]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Disk Array driver for HP SA 5xxx and 6xxx Controllers | |
fb86a35b | 3 | * Copyright 2000, 2006 Hewlett-Packard Development Company, L.P. |
1da177e4 LT |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
13 | * NON INFRINGEMENT. See the GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | * | |
19 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com | |
20 | * | |
21 | */ | |
22 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/types.h> | |
26 | #include <linux/pci.h> | |
27 | #include <linux/kernel.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/major.h> | |
31 | #include <linux/fs.h> | |
32 | #include <linux/bio.h> | |
33 | #include <linux/blkpg.h> | |
34 | #include <linux/timer.h> | |
35 | #include <linux/proc_fs.h> | |
7c832835 | 36 | #include <linux/init.h> |
1da177e4 LT |
37 | #include <linux/hdreg.h> |
38 | #include <linux/spinlock.h> | |
39 | #include <linux/compat.h> | |
2056a782 | 40 | #include <linux/blktrace_api.h> |
1da177e4 LT |
41 | #include <asm/uaccess.h> |
42 | #include <asm/io.h> | |
43 | ||
eb0df996 | 44 | #include <linux/dma-mapping.h> |
1da177e4 LT |
45 | #include <linux/blkdev.h> |
46 | #include <linux/genhd.h> | |
47 | #include <linux/completion.h> | |
d5d3b736 | 48 | #include <scsi/scsi.h> |
03bbfee5 MMOD |
49 | #include <scsi/sg.h> |
50 | #include <scsi/scsi_ioctl.h> | |
51 | #include <linux/cdrom.h> | |
1da177e4 LT |
52 | |
53 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) | |
9d827c9e MM |
54 | #define DRIVER_NAME "HP CISS Driver (v 3.6.14)" |
55 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3,6,14) | |
1da177e4 LT |
56 | |
57 | /* Embedded module documentation macros - see modules.h */ | |
58 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
9d827c9e | 59 | MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 3.6.14"); |
1da177e4 | 60 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
1883c5ab | 61 | " SA6i P600 P800 P400 P400i E200 E200i E500"); |
9d827c9e | 62 | MODULE_VERSION("3.6.14"); |
1da177e4 LT |
63 | MODULE_LICENSE("GPL"); |
64 | ||
65 | #include "cciss_cmd.h" | |
66 | #include "cciss.h" | |
67 | #include <linux/cciss_ioctl.h> | |
68 | ||
69 | /* define the PCI info for the cards we can control */ | |
70 | static const struct pci_device_id cciss_pci_device_id[] = { | |
f82ccdb9 BH |
71 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
72 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, | |
73 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, | |
74 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, | |
75 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, | |
76 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, | |
77 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, | |
78 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, | |
79 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, | |
80 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, | |
81 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, | |
82 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, | |
83 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, | |
84 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, | |
85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, | |
86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, | |
87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, | |
88 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, | |
de923916 | 89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, |
9cff3b38 | 90 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
4ff9a9a4 MM |
91 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
92 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, | |
1da177e4 LT |
93 | {0,} |
94 | }; | |
7c832835 | 95 | |
1da177e4 LT |
96 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
97 | ||
1da177e4 LT |
98 | /* board_id = Subsystem Device ID & Vendor ID |
99 | * product = Marketing Name for the board | |
7c832835 | 100 | * access = Address of the struct of function pointers |
f880632f | 101 | * nr_cmds = Number of commands supported by controller |
1da177e4 LT |
102 | */ |
103 | static struct board_type products[] = { | |
f880632f MM |
104 | {0x40700E11, "Smart Array 5300", &SA5_access, 512}, |
105 | {0x40800E11, "Smart Array 5i", &SA5B_access, 512}, | |
106 | {0x40820E11, "Smart Array 532", &SA5B_access, 512}, | |
107 | {0x40830E11, "Smart Array 5312", &SA5B_access, 512}, | |
108 | {0x409A0E11, "Smart Array 641", &SA5_access, 512}, | |
109 | {0x409B0E11, "Smart Array 642", &SA5_access, 512}, | |
110 | {0x409C0E11, "Smart Array 6400", &SA5_access, 512}, | |
111 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access, 512}, | |
112 | {0x40910E11, "Smart Array 6i", &SA5_access, 512}, | |
113 | {0x3225103C, "Smart Array P600", &SA5_access, 512}, | |
114 | {0x3223103C, "Smart Array P800", &SA5_access, 512}, | |
115 | {0x3234103C, "Smart Array P400", &SA5_access, 512}, | |
116 | {0x3235103C, "Smart Array P400i", &SA5_access, 512}, | |
117 | {0x3211103C, "Smart Array E200i", &SA5_access, 120}, | |
118 | {0x3212103C, "Smart Array E200", &SA5_access, 120}, | |
119 | {0x3213103C, "Smart Array E200i", &SA5_access, 120}, | |
120 | {0x3214103C, "Smart Array E200i", &SA5_access, 120}, | |
121 | {0x3215103C, "Smart Array E200i", &SA5_access, 120}, | |
de923916 | 122 | {0x3237103C, "Smart Array E500", &SA5_access, 512}, |
9cff3b38 | 123 | {0x323D103C, "Smart Array P700m", &SA5_access, 512}, |
f880632f | 124 | {0xFFFF103C, "Unknown Smart Array", &SA5_access, 120}, |
1da177e4 LT |
125 | }; |
126 | ||
d14c4ab5 | 127 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
7c832835 | 128 | #define MAX_CONFIG_WAIT 30000 |
1da177e4 LT |
129 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
130 | ||
131 | /*define how many times we will try a command because of bus resets */ | |
132 | #define MAX_CMD_RETRIES 3 | |
133 | ||
134 | #define READ_AHEAD 1024 | |
1da177e4 LT |
135 | #define MAX_CTLR 32 |
136 | ||
137 | /* Originally cciss driver only supports 8 major numbers */ | |
138 | #define MAX_CTLR_ORIG 8 | |
139 | ||
1da177e4 LT |
140 | static ctlr_info_t *hba[MAX_CTLR]; |
141 | ||
165125e1 | 142 | static void do_cciss_request(struct request_queue *q); |
7d12e780 | 143 | static irqreturn_t do_cciss_intr(int irq, void *dev_id); |
1da177e4 LT |
144 | static int cciss_open(struct inode *inode, struct file *filep); |
145 | static int cciss_release(struct inode *inode, struct file *filep); | |
7c832835 BH |
146 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
147 | unsigned int cmd, unsigned long arg); | |
a885c8c4 | 148 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 | 149 | |
1da177e4 | 150 | static int cciss_revalidate(struct gendisk *disk); |
ddd47442 | 151 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk); |
7c832835 BH |
152 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, |
153 | int clear_all); | |
1da177e4 | 154 | |
00988a35 MMOD |
155 | static void cciss_read_capacity(int ctlr, int logvol, int withirq, |
156 | sector_t *total_size, unsigned int *block_size); | |
157 | static void cciss_read_capacity_16(int ctlr, int logvol, int withirq, | |
158 | sector_t *total_size, unsigned int *block_size); | |
159 | static void cciss_geometry_inquiry(int ctlr, int logvol, | |
160 | int withirq, sector_t total_size, | |
161 | unsigned int block_size, InquiryData_struct *inq_buff, | |
7c832835 | 162 | drive_info_struct *drv); |
1da177e4 | 163 | static void cciss_getgeometry(int cntl_num); |
7c832835 BH |
164 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
165 | __u32); | |
166 | static void start_io(ctlr_info_t *h); | |
167 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, | |
168 | unsigned int use_unit_num, unsigned int log_unit, | |
169 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); | |
170 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, | |
171 | unsigned int use_unit_num, unsigned int log_unit, | |
172 | __u8 page_code, int cmd_type); | |
1da177e4 | 173 | |
33079b21 MM |
174 | static void fail_all_cmds(unsigned long ctlr); |
175 | ||
1da177e4 | 176 | #ifdef CONFIG_PROC_FS |
7c832835 BH |
177 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
178 | int length, int *eof, void *data); | |
1da177e4 LT |
179 | static void cciss_procinit(int i); |
180 | #else | |
7c832835 BH |
181 | static void cciss_procinit(int i) |
182 | { | |
183 | } | |
184 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
185 | |
186 | #ifdef CONFIG_COMPAT | |
187 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg); | |
188 | #endif | |
189 | ||
7c832835 BH |
190 | static struct block_device_operations cciss_fops = { |
191 | .owner = THIS_MODULE, | |
192 | .open = cciss_open, | |
193 | .release = cciss_release, | |
194 | .ioctl = cciss_ioctl, | |
195 | .getgeo = cciss_getgeo, | |
1da177e4 | 196 | #ifdef CONFIG_COMPAT |
7c832835 | 197 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 198 | #endif |
7c832835 | 199 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
200 | }; |
201 | ||
202 | /* | |
203 | * Enqueuing and dequeuing functions for cmdlists. | |
204 | */ | |
205 | static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c) | |
206 | { | |
7c832835 BH |
207 | if (*Qptr == NULL) { |
208 | *Qptr = c; | |
209 | c->next = c->prev = c; | |
210 | } else { | |
211 | c->prev = (*Qptr)->prev; | |
212 | c->next = (*Qptr); | |
213 | (*Qptr)->prev->next = c; | |
214 | (*Qptr)->prev = c; | |
215 | } | |
1da177e4 LT |
216 | } |
217 | ||
7c832835 BH |
218 | static inline CommandList_struct *removeQ(CommandList_struct **Qptr, |
219 | CommandList_struct *c) | |
1da177e4 | 220 | { |
7c832835 BH |
221 | if (c && c->next != c) { |
222 | if (*Qptr == c) | |
223 | *Qptr = c->next; | |
224 | c->prev->next = c->next; | |
225 | c->next->prev = c->prev; | |
226 | } else { | |
227 | *Qptr = NULL; | |
228 | } | |
229 | return c; | |
1da177e4 LT |
230 | } |
231 | ||
232 | #include "cciss_scsi.c" /* For SCSI tape support */ | |
233 | ||
0f5486ec RD |
234 | #define RAID_UNKNOWN 6 |
235 | ||
1da177e4 LT |
236 | #ifdef CONFIG_PROC_FS |
237 | ||
238 | /* | |
239 | * Report information about this controller. | |
240 | */ | |
241 | #define ENG_GIG 1000000000 | |
242 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
7c832835 BH |
243 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
244 | "UNKNOWN" | |
245 | }; | |
1da177e4 LT |
246 | |
247 | static struct proc_dir_entry *proc_cciss; | |
248 | ||
7c832835 BH |
249 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
250 | int length, int *eof, void *data) | |
1da177e4 | 251 | { |
7c832835 BH |
252 | off_t pos = 0; |
253 | off_t len = 0; | |
254 | int size, i, ctlr; | |
255 | ctlr_info_t *h = (ctlr_info_t *) data; | |
256 | drive_info_struct *drv; | |
1da177e4 | 257 | unsigned long flags; |
7c832835 | 258 | sector_t vol_sz, vol_sz_frac; |
1da177e4 | 259 | |
7c832835 | 260 | ctlr = h->ctlr; |
1da177e4 LT |
261 | |
262 | /* prevent displaying bogus info during configuration | |
263 | * or deconfiguration of a logical volume | |
264 | */ | |
265 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
266 | if (h->busy_configuring) { | |
267 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 268 | return -EBUSY; |
1da177e4 LT |
269 | } |
270 | h->busy_configuring = 1; | |
271 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
272 | ||
7c832835 BH |
273 | size = sprintf(buffer, "%s: HP %s Controller\n" |
274 | "Board ID: 0x%08lx\n" | |
275 | "Firmware Version: %c%c%c%c\n" | |
276 | "IRQ: %d\n" | |
277 | "Logical drives: %d\n" | |
92c4231a | 278 | "Max sectors: %d\n" |
7c832835 BH |
279 | "Current Q depth: %d\n" |
280 | "Current # commands on controller: %d\n" | |
281 | "Max Q depth since init: %d\n" | |
282 | "Max # commands on controller since init: %d\n" | |
283 | "Max SG entries since init: %d\n\n", | |
284 | h->devname, | |
285 | h->product_name, | |
286 | (unsigned long)h->board_id, | |
287 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
288 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], | |
92c4231a MM |
289 | h->num_luns, |
290 | h->cciss_max_sectors, | |
291 | h->Qdepth, h->commands_outstanding, | |
7c832835 BH |
292 | h->maxQsinceinit, h->max_outstanding, h->maxSG); |
293 | ||
294 | pos += size; | |
295 | len += size; | |
1da177e4 | 296 | cciss_proc_tape_report(ctlr, buffer, &pos, &len); |
7c832835 | 297 | for (i = 0; i <= h->highest_lun; i++) { |
1da177e4 | 298 | |
7c832835 | 299 | drv = &h->drv[i]; |
ddd47442 | 300 | if (drv->heads == 0) |
1da177e4 LT |
301 | continue; |
302 | ||
303 | vol_sz = drv->nr_blocks; | |
304 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
305 | vol_sz_frac *= 100; | |
306 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
307 | ||
308 | if (drv->raid_level > 5) | |
309 | drv->raid_level = RAID_UNKNOWN; | |
7c832835 BH |
310 | size = sprintf(buffer + len, "cciss/c%dd%d:" |
311 | "\t%4u.%02uGB\tRAID %s\n", | |
312 | ctlr, i, (int)vol_sz, (int)vol_sz_frac, | |
313 | raid_label[drv->raid_level]); | |
314 | pos += size; | |
315 | len += size; | |
316 | } | |
317 | ||
318 | *eof = 1; | |
319 | *start = buffer + offset; | |
320 | len -= offset; | |
321 | if (len > length) | |
322 | len = length; | |
1da177e4 | 323 | h->busy_configuring = 0; |
7c832835 | 324 | return len; |
1da177e4 LT |
325 | } |
326 | ||
7c832835 BH |
327 | static int |
328 | cciss_proc_write(struct file *file, const char __user *buffer, | |
329 | unsigned long count, void *data) | |
1da177e4 LT |
330 | { |
331 | unsigned char cmd[80]; | |
332 | int len; | |
333 | #ifdef CONFIG_CISS_SCSI_TAPE | |
334 | ctlr_info_t *h = (ctlr_info_t *) data; | |
335 | int rc; | |
336 | #endif | |
337 | ||
7c832835 BH |
338 | if (count > sizeof(cmd) - 1) |
339 | return -EINVAL; | |
340 | if (copy_from_user(cmd, buffer, count)) | |
341 | return -EFAULT; | |
1da177e4 LT |
342 | cmd[count] = '\0'; |
343 | len = strlen(cmd); // above 3 lines ensure safety | |
7c832835 | 344 | if (len && cmd[len - 1] == '\n') |
1da177e4 LT |
345 | cmd[--len] = '\0'; |
346 | # ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
347 | if (strcmp("engage scsi", cmd) == 0) { |
348 | rc = cciss_engage_scsi(h->ctlr); | |
349 | if (rc != 0) | |
350 | return -rc; | |
351 | return count; | |
352 | } | |
353 | /* might be nice to have "disengage" too, but it's not | |
354 | safely possible. (only 1 module use count, lock issues.) */ | |
1da177e4 LT |
355 | # endif |
356 | return -EINVAL; | |
357 | } | |
358 | ||
359 | /* | |
360 | * Get us a file in /proc/cciss that says something about each controller. | |
361 | * Create /proc/cciss if it doesn't exist yet. | |
362 | */ | |
363 | static void __devinit cciss_procinit(int i) | |
364 | { | |
365 | struct proc_dir_entry *pde; | |
366 | ||
7c832835 BH |
367 | if (proc_cciss == NULL) { |
368 | proc_cciss = proc_mkdir("cciss", proc_root_driver); | |
369 | if (!proc_cciss) | |
1da177e4 | 370 | return; |
7c832835 | 371 | } |
1da177e4 | 372 | |
7c832835 BH |
373 | pde = create_proc_read_entry(hba[i]->devname, |
374 | S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH, | |
375 | proc_cciss, cciss_proc_get_info, hba[i]); | |
1da177e4 LT |
376 | pde->write_proc = cciss_proc_write; |
377 | } | |
7c832835 | 378 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 379 | |
7c832835 BH |
380 | /* |
381 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 382 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
383 | * which ones are free or in use. For operations that can wait for kmalloc |
384 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
385 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
386 | */ | |
387 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
388 | { |
389 | CommandList_struct *c; | |
7c832835 | 390 | int i; |
1da177e4 LT |
391 | u64bit temp64; |
392 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
393 | ||
7c832835 BH |
394 | if (!get_from_pool) { |
395 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
396 | sizeof(CommandList_struct), &cmd_dma_handle); | |
397 | if (c == NULL) | |
398 | return NULL; | |
1da177e4 LT |
399 | memset(c, 0, sizeof(CommandList_struct)); |
400 | ||
33079b21 MM |
401 | c->cmdindex = -1; |
402 | ||
7c832835 BH |
403 | c->err_info = (ErrorInfo_struct *) |
404 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
405 | &err_dma_handle); | |
406 | ||
407 | if (c->err_info == NULL) { | |
408 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
409 | sizeof(CommandList_struct), c, cmd_dma_handle); |
410 | return NULL; | |
411 | } | |
412 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
413 | } else { /* get it out of the controllers pool */ |
414 | ||
415 | do { | |
f880632f MM |
416 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
417 | if (i == h->nr_cmds) | |
7c832835 BH |
418 | return NULL; |
419 | } while (test_and_set_bit | |
420 | (i & (BITS_PER_LONG - 1), | |
421 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
422 | #ifdef CCISS_DEBUG |
423 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
424 | #endif | |
7c832835 | 425 | c = h->cmd_pool + i; |
1da177e4 | 426 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
427 | cmd_dma_handle = h->cmd_pool_dhandle |
428 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
429 | c->err_info = h->errinfo_pool + i; |
430 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
431 | err_dma_handle = h->errinfo_pool_dhandle |
432 | + i * sizeof(ErrorInfo_struct); | |
433 | h->nr_allocs++; | |
33079b21 MM |
434 | |
435 | c->cmdindex = i; | |
7c832835 | 436 | } |
1da177e4 LT |
437 | |
438 | c->busaddr = (__u32) cmd_dma_handle; | |
7c832835 | 439 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
440 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
441 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
442 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 443 | |
7c832835 BH |
444 | c->ctlr = h->ctlr; |
445 | return c; | |
1da177e4 LT |
446 | } |
447 | ||
7c832835 BH |
448 | /* |
449 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
450 | */ |
451 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
452 | { | |
453 | int i; | |
454 | u64bit temp64; | |
455 | ||
7c832835 | 456 | if (!got_from_pool) { |
1da177e4 LT |
