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Commit | Line | Data |
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1da177e4 | 1 | /* |
bd4f36d6 MM |
2 | * Disk Array driver for HP Smart Array controllers. |
3 | * (C) Copyright 2000, 2007 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 | |
bd4f36d6 | 7 | * the Free Software Foundation; version 2 of the License. |
1da177e4 LT |
8 | * |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
bd4f36d6 MM |
11 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * General Public License for more details. | |
1da177e4 LT |
13 | * |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
bd4f36d6 MM |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
17 | * 02111-1307, USA. | |
1da177e4 LT |
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> | |
89b6e743 | 36 | #include <linux/seq_file.h> |
7c832835 | 37 | #include <linux/init.h> |
1da177e4 LT |
38 | #include <linux/hdreg.h> |
39 | #include <linux/spinlock.h> | |
40 | #include <linux/compat.h> | |
2056a782 | 41 | #include <linux/blktrace_api.h> |
1da177e4 LT |
42 | #include <asm/uaccess.h> |
43 | #include <asm/io.h> | |
44 | ||
eb0df996 | 45 | #include <linux/dma-mapping.h> |
1da177e4 LT |
46 | #include <linux/blkdev.h> |
47 | #include <linux/genhd.h> | |
48 | #include <linux/completion.h> | |
d5d3b736 | 49 | #include <scsi/scsi.h> |
03bbfee5 MMOD |
50 | #include <scsi/sg.h> |
51 | #include <scsi/scsi_ioctl.h> | |
52 | #include <linux/cdrom.h> | |
231bc2a2 | 53 | #include <linux/scatterlist.h> |
1da177e4 LT |
54 | |
55 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) | |
9d827c9e MM |
56 | #define DRIVER_NAME "HP CISS Driver (v 3.6.14)" |
57 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3,6,14) | |
1da177e4 LT |
58 | |
59 | /* Embedded module documentation macros - see modules.h */ | |
60 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
9d827c9e | 61 | MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 3.6.14"); |
1da177e4 | 62 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
1883c5ab | 63 | " SA6i P600 P800 P400 P400i E200 E200i E500"); |
9d827c9e | 64 | MODULE_VERSION("3.6.14"); |
1da177e4 LT |
65 | MODULE_LICENSE("GPL"); |
66 | ||
67 | #include "cciss_cmd.h" | |
68 | #include "cciss.h" | |
69 | #include <linux/cciss_ioctl.h> | |
70 | ||
71 | /* define the PCI info for the cards we can control */ | |
72 | static const struct pci_device_id cciss_pci_device_id[] = { | |
f82ccdb9 BH |
73 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
74 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, | |
75 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, | |
76 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, | |
77 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, | |
78 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, | |
79 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, | |
80 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, | |
81 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, | |
82 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, | |
83 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, | |
84 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, | |
85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, | |
86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, | |
87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, | |
88 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, | |
89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, | |
90 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, | |
de923916 | 91 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, |
9cff3b38 | 92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
4ff9a9a4 MM |
93 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
94 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, | |
1da177e4 LT |
95 | {0,} |
96 | }; | |
7c832835 | 97 | |
1da177e4 LT |
98 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
99 | ||
1da177e4 LT |
100 | /* board_id = Subsystem Device ID & Vendor ID |
101 | * product = Marketing Name for the board | |
7c832835 | 102 | * access = Address of the struct of function pointers |
f880632f | 103 | * nr_cmds = Number of commands supported by controller |
1da177e4 LT |
104 | */ |
105 | static struct board_type products[] = { | |
f880632f MM |
106 | {0x40700E11, "Smart Array 5300", &SA5_access, 512}, |
107 | {0x40800E11, "Smart Array 5i", &SA5B_access, 512}, | |
108 | {0x40820E11, "Smart Array 532", &SA5B_access, 512}, | |
109 | {0x40830E11, "Smart Array 5312", &SA5B_access, 512}, | |
110 | {0x409A0E11, "Smart Array 641", &SA5_access, 512}, | |
111 | {0x409B0E11, "Smart Array 642", &SA5_access, 512}, | |
112 | {0x409C0E11, "Smart Array 6400", &SA5_access, 512}, | |
113 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access, 512}, | |
114 | {0x40910E11, "Smart Array 6i", &SA5_access, 512}, | |
115 | {0x3225103C, "Smart Array P600", &SA5_access, 512}, | |
116 | {0x3223103C, "Smart Array P800", &SA5_access, 512}, | |
117 | {0x3234103C, "Smart Array P400", &SA5_access, 512}, | |
118 | {0x3235103C, "Smart Array P400i", &SA5_access, 512}, | |
119 | {0x3211103C, "Smart Array E200i", &SA5_access, 120}, | |
120 | {0x3212103C, "Smart Array E200", &SA5_access, 120}, | |
121 | {0x3213103C, "Smart Array E200i", &SA5_access, 120}, | |
122 | {0x3214103C, "Smart Array E200i", &SA5_access, 120}, | |
123 | {0x3215103C, "Smart Array E200i", &SA5_access, 120}, | |
de923916 | 124 | {0x3237103C, "Smart Array E500", &SA5_access, 512}, |
9cff3b38 | 125 | {0x323D103C, "Smart Array P700m", &SA5_access, 512}, |
f880632f | 126 | {0xFFFF103C, "Unknown Smart Array", &SA5_access, 120}, |
1da177e4 LT |
127 | }; |
128 | ||
d14c4ab5 | 129 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
7c832835 | 130 | #define MAX_CONFIG_WAIT 30000 |
1da177e4 LT |
131 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
132 | ||
133 | /*define how many times we will try a command because of bus resets */ | |
134 | #define MAX_CMD_RETRIES 3 | |
135 | ||
1da177e4 LT |
136 | #define MAX_CTLR 32 |
137 | ||
138 | /* Originally cciss driver only supports 8 major numbers */ | |
139 | #define MAX_CTLR_ORIG 8 | |
140 | ||
1da177e4 LT |
141 | static ctlr_info_t *hba[MAX_CTLR]; |
142 | ||
165125e1 | 143 | static void do_cciss_request(struct request_queue *q); |
7d12e780 | 144 | static irqreturn_t do_cciss_intr(int irq, void *dev_id); |
1da177e4 LT |
145 | static int cciss_open(struct inode *inode, struct file *filep); |
146 | static int cciss_release(struct inode *inode, struct file *filep); | |
7c832835 BH |
147 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
148 | unsigned int cmd, unsigned long arg); | |
a885c8c4 | 149 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 | 150 | |
1da177e4 | 151 | static int cciss_revalidate(struct gendisk *disk); |
ddd47442 | 152 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk); |
7c832835 BH |
153 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, |
154 | int clear_all); | |
1da177e4 | 155 | |
00988a35 MMOD |
156 | static void cciss_read_capacity(int ctlr, int logvol, int withirq, |
157 | sector_t *total_size, unsigned int *block_size); | |
158 | static void cciss_read_capacity_16(int ctlr, int logvol, int withirq, | |
159 | sector_t *total_size, unsigned int *block_size); | |
160 | static void cciss_geometry_inquiry(int ctlr, int logvol, | |
161 | int withirq, sector_t total_size, | |
162 | unsigned int block_size, InquiryData_struct *inq_buff, | |
7c832835 | 163 | drive_info_struct *drv); |
1da177e4 | 164 | static void cciss_getgeometry(int cntl_num); |
7c832835 BH |
165 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
166 | __u32); | |
167 | static void start_io(ctlr_info_t *h); | |
168 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, | |
169 | unsigned int use_unit_num, unsigned int log_unit, | |
170 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); | |
171 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, | |
172 | unsigned int use_unit_num, unsigned int log_unit, | |
173 | __u8 page_code, int cmd_type); | |
1da177e4 | 174 | |
33079b21 MM |
175 | static void fail_all_cmds(unsigned long ctlr); |
176 | ||
1da177e4 | 177 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
178 | static void cciss_procinit(int i); |
179 | #else | |
7c832835 BH |
180 | static void cciss_procinit(int i) |
181 | { | |
182 | } | |
183 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
184 | |
185 | #ifdef CONFIG_COMPAT | |
186 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg); | |
187 | #endif | |
188 | ||
7c832835 BH |
189 | static struct block_device_operations cciss_fops = { |
190 | .owner = THIS_MODULE, | |
191 | .open = cciss_open, | |
192 | .release = cciss_release, | |
193 | .ioctl = cciss_ioctl, | |
194 | .getgeo = cciss_getgeo, | |
1da177e4 | 195 | #ifdef CONFIG_COMPAT |
7c832835 | 196 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 197 | #endif |
7c832835 | 198 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
199 | }; |
200 | ||
201 | /* | |
202 | * Enqueuing and dequeuing functions for cmdlists. | |
203 | */ | |
204 | static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c) | |
205 | { | |
7c832835 BH |
206 | if (*Qptr == NULL) { |
207 | *Qptr = c; | |
208 | c->next = c->prev = c; | |
209 | } else { | |
210 | c->prev = (*Qptr)->prev; | |
211 | c->next = (*Qptr); | |
212 | (*Qptr)->prev->next = c; | |
213 | (*Qptr)->prev = c; | |
214 | } | |
1da177e4 LT |
215 | } |
216 | ||
7c832835 BH |
217 | static inline CommandList_struct *removeQ(CommandList_struct **Qptr, |
218 | CommandList_struct *c) | |
1da177e4 | 219 | { |
7c832835 BH |
220 | if (c && c->next != c) { |
221 | if (*Qptr == c) | |
222 | *Qptr = c->next; | |
223 | c->prev->next = c->next; | |
224 | c->next->prev = c->prev; | |
225 | } else { | |
226 | *Qptr = NULL; | |
227 | } | |
228 | return c; | |
1da177e4 LT |
229 | } |
230 | ||
231 | #include "cciss_scsi.c" /* For SCSI tape support */ | |
232 | ||
0f5486ec RD |
233 | #define RAID_UNKNOWN 6 |
234 | ||
1da177e4 LT |
235 | #ifdef CONFIG_PROC_FS |
236 | ||
237 | /* | |
238 | * Report information about this controller. | |
239 | */ | |
240 | #define ENG_GIG 1000000000 | |
241 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
89b6e743 | 242 | #define ENGAGE_SCSI "engage scsi" |
7c832835 BH |
243 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
244 | "UNKNOWN" | |
245 | }; | |
1da177e4 LT |
246 | |
247 | static struct proc_dir_entry *proc_cciss; | |
248 | ||
89b6e743 | 249 | static void cciss_seq_show_header(struct seq_file *seq) |
1da177e4 | 250 | { |
89b6e743 MM |
251 | ctlr_info_t *h = seq->private; |
252 | ||
253 | seq_printf(seq, "%s: HP %s Controller\n" | |
254 | "Board ID: 0x%08lx\n" | |
255 | "Firmware Version: %c%c%c%c\n" | |
256 | "IRQ: %d\n" | |
257 | "Logical drives: %d\n" | |
258 | "Current Q depth: %d\n" | |
259 | "Current # commands on controller: %d\n" | |
260 | "Max Q depth since init: %d\n" | |
261 | "Max # commands on controller since init: %d\n" | |
262 | "Max SG entries since init: %d\n", | |
263 | h->devname, | |
264 | h->product_name, | |
265 | (unsigned long)h->board_id, | |
266 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
267 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], | |
268 | h->num_luns, | |
269 | h->Qdepth, h->commands_outstanding, | |
270 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
271 | ||
272 | #ifdef CONFIG_CISS_SCSI_TAPE | |
273 | cciss_seq_tape_report(seq, h->ctlr); | |
274 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
275 | } | |
1da177e4 | 276 | |
89b6e743 MM |
277 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
278 | { | |
279 | ctlr_info_t *h = seq->private; | |
280 | unsigned ctlr = h->ctlr; | |
281 | unsigned long flags; | |
1da177e4 LT |
282 | |
283 | /* prevent displaying bogus info during configuration | |
284 | * or deconfiguration of a logical volume | |
285 | */ | |
286 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
287 | if (h->busy_configuring) { | |
288 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
89b6e743 | 289 | return ERR_PTR(-EBUSY); |
1da177e4 LT |
290 | } |
291 | h->busy_configuring = 1; | |
292 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
293 | ||
89b6e743 MM |
294 | if (*pos == 0) |
295 | cciss_seq_show_header(seq); | |
296 | ||
297 | return pos; | |
298 | } | |
299 | ||
300 | static int cciss_seq_show(struct seq_file *seq, void *v) | |
301 | { | |
302 | sector_t vol_sz, vol_sz_frac; | |
303 | ctlr_info_t *h = seq->private; | |
304 | unsigned ctlr = h->ctlr; | |
305 | loff_t *pos = v; | |
306 | drive_info_struct *drv = &h->drv[*pos]; | |
307 | ||
308 | if (*pos > h->highest_lun) | |
309 | return 0; | |
310 | ||
311 | if (drv->heads == 0) | |
312 | return 0; | |
313 | ||
314 | vol_sz = drv->nr_blocks; | |
315 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
316 | vol_sz_frac *= 100; | |
317 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
318 | ||
319 | if (drv->raid_level > 5) | |
320 | drv->raid_level = RAID_UNKNOWN; | |
321 | seq_printf(seq, "cciss/c%dd%d:" | |
322 | "\t%4u.%02uGB\tRAID %s\n", | |
323 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, | |
324 | raid_label[drv->raid_level]); | |
325 | return 0; | |
326 | } | |
327 | ||
328 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
329 | { | |
330 | ctlr_info_t *h = seq->private; | |
331 | ||
332 | if (*pos > h->highest_lun) | |
333 | return NULL; | |
334 | *pos += 1; | |
335 | ||
336 | return pos; | |
337 | } | |
338 | ||
339 | static void cciss_seq_stop(struct seq_file *seq, void *v) | |
340 | { | |
341 | ctlr_info_t *h = seq->private; | |
342 | ||
343 | /* Only reset h->busy_configuring if we succeeded in setting | |
344 | * it during cciss_seq_start. */ | |
345 | if (v == ERR_PTR(-EBUSY)) | |
346 | return; | |
7c832835 | 347 | |
1da177e4 | 348 | h->busy_configuring = 0; |
1da177e4 LT |
349 | } |
350 | ||
89b6e743 MM |
351 | static struct seq_operations cciss_seq_ops = { |
352 | .start = cciss_seq_start, | |
353 | .show = cciss_seq_show, | |
354 | .next = cciss_seq_next, | |
355 | .stop = cciss_seq_stop, | |
356 | }; | |
357 | ||
358 | static int cciss_seq_open(struct inode *inode, struct file *file) | |
359 | { | |
360 | int ret = seq_open(file, &cciss_seq_ops); | |
361 | struct seq_file *seq = file->private_data; | |
362 | ||
363 | if (!ret) | |
364 | seq->private = PDE(inode)->data; | |
365 | ||
366 | return ret; | |
367 | } | |
368 | ||
369 | static ssize_t | |
370 | cciss_proc_write(struct file *file, const char __user *buf, | |
371 | size_t length, loff_t *ppos) | |
1da177e4 | 372 | { |
89b6e743 MM |
373 | int err; |
374 | char *buffer; | |
375 | ||
376 | #ifndef CONFIG_CISS_SCSI_TAPE | |
377 | return -EINVAL; | |
1da177e4 LT |
378 | #endif |
379 | ||
89b6e743 | 380 | if (!buf || length > PAGE_SIZE - 1) |
7c832835 | 381 | return -EINVAL; |
89b6e743 MM |
382 | |
383 | buffer = (char *)__get_free_page(GFP_KERNEL); | |
384 | if (!buffer) | |
385 | return -ENOMEM; | |
386 | ||
387 | err = -EFAULT; | |
