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> |
1da177e4 LT |
39 | #include <linux/hdreg.h> |
40 | #include <linux/spinlock.h> | |
41 | #include <linux/compat.h> | |
42 | #include <asm/uaccess.h> | |
43 | #include <asm/io.h> | |
44 | ||
eb0df996 | 45 | #include <linux/dma-mapping.h> |
1da177e4 LT |
46 | #include <linux/blkdev.h> |
47 | #include <linux/genhd.h> | |
48 | #include <linux/completion.h> | |
d5d3b736 | 49 | #include <scsi/scsi.h> |
03bbfee5 MMOD |
50 | #include <scsi/sg.h> |
51 | #include <scsi/scsi_ioctl.h> | |
52 | #include <linux/cdrom.h> | |
231bc2a2 | 53 | #include <linux/scatterlist.h> |
0a9279cc | 54 | #include <linux/kthread.h> |
1da177e4 LT |
55 | |
56 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) | |
24aac480 MM |
57 | #define DRIVER_NAME "HP CISS Driver (v 3.6.20)" |
58 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 20) | |
1da177e4 LT |
59 | |
60 | /* Embedded module documentation macros - see modules.h */ | |
61 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
24aac480 | 62 | MODULE_DESCRIPTION("Driver for HP Smart Array Controllers"); |
1da177e4 | 63 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
24aac480 MM |
64 | " SA6i P600 P800 P400 P400i E200 E200i E500 P700m" |
65 | " Smart Array G2 Series SAS/SATA Controllers"); | |
66 | MODULE_VERSION("3.6.20"); | |
1da177e4 LT |
67 | MODULE_LICENSE("GPL"); |
68 | ||
69 | #include "cciss_cmd.h" | |
70 | #include "cciss.h" | |
71 | #include <linux/cciss_ioctl.h> | |
72 | ||
73 | /* define the PCI info for the cards we can control */ | |
74 | static const struct pci_device_id cciss_pci_device_id[] = { | |
f82ccdb9 BH |
75 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
76 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, | |
77 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, | |
78 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, | |
79 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, | |
80 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, | |
81 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, | |
82 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, | |
83 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, | |
84 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, | |
85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, | |
86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, | |
87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, | |
88 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, | |
89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, | |
90 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, | |
91 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, | |
92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, | |
de923916 | 93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, |
9cff3b38 | 94 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
24aac480 MM |
95 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, |
96 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, | |
97 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, | |
98 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, | |
99 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, | |
77ca7286 MM |
100 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A}, |
101 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B}, | |
4ff9a9a4 MM |
102 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
103 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, | |
1da177e4 LT |
104 | {0,} |
105 | }; | |
7c832835 | 106 | |
1da177e4 LT |
107 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
108 | ||
1da177e4 LT |
109 | /* board_id = Subsystem Device ID & Vendor ID |
110 | * product = Marketing Name for the board | |
7c832835 | 111 | * access = Address of the struct of function pointers |
1da177e4 LT |
112 | */ |
113 | static struct board_type products[] = { | |
49153998 MM |
114 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
115 | {0x40800E11, "Smart Array 5i", &SA5B_access}, | |
116 | {0x40820E11, "Smart Array 532", &SA5B_access}, | |
117 | {0x40830E11, "Smart Array 5312", &SA5B_access}, | |
118 | {0x409A0E11, "Smart Array 641", &SA5_access}, | |
119 | {0x409B0E11, "Smart Array 642", &SA5_access}, | |
120 | {0x409C0E11, "Smart Array 6400", &SA5_access}, | |
121 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, | |
122 | {0x40910E11, "Smart Array 6i", &SA5_access}, | |
123 | {0x3225103C, "Smart Array P600", &SA5_access}, | |
124 | {0x3223103C, "Smart Array P800", &SA5_access}, | |
125 | {0x3234103C, "Smart Array P400", &SA5_access}, | |
126 | {0x3235103C, "Smart Array P400i", &SA5_access}, | |
127 | {0x3211103C, "Smart Array E200i", &SA5_access}, | |
128 | {0x3212103C, "Smart Array E200", &SA5_access}, | |
129 | {0x3213103C, "Smart Array E200i", &SA5_access}, | |
130 | {0x3214103C, "Smart Array E200i", &SA5_access}, | |
131 | {0x3215103C, "Smart Array E200i", &SA5_access}, | |
132 | {0x3237103C, "Smart Array E500", &SA5_access}, | |
133 | {0x323D103C, "Smart Array P700m", &SA5_access}, | |
134 | {0x3241103C, "Smart Array P212", &SA5_access}, | |
135 | {0x3243103C, "Smart Array P410", &SA5_access}, | |
136 | {0x3245103C, "Smart Array P410i", &SA5_access}, | |
137 | {0x3247103C, "Smart Array P411", &SA5_access}, | |
138 | {0x3249103C, "Smart Array P812", &SA5_access}, | |
77ca7286 MM |
139 | {0x324A103C, "Smart Array P712m", &SA5_access}, |
140 | {0x324B103C, "Smart Array P711m", &SA5_access}, | |
49153998 | 141 | {0xFFFF103C, "Unknown Smart Array", &SA5_access}, |
1da177e4 LT |
142 | }; |
143 | ||
d14c4ab5 | 144 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
7c832835 | 145 | #define MAX_CONFIG_WAIT 30000 |
1da177e4 LT |
146 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
147 | ||
148 | /*define how many times we will try a command because of bus resets */ | |
149 | #define MAX_CMD_RETRIES 3 | |
150 | ||
1da177e4 LT |
151 | #define MAX_CTLR 32 |
152 | ||
153 | /* Originally cciss driver only supports 8 major numbers */ | |
154 | #define MAX_CTLR_ORIG 8 | |
155 | ||
1da177e4 LT |
156 | static ctlr_info_t *hba[MAX_CTLR]; |
157 | ||
165125e1 | 158 | static void do_cciss_request(struct request_queue *q); |
7d12e780 | 159 | static irqreturn_t do_cciss_intr(int irq, void *dev_id); |
ef7822c2 AV |
160 | static int cciss_open(struct block_device *bdev, fmode_t mode); |
161 | static int cciss_release(struct gendisk *disk, fmode_t mode); | |
162 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, | |
7c832835 | 163 | unsigned int cmd, unsigned long arg); |
a885c8c4 | 164 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 | 165 | |
1da177e4 | 166 | static int cciss_revalidate(struct gendisk *disk); |
6ae5ce8e | 167 | static int rebuild_lun_table(ctlr_info_t *h, int first_time); |
a0ea8622 | 168 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
7c832835 | 169 | int clear_all); |
1da177e4 | 170 | |
00988a35 MMOD |
171 | static void cciss_read_capacity(int ctlr, int logvol, int withirq, |
172 | sector_t *total_size, unsigned int *block_size); | |
173 | static void cciss_read_capacity_16(int ctlr, int logvol, int withirq, | |
174 | sector_t *total_size, unsigned int *block_size); | |
175 | static void cciss_geometry_inquiry(int ctlr, int logvol, | |
176 | int withirq, sector_t total_size, | |
177 | unsigned int block_size, InquiryData_struct *inq_buff, | |
7c832835 | 178 | drive_info_struct *drv); |
7c832835 BH |
179 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
180 | __u32); | |
181 | static void start_io(ctlr_info_t *h); | |
182 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, | |
7c832835 BH |
183 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); |
184 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, | |
b57695fe | 185 | __u8 page_code, unsigned char scsi3addr[], |
186 | int cmd_type); | |
85cc61ae | 187 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
188 | int attempt_retry); | |
189 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c); | |
1da177e4 | 190 | |
33079b21 | 191 | static void fail_all_cmds(unsigned long ctlr); |
0a9279cc MM |
192 | static int scan_thread(void *data); |
193 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c); | |
33079b21 | 194 | |
1da177e4 | 195 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
196 | static void cciss_procinit(int i); |
197 | #else | |
7c832835 BH |
198 | static void cciss_procinit(int i) |
199 | { | |
200 | } | |
201 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
202 | |
203 | #ifdef CONFIG_COMPAT | |
ef7822c2 AV |
204 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
205 | unsigned, unsigned long); | |
1da177e4 LT |
206 | #endif |
207 | ||
7c832835 BH |
208 | static struct block_device_operations cciss_fops = { |
209 | .owner = THIS_MODULE, | |
ef7822c2 AV |
210 | .open = cciss_open, |
211 | .release = cciss_release, | |
212 | .locked_ioctl = cciss_ioctl, | |
7c832835 | 213 | .getgeo = cciss_getgeo, |
1da177e4 | 214 | #ifdef CONFIG_COMPAT |
ef7822c2 | 215 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 216 | #endif |
7c832835 | 217 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
218 | }; |
219 | ||
220 | /* | |
221 | * Enqueuing and dequeuing functions for cmdlists. | |
222 | */ | |
8a3173de | 223 | static inline void addQ(struct hlist_head *list, CommandList_struct *c) |
1da177e4 | 224 | { |
8a3173de | 225 | hlist_add_head(&c->list, list); |
1da177e4 LT |
226 | } |
227 | ||
8a3173de | 228 | static inline void removeQ(CommandList_struct *c) |
1da177e4 | 229 | { |
b59e64d0 HR |
230 | /* |
231 | * After kexec/dump some commands might still | |
232 | * be in flight, which the firmware will try | |
233 | * to complete. Resetting the firmware doesn't work | |
234 | * with old fw revisions, so we have to mark | |
235 | * them off as 'stale' to prevent the driver from | |
236 | * falling over. | |
237 | */ | |
238 | if (WARN_ON(hlist_unhashed(&c->list))) { | |
239 | c->cmd_type = CMD_MSG_STALE; | |
8a3173de | 240 | return; |
b59e64d0 | 241 | } |
8a3173de JA |
242 | |
243 | hlist_del_init(&c->list); | |
1da177e4 LT |
244 | } |
245 | ||
246 | #include "cciss_scsi.c" /* For SCSI tape support */ | |
247 | ||
0f5486ec RD |
248 | #define RAID_UNKNOWN 6 |
249 | ||
1da177e4 LT |
250 | #ifdef CONFIG_PROC_FS |
251 | ||
252 | /* | |
253 | * Report information about this controller. | |
254 | */ | |
255 | #define ENG_GIG 1000000000 | |
256 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
89b6e743 | 257 | #define ENGAGE_SCSI "engage scsi" |
7c832835 BH |
258 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
259 | "UNKNOWN" | |
260 | }; | |
1da177e4 LT |
261 | |
262 | static struct proc_dir_entry *proc_cciss; | |
263 | ||
89b6e743 | 264 | static void cciss_seq_show_header(struct seq_file *seq) |
1da177e4 | 265 | { |
89b6e743 MM |
266 | ctlr_info_t *h = seq->private; |
267 | ||
268 | seq_printf(seq, "%s: HP %s Controller\n" | |
269 | "Board ID: 0x%08lx\n" | |
270 | "Firmware Version: %c%c%c%c\n" | |
271 | "IRQ: %d\n" | |
272 | "Logical drives: %d\n" | |
273 | "Current Q depth: %d\n" | |
274 | "Current # commands on controller: %d\n" | |
275 | "Max Q depth since init: %d\n" | |
276 | "Max # commands on controller since init: %d\n" | |
277 | "Max SG entries since init: %d\n", | |
278 | h->devname, | |
279 | h->product_name, | |
280 | (unsigned long)h->board_id, | |
281 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
282 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], | |
283 | h->num_luns, | |
284 | h->Qdepth, h->commands_outstanding, | |
285 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
286 | ||
287 | #ifdef CONFIG_CISS_SCSI_TAPE | |
288 | cciss_seq_tape_report(seq, h->ctlr); | |
289 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
290 | } | |
1da177e4 | 291 | |
89b6e743 MM |
292 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
293 | { | |
294 | ctlr_info_t *h = seq->private; | |
295 | unsigned ctlr = h->ctlr; | |
296 | unsigned long flags; | |
1da177e4 LT |
297 | |
298 | /* prevent displaying bogus info during configuration | |
299 | * or deconfiguration of a logical volume | |
300 | */ | |
301 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
302 | if (h->busy_configuring) { | |
303 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
89b6e743 | 304 | return ERR_PTR(-EBUSY); |
1da177e4 LT |
305 | } |
306 | h->busy_configuring = 1; | |
307 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
308 | ||
89b6e743 MM |
309 | if (*pos == 0) |
310 | cciss_seq_show_header(seq); | |
311 | ||
312 | return pos; | |
313 | } | |
314 | ||
315 | static int cciss_seq_show(struct seq_file *seq, void *v) | |
316 | { | |
317 | sector_t vol_sz, vol_sz_frac; | |
318 | ctlr_info_t *h = seq->private; | |
319 | unsigned ctlr = h->ctlr; | |
320 | loff_t *pos = v; | |
321 | drive_info_struct *drv = &h->drv[*pos]; | |
322 | ||
323 | if (*pos > h->highest_lun) | |
324 | return 0; | |
325 | ||
326 | if (drv->heads == 0) | |
327 | return 0; | |
328 | ||
329 | vol_sz = drv->nr_blocks; | |
330 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
331 | vol_sz_frac *= 100; | |
332 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
333 | ||
334 | if (drv->raid_level > 5) | |
335 | drv->raid_level = RAID_UNKNOWN; | |
336 | seq_printf(seq, "cciss/c%dd%d:" | |
337 | "\t%4u.%02uGB\tRAID %s\n", | |
338 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, | |
339 | raid_label[drv->raid_level]); | |
340 | return 0; | |
341 | } | |
342 | ||
343 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
344 | { | |
345 | ctlr_info_t *h = seq->private; | |
346 | ||
347 | if (*pos > h->highest_lun) | |
348 | return NULL; | |
349 | *pos += 1; | |
350 | ||
351 | return pos; | |
352 | } | |
353 | ||
354 | static void cciss_seq_stop(struct seq_file *seq, void *v) | |
355 | { | |
356 | ctlr_info_t *h = seq->private; | |
357 | ||
358 | /* Only reset h->busy_configuring if we succeeded in setting | |
359 | * it during cciss_seq_start. */ | |
360 | if (v == ERR_PTR(-EBUSY)) | |
361 | return; | |
7c832835 | 362 | |
1da177e4 | 363 | h->busy_configuring = 0; |
1da177e4 LT |
364 | } |
365 | ||
89b6e743 MM |
366 | static struct seq_operations cciss_seq_ops = { |
367 | .start = cciss_seq_start, | |
368 | .show = cciss_seq_show, | |
369 | .next = cciss_seq_next, | |
370 | .stop = cciss_seq_stop, | |
371 | }; | |
372 | ||
373 | static int cciss_seq_open(struct inode *inode, struct file *file) | |
374 | { | |
375 | int ret = seq_open(file, &cciss_seq_ops); | |
376 | struct seq_file *seq = file->private_data; | |
377 | ||
378 | if (!ret) | |
379 | seq->private = PDE(inode)->data; | |
380 | ||
381 | return ret; | |
382 | } | |
383 | ||
384 | static ssize_t | |
385 | cciss_proc_write(struct file *file, const char __user *buf, | |
386 | size_t length, loff_t *ppos) | |
1da177e4 | 387 | { |
89b6e743 MM |
388 | int err; |
389 | char *buffer; | |
390 | ||
391 | #ifndef CONFIG_CISS_SCSI_TAPE | |
392 | return -EINVAL; | |
1da177e4 LT |
393 | #endif |
394 | ||
89b6e743 | 395 | if (!buf || length > PAGE_SIZE - 1) |
7c832835 | 396 | return -EINVAL; |
89b6e743 MM |
397 | |
398 | buffer = (char *)__get_free_page(GFP_KERNEL); | |
399 | if (!buffer) | |
400 | return -ENOMEM; | |
401 | ||
402 | err = -EFAULT; | |
403 | if (copy_from_user(buffer, buf, length)) | |
404 | goto out; | |
405 | buffer[length] = '\0'; | |
406 | ||
407 | #ifdef CONFIG_CISS_SCSI_TAPE | |
408 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { | |
409 | struct seq_file *seq = file->private_data; | |
410 | ctlr_info_t *h = seq->private; | |
411 | int rc; | |
412 | ||
7c832835 BH |
413 | rc = cciss_engage_scsi(h->ctlr); |
414 | if (rc != 0) | |
89b6e743 MM |
415 | err = -rc; |
416 | else | |
417 | err = length; | |
418 | } else | |
419 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
420 | err = -EINVAL; | |
7c832835 BH |
421 | /* might be nice to have "disengage" too, but it's not |
422 | safely possible. (only 1 module use count, lock issues.) */ | |
89b6e743 MM |
423 | |
424 | out: | |
425 | free_page((unsigned long)buffer); | |
426 | return err; | |
1da177e4 LT |
427 | } |
428 | ||
89b6e743 MM |
429 | static struct file_operations cciss_proc_fops = { |
430 | .owner = THIS_MODULE, | |
431 | .open = cciss_seq_open, | |
432 | .read = seq_read, | |
433 | .llseek = seq_lseek, | |
434 | .release = seq_release, | |
435 | .write = cciss_proc_write, | |
436 | }; | |
437 | ||
1da177e4 LT |
438 | static void __devinit cciss_procinit(int i) |
439 | { | |
440 | struct proc_dir_entry *pde; | |
441 | ||
89b6e743 | 442 | if (proc_cciss == NULL) |
928b4d8c | 443 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
89b6e743 MM |
444 | if (!proc_cciss) |
445 | return; | |
3dfcf9c4 | 446 | pde = proc_create_data(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
89b6e743 | 447 | S_IROTH, proc_cciss, |
3dfcf9c4 | 448 | &cciss_proc_fops, hba[i]); |
1da177e4 | 449 | } |
7c832835 | 450 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 451 | |
7fe06326 AP |
452 | #define MAX_PRODUCT_NAME_LEN 19 |
453 | ||
454 | #define to_hba(n) container_of(n, struct ctlr_info, dev) | |
455 | #define to_drv(n) container_of(n, drive_info_struct, dev) | |
456 | ||
457 | static struct device_type cciss_host_type = { | |
458 | .name = "cciss_host", | |
459 | }; | |
460 | ||
461 | static ssize_t dev_show_unique_id(struct device *dev, | |
462 | struct device_attribute *attr, | |
463 | char *buf) | |
464 | { | |
465 | drive_info_struct *drv = to_drv(dev); | |
466 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
467 | __u8 sn[16]; | |
468 | unsigned long flags; | |
469 | int ret = 0; | |
470 | ||
471 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
472 | if (h->busy_configuring) | |
473 | ret = -EBUSY; | |
474 | else | |
475 | memcpy(sn, drv->serial_no, sizeof(sn)); | |
476 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
477 | ||
478 | if (ret) | |
479 | return ret; | |
480 | else | |
481 | return snprintf(buf, 16 * 2 + 2, | |
482 | "%02X%02X%02X%02X%02X%02X%02X%02X" | |
483 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", | |
484 | sn[0], sn[1], sn[2], sn[3], | |
485 | sn[4], sn[5], sn[6], sn[7], | |
486 | sn[8], sn[9], sn[10], sn[11], | |
487 | sn[12], sn[13], sn[14], sn[15]); | |
488 | } | |
489 | DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); | |
490 | ||
491 | static ssize_t dev_show_vendor(struct device *dev, | |
492 | struct device_attribute *attr, | |
493 | char *buf) | |
494 | { | |
495 | drive_info_struct *drv = to_drv(dev); | |
496 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
497 | char vendor[VENDOR_LEN + 1]; | |
498 | unsigned long flags; | |
499 | int ret = 0; | |
500 | ||
501 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
502 | if (h->busy_configuring) | |
503 | ret = -EBUSY; | |
504 | else | |
505 | memcpy(vendor, drv->vendor, VENDOR_LEN + 1); | |
506 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
507 | ||
508 | if (ret) | |
509 | return ret; | |
510 | else | |
511 | return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); | |
512 | } | |
513 | DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); | |
514 | ||
515 | static ssize_t dev_show_model(struct device *dev, | |
516 | struct device_attribute *attr, | |
517 | char *buf) | |
518 | { | |
519 | drive_info_struct *drv = to_drv(dev); | |
520 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
521 | char model[MODEL_LEN + 1]; | |
522 | unsigned long flags; | |
523 | int ret = 0; | |
524 | ||
525 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
526 | if (h->busy_configuring) | |
527 | ret = -EBUSY; | |
528 | else | |
529 | memcpy(model, drv->model, MODEL_LEN + 1); | |
530 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
531 | ||
532 | if (ret) | |
533 | return ret; | |
534 | else | |
535 | return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); | |
536 | } | |
537 | DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); | |
538 | ||
539 | static ssize_t dev_show_rev(struct device *dev, | |
540 | struct device_attribute *attr, | |
541 | char *buf) | |
542 | { | |
543 | drive_info_struct *drv = to_drv(dev); | |
544 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
545 | char rev[REV_LEN + 1]; | |
546 | unsigned long flags; | |
547 | int ret = 0; | |
548 | ||
549 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
550 | if (h->busy_configuring) | |
551 | ret = -EBUSY; | |
552 | else | |
553 | memcpy(rev, drv->rev, REV_LEN + 1); | |
554 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
555 | ||
556 | if (ret) | |
557 | return ret; | |
558 | else | |
559 | return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); | |
560 | } | |
561 | DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); | |
562 | ||
563 | static struct attribute *cciss_dev_attrs[] = { | |
564 | &dev_attr_unique_id.attr, | |
565 | &dev_attr_model.attr, | |
566 | &dev_attr_vendor.attr, | |
567 | &dev_attr_rev.attr, | |
568 | NULL | |
569 | }; | |
