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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)) | |
1883c5ab MM |
50 | #define DRIVER_NAME "HP CISS Driver (v 3.6.10)" |
51 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3,6,10) | |
1da177e4 LT |
52 | |
53 | /* Embedded module documentation macros - see modules.h */ | |
54 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
1883c5ab | 55 | MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 3.6.10"); |
1da177e4 | 56 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
1883c5ab | 57 | " SA6i P600 P800 P400 P400i E200 E200i E500"); |
1da177e4 LT |
58 | MODULE_LICENSE("GPL"); |
59 | ||
60 | #include "cciss_cmd.h" | |
61 | #include "cciss.h" | |
62 | #include <linux/cciss_ioctl.h> | |
63 | ||
64 | /* define the PCI info for the cards we can control */ | |
65 | static const struct pci_device_id cciss_pci_device_id[] = { | |
f82ccdb9 BH |
66 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
67 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, | |
68 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, | |
69 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, | |
70 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, | |
71 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, | |
72 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, | |
73 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, | |
74 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, | |
75 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, | |
76 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, | |
77 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, | |
78 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, | |
79 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, | |
80 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, | |
81 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, | |
82 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, | |
83 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, | |
1883c5ab | 84 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3233}, |
1da177e4 LT |
85 | {0,} |
86 | }; | |
7c832835 | 87 | |
1da177e4 LT |
88 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
89 | ||
1da177e4 LT |
90 | /* board_id = Subsystem Device ID & Vendor ID |
91 | * product = Marketing Name for the board | |
7c832835 | 92 | * access = Address of the struct of function pointers |
1da177e4 LT |
93 | */ |
94 | static struct board_type products[] = { | |
7c832835 BH |
95 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
96 | {0x40800E11, "Smart Array 5i", &SA5B_access}, | |
97 | {0x40820E11, "Smart Array 532", &SA5B_access}, | |
98 | {0x40830E11, "Smart Array 5312", &SA5B_access}, | |
99 | {0x409A0E11, "Smart Array 641", &SA5_access}, | |
100 | {0x409B0E11, "Smart Array 642", &SA5_access}, | |
101 | {0x409C0E11, "Smart Array 6400", &SA5_access}, | |
102 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, | |
103 | {0x40910E11, "Smart Array 6i", &SA5_access}, | |
104 | {0x3225103C, "Smart Array P600", &SA5_access}, | |
105 | {0x3223103C, "Smart Array P800", &SA5_access}, | |
106 | {0x3234103C, "Smart Array P400", &SA5_access}, | |
107 | {0x3235103C, "Smart Array P400i", &SA5_access}, | |
108 | {0x3211103C, "Smart Array E200i", &SA5_access}, | |
109 | {0x3212103C, "Smart Array E200", &SA5_access}, | |
110 | {0x3213103C, "Smart Array E200i", &SA5_access}, | |
111 | {0x3214103C, "Smart Array E200i", &SA5_access}, | |
112 | {0x3215103C, "Smart Array E200i", &SA5_access}, | |
1883c5ab | 113 | {0x3233103C, "Smart Array E500", &SA5_access}, |
1da177e4 LT |
114 | }; |
115 | ||
d14c4ab5 | 116 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
7c832835 | 117 | #define MAX_CONFIG_WAIT 30000 |
1da177e4 LT |
118 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
119 | ||
120 | /*define how many times we will try a command because of bus resets */ | |
121 | #define MAX_CMD_RETRIES 3 | |
122 | ||
123 | #define READ_AHEAD 1024 | |
7c832835 | 124 | #define NR_CMDS 384 /* #commands that can be outstanding */ |
1da177e4 LT |
125 | #define MAX_CTLR 32 |
126 | ||
127 | /* Originally cciss driver only supports 8 major numbers */ | |
128 | #define MAX_CTLR_ORIG 8 | |
129 | ||
1da177e4 LT |
130 | static ctlr_info_t *hba[MAX_CTLR]; |
131 | ||
132 | static void do_cciss_request(request_queue_t *q); | |
7d12e780 | 133 | static irqreturn_t do_cciss_intr(int irq, void *dev_id); |
1da177e4 LT |
134 | static int cciss_open(struct inode *inode, struct file *filep); |
135 | static int cciss_release(struct inode *inode, struct file *filep); | |
7c832835 BH |
136 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
137 | unsigned int cmd, unsigned long arg); | |
a885c8c4 | 138 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 LT |
139 | |
140 | static int revalidate_allvol(ctlr_info_t *host); | |
141 | static int cciss_revalidate(struct gendisk *disk); | |
ddd47442 | 142 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk); |
7c832835 BH |
143 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, |
144 | int clear_all); | |
1da177e4 | 145 | |
00988a35 MMOD |
146 | static void cciss_read_capacity(int ctlr, int logvol, int withirq, |
147 | sector_t *total_size, unsigned int *block_size); | |
148 | static void cciss_read_capacity_16(int ctlr, int logvol, int withirq, | |
149 | sector_t *total_size, unsigned int *block_size); | |
150 | static void cciss_geometry_inquiry(int ctlr, int logvol, | |
151 | int withirq, sector_t total_size, | |
152 | unsigned int block_size, InquiryData_struct *inq_buff, | |
7c832835 | 153 | drive_info_struct *drv); |
1da177e4 | 154 | static void cciss_getgeometry(int cntl_num); |
7c832835 BH |
155 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
156 | __u32); | |
157 | static void start_io(ctlr_info_t *h); | |
158 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, | |
159 | unsigned int use_unit_num, unsigned int log_unit, | |
160 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); | |
161 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, | |
162 | unsigned int use_unit_num, unsigned int log_unit, | |
163 | __u8 page_code, int cmd_type); | |
1da177e4 | 164 | |
33079b21 MM |
165 | static void fail_all_cmds(unsigned long ctlr); |
166 | ||
1da177e4 | 167 | #ifdef CONFIG_PROC_FS |
7c832835 BH |
168 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
169 | int length, int *eof, void *data); | |
1da177e4 LT |
170 | static void cciss_procinit(int i); |
171 | #else | |
7c832835 BH |
172 | static void cciss_procinit(int i) |
173 | { | |
174 | } | |
175 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
176 | |
177 | #ifdef CONFIG_COMPAT | |
178 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg); | |
179 | #endif | |
180 | ||
7c832835 BH |
181 | static struct block_device_operations cciss_fops = { |
182 | .owner = THIS_MODULE, | |
183 | .open = cciss_open, | |
184 | .release = cciss_release, | |
185 | .ioctl = cciss_ioctl, | |
186 | .getgeo = cciss_getgeo, | |
1da177e4 | 187 | #ifdef CONFIG_COMPAT |
7c832835 | 188 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 189 | #endif |
7c832835 | 190 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
191 | }; |
192 | ||
193 | /* | |
194 | * Enqueuing and dequeuing functions for cmdlists. | |
195 | */ | |
196 | static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c) | |
197 | { | |
7c832835 BH |
198 | if (*Qptr == NULL) { |
199 | *Qptr = c; | |
200 | c->next = c->prev = c; | |
201 | } else { | |
202 | c->prev = (*Qptr)->prev; | |
203 | c->next = (*Qptr); | |
204 | (*Qptr)->prev->next = c; | |
205 | (*Qptr)->prev = c; | |
206 | } | |
1da177e4 LT |
207 | } |
208 | ||
7c832835 BH |
209 | static inline CommandList_struct *removeQ(CommandList_struct **Qptr, |
210 | CommandList_struct *c) | |
1da177e4 | 211 | { |
7c832835 BH |
212 | if (c && c->next != c) { |
213 | if (*Qptr == c) | |
214 | *Qptr = c->next; | |
215 | c->prev->next = c->next; | |
216 | c->next->prev = c->prev; | |
217 | } else { | |
218 | *Qptr = NULL; | |
219 | } | |
220 | return c; | |
1da177e4 LT |
221 | } |
222 | ||
223 | #include "cciss_scsi.c" /* For SCSI tape support */ | |
224 | ||
225 | #ifdef CONFIG_PROC_FS | |
226 | ||
227 | /* | |
228 | * Report information about this controller. | |
229 | */ | |
230 | #define ENG_GIG 1000000000 | |
231 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
232 | #define RAID_UNKNOWN 6 | |
7c832835 BH |
233 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
234 | "UNKNOWN" | |
235 | }; | |
1da177e4 LT |
236 | |
237 | static struct proc_dir_entry *proc_cciss; | |
238 | ||
7c832835 BH |
239 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
240 | int length, int *eof, void *data) | |
1da177e4 | 241 | { |
7c832835 BH |
242 | off_t pos = 0; |
243 | off_t len = 0; | |
244 | int size, i, ctlr; | |
245 | ctlr_info_t *h = (ctlr_info_t *) data; | |
246 | drive_info_struct *drv; | |
1da177e4 | 247 | unsigned long flags; |
7c832835 | 248 | sector_t vol_sz, vol_sz_frac; |
1da177e4 | 249 | |
7c832835 | 250 | ctlr = h->ctlr; |
1da177e4 LT |
251 | |
252 | /* prevent displaying bogus info during configuration | |
253 | * or deconfiguration of a logical volume | |
254 | */ | |
255 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
256 | if (h->busy_configuring) { | |
257 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 258 | return -EBUSY; |
1da177e4 LT |
259 | } |
260 | h->busy_configuring = 1; | |
261 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
262 | ||
7c832835 BH |
263 | size = sprintf(buffer, "%s: HP %s Controller\n" |
264 | "Board ID: 0x%08lx\n" | |
265 | "Firmware Version: %c%c%c%c\n" | |
266 | "IRQ: %d\n" | |
267 | "Logical drives: %d\n" | |
268 | "Current Q depth: %d\n" | |
269 | "Current # commands on controller: %d\n" | |
270 | "Max Q depth since init: %d\n" | |
271 | "Max # commands on controller since init: %d\n" | |
272 | "Max SG entries since init: %d\n\n", | |
273 | h->devname, | |
274 | h->product_name, | |
275 | (unsigned long)h->board_id, | |
276 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
277 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], | |
278 | h->num_luns, h->Qdepth, h->commands_outstanding, | |
279 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
280 | ||
281 | pos += size; | |
282 | len += size; | |
1da177e4 | 283 | cciss_proc_tape_report(ctlr, buffer, &pos, &len); |
7c832835 | 284 | for (i = 0; i <= h->highest_lun; i++) { |
1da177e4 | 285 | |
7c832835 | 286 | drv = &h->drv[i]; |
ddd47442 | 287 | if (drv->heads == 0) |
1da177e4 LT |
288 | continue; |
289 | ||
290 | vol_sz = drv->nr_blocks; | |
291 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
292 | vol_sz_frac *= 100; | |
293 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
294 | ||
295 | if (drv->raid_level > 5) | |
296 | drv->raid_level = RAID_UNKNOWN; | |
7c832835 BH |
297 | size = sprintf(buffer + len, "cciss/c%dd%d:" |
298 | "\t%4u.%02uGB\tRAID %s\n", | |
299 | ctlr, i, (int)vol_sz, (int)vol_sz_frac, | |
300 | raid_label[drv->raid_level]); | |
301 | pos += size; | |
302 | len += size; | |
303 | } | |
304 | ||
305 | *eof = 1; | |
306 | *start = buffer + offset; | |
307 | len -= offset; | |
308 | if (len > length) | |
309 | len = length; | |
1da177e4 | 310 | h->busy_configuring = 0; |
7c832835 | 311 | return len; |
1da177e4 LT |
312 | } |
313 | ||
7c832835 BH |
314 | static int |
315 | cciss_proc_write(struct file *file, const char __user *buffer, | |
316 | unsigned long count, void *data) | |
1da177e4 LT |
317 | { |
318 | unsigned char cmd[80]; | |
319 | int len; | |
320 | #ifdef CONFIG_CISS_SCSI_TAPE | |
321 | ctlr_info_t *h = (ctlr_info_t *) data; | |
322 | int rc; | |
323 | #endif | |
324 | ||
7c832835 BH |
325 | if (count > sizeof(cmd) - 1) |
326 | return -EINVAL; | |
327 | if (copy_from_user(cmd, buffer, count)) | |
328 | return -EFAULT; | |
1da177e4 LT |
329 | cmd[count] = '\0'; |
330 | len = strlen(cmd); // above 3 lines ensure safety | |
7c832835 | 331 | if (len && cmd[len - 1] == '\n') |
1da177e4 LT |
332 | cmd[--len] = '\0'; |
333 | # ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
334 | if (strcmp("engage scsi", cmd) == 0) { |
335 | rc = cciss_engage_scsi(h->ctlr); | |
336 | if (rc != 0) | |
337 | return -rc; | |
338 | return count; | |
339 | } | |
340 | /* might be nice to have "disengage" too, but it's not | |
341 | safely possible. (only 1 module use count, lock issues.) */ | |
1da177e4 LT |
342 | # endif |
343 | return -EINVAL; | |
344 | } | |
345 | ||
346 | /* | |
347 | * Get us a file in /proc/cciss that says something about each controller. | |
348 | * Create /proc/cciss if it doesn't exist yet. | |
349 | */ | |
350 | static void __devinit cciss_procinit(int i) | |
351 | { | |
352 | struct proc_dir_entry *pde; | |
353 | ||
7c832835 BH |
354 | if (proc_cciss == NULL) { |
355 | proc_cciss = proc_mkdir("cciss", proc_root_driver); | |
356 | if (!proc_cciss) | |
1da177e4 | 357 | return; |
7c832835 | 358 | } |
1da177e4 | 359 | |
7c832835 BH |
360 | pde = create_proc_read_entry(hba[i]->devname, |
361 | S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH, | |
362 | proc_cciss, cciss_proc_get_info, hba[i]); | |
1da177e4 LT |
363 | pde->write_proc = cciss_proc_write; |
364 | } | |
7c832835 | 365 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 366 | |
7c832835 BH |
367 | /* |
368 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 369 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
370 | * which ones are free or in use. For operations that can wait for kmalloc |
371 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
372 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
373 | */ | |
374 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
375 | { |
376 | CommandList_struct *c; | |
7c832835 | 377 | int i; |
1da177e4 LT |
378 | u64bit temp64; |
379 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
380 | ||
7c832835 BH |
381 | if (!get_from_pool) { |
382 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
383 | sizeof(CommandList_struct), &cmd_dma_handle); | |
384 | if (c == NULL) | |
385 | return NULL; | |
1da177e4 LT |
386 | memset(c, 0, sizeof(CommandList_struct)); |
387 | ||
33079b21 MM |
388 | c->cmdindex = -1; |
389 | ||
7c832835 BH |
390 | c->err_info = (ErrorInfo_struct *) |
391 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
392 | &err_dma_handle); | |
393 | ||
394 | if (c->err_info == NULL) { | |
395 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
396 | sizeof(CommandList_struct), c, cmd_dma_handle); |
397 | return NULL; | |
398 | } | |
399 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
400 | } else { /* get it out of the controllers pool */ |
401 | ||
402 | do { | |
403 | i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS); | |
404 | if (i == NR_CMDS) | |
405 | return NULL; | |
406 | } while (test_and_set_bit | |
407 | (i & (BITS_PER_LONG - 1), | |
408 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
409 | #ifdef CCISS_DEBUG |
410 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
411 | #endif | |
7c832835 | 412 | c = h->cmd_pool + i; |
1da177e4 | 413 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
414 | cmd_dma_handle = h->cmd_pool_dhandle |
415 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
416 | c->err_info = h->errinfo_pool + i; |
417 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
418 | err_dma_handle = h->errinfo_pool_dhandle |
419 | + i * sizeof(ErrorInfo_struct); | |
420 | h->nr_allocs++; | |
33079b21 MM |
421 | |
422 | c->cmdindex = i; | |
7c832835 | 423 | } |
1da177e4 LT |
424 | |
425 | c->busaddr = (__u32) cmd_dma_handle; | |
7c832835 | 426 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
427 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
428 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
429 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 430 | |
7c832835 BH |
431 | c->ctlr = h->ctlr; |
432 | return c; | |
1da177e4 LT |
433 | } |
434 | ||
7c832835 BH |
435 | /* |
436 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
437 | */ |
438 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
439 | { | |
440 | int i; | |
441 | u64bit temp64; | |
442 | ||
7c832835 | 443 | if (!got_from_pool) { |
1da177e4 LT |
444 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
445 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
446 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
447 | c->err_info, (dma_addr_t) temp64.val); | |
448 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
449 | c, (dma_addr_t) c->busaddr); | |
450 | } else { | |
1da177e4 | 451 | i = c - h->cmd_pool; |
7c832835 BH |
452 | clear_bit(i & (BITS_PER_LONG - 1), |
453 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
454 | h->nr_frees++; | |
455 | } | |
1da177e4 LT |
456 | } |
457 | ||
458 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
459 | { | |
7c832835 | 460 | return disk->queue->queuedata; |
1da177e4 LT |
461 | } |
462 | ||
463 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
464 | { | |
465 | return disk->private_data; | |
