Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Disk Array driver for HP SA 5xxx and 6xxx Controllers | |
fb86a35b | 3 | * Copyright 2000, 2006 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 | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
13 | * NON INFRINGEMENT. See the GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | * | |
19 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com | |
20 | * | |
21 | */ | |
22 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/types.h> | |
26 | #include <linux/pci.h> | |
27 | #include <linux/kernel.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/major.h> | |
31 | #include <linux/fs.h> | |
32 | #include <linux/bio.h> | |
33 | #include <linux/blkpg.h> | |
34 | #include <linux/timer.h> | |
35 | #include <linux/proc_fs.h> | |
7c832835 | 36 | #include <linux/init.h> |
1da177e4 LT |
37 | #include <linux/hdreg.h> |
38 | #include <linux/spinlock.h> | |
39 | #include <linux/compat.h> | |
2056a782 | 40 | #include <linux/blktrace_api.h> |
1da177e4 LT |
41 | #include <asm/uaccess.h> |
42 | #include <asm/io.h> | |
43 | ||
eb0df996 | 44 | #include <linux/dma-mapping.h> |
1da177e4 LT |
45 | #include <linux/blkdev.h> |
46 | #include <linux/genhd.h> | |
47 | #include <linux/completion.h> | |
d5d3b736 | 48 | #include <scsi/scsi.h> |
03bbfee5 MMOD |
49 | #include <scsi/sg.h> |
50 | #include <scsi/scsi_ioctl.h> | |
51 | #include <linux/cdrom.h> | |
1da177e4 LT |
52 | |
53 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) | |
9d827c9e MM |
54 | #define DRIVER_NAME "HP CISS Driver (v 3.6.14)" |
55 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3,6,14) | |
1da177e4 LT |
56 | |
57 | /* Embedded module documentation macros - see modules.h */ | |
58 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
9d827c9e | 59 | MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 3.6.14"); |
1da177e4 | 60 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
1883c5ab | 61 | " SA6i P600 P800 P400 P400i E200 E200i E500"); |
9d827c9e | 62 | MODULE_VERSION("3.6.14"); |
1da177e4 LT |
63 | MODULE_LICENSE("GPL"); |
64 | ||
65 | #include "cciss_cmd.h" | |
66 | #include "cciss.h" | |
67 | #include <linux/cciss_ioctl.h> | |
68 | ||
69 | /* define the PCI info for the cards we can control */ | |
70 | static const struct pci_device_id cciss_pci_device_id[] = { | |
f82ccdb9 BH |
71 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
72 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, | |
73 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, | |
74 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, | |
75 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, | |
76 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, | |
77 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, | |
78 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, | |
79 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, | |
80 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, | |
81 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, | |
82 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, | |
83 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, | |
84 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, | |
85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, | |
86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, | |
87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, | |
88 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, | |
de923916 | 89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, |
4ff9a9a4 MM |
90 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
91 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, | |
1da177e4 LT |
92 | {0,} |
93 | }; | |
7c832835 | 94 | |
1da177e4 LT |
95 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
96 | ||
1da177e4 LT |
97 | /* board_id = Subsystem Device ID & Vendor ID |
98 | * product = Marketing Name for the board | |
7c832835 | 99 | * access = Address of the struct of function pointers |
f880632f | 100 | * nr_cmds = Number of commands supported by controller |
1da177e4 LT |
101 | */ |
102 | static struct board_type products[] = { | |
f880632f MM |
103 | {0x40700E11, "Smart Array 5300", &SA5_access, 512}, |
104 | {0x40800E11, "Smart Array 5i", &SA5B_access, 512}, | |
105 | {0x40820E11, "Smart Array 532", &SA5B_access, 512}, | |
106 | {0x40830E11, "Smart Array 5312", &SA5B_access, 512}, | |
107 | {0x409A0E11, "Smart Array 641", &SA5_access, 512}, | |
108 | {0x409B0E11, "Smart Array 642", &SA5_access, 512}, | |
109 | {0x409C0E11, "Smart Array 6400", &SA5_access, 512}, | |
110 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access, 512}, | |
111 | {0x40910E11, "Smart Array 6i", &SA5_access, 512}, | |
112 | {0x3225103C, "Smart Array P600", &SA5_access, 512}, | |
113 | {0x3223103C, "Smart Array P800", &SA5_access, 512}, | |
114 | {0x3234103C, "Smart Array P400", &SA5_access, 512}, | |
115 | {0x3235103C, "Smart Array P400i", &SA5_access, 512}, | |
116 | {0x3211103C, "Smart Array E200i", &SA5_access, 120}, | |
117 | {0x3212103C, "Smart Array E200", &SA5_access, 120}, | |
118 | {0x3213103C, "Smart Array E200i", &SA5_access, 120}, | |
119 | {0x3214103C, "Smart Array E200i", &SA5_access, 120}, | |
120 | {0x3215103C, "Smart Array E200i", &SA5_access, 120}, | |
de923916 | 121 | {0x3237103C, "Smart Array E500", &SA5_access, 512}, |
f880632f | 122 | {0xFFFF103C, "Unknown Smart Array", &SA5_access, 120}, |
1da177e4 LT |
123 | }; |
124 | ||
d14c4ab5 | 125 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
7c832835 | 126 | #define MAX_CONFIG_WAIT 30000 |
1da177e4 LT |
127 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
128 | ||
129 | /*define how many times we will try a command because of bus resets */ | |
130 | #define MAX_CMD_RETRIES 3 | |
131 | ||
132 | #define READ_AHEAD 1024 | |
1da177e4 LT |
133 | #define MAX_CTLR 32 |
134 | ||
135 | /* Originally cciss driver only supports 8 major numbers */ | |
136 | #define MAX_CTLR_ORIG 8 | |
137 | ||
1da177e4 LT |
138 | static ctlr_info_t *hba[MAX_CTLR]; |
139 | ||
140 | static void do_cciss_request(request_queue_t *q); | |
7d12e780 | 141 | static irqreturn_t do_cciss_intr(int irq, void *dev_id); |
1da177e4 LT |
142 | static int cciss_open(struct inode *inode, struct file *filep); |
143 | static int cciss_release(struct inode *inode, struct file *filep); | |
7c832835 BH |
144 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
145 | unsigned int cmd, unsigned long arg); | |
a885c8c4 | 146 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 | 147 | |
1da177e4 | 148 | static int cciss_revalidate(struct gendisk *disk); |
ddd47442 | 149 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk); |
7c832835 BH |
150 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, |
151 | int clear_all); | |
1da177e4 | 152 | |
00988a35 MMOD |
153 | static void cciss_read_capacity(int ctlr, int logvol, int withirq, |
154 | sector_t *total_size, unsigned int *block_size); | |
155 | static void cciss_read_capacity_16(int ctlr, int logvol, int withirq, | |
156 | sector_t *total_size, unsigned int *block_size); | |
157 | static void cciss_geometry_inquiry(int ctlr, int logvol, | |
158 | int withirq, sector_t total_size, | |
159 | unsigned int block_size, InquiryData_struct *inq_buff, | |
7c832835 | 160 | drive_info_struct *drv); |
1da177e4 | 161 | static void cciss_getgeometry(int cntl_num); |
7c832835 BH |
162 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
163 | __u32); | |
164 | static void start_io(ctlr_info_t *h); | |
165 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, | |
166 | unsigned int use_unit_num, unsigned int log_unit, | |
167 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); | |
168 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, | |
169 | unsigned int use_unit_num, unsigned int log_unit, | |
170 | __u8 page_code, int cmd_type); | |
1da177e4 | 171 | |
33079b21 MM |
172 | static void fail_all_cmds(unsigned long ctlr); |
173 | ||
1da177e4 | 174 | #ifdef CONFIG_PROC_FS |
7c832835 BH |
175 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
176 | int length, int *eof, void *data); | |
1da177e4 LT |
177 | static void cciss_procinit(int i); |
178 | #else | |
7c832835 BH |
179 | static void cciss_procinit(int i) |
180 | { | |
181 | } | |
182 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
183 | |
184 | #ifdef CONFIG_COMPAT | |
185 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg); | |
186 | #endif | |
187 | ||
7c832835 BH |
188 | static struct block_device_operations cciss_fops = { |
189 | .owner = THIS_MODULE, | |
190 | .open = cciss_open, | |
191 | .release = cciss_release, | |
192 | .ioctl = cciss_ioctl, | |
193 | .getgeo = cciss_getgeo, | |
1da177e4 | 194 | #ifdef CONFIG_COMPAT |
7c832835 | 195 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 196 | #endif |
7c832835 | 197 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
198 | }; |
199 | ||
200 | /* | |
201 | * Enqueuing and dequeuing functions for cmdlists. | |
202 | */ | |
203 | static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c) | |
204 | { | |
7c832835 BH |
205 | if (*Qptr == NULL) { |
206 | *Qptr = c; | |
207 | c->next = c->prev = c; | |
208 | } else { | |
209 | c->prev = (*Qptr)->prev; | |
210 | c->next = (*Qptr); | |
211 | (*Qptr)->prev->next = c; | |
212 | (*Qptr)->prev = c; | |
213 | } | |
1da177e4 LT |
214 | } |
215 | ||
7c832835 BH |
216 | static inline CommandList_struct *removeQ(CommandList_struct **Qptr, |
217 | CommandList_struct *c) | |
1da177e4 | 218 | { |
7c832835 BH |
219 | if (c && c->next != c) { |
220 | if (*Qptr == c) | |
221 | *Qptr = c->next; | |
222 | c->prev->next = c->next; | |
223 | c->next->prev = c->prev; | |
224 | } else { | |
225 | *Qptr = NULL; | |
226 | } | |
227 | return c; | |
1da177e4 LT |
228 | } |
229 | ||
230 | #include "cciss_scsi.c" /* For SCSI tape support */ | |
231 | ||
0f5486ec RD |
232 | #define RAID_UNKNOWN 6 |
233 | ||
1da177e4 LT |
234 | #ifdef CONFIG_PROC_FS |
235 | ||
236 | /* | |
237 | * Report information about this controller. | |
238 | */ | |
239 | #define ENG_GIG 1000000000 | |
240 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
7c832835 BH |
241 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
242 | "UNKNOWN" | |
243 | }; | |
1da177e4 LT |
244 | |
245 | static struct proc_dir_entry *proc_cciss; | |
246 | ||
7c832835 BH |
247 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
248 | int length, int *eof, void *data) | |
1da177e4 | 249 | { |
7c832835 BH |
250 | off_t pos = 0; |
251 | off_t len = 0; | |
252 | int size, i, ctlr; | |
253 | ctlr_info_t *h = (ctlr_info_t *) data; | |
254 | drive_info_struct *drv; | |
1da177e4 | 255 | unsigned long flags; |
7c832835 | 256 | sector_t vol_sz, vol_sz_frac; |
1da177e4 | 257 | |
7c832835 | 258 | ctlr = h->ctlr; |
1da177e4 LT |
259 | |
260 | /* prevent displaying bogus info during configuration | |
261 | * or deconfiguration of a logical volume | |
262 | */ | |
263 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
264 | if (h->busy_configuring) { | |
265 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 266 | return -EBUSY; |
1da177e4 LT |
267 | } |
268 | h->busy_configuring = 1; | |
269 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
270 | ||
7c832835 BH |
271 | size = sprintf(buffer, "%s: HP %s Controller\n" |
272 | "Board ID: 0x%08lx\n" | |
273 | "Firmware Version: %c%c%c%c\n" | |
274 | "IRQ: %d\n" | |
275 | "Logical drives: %d\n" | |
92c4231a | 276 | "Max sectors: %d\n" |
7c832835 BH |
277 | "Current Q depth: %d\n" |
278 | "Current # commands on controller: %d\n" | |
279 | "Max Q depth since init: %d\n" | |
280 | "Max # commands on controller since init: %d\n" | |
281 | "Max SG entries since init: %d\n\n", | |
282 | h->devname, | |
283 | h->product_name, | |
284 | (unsigned long)h->board_id, | |
285 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
286 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], | |
92c4231a MM |
287 | h->num_luns, |
288 | h->cciss_max_sectors, | |
289 | h->Qdepth, h->commands_outstanding, | |
7c832835 BH |
290 | h->maxQsinceinit, h->max_outstanding, h->maxSG); |
291 | ||
292 | pos += size; | |
293 | len += size; | |
1da177e4 | 294 | cciss_proc_tape_report(ctlr, buffer, &pos, &len); |
7c832835 | 295 | for (i = 0; i <= h->highest_lun; i++) { |
1da177e4 | 296 | |
7c832835 | 297 | drv = &h->drv[i]; |
ddd47442 | 298 | if (drv->heads == 0) |
1da177e4 LT |
299 | continue; |
300 | ||
301 | vol_sz = drv->nr_blocks; | |
302 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
303 | vol_sz_frac *= 100; | |
304 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
305 | ||
306 | if (drv->raid_level > 5) | |
307 | drv->raid_level = RAID_UNKNOWN; | |
7c832835 BH |
308 | size = sprintf(buffer + len, "cciss/c%dd%d:" |
309 | "\t%4u.%02uGB\tRAID %s\n", | |
310 | ctlr, i, (int)vol_sz, (int)vol_sz_frac, | |
311 | raid_label[drv->raid_level]); | |
312 | pos += size; | |
313 | len += size; | |
314 | } | |
315 | ||
316 | *eof = 1; | |
317 | *start = buffer + offset; | |
318 | len -= offset; | |
319 | if (len > length) | |
320 | len = length; | |
1da177e4 | 321 | h->busy_configuring = 0; |
7c832835 | 322 | return len; |
1da177e4 LT |
323 | } |
324 | ||
7c832835 BH |
325 | static int |
326 | cciss_proc_write(struct file *file, const char __user *buffer, | |
327 | unsigned long count, void *data) | |
1da177e4 LT |
328 | { |
329 | unsigned char cmd[80]; | |
330 | int len; | |
331 | #ifdef CONFIG_CISS_SCSI_TAPE | |
332 | ctlr_info_t *h = (ctlr_info_t *) data; | |
333 | int rc; | |
334 | #endif | |
335 | ||
7c832835 BH |
336 | if (count > sizeof(cmd) - 1) |
337 | return -EINVAL; | |
338 | if (copy_from_user(cmd, buffer, count)) | |
339 | return -EFAULT; | |
1da177e4 LT |
340 | cmd[count] = '\0'; |
341 | len = strlen(cmd); // above 3 lines ensure safety | |
7c832835 | 342 | if (len && cmd[len - 1] == '\n') |
1da177e4 LT |
343 | cmd[--len] = '\0'; |
344 | # ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
345 | if (strcmp("engage scsi", cmd) == 0) { |
346 | rc = cciss_engage_scsi(h->ctlr); | |
347 | if (rc != 0) | |
348 | return -rc; | |
349 | return count; | |
350 | } | |
351 | /* might be nice to have "disengage" too, but it's not | |
352 | safely possible. (only 1 module use count, lock issues.) */ | |
1da177e4 LT |
353 | # endif |
354 | return -EINVAL; | |
355 | } | |
356 | ||
357 | /* | |
358 | * Get us a file in /proc/cciss that says something about each controller. | |
359 | * Create /proc/cciss if it doesn't exist yet. | |
360 | */ | |
361 | static void __devinit cciss_procinit(int i) | |
362 | { | |
363 | struct proc_dir_entry *pde; | |
364 | ||
7c832835 BH |
365 | if (proc_cciss == NULL) { |
366 | proc_cciss = proc_mkdir("cciss", proc_root_driver); | |
367 | if (!proc_cciss) | |
1da177e4 | 368 | return; |
7c832835 | 369 | } |
1da177e4 | 370 | |
7c832835 BH |
371 | pde = create_proc_read_entry(hba[i]->devname, |
372 | S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH, | |
373 | proc_cciss, cciss_proc_get_info, hba[i]); | |
1da177e4 LT |
374 | pde->write_proc = cciss_proc_write; |
375 | } | |
7c832835 | 376 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 377 | |
7c832835 BH |
378 | /* |
379 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 380 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
381 | * which ones are free or in use. For operations that can wait for kmalloc |
382 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
383 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
384 | */ | |
385 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
386 | { |
387 | CommandList_struct *c; | |
7c832835 | 388 | int i; |
1da177e4 LT |
389 | u64bit temp64; |
390 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
391 | ||
7c832835 BH |
392 | if (!get_from_pool) { |
393 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
394 | sizeof(CommandList_struct), &cmd_dma_handle); | |
395 | if (c == NULL) | |
396 | return NULL; | |
1da177e4 LT |
397 | memset(c, 0, sizeof(CommandList_struct)); |
398 | ||
33079b21 MM |
399 | c->cmdindex = -1; |
400 | ||
7c832835 BH |
401 | c->err_info = (ErrorInfo_struct *) |
402 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
403 | &err_dma_handle); | |
404 | ||
405 | if (c->err_info == NULL) { | |
406 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
407 | sizeof(CommandList_struct), c, cmd_dma_handle); |
408 | return NULL; | |
409 | } | |
410 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
411 | } else { /* get it out of the controllers pool */ |
412 | ||
413 | do { | |
f880632f MM |
414 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
415 | if (i == h->nr_cmds) | |
7c832835 BH |
416 | return NULL; |
417 | } while (test_and_set_bit | |
418 | (i & (BITS_PER_LONG - 1), | |
419 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
420 | #ifdef CCISS_DEBUG |
421 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
422 | #endif | |
7c832835 | 423 | c = h->cmd_pool + i; |
1da177e4 | 424 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
425 | cmd_dma_handle = h->cmd_pool_dhandle |
426 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
427 | c->err_info = h->errinfo_pool + i; |
428 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
429 | err_dma_handle = h->errinfo_pool_dhandle |
430 | + i * sizeof(ErrorInfo_struct); | |
431 | h->nr_allocs++; | |
33079b21 MM |
432 | |
433 | c->cmdindex = i; | |
7c832835 | 434 | } |
1da177e4 LT |
435 | |
436 | c->busaddr = (__u32) cmd_dma_handle; | |
7c832835 | 437 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
438 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
439 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
440 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 441 | |
7c832835 BH |
442 | c->ctlr = h->ctlr; |
443 | return c; | |
1da177e4 LT |
444 | } |
445 | ||
7c832835 BH |
