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Commit | Line | Data |
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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> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/major.h> | |
31 | #include <linux/fs.h> | |
32 | #include <linux/bio.h> | |
33 | #include <linux/blkpg.h> | |
34 | #include <linux/timer.h> | |
35 | #include <linux/proc_fs.h> | |
89b6e743 | 36 | #include <linux/seq_file.h> |
7c832835 | 37 | #include <linux/init.h> |
1da177e4 LT |
38 | #include <linux/hdreg.h> |
39 | #include <linux/spinlock.h> | |
40 | #include <linux/compat.h> | |
2056a782 | 41 | #include <linux/blktrace_api.h> |
1da177e4 LT |
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, | |
183 | unsigned int use_unit_num, unsigned int log_unit, | |
184 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); | |
185 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, | |
186 | unsigned int use_unit_num, unsigned int log_unit, | |
187 | __u8 page_code, int cmd_type); | |
1da177e4 | 188 | |
33079b21 | 189 | static void fail_all_cmds(unsigned long ctlr); |
0a9279cc MM |
190 | static int scan_thread(void *data); |
191 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c); | |
33079b21 | 192 | |
1da177e4 | 193 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
194 | static void cciss_procinit(int i); |
195 | #else | |
7c832835 BH |
196 | static void cciss_procinit(int i) |
197 | { | |
198 | } | |
199 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
200 | |
201 | #ifdef CONFIG_COMPAT | |
ef7822c2 AV |
202 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
203 | unsigned, unsigned long); | |
1da177e4 LT |
204 | #endif |
205 | ||
7c832835 BH |
206 | static struct block_device_operations cciss_fops = { |
207 | .owner = THIS_MODULE, | |
ef7822c2 AV |
208 | .open = cciss_open, |
209 | .release = cciss_release, | |
210 | .locked_ioctl = cciss_ioctl, | |
7c832835 | 211 | .getgeo = cciss_getgeo, |
1da177e4 | 212 | #ifdef CONFIG_COMPAT |
ef7822c2 | 213 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 214 | #endif |
7c832835 | 215 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
216 | }; |
217 | ||
218 | /* | |
219 | * Enqueuing and dequeuing functions for cmdlists. | |
220 | */ | |
8a3173de | 221 | static inline void addQ(struct hlist_head *list, CommandList_struct *c) |
1da177e4 | 222 | { |
8a3173de | 223 | hlist_add_head(&c->list, list); |
1da177e4 LT |
224 | } |
225 | ||
8a3173de | 226 | static inline void removeQ(CommandList_struct *c) |
1da177e4 | 227 | { |
8a3173de JA |
228 | if (WARN_ON(hlist_unhashed(&c->list))) |
229 | return; | |
230 | ||
231 | hlist_del_init(&c->list); | |
1da177e4 LT |
232 | } |
233 | ||
234 | #include "cciss_scsi.c" /* For SCSI tape support */ | |
235 | ||
0f5486ec RD |
236 | #define RAID_UNKNOWN 6 |
237 | ||
1da177e4 LT |
238 | #ifdef CONFIG_PROC_FS |
239 | ||
240 | /* | |
241 | * Report information about this controller. | |
242 | */ | |
243 | #define ENG_GIG 1000000000 | |
244 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
89b6e743 | 245 | #define ENGAGE_SCSI "engage scsi" |
7c832835 BH |
246 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
247 | "UNKNOWN" | |
248 | }; | |
1da177e4 LT |
249 | |
250 | static struct proc_dir_entry *proc_cciss; | |
251 | ||
89b6e743 | 252 | static void cciss_seq_show_header(struct seq_file *seq) |
1da177e4 | 253 | { |
89b6e743 MM |
254 | ctlr_info_t *h = seq->private; |
255 | ||
256 | seq_printf(seq, "%s: HP %s Controller\n" | |
257 | "Board ID: 0x%08lx\n" | |
258 | "Firmware Version: %c%c%c%c\n" | |
259 | "IRQ: %d\n" | |
260 | "Logical drives: %d\n" | |
261 | "Current Q depth: %d\n" | |
262 | "Current # commands on controller: %d\n" | |
263 | "Max Q depth since init: %d\n" | |
264 | "Max # commands on controller since init: %d\n" | |
265 | "Max SG entries since init: %d\n", | |
266 | h->devname, | |
267 | h->product_name, | |
268 | (unsigned long)h->board_id, | |
269 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
270 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], | |
271 | h->num_luns, | |
272 | h->Qdepth, h->commands_outstanding, | |
273 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
274 | ||
275 | #ifdef CONFIG_CISS_SCSI_TAPE | |
276 | cciss_seq_tape_report(seq, h->ctlr); | |
277 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
278 | } | |
1da177e4 | 279 | |
89b6e743 MM |
280 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
281 | { | |
282 | ctlr_info_t *h = seq->private; | |
283 | unsigned ctlr = h->ctlr; | |
284 | unsigned long flags; | |
1da177e4 LT |
285 | |
286 | /* prevent displaying bogus info during configuration | |
287 | * or deconfiguration of a logical volume | |
288 | */ | |
289 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
290 | if (h->busy_configuring) { | |
291 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
89b6e743 | 292 | return ERR_PTR(-EBUSY); |
1da177e4 LT |
293 | } |
294 | h->busy_configuring = 1; | |
295 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
296 | ||
89b6e743 MM |
297 | if (*pos == 0) |
298 | cciss_seq_show_header(seq); | |
299 | ||
300 | return pos; | |
301 | } | |
302 | ||
303 | static int cciss_seq_show(struct seq_file *seq, void *v) | |
304 | { | |
305 | sector_t vol_sz, vol_sz_frac; | |
306 | ctlr_info_t *h = seq->private; | |
307 | unsigned ctlr = h->ctlr; | |
308 | loff_t *pos = v; | |
309 | drive_info_struct *drv = &h->drv[*pos]; | |
310 | ||
311 | if (*pos > h->highest_lun) | |
312 | return 0; | |
313 | ||
314 | if (drv->heads == 0) | |
315 | return 0; | |
316 | ||
317 | vol_sz = drv->nr_blocks; | |
318 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
319 | vol_sz_frac *= 100; | |
320 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
321 | ||
322 | if (drv->raid_level > 5) | |
323 | drv->raid_level = RAID_UNKNOWN; | |
324 | seq_printf(seq, "cciss/c%dd%d:" | |
325 | "\t%4u.%02uGB\tRAID %s\n", | |
326 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, | |
327 | raid_label[drv->raid_level]); | |
328 | return 0; | |
329 | } | |
330 | ||
331 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
332 | { | |
333 | ctlr_info_t *h = seq->private; | |
334 | ||
335 | if (*pos > h->highest_lun) | |
336 | return NULL; | |
337 | *pos += 1; | |
338 | ||
339 | return pos; | |
340 | } | |
341 | ||
342 | static void cciss_seq_stop(struct seq_file *seq, void *v) | |
343 | { | |
344 | ctlr_info_t *h = seq->private; | |
345 | ||
346 | /* Only reset h->busy_configuring if we succeeded in setting | |
347 | * it during cciss_seq_start. */ | |
348 | if (v == ERR_PTR(-EBUSY)) | |
349 | return; | |
7c832835 | 350 | |
1da177e4 | 351 | h->busy_configuring = 0; |
1da177e4 LT |
352 | } |
353 | ||
89b6e743 MM |
354 | static struct seq_operations cciss_seq_ops = { |
355 | .start = cciss_seq_start, | |
356 | .show = cciss_seq_show, | |
357 | .next = cciss_seq_next, | |
358 | .stop = cciss_seq_stop, | |
359 | }; | |
360 | ||
361 | static int cciss_seq_open(struct inode *inode, struct file *file) | |
362 | { | |
363 | int ret = seq_open(file, &cciss_seq_ops); | |
364 | struct seq_file *seq = file->private_data; | |
365 | ||
366 | if (!ret) | |
367 | seq->private = PDE(inode)->data; | |
368 | ||
369 | return ret; | |
370 | } | |
371 | ||
372 | static ssize_t | |
373 | cciss_proc_write(struct file *file, const char __user *buf, | |
374 | size_t length, loff_t *ppos) | |
1da177e4 | 375 | { |
89b6e743 MM |
376 | int err; |
377 | char *buffer; | |
378 | ||
379 | #ifndef CONFIG_CISS_SCSI_TAPE | |
380 | return -EINVAL; | |
1da177e4 LT |
381 | #endif |
382 | ||
89b6e743 | 383 | if (!buf || length > PAGE_SIZE - 1) |
7c832835 | 384 | return -EINVAL; |
89b6e743 MM |
385 | |
386 | buffer = (char *)__get_free_page(GFP_KERNEL); | |
387 | if (!buffer) | |
388 | return -ENOMEM; | |
389 | ||
390 | err = -EFAULT; | |
391 | if (copy_from_user(buffer, buf, length)) | |
392 | goto out; | |
393 | buffer[length] = '\0'; | |
394 | ||
395 | #ifdef CONFIG_CISS_SCSI_TAPE | |
396 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { | |
397 | struct seq_file *seq = file->private_data; | |
398 | ctlr_info_t *h = seq->private; | |
399 | int rc; | |
400 | ||
7c832835 BH |
401 | rc = cciss_engage_scsi(h->ctlr); |
402 | if (rc != 0) | |
89b6e743 MM |
403 | err = -rc; |
404 | else | |
405 | err = length; | |
406 | } else | |
407 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
408 | err = -EINVAL; | |
7c832835 BH |
409 | /* might be nice to have "disengage" too, but it's not |
410 | safely possible. (only 1 module use count, lock issues.) */ | |
89b6e743 MM |
411 | |
412 | out: | |
413 | free_page((unsigned long)buffer); | |
414 | return err; | |
1da177e4 LT |
415 | } |
416 | ||
89b6e743 MM |
417 | static struct file_operations cciss_proc_fops = { |
418 | .owner = THIS_MODULE, | |
419 | .open = cciss_seq_open, | |
420 | .read = seq_read, | |
421 | .llseek = seq_lseek, | |
422 | .release = seq_release, | |
423 | .write = cciss_proc_write, | |
424 | }; | |
425 | ||
1da177e4 LT |
426 | static void __devinit cciss_procinit(int i) |
427 | { | |
428 | struct proc_dir_entry *pde; | |
429 | ||
89b6e743 | 430 | if (proc_cciss == NULL) |
928b4d8c | 431 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
89b6e743 MM |
432 | if (!proc_cciss) |
433 | return; | |
3dfcf9c4 | 434 | pde = proc_create_data(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
89b6e743 | 435 | S_IROTH, proc_cciss, |
3dfcf9c4 | 436 | &cciss_proc_fops, hba[i]); |
1da177e4 | 437 | } |
7c832835 | 438 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 439 | |
7c832835 BH |
440 | /* |
441 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 442 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
443 | * which ones are free or in use. For operations that can wait for kmalloc |
444 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
445 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
446 | */ | |
447 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
448 | { |
449 | CommandList_struct *c; | |
7c832835 | 450 | int i; |
1da177e4 LT |
451 | u64bit temp64; |
452 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
453 | ||
7c832835 BH |
454 | if (!get_from_pool) { |
455 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
456 | sizeof(CommandList_struct), &cmd_dma_handle); | |
457 | if (c == NULL) | |
458 | return NULL; | |
1da177e4 LT |
459 | memset(c, 0, sizeof(CommandList_struct)); |
460 | ||
33079b21 MM |
461 | c->cmdindex = -1; |
462 | ||
7c832835 BH |
463 | c->err_info = (ErrorInfo_struct *) |
464 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
465 | &err_dma_handle); | |
466 | ||
467 | if (c->err_info == NULL) { | |
468 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
469 | sizeof(CommandList_struct), c, cmd_dma_handle); |
470 | return NULL; | |
471 | } | |
472 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
473 | } else { /* get it out of the controllers pool */ |
474 | ||
475 | do { | |
f880632f MM |
476 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
477 | if (i == h->nr_cmds) | |
7c832835 BH |
478 | return NULL; |
479 | } while (test_and_set_bit | |
480 | (i & (BITS_PER_LONG - 1), | |
481 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
482 | #ifdef CCISS_DEBUG |
483 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
484 | #endif | |
7c832835 | 485 | c = h->cmd_pool + i; |
1da177e4 | 486 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
487 | cmd_dma_handle = h->cmd_pool_dhandle |
488 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
489 | c->err_info = h->errinfo_pool + i; |
490 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
491 | err_dma_handle = h->errinfo_pool_dhandle |
492 | + i * sizeof(ErrorInfo_struct); | |
493 | h->nr_allocs++; | |
33079b21 MM |
494 | |
495 | c->cmdindex = i; | |
7c832835 | 496 | } |
1da177e4 | 497 | |
8a3173de | 498 | INIT_HLIST_NODE(&c->list); |
1da177e4 | 499 | c->busaddr = (__u32) cmd_dma_handle; |
7c832835 | 500 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
501 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
502 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
503 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 504 | |
7c832835 BH |
505 | c->ctlr = h->ctlr; |
506 | return c; | |
1da177e4 LT |
507 | } |
508 | ||
7c832835 BH |
509 | /* |
510 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
511 | */ |
512 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
513 | { | |
514 | int i; | |
515 | u64bit temp64; | |
516 | ||
7c832835 | 517 | if (!got_from_pool) { |
1da177e4 LT |
518 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
519 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
520 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
521 | c->err_info, (dma_addr_t) temp64.val); | |
522 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
523 | c, (dma_addr_t) c->busaddr); | |
524 | } else { | |
1da177e4 | 525 | i = c - h->cmd_pool; |
7c832835 BH |
526 | clear_bit(i & (BITS_PER_LONG - 1), |
527 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
528 | h->nr_frees++; | |
529 | } | |
1da177e4 LT |
530 | } |
531 | ||
532 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
533 | { | |
7c832835 | 534 | return disk->queue->queuedata; |
1da177e4 LT |
535 | } |
536 | ||
537 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
538 | { | |
539 | return disk->private_data; | |
540 | } | |
541 | ||
542 | /* | |
543 | * Open. Make sure the device is really there. | |
544 | */ | |
ef7822c2 | 545 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
1da177e4 | 546 | { |
ef7822c2 AV |
547 | ctlr_info_t *host = get_host(bdev->bd_disk); |
548 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1da177e4 LT |
549 | |
550 | #ifdef CCISS_DEBUG | |
ef7822c2 | 551 | printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name); |
7c832835 | 552 | #endif /* CCISS_DEBUG */ |
1da177e4 | 553 | |
ddd47442 MM |
554 | if (host->busy_initializing || drv->busy_configuring) |
555 | return -EBUSY; | |
1da177e4 LT |
556 | /* |
557 | * Root is allowed to open raw volume zero even if it's not configured | |
558 | * so array config can still work. Root is also allowed to open any | |
559 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
560 | * disk information. I don't think I really like this | |
561 | * but I'm already using way to many device nodes to claim another one | |
562 | * for "raw controller". | |
563 | */ | |
7a06f789 | 564 | if (drv->heads == 0) { |
ef7822c2 | 565 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
1da177e4 | 566 | /* if not node 0 make sure it is a partition = 0 */ |
ef7822c2 | 567 | if (MINOR(bdev->bd_dev) & 0x0f) { |
7c832835 | 568 | return -ENXIO; |
1da177e4 LT |
569 | /* if it is, make sure we have a LUN ID */ |
570 | } else if (drv->LunID == 0) { | |
571 | return -ENXIO; | |
572 | } | |
573 | } | |
574 | if (!capable(CAP_SYS_ADMIN)) | |
575 | return -EPERM; | |
576 | } | |
577 | drv->usage_count++; | |
578 | host->usage_count++; | |
579 | return 0; | |
580 | } | |
7c832835 | 581 | |
1da177e4 LT |
582 | /* |
583 | * Close. Sync first. | |
584 | */ | |
ef7822c2 | 585 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
1da177e4 | 586 | { |
ef7822c2 AV |
587 | ctlr_info_t *host = get_host(disk); |
588 | drive_info_struct *drv = get_drv(disk); | |
1da177e4 LT |
589 | |
590 | #ifdef CCISS_DEBUG | |
ef7822c2 | 591 | printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name); |
7c832835 | 592 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
593 | |
594 | drv->usage_count--; | |
595 | host->usage_count--; | |
596 | return 0; | |
597 | } | |
598 | ||
599 | #ifdef CONFIG_COMPAT | |
600 | ||
ef7822c2 AV |
601 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
602 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
603 | { |
604 | int ret; | |
605 | lock_kernel(); | |
ef7822c2 | 606 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
607 | unlock_kernel(); |
608 | return ret; | |
609 | } | |
610 | ||
ef7822c2 AV |
611 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
612 | unsigned cmd, unsigned long arg); | |
613 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, | |
614 | unsigned cmd, unsigned long arg); | |
1da177e4 | 615 | |
ef7822c2 AV |
616 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
617 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
618 | { |
619 | switch (cmd) { | |
620 | case CCISS_GETPCIINFO: | |
621 | case CCISS_GETINTINFO: | |
622 | case CCISS_SETINTINFO: | |
623 | case CCISS_GETNODENAME: | |
624 | case CCISS_SETNODENAME: | |
625 | case CCISS_GETHEARTBEAT: | |
626 | case CCISS_GETBUSTYPES: | |
627 | case CCISS_GETFIRMVER: | |
628 | case CCISS_GETDRIVVER: | |
629 | case CCISS_REVALIDVOLS: | |
630 | case CCISS_DEREGDISK: | |
631 | case CCISS_REGNEWDISK: | |
632 | case CCISS_REGNEWD: | |
633 | case CCISS_RESCANDISK: | |
634 | case CCISS_GETLUNINFO: | |
ef7822c2 | 635 | return do_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
636 | |
637 | case CCISS_PASSTHRU32: | |
ef7822c2 | 638 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
1da177e4 | 639 | case CCISS_BIG_PASSTHRU32: |
ef7822c2 | 640 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
1da177e4 LT |
641 | |
642 | default: | |
643 | return -ENOIOCTLCMD; | |
644 | } | |
645 | } | |
646 | ||
ef7822c2 AV |
647 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
648 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
649 | { |
650 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 651 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
652 | IOCTL_Command_struct arg64; |
653 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
654 | int err; | |
655 | u32 cp; | |
656 | ||
657 | err = 0; | |
7c832835 BH |
658 | err |= |
659 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
660 | sizeof(arg64.LUN_info)); | |
661 | err |= | |
662 | copy_from_user(&arg64.Request, &arg32->Request, | |
663 | sizeof(arg64.Request)); | |
664 | err |= | |
665 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
666 | sizeof(arg64.error_info)); | |
1da177e4 LT |
667 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
668 | err |= get_user(cp, &arg32->buf); | |
669 | arg64.buf = compat_ptr(cp); | |
670 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
671 | ||
672 | if (err) | |
673 | return -EFAULT; | |
674 | ||
ef7822c2 | 675 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
676 | if (err) |
677 | return err; | |
7c832835 BH |
678 | err |= |
679 | copy_in_user(&arg32->error_info, &p->error_info, | |
680 | sizeof(arg32->error_info)); | |
1da177e4 LT |
681 | if (err) |
682 | return -EFAULT; | |
683 | return err; | |
684 | } | |
685 | ||
ef7822c2 AV |
686 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
687 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
688 | { |
689 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 690 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 691 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
692 | BIG_IOCTL_Command_struct __user *p = |
693 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
694 | int err; |
695 | u32 cp; | |
696 | ||
697 | err = 0; | |
7c832835 BH |
698 | err |= |