457 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
458 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
459 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
460 | c->err_info, (dma_addr_t) temp64.val); | |
461 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
462 | c, (dma_addr_t) c->busaddr); | |
463 | } else { | |
1da177e4 | 464 | i = c - h->cmd_pool; |
7c832835 BH |
465 | clear_bit(i & (BITS_PER_LONG - 1), |
466 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
467 | h->nr_frees++; | |
468 | } | |
1da177e4 LT |
469 | } |
470 | ||
471 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
472 | { | |
7c832835 | 473 | return disk->queue->queuedata; |
1da177e4 LT |
474 | } |
475 | ||
476 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
477 | { | |
478 | return disk->private_data; | |
479 | } | |
480 | ||
481 | /* | |
482 | * Open. Make sure the device is really there. | |
483 | */ | |
484 | static int cciss_open(struct inode *inode, struct file *filep) | |
485 | { | |
486 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
487 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
488 | ||
489 | #ifdef CCISS_DEBUG | |
490 | printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name); | |
7c832835 | 491 | #endif /* CCISS_DEBUG */ |
1da177e4 | 492 | |
ddd47442 MM |
493 | if (host->busy_initializing || drv->busy_configuring) |
494 | return -EBUSY; | |
1da177e4 LT |
495 | /* |
496 | * Root is allowed to open raw volume zero even if it's not configured | |
497 | * so array config can still work. Root is also allowed to open any | |
498 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
499 | * disk information. I don't think I really like this | |
500 | * but I'm already using way to many device nodes to claim another one | |
501 | * for "raw controller". | |
502 | */ | |
7a06f789 | 503 | if (drv->heads == 0) { |
7c832835 | 504 | if (iminor(inode) != 0) { /* not node 0? */ |
1da177e4 LT |
505 | /* if not node 0 make sure it is a partition = 0 */ |
506 | if (iminor(inode) & 0x0f) { | |
7c832835 | 507 | return -ENXIO; |
1da177e4 LT |
508 | /* if it is, make sure we have a LUN ID */ |
509 | } else if (drv->LunID == 0) { | |
510 | return -ENXIO; | |
511 | } | |
512 | } | |
513 | if (!capable(CAP_SYS_ADMIN)) | |
514 | return -EPERM; | |
515 | } | |
516 | drv->usage_count++; | |
517 | host->usage_count++; | |
518 | return 0; | |
519 | } | |
7c832835 | 520 | |
1da177e4 LT |
521 | /* |
522 | * Close. Sync first. | |
523 | */ | |
524 | static int cciss_release(struct inode *inode, struct file *filep) | |
525 | { | |
526 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
527 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
528 | ||
529 | #ifdef CCISS_DEBUG | |
7c832835 BH |
530 | printk(KERN_DEBUG "cciss_release %s\n", |
531 | inode->i_bdev->bd_disk->disk_name); | |
532 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
533 | |
534 | drv->usage_count--; | |
535 | host->usage_count--; | |
536 | return 0; | |
537 | } | |
538 | ||
539 | #ifdef CONFIG_COMPAT | |
540 | ||
541 | static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
542 | { | |
543 | int ret; | |
544 | lock_kernel(); | |
6c648be6 | 545 | ret = cciss_ioctl(f->f_path.dentry->d_inode, f, cmd, arg); |
1da177e4 LT |
546 | unlock_kernel(); |
547 | return ret; | |
548 | } | |
549 | ||
7c832835 BH |
550 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
551 | unsigned long arg); | |
552 | static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, | |
553 | unsigned long arg); | |
1da177e4 LT |
554 | |
555 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
556 | { | |
557 | switch (cmd) { | |
558 | case CCISS_GETPCIINFO: | |
559 | case CCISS_GETINTINFO: | |
560 | case CCISS_SETINTINFO: | |
561 | case CCISS_GETNODENAME: | |
562 | case CCISS_SETNODENAME: | |
563 | case CCISS_GETHEARTBEAT: | |
564 | case CCISS_GETBUSTYPES: | |
565 | case CCISS_GETFIRMVER: | |
566 | case CCISS_GETDRIVVER: | |
567 | case CCISS_REVALIDVOLS: | |
568 | case CCISS_DEREGDISK: | |
569 | case CCISS_REGNEWDISK: | |
570 | case CCISS_REGNEWD: | |
571 | case CCISS_RESCANDISK: | |
572 | case CCISS_GETLUNINFO: | |
573 | return do_ioctl(f, cmd, arg); | |
574 | ||
575 | case CCISS_PASSTHRU32: | |
576 | return cciss_ioctl32_passthru(f, cmd, arg); | |
577 | case CCISS_BIG_PASSTHRU32: | |
578 | return cciss_ioctl32_big_passthru(f, cmd, arg); | |
579 | ||
580 | default: | |
581 | return -ENOIOCTLCMD; | |
582 | } | |
583 | } | |
584 | ||
7c832835 BH |
585 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
586 | unsigned long arg) | |
1da177e4 LT |
587 | { |
588 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 589 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
590 | IOCTL_Command_struct arg64; |
591 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
592 | int err; | |
593 | u32 cp; | |
594 | ||
595 | err = 0; | |
7c832835 BH |
596 | err |= |
597 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
598 | sizeof(arg64.LUN_info)); | |
599 | err |= | |
600 | copy_from_user(&arg64.Request, &arg32->Request, | |
601 | sizeof(arg64.Request)); | |
602 | err |= | |
603 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
604 | sizeof(arg64.error_info)); | |
1da177e4 LT |
605 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
606 | err |= get_user(cp, &arg32->buf); | |
607 | arg64.buf = compat_ptr(cp); | |
608 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
609 | ||
610 | if (err) | |
611 | return -EFAULT; | |
612 | ||
7c832835 | 613 | err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
614 | if (err) |
615 | return err; | |
7c832835 BH |
616 | err |= |
617 | copy_in_user(&arg32->error_info, &p->error_info, | |
618 | sizeof(arg32->error_info)); | |
1da177e4 LT |
619 | if (err) |
620 | return -EFAULT; | |
621 | return err; | |
622 | } | |
623 | ||
7c832835 BH |
624 | static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, |
625 | unsigned long arg) | |
1da177e4 LT |
626 | { |
627 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 628 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 629 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
630 | BIG_IOCTL_Command_struct __user *p = |
631 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
632 | int err; |
633 | u32 cp; | |
634 | ||
635 | err = 0; | |
7c832835 BH |
636 | err |= |
637 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
638 | sizeof(arg64.LUN_info)); | |
639 | err |= | |
640 | copy_from_user(&arg64.Request, &arg32->Request, | |
641 | sizeof(arg64.Request)); | |
642 | err |= | |
643 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
644 | sizeof(arg64.error_info)); | |
1da177e4 LT |
645 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
646 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
647 | err |= get_user(cp, &arg32->buf); | |
648 | arg64.buf = compat_ptr(cp); | |
649 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
650 | ||
651 | if (err) | |
7c832835 | 652 | return -EFAULT; |
1da177e4 | 653 | |
7c832835 | 654 | err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
655 | if (err) |
656 | return err; | |
7c832835 BH |
657 | err |= |
658 | copy_in_user(&arg32->error_info, &p->error_info, | |
659 | sizeof(arg32->error_info)); | |
1da177e4 LT |
660 | if (err) |
661 | return -EFAULT; | |
662 | return err; | |
663 | } | |
664 | #endif | |
a885c8c4 CH |
665 | |
666 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
667 | { | |
668 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
669 | ||
670 | if (!drv->cylinders) | |
671 | return -ENXIO; | |
672 | ||
673 | geo->heads = drv->heads; | |
674 | geo->sectors = drv->sectors; | |
675 | geo->cylinders = drv->cylinders; | |
676 | return 0; | |
677 | } | |
678 | ||
1da177e4 | 679 | /* |
7c832835 | 680 | * ioctl |
1da177e4 | 681 | */ |
7c832835 BH |
682 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
683 | unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
684 | { |
685 | struct block_device *bdev = inode->i_bdev; | |
686 | struct gendisk *disk = bdev->bd_disk; | |
687 | ctlr_info_t *host = get_host(disk); | |
688 | drive_info_struct *drv = get_drv(disk); | |
689 | int ctlr = host->ctlr; | |
690 | void __user *argp = (void __user *)arg; | |
691 | ||
692 | #ifdef CCISS_DEBUG | |
693 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
694 | #endif /* CCISS_DEBUG */ |
695 | ||
696 | switch (cmd) { | |
1da177e4 | 697 | case CCISS_GETPCIINFO: |
7c832835 BH |
698 | { |
699 | cciss_pci_info_struct pciinfo; | |
700 | ||
701 | if (!arg) | |
702 | return -EINVAL; | |
703 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
704 | pciinfo.bus = host->pdev->bus->number; | |
705 | pciinfo.dev_fn = host->pdev->devfn; | |
706 | pciinfo.board_id = host->board_id; | |
707 | if (copy_to_user | |
708 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
709 | return -EFAULT; | |
710 | return 0; | |
711 | } | |
1da177e4 | 712 | case CCISS_GETINTINFO: |
7c832835 BH |
713 | { |
714 | cciss_coalint_struct intinfo; | |
715 | if (!arg) | |
716 | return -EINVAL; | |
717 | intinfo.delay = | |
718 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
719 | intinfo.count = | |
720 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
721 | if (copy_to_user | |
722 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
723 | return -EFAULT; | |
724 | return 0; | |
725 | } | |
1da177e4 | 726 | case CCISS_SETINTINFO: |
1da177e4 | 727 | { |
7c832835 BH |
728 | cciss_coalint_struct intinfo; |
729 | unsigned long flags; | |
730 | int i; | |
731 | ||
732 | if (!arg) | |
733 | return -EINVAL; | |
734 | if (!capable(CAP_SYS_ADMIN)) | |
735 | return -EPERM; | |
736 | if (copy_from_user | |
737 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
738 | return -EFAULT; | |
739 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
740 | { | |
741 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
742 | return -EINVAL; | |
743 | } | |
744 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
745 | /* Update the field, and then ring the doorbell */ | |
746 | writel(intinfo.delay, | |
747 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
748 | writel(intinfo.count, | |
749 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
750 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
751 | ||
752 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
753 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
754 | & CFGTBL_ChangeReq)) | |
755 | break; | |
756 | /* delay and try again */ | |
757 | udelay(1000); | |
758 | } | |
759 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
760 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
761 | return -EAGAIN; | |
762 | return 0; | |
1da177e4 | 763 | } |
1da177e4 | 764 | case CCISS_GETNODENAME: |
7c832835 BH |
765 | { |
766 | NodeName_type NodeName; | |
767 | int i; | |
768 | ||
769 | if (!arg) | |
770 | return -EINVAL; | |
771 | for (i = 0; i < 16; i++) | |
772 | NodeName[i] = | |
773 | readb(&host->cfgtable->ServerName[i]); | |
774 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
775 | return -EFAULT; | |
776 | return 0; | |
777 | } | |
1da177e4 | 778 | case CCISS_SETNODENAME: |
7c832835 BH |
779 | { |
780 | NodeName_type NodeName; | |
781 | unsigned long flags; | |
782 | int i; | |
783 | ||
784 | if (!arg) | |
785 | return -EINVAL; | |
786 | if (!capable(CAP_SYS_ADMIN)) | |
787 | return -EPERM; | |
788 | ||
789 | if (copy_from_user | |
790 | (NodeName, argp, sizeof(NodeName_type))) | |
791 | return -EFAULT; | |
792 | ||
793 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
794 | ||
795 | /* Update the field, and then ring the doorbell */ | |
796 | for (i = 0; i < 16; i++) | |
797 | writeb(NodeName[i], | |
798 | &host->cfgtable->ServerName[i]); | |
799 | ||
800 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
801 | ||
802 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
803 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
804 | & CFGTBL_ChangeReq)) | |
805 | break; | |
806 | /* delay and try again */ | |
807 | udelay(1000); | |
808 | } | |
809 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
810 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
811 | return -EAGAIN; | |
812 | return 0; | |
813 | } | |
1da177e4 LT |
814 | |
815 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
816 | { |
817 | Heartbeat_type heartbeat; | |
818 | ||
819 | if (!arg) | |
820 | return -EINVAL; | |
821 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
822 | if (copy_to_user | |
823 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
824 | return -EFAULT; | |
825 | return 0; | |
826 | } | |
1da177e4 | 827 | case CCISS_GETBUSTYPES: |
7c832835 BH |
828 | { |
829 | BusTypes_type BusTypes; | |
830 | ||
831 | if (!arg) | |
832 | return -EINVAL; | |
833 | BusTypes = readl(&host->cfgtable->BusTypes); | |
834 | if (copy_to_user | |
835 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
836 | return -EFAULT; | |
837 | return 0; | |
838 | } | |
1da177e4 | 839 | case CCISS_GETFIRMVER: |
7c832835 BH |
840 | { |
841 | FirmwareVer_type firmware; | |
1da177e4 | 842 | |
7c832835 BH |
843 | if (!arg) |
844 | return -EINVAL; | |
845 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 846 | |
7c832835 BH |
847 | if (copy_to_user |
848 | (argp, firmware, sizeof(FirmwareVer_type))) | |
849 | return -EFAULT; | |
850 | return 0; | |
851 | } | |
852 | case CCISS_GETDRIVVER: | |
853 | { | |
854 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 855 | |
7c832835 BH |
856 | if (!arg) |
857 | return -EINVAL; | |
1da177e4 | 858 | |
7c832835 BH |
859 | if (copy_to_user |
860 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
861 | return -EFAULT; | |
862 | return 0; | |
863 | } | |
1da177e4 LT |
864 | |
865 | case CCISS_REVALIDVOLS: | |
3833a748 | 866 | return rebuild_lun_table(host, NULL); |
7c832835 BH |
867 | |
868 | case CCISS_GETLUNINFO:{ | |
869 | LogvolInfo_struct luninfo; | |
870 | ||
871 | luninfo.LunID = drv->LunID; | |
872 | luninfo.num_opens = drv->usage_count; | |
873 | luninfo.num_parts = 0; | |
874 | if (copy_to_user(argp, &luninfo, | |
875 | sizeof(LogvolInfo_struct))) | |
876 | return -EFAULT; | |
877 | return 0; | |
878 | } | |
1da177e4 | 879 | case CCISS_DEREGDISK: |
ddd47442 | 880 | return rebuild_lun_table(host, disk); |
1da177e4 LT |
881 | |
882 | case CCISS_REGNEWD: | |
ddd47442 | 883 | return rebuild_lun_table(host, NULL); |
1da177e4 LT |
884 | |
885 | case CCISS_PASSTHRU: | |
1da177e4 | 886 | { |
7c832835 BH |
887 | IOCTL_Command_struct iocommand; |
888 | CommandList_struct *c; | |
889 | char *buff = NULL; | |
890 | u64bit temp64; | |
891 | unsigned long flags; | |
6e9a4738 | 892 | DECLARE_COMPLETION_ONSTACK(wait); |
1da177e4 | 893 | |
7c832835 BH |
894 | if (!arg) |
895 | return -EINVAL; | |
1da177e4 | 896 | |
7c832835 BH |
897 | if (!capable(CAP_SYS_RAWIO)) |
898 | return -EPERM; | |
1da177e4 | 899 | |
7c832835 BH |
900 | if (copy_from_user |
901 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
902 | return -EFAULT; | |
903 | if ((iocommand.buf_size < 1) && | |
904 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
905 | return -EINVAL; | |
906 | } | |
907 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
908 | /* Check kmalloc limits */ | |
909 | if (iocommand.buf_size > 128000) | |
910 | return -EINVAL; | |
911 | #endif | |
912 | if (iocommand.buf_size > 0) { | |
913 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
914 | if (buff == NULL) | |
915 | return -EFAULT; | |
916 | } | |
917 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
918 | /* Copy the data into the buffer we created */ | |
919 | if (copy_from_user | |
920 | (buff, iocommand.buf, iocommand.buf_size)) { | |
921 | kfree(buff); | |
922 | return -EFAULT; | |
923 | } | |
924 | } else { | |
925 | memset(buff, 0, iocommand.buf_size); | |
926 | } | |
927 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
928 | kfree(buff); | |
929 | return -ENOMEM; | |
930 | } | |
931 | // Fill in the command type | |
932 | c->cmd_type = CMD_IOCTL_PEND; | |
933 | // Fill in Command Header | |
934 | c->Header.ReplyQueue = 0; // unused in simple mode | |
935 | if (iocommand.buf_size > 0) // buffer to fill | |
936 | { | |
937 | c->Header.SGList = 1; | |
938 | c->Header.SGTotal = 1; | |
939 | } else // no buffers to fill | |
940 | { | |
941 | c->Header.SGList = 0; | |
942 | c->Header.SGTotal = 0; | |
943 | } | |
944 | c->Header.LUN = iocommand.LUN_info; | |
945 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag | |
1da177e4 | 946 | |
7c832835 BH |
947 | // Fill in Request block |
948 | c->Request = iocommand.Request; | |
1da177e4 | 949 | |
7c832835 BH |
950 | // Fill in the scatter gather information |
951 | if (iocommand.buf_size > 0) { | |
952 | temp64.val = pci_map_single(host->pdev, buff, | |
953 | iocommand.buf_size, | |
954 | PCI_DMA_BIDIRECTIONAL); | |
955 | c->SG[0].Addr.lower = temp64.val32.lower; | |
956 | c->SG[0].Addr.upper = temp64.val32.upper; | |
957 | c->SG[0].Len = iocommand.buf_size; | |
958 | c->SG[0].Ext = 0; // we are not chaining | |
959 | } | |
960 | c->waiting = &wait; | |
961 | ||
962 | /* Put the request on the tail of the request queue */ | |
963 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
964 | addQ(&host->reqQ, c); | |
965 | host->Qdepth++; | |
966 | start_io(host); | |
967 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
968 | ||
969 | wait_for_completion(&wait); | |
970 | ||
971 | /* unlock the buffers from DMA */ | |
972 | temp64.val32.lower = c->SG[0].Addr.lower; | |
973 | temp64.val32.upper = c->SG[0].Addr.upper; | |
974 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
975 | iocommand.buf_size, | |
976 | PCI_DMA_BIDIRECTIONAL); | |
977 | ||
978 | /* Copy the error information out */ | |
979 | iocommand.error_info = *(c->err_info); | |
980 | if (copy_to_user | |
981 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
982 | kfree(buff); | |
1da177e4 LT |
983 | cmd_free(host, c, 0); |
984 | return -EFAULT; | |
985 | } | |
7c832835 BH |
986 | |
987 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
988 | /* Copy the data out of the buffer we created */ | |
989 | if (copy_to_user | |
990 | (iocommand.buf, buff, iocommand.buf_size)) { | |
991 | kfree(buff); | |
992 | cmd_free(host, c, 0); | |
993 | return -EFAULT; | |
994 | } | |
