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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Disk Array driver for HP SA 5xxx and 6xxx Controllers | |
fb86a35b | 3 | * Copyright 2000, 2006 Hewlett-Packard Development Company, L.P. |
1da177e4 LT |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
13 | * NON INFRINGEMENT. See the GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | * | |
19 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com | |
20 | * | |
21 | */ | |
22 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/types.h> | |
26 | #include <linux/pci.h> | |
27 | #include <linux/kernel.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/major.h> | |
31 | #include <linux/fs.h> | |
32 | #include <linux/bio.h> | |
33 | #include <linux/blkpg.h> | |
34 | #include <linux/timer.h> | |
35 | #include <linux/proc_fs.h> | |
7c832835 | 36 | #include <linux/init.h> |
1da177e4 LT |
37 | #include <linux/hdreg.h> |
38 | #include <linux/spinlock.h> | |
39 | #include <linux/compat.h> | |
2056a782 | 40 | #include <linux/blktrace_api.h> |
1da177e4 LT |
41 | #include <asm/uaccess.h> |
42 | #include <asm/io.h> | |
43 | ||
eb0df996 | 44 | #include <linux/dma-mapping.h> |
1da177e4 LT |
45 | #include <linux/blkdev.h> |
46 | #include <linux/genhd.h> | |
47 | #include <linux/completion.h> | |
48 | ||
49 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) | |
9d827c9e MM |
50 | #define DRIVER_NAME "HP CISS Driver (v 3.6.14)" |
51 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3,6,14) | |
1da177e4 LT |
52 | |
53 | /* Embedded module documentation macros - see modules.h */ | |
54 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
9d827c9e | 55 | MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 3.6.14"); |
1da177e4 | 56 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
1883c5ab | 57 | " SA6i P600 P800 P400 P400i E200 E200i E500"); |
9d827c9e | 58 | MODULE_VERSION("3.6.14"); |
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[] = { | |
f82ccdb9 BH |
67 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
68 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, | |
69 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, | |
70 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, | |
71 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, | |
72 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, | |
73 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, | |
74 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, | |
75 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, | |
76 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, | |
77 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, | |
78 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, | |
79 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, | |
80 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, | |
81 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, | |
82 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, | |
83 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, | |
84 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, | |
de923916 | 85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, |
4ff9a9a4 MM |
86 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
87 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, | |
1da177e4 LT |
88 | {0,} |
89 | }; | |
7c832835 | 90 | |
1da177e4 LT |
91 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
92 | ||
1da177e4 LT |
93 | /* board_id = Subsystem Device ID & Vendor ID |
94 | * product = Marketing Name for the board | |
7c832835 | 95 | * access = Address of the struct of function pointers |
f880632f | 96 | * nr_cmds = Number of commands supported by controller |
1da177e4 LT |
97 | */ |
98 | static struct board_type products[] = { | |
f880632f MM |
99 | {0x40700E11, "Smart Array 5300", &SA5_access, 512}, |
100 | {0x40800E11, "Smart Array 5i", &SA5B_access, 512}, | |
101 | {0x40820E11, "Smart Array 532", &SA5B_access, 512}, | |
102 | {0x40830E11, "Smart Array 5312", &SA5B_access, 512}, | |
103 | {0x409A0E11, "Smart Array 641", &SA5_access, 512}, | |
104 | {0x409B0E11, "Smart Array 642", &SA5_access, 512}, | |
105 | {0x409C0E11, "Smart Array 6400", &SA5_access, 512}, | |
106 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access, 512}, | |
107 | {0x40910E11, "Smart Array 6i", &SA5_access, 512}, | |
108 | {0x3225103C, "Smart Array P600", &SA5_access, 512}, | |
109 | {0x3223103C, "Smart Array P800", &SA5_access, 512}, | |
110 | {0x3234103C, "Smart Array P400", &SA5_access, 512}, | |
111 | {0x3235103C, "Smart Array P400i", &SA5_access, 512}, | |
112 | {0x3211103C, "Smart Array E200i", &SA5_access, 120}, | |
113 | {0x3212103C, "Smart Array E200", &SA5_access, 120}, | |
114 | {0x3213103C, "Smart Array E200i", &SA5_access, 120}, | |
115 | {0x3214103C, "Smart Array E200i", &SA5_access, 120}, | |
116 | {0x3215103C, "Smart Array E200i", &SA5_access, 120}, | |
de923916 | 117 | {0x3237103C, "Smart Array E500", &SA5_access, 512}, |
f880632f | 118 | {0xFFFF103C, "Unknown Smart Array", &SA5_access, 120}, |
1da177e4 LT |
119 | }; |
120 | ||
d14c4ab5 | 121 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
7c832835 | 122 | #define MAX_CONFIG_WAIT 30000 |
1da177e4 LT |
123 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
124 | ||
125 | /*define how many times we will try a command because of bus resets */ | |
126 | #define MAX_CMD_RETRIES 3 | |
127 | ||
128 | #define READ_AHEAD 1024 | |
1da177e4 LT |
129 | #define MAX_CTLR 32 |
130 | ||
131 | /* Originally cciss driver only supports 8 major numbers */ | |
132 | #define MAX_CTLR_ORIG 8 | |
133 | ||
1da177e4 LT |
134 | static ctlr_info_t *hba[MAX_CTLR]; |
135 | ||
136 | static void do_cciss_request(request_queue_t *q); | |
7d12e780 | 137 | static irqreturn_t do_cciss_intr(int irq, void *dev_id); |
1da177e4 LT |
138 | static int cciss_open(struct inode *inode, struct file *filep); |
139 | static int cciss_release(struct inode *inode, struct file *filep); | |
7c832835 BH |
140 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
141 | unsigned int cmd, unsigned long arg); | |
a885c8c4 | 142 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 LT |
143 | |
144 | static int revalidate_allvol(ctlr_info_t *host); | |
145 | static int cciss_revalidate(struct gendisk *disk); | |
ddd47442 | 146 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk); |
7c832835 BH |
147 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, |
148 | int clear_all); | |
1da177e4 | 149 | |
00988a35 MMOD |
150 | static void cciss_read_capacity(int ctlr, int logvol, int withirq, |
151 | sector_t *total_size, unsigned int *block_size); | |
152 | static void cciss_read_capacity_16(int ctlr, int logvol, int withirq, | |
153 | sector_t *total_size, unsigned int *block_size); | |
154 | static void cciss_geometry_inquiry(int ctlr, int logvol, | |
155 | int withirq, sector_t total_size, | |
156 | unsigned int block_size, InquiryData_struct *inq_buff, | |
7c832835 | 157 | drive_info_struct *drv); |
1da177e4 | 158 | static void cciss_getgeometry(int cntl_num); |
7c832835 BH |
159 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
160 | __u32); | |
161 | static void start_io(ctlr_info_t *h); | |
162 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, | |
163 | unsigned int use_unit_num, unsigned int log_unit, | |
164 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); | |
165 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, | |
166 | unsigned int use_unit_num, unsigned int log_unit, | |
167 | __u8 page_code, int cmd_type); | |
1da177e4 | 168 | |
33079b21 MM |
169 | static void fail_all_cmds(unsigned long ctlr); |
170 | ||
1da177e4 | 171 | #ifdef CONFIG_PROC_FS |
7c832835 BH |
172 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
173 | int length, int *eof, void *data); | |
1da177e4 LT |
174 | static void cciss_procinit(int i); |
175 | #else | |
7c832835 BH |
176 | static void cciss_procinit(int i) |
177 | { | |
178 | } | |
179 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
180 | |
181 | #ifdef CONFIG_COMPAT | |
182 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg); | |
183 | #endif | |
184 | ||
7c832835 BH |
185 | static struct block_device_operations cciss_fops = { |
186 | .owner = THIS_MODULE, | |
187 | .open = cciss_open, | |
188 | .release = cciss_release, | |
189 | .ioctl = cciss_ioctl, | |
190 | .getgeo = cciss_getgeo, | |
1da177e4 | 191 | #ifdef CONFIG_COMPAT |
7c832835 | 192 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 193 | #endif |
7c832835 | 194 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
195 | }; |
196 | ||
197 | /* | |
198 | * Enqueuing and dequeuing functions for cmdlists. | |
199 | */ | |
200 | static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c) | |
201 | { | |
7c832835 BH |
202 | if (*Qptr == NULL) { |
203 | *Qptr = c; | |
204 | c->next = c->prev = c; | |
205 | } else { | |
206 | c->prev = (*Qptr)->prev; | |
207 | c->next = (*Qptr); | |
208 | (*Qptr)->prev->next = c; | |
209 | (*Qptr)->prev = c; | |
210 | } | |
1da177e4 LT |
211 | } |
212 | ||
7c832835 BH |
213 | static inline CommandList_struct *removeQ(CommandList_struct **Qptr, |
214 | CommandList_struct *c) | |
1da177e4 | 215 | { |
7c832835 BH |
216 | if (c && c->next != c) { |
217 | if (*Qptr == c) | |
218 | *Qptr = c->next; | |
219 | c->prev->next = c->next; | |
220 | c->next->prev = c->prev; | |
221 | } else { | |
222 | *Qptr = NULL; | |
223 | } | |
224 | return c; | |
1da177e4 LT |
225 | } |
226 | ||
227 | #include "cciss_scsi.c" /* For SCSI tape support */ | |
228 | ||
229 | #ifdef CONFIG_PROC_FS | |
230 | ||
231 | /* | |
232 | * Report information about this controller. | |
233 | */ | |
234 | #define ENG_GIG 1000000000 | |
235 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
236 | #define RAID_UNKNOWN 6 | |
7c832835 BH |
237 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
238 | "UNKNOWN" | |
239 | }; | |
1da177e4 LT |
240 | |
241 | static struct proc_dir_entry *proc_cciss; | |
242 | ||
7c832835 BH |
243 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
244 | int length, int *eof, void *data) | |
1da177e4 | 245 | { |
7c832835 BH |
246 | off_t pos = 0; |
247 | off_t len = 0; | |
248 | int size, i, ctlr; | |
249 | ctlr_info_t *h = (ctlr_info_t *) data; | |
250 | drive_info_struct *drv; | |
1da177e4 | 251 | unsigned long flags; |
7c832835 | 252 | sector_t vol_sz, vol_sz_frac; |
1da177e4 | 253 | |
7c832835 | 254 | ctlr = h->ctlr; |
1da177e4 LT |
255 | |
256 | /* prevent displaying bogus info during configuration | |
257 | * or deconfiguration of a logical volume | |
258 | */ | |
259 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
260 | if (h->busy_configuring) { | |
261 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 262 | return -EBUSY; |
1da177e4 LT |
263 | } |
264 | h->busy_configuring = 1; | |
265 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
266 | ||
7c832835 BH |
267 | size = sprintf(buffer, "%s: HP %s Controller\n" |
268 | "Board ID: 0x%08lx\n" | |
269 | "Firmware Version: %c%c%c%c\n" | |
270 | "IRQ: %d\n" | |
271 | "Logical drives: %d\n" | |
272 | "Current Q depth: %d\n" | |
273 | "Current # commands on controller: %d\n" | |
274 | "Max Q depth since init: %d\n" | |
275 | "Max # commands on controller since init: %d\n" | |
276 | "Max SG entries since init: %d\n\n", | |
277 | h->devname, | |
278 | h->product_name, | |
279 | (unsigned long)h->board_id, | |
280 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
281 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], | |
282 | h->num_luns, h->Qdepth, h->commands_outstanding, | |
283 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
284 | ||
285 | pos += size; | |
286 | len += size; | |
1da177e4 | 287 | cciss_proc_tape_report(ctlr, buffer, &pos, &len); |
7c832835 | 288 | for (i = 0; i <= h->highest_lun; i++) { |
1da177e4 | 289 | |
7c832835 | 290 | drv = &h->drv[i]; |
ddd47442 | 291 | if (drv->heads == 0) |
1da177e4 LT |
292 | continue; |
293 | ||
294 | vol_sz = drv->nr_blocks; | |
295 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
296 | vol_sz_frac *= 100; | |
297 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
298 | ||
299 | if (drv->raid_level > 5) | |
300 | drv->raid_level = RAID_UNKNOWN; | |
7c832835 BH |
301 | size = sprintf(buffer + len, "cciss/c%dd%d:" |
302 | "\t%4u.%02uGB\tRAID %s\n", | |
303 | ctlr, i, (int)vol_sz, (int)vol_sz_frac, | |
304 | raid_label[drv->raid_level]); | |
305 | pos += size; | |
306 | len += size; | |
307 | } | |
308 | ||
309 | *eof = 1; | |
310 | *start = buffer + offset; | |
311 | len -= offset; | |
312 | if (len > length) | |
313 | len = length; | |
1da177e4 | 314 | h->busy_configuring = 0; |
7c832835 | 315 | return len; |
1da177e4 LT |
316 | } |
317 | ||
7c832835 BH |
318 | static int |
319 | cciss_proc_write(struct file *file, const char __user *buffer, | |
320 | unsigned long count, void *data) | |
1da177e4 LT |
321 | { |
322 | unsigned char cmd[80]; | |
323 | int len; | |
324 | #ifdef CONFIG_CISS_SCSI_TAPE | |
325 | ctlr_info_t *h = (ctlr_info_t *) data; | |
326 | int rc; | |
327 | #endif | |
328 | ||
7c832835 BH |
329 | if (count > sizeof(cmd) - 1) |
330 | return -EINVAL; | |
331 | if (copy_from_user(cmd, buffer, count)) | |
332 | return -EFAULT; | |
1da177e4 LT |
333 | cmd[count] = '\0'; |
334 | len = strlen(cmd); // above 3 lines ensure safety | |
7c832835 | 335 | if (len && cmd[len - 1] == '\n') |
1da177e4 LT |
336 | cmd[--len] = '\0'; |
337 | # ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
338 | if (strcmp("engage scsi", cmd) == 0) { |
339 | rc = cciss_engage_scsi(h->ctlr); | |
340 | if (rc != 0) | |
341 | return -rc; | |
342 | return count; | |
343 | } | |
344 | /* might be nice to have "disengage" too, but it's not | |
345 | safely possible. (only 1 module use count, lock issues.) */ | |
1da177e4 LT |
346 | # endif |
347 | return -EINVAL; | |
348 | } | |
349 | ||
350 | /* | |
351 | * Get us a file in /proc/cciss that says something about each controller. | |
352 | * Create /proc/cciss if it doesn't exist yet. | |
353 | */ | |
354 | static void __devinit cciss_procinit(int i) | |
355 | { | |
356 | struct proc_dir_entry *pde; | |
357 | ||
7c832835 BH |
358 | if (proc_cciss == NULL) { |
359 | proc_cciss = proc_mkdir("cciss", proc_root_driver); | |
360 | if (!proc_cciss) | |
1da177e4 | 361 | return; |
7c832835 | 362 | } |
1da177e4 | 363 | |
7c832835 BH |
364 | pde = create_proc_read_entry(hba[i]->devname, |
365 | S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH, | |
366 | proc_cciss, cciss_proc_get_info, hba[i]); | |
1da177e4 LT |
367 | pde->write_proc = cciss_proc_write; |
368 | } | |
7c832835 | 369 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 370 | |
7c832835 BH |
371 | /* |
372 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 373 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
374 | * which ones are free or in use. For operations that can wait for kmalloc |
375 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
376 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
377 | */ | |
378 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
379 | { |
380 | CommandList_struct *c; | |
7c832835 | 381 | int i; |
1da177e4 LT |
382 | u64bit temp64; |
383 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
384 | ||
7c832835 BH |
385 | if (!get_from_pool) { |
386 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
387 | sizeof(CommandList_struct), &cmd_dma_handle); | |
388 | if (c == NULL) | |
389 | return NULL; | |
1da177e4 LT |
390 | memset(c, 0, sizeof(CommandList_struct)); |
391 | ||
33079b21 MM |
392 | c->cmdindex = -1; |
393 | ||
7c832835 BH |
394 | c->err_info = (ErrorInfo_struct *) |
395 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
396 | &err_dma_handle); | |
397 | ||
398 | if (c->err_info == NULL) { | |
399 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
400 | sizeof(CommandList_struct), c, cmd_dma_handle); |
401 | return NULL; | |
402 | } | |
403 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
404 | } else { /* get it out of the controllers pool */ |
405 | ||
406 | do { | |
f880632f MM |
407 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
408 | if (i == h->nr_cmds) | |
7c832835 BH |
409 | return NULL; |
410 | } while (test_and_set_bit | |
411 | (i & (BITS_PER_LONG - 1), | |
412 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
413 | #ifdef CCISS_DEBUG |
414 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
415 | #endif | |
7c832835 | 416 | c = h->cmd_pool + i; |
1da177e4 | 417 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
418 | cmd_dma_handle = h->cmd_pool_dhandle |
419 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
420 | c->err_info = h->errinfo_pool + i; |
421 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
422 | err_dma_handle = h->errinfo_pool_dhandle |
423 | + i * sizeof(ErrorInfo_struct); | |
424 | h->nr_allocs++; | |
33079b21 MM |
425 | |
426 | c->cmdindex = i; | |
7c832835 | 427 | } |
1da177e4 LT |
428 | |
429 | c->busaddr = (__u32) cmd_dma_handle; | |
7c832835 | 430 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
431 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
432 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
433 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 434 | |
7c832835 BH |
435 | c->ctlr = h->ctlr; |
436 | return c; | |