699 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
700 | sizeof(arg64.LUN_info)); | |
701 | err |= | |
702 | copy_from_user(&arg64.Request, &arg32->Request, | |
703 | sizeof(arg64.Request)); | |
704 | err |= | |
705 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
706 | sizeof(arg64.error_info)); | |
1da177e4 LT |
707 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
708 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
709 | err |= get_user(cp, &arg32->buf); | |
710 | arg64.buf = compat_ptr(cp); | |
711 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
712 | ||
713 | if (err) | |
7c832835 | 714 | return -EFAULT; |
1da177e4 | 715 | |
ef7822c2 | 716 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
717 | if (err) |
718 | return err; | |
7c832835 BH |
719 | err |= |
720 | copy_in_user(&arg32->error_info, &p->error_info, | |
721 | sizeof(arg32->error_info)); | |
1da177e4 LT |
722 | if (err) |
723 | return -EFAULT; | |
724 | return err; | |
725 | } | |
726 | #endif | |
a885c8c4 CH |
727 | |
728 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
729 | { | |
730 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
731 | ||
732 | if (!drv->cylinders) | |
733 | return -ENXIO; | |
734 | ||
735 | geo->heads = drv->heads; | |
736 | geo->sectors = drv->sectors; | |
737 | geo->cylinders = drv->cylinders; | |
738 | return 0; | |
739 | } | |
740 | ||
0a9279cc MM |
741 | static void check_ioctl_unit_attention(ctlr_info_t *host, CommandList_struct *c) |
742 | { | |
743 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
744 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) | |
745 | (void)check_for_unit_attention(host, c); | |
746 | } | |
1da177e4 | 747 | /* |
7c832835 | 748 | * ioctl |
1da177e4 | 749 | */ |
ef7822c2 | 750 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
7c832835 | 751 | unsigned int cmd, unsigned long arg) |
1da177e4 | 752 | { |
1da177e4 LT |
753 | struct gendisk *disk = bdev->bd_disk; |
754 | ctlr_info_t *host = get_host(disk); | |
755 | drive_info_struct *drv = get_drv(disk); | |
756 | int ctlr = host->ctlr; | |
757 | void __user *argp = (void __user *)arg; | |
758 | ||
759 | #ifdef CCISS_DEBUG | |
760 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
761 | #endif /* CCISS_DEBUG */ |
762 | ||
763 | switch (cmd) { | |
1da177e4 | 764 | case CCISS_GETPCIINFO: |
7c832835 BH |
765 | { |
766 | cciss_pci_info_struct pciinfo; | |
767 | ||
768 | if (!arg) | |
769 | return -EINVAL; | |
770 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
771 | pciinfo.bus = host->pdev->bus->number; | |
772 | pciinfo.dev_fn = host->pdev->devfn; | |
773 | pciinfo.board_id = host->board_id; | |
774 | if (copy_to_user | |
775 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
776 | return -EFAULT; | |
777 | return 0; | |
778 | } | |
1da177e4 | 779 | case CCISS_GETINTINFO: |
7c832835 BH |
780 | { |
781 | cciss_coalint_struct intinfo; | |
782 | if (!arg) | |
783 | return -EINVAL; | |
784 | intinfo.delay = | |
785 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
786 | intinfo.count = | |
787 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
788 | if (copy_to_user | |
789 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
790 | return -EFAULT; | |
791 | return 0; | |
792 | } | |
1da177e4 | 793 | case CCISS_SETINTINFO: |
1da177e4 | 794 | { |
7c832835 BH |
795 | cciss_coalint_struct intinfo; |
796 | unsigned long flags; | |
797 | int i; | |
798 | ||
799 | if (!arg) | |
800 | return -EINVAL; | |
801 | if (!capable(CAP_SYS_ADMIN)) | |
802 | return -EPERM; | |
803 | if (copy_from_user | |
804 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
805 | return -EFAULT; | |
806 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
807 | { | |
808 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
809 | return -EINVAL; | |
810 | } | |
811 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
812 | /* Update the field, and then ring the doorbell */ | |
813 | writel(intinfo.delay, | |
814 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
815 | writel(intinfo.count, | |
816 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
817 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
818 | ||
819 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
820 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
821 | & CFGTBL_ChangeReq)) | |
822 | break; | |
823 | /* delay and try again */ | |
824 | udelay(1000); | |
825 | } | |
826 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
827 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
828 | return -EAGAIN; | |
829 | return 0; | |
1da177e4 | 830 | } |
1da177e4 | 831 | case CCISS_GETNODENAME: |
7c832835 BH |
832 | { |
833 | NodeName_type NodeName; | |
834 | int i; | |
835 | ||
836 | if (!arg) | |
837 | return -EINVAL; | |
838 | for (i = 0; i < 16; i++) | |
839 | NodeName[i] = | |
840 | readb(&host->cfgtable->ServerName[i]); | |
841 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
842 | return -EFAULT; | |
843 | return 0; | |
844 | } | |
1da177e4 | 845 | case CCISS_SETNODENAME: |
7c832835 BH |
846 | { |
847 | NodeName_type NodeName; | |
848 | unsigned long flags; | |
849 | int i; | |
850 | ||
851 | if (!arg) | |
852 | return -EINVAL; | |
853 | if (!capable(CAP_SYS_ADMIN)) | |
854 | return -EPERM; | |
855 | ||
856 | if (copy_from_user | |
857 | (NodeName, argp, sizeof(NodeName_type))) | |
858 | return -EFAULT; | |
859 | ||
860 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
861 | ||
862 | /* Update the field, and then ring the doorbell */ | |
863 | for (i = 0; i < 16; i++) | |
864 | writeb(NodeName[i], | |
865 | &host->cfgtable->ServerName[i]); | |
866 | ||
867 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
868 | ||
869 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
870 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
871 | & CFGTBL_ChangeReq)) | |
872 | break; | |
873 | /* delay and try again */ | |
874 | udelay(1000); | |
875 | } | |
876 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
877 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
878 | return -EAGAIN; | |
879 | return 0; | |
880 | } | |
1da177e4 LT |
881 | |
882 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
883 | { |
884 | Heartbeat_type heartbeat; | |
885 | ||
886 | if (!arg) | |
887 | return -EINVAL; | |
888 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
889 | if (copy_to_user | |
890 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
891 | return -EFAULT; | |
892 | return 0; | |
893 | } | |
1da177e4 | 894 | case CCISS_GETBUSTYPES: |
7c832835 BH |
895 | { |
896 | BusTypes_type BusTypes; | |
897 | ||
898 | if (!arg) | |
899 | return -EINVAL; | |
900 | BusTypes = readl(&host->cfgtable->BusTypes); | |
901 | if (copy_to_user | |
902 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
903 | return -EFAULT; | |
904 | return 0; | |
905 | } | |
1da177e4 | 906 | case CCISS_GETFIRMVER: |
7c832835 BH |
907 | { |
908 | FirmwareVer_type firmware; | |
1da177e4 | 909 | |
7c832835 BH |
910 | if (!arg) |
911 | return -EINVAL; | |
912 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 913 | |
7c832835 BH |
914 | if (copy_to_user |
915 | (argp, firmware, sizeof(FirmwareVer_type))) | |
916 | return -EFAULT; | |
917 | return 0; | |
918 | } | |
919 | case CCISS_GETDRIVVER: | |
920 | { | |
921 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 922 | |
7c832835 BH |
923 | if (!arg) |
924 | return -EINVAL; | |
1da177e4 | 925 | |
7c832835 BH |
926 | if (copy_to_user |
927 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
928 | return -EFAULT; | |
929 | return 0; | |
930 | } | |
1da177e4 | 931 | |
6ae5ce8e MM |
932 | case CCISS_DEREGDISK: |
933 | case CCISS_REGNEWD: | |
1da177e4 | 934 | case CCISS_REVALIDVOLS: |
6ae5ce8e | 935 | return rebuild_lun_table(host, 0); |
7c832835 BH |
936 | |
937 | case CCISS_GETLUNINFO:{ | |
938 | LogvolInfo_struct luninfo; | |
939 | ||
940 | luninfo.LunID = drv->LunID; | |
941 | luninfo.num_opens = drv->usage_count; | |
942 | luninfo.num_parts = 0; | |
943 | if (copy_to_user(argp, &luninfo, | |
944 | sizeof(LogvolInfo_struct))) | |
945 | return -EFAULT; | |
946 | return 0; | |
947 | } | |
1da177e4 | 948 | case CCISS_PASSTHRU: |
1da177e4 | 949 | { |
7c832835 BH |
950 | IOCTL_Command_struct iocommand; |
951 | CommandList_struct *c; | |
952 | char *buff = NULL; | |
953 | u64bit temp64; | |
954 | unsigned long flags; | |
6e9a4738 | 955 | DECLARE_COMPLETION_ONSTACK(wait); |
1da177e4 | 956 | |
7c832835 BH |
957 | if (!arg) |
958 | return -EINVAL; | |
1da177e4 | 959 | |
7c832835 BH |
960 | if (!capable(CAP_SYS_RAWIO)) |
961 | return -EPERM; | |
1da177e4 | 962 | |
7c832835 BH |
963 | if (copy_from_user |
964 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
965 | return -EFAULT; | |
966 | if ((iocommand.buf_size < 1) && | |
967 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
968 | return -EINVAL; | |
969 | } | |
970 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
971 | /* Check kmalloc limits */ | |
972 | if (iocommand.buf_size > 128000) | |
973 | return -EINVAL; | |
974 | #endif | |
975 | if (iocommand.buf_size > 0) { | |
976 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
977 | if (buff == NULL) | |
978 | return -EFAULT; | |
979 | } | |
980 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
981 | /* Copy the data into the buffer we created */ | |
982 | if (copy_from_user | |
983 | (buff, iocommand.buf, iocommand.buf_size)) { | |
984 | kfree(buff); | |
985 | return -EFAULT; | |
986 | } | |
987 | } else { | |
988 | memset(buff, 0, iocommand.buf_size); | |
989 | } | |
990 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
991 | kfree(buff); | |
992 | return -ENOMEM; | |
993 | } | |
994 | // Fill in the command type | |
995 | c->cmd_type = CMD_IOCTL_PEND; | |
996 | // Fill in Command Header | |
997 | c->Header.ReplyQueue = 0; // unused in simple mode | |
998 | if (iocommand.buf_size > 0) // buffer to fill | |
999 | { | |
1000 | c->Header.SGList = 1; | |
1001 | c->Header.SGTotal = 1; | |
1002 | } else // no buffers to fill | |
1003 | { | |
1004 | c->Header.SGList = 0; | |
1005 | c->Header.SGTotal = 0; | |
1006 | } | |
1007 | c->Header.LUN = iocommand.LUN_info; | |
1008 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag | |
1da177e4 | 1009 | |
7c832835 BH |
1010 | // Fill in Request block |
1011 | c->Request = iocommand.Request; | |
1da177e4 | 1012 | |
7c832835 BH |
1013 | // Fill in the scatter gather information |
1014 | if (iocommand.buf_size > 0) { | |
1015 | temp64.val = pci_map_single(host->pdev, buff, | |
1016 | iocommand.buf_size, | |
1017 | PCI_DMA_BIDIRECTIONAL); | |
1018 | c->SG[0].Addr.lower = temp64.val32.lower; | |
1019 | c->SG[0].Addr.upper = temp64.val32.upper; | |
1020 | c->SG[0].Len = iocommand.buf_size; | |
1021 | c->SG[0].Ext = 0; // we are not chaining | |
1022 | } | |
1023 | c->waiting = &wait; | |
1024 | ||
1025 | /* Put the request on the tail of the request queue */ | |
1026 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1027 | addQ(&host->reqQ, c); | |
1028 | host->Qdepth++; | |
1029 | start_io(host); | |
1030 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1031 | ||
1032 | wait_for_completion(&wait); | |
1033 | ||
1034 | /* unlock the buffers from DMA */ | |
1035 | temp64.val32.lower = c->SG[0].Addr.lower; | |
1036 | temp64.val32.upper = c->SG[0].Addr.upper; | |
1037 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
1038 | iocommand.buf_size, | |
1039 | PCI_DMA_BIDIRECTIONAL); | |
1040 | ||
0a9279cc MM |
1041 | check_ioctl_unit_attention(host, c); |
1042 | ||
7c832835 BH |
1043 | /* Copy the error information out */ |
1044 | iocommand.error_info = *(c->err_info); | |
1045 | if (copy_to_user | |
1046 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
1047 | kfree(buff); | |
1da177e4 LT |
1048 | cmd_free(host, c, 0); |
1049 | return -EFAULT; | |
1050 | } | |
7c832835 BH |
1051 | |
1052 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
1053 | /* Copy the data out of the buffer we created */ | |
1054 | if (copy_to_user | |
1055 | (iocommand.buf, buff, iocommand.buf_size)) { | |
1056 | kfree(buff); | |
1057 | cmd_free(host, c, 0); | |
1058 | return -EFAULT; | |
1059 | } | |
1060 | } | |
1061 | kfree(buff); | |
1062 | cmd_free(host, c, 0); | |
1063 | return 0; | |
1da177e4 | 1064 | } |
7c832835 BH |
1065 | case CCISS_BIG_PASSTHRU:{ |
1066 | BIG_IOCTL_Command_struct *ioc; | |
1067 | CommandList_struct *c; | |
1068 | unsigned char **buff = NULL; | |
1069 | int *buff_size = NULL; | |
1070 | u64bit temp64; | |
1071 | unsigned long flags; | |
1072 | BYTE sg_used = 0; | |
1073 | int status = 0; | |
1074 | int i; | |
6e9a4738 | 1075 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1076 | __u32 left; |
1077 | __u32 sz; | |
1078 | BYTE __user *data_ptr; | |
1079 | ||
1080 | if (!arg) | |
1081 | return -EINVAL; | |
1082 | if (!capable(CAP_SYS_RAWIO)) | |
1083 | return -EPERM; | |
1084 | ioc = (BIG_IOCTL_Command_struct *) | |
1085 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1086 | if (!ioc) { | |
1087 | status = -ENOMEM; | |
1088 | goto cleanup1; | |
1089 | } | |
1090 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1091 | status = -EFAULT; | |
1092 | goto cleanup1; | |
1093 | } | |
1094 | if ((ioc->buf_size < 1) && | |
1095 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1096 | status = -EINVAL; |
1097 | goto cleanup1; | |
7c832835 BH |
1098 | } |
1099 | /* Check kmalloc limits using all SGs */ | |
1100 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1101 | status = -EINVAL; | |
1102 | goto cleanup1; | |
1103 | } | |
1104 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1105 | status = -EINVAL; | |
1106 | goto cleanup1; | |
1107 | } | |
1108 | buff = | |
1109 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1110 | if (!buff) { | |
1da177e4 LT |
1111 | status = -ENOMEM; |
1112 | goto cleanup1; | |
1113 | } | |
5cbded58 | 1114 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
7c832835 BH |
1115 | GFP_KERNEL); |
1116 | if (!buff_size) { | |
1117 | status = -ENOMEM; | |
1118 | goto cleanup1; | |
1119 | } | |
1120 | left = ioc->buf_size; | |
1121 | data_ptr = ioc->buf; | |
1122 | while (left) { | |
1123 | sz = (left > | |
1124 | ioc->malloc_size) ? ioc-> | |
1125 | malloc_size : left; | |
1126 | buff_size[sg_used] = sz; | |
1127 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1128 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1129 | status = -ENOMEM; |
15534d38 JA |
1130 | goto cleanup1; |
1131 | } | |
7c832835 BH |
1132 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1133 | if (copy_from_user | |
1134 | (buff[sg_used], data_ptr, sz)) { | |
f7108f91 | 1135 | status = -EFAULT; |
7c832835 BH |
1136 | goto cleanup1; |
1137 | } | |
1138 | } else { | |
1139 | memset(buff[sg_used], 0, sz); | |
1140 | } | |
1141 | left -= sz; | |
1142 | data_ptr += sz; | |
1143 | sg_used++; | |
1144 | } | |
1145 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1146 | status = -ENOMEM; | |
1147 | goto cleanup1; | |
1148 | } | |
1149 | c->cmd_type = CMD_IOCTL_PEND; | |
1150 | c->Header.ReplyQueue = 0; | |
1151 | ||
1152 | if (ioc->buf_size > 0) { | |
1153 | c->Header.SGList = sg_used; | |
1154 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1155 | } else { |
7c832835 BH |
1156 | c->Header.SGList = 0; |
1157 | c->Header.SGTotal = 0; | |
1da177e4 | 1158 | } |
7c832835 BH |
1159 | c->Header.LUN = ioc->LUN_info; |
1160 | c->Header.Tag.lower = c->busaddr; | |
1161 | ||
1162 | c->Request = ioc->Request; | |
1163 | if (ioc->buf_size > 0) { | |
1164 | int i; | |
1165 | for (i = 0; i < sg_used; i++) { | |
1166 | temp64.val = | |
1167 | pci_map_single(host->pdev, buff[i], | |
1168 | buff_size[i], | |
1169 | PCI_DMA_BIDIRECTIONAL); | |
1170 | c->SG[i].Addr.lower = | |
1171 | temp64.val32.lower; | |
1172 | c->SG[i].Addr.upper = | |
1173 | temp64.val32.upper; | |
1174 | c->SG[i].Len = buff_size[i]; | |
1175 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1176 | } | |
1177 | } | |
1178 | c->waiting = &wait; | |
1179 | /* Put the request on the tail of the request queue */ | |
1180 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1181 | addQ(&host->reqQ, c); | |
1182 | host->Qdepth++; | |
1183 | start_io(host); | |
1184 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1185 | wait_for_completion(&wait); | |
1186 | /* unlock the buffers from DMA */ | |
1187 | for (i = 0; i < sg_used; i++) { | |
1188 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1189 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1190 | pci_unmap_single(host->pdev, | |
1191 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1192 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1193 | } |
0a9279cc | 1194 | check_ioctl_unit_attention(host, c); |
7c832835 BH |
1195 | /* Copy the error information out */ |
1196 | ioc->error_info = *(c->err_info); | |
1197 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1198 | cmd_free(host, c, 0); | |
1199 | status = -EFAULT; | |
1200 | goto cleanup1; | |
1201 | } | |
1202 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1203 | /* Copy the data out of the buffer we created */ | |
1204 | BYTE __user *ptr = ioc->buf; | |
1205 | for (i = 0; i < sg_used; i++) { | |
1206 | if (copy_to_user | |
1207 | (ptr, buff[i], buff_size[i])) { | |
1208 | cmd_free(host, c, 0); | |
1209 | status = -EFAULT; | |
1210 | goto cleanup1; | |
1211 | } | |
1212 | ptr += buff_size[i]; | |
1da177e4 | 1213 | } |
1da177e4 | 1214 | } |
7c832835 BH |
1215 | cmd_free(host, c, 0); |
1216 | status = 0; | |
1217 | cleanup1: | |
1218 | if (buff) { | |
1219 | for (i = 0; i < sg_used; i++) | |
1220 | kfree(buff[i]); | |
1221 | kfree(buff); | |
1222 | } | |
1223 | kfree(buff_size); | |
1224 | kfree(ioc); | |
1225 | return status; | |
1da177e4 | 1226 | } |
03bbfee5 MMOD |
1227 | |
1228 | /* scsi_cmd_ioctl handles these, below, though some are not */ | |
1229 | /* very meaningful for cciss. SG_IO is the main one people want. */ | |
1230 | ||
1231 | case SG_GET_VERSION_NUM: | |
1232 | case SG_SET_TIMEOUT: | |
1233 | case SG_GET_TIMEOUT: | |
1234 | case SG_GET_RESERVED_SIZE: | |
1235 | case SG_SET_RESERVED_SIZE: | |
1236 | case SG_EMULATED_HOST: | |
1237 | case SG_IO: | |
1238 | case SCSI_IOCTL_SEND_COMMAND: | |
ef7822c2 | 1239 | return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
03bbfee5 MMOD |
1240 | |
1241 | /* scsi_cmd_ioctl would normally handle these, below, but */ | |
1242 | /* they aren't a good fit for cciss, as CD-ROMs are */ | |
1243 | /* not supported, and we don't have any bus/target/lun */ | |
1244 | /* which we present to the kernel. */ | |
1245 | ||
1246 | case CDROM_SEND_PACKET: | |
1247 | case CDROMCLOSETRAY: | |
1248 | case CDROMEJECT: | |
1249 | case SCSI_IOCTL_GET_IDLUN: | |
1250 | case SCSI_IOCTL_GET_BUS_NUMBER: | |
1da177e4 LT |
1251 | default: |
1252 | return -ENOTTY; | |
1253 | } | |
1da177e4 LT |
1254 | } |
1255 | ||
7b30f092 JA |
1256 | static void cciss_check_queues(ctlr_info_t *h) |
1257 | { | |
1258 | int start_queue = h->next_to_run; | |
1259 | int i; | |
1260 | ||
1261 | /* check to see if we have maxed out the number of commands that can | |
1262 | * be placed on the queue. If so then exit. We do this check here | |