466 | } | |
467 | ||
468 | /* | |
469 | * Open. Make sure the device is really there. | |
470 | */ | |
471 | static int cciss_open(struct inode *inode, struct file *filep) | |
472 | { | |
473 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
474 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
475 | ||
476 | #ifdef CCISS_DEBUG | |
477 | printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name); | |
7c832835 | 478 | #endif /* CCISS_DEBUG */ |
1da177e4 | 479 | |
ddd47442 MM |
480 | if (host->busy_initializing || drv->busy_configuring) |
481 | return -EBUSY; | |
1da177e4 LT |
482 | /* |
483 | * Root is allowed to open raw volume zero even if it's not configured | |
484 | * so array config can still work. Root is also allowed to open any | |
485 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
486 | * disk information. I don't think I really like this | |
487 | * but I'm already using way to many device nodes to claim another one | |
488 | * for "raw controller". | |
489 | */ | |
490 | if (drv->nr_blocks == 0) { | |
7c832835 | 491 | if (iminor(inode) != 0) { /* not node 0? */ |
1da177e4 LT |
492 | /* if not node 0 make sure it is a partition = 0 */ |
493 | if (iminor(inode) & 0x0f) { | |
7c832835 | 494 | return -ENXIO; |
1da177e4 LT |
495 | /* if it is, make sure we have a LUN ID */ |
496 | } else if (drv->LunID == 0) { | |
497 | return -ENXIO; | |
498 | } | |
499 | } | |
500 | if (!capable(CAP_SYS_ADMIN)) | |
501 | return -EPERM; | |
502 | } | |
503 | drv->usage_count++; | |
504 | host->usage_count++; | |
505 | return 0; | |
506 | } | |
7c832835 | 507 | |
1da177e4 LT |
508 | /* |
509 | * Close. Sync first. | |
510 | */ | |
511 | static int cciss_release(struct inode *inode, struct file *filep) | |
512 | { | |
513 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
514 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
515 | ||
516 | #ifdef CCISS_DEBUG | |
7c832835 BH |
517 | printk(KERN_DEBUG "cciss_release %s\n", |
518 | inode->i_bdev->bd_disk->disk_name); | |
519 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
520 | |
521 | drv->usage_count--; | |
522 | host->usage_count--; | |
523 | return 0; | |
524 | } | |
525 | ||
526 | #ifdef CONFIG_COMPAT | |
527 | ||
528 | static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
529 | { | |
530 | int ret; | |
531 | lock_kernel(); | |
532 | ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg); | |
533 | unlock_kernel(); | |
534 | return ret; | |
535 | } | |
536 | ||
7c832835 BH |
537 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
538 | unsigned long arg); | |
539 | static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, | |
540 | unsigned long arg); | |
1da177e4 LT |
541 | |
542 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
543 | { | |
544 | switch (cmd) { | |
545 | case CCISS_GETPCIINFO: | |
546 | case CCISS_GETINTINFO: | |
547 | case CCISS_SETINTINFO: | |
548 | case CCISS_GETNODENAME: | |
549 | case CCISS_SETNODENAME: | |
550 | case CCISS_GETHEARTBEAT: | |
551 | case CCISS_GETBUSTYPES: | |
552 | case CCISS_GETFIRMVER: | |
553 | case CCISS_GETDRIVVER: | |
554 | case CCISS_REVALIDVOLS: | |
555 | case CCISS_DEREGDISK: | |
556 | case CCISS_REGNEWDISK: | |
557 | case CCISS_REGNEWD: | |
558 | case CCISS_RESCANDISK: | |
559 | case CCISS_GETLUNINFO: | |
560 | return do_ioctl(f, cmd, arg); | |
561 | ||
562 | case CCISS_PASSTHRU32: | |
563 | return cciss_ioctl32_passthru(f, cmd, arg); | |
564 | case CCISS_BIG_PASSTHRU32: | |
565 | return cciss_ioctl32_big_passthru(f, cmd, arg); | |
566 | ||
567 | default: | |
568 | return -ENOIOCTLCMD; | |
569 | } | |
570 | } | |
571 | ||
7c832835 BH |
572 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
573 | unsigned long arg) | |
1da177e4 LT |
574 | { |
575 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 576 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
577 | IOCTL_Command_struct arg64; |
578 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
579 | int err; | |
580 | u32 cp; | |
581 | ||
582 | err = 0; | |
7c832835 BH |
583 | err |= |
584 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
585 | sizeof(arg64.LUN_info)); | |
586 | err |= | |
587 | copy_from_user(&arg64.Request, &arg32->Request, | |
588 | sizeof(arg64.Request)); | |
589 | err |= | |
590 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
591 | sizeof(arg64.error_info)); | |
1da177e4 LT |
592 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
593 | err |= get_user(cp, &arg32->buf); | |
594 | arg64.buf = compat_ptr(cp); | |
595 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
596 | ||
597 | if (err) | |
598 | return -EFAULT; | |
599 | ||
7c832835 | 600 | err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
601 | if (err) |
602 | return err; | |
7c832835 BH |
603 | err |= |
604 | copy_in_user(&arg32->error_info, &p->error_info, | |
605 | sizeof(arg32->error_info)); | |
1da177e4 LT |
606 | if (err) |
607 | return -EFAULT; | |
608 | return err; | |
609 | } | |
610 | ||
7c832835 BH |
611 | static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, |
612 | unsigned long arg) | |
1da177e4 LT |
613 | { |
614 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 615 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 616 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
617 | BIG_IOCTL_Command_struct __user *p = |
618 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
619 | int err; |
620 | u32 cp; | |
621 | ||
622 | err = 0; | |
7c832835 BH |
623 | err |= |
624 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
625 | sizeof(arg64.LUN_info)); | |
626 | err |= | |
627 | copy_from_user(&arg64.Request, &arg32->Request, | |
628 | sizeof(arg64.Request)); | |
629 | err |= | |
630 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
631 | sizeof(arg64.error_info)); | |
1da177e4 LT |
632 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
633 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
634 | err |= get_user(cp, &arg32->buf); | |
635 | arg64.buf = compat_ptr(cp); | |
636 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
637 | ||
638 | if (err) | |
7c832835 | 639 | return -EFAULT; |
1da177e4 | 640 | |
7c832835 | 641 | err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
642 | if (err) |
643 | return err; | |
7c832835 BH |
644 | err |= |
645 | copy_in_user(&arg32->error_info, &p->error_info, | |
646 | sizeof(arg32->error_info)); | |
1da177e4 LT |
647 | if (err) |
648 | return -EFAULT; | |
649 | return err; | |
650 | } | |
651 | #endif | |
a885c8c4 CH |
652 | |
653 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
654 | { | |
655 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
656 | ||
657 | if (!drv->cylinders) | |
658 | return -ENXIO; | |
659 | ||
660 | geo->heads = drv->heads; | |
661 | geo->sectors = drv->sectors; | |
662 | geo->cylinders = drv->cylinders; | |
663 | return 0; | |
664 | } | |
665 | ||
1da177e4 | 666 | /* |
7c832835 | 667 | * ioctl |
1da177e4 | 668 | */ |
7c832835 BH |
669 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
670 | unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
671 | { |
672 | struct block_device *bdev = inode->i_bdev; | |
673 | struct gendisk *disk = bdev->bd_disk; | |
674 | ctlr_info_t *host = get_host(disk); | |
675 | drive_info_struct *drv = get_drv(disk); | |
676 | int ctlr = host->ctlr; | |
677 | void __user *argp = (void __user *)arg; | |
678 | ||
679 | #ifdef CCISS_DEBUG | |
680 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
681 | #endif /* CCISS_DEBUG */ |
682 | ||
683 | switch (cmd) { | |
1da177e4 | 684 | case CCISS_GETPCIINFO: |
7c832835 BH |
685 | { |
686 | cciss_pci_info_struct pciinfo; | |
687 | ||
688 | if (!arg) | |
689 | return -EINVAL; | |
690 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
691 | pciinfo.bus = host->pdev->bus->number; | |
692 | pciinfo.dev_fn = host->pdev->devfn; | |
693 | pciinfo.board_id = host->board_id; | |
694 | if (copy_to_user | |
695 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
696 | return -EFAULT; | |
697 | return 0; | |
698 | } | |
1da177e4 | 699 | case CCISS_GETINTINFO: |
7c832835 BH |
700 | { |
701 | cciss_coalint_struct intinfo; | |
702 | if (!arg) | |
703 | return -EINVAL; | |
704 | intinfo.delay = | |
705 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
706 | intinfo.count = | |
707 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
708 | if (copy_to_user | |
709 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
710 | return -EFAULT; | |
711 | return 0; | |
712 | } | |
1da177e4 | 713 | case CCISS_SETINTINFO: |
1da177e4 | 714 | { |
7c832835 BH |
715 | cciss_coalint_struct intinfo; |
716 | unsigned long flags; | |
717 | int i; | |
718 | ||
719 | if (!arg) | |
720 | return -EINVAL; | |
721 | if (!capable(CAP_SYS_ADMIN)) | |
722 | return -EPERM; | |
723 | if (copy_from_user | |
724 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
725 | return -EFAULT; | |
726 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
727 | { | |
728 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
729 | return -EINVAL; | |
730 | } | |
731 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
732 | /* Update the field, and then ring the doorbell */ | |
733 | writel(intinfo.delay, | |
734 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
735 | writel(intinfo.count, | |
736 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
737 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
738 | ||
739 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
740 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
741 | & CFGTBL_ChangeReq)) | |
742 | break; | |
743 | /* delay and try again */ | |
744 | udelay(1000); | |
745 | } | |
746 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
747 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
748 | return -EAGAIN; | |
749 | return 0; | |
1da177e4 | 750 | } |
1da177e4 | 751 | case CCISS_GETNODENAME: |
7c832835 BH |
752 | { |
753 | NodeName_type NodeName; | |
754 | int i; | |
755 | ||
756 | if (!arg) | |
757 | return -EINVAL; | |
758 | for (i = 0; i < 16; i++) | |
759 | NodeName[i] = | |
760 | readb(&host->cfgtable->ServerName[i]); | |
761 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
762 | return -EFAULT; | |
763 | return 0; | |
764 | } | |
1da177e4 | 765 | case CCISS_SETNODENAME: |
7c832835 BH |
766 | { |
767 | NodeName_type NodeName; | |
768 | unsigned long flags; | |
769 | int i; | |
770 | ||
771 | if (!arg) | |
772 | return -EINVAL; | |
773 | if (!capable(CAP_SYS_ADMIN)) | |
774 | return -EPERM; | |
775 | ||
776 | if (copy_from_user | |
777 | (NodeName, argp, sizeof(NodeName_type))) | |
778 | return -EFAULT; | |
779 | ||
780 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
781 | ||
782 | /* Update the field, and then ring the doorbell */ | |
783 | for (i = 0; i < 16; i++) | |
784 | writeb(NodeName[i], | |
785 | &host->cfgtable->ServerName[i]); | |
786 | ||
787 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
788 | ||
789 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
790 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
791 | & CFGTBL_ChangeReq)) | |
792 | break; | |
793 | /* delay and try again */ | |
794 | udelay(1000); | |
795 | } | |
796 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
797 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
798 | return -EAGAIN; | |
799 | return 0; | |
800 | } | |
1da177e4 LT |
801 | |
802 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
803 | { |
804 | Heartbeat_type heartbeat; | |
805 | ||
806 | if (!arg) | |
807 | return -EINVAL; | |
808 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
809 | if (copy_to_user | |
810 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
811 | return -EFAULT; | |
812 | return 0; | |
813 | } | |
1da177e4 | 814 | case CCISS_GETBUSTYPES: |
7c832835 BH |
815 | { |
816 | BusTypes_type BusTypes; | |
817 | ||
818 | if (!arg) | |
819 | return -EINVAL; | |
820 | BusTypes = readl(&host->cfgtable->BusTypes); | |
821 | if (copy_to_user | |
822 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
823 | return -EFAULT; | |
824 | return 0; | |
825 | } | |
1da177e4 | 826 | case CCISS_GETFIRMVER: |
7c832835 BH |
827 | { |
828 | FirmwareVer_type firmware; | |
1da177e4 | 829 | |
7c832835 BH |
830 | if (!arg) |
831 | return -EINVAL; | |
832 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 833 | |
7c832835 BH |
834 | if (copy_to_user |
835 | (argp, firmware, sizeof(FirmwareVer_type))) | |
836 | return -EFAULT; | |
837 | return 0; | |
838 | } | |
839 | case CCISS_GETDRIVVER: | |
840 | { | |
841 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 842 | |
7c832835 BH |
843 | if (!arg) |
844 | return -EINVAL; | |
1da177e4 | 845 | |
7c832835 BH |
846 | if (copy_to_user |
847 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
848 | return -EFAULT; | |
849 | return 0; | |
850 | } | |
1da177e4 LT |
851 | |
852 | case CCISS_REVALIDVOLS: | |
853 | if (bdev != bdev->bd_contains || drv != host->drv) | |
854 | return -ENXIO; | |
7c832835 BH |
855 | return revalidate_allvol(host); |
856 | ||
857 | case CCISS_GETLUNINFO:{ | |
858 | LogvolInfo_struct luninfo; | |
859 | ||
860 | luninfo.LunID = drv->LunID; | |
861 | luninfo.num_opens = drv->usage_count; | |
862 | luninfo.num_parts = 0; | |
863 | if (copy_to_user(argp, &luninfo, | |
864 | sizeof(LogvolInfo_struct))) | |
865 | return -EFAULT; | |
866 | return 0; | |
867 | } | |
1da177e4 | 868 | case CCISS_DEREGDISK: |
ddd47442 | 869 | return rebuild_lun_table(host, disk); |
1da177e4 LT |
870 | |
871 | case CCISS_REGNEWD: | |
ddd47442 | 872 | return rebuild_lun_table(host, NULL); |
1da177e4 LT |
873 | |
874 | case CCISS_PASSTHRU: | |
1da177e4 | 875 | { |
7c832835 BH |
876 | IOCTL_Command_struct iocommand; |
877 | CommandList_struct *c; | |
878 | char *buff = NULL; | |
879 | u64bit temp64; | |
880 | unsigned long flags; | |
6e9a4738 | 881 | DECLARE_COMPLETION_ONSTACK(wait); |
1da177e4 | 882 | |
7c832835 BH |
883 | if (!arg) |
884 | return -EINVAL; | |
1da177e4 | 885 | |
7c832835 BH |
886 | if (!capable(CAP_SYS_RAWIO)) |
887 | return -EPERM; | |
1da177e4 | 888 | |
7c832835 BH |
889 | if (copy_from_user |
890 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
891 | return -EFAULT; | |
892 | if ((iocommand.buf_size < 1) && | |
893 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
894 | return -EINVAL; | |
895 | } | |
896 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
897 | /* Check kmalloc limits */ | |
898 | if (iocommand.buf_size > 128000) | |
899 | return -EINVAL; | |
900 | #endif | |
901 | if (iocommand.buf_size > 0) { | |
902 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
903 | if (buff == NULL) | |
904 | return -EFAULT; | |
905 | } | |
906 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
907 | /* Copy the data into the buffer we created */ | |
908 | if (copy_from_user | |
909 | (buff, iocommand.buf, iocommand.buf_size)) { | |
910 | kfree(buff); | |
911 | return -EFAULT; | |
912 | } | |
913 | } else { | |
914 | memset(buff, 0, iocommand.buf_size); | |
915 | } | |
916 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
917 | kfree(buff); | |
918 | return -ENOMEM; | |
919 | } | |
920 | // Fill in the command type | |
921 | c->cmd_type = CMD_IOCTL_PEND; | |
922 | // Fill in Command Header | |
923 | c->Header.ReplyQueue = 0; // unused in simple mode | |
924 | if (iocommand.buf_size > 0) // buffer to fill | |
925 | { | |
926 | c->Header.SGList = 1; | |
927 | c->Header.SGTotal = 1; | |
928 | } else // no buffers to fill | |
929 | { | |
930 | c->Header.SGList = 0; | |
931 | c->Header.SGTotal = 0; | |
932 | } | |
933 | c->Header.LUN = iocommand.LUN_info; | |
934 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag | |
1da177e4 | 935 | |
7c832835 BH |
936 | // Fill in Request block |
937 | c->Request = iocommand.Request; | |
1da177e4 | 938 | |
7c832835 BH |
939 | // Fill in the scatter gather information |
940 | if (iocommand.buf_size > 0) { | |
941 | temp64.val = pci_map_single(host->pdev, buff, | |
942 | iocommand.buf_size, | |
943 | PCI_DMA_BIDIRECTIONAL); | |
944 | c->SG[0].Addr.lower = temp64.val32.lower; | |
945 | c->SG[0].Addr.upper = temp64.val32.upper; | |
946 | c->SG[0].Len = iocommand.buf_size; | |
947 | c->SG[0].Ext = 0; // we are not chaining | |
948 | } | |
949 | c->waiting = &wait; | |
950 | ||
951 | /* Put the request on the tail of the request queue */ | |
952 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
953 | addQ(&host->reqQ, c); | |
954 | host->Qdepth++; | |
955 | start_io(host); | |
956 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
957 | ||
958 | wait_for_completion(&wait); | |
959 | ||
960 | /* unlock the buffers from DMA */ | |
961 | temp64.val32.lower = c->SG[0].Addr.lower; | |
962 | temp64.val32.upper = c->SG[0].Addr.upper; | |
963 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
964 | iocommand.buf_size, | |
965 | PCI_DMA_BIDIRECTIONAL); | |
966 | ||
967 | /* Copy the error information out */ | |
968 | iocommand.error_info = *(c->err_info); | |
969 | if (copy_to_user | |
970 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
971 | kfree(buff); | |