446 | /* |
447 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
448 | */ |
449 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
450 | { | |
451 | int i; | |
452 | u64bit temp64; | |
453 | ||
7c832835 | 454 | if (!got_from_pool) { |
1da177e4 LT |
455 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
456 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
457 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
458 | c->err_info, (dma_addr_t) temp64.val); | |
459 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
460 | c, (dma_addr_t) c->busaddr); | |
461 | } else { | |
1da177e4 | 462 | i = c - h->cmd_pool; |
7c832835 BH |
463 | clear_bit(i & (BITS_PER_LONG - 1), |
464 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
465 | h->nr_frees++; | |
466 | } | |
1da177e4 LT |
467 | } |
468 | ||
469 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
470 | { | |
7c832835 | 471 | return disk->queue->queuedata; |
1da177e4 LT |
472 | } |
473 | ||
474 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
475 | { | |
476 | return disk->private_data; | |
477 | } | |
478 | ||
479 | /* | |
480 | * Open. Make sure the device is really there. | |
481 | */ | |
482 | static int cciss_open(struct inode *inode, struct file *filep) | |
483 | { | |
484 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
485 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
486 | ||
487 | #ifdef CCISS_DEBUG | |
488 | printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name); | |
7c832835 | 489 | #endif /* CCISS_DEBUG */ |
1da177e4 | 490 | |
ddd47442 MM |
491 | if (host->busy_initializing || drv->busy_configuring) |
492 | return -EBUSY; | |
1da177e4 LT |
493 | /* |
494 | * Root is allowed to open raw volume zero even if it's not configured | |
495 | * so array config can still work. Root is also allowed to open any | |
496 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
497 | * disk information. I don't think I really like this | |
498 | * but I'm already using way to many device nodes to claim another one | |
499 | * for "raw controller". | |
500 | */ | |
7a06f789 | 501 | if (drv->heads == 0) { |
7c832835 | 502 | if (iminor(inode) != 0) { /* not node 0? */ |
1da177e4 LT |
503 | /* if not node 0 make sure it is a partition = 0 */ |
504 | if (iminor(inode) & 0x0f) { | |
7c832835 | 505 | return -ENXIO; |
1da177e4 LT |
506 | /* if it is, make sure we have a LUN ID */ |
507 | } else if (drv->LunID == 0) { | |
508 | return -ENXIO; | |
509 | } | |
510 | } | |
511 | if (!capable(CAP_SYS_ADMIN)) | |
512 | return -EPERM; | |
513 | } | |
514 | drv->usage_count++; | |
515 | host->usage_count++; | |
516 | return 0; | |
517 | } | |
7c832835 | 518 | |
1da177e4 LT |
519 | /* |
520 | * Close. Sync first. | |
521 | */ | |
522 | static int cciss_release(struct inode *inode, struct file *filep) | |
523 | { | |
524 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
525 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
526 | ||
527 | #ifdef CCISS_DEBUG | |
7c832835 BH |
528 | printk(KERN_DEBUG "cciss_release %s\n", |
529 | inode->i_bdev->bd_disk->disk_name); | |
530 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
531 | |
532 | drv->usage_count--; | |
533 | host->usage_count--; | |
534 | return 0; | |
535 | } | |
536 | ||
537 | #ifdef CONFIG_COMPAT | |
538 | ||
539 | static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
540 | { | |
541 | int ret; | |
542 | lock_kernel(); | |
6c648be6 | 543 | ret = cciss_ioctl(f->f_path.dentry->d_inode, f, cmd, arg); |
1da177e4 LT |
544 | unlock_kernel(); |
545 | return ret; | |
546 | } | |
547 | ||
7c832835 BH |
548 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
549 | unsigned long arg); | |
550 | static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, | |
551 | unsigned long arg); | |
1da177e4 LT |
552 | |
553 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
554 | { | |
555 | switch (cmd) { | |
556 | case CCISS_GETPCIINFO: | |
557 | case CCISS_GETINTINFO: | |
558 | case CCISS_SETINTINFO: | |
559 | case CCISS_GETNODENAME: | |
560 | case CCISS_SETNODENAME: | |
561 | case CCISS_GETHEARTBEAT: | |
562 | case CCISS_GETBUSTYPES: | |
563 | case CCISS_GETFIRMVER: | |
564 | case CCISS_GETDRIVVER: | |
565 | case CCISS_REVALIDVOLS: | |
566 | case CCISS_DEREGDISK: | |
567 | case CCISS_REGNEWDISK: | |
568 | case CCISS_REGNEWD: | |
569 | case CCISS_RESCANDISK: | |
570 | case CCISS_GETLUNINFO: | |
571 | return do_ioctl(f, cmd, arg); | |
572 | ||
573 | case CCISS_PASSTHRU32: | |
574 | return cciss_ioctl32_passthru(f, cmd, arg); | |
575 | case CCISS_BIG_PASSTHRU32: | |
576 | return cciss_ioctl32_big_passthru(f, cmd, arg); | |
577 | ||
578 | default: | |
579 | return -ENOIOCTLCMD; | |
580 | } | |
581 | } | |
582 | ||
7c832835 BH |
583 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
584 | unsigned long arg) | |
1da177e4 LT |
585 | { |
586 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 587 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
588 | IOCTL_Command_struct arg64; |
589 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
590 | int err; | |
591 | u32 cp; | |
592 | ||
593 | err = 0; | |
7c832835 BH |
594 | err |= |
595 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
596 | sizeof(arg64.LUN_info)); | |
597 | err |= | |
598 | copy_from_user(&arg64.Request, &arg32->Request, | |
599 | sizeof(arg64.Request)); | |
600 | err |= | |
601 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
602 | sizeof(arg64.error_info)); | |
1da177e4 LT |
603 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
604 | err |= get_user(cp, &arg32->buf); | |
605 | arg64.buf = compat_ptr(cp); | |
606 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
607 | ||
608 | if (err) | |
609 | return -EFAULT; | |
610 | ||
7c832835 | 611 | err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
612 | if (err) |
613 | return err; | |
7c832835 BH |
614 | err |= |
615 | copy_in_user(&arg32->error_info, &p->error_info, | |
616 | sizeof(arg32->error_info)); | |
1da177e4 LT |
617 | if (err) |
618 | return -EFAULT; | |
619 | return err; | |
620 | } | |
621 | ||
7c832835 BH |
622 | static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, |
623 | unsigned long arg) | |
1da177e4 LT |
624 | { |
625 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 626 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 627 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
628 | BIG_IOCTL_Command_struct __user *p = |
629 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
630 | int err; |
631 | u32 cp; | |
632 | ||
633 | err = 0; | |
7c832835 BH |
634 | err |= |
635 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
636 | sizeof(arg64.LUN_info)); | |
637 | err |= | |
638 | copy_from_user(&arg64.Request, &arg32->Request, | |
639 | sizeof(arg64.Request)); | |
640 | err |= | |
641 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
642 | sizeof(arg64.error_info)); | |
1da177e4 LT |
643 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
644 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
645 | err |= get_user(cp, &arg32->buf); | |
646 | arg64.buf = compat_ptr(cp); | |
647 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
648 | ||
649 | if (err) | |
7c832835 | 650 | return -EFAULT; |
1da177e4 | 651 | |
7c832835 | 652 | err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
653 | if (err) |
654 | return err; | |
7c832835 BH |
655 | err |= |
656 | copy_in_user(&arg32->error_info, &p->error_info, | |
657 | sizeof(arg32->error_info)); | |
1da177e4 LT |
658 | if (err) |
659 | return -EFAULT; | |
660 | return err; | |
661 | } | |
662 | #endif | |
a885c8c4 CH |
663 | |
664 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
665 | { | |
666 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
667 | ||
668 | if (!drv->cylinders) | |
669 | return -ENXIO; | |
670 | ||
671 | geo->heads = drv->heads; | |
672 | geo->sectors = drv->sectors; | |
673 | geo->cylinders = drv->cylinders; | |
674 | return 0; | |
675 | } | |
676 | ||
1da177e4 | 677 | /* |
7c832835 | 678 | * ioctl |
1da177e4 | 679 | */ |
7c832835 BH |
680 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
681 | unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
682 | { |
683 | struct block_device *bdev = inode->i_bdev; | |
684 | struct gendisk *disk = bdev->bd_disk; | |
685 | ctlr_info_t *host = get_host(disk); | |
686 | drive_info_struct *drv = get_drv(disk); | |
687 | int ctlr = host->ctlr; | |
688 | void __user *argp = (void __user *)arg; | |
689 | ||
690 | #ifdef CCISS_DEBUG | |
691 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
692 | #endif /* CCISS_DEBUG */ |
693 | ||
694 | switch (cmd) { | |
1da177e4 | 695 | case CCISS_GETPCIINFO: |
7c832835 BH |
696 | { |
697 | cciss_pci_info_struct pciinfo; | |
698 | ||
699 | if (!arg) | |
700 | return -EINVAL; | |
701 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
702 | pciinfo.bus = host->pdev->bus->number; | |
703 | pciinfo.dev_fn = host->pdev->devfn; | |
704 | pciinfo.board_id = host->board_id; | |
705 | if (copy_to_user | |
706 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
707 | return -EFAULT; | |
708 | return 0; | |
709 | } | |
1da177e4 | 710 | case CCISS_GETINTINFO: |
7c832835 BH |
711 | { |
712 | cciss_coalint_struct intinfo; | |
713 | if (!arg) | |
714 | return -EINVAL; | |
715 | intinfo.delay = | |
716 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
717 | intinfo.count = | |
718 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
719 | if (copy_to_user | |
720 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
721 | return -EFAULT; | |
722 | return 0; | |
723 | } | |
1da177e4 | 724 | case CCISS_SETINTINFO: |
1da177e4 | 725 | { |
7c832835 BH |
726 | cciss_coalint_struct intinfo; |
727 | unsigned long flags; | |
728 | int i; | |
729 | ||
730 | if (!arg) | |
731 | return -EINVAL; | |
732 | if (!capable(CAP_SYS_ADMIN)) | |
733 | return -EPERM; | |
734 | if (copy_from_user | |
735 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
736 | return -EFAULT; | |
737 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
738 | { | |
739 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
740 | return -EINVAL; | |
741 | } | |
742 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
743 | /* Update the field, and then ring the doorbell */ | |
744 | writel(intinfo.delay, | |
745 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
746 | writel(intinfo.count, | |
747 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
748 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
749 | ||
750 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
751 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
752 | & CFGTBL_ChangeReq)) | |
753 | break; | |
754 | /* delay and try again */ | |
755 | udelay(1000); | |
756 | } | |
757 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
758 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
759 | return -EAGAIN; | |
760 | return 0; | |
1da177e4 | 761 | } |
1da177e4 | 762 | case CCISS_GETNODENAME: |
7c832835 BH |
763 | { |
764 | NodeName_type NodeName; | |
765 | int i; | |
766 | ||
767 | if (!arg) | |
768 | return -EINVAL; | |
769 | for (i = 0; i < 16; i++) | |
770 | NodeName[i] = | |
771 | readb(&host->cfgtable->ServerName[i]); | |
772 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
773 | return -EFAULT; | |
774 | return 0; | |
775 | } | |
1da177e4 | 776 | case CCISS_SETNODENAME: |
7c832835 BH |
777 | { |
778 | NodeName_type NodeName; | |
779 | unsigned long flags; | |
780 | int i; | |
781 | ||
782 | if (!arg) | |
783 | return -EINVAL; | |
784 | if (!capable(CAP_SYS_ADMIN)) | |
785 | return -EPERM; | |
786 | ||
787 | if (copy_from_user | |
788 | (NodeName, argp, sizeof(NodeName_type))) | |
789 | return -EFAULT; | |
790 | ||
791 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
792 | ||
793 | /* Update the field, and then ring the doorbell */ | |
794 | for (i = 0; i < 16; i++) | |
795 | writeb(NodeName[i], | |
796 | &host->cfgtable->ServerName[i]); | |
797 | ||
798 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
799 | ||
800 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
801 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
802 | & CFGTBL_ChangeReq)) | |
803 | break; | |
804 | /* delay and try again */ | |
805 | udelay(1000); | |
806 | } | |
807 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
808 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
809 | return -EAGAIN; | |
810 | return 0; | |
811 | } | |
1da177e4 LT |
812 | |
813 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
814 | { |
815 | Heartbeat_type heartbeat; | |
816 | ||
817 | if (!arg) | |
818 | return -EINVAL; | |
819 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
820 | if (copy_to_user | |
821 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
822 | return -EFAULT; | |
823 | return 0; | |
824 | } | |
1da177e4 | 825 | case CCISS_GETBUSTYPES: |
7c832835 BH |
826 | { |
827 | BusTypes_type BusTypes; | |
828 | ||
829 | if (!arg) | |
830 | return -EINVAL; | |
831 | BusTypes = readl(&host->cfgtable->BusTypes); | |
832 | if (copy_to_user | |
833 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
834 | return -EFAULT; | |
835 | return 0; | |
836 | } | |
1da177e4 | 837 | case CCISS_GETFIRMVER: |
7c832835 BH |
838 | { |
839 | FirmwareVer_type firmware; | |
1da177e4 | 840 | |
7c832835 BH |
841 | if (!arg) |
842 | return -EINVAL; | |
843 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 844 | |
7c832835 BH |
845 | if (copy_to_user |
846 | (argp, firmware, sizeof(FirmwareVer_type))) | |
847 | return -EFAULT; | |
848 | return 0; | |
849 | } | |
850 | case CCISS_GETDRIVVER: | |
851 | { | |
852 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 853 | |
7c832835 BH |
854 | if (!arg) |
855 | return -EINVAL; | |
1da177e4 | 856 | |
7c832835 BH |
857 | if (copy_to_user |
858 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
859 | return -EFAULT; | |
860 | return 0; | |
861 | } | |
1da177e4 LT |
862 | |
863 | case CCISS_REVALIDVOLS: | |
3833a748 | 864 | return rebuild_lun_table(host, NULL); |
7c832835 BH |
865 | |
866 | case CCISS_GETLUNINFO:{ | |
867 | LogvolInfo_struct luninfo; | |
868 | ||
869 | luninfo.LunID = drv->LunID; | |
870 | luninfo.num_opens = drv->usage_count; | |
871 | luninfo.num_parts = 0; | |
872 | if (copy_to_user(argp, &luninfo, | |
873 | sizeof(LogvolInfo_struct))) | |
874 | return -EFAULT; | |
875 | return 0; | |
876 | } | |
1da177e4 | 877 | case CCISS_DEREGDISK: |
ddd47442 | 878 | return rebuild_lun_table(host, disk); |
1da177e4 LT |
879 | |
880 | case CCISS_REGNEWD: | |
ddd47442 | 881 | return rebuild_lun_table(host, NULL); |
1da177e4 LT |
882 | |
883 | case CCISS_PASSTHRU: | |
1da177e4 | 884 | { |
7c832835 BH |
885 | IOCTL_Command_struct iocommand; |
886 | CommandList_struct *c; | |
887 | char *buff = NULL; | |
888 | u64bit temp64; | |
889 | unsigned long flags; | |
6e9a4738 | 890 | DECLARE_COMPLETION_ONSTACK(wait); |
1da177e4 | 891 | |
7c832835 BH |
892 | if (!arg) |
893 | return -EINVAL; | |
1da177e4 | 894 | |
7c832835 BH |
895 | if (!capable(CAP_SYS_RAWIO)) |
896 | return -EPERM; | |
1da177e4 | 897 | |
7c832835 BH |
898 | if (copy_from_user |
899 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
900 | return -EFAULT; | |
901 | if ((iocommand.buf_size < 1) && | |
902 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
903 | return -EINVAL; | |
904 | } | |
905 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
906 | /* Check kmalloc limits */ | |
907 | if (iocommand.buf_size > 128000) | |
908 | return -EINVAL; | |
909 | #endif | |
910 | if (iocommand.buf_size > 0) { | |
911 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
912 | if (buff == NULL) | |
913 | return -EFAULT; | |
914 | } | |
915 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
916 | /* Copy the data into the buffer we created */ | |
917 | if (copy_from_user | |
918 | (buff, iocommand.buf, iocommand.buf_size)) { | |
919 | kfree(buff); | |
920 | return -EFAULT; | |
921 | } | |
922 | } else { | |
923 | memset(buff, 0, iocommand.buf_size); | |
924 | } | |
925 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
926 | kfree(buff); | |
927 | return -ENOMEM; | |
928 | } | |
929 | // Fill in the command type | |
930 | c->cmd_type = CMD_IOCTL_PEND; | |
931 | // Fill in Command Header | |
932 | c->Header.ReplyQueue = 0; // unused in simple mode | |
933 | if (iocommand.buf_size > 0) // buffer to fill | |
934 | { | |
935 | c->Header.SGList = 1; | |
936 | c->Header.SGTotal = 1; | |
937 | } else // no buffers to fill | |
938 | { | |
939 | c->Header.SGList = 0; | |
940 | c->Header.SGTotal = 0; | |
941 | } | |
942 | c->Header.LUN = iocommand.LUN_info; | |
943 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag | |
1da177e4 | 944 | |
7c832835 BH |
945 | // Fill in Request block |
946 | c->Request = iocommand.Request; | |
1da177e4 | 947 | |
7c832835 BH |
948 | // Fill in the scatter gather information |
949 | if (iocommand.buf_size > 0) { | |
950 | temp64.val = pci_map_single(host->pdev, buff, | |
951 | iocommand.buf_size, | |
952 | PCI_DMA_BIDIRECTIONAL); | |
953 | c->SG[0].Addr.lower = temp64.val32.lower; | |
954 | c->SG[0].Addr.upper = temp64.val32.upper; | |
955 | c->SG[0].Len = iocommand.buf_size; | |
956 | c->SG[0].Ext = 0; // we are not chaining | |
957 | } | |
958 | c->waiting = &wait; | |
959 | ||
960 | /* Put the request on the tail of the request queue */ | |
961 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
962 | addQ(&host->reqQ, c); | |
963 | host->Qdepth++; | |
964 | start_io(host); | |
965 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
966 | ||
967 | wait_for_completion(&wait); | |
968 | ||
969 | /* unlock the buffers from DMA */ | |
970 | temp64.val32.lower = c->SG[0].Addr.lower; | |
971 | temp64.val32.upper = c->SG[0].Addr.upper; | |
972 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