1263 | * in case the interrupt we serviced was from an ioctl and did not | |
1264 | * free any new commands. | |
1265 | */ | |
f880632f | 1266 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1267 | return; |
1268 | ||
1269 | /* We have room on the queue for more commands. Now we need to queue | |
1270 | * them up. We will also keep track of the next queue to run so | |
1271 | * that every queue gets a chance to be started first. | |
1272 | */ | |
1273 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1274 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1275 | /* make sure the disk has been added and the drive is real | |
1276 | * because this can be called from the middle of init_one. | |
1277 | */ | |
1278 | if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads)) | |
1279 | continue; | |
1280 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1281 | ||
1282 | /* check to see if we have maxed out the number of commands | |
1283 | * that can be placed on the queue. | |
1284 | */ | |
f880632f | 1285 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1286 | if (curr_queue == start_queue) { |
1287 | h->next_to_run = | |
1288 | (start_queue + 1) % (h->highest_lun + 1); | |
1289 | break; | |
1290 | } else { | |
1291 | h->next_to_run = curr_queue; | |
1292 | break; | |
1293 | } | |
7b30f092 JA |
1294 | } |
1295 | } | |
1296 | } | |
1297 | ||
ca1e0484 MM |
1298 | static void cciss_softirq_done(struct request *rq) |
1299 | { | |
1300 | CommandList_struct *cmd = rq->completion_data; | |
1301 | ctlr_info_t *h = hba[cmd->ctlr]; | |
1302 | unsigned long flags; | |
1303 | u64bit temp64; | |
1304 | int i, ddir; | |
1305 | ||
1306 | if (cmd->Request.Type.Direction == XFER_READ) | |
1307 | ddir = PCI_DMA_FROMDEVICE; | |
1308 | else | |
1309 | ddir = PCI_DMA_TODEVICE; | |
1310 | ||
1311 | /* command did not need to be retried */ | |
1312 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1313 | for (i = 0; i < cmd->Header.SGList; i++) { |
ca1e0484 MM |
1314 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
1315 | temp64.val32.upper = cmd->SG[i].Addr.upper; | |
1316 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); | |
1317 | } | |
1318 | ||
ca1e0484 MM |
1319 | #ifdef CCISS_DEBUG |
1320 | printk("Done with %p\n", rq); | |
7c832835 | 1321 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1322 | |
c3a4d78c | 1323 | /* set the residual count for pc requests */ |
ac44e5b2 | 1324 | if (blk_pc_request(rq)) |
c3a4d78c | 1325 | rq->resid_len = cmd->err_info->ResidualCnt; |
ac44e5b2 | 1326 | |
c3a4d78c | 1327 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
3daeea29 | 1328 | |
ca1e0484 | 1329 | spin_lock_irqsave(&h->lock, flags); |
7c832835 | 1330 | cmd_free(h, cmd, 1); |
7b30f092 | 1331 | cciss_check_queues(h); |
ca1e0484 MM |
1332 | spin_unlock_irqrestore(&h->lock, flags); |
1333 | } | |
1334 | ||
a72da29b MM |
1335 | /* This function gets the serial number of a logical drive via |
1336 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial | |
1337 | * number cannot be had, for whatever reason, 16 bytes of 0xff | |
1338 | * are returned instead. | |
1339 | */ | |
1340 | static void cciss_get_serial_no(int ctlr, int logvol, int withirq, | |
1341 | unsigned char *serial_no, int buflen) | |
1342 | { | |
1343 | #define PAGE_83_INQ_BYTES 64 | |
1344 | int rc; | |
1345 | unsigned char *buf; | |
1346 | ||
1347 | if (buflen > 16) | |
1348 | buflen = 16; | |
1349 | memset(serial_no, 0xff, buflen); | |
1350 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); | |
1351 | if (!buf) | |
1352 | return; | |
1353 | memset(serial_no, 0, buflen); | |
1354 | if (withirq) | |
1355 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf, | |
1356 | PAGE_83_INQ_BYTES, 1, logvol, 0x83, TYPE_CMD); | |
1357 | else | |
1358 | rc = sendcmd(CISS_INQUIRY, ctlr, buf, | |
1359 | PAGE_83_INQ_BYTES, 1, logvol, 0x83, NULL, TYPE_CMD); | |
1360 | if (rc == IO_OK) | |
1361 | memcpy(serial_no, &buf[8], buflen); | |
1362 | kfree(buf); | |
1363 | return; | |
1364 | } | |
1365 | ||
6ae5ce8e MM |
1366 | static void cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, |
1367 | int drv_index) | |
1368 | { | |
1369 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); | |
1370 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); | |
1371 | disk->major = h->major; | |
1372 | disk->first_minor = drv_index << NWD_SHIFT; | |
1373 | disk->fops = &cciss_fops; | |
1374 | disk->private_data = &h->drv[drv_index]; | |
40444308 | 1375 | disk->driverfs_dev = &h->pdev->dev; |
6ae5ce8e MM |
1376 | |
1377 | /* Set up queue information */ | |
1378 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); | |
1379 | ||
1380 | /* This is a hardware imposed limit. */ | |
1381 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); | |
1382 | ||
1383 | /* This is a limit in the driver and could be eliminated. */ | |
1384 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); | |
1385 | ||
1386 | blk_queue_max_sectors(disk->queue, h->cciss_max_sectors); | |
1387 | ||
1388 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); | |
1389 | ||
1390 | disk->queue->queuedata = h; | |
1391 | ||
1392 | blk_queue_hardsect_size(disk->queue, | |
1393 | h->drv[drv_index].block_size); | |
1394 | ||
1395 | /* Make sure all queue data is written out before */ | |
1396 | /* setting h->drv[drv_index].queue, as setting this */ | |
1397 | /* allows the interrupt handler to start the queue */ | |
1398 | wmb(); | |
1399 | h->drv[drv_index].queue = disk->queue; | |
1400 | add_disk(disk); | |
1401 | } | |
1402 | ||
ddd47442 | 1403 | /* This function will check the usage_count of the drive to be updated/added. |
a72da29b MM |
1404 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
1405 | * the drive's capacity, geometry, or serial number has changed, | |
1406 | * then the drive information will be updated and the disk will be | |
1407 | * re-registered with the kernel. If these conditions don't hold, | |
1408 | * then it will be left alone for the next reboot. The exception to this | |
1409 | * is disk 0 which will always be left registered with the kernel since it | |
1410 | * is also the controller node. Any changes to disk 0 will show up on | |
1411 | * the next reboot. | |
7c832835 | 1412 | */ |
6ae5ce8e | 1413 | static void cciss_update_drive_info(int ctlr, int drv_index, int first_time) |
7c832835 | 1414 | { |
ddd47442 MM |
1415 | ctlr_info_t *h = hba[ctlr]; |
1416 | struct gendisk *disk; | |
ddd47442 MM |
1417 | InquiryData_struct *inq_buff = NULL; |
1418 | unsigned int block_size; | |
00988a35 | 1419 | sector_t total_size; |
ddd47442 MM |
1420 | unsigned long flags = 0; |
1421 | int ret = 0; | |
a72da29b | 1422 | drive_info_struct *drvinfo; |
6ae5ce8e | 1423 | int was_only_controller_node; |
a72da29b MM |
1424 | |
1425 | /* Get information about the disk and modify the driver structure */ | |
1426 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
1427 | drvinfo = kmalloc(sizeof(*drvinfo), GFP_KERNEL); | |
1428 | if (inq_buff == NULL || drvinfo == NULL) | |
1429 | goto mem_msg; | |
1430 | ||
6ae5ce8e MM |
1431 | /* See if we're trying to update the "controller node" |
1432 | * this will happen the when the first logical drive gets | |
1433 | * created by ACU. | |
1434 | */ | |
1435 | was_only_controller_node = (drv_index == 0 && | |
1436 | h->drv[0].raid_level == -1); | |
1437 | ||
a72da29b MM |
1438 | /* testing to see if 16-byte CDBs are already being used */ |
1439 | if (h->cciss_read == CCISS_READ_16) { | |
1440 | cciss_read_capacity_16(h->ctlr, drv_index, 1, | |
1441 | &total_size, &block_size); | |
1442 | ||
1443 | } else { | |
1444 | cciss_read_capacity(ctlr, drv_index, 1, | |
1445 | &total_size, &block_size); | |
1446 | ||
1447 | /* if read_capacity returns all F's this volume is >2TB */ | |
1448 | /* in size so we switch to 16-byte CDB's for all */ | |
1449 | /* read/write ops */ | |
1450 | if (total_size == 0xFFFFFFFFULL) { | |
1451 | cciss_read_capacity_16(ctlr, drv_index, 1, | |
1452 | &total_size, &block_size); | |
1453 | h->cciss_read = CCISS_READ_16; | |
1454 | h->cciss_write = CCISS_WRITE_16; | |
1455 | } else { | |
1456 | h->cciss_read = CCISS_READ_10; | |
1457 | h->cciss_write = CCISS_WRITE_10; | |
1458 | } | |
1459 | } | |
1460 | ||
1461 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, | |
1462 | inq_buff, drvinfo); | |
1463 | drvinfo->block_size = block_size; | |
1464 | drvinfo->nr_blocks = total_size + 1; | |
1465 | ||
1466 | cciss_get_serial_no(ctlr, drv_index, 1, drvinfo->serial_no, | |
1467 | sizeof(drvinfo->serial_no)); | |
1468 | ||
1469 | /* Is it the same disk we already know, and nothing's changed? */ | |
1470 | if (h->drv[drv_index].raid_level != -1 && | |
1471 | ((memcmp(drvinfo->serial_no, | |
1472 | h->drv[drv_index].serial_no, 16) == 0) && | |
1473 | drvinfo->block_size == h->drv[drv_index].block_size && | |
1474 | drvinfo->nr_blocks == h->drv[drv_index].nr_blocks && | |
1475 | drvinfo->heads == h->drv[drv_index].heads && | |
1476 | drvinfo->sectors == h->drv[drv_index].sectors && | |
6ae5ce8e | 1477 | drvinfo->cylinders == h->drv[drv_index].cylinders)) |
a72da29b MM |
1478 | /* The disk is unchanged, nothing to update */ |
1479 | goto freeret; | |
a72da29b | 1480 | |
6ae5ce8e MM |
1481 | /* If we get here it's not the same disk, or something's changed, |
1482 | * so we need to * deregister it, and re-register it, if it's not | |
1483 | * in use. | |
1484 | * If the disk already exists then deregister it before proceeding | |
1485 | * (unless it's the first disk (for the controller node). | |
1486 | */ | |
a72da29b MM |
1487 | if (h->drv[drv_index].raid_level != -1 && drv_index != 0) { |
1488 | printk(KERN_WARNING "disk %d has changed.\n", drv_index); | |
ddd47442 MM |
1489 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
1490 | h->drv[drv_index].busy_configuring = 1; | |
1491 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
e14ac670 | 1492 | |
6ae5ce8e MM |
1493 | /* deregister_disk sets h->drv[drv_index].queue = NULL |
1494 | * which keeps the interrupt handler from starting | |
1495 | * the queue. | |
1496 | */ | |
a0ea8622 | 1497 | ret = deregister_disk(h, drv_index, 0); |
ddd47442 MM |
1498 | h->drv[drv_index].busy_configuring = 0; |
1499 | } | |
1500 | ||
1501 | /* If the disk is in use return */ | |
1502 | if (ret) | |
a72da29b MM |
1503 | goto freeret; |
1504 | ||
6ae5ce8e MM |
1505 | /* Save the new information from cciss_geometry_inquiry |
1506 | * and serial number inquiry. | |
1507 | */ | |
a72da29b MM |
1508 | h->drv[drv_index].block_size = drvinfo->block_size; |
1509 | h->drv[drv_index].nr_blocks = drvinfo->nr_blocks; | |
1510 | h->drv[drv_index].heads = drvinfo->heads; | |
1511 | h->drv[drv_index].sectors = drvinfo->sectors; | |
1512 | h->drv[drv_index].cylinders = drvinfo->cylinders; | |
1513 | h->drv[drv_index].raid_level = drvinfo->raid_level; | |
1514 | memcpy(h->drv[drv_index].serial_no, drvinfo->serial_no, 16); | |
ddd47442 MM |
1515 | |
1516 | ++h->num_luns; | |
1517 | disk = h->gendisk[drv_index]; | |
1518 | set_capacity(disk, h->drv[drv_index].nr_blocks); | |
1519 | ||
6ae5ce8e MM |
1520 | /* If it's not disk 0 (drv_index != 0) |
1521 | * or if it was disk 0, but there was previously | |
1522 | * no actual corresponding configured logical drive | |
1523 | * (raid_leve == -1) then we want to update the | |
1524 | * logical drive's information. | |
1525 | */ | |
1526 | if (drv_index || first_time) | |
1527 | cciss_add_disk(h, disk, drv_index); | |
ddd47442 | 1528 | |
6ae5ce8e | 1529 | freeret: |
ddd47442 | 1530 | kfree(inq_buff); |
a72da29b | 1531 | kfree(drvinfo); |
ddd47442 | 1532 | return; |
6ae5ce8e | 1533 | mem_msg: |
ddd47442 MM |
1534 | printk(KERN_ERR "cciss: out of memory\n"); |
1535 | goto freeret; | |
1536 | } | |
1537 | ||
1538 | /* This function will find the first index of the controllers drive array | |
1539 | * that has a -1 for the raid_level and will return that index. This is | |
1540 | * where new drives will be added. If the index to be returned is greater | |
1541 | * than the highest_lun index for the controller then highest_lun is set | |
1542 | * to this new index. If there are no available indexes then -1 is returned. | |
eece695f MM |
1543 | * "controller_node" is used to know if this is a real logical drive, or just |
1544 | * the controller node, which determines if this counts towards highest_lun. | |
7c832835 | 1545 | */ |
eece695f | 1546 | static int cciss_find_free_drive_index(int ctlr, int controller_node) |
ddd47442 MM |
1547 | { |
1548 | int i; | |
1549 | ||
7c832835 BH |
1550 | for (i = 0; i < CISS_MAX_LUN; i++) { |
1551 | if (hba[ctlr]->drv[i].raid_level == -1) { | |
ddd47442 | 1552 | if (i > hba[ctlr]->highest_lun) |
eece695f MM |
1553 | if (!controller_node) |
1554 | hba[ctlr]->highest_lun = i; | |
ddd47442 MM |
1555 | return i; |
1556 | } | |
1557 | } | |
1558 | return -1; | |
1559 | } | |
1560 | ||
6ae5ce8e MM |
1561 | /* cciss_add_gendisk finds a free hba[]->drv structure |
1562 | * and allocates a gendisk if needed, and sets the lunid | |
1563 | * in the drvinfo structure. It returns the index into | |
1564 | * the ->drv[] array, or -1 if none are free. | |
1565 | * is_controller_node indicates whether highest_lun should | |
1566 | * count this disk, or if it's only being added to provide | |
1567 | * a means to talk to the controller in case no logical | |
1568 | * drives have yet been configured. | |
1569 | */ | |
eece695f | 1570 | static int cciss_add_gendisk(ctlr_info_t *h, __u32 lunid, int controller_node) |
6ae5ce8e MM |
1571 | { |
1572 | int drv_index; | |
1573 | ||
eece695f | 1574 | drv_index = cciss_find_free_drive_index(h->ctlr, controller_node); |
6ae5ce8e MM |
1575 | if (drv_index == -1) |
1576 | return -1; | |
1577 | /*Check if the gendisk needs to be allocated */ | |
1578 | if (!h->gendisk[drv_index]) { | |
1579 | h->gendisk[drv_index] = | |
1580 | alloc_disk(1 << NWD_SHIFT); | |
1581 | if (!h->gendisk[drv_index]) { | |
1582 | printk(KERN_ERR "cciss%d: could not " | |
1583 | "allocate a new disk %d\n", | |
1584 | h->ctlr, drv_index); | |
1585 | return -1; | |
1586 | } | |
1587 | } | |
1588 | h->drv[drv_index].LunID = lunid; | |
1589 | ||
1590 | /* Don't need to mark this busy because nobody */ | |
1591 | /* else knows about this disk yet to contend */ | |
1592 | /* for access to it. */ | |
1593 | h->drv[drv_index].busy_configuring = 0; | |
1594 | wmb(); | |
1595 | return drv_index; | |
1596 | } | |
1597 | ||
1598 | /* This is for the special case of a controller which | |
1599 | * has no logical drives. In this case, we still need | |
1600 | * to register a disk so the controller can be accessed | |
1601 | * by the Array Config Utility. | |
1602 | */ | |
1603 | static void cciss_add_controller_node(ctlr_info_t *h) | |
1604 | { | |
1605 | struct gendisk *disk; | |
1606 | int drv_index; | |
1607 | ||
1608 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ | |
1609 | return; | |
1610 | ||
eece695f | 1611 | drv_index = cciss_add_gendisk(h, 0, 1); |
6ae5ce8e MM |
1612 | if (drv_index == -1) { |
1613 | printk(KERN_WARNING "cciss%d: could not " | |
1614 | "add disk 0.\n", h->ctlr); | |
1615 | return; | |
1616 | } | |
1617 | h->drv[drv_index].block_size = 512; | |
1618 | h->drv[drv_index].nr_blocks = 0; | |
1619 | h->drv[drv_index].heads = 0; | |
1620 | h->drv[drv_index].sectors = 0; | |
1621 | h->drv[drv_index].cylinders = 0; | |
1622 | h->drv[drv_index].raid_level = -1; | |
1623 | memset(h->drv[drv_index].serial_no, 0, 16); | |
1624 | disk = h->gendisk[drv_index]; | |
1625 | cciss_add_disk(h, disk, drv_index); | |
1626 | } | |
1627 | ||
ddd47442 | 1628 | /* This function will add and remove logical drives from the Logical |
d14c4ab5 | 1629 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
1630 | * so that mount points are preserved until the next reboot. This allows |
1631 | * for the removal of logical drives in the middle of the drive array | |
1632 | * without a re-ordering of those drives. | |
1633 | * INPUT | |
1634 | * h = The controller to perform the operations on | |
7c832835 | 1635 | */ |
6ae5ce8e | 1636 | static int rebuild_lun_table(ctlr_info_t *h, int first_time) |
1da177e4 | 1637 | { |
ddd47442 MM |
1638 | int ctlr = h->ctlr; |
1639 | int num_luns; | |
1640 | ReportLunData_struct *ld_buff = NULL; | |
ddd47442 MM |
1641 | int return_code; |
1642 | int listlength = 0; | |
1643 | int i; | |
1644 | int drv_found; | |
1645 | int drv_index = 0; | |
1646 | __u32 lunid = 0; | |
1da177e4 | 1647 | unsigned long flags; |
ddd47442 | 1648 | |
6ae5ce8e MM |
1649 | if (!capable(CAP_SYS_RAWIO)) |
1650 | return -EPERM; | |
1651 | ||
ddd47442 MM |
1652 | /* Set busy_configuring flag for this operation */ |
1653 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 1654 | if (h->busy_configuring) { |
ddd47442 MM |
1655 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
1656 | return -EBUSY; | |
1657 | } | |
1658 | h->busy_configuring = 1; | |
a72da29b | 1659 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
ddd47442 | 1660 | |
a72da29b MM |
1661 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
1662 | if (ld_buff == NULL) | |
1663 | goto mem_msg; | |
1664 | ||
1665 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
1666 | sizeof(ReportLunData_struct), 0, | |
1667 | 0, 0, TYPE_CMD); | |
ddd47442 | 1668 | |
a72da29b MM |
1669 | if (return_code == IO_OK) |
1670 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); | |
1671 | else { /* reading number of logical volumes failed */ | |
1672 | printk(KERN_WARNING "cciss: report logical volume" | |
1673 | " command failed\n"); | |
1674 | listlength = 0; | |
1675 | goto freeret; | |
1676 | } | |
1677 | ||
1678 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
1679 | if (num_luns > CISS_MAX_LUN) { | |
1680 | num_luns = CISS_MAX_LUN; | |
1681 | printk(KERN_WARNING "cciss: more luns configured" | |
1682 | " on controller than can be handled by" | |
1683 | " this driver.\n"); | |
1684 | } | |
1685 | ||
6ae5ce8e MM |
1686 | if (num_luns == 0) |
1687 | cciss_add_controller_node(h); | |
1688 | ||
1689 | /* Compare controller drive array to driver's drive array | |
1690 | * to see if any drives are missing on the controller due | |
1691 | * to action of Array Config Utility (user deletes drive) | |
1692 | * and deregister logical drives which have disappeared. | |
1693 | */ | |
a72da29b MM |
1694 | for (i = 0; i <= h->highest_lun; i++) { |
1695 | int j; | |
1696 | drv_found = 0; | |
d8a0be6a SC |
1697 | |
1698 | /* skip holes in the array from already deleted drives */ | |
1699 | if (h->drv[i].raid_level == -1) | |
1700 | continue; | |
1701 | ||
a72da29b MM |
1702 | for (j = 0; j < num_luns; j++) { |
1703 | memcpy(&lunid, &ld_buff->LUN[j][0], 4); | |
1704 | lunid = le32_to_cpu(lunid); | |
1705 | if (h->drv[i].LunID == lunid) { | |
1706 | drv_found = 1; | |
1707 | break; | |
1708 | } | |
1709 | } | |
1710 | if (!drv_found) { | |
1711 | /* Deregister it from the OS, it's gone. */ | |
1712 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
1713 | h->drv[i].busy_configuring = 1; | |
1714 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
a0ea8622 | 1715 | return_code = deregister_disk(h, i, 1); |
a72da29b | 1716 | h->drv[i].busy_configuring = 0; |