1da177e4 LT |
972 | cmd_free(host, c, 0); |
973 | return -EFAULT; | |
974 | } | |
7c832835 BH |
975 | |
976 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
977 | /* Copy the data out of the buffer we created */ | |
978 | if (copy_to_user | |
979 | (iocommand.buf, buff, iocommand.buf_size)) { | |
980 | kfree(buff); | |
981 | cmd_free(host, c, 0); | |
982 | return -EFAULT; | |
983 | } | |
984 | } | |
985 | kfree(buff); | |
986 | cmd_free(host, c, 0); | |
987 | return 0; | |
1da177e4 | 988 | } |
7c832835 BH |
989 | case CCISS_BIG_PASSTHRU:{ |
990 | BIG_IOCTL_Command_struct *ioc; | |
991 | CommandList_struct *c; | |
992 | unsigned char **buff = NULL; | |
993 | int *buff_size = NULL; | |
994 | u64bit temp64; | |
995 | unsigned long flags; | |
996 | BYTE sg_used = 0; | |
997 | int status = 0; | |
998 | int i; | |
6e9a4738 | 999 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1000 | __u32 left; |
1001 | __u32 sz; | |
1002 | BYTE __user *data_ptr; | |
1003 | ||
1004 | if (!arg) | |
1005 | return -EINVAL; | |
1006 | if (!capable(CAP_SYS_RAWIO)) | |
1007 | return -EPERM; | |
1008 | ioc = (BIG_IOCTL_Command_struct *) | |
1009 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1010 | if (!ioc) { | |
1011 | status = -ENOMEM; | |
1012 | goto cleanup1; | |
1013 | } | |
1014 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1015 | status = -EFAULT; | |
1016 | goto cleanup1; | |
1017 | } | |
1018 | if ((ioc->buf_size < 1) && | |
1019 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1020 | status = -EINVAL; |
1021 | goto cleanup1; | |
7c832835 BH |
1022 | } |
1023 | /* Check kmalloc limits using all SGs */ | |
1024 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1025 | status = -EINVAL; | |
1026 | goto cleanup1; | |
1027 | } | |
1028 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1029 | status = -EINVAL; | |
1030 | goto cleanup1; | |
1031 | } | |
1032 | buff = | |
1033 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1034 | if (!buff) { | |
1da177e4 LT |
1035 | status = -ENOMEM; |
1036 | goto cleanup1; | |
1037 | } | |
7c832835 BH |
1038 | buff_size = (int *)kmalloc(MAXSGENTRIES * sizeof(int), |
1039 | GFP_KERNEL); | |
1040 | if (!buff_size) { | |
1041 | status = -ENOMEM; | |
1042 | goto cleanup1; | |
1043 | } | |
1044 | left = ioc->buf_size; | |
1045 | data_ptr = ioc->buf; | |
1046 | while (left) { | |
1047 | sz = (left > | |
1048 | ioc->malloc_size) ? ioc-> | |
1049 | malloc_size : left; | |
1050 | buff_size[sg_used] = sz; | |
1051 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1052 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1053 | status = -ENOMEM; |
15534d38 JA |
1054 | goto cleanup1; |
1055 | } | |
7c832835 BH |
1056 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1057 | if (copy_from_user | |
1058 | (buff[sg_used], data_ptr, sz)) { | |
1059 | status = -ENOMEM; | |
1060 | goto cleanup1; | |
1061 | } | |
1062 | } else { | |
1063 | memset(buff[sg_used], 0, sz); | |
1064 | } | |
1065 | left -= sz; | |
1066 | data_ptr += sz; | |
1067 | sg_used++; | |
1068 | } | |
1069 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1070 | status = -ENOMEM; | |
1071 | goto cleanup1; | |
1072 | } | |
1073 | c->cmd_type = CMD_IOCTL_PEND; | |
1074 | c->Header.ReplyQueue = 0; | |
1075 | ||
1076 | if (ioc->buf_size > 0) { | |
1077 | c->Header.SGList = sg_used; | |
1078 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1079 | } else { |
7c832835 BH |
1080 | c->Header.SGList = 0; |
1081 | c->Header.SGTotal = 0; | |
1da177e4 | 1082 | } |
7c832835 BH |
1083 | c->Header.LUN = ioc->LUN_info; |
1084 | c->Header.Tag.lower = c->busaddr; | |
1085 | ||
1086 | c->Request = ioc->Request; | |
1087 | if (ioc->buf_size > 0) { | |
1088 | int i; | |
1089 | for (i = 0; i < sg_used; i++) { | |
1090 | temp64.val = | |
1091 | pci_map_single(host->pdev, buff[i], | |
1092 | buff_size[i], | |
1093 | PCI_DMA_BIDIRECTIONAL); | |
1094 | c->SG[i].Addr.lower = | |
1095 | temp64.val32.lower; | |
1096 | c->SG[i].Addr.upper = | |
1097 | temp64.val32.upper; | |
1098 | c->SG[i].Len = buff_size[i]; | |
1099 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1100 | } | |
1101 | } | |
1102 | c->waiting = &wait; | |
1103 | /* Put the request on the tail of the request queue */ | |
1104 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1105 | addQ(&host->reqQ, c); | |
1106 | host->Qdepth++; | |
1107 | start_io(host); | |
1108 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1109 | wait_for_completion(&wait); | |
1110 | /* unlock the buffers from DMA */ | |
1111 | for (i = 0; i < sg_used; i++) { | |
1112 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1113 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1114 | pci_unmap_single(host->pdev, | |
1115 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1116 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1117 | } |
7c832835 BH |
1118 | /* Copy the error information out */ |
1119 | ioc->error_info = *(c->err_info); | |
1120 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1121 | cmd_free(host, c, 0); | |
1122 | status = -EFAULT; | |
1123 | goto cleanup1; | |
1124 | } | |
1125 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1126 | /* Copy the data out of the buffer we created */ | |
1127 | BYTE __user *ptr = ioc->buf; | |
1128 | for (i = 0; i < sg_used; i++) { | |
1129 | if (copy_to_user | |
1130 | (ptr, buff[i], buff_size[i])) { | |
1131 | cmd_free(host, c, 0); | |
1132 | status = -EFAULT; | |
1133 | goto cleanup1; | |
1134 | } | |
1135 | ptr += buff_size[i]; | |
1da177e4 | 1136 | } |
1da177e4 | 1137 | } |
7c832835 BH |
1138 | cmd_free(host, c, 0); |
1139 | status = 0; | |
1140 | cleanup1: | |
1141 | if (buff) { | |
1142 | for (i = 0; i < sg_used; i++) | |
1143 | kfree(buff[i]); | |
1144 | kfree(buff); | |
1145 | } | |
1146 | kfree(buff_size); | |
1147 | kfree(ioc); | |
1148 | return status; | |
1da177e4 | 1149 | } |
1da177e4 LT |
1150 | default: |
1151 | return -ENOTTY; | |
1152 | } | |
1da177e4 LT |
1153 | } |
1154 | ||
1155 | /* | |
1156 | * revalidate_allvol is for online array config utilities. After a | |
1157 | * utility reconfigures the drives in the array, it can use this function | |
1158 | * (through an ioctl) to make the driver zap any previous disk structs for | |
1159 | * that controller and get new ones. | |
1160 | * | |
1161 | * Right now I'm using the getgeometry() function to do this, but this | |
1162 | * function should probably be finer grained and allow you to revalidate one | |
d14c4ab5 | 1163 | * particular logical volume (instead of all of them on a particular |
1da177e4 LT |
1164 | * controller). |
1165 | */ | |
1166 | static int revalidate_allvol(ctlr_info_t *host) | |
1167 | { | |
1168 | int ctlr = host->ctlr, i; | |
1169 | unsigned long flags; | |
1170 | ||
7c832835 BH |
1171 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
1172 | if (host->usage_count > 1) { | |
1173 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1174 | printk(KERN_WARNING "cciss: Device busy for volume" | |
1175 | " revalidation (usage=%d)\n", host->usage_count); | |
1176 | return -EBUSY; | |
1177 | } | |
1178 | host->usage_count++; | |
1da177e4 LT |
1179 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
1180 | ||
7c832835 | 1181 | for (i = 0; i < NWD; i++) { |
1da177e4 | 1182 | struct gendisk *disk = host->gendisk[i]; |
6f5a0f7c | 1183 | if (disk) { |
1184 | request_queue_t *q = disk->queue; | |
1185 | ||
1186 | if (disk->flags & GENHD_FL_UP) | |
1187 | del_gendisk(disk); | |
1188 | if (q) | |
1189 | blk_cleanup_queue(q); | |
6f5a0f7c | 1190 | } |
1da177e4 LT |
1191 | } |
1192 | ||
7c832835 BH |
1193 | /* |
1194 | * Set the partition and block size structures for all volumes | |
1195 | * on this controller to zero. We will reread all of this data | |
1196 | */ | |
1197 | memset(host->drv, 0, sizeof(drive_info_struct) | |
1198 | * CISS_MAX_LUN); | |
1199 | /* | |
1200 | * Tell the array controller not to give us any interrupts while | |
1201 | * we check the new geometry. Then turn interrupts back on when | |
1202 | * we're done. | |
1203 | */ | |
1204 | host->access.set_intr_mask(host, CCISS_INTR_OFF); | |
1205 | cciss_getgeometry(ctlr); | |
1206 | host->access.set_intr_mask(host, CCISS_INTR_ON); | |
1207 | ||
1208 | /* Loop through each real device */ | |
1da177e4 LT |
1209 | for (i = 0; i < NWD; i++) { |
1210 | struct gendisk *disk = host->gendisk[i]; | |
1211 | drive_info_struct *drv = &(host->drv[i]); | |
1212 | /* we must register the controller even if no disks exist */ | |
1213 | /* this is for the online array utilities */ | |
1214 | if (!drv->heads && i) | |
1215 | continue; | |
ad2b9312 | 1216 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
1da177e4 LT |
1217 | set_capacity(disk, drv->nr_blocks); |
1218 | add_disk(disk); | |
1219 | } | |
7c832835 BH |
1220 | host->usage_count--; |
1221 | return 0; | |
1da177e4 LT |
1222 | } |
1223 | ||
ca1e0484 MM |
1224 | static inline void complete_buffers(struct bio *bio, int status) |
1225 | { | |
1226 | while (bio) { | |
1227 | struct bio *xbh = bio->bi_next; | |
1228 | int nr_sectors = bio_sectors(bio); | |
1229 | ||
1230 | bio->bi_next = NULL; | |
ca1e0484 MM |
1231 | bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO); |
1232 | bio = xbh; | |
1233 | } | |
ca1e0484 MM |
1234 | } |
1235 | ||
7b30f092 JA |
1236 | static void cciss_check_queues(ctlr_info_t *h) |
1237 | { | |
1238 | int start_queue = h->next_to_run; | |
1239 | int i; | |
1240 | ||
1241 | /* check to see if we have maxed out the number of commands that can | |
1242 | * be placed on the queue. If so then exit. We do this check here | |
1243 | * in case the interrupt we serviced was from an ioctl and did not | |
1244 | * free any new commands. | |
1245 | */ | |
1246 | if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS) | |
1247 | return; | |
1248 | ||
1249 | /* We have room on the queue for more commands. Now we need to queue | |
1250 | * them up. We will also keep track of the next queue to run so | |
1251 | * that every queue gets a chance to be started first. | |
1252 | */ | |
1253 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1254 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1255 | /* make sure the disk has been added and the drive is real | |
1256 | * because this can be called from the middle of init_one. | |
1257 | */ | |
1258 | if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads)) | |
1259 | continue; | |
1260 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1261 | ||
1262 | /* check to see if we have maxed out the number of commands | |
1263 | * that can be placed on the queue. | |
1264 | */ | |
1265 | if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS) { | |
1266 | if (curr_queue == start_queue) { | |
1267 | h->next_to_run = | |
1268 | (start_queue + 1) % (h->highest_lun + 1); | |
1269 | break; | |
1270 | } else { | |
1271 | h->next_to_run = curr_queue; | |
1272 | break; | |
1273 | } | |
1274 | } else { | |
1275 | curr_queue = (curr_queue + 1) % (h->highest_lun + 1); | |
1276 | } | |
1277 | } | |
1278 | } | |
1279 | ||
ca1e0484 MM |
1280 | static void cciss_softirq_done(struct request *rq) |
1281 | { | |
1282 | CommandList_struct *cmd = rq->completion_data; | |
1283 | ctlr_info_t *h = hba[cmd->ctlr]; | |
1284 | unsigned long flags; | |
1285 | u64bit temp64; | |
1286 | int i, ddir; | |
1287 | ||
1288 | if (cmd->Request.Type.Direction == XFER_READ) | |
1289 | ddir = PCI_DMA_FROMDEVICE; | |
1290 | else | |
1291 | ddir = PCI_DMA_TODEVICE; | |
1292 | ||
1293 | /* command did not need to be retried */ | |
1294 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1295 | for (i = 0; i < cmd->Header.SGList; i++) { |
ca1e0484 MM |
1296 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
1297 | temp64.val32.upper = cmd->SG[i].Addr.upper; | |
1298 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); | |
1299 | } | |
1300 | ||
1301 | complete_buffers(rq->bio, rq->errors); | |
1302 | ||
1303 | #ifdef CCISS_DEBUG | |
1304 | printk("Done with %p\n", rq); | |
7c832835 | 1305 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1306 | |
8bd0b97e | 1307 | add_disk_randomness(rq->rq_disk); |
ca1e0484 MM |
1308 | spin_lock_irqsave(&h->lock, flags); |
1309 | end_that_request_last(rq, rq->errors); | |
7c832835 | 1310 | cmd_free(h, cmd, 1); |
7b30f092 | 1311 | cciss_check_queues(h); |
ca1e0484 MM |
1312 | spin_unlock_irqrestore(&h->lock, flags); |
1313 | } | |
1314 | ||
ddd47442 MM |
1315 | /* This function will check the usage_count of the drive to be updated/added. |
1316 | * If the usage_count is zero then the drive information will be updated and | |
1317 | * the disk will be re-registered with the kernel. If not then it will be | |
1318 | * left alone for the next reboot. The exception to this is disk 0 which | |
1319 | * will always be left registered with the kernel since it is also the | |
1320 | * controller node. Any changes to disk 0 will show up on the next | |
1321 | * reboot. | |
7c832835 | 1322 | */ |
ddd47442 | 1323 | static void cciss_update_drive_info(int ctlr, int drv_index) |
7c832835 | 1324 | { |
ddd47442 MM |
1325 | ctlr_info_t *h = hba[ctlr]; |
1326 | struct gendisk *disk; | |
ddd47442 MM |
1327 | InquiryData_struct *inq_buff = NULL; |
1328 | unsigned int block_size; | |
00988a35 | 1329 | sector_t total_size; |
ddd47442 MM |
1330 | unsigned long flags = 0; |
1331 | int ret = 0; | |
1332 | ||
7c832835 BH |
1333 | /* if the disk already exists then deregister it before proceeding */ |
1334 | if (h->drv[drv_index].raid_level != -1) { | |
ddd47442 MM |
1335 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
1336 | h->drv[drv_index].busy_configuring = 1; | |
1337 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1338 | ret = deregister_disk(h->gendisk[drv_index], | |
7c832835 | 1339 | &h->drv[drv_index], 0); |
ddd47442 MM |
1340 | h->drv[drv_index].busy_configuring = 0; |
1341 | } | |
1342 | ||
1343 | /* If the disk is in use return */ | |
1344 | if (ret) | |
1345 | return; | |
1346 | ||
d14c4ab5 | 1347 | /* Get information about the disk and modify the driver structure */ |
7c832835 | 1348 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
ddd47442 MM |
1349 | if (inq_buff == NULL) |
1350 | goto mem_msg; | |
1351 | ||
00988a35 | 1352 | cciss_read_capacity(ctlr, drv_index, 1, |
7c832835 | 1353 | &total_size, &block_size); |
00988a35 MMOD |
1354 | |
1355 | /* total size = last LBA + 1 */ | |
1356 | /* FFFFFFFF + 1 = 0, cannot have a logical volume of size 0 */ | |
1357 | /* so we assume this volume this must be >2TB in size */ | |
1358 | if (total_size == (__u32) 0) { | |
1359 | cciss_read_capacity_16(ctlr, drv_index, 1, | |
1360 | &total_size, &block_size); | |
1361 | h->cciss_read = CCISS_READ_16; | |
1362 | h->cciss_write = CCISS_WRITE_16; | |
1363 | } else { | |
1364 | h->cciss_read = CCISS_READ_10; | |
1365 | h->cciss_write = CCISS_WRITE_10; | |
1366 | } | |
ddd47442 | 1367 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, |
7c832835 | 1368 | inq_buff, &h->drv[drv_index]); |
ddd47442 MM |
1369 | |
1370 | ++h->num_luns; | |
1371 | disk = h->gendisk[drv_index]; | |
1372 | set_capacity(disk, h->drv[drv_index].nr_blocks); | |
1373 | ||
ddd47442 | 1374 | /* if it's the controller it's already added */ |
7c832835 | 1375 | if (drv_index) { |
ddd47442 MM |
1376 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
1377 | ||
1378 | /* Set up queue information */ | |
1379 | disk->queue->backing_dev_info.ra_pages = READ_AHEAD; | |
1380 | blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask); | |
1381 | ||
1382 | /* This is a hardware imposed limit. */ | |
1383 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); | |
1384 | ||
1385 | /* This is a limit in the driver and could be eliminated. */ | |
1386 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); | |
1387 | ||
1388 | blk_queue_max_sectors(disk->queue, 512); | |
1389 | ||
ca1e0484 MM |
1390 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
1391 | ||
ddd47442 MM |
1392 | disk->queue->queuedata = hba[ctlr]; |
1393 | ||
1394 | blk_queue_hardsect_size(disk->queue, | |
7c832835 | 1395 | hba[ctlr]->drv[drv_index].block_size); |
ddd47442 MM |
1396 | |
1397 | h->drv[drv_index].queue = disk->queue; | |
1398 | add_disk(disk); | |
1399 | } | |
1400 | ||
7c832835 | 1401 | freeret: |
ddd47442 MM |
1402 | kfree(inq_buff); |
1403 | return; | |
7c832835 | 1404 | mem_msg: |
ddd47442 MM |
1405 | printk(KERN_ERR "cciss: out of memory\n"); |
1406 | goto freeret; | |
1407 | } | |
1408 | ||
1409 | /* This function will find the first index of the controllers drive array | |
1410 | * that has a -1 for the raid_level and will return that index. This is | |
1411 | * where new drives will be added. If the index to be returned is greater | |
1412 | * than the highest_lun index for the controller then highest_lun is set | |
1413 | * to this new index. If there are no available indexes then -1 is returned. | |
7c832835 | 1414 | */ |
ddd47442 MM |
1415 | static int cciss_find_free_drive_index(int ctlr) |
1416 | { | |
1417 | int i; | |
1418 | ||
7c832835 BH |
