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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Disk Array driver for HP SA 5xxx and 6xxx Controllers | |
fb86a35b | 3 | * Copyright 2000, 2006 Hewlett-Packard Development Company, L.P. |
1da177e4 LT |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
13 | * NON INFRINGEMENT. See the GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | * | |
19 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com | |
20 | * | |
21 | */ | |
22 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/types.h> | |
26 | #include <linux/pci.h> | |
27 | #include <linux/kernel.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/major.h> | |
31 | #include <linux/fs.h> | |
32 | #include <linux/bio.h> | |
33 | #include <linux/blkpg.h> | |
34 | #include <linux/timer.h> | |
35 | #include <linux/proc_fs.h> | |
7c832835 | 36 | #include <linux/init.h> |
1da177e4 LT |
37 | #include <linux/hdreg.h> |
38 | #include <linux/spinlock.h> | |
39 | #include <linux/compat.h> | |
2056a782 | 40 | #include <linux/blktrace_api.h> |
1da177e4 LT |
41 | #include <asm/uaccess.h> |
42 | #include <asm/io.h> | |
43 | ||
eb0df996 | 44 | #include <linux/dma-mapping.h> |
1da177e4 LT |
45 | #include <linux/blkdev.h> |
46 | #include <linux/genhd.h> | |
47 | #include <linux/completion.h> | |
48 | ||
49 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) | |
9d827c9e MM |
50 | #define DRIVER_NAME "HP CISS Driver (v 3.6.14)" |
51 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3,6,14) | |
1da177e4 LT |
52 | |
53 | /* Embedded module documentation macros - see modules.h */ | |
54 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
9d827c9e | 55 | MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 3.6.14"); |
1da177e4 | 56 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
1883c5ab | 57 | " SA6i P600 P800 P400 P400i E200 E200i E500"); |
9d827c9e | 58 | MODULE_VERSION("3.6.14"); |
1da177e4 LT |
59 | MODULE_LICENSE("GPL"); |
60 | ||
61 | #include "cciss_cmd.h" | |
62 | #include "cciss.h" | |
63 | #include <linux/cciss_ioctl.h> | |
64 | ||
65 | /* define the PCI info for the cards we can control */ | |
66 | static const struct pci_device_id cciss_pci_device_id[] = { | |
f82ccdb9 BH |
67 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
68 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, | |
69 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, | |
70 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, | |
71 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, | |
72 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, | |
73 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, | |
74 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, | |
75 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, | |
76 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, | |
77 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, | |
78 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, | |
79 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, | |
80 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, | |
81 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, | |
82 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, | |
83 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, | |
84 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, | |
de923916 | 85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, |
4ff9a9a4 MM |
86 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
87 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, | |
1da177e4 LT |
88 | {0,} |
89 | }; | |
7c832835 | 90 | |
1da177e4 LT |
91 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
92 | ||
1da177e4 LT |
93 | /* board_id = Subsystem Device ID & Vendor ID |
94 | * product = Marketing Name for the board | |
7c832835 | 95 | * access = Address of the struct of function pointers |
f880632f | 96 | * nr_cmds = Number of commands supported by controller |
1da177e4 LT |
97 | */ |
98 | static struct board_type products[] = { | |
f880632f MM |
99 | {0x40700E11, "Smart Array 5300", &SA5_access, 512}, |
100 | {0x40800E11, "Smart Array 5i", &SA5B_access, 512}, | |
101 | {0x40820E11, "Smart Array 532", &SA5B_access, 512}, | |
102 | {0x40830E11, "Smart Array 5312", &SA5B_access, 512}, | |
103 | {0x409A0E11, "Smart Array 641", &SA5_access, 512}, | |
104 | {0x409B0E11, "Smart Array 642", &SA5_access, 512}, | |
105 | {0x409C0E11, "Smart Array 6400", &SA5_access, 512}, | |
106 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access, 512}, | |
107 | {0x40910E11, "Smart Array 6i", &SA5_access, 512}, | |
108 | {0x3225103C, "Smart Array P600", &SA5_access, 512}, | |
109 | {0x3223103C, "Smart Array P800", &SA5_access, 512}, | |
110 | {0x3234103C, "Smart Array P400", &SA5_access, 512}, | |
111 | {0x3235103C, "Smart Array P400i", &SA5_access, 512}, | |
112 | {0x3211103C, "Smart Array E200i", &SA5_access, 120}, | |
113 | {0x3212103C, "Smart Array E200", &SA5_access, 120}, | |
114 | {0x3213103C, "Smart Array E200i", &SA5_access, 120}, | |
115 | {0x3214103C, "Smart Array E200i", &SA5_access, 120}, | |
116 | {0x3215103C, "Smart Array E200i", &SA5_access, 120}, | |
de923916 | 117 | {0x3237103C, "Smart Array E500", &SA5_access, 512}, |
f880632f | 118 | {0xFFFF103C, "Unknown Smart Array", &SA5_access, 120}, |
1da177e4 LT |
119 | }; |
120 | ||
d14c4ab5 | 121 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
7c832835 | 122 | #define MAX_CONFIG_WAIT 30000 |
1da177e4 LT |
123 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
124 | ||
125 | /*define how many times we will try a command because of bus resets */ | |
126 | #define MAX_CMD_RETRIES 3 | |
127 | ||
128 | #define READ_AHEAD 1024 | |
1da177e4 LT |
129 | #define MAX_CTLR 32 |
130 | ||
131 | /* Originally cciss driver only supports 8 major numbers */ | |
132 | #define MAX_CTLR_ORIG 8 | |
133 | ||
1da177e4 LT |
134 | static ctlr_info_t *hba[MAX_CTLR]; |
135 | ||
136 | static void do_cciss_request(request_queue_t *q); | |
7d12e780 | 137 | static irqreturn_t do_cciss_intr(int irq, void *dev_id); |
1da177e4 LT |
138 | static int cciss_open(struct inode *inode, struct file *filep); |
139 | static int cciss_release(struct inode *inode, struct file *filep); | |
7c832835 BH |
140 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
141 | unsigned int cmd, unsigned long arg); | |
a885c8c4 | 142 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 | 143 | |
1da177e4 | 144 | static int cciss_revalidate(struct gendisk *disk); |
ddd47442 | 145 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk); |
7c832835 BH |
146 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, |
147 | int clear_all); | |
1da177e4 | 148 | |
00988a35 MMOD |
149 | static void cciss_read_capacity(int ctlr, int logvol, int withirq, |
150 | sector_t *total_size, unsigned int *block_size); | |
151 | static void cciss_read_capacity_16(int ctlr, int logvol, int withirq, | |
152 | sector_t *total_size, unsigned int *block_size); | |
153 | static void cciss_geometry_inquiry(int ctlr, int logvol, | |
154 | int withirq, sector_t total_size, | |
155 | unsigned int block_size, InquiryData_struct *inq_buff, | |
7c832835 | 156 | drive_info_struct *drv); |
1da177e4 | 157 | static void cciss_getgeometry(int cntl_num); |
7c832835 BH |
158 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
159 | __u32); | |
160 | static void start_io(ctlr_info_t *h); | |
161 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, | |
162 | unsigned int use_unit_num, unsigned int log_unit, | |
163 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); | |
164 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, | |
165 | unsigned int use_unit_num, unsigned int log_unit, | |
166 | __u8 page_code, int cmd_type); | |
1da177e4 | 167 | |
33079b21 MM |
168 | static void fail_all_cmds(unsigned long ctlr); |
169 | ||
1da177e4 | 170 | #ifdef CONFIG_PROC_FS |
7c832835 BH |
171 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
172 | int length, int *eof, void *data); | |
1da177e4 LT |
173 | static void cciss_procinit(int i); |
174 | #else | |
7c832835 BH |
175 | static void cciss_procinit(int i) |
176 | { | |
177 | } | |
178 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
179 | |
180 | #ifdef CONFIG_COMPAT | |
181 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg); | |
182 | #endif | |
183 | ||
7c832835 BH |
184 | static struct block_device_operations cciss_fops = { |
185 | .owner = THIS_MODULE, | |
186 | .open = cciss_open, | |
187 | .release = cciss_release, | |
188 | .ioctl = cciss_ioctl, | |
189 | .getgeo = cciss_getgeo, | |
1da177e4 | 190 | #ifdef CONFIG_COMPAT |
7c832835 | 191 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 192 | #endif |
7c832835 | 193 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
194 | }; |
195 | ||
196 | /* | |
197 | * Enqueuing and dequeuing functions for cmdlists. | |
198 | */ | |
199 | static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c) | |
200 | { | |
7c832835 BH |
201 | if (*Qptr == NULL) { |
202 | *Qptr = c; | |
203 | c->next = c->prev = c; | |
204 | } else { | |
205 | c->prev = (*Qptr)->prev; | |
206 | c->next = (*Qptr); | |
207 | (*Qptr)->prev->next = c; | |
208 | (*Qptr)->prev = c; | |
209 | } | |
1da177e4 LT |
210 | } |
211 | ||
7c832835 BH |
212 | static inline CommandList_struct *removeQ(CommandList_struct **Qptr, |
213 | CommandList_struct *c) | |
1da177e4 | 214 | { |
7c832835 BH |
215 | if (c && c->next != c) { |
216 | if (*Qptr == c) | |
217 | *Qptr = c->next; | |
218 | c->prev->next = c->next; | |
219 | c->next->prev = c->prev; | |
220 | } else { | |
221 | *Qptr = NULL; | |
222 | } | |
223 | return c; | |
1da177e4 LT |
224 | } |
225 | ||
226 | #include "cciss_scsi.c" /* For SCSI tape support */ | |
227 | ||
228 | #ifdef CONFIG_PROC_FS | |
229 | ||
230 | /* | |
231 | * Report information about this controller. | |
232 | */ | |
233 | #define ENG_GIG 1000000000 | |
234 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
235 | #define RAID_UNKNOWN 6 | |
7c832835 BH |
236 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
237 | "UNKNOWN" | |
238 | }; | |
1da177e4 LT |
239 | |
240 | static struct proc_dir_entry *proc_cciss; | |
241 | ||
7c832835 BH |
242 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
243 | int length, int *eof, void *data) | |
1da177e4 | 244 | { |
7c832835 BH |
245 | off_t pos = 0; |
246 | off_t len = 0; | |
247 | int size, i, ctlr; | |
248 | ctlr_info_t *h = (ctlr_info_t *) data; | |
249 | drive_info_struct *drv; | |
1da177e4 | 250 | unsigned long flags; |
7c832835 | 251 | sector_t vol_sz, vol_sz_frac; |
1da177e4 | 252 | |
7c832835 | 253 | ctlr = h->ctlr; |
1da177e4 LT |
254 | |
255 | /* prevent displaying bogus info during configuration | |
256 | * or deconfiguration of a logical volume | |
257 | */ | |
258 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
259 | if (h->busy_configuring) { | |
260 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 261 | return -EBUSY; |
1da177e4 LT |
262 | } |
263 | h->busy_configuring = 1; | |
264 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
265 | ||
7c832835 BH |
266 | size = sprintf(buffer, "%s: HP %s Controller\n" |
267 | "Board ID: 0x%08lx\n" | |
268 | "Firmware Version: %c%c%c%c\n" | |
269 | "IRQ: %d\n" | |
270 | "Logical drives: %d\n" | |
92c4231a | 271 | "Max sectors: %d\n" |
7c832835 BH |
272 | "Current Q depth: %d\n" |
273 | "Current # commands on controller: %d\n" | |
274 | "Max Q depth since init: %d\n" | |
275 | "Max # commands on controller since init: %d\n" | |
276 | "Max SG entries since init: %d\n\n", | |
277 | h->devname, | |
278 | h->product_name, | |
279 | (unsigned long)h->board_id, | |
280 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
281 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], | |
92c4231a MM |
282 | h->num_luns, |
283 | h->cciss_max_sectors, | |
284 | h->Qdepth, h->commands_outstanding, | |
7c832835 BH |
285 | h->maxQsinceinit, h->max_outstanding, h->maxSG); |
286 | ||
287 | pos += size; | |
288 | len += size; | |
1da177e4 | 289 | cciss_proc_tape_report(ctlr, buffer, &pos, &len); |
7c832835 | 290 | for (i = 0; i <= h->highest_lun; i++) { |
1da177e4 | 291 | |
7c832835 | 292 | drv = &h->drv[i]; |
ddd47442 | 293 | if (drv->heads == 0) |
1da177e4 LT |
294 | continue; |
295 | ||
296 | vol_sz = drv->nr_blocks; | |
297 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
298 | vol_sz_frac *= 100; | |
299 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
300 | ||
301 | if (drv->raid_level > 5) | |
302 | drv->raid_level = RAID_UNKNOWN; | |
7c832835 BH |
303 | size = sprintf(buffer + len, "cciss/c%dd%d:" |
304 | "\t%4u.%02uGB\tRAID %s\n", | |
305 | ctlr, i, (int)vol_sz, (int)vol_sz_frac, | |
306 | raid_label[drv->raid_level]); | |
307 | pos += size; | |
308 | len += size; | |
309 | } | |
310 | ||
311 | *eof = 1; | |
312 | *start = buffer + offset; | |
313 | len -= offset; | |
314 | if (len > length) | |
315 | len = length; | |
1da177e4 | 316 | h->busy_configuring = 0; |
7c832835 | 317 | return len; |
1da177e4 LT |
318 | } |
319 | ||
7c832835 BH |
320 | static int |
321 | cciss_proc_write(struct file *file, const char __user *buffer, | |
322 | unsigned long count, void *data) | |
1da177e4 LT |
323 | { |
324 | unsigned char cmd[80]; | |
325 | int len; | |
326 | #ifdef CONFIG_CISS_SCSI_TAPE | |
327 | ctlr_info_t *h = (ctlr_info_t *) data; | |
328 | int rc; | |
329 | #endif | |
330 | ||
7c832835 BH |
331 | if (count > sizeof(cmd) - 1) |
332 | return -EINVAL; | |
333 | if (copy_from_user(cmd, buffer, count)) | |
334 | return -EFAULT; | |
1da177e4 LT |
335 | cmd[count] = '\0'; |
336 | len = strlen(cmd); // above 3 lines ensure safety | |
7c832835 | 337 | if (len && cmd[len - 1] == '\n') |
1da177e4 LT |
338 | cmd[--len] = '\0'; |
339 | # ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
340 | if (strcmp("engage scsi", cmd) == 0) { |
341 | rc = cciss_engage_scsi(h->ctlr); | |
342 | if (rc != 0) | |
343 | return -rc; | |
344 | return count; | |
345 | } | |
346 | /* might be nice to have "disengage" too, but it's not | |
347 | safely possible. (only 1 module use count, lock issues.) */ | |
1da177e4 LT |
348 | # endif |
349 | return -EINVAL; | |
350 | } | |
351 | ||
352 | /* | |
353 | * Get us a file in /proc/cciss that says something about each controller. | |
354 | * Create /proc/cciss if it doesn't exist yet. | |
355 | */ | |
356 | static void __devinit cciss_procinit(int i) | |
357 | { | |
358 | struct proc_dir_entry *pde; | |
359 | ||
7c832835 BH |
360 | if (proc_cciss == NULL) { |
361 | proc_cciss = proc_mkdir("cciss", proc_root_driver); | |
362 | if (!proc_cciss) | |
1da177e4 | 363 | return; |
7c832835 | 364 | } |
1da177e4 | 365 | |
7c832835 BH |
366 | pde = create_proc_read_entry(hba[i]->devname, |
367 | S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH, | |
368 | proc_cciss, cciss_proc_get_info, hba[i]); | |
1da177e4 LT |
369 | pde->write_proc = cciss_proc_write; |
370 | } | |
7c832835 | 371 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 372 | |
7c832835 BH |
373 | /* |
374 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 375 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
376 | * which ones are free or in use. For operations that can wait for kmalloc |
377 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
378 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
379 | */ | |
380 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
381 | { |
382 | CommandList_struct *c; | |
7c832835 | 383 | int i; |
1da177e4 LT |
384 | u64bit temp64; |
385 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
386 | ||
7c832835 BH |
387 | if (!get_from_pool) { |
388 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
389 | sizeof(CommandList_struct), &cmd_dma_handle); | |
390 | if (c == NULL) | |
391 | return NULL; | |
1da177e4 LT |
392 | memset(c, 0, sizeof(CommandList_struct)); |
393 | ||
33079b21 MM |
394 | c->cmdindex = -1; |
395 | ||
7c832835 BH |
396 | c->err_info = (ErrorInfo_struct *) |
397 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
398 | &err_dma_handle); | |
399 | ||
400 | if (c->err_info == NULL) { | |
401 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
402 | sizeof(CommandList_struct), c, cmd_dma_handle); |
403 | return NULL; | |
404 | } | |
405 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
406 | } else { /* get it out of the controllers pool */ |
407 | ||
408 | do { | |
f880632f MM |
409 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
410 | if (i == h->nr_cmds) | |
7c832835 BH |
411 | return NULL; |
412 | } while (test_and_set_bit | |
413 | (i & (BITS_PER_LONG - 1), | |
414 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
415 | #ifdef CCISS_DEBUG |
416 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
417 | #endif | |
7c832835 | 418 | c = h->cmd_pool + i; |
1da177e4 | 419 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
420 | cmd_dma_handle = h->cmd_pool_dhandle |
421 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
422 | c->err_info = h->errinfo_pool + i; |
423 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
424 | err_dma_handle = h->errinfo_pool_dhandle |
425 | + i * sizeof(ErrorInfo_struct); | |
426 | h->nr_allocs++; | |
33079b21 MM |
427 | |
428 | c->cmdindex = i; | |
7c832835 | 429 | } |
1da177e4 LT |
430 | |
431 | c->busaddr = (__u32) cmd_dma_handle; | |
7c832835 | 432 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
