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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> | |
405f5571 | 29 | #include <linux/smp_lock.h> |
1da177e4 LT |
30 | #include <linux/delay.h> |
31 | #include <linux/major.h> | |
32 | #include <linux/fs.h> | |
33 | #include <linux/bio.h> | |
34 | #include <linux/blkpg.h> | |
35 | #include <linux/timer.h> | |
36 | #include <linux/proc_fs.h> | |
89b6e743 | 37 | #include <linux/seq_file.h> |
7c832835 | 38 | #include <linux/init.h> |
4d761609 | 39 | #include <linux/jiffies.h> |
1da177e4 LT |
40 | #include <linux/hdreg.h> |
41 | #include <linux/spinlock.h> | |
42 | #include <linux/compat.h> | |
b368c9dd | 43 | #include <linux/mutex.h> |
1da177e4 LT |
44 | #include <asm/uaccess.h> |
45 | #include <asm/io.h> | |
46 | ||
eb0df996 | 47 | #include <linux/dma-mapping.h> |
1da177e4 LT |
48 | #include <linux/blkdev.h> |
49 | #include <linux/genhd.h> | |
50 | #include <linux/completion.h> | |
d5d3b736 | 51 | #include <scsi/scsi.h> |
03bbfee5 MMOD |
52 | #include <scsi/sg.h> |
53 | #include <scsi/scsi_ioctl.h> | |
54 | #include <linux/cdrom.h> | |
231bc2a2 | 55 | #include <linux/scatterlist.h> |
0a9279cc | 56 | #include <linux/kthread.h> |
1da177e4 LT |
57 | |
58 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) | |
24aac480 MM |
59 | #define DRIVER_NAME "HP CISS Driver (v 3.6.20)" |
60 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 20) | |
1da177e4 LT |
61 | |
62 | /* Embedded module documentation macros - see modules.h */ | |
63 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
24aac480 | 64 | MODULE_DESCRIPTION("Driver for HP Smart Array Controllers"); |
1da177e4 | 65 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
24aac480 MM |
66 | " SA6i P600 P800 P400 P400i E200 E200i E500 P700m" |
67 | " Smart Array G2 Series SAS/SATA Controllers"); | |
68 | MODULE_VERSION("3.6.20"); | |
1da177e4 LT |
69 | MODULE_LICENSE("GPL"); |
70 | ||
2ec24ff1 SC |
71 | static int cciss_allow_hpsa; |
72 | module_param(cciss_allow_hpsa, int, S_IRUGO|S_IWUSR); | |
73 | MODULE_PARM_DESC(cciss_allow_hpsa, | |
74 | "Prevent cciss driver from accessing hardware known to be " | |
75 | " supported by the hpsa driver"); | |
76 | ||
1da177e4 LT |
77 | #include "cciss_cmd.h" |
78 | #include "cciss.h" | |
79 | #include <linux/cciss_ioctl.h> | |
80 | ||
81 | /* define the PCI info for the cards we can control */ | |
82 | static const struct pci_device_id cciss_pci_device_id[] = { | |
f82ccdb9 BH |
83 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
84 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, | |
85 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, | |
86 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, | |
87 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, | |
88 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, | |
89 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, | |
90 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, | |
91 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, | |
92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, | |
93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, | |
94 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, | |
95 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, | |
96 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, | |
97 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, | |
98 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, | |
99 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, | |
100 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, | |
de923916 | 101 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, |
9cff3b38 | 102 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
24aac480 MM |
103 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, |
104 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, | |
105 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, | |
106 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, | |
107 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, | |
77ca7286 MM |
108 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A}, |
109 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B}, | |
1da177e4 LT |
110 | {0,} |
111 | }; | |
7c832835 | 112 | |
1da177e4 LT |
113 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
114 | ||
1da177e4 LT |
115 | /* board_id = Subsystem Device ID & Vendor ID |
116 | * product = Marketing Name for the board | |
7c832835 | 117 | * access = Address of the struct of function pointers |
1da177e4 LT |
118 | */ |
119 | static struct board_type products[] = { | |
49153998 MM |
120 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
121 | {0x40800E11, "Smart Array 5i", &SA5B_access}, | |
122 | {0x40820E11, "Smart Array 532", &SA5B_access}, | |
123 | {0x40830E11, "Smart Array 5312", &SA5B_access}, | |
124 | {0x409A0E11, "Smart Array 641", &SA5_access}, | |
125 | {0x409B0E11, "Smart Array 642", &SA5_access}, | |
126 | {0x409C0E11, "Smart Array 6400", &SA5_access}, | |
127 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, | |
128 | {0x40910E11, "Smart Array 6i", &SA5_access}, | |
129 | {0x3225103C, "Smart Array P600", &SA5_access}, | |
49153998 MM |
130 | {0x3235103C, "Smart Array P400i", &SA5_access}, |
131 | {0x3211103C, "Smart Array E200i", &SA5_access}, | |
132 | {0x3212103C, "Smart Array E200", &SA5_access}, | |
133 | {0x3213103C, "Smart Array E200i", &SA5_access}, | |
134 | {0x3214103C, "Smart Array E200i", &SA5_access}, | |
135 | {0x3215103C, "Smart Array E200i", &SA5_access}, | |
136 | {0x3237103C, "Smart Array E500", &SA5_access}, | |
2ec24ff1 SC |
137 | /* controllers below this line are also supported by the hpsa driver. */ |
138 | #define HPSA_BOUNDARY 0x3223103C | |
139 | {0x3223103C, "Smart Array P800", &SA5_access}, | |
140 | {0x3234103C, "Smart Array P400", &SA5_access}, | |
49153998 MM |
141 | {0x323D103C, "Smart Array P700m", &SA5_access}, |
142 | {0x3241103C, "Smart Array P212", &SA5_access}, | |
143 | {0x3243103C, "Smart Array P410", &SA5_access}, | |
144 | {0x3245103C, "Smart Array P410i", &SA5_access}, | |
145 | {0x3247103C, "Smart Array P411", &SA5_access}, | |
146 | {0x3249103C, "Smart Array P812", &SA5_access}, | |
77ca7286 MM |
147 | {0x324A103C, "Smart Array P712m", &SA5_access}, |
148 | {0x324B103C, "Smart Array P711m", &SA5_access}, | |
1da177e4 LT |
149 | }; |
150 | ||
d14c4ab5 | 151 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
7c832835 | 152 | #define MAX_CONFIG_WAIT 30000 |
1da177e4 LT |
153 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
154 | ||
155 | /*define how many times we will try a command because of bus resets */ | |
156 | #define MAX_CMD_RETRIES 3 | |
157 | ||
1da177e4 LT |
158 | #define MAX_CTLR 32 |
159 | ||
160 | /* Originally cciss driver only supports 8 major numbers */ | |
161 | #define MAX_CTLR_ORIG 8 | |
162 | ||
1da177e4 LT |
163 | static ctlr_info_t *hba[MAX_CTLR]; |
164 | ||
b368c9dd AP |
165 | static struct task_struct *cciss_scan_thread; |
166 | static DEFINE_MUTEX(scan_mutex); | |
167 | static LIST_HEAD(scan_q); | |
168 | ||
165125e1 | 169 | static void do_cciss_request(struct request_queue *q); |
7d12e780 | 170 | static irqreturn_t do_cciss_intr(int irq, void *dev_id); |
ef7822c2 AV |
171 | static int cciss_open(struct block_device *bdev, fmode_t mode); |
172 | static int cciss_release(struct gendisk *disk, fmode_t mode); | |
173 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, | |
7c832835 | 174 | unsigned int cmd, unsigned long arg); |
a885c8c4 | 175 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 | 176 | |
1da177e4 | 177 | static int cciss_revalidate(struct gendisk *disk); |
2d11d993 | 178 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, int via_ioctl); |
a0ea8622 | 179 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
2d11d993 | 180 | int clear_all, int via_ioctl); |
1da177e4 | 181 | |
00988a35 MMOD |
182 | static void cciss_read_capacity(int ctlr, int logvol, int withirq, |
183 | sector_t *total_size, unsigned int *block_size); | |
184 | static void cciss_read_capacity_16(int ctlr, int logvol, int withirq, | |
185 | sector_t *total_size, unsigned int *block_size); | |
186 | static void cciss_geometry_inquiry(int ctlr, int logvol, | |
187 | int withirq, sector_t total_size, | |
188 | unsigned int block_size, InquiryData_struct *inq_buff, | |
7c832835 | 189 | drive_info_struct *drv); |
7c832835 BH |
190 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
191 | __u32); | |
192 | static void start_io(ctlr_info_t *h); | |
193 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, | |
7c832835 BH |
194 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); |
195 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, | |
b57695fe | 196 | __u8 page_code, unsigned char scsi3addr[], |
197 | int cmd_type); | |
85cc61ae | 198 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
199 | int attempt_retry); | |
200 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c); | |
1da177e4 | 201 | |
33079b21 | 202 | static void fail_all_cmds(unsigned long ctlr); |
d6f4965d | 203 | static int add_to_scan_list(struct ctlr_info *h); |
0a9279cc MM |
204 | static int scan_thread(void *data); |
205 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c); | |
617e1344 SC |
206 | static void cciss_hba_release(struct device *dev); |
207 | static void cciss_device_release(struct device *dev); | |
361e9b07 | 208 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index); |
9cef0d2f | 209 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index); |
33079b21 | 210 | |
1da177e4 | 211 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
212 | static void cciss_procinit(int i); |
213 | #else | |
7c832835 BH |
214 | static void cciss_procinit(int i) |
215 | { | |
216 | } | |
217 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
218 | |
219 | #ifdef CONFIG_COMPAT | |
ef7822c2 AV |
220 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
221 | unsigned, unsigned long); | |
1da177e4 LT |
222 | #endif |
223 | ||
83d5cde4 | 224 | static const struct block_device_operations cciss_fops = { |
7c832835 | 225 | .owner = THIS_MODULE, |
ef7822c2 AV |
226 | .open = cciss_open, |
227 | .release = cciss_release, | |
228 | .locked_ioctl = cciss_ioctl, | |
7c832835 | 229 | .getgeo = cciss_getgeo, |
1da177e4 | 230 | #ifdef CONFIG_COMPAT |
ef7822c2 | 231 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 232 | #endif |
7c832835 | 233 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
234 | }; |
235 | ||
236 | /* | |
237 | * Enqueuing and dequeuing functions for cmdlists. | |
238 | */ | |
8a3173de | 239 | static inline void addQ(struct hlist_head *list, CommandList_struct *c) |
1da177e4 | 240 | { |
8a3173de | 241 | hlist_add_head(&c->list, list); |
1da177e4 LT |
242 | } |
243 | ||
8a3173de | 244 | static inline void removeQ(CommandList_struct *c) |
1da177e4 | 245 | { |
b59e64d0 HR |
246 | /* |
247 | * After kexec/dump some commands might still | |
248 | * be in flight, which the firmware will try | |
249 | * to complete. Resetting the firmware doesn't work | |
250 | * with old fw revisions, so we have to mark | |
251 | * them off as 'stale' to prevent the driver from | |
252 | * falling over. | |
253 | */ | |
254 | if (WARN_ON(hlist_unhashed(&c->list))) { | |
255 | c->cmd_type = CMD_MSG_STALE; | |
8a3173de | 256 | return; |
b59e64d0 | 257 | } |
8a3173de JA |
258 | |
259 | hlist_del_init(&c->list); | |
1da177e4 LT |
260 | } |
261 | ||
262 | #include "cciss_scsi.c" /* For SCSI tape support */ | |
263 | ||
1e6f2dc1 AB |
264 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
265 | "UNKNOWN" | |
266 | }; | |
267 | #define RAID_UNKNOWN (sizeof(raid_label) / sizeof(raid_label[0])-1) | |
0f5486ec | 268 | |
1da177e4 LT |
269 | #ifdef CONFIG_PROC_FS |
270 | ||
271 | /* | |
272 | * Report information about this controller. | |
273 | */ | |
274 | #define ENG_GIG 1000000000 | |
275 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
89b6e743 | 276 | #define ENGAGE_SCSI "engage scsi" |
1da177e4 LT |
277 | |
278 | static struct proc_dir_entry *proc_cciss; | |
279 | ||
89b6e743 | 280 | static void cciss_seq_show_header(struct seq_file *seq) |
1da177e4 | 281 | { |
89b6e743 MM |
282 | ctlr_info_t *h = seq->private; |
283 | ||
284 | seq_printf(seq, "%s: HP %s Controller\n" | |
285 | "Board ID: 0x%08lx\n" | |
286 | "Firmware Version: %c%c%c%c\n" | |
287 | "IRQ: %d\n" | |
288 | "Logical drives: %d\n" | |
289 | "Current Q depth: %d\n" | |
290 | "Current # commands on controller: %d\n" | |
291 | "Max Q depth since init: %d\n" | |
292 | "Max # commands on controller since init: %d\n" | |
293 | "Max SG entries since init: %d\n", | |
294 | h->devname, | |
295 | h->product_name, | |
296 | (unsigned long)h->board_id, | |
297 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
298 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], | |
299 | h->num_luns, | |
300 | h->Qdepth, h->commands_outstanding, | |
301 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
302 | ||
303 | #ifdef CONFIG_CISS_SCSI_TAPE | |
304 | cciss_seq_tape_report(seq, h->ctlr); | |
305 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
306 | } | |
1da177e4 | 307 | |
89b6e743 MM |
308 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
309 | { | |
310 | ctlr_info_t *h = seq->private; | |
311 | unsigned ctlr = h->ctlr; | |
312 | unsigned long flags; | |
1da177e4 LT |
313 | |
314 | /* prevent displaying bogus info during configuration | |
315 | * or deconfiguration of a logical volume | |
316 | */ | |
317 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
318 | if (h->busy_configuring) { | |
319 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
89b6e743 | 320 | return ERR_PTR(-EBUSY); |
1da177e4 LT |
321 | } |
322 | h->busy_configuring = 1; | |
323 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
324 | ||
89b6e743 MM |
325 | if (*pos == 0) |
326 | cciss_seq_show_header(seq); | |
327 | ||
328 | return pos; | |
329 | } | |
330 | ||
331 | static int cciss_seq_show(struct seq_file *seq, void *v) | |
332 | { | |
333 | sector_t vol_sz, vol_sz_frac; | |
334 | ctlr_info_t *h = seq->private; | |
335 | unsigned ctlr = h->ctlr; | |
336 | loff_t *pos = v; | |
9cef0d2f | 337 | drive_info_struct *drv = h->drv[*pos]; |
89b6e743 MM |
338 | |
339 | if (*pos > h->highest_lun) | |
340 | return 0; | |
341 | ||
342 | if (drv->heads == 0) | |
343 | return 0; | |
344 | ||
345 | vol_sz = drv->nr_blocks; | |
346 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
347 | vol_sz_frac *= 100; | |
348 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
349 | ||
fa52bec9 | 350 | if (drv->raid_level < 0 || drv->raid_level > RAID_UNKNOWN) |
89b6e743 MM |
351 | drv->raid_level = RAID_UNKNOWN; |
352 | seq_printf(seq, "cciss/c%dd%d:" | |
353 | "\t%4u.%02uGB\tRAID %s\n", | |
354 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, | |
355 | raid_label[drv->raid_level]); | |
356 | return 0; | |
357 | } | |
358 | ||
359 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
360 | { | |
361 | ctlr_info_t *h = seq->private; | |
362 | ||
363 | if (*pos > h->highest_lun) | |
364 | return NULL; | |
365 | *pos += 1; | |
366 | ||
367 | return pos; | |
368 | } | |
369 | ||
370 | static void cciss_seq_stop(struct seq_file *seq, void *v) | |
371 | { | |
372 | ctlr_info_t *h = seq->private; | |
373 | ||
374 | /* Only reset h->busy_configuring if we succeeded in setting | |
375 | * it during cciss_seq_start. */ | |
376 | if (v == ERR_PTR(-EBUSY)) | |
377 | return; | |
7c832835 | 378 | |
1da177e4 | 379 | h->busy_configuring = 0; |
1da177e4 LT |
380 | } |
381 | ||
88e9d34c | 382 | static const struct seq_operations cciss_seq_ops = { |
89b6e743 MM |
383 | .start = cciss_seq_start, |
384 | .show = cciss_seq_show, | |
385 | .next = cciss_seq_next, | |
386 | .stop = cciss_seq_stop, | |
387 | }; | |
388 | ||
389 | static int cciss_seq_open(struct inode *inode, struct file *file) | |
390 | { | |
391 | int ret = seq_open(file, &cciss_seq_ops); | |
392 | struct seq_file *seq = file->private_data; | |
393 | ||
394 | if (!ret) | |
395 | seq->private = PDE(inode)->data; | |
396 | ||
397 | return ret; | |
398 | } | |
399 | ||
400 | static ssize_t | |
401 | cciss_proc_write(struct file *file, const char __user *buf, | |
402 | size_t length, loff_t *ppos) | |
1da177e4 | 403 | { |
89b6e743 MM |
404 | int err; |
405 | char *buffer; | |
406 | ||
407 | #ifndef CONFIG_CISS_SCSI_TAPE | |
408 | return -EINVAL; | |
1da177e4 LT |
409 | #endif |
410 | ||
89b6e743 | 411 | if (!buf || length > PAGE_SIZE - 1) |
7c832835 | 412 | return -EINVAL; |
89b6e743 MM |
413 | |
414 | buffer = (char *)__get_free_page(GFP_KERNEL); | |
415 | if (!buffer) | |
416 | return -ENOMEM; | |
417 | ||
418 | err = -EFAULT; | |
419 | if (copy_from_user(buffer, buf, length)) | |
420 | goto out; | |
421 | buffer[length] = '\0'; | |
422 | ||
423 | #ifdef CONFIG_CISS_SCSI_TAPE | |
424 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { | |
425 | struct seq_file *seq = file->private_data; | |
426 | ctlr_info_t *h = seq->private; | |
427 | int rc; | |
428 | ||
7c832835 BH |
429 | rc = cciss_engage_scsi(h->ctlr); |
430 | if (rc != 0) | |
89b6e743 MM |
431 | err = -rc; |
432 | else | |
433 | err = length; | |
434 | } else | |
435 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
436 | err = -EINVAL; | |
7c832835 BH |
437 | /* might be nice to have "disengage" too, but it's not |
438 | safely possible. (only 1 module use count, lock issues.) */ | |
89b6e743 MM |
439 | |
440 | out: | |
441 | free_page((unsigned long)buffer); | |
442 | return err; | |
1da177e4 LT |
443 | } |
444 | ||
828c0950 | 445 | static const struct file_operations cciss_proc_fops = { |
89b6e743 MM |
446 | .owner = THIS_MODULE, |
447 | .open = cciss_seq_open, | |
448 | .read = seq_read, | |
449 | .llseek = seq_lseek, | |
450 | .release = seq_release, | |
451 | .write = cciss_proc_write, | |
452 | }; | |
453 | ||
1da177e4 LT |
454 | static void __devinit cciss_procinit(int i) |
455 | { | |
456 | struct proc_dir_entry *pde; | |
457 | ||
89b6e743 | 458 | if (proc_cciss == NULL) |
928b4d8c | 459 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
89b6e743 MM |
460 | if (!proc_cciss) |
461 | return; | |
3dfcf9c4 | 462 | pde = proc_create_data(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
89b6e743 | 463 | S_IROTH, proc_cciss, |
3dfcf9c4 | 464 | &cciss_proc_fops, hba[i]); |
1da177e4 | 465 | } |
7c832835 | 466 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 467 | |
7fe06326 AP |
468 | #define MAX_PRODUCT_NAME_LEN 19 |
469 | ||
470 | #define to_hba(n) container_of(n, struct ctlr_info, dev) | |
471 | #define to_drv(n) container_of(n, drive_info_struct, dev) | |
472 | ||
d6f4965d AP |
473 | static ssize_t host_store_rescan(struct device *dev, |
474 | struct device_attribute *attr, | |
475 | const char *buf, size_t count) | |
476 | { | |
477 | struct ctlr_info *h = to_hba(dev); | |
478 | ||
479 | add_to_scan_list(h); | |
480 | wake_up_process(cciss_scan_thread); | |
481 | wait_for_completion_interruptible(&h->scan_wait); | |
482 | ||
483 | return count; | |
484 | } | |
485 | DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); | |
7fe06326 AP |
486 | |
487 | static ssize_t dev_show_unique_id(struct device *dev, | |
488 | struct device_attribute *attr, | |
489 | char *buf) | |
490 | { | |
491 | drive_info_struct *drv = to_drv(dev); | |
492 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
493 | __u8 sn[16]; | |
494 | unsigned long flags; | |
495 | int ret = 0; | |
496 | ||
497 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
498 | if (h->busy_configuring) | |
499 | ret = -EBUSY; | |
500 | else | |
501 | memcpy(sn, drv->serial_no, sizeof(sn)); | |
502 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
503 | ||
504 | if (ret) | |
505 | return ret; | |
506 | else | |
507 | return snprintf(buf, 16 * 2 + 2, | |
508 | "%02X%02X%02X%02X%02X%02X%02X%02X" | |
509 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", | |
510 | sn[0], sn[1], sn[2], sn[3], | |
511 | sn[4], sn[5], sn[6], sn[7], | |
512 | sn[8], sn[9], sn[10], sn[11], | |
513 | sn[12], sn[13], sn[14], sn[15]); | |
514 | } | |
515 | DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); | |
516 | ||
517 | static ssize_t dev_show_vendor(struct device *dev, | |
518 | struct device_attribute *attr, | |
519 | char *buf) | |
520 | { | |
521 | drive_info_struct *drv = to_drv(dev); | |
522 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
523 | char vendor[VENDOR_LEN + 1]; | |
524 | unsigned long flags; | |
525 | int ret = 0; | |
526 | ||
527 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
528 | if (h->busy_configuring) | |
529 | ret = -EBUSY; | |
530 | else | |
531 | memcpy(vendor, drv->vendor, VENDOR_LEN + 1); | |
532 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
533 | ||
534 | if (ret) | |
535 | return ret; | |
536 | else | |
537 | return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); | |
538 | } | |
539 | DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); | |
540 | ||
541 | static ssize_t dev_show_model(struct device *dev, | |
542 | struct device_attribute *attr, | |
543 | char *buf) | |
544 | { | |
545 | drive_info_struct *drv = to_drv(dev); | |
546 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
547 | char model[MODEL_LEN + 1]; | |
548 | unsigned long flags; | |
549 | int ret = 0; | |
550 | ||
551 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
552 | if (h->busy_configuring) | |
553 | ret = -EBUSY; | |
554 | else | |
555 | memcpy(model, drv->model, MODEL_LEN + 1); | |
556 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
557 | ||
558 | if (ret) | |
559 | return ret; | |
560 | else | |
561 | return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); | |
562 | } | |
563 | DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); | |
564 | ||
565 | static ssize_t dev_show_rev(struct device *dev, | |
566 | struct device_attribute *attr, | |
567 | char *buf) | |
568 | { | |
569 | drive_info_struct *drv = to_drv(dev); | |
570 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
571 | char rev[REV_LEN + 1]; | |
572 | unsigned long flags; | |
573 | int ret = 0; | |
574 | ||
575 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
576 | if (h->busy_configuring) | |
577 | ret = -EBUSY; | |
578 | else | |
579 | memcpy(rev, drv->rev, REV_LEN + 1); | |
580 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
581 | ||
582 | if (ret) | |
583 | return ret; | |
584 | else | |
585 | return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); | |
586 | } | |
587 | DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); | |
588 | ||
ce84a8ae SC |
589 | static ssize_t cciss_show_lunid(struct device *dev, |
590 | struct device_attribute *attr, char *buf) | |
591 | { | |
9cef0d2f SC |
