static int __init cciss_init(void) | |
4516 | { | |
7fe06326 AP |
4517 | int err; |
4518 | ||
10cbda97 JA |
4519 | /* |
4520 | * The hardware requires that commands are aligned on a 64-bit | |
4521 | * boundary. Given that we use pci_alloc_consistent() to allocate an | |
4522 | * array of them, the size must be a multiple of 8 bytes. | |
4523 | */ | |
4524 | BUILD_BUG_ON(sizeof(CommandList_struct) % 8); | |
4525 | ||
1da177e4 LT |
4526 | printk(KERN_INFO DRIVER_NAME "\n"); |
4527 | ||
7fe06326 AP |
4528 | err = bus_register(&cciss_bus_type); |
4529 | if (err) | |
4530 | return err; | |
4531 | ||
b368c9dd AP |
4532 | /* Start the scan thread */ |
4533 | cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan"); | |
4534 | if (IS_ERR(cciss_scan_thread)) { | |
4535 | err = PTR_ERR(cciss_scan_thread); | |
4536 | goto err_bus_unregister; | |
4537 | } | |
4538 | ||
1da177e4 | 4539 | /* Register for our PCI devices */ |
7fe06326 AP |
4540 | err = pci_register_driver(&cciss_pci_driver); |
4541 | if (err) | |
b368c9dd | 4542 | goto err_thread_stop; |
7fe06326 | 4543 | |
617e1344 | 4544 | return err; |
7fe06326 | 4545 | |
b368c9dd AP |
4546 | err_thread_stop: |
4547 | kthread_stop(cciss_scan_thread); | |
4548 | err_bus_unregister: | |
7fe06326 | 4549 | bus_unregister(&cciss_bus_type); |
b368c9dd | 4550 | |
7fe06326 | 4551 | return err; |
1da177e4 LT |
4552 | } |
4553 | ||
4554 | static void __exit cciss_cleanup(void) | |
4555 | { | |
4556 | int i; | |
4557 | ||
4558 | pci_unregister_driver(&cciss_pci_driver); | |
4559 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
4560 | for (i = 0; i < MAX_CTLR; i++) { |
4561 | if (hba[i] != NULL) { | |
1da177e4 | 4562 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 4563 | " controller %d\n", i); |
1da177e4 LT |
4564 | cciss_remove_one(hba[i]->pdev); |
4565 | } | |
4566 | } | |
b368c9dd | 4567 | kthread_stop(cciss_scan_thread); |
928b4d8c | 4568 | remove_proc_entry("driver/cciss", NULL); |
7fe06326 | 4569 | bus_unregister(&cciss_bus_type); |
1da177e4 LT |
4570 | } |
4571 | ||
33079b21 MM |
4572 | static void fail_all_cmds(unsigned long ctlr) |
4573 | { | |
4574 | /* If we get here, the board is apparently dead. */ | |
4575 | ctlr_info_t *h = hba[ctlr]; | |
4576 | CommandList_struct *c; | |
4577 | unsigned long flags; | |
4578 | ||
4579 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); | |
7c832835 | 4580 | h->alive = 0; /* the controller apparently died... */ |
33079b21 MM |
4581 | |
4582 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
4583 | ||
7c832835 | 4584 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
33079b21 MM |
4585 | |
4586 | /* move everything off the request queue onto the completed queue */ | |
8a3173de JA |
4587 | while (!hlist_empty(&h->reqQ)) { |
4588 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); | |
4589 | removeQ(c); | |
33079b21 | 4590 | h->Qdepth--; |
8a3173de | 4591 | addQ(&h->cmpQ, c); |
33079b21 MM |
4592 | } |
4593 | ||
4594 | /* Now, fail everything on the completed queue with a HW error */ | |
8a3173de JA |
4595 | while (!hlist_empty(&h->cmpQ)) { |
4596 | c = hlist_entry(h->cmpQ.first, CommandList_struct, list); | |
4597 | removeQ(c); | |
b59e64d0 HR |
4598 | if (c->cmd_type != CMD_MSG_STALE) |
4599 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
33079b21 MM |
4600 | if (c->cmd_type == CMD_RWREQ) { |
4601 | complete_command(h, c, 0); | |
4602 | } else if (c->cmd_type == CMD_IOCTL_PEND) | |
4603 | complete(c->waiting); | |
4604 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
4605 | else if (c->cmd_type == CMD_SCSI) |
4606 | complete_scsi_command(c, 0, 0); | |
33079b21 MM |
4607 | #endif |
4608 | } | |
4609 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
4610 | return; | |
4611 | } | |
4612 | ||
1da177e4 LT |
4613 | module_init(cciss_init); |
4614 | module_exit(cciss_cleanup); |