570 | ||
571 | static struct attribute_group cciss_dev_attr_group = { | |
572 | .attrs = cciss_dev_attrs, | |
573 | }; | |
574 | ||
a4dbd674 | 575 | static const struct attribute_group *cciss_dev_attr_groups[] = { |
7fe06326 AP |
576 | &cciss_dev_attr_group, |
577 | NULL | |
578 | }; | |
579 | ||
580 | static struct device_type cciss_dev_type = { | |
581 | .name = "cciss_device", | |
582 | .groups = cciss_dev_attr_groups, | |
583 | }; | |
584 | ||
585 | static struct bus_type cciss_bus_type = { | |
586 | .name = "cciss", | |
587 | }; | |
588 | ||
589 | ||
590 | /* | |
591 | * Initialize sysfs entry for each controller. This sets up and registers | |
592 | * the 'cciss#' directory for each individual controller under | |
593 | * /sys/bus/pci/devices/<dev>/. | |
594 | */ | |
595 | static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) | |
596 | { | |
597 | device_initialize(&h->dev); | |
598 | h->dev.type = &cciss_host_type; | |
599 | h->dev.bus = &cciss_bus_type; | |
600 | dev_set_name(&h->dev, "%s", h->devname); | |
601 | h->dev.parent = &h->pdev->dev; | |
602 | ||
603 | return device_add(&h->dev); | |
604 | } | |
605 | ||
606 | /* | |
607 | * Remove sysfs entries for an hba. | |
608 | */ | |
609 | static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) | |
610 | { | |
611 | device_del(&h->dev); | |
612 | } | |
613 | ||
614 | /* | |
615 | * Initialize sysfs for each logical drive. This sets up and registers | |
616 | * the 'c#d#' directory for each individual logical drive under | |
617 | * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from | |
618 | * /sys/block/cciss!c#d# to this entry. | |
619 | */ | |
620 | static int cciss_create_ld_sysfs_entry(struct ctlr_info *h, | |
621 | drive_info_struct *drv, | |
622 | int drv_index) | |
623 | { | |
624 | device_initialize(&drv->dev); | |
625 | drv->dev.type = &cciss_dev_type; | |
626 | drv->dev.bus = &cciss_bus_type; | |
627 | dev_set_name(&drv->dev, "c%dd%d", h->ctlr, drv_index); | |
628 | drv->dev.parent = &h->dev; | |
629 | return device_add(&drv->dev); | |
630 | } | |
631 | ||
632 | /* | |
633 | * Remove sysfs entries for a logical drive. | |
634 | */ | |
635 | static void cciss_destroy_ld_sysfs_entry(drive_info_struct *drv) | |
636 | { | |
637 | device_del(&drv->dev); | |
638 | } | |
639 | ||
7c832835 BH |
640 | /* |
641 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 642 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
643 | * which ones are free or in use. For operations that can wait for kmalloc |
644 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
645 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
646 | */ | |
647 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
648 | { |
649 | CommandList_struct *c; | |
7c832835 | 650 | int i; |
1da177e4 LT |
651 | u64bit temp64; |
652 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
653 | ||
7c832835 BH |
654 | if (!get_from_pool) { |
655 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
656 | sizeof(CommandList_struct), &cmd_dma_handle); | |
657 | if (c == NULL) | |
658 | return NULL; | |
1da177e4 LT |
659 | memset(c, 0, sizeof(CommandList_struct)); |
660 | ||
33079b21 MM |
661 | c->cmdindex = -1; |
662 | ||
7c832835 BH |
663 | c->err_info = (ErrorInfo_struct *) |
664 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
665 | &err_dma_handle); | |
666 | ||
667 | if (c->err_info == NULL) { | |
668 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
669 | sizeof(CommandList_struct), c, cmd_dma_handle); |
670 | return NULL; | |
671 | } | |
672 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
673 | } else { /* get it out of the controllers pool */ |
674 | ||
675 | do { | |
f880632f MM |
676 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
677 | if (i == h->nr_cmds) | |
7c832835 BH |
678 | return NULL; |
679 | } while (test_and_set_bit | |
680 | (i & (BITS_PER_LONG - 1), | |
681 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
682 | #ifdef CCISS_DEBUG |
683 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
684 | #endif | |
7c832835 | 685 | c = h->cmd_pool + i; |
1da177e4 | 686 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
687 | cmd_dma_handle = h->cmd_pool_dhandle |
688 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
689 | c->err_info = h->errinfo_pool + i; |
690 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
691 | err_dma_handle = h->errinfo_pool_dhandle |
692 | + i * sizeof(ErrorInfo_struct); | |
693 | h->nr_allocs++; | |
33079b21 MM |
694 | |
695 | c->cmdindex = i; | |
7c832835 | 696 | } |
1da177e4 | 697 | |
8a3173de | 698 | INIT_HLIST_NODE(&c->list); |
1da177e4 | 699 | c->busaddr = (__u32) cmd_dma_handle; |
7c832835 | 700 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
701 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
702 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
703 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 704 | |
7c832835 BH |
705 | c->ctlr = h->ctlr; |
706 | return c; | |
1da177e4 LT |
707 | } |
708 | ||
7c832835 BH |
709 | /* |
710 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
711 | */ |
712 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
713 | { | |
714 | int i; | |
715 | u64bit temp64; | |
716 | ||
7c832835 | 717 | if (!got_from_pool) { |
1da177e4 LT |
718 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
719 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
720 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
721 | c->err_info, (dma_addr_t) temp64.val); | |
722 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
723 | c, (dma_addr_t) c->busaddr); | |
724 | } else { | |
1da177e4 | 725 | i = c - h->cmd_pool; |
7c832835 BH |
726 | clear_bit(i & (BITS_PER_LONG - 1), |
727 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
728 | h->nr_frees++; | |
729 | } | |
1da177e4 LT |
730 | } |
731 | ||
732 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
733 | { | |
7c832835 | 734 | return disk->queue->queuedata; |
1da177e4 LT |
735 | } |
736 | ||
737 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
738 | { | |
739 | return disk->private_data; | |
740 | } | |
741 | ||
742 | /* | |
743 | * Open. Make sure the device is really there. | |
744 | */ | |
ef7822c2 | 745 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
1da177e4 | 746 | { |
ef7822c2 AV |
747 | ctlr_info_t *host = get_host(bdev->bd_disk); |
748 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1da177e4 LT |
749 | |
750 | #ifdef CCISS_DEBUG | |
ef7822c2 | 751 | printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name); |
7c832835 | 752 | #endif /* CCISS_DEBUG */ |
1da177e4 | 753 | |
ddd47442 MM |
754 | if (host->busy_initializing || drv->busy_configuring) |
755 | return -EBUSY; | |
1da177e4 LT |
756 | /* |
757 | * Root is allowed to open raw volume zero even if it's not configured | |
758 | * so array config can still work. Root is also allowed to open any | |
759 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
760 | * disk information. I don't think I really like this | |
761 | * but I'm already using way to many device nodes to claim another one | |
762 | * for "raw controller". | |
763 | */ | |
7a06f789 | 764 | if (drv->heads == 0) { |
ef7822c2 | 765 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
1da177e4 | 766 | /* if not node 0 make sure it is a partition = 0 */ |
ef7822c2 | 767 | if (MINOR(bdev->bd_dev) & 0x0f) { |
7c832835 | 768 | return -ENXIO; |
1da177e4 LT |
769 | /* if it is, make sure we have a LUN ID */ |
770 | } else if (drv->LunID == 0) { | |
771 | return -ENXIO; | |
772 | } | |
773 | } | |
774 | if (!capable(CAP_SYS_ADMIN)) | |
775 | return -EPERM; | |
776 | } | |
777 | drv->usage_count++; | |
778 | host->usage_count++; | |
779 | return 0; | |
780 | } | |
7c832835 | 781 | |
1da177e4 LT |
782 | /* |
783 | * Close. Sync first. | |
784 | */ | |
ef7822c2 | 785 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
1da177e4 | 786 | { |
ef7822c2 AV |
787 | ctlr_info_t *host = get_host(disk); |
788 | drive_info_struct *drv = get_drv(disk); | |
1da177e4 LT |
789 | |
790 | #ifdef CCISS_DEBUG | |
ef7822c2 | 791 | printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name); |
7c832835 | 792 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
793 | |
794 | drv->usage_count--; | |
795 | host->usage_count--; | |
796 | return 0; | |
797 | } | |
798 | ||
799 | #ifdef CONFIG_COMPAT | |
800 | ||
ef7822c2 AV |
801 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
802 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
803 | { |
804 | int ret; | |
805 | lock_kernel(); | |
ef7822c2 | 806 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
807 | unlock_kernel(); |
808 | return ret; | |
809 | } | |
810 | ||
ef7822c2 AV |
811 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
812 | unsigned cmd, unsigned long arg); | |
813 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, | |
814 | unsigned cmd, unsigned long arg); | |
1da177e4 | 815 | |
ef7822c2 AV |
816 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
817 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
818 | { |
819 | switch (cmd) { | |
820 | case CCISS_GETPCIINFO: | |
821 | case CCISS_GETINTINFO: | |
822 | case CCISS_SETINTINFO: | |
823 | case CCISS_GETNODENAME: | |
824 | case CCISS_SETNODENAME: | |
825 | case CCISS_GETHEARTBEAT: | |
826 | case CCISS_GETBUSTYPES: | |
827 | case CCISS_GETFIRMVER: | |
828 | case CCISS_GETDRIVVER: | |
829 | case CCISS_REVALIDVOLS: | |
830 | case CCISS_DEREGDISK: | |
831 | case CCISS_REGNEWDISK: | |
832 | case CCISS_REGNEWD: | |
833 | case CCISS_RESCANDISK: | |
834 | case CCISS_GETLUNINFO: | |
ef7822c2 | 835 | return do_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
836 | |
837 | case CCISS_PASSTHRU32: | |
ef7822c2 | 838 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
1da177e4 | 839 | case CCISS_BIG_PASSTHRU32: |
ef7822c2 | 840 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
1da177e4 LT |
841 | |
842 | default: | |
843 | return -ENOIOCTLCMD; | |
844 | } | |
845 | } | |
846 | ||
ef7822c2 AV |
847 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
848 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
849 | { |
850 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 851 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
852 | IOCTL_Command_struct arg64; |
853 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
854 | int err; | |
855 | u32 cp; | |
856 | ||
857 | err = 0; | |
7c832835 BH |
858 | err |= |
859 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
860 | sizeof(arg64.LUN_info)); | |
861 | err |= | |
862 | copy_from_user(&arg64.Request, &arg32->Request, | |
863 | sizeof(arg64.Request)); | |
864 | err |= | |
865 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
866 | sizeof(arg64.error_info)); | |
1da177e4 LT |
867 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
868 | err |= get_user(cp, &arg32->buf); | |
869 | arg64.buf = compat_ptr(cp); | |
870 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
871 | ||
872 | if (err) | |
873 | return -EFAULT; | |
874 | ||
ef7822c2 | 875 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
876 | if (err) |
877 | return err; | |
7c832835 BH |
878 | err |= |
879 | copy_in_user(&arg32->error_info, &p->error_info, | |
880 | sizeof(arg32->error_info)); | |
1da177e4 LT |
881 | if (err) |
882 | return -EFAULT; | |
883 | return err; | |
884 | } | |
885 | ||
ef7822c2 AV |
886 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
887 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
888 | { |
889 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 890 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 891 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
892 | BIG_IOCTL_Command_struct __user *p = |
893 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
894 | int err; |
895 | u32 cp; | |
896 | ||
897 | err = 0; | |
7c832835 BH |
898 | err |= |
899 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
900 | sizeof(arg64.LUN_info)); | |
901 | err |= | |
902 | copy_from_user(&arg64.Request, &arg32->Request, | |
903 | sizeof(arg64.Request)); | |
904 | err |= | |
905 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
906 | sizeof(arg64.error_info)); | |
1da177e4 LT |
907 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
908 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
909 | err |= get_user(cp, &arg32->buf); | |
910 | arg64.buf = compat_ptr(cp); | |
911 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
912 | ||
913 | if (err) | |
7c832835 | 914 | return -EFAULT; |
1da177e4 | 915 | |
ef7822c2 | 916 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
917 | if (err) |
918 | return err; | |
7c832835 BH |
919 | err |= |
920 | copy_in_user(&arg32->error_info, &p->error_info, | |
921 | sizeof(arg32->error_info)); | |
1da177e4 LT |
922 | if (err) |
923 | return -EFAULT; | |
924 | return err; | |
925 | } | |
926 | #endif | |
a885c8c4 CH |
927 | |
928 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
929 | { | |
930 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
931 | ||
932 | if (!drv->cylinders) | |
933 | return -ENXIO; | |
934 | ||
935 | geo->heads = drv->heads; | |
936 | geo->sectors = drv->sectors; | |
937 | geo->cylinders = drv->cylinders; | |
938 | return 0; | |
939 | } | |
940 | ||
0a9279cc MM |
941 | static void check_ioctl_unit_attention(ctlr_info_t *host, CommandList_struct *c) |
942 | { | |
943 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
944 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) | |
945 | (void)check_for_unit_attention(host, c); | |
946 | } | |
1da177e4 | 947 | /* |
7c832835 | 948 | * ioctl |
1da177e4 | 949 | */ |
ef7822c2 | 950 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
7c832835 | 951 | unsigned int cmd, unsigned long arg) |
1da177e4 | 952 | { |
1da177e4 LT |
953 | struct gendisk *disk = bdev->bd_disk; |
954 | ctlr_info_t *host = get_host(disk); | |
955 | drive_info_struct *drv = get_drv(disk); | |
956 | int ctlr = host->ctlr; | |
957 | void __user *argp = (void __user *)arg; | |
958 | ||
959 | #ifdef CCISS_DEBUG | |
960 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
961 | #endif /* CCISS_DEBUG */ |
962 | ||
963 | switch (cmd) { | |
1da177e4 | 964 | case CCISS_GETPCIINFO: |
7c832835 BH |
965 | { |
966 | cciss_pci_info_struct pciinfo; | |
967 | ||
968 | if (!arg) | |
969 | return -EINVAL; | |
970 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
971 | pciinfo.bus = host->pdev->bus->number; | |
972 | pciinfo.dev_fn = host->pdev->devfn; | |
973 | pciinfo.board_id = host->board_id; | |
974 | if (copy_to_user | |
975 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
976 | return -EFAULT; | |
977 | return 0; | |
978 | } | |
1da177e4 | 979 | case CCISS_GETINTINFO: |
7c832835 BH |
980 | { |
981 | cciss_coalint_struct intinfo; | |
982 | if (!arg) | |
983 | return -EINVAL; | |
984 | intinfo.delay = | |
985 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
986 | intinfo.count = | |
987 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
988 | if (copy_to_user | |
989 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
990 | return -EFAULT; | |
991 | return 0; | |
992 | } | |
1da177e4 | 993 | case CCISS_SETINTINFO: |
1da177e4 | 994 | { |
7c832835 BH |
995 | cciss_coalint_struct intinfo; |
996 | unsigned long flags; | |
997 | int i; | |
998 | ||
999 | if (!arg) | |
1000 | return -EINVAL; | |
1001 | if (!capable(CAP_SYS_ADMIN)) | |
1002 | return -EPERM; | |
1003 | if (copy_from_user | |
1004 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
1005 | return -EFAULT; | |
1006 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
1007 | { | |
1008 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
1009 | return -EINVAL; | |
1010 | } | |
1011 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1012 | /* Update the field, and then ring the doorbell */ | |
1013 | writel(intinfo.delay, | |
1014 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
1015 | writel(intinfo.count, | |
1016 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
1017 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
1018 | ||
1019 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1020 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
1021 | & CFGTBL_ChangeReq)) | |
1022 | break; | |
1023 | /* delay and try again */ | |
1024 | udelay(1000); | |
1025 | } | |
1026 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1027 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1028 | return -EAGAIN; | |
1029 | return 0; | |
1da177e4 | 1030 | } |
1da177e4 | 1031 | case CCISS_GETNODENAME: |
7c832835 BH |
1032 | { |
1033 | NodeName_type NodeName; | |
1034 | int i; | |
1035 | ||
1036 | if (!arg) | |
1037 | return -EINVAL; | |
1038 | for (i = 0; i < 16; i++) | |
1039 | NodeName[i] = | |
1040 | readb(&host->cfgtable->ServerName[i]); | |
1041 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
1042 | return -EFAULT; | |
1043 | return 0; | |
1044 | } | |
1da177e4 | 1045 | case CCISS_SETNODENAME: |
7c832835 BH |
1046 | { |
1047 | NodeName_type NodeName; | |
1048 | unsigned long flags; | |
1049 | int i; | |
1050 | ||
1051 | if (!arg) | |
1052 | return -EINVAL; | |
1053 | if (!capable(CAP_SYS_ADMIN)) | |
1054 | return -EPERM; | |
1055 | ||
1056 | if (copy_from_user | |
1057 | (NodeName, argp, sizeof(NodeName_type))) | |
1058 | return -EFAULT; | |
1059 | ||
1060 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1061 | ||
1062 | /* Update the field, and then ring the doorbell */ | |
1063 | for (i = 0; i < 16; i++) | |
1064 | writeb(NodeName[i], | |
1065 | &host->cfgtable->ServerName[i]); | |
1066 | ||
1067 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
1068 | ||
1069 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1070 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
1071 | & CFGTBL_ChangeReq)) | |
1072 | break; | |
1073 | /* delay and try again */ | |
1074 | udelay(1000); | |
1075 | } | |
1076 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1077 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1078 | return -EAGAIN; | |
1079 | return 0; | |
1080 | } | |
1da177e4 LT |
1081 | |
1082 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
1083 | { |
1084 | Heartbeat_type heartbeat; | |
1085 | ||
1086 | if (!arg) | |
1087 | return -EINVAL; | |
1088 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
1089 | if (copy_to_user | |
1090 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
1091 | return -EFAULT; | |
1092 | return 0; | |
1093 | } | |
1da177e4 | 1094 | case CCISS_GETBUSTYPES: |
7c832835 BH |
1095 | { |
1096 | BusTypes_type BusTypes; | |
1097 | ||
1098 | if (!arg) | |
1099 | return -EINVAL; | |
1100 | BusTypes = readl(&host->cfgtable->BusTypes); | |
1101 | if (copy_to_user | |
1102 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
1103 | return -EFAULT; | |
1104 | return 0; | |
1105 | } | |
1da177e4 | 1106 | case CCISS_GETFIRMVER: |
7c832835 BH |
1107 | { |
1108 | FirmwareVer_type firmware; | |
1da177e4 | 1109 | |
7c832835 BH |
1110 | if (!arg) |
1111 | return -EINVAL; | |
1112 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 1113 | |
7c832835 BH |
1114 | if (copy_to_user |
1115 | (argp, firmware, sizeof(FirmwareVer_type))) | |
1116 | return -EFAULT; | |
1117 | return 0; | |
1118 | } | |
1119 | case CCISS_GETDRIVVER: | |
1120 | { | |
1121 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 1122 | |
7c832835 BH |
1123 | if (!arg) |
1124 | return -EINVAL; | |
1da177e4 | 1125 | |
7c832835 BH |
1126 | if (copy_to_user |
1127 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
1128 | return -EFAULT; | |
1129 | return 0; | |
1130 | } | |
1da177e4 | 1131 | |
6ae5ce8e MM |
1132 | case CCISS_DEREGDISK: |
1133 | case CCISS_REGNEWD: | |
1da177e4 | 1134 | case CCISS_REVALIDVOLS: |
6ae5ce8e | 1135 | return rebuild_lun_table(host, 0); |
7c832835 BH |
1136 | |
1137 | case CCISS_GETLUNINFO:{ | |
1138 | LogvolInfo_struct luninfo; | |
1139 | ||
1140 | luninfo.LunID = drv->LunID; | |
1141 | luninfo.num_opens = drv->usage_count; | |
1142 | luninfo.num_parts = 0; | |
1143 | if (copy_to_user(argp, &luninfo, | |
1144 | sizeof(LogvolInfo_struct))) | |
1145 | return -EFAULT; | |
1146 | return 0; | |
1147 | } | |
1da177e4 | 1148 | case CCISS_PASSTHRU: |
1da177e4 | 1149 | { |
7c832835 BH |
1150 | IOCTL_Command_struct iocommand; |
1151 | CommandList_struct *c; | |
1152 | char *buff = NULL; | |
1153 | u64bit temp64; | |
1154 | unsigned long flags; | |
6e9a4738 | 1155 | DECLARE_COMPLETION_ONSTACK(wait); |
1da177e4 | 1156 | |
7c832835 BH |
1157 | if (!arg) |
1158 | return -EINVAL; | |
1da177e4 | 1159 | |
7c832835 BH |
1160 | if (!capable(CAP_SYS_RAWIO)) |
1161 | return -EPERM; | |
1da177e4 | 1162 | |
7c832835 BH |
1163 | if (copy_from_user |
1164 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
1165 | return -EFAULT; | |
1166 | if ((iocommand.buf_size < 1) && | |
1167 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
1168 | return -EINVAL; | |
1169 | } | |