592 | drive_info_struct *drv = to_drv(dev); |
593 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
ce84a8ae SC |
594 | unsigned long flags; |
595 | unsigned char lunid[8]; | |
596 | ||
597 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
598 | if (h->busy_configuring) { | |
599 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
600 | return -EBUSY; | |
601 | } | |
602 | if (!drv->heads) { | |
603 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
604 | return -ENOTTY; | |
605 | } | |
606 | memcpy(lunid, drv->LunID, sizeof(lunid)); | |
607 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
608 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
609 | lunid[0], lunid[1], lunid[2], lunid[3], | |
610 | lunid[4], lunid[5], lunid[6], lunid[7]); | |
611 | } | |
612 | DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL); | |
613 | ||
3ff1111d SC |
614 | static ssize_t cciss_show_raid_level(struct device *dev, |
615 | struct device_attribute *attr, char *buf) | |
616 | { | |
9cef0d2f SC |
617 | drive_info_struct *drv = to_drv(dev); |
618 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
3ff1111d SC |
619 | int raid; |
620 | unsigned long flags; | |
621 | ||
622 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
623 | if (h->busy_configuring) { | |
624 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
625 | return -EBUSY; | |
626 | } | |
627 | raid = drv->raid_level; | |
628 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
629 | if (raid < 0 || raid > RAID_UNKNOWN) | |
630 | raid = RAID_UNKNOWN; | |
631 | ||
632 | return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n", | |
633 | raid_label[raid]); | |
634 | } | |
635 | DEVICE_ATTR(raid_level, S_IRUGO, cciss_show_raid_level, NULL); | |
636 | ||
e272afec SC |
637 | static ssize_t cciss_show_usage_count(struct device *dev, |
638 | struct device_attribute *attr, char *buf) | |
639 | { | |
9cef0d2f SC |
640 | drive_info_struct *drv = to_drv(dev); |
641 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
e272afec SC |
642 | unsigned long flags; |
643 | int count; | |
644 | ||
645 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
646 | if (h->busy_configuring) { | |
647 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
648 | return -EBUSY; | |
649 | } | |
650 | count = drv->usage_count; | |
651 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
652 | return snprintf(buf, 20, "%d\n", count); | |
653 | } | |
654 | DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL); | |
655 | ||
d6f4965d AP |
656 | static struct attribute *cciss_host_attrs[] = { |
657 | &dev_attr_rescan.attr, | |
658 | NULL | |
659 | }; | |
660 | ||
661 | static struct attribute_group cciss_host_attr_group = { | |
662 | .attrs = cciss_host_attrs, | |
663 | }; | |
664 | ||
9f792d9f | 665 | static const struct attribute_group *cciss_host_attr_groups[] = { |
d6f4965d AP |
666 | &cciss_host_attr_group, |
667 | NULL | |
668 | }; | |
669 | ||
670 | static struct device_type cciss_host_type = { | |
671 | .name = "cciss_host", | |
672 | .groups = cciss_host_attr_groups, | |
617e1344 | 673 | .release = cciss_hba_release, |
d6f4965d AP |
674 | }; |
675 | ||
7fe06326 AP |
676 | static struct attribute *cciss_dev_attrs[] = { |
677 | &dev_attr_unique_id.attr, | |
678 | &dev_attr_model.attr, | |
679 | &dev_attr_vendor.attr, | |
680 | &dev_attr_rev.attr, | |
ce84a8ae | 681 | &dev_attr_lunid.attr, |
3ff1111d | 682 | &dev_attr_raid_level.attr, |
e272afec | 683 | &dev_attr_usage_count.attr, |
7fe06326 AP |
684 | NULL |
685 | }; | |
686 | ||
687 | static struct attribute_group cciss_dev_attr_group = { | |
688 | .attrs = cciss_dev_attrs, | |
689 | }; | |
690 | ||
a4dbd674 | 691 | static const struct attribute_group *cciss_dev_attr_groups[] = { |
7fe06326 AP |
692 | &cciss_dev_attr_group, |
693 | NULL | |
694 | }; | |
695 | ||
696 | static struct device_type cciss_dev_type = { | |
697 | .name = "cciss_device", | |
698 | .groups = cciss_dev_attr_groups, | |
617e1344 | 699 | .release = cciss_device_release, |
7fe06326 AP |
700 | }; |
701 | ||
702 | static struct bus_type cciss_bus_type = { | |
703 | .name = "cciss", | |
704 | }; | |
705 | ||
617e1344 SC |
706 | /* |
707 | * cciss_hba_release is called when the reference count | |
708 | * of h->dev goes to zero. | |
709 | */ | |
710 | static void cciss_hba_release(struct device *dev) | |
711 | { | |
712 | /* | |
713 | * nothing to do, but need this to avoid a warning | |
714 | * about not having a release handler from lib/kref.c. | |
715 | */ | |
716 | } | |
7fe06326 AP |
717 | |
718 | /* | |
719 | * Initialize sysfs entry for each controller. This sets up and registers | |
720 | * the 'cciss#' directory for each individual controller under | |
721 | * /sys/bus/pci/devices/<dev>/. | |
722 | */ | |
723 | static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) | |
724 | { | |
725 | device_initialize(&h->dev); | |
726 | h->dev.type = &cciss_host_type; | |
727 | h->dev.bus = &cciss_bus_type; | |
728 | dev_set_name(&h->dev, "%s", h->devname); | |
729 | h->dev.parent = &h->pdev->dev; | |
730 | ||
731 | return device_add(&h->dev); | |
732 | } | |
733 | ||
734 | /* | |
735 | * Remove sysfs entries for an hba. | |
736 | */ | |
737 | static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) | |
738 | { | |
739 | device_del(&h->dev); | |
617e1344 SC |
740 | put_device(&h->dev); /* final put. */ |
741 | } | |
742 | ||
743 | /* cciss_device_release is called when the reference count | |
9cef0d2f | 744 | * of h->drv[x]dev goes to zero. |
617e1344 SC |
745 | */ |
746 | static void cciss_device_release(struct device *dev) | |
747 | { | |
9cef0d2f SC |
748 | drive_info_struct *drv = to_drv(dev); |
749 | kfree(drv); | |
7fe06326 AP |
750 | } |
751 | ||
752 | /* | |
753 | * Initialize sysfs for each logical drive. This sets up and registers | |
754 | * the 'c#d#' directory for each individual logical drive under | |
755 | * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from | |
756 | * /sys/block/cciss!c#d# to this entry. | |
757 | */ | |
617e1344 | 758 | static long cciss_create_ld_sysfs_entry(struct ctlr_info *h, |
7fe06326 AP |
759 | int drv_index) |
760 | { | |
617e1344 SC |
761 | struct device *dev; |
762 | ||
9cef0d2f | 763 | if (h->drv[drv_index]->device_initialized) |
8ce51966 SC |
764 | return 0; |
765 | ||
9cef0d2f | 766 | dev = &h->drv[drv_index]->dev; |
617e1344 SC |
767 | device_initialize(dev); |
768 | dev->type = &cciss_dev_type; | |
769 | dev->bus = &cciss_bus_type; | |
770 | dev_set_name(dev, "c%dd%d", h->ctlr, drv_index); | |
771 | dev->parent = &h->dev; | |
9cef0d2f | 772 | h->drv[drv_index]->device_initialized = 1; |
617e1344 | 773 | return device_add(dev); |
7fe06326 AP |
774 | } |
775 | ||
776 | /* | |
777 | * Remove sysfs entries for a logical drive. | |
778 | */ | |
8ce51966 SC |
779 | static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index, |
780 | int ctlr_exiting) | |
7fe06326 | 781 | { |
9cef0d2f | 782 | struct device *dev = &h->drv[drv_index]->dev; |
8ce51966 SC |
783 | |
784 | /* special case for c*d0, we only destroy it on controller exit */ | |
785 | if (drv_index == 0 && !ctlr_exiting) | |
786 | return; | |
787 | ||
617e1344 SC |
788 | device_del(dev); |
789 | put_device(dev); /* the "final" put. */ | |
9cef0d2f | 790 | h->drv[drv_index] = NULL; |
7fe06326 AP |
791 | } |
792 | ||
7c832835 BH |
793 | /* |
794 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 795 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
796 | * which ones are free or in use. For operations that can wait for kmalloc |
797 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
798 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
799 | */ | |
800 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
801 | { |
802 | CommandList_struct *c; | |
7c832835 | 803 | int i; |
1da177e4 LT |
804 | u64bit temp64; |
805 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
806 | ||
7c832835 BH |
807 | if (!get_from_pool) { |
808 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
809 | sizeof(CommandList_struct), &cmd_dma_handle); | |
810 | if (c == NULL) | |
811 | return NULL; | |
1da177e4 LT |
812 | memset(c, 0, sizeof(CommandList_struct)); |
813 | ||
33079b21 MM |
814 | c->cmdindex = -1; |
815 | ||
7c832835 BH |
816 | c->err_info = (ErrorInfo_struct *) |
817 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
818 | &err_dma_handle); | |
819 | ||
820 | if (c->err_info == NULL) { | |
821 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
822 | sizeof(CommandList_struct), c, cmd_dma_handle); |
823 | return NULL; | |
824 | } | |
825 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
826 | } else { /* get it out of the controllers pool */ |
827 | ||
828 | do { | |
f880632f MM |
829 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
830 | if (i == h->nr_cmds) | |
7c832835 BH |
831 | return NULL; |
832 | } while (test_and_set_bit | |
833 | (i & (BITS_PER_LONG - 1), | |
834 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
835 | #ifdef CCISS_DEBUG |
836 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
837 | #endif | |
7c832835 | 838 | c = h->cmd_pool + i; |
1da177e4 | 839 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
840 | cmd_dma_handle = h->cmd_pool_dhandle |
841 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
842 | c->err_info = h->errinfo_pool + i; |
843 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
844 | err_dma_handle = h->errinfo_pool_dhandle |
845 | + i * sizeof(ErrorInfo_struct); | |
846 | h->nr_allocs++; | |
33079b21 MM |
847 | |
848 | c->cmdindex = i; | |
7c832835 | 849 | } |
1da177e4 | 850 | |
8a3173de | 851 | INIT_HLIST_NODE(&c->list); |
1da177e4 | 852 | c->busaddr = (__u32) cmd_dma_handle; |
7c832835 | 853 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
854 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
855 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
856 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 857 | |
7c832835 BH |
858 | c->ctlr = h->ctlr; |
859 | return c; | |
1da177e4 LT |
860 | } |
861 | ||
7c832835 BH |
862 | /* |
863 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
864 | */ |
865 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
866 | { | |
867 | int i; | |
868 | u64bit temp64; | |
869 | ||
7c832835 | 870 | if (!got_from_pool) { |
1da177e4 LT |
871 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
872 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
873 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
874 | c->err_info, (dma_addr_t) temp64.val); | |
875 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
876 | c, (dma_addr_t) c->busaddr); | |
877 | } else { | |
1da177e4 | 878 | i = c - h->cmd_pool; |
7c832835 BH |
879 | clear_bit(i & (BITS_PER_LONG - 1), |
880 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
881 | h->nr_frees++; | |
882 | } | |
1da177e4 LT |
883 | } |
884 | ||
885 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
886 | { | |
7c832835 | 887 | return disk->queue->queuedata; |
1da177e4 LT |
888 | } |
889 | ||
890 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
891 | { | |
892 | return disk->private_data; | |
893 | } | |
894 | ||
895 | /* | |
896 | * Open. Make sure the device is really there. | |
897 | */ | |
ef7822c2 | 898 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
1da177e4 | 899 | { |
ef7822c2 AV |
900 | ctlr_info_t *host = get_host(bdev->bd_disk); |
901 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1da177e4 LT |
902 | |
903 | #ifdef CCISS_DEBUG | |
ef7822c2 | 904 | printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name); |
7c832835 | 905 | #endif /* CCISS_DEBUG */ |
1da177e4 | 906 | |
2e043986 | 907 | if (drv->busy_configuring) |
ddd47442 | 908 | return -EBUSY; |
1da177e4 LT |
909 | /* |
910 | * Root is allowed to open raw volume zero even if it's not configured | |
911 | * so array config can still work. Root is also allowed to open any | |
912 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
913 | * disk information. I don't think I really like this | |
914 | * but I'm already using way to many device nodes to claim another one | |
915 | * for "raw controller". | |
916 | */ | |
7a06f789 | 917 | if (drv->heads == 0) { |
ef7822c2 | 918 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
1da177e4 | 919 | /* if not node 0 make sure it is a partition = 0 */ |
ef7822c2 | 920 | if (MINOR(bdev->bd_dev) & 0x0f) { |
7c832835 | 921 | return -ENXIO; |
1da177e4 | 922 | /* if it is, make sure we have a LUN ID */ |
39ccf9a6 SC |
923 | } else if (memcmp(drv->LunID, CTLR_LUNID, |
924 | sizeof(drv->LunID))) { | |
1da177e4 LT |
925 | return -ENXIO; |
926 | } | |
927 | } | |
928 | if (!capable(CAP_SYS_ADMIN)) | |
929 | return -EPERM; | |
930 | } | |
931 | drv->usage_count++; | |
932 | host->usage_count++; | |
933 | return 0; | |
934 | } | |
7c832835 | 935 | |
1da177e4 LT |
936 | /* |
937 | * Close. Sync first. | |
938 | */ | |
ef7822c2 | 939 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
1da177e4 | 940 | { |
ef7822c2 AV |
941 | ctlr_info_t *host = get_host(disk); |
942 | drive_info_struct *drv = get_drv(disk); | |
1da177e4 LT |
943 | |
944 | #ifdef CCISS_DEBUG | |
ef7822c2 | 945 | printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name); |
7c832835 | 946 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
947 | |
948 | drv->usage_count--; | |
949 | host->usage_count--; | |
950 | return 0; | |
951 | } | |
952 | ||
953 | #ifdef CONFIG_COMPAT | |
954 | ||
ef7822c2 AV |
955 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
956 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
957 | { |
958 | int ret; | |
959 | lock_kernel(); | |
ef7822c2 | 960 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
961 | unlock_kernel(); |
962 | return ret; | |
963 | } | |
964 | ||
ef7822c2 AV |
965 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
966 | unsigned cmd, unsigned long arg); | |
967 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, | |
968 | unsigned cmd, unsigned long arg); | |
1da177e4 | 969 | |
ef7822c2 AV |
970 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
971 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
972 | { |
973 | switch (cmd) { | |
974 | case CCISS_GETPCIINFO: | |
975 | case CCISS_GETINTINFO: | |
976 | case CCISS_SETINTINFO: | |
977 | case CCISS_GETNODENAME: | |
978 | case CCISS_SETNODENAME: | |
979 | case CCISS_GETHEARTBEAT: | |
980 | case CCISS_GETBUSTYPES: | |
981 | case CCISS_GETFIRMVER: | |
982 | case CCISS_GETDRIVVER: | |
983 | case CCISS_REVALIDVOLS: | |
984 | case CCISS_DEREGDISK: | |
985 | case CCISS_REGNEWDISK: | |
986 | case CCISS_REGNEWD: | |
987 | case CCISS_RESCANDISK: | |
988 | case CCISS_GETLUNINFO: | |
ef7822c2 | 989 | return do_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
990 | |
991 | case CCISS_PASSTHRU32: | |
ef7822c2 | 992 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
1da177e4 | 993 | case CCISS_BIG_PASSTHRU32: |
ef7822c2 | 994 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
1da177e4 LT |
995 | |
996 | default: | |
997 | return -ENOIOCTLCMD; | |
998 | } | |
999 | } | |
1000 | ||
ef7822c2 AV |
1001 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
1002 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1003 | { |
1004 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 1005 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
1006 | IOCTL_Command_struct arg64; |
1007 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
1008 | int err; | |
1009 | u32 cp; | |
1010 | ||
1011 | err = 0; | |
7c832835 BH |
1012 | err |= |
1013 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1014 | sizeof(arg64.LUN_info)); | |
1015 | err |= | |
1016 | copy_from_user(&arg64.Request, &arg32->Request, | |
1017 | sizeof(arg64.Request)); | |
1018 | err |= | |
1019 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1020 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1021 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1022 | err |= get_user(cp, &arg32->buf); | |
1023 | arg64.buf = compat_ptr(cp); | |
1024 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1025 | ||
1026 | if (err) | |
1027 | return -EFAULT; | |
1028 | ||
ef7822c2 | 1029 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1030 | if (err) |
1031 | return err; | |
7c832835 BH |
1032 | err |= |
1033 | copy_in_user(&arg32->error_info, &p->error_info, | |
1034 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1035 | if (err) |
1036 | return -EFAULT; | |
1037 | return err; | |
1038 | } | |
1039 | ||
ef7822c2 AV |
1040 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
1041 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1042 | { |
1043 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 1044 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 1045 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
1046 | BIG_IOCTL_Command_struct __user *p = |
1047 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
1048 | int err; |
1049 | u32 cp; | |
1050 | ||
1051 | err = 0; | |
7c832835 BH |
1052 | err |= |
1053 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1054 | sizeof(arg64.LUN_info)); | |
1055 | err |= | |
1056 | copy_from_user(&arg64.Request, &arg32->Request, | |
1057 | sizeof(arg64.Request)); | |
1058 | err |= | |
1059 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1060 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1061 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1062 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
1063 | err |= get_user(cp, &arg32->buf); | |
1064 | arg64.buf = compat_ptr(cp); | |
1065 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1066 | ||
1067 | if (err) | |
7c832835 | 1068 | return -EFAULT; |
1da177e4 | 1069 | |
ef7822c2 | 1070 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1071 | if (err) |
1072 | return err; | |
7c832835 BH |
1073 | err |= |
1074 | copy_in_user(&arg32->error_info, &p->error_info, | |
1075 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1076 | if (err) |
1077 | return -EFAULT; | |
1078 | return err; | |
1079 | } | |
1080 | #endif | |
a885c8c4 CH |
1081 | |
1082 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
1083 | { | |
1084 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1085 | ||
1086 | if (!drv->cylinders) | |
1087 | return -ENXIO; | |
1088 | ||
1089 | geo->heads = drv->heads; | |
1090 | geo->sectors = drv->sectors; | |
1091 | geo->cylinders = drv->cylinders; | |
1092 | return 0; | |
1093 | } | |
1094 | ||
0a9279cc MM |
1095 | static void check_ioctl_unit_attention(ctlr_info_t *host, CommandList_struct *c) |
1096 | { | |
1097 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
1098 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) | |
1099 | (void)check_for_unit_attention(host, c); | |
1100 | } | |
1da177e4 | 1101 | /* |
7c832835 | 1102 | * ioctl |
1da177e4 | 1103 | */ |
ef7822c2 | 1104 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
7c832835 | 1105 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1106 | { |
1da177e4 LT |
1107 | struct gendisk *disk = bdev->bd_disk; |
1108 | ctlr_info_t *host = get_host(disk); | |
1109 | drive_info_struct *drv = get_drv(disk); | |
1110 | int ctlr = host->ctlr; | |
1111 | void __user *argp = (void __user *)arg; | |
1112 | ||
1113 | #ifdef CCISS_DEBUG | |
1114 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
1115 | #endif /* CCISS_DEBUG */ |
1116 | ||
1117 | switch (cmd) { | |
1da177e4 | 1118 | case CCISS_GETPCIINFO: |
7c832835 BH |
1119 | { |
1120 | cciss_pci_info_struct pciinfo; | |
1121 | ||
1122 | if (!arg) | |
1123 | return -EINVAL; | |
1124 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
1125 | pciinfo.bus = host->pdev->bus->number; | |
1126 | pciinfo.dev_fn = host->pdev->devfn; | |
1127 | pciinfo.board_id = host->board_id; | |
1128 | if (copy_to_user | |
1129 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
1130 | return -EFAULT; | |
1131 | return 0; | |
1132 | } | |
1da177e4 | 1133 | case CCISS_GETINTINFO: |
7c832835 BH |
1134 | { |
1135 | cciss_coalint_struct intinfo; | |
1136 | if (!arg) | |
1137 | return -EINVAL; | |
1138 | intinfo.delay = | |
1139 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
1140 | intinfo.count = | |
1141 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
1142 | if (copy_to_user | |
1143 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
1144 | return -EFAULT; | |
1145 | return 0; | |
1146 | } | |
1da177e4 | 1147 | case CCISS_SETINTINFO: |
1da177e4 | 1148 | { |
7c832835 BH |
1149 | cciss_coalint_struct intinfo; |
1150 | unsigned long flags; | |
1151 | int i; | |
1152 | ||
1153 | if (!arg) | |
1154 | return -EINVAL; | |
1155 | if (!capable(CAP_SYS_ADMIN)) | |
1156 | return -EPERM; | |
1157 | if (copy_from_user | |
1158 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
1159 | return -EFAULT; | |
1160 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
1161 | { | |
1162 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
1163 | return -EINVAL; | |
1164 | } | |
1165 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1166 | /* Update the field, and then ring the doorbell */ | |
1167 | writel(intinfo.delay, | |
1168 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
1169 | writel(intinfo.count, | |
1170 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
1171 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
1172 | ||
1173 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1174 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
1175 | & CFGTBL_ChangeReq)) | |
1176 | break; | |
1177 | /* delay and try again */ | |
1178 | udelay(1000); | |
1179 | } | |
1180 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1181 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1182 | return -EAGAIN; | |
1183 | return 0; | |
1da177e4 | 1184 | } |
1da177e4 | 1185 | case CCISS_GETNODENAME: |
7c832835 BH |
1186 | { |
1187 | NodeName_type NodeName; | |
1188 | int i; | |
1189 | ||
1190 | if (!arg) | |
1191 | return -EINVAL; | |
1192 | for (i = 0; i < 16; i++) | |
1193 | NodeName[i] = | |
1194 | readb(&host->cfgtable->ServerName[i]); | |
1195 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
1196 | return -EFAULT; | |
1197 | return 0; | |
1198 | } | |
1da177e4 | 1199 | case CCISS_SETNODENAME: |
7c832835 BH |
1200 | { |
1201 | NodeName_type NodeName; | |
1202 | unsigned long flags; | |
1203 | int i; | |
1204 | ||
1205 | if (!arg) | |
1206 | return -EINVAL; | |
1207 | if (!capable(CAP_SYS_ADMIN)) | |
1208 | return -EPERM; | |
1209 | ||
1210 | if (copy_from_user | |
1211 | (NodeName, argp, sizeof(NodeName_type))) | |
1212 | return -EFAULT; | |
1213 | ||
1214 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1215 | ||
1216 | /* Update the field, and then ring the doorbell */ | |