ddd47442 | 1717 | } |
a72da29b | 1718 | } |
ddd47442 | 1719 | |
a72da29b MM |
1720 | /* Compare controller drive array to driver's drive array. |
1721 | * Check for updates in the drive information and any new drives | |
1722 | * on the controller due to ACU adding logical drives, or changing | |
1723 | * a logical drive's size, etc. Reregister any new/changed drives | |
1724 | */ | |
1725 | for (i = 0; i < num_luns; i++) { | |
1726 | int j; | |
ddd47442 | 1727 | |
a72da29b | 1728 | drv_found = 0; |
ddd47442 | 1729 | |
a72da29b MM |
1730 | memcpy(&lunid, &ld_buff->LUN[i][0], 4); |
1731 | lunid = le32_to_cpu(lunid); | |
ddd47442 | 1732 | |
a72da29b MM |
1733 | /* Find if the LUN is already in the drive array |
1734 | * of the driver. If so then update its info | |
1735 | * if not in use. If it does not exist then find | |
1736 | * the first free index and add it. | |
1737 | */ | |
1738 | for (j = 0; j <= h->highest_lun; j++) { | |
1739 | if (h->drv[j].raid_level != -1 && | |
1740 | h->drv[j].LunID == lunid) { | |
1741 | drv_index = j; | |
1742 | drv_found = 1; | |
1743 | break; | |
ddd47442 | 1744 | } |
a72da29b | 1745 | } |
ddd47442 | 1746 | |
a72da29b MM |
1747 | /* check if the drive was found already in the array */ |
1748 | if (!drv_found) { | |
eece695f | 1749 | drv_index = cciss_add_gendisk(h, lunid, 0); |
a72da29b MM |
1750 | if (drv_index == -1) |
1751 | goto freeret; | |
a72da29b | 1752 | } |
6ae5ce8e | 1753 | cciss_update_drive_info(ctlr, drv_index, first_time); |
a72da29b | 1754 | } /* end for */ |
ddd47442 | 1755 | |
6ae5ce8e | 1756 | freeret: |
ddd47442 MM |
1757 | kfree(ld_buff); |
1758 | h->busy_configuring = 0; | |
1759 | /* We return -1 here to tell the ACU that we have registered/updated | |
1760 | * all of the drives that we can and to keep it from calling us | |
1761 | * additional times. | |
7c832835 | 1762 | */ |
ddd47442 | 1763 | return -1; |
6ae5ce8e | 1764 | mem_msg: |
ddd47442 | 1765 | printk(KERN_ERR "cciss: out of memory\n"); |
a72da29b | 1766 | h->busy_configuring = 0; |
ddd47442 MM |
1767 | goto freeret; |
1768 | } | |
1769 | ||
1770 | /* This function will deregister the disk and it's queue from the | |
1771 | * kernel. It must be called with the controller lock held and the | |
1772 | * drv structures busy_configuring flag set. It's parameters are: | |
1773 | * | |
1774 | * disk = This is the disk to be deregistered | |
1775 | * drv = This is the drive_info_struct associated with the disk to be | |
1776 | * deregistered. It contains information about the disk used | |
1777 | * by the driver. | |
1778 | * clear_all = This flag determines whether or not the disk information | |
1779 | * is going to be completely cleared out and the highest_lun | |
1780 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 1781 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
1782 | * the highest_lun should be left unchanged and the LunID |
1783 | * should not be cleared. | |
1784 | */ | |
a0ea8622 | 1785 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
ddd47442 MM |
1786 | int clear_all) |
1787 | { | |
799202cb | 1788 | int i; |
a0ea8622 SC |
1789 | struct gendisk *disk; |
1790 | drive_info_struct *drv; | |
1da177e4 LT |
1791 | |
1792 | if (!capable(CAP_SYS_RAWIO)) | |
1793 | return -EPERM; | |
1794 | ||
a0ea8622 SC |
1795 | drv = &h->drv[drv_index]; |
1796 | disk = h->gendisk[drv_index]; | |
1797 | ||
1da177e4 | 1798 | /* make sure logical volume is NOT is use */ |
7c832835 BH |
1799 | if (clear_all || (h->gendisk[0] == disk)) { |
1800 | if (drv->usage_count > 1) | |
1801 | return -EBUSY; | |
1802 | } else if (drv->usage_count > 0) | |
1803 | return -EBUSY; | |
1da177e4 | 1804 | |
ddd47442 MM |
1805 | /* invalidate the devices and deregister the disk. If it is disk |
1806 | * zero do not deregister it but just zero out it's values. This | |
1807 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
1808 | */ |
1809 | if (h->gendisk[0] != disk) { | |
5a9df732 AB |
1810 | struct request_queue *q = disk->queue; |
1811 | if (disk->flags & GENHD_FL_UP) | |
1812 | del_gendisk(disk); | |
1813 | if (q) { | |
1814 | blk_cleanup_queue(q); | |
1815 | /* Set drv->queue to NULL so that we do not try | |
1816 | * to call blk_start_queue on this queue in the | |
1817 | * interrupt handler | |
1818 | */ | |
1819 | drv->queue = NULL; | |
1820 | } | |
1821 | /* If clear_all is set then we are deleting the logical | |
1822 | * drive, not just refreshing its info. For drives | |
1823 | * other than disk 0 we will call put_disk. We do not | |
1824 | * do this for disk 0 as we need it to be able to | |
1825 | * configure the controller. | |
a72da29b | 1826 | */ |
5a9df732 AB |
1827 | if (clear_all){ |
1828 | /* This isn't pretty, but we need to find the | |
1829 | * disk in our array and NULL our the pointer. | |
1830 | * This is so that we will call alloc_disk if | |
1831 | * this index is used again later. | |
a72da29b | 1832 | */ |
5a9df732 | 1833 | for (i=0; i < CISS_MAX_LUN; i++){ |
a72da29b | 1834 | if (h->gendisk[i] == disk) { |
5a9df732 AB |
1835 | h->gendisk[i] = NULL; |
1836 | break; | |
799202cb | 1837 | } |
799202cb | 1838 | } |
5a9df732 | 1839 | put_disk(disk); |
ddd47442 | 1840 | } |
799202cb MM |
1841 | } else { |
1842 | set_capacity(disk, 0); | |
ddd47442 MM |
1843 | } |
1844 | ||
1845 | --h->num_luns; | |
1846 | /* zero out the disk size info */ | |
1847 | drv->nr_blocks = 0; | |
1848 | drv->block_size = 0; | |
1849 | drv->heads = 0; | |
1850 | drv->sectors = 0; | |
1851 | drv->cylinders = 0; | |
1852 | drv->raid_level = -1; /* This can be used as a flag variable to | |
1853 | * indicate that this element of the drive | |
1854 | * array is free. | |
7c832835 BH |
1855 | */ |
1856 | ||
1857 | if (clear_all) { | |
1858 | /* check to see if it was the last disk */ | |
1859 | if (drv == h->drv + h->highest_lun) { | |
1860 | /* if so, find the new hightest lun */ | |
1861 | int i, newhighest = -1; | |
a72da29b | 1862 | for (i = 0; i <= h->highest_lun; i++) { |
7c832835 | 1863 | /* if the disk has size > 0, it is available */ |
ddd47442 | 1864 | if (h->drv[i].heads) |
7c832835 BH |
1865 | newhighest = i; |
1866 | } | |
1867 | h->highest_lun = newhighest; | |
1da177e4 | 1868 | } |
ddd47442 | 1869 | |
7c832835 | 1870 | drv->LunID = 0; |
ddd47442 | 1871 | } |
e2019b58 | 1872 | return 0; |
1da177e4 | 1873 | } |
ddd47442 | 1874 | |
7c832835 BH |
1875 | static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, |
1876 | 1: address logical volume log_unit, | |
1877 | 2: periph device address is scsi3addr */ | |
1878 | unsigned int log_unit, __u8 page_code, | |
1879 | unsigned char *scsi3addr, int cmd_type) | |
1da177e4 | 1880 | { |
7c832835 | 1881 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
1882 | u64bit buff_dma_handle; |
1883 | int status = IO_OK; | |
1884 | ||
1885 | c->cmd_type = CMD_IOCTL_PEND; | |
1886 | c->Header.ReplyQueue = 0; | |
7c832835 | 1887 | if (buff != NULL) { |
1da177e4 | 1888 | c->Header.SGList = 1; |
7c832835 | 1889 | c->Header.SGTotal = 1; |
1da177e4 LT |
1890 | } else { |
1891 | c->Header.SGList = 0; | |
7c832835 | 1892 | c->Header.SGTotal = 0; |
1da177e4 LT |
1893 | } |
1894 | c->Header.Tag.lower = c->busaddr; | |
1895 | ||
1896 | c->Request.Type.Type = cmd_type; | |
1897 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
1898 | switch (cmd) { |
1899 | case CISS_INQUIRY: | |
1da177e4 | 1900 | /* If the logical unit number is 0 then, this is going |
7c832835 BH |
1901 | to controller so It's a physical command |
1902 | mode = 0 target = 0. So we have nothing to write. | |
1903 | otherwise, if use_unit_num == 1, | |
1904 | mode = 1(volume set addressing) target = LUNID | |
1905 | otherwise, if use_unit_num == 2, | |
1906 | mode = 0(periph dev addr) target = scsi3addr */ | |
1da177e4 | 1907 | if (use_unit_num == 1) { |
7c832835 BH |
1908 | c->Header.LUN.LogDev.VolId = |
1909 | h->drv[log_unit].LunID; | |
1910 | c->Header.LUN.LogDev.Mode = 1; | |
1da177e4 | 1911 | } else if (use_unit_num == 2) { |
7c832835 BH |
1912 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, |
1913 | 8); | |
1da177e4 LT |
1914 | c->Header.LUN.LogDev.Mode = 0; |
1915 | } | |
1916 | /* are we trying to read a vital product page */ | |
7c832835 | 1917 | if (page_code != 0) { |
1da177e4 LT |
1918 | c->Request.CDB[1] = 0x01; |
1919 | c->Request.CDB[2] = page_code; | |
1920 | } | |
1921 | c->Request.CDBLen = 6; | |
7c832835 | 1922 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
1923 | c->Request.Type.Direction = XFER_READ; |
1924 | c->Request.Timeout = 0; | |
7c832835 BH |
1925 | c->Request.CDB[0] = CISS_INQUIRY; |
1926 | c->Request.CDB[4] = size & 0xFF; | |
1927 | break; | |
1da177e4 LT |
1928 | case CISS_REPORT_LOG: |
1929 | case CISS_REPORT_PHYS: | |
7c832835 | 1930 | /* Talking to controller so It's a physical command |
1da177e4 | 1931 | mode = 00 target = 0. Nothing to write. |
7c832835 | 1932 | */ |
1da177e4 LT |
1933 | c->Request.CDBLen = 12; |
1934 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1935 | c->Request.Type.Direction = XFER_READ; | |
1936 | c->Request.Timeout = 0; | |
1937 | c->Request.CDB[0] = cmd; | |
7c832835 | 1938 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
1da177e4 LT |
1939 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
1940 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
1941 | c->Request.CDB[9] = size & 0xFF; | |
1942 | break; | |
1943 | ||
1944 | case CCISS_READ_CAPACITY: | |
1945 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1946 | c->Header.LUN.LogDev.Mode = 1; | |
1947 | c->Request.CDBLen = 10; | |
1948 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1949 | c->Request.Type.Direction = XFER_READ; | |
1950 | c->Request.Timeout = 0; | |
1951 | c->Request.CDB[0] = cmd; | |
7c832835 | 1952 | break; |
00988a35 MMOD |
1953 | case CCISS_READ_CAPACITY_16: |
1954 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1955 | c->Header.LUN.LogDev.Mode = 1; | |
1956 | c->Request.CDBLen = 16; | |
1957 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1958 | c->Request.Type.Direction = XFER_READ; | |
1959 | c->Request.Timeout = 0; | |
1960 | c->Request.CDB[0] = cmd; | |
1961 | c->Request.CDB[1] = 0x10; | |
1962 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
1963 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
1964 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
1965 | c->Request.CDB[13] = size & 0xFF; | |
1966 | c->Request.Timeout = 0; | |
1967 | c->Request.CDB[0] = cmd; | |
1968 | break; | |
1da177e4 LT |
1969 | case CCISS_CACHE_FLUSH: |
1970 | c->Request.CDBLen = 12; | |
1971 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1972 | c->Request.Type.Direction = XFER_WRITE; | |
1973 | c->Request.Timeout = 0; | |
1974 | c->Request.CDB[0] = BMIC_WRITE; | |
1975 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 1976 | break; |
1da177e4 LT |
1977 | default: |
1978 | printk(KERN_WARNING | |
7c832835 | 1979 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 1980 | return IO_ERROR; |
1da177e4 LT |
1981 | } |
1982 | } else if (cmd_type == TYPE_MSG) { | |
1983 | switch (cmd) { | |
7c832835 | 1984 | case 0: /* ABORT message */ |
3da8b713 | 1985 | c->Request.CDBLen = 12; |
1986 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1987 | c->Request.Type.Direction = XFER_WRITE; | |
1988 | c->Request.Timeout = 0; | |
7c832835 BH |
1989 | c->Request.CDB[0] = cmd; /* abort */ |
1990 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 1991 | /* buff contains the tag of the command to abort */ |
1992 | memcpy(&c->Request.CDB[4], buff, 8); | |
1993 | break; | |
7c832835 | 1994 | case 1: /* RESET message */ |
3da8b713 | 1995 | c->Request.CDBLen = 12; |
1996 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1997 | c->Request.Type.Direction = XFER_WRITE; | |
1998 | c->Request.Timeout = 0; | |
1999 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 BH |
2000 | c->Request.CDB[0] = cmd; /* reset */ |
2001 | c->Request.CDB[1] = 0x04; /* reset a LUN */ | |
00988a35 | 2002 | break; |
1da177e4 LT |
2003 | case 3: /* No-Op message */ |
2004 | c->Request.CDBLen = 1; | |
2005 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2006 | c->Request.Type.Direction = XFER_WRITE; | |
2007 | c->Request.Timeout = 0; | |
2008 | c->Request.CDB[0] = cmd; | |
2009 | break; | |
2010 | default: | |
2011 | printk(KERN_WARNING | |
7c832835 | 2012 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
2013 | return IO_ERROR; |
2014 | } | |
2015 | } else { | |
2016 | printk(KERN_WARNING | |
7c832835 | 2017 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
2018 | return IO_ERROR; |
2019 | } | |
2020 | /* Fill in the scatter gather information */ | |
2021 | if (size > 0) { | |
2022 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
2023 | buff, size, |
2024 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
2025 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
2026 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
2027 | c->SG[0].Len = size; | |
7c832835 | 2028 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
2029 | } |
2030 | return status; | |
2031 | } | |
7c832835 BH |
2032 | |
2033 | static int sendcmd_withirq(__u8 cmd, | |
2034 | int ctlr, | |
2035 | void *buff, | |
2036 | size_t size, | |
2037 | unsigned int use_unit_num, | |
2038 | unsigned int log_unit, __u8 page_code, int cmd_type) | |
1da177e4 LT |
2039 | { |
2040 | ctlr_info_t *h = hba[ctlr]; | |
2041 | CommandList_struct *c; | |
7c832835 | 2042 | u64bit buff_dma_handle; |
1da177e4 LT |
2043 | unsigned long flags; |
2044 | int return_status; | |
6e9a4738 | 2045 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
2046 | |
2047 | if ((c = cmd_alloc(h, 0)) == NULL) | |
1da177e4 LT |
2048 | return -ENOMEM; |
2049 | return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 2050 | log_unit, page_code, NULL, cmd_type); |
1da177e4 LT |
2051 | if (return_status != IO_OK) { |
2052 | cmd_free(h, c, 0); | |
2053 | return return_status; | |
2054 | } | |
7c832835 | 2055 | resend_cmd2: |
1da177e4 | 2056 | c->waiting = &wait; |
7c832835 | 2057 | |
1da177e4 LT |
2058 | /* Put the request on the tail of the queue and send it */ |
2059 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
2060 | addQ(&h->reqQ, c); | |
2061 | h->Qdepth++; | |
2062 | start_io(h); | |
2063 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 2064 | |
1da177e4 LT |
2065 | wait_for_completion(&wait); |
2066 | ||
7c832835 BH |
2067 | if (c->err_info->CommandStatus != 0) { /* an error has occurred */ |
2068 | switch (c->err_info->CommandStatus) { | |
2069 | case CMD_TARGET_STATUS: | |
2070 | printk(KERN_WARNING "cciss: cmd %p has " | |
2071 | " completed with errors\n", c); | |
2072 | if (c->err_info->ScsiStatus) { | |
2073 | printk(KERN_WARNING "cciss: cmd %p " | |
2074 | "has SCSI Status = %x\n", | |
2075 | c, c->err_info->ScsiStatus); | |
2076 | } | |
1da177e4 LT |
2077 | |
2078 | break; | |
7c832835 BH |
2079 | case CMD_DATA_UNDERRUN: |
2080 | case CMD_DATA_OVERRUN: | |
1da177e4 LT |
2081 | /* expected for inquire and report lun commands */ |
2082 | break; | |
7c832835 BH |
2083 | case CMD_INVALID: |
2084 | printk(KERN_WARNING "cciss: Cmd %p is " | |
2085 | "reported invalid\n", c); | |
2086 | return_status = IO_ERROR; | |
1da177e4 | 2087 | break; |
7c832835 BH |
2088 | case CMD_PROTOCOL_ERR: |
2089 | printk(KERN_WARNING "cciss: cmd %p has " | |
2090 | "protocol error \n", c); | |
2091 | return_status = IO_ERROR; | |
1da177e4 | 2092 | break; |
7c832835 BH |
2093 | case CMD_HARDWARE_ERR: |
2094 | printk(KERN_WARNING "cciss: cmd %p had " | |
2095 | " hardware error\n", c); | |
2096 | return_status = IO_ERROR; | |
1da177e4 | 2097 | break; |
7c832835 BH |
2098 | case CMD_CONNECTION_LOST: |
2099 | printk(KERN_WARNING "cciss: cmd %p had " | |
2100 | "connection lost\n", c); | |
2101 | return_status = IO_ERROR; | |
1da177e4 | 2102 | break; |
7c832835 BH |
2103 | case CMD_ABORTED: |
2104 | printk(KERN_WARNING "cciss: cmd %p was " | |
2105 | "aborted\n", c); | |
2106 | return_status = IO_ERROR; | |
1da177e4 | 2107 | break; |
7c832835 BH |
2108 | case CMD_ABORT_FAILED: |
2109 | printk(KERN_WARNING "cciss: cmd %p reports " | |
2110 | "abort failed\n", c); | |
2111 | return_status = IO_ERROR; | |
2112 | break; | |
2113 | case CMD_UNSOLICITED_ABORT: | |
2114 | printk(KERN_WARNING | |
2115 | "cciss%d: unsolicited abort %p\n", ctlr, c); | |
2116 | if (c->retry_count < MAX_CMD_RETRIES) { | |
2117 | printk(KERN_WARNING | |
2118 | "cciss%d: retrying %p\n", ctlr, c); | |
2119 | c->retry_count++; | |
2120 | /* erase the old error information */ | |
2121 | memset(c->err_info, 0, | |
2122 | sizeof(ErrorInfo_struct)); | |
2123 | return_status = IO_OK; | |
2124 | INIT_COMPLETION(wait); | |
2125 | goto resend_cmd2; | |
2126 | } | |
2127 | return_status = IO_ERROR; | |
2128 | break; | |
2129 | default: | |
2130 | printk(KERN_WARNING "cciss: cmd %p returned " | |
2131 | "unknown status %x\n", c, | |
2132 | c->err_info->CommandStatus); | |
2133 | return_status = IO_ERROR; | |
1da177e4 | 2134 | } |
7c832835 | 2135 | } |
1da177e4 | 2136 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
2137 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2138 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
2139 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
2140 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
1da177e4 | 2141 | cmd_free(h, c, 0); |
7c832835 | 2142 | return return_status; |
1da177e4 | 2143 | } |
7c832835 | 2144 | |
1da177e4 | 2145 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
00988a35 | 2146 | int withirq, sector_t total_size, |
7c832835 BH |
2147 | unsigned int block_size, |
2148 | InquiryData_struct *inq_buff, | |
2149 | drive_info_struct *drv) | |
1da177e4 LT |
2150 | { |
2151 | int return_code; | |
00988a35 | 2152 | unsigned long t; |
00988a35 | 2153 | |
1da177e4 LT |
2154 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
2155 | if (withirq) | |
2156 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, | |
7c832835 BH |
2157 | inq_buff, sizeof(*inq_buff), 1, |
2158 | logvol, 0xC1, TYPE_CMD); | |
1da177e4 LT |
2159 | else |
2160 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, | |
7c832835 BH |
2161 | sizeof(*inq_buff), 1, logvol, 0xC1, NULL, |
2162 | TYPE_CMD); | |
1da177e4 | 2163 | if (return_code == IO_OK) { |
7c832835 | 2164 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 2165 | printk(KERN_WARNING |
7c832835 BH |
2166 | "cciss: reading geometry failed, volume " |
2167 | "does not support reading geometry\n"); | |
1da177e4 | 2168 | drv->heads = 255; |
7c832835 | 2169 | drv->sectors = 32; // Sectors per track |
7f42d3b8 | 2170 | drv->cylinders = total_size + 1; |
89f97ad1 | 2171 | drv->raid_level = RAID_UNKNOWN; |
1da177e4 | 2172 | } else { |
1da177e4 LT |
2173 | drv->heads = inq_buff->data_byte[6]; |
2174 | drv->sectors = inq_buff->data_byte[7]; | |
2175 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
2176 | drv->cylinders += inq_buff->data_byte[5]; | |
2177 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
2178 | } |
2179 | drv->block_size = block_size; | |
97c06978 | 2180 | drv->nr_blocks = total_size + 1; |
3f7705ea MW |
2181 | t = drv->heads * drv->sectors; |
2182 | if (t > 1) { | |
