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 | ||
23 | #include <linux/config.h> /* CONFIG_PROC_FS */ | |
24 | #include <linux/module.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/types.h> | |
27 | #include <linux/pci.h> | |
28 | #include <linux/kernel.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/delay.h> | |
31 | #include <linux/major.h> | |
32 | #include <linux/fs.h> | |
33 | #include <linux/bio.h> | |
34 | #include <linux/blkpg.h> | |
35 | #include <linux/timer.h> | |
36 | #include <linux/proc_fs.h> | |
7c832835 | 37 | #include <linux/init.h> |
1da177e4 LT |
38 | #include <linux/hdreg.h> |
39 | #include <linux/spinlock.h> | |
40 | #include <linux/compat.h> | |
2056a782 | 41 | #include <linux/blktrace_api.h> |
1da177e4 LT |
42 | #include <asm/uaccess.h> |
43 | #include <asm/io.h> | |
44 | ||
eb0df996 | 45 | #include <linux/dma-mapping.h> |
1da177e4 LT |
46 | #include <linux/blkdev.h> |
47 | #include <linux/genhd.h> | |
48 | #include <linux/completion.h> | |
49 | ||
50 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) | |
fb86a35b MM |
51 | #define DRIVER_NAME "HP CISS Driver (v 2.6.10)" |
52 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,10) | |
1da177e4 LT |
53 | |
54 | /* Embedded module documentation macros - see modules.h */ | |
55 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
fb86a35b | 56 | MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.10"); |
1da177e4 | 57 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
9dc7a86e | 58 | " SA6i P600 P800 P400 P400i E200 E200i"); |
1da177e4 LT |
59 | MODULE_LICENSE("GPL"); |
60 | ||
61 | #include "cciss_cmd.h" | |
62 | #include "cciss.h" | |
63 | #include <linux/cciss_ioctl.h> | |
64 | ||
65 | /* define the PCI info for the cards we can control */ | |
66 | static const struct pci_device_id cciss_pci_device_id[] = { | |
7c832835 BH |
67 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, |
68 | 0x0E11, 0x4070, 0, 0, 0}, | |
69 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, | |
70 | 0x0E11, 0x4080, 0, 0, 0}, | |
71 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, | |
72 | 0x0E11, 0x4082, 0, 0, 0}, | |
73 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, | |
74 | 0x0E11, 0x4083, 0, 0, 0}, | |
75 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, | |
76 | 0x0E11, 0x409A, 0, 0, 0}, | |
77 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, | |
78 | 0x0E11, 0x409B, 0, 0, 0}, | |
79 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, | |
80 | 0x0E11, 0x409C, 0, 0, 0}, | |
81 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, | |
82 | 0x0E11, 0x409D, 0, 0, 0}, | |
83 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, | |
84 | 0x0E11, 0x4091, 0, 0, 0}, | |
85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, | |
86 | 0x103C, 0x3225, 0, 0, 0}, | |
87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, | |
88 | 0x103c, 0x3223, 0, 0, 0}, | |
89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, | |
90 | 0x103c, 0x3234, 0, 0, 0}, | |
91 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, | |
92 | 0x103c, 0x3235, 0, 0, 0}, | |
93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, | |
94 | 0x103c, 0x3211, 0, 0, 0}, | |
95 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, | |
96 | 0x103c, 0x3212, 0, 0, 0}, | |
97 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, | |
98 | 0x103c, 0x3213, 0, 0, 0}, | |
99 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, | |
100 | 0x103c, 0x3214, 0, 0, 0}, | |
101 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, | |
102 | 0x103c, 0x3215, 0, 0, 0}, | |
1da177e4 LT |
103 | {0,} |
104 | }; | |
7c832835 | 105 | |
1da177e4 LT |
106 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
107 | ||
1da177e4 LT |
108 | /* board_id = Subsystem Device ID & Vendor ID |
109 | * product = Marketing Name for the board | |
7c832835 | 110 | * access = Address of the struct of function pointers |
1da177e4 LT |
111 | */ |
112 | static struct board_type products[] = { | |
7c832835 BH |
113 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
114 | {0x40800E11, "Smart Array 5i", &SA5B_access}, | |
115 | {0x40820E11, "Smart Array 532", &SA5B_access}, | |
116 | {0x40830E11, "Smart Array 5312", &SA5B_access}, | |
117 | {0x409A0E11, "Smart Array 641", &SA5_access}, | |
118 | {0x409B0E11, "Smart Array 642", &SA5_access}, | |
119 | {0x409C0E11, "Smart Array 6400", &SA5_access}, | |
120 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, | |
121 | {0x40910E11, "Smart Array 6i", &SA5_access}, | |
122 | {0x3225103C, "Smart Array P600", &SA5_access}, | |
123 | {0x3223103C, "Smart Array P800", &SA5_access}, | |
124 | {0x3234103C, "Smart Array P400", &SA5_access}, | |
125 | {0x3235103C, "Smart Array P400i", &SA5_access}, | |
126 | {0x3211103C, "Smart Array E200i", &SA5_access}, | |
127 | {0x3212103C, "Smart Array E200", &SA5_access}, | |
128 | {0x3213103C, "Smart Array E200i", &SA5_access}, | |
129 | {0x3214103C, "Smart Array E200i", &SA5_access}, | |
130 | {0x3215103C, "Smart Array E200i", &SA5_access}, | |
1da177e4 LT |
131 | }; |
132 | ||
d14c4ab5 | 133 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
7c832835 | 134 | #define MAX_CONFIG_WAIT 30000 |
1da177e4 LT |
135 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
136 | ||
137 | /*define how many times we will try a command because of bus resets */ | |
138 | #define MAX_CMD_RETRIES 3 | |
139 | ||
140 | #define READ_AHEAD 1024 | |
7c832835 | 141 | #define NR_CMDS 384 /* #commands that can be outstanding */ |
1da177e4 LT |
142 | #define MAX_CTLR 32 |
143 | ||
144 | /* Originally cciss driver only supports 8 major numbers */ | |
145 | #define MAX_CTLR_ORIG 8 | |
146 | ||
1da177e4 LT |
147 | static ctlr_info_t *hba[MAX_CTLR]; |
148 | ||
149 | static void do_cciss_request(request_queue_t *q); | |
3da8b713 | 150 | static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs); |
1da177e4 LT |
151 | static int cciss_open(struct inode *inode, struct file *filep); |
152 | static int cciss_release(struct inode *inode, struct file *filep); | |
7c832835 BH |
153 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
154 | unsigned int cmd, unsigned long arg); | |
a885c8c4 | 155 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 LT |
156 | |
157 | static int revalidate_allvol(ctlr_info_t *host); | |
158 | static int cciss_revalidate(struct gendisk *disk); | |
ddd47442 | 159 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk); |
7c832835 BH |
160 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, |
161 | int clear_all); | |
1da177e4 | 162 | |
ddd47442 | 163 | static void cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf, |
7c832835 BH |
164 | int withirq, unsigned int *total_size, |
165 | unsigned int *block_size); | |
166 | static void cciss_geometry_inquiry(int ctlr, int logvol, int withirq, | |
167 | unsigned int total_size, | |
168 | unsigned int block_size, | |
169 | InquiryData_struct *inq_buff, | |
170 | drive_info_struct *drv); | |
1da177e4 | 171 | static void cciss_getgeometry(int cntl_num); |
7c832835 BH |
172 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
173 | __u32); | |
174 | static void start_io(ctlr_info_t *h); | |
175 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, | |
176 | unsigned int use_unit_num, unsigned int log_unit, | |
177 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); | |
178 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, | |
179 | unsigned int use_unit_num, unsigned int log_unit, | |
180 | __u8 page_code, int cmd_type); | |
1da177e4 | 181 | |
33079b21 MM |
182 | static void fail_all_cmds(unsigned long ctlr); |
183 | ||
1da177e4 | 184 | #ifdef CONFIG_PROC_FS |
7c832835 BH |
185 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
186 | int length, int *eof, void *data); | |
1da177e4 LT |
187 | static void cciss_procinit(int i); |
188 | #else | |
7c832835 BH |
189 | static void cciss_procinit(int i) |
190 | { | |
191 | } | |
192 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
193 | |
194 | #ifdef CONFIG_COMPAT | |
195 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg); | |
196 | #endif | |
197 | ||
7c832835 BH |
198 | static struct block_device_operations cciss_fops = { |
199 | .owner = THIS_MODULE, | |
200 | .open = cciss_open, | |
201 | .release = cciss_release, | |
202 | .ioctl = cciss_ioctl, | |
203 | .getgeo = cciss_getgeo, | |
1da177e4 | 204 | #ifdef CONFIG_COMPAT |
7c832835 | 205 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 206 | #endif |
7c832835 | 207 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
208 | }; |
209 | ||
210 | /* | |
211 | * Enqueuing and dequeuing functions for cmdlists. | |
212 | */ | |
213 | static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c) | |
214 | { | |
7c832835 BH |
215 | if (*Qptr == NULL) { |
216 | *Qptr = c; | |
217 | c->next = c->prev = c; | |
218 | } else { | |
219 | c->prev = (*Qptr)->prev; | |
220 | c->next = (*Qptr); | |
221 | (*Qptr)->prev->next = c; | |
222 | (*Qptr)->prev = c; | |
223 | } | |
1da177e4 LT |
224 | } |
225 | ||
7c832835 BH |
226 | static inline CommandList_struct *removeQ(CommandList_struct **Qptr, |
227 | CommandList_struct *c) | |
1da177e4 | 228 | { |
7c832835 BH |
229 | if (c && c->next != c) { |
230 | if (*Qptr == c) | |
231 | *Qptr = c->next; | |
232 | c->prev->next = c->next; | |
233 | c->next->prev = c->prev; | |
234 | } else { | |
235 | *Qptr = NULL; | |
236 | } | |
237 | return c; | |
1da177e4 LT |
238 | } |
239 | ||
240 | #include "cciss_scsi.c" /* For SCSI tape support */ | |
241 | ||
242 | #ifdef CONFIG_PROC_FS | |
243 | ||
244 | /* | |
245 | * Report information about this controller. | |
246 | */ | |
247 | #define ENG_GIG 1000000000 | |
248 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
249 | #define RAID_UNKNOWN 6 | |
7c832835 BH |
250 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
251 | "UNKNOWN" | |
252 | }; | |
1da177e4 LT |
253 | |
254 | static struct proc_dir_entry *proc_cciss; | |
255 | ||
7c832835 BH |
256 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
257 | int length, int *eof, void *data) | |
1da177e4 | 258 | { |
7c832835 BH |
259 | off_t pos = 0; |
260 | off_t len = 0; | |
261 | int size, i, ctlr; | |
262 | ctlr_info_t *h = (ctlr_info_t *) data; | |
263 | drive_info_struct *drv; | |
1da177e4 | 264 | unsigned long flags; |
7c832835 | 265 | sector_t vol_sz, vol_sz_frac; |
1da177e4 | 266 | |
7c832835 | 267 | ctlr = h->ctlr; |
1da177e4 LT |
268 | |
269 | /* prevent displaying bogus info during configuration | |
270 | * or deconfiguration of a logical volume | |
271 | */ | |
272 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
273 | if (h->busy_configuring) { | |
274 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 275 | return -EBUSY; |
1da177e4 LT |
276 | } |
277 | h->busy_configuring = 1; | |
278 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
279 | ||
7c832835 BH |
280 | size = sprintf(buffer, "%s: HP %s Controller\n" |
281 | "Board ID: 0x%08lx\n" | |
282 | "Firmware Version: %c%c%c%c\n" | |
283 | "IRQ: %d\n" | |
284 | "Logical drives: %d\n" | |
285 | "Current Q depth: %d\n" | |
286 | "Current # commands on controller: %d\n" | |
287 | "Max Q depth since init: %d\n" | |
288 | "Max # commands on controller since init: %d\n" | |
289 | "Max SG entries since init: %d\n\n", | |
290 | h->devname, | |
291 | h->product_name, | |
292 | (unsigned long)h->board_id, | |
293 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
294 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], | |
295 | h->num_luns, h->Qdepth, h->commands_outstanding, | |
296 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
297 | ||
298 | pos += size; | |
299 | len += size; | |
1da177e4 | 300 | cciss_proc_tape_report(ctlr, buffer, &pos, &len); |
7c832835 | 301 | for (i = 0; i <= h->highest_lun; i++) { |
1da177e4 | 302 | |
7c832835 | 303 | drv = &h->drv[i]; |
ddd47442 | 304 | if (drv->heads == 0) |
1da177e4 LT |
305 | continue; |
306 | ||
307 | vol_sz = drv->nr_blocks; | |
308 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
309 | vol_sz_frac *= 100; | |
310 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
311 | ||
312 | if (drv->raid_level > 5) | |
313 | drv->raid_level = RAID_UNKNOWN; | |
7c832835 BH |
314 | size = sprintf(buffer + len, "cciss/c%dd%d:" |
315 | "\t%4u.%02uGB\tRAID %s\n", | |
316 | ctlr, i, (int)vol_sz, (int)vol_sz_frac, | |
317 | raid_label[drv->raid_level]); | |
318 | pos += size; | |
319 | len += size; | |
320 | } | |
321 | ||
322 | *eof = 1; | |
323 | *start = buffer + offset; | |
324 | len -= offset; | |
325 | if (len > length) | |
326 | len = length; | |
1da177e4 | 327 | h->busy_configuring = 0; |
7c832835 | 328 | return len; |
1da177e4 LT |
329 | } |
330 | ||
7c832835 BH |
331 | static int |
332 | cciss_proc_write(struct file *file, const char __user *buffer, | |
333 | unsigned long count, void *data) | |
1da177e4 LT |
334 | { |
335 | unsigned char cmd[80]; | |
336 | int len; | |
337 | #ifdef CONFIG_CISS_SCSI_TAPE | |
338 | ctlr_info_t *h = (ctlr_info_t *) data; | |
339 | int rc; | |
340 | #endif | |
341 | ||
7c832835 BH |
342 | if (count > sizeof(cmd) - 1) |
343 | return -EINVAL; | |
344 | if (copy_from_user(cmd, buffer, count)) | |
345 | return -EFAULT; | |
1da177e4 LT |
346 | cmd[count] = '\0'; |
347 | len = strlen(cmd); // above 3 lines ensure safety | |
7c832835 | 348 | if (len && cmd[len - 1] == '\n') |
1da177e4 LT |
349 | cmd[--len] = '\0'; |
350 | # ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
351 | if (strcmp("engage scsi", cmd) == 0) { |
352 | rc = cciss_engage_scsi(h->ctlr); | |
353 | if (rc != 0) | |
354 | return -rc; | |
355 | return count; | |
356 | } | |
357 | /* might be nice to have "disengage" too, but it's not | |
358 | safely possible. (only 1 module use count, lock issues.) */ | |
1da177e4 LT |
359 | # endif |
360 | return -EINVAL; | |
361 | } | |
362 | ||
363 | /* | |
364 | * Get us a file in /proc/cciss that says something about each controller. | |
365 | * Create /proc/cciss if it doesn't exist yet. | |
366 | */ | |
367 | static void __devinit cciss_procinit(int i) | |
368 | { | |
369 | struct proc_dir_entry *pde; | |
370 | ||
7c832835 BH |
371 | if (proc_cciss == NULL) { |
372 | proc_cciss = proc_mkdir("cciss", proc_root_driver); | |
373 | if (!proc_cciss) | |
1da177e4 | 374 | return; |
7c832835 | 375 | } |
1da177e4 | 376 | |
7c832835 BH |
377 | pde = create_proc_read_entry(hba[i]->devname, |
378 | S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH, | |
379 | proc_cciss, cciss_proc_get_info, hba[i]); | |
1da177e4 LT |
380 | pde->write_proc = cciss_proc_write; |
381 | } | |
7c832835 | 382 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 383 | |
7c832835 BH |
384 | /* |
385 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 386 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
387 | * which ones are free or in use. For operations that can wait for kmalloc |
388 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
389 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
390 | */ | |
391 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
392 | { |
393 | CommandList_struct *c; | |
7c832835 | 394 | int i; |
1da177e4 LT |
395 | u64bit temp64; |
396 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
397 | ||
7c832835 BH |
398 | if (!get_from_pool) { |
399 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
400 | sizeof(CommandList_struct), &cmd_dma_handle); | |
401 | if (c == NULL) | |
402 | return NULL; | |
1da177e4 LT |
403 | memset(c, 0, sizeof(CommandList_struct)); |
404 | ||
33079b21 MM |
405 | c->cmdindex = -1; |
406 | ||
7c832835 BH |
407 | c->err_info = (ErrorInfo_struct *) |
408 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
409 | &err_dma_handle); | |
410 | ||
411 | if (c->err_info == NULL) { | |
412 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
413 | sizeof(CommandList_struct), c, cmd_dma_handle); |
414 | return NULL; | |
415 | } | |
416 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
417 | } else { /* get it out of the controllers pool */ |
418 | ||
419 | do { | |
420 | i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS); | |
421 | if (i == NR_CMDS) | |
422 | return NULL; | |
423 | } while (test_and_set_bit | |
424 | (i & (BITS_PER_LONG - 1), | |
425 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
426 | #ifdef CCISS_DEBUG |
427 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
428 | #endif | |
7c832835 | 429 | c = h->cmd_pool + i; |
1da177e4 | 430 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
431 | cmd_dma_handle = h->cmd_pool_dhandle |
432 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
433 | c->err_info = h->errinfo_pool + i; |
434 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