973 | iocommand.buf_size, | |
974 | PCI_DMA_BIDIRECTIONAL); | |
975 | ||
976 | /* Copy the error information out */ | |
977 | iocommand.error_info = *(c->err_info); | |
978 | if (copy_to_user | |
979 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
980 | kfree(buff); | |
1da177e4 LT |
981 | cmd_free(host, c, 0); |
982 | return -EFAULT; | |
983 | } | |
7c832835 BH |
984 | |
985 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
986 | /* Copy the data out of the buffer we created */ | |
987 | if (copy_to_user | |
988 | (iocommand.buf, buff, iocommand.buf_size)) { | |
989 | kfree(buff); | |
990 | cmd_free(host, c, 0); | |
991 | return -EFAULT; | |
992 | } | |
993 | } | |
994 | kfree(buff); | |
995 | cmd_free(host, c, 0); | |
996 | return 0; | |
1da177e4 | 997 | } |
7c832835 BH |
998 | case CCISS_BIG_PASSTHRU:{ |
999 | BIG_IOCTL_Command_struct *ioc; | |
1000 | CommandList_struct *c; | |
1001 | unsigned char **buff = NULL; | |
1002 | int *buff_size = NULL; | |
1003 | u64bit temp64; | |
1004 | unsigned long flags; | |
1005 | BYTE sg_used = 0; | |
1006 | int status = 0; | |
1007 | int i; | |
6e9a4738 | 1008 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1009 | __u32 left; |
1010 | __u32 sz; | |
1011 | BYTE __user *data_ptr; | |
1012 | ||
1013 | if (!arg) | |
1014 | return -EINVAL; | |
1015 | if (!capable(CAP_SYS_RAWIO)) | |
1016 | return -EPERM; | |
1017 | ioc = (BIG_IOCTL_Command_struct *) | |
1018 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1019 | if (!ioc) { | |
1020 | status = -ENOMEM; | |
1021 | goto cleanup1; | |
1022 | } | |
1023 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1024 | status = -EFAULT; | |
1025 | goto cleanup1; | |
1026 | } | |
1027 | if ((ioc->buf_size < 1) && | |
1028 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1029 | status = -EINVAL; |
1030 | goto cleanup1; | |
7c832835 BH |
1031 | } |
1032 | /* Check kmalloc limits using all SGs */ | |
1033 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1034 | status = -EINVAL; | |
1035 | goto cleanup1; | |
1036 | } | |
1037 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1038 | status = -EINVAL; | |
1039 | goto cleanup1; | |
1040 | } | |
1041 | buff = | |
1042 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1043 | if (!buff) { | |
1da177e4 LT |
1044 | status = -ENOMEM; |
1045 | goto cleanup1; | |
1046 | } | |
5cbded58 | 1047 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
7c832835 BH |
1048 | GFP_KERNEL); |
1049 | if (!buff_size) { | |
1050 | status = -ENOMEM; | |
1051 | goto cleanup1; | |
1052 | } | |
1053 | left = ioc->buf_size; | |
1054 | data_ptr = ioc->buf; | |
1055 | while (left) { | |
1056 | sz = (left > | |
1057 | ioc->malloc_size) ? ioc-> | |
1058 | malloc_size : left; | |
1059 | buff_size[sg_used] = sz; | |
1060 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1061 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1062 | status = -ENOMEM; |
15534d38 JA |
1063 | goto cleanup1; |
1064 | } | |
7c832835 BH |
1065 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1066 | if (copy_from_user | |
1067 | (buff[sg_used], data_ptr, sz)) { | |
1068 | status = -ENOMEM; | |
1069 | goto cleanup1; | |
1070 | } | |
1071 | } else { | |
1072 | memset(buff[sg_used], 0, sz); | |
1073 | } | |
1074 | left -= sz; | |
1075 | data_ptr += sz; | |
1076 | sg_used++; | |
1077 | } | |
1078 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1079 | status = -ENOMEM; | |
1080 | goto cleanup1; | |
1081 | } | |
1082 | c->cmd_type = CMD_IOCTL_PEND; | |
1083 | c->Header.ReplyQueue = 0; | |
1084 | ||
1085 | if (ioc->buf_size > 0) { | |
1086 | c->Header.SGList = sg_used; | |
1087 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1088 | } else { |
7c832835 BH |
1089 | c->Header.SGList = 0; |
1090 | c->Header.SGTotal = 0; | |
1da177e4 | 1091 | } |
7c832835 BH |
1092 | c->Header.LUN = ioc->LUN_info; |
1093 | c->Header.Tag.lower = c->busaddr; | |
1094 | ||
1095 | c->Request = ioc->Request; | |
1096 | if (ioc->buf_size > 0) { | |
1097 | int i; | |
1098 | for (i = 0; i < sg_used; i++) { | |
1099 | temp64.val = | |
1100 | pci_map_single(host->pdev, buff[i], | |
1101 | buff_size[i], | |
1102 | PCI_DMA_BIDIRECTIONAL); | |
1103 | c->SG[i].Addr.lower = | |
1104 | temp64.val32.lower; | |
1105 | c->SG[i].Addr.upper = | |
1106 | temp64.val32.upper; | |
1107 | c->SG[i].Len = buff_size[i]; | |
1108 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1109 | } | |
1110 | } | |
1111 | c->waiting = &wait; | |
1112 | /* Put the request on the tail of the request queue */ | |
1113 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1114 | addQ(&host->reqQ, c); | |
1115 | host->Qdepth++; | |
1116 | start_io(host); | |
1117 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1118 | wait_for_completion(&wait); | |
1119 | /* unlock the buffers from DMA */ | |
1120 | for (i = 0; i < sg_used; i++) { | |
1121 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1122 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1123 | pci_unmap_single(host->pdev, | |
1124 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1125 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1126 | } |
7c832835 BH |
1127 | /* Copy the error information out */ |
1128 | ioc->error_info = *(c->err_info); | |
1129 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1130 | cmd_free(host, c, 0); | |
1131 | status = -EFAULT; | |
1132 | goto cleanup1; | |
1133 | } | |
1134 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1135 | /* Copy the data out of the buffer we created */ | |
1136 | BYTE __user *ptr = ioc->buf; | |
1137 | for (i = 0; i < sg_used; i++) { | |
1138 | if (copy_to_user | |
1139 | (ptr, buff[i], buff_size[i])) { | |
1140 | cmd_free(host, c, 0); | |
1141 | status = -EFAULT; | |
1142 | goto cleanup1; | |
1143 | } | |
1144 | ptr += buff_size[i]; | |
1da177e4 | 1145 | } |
1da177e4 | 1146 | } |
7c832835 BH |
1147 | cmd_free(host, c, 0); |
1148 | status = 0; | |
1149 | cleanup1: | |
1150 | if (buff) { | |
1151 | for (i = 0; i < sg_used; i++) | |
1152 | kfree(buff[i]); | |
1153 | kfree(buff); | |
1154 | } | |
1155 | kfree(buff_size); | |
1156 | kfree(ioc); | |
1157 | return status; | |
1da177e4 | 1158 | } |
03bbfee5 MMOD |
1159 | |
1160 | /* scsi_cmd_ioctl handles these, below, though some are not */ | |
1161 | /* very meaningful for cciss. SG_IO is the main one people want. */ | |
1162 | ||
1163 | case SG_GET_VERSION_NUM: | |
1164 | case SG_SET_TIMEOUT: | |
1165 | case SG_GET_TIMEOUT: | |
1166 | case SG_GET_RESERVED_SIZE: | |
1167 | case SG_SET_RESERVED_SIZE: | |
1168 | case SG_EMULATED_HOST: | |
1169 | case SG_IO: | |
1170 | case SCSI_IOCTL_SEND_COMMAND: | |
1171 | return scsi_cmd_ioctl(filep, disk, cmd, argp); | |
1172 | ||
1173 | /* scsi_cmd_ioctl would normally handle these, below, but */ | |
1174 | /* they aren't a good fit for cciss, as CD-ROMs are */ | |
1175 | /* not supported, and we don't have any bus/target/lun */ | |
1176 | /* which we present to the kernel. */ | |
1177 | ||
1178 | case CDROM_SEND_PACKET: | |
1179 | case CDROMCLOSETRAY: | |
1180 | case CDROMEJECT: | |
1181 | case SCSI_IOCTL_GET_IDLUN: | |
1182 | case SCSI_IOCTL_GET_BUS_NUMBER: | |
1da177e4 LT |
1183 | default: |
1184 | return -ENOTTY; | |
1185 | } | |
1da177e4 LT |
1186 | } |
1187 | ||
ca1e0484 MM |
1188 | static inline void complete_buffers(struct bio *bio, int status) |
1189 | { | |
1190 | while (bio) { | |
1191 | struct bio *xbh = bio->bi_next; | |
1192 | int nr_sectors = bio_sectors(bio); | |
1193 | ||
1194 | bio->bi_next = NULL; | |
ca1e0484 MM |
1195 | bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO); |
1196 | bio = xbh; | |
1197 | } | |
ca1e0484 MM |
1198 | } |
1199 | ||
7b30f092 JA |
1200 | static void cciss_check_queues(ctlr_info_t *h) |
1201 | { | |
1202 | int start_queue = h->next_to_run; | |
1203 | int i; | |
1204 | ||
1205 | /* check to see if we have maxed out the number of commands that can | |
1206 | * be placed on the queue. If so then exit. We do this check here | |
1207 | * in case the interrupt we serviced was from an ioctl and did not | |
1208 | * free any new commands. | |
1209 | */ | |
f880632f | 1210 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1211 | return; |
1212 | ||
1213 | /* We have room on the queue for more commands. Now we need to queue | |
1214 | * them up. We will also keep track of the next queue to run so | |
1215 | * that every queue gets a chance to be started first. | |
1216 | */ | |
1217 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1218 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1219 | /* make sure the disk has been added and the drive is real | |
1220 | * because this can be called from the middle of init_one. | |
1221 | */ | |
1222 | if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads)) | |
1223 | continue; | |
1224 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1225 | ||
1226 | /* check to see if we have maxed out the number of commands | |
1227 | * that can be placed on the queue. | |
1228 | */ | |
f880632f | 1229 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1230 | if (curr_queue == start_queue) { |
1231 | h->next_to_run = | |
1232 | (start_queue + 1) % (h->highest_lun + 1); | |
1233 | break; | |
1234 | } else { | |
1235 | h->next_to_run = curr_queue; | |
1236 | break; | |
1237 | } | |
1238 | } else { | |
1239 | curr_queue = (curr_queue + 1) % (h->highest_lun + 1); | |
1240 | } | |
1241 | } | |
1242 | } | |
1243 | ||
ca1e0484 MM |
1244 | static void cciss_softirq_done(struct request *rq) |
1245 | { | |
1246 | CommandList_struct *cmd = rq->completion_data; | |
1247 | ctlr_info_t *h = hba[cmd->ctlr]; | |
1248 | unsigned long flags; | |
1249 | u64bit temp64; | |
1250 | int i, ddir; | |
1251 | ||
1252 | if (cmd->Request.Type.Direction == XFER_READ) | |
1253 | ddir = PCI_DMA_FROMDEVICE; | |
1254 | else | |
1255 | ddir = PCI_DMA_TODEVICE; | |
1256 | ||
1257 | /* command did not need to be retried */ | |
1258 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1259 | for (i = 0; i < cmd->Header.SGList; i++) { |
ca1e0484 MM |
1260 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
1261 | temp64.val32.upper = cmd->SG[i].Addr.upper; | |
1262 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); | |
1263 | } | |
1264 | ||
198b7660 | 1265 | complete_buffers(rq->bio, (rq->errors == 0)); |
ca1e0484 | 1266 | |
b369c2cf JA |
1267 | if (blk_fs_request(rq)) { |
1268 | const int rw = rq_data_dir(rq); | |
1269 | ||
1270 | disk_stat_add(rq->rq_disk, sectors[rw], rq->nr_sectors); | |
1271 | } | |
1272 | ||
ca1e0484 MM |
1273 | #ifdef CCISS_DEBUG |
1274 | printk("Done with %p\n", rq); | |
7c832835 | 1275 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1276 | |
8bd0b97e | 1277 | add_disk_randomness(rq->rq_disk); |
ca1e0484 | 1278 | spin_lock_irqsave(&h->lock, flags); |
198b7660 | 1279 | end_that_request_last(rq, (rq->errors == 0)); |
7c832835 | 1280 | cmd_free(h, cmd, 1); |
7b30f092 | 1281 | cciss_check_queues(h); |
ca1e0484 MM |
1282 | spin_unlock_irqrestore(&h->lock, flags); |
1283 | } | |
1284 | ||
ddd47442 MM |
1285 | /* This function will check the usage_count of the drive to be updated/added. |
1286 | * If the usage_count is zero then the drive information will be updated and | |
1287 | * the disk will be re-registered with the kernel. If not then it will be | |
1288 | * left alone for the next reboot. The exception to this is disk 0 which | |
1289 | * will always be left registered with the kernel since it is also the | |
1290 | * controller node. Any changes to disk 0 will show up on the next | |
1291 | * reboot. | |
7c832835 | 1292 | */ |
ddd47442 | 1293 | static void cciss_update_drive_info(int ctlr, int drv_index) |
7c832835 | 1294 | { |
ddd47442 MM |
1295 | ctlr_info_t *h = hba[ctlr]; |
1296 | struct gendisk *disk; | |
ddd47442 MM |
1297 | InquiryData_struct *inq_buff = NULL; |
1298 | unsigned int block_size; | |
00988a35 | 1299 | sector_t total_size; |
ddd47442 MM |
1300 | unsigned long flags = 0; |
1301 | int ret = 0; | |
1302 | ||
7c832835 BH |
1303 | /* if the disk already exists then deregister it before proceeding */ |
1304 | if (h->drv[drv_index].raid_level != -1) { | |
ddd47442 MM |
1305 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
1306 | h->drv[drv_index].busy_configuring = 1; | |
1307 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1308 | ret = deregister_disk(h->gendisk[drv_index], | |
7c832835 | 1309 | &h->drv[drv_index], 0); |
ddd47442 MM |
1310 | h->drv[drv_index].busy_configuring = 0; |
1311 | } | |
1312 | ||
1313 | /* If the disk is in use return */ | |
1314 | if (ret) | |
1315 | return; | |
1316 | ||
d14c4ab5 | 1317 | /* Get information about the disk and modify the driver structure */ |
7c832835 | 1318 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
ddd47442 MM |
1319 | if (inq_buff == NULL) |
1320 | goto mem_msg; | |
1321 | ||
97c06978 MMOD |
1322 | /* testing to see if 16-byte CDBs are already being used */ |
1323 | if (h->cciss_read == CCISS_READ_16) { | |
1324 | cciss_read_capacity_16(h->ctlr, drv_index, 1, | |
1325 | &total_size, &block_size); | |
1326 | goto geo_inq; | |
1327 | } | |
1328 | ||
00988a35 | 1329 | cciss_read_capacity(ctlr, drv_index, 1, |
7c832835 | 1330 | &total_size, &block_size); |
00988a35 | 1331 | |
97c06978 MMOD |
1332 | /* if read_capacity returns all F's this volume is >2TB in size */ |
1333 | /* so we switch to 16-byte CDB's for all read/write ops */ | |
1334 | if (total_size == 0xFFFFFFFFULL) { | |
00988a35 MMOD |
1335 | cciss_read_capacity_16(ctlr, drv_index, 1, |
1336 | &total_size, &block_size); | |
1337 | h->cciss_read = CCISS_READ_16; | |
1338 | h->cciss_write = CCISS_WRITE_16; | |
1339 | } else { | |
1340 | h->cciss_read = CCISS_READ_10; | |
1341 | h->cciss_write = CCISS_WRITE_10; | |
1342 | } | |
97c06978 | 1343 | geo_inq: |
ddd47442 | 1344 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, |
7c832835 | 1345 | inq_buff, &h->drv[drv_index]); |
ddd47442 MM |
1346 | |
1347 | ++h->num_luns; | |
1348 | disk = h->gendisk[drv_index]; | |
1349 | set_capacity(disk, h->drv[drv_index].nr_blocks); | |
1350 | ||
ddd47442 | 1351 | /* if it's the controller it's already added */ |
7c832835 | 1352 | if (drv_index) { |
ddd47442 | 1353 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
799202cb MM |
1354 | sprintf(disk->disk_name, "cciss/c%dd%d", ctlr, drv_index); |
1355 | disk->major = h->major; | |
1356 | disk->first_minor = drv_index << NWD_SHIFT; | |
1357 | disk->fops = &cciss_fops; | |
1358 | disk->private_data = &h->drv[drv_index]; | |
ddd47442 MM |
1359 | |
1360 | /* Set up queue information */ | |
1361 | disk->queue->backing_dev_info.ra_pages = READ_AHEAD; | |
1362 | blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask); | |
1363 | ||
1364 | /* This is a hardware imposed limit. */ | |
1365 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); | |
1366 | ||
1367 | /* This is a limit in the driver and could be eliminated. */ | |
1368 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); | |
1369 | ||
92c4231a | 1370 | blk_queue_max_sectors(disk->queue, h->cciss_max_sectors); |
ddd47442 | 1371 | |
ca1e0484 MM |
1372 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
1373 | ||
ddd47442 MM |
1374 | disk->queue->queuedata = hba[ctlr]; |
1375 | ||
1376 | blk_queue_hardsect_size(disk->queue, | |
7c832835 | 1377 | hba[ctlr]->drv[drv_index].block_size); |
ddd47442 MM |
1378 | |
1379 | h->drv[drv_index].queue = disk->queue; | |
1380 | add_disk(disk); | |
1381 | } | |
1382 | ||
7c832835 | 1383 | freeret: |
ddd47442 MM |
1384 | kfree(inq_buff); |
1385 | return; | |
7c832835 | 1386 | mem_msg: |
ddd47442 MM |
1387 | printk(KERN_ERR "cciss: out of memory\n"); |
1388 | goto freeret; | |
1389 | } | |
1390 | ||
1391 | /* This function will find the first index of the controllers drive array | |
1392 | * that has a -1 for the raid_level and will return that index. This is | |
1393 | * where new drives will be added. If the index to be returned is greater | |
1394 | * than the highest_lun index for the controller then highest_lun is set | |
1395 | * to this new index. If there are no available indexes then -1 is returned. | |
7c832835 | 1396 | */ |
ddd47442 MM |
1397 | static int cciss_find_free_drive_index(int ctlr) |
1398 | { | |
1399 | int i; | |
1400 | ||
7c832835 BH |
1401 | for (i = 0; i < CISS_MAX_LUN; i++) { |
1402 | if (hba[ctlr]->drv[i].raid_level == -1) { | |
ddd47442 MM |
1403 | if (i > hba[ctlr]->highest_lun) |
1404 | hba[ctlr]->highest_lun = i; | |
1405 | return i; | |
1406 | } | |
1407 | } | |
1408 | return -1; | |
1409 | } | |
1410 | ||
1411 | /* This function will add and remove logical drives from the Logical | |
d14c4ab5 | 1412 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
1413 | * so that mount points are preserved until the next reboot. This allows |
1414 | * for the removal of logical drives in the middle of the drive array | |
1415 | * without a re-ordering of those drives. | |
1416 | * INPUT | |
1417 | * h = The controller to perform the operations on | |
1418 | * del_disk = The disk to remove if specified. If the value given | |
1419 | * is NULL then no disk is removed. | |
7c832835 | 1420 | */ |
ddd47442 | 1421 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk) |
1da177e4 | 1422 | { |
ddd47442 MM |
1423 | int ctlr = h->ctlr; |
1424 | int num_luns; | |
1425 | ReportLunData_struct *ld_buff = NULL; | |
1426 | drive_info_struct *drv = NULL; | |
1427 | int return_code; | |
1428 | int listlength = 0; | |
1429 | int i; | |
1430 | int drv_found; | |
1431 | int drv_index = 0; | |
1432 | __u32 lunid = 0; | |
1da177e4 | 1433 | unsigned long flags; |
ddd47442 MM |
1434 | |
1435 | /* Set busy_configuring flag for this operation */ | |
1436 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 1437 | if (h->busy_configuring) { |
ddd47442 MM |
1438 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