1217 | for (i = 0; i < 16; i++) | |
1218 | writeb(NodeName[i], | |
1219 | &host->cfgtable->ServerName[i]); | |
1220 | ||
1221 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
1222 | ||
1223 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1224 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
1225 | & CFGTBL_ChangeReq)) | |
1226 | break; | |
1227 | /* delay and try again */ | |
1228 | udelay(1000); | |
1229 | } | |
1230 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1231 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1232 | return -EAGAIN; | |
1233 | return 0; | |
1234 | } | |
1da177e4 LT |
1235 | |
1236 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
1237 | { |
1238 | Heartbeat_type heartbeat; | |
1239 | ||
1240 | if (!arg) | |
1241 | return -EINVAL; | |
1242 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
1243 | if (copy_to_user | |
1244 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
1245 | return -EFAULT; | |
1246 | return 0; | |
1247 | } | |
1da177e4 | 1248 | case CCISS_GETBUSTYPES: |
7c832835 BH |
1249 | { |
1250 | BusTypes_type BusTypes; | |
1251 | ||
1252 | if (!arg) | |
1253 | return -EINVAL; | |
1254 | BusTypes = readl(&host->cfgtable->BusTypes); | |
1255 | if (copy_to_user | |
1256 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
1257 | return -EFAULT; | |
1258 | return 0; | |
1259 | } | |
1da177e4 | 1260 | case CCISS_GETFIRMVER: |
7c832835 BH |
1261 | { |
1262 | FirmwareVer_type firmware; | |
1da177e4 | 1263 | |
7c832835 BH |
1264 | if (!arg) |
1265 | return -EINVAL; | |
1266 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 1267 | |
7c832835 BH |
1268 | if (copy_to_user |
1269 | (argp, firmware, sizeof(FirmwareVer_type))) | |
1270 | return -EFAULT; | |
1271 | return 0; | |
1272 | } | |
1273 | case CCISS_GETDRIVVER: | |
1274 | { | |
1275 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 1276 | |
7c832835 BH |
1277 | if (!arg) |
1278 | return -EINVAL; | |
1da177e4 | 1279 | |
7c832835 BH |
1280 | if (copy_to_user |
1281 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
1282 | return -EFAULT; | |
1283 | return 0; | |
1284 | } | |
1da177e4 | 1285 | |
6ae5ce8e MM |
1286 | case CCISS_DEREGDISK: |
1287 | case CCISS_REGNEWD: | |
1da177e4 | 1288 | case CCISS_REVALIDVOLS: |
2d11d993 | 1289 | return rebuild_lun_table(host, 0, 1); |
7c832835 BH |
1290 | |
1291 | case CCISS_GETLUNINFO:{ | |
1292 | LogvolInfo_struct luninfo; | |
1293 | ||
39ccf9a6 SC |
1294 | memcpy(&luninfo.LunID, drv->LunID, |
1295 | sizeof(luninfo.LunID)); | |
7c832835 BH |
1296 | luninfo.num_opens = drv->usage_count; |
1297 | luninfo.num_parts = 0; | |
1298 | if (copy_to_user(argp, &luninfo, | |
1299 | sizeof(LogvolInfo_struct))) | |
1300 | return -EFAULT; | |
1301 | return 0; | |
1302 | } | |
1da177e4 | 1303 | case CCISS_PASSTHRU: |
1da177e4 | 1304 | { |
7c832835 BH |
1305 | IOCTL_Command_struct iocommand; |
1306 | CommandList_struct *c; | |
1307 | char *buff = NULL; | |
1308 | u64bit temp64; | |
1309 | unsigned long flags; | |
6e9a4738 | 1310 | DECLARE_COMPLETION_ONSTACK(wait); |
1da177e4 | 1311 | |
7c832835 BH |
1312 | if (!arg) |
1313 | return -EINVAL; | |
1da177e4 | 1314 | |
7c832835 BH |
1315 | if (!capable(CAP_SYS_RAWIO)) |
1316 | return -EPERM; | |
1da177e4 | 1317 | |
7c832835 BH |
1318 | if (copy_from_user |
1319 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
1320 | return -EFAULT; | |
1321 | if ((iocommand.buf_size < 1) && | |
1322 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
1323 | return -EINVAL; | |
1324 | } | |
1325 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
1326 | /* Check kmalloc limits */ | |
1327 | if (iocommand.buf_size > 128000) | |
1328 | return -EINVAL; | |
1329 | #endif | |
1330 | if (iocommand.buf_size > 0) { | |
1331 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
1332 | if (buff == NULL) | |
1333 | return -EFAULT; | |
1334 | } | |
1335 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
1336 | /* Copy the data into the buffer we created */ | |
1337 | if (copy_from_user | |
1338 | (buff, iocommand.buf, iocommand.buf_size)) { | |
1339 | kfree(buff); | |
1340 | return -EFAULT; | |
1341 | } | |
1342 | } else { | |
1343 | memset(buff, 0, iocommand.buf_size); | |
1344 | } | |
1345 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1346 | kfree(buff); | |
1347 | return -ENOMEM; | |
1348 | } | |
1349 | // Fill in the command type | |
1350 | c->cmd_type = CMD_IOCTL_PEND; | |
1351 | // Fill in Command Header | |
1352 | c->Header.ReplyQueue = 0; // unused in simple mode | |
1353 | if (iocommand.buf_size > 0) // buffer to fill | |
1354 | { | |
1355 | c->Header.SGList = 1; | |
1356 | c->Header.SGTotal = 1; | |
1357 | } else // no buffers to fill | |
1358 | { | |
1359 | c->Header.SGList = 0; | |
1360 | c->Header.SGTotal = 0; | |
1361 | } | |
1362 | c->Header.LUN = iocommand.LUN_info; | |
1363 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag | |
1da177e4 | 1364 | |
7c832835 BH |
1365 | // Fill in Request block |
1366 | c->Request = iocommand.Request; | |
1da177e4 | 1367 | |
7c832835 BH |
1368 | // Fill in the scatter gather information |
1369 | if (iocommand.buf_size > 0) { | |
1370 | temp64.val = pci_map_single(host->pdev, buff, | |
1371 | iocommand.buf_size, | |
1372 | PCI_DMA_BIDIRECTIONAL); | |
1373 | c->SG[0].Addr.lower = temp64.val32.lower; | |
1374 | c->SG[0].Addr.upper = temp64.val32.upper; | |
1375 | c->SG[0].Len = iocommand.buf_size; | |
1376 | c->SG[0].Ext = 0; // we are not chaining | |
1377 | } | |
1378 | c->waiting = &wait; | |
1379 | ||
1380 | /* Put the request on the tail of the request queue */ | |
1381 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1382 | addQ(&host->reqQ, c); | |
1383 | host->Qdepth++; | |
1384 | start_io(host); | |
1385 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1386 | ||
1387 | wait_for_completion(&wait); | |
1388 | ||
1389 | /* unlock the buffers from DMA */ | |
1390 | temp64.val32.lower = c->SG[0].Addr.lower; | |
1391 | temp64.val32.upper = c->SG[0].Addr.upper; | |
1392 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
1393 | iocommand.buf_size, | |
1394 | PCI_DMA_BIDIRECTIONAL); | |
1395 | ||
0a9279cc MM |
1396 | check_ioctl_unit_attention(host, c); |
1397 | ||
7c832835 BH |
1398 | /* Copy the error information out */ |
1399 | iocommand.error_info = *(c->err_info); | |
1400 | if (copy_to_user | |
1401 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
1402 | kfree(buff); | |
1da177e4 LT |
1403 | cmd_free(host, c, 0); |
1404 | return -EFAULT; | |
1405 | } | |
7c832835 BH |
1406 | |
1407 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
1408 | /* Copy the data out of the buffer we created */ | |
1409 | if (copy_to_user | |
1410 | (iocommand.buf, buff, iocommand.buf_size)) { | |
1411 | kfree(buff); | |
1412 | cmd_free(host, c, 0); | |
1413 | return -EFAULT; | |
1414 | } | |
1415 | } | |
1416 | kfree(buff); | |
1417 | cmd_free(host, c, 0); | |
1418 | return 0; | |
1da177e4 | 1419 | } |
7c832835 BH |
1420 | case CCISS_BIG_PASSTHRU:{ |
1421 | BIG_IOCTL_Command_struct *ioc; | |
1422 | CommandList_struct *c; | |
1423 | unsigned char **buff = NULL; | |
1424 | int *buff_size = NULL; | |
1425 | u64bit temp64; | |
1426 | unsigned long flags; | |
1427 | BYTE sg_used = 0; | |
1428 | int status = 0; | |
1429 | int i; | |
6e9a4738 | 1430 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1431 | __u32 left; |
1432 | __u32 sz; | |
1433 | BYTE __user *data_ptr; | |
1434 | ||
1435 | if (!arg) | |
1436 | return -EINVAL; | |
1437 | if (!capable(CAP_SYS_RAWIO)) | |
1438 | return -EPERM; | |
1439 | ioc = (BIG_IOCTL_Command_struct *) | |
1440 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1441 | if (!ioc) { | |
1442 | status = -ENOMEM; | |
1443 | goto cleanup1; | |
1444 | } | |
1445 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1446 | status = -EFAULT; | |
1447 | goto cleanup1; | |
1448 | } | |
1449 | if ((ioc->buf_size < 1) && | |
1450 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1451 | status = -EINVAL; |
1452 | goto cleanup1; | |
7c832835 BH |
1453 | } |
1454 | /* Check kmalloc limits using all SGs */ | |
1455 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1456 | status = -EINVAL; | |
1457 | goto cleanup1; | |
1458 | } | |
1459 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1460 | status = -EINVAL; | |
1461 | goto cleanup1; | |
1462 | } | |
1463 | buff = | |
1464 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1465 | if (!buff) { | |
1da177e4 LT |
1466 | status = -ENOMEM; |
1467 | goto cleanup1; | |
1468 | } | |
5cbded58 | 1469 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
7c832835 BH |
1470 | GFP_KERNEL); |
1471 | if (!buff_size) { | |
1472 | status = -ENOMEM; | |
1473 | goto cleanup1; | |
1474 | } | |
1475 | left = ioc->buf_size; | |
1476 | data_ptr = ioc->buf; | |
1477 | while (left) { | |
1478 | sz = (left > | |
1479 | ioc->malloc_size) ? ioc-> | |
1480 | malloc_size : left; | |
1481 | buff_size[sg_used] = sz; | |
1482 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1483 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1484 | status = -ENOMEM; |
15534d38 JA |
1485 | goto cleanup1; |
1486 | } | |
7c832835 BH |
1487 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1488 | if (copy_from_user | |
1489 | (buff[sg_used], data_ptr, sz)) { | |
f7108f91 | 1490 | status = -EFAULT; |
7c832835 BH |
1491 | goto cleanup1; |
1492 | } | |
1493 | } else { | |
1494 | memset(buff[sg_used], 0, sz); | |
1495 | } | |
1496 | left -= sz; | |
1497 | data_ptr += sz; | |
1498 | sg_used++; | |
1499 | } | |
1500 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1501 | status = -ENOMEM; | |
1502 | goto cleanup1; | |
1503 | } | |
1504 | c->cmd_type = CMD_IOCTL_PEND; | |
1505 | c->Header.ReplyQueue = 0; | |
1506 | ||
1507 | if (ioc->buf_size > 0) { | |
1508 | c->Header.SGList = sg_used; | |
1509 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1510 | } else { |
7c832835 BH |
1511 | c->Header.SGList = 0; |
1512 | c->Header.SGTotal = 0; | |
1da177e4 | 1513 | } |
7c832835 BH |
1514 | c->Header.LUN = ioc->LUN_info; |
1515 | c->Header.Tag.lower = c->busaddr; | |
1516 | ||
1517 | c->Request = ioc->Request; | |
1518 | if (ioc->buf_size > 0) { | |
1519 | int i; | |
1520 | for (i = 0; i < sg_used; i++) { | |
1521 | temp64.val = | |
1522 | pci_map_single(host->pdev, buff[i], | |
1523 | buff_size[i], | |
1524 | PCI_DMA_BIDIRECTIONAL); | |
1525 | c->SG[i].Addr.lower = | |
1526 | temp64.val32.lower; | |
1527 | c->SG[i].Addr.upper = | |
1528 | temp64.val32.upper; | |
1529 | c->SG[i].Len = buff_size[i]; | |
1530 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1531 | } | |
1532 | } | |
1533 | c->waiting = &wait; | |
1534 | /* Put the request on the tail of the request queue */ | |
1535 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1536 | addQ(&host->reqQ, c); | |
1537 | host->Qdepth++; | |
1538 | start_io(host); | |
1539 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1540 | wait_for_completion(&wait); | |
1541 | /* unlock the buffers from DMA */ | |
1542 | for (i = 0; i < sg_used; i++) { | |
1543 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1544 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1545 | pci_unmap_single(host->pdev, | |
1546 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1547 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1548 | } |
0a9279cc | 1549 | check_ioctl_unit_attention(host, c); |
7c832835 BH |
1550 | /* Copy the error information out */ |
1551 | ioc->error_info = *(c->err_info); | |
1552 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1553 | cmd_free(host, c, 0); | |
1554 | status = -EFAULT; | |
1555 | goto cleanup1; | |
1556 | } | |
1557 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1558 | /* Copy the data out of the buffer we created */ | |
1559 | BYTE __user *ptr = ioc->buf; | |
1560 | for (i = 0; i < sg_used; i++) { | |
1561 | if (copy_to_user | |
1562 | (ptr, buff[i], buff_size[i])) { | |
1563 | cmd_free(host, c, 0); | |
1564 | status = -EFAULT; | |
1565 | goto cleanup1; | |
1566 | } | |
1567 | ptr += buff_size[i]; | |
1da177e4 | 1568 | } |
1da177e4 | 1569 | } |
7c832835 BH |
1570 | cmd_free(host, c, 0); |
1571 | status = 0; | |
1572 | cleanup1: | |
1573 | if (buff) { | |
1574 | for (i = 0; i < sg_used; i++) | |
1575 | kfree(buff[i]); | |
1576 | kfree(buff); | |
1577 | } | |
1578 | kfree(buff_size); | |
1579 | kfree(ioc); | |
1580 | return status; | |
1da177e4 | 1581 | } |
03bbfee5 MMOD |
1582 | |
1583 | /* scsi_cmd_ioctl handles these, below, though some are not */ | |
1584 | /* very meaningful for cciss. SG_IO is the main one people want. */ | |
1585 | ||
1586 | case SG_GET_VERSION_NUM: | |
1587 | case SG_SET_TIMEOUT: | |
1588 | case SG_GET_TIMEOUT: | |
1589 | case SG_GET_RESERVED_SIZE: | |
1590 | case SG_SET_RESERVED_SIZE: | |
1591 | case SG_EMULATED_HOST: | |
1592 | case SG_IO: | |
1593 | case SCSI_IOCTL_SEND_COMMAND: | |
ef7822c2 | 1594 | return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
03bbfee5 MMOD |
1595 | |
1596 | /* scsi_cmd_ioctl would normally handle these, below, but */ | |
1597 | /* they aren't a good fit for cciss, as CD-ROMs are */ | |
1598 | /* not supported, and we don't have any bus/target/lun */ | |
1599 | /* which we present to the kernel. */ | |
1600 | ||
1601 | case CDROM_SEND_PACKET: | |
1602 | case CDROMCLOSETRAY: | |
1603 | case CDROMEJECT: | |
1604 | case SCSI_IOCTL_GET_IDLUN: | |
1605 | case SCSI_IOCTL_GET_BUS_NUMBER: | |
1da177e4 LT |
1606 | default: |
1607 | return -ENOTTY; | |
1608 | } | |
1da177e4 LT |
1609 | } |
1610 | ||
7b30f092 JA |
1611 | static void cciss_check_queues(ctlr_info_t *h) |
1612 | { | |
1613 | int start_queue = h->next_to_run; | |
1614 | int i; | |
1615 | ||
1616 | /* check to see if we have maxed out the number of commands that can | |
1617 | * be placed on the queue. If so then exit. We do this check here | |
1618 | * in case the interrupt we serviced was from an ioctl and did not | |
1619 | * free any new commands. | |
1620 | */ | |
f880632f | 1621 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1622 | return; |
1623 | ||
1624 | /* We have room on the queue for more commands. Now we need to queue | |
1625 | * them up. We will also keep track of the next queue to run so | |
1626 | * that every queue gets a chance to be started first. | |
1627 | */ | |
1628 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1629 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1630 | /* make sure the disk has been added and the drive is real | |
1631 | * because this can be called from the middle of init_one. | |
1632 | */ | |
9cef0d2f SC |
1633 | if (!h->drv[curr_queue]) |
1634 | continue; | |
1635 | if (!(h->drv[curr_queue]->queue) || | |
1636 | !(h->drv[curr_queue]->heads)) | |
7b30f092 JA |
1637 | continue; |
1638 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1639 | ||
1640 | /* check to see if we have maxed out the number of commands | |
1641 | * that can be placed on the queue. | |
1642 | */ | |
f880632f | 1643 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1644 | if (curr_queue == start_queue) { |
1645 | h->next_to_run = | |
1646 | (start_queue + 1) % (h->highest_lun + 1); | |
1647 | break; | |
1648 | } else { | |
1649 | h->next_to_run = curr_queue; | |
1650 | break; | |
1651 | } | |
7b30f092 JA |
1652 | } |
1653 | } | |
1654 | } | |
1655 | ||
ca1e0484 MM |
1656 | static void cciss_softirq_done(struct request *rq) |
1657 | { | |
1658 | CommandList_struct *cmd = rq->completion_data; | |
1659 | ctlr_info_t *h = hba[cmd->ctlr]; | |
1660 | unsigned long flags; | |
1661 | u64bit temp64; | |
1662 | int i, ddir; | |
1663 | ||
1664 | if (cmd->Request.Type.Direction == XFER_READ) | |
1665 | ddir = PCI_DMA_FROMDEVICE; | |
1666 | else | |
1667 | ddir = PCI_DMA_TODEVICE; | |
1668 | ||
1669 | /* command did not need to be retried */ | |
1670 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1671 | for (i = 0; i < cmd->Header.SGList; i++) { |
ca1e0484 MM |
1672 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
1673 | temp64.val32.upper = cmd->SG[i].Addr.upper; | |
1674 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); | |
1675 | } | |
1676 | ||
ca1e0484 MM |
1677 | #ifdef CCISS_DEBUG |
1678 | printk("Done with %p\n", rq); | |
7c832835 | 1679 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1680 | |
c3a4d78c | 1681 | /* set the residual count for pc requests */ |
ac44e5b2 | 1682 | if (blk_pc_request(rq)) |
c3a4d78c | 1683 | rq->resid_len = cmd->err_info->ResidualCnt; |
ac44e5b2 | 1684 | |
c3a4d78c | 1685 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
3daeea29 | 1686 | |
ca1e0484 | 1687 | spin_lock_irqsave(&h->lock, flags); |
7c832835 | 1688 | cmd_free(h, cmd, 1); |
7b30f092 | 1689 | cciss_check_queues(h); |
ca1e0484 MM |
1690 | spin_unlock_irqrestore(&h->lock, flags); |
1691 | } | |
1692 | ||
39ccf9a6 SC |
1693 | static inline void log_unit_to_scsi3addr(ctlr_info_t *h, |
1694 | unsigned char scsi3addr[], uint32_t log_unit) | |
b57695fe | 1695 | { |
9cef0d2f SC |
1696 | memcpy(scsi3addr, h->drv[log_unit]->LunID, |
1697 | sizeof(h->drv[log_unit]->LunID)); | |
b57695fe | 1698 | } |
1699 | ||
7fe06326 AP |
1700 | /* This function gets the SCSI vendor, model, and revision of a logical drive |
1701 | * via the inquiry page 0. Model, vendor, and rev are set to empty strings if | |
1702 | * they cannot be read. | |
1703 | */ | |
1704 | static void cciss_get_device_descr(int ctlr, int logvol, int withirq, | |
1705 | char *vendor, char *model, char *rev) | |
1706 | { | |
1707 | int rc; | |
1708 | InquiryData_struct *inq_buf; | |
b57695fe | 1709 | unsigned char scsi3addr[8]; |
7fe06326 AP |
1710 | |
1711 | *vendor = '\0'; | |
1712 | *model = '\0'; | |
1713 | *rev = '\0'; | |
1714 | ||
1715 | inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
1716 | if (!inq_buf) | |
1717 | return; | |
1718 | ||
b57695fe | 1719 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7fe06326 AP |
1720 | if (withirq) |
1721 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buf, | |
b57695fe | 1722 | sizeof(InquiryData_struct), 0, |
1723 | scsi3addr, TYPE_CMD); | |
7fe06326 AP |
1724 | else |
1725 | rc = sendcmd(CISS_INQUIRY, ctlr, inq_buf, | |
b57695fe | 1726 | sizeof(InquiryData_struct), 0, |
1727 | scsi3addr, TYPE_CMD); | |
7fe06326 AP |
1728 | if (rc == IO_OK) { |
1729 | memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); | |
1730 | vendor[VENDOR_LEN] = '\0'; | |
1731 | memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); | |
1732 | model[MODEL_LEN] = '\0'; | |
1733 | memcpy(rev, &inq_buf->data_byte[32], REV_LEN); | |
1734 | rev[REV_LEN] = '\0'; | |
1735 | } | |
1736 | ||
1737 | kfree(inq_buf); | |
1738 | return; | |
1739 | } | |
1740 | ||
a72da29b MM |
1741 | /* This function gets the serial number of a logical drive via |
1742 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial | |
1743 | * number cannot be had, for whatever reason, 16 bytes of 0xff | |
1744 | * are returned instead. | |
1745 | */ | |
1746 | static void cciss_get_serial_no(int ctlr, int logvol, int withirq, | |
1747 | unsigned char *serial_no, int buflen) | |
1748 | { | |
1749 | #define PAGE_83_INQ_BYTES 64 | |
1750 | int rc; | |
1751 | unsigned char *buf; | |
b57695fe | 1752 | unsigned char scsi3addr[8]; |
a72da29b MM |
1753 | |
1754 | if (buflen > 16) | |
1755 | buflen = 16; | |
1756 | memset(serial_no, 0xff, buflen); | |
1757 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); | |
1758 | if (!buf) | |
1759 | return; | |
1760 | memset(serial_no, 0, buflen); | |
b57695fe | 1761 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
a72da29b MM |
1762 | if (withirq) |
1763 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf, | |
b57695fe | 1764 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
a72da29b MM |
1765 | else |
1766 | rc = sendcmd(CISS_INQUIRY, ctlr, buf, | |
b57695fe | 1767 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
a72da29b MM |
1768 | if (rc == IO_OK) |
1769 | memcpy(serial_no, &buf[8], buflen); | |
1770 | kfree(buf); | |
1771 | return; | |
1772 | } | |
1773 | ||
617e1344 SC |
1774 | /* |
1775 | * cciss_add_disk sets up the block device queue for a logical drive | |
1776 | */ | |
1777 | static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, | |
6ae5ce8e MM |
1778 | int drv_index) |
1779 | { | |
1780 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); | |
e8074f79 SC |
1781 | if (!disk->queue) |
1782 | goto init_queue_failure; | |
6ae5ce8e MM |
1783 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); |
1784 | disk->major = h->major; | |
1785 | disk->first_minor = drv_index << NWD_SHIFT; | |
1786 | disk->fops = &cciss_fops; | |
9cef0d2f SC |
1787 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
1788 | goto cleanup_queue; | |
1789 | disk->private_data = h->drv[drv_index]; | |
1790 | disk->driverfs_dev = &h->drv[drv_index]->dev; | |
6ae5ce8e MM |
1791 | |
1792 | /* Set up queue information */ | |
1793 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); | |
1794 | ||
1795 | /* This is a hardware imposed limit. */ | |
1796 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); | |
1797 | ||
1798 | /* This is a limit in the driver and could be eliminated. */ | |
1799 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); | |
1800 | ||
1801 | blk_queue_max_sectors(disk->queue, h->cciss_max_sectors); | |
1802 | ||
1803 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); | |
1804 | ||
1805 | disk->queue->queuedata = h; | |
1806 | ||
e1defc4f | 1807 | blk_queue_logical_block_size(disk->queue, |
9cef0d2f | 1808 | h->drv[drv_index]->block_size); |
6ae5ce8e MM |
1809 | |
1810 | /* Make sure all queue data is written out before */ | |
9cef0d2f | 1811 | /* setting h->drv[drv_index]->queue, as setting this */ |
6ae5ce8e MM |
1812 | /* allows the interrupt handler to start the queue */ |
1813 | wmb(); | |
9cef0d2f | 1814 | h->drv[drv_index]->queue = disk->queue; |
6ae5ce8e | 1815 | add_disk(disk); |
617e1344 SC |
1816 | return 0; |
1817 | ||
1818 | cleanup_queue: | |
1819 | blk_cleanup_queue(disk->queue); | |
1820 | disk->queue = NULL; | |
e8074f79 | 1821 | init_queue_failure: |
617e1344 | 1822 | return -1; |
6ae5ce8e MM |
1823 | } |
1824 | ||
ddd47442 | 1825 | /* This function will check the usage_count of the drive to be updated/added. |
a72da29b MM |
1826 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
1827 | * the drive's capacity, geometry, or serial number has changed, | |
1828 | * then the drive information will be updated and the disk will be | |
1829 | * re-registered with the kernel. If these conditions don't hold, | |
1830 | * then it will be left alone for the next reboot. The exception to this | |
1831 | * is disk 0 which will always be left registered with the kernel since it | |