435 | err_dma_handle = h->errinfo_pool_dhandle |
436 | + i * sizeof(ErrorInfo_struct); | |
437 | h->nr_allocs++; | |
33079b21 MM |
438 | |
439 | c->cmdindex = i; | |
7c832835 | 440 | } |
1da177e4 LT |
441 | |
442 | c->busaddr = (__u32) cmd_dma_handle; | |
7c832835 | 443 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
444 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
445 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
446 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 447 | |
7c832835 BH |
448 | c->ctlr = h->ctlr; |
449 | return c; | |
1da177e4 LT |
450 | } |
451 | ||
7c832835 BH |
452 | /* |
453 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
454 | */ |
455 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
456 | { | |
457 | int i; | |
458 | u64bit temp64; | |
459 | ||
7c832835 | 460 | if (!got_from_pool) { |
1da177e4 LT |
461 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
462 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
463 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
464 | c->err_info, (dma_addr_t) temp64.val); | |
465 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
466 | c, (dma_addr_t) c->busaddr); | |
467 | } else { | |
1da177e4 | 468 | i = c - h->cmd_pool; |
7c832835 BH |
469 | clear_bit(i & (BITS_PER_LONG - 1), |
470 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
471 | h->nr_frees++; | |
472 | } | |
1da177e4 LT |
473 | } |
474 | ||
475 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
476 | { | |
7c832835 | 477 | return disk->queue->queuedata; |
1da177e4 LT |
478 | } |
479 | ||
480 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
481 | { | |
482 | return disk->private_data; | |
483 | } | |
484 | ||
485 | /* | |
486 | * Open. Make sure the device is really there. | |
487 | */ | |
488 | static int cciss_open(struct inode *inode, struct file *filep) | |
489 | { | |
490 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
491 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
492 | ||
493 | #ifdef CCISS_DEBUG | |
494 | printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name); | |
7c832835 | 495 | #endif /* CCISS_DEBUG */ |
1da177e4 | 496 | |
ddd47442 MM |
497 | if (host->busy_initializing || drv->busy_configuring) |
498 | return -EBUSY; | |
1da177e4 LT |
499 | /* |
500 | * Root is allowed to open raw volume zero even if it's not configured | |
501 | * so array config can still work. Root is also allowed to open any | |
502 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
503 | * disk information. I don't think I really like this | |
504 | * but I'm already using way to many device nodes to claim another one | |
505 | * for "raw controller". | |
506 | */ | |
507 | if (drv->nr_blocks == 0) { | |
7c832835 | 508 | if (iminor(inode) != 0) { /* not node 0? */ |
1da177e4 LT |
509 | /* if not node 0 make sure it is a partition = 0 */ |
510 | if (iminor(inode) & 0x0f) { | |
7c832835 | 511 | return -ENXIO; |
1da177e4 LT |
512 | /* if it is, make sure we have a LUN ID */ |
513 | } else if (drv->LunID == 0) { | |
514 | return -ENXIO; | |
515 | } | |
516 | } | |
517 | if (!capable(CAP_SYS_ADMIN)) | |
518 | return -EPERM; | |
519 | } | |
520 | drv->usage_count++; | |
521 | host->usage_count++; | |
522 | return 0; | |
523 | } | |
7c832835 | 524 | |
1da177e4 LT |
525 | /* |
526 | * Close. Sync first. | |
527 | */ | |
528 | static int cciss_release(struct inode *inode, struct file *filep) | |
529 | { | |
530 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
531 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
532 | ||
533 | #ifdef CCISS_DEBUG | |
7c832835 BH |
534 | printk(KERN_DEBUG "cciss_release %s\n", |
535 | inode->i_bdev->bd_disk->disk_name); | |
536 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
537 | |
538 | drv->usage_count--; | |
539 | host->usage_count--; | |
540 | return 0; | |
541 | } | |
542 | ||
543 | #ifdef CONFIG_COMPAT | |
544 | ||
545 | static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
546 | { | |
547 | int ret; | |
548 | lock_kernel(); | |
549 | ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg); | |
550 | unlock_kernel(); | |
551 | return ret; | |
552 | } | |
553 | ||
7c832835 BH |
554 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
555 | unsigned long arg); | |
556 | static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, | |
557 | unsigned long arg); | |
1da177e4 LT |
558 | |
559 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
560 | { | |
561 | switch (cmd) { | |
562 | case CCISS_GETPCIINFO: | |
563 | case CCISS_GETINTINFO: | |
564 | case CCISS_SETINTINFO: | |
565 | case CCISS_GETNODENAME: | |
566 | case CCISS_SETNODENAME: | |
567 | case CCISS_GETHEARTBEAT: | |
568 | case CCISS_GETBUSTYPES: | |
569 | case CCISS_GETFIRMVER: | |
570 | case CCISS_GETDRIVVER: | |
571 | case CCISS_REVALIDVOLS: | |
572 | case CCISS_DEREGDISK: | |
573 | case CCISS_REGNEWDISK: | |
574 | case CCISS_REGNEWD: | |
575 | case CCISS_RESCANDISK: | |
576 | case CCISS_GETLUNINFO: | |
577 | return do_ioctl(f, cmd, arg); | |
578 | ||
579 | case CCISS_PASSTHRU32: | |
580 | return cciss_ioctl32_passthru(f, cmd, arg); | |
581 | case CCISS_BIG_PASSTHRU32: | |
582 | return cciss_ioctl32_big_passthru(f, cmd, arg); | |
583 | ||
584 | default: | |
585 | return -ENOIOCTLCMD; | |
586 | } | |
587 | } | |
588 | ||
7c832835 BH |
589 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
590 | unsigned long arg) | |
1da177e4 LT |
591 | { |
592 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 593 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
594 | IOCTL_Command_struct arg64; |
595 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
596 | int err; | |
597 | u32 cp; | |
598 | ||
599 | err = 0; | |
7c832835 BH |
600 | err |= |
601 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
602 | sizeof(arg64.LUN_info)); | |
603 | err |= | |
604 | copy_from_user(&arg64.Request, &arg32->Request, | |
605 | sizeof(arg64.Request)); | |
606 | err |= | |
607 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
608 | sizeof(arg64.error_info)); | |
1da177e4 LT |
609 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
610 | err |= get_user(cp, &arg32->buf); | |
611 | arg64.buf = compat_ptr(cp); | |
612 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
613 | ||
614 | if (err) | |
615 | return -EFAULT; | |
616 | ||
7c832835 | 617 | err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
618 | if (err) |
619 | return err; | |
7c832835 BH |
620 | err |= |
621 | copy_in_user(&arg32->error_info, &p->error_info, | |
622 | sizeof(arg32->error_info)); | |
1da177e4 LT |
623 | if (err) |
624 | return -EFAULT; | |
625 | return err; | |
626 | } | |
627 | ||
7c832835 BH |
628 | static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, |
629 | unsigned long arg) | |
1da177e4 LT |
630 | { |
631 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 632 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 633 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
634 | BIG_IOCTL_Command_struct __user *p = |
635 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
636 | int err; |
637 | u32 cp; | |
638 | ||
639 | err = 0; | |
7c832835 BH |
640 | err |= |
641 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
642 | sizeof(arg64.LUN_info)); | |
643 | err |= | |
644 | copy_from_user(&arg64.Request, &arg32->Request, | |
645 | sizeof(arg64.Request)); | |
646 | err |= | |
647 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
648 | sizeof(arg64.error_info)); | |
1da177e4 LT |
649 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
650 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
651 | err |= get_user(cp, &arg32->buf); | |
652 | arg64.buf = compat_ptr(cp); | |
653 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
654 | ||
655 | if (err) | |
7c832835 | 656 | return -EFAULT; |
1da177e4 | 657 | |
7c832835 | 658 | err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
659 | if (err) |
660 | return err; | |
7c832835 BH |
661 | err |= |
662 | copy_in_user(&arg32->error_info, &p->error_info, | |
663 | sizeof(arg32->error_info)); | |
1da177e4 LT |
664 | if (err) |
665 | return -EFAULT; | |
666 | return err; | |
667 | } | |
668 | #endif | |
a885c8c4 CH |
669 | |
670 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
671 | { | |
672 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
673 | ||
674 | if (!drv->cylinders) | |
675 | return -ENXIO; | |
676 | ||
677 | geo->heads = drv->heads; | |
678 | geo->sectors = drv->sectors; | |
679 | geo->cylinders = drv->cylinders; | |
680 | return 0; | |
681 | } | |
682 | ||
1da177e4 | 683 | /* |
7c832835 | 684 | * ioctl |
1da177e4 | 685 | */ |
7c832835 BH |
686 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
687 | unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
688 | { |
689 | struct block_device *bdev = inode->i_bdev; | |
690 | struct gendisk *disk = bdev->bd_disk; | |
691 | ctlr_info_t *host = get_host(disk); | |
692 | drive_info_struct *drv = get_drv(disk); | |
693 | int ctlr = host->ctlr; | |
694 | void __user *argp = (void __user *)arg; | |
695 | ||
696 | #ifdef CCISS_DEBUG | |
697 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
698 | #endif /* CCISS_DEBUG */ |
699 | ||
700 | switch (cmd) { | |
1da177e4 | 701 | case CCISS_GETPCIINFO: |
7c832835 BH |
702 | { |
703 | cciss_pci_info_struct pciinfo; | |
704 | ||
705 | if (!arg) | |
706 | return -EINVAL; | |
707 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
708 | pciinfo.bus = host->pdev->bus->number; | |
709 | pciinfo.dev_fn = host->pdev->devfn; | |
710 | pciinfo.board_id = host->board_id; | |
711 | if (copy_to_user | |
712 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
713 | return -EFAULT; | |
714 | return 0; | |
715 | } | |
1da177e4 | 716 | case CCISS_GETINTINFO: |
7c832835 BH |
717 | { |
718 | cciss_coalint_struct intinfo; | |
719 | if (!arg) | |
720 | return -EINVAL; | |
721 | intinfo.delay = | |
722 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
723 | intinfo.count = | |
724 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
725 | if (copy_to_user | |
726 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
727 | return -EFAULT; | |
728 | return 0; | |
729 | } | |
1da177e4 | 730 | case CCISS_SETINTINFO: |
1da177e4 | 731 | { |
7c832835 BH |
732 | cciss_coalint_struct intinfo; |
733 | unsigned long flags; | |
734 | int i; | |
735 | ||
736 | if (!arg) | |
737 | return -EINVAL; | |
738 | if (!capable(CAP_SYS_ADMIN)) | |
739 | return -EPERM; | |
740 | if (copy_from_user | |
741 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
742 | return -EFAULT; | |
743 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
744 | { | |
745 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
746 | return -EINVAL; | |
747 | } | |
748 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
749 | /* Update the field, and then ring the doorbell */ | |
750 | writel(intinfo.delay, | |
751 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
752 | writel(intinfo.count, | |
753 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
754 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
755 | ||
756 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
757 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
758 | & CFGTBL_ChangeReq)) | |
759 | break; | |
760 | /* delay and try again */ | |
761 | udelay(1000); | |
762 | } | |
763 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
764 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
765 | return -EAGAIN; | |
766 | return 0; | |
1da177e4 | 767 | } |
1da177e4 | 768 | case CCISS_GETNODENAME: |
7c832835 BH |
769 | { |
770 | NodeName_type NodeName; | |
771 | int i; | |
772 | ||
773 | if (!arg) | |
774 | return -EINVAL; | |
775 | for (i = 0; i < 16; i++) | |
776 | NodeName[i] = | |
777 | readb(&host->cfgtable->ServerName[i]); | |
778 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
779 | return -EFAULT; | |
780 | return 0; | |
781 | } | |
1da177e4 | 782 | case CCISS_SETNODENAME: |
7c832835 BH |
783 | { |
784 | NodeName_type NodeName; | |
785 | unsigned long flags; | |
786 | int i; | |
787 | ||
788 | if (!arg) | |
789 | return -EINVAL; | |
790 | if (!capable(CAP_SYS_ADMIN)) | |
791 | return -EPERM; | |
792 | ||
793 | if (copy_from_user | |
794 | (NodeName, argp, sizeof(NodeName_type))) | |
795 | return -EFAULT; | |
796 | ||
797 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
798 | ||
799 | /* Update the field, and then ring the doorbell */ | |
800 | for (i = 0; i < 16; i++) | |
801 | writeb(NodeName[i], | |
802 | &host->cfgtable->ServerName[i]); | |
803 | ||
804 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
805 | ||
806 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
807 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
808 | & CFGTBL_ChangeReq)) | |
809 | break; | |
810 | /* delay and try again */ | |
811 | udelay(1000); | |
812 | } | |
813 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
814 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
815 | return -EAGAIN; | |
816 | return 0; | |
817 | } | |
1da177e4 LT |
818 | |
819 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
820 | { |
821 | Heartbeat_type heartbeat; | |
822 | ||
823 | if (!arg) | |
824 | return -EINVAL; | |
825 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
826 | if (copy_to_user | |
827 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
828 | return -EFAULT; | |
829 | return 0; | |
830 | } | |
1da177e4 | 831 | case CCISS_GETBUSTYPES: |
7c832835 BH |
832 | { |
833 | BusTypes_type BusTypes; | |
834 | ||
835 | if (!arg) | |
836 | return -EINVAL; | |
837 | BusTypes = readl(&host->cfgtable->BusTypes); | |
838 | if (copy_to_user | |
839 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
840 | return -EFAULT; | |
841 | return 0; | |
842 | } | |
1da177e4 | 843 | case CCISS_GETFIRMVER: |
7c832835 BH |
844 | { |
845 | FirmwareVer_type firmware; | |
1da177e4 | 846 | |
7c832835 BH |
847 | if (!arg) |
848 | return -EINVAL; | |
849 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 850 | |
7c832835 BH |
851 | if (copy_to_user |
852 | (argp, firmware, sizeof(FirmwareVer_type))) | |
853 | return -EFAULT; | |
854 | return 0; | |
855 | } | |
856 | case CCISS_GETDRIVVER: | |
857 | { | |
858 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 859 | |
7c832835 BH |
860 | if (!arg) |
861 | return -EINVAL; | |
1da177e4 | 862 | |
7c832835 BH |
863 | if (copy_to_user |
864 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
865 | return -EFAULT; | |
866 | return 0; | |
867 | } | |
1da177e4 LT |
868 | |
869 | case CCISS_REVALIDVOLS: | |
870 | if (bdev != bdev->bd_contains || drv != host->drv) | |
871 | return -ENXIO; | |
7c832835 BH |
872 | return revalidate_allvol(host); |
873 | ||
874 | case CCISS_GETLUNINFO:{ | |
875 | LogvolInfo_struct luninfo; | |
876 | ||
877 | luninfo.LunID = drv->LunID; | |
878 | luninfo.num_opens = drv->usage_count; | |
879 | luninfo.num_parts = 0; | |
880 | if (copy_to_user(argp, &luninfo, | |
881 | sizeof(LogvolInfo_struct))) | |
882 | return -EFAULT; | |
883 | return 0; | |
884 | } | |
1da177e4 | 885 | case CCISS_DEREGDISK: |
ddd47442 | 886 | return rebuild_lun_table(host, disk); |
1da177e4 LT |
887 | |
888 | case CCISS_REGNEWD: | |
ddd47442 | 889 | return rebuild_lun_table(host, NULL); |
1da177e4 LT |
890 | |
891 | case CCISS_PASSTHRU: | |
1da177e4 | 892 | { |
7c832835 BH |
893 | IOCTL_Command_struct iocommand; |
894 | CommandList_struct *c; | |
895 | char *buff = NULL; | |
896 | u64bit temp64; | |
897 | unsigned long flags; | |
898 | DECLARE_COMPLETION(wait); | |
1da177e4 | 899 | |
7c832835 BH |
900 | if (!arg) |
901 | return -EINVAL; | |
1da177e4 | 902 | |
7c832835 BH |
903 | if (!capable(CAP_SYS_RAWIO)) |
904 | return -EPERM; | |
1da177e4 | 905 | |
7c832835 BH |
906 | if (copy_from_user |
907 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
908 | return -EFAULT; | |
909 | if ((iocommand.buf_size < 1) && | |
910 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
911 | return -EINVAL; | |
912 | } | |
913 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
914 | /* Check kmalloc limits */ | |
915 | if (iocommand.buf_size > 128000) | |
916 | return -EINVAL; | |
917 | #endif | |
918 | if (iocommand.buf_size > 0) { | |
919 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
920 | if (buff == NULL) | |
921 | return -EFAULT; | |
922 | } | |
923 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
924 | /* Copy the data into the buffer we created */ | |
925 | if (copy_from_user | |
926 | (buff, iocommand.buf, iocommand.buf_size)) { | |
927 | kfree(buff); | |
928 | return -EFAULT; | |
929 | } | |
930 | } else { | |
931 | memset(buff, 0, iocommand.buf_size); | |
932 | } | |