388 | if (copy_from_user(buffer, buf, length)) | |
389 | goto out; | |
390 | buffer[length] = '\0'; | |
391 | ||
392 | #ifdef CONFIG_CISS_SCSI_TAPE | |
393 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { | |
394 | struct seq_file *seq = file->private_data; | |
395 | ctlr_info_t *h = seq->private; | |
396 | int rc; | |
397 | ||
7c832835 BH |
398 | rc = cciss_engage_scsi(h->ctlr); |
399 | if (rc != 0) | |
89b6e743 MM |
400 | err = -rc; |
401 | else | |
402 | err = length; | |
403 | } else | |
404 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
405 | err = -EINVAL; | |
7c832835 BH |
406 | /* might be nice to have "disengage" too, but it's not |
407 | safely possible. (only 1 module use count, lock issues.) */ | |
89b6e743 MM |
408 | |
409 | out: | |
410 | free_page((unsigned long)buffer); | |
411 | return err; | |
1da177e4 LT |
412 | } |
413 | ||
89b6e743 MM |
414 | static struct file_operations cciss_proc_fops = { |
415 | .owner = THIS_MODULE, | |
416 | .open = cciss_seq_open, | |
417 | .read = seq_read, | |
418 | .llseek = seq_lseek, | |
419 | .release = seq_release, | |
420 | .write = cciss_proc_write, | |
421 | }; | |
422 | ||
1da177e4 LT |
423 | static void __devinit cciss_procinit(int i) |
424 | { | |
425 | struct proc_dir_entry *pde; | |
426 | ||
89b6e743 | 427 | if (proc_cciss == NULL) |
7c832835 | 428 | proc_cciss = proc_mkdir("cciss", proc_root_driver); |
89b6e743 MM |
429 | if (!proc_cciss) |
430 | return; | |
431 | pde = proc_create(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP | | |
432 | S_IROTH, proc_cciss, | |
433 | &cciss_proc_fops); | |
434 | if (!pde) | |
435 | return; | |
436 | ||
437 | pde->data = hba[i]; | |
1da177e4 | 438 | } |
7c832835 | 439 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 440 | |
7c832835 BH |
441 | /* |
442 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 443 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
444 | * which ones are free or in use. For operations that can wait for kmalloc |
445 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
446 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
447 | */ | |
448 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
449 | { |
450 | CommandList_struct *c; | |
7c832835 | 451 | int i; |
1da177e4 LT |
452 | u64bit temp64; |
453 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
454 | ||
7c832835 BH |
455 | if (!get_from_pool) { |
456 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
457 | sizeof(CommandList_struct), &cmd_dma_handle); | |
458 | if (c == NULL) | |
459 | return NULL; | |
1da177e4 LT |
460 | memset(c, 0, sizeof(CommandList_struct)); |
461 | ||
33079b21 MM |
462 | c->cmdindex = -1; |
463 | ||
7c832835 BH |
464 | c->err_info = (ErrorInfo_struct *) |
465 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
466 | &err_dma_handle); | |
467 | ||
468 | if (c->err_info == NULL) { | |
469 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
470 | sizeof(CommandList_struct), c, cmd_dma_handle); |
471 | return NULL; | |
472 | } | |
473 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
474 | } else { /* get it out of the controllers pool */ |
475 | ||
476 | do { | |
f880632f MM |
477 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
478 | if (i == h->nr_cmds) | |
7c832835 BH |
479 | return NULL; |
480 | } while (test_and_set_bit | |
481 | (i & (BITS_PER_LONG - 1), | |
482 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
483 | #ifdef CCISS_DEBUG |
484 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
485 | #endif | |
7c832835 | 486 | c = h->cmd_pool + i; |
1da177e4 | 487 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
488 | cmd_dma_handle = h->cmd_pool_dhandle |
489 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
490 | c->err_info = h->errinfo_pool + i; |
491 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
492 | err_dma_handle = h->errinfo_pool_dhandle |
493 | + i * sizeof(ErrorInfo_struct); | |
494 | h->nr_allocs++; | |
33079b21 MM |
495 | |
496 | c->cmdindex = i; | |
7c832835 | 497 | } |
1da177e4 LT |
498 | |
499 | c->busaddr = (__u32) cmd_dma_handle; | |
7c832835 | 500 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
501 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
502 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
503 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 504 | |
7c832835 BH |
505 | c->ctlr = h->ctlr; |
506 | return c; | |
1da177e4 LT |
507 | } |
508 | ||
7c832835 BH |
509 | /* |
510 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
511 | */ |
512 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
513 | { | |
514 | int i; | |
515 | u64bit temp64; | |
516 | ||
7c832835 | 517 | if (!got_from_pool) { |
1da177e4 LT |
518 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
519 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
520 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
521 | c->err_info, (dma_addr_t) temp64.val); | |
522 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
523 | c, (dma_addr_t) c->busaddr); | |
524 | } else { | |
1da177e4 | 525 | i = c - h->cmd_pool; |
7c832835 BH |
526 | clear_bit(i & (BITS_PER_LONG - 1), |
527 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
528 | h->nr_frees++; | |
529 | } | |
1da177e4 LT |
530 | } |
531 | ||
532 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
533 | { | |
7c832835 | 534 | return disk->queue->queuedata; |
1da177e4 LT |
535 | } |
536 | ||
537 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
538 | { | |
539 | return disk->private_data; | |
540 | } | |
541 | ||
542 | /* | |
543 | * Open. Make sure the device is really there. | |
544 | */ | |
545 | static int cciss_open(struct inode *inode, struct file *filep) | |
546 | { | |
547 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
548 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
549 | ||
550 | #ifdef CCISS_DEBUG | |
551 | printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name); | |
7c832835 | 552 | #endif /* CCISS_DEBUG */ |
1da177e4 | 553 | |
ddd47442 MM |
554 | if (host->busy_initializing || drv->busy_configuring) |
555 | return -EBUSY; | |
1da177e4 LT |
556 | /* |
557 | * Root is allowed to open raw volume zero even if it's not configured | |
558 | * so array config can still work. Root is also allowed to open any | |
559 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
560 | * disk information. I don't think I really like this | |
561 | * but I'm already using way to many device nodes to claim another one | |
562 | * for "raw controller". | |
563 | */ | |
7a06f789 | 564 | if (drv->heads == 0) { |
7c832835 | 565 | if (iminor(inode) != 0) { /* not node 0? */ |
1da177e4 LT |
566 | /* if not node 0 make sure it is a partition = 0 */ |
567 | if (iminor(inode) & 0x0f) { | |
7c832835 | 568 | return -ENXIO; |
1da177e4 LT |
569 | /* if it is, make sure we have a LUN ID */ |
570 | } else if (drv->LunID == 0) { | |
571 | return -ENXIO; | |
572 | } | |
573 | } | |
574 | if (!capable(CAP_SYS_ADMIN)) | |
575 | return -EPERM; | |
576 | } | |
577 | drv->usage_count++; | |
578 | host->usage_count++; | |
579 | return 0; | |
580 | } | |
7c832835 | 581 | |
1da177e4 LT |
582 | /* |
583 | * Close. Sync first. | |
584 | */ | |
585 | static int cciss_release(struct inode *inode, struct file *filep) | |
586 | { | |
587 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
588 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
589 | ||
590 | #ifdef CCISS_DEBUG | |
7c832835 BH |
591 | printk(KERN_DEBUG "cciss_release %s\n", |
592 | inode->i_bdev->bd_disk->disk_name); | |
593 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
594 | |
595 | drv->usage_count--; | |
596 | host->usage_count--; | |
597 | return 0; | |
598 | } | |
599 | ||
600 | #ifdef CONFIG_COMPAT | |
601 | ||
602 | static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
603 | { | |
604 | int ret; | |
605 | lock_kernel(); | |
6c648be6 | 606 | ret = cciss_ioctl(f->f_path.dentry->d_inode, f, cmd, arg); |
1da177e4 LT |
607 | unlock_kernel(); |
608 | return ret; | |
609 | } | |
610 | ||
7c832835 BH |
611 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
612 | unsigned long arg); | |
613 | static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, | |
614 | unsigned long arg); | |
1da177e4 LT |
615 | |
616 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
617 | { | |
618 | switch (cmd) { | |
619 | case CCISS_GETPCIINFO: | |
620 | case CCISS_GETINTINFO: | |
621 | case CCISS_SETINTINFO: | |
622 | case CCISS_GETNODENAME: | |
623 | case CCISS_SETNODENAME: | |
624 | case CCISS_GETHEARTBEAT: | |
625 | case CCISS_GETBUSTYPES: | |
626 | case CCISS_GETFIRMVER: | |
627 | case CCISS_GETDRIVVER: | |
628 | case CCISS_REVALIDVOLS: | |
629 | case CCISS_DEREGDISK: | |
630 | case CCISS_REGNEWDISK: | |
631 | case CCISS_REGNEWD: | |
632 | case CCISS_RESCANDISK: | |
633 | case CCISS_GETLUNINFO: | |
634 | return do_ioctl(f, cmd, arg); | |
635 | ||
636 | case CCISS_PASSTHRU32: | |
637 | return cciss_ioctl32_passthru(f, cmd, arg); | |
638 | case CCISS_BIG_PASSTHRU32: | |
639 | return cciss_ioctl32_big_passthru(f, cmd, arg); | |
640 | ||
641 | default: | |
642 | return -ENOIOCTLCMD; | |
643 | } | |
644 | } | |
645 | ||
7c832835 BH |
646 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
647 | unsigned long arg) | |
1da177e4 LT |
648 | { |
649 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 650 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
651 | IOCTL_Command_struct arg64; |
652 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
653 | int err; | |
654 | u32 cp; | |
655 | ||
656 | err = 0; | |
7c832835 BH |
657 | err |= |
658 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
659 | sizeof(arg64.LUN_info)); | |
660 | err |= | |
661 | copy_from_user(&arg64.Request, &arg32->Request, | |
662 | sizeof(arg64.Request)); | |
663 | err |= | |
664 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
665 | sizeof(arg64.error_info)); | |
1da177e4 LT |
666 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
667 | err |= get_user(cp, &arg32->buf); | |
668 | arg64.buf = compat_ptr(cp); | |
669 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
670 | ||
671 | if (err) | |
672 | return -EFAULT; | |
673 | ||
7c832835 | 674 | err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
675 | if (err) |
676 | return err; | |
7c832835 BH |
677 | err |= |
678 | copy_in_user(&arg32->error_info, &p->error_info, | |
679 | sizeof(arg32->error_info)); | |
1da177e4 LT |
680 | if (err) |
681 | return -EFAULT; | |
682 | return err; | |
683 | } | |
684 | ||
7c832835 BH |
685 | static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, |
686 | unsigned long arg) | |
1da177e4 LT |
687 | { |
688 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 689 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 690 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
691 | BIG_IOCTL_Command_struct __user *p = |
692 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
693 | int err; |
694 | u32 cp; | |
695 | ||
696 | err = 0; | |
7c832835 BH |
697 | err |= |
698 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
699 | sizeof(arg64.LUN_info)); | |
700 | err |= | |
701 | copy_from_user(&arg64.Request, &arg32->Request, | |
702 | sizeof(arg64.Request)); | |
703 | err |= | |
704 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
705 | sizeof(arg64.error_info)); | |
1da177e4 LT |
706 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
707 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
708 | err |= get_user(cp, &arg32->buf); | |
709 | arg64.buf = compat_ptr(cp); | |
710 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
711 | ||
712 | if (err) | |
7c832835 | 713 | return -EFAULT; |
1da177e4 | 714 | |
7c832835 | 715 | err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
716 | if (err) |
717 | return err; | |
7c832835 BH |
718 | err |= |
719 | copy_in_user(&arg32->error_info, &p->error_info, | |
720 | sizeof(arg32->error_info)); | |
1da177e4 LT |
721 | if (err) |
722 | return -EFAULT; | |
723 | return err; | |
724 | } | |
725 | #endif | |
a885c8c4 CH |
726 | |
727 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
728 | { | |
729 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
730 | ||
731 | if (!drv->cylinders) | |
732 | return -ENXIO; | |
733 | ||
734 | geo->heads = drv->heads; | |
735 | geo->sectors = drv->sectors; | |
736 | geo->cylinders = drv->cylinders; | |
737 | return 0; | |
738 | } | |
739 | ||
1da177e4 | 740 | /* |
7c832835 | 741 | * ioctl |
1da177e4 | 742 | */ |
7c832835 BH |
743 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
744 | unsigned int cmd, unsigned long arg) | |
1da177e4 LT |
745 | { |
746 | struct block_device *bdev = inode->i_bdev; | |
747 | struct gendisk *disk = bdev->bd_disk; | |
748 | ctlr_info_t *host = get_host(disk); | |
749 | drive_info_struct *drv = get_drv(disk); | |
750 | int ctlr = host->ctlr; | |
751 | void __user *argp = (void __user *)arg; | |
752 | ||
753 | #ifdef CCISS_DEBUG | |
754 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
755 | #endif /* CCISS_DEBUG */ |
756 | ||
757 | switch (cmd) { | |
1da177e4 | 758 | case CCISS_GETPCIINFO: |
7c832835 BH |
759 | { |
760 | cciss_pci_info_struct pciinfo; | |
761 | ||
762 | if (!arg) | |
763 | return -EINVAL; | |
764 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
765 | pciinfo.bus = host->pdev->bus->number; | |
766 | pciinfo.dev_fn = host->pdev->devfn; | |
767 | pciinfo.board_id = host->board_id; | |
768 | if (copy_to_user | |
769 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
770 | return -EFAULT; | |
771 | return 0; | |
772 | } | |
1da177e4 | 773 | case CCISS_GETINTINFO: |
7c832835 BH |
774 | { |
775 | cciss_coalint_struct intinfo; | |
776 | if (!arg) | |
777 | return -EINVAL; | |
778 | intinfo.delay = | |
779 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
780 | intinfo.count = | |
781 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
782 | if (copy_to_user | |
783 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
784 | return -EFAULT; | |
785 | return 0; | |
786 | } | |
1da177e4 | 787 | case CCISS_SETINTINFO: |
1da177e4 | 788 | { |
7c832835 BH |
789 | cciss_coalint_struct intinfo; |
790 | unsigned long flags; | |
791 | int i; | |
792 | ||
793 | if (!arg) | |
794 | return -EINVAL; | |
795 | if (!capable(CAP_SYS_ADMIN)) | |
796 | return -EPERM; | |
797 | if (copy_from_user | |
798 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
799 | return -EFAULT; | |
800 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
801 | { | |
802 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
803 | return -EINVAL; | |
804 | } | |
805 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
806 | /* Update the field, and then ring the doorbell */ | |
807 | writel(intinfo.delay, | |
808 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
809 | writel(intinfo.count, | |
810 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
811 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
812 | ||
813 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
814 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