1da177e4 LT |
437 | } |
438 | ||
7c832835 BH |
439 | /* |
440 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
441 | */ |
442 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
443 | { | |
444 | int i; | |
445 | u64bit temp64; | |
446 | ||
7c832835 | 447 | if (!got_from_pool) { |
1da177e4 LT |
448 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
449 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
450 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
451 | c->err_info, (dma_addr_t) temp64.val); | |
452 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
453 | c, (dma_addr_t) c->busaddr); | |
454 | } else { | |
1da177e4 | 455 | i = c - h->cmd_pool; |
7c832835 BH |
456 | clear_bit(i & (BITS_PER_LONG - 1), |
457 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
458 | h->nr_frees++; | |
459 | } | |
1da177e4 LT |
460 | } |
461 | ||
462 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
463 | { | |
7c832835 | 464 | return disk->queue->queuedata; |
1da177e4 LT |
465 | } |
466 | ||
467 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
468 | { | |
469 | return disk->private_data; | |
470 | } | |
471 | ||
472 | /* | |
473 | * Open. Make sure the device is really there. | |
474 | */ | |
475 | static int cciss_open(struct inode *inode, struct file *filep) | |
476 | { | |
477 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
478 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
479 | ||
480 | #ifdef CCISS_DEBUG | |
481 | printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name); | |
7c832835 | 482 | #endif /* CCISS_DEBUG */ |
1da177e4 | 483 | |
ddd47442 MM |
484 | if (host->busy_initializing || drv->busy_configuring) |
485 | return -EBUSY; | |
1da177e4 LT |
486 | /* |
487 | * Root is allowed to open raw volume zero even if it's not configured | |
488 | * so array config can still work. Root is also allowed to open any | |
489 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
490 | * disk information. I don't think I really like this | |
491 | * but I'm already using way to many device nodes to claim another one | |
492 | * for "raw controller". | |
493 | */ | |
494 | if (drv->nr_blocks == 0) { | |
7c832835 | 495 | if (iminor(inode) != 0) { /* not node 0? */ |
1da177e4 LT |
496 | /* if not node 0 make sure it is a partition = 0 */ |
497 | if (iminor(inode) & 0x0f) { | |
7c832835 | 498 | return -ENXIO; |
1da177e4 LT |
499 | /* if it is, make sure we have a LUN ID */ |
500 | } else if (drv->LunID == 0) { | |
501 | return -ENXIO; | |
502 | } | |
503 | } | |
504 | if (!capable(CAP_SYS_ADMIN)) | |
505 | return -EPERM; | |
506 | } | |
507 | drv->usage_count++; | |
508 | host->usage_count++; | |
509 | return 0; | |
510 | } | |
7c832835 | 511 | |
1da177e4 LT |
512 | /* |
513 | * Close. Sync first. | |
514 | */ | |
515 | static int cciss_release(struct inode *inode, struct file *filep) | |
516 | { | |
517 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
518 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
519 | ||
520 | #ifdef CCISS_DEBUG | |
7c832835 BH |
521 | printk(KERN_DEBUG "cciss_release %s\n", |
522 | inode->i_bdev->bd_disk->disk_name); | |
523 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
524 | |
525 | drv->usage_count--; | |
526 | host->usage_count--; | |
527 | return 0; | |
528 | } | |
529 | ||
530 | #ifdef CONFIG_COMPAT | |
531 | ||
532 | static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
533 | { | |
534 | int ret; | |
535 | lock_kernel(); | |
536 | ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg); | |
537 | unlock_kernel(); | |
538 | return ret; | |
539 | } | |
540 | ||
7c832835 BH |
541 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
542 | unsigned long arg); | |
543 | static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, | |
544 | unsigned long arg); | |
1da177e4 LT |
545 | |
546 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
547 | { | |
548 | switch (cmd) { | |
549 | case CCISS_GETPCIINFO: | |
550 | case CCISS_GETINTINFO: | |
551 | case CCISS_SETINTINFO: | |
552 | case CCISS_GETNODENAME: | |
553 | case CCISS_SETNODENAME: | |
554 | case CCISS_GETHEARTBEAT: | |
555 | case CCISS_GETBUSTYPES: | |
556 | case CCISS_GETFIRMVER: | |
557 | case CCISS_GETDRIVVER: | |
558 | case CCISS_REVALIDVOLS: | |
559 | case CCISS_DEREGDISK: | |
560 | case CCISS_REGNEWDISK: | |
561 | case CCISS_REGNEWD: | |
562 | case CCISS_RESCANDISK: | |
563 | case CCISS_GETLUNINFO: | |
564 | return do_ioctl(f, cmd, arg); | |
565 | ||
566 | case CCISS_PASSTHRU32: | |
567 | return cciss_ioctl32_passthru(f, cmd, arg); | |
568 | case CCISS_BIG_PASSTHRU32: | |
569 | return cciss_ioctl32_big_passthru(f, cmd, arg); | |
570 | ||
571 | default: | |
572 | return -ENOIOCTLCMD; | |
573 | } | |
574 | } | |
575 | ||
7c832835 BH |
576 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
577 | unsigned long arg) | |
1da177e4 LT |
578 | { |
579 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 580 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
581 | IOCTL_Command_struct arg64; |
582 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
583 | int err; | |
584 | u32 cp; | |
585 | ||
586 | err = 0; | |
7c832835 BH |
587 | err |= |
588 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
589 | sizeof(arg64.LUN_info)); | |
590 | err |= | |
591 | copy_from_user(&arg64.Request, &arg32->Request, | |
592 | sizeof(arg64.Request)); | |
593 | err |= | |
594 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
595 | sizeof(arg64.error_info)); | |
1da177e4 LT |
596 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
597 | err |= get_user(cp, &arg32->buf); | |
598 | arg64.buf = compat_ptr(cp); | |
599 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
600 | ||
601 | if (err) | |
602 | return -EFAULT; | |
603 | ||
7c832835 | 604 | err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
605 | if (err) |
606 | return err; | |
7c832835 BH |
607 | err |= |
608 | copy_in_user(&arg32->error_info, &p->error_info, | |
609 | sizeof(arg32->error_info)); | |
1da177e4 LT |
610 | if (err) |
611 | return -EFAULT; | |
612 | return err; | |
613 | } | |
614 | ||
7c832835 BH |
615 | static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, |
616 | unsigned long arg) | |
1da177e4 LT |
617 | { |
618 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 619 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 620 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
621 | BIG_IOCTL_Command_struct __user *p = |
622 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
623 | int err; |
624 | u32 cp; | |
625 | ||
626 | err = 0; | |
7c832835 BH |
627 | err |= |
628 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
629 | sizeof(arg64.LUN_info)); | |
630 | err |= | |
631 | copy_from_user(&arg64.Request, &arg32->Request, | |
632 | sizeof(arg64.Request)); | |
633 | err |= | |
634 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
635 | sizeof(arg64.error_info)); | |
1da177e4 LT |
636 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
637 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
638 | err |= get_user(cp, &arg32->buf); | |
639 | arg64.buf = compat_ptr(cp); | |
640 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
641 | ||
642 | if (err) | |
7c832835 | 643 | return -EFAULT; |
1da177e4 | 644 | |
7c832835 | 645 | err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
646 | if (err) |
647 | return err; | |
7c832835 BH |
648 | err |= |
649 | copy_in_user(&arg32->error_info, &p->error_info, | |
650 | sizeof(arg32->error_info)); | |
1da177e4 LT |
651 | if (err) |
652 | return -EFAULT; | |
653 | return err; | |
654 | } | |
655 | #endif | |
a885c8c4 CH |
656 | |
657 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
658 | { | |
659 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
660 | ||
661 | if (!drv->cylinders) | |
662 | return -ENXIO; | |
663 | ||
664 | geo->heads = drv->heads; | |
665 | geo->sectors = drv->sectors; | |
666 | geo->cylinders = drv->cylinders; | |
667 | return 0; | |
668 | } | |
669 | ||
1da177e4 | 670 | /* |
7c832835 | 671 | * ioctl |
1da177e4 | 672 | */ |
7c832835 BH |
673 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
674 | unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
675 | { |
676 | struct block_device *bdev = inode->i_bdev; | |
677 | struct gendisk *disk = bdev->bd_disk; | |
678 | ctlr_info_t *host = get_host(disk); | |
679 | drive_info_struct *drv = get_drv(disk); | |
680 | int ctlr = host->ctlr; | |
681 | void __user *argp = (void __user *)arg; | |
682 | ||
683 | #ifdef CCISS_DEBUG | |
684 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
685 | #endif /* CCISS_DEBUG */ |
686 | ||
687 | switch (cmd) { | |
1da177e4 | 688 | case CCISS_GETPCIINFO: |
7c832835 BH |
689 | { |
690 | cciss_pci_info_struct pciinfo; | |
691 | ||
692 | if (!arg) | |
693 | return -EINVAL; | |
694 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
695 | pciinfo.bus = host->pdev->bus->number; | |
696 | pciinfo.dev_fn = host->pdev->devfn; | |
697 | pciinfo.board_id = host->board_id; | |
698 | if (copy_to_user | |
699 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
700 | return -EFAULT; | |
701 | return 0; | |
702 | } | |
1da177e4 | 703 | case CCISS_GETINTINFO: |
7c832835 BH |
704 | { |
705 | cciss_coalint_struct intinfo; | |
706 | if (!arg) | |
707 | return -EINVAL; | |
708 | intinfo.delay = | |
709 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
710 | intinfo.count = | |
711 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
712 | if (copy_to_user | |
713 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
714 | return -EFAULT; | |
715 | return 0; | |
716 | } | |
1da177e4 | 717 | case CCISS_SETINTINFO: |
1da177e4 | 718 | { |
7c832835 BH |
719 | cciss_coalint_struct intinfo; |
720 | unsigned long flags; | |
721 | int i; | |
722 | ||
723 | if (!arg) | |
724 | return -EINVAL; | |
725 | if (!capable(CAP_SYS_ADMIN)) | |
726 | return -EPERM; | |
727 | if (copy_from_user | |
728 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
729 | return -EFAULT; | |
730 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
731 | { | |
732 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
733 | return -EINVAL; | |
734 | } | |
735 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
736 | /* Update the field, and then ring the doorbell */ | |
737 | writel(intinfo.delay, | |
738 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
739 | writel(intinfo.count, | |
740 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
741 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
742 | ||
743 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
744 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
745 | & CFGTBL_ChangeReq)) | |
746 | break; | |
747 | /* delay and try again */ | |
748 | udelay(1000); | |
749 | } | |
750 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
751 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
752 | return -EAGAIN; | |
753 | return 0; | |
1da177e4 | 754 | } |
1da177e4 | 755 | case CCISS_GETNODENAME: |
7c832835 BH |
756 | { |
757 | NodeName_type NodeName; | |
758 | int i; | |
759 | ||
760 | if (!arg) | |
761 | return -EINVAL; | |
762 | for (i = 0; i < 16; i++) | |
763 | NodeName[i] = | |
764 | readb(&host->cfgtable->ServerName[i]); | |
765 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
766 | return -EFAULT; | |
767 | return 0; | |
768 | } | |
1da177e4 | 769 | case CCISS_SETNODENAME: |
7c832835 BH |
770 | { |
771 | NodeName_type NodeName; | |
772 | unsigned long flags; | |
773 | int i; | |
774 | ||
775 | if (!arg) | |
776 | return -EINVAL; | |
777 | if (!capable(CAP_SYS_ADMIN)) | |
778 | return -EPERM; | |
779 | ||
780 | if (copy_from_user | |
781 | (NodeName, argp, sizeof(NodeName_type))) | |
782 | return -EFAULT; | |
783 | ||
784 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
785 | ||
786 | /* Update the field, and then ring the doorbell */ | |
787 | for (i = 0; i < 16; i++) | |
788 | writeb(NodeName[i], | |
789 | &host->cfgtable->ServerName[i]); | |
790 | ||
791 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
792 | ||
793 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
794 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
795 | & CFGTBL_ChangeReq)) | |
796 | break; | |
797 | /* delay and try again */ | |
798 | udelay(1000); | |
799 | } | |
800 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
801 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
802 | return -EAGAIN; | |
803 | return 0; | |
804 | } | |
1da177e4 LT |
805 | |
806 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
807 | { |
808 | Heartbeat_type heartbeat; | |
809 | ||
810 | if (!arg) | |
811 | return -EINVAL; | |
812 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
813 | if (copy_to_user | |
814 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
815 | return -EFAULT; | |
816 | return 0; | |
817 | } | |
1da177e4 | 818 | case CCISS_GETBUSTYPES: |
7c832835 BH |
819 | { |
820 | BusTypes_type BusTypes; | |
821 | ||
822 | if (!arg) | |
823 | return -EINVAL; | |
824 | BusTypes = readl(&host->cfgtable->BusTypes); | |
825 | if (copy_to_user | |
826 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
827 | return -EFAULT; | |
828 | return 0; | |
829 | } | |
1da177e4 | 830 | case CCISS_GETFIRMVER: |
7c832835 BH |
831 | { |
832 | FirmwareVer_type firmware; | |
1da177e4 | 833 | |
7c832835 BH |
834 | if (!arg) |
835 | return -EINVAL; | |
836 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 837 | |
7c832835 BH |
838 | if (copy_to_user |
839 | (argp, firmware, sizeof(FirmwareVer_type))) | |
840 | return -EFAULT; | |
841 | return 0; | |
842 | } | |
843 | case CCISS_GETDRIVVER: | |
844 | { | |
845 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 846 | |
7c832835 BH |
847 | if (!arg) |
848 | return -EINVAL; | |
1da177e4 | 849 | |
7c832835 BH |
850 | if (copy_to_user |
851 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
852 | return -EFAULT; | |
853 | return 0; | |
854 | } | |
1da177e4 LT |
855 | |
856 | case CCISS_REVALIDVOLS: | |
857 | if (bdev != bdev->bd_contains || drv != host->drv) | |
858 | return -ENXIO; | |
7c832835 BH |
859 | return revalidate_allvol(host); |
860 | ||
861 | case CCISS_GETLUNINFO:{ | |
862 | LogvolInfo_struct luninfo; | |
863 | ||
864 | luninfo.LunID = drv->LunID; | |
865 | luninfo.num_opens = drv->usage_count; | |
866 | luninfo.num_parts = 0; | |
867 | if (copy_to_user(argp, &luninfo, | |
868 | sizeof(LogvolInfo_struct))) | |
869 | return -EFAULT; | |
870 | return 0; | |
871 | } | |
1da177e4 | 872 | case CCISS_DEREGDISK: |
ddd47442 | 873 | return rebuild_lun_table(host, disk); |
1da177e4 LT |
874 | |
875 | case CCISS_REGNEWD: | |
ddd47442 | 876 | return rebuild_lun_table(host, NULL); |
1da177e4 LT |
877 | |
878 | case CCISS_PASSTHRU: | |
1da177e4 | 879 | { |
7c832835 BH |
880 | IOCTL_Command_struct iocommand; |
881 | CommandList_struct *c; | |
882 | char *buff = NULL; | |
883 | u64bit temp64; | |
884 | unsigned long flags; | |
6e9a4738 | 885 | DECLARE_COMPLETION_ONSTACK(wait); |
1da177e4 | 886 | |
7c832835 BH |
887 | if (!arg) |
888 | return -EINVAL; | |
1da177e4 | 889 | |
7c832835 BH |
890 | if (!capable(CAP_SYS_RAWIO)) |
891 | return -EPERM; | |
1da177e4 | 892 | |
7c832835 BH |
893 | if (copy_from_user |
894 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
895 | return -EFAULT; | |
896 | if ((iocommand.buf_size < 1) && | |
897 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
898 | return -EINVAL; | |
899 | } | |
900 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
901 | /* Check kmalloc limits */ | |
902 | if (iocommand.buf_size > 128000) | |
903 | return -EINVAL; | |
904 | #endif | |
905 | if (iocommand.buf_size > 0) { | |
906 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
907 | if (buff == NULL) | |
908 | return -EFAULT; | |
909 | } | |
910 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
911 | /* Copy the data into the buffer we created */ | |
912 | if (copy_from_user | |
913 | (buff, iocommand.buf, iocommand.buf_size)) { | |
914 | kfree(buff); | |
915 | return -EFAULT; | |
916 | } | |
917 | } else { | |
918 | memset(buff, 0, iocommand.buf_size); | |
919 | } | |
920 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
921 | kfree(buff); | |
922 | return -ENOMEM; | |
923 | } | |
924 | // Fill in the command type | |
925 | c->cmd_type = CMD_IOCTL_PEND; | |
926 | // Fill in Command Header | |
927 | c->Header.ReplyQueue = 0; // unused in simple mode | |
928 | if (iocommand.buf_size > 0) // buffer to fill | |
929 | { | |
930 | c->Header.SGList = 1; | |
931 | c->Header.SGTotal = 1; | |
932 | } else // no buffers to fill | |
933 | { | |
934 | c->Header.SGList = 0; | |
935 | c->Header.SGTotal = 0; | |
936 | } | |
937 | c->Header.LUN = iocommand.LUN_info; | |
938 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag | |
1da177e4 | 939 | |
7c832835 BH |
940 | // Fill in Request block |
941 | c->Request = iocommand.Request; | |
1da177e4 | 942 | |
7c832835 BH |
943 | // Fill in the scatter gather information |
944 | if (iocommand.buf_size > 0) { | |
945 | temp64.val = pci_map_single(host->pdev, buff, | |
946 | iocommand.buf_size, | |
947 | PCI_DMA_BIDIRECTIONAL); | |
948 | c->SG[0].Addr.lower = temp64.val32.lower; | |
949 | c->SG[0].Addr.upper = temp64.val32.upper; | |
950 | c->SG[0].Len = iocommand.buf_size; | |
951 | c->SG[0].Ext = 0; // we are not chaining | |
952 | } | |