933 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
934 | kfree(buff); | |
935 | return -ENOMEM; | |
936 | } | |
937 | // Fill in the command type | |
938 | c->cmd_type = CMD_IOCTL_PEND; | |
939 | // Fill in Command Header | |
940 | c->Header.ReplyQueue = 0; // unused in simple mode | |
941 | if (iocommand.buf_size > 0) // buffer to fill | |
942 | { | |
943 | c->Header.SGList = 1; | |
944 | c->Header.SGTotal = 1; | |
945 | } else // no buffers to fill | |
946 | { | |
947 | c->Header.SGList = 0; | |
948 | c->Header.SGTotal = 0; | |
949 | } | |
950 | c->Header.LUN = iocommand.LUN_info; | |
951 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag | |
1da177e4 | 952 | |
7c832835 BH |
953 | // Fill in Request block |
954 | c->Request = iocommand.Request; | |
1da177e4 | 955 | |
7c832835 BH |
956 | // Fill in the scatter gather information |
957 | if (iocommand.buf_size > 0) { | |
958 | temp64.val = pci_map_single(host->pdev, buff, | |
959 | iocommand.buf_size, | |
960 | PCI_DMA_BIDIRECTIONAL); | |
961 | c->SG[0].Addr.lower = temp64.val32.lower; | |
962 | c->SG[0].Addr.upper = temp64.val32.upper; | |
963 | c->SG[0].Len = iocommand.buf_size; | |
964 | c->SG[0].Ext = 0; // we are not chaining | |
965 | } | |
966 | c->waiting = &wait; | |
967 | ||
968 | /* Put the request on the tail of the request queue */ | |
969 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
970 | addQ(&host->reqQ, c); | |
971 | host->Qdepth++; | |
972 | start_io(host); | |
973 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
974 | ||
975 | wait_for_completion(&wait); | |
976 | ||
977 | /* unlock the buffers from DMA */ | |
978 | temp64.val32.lower = c->SG[0].Addr.lower; | |
979 | temp64.val32.upper = c->SG[0].Addr.upper; | |
980 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
981 | iocommand.buf_size, | |
982 | PCI_DMA_BIDIRECTIONAL); | |
983 | ||
984 | /* Copy the error information out */ | |
985 | iocommand.error_info = *(c->err_info); | |
986 | if (copy_to_user | |
987 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
988 | kfree(buff); | |
1da177e4 LT |
989 | cmd_free(host, c, 0); |
990 | return -EFAULT; | |
991 | } | |
7c832835 BH |
992 | |
993 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
994 | /* Copy the data out of the buffer we created */ | |
995 | if (copy_to_user | |
996 | (iocommand.buf, buff, iocommand.buf_size)) { | |
997 | kfree(buff); | |
998 | cmd_free(host, c, 0); | |
999 | return -EFAULT; | |
1000 | } | |
1001 | } | |
1002 | kfree(buff); | |
1003 | cmd_free(host, c, 0); | |
1004 | return 0; | |
1da177e4 | 1005 | } |
7c832835 BH |
1006 | case CCISS_BIG_PASSTHRU:{ |
1007 | BIG_IOCTL_Command_struct *ioc; | |
1008 | CommandList_struct *c; | |
1009 | unsigned char **buff = NULL; | |
1010 | int *buff_size = NULL; | |
1011 | u64bit temp64; | |
1012 | unsigned long flags; | |
1013 | BYTE sg_used = 0; | |
1014 | int status = 0; | |
1015 | int i; | |
1016 | DECLARE_COMPLETION(wait); | |
1017 | __u32 left; | |
1018 | __u32 sz; | |
1019 | BYTE __user *data_ptr; | |
1020 | ||
1021 | if (!arg) | |
1022 | return -EINVAL; | |
1023 | if (!capable(CAP_SYS_RAWIO)) | |
1024 | return -EPERM; | |
1025 | ioc = (BIG_IOCTL_Command_struct *) | |
1026 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1027 | if (!ioc) { | |
1028 | status = -ENOMEM; | |
1029 | goto cleanup1; | |
1030 | } | |
1031 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1032 | status = -EFAULT; | |
1033 | goto cleanup1; | |
1034 | } | |
1035 | if ((ioc->buf_size < 1) && | |
1036 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1037 | status = -EINVAL; |
1038 | goto cleanup1; | |
7c832835 BH |
1039 | } |
1040 | /* Check kmalloc limits using all SGs */ | |
1041 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1042 | status = -EINVAL; | |
1043 | goto cleanup1; | |
1044 | } | |
1045 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1046 | status = -EINVAL; | |
1047 | goto cleanup1; | |
1048 | } | |
1049 | buff = | |
1050 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1051 | if (!buff) { | |
1da177e4 LT |
1052 | status = -ENOMEM; |
1053 | goto cleanup1; | |
1054 | } | |
7c832835 BH |
1055 | buff_size = (int *)kmalloc(MAXSGENTRIES * sizeof(int), |
1056 | GFP_KERNEL); | |
1057 | if (!buff_size) { | |
1058 | status = -ENOMEM; | |
1059 | goto cleanup1; | |
1060 | } | |
1061 | left = ioc->buf_size; | |
1062 | data_ptr = ioc->buf; | |
1063 | while (left) { | |
1064 | sz = (left > | |
1065 | ioc->malloc_size) ? ioc-> | |
1066 | malloc_size : left; | |
1067 | buff_size[sg_used] = sz; | |
1068 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1069 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1070 | status = -ENOMEM; |
15534d38 JA |
1071 | goto cleanup1; |
1072 | } | |
7c832835 BH |
1073 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1074 | if (copy_from_user | |
1075 | (buff[sg_used], data_ptr, sz)) { | |
1076 | status = -ENOMEM; | |
1077 | goto cleanup1; | |
1078 | } | |
1079 | } else { | |
1080 | memset(buff[sg_used], 0, sz); | |
1081 | } | |
1082 | left -= sz; | |
1083 | data_ptr += sz; | |
1084 | sg_used++; | |
1085 | } | |
1086 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1087 | status = -ENOMEM; | |
1088 | goto cleanup1; | |
1089 | } | |
1090 | c->cmd_type = CMD_IOCTL_PEND; | |
1091 | c->Header.ReplyQueue = 0; | |
1092 | ||
1093 | if (ioc->buf_size > 0) { | |
1094 | c->Header.SGList = sg_used; | |
1095 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1096 | } else { |
7c832835 BH |
1097 | c->Header.SGList = 0; |
1098 | c->Header.SGTotal = 0; | |
1da177e4 | 1099 | } |
7c832835 BH |
1100 | c->Header.LUN = ioc->LUN_info; |
1101 | c->Header.Tag.lower = c->busaddr; | |
1102 | ||
1103 | c->Request = ioc->Request; | |
1104 | if (ioc->buf_size > 0) { | |
1105 | int i; | |
1106 | for (i = 0; i < sg_used; i++) { | |
1107 | temp64.val = | |
1108 | pci_map_single(host->pdev, buff[i], | |
1109 | buff_size[i], | |
1110 | PCI_DMA_BIDIRECTIONAL); | |
1111 | c->SG[i].Addr.lower = | |
1112 | temp64.val32.lower; | |
1113 | c->SG[i].Addr.upper = | |
1114 | temp64.val32.upper; | |
1115 | c->SG[i].Len = buff_size[i]; | |
1116 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1117 | } | |
1118 | } | |
1119 | c->waiting = &wait; | |
1120 | /* Put the request on the tail of the request queue */ | |
1121 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1122 | addQ(&host->reqQ, c); | |
1123 | host->Qdepth++; | |
1124 | start_io(host); | |
1125 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1126 | wait_for_completion(&wait); | |
1127 | /* unlock the buffers from DMA */ | |
1128 | for (i = 0; i < sg_used; i++) { | |
1129 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1130 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1131 | pci_unmap_single(host->pdev, | |
1132 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1133 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1134 | } |
7c832835 BH |
1135 | /* Copy the error information out */ |
1136 | ioc->error_info = *(c->err_info); | |
1137 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1138 | cmd_free(host, c, 0); | |
1139 | status = -EFAULT; | |
1140 | goto cleanup1; | |
1141 | } | |
1142 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1143 | /* Copy the data out of the buffer we created */ | |
1144 | BYTE __user *ptr = ioc->buf; | |
1145 | for (i = 0; i < sg_used; i++) { | |
1146 | if (copy_to_user | |
1147 | (ptr, buff[i], buff_size[i])) { | |
1148 | cmd_free(host, c, 0); | |
1149 | status = -EFAULT; | |
1150 | goto cleanup1; | |
1151 | } | |
1152 | ptr += buff_size[i]; | |
1da177e4 | 1153 | } |
1da177e4 | 1154 | } |
7c832835 BH |
1155 | cmd_free(host, c, 0); |
1156 | status = 0; | |
1157 | cleanup1: | |
1158 | if (buff) { | |
1159 | for (i = 0; i < sg_used; i++) | |
1160 | kfree(buff[i]); | |
1161 | kfree(buff); | |
1162 | } | |
1163 | kfree(buff_size); | |
1164 | kfree(ioc); | |
1165 | return status; | |
1da177e4 | 1166 | } |
1da177e4 LT |
1167 | default: |
1168 | return -ENOTTY; | |
1169 | } | |
1da177e4 LT |
1170 | } |
1171 | ||
1172 | /* | |
1173 | * revalidate_allvol is for online array config utilities. After a | |
1174 | * utility reconfigures the drives in the array, it can use this function | |
1175 | * (through an ioctl) to make the driver zap any previous disk structs for | |
1176 | * that controller and get new ones. | |
1177 | * | |
1178 | * Right now I'm using the getgeometry() function to do this, but this | |
1179 | * function should probably be finer grained and allow you to revalidate one | |
d14c4ab5 | 1180 | * particular logical volume (instead of all of them on a particular |
1da177e4 LT |
1181 | * controller). |
1182 | */ | |
1183 | static int revalidate_allvol(ctlr_info_t *host) | |
1184 | { | |
1185 | int ctlr = host->ctlr, i; | |
1186 | unsigned long flags; | |
1187 | ||
7c832835 BH |
1188 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
1189 | if (host->usage_count > 1) { | |
1190 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1191 | printk(KERN_WARNING "cciss: Device busy for volume" | |
1192 | " revalidation (usage=%d)\n", host->usage_count); | |
1193 | return -EBUSY; | |
1194 | } | |
1195 | host->usage_count++; | |
1da177e4 LT |
1196 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
1197 | ||
7c832835 | 1198 | for (i = 0; i < NWD; i++) { |
1da177e4 | 1199 | struct gendisk *disk = host->gendisk[i]; |
6f5a0f7c | 1200 | if (disk) { |
1201 | request_queue_t *q = disk->queue; | |
1202 | ||
1203 | if (disk->flags & GENHD_FL_UP) | |
1204 | del_gendisk(disk); | |
1205 | if (q) | |
1206 | blk_cleanup_queue(q); | |
6f5a0f7c | 1207 | } |
1da177e4 LT |
1208 | } |
1209 | ||
7c832835 BH |
1210 | /* |
1211 | * Set the partition and block size structures for all volumes | |
1212 | * on this controller to zero. We will reread all of this data | |
1213 | */ | |
1214 | memset(host->drv, 0, sizeof(drive_info_struct) | |
1215 | * CISS_MAX_LUN); | |
1216 | /* | |
1217 | * Tell the array controller not to give us any interrupts while | |
1218 | * we check the new geometry. Then turn interrupts back on when | |
1219 | * we're done. | |
1220 | */ | |
1221 | host->access.set_intr_mask(host, CCISS_INTR_OFF); | |
1222 | cciss_getgeometry(ctlr); | |
1223 | host->access.set_intr_mask(host, CCISS_INTR_ON); | |
1224 | ||
1225 | /* Loop through each real device */ | |
1da177e4 LT |
1226 | for (i = 0; i < NWD; i++) { |
1227 | struct gendisk *disk = host->gendisk[i]; | |
1228 | drive_info_struct *drv = &(host->drv[i]); | |
1229 | /* we must register the controller even if no disks exist */ | |
1230 | /* this is for the online array utilities */ | |
1231 | if (!drv->heads && i) | |
1232 | continue; | |
ad2b9312 | 1233 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
1da177e4 LT |
1234 | set_capacity(disk, drv->nr_blocks); |
1235 | add_disk(disk); | |
1236 | } | |
7c832835 BH |
1237 | host->usage_count--; |
1238 | return 0; | |
1da177e4 LT |
1239 | } |
1240 | ||
ca1e0484 MM |
1241 | static inline void complete_buffers(struct bio *bio, int status) |
1242 | { | |
1243 | while (bio) { | |
1244 | struct bio *xbh = bio->bi_next; | |
1245 | int nr_sectors = bio_sectors(bio); | |
1246 | ||
1247 | bio->bi_next = NULL; | |
1248 | blk_finished_io(len); | |
1249 | bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO); | |
1250 | bio = xbh; | |
1251 | } | |
ca1e0484 MM |
1252 | } |
1253 | ||
1254 | static void cciss_softirq_done(struct request *rq) | |
1255 | { | |
1256 | CommandList_struct *cmd = rq->completion_data; | |
1257 | ctlr_info_t *h = hba[cmd->ctlr]; | |
1258 | unsigned long flags; | |
1259 | u64bit temp64; | |
1260 | int i, ddir; | |
1261 | ||
1262 | if (cmd->Request.Type.Direction == XFER_READ) | |
1263 | ddir = PCI_DMA_FROMDEVICE; | |
1264 | else | |
1265 | ddir = PCI_DMA_TODEVICE; | |
1266 | ||
1267 | /* command did not need to be retried */ | |
1268 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1269 | for (i = 0; i < cmd->Header.SGList; i++) { |
ca1e0484 MM |
1270 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
1271 | temp64.val32.upper = cmd->SG[i].Addr.upper; | |
1272 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); | |
1273 | } | |
1274 | ||
1275 | complete_buffers(rq->bio, rq->errors); | |
1276 | ||
1277 | #ifdef CCISS_DEBUG | |
1278 | printk("Done with %p\n", rq); | |
7c832835 | 1279 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1280 | |
8bd0b97e | 1281 | add_disk_randomness(rq->rq_disk); |
ca1e0484 MM |
1282 | spin_lock_irqsave(&h->lock, flags); |
1283 | end_that_request_last(rq, rq->errors); | |
7c832835 | 1284 | cmd_free(h, cmd, 1); |
ca1e0484 MM |
1285 | spin_unlock_irqrestore(&h->lock, flags); |
1286 | } | |
1287 | ||
ddd47442 MM |
1288 | /* This function will check the usage_count of the drive to be updated/added. |
1289 | * If the usage_count is zero then the drive information will be updated and | |
1290 | * the disk will be re-registered with the kernel. If not then it will be | |
1291 | * left alone for the next reboot. The exception to this is disk 0 which | |
1292 | * will always be left registered with the kernel since it is also the | |
1293 | * controller node. Any changes to disk 0 will show up on the next | |
1294 | * reboot. | |
7c832835 | 1295 | */ |
ddd47442 | 1296 | static void cciss_update_drive_info(int ctlr, int drv_index) |
7c832835 | 1297 | { |
ddd47442 MM |
1298 | ctlr_info_t *h = hba[ctlr]; |
1299 | struct gendisk *disk; | |
1300 | ReadCapdata_struct *size_buff = NULL; | |
1301 | InquiryData_struct *inq_buff = NULL; | |
1302 | unsigned int block_size; | |
1303 | unsigned int total_size; | |
1304 | unsigned long flags = 0; | |
1305 | int ret = 0; | |
1306 | ||
7c832835 BH |
1307 | /* if the disk already exists then deregister it before proceeding */ |
1308 | if (h->drv[drv_index].raid_level != -1) { | |
ddd47442 MM |
1309 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
1310 | h->drv[drv_index].busy_configuring = 1; | |
1311 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1312 | ret = deregister_disk(h->gendisk[drv_index], | |
7c832835 | 1313 | &h->drv[drv_index], 0); |
ddd47442 MM |
1314 | h->drv[drv_index].busy_configuring = 0; |
1315 | } | |
1316 | ||
1317 | /* If the disk is in use return */ | |
1318 | if (ret) | |
1319 | return; | |
1320 | ||
d14c4ab5 | 1321 | /* Get information about the disk and modify the driver structure */ |
7c832835 BH |
1322 | size_buff = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); |
1323 | if (size_buff == NULL) | |
ddd47442 | 1324 | goto mem_msg; |
7c832835 | 1325 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
ddd47442 MM |
1326 | if (inq_buff == NULL) |
1327 | goto mem_msg; | |
1328 | ||
1329 | cciss_read_capacity(ctlr, drv_index, size_buff, 1, | |
7c832835 | 1330 | &total_size, &block_size); |
ddd47442 | 1331 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, |
7c832835 | 1332 | inq_buff, &h->drv[drv_index]); |
ddd47442 MM |
1333 | |
1334 | ++h->num_luns; | |
1335 | disk = h->gendisk[drv_index]; | |
1336 | set_capacity(disk, h->drv[drv_index].nr_blocks); | |
1337 | ||
ddd47442 | 1338 | /* if it's the controller it's already added */ |
7c832835 | 1339 | if (drv_index) { |
ddd47442 MM |
1340 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
1341 | ||
1342 | /* Set up queue information */ | |
1343 | disk->queue->backing_dev_info.ra_pages = READ_AHEAD; | |
1344 | blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask); | |
1345 | ||
1346 | /* This is a hardware imposed limit. */ | |
1347 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); | |
1348 | ||
1349 | /* This is a limit in the driver and could be eliminated. */ | |
1350 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); | |
1351 | ||
1352 | blk_queue_max_sectors(disk->queue, 512); | |
1353 | ||
ca1e0484 MM |
1354 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
1355 | ||
ddd47442 MM |
1356 | disk->queue->queuedata = hba[ctlr]; |
1357 | ||
1358 | blk_queue_hardsect_size(disk->queue, | |
7c832835 | 1359 | hba[ctlr]->drv[drv_index].block_size); |
ddd47442 MM |
1360 | |
1361 | h->drv[drv_index].queue = disk->queue; | |
1362 | add_disk(disk); | |
1363 | } | |
1364 | ||
7c832835 | 1365 | freeret: |
ddd47442 MM |
1366 | kfree(size_buff); |
1367 | kfree(inq_buff); | |
1368 | return; | |
7c832835 | 1369 | mem_msg: |
ddd47442 MM |
1370 | printk(KERN_ERR "cciss: out of memory\n"); |
1371 | goto freeret; | |
1372 | } | |
1373 | ||
1374 | /* This function will find the first index of the controllers drive array | |
1375 | * that has a -1 for the raid_level and will return that index. This is | |
1376 | * where new drives will be added. If the index to be returned is greater | |
1377 | * than the highest_lun index for the controller then highest_lun is set | |