1439 | return -EBUSY; | |
1440 | } | |
1441 | h->busy_configuring = 1; | |
1442 | ||
1443 | /* if del_disk is NULL then we are being called to add a new disk | |
1444 | * and update the logical drive table. If it is not NULL then | |
1445 | * we will check if the disk is in use or not. | |
1446 | */ | |
7c832835 | 1447 | if (del_disk != NULL) { |
ddd47442 MM |
1448 | drv = get_drv(del_disk); |
1449 | drv->busy_configuring = 1; | |
1450 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1451 | return_code = deregister_disk(del_disk, drv, 1); | |
1452 | drv->busy_configuring = 0; | |
1453 | h->busy_configuring = 0; | |
1454 | return return_code; | |
1455 | } else { | |
1456 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1457 | if (!capable(CAP_SYS_RAWIO)) | |
1458 | return -EPERM; | |
1459 | ||
1460 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); | |
1461 | if (ld_buff == NULL) | |
1462 | goto mem_msg; | |
1463 | ||
1464 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
7c832835 BH |
1465 | sizeof(ReportLunData_struct), 0, |
1466 | 0, 0, TYPE_CMD); | |
1467 | ||
1468 | if (return_code == IO_OK) { | |
799202cb | 1469 | listlength = |
4c1f2b31 | 1470 | be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); |
7c832835 | 1471 | } else { /* reading number of logical volumes failed */ |
ddd47442 | 1472 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 1473 | " command failed\n"); |
ddd47442 MM |
1474 | listlength = 0; |
1475 | goto freeret; | |
1476 | } | |
1477 | ||
1478 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
7c832835 | 1479 | if (num_luns > CISS_MAX_LUN) { |
ddd47442 MM |
1480 | num_luns = CISS_MAX_LUN; |
1481 | printk(KERN_WARNING "cciss: more luns configured" | |
7c832835 BH |
1482 | " on controller than can be handled by" |
1483 | " this driver.\n"); | |
ddd47442 MM |
1484 | } |
1485 | ||
1486 | /* Compare controller drive array to drivers drive array. | |
7c832835 BH |
1487 | * Check for updates in the drive information and any new drives |
1488 | * on the controller. | |
1489 | */ | |
1490 | for (i = 0; i < num_luns; i++) { | |
ddd47442 MM |
1491 | int j; |
1492 | ||
1493 | drv_found = 0; | |
1494 | ||
7c832835 BH |
1495 | lunid = (0xff & |
1496 | (unsigned int)(ld_buff->LUN[i][3])) << 24; | |
1497 | lunid |= (0xff & | |
1498 | (unsigned int)(ld_buff->LUN[i][2])) << 16; | |
1499 | lunid |= (0xff & | |
1500 | (unsigned int)(ld_buff->LUN[i][1])) << 8; | |
1501 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
ddd47442 MM |
1502 | |
1503 | /* Find if the LUN is already in the drive array | |
1504 | * of the controller. If so then update its info | |
1505 | * if not is use. If it does not exist then find | |
1506 | * the first free index and add it. | |
7c832835 BH |
1507 | */ |
1508 | for (j = 0; j <= h->highest_lun; j++) { | |
1509 | if (h->drv[j].LunID == lunid) { | |
ddd47442 MM |
1510 | drv_index = j; |
1511 | drv_found = 1; | |
1512 | } | |
1513 | } | |
1514 | ||
1515 | /* check if the drive was found already in the array */ | |
7c832835 | 1516 | if (!drv_found) { |
ddd47442 MM |
1517 | drv_index = cciss_find_free_drive_index(ctlr); |
1518 | if (drv_index == -1) | |
1519 | goto freeret; | |
1520 | ||
799202cb MM |
1521 | /*Check if the gendisk needs to be allocated */ |
1522 | if (!h->gendisk[drv_index]){ | |
1523 | h->gendisk[drv_index] = alloc_disk(1 << NWD_SHIFT); | |
1524 | if (!h->gendisk[drv_index]){ | |
1525 | printk(KERN_ERR "cciss: could not allocate new disk %d\n", drv_index); | |
1526 | goto mem_msg; | |
1527 | } | |
1528 | } | |
ddd47442 MM |
1529 | } |
1530 | h->drv[drv_index].LunID = lunid; | |
1531 | cciss_update_drive_info(ctlr, drv_index); | |
7c832835 BH |
1532 | } /* end for */ |
1533 | } /* end else */ | |
ddd47442 | 1534 | |
7c832835 | 1535 | freeret: |
ddd47442 MM |
1536 | kfree(ld_buff); |
1537 | h->busy_configuring = 0; | |
1538 | /* We return -1 here to tell the ACU that we have registered/updated | |
1539 | * all of the drives that we can and to keep it from calling us | |
1540 | * additional times. | |
7c832835 | 1541 | */ |
ddd47442 | 1542 | return -1; |
7c832835 | 1543 | mem_msg: |
ddd47442 MM |
1544 | printk(KERN_ERR "cciss: out of memory\n"); |
1545 | goto freeret; | |
1546 | } | |
1547 | ||
1548 | /* This function will deregister the disk and it's queue from the | |
1549 | * kernel. It must be called with the controller lock held and the | |
1550 | * drv structures busy_configuring flag set. It's parameters are: | |
1551 | * | |
1552 | * disk = This is the disk to be deregistered | |
1553 | * drv = This is the drive_info_struct associated with the disk to be | |
1554 | * deregistered. It contains information about the disk used | |
1555 | * by the driver. | |
1556 | * clear_all = This flag determines whether or not the disk information | |
1557 | * is going to be completely cleared out and the highest_lun | |
1558 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 1559 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
1560 | * the highest_lun should be left unchanged and the LunID |
1561 | * should not be cleared. | |
1562 | */ | |
1563 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, | |
1564 | int clear_all) | |
1565 | { | |
799202cb | 1566 | int i; |
1da177e4 | 1567 | ctlr_info_t *h = get_host(disk); |
1da177e4 LT |
1568 | |
1569 | if (!capable(CAP_SYS_RAWIO)) | |
1570 | return -EPERM; | |
1571 | ||
1da177e4 | 1572 | /* make sure logical volume is NOT is use */ |
7c832835 BH |
1573 | if (clear_all || (h->gendisk[0] == disk)) { |
1574 | if (drv->usage_count > 1) | |
1575 | return -EBUSY; | |
1576 | } else if (drv->usage_count > 0) | |
1577 | return -EBUSY; | |
1da177e4 | 1578 | |
ddd47442 MM |
1579 | /* invalidate the devices and deregister the disk. If it is disk |
1580 | * zero do not deregister it but just zero out it's values. This | |
1581 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
1582 | */ |
1583 | if (h->gendisk[0] != disk) { | |
6f5a0f7c | 1584 | if (disk) { |
1585 | request_queue_t *q = disk->queue; | |
1586 | if (disk->flags & GENHD_FL_UP) | |
1587 | del_gendisk(disk); | |
2f6331fa | 1588 | if (q) { |
6f5a0f7c | 1589 | blk_cleanup_queue(q); |
799202cb MM |
1590 | /* Set drv->queue to NULL so that we do not try |
1591 | * to call blk_start_queue on this queue in the | |
1592 | * interrupt handler | |
1593 | */ | |
2f6331fa MM |
1594 | drv->queue = NULL; |
1595 | } | |
799202cb MM |
1596 | /* If clear_all is set then we are deleting the logical |
1597 | * drive, not just refreshing its info. For drives | |
1598 | * other than disk 0 we will call put_disk. We do not | |
1599 | * do this for disk 0 as we need it to be able to | |
1600 | * configure the controller. | |
1601 | */ | |
1602 | if (clear_all){ | |
1603 | /* This isn't pretty, but we need to find the | |
1604 | * disk in our array and NULL our the pointer. | |
1605 | * This is so that we will call alloc_disk if | |
1606 | * this index is used again later. | |
1607 | */ | |
1608 | for (i=0; i < CISS_MAX_LUN; i++){ | |
1609 | if(h->gendisk[i] == disk){ | |
1610 | h->gendisk[i] = NULL; | |
1611 | break; | |
1612 | } | |
1613 | } | |
1614 | put_disk(disk); | |
1615 | } | |
ddd47442 | 1616 | } |
799202cb MM |
1617 | } else { |
1618 | set_capacity(disk, 0); | |
ddd47442 MM |
1619 | } |
1620 | ||
1621 | --h->num_luns; | |
1622 | /* zero out the disk size info */ | |
1623 | drv->nr_blocks = 0; | |
1624 | drv->block_size = 0; | |
1625 | drv->heads = 0; | |
1626 | drv->sectors = 0; | |
1627 | drv->cylinders = 0; | |
1628 | drv->raid_level = -1; /* This can be used as a flag variable to | |
1629 | * indicate that this element of the drive | |
1630 | * array is free. | |
7c832835 BH |
1631 | */ |
1632 | ||
1633 | if (clear_all) { | |
1634 | /* check to see if it was the last disk */ | |
1635 | if (drv == h->drv + h->highest_lun) { | |
1636 | /* if so, find the new hightest lun */ | |
1637 | int i, newhighest = -1; | |
1638 | for (i = 0; i < h->highest_lun; i++) { | |
1639 | /* if the disk has size > 0, it is available */ | |
ddd47442 | 1640 | if (h->drv[i].heads) |
7c832835 BH |
1641 | newhighest = i; |
1642 | } | |
1643 | h->highest_lun = newhighest; | |
1da177e4 | 1644 | } |
ddd47442 | 1645 | |
7c832835 | 1646 | drv->LunID = 0; |
ddd47442 | 1647 | } |
e2019b58 | 1648 | return 0; |
1da177e4 | 1649 | } |
ddd47442 | 1650 | |
7c832835 BH |
1651 | static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, |
1652 | 1: address logical volume log_unit, | |
1653 | 2: periph device address is scsi3addr */ | |
1654 | unsigned int log_unit, __u8 page_code, | |
1655 | unsigned char *scsi3addr, int cmd_type) | |
1da177e4 | 1656 | { |
7c832835 | 1657 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
1658 | u64bit buff_dma_handle; |
1659 | int status = IO_OK; | |
1660 | ||
1661 | c->cmd_type = CMD_IOCTL_PEND; | |
1662 | c->Header.ReplyQueue = 0; | |
7c832835 | 1663 | if (buff != NULL) { |
1da177e4 | 1664 | c->Header.SGList = 1; |
7c832835 | 1665 | c->Header.SGTotal = 1; |
1da177e4 LT |
1666 | } else { |
1667 | c->Header.SGList = 0; | |
7c832835 | 1668 | c->Header.SGTotal = 0; |
1da177e4 LT |
1669 | } |
1670 | c->Header.Tag.lower = c->busaddr; | |
1671 | ||
1672 | c->Request.Type.Type = cmd_type; | |
1673 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
1674 | switch (cmd) { |
1675 | case CISS_INQUIRY: | |
1da177e4 | 1676 | /* If the logical unit number is 0 then, this is going |
7c832835 BH |
1677 | to controller so It's a physical command |
1678 | mode = 0 target = 0. So we have nothing to write. | |
1679 | otherwise, if use_unit_num == 1, | |
1680 | mode = 1(volume set addressing) target = LUNID | |
1681 | otherwise, if use_unit_num == 2, | |
1682 | mode = 0(periph dev addr) target = scsi3addr */ | |
1da177e4 | 1683 | if (use_unit_num == 1) { |
7c832835 BH |
1684 | c->Header.LUN.LogDev.VolId = |
1685 | h->drv[log_unit].LunID; | |
1686 | c->Header.LUN.LogDev.Mode = 1; | |
1da177e4 | 1687 | } else if (use_unit_num == 2) { |
7c832835 BH |
1688 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, |
1689 | 8); | |
1da177e4 LT |
1690 | c->Header.LUN.LogDev.Mode = 0; |
1691 | } | |
1692 | /* are we trying to read a vital product page */ | |
7c832835 | 1693 | if (page_code != 0) { |
1da177e4 LT |
1694 | c->Request.CDB[1] = 0x01; |
1695 | c->Request.CDB[2] = page_code; | |
1696 | } | |
1697 | c->Request.CDBLen = 6; | |
7c832835 | 1698 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
1699 | c->Request.Type.Direction = XFER_READ; |
1700 | c->Request.Timeout = 0; | |
7c832835 BH |
1701 | c->Request.CDB[0] = CISS_INQUIRY; |
1702 | c->Request.CDB[4] = size & 0xFF; | |
1703 | break; | |
1da177e4 LT |
1704 | case CISS_REPORT_LOG: |
1705 | case CISS_REPORT_PHYS: | |
7c832835 | 1706 | /* Talking to controller so It's a physical command |
1da177e4 | 1707 | mode = 00 target = 0. Nothing to write. |
7c832835 | 1708 | */ |
1da177e4 LT |
1709 | c->Request.CDBLen = 12; |
1710 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1711 | c->Request.Type.Direction = XFER_READ; | |
1712 | c->Request.Timeout = 0; | |
1713 | c->Request.CDB[0] = cmd; | |
7c832835 | 1714 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
1da177e4 LT |
1715 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
1716 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
1717 | c->Request.CDB[9] = size & 0xFF; | |
1718 | break; | |
1719 | ||
1720 | case CCISS_READ_CAPACITY: | |
1721 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1722 | c->Header.LUN.LogDev.Mode = 1; | |
1723 | c->Request.CDBLen = 10; | |
1724 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1725 | c->Request.Type.Direction = XFER_READ; | |
1726 | c->Request.Timeout = 0; | |
1727 | c->Request.CDB[0] = cmd; | |
7c832835 | 1728 | break; |
00988a35 MMOD |
1729 | case CCISS_READ_CAPACITY_16: |
1730 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1731 | c->Header.LUN.LogDev.Mode = 1; | |
1732 | c->Request.CDBLen = 16; | |
1733 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1734 | c->Request.Type.Direction = XFER_READ; | |
1735 | c->Request.Timeout = 0; | |
1736 | c->Request.CDB[0] = cmd; | |
1737 | c->Request.CDB[1] = 0x10; | |
1738 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
1739 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
1740 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
1741 | c->Request.CDB[13] = size & 0xFF; | |
1742 | c->Request.Timeout = 0; | |
1743 | c->Request.CDB[0] = cmd; | |
1744 | break; | |
1da177e4 LT |
1745 | case CCISS_CACHE_FLUSH: |
1746 | c->Request.CDBLen = 12; | |
1747 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1748 | c->Request.Type.Direction = XFER_WRITE; | |
1749 | c->Request.Timeout = 0; | |
1750 | c->Request.CDB[0] = BMIC_WRITE; | |
1751 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 1752 | break; |
1da177e4 LT |
1753 | default: |
1754 | printk(KERN_WARNING | |
7c832835 | 1755 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 1756 | return IO_ERROR; |
1da177e4 LT |
1757 | } |
1758 | } else if (cmd_type == TYPE_MSG) { | |
1759 | switch (cmd) { | |
7c832835 | 1760 | case 0: /* ABORT message */ |
3da8b713 | 1761 | c->Request.CDBLen = 12; |
1762 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1763 | c->Request.Type.Direction = XFER_WRITE; | |
1764 | c->Request.Timeout = 0; | |
7c832835 BH |
1765 | c->Request.CDB[0] = cmd; /* abort */ |
1766 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 1767 | /* buff contains the tag of the command to abort */ |
1768 | memcpy(&c->Request.CDB[4], buff, 8); | |
1769 | break; | |
7c832835 | 1770 | case 1: /* RESET message */ |
3da8b713 | 1771 | c->Request.CDBLen = 12; |
1772 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1773 | c->Request.Type.Direction = XFER_WRITE; | |
1774 | c->Request.Timeout = 0; | |
1775 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 BH |
1776 | c->Request.CDB[0] = cmd; /* reset */ |
1777 | c->Request.CDB[1] = 0x04; /* reset a LUN */ | |
00988a35 | 1778 | break; |
1da177e4 LT |
1779 | case 3: /* No-Op message */ |
1780 | c->Request.CDBLen = 1; | |
1781 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1782 | c->Request.Type.Direction = XFER_WRITE; | |
1783 | c->Request.Timeout = 0; | |
1784 | c->Request.CDB[0] = cmd; | |
1785 | break; | |
1786 | default: | |
1787 | printk(KERN_WARNING | |
7c832835 | 1788 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
1789 | return IO_ERROR; |
1790 | } | |
1791 | } else { | |
1792 | printk(KERN_WARNING | |
7c832835 | 1793 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
1794 | return IO_ERROR; |
1795 | } | |
1796 | /* Fill in the scatter gather information */ | |
1797 | if (size > 0) { | |
1798 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
1799 | buff, size, |
1800 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
1801 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
1802 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
1803 | c->SG[0].Len = size; | |
7c832835 | 1804 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
1805 | } |
1806 | return status; | |
1807 | } | |
7c832835 BH |
1808 | |
1809 | static int sendcmd_withirq(__u8 cmd, | |
1810 | int ctlr, | |
1811 | void *buff, | |
1812 | size_t size, | |
1813 | unsigned int use_unit_num, | |
1814 | unsigned int log_unit, __u8 page_code, int cmd_type) | |
1da177e4 LT |
1815 | { |
1816 | ctlr_info_t *h = hba[ctlr]; | |
1817 | CommandList_struct *c; | |
7c832835 | 1818 | u64bit buff_dma_handle; |
1da177e4 LT |
1819 | unsigned long flags; |
1820 | int return_status; | |
6e9a4738 | 1821 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1822 | |
1823 | if ((c = cmd_alloc(h, 0)) == NULL) | |
1da177e4 LT |
1824 | return -ENOMEM; |
1825 | return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 1826 | log_unit, page_code, NULL, cmd_type); |
1da177e4 LT |
1827 | if (return_status != IO_OK) { |
1828 | cmd_free(h, c, 0); | |
1829 | return return_status; | |
1830 | } | |
7c832835 | 1831 | resend_cmd2: |
1da177e4 | 1832 | c->waiting = &wait; |
7c832835 | 1833 | |
1da177e4 LT |
1834 | /* Put the request on the tail of the queue and send it */ |
1835 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1836 | addQ(&h->reqQ, c); | |
1837 | h->Qdepth++; | |
1838 | start_io(h); | |
1839 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 1840 | |
1da177e4 LT |
1841 | wait_for_completion(&wait); |
1842 | ||
7c832835 BH |
1843 | if (c->err_info->CommandStatus != 0) { /* an error has occurred */ |
1844 | switch (c->err_info->CommandStatus) { | |
1845 | case CMD_TARGET_STATUS: | |
1846 | printk(KERN_WARNING "cciss: cmd %p has " | |
1847 | " completed with errors\n", c); | |
1848 | if (c->err_info->ScsiStatus) { | |
1849 | printk(KERN_WARNING "cciss: cmd %p " | |
1850 | "has SCSI Status = %x\n", | |
1851 | c, c->err_info->ScsiStatus); | |
1852 | } | |
1da177e4 LT |
1853 | |
1854 | break; | |
7c832835 BH |
1855 | case CMD_DATA_UNDERRUN: |
1856 | case CMD_DATA_OVERRUN: | |
1da177e4 LT |
1857 | /* expected for inquire and report lun commands */ |
1858 | break; | |
7c832835 BH |
1859 | case CMD_INVALID: |
1860 | printk(KERN_WARNING "cciss: Cmd %p is " | |
1861 | "reported invalid\n", c); | |
1862 | return_status = IO_ERROR; | |
1da177e4 | 1863 | break; |
7c832835 BH |
1864 | case CMD_PROTOCOL_ERR: |
1865 | printk(KERN_WARNING "cciss: cmd %p has " | |
1866 | "protocol error \n", c); | |
1867 | return_status = IO_ERROR; | |
1da177e4 | 1868 | break; |
7c832835 BH |
1869 | case CMD_HARDWARE_ERR: |
1870 | printk(KERN_WARNING "cciss: cmd %p had " | |
1871 | " hardware error\n", c); | |
1872 | return_status = IO_ERROR; | |
1da177e4 | 1873 | break; |
7c832835 BH |
1874 | case CMD_CONNECTION_LOST: |
1875 | printk(KERN_WARNING "cciss: cmd %p had " | |
1876 | "connection lost\n", c); | |
1877 | return_status = IO_ERROR; | |
1da177e4 | 1878 | break; |
7c832835 BH |
1879 | case CMD_ABORTED: |