1170 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
1171 | /* Check kmalloc limits */ | |
1172 | if (iocommand.buf_size > 128000) | |
1173 | return -EINVAL; | |
1174 | #endif | |
1175 | if (iocommand.buf_size > 0) { | |
1176 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
1177 | if (buff == NULL) | |
1178 | return -EFAULT; | |
1179 | } | |
1180 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
1181 | /* Copy the data into the buffer we created */ | |
1182 | if (copy_from_user | |
1183 | (buff, iocommand.buf, iocommand.buf_size)) { | |
1184 | kfree(buff); | |
1185 | return -EFAULT; | |
1186 | } | |
1187 | } else { | |
1188 | memset(buff, 0, iocommand.buf_size); | |
1189 | } | |
1190 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1191 | kfree(buff); | |
1192 | return -ENOMEM; | |
1193 | } | |
1194 | // Fill in the command type | |
1195 | c->cmd_type = CMD_IOCTL_PEND; | |
1196 | // Fill in Command Header | |
1197 | c->Header.ReplyQueue = 0; // unused in simple mode | |
1198 | if (iocommand.buf_size > 0) // buffer to fill | |
1199 | { | |
1200 | c->Header.SGList = 1; | |
1201 | c->Header.SGTotal = 1; | |
1202 | } else // no buffers to fill | |
1203 | { | |
1204 | c->Header.SGList = 0; | |
1205 | c->Header.SGTotal = 0; | |
1206 | } | |
1207 | c->Header.LUN = iocommand.LUN_info; | |
1208 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag | |
1da177e4 | 1209 | |
7c832835 BH |
1210 | // Fill in Request block |
1211 | c->Request = iocommand.Request; | |
1da177e4 | 1212 | |
7c832835 BH |
1213 | // Fill in the scatter gather information |
1214 | if (iocommand.buf_size > 0) { | |
1215 | temp64.val = pci_map_single(host->pdev, buff, | |
1216 | iocommand.buf_size, | |
1217 | PCI_DMA_BIDIRECTIONAL); | |
1218 | c->SG[0].Addr.lower = temp64.val32.lower; | |
1219 | c->SG[0].Addr.upper = temp64.val32.upper; | |
1220 | c->SG[0].Len = iocommand.buf_size; | |
1221 | c->SG[0].Ext = 0; // we are not chaining | |
1222 | } | |
1223 | c->waiting = &wait; | |
1224 | ||
1225 | /* Put the request on the tail of the request queue */ | |
1226 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1227 | addQ(&host->reqQ, c); | |
1228 | host->Qdepth++; | |
1229 | start_io(host); | |
1230 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1231 | ||
1232 | wait_for_completion(&wait); | |
1233 | ||
1234 | /* unlock the buffers from DMA */ | |
1235 | temp64.val32.lower = c->SG[0].Addr.lower; | |
1236 | temp64.val32.upper = c->SG[0].Addr.upper; | |
1237 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
1238 | iocommand.buf_size, | |
1239 | PCI_DMA_BIDIRECTIONAL); | |
1240 | ||
0a9279cc MM |
1241 | check_ioctl_unit_attention(host, c); |
1242 | ||
7c832835 BH |
1243 | /* Copy the error information out */ |
1244 | iocommand.error_info = *(c->err_info); | |
1245 | if (copy_to_user | |
1246 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
1247 | kfree(buff); | |
1da177e4 LT |
1248 | cmd_free(host, c, 0); |
1249 | return -EFAULT; | |
1250 | } | |
7c832835 BH |
1251 | |
1252 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
1253 | /* Copy the data out of the buffer we created */ | |
1254 | if (copy_to_user | |
1255 | (iocommand.buf, buff, iocommand.buf_size)) { | |
1256 | kfree(buff); | |
1257 | cmd_free(host, c, 0); | |
1258 | return -EFAULT; | |
1259 | } | |
1260 | } | |
1261 | kfree(buff); | |
1262 | cmd_free(host, c, 0); | |
1263 | return 0; | |
1da177e4 | 1264 | } |
7c832835 BH |
1265 | case CCISS_BIG_PASSTHRU:{ |
1266 | BIG_IOCTL_Command_struct *ioc; | |
1267 | CommandList_struct *c; | |
1268 | unsigned char **buff = NULL; | |
1269 | int *buff_size = NULL; | |
1270 | u64bit temp64; | |
1271 | unsigned long flags; | |
1272 | BYTE sg_used = 0; | |
1273 | int status = 0; | |
1274 | int i; | |
6e9a4738 | 1275 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1276 | __u32 left; |
1277 | __u32 sz; | |
1278 | BYTE __user *data_ptr; | |
1279 | ||
1280 | if (!arg) | |
1281 | return -EINVAL; | |
1282 | if (!capable(CAP_SYS_RAWIO)) | |
1283 | return -EPERM; | |
1284 | ioc = (BIG_IOCTL_Command_struct *) | |
1285 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1286 | if (!ioc) { | |
1287 | status = -ENOMEM; | |
1288 | goto cleanup1; | |
1289 | } | |
1290 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1291 | status = -EFAULT; | |
1292 | goto cleanup1; | |
1293 | } | |
1294 | if ((ioc->buf_size < 1) && | |
1295 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1296 | status = -EINVAL; |
1297 | goto cleanup1; | |
7c832835 BH |
1298 | } |
1299 | /* Check kmalloc limits using all SGs */ | |
1300 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1301 | status = -EINVAL; | |
1302 | goto cleanup1; | |
1303 | } | |
1304 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1305 | status = -EINVAL; | |
1306 | goto cleanup1; | |
1307 | } | |
1308 | buff = | |
1309 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1310 | if (!buff) { | |
1da177e4 LT |
1311 | status = -ENOMEM; |
1312 | goto cleanup1; | |
1313 | } | |
5cbded58 | 1314 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
7c832835 BH |
1315 | GFP_KERNEL); |
1316 | if (!buff_size) { | |
1317 | status = -ENOMEM; | |
1318 | goto cleanup1; | |
1319 | } | |
1320 | left = ioc->buf_size; | |
1321 | data_ptr = ioc->buf; | |
1322 | while (left) { | |
1323 | sz = (left > | |
1324 | ioc->malloc_size) ? ioc-> | |
1325 | malloc_size : left; | |
1326 | buff_size[sg_used] = sz; | |
1327 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1328 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1329 | status = -ENOMEM; |
15534d38 JA |
1330 | goto cleanup1; |
1331 | } | |
7c832835 BH |
1332 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1333 | if (copy_from_user | |
1334 | (buff[sg_used], data_ptr, sz)) { | |
f7108f91 | 1335 | status = -EFAULT; |
7c832835 BH |
1336 | goto cleanup1; |
1337 | } | |
1338 | } else { | |
1339 | memset(buff[sg_used], 0, sz); | |
1340 | } | |
1341 | left -= sz; | |
1342 | data_ptr += sz; | |
1343 | sg_used++; | |
1344 | } | |
1345 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1346 | status = -ENOMEM; | |
1347 | goto cleanup1; | |
1348 | } | |
1349 | c->cmd_type = CMD_IOCTL_PEND; | |
1350 | c->Header.ReplyQueue = 0; | |
1351 | ||
1352 | if (ioc->buf_size > 0) { | |
1353 | c->Header.SGList = sg_used; | |
1354 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1355 | } else { |
7c832835 BH |
1356 | c->Header.SGList = 0; |
1357 | c->Header.SGTotal = 0; | |
1da177e4 | 1358 | } |
7c832835 BH |
1359 | c->Header.LUN = ioc->LUN_info; |
1360 | c->Header.Tag.lower = c->busaddr; | |
1361 | ||
1362 | c->Request = ioc->Request; | |
1363 | if (ioc->buf_size > 0) { | |
1364 | int i; | |
1365 | for (i = 0; i < sg_used; i++) { | |
1366 | temp64.val = | |
1367 | pci_map_single(host->pdev, buff[i], | |
1368 | buff_size[i], | |
1369 | PCI_DMA_BIDIRECTIONAL); | |
1370 | c->SG[i].Addr.lower = | |
1371 | temp64.val32.lower; | |
1372 | c->SG[i].Addr.upper = | |
1373 | temp64.val32.upper; | |
1374 | c->SG[i].Len = buff_size[i]; | |
1375 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1376 | } | |
1377 | } | |
1378 | c->waiting = &wait; | |
1379 | /* Put the request on the tail of the request queue */ | |
1380 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1381 | addQ(&host->reqQ, c); | |
1382 | host->Qdepth++; | |
1383 | start_io(host); | |
1384 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1385 | wait_for_completion(&wait); | |
1386 | /* unlock the buffers from DMA */ | |
1387 | for (i = 0; i < sg_used; i++) { | |
1388 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1389 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1390 | pci_unmap_single(host->pdev, | |
1391 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1392 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1393 | } |
0a9279cc | 1394 | check_ioctl_unit_attention(host, c); |
7c832835 BH |
1395 | /* Copy the error information out */ |
1396 | ioc->error_info = *(c->err_info); | |
1397 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1398 | cmd_free(host, c, 0); | |
1399 | status = -EFAULT; | |
1400 | goto cleanup1; | |
1401 | } | |
1402 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1403 | /* Copy the data out of the buffer we created */ | |
1404 | BYTE __user *ptr = ioc->buf; | |
1405 | for (i = 0; i < sg_used; i++) { | |
1406 | if (copy_to_user | |
1407 | (ptr, buff[i], buff_size[i])) { | |
1408 | cmd_free(host, c, 0); | |
1409 | status = -EFAULT; | |
1410 | goto cleanup1; | |
1411 | } | |
1412 | ptr += buff_size[i]; | |
1da177e4 | 1413 | } |
1da177e4 | 1414 | } |
7c832835 BH |
1415 | cmd_free(host, c, 0); |
1416 | status = 0; | |
1417 | cleanup1: | |
1418 | if (buff) { | |
1419 | for (i = 0; i < sg_used; i++) | |
1420 | kfree(buff[i]); | |
1421 | kfree(buff); | |
1422 | } | |
1423 | kfree(buff_size); | |
1424 | kfree(ioc); | |
1425 | return status; | |
1da177e4 | 1426 | } |
03bbfee5 MMOD |
1427 | |
1428 | /* scsi_cmd_ioctl handles these, below, though some are not */ | |
1429 | /* very meaningful for cciss. SG_IO is the main one people want. */ | |
1430 | ||
1431 | case SG_GET_VERSION_NUM: | |
1432 | case SG_SET_TIMEOUT: | |
1433 | case SG_GET_TIMEOUT: | |
1434 | case SG_GET_RESERVED_SIZE: | |
1435 | case SG_SET_RESERVED_SIZE: | |
1436 | case SG_EMULATED_HOST: | |
1437 | case SG_IO: | |
1438 | case SCSI_IOCTL_SEND_COMMAND: | |
ef7822c2 | 1439 | return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
03bbfee5 MMOD |
1440 | |
1441 | /* scsi_cmd_ioctl would normally handle these, below, but */ | |
1442 | /* they aren't a good fit for cciss, as CD-ROMs are */ | |
1443 | /* not supported, and we don't have any bus/target/lun */ | |
1444 | /* which we present to the kernel. */ | |
1445 | ||
1446 | case CDROM_SEND_PACKET: | |
1447 | case CDROMCLOSETRAY: | |
1448 | case CDROMEJECT: | |
1449 | case SCSI_IOCTL_GET_IDLUN: | |
1450 | case SCSI_IOCTL_GET_BUS_NUMBER: | |
1da177e4 LT |
1451 | default: |
1452 | return -ENOTTY; | |
1453 | } | |
1da177e4 LT |
1454 | } |
1455 | ||
7b30f092 JA |
1456 | static void cciss_check_queues(ctlr_info_t *h) |
1457 | { | |
1458 | int start_queue = h->next_to_run; | |
1459 | int i; | |
1460 | ||
1461 | /* check to see if we have maxed out the number of commands that can | |
1462 | * be placed on the queue. If so then exit. We do this check here | |
1463 | * in case the interrupt we serviced was from an ioctl and did not | |
1464 | * free any new commands. | |
1465 | */ | |
f880632f | 1466 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1467 | return; |
1468 | ||
1469 | /* We have room on the queue for more commands. Now we need to queue | |
1470 | * them up. We will also keep track of the next queue to run so | |
1471 | * that every queue gets a chance to be started first. | |
1472 | */ | |
1473 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1474 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1475 | /* make sure the disk has been added and the drive is real | |
1476 | * because this can be called from the middle of init_one. | |
1477 | */ | |
1478 | if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads)) | |
1479 | continue; | |
1480 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1481 | ||
1482 | /* check to see if we have maxed out the number of commands | |
1483 | * that can be placed on the queue. | |
1484 | */ | |
f880632f | 1485 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1486 | if (curr_queue == start_queue) { |
1487 | h->next_to_run = | |
1488 | (start_queue + 1) % (h->highest_lun + 1); | |
1489 | break; | |
1490 | } else { | |
1491 | h->next_to_run = curr_queue; | |
1492 | break; | |
1493 | } | |
7b30f092 JA |
1494 | } |
1495 | } | |
1496 | } | |
1497 | ||
ca1e0484 MM |
1498 | static void cciss_softirq_done(struct request *rq) |
1499 | { | |
1500 | CommandList_struct *cmd = rq->completion_data; | |
1501 | ctlr_info_t *h = hba[cmd->ctlr]; | |
1502 | unsigned long flags; | |
1503 | u64bit temp64; | |
1504 | int i, ddir; | |
1505 | ||
1506 | if (cmd->Request.Type.Direction == XFER_READ) | |
1507 | ddir = PCI_DMA_FROMDEVICE; | |
1508 | else | |
1509 | ddir = PCI_DMA_TODEVICE; | |
1510 | ||
1511 | /* command did not need to be retried */ | |
1512 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1513 | for (i = 0; i < cmd->Header.SGList; i++) { |
ca1e0484 MM |
1514 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
1515 | temp64.val32.upper = cmd->SG[i].Addr.upper; | |
1516 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); | |
1517 | } | |
1518 | ||
ca1e0484 MM |
1519 | #ifdef CCISS_DEBUG |
1520 | printk("Done with %p\n", rq); | |
7c832835 | 1521 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1522 | |
c3a4d78c | 1523 | /* set the residual count for pc requests */ |
ac44e5b2 | 1524 | if (blk_pc_request(rq)) |
c3a4d78c | 1525 | rq->resid_len = cmd->err_info->ResidualCnt; |
ac44e5b2 | 1526 | |
c3a4d78c | 1527 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
3daeea29 | 1528 | |
ca1e0484 | 1529 | spin_lock_irqsave(&h->lock, flags); |
7c832835 | 1530 | cmd_free(h, cmd, 1); |
7b30f092 | 1531 | cciss_check_queues(h); |
ca1e0484 MM |
1532 | spin_unlock_irqrestore(&h->lock, flags); |
1533 | } | |
1534 | ||
b57695fe | 1535 | static void log_unit_to_scsi3addr(ctlr_info_t *h, unsigned char scsi3addr[], |
1536 | uint32_t log_unit) | |
1537 | { | |
1538 | log_unit = h->drv[log_unit].LunID & 0x03fff; | |
1539 | memset(&scsi3addr[4], 0, 4); | |
1540 | memcpy(&scsi3addr[0], &log_unit, 4); | |
1541 | scsi3addr[3] |= 0x40; | |
1542 | } | |
1543 | ||
7fe06326 AP |
1544 | /* This function gets the SCSI vendor, model, and revision of a logical drive |
1545 | * via the inquiry page 0. Model, vendor, and rev are set to empty strings if | |
1546 | * they cannot be read. | |
1547 | */ | |
1548 | static void cciss_get_device_descr(int ctlr, int logvol, int withirq, | |
1549 | char *vendor, char *model, char *rev) | |
1550 | { | |
1551 | int rc; | |
1552 | InquiryData_struct *inq_buf; | |
b57695fe | 1553 | unsigned char scsi3addr[8]; |
7fe06326 AP |
1554 | |
1555 | *vendor = '\0'; | |
1556 | *model = '\0'; | |
1557 | *rev = '\0'; | |
1558 | ||
1559 | inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
1560 | if (!inq_buf) | |
1561 | return; | |
1562 | ||
b57695fe | 1563 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7fe06326 AP |
1564 | if (withirq) |
1565 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buf, | |
b57695fe | 1566 | sizeof(InquiryData_struct), 0, |
1567 | scsi3addr, TYPE_CMD); | |
7fe06326 AP |
1568 | else |
1569 | rc = sendcmd(CISS_INQUIRY, ctlr, inq_buf, | |
b57695fe | 1570 | sizeof(InquiryData_struct), 0, |
1571 | scsi3addr, TYPE_CMD); | |
7fe06326 AP |
1572 | if (rc == IO_OK) { |
1573 | memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); | |
1574 | vendor[VENDOR_LEN] = '\0'; | |
1575 | memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); | |
1576 | model[MODEL_LEN] = '\0'; | |
1577 | memcpy(rev, &inq_buf->data_byte[32], REV_LEN); | |
1578 | rev[REV_LEN] = '\0'; | |
1579 | } | |
1580 | ||
1581 | kfree(inq_buf); | |
1582 | return; | |
1583 | } | |
1584 | ||
a72da29b MM |
1585 | /* This function gets the serial number of a logical drive via |
1586 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial | |
1587 | * number cannot be had, for whatever reason, 16 bytes of 0xff | |
1588 | * are returned instead. | |
1589 | */ | |
1590 | static void cciss_get_serial_no(int ctlr, int logvol, int withirq, | |
1591 | unsigned char *serial_no, int buflen) | |
1592 | { | |
1593 | #define PAGE_83_INQ_BYTES 64 | |
1594 | int rc; | |
1595 | unsigned char *buf; | |
b57695fe | 1596 | unsigned char scsi3addr[8]; |
a72da29b MM |
1597 | |
1598 | if (buflen > 16) | |
1599 | buflen = 16; | |
1600 | memset(serial_no, 0xff, buflen); | |
1601 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); | |
1602 | if (!buf) | |
1603 | return; | |
1604 | memset(serial_no, 0, buflen); | |
b57695fe | 1605 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
a72da29b MM |
1606 | if (withirq) |
1607 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf, | |
b57695fe | 1608 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
a72da29b MM |
1609 | else |
1610 | rc = sendcmd(CISS_INQUIRY, ctlr, buf, | |
b57695fe | 1611 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
a72da29b MM |
1612 | if (rc == IO_OK) |
1613 | memcpy(serial_no, &buf[8], buflen); | |
1614 | kfree(buf); | |
1615 | return; | |
1616 | } | |
1617 | ||
6ae5ce8e MM |
1618 | static void cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, |
1619 | int drv_index) | |
1620 | { | |
1621 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); | |
1622 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); | |
1623 | disk->major = h->major; | |
1624 | disk->first_minor = drv_index << NWD_SHIFT; | |
1625 | disk->fops = &cciss_fops; | |
1626 | disk->private_data = &h->drv[drv_index]; | |
7fe06326 | 1627 | disk->driverfs_dev = &h->drv[drv_index].dev; |
6ae5ce8e MM |
1628 | |
1629 | /* Set up queue information */ | |
1630 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); | |
1631 | ||
1632 | /* This is a hardware imposed limit. */ | |
1633 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); | |
1634 | ||
1635 | /* This is a limit in the driver and could be eliminated. */ | |
1636 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); | |
1637 | ||
1638 | blk_queue_max_sectors(disk->queue, h->cciss_max_sectors); | |
1639 | ||
1640 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); | |
1641 | ||
1642 | disk->queue->queuedata = h; | |
1643 | ||
e1defc4f MP |
1644 | blk_queue_logical_block_size(disk->queue, |
1645 | h->drv[drv_index].block_size); | |
6ae5ce8e MM |
1646 | |
1647 | /* Make sure all queue data is written out before */ | |
1648 | /* setting h->drv[drv_index].queue, as setting this */ | |
1649 | /* allows the interrupt handler to start the queue */ | |
1650 | wmb(); | |
1651 | h->drv[drv_index].queue = disk->queue; | |
1652 | add_disk(disk); | |
1653 | } | |
1654 | ||
ddd47442 | 1655 | /* This function will check the usage_count of the drive to be updated/added. |
a72da29b MM |
1656 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
1657 | * the drive's capacity, geometry, or serial number has changed, | |
1658 | * then the drive information will be updated and the disk will be | |
1659 | * re-registered with the kernel. If these conditions don't hold, | |
1660 | * then it will be left alone for the next reboot. The exception to this | |
1661 | * is disk 0 which will always be left registered with the kernel since it | |
1662 | * is also the controller node. Any changes to disk 0 will show up on | |
1663 | * the next reboot. | |
7c832835 | 1664 | */ |
6ae5ce8e | 1665 | static void cciss_update_drive_info(int ctlr, int drv_index, int first_time) |
7c832835 | 1666 | { |
ddd47442 MM |
1667 | ctlr_info_t *h = hba[ctlr]; |
1668 | struct gendisk *disk; | |
ddd47442 MM |
1669 | InquiryData_struct *inq_buff = NULL; |
1670 | unsigned int block_size; | |
00988a35 | 1671 | sector_t total_size; |
ddd47442 MM |
1672 | unsigned long flags = 0; |
1673 | int ret = 0; | |
a72da29b | 1674 | drive_info_struct *drvinfo; |
6ae5ce8e | 1675 | int was_only_controller_node; |
a72da29b MM |
1676 | |
1677 | /* Get information about the disk and modify the driver structure */ | |
1678 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
1679 | drvinfo = kmalloc(sizeof(*drvinfo), GFP_KERNEL); | |
1680 | if (inq_buff == NULL || drvinfo == NULL) | |
1681 | goto mem_msg; | |
1682 | ||
6ae5ce8e MM |
1683 | /* See if we're trying to update the "controller node" |
1684 | * this will happen the when the first logical drive gets | |
1685 | * created by ACU. | |
1686 | */ | |
1687 | was_only_controller_node = (drv_index == 0 && | |
1688 | h->drv[0].raid_level == -1); | |
1689 | ||
a72da29b MM |
1690 | /* testing to see if 16-byte CDBs are already being used */ |
1691 | if (h->cciss_read == CCISS_READ_16) { | |
1692 | cciss_read_capacity_16(h->ctlr, drv_index, 1, | |
1693 | &total_size, &block_size); | |
1694 | ||
1695 | } else { | |
1696 | cciss_read_capacity(ctlr, drv_index, 1, | |
1697 | &total_size, &block_size); | |
1698 | ||
1699 | /* if read_capacity returns all F's this volume is >2TB */ | |
1700 | /* in size so we switch to 16-byte CDB's for all */ | |
1701 | /* read/write ops */ | |
1702 | if (total_size == 0xFFFFFFFFULL) { | |
1703 | cciss_read_capacity_16(ctlr, drv_index, 1, | |
1704 | &total_size, &block_size); | |
1705 | h->cciss_read = CCISS_READ_16; | |
1706 | h->cciss_write = CCISS_WRITE_16; | |
1707 | } else { | |
1708 | h->cciss_read = CCISS_READ_10; | |
1709 | h->cciss_write = CCISS_WRITE_10; | |
1710 | } | |
1711 | } | |
1712 | ||
1713 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, | |
1714 | inq_buff, drvinfo); | |
1715 | drvinfo->block_size = block_size; | |
1716 | drvinfo->nr_blocks = total_size + 1; | |
1717 | ||
7fe06326 AP |