97c06978 MMOD |
2183 | sector_t real_size = total_size + 1; |
2184 | unsigned long rem = sector_div(real_size, t); | |
3f7705ea | 2185 | if (rem) |
97c06978 MMOD |
2186 | real_size++; |
2187 | drv->cylinders = real_size; | |
1da177e4 | 2188 | } |
7c832835 | 2189 | } else { /* Get geometry failed */ |
1da177e4 LT |
2190 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
2191 | } | |
cc088d10 | 2192 | printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n", |
7c832835 | 2193 | drv->heads, drv->sectors, drv->cylinders); |
1da177e4 | 2194 | } |
7c832835 | 2195 | |
1da177e4 | 2196 | static void |
00988a35 | 2197 | cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size, |
7c832835 | 2198 | unsigned int *block_size) |
1da177e4 | 2199 | { |
00988a35 | 2200 | ReadCapdata_struct *buf; |
1da177e4 | 2201 | int return_code; |
1aebe187 MK |
2202 | |
2203 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); | |
2204 | if (!buf) { | |
00988a35 MMOD |
2205 | printk(KERN_WARNING "cciss: out of memory\n"); |
2206 | return; | |
2207 | } | |
1aebe187 | 2208 | |
1da177e4 LT |
2209 | if (withirq) |
2210 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
2211 | ctlr, buf, sizeof(ReadCapdata_struct), |
2212 | 1, logvol, 0, TYPE_CMD); | |
1da177e4 LT |
2213 | else |
2214 | return_code = sendcmd(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
2215 | ctlr, buf, sizeof(ReadCapdata_struct), |
2216 | 1, logvol, 0, NULL, TYPE_CMD); | |
1da177e4 | 2217 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2218 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
2219 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
7c832835 | 2220 | } else { /* read capacity command failed */ |
1da177e4 LT |
2221 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
2222 | *total_size = 0; | |
2223 | *block_size = BLOCK_SIZE; | |
2224 | } | |
97c06978 | 2225 | if (*total_size != 0) |
7b92aadf | 2226 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2227 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2228 | kfree(buf); |
00988a35 MMOD |
2229 | } |
2230 | ||
2231 | static void | |
2232 | cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) | |
2233 | { | |
2234 | ReadCapdata_struct_16 *buf; | |
2235 | int return_code; | |
1aebe187 MK |
2236 | |
2237 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2238 | if (!buf) { | |
00988a35 MMOD |
2239 | printk(KERN_WARNING "cciss: out of memory\n"); |
2240 | return; | |
2241 | } | |
1aebe187 | 2242 | |
00988a35 MMOD |
2243 | if (withirq) { |
2244 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, | |
2245 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2246 | 1, logvol, 0, TYPE_CMD); | |
2247 | } | |
2248 | else { | |
2249 | return_code = sendcmd(CCISS_READ_CAPACITY_16, | |
2250 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2251 | 1, logvol, 0, NULL, TYPE_CMD); | |
2252 | } | |
2253 | if (return_code == IO_OK) { | |
4c1f2b31 AV |
2254 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
2255 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
00988a35 MMOD |
2256 | } else { /* read capacity command failed */ |
2257 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
2258 | *total_size = 0; | |
2259 | *block_size = BLOCK_SIZE; | |
2260 | } | |
7b92aadf | 2261 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2262 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2263 | kfree(buf); |
1da177e4 LT |
2264 | } |
2265 | ||
1da177e4 LT |
2266 | static int cciss_revalidate(struct gendisk *disk) |
2267 | { | |
2268 | ctlr_info_t *h = get_host(disk); | |
2269 | drive_info_struct *drv = get_drv(disk); | |
2270 | int logvol; | |
7c832835 | 2271 | int FOUND = 0; |
1da177e4 | 2272 | unsigned int block_size; |
00988a35 | 2273 | sector_t total_size; |
1da177e4 LT |
2274 | InquiryData_struct *inq_buff = NULL; |
2275 | ||
7c832835 BH |
2276 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
2277 | if (h->drv[logvol].LunID == drv->LunID) { | |
2278 | FOUND = 1; | |
1da177e4 LT |
2279 | break; |
2280 | } | |
2281 | } | |
2282 | ||
7c832835 BH |
2283 | if (!FOUND) |
2284 | return 1; | |
1da177e4 | 2285 | |
7c832835 BH |
2286 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2287 | if (inq_buff == NULL) { | |
2288 | printk(KERN_WARNING "cciss: out of memory\n"); | |
7c832835 BH |
2289 | return 1; |
2290 | } | |
00988a35 MMOD |
2291 | if (h->cciss_read == CCISS_READ_10) { |
2292 | cciss_read_capacity(h->ctlr, logvol, 1, | |
2293 | &total_size, &block_size); | |
2294 | } else { | |
2295 | cciss_read_capacity_16(h->ctlr, logvol, 1, | |
2296 | &total_size, &block_size); | |
2297 | } | |
7c832835 BH |
2298 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, |
2299 | inq_buff, drv); | |
1da177e4 | 2300 | |
ad2b9312 | 2301 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
1da177e4 LT |
2302 | set_capacity(disk, drv->nr_blocks); |
2303 | ||
1da177e4 LT |
2304 | kfree(inq_buff); |
2305 | return 0; | |
2306 | } | |
2307 | ||
2308 | /* | |
2309 | * Wait polling for a command to complete. | |
2310 | * The memory mapped FIFO is polled for the completion. | |
2311 | * Used only at init time, interrupts from the HBA are disabled. | |
2312 | */ | |
2313 | static unsigned long pollcomplete(int ctlr) | |
2314 | { | |
2315 | unsigned long done; | |
2316 | int i; | |
2317 | ||
2318 | /* Wait (up to 20 seconds) for a command to complete */ | |
2319 | ||
2320 | for (i = 20 * HZ; i > 0; i--) { | |
2321 | done = hba[ctlr]->access.command_completed(hba[ctlr]); | |
86e84862 NA |
2322 | if (done == FIFO_EMPTY) |
2323 | schedule_timeout_uninterruptible(1); | |
2324 | else | |
e2019b58 | 2325 | return done; |
1da177e4 LT |
2326 | } |
2327 | /* Invalid address to tell caller we ran out of time */ | |
2328 | return 1; | |
2329 | } | |
3da8b713 | 2330 | |
2331 | static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) | |
2332 | { | |
2333 | /* We get in here if sendcmd() is polling for completions | |
7c832835 BH |
2334 | and gets some command back that it wasn't expecting -- |
2335 | something other than that which it just sent down. | |
2336 | Ordinarily, that shouldn't happen, but it can happen when | |
3da8b713 | 2337 | the scsi tape stuff gets into error handling mode, and |
7c832835 | 2338 | starts using sendcmd() to try to abort commands and |
3da8b713 | 2339 | reset tape drives. In that case, sendcmd may pick up |
2340 | completions of commands that were sent to logical drives | |
7c832835 | 2341 | through the block i/o system, or cciss ioctls completing, etc. |
3da8b713 | 2342 | In that case, we need to save those completions for later |
2343 | processing by the interrupt handler. | |
7c832835 | 2344 | */ |
3da8b713 | 2345 | |
2346 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2347 | struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects; |
3da8b713 | 2348 | |
2349 | /* If it's not the scsi tape stuff doing error handling, (abort */ | |
2350 | /* or reset) then we don't expect anything weird. */ | |
2351 | if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) { | |
2352 | #endif | |
7c832835 BH |
2353 | printk(KERN_WARNING "cciss cciss%d: SendCmd " |
2354 | "Invalid command list address returned! (%lx)\n", | |
2355 | ctlr, complete); | |
3da8b713 | 2356 | /* not much we can do. */ |
2357 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2358 | return 1; | |
2359 | } | |
2360 | ||
2361 | /* We've sent down an abort or reset, but something else | |
2362 | has completed */ | |
f880632f | 2363 | if (srl->ncompletions >= (hba[ctlr]->nr_cmds + 2)) { |
3da8b713 | 2364 | /* Uh oh. No room to save it for later... */ |
2365 | printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, " | |
7c832835 | 2366 | "reject list overflow, command lost!\n", ctlr); |
3da8b713 | 2367 | return 1; |
2368 | } | |
2369 | /* Save it for later */ | |
2370 | srl->complete[srl->ncompletions] = complete; | |
2371 | srl->ncompletions++; | |
2372 | #endif | |
2373 | return 0; | |
2374 | } | |
2375 | ||
1da177e4 | 2376 | /* |
7c832835 BH |
2377 | * Send a command to the controller, and wait for it to complete. |
2378 | * Only used at init time. | |
1da177e4 | 2379 | */ |
7c832835 BH |
2380 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, |
2381 | 1: address logical volume log_unit, | |
2382 | 2: periph device address is scsi3addr */ | |
2383 | unsigned int log_unit, | |
2384 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) | |
1da177e4 LT |
2385 | { |
2386 | CommandList_struct *c; | |
2387 | int i; | |
2388 | unsigned long complete; | |
7c832835 | 2389 | ctlr_info_t *info_p = hba[ctlr]; |
1da177e4 | 2390 | u64bit buff_dma_handle; |
3da8b713 | 2391 | int status, done = 0; |
1da177e4 LT |
2392 | |
2393 | if ((c = cmd_alloc(info_p, 1)) == NULL) { | |
2394 | printk(KERN_WARNING "cciss: unable to get memory"); | |
e2019b58 | 2395 | return IO_ERROR; |
1da177e4 LT |
2396 | } |
2397 | status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 2398 | log_unit, page_code, scsi3addr, cmd_type); |
1da177e4 LT |
2399 | if (status != IO_OK) { |
2400 | cmd_free(info_p, c, 1); | |
2401 | return status; | |
2402 | } | |
7c832835 | 2403 | resend_cmd1: |
1da177e4 | 2404 | /* |
7c832835 BH |
2405 | * Disable interrupt |
2406 | */ | |
1da177e4 LT |
2407 | #ifdef CCISS_DEBUG |
2408 | printk(KERN_DEBUG "cciss: turning intr off\n"); | |
7c832835 BH |
2409 | #endif /* CCISS_DEBUG */ |
2410 | info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF); | |
2411 | ||
1da177e4 | 2412 | /* Make sure there is room in the command FIFO */ |
7c832835 | 2413 | /* Actually it should be completely empty at this time */ |
3da8b713 | 2414 | /* unless we are in here doing error handling for the scsi */ |
2415 | /* tape side of the driver. */ | |
7c832835 | 2416 | for (i = 200000; i > 0; i--) { |
1da177e4 | 2417 | /* if fifo isn't full go */ |
7c832835 BH |
2418 | if (!(info_p->access.fifo_full(info_p))) { |
2419 | ||
2420 | break; | |
2421 | } | |
2422 | udelay(10); | |
2423 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," | |
2424 | " waiting!\n", ctlr); | |
2425 | } | |
2426 | /* | |
2427 | * Send the cmd | |
2428 | */ | |
2429 | info_p->access.submit_command(info_p, c); | |
3da8b713 | 2430 | done = 0; |
2431 | do { | |
2432 | complete = pollcomplete(ctlr); | |
1da177e4 LT |
2433 | |
2434 | #ifdef CCISS_DEBUG | |
3da8b713 | 2435 | printk(KERN_DEBUG "cciss: command completed\n"); |
7c832835 | 2436 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2437 | |
3da8b713 | 2438 | if (complete == 1) { |
7c832835 BH |
2439 | printk(KERN_WARNING |
2440 | "cciss cciss%d: SendCmd Timeout out, " | |
2441 | "No command list address returned!\n", ctlr); | |
3da8b713 | 2442 | status = IO_ERROR; |
2443 | done = 1; | |
2444 | break; | |
2445 | } | |
2446 | ||
2447 | /* This will need to change for direct lookup completions */ | |
7c832835 BH |
2448 | if ((complete & CISS_ERROR_BIT) |
2449 | && (complete & ~CISS_ERROR_BIT) == c->busaddr) { | |
2450 | /* if data overrun or underun on Report command | |
2451 | ignore it | |
2452 | */ | |
1da177e4 LT |
2453 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || |
2454 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || | |
2455 | (c->Request.CDB[0] == CISS_INQUIRY)) && | |
7c832835 BH |
2456 | ((c->err_info->CommandStatus == |
2457 | CMD_DATA_OVERRUN) || | |
2458 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN) | |
2459 | )) { | |
1da177e4 LT |
2460 | complete = c->busaddr; |
2461 | } else { | |
2462 | if (c->err_info->CommandStatus == | |
7c832835 | 2463 | CMD_UNSOLICITED_ABORT) { |
1da177e4 | 2464 | printk(KERN_WARNING "cciss%d: " |
7c832835 BH |
2465 | "unsolicited abort %p\n", |
2466 | ctlr, c); | |
1da177e4 LT |
2467 | if (c->retry_count < MAX_CMD_RETRIES) { |
2468 | printk(KERN_WARNING | |
7c832835 BH |
2469 | "cciss%d: retrying %p\n", |
2470 | ctlr, c); | |
1da177e4 LT |
2471 | c->retry_count++; |
2472 | /* erase the old error */ | |
2473 | /* information */ | |
2474 | memset(c->err_info, 0, | |
7c832835 BH |
2475 | sizeof |
2476 | (ErrorInfo_struct)); | |
1da177e4 LT |
2477 | goto resend_cmd1; |
2478 | } else { | |
2479 | printk(KERN_WARNING | |
7c832835 BH |
2480 | "cciss%d: retried %p too " |
2481 | "many times\n", ctlr, c); | |
1da177e4 LT |
2482 | status = IO_ERROR; |
2483 | goto cleanup1; | |
2484 | } | |
7c832835 BH |
2485 | } else if (c->err_info->CommandStatus == |
2486 | CMD_UNABORTABLE) { | |
2487 | printk(KERN_WARNING | |
2488 | "cciss%d: command could not be aborted.\n", | |
2489 | ctlr); | |
3da8b713 | 2490 | status = IO_ERROR; |
2491 | goto cleanup1; | |
1da177e4 LT |
2492 | } |
2493 | printk(KERN_WARNING "ciss ciss%d: sendcmd" | |
7c832835 BH |
2494 | " Error %x \n", ctlr, |
2495 | c->err_info->CommandStatus); | |
1da177e4 | 2496 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
7c832835 BH |
2497 | " offensive info\n" |
2498 | " size %x\n num %x value %x\n", | |
2499 | ctlr, | |
2500 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2501 | offense_size, | |
2502 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2503 | offense_num, | |
2504 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2505 | offense_value); | |
1da177e4 LT |
2506 | status = IO_ERROR; |
2507 | goto cleanup1; | |
2508 | } | |
2509 | } | |
3da8b713 | 2510 | /* This will need changing for direct lookup completions */ |
7c832835 | 2511 | if (complete != c->busaddr) { |
3da8b713 | 2512 | if (add_sendcmd_reject(cmd, ctlr, complete) != 0) { |
7c832835 | 2513 | BUG(); /* we are pretty much hosed if we get here. */ |
3da8b713 | 2514 | } |
2515 | continue; | |
7c832835 | 2516 | } else |
3da8b713 | 2517 | done = 1; |
7c832835 BH |
2518 | } while (!done); |
2519 | ||
2520 | cleanup1: | |
1da177e4 | 2521 | /* unlock the data buffer from DMA */ |
bb2a37bf MM |
2522 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2523 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
1da177e4 | 2524 | pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val, |
7c832835 | 2525 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
3da8b713 | 2526 | #ifdef CONFIG_CISS_SCSI_TAPE |
2527 | /* if we saved some commands for later, process them now. */ | |
2528 | if (info_p->scsi_rejects.ncompletions > 0) | |
7d12e780 | 2529 | do_cciss_intr(0, info_p); |
3da8b713 | 2530 | #endif |
1da177e4 | 2531 | cmd_free(info_p, c, 1); |
e2019b58 | 2532 | return status; |
7c832835 BH |
2533 | } |
2534 | ||
1da177e4 LT |
2535 | /* |
2536 | * Map (physical) PCI mem into (virtual) kernel space | |
2537 | */ | |
2538 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2539 | { | |
7c832835 BH |
2540 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2541 | ulong page_offs = ((ulong) base) - page_base; | |
2542 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2543 | |
7c832835 | 2544 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2545 | } |
2546 | ||
7c832835 BH |
2547 | /* |
2548 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2549 | * the Q to wait for completion. | |
2550 | */ | |
2551 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
2552 | { |
2553 | CommandList_struct *c; | |
7c832835 | 2554 | |
8a3173de JA |
2555 | while (!hlist_empty(&h->reqQ)) { |
2556 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); | |
1da177e4 LT |
2557 | /* can't do anything if fifo is full */ |
2558 | if ((h->access.fifo_full(h))) { | |
2559 | printk(KERN_WARNING "cciss: fifo full\n"); | |
2560 | break; | |
2561 | } | |
2562 | ||
7c832835 | 2563 | /* Get the first entry from the Request Q */ |
8a3173de | 2564 | removeQ(c); |
1da177e4 | 2565 | h->Qdepth--; |
7c832835 BH |
2566 | |
2567 | /* Tell the controller execute command */ | |
1da177e4 | 2568 | h->access.submit_command(h, c); |
7c832835 BH |
2569 | |
2570 | /* Put job onto the completed Q */ | |
8a3173de | 2571 | addQ(&h->cmpQ, c); |
1da177e4 LT |
2572 | } |
2573 | } | |
7c832835 | 2574 | |
1da177e4 LT |
2575 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
2576 | /* Zeros out the error record and then resends the command back */ | |
2577 | /* to the controller */ | |
7c832835 | 2578 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
2579 | { |
2580 | /* erase the old error information */ | |
2581 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2582 | ||
2583 | /* add it to software queue and then send it to the controller */ | |
8a3173de | 2584 | addQ(&h->reqQ, c); |
1da177e4 | 2585 | h->Qdepth++; |
7c832835 | 2586 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
2587 | h->maxQsinceinit = h->Qdepth; |
2588 | ||
2589 | start_io(h); | |
2590 | } | |
a9925a06 | 2591 | |
1a614f50 SC |
2592 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
2593 | unsigned int msg_byte, unsigned int host_byte, | |
2594 | unsigned int driver_byte) | |
2595 | { | |
2596 | /* inverse of macros in scsi.h */ | |
2597 | return (scsi_status_byte & 0xff) | | |
2598 | ((msg_byte & 0xff) << 8) | | |
2599 | ((host_byte & 0xff) << 16) | | |
2600 | ((driver_byte & 0xff) << 24); | |
2601 | } | |
2602 | ||
0a9279cc MM |
2603 | static inline int evaluate_target_status(ctlr_info_t *h, |
2604 | CommandList_struct *cmd, int *retry_cmd) | |
03bbfee5 MMOD |
2605 | { |
2606 | unsigned char sense_key; | |
1a614f50 SC |
2607 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
2608 | int error_value; | |
2609 | ||
0a9279cc | 2610 | *retry_cmd = 0; |
1a614f50 SC |
2611 | /* If we get in here, it means we got "target status", that is, scsi status */ |
2612 | status_byte = cmd->err_info->ScsiStatus; | |
2613 | driver_byte = DRIVER_OK; | |
2614 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ | |
2615 | ||
2616 | if (blk_pc_request(cmd->rq)) | |
2617 | host_byte = DID_PASSTHROUGH; | |
2618 | else | |
2619 | host_byte = DID_OK; | |
2620 | ||
2621 | error_value = make_status_bytes(status_byte, msg_byte, | |
2622 | host_byte, driver_byte); | |
03bbfee5 | 2623 | |
1a614f50 | 2624 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
03bbfee5 MMOD |
2625 | if (!blk_pc_request(cmd->rq)) |
2626 | printk(KERN_WARNING "cciss: cmd %p " | |
2627 | "has SCSI Status 0x%x\n", | |
2628 | cmd, cmd->err_info->ScsiStatus); | |
1a614f50 | 2629 | return error_value; |
03bbfee5 MMOD |
2630 | } |
2631 | ||
2632 | /* check the sense key */ | |
2633 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
2634 | /* no status or recovered error */ | |
1a614f50 SC |
2635 | if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq)) |
2636 | error_value = 0; | |
03bbfee5 | 2637 | |
0a9279cc MM |
2638 | if (check_for_unit_attention(h, cmd)) { |
2639 | *retry_cmd = !blk_pc_request(cmd->rq); | |
2640 | return 0; | |
2641 | } | |
2642 | ||
03bbfee5 | 2643 | if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */ |
1a614f50 | 2644 | if (error_value != 0) |
03bbfee5 MMOD |
2645 | printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" |
2646 | " sense key = 0x%x\n", cmd, sense_key); | |
1a614f50 | 2647 | return error_value; |
03bbfee5 MMOD |
2648 | } |
2649 | ||
2650 | /* SG_IO or similar, copy sense data back */ | |
2651 | if (cmd->rq->sense) { | |
2652 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) | |
2653 | cmd->rq->sense_len = cmd->err_info->SenseLen; | |
2654 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, | |