1378 | * to this new index. If there are no available indexes then -1 is returned. | |
7c832835 | 1379 | */ |
ddd47442 MM |
1380 | static int cciss_find_free_drive_index(int ctlr) |
1381 | { | |
1382 | int i; | |
1383 | ||
7c832835 BH |
1384 | for (i = 0; i < CISS_MAX_LUN; i++) { |
1385 | if (hba[ctlr]->drv[i].raid_level == -1) { | |
ddd47442 MM |
1386 | if (i > hba[ctlr]->highest_lun) |
1387 | hba[ctlr]->highest_lun = i; | |
1388 | return i; | |
1389 | } | |
1390 | } | |
1391 | return -1; | |
1392 | } | |
1393 | ||
1394 | /* This function will add and remove logical drives from the Logical | |
d14c4ab5 | 1395 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
1396 | * so that mount points are preserved until the next reboot. This allows |
1397 | * for the removal of logical drives in the middle of the drive array | |
1398 | * without a re-ordering of those drives. | |
1399 | * INPUT | |
1400 | * h = The controller to perform the operations on | |
1401 | * del_disk = The disk to remove if specified. If the value given | |
1402 | * is NULL then no disk is removed. | |
7c832835 | 1403 | */ |
ddd47442 | 1404 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk) |
1da177e4 | 1405 | { |
ddd47442 MM |
1406 | int ctlr = h->ctlr; |
1407 | int num_luns; | |
1408 | ReportLunData_struct *ld_buff = NULL; | |
1409 | drive_info_struct *drv = NULL; | |
1410 | int return_code; | |
1411 | int listlength = 0; | |
1412 | int i; | |
1413 | int drv_found; | |
1414 | int drv_index = 0; | |
1415 | __u32 lunid = 0; | |
1da177e4 | 1416 | unsigned long flags; |
ddd47442 MM |
1417 | |
1418 | /* Set busy_configuring flag for this operation */ | |
1419 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 1420 | if (h->num_luns >= CISS_MAX_LUN) { |
ddd47442 MM |
1421 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
1422 | return -EINVAL; | |
1423 | } | |
1424 | ||
7c832835 | 1425 | if (h->busy_configuring) { |
ddd47442 MM |
1426 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
1427 | return -EBUSY; | |
1428 | } | |
1429 | h->busy_configuring = 1; | |
1430 | ||
1431 | /* if del_disk is NULL then we are being called to add a new disk | |
1432 | * and update the logical drive table. If it is not NULL then | |
1433 | * we will check if the disk is in use or not. | |
1434 | */ | |
7c832835 | 1435 | if (del_disk != NULL) { |
ddd47442 MM |
1436 | drv = get_drv(del_disk); |
1437 | drv->busy_configuring = 1; | |
1438 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1439 | return_code = deregister_disk(del_disk, drv, 1); | |
1440 | drv->busy_configuring = 0; | |
1441 | h->busy_configuring = 0; | |
1442 | return return_code; | |
1443 | } else { | |
1444 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1445 | if (!capable(CAP_SYS_RAWIO)) | |
1446 | return -EPERM; | |
1447 | ||
1448 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); | |
1449 | if (ld_buff == NULL) | |
1450 | goto mem_msg; | |
1451 | ||
1452 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
7c832835 BH |
1453 | sizeof(ReportLunData_struct), 0, |
1454 | 0, 0, TYPE_CMD); | |
1455 | ||
1456 | if (return_code == IO_OK) { | |
1457 | listlength |= | |
1458 | (0xff & (unsigned int)(ld_buff->LUNListLength[0])) | |
1459 | << 24; | |
1460 | listlength |= | |
1461 | (0xff & (unsigned int)(ld_buff->LUNListLength[1])) | |
1462 | << 16; | |
1463 | listlength |= | |
1464 | (0xff & (unsigned int)(ld_buff->LUNListLength[2])) | |
1465 | << 8; | |
1466 | listlength |= | |
1467 | 0xff & (unsigned int)(ld_buff->LUNListLength[3]); | |
1468 | } else { /* reading number of logical volumes failed */ | |
ddd47442 | 1469 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 1470 | " command failed\n"); |
ddd47442 MM |
1471 | listlength = 0; |
1472 | goto freeret; | |
1473 | } | |
1474 | ||
1475 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
7c832835 | 1476 | if (num_luns > CISS_MAX_LUN) { |
ddd47442 MM |
1477 | num_luns = CISS_MAX_LUN; |
1478 | printk(KERN_WARNING "cciss: more luns configured" | |
7c832835 BH |
1479 | " on controller than can be handled by" |
1480 | " this driver.\n"); | |
ddd47442 MM |
1481 | } |
1482 | ||
1483 | /* Compare controller drive array to drivers drive array. | |
7c832835 BH |
1484 | * Check for updates in the drive information and any new drives |
1485 | * on the controller. | |
1486 | */ | |
1487 | for (i = 0; i < num_luns; i++) { | |
ddd47442 MM |
1488 | int j; |
1489 | ||
1490 | drv_found = 0; | |
1491 | ||
7c832835 BH |
1492 | lunid = (0xff & |
1493 | (unsigned int)(ld_buff->LUN[i][3])) << 24; | |
1494 | lunid |= (0xff & | |
1495 | (unsigned int)(ld_buff->LUN[i][2])) << 16; | |
1496 | lunid |= (0xff & | |
1497 | (unsigned int)(ld_buff->LUN[i][1])) << 8; | |
1498 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
ddd47442 MM |
1499 | |
1500 | /* Find if the LUN is already in the drive array | |
1501 | * of the controller. If so then update its info | |
1502 | * if not is use. If it does not exist then find | |
1503 | * the first free index and add it. | |
7c832835 BH |
1504 | */ |
1505 | for (j = 0; j <= h->highest_lun; j++) { | |
1506 | if (h->drv[j].LunID == lunid) { | |
ddd47442 MM |
1507 | drv_index = j; |
1508 | drv_found = 1; | |
1509 | } | |
1510 | } | |
1511 | ||
1512 | /* check if the drive was found already in the array */ | |
7c832835 | 1513 | if (!drv_found) { |
ddd47442 MM |
1514 | drv_index = cciss_find_free_drive_index(ctlr); |
1515 | if (drv_index == -1) | |
1516 | goto freeret; | |
1517 | ||
1518 | } | |
1519 | h->drv[drv_index].LunID = lunid; | |
1520 | cciss_update_drive_info(ctlr, drv_index); | |
7c832835 BH |
1521 | } /* end for */ |
1522 | } /* end else */ | |
ddd47442 | 1523 | |
7c832835 | 1524 | freeret: |
ddd47442 MM |
1525 | kfree(ld_buff); |
1526 | h->busy_configuring = 0; | |
1527 | /* We return -1 here to tell the ACU that we have registered/updated | |
1528 | * all of the drives that we can and to keep it from calling us | |
1529 | * additional times. | |
7c832835 | 1530 | */ |
ddd47442 | 1531 | return -1; |
7c832835 | 1532 | mem_msg: |
ddd47442 MM |
1533 | printk(KERN_ERR "cciss: out of memory\n"); |
1534 | goto freeret; | |
1535 | } | |
1536 | ||
1537 | /* This function will deregister the disk and it's queue from the | |
1538 | * kernel. It must be called with the controller lock held and the | |
1539 | * drv structures busy_configuring flag set. It's parameters are: | |
1540 | * | |
1541 | * disk = This is the disk to be deregistered | |
1542 | * drv = This is the drive_info_struct associated with the disk to be | |
1543 | * deregistered. It contains information about the disk used | |
1544 | * by the driver. | |
1545 | * clear_all = This flag determines whether or not the disk information | |
1546 | * is going to be completely cleared out and the highest_lun | |
1547 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 1548 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
1549 | * the highest_lun should be left unchanged and the LunID |
1550 | * should not be cleared. | |
1551 | */ | |
1552 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, | |
1553 | int clear_all) | |
1554 | { | |
1da177e4 | 1555 | ctlr_info_t *h = get_host(disk); |
1da177e4 LT |
1556 | |
1557 | if (!capable(CAP_SYS_RAWIO)) | |
1558 | return -EPERM; | |
1559 | ||
1da177e4 | 1560 | /* make sure logical volume is NOT is use */ |
7c832835 BH |
1561 | if (clear_all || (h->gendisk[0] == disk)) { |
1562 | if (drv->usage_count > 1) | |
1563 | return -EBUSY; | |
1564 | } else if (drv->usage_count > 0) | |
1565 | return -EBUSY; | |
1da177e4 | 1566 | |
ddd47442 MM |
1567 | /* invalidate the devices and deregister the disk. If it is disk |
1568 | * zero do not deregister it but just zero out it's values. This | |
1569 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
1570 | */ |
1571 | if (h->gendisk[0] != disk) { | |
6f5a0f7c | 1572 | if (disk) { |
1573 | request_queue_t *q = disk->queue; | |
1574 | if (disk->flags & GENHD_FL_UP) | |
1575 | del_gendisk(disk); | |
2f6331fa | 1576 | if (q) { |
6f5a0f7c | 1577 | blk_cleanup_queue(q); |
2f6331fa MM |
1578 | drv->queue = NULL; |
1579 | } | |
ddd47442 MM |
1580 | } |
1581 | } | |
1582 | ||
1583 | --h->num_luns; | |
1584 | /* zero out the disk size info */ | |
1585 | drv->nr_blocks = 0; | |
1586 | drv->block_size = 0; | |
1587 | drv->heads = 0; | |
1588 | drv->sectors = 0; | |
1589 | drv->cylinders = 0; | |
1590 | drv->raid_level = -1; /* This can be used as a flag variable to | |
1591 | * indicate that this element of the drive | |
1592 | * array is free. | |
7c832835 BH |
1593 | */ |
1594 | ||
1595 | if (clear_all) { | |
1596 | /* check to see if it was the last disk */ | |
1597 | if (drv == h->drv + h->highest_lun) { | |
1598 | /* if so, find the new hightest lun */ | |
1599 | int i, newhighest = -1; | |
1600 | for (i = 0; i < h->highest_lun; i++) { | |
1601 | /* if the disk has size > 0, it is available */ | |
ddd47442 | 1602 | if (h->drv[i].heads) |
7c832835 BH |
1603 | newhighest = i; |
1604 | } | |
1605 | h->highest_lun = newhighest; | |
1da177e4 | 1606 | } |
ddd47442 | 1607 | |
7c832835 | 1608 | drv->LunID = 0; |
ddd47442 | 1609 | } |
e2019b58 | 1610 | return 0; |
1da177e4 | 1611 | } |
ddd47442 | 1612 | |
7c832835 BH |
1613 | 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, |
1614 | 1: address logical volume log_unit, | |
1615 | 2: periph device address is scsi3addr */ | |
1616 | unsigned int log_unit, __u8 page_code, | |
1617 | unsigned char *scsi3addr, int cmd_type) | |
1da177e4 | 1618 | { |
7c832835 | 1619 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
1620 | u64bit buff_dma_handle; |
1621 | int status = IO_OK; | |
1622 | ||
1623 | c->cmd_type = CMD_IOCTL_PEND; | |
1624 | c->Header.ReplyQueue = 0; | |
7c832835 | 1625 | if (buff != NULL) { |
1da177e4 | 1626 | c->Header.SGList = 1; |
7c832835 | 1627 | c->Header.SGTotal = 1; |
1da177e4 LT |
1628 | } else { |
1629 | c->Header.SGList = 0; | |
7c832835 | 1630 | c->Header.SGTotal = 0; |
1da177e4 LT |
1631 | } |
1632 | c->Header.Tag.lower = c->busaddr; | |
1633 | ||
1634 | c->Request.Type.Type = cmd_type; | |
1635 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
1636 | switch (cmd) { |
1637 | case CISS_INQUIRY: | |
1da177e4 | 1638 | /* If the logical unit number is 0 then, this is going |
7c832835 BH |
1639 | to controller so It's a physical command |
1640 | mode = 0 target = 0. So we have nothing to write. | |
1641 | otherwise, if use_unit_num == 1, | |
1642 | mode = 1(volume set addressing) target = LUNID | |
1643 | otherwise, if use_unit_num == 2, | |
1644 | mode = 0(periph dev addr) target = scsi3addr */ | |
1da177e4 | 1645 | if (use_unit_num == 1) { |
7c832835 BH |
1646 | c->Header.LUN.LogDev.VolId = |
1647 | h->drv[log_unit].LunID; | |
1648 | c->Header.LUN.LogDev.Mode = 1; | |
1da177e4 | 1649 | } else if (use_unit_num == 2) { |
7c832835 BH |
1650 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, |
1651 | 8); | |
1da177e4 LT |
1652 | c->Header.LUN.LogDev.Mode = 0; |
1653 | } | |
1654 | /* are we trying to read a vital product page */ | |
7c832835 | 1655 | if (page_code != 0) { |
1da177e4 LT |
1656 | c->Request.CDB[1] = 0x01; |
1657 | c->Request.CDB[2] = page_code; | |
1658 | } | |
1659 | c->Request.CDBLen = 6; | |
7c832835 | 1660 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
1661 | c->Request.Type.Direction = XFER_READ; |
1662 | c->Request.Timeout = 0; | |
7c832835 BH |
1663 | c->Request.CDB[0] = CISS_INQUIRY; |
1664 | c->Request.CDB[4] = size & 0xFF; | |
1665 | break; | |
1da177e4 LT |
1666 | case CISS_REPORT_LOG: |
1667 | case CISS_REPORT_PHYS: | |
7c832835 | 1668 | /* Talking to controller so It's a physical command |
1da177e4 | 1669 | mode = 00 target = 0. Nothing to write. |
7c832835 | 1670 | */ |
1da177e4 LT |
1671 | c->Request.CDBLen = 12; |
1672 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1673 | c->Request.Type.Direction = XFER_READ; | |
1674 | c->Request.Timeout = 0; | |
1675 | c->Request.CDB[0] = cmd; | |
7c832835 | 1676 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
1da177e4 LT |
1677 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
1678 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
1679 | c->Request.CDB[9] = size & 0xFF; | |
1680 | break; | |
1681 | ||
1682 | case CCISS_READ_CAPACITY: | |
1683 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1684 | c->Header.LUN.LogDev.Mode = 1; | |
1685 | c->Request.CDBLen = 10; | |
1686 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1687 | c->Request.Type.Direction = XFER_READ; | |
1688 | c->Request.Timeout = 0; | |
1689 | c->Request.CDB[0] = cmd; | |
7c832835 | 1690 | break; |
1da177e4 LT |
1691 | case CCISS_CACHE_FLUSH: |
1692 | c->Request.CDBLen = 12; | |
1693 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1694 | c->Request.Type.Direction = XFER_WRITE; | |
1695 | c->Request.Timeout = 0; | |
1696 | c->Request.CDB[0] = BMIC_WRITE; | |
1697 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 1698 | break; |
1da177e4 LT |
1699 | default: |
1700 | printk(KERN_WARNING | |
7c832835 | 1701 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 1702 | return IO_ERROR; |
1da177e4 LT |
1703 | } |
1704 | } else if (cmd_type == TYPE_MSG) { | |
1705 | switch (cmd) { | |
7c832835 | 1706 | case 0: /* ABORT message */ |
3da8b713 | 1707 | c->Request.CDBLen = 12; |
1708 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1709 | c->Request.Type.Direction = XFER_WRITE; | |
1710 | c->Request.Timeout = 0; | |
7c832835 BH |
1711 | c->Request.CDB[0] = cmd; /* abort */ |
1712 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 1713 | /* buff contains the tag of the command to abort */ |
1714 | memcpy(&c->Request.CDB[4], buff, 8); | |
1715 | break; | |
7c832835 | 1716 | case 1: /* RESET message */ |
3da8b713 | 1717 | c->Request.CDBLen = 12; |
1718 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1719 | c->Request.Type.Direction = XFER_WRITE; | |
1720 | c->Request.Timeout = 0; | |
1721 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 BH |
1722 | c->Request.CDB[0] = cmd; /* reset */ |
1723 | c->Request.CDB[1] = 0x04; /* reset a LUN */ | |
1da177e4 LT |
1724 | case 3: /* No-Op message */ |
1725 | c->Request.CDBLen = 1; | |
1726 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1727 | c->Request.Type.Direction = XFER_WRITE; | |
1728 | c->Request.Timeout = 0; | |
1729 | c->Request.CDB[0] = cmd; | |
1730 | break; | |
1731 | default: | |
1732 | printk(KERN_WARNING | |
7c832835 | 1733 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
1734 | return IO_ERROR; |
1735 | } | |
1736 | } else { | |
1737 | printk(KERN_WARNING | |
7c832835 | 1738 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
1739 | return IO_ERROR; |
1740 | } | |
1741 | /* Fill in the scatter gather information */ | |
1742 | if (size > 0) { | |
1743 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
1744 | buff, size, |
1745 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
1746 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
1747 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
1748 | c->SG[0].Len = size; | |
7c832835 | 1749 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
1750 | } |
1751 | return status; | |
1752 | } | |
7c832835 BH |
1753 | |
1754 | static int sendcmd_withirq(__u8 cmd, | |
1755 | int ctlr, | |
1756 | void *buff, | |
1757 | size_t size, | |
1758 | unsigned int use_unit_num, | |
1759 | unsigned int log_unit, __u8 page_code, int cmd_type) | |
1da177e4 LT |
1760 | { |
1761 | ctlr_info_t *h = hba[ctlr]; | |
1762 | CommandList_struct *c; | |
7c832835 | 1763 | u64bit buff_dma_handle; |
1da177e4 LT |
1764 | unsigned long flags; |
1765 | int return_status; | |
1766 | DECLARE_COMPLETION(wait); | |
7c832835 BH |
1767 | |
1768 | if ((c = cmd_alloc(h, 0)) == NULL) | |
1da177e4 LT |
1769 | return -ENOMEM; |
1770 | return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 1771 | log_unit, page_code, NULL, cmd_type); |
1da177e4 LT |
1772 | if (return_status != IO_OK) { |
1773 | cmd_free(h, c, 0); | |
1774 | return return_status; | |
1775 | } | |
7c832835 | 1776 | resend_cmd2: |
1da177e4 | 1777 | c->waiting = &wait; |
7c832835 | 1778 | |
1da177e4 LT |
1779 | /* Put the request on the tail of the queue and send it */ |
1780 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1781 | addQ(&h->reqQ, c); | |
1782 | h->Qdepth++; | |
1783 | start_io(h); | |
1784 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 1785 | |
1da177e4 LT |
1786 | wait_for_completion(&wait); |
1787 | ||
7c832835 BH |
1788 | if (c->err_info->CommandStatus != 0) { /* an error has occurred */ |
1789 | switch (c->err_info->CommandStatus) { | |
1790 | case CMD_TARGET_STATUS: | |
1791 | printk(KERN_WARNING "cciss: cmd %p has " | |
1792 | " completed with errors\n", c); | |