815 | & CFGTBL_ChangeReq)) | |
816 | break; | |
817 | /* delay and try again */ | |
818 | udelay(1000); | |
819 | } | |
820 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
821 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
822 | return -EAGAIN; | |
823 | return 0; | |
1da177e4 | 824 | } |
1da177e4 | 825 | case CCISS_GETNODENAME: |
7c832835 BH |
826 | { |
827 | NodeName_type NodeName; | |
828 | int i; | |
829 | ||
830 | if (!arg) | |
831 | return -EINVAL; | |
832 | for (i = 0; i < 16; i++) | |
833 | NodeName[i] = | |
834 | readb(&host->cfgtable->ServerName[i]); | |
835 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
836 | return -EFAULT; | |
837 | return 0; | |
838 | } | |
1da177e4 | 839 | case CCISS_SETNODENAME: |
7c832835 BH |
840 | { |
841 | NodeName_type NodeName; | |
842 | unsigned long flags; | |
843 | int i; | |
844 | ||
845 | if (!arg) | |
846 | return -EINVAL; | |
847 | if (!capable(CAP_SYS_ADMIN)) | |
848 | return -EPERM; | |
849 | ||
850 | if (copy_from_user | |
851 | (NodeName, argp, sizeof(NodeName_type))) | |
852 | return -EFAULT; | |
853 | ||
854 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
855 | ||
856 | /* Update the field, and then ring the doorbell */ | |
857 | for (i = 0; i < 16; i++) | |
858 | writeb(NodeName[i], | |
859 | &host->cfgtable->ServerName[i]); | |
860 | ||
861 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
862 | ||
863 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
864 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
865 | & CFGTBL_ChangeReq)) | |
866 | break; | |
867 | /* delay and try again */ | |
868 | udelay(1000); | |
869 | } | |
870 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
871 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
872 | return -EAGAIN; | |
873 | return 0; | |
874 | } | |
1da177e4 LT |
875 | |
876 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
877 | { |
878 | Heartbeat_type heartbeat; | |
879 | ||
880 | if (!arg) | |
881 | return -EINVAL; | |
882 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
883 | if (copy_to_user | |
884 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
885 | return -EFAULT; | |
886 | return 0; | |
887 | } | |
1da177e4 | 888 | case CCISS_GETBUSTYPES: |
7c832835 BH |
889 | { |
890 | BusTypes_type BusTypes; | |
891 | ||
892 | if (!arg) | |
893 | return -EINVAL; | |
894 | BusTypes = readl(&host->cfgtable->BusTypes); | |
895 | if (copy_to_user | |
896 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
897 | return -EFAULT; | |
898 | return 0; | |
899 | } | |
1da177e4 | 900 | case CCISS_GETFIRMVER: |
7c832835 BH |
901 | { |
902 | FirmwareVer_type firmware; | |
1da177e4 | 903 | |
7c832835 BH |
904 | if (!arg) |
905 | return -EINVAL; | |
906 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 907 | |
7c832835 BH |
908 | if (copy_to_user |
909 | (argp, firmware, sizeof(FirmwareVer_type))) | |
910 | return -EFAULT; | |
911 | return 0; | |
912 | } | |
913 | case CCISS_GETDRIVVER: | |
914 | { | |
915 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 916 | |
7c832835 BH |
917 | if (!arg) |
918 | return -EINVAL; | |
1da177e4 | 919 | |
7c832835 BH |
920 | if (copy_to_user |
921 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
922 | return -EFAULT; | |
923 | return 0; | |
924 | } | |
1da177e4 LT |
925 | |
926 | case CCISS_REVALIDVOLS: | |
3833a748 | 927 | return rebuild_lun_table(host, NULL); |
7c832835 BH |
928 | |
929 | case CCISS_GETLUNINFO:{ | |
930 | LogvolInfo_struct luninfo; | |
931 | ||
932 | luninfo.LunID = drv->LunID; | |
933 | luninfo.num_opens = drv->usage_count; | |
934 | luninfo.num_parts = 0; | |
935 | if (copy_to_user(argp, &luninfo, | |
936 | sizeof(LogvolInfo_struct))) | |
937 | return -EFAULT; | |
938 | return 0; | |
939 | } | |
1da177e4 | 940 | case CCISS_DEREGDISK: |
ddd47442 | 941 | return rebuild_lun_table(host, disk); |
1da177e4 LT |
942 | |
943 | case CCISS_REGNEWD: | |
ddd47442 | 944 | return rebuild_lun_table(host, NULL); |
1da177e4 LT |
945 | |
946 | case CCISS_PASSTHRU: | |
1da177e4 | 947 | { |
7c832835 BH |
948 | IOCTL_Command_struct iocommand; |
949 | CommandList_struct *c; | |
950 | char *buff = NULL; | |
951 | u64bit temp64; | |
952 | unsigned long flags; | |
6e9a4738 | 953 | DECLARE_COMPLETION_ONSTACK(wait); |
1da177e4 | 954 | |
7c832835 BH |
955 | if (!arg) |
956 | return -EINVAL; | |
1da177e4 | 957 | |
7c832835 BH |
958 | if (!capable(CAP_SYS_RAWIO)) |
959 | return -EPERM; | |
1da177e4 | 960 | |
7c832835 BH |
961 | if (copy_from_user |
962 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
963 | return -EFAULT; | |
964 | if ((iocommand.buf_size < 1) && | |
965 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
966 | return -EINVAL; | |
967 | } | |
968 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
969 | /* Check kmalloc limits */ | |
970 | if (iocommand.buf_size > 128000) | |
971 | return -EINVAL; | |
972 | #endif | |
973 | if (iocommand.buf_size > 0) { | |
974 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
975 | if (buff == NULL) | |
976 | return -EFAULT; | |
977 | } | |
978 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
979 | /* Copy the data into the buffer we created */ | |
980 | if (copy_from_user | |
981 | (buff, iocommand.buf, iocommand.buf_size)) { | |
982 | kfree(buff); | |
983 | return -EFAULT; | |
984 | } | |
985 | } else { | |
986 | memset(buff, 0, iocommand.buf_size); | |
987 | } | |
988 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
989 | kfree(buff); | |
990 | return -ENOMEM; | |
991 | } | |
992 | // Fill in the command type | |
993 | c->cmd_type = CMD_IOCTL_PEND; | |
994 | // Fill in Command Header | |
995 | c->Header.ReplyQueue = 0; // unused in simple mode | |
996 | if (iocommand.buf_size > 0) // buffer to fill | |
997 | { | |
998 | c->Header.SGList = 1; | |
999 | c->Header.SGTotal = 1; | |
1000 | } else // no buffers to fill | |
1001 | { | |
1002 | c->Header.SGList = 0; | |
1003 | c->Header.SGTotal = 0; | |
1004 | } | |
1005 | c->Header.LUN = iocommand.LUN_info; | |
1006 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag | |
1da177e4 | 1007 | |
7c832835 BH |
1008 | // Fill in Request block |
1009 | c->Request = iocommand.Request; | |
1da177e4 | 1010 | |
7c832835 BH |
1011 | // Fill in the scatter gather information |
1012 | if (iocommand.buf_size > 0) { | |
1013 | temp64.val = pci_map_single(host->pdev, buff, | |
1014 | iocommand.buf_size, | |
1015 | PCI_DMA_BIDIRECTIONAL); | |
1016 | c->SG[0].Addr.lower = temp64.val32.lower; | |
1017 | c->SG[0].Addr.upper = temp64.val32.upper; | |
1018 | c->SG[0].Len = iocommand.buf_size; | |
1019 | c->SG[0].Ext = 0; // we are not chaining | |
1020 | } | |
1021 | c->waiting = &wait; | |
1022 | ||
1023 | /* Put the request on the tail of the request queue */ | |
1024 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1025 | addQ(&host->reqQ, c); | |
1026 | host->Qdepth++; | |
1027 | start_io(host); | |
1028 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1029 | ||
1030 | wait_for_completion(&wait); | |
1031 | ||
1032 | /* unlock the buffers from DMA */ | |
1033 | temp64.val32.lower = c->SG[0].Addr.lower; | |
1034 | temp64.val32.upper = c->SG[0].Addr.upper; | |
1035 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
1036 | iocommand.buf_size, | |
1037 | PCI_DMA_BIDIRECTIONAL); | |
1038 | ||
1039 | /* Copy the error information out */ | |
1040 | iocommand.error_info = *(c->err_info); | |
1041 | if (copy_to_user | |
1042 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
1043 | kfree(buff); | |
1da177e4 LT |
1044 | cmd_free(host, c, 0); |
1045 | return -EFAULT; | |
1046 | } | |
7c832835 BH |
1047 | |
1048 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
1049 | /* Copy the data out of the buffer we created */ | |
1050 | if (copy_to_user | |
1051 | (iocommand.buf, buff, iocommand.buf_size)) { | |
1052 | kfree(buff); | |
1053 | cmd_free(host, c, 0); | |
1054 | return -EFAULT; | |
1055 | } | |
1056 | } | |
1057 | kfree(buff); | |
1058 | cmd_free(host, c, 0); | |
1059 | return 0; | |
1da177e4 | 1060 | } |
7c832835 BH |
1061 | case CCISS_BIG_PASSTHRU:{ |
1062 | BIG_IOCTL_Command_struct *ioc; | |
1063 | CommandList_struct *c; | |
1064 | unsigned char **buff = NULL; | |
1065 | int *buff_size = NULL; | |
1066 | u64bit temp64; | |
1067 | unsigned long flags; | |
1068 | BYTE sg_used = 0; | |
1069 | int status = 0; | |
1070 | int i; | |
6e9a4738 | 1071 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1072 | __u32 left; |
1073 | __u32 sz; | |
1074 | BYTE __user *data_ptr; | |
1075 | ||
1076 | if (!arg) | |
1077 | return -EINVAL; | |
1078 | if (!capable(CAP_SYS_RAWIO)) | |
1079 | return -EPERM; | |
1080 | ioc = (BIG_IOCTL_Command_struct *) | |
1081 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1082 | if (!ioc) { | |
1083 | status = -ENOMEM; | |
1084 | goto cleanup1; | |
1085 | } | |
1086 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1087 | status = -EFAULT; | |
1088 | goto cleanup1; | |
1089 | } | |
1090 | if ((ioc->buf_size < 1) && | |
1091 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1092 | status = -EINVAL; |
1093 | goto cleanup1; | |
7c832835 BH |
1094 | } |
1095 | /* Check kmalloc limits using all SGs */ | |
1096 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1097 | status = -EINVAL; | |
1098 | goto cleanup1; | |
1099 | } | |
1100 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1101 | status = -EINVAL; | |
1102 | goto cleanup1; | |
1103 | } | |
1104 | buff = | |
1105 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1106 | if (!buff) { | |
1da177e4 LT |
1107 | status = -ENOMEM; |
1108 | goto cleanup1; | |
1109 | } | |
5cbded58 | 1110 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
7c832835 BH |
1111 | GFP_KERNEL); |
1112 | if (!buff_size) { | |
1113 | status = -ENOMEM; | |
1114 | goto cleanup1; | |
1115 | } | |
1116 | left = ioc->buf_size; | |
1117 | data_ptr = ioc->buf; | |
1118 | while (left) { | |
1119 | sz = (left > | |
1120 | ioc->malloc_size) ? ioc-> | |
1121 | malloc_size : left; | |
1122 | buff_size[sg_used] = sz; | |
1123 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1124 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1125 | status = -ENOMEM; |
15534d38 JA |
1126 | goto cleanup1; |
1127 | } | |
7c832835 BH |
1128 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1129 | if (copy_from_user | |
1130 | (buff[sg_used], data_ptr, sz)) { | |
1131 | status = -ENOMEM; | |
1132 | goto cleanup1; | |
1133 | } | |
1134 | } else { | |
1135 | memset(buff[sg_used], 0, sz); | |
1136 | } | |
1137 | left -= sz; | |
1138 | data_ptr += sz; | |
1139 | sg_used++; | |
1140 | } | |
1141 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1142 | status = -ENOMEM; | |
1143 | goto cleanup1; | |
1144 | } | |
1145 | c->cmd_type = CMD_IOCTL_PEND; | |
1146 | c->Header.ReplyQueue = 0; | |
1147 | ||
1148 | if (ioc->buf_size > 0) { | |
1149 | c->Header.SGList = sg_used; | |
1150 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1151 | } else { |
7c832835 BH |
1152 | c->Header.SGList = 0; |
1153 | c->Header.SGTotal = 0; | |
1da177e4 | 1154 | } |
7c832835 BH |
1155 | c->Header.LUN = ioc->LUN_info; |
1156 | c->Header.Tag.lower = c->busaddr; | |
1157 | ||
1158 | c->Request = ioc->Request; | |
1159 | if (ioc->buf_size > 0) { | |
1160 | int i; | |
1161 | for (i = 0; i < sg_used; i++) { | |
1162 | temp64.val = | |
1163 | pci_map_single(host->pdev, buff[i], | |
1164 | buff_size[i], | |
1165 | PCI_DMA_BIDIRECTIONAL); | |
1166 | c->SG[i].Addr.lower = | |
1167 | temp64.val32.lower; | |
1168 | c->SG[i].Addr.upper = | |
1169 | temp64.val32.upper; | |
1170 | c->SG[i].Len = buff_size[i]; | |
1171 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1172 | } | |
1173 | } | |
1174 | c->waiting = &wait; | |
1175 | /* Put the request on the tail of the request queue */ | |
1176 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1177 | addQ(&host->reqQ, c); | |
1178 | host->Qdepth++; | |
1179 | start_io(host); | |
1180 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1181 | wait_for_completion(&wait); | |
1182 | /* unlock the buffers from DMA */ | |
1183 | for (i = 0; i < sg_used; i++) { | |
1184 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1185 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1186 | pci_unmap_single(host->pdev, | |
1187 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1188 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1189 | } |
7c832835 BH |
1190 | /* Copy the error information out */ |
1191 | ioc->error_info = *(c->err_info); | |
1192 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1193 | cmd_free(host, c, 0); | |
1194 | status = -EFAULT; | |
1195 | goto cleanup1; | |
1196 | } | |
1197 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1198 | /* Copy the data out of the buffer we created */ | |
1199 | BYTE __user *ptr = ioc->buf; | |
1200 | for (i = 0; i < sg_used; i++) { | |
1201 | if (copy_to_user | |
1202 | (ptr, buff[i], buff_size[i])) { | |
1203 | cmd_free(host, c, 0); | |
1204 | status = -EFAULT; | |
1205 | goto cleanup1; | |
1206 | } | |
1207 | ptr += buff_size[i]; | |
1da177e4 | 1208 | } |
1da177e4 | 1209 | } |
7c832835 BH |
1210 | cmd_free(host, c, 0); |
1211 | status = 0; | |
1212 | cleanup1: | |
1213 | if (buff) { | |
1214 | for (i = 0; i < sg_used; i++) | |
1215 | kfree(buff[i]); | |
1216 | kfree(buff); | |
1217 | } | |
1218 | kfree(buff_size); | |
1219 | kfree(ioc); | |
1220 | return status; | |
1da177e4 | 1221 | } |
03bbfee5 MMOD |
1222 | |
1223 | /* scsi_cmd_ioctl handles these, below, though some are not */ | |
1224 | /* very meaningful for cciss. SG_IO is the main one people want. */ | |
1225 | ||
1226 | case SG_GET_VERSION_NUM: | |
1227 | case SG_SET_TIMEOUT: | |
1228 | case SG_GET_TIMEOUT: | |
1229 | case SG_GET_RESERVED_SIZE: | |
1230 | case SG_SET_RESERVED_SIZE: | |
1231 | case SG_EMULATED_HOST: | |
1232 | case SG_IO: | |
1233 | case SCSI_IOCTL_SEND_COMMAND: | |
9793c326 | 1234 | return scsi_cmd_ioctl(filep, disk->queue, disk, cmd, argp); |
03bbfee5 MMOD |
1235 | |
1236 | /* scsi_cmd_ioctl would normally handle these, below, but */ | |
1237 | /* they aren't a good fit for cciss, as CD-ROMs are */ | |
1238 | /* not supported, and we don't have any bus/target/lun */ | |
1239 | /* which we present to the kernel. */ | |
1240 | ||
1241 | case CDROM_SEND_PACKET: | |
1242 | case CDROMCLOSETRAY: | |
1243 | case CDROMEJECT: | |
1244 | case SCSI_IOCTL_GET_IDLUN: | |
1245 | case SCSI_IOCTL_GET_BUS_NUMBER: | |
1da177e4 LT |
1246 | default: |
1247 | return -ENOTTY; | |
1248 | } | |
1da177e4 LT |
1249 | } |
1250 | ||
7b30f092 JA |
1251 | static void cciss_check_queues(ctlr_info_t *h) |
1252 | { | |
1253 | int start_queue = h->next_to_run; | |
1254 | int i; | |
1255 | ||
1256 | /* check to see if we have maxed out the number of commands that can | |
1257 | * be placed on the queue. If so then exit. We do this check here | |
1258 | * in case the interrupt we serviced was from an ioctl and did not | |
1259 | * free any new commands. | |
1260 | */ | |
f880632f | 1261 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1262 | return; |