953 | c->waiting = &wait; | |
954 | ||
955 | /* Put the request on the tail of the request queue */ | |
956 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
957 | addQ(&host->reqQ, c); | |
958 | host->Qdepth++; | |
959 | start_io(host); | |
960 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
961 | ||
962 | wait_for_completion(&wait); | |
963 | ||
964 | /* unlock the buffers from DMA */ | |
965 | temp64.val32.lower = c->SG[0].Addr.lower; | |
966 | temp64.val32.upper = c->SG[0].Addr.upper; | |
967 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
968 | iocommand.buf_size, | |
969 | PCI_DMA_BIDIRECTIONAL); | |
970 | ||
971 | /* Copy the error information out */ | |
972 | iocommand.error_info = *(c->err_info); | |
973 | if (copy_to_user | |
974 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
975 | kfree(buff); | |
1da177e4 LT |
976 | cmd_free(host, c, 0); |
977 | return -EFAULT; | |
978 | } | |
7c832835 BH |
979 | |
980 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
981 | /* Copy the data out of the buffer we created */ | |
982 | if (copy_to_user | |
983 | (iocommand.buf, buff, iocommand.buf_size)) { | |
984 | kfree(buff); | |
985 | cmd_free(host, c, 0); | |
986 | return -EFAULT; | |
987 | } | |
988 | } | |
989 | kfree(buff); | |
990 | cmd_free(host, c, 0); | |
991 | return 0; | |
1da177e4 | 992 | } |
7c832835 BH |
993 | case CCISS_BIG_PASSTHRU:{ |
994 | BIG_IOCTL_Command_struct *ioc; | |
995 | CommandList_struct *c; | |
996 | unsigned char **buff = NULL; | |
997 | int *buff_size = NULL; | |
998 | u64bit temp64; | |
999 | unsigned long flags; | |
1000 | BYTE sg_used = 0; | |
1001 | int status = 0; | |
1002 | int i; | |
6e9a4738 | 1003 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1004 | __u32 left; |
1005 | __u32 sz; | |
1006 | BYTE __user *data_ptr; | |
1007 | ||
1008 | if (!arg) | |
1009 | return -EINVAL; | |
1010 | if (!capable(CAP_SYS_RAWIO)) | |
1011 | return -EPERM; | |
1012 | ioc = (BIG_IOCTL_Command_struct *) | |
1013 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1014 | if (!ioc) { | |
1015 | status = -ENOMEM; | |
1016 | goto cleanup1; | |
1017 | } | |
1018 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1019 | status = -EFAULT; | |
1020 | goto cleanup1; | |
1021 | } | |
1022 | if ((ioc->buf_size < 1) && | |
1023 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1024 | status = -EINVAL; |
1025 | goto cleanup1; | |
7c832835 BH |
1026 | } |
1027 | /* Check kmalloc limits using all SGs */ | |
1028 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1029 | status = -EINVAL; | |
1030 | goto cleanup1; | |
1031 | } | |
1032 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1033 | status = -EINVAL; | |
1034 | goto cleanup1; | |
1035 | } | |
1036 | buff = | |
1037 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1038 | if (!buff) { | |
1da177e4 LT |
1039 | status = -ENOMEM; |
1040 | goto cleanup1; | |
1041 | } | |
7c832835 BH |
1042 | buff_size = (int *)kmalloc(MAXSGENTRIES * sizeof(int), |
1043 | GFP_KERNEL); | |
1044 | if (!buff_size) { | |
1045 | status = -ENOMEM; | |
1046 | goto cleanup1; | |
1047 | } | |
1048 | left = ioc->buf_size; | |
1049 | data_ptr = ioc->buf; | |
1050 | while (left) { | |
1051 | sz = (left > | |
1052 | ioc->malloc_size) ? ioc-> | |
1053 | malloc_size : left; | |
1054 | buff_size[sg_used] = sz; | |
1055 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1056 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1057 | status = -ENOMEM; |
15534d38 JA |
1058 | goto cleanup1; |
1059 | } | |
7c832835 BH |
1060 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1061 | if (copy_from_user | |
1062 | (buff[sg_used], data_ptr, sz)) { | |
1063 | status = -ENOMEM; | |
1064 | goto cleanup1; | |
1065 | } | |
1066 | } else { | |
1067 | memset(buff[sg_used], 0, sz); | |
1068 | } | |
1069 | left -= sz; | |
1070 | data_ptr += sz; | |
1071 | sg_used++; | |
1072 | } | |
1073 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1074 | status = -ENOMEM; | |
1075 | goto cleanup1; | |
1076 | } | |
1077 | c->cmd_type = CMD_IOCTL_PEND; | |
1078 | c->Header.ReplyQueue = 0; | |
1079 | ||
1080 | if (ioc->buf_size > 0) { | |
1081 | c->Header.SGList = sg_used; | |
1082 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1083 | } else { |
7c832835 BH |
1084 | c->Header.SGList = 0; |
1085 | c->Header.SGTotal = 0; | |
1da177e4 | 1086 | } |
7c832835 BH |
1087 | c->Header.LUN = ioc->LUN_info; |
1088 | c->Header.Tag.lower = c->busaddr; | |
1089 | ||
1090 | c->Request = ioc->Request; | |
1091 | if (ioc->buf_size > 0) { | |
1092 | int i; | |
1093 | for (i = 0; i < sg_used; i++) { | |
1094 | temp64.val = | |
1095 | pci_map_single(host->pdev, buff[i], | |
1096 | buff_size[i], | |
1097 | PCI_DMA_BIDIRECTIONAL); | |
1098 | c->SG[i].Addr.lower = | |
1099 | temp64.val32.lower; | |
1100 | c->SG[i].Addr.upper = | |
1101 | temp64.val32.upper; | |
1102 | c->SG[i].Len = buff_size[i]; | |
1103 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1104 | } | |
1105 | } | |
1106 | c->waiting = &wait; | |
1107 | /* Put the request on the tail of the request queue */ | |
1108 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1109 | addQ(&host->reqQ, c); | |
1110 | host->Qdepth++; | |
1111 | start_io(host); | |
1112 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1113 | wait_for_completion(&wait); | |
1114 | /* unlock the buffers from DMA */ | |
1115 | for (i = 0; i < sg_used; i++) { | |
1116 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1117 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1118 | pci_unmap_single(host->pdev, | |
1119 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1120 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1121 | } |
7c832835 BH |
1122 | /* Copy the error information out */ |
1123 | ioc->error_info = *(c->err_info); | |
1124 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1125 | cmd_free(host, c, 0); | |
1126 | status = -EFAULT; | |
1127 | goto cleanup1; | |
1128 | } | |
1129 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1130 | /* Copy the data out of the buffer we created */ | |
1131 | BYTE __user *ptr = ioc->buf; | |
1132 | for (i = 0; i < sg_used; i++) { | |
1133 | if (copy_to_user | |
1134 | (ptr, buff[i], buff_size[i])) { | |
1135 | cmd_free(host, c, 0); | |
1136 | status = -EFAULT; | |
1137 | goto cleanup1; | |
1138 | } | |
1139 | ptr += buff_size[i]; | |
1da177e4 | 1140 | } |
1da177e4 | 1141 | } |
7c832835 BH |
1142 | cmd_free(host, c, 0); |
1143 | status = 0; | |
1144 | cleanup1: | |
1145 | if (buff) { | |
1146 | for (i = 0; i < sg_used; i++) | |
1147 | kfree(buff[i]); | |
1148 | kfree(buff); | |
1149 | } | |
1150 | kfree(buff_size); | |
1151 | kfree(ioc); | |
1152 | return status; | |
1da177e4 | 1153 | } |
1da177e4 LT |
1154 | default: |
1155 | return -ENOTTY; | |
1156 | } | |
1da177e4 LT |
1157 | } |
1158 | ||
1159 | /* | |
1160 | * revalidate_allvol is for online array config utilities. After a | |
1161 | * utility reconfigures the drives in the array, it can use this function | |
1162 | * (through an ioctl) to make the driver zap any previous disk structs for | |
1163 | * that controller and get new ones. | |
1164 | * | |
1165 | * Right now I'm using the getgeometry() function to do this, but this | |
1166 | * function should probably be finer grained and allow you to revalidate one | |
d14c4ab5 | 1167 | * particular logical volume (instead of all of them on a particular |
1da177e4 LT |
1168 | * controller). |
1169 | */ | |
1170 | static int revalidate_allvol(ctlr_info_t *host) | |
1171 | { | |
1172 | int ctlr = host->ctlr, i; | |
1173 | unsigned long flags; | |
1174 | ||
7c832835 BH |
1175 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
1176 | if (host->usage_count > 1) { | |
1177 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1178 | printk(KERN_WARNING "cciss: Device busy for volume" | |
1179 | " revalidation (usage=%d)\n", host->usage_count); | |
1180 | return -EBUSY; | |
1181 | } | |
1182 | host->usage_count++; | |
1da177e4 LT |
1183 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
1184 | ||
7c832835 | 1185 | for (i = 0; i < NWD; i++) { |
1da177e4 | 1186 | struct gendisk *disk = host->gendisk[i]; |
6f5a0f7c | 1187 | if (disk) { |
1188 | request_queue_t *q = disk->queue; | |
1189 | ||
1190 | if (disk->flags & GENHD_FL_UP) | |
1191 | del_gendisk(disk); | |
1192 | if (q) | |
1193 | blk_cleanup_queue(q); | |
6f5a0f7c | 1194 | } |
1da177e4 LT |
1195 | } |
1196 | ||
7c832835 BH |
1197 | /* |
1198 | * Set the partition and block size structures for all volumes | |
1199 | * on this controller to zero. We will reread all of this data | |
1200 | */ | |
1201 | memset(host->drv, 0, sizeof(drive_info_struct) | |
1202 | * CISS_MAX_LUN); | |
1203 | /* | |
1204 | * Tell the array controller not to give us any interrupts while | |
1205 | * we check the new geometry. Then turn interrupts back on when | |
1206 | * we're done. | |
1207 | */ | |
1208 | host->access.set_intr_mask(host, CCISS_INTR_OFF); | |
1209 | cciss_getgeometry(ctlr); | |
1210 | host->access.set_intr_mask(host, CCISS_INTR_ON); | |
1211 | ||
1212 | /* Loop through each real device */ | |
1da177e4 LT |
1213 | for (i = 0; i < NWD; i++) { |
1214 | struct gendisk *disk = host->gendisk[i]; | |
1215 | drive_info_struct *drv = &(host->drv[i]); | |
1216 | /* we must register the controller even if no disks exist */ | |
1217 | /* this is for the online array utilities */ | |
1218 | if (!drv->heads && i) | |
1219 | continue; | |
ad2b9312 | 1220 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
1da177e4 LT |
1221 | set_capacity(disk, drv->nr_blocks); |
1222 | add_disk(disk); | |
1223 | } | |
7c832835 BH |
1224 | host->usage_count--; |
1225 | return 0; | |
1da177e4 LT |
1226 | } |
1227 | ||
ca1e0484 MM |
1228 | static inline void complete_buffers(struct bio *bio, int status) |
1229 | { | |
1230 | while (bio) { | |
1231 | struct bio *xbh = bio->bi_next; | |
1232 | int nr_sectors = bio_sectors(bio); | |
1233 | ||
1234 | bio->bi_next = NULL; | |
ca1e0484 MM |
1235 | bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO); |
1236 | bio = xbh; | |
1237 | } | |
ca1e0484 MM |
1238 | } |
1239 | ||
7b30f092 JA |
1240 | static void cciss_check_queues(ctlr_info_t *h) |
1241 | { | |
1242 | int start_queue = h->next_to_run; | |
1243 | int i; | |
1244 | ||
1245 | /* check to see if we have maxed out the number of commands that can | |
1246 | * be placed on the queue. If so then exit. We do this check here | |
1247 | * in case the interrupt we serviced was from an ioctl and did not | |
1248 | * free any new commands. | |
1249 | */ | |
f880632f | 1250 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1251 | return; |
1252 | ||
1253 | /* We have room on the queue for more commands. Now we need to queue | |
1254 | * them up. We will also keep track of the next queue to run so | |
1255 | * that every queue gets a chance to be started first. | |
1256 | */ | |
1257 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1258 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1259 | /* make sure the disk has been added and the drive is real | |
1260 | * because this can be called from the middle of init_one. | |
1261 | */ | |
1262 | if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads)) | |
1263 | continue; | |
1264 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1265 | ||
1266 | /* check to see if we have maxed out the number of commands | |
1267 | * that can be placed on the queue. | |
1268 | */ | |
f880632f | 1269 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1270 | if (curr_queue == start_queue) { |
1271 | h->next_to_run = | |
1272 | (start_queue + 1) % (h->highest_lun + 1); | |
1273 | break; | |
1274 | } else { | |
1275 | h->next_to_run = curr_queue; | |
1276 | break; | |
1277 | } | |
1278 | } else { | |
1279 | curr_queue = (curr_queue + 1) % (h->highest_lun + 1); | |
1280 | } | |
1281 | } | |
1282 | } | |
1283 | ||
ca1e0484 MM |
1284 | static void cciss_softirq_done(struct request *rq) |
1285 | { | |
1286 | CommandList_struct *cmd = rq->completion_data; | |
1287 | ctlr_info_t *h = hba[cmd->ctlr]; | |
1288 | unsigned long flags; | |
1289 | u64bit temp64; | |
1290 | int i, ddir; | |
1291 | ||
1292 | if (cmd->Request.Type.Direction == XFER_READ) | |
1293 | ddir = PCI_DMA_FROMDEVICE; | |
1294 | else | |
1295 | ddir = PCI_DMA_TODEVICE; | |
1296 | ||
1297 | /* command did not need to be retried */ | |
1298 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1299 | for (i = 0; i < cmd->Header.SGList; i++) { |
ca1e0484 MM |
1300 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
1301 | temp64.val32.upper = cmd->SG[i].Addr.upper; | |
1302 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); | |
1303 | } | |
1304 | ||
1305 | complete_buffers(rq->bio, rq->errors); | |
1306 | ||
b369c2cf JA |
1307 | if (blk_fs_request(rq)) { |
1308 | const int rw = rq_data_dir(rq); | |
1309 | ||
1310 | disk_stat_add(rq->rq_disk, sectors[rw], rq->nr_sectors); | |
1311 | } | |
1312 | ||
ca1e0484 MM |
1313 | #ifdef CCISS_DEBUG |
1314 | printk("Done with %p\n", rq); | |
7c832835 | 1315 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1316 | |
8bd0b97e | 1317 | add_disk_randomness(rq->rq_disk); |
ca1e0484 MM |
1318 | spin_lock_irqsave(&h->lock, flags); |
1319 | end_that_request_last(rq, rq->errors); | |
7c832835 | 1320 | cmd_free(h, cmd, 1); |
7b30f092 | 1321 | cciss_check_queues(h); |
ca1e0484 MM |
1322 | spin_unlock_irqrestore(&h->lock, flags); |
1323 | } | |
1324 | ||
ddd47442 MM |
1325 | /* This function will check the usage_count of the drive to be updated/added. |
1326 | * If the usage_count is zero then the drive information will be updated and | |
1327 | * the disk will be re-registered with the kernel. If not then it will be | |
1328 | * left alone for the next reboot. The exception to this is disk 0 which | |
1329 | * will always be left registered with the kernel since it is also the | |
1330 | * controller node. Any changes to disk 0 will show up on the next | |
1331 | * reboot. | |
7c832835 | 1332 | */ |
ddd47442 | 1333 | static void cciss_update_drive_info(int ctlr, int drv_index) |
7c832835 | 1334 | { |
ddd47442 MM |
1335 | ctlr_info_t *h = hba[ctlr]; |
1336 | struct gendisk *disk; | |
ddd47442 MM |
1337 | InquiryData_struct *inq_buff = NULL; |
1338 | unsigned int block_size; | |
00988a35 | 1339 | sector_t total_size; |
ddd47442 MM |
1340 | unsigned long flags = 0; |
1341 | int ret = 0; | |
1342 | ||
7c832835 BH |
1343 | /* if the disk already exists then deregister it before proceeding */ |
1344 | if (h->drv[drv_index].raid_level != -1) { | |
ddd47442 MM |
1345 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
1346 | h->drv[drv_index].busy_configuring = 1; | |
1347 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1348 | ret = deregister_disk(h->gendisk[drv_index], | |
7c832835 | 1349 | &h->drv[drv_index], 0); |
ddd47442 MM |
1350 | h->drv[drv_index].busy_configuring = 0; |
1351 | } | |
1352 | ||
1353 | /* If the disk is in use return */ | |
1354 | if (ret) | |
1355 | return; | |
1356 | ||
d14c4ab5 | 1357 | /* Get information about the disk and modify the driver structure */ |
7c832835 | 1358 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
ddd47442 MM |
1359 | if (inq_buff == NULL) |
1360 | goto mem_msg; | |
1361 | ||
00988a35 | 1362 | cciss_read_capacity(ctlr, drv_index, 1, |
7c832835 | 1363 | &total_size, &block_size); |
00988a35 MMOD |
1364 | |
1365 | /* total size = last LBA + 1 */ | |
1366 | /* FFFFFFFF + 1 = 0, cannot have a logical volume of size 0 */ | |
1367 | /* so we assume this volume this must be >2TB in size */ | |
1368 | if (total_size == (__u32) 0) { | |
1369 | cciss_read_capacity_16(ctlr, drv_index, 1, | |
1370 | &total_size, &block_size); | |
1371 | h->cciss_read = CCISS_READ_16; | |
1372 | h->cciss_write = CCISS_WRITE_16; | |
1373 | } else { | |
1374 | h->cciss_read = CCISS_READ_10; | |
1375 | h->cciss_write = CCISS_WRITE_10; | |
1376 | } | |
ddd47442 | 1377 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, |
7c832835 | 1378 | inq_buff, &h->drv[drv_index]); |
ddd47442 MM |
1379 | |
1380 | ++h->num_luns; | |
1381 | disk = h->gendisk[drv_index]; | |
1382 | set_capacity(disk, h->drv[drv_index].nr_blocks); | |
1383 | ||
ddd47442 | 1384 | /* if it's the controller it's already added */ |
7c832835 | 1385 | if (drv_index) { |
ddd47442 MM |
1386 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
1387 | ||
1388 | /* Set up queue information */ | |
1389 | disk->queue->backing_dev_info.ra_pages = READ_AHEAD; | |
1390 | blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask); | |
1391 | ||
1392 | /* This is a hardware imposed limit. */ | |
1393 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); | |
1394 | ||
1395 | /* This is a limit in the driver and could be eliminated. */ | |
1396 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); | |
1397 | ||
1398 | blk_queue_max_sectors(disk->queue, 512); | |
1399 | ||
ca1e0484 MM |
1400 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
1401 | ||
ddd47442 MM |
1402 | disk->queue->queuedata = hba[ctlr]; |
1403 | ||
1404 | blk_queue_hardsect_size(disk->queue, | |
7c832835 | 1405 | hba[ctlr]->drv[drv_index].block_size); |
ddd47442 MM |
1406 | |
1407 | h->drv[drv_index].queue = disk->queue; | |
1408 | add_disk(disk); | |
1409 | } | |
1410 | ||
7c832835 | 1411 | freeret: |
ddd47442 MM |