433 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
434 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
435 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 436 | |
7c832835 BH |
437 | c->ctlr = h->ctlr; |
438 | return c; | |
1da177e4 LT |
439 | } |
440 | ||
7c832835 BH |
441 | /* |
442 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
443 | */ |
444 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
445 | { | |
446 | int i; | |
447 | u64bit temp64; | |
448 | ||
7c832835 | 449 | if (!got_from_pool) { |
1da177e4 LT |
450 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
451 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
452 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
453 | c->err_info, (dma_addr_t) temp64.val); | |
454 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
455 | c, (dma_addr_t) c->busaddr); | |
456 | } else { | |
1da177e4 | 457 | i = c - h->cmd_pool; |
7c832835 BH |
458 | clear_bit(i & (BITS_PER_LONG - 1), |
459 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
460 | h->nr_frees++; | |
461 | } | |
1da177e4 LT |
462 | } |
463 | ||
464 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
465 | { | |
7c832835 | 466 | return disk->queue->queuedata; |
1da177e4 LT |
467 | } |
468 | ||
469 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
470 | { | |
471 | return disk->private_data; | |
472 | } | |
473 | ||
474 | /* | |
475 | * Open. Make sure the device is really there. | |
476 | */ | |
477 | static int cciss_open(struct inode *inode, struct file *filep) | |
478 | { | |
479 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
480 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
481 | ||
482 | #ifdef CCISS_DEBUG | |
483 | printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name); | |
7c832835 | 484 | #endif /* CCISS_DEBUG */ |
1da177e4 | 485 | |
ddd47442 MM |
486 | if (host->busy_initializing || drv->busy_configuring) |
487 | return -EBUSY; | |
1da177e4 LT |
488 | /* |
489 | * Root is allowed to open raw volume zero even if it's not configured | |
490 | * so array config can still work. Root is also allowed to open any | |
491 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
492 | * disk information. I don't think I really like this | |
493 | * but I'm already using way to many device nodes to claim another one | |
494 | * for "raw controller". | |
495 | */ | |
7a06f789 | 496 | if (drv->heads == 0) { |
7c832835 | 497 | if (iminor(inode) != 0) { /* not node 0? */ |
1da177e4 LT |
498 | /* if not node 0 make sure it is a partition = 0 */ |
499 | if (iminor(inode) & 0x0f) { | |
7c832835 | 500 | return -ENXIO; |
1da177e4 LT |
501 | /* if it is, make sure we have a LUN ID */ |
502 | } else if (drv->LunID == 0) { | |
503 | return -ENXIO; | |
504 | } | |
505 | } | |
506 | if (!capable(CAP_SYS_ADMIN)) | |
507 | return -EPERM; | |
508 | } | |
509 | drv->usage_count++; | |
510 | host->usage_count++; | |
511 | return 0; | |
512 | } | |
7c832835 | 513 | |
1da177e4 LT |
514 | /* |
515 | * Close. Sync first. | |
516 | */ | |
517 | static int cciss_release(struct inode *inode, struct file *filep) | |
518 | { | |
519 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
520 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
521 | ||
522 | #ifdef CCISS_DEBUG | |
7c832835 BH |
523 | printk(KERN_DEBUG "cciss_release %s\n", |
524 | inode->i_bdev->bd_disk->disk_name); | |
525 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
526 | |
527 | drv->usage_count--; | |
528 | host->usage_count--; | |
529 | return 0; | |
530 | } | |
531 | ||
532 | #ifdef CONFIG_COMPAT | |
533 | ||
534 | static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
535 | { | |
536 | int ret; | |
537 | lock_kernel(); | |
6c648be6 | 538 | ret = cciss_ioctl(f->f_path.dentry->d_inode, f, cmd, arg); |
1da177e4 LT |
539 | unlock_kernel(); |
540 | return ret; | |
541 | } | |
542 | ||
7c832835 BH |
543 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
544 | unsigned long arg); | |
545 | static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, | |
546 | unsigned long arg); | |
1da177e4 LT |
547 | |
548 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
549 | { | |
550 | switch (cmd) { | |
551 | case CCISS_GETPCIINFO: | |
552 | case CCISS_GETINTINFO: | |
553 | case CCISS_SETINTINFO: | |
554 | case CCISS_GETNODENAME: | |
555 | case CCISS_SETNODENAME: | |
556 | case CCISS_GETHEARTBEAT: | |
557 | case CCISS_GETBUSTYPES: | |
558 | case CCISS_GETFIRMVER: | |
559 | case CCISS_GETDRIVVER: | |
560 | case CCISS_REVALIDVOLS: | |
561 | case CCISS_DEREGDISK: | |
562 | case CCISS_REGNEWDISK: | |
563 | case CCISS_REGNEWD: | |
564 | case CCISS_RESCANDISK: | |
565 | case CCISS_GETLUNINFO: | |
566 | return do_ioctl(f, cmd, arg); | |
567 | ||
568 | case CCISS_PASSTHRU32: | |
569 | return cciss_ioctl32_passthru(f, cmd, arg); | |
570 | case CCISS_BIG_PASSTHRU32: | |
571 | return cciss_ioctl32_big_passthru(f, cmd, arg); | |
572 | ||
573 | default: | |
574 | return -ENOIOCTLCMD; | |
575 | } | |
576 | } | |
577 | ||
7c832835 BH |
578 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
579 | unsigned long arg) | |
1da177e4 LT |
580 | { |
581 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 582 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
583 | IOCTL_Command_struct arg64; |
584 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
585 | int err; | |
586 | u32 cp; | |
587 | ||
588 | err = 0; | |
7c832835 BH |
589 | err |= |
590 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
591 | sizeof(arg64.LUN_info)); | |
592 | err |= | |
593 | copy_from_user(&arg64.Request, &arg32->Request, | |
594 | sizeof(arg64.Request)); | |
595 | err |= | |
596 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
597 | sizeof(arg64.error_info)); | |
1da177e4 LT |
598 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
599 | err |= get_user(cp, &arg32->buf); | |
600 | arg64.buf = compat_ptr(cp); | |
601 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
602 | ||
603 | if (err) | |
604 | return -EFAULT; | |
605 | ||
7c832835 | 606 | err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
607 | if (err) |
608 | return err; | |
7c832835 BH |
609 | err |= |
610 | copy_in_user(&arg32->error_info, &p->error_info, | |
611 | sizeof(arg32->error_info)); | |
1da177e4 LT |
612 | if (err) |
613 | return -EFAULT; | |
614 | return err; | |
615 | } | |
616 | ||
7c832835 BH |
617 | static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, |
618 | unsigned long arg) | |
1da177e4 LT |
619 | { |
620 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 621 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 622 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
623 | BIG_IOCTL_Command_struct __user *p = |
624 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
625 | int err; |
626 | u32 cp; | |
627 | ||
628 | err = 0; | |
7c832835 BH |
629 | err |= |
630 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
631 | sizeof(arg64.LUN_info)); | |
632 | err |= | |
633 | copy_from_user(&arg64.Request, &arg32->Request, | |
634 | sizeof(arg64.Request)); | |
635 | err |= | |
636 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
637 | sizeof(arg64.error_info)); | |
1da177e4 LT |
638 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
639 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
640 | err |= get_user(cp, &arg32->buf); | |
641 | arg64.buf = compat_ptr(cp); | |
642 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
643 | ||
644 | if (err) | |
7c832835 | 645 | return -EFAULT; |
1da177e4 | 646 | |
7c832835 | 647 | err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
648 | if (err) |
649 | return err; | |
7c832835 BH |
650 | err |= |
651 | copy_in_user(&arg32->error_info, &p->error_info, | |
652 | sizeof(arg32->error_info)); | |
1da177e4 LT |
653 | if (err) |
654 | return -EFAULT; | |
655 | return err; | |
656 | } | |
657 | #endif | |
a885c8c4 CH |
658 | |
659 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
660 | { | |
661 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
662 | ||
663 | if (!drv->cylinders) | |
664 | return -ENXIO; | |
665 | ||
666 | geo->heads = drv->heads; | |
667 | geo->sectors = drv->sectors; | |
668 | geo->cylinders = drv->cylinders; | |
669 | return 0; | |
670 | } | |
671 | ||
1da177e4 | 672 | /* |
7c832835 | 673 | * ioctl |
1da177e4 | 674 | */ |
7c832835 BH |
675 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
676 | unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
677 | { |
678 | struct block_device *bdev = inode->i_bdev; | |
679 | struct gendisk *disk = bdev->bd_disk; | |
680 | ctlr_info_t *host = get_host(disk); | |
681 | drive_info_struct *drv = get_drv(disk); | |
682 | int ctlr = host->ctlr; | |
683 | void __user *argp = (void __user *)arg; | |
684 | ||
685 | #ifdef CCISS_DEBUG | |
686 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
687 | #endif /* CCISS_DEBUG */ |
688 | ||
689 | switch (cmd) { | |
1da177e4 | 690 | case CCISS_GETPCIINFO: |
7c832835 BH |
691 | { |
692 | cciss_pci_info_struct pciinfo; | |
693 | ||
694 | if (!arg) | |
695 | return -EINVAL; | |
696 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
697 | pciinfo.bus = host->pdev->bus->number; | |
698 | pciinfo.dev_fn = host->pdev->devfn; | |
699 | pciinfo.board_id = host->board_id; | |
700 | if (copy_to_user | |
701 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
702 | return -EFAULT; | |
703 | return 0; | |
704 | } | |
1da177e4 | 705 | case CCISS_GETINTINFO: |
7c832835 BH |
706 | { |
707 | cciss_coalint_struct intinfo; | |
708 | if (!arg) | |
709 | return -EINVAL; | |
710 | intinfo.delay = | |
711 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
712 | intinfo.count = | |
713 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
714 | if (copy_to_user | |
715 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
716 | return -EFAULT; | |
717 | return 0; | |
718 | } | |
1da177e4 | 719 | case CCISS_SETINTINFO: |
1da177e4 | 720 | { |
7c832835 BH |
721 | cciss_coalint_struct intinfo; |
722 | unsigned long flags; | |
723 | int i; | |
724 | ||
725 | if (!arg) | |
726 | return -EINVAL; | |
727 | if (!capable(CAP_SYS_ADMIN)) | |
728 | return -EPERM; | |
729 | if (copy_from_user | |
730 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
731 | return -EFAULT; | |
732 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
733 | { | |
734 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
735 | return -EINVAL; | |
736 | } | |
737 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
738 | /* Update the field, and then ring the doorbell */ | |
739 | writel(intinfo.delay, | |
740 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
741 | writel(intinfo.count, | |
742 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
743 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
744 | ||
745 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
746 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
747 | & CFGTBL_ChangeReq)) | |
748 | break; | |
749 | /* delay and try again */ | |
750 | udelay(1000); | |
751 | } | |
752 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
753 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
754 | return -EAGAIN; | |
755 | return 0; | |
1da177e4 | 756 | } |
1da177e4 | 757 | case CCISS_GETNODENAME: |
7c832835 BH |
758 | { |
759 | NodeName_type NodeName; | |
760 | int i; | |
761 | ||
762 | if (!arg) | |
763 | return -EINVAL; | |
764 | for (i = 0; i < 16; i++) | |
765 | NodeName[i] = | |
766 | readb(&host->cfgtable->ServerName[i]); | |
767 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
768 | return -EFAULT; | |
769 | return 0; | |
770 | } | |
1da177e4 | 771 | case CCISS_SETNODENAME: |
7c832835 BH |
772 | { |
773 | NodeName_type NodeName; | |
774 | unsigned long flags; | |
775 | int i; | |
776 | ||
777 | if (!arg) | |
778 | return -EINVAL; | |
779 | if (!capable(CAP_SYS_ADMIN)) | |
780 | return -EPERM; | |
781 | ||
782 | if (copy_from_user | |
783 | (NodeName, argp, sizeof(NodeName_type))) | |
784 | return -EFAULT; | |
785 | ||
786 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
787 | ||
788 | /* Update the field, and then ring the doorbell */ | |
789 | for (i = 0; i < 16; i++) | |
790 | writeb(NodeName[i], | |
791 | &host->cfgtable->ServerName[i]); | |
792 | ||
793 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
794 | ||
795 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
796 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
797 | & CFGTBL_ChangeReq)) | |
798 | break; | |
799 | /* delay and try again */ | |
800 | udelay(1000); | |
801 | } | |
802 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
803 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
804 | return -EAGAIN; | |
805 | return 0; | |
806 | } | |
1da177e4 LT |
807 | |
808 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
809 | { |
810 | Heartbeat_type heartbeat; | |
811 | ||
812 | if (!arg) | |
813 | return -EINVAL; | |
814 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
815 | if (copy_to_user | |
816 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
817 | return -EFAULT; | |
818 | return 0; | |
819 | } | |
1da177e4 | 820 | case CCISS_GETBUSTYPES: |
7c832835 BH |
821 | { |
822 | BusTypes_type BusTypes; | |
823 | ||
824 | if (!arg) | |
825 | return -EINVAL; | |
826 | BusTypes = readl(&host->cfgtable->BusTypes); | |
827 | if (copy_to_user | |
828 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
829 | return -EFAULT; | |
830 | return 0; | |
831 | } | |
1da177e4 | 832 | case CCISS_GETFIRMVER: |
7c832835 BH |
833 | { |
834 | FirmwareVer_type firmware; | |
1da177e4 | 835 | |
7c832835 BH |
836 | if (!arg) |
837 | return -EINVAL; | |
838 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 839 | |
7c832835 BH |
840 | if (copy_to_user |
841 | (argp, firmware, sizeof(FirmwareVer_type))) | |
842 | return -EFAULT; | |
843 | return 0; | |
844 | } | |
845 | case CCISS_GETDRIVVER: | |
846 | { | |
847 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 848 | |
7c832835 BH |
849 | if (!arg) |
850 | return -EINVAL; | |
1da177e4 | 851 | |
7c832835 BH |
852 | if (copy_to_user |
853 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
854 | return -EFAULT; | |
855 | return 0; | |
856 | } | |
1da177e4 LT |
857 | |
858 | case CCISS_REVALIDVOLS: | |
3833a748 | 859 | return rebuild_lun_table(host, NULL); |
7c832835 BH |
860 | |
861 | case CCISS_GETLUNINFO:{ | |
862 | LogvolInfo_struct luninfo; | |
863 | ||
864 | luninfo.LunID = drv->LunID; | |
865 | luninfo.num_opens = drv->usage_count; | |
866 | luninfo.num_parts = 0; | |
867 | if (copy_to_user(argp, &luninfo, | |
868 | sizeof(LogvolInfo_struct))) | |
869 | return -EFAULT; | |
870 | return 0; | |
871 | } | |
1da177e4 | 872 | case CCISS_DEREGDISK: |
ddd47442 | 873 | return rebuild_lun_table(host, disk); |
1da177e4 LT |
874 | |
875 | case CCISS_REGNEWD: | |
ddd47442 | 876 | return rebuild_lun_table(host, NULL); |
1da177e4 LT |
877 | |
878 | case CCISS_PASSTHRU: | |
1da177e4 | 879 | { |
7c832835 BH |
880 | IOCTL_Command_struct iocommand; |
881 | CommandList_struct *c; | |
882 | char *buff = NULL; | |
883 | u64bit temp64; | |
884 | unsigned long flags; | |
6e9a4738 | 885 | DECLARE_COMPLETION_ONSTACK(wait); |
1da177e4 | 886 | |
7c832835 BH |
887 | if (!arg) |
888 | return -EINVAL; | |
1da177e4 | 889 | |
7c832835 BH |
890 | if (!capable(CAP_SYS_RAWIO)) |
891 | return -EPERM; | |
1da177e4 | 892 | |
7c832835 BH |
893 | if (copy_from_user |
894 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
895 | return -EFAULT; | |
896 | if ((iocommand.buf_size < 1) && | |
897 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
898 | return -EINVAL; | |
899 | } | |
900 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
901 | /* Check kmalloc limits */ | |
902 | if (iocommand.buf_size > 128000) | |
903 | return -EINVAL; | |
904 | #endif | |
905 | if (iocommand.buf_size > 0) { | |
906 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
907 | if (buff == NULL) | |
908 | return -EFAULT; | |
909 | } | |
910 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
911 | /* Copy the data into the buffer we created */ | |
912 | if (copy_from_user | |
913 | (buff, iocommand.buf, iocommand.buf_size)) { | |
914 | kfree(buff); | |
915 | return -EFAULT; | |
916 | } | |
917 | } else { | |
918 | memset(buff, 0, iocommand.buf_size); | |
919 | } | |
920 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
921 | kfree(buff); | |
922 | return -ENOMEM; | |
923 | } | |
924 | // Fill in the command type | |
925 | c->cmd_type = CMD_IOCTL_PEND; | |
926 | // Fill in Command Header | |
927 | c->Header.ReplyQueue = 0; // unused in simple mode | |
928 | if (iocommand.buf_size > 0) // buffer to fill | |
929 | { | |
930 | c->Header.SGList = 1; | |
931 | c->Header.SGTotal = 1; | |
932 | } else // no buffers to fill | |
933 | { | |
934 | c->Header.SGList = 0; | |
935 | c->Header.SGTotal = 0; | |
936 | } | |
937 | c->Header.LUN = iocommand.LUN_info; | |
938 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag | |
1da177e4 | 939 | |
7c832835 BH |
940 | // Fill in Request block |
941 | c->Request = iocommand.Request; | |
1da177e4 | 942 | |
7c832835 BH |
943 | // Fill in the scatter gather information |
944 | if (iocommand.buf_size > 0) { | |
945 | temp64.val = pci_map_single(host->pdev, buff, | |
946 | iocommand.buf_size, | |
947 | PCI_DMA_BIDIRECTIONAL); | |
948 | c->SG[0].Addr.lower = temp64.val32.lower; | |