995 | } | |
996 | kfree(buff); | |
997 | cmd_free(host, c, 0); | |
998 | return 0; | |
1da177e4 | 999 | } |
7c832835 BH |
1000 | case CCISS_BIG_PASSTHRU:{ |
1001 | BIG_IOCTL_Command_struct *ioc; | |
1002 | CommandList_struct *c; | |
1003 | unsigned char **buff = NULL; | |
1004 | int *buff_size = NULL; | |
1005 | u64bit temp64; | |
1006 | unsigned long flags; | |
1007 | BYTE sg_used = 0; | |
1008 | int status = 0; | |
1009 | int i; | |
6e9a4738 | 1010 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1011 | __u32 left; |
1012 | __u32 sz; | |
1013 | BYTE __user *data_ptr; | |
1014 | ||
1015 | if (!arg) | |
1016 | return -EINVAL; | |
1017 | if (!capable(CAP_SYS_RAWIO)) | |
1018 | return -EPERM; | |
1019 | ioc = (BIG_IOCTL_Command_struct *) | |
1020 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1021 | if (!ioc) { | |
1022 | status = -ENOMEM; | |
1023 | goto cleanup1; | |
1024 | } | |
1025 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1026 | status = -EFAULT; | |
1027 | goto cleanup1; | |
1028 | } | |
1029 | if ((ioc->buf_size < 1) && | |
1030 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1031 | status = -EINVAL; |
1032 | goto cleanup1; | |
7c832835 BH |
1033 | } |
1034 | /* Check kmalloc limits using all SGs */ | |
1035 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1036 | status = -EINVAL; | |
1037 | goto cleanup1; | |
1038 | } | |
1039 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1040 | status = -EINVAL; | |
1041 | goto cleanup1; | |
1042 | } | |
1043 | buff = | |
1044 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1045 | if (!buff) { | |
1da177e4 LT |
1046 | status = -ENOMEM; |
1047 | goto cleanup1; | |
1048 | } | |
5cbded58 | 1049 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
7c832835 BH |
1050 | GFP_KERNEL); |
1051 | if (!buff_size) { | |
1052 | status = -ENOMEM; | |
1053 | goto cleanup1; | |
1054 | } | |
1055 | left = ioc->buf_size; | |
1056 | data_ptr = ioc->buf; | |
1057 | while (left) { | |
1058 | sz = (left > | |
1059 | ioc->malloc_size) ? ioc-> | |
1060 | malloc_size : left; | |
1061 | buff_size[sg_used] = sz; | |
1062 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1063 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1064 | status = -ENOMEM; |
15534d38 JA |
1065 | goto cleanup1; |
1066 | } | |
7c832835 BH |
1067 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1068 | if (copy_from_user | |
1069 | (buff[sg_used], data_ptr, sz)) { | |
1070 | status = -ENOMEM; | |
1071 | goto cleanup1; | |
1072 | } | |
1073 | } else { | |
1074 | memset(buff[sg_used], 0, sz); | |
1075 | } | |
1076 | left -= sz; | |
1077 | data_ptr += sz; | |
1078 | sg_used++; | |
1079 | } | |
1080 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1081 | status = -ENOMEM; | |
1082 | goto cleanup1; | |
1083 | } | |
1084 | c->cmd_type = CMD_IOCTL_PEND; | |
1085 | c->Header.ReplyQueue = 0; | |
1086 | ||
1087 | if (ioc->buf_size > 0) { | |
1088 | c->Header.SGList = sg_used; | |
1089 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1090 | } else { |
7c832835 BH |
1091 | c->Header.SGList = 0; |
1092 | c->Header.SGTotal = 0; | |
1da177e4 | 1093 | } |
7c832835 BH |
1094 | c->Header.LUN = ioc->LUN_info; |
1095 | c->Header.Tag.lower = c->busaddr; | |
1096 | ||
1097 | c->Request = ioc->Request; | |
1098 | if (ioc->buf_size > 0) { | |
1099 | int i; | |
1100 | for (i = 0; i < sg_used; i++) { | |
1101 | temp64.val = | |
1102 | pci_map_single(host->pdev, buff[i], | |
1103 | buff_size[i], | |
1104 | PCI_DMA_BIDIRECTIONAL); | |
1105 | c->SG[i].Addr.lower = | |
1106 | temp64.val32.lower; | |
1107 | c->SG[i].Addr.upper = | |
1108 | temp64.val32.upper; | |
1109 | c->SG[i].Len = buff_size[i]; | |
1110 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1111 | } | |
1112 | } | |
1113 | c->waiting = &wait; | |
1114 | /* Put the request on the tail of the request queue */ | |
1115 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1116 | addQ(&host->reqQ, c); | |
1117 | host->Qdepth++; | |
1118 | start_io(host); | |
1119 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1120 | wait_for_completion(&wait); | |
1121 | /* unlock the buffers from DMA */ | |
1122 | for (i = 0; i < sg_used; i++) { | |
1123 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1124 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1125 | pci_unmap_single(host->pdev, | |
1126 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1127 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1128 | } |
7c832835 BH |
1129 | /* Copy the error information out */ |
1130 | ioc->error_info = *(c->err_info); | |
1131 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1132 | cmd_free(host, c, 0); | |
1133 | status = -EFAULT; | |
1134 | goto cleanup1; | |
1135 | } | |
1136 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1137 | /* Copy the data out of the buffer we created */ | |
1138 | BYTE __user *ptr = ioc->buf; | |
1139 | for (i = 0; i < sg_used; i++) { | |
1140 | if (copy_to_user | |
1141 | (ptr, buff[i], buff_size[i])) { | |
1142 | cmd_free(host, c, 0); | |
1143 | status = -EFAULT; | |
1144 | goto cleanup1; | |
1145 | } | |
1146 | ptr += buff_size[i]; | |
1da177e4 | 1147 | } |
1da177e4 | 1148 | } |
7c832835 BH |
1149 | cmd_free(host, c, 0); |
1150 | status = 0; | |
1151 | cleanup1: | |
1152 | if (buff) { | |
1153 | for (i = 0; i < sg_used; i++) | |
1154 | kfree(buff[i]); | |
1155 | kfree(buff); | |
1156 | } | |
1157 | kfree(buff_size); | |
1158 | kfree(ioc); | |
1159 | return status; | |
1da177e4 | 1160 | } |
03bbfee5 MMOD |
1161 | |
1162 | /* scsi_cmd_ioctl handles these, below, though some are not */ | |
1163 | /* very meaningful for cciss. SG_IO is the main one people want. */ | |
1164 | ||
1165 | case SG_GET_VERSION_NUM: | |
1166 | case SG_SET_TIMEOUT: | |
1167 | case SG_GET_TIMEOUT: | |
1168 | case SG_GET_RESERVED_SIZE: | |
1169 | case SG_SET_RESERVED_SIZE: | |
1170 | case SG_EMULATED_HOST: | |
1171 | case SG_IO: | |
1172 | case SCSI_IOCTL_SEND_COMMAND: | |
9793c326 | 1173 | return scsi_cmd_ioctl(filep, disk->queue, disk, cmd, argp); |
03bbfee5 MMOD |
1174 | |
1175 | /* scsi_cmd_ioctl would normally handle these, below, but */ | |
1176 | /* they aren't a good fit for cciss, as CD-ROMs are */ | |
1177 | /* not supported, and we don't have any bus/target/lun */ | |
1178 | /* which we present to the kernel. */ | |
1179 | ||
1180 | case CDROM_SEND_PACKET: | |
1181 | case CDROMCLOSETRAY: | |
1182 | case CDROMEJECT: | |
1183 | case SCSI_IOCTL_GET_IDLUN: | |
1184 | case SCSI_IOCTL_GET_BUS_NUMBER: | |
1da177e4 LT |
1185 | default: |
1186 | return -ENOTTY; | |
1187 | } | |
1da177e4 LT |
1188 | } |
1189 | ||
ca1e0484 MM |
1190 | static inline void complete_buffers(struct bio *bio, int status) |
1191 | { | |
1192 | while (bio) { | |
1193 | struct bio *xbh = bio->bi_next; | |
ca1e0484 MM |
1194 | |
1195 | bio->bi_next = NULL; | |
6712ecf8 | 1196 | bio_endio(bio, status ? 0 : -EIO); |
ca1e0484 MM |
1197 | bio = xbh; |
1198 | } | |
ca1e0484 MM |
1199 | } |
1200 | ||
7b30f092 JA |
1201 | static void cciss_check_queues(ctlr_info_t *h) |
1202 | { | |
1203 | int start_queue = h->next_to_run; | |
1204 | int i; | |
1205 | ||
1206 | /* check to see if we have maxed out the number of commands that can | |
1207 | * be placed on the queue. If so then exit. We do this check here | |
1208 | * in case the interrupt we serviced was from an ioctl and did not | |
1209 | * free any new commands. | |
1210 | */ | |
f880632f | 1211 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1212 | return; |
1213 | ||
1214 | /* We have room on the queue for more commands. Now we need to queue | |
1215 | * them up. We will also keep track of the next queue to run so | |
1216 | * that every queue gets a chance to be started first. | |
1217 | */ | |
1218 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1219 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1220 | /* make sure the disk has been added and the drive is real | |
1221 | * because this can be called from the middle of init_one. | |
1222 | */ | |
1223 | if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads)) | |
1224 | continue; | |
1225 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1226 | ||
1227 | /* check to see if we have maxed out the number of commands | |
1228 | * that can be placed on the queue. | |
1229 | */ | |
f880632f | 1230 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1231 | if (curr_queue == start_queue) { |
1232 | h->next_to_run = | |
1233 | (start_queue + 1) % (h->highest_lun + 1); | |
1234 | break; | |
1235 | } else { | |
1236 | h->next_to_run = curr_queue; | |
1237 | break; | |
1238 | } | |
1239 | } else { | |
1240 | curr_queue = (curr_queue + 1) % (h->highest_lun + 1); | |
1241 | } | |
1242 | } | |
1243 | } | |
1244 | ||
ca1e0484 MM |
1245 | static void cciss_softirq_done(struct request *rq) |
1246 | { | |
1247 | CommandList_struct *cmd = rq->completion_data; | |
1248 | ctlr_info_t *h = hba[cmd->ctlr]; | |
1249 | unsigned long flags; | |
1250 | u64bit temp64; | |
1251 | int i, ddir; | |
1252 | ||
1253 | if (cmd->Request.Type.Direction == XFER_READ) | |
1254 | ddir = PCI_DMA_FROMDEVICE; | |
1255 | else | |
1256 | ddir = PCI_DMA_TODEVICE; | |
1257 | ||
1258 | /* command did not need to be retried */ | |
1259 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1260 | for (i = 0; i < cmd->Header.SGList; i++) { |
ca1e0484 MM |
1261 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
1262 | temp64.val32.upper = cmd->SG[i].Addr.upper; | |
1263 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); | |
1264 | } | |
1265 | ||
198b7660 | 1266 | complete_buffers(rq->bio, (rq->errors == 0)); |
ca1e0484 | 1267 | |
b369c2cf JA |
1268 | if (blk_fs_request(rq)) { |
1269 | const int rw = rq_data_dir(rq); | |
1270 | ||
1271 | disk_stat_add(rq->rq_disk, sectors[rw], rq->nr_sectors); | |
1272 | } | |
1273 | ||
ca1e0484 MM |
1274 | #ifdef CCISS_DEBUG |
1275 | printk("Done with %p\n", rq); | |
7c832835 | 1276 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1277 | |
8bd0b97e | 1278 | add_disk_randomness(rq->rq_disk); |
ca1e0484 | 1279 | spin_lock_irqsave(&h->lock, flags); |
198b7660 | 1280 | end_that_request_last(rq, (rq->errors == 0)); |
7c832835 | 1281 | cmd_free(h, cmd, 1); |
7b30f092 | 1282 | cciss_check_queues(h); |
ca1e0484 MM |
1283 | spin_unlock_irqrestore(&h->lock, flags); |
1284 | } | |
1285 | ||
ddd47442 MM |
1286 | /* This function will check the usage_count of the drive to be updated/added. |
1287 | * If the usage_count is zero then the drive information will be updated and | |
1288 | * the disk will be re-registered with the kernel. If not then it will be | |
1289 | * left alone for the next reboot. The exception to this is disk 0 which | |
1290 | * will always be left registered with the kernel since it is also the | |
1291 | * controller node. Any changes to disk 0 will show up on the next | |
1292 | * reboot. | |
7c832835 | 1293 | */ |
ddd47442 | 1294 | static void cciss_update_drive_info(int ctlr, int drv_index) |
7c832835 | 1295 | { |
ddd47442 MM |
1296 | ctlr_info_t *h = hba[ctlr]; |
1297 | struct gendisk *disk; | |
ddd47442 MM |
1298 | InquiryData_struct *inq_buff = NULL; |
1299 | unsigned int block_size; | |
00988a35 | 1300 | sector_t total_size; |
ddd47442 MM |
1301 | unsigned long flags = 0; |
1302 | int ret = 0; | |
1303 | ||
7c832835 BH |
1304 | /* if the disk already exists then deregister it before proceeding */ |
1305 | if (h->drv[drv_index].raid_level != -1) { | |
ddd47442 MM |
1306 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
1307 | h->drv[drv_index].busy_configuring = 1; | |
1308 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1309 | ret = deregister_disk(h->gendisk[drv_index], | |
7c832835 | 1310 | &h->drv[drv_index], 0); |
ddd47442 MM |
1311 | h->drv[drv_index].busy_configuring = 0; |
1312 | } | |
1313 | ||
1314 | /* If the disk is in use return */ | |
1315 | if (ret) | |
1316 | return; | |
1317 | ||
d14c4ab5 | 1318 | /* Get information about the disk and modify the driver structure */ |
7c832835 | 1319 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
ddd47442 MM |
1320 | if (inq_buff == NULL) |
1321 | goto mem_msg; | |
1322 | ||
97c06978 MMOD |
1323 | /* testing to see if 16-byte CDBs are already being used */ |
1324 | if (h->cciss_read == CCISS_READ_16) { | |
1325 | cciss_read_capacity_16(h->ctlr, drv_index, 1, | |
1326 | &total_size, &block_size); | |
1327 | goto geo_inq; | |
1328 | } | |
1329 | ||
00988a35 | 1330 | cciss_read_capacity(ctlr, drv_index, 1, |
7c832835 | 1331 | &total_size, &block_size); |
00988a35 | 1332 | |
97c06978 MMOD |
1333 | /* if read_capacity returns all F's this volume is >2TB in size */ |
1334 | /* so we switch to 16-byte CDB's for all read/write ops */ | |
1335 | if (total_size == 0xFFFFFFFFULL) { | |
00988a35 MMOD |
1336 | cciss_read_capacity_16(ctlr, drv_index, 1, |
1337 | &total_size, &block_size); | |
1338 | h->cciss_read = CCISS_READ_16; | |
1339 | h->cciss_write = CCISS_WRITE_16; | |
1340 | } else { | |
1341 | h->cciss_read = CCISS_READ_10; | |
1342 | h->cciss_write = CCISS_WRITE_10; | |
1343 | } | |
97c06978 | 1344 | geo_inq: |
ddd47442 | 1345 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, |
7c832835 | 1346 | inq_buff, &h->drv[drv_index]); |
ddd47442 MM |
1347 | |
1348 | ++h->num_luns; | |
1349 | disk = h->gendisk[drv_index]; | |
1350 | set_capacity(disk, h->drv[drv_index].nr_blocks); | |
1351 | ||
ddd47442 | 1352 | /* if it's the controller it's already added */ |
7c832835 | 1353 | if (drv_index) { |
ddd47442 | 1354 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
799202cb MM |
1355 | sprintf(disk->disk_name, "cciss/c%dd%d", ctlr, drv_index); |
1356 | disk->major = h->major; | |
1357 | disk->first_minor = drv_index << NWD_SHIFT; | |
1358 | disk->fops = &cciss_fops; | |
1359 | disk->private_data = &h->drv[drv_index]; | |
ddd47442 MM |
1360 | |
1361 | /* Set up queue information */ | |
1362 | disk->queue->backing_dev_info.ra_pages = READ_AHEAD; | |
1363 | blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask); | |
1364 | ||
1365 | /* This is a hardware imposed limit. */ | |
1366 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); | |
1367 | ||
1368 | /* This is a limit in the driver and could be eliminated. */ | |
1369 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); | |
1370 | ||
92c4231a | 1371 | blk_queue_max_sectors(disk->queue, h->cciss_max_sectors); |
ddd47442 | 1372 | |
ca1e0484 MM |
1373 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
1374 | ||
ddd47442 MM |
1375 | disk->queue->queuedata = hba[ctlr]; |
1376 | ||
1377 | blk_queue_hardsect_size(disk->queue, | |
7c832835 | 1378 | hba[ctlr]->drv[drv_index].block_size); |
ddd47442 MM |
1379 | |
1380 | h->drv[drv_index].queue = disk->queue; | |
1381 | add_disk(disk); | |
1382 | } | |
1383 | ||
7c832835 | 1384 | freeret: |
ddd47442 MM |
1385 | kfree(inq_buff); |
1386 | return; | |
7c832835 | 1387 | mem_msg: |
ddd47442 MM |
1388 | printk(KERN_ERR "cciss: out of memory\n"); |
1389 | goto freeret; | |
1390 | } | |
1391 | ||
1392 | /* This function will find the first index of the controllers drive array | |
1393 | * that has a -1 for the raid_level and will return that index. This is | |
1394 | * where new drives will be added. If the index to be returned is greater | |
1395 | * than the highest_lun index for the controller then highest_lun is set | |
1396 | * to this new index. If there are no available indexes then -1 is returned. | |
7c832835 | 1397 | */ |
ddd47442 MM |
1398 | static int cciss_find_free_drive_index(int ctlr) |
1399 | { | |
1400 | int i; | |
1401 | ||
7c832835 BH |
1402 | for (i = 0; i < CISS_MAX_LUN; i++) { |
1403 | if (hba[ctlr]->drv[i].raid_level == -1) { | |
ddd47442 MM |
1404 | if (i > hba[ctlr]->highest_lun) |
1405 | hba[ctlr]->highest_lun = i; | |
1406 | return i; | |
1407 | } | |
1408 | } | |
1409 | return -1; | |
1410 | } | |
1411 | ||
1412 | /* This function will add and remove logical drives from the Logical | |
d14c4ab5 | 1413 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
1414 | * so that mount points are preserved until the next reboot. This allows |
1415 | * for the removal of logical drives in the middle of the drive array | |
1416 | * without a re-ordering of those drives. | |
1417 | * INPUT | |
1418 | * h = The controller to perform the operations on | |
1419 | * del_disk = The disk to remove if specified. If the value given | |
1420 | * is NULL then no disk is removed. | |
7c832835 | 1421 | */ |
ddd47442 | 1422 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk) |
1da177e4 | 1423 | { |
ddd47442 MM |
1424 | int ctlr = h->ctlr; |
1425 | int num_luns; | |
1426 | ReportLunData_struct *ld_buff = NULL; | |
1427 | drive_info_struct *drv = NULL; | |
1428 | int return_code; | |
1429 | int listlength = 0; | |
1430 | int i; | |
1431 | int drv_found; | |
1432 | int drv_index = 0; | |
1433 | __u32 lunid = 0; | |
1da177e4 | 1434 | unsigned long flags; |
ddd47442 MM |
1435 | |
1436 | /* Set busy_configuring flag for this operation */ | |
1437 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 1438 | if (h->busy_configuring) { |
ddd47442 MM |
1439 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
1440 | return -EBUSY; | |
1441 | } | |
1442 | h->busy_configuring = 1; | |
1443 | ||
1444 | /* if del_disk is NULL then we are being called to add a new disk | |
1445 | * and update the logical drive table. If it is not NULL then | |
1446 | * we will check if the disk is in use or not. | |
1447 | */ | |
7c832835 | 1448 | if (del_disk != NULL) { |
ddd47442 MM |
1449 | drv = get_drv(del_disk); |
1450 | drv->busy_configuring = 1; | |
1451 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1452 | return_code = deregister_disk(del_disk, drv, 1); | |
1453 | drv->busy_configuring = 0; | |
1454 | h->busy_configuring = 0; | |
1455 | return return_code; | |
1456 | } else { | |
1457 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1458 | if (!capable(CAP_SYS_RAWIO)) | |
1459 | return -EPERM; | |
1460 | ||
1461 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); | |
1462 | if (ld_buff == NULL) | |
1463 | goto mem_msg; | |
1464 | ||
1465 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
7c832835 BH |
1466 | sizeof(ReportLunData_struct), 0, |
1467 | 0, 0, TYPE_CMD); | |
1468 | ||