1419 | for (i = 0; i < CISS_MAX_LUN; i++) { |
1420 | if (hba[ctlr]->drv[i].raid_level == -1) { | |
ddd47442 MM |
1421 | if (i > hba[ctlr]->highest_lun) |
1422 | hba[ctlr]->highest_lun = i; | |
1423 | return i; | |
1424 | } | |
1425 | } | |
1426 | return -1; | |
1427 | } | |
1428 | ||
1429 | /* This function will add and remove logical drives from the Logical | |
d14c4ab5 | 1430 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
1431 | * so that mount points are preserved until the next reboot. This allows |
1432 | * for the removal of logical drives in the middle of the drive array | |
1433 | * without a re-ordering of those drives. | |
1434 | * INPUT | |
1435 | * h = The controller to perform the operations on | |
1436 | * del_disk = The disk to remove if specified. If the value given | |
1437 | * is NULL then no disk is removed. | |
7c832835 | 1438 | */ |
ddd47442 | 1439 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk) |
1da177e4 | 1440 | { |
ddd47442 MM |
1441 | int ctlr = h->ctlr; |
1442 | int num_luns; | |
1443 | ReportLunData_struct *ld_buff = NULL; | |
1444 | drive_info_struct *drv = NULL; | |
1445 | int return_code; | |
1446 | int listlength = 0; | |
1447 | int i; | |
1448 | int drv_found; | |
1449 | int drv_index = 0; | |
1450 | __u32 lunid = 0; | |
1da177e4 | 1451 | unsigned long flags; |
ddd47442 MM |
1452 | |
1453 | /* Set busy_configuring flag for this operation */ | |
1454 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 1455 | if (h->num_luns >= CISS_MAX_LUN) { |
ddd47442 MM |
1456 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
1457 | return -EINVAL; | |
1458 | } | |
1459 | ||
7c832835 | 1460 | if (h->busy_configuring) { |
ddd47442 MM |
1461 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
1462 | return -EBUSY; | |
1463 | } | |
1464 | h->busy_configuring = 1; | |
1465 | ||
1466 | /* if del_disk is NULL then we are being called to add a new disk | |
1467 | * and update the logical drive table. If it is not NULL then | |
1468 | * we will check if the disk is in use or not. | |
1469 | */ | |
7c832835 | 1470 | if (del_disk != NULL) { |
ddd47442 MM |
1471 | drv = get_drv(del_disk); |
1472 | drv->busy_configuring = 1; | |
1473 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1474 | return_code = deregister_disk(del_disk, drv, 1); | |
1475 | drv->busy_configuring = 0; | |
1476 | h->busy_configuring = 0; | |
1477 | return return_code; | |
1478 | } else { | |
1479 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1480 | if (!capable(CAP_SYS_RAWIO)) | |
1481 | return -EPERM; | |
1482 | ||
1483 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); | |
1484 | if (ld_buff == NULL) | |
1485 | goto mem_msg; | |
1486 | ||
1487 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
7c832835 BH |
1488 | sizeof(ReportLunData_struct), 0, |
1489 | 0, 0, TYPE_CMD); | |
1490 | ||
1491 | if (return_code == IO_OK) { | |
1492 | listlength |= | |
1493 | (0xff & (unsigned int)(ld_buff->LUNListLength[0])) | |
1494 | << 24; | |
1495 | listlength |= | |
1496 | (0xff & (unsigned int)(ld_buff->LUNListLength[1])) | |
1497 | << 16; | |
1498 | listlength |= | |
1499 | (0xff & (unsigned int)(ld_buff->LUNListLength[2])) | |
1500 | << 8; | |
1501 | listlength |= | |
1502 | 0xff & (unsigned int)(ld_buff->LUNListLength[3]); | |
1503 | } else { /* reading number of logical volumes failed */ | |
ddd47442 | 1504 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 1505 | " command failed\n"); |
ddd47442 MM |
1506 | listlength = 0; |
1507 | goto freeret; | |
1508 | } | |
1509 | ||
1510 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
7c832835 | 1511 | if (num_luns > CISS_MAX_LUN) { |
ddd47442 MM |
1512 | num_luns = CISS_MAX_LUN; |
1513 | printk(KERN_WARNING "cciss: more luns configured" | |
7c832835 BH |
1514 | " on controller than can be handled by" |
1515 | " this driver.\n"); | |
ddd47442 MM |
1516 | } |
1517 | ||
1518 | /* Compare controller drive array to drivers drive array. | |
7c832835 BH |
1519 | * Check for updates in the drive information and any new drives |
1520 | * on the controller. | |
1521 | */ | |
1522 | for (i = 0; i < num_luns; i++) { | |
ddd47442 MM |
1523 | int j; |
1524 | ||
1525 | drv_found = 0; | |
1526 | ||
7c832835 BH |
1527 | lunid = (0xff & |
1528 | (unsigned int)(ld_buff->LUN[i][3])) << 24; | |
1529 | lunid |= (0xff & | |
1530 | (unsigned int)(ld_buff->LUN[i][2])) << 16; | |
1531 | lunid |= (0xff & | |
1532 | (unsigned int)(ld_buff->LUN[i][1])) << 8; | |
1533 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
ddd47442 MM |
1534 | |
1535 | /* Find if the LUN is already in the drive array | |
1536 | * of the controller. If so then update its info | |
1537 | * if not is use. If it does not exist then find | |
1538 | * the first free index and add it. | |
7c832835 BH |
1539 | */ |
1540 | for (j = 0; j <= h->highest_lun; j++) { | |
1541 | if (h->drv[j].LunID == lunid) { | |
ddd47442 MM |
1542 | drv_index = j; |
1543 | drv_found = 1; | |
1544 | } | |
1545 | } | |
1546 | ||
1547 | /* check if the drive was found already in the array */ | |
7c832835 | 1548 | if (!drv_found) { |
ddd47442 MM |
1549 | drv_index = cciss_find_free_drive_index(ctlr); |
1550 | if (drv_index == -1) | |
1551 | goto freeret; | |
1552 | ||
1553 | } | |
1554 | h->drv[drv_index].LunID = lunid; | |
1555 | cciss_update_drive_info(ctlr, drv_index); | |
7c832835 BH |
1556 | } /* end for */ |
1557 | } /* end else */ | |
ddd47442 | 1558 | |
7c832835 | 1559 | freeret: |
ddd47442 MM |
1560 | kfree(ld_buff); |
1561 | h->busy_configuring = 0; | |
1562 | /* We return -1 here to tell the ACU that we have registered/updated | |
1563 | * all of the drives that we can and to keep it from calling us | |
1564 | * additional times. | |
7c832835 | 1565 | */ |
ddd47442 | 1566 | return -1; |
7c832835 | 1567 | mem_msg: |
ddd47442 MM |
1568 | printk(KERN_ERR "cciss: out of memory\n"); |
1569 | goto freeret; | |
1570 | } | |
1571 | ||
1572 | /* This function will deregister the disk and it's queue from the | |
1573 | * kernel. It must be called with the controller lock held and the | |
1574 | * drv structures busy_configuring flag set. It's parameters are: | |
1575 | * | |
1576 | * disk = This is the disk to be deregistered | |
1577 | * drv = This is the drive_info_struct associated with the disk to be | |
1578 | * deregistered. It contains information about the disk used | |
1579 | * by the driver. | |
1580 | * clear_all = This flag determines whether or not the disk information | |
1581 | * is going to be completely cleared out and the highest_lun | |
1582 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 1583 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
1584 | * the highest_lun should be left unchanged and the LunID |
1585 | * should not be cleared. | |
1586 | */ | |
1587 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, | |
1588 | int clear_all) | |
1589 | { | |
1da177e4 | 1590 | ctlr_info_t *h = get_host(disk); |
1da177e4 LT |
1591 | |
1592 | if (!capable(CAP_SYS_RAWIO)) | |
1593 | return -EPERM; | |
1594 | ||
1da177e4 | 1595 | /* make sure logical volume is NOT is use */ |
7c832835 BH |
1596 | if (clear_all || (h->gendisk[0] == disk)) { |
1597 | if (drv->usage_count > 1) | |
1598 | return -EBUSY; | |
1599 | } else if (drv->usage_count > 0) | |
1600 | return -EBUSY; | |
1da177e4 | 1601 | |
ddd47442 MM |
1602 | /* invalidate the devices and deregister the disk. If it is disk |
1603 | * zero do not deregister it but just zero out it's values. This | |
1604 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
1605 | */ |
1606 | if (h->gendisk[0] != disk) { | |
6f5a0f7c | 1607 | if (disk) { |
1608 | request_queue_t *q = disk->queue; | |
1609 | if (disk->flags & GENHD_FL_UP) | |
1610 | del_gendisk(disk); | |
2f6331fa | 1611 | if (q) { |
6f5a0f7c | 1612 | blk_cleanup_queue(q); |
2f6331fa MM |
1613 | drv->queue = NULL; |
1614 | } | |
ddd47442 MM |
1615 | } |
1616 | } | |
1617 | ||
1618 | --h->num_luns; | |
1619 | /* zero out the disk size info */ | |
1620 | drv->nr_blocks = 0; | |
1621 | drv->block_size = 0; | |
1622 | drv->heads = 0; | |
1623 | drv->sectors = 0; | |
1624 | drv->cylinders = 0; | |
1625 | drv->raid_level = -1; /* This can be used as a flag variable to | |
1626 | * indicate that this element of the drive | |
1627 | * array is free. | |
7c832835 BH |
1628 | */ |
1629 | ||
1630 | if (clear_all) { | |
1631 | /* check to see if it was the last disk */ | |
1632 | if (drv == h->drv + h->highest_lun) { | |
1633 | /* if so, find the new hightest lun */ | |
1634 | int i, newhighest = -1; | |
1635 | for (i = 0; i < h->highest_lun; i++) { | |
1636 | /* if the disk has size > 0, it is available */ | |
ddd47442 | 1637 | if (h->drv[i].heads) |
7c832835 BH |
1638 | newhighest = i; |
1639 | } | |
1640 | h->highest_lun = newhighest; | |
1da177e4 | 1641 | } |
ddd47442 | 1642 | |
7c832835 | 1643 | drv->LunID = 0; |
ddd47442 | 1644 | } |
e2019b58 | 1645 | return 0; |
1da177e4 | 1646 | } |
ddd47442 | 1647 | |
7c832835 BH |
1648 | 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, |
1649 | 1: address logical volume log_unit, | |
1650 | 2: periph device address is scsi3addr */ | |
1651 | unsigned int log_unit, __u8 page_code, | |
1652 | unsigned char *scsi3addr, int cmd_type) | |
1da177e4 | 1653 | { |
7c832835 | 1654 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
1655 | u64bit buff_dma_handle; |
1656 | int status = IO_OK; | |
1657 | ||
1658 | c->cmd_type = CMD_IOCTL_PEND; | |
1659 | c->Header.ReplyQueue = 0; | |
7c832835 | 1660 | if (buff != NULL) { |
1da177e4 | 1661 | c->Header.SGList = 1; |
7c832835 | 1662 | c->Header.SGTotal = 1; |
1da177e4 LT |
1663 | } else { |
1664 | c->Header.SGList = 0; | |
7c832835 | 1665 | c->Header.SGTotal = 0; |
1da177e4 LT |
1666 | } |
1667 | c->Header.Tag.lower = c->busaddr; | |
1668 | ||
1669 | c->Request.Type.Type = cmd_type; | |
1670 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
1671 | switch (cmd) { |
1672 | case CISS_INQUIRY: | |
1da177e4 | 1673 | /* If the logical unit number is 0 then, this is going |
7c832835 BH |
1674 | to controller so It's a physical command |
1675 | mode = 0 target = 0. So we have nothing to write. | |
1676 | otherwise, if use_unit_num == 1, | |
1677 | mode = 1(volume set addressing) target = LUNID | |
1678 | otherwise, if use_unit_num == 2, | |
1679 | mode = 0(periph dev addr) target = scsi3addr */ | |
1da177e4 | 1680 | if (use_unit_num == 1) { |
7c832835 BH |
1681 | c->Header.LUN.LogDev.VolId = |
1682 | h->drv[log_unit].LunID; | |
1683 | c->Header.LUN.LogDev.Mode = 1; | |
1da177e4 | 1684 | } else if (use_unit_num == 2) { |
7c832835 BH |
1685 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, |
1686 | 8); | |
1da177e4 LT |
1687 | c->Header.LUN.LogDev.Mode = 0; |
1688 | } | |
1689 | /* are we trying to read a vital product page */ | |
7c832835 | 1690 | if (page_code != 0) { |
1da177e4 LT |
1691 | c->Request.CDB[1] = 0x01; |
1692 | c->Request.CDB[2] = page_code; | |
1693 | } | |
1694 | c->Request.CDBLen = 6; | |
7c832835 | 1695 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
1696 | c->Request.Type.Direction = XFER_READ; |
1697 | c->Request.Timeout = 0; | |
7c832835 BH |
1698 | c->Request.CDB[0] = CISS_INQUIRY; |
1699 | c->Request.CDB[4] = size & 0xFF; | |
1700 | break; | |
1da177e4 LT |
1701 | case CISS_REPORT_LOG: |
1702 | case CISS_REPORT_PHYS: | |
7c832835 | 1703 | /* Talking to controller so It's a physical command |
1da177e4 | 1704 | mode = 00 target = 0. Nothing to write. |
7c832835 | 1705 | */ |
1da177e4 LT |
1706 | c->Request.CDBLen = 12; |
1707 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1708 | c->Request.Type.Direction = XFER_READ; | |
1709 | c->Request.Timeout = 0; | |
1710 | c->Request.CDB[0] = cmd; | |
7c832835 | 1711 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
1da177e4 LT |
1712 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
1713 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
1714 | c->Request.CDB[9] = size & 0xFF; | |
1715 | break; | |
1716 | ||
1717 | case CCISS_READ_CAPACITY: | |
1718 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1719 | c->Header.LUN.LogDev.Mode = 1; | |
1720 | c->Request.CDBLen = 10; | |
1721 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1722 | c->Request.Type.Direction = XFER_READ; | |
1723 | c->Request.Timeout = 0; | |
1724 | c->Request.CDB[0] = cmd; | |
7c832835 | 1725 | break; |
00988a35 MMOD |
1726 | case CCISS_READ_CAPACITY_16: |
1727 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1728 | c->Header.LUN.LogDev.Mode = 1; | |
1729 | c->Request.CDBLen = 16; | |
1730 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1731 | c->Request.Type.Direction = XFER_READ; | |
1732 | c->Request.Timeout = 0; | |
1733 | c->Request.CDB[0] = cmd; | |
1734 | c->Request.CDB[1] = 0x10; | |
1735 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
1736 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
1737 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
1738 | c->Request.CDB[13] = size & 0xFF; | |
1739 | c->Request.Timeout = 0; | |
1740 | c->Request.CDB[0] = cmd; | |
1741 | break; | |
1da177e4 LT |
1742 | case CCISS_CACHE_FLUSH: |
1743 | c->Request.CDBLen = 12; | |
1744 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1745 | c->Request.Type.Direction = XFER_WRITE; | |
1746 | c->Request.Timeout = 0; | |
1747 | c->Request.CDB[0] = BMIC_WRITE; | |
1748 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 1749 | break; |
1da177e4 LT |
1750 | default: |
1751 | printk(KERN_WARNING | |
7c832835 | 1752 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 1753 | return IO_ERROR; |
1da177e4 LT |
1754 | } |
1755 | } else if (cmd_type == TYPE_MSG) { | |
1756 | switch (cmd) { | |
7c832835 | 1757 | case 0: /* ABORT message */ |
3da8b713 | 1758 | c->Request.CDBLen = 12; |
1759 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1760 | c->Request.Type.Direction = XFER_WRITE; | |
1761 | c->Request.Timeout = 0; | |
7c832835 BH |
1762 | c->Request.CDB[0] = cmd; /* abort */ |
1763 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 1764 | /* buff contains the tag of the command to abort */ |
1765 | memcpy(&c->Request.CDB[4], buff, 8); | |
1766 | break; | |
7c832835 | 1767 | case 1: /* RESET message */ |
3da8b713 | 1768 | c->Request.CDBLen = 12; |
1769 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1770 | c->Request.Type.Direction = XFER_WRITE; | |
1771 | c->Request.Timeout = 0; | |
1772 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 BH |
1773 | c->Request.CDB[0] = cmd; /* reset */ |
1774 | c->Request.CDB[1] = 0x04; /* reset a LUN */ | |
00988a35 | 1775 | break; |
1da177e4 LT |
1776 | case 3: /* No-Op message */ |
1777 | c->Request.CDBLen = 1; | |
1778 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1779 | c->Request.Type.Direction = XFER_WRITE; | |
1780 | c->Request.Timeout = 0; | |
1781 | c->Request.CDB[0] = cmd; | |
1782 | break; | |
1783 | default: | |
1784 | printk(KERN_WARNING | |
7c832835 | 1785 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
1786 | return IO_ERROR; |
1787 | } | |
1788 | } else { | |
1789 | printk(KERN_WARNING | |
7c832835 | 1790 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
1791 | return IO_ERROR; |
1792 | } | |
1793 | /* Fill in the scatter gather information */ | |
1794 | if (size > 0) { | |
1795 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
1796 | buff, size, |
1797 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
1798 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
1799 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
1800 | c->SG[0].Len = size; | |
7c832835 | 1801 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
1802 | } |
1803 | return status; | |
1804 | } | |
7c832835 BH |
1805 | |
1806 | static int sendcmd_withirq(__u8 cmd, | |
1807 | int ctlr, | |
1808 | void *buff, | |
1809 | size_t size, | |
1810 | unsigned int use_unit_num, | |
1811 | unsigned int log_unit, __u8 page_code, int cmd_type) | |
1da177e4 LT |
1812 | { |
1813 | ctlr_info_t *h = hba[ctlr]; | |
1814 | CommandList_struct *c; | |
7c832835 | 1815 | u64bit buff_dma_handle; |
1da177e4 LT |
1816 | unsigned long flags; |
1817 | int return_status; | |
6e9a4738 | 1818 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1819 | |
1820 | if ((c = cmd_alloc(h, 0)) == NULL) | |
1da177e4 LT |
1821 | return -ENOMEM; |
1822 | return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 1823 | log_unit, page_code, NULL, cmd_type); |
1da177e4 LT |
1824 | if (return_status != IO_OK) { |
1825 | cmd_free(h, c, 0); | |
1826 | return return_status; | |
1827 | } | |
7c832835 | 1828 | resend_cmd2: |
1da177e4 | 1829 | c->waiting = &wait; |
7c832835 | 1830 | |
1da177e4 LT |
1831 | /* Put the request on the tail of the queue and send it */ |
1832 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1833 | addQ(&h->reqQ, c); | |
1834 | h->Qdepth++; | |
1835 | start_io(h); | |
1836 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 1837 | |
1da177e4 LT |
1838 | wait_for_completion(&wait); |
1839 | ||
7c832835 BH |
1840 | if (c->err_info->CommandStatus != 0) { /* an error has occurred */ |