1793 | if (c->err_info->ScsiStatus) { | |
1794 | printk(KERN_WARNING "cciss: cmd %p " | |
1795 | "has SCSI Status = %x\n", | |
1796 | c, c->err_info->ScsiStatus); | |
1797 | } | |
1da177e4 LT |
1798 | |
1799 | break; | |
7c832835 BH |
1800 | case CMD_DATA_UNDERRUN: |
1801 | case CMD_DATA_OVERRUN: | |
1da177e4 LT |
1802 | /* expected for inquire and report lun commands */ |
1803 | break; | |
7c832835 BH |
1804 | case CMD_INVALID: |
1805 | printk(KERN_WARNING "cciss: Cmd %p is " | |
1806 | "reported invalid\n", c); | |
1807 | return_status = IO_ERROR; | |
1da177e4 | 1808 | break; |
7c832835 BH |
1809 | case CMD_PROTOCOL_ERR: |
1810 | printk(KERN_WARNING "cciss: cmd %p has " | |
1811 | "protocol error \n", c); | |
1812 | return_status = IO_ERROR; | |
1da177e4 | 1813 | break; |
7c832835 BH |
1814 | case CMD_HARDWARE_ERR: |
1815 | printk(KERN_WARNING "cciss: cmd %p had " | |
1816 | " hardware error\n", c); | |
1817 | return_status = IO_ERROR; | |
1da177e4 | 1818 | break; |
7c832835 BH |
1819 | case CMD_CONNECTION_LOST: |
1820 | printk(KERN_WARNING "cciss: cmd %p had " | |
1821 | "connection lost\n", c); | |
1822 | return_status = IO_ERROR; | |
1da177e4 | 1823 | break; |
7c832835 BH |
1824 | case CMD_ABORTED: |
1825 | printk(KERN_WARNING "cciss: cmd %p was " | |
1826 | "aborted\n", c); | |
1827 | return_status = IO_ERROR; | |
1da177e4 | 1828 | break; |
7c832835 BH |
1829 | case CMD_ABORT_FAILED: |
1830 | printk(KERN_WARNING "cciss: cmd %p reports " | |
1831 | "abort failed\n", c); | |
1832 | return_status = IO_ERROR; | |
1833 | break; | |
1834 | case CMD_UNSOLICITED_ABORT: | |
1835 | printk(KERN_WARNING | |
1836 | "cciss%d: unsolicited abort %p\n", ctlr, c); | |
1837 | if (c->retry_count < MAX_CMD_RETRIES) { | |
1838 | printk(KERN_WARNING | |
1839 | "cciss%d: retrying %p\n", ctlr, c); | |
1840 | c->retry_count++; | |
1841 | /* erase the old error information */ | |
1842 | memset(c->err_info, 0, | |
1843 | sizeof(ErrorInfo_struct)); | |
1844 | return_status = IO_OK; | |
1845 | INIT_COMPLETION(wait); | |
1846 | goto resend_cmd2; | |
1847 | } | |
1848 | return_status = IO_ERROR; | |
1849 | break; | |
1850 | default: | |
1851 | printk(KERN_WARNING "cciss: cmd %p returned " | |
1852 | "unknown status %x\n", c, | |
1853 | c->err_info->CommandStatus); | |
1854 | return_status = IO_ERROR; | |
1da177e4 | 1855 | } |
7c832835 | 1856 | } |
1da177e4 | 1857 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
1858 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
1859 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
1860 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
1861 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
1da177e4 | 1862 | cmd_free(h, c, 0); |
7c832835 | 1863 | return return_status; |
1da177e4 | 1864 | } |
7c832835 | 1865 | |
1da177e4 | 1866 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
7c832835 BH |
1867 | int withirq, unsigned int total_size, |
1868 | unsigned int block_size, | |
1869 | InquiryData_struct *inq_buff, | |
1870 | drive_info_struct *drv) | |
1da177e4 LT |
1871 | { |
1872 | int return_code; | |
1873 | memset(inq_buff, 0, sizeof(InquiryData_struct)); | |
1874 | if (withirq) | |
1875 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, | |
7c832835 BH |
1876 | inq_buff, sizeof(*inq_buff), 1, |
1877 | logvol, 0xC1, TYPE_CMD); | |
1da177e4 LT |
1878 | else |
1879 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, | |
7c832835 BH |
1880 | sizeof(*inq_buff), 1, logvol, 0xC1, NULL, |
1881 | TYPE_CMD); | |
1da177e4 | 1882 | if (return_code == IO_OK) { |
7c832835 | 1883 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 1884 | printk(KERN_WARNING |
7c832835 BH |
1885 | "cciss: reading geometry failed, volume " |
1886 | "does not support reading geometry\n"); | |
1da177e4 LT |
1887 | drv->block_size = block_size; |
1888 | drv->nr_blocks = total_size; | |
1889 | drv->heads = 255; | |
7c832835 | 1890 | drv->sectors = 32; // Sectors per track |
1da177e4 LT |
1891 | drv->cylinders = total_size / 255 / 32; |
1892 | } else { | |
1893 | unsigned int t; | |
1894 | ||
1895 | drv->block_size = block_size; | |
1896 | drv->nr_blocks = total_size; | |
1897 | drv->heads = inq_buff->data_byte[6]; | |
1898 | drv->sectors = inq_buff->data_byte[7]; | |
1899 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
1900 | drv->cylinders += inq_buff->data_byte[5]; | |
1901 | drv->raid_level = inq_buff->data_byte[8]; | |
1902 | t = drv->heads * drv->sectors; | |
1903 | if (t > 1) { | |
7c832835 | 1904 | drv->cylinders = total_size / t; |
1da177e4 LT |
1905 | } |
1906 | } | |
7c832835 | 1907 | } else { /* Get geometry failed */ |
1da177e4 LT |
1908 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
1909 | } | |
1910 | printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n", | |
7c832835 | 1911 | drv->heads, drv->sectors, drv->cylinders); |
1da177e4 | 1912 | } |
7c832835 | 1913 | |
1da177e4 LT |
1914 | static void |
1915 | cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf, | |
7c832835 BH |
1916 | int withirq, unsigned int *total_size, |
1917 | unsigned int *block_size) | |
1da177e4 LT |
1918 | { |
1919 | int return_code; | |
1920 | memset(buf, 0, sizeof(*buf)); | |
1921 | if (withirq) | |
1922 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, | |
7c832835 BH |
1923 | ctlr, buf, sizeof(*buf), 1, |
1924 | logvol, 0, TYPE_CMD); | |
1da177e4 LT |
1925 | else |
1926 | return_code = sendcmd(CCISS_READ_CAPACITY, | |
7c832835 BH |
1927 | ctlr, buf, sizeof(*buf), 1, logvol, 0, |
1928 | NULL, TYPE_CMD); | |
1da177e4 | 1929 | if (return_code == IO_OK) { |
7c832835 BH |
1930 | *total_size = |
1931 | be32_to_cpu(*((__be32 *) & buf->total_size[0])) + 1; | |
1932 | *block_size = be32_to_cpu(*((__be32 *) & buf->block_size[0])); | |
1933 | } else { /* read capacity command failed */ | |
1da177e4 LT |
1934 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
1935 | *total_size = 0; | |
1936 | *block_size = BLOCK_SIZE; | |
1937 | } | |
1938 | printk(KERN_INFO " blocks= %u block_size= %d\n", | |
7c832835 | 1939 | *total_size, *block_size); |
1da177e4 LT |
1940 | return; |
1941 | } | |
1942 | ||
1da177e4 LT |
1943 | static int cciss_revalidate(struct gendisk *disk) |
1944 | { | |
1945 | ctlr_info_t *h = get_host(disk); | |
1946 | drive_info_struct *drv = get_drv(disk); | |
1947 | int logvol; | |
7c832835 | 1948 | int FOUND = 0; |
1da177e4 LT |
1949 | unsigned int block_size; |
1950 | unsigned int total_size; | |
1951 | ReadCapdata_struct *size_buff = NULL; | |
1952 | InquiryData_struct *inq_buff = NULL; | |
1953 | ||
7c832835 BH |
1954 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
1955 | if (h->drv[logvol].LunID == drv->LunID) { | |
1956 | FOUND = 1; | |
1da177e4 LT |
1957 | break; |
1958 | } | |
1959 | } | |
1960 | ||
7c832835 BH |
1961 | if (!FOUND) |
1962 | return 1; | |
1da177e4 | 1963 | |
7c832835 BH |
1964 | size_buff = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); |
1965 | if (size_buff == NULL) { | |
1966 | printk(KERN_WARNING "cciss: out of memory\n"); | |
1967 | return 1; | |
1968 | } | |
1969 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
1970 | if (inq_buff == NULL) { | |
1971 | printk(KERN_WARNING "cciss: out of memory\n"); | |
1da177e4 | 1972 | kfree(size_buff); |
7c832835 BH |
1973 | return 1; |
1974 | } | |
1da177e4 | 1975 | |
7c832835 BH |
1976 | cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, |
1977 | &block_size); | |
1978 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, | |
1979 | inq_buff, drv); | |
1da177e4 | 1980 | |
ad2b9312 | 1981 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
1da177e4 LT |
1982 | set_capacity(disk, drv->nr_blocks); |
1983 | ||
1984 | kfree(size_buff); | |
1985 | kfree(inq_buff); | |
1986 | return 0; | |
1987 | } | |
1988 | ||
1989 | /* | |
1990 | * Wait polling for a command to complete. | |
1991 | * The memory mapped FIFO is polled for the completion. | |
1992 | * Used only at init time, interrupts from the HBA are disabled. | |
1993 | */ | |
1994 | static unsigned long pollcomplete(int ctlr) | |
1995 | { | |
1996 | unsigned long done; | |
1997 | int i; | |
1998 | ||
1999 | /* Wait (up to 20 seconds) for a command to complete */ | |
2000 | ||
2001 | for (i = 20 * HZ; i > 0; i--) { | |
2002 | done = hba[ctlr]->access.command_completed(hba[ctlr]); | |
86e84862 NA |
2003 | if (done == FIFO_EMPTY) |
2004 | schedule_timeout_uninterruptible(1); | |
2005 | else | |
e2019b58 | 2006 | return done; |
1da177e4 LT |
2007 | } |
2008 | /* Invalid address to tell caller we ran out of time */ | |
2009 | return 1; | |
2010 | } | |
3da8b713 | 2011 | |
2012 | static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) | |
2013 | { | |
2014 | /* We get in here if sendcmd() is polling for completions | |
7c832835 BH |
2015 | and gets some command back that it wasn't expecting -- |
2016 | something other than that which it just sent down. | |
2017 | Ordinarily, that shouldn't happen, but it can happen when | |
3da8b713 | 2018 | the scsi tape stuff gets into error handling mode, and |
7c832835 | 2019 | starts using sendcmd() to try to abort commands and |
3da8b713 | 2020 | reset tape drives. In that case, sendcmd may pick up |
2021 | completions of commands that were sent to logical drives | |
7c832835 | 2022 | through the block i/o system, or cciss ioctls completing, etc. |
3da8b713 | 2023 | In that case, we need to save those completions for later |
2024 | processing by the interrupt handler. | |
7c832835 | 2025 | */ |
3da8b713 | 2026 | |
2027 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2028 | struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects; |
3da8b713 | 2029 | |
2030 | /* If it's not the scsi tape stuff doing error handling, (abort */ | |
2031 | /* or reset) then we don't expect anything weird. */ | |
2032 | if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) { | |
2033 | #endif | |
7c832835 BH |
2034 | printk(KERN_WARNING "cciss cciss%d: SendCmd " |
2035 | "Invalid command list address returned! (%lx)\n", | |
2036 | ctlr, complete); | |
3da8b713 | 2037 | /* not much we can do. */ |
2038 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2039 | return 1; | |
2040 | } | |
2041 | ||
2042 | /* We've sent down an abort or reset, but something else | |
2043 | has completed */ | |
2044 | if (srl->ncompletions >= (NR_CMDS + 2)) { | |
2045 | /* Uh oh. No room to save it for later... */ | |
2046 | printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, " | |
7c832835 | 2047 | "reject list overflow, command lost!\n", ctlr); |
3da8b713 | 2048 | return 1; |
2049 | } | |
2050 | /* Save it for later */ | |
2051 | srl->complete[srl->ncompletions] = complete; | |
2052 | srl->ncompletions++; | |
2053 | #endif | |
2054 | return 0; | |
2055 | } | |
2056 | ||
1da177e4 | 2057 | /* |
7c832835 BH |
2058 | * Send a command to the controller, and wait for it to complete. |
2059 | * Only used at init time. | |
1da177e4 | 2060 | */ |
7c832835 BH |
2061 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, |
2062 | 1: address logical volume log_unit, | |
2063 | 2: periph device address is scsi3addr */ | |
2064 | unsigned int log_unit, | |
2065 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) | |
1da177e4 LT |
2066 | { |
2067 | CommandList_struct *c; | |
2068 | int i; | |
2069 | unsigned long complete; | |
7c832835 | 2070 | ctlr_info_t *info_p = hba[ctlr]; |
1da177e4 | 2071 | u64bit buff_dma_handle; |
3da8b713 | 2072 | int status, done = 0; |
1da177e4 LT |
2073 | |
2074 | if ((c = cmd_alloc(info_p, 1)) == NULL) { | |
2075 | printk(KERN_WARNING "cciss: unable to get memory"); | |
e2019b58 | 2076 | return IO_ERROR; |
1da177e4 LT |
2077 | } |
2078 | status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 2079 | log_unit, page_code, scsi3addr, cmd_type); |
1da177e4 LT |
2080 | if (status != IO_OK) { |
2081 | cmd_free(info_p, c, 1); | |
2082 | return status; | |
2083 | } | |
7c832835 | 2084 | resend_cmd1: |
1da177e4 | 2085 | /* |
7c832835 BH |
2086 | * Disable interrupt |
2087 | */ | |
1da177e4 LT |
2088 | #ifdef CCISS_DEBUG |
2089 | printk(KERN_DEBUG "cciss: turning intr off\n"); | |
7c832835 BH |
2090 | #endif /* CCISS_DEBUG */ |
2091 | info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF); | |
2092 | ||
1da177e4 | 2093 | /* Make sure there is room in the command FIFO */ |
7c832835 | 2094 | /* Actually it should be completely empty at this time */ |
3da8b713 | 2095 | /* unless we are in here doing error handling for the scsi */ |
2096 | /* tape side of the driver. */ | |
7c832835 | 2097 | for (i = 200000; i > 0; i--) { |
1da177e4 | 2098 | /* if fifo isn't full go */ |
7c832835 BH |
2099 | if (!(info_p->access.fifo_full(info_p))) { |
2100 | ||
2101 | break; | |
2102 | } | |
2103 | udelay(10); | |
2104 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," | |
2105 | " waiting!\n", ctlr); | |
2106 | } | |
2107 | /* | |
2108 | * Send the cmd | |
2109 | */ | |
2110 | info_p->access.submit_command(info_p, c); | |
3da8b713 | 2111 | done = 0; |
2112 | do { | |
2113 | complete = pollcomplete(ctlr); | |
1da177e4 LT |
2114 | |
2115 | #ifdef CCISS_DEBUG | |
3da8b713 | 2116 | printk(KERN_DEBUG "cciss: command completed\n"); |
7c832835 | 2117 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2118 | |
3da8b713 | 2119 | if (complete == 1) { |
7c832835 BH |
2120 | printk(KERN_WARNING |
2121 | "cciss cciss%d: SendCmd Timeout out, " | |
2122 | "No command list address returned!\n", ctlr); | |
3da8b713 | 2123 | status = IO_ERROR; |
2124 | done = 1; | |
2125 | break; | |
2126 | } | |
2127 | ||
2128 | /* This will need to change for direct lookup completions */ | |
7c832835 BH |
2129 | if ((complete & CISS_ERROR_BIT) |
2130 | && (complete & ~CISS_ERROR_BIT) == c->busaddr) { | |
2131 | /* if data overrun or underun on Report command | |
2132 | ignore it | |
2133 | */ | |
1da177e4 LT |
2134 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || |
2135 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || | |
2136 | (c->Request.CDB[0] == CISS_INQUIRY)) && | |
7c832835 BH |
2137 | ((c->err_info->CommandStatus == |
2138 | CMD_DATA_OVERRUN) || | |
2139 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN) | |
2140 | )) { | |
1da177e4 LT |
2141 | complete = c->busaddr; |
2142 | } else { | |
2143 | if (c->err_info->CommandStatus == | |
7c832835 | 2144 | CMD_UNSOLICITED_ABORT) { |
1da177e4 | 2145 | printk(KERN_WARNING "cciss%d: " |
7c832835 BH |
2146 | "unsolicited abort %p\n", |
2147 | ctlr, c); | |
1da177e4 LT |
2148 | if (c->retry_count < MAX_CMD_RETRIES) { |
2149 | printk(KERN_WARNING | |
7c832835 BH |
2150 | "cciss%d: retrying %p\n", |
2151 | ctlr, c); | |
1da177e4 LT |
2152 | c->retry_count++; |
2153 | /* erase the old error */ | |
2154 | /* information */ | |
2155 | memset(c->err_info, 0, | |
7c832835 BH |
2156 | sizeof |
2157 | (ErrorInfo_struct)); | |
1da177e4 LT |
2158 | goto resend_cmd1; |
2159 | } else { | |
2160 | printk(KERN_WARNING | |
7c832835 BH |
2161 | "cciss%d: retried %p too " |
2162 | "many times\n", ctlr, c); | |
1da177e4 LT |
2163 | status = IO_ERROR; |
2164 | goto cleanup1; | |
2165 | } | |
7c832835 BH |
2166 | } else if (c->err_info->CommandStatus == |
2167 | CMD_UNABORTABLE) { | |
2168 | printk(KERN_WARNING | |
2169 | "cciss%d: command could not be aborted.\n", | |
2170 | ctlr); | |
3da8b713 | 2171 | status = IO_ERROR; |
2172 | goto cleanup1; | |
1da177e4 LT |
2173 | } |
2174 | printk(KERN_WARNING "ciss ciss%d: sendcmd" | |
7c832835 BH |
2175 | " Error %x \n", ctlr, |
2176 | c->err_info->CommandStatus); | |
1da177e4 | 2177 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
7c832835 BH |
2178 | " offensive info\n" |
2179 | " size %x\n num %x value %x\n", | |
2180 | ctlr, | |
2181 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2182 | offense_size, | |
2183 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2184 | offense_num, | |
2185 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2186 | offense_value); | |
1da177e4 LT |
2187 | status = IO_ERROR; |
2188 | goto cleanup1; | |
2189 | } | |
2190 | } | |
3da8b713 | 2191 | /* This will need changing for direct lookup completions */ |
7c832835 | 2192 | if (complete != c->busaddr) { |
3da8b713 | 2193 | if (add_sendcmd_reject(cmd, ctlr, complete) != 0) { |
7c832835 | 2194 | BUG(); /* we are pretty much hosed if we get here. */ |
3da8b713 | 2195 | } |
2196 | continue; | |
7c832835 | 2197 | } else |
3da8b713 | 2198 | done = 1; |
7c832835 BH |
2199 | } while (!done); |
2200 | ||
2201 | cleanup1: | |
1da177e4 | 2202 | /* unlock the data buffer from DMA */ |
bb2a37bf MM |
2203 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2204 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
1da177e4 | 2205 | pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val, |