1832 | * is also the controller node. Any changes to disk 0 will show up on | |
1833 | * the next reboot. | |
7c832835 | 1834 | */ |
2d11d993 SC |
1835 | static void cciss_update_drive_info(int ctlr, int drv_index, int first_time, |
1836 | int via_ioctl) | |
7c832835 | 1837 | { |
ddd47442 MM |
1838 | ctlr_info_t *h = hba[ctlr]; |
1839 | struct gendisk *disk; | |
ddd47442 MM |
1840 | InquiryData_struct *inq_buff = NULL; |
1841 | unsigned int block_size; | |
00988a35 | 1842 | sector_t total_size; |
ddd47442 MM |
1843 | unsigned long flags = 0; |
1844 | int ret = 0; | |
a72da29b MM |
1845 | drive_info_struct *drvinfo; |
1846 | ||
1847 | /* Get information about the disk and modify the driver structure */ | |
1848 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
9cef0d2f | 1849 | drvinfo = kzalloc(sizeof(*drvinfo), GFP_KERNEL); |
a72da29b MM |
1850 | if (inq_buff == NULL || drvinfo == NULL) |
1851 | goto mem_msg; | |
1852 | ||
1853 | /* testing to see if 16-byte CDBs are already being used */ | |
1854 | if (h->cciss_read == CCISS_READ_16) { | |
1855 | cciss_read_capacity_16(h->ctlr, drv_index, 1, | |
1856 | &total_size, &block_size); | |
1857 | ||
1858 | } else { | |
1859 | cciss_read_capacity(ctlr, drv_index, 1, | |
1860 | &total_size, &block_size); | |
1861 | ||
1862 | /* if read_capacity returns all F's this volume is >2TB */ | |
1863 | /* in size so we switch to 16-byte CDB's for all */ | |
1864 | /* read/write ops */ | |
1865 | if (total_size == 0xFFFFFFFFULL) { | |
1866 | cciss_read_capacity_16(ctlr, drv_index, 1, | |
1867 | &total_size, &block_size); | |
1868 | h->cciss_read = CCISS_READ_16; | |
1869 | h->cciss_write = CCISS_WRITE_16; | |
1870 | } else { | |
1871 | h->cciss_read = CCISS_READ_10; | |
1872 | h->cciss_write = CCISS_WRITE_10; | |
1873 | } | |
1874 | } | |
1875 | ||
1876 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, | |
1877 | inq_buff, drvinfo); | |
1878 | drvinfo->block_size = block_size; | |
1879 | drvinfo->nr_blocks = total_size + 1; | |
1880 | ||
7fe06326 AP |
1881 | cciss_get_device_descr(ctlr, drv_index, 1, drvinfo->vendor, |
1882 | drvinfo->model, drvinfo->rev); | |
a72da29b MM |
1883 | cciss_get_serial_no(ctlr, drv_index, 1, drvinfo->serial_no, |
1884 | sizeof(drvinfo->serial_no)); | |
9cef0d2f SC |
1885 | /* Save the lunid in case we deregister the disk, below. */ |
1886 | memcpy(drvinfo->LunID, h->drv[drv_index]->LunID, | |
1887 | sizeof(drvinfo->LunID)); | |
a72da29b MM |
1888 | |
1889 | /* Is it the same disk we already know, and nothing's changed? */ | |
9cef0d2f | 1890 | if (h->drv[drv_index]->raid_level != -1 && |
a72da29b | 1891 | ((memcmp(drvinfo->serial_no, |
9cef0d2f SC |
1892 | h->drv[drv_index]->serial_no, 16) == 0) && |
1893 | drvinfo->block_size == h->drv[drv_index]->block_size && | |
1894 | drvinfo->nr_blocks == h->drv[drv_index]->nr_blocks && | |
1895 | drvinfo->heads == h->drv[drv_index]->heads && | |
1896 | drvinfo->sectors == h->drv[drv_index]->sectors && | |
1897 | drvinfo->cylinders == h->drv[drv_index]->cylinders)) | |
a72da29b MM |
1898 | /* The disk is unchanged, nothing to update */ |
1899 | goto freeret; | |
a72da29b | 1900 | |
6ae5ce8e MM |
1901 | /* If we get here it's not the same disk, or something's changed, |
1902 | * so we need to * deregister it, and re-register it, if it's not | |
1903 | * in use. | |
1904 | * If the disk already exists then deregister it before proceeding | |
1905 | * (unless it's the first disk (for the controller node). | |
1906 | */ | |
9cef0d2f | 1907 | if (h->drv[drv_index]->raid_level != -1 && drv_index != 0) { |
a72da29b | 1908 | printk(KERN_WARNING "disk %d has changed.\n", drv_index); |
ddd47442 | 1909 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
9cef0d2f | 1910 | h->drv[drv_index]->busy_configuring = 1; |
ddd47442 | 1911 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
e14ac670 | 1912 | |
9cef0d2f | 1913 | /* deregister_disk sets h->drv[drv_index]->queue = NULL |
6ae5ce8e MM |
1914 | * which keeps the interrupt handler from starting |
1915 | * the queue. | |
1916 | */ | |
2d11d993 | 1917 | ret = deregister_disk(h, drv_index, 0, via_ioctl); |
ddd47442 MM |
1918 | } |
1919 | ||
1920 | /* If the disk is in use return */ | |
1921 | if (ret) | |
a72da29b MM |
1922 | goto freeret; |
1923 | ||
6ae5ce8e | 1924 | /* Save the new information from cciss_geometry_inquiry |
9cef0d2f SC |
1925 | * and serial number inquiry. If the disk was deregistered |
1926 | * above, then h->drv[drv_index] will be NULL. | |
6ae5ce8e | 1927 | */ |
9cef0d2f SC |
1928 | if (h->drv[drv_index] == NULL) { |
1929 | drvinfo->device_initialized = 0; | |
1930 | h->drv[drv_index] = drvinfo; | |
1931 | drvinfo = NULL; /* so it won't be freed below. */ | |
1932 | } else { | |
1933 | /* special case for cxd0 */ | |
1934 | h->drv[drv_index]->block_size = drvinfo->block_size; | |
1935 | h->drv[drv_index]->nr_blocks = drvinfo->nr_blocks; | |
1936 | h->drv[drv_index]->heads = drvinfo->heads; | |
1937 | h->drv[drv_index]->sectors = drvinfo->sectors; | |
1938 | h->drv[drv_index]->cylinders = drvinfo->cylinders; | |
1939 | h->drv[drv_index]->raid_level = drvinfo->raid_level; | |
1940 | memcpy(h->drv[drv_index]->serial_no, drvinfo->serial_no, 16); | |
1941 | memcpy(h->drv[drv_index]->vendor, drvinfo->vendor, | |
1942 | VENDOR_LEN + 1); | |
1943 | memcpy(h->drv[drv_index]->model, drvinfo->model, MODEL_LEN + 1); | |
1944 | memcpy(h->drv[drv_index]->rev, drvinfo->rev, REV_LEN + 1); | |
1945 | } | |
ddd47442 MM |
1946 | |
1947 | ++h->num_luns; | |
1948 | disk = h->gendisk[drv_index]; | |
9cef0d2f | 1949 | set_capacity(disk, h->drv[drv_index]->nr_blocks); |
ddd47442 | 1950 | |
6ae5ce8e MM |
1951 | /* If it's not disk 0 (drv_index != 0) |
1952 | * or if it was disk 0, but there was previously | |
1953 | * no actual corresponding configured logical drive | |
1954 | * (raid_leve == -1) then we want to update the | |
1955 | * logical drive's information. | |
1956 | */ | |
361e9b07 SC |
1957 | if (drv_index || first_time) { |
1958 | if (cciss_add_disk(h, disk, drv_index) != 0) { | |
1959 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 1960 | cciss_free_drive_info(h, drv_index); |
361e9b07 SC |
1961 | printk(KERN_WARNING "cciss:%d could not update " |
1962 | "disk %d\n", h->ctlr, drv_index); | |
1963 | --h->num_luns; | |
1964 | } | |
1965 | } | |
ddd47442 | 1966 | |
6ae5ce8e | 1967 | freeret: |
ddd47442 | 1968 | kfree(inq_buff); |
a72da29b | 1969 | kfree(drvinfo); |
ddd47442 | 1970 | return; |
6ae5ce8e | 1971 | mem_msg: |
ddd47442 MM |
1972 | printk(KERN_ERR "cciss: out of memory\n"); |
1973 | goto freeret; | |
1974 | } | |
1975 | ||
1976 | /* This function will find the first index of the controllers drive array | |
9cef0d2f SC |
1977 | * that has a null drv pointer and allocate the drive info struct and |
1978 | * will return that index This is where new drives will be added. | |
1979 | * If the index to be returned is greater than the highest_lun index for | |
1980 | * the controller then highest_lun is set * to this new index. | |
1981 | * If there are no available indexes or if tha allocation fails, then -1 | |
1982 | * is returned. * "controller_node" is used to know if this is a real | |
1983 | * logical drive, or just the controller node, which determines if this | |
1984 | * counts towards highest_lun. | |
7c832835 | 1985 | */ |
9cef0d2f | 1986 | static int cciss_alloc_drive_info(ctlr_info_t *h, int controller_node) |
ddd47442 MM |
1987 | { |
1988 | int i; | |
9cef0d2f | 1989 | drive_info_struct *drv; |
ddd47442 | 1990 | |
9cef0d2f | 1991 | /* Search for an empty slot for our drive info */ |
7c832835 | 1992 | for (i = 0; i < CISS_MAX_LUN; i++) { |
9cef0d2f SC |
1993 | |
1994 | /* if not cxd0 case, and it's occupied, skip it. */ | |
1995 | if (h->drv[i] && i != 0) | |
1996 | continue; | |
1997 | /* | |
1998 | * If it's cxd0 case, and drv is alloc'ed already, and a | |
1999 | * disk is configured there, skip it. | |
2000 | */ | |
2001 | if (i == 0 && h->drv[i] && h->drv[i]->raid_level != -1) | |
2002 | continue; | |
2003 | ||
2004 | /* | |
2005 | * We've found an empty slot. Update highest_lun | |
2006 | * provided this isn't just the fake cxd0 controller node. | |
2007 | */ | |
2008 | if (i > h->highest_lun && !controller_node) | |
2009 | h->highest_lun = i; | |
2010 | ||
2011 | /* If adding a real disk at cxd0, and it's already alloc'ed */ | |
2012 | if (i == 0 && h->drv[i] != NULL) | |
ddd47442 | 2013 | return i; |
9cef0d2f SC |
2014 | |
2015 | /* | |
2016 | * Found an empty slot, not already alloc'ed. Allocate it. | |
2017 | * Mark it with raid_level == -1, so we know it's new later on. | |
2018 | */ | |
2019 | drv = kzalloc(sizeof(*drv), GFP_KERNEL); | |
2020 | if (!drv) | |
2021 | return -1; | |
2022 | drv->raid_level = -1; /* so we know it's new */ | |
2023 | h->drv[i] = drv; | |
2024 | return i; | |
ddd47442 MM |
2025 | } |
2026 | return -1; | |
2027 | } | |
2028 | ||
9cef0d2f SC |
2029 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index) |
2030 | { | |
2031 | kfree(h->drv[drv_index]); | |
2032 | h->drv[drv_index] = NULL; | |
2033 | } | |
2034 | ||
361e9b07 SC |
2035 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index) |
2036 | { | |
2037 | put_disk(h->gendisk[drv_index]); | |
2038 | h->gendisk[drv_index] = NULL; | |
2039 | } | |
2040 | ||
6ae5ce8e MM |
2041 | /* cciss_add_gendisk finds a free hba[]->drv structure |
2042 | * and allocates a gendisk if needed, and sets the lunid | |
2043 | * in the drvinfo structure. It returns the index into | |
2044 | * the ->drv[] array, or -1 if none are free. | |
2045 | * is_controller_node indicates whether highest_lun should | |
2046 | * count this disk, or if it's only being added to provide | |
2047 | * a means to talk to the controller in case no logical | |
2048 | * drives have yet been configured. | |
2049 | */ | |
39ccf9a6 SC |
2050 | static int cciss_add_gendisk(ctlr_info_t *h, unsigned char lunid[], |
2051 | int controller_node) | |
6ae5ce8e MM |
2052 | { |
2053 | int drv_index; | |
2054 | ||
9cef0d2f | 2055 | drv_index = cciss_alloc_drive_info(h, controller_node); |
6ae5ce8e MM |
2056 | if (drv_index == -1) |
2057 | return -1; | |
8ce51966 | 2058 | |
6ae5ce8e MM |
2059 | /*Check if the gendisk needs to be allocated */ |
2060 | if (!h->gendisk[drv_index]) { | |
2061 | h->gendisk[drv_index] = | |
2062 | alloc_disk(1 << NWD_SHIFT); | |
2063 | if (!h->gendisk[drv_index]) { | |
2064 | printk(KERN_ERR "cciss%d: could not " | |
2065 | "allocate a new disk %d\n", | |
2066 | h->ctlr, drv_index); | |
9cef0d2f | 2067 | goto err_free_drive_info; |
6ae5ce8e MM |
2068 | } |
2069 | } | |
9cef0d2f SC |
2070 | memcpy(h->drv[drv_index]->LunID, lunid, |
2071 | sizeof(h->drv[drv_index]->LunID)); | |
2072 | if (cciss_create_ld_sysfs_entry(h, drv_index)) | |
7fe06326 | 2073 | goto err_free_disk; |
6ae5ce8e MM |
2074 | /* Don't need to mark this busy because nobody */ |
2075 | /* else knows about this disk yet to contend */ | |
2076 | /* for access to it. */ | |
9cef0d2f | 2077 | h->drv[drv_index]->busy_configuring = 0; |
6ae5ce8e MM |
2078 | wmb(); |
2079 | return drv_index; | |
7fe06326 AP |
2080 | |
2081 | err_free_disk: | |
361e9b07 | 2082 | cciss_free_gendisk(h, drv_index); |
9cef0d2f SC |
2083 | err_free_drive_info: |
2084 | cciss_free_drive_info(h, drv_index); | |
7fe06326 | 2085 | return -1; |
6ae5ce8e MM |
2086 | } |
2087 | ||
2088 | /* This is for the special case of a controller which | |
2089 | * has no logical drives. In this case, we still need | |
2090 | * to register a disk so the controller can be accessed | |
2091 | * by the Array Config Utility. | |
2092 | */ | |
2093 | static void cciss_add_controller_node(ctlr_info_t *h) | |
2094 | { | |
2095 | struct gendisk *disk; | |
2096 | int drv_index; | |
2097 | ||
2098 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ | |
2099 | return; | |
2100 | ||
39ccf9a6 | 2101 | drv_index = cciss_add_gendisk(h, CTLR_LUNID, 1); |
361e9b07 SC |
2102 | if (drv_index == -1) |
2103 | goto error; | |
9cef0d2f SC |
2104 | h->drv[drv_index]->block_size = 512; |
2105 | h->drv[drv_index]->nr_blocks = 0; | |
2106 | h->drv[drv_index]->heads = 0; | |
2107 | h->drv[drv_index]->sectors = 0; | |
2108 | h->drv[drv_index]->cylinders = 0; | |
2109 | h->drv[drv_index]->raid_level = -1; | |
2110 | memset(h->drv[drv_index]->serial_no, 0, 16); | |
6ae5ce8e | 2111 | disk = h->gendisk[drv_index]; |
361e9b07 SC |
2112 | if (cciss_add_disk(h, disk, drv_index) == 0) |
2113 | return; | |
2114 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 2115 | cciss_free_drive_info(h, drv_index); |
361e9b07 SC |
2116 | error: |
2117 | printk(KERN_WARNING "cciss%d: could not " | |
2118 | "add disk 0.\n", h->ctlr); | |
2119 | return; | |
6ae5ce8e MM |
2120 | } |
2121 | ||
ddd47442 | 2122 | /* This function will add and remove logical drives from the Logical |
d14c4ab5 | 2123 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
2124 | * so that mount points are preserved until the next reboot. This allows |
2125 | * for the removal of logical drives in the middle of the drive array | |
2126 | * without a re-ordering of those drives. | |
2127 | * INPUT | |
2128 | * h = The controller to perform the operations on | |
7c832835 | 2129 | */ |
2d11d993 SC |
2130 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, |
2131 | int via_ioctl) | |
1da177e4 | 2132 | { |
ddd47442 MM |
2133 | int ctlr = h->ctlr; |
2134 | int num_luns; | |
2135 | ReportLunData_struct *ld_buff = NULL; | |
ddd47442 MM |
2136 | int return_code; |
2137 | int listlength = 0; | |
2138 | int i; | |
2139 | int drv_found; | |
2140 | int drv_index = 0; | |
39ccf9a6 | 2141 | unsigned char lunid[8] = CTLR_LUNID; |
1da177e4 | 2142 | unsigned long flags; |
ddd47442 | 2143 | |
6ae5ce8e MM |
2144 | if (!capable(CAP_SYS_RAWIO)) |
2145 | return -EPERM; | |
2146 | ||
ddd47442 MM |
2147 | /* Set busy_configuring flag for this operation */ |
2148 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 2149 | if (h->busy_configuring) { |
ddd47442 MM |
2150 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2151 | return -EBUSY; | |
2152 | } | |
2153 | h->busy_configuring = 1; | |
a72da29b | 2154 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
ddd47442 | 2155 | |
a72da29b MM |
2156 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
2157 | if (ld_buff == NULL) | |
2158 | goto mem_msg; | |
2159 | ||
2160 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
b57695fe | 2161 | sizeof(ReportLunData_struct), |
2162 | 0, CTLR_LUNID, TYPE_CMD); | |
ddd47442 | 2163 | |
a72da29b MM |
2164 | if (return_code == IO_OK) |
2165 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); | |
2166 | else { /* reading number of logical volumes failed */ | |
2167 | printk(KERN_WARNING "cciss: report logical volume" | |
2168 | " command failed\n"); | |
2169 | listlength = 0; | |
2170 | goto freeret; | |
2171 | } | |
2172 | ||
2173 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
2174 | if (num_luns > CISS_MAX_LUN) { | |
2175 | num_luns = CISS_MAX_LUN; | |
2176 | printk(KERN_WARNING "cciss: more luns configured" | |
2177 | " on controller than can be handled by" | |
2178 | " this driver.\n"); | |
2179 | } | |
2180 | ||
6ae5ce8e MM |
2181 | if (num_luns == 0) |
2182 | cciss_add_controller_node(h); | |
2183 | ||
2184 | /* Compare controller drive array to driver's drive array | |
2185 | * to see if any drives are missing on the controller due | |
2186 | * to action of Array Config Utility (user deletes drive) | |
2187 | * and deregister logical drives which have disappeared. | |
2188 | */ | |
a72da29b MM |
2189 | for (i = 0; i <= h->highest_lun; i++) { |
2190 | int j; | |
2191 | drv_found = 0; | |
d8a0be6a SC |
2192 | |
2193 | /* skip holes in the array from already deleted drives */ | |
9cef0d2f | 2194 | if (h->drv[i] == NULL) |
d8a0be6a SC |
2195 | continue; |
2196 | ||
a72da29b | 2197 | for (j = 0; j < num_luns; j++) { |
39ccf9a6 | 2198 | memcpy(lunid, &ld_buff->LUN[j][0], sizeof(lunid)); |
9cef0d2f | 2199 | if (memcmp(h->drv[i]->LunID, lunid, |
39ccf9a6 | 2200 | sizeof(lunid)) == 0) { |
a72da29b MM |
2201 | drv_found = 1; |
2202 | break; | |
2203 | } | |
2204 | } | |
2205 | if (!drv_found) { | |
2206 | /* Deregister it from the OS, it's gone. */ | |
2207 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
9cef0d2f | 2208 | h->drv[i]->busy_configuring = 1; |
a72da29b | 2209 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2d11d993 | 2210 | return_code = deregister_disk(h, i, 1, via_ioctl); |
9cef0d2f SC |
2211 | if (h->drv[i] != NULL) |
2212 | h->drv[i]->busy_configuring = 0; | |
ddd47442 | 2213 | } |
a72da29b | 2214 | } |
ddd47442 | 2215 | |
a72da29b MM |
2216 | /* Compare controller drive array to driver's drive array. |
2217 | * Check for updates in the drive information and any new drives | |
2218 | * on the controller due to ACU adding logical drives, or changing | |
2219 | * a logical drive's size, etc. Reregister any new/changed drives | |
2220 | */ | |
2221 | for (i = 0; i < num_luns; i++) { | |
2222 | int j; | |
ddd47442 | 2223 | |
a72da29b | 2224 | drv_found = 0; |
ddd47442 | 2225 | |
39ccf9a6 | 2226 | memcpy(lunid, &ld_buff->LUN[i][0], sizeof(lunid)); |
a72da29b MM |
2227 | /* Find if the LUN is already in the drive array |
2228 | * of the driver. If so then update its info | |
2229 | * if not in use. If it does not exist then find | |
2230 | * the first free index and add it. | |
2231 | */ | |
2232 | for (j = 0; j <= h->highest_lun; j++) { | |
9cef0d2f SC |
2233 | if (h->drv[j] != NULL && |
2234 | memcmp(h->drv[j]->LunID, lunid, | |
2235 | sizeof(h->drv[j]->LunID)) == 0) { | |
a72da29b MM |
2236 | drv_index = j; |
2237 | drv_found = 1; | |
2238 | break; | |
ddd47442 | 2239 | } |
a72da29b | 2240 | } |
ddd47442 | 2241 | |
a72da29b MM |
2242 | /* check if the drive was found already in the array */ |
2243 | if (!drv_found) { | |
eece695f | 2244 | drv_index = cciss_add_gendisk(h, lunid, 0); |
a72da29b MM |
2245 | if (drv_index == -1) |
2246 | goto freeret; | |
a72da29b | 2247 | } |
2d11d993 SC |
2248 | cciss_update_drive_info(ctlr, drv_index, first_time, |
2249 | via_ioctl); | |
a72da29b | 2250 | } /* end for */ |
ddd47442 | 2251 | |
6ae5ce8e | 2252 | freeret: |
ddd47442 MM |
2253 | kfree(ld_buff); |
2254 | h->busy_configuring = 0; | |
2255 | /* We return -1 here to tell the ACU that we have registered/updated | |
2256 | * all of the drives that we can and to keep it from calling us | |
2257 | * additional times. | |
7c832835 | 2258 | */ |
ddd47442 | 2259 | return -1; |
6ae5ce8e | 2260 | mem_msg: |
ddd47442 | 2261 | printk(KERN_ERR "cciss: out of memory\n"); |
a72da29b | 2262 | h->busy_configuring = 0; |
ddd47442 MM |
2263 | goto freeret; |
2264 | } | |
2265 | ||
9ddb27b4 SC |
2266 | static void cciss_clear_drive_info(drive_info_struct *drive_info) |
2267 | { | |
2268 | /* zero out the disk size info */ | |
2269 | drive_info->nr_blocks = 0; | |
2270 | drive_info->block_size = 0; | |
2271 | drive_info->heads = 0; | |
2272 | drive_info->sectors = 0; | |
2273 | drive_info->cylinders = 0; | |
2274 | drive_info->raid_level = -1; | |
2275 | memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no)); | |
2276 | memset(drive_info->model, 0, sizeof(drive_info->model)); | |
2277 | memset(drive_info->rev, 0, sizeof(drive_info->rev)); | |
2278 | memset(drive_info->vendor, 0, sizeof(drive_info->vendor)); | |
2279 | /* | |
2280 | * don't clear the LUNID though, we need to remember which | |
2281 | * one this one is. | |
2282 | */ | |
2283 | } | |
2284 | ||
ddd47442 MM |
2285 | /* This function will deregister the disk and it's queue from the |
2286 | * kernel. It must be called with the controller lock held and the | |
2287 | * drv structures busy_configuring flag set. It's parameters are: | |
2288 | * | |
2289 | * disk = This is the disk to be deregistered | |
2290 | * drv = This is the drive_info_struct associated with the disk to be | |
2291 | * deregistered. It contains information about the disk used | |
2292 | * by the driver. | |
2293 | * clear_all = This flag determines whether or not the disk information | |
2294 | * is going to be completely cleared out and the highest_lun | |
2295 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 2296 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
2297 | * the highest_lun should be left unchanged and the LunID |
2298 | * should not be cleared. | |
2d11d993 SC |
2299 | * via_ioctl |
2300 | * This indicates whether we've reached this path via ioctl. | |
2301 | * This affects the maximum usage count allowed for c0d0 to be messed with. | |
2302 | * If this path is reached via ioctl(), then the max_usage_count will | |
2303 | * be 1, as the process calling ioctl() has got to have the device open. | |
2304 | * If we get here via sysfs, then the max usage count will be zero. | |
ddd47442 | 2305 | */ |
a0ea8622 | 2306 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
2d11d993 | 2307 | int clear_all, int via_ioctl) |
ddd47442 | 2308 | { |
799202cb | 2309 | int i; |
a0ea8622 SC |
2310 | struct gendisk *disk; |
2311 | drive_info_struct *drv; | |
9cef0d2f | 2312 | int recalculate_highest_lun; |
1da177e4 LT |
2313 | |
2314 | if (!capable(CAP_SYS_RAWIO)) | |
2315 | return -EPERM; | |
2316 | ||
9cef0d2f | 2317 | drv = h->drv[drv_index]; |
a0ea8622 SC |
2318 | disk = h->gendisk[drv_index]; |
2319 | ||
1da177e4 | 2320 | /* make sure logical volume is NOT is use */ |
7c832835 | 2321 | if (clear_all || (h->gendisk[0] == disk)) { |
2d11d993 | 2322 | if (drv->usage_count > via_ioctl) |
7c832835 BH |
2323 | return -EBUSY; |
2324 | } else if (drv->usage_count > 0) | |
2325 | return -EBUSY; | |
1da177e4 | 2326 | |
9cef0d2f SC |
2327 | recalculate_highest_lun = (drv == h->drv[h->highest_lun]); |
2328 | ||
ddd47442 MM |
2329 | /* invalidate the devices and deregister the disk. If it is disk |
2330 | * zero do not deregister it but just zero out it's values. This | |
2331 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
2332 | */ |
2333 | if (h->gendisk[0] != disk) { | |
5a9df732 | 2334 | struct request_queue *q = disk->queue; |
097d0264 | 2335 | if (disk->flags & GENHD_FL_UP) { |
8ce51966 | 2336 | cciss_destroy_ld_sysfs_entry(h, drv_index, 0); |
5a9df732 | 2337 | del_gendisk(disk); |
5a9df732 | 2338 | } |
9cef0d2f | 2339 | if (q) |
5a9df732 | 2340 | blk_cleanup_queue(q); |
5a9df732 AB |
2341 | /* If clear_all is set then we are deleting the logical |
2342 | * drive, not just refreshing its info. For drives | |
2343 | * other than disk 0 we will call put_disk. We do not | |
2344 | * do this for disk 0 as we need it to be able to | |
2345 | * configure the controller. | |
a72da29b | 2346 | */ |
5a9df732 AB |
2347 | if (clear_all){ |
2348 | /* This isn't pretty, but we need to find the | |
2349 | * disk in our array and NULL our the pointer. | |