1469 | if (return_code == IO_OK) { | |
799202cb | 1470 | listlength = |
4c1f2b31 | 1471 | be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); |
7c832835 | 1472 | } else { /* reading number of logical volumes failed */ |
ddd47442 | 1473 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 1474 | " command failed\n"); |
ddd47442 MM |
1475 | listlength = 0; |
1476 | goto freeret; | |
1477 | } | |
1478 | ||
1479 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
7c832835 | 1480 | if (num_luns > CISS_MAX_LUN) { |
ddd47442 MM |
1481 | num_luns = CISS_MAX_LUN; |
1482 | printk(KERN_WARNING "cciss: more luns configured" | |
7c832835 BH |
1483 | " on controller than can be handled by" |
1484 | " this driver.\n"); | |
ddd47442 MM |
1485 | } |
1486 | ||
1487 | /* Compare controller drive array to drivers drive array. | |
7c832835 BH |
1488 | * Check for updates in the drive information and any new drives |
1489 | * on the controller. | |
1490 | */ | |
1491 | for (i = 0; i < num_luns; i++) { | |
ddd47442 MM |
1492 | int j; |
1493 | ||
1494 | drv_found = 0; | |
1495 | ||
7c832835 BH |
1496 | lunid = (0xff & |
1497 | (unsigned int)(ld_buff->LUN[i][3])) << 24; | |
1498 | lunid |= (0xff & | |
1499 | (unsigned int)(ld_buff->LUN[i][2])) << 16; | |
1500 | lunid |= (0xff & | |
1501 | (unsigned int)(ld_buff->LUN[i][1])) << 8; | |
1502 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
ddd47442 MM |
1503 | |
1504 | /* Find if the LUN is already in the drive array | |
1505 | * of the controller. If so then update its info | |
1506 | * if not is use. If it does not exist then find | |
1507 | * the first free index and add it. | |
7c832835 BH |
1508 | */ |
1509 | for (j = 0; j <= h->highest_lun; j++) { | |
1510 | if (h->drv[j].LunID == lunid) { | |
ddd47442 MM |
1511 | drv_index = j; |
1512 | drv_found = 1; | |
1513 | } | |
1514 | } | |
1515 | ||
1516 | /* check if the drive was found already in the array */ | |
7c832835 | 1517 | if (!drv_found) { |
ddd47442 MM |
1518 | drv_index = cciss_find_free_drive_index(ctlr); |
1519 | if (drv_index == -1) | |
1520 | goto freeret; | |
1521 | ||
799202cb MM |
1522 | /*Check if the gendisk needs to be allocated */ |
1523 | if (!h->gendisk[drv_index]){ | |
1524 | h->gendisk[drv_index] = alloc_disk(1 << NWD_SHIFT); | |
1525 | if (!h->gendisk[drv_index]){ | |
1526 | printk(KERN_ERR "cciss: could not allocate new disk %d\n", drv_index); | |
1527 | goto mem_msg; | |
1528 | } | |
1529 | } | |
ddd47442 MM |
1530 | } |
1531 | h->drv[drv_index].LunID = lunid; | |
1532 | cciss_update_drive_info(ctlr, drv_index); | |
7c832835 BH |
1533 | } /* end for */ |
1534 | } /* end else */ | |
ddd47442 | 1535 | |
7c832835 | 1536 | freeret: |
ddd47442 MM |
1537 | kfree(ld_buff); |
1538 | h->busy_configuring = 0; | |
1539 | /* We return -1 here to tell the ACU that we have registered/updated | |
1540 | * all of the drives that we can and to keep it from calling us | |
1541 | * additional times. | |
7c832835 | 1542 | */ |
ddd47442 | 1543 | return -1; |
7c832835 | 1544 | mem_msg: |
ddd47442 MM |
1545 | printk(KERN_ERR "cciss: out of memory\n"); |
1546 | goto freeret; | |
1547 | } | |
1548 | ||
1549 | /* This function will deregister the disk and it's queue from the | |
1550 | * kernel. It must be called with the controller lock held and the | |
1551 | * drv structures busy_configuring flag set. It's parameters are: | |
1552 | * | |
1553 | * disk = This is the disk to be deregistered | |
1554 | * drv = This is the drive_info_struct associated with the disk to be | |
1555 | * deregistered. It contains information about the disk used | |
1556 | * by the driver. | |
1557 | * clear_all = This flag determines whether or not the disk information | |
1558 | * is going to be completely cleared out and the highest_lun | |
1559 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 1560 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
1561 | * the highest_lun should be left unchanged and the LunID |
1562 | * should not be cleared. | |
1563 | */ | |
1564 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, | |
1565 | int clear_all) | |
1566 | { | |
799202cb | 1567 | int i; |
1da177e4 | 1568 | ctlr_info_t *h = get_host(disk); |
1da177e4 LT |
1569 | |
1570 | if (!capable(CAP_SYS_RAWIO)) | |
1571 | return -EPERM; | |
1572 | ||
1da177e4 | 1573 | /* make sure logical volume is NOT is use */ |
7c832835 BH |
1574 | if (clear_all || (h->gendisk[0] == disk)) { |
1575 | if (drv->usage_count > 1) | |
1576 | return -EBUSY; | |
1577 | } else if (drv->usage_count > 0) | |
1578 | return -EBUSY; | |
1da177e4 | 1579 | |
ddd47442 MM |
1580 | /* invalidate the devices and deregister the disk. If it is disk |
1581 | * zero do not deregister it but just zero out it's values. This | |
1582 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
1583 | */ |
1584 | if (h->gendisk[0] != disk) { | |
5a9df732 AB |
1585 | struct request_queue *q = disk->queue; |
1586 | if (disk->flags & GENHD_FL_UP) | |
1587 | del_gendisk(disk); | |
1588 | if (q) { | |
1589 | blk_cleanup_queue(q); | |
1590 | /* Set drv->queue to NULL so that we do not try | |
1591 | * to call blk_start_queue on this queue in the | |
1592 | * interrupt handler | |
1593 | */ | |
1594 | drv->queue = NULL; | |
1595 | } | |
1596 | /* If clear_all is set then we are deleting the logical | |
1597 | * drive, not just refreshing its info. For drives | |
1598 | * other than disk 0 we will call put_disk. We do not | |
1599 | * do this for disk 0 as we need it to be able to | |
1600 | * configure the controller. | |
1601 | */ | |
1602 | if (clear_all){ | |
1603 | /* This isn't pretty, but we need to find the | |
1604 | * disk in our array and NULL our the pointer. | |
1605 | * This is so that we will call alloc_disk if | |
1606 | * this index is used again later. | |
799202cb | 1607 | */ |
5a9df732 AB |
1608 | for (i=0; i < CISS_MAX_LUN; i++){ |
1609 | if(h->gendisk[i] == disk){ | |
1610 | h->gendisk[i] = NULL; | |
1611 | break; | |
799202cb | 1612 | } |
799202cb | 1613 | } |
5a9df732 | 1614 | put_disk(disk); |
ddd47442 | 1615 | } |
799202cb MM |
1616 | } else { |
1617 | set_capacity(disk, 0); | |
ddd47442 MM |
1618 | } |
1619 | ||
1620 | --h->num_luns; | |
1621 | /* zero out the disk size info */ | |
1622 | drv->nr_blocks = 0; | |
1623 | drv->block_size = 0; | |
1624 | drv->heads = 0; | |
1625 | drv->sectors = 0; | |
1626 | drv->cylinders = 0; | |
1627 | drv->raid_level = -1; /* This can be used as a flag variable to | |
1628 | * indicate that this element of the drive | |
1629 | * array is free. | |
7c832835 BH |
1630 | */ |
1631 | ||
1632 | if (clear_all) { | |
1633 | /* check to see if it was the last disk */ | |
1634 | if (drv == h->drv + h->highest_lun) { | |
1635 | /* if so, find the new hightest lun */ | |
1636 | int i, newhighest = -1; | |
1637 | for (i = 0; i < h->highest_lun; i++) { | |
1638 | /* if the disk has size > 0, it is available */ | |
ddd47442 | 1639 | if (h->drv[i].heads) |
7c832835 BH |
1640 | newhighest = i; |
1641 | } | |
1642 | h->highest_lun = newhighest; | |
1da177e4 | 1643 | } |
ddd47442 | 1644 | |
7c832835 | 1645 | drv->LunID = 0; |
ddd47442 | 1646 | } |
e2019b58 | 1647 | return 0; |
1da177e4 | 1648 | } |
ddd47442 | 1649 | |
7c832835 BH |
1650 | 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, |
1651 | 1: address logical volume log_unit, | |
1652 | 2: periph device address is scsi3addr */ | |
1653 | unsigned int log_unit, __u8 page_code, | |
1654 | unsigned char *scsi3addr, int cmd_type) | |
1da177e4 | 1655 | { |
7c832835 | 1656 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
1657 | u64bit buff_dma_handle; |
1658 | int status = IO_OK; | |
1659 | ||
1660 | c->cmd_type = CMD_IOCTL_PEND; | |
1661 | c->Header.ReplyQueue = 0; | |
7c832835 | 1662 | if (buff != NULL) { |
1da177e4 | 1663 | c->Header.SGList = 1; |
7c832835 | 1664 | c->Header.SGTotal = 1; |
1da177e4 LT |
1665 | } else { |
1666 | c->Header.SGList = 0; | |
7c832835 | 1667 | c->Header.SGTotal = 0; |
1da177e4 LT |
1668 | } |
1669 | c->Header.Tag.lower = c->busaddr; | |
1670 | ||
1671 | c->Request.Type.Type = cmd_type; | |
1672 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
1673 | switch (cmd) { |
1674 | case CISS_INQUIRY: | |
1da177e4 | 1675 | /* If the logical unit number is 0 then, this is going |
7c832835 BH |
1676 | to controller so It's a physical command |
1677 | mode = 0 target = 0. So we have nothing to write. | |
1678 | otherwise, if use_unit_num == 1, | |
1679 | mode = 1(volume set addressing) target = LUNID | |
1680 | otherwise, if use_unit_num == 2, | |
1681 | mode = 0(periph dev addr) target = scsi3addr */ | |
1da177e4 | 1682 | if (use_unit_num == 1) { |
7c832835 BH |
1683 | c->Header.LUN.LogDev.VolId = |
1684 | h->drv[log_unit].LunID; | |
1685 | c->Header.LUN.LogDev.Mode = 1; | |
1da177e4 | 1686 | } else if (use_unit_num == 2) { |
7c832835 BH |
1687 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, |
1688 | 8); | |
1da177e4 LT |
1689 | c->Header.LUN.LogDev.Mode = 0; |
1690 | } | |
1691 | /* are we trying to read a vital product page */ | |
7c832835 | 1692 | if (page_code != 0) { |
1da177e4 LT |
1693 | c->Request.CDB[1] = 0x01; |
1694 | c->Request.CDB[2] = page_code; | |
1695 | } | |
1696 | c->Request.CDBLen = 6; | |
7c832835 | 1697 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
1698 | c->Request.Type.Direction = XFER_READ; |
1699 | c->Request.Timeout = 0; | |
7c832835 BH |
1700 | c->Request.CDB[0] = CISS_INQUIRY; |
1701 | c->Request.CDB[4] = size & 0xFF; | |
1702 | break; | |
1da177e4 LT |
1703 | case CISS_REPORT_LOG: |
1704 | case CISS_REPORT_PHYS: | |
7c832835 | 1705 | /* Talking to controller so It's a physical command |
1da177e4 | 1706 | mode = 00 target = 0. Nothing to write. |
7c832835 | 1707 | */ |
1da177e4 LT |
1708 | c->Request.CDBLen = 12; |
1709 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1710 | c->Request.Type.Direction = XFER_READ; | |
1711 | c->Request.Timeout = 0; | |
1712 | c->Request.CDB[0] = cmd; | |
7c832835 | 1713 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
1da177e4 LT |
1714 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
1715 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
1716 | c->Request.CDB[9] = size & 0xFF; | |
1717 | break; | |
1718 | ||
1719 | case CCISS_READ_CAPACITY: | |
1720 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1721 | c->Header.LUN.LogDev.Mode = 1; | |
1722 | c->Request.CDBLen = 10; | |
1723 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1724 | c->Request.Type.Direction = XFER_READ; | |
1725 | c->Request.Timeout = 0; | |
1726 | c->Request.CDB[0] = cmd; | |
7c832835 | 1727 | break; |
00988a35 MMOD |
1728 | case CCISS_READ_CAPACITY_16: |
1729 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1730 | c->Header.LUN.LogDev.Mode = 1; | |
1731 | c->Request.CDBLen = 16; | |
1732 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1733 | c->Request.Type.Direction = XFER_READ; | |
1734 | c->Request.Timeout = 0; | |
1735 | c->Request.CDB[0] = cmd; | |
1736 | c->Request.CDB[1] = 0x10; | |
1737 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
1738 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
1739 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
1740 | c->Request.CDB[13] = size & 0xFF; | |
1741 | c->Request.Timeout = 0; | |
1742 | c->Request.CDB[0] = cmd; | |
1743 | break; | |
1da177e4 LT |
1744 | case CCISS_CACHE_FLUSH: |
1745 | c->Request.CDBLen = 12; | |
1746 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1747 | c->Request.Type.Direction = XFER_WRITE; | |
1748 | c->Request.Timeout = 0; | |
1749 | c->Request.CDB[0] = BMIC_WRITE; | |
1750 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 1751 | break; |
1da177e4 LT |
1752 | default: |
1753 | printk(KERN_WARNING | |
7c832835 | 1754 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 1755 | return IO_ERROR; |
1da177e4 LT |
1756 | } |
1757 | } else if (cmd_type == TYPE_MSG) { | |
1758 | switch (cmd) { | |
7c832835 | 1759 | case 0: /* ABORT message */ |
3da8b713 | 1760 | c->Request.CDBLen = 12; |
1761 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1762 | c->Request.Type.Direction = XFER_WRITE; | |
1763 | c->Request.Timeout = 0; | |
7c832835 BH |
1764 | c->Request.CDB[0] = cmd; /* abort */ |
1765 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 1766 | /* buff contains the tag of the command to abort */ |
1767 | memcpy(&c->Request.CDB[4], buff, 8); | |
1768 | break; | |
7c832835 | 1769 | case 1: /* RESET message */ |
3da8b713 | 1770 | c->Request.CDBLen = 12; |
1771 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1772 | c->Request.Type.Direction = XFER_WRITE; | |
1773 | c->Request.Timeout = 0; | |
1774 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 BH |
1775 | c->Request.CDB[0] = cmd; /* reset */ |
1776 | c->Request.CDB[1] = 0x04; /* reset a LUN */ | |
00988a35 | 1777 | break; |
1da177e4 LT |
1778 | case 3: /* No-Op message */ |
1779 | c->Request.CDBLen = 1; | |
1780 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1781 | c->Request.Type.Direction = XFER_WRITE; | |
1782 | c->Request.Timeout = 0; | |
1783 | c->Request.CDB[0] = cmd; | |
1784 | break; | |
1785 | default: | |
1786 | printk(KERN_WARNING | |
7c832835 | 1787 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
1788 | return IO_ERROR; |
1789 | } | |
1790 | } else { | |
1791 | printk(KERN_WARNING | |
7c832835 | 1792 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
1793 | return IO_ERROR; |
1794 | } | |
1795 | /* Fill in the scatter gather information */ | |
1796 | if (size > 0) { | |
1797 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
1798 | buff, size, |
1799 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
1800 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
1801 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
1802 | c->SG[0].Len = size; | |
7c832835 | 1803 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
1804 | } |
1805 | return status; | |
1806 | } | |
7c832835 BH |
1807 | |
1808 | static int sendcmd_withirq(__u8 cmd, | |
1809 | int ctlr, | |
1810 | void *buff, | |
1811 | size_t size, | |
1812 | unsigned int use_unit_num, | |
1813 | unsigned int log_unit, __u8 page_code, int cmd_type) | |
1da177e4 LT |
1814 | { |
1815 | ctlr_info_t *h = hba[ctlr]; | |
1816 | CommandList_struct *c; | |
7c832835 | 1817 | u64bit buff_dma_handle; |
1da177e4 LT |
1818 | unsigned long flags; |
1819 | int return_status; | |
6e9a4738 | 1820 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1821 | |
1822 | if ((c = cmd_alloc(h, 0)) == NULL) | |
1da177e4 LT |
1823 | return -ENOMEM; |
1824 | return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 1825 | log_unit, page_code, NULL, cmd_type); |
1da177e4 LT |
1826 | if (return_status != IO_OK) { |
1827 | cmd_free(h, c, 0); | |
1828 | return return_status; | |
1829 | } | |
7c832835 | 1830 | resend_cmd2: |
1da177e4 | 1831 | c->waiting = &wait; |
7c832835 | 1832 | |
1da177e4 LT |
1833 | /* Put the request on the tail of the queue and send it */ |
1834 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1835 | addQ(&h->reqQ, c); | |
1836 | h->Qdepth++; | |
1837 | start_io(h); | |
1838 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 1839 | |
1da177e4 LT |
1840 | wait_for_completion(&wait); |
1841 | ||
7c832835 BH |
1842 | if (c->err_info->CommandStatus != 0) { /* an error has occurred */ |
1843 | switch (c->err_info->CommandStatus) { | |
1844 | case CMD_TARGET_STATUS: | |
1845 | printk(KERN_WARNING "cciss: cmd %p has " | |
1846 | " completed with errors\n", c); | |
1847 | if (c->err_info->ScsiStatus) { | |
1848 | printk(KERN_WARNING "cciss: cmd %p " | |
1849 | "has SCSI Status = %x\n", | |
1850 | c, c->err_info->ScsiStatus); | |
1851 | } | |
1da177e4 LT |
1852 | |
1853 | break; | |
7c832835 BH |
1854 | case CMD_DATA_UNDERRUN: |
1855 | case CMD_DATA_OVERRUN: | |
1da177e4 LT |
1856 | /* expected for inquire and report lun commands */ |
1857 | break; | |
7c832835 BH |
1858 | case CMD_INVALID: |
1859 | printk(KERN_WARNING "cciss: Cmd %p is " | |
1860 | "reported invalid\n", c); | |
1861 | return_status = IO_ERROR; | |
1da177e4 | 1862 | break; |
7c832835 BH |
1863 | case CMD_PROTOCOL_ERR: |
1864 | printk(KERN_WARNING "cciss: cmd %p has " | |
1865 | "protocol error \n", c); | |
1866 | return_status = IO_ERROR; | |
1da177e4 | 1867 | break; |
7c832835 BH |
1868 | case CMD_HARDWARE_ERR: |
1869 | printk(KERN_WARNING "cciss: cmd %p had " | |
1870 | " hardware error\n", c); | |
1871 | return_status = IO_ERROR; | |
1da177e4 | 1872 | break; |
7c832835 BH |
1873 | case CMD_CONNECTION_LOST: |
1874 | printk(KERN_WARNING "cciss: cmd %p had " | |
1875 | "connection lost\n", c); | |
1876 | return_status = IO_ERROR; | |
1da177e4 | 1877 | break; |
7c832835 BH |
1878 | case CMD_ABORTED: |
1879 | printk(KERN_WARNING "cciss: cmd %p was " | |
1880 | "aborted\n", c); | |
1881 | return_status = IO_ERROR; | |
1da177e4 | 1882 | break; |
7c832835 BH |
1883 | case CMD_ABORT_FAILED: |
1884 | printk(KERN_WARNING "cciss: cmd %p reports " | |
1885 | "abort failed\n", c); | |
1886 | return_status = IO_ERROR; | |
1887 | break; | |
1888 | case CMD_UNSOLICITED_ABORT: | |
1889 | printk(KERN_WARNING | |
1890 | "cciss%d: unsolicited abort %p\n", ctlr, c); | |
1891 | if (c->retry_count < MAX_CMD_RETRIES) { | |
1892 | printk(KERN_WARNING | |
1893 | "cciss%d: retrying %p\n", ctlr, c); | |
1894 | c->retry_count++; | |
1895 | /* erase the old error information */ | |
1896 | memset(c->err_info, 0, | |
1897 | sizeof(ErrorInfo_struct)); | |
1898 | return_status = IO_OK; | |
1899 | INIT_COMPLETION(wait); | |
1900 | goto resend_cmd2; | |
1901 | } | |
1902 | return_status = IO_ERROR; | |
1903 | break; | |
1904 | default: | |
1905 | printk(KERN_WARNING "cciss: cmd %p returned " | |
1906 | "unknown status %x\n", c, | |
1907 | c->err_info->CommandStatus); | |
1908 | return_status = IO_ERROR; | |
1da177e4 | 1909 | } |
7c832835 | 1910 | } |
1da177e4 | 1911 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
1912 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
1913 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
1914 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
1915 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
1da177e4 | 1916 | cmd_free(h, c, 0); |
7c832835 | 1917 | return return_status; |
1da177e4 | 1918 | } |