949 | c->SG[0].Addr.upper = temp64.val32.upper; | |
950 | c->SG[0].Len = iocommand.buf_size; | |
951 | c->SG[0].Ext = 0; // we are not chaining | |
952 | } | |
953 | c->waiting = &wait; | |
954 | ||
955 | /* Put the request on the tail of the request queue */ | |
956 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
957 | addQ(&host->reqQ, c); | |
958 | host->Qdepth++; | |
959 | start_io(host); | |
960 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
961 | ||
962 | wait_for_completion(&wait); | |
963 | ||
964 | /* unlock the buffers from DMA */ | |
965 | temp64.val32.lower = c->SG[0].Addr.lower; | |
966 | temp64.val32.upper = c->SG[0].Addr.upper; | |
967 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
968 | iocommand.buf_size, | |
969 | PCI_DMA_BIDIRECTIONAL); | |
970 | ||
971 | /* Copy the error information out */ | |
972 | iocommand.error_info = *(c->err_info); | |
973 | if (copy_to_user | |
974 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
975 | kfree(buff); | |
1da177e4 LT |
976 | cmd_free(host, c, 0); |
977 | return -EFAULT; | |
978 | } | |
7c832835 BH |
979 | |
980 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
981 | /* Copy the data out of the buffer we created */ | |
982 | if (copy_to_user | |
983 | (iocommand.buf, buff, iocommand.buf_size)) { | |
984 | kfree(buff); | |
985 | cmd_free(host, c, 0); | |
986 | return -EFAULT; | |
987 | } | |
988 | } | |
989 | kfree(buff); | |
990 | cmd_free(host, c, 0); | |
991 | return 0; | |
1da177e4 | 992 | } |
7c832835 BH |
993 | case CCISS_BIG_PASSTHRU:{ |
994 | BIG_IOCTL_Command_struct *ioc; | |
995 | CommandList_struct *c; | |
996 | unsigned char **buff = NULL; | |
997 | int *buff_size = NULL; | |
998 | u64bit temp64; | |
999 | unsigned long flags; | |
1000 | BYTE sg_used = 0; | |
1001 | int status = 0; | |
1002 | int i; | |
6e9a4738 | 1003 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1004 | __u32 left; |
1005 | __u32 sz; | |
1006 | BYTE __user *data_ptr; | |
1007 | ||
1008 | if (!arg) | |
1009 | return -EINVAL; | |
1010 | if (!capable(CAP_SYS_RAWIO)) | |
1011 | return -EPERM; | |
1012 | ioc = (BIG_IOCTL_Command_struct *) | |
1013 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1014 | if (!ioc) { | |
1015 | status = -ENOMEM; | |
1016 | goto cleanup1; | |
1017 | } | |
1018 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1019 | status = -EFAULT; | |
1020 | goto cleanup1; | |
1021 | } | |
1022 | if ((ioc->buf_size < 1) && | |
1023 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1024 | status = -EINVAL; |
1025 | goto cleanup1; | |
7c832835 BH |
1026 | } |
1027 | /* Check kmalloc limits using all SGs */ | |
1028 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1029 | status = -EINVAL; | |
1030 | goto cleanup1; | |
1031 | } | |
1032 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1033 | status = -EINVAL; | |
1034 | goto cleanup1; | |
1035 | } | |
1036 | buff = | |
1037 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1038 | if (!buff) { | |
1da177e4 LT |
1039 | status = -ENOMEM; |
1040 | goto cleanup1; | |
1041 | } | |
5cbded58 | 1042 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
7c832835 BH |
1043 | GFP_KERNEL); |
1044 | if (!buff_size) { | |
1045 | status = -ENOMEM; | |
1046 | goto cleanup1; | |
1047 | } | |
1048 | left = ioc->buf_size; | |
1049 | data_ptr = ioc->buf; | |
1050 | while (left) { | |
1051 | sz = (left > | |
1052 | ioc->malloc_size) ? ioc-> | |
1053 | malloc_size : left; | |
1054 | buff_size[sg_used] = sz; | |
1055 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1056 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1057 | status = -ENOMEM; |
15534d38 JA |
1058 | goto cleanup1; |
1059 | } | |
7c832835 BH |
1060 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1061 | if (copy_from_user | |
1062 | (buff[sg_used], data_ptr, sz)) { | |
1063 | status = -ENOMEM; | |
1064 | goto cleanup1; | |
1065 | } | |
1066 | } else { | |
1067 | memset(buff[sg_used], 0, sz); | |
1068 | } | |
1069 | left -= sz; | |
1070 | data_ptr += sz; | |
1071 | sg_used++; | |
1072 | } | |
1073 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1074 | status = -ENOMEM; | |
1075 | goto cleanup1; | |
1076 | } | |
1077 | c->cmd_type = CMD_IOCTL_PEND; | |
1078 | c->Header.ReplyQueue = 0; | |
1079 | ||
1080 | if (ioc->buf_size > 0) { | |
1081 | c->Header.SGList = sg_used; | |
1082 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1083 | } else { |
7c832835 BH |
1084 | c->Header.SGList = 0; |
1085 | c->Header.SGTotal = 0; | |
1da177e4 | 1086 | } |
7c832835 BH |
1087 | c->Header.LUN = ioc->LUN_info; |
1088 | c->Header.Tag.lower = c->busaddr; | |
1089 | ||
1090 | c->Request = ioc->Request; | |
1091 | if (ioc->buf_size > 0) { | |
1092 | int i; | |
1093 | for (i = 0; i < sg_used; i++) { | |
1094 | temp64.val = | |
1095 | pci_map_single(host->pdev, buff[i], | |
1096 | buff_size[i], | |
1097 | PCI_DMA_BIDIRECTIONAL); | |
1098 | c->SG[i].Addr.lower = | |
1099 | temp64.val32.lower; | |
1100 | c->SG[i].Addr.upper = | |
1101 | temp64.val32.upper; | |
1102 | c->SG[i].Len = buff_size[i]; | |
1103 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1104 | } | |
1105 | } | |
1106 | c->waiting = &wait; | |
1107 | /* Put the request on the tail of the request queue */ | |
1108 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1109 | addQ(&host->reqQ, c); | |
1110 | host->Qdepth++; | |
1111 | start_io(host); | |
1112 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1113 | wait_for_completion(&wait); | |
1114 | /* unlock the buffers from DMA */ | |
1115 | for (i = 0; i < sg_used; i++) { | |
1116 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1117 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1118 | pci_unmap_single(host->pdev, | |
1119 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1120 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1121 | } |
7c832835 BH |
1122 | /* Copy the error information out */ |
1123 | ioc->error_info = *(c->err_info); | |
1124 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1125 | cmd_free(host, c, 0); | |
1126 | status = -EFAULT; | |
1127 | goto cleanup1; | |
1128 | } | |
1129 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1130 | /* Copy the data out of the buffer we created */ | |
1131 | BYTE __user *ptr = ioc->buf; | |
1132 | for (i = 0; i < sg_used; i++) { | |
1133 | if (copy_to_user | |
1134 | (ptr, buff[i], buff_size[i])) { | |
1135 | cmd_free(host, c, 0); | |
1136 | status = -EFAULT; | |
1137 | goto cleanup1; | |
1138 | } | |
1139 | ptr += buff_size[i]; | |
1da177e4 | 1140 | } |
1da177e4 | 1141 | } |
7c832835 BH |
1142 | cmd_free(host, c, 0); |
1143 | status = 0; | |
1144 | cleanup1: | |
1145 | if (buff) { | |
1146 | for (i = 0; i < sg_used; i++) | |
1147 | kfree(buff[i]); | |
1148 | kfree(buff); | |
1149 | } | |
1150 | kfree(buff_size); | |
1151 | kfree(ioc); | |
1152 | return status; | |
1da177e4 | 1153 | } |
1da177e4 LT |
1154 | default: |
1155 | return -ENOTTY; | |
1156 | } | |
1da177e4 LT |
1157 | } |
1158 | ||
ca1e0484 MM |
1159 | static inline void complete_buffers(struct bio *bio, int status) |
1160 | { | |
1161 | while (bio) { | |
1162 | struct bio *xbh = bio->bi_next; | |
1163 | int nr_sectors = bio_sectors(bio); | |
1164 | ||
1165 | bio->bi_next = NULL; | |
ca1e0484 MM |
1166 | bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO); |
1167 | bio = xbh; | |
1168 | } | |
ca1e0484 MM |
1169 | } |
1170 | ||
7b30f092 JA |
1171 | static void cciss_check_queues(ctlr_info_t *h) |
1172 | { | |
1173 | int start_queue = h->next_to_run; | |
1174 | int i; | |
1175 | ||
1176 | /* check to see if we have maxed out the number of commands that can | |
1177 | * be placed on the queue. If so then exit. We do this check here | |
1178 | * in case the interrupt we serviced was from an ioctl and did not | |
1179 | * free any new commands. | |
1180 | */ | |
f880632f | 1181 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1182 | return; |
1183 | ||
1184 | /* We have room on the queue for more commands. Now we need to queue | |
1185 | * them up. We will also keep track of the next queue to run so | |
1186 | * that every queue gets a chance to be started first. | |
1187 | */ | |
1188 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1189 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1190 | /* make sure the disk has been added and the drive is real | |
1191 | * because this can be called from the middle of init_one. | |
1192 | */ | |
1193 | if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads)) | |
1194 | continue; | |
1195 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1196 | ||
1197 | /* check to see if we have maxed out the number of commands | |
1198 | * that can be placed on the queue. | |
1199 | */ | |
f880632f | 1200 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1201 | if (curr_queue == start_queue) { |
1202 | h->next_to_run = | |
1203 | (start_queue + 1) % (h->highest_lun + 1); | |
1204 | break; | |
1205 | } else { | |
1206 | h->next_to_run = curr_queue; | |
1207 | break; | |
1208 | } | |
1209 | } else { | |
1210 | curr_queue = (curr_queue + 1) % (h->highest_lun + 1); | |
1211 | } | |
1212 | } | |
1213 | } | |
1214 | ||
ca1e0484 MM |
1215 | static void cciss_softirq_done(struct request *rq) |
1216 | { | |
1217 | CommandList_struct *cmd = rq->completion_data; | |
1218 | ctlr_info_t *h = hba[cmd->ctlr]; | |
1219 | unsigned long flags; | |
1220 | u64bit temp64; | |
1221 | int i, ddir; | |
1222 | ||
1223 | if (cmd->Request.Type.Direction == XFER_READ) | |
1224 | ddir = PCI_DMA_FROMDEVICE; | |
1225 | else | |
1226 | ddir = PCI_DMA_TODEVICE; | |
1227 | ||
1228 | /* command did not need to be retried */ | |
1229 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1230 | for (i = 0; i < cmd->Header.SGList; i++) { |
ca1e0484 MM |
1231 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
1232 | temp64.val32.upper = cmd->SG[i].Addr.upper; | |
1233 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); | |
1234 | } | |
1235 | ||
1236 | complete_buffers(rq->bio, rq->errors); | |
1237 | ||
b369c2cf JA |
1238 | if (blk_fs_request(rq)) { |
1239 | const int rw = rq_data_dir(rq); | |
1240 | ||
1241 | disk_stat_add(rq->rq_disk, sectors[rw], rq->nr_sectors); | |
1242 | } | |
1243 | ||
ca1e0484 MM |
1244 | #ifdef CCISS_DEBUG |
1245 | printk("Done with %p\n", rq); | |
7c832835 | 1246 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1247 | |
8bd0b97e | 1248 | add_disk_randomness(rq->rq_disk); |
ca1e0484 MM |
1249 | spin_lock_irqsave(&h->lock, flags); |
1250 | end_that_request_last(rq, rq->errors); | |
7c832835 | 1251 | cmd_free(h, cmd, 1); |
7b30f092 | 1252 | cciss_check_queues(h); |
ca1e0484 MM |
1253 | spin_unlock_irqrestore(&h->lock, flags); |
1254 | } | |
1255 | ||
ddd47442 MM |
1256 | /* This function will check the usage_count of the drive to be updated/added. |
1257 | * If the usage_count is zero then the drive information will be updated and | |
1258 | * the disk will be re-registered with the kernel. If not then it will be | |
1259 | * left alone for the next reboot. The exception to this is disk 0 which | |
1260 | * will always be left registered with the kernel since it is also the | |
1261 | * controller node. Any changes to disk 0 will show up on the next | |
1262 | * reboot. | |
7c832835 | 1263 | */ |
ddd47442 | 1264 | static void cciss_update_drive_info(int ctlr, int drv_index) |
7c832835 | 1265 | { |
ddd47442 MM |
1266 | ctlr_info_t *h = hba[ctlr]; |
1267 | struct gendisk *disk; | |
ddd47442 MM |
1268 | InquiryData_struct *inq_buff = NULL; |
1269 | unsigned int block_size; | |
00988a35 | 1270 | sector_t total_size; |
ddd47442 MM |
1271 | unsigned long flags = 0; |
1272 | int ret = 0; | |
1273 | ||
7c832835 BH |
1274 | /* if the disk already exists then deregister it before proceeding */ |
1275 | if (h->drv[drv_index].raid_level != -1) { | |
ddd47442 MM |
1276 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
1277 | h->drv[drv_index].busy_configuring = 1; | |
1278 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1279 | ret = deregister_disk(h->gendisk[drv_index], | |
7c832835 | 1280 | &h->drv[drv_index], 0); |
ddd47442 MM |
1281 | h->drv[drv_index].busy_configuring = 0; |
1282 | } | |
1283 | ||
1284 | /* If the disk is in use return */ | |
1285 | if (ret) | |
1286 | return; | |
1287 | ||
d14c4ab5 | 1288 | /* Get information about the disk and modify the driver structure */ |
7c832835 | 1289 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
ddd47442 MM |
1290 | if (inq_buff == NULL) |
1291 | goto mem_msg; | |
1292 | ||
00988a35 | 1293 | cciss_read_capacity(ctlr, drv_index, 1, |
7c832835 | 1294 | &total_size, &block_size); |
00988a35 MMOD |
1295 | |
1296 | /* total size = last LBA + 1 */ | |
1297 | /* FFFFFFFF + 1 = 0, cannot have a logical volume of size 0 */ | |
1298 | /* so we assume this volume this must be >2TB in size */ | |
1299 | if (total_size == (__u32) 0) { | |
1300 | cciss_read_capacity_16(ctlr, drv_index, 1, | |
1301 | &total_size, &block_size); | |
1302 | h->cciss_read = CCISS_READ_16; | |
1303 | h->cciss_write = CCISS_WRITE_16; | |
1304 | } else { | |
1305 | h->cciss_read = CCISS_READ_10; | |
1306 | h->cciss_write = CCISS_WRITE_10; | |
1307 | } | |
ddd47442 | 1308 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, |
7c832835 | 1309 | inq_buff, &h->drv[drv_index]); |
ddd47442 MM |
1310 | |
1311 | ++h->num_luns; | |
1312 | disk = h->gendisk[drv_index]; | |
1313 | set_capacity(disk, h->drv[drv_index].nr_blocks); | |
1314 | ||
ddd47442 | 1315 | /* if it's the controller it's already added */ |
7c832835 | 1316 | if (drv_index) { |
ddd47442 | 1317 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
799202cb MM |
1318 | sprintf(disk->disk_name, "cciss/c%dd%d", ctlr, drv_index); |
1319 | disk->major = h->major; | |
1320 | disk->first_minor = drv_index << NWD_SHIFT; | |
1321 | disk->fops = &cciss_fops; | |
1322 | disk->private_data = &h->drv[drv_index]; | |
ddd47442 MM |
1323 | |
1324 | /* Set up queue information */ | |
1325 | disk->queue->backing_dev_info.ra_pages = READ_AHEAD; | |
1326 | blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask); | |
1327 | ||
1328 | /* This is a hardware imposed limit. */ | |
1329 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); | |
1330 | ||
1331 | /* This is a limit in the driver and could be eliminated. */ | |
1332 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); | |
1333 | ||
92c4231a | 1334 | blk_queue_max_sectors(disk->queue, h->cciss_max_sectors); |
ddd47442 | 1335 | |
ca1e0484 MM |
1336 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
1337 | ||
ddd47442 MM |
1338 | disk->queue->queuedata = hba[ctlr]; |
1339 | ||
1340 | blk_queue_hardsect_size(disk->queue, | |
7c832835 | 1341 | hba[ctlr]->drv[drv_index].block_size); |
ddd47442 MM |
1342 | |
1343 | h->drv[drv_index].queue = disk->queue; | |
1344 | add_disk(disk); | |
1345 | } | |
1346 | ||
7c832835 | 1347 | freeret: |
ddd47442 MM |
1348 | kfree(inq_buff); |
1349 | return; | |
7c832835 | 1350 | mem_msg: |
ddd47442 MM |
1351 | printk(KERN_ERR "cciss: out of memory\n"); |
1352 | goto freeret; | |
1353 | } | |
1354 | ||
1355 | /* This function will find the first index of the controllers drive array | |
1356 | * that has a -1 for the raid_level and will return that index. This is | |
1357 | * where new drives will be added. If the index to be returned is greater | |
1358 | * than the highest_lun index for the controller then highest_lun is set | |
1359 | * to this new index. If there are no available indexes then -1 is returned. | |
7c832835 | 1360 | */ |
ddd47442 MM |
1361 | static int cciss_find_free_drive_index(int ctlr) |
1362 | { | |
1363 | int i; | |
1364 | ||
7c832835 BH |
1365 | for (i = 0; i < CISS_MAX_LUN; i++) { |
1366 | if (hba[ctlr]->drv[i].raid_level == -1) { | |
ddd47442 MM |
1367 | if (i > hba[ctlr]->highest_lun) |
1368 | hba[ctlr]->highest_lun = i; | |
1369 | return i; | |
1370 | } | |
1371 | } | |
1372 | return -1; | |
1373 | } | |
1374 | ||
1375 | /* This function will add and remove logical drives from the Logical | |
d14c4ab5 | 1376 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
1377 | * so that mount points are preserved until the next reboot. This allows |
1378 | * for the removal of logical drives in the middle of the drive array | |
1379 | * without a re-ordering of those drives. | |
1380 | * INPUT | |
1381 | * h = The controller to perform the operations on | |
1382 | * del_disk = The disk to remove if specified. If the value given | |
1383 | * is NULL then no disk is removed. | |
7c832835 | 1384 | */ |
ddd47442 | 1385 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk) |
1da177e4 | 1386 | { |
ddd47442 MM |
1387 | int ctlr = h->ctlr; |
1388 | int num_luns; | |
1389 | ReportLunData_struct *ld_buff = NULL; | |
1390 | drive_info_struct *drv = NULL; | |
1391 | int return_code; | |
1392 | int listlength = 0; | |
1393 | int i; | |
1394 | int drv_found; | |
1395 | int drv_index = 0; | |
1396 | __u32 lunid = 0; | |
1da177e4 | 1397 | unsigned long flags; |
ddd47442 MM |
1398 | |
1399 | /* Set busy_configuring flag for this operation */ | |
1400 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 1401 | if (h->busy_configuring) { |
ddd47442 MM |
1402 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
1403 | return -EBUSY; | |
1404 | } | |
1405 | h->busy_configuring = 1; | |
1406 | ||