1841 | switch (c->err_info->CommandStatus) { | |
1842 | case CMD_TARGET_STATUS: | |
1843 | printk(KERN_WARNING "cciss: cmd %p has " | |
1844 | " completed with errors\n", c); | |
1845 | if (c->err_info->ScsiStatus) { | |
1846 | printk(KERN_WARNING "cciss: cmd %p " | |
1847 | "has SCSI Status = %x\n", | |
1848 | c, c->err_info->ScsiStatus); | |
1849 | } | |
1da177e4 LT |
1850 | |
1851 | break; | |
7c832835 BH |
1852 | case CMD_DATA_UNDERRUN: |
1853 | case CMD_DATA_OVERRUN: | |
1da177e4 LT |
1854 | /* expected for inquire and report lun commands */ |
1855 | break; | |
7c832835 BH |
1856 | case CMD_INVALID: |
1857 | printk(KERN_WARNING "cciss: Cmd %p is " | |
1858 | "reported invalid\n", c); | |
1859 | return_status = IO_ERROR; | |
1da177e4 | 1860 | break; |
7c832835 BH |
1861 | case CMD_PROTOCOL_ERR: |
1862 | printk(KERN_WARNING "cciss: cmd %p has " | |
1863 | "protocol error \n", c); | |
1864 | return_status = IO_ERROR; | |
1da177e4 | 1865 | break; |
7c832835 BH |
1866 | case CMD_HARDWARE_ERR: |
1867 | printk(KERN_WARNING "cciss: cmd %p had " | |
1868 | " hardware error\n", c); | |
1869 | return_status = IO_ERROR; | |
1da177e4 | 1870 | break; |
7c832835 BH |
1871 | case CMD_CONNECTION_LOST: |
1872 | printk(KERN_WARNING "cciss: cmd %p had " | |
1873 | "connection lost\n", c); | |
1874 | return_status = IO_ERROR; | |
1da177e4 | 1875 | break; |
7c832835 BH |
1876 | case CMD_ABORTED: |
1877 | printk(KERN_WARNING "cciss: cmd %p was " | |
1878 | "aborted\n", c); | |
1879 | return_status = IO_ERROR; | |
1da177e4 | 1880 | break; |
7c832835 BH |
1881 | case CMD_ABORT_FAILED: |
1882 | printk(KERN_WARNING "cciss: cmd %p reports " | |
1883 | "abort failed\n", c); | |
1884 | return_status = IO_ERROR; | |
1885 | break; | |
1886 | case CMD_UNSOLICITED_ABORT: | |
1887 | printk(KERN_WARNING | |
1888 | "cciss%d: unsolicited abort %p\n", ctlr, c); | |
1889 | if (c->retry_count < MAX_CMD_RETRIES) { | |
1890 | printk(KERN_WARNING | |
1891 | "cciss%d: retrying %p\n", ctlr, c); | |
1892 | c->retry_count++; | |
1893 | /* erase the old error information */ | |
1894 | memset(c->err_info, 0, | |
1895 | sizeof(ErrorInfo_struct)); | |
1896 | return_status = IO_OK; | |
1897 | INIT_COMPLETION(wait); | |
1898 | goto resend_cmd2; | |
1899 | } | |
1900 | return_status = IO_ERROR; | |
1901 | break; | |
1902 | default: | |
1903 | printk(KERN_WARNING "cciss: cmd %p returned " | |
1904 | "unknown status %x\n", c, | |
1905 | c->err_info->CommandStatus); | |
1906 | return_status = IO_ERROR; | |
1da177e4 | 1907 | } |
7c832835 | 1908 | } |
1da177e4 | 1909 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
1910 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
1911 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
1912 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
1913 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
1da177e4 | 1914 | cmd_free(h, c, 0); |
7c832835 | 1915 | return return_status; |
1da177e4 | 1916 | } |
7c832835 | 1917 | |
1da177e4 | 1918 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
00988a35 | 1919 | int withirq, sector_t total_size, |
7c832835 BH |
1920 | unsigned int block_size, |
1921 | InquiryData_struct *inq_buff, | |
1922 | drive_info_struct *drv) | |
1da177e4 LT |
1923 | { |
1924 | int return_code; | |
00988a35 MMOD |
1925 | unsigned long t; |
1926 | unsigned long rem; | |
1927 | ||
1da177e4 LT |
1928 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
1929 | if (withirq) | |
1930 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, | |
7c832835 BH |
1931 | inq_buff, sizeof(*inq_buff), 1, |
1932 | logvol, 0xC1, TYPE_CMD); | |
1da177e4 LT |
1933 | else |
1934 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, | |
7c832835 BH |
1935 | sizeof(*inq_buff), 1, logvol, 0xC1, NULL, |
1936 | TYPE_CMD); | |
1da177e4 | 1937 | if (return_code == IO_OK) { |
7c832835 | 1938 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 1939 | printk(KERN_WARNING |
7c832835 BH |
1940 | "cciss: reading geometry failed, volume " |
1941 | "does not support reading geometry\n"); | |
1da177e4 LT |
1942 | drv->block_size = block_size; |
1943 | drv->nr_blocks = total_size; | |
1944 | drv->heads = 255; | |
7c832835 | 1945 | drv->sectors = 32; // Sectors per track |
00988a35 MMOD |
1946 | t = drv->heads * drv->sectors; |
1947 | drv->cylinders = total_size; | |
1948 | rem = do_div(drv->cylinders, t); | |
1da177e4 | 1949 | } else { |
1da177e4 LT |
1950 | drv->block_size = block_size; |
1951 | drv->nr_blocks = total_size; | |
1952 | drv->heads = inq_buff->data_byte[6]; | |
1953 | drv->sectors = inq_buff->data_byte[7]; | |
1954 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
1955 | drv->cylinders += inq_buff->data_byte[5]; | |
1956 | drv->raid_level = inq_buff->data_byte[8]; | |
1957 | t = drv->heads * drv->sectors; | |
1958 | if (t > 1) { | |
00988a35 MMOD |
1959 | drv->cylinders = total_size; |
1960 | rem = do_div(drv->cylinders, t); | |
1da177e4 LT |
1961 | } |
1962 | } | |
7c832835 | 1963 | } else { /* Get geometry failed */ |
1da177e4 LT |
1964 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
1965 | } | |
cc088d10 | 1966 | printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n", |
7c832835 | 1967 | drv->heads, drv->sectors, drv->cylinders); |
1da177e4 | 1968 | } |
7c832835 | 1969 | |
1da177e4 | 1970 | static void |
00988a35 | 1971 | cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size, |
7c832835 | 1972 | unsigned int *block_size) |
1da177e4 | 1973 | { |
00988a35 | 1974 | ReadCapdata_struct *buf; |
1da177e4 | 1975 | int return_code; |
00988a35 MMOD |
1976 | buf = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); |
1977 | if (buf == NULL) { | |
1978 | printk(KERN_WARNING "cciss: out of memory\n"); | |
1979 | return; | |
1980 | } | |
1981 | memset(buf, 0, sizeof(ReadCapdata_struct)); | |
1da177e4 LT |
1982 | if (withirq) |
1983 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
1984 | ctlr, buf, sizeof(ReadCapdata_struct), |
1985 | 1, logvol, 0, TYPE_CMD); | |
1da177e4 LT |
1986 | else |
1987 | return_code = sendcmd(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
1988 | ctlr, buf, sizeof(ReadCapdata_struct), |
1989 | 1, logvol, 0, NULL, TYPE_CMD); | |
1da177e4 | 1990 | if (return_code == IO_OK) { |
00988a35 MMOD |
1991 | *total_size = be32_to_cpu(*(__u32 *) buf->total_size)+1; |
1992 | *block_size = be32_to_cpu(*(__u32 *) buf->block_size); | |
7c832835 | 1993 | } else { /* read capacity command failed */ |
1da177e4 LT |
1994 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
1995 | *total_size = 0; | |
1996 | *block_size = BLOCK_SIZE; | |
1997 | } | |
00988a35 MMOD |
1998 | if (*total_size != (__u32) 0) |
1999 | printk(KERN_INFO " blocks= %lld block_size= %d\n", | |
2000 | *total_size, *block_size); | |
2001 | kfree(buf); | |
2002 | return; | |
2003 | } | |
2004 | ||
2005 | static void | |
2006 | cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) | |
2007 | { | |
2008 | ReadCapdata_struct_16 *buf; | |
2009 | int return_code; | |
2010 | buf = kmalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2011 | if (buf == NULL) { | |
2012 | printk(KERN_WARNING "cciss: out of memory\n"); | |
2013 | return; | |
2014 | } | |
2015 | memset(buf, 0, sizeof(ReadCapdata_struct_16)); | |
2016 | if (withirq) { | |
2017 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, | |
2018 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2019 | 1, logvol, 0, TYPE_CMD); | |
2020 | } | |
2021 | else { | |
2022 | return_code = sendcmd(CCISS_READ_CAPACITY_16, | |
2023 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2024 | 1, logvol, 0, NULL, TYPE_CMD); | |
2025 | } | |
2026 | if (return_code == IO_OK) { | |
2027 | *total_size = be64_to_cpu(*(__u64 *) buf->total_size)+1; | |
2028 | *block_size = be32_to_cpu(*(__u32 *) buf->block_size); | |
2029 | } else { /* read capacity command failed */ | |
2030 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
2031 | *total_size = 0; | |
2032 | *block_size = BLOCK_SIZE; | |
2033 | } | |
2034 | printk(KERN_INFO " blocks= %lld block_size= %d\n", | |
7c832835 | 2035 | *total_size, *block_size); |
00988a35 | 2036 | kfree(buf); |
1da177e4 LT |
2037 | return; |
2038 | } | |
2039 | ||
1da177e4 LT |
2040 | static int cciss_revalidate(struct gendisk *disk) |
2041 | { | |
2042 | ctlr_info_t *h = get_host(disk); | |
2043 | drive_info_struct *drv = get_drv(disk); | |
2044 | int logvol; | |
7c832835 | 2045 | int FOUND = 0; |
1da177e4 | 2046 | unsigned int block_size; |
00988a35 | 2047 | sector_t total_size; |
1da177e4 LT |
2048 | InquiryData_struct *inq_buff = NULL; |
2049 | ||
7c832835 BH |
2050 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
2051 | if (h->drv[logvol].LunID == drv->LunID) { | |
2052 | FOUND = 1; | |
1da177e4 LT |
2053 | break; |
2054 | } | |
2055 | } | |
2056 | ||
7c832835 BH |
2057 | if (!FOUND) |
2058 | return 1; | |
1da177e4 | 2059 | |
7c832835 BH |
2060 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2061 | if (inq_buff == NULL) { | |
2062 | printk(KERN_WARNING "cciss: out of memory\n"); | |
7c832835 BH |
2063 | return 1; |
2064 | } | |
00988a35 MMOD |
2065 | if (h->cciss_read == CCISS_READ_10) { |
2066 | cciss_read_capacity(h->ctlr, logvol, 1, | |
2067 | &total_size, &block_size); | |
2068 | } else { | |
2069 | cciss_read_capacity_16(h->ctlr, logvol, 1, | |
2070 | &total_size, &block_size); | |
2071 | } | |
7c832835 BH |
2072 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, |
2073 | inq_buff, drv); | |
1da177e4 | 2074 | |
ad2b9312 | 2075 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
1da177e4 LT |
2076 | set_capacity(disk, drv->nr_blocks); |
2077 | ||
1da177e4 LT |
2078 | kfree(inq_buff); |
2079 | return 0; | |
2080 | } | |
2081 | ||
2082 | /* | |
2083 | * Wait polling for a command to complete. | |
2084 | * The memory mapped FIFO is polled for the completion. | |
2085 | * Used only at init time, interrupts from the HBA are disabled. | |
2086 | */ | |
2087 | static unsigned long pollcomplete(int ctlr) | |
2088 | { | |
2089 | unsigned long done; | |
2090 | int i; | |
2091 | ||
2092 | /* Wait (up to 20 seconds) for a command to complete */ | |
2093 | ||
2094 | for (i = 20 * HZ; i > 0; i--) { | |
2095 | done = hba[ctlr]->access.command_completed(hba[ctlr]); | |
86e84862 NA |
2096 | if (done == FIFO_EMPTY) |
2097 | schedule_timeout_uninterruptible(1); | |
2098 | else | |
e2019b58 | 2099 | return done; |
1da177e4 LT |
2100 | } |
2101 | /* Invalid address to tell caller we ran out of time */ | |
2102 | return 1; | |
2103 | } | |
3da8b713 | 2104 | |
2105 | static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) | |
2106 | { | |
2107 | /* We get in here if sendcmd() is polling for completions | |
7c832835 BH |
2108 | and gets some command back that it wasn't expecting -- |
2109 | something other than that which it just sent down. | |
2110 | Ordinarily, that shouldn't happen, but it can happen when | |
3da8b713 | 2111 | the scsi tape stuff gets into error handling mode, and |
7c832835 | 2112 | starts using sendcmd() to try to abort commands and |
3da8b713 | 2113 | reset tape drives. In that case, sendcmd may pick up |
2114 | completions of commands that were sent to logical drives | |
7c832835 | 2115 | through the block i/o system, or cciss ioctls completing, etc. |
3da8b713 | 2116 | In that case, we need to save those completions for later |
2117 | processing by the interrupt handler. | |
7c832835 | 2118 | */ |
3da8b713 | 2119 | |
2120 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2121 | struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects; |
3da8b713 | 2122 | |
2123 | /* If it's not the scsi tape stuff doing error handling, (abort */ | |
2124 | /* or reset) then we don't expect anything weird. */ | |
2125 | if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) { | |
2126 | #endif | |
7c832835 BH |
2127 | printk(KERN_WARNING "cciss cciss%d: SendCmd " |
2128 | "Invalid command list address returned! (%lx)\n", | |
2129 | ctlr, complete); | |
3da8b713 | 2130 | /* not much we can do. */ |
2131 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2132 | return 1; | |
2133 | } | |
2134 | ||
2135 | /* We've sent down an abort or reset, but something else | |
2136 | has completed */ | |
2137 | if (srl->ncompletions >= (NR_CMDS + 2)) { | |
2138 | /* Uh oh. No room to save it for later... */ | |
2139 | printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, " | |
7c832835 | 2140 | "reject list overflow, command lost!\n", ctlr); |
3da8b713 | 2141 | return 1; |
2142 | } | |
2143 | /* Save it for later */ | |
2144 | srl->complete[srl->ncompletions] = complete; | |
2145 | srl->ncompletions++; | |
2146 | #endif | |
2147 | return 0; | |
2148 | } | |
2149 | ||
1da177e4 | 2150 | /* |
7c832835 BH |
2151 | * Send a command to the controller, and wait for it to complete. |
2152 | * Only used at init time. | |
1da177e4 | 2153 | */ |
7c832835 BH |
2154 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, |
2155 | 1: address logical volume log_unit, | |
2156 | 2: periph device address is scsi3addr */ | |
2157 | unsigned int log_unit, | |
2158 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) | |
1da177e4 LT |
2159 | { |
2160 | CommandList_struct *c; | |
2161 | int i; | |
2162 | unsigned long complete; | |
7c832835 | 2163 | ctlr_info_t *info_p = hba[ctlr]; |
1da177e4 | 2164 | u64bit buff_dma_handle; |
3da8b713 | 2165 | int status, done = 0; |
1da177e4 LT |
2166 | |
2167 | if ((c = cmd_alloc(info_p, 1)) == NULL) { | |
2168 | printk(KERN_WARNING "cciss: unable to get memory"); | |
e2019b58 | 2169 | return IO_ERROR; |
1da177e4 LT |
2170 | } |
2171 | status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 2172 | log_unit, page_code, scsi3addr, cmd_type); |
1da177e4 LT |
2173 | if (status != IO_OK) { |
2174 | cmd_free(info_p, c, 1); | |
2175 | return status; | |
2176 | } | |
7c832835 | 2177 | resend_cmd1: |
1da177e4 | 2178 | /* |
7c832835 BH |
2179 | * Disable interrupt |
2180 | */ | |
1da177e4 LT |
2181 | #ifdef CCISS_DEBUG |
2182 | printk(KERN_DEBUG "cciss: turning intr off\n"); | |
7c832835 BH |
2183 | #endif /* CCISS_DEBUG */ |
2184 | info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF); | |
2185 | ||
1da177e4 | 2186 | /* Make sure there is room in the command FIFO */ |
7c832835 | 2187 | /* Actually it should be completely empty at this time */ |
3da8b713 | 2188 | /* unless we are in here doing error handling for the scsi */ |
2189 | /* tape side of the driver. */ | |
7c832835 | 2190 | for (i = 200000; i > 0; i--) { |
1da177e4 | 2191 | /* if fifo isn't full go */ |
7c832835 BH |
2192 | if (!(info_p->access.fifo_full(info_p))) { |
2193 | ||
2194 | break; | |
2195 | } | |
2196 | udelay(10); | |
2197 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," | |
2198 | " waiting!\n", ctlr); | |
2199 | } | |
2200 | /* | |
2201 | * Send the cmd | |
2202 | */ | |
2203 | info_p->access.submit_command(info_p, c); | |
3da8b713 | 2204 | done = 0; |
2205 | do { | |
2206 | complete = pollcomplete(ctlr); | |
1da177e4 LT |
2207 | |
2208 | #ifdef CCISS_DEBUG | |
3da8b713 | 2209 | printk(KERN_DEBUG "cciss: command completed\n"); |
7c832835 | 2210 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2211 | |
3da8b713 | 2212 | if (complete == 1) { |
7c832835 BH |
2213 | printk(KERN_WARNING |
2214 | "cciss cciss%d: SendCmd Timeout out, " | |
2215 | "No command list address returned!\n", ctlr); | |
3da8b713 | 2216 | status = IO_ERROR; |
2217 | done = 1; | |
2218 | break; | |
2219 | } | |
2220 | ||
2221 | /* This will need to change for direct lookup completions */ | |
7c832835 BH |
2222 | if ((complete & CISS_ERROR_BIT) |
2223 | && (complete & ~CISS_ERROR_BIT) == c->busaddr) { | |
2224 | /* if data overrun or underun on Report command | |
2225 | ignore it | |
2226 | */ | |
1da177e4 LT |
2227 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || |
2228 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || | |
2229 | (c->Request.CDB[0] == CISS_INQUIRY)) && | |
7c832835 BH |
2230 | ((c->err_info->CommandStatus == |
2231 | CMD_DATA_OVERRUN) || | |
2232 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN) | |
2233 | )) { | |
1da177e4 LT |
2234 | complete = c->busaddr; |
2235 | } else { | |
2236 | if (c->err_info->CommandStatus == | |
7c832835 | 2237 | CMD_UNSOLICITED_ABORT) { |
1da177e4 | 2238 | printk(KERN_WARNING "cciss%d: " |
7c832835 BH |
2239 | "unsolicited abort %p\n", |
2240 | ctlr, c); | |
1da177e4 LT |
2241 | if (c->retry_count < MAX_CMD_RETRIES) { |
2242 | printk(KERN_WARNING | |
7c832835 BH |
2243 | "cciss%d: retrying %p\n", |
2244 | ctlr, c); | |
1da177e4 LT |
2245 | c->retry_count++; |
2246 | /* erase the old error */ | |
2247 | /* information */ | |
2248 | memset(c->err_info, 0, | |
7c832835 BH |
2249 | sizeof |
2250 | (ErrorInfo_struct)); | |
1da177e4 LT |
2251 | goto resend_cmd1; |
2252 | } else { | |
2253 | printk(KERN_WARNING | |
7c832835 BH |
2254 | "cciss%d: retried %p too " |
2255 | "many times\n", ctlr, c); | |
1da177e4 LT |
2256 | status = IO_ERROR; |
2257 | goto cleanup1; | |
2258 | } | |
7c832835 BH |
2259 | } else if (c->err_info->CommandStatus == |