2350 | * This is so that we will call alloc_disk if | |
2351 | * this index is used again later. | |
a72da29b | 2352 | */ |
5a9df732 | 2353 | for (i=0; i < CISS_MAX_LUN; i++){ |
a72da29b | 2354 | if (h->gendisk[i] == disk) { |
5a9df732 AB |
2355 | h->gendisk[i] = NULL; |
2356 | break; | |
799202cb | 2357 | } |
799202cb | 2358 | } |
5a9df732 | 2359 | put_disk(disk); |
ddd47442 | 2360 | } |
799202cb MM |
2361 | } else { |
2362 | set_capacity(disk, 0); | |
9cef0d2f | 2363 | cciss_clear_drive_info(drv); |
ddd47442 MM |
2364 | } |
2365 | ||
2366 | --h->num_luns; | |
ddd47442 | 2367 | |
9cef0d2f SC |
2368 | /* if it was the last disk, find the new hightest lun */ |
2369 | if (clear_all && recalculate_highest_lun) { | |
2370 | int i, newhighest = -1; | |
2371 | for (i = 0; i <= h->highest_lun; i++) { | |
2372 | /* if the disk has size > 0, it is available */ | |
2373 | if (h->drv[i] && h->drv[i]->heads) | |
2374 | newhighest = i; | |
1da177e4 | 2375 | } |
9cef0d2f | 2376 | h->highest_lun = newhighest; |
ddd47442 | 2377 | } |
e2019b58 | 2378 | return 0; |
1da177e4 | 2379 | } |
ddd47442 | 2380 | |
b57695fe | 2381 | static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, |
2382 | size_t size, __u8 page_code, unsigned char *scsi3addr, | |
2383 | int cmd_type) | |
1da177e4 | 2384 | { |
7c832835 | 2385 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
2386 | u64bit buff_dma_handle; |
2387 | int status = IO_OK; | |
2388 | ||
2389 | c->cmd_type = CMD_IOCTL_PEND; | |
2390 | c->Header.ReplyQueue = 0; | |
7c832835 | 2391 | if (buff != NULL) { |
1da177e4 | 2392 | c->Header.SGList = 1; |
7c832835 | 2393 | c->Header.SGTotal = 1; |
1da177e4 LT |
2394 | } else { |
2395 | c->Header.SGList = 0; | |
7c832835 | 2396 | c->Header.SGTotal = 0; |
1da177e4 LT |
2397 | } |
2398 | c->Header.Tag.lower = c->busaddr; | |
b57695fe | 2399 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
1da177e4 LT |
2400 | |
2401 | c->Request.Type.Type = cmd_type; | |
2402 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
2403 | switch (cmd) { |
2404 | case CISS_INQUIRY: | |
1da177e4 | 2405 | /* are we trying to read a vital product page */ |
7c832835 | 2406 | if (page_code != 0) { |
1da177e4 LT |
2407 | c->Request.CDB[1] = 0x01; |
2408 | c->Request.CDB[2] = page_code; | |
2409 | } | |
2410 | c->Request.CDBLen = 6; | |
7c832835 | 2411 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
2412 | c->Request.Type.Direction = XFER_READ; |
2413 | c->Request.Timeout = 0; | |
7c832835 BH |
2414 | c->Request.CDB[0] = CISS_INQUIRY; |
2415 | c->Request.CDB[4] = size & 0xFF; | |
2416 | break; | |
1da177e4 LT |
2417 | case CISS_REPORT_LOG: |
2418 | case CISS_REPORT_PHYS: | |
7c832835 | 2419 | /* Talking to controller so It's a physical command |
1da177e4 | 2420 | mode = 00 target = 0. Nothing to write. |
7c832835 | 2421 | */ |
1da177e4 LT |
2422 | c->Request.CDBLen = 12; |
2423 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2424 | c->Request.Type.Direction = XFER_READ; | |
2425 | c->Request.Timeout = 0; | |
2426 | c->Request.CDB[0] = cmd; | |
7c832835 | 2427 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
1da177e4 LT |
2428 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
2429 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
2430 | c->Request.CDB[9] = size & 0xFF; | |
2431 | break; | |
2432 | ||
2433 | case CCISS_READ_CAPACITY: | |
1da177e4 LT |
2434 | c->Request.CDBLen = 10; |
2435 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2436 | c->Request.Type.Direction = XFER_READ; | |
2437 | c->Request.Timeout = 0; | |
2438 | c->Request.CDB[0] = cmd; | |
7c832835 | 2439 | break; |
00988a35 | 2440 | case CCISS_READ_CAPACITY_16: |
00988a35 MMOD |
2441 | c->Request.CDBLen = 16; |
2442 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2443 | c->Request.Type.Direction = XFER_READ; | |
2444 | c->Request.Timeout = 0; | |
2445 | c->Request.CDB[0] = cmd; | |
2446 | c->Request.CDB[1] = 0x10; | |
2447 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
2448 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
2449 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
2450 | c->Request.CDB[13] = size & 0xFF; | |
2451 | c->Request.Timeout = 0; | |
2452 | c->Request.CDB[0] = cmd; | |
2453 | break; | |
1da177e4 LT |
2454 | case CCISS_CACHE_FLUSH: |
2455 | c->Request.CDBLen = 12; | |
2456 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2457 | c->Request.Type.Direction = XFER_WRITE; | |
2458 | c->Request.Timeout = 0; | |
2459 | c->Request.CDB[0] = BMIC_WRITE; | |
2460 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 2461 | break; |
88f627ae | 2462 | case TEST_UNIT_READY: |
88f627ae SC |
2463 | c->Request.CDBLen = 6; |
2464 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2465 | c->Request.Type.Direction = XFER_NONE; | |
2466 | c->Request.Timeout = 0; | |
2467 | break; | |
1da177e4 LT |
2468 | default: |
2469 | printk(KERN_WARNING | |
7c832835 | 2470 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 2471 | return IO_ERROR; |
1da177e4 LT |
2472 | } |
2473 | } else if (cmd_type == TYPE_MSG) { | |
2474 | switch (cmd) { | |
7c832835 | 2475 | case 0: /* ABORT message */ |
3da8b713 | 2476 | c->Request.CDBLen = 12; |
2477 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2478 | c->Request.Type.Direction = XFER_WRITE; | |
2479 | c->Request.Timeout = 0; | |
7c832835 BH |
2480 | c->Request.CDB[0] = cmd; /* abort */ |
2481 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 2482 | /* buff contains the tag of the command to abort */ |
2483 | memcpy(&c->Request.CDB[4], buff, 8); | |
2484 | break; | |
7c832835 | 2485 | case 1: /* RESET message */ |
88f627ae | 2486 | c->Request.CDBLen = 16; |
3da8b713 | 2487 | c->Request.Type.Attribute = ATTR_SIMPLE; |
88f627ae | 2488 | c->Request.Type.Direction = XFER_NONE; |
3da8b713 | 2489 | c->Request.Timeout = 0; |
2490 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 | 2491 | c->Request.CDB[0] = cmd; /* reset */ |
88f627ae | 2492 | c->Request.CDB[1] = 0x03; /* reset a target */ |
00988a35 | 2493 | break; |
1da177e4 LT |
2494 | case 3: /* No-Op message */ |
2495 | c->Request.CDBLen = 1; | |
2496 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2497 | c->Request.Type.Direction = XFER_WRITE; | |
2498 | c->Request.Timeout = 0; | |
2499 | c->Request.CDB[0] = cmd; | |
2500 | break; | |
2501 | default: | |
2502 | printk(KERN_WARNING | |
7c832835 | 2503 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
2504 | return IO_ERROR; |
2505 | } | |
2506 | } else { | |
2507 | printk(KERN_WARNING | |
7c832835 | 2508 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
2509 | return IO_ERROR; |
2510 | } | |
2511 | /* Fill in the scatter gather information */ | |
2512 | if (size > 0) { | |
2513 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
2514 | buff, size, |
2515 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
2516 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
2517 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
2518 | c->SG[0].Len = size; | |
7c832835 | 2519 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
2520 | } |
2521 | return status; | |
2522 | } | |
7c832835 | 2523 | |
3c2ab402 | 2524 | static int check_target_status(ctlr_info_t *h, CommandList_struct *c) |
2525 | { | |
2526 | switch (c->err_info->ScsiStatus) { | |
2527 | case SAM_STAT_GOOD: | |
2528 | return IO_OK; | |
2529 | case SAM_STAT_CHECK_CONDITION: | |
2530 | switch (0xf & c->err_info->SenseInfo[2]) { | |
2531 | case 0: return IO_OK; /* no sense */ | |
2532 | case 1: return IO_OK; /* recovered error */ | |
2533 | default: | |
2534 | printk(KERN_WARNING "cciss%d: cmd 0x%02x " | |
2535 | "check condition, sense key = 0x%02x\n", | |
2536 | h->ctlr, c->Request.CDB[0], | |
2537 | c->err_info->SenseInfo[2]); | |
2538 | } | |
2539 | break; | |
2540 | default: | |
2541 | printk(KERN_WARNING "cciss%d: cmd 0x%02x" | |
2542 | "scsi status = 0x%02x\n", h->ctlr, | |
2543 | c->Request.CDB[0], c->err_info->ScsiStatus); | |
2544 | break; | |
2545 | } | |
2546 | return IO_ERROR; | |
2547 | } | |
2548 | ||
789a424a | 2549 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 | 2550 | { |
5390cfc3 | 2551 | int return_status = IO_OK; |
7c832835 | 2552 | |
789a424a | 2553 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
2554 | return IO_OK; | |
5390cfc3 | 2555 | |
2556 | switch (c->err_info->CommandStatus) { | |
2557 | case CMD_TARGET_STATUS: | |
3c2ab402 | 2558 | return_status = check_target_status(h, c); |
5390cfc3 | 2559 | break; |
2560 | case CMD_DATA_UNDERRUN: | |
2561 | case CMD_DATA_OVERRUN: | |
2562 | /* expected for inquiry and report lun commands */ | |
2563 | break; | |
2564 | case CMD_INVALID: | |
789a424a | 2565 | printk(KERN_WARNING "cciss: cmd 0x%02x is " |
5390cfc3 | 2566 | "reported invalid\n", c->Request.CDB[0]); |
2567 | return_status = IO_ERROR; | |
2568 | break; | |
2569 | case CMD_PROTOCOL_ERR: | |
2570 | printk(KERN_WARNING "cciss: cmd 0x%02x has " | |
2571 | "protocol error \n", c->Request.CDB[0]); | |
2572 | return_status = IO_ERROR; | |
2573 | break; | |
2574 | case CMD_HARDWARE_ERR: | |
2575 | printk(KERN_WARNING "cciss: cmd 0x%02x had " | |
2576 | " hardware error\n", c->Request.CDB[0]); | |
2577 | return_status = IO_ERROR; | |
2578 | break; | |
2579 | case CMD_CONNECTION_LOST: | |
2580 | printk(KERN_WARNING "cciss: cmd 0x%02x had " | |
2581 | "connection lost\n", c->Request.CDB[0]); | |
2582 | return_status = IO_ERROR; | |
2583 | break; | |
2584 | case CMD_ABORTED: | |
2585 | printk(KERN_WARNING "cciss: cmd 0x%02x was " | |
2586 | "aborted\n", c->Request.CDB[0]); | |
2587 | return_status = IO_ERROR; | |
2588 | break; | |
2589 | case CMD_ABORT_FAILED: | |
2590 | printk(KERN_WARNING "cciss: cmd 0x%02x reports " | |
2591 | "abort failed\n", c->Request.CDB[0]); | |
2592 | return_status = IO_ERROR; | |
2593 | break; | |
2594 | case CMD_UNSOLICITED_ABORT: | |
2595 | printk(KERN_WARNING | |
2596 | "cciss%d: unsolicited abort 0x%02x\n", h->ctlr, | |
2597 | c->Request.CDB[0]); | |
789a424a | 2598 | return_status = IO_NEEDS_RETRY; |
5390cfc3 | 2599 | break; |
2600 | default: | |
2601 | printk(KERN_WARNING "cciss: cmd 0x%02x returned " | |
2602 | "unknown status %x\n", c->Request.CDB[0], | |
2603 | c->err_info->CommandStatus); | |
2604 | return_status = IO_ERROR; | |
7c832835 | 2605 | } |
789a424a | 2606 | return return_status; |
2607 | } | |
2608 | ||
2609 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, | |
2610 | int attempt_retry) | |
2611 | { | |
2612 | DECLARE_COMPLETION_ONSTACK(wait); | |
2613 | u64bit buff_dma_handle; | |
2614 | unsigned long flags; | |
2615 | int return_status = IO_OK; | |
2616 | ||
2617 | resend_cmd2: | |
2618 | c->waiting = &wait; | |
2619 | /* Put the request on the tail of the queue and send it */ | |
2620 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
2621 | addQ(&h->reqQ, c); | |
2622 | h->Qdepth++; | |
2623 | start_io(h); | |
2624 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
2625 | ||
2626 | wait_for_completion(&wait); | |
2627 | ||
2628 | if (c->err_info->CommandStatus == 0 || !attempt_retry) | |
2629 | goto command_done; | |
2630 | ||
2631 | return_status = process_sendcmd_error(h, c); | |
2632 | ||
2633 | if (return_status == IO_NEEDS_RETRY && | |
2634 | c->retry_count < MAX_CMD_RETRIES) { | |
2635 | printk(KERN_WARNING "cciss%d: retrying 0x%02x\n", h->ctlr, | |
2636 | c->Request.CDB[0]); | |
2637 | c->retry_count++; | |
2638 | /* erase the old error information */ | |
2639 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2640 | return_status = IO_OK; | |
2641 | INIT_COMPLETION(wait); | |
2642 | goto resend_cmd2; | |
2643 | } | |
5390cfc3 | 2644 | |
2645 | command_done: | |
1da177e4 | 2646 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
2647 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2648 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
2649 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
2650 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
5390cfc3 | 2651 | return return_status; |
2652 | } | |
2653 | ||
b57695fe | 2654 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
2655 | __u8 page_code, unsigned char scsi3addr[], | |
2656 | int cmd_type) | |
5390cfc3 | 2657 | { |
2658 | ctlr_info_t *h = hba[ctlr]; | |
2659 | CommandList_struct *c; | |
2660 | int return_status; | |
2661 | ||
2662 | c = cmd_alloc(h, 0); | |
2663 | if (!c) | |
2664 | return -ENOMEM; | |
b57695fe | 2665 | return_status = fill_cmd(c, cmd, ctlr, buff, size, page_code, |
2666 | scsi3addr, cmd_type); | |
5390cfc3 | 2667 | if (return_status == IO_OK) |
789a424a | 2668 | return_status = sendcmd_withirq_core(h, c, 1); |
2669 | ||
1da177e4 | 2670 | cmd_free(h, c, 0); |
7c832835 | 2671 | return return_status; |
1da177e4 | 2672 | } |
7c832835 | 2673 | |
1da177e4 | 2674 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
00988a35 | 2675 | int withirq, sector_t total_size, |
7c832835 BH |
2676 | unsigned int block_size, |
2677 | InquiryData_struct *inq_buff, | |
2678 | drive_info_struct *drv) | |
1da177e4 LT |
2679 | { |
2680 | int return_code; | |
00988a35 | 2681 | unsigned long t; |
b57695fe | 2682 | unsigned char scsi3addr[8]; |
00988a35 | 2683 | |
1da177e4 | 2684 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
b57695fe | 2685 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
1da177e4 LT |
2686 | if (withirq) |
2687 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, | |
b57695fe | 2688 | inq_buff, sizeof(*inq_buff), |
2689 | 0xC1, scsi3addr, TYPE_CMD); | |
1da177e4 LT |
2690 | else |
2691 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, | |
b57695fe | 2692 | sizeof(*inq_buff), 0xC1, scsi3addr, |
7c832835 | 2693 | TYPE_CMD); |
1da177e4 | 2694 | if (return_code == IO_OK) { |
7c832835 | 2695 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 2696 | printk(KERN_WARNING |
7c832835 BH |
2697 | "cciss: reading geometry failed, volume " |
2698 | "does not support reading geometry\n"); | |
1da177e4 | 2699 | drv->heads = 255; |
7c832835 | 2700 | drv->sectors = 32; // Sectors per track |
7f42d3b8 | 2701 | drv->cylinders = total_size + 1; |
89f97ad1 | 2702 | drv->raid_level = RAID_UNKNOWN; |
1da177e4 | 2703 | } else { |
1da177e4 LT |
2704 | drv->heads = inq_buff->data_byte[6]; |
2705 | drv->sectors = inq_buff->data_byte[7]; | |
2706 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
2707 | drv->cylinders += inq_buff->data_byte[5]; | |
2708 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
2709 | } |
2710 | drv->block_size = block_size; | |
97c06978 | 2711 | drv->nr_blocks = total_size + 1; |
3f7705ea MW |
2712 | t = drv->heads * drv->sectors; |
2713 | if (t > 1) { | |
97c06978 MMOD |
2714 | sector_t real_size = total_size + 1; |
2715 | unsigned long rem = sector_div(real_size, t); | |
3f7705ea | 2716 | if (rem) |
97c06978 MMOD |
2717 | real_size++; |
2718 | drv->cylinders = real_size; | |
1da177e4 | 2719 | } |
7c832835 | 2720 | } else { /* Get geometry failed */ |
1da177e4 LT |
2721 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
2722 | } | |
1da177e4 | 2723 | } |
7c832835 | 2724 | |
1da177e4 | 2725 | static void |
00988a35 | 2726 | cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size, |
7c832835 | 2727 | unsigned int *block_size) |
1da177e4 | 2728 | { |
00988a35 | 2729 | ReadCapdata_struct *buf; |
1da177e4 | 2730 | int return_code; |
b57695fe | 2731 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2732 | |
2733 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); | |
2734 | if (!buf) { | |
00988a35 MMOD |
2735 | printk(KERN_WARNING "cciss: out of memory\n"); |
2736 | return; | |
2737 | } | |
1aebe187 | 2738 | |
b57695fe | 2739 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
1da177e4 LT |
2740 | if (withirq) |
2741 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, | |
00988a35 | 2742 | ctlr, buf, sizeof(ReadCapdata_struct), |
b57695fe | 2743 | 0, scsi3addr, TYPE_CMD); |
1da177e4 LT |
2744 | else |
2745 | return_code = sendcmd(CCISS_READ_CAPACITY, | |
00988a35 | 2746 | ctlr, buf, sizeof(ReadCapdata_struct), |
b57695fe | 2747 | 0, scsi3addr, TYPE_CMD); |
1da177e4 | 2748 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2749 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
2750 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
7c832835 | 2751 | } else { /* read capacity command failed */ |
1da177e4 LT |
2752 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
2753 | *total_size = 0; | |
2754 | *block_size = BLOCK_SIZE; | |
2755 | } | |
00988a35 | 2756 | kfree(buf); |
00988a35 MMOD |
2757 | } |
2758 | ||
2759 | static void | |
2760 | cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) | |
2761 | { | |
2762 | ReadCapdata_struct_16 *buf; | |
2763 | int return_code; | |
b57695fe | 2764 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2765 | |
2766 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2767 | if (!buf) { | |
00988a35 MMOD |
2768 | printk(KERN_WARNING "cciss: out of memory\n"); |
2769 | return; | |
2770 | } | |
1aebe187 | 2771 | |
b57695fe | 2772 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
00988a35 MMOD |
2773 | if (withirq) { |
2774 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, | |
2775 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
b57695fe | 2776 | 0, scsi3addr, TYPE_CMD); |
00988a35 MMOD |
2777 | } |
2778 | else { | |
2779 | return_code = sendcmd(CCISS_READ_CAPACITY_16, | |
2780 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
b57695fe | 2781 | 0, scsi3addr, TYPE_CMD); |
00988a35 MMOD |
2782 | } |
2783 | if (return_code == IO_OK) { | |
4c1f2b31 AV |
2784 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
2785 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
00988a35 MMOD |
2786 | } else { /* read capacity command failed */ |
2787 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
2788 | *total_size = 0; | |
2789 | *block_size = BLOCK_SIZE; | |
2790 | } | |
7b92aadf | 2791 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2792 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2793 | kfree(buf); |
1da177e4 LT |
2794 | } |
2795 | ||
1da177e4 LT |
2796 | static int cciss_revalidate(struct gendisk *disk) |
2797 | { | |
2798 | ctlr_info_t *h = get_host(disk); | |
2799 | drive_info_struct *drv = get_drv(disk); | |
2800 | int logvol; | |
7c832835 | 2801 | int FOUND = 0; |
1da177e4 | 2802 | unsigned int block_size; |
00988a35 | 2803 | sector_t total_size; |
1da177e4 LT |
2804 | InquiryData_struct *inq_buff = NULL; |
2805 | ||
7c832835 | 2806 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
9cef0d2f | 2807 | if (memcmp(h->drv[logvol]->LunID, drv->LunID, |
39ccf9a6 | 2808 | sizeof(drv->LunID)) == 0) { |
7c832835 | 2809 | FOUND = 1; |
1da177e4 LT |
2810 | break; |
2811 | } | |
2812 | } | |
2813 | ||
7c832835 BH |
2814 | if (!FOUND) |
2815 | return 1; | |
1da177e4 | 2816 | |
7c832835 BH |
2817 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2818 | if (inq_buff == NULL) { | |
2819 | printk(KERN_WARNING "cciss: out of memory\n"); | |
7c832835 BH |
2820 | return 1; |
2821 | } | |
00988a35 MMOD |
2822 | if (h->cciss_read == CCISS_READ_10) { |
2823 | cciss_read_capacity(h->ctlr, logvol, 1, | |
2824 | &total_size, &block_size); | |
2825 | } else { | |
2826 | cciss_read_capacity_16(h->ctlr, logvol, 1, | |
2827 | &total_size, &block_size); | |
2828 | } | |
7c832835 BH |
2829 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, |
2830 | inq_buff, drv); | |
1da177e4 | 2831 | |
e1defc4f | 2832 | blk_queue_logical_block_size(drv->queue, drv->block_size); |
1da177e4 LT |
2833 | set_capacity(disk, drv->nr_blocks); |
2834 | ||
1da177e4 LT |
2835 | kfree(inq_buff); |
2836 | return 0; | |
2837 | } | |
2838 | ||
2839 | /* | |
2840 | * Wait polling for a command to complete. | |
2841 | * The memory mapped FIFO is polled for the completion. | |
2842 | * Used only at init time, interrupts from the HBA are disabled. | |
2843 | */ | |
2844 | static unsigned long pollcomplete(int ctlr) | |
2845 | { | |
2846 | unsigned long done; | |
2847 | int i; | |
2848 | ||
2849 | /* Wait (up to 20 seconds) for a command to complete */ | |
2850 | ||
2851 | for (i = 20 * HZ; i > 0; i--) { | |
2852 | done = hba[ctlr]->access.command_completed(hba[ctlr]); | |
86e84862 NA |
2853 | if (done == FIFO_EMPTY) |
2854 | schedule_timeout_uninterruptible(1); | |
2855 | else | |
e2019b58 | 2856 | return done; |
1da177e4 LT |
2857 | } |
2858 | /* Invalid address to tell caller we ran out of time */ | |
2859 | return 1; | |
2860 | } | |
3da8b713 | 2861 | |
4a4b2d76 SC |
2862 | /* Send command c to controller h and poll for it to complete. |
2863 | * Turns interrupts off on the board. Used at driver init time | |
2864 | * and during SCSI error recovery. | |
1da177e4 | 2865 | */ |
4a4b2d76 | 2866 | static int sendcmd_core(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 | 2867 | { |
1da177e4 LT |
2868 | int i; |
2869 | unsigned long complete; | |
4a4b2d76 | 2870 | int status = IO_ERROR; |
1da177e4 | 2871 | u64bit buff_dma_handle; |
1da177e4 | 2872 | |
4a4b2d76 SC |
2873 | resend_cmd1: |
2874 | ||
2875 | /* Disable interrupt on the board. */ | |
2876 | h->access.set_intr_mask(h, CCISS_INTR_OFF); | |
7c832835 | 2877 | |
1da177e4 | 2878 | /* Make sure there is room in the command FIFO */ |
7c832835 | 2879 | /* Actually it should be completely empty at this time */ |
3da8b713 | 2880 | /* unless we are in here doing error handling for the scsi */ |
2881 | /* tape side of the driver. */ | |
7c832835 | 2882 | for (i = 200000; i > 0; i--) { |
1da177e4 | 2883 | /* if fifo isn't full go */ |
4a4b2d76 | 2884 | if (!(h->access.fifo_full(h))) |
7c832835 | 2885 | break; |
7c832835 BH |
2886 | udelay(10); |
2887 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," | |
4a4b2d76 | 2888 | " waiting!\n", h->ctlr); |
7c832835 | 2889 | } |
4a4b2d76 | 2890 | h->access.submit_command(h, c); /* Send the cmd */ |
3da8b713 | 2891 | do { |
4a4b2d76 | 2892 | complete = pollcomplete(h->ctlr); |
1da177e4 LT |
2893 | |
2894 | #ifdef CCISS_DEBUG | |
3da8b713 | 2895 | printk(KERN_DEBUG "cciss: command completed\n"); |
7c832835 | 2896 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2897 | |
3da8b713 | 2898 | if (complete == 1) { |
7c832835 BH |
2899 | printk(KERN_WARNING |
2900 | "cciss cciss%d: SendCmd Timeout out, " | |
4a4b2d76 | 2901 | "No command list address returned!\n", h->ctlr); |
3da8b713 | 2902 | status = IO_ERROR; |
3da8b713 | 2903 | break; |
2904 | } | |
2905 | ||
72f9f132 | 2906 | /* Make sure it's the command we're expecting. */ |
4a4b2d76 | 2907 | if ((complete & ~CISS_ERROR_BIT) != c->busaddr) { |
72f9f132 | 2908 | printk(KERN_WARNING "cciss%d: Unexpected command " |
2909 | "completion.\n", h->ctlr); | |
4a4b2d76 SC |
2910 | continue; |
2911 | } | |
2912 | ||
2913 | /* It is our command. If no error, we're done. */ | |