1718 | cciss_get_device_descr(ctlr, drv_index, 1, drvinfo->vendor, |
1719 | drvinfo->model, drvinfo->rev); | |
a72da29b MM |
1720 | cciss_get_serial_no(ctlr, drv_index, 1, drvinfo->serial_no, |
1721 | sizeof(drvinfo->serial_no)); | |
1722 | ||
1723 | /* Is it the same disk we already know, and nothing's changed? */ | |
1724 | if (h->drv[drv_index].raid_level != -1 && | |
1725 | ((memcmp(drvinfo->serial_no, | |
1726 | h->drv[drv_index].serial_no, 16) == 0) && | |
1727 | drvinfo->block_size == h->drv[drv_index].block_size && | |
1728 | drvinfo->nr_blocks == h->drv[drv_index].nr_blocks && | |
1729 | drvinfo->heads == h->drv[drv_index].heads && | |
1730 | drvinfo->sectors == h->drv[drv_index].sectors && | |
6ae5ce8e | 1731 | drvinfo->cylinders == h->drv[drv_index].cylinders)) |
a72da29b MM |
1732 | /* The disk is unchanged, nothing to update */ |
1733 | goto freeret; | |
a72da29b | 1734 | |
6ae5ce8e MM |
1735 | /* If we get here it's not the same disk, or something's changed, |
1736 | * so we need to * deregister it, and re-register it, if it's not | |
1737 | * in use. | |
1738 | * If the disk already exists then deregister it before proceeding | |
1739 | * (unless it's the first disk (for the controller node). | |
1740 | */ | |
a72da29b MM |
1741 | if (h->drv[drv_index].raid_level != -1 && drv_index != 0) { |
1742 | printk(KERN_WARNING "disk %d has changed.\n", drv_index); | |
ddd47442 MM |
1743 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
1744 | h->drv[drv_index].busy_configuring = 1; | |
1745 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
e14ac670 | 1746 | |
6ae5ce8e MM |
1747 | /* deregister_disk sets h->drv[drv_index].queue = NULL |
1748 | * which keeps the interrupt handler from starting | |
1749 | * the queue. | |
1750 | */ | |
a0ea8622 | 1751 | ret = deregister_disk(h, drv_index, 0); |
ddd47442 MM |
1752 | h->drv[drv_index].busy_configuring = 0; |
1753 | } | |
1754 | ||
1755 | /* If the disk is in use return */ | |
1756 | if (ret) | |
a72da29b MM |
1757 | goto freeret; |
1758 | ||
6ae5ce8e MM |
1759 | /* Save the new information from cciss_geometry_inquiry |
1760 | * and serial number inquiry. | |
1761 | */ | |
a72da29b MM |
1762 | h->drv[drv_index].block_size = drvinfo->block_size; |
1763 | h->drv[drv_index].nr_blocks = drvinfo->nr_blocks; | |
1764 | h->drv[drv_index].heads = drvinfo->heads; | |
1765 | h->drv[drv_index].sectors = drvinfo->sectors; | |
1766 | h->drv[drv_index].cylinders = drvinfo->cylinders; | |
1767 | h->drv[drv_index].raid_level = drvinfo->raid_level; | |
1768 | memcpy(h->drv[drv_index].serial_no, drvinfo->serial_no, 16); | |
7fe06326 AP |
1769 | memcpy(h->drv[drv_index].vendor, drvinfo->vendor, VENDOR_LEN + 1); |
1770 | memcpy(h->drv[drv_index].model, drvinfo->model, MODEL_LEN + 1); | |
1771 | memcpy(h->drv[drv_index].rev, drvinfo->rev, REV_LEN + 1); | |
ddd47442 MM |
1772 | |
1773 | ++h->num_luns; | |
1774 | disk = h->gendisk[drv_index]; | |
1775 | set_capacity(disk, h->drv[drv_index].nr_blocks); | |
1776 | ||
6ae5ce8e MM |
1777 | /* If it's not disk 0 (drv_index != 0) |
1778 | * or if it was disk 0, but there was previously | |
1779 | * no actual corresponding configured logical drive | |
1780 | * (raid_leve == -1) then we want to update the | |
1781 | * logical drive's information. | |
1782 | */ | |
1783 | if (drv_index || first_time) | |
1784 | cciss_add_disk(h, disk, drv_index); | |
ddd47442 | 1785 | |
6ae5ce8e | 1786 | freeret: |
ddd47442 | 1787 | kfree(inq_buff); |
a72da29b | 1788 | kfree(drvinfo); |
ddd47442 | 1789 | return; |
6ae5ce8e | 1790 | mem_msg: |
ddd47442 MM |
1791 | printk(KERN_ERR "cciss: out of memory\n"); |
1792 | goto freeret; | |
1793 | } | |
1794 | ||
1795 | /* This function will find the first index of the controllers drive array | |
1796 | * that has a -1 for the raid_level and will return that index. This is | |
1797 | * where new drives will be added. If the index to be returned is greater | |
1798 | * than the highest_lun index for the controller then highest_lun is set | |
1799 | * to this new index. If there are no available indexes then -1 is returned. | |
eece695f MM |
1800 | * "controller_node" is used to know if this is a real logical drive, or just |
1801 | * the controller node, which determines if this counts towards highest_lun. | |
7c832835 | 1802 | */ |
eece695f | 1803 | static int cciss_find_free_drive_index(int ctlr, int controller_node) |
ddd47442 MM |
1804 | { |
1805 | int i; | |
1806 | ||
7c832835 BH |
1807 | for (i = 0; i < CISS_MAX_LUN; i++) { |
1808 | if (hba[ctlr]->drv[i].raid_level == -1) { | |
ddd47442 | 1809 | if (i > hba[ctlr]->highest_lun) |
eece695f MM |
1810 | if (!controller_node) |
1811 | hba[ctlr]->highest_lun = i; | |
ddd47442 MM |
1812 | return i; |
1813 | } | |
1814 | } | |
1815 | return -1; | |
1816 | } | |
1817 | ||
6ae5ce8e MM |
1818 | /* cciss_add_gendisk finds a free hba[]->drv structure |
1819 | * and allocates a gendisk if needed, and sets the lunid | |
1820 | * in the drvinfo structure. It returns the index into | |
1821 | * the ->drv[] array, or -1 if none are free. | |
1822 | * is_controller_node indicates whether highest_lun should | |
1823 | * count this disk, or if it's only being added to provide | |
1824 | * a means to talk to the controller in case no logical | |
1825 | * drives have yet been configured. | |
1826 | */ | |
eece695f | 1827 | static int cciss_add_gendisk(ctlr_info_t *h, __u32 lunid, int controller_node) |
6ae5ce8e MM |
1828 | { |
1829 | int drv_index; | |
1830 | ||
eece695f | 1831 | drv_index = cciss_find_free_drive_index(h->ctlr, controller_node); |
6ae5ce8e MM |
1832 | if (drv_index == -1) |
1833 | return -1; | |
1834 | /*Check if the gendisk needs to be allocated */ | |
1835 | if (!h->gendisk[drv_index]) { | |
1836 | h->gendisk[drv_index] = | |
1837 | alloc_disk(1 << NWD_SHIFT); | |
1838 | if (!h->gendisk[drv_index]) { | |
1839 | printk(KERN_ERR "cciss%d: could not " | |
1840 | "allocate a new disk %d\n", | |
1841 | h->ctlr, drv_index); | |
1842 | return -1; | |
1843 | } | |
1844 | } | |
1845 | h->drv[drv_index].LunID = lunid; | |
7fe06326 AP |
1846 | if (cciss_create_ld_sysfs_entry(h, &h->drv[drv_index], drv_index)) |
1847 | goto err_free_disk; | |
6ae5ce8e MM |
1848 | |
1849 | /* Don't need to mark this busy because nobody */ | |
1850 | /* else knows about this disk yet to contend */ | |
1851 | /* for access to it. */ | |
1852 | h->drv[drv_index].busy_configuring = 0; | |
1853 | wmb(); | |
1854 | return drv_index; | |
7fe06326 AP |
1855 | |
1856 | err_free_disk: | |
1857 | put_disk(h->gendisk[drv_index]); | |
1858 | h->gendisk[drv_index] = NULL; | |
1859 | return -1; | |
6ae5ce8e MM |
1860 | } |
1861 | ||
1862 | /* This is for the special case of a controller which | |
1863 | * has no logical drives. In this case, we still need | |
1864 | * to register a disk so the controller can be accessed | |
1865 | * by the Array Config Utility. | |
1866 | */ | |
1867 | static void cciss_add_controller_node(ctlr_info_t *h) | |
1868 | { | |
1869 | struct gendisk *disk; | |
1870 | int drv_index; | |
1871 | ||
1872 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ | |
1873 | return; | |
1874 | ||
eece695f | 1875 | drv_index = cciss_add_gendisk(h, 0, 1); |
6ae5ce8e MM |
1876 | if (drv_index == -1) { |
1877 | printk(KERN_WARNING "cciss%d: could not " | |
1878 | "add disk 0.\n", h->ctlr); | |
1879 | return; | |
1880 | } | |
1881 | h->drv[drv_index].block_size = 512; | |
1882 | h->drv[drv_index].nr_blocks = 0; | |
1883 | h->drv[drv_index].heads = 0; | |
1884 | h->drv[drv_index].sectors = 0; | |
1885 | h->drv[drv_index].cylinders = 0; | |
1886 | h->drv[drv_index].raid_level = -1; | |
1887 | memset(h->drv[drv_index].serial_no, 0, 16); | |
1888 | disk = h->gendisk[drv_index]; | |
1889 | cciss_add_disk(h, disk, drv_index); | |
1890 | } | |
1891 | ||
ddd47442 | 1892 | /* This function will add and remove logical drives from the Logical |
d14c4ab5 | 1893 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
1894 | * so that mount points are preserved until the next reboot. This allows |
1895 | * for the removal of logical drives in the middle of the drive array | |
1896 | * without a re-ordering of those drives. | |
1897 | * INPUT | |
1898 | * h = The controller to perform the operations on | |
7c832835 | 1899 | */ |
6ae5ce8e | 1900 | static int rebuild_lun_table(ctlr_info_t *h, int first_time) |
1da177e4 | 1901 | { |
ddd47442 MM |
1902 | int ctlr = h->ctlr; |
1903 | int num_luns; | |
1904 | ReportLunData_struct *ld_buff = NULL; | |
ddd47442 MM |
1905 | int return_code; |
1906 | int listlength = 0; | |
1907 | int i; | |
1908 | int drv_found; | |
1909 | int drv_index = 0; | |
1910 | __u32 lunid = 0; | |
1da177e4 | 1911 | unsigned long flags; |
ddd47442 | 1912 | |
6ae5ce8e MM |
1913 | if (!capable(CAP_SYS_RAWIO)) |
1914 | return -EPERM; | |
1915 | ||
ddd47442 MM |
1916 | /* Set busy_configuring flag for this operation */ |
1917 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 1918 | if (h->busy_configuring) { |
ddd47442 MM |
1919 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
1920 | return -EBUSY; | |
1921 | } | |
1922 | h->busy_configuring = 1; | |
a72da29b | 1923 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
ddd47442 | 1924 | |
a72da29b MM |
1925 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
1926 | if (ld_buff == NULL) | |
1927 | goto mem_msg; | |
1928 | ||
1929 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
b57695fe | 1930 | sizeof(ReportLunData_struct), |
1931 | 0, CTLR_LUNID, TYPE_CMD); | |
ddd47442 | 1932 | |
a72da29b MM |
1933 | if (return_code == IO_OK) |
1934 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); | |
1935 | else { /* reading number of logical volumes failed */ | |
1936 | printk(KERN_WARNING "cciss: report logical volume" | |
1937 | " command failed\n"); | |
1938 | listlength = 0; | |
1939 | goto freeret; | |
1940 | } | |
1941 | ||
1942 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
1943 | if (num_luns > CISS_MAX_LUN) { | |
1944 | num_luns = CISS_MAX_LUN; | |
1945 | printk(KERN_WARNING "cciss: more luns configured" | |
1946 | " on controller than can be handled by" | |
1947 | " this driver.\n"); | |
1948 | } | |
1949 | ||
6ae5ce8e MM |
1950 | if (num_luns == 0) |
1951 | cciss_add_controller_node(h); | |
1952 | ||
1953 | /* Compare controller drive array to driver's drive array | |
1954 | * to see if any drives are missing on the controller due | |
1955 | * to action of Array Config Utility (user deletes drive) | |
1956 | * and deregister logical drives which have disappeared. | |
1957 | */ | |
a72da29b MM |
1958 | for (i = 0; i <= h->highest_lun; i++) { |
1959 | int j; | |
1960 | drv_found = 0; | |
d8a0be6a SC |
1961 | |
1962 | /* skip holes in the array from already deleted drives */ | |
1963 | if (h->drv[i].raid_level == -1) | |
1964 | continue; | |
1965 | ||
a72da29b MM |
1966 | for (j = 0; j < num_luns; j++) { |
1967 | memcpy(&lunid, &ld_buff->LUN[j][0], 4); | |
1968 | lunid = le32_to_cpu(lunid); | |
1969 | if (h->drv[i].LunID == lunid) { | |
1970 | drv_found = 1; | |
1971 | break; | |
1972 | } | |
1973 | } | |
1974 | if (!drv_found) { | |
1975 | /* Deregister it from the OS, it's gone. */ | |
1976 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
1977 | h->drv[i].busy_configuring = 1; | |
1978 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
a0ea8622 | 1979 | return_code = deregister_disk(h, i, 1); |
7fe06326 | 1980 | cciss_destroy_ld_sysfs_entry(&h->drv[i]); |
a72da29b | 1981 | h->drv[i].busy_configuring = 0; |
ddd47442 | 1982 | } |
a72da29b | 1983 | } |
ddd47442 | 1984 | |
a72da29b MM |
1985 | /* Compare controller drive array to driver's drive array. |
1986 | * Check for updates in the drive information and any new drives | |
1987 | * on the controller due to ACU adding logical drives, or changing | |
1988 | * a logical drive's size, etc. Reregister any new/changed drives | |
1989 | */ | |
1990 | for (i = 0; i < num_luns; i++) { | |
1991 | int j; | |
ddd47442 | 1992 | |
a72da29b | 1993 | drv_found = 0; |
ddd47442 | 1994 | |
a72da29b MM |
1995 | memcpy(&lunid, &ld_buff->LUN[i][0], 4); |
1996 | lunid = le32_to_cpu(lunid); | |
ddd47442 | 1997 | |
a72da29b MM |
1998 | /* Find if the LUN is already in the drive array |
1999 | * of the driver. If so then update its info | |
2000 | * if not in use. If it does not exist then find | |
2001 | * the first free index and add it. | |
2002 | */ | |
2003 | for (j = 0; j <= h->highest_lun; j++) { | |
2004 | if (h->drv[j].raid_level != -1 && | |
2005 | h->drv[j].LunID == lunid) { | |
2006 | drv_index = j; | |
2007 | drv_found = 1; | |
2008 | break; | |
ddd47442 | 2009 | } |
a72da29b | 2010 | } |
ddd47442 | 2011 | |
a72da29b MM |
2012 | /* check if the drive was found already in the array */ |
2013 | if (!drv_found) { | |
eece695f | 2014 | drv_index = cciss_add_gendisk(h, lunid, 0); |
a72da29b MM |
2015 | if (drv_index == -1) |
2016 | goto freeret; | |
a72da29b | 2017 | } |
6ae5ce8e | 2018 | cciss_update_drive_info(ctlr, drv_index, first_time); |
a72da29b | 2019 | } /* end for */ |
ddd47442 | 2020 | |
6ae5ce8e | 2021 | freeret: |
ddd47442 MM |
2022 | kfree(ld_buff); |
2023 | h->busy_configuring = 0; | |
2024 | /* We return -1 here to tell the ACU that we have registered/updated | |
2025 | * all of the drives that we can and to keep it from calling us | |
2026 | * additional times. | |
7c832835 | 2027 | */ |
ddd47442 | 2028 | return -1; |
6ae5ce8e | 2029 | mem_msg: |
ddd47442 | 2030 | printk(KERN_ERR "cciss: out of memory\n"); |
a72da29b | 2031 | h->busy_configuring = 0; |
ddd47442 MM |
2032 | goto freeret; |
2033 | } | |
2034 | ||
2035 | /* This function will deregister the disk and it's queue from the | |
2036 | * kernel. It must be called with the controller lock held and the | |
2037 | * drv structures busy_configuring flag set. It's parameters are: | |
2038 | * | |
2039 | * disk = This is the disk to be deregistered | |
2040 | * drv = This is the drive_info_struct associated with the disk to be | |
2041 | * deregistered. It contains information about the disk used | |
2042 | * by the driver. | |
2043 | * clear_all = This flag determines whether or not the disk information | |
2044 | * is going to be completely cleared out and the highest_lun | |
2045 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 2046 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
2047 | * the highest_lun should be left unchanged and the LunID |
2048 | * should not be cleared. | |
2049 | */ | |
a0ea8622 | 2050 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
ddd47442 MM |
2051 | int clear_all) |
2052 | { | |
799202cb | 2053 | int i; |
a0ea8622 SC |
2054 | struct gendisk *disk; |
2055 | drive_info_struct *drv; | |
1da177e4 LT |
2056 | |
2057 | if (!capable(CAP_SYS_RAWIO)) | |
2058 | return -EPERM; | |
2059 | ||
a0ea8622 SC |
2060 | drv = &h->drv[drv_index]; |
2061 | disk = h->gendisk[drv_index]; | |
2062 | ||
1da177e4 | 2063 | /* make sure logical volume is NOT is use */ |
7c832835 BH |
2064 | if (clear_all || (h->gendisk[0] == disk)) { |
2065 | if (drv->usage_count > 1) | |
2066 | return -EBUSY; | |
2067 | } else if (drv->usage_count > 0) | |
2068 | return -EBUSY; | |
1da177e4 | 2069 | |
ddd47442 MM |
2070 | /* invalidate the devices and deregister the disk. If it is disk |
2071 | * zero do not deregister it but just zero out it's values. This | |
2072 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
2073 | */ |
2074 | if (h->gendisk[0] != disk) { | |
5a9df732 AB |
2075 | struct request_queue *q = disk->queue; |
2076 | if (disk->flags & GENHD_FL_UP) | |
2077 | del_gendisk(disk); | |
2078 | if (q) { | |
2079 | blk_cleanup_queue(q); | |
2080 | /* Set drv->queue to NULL so that we do not try | |
2081 | * to call blk_start_queue on this queue in the | |
2082 | * interrupt handler | |
2083 | */ | |
2084 | drv->queue = NULL; | |
2085 | } | |
2086 | /* If clear_all is set then we are deleting the logical | |
2087 | * drive, not just refreshing its info. For drives | |
2088 | * other than disk 0 we will call put_disk. We do not | |
2089 | * do this for disk 0 as we need it to be able to | |
2090 | * configure the controller. | |
a72da29b | 2091 | */ |
5a9df732 AB |
2092 | if (clear_all){ |
2093 | /* This isn't pretty, but we need to find the | |
2094 | * disk in our array and NULL our the pointer. | |
2095 | * This is so that we will call alloc_disk if | |
2096 | * this index is used again later. | |
a72da29b | 2097 | */ |
5a9df732 | 2098 | for (i=0; i < CISS_MAX_LUN; i++){ |
a72da29b | 2099 | if (h->gendisk[i] == disk) { |
5a9df732 AB |
2100 | h->gendisk[i] = NULL; |
2101 | break; | |
799202cb | 2102 | } |
799202cb | 2103 | } |
5a9df732 | 2104 | put_disk(disk); |
ddd47442 | 2105 | } |
799202cb MM |
2106 | } else { |
2107 | set_capacity(disk, 0); | |
ddd47442 MM |
2108 | } |
2109 | ||
2110 | --h->num_luns; | |
2111 | /* zero out the disk size info */ | |
2112 | drv->nr_blocks = 0; | |
2113 | drv->block_size = 0; | |
2114 | drv->heads = 0; | |
2115 | drv->sectors = 0; | |
2116 | drv->cylinders = 0; | |
2117 | drv->raid_level = -1; /* This can be used as a flag variable to | |
2118 | * indicate that this element of the drive | |
2119 | * array is free. | |
7c832835 BH |
2120 | */ |
2121 | ||
2122 | if (clear_all) { | |
2123 | /* check to see if it was the last disk */ | |
2124 | if (drv == h->drv + h->highest_lun) { | |
2125 | /* if so, find the new hightest lun */ | |
2126 | int i, newhighest = -1; | |
a72da29b | 2127 | for (i = 0; i <= h->highest_lun; i++) { |
7c832835 | 2128 | /* if the disk has size > 0, it is available */ |
ddd47442 | 2129 | if (h->drv[i].heads) |
7c832835 BH |
2130 | newhighest = i; |
2131 | } | |
2132 | h->highest_lun = newhighest; | |
1da177e4 | 2133 | } |
ddd47442 | 2134 | |
7c832835 | 2135 | drv->LunID = 0; |
ddd47442 | 2136 | } |
e2019b58 | 2137 | return 0; |
1da177e4 | 2138 | } |
ddd47442 | 2139 | |
b57695fe | 2140 | static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, |
2141 | size_t size, __u8 page_code, unsigned char *scsi3addr, | |
2142 | int cmd_type) | |
1da177e4 | 2143 | { |
7c832835 | 2144 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
2145 | u64bit buff_dma_handle; |
2146 | int status = IO_OK; | |
2147 | ||
2148 | c->cmd_type = CMD_IOCTL_PEND; | |
2149 | c->Header.ReplyQueue = 0; | |
7c832835 | 2150 | if (buff != NULL) { |
1da177e4 | 2151 | c->Header.SGList = 1; |
7c832835 | 2152 | c->Header.SGTotal = 1; |
1da177e4 LT |
2153 | } else { |
2154 | c->Header.SGList = 0; | |
7c832835 | 2155 | c->Header.SGTotal = 0; |
1da177e4 LT |
2156 | } |
2157 | c->Header.Tag.lower = c->busaddr; | |
b57695fe | 2158 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
1da177e4 LT |
2159 | |
2160 | c->Request.Type.Type = cmd_type; | |
2161 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
2162 | switch (cmd) { |
2163 | case CISS_INQUIRY: | |
1da177e4 | 2164 | /* are we trying to read a vital product page */ |
7c832835 | 2165 | if (page_code != 0) { |
1da177e4 LT |
2166 | c->Request.CDB[1] = 0x01; |
2167 | c->Request.CDB[2] = page_code; | |
2168 | } | |
2169 | c->Request.CDBLen = 6; | |
7c832835 | 2170 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
2171 | c->Request.Type.Direction = XFER_READ; |
2172 | c->Request.Timeout = 0; | |
7c832835 BH |
2173 | c->Request.CDB[0] = CISS_INQUIRY; |
2174 | c->Request.CDB[4] = size & 0xFF; | |
2175 | break; | |
1da177e4 LT |
2176 | case CISS_REPORT_LOG: |
2177 | case CISS_REPORT_PHYS: | |
7c832835 | 2178 | /* Talking to controller so It's a physical command |
1da177e4 | 2179 | mode = 00 target = 0. Nothing to write. |
7c832835 | 2180 | */ |
1da177e4 LT |
2181 | c->Request.CDBLen = 12; |
2182 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2183 | c->Request.Type.Direction = XFER_READ; | |
2184 | c->Request.Timeout = 0; | |
2185 | c->Request.CDB[0] = cmd; | |
7c832835 | 2186 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
1da177e4 LT |
2187 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
2188 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
2189 | c->Request.CDB[9] = size & 0xFF; | |
2190 | break; | |
2191 | ||
2192 | case CCISS_READ_CAPACITY: | |
1da177e4 LT |
2193 | c->Request.CDBLen = 10; |
2194 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2195 | c->Request.Type.Direction = XFER_READ; | |
2196 | c->Request.Timeout = 0; | |
2197 | c->Request.CDB[0] = cmd; | |
7c832835 | 2198 | break; |
00988a35 | 2199 | case CCISS_READ_CAPACITY_16: |
00988a35 MMOD |
2200 | c->Request.CDBLen = 16; |
2201 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2202 | c->Request.Type.Direction = XFER_READ; | |
2203 | c->Request.Timeout = 0; | |
2204 | c->Request.CDB[0] = cmd; | |
2205 | c->Request.CDB[1] = 0x10; | |
2206 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
2207 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
2208 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
2209 | c->Request.CDB[13] = size & 0xFF; | |
2210 | c->Request.Timeout = 0; | |