7c832835 | 1919 | |
1da177e4 | 1920 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
00988a35 | 1921 | int withirq, sector_t total_size, |
7c832835 BH |
1922 | unsigned int block_size, |
1923 | InquiryData_struct *inq_buff, | |
1924 | drive_info_struct *drv) | |
1da177e4 LT |
1925 | { |
1926 | int return_code; | |
00988a35 | 1927 | unsigned long t; |
00988a35 | 1928 | |
1da177e4 LT |
1929 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
1930 | if (withirq) | |
1931 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, | |
7c832835 BH |
1932 | inq_buff, sizeof(*inq_buff), 1, |
1933 | logvol, 0xC1, TYPE_CMD); | |
1da177e4 LT |
1934 | else |
1935 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, | |
7c832835 BH |
1936 | sizeof(*inq_buff), 1, logvol, 0xC1, NULL, |
1937 | TYPE_CMD); | |
1da177e4 | 1938 | if (return_code == IO_OK) { |
7c832835 | 1939 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 1940 | printk(KERN_WARNING |
7c832835 BH |
1941 | "cciss: reading geometry failed, volume " |
1942 | "does not support reading geometry\n"); | |
1da177e4 | 1943 | drv->heads = 255; |
7c832835 | 1944 | drv->sectors = 32; // Sectors per track |
7f42d3b8 | 1945 | drv->cylinders = total_size + 1; |
89f97ad1 | 1946 | drv->raid_level = RAID_UNKNOWN; |
1da177e4 | 1947 | } else { |
1da177e4 LT |
1948 | drv->heads = inq_buff->data_byte[6]; |
1949 | drv->sectors = inq_buff->data_byte[7]; | |
1950 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
1951 | drv->cylinders += inq_buff->data_byte[5]; | |
1952 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
1953 | } |
1954 | drv->block_size = block_size; | |
97c06978 | 1955 | drv->nr_blocks = total_size + 1; |
3f7705ea MW |
1956 | t = drv->heads * drv->sectors; |
1957 | if (t > 1) { | |
97c06978 MMOD |
1958 | sector_t real_size = total_size + 1; |
1959 | unsigned long rem = sector_div(real_size, t); | |
3f7705ea | 1960 | if (rem) |
97c06978 MMOD |
1961 | real_size++; |
1962 | drv->cylinders = real_size; | |
1da177e4 | 1963 | } |
7c832835 | 1964 | } else { /* Get geometry failed */ |
1da177e4 LT |
1965 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
1966 | } | |
cc088d10 | 1967 | printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n", |
7c832835 | 1968 | drv->heads, drv->sectors, drv->cylinders); |
1da177e4 | 1969 | } |
7c832835 | 1970 | |
1da177e4 | 1971 | static void |
00988a35 | 1972 | cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size, |
7c832835 | 1973 | unsigned int *block_size) |
1da177e4 | 1974 | { |
00988a35 | 1975 | ReadCapdata_struct *buf; |
1da177e4 | 1976 | int return_code; |
1aebe187 MK |
1977 | |
1978 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); | |
1979 | if (!buf) { | |
00988a35 MMOD |
1980 | printk(KERN_WARNING "cciss: out of memory\n"); |
1981 | return; | |
1982 | } | |
1aebe187 | 1983 | |
1da177e4 LT |
1984 | if (withirq) |
1985 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
1986 | ctlr, buf, sizeof(ReadCapdata_struct), |
1987 | 1, logvol, 0, TYPE_CMD); | |
1da177e4 LT |
1988 | else |
1989 | return_code = sendcmd(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
1990 | ctlr, buf, sizeof(ReadCapdata_struct), |
1991 | 1, logvol, 0, NULL, TYPE_CMD); | |
1da177e4 | 1992 | if (return_code == IO_OK) { |
4c1f2b31 AV |
1993 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
1994 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
7c832835 | 1995 | } else { /* read capacity command failed */ |
1da177e4 LT |
1996 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
1997 | *total_size = 0; | |
1998 | *block_size = BLOCK_SIZE; | |
1999 | } | |
97c06978 | 2000 | if (*total_size != 0) |
7b92aadf | 2001 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2002 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2003 | kfree(buf); |
00988a35 MMOD |
2004 | } |
2005 | ||
2006 | static void | |
2007 | cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) | |
2008 | { | |
2009 | ReadCapdata_struct_16 *buf; | |
2010 | int return_code; | |
1aebe187 MK |
2011 | |
2012 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2013 | if (!buf) { | |
00988a35 MMOD |
2014 | printk(KERN_WARNING "cciss: out of memory\n"); |
2015 | return; | |
2016 | } | |
1aebe187 | 2017 | |
00988a35 MMOD |
2018 | if (withirq) { |
2019 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, | |
2020 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2021 | 1, logvol, 0, TYPE_CMD); | |
2022 | } | |
2023 | else { | |
2024 | return_code = sendcmd(CCISS_READ_CAPACITY_16, | |
2025 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2026 | 1, logvol, 0, NULL, TYPE_CMD); | |
2027 | } | |
2028 | if (return_code == IO_OK) { | |
4c1f2b31 AV |
2029 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
2030 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
00988a35 MMOD |
2031 | } else { /* read capacity command failed */ |
2032 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
2033 | *total_size = 0; | |
2034 | *block_size = BLOCK_SIZE; | |
2035 | } | |
7b92aadf | 2036 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2037 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2038 | kfree(buf); |
1da177e4 LT |
2039 | } |
2040 | ||
1da177e4 LT |
2041 | static int cciss_revalidate(struct gendisk *disk) |
2042 | { | |
2043 | ctlr_info_t *h = get_host(disk); | |
2044 | drive_info_struct *drv = get_drv(disk); | |
2045 | int logvol; | |
7c832835 | 2046 | int FOUND = 0; |
1da177e4 | 2047 | unsigned int block_size; |
00988a35 | 2048 | sector_t total_size; |
1da177e4 LT |
2049 | InquiryData_struct *inq_buff = NULL; |
2050 | ||
7c832835 BH |
2051 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
2052 | if (h->drv[logvol].LunID == drv->LunID) { | |
2053 | FOUND = 1; | |
1da177e4 LT |
2054 | break; |
2055 | } | |
2056 | } | |
2057 | ||
7c832835 BH |
2058 | if (!FOUND) |
2059 | return 1; | |
1da177e4 | 2060 | |
7c832835 BH |
2061 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2062 | if (inq_buff == NULL) { | |
2063 | printk(KERN_WARNING "cciss: out of memory\n"); | |
7c832835 BH |
2064 | return 1; |
2065 | } | |
00988a35 MMOD |
2066 | if (h->cciss_read == CCISS_READ_10) { |
2067 | cciss_read_capacity(h->ctlr, logvol, 1, | |
2068 | &total_size, &block_size); | |
2069 | } else { | |
2070 | cciss_read_capacity_16(h->ctlr, logvol, 1, | |
2071 | &total_size, &block_size); | |
2072 | } | |
7c832835 BH |
2073 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, |
2074 | inq_buff, drv); | |
1da177e4 | 2075 | |
ad2b9312 | 2076 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
1da177e4 LT |
2077 | set_capacity(disk, drv->nr_blocks); |
2078 | ||
1da177e4 LT |
2079 | kfree(inq_buff); |
2080 | return 0; | |
2081 | } | |
2082 | ||
2083 | /* | |
2084 | * Wait polling for a command to complete. | |
2085 | * The memory mapped FIFO is polled for the completion. | |
2086 | * Used only at init time, interrupts from the HBA are disabled. | |
2087 | */ | |
2088 | static unsigned long pollcomplete(int ctlr) | |
2089 | { | |
2090 | unsigned long done; | |
2091 | int i; | |
2092 | ||
2093 | /* Wait (up to 20 seconds) for a command to complete */ | |
2094 | ||
2095 | for (i = 20 * HZ; i > 0; i--) { | |
2096 | done = hba[ctlr]->access.command_completed(hba[ctlr]); | |
86e84862 NA |
2097 | if (done == FIFO_EMPTY) |
2098 | schedule_timeout_uninterruptible(1); | |
2099 | else | |
e2019b58 | 2100 | return done; |
1da177e4 LT |
2101 | } |
2102 | /* Invalid address to tell caller we ran out of time */ | |
2103 | return 1; | |
2104 | } | |
3da8b713 | 2105 | |
2106 | static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) | |
2107 | { | |
2108 | /* We get in here if sendcmd() is polling for completions | |
7c832835 BH |
2109 | and gets some command back that it wasn't expecting -- |
2110 | something other than that which it just sent down. | |
2111 | Ordinarily, that shouldn't happen, but it can happen when | |
3da8b713 | 2112 | the scsi tape stuff gets into error handling mode, and |
7c832835 | 2113 | starts using sendcmd() to try to abort commands and |
3da8b713 | 2114 | reset tape drives. In that case, sendcmd may pick up |
2115 | completions of commands that were sent to logical drives | |
7c832835 | 2116 | through the block i/o system, or cciss ioctls completing, etc. |
3da8b713 | 2117 | In that case, we need to save those completions for later |
2118 | processing by the interrupt handler. | |
7c832835 | 2119 | */ |
3da8b713 | 2120 | |
2121 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2122 | struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects; |
3da8b713 | 2123 | |
2124 | /* If it's not the scsi tape stuff doing error handling, (abort */ | |
2125 | /* or reset) then we don't expect anything weird. */ | |
2126 | if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) { | |
2127 | #endif | |
7c832835 BH |
2128 | printk(KERN_WARNING "cciss cciss%d: SendCmd " |
2129 | "Invalid command list address returned! (%lx)\n", | |
2130 | ctlr, complete); | |
3da8b713 | 2131 | /* not much we can do. */ |
2132 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2133 | return 1; | |
2134 | } | |
2135 | ||
2136 | /* We've sent down an abort or reset, but something else | |
2137 | has completed */ | |
f880632f | 2138 | if (srl->ncompletions >= (hba[ctlr]->nr_cmds + 2)) { |
3da8b713 | 2139 | /* Uh oh. No room to save it for later... */ |
2140 | printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, " | |
7c832835 | 2141 | "reject list overflow, command lost!\n", ctlr); |
3da8b713 | 2142 | return 1; |
2143 | } | |
2144 | /* Save it for later */ | |
2145 | srl->complete[srl->ncompletions] = complete; | |
2146 | srl->ncompletions++; | |
2147 | #endif | |
2148 | return 0; | |
2149 | } | |
2150 | ||
1da177e4 | 2151 | /* |
7c832835 BH |
2152 | * Send a command to the controller, and wait for it to complete. |
2153 | * Only used at init time. | |
1da177e4 | 2154 | */ |
7c832835 BH |
2155 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, |
2156 | 1: address logical volume log_unit, | |
2157 | 2: periph device address is scsi3addr */ | |
2158 | unsigned int log_unit, | |
2159 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) | |
1da177e4 LT |
2160 | { |
2161 | CommandList_struct *c; | |
2162 | int i; | |
2163 | unsigned long complete; | |
7c832835 | 2164 | ctlr_info_t *info_p = hba[ctlr]; |
1da177e4 | 2165 | u64bit buff_dma_handle; |
3da8b713 | 2166 | int status, done = 0; |
1da177e4 LT |
2167 | |
2168 | if ((c = cmd_alloc(info_p, 1)) == NULL) { | |
2169 | printk(KERN_WARNING "cciss: unable to get memory"); | |
e2019b58 | 2170 | return IO_ERROR; |
1da177e4 LT |
2171 | } |
2172 | status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 2173 | log_unit, page_code, scsi3addr, cmd_type); |
1da177e4 LT |
2174 | if (status != IO_OK) { |
2175 | cmd_free(info_p, c, 1); | |
2176 | return status; | |
2177 | } | |
7c832835 | 2178 | resend_cmd1: |
1da177e4 | 2179 | /* |
7c832835 BH |
2180 | * Disable interrupt |
2181 | */ | |
1da177e4 LT |
2182 | #ifdef CCISS_DEBUG |
2183 | printk(KERN_DEBUG "cciss: turning intr off\n"); | |
7c832835 BH |
2184 | #endif /* CCISS_DEBUG */ |
2185 | info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF); | |
2186 | ||
1da177e4 | 2187 | /* Make sure there is room in the command FIFO */ |
7c832835 | 2188 | /* Actually it should be completely empty at this time */ |
3da8b713 | 2189 | /* unless we are in here doing error handling for the scsi */ |
2190 | /* tape side of the driver. */ | |
7c832835 | 2191 | for (i = 200000; i > 0; i--) { |
1da177e4 | 2192 | /* if fifo isn't full go */ |
7c832835 BH |
2193 | if (!(info_p->access.fifo_full(info_p))) { |
2194 | ||
2195 | break; | |
2196 | } | |
2197 | udelay(10); | |
2198 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," | |
2199 | " waiting!\n", ctlr); | |
2200 | } | |
2201 | /* | |
2202 | * Send the cmd | |
2203 | */ | |
2204 | info_p->access.submit_command(info_p, c); | |
3da8b713 | 2205 | done = 0; |
2206 | do { | |
2207 | complete = pollcomplete(ctlr); | |
1da177e4 LT |
2208 | |
2209 | #ifdef CCISS_DEBUG | |
3da8b713 | 2210 | printk(KERN_DEBUG "cciss: command completed\n"); |
7c832835 | 2211 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2212 | |
3da8b713 | 2213 | if (complete == 1) { |
7c832835 BH |
2214 | printk(KERN_WARNING |
2215 | "cciss cciss%d: SendCmd Timeout out, " | |
2216 | "No command list address returned!\n", ctlr); | |
3da8b713 | 2217 | status = IO_ERROR; |
2218 | done = 1; | |
2219 | break; | |
2220 | } | |
2221 | ||
2222 | /* This will need to change for direct lookup completions */ | |
7c832835 BH |
2223 | if ((complete & CISS_ERROR_BIT) |
2224 | && (complete & ~CISS_ERROR_BIT) == c->busaddr) { | |
2225 | /* if data overrun or underun on Report command | |
2226 | ignore it | |
2227 | */ | |
1da177e4 LT |
2228 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || |
2229 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || | |
2230 | (c->Request.CDB[0] == CISS_INQUIRY)) && | |
7c832835 BH |
2231 | ((c->err_info->CommandStatus == |
2232 | CMD_DATA_OVERRUN) || | |
2233 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN) | |
2234 | )) { | |
1da177e4 LT |
2235 | complete = c->busaddr; |
2236 | } else { | |
2237 | if (c->err_info->CommandStatus == | |
7c832835 | 2238 | CMD_UNSOLICITED_ABORT) { |
1da177e4 | 2239 | printk(KERN_WARNING "cciss%d: " |
7c832835 BH |
2240 | "unsolicited abort %p\n", |
2241 | ctlr, c); | |
1da177e4 LT |
2242 | if (c->retry_count < MAX_CMD_RETRIES) { |
2243 | printk(KERN_WARNING | |
7c832835 BH |
2244 | "cciss%d: retrying %p\n", |
2245 | ctlr, c); | |
1da177e4 LT |
2246 | c->retry_count++; |
2247 | /* erase the old error */ | |
2248 | /* information */ | |
2249 | memset(c->err_info, 0, | |
7c832835 BH |
2250 | sizeof |
2251 | (ErrorInfo_struct)); | |
1da177e4 LT |
2252 | goto resend_cmd1; |
2253 | } else { | |
2254 | printk(KERN_WARNING | |
7c832835 BH |
2255 | "cciss%d: retried %p too " |
2256 | "many times\n", ctlr, c); | |
1da177e4 LT |
2257 | status = IO_ERROR; |
2258 | goto cleanup1; | |
2259 | } | |
7c832835 BH |
2260 | } else if (c->err_info->CommandStatus == |
2261 | CMD_UNABORTABLE) { | |
2262 | printk(KERN_WARNING | |
2263 | "cciss%d: command could not be aborted.\n", | |
2264 | ctlr); | |
3da8b713 | 2265 | status = IO_ERROR; |
2266 | goto cleanup1; | |
1da177e4 LT |
2267 | } |
2268 | printk(KERN_WARNING "ciss ciss%d: sendcmd" | |
7c832835 BH |
2269 | " Error %x \n", ctlr, |
2270 | c->err_info->CommandStatus); | |
1da177e4 | 2271 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
7c832835 BH |
2272 | " offensive info\n" |
2273 | " size %x\n num %x value %x\n", | |
2274 | ctlr, | |
2275 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2276 | offense_size, | |
2277 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2278 | offense_num, | |
2279 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2280 | offense_value); | |
1da177e4 LT |
2281 | status = IO_ERROR; |
2282 | goto cleanup1; | |
2283 | } | |
2284 | } | |
3da8b713 | 2285 | /* This will need changing for direct lookup completions */ |
7c832835 | 2286 | if (complete != c->busaddr) { |
3da8b713 | 2287 | if (add_sendcmd_reject(cmd, ctlr, complete) != 0) { |
7c832835 | 2288 | BUG(); /* we are pretty much hosed if we get here. */ |
3da8b713 | 2289 | } |
2290 | continue; | |
7c832835 | 2291 | } else |
3da8b713 | 2292 | done = 1; |
7c832835 BH |
2293 | } while (!done); |
2294 | ||
2295 | cleanup1: | |
1da177e4 | 2296 | /* unlock the data buffer from DMA */ |
bb2a37bf MM |
2297 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2298 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
1da177e4 | 2299 | pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val, |
7c832835 | 2300 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
3da8b713 | 2301 | #ifdef CONFIG_CISS_SCSI_TAPE |
2302 | /* if we saved some commands for later, process them now. */ | |
2303 | if (info_p->scsi_rejects.ncompletions > 0) | |
7d12e780 | 2304 | do_cciss_intr(0, info_p); |
3da8b713 | 2305 | #endif |
1da177e4 | 2306 | cmd_free(info_p, c, 1); |
e2019b58 | 2307 | return status; |
7c832835 BH |
2308 | } |
2309 | ||
1da177e4 LT |
2310 | /* |
2311 | * Map (physical) PCI mem into (virtual) kernel space | |
2312 | */ | |
2313 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2314 | { | |
7c832835 BH |
2315 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2316 | ulong page_offs = ((ulong) base) - page_base; | |
2317 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2318 | |
7c832835 | 2319 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2320 | } |
2321 | ||
7c832835 BH |
2322 | /* |
2323 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2324 | * the Q to wait for completion. | |
2325 | */ | |
2326 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
2327 | { |
2328 | CommandList_struct *c; | |
7c832835 BH |
2329 | |
2330 | while ((c = h->reqQ) != NULL) { | |
1da177e4 LT |
2331 | /* can't do anything if fifo is full */ |
2332 | if ((h->access.fifo_full(h))) { | |
2333 | printk(KERN_WARNING "cciss: fifo full\n"); | |
2334 | break; | |
2335 | } | |
2336 | ||
7c832835 | 2337 | /* Get the first entry from the Request Q */ |
1da177e4 LT |
2338 | removeQ(&(h->reqQ), c); |
2339 | h->Qdepth--; | |
7c832835 BH |
2340 | |
2341 | /* Tell the controller execute command */ | |
1da177e4 | 2342 | h->access.submit_command(h, c); |
7c832835 BH |
2343 | |
2344 | /* Put job onto the completed Q */ | |
2345 | addQ(&(h->cmpQ), c); | |
1da177e4 LT |
2346 | } |
2347 | } | |
7c832835 | 2348 | |
1da177e4 LT |
2349 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
2350 | /* Zeros out the error record and then resends the command back */ | |
2351 | /* to the controller */ | |
7c832835 | 2352 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
2353 | { |
2354 | /* erase the old error information */ | |
2355 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2356 | ||
2357 | /* add it to software queue and then send it to the controller */ | |
7c832835 | 2358 | addQ(&(h->reqQ), c); |
1da177e4 | 2359 | h->Qdepth++; |
7c832835 | 2360 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
2361 | h->maxQsinceinit = h->Qdepth; |
2362 | ||
2363 | start_io(h); | |
2364 | } | |
a9925a06 | 2365 | |
1a614f50 SC |