7c832835 | 2206 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
3da8b713 | 2207 | #ifdef CONFIG_CISS_SCSI_TAPE |
2208 | /* if we saved some commands for later, process them now. */ | |
2209 | if (info_p->scsi_rejects.ncompletions > 0) | |
2210 | do_cciss_intr(0, info_p, NULL); | |
2211 | #endif | |
1da177e4 | 2212 | cmd_free(info_p, c, 1); |
e2019b58 | 2213 | return status; |
7c832835 BH |
2214 | } |
2215 | ||
1da177e4 LT |
2216 | /* |
2217 | * Map (physical) PCI mem into (virtual) kernel space | |
2218 | */ | |
2219 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2220 | { | |
7c832835 BH |
2221 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2222 | ulong page_offs = ((ulong) base) - page_base; | |
2223 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2224 | |
7c832835 | 2225 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2226 | } |
2227 | ||
7c832835 BH |
2228 | /* |
2229 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2230 | * the Q to wait for completion. | |
2231 | */ | |
2232 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
2233 | { |
2234 | CommandList_struct *c; | |
7c832835 BH |
2235 | |
2236 | while ((c = h->reqQ) != NULL) { | |
1da177e4 LT |
2237 | /* can't do anything if fifo is full */ |
2238 | if ((h->access.fifo_full(h))) { | |
2239 | printk(KERN_WARNING "cciss: fifo full\n"); | |
2240 | break; | |
2241 | } | |
2242 | ||
7c832835 | 2243 | /* Get the first entry from the Request Q */ |
1da177e4 LT |
2244 | removeQ(&(h->reqQ), c); |
2245 | h->Qdepth--; | |
7c832835 BH |
2246 | |
2247 | /* Tell the controller execute command */ | |
1da177e4 | 2248 | h->access.submit_command(h, c); |
7c832835 BH |
2249 | |
2250 | /* Put job onto the completed Q */ | |
2251 | addQ(&(h->cmpQ), c); | |
1da177e4 LT |
2252 | } |
2253 | } | |
7c832835 | 2254 | |
1da177e4 LT |
2255 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
2256 | /* Zeros out the error record and then resends the command back */ | |
2257 | /* to the controller */ | |
7c832835 | 2258 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
2259 | { |
2260 | /* erase the old error information */ | |
2261 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2262 | ||
2263 | /* add it to software queue and then send it to the controller */ | |
7c832835 | 2264 | addQ(&(h->reqQ), c); |
1da177e4 | 2265 | h->Qdepth++; |
7c832835 | 2266 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
2267 | h->maxQsinceinit = h->Qdepth; |
2268 | ||
2269 | start_io(h); | |
2270 | } | |
a9925a06 | 2271 | |
7c832835 | 2272 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
2273 | * buffers for the completed job. Note that this function does not need |
2274 | * to hold the hba/queue lock. | |
7c832835 BH |
2275 | */ |
2276 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
2277 | int timeout) | |
1da177e4 LT |
2278 | { |
2279 | int status = 1; | |
1da177e4 | 2280 | int retry_cmd = 0; |
7c832835 | 2281 | |
1da177e4 | 2282 | if (timeout) |
7c832835 | 2283 | status = 0; |
1da177e4 | 2284 | |
7c832835 BH |
2285 | if (cmd->err_info->CommandStatus != 0) { /* an error has occurred */ |
2286 | switch (cmd->err_info->CommandStatus) { | |
1da177e4 | 2287 | unsigned char sense_key; |
7c832835 BH |
2288 | case CMD_TARGET_STATUS: |
2289 | status = 0; | |
2290 | ||
2291 | if (cmd->err_info->ScsiStatus == 0x02) { | |
2292 | printk(KERN_WARNING "cciss: cmd %p " | |
2293 | "has CHECK CONDITION " | |
2294 | " byte 2 = 0x%x\n", cmd, | |
2295 | cmd->err_info->SenseInfo[2] | |
2296 | ); | |
2297 | /* check the sense key */ | |
2298 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
2299 | /* no status or recovered error */ | |
2300 | if ((sense_key == 0x0) || (sense_key == 0x1)) { | |
2301 | status = 1; | |
1da177e4 | 2302 | } |
7c832835 BH |
2303 | } else { |
2304 | printk(KERN_WARNING "cciss: cmd %p " | |
2305 | "has SCSI Status 0x%x\n", | |
2306 | cmd, cmd->err_info->ScsiStatus); | |
2307 | } | |
1da177e4 | 2308 | break; |
7c832835 BH |
2309 | case CMD_DATA_UNDERRUN: |
2310 | printk(KERN_WARNING "cciss: cmd %p has" | |
2311 | " completed with data underrun " | |
2312 | "reported\n", cmd); | |
1da177e4 | 2313 | break; |
7c832835 BH |
2314 | case CMD_DATA_OVERRUN: |
2315 | printk(KERN_WARNING "cciss: cmd %p has" | |
2316 | " completed with data overrun " | |
2317 | "reported\n", cmd); | |
1da177e4 | 2318 | break; |
7c832835 BH |
2319 | case CMD_INVALID: |
2320 | printk(KERN_WARNING "cciss: cmd %p is " | |
2321 | "reported invalid\n", cmd); | |
2322 | status = 0; | |
1da177e4 | 2323 | break; |
7c832835 BH |
2324 | case CMD_PROTOCOL_ERR: |
2325 | printk(KERN_WARNING "cciss: cmd %p has " | |
2326 | "protocol error \n", cmd); | |
2327 | status = 0; | |
1da177e4 | 2328 | break; |
7c832835 BH |
2329 | case CMD_HARDWARE_ERR: |
2330 | printk(KERN_WARNING "cciss: cmd %p had " | |
2331 | " hardware error\n", cmd); | |
2332 | status = 0; | |
1da177e4 | 2333 | break; |
7c832835 BH |
2334 | case CMD_CONNECTION_LOST: |
2335 | printk(KERN_WARNING "cciss: cmd %p had " | |
2336 | "connection lost\n", cmd); | |
2337 | status = 0; | |
1da177e4 | 2338 | break; |
7c832835 BH |
2339 | case CMD_ABORTED: |
2340 | printk(KERN_WARNING "cciss: cmd %p was " | |
2341 | "aborted\n", cmd); | |
2342 | status = 0; | |
1da177e4 | 2343 | break; |
7c832835 BH |
2344 | case CMD_ABORT_FAILED: |
2345 | printk(KERN_WARNING "cciss: cmd %p reports " | |
2346 | "abort failed\n", cmd); | |
2347 | status = 0; | |
1da177e4 | 2348 | break; |
7c832835 BH |
2349 | case CMD_UNSOLICITED_ABORT: |
2350 | printk(KERN_WARNING "cciss%d: unsolicited " | |
2351 | "abort %p\n", h->ctlr, cmd); | |
2352 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
2353 | retry_cmd = 1; | |
2354 | printk(KERN_WARNING | |
2355 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
2356 | cmd->retry_count++; | |
2357 | } else | |
2358 | printk(KERN_WARNING | |
2359 | "cciss%d: %p retried too " | |
2360 | "many times\n", h->ctlr, cmd); | |
2361 | status = 0; | |
2362 | break; | |
2363 | case CMD_TIMEOUT: | |
2364 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
2365 | status = 0; | |
2366 | break; | |
2367 | default: | |
2368 | printk(KERN_WARNING "cciss: cmd %p returned " | |
2369 | "unknown status %x\n", cmd, | |
2370 | cmd->err_info->CommandStatus); | |
2371 | status = 0; | |
1da177e4 LT |
2372 | } |
2373 | } | |
2374 | /* We need to return this command */ | |
7c832835 BH |
2375 | if (retry_cmd) { |
2376 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 2377 | return; |
7c832835 | 2378 | } |
1da177e4 | 2379 | |
a9925a06 JA |
2380 | cmd->rq->completion_data = cmd; |
2381 | cmd->rq->errors = status; | |
2056a782 | 2382 | blk_add_trace_rq(cmd->rq->q, cmd->rq, BLK_TA_COMPLETE); |
a9925a06 | 2383 | blk_complete_request(cmd->rq); |
1da177e4 LT |
2384 | } |
2385 | ||
7c832835 BH |
2386 | /* |
2387 | * Get a request and submit it to the controller. | |
1da177e4 LT |
2388 | */ |
2389 | static void do_cciss_request(request_queue_t *q) | |
2390 | { | |
7c832835 | 2391 | ctlr_info_t *h = q->queuedata; |
1da177e4 LT |
2392 | CommandList_struct *c; |
2393 | int start_blk, seg; | |
2394 | struct request *creq; | |
2395 | u64bit temp64; | |
2396 | struct scatterlist tmp_sg[MAXSGENTRIES]; | |
2397 | drive_info_struct *drv; | |
2398 | int i, dir; | |
2399 | ||
2400 | /* We call start_io here in case there is a command waiting on the | |
2401 | * queue that has not been sent. | |
7c832835 | 2402 | */ |
1da177e4 LT |
2403 | if (blk_queue_plugged(q)) |
2404 | goto startio; | |
2405 | ||
7c832835 | 2406 | queue: |
1da177e4 LT |
2407 | creq = elv_next_request(q); |
2408 | if (!creq) | |
2409 | goto startio; | |
2410 | ||
089fe1b2 | 2411 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
1da177e4 | 2412 | |
7c832835 | 2413 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
2414 | goto full; |
2415 | ||
2416 | blkdev_dequeue_request(creq); | |
2417 | ||
2418 | spin_unlock_irq(q->queue_lock); | |
2419 | ||
2420 | c->cmd_type = CMD_RWREQ; | |
2421 | c->rq = creq; | |
7c832835 BH |
2422 | |
2423 | /* fill in the request */ | |
1da177e4 | 2424 | drv = creq->rq_disk->private_data; |
7c832835 | 2425 | c->Header.ReplyQueue = 0; // unused in simple mode |
33079b21 MM |
2426 | /* got command from pool, so use the command block index instead */ |
2427 | /* for direct lookups. */ | |
2428 | /* The first 2 bits are reserved for controller error reporting. */ | |
2429 | c->Header.Tag.lower = (c->cmdindex << 3); | |
7c832835 BH |
2430 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
2431 | c->Header.LUN.LogDev.VolId = drv->LunID; | |
1da177e4 | 2432 | c->Header.LUN.LogDev.Mode = 1; |
7c832835 BH |
2433 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
2434 | c->Request.Type.Type = TYPE_CMD; // It is a command. | |
2435 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2436 | c->Request.Type.Direction = | |
2437 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; | |
2438 | c->Request.Timeout = 0; // Don't time out | |
2439 | c->Request.CDB[0] = | |
2440 | (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE; | |
1da177e4 LT |
2441 | start_blk = creq->sector; |
2442 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2443 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", (int)creq->sector, |
2444 | (int)creq->nr_sectors); | |
2445 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
2446 | |
2447 | seg = blk_rq_map_sg(q, creq, tmp_sg); | |
2448 | ||
7c832835 | 2449 | /* get the DMA records for the setup */ |
1da177e4 LT |
2450 | if (c->Request.Type.Direction == XFER_READ) |
2451 | dir = PCI_DMA_FROMDEVICE; | |
2452 | else | |
2453 | dir = PCI_DMA_TODEVICE; | |
2454 | ||
7c832835 | 2455 | for (i = 0; i < seg; i++) { |
1da177e4 LT |
2456 | c->SG[i].Len = tmp_sg[i].length; |
2457 | temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page, | |
7c832835 BH |
2458 | tmp_sg[i].offset, |
2459 | tmp_sg[i].length, dir); | |
1da177e4 | 2460 | c->SG[i].Addr.lower = temp64.val32.lower; |
7c832835 BH |
2461 | c->SG[i].Addr.upper = temp64.val32.upper; |
2462 | c->SG[i].Ext = 0; // we are not chaining | |
1da177e4 | 2463 | } |
7c832835 BH |
2464 | /* track how many SG entries we are using */ |
2465 | if (seg > h->maxSG) | |
2466 | h->maxSG = seg; | |
1da177e4 LT |
2467 | |
2468 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2469 | printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", |
2470 | creq->nr_sectors, seg); | |
2471 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
2472 | |
2473 | c->Header.SGList = c->Header.SGTotal = seg; | |
7c832835 BH |
2474 | c->Request.CDB[1] = 0; |
2475 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB | |
2476 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; | |
2477 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
2478 | c->Request.CDB[5] = start_blk & 0xff; | |
2479 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB | |
2480 | c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff; | |
2481 | c->Request.CDB[8] = creq->nr_sectors & 0xff; | |
1da177e4 LT |
2482 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
2483 | ||
2484 | spin_lock_irq(q->queue_lock); | |
2485 | ||
7c832835 | 2486 | addQ(&(h->reqQ), c); |
1da177e4 | 2487 | h->Qdepth++; |
7c832835 BH |
2488 | if (h->Qdepth > h->maxQsinceinit) |
2489 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
2490 | |
2491 | goto queue; | |
7c832835 | 2492 | full: |
1da177e4 | 2493 | blk_stop_queue(q); |
7c832835 | 2494 | startio: |
1da177e4 LT |
2495 | /* We will already have the driver lock here so not need |
2496 | * to lock it. | |
7c832835 | 2497 | */ |
1da177e4 LT |
2498 | start_io(h); |
2499 | } | |
2500 | ||
3da8b713 | 2501 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
2502 | { | |
2503 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2504 | /* Any rejects from sendcmd() lying around? Process them first */ | |
2505 | if (h->scsi_rejects.ncompletions == 0) | |
2506 | return h->access.command_completed(h); | |
2507 | else { | |
2508 | struct sendcmd_reject_list *srl; | |
2509 | int n; | |
2510 | srl = &h->scsi_rejects; | |
2511 | n = --srl->ncompletions; | |
2512 | /* printk("cciss%d: processing saved reject\n", h->ctlr); */ | |
2513 | printk("p"); | |
2514 | return srl->complete[n]; | |
2515 | } | |
2516 | #else | |
2517 | return h->access.command_completed(h); | |
2518 | #endif | |
2519 | } | |
2520 | ||
2521 | static inline int interrupt_pending(ctlr_info_t *h) | |
2522 | { | |
2523 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2524 | return (h->access.intr_pending(h) |
3da8b713 | 2525 | || (h->scsi_rejects.ncompletions > 0)); |
2526 | #else | |
2527 | return h->access.intr_pending(h); | |
2528 | #endif | |
2529 | } | |
2530 | ||
2531 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
2532 | { | |
2533 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
2534 | return (((h->access.intr_pending(h) == 0) || |
2535 | (h->interrupts_enabled == 0)) | |
2536 | && (h->scsi_rejects.ncompletions == 0)); | |
3da8b713 | 2537 | #else |
7c832835 | 2538 | return (((h->access.intr_pending(h) == 0) || |
3da8b713 | 2539 | (h->interrupts_enabled == 0))); |
2540 | #endif | |
2541 | } | |
2542 | ||
1da177e4 LT |
2543 | static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs) |
2544 | { | |
2545 | ctlr_info_t *h = dev_id; | |
2546 | CommandList_struct *c; | |
2547 | unsigned long flags; | |
33079b21 | 2548 | __u32 a, a1, a2; |
1da177e4 LT |
2549 | int j; |
2550 | int start_queue = h->next_to_run; | |
2551 | ||
3da8b713 | 2552 | if (interrupt_not_for_us(h)) |
1da177e4 | 2553 | return IRQ_NONE; |
1da177e4 LT |
2554 | /* |
2555 | * If there are completed commands in the completion queue, | |
2556 | * we had better do something about it. | |
2557 | */ | |
2558 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 2559 | while (interrupt_pending(h)) { |
7c832835 | 2560 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
1da177e4 | 2561 | a1 = a; |
33079b21 MM |
2562 | if ((a & 0x04)) { |
2563 | a2 = (a >> 3); | |
2564 | if (a2 >= NR_CMDS) { | |
7c832835 BH |
2565 | printk(KERN_WARNING |
2566 | "cciss: controller cciss%d failed, stopping.\n", | |
2567 | h->ctlr); | |
33079b21 MM |
2568 | fail_all_cmds(h->ctlr); |
2569 | return IRQ_HANDLED; | |
2570 | } | |
2571 | ||
2572 | c = h->cmd_pool + a2; | |
2573 | a = c->busaddr; | |
2574 | ||
2575 | } else { | |
7c832835 | 2576 | a &= ~3; |
33079b21 | 2577 | if ((c = h->cmpQ) == NULL) { |
7c832835 BH |
2578 | printk(KERN_WARNING |
2579 | "cciss: Completion of %08x ignored\n", | |
2580 | a1); | |
2581 | continue; | |
2582 | } | |
2583 | while (c->busaddr != a) { | |
2584 | c = c->next; | |
2585 | if (c == h->cmpQ) | |
2586 | break; | |
2587 | } | |
33079b21 | 2588 | } |
1da177e4 LT |
2589 | /* |
2590 | * If we've found the command, take it off the | |
2591 | * completion Q and free it | |
2592 | */ | |
7c832835 | 2593 | if (c->busaddr == a) { |
1da177e4 LT |
2594 | removeQ(&h->cmpQ, c); |
2595 | if (c->cmd_type == CMD_RWREQ) { | |
2596 | complete_command(h, c, 0); | |
2597 | } else if (c->cmd_type == CMD_IOCTL_PEND) { | |
2598 | complete(c->waiting); | |
2599 | } | |
2600 | # ifdef CONFIG_CISS_SCSI_TAPE | |
2601 | else if (c->cmd_type == CMD_SCSI) | |
2602 | complete_scsi_command(c, 0, a1); | |
2603 | # endif | |
2604 | continue; | |
2605 | } | |
2606 | } | |
2607 | } | |
2608 | ||
7c832835 BH |
2609 | /* check to see if we have maxed out the number of commands that can |
2610 | * be placed on the queue. If so then exit. We do this check here | |
2611 | * in case the interrupt we serviced was from an ioctl and did not | |
2612 | * free any new commands. | |
2613 | */ | |
2614 | if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS) | |
2615 | goto cleanup; | |
2616 | ||
2617 | /* We have room on the queue for more commands. Now we need to queue | |
2618 | * them up. We will also keep track of the next queue to run so | |
2619 | * that every queue gets a chance to be started first. | |
1da177e4 | 2620 | */ |
7c832835 | 2621 | for (j = 0; j < h->highest_lun + 1; j++) { |
ad2b9312 | 2622 | int curr_queue = (start_queue + j) % (h->highest_lun + 1); |
7c832835 BH |
2623 | /* make sure the disk has been added and the drive is real |
2624 | * because this can be called from the middle of init_one. | |
2625 | */ | |
2626 | if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads)) | |
2627 | continue; | |
2628 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
2629 | ||
2630 | /* check to see if we have maxed out the number of commands | |
2631 | * that can be placed on the queue. | |
2632 | */ | |
2633 | if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS) { | |
2634 | if (curr_queue == start_queue) { | |
2635 | h->next_to_run = | |