2655 | cmd->rq->sense_len); | |
2656 | } else | |
2657 | cmd->rq->sense_len = 0; | |
2658 | ||
1a614f50 | 2659 | return error_value; |
03bbfee5 MMOD |
2660 | } |
2661 | ||
7c832835 | 2662 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
2663 | * buffers for the completed job. Note that this function does not need |
2664 | * to hold the hba/queue lock. | |
7c832835 BH |
2665 | */ |
2666 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
2667 | int timeout) | |
1da177e4 | 2668 | { |
1da177e4 | 2669 | int retry_cmd = 0; |
198b7660 MMOD |
2670 | struct request *rq = cmd->rq; |
2671 | ||
2672 | rq->errors = 0; | |
7c832835 | 2673 | |
1da177e4 | 2674 | if (timeout) |
1a614f50 | 2675 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
1da177e4 | 2676 | |
d38ae168 MMOD |
2677 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
2678 | goto after_error_processing; | |
7c832835 | 2679 | |
d38ae168 | 2680 | switch (cmd->err_info->CommandStatus) { |
d38ae168 | 2681 | case CMD_TARGET_STATUS: |
0a9279cc | 2682 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
d38ae168 MMOD |
2683 | break; |
2684 | case CMD_DATA_UNDERRUN: | |
03bbfee5 MMOD |
2685 | if (blk_fs_request(cmd->rq)) { |
2686 | printk(KERN_WARNING "cciss: cmd %p has" | |
2687 | " completed with data underrun " | |
2688 | "reported\n", cmd); | |
c3a4d78c | 2689 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
03bbfee5 | 2690 | } |
d38ae168 MMOD |
2691 | break; |
2692 | case CMD_DATA_OVERRUN: | |
03bbfee5 MMOD |
2693 | if (blk_fs_request(cmd->rq)) |
2694 | printk(KERN_WARNING "cciss: cmd %p has" | |
2695 | " completed with data overrun " | |
2696 | "reported\n", cmd); | |
d38ae168 MMOD |
2697 | break; |
2698 | case CMD_INVALID: | |
2699 | printk(KERN_WARNING "cciss: cmd %p is " | |
2700 | "reported invalid\n", cmd); | |
1a614f50 SC |
2701 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2702 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2703 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2704 | break; |
2705 | case CMD_PROTOCOL_ERR: | |
2706 | printk(KERN_WARNING "cciss: cmd %p has " | |
2707 | "protocol error \n", cmd); | |
1a614f50 SC |
2708 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2709 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2710 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2711 | break; |
2712 | case CMD_HARDWARE_ERR: | |
2713 | printk(KERN_WARNING "cciss: cmd %p had " | |
2714 | " hardware error\n", cmd); | |
1a614f50 SC |
2715 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2716 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2717 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2718 | break; |
2719 | case CMD_CONNECTION_LOST: | |
2720 | printk(KERN_WARNING "cciss: cmd %p had " | |
2721 | "connection lost\n", cmd); | |
1a614f50 SC |
2722 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2723 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2724 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2725 | break; |
2726 | case CMD_ABORTED: | |
2727 | printk(KERN_WARNING "cciss: cmd %p was " | |
2728 | "aborted\n", cmd); | |
1a614f50 SC |
2729 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2730 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2731 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
2732 | break; |
2733 | case CMD_ABORT_FAILED: | |
2734 | printk(KERN_WARNING "cciss: cmd %p reports " | |
2735 | "abort failed\n", cmd); | |
1a614f50 SC |
2736 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2737 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2738 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2739 | break; |
2740 | case CMD_UNSOLICITED_ABORT: | |
2741 | printk(KERN_WARNING "cciss%d: unsolicited " | |
2742 | "abort %p\n", h->ctlr, cmd); | |
2743 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
2744 | retry_cmd = 1; | |
2745 | printk(KERN_WARNING | |
2746 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
2747 | cmd->retry_count++; | |
2748 | } else | |
2749 | printk(KERN_WARNING | |
2750 | "cciss%d: %p retried too " | |
2751 | "many times\n", h->ctlr, cmd); | |
1a614f50 SC |
2752 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2753 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2754 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
2755 | break; |
2756 | case CMD_TIMEOUT: | |
2757 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
1a614f50 SC |
2758 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2759 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2760 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2761 | break; |
2762 | default: | |
2763 | printk(KERN_WARNING "cciss: cmd %p returned " | |
2764 | "unknown status %x\n", cmd, | |
2765 | cmd->err_info->CommandStatus); | |
1a614f50 SC |
2766 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2767 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2768 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
1da177e4 | 2769 | } |
d38ae168 MMOD |
2770 | |
2771 | after_error_processing: | |
2772 | ||
1da177e4 | 2773 | /* We need to return this command */ |
7c832835 BH |
2774 | if (retry_cmd) { |
2775 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 2776 | return; |
7c832835 | 2777 | } |
03bbfee5 | 2778 | cmd->rq->completion_data = cmd; |
a9925a06 | 2779 | blk_complete_request(cmd->rq); |
1da177e4 LT |
2780 | } |
2781 | ||
7c832835 BH |
2782 | /* |
2783 | * Get a request and submit it to the controller. | |
1da177e4 | 2784 | */ |
165125e1 | 2785 | static void do_cciss_request(struct request_queue *q) |
1da177e4 | 2786 | { |
7c832835 | 2787 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 2788 | CommandList_struct *c; |
00988a35 MMOD |
2789 | sector_t start_blk; |
2790 | int seg; | |
1da177e4 LT |
2791 | struct request *creq; |
2792 | u64bit temp64; | |
2793 | struct scatterlist tmp_sg[MAXSGENTRIES]; | |
2794 | drive_info_struct *drv; | |
2795 | int i, dir; | |
2796 | ||
2797 | /* We call start_io here in case there is a command waiting on the | |
2798 | * queue that has not been sent. | |
7c832835 | 2799 | */ |
1da177e4 LT |
2800 | if (blk_queue_plugged(q)) |
2801 | goto startio; | |
2802 | ||
7c832835 | 2803 | queue: |
9934c8c0 | 2804 | creq = blk_peek_request(q); |
1da177e4 LT |
2805 | if (!creq) |
2806 | goto startio; | |
2807 | ||
089fe1b2 | 2808 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
1da177e4 | 2809 | |
7c832835 | 2810 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
2811 | goto full; |
2812 | ||
9934c8c0 | 2813 | blk_start_request(creq); |
1da177e4 LT |
2814 | |
2815 | spin_unlock_irq(q->queue_lock); | |
2816 | ||
2817 | c->cmd_type = CMD_RWREQ; | |
2818 | c->rq = creq; | |
7c832835 BH |
2819 | |
2820 | /* fill in the request */ | |
1da177e4 | 2821 | drv = creq->rq_disk->private_data; |
7c832835 | 2822 | c->Header.ReplyQueue = 0; // unused in simple mode |
33079b21 MM |
2823 | /* got command from pool, so use the command block index instead */ |
2824 | /* for direct lookups. */ | |
2825 | /* The first 2 bits are reserved for controller error reporting. */ | |
2826 | c->Header.Tag.lower = (c->cmdindex << 3); | |
7c832835 BH |
2827 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
2828 | c->Header.LUN.LogDev.VolId = drv->LunID; | |
1da177e4 | 2829 | c->Header.LUN.LogDev.Mode = 1; |
7c832835 BH |
2830 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
2831 | c->Request.Type.Type = TYPE_CMD; // It is a command. | |
2832 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2833 | c->Request.Type.Direction = | |
a52de245 | 2834 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
7c832835 BH |
2835 | c->Request.Timeout = 0; // Don't time out |
2836 | c->Request.CDB[0] = | |
00988a35 | 2837 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
83096ebf | 2838 | start_blk = blk_rq_pos(creq); |
1da177e4 | 2839 | #ifdef CCISS_DEBUG |
83096ebf TH |
2840 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", |
2841 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); | |
7c832835 | 2842 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2843 | |
45711f1a | 2844 | sg_init_table(tmp_sg, MAXSGENTRIES); |
1da177e4 LT |
2845 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
2846 | ||
7c832835 | 2847 | /* get the DMA records for the setup */ |
1da177e4 LT |
2848 | if (c->Request.Type.Direction == XFER_READ) |
2849 | dir = PCI_DMA_FROMDEVICE; | |
2850 | else | |
2851 | dir = PCI_DMA_TODEVICE; | |
2852 | ||
7c832835 | 2853 | for (i = 0; i < seg; i++) { |
1da177e4 | 2854 | c->SG[i].Len = tmp_sg[i].length; |
45711f1a | 2855 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
7c832835 BH |
2856 | tmp_sg[i].offset, |
2857 | tmp_sg[i].length, dir); | |
1da177e4 | 2858 | c->SG[i].Addr.lower = temp64.val32.lower; |
7c832835 BH |
2859 | c->SG[i].Addr.upper = temp64.val32.upper; |
2860 | c->SG[i].Ext = 0; // we are not chaining | |
1da177e4 | 2861 | } |
7c832835 BH |
2862 | /* track how many SG entries we are using */ |
2863 | if (seg > h->maxSG) | |
2864 | h->maxSG = seg; | |
1da177e4 LT |
2865 | |
2866 | #ifdef CCISS_DEBUG | |
83096ebf TH |
2867 | printk(KERN_DEBUG "cciss: Submitting %u sectors in %d segments\n", |
2868 | blk_rq_sectors(creq), seg); | |
7c832835 | 2869 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
2870 | |
2871 | c->Header.SGList = c->Header.SGTotal = seg; | |
03bbfee5 MMOD |
2872 | if (likely(blk_fs_request(creq))) { |
2873 | if(h->cciss_read == CCISS_READ_10) { | |
2874 | c->Request.CDB[1] = 0; | |
2875 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB | |
2876 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; | |
2877 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
2878 | c->Request.CDB[5] = start_blk & 0xff; | |
2879 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB | |
83096ebf TH |
2880 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
2881 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
2882 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
2883 | } else { | |
582539e5 RD |
2884 | u32 upper32 = upper_32_bits(start_blk); |
2885 | ||
03bbfee5 MMOD |
2886 | c->Request.CDBLen = 16; |
2887 | c->Request.CDB[1]= 0; | |
582539e5 RD |
2888 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; //MSB |
2889 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; | |
2890 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; | |
2891 | c->Request.CDB[5]= upper32 & 0xff; | |
03bbfee5 MMOD |
2892 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
2893 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
2894 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
2895 | c->Request.CDB[9]= start_blk & 0xff; | |
83096ebf TH |
2896 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
2897 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; | |
2898 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; | |
2899 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
2900 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
2901 | } | |
2902 | } else if (blk_pc_request(creq)) { | |
2903 | c->Request.CDBLen = creq->cmd_len; | |
2904 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); | |
00988a35 | 2905 | } else { |
03bbfee5 MMOD |
2906 | printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); |
2907 | BUG(); | |
00988a35 | 2908 | } |
1da177e4 LT |
2909 | |
2910 | spin_lock_irq(q->queue_lock); | |
2911 | ||
8a3173de | 2912 | addQ(&h->reqQ, c); |
1da177e4 | 2913 | h->Qdepth++; |
7c832835 BH |
2914 | if (h->Qdepth > h->maxQsinceinit) |
2915 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
2916 | |
2917 | goto queue; | |
00988a35 | 2918 | full: |
1da177e4 | 2919 | blk_stop_queue(q); |
00988a35 | 2920 | startio: |
1da177e4 LT |
2921 | /* We will already have the driver lock here so not need |
2922 | * to lock it. | |
7c832835 | 2923 | */ |
1da177e4 LT |
2924 | start_io(h); |
2925 | } | |
2926 | ||
3da8b713 | 2927 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
2928 | { | |
2929 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2930 | /* Any rejects from sendcmd() lying around? Process them first */ | |
2931 | if (h->scsi_rejects.ncompletions == 0) | |
2932 | return h->access.command_completed(h); | |
2933 | else { | |
2934 | struct sendcmd_reject_list *srl; | |
2935 | int n; | |
2936 | srl = &h->scsi_rejects; | |
2937 | n = --srl->ncompletions; | |
2938 | /* printk("cciss%d: processing saved reject\n", h->ctlr); */ | |
2939 | printk("p"); | |
2940 | return srl->complete[n]; | |
2941 | } | |
2942 | #else | |
2943 | return h->access.command_completed(h); | |
2944 | #endif | |
2945 | } | |
2946 | ||
2947 | static inline int interrupt_pending(ctlr_info_t *h) | |
2948 | { | |
2949 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2950 | return (h->access.intr_pending(h) |
3da8b713 | 2951 | || (h->scsi_rejects.ncompletions > 0)); |
2952 | #else | |
2953 | return h->access.intr_pending(h); | |
2954 | #endif | |
2955 | } | |
2956 | ||
2957 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
2958 | { | |
2959 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
2960 | return (((h->access.intr_pending(h) == 0) || |
2961 | (h->interrupts_enabled == 0)) | |
2962 | && (h->scsi_rejects.ncompletions == 0)); | |
3da8b713 | 2963 | #else |
7c832835 | 2964 | return (((h->access.intr_pending(h) == 0) || |
3da8b713 | 2965 | (h->interrupts_enabled == 0))); |
2966 | #endif | |
2967 | } | |
2968 | ||
7d12e780 | 2969 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
1da177e4 LT |
2970 | { |
2971 | ctlr_info_t *h = dev_id; | |
2972 | CommandList_struct *c; | |
2973 | unsigned long flags; | |
33079b21 | 2974 | __u32 a, a1, a2; |
1da177e4 | 2975 | |
3da8b713 | 2976 | if (interrupt_not_for_us(h)) |
1da177e4 | 2977 | return IRQ_NONE; |
1da177e4 LT |
2978 | /* |
2979 | * If there are completed commands in the completion queue, | |
2980 | * we had better do something about it. | |
2981 | */ | |
2982 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 2983 | while (interrupt_pending(h)) { |
7c832835 | 2984 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
1da177e4 | 2985 | a1 = a; |
33079b21 MM |
2986 | if ((a & 0x04)) { |
2987 | a2 = (a >> 3); | |
f880632f | 2988 | if (a2 >= h->nr_cmds) { |
7c832835 BH |
2989 | printk(KERN_WARNING |
2990 | "cciss: controller cciss%d failed, stopping.\n", | |
2991 | h->ctlr); | |
33079b21 MM |
2992 | fail_all_cmds(h->ctlr); |
2993 | return IRQ_HANDLED; | |
2994 | } | |
2995 | ||
2996 | c = h->cmd_pool + a2; | |
2997 | a = c->busaddr; | |
2998 | ||
2999 | } else { | |
8a3173de JA |
3000 | struct hlist_node *tmp; |
3001 | ||
7c832835 | 3002 | a &= ~3; |
8a3173de JA |
3003 | c = NULL; |
3004 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { | |
3005 | if (c->busaddr == a) | |
7c832835 BH |
3006 | break; |
3007 | } | |
33079b21 | 3008 | } |
1da177e4 LT |
3009 | /* |
3010 | * If we've found the command, take it off the | |
3011 | * completion Q and free it | |
3012 | */ | |
8a3173de JA |
3013 | if (c && c->busaddr == a) { |
3014 | removeQ(c); | |
1da177e4 LT |
3015 | if (c->cmd_type == CMD_RWREQ) { |
3016 | complete_command(h, c, 0); | |
3017 | } else if (c->cmd_type == CMD_IOCTL_PEND) { | |
3018 | complete(c->waiting); | |
3019 | } | |
3020 | # ifdef CONFIG_CISS_SCSI_TAPE | |
3021 | else if (c->cmd_type == CMD_SCSI) | |
3022 | complete_scsi_command(c, 0, a1); | |
3023 | # endif | |
3024 | continue; | |
3025 | } | |
3026 | } | |
3027 | } | |
3028 | ||
1da177e4 LT |
3029 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
3030 | return IRQ_HANDLED; | |
3031 | } | |
7c832835 | 3032 | |
0a9279cc MM |
3033 | static int scan_thread(void *data) |
3034 | { | |
3035 | ctlr_info_t *h = data; | |
3036 | int rc; | |
3037 | DECLARE_COMPLETION_ONSTACK(wait); | |
3038 | h->rescan_wait = &wait; | |
3039 | ||
3040 | for (;;) { | |
3041 | rc = wait_for_completion_interruptible(&wait); | |
3042 | if (kthread_should_stop()) | |
3043 | break; | |
3044 | if (!rc) | |
3045 | rebuild_lun_table(h, 0); | |
3046 | } | |
3047 | return 0; | |
3048 | } | |
3049 | ||
3050 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) | |
3051 | { | |
3052 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) | |
3053 | return 0; | |
3054 | ||
3055 | switch (c->err_info->SenseInfo[12]) { | |
3056 | case STATE_CHANGED: | |
3057 | printk(KERN_WARNING "cciss%d: a state change " | |
3058 | "detected, command retried\n", h->ctlr); | |
3059 | return 1; | |
3060 | break; | |
3061 | case LUN_FAILED: | |
3062 | printk(KERN_WARNING "cciss%d: LUN failure " | |
3063 | "detected, action required\n", h->ctlr); | |
3064 | return 1; | |
3065 | break; | |
3066 | case REPORT_LUNS_CHANGED: | |
3067 | printk(KERN_WARNING "cciss%d: report LUN data " | |
3068 | "changed\n", h->ctlr); | |
3069 | if (h->rescan_wait) | |
3070 | complete(h->rescan_wait); | |
3071 | return 1; | |
3072 | break; | |
3073 | case POWER_OR_RESET: | |
3074 | printk(KERN_WARNING "cciss%d: a power on " | |
3075 | "or device reset detected\n", h->ctlr); | |
3076 | return 1; | |
3077 | break; | |
3078 | case UNIT_ATTENTION_CLEARED: | |
3079 | printk(KERN_WARNING "cciss%d: unit attention " | |
3080 | "cleared by another initiator\n", h->ctlr); | |
3081 | return 1; | |
3082 | break; | |
3083 | default: | |
3084 | printk(KERN_WARNING "cciss%d: unknown " | |
3085 | "unit attention detected\n", h->ctlr); | |
3086 | return 1; | |
3087 | } | |
3088 | } | |
3089 | ||
7c832835 | 3090 | /* |
d14c4ab5 | 3091 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 3092 | * the io functions. |
7c832835 | 3093 | * This is for debug only. |
1da177e4 LT |
3094 | */ |
3095 | #ifdef CCISS_DEBUG | |
7c832835 | 3096 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 LT |
3097 | { |
3098 | int i; | |
3099 | char temp_name[17]; | |
3100 | ||
3101 | printk("Controller Configuration information\n"); | |
3102 | printk("------------------------------------\n"); | |
7c832835 | 3103 | for (i = 0; i < 4; i++) |
1da177e4 | 3104 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
3105 | temp_name[4] = '\0'; |
3106 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 3107 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
3108 | printk(" Transport methods supported = 0x%x\n", |
3109 | readl(&(tb->TransportSupport))); | |
3110 | printk(" Transport methods active = 0x%x\n", | |
3111 | readl(&(tb->TransportActive))); | |
3112 | printk(" Requested transport Method = 0x%x\n", | |
3113 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 3114 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 3115 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 3116 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
3117 | readl(&(tb->HostWrite.CoalIntCount))); |
3118 | printk(" Max outstanding commands = 0x%d\n", | |
3119 | readl(&(tb->CmdsOutMax))); | |
3120 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
3121 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
3122 | temp_name[i] = readb(&(tb->ServerName[i])); |
3123 | temp_name[16] = '\0'; | |
3124 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 3125 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
1da177e4 | 3126 | } |
7c832835 | 3127 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3128 | |