1880 | printk(KERN_WARNING "cciss: cmd %p was " | |
1881 | "aborted\n", c); | |
1882 | return_status = IO_ERROR; | |
1da177e4 | 1883 | break; |
7c832835 BH |
1884 | case CMD_ABORT_FAILED: |
1885 | printk(KERN_WARNING "cciss: cmd %p reports " | |
1886 | "abort failed\n", c); | |
1887 | return_status = IO_ERROR; | |
1888 | break; | |
1889 | case CMD_UNSOLICITED_ABORT: | |
1890 | printk(KERN_WARNING | |
1891 | "cciss%d: unsolicited abort %p\n", ctlr, c); | |
1892 | if (c->retry_count < MAX_CMD_RETRIES) { | |
1893 | printk(KERN_WARNING | |
1894 | "cciss%d: retrying %p\n", ctlr, c); | |
1895 | c->retry_count++; | |
1896 | /* erase the old error information */ | |
1897 | memset(c->err_info, 0, | |
1898 | sizeof(ErrorInfo_struct)); | |
1899 | return_status = IO_OK; | |
1900 | INIT_COMPLETION(wait); | |
1901 | goto resend_cmd2; | |
1902 | } | |
1903 | return_status = IO_ERROR; | |
1904 | break; | |
1905 | default: | |
1906 | printk(KERN_WARNING "cciss: cmd %p returned " | |
1907 | "unknown status %x\n", c, | |
1908 | c->err_info->CommandStatus); | |
1909 | return_status = IO_ERROR; | |
1da177e4 | 1910 | } |
7c832835 | 1911 | } |
1da177e4 | 1912 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
1913 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
1914 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
1915 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
1916 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
1da177e4 | 1917 | cmd_free(h, c, 0); |
7c832835 | 1918 | return return_status; |
1da177e4 | 1919 | } |
7c832835 | 1920 | |
1da177e4 | 1921 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
00988a35 | 1922 | int withirq, sector_t total_size, |
7c832835 BH |
1923 | unsigned int block_size, |
1924 | InquiryData_struct *inq_buff, | |
1925 | drive_info_struct *drv) | |
1da177e4 LT |
1926 | { |
1927 | int return_code; | |
00988a35 | 1928 | unsigned long t; |
00988a35 | 1929 | |
1da177e4 LT |
1930 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
1931 | if (withirq) | |
1932 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, | |
7c832835 BH |
1933 | inq_buff, sizeof(*inq_buff), 1, |
1934 | logvol, 0xC1, TYPE_CMD); | |
1da177e4 LT |
1935 | else |
1936 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, | |
7c832835 BH |
1937 | sizeof(*inq_buff), 1, logvol, 0xC1, NULL, |
1938 | TYPE_CMD); | |
1da177e4 | 1939 | if (return_code == IO_OK) { |
7c832835 | 1940 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 1941 | printk(KERN_WARNING |
7c832835 BH |
1942 | "cciss: reading geometry failed, volume " |
1943 | "does not support reading geometry\n"); | |
1da177e4 | 1944 | drv->heads = 255; |
7c832835 | 1945 | drv->sectors = 32; // Sectors per track |
7f42d3b8 | 1946 | drv->cylinders = total_size + 1; |
89f97ad1 | 1947 | drv->raid_level = RAID_UNKNOWN; |
1da177e4 | 1948 | } else { |
1da177e4 LT |
1949 | drv->heads = inq_buff->data_byte[6]; |
1950 | drv->sectors = inq_buff->data_byte[7]; | |
1951 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
1952 | drv->cylinders += inq_buff->data_byte[5]; | |
1953 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
1954 | } |
1955 | drv->block_size = block_size; | |
97c06978 | 1956 | drv->nr_blocks = total_size + 1; |
3f7705ea MW |
1957 | t = drv->heads * drv->sectors; |
1958 | if (t > 1) { | |
97c06978 MMOD |
1959 | sector_t real_size = total_size + 1; |
1960 | unsigned long rem = sector_div(real_size, t); | |
3f7705ea | 1961 | if (rem) |
97c06978 MMOD |
1962 | real_size++; |
1963 | drv->cylinders = real_size; | |
1da177e4 | 1964 | } |
7c832835 | 1965 | } else { /* Get geometry failed */ |
1da177e4 LT |
1966 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
1967 | } | |
cc088d10 | 1968 | printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n", |
7c832835 | 1969 | drv->heads, drv->sectors, drv->cylinders); |
1da177e4 | 1970 | } |
7c832835 | 1971 | |
1da177e4 | 1972 | static void |
00988a35 | 1973 | cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size, |
7c832835 | 1974 | unsigned int *block_size) |
1da177e4 | 1975 | { |
00988a35 | 1976 | ReadCapdata_struct *buf; |
1da177e4 | 1977 | int return_code; |
00988a35 MMOD |
1978 | buf = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); |
1979 | if (buf == NULL) { | |
1980 | printk(KERN_WARNING "cciss: out of memory\n"); | |
1981 | return; | |
1982 | } | |
1983 | memset(buf, 0, sizeof(ReadCapdata_struct)); | |
1da177e4 LT |
1984 | if (withirq) |
1985 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
1986 | ctlr, buf, sizeof(ReadCapdata_struct), |
1987 | 1, logvol, 0, TYPE_CMD); | |
1da177e4 LT |
1988 | else |
1989 | return_code = sendcmd(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
1990 | ctlr, buf, sizeof(ReadCapdata_struct), |
1991 | 1, logvol, 0, NULL, TYPE_CMD); | |
1da177e4 | 1992 | if (return_code == IO_OK) { |
4c1f2b31 AV |
1993 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
1994 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
7c832835 | 1995 | } else { /* read capacity command failed */ |
1da177e4 LT |
1996 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
1997 | *total_size = 0; | |
1998 | *block_size = BLOCK_SIZE; | |
1999 | } | |
97c06978 | 2000 | if (*total_size != 0) |
7b92aadf | 2001 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2002 | (unsigned long long)*total_size+1, *block_size); |
00988a35 MMOD |
2003 | kfree(buf); |
2004 | return; | |
2005 | } | |
2006 | ||
2007 | static void | |
2008 | cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) | |
2009 | { | |
2010 | ReadCapdata_struct_16 *buf; | |
2011 | int return_code; | |
2012 | buf = kmalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2013 | if (buf == NULL) { | |
2014 | printk(KERN_WARNING "cciss: out of memory\n"); | |
2015 | return; | |
2016 | } | |
2017 | memset(buf, 0, sizeof(ReadCapdata_struct_16)); | |
2018 | if (withirq) { | |
2019 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, | |
2020 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2021 | 1, logvol, 0, TYPE_CMD); | |
2022 | } | |
2023 | else { | |
2024 | return_code = sendcmd(CCISS_READ_CAPACITY_16, | |
2025 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2026 | 1, logvol, 0, NULL, TYPE_CMD); | |
2027 | } | |
2028 | if (return_code == IO_OK) { | |
4c1f2b31 AV |
2029 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
2030 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
00988a35 MMOD |
2031 | } else { /* read capacity command failed */ |
2032 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
2033 | *total_size = 0; | |
2034 | *block_size = BLOCK_SIZE; | |
2035 | } | |
7b92aadf | 2036 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2037 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2038 | kfree(buf); |
1da177e4 LT |
2039 | return; |
2040 | } | |
2041 | ||
1da177e4 LT |
2042 | static int cciss_revalidate(struct gendisk *disk) |
2043 | { | |
2044 | ctlr_info_t *h = get_host(disk); | |
2045 | drive_info_struct *drv = get_drv(disk); | |
2046 | int logvol; | |
7c832835 | 2047 | int FOUND = 0; |
1da177e4 | 2048 | unsigned int block_size; |
00988a35 | 2049 | sector_t total_size; |
1da177e4 LT |
2050 | InquiryData_struct *inq_buff = NULL; |
2051 | ||
7c832835 BH |
2052 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
2053 | if (h->drv[logvol].LunID == drv->LunID) { | |
2054 | FOUND = 1; | |
1da177e4 LT |
2055 | break; |
2056 | } | |
2057 | } | |
2058 | ||
7c832835 BH |
2059 | if (!FOUND) |
2060 | return 1; | |
1da177e4 | 2061 | |
7c832835 BH |
2062 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2063 | if (inq_buff == NULL) { | |
2064 | printk(KERN_WARNING "cciss: out of memory\n"); | |
7c832835 BH |
2065 | return 1; |
2066 | } | |
00988a35 MMOD |
2067 | if (h->cciss_read == CCISS_READ_10) { |
2068 | cciss_read_capacity(h->ctlr, logvol, 1, | |
2069 | &total_size, &block_size); | |
2070 | } else { | |
2071 | cciss_read_capacity_16(h->ctlr, logvol, 1, | |
2072 | &total_size, &block_size); | |
2073 | } | |
7c832835 BH |
2074 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, |
2075 | inq_buff, drv); | |
1da177e4 | 2076 | |
ad2b9312 | 2077 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
1da177e4 LT |
2078 | set_capacity(disk, drv->nr_blocks); |
2079 | ||
1da177e4 LT |
2080 | kfree(inq_buff); |
2081 | return 0; | |
2082 | } | |
2083 | ||
2084 | /* | |
2085 | * Wait polling for a command to complete. | |
2086 | * The memory mapped FIFO is polled for the completion. | |
2087 | * Used only at init time, interrupts from the HBA are disabled. | |
2088 | */ | |
2089 | static unsigned long pollcomplete(int ctlr) | |
2090 | { | |
2091 | unsigned long done; | |
2092 | int i; | |
2093 | ||
2094 | /* Wait (up to 20 seconds) for a command to complete */ | |
2095 | ||
2096 | for (i = 20 * HZ; i > 0; i--) { | |
2097 | done = hba[ctlr]->access.command_completed(hba[ctlr]); | |
86e84862 NA |
2098 | if (done == FIFO_EMPTY) |
2099 | schedule_timeout_uninterruptible(1); | |
2100 | else | |
e2019b58 | 2101 | return done; |
1da177e4 LT |
2102 | } |
2103 | /* Invalid address to tell caller we ran out of time */ | |
2104 | return 1; | |
2105 | } | |
3da8b713 | 2106 | |
2107 | static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) | |
2108 | { | |
2109 | /* We get in here if sendcmd() is polling for completions | |
7c832835 BH |
2110 | and gets some command back that it wasn't expecting -- |
2111 | something other than that which it just sent down. | |
2112 | Ordinarily, that shouldn't happen, but it can happen when | |
3da8b713 | 2113 | the scsi tape stuff gets into error handling mode, and |
7c832835 | 2114 | starts using sendcmd() to try to abort commands and |
3da8b713 | 2115 | reset tape drives. In that case, sendcmd may pick up |
2116 | completions of commands that were sent to logical drives | |
7c832835 | 2117 | through the block i/o system, or cciss ioctls completing, etc. |
3da8b713 | 2118 | In that case, we need to save those completions for later |
2119 | processing by the interrupt handler. | |
7c832835 | 2120 | */ |
3da8b713 | 2121 | |
2122 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2123 | struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects; |
3da8b713 | 2124 | |
2125 | /* If it's not the scsi tape stuff doing error handling, (abort */ | |
2126 | /* or reset) then we don't expect anything weird. */ | |
2127 | if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) { | |
2128 | #endif | |
7c832835 BH |
2129 | printk(KERN_WARNING "cciss cciss%d: SendCmd " |
2130 | "Invalid command list address returned! (%lx)\n", | |
2131 | ctlr, complete); | |
3da8b713 | 2132 | /* not much we can do. */ |
2133 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2134 | return 1; | |
2135 | } | |
2136 | ||
2137 | /* We've sent down an abort or reset, but something else | |
2138 | has completed */ | |
f880632f | 2139 | if (srl->ncompletions >= (hba[ctlr]->nr_cmds + 2)) { |
3da8b713 | 2140 | /* Uh oh. No room to save it for later... */ |
2141 | printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, " | |
7c832835 | 2142 | "reject list overflow, command lost!\n", ctlr); |
3da8b713 | 2143 | return 1; |
2144 | } | |
2145 | /* Save it for later */ | |
2146 | srl->complete[srl->ncompletions] = complete; | |
2147 | srl->ncompletions++; | |
2148 | #endif | |
2149 | return 0; | |
2150 | } | |
2151 | ||
1da177e4 | 2152 | /* |
7c832835 BH |
2153 | * Send a command to the controller, and wait for it to complete. |
2154 | * Only used at init time. | |
1da177e4 | 2155 | */ |
7c832835 BH |
2156 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, |
2157 | 1: address logical volume log_unit, | |
2158 | 2: periph device address is scsi3addr */ | |
2159 | unsigned int log_unit, | |
2160 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) | |
1da177e4 LT |
2161 | { |
2162 | CommandList_struct *c; | |
2163 | int i; | |
2164 | unsigned long complete; | |
7c832835 | 2165 | ctlr_info_t *info_p = hba[ctlr]; |
1da177e4 | 2166 | u64bit buff_dma_handle; |
3da8b713 | 2167 | int status, done = 0; |
1da177e4 LT |
2168 | |
2169 | if ((c = cmd_alloc(info_p, 1)) == NULL) { | |
2170 | printk(KERN_WARNING "cciss: unable to get memory"); | |
e2019b58 | 2171 | return IO_ERROR; |
1da177e4 LT |
2172 | } |
2173 | status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 2174 | log_unit, page_code, scsi3addr, cmd_type); |
1da177e4 LT |
2175 | if (status != IO_OK) { |
2176 | cmd_free(info_p, c, 1); | |
2177 | return status; | |
2178 | } | |
7c832835 | 2179 | resend_cmd1: |
1da177e4 | 2180 | /* |
7c832835 BH |
2181 | * Disable interrupt |
2182 | */ | |
1da177e4 LT |
2183 | #ifdef CCISS_DEBUG |
2184 | printk(KERN_DEBUG "cciss: turning intr off\n"); | |
7c832835 BH |
2185 | #endif /* CCISS_DEBUG */ |
2186 | info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF); | |
2187 | ||
1da177e4 | 2188 | /* Make sure there is room in the command FIFO */ |
7c832835 | 2189 | /* Actually it should be completely empty at this time */ |
3da8b713 | 2190 | /* unless we are in here doing error handling for the scsi */ |
2191 | /* tape side of the driver. */ | |
7c832835 | 2192 | for (i = 200000; i > 0; i--) { |
1da177e4 | 2193 | /* if fifo isn't full go */ |
7c832835 BH |
2194 | if (!(info_p->access.fifo_full(info_p))) { |
2195 | ||
2196 | break; | |
2197 | } | |
2198 | udelay(10); | |
2199 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," | |
2200 | " waiting!\n", ctlr); | |
2201 | } | |
2202 | /* | |
2203 | * Send the cmd | |
2204 | */ | |
2205 | info_p->access.submit_command(info_p, c); | |
3da8b713 | 2206 | done = 0; |
2207 | do { | |
2208 | complete = pollcomplete(ctlr); | |
1da177e4 LT |
2209 | |
2210 | #ifdef CCISS_DEBUG | |
3da8b713 | 2211 | printk(KERN_DEBUG "cciss: command completed\n"); |
7c832835 | 2212 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2213 | |
3da8b713 | 2214 | if (complete == 1) { |
7c832835 BH |
2215 | printk(KERN_WARNING |
2216 | "cciss cciss%d: SendCmd Timeout out, " | |
2217 | "No command list address returned!\n", ctlr); | |
3da8b713 | 2218 | status = IO_ERROR; |
2219 | done = 1; | |
2220 | break; | |
2221 | } | |
2222 | ||
2223 | /* This will need to change for direct lookup completions */ | |
7c832835 BH |
2224 | if ((complete & CISS_ERROR_BIT) |
2225 | && (complete & ~CISS_ERROR_BIT) == c->busaddr) { | |
2226 | /* if data overrun or underun on Report command | |
2227 | ignore it | |
2228 | */ | |
1da177e4 LT |
2229 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || |
2230 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || | |
2231 | (c->Request.CDB[0] == CISS_INQUIRY)) && | |
7c832835 BH |
2232 | ((c->err_info->CommandStatus == |
2233 | CMD_DATA_OVERRUN) || | |
2234 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN) | |
2235 | )) { | |
1da177e4 LT |
2236 | complete = c->busaddr; |
2237 | } else { | |
2238 | if (c->err_info->CommandStatus == | |
7c832835 | 2239 | CMD_UNSOLICITED_ABORT) { |
1da177e4 | 2240 | printk(KERN_WARNING "cciss%d: " |
7c832835 BH |
2241 | "unsolicited abort %p\n", |
2242 | ctlr, c); | |
1da177e4 LT |
2243 | if (c->retry_count < MAX_CMD_RETRIES) { |
2244 | printk(KERN_WARNING | |
7c832835 BH |
2245 | "cciss%d: retrying %p\n", |
2246 | ctlr, c); | |
1da177e4 LT |
2247 | c->retry_count++; |
2248 | /* erase the old error */ | |
2249 | /* information */ | |
2250 | memset(c->err_info, 0, | |
7c832835 BH |
2251 | sizeof |
2252 | (ErrorInfo_struct)); | |
1da177e4 LT |
2253 | goto resend_cmd1; |
2254 | } else { | |
2255 | printk(KERN_WARNING | |
7c832835 BH |
2256 | "cciss%d: retried %p too " |
2257 | "many times\n", ctlr, c); | |
1da177e4 LT |
2258 | status = IO_ERROR; |
2259 | goto cleanup1; | |
2260 | } | |
7c832835 BH |
2261 | } else if (c->err_info->CommandStatus == |
2262 | CMD_UNABORTABLE) { | |
2263 | printk(KERN_WARNING | |
2264 | "cciss%d: command could not be aborted.\n", | |
2265 | ctlr); | |
3da8b713 | 2266 | status = IO_ERROR; |
2267 | goto cleanup1; | |
1da177e4 LT |
2268 | } |
2269 | printk(KERN_WARNING "ciss ciss%d: sendcmd" | |
7c832835 BH |
2270 | " Error %x \n", ctlr, |
2271 | c->err_info->CommandStatus); | |
1da177e4 | 2272 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
7c832835 BH |
2273 | " offensive info\n" |
2274 | " size %x\n num %x value %x\n", | |
2275 | ctlr, | |
2276 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2277 | offense_size, | |
2278 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2279 | offense_num, | |
2280 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2281 | offense_value); | |
1da177e4 LT |
2282 | status = IO_ERROR; |
2283 | goto cleanup1; | |
2284 | } | |
2285 | } | |
3da8b713 | 2286 | /* This will need changing for direct lookup completions */ |
7c832835 | 2287 | if (complete != c->busaddr) { |
3da8b713 | 2288 | if (add_sendcmd_reject(cmd, ctlr, complete) != 0) { |
7c832835 | 2289 | BUG(); /* we are pretty much hosed if we get here. */ |
3da8b713 | 2290 | } |
2291 | continue; | |
7c832835 | 2292 | } else |
3da8b713 | 2293 | done = 1; |
7c832835 BH |
2294 | } while (!done); |
2295 | ||
2296 | cleanup1: | |
1da177e4 | 2297 | /* unlock the data buffer from DMA */ |
bb2a37bf MM |
2298 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2299 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
1da177e4 | 2300 | pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val, |
7c832835 | 2301 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
3da8b713 | 2302 | #ifdef CONFIG_CISS_SCSI_TAPE |
2303 | /* if we saved some commands for later, process them now. */ | |
2304 | if (info_p->scsi_rejects.ncompletions > 0) | |
7d12e780 | 2305 | do_cciss_intr(0, info_p); |
3da8b713 | 2306 | #endif |
1da177e4 | 2307 | cmd_free(info_p, c, 1); |
e2019b58 | 2308 | return status; |
7c832835 BH |
2309 | } |
2310 | ||
1da177e4 LT |
2311 | /* |
2312 | * Map (physical) PCI mem into (virtual) kernel space | |