2211 | c->Request.CDB[0] = cmd; | |
2212 | break; | |
1da177e4 LT |
2213 | case CCISS_CACHE_FLUSH: |
2214 | c->Request.CDBLen = 12; | |
2215 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2216 | c->Request.Type.Direction = XFER_WRITE; | |
2217 | c->Request.Timeout = 0; | |
2218 | c->Request.CDB[0] = BMIC_WRITE; | |
2219 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 2220 | break; |
88f627ae | 2221 | case TEST_UNIT_READY: |
88f627ae SC |
2222 | c->Request.CDBLen = 6; |
2223 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2224 | c->Request.Type.Direction = XFER_NONE; | |
2225 | c->Request.Timeout = 0; | |
2226 | break; | |
1da177e4 LT |
2227 | default: |
2228 | printk(KERN_WARNING | |
7c832835 | 2229 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 2230 | return IO_ERROR; |
1da177e4 LT |
2231 | } |
2232 | } else if (cmd_type == TYPE_MSG) { | |
2233 | switch (cmd) { | |
7c832835 | 2234 | case 0: /* ABORT message */ |
3da8b713 | 2235 | c->Request.CDBLen = 12; |
2236 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2237 | c->Request.Type.Direction = XFER_WRITE; | |
2238 | c->Request.Timeout = 0; | |
7c832835 BH |
2239 | c->Request.CDB[0] = cmd; /* abort */ |
2240 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 2241 | /* buff contains the tag of the command to abort */ |
2242 | memcpy(&c->Request.CDB[4], buff, 8); | |
2243 | break; | |
7c832835 | 2244 | case 1: /* RESET message */ |
88f627ae | 2245 | c->Request.CDBLen = 16; |
3da8b713 | 2246 | c->Request.Type.Attribute = ATTR_SIMPLE; |
88f627ae | 2247 | c->Request.Type.Direction = XFER_NONE; |
3da8b713 | 2248 | c->Request.Timeout = 0; |
2249 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 | 2250 | c->Request.CDB[0] = cmd; /* reset */ |
88f627ae | 2251 | c->Request.CDB[1] = 0x03; /* reset a target */ |
00988a35 | 2252 | break; |
1da177e4 LT |
2253 | case 3: /* No-Op message */ |
2254 | c->Request.CDBLen = 1; | |
2255 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2256 | c->Request.Type.Direction = XFER_WRITE; | |
2257 | c->Request.Timeout = 0; | |
2258 | c->Request.CDB[0] = cmd; | |
2259 | break; | |
2260 | default: | |
2261 | printk(KERN_WARNING | |
7c832835 | 2262 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
2263 | return IO_ERROR; |
2264 | } | |
2265 | } else { | |
2266 | printk(KERN_WARNING | |
7c832835 | 2267 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
2268 | return IO_ERROR; |
2269 | } | |
2270 | /* Fill in the scatter gather information */ | |
2271 | if (size > 0) { | |
2272 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
2273 | buff, size, |
2274 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
2275 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
2276 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
2277 | c->SG[0].Len = size; | |
7c832835 | 2278 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
2279 | } |
2280 | return status; | |
2281 | } | |
7c832835 | 2282 | |
3c2ab402 | 2283 | static int check_target_status(ctlr_info_t *h, CommandList_struct *c) |
2284 | { | |
2285 | switch (c->err_info->ScsiStatus) { | |
2286 | case SAM_STAT_GOOD: | |
2287 | return IO_OK; | |
2288 | case SAM_STAT_CHECK_CONDITION: | |
2289 | switch (0xf & c->err_info->SenseInfo[2]) { | |
2290 | case 0: return IO_OK; /* no sense */ | |
2291 | case 1: return IO_OK; /* recovered error */ | |
2292 | default: | |
2293 | printk(KERN_WARNING "cciss%d: cmd 0x%02x " | |
2294 | "check condition, sense key = 0x%02x\n", | |
2295 | h->ctlr, c->Request.CDB[0], | |
2296 | c->err_info->SenseInfo[2]); | |
2297 | } | |
2298 | break; | |
2299 | default: | |
2300 | printk(KERN_WARNING "cciss%d: cmd 0x%02x" | |
2301 | "scsi status = 0x%02x\n", h->ctlr, | |
2302 | c->Request.CDB[0], c->err_info->ScsiStatus); | |
2303 | break; | |
2304 | } | |
2305 | return IO_ERROR; | |
2306 | } | |
2307 | ||
789a424a | 2308 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 | 2309 | { |
5390cfc3 | 2310 | int return_status = IO_OK; |
7c832835 | 2311 | |
789a424a | 2312 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
2313 | return IO_OK; | |
5390cfc3 | 2314 | |
2315 | switch (c->err_info->CommandStatus) { | |
2316 | case CMD_TARGET_STATUS: | |
3c2ab402 | 2317 | return_status = check_target_status(h, c); |
5390cfc3 | 2318 | break; |
2319 | case CMD_DATA_UNDERRUN: | |
2320 | case CMD_DATA_OVERRUN: | |
2321 | /* expected for inquiry and report lun commands */ | |
2322 | break; | |
2323 | case CMD_INVALID: | |
789a424a | 2324 | printk(KERN_WARNING "cciss: cmd 0x%02x is " |
5390cfc3 | 2325 | "reported invalid\n", c->Request.CDB[0]); |
2326 | return_status = IO_ERROR; | |
2327 | break; | |
2328 | case CMD_PROTOCOL_ERR: | |
2329 | printk(KERN_WARNING "cciss: cmd 0x%02x has " | |
2330 | "protocol error \n", c->Request.CDB[0]); | |
2331 | return_status = IO_ERROR; | |
2332 | break; | |
2333 | case CMD_HARDWARE_ERR: | |
2334 | printk(KERN_WARNING "cciss: cmd 0x%02x had " | |
2335 | " hardware error\n", c->Request.CDB[0]); | |
2336 | return_status = IO_ERROR; | |
2337 | break; | |
2338 | case CMD_CONNECTION_LOST: | |
2339 | printk(KERN_WARNING "cciss: cmd 0x%02x had " | |
2340 | "connection lost\n", c->Request.CDB[0]); | |
2341 | return_status = IO_ERROR; | |
2342 | break; | |
2343 | case CMD_ABORTED: | |
2344 | printk(KERN_WARNING "cciss: cmd 0x%02x was " | |
2345 | "aborted\n", c->Request.CDB[0]); | |
2346 | return_status = IO_ERROR; | |
2347 | break; | |
2348 | case CMD_ABORT_FAILED: | |
2349 | printk(KERN_WARNING "cciss: cmd 0x%02x reports " | |
2350 | "abort failed\n", c->Request.CDB[0]); | |
2351 | return_status = IO_ERROR; | |
2352 | break; | |
2353 | case CMD_UNSOLICITED_ABORT: | |
2354 | printk(KERN_WARNING | |
2355 | "cciss%d: unsolicited abort 0x%02x\n", h->ctlr, | |
2356 | c->Request.CDB[0]); | |
789a424a | 2357 | return_status = IO_NEEDS_RETRY; |
5390cfc3 | 2358 | break; |
2359 | default: | |
2360 | printk(KERN_WARNING "cciss: cmd 0x%02x returned " | |
2361 | "unknown status %x\n", c->Request.CDB[0], | |
2362 | c->err_info->CommandStatus); | |
2363 | return_status = IO_ERROR; | |
7c832835 | 2364 | } |
789a424a | 2365 | return return_status; |
2366 | } | |
2367 | ||
2368 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, | |
2369 | int attempt_retry) | |
2370 | { | |
2371 | DECLARE_COMPLETION_ONSTACK(wait); | |
2372 | u64bit buff_dma_handle; | |
2373 | unsigned long flags; | |
2374 | int return_status = IO_OK; | |
2375 | ||
2376 | resend_cmd2: | |
2377 | c->waiting = &wait; | |
2378 | /* Put the request on the tail of the queue and send it */ | |
2379 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
2380 | addQ(&h->reqQ, c); | |
2381 | h->Qdepth++; | |
2382 | start_io(h); | |
2383 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
2384 | ||
2385 | wait_for_completion(&wait); | |
2386 | ||
2387 | if (c->err_info->CommandStatus == 0 || !attempt_retry) | |
2388 | goto command_done; | |
2389 | ||
2390 | return_status = process_sendcmd_error(h, c); | |
2391 | ||
2392 | if (return_status == IO_NEEDS_RETRY && | |
2393 | c->retry_count < MAX_CMD_RETRIES) { | |
2394 | printk(KERN_WARNING "cciss%d: retrying 0x%02x\n", h->ctlr, | |
2395 | c->Request.CDB[0]); | |
2396 | c->retry_count++; | |
2397 | /* erase the old error information */ | |
2398 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2399 | return_status = IO_OK; | |
2400 | INIT_COMPLETION(wait); | |
2401 | goto resend_cmd2; | |
2402 | } | |
5390cfc3 | 2403 | |
2404 | command_done: | |
1da177e4 | 2405 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
2406 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2407 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
2408 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
2409 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
5390cfc3 | 2410 | return return_status; |
2411 | } | |
2412 | ||
b57695fe | 2413 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
2414 | __u8 page_code, unsigned char scsi3addr[], | |
2415 | int cmd_type) | |
5390cfc3 | 2416 | { |
2417 | ctlr_info_t *h = hba[ctlr]; | |
2418 | CommandList_struct *c; | |
2419 | int return_status; | |
2420 | ||
2421 | c = cmd_alloc(h, 0); | |
2422 | if (!c) | |
2423 | return -ENOMEM; | |
b57695fe | 2424 | return_status = fill_cmd(c, cmd, ctlr, buff, size, page_code, |
2425 | scsi3addr, cmd_type); | |
5390cfc3 | 2426 | if (return_status == IO_OK) |
789a424a | 2427 | return_status = sendcmd_withirq_core(h, c, 1); |
2428 | ||
1da177e4 | 2429 | cmd_free(h, c, 0); |
7c832835 | 2430 | return return_status; |
1da177e4 | 2431 | } |
7c832835 | 2432 | |
1da177e4 | 2433 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
00988a35 | 2434 | int withirq, sector_t total_size, |
7c832835 BH |
2435 | unsigned int block_size, |
2436 | InquiryData_struct *inq_buff, | |
2437 | drive_info_struct *drv) | |
1da177e4 LT |
2438 | { |
2439 | int return_code; | |
00988a35 | 2440 | unsigned long t; |
b57695fe | 2441 | unsigned char scsi3addr[8]; |
00988a35 | 2442 | |
1da177e4 | 2443 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
b57695fe | 2444 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
1da177e4 LT |
2445 | if (withirq) |
2446 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, | |
b57695fe | 2447 | inq_buff, sizeof(*inq_buff), |
2448 | 0xC1, scsi3addr, TYPE_CMD); | |
1da177e4 LT |
2449 | else |
2450 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, | |
b57695fe | 2451 | sizeof(*inq_buff), 0xC1, scsi3addr, |
7c832835 | 2452 | TYPE_CMD); |
1da177e4 | 2453 | if (return_code == IO_OK) { |
7c832835 | 2454 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 2455 | printk(KERN_WARNING |
7c832835 BH |
2456 | "cciss: reading geometry failed, volume " |
2457 | "does not support reading geometry\n"); | |
1da177e4 | 2458 | drv->heads = 255; |
7c832835 | 2459 | drv->sectors = 32; // Sectors per track |
7f42d3b8 | 2460 | drv->cylinders = total_size + 1; |
89f97ad1 | 2461 | drv->raid_level = RAID_UNKNOWN; |
1da177e4 | 2462 | } else { |
1da177e4 LT |
2463 | drv->heads = inq_buff->data_byte[6]; |
2464 | drv->sectors = inq_buff->data_byte[7]; | |
2465 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
2466 | drv->cylinders += inq_buff->data_byte[5]; | |
2467 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
2468 | } |
2469 | drv->block_size = block_size; | |
97c06978 | 2470 | drv->nr_blocks = total_size + 1; |
3f7705ea MW |
2471 | t = drv->heads * drv->sectors; |
2472 | if (t > 1) { | |
97c06978 MMOD |
2473 | sector_t real_size = total_size + 1; |
2474 | unsigned long rem = sector_div(real_size, t); | |
3f7705ea | 2475 | if (rem) |
97c06978 MMOD |
2476 | real_size++; |
2477 | drv->cylinders = real_size; | |
1da177e4 | 2478 | } |
7c832835 | 2479 | } else { /* Get geometry failed */ |
1da177e4 LT |
2480 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
2481 | } | |
cc088d10 | 2482 | printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n", |
7c832835 | 2483 | drv->heads, drv->sectors, drv->cylinders); |
1da177e4 | 2484 | } |
7c832835 | 2485 | |
1da177e4 | 2486 | static void |
00988a35 | 2487 | cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size, |
7c832835 | 2488 | unsigned int *block_size) |
1da177e4 | 2489 | { |
00988a35 | 2490 | ReadCapdata_struct *buf; |
1da177e4 | 2491 | int return_code; |
b57695fe | 2492 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2493 | |
2494 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); | |
2495 | if (!buf) { | |
00988a35 MMOD |
2496 | printk(KERN_WARNING "cciss: out of memory\n"); |
2497 | return; | |
2498 | } | |
1aebe187 | 2499 | |
b57695fe | 2500 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
1da177e4 LT |
2501 | if (withirq) |
2502 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, | |
00988a35 | 2503 | ctlr, buf, sizeof(ReadCapdata_struct), |
b57695fe | 2504 | 0, scsi3addr, TYPE_CMD); |
1da177e4 LT |
2505 | else |
2506 | return_code = sendcmd(CCISS_READ_CAPACITY, | |
00988a35 | 2507 | ctlr, buf, sizeof(ReadCapdata_struct), |
b57695fe | 2508 | 0, scsi3addr, TYPE_CMD); |
1da177e4 | 2509 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2510 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
2511 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
7c832835 | 2512 | } else { /* read capacity command failed */ |
1da177e4 LT |
2513 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
2514 | *total_size = 0; | |
2515 | *block_size = BLOCK_SIZE; | |
2516 | } | |
97c06978 | 2517 | if (*total_size != 0) |
7b92aadf | 2518 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2519 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2520 | kfree(buf); |
00988a35 MMOD |
2521 | } |
2522 | ||
2523 | static void | |
2524 | cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) | |
2525 | { | |
2526 | ReadCapdata_struct_16 *buf; | |
2527 | int return_code; | |
b57695fe | 2528 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2529 | |
2530 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2531 | if (!buf) { | |
00988a35 MMOD |
2532 | printk(KERN_WARNING "cciss: out of memory\n"); |
2533 | return; | |
2534 | } | |
1aebe187 | 2535 | |
b57695fe | 2536 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
00988a35 MMOD |
2537 | if (withirq) { |
2538 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, | |
2539 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
b57695fe | 2540 | 0, scsi3addr, TYPE_CMD); |
00988a35 MMOD |
2541 | } |
2542 | else { | |
2543 | return_code = sendcmd(CCISS_READ_CAPACITY_16, | |
2544 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
b57695fe | 2545 | 0, scsi3addr, TYPE_CMD); |
00988a35 MMOD |
2546 | } |
2547 | if (return_code == IO_OK) { | |
4c1f2b31 AV |
2548 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
2549 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
00988a35 MMOD |
2550 | } else { /* read capacity command failed */ |
2551 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
2552 | *total_size = 0; | |
2553 | *block_size = BLOCK_SIZE; | |
2554 | } | |
7b92aadf | 2555 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2556 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2557 | kfree(buf); |
1da177e4 LT |
2558 | } |
2559 | ||
1da177e4 LT |
2560 | static int cciss_revalidate(struct gendisk *disk) |
2561 | { | |
2562 | ctlr_info_t *h = get_host(disk); | |
2563 | drive_info_struct *drv = get_drv(disk); | |
2564 | int logvol; | |
7c832835 | 2565 | int FOUND = 0; |
1da177e4 | 2566 | unsigned int block_size; |
00988a35 | 2567 | sector_t total_size; |
1da177e4 LT |
2568 | InquiryData_struct *inq_buff = NULL; |
2569 | ||
7c832835 BH |
2570 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
2571 | if (h->drv[logvol].LunID == drv->LunID) { | |
2572 | FOUND = 1; | |
1da177e4 LT |
2573 | break; |
2574 | } | |
2575 | } | |
2576 | ||
7c832835 BH |
2577 | if (!FOUND) |
2578 | return 1; | |
1da177e4 | 2579 | |
7c832835 BH |
2580 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2581 | if (inq_buff == NULL) { | |
2582 | printk(KERN_WARNING "cciss: out of memory\n"); | |
7c832835 BH |
2583 | return 1; |
2584 | } | |
00988a35 MMOD |
2585 | if (h->cciss_read == CCISS_READ_10) { |
2586 | cciss_read_capacity(h->ctlr, logvol, 1, | |
2587 | &total_size, &block_size); | |
2588 | } else { | |
2589 | cciss_read_capacity_16(h->ctlr, logvol, 1, | |
2590 | &total_size, &block_size); | |
2591 | } | |
7c832835 BH |
2592 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, |
2593 | inq_buff, drv); | |
1da177e4 | 2594 | |
e1defc4f | 2595 | blk_queue_logical_block_size(drv->queue, drv->block_size); |
1da177e4 LT |
2596 | set_capacity(disk, drv->nr_blocks); |
2597 | ||
1da177e4 LT |
2598 | kfree(inq_buff); |
2599 | return 0; | |
2600 | } | |
2601 | ||
2602 | /* | |
2603 | * Wait polling for a command to complete. | |
2604 | * The memory mapped FIFO is polled for the completion. | |
2605 | * Used only at init time, interrupts from the HBA are disabled. | |
2606 | */ | |
2607 | static unsigned long pollcomplete(int ctlr) | |
2608 | { | |
2609 | unsigned long done; | |
2610 | int i; | |
2611 | ||
2612 | /* Wait (up to 20 seconds) for a command to complete */ | |
2613 | ||
2614 | for (i = 20 * HZ; i > 0; i--) { | |
2615 | done = hba[ctlr]->access.command_completed(hba[ctlr]); | |
86e84862 NA |
2616 | if (done == FIFO_EMPTY) |
2617 | schedule_timeout_uninterruptible(1); | |
2618 | else | |
e2019b58 | 2619 | return done; |
1da177e4 LT |
2620 | } |
2621 | /* Invalid address to tell caller we ran out of time */ | |
2622 | return 1; | |
2623 | } | |
3da8b713 | 2624 | |
4a4b2d76 SC |
2625 | /* Send command c to controller h and poll for it to complete. |
2626 | * Turns interrupts off on the board. Used at driver init time | |
2627 | * and during SCSI error recovery. | |
1da177e4 | 2628 | */ |
4a4b2d76 | 2629 | static int sendcmd_core(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 | 2630 | { |
1da177e4 LT |
2631 | int i; |
2632 | unsigned long complete; | |
4a4b2d76 | 2633 | int status = IO_ERROR; |
1da177e4 | 2634 | u64bit buff_dma_handle; |
1da177e4 | 2635 | |
4a4b2d76 SC |
2636 | resend_cmd1: |
2637 | ||
2638 | /* Disable interrupt on the board. */ | |
2639 | h->access.set_intr_mask(h, CCISS_INTR_OFF); | |
7c832835 | 2640 | |
1da177e4 | 2641 | /* Make sure there is room in the command FIFO */ |
7c832835 | 2642 | /* Actually it should be completely empty at this time */ |
3da8b713 | 2643 | /* unless we are in here doing error handling for the scsi */ |
2644 | /* tape side of the driver. */ | |
7c832835 | 2645 | for (i = 200000; i > 0; i--) { |
1da177e4 | 2646 | /* if fifo isn't full go */ |
4a4b2d76 | 2647 | if (!(h->access.fifo_full(h))) |
7c832835 | 2648 | break; |
7c832835 BH |
2649 | udelay(10); |
2650 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," | |
4a4b2d76 | 2651 | " waiting!\n", h->ctlr); |
7c832835 | 2652 | } |
4a4b2d76 | 2653 | h->access.submit_command(h, c); /* Send the cmd */ |
3da8b713 | 2654 | do { |
4a4b2d76 | 2655 | complete = pollcomplete(h->ctlr); |
1da177e4 LT |
2656 | |
2657 | #ifdef CCISS_DEBUG | |
3da8b713 | 2658 | printk(KERN_DEBUG "cciss: command completed\n"); |
7c832835 | 2659 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2660 | |
3da8b713 | 2661 | if (complete == 1) { |
7c832835 BH |
2662 | printk(KERN_WARNING |
2663 | "cciss cciss%d: SendCmd Timeout out, " | |
4a4b2d76 | 2664 | "No command list address returned!\n", h->ctlr); |
3da8b713 | 2665 | status = IO_ERROR; |
3da8b713 | 2666 | break; |
2667 | } | |
2668 | ||
72f9f132 | 2669 | /* Make sure it's the command we're expecting. */ |
4a4b2d76 | 2670 | if ((complete & ~CISS_ERROR_BIT) != c->busaddr) { |
72f9f132 | 2671 | printk(KERN_WARNING "cciss%d: Unexpected command " |
2672 | "completion.\n", h->ctlr); | |
4a4b2d76 SC |
2673 | continue; |
2674 | } | |
2675 | ||
2676 | /* It is our command. If no error, we're done. */ | |
2677 | if (!(complete & CISS_ERROR_BIT)) { | |
2678 | status = IO_OK; | |
2679 | break; | |
2680 | } | |
2681 | ||
2682 | /* There is an error... */ | |
2683 | ||
2684 | /* if data overrun or underun on Report command ignore it */ | |
2685 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || | |
2686 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || | |
2687 | (c->Request.CDB[0] == CISS_INQUIRY)) && | |
2688 | ((c->err_info->CommandStatus == CMD_DATA_OVERRUN) || | |
2689 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN))) { | |
2690 | complete = c->busaddr; | |
2691 | status = IO_OK; | |
2692 | break; | |
1da177e4 | 2693 | } |
4a4b2d76 SC |
2694 | |
2695 | if (c->err_info->CommandStatus == CMD_UNSOLICITED_ABORT) { | |
2696 | printk(KERN_WARNING "cciss%d: unsolicited abort %p\n", | |
2697 | h->ctlr, c); | |
2698 | if (c->retry_count < MAX_CMD_RETRIES) { | |
2699 | printk(KERN_WARNING "cciss%d: retrying %p\n", | |
2700 | h->ctlr, c); | |
2701 | c->retry_count++; | |
2702 | /* erase the old error information */ | |
2703 | memset(c->err_info, 0, sizeof(c->err_info)); | |
2704 | goto resend_cmd1; | |
3da8b713 | 2705 | } |
4a4b2d76 SC |
2706 | printk(KERN_WARNING "cciss%d: retried %p too many " |
2707 | "times\n", h->ctlr, c); | |
2708 | status = IO_ERROR; | |
3c2ab402 | 2709 | break; |
4a4b2d76 SC |
2710 | } |
2711 | ||
2712 | if (c->err_info->CommandStatus == CMD_UNABORTABLE) { | |
2713 | printk(KERN_WARNING "cciss%d: command could not be " | |
2714 | "aborted.\n", h->ctlr); | |
2715 | status = IO_ERROR; | |
3c2ab402 | 2716 | break; |
4a4b2d76 SC |
2717 | } |
2718 | ||
4a4b2d76 | 2719 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS) { |
3c2ab402 | 2720 | status = check_target_status(h, c); |
2721 | break; | |
4a4b2d76 SC |
2722 | } |
2723 | ||
3c2ab402 | 2724 | printk(KERN_WARNING "cciss%d: sendcmd error\n", h->ctlr); |
2725 | printk(KERN_WARNING "cmd = 0x%02x, CommandStatus = 0x%02x\n", | |
2726 | c->Request.CDB[0], c->err_info->CommandStatus); | |
4a4b2d76 | 2727 | status = IO_ERROR; |
3c2ab402 | 2728 | break; |
4a4b2d76 SC |
2729 | |
2730 | } while (1); | |
7c832835 | 2731 | |