1412 | kfree(inq_buff); |
1413 | return; | |
7c832835 | 1414 | mem_msg: |
ddd47442 MM |
1415 | printk(KERN_ERR "cciss: out of memory\n"); |
1416 | goto freeret; | |
1417 | } | |
1418 | ||
1419 | /* This function will find the first index of the controllers drive array | |
1420 | * that has a -1 for the raid_level and will return that index. This is | |
1421 | * where new drives will be added. If the index to be returned is greater | |
1422 | * than the highest_lun index for the controller then highest_lun is set | |
1423 | * to this new index. If there are no available indexes then -1 is returned. | |
7c832835 | 1424 | */ |
ddd47442 MM |
1425 | static int cciss_find_free_drive_index(int ctlr) |
1426 | { | |
1427 | int i; | |
1428 | ||
7c832835 BH |
1429 | for (i = 0; i < CISS_MAX_LUN; i++) { |
1430 | if (hba[ctlr]->drv[i].raid_level == -1) { | |
ddd47442 MM |
1431 | if (i > hba[ctlr]->highest_lun) |
1432 | hba[ctlr]->highest_lun = i; | |
1433 | return i; | |
1434 | } | |
1435 | } | |
1436 | return -1; | |
1437 | } | |
1438 | ||
1439 | /* This function will add and remove logical drives from the Logical | |
d14c4ab5 | 1440 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
1441 | * so that mount points are preserved until the next reboot. This allows |
1442 | * for the removal of logical drives in the middle of the drive array | |
1443 | * without a re-ordering of those drives. | |
1444 | * INPUT | |
1445 | * h = The controller to perform the operations on | |
1446 | * del_disk = The disk to remove if specified. If the value given | |
1447 | * is NULL then no disk is removed. | |
7c832835 | 1448 | */ |
ddd47442 | 1449 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk) |
1da177e4 | 1450 | { |
ddd47442 MM |
1451 | int ctlr = h->ctlr; |
1452 | int num_luns; | |
1453 | ReportLunData_struct *ld_buff = NULL; | |
1454 | drive_info_struct *drv = NULL; | |
1455 | int return_code; | |
1456 | int listlength = 0; | |
1457 | int i; | |
1458 | int drv_found; | |
1459 | int drv_index = 0; | |
1460 | __u32 lunid = 0; | |
1da177e4 | 1461 | unsigned long flags; |
ddd47442 MM |
1462 | |
1463 | /* Set busy_configuring flag for this operation */ | |
1464 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 1465 | if (h->num_luns >= CISS_MAX_LUN) { |
ddd47442 MM |
1466 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
1467 | return -EINVAL; | |
1468 | } | |
1469 | ||
7c832835 | 1470 | if (h->busy_configuring) { |
ddd47442 MM |
1471 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
1472 | return -EBUSY; | |
1473 | } | |
1474 | h->busy_configuring = 1; | |
1475 | ||
1476 | /* if del_disk is NULL then we are being called to add a new disk | |
1477 | * and update the logical drive table. If it is not NULL then | |
1478 | * we will check if the disk is in use or not. | |
1479 | */ | |
7c832835 | 1480 | if (del_disk != NULL) { |
ddd47442 MM |
1481 | drv = get_drv(del_disk); |
1482 | drv->busy_configuring = 1; | |
1483 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1484 | return_code = deregister_disk(del_disk, drv, 1); | |
1485 | drv->busy_configuring = 0; | |
1486 | h->busy_configuring = 0; | |
1487 | return return_code; | |
1488 | } else { | |
1489 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1490 | if (!capable(CAP_SYS_RAWIO)) | |
1491 | return -EPERM; | |
1492 | ||
1493 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); | |
1494 | if (ld_buff == NULL) | |
1495 | goto mem_msg; | |
1496 | ||
1497 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
7c832835 BH |
1498 | sizeof(ReportLunData_struct), 0, |
1499 | 0, 0, TYPE_CMD); | |
1500 | ||
1501 | if (return_code == IO_OK) { | |
1502 | listlength |= | |
1503 | (0xff & (unsigned int)(ld_buff->LUNListLength[0])) | |
1504 | << 24; | |
1505 | listlength |= | |
1506 | (0xff & (unsigned int)(ld_buff->LUNListLength[1])) | |
1507 | << 16; | |
1508 | listlength |= | |
1509 | (0xff & (unsigned int)(ld_buff->LUNListLength[2])) | |
1510 | << 8; | |
1511 | listlength |= | |
1512 | 0xff & (unsigned int)(ld_buff->LUNListLength[3]); | |
1513 | } else { /* reading number of logical volumes failed */ | |
ddd47442 | 1514 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 1515 | " command failed\n"); |
ddd47442 MM |
1516 | listlength = 0; |
1517 | goto freeret; | |
1518 | } | |
1519 | ||
1520 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
7c832835 | 1521 | if (num_luns > CISS_MAX_LUN) { |
ddd47442 MM |
1522 | num_luns = CISS_MAX_LUN; |
1523 | printk(KERN_WARNING "cciss: more luns configured" | |
7c832835 BH |
1524 | " on controller than can be handled by" |
1525 | " this driver.\n"); | |
ddd47442 MM |
1526 | } |
1527 | ||
1528 | /* Compare controller drive array to drivers drive array. | |
7c832835 BH |
1529 | * Check for updates in the drive information and any new drives |
1530 | * on the controller. | |
1531 | */ | |
1532 | for (i = 0; i < num_luns; i++) { | |
ddd47442 MM |
1533 | int j; |
1534 | ||
1535 | drv_found = 0; | |
1536 | ||
7c832835 BH |
1537 | lunid = (0xff & |
1538 | (unsigned int)(ld_buff->LUN[i][3])) << 24; | |
1539 | lunid |= (0xff & | |
1540 | (unsigned int)(ld_buff->LUN[i][2])) << 16; | |
1541 | lunid |= (0xff & | |
1542 | (unsigned int)(ld_buff->LUN[i][1])) << 8; | |
1543 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
ddd47442 MM |
1544 | |
1545 | /* Find if the LUN is already in the drive array | |
1546 | * of the controller. If so then update its info | |
1547 | * if not is use. If it does not exist then find | |
1548 | * the first free index and add it. | |
7c832835 BH |
1549 | */ |
1550 | for (j = 0; j <= h->highest_lun; j++) { | |
1551 | if (h->drv[j].LunID == lunid) { | |
ddd47442 MM |
1552 | drv_index = j; |
1553 | drv_found = 1; | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | /* check if the drive was found already in the array */ | |
7c832835 | 1558 | if (!drv_found) { |
ddd47442 MM |
1559 | drv_index = cciss_find_free_drive_index(ctlr); |
1560 | if (drv_index == -1) | |
1561 | goto freeret; | |
1562 | ||
1563 | } | |
1564 | h->drv[drv_index].LunID = lunid; | |
1565 | cciss_update_drive_info(ctlr, drv_index); | |
7c832835 BH |
1566 | } /* end for */ |
1567 | } /* end else */ | |
ddd47442 | 1568 | |
7c832835 | 1569 | freeret: |
ddd47442 MM |
1570 | kfree(ld_buff); |
1571 | h->busy_configuring = 0; | |
1572 | /* We return -1 here to tell the ACU that we have registered/updated | |
1573 | * all of the drives that we can and to keep it from calling us | |
1574 | * additional times. | |
7c832835 | 1575 | */ |
ddd47442 | 1576 | return -1; |
7c832835 | 1577 | mem_msg: |
ddd47442 MM |
1578 | printk(KERN_ERR "cciss: out of memory\n"); |
1579 | goto freeret; | |
1580 | } | |
1581 | ||
1582 | /* This function will deregister the disk and it's queue from the | |
1583 | * kernel. It must be called with the controller lock held and the | |
1584 | * drv structures busy_configuring flag set. It's parameters are: | |
1585 | * | |
1586 | * disk = This is the disk to be deregistered | |
1587 | * drv = This is the drive_info_struct associated with the disk to be | |
1588 | * deregistered. It contains information about the disk used | |
1589 | * by the driver. | |
1590 | * clear_all = This flag determines whether or not the disk information | |
1591 | * is going to be completely cleared out and the highest_lun | |
1592 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 1593 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
1594 | * the highest_lun should be left unchanged and the LunID |
1595 | * should not be cleared. | |
1596 | */ | |
1597 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, | |
1598 | int clear_all) | |
1599 | { | |
1da177e4 | 1600 | ctlr_info_t *h = get_host(disk); |
1da177e4 LT |
1601 | |
1602 | if (!capable(CAP_SYS_RAWIO)) | |
1603 | return -EPERM; | |
1604 | ||
1da177e4 | 1605 | /* make sure logical volume is NOT is use */ |
7c832835 BH |
1606 | if (clear_all || (h->gendisk[0] == disk)) { |
1607 | if (drv->usage_count > 1) | |
1608 | return -EBUSY; | |
1609 | } else if (drv->usage_count > 0) | |
1610 | return -EBUSY; | |
1da177e4 | 1611 | |
ddd47442 MM |
1612 | /* invalidate the devices and deregister the disk. If it is disk |
1613 | * zero do not deregister it but just zero out it's values. This | |
1614 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
1615 | */ |
1616 | if (h->gendisk[0] != disk) { | |
6f5a0f7c | 1617 | if (disk) { |
1618 | request_queue_t *q = disk->queue; | |
1619 | if (disk->flags & GENHD_FL_UP) | |
1620 | del_gendisk(disk); | |
2f6331fa | 1621 | if (q) { |
6f5a0f7c | 1622 | blk_cleanup_queue(q); |
2f6331fa MM |
1623 | drv->queue = NULL; |
1624 | } | |
ddd47442 MM |
1625 | } |
1626 | } | |
1627 | ||
1628 | --h->num_luns; | |
1629 | /* zero out the disk size info */ | |
1630 | drv->nr_blocks = 0; | |
1631 | drv->block_size = 0; | |
1632 | drv->heads = 0; | |
1633 | drv->sectors = 0; | |
1634 | drv->cylinders = 0; | |
1635 | drv->raid_level = -1; /* This can be used as a flag variable to | |
1636 | * indicate that this element of the drive | |
1637 | * array is free. | |
7c832835 BH |
1638 | */ |
1639 | ||
1640 | if (clear_all) { | |
1641 | /* check to see if it was the last disk */ | |
1642 | if (drv == h->drv + h->highest_lun) { | |
1643 | /* if so, find the new hightest lun */ | |
1644 | int i, newhighest = -1; | |
1645 | for (i = 0; i < h->highest_lun; i++) { | |
1646 | /* if the disk has size > 0, it is available */ | |
ddd47442 | 1647 | if (h->drv[i].heads) |
7c832835 BH |
1648 | newhighest = i; |
1649 | } | |
1650 | h->highest_lun = newhighest; | |
1da177e4 | 1651 | } |
ddd47442 | 1652 | |
7c832835 | 1653 | drv->LunID = 0; |
ddd47442 | 1654 | } |
e2019b58 | 1655 | return 0; |
1da177e4 | 1656 | } |
ddd47442 | 1657 | |
7c832835 BH |
1658 | 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, |
1659 | 1: address logical volume log_unit, | |
1660 | 2: periph device address is scsi3addr */ | |
1661 | unsigned int log_unit, __u8 page_code, | |
1662 | unsigned char *scsi3addr, int cmd_type) | |
1da177e4 | 1663 | { |
7c832835 | 1664 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
1665 | u64bit buff_dma_handle; |
1666 | int status = IO_OK; | |
1667 | ||
1668 | c->cmd_type = CMD_IOCTL_PEND; | |
1669 | c->Header.ReplyQueue = 0; | |
7c832835 | 1670 | if (buff != NULL) { |
1da177e4 | 1671 | c->Header.SGList = 1; |
7c832835 | 1672 | c->Header.SGTotal = 1; |
1da177e4 LT |
1673 | } else { |
1674 | c->Header.SGList = 0; | |
7c832835 | 1675 | c->Header.SGTotal = 0; |
1da177e4 LT |
1676 | } |
1677 | c->Header.Tag.lower = c->busaddr; | |
1678 | ||
1679 | c->Request.Type.Type = cmd_type; | |
1680 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
1681 | switch (cmd) { |
1682 | case CISS_INQUIRY: | |
1da177e4 | 1683 | /* If the logical unit number is 0 then, this is going |
7c832835 BH |
1684 | to controller so It's a physical command |
1685 | mode = 0 target = 0. So we have nothing to write. | |
1686 | otherwise, if use_unit_num == 1, | |
1687 | mode = 1(volume set addressing) target = LUNID | |
1688 | otherwise, if use_unit_num == 2, | |
1689 | mode = 0(periph dev addr) target = scsi3addr */ | |
1da177e4 | 1690 | if (use_unit_num == 1) { |
7c832835 BH |
1691 | c->Header.LUN.LogDev.VolId = |
1692 | h->drv[log_unit].LunID; | |
1693 | c->Header.LUN.LogDev.Mode = 1; | |
1da177e4 | 1694 | } else if (use_unit_num == 2) { |
7c832835 BH |
1695 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, |
1696 | 8); | |
1da177e4 LT |
1697 | c->Header.LUN.LogDev.Mode = 0; |
1698 | } | |
1699 | /* are we trying to read a vital product page */ | |
7c832835 | 1700 | if (page_code != 0) { |
1da177e4 LT |
1701 | c->Request.CDB[1] = 0x01; |
1702 | c->Request.CDB[2] = page_code; | |
1703 | } | |
1704 | c->Request.CDBLen = 6; | |
7c832835 | 1705 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
1706 | c->Request.Type.Direction = XFER_READ; |
1707 | c->Request.Timeout = 0; | |
7c832835 BH |
1708 | c->Request.CDB[0] = CISS_INQUIRY; |
1709 | c->Request.CDB[4] = size & 0xFF; | |
1710 | break; | |
1da177e4 LT |
1711 | case CISS_REPORT_LOG: |
1712 | case CISS_REPORT_PHYS: | |
7c832835 | 1713 | /* Talking to controller so It's a physical command |
1da177e4 | 1714 | mode = 00 target = 0. Nothing to write. |
7c832835 | 1715 | */ |
1da177e4 LT |
1716 | c->Request.CDBLen = 12; |
1717 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1718 | c->Request.Type.Direction = XFER_READ; | |
1719 | c->Request.Timeout = 0; | |
1720 | c->Request.CDB[0] = cmd; | |
7c832835 | 1721 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
1da177e4 LT |
1722 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
1723 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
1724 | c->Request.CDB[9] = size & 0xFF; | |
1725 | break; | |
1726 | ||
1727 | case CCISS_READ_CAPACITY: | |
1728 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1729 | c->Header.LUN.LogDev.Mode = 1; | |
1730 | c->Request.CDBLen = 10; | |
1731 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1732 | c->Request.Type.Direction = XFER_READ; | |
1733 | c->Request.Timeout = 0; | |
1734 | c->Request.CDB[0] = cmd; | |
7c832835 | 1735 | break; |
00988a35 MMOD |
1736 | case CCISS_READ_CAPACITY_16: |
1737 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1738 | c->Header.LUN.LogDev.Mode = 1; | |
1739 | c->Request.CDBLen = 16; | |
1740 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1741 | c->Request.Type.Direction = XFER_READ; | |
1742 | c->Request.Timeout = 0; | |
1743 | c->Request.CDB[0] = cmd; | |
1744 | c->Request.CDB[1] = 0x10; | |
1745 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
1746 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
1747 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
1748 | c->Request.CDB[13] = size & 0xFF; | |
1749 | c->Request.Timeout = 0; | |
1750 | c->Request.CDB[0] = cmd; | |
1751 | break; | |
1da177e4 LT |
1752 | case CCISS_CACHE_FLUSH: |
1753 | c->Request.CDBLen = 12; | |
1754 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1755 | c->Request.Type.Direction = XFER_WRITE; | |
1756 | c->Request.Timeout = 0; | |
1757 | c->Request.CDB[0] = BMIC_WRITE; | |
1758 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 1759 | break; |
1da177e4 LT |
1760 | default: |
1761 | printk(KERN_WARNING | |
7c832835 | 1762 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 1763 | return IO_ERROR; |
1da177e4 LT |
1764 | } |
1765 | } else if (cmd_type == TYPE_MSG) { | |
1766 | switch (cmd) { | |
7c832835 | 1767 | case 0: /* ABORT message */ |
3da8b713 | 1768 | c->Request.CDBLen = 12; |
1769 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1770 | c->Request.Type.Direction = XFER_WRITE; | |
1771 | c->Request.Timeout = 0; | |
7c832835 BH |
1772 | c->Request.CDB[0] = cmd; /* abort */ |
1773 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 1774 | /* buff contains the tag of the command to abort */ |
1775 | memcpy(&c->Request.CDB[4], buff, 8); | |
1776 | break; | |
7c832835 | 1777 | case 1: /* RESET message */ |
3da8b713 | 1778 | c->Request.CDBLen = 12; |
1779 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1780 | c->Request.Type.Direction = XFER_WRITE; | |
1781 | c->Request.Timeout = 0; | |
1782 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 BH |
1783 | c->Request.CDB[0] = cmd; /* reset */ |
1784 | c->Request.CDB[1] = 0x04; /* reset a LUN */ | |
00988a35 | 1785 | break; |
1da177e4 LT |
1786 | case 3: /* No-Op message */ |
1787 | c->Request.CDBLen = 1; | |
1788 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1789 | c->Request.Type.Direction = XFER_WRITE; | |
1790 | c->Request.Timeout = 0; | |
1791 | c->Request.CDB[0] = cmd; | |
1792 | break; | |
1793 | default: | |
1794 | printk(KERN_WARNING | |
7c832835 | 1795 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
1796 | return IO_ERROR; |
1797 | } | |
1798 | } else { | |
1799 | printk(KERN_WARNING | |
7c832835 | 1800 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
1801 | return IO_ERROR; |
1802 | } | |
1803 | /* Fill in the scatter gather information */ | |
1804 | if (size > 0) { | |
1805 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
1806 | buff, size, |
1807 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
1808 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
1809 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
1810 | c->SG[0].Len = size; | |
7c832835 | 1811 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
1812 | } |
1813 | return status; | |
1814 | } | |
7c832835 BH |
1815 | |
1816 | static int sendcmd_withirq(__u8 cmd, | |
1817 | int ctlr, | |
1818 | void *buff, | |
1819 | size_t size, | |
1820 | unsigned int use_unit_num, | |
1821 | unsigned int log_unit, __u8 page_code, int cmd_type) | |
1da177e4 LT |
1822 | { |
1823 | ctlr_info_t *h = hba[ctlr]; | |
1824 | CommandList_struct *c; | |
7c832835 | 1825 | u64bit buff_dma_handle; |
1da177e4 LT |
1826 | unsigned long flags; |
1827 | int return_status; | |
6e9a4738 | 1828 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1829 | |
1830 | if ((c = cmd_alloc(h, 0)) == NULL) | |
1da177e4 LT |
1831 | return -ENOMEM; |
1832 | return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 1833 | log_unit, page_code, NULL, cmd_type); |
1da177e4 LT |
1834 | if (return_status != IO_OK) { |
1835 | cmd_free(h, c, 0); | |
1836 | return return_status; | |
1837 | } | |
7c832835 | 1838 | resend_cmd2: |
1da177e4 | 1839 | c->waiting = &wait; |