2260 | CMD_UNABORTABLE) { | |
2261 | printk(KERN_WARNING | |
2262 | "cciss%d: command could not be aborted.\n", | |
2263 | ctlr); | |
3da8b713 | 2264 | status = IO_ERROR; |
2265 | goto cleanup1; | |
1da177e4 LT |
2266 | } |
2267 | printk(KERN_WARNING "ciss ciss%d: sendcmd" | |
7c832835 BH |
2268 | " Error %x \n", ctlr, |
2269 | c->err_info->CommandStatus); | |
1da177e4 | 2270 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
7c832835 BH |
2271 | " offensive info\n" |
2272 | " size %x\n num %x value %x\n", | |
2273 | ctlr, | |
2274 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2275 | offense_size, | |
2276 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2277 | offense_num, | |
2278 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2279 | offense_value); | |
1da177e4 LT |
2280 | status = IO_ERROR; |
2281 | goto cleanup1; | |
2282 | } | |
2283 | } | |
3da8b713 | 2284 | /* This will need changing for direct lookup completions */ |
7c832835 | 2285 | if (complete != c->busaddr) { |
3da8b713 | 2286 | if (add_sendcmd_reject(cmd, ctlr, complete) != 0) { |
7c832835 | 2287 | BUG(); /* we are pretty much hosed if we get here. */ |
3da8b713 | 2288 | } |
2289 | continue; | |
7c832835 | 2290 | } else |
3da8b713 | 2291 | done = 1; |
7c832835 BH |
2292 | } while (!done); |
2293 | ||
2294 | cleanup1: | |
1da177e4 | 2295 | /* unlock the data buffer from DMA */ |
bb2a37bf MM |
2296 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2297 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
1da177e4 | 2298 | pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val, |
7c832835 | 2299 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
3da8b713 | 2300 | #ifdef CONFIG_CISS_SCSI_TAPE |
2301 | /* if we saved some commands for later, process them now. */ | |
2302 | if (info_p->scsi_rejects.ncompletions > 0) | |
7d12e780 | 2303 | do_cciss_intr(0, info_p); |
3da8b713 | 2304 | #endif |
1da177e4 | 2305 | cmd_free(info_p, c, 1); |
e2019b58 | 2306 | return status; |
7c832835 BH |
2307 | } |
2308 | ||
1da177e4 LT |
2309 | /* |
2310 | * Map (physical) PCI mem into (virtual) kernel space | |
2311 | */ | |
2312 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2313 | { | |
7c832835 BH |
2314 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2315 | ulong page_offs = ((ulong) base) - page_base; | |
2316 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2317 | |
7c832835 | 2318 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2319 | } |
2320 | ||
7c832835 BH |
2321 | /* |
2322 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2323 | * the Q to wait for completion. | |
2324 | */ | |
2325 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
2326 | { |
2327 | CommandList_struct *c; | |
7c832835 BH |
2328 | |
2329 | while ((c = h->reqQ) != NULL) { | |
1da177e4 LT |
2330 | /* can't do anything if fifo is full */ |
2331 | if ((h->access.fifo_full(h))) { | |
2332 | printk(KERN_WARNING "cciss: fifo full\n"); | |
2333 | break; | |
2334 | } | |
2335 | ||
7c832835 | 2336 | /* Get the first entry from the Request Q */ |
1da177e4 LT |
2337 | removeQ(&(h->reqQ), c); |
2338 | h->Qdepth--; | |
7c832835 BH |
2339 | |
2340 | /* Tell the controller execute command */ | |
1da177e4 | 2341 | h->access.submit_command(h, c); |
7c832835 BH |
2342 | |
2343 | /* Put job onto the completed Q */ | |
2344 | addQ(&(h->cmpQ), c); | |
1da177e4 LT |
2345 | } |
2346 | } | |
7c832835 | 2347 | |
1da177e4 LT |
2348 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
2349 | /* Zeros out the error record and then resends the command back */ | |
2350 | /* to the controller */ | |
7c832835 | 2351 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
2352 | { |
2353 | /* erase the old error information */ | |
2354 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2355 | ||
2356 | /* add it to software queue and then send it to the controller */ | |
7c832835 | 2357 | addQ(&(h->reqQ), c); |
1da177e4 | 2358 | h->Qdepth++; |
7c832835 | 2359 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
2360 | h->maxQsinceinit = h->Qdepth; |
2361 | ||
2362 | start_io(h); | |
2363 | } | |
a9925a06 | 2364 | |
7c832835 | 2365 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
2366 | * buffers for the completed job. Note that this function does not need |
2367 | * to hold the hba/queue lock. | |
7c832835 BH |
2368 | */ |
2369 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
2370 | int timeout) | |
1da177e4 LT |
2371 | { |
2372 | int status = 1; | |
1da177e4 | 2373 | int retry_cmd = 0; |
7c832835 | 2374 | |
1da177e4 | 2375 | if (timeout) |
7c832835 | 2376 | status = 0; |
1da177e4 | 2377 | |
7c832835 BH |
2378 | if (cmd->err_info->CommandStatus != 0) { /* an error has occurred */ |
2379 | switch (cmd->err_info->CommandStatus) { | |
1da177e4 | 2380 | unsigned char sense_key; |
7c832835 BH |
2381 | case CMD_TARGET_STATUS: |
2382 | status = 0; | |
2383 | ||
2384 | if (cmd->err_info->ScsiStatus == 0x02) { | |
2385 | printk(KERN_WARNING "cciss: cmd %p " | |
2386 | "has CHECK CONDITION " | |
2387 | " byte 2 = 0x%x\n", cmd, | |
2388 | cmd->err_info->SenseInfo[2] | |
2389 | ); | |
2390 | /* check the sense key */ | |
2391 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
2392 | /* no status or recovered error */ | |
2393 | if ((sense_key == 0x0) || (sense_key == 0x1)) { | |
2394 | status = 1; | |
1da177e4 | 2395 | } |
7c832835 BH |
2396 | } else { |
2397 | printk(KERN_WARNING "cciss: cmd %p " | |
2398 | "has SCSI Status 0x%x\n", | |
2399 | cmd, cmd->err_info->ScsiStatus); | |
2400 | } | |
1da177e4 | 2401 | break; |
7c832835 BH |
2402 | case CMD_DATA_UNDERRUN: |
2403 | printk(KERN_WARNING "cciss: cmd %p has" | |
2404 | " completed with data underrun " | |
2405 | "reported\n", cmd); | |
1da177e4 | 2406 | break; |
7c832835 BH |
2407 | case CMD_DATA_OVERRUN: |
2408 | printk(KERN_WARNING "cciss: cmd %p has" | |
2409 | " completed with data overrun " | |
2410 | "reported\n", cmd); | |
1da177e4 | 2411 | break; |
7c832835 BH |
2412 | case CMD_INVALID: |
2413 | printk(KERN_WARNING "cciss: cmd %p is " | |
2414 | "reported invalid\n", cmd); | |
2415 | status = 0; | |
1da177e4 | 2416 | break; |
7c832835 BH |
2417 | case CMD_PROTOCOL_ERR: |
2418 | printk(KERN_WARNING "cciss: cmd %p has " | |
2419 | "protocol error \n", cmd); | |
2420 | status = 0; | |
1da177e4 | 2421 | break; |
7c832835 BH |
2422 | case CMD_HARDWARE_ERR: |
2423 | printk(KERN_WARNING "cciss: cmd %p had " | |
2424 | " hardware error\n", cmd); | |
2425 | status = 0; | |
1da177e4 | 2426 | break; |
7c832835 BH |
2427 | case CMD_CONNECTION_LOST: |
2428 | printk(KERN_WARNING "cciss: cmd %p had " | |
2429 | "connection lost\n", cmd); | |
2430 | status = 0; | |
1da177e4 | 2431 | break; |
7c832835 BH |
2432 | case CMD_ABORTED: |
2433 | printk(KERN_WARNING "cciss: cmd %p was " | |
2434 | "aborted\n", cmd); | |
2435 | status = 0; | |
1da177e4 | 2436 | break; |
7c832835 BH |
2437 | case CMD_ABORT_FAILED: |
2438 | printk(KERN_WARNING "cciss: cmd %p reports " | |
2439 | "abort failed\n", cmd); | |
2440 | status = 0; | |
1da177e4 | 2441 | break; |
7c832835 BH |
2442 | case CMD_UNSOLICITED_ABORT: |
2443 | printk(KERN_WARNING "cciss%d: unsolicited " | |
2444 | "abort %p\n", h->ctlr, cmd); | |
2445 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
2446 | retry_cmd = 1; | |
2447 | printk(KERN_WARNING | |
2448 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
2449 | cmd->retry_count++; | |
2450 | } else | |
2451 | printk(KERN_WARNING | |
2452 | "cciss%d: %p retried too " | |
2453 | "many times\n", h->ctlr, cmd); | |
2454 | status = 0; | |
2455 | break; | |
2456 | case CMD_TIMEOUT: | |
2457 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
2458 | status = 0; | |
2459 | break; | |
2460 | default: | |
2461 | printk(KERN_WARNING "cciss: cmd %p returned " | |
2462 | "unknown status %x\n", cmd, | |
2463 | cmd->err_info->CommandStatus); | |
2464 | status = 0; | |
1da177e4 LT |
2465 | } |
2466 | } | |
2467 | /* We need to return this command */ | |
7c832835 BH |
2468 | if (retry_cmd) { |
2469 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 2470 | return; |
7c832835 | 2471 | } |
1da177e4 | 2472 | |
a9925a06 JA |
2473 | cmd->rq->completion_data = cmd; |
2474 | cmd->rq->errors = status; | |
2056a782 | 2475 | blk_add_trace_rq(cmd->rq->q, cmd->rq, BLK_TA_COMPLETE); |
a9925a06 | 2476 | blk_complete_request(cmd->rq); |
1da177e4 LT |
2477 | } |
2478 | ||
7c832835 BH |
2479 | /* |
2480 | * Get a request and submit it to the controller. | |
1da177e4 LT |
2481 | */ |
2482 | static void do_cciss_request(request_queue_t *q) | |
2483 | { | |
7c832835 | 2484 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 2485 | CommandList_struct *c; |
00988a35 MMOD |
2486 | sector_t start_blk; |
2487 | int seg; | |
1da177e4 LT |
2488 | struct request *creq; |
2489 | u64bit temp64; | |
2490 | struct scatterlist tmp_sg[MAXSGENTRIES]; | |
2491 | drive_info_struct *drv; | |
2492 | int i, dir; | |
2493 | ||
2494 | /* We call start_io here in case there is a command waiting on the | |
2495 | * queue that has not been sent. | |
7c832835 | 2496 | */ |
1da177e4 LT |
2497 | if (blk_queue_plugged(q)) |
2498 | goto startio; | |
2499 | ||
7c832835 | 2500 | queue: |
1da177e4 LT |
2501 | creq = elv_next_request(q); |
2502 | if (!creq) | |
2503 | goto startio; | |
2504 | ||
089fe1b2 | 2505 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
1da177e4 | 2506 | |
7c832835 | 2507 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
2508 | goto full; |
2509 | ||
2510 | blkdev_dequeue_request(creq); | |
2511 | ||
2512 | spin_unlock_irq(q->queue_lock); | |
2513 | ||
2514 | c->cmd_type = CMD_RWREQ; | |
2515 | c->rq = creq; | |
7c832835 BH |
2516 | |
2517 | /* fill in the request */ | |
1da177e4 | 2518 | drv = creq->rq_disk->private_data; |
7c832835 | 2519 | c->Header.ReplyQueue = 0; // unused in simple mode |
33079b21 MM |
2520 | /* got command from pool, so use the command block index instead */ |
2521 | /* for direct lookups. */ | |
2522 | /* The first 2 bits are reserved for controller error reporting. */ | |
2523 | c->Header.Tag.lower = (c->cmdindex << 3); | |
7c832835 BH |
2524 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
2525 | c->Header.LUN.LogDev.VolId = drv->LunID; | |
1da177e4 | 2526 | c->Header.LUN.LogDev.Mode = 1; |
7c832835 BH |
2527 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
2528 | c->Request.Type.Type = TYPE_CMD; // It is a command. | |
2529 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2530 | c->Request.Type.Direction = | |
00988a35 | 2531 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
7c832835 BH |
2532 | c->Request.Timeout = 0; // Don't time out |
2533 | c->Request.CDB[0] = | |
00988a35 | 2534 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
1da177e4 LT |
2535 | start_blk = creq->sector; |
2536 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2537 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", (int)creq->sector, |
2538 | (int)creq->nr_sectors); | |
2539 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
2540 | |
2541 | seg = blk_rq_map_sg(q, creq, tmp_sg); | |
2542 | ||
7c832835 | 2543 | /* get the DMA records for the setup */ |
1da177e4 LT |
2544 | if (c->Request.Type.Direction == XFER_READ) |
2545 | dir = PCI_DMA_FROMDEVICE; | |
2546 | else | |
2547 | dir = PCI_DMA_TODEVICE; | |
2548 | ||
7c832835 | 2549 | for (i = 0; i < seg; i++) { |
1da177e4 LT |
2550 | c->SG[i].Len = tmp_sg[i].length; |
2551 | temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page, | |
7c832835 BH |
2552 | tmp_sg[i].offset, |
2553 | tmp_sg[i].length, dir); | |
1da177e4 | 2554 | c->SG[i].Addr.lower = temp64.val32.lower; |
7c832835 BH |
2555 | c->SG[i].Addr.upper = temp64.val32.upper; |
2556 | c->SG[i].Ext = 0; // we are not chaining | |
1da177e4 | 2557 | } |
7c832835 BH |
2558 | /* track how many SG entries we are using */ |
2559 | if (seg > h->maxSG) | |
2560 | h->maxSG = seg; | |
1da177e4 LT |
2561 | |
2562 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2563 | printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", |
2564 | creq->nr_sectors, seg); | |
2565 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
2566 | |
2567 | c->Header.SGList = c->Header.SGTotal = seg; | |
00988a35 MMOD |
2568 | if(h->cciss_read == CCISS_READ_10) { |
2569 | c->Request.CDB[1] = 0; | |
2570 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB | |
2571 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; | |
2572 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
2573 | c->Request.CDB[5] = start_blk & 0xff; | |
2574 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB | |
2575 | c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff; | |
2576 | c->Request.CDB[8] = creq->nr_sectors & 0xff; | |
2577 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; | |
2578 | } else { | |
2579 | c->Request.CDBLen = 16; | |
2580 | c->Request.CDB[1]= 0; | |
2581 | c->Request.CDB[2]= (start_blk >> 56) & 0xff; //MSB | |
2582 | c->Request.CDB[3]= (start_blk >> 48) & 0xff; | |
2583 | c->Request.CDB[4]= (start_blk >> 40) & 0xff; | |
2584 | c->Request.CDB[5]= (start_blk >> 32) & 0xff; | |
2585 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; | |
2586 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
2587 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
2588 | c->Request.CDB[9]= start_blk & 0xff; | |
2589 | c->Request.CDB[10]= (creq->nr_sectors >> 24) & 0xff; | |
2590 | c->Request.CDB[11]= (creq->nr_sectors >> 16) & 0xff; | |
2591 | c->Request.CDB[12]= (creq->nr_sectors >> 8) & 0xff; | |
2592 | c->Request.CDB[13]= creq->nr_sectors & 0xff; | |
2593 | c->Request.CDB[14] = c->Request.CDB[15] = 0; | |
2594 | } | |
1da177e4 LT |
2595 | |
2596 | spin_lock_irq(q->queue_lock); | |
2597 | ||
7c832835 | 2598 | addQ(&(h->reqQ), c); |
1da177e4 | 2599 | h->Qdepth++; |
7c832835 BH |
2600 | if (h->Qdepth > h->maxQsinceinit) |
2601 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
2602 | |
2603 | goto queue; | |
00988a35 | 2604 | full: |
1da177e4 | 2605 | blk_stop_queue(q); |
00988a35 | 2606 | startio: |
1da177e4 LT |
2607 | /* We will already have the driver lock here so not need |
2608 | * to lock it. | |
7c832835 | 2609 | */ |
1da177e4 LT |
2610 | start_io(h); |
2611 | } | |
2612 | ||
3da8b713 | 2613 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
2614 | { | |
2615 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2616 | /* Any rejects from sendcmd() lying around? Process them first */ | |
2617 | if (h->scsi_rejects.ncompletions == 0) | |
2618 | return h->access.command_completed(h); | |
2619 | else { | |
2620 | struct sendcmd_reject_list *srl; | |
2621 | int n; | |
2622 | srl = &h->scsi_rejects; | |
2623 | n = --srl->ncompletions; | |
2624 | /* printk("cciss%d: processing saved reject\n", h->ctlr); */ | |
2625 | printk("p"); | |
2626 | return srl->complete[n]; | |
2627 | } | |
2628 | #else | |
2629 | return h->access.command_completed(h); | |
2630 | #endif | |
2631 | } | |
2632 | ||
2633 | static inline int interrupt_pending(ctlr_info_t *h) | |
2634 | { | |
2635 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2636 | return (h->access.intr_pending(h) |
3da8b713 | 2637 | || (h->scsi_rejects.ncompletions > 0)); |
2638 | #else | |
2639 | return h->access.intr_pending(h); | |
2640 | #endif | |
2641 | } | |
2642 | ||
2643 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
2644 | { | |
2645 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
2646 | return (((h->access.intr_pending(h) == 0) || |
2647 | (h->interrupts_enabled == 0)) | |
2648 | && (h->scsi_rejects.ncompletions == 0)); | |
3da8b713 | 2649 | #else |
7c832835 | 2650 | return (((h->access.intr_pending(h) == 0) || |
3da8b713 | 2651 | (h->interrupts_enabled == 0))); |
2652 | #endif | |
2653 | } | |
2654 | ||
7d12e780 | 2655 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
1da177e4 LT |
2656 | { |
2657 | ctlr_info_t *h = dev_id; | |
2658 | CommandList_struct *c; | |
2659 | unsigned long flags; | |
33079b21 | 2660 | __u32 a, a1, a2; |
1da177e4 | 2661 | |
3da8b713 | 2662 | if (interrupt_not_for_us(h)) |
1da177e4 | 2663 | return IRQ_NONE; |
1da177e4 LT |
2664 | /* |
2665 | * If there are completed commands in the completion queue, | |
2666 | * we had better do something about it. | |
2667 | */ | |
2668 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 2669 | while (interrupt_pending(h)) { |
7c832835 | 2670 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
1da177e4 | 2671 | a1 = a; |
33079b21 MM |
2672 | if ((a & 0x04)) { |
2673 | a2 = (a >> 3); | |
2674 | if (a2 >= NR_CMDS) { | |
7c832835 BH |
2675 | printk(KERN_WARNING |
2676 | "cciss: controller cciss%d failed, stopping.\n", | |
2677 | h->ctlr); | |
33079b21 MM |
2678 | fail_all_cmds(h->ctlr); |
2679 | return IRQ_HANDLED; | |
2680 | } | |
2681 | ||
2682 | c = h->cmd_pool + a2; | |
2683 | a = c->busaddr; | |
2684 | ||
2685 | } else { | |
7c832835 | 2686 | a &= ~3; |
33079b21 | 2687 | if ((c = h->cmpQ) == NULL) { |
7c832835 BH |
2688 | printk(KERN_WARNING |
2689 | "cciss: Completion of %08x ignored\n", | |
2690 | a1); | |
2691 | continue; | |
2692 | } | |