1407 | /* if del_disk is NULL then we are being called to add a new disk | |
1408 | * and update the logical drive table. If it is not NULL then | |
1409 | * we will check if the disk is in use or not. | |
1410 | */ | |
7c832835 | 1411 | if (del_disk != NULL) { |
ddd47442 MM |
1412 | drv = get_drv(del_disk); |
1413 | drv->busy_configuring = 1; | |
1414 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1415 | return_code = deregister_disk(del_disk, drv, 1); | |
1416 | drv->busy_configuring = 0; | |
1417 | h->busy_configuring = 0; | |
1418 | return return_code; | |
1419 | } else { | |
1420 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1421 | if (!capable(CAP_SYS_RAWIO)) | |
1422 | return -EPERM; | |
1423 | ||
1424 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); | |
1425 | if (ld_buff == NULL) | |
1426 | goto mem_msg; | |
1427 | ||
1428 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
7c832835 BH |
1429 | sizeof(ReportLunData_struct), 0, |
1430 | 0, 0, TYPE_CMD); | |
1431 | ||
1432 | if (return_code == IO_OK) { | |
799202cb MM |
1433 | listlength = |
1434 | be32_to_cpu(*(__u32 *) ld_buff->LUNListLength); | |
7c832835 | 1435 | } else { /* reading number of logical volumes failed */ |
ddd47442 | 1436 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 1437 | " command failed\n"); |
ddd47442 MM |
1438 | listlength = 0; |
1439 | goto freeret; | |
1440 | } | |
1441 | ||
1442 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
7c832835 | 1443 | if (num_luns > CISS_MAX_LUN) { |
ddd47442 MM |
1444 | num_luns = CISS_MAX_LUN; |
1445 | printk(KERN_WARNING "cciss: more luns configured" | |
7c832835 BH |
1446 | " on controller than can be handled by" |
1447 | " this driver.\n"); | |
ddd47442 MM |
1448 | } |
1449 | ||
1450 | /* Compare controller drive array to drivers drive array. | |
7c832835 BH |
1451 | * Check for updates in the drive information and any new drives |
1452 | * on the controller. | |
1453 | */ | |
1454 | for (i = 0; i < num_luns; i++) { | |
ddd47442 MM |
1455 | int j; |
1456 | ||
1457 | drv_found = 0; | |
1458 | ||
7c832835 BH |
1459 | lunid = (0xff & |
1460 | (unsigned int)(ld_buff->LUN[i][3])) << 24; | |
1461 | lunid |= (0xff & | |
1462 | (unsigned int)(ld_buff->LUN[i][2])) << 16; | |
1463 | lunid |= (0xff & | |
1464 | (unsigned int)(ld_buff->LUN[i][1])) << 8; | |
1465 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
ddd47442 MM |
1466 | |
1467 | /* Find if the LUN is already in the drive array | |
1468 | * of the controller. If so then update its info | |
1469 | * if not is use. If it does not exist then find | |
1470 | * the first free index and add it. | |
7c832835 BH |
1471 | */ |
1472 | for (j = 0; j <= h->highest_lun; j++) { | |
1473 | if (h->drv[j].LunID == lunid) { | |
ddd47442 MM |
1474 | drv_index = j; |
1475 | drv_found = 1; | |
1476 | } | |
1477 | } | |
1478 | ||
1479 | /* check if the drive was found already in the array */ | |
7c832835 | 1480 | if (!drv_found) { |
ddd47442 MM |
1481 | drv_index = cciss_find_free_drive_index(ctlr); |
1482 | if (drv_index == -1) | |
1483 | goto freeret; | |
1484 | ||
799202cb MM |
1485 | /*Check if the gendisk needs to be allocated */ |
1486 | if (!h->gendisk[drv_index]){ | |
1487 | h->gendisk[drv_index] = alloc_disk(1 << NWD_SHIFT); | |
1488 | if (!h->gendisk[drv_index]){ | |
1489 | printk(KERN_ERR "cciss: could not allocate new disk %d\n", drv_index); | |
1490 | goto mem_msg; | |
1491 | } | |
1492 | } | |
ddd47442 MM |
1493 | } |
1494 | h->drv[drv_index].LunID = lunid; | |
1495 | cciss_update_drive_info(ctlr, drv_index); | |
7c832835 BH |
1496 | } /* end for */ |
1497 | } /* end else */ | |
ddd47442 | 1498 | |
7c832835 | 1499 | freeret: |
ddd47442 MM |
1500 | kfree(ld_buff); |
1501 | h->busy_configuring = 0; | |
1502 | /* We return -1 here to tell the ACU that we have registered/updated | |
1503 | * all of the drives that we can and to keep it from calling us | |
1504 | * additional times. | |
7c832835 | 1505 | */ |
ddd47442 | 1506 | return -1; |
7c832835 | 1507 | mem_msg: |
ddd47442 MM |
1508 | printk(KERN_ERR "cciss: out of memory\n"); |
1509 | goto freeret; | |
1510 | } | |
1511 | ||
1512 | /* This function will deregister the disk and it's queue from the | |
1513 | * kernel. It must be called with the controller lock held and the | |
1514 | * drv structures busy_configuring flag set. It's parameters are: | |
1515 | * | |
1516 | * disk = This is the disk to be deregistered | |
1517 | * drv = This is the drive_info_struct associated with the disk to be | |
1518 | * deregistered. It contains information about the disk used | |
1519 | * by the driver. | |
1520 | * clear_all = This flag determines whether or not the disk information | |
1521 | * is going to be completely cleared out and the highest_lun | |
1522 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 1523 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
1524 | * the highest_lun should be left unchanged and the LunID |
1525 | * should not be cleared. | |
1526 | */ | |
1527 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, | |
1528 | int clear_all) | |
1529 | { | |
799202cb | 1530 | int i; |
1da177e4 | 1531 | ctlr_info_t *h = get_host(disk); |
1da177e4 LT |
1532 | |
1533 | if (!capable(CAP_SYS_RAWIO)) | |
1534 | return -EPERM; | |
1535 | ||
1da177e4 | 1536 | /* make sure logical volume is NOT is use */ |
7c832835 BH |
1537 | if (clear_all || (h->gendisk[0] == disk)) { |
1538 | if (drv->usage_count > 1) | |
1539 | return -EBUSY; | |
1540 | } else if (drv->usage_count > 0) | |
1541 | return -EBUSY; | |
1da177e4 | 1542 | |
ddd47442 MM |
1543 | /* invalidate the devices and deregister the disk. If it is disk |
1544 | * zero do not deregister it but just zero out it's values. This | |
1545 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
1546 | */ |
1547 | if (h->gendisk[0] != disk) { | |
6f5a0f7c | 1548 | if (disk) { |
1549 | request_queue_t *q = disk->queue; | |
1550 | if (disk->flags & GENHD_FL_UP) | |
1551 | del_gendisk(disk); | |
2f6331fa | 1552 | if (q) { |
6f5a0f7c | 1553 | blk_cleanup_queue(q); |
799202cb MM |
1554 | /* Set drv->queue to NULL so that we do not try |
1555 | * to call blk_start_queue on this queue in the | |
1556 | * interrupt handler | |
1557 | */ | |
2f6331fa MM |
1558 | drv->queue = NULL; |
1559 | } | |
799202cb MM |
1560 | /* If clear_all is set then we are deleting the logical |
1561 | * drive, not just refreshing its info. For drives | |
1562 | * other than disk 0 we will call put_disk. We do not | |
1563 | * do this for disk 0 as we need it to be able to | |
1564 | * configure the controller. | |
1565 | */ | |
1566 | if (clear_all){ | |
1567 | /* This isn't pretty, but we need to find the | |
1568 | * disk in our array and NULL our the pointer. | |
1569 | * This is so that we will call alloc_disk if | |
1570 | * this index is used again later. | |
1571 | */ | |
1572 | for (i=0; i < CISS_MAX_LUN; i++){ | |
1573 | if(h->gendisk[i] == disk){ | |
1574 | h->gendisk[i] = NULL; | |
1575 | break; | |
1576 | } | |
1577 | } | |
1578 | put_disk(disk); | |
1579 | } | |
ddd47442 | 1580 | } |
799202cb MM |
1581 | } else { |
1582 | set_capacity(disk, 0); | |
ddd47442 MM |
1583 | } |
1584 | ||
1585 | --h->num_luns; | |
1586 | /* zero out the disk size info */ | |
1587 | drv->nr_blocks = 0; | |
1588 | drv->block_size = 0; | |
1589 | drv->heads = 0; | |
1590 | drv->sectors = 0; | |
1591 | drv->cylinders = 0; | |
1592 | drv->raid_level = -1; /* This can be used as a flag variable to | |
1593 | * indicate that this element of the drive | |
1594 | * array is free. | |
7c832835 BH |
1595 | */ |
1596 | ||
1597 | if (clear_all) { | |
1598 | /* check to see if it was the last disk */ | |
1599 | if (drv == h->drv + h->highest_lun) { | |
1600 | /* if so, find the new hightest lun */ | |
1601 | int i, newhighest = -1; | |
1602 | for (i = 0; i < h->highest_lun; i++) { | |
1603 | /* if the disk has size > 0, it is available */ | |
ddd47442 | 1604 | if (h->drv[i].heads) |
7c832835 BH |
1605 | newhighest = i; |
1606 | } | |
1607 | h->highest_lun = newhighest; | |
1da177e4 | 1608 | } |
ddd47442 | 1609 | |
7c832835 | 1610 | drv->LunID = 0; |
ddd47442 | 1611 | } |
e2019b58 | 1612 | return 0; |
1da177e4 | 1613 | } |
ddd47442 | 1614 | |
7c832835 BH |
1615 | 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, |
1616 | 1: address logical volume log_unit, | |
1617 | 2: periph device address is scsi3addr */ | |
1618 | unsigned int log_unit, __u8 page_code, | |
1619 | unsigned char *scsi3addr, int cmd_type) | |
1da177e4 | 1620 | { |
7c832835 | 1621 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
1622 | u64bit buff_dma_handle; |
1623 | int status = IO_OK; | |
1624 | ||
1625 | c->cmd_type = CMD_IOCTL_PEND; | |
1626 | c->Header.ReplyQueue = 0; | |
7c832835 | 1627 | if (buff != NULL) { |
1da177e4 | 1628 | c->Header.SGList = 1; |
7c832835 | 1629 | c->Header.SGTotal = 1; |
1da177e4 LT |
1630 | } else { |
1631 | c->Header.SGList = 0; | |
7c832835 | 1632 | c->Header.SGTotal = 0; |
1da177e4 LT |
1633 | } |
1634 | c->Header.Tag.lower = c->busaddr; | |
1635 | ||
1636 | c->Request.Type.Type = cmd_type; | |
1637 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
1638 | switch (cmd) { |
1639 | case CISS_INQUIRY: | |
1da177e4 | 1640 | /* If the logical unit number is 0 then, this is going |
7c832835 BH |
1641 | to controller so It's a physical command |
1642 | mode = 0 target = 0. So we have nothing to write. | |
1643 | otherwise, if use_unit_num == 1, | |
1644 | mode = 1(volume set addressing) target = LUNID | |
1645 | otherwise, if use_unit_num == 2, | |
1646 | mode = 0(periph dev addr) target = scsi3addr */ | |
1da177e4 | 1647 | if (use_unit_num == 1) { |
7c832835 BH |
1648 | c->Header.LUN.LogDev.VolId = |
1649 | h->drv[log_unit].LunID; | |
1650 | c->Header.LUN.LogDev.Mode = 1; | |
1da177e4 | 1651 | } else if (use_unit_num == 2) { |
7c832835 BH |
1652 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, |
1653 | 8); | |
1da177e4 LT |
1654 | c->Header.LUN.LogDev.Mode = 0; |
1655 | } | |
1656 | /* are we trying to read a vital product page */ | |
7c832835 | 1657 | if (page_code != 0) { |
1da177e4 LT |
1658 | c->Request.CDB[1] = 0x01; |
1659 | c->Request.CDB[2] = page_code; | |
1660 | } | |
1661 | c->Request.CDBLen = 6; | |
7c832835 | 1662 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
1663 | c->Request.Type.Direction = XFER_READ; |
1664 | c->Request.Timeout = 0; | |
7c832835 BH |
1665 | c->Request.CDB[0] = CISS_INQUIRY; |
1666 | c->Request.CDB[4] = size & 0xFF; | |
1667 | break; | |
1da177e4 LT |
1668 | case CISS_REPORT_LOG: |
1669 | case CISS_REPORT_PHYS: | |
7c832835 | 1670 | /* Talking to controller so It's a physical command |
1da177e4 | 1671 | mode = 00 target = 0. Nothing to write. |
7c832835 | 1672 | */ |
1da177e4 LT |
1673 | c->Request.CDBLen = 12; |
1674 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1675 | c->Request.Type.Direction = XFER_READ; | |
1676 | c->Request.Timeout = 0; | |
1677 | c->Request.CDB[0] = cmd; | |
7c832835 | 1678 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
1da177e4 LT |
1679 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
1680 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
1681 | c->Request.CDB[9] = size & 0xFF; | |
1682 | break; | |
1683 | ||
1684 | case CCISS_READ_CAPACITY: | |
1685 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1686 | c->Header.LUN.LogDev.Mode = 1; | |
1687 | c->Request.CDBLen = 10; | |
1688 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1689 | c->Request.Type.Direction = XFER_READ; | |
1690 | c->Request.Timeout = 0; | |
1691 | c->Request.CDB[0] = cmd; | |
7c832835 | 1692 | break; |
00988a35 MMOD |
1693 | case CCISS_READ_CAPACITY_16: |
1694 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1695 | c->Header.LUN.LogDev.Mode = 1; | |
1696 | c->Request.CDBLen = 16; | |
1697 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1698 | c->Request.Type.Direction = XFER_READ; | |
1699 | c->Request.Timeout = 0; | |
1700 | c->Request.CDB[0] = cmd; | |
1701 | c->Request.CDB[1] = 0x10; | |
1702 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
1703 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
1704 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
1705 | c->Request.CDB[13] = size & 0xFF; | |
1706 | c->Request.Timeout = 0; | |
1707 | c->Request.CDB[0] = cmd; | |
1708 | break; | |
1da177e4 LT |
1709 | case CCISS_CACHE_FLUSH: |
1710 | c->Request.CDBLen = 12; | |
1711 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1712 | c->Request.Type.Direction = XFER_WRITE; | |
1713 | c->Request.Timeout = 0; | |
1714 | c->Request.CDB[0] = BMIC_WRITE; | |
1715 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 1716 | break; |
1da177e4 LT |
1717 | default: |
1718 | printk(KERN_WARNING | |
7c832835 | 1719 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 1720 | return IO_ERROR; |
1da177e4 LT |
1721 | } |
1722 | } else if (cmd_type == TYPE_MSG) { | |
1723 | switch (cmd) { | |
7c832835 | 1724 | case 0: /* ABORT message */ |
3da8b713 | 1725 | c->Request.CDBLen = 12; |
1726 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1727 | c->Request.Type.Direction = XFER_WRITE; | |
1728 | c->Request.Timeout = 0; | |
7c832835 BH |
1729 | c->Request.CDB[0] = cmd; /* abort */ |
1730 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 1731 | /* buff contains the tag of the command to abort */ |
1732 | memcpy(&c->Request.CDB[4], buff, 8); | |
1733 | break; | |
7c832835 | 1734 | case 1: /* RESET message */ |
3da8b713 | 1735 | c->Request.CDBLen = 12; |
1736 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1737 | c->Request.Type.Direction = XFER_WRITE; | |
1738 | c->Request.Timeout = 0; | |
1739 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 BH |
1740 | c->Request.CDB[0] = cmd; /* reset */ |
1741 | c->Request.CDB[1] = 0x04; /* reset a LUN */ | |
00988a35 | 1742 | break; |
1da177e4 LT |
1743 | case 3: /* No-Op message */ |
1744 | c->Request.CDBLen = 1; | |
1745 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1746 | c->Request.Type.Direction = XFER_WRITE; | |
1747 | c->Request.Timeout = 0; | |
1748 | c->Request.CDB[0] = cmd; | |
1749 | break; | |
1750 | default: | |
1751 | printk(KERN_WARNING | |
7c832835 | 1752 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
1753 | return IO_ERROR; |
1754 | } | |
1755 | } else { | |
1756 | printk(KERN_WARNING | |
7c832835 | 1757 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
1758 | return IO_ERROR; |
1759 | } | |
1760 | /* Fill in the scatter gather information */ | |
1761 | if (size > 0) { | |
1762 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
1763 | buff, size, |
1764 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
1765 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
1766 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
1767 | c->SG[0].Len = size; | |
7c832835 | 1768 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
1769 | } |
1770 | return status; | |
1771 | } | |
7c832835 BH |
1772 | |
1773 | static int sendcmd_withirq(__u8 cmd, | |
1774 | int ctlr, | |
1775 | void *buff, | |
1776 | size_t size, | |
1777 | unsigned int use_unit_num, | |
1778 | unsigned int log_unit, __u8 page_code, int cmd_type) | |
1da177e4 LT |
1779 | { |
1780 | ctlr_info_t *h = hba[ctlr]; | |
1781 | CommandList_struct *c; | |
7c832835 | 1782 | u64bit buff_dma_handle; |
1da177e4 LT |
1783 | unsigned long flags; |
1784 | int return_status; | |
6e9a4738 | 1785 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1786 | |
1787 | if ((c = cmd_alloc(h, 0)) == NULL) | |
1da177e4 LT |
1788 | return -ENOMEM; |
1789 | return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 1790 | log_unit, page_code, NULL, cmd_type); |
1da177e4 LT |
1791 | if (return_status != IO_OK) { |
1792 | cmd_free(h, c, 0); | |
1793 | return return_status; | |
1794 | } | |
7c832835 | 1795 | resend_cmd2: |
1da177e4 | 1796 | c->waiting = &wait; |
7c832835 | 1797 | |
1da177e4 LT |
1798 | /* Put the request on the tail of the queue and send it */ |
1799 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1800 | addQ(&h->reqQ, c); | |
1801 | h->Qdepth++; | |
1802 | start_io(h); | |
1803 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 1804 | |
1da177e4 LT |
1805 | wait_for_completion(&wait); |
1806 | ||
7c832835 BH |
1807 | if (c->err_info->CommandStatus != 0) { /* an error has occurred */ |
1808 | switch (c->err_info->CommandStatus) { | |
1809 | case CMD_TARGET_STATUS: | |
1810 | printk(KERN_WARNING "cciss: cmd %p has " | |
1811 | " completed with errors\n", c); | |
1812 | if (c->err_info->ScsiStatus) { | |
1813 | printk(KERN_WARNING "cciss: cmd %p " | |
1814 | "has SCSI Status = %x\n", | |
1815 | c, c->err_info->ScsiStatus); | |
1816 | } | |
1da177e4 LT |
1817 | |
1818 | break; | |
7c832835 BH |
1819 | case CMD_DATA_UNDERRUN: |
1820 | case CMD_DATA_OVERRUN: | |
1da177e4 LT |
1821 | /* expected for inquire and report lun commands */ |
1822 | break; | |
7c832835 BH |
1823 | case CMD_INVALID: |
1824 | printk(KERN_WARNING "cciss: Cmd %p is " | |
1825 | "reported invalid\n", c); | |
1826 | return_status = IO_ERROR; | |
1da177e4 | 1827 | break; |
7c832835 BH |
1828 | case CMD_PROTOCOL_ERR: |
1829 | printk(KERN_WARNING "cciss: cmd %p has " | |
1830 | "protocol error \n", c); | |
1831 | return_status = IO_ERROR; | |
1da177e4 | 1832 | break; |
7c832835 BH |
1833 | case CMD_HARDWARE_ERR: |
1834 | printk(KERN_WARNING "cciss: cmd %p had " | |