7c832835 | 3129 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
3130 | { |
3131 | int i, offset, mem_type, bar_type; | |
7c832835 | 3132 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
3133 | return 0; |
3134 | offset = 0; | |
7c832835 BH |
3135 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
3136 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
3137 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
3138 | offset += 4; | |
3139 | else { | |
3140 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 3141 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 3142 | switch (mem_type) { |
7c832835 BH |
3143 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
3144 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
3145 | offset += 4; /* 32 bit */ | |
3146 | break; | |
3147 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
3148 | offset += 8; | |
3149 | break; | |
3150 | default: /* reserved in PCI 2.2 */ | |
3151 | printk(KERN_WARNING | |
3152 | "Base address is invalid\n"); | |
3153 | return -1; | |
1da177e4 LT |
3154 | break; |
3155 | } | |
3156 | } | |
7c832835 BH |
3157 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
3158 | return i + 1; | |
1da177e4 LT |
3159 | } |
3160 | return -1; | |
3161 | } | |
3162 | ||
fb86a35b MM |
3163 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
3164 | * controllers that are capable. If not, we use IO-APIC mode. | |
3165 | */ | |
3166 | ||
7c832835 BH |
3167 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
3168 | struct pci_dev *pdev, __u32 board_id) | |
fb86a35b MM |
3169 | { |
3170 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3171 | int err; |
3172 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
3173 | {0, 2}, {0, 3} | |
3174 | }; | |
fb86a35b MM |
3175 | |
3176 | /* Some boards advertise MSI but don't really support it */ | |
3177 | if ((board_id == 0x40700E11) || | |
7c832835 BH |
3178 | (board_id == 0x40800E11) || |
3179 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
fb86a35b MM |
3180 | goto default_int_mode; |
3181 | ||
7c832835 BH |
3182 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
3183 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); | |
3184 | if (!err) { | |
3185 | c->intr[0] = cciss_msix_entries[0].vector; | |
3186 | c->intr[1] = cciss_msix_entries[1].vector; | |
3187 | c->intr[2] = cciss_msix_entries[2].vector; | |
3188 | c->intr[3] = cciss_msix_entries[3].vector; | |
3189 | c->msix_vector = 1; | |
3190 | return; | |
3191 | } | |
3192 | if (err > 0) { | |
3193 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
3194 | "available\n", err); | |
1ecb9c0f | 3195 | goto default_int_mode; |
7c832835 BH |
3196 | } else { |
3197 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
3198 | err); | |
1ecb9c0f | 3199 | goto default_int_mode; |
7c832835 BH |
3200 | } |
3201 | } | |
3202 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
3203 | if (!pci_enable_msi(pdev)) { | |
7c832835 | 3204 | c->msi_vector = 1; |
7c832835 BH |
3205 | } else { |
3206 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
7c832835 BH |
3207 | } |
3208 | } | |
1ecb9c0f | 3209 | default_int_mode: |
7c832835 | 3210 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 3211 | /* if we get here we're going to use the default interrupt mode */ |
7c832835 | 3212 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
fb86a35b MM |
3213 | return; |
3214 | } | |
3215 | ||
7d1fd970 | 3216 | static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
1da177e4 LT |
3217 | { |
3218 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
3219 | __u32 board_id, scratchpad = 0; | |
3220 | __u64 cfg_offset; | |
3221 | __u32 cfg_base_addr; | |
3222 | __u64 cfg_base_addr_index; | |
c33ac89b | 3223 | int i, err; |
1da177e4 LT |
3224 | |
3225 | /* check to see if controller has been disabled */ | |
3226 | /* BEFORE trying to enable it */ | |
7c832835 BH |
3227 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
3228 | if (!(command & 0x02)) { | |
3229 | printk(KERN_WARNING | |
3230 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 3231 | return -ENODEV; |
1da177e4 LT |
3232 | } |
3233 | ||
c33ac89b | 3234 | err = pci_enable_device(pdev); |
7c832835 | 3235 | if (err) { |
1da177e4 | 3236 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 3237 | return err; |
1da177e4 | 3238 | } |
1da177e4 | 3239 | |
4e570309 BH |
3240 | err = pci_request_regions(pdev, "cciss"); |
3241 | if (err) { | |
3242 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 3243 | "aborting\n"); |
872225ca | 3244 | return err; |
4e570309 BH |
3245 | } |
3246 | ||
1da177e4 LT |
3247 | subsystem_vendor_id = pdev->subsystem_vendor; |
3248 | subsystem_device_id = pdev->subsystem_device; | |
3249 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
7c832835 | 3250 | subsystem_vendor_id); |
1da177e4 | 3251 | |
1da177e4 LT |
3252 | #ifdef CCISS_DEBUG |
3253 | printk("command = %x\n", command); | |
3254 | printk("irq = %x\n", pdev->irq); | |
3255 | printk("board_id = %x\n", board_id); | |
7c832835 | 3256 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3257 | |
fb86a35b MM |
3258 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
3259 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
3260 | */ | |
3261 | cciss_interrupt_mode(c, pdev, board_id); | |
1da177e4 | 3262 | |
e1438581 MM |
3263 | /* find the memory BAR */ |
3264 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
3265 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) | |
3266 | break; | |
3267 | } | |
3268 | if (i == DEVICE_COUNT_RESOURCE) { | |
3269 | printk(KERN_WARNING "cciss: No memory BAR found\n"); | |
3270 | err = -ENODEV; | |
3271 | goto err_out_free_res; | |
3272 | } | |
3273 | ||
3274 | c->paddr = pci_resource_start(pdev, i); /* addressing mode bits | |
3275 | * already removed | |
3276 | */ | |
1da177e4 | 3277 | |
1da177e4 | 3278 | #ifdef CCISS_DEBUG |
9f92f471 | 3279 | printk("address 0 = %lx\n", c->paddr); |
7c832835 | 3280 | #endif /* CCISS_DEBUG */ |
a5b92873 | 3281 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
1da177e4 LT |
3282 | |
3283 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
3284 | * We poll for up to 120 secs, once per 100ms. */ | |
7c832835 | 3285 | for (i = 0; i < 1200; i++) { |
1da177e4 LT |
3286 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
3287 | if (scratchpad == CCISS_FIRMWARE_READY) | |
3288 | break; | |
3289 | set_current_state(TASK_INTERRUPTIBLE); | |
7c832835 | 3290 | schedule_timeout(HZ / 10); /* wait 100ms */ |
1da177e4 LT |
3291 | } |
3292 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
3293 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
c33ac89b | 3294 | err = -ENODEV; |
4e570309 | 3295 | goto err_out_free_res; |
1da177e4 LT |
3296 | } |
3297 | ||
3298 | /* get the address index number */ | |
3299 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
3300 | cfg_base_addr &= (__u32) 0x0000ffff; | |
3301 | #ifdef CCISS_DEBUG | |
3302 | printk("cfg base address = %x\n", cfg_base_addr); | |
7c832835 BH |
3303 | #endif /* CCISS_DEBUG */ |
3304 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); | |
1da177e4 | 3305 | #ifdef CCISS_DEBUG |
9f92f471 RD |
3306 | printk("cfg base address index = %llx\n", |
3307 | (unsigned long long)cfg_base_addr_index); | |
7c832835 | 3308 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
3309 | if (cfg_base_addr_index == -1) { |
3310 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
c33ac89b | 3311 | err = -ENODEV; |
4e570309 | 3312 | goto err_out_free_res; |
1da177e4 LT |
3313 | } |
3314 | ||
3315 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
3316 | #ifdef CCISS_DEBUG | |
9f92f471 | 3317 | printk("cfg offset = %llx\n", (unsigned long long)cfg_offset); |
7c832835 BH |
3318 | #endif /* CCISS_DEBUG */ |
3319 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
3320 | cfg_base_addr_index) + | |
3321 | cfg_offset, sizeof(CfgTable_struct)); | |
1da177e4 LT |
3322 | c->board_id = board_id; |
3323 | ||
3324 | #ifdef CCISS_DEBUG | |
945f390f | 3325 | print_cfg_table(c->cfgtable); |
7c832835 | 3326 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3327 | |
49153998 MM |
3328 | /* Some controllers support Zero Memory Raid (ZMR). |
3329 | * When configured in ZMR mode the number of supported | |
3330 | * commands drops to 64. So instead of just setting an | |
3331 | * arbitrary value we make the driver a little smarter. | |
3332 | * We read the config table to tell us how many commands | |
3333 | * are supported on the controller then subtract 4 to | |
3334 | * leave a little room for ioctl calls. | |
3335 | */ | |
3336 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); | |
7c832835 | 3337 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
1da177e4 LT |
3338 | if (board_id == products[i].board_id) { |
3339 | c->product_name = products[i].product_name; | |
3340 | c->access = *(products[i].access); | |
49153998 | 3341 | c->nr_cmds = c->max_commands - 4; |
1da177e4 LT |
3342 | break; |
3343 | } | |
3344 | } | |
7c832835 BH |
3345 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
3346 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
3347 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
3348 | (readb(&c->cfgtable->Signature[3]) != 'S')) { | |
1da177e4 | 3349 | printk("Does not appear to be a valid CISS config table\n"); |
c33ac89b | 3350 | err = -ENODEV; |
4e570309 | 3351 | goto err_out_free_res; |
1da177e4 | 3352 | } |
4ff9a9a4 MM |
3353 | /* We didn't find the controller in our list. We know the |
3354 | * signature is valid. If it's an HP device let's try to | |
3355 | * bind to the device and fire it up. Otherwise we bail. | |
3356 | */ | |
3357 | if (i == ARRAY_SIZE(products)) { | |
3358 | if (subsystem_vendor_id == PCI_VENDOR_ID_HP) { | |
3359 | c->product_name = products[i-1].product_name; | |
3360 | c->access = *(products[i-1].access); | |
49153998 | 3361 | c->nr_cmds = c->max_commands - 4; |
4ff9a9a4 MM |
3362 | printk(KERN_WARNING "cciss: This is an unknown " |
3363 | "Smart Array controller.\n" | |
3364 | "cciss: Please update to the latest driver " | |
3365 | "available from www.hp.com.\n"); | |
3366 | } else { | |
3367 | printk(KERN_WARNING "cciss: Sorry, I don't know how" | |
3368 | " to access the Smart Array controller %08lx\n" | |
3369 | , (unsigned long)board_id); | |
3370 | err = -ENODEV; | |
3371 | goto err_out_free_res; | |
3372 | } | |
3373 | } | |
1da177e4 | 3374 | #ifdef CONFIG_X86 |
7c832835 BH |
3375 | { |
3376 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
3377 | __u32 prefetch; | |
3378 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
3379 | prefetch |= 0x100; | |
3380 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
3381 | } | |
1da177e4 LT |
3382 | #endif |
3383 | ||
8bf50f71 MMOD |
3384 | /* Disabling DMA prefetch and refetch for the P600. |
3385 | * An ASIC bug may result in accesses to invalid memory addresses. | |
3386 | * We've disabled prefetch for some time now. Testing with XEN | |
3387 | * kernels revealed a bug in the refetch if dom0 resides on a P600. | |
f92e2f5f MM |
3388 | */ |
3389 | if(board_id == 0x3225103C) { | |
3390 | __u32 dma_prefetch; | |
8bf50f71 | 3391 | __u32 dma_refetch; |
f92e2f5f MM |
3392 | dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); |
3393 | dma_prefetch |= 0x8000; | |
3394 | writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); | |
8bf50f71 MMOD |
3395 | pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch); |
3396 | dma_refetch |= 0x1; | |
3397 | pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch); | |
f92e2f5f MM |
3398 | } |
3399 | ||
1da177e4 LT |
3400 | #ifdef CCISS_DEBUG |
3401 | printk("Trying to put board into Simple mode\n"); | |
7c832835 | 3402 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3403 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
7c832835 BH |
3404 | /* Update the field, and then ring the doorbell */ |
3405 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); | |
3406 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); | |
1da177e4 LT |
3407 | |
3408 | /* under certain very rare conditions, this can take awhile. | |
3409 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3410 | * as we enter this code.) */ | |
7c832835 | 3411 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
1da177e4 LT |
3412 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
3413 | break; | |
3414 | /* delay and try again */ | |
3415 | set_current_state(TASK_INTERRUPTIBLE); | |
3416 | schedule_timeout(10); | |
7c832835 | 3417 | } |
1da177e4 LT |
3418 | |
3419 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3420 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
3421 | readl(c->vaddr + SA5_DOORBELL)); | |
3422 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3423 | #ifdef CCISS_DEBUG |
7c832835 BH |
3424 | print_cfg_table(c->cfgtable); |
3425 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3426 | |
7c832835 | 3427 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
1da177e4 | 3428 | printk(KERN_WARNING "cciss: unable to get board into" |
7c832835 | 3429 | " simple mode\n"); |
c33ac89b | 3430 | err = -ENODEV; |
4e570309 | 3431 | goto err_out_free_res; |
1da177e4 LT |
3432 | } |
3433 | return 0; | |
3434 | ||
5faad620 | 3435 | err_out_free_res: |
872225ca MM |
3436 | /* |
3437 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3438 | * Smart Array controllers that pci_enable_device does not undo | |
3439 | */ | |
4e570309 | 3440 | pci_release_regions(pdev); |
c33ac89b | 3441 | return err; |
1da177e4 LT |
3442 | } |
3443 | ||
6ae5ce8e MM |
3444 | /* Function to find the first free pointer into our hba[] array |
3445 | * Returns -1 if no free entries are left. | |
7c832835 | 3446 | */ |
1da177e4 LT |
3447 | static int alloc_cciss_hba(void) |
3448 | { | |
799202cb | 3449 | int i; |
1da177e4 | 3450 | |
7c832835 | 3451 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
3452 | if (!hba[i]) { |
3453 | ctlr_info_t *p; | |
f2912a12 | 3454 | |
06ff37ff | 3455 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
3456 | if (!p) |
3457 | goto Enomem; | |
1da177e4 LT |
3458 | hba[i] = p; |
3459 | return i; | |
3460 | } | |
3461 | } | |
3462 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 3463 | " of %d controllers.\n", MAX_CTLR); |
799202cb MM |
3464 | return -1; |
3465 | Enomem: | |
1da177e4 | 3466 | printk(KERN_ERR "cciss: out of memory.\n"); |
1da177e4 LT |
3467 | return -1; |
3468 | } | |
3469 | ||
3470 | static void free_hba(int i) | |
3471 | { | |
3472 | ctlr_info_t *p = hba[i]; | |
3473 | int n; | |
3474 | ||
3475 | hba[i] = NULL; | |
799202cb | 3476 | for (n = 0; n < CISS_MAX_LUN; n++) |
1da177e4 LT |
3477 | put_disk(p->gendisk[n]); |
3478 | kfree(p); | |
3479 | } | |
3480 | ||
82eb03cf CC |
3481 | /* Send a message CDB to the firmware. */ |
3482 | static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) | |
3483 | { | |
3484 | typedef struct { | |
3485 | CommandListHeader_struct CommandHeader; | |
3486 | RequestBlock_struct Request; | |
3487 | ErrDescriptor_struct ErrorDescriptor; | |
3488 | } Command; | |
3489 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); | |
3490 | Command *cmd; | |
3491 | dma_addr_t paddr64; | |
3492 | uint32_t paddr32, tag; | |
3493 | void __iomem *vaddr; | |
3494 | int i, err; | |
3495 | ||
3496 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
3497 | if (vaddr == NULL) | |
3498 | return -ENOMEM; | |
3499 | ||
3500 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the | |
3501 | CCISS commands, so they must be allocated from the lower 4GiB of | |
3502 | memory. */ | |
e930438c | 3503 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
82eb03cf CC |
3504 | if (err) { |
3505 | iounmap(vaddr); | |
3506 | return -ENOMEM; | |
3507 | } | |
3508 | ||
3509 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); | |
3510 | if (cmd == NULL) { | |
3511 | iounmap(vaddr); | |
3512 | return -ENOMEM; | |
3513 | } | |
3514 | ||
3515 | /* This must fit, because of the 32-bit consistent DMA mask. Also, | |
3516 | although there's no guarantee, we assume that the address is at | |
3517 | least 4-byte aligned (most likely, it's page-aligned). */ | |
3518 | paddr32 = paddr64; | |
3519 | ||
3520 | cmd->CommandHeader.ReplyQueue = 0; | |
3521 | cmd->CommandHeader.SGList = 0; | |
3522 | cmd->CommandHeader.SGTotal = 0; | |
3523 | cmd->CommandHeader.Tag.lower = paddr32; | |
3524 | cmd->CommandHeader.Tag.upper = 0; | |
3525 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); | |
3526 | ||
3527 | cmd->Request.CDBLen = 16; | |
3528 | cmd->Request.Type.Type = TYPE_MSG; | |
3529 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; | |
3530 | cmd->Request.Type.Direction = XFER_NONE; | |
3531 | cmd->Request.Timeout = 0; /* Don't time out */ | |
3532 | cmd->Request.CDB[0] = opcode; | |
3533 | cmd->Request.CDB[1] = type; | |
3534 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ | |
3535 | ||
3536 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); | |
3537 | cmd->ErrorDescriptor.Addr.upper = 0; | |
3538 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); | |
3539 | ||
3540 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); | |
3541 | ||
3542 | for (i = 0; i < 10; i++) { | |
3543 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); | |
3544 | if ((tag & ~3) == paddr32) | |
3545 | break; | |
3546 | schedule_timeout_uninterruptible(HZ); | |
3547 | } | |
3548 | ||
3549 | iounmap(vaddr); | |
3550 | ||
3551 | /* we leak the DMA buffer here ... no choice since the controller could | |
3552 | still complete the command. */ | |
3553 | if (i == 10) { | |
3554 | printk(KERN_ERR "cciss: controller message %02x:%02x timed out\n", | |
3555 | opcode, type); | |
3556 | return -ETIMEDOUT; | |
3557 | } | |
3558 | ||
3559 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); | |
3560 | ||
3561 | if (tag & 2) { | |
3562 | printk(KERN_ERR "cciss: controller message %02x:%02x failed\n", | |
3563 | opcode, type); | |
3564 | return -EIO; | |
3565 | } | |
3566 | ||
3567 | printk(KERN_INFO "cciss: controller message %02x:%02x succeeded\n", | |
3568 | opcode, type); | |
3569 | return 0; | |
3570 | } | |
3571 | ||
3572 | #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0) | |
3573 | #define cciss_noop(p) cciss_message(p, 3, 0) | |
3574 | ||
3575 | static __devinit int cciss_reset_msi(struct pci_dev *pdev) | |
3576 | { | |
3577 | /* the #defines are stolen from drivers/pci/msi.h. */ | |
3578 | #define msi_control_reg(base) (base + PCI_MSI_FLAGS) | |
3579 | #define PCI_MSIX_FLAGS_ENABLE (1 << 15) | |
3580 | ||
3581 | int pos; | |
3582 | u16 control = 0; | |
3583 | ||
3584 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); | |
3585 | if (pos) { | |
3586 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
3587 | if (control & PCI_MSI_FLAGS_ENABLE) { | |
3588 | printk(KERN_INFO "cciss: resetting MSI\n"); | |
3589 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE); | |
3590 | } | |
3591 | } | |
3592 | ||
3593 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); | |
3594 | if (pos) { | |
3595 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
3596 | if (control & PCI_MSIX_FLAGS_ENABLE) { | |
3597 | printk(KERN_INFO "cciss: resetting MSI-X\n"); | |