2313 | */ | |
2314 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2315 | { | |
7c832835 BH |
2316 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2317 | ulong page_offs = ((ulong) base) - page_base; | |
2318 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2319 | |
7c832835 | 2320 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2321 | } |
2322 | ||
7c832835 BH |
2323 | /* |
2324 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2325 | * the Q to wait for completion. | |
2326 | */ | |
2327 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
2328 | { |
2329 | CommandList_struct *c; | |
7c832835 BH |
2330 | |
2331 | while ((c = h->reqQ) != NULL) { | |
1da177e4 LT |
2332 | /* can't do anything if fifo is full */ |
2333 | if ((h->access.fifo_full(h))) { | |
2334 | printk(KERN_WARNING "cciss: fifo full\n"); | |
2335 | break; | |
2336 | } | |
2337 | ||
7c832835 | 2338 | /* Get the first entry from the Request Q */ |
1da177e4 LT |
2339 | removeQ(&(h->reqQ), c); |
2340 | h->Qdepth--; | |
7c832835 BH |
2341 | |
2342 | /* Tell the controller execute command */ | |
1da177e4 | 2343 | h->access.submit_command(h, c); |
7c832835 BH |
2344 | |
2345 | /* Put job onto the completed Q */ | |
2346 | addQ(&(h->cmpQ), c); | |
1da177e4 LT |
2347 | } |
2348 | } | |
7c832835 | 2349 | |
1da177e4 LT |
2350 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
2351 | /* Zeros out the error record and then resends the command back */ | |
2352 | /* to the controller */ | |
7c832835 | 2353 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
2354 | { |
2355 | /* erase the old error information */ | |
2356 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2357 | ||
2358 | /* add it to software queue and then send it to the controller */ | |
7c832835 | 2359 | addQ(&(h->reqQ), c); |
1da177e4 | 2360 | h->Qdepth++; |
7c832835 | 2361 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
2362 | h->maxQsinceinit = h->Qdepth; |
2363 | ||
2364 | start_io(h); | |
2365 | } | |
a9925a06 | 2366 | |
03bbfee5 MMOD |
2367 | static inline int evaluate_target_status(CommandList_struct *cmd) |
2368 | { | |
2369 | unsigned char sense_key; | |
198b7660 | 2370 | int error_count = 1; |
03bbfee5 MMOD |
2371 | |
2372 | if (cmd->err_info->ScsiStatus != 0x02) { /* not check condition? */ | |
2373 | if (!blk_pc_request(cmd->rq)) | |
2374 | printk(KERN_WARNING "cciss: cmd %p " | |
2375 | "has SCSI Status 0x%x\n", | |
2376 | cmd, cmd->err_info->ScsiStatus); | |
198b7660 | 2377 | return error_count; |
03bbfee5 MMOD |
2378 | } |
2379 | ||
2380 | /* check the sense key */ | |
2381 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
2382 | /* no status or recovered error */ | |
2383 | if ((sense_key == 0x0) || (sense_key == 0x1)) | |
198b7660 | 2384 | error_count = 0; |
03bbfee5 MMOD |
2385 | |
2386 | if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */ | |
198b7660 | 2387 | if (error_count != 0) |
03bbfee5 MMOD |
2388 | printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" |
2389 | " sense key = 0x%x\n", cmd, sense_key); | |
198b7660 | 2390 | return error_count; |
03bbfee5 MMOD |
2391 | } |
2392 | ||
2393 | /* SG_IO or similar, copy sense data back */ | |
2394 | if (cmd->rq->sense) { | |
2395 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) | |
2396 | cmd->rq->sense_len = cmd->err_info->SenseLen; | |
2397 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, | |
2398 | cmd->rq->sense_len); | |
2399 | } else | |
2400 | cmd->rq->sense_len = 0; | |
2401 | ||
198b7660 | 2402 | return error_count; |
03bbfee5 MMOD |
2403 | } |
2404 | ||
7c832835 | 2405 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
2406 | * buffers for the completed job. Note that this function does not need |
2407 | * to hold the hba/queue lock. | |
7c832835 BH |
2408 | */ |
2409 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
2410 | int timeout) | |
1da177e4 | 2411 | { |
1da177e4 | 2412 | int retry_cmd = 0; |
198b7660 MMOD |
2413 | struct request *rq = cmd->rq; |
2414 | ||
2415 | rq->errors = 0; | |
7c832835 | 2416 | |
1da177e4 | 2417 | if (timeout) |
198b7660 | 2418 | rq->errors = 1; |
1da177e4 | 2419 | |
d38ae168 MMOD |
2420 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
2421 | goto after_error_processing; | |
7c832835 | 2422 | |
d38ae168 | 2423 | switch (cmd->err_info->CommandStatus) { |
d38ae168 | 2424 | case CMD_TARGET_STATUS: |
198b7660 | 2425 | rq->errors = evaluate_target_status(cmd); |
d38ae168 MMOD |
2426 | break; |
2427 | case CMD_DATA_UNDERRUN: | |
03bbfee5 MMOD |
2428 | if (blk_fs_request(cmd->rq)) { |
2429 | printk(KERN_WARNING "cciss: cmd %p has" | |
2430 | " completed with data underrun " | |
2431 | "reported\n", cmd); | |
2432 | cmd->rq->data_len = cmd->err_info->ResidualCnt; | |
2433 | } | |
d38ae168 MMOD |
2434 | break; |
2435 | case CMD_DATA_OVERRUN: | |
03bbfee5 MMOD |
2436 | if (blk_fs_request(cmd->rq)) |
2437 | printk(KERN_WARNING "cciss: cmd %p has" | |
2438 | " completed with data overrun " | |
2439 | "reported\n", cmd); | |
d38ae168 MMOD |
2440 | break; |
2441 | case CMD_INVALID: | |
2442 | printk(KERN_WARNING "cciss: cmd %p is " | |
2443 | "reported invalid\n", cmd); | |
198b7660 | 2444 | rq->errors = 1; |
d38ae168 MMOD |
2445 | break; |
2446 | case CMD_PROTOCOL_ERR: | |
2447 | printk(KERN_WARNING "cciss: cmd %p has " | |
2448 | "protocol error \n", cmd); | |
198b7660 | 2449 | rq->errors = 1; |
d38ae168 MMOD |
2450 | break; |
2451 | case CMD_HARDWARE_ERR: | |
2452 | printk(KERN_WARNING "cciss: cmd %p had " | |
2453 | " hardware error\n", cmd); | |
198b7660 | 2454 | rq->errors = 1; |
d38ae168 MMOD |
2455 | break; |
2456 | case CMD_CONNECTION_LOST: | |
2457 | printk(KERN_WARNING "cciss: cmd %p had " | |
2458 | "connection lost\n", cmd); | |
198b7660 | 2459 | rq->errors = 1; |
d38ae168 MMOD |
2460 | break; |
2461 | case CMD_ABORTED: | |
2462 | printk(KERN_WARNING "cciss: cmd %p was " | |
2463 | "aborted\n", cmd); | |
198b7660 | 2464 | rq->errors = 1; |
d38ae168 MMOD |
2465 | break; |
2466 | case CMD_ABORT_FAILED: | |
2467 | printk(KERN_WARNING "cciss: cmd %p reports " | |
2468 | "abort failed\n", cmd); | |
198b7660 | 2469 | rq->errors = 1; |
d38ae168 MMOD |
2470 | break; |
2471 | case CMD_UNSOLICITED_ABORT: | |
2472 | printk(KERN_WARNING "cciss%d: unsolicited " | |
2473 | "abort %p\n", h->ctlr, cmd); | |
2474 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
2475 | retry_cmd = 1; | |
2476 | printk(KERN_WARNING | |
2477 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
2478 | cmd->retry_count++; | |
2479 | } else | |
2480 | printk(KERN_WARNING | |
2481 | "cciss%d: %p retried too " | |
2482 | "many times\n", h->ctlr, cmd); | |
198b7660 | 2483 | rq->errors = 1; |
d38ae168 MMOD |
2484 | break; |
2485 | case CMD_TIMEOUT: | |
2486 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
198b7660 | 2487 | rq->errors = 1; |
d38ae168 MMOD |
2488 | break; |
2489 | default: | |
2490 | printk(KERN_WARNING "cciss: cmd %p returned " | |
2491 | "unknown status %x\n", cmd, | |
2492 | cmd->err_info->CommandStatus); | |
198b7660 | 2493 | rq->errors = 1; |
1da177e4 | 2494 | } |
d38ae168 MMOD |
2495 | |
2496 | after_error_processing: | |
2497 | ||
1da177e4 | 2498 | /* We need to return this command */ |
7c832835 BH |
2499 | if (retry_cmd) { |
2500 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 2501 | return; |
7c832835 | 2502 | } |
03bbfee5 | 2503 | cmd->rq->data_len = 0; |
03bbfee5 | 2504 | cmd->rq->completion_data = cmd; |
2056a782 | 2505 | blk_add_trace_rq(cmd->rq->q, cmd->rq, BLK_TA_COMPLETE); |
a9925a06 | 2506 | blk_complete_request(cmd->rq); |
1da177e4 LT |
2507 | } |
2508 | ||
7c832835 BH |
2509 | /* |
2510 | * Get a request and submit it to the controller. | |
1da177e4 LT |
2511 | */ |
2512 | static void do_cciss_request(request_queue_t *q) | |
2513 | { | |
7c832835 | 2514 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 2515 | CommandList_struct *c; |
00988a35 MMOD |
2516 | sector_t start_blk; |
2517 | int seg; | |
1da177e4 LT |
2518 | struct request *creq; |
2519 | u64bit temp64; | |
2520 | struct scatterlist tmp_sg[MAXSGENTRIES]; | |
2521 | drive_info_struct *drv; | |
2522 | int i, dir; | |
2523 | ||
2524 | /* We call start_io here in case there is a command waiting on the | |
2525 | * queue that has not been sent. | |
7c832835 | 2526 | */ |
1da177e4 LT |
2527 | if (blk_queue_plugged(q)) |
2528 | goto startio; | |
2529 | ||
7c832835 | 2530 | queue: |
1da177e4 LT |
2531 | creq = elv_next_request(q); |
2532 | if (!creq) | |
2533 | goto startio; | |
2534 | ||
089fe1b2 | 2535 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
1da177e4 | 2536 | |
7c832835 | 2537 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
2538 | goto full; |
2539 | ||
2540 | blkdev_dequeue_request(creq); | |
2541 | ||
2542 | spin_unlock_irq(q->queue_lock); | |
2543 | ||
2544 | c->cmd_type = CMD_RWREQ; | |
2545 | c->rq = creq; | |
7c832835 BH |
2546 | |
2547 | /* fill in the request */ | |
1da177e4 | 2548 | drv = creq->rq_disk->private_data; |
7c832835 | 2549 | c->Header.ReplyQueue = 0; // unused in simple mode |
33079b21 MM |
2550 | /* got command from pool, so use the command block index instead */ |
2551 | /* for direct lookups. */ | |
2552 | /* The first 2 bits are reserved for controller error reporting. */ | |
2553 | c->Header.Tag.lower = (c->cmdindex << 3); | |
7c832835 BH |
2554 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
2555 | c->Header.LUN.LogDev.VolId = drv->LunID; | |
1da177e4 | 2556 | c->Header.LUN.LogDev.Mode = 1; |
7c832835 BH |
2557 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
2558 | c->Request.Type.Type = TYPE_CMD; // It is a command. | |
2559 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2560 | c->Request.Type.Direction = | |
a52de245 | 2561 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
7c832835 BH |
2562 | c->Request.Timeout = 0; // Don't time out |
2563 | c->Request.CDB[0] = | |
00988a35 | 2564 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
1da177e4 LT |
2565 | start_blk = creq->sector; |
2566 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2567 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", (int)creq->sector, |
2568 | (int)creq->nr_sectors); | |
2569 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
2570 | |
2571 | seg = blk_rq_map_sg(q, creq, tmp_sg); | |
2572 | ||
7c832835 | 2573 | /* get the DMA records for the setup */ |
1da177e4 LT |
2574 | if (c->Request.Type.Direction == XFER_READ) |
2575 | dir = PCI_DMA_FROMDEVICE; | |
2576 | else | |
2577 | dir = PCI_DMA_TODEVICE; | |
2578 | ||
7c832835 | 2579 | for (i = 0; i < seg; i++) { |
1da177e4 LT |
2580 | c->SG[i].Len = tmp_sg[i].length; |
2581 | temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page, | |
7c832835 BH |
2582 | tmp_sg[i].offset, |
2583 | tmp_sg[i].length, dir); | |
1da177e4 | 2584 | c->SG[i].Addr.lower = temp64.val32.lower; |
7c832835 BH |
2585 | c->SG[i].Addr.upper = temp64.val32.upper; |
2586 | c->SG[i].Ext = 0; // we are not chaining | |
1da177e4 | 2587 | } |
7c832835 BH |
2588 | /* track how many SG entries we are using */ |
2589 | if (seg > h->maxSG) | |
2590 | h->maxSG = seg; | |
1da177e4 LT |
2591 | |
2592 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2593 | printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", |
2594 | creq->nr_sectors, seg); | |
2595 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
2596 | |
2597 | c->Header.SGList = c->Header.SGTotal = seg; | |
03bbfee5 MMOD |
2598 | if (likely(blk_fs_request(creq))) { |
2599 | if(h->cciss_read == CCISS_READ_10) { | |
2600 | c->Request.CDB[1] = 0; | |
2601 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB | |
2602 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; | |
2603 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
2604 | c->Request.CDB[5] = start_blk & 0xff; | |
2605 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB | |
2606 | c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff; | |
2607 | c->Request.CDB[8] = creq->nr_sectors & 0xff; | |
2608 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; | |
2609 | } else { | |
2610 | c->Request.CDBLen = 16; | |
2611 | c->Request.CDB[1]= 0; | |
2612 | c->Request.CDB[2]= (start_blk >> 56) & 0xff; //MSB | |
2613 | c->Request.CDB[3]= (start_blk >> 48) & 0xff; | |
2614 | c->Request.CDB[4]= (start_blk >> 40) & 0xff; | |
2615 | c->Request.CDB[5]= (start_blk >> 32) & 0xff; | |
2616 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; | |
2617 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
2618 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
2619 | c->Request.CDB[9]= start_blk & 0xff; | |
2620 | c->Request.CDB[10]= (creq->nr_sectors >> 24) & 0xff; | |
2621 | c->Request.CDB[11]= (creq->nr_sectors >> 16) & 0xff; | |
2622 | c->Request.CDB[12]= (creq->nr_sectors >> 8) & 0xff; | |
2623 | c->Request.CDB[13]= creq->nr_sectors & 0xff; | |
2624 | c->Request.CDB[14] = c->Request.CDB[15] = 0; | |
2625 | } | |
2626 | } else if (blk_pc_request(creq)) { | |
2627 | c->Request.CDBLen = creq->cmd_len; | |
2628 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); | |
00988a35 | 2629 | } else { |
03bbfee5 MMOD |
2630 | printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); |
2631 | BUG(); | |
00988a35 | 2632 | } |
1da177e4 LT |
2633 | |
2634 | spin_lock_irq(q->queue_lock); | |
2635 | ||
7c832835 | 2636 | addQ(&(h->reqQ), c); |
1da177e4 | 2637 | h->Qdepth++; |
7c832835 BH |
2638 | if (h->Qdepth > h->maxQsinceinit) |
2639 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
2640 | |
2641 | goto queue; | |
00988a35 | 2642 | full: |
1da177e4 | 2643 | blk_stop_queue(q); |
00988a35 | 2644 | startio: |
1da177e4 LT |
2645 | /* We will already have the driver lock here so not need |
2646 | * to lock it. | |
7c832835 | 2647 | */ |
1da177e4 LT |
2648 | start_io(h); |
2649 | } | |
2650 | ||
3da8b713 | 2651 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
2652 | { | |
2653 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2654 | /* Any rejects from sendcmd() lying around? Process them first */ | |
2655 | if (h->scsi_rejects.ncompletions == 0) | |
2656 | return h->access.command_completed(h); | |
2657 | else { | |
2658 | struct sendcmd_reject_list *srl; | |
2659 | int n; | |
2660 | srl = &h->scsi_rejects; | |
2661 | n = --srl->ncompletions; | |
2662 | /* printk("cciss%d: processing saved reject\n", h->ctlr); */ | |
2663 | printk("p"); | |
2664 | return srl->complete[n]; | |
2665 | } | |
2666 | #else | |
2667 | return h->access.command_completed(h); | |
2668 | #endif | |
2669 | } | |
2670 | ||
2671 | static inline int interrupt_pending(ctlr_info_t *h) | |
2672 | { | |
2673 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2674 | return (h->access.intr_pending(h) |
3da8b713 | 2675 | || (h->scsi_rejects.ncompletions > 0)); |
2676 | #else | |
2677 | return h->access.intr_pending(h); | |
2678 | #endif | |
2679 | } | |
2680 | ||
2681 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
2682 | { | |
2683 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
2684 | return (((h->access.intr_pending(h) == 0) || |
2685 | (h->interrupts_enabled == 0)) | |
2686 | && (h->scsi_rejects.ncompletions == 0)); | |
3da8b713 | 2687 | #else |
7c832835 | 2688 | return (((h->access.intr_pending(h) == 0) || |
3da8b713 | 2689 | (h->interrupts_enabled == 0))); |
2690 | #endif | |
2691 | } | |
2692 | ||
7d12e780 | 2693 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
1da177e4 LT |
2694 | { |
2695 | ctlr_info_t *h = dev_id; | |
2696 | CommandList_struct *c; | |
2697 | unsigned long flags; | |
33079b21 | 2698 | __u32 a, a1, a2; |
1da177e4 | 2699 | |
3da8b713 | 2700 | if (interrupt_not_for_us(h)) |
1da177e4 | 2701 | return IRQ_NONE; |
1da177e4 LT |
2702 | /* |
2703 | * If there are completed commands in the completion queue, | |
2704 | * we had better do something about it. | |
2705 | */ | |
2706 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 2707 | while (interrupt_pending(h)) { |
7c832835 | 2708 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
1da177e4 | 2709 | a1 = a; |
33079b21 MM |
2710 | if ((a & 0x04)) { |
2711 | a2 = (a >> 3); | |
f880632f | 2712 | if (a2 >= h->nr_cmds) { |
7c832835 BH |
2713 | printk(KERN_WARNING |
2714 | "cciss: controller cciss%d failed, stopping.\n", | |
2715 | h->ctlr); | |
33079b21 MM |
2716 | fail_all_cmds(h->ctlr); |
2717 | return IRQ_HANDLED; | |
2718 | } | |
2719 | ||
2720 | c = h->cmd_pool + a2; | |
2721 | a = c->busaddr; | |
2722 | ||
2723 | } else { | |
7c832835 | 2724 | a &= ~3; |
33079b21 | 2725 | if ((c = h->cmpQ) == NULL) { |
7c832835 BH |
2726 | printk(KERN_WARNING |
2727 | "cciss: Completion of %08x ignored\n", | |
2728 | a1); | |
2729 | continue; | |
2730 | } | |
2731 | while (c->busaddr != a) { | |
2732 | c = c->next; | |
2733 | if (c == h->cmpQ) | |
2734 | break; | |
2735 | } | |
33079b21 | 2736 | } |
1da177e4 LT |
2737 | /* |
2738 | * If we've found the command, take it off the | |
2739 | * completion Q and free it | |
2740 | */ | |
7c832835 | 2741 | if (c->busaddr == a) { |
1da177e4 LT |
2742 | removeQ(&h->cmpQ, c); |
2743 | if (c->cmd_type == CMD_RWREQ) { | |
2744 | complete_command(h, c, 0); | |
2745 | } else if (c->cmd_type == CMD_IOCTL_PEND) { | |
2746 | complete(c->waiting); | |
2747 | } | |
2748 | # ifdef CONFIG_CISS_SCSI_TAPE | |
2749 | else if (c->cmd_type == CMD_SCSI) | |
2750 | complete_scsi_command(c, 0, a1); | |
2751 | # endif | |
2752 | continue; | |
2753 | } | |
2754 | } | |
2755 | } | |
2756 | ||
1da177e4 LT |
2757 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2758 | return IRQ_HANDLED; | |
2759 | } | |
7c832835 BH |
2760 | |
2761 | /* | |
d14c4ab5 | 2762 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 2763 | * the io functions. |
7c832835 | 2764 | * This is for debug only. |
1da177e4 LT |
2765 | */ |
2766 | #ifdef CCISS_DEBUG | |
7c832835 | 2767 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 LT |