7c832835 | 1840 | |
1da177e4 LT |
1841 | /* Put the request on the tail of the queue and send it */ |
1842 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1843 | addQ(&h->reqQ, c); | |
1844 | h->Qdepth++; | |
1845 | start_io(h); | |
1846 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 1847 | |
1da177e4 LT |
1848 | wait_for_completion(&wait); |
1849 | ||
7c832835 BH |
1850 | if (c->err_info->CommandStatus != 0) { /* an error has occurred */ |
1851 | switch (c->err_info->CommandStatus) { | |
1852 | case CMD_TARGET_STATUS: | |
1853 | printk(KERN_WARNING "cciss: cmd %p has " | |
1854 | " completed with errors\n", c); | |
1855 | if (c->err_info->ScsiStatus) { | |
1856 | printk(KERN_WARNING "cciss: cmd %p " | |
1857 | "has SCSI Status = %x\n", | |
1858 | c, c->err_info->ScsiStatus); | |
1859 | } | |
1da177e4 LT |
1860 | |
1861 | break; | |
7c832835 BH |
1862 | case CMD_DATA_UNDERRUN: |
1863 | case CMD_DATA_OVERRUN: | |
1da177e4 LT |
1864 | /* expected for inquire and report lun commands */ |
1865 | break; | |
7c832835 BH |
1866 | case CMD_INVALID: |
1867 | printk(KERN_WARNING "cciss: Cmd %p is " | |
1868 | "reported invalid\n", c); | |
1869 | return_status = IO_ERROR; | |
1da177e4 | 1870 | break; |
7c832835 BH |
1871 | case CMD_PROTOCOL_ERR: |
1872 | printk(KERN_WARNING "cciss: cmd %p has " | |
1873 | "protocol error \n", c); | |
1874 | return_status = IO_ERROR; | |
1da177e4 | 1875 | break; |
7c832835 BH |
1876 | case CMD_HARDWARE_ERR: |
1877 | printk(KERN_WARNING "cciss: cmd %p had " | |
1878 | " hardware error\n", c); | |
1879 | return_status = IO_ERROR; | |
1da177e4 | 1880 | break; |
7c832835 BH |
1881 | case CMD_CONNECTION_LOST: |
1882 | printk(KERN_WARNING "cciss: cmd %p had " | |
1883 | "connection lost\n", c); | |
1884 | return_status = IO_ERROR; | |
1da177e4 | 1885 | break; |
7c832835 BH |
1886 | case CMD_ABORTED: |
1887 | printk(KERN_WARNING "cciss: cmd %p was " | |
1888 | "aborted\n", c); | |
1889 | return_status = IO_ERROR; | |
1da177e4 | 1890 | break; |
7c832835 BH |
1891 | case CMD_ABORT_FAILED: |
1892 | printk(KERN_WARNING "cciss: cmd %p reports " | |
1893 | "abort failed\n", c); | |
1894 | return_status = IO_ERROR; | |
1895 | break; | |
1896 | case CMD_UNSOLICITED_ABORT: | |
1897 | printk(KERN_WARNING | |
1898 | "cciss%d: unsolicited abort %p\n", ctlr, c); | |
1899 | if (c->retry_count < MAX_CMD_RETRIES) { | |
1900 | printk(KERN_WARNING | |
1901 | "cciss%d: retrying %p\n", ctlr, c); | |
1902 | c->retry_count++; | |
1903 | /* erase the old error information */ | |
1904 | memset(c->err_info, 0, | |
1905 | sizeof(ErrorInfo_struct)); | |
1906 | return_status = IO_OK; | |
1907 | INIT_COMPLETION(wait); | |
1908 | goto resend_cmd2; | |
1909 | } | |
1910 | return_status = IO_ERROR; | |
1911 | break; | |
1912 | default: | |
1913 | printk(KERN_WARNING "cciss: cmd %p returned " | |
1914 | "unknown status %x\n", c, | |
1915 | c->err_info->CommandStatus); | |
1916 | return_status = IO_ERROR; | |
1da177e4 | 1917 | } |
7c832835 | 1918 | } |
1da177e4 | 1919 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
1920 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
1921 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
1922 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
1923 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
1da177e4 | 1924 | cmd_free(h, c, 0); |
7c832835 | 1925 | return return_status; |
1da177e4 | 1926 | } |
7c832835 | 1927 | |
1da177e4 | 1928 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
00988a35 | 1929 | int withirq, sector_t total_size, |
7c832835 BH |
1930 | unsigned int block_size, |
1931 | InquiryData_struct *inq_buff, | |
1932 | drive_info_struct *drv) | |
1da177e4 LT |
1933 | { |
1934 | int return_code; | |
00988a35 | 1935 | unsigned long t; |
00988a35 | 1936 | |
1da177e4 LT |
1937 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
1938 | if (withirq) | |
1939 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, | |
7c832835 BH |
1940 | inq_buff, sizeof(*inq_buff), 1, |
1941 | logvol, 0xC1, TYPE_CMD); | |
1da177e4 LT |
1942 | else |
1943 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, | |
7c832835 BH |
1944 | sizeof(*inq_buff), 1, logvol, 0xC1, NULL, |
1945 | TYPE_CMD); | |
1da177e4 | 1946 | if (return_code == IO_OK) { |
7c832835 | 1947 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 1948 | printk(KERN_WARNING |
7c832835 BH |
1949 | "cciss: reading geometry failed, volume " |
1950 | "does not support reading geometry\n"); | |
1da177e4 | 1951 | drv->heads = 255; |
7c832835 | 1952 | drv->sectors = 32; // Sectors per track |
1da177e4 | 1953 | } else { |
1da177e4 LT |
1954 | drv->heads = inq_buff->data_byte[6]; |
1955 | drv->sectors = inq_buff->data_byte[7]; | |
1956 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
1957 | drv->cylinders += inq_buff->data_byte[5]; | |
1958 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
1959 | } |
1960 | drv->block_size = block_size; | |
1961 | drv->nr_blocks = total_size; | |
1962 | t = drv->heads * drv->sectors; | |
1963 | if (t > 1) { | |
1964 | unsigned rem = sector_div(total_size, t); | |
1965 | if (rem) | |
1966 | total_size++; | |
1967 | drv->cylinders = total_size; | |
1da177e4 | 1968 | } |
7c832835 | 1969 | } else { /* Get geometry failed */ |
1da177e4 LT |
1970 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
1971 | } | |
cc088d10 | 1972 | printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n", |
7c832835 | 1973 | drv->heads, drv->sectors, drv->cylinders); |
1da177e4 | 1974 | } |
7c832835 | 1975 | |
1da177e4 | 1976 | static void |
00988a35 | 1977 | cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size, |
7c832835 | 1978 | unsigned int *block_size) |
1da177e4 | 1979 | { |
00988a35 | 1980 | ReadCapdata_struct *buf; |
1da177e4 | 1981 | int return_code; |
00988a35 MMOD |
1982 | buf = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); |
1983 | if (buf == NULL) { | |
1984 | printk(KERN_WARNING "cciss: out of memory\n"); | |
1985 | return; | |
1986 | } | |
1987 | memset(buf, 0, sizeof(ReadCapdata_struct)); | |
1da177e4 LT |
1988 | if (withirq) |
1989 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
1990 | ctlr, buf, sizeof(ReadCapdata_struct), |
1991 | 1, logvol, 0, TYPE_CMD); | |
1da177e4 LT |
1992 | else |
1993 | return_code = sendcmd(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
1994 | ctlr, buf, sizeof(ReadCapdata_struct), |
1995 | 1, logvol, 0, NULL, TYPE_CMD); | |
1da177e4 | 1996 | if (return_code == IO_OK) { |
00988a35 MMOD |
1997 | *total_size = be32_to_cpu(*(__u32 *) buf->total_size)+1; |
1998 | *block_size = be32_to_cpu(*(__u32 *) buf->block_size); | |
7c832835 | 1999 | } else { /* read capacity command failed */ |
1da177e4 LT |
2000 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
2001 | *total_size = 0; | |
2002 | *block_size = BLOCK_SIZE; | |
2003 | } | |
00988a35 | 2004 | if (*total_size != (__u32) 0) |
7b92aadf RD |
2005 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
2006 | (unsigned long long)*total_size, *block_size); | |
00988a35 MMOD |
2007 | kfree(buf); |
2008 | return; | |
2009 | } | |
2010 | ||
2011 | static void | |
2012 | cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) | |
2013 | { | |
2014 | ReadCapdata_struct_16 *buf; | |
2015 | int return_code; | |
2016 | buf = kmalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2017 | if (buf == NULL) { | |
2018 | printk(KERN_WARNING "cciss: out of memory\n"); | |
2019 | return; | |
2020 | } | |
2021 | memset(buf, 0, sizeof(ReadCapdata_struct_16)); | |
2022 | if (withirq) { | |
2023 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, | |
2024 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2025 | 1, logvol, 0, TYPE_CMD); | |
2026 | } | |
2027 | else { | |
2028 | return_code = sendcmd(CCISS_READ_CAPACITY_16, | |
2029 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2030 | 1, logvol, 0, NULL, TYPE_CMD); | |
2031 | } | |
2032 | if (return_code == IO_OK) { | |
2033 | *total_size = be64_to_cpu(*(__u64 *) buf->total_size)+1; | |
2034 | *block_size = be32_to_cpu(*(__u32 *) buf->block_size); | |
2035 | } else { /* read capacity command failed */ | |
2036 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
2037 | *total_size = 0; | |
2038 | *block_size = BLOCK_SIZE; | |
2039 | } | |
7b92aadf RD |
2040 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
2041 | (unsigned long long)*total_size, *block_size); | |
00988a35 | 2042 | kfree(buf); |
1da177e4 LT |
2043 | return; |
2044 | } | |
2045 | ||
1da177e4 LT |
2046 | static int cciss_revalidate(struct gendisk *disk) |
2047 | { | |
2048 | ctlr_info_t *h = get_host(disk); | |
2049 | drive_info_struct *drv = get_drv(disk); | |
2050 | int logvol; | |
7c832835 | 2051 | int FOUND = 0; |
1da177e4 | 2052 | unsigned int block_size; |
00988a35 | 2053 | sector_t total_size; |
1da177e4 LT |
2054 | InquiryData_struct *inq_buff = NULL; |
2055 | ||
7c832835 BH |
2056 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
2057 | if (h->drv[logvol].LunID == drv->LunID) { | |
2058 | FOUND = 1; | |
1da177e4 LT |
2059 | break; |
2060 | } | |
2061 | } | |
2062 | ||
7c832835 BH |
2063 | if (!FOUND) |
2064 | return 1; | |
1da177e4 | 2065 | |
7c832835 BH |
2066 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2067 | if (inq_buff == NULL) { | |
2068 | printk(KERN_WARNING "cciss: out of memory\n"); | |
7c832835 BH |
2069 | return 1; |
2070 | } | |
00988a35 MMOD |
2071 | if (h->cciss_read == CCISS_READ_10) { |
2072 | cciss_read_capacity(h->ctlr, logvol, 1, | |
2073 | &total_size, &block_size); | |
2074 | } else { | |
2075 | cciss_read_capacity_16(h->ctlr, logvol, 1, | |
2076 | &total_size, &block_size); | |
2077 | } | |
7c832835 BH |
2078 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, |
2079 | inq_buff, drv); | |
1da177e4 | 2080 | |
ad2b9312 | 2081 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
1da177e4 LT |
2082 | set_capacity(disk, drv->nr_blocks); |
2083 | ||
1da177e4 LT |
2084 | kfree(inq_buff); |
2085 | return 0; | |
2086 | } | |
2087 | ||
2088 | /* | |
2089 | * Wait polling for a command to complete. | |
2090 | * The memory mapped FIFO is polled for the completion. | |
2091 | * Used only at init time, interrupts from the HBA are disabled. | |
2092 | */ | |
2093 | static unsigned long pollcomplete(int ctlr) | |
2094 | { | |
2095 | unsigned long done; | |
2096 | int i; | |
2097 | ||
2098 | /* Wait (up to 20 seconds) for a command to complete */ | |
2099 | ||
2100 | for (i = 20 * HZ; i > 0; i--) { | |
2101 | done = hba[ctlr]->access.command_completed(hba[ctlr]); | |
86e84862 NA |
2102 | if (done == FIFO_EMPTY) |
2103 | schedule_timeout_uninterruptible(1); | |
2104 | else | |
e2019b58 | 2105 | return done; |
1da177e4 LT |
2106 | } |
2107 | /* Invalid address to tell caller we ran out of time */ | |
2108 | return 1; | |
2109 | } | |
3da8b713 | 2110 | |
2111 | static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) | |
2112 | { | |
2113 | /* We get in here if sendcmd() is polling for completions | |
7c832835 BH |
2114 | and gets some command back that it wasn't expecting -- |
2115 | something other than that which it just sent down. | |
2116 | Ordinarily, that shouldn't happen, but it can happen when | |
3da8b713 | 2117 | the scsi tape stuff gets into error handling mode, and |
7c832835 | 2118 | starts using sendcmd() to try to abort commands and |
3da8b713 | 2119 | reset tape drives. In that case, sendcmd may pick up |
2120 | completions of commands that were sent to logical drives | |
7c832835 | 2121 | through the block i/o system, or cciss ioctls completing, etc. |
3da8b713 | 2122 | In that case, we need to save those completions for later |
2123 | processing by the interrupt handler. | |
7c832835 | 2124 | */ |
3da8b713 | 2125 | |
2126 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2127 | struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects; |
3da8b713 | 2128 | |
2129 | /* If it's not the scsi tape stuff doing error handling, (abort */ | |
2130 | /* or reset) then we don't expect anything weird. */ | |
2131 | if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) { | |
2132 | #endif | |
7c832835 BH |
2133 | printk(KERN_WARNING "cciss cciss%d: SendCmd " |
2134 | "Invalid command list address returned! (%lx)\n", | |
2135 | ctlr, complete); | |
3da8b713 | 2136 | /* not much we can do. */ |
2137 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2138 | return 1; | |
2139 | } | |
2140 | ||
2141 | /* We've sent down an abort or reset, but something else | |
2142 | has completed */ | |
f880632f | 2143 | if (srl->ncompletions >= (hba[ctlr]->nr_cmds + 2)) { |
3da8b713 | 2144 | /* Uh oh. No room to save it for later... */ |
2145 | printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, " | |
7c832835 | 2146 | "reject list overflow, command lost!\n", ctlr); |
3da8b713 | 2147 | return 1; |
2148 | } | |
2149 | /* Save it for later */ | |
2150 | srl->complete[srl->ncompletions] = complete; | |
2151 | srl->ncompletions++; | |
2152 | #endif | |
2153 | return 0; | |
2154 | } | |
2155 | ||
1da177e4 | 2156 | /* |
7c832835 BH |
2157 | * Send a command to the controller, and wait for it to complete. |
2158 | * Only used at init time. | |
1da177e4 | 2159 | */ |
7c832835 BH |
2160 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, |
2161 | 1: address logical volume log_unit, | |
2162 | 2: periph device address is scsi3addr */ | |
2163 | unsigned int log_unit, | |
2164 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) | |
1da177e4 LT |
2165 | { |
2166 | CommandList_struct *c; | |
2167 | int i; | |
2168 | unsigned long complete; | |
7c832835 | 2169 | ctlr_info_t *info_p = hba[ctlr]; |
1da177e4 | 2170 | u64bit buff_dma_handle; |
3da8b713 | 2171 | int status, done = 0; |
1da177e4 LT |
2172 | |
2173 | if ((c = cmd_alloc(info_p, 1)) == NULL) { | |
2174 | printk(KERN_WARNING "cciss: unable to get memory"); | |
e2019b58 | 2175 | return IO_ERROR; |
1da177e4 LT |
2176 | } |
2177 | status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 2178 | log_unit, page_code, scsi3addr, cmd_type); |
1da177e4 LT |
2179 | if (status != IO_OK) { |
2180 | cmd_free(info_p, c, 1); | |
2181 | return status; | |
2182 | } | |
7c832835 | 2183 | resend_cmd1: |
1da177e4 | 2184 | /* |
7c832835 BH |
2185 | * Disable interrupt |
2186 | */ | |
1da177e4 LT |
2187 | #ifdef CCISS_DEBUG |
2188 | printk(KERN_DEBUG "cciss: turning intr off\n"); | |
7c832835 BH |
2189 | #endif /* CCISS_DEBUG */ |
2190 | info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF); | |
2191 | ||
1da177e4 | 2192 | /* Make sure there is room in the command FIFO */ |
7c832835 | 2193 | /* Actually it should be completely empty at this time */ |
3da8b713 | 2194 | /* unless we are in here doing error handling for the scsi */ |
2195 | /* tape side of the driver. */ | |
7c832835 | 2196 | for (i = 200000; i > 0; i--) { |
1da177e4 | 2197 | /* if fifo isn't full go */ |
7c832835 BH |
2198 | if (!(info_p->access.fifo_full(info_p))) { |
2199 | ||
2200 | break; | |
2201 | } | |
2202 | udelay(10); | |
2203 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," | |
2204 | " waiting!\n", ctlr); | |
2205 | } | |
2206 | /* | |
2207 | * Send the cmd | |
2208 | */ | |
2209 | info_p->access.submit_command(info_p, c); | |
3da8b713 | 2210 | done = 0; |
2211 | do { | |
2212 | complete = pollcomplete(ctlr); | |
1da177e4 LT |
2213 | |
2214 | #ifdef CCISS_DEBUG | |
3da8b713 | 2215 | printk(KERN_DEBUG "cciss: command completed\n"); |
7c832835 | 2216 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2217 | |
3da8b713 | 2218 | if (complete == 1) { |
7c832835 BH |
2219 | printk(KERN_WARNING |
2220 | "cciss cciss%d: SendCmd Timeout out, " | |
2221 | "No command list address returned!\n", ctlr); | |
3da8b713 | 2222 | status = IO_ERROR; |
2223 | done = 1; | |
2224 | break; | |
2225 | } | |
2226 | ||
2227 | /* This will need to change for direct lookup completions */ | |
7c832835 BH |
2228 | if ((complete & CISS_ERROR_BIT) |
2229 | && (complete & ~CISS_ERROR_BIT) == c->busaddr) { | |
2230 | /* if data overrun or underun on Report command | |
2231 | ignore it | |
2232 | */ | |
1da177e4 LT |
2233 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || |
2234 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || | |
2235 | (c->Request.CDB[0] == CISS_INQUIRY)) && | |
7c832835 BH |
2236 | ((c->err_info->CommandStatus == |
2237 | CMD_DATA_OVERRUN) || | |
2238 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN) | |
2239 | )) { | |
1da177e4 LT |
2240 | complete = c->busaddr; |
2241 | } else { | |
2242 | if (c->err_info->CommandStatus == | |
7c832835 | 2243 | CMD_UNSOLICITED_ABORT) { |
1da177e4 | 2244 | printk(KERN_WARNING "cciss%d: " |
7c832835 BH |
2245 | "unsolicited abort %p\n", |
2246 | ctlr, c); | |
1da177e4 LT |
2247 | if (c->retry_count < MAX_CMD_RETRIES) { |
2248 | printk(KERN_WARNING | |
7c832835 BH |
2249 | "cciss%d: retrying %p\n", |
2250 | ctlr, c); | |
1da177e4 LT |
2251 | c->retry_count++; |
2252 | /* erase the old error */ | |
2253 | /* information */ | |
2254 | memset(c->err_info, 0, | |
7c832835 BH |
2255 | sizeof |
2256 | (ErrorInfo_struct)); | |
1da177e4 LT |
2257 | goto resend_cmd1; |
2258 | } else { | |
2259 | printk(KERN_WARNING | |
7c832835 BH |
2260 | "cciss%d: retried %p too " |
2261 | "many times\n", ctlr, c); | |
1da177e4 LT |
2262 | status = IO_ERROR; |
2263 | goto cleanup1; | |
2264 | } | |
7c832835 BH |