1da177e4 | 2732 | /* unlock the data buffer from DMA */ |
bb2a37bf MM |
2733 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2734 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
4a4b2d76 | 2735 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
7c832835 | 2736 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
4a4b2d76 SC |
2737 | return status; |
2738 | } | |
2739 | ||
2740 | /* | |
2741 | * Send a command to the controller, and wait for it to complete. | |
2742 | * Used at init time, and during SCSI error recovery. | |
2743 | */ | |
2744 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, | |
4a4b2d76 SC |
2745 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) |
2746 | { | |
2747 | CommandList_struct *c; | |
2748 | int status; | |
2749 | ||
2750 | c = cmd_alloc(hba[ctlr], 1); | |
2751 | if (!c) { | |
2752 | printk(KERN_WARNING "cciss: unable to get memory"); | |
2753 | return IO_ERROR; | |
2754 | } | |
b57695fe | 2755 | status = fill_cmd(c, cmd, ctlr, buff, size, page_code, |
2756 | scsi3addr, cmd_type); | |
4a4b2d76 SC |
2757 | if (status == IO_OK) |
2758 | status = sendcmd_core(hba[ctlr], c); | |
2759 | cmd_free(hba[ctlr], c, 1); | |
e2019b58 | 2760 | return status; |
7c832835 BH |
2761 | } |
2762 | ||
1da177e4 LT |
2763 | /* |
2764 | * Map (physical) PCI mem into (virtual) kernel space | |
2765 | */ | |
2766 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2767 | { | |
7c832835 BH |
2768 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2769 | ulong page_offs = ((ulong) base) - page_base; | |
2770 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2771 | |
7c832835 | 2772 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2773 | } |
2774 | ||
7c832835 BH |
2775 | /* |
2776 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2777 | * the Q to wait for completion. | |
2778 | */ | |
2779 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
2780 | { |
2781 | CommandList_struct *c; | |
7c832835 | 2782 | |
8a3173de JA |
2783 | while (!hlist_empty(&h->reqQ)) { |
2784 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); | |
1da177e4 LT |
2785 | /* can't do anything if fifo is full */ |
2786 | if ((h->access.fifo_full(h))) { | |
2787 | printk(KERN_WARNING "cciss: fifo full\n"); | |
2788 | break; | |
2789 | } | |
2790 | ||
7c832835 | 2791 | /* Get the first entry from the Request Q */ |
8a3173de | 2792 | removeQ(c); |
1da177e4 | 2793 | h->Qdepth--; |
7c832835 BH |
2794 | |
2795 | /* Tell the controller execute command */ | |
1da177e4 | 2796 | h->access.submit_command(h, c); |
7c832835 BH |
2797 | |
2798 | /* Put job onto the completed Q */ | |
8a3173de | 2799 | addQ(&h->cmpQ, c); |
1da177e4 LT |
2800 | } |
2801 | } | |
7c832835 | 2802 | |
1da177e4 LT |
2803 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
2804 | /* Zeros out the error record and then resends the command back */ | |
2805 | /* to the controller */ | |
7c832835 | 2806 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
2807 | { |
2808 | /* erase the old error information */ | |
2809 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2810 | ||
2811 | /* add it to software queue and then send it to the controller */ | |
8a3173de | 2812 | addQ(&h->reqQ, c); |
1da177e4 | 2813 | h->Qdepth++; |
7c832835 | 2814 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
2815 | h->maxQsinceinit = h->Qdepth; |
2816 | ||
2817 | start_io(h); | |
2818 | } | |
a9925a06 | 2819 | |
1a614f50 SC |
2820 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
2821 | unsigned int msg_byte, unsigned int host_byte, | |
2822 | unsigned int driver_byte) | |
2823 | { | |
2824 | /* inverse of macros in scsi.h */ | |
2825 | return (scsi_status_byte & 0xff) | | |
2826 | ((msg_byte & 0xff) << 8) | | |
2827 | ((host_byte & 0xff) << 16) | | |
2828 | ((driver_byte & 0xff) << 24); | |
2829 | } | |
2830 | ||
0a9279cc MM |
2831 | static inline int evaluate_target_status(ctlr_info_t *h, |
2832 | CommandList_struct *cmd, int *retry_cmd) | |
03bbfee5 MMOD |
2833 | { |
2834 | unsigned char sense_key; | |
1a614f50 SC |
2835 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
2836 | int error_value; | |
2837 | ||
0a9279cc | 2838 | *retry_cmd = 0; |
1a614f50 SC |
2839 | /* If we get in here, it means we got "target status", that is, scsi status */ |
2840 | status_byte = cmd->err_info->ScsiStatus; | |
2841 | driver_byte = DRIVER_OK; | |
2842 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ | |
2843 | ||
2844 | if (blk_pc_request(cmd->rq)) | |
2845 | host_byte = DID_PASSTHROUGH; | |
2846 | else | |
2847 | host_byte = DID_OK; | |
2848 | ||
2849 | error_value = make_status_bytes(status_byte, msg_byte, | |
2850 | host_byte, driver_byte); | |
03bbfee5 | 2851 | |
1a614f50 | 2852 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
03bbfee5 MMOD |
2853 | if (!blk_pc_request(cmd->rq)) |
2854 | printk(KERN_WARNING "cciss: cmd %p " | |
2855 | "has SCSI Status 0x%x\n", | |
2856 | cmd, cmd->err_info->ScsiStatus); | |
1a614f50 | 2857 | return error_value; |
03bbfee5 MMOD |
2858 | } |
2859 | ||
2860 | /* check the sense key */ | |
2861 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
2862 | /* no status or recovered error */ | |
1a614f50 SC |
2863 | if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq)) |
2864 | error_value = 0; | |
03bbfee5 | 2865 | |
0a9279cc MM |
2866 | if (check_for_unit_attention(h, cmd)) { |
2867 | *retry_cmd = !blk_pc_request(cmd->rq); | |
2868 | return 0; | |
2869 | } | |
2870 | ||
03bbfee5 | 2871 | if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */ |
1a614f50 | 2872 | if (error_value != 0) |
03bbfee5 MMOD |
2873 | printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" |
2874 | " sense key = 0x%x\n", cmd, sense_key); | |
1a614f50 | 2875 | return error_value; |
03bbfee5 MMOD |
2876 | } |
2877 | ||
2878 | /* SG_IO or similar, copy sense data back */ | |
2879 | if (cmd->rq->sense) { | |
2880 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) | |
2881 | cmd->rq->sense_len = cmd->err_info->SenseLen; | |
2882 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, | |
2883 | cmd->rq->sense_len); | |
2884 | } else | |
2885 | cmd->rq->sense_len = 0; | |
2886 | ||
1a614f50 | 2887 | return error_value; |
03bbfee5 MMOD |
2888 | } |
2889 | ||
7c832835 | 2890 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
2891 | * buffers for the completed job. Note that this function does not need |
2892 | * to hold the hba/queue lock. | |
7c832835 BH |
2893 | */ |
2894 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
2895 | int timeout) | |
1da177e4 | 2896 | { |
1da177e4 | 2897 | int retry_cmd = 0; |
198b7660 MMOD |
2898 | struct request *rq = cmd->rq; |
2899 | ||
2900 | rq->errors = 0; | |
7c832835 | 2901 | |
1da177e4 | 2902 | if (timeout) |
1a614f50 | 2903 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
1da177e4 | 2904 | |
d38ae168 MMOD |
2905 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
2906 | goto after_error_processing; | |
7c832835 | 2907 | |
d38ae168 | 2908 | switch (cmd->err_info->CommandStatus) { |
d38ae168 | 2909 | case CMD_TARGET_STATUS: |
0a9279cc | 2910 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
d38ae168 MMOD |
2911 | break; |
2912 | case CMD_DATA_UNDERRUN: | |
03bbfee5 MMOD |
2913 | if (blk_fs_request(cmd->rq)) { |
2914 | printk(KERN_WARNING "cciss: cmd %p has" | |
2915 | " completed with data underrun " | |
2916 | "reported\n", cmd); | |
c3a4d78c | 2917 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
03bbfee5 | 2918 | } |
d38ae168 MMOD |
2919 | break; |
2920 | case CMD_DATA_OVERRUN: | |
03bbfee5 MMOD |
2921 | if (blk_fs_request(cmd->rq)) |
2922 | printk(KERN_WARNING "cciss: cmd %p has" | |
2923 | " completed with data overrun " | |
2924 | "reported\n", cmd); | |
d38ae168 MMOD |
2925 | break; |
2926 | case CMD_INVALID: | |
2927 | printk(KERN_WARNING "cciss: cmd %p is " | |
2928 | "reported invalid\n", cmd); | |
1a614f50 SC |
2929 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2930 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2931 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2932 | break; |
2933 | case CMD_PROTOCOL_ERR: | |
2934 | printk(KERN_WARNING "cciss: cmd %p has " | |
2935 | "protocol error \n", cmd); | |
1a614f50 SC |
2936 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2937 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2938 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2939 | break; |
2940 | case CMD_HARDWARE_ERR: | |
2941 | printk(KERN_WARNING "cciss: cmd %p had " | |
2942 | " hardware error\n", cmd); | |
1a614f50 SC |
2943 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2944 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2945 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2946 | break; |
2947 | case CMD_CONNECTION_LOST: | |
2948 | printk(KERN_WARNING "cciss: cmd %p had " | |
2949 | "connection lost\n", cmd); | |
1a614f50 SC |
2950 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2951 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2952 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2953 | break; |
2954 | case CMD_ABORTED: | |
2955 | printk(KERN_WARNING "cciss: cmd %p was " | |
2956 | "aborted\n", cmd); | |
1a614f50 SC |
2957 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2958 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2959 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
2960 | break; |
2961 | case CMD_ABORT_FAILED: | |
2962 | printk(KERN_WARNING "cciss: cmd %p reports " | |
2963 | "abort failed\n", cmd); | |
1a614f50 SC |
2964 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2965 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2966 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2967 | break; |
2968 | case CMD_UNSOLICITED_ABORT: | |
2969 | printk(KERN_WARNING "cciss%d: unsolicited " | |
2970 | "abort %p\n", h->ctlr, cmd); | |
2971 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
2972 | retry_cmd = 1; | |
2973 | printk(KERN_WARNING | |
2974 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
2975 | cmd->retry_count++; | |
2976 | } else | |
2977 | printk(KERN_WARNING | |
2978 | "cciss%d: %p retried too " | |
2979 | "many times\n", h->ctlr, cmd); | |
1a614f50 SC |
2980 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2981 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2982 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
2983 | break; |
2984 | case CMD_TIMEOUT: | |
2985 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
1a614f50 SC |
2986 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2987 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2988 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2989 | break; |
2990 | default: | |
2991 | printk(KERN_WARNING "cciss: cmd %p returned " | |
2992 | "unknown status %x\n", cmd, | |
2993 | cmd->err_info->CommandStatus); | |
1a614f50 SC |
2994 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2995 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2996 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
1da177e4 | 2997 | } |
d38ae168 MMOD |
2998 | |
2999 | after_error_processing: | |
3000 | ||
1da177e4 | 3001 | /* We need to return this command */ |
7c832835 BH |
3002 | if (retry_cmd) { |
3003 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 3004 | return; |
7c832835 | 3005 | } |
03bbfee5 | 3006 | cmd->rq->completion_data = cmd; |
a9925a06 | 3007 | blk_complete_request(cmd->rq); |
1da177e4 LT |
3008 | } |
3009 | ||
7c832835 BH |
3010 | /* |
3011 | * Get a request and submit it to the controller. | |
1da177e4 | 3012 | */ |
165125e1 | 3013 | static void do_cciss_request(struct request_queue *q) |
1da177e4 | 3014 | { |
7c832835 | 3015 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 3016 | CommandList_struct *c; |
00988a35 MMOD |
3017 | sector_t start_blk; |
3018 | int seg; | |
1da177e4 LT |
3019 | struct request *creq; |
3020 | u64bit temp64; | |
3021 | struct scatterlist tmp_sg[MAXSGENTRIES]; | |
3022 | drive_info_struct *drv; | |
3023 | int i, dir; | |
3024 | ||
3025 | /* We call start_io here in case there is a command waiting on the | |
3026 | * queue that has not been sent. | |
7c832835 | 3027 | */ |
1da177e4 LT |
3028 | if (blk_queue_plugged(q)) |
3029 | goto startio; | |
3030 | ||
7c832835 | 3031 | queue: |
9934c8c0 | 3032 | creq = blk_peek_request(q); |
1da177e4 LT |
3033 | if (!creq) |
3034 | goto startio; | |
3035 | ||
089fe1b2 | 3036 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
1da177e4 | 3037 | |
7c832835 | 3038 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
3039 | goto full; |
3040 | ||
9934c8c0 | 3041 | blk_start_request(creq); |
1da177e4 LT |
3042 | |
3043 | spin_unlock_irq(q->queue_lock); | |
3044 | ||
3045 | c->cmd_type = CMD_RWREQ; | |
3046 | c->rq = creq; | |
7c832835 BH |
3047 | |
3048 | /* fill in the request */ | |
1da177e4 | 3049 | drv = creq->rq_disk->private_data; |
7c832835 | 3050 | c->Header.ReplyQueue = 0; // unused in simple mode |
33079b21 MM |
3051 | /* got command from pool, so use the command block index instead */ |
3052 | /* for direct lookups. */ | |
3053 | /* The first 2 bits are reserved for controller error reporting. */ | |
3054 | c->Header.Tag.lower = (c->cmdindex << 3); | |
7c832835 BH |
3055 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
3056 | c->Header.LUN.LogDev.VolId = drv->LunID; | |
1da177e4 | 3057 | c->Header.LUN.LogDev.Mode = 1; |
7c832835 BH |
3058 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
3059 | c->Request.Type.Type = TYPE_CMD; // It is a command. | |
3060 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
3061 | c->Request.Type.Direction = | |
a52de245 | 3062 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
7c832835 BH |
3063 | c->Request.Timeout = 0; // Don't time out |
3064 | c->Request.CDB[0] = | |
00988a35 | 3065 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
83096ebf | 3066 | start_blk = blk_rq_pos(creq); |
1da177e4 | 3067 | #ifdef CCISS_DEBUG |
83096ebf TH |
3068 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", |
3069 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); | |
7c832835 | 3070 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3071 | |
45711f1a | 3072 | sg_init_table(tmp_sg, MAXSGENTRIES); |
1da177e4 LT |
3073 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
3074 | ||
7c832835 | 3075 | /* get the DMA records for the setup */ |
1da177e4 LT |
3076 | if (c->Request.Type.Direction == XFER_READ) |
3077 | dir = PCI_DMA_FROMDEVICE; | |
3078 | else | |
3079 | dir = PCI_DMA_TODEVICE; | |
3080 | ||
7c832835 | 3081 | for (i = 0; i < seg; i++) { |
1da177e4 | 3082 | c->SG[i].Len = tmp_sg[i].length; |
45711f1a | 3083 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
7c832835 BH |
3084 | tmp_sg[i].offset, |
3085 | tmp_sg[i].length, dir); | |
1da177e4 | 3086 | c->SG[i].Addr.lower = temp64.val32.lower; |
7c832835 BH |
3087 | c->SG[i].Addr.upper = temp64.val32.upper; |
3088 | c->SG[i].Ext = 0; // we are not chaining | |
1da177e4 | 3089 | } |
7c832835 BH |
3090 | /* track how many SG entries we are using */ |
3091 | if (seg > h->maxSG) | |
3092 | h->maxSG = seg; | |
1da177e4 LT |
3093 | |
3094 | #ifdef CCISS_DEBUG | |
83096ebf TH |
3095 | printk(KERN_DEBUG "cciss: Submitting %u sectors in %d segments\n", |
3096 | blk_rq_sectors(creq), seg); | |
7c832835 | 3097 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
3098 | |
3099 | c->Header.SGList = c->Header.SGTotal = seg; | |
03bbfee5 MMOD |
3100 | if (likely(blk_fs_request(creq))) { |
3101 | if(h->cciss_read == CCISS_READ_10) { | |
3102 | c->Request.CDB[1] = 0; | |
3103 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB | |
3104 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; | |
3105 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
3106 | c->Request.CDB[5] = start_blk & 0xff; | |
3107 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB | |
83096ebf TH |
3108 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
3109 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3110 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
3111 | } else { | |
582539e5 RD |
3112 | u32 upper32 = upper_32_bits(start_blk); |
3113 | ||
03bbfee5 MMOD |
3114 | c->Request.CDBLen = 16; |
3115 | c->Request.CDB[1]= 0; | |
582539e5 RD |
3116 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; //MSB |
3117 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; | |
3118 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; | |
3119 | c->Request.CDB[5]= upper32 & 0xff; | |
03bbfee5 MMOD |
3120 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
3121 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
3122 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
3123 | c->Request.CDB[9]= start_blk & 0xff; | |
83096ebf TH |
3124 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
3125 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; | |
3126 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; | |
3127 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3128 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
3129 | } | |
3130 | } else if (blk_pc_request(creq)) { | |
3131 | c->Request.CDBLen = creq->cmd_len; | |
3132 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); | |
00988a35 | 3133 | } else { |
03bbfee5 MMOD |
3134 | printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); |
3135 | BUG(); | |
00988a35 | 3136 | } |
1da177e4 LT |
3137 | |
3138 | spin_lock_irq(q->queue_lock); | |
3139 | ||
8a3173de | 3140 | addQ(&h->reqQ, c); |
1da177e4 | 3141 | h->Qdepth++; |
7c832835 BH |
3142 | if (h->Qdepth > h->maxQsinceinit) |
3143 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
3144 | |
3145 | goto queue; | |
00988a35 | 3146 | full: |
1da177e4 | 3147 | blk_stop_queue(q); |
00988a35 | 3148 | startio: |
1da177e4 LT |
3149 | /* We will already have the driver lock here so not need |
3150 | * to lock it. | |
7c832835 | 3151 | */ |
1da177e4 LT |
3152 | start_io(h); |
3153 | } | |
3154 | ||
3da8b713 | 3155 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
3156 | { | |
3da8b713 | 3157 | return h->access.command_completed(h); |
3da8b713 | 3158 | } |
3159 | ||
3160 | static inline int interrupt_pending(ctlr_info_t *h) | |
3161 | { | |
3da8b713 | 3162 | return h->access.intr_pending(h); |
3da8b713 | 3163 | } |
3164 | ||
3165 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
3166 | { | |
7c832835 | 3167 | return (((h->access.intr_pending(h) == 0) || |
3da8b713 | 3168 | (h->interrupts_enabled == 0))); |
3da8b713 | 3169 | } |
3170 | ||
7d12e780 | 3171 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
1da177e4 LT |
3172 | { |
3173 | ctlr_info_t *h = dev_id; | |
3174 | CommandList_struct *c; | |
3175 | unsigned long flags; | |
33079b21 | 3176 | __u32 a, a1, a2; |
1da177e4 | 3177 | |
3da8b713 | 3178 | if (interrupt_not_for_us(h)) |
1da177e4 | 3179 | return IRQ_NONE; |
1da177e4 LT |
3180 | /* |
3181 | * If there are completed commands in the completion queue, | |
3182 | * we had better do something about it. | |
3183 | */ | |
3184 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 3185 | while (interrupt_pending(h)) { |
7c832835 | 3186 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
1da177e4 | 3187 | a1 = a; |
33079b21 MM |
3188 | if ((a & 0x04)) { |
3189 | a2 = (a >> 3); | |
f880632f | 3190 | if (a2 >= h->nr_cmds) { |
7c832835 BH |
3191 | printk(KERN_WARNING |
3192 | "cciss: controller cciss%d failed, stopping.\n", | |
3193 | h->ctlr); | |
33079b21 MM |
3194 | fail_all_cmds(h->ctlr); |
3195 | return IRQ_HANDLED; | |
3196 | } | |
3197 | ||
3198 | c = h->cmd_pool + a2; | |
3199 | a = c->busaddr; | |
3200 | ||
3201 | } else { | |
8a3173de JA |
3202 | struct hlist_node *tmp; |
3203 | ||
7c832835 | 3204 | a &= ~3; |
8a3173de JA |
3205 | c = NULL; |
3206 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { | |
3207 | if (c->busaddr == a) | |
7c832835 BH |
3208 | break; |
3209 | } | |
33079b21 | 3210 | } |
1da177e4 LT |
3211 | /* |
3212 | * If we've found the command, take it off the | |
3213 | * completion Q and free it | |
3214 | */ | |
8a3173de JA |
3215 | if (c && c->busaddr == a) { |
3216 | removeQ(c); | |
1da177e4 LT |
3217 | if (c->cmd_type == CMD_RWREQ) { |
3218 | complete_command(h, c, 0); | |
3219 | } else if (c->cmd_type == CMD_IOCTL_PEND) { | |
3220 | complete(c->waiting); | |
3221 | } | |
3222 | # ifdef CONFIG_CISS_SCSI_TAPE | |
3223 | else if (c->cmd_type == CMD_SCSI) | |
3224 | complete_scsi_command(c, 0, a1); | |
3225 | # endif | |
3226 | continue; | |
3227 | } | |
3228 | } | |
3229 | } | |
3230 | ||
1da177e4 LT |
3231 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
3232 | return IRQ_HANDLED; | |
3233 | } | |
7c832835 | 3234 | |
0a9279cc MM |
3235 | static int scan_thread(void *data) |
3236 | { | |
3237 | ctlr_info_t *h = data; | |
3238 | int rc; | |
3239 | DECLARE_COMPLETION_ONSTACK(wait); | |
3240 | h->rescan_wait = &wait; | |
3241 | ||
3242 | for (;;) { | |
3243 | rc = wait_for_completion_interruptible(&wait); | |