1263 | ||
1264 | /* We have room on the queue for more commands. Now we need to queue | |
1265 | * them up. We will also keep track of the next queue to run so | |
1266 | * that every queue gets a chance to be started first. | |
1267 | */ | |
1268 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1269 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1270 | /* make sure the disk has been added and the drive is real | |
1271 | * because this can be called from the middle of init_one. | |
1272 | */ | |
1273 | if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads)) | |
1274 | continue; | |
1275 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1276 | ||
1277 | /* check to see if we have maxed out the number of commands | |
1278 | * that can be placed on the queue. | |
1279 | */ | |
f880632f | 1280 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1281 | if (curr_queue == start_queue) { |
1282 | h->next_to_run = | |
1283 | (start_queue + 1) % (h->highest_lun + 1); | |
1284 | break; | |
1285 | } else { | |
1286 | h->next_to_run = curr_queue; | |
1287 | break; | |
1288 | } | |
1289 | } else { | |
1290 | curr_queue = (curr_queue + 1) % (h->highest_lun + 1); | |
1291 | } | |
1292 | } | |
1293 | } | |
1294 | ||
ca1e0484 MM |
1295 | static void cciss_softirq_done(struct request *rq) |
1296 | { | |
1297 | CommandList_struct *cmd = rq->completion_data; | |
1298 | ctlr_info_t *h = hba[cmd->ctlr]; | |
1299 | unsigned long flags; | |
1300 | u64bit temp64; | |
1301 | int i, ddir; | |
1302 | ||
1303 | if (cmd->Request.Type.Direction == XFER_READ) | |
1304 | ddir = PCI_DMA_FROMDEVICE; | |
1305 | else | |
1306 | ddir = PCI_DMA_TODEVICE; | |
1307 | ||
1308 | /* command did not need to be retried */ | |
1309 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1310 | for (i = 0; i < cmd->Header.SGList; i++) { |
ca1e0484 MM |
1311 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
1312 | temp64.val32.upper = cmd->SG[i].Addr.upper; | |
1313 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); | |
1314 | } | |
1315 | ||
ca1e0484 MM |
1316 | #ifdef CCISS_DEBUG |
1317 | printk("Done with %p\n", rq); | |
7c832835 | 1318 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1319 | |
3daeea29 KU |
1320 | if (blk_end_request(rq, (rq->errors == 0) ? 0 : -EIO, blk_rq_bytes(rq))) |
1321 | BUG(); | |
1322 | ||
ca1e0484 | 1323 | spin_lock_irqsave(&h->lock, flags); |
7c832835 | 1324 | cmd_free(h, cmd, 1); |
7b30f092 | 1325 | cciss_check_queues(h); |
ca1e0484 MM |
1326 | spin_unlock_irqrestore(&h->lock, flags); |
1327 | } | |
1328 | ||
ddd47442 MM |
1329 | /* This function will check the usage_count of the drive to be updated/added. |
1330 | * If the usage_count is zero then the drive information will be updated and | |
1331 | * the disk will be re-registered with the kernel. If not then it will be | |
1332 | * left alone for the next reboot. The exception to this is disk 0 which | |
1333 | * will always be left registered with the kernel since it is also the | |
1334 | * controller node. Any changes to disk 0 will show up on the next | |
1335 | * reboot. | |
7c832835 | 1336 | */ |
ddd47442 | 1337 | static void cciss_update_drive_info(int ctlr, int drv_index) |
7c832835 | 1338 | { |
ddd47442 MM |
1339 | ctlr_info_t *h = hba[ctlr]; |
1340 | struct gendisk *disk; | |
ddd47442 MM |
1341 | InquiryData_struct *inq_buff = NULL; |
1342 | unsigned int block_size; | |
00988a35 | 1343 | sector_t total_size; |
ddd47442 MM |
1344 | unsigned long flags = 0; |
1345 | int ret = 0; | |
1346 | ||
7c832835 BH |
1347 | /* if the disk already exists then deregister it before proceeding */ |
1348 | if (h->drv[drv_index].raid_level != -1) { | |
ddd47442 MM |
1349 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
1350 | h->drv[drv_index].busy_configuring = 1; | |
1351 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
e14ac670 | 1352 | |
1353 | /* deregister_disk sets h->drv[drv_index].queue = NULL */ | |
1354 | /* which keeps the interrupt handler from starting */ | |
1355 | /* the queue. */ | |
ddd47442 | 1356 | ret = deregister_disk(h->gendisk[drv_index], |
7c832835 | 1357 | &h->drv[drv_index], 0); |
ddd47442 MM |
1358 | h->drv[drv_index].busy_configuring = 0; |
1359 | } | |
1360 | ||
1361 | /* If the disk is in use return */ | |
1362 | if (ret) | |
1363 | return; | |
1364 | ||
d14c4ab5 | 1365 | /* Get information about the disk and modify the driver structure */ |
7c832835 | 1366 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
ddd47442 MM |
1367 | if (inq_buff == NULL) |
1368 | goto mem_msg; | |
1369 | ||
97c06978 MMOD |
1370 | /* testing to see if 16-byte CDBs are already being used */ |
1371 | if (h->cciss_read == CCISS_READ_16) { | |
1372 | cciss_read_capacity_16(h->ctlr, drv_index, 1, | |
1373 | &total_size, &block_size); | |
1374 | goto geo_inq; | |
1375 | } | |
1376 | ||
00988a35 | 1377 | cciss_read_capacity(ctlr, drv_index, 1, |
7c832835 | 1378 | &total_size, &block_size); |
00988a35 | 1379 | |
97c06978 MMOD |
1380 | /* if read_capacity returns all F's this volume is >2TB in size */ |
1381 | /* so we switch to 16-byte CDB's for all read/write ops */ | |
1382 | if (total_size == 0xFFFFFFFFULL) { | |
00988a35 MMOD |
1383 | cciss_read_capacity_16(ctlr, drv_index, 1, |
1384 | &total_size, &block_size); | |
1385 | h->cciss_read = CCISS_READ_16; | |
1386 | h->cciss_write = CCISS_WRITE_16; | |
1387 | } else { | |
1388 | h->cciss_read = CCISS_READ_10; | |
1389 | h->cciss_write = CCISS_WRITE_10; | |
1390 | } | |
97c06978 | 1391 | geo_inq: |
ddd47442 | 1392 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, |
7c832835 | 1393 | inq_buff, &h->drv[drv_index]); |
ddd47442 MM |
1394 | |
1395 | ++h->num_luns; | |
1396 | disk = h->gendisk[drv_index]; | |
1397 | set_capacity(disk, h->drv[drv_index].nr_blocks); | |
1398 | ||
ddd47442 | 1399 | /* if it's the controller it's already added */ |
7c832835 | 1400 | if (drv_index) { |
ddd47442 | 1401 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
799202cb MM |
1402 | sprintf(disk->disk_name, "cciss/c%dd%d", ctlr, drv_index); |
1403 | disk->major = h->major; | |
1404 | disk->first_minor = drv_index << NWD_SHIFT; | |
1405 | disk->fops = &cciss_fops; | |
1406 | disk->private_data = &h->drv[drv_index]; | |
ddd47442 MM |
1407 | |
1408 | /* Set up queue information */ | |
ddd47442 MM |
1409 | blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask); |
1410 | ||
1411 | /* This is a hardware imposed limit. */ | |
1412 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); | |
1413 | ||
1414 | /* This is a limit in the driver and could be eliminated. */ | |
1415 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); | |
1416 | ||
92c4231a | 1417 | blk_queue_max_sectors(disk->queue, h->cciss_max_sectors); |
ddd47442 | 1418 | |
ca1e0484 MM |
1419 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
1420 | ||
ddd47442 MM |
1421 | disk->queue->queuedata = hba[ctlr]; |
1422 | ||
1423 | blk_queue_hardsect_size(disk->queue, | |
7c832835 | 1424 | hba[ctlr]->drv[drv_index].block_size); |
ddd47442 | 1425 | |
e14ac670 | 1426 | /* Make sure all queue data is written out before */ |
1427 | /* setting h->drv[drv_index].queue, as setting this */ | |
1428 | /* allows the interrupt handler to start the queue */ | |
1429 | wmb(); | |
ddd47442 MM |
1430 | h->drv[drv_index].queue = disk->queue; |
1431 | add_disk(disk); | |
1432 | } | |
1433 | ||
7c832835 | 1434 | freeret: |
ddd47442 MM |
1435 | kfree(inq_buff); |
1436 | return; | |
7c832835 | 1437 | mem_msg: |
ddd47442 MM |
1438 | printk(KERN_ERR "cciss: out of memory\n"); |
1439 | goto freeret; | |
1440 | } | |
1441 | ||
1442 | /* This function will find the first index of the controllers drive array | |
1443 | * that has a -1 for the raid_level and will return that index. This is | |
1444 | * where new drives will be added. If the index to be returned is greater | |
1445 | * than the highest_lun index for the controller then highest_lun is set | |
1446 | * to this new index. If there are no available indexes then -1 is returned. | |
7c832835 | 1447 | */ |
ddd47442 MM |
1448 | static int cciss_find_free_drive_index(int ctlr) |
1449 | { | |
1450 | int i; | |
1451 | ||
7c832835 BH |
1452 | for (i = 0; i < CISS_MAX_LUN; i++) { |
1453 | if (hba[ctlr]->drv[i].raid_level == -1) { | |
ddd47442 MM |
1454 | if (i > hba[ctlr]->highest_lun) |
1455 | hba[ctlr]->highest_lun = i; | |
1456 | return i; | |
1457 | } | |
1458 | } | |
1459 | return -1; | |
1460 | } | |
1461 | ||
1462 | /* This function will add and remove logical drives from the Logical | |
d14c4ab5 | 1463 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
1464 | * so that mount points are preserved until the next reboot. This allows |
1465 | * for the removal of logical drives in the middle of the drive array | |
1466 | * without a re-ordering of those drives. | |
1467 | * INPUT | |
1468 | * h = The controller to perform the operations on | |
1469 | * del_disk = The disk to remove if specified. If the value given | |
1470 | * is NULL then no disk is removed. | |
7c832835 | 1471 | */ |
ddd47442 | 1472 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk) |
1da177e4 | 1473 | { |
ddd47442 MM |
1474 | int ctlr = h->ctlr; |
1475 | int num_luns; | |
1476 | ReportLunData_struct *ld_buff = NULL; | |
1477 | drive_info_struct *drv = NULL; | |
1478 | int return_code; | |
1479 | int listlength = 0; | |
1480 | int i; | |
1481 | int drv_found; | |
1482 | int drv_index = 0; | |
1483 | __u32 lunid = 0; | |
1da177e4 | 1484 | unsigned long flags; |
ddd47442 MM |
1485 | |
1486 | /* Set busy_configuring flag for this operation */ | |
1487 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 1488 | if (h->busy_configuring) { |
ddd47442 MM |
1489 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
1490 | return -EBUSY; | |
1491 | } | |
1492 | h->busy_configuring = 1; | |
1493 | ||
1494 | /* if del_disk is NULL then we are being called to add a new disk | |
1495 | * and update the logical drive table. If it is not NULL then | |
1496 | * we will check if the disk is in use or not. | |
1497 | */ | |
7c832835 | 1498 | if (del_disk != NULL) { |
ddd47442 MM |
1499 | drv = get_drv(del_disk); |
1500 | drv->busy_configuring = 1; | |
1501 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1502 | return_code = deregister_disk(del_disk, drv, 1); | |
1503 | drv->busy_configuring = 0; | |
1504 | h->busy_configuring = 0; | |
1505 | return return_code; | |
1506 | } else { | |
1507 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1508 | if (!capable(CAP_SYS_RAWIO)) | |
1509 | return -EPERM; | |
1510 | ||
1511 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); | |
1512 | if (ld_buff == NULL) | |
1513 | goto mem_msg; | |
1514 | ||
1515 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
7c832835 BH |
1516 | sizeof(ReportLunData_struct), 0, |
1517 | 0, 0, TYPE_CMD); | |
1518 | ||
1519 | if (return_code == IO_OK) { | |
799202cb | 1520 | listlength = |
4c1f2b31 | 1521 | be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); |
7c832835 | 1522 | } else { /* reading number of logical volumes failed */ |
ddd47442 | 1523 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 1524 | " command failed\n"); |
ddd47442 MM |
1525 | listlength = 0; |
1526 | goto freeret; | |
1527 | } | |
1528 | ||
1529 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
7c832835 | 1530 | if (num_luns > CISS_MAX_LUN) { |
ddd47442 MM |
1531 | num_luns = CISS_MAX_LUN; |
1532 | printk(KERN_WARNING "cciss: more luns configured" | |
7c832835 BH |
1533 | " on controller than can be handled by" |
1534 | " this driver.\n"); | |
ddd47442 MM |
1535 | } |
1536 | ||
1537 | /* Compare controller drive array to drivers drive array. | |
7c832835 BH |
1538 | * Check for updates in the drive information and any new drives |
1539 | * on the controller. | |
1540 | */ | |
1541 | for (i = 0; i < num_luns; i++) { | |
ddd47442 MM |
1542 | int j; |
1543 | ||
1544 | drv_found = 0; | |
1545 | ||
7c832835 BH |
1546 | lunid = (0xff & |
1547 | (unsigned int)(ld_buff->LUN[i][3])) << 24; | |
1548 | lunid |= (0xff & | |
1549 | (unsigned int)(ld_buff->LUN[i][2])) << 16; | |
1550 | lunid |= (0xff & | |
1551 | (unsigned int)(ld_buff->LUN[i][1])) << 8; | |
1552 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
ddd47442 MM |
1553 | |
1554 | /* Find if the LUN is already in the drive array | |
1555 | * of the controller. If so then update its info | |
1556 | * if not is use. If it does not exist then find | |
1557 | * the first free index and add it. | |
7c832835 BH |
1558 | */ |
1559 | for (j = 0; j <= h->highest_lun; j++) { | |
1560 | if (h->drv[j].LunID == lunid) { | |
ddd47442 MM |
1561 | drv_index = j; |
1562 | drv_found = 1; | |
1563 | } | |
1564 | } | |
1565 | ||
1566 | /* check if the drive was found already in the array */ | |
7c832835 | 1567 | if (!drv_found) { |
ddd47442 MM |
1568 | drv_index = cciss_find_free_drive_index(ctlr); |
1569 | if (drv_index == -1) | |
1570 | goto freeret; | |
1571 | ||
799202cb MM |
1572 | /*Check if the gendisk needs to be allocated */ |
1573 | if (!h->gendisk[drv_index]){ | |
1574 | h->gendisk[drv_index] = alloc_disk(1 << NWD_SHIFT); | |
1575 | if (!h->gendisk[drv_index]){ | |
1576 | printk(KERN_ERR "cciss: could not allocate new disk %d\n", drv_index); | |
1577 | goto mem_msg; | |
1578 | } | |
1579 | } | |
ddd47442 MM |
1580 | } |
1581 | h->drv[drv_index].LunID = lunid; | |
1582 | cciss_update_drive_info(ctlr, drv_index); | |
7c832835 BH |
1583 | } /* end for */ |
1584 | } /* end else */ | |
ddd47442 | 1585 | |
7c832835 | 1586 | freeret: |
ddd47442 MM |
1587 | kfree(ld_buff); |
1588 | h->busy_configuring = 0; | |
1589 | /* We return -1 here to tell the ACU that we have registered/updated | |
1590 | * all of the drives that we can and to keep it from calling us | |
1591 | * additional times. | |
7c832835 | 1592 | */ |
ddd47442 | 1593 | return -1; |
7c832835 | 1594 | mem_msg: |
ddd47442 MM |
1595 | printk(KERN_ERR "cciss: out of memory\n"); |
1596 | goto freeret; | |
1597 | } | |
1598 | ||
1599 | /* This function will deregister the disk and it's queue from the | |
1600 | * kernel. It must be called with the controller lock held and the | |
1601 | * drv structures busy_configuring flag set. It's parameters are: | |
1602 | * | |
1603 | * disk = This is the disk to be deregistered | |
1604 | * drv = This is the drive_info_struct associated with the disk to be | |
1605 | * deregistered. It contains information about the disk used | |
1606 | * by the driver. | |
1607 | * clear_all = This flag determines whether or not the disk information | |
1608 | * is going to be completely cleared out and the highest_lun | |
1609 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 1610 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
1611 | * the highest_lun should be left unchanged and the LunID |
1612 | * should not be cleared. | |
1613 | */ | |
1614 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, | |
1615 | int clear_all) | |
1616 | { | |
799202cb | 1617 | int i; |
1da177e4 | 1618 | ctlr_info_t *h = get_host(disk); |