1835 | " hardware error\n", c); | |
1836 | return_status = IO_ERROR; | |
1da177e4 | 1837 | break; |
7c832835 BH |
1838 | case CMD_CONNECTION_LOST: |
1839 | printk(KERN_WARNING "cciss: cmd %p had " | |
1840 | "connection lost\n", c); | |
1841 | return_status = IO_ERROR; | |
1da177e4 | 1842 | break; |
7c832835 BH |
1843 | case CMD_ABORTED: |
1844 | printk(KERN_WARNING "cciss: cmd %p was " | |
1845 | "aborted\n", c); | |
1846 | return_status = IO_ERROR; | |
1da177e4 | 1847 | break; |
7c832835 BH |
1848 | case CMD_ABORT_FAILED: |
1849 | printk(KERN_WARNING "cciss: cmd %p reports " | |
1850 | "abort failed\n", c); | |
1851 | return_status = IO_ERROR; | |
1852 | break; | |
1853 | case CMD_UNSOLICITED_ABORT: | |
1854 | printk(KERN_WARNING | |
1855 | "cciss%d: unsolicited abort %p\n", ctlr, c); | |
1856 | if (c->retry_count < MAX_CMD_RETRIES) { | |
1857 | printk(KERN_WARNING | |
1858 | "cciss%d: retrying %p\n", ctlr, c); | |
1859 | c->retry_count++; | |
1860 | /* erase the old error information */ | |
1861 | memset(c->err_info, 0, | |
1862 | sizeof(ErrorInfo_struct)); | |
1863 | return_status = IO_OK; | |
1864 | INIT_COMPLETION(wait); | |
1865 | goto resend_cmd2; | |
1866 | } | |
1867 | return_status = IO_ERROR; | |
1868 | break; | |
1869 | default: | |
1870 | printk(KERN_WARNING "cciss: cmd %p returned " | |
1871 | "unknown status %x\n", c, | |
1872 | c->err_info->CommandStatus); | |
1873 | return_status = IO_ERROR; | |
1da177e4 | 1874 | } |
7c832835 | 1875 | } |
1da177e4 | 1876 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
1877 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
1878 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
1879 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
1880 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
1da177e4 | 1881 | cmd_free(h, c, 0); |
7c832835 | 1882 | return return_status; |
1da177e4 | 1883 | } |
7c832835 | 1884 | |
1da177e4 | 1885 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
00988a35 | 1886 | int withirq, sector_t total_size, |
7c832835 BH |
1887 | unsigned int block_size, |
1888 | InquiryData_struct *inq_buff, | |
1889 | drive_info_struct *drv) | |
1da177e4 LT |
1890 | { |
1891 | int return_code; | |
00988a35 | 1892 | unsigned long t; |
00988a35 | 1893 | |
1da177e4 LT |
1894 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
1895 | if (withirq) | |
1896 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, | |
7c832835 BH |
1897 | inq_buff, sizeof(*inq_buff), 1, |
1898 | logvol, 0xC1, TYPE_CMD); | |
1da177e4 LT |
1899 | else |
1900 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, | |
7c832835 BH |
1901 | sizeof(*inq_buff), 1, logvol, 0xC1, NULL, |
1902 | TYPE_CMD); | |
1da177e4 | 1903 | if (return_code == IO_OK) { |
7c832835 | 1904 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 1905 | printk(KERN_WARNING |
7c832835 BH |
1906 | "cciss: reading geometry failed, volume " |
1907 | "does not support reading geometry\n"); | |
1da177e4 | 1908 | drv->heads = 255; |
7c832835 | 1909 | drv->sectors = 32; // Sectors per track |
1da177e4 | 1910 | } else { |
1da177e4 LT |
1911 | drv->heads = inq_buff->data_byte[6]; |
1912 | drv->sectors = inq_buff->data_byte[7]; | |
1913 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
1914 | drv->cylinders += inq_buff->data_byte[5]; | |
1915 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
1916 | } |
1917 | drv->block_size = block_size; | |
1918 | drv->nr_blocks = total_size; | |
1919 | t = drv->heads * drv->sectors; | |
1920 | if (t > 1) { | |
1921 | unsigned rem = sector_div(total_size, t); | |
1922 | if (rem) | |
1923 | total_size++; | |
1924 | drv->cylinders = total_size; | |
1da177e4 | 1925 | } |
7c832835 | 1926 | } else { /* Get geometry failed */ |
1da177e4 LT |
1927 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
1928 | } | |
cc088d10 | 1929 | printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n", |
7c832835 | 1930 | drv->heads, drv->sectors, drv->cylinders); |
1da177e4 | 1931 | } |
7c832835 | 1932 | |
1da177e4 | 1933 | static void |
00988a35 | 1934 | cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size, |
7c832835 | 1935 | unsigned int *block_size) |
1da177e4 | 1936 | { |
00988a35 | 1937 | ReadCapdata_struct *buf; |
1da177e4 | 1938 | int return_code; |
00988a35 MMOD |
1939 | buf = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); |
1940 | if (buf == NULL) { | |
1941 | printk(KERN_WARNING "cciss: out of memory\n"); | |
1942 | return; | |
1943 | } | |
1944 | memset(buf, 0, sizeof(ReadCapdata_struct)); | |
1da177e4 LT |
1945 | if (withirq) |
1946 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
1947 | ctlr, buf, sizeof(ReadCapdata_struct), |
1948 | 1, logvol, 0, TYPE_CMD); | |
1da177e4 LT |
1949 | else |
1950 | return_code = sendcmd(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
1951 | ctlr, buf, sizeof(ReadCapdata_struct), |
1952 | 1, logvol, 0, NULL, TYPE_CMD); | |
1da177e4 | 1953 | if (return_code == IO_OK) { |
00988a35 MMOD |
1954 | *total_size = be32_to_cpu(*(__u32 *) buf->total_size)+1; |
1955 | *block_size = be32_to_cpu(*(__u32 *) buf->block_size); | |
7c832835 | 1956 | } else { /* read capacity command failed */ |
1da177e4 LT |
1957 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
1958 | *total_size = 0; | |
1959 | *block_size = BLOCK_SIZE; | |
1960 | } | |
00988a35 | 1961 | if (*total_size != (__u32) 0) |
7b92aadf RD |
1962 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
1963 | (unsigned long long)*total_size, *block_size); | |
00988a35 MMOD |
1964 | kfree(buf); |
1965 | return; | |
1966 | } | |
1967 | ||
1968 | static void | |
1969 | cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) | |
1970 | { | |
1971 | ReadCapdata_struct_16 *buf; | |
1972 | int return_code; | |
1973 | buf = kmalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
1974 | if (buf == NULL) { | |
1975 | printk(KERN_WARNING "cciss: out of memory\n"); | |
1976 | return; | |
1977 | } | |
1978 | memset(buf, 0, sizeof(ReadCapdata_struct_16)); | |
1979 | if (withirq) { | |
1980 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, | |
1981 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
1982 | 1, logvol, 0, TYPE_CMD); | |
1983 | } | |
1984 | else { | |
1985 | return_code = sendcmd(CCISS_READ_CAPACITY_16, | |
1986 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
1987 | 1, logvol, 0, NULL, TYPE_CMD); | |
1988 | } | |
1989 | if (return_code == IO_OK) { | |
1990 | *total_size = be64_to_cpu(*(__u64 *) buf->total_size)+1; | |
1991 | *block_size = be32_to_cpu(*(__u32 *) buf->block_size); | |
1992 | } else { /* read capacity command failed */ | |
1993 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
1994 | *total_size = 0; | |
1995 | *block_size = BLOCK_SIZE; | |
1996 | } | |
7b92aadf RD |
1997 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
1998 | (unsigned long long)*total_size, *block_size); | |
00988a35 | 1999 | kfree(buf); |
1da177e4 LT |
2000 | return; |
2001 | } | |
2002 | ||
1da177e4 LT |
2003 | static int cciss_revalidate(struct gendisk *disk) |
2004 | { | |
2005 | ctlr_info_t *h = get_host(disk); | |
2006 | drive_info_struct *drv = get_drv(disk); | |
2007 | int logvol; | |
7c832835 | 2008 | int FOUND = 0; |
1da177e4 | 2009 | unsigned int block_size; |
00988a35 | 2010 | sector_t total_size; |
1da177e4 LT |
2011 | InquiryData_struct *inq_buff = NULL; |
2012 | ||
7c832835 BH |
2013 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
2014 | if (h->drv[logvol].LunID == drv->LunID) { | |
2015 | FOUND = 1; | |
1da177e4 LT |
2016 | break; |
2017 | } | |
2018 | } | |
2019 | ||
7c832835 BH |
2020 | if (!FOUND) |
2021 | return 1; | |
1da177e4 | 2022 | |
7c832835 BH |
2023 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2024 | if (inq_buff == NULL) { | |
2025 | printk(KERN_WARNING "cciss: out of memory\n"); | |
7c832835 BH |
2026 | return 1; |
2027 | } | |
00988a35 MMOD |
2028 | if (h->cciss_read == CCISS_READ_10) { |
2029 | cciss_read_capacity(h->ctlr, logvol, 1, | |
2030 | &total_size, &block_size); | |
2031 | } else { | |
2032 | cciss_read_capacity_16(h->ctlr, logvol, 1, | |
2033 | &total_size, &block_size); | |
2034 | } | |
7c832835 BH |
2035 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, |
2036 | inq_buff, drv); | |
1da177e4 | 2037 | |
ad2b9312 | 2038 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
1da177e4 LT |
2039 | set_capacity(disk, drv->nr_blocks); |
2040 | ||
1da177e4 LT |
2041 | kfree(inq_buff); |
2042 | return 0; | |
2043 | } | |
2044 | ||
2045 | /* | |
2046 | * Wait polling for a command to complete. | |
2047 | * The memory mapped FIFO is polled for the completion. | |
2048 | * Used only at init time, interrupts from the HBA are disabled. | |
2049 | */ | |
2050 | static unsigned long pollcomplete(int ctlr) | |
2051 | { | |
2052 | unsigned long done; | |
2053 | int i; | |
2054 | ||
2055 | /* Wait (up to 20 seconds) for a command to complete */ | |
2056 | ||
2057 | for (i = 20 * HZ; i > 0; i--) { | |
2058 | done = hba[ctlr]->access.command_completed(hba[ctlr]); | |
86e84862 NA |
2059 | if (done == FIFO_EMPTY) |
2060 | schedule_timeout_uninterruptible(1); | |
2061 | else | |
e2019b58 | 2062 | return done; |
1da177e4 LT |
2063 | } |
2064 | /* Invalid address to tell caller we ran out of time */ | |
2065 | return 1; | |
2066 | } | |
3da8b713 | 2067 | |
2068 | static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) | |
2069 | { | |
2070 | /* We get in here if sendcmd() is polling for completions | |
7c832835 BH |
2071 | and gets some command back that it wasn't expecting -- |
2072 | something other than that which it just sent down. | |
2073 | Ordinarily, that shouldn't happen, but it can happen when | |
3da8b713 | 2074 | the scsi tape stuff gets into error handling mode, and |
7c832835 | 2075 | starts using sendcmd() to try to abort commands and |
3da8b713 | 2076 | reset tape drives. In that case, sendcmd may pick up |
2077 | completions of commands that were sent to logical drives | |
7c832835 | 2078 | through the block i/o system, or cciss ioctls completing, etc. |
3da8b713 | 2079 | In that case, we need to save those completions for later |
2080 | processing by the interrupt handler. | |
7c832835 | 2081 | */ |
3da8b713 | 2082 | |
2083 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2084 | struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects; |
3da8b713 | 2085 | |
2086 | /* If it's not the scsi tape stuff doing error handling, (abort */ | |
2087 | /* or reset) then we don't expect anything weird. */ | |
2088 | if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) { | |
2089 | #endif | |
7c832835 BH |
2090 | printk(KERN_WARNING "cciss cciss%d: SendCmd " |
2091 | "Invalid command list address returned! (%lx)\n", | |
2092 | ctlr, complete); | |
3da8b713 | 2093 | /* not much we can do. */ |
2094 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2095 | return 1; | |
2096 | } | |
2097 | ||
2098 | /* We've sent down an abort or reset, but something else | |
2099 | has completed */ | |
f880632f | 2100 | if (srl->ncompletions >= (hba[ctlr]->nr_cmds + 2)) { |
3da8b713 | 2101 | /* Uh oh. No room to save it for later... */ |
2102 | printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, " | |
7c832835 | 2103 | "reject list overflow, command lost!\n", ctlr); |
3da8b713 | 2104 | return 1; |
2105 | } | |
2106 | /* Save it for later */ | |
2107 | srl->complete[srl->ncompletions] = complete; | |
2108 | srl->ncompletions++; | |
2109 | #endif | |
2110 | return 0; | |
2111 | } | |
2112 | ||
1da177e4 | 2113 | /* |
7c832835 BH |
2114 | * Send a command to the controller, and wait for it to complete. |
2115 | * Only used at init time. | |
1da177e4 | 2116 | */ |
7c832835 BH |
2117 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, |
2118 | 1: address logical volume log_unit, | |
2119 | 2: periph device address is scsi3addr */ | |
2120 | unsigned int log_unit, | |
2121 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) | |
1da177e4 LT |
2122 | { |
2123 | CommandList_struct *c; | |
2124 | int i; | |
2125 | unsigned long complete; | |
7c832835 | 2126 | ctlr_info_t *info_p = hba[ctlr]; |
1da177e4 | 2127 | u64bit buff_dma_handle; |
3da8b713 | 2128 | int status, done = 0; |
1da177e4 LT |
2129 | |
2130 | if ((c = cmd_alloc(info_p, 1)) == NULL) { | |
2131 | printk(KERN_WARNING "cciss: unable to get memory"); | |
e2019b58 | 2132 | return IO_ERROR; |
1da177e4 LT |
2133 | } |
2134 | status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 2135 | log_unit, page_code, scsi3addr, cmd_type); |
1da177e4 LT |
2136 | if (status != IO_OK) { |
2137 | cmd_free(info_p, c, 1); | |
2138 | return status; | |
2139 | } | |
7c832835 | 2140 | resend_cmd1: |
1da177e4 | 2141 | /* |
7c832835 BH |
2142 | * Disable interrupt |
2143 | */ | |
1da177e4 LT |
2144 | #ifdef CCISS_DEBUG |
2145 | printk(KERN_DEBUG "cciss: turning intr off\n"); | |
7c832835 BH |
2146 | #endif /* CCISS_DEBUG */ |
2147 | info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF); | |
2148 | ||
1da177e4 | 2149 | /* Make sure there is room in the command FIFO */ |
7c832835 | 2150 | /* Actually it should be completely empty at this time */ |
3da8b713 | 2151 | /* unless we are in here doing error handling for the scsi */ |
2152 | /* tape side of the driver. */ | |
7c832835 | 2153 | for (i = 200000; i > 0; i--) { |
1da177e4 | 2154 | /* if fifo isn't full go */ |
7c832835 BH |
2155 | if (!(info_p->access.fifo_full(info_p))) { |
2156 | ||
2157 | break; | |
2158 | } | |
2159 | udelay(10); | |
2160 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," | |
2161 | " waiting!\n", ctlr); | |
2162 | } | |
2163 | /* | |
2164 | * Send the cmd | |
2165 | */ | |
2166 | info_p->access.submit_command(info_p, c); | |
3da8b713 | 2167 | done = 0; |
2168 | do { | |
2169 | complete = pollcomplete(ctlr); | |
1da177e4 LT |
2170 | |
2171 | #ifdef CCISS_DEBUG | |
3da8b713 | 2172 | printk(KERN_DEBUG "cciss: command completed\n"); |
7c832835 | 2173 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2174 | |
3da8b713 | 2175 | if (complete == 1) { |
7c832835 BH |
2176 | printk(KERN_WARNING |
2177 | "cciss cciss%d: SendCmd Timeout out, " | |
2178 | "No command list address returned!\n", ctlr); | |
3da8b713 | 2179 | status = IO_ERROR; |
2180 | done = 1; | |
2181 | break; | |
2182 | } | |
2183 | ||
2184 | /* This will need to change for direct lookup completions */ | |
7c832835 BH |
2185 | if ((complete & CISS_ERROR_BIT) |
2186 | && (complete & ~CISS_ERROR_BIT) == c->busaddr) { | |
2187 | /* if data overrun or underun on Report command | |
2188 | ignore it | |
2189 | */ | |
1da177e4 LT |
2190 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || |
2191 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || | |
2192 | (c->Request.CDB[0] == CISS_INQUIRY)) && | |
7c832835 BH |
2193 | ((c->err_info->CommandStatus == |
2194 | CMD_DATA_OVERRUN) || | |
2195 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN) | |
2196 | )) { | |
1da177e4 LT |
2197 | complete = c->busaddr; |
2198 | } else { | |
2199 | if (c->err_info->CommandStatus == | |
7c832835 | 2200 | CMD_UNSOLICITED_ABORT) { |
1da177e4 | 2201 | printk(KERN_WARNING "cciss%d: " |
7c832835 BH |
2202 | "unsolicited abort %p\n", |
2203 | ctlr, c); | |
1da177e4 LT |
2204 | if (c->retry_count < MAX_CMD_RETRIES) { |
2205 | printk(KERN_WARNING | |
7c832835 BH |
2206 | "cciss%d: retrying %p\n", |
2207 | ctlr, c); | |
1da177e4 LT |
2208 | c->retry_count++; |
2209 | /* erase the old error */ | |
2210 | /* information */ | |
2211 | memset(c->err_info, 0, | |
7c832835 BH |
2212 | sizeof |
2213 | (ErrorInfo_struct)); | |
1da177e4 LT |
2214 | goto resend_cmd1; |
2215 | } else { | |
2216 | printk(KERN_WARNING | |
7c832835 BH |
2217 | "cciss%d: retried %p too " |
2218 | "many times\n", ctlr, c); | |
1da177e4 LT |
2219 | status = IO_ERROR; |
2220 | goto cleanup1; | |
2221 | } | |
7c832835 BH |
2222 | } else if (c->err_info->CommandStatus == |
2223 | CMD_UNABORTABLE) { | |
2224 | printk(KERN_WARNING | |
2225 | "cciss%d: command could not be aborted.\n", | |
2226 | ctlr); | |
3da8b713 | 2227 | status = IO_ERROR; |
2228 | goto cleanup1; | |
1da177e4 LT |
2229 | } |
2230 | printk(KERN_WARNING "ciss ciss%d: sendcmd" | |
7c832835 BH |
2231 | " Error %x \n", ctlr, |
2232 | c->err_info->CommandStatus); | |
1da177e4 | 2233 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
7c832835 BH |
2234 | " offensive info\n" |
2235 | " size %x\n num %x value %x\n", | |
2236 | ctlr, | |
2237 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2238 | offense_size, | |
2239 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2240 | offense_num, | |
2241 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2242 | offense_value); | |
1da177e4 LT |
2243 | status = IO_ERROR; |
2244 | goto cleanup1; | |
2245 | } | |
2246 | } | |
3da8b713 | 2247 | /* This will need changing for direct lookup completions */ |
7c832835 | 2248 | if (complete != c->busaddr) { |
3da8b713 | 2249 | if (add_sendcmd_reject(cmd, ctlr, complete) != 0) { |
7c832835 | 2250 | BUG(); /* we are pretty much hosed if we get here. */ |
3da8b713 | 2251 | } |
2252 | continue; | |
7c832835 | 2253 | } else |
3da8b713 | 2254 | done = 1; |
7c832835 BH |
2255 | } while (!done); |
2256 | ||
2257 | cleanup1: | |
1da177e4 | 2258 | /* unlock the data buffer from DMA */ |
bb2a37bf MM |
2259 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2260 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