2693 | while (c->busaddr != a) { | |
2694 | c = c->next; | |
2695 | if (c == h->cmpQ) | |
2696 | break; | |
2697 | } | |
33079b21 | 2698 | } |
1da177e4 LT |
2699 | /* |
2700 | * If we've found the command, take it off the | |
2701 | * completion Q and free it | |
2702 | */ | |
7c832835 | 2703 | if (c->busaddr == a) { |
1da177e4 LT |
2704 | removeQ(&h->cmpQ, c); |
2705 | if (c->cmd_type == CMD_RWREQ) { | |
2706 | complete_command(h, c, 0); | |
2707 | } else if (c->cmd_type == CMD_IOCTL_PEND) { | |
2708 | complete(c->waiting); | |
2709 | } | |
2710 | # ifdef CONFIG_CISS_SCSI_TAPE | |
2711 | else if (c->cmd_type == CMD_SCSI) | |
2712 | complete_scsi_command(c, 0, a1); | |
2713 | # endif | |
2714 | continue; | |
2715 | } | |
2716 | } | |
2717 | } | |
2718 | ||
1da177e4 LT |
2719 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2720 | return IRQ_HANDLED; | |
2721 | } | |
7c832835 BH |
2722 | |
2723 | /* | |
d14c4ab5 | 2724 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 2725 | * the io functions. |
7c832835 | 2726 | * This is for debug only. |
1da177e4 LT |
2727 | */ |
2728 | #ifdef CCISS_DEBUG | |
7c832835 | 2729 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 LT |
2730 | { |
2731 | int i; | |
2732 | char temp_name[17]; | |
2733 | ||
2734 | printk("Controller Configuration information\n"); | |
2735 | printk("------------------------------------\n"); | |
7c832835 | 2736 | for (i = 0; i < 4; i++) |
1da177e4 | 2737 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
2738 | temp_name[4] = '\0'; |
2739 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 2740 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
2741 | printk(" Transport methods supported = 0x%x\n", |
2742 | readl(&(tb->TransportSupport))); | |
2743 | printk(" Transport methods active = 0x%x\n", | |
2744 | readl(&(tb->TransportActive))); | |
2745 | printk(" Requested transport Method = 0x%x\n", | |
2746 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 2747 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 2748 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 2749 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
2750 | readl(&(tb->HostWrite.CoalIntCount))); |
2751 | printk(" Max outstanding commands = 0x%d\n", | |
2752 | readl(&(tb->CmdsOutMax))); | |
2753 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
2754 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
2755 | temp_name[i] = readb(&(tb->ServerName[i])); |
2756 | temp_name[16] = '\0'; | |
2757 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 2758 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
1da177e4 | 2759 | } |
7c832835 | 2760 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2761 | |
7c832835 | 2762 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
2763 | { |
2764 | int i, offset, mem_type, bar_type; | |
7c832835 | 2765 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
2766 | return 0; |
2767 | offset = 0; | |
7c832835 BH |
2768 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
2769 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
2770 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
2771 | offset += 4; | |
2772 | else { | |
2773 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 2774 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 2775 | switch (mem_type) { |
7c832835 BH |
2776 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
2777 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
2778 | offset += 4; /* 32 bit */ | |
2779 | break; | |
2780 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
2781 | offset += 8; | |
2782 | break; | |
2783 | default: /* reserved in PCI 2.2 */ | |
2784 | printk(KERN_WARNING | |
2785 | "Base address is invalid\n"); | |
2786 | return -1; | |
1da177e4 LT |
2787 | break; |
2788 | } | |
2789 | } | |
7c832835 BH |
2790 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
2791 | return i + 1; | |
1da177e4 LT |
2792 | } |
2793 | return -1; | |
2794 | } | |
2795 | ||
fb86a35b MM |
2796 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
2797 | * controllers that are capable. If not, we use IO-APIC mode. | |
2798 | */ | |
2799 | ||
7c832835 BH |
2800 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
2801 | struct pci_dev *pdev, __u32 board_id) | |
fb86a35b MM |
2802 | { |
2803 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
2804 | int err; |
2805 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
2806 | {0, 2}, {0, 3} | |
2807 | }; | |
fb86a35b MM |
2808 | |
2809 | /* Some boards advertise MSI but don't really support it */ | |
2810 | if ((board_id == 0x40700E11) || | |
7c832835 BH |
2811 | (board_id == 0x40800E11) || |
2812 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
fb86a35b MM |
2813 | goto default_int_mode; |
2814 | ||
7c832835 BH |
2815 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
2816 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); | |
2817 | if (!err) { | |
2818 | c->intr[0] = cciss_msix_entries[0].vector; | |
2819 | c->intr[1] = cciss_msix_entries[1].vector; | |
2820 | c->intr[2] = cciss_msix_entries[2].vector; | |
2821 | c->intr[3] = cciss_msix_entries[3].vector; | |
2822 | c->msix_vector = 1; | |
2823 | return; | |
2824 | } | |
2825 | if (err > 0) { | |
2826 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
2827 | "available\n", err); | |
2828 | } else { | |
2829 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
2830 | err); | |
2831 | } | |
2832 | } | |
2833 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
2834 | if (!pci_enable_msi(pdev)) { | |
2835 | c->intr[SIMPLE_MODE_INT] = pdev->irq; | |
2836 | c->msi_vector = 1; | |
2837 | return; | |
2838 | } else { | |
2839 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
2840 | c->intr[SIMPLE_MODE_INT] = pdev->irq; | |
2841 | return; | |
2842 | } | |
2843 | } | |
2844 | default_int_mode: | |
2845 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 2846 | /* if we get here we're going to use the default interrupt mode */ |
7c832835 | 2847 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
fb86a35b MM |
2848 | return; |
2849 | } | |
2850 | ||
1da177e4 LT |
2851 | static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
2852 | { | |
2853 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
2854 | __u32 board_id, scratchpad = 0; | |
2855 | __u64 cfg_offset; | |
2856 | __u32 cfg_base_addr; | |
2857 | __u64 cfg_base_addr_index; | |
c33ac89b | 2858 | int i, err; |
1da177e4 LT |
2859 | |
2860 | /* check to see if controller has been disabled */ | |
2861 | /* BEFORE trying to enable it */ | |
7c832835 BH |
2862 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
2863 | if (!(command & 0x02)) { | |
2864 | printk(KERN_WARNING | |
2865 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 2866 | return -ENODEV; |
1da177e4 LT |
2867 | } |
2868 | ||
c33ac89b | 2869 | err = pci_enable_device(pdev); |
7c832835 | 2870 | if (err) { |
1da177e4 | 2871 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 2872 | return err; |
1da177e4 | 2873 | } |
1da177e4 | 2874 | |
4e570309 BH |
2875 | err = pci_request_regions(pdev, "cciss"); |
2876 | if (err) { | |
2877 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 2878 | "aborting\n"); |
4e570309 BH |
2879 | goto err_out_disable_pdev; |
2880 | } | |
2881 | ||
1da177e4 LT |
2882 | subsystem_vendor_id = pdev->subsystem_vendor; |
2883 | subsystem_device_id = pdev->subsystem_device; | |
2884 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
7c832835 | 2885 | subsystem_vendor_id); |
1da177e4 | 2886 | |
1da177e4 LT |
2887 | #ifdef CCISS_DEBUG |
2888 | printk("command = %x\n", command); | |
2889 | printk("irq = %x\n", pdev->irq); | |
2890 | printk("board_id = %x\n", board_id); | |
7c832835 | 2891 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2892 | |
fb86a35b MM |
2893 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
2894 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
2895 | */ | |
2896 | cciss_interrupt_mode(c, pdev, board_id); | |
1da177e4 LT |
2897 | |
2898 | /* | |
2899 | * Memory base addr is first addr , the second points to the config | |
7c832835 | 2900 | * table |
1da177e4 LT |
2901 | */ |
2902 | ||
7c832835 | 2903 | c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */ |
1da177e4 LT |
2904 | #ifdef CCISS_DEBUG |
2905 | printk("address 0 = %x\n", c->paddr); | |
7c832835 | 2906 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
2907 | c->vaddr = remap_pci_mem(c->paddr, 200); |
2908 | ||
2909 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
2910 | * We poll for up to 120 secs, once per 100ms. */ | |
7c832835 | 2911 | for (i = 0; i < 1200; i++) { |
1da177e4 LT |
2912 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
2913 | if (scratchpad == CCISS_FIRMWARE_READY) | |
2914 | break; | |
2915 | set_current_state(TASK_INTERRUPTIBLE); | |
7c832835 | 2916 | schedule_timeout(HZ / 10); /* wait 100ms */ |
1da177e4 LT |
2917 | } |
2918 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
2919 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
c33ac89b | 2920 | err = -ENODEV; |
4e570309 | 2921 | goto err_out_free_res; |
1da177e4 LT |
2922 | } |
2923 | ||
2924 | /* get the address index number */ | |
2925 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
2926 | cfg_base_addr &= (__u32) 0x0000ffff; | |
2927 | #ifdef CCISS_DEBUG | |
2928 | printk("cfg base address = %x\n", cfg_base_addr); | |
7c832835 BH |
2929 | #endif /* CCISS_DEBUG */ |
2930 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); | |
1da177e4 LT |
2931 | #ifdef CCISS_DEBUG |
2932 | printk("cfg base address index = %x\n", cfg_base_addr_index); | |
7c832835 | 2933 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
2934 | if (cfg_base_addr_index == -1) { |
2935 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
c33ac89b | 2936 | err = -ENODEV; |
4e570309 | 2937 | goto err_out_free_res; |
1da177e4 LT |
2938 | } |
2939 | ||
2940 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
2941 | #ifdef CCISS_DEBUG | |
2942 | printk("cfg offset = %x\n", cfg_offset); | |
7c832835 BH |
2943 | #endif /* CCISS_DEBUG */ |
2944 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
2945 | cfg_base_addr_index) + | |
2946 | cfg_offset, sizeof(CfgTable_struct)); | |
1da177e4 LT |
2947 | c->board_id = board_id; |
2948 | ||
2949 | #ifdef CCISS_DEBUG | |
945f390f | 2950 | print_cfg_table(c->cfgtable); |
7c832835 | 2951 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2952 | |
7c832835 | 2953 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
1da177e4 LT |
2954 | if (board_id == products[i].board_id) { |
2955 | c->product_name = products[i].product_name; | |
2956 | c->access = *(products[i].access); | |
2957 | break; | |
2958 | } | |
2959 | } | |
5e8621e8 | 2960 | if (i == ARRAY_SIZE(products)) { |
1da177e4 | 2961 | printk(KERN_WARNING "cciss: Sorry, I don't know how" |
7c832835 BH |
2962 | " to access the Smart Array controller %08lx\n", |
2963 | (unsigned long)board_id); | |
c33ac89b | 2964 | err = -ENODEV; |
4e570309 | 2965 | goto err_out_free_res; |
1da177e4 | 2966 | } |
7c832835 BH |
2967 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
2968 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
2969 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
2970 | (readb(&c->cfgtable->Signature[3]) != 'S')) { | |
1da177e4 | 2971 | printk("Does not appear to be a valid CISS config table\n"); |
c33ac89b | 2972 | err = -ENODEV; |
4e570309 | 2973 | goto err_out_free_res; |
1da177e4 | 2974 | } |
1da177e4 | 2975 | #ifdef CONFIG_X86 |
7c832835 BH |
2976 | { |
2977 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
2978 | __u32 prefetch; | |
2979 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
2980 | prefetch |= 0x100; | |
2981 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
2982 | } | |
1da177e4 LT |
2983 | #endif |
2984 | ||
2985 | #ifdef CCISS_DEBUG | |
2986 | printk("Trying to put board into Simple mode\n"); | |
7c832835 | 2987 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2988 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
7c832835 BH |
2989 | /* Update the field, and then ring the doorbell */ |
2990 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); | |
2991 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); | |
1da177e4 LT |
2992 | |
2993 | /* under certain very rare conditions, this can take awhile. | |
2994 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
2995 | * as we enter this code.) */ | |
7c832835 | 2996 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
1da177e4 LT |
2997 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
2998 | break; | |
2999 | /* delay and try again */ | |
3000 | set_current_state(TASK_INTERRUPTIBLE); | |
3001 | schedule_timeout(10); | |
7c832835 | 3002 | } |
1da177e4 LT |
3003 | |
3004 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3005 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
3006 | readl(c->vaddr + SA5_DOORBELL)); | |
3007 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3008 | #ifdef CCISS_DEBUG |
7c832835 BH |
3009 | print_cfg_table(c->cfgtable); |
3010 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3011 | |
7c832835 | 3012 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
1da177e4 | 3013 | printk(KERN_WARNING "cciss: unable to get board into" |
7c832835 | 3014 | " simple mode\n"); |
c33ac89b | 3015 | err = -ENODEV; |
4e570309 | 3016 | goto err_out_free_res; |
1da177e4 LT |
3017 | } |
3018 | return 0; | |
3019 | ||
7c832835 | 3020 | err_out_free_res: |
4e570309 BH |
3021 | pci_release_regions(pdev); |
3022 | ||
7c832835 | 3023 | err_out_disable_pdev: |
c33ac89b BH |
3024 | pci_disable_device(pdev); |
3025 | return err; | |
1da177e4 LT |
3026 | } |
3027 | ||
7c832835 BH |
3028 | /* |
3029 | * Gets information about the local volumes attached to the controller. | |
3030 | */ | |
1da177e4 LT |
3031 | static void cciss_getgeometry(int cntl_num) |
3032 | { | |
3033 | ReportLunData_struct *ld_buff; | |
1da177e4 LT |
3034 | InquiryData_struct *inq_buff; |
3035 | int return_code; | |
3036 | int i; | |
3037 | int listlength = 0; | |
3038 | __u32 lunid = 0; | |
3039 | int block_size; | |
00988a35 | 3040 | sector_t total_size; |
1da177e4 | 3041 | |
06ff37ff | 3042 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
7c832835 BH |
3043 | if (ld_buff == NULL) { |
3044 | printk(KERN_ERR "cciss: out of memory\n"); | |
3045 | return; | |
3046 | } | |
7c832835 BH |
3047 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
3048 | if (inq_buff == NULL) { | |
3049 | printk(KERN_ERR "cciss: out of memory\n"); | |
1da177e4 | 3050 | kfree(ld_buff); |
7c832835 BH |
3051 | return; |
3052 | } | |
3053 | /* Get the firmware version */ | |
3054 | return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff, | |
3055 | sizeof(InquiryData_struct), 0, 0, 0, NULL, | |
3056 | TYPE_CMD); | |
3057 | if (return_code == IO_OK) { | |
1da177e4 LT |
3058 | hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32]; |
3059 | hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33]; | |
3060 | hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34]; | |
3061 | hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35]; | |
7c832835 BH |
3062 | } else { /* send command failed */ |
3063 | ||
1da177e4 | 3064 | printk(KERN_WARNING "cciss: unable to determine firmware" |
7c832835 | 3065 | " version of controller\n"); |
1da177e4 | 3066 | } |
7c832835 BH |
3067 | /* Get the number of logical volumes */ |
3068 | return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff, | |
3069 | sizeof(ReportLunData_struct), 0, 0, 0, NULL, | |
3070 | TYPE_CMD); | |
1da177e4 | 3071 | |
7c832835 | 3072 | if (return_code == IO_OK) { |
1da177e4 LT |
3073 | #ifdef CCISS_DEBUG |
3074 | printk("LUN Data\n--------------------------\n"); | |
7c832835 BH |
3075 | #endif /* CCISS_DEBUG */ |
3076 | ||
3077 | listlength |= | |
3078 | (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24; | |
3079 | listlength |= | |
3080 | (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16; | |
3081 | listlength |= | |
3082 | (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8; | |
1da177e4 | 3083 | listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]); |
7c832835 BH |
3084 | } else { /* reading number of logical volumes failed */ |
3085 | ||
1da177e4 | 3086 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 3087 | " command failed\n"); |
1da177e4 LT |
3088 | listlength = 0; |
3089 | } | |
7c832835 BH |
3090 | hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry |
3091 | if (hba[cntl_num]->num_luns > CISS_MAX_LUN) { | |
3092 | printk(KERN_ERR | |
3093 | "ciss: only %d number of logical volumes supported\n", | |
3094 | CISS_MAX_LUN); | |
1da177e4 LT |
3095 | hba[cntl_num]->num_luns = CISS_MAX_LUN; |
3096 | } | |
3097 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3098 | printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", |
3099 | ld_buff->LUNListLength[0], ld_buff->LUNListLength[1], | |
3100 | ld_buff->LUNListLength[2], ld_buff->LUNListLength[3], | |
3101 | hba[cntl_num]->num_luns); | |
3102 | #endif /* CCISS_DEBUG */ | |