2768 | { |
2769 | int i; | |
2770 | char temp_name[17]; | |
2771 | ||
2772 | printk("Controller Configuration information\n"); | |
2773 | printk("------------------------------------\n"); | |
7c832835 | 2774 | for (i = 0; i < 4; i++) |
1da177e4 | 2775 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
2776 | temp_name[4] = '\0'; |
2777 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 2778 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
2779 | printk(" Transport methods supported = 0x%x\n", |
2780 | readl(&(tb->TransportSupport))); | |
2781 | printk(" Transport methods active = 0x%x\n", | |
2782 | readl(&(tb->TransportActive))); | |
2783 | printk(" Requested transport Method = 0x%x\n", | |
2784 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 2785 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 2786 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 2787 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
2788 | readl(&(tb->HostWrite.CoalIntCount))); |
2789 | printk(" Max outstanding commands = 0x%d\n", | |
2790 | readl(&(tb->CmdsOutMax))); | |
2791 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
2792 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
2793 | temp_name[i] = readb(&(tb->ServerName[i])); |
2794 | temp_name[16] = '\0'; | |
2795 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 2796 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
1da177e4 | 2797 | } |
7c832835 | 2798 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2799 | |
7c832835 | 2800 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
2801 | { |
2802 | int i, offset, mem_type, bar_type; | |
7c832835 | 2803 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
2804 | return 0; |
2805 | offset = 0; | |
7c832835 BH |
2806 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
2807 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
2808 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
2809 | offset += 4; | |
2810 | else { | |
2811 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 2812 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 2813 | switch (mem_type) { |
7c832835 BH |
2814 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
2815 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
2816 | offset += 4; /* 32 bit */ | |
2817 | break; | |
2818 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
2819 | offset += 8; | |
2820 | break; | |
2821 | default: /* reserved in PCI 2.2 */ | |
2822 | printk(KERN_WARNING | |
2823 | "Base address is invalid\n"); | |
2824 | return -1; | |
1da177e4 LT |
2825 | break; |
2826 | } | |
2827 | } | |
7c832835 BH |
2828 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
2829 | return i + 1; | |
1da177e4 LT |
2830 | } |
2831 | return -1; | |
2832 | } | |
2833 | ||
fb86a35b MM |
2834 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
2835 | * controllers that are capable. If not, we use IO-APIC mode. | |
2836 | */ | |
2837 | ||
7c832835 BH |
2838 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
2839 | struct pci_dev *pdev, __u32 board_id) | |
fb86a35b MM |
2840 | { |
2841 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
2842 | int err; |
2843 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
2844 | {0, 2}, {0, 3} | |
2845 | }; | |
fb86a35b MM |
2846 | |
2847 | /* Some boards advertise MSI but don't really support it */ | |
2848 | if ((board_id == 0x40700E11) || | |
7c832835 BH |
2849 | (board_id == 0x40800E11) || |
2850 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
fb86a35b MM |
2851 | goto default_int_mode; |
2852 | ||
7c832835 BH |
2853 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
2854 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); | |
2855 | if (!err) { | |
2856 | c->intr[0] = cciss_msix_entries[0].vector; | |
2857 | c->intr[1] = cciss_msix_entries[1].vector; | |
2858 | c->intr[2] = cciss_msix_entries[2].vector; | |
2859 | c->intr[3] = cciss_msix_entries[3].vector; | |
2860 | c->msix_vector = 1; | |
2861 | return; | |
2862 | } | |
2863 | if (err > 0) { | |
2864 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
2865 | "available\n", err); | |
1ecb9c0f | 2866 | goto default_int_mode; |
7c832835 BH |
2867 | } else { |
2868 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
2869 | err); | |
1ecb9c0f | 2870 | goto default_int_mode; |
7c832835 BH |
2871 | } |
2872 | } | |
2873 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
2874 | if (!pci_enable_msi(pdev)) { | |
7c832835 | 2875 | c->msi_vector = 1; |
7c832835 BH |
2876 | } else { |
2877 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
7c832835 BH |
2878 | } |
2879 | } | |
1ecb9c0f | 2880 | default_int_mode: |
7c832835 | 2881 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 2882 | /* if we get here we're going to use the default interrupt mode */ |
7c832835 | 2883 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
fb86a35b MM |
2884 | return; |
2885 | } | |
2886 | ||
1da177e4 LT |
2887 | static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
2888 | { | |
2889 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
2890 | __u32 board_id, scratchpad = 0; | |
2891 | __u64 cfg_offset; | |
2892 | __u32 cfg_base_addr; | |
2893 | __u64 cfg_base_addr_index; | |
c33ac89b | 2894 | int i, err; |
1da177e4 LT |
2895 | |
2896 | /* check to see if controller has been disabled */ | |
2897 | /* BEFORE trying to enable it */ | |
7c832835 BH |
2898 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
2899 | if (!(command & 0x02)) { | |
2900 | printk(KERN_WARNING | |
2901 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 2902 | return -ENODEV; |
1da177e4 LT |
2903 | } |
2904 | ||
c33ac89b | 2905 | err = pci_enable_device(pdev); |
7c832835 | 2906 | if (err) { |
1da177e4 | 2907 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 2908 | return err; |
1da177e4 | 2909 | } |
1da177e4 | 2910 | |
4e570309 BH |
2911 | err = pci_request_regions(pdev, "cciss"); |
2912 | if (err) { | |
2913 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 2914 | "aborting\n"); |
872225ca | 2915 | return err; |
4e570309 BH |
2916 | } |
2917 | ||
1da177e4 LT |
2918 | subsystem_vendor_id = pdev->subsystem_vendor; |
2919 | subsystem_device_id = pdev->subsystem_device; | |
2920 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
7c832835 | 2921 | subsystem_vendor_id); |
1da177e4 | 2922 | |
1da177e4 LT |
2923 | #ifdef CCISS_DEBUG |
2924 | printk("command = %x\n", command); | |
2925 | printk("irq = %x\n", pdev->irq); | |
2926 | printk("board_id = %x\n", board_id); | |
7c832835 | 2927 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2928 | |
fb86a35b MM |
2929 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
2930 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
2931 | */ | |
2932 | cciss_interrupt_mode(c, pdev, board_id); | |
1da177e4 LT |
2933 | |
2934 | /* | |
2935 | * Memory base addr is first addr , the second points to the config | |
7c832835 | 2936 | * table |
1da177e4 LT |
2937 | */ |
2938 | ||
7c832835 | 2939 | c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */ |
1da177e4 LT |
2940 | #ifdef CCISS_DEBUG |
2941 | printk("address 0 = %x\n", c->paddr); | |
7c832835 | 2942 | #endif /* CCISS_DEBUG */ |
a5b92873 | 2943 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
1da177e4 LT |
2944 | |
2945 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
2946 | * We poll for up to 120 secs, once per 100ms. */ | |
7c832835 | 2947 | for (i = 0; i < 1200; i++) { |
1da177e4 LT |
2948 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
2949 | if (scratchpad == CCISS_FIRMWARE_READY) | |
2950 | break; | |
2951 | set_current_state(TASK_INTERRUPTIBLE); | |
7c832835 | 2952 | schedule_timeout(HZ / 10); /* wait 100ms */ |
1da177e4 LT |
2953 | } |
2954 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
2955 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
c33ac89b | 2956 | err = -ENODEV; |
4e570309 | 2957 | goto err_out_free_res; |
1da177e4 LT |
2958 | } |
2959 | ||
2960 | /* get the address index number */ | |
2961 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
2962 | cfg_base_addr &= (__u32) 0x0000ffff; | |
2963 | #ifdef CCISS_DEBUG | |
2964 | printk("cfg base address = %x\n", cfg_base_addr); | |
7c832835 BH |
2965 | #endif /* CCISS_DEBUG */ |
2966 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); | |
1da177e4 LT |
2967 | #ifdef CCISS_DEBUG |
2968 | printk("cfg base address index = %x\n", cfg_base_addr_index); | |
7c832835 | 2969 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
2970 | if (cfg_base_addr_index == -1) { |
2971 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
c33ac89b | 2972 | err = -ENODEV; |
4e570309 | 2973 | goto err_out_free_res; |
1da177e4 LT |
2974 | } |
2975 | ||
2976 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
2977 | #ifdef CCISS_DEBUG | |
2978 | printk("cfg offset = %x\n", cfg_offset); | |
7c832835 BH |
2979 | #endif /* CCISS_DEBUG */ |
2980 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
2981 | cfg_base_addr_index) + | |
2982 | cfg_offset, sizeof(CfgTable_struct)); | |
1da177e4 LT |
2983 | c->board_id = board_id; |
2984 | ||
2985 | #ifdef CCISS_DEBUG | |
945f390f | 2986 | print_cfg_table(c->cfgtable); |
7c832835 | 2987 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2988 | |
7c832835 | 2989 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
1da177e4 LT |
2990 | if (board_id == products[i].board_id) { |
2991 | c->product_name = products[i].product_name; | |
2992 | c->access = *(products[i].access); | |
f880632f | 2993 | c->nr_cmds = products[i].nr_cmds; |
1da177e4 LT |
2994 | break; |
2995 | } | |
2996 | } | |
7c832835 BH |
2997 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
2998 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
2999 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
3000 | (readb(&c->cfgtable->Signature[3]) != 'S')) { | |
1da177e4 | 3001 | printk("Does not appear to be a valid CISS config table\n"); |
c33ac89b | 3002 | err = -ENODEV; |
4e570309 | 3003 | goto err_out_free_res; |
1da177e4 | 3004 | } |
4ff9a9a4 MM |
3005 | /* We didn't find the controller in our list. We know the |
3006 | * signature is valid. If it's an HP device let's try to | |
3007 | * bind to the device and fire it up. Otherwise we bail. | |
3008 | */ | |
3009 | if (i == ARRAY_SIZE(products)) { | |
3010 | if (subsystem_vendor_id == PCI_VENDOR_ID_HP) { | |
3011 | c->product_name = products[i-1].product_name; | |
3012 | c->access = *(products[i-1].access); | |
f880632f | 3013 | c->nr_cmds = products[i-1].nr_cmds; |
4ff9a9a4 MM |
3014 | printk(KERN_WARNING "cciss: This is an unknown " |
3015 | "Smart Array controller.\n" | |
3016 | "cciss: Please update to the latest driver " | |
3017 | "available from www.hp.com.\n"); | |
3018 | } else { | |
3019 | printk(KERN_WARNING "cciss: Sorry, I don't know how" | |
3020 | " to access the Smart Array controller %08lx\n" | |
3021 | , (unsigned long)board_id); | |
3022 | err = -ENODEV; | |
3023 | goto err_out_free_res; | |
3024 | } | |
3025 | } | |
1da177e4 | 3026 | #ifdef CONFIG_X86 |
7c832835 BH |
3027 | { |
3028 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
3029 | __u32 prefetch; | |
3030 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
3031 | prefetch |= 0x100; | |
3032 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
3033 | } | |
1da177e4 LT |
3034 | #endif |
3035 | ||
f92e2f5f MM |
3036 | /* Disabling DMA prefetch for the P600 |
3037 | * An ASIC bug may result in a prefetch beyond | |
3038 | * physical memory. | |
3039 | */ | |
3040 | if(board_id == 0x3225103C) { | |
3041 | __u32 dma_prefetch; | |
3042 | dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); | |
3043 | dma_prefetch |= 0x8000; | |
3044 | writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); | |
3045 | } | |
3046 | ||
1da177e4 LT |
3047 | #ifdef CCISS_DEBUG |
3048 | printk("Trying to put board into Simple mode\n"); | |
7c832835 | 3049 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3050 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
7c832835 BH |
3051 | /* Update the field, and then ring the doorbell */ |
3052 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); | |
3053 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); | |
1da177e4 LT |
3054 | |
3055 | /* under certain very rare conditions, this can take awhile. | |
3056 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3057 | * as we enter this code.) */ | |
7c832835 | 3058 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
1da177e4 LT |
3059 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
3060 | break; | |
3061 | /* delay and try again */ | |
3062 | set_current_state(TASK_INTERRUPTIBLE); | |
3063 | schedule_timeout(10); | |
7c832835 | 3064 | } |
1da177e4 LT |
3065 | |
3066 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3067 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
3068 | readl(c->vaddr + SA5_DOORBELL)); | |
3069 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3070 | #ifdef CCISS_DEBUG |
7c832835 BH |
3071 | print_cfg_table(c->cfgtable); |
3072 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3073 | |
7c832835 | 3074 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
1da177e4 | 3075 | printk(KERN_WARNING "cciss: unable to get board into" |
7c832835 | 3076 | " simple mode\n"); |
c33ac89b | 3077 | err = -ENODEV; |
4e570309 | 3078 | goto err_out_free_res; |
1da177e4 LT |
3079 | } |
3080 | return 0; | |
3081 | ||
5faad620 | 3082 | err_out_free_res: |
872225ca MM |
3083 | /* |
3084 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3085 | * Smart Array controllers that pci_enable_device does not undo | |
3086 | */ | |
4e570309 | 3087 | pci_release_regions(pdev); |
c33ac89b | 3088 | return err; |
1da177e4 LT |
3089 | } |
3090 | ||
7c832835 BH |
3091 | /* |
3092 | * Gets information about the local volumes attached to the controller. | |
3093 | */ | |
1da177e4 LT |
3094 | static void cciss_getgeometry(int cntl_num) |
3095 | { | |
3096 | ReportLunData_struct *ld_buff; | |
1da177e4 LT |
3097 | InquiryData_struct *inq_buff; |
3098 | int return_code; | |
3099 | int i; | |
3100 | int listlength = 0; | |
3101 | __u32 lunid = 0; | |
3102 | int block_size; | |
00988a35 | 3103 | sector_t total_size; |
1da177e4 | 3104 | |
06ff37ff | 3105 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
7c832835 BH |
3106 | if (ld_buff == NULL) { |
3107 | printk(KERN_ERR "cciss: out of memory\n"); | |
3108 | return; | |
3109 | } | |
7c832835 BH |
3110 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
3111 | if (inq_buff == NULL) { | |
3112 | printk(KERN_ERR "cciss: out of memory\n"); | |
1da177e4 | 3113 | kfree(ld_buff); |
7c832835 BH |
3114 | return; |
3115 | } | |
3116 | /* Get the firmware version */ | |
3117 | return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff, | |
3118 | sizeof(InquiryData_struct), 0, 0, 0, NULL, | |
3119 | TYPE_CMD); | |
3120 | if (return_code == IO_OK) { | |
1da177e4 LT |
3121 | hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32]; |
3122 | hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33]; | |
3123 | hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34]; | |
3124 | hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35]; | |
7c832835 BH |
3125 | } else { /* send command failed */ |
3126 | ||
1da177e4 | 3127 | printk(KERN_WARNING "cciss: unable to determine firmware" |
7c832835 | 3128 | " version of controller\n"); |
1da177e4 | 3129 | } |
7c832835 BH |
3130 | /* Get the number of logical volumes */ |
3131 | return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff, | |
3132 | sizeof(ReportLunData_struct), 0, 0, 0, NULL, | |
3133 | TYPE_CMD); | |
1da177e4 | 3134 | |
7c832835 | 3135 | if (return_code == IO_OK) { |
1da177e4 LT |
3136 | #ifdef CCISS_DEBUG |
3137 | printk("LUN Data\n--------------------------\n"); | |
7c832835 BH |
3138 | #endif /* CCISS_DEBUG */ |
3139 | ||
3140 | listlength |= | |
3141 | (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24; | |
3142 | listlength |= | |
3143 | (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16; | |
3144 | listlength |= | |
3145 | (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8; | |
1da177e4 | 3146 | listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]); |
7c832835 BH |
3147 | } else { /* reading number of logical volumes failed */ |
3148 | ||
1da177e4 | 3149 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 3150 | " command failed\n"); |
1da177e4 LT |
3151 | listlength = 0; |
3152 | } | |
7c832835 BH |
3153 | hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry |
3154 | if (hba[cntl_num]->num_luns > CISS_MAX_LUN) { | |
3155 | printk(KERN_ERR | |
3156 | "ciss: only %d number of logical volumes supported\n", | |
3157 | CISS_MAX_LUN); | |
1da177e4 LT |
3158 | hba[cntl_num]->num_luns = CISS_MAX_LUN; |
3159 | } | |
3160 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3161 | printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", |
3162 | ld_buff->LUNListLength[0], ld_buff->LUNListLength[1], | |
3163 | ld_buff->LUNListLength[2], ld_buff->LUNListLength[3], | |
3164 | hba[cntl_num]->num_luns); | |
3165 | #endif /* CCISS_DEBUG */ | |
3166 | ||
3167 | hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns - 1; | |
7c832835 BH |
3168 | for (i = 0; i < CISS_MAX_LUN; i++) { |
3169 | if (i < hba[cntl_num]->num_luns) { | |
3170 | lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) | |
3171 | << 24; | |
3172 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) | |
3173 | << 16; | |
3174 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) | |
3175 | << 8; | |
3176 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
3177 | ||
3178 | hba[cntl_num]->drv[i].LunID = lunid; | |
1da177e4 LT |
3179 | |
3180 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3181 | printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i, |