2366 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
2367 | unsigned int msg_byte, unsigned int host_byte, | |
2368 | unsigned int driver_byte) | |
2369 | { | |
2370 | /* inverse of macros in scsi.h */ | |
2371 | return (scsi_status_byte & 0xff) | | |
2372 | ((msg_byte & 0xff) << 8) | | |
2373 | ((host_byte & 0xff) << 16) | | |
2374 | ((driver_byte & 0xff) << 24); | |
2375 | } | |
2376 | ||
03bbfee5 MMOD |
2377 | static inline int evaluate_target_status(CommandList_struct *cmd) |
2378 | { | |
2379 | unsigned char sense_key; | |
1a614f50 SC |
2380 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
2381 | int error_value; | |
2382 | ||
2383 | /* If we get in here, it means we got "target status", that is, scsi status */ | |
2384 | status_byte = cmd->err_info->ScsiStatus; | |
2385 | driver_byte = DRIVER_OK; | |
2386 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ | |
2387 | ||
2388 | if (blk_pc_request(cmd->rq)) | |
2389 | host_byte = DID_PASSTHROUGH; | |
2390 | else | |
2391 | host_byte = DID_OK; | |
2392 | ||
2393 | error_value = make_status_bytes(status_byte, msg_byte, | |
2394 | host_byte, driver_byte); | |
03bbfee5 | 2395 | |
1a614f50 | 2396 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
03bbfee5 MMOD |
2397 | if (!blk_pc_request(cmd->rq)) |
2398 | printk(KERN_WARNING "cciss: cmd %p " | |
2399 | "has SCSI Status 0x%x\n", | |
2400 | cmd, cmd->err_info->ScsiStatus); | |
1a614f50 | 2401 | return error_value; |
03bbfee5 MMOD |
2402 | } |
2403 | ||
2404 | /* check the sense key */ | |
2405 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
2406 | /* no status or recovered error */ | |
1a614f50 SC |
2407 | if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq)) |
2408 | error_value = 0; | |
03bbfee5 MMOD |
2409 | |
2410 | if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */ | |
1a614f50 | 2411 | if (error_value != 0) |
03bbfee5 MMOD |
2412 | printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" |
2413 | " sense key = 0x%x\n", cmd, sense_key); | |
1a614f50 | 2414 | return error_value; |
03bbfee5 MMOD |
2415 | } |
2416 | ||
2417 | /* SG_IO or similar, copy sense data back */ | |
2418 | if (cmd->rq->sense) { | |
2419 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) | |
2420 | cmd->rq->sense_len = cmd->err_info->SenseLen; | |
2421 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, | |
2422 | cmd->rq->sense_len); | |
2423 | } else | |
2424 | cmd->rq->sense_len = 0; | |
2425 | ||
1a614f50 | 2426 | return error_value; |
03bbfee5 MMOD |
2427 | } |
2428 | ||
7c832835 | 2429 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
2430 | * buffers for the completed job. Note that this function does not need |
2431 | * to hold the hba/queue lock. | |
7c832835 BH |
2432 | */ |
2433 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
2434 | int timeout) | |
1da177e4 | 2435 | { |
1da177e4 | 2436 | int retry_cmd = 0; |
198b7660 MMOD |
2437 | struct request *rq = cmd->rq; |
2438 | ||
2439 | rq->errors = 0; | |
7c832835 | 2440 | |
1da177e4 | 2441 | if (timeout) |
1a614f50 | 2442 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
1da177e4 | 2443 | |
d38ae168 MMOD |
2444 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
2445 | goto after_error_processing; | |
7c832835 | 2446 | |
d38ae168 | 2447 | switch (cmd->err_info->CommandStatus) { |
d38ae168 | 2448 | case CMD_TARGET_STATUS: |
198b7660 | 2449 | rq->errors = evaluate_target_status(cmd); |
d38ae168 MMOD |
2450 | break; |
2451 | case CMD_DATA_UNDERRUN: | |
03bbfee5 MMOD |
2452 | if (blk_fs_request(cmd->rq)) { |
2453 | printk(KERN_WARNING "cciss: cmd %p has" | |
2454 | " completed with data underrun " | |
2455 | "reported\n", cmd); | |
2456 | cmd->rq->data_len = cmd->err_info->ResidualCnt; | |
2457 | } | |
d38ae168 MMOD |
2458 | break; |
2459 | case CMD_DATA_OVERRUN: | |
03bbfee5 MMOD |
2460 | if (blk_fs_request(cmd->rq)) |
2461 | printk(KERN_WARNING "cciss: cmd %p has" | |
2462 | " completed with data overrun " | |
2463 | "reported\n", cmd); | |
d38ae168 MMOD |
2464 | break; |
2465 | case CMD_INVALID: | |
2466 | printk(KERN_WARNING "cciss: cmd %p is " | |
2467 | "reported invalid\n", cmd); | |
1a614f50 SC |
2468 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2469 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2470 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2471 | break; |
2472 | case CMD_PROTOCOL_ERR: | |
2473 | printk(KERN_WARNING "cciss: cmd %p has " | |
2474 | "protocol error \n", cmd); | |
1a614f50 SC |
2475 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2476 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2477 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2478 | break; |
2479 | case CMD_HARDWARE_ERR: | |
2480 | printk(KERN_WARNING "cciss: cmd %p had " | |
2481 | " hardware error\n", cmd); | |
1a614f50 SC |
2482 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2483 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2484 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2485 | break; |
2486 | case CMD_CONNECTION_LOST: | |
2487 | printk(KERN_WARNING "cciss: cmd %p had " | |
2488 | "connection lost\n", cmd); | |
1a614f50 SC |
2489 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2490 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2491 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2492 | break; |
2493 | case CMD_ABORTED: | |
2494 | printk(KERN_WARNING "cciss: cmd %p was " | |
2495 | "aborted\n", cmd); | |
1a614f50 SC |
2496 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2497 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2498 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
2499 | break; |
2500 | case CMD_ABORT_FAILED: | |
2501 | printk(KERN_WARNING "cciss: cmd %p reports " | |
2502 | "abort failed\n", cmd); | |
1a614f50 SC |
2503 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2504 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2505 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2506 | break; |
2507 | case CMD_UNSOLICITED_ABORT: | |
2508 | printk(KERN_WARNING "cciss%d: unsolicited " | |
2509 | "abort %p\n", h->ctlr, cmd); | |
2510 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
2511 | retry_cmd = 1; | |
2512 | printk(KERN_WARNING | |
2513 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
2514 | cmd->retry_count++; | |
2515 | } else | |
2516 | printk(KERN_WARNING | |
2517 | "cciss%d: %p retried too " | |
2518 | "many times\n", h->ctlr, cmd); | |
1a614f50 SC |
2519 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2520 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2521 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
2522 | break; |
2523 | case CMD_TIMEOUT: | |
2524 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
1a614f50 SC |
2525 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2526 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2527 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2528 | break; |
2529 | default: | |
2530 | printk(KERN_WARNING "cciss: cmd %p returned " | |
2531 | "unknown status %x\n", cmd, | |
2532 | cmd->err_info->CommandStatus); | |
1a614f50 SC |
2533 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2534 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2535 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
1da177e4 | 2536 | } |
d38ae168 MMOD |
2537 | |
2538 | after_error_processing: | |
2539 | ||
1da177e4 | 2540 | /* We need to return this command */ |
7c832835 BH |
2541 | if (retry_cmd) { |
2542 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 2543 | return; |
7c832835 | 2544 | } |
03bbfee5 | 2545 | cmd->rq->data_len = 0; |
03bbfee5 | 2546 | cmd->rq->completion_data = cmd; |
2056a782 | 2547 | blk_add_trace_rq(cmd->rq->q, cmd->rq, BLK_TA_COMPLETE); |
a9925a06 | 2548 | blk_complete_request(cmd->rq); |
1da177e4 LT |
2549 | } |
2550 | ||
7c832835 BH |
2551 | /* |
2552 | * Get a request and submit it to the controller. | |
1da177e4 | 2553 | */ |
165125e1 | 2554 | static void do_cciss_request(struct request_queue *q) |
1da177e4 | 2555 | { |
7c832835 | 2556 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 2557 | CommandList_struct *c; |
00988a35 MMOD |
2558 | sector_t start_blk; |
2559 | int seg; | |
1da177e4 LT |
2560 | struct request *creq; |
2561 | u64bit temp64; | |
2562 | struct scatterlist tmp_sg[MAXSGENTRIES]; | |
2563 | drive_info_struct *drv; | |
2564 | int i, dir; | |
2565 | ||
2566 | /* We call start_io here in case there is a command waiting on the | |
2567 | * queue that has not been sent. | |
7c832835 | 2568 | */ |
1da177e4 LT |
2569 | if (blk_queue_plugged(q)) |
2570 | goto startio; | |
2571 | ||
7c832835 | 2572 | queue: |
1da177e4 LT |
2573 | creq = elv_next_request(q); |
2574 | if (!creq) | |
2575 | goto startio; | |
2576 | ||
089fe1b2 | 2577 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
1da177e4 | 2578 | |
7c832835 | 2579 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
2580 | goto full; |
2581 | ||
2582 | blkdev_dequeue_request(creq); | |
2583 | ||
2584 | spin_unlock_irq(q->queue_lock); | |
2585 | ||
2586 | c->cmd_type = CMD_RWREQ; | |
2587 | c->rq = creq; | |
7c832835 BH |
2588 | |
2589 | /* fill in the request */ | |
1da177e4 | 2590 | drv = creq->rq_disk->private_data; |
7c832835 | 2591 | c->Header.ReplyQueue = 0; // unused in simple mode |
33079b21 MM |
2592 | /* got command from pool, so use the command block index instead */ |
2593 | /* for direct lookups. */ | |
2594 | /* The first 2 bits are reserved for controller error reporting. */ | |
2595 | c->Header.Tag.lower = (c->cmdindex << 3); | |
7c832835 BH |
2596 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
2597 | c->Header.LUN.LogDev.VolId = drv->LunID; | |
1da177e4 | 2598 | c->Header.LUN.LogDev.Mode = 1; |
7c832835 BH |
2599 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
2600 | c->Request.Type.Type = TYPE_CMD; // It is a command. | |
2601 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2602 | c->Request.Type.Direction = | |
a52de245 | 2603 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
7c832835 BH |
2604 | c->Request.Timeout = 0; // Don't time out |
2605 | c->Request.CDB[0] = | |
00988a35 | 2606 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
1da177e4 LT |
2607 | start_blk = creq->sector; |
2608 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2609 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", (int)creq->sector, |
2610 | (int)creq->nr_sectors); | |
2611 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 2612 | |
a683d652 | 2613 | memset(tmp_sg, 0, sizeof(tmp_sg)); |
1da177e4 LT |
2614 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
2615 | ||
7c832835 | 2616 | /* get the DMA records for the setup */ |
1da177e4 LT |
2617 | if (c->Request.Type.Direction == XFER_READ) |
2618 | dir = PCI_DMA_FROMDEVICE; | |
2619 | else | |
2620 | dir = PCI_DMA_TODEVICE; | |
2621 | ||
7c832835 | 2622 | for (i = 0; i < seg; i++) { |
1da177e4 LT |
2623 | c->SG[i].Len = tmp_sg[i].length; |
2624 | temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page, | |
7c832835 BH |
2625 | tmp_sg[i].offset, |
2626 | tmp_sg[i].length, dir); | |
1da177e4 | 2627 | c->SG[i].Addr.lower = temp64.val32.lower; |
7c832835 BH |
2628 | c->SG[i].Addr.upper = temp64.val32.upper; |
2629 | c->SG[i].Ext = 0; // we are not chaining | |
1da177e4 | 2630 | } |
7c832835 BH |
2631 | /* track how many SG entries we are using */ |
2632 | if (seg > h->maxSG) | |
2633 | h->maxSG = seg; | |
1da177e4 LT |
2634 | |
2635 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2636 | printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", |
2637 | creq->nr_sectors, seg); | |
2638 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
2639 | |
2640 | c->Header.SGList = c->Header.SGTotal = seg; | |
03bbfee5 MMOD |
2641 | if (likely(blk_fs_request(creq))) { |
2642 | if(h->cciss_read == CCISS_READ_10) { | |
2643 | c->Request.CDB[1] = 0; | |
2644 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB | |
2645 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; | |
2646 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
2647 | c->Request.CDB[5] = start_blk & 0xff; | |
2648 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB | |
2649 | c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff; | |
2650 | c->Request.CDB[8] = creq->nr_sectors & 0xff; | |
2651 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; | |
2652 | } else { | |
2653 | c->Request.CDBLen = 16; | |
2654 | c->Request.CDB[1]= 0; | |
2655 | c->Request.CDB[2]= (start_blk >> 56) & 0xff; //MSB | |
2656 | c->Request.CDB[3]= (start_blk >> 48) & 0xff; | |
2657 | c->Request.CDB[4]= (start_blk >> 40) & 0xff; | |
2658 | c->Request.CDB[5]= (start_blk >> 32) & 0xff; | |
2659 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; | |
2660 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
2661 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
2662 | c->Request.CDB[9]= start_blk & 0xff; | |
2663 | c->Request.CDB[10]= (creq->nr_sectors >> 24) & 0xff; | |
2664 | c->Request.CDB[11]= (creq->nr_sectors >> 16) & 0xff; | |
2665 | c->Request.CDB[12]= (creq->nr_sectors >> 8) & 0xff; | |
2666 | c->Request.CDB[13]= creq->nr_sectors & 0xff; | |
2667 | c->Request.CDB[14] = c->Request.CDB[15] = 0; | |
2668 | } | |
2669 | } else if (blk_pc_request(creq)) { | |
2670 | c->Request.CDBLen = creq->cmd_len; | |
2671 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); | |
00988a35 | 2672 | } else { |
03bbfee5 MMOD |
2673 | printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); |
2674 | BUG(); | |
00988a35 | 2675 | } |
1da177e4 LT |
2676 | |
2677 | spin_lock_irq(q->queue_lock); | |
2678 | ||
7c832835 | 2679 | addQ(&(h->reqQ), c); |
1da177e4 | 2680 | h->Qdepth++; |
7c832835 BH |
2681 | if (h->Qdepth > h->maxQsinceinit) |
2682 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
2683 | |
2684 | goto queue; | |
00988a35 | 2685 | full: |
1da177e4 | 2686 | blk_stop_queue(q); |
00988a35 | 2687 | startio: |
1da177e4 LT |
2688 | /* We will already have the driver lock here so not need |
2689 | * to lock it. | |
7c832835 | 2690 | */ |
1da177e4 LT |
2691 | start_io(h); |
2692 | } | |
2693 | ||
3da8b713 | 2694 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
2695 | { | |
2696 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2697 | /* Any rejects from sendcmd() lying around? Process them first */ | |
2698 | if (h->scsi_rejects.ncompletions == 0) | |
2699 | return h->access.command_completed(h); | |
2700 | else { | |
2701 | struct sendcmd_reject_list *srl; | |
2702 | int n; | |
2703 | srl = &h->scsi_rejects; | |
2704 | n = --srl->ncompletions; | |
2705 | /* printk("cciss%d: processing saved reject\n", h->ctlr); */ | |
2706 | printk("p"); | |
2707 | return srl->complete[n]; | |
2708 | } | |
2709 | #else | |
2710 | return h->access.command_completed(h); | |
2711 | #endif | |
2712 | } | |
2713 | ||
2714 | static inline int interrupt_pending(ctlr_info_t *h) | |
2715 | { | |
2716 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2717 | return (h->access.intr_pending(h) |
3da8b713 | 2718 | || (h->scsi_rejects.ncompletions > 0)); |
2719 | #else | |
2720 | return h->access.intr_pending(h); | |
2721 | #endif | |
2722 | } | |
2723 | ||
2724 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
2725 | { | |
2726 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
2727 | return (((h->access.intr_pending(h) == 0) || |
2728 | (h->interrupts_enabled == 0)) | |
2729 | && (h->scsi_rejects.ncompletions == 0)); | |
3da8b713 | 2730 | #else |
7c832835 | 2731 | return (((h->access.intr_pending(h) == 0) || |
3da8b713 | 2732 | (h->interrupts_enabled == 0))); |
2733 | #endif | |
2734 | } | |
2735 | ||
7d12e780 | 2736 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
1da177e4 LT |
2737 | { |
2738 | ctlr_info_t *h = dev_id; | |
2739 | CommandList_struct *c; | |
2740 | unsigned long flags; | |
33079b21 | 2741 | __u32 a, a1, a2; |
1da177e4 | 2742 | |
3da8b713 | 2743 | if (interrupt_not_for_us(h)) |
1da177e4 | 2744 | return IRQ_NONE; |
1da177e4 LT |
2745 | /* |
2746 | * If there are completed commands in the completion queue, | |
2747 | * we had better do something about it. | |
2748 | */ | |
2749 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 2750 | while (interrupt_pending(h)) { |
7c832835 | 2751 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
1da177e4 | 2752 | a1 = a; |
33079b21 MM |
2753 | if ((a & 0x04)) { |
2754 | a2 = (a >> 3); | |
f880632f | 2755 | if (a2 >= h->nr_cmds) { |
7c832835 BH |
2756 | printk(KERN_WARNING |
2757 | "cciss: controller cciss%d failed, stopping.\n", | |
2758 | h->ctlr); | |
33079b21 MM |
2759 | fail_all_cmds(h->ctlr); |
2760 | return IRQ_HANDLED; | |
2761 | } | |
2762 | ||
2763 | c = h->cmd_pool + a2; | |
2764 | a = c->busaddr; | |
2765 | ||
2766 | } else { | |
7c832835 | 2767 | a &= ~3; |
33079b21 | 2768 | if ((c = h->cmpQ) == NULL) { |
7c832835 BH |
2769 | printk(KERN_WARNING |
2770 | "cciss: Completion of %08x ignored\n", | |
2771 | a1); | |
2772 | continue; | |
2773 | } | |
2774 | while (c->busaddr != a) { | |
2775 | c = c->next; | |
2776 | if (c == h->cmpQ) | |
2777 | break; | |
2778 | } | |
33079b21 | 2779 | } |
1da177e4 LT |
2780 | /* |
2781 | * If we've found the command, take it off the | |
2782 | * completion Q and free it | |
2783 | */ | |
7c832835 | 2784 | if (c->busaddr == a) { |
1da177e4 LT |
2785 | removeQ(&h->cmpQ, c); |
2786 | if (c->cmd_type == CMD_RWREQ) { | |
2787 | complete_command(h, c, 0); | |
2788 | } else if (c->cmd_type == CMD_IOCTL_PEND) { | |
2789 | complete(c->waiting); | |
2790 | } | |
2791 | # ifdef CONFIG_CISS_SCSI_TAPE | |
2792 | else if (c->cmd_type == CMD_SCSI) | |
2793 | complete_scsi_command(c, 0, a1); | |
2794 | # endif | |
2795 | continue; | |
2796 | } | |
2797 | } | |
2798 | } | |
2799 | ||
1da177e4 LT |
2800 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2801 | return IRQ_HANDLED; | |
2802 | } | |
7c832835 BH |
2803 | |
2804 | /* | |
d14c4ab5 | 2805 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 2806 | * the io functions. |
7c832835 | 2807 | * This is for debug only. |
1da177e4 LT |
2808 | */ |
2809 | #ifdef CCISS_DEBUG | |
7c832835 | 2810 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 LT |
2811 | { |
2812 | int i; | |
2813 | char temp_name[17]; | |