3598 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE); | |
3599 | } | |
3600 | } | |
3601 | ||
3602 | return 0; | |
3603 | } | |
3604 | ||
3605 | /* This does a hard reset of the controller using PCI power management | |
3606 | * states. */ | |
3607 | static __devinit int cciss_hard_reset_controller(struct pci_dev *pdev) | |
3608 | { | |
3609 | u16 pmcsr, saved_config_space[32]; | |
3610 | int i, pos; | |
3611 | ||
3612 | printk(KERN_INFO "cciss: using PCI PM to reset controller\n"); | |
3613 | ||
3614 | /* This is very nearly the same thing as | |
3615 | ||
3616 | pci_save_state(pci_dev); | |
3617 | pci_set_power_state(pci_dev, PCI_D3hot); | |
3618 | pci_set_power_state(pci_dev, PCI_D0); | |
3619 | pci_restore_state(pci_dev); | |
3620 | ||
3621 | but we can't use these nice canned kernel routines on | |
3622 | kexec, because they also check the MSI/MSI-X state in PCI | |
3623 | configuration space and do the wrong thing when it is | |
3624 | set/cleared. Also, the pci_save/restore_state functions | |
3625 | violate the ordering requirements for restoring the | |
3626 | configuration space from the CCISS document (see the | |
3627 | comment below). So we roll our own .... */ | |
3628 | ||
3629 | for (i = 0; i < 32; i++) | |
3630 | pci_read_config_word(pdev, 2*i, &saved_config_space[i]); | |
3631 | ||
3632 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); | |
3633 | if (pos == 0) { | |
3634 | printk(KERN_ERR "cciss_reset_controller: PCI PM not supported\n"); | |
3635 | return -ENODEV; | |
3636 | } | |
3637 | ||
3638 | /* Quoting from the Open CISS Specification: "The Power | |
3639 | * Management Control/Status Register (CSR) controls the power | |
3640 | * state of the device. The normal operating state is D0, | |
3641 | * CSR=00h. The software off state is D3, CSR=03h. To reset | |
3642 | * the controller, place the interface device in D3 then to | |
3643 | * D0, this causes a secondary PCI reset which will reset the | |
3644 | * controller." */ | |
3645 | ||
3646 | /* enter the D3hot power management state */ | |
3647 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); | |
3648 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
3649 | pmcsr |= PCI_D3hot; | |
3650 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
3651 | ||
3652 | schedule_timeout_uninterruptible(HZ >> 1); | |
3653 | ||
3654 | /* enter the D0 power management state */ | |
3655 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
3656 | pmcsr |= PCI_D0; | |
3657 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
3658 | ||
3659 | schedule_timeout_uninterruptible(HZ >> 1); | |
3660 | ||
3661 | /* Restore the PCI configuration space. The Open CISS | |
3662 | * Specification says, "Restore the PCI Configuration | |
3663 | * Registers, offsets 00h through 60h. It is important to | |
3664 | * restore the command register, 16-bits at offset 04h, | |
3665 | * last. Do not restore the configuration status register, | |
3666 | * 16-bits at offset 06h." Note that the offset is 2*i. */ | |
3667 | for (i = 0; i < 32; i++) { | |
3668 | if (i == 2 || i == 3) | |
3669 | continue; | |
3670 | pci_write_config_word(pdev, 2*i, saved_config_space[i]); | |
3671 | } | |
3672 | wmb(); | |
3673 | pci_write_config_word(pdev, 4, saved_config_space[2]); | |
3674 | ||
3675 | return 0; | |
3676 | } | |
3677 | ||
1da177e4 LT |
3678 | /* |
3679 | * This is it. Find all the controllers and register them. I really hate | |
3680 | * stealing all these major device numbers. | |
3681 | * returns the number of block devices registered. | |
3682 | */ | |
3683 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 3684 | const struct pci_device_id *ent) |
1da177e4 | 3685 | { |
1da177e4 | 3686 | int i; |
799202cb | 3687 | int j = 0; |
1da177e4 | 3688 | int rc; |
22bece00 MM |
3689 | int dac, return_code; |
3690 | InquiryData_struct *inq_buff = NULL; | |
1da177e4 | 3691 | |
82eb03cf CC |
3692 | if (reset_devices) { |
3693 | /* Reset the controller with a PCI power-cycle */ | |
3694 | if (cciss_hard_reset_controller(pdev) || cciss_reset_msi(pdev)) | |
3695 | return -ENODEV; | |
3696 | ||
5e18cfd0 JA |
3697 | /* Now try to get the controller to respond to a no-op. Some |
3698 | devices (notably the HP Smart Array 5i Controller) need | |
3699 | up to 30 seconds to respond. */ | |
5e4c91c8 | 3700 | for (i=0; i<30; i++) { |
82eb03cf CC |
3701 | if (cciss_noop(pdev) == 0) |
3702 | break; | |
5e4c91c8 JA |
3703 | |
3704 | schedule_timeout_uninterruptible(HZ); | |
3705 | } | |
3706 | if (i == 30) { | |
3707 | printk(KERN_ERR "cciss: controller seems dead\n"); | |
3708 | return -EBUSY; | |
82eb03cf CC |
3709 | } |
3710 | } | |
3711 | ||
1da177e4 | 3712 | i = alloc_cciss_hba(); |
7c832835 | 3713 | if (i < 0) |
e2019b58 | 3714 | return -1; |
1f8ef380 MM |
3715 | |
3716 | hba[i]->busy_initializing = 1; | |
8a3173de JA |
3717 | INIT_HLIST_HEAD(&hba[i]->cmpQ); |
3718 | INIT_HLIST_HEAD(&hba[i]->reqQ); | |
1f8ef380 | 3719 | |
1da177e4 LT |
3720 | if (cciss_pci_init(hba[i], pdev) != 0) |
3721 | goto clean1; | |
3722 | ||
3723 | sprintf(hba[i]->devname, "cciss%d", i); | |
3724 | hba[i]->ctlr = i; | |
3725 | hba[i]->pdev = pdev; | |
3726 | ||
3727 | /* configure PCI DMA stuff */ | |
6a35528a | 3728 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
40aabb58 | 3729 | dac = 1; |
284901a9 | 3730 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
40aabb58 | 3731 | dac = 0; |
1da177e4 | 3732 | else { |
40aabb58 | 3733 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
3734 | goto clean1; |
3735 | } | |
3736 | ||
3737 | /* | |
3738 | * register with the major number, or get a dynamic major number | |
3739 | * by passing 0 as argument. This is done for greater than | |
3740 | * 8 controller support. | |
3741 | */ | |
3742 | if (i < MAX_CTLR_ORIG) | |
564de74a | 3743 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 3744 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3745 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 3746 | printk(KERN_ERR |
7c832835 BH |
3747 | "cciss: Unable to get major number %d for %s " |
3748 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 3749 | goto clean1; |
7c832835 | 3750 | } else { |
1da177e4 LT |
3751 | if (i >= MAX_CTLR_ORIG) |
3752 | hba[i]->major = rc; | |
3753 | } | |
3754 | ||
3755 | /* make sure the board interrupts are off */ | |
3756 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
7c832835 | 3757 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
69ab3912 | 3758 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
1da177e4 | 3759 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
7c832835 | 3760 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
1da177e4 LT |
3761 | goto clean2; |
3762 | } | |
40aabb58 BH |
3763 | |
3764 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 BH |
3765 | hba[i]->devname, pdev->device, pci_name(pdev), |
3766 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); | |
3767 | ||
3768 | hba[i]->cmd_pool_bits = | |
061837bc JL |
3769 | kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
3770 | * sizeof(unsigned long), GFP_KERNEL); | |
7c832835 BH |
3771 | hba[i]->cmd_pool = (CommandList_struct *) |
3772 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3773 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
3774 | &(hba[i]->cmd_pool_dhandle)); |
3775 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
3776 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3777 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
3778 | &(hba[i]->errinfo_pool_dhandle)); |
3779 | if ((hba[i]->cmd_pool_bits == NULL) | |
3780 | || (hba[i]->cmd_pool == NULL) | |
3781 | || (hba[i]->errinfo_pool == NULL)) { | |
3782 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
3783 | goto clean4; |
3784 | } | |
3da8b713 | 3785 | #ifdef CONFIG_CISS_SCSI_TAPE |
7c832835 BH |
3786 | hba[i]->scsi_rejects.complete = |
3787 | kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) * | |
f880632f | 3788 | (hba[i]->nr_cmds + 5), GFP_KERNEL); |
3da8b713 | 3789 | if (hba[i]->scsi_rejects.complete == NULL) { |
7c832835 | 3790 | printk(KERN_ERR "cciss: out of memory"); |
3da8b713 | 3791 | goto clean4; |
3792 | } | |
3793 | #endif | |
1da177e4 | 3794 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 3795 | |
7c832835 BH |
3796 | /* Initialize the pdev driver private data. |
3797 | have it point to hba[i]. */ | |
1da177e4 | 3798 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
3799 | /* command and error info recs zeroed out before |
3800 | they are used */ | |
3801 | memset(hba[i]->cmd_pool_bits, 0, | |
061837bc JL |
3802 | DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
3803 | * sizeof(unsigned long)); | |
1da177e4 | 3804 | |
6ae5ce8e MM |
3805 | hba[i]->num_luns = 0; |
3806 | hba[i]->highest_lun = -1; | |
3807 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
3808 | hba[i]->drv[j].raid_level = -1; | |
3809 | hba[i]->drv[j].queue = NULL; | |
3810 | hba[i]->gendisk[j] = NULL; | |
3811 | } | |
1da177e4 LT |
3812 | |
3813 | cciss_scsi_setup(i); | |
3814 | ||
3815 | /* Turn the interrupts on so we can service requests */ | |
3816 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
3817 | ||
22bece00 MM |
3818 | /* Get the firmware version */ |
3819 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
3820 | if (inq_buff == NULL) { | |
3821 | printk(KERN_ERR "cciss: out of memory\n"); | |
3822 | goto clean4; | |
3823 | } | |
3824 | ||
3825 | return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff, | |
3826 | sizeof(InquiryData_struct), 0, 0 , 0, TYPE_CMD); | |
3827 | if (return_code == IO_OK) { | |
3828 | hba[i]->firm_ver[0] = inq_buff->data_byte[32]; | |
3829 | hba[i]->firm_ver[1] = inq_buff->data_byte[33]; | |
3830 | hba[i]->firm_ver[2] = inq_buff->data_byte[34]; | |
3831 | hba[i]->firm_ver[3] = inq_buff->data_byte[35]; | |
3832 | } else { /* send command failed */ | |
3833 | printk(KERN_WARNING "cciss: unable to determine firmware" | |
3834 | " version of controller\n"); | |
3835 | } | |
3836 | ||
1da177e4 | 3837 | cciss_procinit(i); |
92c4231a MM |
3838 | |
3839 | hba[i]->cciss_max_sectors = 2048; | |
3840 | ||
d6dbf42e | 3841 | hba[i]->busy_initializing = 0; |
1da177e4 | 3842 | |
6ae5ce8e | 3843 | rebuild_lun_table(hba[i], 1); |
0a9279cc MM |
3844 | hba[i]->cciss_scan_thread = kthread_run(scan_thread, hba[i], |
3845 | "cciss_scan%02d", i); | |
3846 | if (IS_ERR(hba[i]->cciss_scan_thread)) | |
3847 | return PTR_ERR(hba[i]->cciss_scan_thread); | |
3848 | ||
e2019b58 | 3849 | return 1; |
1da177e4 | 3850 | |
6ae5ce8e | 3851 | clean4: |
22bece00 | 3852 | kfree(inq_buff); |
3da8b713 | 3853 | #ifdef CONFIG_CISS_SCSI_TAPE |
1acc0b0b | 3854 | kfree(hba[i]->scsi_rejects.complete); |
3da8b713 | 3855 | #endif |
6044ec88 | 3856 | kfree(hba[i]->cmd_pool_bits); |
7c832835 | 3857 | if (hba[i]->cmd_pool) |
1da177e4 | 3858 | pci_free_consistent(hba[i]->pdev, |
f880632f | 3859 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
3860 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
3861 | if (hba[i]->errinfo_pool) | |
1da177e4 | 3862 | pci_free_consistent(hba[i]->pdev, |
f880632f | 3863 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
3864 | hba[i]->errinfo_pool, |
3865 | hba[i]->errinfo_pool_dhandle); | |
fb86a35b | 3866 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
6ae5ce8e | 3867 | clean2: |
1da177e4 | 3868 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
6ae5ce8e | 3869 | clean1: |
1f8ef380 | 3870 | hba[i]->busy_initializing = 0; |
799202cb MM |
3871 | /* cleanup any queues that may have been initialized */ |
3872 | for (j=0; j <= hba[i]->highest_lun; j++){ | |
3873 | drive_info_struct *drv = &(hba[i]->drv[j]); | |
3874 | if (drv->queue) | |
3875 | blk_cleanup_queue(drv->queue); | |
3876 | } | |
872225ca MM |
3877 | /* |
3878 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3879 | * Smart Array controllers that pci_enable_device does not undo | |
3880 | */ | |
799202cb | 3881 | pci_release_regions(pdev); |
799202cb | 3882 | pci_set_drvdata(pdev, NULL); |
61808c2b | 3883 | free_hba(i); |
e2019b58 | 3884 | return -1; |
1da177e4 LT |
3885 | } |
3886 | ||
e9ca75b5 | 3887 | static void cciss_shutdown(struct pci_dev *pdev) |
1da177e4 LT |
3888 | { |
3889 | ctlr_info_t *tmp_ptr; | |
e9ca75b5 | 3890 | int i; |
1da177e4 | 3891 | char flush_buf[4]; |
7c832835 | 3892 | int return_code; |
1da177e4 | 3893 | |
e9ca75b5 GB |
3894 | tmp_ptr = pci_get_drvdata(pdev); |
3895 | if (tmp_ptr == NULL) | |
3896 | return; | |
3897 | i = tmp_ptr->ctlr; | |
3898 | if (hba[i] == NULL) | |
3899 | return; | |
3900 | ||
3901 | /* Turn board interrupts off and send the flush cache command */ | |
3902 | /* sendcmd will turn off interrupt, and send the flush... | |
3903 | * To write all data in the battery backed cache to disks */ | |
3904 | memset(flush_buf, 0, 4); | |
3905 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL, | |
3906 | TYPE_CMD); | |
3907 | if (return_code == IO_OK) { | |
3908 | printk(KERN_INFO "Completed flushing cache on controller %d\n", i); | |
3909 | } else { | |
3910 | printk(KERN_WARNING "Error flushing cache on controller %d\n", i); | |
3911 | } | |
3912 | free_irq(hba[i]->intr[2], hba[i]); | |
3913 | } | |
3914 | ||
3915 | static void __devexit cciss_remove_one(struct pci_dev *pdev) | |
3916 | { | |
3917 | ctlr_info_t *tmp_ptr; | |
3918 | int i, j; | |
3919 | ||
7c832835 BH |
3920 | if (pci_get_drvdata(pdev) == NULL) { |
3921 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
3922 | return; |
3923 | } | |
0a9279cc | 3924 | |
1da177e4 LT |
3925 | tmp_ptr = pci_get_drvdata(pdev); |
3926 | i = tmp_ptr->ctlr; | |
7c832835 | 3927 | if (hba[i] == NULL) { |
1da177e4 | 3928 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 3929 | "already be removed \n"); |
1da177e4 LT |
3930 | return; |
3931 | } | |
b6550777 | 3932 | |
0a9279cc MM |
3933 | kthread_stop(hba[i]->cciss_scan_thread); |
3934 | ||
b6550777 BH |
3935 | remove_proc_entry(hba[i]->devname, proc_cciss); |
3936 | unregister_blkdev(hba[i]->major, hba[i]->devname); | |
3937 | ||
3938 | /* remove it from the disk list */ | |
3939 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
3940 | struct gendisk *disk = hba[i]->gendisk[j]; | |
3941 | if (disk) { | |
165125e1 | 3942 | struct request_queue *q = disk->queue; |
b6550777 BH |
3943 | |
3944 | if (disk->flags & GENHD_FL_UP) | |
3945 | del_gendisk(disk); | |
3946 | if (q) | |
3947 | blk_cleanup_queue(q); | |
3948 | } | |
3949 | } | |
3950 | ||
ba198efb | 3951 | #ifdef CONFIG_CISS_SCSI_TAPE |
b6550777 | 3952 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
ba198efb | 3953 | #endif |
b6550777 | 3954 | |
e9ca75b5 | 3955 | cciss_shutdown(pdev); |
fb86a35b MM |
3956 | |
3957 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3958 | if (hba[i]->msix_vector) |
3959 | pci_disable_msix(hba[i]->pdev); | |
3960 | else if (hba[i]->msi_vector) | |
3961 | pci_disable_msi(hba[i]->pdev); | |
3962 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 3963 | |
1da177e4 | 3964 | iounmap(hba[i]->vaddr); |
1da177e4 | 3965 | |
f880632f | 3966 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
1da177e4 | 3967 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
f880632f | 3968 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 | 3969 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
1da177e4 | 3970 | kfree(hba[i]->cmd_pool_bits); |
3da8b713 | 3971 | #ifdef CONFIG_CISS_SCSI_TAPE |
3972 | kfree(hba[i]->scsi_rejects.complete); | |
3973 | #endif | |
872225ca MM |
3974 | /* |
3975 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3976 | * Smart Array controllers that pci_enable_device does not undo | |
3977 | */ | |
7c832835 | 3978 | pci_release_regions(pdev); |
4e570309 | 3979 | pci_set_drvdata(pdev, NULL); |
1da177e4 | 3980 | free_hba(i); |
7c832835 | 3981 | } |
1da177e4 LT |
3982 | |
3983 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
3984 | .name = "cciss", |
3985 | .probe = cciss_init_one, | |
3986 | .remove = __devexit_p(cciss_remove_one), | |
3987 | .id_table = cciss_pci_device_id, /* id_table */ | |
e9ca75b5 | 3988 | .shutdown = cciss_shutdown, |
1da177e4 LT |
3989 | }; |
3990 | ||
3991 | /* | |
3992 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 3993 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
3994 | */ |
3995 | static int __init cciss_init(void) | |
3996 | { | |
10cbda97 JA |
3997 | /* |
3998 | * The hardware requires that commands are aligned on a 64-bit | |
3999 | * boundary. Given that we use pci_alloc_consistent() to allocate an | |
4000 | * array of them, the size must be a multiple of 8 bytes. | |
4001 | */ | |
4002 | BUILD_BUG_ON(sizeof(CommandList_struct) % 8); | |
4003 | ||
1da177e4 LT |
4004 | printk(KERN_INFO DRIVER_NAME "\n"); |
4005 | ||
4006 | /* Register for our PCI devices */ | |
9bfab8ce | 4007 | return pci_register_driver(&cciss_pci_driver); |
1da177e4 LT |
4008 | } |
4009 | ||
4010 | static void __exit cciss_cleanup(void) | |
4011 | { | |
4012 | int i; | |
4013 | ||
4014 | pci_unregister_driver(&cciss_pci_driver); | |
4015 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
4016 | for (i = 0; i < MAX_CTLR; i++) { |
4017 | if (hba[i] != NULL) { | |
1da177e4 | 4018 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 4019 | " controller %d\n", i); |
1da177e4 LT |
4020 | cciss_remove_one(hba[i]->pdev); |
4021 | } | |
4022 | } | |
928b4d8c | 4023 | remove_proc_entry("driver/cciss", NULL); |
1da177e4 LT |
4024 | } |
4025 | ||
33079b21 MM |
4026 | static void fail_all_cmds(unsigned long ctlr) |
4027 | { | |
4028 | /* If we get here, the board is apparently dead. */ | |
4029 | ctlr_info_t *h = hba[ctlr]; | |
4030 | CommandList_struct *c; | |
4031 | unsigned long flags; | |
4032 | ||
4033 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); | |
7c832835 | 4034 | h->alive = 0; /* the controller apparently died... */ |
33079b21 MM |
4035 | |
4036 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
4037 | ||
7c832835 | 4038 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
33079b21 MM |
4039 | |
4040 | /* move everything off the request queue onto the completed queue */ | |
8a3173de JA |
4041 | while (!hlist_empty(&h->reqQ)) { |
4042 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); | |
4043 | removeQ(c); | |
33079b21 | 4044 | h->Qdepth--; |
8a3173de | 4045 | addQ(&h->cmpQ, c); |
33079b21 MM |
4046 | } |
4047 | ||
4048 | /* Now, fail everything on the completed queue with a HW error */ | |
8a3173de JA |
4049 | while (!hlist_empty(&h->cmpQ)) { |
4050 | c = hlist_entry(h->cmpQ.first, CommandList_struct, list); | |
4051 | removeQ(c); | |
33079b21 MM |
4052 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; |
4053 | if (c->cmd_type == CMD_RWREQ) { | |
4054 | complete_command(h, c, 0); | |
4055 | } else if (c->cmd_type == CMD_IOCTL_PEND) | |
4056 | complete(c->waiting); | |
4057 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
4058 | else if (c->cmd_type == CMD_SCSI) |
4059 | complete_scsi_command(c, 0, 0); | |
33079b21 MM |
4060 | #endif |
4061 | } | |
4062 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
4063 | return; | |
4064 | } | |
4065 | ||
1da177e4 LT |
4066 | module_init(cciss_init); |
4067 | module_exit(cciss_cleanup); |