3103 | ||
3104 | hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns - 1; | |
7c832835 BH |
3105 | for (i = 0; i < CISS_MAX_LUN; i++) { |
3106 | if (i < hba[cntl_num]->num_luns) { | |
3107 | lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) | |
3108 | << 24; | |
3109 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) | |
3110 | << 16; | |
3111 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) | |
3112 | << 8; | |
3113 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
3114 | ||
3115 | hba[cntl_num]->drv[i].LunID = lunid; | |
1da177e4 LT |
3116 | |
3117 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3118 | printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i, |
3119 | ld_buff->LUN[i][0], ld_buff->LUN[i][1], | |
3120 | ld_buff->LUN[i][2], ld_buff->LUN[i][3], | |
3121 | hba[cntl_num]->drv[i].LunID); | |
3122 | #endif /* CCISS_DEBUG */ | |
00988a35 MMOD |
3123 | |
3124 | /* testing to see if 16-byte CDBs are already being used */ | |
3125 | if(hba[cntl_num]->cciss_read == CCISS_READ_16) { | |
3126 | cciss_read_capacity_16(cntl_num, i, 0, | |
7c832835 | 3127 | &total_size, &block_size); |
00988a35 MMOD |
3128 | goto geo_inq; |
3129 | } | |
3130 | cciss_read_capacity(cntl_num, i, 0, &total_size, &block_size); | |
3131 | ||
3132 | /* total_size = last LBA + 1 */ | |
3133 | if(total_size == (__u32) 0) { | |
3134 | cciss_read_capacity_16(cntl_num, i, 0, | |
3135 | &total_size, &block_size); | |
3136 | hba[cntl_num]->cciss_read = CCISS_READ_16; | |
3137 | hba[cntl_num]->cciss_write = CCISS_WRITE_16; | |
3138 | } else { | |
3139 | hba[cntl_num]->cciss_read = CCISS_READ_10; | |
3140 | hba[cntl_num]->cciss_write = CCISS_WRITE_10; | |
3141 | } | |
3142 | geo_inq: | |
ddd47442 | 3143 | cciss_geometry_inquiry(cntl_num, i, 0, total_size, |
7c832835 BH |
3144 | block_size, inq_buff, |
3145 | &hba[cntl_num]->drv[i]); | |
ddd47442 MM |
3146 | } else { |
3147 | /* initialize raid_level to indicate a free space */ | |
3148 | hba[cntl_num]->drv[i].raid_level = -1; | |
3149 | } | |
1da177e4 LT |
3150 | } |
3151 | kfree(ld_buff); | |
1da177e4 | 3152 | kfree(inq_buff); |
7c832835 | 3153 | } |
1da177e4 LT |
3154 | |
3155 | /* Function to find the first free pointer into our hba[] array */ | |
3156 | /* Returns -1 if no free entries are left. */ | |
3157 | static int alloc_cciss_hba(void) | |
3158 | { | |
3159 | struct gendisk *disk[NWD]; | |
3160 | int i, n; | |
3161 | for (n = 0; n < NWD; n++) { | |
3162 | disk[n] = alloc_disk(1 << NWD_SHIFT); | |
3163 | if (!disk[n]) | |
3164 | goto out; | |
3165 | } | |
3166 | ||
7c832835 | 3167 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
3168 | if (!hba[i]) { |
3169 | ctlr_info_t *p; | |
06ff37ff | 3170 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
3171 | if (!p) |
3172 | goto Enomem; | |
1da177e4 LT |
3173 | for (n = 0; n < NWD; n++) |
3174 | p->gendisk[n] = disk[n]; | |
3175 | hba[i] = p; | |
3176 | return i; | |
3177 | } | |
3178 | } | |
3179 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 3180 | " of %d controllers.\n", MAX_CTLR); |
1da177e4 | 3181 | goto out; |
7c832835 | 3182 | Enomem: |
1da177e4 | 3183 | printk(KERN_ERR "cciss: out of memory.\n"); |
7c832835 | 3184 | out: |
1da177e4 LT |
3185 | while (n--) |
3186 | put_disk(disk[n]); | |
3187 | return -1; | |
3188 | } | |
3189 | ||
3190 | static void free_hba(int i) | |
3191 | { | |
3192 | ctlr_info_t *p = hba[i]; | |
3193 | int n; | |
3194 | ||
3195 | hba[i] = NULL; | |
3196 | for (n = 0; n < NWD; n++) | |
3197 | put_disk(p->gendisk[n]); | |
3198 | kfree(p); | |
3199 | } | |
3200 | ||
3201 | /* | |
3202 | * This is it. Find all the controllers and register them. I really hate | |
3203 | * stealing all these major device numbers. | |
3204 | * returns the number of block devices registered. | |
3205 | */ | |
3206 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 3207 | const struct pci_device_id *ent) |
1da177e4 LT |
3208 | { |
3209 | request_queue_t *q; | |
3210 | int i; | |
3211 | int j; | |
3212 | int rc; | |
40aabb58 | 3213 | int dac; |
1da177e4 | 3214 | |
1da177e4 | 3215 | i = alloc_cciss_hba(); |
7c832835 | 3216 | if (i < 0) |
e2019b58 | 3217 | return -1; |
1f8ef380 MM |
3218 | |
3219 | hba[i]->busy_initializing = 1; | |
3220 | ||
1da177e4 LT |
3221 | if (cciss_pci_init(hba[i], pdev) != 0) |
3222 | goto clean1; | |
3223 | ||
3224 | sprintf(hba[i]->devname, "cciss%d", i); | |
3225 | hba[i]->ctlr = i; | |
3226 | hba[i]->pdev = pdev; | |
3227 | ||
3228 | /* configure PCI DMA stuff */ | |
eb0df996 | 3229 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) |
40aabb58 | 3230 | dac = 1; |
eb0df996 | 3231 | else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) |
40aabb58 | 3232 | dac = 0; |
1da177e4 | 3233 | else { |
40aabb58 | 3234 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
3235 | goto clean1; |
3236 | } | |
3237 | ||
3238 | /* | |
3239 | * register with the major number, or get a dynamic major number | |
3240 | * by passing 0 as argument. This is done for greater than | |
3241 | * 8 controller support. | |
3242 | */ | |
3243 | if (i < MAX_CTLR_ORIG) | |
564de74a | 3244 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 3245 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3246 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 3247 | printk(KERN_ERR |
7c832835 BH |
3248 | "cciss: Unable to get major number %d for %s " |
3249 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 3250 | goto clean1; |
7c832835 | 3251 | } else { |
1da177e4 LT |
3252 | if (i >= MAX_CTLR_ORIG) |
3253 | hba[i]->major = rc; | |
3254 | } | |
3255 | ||
3256 | /* make sure the board interrupts are off */ | |
3257 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
7c832835 | 3258 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
69ab3912 | 3259 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
1da177e4 | 3260 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
7c832835 | 3261 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
1da177e4 LT |
3262 | goto clean2; |
3263 | } | |
40aabb58 BH |
3264 | |
3265 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 BH |
3266 | hba[i]->devname, pdev->device, pci_name(pdev), |
3267 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); | |
3268 | ||
3269 | hba[i]->cmd_pool_bits = | |
3270 | kmalloc(((NR_CMDS + BITS_PER_LONG - | |
3271 | 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL); | |
3272 | hba[i]->cmd_pool = (CommandList_struct *) | |
3273 | pci_alloc_consistent(hba[i]->pdev, | |
3274 | NR_CMDS * sizeof(CommandList_struct), | |
3275 | &(hba[i]->cmd_pool_dhandle)); | |
3276 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
3277 | pci_alloc_consistent(hba[i]->pdev, | |
3278 | NR_CMDS * sizeof(ErrorInfo_struct), | |
3279 | &(hba[i]->errinfo_pool_dhandle)); | |
3280 | if ((hba[i]->cmd_pool_bits == NULL) | |
3281 | || (hba[i]->cmd_pool == NULL) | |
3282 | || (hba[i]->errinfo_pool == NULL)) { | |
3283 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
3284 | goto clean4; |
3285 | } | |
3da8b713 | 3286 | #ifdef CONFIG_CISS_SCSI_TAPE |
7c832835 BH |
3287 | hba[i]->scsi_rejects.complete = |
3288 | kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) * | |
3289 | (NR_CMDS + 5), GFP_KERNEL); | |
3da8b713 | 3290 | if (hba[i]->scsi_rejects.complete == NULL) { |
7c832835 | 3291 | printk(KERN_ERR "cciss: out of memory"); |
3da8b713 | 3292 | goto clean4; |
3293 | } | |
3294 | #endif | |
1da177e4 | 3295 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 3296 | |
7c832835 BH |
3297 | /* Initialize the pdev driver private data. |
3298 | have it point to hba[i]. */ | |
1da177e4 | 3299 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
3300 | /* command and error info recs zeroed out before |
3301 | they are used */ | |
3302 | memset(hba[i]->cmd_pool_bits, 0, | |
3303 | ((NR_CMDS + BITS_PER_LONG - | |
3304 | 1) / BITS_PER_LONG) * sizeof(unsigned long)); | |
1da177e4 | 3305 | |
7c832835 BH |
3306 | #ifdef CCISS_DEBUG |
3307 | printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n", i); | |
3308 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
3309 | |
3310 | cciss_getgeometry(i); | |
3311 | ||
3312 | cciss_scsi_setup(i); | |
3313 | ||
3314 | /* Turn the interrupts on so we can service requests */ | |
3315 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
3316 | ||
3317 | cciss_procinit(i); | |
d6dbf42e | 3318 | hba[i]->busy_initializing = 0; |
1da177e4 | 3319 | |
7c832835 | 3320 | for (j = 0; j < NWD; j++) { /* mfm */ |
ad2b9312 MM |
3321 | drive_info_struct *drv = &(hba[i]->drv[j]); |
3322 | struct gendisk *disk = hba[i]->gendisk[j]; | |
3323 | ||
3324 | q = blk_init_queue(do_cciss_request, &hba[i]->lock); | |
3325 | if (!q) { | |
3326 | printk(KERN_ERR | |
7c832835 BH |
3327 | "cciss: unable to allocate queue for disk %d\n", |
3328 | j); | |
ad2b9312 MM |
3329 | break; |
3330 | } | |
3331 | drv->queue = q; | |
3332 | ||
3333 | q->backing_dev_info.ra_pages = READ_AHEAD; | |
a9925a06 JA |
3334 | blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask); |
3335 | ||
3336 | /* This is a hardware imposed limit. */ | |
3337 | blk_queue_max_hw_segments(q, MAXSGENTRIES); | |
1da177e4 | 3338 | |
a9925a06 JA |
3339 | /* This is a limit in the driver and could be eliminated. */ |
3340 | blk_queue_max_phys_segments(q, MAXSGENTRIES); | |
1da177e4 | 3341 | |
a9925a06 | 3342 | blk_queue_max_sectors(q, 512); |
1da177e4 | 3343 | |
a9925a06 | 3344 | blk_queue_softirq_done(q, cciss_softirq_done); |
1da177e4 | 3345 | |
ad2b9312 | 3346 | q->queuedata = hba[i]; |
1da177e4 | 3347 | sprintf(disk->disk_name, "cciss/c%dd%d", i, j); |
1da177e4 LT |
3348 | disk->major = hba[i]->major; |
3349 | disk->first_minor = j << NWD_SHIFT; | |
3350 | disk->fops = &cciss_fops; | |
ad2b9312 | 3351 | disk->queue = q; |
1da177e4 | 3352 | disk->private_data = drv; |
27c0ff86 | 3353 | disk->driverfs_dev = &pdev->dev; |
1da177e4 LT |
3354 | /* we must register the controller even if no disks exist */ |
3355 | /* this is for the online array utilities */ | |
7c832835 | 3356 | if (!drv->heads && j) |
1da177e4 | 3357 | continue; |
ad2b9312 | 3358 | blk_queue_hardsect_size(q, drv->block_size); |
1da177e4 LT |
3359 | set_capacity(disk, drv->nr_blocks); |
3360 | add_disk(disk); | |
3361 | } | |
ad2b9312 | 3362 | |
e2019b58 | 3363 | return 1; |
1da177e4 | 3364 | |
7c832835 | 3365 | clean4: |
3da8b713 | 3366 | #ifdef CONFIG_CISS_SCSI_TAPE |
1acc0b0b | 3367 | kfree(hba[i]->scsi_rejects.complete); |
3da8b713 | 3368 | #endif |
6044ec88 | 3369 | kfree(hba[i]->cmd_pool_bits); |
7c832835 | 3370 | if (hba[i]->cmd_pool) |
1da177e4 | 3371 | pci_free_consistent(hba[i]->pdev, |
7c832835 BH |
3372 | NR_CMDS * sizeof(CommandList_struct), |
3373 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); | |
3374 | if (hba[i]->errinfo_pool) | |
1da177e4 | 3375 | pci_free_consistent(hba[i]->pdev, |
7c832835 BH |
3376 | NR_CMDS * sizeof(ErrorInfo_struct), |
3377 | hba[i]->errinfo_pool, | |
3378 | hba[i]->errinfo_pool_dhandle); | |
fb86a35b | 3379 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
7c832835 | 3380 | clean2: |
1da177e4 | 3381 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3382 | clean1: |
1f8ef380 | 3383 | hba[i]->busy_initializing = 0; |
61808c2b | 3384 | free_hba(i); |
e2019b58 | 3385 | return -1; |
1da177e4 LT |
3386 | } |
3387 | ||
7c832835 | 3388 | static void __devexit cciss_remove_one(struct pci_dev *pdev) |
1da177e4 LT |
3389 | { |
3390 | ctlr_info_t *tmp_ptr; | |
3391 | int i, j; | |
3392 | char flush_buf[4]; | |
7c832835 | 3393 | int return_code; |
1da177e4 | 3394 | |
7c832835 BH |
3395 | if (pci_get_drvdata(pdev) == NULL) { |
3396 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
3397 | return; |
3398 | } | |
3399 | tmp_ptr = pci_get_drvdata(pdev); | |
3400 | i = tmp_ptr->ctlr; | |
7c832835 | 3401 | if (hba[i] == NULL) { |
1da177e4 | 3402 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 3403 | "already be removed \n"); |
1da177e4 LT |
3404 | return; |
3405 | } | |
3406 | /* Turn board interrupts off and send the flush cache command */ | |
3407 | /* sendcmd will turn off interrupt, and send the flush... | |
7c832835 | 3408 | * To write all data in the battery backed cache to disks */ |
1da177e4 LT |
3409 | memset(flush_buf, 0, 4); |
3410 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL, | |
7c832835 BH |
3411 | TYPE_CMD); |
3412 | if (return_code != IO_OK) { | |
3413 | printk(KERN_WARNING "Error Flushing cache on controller %d\n", | |
3414 | i); | |
1da177e4 | 3415 | } |
fb86a35b MM |
3416 | free_irq(hba[i]->intr[2], hba[i]); |
3417 | ||
3418 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3419 | if (hba[i]->msix_vector) |
3420 | pci_disable_msix(hba[i]->pdev); | |
3421 | else if (hba[i]->msi_vector) | |
3422 | pci_disable_msi(hba[i]->pdev); | |
3423 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 3424 | |
1da177e4 | 3425 | iounmap(hba[i]->vaddr); |
7c832835 | 3426 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
1da177e4 | 3427 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 BH |
3428 | remove_proc_entry(hba[i]->devname, proc_cciss); |
3429 | ||
1da177e4 LT |
3430 | /* remove it from the disk list */ |
3431 | for (j = 0; j < NWD; j++) { | |
3432 | struct gendisk *disk = hba[i]->gendisk[j]; | |
6f5a0f7c | 3433 | if (disk) { |
3434 | request_queue_t *q = disk->queue; | |
3435 | ||
7c832835 | 3436 | if (disk->flags & GENHD_FL_UP) |
6f5a0f7c | 3437 | del_gendisk(disk); |
3438 | if (q) | |
3439 | blk_cleanup_queue(q); | |
6a445d3b | 3440 | } |
1da177e4 LT |
3441 | } |
3442 | ||
1da177e4 LT |
3443 | pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct), |
3444 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); | |
7c832835 BH |
3445 | pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(ErrorInfo_struct), |
3446 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); | |
1da177e4 | 3447 | kfree(hba[i]->cmd_pool_bits); |
3da8b713 | 3448 | #ifdef CONFIG_CISS_SCSI_TAPE |
3449 | kfree(hba[i]->scsi_rejects.complete); | |
3450 | #endif | |
7c832835 | 3451 | pci_release_regions(pdev); |
4e570309 BH |
3452 | pci_disable_device(pdev); |
3453 | pci_set_drvdata(pdev, NULL); | |
1da177e4 | 3454 | free_hba(i); |
7c832835 | 3455 | } |
1da177e4 LT |
3456 | |
3457 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
3458 | .name = "cciss", |
3459 | .probe = cciss_init_one, | |
3460 | .remove = __devexit_p(cciss_remove_one), | |
3461 | .id_table = cciss_pci_device_id, /* id_table */ | |
1da177e4 LT |
3462 | }; |
3463 | ||
3464 | /* | |
3465 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 3466 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
3467 | */ |
3468 | static int __init cciss_init(void) | |
3469 | { | |
3470 | printk(KERN_INFO DRIVER_NAME "\n"); | |
3471 | ||
3472 | /* Register for our PCI devices */ | |
9bfab8ce | 3473 | return pci_register_driver(&cciss_pci_driver); |
1da177e4 LT |
3474 | } |
3475 | ||
3476 | static void __exit cciss_cleanup(void) | |
3477 | { | |
3478 | int i; | |
3479 | ||
3480 | pci_unregister_driver(&cciss_pci_driver); | |
3481 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
3482 | for (i = 0; i < MAX_CTLR; i++) { |
3483 | if (hba[i] != NULL) { | |
1da177e4 | 3484 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 3485 | " controller %d\n", i); |
1da177e4 LT |
3486 | cciss_remove_one(hba[i]->pdev); |
3487 | } | |
3488 | } | |
3489 | remove_proc_entry("cciss", proc_root_driver); | |
3490 | } | |
3491 | ||
33079b21 MM |
3492 | static void fail_all_cmds(unsigned long ctlr) |
3493 | { | |
3494 | /* If we get here, the board is apparently dead. */ | |
3495 | ctlr_info_t *h = hba[ctlr]; | |
3496 | CommandList_struct *c; | |
3497 | unsigned long flags; | |
3498 | ||
3499 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); | |
7c832835 | 3500 | h->alive = 0; /* the controller apparently died... */ |
33079b21 MM |
3501 | |
3502 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
3503 | ||
7c832835 | 3504 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
33079b21 MM |
3505 | |
3506 | /* move everything off the request queue onto the completed queue */ | |
7c832835 | 3507 | while ((c = h->reqQ) != NULL) { |
33079b21 MM |
3508 | removeQ(&(h->reqQ), c); |
3509 | h->Qdepth--; | |
7c832835 | 3510 | addQ(&(h->cmpQ), c); |
33079b21 MM |
3511 | } |
3512 | ||
3513 | /* Now, fail everything on the completed queue with a HW error */ | |
7c832835 | 3514 | while ((c = h->cmpQ) != NULL) { |
33079b21 MM |
3515 | removeQ(&h->cmpQ, c); |
3516 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
3517 | if (c->cmd_type == CMD_RWREQ) { | |
3518 | complete_command(h, c, 0); | |
3519 | } else if (c->cmd_type == CMD_IOCTL_PEND) | |
3520 | complete(c->waiting); | |
3521 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
3522 | else if (c->cmd_type == CMD_SCSI) |
3523 | complete_scsi_command(c, 0, 0); | |
33079b21 MM |
3524 | #endif |
3525 | } | |
3526 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
3527 | return; | |
3528 | } | |
3529 | ||
1da177e4 LT |
3530 | module_init(cciss_init); |
3531 | module_exit(cciss_cleanup); |