2814 | ||
2815 | printk("Controller Configuration information\n"); | |
2816 | printk("------------------------------------\n"); | |
7c832835 | 2817 | for (i = 0; i < 4; i++) |
1da177e4 | 2818 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
2819 | temp_name[4] = '\0'; |
2820 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 2821 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
2822 | printk(" Transport methods supported = 0x%x\n", |
2823 | readl(&(tb->TransportSupport))); | |
2824 | printk(" Transport methods active = 0x%x\n", | |
2825 | readl(&(tb->TransportActive))); | |
2826 | printk(" Requested transport Method = 0x%x\n", | |
2827 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 2828 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 2829 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 2830 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
2831 | readl(&(tb->HostWrite.CoalIntCount))); |
2832 | printk(" Max outstanding commands = 0x%d\n", | |
2833 | readl(&(tb->CmdsOutMax))); | |
2834 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
2835 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
2836 | temp_name[i] = readb(&(tb->ServerName[i])); |
2837 | temp_name[16] = '\0'; | |
2838 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 2839 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
1da177e4 | 2840 | } |
7c832835 | 2841 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2842 | |
7c832835 | 2843 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
2844 | { |
2845 | int i, offset, mem_type, bar_type; | |
7c832835 | 2846 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
2847 | return 0; |
2848 | offset = 0; | |
7c832835 BH |
2849 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
2850 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
2851 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
2852 | offset += 4; | |
2853 | else { | |
2854 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 2855 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 2856 | switch (mem_type) { |
7c832835 BH |
2857 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
2858 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
2859 | offset += 4; /* 32 bit */ | |
2860 | break; | |
2861 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
2862 | offset += 8; | |
2863 | break; | |
2864 | default: /* reserved in PCI 2.2 */ | |
2865 | printk(KERN_WARNING | |
2866 | "Base address is invalid\n"); | |
2867 | return -1; | |
1da177e4 LT |
2868 | break; |
2869 | } | |
2870 | } | |
7c832835 BH |
2871 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
2872 | return i + 1; | |
1da177e4 LT |
2873 | } |
2874 | return -1; | |
2875 | } | |
2876 | ||
fb86a35b MM |
2877 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
2878 | * controllers that are capable. If not, we use IO-APIC mode. | |
2879 | */ | |
2880 | ||
7c832835 BH |
2881 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
2882 | struct pci_dev *pdev, __u32 board_id) | |
fb86a35b MM |
2883 | { |
2884 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
2885 | int err; |
2886 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
2887 | {0, 2}, {0, 3} | |
2888 | }; | |
fb86a35b MM |
2889 | |
2890 | /* Some boards advertise MSI but don't really support it */ | |
2891 | if ((board_id == 0x40700E11) || | |
7c832835 BH |
2892 | (board_id == 0x40800E11) || |
2893 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
fb86a35b MM |
2894 | goto default_int_mode; |
2895 | ||
7c832835 BH |
2896 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
2897 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); | |
2898 | if (!err) { | |
2899 | c->intr[0] = cciss_msix_entries[0].vector; | |
2900 | c->intr[1] = cciss_msix_entries[1].vector; | |
2901 | c->intr[2] = cciss_msix_entries[2].vector; | |
2902 | c->intr[3] = cciss_msix_entries[3].vector; | |
2903 | c->msix_vector = 1; | |
2904 | return; | |
2905 | } | |
2906 | if (err > 0) { | |
2907 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
2908 | "available\n", err); | |
1ecb9c0f | 2909 | goto default_int_mode; |
7c832835 BH |
2910 | } else { |
2911 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
2912 | err); | |
1ecb9c0f | 2913 | goto default_int_mode; |
7c832835 BH |
2914 | } |
2915 | } | |
2916 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
2917 | if (!pci_enable_msi(pdev)) { | |
7c832835 | 2918 | c->msi_vector = 1; |
7c832835 BH |
2919 | } else { |
2920 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
7c832835 BH |
2921 | } |
2922 | } | |
1ecb9c0f | 2923 | default_int_mode: |
7c832835 | 2924 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 2925 | /* if we get here we're going to use the default interrupt mode */ |
7c832835 | 2926 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
fb86a35b MM |
2927 | return; |
2928 | } | |
2929 | ||
1da177e4 LT |
2930 | static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
2931 | { | |
2932 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
2933 | __u32 board_id, scratchpad = 0; | |
2934 | __u64 cfg_offset; | |
2935 | __u32 cfg_base_addr; | |
2936 | __u64 cfg_base_addr_index; | |
c33ac89b | 2937 | int i, err; |
1da177e4 LT |
2938 | |
2939 | /* check to see if controller has been disabled */ | |
2940 | /* BEFORE trying to enable it */ | |
7c832835 BH |
2941 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
2942 | if (!(command & 0x02)) { | |
2943 | printk(KERN_WARNING | |
2944 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 2945 | return -ENODEV; |
1da177e4 LT |
2946 | } |
2947 | ||
c33ac89b | 2948 | err = pci_enable_device(pdev); |
7c832835 | 2949 | if (err) { |
1da177e4 | 2950 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 2951 | return err; |
1da177e4 | 2952 | } |
1da177e4 | 2953 | |
4e570309 BH |
2954 | err = pci_request_regions(pdev, "cciss"); |
2955 | if (err) { | |
2956 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 2957 | "aborting\n"); |
872225ca | 2958 | return err; |
4e570309 BH |
2959 | } |
2960 | ||
1da177e4 LT |
2961 | subsystem_vendor_id = pdev->subsystem_vendor; |
2962 | subsystem_device_id = pdev->subsystem_device; | |
2963 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
7c832835 | 2964 | subsystem_vendor_id); |
1da177e4 | 2965 | |
1da177e4 LT |
2966 | #ifdef CCISS_DEBUG |
2967 | printk("command = %x\n", command); | |
2968 | printk("irq = %x\n", pdev->irq); | |
2969 | printk("board_id = %x\n", board_id); | |
7c832835 | 2970 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2971 | |
fb86a35b MM |
2972 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
2973 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
2974 | */ | |
2975 | cciss_interrupt_mode(c, pdev, board_id); | |
1da177e4 LT |
2976 | |
2977 | /* | |
2978 | * Memory base addr is first addr , the second points to the config | |
7c832835 | 2979 | * table |
1da177e4 LT |
2980 | */ |
2981 | ||
7c832835 | 2982 | c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */ |
1da177e4 LT |
2983 | #ifdef CCISS_DEBUG |
2984 | printk("address 0 = %x\n", c->paddr); | |
7c832835 | 2985 | #endif /* CCISS_DEBUG */ |
a5b92873 | 2986 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
1da177e4 LT |
2987 | |
2988 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
2989 | * We poll for up to 120 secs, once per 100ms. */ | |
7c832835 | 2990 | for (i = 0; i < 1200; i++) { |
1da177e4 LT |
2991 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
2992 | if (scratchpad == CCISS_FIRMWARE_READY) | |
2993 | break; | |
2994 | set_current_state(TASK_INTERRUPTIBLE); | |
7c832835 | 2995 | schedule_timeout(HZ / 10); /* wait 100ms */ |
1da177e4 LT |
2996 | } |
2997 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
2998 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
c33ac89b | 2999 | err = -ENODEV; |
4e570309 | 3000 | goto err_out_free_res; |
1da177e4 LT |
3001 | } |
3002 | ||
3003 | /* get the address index number */ | |
3004 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
3005 | cfg_base_addr &= (__u32) 0x0000ffff; | |
3006 | #ifdef CCISS_DEBUG | |
3007 | printk("cfg base address = %x\n", cfg_base_addr); | |
7c832835 BH |
3008 | #endif /* CCISS_DEBUG */ |
3009 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); | |
1da177e4 LT |
3010 | #ifdef CCISS_DEBUG |
3011 | printk("cfg base address index = %x\n", cfg_base_addr_index); | |
7c832835 | 3012 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
3013 | if (cfg_base_addr_index == -1) { |
3014 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
c33ac89b | 3015 | err = -ENODEV; |
4e570309 | 3016 | goto err_out_free_res; |
1da177e4 LT |
3017 | } |
3018 | ||
3019 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
3020 | #ifdef CCISS_DEBUG | |
3021 | printk("cfg offset = %x\n", cfg_offset); | |
7c832835 BH |
3022 | #endif /* CCISS_DEBUG */ |
3023 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
3024 | cfg_base_addr_index) + | |
3025 | cfg_offset, sizeof(CfgTable_struct)); | |
1da177e4 LT |
3026 | c->board_id = board_id; |
3027 | ||
3028 | #ifdef CCISS_DEBUG | |
945f390f | 3029 | print_cfg_table(c->cfgtable); |
7c832835 | 3030 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3031 | |
7c832835 | 3032 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
1da177e4 LT |
3033 | if (board_id == products[i].board_id) { |
3034 | c->product_name = products[i].product_name; | |
3035 | c->access = *(products[i].access); | |
f880632f | 3036 | c->nr_cmds = products[i].nr_cmds; |
1da177e4 LT |
3037 | break; |
3038 | } | |
3039 | } | |
7c832835 BH |
3040 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
3041 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
3042 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
3043 | (readb(&c->cfgtable->Signature[3]) != 'S')) { | |
1da177e4 | 3044 | printk("Does not appear to be a valid CISS config table\n"); |
c33ac89b | 3045 | err = -ENODEV; |
4e570309 | 3046 | goto err_out_free_res; |
1da177e4 | 3047 | } |
4ff9a9a4 MM |
3048 | /* We didn't find the controller in our list. We know the |
3049 | * signature is valid. If it's an HP device let's try to | |
3050 | * bind to the device and fire it up. Otherwise we bail. | |
3051 | */ | |
3052 | if (i == ARRAY_SIZE(products)) { | |
3053 | if (subsystem_vendor_id == PCI_VENDOR_ID_HP) { | |
3054 | c->product_name = products[i-1].product_name; | |
3055 | c->access = *(products[i-1].access); | |
f880632f | 3056 | c->nr_cmds = products[i-1].nr_cmds; |
4ff9a9a4 MM |
3057 | printk(KERN_WARNING "cciss: This is an unknown " |
3058 | "Smart Array controller.\n" | |
3059 | "cciss: Please update to the latest driver " | |
3060 | "available from www.hp.com.\n"); | |
3061 | } else { | |
3062 | printk(KERN_WARNING "cciss: Sorry, I don't know how" | |
3063 | " to access the Smart Array controller %08lx\n" | |
3064 | , (unsigned long)board_id); | |
3065 | err = -ENODEV; | |
3066 | goto err_out_free_res; | |
3067 | } | |
3068 | } | |
1da177e4 | 3069 | #ifdef CONFIG_X86 |
7c832835 BH |
3070 | { |
3071 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
3072 | __u32 prefetch; | |
3073 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
3074 | prefetch |= 0x100; | |
3075 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
3076 | } | |
1da177e4 LT |
3077 | #endif |
3078 | ||
8bf50f71 MMOD |
3079 | /* Disabling DMA prefetch and refetch for the P600. |
3080 | * An ASIC bug may result in accesses to invalid memory addresses. | |
3081 | * We've disabled prefetch for some time now. Testing with XEN | |
3082 | * kernels revealed a bug in the refetch if dom0 resides on a P600. | |
f92e2f5f MM |
3083 | */ |
3084 | if(board_id == 0x3225103C) { | |
3085 | __u32 dma_prefetch; | |
8bf50f71 | 3086 | __u32 dma_refetch; |
f92e2f5f MM |
3087 | dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); |
3088 | dma_prefetch |= 0x8000; | |
3089 | writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); | |
8bf50f71 MMOD |
3090 | pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch); |
3091 | dma_refetch |= 0x1; | |
3092 | pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch); | |
f92e2f5f MM |
3093 | } |
3094 | ||
1da177e4 LT |
3095 | #ifdef CCISS_DEBUG |
3096 | printk("Trying to put board into Simple mode\n"); | |
7c832835 | 3097 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3098 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
7c832835 BH |
3099 | /* Update the field, and then ring the doorbell */ |
3100 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); | |
3101 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); | |
1da177e4 LT |
3102 | |
3103 | /* under certain very rare conditions, this can take awhile. | |
3104 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3105 | * as we enter this code.) */ | |
7c832835 | 3106 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
1da177e4 LT |
3107 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
3108 | break; | |
3109 | /* delay and try again */ | |
3110 | set_current_state(TASK_INTERRUPTIBLE); | |
3111 | schedule_timeout(10); | |
7c832835 | 3112 | } |
1da177e4 LT |
3113 | |
3114 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3115 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
3116 | readl(c->vaddr + SA5_DOORBELL)); | |
3117 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3118 | #ifdef CCISS_DEBUG |
7c832835 BH |
3119 | print_cfg_table(c->cfgtable); |
3120 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3121 | |
7c832835 | 3122 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
1da177e4 | 3123 | printk(KERN_WARNING "cciss: unable to get board into" |
7c832835 | 3124 | " simple mode\n"); |
c33ac89b | 3125 | err = -ENODEV; |
4e570309 | 3126 | goto err_out_free_res; |
1da177e4 LT |
3127 | } |
3128 | return 0; | |
3129 | ||
5faad620 | 3130 | err_out_free_res: |
872225ca MM |
3131 | /* |
3132 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3133 | * Smart Array controllers that pci_enable_device does not undo | |
3134 | */ | |
4e570309 | 3135 | pci_release_regions(pdev); |
c33ac89b | 3136 | return err; |
1da177e4 LT |
3137 | } |
3138 | ||
7c832835 BH |
3139 | /* |
3140 | * Gets information about the local volumes attached to the controller. | |
3141 | */ | |
1da177e4 LT |
3142 | static void cciss_getgeometry(int cntl_num) |
3143 | { | |
3144 | ReportLunData_struct *ld_buff; | |
1da177e4 LT |
3145 | InquiryData_struct *inq_buff; |
3146 | int return_code; | |
3147 | int i; | |
3148 | int listlength = 0; | |
3149 | __u32 lunid = 0; | |
b4482a4b | 3150 | unsigned block_size; |
00988a35 | 3151 | sector_t total_size; |
1da177e4 | 3152 | |
06ff37ff | 3153 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
7c832835 BH |
3154 | if (ld_buff == NULL) { |
3155 | printk(KERN_ERR "cciss: out of memory\n"); | |
3156 | return; | |
3157 | } | |
7c832835 BH |
3158 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
3159 | if (inq_buff == NULL) { | |
3160 | printk(KERN_ERR "cciss: out of memory\n"); | |
1da177e4 | 3161 | kfree(ld_buff); |
7c832835 BH |
3162 | return; |
3163 | } | |
3164 | /* Get the firmware version */ | |
3165 | return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff, | |
3166 | sizeof(InquiryData_struct), 0, 0, 0, NULL, | |
3167 | TYPE_CMD); | |
3168 | if (return_code == IO_OK) { | |
1da177e4 LT |
3169 | hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32]; |
3170 | hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33]; | |
3171 | hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34]; | |
3172 | hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35]; | |
7c832835 BH |
3173 | } else { /* send command failed */ |
3174 | ||
1da177e4 | 3175 | printk(KERN_WARNING "cciss: unable to determine firmware" |
7c832835 | 3176 | " version of controller\n"); |
1da177e4 | 3177 | } |
7c832835 BH |
3178 | /* Get the number of logical volumes */ |
3179 | return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff, | |
3180 | sizeof(ReportLunData_struct), 0, 0, 0, NULL, | |
3181 | TYPE_CMD); | |
1da177e4 | 3182 | |
7c832835 | 3183 | if (return_code == IO_OK) { |
1da177e4 LT |
3184 | #ifdef CCISS_DEBUG |
3185 | printk("LUN Data\n--------------------------\n"); | |
7c832835 BH |
3186 | #endif /* CCISS_DEBUG */ |
3187 | ||
3188 | listlength |= | |
3189 | (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24; | |
3190 | listlength |= | |
3191 | (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16; | |
3192 | listlength |= | |
3193 | (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8; | |
1da177e4 | 3194 | listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]); |
7c832835 BH |
3195 | } else { /* reading number of logical volumes failed */ |
3196 | ||
1da177e4 | 3197 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 3198 | " command failed\n"); |
1da177e4 LT |
3199 | listlength = 0; |
3200 | } | |
7c832835 BH |
3201 | hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry |
3202 | if (hba[cntl_num]->num_luns > CISS_MAX_LUN) { | |
3203 | printk(KERN_ERR | |
3204 | "ciss: only %d number of logical volumes supported\n", | |
3205 | CISS_MAX_LUN); | |
1da177e4 LT |
3206 | hba[cntl_num]->num_luns = CISS_MAX_LUN; |
3207 | } | |
3208 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3209 | printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", |
3210 | ld_buff->LUNListLength[0], ld_buff->LUNListLength[1], | |
3211 | ld_buff->LUNListLength[2], ld_buff->LUNListLength[3], | |
3212 | hba[cntl_num]->num_luns); | |
3213 | #endif /* CCISS_DEBUG */ | |
3214 | ||
3215 | hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns - 1; | |
7c832835 BH |
3216 | for (i = 0; i < CISS_MAX_LUN; i++) { |
3217 | if (i < hba[cntl_num]->num_luns) { | |
3218 | lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) | |
3219 | << 24; | |
3220 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) | |
3221 | << 16; | |
3222 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) | |
3223 | << 8; | |
3224 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
3225 | ||
3226 | hba[cntl_num]->drv[i].LunID = lunid; | |
1da177e4 LT |
3227 | |
3228 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3229 | printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i, |
3230 | ld_buff->LUN[i][0], ld_buff->LUN[i][1], | |