2265 | } else if (c->err_info->CommandStatus == |
2266 | CMD_UNABORTABLE) { | |
2267 | printk(KERN_WARNING | |
2268 | "cciss%d: command could not be aborted.\n", | |
2269 | ctlr); | |
3da8b713 | 2270 | status = IO_ERROR; |
2271 | goto cleanup1; | |
1da177e4 LT |
2272 | } |
2273 | printk(KERN_WARNING "ciss ciss%d: sendcmd" | |
7c832835 BH |
2274 | " Error %x \n", ctlr, |
2275 | c->err_info->CommandStatus); | |
1da177e4 | 2276 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
7c832835 BH |
2277 | " offensive info\n" |
2278 | " size %x\n num %x value %x\n", | |
2279 | ctlr, | |
2280 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2281 | offense_size, | |
2282 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2283 | offense_num, | |
2284 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2285 | offense_value); | |
1da177e4 LT |
2286 | status = IO_ERROR; |
2287 | goto cleanup1; | |
2288 | } | |
2289 | } | |
3da8b713 | 2290 | /* This will need changing for direct lookup completions */ |
7c832835 | 2291 | if (complete != c->busaddr) { |
3da8b713 | 2292 | if (add_sendcmd_reject(cmd, ctlr, complete) != 0) { |
7c832835 | 2293 | BUG(); /* we are pretty much hosed if we get here. */ |
3da8b713 | 2294 | } |
2295 | continue; | |
7c832835 | 2296 | } else |
3da8b713 | 2297 | done = 1; |
7c832835 BH |
2298 | } while (!done); |
2299 | ||
2300 | cleanup1: | |
1da177e4 | 2301 | /* unlock the data buffer from DMA */ |
bb2a37bf MM |
2302 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2303 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
1da177e4 | 2304 | pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val, |
7c832835 | 2305 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
3da8b713 | 2306 | #ifdef CONFIG_CISS_SCSI_TAPE |
2307 | /* if we saved some commands for later, process them now. */ | |
2308 | if (info_p->scsi_rejects.ncompletions > 0) | |
7d12e780 | 2309 | do_cciss_intr(0, info_p); |
3da8b713 | 2310 | #endif |
1da177e4 | 2311 | cmd_free(info_p, c, 1); |
e2019b58 | 2312 | return status; |
7c832835 BH |
2313 | } |
2314 | ||
1da177e4 LT |
2315 | /* |
2316 | * Map (physical) PCI mem into (virtual) kernel space | |
2317 | */ | |
2318 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2319 | { | |
7c832835 BH |
2320 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2321 | ulong page_offs = ((ulong) base) - page_base; | |
2322 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2323 | |
7c832835 | 2324 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2325 | } |
2326 | ||
7c832835 BH |
2327 | /* |
2328 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2329 | * the Q to wait for completion. | |
2330 | */ | |
2331 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
2332 | { |
2333 | CommandList_struct *c; | |
7c832835 BH |
2334 | |
2335 | while ((c = h->reqQ) != NULL) { | |
1da177e4 LT |
2336 | /* can't do anything if fifo is full */ |
2337 | if ((h->access.fifo_full(h))) { | |
2338 | printk(KERN_WARNING "cciss: fifo full\n"); | |
2339 | break; | |
2340 | } | |
2341 | ||
7c832835 | 2342 | /* Get the first entry from the Request Q */ |
1da177e4 LT |
2343 | removeQ(&(h->reqQ), c); |
2344 | h->Qdepth--; | |
7c832835 BH |
2345 | |
2346 | /* Tell the controller execute command */ | |
1da177e4 | 2347 | h->access.submit_command(h, c); |
7c832835 BH |
2348 | |
2349 | /* Put job onto the completed Q */ | |
2350 | addQ(&(h->cmpQ), c); | |
1da177e4 LT |
2351 | } |
2352 | } | |
7c832835 | 2353 | |
1da177e4 LT |
2354 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
2355 | /* Zeros out the error record and then resends the command back */ | |
2356 | /* to the controller */ | |
7c832835 | 2357 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
2358 | { |
2359 | /* erase the old error information */ | |
2360 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2361 | ||
2362 | /* add it to software queue and then send it to the controller */ | |
7c832835 | 2363 | addQ(&(h->reqQ), c); |
1da177e4 | 2364 | h->Qdepth++; |
7c832835 | 2365 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
2366 | h->maxQsinceinit = h->Qdepth; |
2367 | ||
2368 | start_io(h); | |
2369 | } | |
a9925a06 | 2370 | |
7c832835 | 2371 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
2372 | * buffers for the completed job. Note that this function does not need |
2373 | * to hold the hba/queue lock. | |
7c832835 BH |
2374 | */ |
2375 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
2376 | int timeout) | |
1da177e4 LT |
2377 | { |
2378 | int status = 1; | |
1da177e4 | 2379 | int retry_cmd = 0; |
7c832835 | 2380 | |
1da177e4 | 2381 | if (timeout) |
7c832835 | 2382 | status = 0; |
1da177e4 | 2383 | |
7c832835 BH |
2384 | if (cmd->err_info->CommandStatus != 0) { /* an error has occurred */ |
2385 | switch (cmd->err_info->CommandStatus) { | |
1da177e4 | 2386 | unsigned char sense_key; |
7c832835 BH |
2387 | case CMD_TARGET_STATUS: |
2388 | status = 0; | |
2389 | ||
2390 | if (cmd->err_info->ScsiStatus == 0x02) { | |
2391 | printk(KERN_WARNING "cciss: cmd %p " | |
2392 | "has CHECK CONDITION " | |
2393 | " byte 2 = 0x%x\n", cmd, | |
2394 | cmd->err_info->SenseInfo[2] | |
2395 | ); | |
2396 | /* check the sense key */ | |
2397 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
2398 | /* no status or recovered error */ | |
2399 | if ((sense_key == 0x0) || (sense_key == 0x1)) { | |
2400 | status = 1; | |
1da177e4 | 2401 | } |
7c832835 BH |
2402 | } else { |
2403 | printk(KERN_WARNING "cciss: cmd %p " | |
2404 | "has SCSI Status 0x%x\n", | |
2405 | cmd, cmd->err_info->ScsiStatus); | |
2406 | } | |
1da177e4 | 2407 | break; |
7c832835 BH |
2408 | case CMD_DATA_UNDERRUN: |
2409 | printk(KERN_WARNING "cciss: cmd %p has" | |
2410 | " completed with data underrun " | |
2411 | "reported\n", cmd); | |
1da177e4 | 2412 | break; |
7c832835 BH |
2413 | case CMD_DATA_OVERRUN: |
2414 | printk(KERN_WARNING "cciss: cmd %p has" | |
2415 | " completed with data overrun " | |
2416 | "reported\n", cmd); | |
1da177e4 | 2417 | break; |
7c832835 BH |
2418 | case CMD_INVALID: |
2419 | printk(KERN_WARNING "cciss: cmd %p is " | |
2420 | "reported invalid\n", cmd); | |
2421 | status = 0; | |
1da177e4 | 2422 | break; |
7c832835 BH |
2423 | case CMD_PROTOCOL_ERR: |
2424 | printk(KERN_WARNING "cciss: cmd %p has " | |
2425 | "protocol error \n", cmd); | |
2426 | status = 0; | |
1da177e4 | 2427 | break; |
7c832835 BH |
2428 | case CMD_HARDWARE_ERR: |
2429 | printk(KERN_WARNING "cciss: cmd %p had " | |
2430 | " hardware error\n", cmd); | |
2431 | status = 0; | |
1da177e4 | 2432 | break; |
7c832835 BH |
2433 | case CMD_CONNECTION_LOST: |
2434 | printk(KERN_WARNING "cciss: cmd %p had " | |
2435 | "connection lost\n", cmd); | |
2436 | status = 0; | |
1da177e4 | 2437 | break; |
7c832835 BH |
2438 | case CMD_ABORTED: |
2439 | printk(KERN_WARNING "cciss: cmd %p was " | |
2440 | "aborted\n", cmd); | |
2441 | status = 0; | |
1da177e4 | 2442 | break; |
7c832835 BH |
2443 | case CMD_ABORT_FAILED: |
2444 | printk(KERN_WARNING "cciss: cmd %p reports " | |
2445 | "abort failed\n", cmd); | |
2446 | status = 0; | |
1da177e4 | 2447 | break; |
7c832835 BH |
2448 | case CMD_UNSOLICITED_ABORT: |
2449 | printk(KERN_WARNING "cciss%d: unsolicited " | |
2450 | "abort %p\n", h->ctlr, cmd); | |
2451 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
2452 | retry_cmd = 1; | |
2453 | printk(KERN_WARNING | |
2454 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
2455 | cmd->retry_count++; | |
2456 | } else | |
2457 | printk(KERN_WARNING | |
2458 | "cciss%d: %p retried too " | |
2459 | "many times\n", h->ctlr, cmd); | |
2460 | status = 0; | |
2461 | break; | |
2462 | case CMD_TIMEOUT: | |
2463 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
2464 | status = 0; | |
2465 | break; | |
2466 | default: | |
2467 | printk(KERN_WARNING "cciss: cmd %p returned " | |
2468 | "unknown status %x\n", cmd, | |
2469 | cmd->err_info->CommandStatus); | |
2470 | status = 0; | |
1da177e4 LT |
2471 | } |
2472 | } | |
2473 | /* We need to return this command */ | |
7c832835 BH |
2474 | if (retry_cmd) { |
2475 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 2476 | return; |
7c832835 | 2477 | } |
1da177e4 | 2478 | |
a9925a06 JA |
2479 | cmd->rq->completion_data = cmd; |
2480 | cmd->rq->errors = status; | |
2056a782 | 2481 | blk_add_trace_rq(cmd->rq->q, cmd->rq, BLK_TA_COMPLETE); |
a9925a06 | 2482 | blk_complete_request(cmd->rq); |
1da177e4 LT |
2483 | } |
2484 | ||
7c832835 BH |
2485 | /* |
2486 | * Get a request and submit it to the controller. | |
1da177e4 LT |
2487 | */ |
2488 | static void do_cciss_request(request_queue_t *q) | |
2489 | { | |
7c832835 | 2490 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 2491 | CommandList_struct *c; |
00988a35 MMOD |
2492 | sector_t start_blk; |
2493 | int seg; | |
1da177e4 LT |
2494 | struct request *creq; |
2495 | u64bit temp64; | |
2496 | struct scatterlist tmp_sg[MAXSGENTRIES]; | |
2497 | drive_info_struct *drv; | |
2498 | int i, dir; | |
2499 | ||
2500 | /* We call start_io here in case there is a command waiting on the | |
2501 | * queue that has not been sent. | |
7c832835 | 2502 | */ |
1da177e4 LT |
2503 | if (blk_queue_plugged(q)) |
2504 | goto startio; | |
2505 | ||
7c832835 | 2506 | queue: |
1da177e4 LT |
2507 | creq = elv_next_request(q); |
2508 | if (!creq) | |
2509 | goto startio; | |
2510 | ||
089fe1b2 | 2511 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
1da177e4 | 2512 | |
7c832835 | 2513 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
2514 | goto full; |
2515 | ||
2516 | blkdev_dequeue_request(creq); | |
2517 | ||
2518 | spin_unlock_irq(q->queue_lock); | |
2519 | ||
2520 | c->cmd_type = CMD_RWREQ; | |
2521 | c->rq = creq; | |
7c832835 BH |
2522 | |
2523 | /* fill in the request */ | |
1da177e4 | 2524 | drv = creq->rq_disk->private_data; |
7c832835 | 2525 | c->Header.ReplyQueue = 0; // unused in simple mode |
33079b21 MM |
2526 | /* got command from pool, so use the command block index instead */ |
2527 | /* for direct lookups. */ | |
2528 | /* The first 2 bits are reserved for controller error reporting. */ | |
2529 | c->Header.Tag.lower = (c->cmdindex << 3); | |
7c832835 BH |
2530 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
2531 | c->Header.LUN.LogDev.VolId = drv->LunID; | |
1da177e4 | 2532 | c->Header.LUN.LogDev.Mode = 1; |
7c832835 BH |
2533 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
2534 | c->Request.Type.Type = TYPE_CMD; // It is a command. | |
2535 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2536 | c->Request.Type.Direction = | |
00988a35 | 2537 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
7c832835 BH |
2538 | c->Request.Timeout = 0; // Don't time out |
2539 | c->Request.CDB[0] = | |
00988a35 | 2540 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
1da177e4 LT |
2541 | start_blk = creq->sector; |
2542 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2543 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", (int)creq->sector, |
2544 | (int)creq->nr_sectors); | |
2545 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
2546 | |
2547 | seg = blk_rq_map_sg(q, creq, tmp_sg); | |
2548 | ||
7c832835 | 2549 | /* get the DMA records for the setup */ |
1da177e4 LT |
2550 | if (c->Request.Type.Direction == XFER_READ) |
2551 | dir = PCI_DMA_FROMDEVICE; | |
2552 | else | |
2553 | dir = PCI_DMA_TODEVICE; | |
2554 | ||
7c832835 | 2555 | for (i = 0; i < seg; i++) { |
1da177e4 LT |
2556 | c->SG[i].Len = tmp_sg[i].length; |
2557 | temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page, | |
7c832835 BH |
2558 | tmp_sg[i].offset, |
2559 | tmp_sg[i].length, dir); | |
1da177e4 | 2560 | c->SG[i].Addr.lower = temp64.val32.lower; |
7c832835 BH |
2561 | c->SG[i].Addr.upper = temp64.val32.upper; |
2562 | c->SG[i].Ext = 0; // we are not chaining | |
1da177e4 | 2563 | } |
7c832835 BH |
2564 | /* track how many SG entries we are using */ |
2565 | if (seg > h->maxSG) | |
2566 | h->maxSG = seg; | |
1da177e4 LT |
2567 | |
2568 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2569 | printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", |
2570 | creq->nr_sectors, seg); | |
2571 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
2572 | |
2573 | c->Header.SGList = c->Header.SGTotal = seg; | |
00988a35 MMOD |
2574 | if(h->cciss_read == CCISS_READ_10) { |
2575 | c->Request.CDB[1] = 0; | |
2576 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB | |
2577 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; | |
2578 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
2579 | c->Request.CDB[5] = start_blk & 0xff; | |
2580 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB | |
2581 | c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff; | |
2582 | c->Request.CDB[8] = creq->nr_sectors & 0xff; | |
2583 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; | |
2584 | } else { | |
2585 | c->Request.CDBLen = 16; | |
2586 | c->Request.CDB[1]= 0; | |
2587 | c->Request.CDB[2]= (start_blk >> 56) & 0xff; //MSB | |
2588 | c->Request.CDB[3]= (start_blk >> 48) & 0xff; | |
2589 | c->Request.CDB[4]= (start_blk >> 40) & 0xff; | |
2590 | c->Request.CDB[5]= (start_blk >> 32) & 0xff; | |
2591 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; | |
2592 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
2593 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
2594 | c->Request.CDB[9]= start_blk & 0xff; | |
2595 | c->Request.CDB[10]= (creq->nr_sectors >> 24) & 0xff; | |
2596 | c->Request.CDB[11]= (creq->nr_sectors >> 16) & 0xff; | |
2597 | c->Request.CDB[12]= (creq->nr_sectors >> 8) & 0xff; | |
2598 | c->Request.CDB[13]= creq->nr_sectors & 0xff; | |
2599 | c->Request.CDB[14] = c->Request.CDB[15] = 0; | |
2600 | } | |
1da177e4 LT |
2601 | |
2602 | spin_lock_irq(q->queue_lock); | |
2603 | ||
7c832835 | 2604 | addQ(&(h->reqQ), c); |
1da177e4 | 2605 | h->Qdepth++; |
7c832835 BH |
2606 | if (h->Qdepth > h->maxQsinceinit) |
2607 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
2608 | |
2609 | goto queue; | |
00988a35 | 2610 | full: |
1da177e4 | 2611 | blk_stop_queue(q); |
00988a35 | 2612 | startio: |
1da177e4 LT |
2613 | /* We will already have the driver lock here so not need |
2614 | * to lock it. | |
7c832835 | 2615 | */ |
1da177e4 LT |
2616 | start_io(h); |
2617 | } | |
2618 | ||
3da8b713 | 2619 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
2620 | { | |
2621 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2622 | /* Any rejects from sendcmd() lying around? Process them first */ | |
2623 | if (h->scsi_rejects.ncompletions == 0) | |
2624 | return h->access.command_completed(h); | |
2625 | else { | |
2626 | struct sendcmd_reject_list *srl; | |
2627 | int n; | |
2628 | srl = &h->scsi_rejects; | |
2629 | n = --srl->ncompletions; | |
2630 | /* printk("cciss%d: processing saved reject\n", h->ctlr); */ | |
2631 | printk("p"); | |
2632 | return srl->complete[n]; | |
2633 | } | |
2634 | #else | |
2635 | return h->access.command_completed(h); | |
2636 | #endif | |
2637 | } | |
2638 | ||
2639 | static inline int interrupt_pending(ctlr_info_t *h) | |
2640 | { | |
2641 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2642 | return (h->access.intr_pending(h) |
3da8b713 | 2643 | || (h->scsi_rejects.ncompletions > 0)); |
2644 | #else | |
2645 | return h->access.intr_pending(h); | |
2646 | #endif | |
2647 | } | |
2648 | ||
2649 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
2650 | { | |
2651 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
2652 | return (((h->access.intr_pending(h) == 0) || |
2653 | (h->interrupts_enabled == 0)) | |
2654 | && (h->scsi_rejects.ncompletions == 0)); | |
3da8b713 | 2655 | #else |
7c832835 | 2656 | return (((h->access.intr_pending(h) == 0) || |
3da8b713 | 2657 | (h->interrupts_enabled == 0))); |
2658 | #endif | |
2659 | } | |
2660 | ||
7d12e780 | 2661 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
1da177e4 LT |
2662 | { |
2663 | ctlr_info_t *h = dev_id; | |
2664 | CommandList_struct *c; | |
2665 | unsigned long flags; | |
33079b21 | 2666 | __u32 a, a1, a2; |
1da177e4 | 2667 | |
3da8b713 | 2668 | if (interrupt_not_for_us(h)) |
1da177e4 | 2669 | return IRQ_NONE; |
1da177e4 LT |
2670 | /* |
2671 | * If there are completed commands in the completion queue, | |
2672 | * we had better do something about it. | |
2673 | */ | |
2674 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 2675 | while (interrupt_pending(h)) { |
7c832835 | 2676 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
1da177e4 | 2677 | a1 = a; |
33079b21 MM |
2678 | if ((a & 0x04)) { |
2679 | a2 = (a >> 3); | |
f880632f | 2680 | if (a2 >= h->nr_cmds) { |
7c832835 BH |
2681 | printk(KERN_WARNING |
2682 | "cciss: controller cciss%d failed, stopping.\n", | |
2683 | h->ctlr); | |
33079b21 MM |
2684 | fail_all_cmds(h->ctlr); |
2685 | return IRQ_HANDLED; | |
2686 | } | |
2687 | ||
2688 | c = h->cmd_pool + a2; | |
2689 | a = c->busaddr; | |
2690 | ||
2691 | } else { | |
7c832835 | 2692 | a &= ~3; |
33079b21 | 2693 | if ((c = h->cmpQ) == NULL) { |
7c832835 BH |
2694 | printk(KERN_WARNING |
2695 | "cciss: Completion of %08x ignored\n", | |
2696 | a1); | |
2697 | continue; | |
2698 | } | |
2699 | while (c->busaddr != a) { | |
2700 | c = c->next; | |
2701 | if (c == h->cmpQ) | |
2702 | break; | |
2703 | } | |
33079b21 | 2704 | } |
1da177e4 LT |
2705 | /* |
2706 | * If we've found the command, take it off the | |