2914 | if (!(complete & CISS_ERROR_BIT)) { | |
2915 | status = IO_OK; | |
2916 | break; | |
2917 | } | |
2918 | ||
2919 | /* There is an error... */ | |
2920 | ||
2921 | /* if data overrun or underun on Report command ignore it */ | |
2922 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || | |
2923 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || | |
2924 | (c->Request.CDB[0] == CISS_INQUIRY)) && | |
2925 | ((c->err_info->CommandStatus == CMD_DATA_OVERRUN) || | |
2926 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN))) { | |
2927 | complete = c->busaddr; | |
2928 | status = IO_OK; | |
2929 | break; | |
1da177e4 | 2930 | } |
4a4b2d76 SC |
2931 | |
2932 | if (c->err_info->CommandStatus == CMD_UNSOLICITED_ABORT) { | |
2933 | printk(KERN_WARNING "cciss%d: unsolicited abort %p\n", | |
2934 | h->ctlr, c); | |
2935 | if (c->retry_count < MAX_CMD_RETRIES) { | |
2936 | printk(KERN_WARNING "cciss%d: retrying %p\n", | |
2937 | h->ctlr, c); | |
2938 | c->retry_count++; | |
2939 | /* erase the old error information */ | |
2940 | memset(c->err_info, 0, sizeof(c->err_info)); | |
2941 | goto resend_cmd1; | |
3da8b713 | 2942 | } |
4a4b2d76 SC |
2943 | printk(KERN_WARNING "cciss%d: retried %p too many " |
2944 | "times\n", h->ctlr, c); | |
2945 | status = IO_ERROR; | |
3c2ab402 | 2946 | break; |
4a4b2d76 SC |
2947 | } |
2948 | ||
2949 | if (c->err_info->CommandStatus == CMD_UNABORTABLE) { | |
2950 | printk(KERN_WARNING "cciss%d: command could not be " | |
2951 | "aborted.\n", h->ctlr); | |
2952 | status = IO_ERROR; | |
3c2ab402 | 2953 | break; |
4a4b2d76 SC |
2954 | } |
2955 | ||
4a4b2d76 | 2956 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS) { |
3c2ab402 | 2957 | status = check_target_status(h, c); |
2958 | break; | |
4a4b2d76 SC |
2959 | } |
2960 | ||
3c2ab402 | 2961 | printk(KERN_WARNING "cciss%d: sendcmd error\n", h->ctlr); |
2962 | printk(KERN_WARNING "cmd = 0x%02x, CommandStatus = 0x%02x\n", | |
2963 | c->Request.CDB[0], c->err_info->CommandStatus); | |
4a4b2d76 | 2964 | status = IO_ERROR; |
3c2ab402 | 2965 | break; |
4a4b2d76 SC |
2966 | |
2967 | } while (1); | |
7c832835 | 2968 | |
1da177e4 | 2969 | /* unlock the data buffer from DMA */ |
bb2a37bf MM |
2970 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2971 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
4a4b2d76 | 2972 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
7c832835 | 2973 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
4a4b2d76 SC |
2974 | return status; |
2975 | } | |
2976 | ||
2977 | /* | |
2978 | * Send a command to the controller, and wait for it to complete. | |
2979 | * Used at init time, and during SCSI error recovery. | |
2980 | */ | |
2981 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, | |
4a4b2d76 SC |
2982 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) |
2983 | { | |
2984 | CommandList_struct *c; | |
2985 | int status; | |
2986 | ||
2987 | c = cmd_alloc(hba[ctlr], 1); | |
2988 | if (!c) { | |
2989 | printk(KERN_WARNING "cciss: unable to get memory"); | |
2990 | return IO_ERROR; | |
2991 | } | |
b57695fe | 2992 | status = fill_cmd(c, cmd, ctlr, buff, size, page_code, |
2993 | scsi3addr, cmd_type); | |
4a4b2d76 SC |
2994 | if (status == IO_OK) |
2995 | status = sendcmd_core(hba[ctlr], c); | |
2996 | cmd_free(hba[ctlr], c, 1); | |
e2019b58 | 2997 | return status; |
7c832835 BH |
2998 | } |
2999 | ||
1da177e4 LT |
3000 | /* |
3001 | * Map (physical) PCI mem into (virtual) kernel space | |
3002 | */ | |
3003 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
3004 | { | |
7c832835 BH |
3005 | ulong page_base = ((ulong) base) & PAGE_MASK; |
3006 | ulong page_offs = ((ulong) base) - page_base; | |
3007 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 3008 | |
7c832835 | 3009 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
3010 | } |
3011 | ||
7c832835 BH |
3012 | /* |
3013 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
3014 | * the Q to wait for completion. | |
3015 | */ | |
3016 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
3017 | { |
3018 | CommandList_struct *c; | |
7c832835 | 3019 | |
8a3173de JA |
3020 | while (!hlist_empty(&h->reqQ)) { |
3021 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); | |
1da177e4 LT |
3022 | /* can't do anything if fifo is full */ |
3023 | if ((h->access.fifo_full(h))) { | |
3024 | printk(KERN_WARNING "cciss: fifo full\n"); | |
3025 | break; | |
3026 | } | |
3027 | ||
7c832835 | 3028 | /* Get the first entry from the Request Q */ |
8a3173de | 3029 | removeQ(c); |
1da177e4 | 3030 | h->Qdepth--; |
7c832835 BH |
3031 | |
3032 | /* Tell the controller execute command */ | |
1da177e4 | 3033 | h->access.submit_command(h, c); |
7c832835 BH |
3034 | |
3035 | /* Put job onto the completed Q */ | |
8a3173de | 3036 | addQ(&h->cmpQ, c); |
1da177e4 LT |
3037 | } |
3038 | } | |
7c832835 | 3039 | |
1da177e4 LT |
3040 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
3041 | /* Zeros out the error record and then resends the command back */ | |
3042 | /* to the controller */ | |
7c832835 | 3043 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
3044 | { |
3045 | /* erase the old error information */ | |
3046 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
3047 | ||
3048 | /* add it to software queue and then send it to the controller */ | |
8a3173de | 3049 | addQ(&h->reqQ, c); |
1da177e4 | 3050 | h->Qdepth++; |
7c832835 | 3051 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
3052 | h->maxQsinceinit = h->Qdepth; |
3053 | ||
3054 | start_io(h); | |
3055 | } | |
a9925a06 | 3056 | |
1a614f50 SC |
3057 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
3058 | unsigned int msg_byte, unsigned int host_byte, | |
3059 | unsigned int driver_byte) | |
3060 | { | |
3061 | /* inverse of macros in scsi.h */ | |
3062 | return (scsi_status_byte & 0xff) | | |
3063 | ((msg_byte & 0xff) << 8) | | |
3064 | ((host_byte & 0xff) << 16) | | |
3065 | ((driver_byte & 0xff) << 24); | |
3066 | } | |
3067 | ||
0a9279cc MM |
3068 | static inline int evaluate_target_status(ctlr_info_t *h, |
3069 | CommandList_struct *cmd, int *retry_cmd) | |
03bbfee5 MMOD |
3070 | { |
3071 | unsigned char sense_key; | |
1a614f50 SC |
3072 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
3073 | int error_value; | |
3074 | ||
0a9279cc | 3075 | *retry_cmd = 0; |
1a614f50 SC |
3076 | /* If we get in here, it means we got "target status", that is, scsi status */ |
3077 | status_byte = cmd->err_info->ScsiStatus; | |
3078 | driver_byte = DRIVER_OK; | |
3079 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ | |
3080 | ||
3081 | if (blk_pc_request(cmd->rq)) | |
3082 | host_byte = DID_PASSTHROUGH; | |
3083 | else | |
3084 | host_byte = DID_OK; | |
3085 | ||
3086 | error_value = make_status_bytes(status_byte, msg_byte, | |
3087 | host_byte, driver_byte); | |
03bbfee5 | 3088 | |
1a614f50 | 3089 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
03bbfee5 MMOD |
3090 | if (!blk_pc_request(cmd->rq)) |
3091 | printk(KERN_WARNING "cciss: cmd %p " | |
3092 | "has SCSI Status 0x%x\n", | |
3093 | cmd, cmd->err_info->ScsiStatus); | |
1a614f50 | 3094 | return error_value; |
03bbfee5 MMOD |
3095 | } |
3096 | ||
3097 | /* check the sense key */ | |
3098 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
3099 | /* no status or recovered error */ | |
1a614f50 SC |
3100 | if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq)) |
3101 | error_value = 0; | |
03bbfee5 | 3102 | |
0a9279cc MM |
3103 | if (check_for_unit_attention(h, cmd)) { |
3104 | *retry_cmd = !blk_pc_request(cmd->rq); | |
3105 | return 0; | |
3106 | } | |
3107 | ||
03bbfee5 | 3108 | if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */ |
1a614f50 | 3109 | if (error_value != 0) |
03bbfee5 MMOD |
3110 | printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" |
3111 | " sense key = 0x%x\n", cmd, sense_key); | |
1a614f50 | 3112 | return error_value; |
03bbfee5 MMOD |
3113 | } |
3114 | ||
3115 | /* SG_IO or similar, copy sense data back */ | |
3116 | if (cmd->rq->sense) { | |
3117 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) | |
3118 | cmd->rq->sense_len = cmd->err_info->SenseLen; | |
3119 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, | |
3120 | cmd->rq->sense_len); | |
3121 | } else | |
3122 | cmd->rq->sense_len = 0; | |
3123 | ||
1a614f50 | 3124 | return error_value; |
03bbfee5 MMOD |
3125 | } |
3126 | ||
7c832835 | 3127 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
3128 | * buffers for the completed job. Note that this function does not need |
3129 | * to hold the hba/queue lock. | |
7c832835 BH |
3130 | */ |
3131 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
3132 | int timeout) | |
1da177e4 | 3133 | { |
1da177e4 | 3134 | int retry_cmd = 0; |
198b7660 MMOD |
3135 | struct request *rq = cmd->rq; |
3136 | ||
3137 | rq->errors = 0; | |
7c832835 | 3138 | |
1da177e4 | 3139 | if (timeout) |
1a614f50 | 3140 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
1da177e4 | 3141 | |
d38ae168 MMOD |
3142 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
3143 | goto after_error_processing; | |
7c832835 | 3144 | |
d38ae168 | 3145 | switch (cmd->err_info->CommandStatus) { |
d38ae168 | 3146 | case CMD_TARGET_STATUS: |
0a9279cc | 3147 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
d38ae168 MMOD |
3148 | break; |
3149 | case CMD_DATA_UNDERRUN: | |
03bbfee5 MMOD |
3150 | if (blk_fs_request(cmd->rq)) { |
3151 | printk(KERN_WARNING "cciss: cmd %p has" | |
3152 | " completed with data underrun " | |
3153 | "reported\n", cmd); | |
c3a4d78c | 3154 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
03bbfee5 | 3155 | } |
d38ae168 MMOD |
3156 | break; |
3157 | case CMD_DATA_OVERRUN: | |
03bbfee5 MMOD |
3158 | if (blk_fs_request(cmd->rq)) |
3159 | printk(KERN_WARNING "cciss: cmd %p has" | |
3160 | " completed with data overrun " | |
3161 | "reported\n", cmd); | |
d38ae168 MMOD |
3162 | break; |
3163 | case CMD_INVALID: | |
3164 | printk(KERN_WARNING "cciss: cmd %p is " | |
3165 | "reported invalid\n", cmd); | |
1a614f50 SC |
3166 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3167 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3168 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3169 | break; |
3170 | case CMD_PROTOCOL_ERR: | |
3171 | printk(KERN_WARNING "cciss: cmd %p has " | |
3172 | "protocol error \n", cmd); | |
1a614f50 SC |
3173 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3174 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3175 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3176 | break; |
3177 | case CMD_HARDWARE_ERR: | |
3178 | printk(KERN_WARNING "cciss: cmd %p had " | |
3179 | " hardware error\n", cmd); | |
1a614f50 SC |
3180 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3181 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3182 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3183 | break; |
3184 | case CMD_CONNECTION_LOST: | |
3185 | printk(KERN_WARNING "cciss: cmd %p had " | |
3186 | "connection lost\n", cmd); | |
1a614f50 SC |
3187 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3188 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3189 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3190 | break; |
3191 | case CMD_ABORTED: | |
3192 | printk(KERN_WARNING "cciss: cmd %p was " | |
3193 | "aborted\n", cmd); | |
1a614f50 SC |
3194 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3195 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3196 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
3197 | break; |
3198 | case CMD_ABORT_FAILED: | |
3199 | printk(KERN_WARNING "cciss: cmd %p reports " | |
3200 | "abort failed\n", cmd); | |
1a614f50 SC |
3201 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3202 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3203 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3204 | break; |
3205 | case CMD_UNSOLICITED_ABORT: | |
3206 | printk(KERN_WARNING "cciss%d: unsolicited " | |
3207 | "abort %p\n", h->ctlr, cmd); | |
3208 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
3209 | retry_cmd = 1; | |
3210 | printk(KERN_WARNING | |
3211 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
3212 | cmd->retry_count++; | |
3213 | } else | |
3214 | printk(KERN_WARNING | |
3215 | "cciss%d: %p retried too " | |
3216 | "many times\n", h->ctlr, cmd); | |
1a614f50 SC |
3217 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3218 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3219 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
3220 | break; |
3221 | case CMD_TIMEOUT: | |
3222 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
1a614f50 SC |
3223 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3224 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3225 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3226 | break; |
3227 | default: | |
3228 | printk(KERN_WARNING "cciss: cmd %p returned " | |
3229 | "unknown status %x\n", cmd, | |
3230 | cmd->err_info->CommandStatus); | |
1a614f50 SC |
3231 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3232 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3233 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
1da177e4 | 3234 | } |
d38ae168 MMOD |
3235 | |
3236 | after_error_processing: | |
3237 | ||
1da177e4 | 3238 | /* We need to return this command */ |
7c832835 BH |
3239 | if (retry_cmd) { |
3240 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 3241 | return; |
7c832835 | 3242 | } |
03bbfee5 | 3243 | cmd->rq->completion_data = cmd; |
a9925a06 | 3244 | blk_complete_request(cmd->rq); |
1da177e4 LT |
3245 | } |
3246 | ||
7c832835 BH |
3247 | /* |
3248 | * Get a request and submit it to the controller. | |
1da177e4 | 3249 | */ |
165125e1 | 3250 | static void do_cciss_request(struct request_queue *q) |
1da177e4 | 3251 | { |
7c832835 | 3252 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 3253 | CommandList_struct *c; |
00988a35 MMOD |
3254 | sector_t start_blk; |
3255 | int seg; | |
1da177e4 LT |
3256 | struct request *creq; |
3257 | u64bit temp64; | |
3258 | struct scatterlist tmp_sg[MAXSGENTRIES]; | |
3259 | drive_info_struct *drv; | |
3260 | int i, dir; | |
3261 | ||
3262 | /* We call start_io here in case there is a command waiting on the | |
3263 | * queue that has not been sent. | |
7c832835 | 3264 | */ |
1da177e4 LT |
3265 | if (blk_queue_plugged(q)) |
3266 | goto startio; | |
3267 | ||
7c832835 | 3268 | queue: |
9934c8c0 | 3269 | creq = blk_peek_request(q); |
1da177e4 LT |
3270 | if (!creq) |
3271 | goto startio; | |
3272 | ||
089fe1b2 | 3273 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
1da177e4 | 3274 | |
7c832835 | 3275 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
3276 | goto full; |
3277 | ||
9934c8c0 | 3278 | blk_start_request(creq); |
1da177e4 LT |
3279 | |
3280 | spin_unlock_irq(q->queue_lock); | |
3281 | ||
3282 | c->cmd_type = CMD_RWREQ; | |
3283 | c->rq = creq; | |
7c832835 BH |
3284 | |
3285 | /* fill in the request */ | |
1da177e4 | 3286 | drv = creq->rq_disk->private_data; |
7c832835 | 3287 | c->Header.ReplyQueue = 0; // unused in simple mode |
33079b21 MM |
3288 | /* got command from pool, so use the command block index instead */ |
3289 | /* for direct lookups. */ | |
3290 | /* The first 2 bits are reserved for controller error reporting. */ | |
3291 | c->Header.Tag.lower = (c->cmdindex << 3); | |
7c832835 | 3292 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
39ccf9a6 | 3293 | memcpy(&c->Header.LUN, drv->LunID, sizeof(drv->LunID)); |
7c832835 BH |
3294 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
3295 | c->Request.Type.Type = TYPE_CMD; // It is a command. | |
3296 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
3297 | c->Request.Type.Direction = | |
a52de245 | 3298 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
7c832835 BH |
3299 | c->Request.Timeout = 0; // Don't time out |
3300 | c->Request.CDB[0] = | |
00988a35 | 3301 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
83096ebf | 3302 | start_blk = blk_rq_pos(creq); |
1da177e4 | 3303 | #ifdef CCISS_DEBUG |
83096ebf TH |
3304 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", |
3305 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); | |
7c832835 | 3306 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3307 | |
45711f1a | 3308 | sg_init_table(tmp_sg, MAXSGENTRIES); |
1da177e4 LT |
3309 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
3310 | ||
7c832835 | 3311 | /* get the DMA records for the setup */ |
1da177e4 LT |
3312 | if (c->Request.Type.Direction == XFER_READ) |
3313 | dir = PCI_DMA_FROMDEVICE; | |
3314 | else | |
3315 | dir = PCI_DMA_TODEVICE; | |
3316 | ||
7c832835 | 3317 | for (i = 0; i < seg; i++) { |
1da177e4 | 3318 | c->SG[i].Len = tmp_sg[i].length; |
45711f1a | 3319 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
7c832835 BH |
3320 | tmp_sg[i].offset, |
3321 | tmp_sg[i].length, dir); | |
1da177e4 | 3322 | c->SG[i].Addr.lower = temp64.val32.lower; |
7c832835 BH |
3323 | c->SG[i].Addr.upper = temp64.val32.upper; |
3324 | c->SG[i].Ext = 0; // we are not chaining | |
1da177e4 | 3325 | } |
7c832835 BH |
3326 | /* track how many SG entries we are using */ |
3327 | if (seg > h->maxSG) | |
3328 | h->maxSG = seg; | |
1da177e4 LT |
3329 | |
3330 | #ifdef CCISS_DEBUG | |
83096ebf TH |
3331 | printk(KERN_DEBUG "cciss: Submitting %u sectors in %d segments\n", |
3332 | blk_rq_sectors(creq), seg); | |
7c832835 | 3333 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
3334 | |
3335 | c->Header.SGList = c->Header.SGTotal = seg; | |
03bbfee5 MMOD |
3336 | if (likely(blk_fs_request(creq))) { |
3337 | if(h->cciss_read == CCISS_READ_10) { | |
3338 | c->Request.CDB[1] = 0; | |
3339 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB | |
3340 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; | |
3341 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
3342 | c->Request.CDB[5] = start_blk & 0xff; | |
3343 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB | |
83096ebf TH |
3344 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
3345 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3346 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
3347 | } else { | |
582539e5 RD |
3348 | u32 upper32 = upper_32_bits(start_blk); |
3349 | ||
03bbfee5 MMOD |
3350 | c->Request.CDBLen = 16; |
3351 | c->Request.CDB[1]= 0; | |
582539e5 RD |
3352 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; //MSB |
3353 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; | |
3354 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; | |
3355 | c->Request.CDB[5]= upper32 & 0xff; | |
03bbfee5 MMOD |
3356 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
3357 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
3358 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
3359 | c->Request.CDB[9]= start_blk & 0xff; | |
83096ebf TH |
3360 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
3361 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; | |
3362 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; | |
3363 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3364 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
3365 | } | |
3366 | } else if (blk_pc_request(creq)) { | |
3367 | c->Request.CDBLen = creq->cmd_len; | |
3368 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); | |
00988a35 | 3369 | } else { |
03bbfee5 MMOD |
3370 | printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); |
3371 | BUG(); | |
00988a35 | 3372 | } |
1da177e4 LT |
3373 | |
3374 | spin_lock_irq(q->queue_lock); | |
3375 | ||
8a3173de | 3376 | addQ(&h->reqQ, c); |
1da177e4 | 3377 | h->Qdepth++; |
7c832835 BH |
3378 | if (h->Qdepth > h->maxQsinceinit) |
3379 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
3380 | |
3381 | goto queue; | |
00988a35 | 3382 | full: |
1da177e4 | 3383 | blk_stop_queue(q); |
00988a35 | 3384 | startio: |
1da177e4 LT |
3385 | /* We will already have the driver lock here so not need |
3386 | * to lock it. | |
7c832835 | 3387 | */ |
1da177e4 LT |
3388 | start_io(h); |
3389 | } | |
3390 | ||
3da8b713 | 3391 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
3392 | { | |
3da8b713 | 3393 | return h->access.command_completed(h); |
3da8b713 | 3394 | } |
3395 | ||
3396 | static inline int interrupt_pending(ctlr_info_t *h) | |
3397 | { | |
3da8b713 | 3398 | return h->access.intr_pending(h); |
3da8b713 | 3399 | } |
3400 | ||
3401 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
3402 | { | |
7c832835 | 3403 | return (((h->access.intr_pending(h) == 0) || |
3da8b713 | 3404 | (h->interrupts_enabled == 0))); |
3da8b713 | 3405 | } |
3406 | ||
7d12e780 | 3407 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
1da177e4 LT |
3408 | { |
3409 | ctlr_info_t *h = dev_id; | |
3410 | CommandList_struct *c; | |
3411 | unsigned long flags; | |
33079b21 | 3412 | __u32 a, a1, a2; |
1da177e4 | 3413 | |
3da8b713 | 3414 | if (interrupt_not_for_us(h)) |
1da177e4 | 3415 | return IRQ_NONE; |
1da177e4 LT |
3416 | /* |
3417 | * If there are completed commands in the completion queue, | |
3418 | * we had better do something about it. | |
3419 | */ | |
3420 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 3421 | while (interrupt_pending(h)) { |
7c832835 | 3422 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
1da177e4 | 3423 | a1 = a; |
33079b21 MM |
3424 | if ((a & 0x04)) { |
3425 | a2 = (a >> 3); | |
f880632f | 3426 | if (a2 >= h->nr_cmds) { |
7c832835 BH |
3427 | printk(KERN_WARNING |
3428 | "cciss: controller cciss%d failed, stopping.\n", | |
3429 | h->ctlr); | |
33079b21 MM |
3430 | fail_all_cmds(h->ctlr); |
3431 | return IRQ_HANDLED; | |
3432 | } | |
3433 | ||
3434 | c = h->cmd_pool + a2; | |
3435 | a = c->busaddr; | |
3436 | ||
3437 | } else { | |
8a3173de JA |
3438 | struct hlist_node *tmp; |
3439 | ||
7c832835 | 3440 | a &= ~3; |
8a3173de JA |
3441 | c = NULL; |
3442 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { | |
3443 | if (c->busaddr == a) | |
7c832835 BH |
3444 | break; |
3445 | } | |
33079b21 | 3446 | } |
1da177e4 LT |
3447 | /* |
3448 | * If we've found the command, take it off the | |
3449 | * completion Q and free it | |
3450 | */ | |
8a3173de JA |
3451 | if (c && c->busaddr == a) { |
3452 | removeQ(c); | |
1da177e4 LT |
3453 | if (c->cmd_type == CMD_RWREQ) { |
3454 | complete_command(h, c, 0); | |
3455 | } else if (c->cmd_type == CMD_IOCTL_PEND) { | |
3456 | complete(c->waiting); | |
3457 | } | |
3458 | # ifdef CONFIG_CISS_SCSI_TAPE | |
3459 | else if (c->cmd_type == CMD_SCSI) | |
3460 | complete_scsi_command(c, 0, a1); | |
3461 | # endif | |
3462 | continue; | |
3463 | } | |
3464 | } | |
3465 | } | |
3466 | ||
1da177e4 LT |
3467 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
3468 | return IRQ_HANDLED; | |
3469 | } | |