3182 | ld_buff->LUN[i][0], ld_buff->LUN[i][1], | |
3183 | ld_buff->LUN[i][2], ld_buff->LUN[i][3], | |
3184 | hba[cntl_num]->drv[i].LunID); | |
3185 | #endif /* CCISS_DEBUG */ | |
00988a35 MMOD |
3186 | |
3187 | /* testing to see if 16-byte CDBs are already being used */ | |
3188 | if(hba[cntl_num]->cciss_read == CCISS_READ_16) { | |
3189 | cciss_read_capacity_16(cntl_num, i, 0, | |
7c832835 | 3190 | &total_size, &block_size); |
00988a35 MMOD |
3191 | goto geo_inq; |
3192 | } | |
3193 | cciss_read_capacity(cntl_num, i, 0, &total_size, &block_size); | |
3194 | ||
97c06978 MMOD |
3195 | /* If read_capacity returns all F's the logical is >2TB */ |
3196 | /* so we switch to 16-byte CDBs for all read/write ops */ | |
3197 | if(total_size == 0xFFFFFFFFULL) { | |
00988a35 MMOD |
3198 | cciss_read_capacity_16(cntl_num, i, 0, |
3199 | &total_size, &block_size); | |
3200 | hba[cntl_num]->cciss_read = CCISS_READ_16; | |
3201 | hba[cntl_num]->cciss_write = CCISS_WRITE_16; | |
3202 | } else { | |
3203 | hba[cntl_num]->cciss_read = CCISS_READ_10; | |
3204 | hba[cntl_num]->cciss_write = CCISS_WRITE_10; | |
3205 | } | |
3206 | geo_inq: | |
ddd47442 | 3207 | cciss_geometry_inquiry(cntl_num, i, 0, total_size, |
7c832835 BH |
3208 | block_size, inq_buff, |
3209 | &hba[cntl_num]->drv[i]); | |
ddd47442 MM |
3210 | } else { |
3211 | /* initialize raid_level to indicate a free space */ | |
3212 | hba[cntl_num]->drv[i].raid_level = -1; | |
3213 | } | |
1da177e4 LT |
3214 | } |
3215 | kfree(ld_buff); | |
1da177e4 | 3216 | kfree(inq_buff); |
7c832835 | 3217 | } |
1da177e4 LT |
3218 | |
3219 | /* Function to find the first free pointer into our hba[] array */ | |
3220 | /* Returns -1 if no free entries are left. */ | |
3221 | static int alloc_cciss_hba(void) | |
3222 | { | |
799202cb | 3223 | int i; |
1da177e4 | 3224 | |
7c832835 | 3225 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
3226 | if (!hba[i]) { |
3227 | ctlr_info_t *p; | |
06ff37ff | 3228 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
3229 | if (!p) |
3230 | goto Enomem; | |
799202cb MM |
3231 | p->gendisk[0] = alloc_disk(1 << NWD_SHIFT); |
3232 | if (!p->gendisk[0]) | |
3233 | goto Enomem; | |
1da177e4 LT |
3234 | hba[i] = p; |
3235 | return i; | |
3236 | } | |
3237 | } | |
3238 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 3239 | " of %d controllers.\n", MAX_CTLR); |
799202cb MM |
3240 | return -1; |
3241 | Enomem: | |
1da177e4 | 3242 | printk(KERN_ERR "cciss: out of memory.\n"); |
1da177e4 LT |
3243 | return -1; |
3244 | } | |
3245 | ||
3246 | static void free_hba(int i) | |
3247 | { | |
3248 | ctlr_info_t *p = hba[i]; | |
3249 | int n; | |
3250 | ||
3251 | hba[i] = NULL; | |
799202cb | 3252 | for (n = 0; n < CISS_MAX_LUN; n++) |
1da177e4 LT |
3253 | put_disk(p->gendisk[n]); |
3254 | kfree(p); | |
3255 | } | |
3256 | ||
3257 | /* | |
3258 | * This is it. Find all the controllers and register them. I really hate | |
3259 | * stealing all these major device numbers. | |
3260 | * returns the number of block devices registered. | |
3261 | */ | |
3262 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 3263 | const struct pci_device_id *ent) |
1da177e4 | 3264 | { |
1da177e4 | 3265 | int i; |
799202cb | 3266 | int j = 0; |
1da177e4 | 3267 | int rc; |
40aabb58 | 3268 | int dac; |
1da177e4 | 3269 | |
1da177e4 | 3270 | i = alloc_cciss_hba(); |
7c832835 | 3271 | if (i < 0) |
e2019b58 | 3272 | return -1; |
1f8ef380 MM |
3273 | |
3274 | hba[i]->busy_initializing = 1; | |
3275 | ||
1da177e4 LT |
3276 | if (cciss_pci_init(hba[i], pdev) != 0) |
3277 | goto clean1; | |
3278 | ||
3279 | sprintf(hba[i]->devname, "cciss%d", i); | |
3280 | hba[i]->ctlr = i; | |
3281 | hba[i]->pdev = pdev; | |
3282 | ||
3283 | /* configure PCI DMA stuff */ | |
eb0df996 | 3284 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) |
40aabb58 | 3285 | dac = 1; |
eb0df996 | 3286 | else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) |
40aabb58 | 3287 | dac = 0; |
1da177e4 | 3288 | else { |
40aabb58 | 3289 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
3290 | goto clean1; |
3291 | } | |
3292 | ||
3293 | /* | |
3294 | * register with the major number, or get a dynamic major number | |
3295 | * by passing 0 as argument. This is done for greater than | |
3296 | * 8 controller support. | |
3297 | */ | |
3298 | if (i < MAX_CTLR_ORIG) | |
564de74a | 3299 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 3300 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3301 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 3302 | printk(KERN_ERR |
7c832835 BH |
3303 | "cciss: Unable to get major number %d for %s " |
3304 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 3305 | goto clean1; |
7c832835 | 3306 | } else { |
1da177e4 LT |
3307 | if (i >= MAX_CTLR_ORIG) |
3308 | hba[i]->major = rc; | |
3309 | } | |
3310 | ||
3311 | /* make sure the board interrupts are off */ | |
3312 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
7c832835 | 3313 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
69ab3912 | 3314 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
1da177e4 | 3315 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
7c832835 | 3316 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
1da177e4 LT |
3317 | goto clean2; |
3318 | } | |
40aabb58 BH |
3319 | |
3320 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 BH |
3321 | hba[i]->devname, pdev->device, pci_name(pdev), |
3322 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); | |
3323 | ||
3324 | hba[i]->cmd_pool_bits = | |
f880632f | 3325 | kmalloc(((hba[i]->nr_cmds + BITS_PER_LONG - |
7c832835 BH |
3326 | 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL); |
3327 | hba[i]->cmd_pool = (CommandList_struct *) | |
3328 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3329 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
3330 | &(hba[i]->cmd_pool_dhandle)); |
3331 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
3332 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3333 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
3334 | &(hba[i]->errinfo_pool_dhandle)); |
3335 | if ((hba[i]->cmd_pool_bits == NULL) | |
3336 | || (hba[i]->cmd_pool == NULL) | |
3337 | || (hba[i]->errinfo_pool == NULL)) { | |
3338 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
3339 | goto clean4; |
3340 | } | |
3da8b713 | 3341 | #ifdef CONFIG_CISS_SCSI_TAPE |
7c832835 BH |
3342 | hba[i]->scsi_rejects.complete = |
3343 | kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) * | |
f880632f | 3344 | (hba[i]->nr_cmds + 5), GFP_KERNEL); |
3da8b713 | 3345 | if (hba[i]->scsi_rejects.complete == NULL) { |
7c832835 | 3346 | printk(KERN_ERR "cciss: out of memory"); |
3da8b713 | 3347 | goto clean4; |
3348 | } | |
3349 | #endif | |
1da177e4 | 3350 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 3351 | |
7c832835 BH |
3352 | /* Initialize the pdev driver private data. |
3353 | have it point to hba[i]. */ | |
1da177e4 | 3354 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
3355 | /* command and error info recs zeroed out before |
3356 | they are used */ | |
3357 | memset(hba[i]->cmd_pool_bits, 0, | |
f880632f | 3358 | ((hba[i]->nr_cmds + BITS_PER_LONG - |
7c832835 | 3359 | 1) / BITS_PER_LONG) * sizeof(unsigned long)); |
1da177e4 | 3360 | |
7c832835 BH |
3361 | #ifdef CCISS_DEBUG |
3362 | printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n", i); | |
3363 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
3364 | |
3365 | cciss_getgeometry(i); | |
3366 | ||
3367 | cciss_scsi_setup(i); | |
3368 | ||
3369 | /* Turn the interrupts on so we can service requests */ | |
3370 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
3371 | ||
3372 | cciss_procinit(i); | |
92c4231a MM |
3373 | |
3374 | hba[i]->cciss_max_sectors = 2048; | |
3375 | ||
d6dbf42e | 3376 | hba[i]->busy_initializing = 0; |
1da177e4 | 3377 | |
799202cb | 3378 | do { |
ad2b9312 MM |
3379 | drive_info_struct *drv = &(hba[i]->drv[j]); |
3380 | struct gendisk *disk = hba[i]->gendisk[j]; | |
799202cb MM |
3381 | request_queue_t *q; |
3382 | ||
3383 | /* Check if the disk was allocated already */ | |
3384 | if (!disk){ | |
3385 | hba[i]->gendisk[j] = alloc_disk(1 << NWD_SHIFT); | |
3386 | disk = hba[i]->gendisk[j]; | |
3387 | } | |
3388 | ||
3389 | /* Check that the disk was able to be allocated */ | |
3390 | if (!disk) { | |
3391 | printk(KERN_ERR "cciss: unable to allocate memory for disk %d\n", j); | |
3392 | goto clean4; | |
3393 | } | |
ad2b9312 MM |
3394 | |
3395 | q = blk_init_queue(do_cciss_request, &hba[i]->lock); | |
3396 | if (!q) { | |
3397 | printk(KERN_ERR | |
7c832835 BH |
3398 | "cciss: unable to allocate queue for disk %d\n", |
3399 | j); | |
799202cb | 3400 | goto clean4; |
ad2b9312 MM |
3401 | } |
3402 | drv->queue = q; | |
3403 | ||
3404 | q->backing_dev_info.ra_pages = READ_AHEAD; | |
a9925a06 JA |
3405 | blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask); |
3406 | ||
3407 | /* This is a hardware imposed limit. */ | |
3408 | blk_queue_max_hw_segments(q, MAXSGENTRIES); | |
1da177e4 | 3409 | |
a9925a06 JA |
3410 | /* This is a limit in the driver and could be eliminated. */ |
3411 | blk_queue_max_phys_segments(q, MAXSGENTRIES); | |
1da177e4 | 3412 | |
92c4231a | 3413 | blk_queue_max_sectors(q, hba[i]->cciss_max_sectors); |
1da177e4 | 3414 | |
a9925a06 | 3415 | blk_queue_softirq_done(q, cciss_softirq_done); |
1da177e4 | 3416 | |
ad2b9312 | 3417 | q->queuedata = hba[i]; |
1da177e4 | 3418 | sprintf(disk->disk_name, "cciss/c%dd%d", i, j); |
1da177e4 LT |
3419 | disk->major = hba[i]->major; |
3420 | disk->first_minor = j << NWD_SHIFT; | |
3421 | disk->fops = &cciss_fops; | |
ad2b9312 | 3422 | disk->queue = q; |
1da177e4 | 3423 | disk->private_data = drv; |
27c0ff86 | 3424 | disk->driverfs_dev = &pdev->dev; |
1da177e4 LT |
3425 | /* we must register the controller even if no disks exist */ |
3426 | /* this is for the online array utilities */ | |
7c832835 | 3427 | if (!drv->heads && j) |
1da177e4 | 3428 | continue; |
ad2b9312 | 3429 | blk_queue_hardsect_size(q, drv->block_size); |
1da177e4 LT |
3430 | set_capacity(disk, drv->nr_blocks); |
3431 | add_disk(disk); | |
799202cb MM |
3432 | j++; |
3433 | } while (j <= hba[i]->highest_lun); | |
ad2b9312 | 3434 | |
e2019b58 | 3435 | return 1; |
1da177e4 | 3436 | |
7c832835 | 3437 | clean4: |
3da8b713 | 3438 | #ifdef CONFIG_CISS_SCSI_TAPE |
1acc0b0b | 3439 | kfree(hba[i]->scsi_rejects.complete); |
3da8b713 | 3440 | #endif |
6044ec88 | 3441 | kfree(hba[i]->cmd_pool_bits); |
7c832835 | 3442 | if (hba[i]->cmd_pool) |
1da177e4 | 3443 | pci_free_consistent(hba[i]->pdev, |
f880632f | 3444 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
3445 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
3446 | if (hba[i]->errinfo_pool) | |
1da177e4 | 3447 | pci_free_consistent(hba[i]->pdev, |
f880632f | 3448 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
3449 | hba[i]->errinfo_pool, |
3450 | hba[i]->errinfo_pool_dhandle); | |
fb86a35b | 3451 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
7c832835 | 3452 | clean2: |
1da177e4 | 3453 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3454 | clean1: |
1f8ef380 | 3455 | hba[i]->busy_initializing = 0; |
799202cb MM |
3456 | /* cleanup any queues that may have been initialized */ |
3457 | for (j=0; j <= hba[i]->highest_lun; j++){ | |
3458 | drive_info_struct *drv = &(hba[i]->drv[j]); | |
3459 | if (drv->queue) | |
3460 | blk_cleanup_queue(drv->queue); | |
3461 | } | |
872225ca MM |
3462 | /* |
3463 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3464 | * Smart Array controllers that pci_enable_device does not undo | |
3465 | */ | |
799202cb | 3466 | pci_release_regions(pdev); |
799202cb | 3467 | pci_set_drvdata(pdev, NULL); |
61808c2b | 3468 | free_hba(i); |
e2019b58 | 3469 | return -1; |
1da177e4 LT |
3470 | } |
3471 | ||
de69fee8 | 3472 | static void cciss_remove_one(struct pci_dev *pdev) |
1da177e4 LT |
3473 | { |
3474 | ctlr_info_t *tmp_ptr; | |
3475 | int i, j; | |
3476 | char flush_buf[4]; | |
7c832835 | 3477 | int return_code; |
1da177e4 | 3478 | |
7c832835 BH |
3479 | if (pci_get_drvdata(pdev) == NULL) { |
3480 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
3481 | return; |
3482 | } | |
3483 | tmp_ptr = pci_get_drvdata(pdev); | |
3484 | i = tmp_ptr->ctlr; | |
7c832835 | 3485 | if (hba[i] == NULL) { |
1da177e4 | 3486 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 3487 | "already be removed \n"); |
1da177e4 LT |
3488 | return; |
3489 | } | |
b6550777 BH |
3490 | |
3491 | remove_proc_entry(hba[i]->devname, proc_cciss); | |
3492 | unregister_blkdev(hba[i]->major, hba[i]->devname); | |
3493 | ||
3494 | /* remove it from the disk list */ | |
3495 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
3496 | struct gendisk *disk = hba[i]->gendisk[j]; | |
3497 | if (disk) { | |
3498 | request_queue_t *q = disk->queue; | |
3499 | ||
3500 | if (disk->flags & GENHD_FL_UP) | |
3501 | del_gendisk(disk); | |
3502 | if (q) | |
3503 | blk_cleanup_queue(q); | |
3504 | } | |
3505 | } | |
3506 | ||
3507 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ | |
3508 | ||
1da177e4 LT |
3509 | /* Turn board interrupts off and send the flush cache command */ |
3510 | /* sendcmd will turn off interrupt, and send the flush... | |
7c832835 | 3511 | * To write all data in the battery backed cache to disks */ |
1da177e4 LT |
3512 | memset(flush_buf, 0, 4); |
3513 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL, | |
7c832835 | 3514 | TYPE_CMD); |
de69fee8 MMOD |
3515 | if (return_code == IO_OK) { |
3516 | printk(KERN_INFO "Completed flushing cache on controller %d\n", i); | |
3517 | } else { | |
3518 | printk(KERN_WARNING "Error flushing cache on controller %d\n", i); | |
1da177e4 | 3519 | } |
fb86a35b MM |
3520 | free_irq(hba[i]->intr[2], hba[i]); |
3521 | ||
3522 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3523 | if (hba[i]->msix_vector) |
3524 | pci_disable_msix(hba[i]->pdev); | |
3525 | else if (hba[i]->msi_vector) | |
3526 | pci_disable_msi(hba[i]->pdev); | |
3527 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 3528 | |
1da177e4 | 3529 | iounmap(hba[i]->vaddr); |
1da177e4 | 3530 | |
f880632f | 3531 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
1da177e4 | 3532 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
f880632f | 3533 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 | 3534 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
1da177e4 | 3535 | kfree(hba[i]->cmd_pool_bits); |
3da8b713 | 3536 | #ifdef CONFIG_CISS_SCSI_TAPE |
3537 | kfree(hba[i]->scsi_rejects.complete); | |
3538 | #endif | |
872225ca MM |
3539 | /* |
3540 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3541 | * Smart Array controllers that pci_enable_device does not undo | |
3542 | */ | |
7c832835 | 3543 | pci_release_regions(pdev); |
4e570309 | 3544 | pci_set_drvdata(pdev, NULL); |
1da177e4 | 3545 | free_hba(i); |
7c832835 | 3546 | } |
1da177e4 LT |
3547 | |
3548 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
3549 | .name = "cciss", |
3550 | .probe = cciss_init_one, | |
3551 | .remove = __devexit_p(cciss_remove_one), | |
3552 | .id_table = cciss_pci_device_id, /* id_table */ | |
de69fee8 | 3553 | .shutdown = cciss_remove_one, |
1da177e4 LT |
3554 | }; |
3555 | ||
3556 | /* | |
3557 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 3558 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
3559 | */ |
3560 | static int __init cciss_init(void) | |
3561 | { | |
3562 | printk(KERN_INFO DRIVER_NAME "\n"); | |
3563 | ||
3564 | /* Register for our PCI devices */ | |
9bfab8ce | 3565 | return pci_register_driver(&cciss_pci_driver); |
1da177e4 LT |
3566 | } |
3567 | ||
3568 | static void __exit cciss_cleanup(void) | |
3569 | { | |
3570 | int i; | |
3571 | ||
3572 | pci_unregister_driver(&cciss_pci_driver); | |
3573 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
3574 | for (i = 0; i < MAX_CTLR; i++) { |
3575 | if (hba[i] != NULL) { | |
1da177e4 | 3576 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 3577 | " controller %d\n", i); |
1da177e4 LT |
3578 | cciss_remove_one(hba[i]->pdev); |
3579 | } | |
3580 | } | |
3581 | remove_proc_entry("cciss", proc_root_driver); | |
3582 | } | |
3583 | ||
33079b21 MM |
3584 | static void fail_all_cmds(unsigned long ctlr) |
3585 | { | |
3586 | /* If we get here, the board is apparently dead. */ | |
3587 | ctlr_info_t *h = hba[ctlr]; | |
3588 | CommandList_struct *c; | |
3589 | unsigned long flags; | |
3590 | ||
3591 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); | |
7c832835 | 3592 | h->alive = 0; /* the controller apparently died... */ |
33079b21 MM |
3593 | |
3594 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
3595 | ||
7c832835 | 3596 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
33079b21 MM |
3597 | |
3598 | /* move everything off the request queue onto the completed queue */ | |
7c832835 | 3599 | while ((c = h->reqQ) != NULL) { |
33079b21 MM |
3600 | removeQ(&(h->reqQ), c); |
3601 | h->Qdepth--; | |
7c832835 | 3602 | addQ(&(h->cmpQ), c); |
33079b21 MM |
3603 | } |
3604 | ||
3605 | /* Now, fail everything on the completed queue with a HW error */ | |
7c832835 | 3606 | while ((c = h->cmpQ) != NULL) { |
33079b21 MM |
3607 | removeQ(&h->cmpQ, c); |
3608 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
3609 | if (c->cmd_type == CMD_RWREQ) { | |
3610 | complete_command(h, c, 0); | |
3611 | } else if (c->cmd_type == CMD_IOCTL_PEND) | |
3612 | complete(c->waiting); | |
3613 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
3614 | else if (c->cmd_type == CMD_SCSI) |
3615 | complete_scsi_command(c, 0, 0); | |
33079b21 MM |
3616 | #endif |
3617 | } | |
3618 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
3619 | return; | |
3620 | } | |
3621 | ||
1da177e4 LT |
3622 | module_init(cciss_init); |
3623 | module_exit(cciss_cleanup); |