1da177e4 LT |
1619 | |
1620 | if (!capable(CAP_SYS_RAWIO)) | |
1621 | return -EPERM; | |
1622 | ||
1da177e4 | 1623 | /* make sure logical volume is NOT is use */ |
7c832835 BH |
1624 | if (clear_all || (h->gendisk[0] == disk)) { |
1625 | if (drv->usage_count > 1) | |
1626 | return -EBUSY; | |
1627 | } else if (drv->usage_count > 0) | |
1628 | return -EBUSY; | |
1da177e4 | 1629 | |
ddd47442 MM |
1630 | /* invalidate the devices and deregister the disk. If it is disk |
1631 | * zero do not deregister it but just zero out it's values. This | |
1632 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
1633 | */ |
1634 | if (h->gendisk[0] != disk) { | |
5a9df732 AB |
1635 | struct request_queue *q = disk->queue; |
1636 | if (disk->flags & GENHD_FL_UP) | |
1637 | del_gendisk(disk); | |
1638 | if (q) { | |
1639 | blk_cleanup_queue(q); | |
1640 | /* Set drv->queue to NULL so that we do not try | |
1641 | * to call blk_start_queue on this queue in the | |
1642 | * interrupt handler | |
1643 | */ | |
1644 | drv->queue = NULL; | |
1645 | } | |
1646 | /* If clear_all is set then we are deleting the logical | |
1647 | * drive, not just refreshing its info. For drives | |
1648 | * other than disk 0 we will call put_disk. We do not | |
1649 | * do this for disk 0 as we need it to be able to | |
1650 | * configure the controller. | |
1651 | */ | |
1652 | if (clear_all){ | |
1653 | /* This isn't pretty, but we need to find the | |
1654 | * disk in our array and NULL our the pointer. | |
1655 | * This is so that we will call alloc_disk if | |
1656 | * this index is used again later. | |
799202cb | 1657 | */ |
5a9df732 AB |
1658 | for (i=0; i < CISS_MAX_LUN; i++){ |
1659 | if(h->gendisk[i] == disk){ | |
1660 | h->gendisk[i] = NULL; | |
1661 | break; | |
799202cb | 1662 | } |
799202cb | 1663 | } |
5a9df732 | 1664 | put_disk(disk); |
ddd47442 | 1665 | } |
799202cb MM |
1666 | } else { |
1667 | set_capacity(disk, 0); | |
ddd47442 MM |
1668 | } |
1669 | ||
1670 | --h->num_luns; | |
1671 | /* zero out the disk size info */ | |
1672 | drv->nr_blocks = 0; | |
1673 | drv->block_size = 0; | |
1674 | drv->heads = 0; | |
1675 | drv->sectors = 0; | |
1676 | drv->cylinders = 0; | |
1677 | drv->raid_level = -1; /* This can be used as a flag variable to | |
1678 | * indicate that this element of the drive | |
1679 | * array is free. | |
7c832835 BH |
1680 | */ |
1681 | ||
1682 | if (clear_all) { | |
1683 | /* check to see if it was the last disk */ | |
1684 | if (drv == h->drv + h->highest_lun) { | |
1685 | /* if so, find the new hightest lun */ | |
1686 | int i, newhighest = -1; | |
1687 | for (i = 0; i < h->highest_lun; i++) { | |
1688 | /* if the disk has size > 0, it is available */ | |
ddd47442 | 1689 | if (h->drv[i].heads) |
7c832835 BH |
1690 | newhighest = i; |
1691 | } | |
1692 | h->highest_lun = newhighest; | |
1da177e4 | 1693 | } |
ddd47442 | 1694 | |
7c832835 | 1695 | drv->LunID = 0; |
ddd47442 | 1696 | } |
e2019b58 | 1697 | return 0; |
1da177e4 | 1698 | } |
ddd47442 | 1699 | |
7c832835 BH |
1700 | 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, |
1701 | 1: address logical volume log_unit, | |
1702 | 2: periph device address is scsi3addr */ | |
1703 | unsigned int log_unit, __u8 page_code, | |
1704 | unsigned char *scsi3addr, int cmd_type) | |
1da177e4 | 1705 | { |
7c832835 | 1706 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
1707 | u64bit buff_dma_handle; |
1708 | int status = IO_OK; | |
1709 | ||
1710 | c->cmd_type = CMD_IOCTL_PEND; | |
1711 | c->Header.ReplyQueue = 0; | |
7c832835 | 1712 | if (buff != NULL) { |
1da177e4 | 1713 | c->Header.SGList = 1; |
7c832835 | 1714 | c->Header.SGTotal = 1; |
1da177e4 LT |
1715 | } else { |
1716 | c->Header.SGList = 0; | |
7c832835 | 1717 | c->Header.SGTotal = 0; |
1da177e4 LT |
1718 | } |
1719 | c->Header.Tag.lower = c->busaddr; | |
1720 | ||
1721 | c->Request.Type.Type = cmd_type; | |
1722 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
1723 | switch (cmd) { |
1724 | case CISS_INQUIRY: | |
1da177e4 | 1725 | /* If the logical unit number is 0 then, this is going |
7c832835 BH |
1726 | to controller so It's a physical command |
1727 | mode = 0 target = 0. So we have nothing to write. | |
1728 | otherwise, if use_unit_num == 1, | |
1729 | mode = 1(volume set addressing) target = LUNID | |
1730 | otherwise, if use_unit_num == 2, | |
1731 | mode = 0(periph dev addr) target = scsi3addr */ | |
1da177e4 | 1732 | if (use_unit_num == 1) { |
7c832835 BH |
1733 | c->Header.LUN.LogDev.VolId = |
1734 | h->drv[log_unit].LunID; | |
1735 | c->Header.LUN.LogDev.Mode = 1; | |
1da177e4 | 1736 | } else if (use_unit_num == 2) { |
7c832835 BH |
1737 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, |
1738 | 8); | |
1da177e4 LT |
1739 | c->Header.LUN.LogDev.Mode = 0; |
1740 | } | |
1741 | /* are we trying to read a vital product page */ | |
7c832835 | 1742 | if (page_code != 0) { |
1da177e4 LT |
1743 | c->Request.CDB[1] = 0x01; |
1744 | c->Request.CDB[2] = page_code; | |
1745 | } | |
1746 | c->Request.CDBLen = 6; | |
7c832835 | 1747 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
1748 | c->Request.Type.Direction = XFER_READ; |
1749 | c->Request.Timeout = 0; | |
7c832835 BH |
1750 | c->Request.CDB[0] = CISS_INQUIRY; |
1751 | c->Request.CDB[4] = size & 0xFF; | |
1752 | break; | |
1da177e4 LT |
1753 | case CISS_REPORT_LOG: |
1754 | case CISS_REPORT_PHYS: | |
7c832835 | 1755 | /* Talking to controller so It's a physical command |
1da177e4 | 1756 | mode = 00 target = 0. Nothing to write. |
7c832835 | 1757 | */ |
1da177e4 LT |
1758 | c->Request.CDBLen = 12; |
1759 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1760 | c->Request.Type.Direction = XFER_READ; | |
1761 | c->Request.Timeout = 0; | |
1762 | c->Request.CDB[0] = cmd; | |
7c832835 | 1763 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
1da177e4 LT |
1764 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
1765 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
1766 | c->Request.CDB[9] = size & 0xFF; | |
1767 | break; | |
1768 | ||
1769 | case CCISS_READ_CAPACITY: | |
1770 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1771 | c->Header.LUN.LogDev.Mode = 1; | |
1772 | c->Request.CDBLen = 10; | |
1773 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1774 | c->Request.Type.Direction = XFER_READ; | |
1775 | c->Request.Timeout = 0; | |
1776 | c->Request.CDB[0] = cmd; | |
7c832835 | 1777 | break; |
00988a35 MMOD |
1778 | case CCISS_READ_CAPACITY_16: |
1779 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1780 | c->Header.LUN.LogDev.Mode = 1; | |
1781 | c->Request.CDBLen = 16; | |
1782 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1783 | c->Request.Type.Direction = XFER_READ; | |
1784 | c->Request.Timeout = 0; | |
1785 | c->Request.CDB[0] = cmd; | |
1786 | c->Request.CDB[1] = 0x10; | |
1787 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
1788 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
1789 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
1790 | c->Request.CDB[13] = size & 0xFF; | |
1791 | c->Request.Timeout = 0; | |
1792 | c->Request.CDB[0] = cmd; | |
1793 | break; | |
1da177e4 LT |
1794 | case CCISS_CACHE_FLUSH: |
1795 | c->Request.CDBLen = 12; | |
1796 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1797 | c->Request.Type.Direction = XFER_WRITE; | |
1798 | c->Request.Timeout = 0; | |
1799 | c->Request.CDB[0] = BMIC_WRITE; | |
1800 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 1801 | break; |
1da177e4 LT |
1802 | default: |
1803 | printk(KERN_WARNING | |
7c832835 | 1804 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 1805 | return IO_ERROR; |
1da177e4 LT |
1806 | } |
1807 | } else if (cmd_type == TYPE_MSG) { | |
1808 | switch (cmd) { | |
7c832835 | 1809 | case 0: /* ABORT message */ |
3da8b713 | 1810 | c->Request.CDBLen = 12; |
1811 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1812 | c->Request.Type.Direction = XFER_WRITE; | |
1813 | c->Request.Timeout = 0; | |
7c832835 BH |
1814 | c->Request.CDB[0] = cmd; /* abort */ |
1815 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 1816 | /* buff contains the tag of the command to abort */ |
1817 | memcpy(&c->Request.CDB[4], buff, 8); | |
1818 | break; | |
7c832835 | 1819 | case 1: /* RESET message */ |
3da8b713 | 1820 | c->Request.CDBLen = 12; |
1821 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1822 | c->Request.Type.Direction = XFER_WRITE; | |
1823 | c->Request.Timeout = 0; | |
1824 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 BH |
1825 | c->Request.CDB[0] = cmd; /* reset */ |
1826 | c->Request.CDB[1] = 0x04; /* reset a LUN */ | |
00988a35 | 1827 | break; |
1da177e4 LT |
1828 | case 3: /* No-Op message */ |
1829 | c->Request.CDBLen = 1; | |
1830 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1831 | c->Request.Type.Direction = XFER_WRITE; | |
1832 | c->Request.Timeout = 0; | |
1833 | c->Request.CDB[0] = cmd; | |
1834 | break; | |
1835 | default: | |
1836 | printk(KERN_WARNING | |
7c832835 | 1837 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
1838 | return IO_ERROR; |
1839 | } | |
1840 | } else { | |
1841 | printk(KERN_WARNING | |
7c832835 | 1842 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
1843 | return IO_ERROR; |
1844 | } | |
1845 | /* Fill in the scatter gather information */ | |
1846 | if (size > 0) { | |
1847 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
1848 | buff, size, |
1849 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
1850 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
1851 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
1852 | c->SG[0].Len = size; | |
7c832835 | 1853 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
1854 | } |
1855 | return status; | |
1856 | } | |
7c832835 BH |
1857 | |
1858 | static int sendcmd_withirq(__u8 cmd, | |
1859 | int ctlr, | |
1860 | void *buff, | |
1861 | size_t size, | |
1862 | unsigned int use_unit_num, | |
1863 | unsigned int log_unit, __u8 page_code, int cmd_type) | |
1da177e4 LT |
1864 | { |
1865 | ctlr_info_t *h = hba[ctlr]; | |
1866 | CommandList_struct *c; | |
7c832835 | 1867 | u64bit buff_dma_handle; |
1da177e4 LT |
1868 | unsigned long flags; |
1869 | int return_status; | |
6e9a4738 | 1870 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1871 | |
1872 | if ((c = cmd_alloc(h, 0)) == NULL) | |
1da177e4 LT |
1873 | return -ENOMEM; |
1874 | return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 1875 | log_unit, page_code, NULL, cmd_type); |
1da177e4 LT |
1876 | if (return_status != IO_OK) { |
1877 | cmd_free(h, c, 0); | |
1878 | return return_status; | |
1879 | } | |
7c832835 | 1880 | resend_cmd2: |
1da177e4 | 1881 | c->waiting = &wait; |
7c832835 | 1882 | |
1da177e4 LT |
1883 | /* Put the request on the tail of the queue and send it */ |
1884 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1885 | addQ(&h->reqQ, c); | |
1886 | h->Qdepth++; | |
1887 | start_io(h); | |
1888 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
7c832835 | 1889 | |
1da177e4 LT |
1890 | wait_for_completion(&wait); |
1891 | ||
7c832835 BH |
1892 | if (c->err_info->CommandStatus != 0) { /* an error has occurred */ |
1893 | switch (c->err_info->CommandStatus) { | |
1894 | case CMD_TARGET_STATUS: | |
1895 | printk(KERN_WARNING "cciss: cmd %p has " | |
1896 | " completed with errors\n", c); | |
1897 | if (c->err_info->ScsiStatus) { | |
1898 | printk(KERN_WARNING "cciss: cmd %p " | |
1899 | "has SCSI Status = %x\n", | |
1900 | c, c->err_info->ScsiStatus); | |
1901 | } | |
1da177e4 LT |
1902 | |
1903 | break; | |
7c832835 BH |
1904 | case CMD_DATA_UNDERRUN: |
1905 | case CMD_DATA_OVERRUN: | |
1da177e4 LT |
1906 | /* expected for inquire and report lun commands */ |
1907 | break; | |
7c832835 BH |
1908 | case CMD_INVALID: |
1909 | printk(KERN_WARNING "cciss: Cmd %p is " | |
1910 | "reported invalid\n", c); | |
1911 | return_status = IO_ERROR; | |
1da177e4 | 1912 | break; |
7c832835 BH |
1913 | case CMD_PROTOCOL_ERR: |
1914 | printk(KERN_WARNING "cciss: cmd %p has " | |
1915 | "protocol error \n", c); | |
1916 | return_status = IO_ERROR; | |
1da177e4 | 1917 | break; |
7c832835 BH |
1918 | case CMD_HARDWARE_ERR: |
1919 | printk(KERN_WARNING "cciss: cmd %p had " | |
1920 | " hardware error\n", c); | |
1921 | return_status = IO_ERROR; | |
1da177e4 | 1922 | break; |
7c832835 BH |
1923 | case CMD_CONNECTION_LOST: |
1924 | printk(KERN_WARNING "cciss: cmd %p had " | |
1925 | "connection lost\n", c); | |
1926 | return_status = IO_ERROR; | |
1da177e4 | 1927 | break; |
7c832835 BH |
1928 | case CMD_ABORTED: |
1929 | printk(KERN_WARNING "cciss: cmd %p was " | |
1930 | "aborted\n", c); | |
1931 | return_status = IO_ERROR; | |
1da177e4 | 1932 | break; |
7c832835 BH |
1933 | case CMD_ABORT_FAILED: |
1934 | printk(KERN_WARNING "cciss: cmd %p reports " | |
1935 | "abort failed\n", c); | |
1936 | return_status = IO_ERROR; | |
1937 | break; | |
1938 | case CMD_UNSOLICITED_ABORT: | |
1939 | printk(KERN_WARNING | |
1940 | "cciss%d: unsolicited abort %p\n", ctlr, c); | |
1941 | if (c->retry_count < MAX_CMD_RETRIES) { | |
1942 | printk(KERN_WARNING | |
1943 | "cciss%d: retrying %p\n", ctlr, c); | |
1944 | c->retry_count++; | |
1945 | /* erase the old error information */ | |
1946 | memset(c->err_info, 0, | |
1947 | sizeof(ErrorInfo_struct)); | |
1948 | return_status = IO_OK; | |
1949 | INIT_COMPLETION(wait); | |
1950 | goto resend_cmd2; | |
1951 | } | |
1952 | return_status = IO_ERROR; | |
1953 | break; | |
1954 | default: | |
1955 | printk(KERN_WARNING "cciss: cmd %p returned " | |
1956 | "unknown status %x\n", c, | |
1957 | c->err_info->CommandStatus); | |
1958 | return_status = IO_ERROR; | |
1da177e4 | 1959 | } |
7c832835 | 1960 | } |
1da177e4 | 1961 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
1962 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
1963 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
1964 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
1965 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
1da177e4 | 1966 | cmd_free(h, c, 0); |
7c832835 | 1967 | return return_status; |
1da177e4 | 1968 | } |
7c832835 | 1969 | |
1da177e4 | 1970 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
00988a35 | 1971 | int withirq, sector_t total_size, |
7c832835 BH |
1972 | unsigned int block_size, |
1973 | InquiryData_struct *inq_buff, | |
1974 | drive_info_struct *drv) | |
1da177e4 LT |
1975 | { |
1976 | int return_code; | |
00988a35 | 1977 | unsigned long t; |
00988a35 | 1978 | |
1da177e4 LT |
1979 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
1980 | if (withirq) | |
1981 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, | |
7c832835 BH |
1982 | inq_buff, sizeof(*inq_buff), 1, |
1983 | logvol, 0xC1, TYPE_CMD); | |
1da177e4 LT |
1984 | else |
1985 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, | |
7c832835 BH |
1986 | sizeof(*inq_buff), 1, logvol, 0xC1, NULL, |
1987 | TYPE_CMD); | |
1da177e4 | 1988 | if (return_code == IO_OK) { |
7c832835 | 1989 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 1990 | printk(KERN_WARNING |
7c832835 BH |