2636 | (start_queue + 1) % (h->highest_lun + 1); | |
2637 | goto cleanup; | |
2638 | } else { | |
2639 | h->next_to_run = curr_queue; | |
2640 | goto cleanup; | |
2641 | } | |
2642 | } else { | |
ad2b9312 | 2643 | curr_queue = (curr_queue + 1) % (h->highest_lun + 1); |
7c832835 BH |
2644 | } |
2645 | } | |
1da177e4 | 2646 | |
7c832835 | 2647 | cleanup: |
1da177e4 LT |
2648 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2649 | return IRQ_HANDLED; | |
2650 | } | |
7c832835 BH |
2651 | |
2652 | /* | |
d14c4ab5 | 2653 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 2654 | * the io functions. |
7c832835 | 2655 | * This is for debug only. |
1da177e4 LT |
2656 | */ |
2657 | #ifdef CCISS_DEBUG | |
7c832835 | 2658 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 LT |
2659 | { |
2660 | int i; | |
2661 | char temp_name[17]; | |
2662 | ||
2663 | printk("Controller Configuration information\n"); | |
2664 | printk("------------------------------------\n"); | |
7c832835 | 2665 | for (i = 0; i < 4; i++) |
1da177e4 | 2666 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
2667 | temp_name[4] = '\0'; |
2668 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 2669 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
2670 | printk(" Transport methods supported = 0x%x\n", |
2671 | readl(&(tb->TransportSupport))); | |
2672 | printk(" Transport methods active = 0x%x\n", | |
2673 | readl(&(tb->TransportActive))); | |
2674 | printk(" Requested transport Method = 0x%x\n", | |
2675 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 2676 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 2677 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 2678 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
2679 | readl(&(tb->HostWrite.CoalIntCount))); |
2680 | printk(" Max outstanding commands = 0x%d\n", | |
2681 | readl(&(tb->CmdsOutMax))); | |
2682 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
2683 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
2684 | temp_name[i] = readb(&(tb->ServerName[i])); |
2685 | temp_name[16] = '\0'; | |
2686 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 2687 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
1da177e4 | 2688 | } |
7c832835 | 2689 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2690 | |
7c832835 | 2691 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
2692 | { |
2693 | int i, offset, mem_type, bar_type; | |
7c832835 | 2694 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
2695 | return 0; |
2696 | offset = 0; | |
7c832835 BH |
2697 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
2698 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
2699 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
2700 | offset += 4; | |
2701 | else { | |
2702 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 2703 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 2704 | switch (mem_type) { |
7c832835 BH |
2705 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
2706 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
2707 | offset += 4; /* 32 bit */ | |
2708 | break; | |
2709 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
2710 | offset += 8; | |
2711 | break; | |
2712 | default: /* reserved in PCI 2.2 */ | |
2713 | printk(KERN_WARNING | |
2714 | "Base address is invalid\n"); | |
2715 | return -1; | |
1da177e4 LT |
2716 | break; |
2717 | } | |
2718 | } | |
7c832835 BH |
2719 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
2720 | return i + 1; | |
1da177e4 LT |
2721 | } |
2722 | return -1; | |
2723 | } | |
2724 | ||
fb86a35b MM |
2725 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
2726 | * controllers that are capable. If not, we use IO-APIC mode. | |
2727 | */ | |
2728 | ||
7c832835 BH |
2729 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
2730 | struct pci_dev *pdev, __u32 board_id) | |
fb86a35b MM |
2731 | { |
2732 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
2733 | int err; |
2734 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
2735 | {0, 2}, {0, 3} | |
2736 | }; | |
fb86a35b MM |
2737 | |
2738 | /* Some boards advertise MSI but don't really support it */ | |
2739 | if ((board_id == 0x40700E11) || | |
7c832835 BH |
2740 | (board_id == 0x40800E11) || |
2741 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
fb86a35b MM |
2742 | goto default_int_mode; |
2743 | ||
7c832835 BH |
2744 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
2745 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); | |
2746 | if (!err) { | |
2747 | c->intr[0] = cciss_msix_entries[0].vector; | |
2748 | c->intr[1] = cciss_msix_entries[1].vector; | |
2749 | c->intr[2] = cciss_msix_entries[2].vector; | |
2750 | c->intr[3] = cciss_msix_entries[3].vector; | |
2751 | c->msix_vector = 1; | |
2752 | return; | |
2753 | } | |
2754 | if (err > 0) { | |
2755 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
2756 | "available\n", err); | |
2757 | } else { | |
2758 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
2759 | err); | |
2760 | } | |
2761 | } | |
2762 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
2763 | if (!pci_enable_msi(pdev)) { | |
2764 | c->intr[SIMPLE_MODE_INT] = pdev->irq; | |
2765 | c->msi_vector = 1; | |
2766 | return; | |
2767 | } else { | |
2768 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
2769 | c->intr[SIMPLE_MODE_INT] = pdev->irq; | |
2770 | return; | |
2771 | } | |
2772 | } | |
2773 | default_int_mode: | |
2774 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 2775 | /* if we get here we're going to use the default interrupt mode */ |
7c832835 | 2776 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
fb86a35b MM |
2777 | return; |
2778 | } | |
2779 | ||
1da177e4 LT |
2780 | static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
2781 | { | |
2782 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
2783 | __u32 board_id, scratchpad = 0; | |
2784 | __u64 cfg_offset; | |
2785 | __u32 cfg_base_addr; | |
2786 | __u64 cfg_base_addr_index; | |
c33ac89b | 2787 | int i, err; |
1da177e4 LT |
2788 | |
2789 | /* check to see if controller has been disabled */ | |
2790 | /* BEFORE trying to enable it */ | |
7c832835 BH |
2791 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
2792 | if (!(command & 0x02)) { | |
2793 | printk(KERN_WARNING | |
2794 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 2795 | return -ENODEV; |
1da177e4 LT |
2796 | } |
2797 | ||
c33ac89b | 2798 | err = pci_enable_device(pdev); |
7c832835 | 2799 | if (err) { |
1da177e4 | 2800 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 2801 | return err; |
1da177e4 | 2802 | } |
1da177e4 | 2803 | |
4e570309 BH |
2804 | err = pci_request_regions(pdev, "cciss"); |
2805 | if (err) { | |
2806 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 2807 | "aborting\n"); |
4e570309 BH |
2808 | goto err_out_disable_pdev; |
2809 | } | |
2810 | ||
1da177e4 LT |
2811 | subsystem_vendor_id = pdev->subsystem_vendor; |
2812 | subsystem_device_id = pdev->subsystem_device; | |
2813 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
7c832835 | 2814 | subsystem_vendor_id); |
1da177e4 | 2815 | |
1da177e4 LT |
2816 | #ifdef CCISS_DEBUG |
2817 | printk("command = %x\n", command); | |
2818 | printk("irq = %x\n", pdev->irq); | |
2819 | printk("board_id = %x\n", board_id); | |
7c832835 | 2820 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2821 | |
fb86a35b MM |
2822 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
2823 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
2824 | */ | |
2825 | cciss_interrupt_mode(c, pdev, board_id); | |
1da177e4 LT |
2826 | |
2827 | /* | |
2828 | * Memory base addr is first addr , the second points to the config | |
7c832835 | 2829 | * table |
1da177e4 LT |
2830 | */ |
2831 | ||
7c832835 | 2832 | c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */ |
1da177e4 LT |
2833 | #ifdef CCISS_DEBUG |
2834 | printk("address 0 = %x\n", c->paddr); | |
7c832835 | 2835 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
2836 | c->vaddr = remap_pci_mem(c->paddr, 200); |
2837 | ||
2838 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
2839 | * We poll for up to 120 secs, once per 100ms. */ | |
7c832835 | 2840 | for (i = 0; i < 1200; i++) { |
1da177e4 LT |
2841 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
2842 | if (scratchpad == CCISS_FIRMWARE_READY) | |
2843 | break; | |
2844 | set_current_state(TASK_INTERRUPTIBLE); | |
7c832835 | 2845 | schedule_timeout(HZ / 10); /* wait 100ms */ |
1da177e4 LT |
2846 | } |
2847 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
2848 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
c33ac89b | 2849 | err = -ENODEV; |
4e570309 | 2850 | goto err_out_free_res; |
1da177e4 LT |
2851 | } |
2852 | ||
2853 | /* get the address index number */ | |
2854 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
2855 | cfg_base_addr &= (__u32) 0x0000ffff; | |
2856 | #ifdef CCISS_DEBUG | |
2857 | printk("cfg base address = %x\n", cfg_base_addr); | |
7c832835 BH |
2858 | #endif /* CCISS_DEBUG */ |
2859 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); | |
1da177e4 LT |
2860 | #ifdef CCISS_DEBUG |
2861 | printk("cfg base address index = %x\n", cfg_base_addr_index); | |
7c832835 | 2862 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
2863 | if (cfg_base_addr_index == -1) { |
2864 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
c33ac89b | 2865 | err = -ENODEV; |
4e570309 | 2866 | goto err_out_free_res; |
1da177e4 LT |
2867 | } |
2868 | ||
2869 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
2870 | #ifdef CCISS_DEBUG | |
2871 | printk("cfg offset = %x\n", cfg_offset); | |
7c832835 BH |
2872 | #endif /* CCISS_DEBUG */ |
2873 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
2874 | cfg_base_addr_index) + | |
2875 | cfg_offset, sizeof(CfgTable_struct)); | |
1da177e4 LT |
2876 | c->board_id = board_id; |
2877 | ||
2878 | #ifdef CCISS_DEBUG | |
945f390f | 2879 | print_cfg_table(c->cfgtable); |
7c832835 | 2880 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2881 | |
7c832835 | 2882 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
1da177e4 LT |
2883 | if (board_id == products[i].board_id) { |
2884 | c->product_name = products[i].product_name; | |
2885 | c->access = *(products[i].access); | |
2886 | break; | |
2887 | } | |
2888 | } | |
5e8621e8 | 2889 | if (i == ARRAY_SIZE(products)) { |
1da177e4 | 2890 | printk(KERN_WARNING "cciss: Sorry, I don't know how" |
7c832835 BH |
2891 | " to access the Smart Array controller %08lx\n", |
2892 | (unsigned long)board_id); | |
c33ac89b | 2893 | err = -ENODEV; |
4e570309 | 2894 | goto err_out_free_res; |
1da177e4 | 2895 | } |
7c832835 BH |
2896 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
2897 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
2898 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
2899 | (readb(&c->cfgtable->Signature[3]) != 'S')) { | |
1da177e4 | 2900 | printk("Does not appear to be a valid CISS config table\n"); |
c33ac89b | 2901 | err = -ENODEV; |
4e570309 | 2902 | goto err_out_free_res; |
1da177e4 | 2903 | } |
1da177e4 | 2904 | #ifdef CONFIG_X86 |
7c832835 BH |
2905 | { |
2906 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
2907 | __u32 prefetch; | |
2908 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
2909 | prefetch |= 0x100; | |
2910 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
2911 | } | |
1da177e4 LT |
2912 | #endif |
2913 | ||
2914 | #ifdef CCISS_DEBUG | |
2915 | printk("Trying to put board into Simple mode\n"); | |
7c832835 | 2916 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2917 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
7c832835 BH |
2918 | /* Update the field, and then ring the doorbell */ |
2919 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); | |
2920 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); | |
1da177e4 LT |
2921 | |
2922 | /* under certain very rare conditions, this can take awhile. | |
2923 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
2924 | * as we enter this code.) */ | |
7c832835 | 2925 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
1da177e4 LT |
2926 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
2927 | break; | |
2928 | /* delay and try again */ | |
2929 | set_current_state(TASK_INTERRUPTIBLE); | |
2930 | schedule_timeout(10); | |
7c832835 | 2931 | } |
1da177e4 LT |
2932 | |
2933 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2934 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
2935 | readl(c->vaddr + SA5_DOORBELL)); | |
2936 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 2937 | #ifdef CCISS_DEBUG |
7c832835 BH |
2938 | print_cfg_table(c->cfgtable); |
2939 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 2940 | |
7c832835 | 2941 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
1da177e4 | 2942 | printk(KERN_WARNING "cciss: unable to get board into" |
7c832835 | 2943 | " simple mode\n"); |
c33ac89b | 2944 | err = -ENODEV; |
4e570309 | 2945 | goto err_out_free_res; |
1da177e4 LT |
2946 | } |
2947 | return 0; | |
2948 | ||
7c832835 | 2949 | err_out_free_res: |
4e570309 BH |
2950 | pci_release_regions(pdev); |
2951 | ||
7c832835 | 2952 | err_out_disable_pdev: |
c33ac89b BH |
2953 | pci_disable_device(pdev); |
2954 | return err; | |
1da177e4 LT |
2955 | } |
2956 | ||
7c832835 BH |
2957 | /* |
2958 | * Gets information about the local volumes attached to the controller. | |
2959 | */ | |
1da177e4 LT |
2960 | static void cciss_getgeometry(int cntl_num) |
2961 | { | |
2962 | ReportLunData_struct *ld_buff; | |
2963 | ReadCapdata_struct *size_buff; | |
2964 | InquiryData_struct *inq_buff; | |
2965 | int return_code; | |
2966 | int i; | |
2967 | int listlength = 0; | |
2968 | __u32 lunid = 0; | |
2969 | int block_size; | |
7c832835 | 2970 | int total_size; |
1da177e4 | 2971 | |
06ff37ff | 2972 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
7c832835 BH |
2973 | if (ld_buff == NULL) { |
2974 | printk(KERN_ERR "cciss: out of memory\n"); | |
2975 | return; | |
2976 | } | |
2977 | size_buff = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); | |
2978 | if (size_buff == NULL) { | |
1da177e4 | 2979 | printk(KERN_ERR "cciss: out of memory\n"); |
7c832835 | 2980 | kfree(ld_buff); |
1da177e4 LT |
2981 | return; |
2982 | } | |
7c832835 BH |
2983 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2984 | if (inq_buff == NULL) { | |
2985 | printk(KERN_ERR "cciss: out of memory\n"); | |
1da177e4 | 2986 | kfree(ld_buff); |
1da177e4 | 2987 | kfree(size_buff); |
7c832835 BH |
2988 | return; |
2989 | } | |
2990 | /* Get the firmware version */ | |
2991 | return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff, | |
2992 | sizeof(InquiryData_struct), 0, 0, 0, NULL, | |
2993 | TYPE_CMD); | |
2994 | if (return_code == IO_OK) { | |
1da177e4 LT |
2995 | hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32]; |
2996 | hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33]; | |
2997 | hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34]; | |
2998 | hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35]; | |
7c832835 BH |
2999 | } else { /* send command failed */ |
3000 | ||
1da177e4 | 3001 | printk(KERN_WARNING "cciss: unable to determine firmware" |
7c832835 | 3002 | " version of controller\n"); |
1da177e4 | 3003 | } |
7c832835 BH |
3004 | /* Get the number of logical volumes */ |
3005 | return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff, | |
3006 | sizeof(ReportLunData_struct), 0, 0, 0, NULL, | |
3007 | TYPE_CMD); | |
1da177e4 | 3008 | |
7c832835 | 3009 | if (return_code == IO_OK) { |
1da177e4 LT |
3010 | #ifdef CCISS_DEBUG |
3011 | printk("LUN Data\n--------------------------\n"); | |
7c832835 BH |
3012 | #endif /* CCISS_DEBUG */ |
3013 | ||
3014 | listlength |= | |
3015 | (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24; | |
3016 | listlength |= | |
3017 | (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16; | |
3018 | listlength |= | |
3019 | (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8; | |
1da177e4 | 3020 | listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]); |
7c832835 BH |
3021 | } else { /* reading number of logical volumes failed */ |
3022 | ||
1da177e4 | 3023 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 3024 | " command failed\n"); |
1da177e4 LT |
3025 | listlength = 0; |
3026 | } | |
7c832835 BH |
3027 | hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry |
3028 | if (hba[cntl_num]->num_luns > CISS_MAX_LUN) { | |
3029 | printk(KERN_ERR | |
3030 | "ciss: only %d number of logical volumes supported\n", | |
3031 | CISS_MAX_LUN); | |
1da177e4 LT |
3032 | hba[cntl_num]->num_luns = CISS_MAX_LUN; |
3033 | } | |