3231 | ld_buff->LUN[i][2], ld_buff->LUN[i][3], | |
3232 | hba[cntl_num]->drv[i].LunID); | |
3233 | #endif /* CCISS_DEBUG */ | |
00988a35 MMOD |
3234 | |
3235 | /* testing to see if 16-byte CDBs are already being used */ | |
3236 | if(hba[cntl_num]->cciss_read == CCISS_READ_16) { | |
3237 | cciss_read_capacity_16(cntl_num, i, 0, | |
7c832835 | 3238 | &total_size, &block_size); |
00988a35 MMOD |
3239 | goto geo_inq; |
3240 | } | |
3241 | cciss_read_capacity(cntl_num, i, 0, &total_size, &block_size); | |
3242 | ||
97c06978 MMOD |
3243 | /* If read_capacity returns all F's the logical is >2TB */ |
3244 | /* so we switch to 16-byte CDBs for all read/write ops */ | |
3245 | if(total_size == 0xFFFFFFFFULL) { | |
00988a35 MMOD |
3246 | cciss_read_capacity_16(cntl_num, i, 0, |
3247 | &total_size, &block_size); | |
3248 | hba[cntl_num]->cciss_read = CCISS_READ_16; | |
3249 | hba[cntl_num]->cciss_write = CCISS_WRITE_16; | |
3250 | } else { | |
3251 | hba[cntl_num]->cciss_read = CCISS_READ_10; | |
3252 | hba[cntl_num]->cciss_write = CCISS_WRITE_10; | |
3253 | } | |
3254 | geo_inq: | |
ddd47442 | 3255 | cciss_geometry_inquiry(cntl_num, i, 0, total_size, |
7c832835 BH |
3256 | block_size, inq_buff, |
3257 | &hba[cntl_num]->drv[i]); | |
ddd47442 MM |
3258 | } else { |
3259 | /* initialize raid_level to indicate a free space */ | |
3260 | hba[cntl_num]->drv[i].raid_level = -1; | |
3261 | } | |
1da177e4 LT |
3262 | } |
3263 | kfree(ld_buff); | |
1da177e4 | 3264 | kfree(inq_buff); |
7c832835 | 3265 | } |
1da177e4 LT |
3266 | |
3267 | /* Function to find the first free pointer into our hba[] array */ | |
3268 | /* Returns -1 if no free entries are left. */ | |
3269 | static int alloc_cciss_hba(void) | |
3270 | { | |
799202cb | 3271 | int i; |
1da177e4 | 3272 | |
7c832835 | 3273 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
3274 | if (!hba[i]) { |
3275 | ctlr_info_t *p; | |
f2912a12 | 3276 | |
06ff37ff | 3277 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
3278 | if (!p) |
3279 | goto Enomem; | |
799202cb | 3280 | p->gendisk[0] = alloc_disk(1 << NWD_SHIFT); |
f2912a12 JJ |
3281 | if (!p->gendisk[0]) { |
3282 | kfree(p); | |
799202cb | 3283 | goto Enomem; |
f2912a12 | 3284 | } |
1da177e4 LT |
3285 | hba[i] = p; |
3286 | return i; | |
3287 | } | |
3288 | } | |
3289 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 3290 | " of %d controllers.\n", MAX_CTLR); |
799202cb MM |
3291 | return -1; |
3292 | Enomem: | |
1da177e4 | 3293 | printk(KERN_ERR "cciss: out of memory.\n"); |
1da177e4 LT |
3294 | return -1; |
3295 | } | |
3296 | ||
3297 | static void free_hba(int i) | |
3298 | { | |
3299 | ctlr_info_t *p = hba[i]; | |
3300 | int n; | |
3301 | ||
3302 | hba[i] = NULL; | |
799202cb | 3303 | for (n = 0; n < CISS_MAX_LUN; n++) |
1da177e4 LT |
3304 | put_disk(p->gendisk[n]); |
3305 | kfree(p); | |
3306 | } | |
3307 | ||
3308 | /* | |
3309 | * This is it. Find all the controllers and register them. I really hate | |
3310 | * stealing all these major device numbers. | |
3311 | * returns the number of block devices registered. | |
3312 | */ | |
3313 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 3314 | const struct pci_device_id *ent) |
1da177e4 | 3315 | { |
1da177e4 | 3316 | int i; |
799202cb | 3317 | int j = 0; |
1da177e4 | 3318 | int rc; |
40aabb58 | 3319 | int dac; |
1da177e4 | 3320 | |
1da177e4 | 3321 | i = alloc_cciss_hba(); |
7c832835 | 3322 | if (i < 0) |
e2019b58 | 3323 | return -1; |
1f8ef380 MM |
3324 | |
3325 | hba[i]->busy_initializing = 1; | |
3326 | ||
1da177e4 LT |
3327 | if (cciss_pci_init(hba[i], pdev) != 0) |
3328 | goto clean1; | |
3329 | ||
3330 | sprintf(hba[i]->devname, "cciss%d", i); | |
3331 | hba[i]->ctlr = i; | |
3332 | hba[i]->pdev = pdev; | |
3333 | ||
3334 | /* configure PCI DMA stuff */ | |
eb0df996 | 3335 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) |
40aabb58 | 3336 | dac = 1; |
eb0df996 | 3337 | else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) |
40aabb58 | 3338 | dac = 0; |
1da177e4 | 3339 | else { |
40aabb58 | 3340 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
3341 | goto clean1; |
3342 | } | |
3343 | ||
3344 | /* | |
3345 | * register with the major number, or get a dynamic major number | |
3346 | * by passing 0 as argument. This is done for greater than | |
3347 | * 8 controller support. | |
3348 | */ | |
3349 | if (i < MAX_CTLR_ORIG) | |
564de74a | 3350 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 3351 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3352 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 3353 | printk(KERN_ERR |
7c832835 BH |
3354 | "cciss: Unable to get major number %d for %s " |
3355 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 3356 | goto clean1; |
7c832835 | 3357 | } else { |
1da177e4 LT |
3358 | if (i >= MAX_CTLR_ORIG) |
3359 | hba[i]->major = rc; | |
3360 | } | |
3361 | ||
3362 | /* make sure the board interrupts are off */ | |
3363 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
7c832835 | 3364 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
69ab3912 | 3365 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
1da177e4 | 3366 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
7c832835 | 3367 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
1da177e4 LT |
3368 | goto clean2; |
3369 | } | |
40aabb58 BH |
3370 | |
3371 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 BH |
3372 | hba[i]->devname, pdev->device, pci_name(pdev), |
3373 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); | |
3374 | ||
3375 | hba[i]->cmd_pool_bits = | |
f880632f | 3376 | kmalloc(((hba[i]->nr_cmds + BITS_PER_LONG - |
7c832835 BH |
3377 | 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL); |
3378 | hba[i]->cmd_pool = (CommandList_struct *) | |
3379 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3380 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
3381 | &(hba[i]->cmd_pool_dhandle)); |
3382 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
3383 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3384 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
3385 | &(hba[i]->errinfo_pool_dhandle)); |
3386 | if ((hba[i]->cmd_pool_bits == NULL) | |
3387 | || (hba[i]->cmd_pool == NULL) | |
3388 | || (hba[i]->errinfo_pool == NULL)) { | |
3389 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
3390 | goto clean4; |
3391 | } | |
3da8b713 | 3392 | #ifdef CONFIG_CISS_SCSI_TAPE |
7c832835 BH |
3393 | hba[i]->scsi_rejects.complete = |
3394 | kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) * | |
f880632f | 3395 | (hba[i]->nr_cmds + 5), GFP_KERNEL); |
3da8b713 | 3396 | if (hba[i]->scsi_rejects.complete == NULL) { |
7c832835 | 3397 | printk(KERN_ERR "cciss: out of memory"); |
3da8b713 | 3398 | goto clean4; |
3399 | } | |
3400 | #endif | |
1da177e4 | 3401 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 3402 | |
7c832835 BH |
3403 | /* Initialize the pdev driver private data. |
3404 | have it point to hba[i]. */ | |
1da177e4 | 3405 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
3406 | /* command and error info recs zeroed out before |
3407 | they are used */ | |
3408 | memset(hba[i]->cmd_pool_bits, 0, | |
f880632f | 3409 | ((hba[i]->nr_cmds + BITS_PER_LONG - |
7c832835 | 3410 | 1) / BITS_PER_LONG) * sizeof(unsigned long)); |
1da177e4 | 3411 | |
7c832835 BH |
3412 | #ifdef CCISS_DEBUG |
3413 | printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n", i); | |
3414 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
3415 | |
3416 | cciss_getgeometry(i); | |
3417 | ||
3418 | cciss_scsi_setup(i); | |
3419 | ||
3420 | /* Turn the interrupts on so we can service requests */ | |
3421 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
3422 | ||
3423 | cciss_procinit(i); | |
92c4231a MM |
3424 | |
3425 | hba[i]->cciss_max_sectors = 2048; | |
3426 | ||
d6dbf42e | 3427 | hba[i]->busy_initializing = 0; |
1da177e4 | 3428 | |
799202cb | 3429 | do { |
ad2b9312 MM |
3430 | drive_info_struct *drv = &(hba[i]->drv[j]); |
3431 | struct gendisk *disk = hba[i]->gendisk[j]; | |
165125e1 | 3432 | struct request_queue *q; |
799202cb MM |
3433 | |
3434 | /* Check if the disk was allocated already */ | |
3435 | if (!disk){ | |
3436 | hba[i]->gendisk[j] = alloc_disk(1 << NWD_SHIFT); | |
3437 | disk = hba[i]->gendisk[j]; | |
3438 | } | |
3439 | ||
3440 | /* Check that the disk was able to be allocated */ | |
3441 | if (!disk) { | |
3442 | printk(KERN_ERR "cciss: unable to allocate memory for disk %d\n", j); | |
3443 | goto clean4; | |
3444 | } | |
ad2b9312 MM |
3445 | |
3446 | q = blk_init_queue(do_cciss_request, &hba[i]->lock); | |
3447 | if (!q) { | |
3448 | printk(KERN_ERR | |
7c832835 BH |
3449 | "cciss: unable to allocate queue for disk %d\n", |
3450 | j); | |
799202cb | 3451 | goto clean4; |
ad2b9312 MM |
3452 | } |
3453 | drv->queue = q; | |
3454 | ||
3455 | q->backing_dev_info.ra_pages = READ_AHEAD; | |
a9925a06 JA |
3456 | blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask); |
3457 | ||
3458 | /* This is a hardware imposed limit. */ | |
3459 | blk_queue_max_hw_segments(q, MAXSGENTRIES); | |
1da177e4 | 3460 | |
a9925a06 JA |
3461 | /* This is a limit in the driver and could be eliminated. */ |
3462 | blk_queue_max_phys_segments(q, MAXSGENTRIES); | |
1da177e4 | 3463 | |
92c4231a | 3464 | blk_queue_max_sectors(q, hba[i]->cciss_max_sectors); |
1da177e4 | 3465 | |
a9925a06 | 3466 | blk_queue_softirq_done(q, cciss_softirq_done); |
1da177e4 | 3467 | |
ad2b9312 | 3468 | q->queuedata = hba[i]; |
1da177e4 | 3469 | sprintf(disk->disk_name, "cciss/c%dd%d", i, j); |
1da177e4 LT |
3470 | disk->major = hba[i]->major; |
3471 | disk->first_minor = j << NWD_SHIFT; | |
3472 | disk->fops = &cciss_fops; | |
ad2b9312 | 3473 | disk->queue = q; |
1da177e4 | 3474 | disk->private_data = drv; |
27c0ff86 | 3475 | disk->driverfs_dev = &pdev->dev; |
1da177e4 LT |
3476 | /* we must register the controller even if no disks exist */ |
3477 | /* this is for the online array utilities */ | |
7c832835 | 3478 | if (!drv->heads && j) |
1da177e4 | 3479 | continue; |
ad2b9312 | 3480 | blk_queue_hardsect_size(q, drv->block_size); |
1da177e4 LT |
3481 | set_capacity(disk, drv->nr_blocks); |
3482 | add_disk(disk); | |
799202cb MM |
3483 | j++; |
3484 | } while (j <= hba[i]->highest_lun); | |
ad2b9312 | 3485 | |
e2019b58 | 3486 | return 1; |
1da177e4 | 3487 | |
7c832835 | 3488 | clean4: |
3da8b713 | 3489 | #ifdef CONFIG_CISS_SCSI_TAPE |
1acc0b0b | 3490 | kfree(hba[i]->scsi_rejects.complete); |
3da8b713 | 3491 | #endif |
6044ec88 | 3492 | kfree(hba[i]->cmd_pool_bits); |
7c832835 | 3493 | if (hba[i]->cmd_pool) |
1da177e4 | 3494 | pci_free_consistent(hba[i]->pdev, |
f880632f | 3495 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
3496 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
3497 | if (hba[i]->errinfo_pool) | |
1da177e4 | 3498 | pci_free_consistent(hba[i]->pdev, |
f880632f | 3499 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
3500 | hba[i]->errinfo_pool, |
3501 | hba[i]->errinfo_pool_dhandle); | |
fb86a35b | 3502 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
7c832835 | 3503 | clean2: |
1da177e4 | 3504 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3505 | clean1: |
1f8ef380 | 3506 | hba[i]->busy_initializing = 0; |
799202cb MM |
3507 | /* cleanup any queues that may have been initialized */ |
3508 | for (j=0; j <= hba[i]->highest_lun; j++){ | |
3509 | drive_info_struct *drv = &(hba[i]->drv[j]); | |
3510 | if (drv->queue) | |
3511 | blk_cleanup_queue(drv->queue); | |
3512 | } | |
872225ca MM |
3513 | /* |
3514 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3515 | * Smart Array controllers that pci_enable_device does not undo | |
3516 | */ | |
799202cb | 3517 | pci_release_regions(pdev); |
799202cb | 3518 | pci_set_drvdata(pdev, NULL); |
61808c2b | 3519 | free_hba(i); |
e2019b58 | 3520 | return -1; |
1da177e4 LT |
3521 | } |
3522 | ||
e9ca75b5 | 3523 | static void cciss_shutdown(struct pci_dev *pdev) |
1da177e4 LT |
3524 | { |
3525 | ctlr_info_t *tmp_ptr; | |
e9ca75b5 | 3526 | int i; |
1da177e4 | 3527 | char flush_buf[4]; |
7c832835 | 3528 | int return_code; |
1da177e4 | 3529 | |
e9ca75b5 GB |
3530 | tmp_ptr = pci_get_drvdata(pdev); |
3531 | if (tmp_ptr == NULL) | |
3532 | return; | |
3533 | i = tmp_ptr->ctlr; | |
3534 | if (hba[i] == NULL) | |
3535 | return; | |
3536 | ||
3537 | /* Turn board interrupts off and send the flush cache command */ | |
3538 | /* sendcmd will turn off interrupt, and send the flush... | |
3539 | * To write all data in the battery backed cache to disks */ | |
3540 | memset(flush_buf, 0, 4); | |
3541 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL, | |
3542 | TYPE_CMD); | |
3543 | if (return_code == IO_OK) { | |
3544 | printk(KERN_INFO "Completed flushing cache on controller %d\n", i); | |
3545 | } else { | |
3546 | printk(KERN_WARNING "Error flushing cache on controller %d\n", i); | |
3547 | } | |
3548 | free_irq(hba[i]->intr[2], hba[i]); | |
3549 | } | |
3550 | ||
3551 | static void __devexit cciss_remove_one(struct pci_dev *pdev) | |
3552 | { | |
3553 | ctlr_info_t *tmp_ptr; | |
3554 | int i, j; | |
3555 | ||
7c832835 BH |
3556 | if (pci_get_drvdata(pdev) == NULL) { |
3557 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
3558 | return; |
3559 | } | |
3560 | tmp_ptr = pci_get_drvdata(pdev); | |
3561 | i = tmp_ptr->ctlr; | |
7c832835 | 3562 | if (hba[i] == NULL) { |
1da177e4 | 3563 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 3564 | "already be removed \n"); |
1da177e4 LT |
3565 | return; |
3566 | } | |
b6550777 BH |
3567 | |
3568 | remove_proc_entry(hba[i]->devname, proc_cciss); | |
3569 | unregister_blkdev(hba[i]->major, hba[i]->devname); | |
3570 | ||
3571 | /* remove it from the disk list */ | |
3572 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
3573 | struct gendisk *disk = hba[i]->gendisk[j]; | |
3574 | if (disk) { | |
165125e1 | 3575 | struct request_queue *q = disk->queue; |
b6550777 BH |
3576 | |
3577 | if (disk->flags & GENHD_FL_UP) | |
3578 | del_gendisk(disk); | |
3579 | if (q) | |
3580 | blk_cleanup_queue(q); | |
3581 | } | |
3582 | } | |
3583 | ||
3584 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ | |
3585 | ||
e9ca75b5 | 3586 | cciss_shutdown(pdev); |
fb86a35b MM |
3587 | |
3588 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3589 | if (hba[i]->msix_vector) |
3590 | pci_disable_msix(hba[i]->pdev); | |
3591 | else if (hba[i]->msi_vector) | |
3592 | pci_disable_msi(hba[i]->pdev); | |
3593 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 3594 | |
1da177e4 | 3595 | iounmap(hba[i]->vaddr); |
1da177e4 | 3596 | |
f880632f | 3597 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
1da177e4 | 3598 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
f880632f | 3599 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 | 3600 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
1da177e4 | 3601 | kfree(hba[i]->cmd_pool_bits); |
3da8b713 | 3602 | #ifdef CONFIG_CISS_SCSI_TAPE |
3603 | kfree(hba[i]->scsi_rejects.complete); | |
3604 | #endif | |
872225ca MM |
3605 | /* |
3606 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3607 | * Smart Array controllers that pci_enable_device does not undo | |
3608 | */ | |
7c832835 | 3609 | pci_release_regions(pdev); |
4e570309 | 3610 | pci_set_drvdata(pdev, NULL); |
1da177e4 | 3611 | free_hba(i); |
7c832835 | 3612 | } |
1da177e4 LT |
3613 | |
3614 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
3615 | .name = "cciss", |
3616 | .probe = cciss_init_one, | |
3617 | .remove = __devexit_p(cciss_remove_one), | |
3618 | .id_table = cciss_pci_device_id, /* id_table */ | |
e9ca75b5 | 3619 | .shutdown = cciss_shutdown, |
1da177e4 LT |
3620 | }; |
3621 | ||
3622 | /* | |
3623 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 3624 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
3625 | */ |
3626 | static int __init cciss_init(void) | |
3627 | { | |
3628 | printk(KERN_INFO DRIVER_NAME "\n"); | |
3629 | ||
3630 | /* Register for our PCI devices */ | |
9bfab8ce | 3631 | return pci_register_driver(&cciss_pci_driver); |
1da177e4 LT |
3632 | } |
3633 | ||
3634 | static void __exit cciss_cleanup(void) | |
3635 | { | |
3636 | int i; | |
3637 | ||
3638 | pci_unregister_driver(&cciss_pci_driver); | |
3639 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
3640 | for (i = 0; i < MAX_CTLR; i++) { |
3641 | if (hba[i] != NULL) { | |
1da177e4 | 3642 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 3643 | " controller %d\n", i); |
1da177e4 LT |
3644 | cciss_remove_one(hba[i]->pdev); |
3645 | } | |
3646 | } | |
3647 | remove_proc_entry("cciss", proc_root_driver); | |
3648 | } | |
3649 | ||
33079b21 MM |
3650 | static void fail_all_cmds(unsigned long ctlr) |
3651 | { | |
3652 | /* If we get here, the board is apparently dead. */ | |
3653 | ctlr_info_t *h = hba[ctlr]; | |
3654 | CommandList_struct *c; | |
3655 | unsigned long flags; | |
3656 | ||
3657 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); | |
7c832835 | 3658 | h->alive = 0; /* the controller apparently died... */ |
33079b21 MM |
3659 | |
3660 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
3661 | ||
7c832835 | 3662 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
33079b21 MM |
3663 | |
3664 | /* move everything off the request queue onto the completed queue */ | |
7c832835 | 3665 | while ((c = h->reqQ) != NULL) { |
33079b21 MM |
3666 | removeQ(&(h->reqQ), c); |
3667 | h->Qdepth--; | |
7c832835 | 3668 | addQ(&(h->cmpQ), c); |
33079b21 MM |
3669 | } |
3670 | ||
3671 | /* Now, fail everything on the completed queue with a HW error */ | |
7c832835 | 3672 | while ((c = h->cmpQ) != NULL) { |
33079b21 MM |
3673 | removeQ(&h->cmpQ, c); |
3674 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
3675 | if (c->cmd_type == CMD_RWREQ) { | |
3676 | complete_command(h, c, 0); | |
3677 | } else if (c->cmd_type == CMD_IOCTL_PEND) | |
3678 | complete(c->waiting); | |
3679 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
3680 | else if (c->cmd_type == CMD_SCSI) |
3681 | complete_scsi_command(c, 0, 0); | |
33079b21 MM |
3682 | #endif |
3683 | } | |
3684 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
3685 | return; | |
3686 | } | |
3687 | ||
1da177e4 LT |
3688 | module_init(cciss_init); |
3689 | module_exit(cciss_cleanup); |