3244 | if (kthread_should_stop()) | |
3245 | break; | |
3246 | if (!rc) | |
3247 | rebuild_lun_table(h, 0); | |
3248 | } | |
3249 | return 0; | |
3250 | } | |
3251 | ||
3252 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) | |
3253 | { | |
3254 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) | |
3255 | return 0; | |
3256 | ||
3257 | switch (c->err_info->SenseInfo[12]) { | |
3258 | case STATE_CHANGED: | |
3259 | printk(KERN_WARNING "cciss%d: a state change " | |
3260 | "detected, command retried\n", h->ctlr); | |
3261 | return 1; | |
3262 | break; | |
3263 | case LUN_FAILED: | |
3264 | printk(KERN_WARNING "cciss%d: LUN failure " | |
3265 | "detected, action required\n", h->ctlr); | |
3266 | return 1; | |
3267 | break; | |
3268 | case REPORT_LUNS_CHANGED: | |
3269 | printk(KERN_WARNING "cciss%d: report LUN data " | |
3270 | "changed\n", h->ctlr); | |
3271 | if (h->rescan_wait) | |
3272 | complete(h->rescan_wait); | |
3273 | return 1; | |
3274 | break; | |
3275 | case POWER_OR_RESET: | |
3276 | printk(KERN_WARNING "cciss%d: a power on " | |
3277 | "or device reset detected\n", h->ctlr); | |
3278 | return 1; | |
3279 | break; | |
3280 | case UNIT_ATTENTION_CLEARED: | |
3281 | printk(KERN_WARNING "cciss%d: unit attention " | |
3282 | "cleared by another initiator\n", h->ctlr); | |
3283 | return 1; | |
3284 | break; | |
3285 | default: | |
3286 | printk(KERN_WARNING "cciss%d: unknown " | |
3287 | "unit attention detected\n", h->ctlr); | |
3288 | return 1; | |
3289 | } | |
3290 | } | |
3291 | ||
7c832835 | 3292 | /* |
d14c4ab5 | 3293 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 3294 | * the io functions. |
7c832835 | 3295 | * This is for debug only. |
1da177e4 LT |
3296 | */ |
3297 | #ifdef CCISS_DEBUG | |
7c832835 | 3298 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 LT |
3299 | { |
3300 | int i; | |
3301 | char temp_name[17]; | |
3302 | ||
3303 | printk("Controller Configuration information\n"); | |
3304 | printk("------------------------------------\n"); | |
7c832835 | 3305 | for (i = 0; i < 4; i++) |
1da177e4 | 3306 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
3307 | temp_name[4] = '\0'; |
3308 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 3309 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
3310 | printk(" Transport methods supported = 0x%x\n", |
3311 | readl(&(tb->TransportSupport))); | |
3312 | printk(" Transport methods active = 0x%x\n", | |
3313 | readl(&(tb->TransportActive))); | |
3314 | printk(" Requested transport Method = 0x%x\n", | |
3315 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 3316 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 3317 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 3318 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
3319 | readl(&(tb->HostWrite.CoalIntCount))); |
3320 | printk(" Max outstanding commands = 0x%d\n", | |
3321 | readl(&(tb->CmdsOutMax))); | |
3322 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
3323 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
3324 | temp_name[i] = readb(&(tb->ServerName[i])); |
3325 | temp_name[16] = '\0'; | |
3326 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 3327 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
1da177e4 | 3328 | } |
7c832835 | 3329 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3330 | |
7c832835 | 3331 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
3332 | { |
3333 | int i, offset, mem_type, bar_type; | |
7c832835 | 3334 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
3335 | return 0; |
3336 | offset = 0; | |
7c832835 BH |
3337 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
3338 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
3339 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
3340 | offset += 4; | |
3341 | else { | |
3342 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 3343 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 3344 | switch (mem_type) { |
7c832835 BH |
3345 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
3346 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
3347 | offset += 4; /* 32 bit */ | |
3348 | break; | |
3349 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
3350 | offset += 8; | |
3351 | break; | |
3352 | default: /* reserved in PCI 2.2 */ | |
3353 | printk(KERN_WARNING | |
3354 | "Base address is invalid\n"); | |
3355 | return -1; | |
1da177e4 LT |
3356 | break; |
3357 | } | |
3358 | } | |
7c832835 BH |
3359 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
3360 | return i + 1; | |
1da177e4 LT |
3361 | } |
3362 | return -1; | |
3363 | } | |
3364 | ||
fb86a35b MM |
3365 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
3366 | * controllers that are capable. If not, we use IO-APIC mode. | |
3367 | */ | |
3368 | ||
7c832835 BH |
3369 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
3370 | struct pci_dev *pdev, __u32 board_id) | |
fb86a35b MM |
3371 | { |
3372 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3373 | int err; |
3374 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
3375 | {0, 2}, {0, 3} | |
3376 | }; | |
fb86a35b MM |
3377 | |
3378 | /* Some boards advertise MSI but don't really support it */ | |
3379 | if ((board_id == 0x40700E11) || | |
7c832835 BH |
3380 | (board_id == 0x40800E11) || |
3381 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
fb86a35b MM |
3382 | goto default_int_mode; |
3383 | ||
7c832835 BH |
3384 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
3385 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); | |
3386 | if (!err) { | |
3387 | c->intr[0] = cciss_msix_entries[0].vector; | |
3388 | c->intr[1] = cciss_msix_entries[1].vector; | |
3389 | c->intr[2] = cciss_msix_entries[2].vector; | |
3390 | c->intr[3] = cciss_msix_entries[3].vector; | |
3391 | c->msix_vector = 1; | |
3392 | return; | |
3393 | } | |
3394 | if (err > 0) { | |
3395 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
3396 | "available\n", err); | |
1ecb9c0f | 3397 | goto default_int_mode; |
7c832835 BH |
3398 | } else { |
3399 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
3400 | err); | |
1ecb9c0f | 3401 | goto default_int_mode; |
7c832835 BH |
3402 | } |
3403 | } | |
3404 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
3405 | if (!pci_enable_msi(pdev)) { | |
7c832835 | 3406 | c->msi_vector = 1; |
7c832835 BH |
3407 | } else { |
3408 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
7c832835 BH |
3409 | } |
3410 | } | |
1ecb9c0f | 3411 | default_int_mode: |
7c832835 | 3412 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 3413 | /* if we get here we're going to use the default interrupt mode */ |
7c832835 | 3414 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
fb86a35b MM |
3415 | return; |
3416 | } | |
3417 | ||
7d1fd970 | 3418 | static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
1da177e4 LT |
3419 | { |
3420 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
3421 | __u32 board_id, scratchpad = 0; | |
3422 | __u64 cfg_offset; | |
3423 | __u32 cfg_base_addr; | |
3424 | __u64 cfg_base_addr_index; | |
c33ac89b | 3425 | int i, err; |
1da177e4 LT |
3426 | |
3427 | /* check to see if controller has been disabled */ | |
3428 | /* BEFORE trying to enable it */ | |
7c832835 BH |
3429 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
3430 | if (!(command & 0x02)) { | |
3431 | printk(KERN_WARNING | |
3432 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 3433 | return -ENODEV; |
1da177e4 LT |
3434 | } |
3435 | ||
c33ac89b | 3436 | err = pci_enable_device(pdev); |
7c832835 | 3437 | if (err) { |
1da177e4 | 3438 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 3439 | return err; |
1da177e4 | 3440 | } |
1da177e4 | 3441 | |
4e570309 BH |
3442 | err = pci_request_regions(pdev, "cciss"); |
3443 | if (err) { | |
3444 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 3445 | "aborting\n"); |
872225ca | 3446 | return err; |
4e570309 BH |
3447 | } |
3448 | ||
1da177e4 LT |
3449 | subsystem_vendor_id = pdev->subsystem_vendor; |
3450 | subsystem_device_id = pdev->subsystem_device; | |
3451 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
7c832835 | 3452 | subsystem_vendor_id); |
1da177e4 | 3453 | |
1da177e4 LT |
3454 | #ifdef CCISS_DEBUG |
3455 | printk("command = %x\n", command); | |
3456 | printk("irq = %x\n", pdev->irq); | |
3457 | printk("board_id = %x\n", board_id); | |
7c832835 | 3458 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3459 | |
fb86a35b MM |
3460 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
3461 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
3462 | */ | |
3463 | cciss_interrupt_mode(c, pdev, board_id); | |
1da177e4 | 3464 | |
e1438581 MM |
3465 | /* find the memory BAR */ |
3466 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
3467 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) | |
3468 | break; | |
3469 | } | |
3470 | if (i == DEVICE_COUNT_RESOURCE) { | |
3471 | printk(KERN_WARNING "cciss: No memory BAR found\n"); | |
3472 | err = -ENODEV; | |
3473 | goto err_out_free_res; | |
3474 | } | |
3475 | ||
3476 | c->paddr = pci_resource_start(pdev, i); /* addressing mode bits | |
3477 | * already removed | |
3478 | */ | |
1da177e4 | 3479 | |
1da177e4 | 3480 | #ifdef CCISS_DEBUG |
9f92f471 | 3481 | printk("address 0 = %lx\n", c->paddr); |
7c832835 | 3482 | #endif /* CCISS_DEBUG */ |
a5b92873 | 3483 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
1da177e4 LT |
3484 | |
3485 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
3486 | * We poll for up to 120 secs, once per 100ms. */ | |
7c832835 | 3487 | for (i = 0; i < 1200; i++) { |
1da177e4 LT |
3488 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
3489 | if (scratchpad == CCISS_FIRMWARE_READY) | |
3490 | break; | |
3491 | set_current_state(TASK_INTERRUPTIBLE); | |
7c832835 | 3492 | schedule_timeout(HZ / 10); /* wait 100ms */ |
1da177e4 LT |
3493 | } |
3494 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
3495 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
c33ac89b | 3496 | err = -ENODEV; |
4e570309 | 3497 | goto err_out_free_res; |
1da177e4 LT |
3498 | } |
3499 | ||
3500 | /* get the address index number */ | |
3501 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
3502 | cfg_base_addr &= (__u32) 0x0000ffff; | |
3503 | #ifdef CCISS_DEBUG | |
3504 | printk("cfg base address = %x\n", cfg_base_addr); | |
7c832835 BH |
3505 | #endif /* CCISS_DEBUG */ |
3506 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); | |
1da177e4 | 3507 | #ifdef CCISS_DEBUG |
9f92f471 RD |
3508 | printk("cfg base address index = %llx\n", |
3509 | (unsigned long long)cfg_base_addr_index); | |
7c832835 | 3510 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
3511 | if (cfg_base_addr_index == -1) { |
3512 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
c33ac89b | 3513 | err = -ENODEV; |
4e570309 | 3514 | goto err_out_free_res; |
1da177e4 LT |
3515 | } |
3516 | ||
3517 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
3518 | #ifdef CCISS_DEBUG | |
9f92f471 | 3519 | printk("cfg offset = %llx\n", (unsigned long long)cfg_offset); |
7c832835 BH |
3520 | #endif /* CCISS_DEBUG */ |
3521 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
3522 | cfg_base_addr_index) + | |
3523 | cfg_offset, sizeof(CfgTable_struct)); | |
1da177e4 LT |
3524 | c->board_id = board_id; |
3525 | ||
3526 | #ifdef CCISS_DEBUG | |
945f390f | 3527 | print_cfg_table(c->cfgtable); |
7c832835 | 3528 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3529 | |
49153998 MM |
3530 | /* Some controllers support Zero Memory Raid (ZMR). |
3531 | * When configured in ZMR mode the number of supported | |
3532 | * commands drops to 64. So instead of just setting an | |
3533 | * arbitrary value we make the driver a little smarter. | |
3534 | * We read the config table to tell us how many commands | |
3535 | * are supported on the controller then subtract 4 to | |
3536 | * leave a little room for ioctl calls. | |
3537 | */ | |
3538 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); | |
7c832835 | 3539 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
1da177e4 LT |
3540 | if (board_id == products[i].board_id) { |
3541 | c->product_name = products[i].product_name; | |
3542 | c->access = *(products[i].access); | |
49153998 | 3543 | c->nr_cmds = c->max_commands - 4; |
1da177e4 LT |
3544 | break; |
3545 | } | |
3546 | } | |
7c832835 BH |
3547 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
3548 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
3549 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
3550 | (readb(&c->cfgtable->Signature[3]) != 'S')) { | |
1da177e4 | 3551 | printk("Does not appear to be a valid CISS config table\n"); |
c33ac89b | 3552 | err = -ENODEV; |
4e570309 | 3553 | goto err_out_free_res; |
1da177e4 | 3554 | } |
4ff9a9a4 MM |
3555 | /* We didn't find the controller in our list. We know the |
3556 | * signature is valid. If it's an HP device let's try to | |
3557 | * bind to the device and fire it up. Otherwise we bail. | |
3558 | */ | |
3559 | if (i == ARRAY_SIZE(products)) { | |
3560 | if (subsystem_vendor_id == PCI_VENDOR_ID_HP) { | |
3561 | c->product_name = products[i-1].product_name; | |
3562 | c->access = *(products[i-1].access); | |
49153998 | 3563 | c->nr_cmds = c->max_commands - 4; |
4ff9a9a4 MM |
3564 | printk(KERN_WARNING "cciss: This is an unknown " |
3565 | "Smart Array controller.\n" | |
3566 | "cciss: Please update to the latest driver " | |
3567 | "available from www.hp.com.\n"); | |
3568 | } else { | |
3569 | printk(KERN_WARNING "cciss: Sorry, I don't know how" | |
3570 | " to access the Smart Array controller %08lx\n" | |
3571 | , (unsigned long)board_id); | |
3572 | err = -ENODEV; | |
3573 | goto err_out_free_res; | |
3574 | } | |
3575 | } | |
1da177e4 | 3576 | #ifdef CONFIG_X86 |
7c832835 BH |
3577 | { |
3578 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
3579 | __u32 prefetch; | |
3580 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
3581 | prefetch |= 0x100; | |
3582 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
3583 | } | |
1da177e4 LT |
3584 | #endif |
3585 | ||
8bf50f71 MMOD |
3586 | /* Disabling DMA prefetch and refetch for the P600. |
3587 | * An ASIC bug may result in accesses to invalid memory addresses. | |
3588 | * We've disabled prefetch for some time now. Testing with XEN | |
3589 | * kernels revealed a bug in the refetch if dom0 resides on a P600. | |
f92e2f5f MM |
3590 | */ |
3591 | if(board_id == 0x3225103C) { | |
3592 | __u32 dma_prefetch; | |
8bf50f71 | 3593 | __u32 dma_refetch; |
f92e2f5f MM |
3594 | dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); |
3595 | dma_prefetch |= 0x8000; | |
3596 | writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); | |
8bf50f71 MMOD |
3597 | pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch); |
3598 | dma_refetch |= 0x1; | |
3599 | pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch); | |
f92e2f5f MM |
3600 | } |
3601 | ||
1da177e4 LT |
3602 | #ifdef CCISS_DEBUG |
3603 | printk("Trying to put board into Simple mode\n"); | |
7c832835 | 3604 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3605 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
7c832835 BH |
3606 | /* Update the field, and then ring the doorbell */ |
3607 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); | |
3608 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); | |
1da177e4 LT |
3609 | |
3610 | /* under certain very rare conditions, this can take awhile. | |
3611 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3612 | * as we enter this code.) */ | |
7c832835 | 3613 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
1da177e4 LT |
3614 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
3615 | break; | |
3616 | /* delay and try again */ | |
3617 | set_current_state(TASK_INTERRUPTIBLE); | |
3618 | schedule_timeout(10); | |
7c832835 | 3619 | } |
1da177e4 LT |
3620 | |
3621 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3622 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
3623 | readl(c->vaddr + SA5_DOORBELL)); | |
3624 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3625 | #ifdef CCISS_DEBUG |
7c832835 BH |
3626 | print_cfg_table(c->cfgtable); |
3627 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3628 | |
7c832835 | 3629 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
1da177e4 | 3630 | printk(KERN_WARNING "cciss: unable to get board into" |
7c832835 | 3631 | " simple mode\n"); |
c33ac89b | 3632 | err = -ENODEV; |
4e570309 | 3633 | goto err_out_free_res; |
1da177e4 LT |
3634 | } |
3635 | return 0; | |
3636 | ||
5faad620 | 3637 | err_out_free_res: |
872225ca MM |
3638 | /* |
3639 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3640 | * Smart Array controllers that pci_enable_device does not undo | |
3641 | */ | |
4e570309 | 3642 | pci_release_regions(pdev); |
c33ac89b | 3643 | return err; |
1da177e4 LT |
3644 | } |
3645 | ||
6ae5ce8e MM |
3646 | /* Function to find the first free pointer into our hba[] array |
3647 | * Returns -1 if no free entries are left. | |
7c832835 | 3648 | */ |
1da177e4 LT |
3649 | static int alloc_cciss_hba(void) |
3650 | { | |
799202cb | 3651 | int i; |
1da177e4 | 3652 | |
7c832835 | 3653 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
3654 | if (!hba[i]) { |
3655 | ctlr_info_t *p; | |
f2912a12 | 3656 | |
06ff37ff | 3657 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
3658 | if (!p) |
3659 | goto Enomem; | |
1da177e4 LT |
3660 | hba[i] = p; |
3661 | return i; | |
3662 | } | |
3663 | } | |
3664 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 3665 | " of %d controllers.\n", MAX_CTLR); |
799202cb MM |
3666 | return -1; |
3667 | Enomem: | |
1da177e4 | 3668 | printk(KERN_ERR "cciss: out of memory.\n"); |
1da177e4 LT |
3669 | return -1; |
3670 | } | |
3671 | ||
3672 | static void free_hba(int i) | |
3673 | { | |
3674 | ctlr_info_t *p = hba[i]; | |
3675 | int n; | |
3676 | ||
3677 | hba[i] = NULL; | |
799202cb | 3678 | for (n = 0; n < CISS_MAX_LUN; n++) |
1da177e4 LT |
3679 | put_disk(p->gendisk[n]); |
3680 | kfree(p); | |
3681 | } | |
3682 | ||
82eb03cf CC |
3683 | /* Send a message CDB to the firmware. */ |
3684 | static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) | |
3685 | { | |
3686 | typedef struct { | |
3687 | CommandListHeader_struct CommandHeader; | |
3688 | RequestBlock_struct Request; | |
3689 | ErrDescriptor_struct ErrorDescriptor; | |
3690 | } Command; | |
3691 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); | |
3692 | Command *cmd; | |
3693 | dma_addr_t paddr64; | |
3694 | uint32_t paddr32, tag; | |
3695 | void __iomem *vaddr; | |
3696 | int i, err; | |
3697 | ||
3698 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
3699 | if (vaddr == NULL) | |
3700 | return -ENOMEM; | |
3701 | ||
3702 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the | |
3703 | CCISS commands, so they must be allocated from the lower 4GiB of | |
3704 | memory. */ | |
e930438c | 3705 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
82eb03cf CC |
3706 | if (err) { |
3707 | iounmap(vaddr); | |
3708 | return -ENOMEM; | |
3709 | } | |
3710 | ||
3711 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); | |
3712 | if (cmd == NULL) { | |
3713 | iounmap(vaddr); | |
3714 | return -ENOMEM; | |
3715 | } | |
3716 | ||
3717 | /* This must fit, because of the 32-bit consistent DMA mask. Also, | |
3718 | although there's no guarantee, we assume that the address is at | |
3719 | least 4-byte aligned (most likely, it's page-aligned). */ | |
3720 | paddr32 = paddr64; | |
3721 | ||
3722 | cmd->CommandHeader.ReplyQueue = 0; | |
3723 | cmd->CommandHeader.SGList = 0; | |
3724 | cmd->CommandHeader.SGTotal = 0; | |
3725 | cmd->CommandHeader.Tag.lower = paddr32; | |
3726 | cmd->CommandHeader.Tag.upper = 0; | |
3727 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); | |
3728 | ||
3729 | cmd->Request.CDBLen = 16; | |
3730 | cmd->Request.Type.Type = TYPE_MSG; | |
3731 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; | |
3732 | cmd->Request.Type.Direction = XFER_NONE; | |
3733 | cmd->Request.Timeout = 0; /* Don't time out */ | |
3734 | cmd->Request.CDB[0] = opcode; | |
3735 | cmd->Request.CDB[1] = type; | |
3736 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ | |
3737 | ||
3738 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); | |
3739 | cmd->ErrorDescriptor.Addr.upper = 0; | |
3740 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); | |
3741 | ||
3742 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); | |
3743 | ||
3744 | for (i = 0; i < 10; i++) { | |
3745 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); | |
3746 | if ((tag & ~3) == paddr32) | |
3747 | break; | |
3748 | schedule_timeout_uninterruptible(HZ); | |
3749 | } | |
3750 | ||
3751 | iounmap(vaddr); | |
3752 | ||
3753 | /* we leak the DMA buffer here ... no choice since the controller could | |
3754 | still complete the command. */ | |
3755 | if (i == 10) { | |