3034 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3035 | printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", |
3036 | ld_buff->LUNListLength[0], ld_buff->LUNListLength[1], | |
3037 | ld_buff->LUNListLength[2], ld_buff->LUNListLength[3], | |
3038 | hba[cntl_num]->num_luns); | |
3039 | #endif /* CCISS_DEBUG */ | |
3040 | ||
3041 | hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns - 1; | |
3042 | // for(i=0; i< hba[cntl_num]->num_luns; i++) | |
3043 | for (i = 0; i < CISS_MAX_LUN; i++) { | |
3044 | if (i < hba[cntl_num]->num_luns) { | |
3045 | lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) | |
3046 | << 24; | |
3047 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) | |
3048 | << 16; | |
3049 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) | |
3050 | << 8; | |
3051 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
3052 | ||
3053 | hba[cntl_num]->drv[i].LunID = lunid; | |
1da177e4 LT |
3054 | |
3055 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3056 | printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i, |
3057 | ld_buff->LUN[i][0], ld_buff->LUN[i][1], | |
3058 | ld_buff->LUN[i][2], ld_buff->LUN[i][3], | |
3059 | hba[cntl_num]->drv[i].LunID); | |
3060 | #endif /* CCISS_DEBUG */ | |
3061 | cciss_read_capacity(cntl_num, i, size_buff, 0, | |
3062 | &total_size, &block_size); | |
ddd47442 | 3063 | cciss_geometry_inquiry(cntl_num, i, 0, total_size, |
7c832835 BH |
3064 | block_size, inq_buff, |
3065 | &hba[cntl_num]->drv[i]); | |
ddd47442 MM |
3066 | } else { |
3067 | /* initialize raid_level to indicate a free space */ | |
3068 | hba[cntl_num]->drv[i].raid_level = -1; | |
3069 | } | |
1da177e4 LT |
3070 | } |
3071 | kfree(ld_buff); | |
3072 | kfree(size_buff); | |
3073 | kfree(inq_buff); | |
7c832835 | 3074 | } |
1da177e4 LT |
3075 | |
3076 | /* Function to find the first free pointer into our hba[] array */ | |
3077 | /* Returns -1 if no free entries are left. */ | |
3078 | static int alloc_cciss_hba(void) | |
3079 | { | |
3080 | struct gendisk *disk[NWD]; | |
3081 | int i, n; | |
3082 | for (n = 0; n < NWD; n++) { | |
3083 | disk[n] = alloc_disk(1 << NWD_SHIFT); | |
3084 | if (!disk[n]) | |
3085 | goto out; | |
3086 | } | |
3087 | ||
7c832835 | 3088 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
3089 | if (!hba[i]) { |
3090 | ctlr_info_t *p; | |
06ff37ff | 3091 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
3092 | if (!p) |
3093 | goto Enomem; | |
1da177e4 LT |
3094 | for (n = 0; n < NWD; n++) |
3095 | p->gendisk[n] = disk[n]; | |
3096 | hba[i] = p; | |
3097 | return i; | |
3098 | } | |
3099 | } | |
3100 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 3101 | " of %d controllers.\n", MAX_CTLR); |
1da177e4 | 3102 | goto out; |
7c832835 | 3103 | Enomem: |
1da177e4 | 3104 | printk(KERN_ERR "cciss: out of memory.\n"); |
7c832835 | 3105 | out: |
1da177e4 LT |
3106 | while (n--) |
3107 | put_disk(disk[n]); | |
3108 | return -1; | |
3109 | } | |
3110 | ||
3111 | static void free_hba(int i) | |
3112 | { | |
3113 | ctlr_info_t *p = hba[i]; | |
3114 | int n; | |
3115 | ||
3116 | hba[i] = NULL; | |
3117 | for (n = 0; n < NWD; n++) | |
3118 | put_disk(p->gendisk[n]); | |
3119 | kfree(p); | |
3120 | } | |
3121 | ||
3122 | /* | |
3123 | * This is it. Find all the controllers and register them. I really hate | |
3124 | * stealing all these major device numbers. | |
3125 | * returns the number of block devices registered. | |
3126 | */ | |
3127 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 3128 | const struct pci_device_id *ent) |
1da177e4 LT |
3129 | { |
3130 | request_queue_t *q; | |
3131 | int i; | |
3132 | int j; | |
3133 | int rc; | |
40aabb58 | 3134 | int dac; |
1da177e4 | 3135 | |
1da177e4 | 3136 | i = alloc_cciss_hba(); |
7c832835 | 3137 | if (i < 0) |
e2019b58 | 3138 | return -1; |
1f8ef380 MM |
3139 | |
3140 | hba[i]->busy_initializing = 1; | |
3141 | ||
1da177e4 LT |
3142 | if (cciss_pci_init(hba[i], pdev) != 0) |
3143 | goto clean1; | |
3144 | ||
3145 | sprintf(hba[i]->devname, "cciss%d", i); | |
3146 | hba[i]->ctlr = i; | |
3147 | hba[i]->pdev = pdev; | |
3148 | ||
3149 | /* configure PCI DMA stuff */ | |
eb0df996 | 3150 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) |
40aabb58 | 3151 | dac = 1; |
eb0df996 | 3152 | else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) |
40aabb58 | 3153 | dac = 0; |
1da177e4 | 3154 | else { |
40aabb58 | 3155 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
3156 | goto clean1; |
3157 | } | |
3158 | ||
3159 | /* | |
3160 | * register with the major number, or get a dynamic major number | |
3161 | * by passing 0 as argument. This is done for greater than | |
3162 | * 8 controller support. | |
3163 | */ | |
3164 | if (i < MAX_CTLR_ORIG) | |
564de74a | 3165 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 3166 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3167 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 3168 | printk(KERN_ERR |
7c832835 BH |
3169 | "cciss: Unable to get major number %d for %s " |
3170 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 3171 | goto clean1; |
7c832835 | 3172 | } else { |
1da177e4 LT |
3173 | if (i >= MAX_CTLR_ORIG) |
3174 | hba[i]->major = rc; | |
3175 | } | |
3176 | ||
3177 | /* make sure the board interrupts are off */ | |
3178 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
7c832835 BH |
3179 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
3180 | SA_INTERRUPT | SA_SHIRQ, hba[i]->devname, hba[i])) { | |
1da177e4 | 3181 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
7c832835 | 3182 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
1da177e4 LT |
3183 | goto clean2; |
3184 | } | |
40aabb58 BH |
3185 | |
3186 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 BH |
3187 | hba[i]->devname, pdev->device, pci_name(pdev), |
3188 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); | |
3189 | ||
3190 | hba[i]->cmd_pool_bits = | |
3191 | kmalloc(((NR_CMDS + BITS_PER_LONG - | |
3192 | 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL); | |
3193 | hba[i]->cmd_pool = (CommandList_struct *) | |
3194 | pci_alloc_consistent(hba[i]->pdev, | |
3195 | NR_CMDS * sizeof(CommandList_struct), | |
3196 | &(hba[i]->cmd_pool_dhandle)); | |
3197 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
3198 | pci_alloc_consistent(hba[i]->pdev, | |
3199 | NR_CMDS * sizeof(ErrorInfo_struct), | |
3200 | &(hba[i]->errinfo_pool_dhandle)); | |
3201 | if ((hba[i]->cmd_pool_bits == NULL) | |
3202 | || (hba[i]->cmd_pool == NULL) | |
3203 | || (hba[i]->errinfo_pool == NULL)) { | |
3204 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
3205 | goto clean4; |
3206 | } | |
3da8b713 | 3207 | #ifdef CONFIG_CISS_SCSI_TAPE |
7c832835 BH |
3208 | hba[i]->scsi_rejects.complete = |
3209 | kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) * | |
3210 | (NR_CMDS + 5), GFP_KERNEL); | |
3da8b713 | 3211 | if (hba[i]->scsi_rejects.complete == NULL) { |
7c832835 | 3212 | printk(KERN_ERR "cciss: out of memory"); |
3da8b713 | 3213 | goto clean4; |
3214 | } | |
3215 | #endif | |
1da177e4 | 3216 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 3217 | |
7c832835 BH |
3218 | /* Initialize the pdev driver private data. |
3219 | have it point to hba[i]. */ | |
1da177e4 | 3220 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
3221 | /* command and error info recs zeroed out before |
3222 | they are used */ | |
3223 | memset(hba[i]->cmd_pool_bits, 0, | |
3224 | ((NR_CMDS + BITS_PER_LONG - | |
3225 | 1) / BITS_PER_LONG) * sizeof(unsigned long)); | |
1da177e4 | 3226 | |
7c832835 BH |
3227 | #ifdef CCISS_DEBUG |
3228 | printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n", i); | |
3229 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
3230 | |
3231 | cciss_getgeometry(i); | |
3232 | ||
3233 | cciss_scsi_setup(i); | |
3234 | ||
3235 | /* Turn the interrupts on so we can service requests */ | |
3236 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
3237 | ||
3238 | cciss_procinit(i); | |
d6dbf42e | 3239 | hba[i]->busy_initializing = 0; |
1da177e4 | 3240 | |
7c832835 | 3241 | for (j = 0; j < NWD; j++) { /* mfm */ |
ad2b9312 MM |
3242 | drive_info_struct *drv = &(hba[i]->drv[j]); |
3243 | struct gendisk *disk = hba[i]->gendisk[j]; | |
3244 | ||
3245 | q = blk_init_queue(do_cciss_request, &hba[i]->lock); | |
3246 | if (!q) { | |
3247 | printk(KERN_ERR | |
7c832835 BH |
3248 | "cciss: unable to allocate queue for disk %d\n", |
3249 | j); | |
ad2b9312 MM |
3250 | break; |
3251 | } | |
3252 | drv->queue = q; | |
3253 | ||
3254 | q->backing_dev_info.ra_pages = READ_AHEAD; | |
a9925a06 JA |
3255 | blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask); |
3256 | ||
3257 | /* This is a hardware imposed limit. */ | |
3258 | blk_queue_max_hw_segments(q, MAXSGENTRIES); | |
1da177e4 | 3259 | |
a9925a06 JA |
3260 | /* This is a limit in the driver and could be eliminated. */ |
3261 | blk_queue_max_phys_segments(q, MAXSGENTRIES); | |
1da177e4 | 3262 | |
a9925a06 | 3263 | blk_queue_max_sectors(q, 512); |
1da177e4 | 3264 | |
a9925a06 | 3265 | blk_queue_softirq_done(q, cciss_softirq_done); |
1da177e4 | 3266 | |
ad2b9312 | 3267 | q->queuedata = hba[i]; |
1da177e4 LT |
3268 | sprintf(disk->disk_name, "cciss/c%dd%d", i, j); |
3269 | sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j); | |
3270 | disk->major = hba[i]->major; | |
3271 | disk->first_minor = j << NWD_SHIFT; | |
3272 | disk->fops = &cciss_fops; | |
ad2b9312 | 3273 | disk->queue = q; |
1da177e4 | 3274 | disk->private_data = drv; |
27c0ff86 | 3275 | disk->driverfs_dev = &pdev->dev; |
1da177e4 LT |
3276 | /* we must register the controller even if no disks exist */ |
3277 | /* this is for the online array utilities */ | |
7c832835 | 3278 | if (!drv->heads && j) |
1da177e4 | 3279 | continue; |
ad2b9312 | 3280 | blk_queue_hardsect_size(q, drv->block_size); |
1da177e4 LT |
3281 | set_capacity(disk, drv->nr_blocks); |
3282 | add_disk(disk); | |
3283 | } | |
ad2b9312 | 3284 | |
e2019b58 | 3285 | return 1; |
1da177e4 | 3286 | |
7c832835 | 3287 | clean4: |
3da8b713 | 3288 | #ifdef CONFIG_CISS_SCSI_TAPE |
1acc0b0b | 3289 | kfree(hba[i]->scsi_rejects.complete); |
3da8b713 | 3290 | #endif |
6044ec88 | 3291 | kfree(hba[i]->cmd_pool_bits); |
7c832835 | 3292 | if (hba[i]->cmd_pool) |
1da177e4 | 3293 | pci_free_consistent(hba[i]->pdev, |
7c832835 BH |
3294 | NR_CMDS * sizeof(CommandList_struct), |
3295 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); | |
3296 | if (hba[i]->errinfo_pool) | |
1da177e4 | 3297 | pci_free_consistent(hba[i]->pdev, |
7c832835 BH |
3298 | NR_CMDS * sizeof(ErrorInfo_struct), |
3299 | hba[i]->errinfo_pool, | |
3300 | hba[i]->errinfo_pool_dhandle); | |
fb86a35b | 3301 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
7c832835 | 3302 | clean2: |
1da177e4 | 3303 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3304 | clean1: |
1f8ef380 | 3305 | hba[i]->busy_initializing = 0; |
61808c2b | 3306 | free_hba(i); |
e2019b58 | 3307 | return -1; |
1da177e4 LT |
3308 | } |
3309 | ||
7c832835 | 3310 | static void __devexit cciss_remove_one(struct pci_dev *pdev) |
1da177e4 LT |
3311 | { |
3312 | ctlr_info_t *tmp_ptr; | |
3313 | int i, j; | |
3314 | char flush_buf[4]; | |
7c832835 | 3315 | int return_code; |
1da177e4 | 3316 | |
7c832835 BH |
3317 | if (pci_get_drvdata(pdev) == NULL) { |
3318 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
3319 | return; |
3320 | } | |
3321 | tmp_ptr = pci_get_drvdata(pdev); | |
3322 | i = tmp_ptr->ctlr; | |
7c832835 | 3323 | if (hba[i] == NULL) { |
1da177e4 | 3324 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 3325 | "already be removed \n"); |
1da177e4 LT |
3326 | return; |
3327 | } | |
3328 | /* Turn board interrupts off and send the flush cache command */ | |
3329 | /* sendcmd will turn off interrupt, and send the flush... | |
7c832835 | 3330 | * To write all data in the battery backed cache to disks */ |
1da177e4 LT |
3331 | memset(flush_buf, 0, 4); |
3332 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL, | |
7c832835 BH |
3333 | TYPE_CMD); |
3334 | if (return_code != IO_OK) { | |
3335 | printk(KERN_WARNING "Error Flushing cache on controller %d\n", | |
3336 | i); | |
1da177e4 | 3337 | } |
fb86a35b MM |
3338 | free_irq(hba[i]->intr[2], hba[i]); |
3339 | ||
3340 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3341 | if (hba[i]->msix_vector) |
3342 | pci_disable_msix(hba[i]->pdev); | |
3343 | else if (hba[i]->msi_vector) | |
3344 | pci_disable_msi(hba[i]->pdev); | |
3345 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 3346 | |
1da177e4 | 3347 | iounmap(hba[i]->vaddr); |
7c832835 | 3348 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
1da177e4 | 3349 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 BH |
3350 | remove_proc_entry(hba[i]->devname, proc_cciss); |
3351 | ||
1da177e4 LT |
3352 | /* remove it from the disk list */ |
3353 | for (j = 0; j < NWD; j++) { | |
3354 | struct gendisk *disk = hba[i]->gendisk[j]; | |
6f5a0f7c | 3355 | if (disk) { |
3356 | request_queue_t *q = disk->queue; | |
3357 | ||
7c832835 | 3358 | if (disk->flags & GENHD_FL_UP) |
6f5a0f7c | 3359 | del_gendisk(disk); |
3360 | if (q) | |
3361 | blk_cleanup_queue(q); | |
6a445d3b | 3362 | } |
1da177e4 LT |
3363 | } |
3364 | ||
1da177e4 LT |
3365 | pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct), |
3366 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); | |
7c832835 BH |
3367 | pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(ErrorInfo_struct), |
3368 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); | |
1da177e4 | 3369 | kfree(hba[i]->cmd_pool_bits); |
3da8b713 | 3370 | #ifdef CONFIG_CISS_SCSI_TAPE |
3371 | kfree(hba[i]->scsi_rejects.complete); | |
3372 | #endif | |
7c832835 | 3373 | pci_release_regions(pdev); |
4e570309 BH |
3374 | pci_disable_device(pdev); |
3375 | pci_set_drvdata(pdev, NULL); | |
1da177e4 | 3376 | free_hba(i); |
7c832835 | 3377 | } |
1da177e4 LT |
3378 | |
3379 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
3380 | .name = "cciss", |
3381 | .probe = cciss_init_one, | |
3382 | .remove = __devexit_p(cciss_remove_one), | |
3383 | .id_table = cciss_pci_device_id, /* id_table */ | |
1da177e4 LT |
3384 | }; |
3385 | ||
3386 | /* | |
3387 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 3388 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
3389 | */ |
3390 | static int __init cciss_init(void) | |
3391 | { | |
3392 | printk(KERN_INFO DRIVER_NAME "\n"); | |
3393 | ||
3394 | /* Register for our PCI devices */ | |
9bfab8ce | 3395 | return pci_register_driver(&cciss_pci_driver); |
1da177e4 LT |
3396 | } |
3397 | ||
3398 | static void __exit cciss_cleanup(void) | |
3399 | { | |
3400 | int i; | |
3401 | ||
3402 | pci_unregister_driver(&cciss_pci_driver); | |
3403 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
3404 | for (i = 0; i < MAX_CTLR; i++) { |
3405 | if (hba[i] != NULL) { | |
1da177e4 | 3406 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 3407 | " controller %d\n", i); |
1da177e4 LT |
3408 | cciss_remove_one(hba[i]->pdev); |
3409 | } | |
3410 | } | |
3411 | remove_proc_entry("cciss", proc_root_driver); | |
3412 | } | |
3413 | ||
33079b21 MM |
3414 | static void fail_all_cmds(unsigned long ctlr) |
3415 | { | |
3416 | /* If we get here, the board is apparently dead. */ | |
3417 | ctlr_info_t *h = hba[ctlr]; | |
3418 | CommandList_struct *c; | |
3419 | unsigned long flags; | |
3420 | ||
3421 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); | |
7c832835 | 3422 | h->alive = 0; /* the controller apparently died... */ |
33079b21 MM |
3423 | |
3424 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
3425 | ||
7c832835 | 3426 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
33079b21 MM |
3427 | |
3428 | /* move everything off the request queue onto the completed queue */ | |
7c832835 | 3429 | while ((c = h->reqQ) != NULL) { |
33079b21 MM |
3430 | removeQ(&(h->reqQ), c); |
3431 | h->Qdepth--; | |
7c832835 | 3432 | addQ(&(h->cmpQ), c); |
33079b21 MM |
3433 | } |
3434 | ||
3435 | /* Now, fail everything on the completed queue with a HW error */ | |
7c832835 | 3436 | while ((c = h->cmpQ) != NULL) { |
33079b21 MM |
3437 | removeQ(&h->cmpQ, c); |
3438 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
3439 | if (c->cmd_type == CMD_RWREQ) { | |
3440 | complete_command(h, c, 0); | |
3441 | } else if (c->cmd_type == CMD_IOCTL_PEND) | |
3442 | complete(c->waiting); | |
3443 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
3444 | else if (c->cmd_type == CMD_SCSI) |
3445 | complete_scsi_command(c, 0, 0); | |
33079b21 MM |
3446 | #endif |
3447 | } | |
3448 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
3449 | return; | |
3450 | } | |
3451 | ||
1da177e4 LT |
3452 | module_init(cciss_init); |
3453 | module_exit(cciss_cleanup); |