2707 | * completion Q and free it | |
2708 | */ | |
7c832835 | 2709 | if (c->busaddr == a) { |
1da177e4 LT |
2710 | removeQ(&h->cmpQ, c); |
2711 | if (c->cmd_type == CMD_RWREQ) { | |
2712 | complete_command(h, c, 0); | |
2713 | } else if (c->cmd_type == CMD_IOCTL_PEND) { | |
2714 | complete(c->waiting); | |
2715 | } | |
2716 | # ifdef CONFIG_CISS_SCSI_TAPE | |
2717 | else if (c->cmd_type == CMD_SCSI) | |
2718 | complete_scsi_command(c, 0, a1); | |
2719 | # endif | |
2720 | continue; | |
2721 | } | |
2722 | } | |
2723 | } | |
2724 | ||
1da177e4 LT |
2725 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2726 | return IRQ_HANDLED; | |
2727 | } | |
7c832835 BH |
2728 | |
2729 | /* | |
d14c4ab5 | 2730 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 2731 | * the io functions. |
7c832835 | 2732 | * This is for debug only. |
1da177e4 LT |
2733 | */ |
2734 | #ifdef CCISS_DEBUG | |
7c832835 | 2735 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 LT |
2736 | { |
2737 | int i; | |
2738 | char temp_name[17]; | |
2739 | ||
2740 | printk("Controller Configuration information\n"); | |
2741 | printk("------------------------------------\n"); | |
7c832835 | 2742 | for (i = 0; i < 4; i++) |
1da177e4 | 2743 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
2744 | temp_name[4] = '\0'; |
2745 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 2746 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
2747 | printk(" Transport methods supported = 0x%x\n", |
2748 | readl(&(tb->TransportSupport))); | |
2749 | printk(" Transport methods active = 0x%x\n", | |
2750 | readl(&(tb->TransportActive))); | |
2751 | printk(" Requested transport Method = 0x%x\n", | |
2752 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 2753 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 2754 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 2755 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
2756 | readl(&(tb->HostWrite.CoalIntCount))); |
2757 | printk(" Max outstanding commands = 0x%d\n", | |
2758 | readl(&(tb->CmdsOutMax))); | |
2759 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
2760 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
2761 | temp_name[i] = readb(&(tb->ServerName[i])); |
2762 | temp_name[16] = '\0'; | |
2763 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 2764 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
1da177e4 | 2765 | } |
7c832835 | 2766 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2767 | |
7c832835 | 2768 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
2769 | { |
2770 | int i, offset, mem_type, bar_type; | |
7c832835 | 2771 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
2772 | return 0; |
2773 | offset = 0; | |
7c832835 BH |
2774 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
2775 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
2776 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
2777 | offset += 4; | |
2778 | else { | |
2779 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 2780 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 2781 | switch (mem_type) { |
7c832835 BH |
2782 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
2783 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
2784 | offset += 4; /* 32 bit */ | |
2785 | break; | |
2786 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
2787 | offset += 8; | |
2788 | break; | |
2789 | default: /* reserved in PCI 2.2 */ | |
2790 | printk(KERN_WARNING | |
2791 | "Base address is invalid\n"); | |
2792 | return -1; | |
1da177e4 LT |
2793 | break; |
2794 | } | |
2795 | } | |
7c832835 BH |
2796 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
2797 | return i + 1; | |
1da177e4 LT |
2798 | } |
2799 | return -1; | |
2800 | } | |
2801 | ||
fb86a35b MM |
2802 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
2803 | * controllers that are capable. If not, we use IO-APIC mode. | |
2804 | */ | |
2805 | ||
7c832835 BH |
2806 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
2807 | struct pci_dev *pdev, __u32 board_id) | |
fb86a35b MM |
2808 | { |
2809 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
2810 | int err; |
2811 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
2812 | {0, 2}, {0, 3} | |
2813 | }; | |
fb86a35b MM |
2814 | |
2815 | /* Some boards advertise MSI but don't really support it */ | |
2816 | if ((board_id == 0x40700E11) || | |
7c832835 BH |
2817 | (board_id == 0x40800E11) || |
2818 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
fb86a35b MM |
2819 | goto default_int_mode; |
2820 | ||
7c832835 BH |
2821 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
2822 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); | |
2823 | if (!err) { | |
2824 | c->intr[0] = cciss_msix_entries[0].vector; | |
2825 | c->intr[1] = cciss_msix_entries[1].vector; | |
2826 | c->intr[2] = cciss_msix_entries[2].vector; | |
2827 | c->intr[3] = cciss_msix_entries[3].vector; | |
2828 | c->msix_vector = 1; | |
2829 | return; | |
2830 | } | |
2831 | if (err > 0) { | |
2832 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
2833 | "available\n", err); | |
2834 | } else { | |
2835 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
2836 | err); | |
2837 | } | |
2838 | } | |
2839 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
2840 | if (!pci_enable_msi(pdev)) { | |
2841 | c->intr[SIMPLE_MODE_INT] = pdev->irq; | |
2842 | c->msi_vector = 1; | |
2843 | return; | |
2844 | } else { | |
2845 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
2846 | c->intr[SIMPLE_MODE_INT] = pdev->irq; | |
2847 | return; | |
2848 | } | |
2849 | } | |
2850 | default_int_mode: | |
2851 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 2852 | /* if we get here we're going to use the default interrupt mode */ |
7c832835 | 2853 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
fb86a35b MM |
2854 | return; |
2855 | } | |
2856 | ||
1da177e4 LT |
2857 | static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
2858 | { | |
2859 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
2860 | __u32 board_id, scratchpad = 0; | |
2861 | __u64 cfg_offset; | |
2862 | __u32 cfg_base_addr; | |
2863 | __u64 cfg_base_addr_index; | |
c33ac89b | 2864 | int i, err; |
1da177e4 LT |
2865 | |
2866 | /* check to see if controller has been disabled */ | |
2867 | /* BEFORE trying to enable it */ | |
7c832835 BH |
2868 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
2869 | if (!(command & 0x02)) { | |
2870 | printk(KERN_WARNING | |
2871 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 2872 | return -ENODEV; |
1da177e4 LT |
2873 | } |
2874 | ||
c33ac89b | 2875 | err = pci_enable_device(pdev); |
7c832835 | 2876 | if (err) { |
1da177e4 | 2877 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 2878 | return err; |
1da177e4 | 2879 | } |
1da177e4 | 2880 | |
4e570309 BH |
2881 | err = pci_request_regions(pdev, "cciss"); |
2882 | if (err) { | |
2883 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 2884 | "aborting\n"); |
4e570309 BH |
2885 | goto err_out_disable_pdev; |
2886 | } | |
2887 | ||
1da177e4 LT |
2888 | subsystem_vendor_id = pdev->subsystem_vendor; |
2889 | subsystem_device_id = pdev->subsystem_device; | |
2890 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
7c832835 | 2891 | subsystem_vendor_id); |
1da177e4 | 2892 | |
1da177e4 LT |
2893 | #ifdef CCISS_DEBUG |
2894 | printk("command = %x\n", command); | |
2895 | printk("irq = %x\n", pdev->irq); | |
2896 | printk("board_id = %x\n", board_id); | |
7c832835 | 2897 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2898 | |
fb86a35b MM |
2899 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
2900 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
2901 | */ | |
2902 | cciss_interrupt_mode(c, pdev, board_id); | |
1da177e4 LT |
2903 | |
2904 | /* | |
2905 | * Memory base addr is first addr , the second points to the config | |
7c832835 | 2906 | * table |
1da177e4 LT |
2907 | */ |
2908 | ||
7c832835 | 2909 | c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */ |
1da177e4 LT |
2910 | #ifdef CCISS_DEBUG |
2911 | printk("address 0 = %x\n", c->paddr); | |
7c832835 | 2912 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
2913 | c->vaddr = remap_pci_mem(c->paddr, 200); |
2914 | ||
2915 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
2916 | * We poll for up to 120 secs, once per 100ms. */ | |
7c832835 | 2917 | for (i = 0; i < 1200; i++) { |
1da177e4 LT |
2918 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
2919 | if (scratchpad == CCISS_FIRMWARE_READY) | |
2920 | break; | |
2921 | set_current_state(TASK_INTERRUPTIBLE); | |
7c832835 | 2922 | schedule_timeout(HZ / 10); /* wait 100ms */ |
1da177e4 LT |
2923 | } |
2924 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
2925 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
c33ac89b | 2926 | err = -ENODEV; |
4e570309 | 2927 | goto err_out_free_res; |
1da177e4 LT |
2928 | } |
2929 | ||
2930 | /* get the address index number */ | |
2931 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
2932 | cfg_base_addr &= (__u32) 0x0000ffff; | |
2933 | #ifdef CCISS_DEBUG | |
2934 | printk("cfg base address = %x\n", cfg_base_addr); | |
7c832835 BH |
2935 | #endif /* CCISS_DEBUG */ |
2936 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); | |
1da177e4 LT |
2937 | #ifdef CCISS_DEBUG |
2938 | printk("cfg base address index = %x\n", cfg_base_addr_index); | |
7c832835 | 2939 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
2940 | if (cfg_base_addr_index == -1) { |
2941 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
c33ac89b | 2942 | err = -ENODEV; |
4e570309 | 2943 | goto err_out_free_res; |
1da177e4 LT |
2944 | } |
2945 | ||
2946 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
2947 | #ifdef CCISS_DEBUG | |
2948 | printk("cfg offset = %x\n", cfg_offset); | |
7c832835 BH |
2949 | #endif /* CCISS_DEBUG */ |
2950 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
2951 | cfg_base_addr_index) + | |
2952 | cfg_offset, sizeof(CfgTable_struct)); | |
1da177e4 LT |
2953 | c->board_id = board_id; |
2954 | ||
2955 | #ifdef CCISS_DEBUG | |
945f390f | 2956 | print_cfg_table(c->cfgtable); |
7c832835 | 2957 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2958 | |
7c832835 | 2959 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
1da177e4 LT |
2960 | if (board_id == products[i].board_id) { |
2961 | c->product_name = products[i].product_name; | |
2962 | c->access = *(products[i].access); | |
f880632f | 2963 | c->nr_cmds = products[i].nr_cmds; |
1da177e4 LT |
2964 | break; |
2965 | } | |
2966 | } | |
7c832835 BH |
2967 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
2968 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
2969 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
2970 | (readb(&c->cfgtable->Signature[3]) != 'S')) { | |
1da177e4 | 2971 | printk("Does not appear to be a valid CISS config table\n"); |
c33ac89b | 2972 | err = -ENODEV; |
4e570309 | 2973 | goto err_out_free_res; |
1da177e4 | 2974 | } |
4ff9a9a4 MM |
2975 | /* We didn't find the controller in our list. We know the |
2976 | * signature is valid. If it's an HP device let's try to | |
2977 | * bind to the device and fire it up. Otherwise we bail. | |
2978 | */ | |
2979 | if (i == ARRAY_SIZE(products)) { | |
2980 | if (subsystem_vendor_id == PCI_VENDOR_ID_HP) { | |
2981 | c->product_name = products[i-1].product_name; | |
2982 | c->access = *(products[i-1].access); | |
f880632f | 2983 | c->nr_cmds = products[i-1].nr_cmds; |
4ff9a9a4 MM |
2984 | printk(KERN_WARNING "cciss: This is an unknown " |
2985 | "Smart Array controller.\n" | |
2986 | "cciss: Please update to the latest driver " | |
2987 | "available from www.hp.com.\n"); | |
2988 | } else { | |
2989 | printk(KERN_WARNING "cciss: Sorry, I don't know how" | |
2990 | " to access the Smart Array controller %08lx\n" | |
2991 | , (unsigned long)board_id); | |
2992 | err = -ENODEV; | |
2993 | goto err_out_free_res; | |
2994 | } | |
2995 | } | |
1da177e4 | 2996 | #ifdef CONFIG_X86 |
7c832835 BH |
2997 | { |
2998 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
2999 | __u32 prefetch; | |
3000 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
3001 | prefetch |= 0x100; | |
3002 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
3003 | } | |
1da177e4 LT |
3004 | #endif |
3005 | ||
3006 | #ifdef CCISS_DEBUG | |
3007 | printk("Trying to put board into Simple mode\n"); | |
7c832835 | 3008 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3009 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
7c832835 BH |
3010 | /* Update the field, and then ring the doorbell */ |
3011 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); | |
3012 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); | |
1da177e4 LT |
3013 | |
3014 | /* under certain very rare conditions, this can take awhile. | |
3015 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3016 | * as we enter this code.) */ | |
7c832835 | 3017 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
1da177e4 LT |
3018 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
3019 | break; | |
3020 | /* delay and try again */ | |
3021 | set_current_state(TASK_INTERRUPTIBLE); | |
3022 | schedule_timeout(10); | |
7c832835 | 3023 | } |
1da177e4 LT |
3024 | |
3025 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3026 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
3027 | readl(c->vaddr + SA5_DOORBELL)); | |
3028 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3029 | #ifdef CCISS_DEBUG |
7c832835 BH |
3030 | print_cfg_table(c->cfgtable); |
3031 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3032 | |
7c832835 | 3033 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
1da177e4 | 3034 | printk(KERN_WARNING "cciss: unable to get board into" |
7c832835 | 3035 | " simple mode\n"); |
c33ac89b | 3036 | err = -ENODEV; |
4e570309 | 3037 | goto err_out_free_res; |
1da177e4 LT |
3038 | } |
3039 | return 0; | |
3040 | ||
7c832835 | 3041 | err_out_free_res: |
4e570309 BH |
3042 | pci_release_regions(pdev); |
3043 | ||
7c832835 | 3044 | err_out_disable_pdev: |
c33ac89b BH |
3045 | pci_disable_device(pdev); |
3046 | return err; | |
1da177e4 LT |
3047 | } |
3048 | ||
7c832835 BH |
3049 | /* |
3050 | * Gets information about the local volumes attached to the controller. | |
3051 | */ | |
1da177e4 LT |
3052 | static void cciss_getgeometry(int cntl_num) |
3053 | { | |
3054 | ReportLunData_struct *ld_buff; | |
1da177e4 LT |
3055 | InquiryData_struct *inq_buff; |
3056 | int return_code; | |
3057 | int i; | |
3058 | int listlength = 0; | |
3059 | __u32 lunid = 0; | |
3060 | int block_size; | |
00988a35 | 3061 | sector_t total_size; |
1da177e4 | 3062 | |
06ff37ff | 3063 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
7c832835 BH |
3064 | if (ld_buff == NULL) { |
3065 | printk(KERN_ERR "cciss: out of memory\n"); | |
3066 | return; | |
3067 | } | |
7c832835 BH |
3068 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
3069 | if (inq_buff == NULL) { | |
3070 | printk(KERN_ERR "cciss: out of memory\n"); | |
1da177e4 | 3071 | kfree(ld_buff); |
7c832835 BH |
3072 | return; |
3073 | } | |
3074 | /* Get the firmware version */ | |
3075 | return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff, | |
3076 | sizeof(InquiryData_struct), 0, 0, 0, NULL, | |
3077 | TYPE_CMD); | |
3078 | if (return_code == IO_OK) { | |
1da177e4 LT |
3079 | hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32]; |
3080 | hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33]; | |
3081 | hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34]; | |
3082 | hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35]; | |
7c832835 BH |
3083 | } else { /* send command failed */ |
3084 | ||
1da177e4 | 3085 | printk(KERN_WARNING "cciss: unable to determine firmware" |
7c832835 | 3086 | " version of controller\n"); |
1da177e4 | 3087 | } |
7c832835 BH |
3088 | /* Get the number of logical volumes */ |
3089 | return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff, | |
3090 | sizeof(ReportLunData_struct), 0, 0, 0, NULL, | |
3091 | TYPE_CMD); | |
1da177e4 | 3092 | |
7c832835 | 3093 | if (return_code == IO_OK) { |
1da177e4 LT |
3094 | #ifdef CCISS_DEBUG |
3095 | printk("LUN Data\n--------------------------\n"); | |
7c832835 BH |
3096 | #endif /* CCISS_DEBUG */ |
3097 | ||
3098 | listlength |= | |
3099 | (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24; | |
3100 | listlength |= | |
3101 | (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16; | |
3102 | listlength |= | |
3103 | (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8; | |
1da177e4 | 3104 | listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]); |
7c832835 BH |
3105 | } else { /* reading number of logical volumes failed */ |
3106 | ||
1da177e4 | 3107 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 3108 | " command failed\n"); |
1da177e4 LT |
3109 | listlength = 0; |
3110 | } | |
7c832835 BH |
3111 | hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry |
3112 | if (hba[cntl_num]->num_luns > CISS_MAX_LUN) { | |
3113 | printk(KERN_ERR | |
3114 | "ciss: only %d number of logical volumes supported\n", | |
3115 | CISS_MAX_LUN); | |
1da177e4 LT |
3116 | hba[cntl_num]->num_luns = CISS_MAX_LUN; |
3117 | } | |
3118 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3119 | printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", |