3756 | printk(KERN_ERR "cciss: controller message %02x:%02x timed out\n", | |
3757 | opcode, type); | |
3758 | return -ETIMEDOUT; | |
3759 | } | |
3760 | ||
3761 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); | |
3762 | ||
3763 | if (tag & 2) { | |
3764 | printk(KERN_ERR "cciss: controller message %02x:%02x failed\n", | |
3765 | opcode, type); | |
3766 | return -EIO; | |
3767 | } | |
3768 | ||
3769 | printk(KERN_INFO "cciss: controller message %02x:%02x succeeded\n", | |
3770 | opcode, type); | |
3771 | return 0; | |
3772 | } | |
3773 | ||
3774 | #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0) | |
3775 | #define cciss_noop(p) cciss_message(p, 3, 0) | |
3776 | ||
3777 | static __devinit int cciss_reset_msi(struct pci_dev *pdev) | |
3778 | { | |
3779 | /* the #defines are stolen from drivers/pci/msi.h. */ | |
3780 | #define msi_control_reg(base) (base + PCI_MSI_FLAGS) | |
3781 | #define PCI_MSIX_FLAGS_ENABLE (1 << 15) | |
3782 | ||
3783 | int pos; | |
3784 | u16 control = 0; | |
3785 | ||
3786 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); | |
3787 | if (pos) { | |
3788 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
3789 | if (control & PCI_MSI_FLAGS_ENABLE) { | |
3790 | printk(KERN_INFO "cciss: resetting MSI\n"); | |
3791 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE); | |
3792 | } | |
3793 | } | |
3794 | ||
3795 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); | |
3796 | if (pos) { | |
3797 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
3798 | if (control & PCI_MSIX_FLAGS_ENABLE) { | |
3799 | printk(KERN_INFO "cciss: resetting MSI-X\n"); | |
3800 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE); | |
3801 | } | |
3802 | } | |
3803 | ||
3804 | return 0; | |
3805 | } | |
3806 | ||
3807 | /* This does a hard reset of the controller using PCI power management | |
3808 | * states. */ | |
3809 | static __devinit int cciss_hard_reset_controller(struct pci_dev *pdev) | |
3810 | { | |
3811 | u16 pmcsr, saved_config_space[32]; | |
3812 | int i, pos; | |
3813 | ||
3814 | printk(KERN_INFO "cciss: using PCI PM to reset controller\n"); | |
3815 | ||
3816 | /* This is very nearly the same thing as | |
3817 | ||
3818 | pci_save_state(pci_dev); | |
3819 | pci_set_power_state(pci_dev, PCI_D3hot); | |
3820 | pci_set_power_state(pci_dev, PCI_D0); | |
3821 | pci_restore_state(pci_dev); | |
3822 | ||
3823 | but we can't use these nice canned kernel routines on | |
3824 | kexec, because they also check the MSI/MSI-X state in PCI | |
3825 | configuration space and do the wrong thing when it is | |
3826 | set/cleared. Also, the pci_save/restore_state functions | |
3827 | violate the ordering requirements for restoring the | |
3828 | configuration space from the CCISS document (see the | |
3829 | comment below). So we roll our own .... */ | |
3830 | ||
3831 | for (i = 0; i < 32; i++) | |
3832 | pci_read_config_word(pdev, 2*i, &saved_config_space[i]); | |
3833 | ||
3834 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); | |
3835 | if (pos == 0) { | |
3836 | printk(KERN_ERR "cciss_reset_controller: PCI PM not supported\n"); | |
3837 | return -ENODEV; | |
3838 | } | |
3839 | ||
3840 | /* Quoting from the Open CISS Specification: "The Power | |
3841 | * Management Control/Status Register (CSR) controls the power | |
3842 | * state of the device. The normal operating state is D0, | |
3843 | * CSR=00h. The software off state is D3, CSR=03h. To reset | |
3844 | * the controller, place the interface device in D3 then to | |
3845 | * D0, this causes a secondary PCI reset which will reset the | |
3846 | * controller." */ | |
3847 | ||
3848 | /* enter the D3hot power management state */ | |
3849 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); | |
3850 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
3851 | pmcsr |= PCI_D3hot; | |
3852 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
3853 | ||
3854 | schedule_timeout_uninterruptible(HZ >> 1); | |
3855 | ||
3856 | /* enter the D0 power management state */ | |
3857 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
3858 | pmcsr |= PCI_D0; | |
3859 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
3860 | ||
3861 | schedule_timeout_uninterruptible(HZ >> 1); | |
3862 | ||
3863 | /* Restore the PCI configuration space. The Open CISS | |
3864 | * Specification says, "Restore the PCI Configuration | |
3865 | * Registers, offsets 00h through 60h. It is important to | |
3866 | * restore the command register, 16-bits at offset 04h, | |
3867 | * last. Do not restore the configuration status register, | |
3868 | * 16-bits at offset 06h." Note that the offset is 2*i. */ | |
3869 | for (i = 0; i < 32; i++) { | |
3870 | if (i == 2 || i == 3) | |
3871 | continue; | |
3872 | pci_write_config_word(pdev, 2*i, saved_config_space[i]); | |
3873 | } | |
3874 | wmb(); | |
3875 | pci_write_config_word(pdev, 4, saved_config_space[2]); | |
3876 | ||
3877 | return 0; | |
3878 | } | |
3879 | ||
1da177e4 LT |
3880 | /* |
3881 | * This is it. Find all the controllers and register them. I really hate | |
3882 | * stealing all these major device numbers. | |
3883 | * returns the number of block devices registered. | |
3884 | */ | |
3885 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 3886 | const struct pci_device_id *ent) |
1da177e4 | 3887 | { |
1da177e4 | 3888 | int i; |
799202cb | 3889 | int j = 0; |
1da177e4 | 3890 | int rc; |
22bece00 | 3891 | int dac, return_code; |
212a5026 | 3892 | InquiryData_struct *inq_buff; |
1da177e4 | 3893 | |
82eb03cf CC |
3894 | if (reset_devices) { |
3895 | /* Reset the controller with a PCI power-cycle */ | |
3896 | if (cciss_hard_reset_controller(pdev) || cciss_reset_msi(pdev)) | |
3897 | return -ENODEV; | |
3898 | ||
5e18cfd0 JA |
3899 | /* Now try to get the controller to respond to a no-op. Some |
3900 | devices (notably the HP Smart Array 5i Controller) need | |
3901 | up to 30 seconds to respond. */ | |
5e4c91c8 | 3902 | for (i=0; i<30; i++) { |
82eb03cf CC |
3903 | if (cciss_noop(pdev) == 0) |
3904 | break; | |
5e4c91c8 JA |
3905 | |
3906 | schedule_timeout_uninterruptible(HZ); | |
3907 | } | |
3908 | if (i == 30) { | |
3909 | printk(KERN_ERR "cciss: controller seems dead\n"); | |
3910 | return -EBUSY; | |
82eb03cf CC |
3911 | } |
3912 | } | |
3913 | ||
1da177e4 | 3914 | i = alloc_cciss_hba(); |
7c832835 | 3915 | if (i < 0) |
e2019b58 | 3916 | return -1; |
1f8ef380 MM |
3917 | |
3918 | hba[i]->busy_initializing = 1; | |
8a3173de JA |
3919 | INIT_HLIST_HEAD(&hba[i]->cmpQ); |
3920 | INIT_HLIST_HEAD(&hba[i]->reqQ); | |
1f8ef380 | 3921 | |
1da177e4 | 3922 | if (cciss_pci_init(hba[i], pdev) != 0) |
7fe06326 | 3923 | goto clean0; |
1da177e4 LT |
3924 | |
3925 | sprintf(hba[i]->devname, "cciss%d", i); | |
3926 | hba[i]->ctlr = i; | |
3927 | hba[i]->pdev = pdev; | |
3928 | ||
7fe06326 AP |
3929 | if (cciss_create_hba_sysfs_entry(hba[i])) |
3930 | goto clean0; | |
3931 | ||
1da177e4 | 3932 | /* configure PCI DMA stuff */ |
6a35528a | 3933 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
40aabb58 | 3934 | dac = 1; |
284901a9 | 3935 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
40aabb58 | 3936 | dac = 0; |
1da177e4 | 3937 | else { |
40aabb58 | 3938 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
3939 | goto clean1; |
3940 | } | |
3941 | ||
3942 | /* | |
3943 | * register with the major number, or get a dynamic major number | |
3944 | * by passing 0 as argument. This is done for greater than | |
3945 | * 8 controller support. | |
3946 | */ | |
3947 | if (i < MAX_CTLR_ORIG) | |
564de74a | 3948 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 3949 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3950 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 3951 | printk(KERN_ERR |
7c832835 BH |
3952 | "cciss: Unable to get major number %d for %s " |
3953 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 3954 | goto clean1; |
7c832835 | 3955 | } else { |
1da177e4 LT |
3956 | if (i >= MAX_CTLR_ORIG) |
3957 | hba[i]->major = rc; | |
3958 | } | |
3959 | ||
3960 | /* make sure the board interrupts are off */ | |
3961 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
7c832835 | 3962 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
69ab3912 | 3963 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
1da177e4 | 3964 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
7c832835 | 3965 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
1da177e4 LT |
3966 | goto clean2; |
3967 | } | |
40aabb58 BH |
3968 | |
3969 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 BH |
3970 | hba[i]->devname, pdev->device, pci_name(pdev), |
3971 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); | |
3972 | ||
3973 | hba[i]->cmd_pool_bits = | |
061837bc JL |
3974 | kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
3975 | * sizeof(unsigned long), GFP_KERNEL); | |
7c832835 BH |
3976 | hba[i]->cmd_pool = (CommandList_struct *) |
3977 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3978 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
3979 | &(hba[i]->cmd_pool_dhandle)); |
3980 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
3981 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3982 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
3983 | &(hba[i]->errinfo_pool_dhandle)); |
3984 | if ((hba[i]->cmd_pool_bits == NULL) | |
3985 | || (hba[i]->cmd_pool == NULL) | |
3986 | || (hba[i]->errinfo_pool == NULL)) { | |
3987 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
3988 | goto clean4; |
3989 | } | |
1da177e4 | 3990 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 3991 | |
7c832835 BH |
3992 | /* Initialize the pdev driver private data. |
3993 | have it point to hba[i]. */ | |
1da177e4 | 3994 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
3995 | /* command and error info recs zeroed out before |
3996 | they are used */ | |
3997 | memset(hba[i]->cmd_pool_bits, 0, | |
061837bc JL |
3998 | DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
3999 | * sizeof(unsigned long)); | |
1da177e4 | 4000 | |
6ae5ce8e MM |
4001 | hba[i]->num_luns = 0; |
4002 | hba[i]->highest_lun = -1; | |
4003 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
4004 | hba[i]->drv[j].raid_level = -1; | |
4005 | hba[i]->drv[j].queue = NULL; | |
4006 | hba[i]->gendisk[j] = NULL; | |
4007 | } | |
1da177e4 LT |
4008 | |
4009 | cciss_scsi_setup(i); | |
4010 | ||
4011 | /* Turn the interrupts on so we can service requests */ | |
4012 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
4013 | ||
22bece00 MM |
4014 | /* Get the firmware version */ |
4015 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
4016 | if (inq_buff == NULL) { | |
4017 | printk(KERN_ERR "cciss: out of memory\n"); | |
4018 | goto clean4; | |
4019 | } | |
4020 | ||
4021 | return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff, | |
b57695fe | 4022 | sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); |
22bece00 MM |
4023 | if (return_code == IO_OK) { |
4024 | hba[i]->firm_ver[0] = inq_buff->data_byte[32]; | |
4025 | hba[i]->firm_ver[1] = inq_buff->data_byte[33]; | |
4026 | hba[i]->firm_ver[2] = inq_buff->data_byte[34]; | |
4027 | hba[i]->firm_ver[3] = inq_buff->data_byte[35]; | |
4028 | } else { /* send command failed */ | |
4029 | printk(KERN_WARNING "cciss: unable to determine firmware" | |
4030 | " version of controller\n"); | |
4031 | } | |
212a5026 | 4032 | kfree(inq_buff); |
22bece00 | 4033 | |
1da177e4 | 4034 | cciss_procinit(i); |
92c4231a MM |
4035 | |
4036 | hba[i]->cciss_max_sectors = 2048; | |
4037 | ||
d6dbf42e | 4038 | hba[i]->busy_initializing = 0; |
1da177e4 | 4039 | |
6ae5ce8e | 4040 | rebuild_lun_table(hba[i], 1); |
0a9279cc MM |
4041 | hba[i]->cciss_scan_thread = kthread_run(scan_thread, hba[i], |
4042 | "cciss_scan%02d", i); | |
4043 | if (IS_ERR(hba[i]->cciss_scan_thread)) | |
4044 | return PTR_ERR(hba[i]->cciss_scan_thread); | |
4045 | ||
e2019b58 | 4046 | return 1; |
1da177e4 | 4047 | |
6ae5ce8e | 4048 | clean4: |
6044ec88 | 4049 | kfree(hba[i]->cmd_pool_bits); |
7c832835 | 4050 | if (hba[i]->cmd_pool) |
1da177e4 | 4051 | pci_free_consistent(hba[i]->pdev, |
f880632f | 4052 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
4053 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
4054 | if (hba[i]->errinfo_pool) | |
1da177e4 | 4055 | pci_free_consistent(hba[i]->pdev, |
f880632f | 4056 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
4057 | hba[i]->errinfo_pool, |
4058 | hba[i]->errinfo_pool_dhandle); | |
fb86a35b | 4059 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
6ae5ce8e | 4060 | clean2: |
1da177e4 | 4061 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
6ae5ce8e | 4062 | clean1: |
7fe06326 AP |
4063 | cciss_destroy_hba_sysfs_entry(hba[i]); |
4064 | clean0: | |
1f8ef380 | 4065 | hba[i]->busy_initializing = 0; |
799202cb MM |
4066 | /* cleanup any queues that may have been initialized */ |
4067 | for (j=0; j <= hba[i]->highest_lun; j++){ | |
4068 | drive_info_struct *drv = &(hba[i]->drv[j]); | |
4069 | if (drv->queue) | |
4070 | blk_cleanup_queue(drv->queue); | |
4071 | } | |
872225ca MM |
4072 | /* |
4073 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4074 | * Smart Array controllers that pci_enable_device does not undo | |
4075 | */ | |
799202cb | 4076 | pci_release_regions(pdev); |
799202cb | 4077 | pci_set_drvdata(pdev, NULL); |
61808c2b | 4078 | free_hba(i); |
e2019b58 | 4079 | return -1; |
1da177e4 LT |
4080 | } |
4081 | ||
e9ca75b5 | 4082 | static void cciss_shutdown(struct pci_dev *pdev) |
1da177e4 LT |
4083 | { |
4084 | ctlr_info_t *tmp_ptr; | |
e9ca75b5 | 4085 | int i; |
1da177e4 | 4086 | char flush_buf[4]; |
7c832835 | 4087 | int return_code; |
1da177e4 | 4088 | |
e9ca75b5 GB |
4089 | tmp_ptr = pci_get_drvdata(pdev); |
4090 | if (tmp_ptr == NULL) | |
4091 | return; | |
4092 | i = tmp_ptr->ctlr; | |
4093 | if (hba[i] == NULL) | |
4094 | return; | |
4095 | ||
4096 | /* Turn board interrupts off and send the flush cache command */ | |
4097 | /* sendcmd will turn off interrupt, and send the flush... | |
4098 | * To write all data in the battery backed cache to disks */ | |
4099 | memset(flush_buf, 0, 4); | |
b57695fe | 4100 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, |
4101 | CTLR_LUNID, TYPE_CMD); | |
e9ca75b5 GB |
4102 | if (return_code == IO_OK) { |
4103 | printk(KERN_INFO "Completed flushing cache on controller %d\n", i); | |
4104 | } else { | |
4105 | printk(KERN_WARNING "Error flushing cache on controller %d\n", i); | |
4106 | } | |
4107 | free_irq(hba[i]->intr[2], hba[i]); | |
4108 | } | |
4109 | ||
4110 | static void __devexit cciss_remove_one(struct pci_dev *pdev) | |
4111 | { | |
4112 | ctlr_info_t *tmp_ptr; | |
4113 | int i, j; | |
4114 | ||
7c832835 BH |
4115 | if (pci_get_drvdata(pdev) == NULL) { |
4116 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
4117 | return; |
4118 | } | |
0a9279cc | 4119 | |
1da177e4 LT |
4120 | tmp_ptr = pci_get_drvdata(pdev); |
4121 | i = tmp_ptr->ctlr; | |
7c832835 | 4122 | if (hba[i] == NULL) { |
1da177e4 | 4123 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 4124 | "already be removed \n"); |
1da177e4 LT |
4125 | return; |
4126 | } | |
b6550777 | 4127 | |
0a9279cc MM |
4128 | kthread_stop(hba[i]->cciss_scan_thread); |
4129 | ||
b6550777 BH |
4130 | remove_proc_entry(hba[i]->devname, proc_cciss); |
4131 | unregister_blkdev(hba[i]->major, hba[i]->devname); | |
4132 | ||
4133 | /* remove it from the disk list */ | |
4134 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
4135 | struct gendisk *disk = hba[i]->gendisk[j]; | |
4136 | if (disk) { | |
165125e1 | 4137 | struct request_queue *q = disk->queue; |
b6550777 BH |
4138 | |
4139 | if (disk->flags & GENHD_FL_UP) | |
4140 | del_gendisk(disk); | |
4141 | if (q) | |
4142 | blk_cleanup_queue(q); | |
4143 | } | |
4144 | } | |
4145 | ||
ba198efb | 4146 | #ifdef CONFIG_CISS_SCSI_TAPE |
b6550777 | 4147 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
ba198efb | 4148 | #endif |
b6550777 | 4149 | |
e9ca75b5 | 4150 | cciss_shutdown(pdev); |
fb86a35b MM |
4151 | |
4152 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
4153 | if (hba[i]->msix_vector) |
4154 | pci_disable_msix(hba[i]->pdev); | |
4155 | else if (hba[i]->msi_vector) | |
4156 | pci_disable_msi(hba[i]->pdev); | |
4157 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 4158 | |
1da177e4 | 4159 | iounmap(hba[i]->vaddr); |
1da177e4 | 4160 | |
f880632f | 4161 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
1da177e4 | 4162 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
f880632f | 4163 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 | 4164 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
1da177e4 | 4165 | kfree(hba[i]->cmd_pool_bits); |
872225ca MM |
4166 | /* |
4167 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4168 | * Smart Array controllers that pci_enable_device does not undo | |
4169 | */ | |
7c832835 | 4170 | pci_release_regions(pdev); |
4e570309 | 4171 | pci_set_drvdata(pdev, NULL); |
7fe06326 | 4172 | cciss_destroy_hba_sysfs_entry(hba[i]); |
1da177e4 | 4173 | free_hba(i); |
7c832835 | 4174 | } |
1da177e4 LT |
4175 | |
4176 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
4177 | .name = "cciss", |
4178 | .probe = cciss_init_one, | |
4179 | .remove = __devexit_p(cciss_remove_one), | |
4180 | .id_table = cciss_pci_device_id, /* id_table */ | |
e9ca75b5 | 4181 | .shutdown = cciss_shutdown, |
1da177e4 LT |
4182 | }; |
4183 | ||
4184 | /* | |
4185 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 4186 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
4187 | */ |
4188 | static int __init cciss_init(void) | |
4189 | { | |
7fe06326 AP |
4190 | int err; |
4191 | ||
10cbda97 JA |
4192 | /* |
4193 | * The hardware requires that commands are aligned on a 64-bit | |
4194 | * boundary. Given that we use pci_alloc_consistent() to allocate an | |
4195 | * array of them, the size must be a multiple of 8 bytes. | |
4196 | */ | |
4197 | BUILD_BUG_ON(sizeof(CommandList_struct) % 8); | |
4198 | ||
1da177e4 LT |
4199 | printk(KERN_INFO DRIVER_NAME "\n"); |
4200 | ||
7fe06326 AP |
4201 | err = bus_register(&cciss_bus_type); |
4202 | if (err) | |
4203 | return err; | |
4204 | ||
1da177e4 | 4205 | /* Register for our PCI devices */ |
7fe06326 AP |
4206 | err = pci_register_driver(&cciss_pci_driver); |
4207 | if (err) | |
4208 | goto err_bus_register; | |
4209 | ||
4210 | return 0; | |
4211 | ||
4212 | err_bus_register: | |
4213 | bus_unregister(&cciss_bus_type); | |
4214 | return err; | |
1da177e4 LT |
4215 | } |
4216 | ||
4217 | static void __exit cciss_cleanup(void) | |
4218 | { | |
4219 | int i; | |
4220 | ||
4221 | pci_unregister_driver(&cciss_pci_driver); | |
4222 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
4223 | for (i = 0; i < MAX_CTLR; i++) { |
4224 | if (hba[i] != NULL) { | |
1da177e4 | 4225 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 4226 | " controller %d\n", i); |
1da177e4 LT |
4227 | cciss_remove_one(hba[i]->pdev); |
4228 | } | |
4229 | } | |
928b4d8c | 4230 | remove_proc_entry("driver/cciss", NULL); |
7fe06326 | 4231 | bus_unregister(&cciss_bus_type); |
1da177e4 LT |
4232 | } |
4233 | ||
33079b21 MM |
4234 | static void fail_all_cmds(unsigned long ctlr) |
4235 | { | |
4236 | /* If we get here, the board is apparently dead. */ | |
4237 | ctlr_info_t *h = hba[ctlr]; | |
4238 | CommandList_struct *c; | |
4239 | unsigned long flags; | |
4240 | ||
4241 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); | |
7c832835 | 4242 | h->alive = 0; /* the controller apparently died... */ |
33079b21 MM |
4243 | |
4244 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
4245 | ||
7c832835 | 4246 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
33079b21 MM |
4247 | |
4248 | /* move everything off the request queue onto the completed queue */ | |
8a3173de JA |
4249 | while (!hlist_empty(&h->reqQ)) { |
4250 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); | |
4251 | removeQ(c); | |
33079b21 | 4252 | h->Qdepth--; |
8a3173de | 4253 | addQ(&h->cmpQ, c); |
33079b21 MM |
4254 | } |
4255 | ||
4256 | /* Now, fail everything on the completed queue with a HW error */ | |
8a3173de JA |
4257 | while (!hlist_empty(&h->cmpQ)) { |
4258 | c = hlist_entry(h->cmpQ.first, CommandList_struct, list); | |
4259 | removeQ(c); | |
b59e64d0 HR |
4260 | if (c->cmd_type != CMD_MSG_STALE) |
4261 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
33079b21 MM |
4262 | if (c->cmd_type == CMD_RWREQ) { |
4263 | complete_command(h, c, 0); | |
4264 | } else if (c->cmd_type == CMD_IOCTL_PEND) | |
4265 | complete(c->waiting); | |
4266 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
4267 | else if (c->cmd_type == CMD_SCSI) |
4268 | complete_scsi_command(c, 0, 0); | |
33079b21 MM |
4269 | #endif |
4270 | } | |
4271 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
4272 | return; | |
4273 | } | |
4274 | ||
1da177e4 LT |
4275 | module_init(cciss_init); |
4276 | module_exit(cciss_cleanup); |