1991 | "cciss: reading geometry failed, volume " |
1992 | "does not support reading geometry\n"); | |
1da177e4 | 1993 | drv->heads = 255; |
7c832835 | 1994 | drv->sectors = 32; // Sectors per track |
7f42d3b8 | 1995 | drv->cylinders = total_size + 1; |
89f97ad1 | 1996 | drv->raid_level = RAID_UNKNOWN; |
1da177e4 | 1997 | } else { |
1da177e4 LT |
1998 | drv->heads = inq_buff->data_byte[6]; |
1999 | drv->sectors = inq_buff->data_byte[7]; | |
2000 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
2001 | drv->cylinders += inq_buff->data_byte[5]; | |
2002 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
2003 | } |
2004 | drv->block_size = block_size; | |
97c06978 | 2005 | drv->nr_blocks = total_size + 1; |
3f7705ea MW |
2006 | t = drv->heads * drv->sectors; |
2007 | if (t > 1) { | |
97c06978 MMOD |
2008 | sector_t real_size = total_size + 1; |
2009 | unsigned long rem = sector_div(real_size, t); | |
3f7705ea | 2010 | if (rem) |
97c06978 MMOD |
2011 | real_size++; |
2012 | drv->cylinders = real_size; | |
1da177e4 | 2013 | } |
7c832835 | 2014 | } else { /* Get geometry failed */ |
1da177e4 LT |
2015 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
2016 | } | |
cc088d10 | 2017 | printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n", |
7c832835 | 2018 | drv->heads, drv->sectors, drv->cylinders); |
1da177e4 | 2019 | } |
7c832835 | 2020 | |
1da177e4 | 2021 | static void |
00988a35 | 2022 | cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size, |
7c832835 | 2023 | unsigned int *block_size) |
1da177e4 | 2024 | { |
00988a35 | 2025 | ReadCapdata_struct *buf; |
1da177e4 | 2026 | int return_code; |
1aebe187 MK |
2027 | |
2028 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); | |
2029 | if (!buf) { | |
00988a35 MMOD |
2030 | printk(KERN_WARNING "cciss: out of memory\n"); |
2031 | return; | |
2032 | } | |
1aebe187 | 2033 | |
1da177e4 LT |
2034 | if (withirq) |
2035 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
2036 | ctlr, buf, sizeof(ReadCapdata_struct), |
2037 | 1, logvol, 0, TYPE_CMD); | |
1da177e4 LT |
2038 | else |
2039 | return_code = sendcmd(CCISS_READ_CAPACITY, | |
00988a35 MMOD |
2040 | ctlr, buf, sizeof(ReadCapdata_struct), |
2041 | 1, logvol, 0, NULL, TYPE_CMD); | |
1da177e4 | 2042 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2043 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
2044 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
7c832835 | 2045 | } else { /* read capacity command failed */ |
1da177e4 LT |
2046 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
2047 | *total_size = 0; | |
2048 | *block_size = BLOCK_SIZE; | |
2049 | } | |
97c06978 | 2050 | if (*total_size != 0) |
7b92aadf | 2051 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2052 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2053 | kfree(buf); |
00988a35 MMOD |
2054 | } |
2055 | ||
2056 | static void | |
2057 | cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) | |
2058 | { | |
2059 | ReadCapdata_struct_16 *buf; | |
2060 | int return_code; | |
1aebe187 MK |
2061 | |
2062 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2063 | if (!buf) { | |
00988a35 MMOD |
2064 | printk(KERN_WARNING "cciss: out of memory\n"); |
2065 | return; | |
2066 | } | |
1aebe187 | 2067 | |
00988a35 MMOD |
2068 | if (withirq) { |
2069 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, | |
2070 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2071 | 1, logvol, 0, TYPE_CMD); | |
2072 | } | |
2073 | else { | |
2074 | return_code = sendcmd(CCISS_READ_CAPACITY_16, | |
2075 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2076 | 1, logvol, 0, NULL, TYPE_CMD); | |
2077 | } | |
2078 | if (return_code == IO_OK) { | |
4c1f2b31 AV |
2079 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
2080 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
00988a35 MMOD |
2081 | } else { /* read capacity command failed */ |
2082 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
2083 | *total_size = 0; | |
2084 | *block_size = BLOCK_SIZE; | |
2085 | } | |
7b92aadf | 2086 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2087 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2088 | kfree(buf); |
1da177e4 LT |
2089 | } |
2090 | ||
1da177e4 LT |
2091 | static int cciss_revalidate(struct gendisk *disk) |
2092 | { | |
2093 | ctlr_info_t *h = get_host(disk); | |
2094 | drive_info_struct *drv = get_drv(disk); | |
2095 | int logvol; | |
7c832835 | 2096 | int FOUND = 0; |
1da177e4 | 2097 | unsigned int block_size; |
00988a35 | 2098 | sector_t total_size; |
1da177e4 LT |
2099 | InquiryData_struct *inq_buff = NULL; |
2100 | ||
7c832835 BH |
2101 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
2102 | if (h->drv[logvol].LunID == drv->LunID) { | |
2103 | FOUND = 1; | |
1da177e4 LT |
2104 | break; |
2105 | } | |
2106 | } | |
2107 | ||
7c832835 BH |
2108 | if (!FOUND) |
2109 | return 1; | |
1da177e4 | 2110 | |
7c832835 BH |
2111 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2112 | if (inq_buff == NULL) { | |
2113 | printk(KERN_WARNING "cciss: out of memory\n"); | |
7c832835 BH |
2114 | return 1; |
2115 | } | |
00988a35 MMOD |
2116 | if (h->cciss_read == CCISS_READ_10) { |
2117 | cciss_read_capacity(h->ctlr, logvol, 1, | |
2118 | &total_size, &block_size); | |
2119 | } else { | |
2120 | cciss_read_capacity_16(h->ctlr, logvol, 1, | |
2121 | &total_size, &block_size); | |
2122 | } | |
7c832835 BH |
2123 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, |
2124 | inq_buff, drv); | |
1da177e4 | 2125 | |
ad2b9312 | 2126 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
1da177e4 LT |
2127 | set_capacity(disk, drv->nr_blocks); |
2128 | ||
1da177e4 LT |
2129 | kfree(inq_buff); |
2130 | return 0; | |
2131 | } | |
2132 | ||
2133 | /* | |
2134 | * Wait polling for a command to complete. | |
2135 | * The memory mapped FIFO is polled for the completion. | |
2136 | * Used only at init time, interrupts from the HBA are disabled. | |
2137 | */ | |
2138 | static unsigned long pollcomplete(int ctlr) | |
2139 | { | |
2140 | unsigned long done; | |
2141 | int i; | |
2142 | ||
2143 | /* Wait (up to 20 seconds) for a command to complete */ | |
2144 | ||
2145 | for (i = 20 * HZ; i > 0; i--) { | |
2146 | done = hba[ctlr]->access.command_completed(hba[ctlr]); | |
86e84862 NA |
2147 | if (done == FIFO_EMPTY) |
2148 | schedule_timeout_uninterruptible(1); | |
2149 | else | |
e2019b58 | 2150 | return done; |
1da177e4 LT |
2151 | } |
2152 | /* Invalid address to tell caller we ran out of time */ | |
2153 | return 1; | |
2154 | } | |
3da8b713 | 2155 | |
2156 | static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) | |
2157 | { | |
2158 | /* We get in here if sendcmd() is polling for completions | |
7c832835 BH |
2159 | and gets some command back that it wasn't expecting -- |
2160 | something other than that which it just sent down. | |
2161 | Ordinarily, that shouldn't happen, but it can happen when | |
3da8b713 | 2162 | the scsi tape stuff gets into error handling mode, and |
7c832835 | 2163 | starts using sendcmd() to try to abort commands and |
3da8b713 | 2164 | reset tape drives. In that case, sendcmd may pick up |
2165 | completions of commands that were sent to logical drives | |
7c832835 | 2166 | through the block i/o system, or cciss ioctls completing, etc. |
3da8b713 | 2167 | In that case, we need to save those completions for later |
2168 | processing by the interrupt handler. | |
7c832835 | 2169 | */ |
3da8b713 | 2170 | |
2171 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2172 | struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects; |
3da8b713 | 2173 | |
2174 | /* If it's not the scsi tape stuff doing error handling, (abort */ | |
2175 | /* or reset) then we don't expect anything weird. */ | |
2176 | if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) { | |
2177 | #endif | |
7c832835 BH |
2178 | printk(KERN_WARNING "cciss cciss%d: SendCmd " |
2179 | "Invalid command list address returned! (%lx)\n", | |
2180 | ctlr, complete); | |
3da8b713 | 2181 | /* not much we can do. */ |
2182 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2183 | return 1; | |
2184 | } | |
2185 | ||
2186 | /* We've sent down an abort or reset, but something else | |
2187 | has completed */ | |
f880632f | 2188 | if (srl->ncompletions >= (hba[ctlr]->nr_cmds + 2)) { |
3da8b713 | 2189 | /* Uh oh. No room to save it for later... */ |
2190 | printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, " | |
7c832835 | 2191 | "reject list overflow, command lost!\n", ctlr); |
3da8b713 | 2192 | return 1; |
2193 | } | |
2194 | /* Save it for later */ | |
2195 | srl->complete[srl->ncompletions] = complete; | |
2196 | srl->ncompletions++; | |
2197 | #endif | |
2198 | return 0; | |
2199 | } | |
2200 | ||
1da177e4 | 2201 | /* |
7c832835 BH |
2202 | * Send a command to the controller, and wait for it to complete. |
2203 | * Only used at init time. | |
1da177e4 | 2204 | */ |
7c832835 BH |
2205 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, |
2206 | 1: address logical volume log_unit, | |
2207 | 2: periph device address is scsi3addr */ | |
2208 | unsigned int log_unit, | |
2209 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) | |
1da177e4 LT |
2210 | { |
2211 | CommandList_struct *c; | |
2212 | int i; | |
2213 | unsigned long complete; | |
7c832835 | 2214 | ctlr_info_t *info_p = hba[ctlr]; |
1da177e4 | 2215 | u64bit buff_dma_handle; |
3da8b713 | 2216 | int status, done = 0; |
1da177e4 LT |
2217 | |
2218 | if ((c = cmd_alloc(info_p, 1)) == NULL) { | |
2219 | printk(KERN_WARNING "cciss: unable to get memory"); | |
e2019b58 | 2220 | return IO_ERROR; |
1da177e4 LT |
2221 | } |
2222 | status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
7c832835 | 2223 | log_unit, page_code, scsi3addr, cmd_type); |
1da177e4 LT |
2224 | if (status != IO_OK) { |
2225 | cmd_free(info_p, c, 1); | |
2226 | return status; | |
2227 | } | |
7c832835 | 2228 | resend_cmd1: |
1da177e4 | 2229 | /* |
7c832835 BH |
2230 | * Disable interrupt |
2231 | */ | |
1da177e4 LT |
2232 | #ifdef CCISS_DEBUG |
2233 | printk(KERN_DEBUG "cciss: turning intr off\n"); | |
7c832835 BH |
2234 | #endif /* CCISS_DEBUG */ |
2235 | info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF); | |
2236 | ||
1da177e4 | 2237 | /* Make sure there is room in the command FIFO */ |
7c832835 | 2238 | /* Actually it should be completely empty at this time */ |
3da8b713 | 2239 | /* unless we are in here doing error handling for the scsi */ |
2240 | /* tape side of the driver. */ | |
7c832835 | 2241 | for (i = 200000; i > 0; i--) { |
1da177e4 | 2242 | /* if fifo isn't full go */ |
7c832835 BH |
2243 | if (!(info_p->access.fifo_full(info_p))) { |
2244 | ||
2245 | break; | |
2246 | } | |
2247 | udelay(10); | |
2248 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," | |
2249 | " waiting!\n", ctlr); | |
2250 | } | |
2251 | /* | |
2252 | * Send the cmd | |
2253 | */ | |
2254 | info_p->access.submit_command(info_p, c); | |
3da8b713 | 2255 | done = 0; |
2256 | do { | |
2257 | complete = pollcomplete(ctlr); | |
1da177e4 LT |
2258 | |
2259 | #ifdef CCISS_DEBUG | |
3da8b713 | 2260 | printk(KERN_DEBUG "cciss: command completed\n"); |
7c832835 | 2261 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2262 | |
3da8b713 | 2263 | if (complete == 1) { |
7c832835 BH |
2264 | printk(KERN_WARNING |
2265 | "cciss cciss%d: SendCmd Timeout out, " | |
2266 | "No command list address returned!\n", ctlr); | |
3da8b713 | 2267 | status = IO_ERROR; |
2268 | done = 1; | |
2269 | break; | |
2270 | } | |
2271 | ||
2272 | /* This will need to change for direct lookup completions */ | |
7c832835 BH |
2273 | if ((complete & CISS_ERROR_BIT) |
2274 | && (complete & ~CISS_ERROR_BIT) == c->busaddr) { | |
2275 | /* if data overrun or underun on Report command | |
2276 | ignore it | |
2277 | */ | |
1da177e4 LT |
2278 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || |
2279 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || | |
2280 | (c->Request.CDB[0] == CISS_INQUIRY)) && | |
7c832835 BH |
2281 | ((c->err_info->CommandStatus == |
2282 | CMD_DATA_OVERRUN) || | |
2283 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN) | |
2284 | )) { | |
1da177e4 LT |
2285 | complete = c->busaddr; |
2286 | } else { | |
2287 | if (c->err_info->CommandStatus == | |
7c832835 | 2288 | CMD_UNSOLICITED_ABORT) { |
1da177e4 | 2289 | printk(KERN_WARNING "cciss%d: " |
7c832835 BH |
2290 | "unsolicited abort %p\n", |
2291 | ctlr, c); | |
1da177e4 LT |
2292 | if (c->retry_count < MAX_CMD_RETRIES) { |
2293 | printk(KERN_WARNING | |
7c832835 BH |
2294 | "cciss%d: retrying %p\n", |
2295 | ctlr, c); | |
1da177e4 LT |
2296 | c->retry_count++; |
2297 | /* erase the old error */ | |
2298 | /* information */ | |
2299 | memset(c->err_info, 0, | |
7c832835 BH |
2300 | sizeof |
2301 | (ErrorInfo_struct)); | |
1da177e4 LT |
2302 | goto resend_cmd1; |
2303 | } else { | |
2304 | printk(KERN_WARNING | |
7c832835 BH |
2305 | "cciss%d: retried %p too " |
2306 | "many times\n", ctlr, c); | |
1da177e4 LT |
2307 | status = IO_ERROR; |
2308 | goto cleanup1; | |
2309 | } | |
7c832835 BH |
2310 | } else if (c->err_info->CommandStatus == |
2311 | CMD_UNABORTABLE) { | |
2312 | printk(KERN_WARNING | |
2313 | "cciss%d: command could not be aborted.\n", | |
2314 | ctlr); | |
3da8b713 | 2315 | status = IO_ERROR; |
2316 | goto cleanup1; | |
1da177e4 LT |
2317 | } |
2318 | printk(KERN_WARNING "ciss ciss%d: sendcmd" | |
7c832835 BH |
2319 | " Error %x \n", ctlr, |
2320 | c->err_info->CommandStatus); | |
1da177e4 | 2321 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
7c832835 BH |
2322 | " offensive info\n" |
2323 | " size %x\n num %x value %x\n", | |
2324 | ctlr, | |
2325 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2326 | offense_size, | |
2327 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2328 | offense_num, | |
2329 | c->err_info->MoreErrInfo.Invalid_Cmd. | |
2330 | offense_value); | |
1da177e4 LT |
2331 | status = IO_ERROR; |
2332 | goto cleanup1; | |
2333 | } | |
2334 | } | |
3da8b713 | 2335 | /* This will need changing for direct lookup completions */ |
7c832835 | 2336 | if (complete != c->busaddr) { |
3da8b713 | 2337 | if (add_sendcmd_reject(cmd, ctlr, complete) != 0) { |
7c832835 | 2338 | BUG(); /* we are pretty much hosed if we get here. */ |
3da8b713 | 2339 | } |
2340 | continue; | |
7c832835 | 2341 | } else |
3da8b713 | 2342 | done = 1; |
7c832835 BH |
2343 | } while (!done); |
2344 | ||
2345 | cleanup1: | |
1da177e4 | 2346 | /* unlock the data buffer from DMA */ |
bb2a37bf MM |
2347 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2348 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
1da177e4 | 2349 | pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val, |
7c832835 | 2350 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
3da8b713 | 2351 | #ifdef CONFIG_CISS_SCSI_TAPE |
2352 | /* if we saved some commands for later, process them now. */ | |
2353 | if (info_p->scsi_rejects.ncompletions > 0) | |
7d12e780 | 2354 | do_cciss_intr(0, info_p); |
3da8b713 | 2355 | #endif |
1da177e4 | 2356 | cmd_free(info_p, c, 1); |