3120 | ld_buff->LUNListLength[0], ld_buff->LUNListLength[1], | |
3121 | ld_buff->LUNListLength[2], ld_buff->LUNListLength[3], | |
3122 | hba[cntl_num]->num_luns); | |
3123 | #endif /* CCISS_DEBUG */ | |
3124 | ||
3125 | hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns - 1; | |
7c832835 BH |
3126 | for (i = 0; i < CISS_MAX_LUN; i++) { |
3127 | if (i < hba[cntl_num]->num_luns) { | |
3128 | lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) | |
3129 | << 24; | |
3130 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) | |
3131 | << 16; | |
3132 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) | |
3133 | << 8; | |
3134 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
3135 | ||
3136 | hba[cntl_num]->drv[i].LunID = lunid; | |
1da177e4 LT |
3137 | |
3138 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3139 | printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i, |
3140 | ld_buff->LUN[i][0], ld_buff->LUN[i][1], | |
3141 | ld_buff->LUN[i][2], ld_buff->LUN[i][3], | |
3142 | hba[cntl_num]->drv[i].LunID); | |
3143 | #endif /* CCISS_DEBUG */ | |
00988a35 MMOD |
3144 | |
3145 | /* testing to see if 16-byte CDBs are already being used */ | |
3146 | if(hba[cntl_num]->cciss_read == CCISS_READ_16) { | |
3147 | cciss_read_capacity_16(cntl_num, i, 0, | |
7c832835 | 3148 | &total_size, &block_size); |
00988a35 MMOD |
3149 | goto geo_inq; |
3150 | } | |
3151 | cciss_read_capacity(cntl_num, i, 0, &total_size, &block_size); | |
3152 | ||
3153 | /* total_size = last LBA + 1 */ | |
3154 | if(total_size == (__u32) 0) { | |
3155 | cciss_read_capacity_16(cntl_num, i, 0, | |
3156 | &total_size, &block_size); | |
3157 | hba[cntl_num]->cciss_read = CCISS_READ_16; | |
3158 | hba[cntl_num]->cciss_write = CCISS_WRITE_16; | |
3159 | } else { | |
3160 | hba[cntl_num]->cciss_read = CCISS_READ_10; | |
3161 | hba[cntl_num]->cciss_write = CCISS_WRITE_10; | |
3162 | } | |
3163 | geo_inq: | |
ddd47442 | 3164 | cciss_geometry_inquiry(cntl_num, i, 0, total_size, |
7c832835 BH |
3165 | block_size, inq_buff, |
3166 | &hba[cntl_num]->drv[i]); | |
ddd47442 MM |
3167 | } else { |
3168 | /* initialize raid_level to indicate a free space */ | |
3169 | hba[cntl_num]->drv[i].raid_level = -1; | |
3170 | } | |
1da177e4 LT |
3171 | } |
3172 | kfree(ld_buff); | |
1da177e4 | 3173 | kfree(inq_buff); |
7c832835 | 3174 | } |
1da177e4 LT |
3175 | |
3176 | /* Function to find the first free pointer into our hba[] array */ | |
3177 | /* Returns -1 if no free entries are left. */ | |
3178 | static int alloc_cciss_hba(void) | |
3179 | { | |
3180 | struct gendisk *disk[NWD]; | |
3181 | int i, n; | |
3182 | for (n = 0; n < NWD; n++) { | |
3183 | disk[n] = alloc_disk(1 << NWD_SHIFT); | |
3184 | if (!disk[n]) | |
3185 | goto out; | |
3186 | } | |
3187 | ||
7c832835 | 3188 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
3189 | if (!hba[i]) { |
3190 | ctlr_info_t *p; | |
06ff37ff | 3191 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
3192 | if (!p) |
3193 | goto Enomem; | |
1da177e4 LT |
3194 | for (n = 0; n < NWD; n++) |
3195 | p->gendisk[n] = disk[n]; | |
3196 | hba[i] = p; | |
3197 | return i; | |
3198 | } | |
3199 | } | |
3200 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 3201 | " of %d controllers.\n", MAX_CTLR); |
1da177e4 | 3202 | goto out; |
7c832835 | 3203 | Enomem: |
1da177e4 | 3204 | printk(KERN_ERR "cciss: out of memory.\n"); |
7c832835 | 3205 | out: |
1da177e4 LT |
3206 | while (n--) |
3207 | put_disk(disk[n]); | |
3208 | return -1; | |
3209 | } | |
3210 | ||
3211 | static void free_hba(int i) | |
3212 | { | |
3213 | ctlr_info_t *p = hba[i]; | |
3214 | int n; | |
3215 | ||
3216 | hba[i] = NULL; | |
3217 | for (n = 0; n < NWD; n++) | |
3218 | put_disk(p->gendisk[n]); | |
3219 | kfree(p); | |
3220 | } | |
3221 | ||
3222 | /* | |
3223 | * This is it. Find all the controllers and register them. I really hate | |
3224 | * stealing all these major device numbers. | |
3225 | * returns the number of block devices registered. | |
3226 | */ | |
3227 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 3228 | const struct pci_device_id *ent) |
1da177e4 LT |
3229 | { |
3230 | request_queue_t *q; | |
3231 | int i; | |
3232 | int j; | |
3233 | int rc; | |
40aabb58 | 3234 | int dac; |
1da177e4 | 3235 | |
1da177e4 | 3236 | i = alloc_cciss_hba(); |
7c832835 | 3237 | if (i < 0) |
e2019b58 | 3238 | return -1; |
1f8ef380 MM |
3239 | |
3240 | hba[i]->busy_initializing = 1; | |
3241 | ||
1da177e4 LT |
3242 | if (cciss_pci_init(hba[i], pdev) != 0) |
3243 | goto clean1; | |
3244 | ||
3245 | sprintf(hba[i]->devname, "cciss%d", i); | |
3246 | hba[i]->ctlr = i; | |
3247 | hba[i]->pdev = pdev; | |
3248 | ||
3249 | /* configure PCI DMA stuff */ | |
eb0df996 | 3250 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) |
40aabb58 | 3251 | dac = 1; |
eb0df996 | 3252 | else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) |
40aabb58 | 3253 | dac = 0; |
1da177e4 | 3254 | else { |
40aabb58 | 3255 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
3256 | goto clean1; |
3257 | } | |
3258 | ||
3259 | /* | |
3260 | * register with the major number, or get a dynamic major number | |
3261 | * by passing 0 as argument. This is done for greater than | |
3262 | * 8 controller support. | |
3263 | */ | |
3264 | if (i < MAX_CTLR_ORIG) | |
564de74a | 3265 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 3266 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3267 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 3268 | printk(KERN_ERR |
7c832835 BH |
3269 | "cciss: Unable to get major number %d for %s " |
3270 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 3271 | goto clean1; |
7c832835 | 3272 | } else { |
1da177e4 LT |
3273 | if (i >= MAX_CTLR_ORIG) |
3274 | hba[i]->major = rc; | |
3275 | } | |
3276 | ||
3277 | /* make sure the board interrupts are off */ | |
3278 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
7c832835 | 3279 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
69ab3912 | 3280 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
1da177e4 | 3281 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
7c832835 | 3282 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
1da177e4 LT |
3283 | goto clean2; |
3284 | } | |
40aabb58 BH |
3285 | |
3286 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 BH |
3287 | hba[i]->devname, pdev->device, pci_name(pdev), |
3288 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); | |
3289 | ||
3290 | hba[i]->cmd_pool_bits = | |
f880632f | 3291 | kmalloc(((hba[i]->nr_cmds + BITS_PER_LONG - |
7c832835 BH |
3292 | 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL); |
3293 | hba[i]->cmd_pool = (CommandList_struct *) | |
3294 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3295 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
3296 | &(hba[i]->cmd_pool_dhandle)); |
3297 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
3298 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3299 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
3300 | &(hba[i]->errinfo_pool_dhandle)); |
3301 | if ((hba[i]->cmd_pool_bits == NULL) | |
3302 | || (hba[i]->cmd_pool == NULL) | |
3303 | || (hba[i]->errinfo_pool == NULL)) { | |
3304 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
3305 | goto clean4; |
3306 | } | |
3da8b713 | 3307 | #ifdef CONFIG_CISS_SCSI_TAPE |
7c832835 BH |
3308 | hba[i]->scsi_rejects.complete = |
3309 | kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) * | |
f880632f | 3310 | (hba[i]->nr_cmds + 5), GFP_KERNEL); |
3da8b713 | 3311 | if (hba[i]->scsi_rejects.complete == NULL) { |
7c832835 | 3312 | printk(KERN_ERR "cciss: out of memory"); |
3da8b713 | 3313 | goto clean4; |
3314 | } | |
3315 | #endif | |
1da177e4 | 3316 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 3317 | |
7c832835 BH |
3318 | /* Initialize the pdev driver private data. |
3319 | have it point to hba[i]. */ | |
1da177e4 | 3320 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
3321 | /* command and error info recs zeroed out before |
3322 | they are used */ | |
3323 | memset(hba[i]->cmd_pool_bits, 0, | |
f880632f | 3324 | ((hba[i]->nr_cmds + BITS_PER_LONG - |
7c832835 | 3325 | 1) / BITS_PER_LONG) * sizeof(unsigned long)); |
1da177e4 | 3326 | |
7c832835 BH |
3327 | #ifdef CCISS_DEBUG |
3328 | printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n", i); | |
3329 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
3330 | |
3331 | cciss_getgeometry(i); | |
3332 | ||
3333 | cciss_scsi_setup(i); | |
3334 | ||
3335 | /* Turn the interrupts on so we can service requests */ | |
3336 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
3337 | ||
3338 | cciss_procinit(i); | |
d6dbf42e | 3339 | hba[i]->busy_initializing = 0; |
1da177e4 | 3340 | |
7c832835 | 3341 | for (j = 0; j < NWD; j++) { /* mfm */ |
ad2b9312 MM |
3342 | drive_info_struct *drv = &(hba[i]->drv[j]); |
3343 | struct gendisk *disk = hba[i]->gendisk[j]; | |
3344 | ||
3345 | q = blk_init_queue(do_cciss_request, &hba[i]->lock); | |
3346 | if (!q) { | |
3347 | printk(KERN_ERR | |
7c832835 BH |
3348 | "cciss: unable to allocate queue for disk %d\n", |
3349 | j); | |
ad2b9312 MM |
3350 | break; |
3351 | } | |
3352 | drv->queue = q; | |
3353 | ||
3354 | q->backing_dev_info.ra_pages = READ_AHEAD; | |
a9925a06 JA |
3355 | blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask); |
3356 | ||
3357 | /* This is a hardware imposed limit. */ | |
3358 | blk_queue_max_hw_segments(q, MAXSGENTRIES); | |
1da177e4 | 3359 | |
a9925a06 JA |
3360 | /* This is a limit in the driver and could be eliminated. */ |
3361 | blk_queue_max_phys_segments(q, MAXSGENTRIES); | |
1da177e4 | 3362 | |
a9925a06 | 3363 | blk_queue_max_sectors(q, 512); |
1da177e4 | 3364 | |
a9925a06 | 3365 | blk_queue_softirq_done(q, cciss_softirq_done); |
1da177e4 | 3366 | |
ad2b9312 | 3367 | q->queuedata = hba[i]; |
1da177e4 | 3368 | sprintf(disk->disk_name, "cciss/c%dd%d", i, j); |
1da177e4 LT |
3369 | disk->major = hba[i]->major; |
3370 | disk->first_minor = j << NWD_SHIFT; | |
3371 | disk->fops = &cciss_fops; | |
ad2b9312 | 3372 | disk->queue = q; |
1da177e4 | 3373 | disk->private_data = drv; |
27c0ff86 | 3374 | disk->driverfs_dev = &pdev->dev; |
1da177e4 LT |
3375 | /* we must register the controller even if no disks exist */ |
3376 | /* this is for the online array utilities */ | |
7c832835 | 3377 | if (!drv->heads && j) |
1da177e4 | 3378 | continue; |
ad2b9312 | 3379 | blk_queue_hardsect_size(q, drv->block_size); |
1da177e4 LT |
3380 | set_capacity(disk, drv->nr_blocks); |
3381 | add_disk(disk); | |
3382 | } | |
ad2b9312 | 3383 | |
e2019b58 | 3384 | return 1; |
1da177e4 | 3385 | |
7c832835 | 3386 | clean4: |
3da8b713 | 3387 | #ifdef CONFIG_CISS_SCSI_TAPE |
1acc0b0b | 3388 | kfree(hba[i]->scsi_rejects.complete); |
3da8b713 | 3389 | #endif |
6044ec88 | 3390 | kfree(hba[i]->cmd_pool_bits); |
7c832835 | 3391 | if (hba[i]->cmd_pool) |
1da177e4 | 3392 | pci_free_consistent(hba[i]->pdev, |
f880632f | 3393 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
3394 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
3395 | if (hba[i]->errinfo_pool) | |
1da177e4 | 3396 | pci_free_consistent(hba[i]->pdev, |
f880632f | 3397 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
3398 | hba[i]->errinfo_pool, |
3399 | hba[i]->errinfo_pool_dhandle); | |
fb86a35b | 3400 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
7c832835 | 3401 | clean2: |
1da177e4 | 3402 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3403 | clean1: |
1f8ef380 | 3404 | hba[i]->busy_initializing = 0; |
61808c2b | 3405 | free_hba(i); |
e2019b58 | 3406 | return -1; |
1da177e4 LT |
3407 | } |
3408 | ||
7c832835 | 3409 | static void __devexit cciss_remove_one(struct pci_dev *pdev) |
1da177e4 LT |
3410 | { |
3411 | ctlr_info_t *tmp_ptr; | |
3412 | int i, j; | |
3413 | char flush_buf[4]; | |
7c832835 | 3414 | int return_code; |
1da177e4 | 3415 | |
7c832835 BH |
3416 | if (pci_get_drvdata(pdev) == NULL) { |
3417 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
3418 | return; |
3419 | } | |
3420 | tmp_ptr = pci_get_drvdata(pdev); | |
3421 | i = tmp_ptr->ctlr; | |
7c832835 | 3422 | if (hba[i] == NULL) { |
1da177e4 | 3423 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 3424 | "already be removed \n"); |
1da177e4 LT |
3425 | return; |
3426 | } | |
3427 | /* Turn board interrupts off and send the flush cache command */ | |
3428 | /* sendcmd will turn off interrupt, and send the flush... | |
7c832835 | 3429 | * To write all data in the battery backed cache to disks */ |
1da177e4 LT |
3430 | memset(flush_buf, 0, 4); |
3431 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL, | |
7c832835 BH |
3432 | TYPE_CMD); |
3433 | if (return_code != IO_OK) { | |
3434 | printk(KERN_WARNING "Error Flushing cache on controller %d\n", | |
3435 | i); | |
1da177e4 | 3436 | } |
fb86a35b MM |
3437 | free_irq(hba[i]->intr[2], hba[i]); |
3438 | ||
3439 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3440 | if (hba[i]->msix_vector) |
3441 | pci_disable_msix(hba[i]->pdev); | |
3442 | else if (hba[i]->msi_vector) | |
3443 | pci_disable_msi(hba[i]->pdev); | |
3444 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 3445 | |
1da177e4 | 3446 | iounmap(hba[i]->vaddr); |
7c832835 | 3447 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
1da177e4 | 3448 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 BH |
3449 | remove_proc_entry(hba[i]->devname, proc_cciss); |
3450 | ||
1da177e4 LT |
3451 | /* remove it from the disk list */ |
3452 | for (j = 0; j < NWD; j++) { | |
3453 | struct gendisk *disk = hba[i]->gendisk[j]; | |
6f5a0f7c | 3454 | if (disk) { |
3455 | request_queue_t *q = disk->queue; | |
3456 | ||
7c832835 | 3457 | if (disk->flags & GENHD_FL_UP) |
6f5a0f7c | 3458 | del_gendisk(disk); |
3459 | if (q) | |
3460 | blk_cleanup_queue(q); | |
6a445d3b | 3461 | } |
1da177e4 LT |
3462 | } |
3463 | ||
f880632f | 3464 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
1da177e4 | 3465 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
f880632f | 3466 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 | 3467 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
1da177e4 | 3468 | kfree(hba[i]->cmd_pool_bits); |
3da8b713 | 3469 | #ifdef CONFIG_CISS_SCSI_TAPE |
3470 | kfree(hba[i]->scsi_rejects.complete); | |
3471 | #endif | |
7c832835 | 3472 | pci_release_regions(pdev); |
4e570309 BH |
3473 | pci_disable_device(pdev); |
3474 | pci_set_drvdata(pdev, NULL); | |
1da177e4 | 3475 | free_hba(i); |
7c832835 | 3476 | } |
1da177e4 LT |
3477 | |
3478 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
3479 | .name = "cciss", |
3480 | .probe = cciss_init_one, | |
3481 | .remove = __devexit_p(cciss_remove_one), | |
3482 | .id_table = cciss_pci_device_id, /* id_table */ | |
1da177e4 LT |
3483 | }; |
3484 | ||
3485 | /* | |
3486 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 3487 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
3488 | */ |
3489 | static int __init cciss_init(void) | |
3490 | { | |
3491 | printk(KERN_INFO DRIVER_NAME "\n"); | |
3492 | ||
3493 | /* Register for our PCI devices */ | |
9bfab8ce | 3494 | return pci_register_driver(&cciss_pci_driver); |
1da177e4 LT |
3495 | } |
3496 | ||
3497 | static void __exit cciss_cleanup(void) | |
3498 | { | |
3499 | int i; | |
3500 | ||
3501 | pci_unregister_driver(&cciss_pci_driver); | |
3502 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
3503 | for (i = 0; i < MAX_CTLR; i++) { |
3504 | if (hba[i] != NULL) { | |
1da177e4 | 3505 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 3506 | " controller %d\n", i); |
1da177e4 LT |
3507 | cciss_remove_one(hba[i]->pdev); |
3508 | } | |
3509 | } | |
3510 | remove_proc_entry("cciss", proc_root_driver); | |
3511 | } | |
3512 | ||
33079b21 MM |
3513 | static void fail_all_cmds(unsigned long ctlr) |
3514 | { | |
3515 | /* If we get here, the board is apparently dead. */ | |
3516 | ctlr_info_t *h = hba[ctlr]; | |
3517 | CommandList_struct *c; | |
3518 | unsigned long flags; | |
3519 | ||
3520 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); | |
7c832835 | 3521 | h->alive = 0; /* the controller apparently died... */ |
33079b21 MM |
3522 | |
3523 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
3524 | ||
7c832835 | 3525 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
33079b21 MM |
3526 | |
3527 | /* move everything off the request queue onto the completed queue */ | |
7c832835 | 3528 | while ((c = h->reqQ) != NULL) { |
33079b21 MM |
3529 | removeQ(&(h->reqQ), c); |
3530 | h->Qdepth--; | |
7c832835 | 3531 | addQ(&(h->cmpQ), c); |
33079b21 MM |
3532 | } |
3533 | ||
3534 | /* Now, fail everything on the completed queue with a HW error */ | |
7c832835 | 3535 | while ((c = h->cmpQ) != NULL) { |
33079b21 MM |
3536 | removeQ(&h->cmpQ, c); |
3537 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
3538 | if (c->cmd_type == CMD_RWREQ) { | |
3539 | complete_command(h, c, 0); | |
3540 | } else if (c->cmd_type == CMD_IOCTL_PEND) | |
3541 | complete(c->waiting); | |
3542 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
3543 | else if (c->cmd_type == CMD_SCSI) |
3544 | complete_scsi_command(c, 0, 0); | |
33079b21 MM |
3545 | #endif |
3546 | } | |
3547 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
3548 | return; | |
3549 | } | |
3550 | ||
1da177e4 LT |
3551 | module_init(cciss_init); |
3552 | module_exit(cciss_cleanup); |