1da177e4 | 2261 | pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val, |
7c832835 | 2262 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
3da8b713 | 2263 | #ifdef CONFIG_CISS_SCSI_TAPE |
2264 | /* if we saved some commands for later, process them now. */ | |
2265 | if (info_p->scsi_rejects.ncompletions > 0) | |
7d12e780 | 2266 | do_cciss_intr(0, info_p); |
3da8b713 | 2267 | #endif |
1da177e4 | 2268 | cmd_free(info_p, c, 1); |
e2019b58 | 2269 | return status; |
7c832835 BH |
2270 | } |
2271 | ||
1da177e4 LT |
2272 | /* |
2273 | * Map (physical) PCI mem into (virtual) kernel space | |
2274 | */ | |
2275 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2276 | { | |
7c832835 BH |
2277 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2278 | ulong page_offs = ((ulong) base) - page_base; | |
2279 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2280 | |
7c832835 | 2281 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2282 | } |
2283 | ||
7c832835 BH |
2284 | /* |
2285 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2286 | * the Q to wait for completion. | |
2287 | */ | |
2288 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
2289 | { |
2290 | CommandList_struct *c; | |
7c832835 BH |
2291 | |
2292 | while ((c = h->reqQ) != NULL) { | |
1da177e4 LT |
2293 | /* can't do anything if fifo is full */ |
2294 | if ((h->access.fifo_full(h))) { | |
2295 | printk(KERN_WARNING "cciss: fifo full\n"); | |
2296 | break; | |
2297 | } | |
2298 | ||
7c832835 | 2299 | /* Get the first entry from the Request Q */ |
1da177e4 LT |
2300 | removeQ(&(h->reqQ), c); |
2301 | h->Qdepth--; | |
7c832835 BH |
2302 | |
2303 | /* Tell the controller execute command */ | |
1da177e4 | 2304 | h->access.submit_command(h, c); |
7c832835 BH |
2305 | |
2306 | /* Put job onto the completed Q */ | |
2307 | addQ(&(h->cmpQ), c); | |
1da177e4 LT |
2308 | } |
2309 | } | |
7c832835 | 2310 | |
1da177e4 LT |
2311 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
2312 | /* Zeros out the error record and then resends the command back */ | |
2313 | /* to the controller */ | |
7c832835 | 2314 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
2315 | { |
2316 | /* erase the old error information */ | |
2317 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2318 | ||
2319 | /* add it to software queue and then send it to the controller */ | |
7c832835 | 2320 | addQ(&(h->reqQ), c); |
1da177e4 | 2321 | h->Qdepth++; |
7c832835 | 2322 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
2323 | h->maxQsinceinit = h->Qdepth; |
2324 | ||
2325 | start_io(h); | |
2326 | } | |
a9925a06 | 2327 | |
7c832835 | 2328 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
2329 | * buffers for the completed job. Note that this function does not need |
2330 | * to hold the hba/queue lock. | |
7c832835 BH |
2331 | */ |
2332 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
2333 | int timeout) | |
1da177e4 LT |
2334 | { |
2335 | int status = 1; | |
1da177e4 | 2336 | int retry_cmd = 0; |
7c832835 | 2337 | |
1da177e4 | 2338 | if (timeout) |
7c832835 | 2339 | status = 0; |
1da177e4 | 2340 | |
7c832835 BH |
2341 | if (cmd->err_info->CommandStatus != 0) { /* an error has occurred */ |
2342 | switch (cmd->err_info->CommandStatus) { | |
1da177e4 | 2343 | unsigned char sense_key; |
7c832835 BH |
2344 | case CMD_TARGET_STATUS: |
2345 | status = 0; | |
2346 | ||
2347 | if (cmd->err_info->ScsiStatus == 0x02) { | |
2348 | printk(KERN_WARNING "cciss: cmd %p " | |
2349 | "has CHECK CONDITION " | |
2350 | " byte 2 = 0x%x\n", cmd, | |
2351 | cmd->err_info->SenseInfo[2] | |
2352 | ); | |
2353 | /* check the sense key */ | |
2354 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
2355 | /* no status or recovered error */ | |
2356 | if ((sense_key == 0x0) || (sense_key == 0x1)) { | |
2357 | status = 1; | |
1da177e4 | 2358 | } |
7c832835 BH |
2359 | } else { |
2360 | printk(KERN_WARNING "cciss: cmd %p " | |
2361 | "has SCSI Status 0x%x\n", | |
2362 | cmd, cmd->err_info->ScsiStatus); | |
2363 | } | |
1da177e4 | 2364 | break; |
7c832835 BH |
2365 | case CMD_DATA_UNDERRUN: |
2366 | printk(KERN_WARNING "cciss: cmd %p has" | |
2367 | " completed with data underrun " | |
2368 | "reported\n", cmd); | |
1da177e4 | 2369 | break; |
7c832835 BH |
2370 | case CMD_DATA_OVERRUN: |
2371 | printk(KERN_WARNING "cciss: cmd %p has" | |
2372 | " completed with data overrun " | |
2373 | "reported\n", cmd); | |
1da177e4 | 2374 | break; |
7c832835 BH |
2375 | case CMD_INVALID: |
2376 | printk(KERN_WARNING "cciss: cmd %p is " | |
2377 | "reported invalid\n", cmd); | |
2378 | status = 0; | |
1da177e4 | 2379 | break; |
7c832835 BH |
2380 | case CMD_PROTOCOL_ERR: |
2381 | printk(KERN_WARNING "cciss: cmd %p has " | |
2382 | "protocol error \n", cmd); | |
2383 | status = 0; | |
1da177e4 | 2384 | break; |
7c832835 BH |
2385 | case CMD_HARDWARE_ERR: |
2386 | printk(KERN_WARNING "cciss: cmd %p had " | |
2387 | " hardware error\n", cmd); | |
2388 | status = 0; | |
1da177e4 | 2389 | break; |
7c832835 BH |
2390 | case CMD_CONNECTION_LOST: |
2391 | printk(KERN_WARNING "cciss: cmd %p had " | |
2392 | "connection lost\n", cmd); | |
2393 | status = 0; | |
1da177e4 | 2394 | break; |
7c832835 BH |
2395 | case CMD_ABORTED: |
2396 | printk(KERN_WARNING "cciss: cmd %p was " | |
2397 | "aborted\n", cmd); | |
2398 | status = 0; | |
1da177e4 | 2399 | break; |
7c832835 BH |
2400 | case CMD_ABORT_FAILED: |
2401 | printk(KERN_WARNING "cciss: cmd %p reports " | |
2402 | "abort failed\n", cmd); | |
2403 | status = 0; | |
1da177e4 | 2404 | break; |
7c832835 BH |
2405 | case CMD_UNSOLICITED_ABORT: |
2406 | printk(KERN_WARNING "cciss%d: unsolicited " | |
2407 | "abort %p\n", h->ctlr, cmd); | |
2408 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
2409 | retry_cmd = 1; | |
2410 | printk(KERN_WARNING | |
2411 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
2412 | cmd->retry_count++; | |
2413 | } else | |
2414 | printk(KERN_WARNING | |
2415 | "cciss%d: %p retried too " | |
2416 | "many times\n", h->ctlr, cmd); | |
2417 | status = 0; | |
2418 | break; | |
2419 | case CMD_TIMEOUT: | |
2420 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
2421 | status = 0; | |
2422 | break; | |
2423 | default: | |
2424 | printk(KERN_WARNING "cciss: cmd %p returned " | |
2425 | "unknown status %x\n", cmd, | |
2426 | cmd->err_info->CommandStatus); | |
2427 | status = 0; | |
1da177e4 LT |
2428 | } |
2429 | } | |
2430 | /* We need to return this command */ | |
7c832835 BH |
2431 | if (retry_cmd) { |
2432 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 2433 | return; |
7c832835 | 2434 | } |
1da177e4 | 2435 | |
a9925a06 JA |
2436 | cmd->rq->completion_data = cmd; |
2437 | cmd->rq->errors = status; | |
2056a782 | 2438 | blk_add_trace_rq(cmd->rq->q, cmd->rq, BLK_TA_COMPLETE); |
a9925a06 | 2439 | blk_complete_request(cmd->rq); |
1da177e4 LT |
2440 | } |
2441 | ||
7c832835 BH |
2442 | /* |
2443 | * Get a request and submit it to the controller. | |
1da177e4 LT |
2444 | */ |
2445 | static void do_cciss_request(request_queue_t *q) | |
2446 | { | |
7c832835 | 2447 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 2448 | CommandList_struct *c; |
00988a35 MMOD |
2449 | sector_t start_blk; |
2450 | int seg; | |
1da177e4 LT |
2451 | struct request *creq; |
2452 | u64bit temp64; | |
2453 | struct scatterlist tmp_sg[MAXSGENTRIES]; | |
2454 | drive_info_struct *drv; | |
2455 | int i, dir; | |
2456 | ||
2457 | /* We call start_io here in case there is a command waiting on the | |
2458 | * queue that has not been sent. | |
7c832835 | 2459 | */ |
1da177e4 LT |
2460 | if (blk_queue_plugged(q)) |
2461 | goto startio; | |
2462 | ||
7c832835 | 2463 | queue: |
1da177e4 LT |
2464 | creq = elv_next_request(q); |
2465 | if (!creq) | |
2466 | goto startio; | |
2467 | ||
089fe1b2 | 2468 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
1da177e4 | 2469 | |
7c832835 | 2470 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
2471 | goto full; |
2472 | ||
2473 | blkdev_dequeue_request(creq); | |
2474 | ||
2475 | spin_unlock_irq(q->queue_lock); | |
2476 | ||
2477 | c->cmd_type = CMD_RWREQ; | |
2478 | c->rq = creq; | |
7c832835 BH |
2479 | |
2480 | /* fill in the request */ | |
1da177e4 | 2481 | drv = creq->rq_disk->private_data; |
7c832835 | 2482 | c->Header.ReplyQueue = 0; // unused in simple mode |
33079b21 MM |
2483 | /* got command from pool, so use the command block index instead */ |
2484 | /* for direct lookups. */ | |
2485 | /* The first 2 bits are reserved for controller error reporting. */ | |
2486 | c->Header.Tag.lower = (c->cmdindex << 3); | |
7c832835 BH |
2487 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
2488 | c->Header.LUN.LogDev.VolId = drv->LunID; | |
1da177e4 | 2489 | c->Header.LUN.LogDev.Mode = 1; |
7c832835 BH |
2490 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
2491 | c->Request.Type.Type = TYPE_CMD; // It is a command. | |
2492 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2493 | c->Request.Type.Direction = | |
00988a35 | 2494 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
7c832835 BH |
2495 | c->Request.Timeout = 0; // Don't time out |
2496 | c->Request.CDB[0] = | |
00988a35 | 2497 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
1da177e4 LT |
2498 | start_blk = creq->sector; |
2499 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2500 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", (int)creq->sector, |
2501 | (int)creq->nr_sectors); | |
2502 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
2503 | |
2504 | seg = blk_rq_map_sg(q, creq, tmp_sg); | |
2505 | ||
7c832835 | 2506 | /* get the DMA records for the setup */ |
1da177e4 LT |
2507 | if (c->Request.Type.Direction == XFER_READ) |
2508 | dir = PCI_DMA_FROMDEVICE; | |
2509 | else | |
2510 | dir = PCI_DMA_TODEVICE; | |
2511 | ||
7c832835 | 2512 | for (i = 0; i < seg; i++) { |
1da177e4 LT |
2513 | c->SG[i].Len = tmp_sg[i].length; |
2514 | temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page, | |
7c832835 BH |
2515 | tmp_sg[i].offset, |
2516 | tmp_sg[i].length, dir); | |
1da177e4 | 2517 | c->SG[i].Addr.lower = temp64.val32.lower; |
7c832835 BH |
2518 | c->SG[i].Addr.upper = temp64.val32.upper; |
2519 | c->SG[i].Ext = 0; // we are not chaining | |
1da177e4 | 2520 | } |
7c832835 BH |
2521 | /* track how many SG entries we are using */ |
2522 | if (seg > h->maxSG) | |
2523 | h->maxSG = seg; | |
1da177e4 LT |
2524 | |
2525 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2526 | printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", |
2527 | creq->nr_sectors, seg); | |
2528 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
2529 | |
2530 | c->Header.SGList = c->Header.SGTotal = seg; | |
00988a35 MMOD |
2531 | if(h->cciss_read == CCISS_READ_10) { |
2532 | c->Request.CDB[1] = 0; | |
2533 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB | |
2534 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; | |
2535 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
2536 | c->Request.CDB[5] = start_blk & 0xff; | |
2537 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB | |
2538 | c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff; | |
2539 | c->Request.CDB[8] = creq->nr_sectors & 0xff; | |
2540 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; | |
2541 | } else { | |
2542 | c->Request.CDBLen = 16; | |
2543 | c->Request.CDB[1]= 0; | |
2544 | c->Request.CDB[2]= (start_blk >> 56) & 0xff; //MSB | |
2545 | c->Request.CDB[3]= (start_blk >> 48) & 0xff; | |
2546 | c->Request.CDB[4]= (start_blk >> 40) & 0xff; | |
2547 | c->Request.CDB[5]= (start_blk >> 32) & 0xff; | |
2548 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; | |
2549 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
2550 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
2551 | c->Request.CDB[9]= start_blk & 0xff; | |
2552 | c->Request.CDB[10]= (creq->nr_sectors >> 24) & 0xff; | |
2553 | c->Request.CDB[11]= (creq->nr_sectors >> 16) & 0xff; | |
2554 | c->Request.CDB[12]= (creq->nr_sectors >> 8) & 0xff; | |
2555 | c->Request.CDB[13]= creq->nr_sectors & 0xff; | |
2556 | c->Request.CDB[14] = c->Request.CDB[15] = 0; | |
2557 | } | |
1da177e4 LT |
2558 | |
2559 | spin_lock_irq(q->queue_lock); | |
2560 | ||
7c832835 | 2561 | addQ(&(h->reqQ), c); |
1da177e4 | 2562 | h->Qdepth++; |
7c832835 BH |
2563 | if (h->Qdepth > h->maxQsinceinit) |
2564 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
2565 | |
2566 | goto queue; | |
00988a35 | 2567 | full: |
1da177e4 | 2568 | blk_stop_queue(q); |
00988a35 | 2569 | startio: |
1da177e4 LT |
2570 | /* We will already have the driver lock here so not need |
2571 | * to lock it. | |
7c832835 | 2572 | */ |
1da177e4 LT |
2573 | start_io(h); |
2574 | } | |
2575 | ||
3da8b713 | 2576 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
2577 | { | |
2578 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2579 | /* Any rejects from sendcmd() lying around? Process them first */ | |
2580 | if (h->scsi_rejects.ncompletions == 0) | |
2581 | return h->access.command_completed(h); | |
2582 | else { | |
2583 | struct sendcmd_reject_list *srl; | |
2584 | int n; | |
2585 | srl = &h->scsi_rejects; | |
2586 | n = --srl->ncompletions; | |
2587 | /* printk("cciss%d: processing saved reject\n", h->ctlr); */ | |
2588 | printk("p"); | |
2589 | return srl->complete[n]; | |
2590 | } | |
2591 | #else | |
2592 | return h->access.command_completed(h); | |
2593 | #endif | |
2594 | } | |
2595 | ||
2596 | static inline int interrupt_pending(ctlr_info_t *h) | |
2597 | { | |
2598 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2599 | return (h->access.intr_pending(h) |
3da8b713 | 2600 | || (h->scsi_rejects.ncompletions > 0)); |
2601 | #else | |
2602 | return h->access.intr_pending(h); | |
2603 | #endif | |
2604 | } | |
2605 | ||
2606 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
2607 | { | |
2608 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
2609 | return (((h->access.intr_pending(h) == 0) || |
2610 | (h->interrupts_enabled == 0)) | |
2611 | && (h->scsi_rejects.ncompletions == 0)); | |
3da8b713 | 2612 | #else |
7c832835 | 2613 | return (((h->access.intr_pending(h) == 0) || |
3da8b713 | 2614 | (h->interrupts_enabled == 0))); |
2615 | #endif | |
2616 | } | |
2617 | ||
7d12e780 | 2618 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
1da177e4 LT |
2619 | { |
2620 | ctlr_info_t *h = dev_id; | |
2621 | CommandList_struct *c; | |
2622 | unsigned long flags; | |
33079b21 | 2623 | __u32 a, a1, a2; |
1da177e4 | 2624 | |
3da8b713 | 2625 | if (interrupt_not_for_us(h)) |
1da177e4 | 2626 | return IRQ_NONE; |
1da177e4 LT |
2627 | /* |
2628 | * If there are completed commands in the completion queue, | |
2629 | * we had better do something about it. | |
2630 | */ | |
2631 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 2632 | while (interrupt_pending(h)) { |
7c832835 | 2633 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
1da177e4 | 2634 | a1 = a; |
33079b21 MM |
2635 | if ((a & 0x04)) { |
2636 | a2 = (a >> 3); | |
f880632f | 2637 | if (a2 >= h->nr_cmds) { |
7c832835 BH |
2638 | printk(KERN_WARNING |
2639 | "cciss: controller cciss%d failed, stopping.\n", | |
2640 | h->ctlr); | |
33079b21 MM |
2641 | fail_all_cmds(h->ctlr); |
2642 | return IRQ_HANDLED; | |
2643 | } | |
2644 | ||
2645 | c = h->cmd_pool + a2; | |
2646 | a = c->busaddr; | |
2647 | ||
2648 | } else { | |
7c832835 | 2649 | a &= ~3; |
33079b21 | 2650 | if ((c = h->cmpQ) == NULL) { |
7c832835 BH |
2651 | printk(KERN_WARNING |
2652 | "cciss: Completion of %08x ignored\n", | |
2653 | a1); | |
2654 | continue; | |
2655 | } | |
2656 | while (c->busaddr != a) { | |
2657 | c = c->next; | |
2658 | if (c == h->cmpQ) | |
2659 | break; | |
2660 | } | |
33079b21 | 2661 | } |
1da177e4 LT |
2662 | /* |
2663 | * If we've found the command, take it off the | |
2664 | * completion Q and free it | |
2665 | */ | |
7c832835 | 2666 | if (c->busaddr == a) { |
1da177e4 LT |
2667 | removeQ(&h->cmpQ, c); |
2668 | if (c->cmd_type == CMD_RWREQ) { | |
2669 | complete_command(h, c, 0); | |
2670 | } else if (c->cmd_type == CMD_IOCTL_PEND) { | |
2671 | complete(c->waiting); | |
2672 | } | |
2673 | # ifdef CONFIG_CISS_SCSI_TAPE | |
2674 | else if (c->cmd_type == CMD_SCSI) | |
2675 | complete_scsi_command(c, 0, a1); | |
2676 | # endif | |
2677 | continue; | |
2678 | } | |
2679 | } | |
2680 | } | |
2681 | ||
1da177e4 LT |
2682 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2683 | return IRQ_HANDLED; | |
2684 | } | |
7c832835 BH |
2685 | |
2686 | /* | |
d14c4ab5 | 2687 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 2688 | * the io functions. |
7c832835 | 2689 | * This is for debug only. |
1da177e4 LT |
2690 | */ |
2691 | #ifdef CCISS_DEBUG | |
7c832835 | 2692 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 LT |
2693 | { |
2694 | int i; | |
2695 | char temp_name[17]; | |
2696 | ||
2697 | printk("Controller Configuration information\n"); | |
2698 | printk("------------------------------------\n"); | |
7c832835 | 2699 | for (i = 0; i < 4; i++) |
1da177e4 | 2700 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
2701 | temp_name[4] = '\0'; |
2702 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 2703 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
2704 | printk(" Transport methods supported = 0x%x\n", |
2705 | readl(&(tb->TransportSupport))); | |
2706 | printk(" Transport methods active = 0x%x\n", | |
2707 | readl(&(tb->TransportActive))); | |