e2019b58 | 2357 | return status; |
7c832835 BH |
2358 | } |
2359 | ||
1da177e4 LT |
2360 | /* |
2361 | * Map (physical) PCI mem into (virtual) kernel space | |
2362 | */ | |
2363 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2364 | { | |
7c832835 BH |
2365 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2366 | ulong page_offs = ((ulong) base) - page_base; | |
2367 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2368 | |
7c832835 | 2369 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2370 | } |
2371 | ||
7c832835 BH |
2372 | /* |
2373 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2374 | * the Q to wait for completion. | |
2375 | */ | |
2376 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
2377 | { |
2378 | CommandList_struct *c; | |
7c832835 BH |
2379 | |
2380 | while ((c = h->reqQ) != NULL) { | |
1da177e4 LT |
2381 | /* can't do anything if fifo is full */ |
2382 | if ((h->access.fifo_full(h))) { | |
2383 | printk(KERN_WARNING "cciss: fifo full\n"); | |
2384 | break; | |
2385 | } | |
2386 | ||
7c832835 | 2387 | /* Get the first entry from the Request Q */ |
1da177e4 LT |
2388 | removeQ(&(h->reqQ), c); |
2389 | h->Qdepth--; | |
7c832835 BH |
2390 | |
2391 | /* Tell the controller execute command */ | |
1da177e4 | 2392 | h->access.submit_command(h, c); |
7c832835 BH |
2393 | |
2394 | /* Put job onto the completed Q */ | |
2395 | addQ(&(h->cmpQ), c); | |
1da177e4 LT |
2396 | } |
2397 | } | |
7c832835 | 2398 | |
1da177e4 LT |
2399 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
2400 | /* Zeros out the error record and then resends the command back */ | |
2401 | /* to the controller */ | |
7c832835 | 2402 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
2403 | { |
2404 | /* erase the old error information */ | |
2405 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2406 | ||
2407 | /* add it to software queue and then send it to the controller */ | |
7c832835 | 2408 | addQ(&(h->reqQ), c); |
1da177e4 | 2409 | h->Qdepth++; |
7c832835 | 2410 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
2411 | h->maxQsinceinit = h->Qdepth; |
2412 | ||
2413 | start_io(h); | |
2414 | } | |
a9925a06 | 2415 | |
1a614f50 SC |
2416 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
2417 | unsigned int msg_byte, unsigned int host_byte, | |
2418 | unsigned int driver_byte) | |
2419 | { | |
2420 | /* inverse of macros in scsi.h */ | |
2421 | return (scsi_status_byte & 0xff) | | |
2422 | ((msg_byte & 0xff) << 8) | | |
2423 | ((host_byte & 0xff) << 16) | | |
2424 | ((driver_byte & 0xff) << 24); | |
2425 | } | |
2426 | ||
03bbfee5 MMOD |
2427 | static inline int evaluate_target_status(CommandList_struct *cmd) |
2428 | { | |
2429 | unsigned char sense_key; | |
1a614f50 SC |
2430 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
2431 | int error_value; | |
2432 | ||
2433 | /* If we get in here, it means we got "target status", that is, scsi status */ | |
2434 | status_byte = cmd->err_info->ScsiStatus; | |
2435 | driver_byte = DRIVER_OK; | |
2436 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ | |
2437 | ||
2438 | if (blk_pc_request(cmd->rq)) | |
2439 | host_byte = DID_PASSTHROUGH; | |
2440 | else | |
2441 | host_byte = DID_OK; | |
2442 | ||
2443 | error_value = make_status_bytes(status_byte, msg_byte, | |
2444 | host_byte, driver_byte); | |
03bbfee5 | 2445 | |
1a614f50 | 2446 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
03bbfee5 MMOD |
2447 | if (!blk_pc_request(cmd->rq)) |
2448 | printk(KERN_WARNING "cciss: cmd %p " | |
2449 | "has SCSI Status 0x%x\n", | |
2450 | cmd, cmd->err_info->ScsiStatus); | |
1a614f50 | 2451 | return error_value; |
03bbfee5 MMOD |
2452 | } |
2453 | ||
2454 | /* check the sense key */ | |
2455 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
2456 | /* no status or recovered error */ | |
1a614f50 SC |
2457 | if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq)) |
2458 | error_value = 0; | |
03bbfee5 MMOD |
2459 | |
2460 | if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */ | |
1a614f50 | 2461 | if (error_value != 0) |
03bbfee5 MMOD |
2462 | printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" |
2463 | " sense key = 0x%x\n", cmd, sense_key); | |
1a614f50 | 2464 | return error_value; |
03bbfee5 MMOD |
2465 | } |
2466 | ||
2467 | /* SG_IO or similar, copy sense data back */ | |
2468 | if (cmd->rq->sense) { | |
2469 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) | |
2470 | cmd->rq->sense_len = cmd->err_info->SenseLen; | |
2471 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, | |
2472 | cmd->rq->sense_len); | |
2473 | } else | |
2474 | cmd->rq->sense_len = 0; | |
2475 | ||
1a614f50 | 2476 | return error_value; |
03bbfee5 MMOD |
2477 | } |
2478 | ||
7c832835 | 2479 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
2480 | * buffers for the completed job. Note that this function does not need |
2481 | * to hold the hba/queue lock. | |
7c832835 BH |
2482 | */ |
2483 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
2484 | int timeout) | |
1da177e4 | 2485 | { |
1da177e4 | 2486 | int retry_cmd = 0; |
198b7660 MMOD |
2487 | struct request *rq = cmd->rq; |
2488 | ||
2489 | rq->errors = 0; | |
7c832835 | 2490 | |
1da177e4 | 2491 | if (timeout) |
1a614f50 | 2492 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
1da177e4 | 2493 | |
d38ae168 MMOD |
2494 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
2495 | goto after_error_processing; | |
7c832835 | 2496 | |
d38ae168 | 2497 | switch (cmd->err_info->CommandStatus) { |
d38ae168 | 2498 | case CMD_TARGET_STATUS: |
198b7660 | 2499 | rq->errors = evaluate_target_status(cmd); |
d38ae168 MMOD |
2500 | break; |
2501 | case CMD_DATA_UNDERRUN: | |
03bbfee5 MMOD |
2502 | if (blk_fs_request(cmd->rq)) { |
2503 | printk(KERN_WARNING "cciss: cmd %p has" | |
2504 | " completed with data underrun " | |
2505 | "reported\n", cmd); | |
2506 | cmd->rq->data_len = cmd->err_info->ResidualCnt; | |
2507 | } | |
d38ae168 MMOD |
2508 | break; |
2509 | case CMD_DATA_OVERRUN: | |
03bbfee5 MMOD |
2510 | if (blk_fs_request(cmd->rq)) |
2511 | printk(KERN_WARNING "cciss: cmd %p has" | |
2512 | " completed with data overrun " | |
2513 | "reported\n", cmd); | |
d38ae168 MMOD |
2514 | break; |
2515 | case CMD_INVALID: | |
2516 | printk(KERN_WARNING "cciss: cmd %p is " | |
2517 | "reported invalid\n", cmd); | |
1a614f50 SC |
2518 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2519 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2520 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2521 | break; |
2522 | case CMD_PROTOCOL_ERR: | |
2523 | printk(KERN_WARNING "cciss: cmd %p has " | |
2524 | "protocol error \n", cmd); | |
1a614f50 SC |
2525 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2526 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2527 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2528 | break; |
2529 | case CMD_HARDWARE_ERR: | |
2530 | printk(KERN_WARNING "cciss: cmd %p had " | |
2531 | " hardware error\n", cmd); | |
1a614f50 SC |
2532 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2533 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2534 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2535 | break; |
2536 | case CMD_CONNECTION_LOST: | |
2537 | printk(KERN_WARNING "cciss: cmd %p had " | |
2538 | "connection lost\n", cmd); | |
1a614f50 SC |
2539 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2540 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2541 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2542 | break; |
2543 | case CMD_ABORTED: | |
2544 | printk(KERN_WARNING "cciss: cmd %p was " | |
2545 | "aborted\n", cmd); | |
1a614f50 SC |
2546 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2547 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2548 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
2549 | break; |
2550 | case CMD_ABORT_FAILED: | |
2551 | printk(KERN_WARNING "cciss: cmd %p reports " | |
2552 | "abort failed\n", cmd); | |
1a614f50 SC |
2553 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2554 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2555 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2556 | break; |
2557 | case CMD_UNSOLICITED_ABORT: | |
2558 | printk(KERN_WARNING "cciss%d: unsolicited " | |
2559 | "abort %p\n", h->ctlr, cmd); | |
2560 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
2561 | retry_cmd = 1; | |
2562 | printk(KERN_WARNING | |
2563 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
2564 | cmd->retry_count++; | |
2565 | } else | |
2566 | printk(KERN_WARNING | |
2567 | "cciss%d: %p retried too " | |
2568 | "many times\n", h->ctlr, cmd); | |
1a614f50 SC |
2569 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2570 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2571 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
2572 | break; |
2573 | case CMD_TIMEOUT: | |
2574 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
1a614f50 SC |
2575 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2576 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2577 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
2578 | break; |
2579 | default: | |
2580 | printk(KERN_WARNING "cciss: cmd %p returned " | |
2581 | "unknown status %x\n", cmd, | |
2582 | cmd->err_info->CommandStatus); | |
1a614f50 SC |
2583 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
2584 | cmd->err_info->CommandStatus, DRIVER_OK, | |
2585 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
1da177e4 | 2586 | } |
d38ae168 MMOD |
2587 | |
2588 | after_error_processing: | |
2589 | ||
1da177e4 | 2590 | /* We need to return this command */ |
7c832835 BH |
2591 | if (retry_cmd) { |
2592 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 2593 | return; |
7c832835 | 2594 | } |
03bbfee5 | 2595 | cmd->rq->completion_data = cmd; |
a9925a06 | 2596 | blk_complete_request(cmd->rq); |
1da177e4 LT |
2597 | } |
2598 | ||
7c832835 BH |
2599 | /* |
2600 | * Get a request and submit it to the controller. | |
1da177e4 | 2601 | */ |
165125e1 | 2602 | static void do_cciss_request(struct request_queue *q) |
1da177e4 | 2603 | { |
7c832835 | 2604 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 2605 | CommandList_struct *c; |
00988a35 MMOD |
2606 | sector_t start_blk; |
2607 | int seg; | |
1da177e4 LT |
2608 | struct request *creq; |
2609 | u64bit temp64; | |
2610 | struct scatterlist tmp_sg[MAXSGENTRIES]; | |
2611 | drive_info_struct *drv; | |
2612 | int i, dir; | |
2613 | ||
2614 | /* We call start_io here in case there is a command waiting on the | |
2615 | * queue that has not been sent. | |
7c832835 | 2616 | */ |
1da177e4 LT |
2617 | if (blk_queue_plugged(q)) |
2618 | goto startio; | |
2619 | ||
7c832835 | 2620 | queue: |
1da177e4 LT |
2621 | creq = elv_next_request(q); |
2622 | if (!creq) | |
2623 | goto startio; | |
2624 | ||
089fe1b2 | 2625 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
1da177e4 | 2626 | |
7c832835 | 2627 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
2628 | goto full; |
2629 | ||
2630 | blkdev_dequeue_request(creq); | |
2631 | ||
2632 | spin_unlock_irq(q->queue_lock); | |
2633 | ||
2634 | c->cmd_type = CMD_RWREQ; | |
2635 | c->rq = creq; | |
7c832835 BH |
2636 | |
2637 | /* fill in the request */ | |
1da177e4 | 2638 | drv = creq->rq_disk->private_data; |
7c832835 | 2639 | c->Header.ReplyQueue = 0; // unused in simple mode |
33079b21 MM |
2640 | /* got command from pool, so use the command block index instead */ |
2641 | /* for direct lookups. */ | |
2642 | /* The first 2 bits are reserved for controller error reporting. */ | |
2643 | c->Header.Tag.lower = (c->cmdindex << 3); | |
7c832835 BH |
2644 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
2645 | c->Header.LUN.LogDev.VolId = drv->LunID; | |
1da177e4 | 2646 | c->Header.LUN.LogDev.Mode = 1; |
7c832835 BH |
2647 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
2648 | c->Request.Type.Type = TYPE_CMD; // It is a command. | |
2649 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2650 | c->Request.Type.Direction = | |
a52de245 | 2651 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
7c832835 BH |
2652 | c->Request.Timeout = 0; // Don't time out |
2653 | c->Request.CDB[0] = | |
00988a35 | 2654 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
1da177e4 LT |
2655 | start_blk = creq->sector; |
2656 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2657 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", (int)creq->sector, |
2658 | (int)creq->nr_sectors); | |
2659 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 2660 | |
45711f1a | 2661 | sg_init_table(tmp_sg, MAXSGENTRIES); |
1da177e4 LT |
2662 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
2663 | ||
7c832835 | 2664 | /* get the DMA records for the setup */ |
1da177e4 LT |
2665 | if (c->Request.Type.Direction == XFER_READ) |
2666 | dir = PCI_DMA_FROMDEVICE; | |
2667 | else | |
2668 | dir = PCI_DMA_TODEVICE; | |
2669 | ||
7c832835 | 2670 | for (i = 0; i < seg; i++) { |
1da177e4 | 2671 | c->SG[i].Len = tmp_sg[i].length; |
45711f1a | 2672 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
7c832835 BH |
2673 | tmp_sg[i].offset, |
2674 | tmp_sg[i].length, dir); | |
1da177e4 | 2675 | c->SG[i].Addr.lower = temp64.val32.lower; |
7c832835 BH |
2676 | c->SG[i].Addr.upper = temp64.val32.upper; |
2677 | c->SG[i].Ext = 0; // we are not chaining | |
1da177e4 | 2678 | } |
7c832835 BH |
2679 | /* track how many SG entries we are using */ |
2680 | if (seg > h->maxSG) | |
2681 | h->maxSG = seg; | |
1da177e4 LT |
2682 | |
2683 | #ifdef CCISS_DEBUG | |
7c832835 BH |
2684 | printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", |
2685 | creq->nr_sectors, seg); | |
2686 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
2687 | |
2688 | c->Header.SGList = c->Header.SGTotal = seg; | |
03bbfee5 MMOD |
2689 | if (likely(blk_fs_request(creq))) { |
2690 | if(h->cciss_read == CCISS_READ_10) { | |
2691 | c->Request.CDB[1] = 0; | |
2692 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB | |
2693 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; | |
2694 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
2695 | c->Request.CDB[5] = start_blk & 0xff; | |
2696 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB | |
2697 | c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff; | |
2698 | c->Request.CDB[8] = creq->nr_sectors & 0xff; | |
2699 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; | |
2700 | } else { | |
582539e5 RD |
2701 | u32 upper32 = upper_32_bits(start_blk); |
2702 | ||
03bbfee5 MMOD |
2703 | c->Request.CDBLen = 16; |
2704 | c->Request.CDB[1]= 0; | |
582539e5 RD |
2705 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; //MSB |
2706 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; | |
2707 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; | |
2708 | c->Request.CDB[5]= upper32 & 0xff; | |
03bbfee5 MMOD |
2709 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
2710 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
2711 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