7c832835 | 3470 | |
b368c9dd AP |
3471 | /** |
3472 | * add_to_scan_list() - add controller to rescan queue | |
3473 | * @h: Pointer to the controller. | |
3474 | * | |
3475 | * Adds the controller to the rescan queue if not already on the queue. | |
3476 | * | |
3477 | * returns 1 if added to the queue, 0 if skipped (could be on the | |
3478 | * queue already, or the controller could be initializing or shutting | |
3479 | * down). | |
3480 | **/ | |
3481 | static int add_to_scan_list(struct ctlr_info *h) | |
3482 | { | |
3483 | struct ctlr_info *test_h; | |
3484 | int found = 0; | |
3485 | int ret = 0; | |
3486 | ||
3487 | if (h->busy_initializing) | |
3488 | return 0; | |
3489 | ||
3490 | if (!mutex_trylock(&h->busy_shutting_down)) | |
3491 | return 0; | |
3492 | ||
3493 | mutex_lock(&scan_mutex); | |
3494 | list_for_each_entry(test_h, &scan_q, scan_list) { | |
3495 | if (test_h == h) { | |
3496 | found = 1; | |
3497 | break; | |
3498 | } | |
3499 | } | |
3500 | if (!found && !h->busy_scanning) { | |
3501 | INIT_COMPLETION(h->scan_wait); | |
3502 | list_add_tail(&h->scan_list, &scan_q); | |
3503 | ret = 1; | |
3504 | } | |
3505 | mutex_unlock(&scan_mutex); | |
3506 | mutex_unlock(&h->busy_shutting_down); | |
3507 | ||
3508 | return ret; | |
3509 | } | |
3510 | ||
3511 | /** | |
3512 | * remove_from_scan_list() - remove controller from rescan queue | |
3513 | * @h: Pointer to the controller. | |
3514 | * | |
3515 | * Removes the controller from the rescan queue if present. Blocks if | |
3516 | * the controller is currently conducting a rescan. | |
3517 | **/ | |
3518 | static void remove_from_scan_list(struct ctlr_info *h) | |
3519 | { | |
3520 | struct ctlr_info *test_h, *tmp_h; | |
3521 | int scanning = 0; | |
3522 | ||
3523 | mutex_lock(&scan_mutex); | |
3524 | list_for_each_entry_safe(test_h, tmp_h, &scan_q, scan_list) { | |
3525 | if (test_h == h) { | |
3526 | list_del(&h->scan_list); | |
3527 | complete_all(&h->scan_wait); | |
3528 | mutex_unlock(&scan_mutex); | |
3529 | return; | |
3530 | } | |
3531 | } | |
3532 | if (&h->busy_scanning) | |
3533 | scanning = 0; | |
3534 | mutex_unlock(&scan_mutex); | |
3535 | ||
3536 | if (scanning) | |
3537 | wait_for_completion(&h->scan_wait); | |
3538 | } | |
3539 | ||
3540 | /** | |
3541 | * scan_thread() - kernel thread used to rescan controllers | |
3542 | * @data: Ignored. | |
3543 | * | |
3544 | * A kernel thread used scan for drive topology changes on | |
3545 | * controllers. The thread processes only one controller at a time | |
3546 | * using a queue. Controllers are added to the queue using | |
3547 | * add_to_scan_list() and removed from the queue either after done | |
3548 | * processing or using remove_from_scan_list(). | |
3549 | * | |
3550 | * returns 0. | |
3551 | **/ | |
0a9279cc MM |
3552 | static int scan_thread(void *data) |
3553 | { | |
b368c9dd | 3554 | struct ctlr_info *h; |
0a9279cc | 3555 | |
b368c9dd AP |
3556 | while (1) { |
3557 | set_current_state(TASK_INTERRUPTIBLE); | |
3558 | schedule(); | |
0a9279cc MM |
3559 | if (kthread_should_stop()) |
3560 | break; | |
b368c9dd AP |
3561 | |
3562 | while (1) { | |
3563 | mutex_lock(&scan_mutex); | |
3564 | if (list_empty(&scan_q)) { | |
3565 | mutex_unlock(&scan_mutex); | |
3566 | break; | |
3567 | } | |
3568 | ||
3569 | h = list_entry(scan_q.next, | |
3570 | struct ctlr_info, | |
3571 | scan_list); | |
3572 | list_del(&h->scan_list); | |
3573 | h->busy_scanning = 1; | |
3574 | mutex_unlock(&scan_mutex); | |
3575 | ||
3576 | if (h) { | |
2d11d993 | 3577 | rebuild_lun_table(h, 0, 0); |
b368c9dd AP |
3578 | complete_all(&h->scan_wait); |
3579 | mutex_lock(&scan_mutex); | |
3580 | h->busy_scanning = 0; | |
3581 | mutex_unlock(&scan_mutex); | |
3582 | } | |
3583 | } | |
0a9279cc | 3584 | } |
b368c9dd | 3585 | |
0a9279cc MM |
3586 | return 0; |
3587 | } | |
3588 | ||
3589 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) | |
3590 | { | |
3591 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) | |
3592 | return 0; | |
3593 | ||
3594 | switch (c->err_info->SenseInfo[12]) { | |
3595 | case STATE_CHANGED: | |
3596 | printk(KERN_WARNING "cciss%d: a state change " | |
3597 | "detected, command retried\n", h->ctlr); | |
3598 | return 1; | |
3599 | break; | |
3600 | case LUN_FAILED: | |
3601 | printk(KERN_WARNING "cciss%d: LUN failure " | |
3602 | "detected, action required\n", h->ctlr); | |
3603 | return 1; | |
3604 | break; | |
3605 | case REPORT_LUNS_CHANGED: | |
3606 | printk(KERN_WARNING "cciss%d: report LUN data " | |
3607 | "changed\n", h->ctlr); | |
b368c9dd AP |
3608 | add_to_scan_list(h); |
3609 | wake_up_process(cciss_scan_thread); | |
0a9279cc MM |
3610 | return 1; |
3611 | break; | |
3612 | case POWER_OR_RESET: | |
3613 | printk(KERN_WARNING "cciss%d: a power on " | |
3614 | "or device reset detected\n", h->ctlr); | |
3615 | return 1; | |
3616 | break; | |
3617 | case UNIT_ATTENTION_CLEARED: | |
3618 | printk(KERN_WARNING "cciss%d: unit attention " | |
3619 | "cleared by another initiator\n", h->ctlr); | |
3620 | return 1; | |
3621 | break; | |
3622 | default: | |
3623 | printk(KERN_WARNING "cciss%d: unknown " | |
3624 | "unit attention detected\n", h->ctlr); | |
3625 | return 1; | |
3626 | } | |
3627 | } | |
3628 | ||
7c832835 | 3629 | /* |
d14c4ab5 | 3630 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 3631 | * the io functions. |
7c832835 | 3632 | * This is for debug only. |
1da177e4 LT |
3633 | */ |
3634 | #ifdef CCISS_DEBUG | |
7c832835 | 3635 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 LT |
3636 | { |
3637 | int i; | |
3638 | char temp_name[17]; | |
3639 | ||
3640 | printk("Controller Configuration information\n"); | |
3641 | printk("------------------------------------\n"); | |
7c832835 | 3642 | for (i = 0; i < 4; i++) |
1da177e4 | 3643 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
3644 | temp_name[4] = '\0'; |
3645 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 3646 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
3647 | printk(" Transport methods supported = 0x%x\n", |
3648 | readl(&(tb->TransportSupport))); | |
3649 | printk(" Transport methods active = 0x%x\n", | |
3650 | readl(&(tb->TransportActive))); | |
3651 | printk(" Requested transport Method = 0x%x\n", | |
3652 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 3653 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 3654 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 3655 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
3656 | readl(&(tb->HostWrite.CoalIntCount))); |
3657 | printk(" Max outstanding commands = 0x%d\n", | |
3658 | readl(&(tb->CmdsOutMax))); | |
3659 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
3660 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
3661 | temp_name[i] = readb(&(tb->ServerName[i])); |
3662 | temp_name[16] = '\0'; | |
3663 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 3664 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
1da177e4 | 3665 | } |
7c832835 | 3666 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3667 | |
7c832835 | 3668 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
3669 | { |
3670 | int i, offset, mem_type, bar_type; | |
7c832835 | 3671 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
3672 | return 0; |
3673 | offset = 0; | |
7c832835 BH |
3674 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
3675 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
3676 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
3677 | offset += 4; | |
3678 | else { | |
3679 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 3680 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 3681 | switch (mem_type) { |
7c832835 BH |
3682 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
3683 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
3684 | offset += 4; /* 32 bit */ | |
3685 | break; | |
3686 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
3687 | offset += 8; | |
3688 | break; | |
3689 | default: /* reserved in PCI 2.2 */ | |
3690 | printk(KERN_WARNING | |
3691 | "Base address is invalid\n"); | |
3692 | return -1; | |
1da177e4 LT |
3693 | break; |
3694 | } | |
3695 | } | |
7c832835 BH |
3696 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
3697 | return i + 1; | |
1da177e4 LT |
3698 | } |
3699 | return -1; | |
3700 | } | |
3701 | ||
fb86a35b MM |
3702 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
3703 | * controllers that are capable. If not, we use IO-APIC mode. | |
3704 | */ | |
3705 | ||
7c832835 BH |
3706 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
3707 | struct pci_dev *pdev, __u32 board_id) | |
fb86a35b MM |
3708 | { |
3709 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3710 | int err; |
3711 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
3712 | {0, 2}, {0, 3} | |
3713 | }; | |
fb86a35b MM |
3714 | |
3715 | /* Some boards advertise MSI but don't really support it */ | |
3716 | if ((board_id == 0x40700E11) || | |
7c832835 BH |
3717 | (board_id == 0x40800E11) || |
3718 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
fb86a35b MM |
3719 | goto default_int_mode; |
3720 | ||
7c832835 BH |
3721 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
3722 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); | |
3723 | if (!err) { | |
3724 | c->intr[0] = cciss_msix_entries[0].vector; | |
3725 | c->intr[1] = cciss_msix_entries[1].vector; | |
3726 | c->intr[2] = cciss_msix_entries[2].vector; | |
3727 | c->intr[3] = cciss_msix_entries[3].vector; | |
3728 | c->msix_vector = 1; | |
3729 | return; | |
3730 | } | |
3731 | if (err > 0) { | |
3732 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
3733 | "available\n", err); | |
1ecb9c0f | 3734 | goto default_int_mode; |
7c832835 BH |
3735 | } else { |
3736 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
3737 | err); | |
1ecb9c0f | 3738 | goto default_int_mode; |
7c832835 BH |
3739 | } |
3740 | } | |
3741 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
3742 | if (!pci_enable_msi(pdev)) { | |
7c832835 | 3743 | c->msi_vector = 1; |
7c832835 BH |
3744 | } else { |
3745 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
7c832835 BH |
3746 | } |
3747 | } | |
1ecb9c0f | 3748 | default_int_mode: |
7c832835 | 3749 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 3750 | /* if we get here we're going to use the default interrupt mode */ |
7c832835 | 3751 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
fb86a35b MM |
3752 | return; |
3753 | } | |
3754 | ||
7d1fd970 | 3755 | static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
1da177e4 LT |
3756 | { |
3757 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
3758 | __u32 board_id, scratchpad = 0; | |
3759 | __u64 cfg_offset; | |
3760 | __u32 cfg_base_addr; | |
3761 | __u64 cfg_base_addr_index; | |
2ec24ff1 SC |
3762 | int i, prod_index, err; |
3763 | ||
3764 | subsystem_vendor_id = pdev->subsystem_vendor; | |
3765 | subsystem_device_id = pdev->subsystem_device; | |
3766 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
3767 | subsystem_vendor_id); | |
3768 | ||
3769 | for (i = 0; i < ARRAY_SIZE(products); i++) { | |
3770 | /* Stand aside for hpsa driver on request */ | |
3771 | if (cciss_allow_hpsa && products[i].board_id == HPSA_BOUNDARY) | |
3772 | return -ENODEV; | |
3773 | if (board_id == products[i].board_id) | |
3774 | break; | |
3775 | } | |
3776 | prod_index = i; | |
3777 | if (prod_index == ARRAY_SIZE(products)) { | |
3778 | dev_warn(&pdev->dev, | |
3779 | "unrecognized board ID: 0x%08lx, ignoring.\n", | |
3780 | (unsigned long) board_id); | |
3781 | return -ENODEV; | |
3782 | } | |
1da177e4 LT |
3783 | |
3784 | /* check to see if controller has been disabled */ | |
3785 | /* BEFORE trying to enable it */ | |
7c832835 BH |
3786 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
3787 | if (!(command & 0x02)) { | |
3788 | printk(KERN_WARNING | |
3789 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 3790 | return -ENODEV; |
1da177e4 LT |
3791 | } |
3792 | ||
c33ac89b | 3793 | err = pci_enable_device(pdev); |
7c832835 | 3794 | if (err) { |
1da177e4 | 3795 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 3796 | return err; |
1da177e4 | 3797 | } |
1da177e4 | 3798 | |
4e570309 BH |
3799 | err = pci_request_regions(pdev, "cciss"); |
3800 | if (err) { | |
3801 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 3802 | "aborting\n"); |
872225ca | 3803 | return err; |
4e570309 BH |
3804 | } |
3805 | ||
1da177e4 LT |
3806 | #ifdef CCISS_DEBUG |
3807 | printk("command = %x\n", command); | |
3808 | printk("irq = %x\n", pdev->irq); | |
3809 | printk("board_id = %x\n", board_id); | |
7c832835 | 3810 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3811 | |
fb86a35b MM |
3812 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
3813 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
3814 | */ | |
3815 | cciss_interrupt_mode(c, pdev, board_id); | |
1da177e4 | 3816 | |
e1438581 MM |
3817 | /* find the memory BAR */ |
3818 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
3819 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) | |
3820 | break; | |
3821 | } | |
3822 | if (i == DEVICE_COUNT_RESOURCE) { | |
3823 | printk(KERN_WARNING "cciss: No memory BAR found\n"); | |
3824 | err = -ENODEV; | |
3825 | goto err_out_free_res; | |
3826 | } | |
3827 | ||
3828 | c->paddr = pci_resource_start(pdev, i); /* addressing mode bits | |
3829 | * already removed | |
3830 | */ | |
1da177e4 | 3831 | |
1da177e4 | 3832 | #ifdef CCISS_DEBUG |
9f92f471 | 3833 | printk("address 0 = %lx\n", c->paddr); |
7c832835 | 3834 | #endif /* CCISS_DEBUG */ |
a5b92873 | 3835 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
1da177e4 LT |
3836 | |
3837 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
3838 | * We poll for up to 120 secs, once per 100ms. */ | |
7c832835 | 3839 | for (i = 0; i < 1200; i++) { |
1da177e4 LT |
3840 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
3841 | if (scratchpad == CCISS_FIRMWARE_READY) | |
3842 | break; | |
3843 | set_current_state(TASK_INTERRUPTIBLE); | |
4d761609 | 3844 | schedule_timeout(msecs_to_jiffies(100)); /* wait 100ms */ |
1da177e4 LT |
3845 | } |
3846 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
3847 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
c33ac89b | 3848 | err = -ENODEV; |
4e570309 | 3849 | goto err_out_free_res; |
1da177e4 LT |
3850 | } |
3851 | ||
3852 | /* get the address index number */ | |
3853 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
3854 | cfg_base_addr &= (__u32) 0x0000ffff; | |
3855 | #ifdef CCISS_DEBUG | |
3856 | printk("cfg base address = %x\n", cfg_base_addr); | |
7c832835 BH |
3857 | #endif /* CCISS_DEBUG */ |
3858 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); | |
1da177e4 | 3859 | #ifdef CCISS_DEBUG |
9f92f471 RD |
3860 | printk("cfg base address index = %llx\n", |
3861 | (unsigned long long)cfg_base_addr_index); | |
7c832835 | 3862 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
3863 | if (cfg_base_addr_index == -1) { |
3864 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
c33ac89b | 3865 | err = -ENODEV; |
4e570309 | 3866 | goto err_out_free_res; |
1da177e4 LT |
3867 | } |
3868 | ||
3869 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
3870 | #ifdef CCISS_DEBUG | |
9f92f471 | 3871 | printk("cfg offset = %llx\n", (unsigned long long)cfg_offset); |
7c832835 BH |
3872 | #endif /* CCISS_DEBUG */ |
3873 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
3874 | cfg_base_addr_index) + | |
3875 | cfg_offset, sizeof(CfgTable_struct)); | |
1da177e4 LT |
3876 | c->board_id = board_id; |
3877 | ||
3878 | #ifdef CCISS_DEBUG | |
945f390f | 3879 | print_cfg_table(c->cfgtable); |
7c832835 | 3880 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3881 | |
49153998 MM |
3882 | /* Some controllers support Zero Memory Raid (ZMR). |
3883 | * When configured in ZMR mode the number of supported | |
3884 | * commands drops to 64. So instead of just setting an | |
3885 | * arbitrary value we make the driver a little smarter. | |
3886 | * We read the config table to tell us how many commands | |
3887 | * are supported on the controller then subtract 4 to | |
3888 | * leave a little room for ioctl calls. | |
3889 | */ | |
3890 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); | |
2ec24ff1 SC |
3891 | c->product_name = products[prod_index].product_name; |
3892 | c->access = *(products[prod_index].access); | |
3893 | c->nr_cmds = c->max_commands - 4; | |
7c832835 BH |
3894 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
3895 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
3896 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
3897 | (readb(&c->cfgtable->Signature[3]) != 'S')) { | |
1da177e4 | 3898 | printk("Does not appear to be a valid CISS config table\n"); |
c33ac89b | 3899 | err = -ENODEV; |
4e570309 | 3900 | goto err_out_free_res; |
1da177e4 | 3901 | } |
1da177e4 | 3902 | #ifdef CONFIG_X86 |
7c832835 BH |
3903 | { |
3904 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
3905 | __u32 prefetch; | |
3906 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
3907 | prefetch |= 0x100; | |
3908 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
3909 | } | |
1da177e4 LT |
3910 | #endif |
3911 | ||
8bf50f71 MMOD |
3912 | /* Disabling DMA prefetch and refetch for the P600. |
3913 | * An ASIC bug may result in accesses to invalid memory addresses. | |
3914 | * We've disabled prefetch for some time now. Testing with XEN | |
3915 | * kernels revealed a bug in the refetch if dom0 resides on a P600. | |
f92e2f5f MM |
3916 | */ |
3917 | if(board_id == 0x3225103C) { | |
3918 | __u32 dma_prefetch; | |
8bf50f71 | 3919 | __u32 dma_refetch; |
f92e2f5f MM |
3920 | dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); |
3921 | dma_prefetch |= 0x8000; | |
3922 | writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); | |
8bf50f71 MMOD |
3923 | pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch); |
3924 | dma_refetch |= 0x1; | |
3925 | pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch); | |
f92e2f5f MM |
3926 | } |
3927 | ||
1da177e4 LT |
3928 | #ifdef CCISS_DEBUG |
3929 | printk("Trying to put board into Simple mode\n"); | |
7c832835 | 3930 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3931 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
7c832835 BH |
3932 | /* Update the field, and then ring the doorbell */ |
3933 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); | |
3934 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); | |
1da177e4 LT |
3935 | |
3936 | /* under certain very rare conditions, this can take awhile. | |
3937 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3938 | * as we enter this code.) */ | |
7c832835 | 3939 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
1da177e4 LT |
3940 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
3941 | break; | |
3942 | /* delay and try again */ | |
3943 | set_current_state(TASK_INTERRUPTIBLE); | |
4d761609 | 3944 | schedule_timeout(msecs_to_jiffies(1)); |
7c832835 | 3945 | } |
1da177e4 LT |
3946 | |
3947 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3948 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
3949 | readl(c->vaddr + SA5_DOORBELL)); | |
3950 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3951 | #ifdef CCISS_DEBUG |
7c832835 BH |
3952 | print_cfg_table(c->cfgtable); |
3953 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3954 | |
7c832835 | 3955 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
1da177e4 | 3956 | printk(KERN_WARNING "cciss: unable to get board into" |
7c832835 | 3957 | " simple mode\n"); |
c33ac89b | 3958 | err = -ENODEV; |
4e570309 | 3959 | goto err_out_free_res; |
1da177e4 LT |
3960 | } |
3961 | return 0; | |
3962 | ||
5faad620 | 3963 | err_out_free_res: |
872225ca MM |
3964 | /* |
3965 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3966 | * Smart Array controllers that pci_enable_device does not undo | |
3967 | */ | |
4e570309 | 3968 | pci_release_regions(pdev); |
c33ac89b | 3969 | return err; |
1da177e4 LT |
3970 | } |
3971 | ||
6ae5ce8e MM |
3972 | /* Function to find the first free pointer into our hba[] array |
3973 | * Returns -1 if no free entries are left. | |
7c832835 | 3974 | */ |
1da177e4 LT |
3975 | static int alloc_cciss_hba(void) |
3976 | { | |
799202cb | 3977 | int i; |
1da177e4 | 3978 | |
7c832835 | 3979 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
3980 | if (!hba[i]) { |
3981 | ctlr_info_t *p; | |
f2912a12 | 3982 | |
06ff37ff | 3983 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
3984 | if (!p) |
3985 | goto Enomem; | |
1da177e4 LT |
3986 | hba[i] = p; |
3987 | return i; | |
3988 | } | |
3989 | } | |
3990 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 3991 | " of %d controllers.\n", MAX_CTLR); |
799202cb MM |
3992 | return -1; |
3993 | Enomem: | |
1da177e4 | 3994 | printk(KERN_ERR "cciss: out of memory.\n"); |
1da177e4 LT |
3995 | return -1; |
3996 | } | |
3997 | ||
2c935593 | 3998 | static void free_hba(int n) |
1da177e4 | 3999 | { |
2c935593 SC |
4000 | ctlr_info_t *h = hba[n]; |
4001 | int i; | |
1da177e4 | 4002 | |
2c935593 SC |
4003 | hba[n] = NULL; |
4004 | for (i = 0; i < h->highest_lun + 1; i++) | |
4005 | if (h->gendisk[i] != NULL) | |
4006 | put_disk(h->gendisk[i]); | |
4007 | kfree(h); | |
1da177e4 LT |
4008 | } |
4009 | ||
82eb03cf CC |
4010 | /* Send a message CDB to the firmware. */ |
4011 | static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) | |
4012 | { | |
4013 | typedef struct { | |
4014 | CommandListHeader_struct CommandHeader; | |
4015 | RequestBlock_struct Request; | |
4016 | ErrDescriptor_struct ErrorDescriptor; | |
4017 | } Command; | |
4018 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); | |
4019 | Command *cmd; | |
4020 | dma_addr_t paddr64; | |
4021 | uint32_t paddr32, tag; | |
4022 | void __iomem *vaddr; | |
4023 | int i, err; | |
4024 | ||
4025 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
4026 | if (vaddr == NULL) | |
4027 | return -ENOMEM; | |
4028 | ||
4029 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the | |
4030 | CCISS commands, so they must be allocated from the lower 4GiB of | |
4031 | memory. */ | |
e930438c | 4032 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
82eb03cf CC |
4033 | if (err) { |
4034 | iounmap(vaddr); | |
4035 | return -ENOMEM; | |
4036 | } | |
4037 | ||
4038 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); | |
4039 | if (cmd == NULL) { | |
4040 | iounmap(vaddr); | |
4041 | return -ENOMEM; | |
4042 | } | |
4043 | ||
4044 | /* This must fit, because of the 32-bit consistent DMA mask. Also, | |
4045 | although there's no guarantee, we assume that the address is at | |
4046 | least 4-byte aligned (most likely, it's page-aligned). */ | |
4047 | paddr32 = paddr64; | |