2708 | printk(" Requested transport Method = 0x%x\n", | |
2709 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 2710 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 2711 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 2712 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
2713 | readl(&(tb->HostWrite.CoalIntCount))); |
2714 | printk(" Max outstanding commands = 0x%d\n", | |
2715 | readl(&(tb->CmdsOutMax))); | |
2716 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
2717 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
2718 | temp_name[i] = readb(&(tb->ServerName[i])); |
2719 | temp_name[16] = '\0'; | |
2720 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 2721 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
1da177e4 | 2722 | } |
7c832835 | 2723 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2724 | |
7c832835 | 2725 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
2726 | { |
2727 | int i, offset, mem_type, bar_type; | |
7c832835 | 2728 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
2729 | return 0; |
2730 | offset = 0; | |
7c832835 BH |
2731 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
2732 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
2733 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
2734 | offset += 4; | |
2735 | else { | |
2736 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 2737 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 2738 | switch (mem_type) { |
7c832835 BH |
2739 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
2740 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
2741 | offset += 4; /* 32 bit */ | |
2742 | break; | |
2743 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
2744 | offset += 8; | |
2745 | break; | |
2746 | default: /* reserved in PCI 2.2 */ | |
2747 | printk(KERN_WARNING | |
2748 | "Base address is invalid\n"); | |
2749 | return -1; | |
1da177e4 LT |
2750 | break; |
2751 | } | |
2752 | } | |
7c832835 BH |
2753 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
2754 | return i + 1; | |
1da177e4 LT |
2755 | } |
2756 | return -1; | |
2757 | } | |
2758 | ||
fb86a35b MM |
2759 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
2760 | * controllers that are capable. If not, we use IO-APIC mode. | |
2761 | */ | |
2762 | ||
7c832835 BH |
2763 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
2764 | struct pci_dev *pdev, __u32 board_id) | |
fb86a35b MM |
2765 | { |
2766 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
2767 | int err; |
2768 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
2769 | {0, 2}, {0, 3} | |
2770 | }; | |
fb86a35b MM |
2771 | |
2772 | /* Some boards advertise MSI but don't really support it */ | |
2773 | if ((board_id == 0x40700E11) || | |
7c832835 BH |
2774 | (board_id == 0x40800E11) || |
2775 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
fb86a35b MM |
2776 | goto default_int_mode; |
2777 | ||
7c832835 BH |
2778 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
2779 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); | |
2780 | if (!err) { | |
2781 | c->intr[0] = cciss_msix_entries[0].vector; | |
2782 | c->intr[1] = cciss_msix_entries[1].vector; | |
2783 | c->intr[2] = cciss_msix_entries[2].vector; | |
2784 | c->intr[3] = cciss_msix_entries[3].vector; | |
2785 | c->msix_vector = 1; | |
2786 | return; | |
2787 | } | |
2788 | if (err > 0) { | |
2789 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
2790 | "available\n", err); | |
1ecb9c0f | 2791 | goto default_int_mode; |
7c832835 BH |
2792 | } else { |
2793 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
2794 | err); | |
1ecb9c0f | 2795 | goto default_int_mode; |
7c832835 BH |
2796 | } |
2797 | } | |
2798 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
2799 | if (!pci_enable_msi(pdev)) { | |
7c832835 | 2800 | c->msi_vector = 1; |
7c832835 BH |
2801 | } else { |
2802 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
7c832835 BH |
2803 | } |
2804 | } | |
1ecb9c0f | 2805 | default_int_mode: |
7c832835 | 2806 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 2807 | /* if we get here we're going to use the default interrupt mode */ |
7c832835 | 2808 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
fb86a35b MM |
2809 | return; |
2810 | } | |
2811 | ||
1da177e4 LT |
2812 | static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
2813 | { | |
2814 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
2815 | __u32 board_id, scratchpad = 0; | |
2816 | __u64 cfg_offset; | |
2817 | __u32 cfg_base_addr; | |
2818 | __u64 cfg_base_addr_index; | |
c33ac89b | 2819 | int i, err; |
1da177e4 LT |
2820 | |
2821 | /* check to see if controller has been disabled */ | |
2822 | /* BEFORE trying to enable it */ | |
7c832835 BH |
2823 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
2824 | if (!(command & 0x02)) { | |
2825 | printk(KERN_WARNING | |
2826 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 2827 | return -ENODEV; |
1da177e4 LT |
2828 | } |
2829 | ||
c33ac89b | 2830 | err = pci_enable_device(pdev); |
7c832835 | 2831 | if (err) { |
1da177e4 | 2832 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 2833 | return err; |
1da177e4 | 2834 | } |
1da177e4 | 2835 | |
4e570309 BH |
2836 | err = pci_request_regions(pdev, "cciss"); |
2837 | if (err) { | |
2838 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 2839 | "aborting\n"); |
872225ca | 2840 | return err; |
4e570309 BH |
2841 | } |
2842 | ||
1da177e4 LT |
2843 | subsystem_vendor_id = pdev->subsystem_vendor; |
2844 | subsystem_device_id = pdev->subsystem_device; | |
2845 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
7c832835 | 2846 | subsystem_vendor_id); |
1da177e4 | 2847 | |
1da177e4 LT |
2848 | #ifdef CCISS_DEBUG |
2849 | printk("command = %x\n", command); | |
2850 | printk("irq = %x\n", pdev->irq); | |
2851 | printk("board_id = %x\n", board_id); | |
7c832835 | 2852 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2853 | |
fb86a35b MM |
2854 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
2855 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
2856 | */ | |
2857 | cciss_interrupt_mode(c, pdev, board_id); | |
1da177e4 LT |
2858 | |
2859 | /* | |
2860 | * Memory base addr is first addr , the second points to the config | |
7c832835 | 2861 | * table |
1da177e4 LT |
2862 | */ |
2863 | ||
7c832835 | 2864 | c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */ |
1da177e4 LT |
2865 | #ifdef CCISS_DEBUG |
2866 | printk("address 0 = %x\n", c->paddr); | |
7c832835 | 2867 | #endif /* CCISS_DEBUG */ |
a5b92873 | 2868 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
1da177e4 LT |
2869 | |
2870 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
2871 | * We poll for up to 120 secs, once per 100ms. */ | |
7c832835 | 2872 | for (i = 0; i < 1200; i++) { |
1da177e4 LT |
2873 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
2874 | if (scratchpad == CCISS_FIRMWARE_READY) | |
2875 | break; | |
2876 | set_current_state(TASK_INTERRUPTIBLE); | |
7c832835 | 2877 | schedule_timeout(HZ / 10); /* wait 100ms */ |
1da177e4 LT |
2878 | } |
2879 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
2880 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
c33ac89b | 2881 | err = -ENODEV; |
4e570309 | 2882 | goto err_out_free_res; |
1da177e4 LT |
2883 | } |
2884 | ||
2885 | /* get the address index number */ | |
2886 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
2887 | cfg_base_addr &= (__u32) 0x0000ffff; | |
2888 | #ifdef CCISS_DEBUG | |
2889 | printk("cfg base address = %x\n", cfg_base_addr); | |
7c832835 BH |
2890 | #endif /* CCISS_DEBUG */ |
2891 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); | |
1da177e4 LT |
2892 | #ifdef CCISS_DEBUG |
2893 | printk("cfg base address index = %x\n", cfg_base_addr_index); | |
7c832835 | 2894 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
2895 | if (cfg_base_addr_index == -1) { |
2896 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
c33ac89b | 2897 | err = -ENODEV; |
4e570309 | 2898 | goto err_out_free_res; |
1da177e4 LT |
2899 | } |
2900 | ||
2901 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
2902 | #ifdef CCISS_DEBUG | |
2903 | printk("cfg offset = %x\n", cfg_offset); | |
7c832835 BH |
2904 | #endif /* CCISS_DEBUG */ |
2905 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
2906 | cfg_base_addr_index) + | |
2907 | cfg_offset, sizeof(CfgTable_struct)); | |
1da177e4 LT |
2908 | c->board_id = board_id; |
2909 | ||
2910 | #ifdef CCISS_DEBUG | |
945f390f | 2911 | print_cfg_table(c->cfgtable); |
7c832835 | 2912 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2913 | |
7c832835 | 2914 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
1da177e4 LT |
2915 | if (board_id == products[i].board_id) { |
2916 | c->product_name = products[i].product_name; | |
2917 | c->access = *(products[i].access); | |
f880632f | 2918 | c->nr_cmds = products[i].nr_cmds; |
1da177e4 LT |
2919 | break; |
2920 | } | |
2921 | } | |
7c832835 BH |
2922 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
2923 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
2924 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
2925 | (readb(&c->cfgtable->Signature[3]) != 'S')) { | |
1da177e4 | 2926 | printk("Does not appear to be a valid CISS config table\n"); |
c33ac89b | 2927 | err = -ENODEV; |
4e570309 | 2928 | goto err_out_free_res; |
1da177e4 | 2929 | } |
4ff9a9a4 MM |
2930 | /* We didn't find the controller in our list. We know the |
2931 | * signature is valid. If it's an HP device let's try to | |
2932 | * bind to the device and fire it up. Otherwise we bail. | |
2933 | */ | |
2934 | if (i == ARRAY_SIZE(products)) { | |
2935 | if (subsystem_vendor_id == PCI_VENDOR_ID_HP) { | |
2936 | c->product_name = products[i-1].product_name; | |
2937 | c->access = *(products[i-1].access); | |
f880632f | 2938 | c->nr_cmds = products[i-1].nr_cmds; |
4ff9a9a4 MM |
2939 | printk(KERN_WARNING "cciss: This is an unknown " |
2940 | "Smart Array controller.\n" | |
2941 | "cciss: Please update to the latest driver " | |
2942 | "available from www.hp.com.\n"); | |
2943 | } else { | |
2944 | printk(KERN_WARNING "cciss: Sorry, I don't know how" | |
2945 | " to access the Smart Array controller %08lx\n" | |
2946 | , (unsigned long)board_id); | |
2947 | err = -ENODEV; | |
2948 | goto err_out_free_res; | |
2949 | } | |
2950 | } | |
1da177e4 | 2951 | #ifdef CONFIG_X86 |
7c832835 BH |
2952 | { |
2953 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
2954 | __u32 prefetch; | |
2955 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
2956 | prefetch |= 0x100; | |
2957 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
2958 | } | |
1da177e4 LT |
2959 | #endif |
2960 | ||
f92e2f5f MM |
2961 | /* Disabling DMA prefetch for the P600 |
2962 | * An ASIC bug may result in a prefetch beyond | |
2963 | * physical memory. | |
2964 | */ | |
2965 | if(board_id == 0x3225103C) { | |
2966 | __u32 dma_prefetch; | |
2967 | dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); | |
2968 | dma_prefetch |= 0x8000; | |
2969 | writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); | |
2970 | } | |
2971 | ||
1da177e4 LT |
2972 | #ifdef CCISS_DEBUG |
2973 | printk("Trying to put board into Simple mode\n"); | |
7c832835 | 2974 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2975 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
7c832835 BH |
2976 | /* Update the field, and then ring the doorbell */ |
2977 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); | |
2978 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); | |
1da177e4 LT |
2979 | |
2980 | /* under certain very rare conditions, this can take awhile. | |
2981 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
2982 | * as we enter this code.) */ | |
7c832835 | 2983 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
1da177e4 LT |
2984 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
2985 | break; | |
2986 | /* delay and try again */ | |
2987 | set_current_state(TASK_INTERRUPTIBLE); | |
2988 | schedule_timeout(10); | |
7c832835 | 2989 | } |
1da177e4 LT |
2990 | |
2991 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2992 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
2993 | readl(c->vaddr + SA5_DOORBELL)); | |
2994 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 2995 | #ifdef CCISS_DEBUG |
7c832835 BH |
2996 | print_cfg_table(c->cfgtable); |
2997 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 2998 | |
7c832835 | 2999 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
1da177e4 | 3000 | printk(KERN_WARNING "cciss: unable to get board into" |
7c832835 | 3001 | " simple mode\n"); |
c33ac89b | 3002 | err = -ENODEV; |
4e570309 | 3003 | goto err_out_free_res; |
1da177e4 LT |
3004 | } |
3005 | return 0; | |
3006 | ||
7c832835 | 3007 | err_out_free_res: |
872225ca MM |
3008 | /* |
3009 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3010 | * Smart Array controllers that pci_enable_device does not undo | |
3011 | */ | |
4e570309 | 3012 | pci_release_regions(pdev); |
c33ac89b | 3013 | return err; |
1da177e4 LT |
3014 | } |
3015 | ||
7c832835 BH |
3016 | /* |
3017 | * Gets information about the local volumes attached to the controller. | |
3018 | */ | |
1da177e4 LT |
3019 | static void cciss_getgeometry(int cntl_num) |
3020 | { | |
3021 | ReportLunData_struct *ld_buff; | |
1da177e4 LT |
3022 | InquiryData_struct *inq_buff; |
3023 | int return_code; | |
3024 | int i; | |
3025 | int listlength = 0; | |
3026 | __u32 lunid = 0; | |
3027 | int block_size; | |
00988a35 | 3028 | sector_t total_size; |
1da177e4 | 3029 | |
06ff37ff | 3030 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
7c832835 BH |
3031 | if (ld_buff == NULL) { |
3032 | printk(KERN_ERR "cciss: out of memory\n"); | |
3033 | return; | |
3034 | } | |
7c832835 BH |
3035 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
3036 | if (inq_buff == NULL) { | |
3037 | printk(KERN_ERR "cciss: out of memory\n"); | |
1da177e4 | 3038 | kfree(ld_buff); |
7c832835 BH |
3039 | return; |
3040 | } | |
3041 | /* Get the firmware version */ | |
3042 | return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff, | |
3043 | sizeof(InquiryData_struct), 0, 0, 0, NULL, | |
3044 | TYPE_CMD); | |
3045 | if (return_code == IO_OK) { | |
1da177e4 LT |
3046 | hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32]; |
3047 | hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33]; | |
3048 | hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34]; | |
3049 | hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35]; | |
7c832835 BH |
3050 | } else { /* send command failed */ |
3051 | ||
1da177e4 | 3052 | printk(KERN_WARNING "cciss: unable to determine firmware" |
7c832835 | 3053 | " version of controller\n"); |
1da177e4 | 3054 | } |
7c832835 BH |
3055 | /* Get the number of logical volumes */ |
3056 | return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff, | |
3057 | sizeof(ReportLunData_struct), 0, 0, 0, NULL, | |
3058 | TYPE_CMD); | |
1da177e4 | 3059 | |
7c832835 | 3060 | if (return_code == IO_OK) { |
1da177e4 LT |
3061 | #ifdef CCISS_DEBUG |
3062 | printk("LUN Data\n--------------------------\n"); | |
7c832835 BH |
3063 | #endif /* CCISS_DEBUG */ |
3064 | ||
3065 | listlength |= | |
3066 | (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24; | |
3067 | listlength |= | |
3068 | (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16; | |
3069 | listlength |= | |
3070 | (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8; | |
1da177e4 | 3071 | listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]); |
7c832835 BH |
3072 | } else { /* reading number of logical volumes failed */ |
3073 | ||
1da177e4 | 3074 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 3075 | " command failed\n"); |
1da177e4 LT |
3076 | listlength = 0; |
3077 | } | |
7c832835 BH |
3078 | hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry |
3079 | if (hba[cntl_num]->num_luns > CISS_MAX_LUN) { | |
3080 | printk(KERN_ERR | |
3081 | "ciss: only %d number of logical volumes supported\n", | |
3082 | CISS_MAX_LUN); | |
1da177e4 LT |
3083 | hba[cntl_num]->num_luns = CISS_MAX_LUN; |
3084 | } | |
3085 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3086 | printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", |
3087 | ld_buff->LUNListLength[0], ld_buff->LUNListLength[1], | |
3088 | ld_buff->LUNListLength[2], ld_buff->LUNListLength[3], | |
3089 | hba[cntl_num]->num_luns); | |
3090 | #endif /* CCISS_DEBUG */ | |
3091 | ||
3092 | hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns - 1; | |
7c832835 BH |
3093 | for (i = 0; i < CISS_MAX_LUN; i++) { |
3094 | if (i < hba[cntl_num]->num_luns) { | |
3095 | lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) | |
3096 | << 24; | |
3097 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) | |
3098 | << 16; | |
3099 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) | |
3100 | << 8; | |
3101 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
3102 | ||
3103 | hba[cntl_num]->drv[i].LunID = lunid; | |
1da177e4 LT |
3104 | |
3105 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3106 | printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i, |
3107 | ld_buff->LUN[i][0], ld_buff->LUN[i][1], | |
3108 | ld_buff->LUN[i][2], ld_buff->LUN[i][3], | |
3109 | hba[cntl_num]->drv[i].LunID); | |
3110 | #endif /* CCISS_DEBUG */ | |