4048 | ||
4049 | cmd->CommandHeader.ReplyQueue = 0; | |
4050 | cmd->CommandHeader.SGList = 0; | |
4051 | cmd->CommandHeader.SGTotal = 0; | |
4052 | cmd->CommandHeader.Tag.lower = paddr32; | |
4053 | cmd->CommandHeader.Tag.upper = 0; | |
4054 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); | |
4055 | ||
4056 | cmd->Request.CDBLen = 16; | |
4057 | cmd->Request.Type.Type = TYPE_MSG; | |
4058 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; | |
4059 | cmd->Request.Type.Direction = XFER_NONE; | |
4060 | cmd->Request.Timeout = 0; /* Don't time out */ | |
4061 | cmd->Request.CDB[0] = opcode; | |
4062 | cmd->Request.CDB[1] = type; | |
4063 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ | |
4064 | ||
4065 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); | |
4066 | cmd->ErrorDescriptor.Addr.upper = 0; | |
4067 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); | |
4068 | ||
4069 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); | |
4070 | ||
4071 | for (i = 0; i < 10; i++) { | |
4072 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); | |
4073 | if ((tag & ~3) == paddr32) | |
4074 | break; | |
4075 | schedule_timeout_uninterruptible(HZ); | |
4076 | } | |
4077 | ||
4078 | iounmap(vaddr); | |
4079 | ||
4080 | /* we leak the DMA buffer here ... no choice since the controller could | |
4081 | still complete the command. */ | |
4082 | if (i == 10) { | |
4083 | printk(KERN_ERR "cciss: controller message %02x:%02x timed out\n", | |
4084 | opcode, type); | |
4085 | return -ETIMEDOUT; | |
4086 | } | |
4087 | ||
4088 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); | |
4089 | ||
4090 | if (tag & 2) { | |
4091 | printk(KERN_ERR "cciss: controller message %02x:%02x failed\n", | |
4092 | opcode, type); | |
4093 | return -EIO; | |
4094 | } | |
4095 | ||
4096 | printk(KERN_INFO "cciss: controller message %02x:%02x succeeded\n", | |
4097 | opcode, type); | |
4098 | return 0; | |
4099 | } | |
4100 | ||
4101 | #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0) | |
4102 | #define cciss_noop(p) cciss_message(p, 3, 0) | |
4103 | ||
4104 | static __devinit int cciss_reset_msi(struct pci_dev *pdev) | |
4105 | { | |
4106 | /* the #defines are stolen from drivers/pci/msi.h. */ | |
4107 | #define msi_control_reg(base) (base + PCI_MSI_FLAGS) | |
4108 | #define PCI_MSIX_FLAGS_ENABLE (1 << 15) | |
4109 | ||
4110 | int pos; | |
4111 | u16 control = 0; | |
4112 | ||
4113 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); | |
4114 | if (pos) { | |
4115 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
4116 | if (control & PCI_MSI_FLAGS_ENABLE) { | |
4117 | printk(KERN_INFO "cciss: resetting MSI\n"); | |
4118 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE); | |
4119 | } | |
4120 | } | |
4121 | ||
4122 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); | |
4123 | if (pos) { | |
4124 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
4125 | if (control & PCI_MSIX_FLAGS_ENABLE) { | |
4126 | printk(KERN_INFO "cciss: resetting MSI-X\n"); | |
4127 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE); | |
4128 | } | |
4129 | } | |
4130 | ||
4131 | return 0; | |
4132 | } | |
4133 | ||
4134 | /* This does a hard reset of the controller using PCI power management | |
4135 | * states. */ | |
4136 | static __devinit int cciss_hard_reset_controller(struct pci_dev *pdev) | |
4137 | { | |
4138 | u16 pmcsr, saved_config_space[32]; | |
4139 | int i, pos; | |
4140 | ||
4141 | printk(KERN_INFO "cciss: using PCI PM to reset controller\n"); | |
4142 | ||
4143 | /* This is very nearly the same thing as | |
4144 | ||
4145 | pci_save_state(pci_dev); | |
4146 | pci_set_power_state(pci_dev, PCI_D3hot); | |
4147 | pci_set_power_state(pci_dev, PCI_D0); | |
4148 | pci_restore_state(pci_dev); | |
4149 | ||
4150 | but we can't use these nice canned kernel routines on | |
4151 | kexec, because they also check the MSI/MSI-X state in PCI | |
4152 | configuration space and do the wrong thing when it is | |
4153 | set/cleared. Also, the pci_save/restore_state functions | |
4154 | violate the ordering requirements for restoring the | |
4155 | configuration space from the CCISS document (see the | |
4156 | comment below). So we roll our own .... */ | |
4157 | ||
4158 | for (i = 0; i < 32; i++) | |
4159 | pci_read_config_word(pdev, 2*i, &saved_config_space[i]); | |
4160 | ||
4161 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); | |
4162 | if (pos == 0) { | |
4163 | printk(KERN_ERR "cciss_reset_controller: PCI PM not supported\n"); | |
4164 | return -ENODEV; | |
4165 | } | |
4166 | ||
4167 | /* Quoting from the Open CISS Specification: "The Power | |
4168 | * Management Control/Status Register (CSR) controls the power | |
4169 | * state of the device. The normal operating state is D0, | |
4170 | * CSR=00h. The software off state is D3, CSR=03h. To reset | |
4171 | * the controller, place the interface device in D3 then to | |
4172 | * D0, this causes a secondary PCI reset which will reset the | |
4173 | * controller." */ | |
4174 | ||
4175 | /* enter the D3hot power management state */ | |
4176 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); | |
4177 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4178 | pmcsr |= PCI_D3hot; | |
4179 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
4180 | ||
4181 | schedule_timeout_uninterruptible(HZ >> 1); | |
4182 | ||
4183 | /* enter the D0 power management state */ | |
4184 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4185 | pmcsr |= PCI_D0; | |
4186 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
4187 | ||
4188 | schedule_timeout_uninterruptible(HZ >> 1); | |
4189 | ||
4190 | /* Restore the PCI configuration space. The Open CISS | |
4191 | * Specification says, "Restore the PCI Configuration | |
4192 | * Registers, offsets 00h through 60h. It is important to | |
4193 | * restore the command register, 16-bits at offset 04h, | |
4194 | * last. Do not restore the configuration status register, | |
4195 | * 16-bits at offset 06h." Note that the offset is 2*i. */ | |
4196 | for (i = 0; i < 32; i++) { | |
4197 | if (i == 2 || i == 3) | |
4198 | continue; | |
4199 | pci_write_config_word(pdev, 2*i, saved_config_space[i]); | |
4200 | } | |
4201 | wmb(); | |
4202 | pci_write_config_word(pdev, 4, saved_config_space[2]); | |
4203 | ||
4204 | return 0; | |
4205 | } | |
4206 | ||
1da177e4 LT |
4207 | /* |
4208 | * This is it. Find all the controllers and register them. I really hate | |
4209 | * stealing all these major device numbers. | |
4210 | * returns the number of block devices registered. | |
4211 | */ | |
4212 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 4213 | const struct pci_device_id *ent) |
1da177e4 | 4214 | { |
1da177e4 | 4215 | int i; |
799202cb | 4216 | int j = 0; |
1da177e4 | 4217 | int rc; |
22bece00 | 4218 | int dac, return_code; |
212a5026 | 4219 | InquiryData_struct *inq_buff; |
1da177e4 | 4220 | |
82eb03cf CC |
4221 | if (reset_devices) { |
4222 | /* Reset the controller with a PCI power-cycle */ | |
4223 | if (cciss_hard_reset_controller(pdev) || cciss_reset_msi(pdev)) | |
4224 | return -ENODEV; | |
4225 | ||
5e18cfd0 JA |
4226 | /* Now try to get the controller to respond to a no-op. Some |
4227 | devices (notably the HP Smart Array 5i Controller) need | |
4228 | up to 30 seconds to respond. */ | |
5e4c91c8 | 4229 | for (i=0; i<30; i++) { |
82eb03cf CC |
4230 | if (cciss_noop(pdev) == 0) |
4231 | break; | |
5e4c91c8 JA |
4232 | |
4233 | schedule_timeout_uninterruptible(HZ); | |
4234 | } | |
4235 | if (i == 30) { | |
4236 | printk(KERN_ERR "cciss: controller seems dead\n"); | |
4237 | return -EBUSY; | |
82eb03cf CC |
4238 | } |
4239 | } | |
4240 | ||
1da177e4 | 4241 | i = alloc_cciss_hba(); |
7c832835 | 4242 | if (i < 0) |
e2019b58 | 4243 | return -1; |
1f8ef380 MM |
4244 | |
4245 | hba[i]->busy_initializing = 1; | |
8a3173de JA |
4246 | INIT_HLIST_HEAD(&hba[i]->cmpQ); |
4247 | INIT_HLIST_HEAD(&hba[i]->reqQ); | |
b368c9dd | 4248 | mutex_init(&hba[i]->busy_shutting_down); |
1f8ef380 | 4249 | |
1da177e4 | 4250 | if (cciss_pci_init(hba[i], pdev) != 0) |
2cfa948c | 4251 | goto clean_no_release_regions; |
1da177e4 LT |
4252 | |
4253 | sprintf(hba[i]->devname, "cciss%d", i); | |
4254 | hba[i]->ctlr = i; | |
4255 | hba[i]->pdev = pdev; | |
4256 | ||
b368c9dd AP |
4257 | init_completion(&hba[i]->scan_wait); |
4258 | ||
7fe06326 AP |
4259 | if (cciss_create_hba_sysfs_entry(hba[i])) |
4260 | goto clean0; | |
4261 | ||
1da177e4 | 4262 | /* configure PCI DMA stuff */ |
6a35528a | 4263 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
40aabb58 | 4264 | dac = 1; |
284901a9 | 4265 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
40aabb58 | 4266 | dac = 0; |
1da177e4 | 4267 | else { |
40aabb58 | 4268 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
4269 | goto clean1; |
4270 | } | |
4271 | ||
4272 | /* | |
4273 | * register with the major number, or get a dynamic major number | |
4274 | * by passing 0 as argument. This is done for greater than | |
4275 | * 8 controller support. | |
4276 | */ | |
4277 | if (i < MAX_CTLR_ORIG) | |
564de74a | 4278 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 4279 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 4280 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 4281 | printk(KERN_ERR |
7c832835 BH |
4282 | "cciss: Unable to get major number %d for %s " |
4283 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 4284 | goto clean1; |
7c832835 | 4285 | } else { |
1da177e4 LT |
4286 | if (i >= MAX_CTLR_ORIG) |
4287 | hba[i]->major = rc; | |
4288 | } | |
4289 | ||
4290 | /* make sure the board interrupts are off */ | |
4291 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
7c832835 | 4292 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
69ab3912 | 4293 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
1da177e4 | 4294 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
7c832835 | 4295 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
1da177e4 LT |
4296 | goto clean2; |
4297 | } | |
40aabb58 BH |
4298 | |
4299 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 BH |
4300 | hba[i]->devname, pdev->device, pci_name(pdev), |
4301 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); | |
4302 | ||
4303 | hba[i]->cmd_pool_bits = | |
061837bc JL |
4304 | kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
4305 | * sizeof(unsigned long), GFP_KERNEL); | |
7c832835 BH |
4306 | hba[i]->cmd_pool = (CommandList_struct *) |
4307 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 4308 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
4309 | &(hba[i]->cmd_pool_dhandle)); |
4310 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
4311 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 4312 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
4313 | &(hba[i]->errinfo_pool_dhandle)); |
4314 | if ((hba[i]->cmd_pool_bits == NULL) | |
4315 | || (hba[i]->cmd_pool == NULL) | |
4316 | || (hba[i]->errinfo_pool == NULL)) { | |
4317 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
4318 | goto clean4; |
4319 | } | |
1da177e4 | 4320 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 4321 | |
7c832835 BH |
4322 | /* Initialize the pdev driver private data. |
4323 | have it point to hba[i]. */ | |
1da177e4 | 4324 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
4325 | /* command and error info recs zeroed out before |
4326 | they are used */ | |
4327 | memset(hba[i]->cmd_pool_bits, 0, | |
061837bc JL |
4328 | DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
4329 | * sizeof(unsigned long)); | |
1da177e4 | 4330 | |
6ae5ce8e MM |
4331 | hba[i]->num_luns = 0; |
4332 | hba[i]->highest_lun = -1; | |
4333 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
9cef0d2f | 4334 | hba[i]->drv[j] = NULL; |
6ae5ce8e MM |
4335 | hba[i]->gendisk[j] = NULL; |
4336 | } | |
1da177e4 LT |
4337 | |
4338 | cciss_scsi_setup(i); | |
4339 | ||
4340 | /* Turn the interrupts on so we can service requests */ | |
4341 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
4342 | ||
22bece00 MM |
4343 | /* Get the firmware version */ |
4344 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
4345 | if (inq_buff == NULL) { | |
4346 | printk(KERN_ERR "cciss: out of memory\n"); | |
4347 | goto clean4; | |
4348 | } | |
4349 | ||
4350 | return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff, | |
b57695fe | 4351 | sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); |
22bece00 MM |
4352 | if (return_code == IO_OK) { |
4353 | hba[i]->firm_ver[0] = inq_buff->data_byte[32]; | |
4354 | hba[i]->firm_ver[1] = inq_buff->data_byte[33]; | |
4355 | hba[i]->firm_ver[2] = inq_buff->data_byte[34]; | |
4356 | hba[i]->firm_ver[3] = inq_buff->data_byte[35]; | |
4357 | } else { /* send command failed */ | |
4358 | printk(KERN_WARNING "cciss: unable to determine firmware" | |
4359 | " version of controller\n"); | |
4360 | } | |
212a5026 | 4361 | kfree(inq_buff); |
22bece00 | 4362 | |
1da177e4 | 4363 | cciss_procinit(i); |
92c4231a MM |
4364 | |
4365 | hba[i]->cciss_max_sectors = 2048; | |
4366 | ||
2d11d993 | 4367 | rebuild_lun_table(hba[i], 1, 0); |
d6dbf42e | 4368 | hba[i]->busy_initializing = 0; |
e2019b58 | 4369 | return 1; |
1da177e4 | 4370 | |
6ae5ce8e | 4371 | clean4: |
6044ec88 | 4372 | kfree(hba[i]->cmd_pool_bits); |
7c832835 | 4373 | if (hba[i]->cmd_pool) |
1da177e4 | 4374 | pci_free_consistent(hba[i]->pdev, |
f880632f | 4375 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
4376 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
4377 | if (hba[i]->errinfo_pool) | |
1da177e4 | 4378 | pci_free_consistent(hba[i]->pdev, |
f880632f | 4379 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
4380 | hba[i]->errinfo_pool, |
4381 | hba[i]->errinfo_pool_dhandle); | |
fb86a35b | 4382 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
6ae5ce8e | 4383 | clean2: |
1da177e4 | 4384 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
6ae5ce8e | 4385 | clean1: |
7fe06326 AP |
4386 | cciss_destroy_hba_sysfs_entry(hba[i]); |
4387 | clean0: | |
2cfa948c SC |
4388 | pci_release_regions(pdev); |
4389 | clean_no_release_regions: | |
1f8ef380 | 4390 | hba[i]->busy_initializing = 0; |
9cef0d2f | 4391 | |
872225ca MM |
4392 | /* |
4393 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4394 | * Smart Array controllers that pci_enable_device does not undo | |
4395 | */ | |
799202cb | 4396 | pci_set_drvdata(pdev, NULL); |
61808c2b | 4397 | free_hba(i); |
e2019b58 | 4398 | return -1; |
1da177e4 LT |
4399 | } |
4400 | ||
e9ca75b5 | 4401 | static void cciss_shutdown(struct pci_dev *pdev) |
1da177e4 LT |
4402 | { |
4403 | ctlr_info_t *tmp_ptr; | |
e9ca75b5 | 4404 | int i; |
1da177e4 | 4405 | char flush_buf[4]; |
7c832835 | 4406 | int return_code; |
1da177e4 | 4407 | |
e9ca75b5 GB |
4408 | tmp_ptr = pci_get_drvdata(pdev); |
4409 | if (tmp_ptr == NULL) | |
4410 | return; | |
4411 | i = tmp_ptr->ctlr; | |
4412 | if (hba[i] == NULL) | |
4413 | return; | |
4414 | ||
4415 | /* Turn board interrupts off and send the flush cache command */ | |
4416 | /* sendcmd will turn off interrupt, and send the flush... | |
4417 | * To write all data in the battery backed cache to disks */ | |
4418 | memset(flush_buf, 0, 4); | |
b57695fe | 4419 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, |
4420 | CTLR_LUNID, TYPE_CMD); | |
e9ca75b5 GB |
4421 | if (return_code == IO_OK) { |
4422 | printk(KERN_INFO "Completed flushing cache on controller %d\n", i); | |
4423 | } else { | |
4424 | printk(KERN_WARNING "Error flushing cache on controller %d\n", i); | |
4425 | } | |
4426 | free_irq(hba[i]->intr[2], hba[i]); | |
4427 | } | |
4428 | ||
4429 | static void __devexit cciss_remove_one(struct pci_dev *pdev) | |
4430 | { | |
4431 | ctlr_info_t *tmp_ptr; | |
4432 | int i, j; | |
4433 | ||
7c832835 BH |
4434 | if (pci_get_drvdata(pdev) == NULL) { |
4435 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
4436 | return; |
4437 | } | |
0a9279cc | 4438 | |
1da177e4 LT |
4439 | tmp_ptr = pci_get_drvdata(pdev); |
4440 | i = tmp_ptr->ctlr; | |
7c832835 | 4441 | if (hba[i] == NULL) { |
1da177e4 | 4442 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 4443 | "already be removed \n"); |
1da177e4 LT |
4444 | return; |
4445 | } | |
b6550777 | 4446 | |
b368c9dd | 4447 | mutex_lock(&hba[i]->busy_shutting_down); |
0a9279cc | 4448 | |
b368c9dd | 4449 | remove_from_scan_list(hba[i]); |
b6550777 BH |
4450 | remove_proc_entry(hba[i]->devname, proc_cciss); |
4451 | unregister_blkdev(hba[i]->major, hba[i]->devname); | |
4452 | ||
4453 | /* remove it from the disk list */ | |
4454 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
4455 | struct gendisk *disk = hba[i]->gendisk[j]; | |
4456 | if (disk) { | |
165125e1 | 4457 | struct request_queue *q = disk->queue; |
b6550777 | 4458 | |
097d0264 | 4459 | if (disk->flags & GENHD_FL_UP) { |
8ce51966 | 4460 | cciss_destroy_ld_sysfs_entry(hba[i], j, 1); |
b6550777 | 4461 | del_gendisk(disk); |
097d0264 | 4462 | } |
b6550777 BH |
4463 | if (q) |
4464 | blk_cleanup_queue(q); | |
4465 | } | |
4466 | } | |
4467 | ||
ba198efb | 4468 | #ifdef CONFIG_CISS_SCSI_TAPE |
b6550777 | 4469 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
ba198efb | 4470 | #endif |
b6550777 | 4471 | |
e9ca75b5 | 4472 | cciss_shutdown(pdev); |
fb86a35b MM |
4473 | |
4474 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
4475 | if (hba[i]->msix_vector) |
4476 | pci_disable_msix(hba[i]->pdev); | |
4477 | else if (hba[i]->msi_vector) | |
4478 | pci_disable_msi(hba[i]->pdev); | |
4479 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 4480 | |
1da177e4 | 4481 | iounmap(hba[i]->vaddr); |
1da177e4 | 4482 | |
f880632f | 4483 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
1da177e4 | 4484 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
f880632f | 4485 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 | 4486 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
1da177e4 | 4487 | kfree(hba[i]->cmd_pool_bits); |
872225ca MM |
4488 | /* |
4489 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4490 | * Smart Array controllers that pci_enable_device does not undo | |
4491 | */ | |
7c832835 | 4492 | pci_release_regions(pdev); |
4e570309 | 4493 | pci_set_drvdata(pdev, NULL); |
7fe06326 | 4494 | cciss_destroy_hba_sysfs_entry(hba[i]); |
b368c9dd | 4495 | mutex_unlock(&hba[i]->busy_shutting_down); |
1da177e4 | 4496 | free_hba(i); |
7c832835 | 4497 | } |
1da177e4 LT |
4498 | |
4499 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
4500 | .name = "cciss", |
4501 | .probe = cciss_init_one, | |
4502 | .remove = __devexit_p(cciss_remove_one), | |
4503 | .id_table = cciss_pci_device_id, /* id_table */ | |
e9ca75b5 | 4504 | .shutdown = cciss_shutdown, |
1da177e4 LT |
4505 | }; |
4506 | ||
4507 | /* | |
4508 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 4509 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
4510 | */ |
4511 | static int __init cciss_init(void) | |
4512 | { | |
7fe06326 AP |
4513 | int err; |
4514 | ||
10cbda97 JA |
4515 | /* |
4516 | * The hardware requires that commands are aligned on a 64-bit | |
4517 | * boundary. Given that we use pci_alloc_consistent() to allocate an | |
4518 | * array of them, the size must be a multiple of 8 bytes. | |
4519 | */ | |
4520 | BUILD_BUG_ON(sizeof(CommandList_struct) % 8); | |
4521 | ||
1da177e4 LT |
4522 | printk(KERN_INFO DRIVER_NAME "\n"); |
4523 | ||
7fe06326 AP |
4524 | err = bus_register(&cciss_bus_type); |
4525 | if (err) | |
4526 | return err; | |
4527 | ||
b368c9dd AP |
4528 | /* Start the scan thread */ |
4529 | cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan"); | |
4530 | if (IS_ERR(cciss_scan_thread)) { | |
4531 | err = PTR_ERR(cciss_scan_thread); | |
4532 | goto err_bus_unregister; | |
4533 | } | |
4534 | ||
1da177e4 | 4535 | /* Register for our PCI devices */ |
7fe06326 AP |
4536 | err = pci_register_driver(&cciss_pci_driver); |
4537 | if (err) | |
b368c9dd | 4538 | goto err_thread_stop; |
7fe06326 | 4539 | |
617e1344 | 4540 | return err; |
7fe06326 | 4541 | |
b368c9dd AP |
4542 | err_thread_stop: |
4543 | kthread_stop(cciss_scan_thread); | |
4544 | err_bus_unregister: | |
7fe06326 | 4545 | bus_unregister(&cciss_bus_type); |
b368c9dd | 4546 | |
7fe06326 | 4547 | return err; |
1da177e4 LT |
4548 | } |
4549 | ||
4550 | static void __exit cciss_cleanup(void) | |
4551 | { | |
4552 | int i; | |
4553 | ||
4554 | pci_unregister_driver(&cciss_pci_driver); | |
4555 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
4556 | for (i = 0; i < MAX_CTLR; i++) { |
4557 | if (hba[i] != NULL) { | |
1da177e4 | 4558 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 4559 | " controller %d\n", i); |
1da177e4 LT |
4560 | cciss_remove_one(hba[i]->pdev); |
4561 | } | |
4562 | } | |
b368c9dd | 4563 | kthread_stop(cciss_scan_thread); |
928b4d8c | 4564 | remove_proc_entry("driver/cciss", NULL); |
7fe06326 | 4565 | bus_unregister(&cciss_bus_type); |
1da177e4 LT |
4566 | } |
4567 | ||
33079b21 MM |
4568 | static void fail_all_cmds(unsigned long ctlr) |
4569 | { | |
4570 | /* If we get here, the board is apparently dead. */ | |
4571 | ctlr_info_t *h = hba[ctlr]; | |
4572 | CommandList_struct *c; | |
4573 | unsigned long flags; | |
4574 | ||
4575 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); | |
7c832835 | 4576 | h->alive = 0; /* the controller apparently died... */ |
33079b21 MM |
4577 | |
4578 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
4579 | ||
7c832835 | 4580 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
33079b21 MM |
4581 | |
4582 | /* move everything off the request queue onto the completed queue */ | |
8a3173de JA |
4583 | while (!hlist_empty(&h->reqQ)) { |
4584 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); | |
4585 | removeQ(c); | |
33079b21 | 4586 | h->Qdepth--; |
8a3173de | 4587 | addQ(&h->cmpQ, c); |
33079b21 MM |
4588 | } |
4589 | ||
4590 | /* Now, fail everything on the completed queue with a HW error */ | |
8a3173de JA |
4591 | while (!hlist_empty(&h->cmpQ)) { |
4592 | c = hlist_entry(h->cmpQ.first, CommandList_struct, list); | |
4593 | removeQ(c); | |
b59e64d0 HR |
4594 | if (c->cmd_type != CMD_MSG_STALE) |
4595 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
33079b21 MM |
4596 | if (c->cmd_type == CMD_RWREQ) { |
4597 | complete_command(h, c, 0); | |
4598 | } else if (c->cmd_type == CMD_IOCTL_PEND) | |
4599 | complete(c->waiting); | |
4600 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
4601 | else if (c->cmd_type == CMD_SCSI) |
4602 | complete_scsi_command(c, 0, 0); | |
33079b21 MM |
4603 | #endif |
4604 | } | |
4605 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
4606 | return; | |
4607 | } | |
4608 | ||
1da177e4 LT |
4609 | module_init(cciss_init); |
4610 | module_exit(cciss_cleanup); |