00988a35 MMOD |
3111 | |
3112 | /* testing to see if 16-byte CDBs are already being used */ | |
3113 | if(hba[cntl_num]->cciss_read == CCISS_READ_16) { | |
3114 | cciss_read_capacity_16(cntl_num, i, 0, | |
7c832835 | 3115 | &total_size, &block_size); |
00988a35 MMOD |
3116 | goto geo_inq; |
3117 | } | |
3118 | cciss_read_capacity(cntl_num, i, 0, &total_size, &block_size); | |
3119 | ||
3120 | /* total_size = last LBA + 1 */ | |
3121 | if(total_size == (__u32) 0) { | |
3122 | cciss_read_capacity_16(cntl_num, i, 0, | |
3123 | &total_size, &block_size); | |
3124 | hba[cntl_num]->cciss_read = CCISS_READ_16; | |
3125 | hba[cntl_num]->cciss_write = CCISS_WRITE_16; | |
3126 | } else { | |
3127 | hba[cntl_num]->cciss_read = CCISS_READ_10; | |
3128 | hba[cntl_num]->cciss_write = CCISS_WRITE_10; | |
3129 | } | |
3130 | geo_inq: | |
ddd47442 | 3131 | cciss_geometry_inquiry(cntl_num, i, 0, total_size, |
7c832835 BH |
3132 | block_size, inq_buff, |
3133 | &hba[cntl_num]->drv[i]); | |
ddd47442 MM |
3134 | } else { |
3135 | /* initialize raid_level to indicate a free space */ | |
3136 | hba[cntl_num]->drv[i].raid_level = -1; | |
3137 | } | |
1da177e4 LT |
3138 | } |
3139 | kfree(ld_buff); | |
1da177e4 | 3140 | kfree(inq_buff); |
7c832835 | 3141 | } |
1da177e4 LT |
3142 | |
3143 | /* Function to find the first free pointer into our hba[] array */ | |
3144 | /* Returns -1 if no free entries are left. */ | |
3145 | static int alloc_cciss_hba(void) | |
3146 | { | |
799202cb | 3147 | int i; |
1da177e4 | 3148 | |
7c832835 | 3149 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
3150 | if (!hba[i]) { |
3151 | ctlr_info_t *p; | |
06ff37ff | 3152 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
3153 | if (!p) |
3154 | goto Enomem; | |
799202cb MM |
3155 | p->gendisk[0] = alloc_disk(1 << NWD_SHIFT); |
3156 | if (!p->gendisk[0]) | |
3157 | goto Enomem; | |
1da177e4 LT |
3158 | hba[i] = p; |
3159 | return i; | |
3160 | } | |
3161 | } | |
3162 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 3163 | " of %d controllers.\n", MAX_CTLR); |
799202cb MM |
3164 | return -1; |
3165 | Enomem: | |
1da177e4 | 3166 | printk(KERN_ERR "cciss: out of memory.\n"); |
1da177e4 LT |
3167 | return -1; |
3168 | } | |
3169 | ||
3170 | static void free_hba(int i) | |
3171 | { | |
3172 | ctlr_info_t *p = hba[i]; | |
3173 | int n; | |
3174 | ||
3175 | hba[i] = NULL; | |
799202cb | 3176 | for (n = 0; n < CISS_MAX_LUN; n++) |
1da177e4 LT |
3177 | put_disk(p->gendisk[n]); |
3178 | kfree(p); | |
3179 | } | |
3180 | ||
3181 | /* | |
3182 | * This is it. Find all the controllers and register them. I really hate | |
3183 | * stealing all these major device numbers. | |
3184 | * returns the number of block devices registered. | |
3185 | */ | |
3186 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 3187 | const struct pci_device_id *ent) |
1da177e4 | 3188 | { |
1da177e4 | 3189 | int i; |
799202cb | 3190 | int j = 0; |
1da177e4 | 3191 | int rc; |
40aabb58 | 3192 | int dac; |
1da177e4 | 3193 | |
1da177e4 | 3194 | i = alloc_cciss_hba(); |
7c832835 | 3195 | if (i < 0) |
e2019b58 | 3196 | return -1; |
1f8ef380 MM |
3197 | |
3198 | hba[i]->busy_initializing = 1; | |
3199 | ||
1da177e4 LT |
3200 | if (cciss_pci_init(hba[i], pdev) != 0) |
3201 | goto clean1; | |
3202 | ||
3203 | sprintf(hba[i]->devname, "cciss%d", i); | |
3204 | hba[i]->ctlr = i; | |
3205 | hba[i]->pdev = pdev; | |
3206 | ||
3207 | /* configure PCI DMA stuff */ | |
eb0df996 | 3208 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) |
40aabb58 | 3209 | dac = 1; |
eb0df996 | 3210 | else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) |
40aabb58 | 3211 | dac = 0; |
1da177e4 | 3212 | else { |
40aabb58 | 3213 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
3214 | goto clean1; |
3215 | } | |
3216 | ||
3217 | /* | |
3218 | * register with the major number, or get a dynamic major number | |
3219 | * by passing 0 as argument. This is done for greater than | |
3220 | * 8 controller support. | |
3221 | */ | |
3222 | if (i < MAX_CTLR_ORIG) | |
564de74a | 3223 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 3224 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3225 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 3226 | printk(KERN_ERR |
7c832835 BH |
3227 | "cciss: Unable to get major number %d for %s " |
3228 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 3229 | goto clean1; |
7c832835 | 3230 | } else { |
1da177e4 LT |
3231 | if (i >= MAX_CTLR_ORIG) |
3232 | hba[i]->major = rc; | |
3233 | } | |
3234 | ||
3235 | /* make sure the board interrupts are off */ | |
3236 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
7c832835 | 3237 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
69ab3912 | 3238 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
1da177e4 | 3239 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
7c832835 | 3240 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
1da177e4 LT |
3241 | goto clean2; |
3242 | } | |
40aabb58 BH |
3243 | |
3244 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 BH |
3245 | hba[i]->devname, pdev->device, pci_name(pdev), |
3246 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); | |
3247 | ||
3248 | hba[i]->cmd_pool_bits = | |
f880632f | 3249 | kmalloc(((hba[i]->nr_cmds + BITS_PER_LONG - |
7c832835 BH |
3250 | 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL); |
3251 | hba[i]->cmd_pool = (CommandList_struct *) | |
3252 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3253 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
3254 | &(hba[i]->cmd_pool_dhandle)); |
3255 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
3256 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3257 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
3258 | &(hba[i]->errinfo_pool_dhandle)); |
3259 | if ((hba[i]->cmd_pool_bits == NULL) | |
3260 | || (hba[i]->cmd_pool == NULL) | |
3261 | || (hba[i]->errinfo_pool == NULL)) { | |
3262 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
3263 | goto clean4; |
3264 | } | |
3da8b713 | 3265 | #ifdef CONFIG_CISS_SCSI_TAPE |
7c832835 BH |
3266 | hba[i]->scsi_rejects.complete = |
3267 | kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) * | |
f880632f | 3268 | (hba[i]->nr_cmds + 5), GFP_KERNEL); |
3da8b713 | 3269 | if (hba[i]->scsi_rejects.complete == NULL) { |
7c832835 | 3270 | printk(KERN_ERR "cciss: out of memory"); |
3da8b713 | 3271 | goto clean4; |
3272 | } | |
3273 | #endif | |
1da177e4 | 3274 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 3275 | |
7c832835 BH |
3276 | /* Initialize the pdev driver private data. |
3277 | have it point to hba[i]. */ | |
1da177e4 | 3278 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
3279 | /* command and error info recs zeroed out before |
3280 | they are used */ | |
3281 | memset(hba[i]->cmd_pool_bits, 0, | |
f880632f | 3282 | ((hba[i]->nr_cmds + BITS_PER_LONG - |
7c832835 | 3283 | 1) / BITS_PER_LONG) * sizeof(unsigned long)); |
1da177e4 | 3284 | |
7c832835 BH |
3285 | #ifdef CCISS_DEBUG |
3286 | printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n", i); | |
3287 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
3288 | |
3289 | cciss_getgeometry(i); | |
3290 | ||
3291 | cciss_scsi_setup(i); | |
3292 | ||
3293 | /* Turn the interrupts on so we can service requests */ | |
3294 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
3295 | ||
3296 | cciss_procinit(i); | |
92c4231a MM |
3297 | |
3298 | hba[i]->cciss_max_sectors = 2048; | |
3299 | ||
d6dbf42e | 3300 | hba[i]->busy_initializing = 0; |
1da177e4 | 3301 | |
799202cb | 3302 | do { |
ad2b9312 MM |
3303 | drive_info_struct *drv = &(hba[i]->drv[j]); |
3304 | struct gendisk *disk = hba[i]->gendisk[j]; | |
799202cb MM |
3305 | request_queue_t *q; |
3306 | ||
3307 | /* Check if the disk was allocated already */ | |
3308 | if (!disk){ | |
3309 | hba[i]->gendisk[j] = alloc_disk(1 << NWD_SHIFT); | |
3310 | disk = hba[i]->gendisk[j]; | |
3311 | } | |
3312 | ||
3313 | /* Check that the disk was able to be allocated */ | |
3314 | if (!disk) { | |
3315 | printk(KERN_ERR "cciss: unable to allocate memory for disk %d\n", j); | |
3316 | goto clean4; | |
3317 | } | |
ad2b9312 MM |
3318 | |
3319 | q = blk_init_queue(do_cciss_request, &hba[i]->lock); | |
3320 | if (!q) { | |
3321 | printk(KERN_ERR | |
7c832835 BH |
3322 | "cciss: unable to allocate queue for disk %d\n", |
3323 | j); | |
799202cb | 3324 | goto clean4; |
ad2b9312 MM |
3325 | } |
3326 | drv->queue = q; | |
3327 | ||
3328 | q->backing_dev_info.ra_pages = READ_AHEAD; | |
a9925a06 JA |
3329 | blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask); |
3330 | ||
3331 | /* This is a hardware imposed limit. */ | |
3332 | blk_queue_max_hw_segments(q, MAXSGENTRIES); | |
1da177e4 | 3333 | |
a9925a06 JA |
3334 | /* This is a limit in the driver and could be eliminated. */ |
3335 | blk_queue_max_phys_segments(q, MAXSGENTRIES); | |
1da177e4 | 3336 | |
92c4231a | 3337 | blk_queue_max_sectors(q, hba[i]->cciss_max_sectors); |
1da177e4 | 3338 | |
a9925a06 | 3339 | blk_queue_softirq_done(q, cciss_softirq_done); |
1da177e4 | 3340 | |
ad2b9312 | 3341 | q->queuedata = hba[i]; |
1da177e4 | 3342 | sprintf(disk->disk_name, "cciss/c%dd%d", i, j); |
1da177e4 LT |
3343 | disk->major = hba[i]->major; |
3344 | disk->first_minor = j << NWD_SHIFT; | |
3345 | disk->fops = &cciss_fops; | |
ad2b9312 | 3346 | disk->queue = q; |
1da177e4 | 3347 | disk->private_data = drv; |
27c0ff86 | 3348 | disk->driverfs_dev = &pdev->dev; |
1da177e4 LT |
3349 | /* we must register the controller even if no disks exist */ |
3350 | /* this is for the online array utilities */ | |
7c832835 | 3351 | if (!drv->heads && j) |
1da177e4 | 3352 | continue; |
ad2b9312 | 3353 | blk_queue_hardsect_size(q, drv->block_size); |
1da177e4 LT |
3354 | set_capacity(disk, drv->nr_blocks); |
3355 | add_disk(disk); | |
799202cb MM |
3356 | j++; |
3357 | } while (j <= hba[i]->highest_lun); | |
ad2b9312 | 3358 | |
e2019b58 | 3359 | return 1; |
1da177e4 | 3360 | |
7c832835 | 3361 | clean4: |
3da8b713 | 3362 | #ifdef CONFIG_CISS_SCSI_TAPE |
1acc0b0b | 3363 | kfree(hba[i]->scsi_rejects.complete); |
3da8b713 | 3364 | #endif |
6044ec88 | 3365 | kfree(hba[i]->cmd_pool_bits); |
7c832835 | 3366 | if (hba[i]->cmd_pool) |
1da177e4 | 3367 | pci_free_consistent(hba[i]->pdev, |
f880632f | 3368 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
3369 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
3370 | if (hba[i]->errinfo_pool) | |
1da177e4 | 3371 | pci_free_consistent(hba[i]->pdev, |
f880632f | 3372 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
3373 | hba[i]->errinfo_pool, |
3374 | hba[i]->errinfo_pool_dhandle); | |
fb86a35b | 3375 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
7c832835 | 3376 | clean2: |
1da177e4 | 3377 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3378 | clean1: |
1f8ef380 | 3379 | hba[i]->busy_initializing = 0; |
799202cb MM |
3380 | /* cleanup any queues that may have been initialized */ |
3381 | for (j=0; j <= hba[i]->highest_lun; j++){ | |
3382 | drive_info_struct *drv = &(hba[i]->drv[j]); | |
3383 | if (drv->queue) | |
3384 | blk_cleanup_queue(drv->queue); | |
3385 | } | |
872225ca MM |
3386 | /* |
3387 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3388 | * Smart Array controllers that pci_enable_device does not undo | |
3389 | */ | |
799202cb | 3390 | pci_release_regions(pdev); |
799202cb | 3391 | pci_set_drvdata(pdev, NULL); |
61808c2b | 3392 | free_hba(i); |
e2019b58 | 3393 | return -1; |
1da177e4 LT |
3394 | } |
3395 | ||
7c832835 | 3396 | static void __devexit cciss_remove_one(struct pci_dev *pdev) |
1da177e4 LT |
3397 | { |
3398 | ctlr_info_t *tmp_ptr; | |
3399 | int i, j; | |
3400 | char flush_buf[4]; | |
7c832835 | 3401 | int return_code; |
1da177e4 | 3402 | |
7c832835 BH |
3403 | if (pci_get_drvdata(pdev) == NULL) { |
3404 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
3405 | return; |
3406 | } | |
3407 | tmp_ptr = pci_get_drvdata(pdev); | |
3408 | i = tmp_ptr->ctlr; | |
7c832835 | 3409 | if (hba[i] == NULL) { |
1da177e4 | 3410 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 3411 | "already be removed \n"); |
1da177e4 LT |
3412 | return; |
3413 | } | |
3414 | /* Turn board interrupts off and send the flush cache command */ | |
3415 | /* sendcmd will turn off interrupt, and send the flush... | |
7c832835 | 3416 | * To write all data in the battery backed cache to disks */ |
1da177e4 LT |
3417 | memset(flush_buf, 0, 4); |
3418 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL, | |
7c832835 BH |
3419 | TYPE_CMD); |
3420 | if (return_code != IO_OK) { | |
3421 | printk(KERN_WARNING "Error Flushing cache on controller %d\n", | |
3422 | i); | |
1da177e4 | 3423 | } |
fb86a35b MM |
3424 | free_irq(hba[i]->intr[2], hba[i]); |
3425 | ||
3426 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3427 | if (hba[i]->msix_vector) |
3428 | pci_disable_msix(hba[i]->pdev); | |
3429 | else if (hba[i]->msi_vector) | |
3430 | pci_disable_msi(hba[i]->pdev); | |
3431 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 3432 | |
1da177e4 | 3433 | iounmap(hba[i]->vaddr); |
7c832835 | 3434 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
1da177e4 | 3435 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 BH |
3436 | remove_proc_entry(hba[i]->devname, proc_cciss); |
3437 | ||
1da177e4 | 3438 | /* remove it from the disk list */ |
799202cb | 3439 | for (j = 0; j < CISS_MAX_LUN; j++) { |
1da177e4 | 3440 | struct gendisk *disk = hba[i]->gendisk[j]; |
6f5a0f7c | 3441 | if (disk) { |
3442 | request_queue_t *q = disk->queue; | |
3443 | ||
7c832835 | 3444 | if (disk->flags & GENHD_FL_UP) |
6f5a0f7c | 3445 | del_gendisk(disk); |
3446 | if (q) | |
3447 | blk_cleanup_queue(q); | |
6a445d3b | 3448 | } |
1da177e4 LT |
3449 | } |
3450 | ||
f880632f | 3451 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
1da177e4 | 3452 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
f880632f | 3453 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 | 3454 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
1da177e4 | 3455 | kfree(hba[i]->cmd_pool_bits); |
3da8b713 | 3456 | #ifdef CONFIG_CISS_SCSI_TAPE |
3457 | kfree(hba[i]->scsi_rejects.complete); | |
3458 | #endif | |
872225ca MM |
3459 | /* |
3460 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3461 | * Smart Array controllers that pci_enable_device does not undo | |
3462 | */ | |
7c832835 | 3463 | pci_release_regions(pdev); |
4e570309 | 3464 | pci_set_drvdata(pdev, NULL); |
1da177e4 | 3465 | free_hba(i); |
7c832835 | 3466 | } |
1da177e4 LT |
3467 | |
3468 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
3469 | .name = "cciss", |
3470 | .probe = cciss_init_one, | |
3471 | .remove = __devexit_p(cciss_remove_one), | |
3472 | .id_table = cciss_pci_device_id, /* id_table */ | |
1da177e4 LT |
3473 | }; |
3474 | ||
3475 | /* | |
3476 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 3477 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
3478 | */ |
3479 | static int __init cciss_init(void) | |
3480 | { | |
3481 | printk(KERN_INFO DRIVER_NAME "\n"); | |
3482 | ||
3483 | /* Register for our PCI devices */ | |
9bfab8ce | 3484 | return pci_register_driver(&cciss_pci_driver); |
1da177e4 LT |
3485 | } |
3486 | ||
3487 | static void __exit cciss_cleanup(void) | |
3488 | { | |
3489 | int i; | |
3490 | ||
3491 | pci_unregister_driver(&cciss_pci_driver); | |
3492 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
3493 | for (i = 0; i < MAX_CTLR; i++) { |
3494 | if (hba[i] != NULL) { | |
1da177e4 | 3495 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 3496 | " controller %d\n", i); |
1da177e4 LT |
3497 | cciss_remove_one(hba[i]->pdev); |
3498 | } | |
3499 | } | |
3500 | remove_proc_entry("cciss", proc_root_driver); | |
3501 | } | |
3502 | ||
33079b21 MM |
3503 | static void fail_all_cmds(unsigned long ctlr) |
3504 | { | |
3505 | /* If we get here, the board is apparently dead. */ | |
3506 | ctlr_info_t *h = hba[ctlr]; | |
3507 | CommandList_struct *c; | |
3508 | unsigned long flags; | |
3509 | ||
3510 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); | |
7c832835 | 3511 | h->alive = 0; /* the controller apparently died... */ |
33079b21 MM |
3512 | |
3513 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
3514 | ||
7c832835 | 3515 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
33079b21 MM |
3516 | |
3517 | /* move everything off the request queue onto the completed queue */ | |
7c832835 | 3518 | while ((c = h->reqQ) != NULL) { |
33079b21 MM |
3519 | removeQ(&(h->reqQ), c); |
3520 | h->Qdepth--; | |
7c832835 | 3521 | addQ(&(h->cmpQ), c); |
33079b21 MM |
3522 | } |
3523 | ||
3524 | /* Now, fail everything on the completed queue with a HW error */ | |
7c832835 | 3525 | while ((c = h->cmpQ) != NULL) { |
33079b21 MM |
3526 | removeQ(&h->cmpQ, c); |
3527 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
3528 | if (c->cmd_type == CMD_RWREQ) { | |
3529 | complete_command(h, c, 0); | |
3530 | } else if (c->cmd_type == CMD_IOCTL_PEND) | |
3531 | complete(c->waiting); | |
3532 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
3533 | else if (c->cmd_type == CMD_SCSI) |
3534 | complete_scsi_command(c, 0, 0); | |
33079b21 MM |
3535 | #endif |
3536 | } | |
3537 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
3538 | return; | |
3539 | } | |
3540 | ||
1da177e4 LT |
3541 | module_init(cciss_init); |
3542 | module_exit(cciss_cleanup); |