2712 | c->Request.CDB[9]= start_blk & 0xff; | |
2713 | c->Request.CDB[10]= (creq->nr_sectors >> 24) & 0xff; | |
2714 | c->Request.CDB[11]= (creq->nr_sectors >> 16) & 0xff; | |
2715 | c->Request.CDB[12]= (creq->nr_sectors >> 8) & 0xff; | |
2716 | c->Request.CDB[13]= creq->nr_sectors & 0xff; | |
2717 | c->Request.CDB[14] = c->Request.CDB[15] = 0; | |
2718 | } | |
2719 | } else if (blk_pc_request(creq)) { | |
2720 | c->Request.CDBLen = creq->cmd_len; | |
2721 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); | |
00988a35 | 2722 | } else { |
03bbfee5 MMOD |
2723 | printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); |
2724 | BUG(); | |
00988a35 | 2725 | } |
1da177e4 LT |
2726 | |
2727 | spin_lock_irq(q->queue_lock); | |
2728 | ||
7c832835 | 2729 | addQ(&(h->reqQ), c); |
1da177e4 | 2730 | h->Qdepth++; |
7c832835 BH |
2731 | if (h->Qdepth > h->maxQsinceinit) |
2732 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
2733 | |
2734 | goto queue; | |
00988a35 | 2735 | full: |
1da177e4 | 2736 | blk_stop_queue(q); |
00988a35 | 2737 | startio: |
1da177e4 LT |
2738 | /* We will already have the driver lock here so not need |
2739 | * to lock it. | |
7c832835 | 2740 | */ |
1da177e4 LT |
2741 | start_io(h); |
2742 | } | |
2743 | ||
3da8b713 | 2744 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
2745 | { | |
2746 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2747 | /* Any rejects from sendcmd() lying around? Process them first */ | |
2748 | if (h->scsi_rejects.ncompletions == 0) | |
2749 | return h->access.command_completed(h); | |
2750 | else { | |
2751 | struct sendcmd_reject_list *srl; | |
2752 | int n; | |
2753 | srl = &h->scsi_rejects; | |
2754 | n = --srl->ncompletions; | |
2755 | /* printk("cciss%d: processing saved reject\n", h->ctlr); */ | |
2756 | printk("p"); | |
2757 | return srl->complete[n]; | |
2758 | } | |
2759 | #else | |
2760 | return h->access.command_completed(h); | |
2761 | #endif | |
2762 | } | |
2763 | ||
2764 | static inline int interrupt_pending(ctlr_info_t *h) | |
2765 | { | |
2766 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 | 2767 | return (h->access.intr_pending(h) |
3da8b713 | 2768 | || (h->scsi_rejects.ncompletions > 0)); |
2769 | #else | |
2770 | return h->access.intr_pending(h); | |
2771 | #endif | |
2772 | } | |
2773 | ||
2774 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
2775 | { | |
2776 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
2777 | return (((h->access.intr_pending(h) == 0) || |
2778 | (h->interrupts_enabled == 0)) | |
2779 | && (h->scsi_rejects.ncompletions == 0)); | |
3da8b713 | 2780 | #else |
7c832835 | 2781 | return (((h->access.intr_pending(h) == 0) || |
3da8b713 | 2782 | (h->interrupts_enabled == 0))); |
2783 | #endif | |
2784 | } | |
2785 | ||
7d12e780 | 2786 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
1da177e4 LT |
2787 | { |
2788 | ctlr_info_t *h = dev_id; | |
2789 | CommandList_struct *c; | |
2790 | unsigned long flags; | |
33079b21 | 2791 | __u32 a, a1, a2; |
1da177e4 | 2792 | |
3da8b713 | 2793 | if (interrupt_not_for_us(h)) |
1da177e4 | 2794 | return IRQ_NONE; |
1da177e4 LT |
2795 | /* |
2796 | * If there are completed commands in the completion queue, | |
2797 | * we had better do something about it. | |
2798 | */ | |
2799 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 2800 | while (interrupt_pending(h)) { |
7c832835 | 2801 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
1da177e4 | 2802 | a1 = a; |
33079b21 MM |
2803 | if ((a & 0x04)) { |
2804 | a2 = (a >> 3); | |
f880632f | 2805 | if (a2 >= h->nr_cmds) { |
7c832835 BH |
2806 | printk(KERN_WARNING |
2807 | "cciss: controller cciss%d failed, stopping.\n", | |
2808 | h->ctlr); | |
33079b21 MM |
2809 | fail_all_cmds(h->ctlr); |
2810 | return IRQ_HANDLED; | |
2811 | } | |
2812 | ||
2813 | c = h->cmd_pool + a2; | |
2814 | a = c->busaddr; | |
2815 | ||
2816 | } else { | |
7c832835 | 2817 | a &= ~3; |
33079b21 | 2818 | if ((c = h->cmpQ) == NULL) { |
7c832835 BH |
2819 | printk(KERN_WARNING |
2820 | "cciss: Completion of %08x ignored\n", | |
2821 | a1); | |
2822 | continue; | |
2823 | } | |
2824 | while (c->busaddr != a) { | |
2825 | c = c->next; | |
2826 | if (c == h->cmpQ) | |
2827 | break; | |
2828 | } | |
33079b21 | 2829 | } |
1da177e4 LT |
2830 | /* |
2831 | * If we've found the command, take it off the | |
2832 | * completion Q and free it | |
2833 | */ | |
7c832835 | 2834 | if (c->busaddr == a) { |
1da177e4 LT |
2835 | removeQ(&h->cmpQ, c); |
2836 | if (c->cmd_type == CMD_RWREQ) { | |
2837 | complete_command(h, c, 0); | |
2838 | } else if (c->cmd_type == CMD_IOCTL_PEND) { | |
2839 | complete(c->waiting); | |
2840 | } | |
2841 | # ifdef CONFIG_CISS_SCSI_TAPE | |
2842 | else if (c->cmd_type == CMD_SCSI) | |
2843 | complete_scsi_command(c, 0, a1); | |
2844 | # endif | |
2845 | continue; | |
2846 | } | |
2847 | } | |
2848 | } | |
2849 | ||
1da177e4 LT |
2850 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2851 | return IRQ_HANDLED; | |
2852 | } | |
7c832835 BH |
2853 | |
2854 | /* | |
d14c4ab5 | 2855 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 2856 | * the io functions. |
7c832835 | 2857 | * This is for debug only. |
1da177e4 LT |
2858 | */ |
2859 | #ifdef CCISS_DEBUG | |
7c832835 | 2860 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 LT |
2861 | { |
2862 | int i; | |
2863 | char temp_name[17]; | |
2864 | ||
2865 | printk("Controller Configuration information\n"); | |
2866 | printk("------------------------------------\n"); | |
7c832835 | 2867 | for (i = 0; i < 4; i++) |
1da177e4 | 2868 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
2869 | temp_name[4] = '\0'; |
2870 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 2871 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
2872 | printk(" Transport methods supported = 0x%x\n", |
2873 | readl(&(tb->TransportSupport))); | |
2874 | printk(" Transport methods active = 0x%x\n", | |
2875 | readl(&(tb->TransportActive))); | |
2876 | printk(" Requested transport Method = 0x%x\n", | |
2877 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 2878 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 2879 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 2880 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
2881 | readl(&(tb->HostWrite.CoalIntCount))); |
2882 | printk(" Max outstanding commands = 0x%d\n", | |
2883 | readl(&(tb->CmdsOutMax))); | |
2884 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
2885 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
2886 | temp_name[i] = readb(&(tb->ServerName[i])); |
2887 | temp_name[16] = '\0'; | |
2888 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 2889 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
1da177e4 | 2890 | } |
7c832835 | 2891 | #endif /* CCISS_DEBUG */ |
1da177e4 | 2892 | |
7c832835 | 2893 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
2894 | { |
2895 | int i, offset, mem_type, bar_type; | |
7c832835 | 2896 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
2897 | return 0; |
2898 | offset = 0; | |
7c832835 BH |
2899 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
2900 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
2901 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
2902 | offset += 4; | |
2903 | else { | |
2904 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 2905 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 2906 | switch (mem_type) { |
7c832835 BH |
2907 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
2908 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
2909 | offset += 4; /* 32 bit */ | |
2910 | break; | |
2911 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
2912 | offset += 8; | |
2913 | break; | |
2914 | default: /* reserved in PCI 2.2 */ | |
2915 | printk(KERN_WARNING | |
2916 | "Base address is invalid\n"); | |
2917 | return -1; | |
1da177e4 LT |
2918 | break; |
2919 | } | |
2920 | } | |
7c832835 BH |
2921 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
2922 | return i + 1; | |
1da177e4 LT |
2923 | } |
2924 | return -1; | |
2925 | } | |
2926 | ||
fb86a35b MM |
2927 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
2928 | * controllers that are capable. If not, we use IO-APIC mode. | |
2929 | */ | |
2930 | ||
7c832835 BH |
2931 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
2932 | struct pci_dev *pdev, __u32 board_id) | |
fb86a35b MM |
2933 | { |
2934 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
2935 | int err; |
2936 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
2937 | {0, 2}, {0, 3} | |
2938 | }; | |
fb86a35b MM |
2939 | |
2940 | /* Some boards advertise MSI but don't really support it */ | |
2941 | if ((board_id == 0x40700E11) || | |
7c832835 BH |
2942 | (board_id == 0x40800E11) || |
2943 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
fb86a35b MM |
2944 | goto default_int_mode; |
2945 | ||
7c832835 BH |
2946 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
2947 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); | |
2948 | if (!err) { | |
2949 | c->intr[0] = cciss_msix_entries[0].vector; | |
2950 | c->intr[1] = cciss_msix_entries[1].vector; | |
2951 | c->intr[2] = cciss_msix_entries[2].vector; | |
2952 | c->intr[3] = cciss_msix_entries[3].vector; | |
2953 | c->msix_vector = 1; | |
2954 | return; | |
2955 | } | |
2956 | if (err > 0) { | |
2957 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
2958 | "available\n", err); | |
1ecb9c0f | 2959 | goto default_int_mode; |
7c832835 BH |
2960 | } else { |
2961 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
2962 | err); | |
1ecb9c0f | 2963 | goto default_int_mode; |
7c832835 BH |
2964 | } |
2965 | } | |
2966 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
2967 | if (!pci_enable_msi(pdev)) { | |
7c832835 | 2968 | c->msi_vector = 1; |
7c832835 BH |
2969 | } else { |
2970 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
7c832835 BH |
2971 | } |
2972 | } | |
1ecb9c0f | 2973 | default_int_mode: |
7c832835 | 2974 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 2975 | /* if we get here we're going to use the default interrupt mode */ |
7c832835 | 2976 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
fb86a35b MM |
2977 | return; |
2978 | } | |
2979 | ||
7d1fd970 | 2980 | static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
1da177e4 LT |
2981 | { |
2982 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
2983 | __u32 board_id, scratchpad = 0; | |
2984 | __u64 cfg_offset; | |
2985 | __u32 cfg_base_addr; | |
2986 | __u64 cfg_base_addr_index; | |
c33ac89b | 2987 | int i, err; |
1da177e4 LT |
2988 | |
2989 | /* check to see if controller has been disabled */ | |
2990 | /* BEFORE trying to enable it */ | |
7c832835 BH |
2991 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
2992 | if (!(command & 0x02)) { | |
2993 | printk(KERN_WARNING | |
2994 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 2995 | return -ENODEV; |
1da177e4 LT |
2996 | } |
2997 | ||
c33ac89b | 2998 | err = pci_enable_device(pdev); |
7c832835 | 2999 | if (err) { |
1da177e4 | 3000 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 3001 | return err; |
1da177e4 | 3002 | } |
1da177e4 | 3003 | |
4e570309 BH |
3004 | err = pci_request_regions(pdev, "cciss"); |
3005 | if (err) { | |
3006 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 3007 | "aborting\n"); |
872225ca | 3008 | return err; |
4e570309 BH |
3009 | } |
3010 | ||
1da177e4 LT |
3011 | subsystem_vendor_id = pdev->subsystem_vendor; |
3012 | subsystem_device_id = pdev->subsystem_device; | |
3013 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
7c832835 | 3014 | subsystem_vendor_id); |
1da177e4 | 3015 | |
1da177e4 LT |
3016 | #ifdef CCISS_DEBUG |
3017 | printk("command = %x\n", command); | |
3018 | printk("irq = %x\n", pdev->irq); | |
3019 | printk("board_id = %x\n", board_id); | |
7c832835 | 3020 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3021 | |
fb86a35b MM |
3022 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
3023 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
3024 | */ | |
3025 | cciss_interrupt_mode(c, pdev, board_id); | |
1da177e4 LT |
3026 | |
3027 | /* | |
3028 | * Memory base addr is first addr , the second points to the config | |
7c832835 | 3029 | * table |
1da177e4 LT |
3030 | */ |
3031 | ||
7c832835 | 3032 | c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */ |
1da177e4 LT |
3033 | #ifdef CCISS_DEBUG |
3034 | printk("address 0 = %x\n", c->paddr); | |
7c832835 | 3035 | #endif /* CCISS_DEBUG */ |
a5b92873 | 3036 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
1da177e4 LT |
3037 | |
3038 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
3039 | * We poll for up to 120 secs, once per 100ms. */ | |
7c832835 | 3040 | for (i = 0; i < 1200; i++) { |
1da177e4 LT |
3041 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
3042 | if (scratchpad == CCISS_FIRMWARE_READY) | |
3043 | break; | |
3044 | set_current_state(TASK_INTERRUPTIBLE); | |
7c832835 | 3045 | schedule_timeout(HZ / 10); /* wait 100ms */ |
1da177e4 LT |
3046 | } |
3047 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
3048 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
c33ac89b | 3049 | err = -ENODEV; |
4e570309 | 3050 | goto err_out_free_res; |
1da177e4 LT |
3051 | } |
3052 | ||
3053 | /* get the address index number */ | |
3054 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
3055 | cfg_base_addr &= (__u32) 0x0000ffff; | |
3056 | #ifdef CCISS_DEBUG | |
3057 | printk("cfg base address = %x\n", cfg_base_addr); | |
7c832835 BH |
3058 | #endif /* CCISS_DEBUG */ |
3059 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); | |
1da177e4 LT |
3060 | #ifdef CCISS_DEBUG |
3061 | printk("cfg base address index = %x\n", cfg_base_addr_index); | |
7c832835 | 3062 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
3063 | if (cfg_base_addr_index == -1) { |
3064 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
c33ac89b | 3065 | err = -ENODEV; |
4e570309 | 3066 | goto err_out_free_res; |
1da177e4 LT |
3067 | } |
3068 | ||
3069 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
3070 | #ifdef CCISS_DEBUG | |
3071 | printk("cfg offset = %x\n", cfg_offset); | |
7c832835 BH |
3072 | #endif /* CCISS_DEBUG */ |
3073 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
3074 | cfg_base_addr_index) + | |
3075 | cfg_offset, sizeof(CfgTable_struct)); | |
1da177e4 LT |
3076 | c->board_id = board_id; |
3077 | ||
3078 | #ifdef CCISS_DEBUG | |
945f390f | 3079 | print_cfg_table(c->cfgtable); |
7c832835 | 3080 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3081 | |
7c832835 | 3082 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
1da177e4 LT |
3083 | if (board_id == products[i].board_id) { |
3084 | c->product_name = products[i].product_name; | |
3085 | c->access = *(products[i].access); | |
f880632f | 3086 | c->nr_cmds = products[i].nr_cmds; |
1da177e4 LT |
3087 | break; |
3088 | } | |
3089 | } | |
7c832835 BH |
3090 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
3091 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
3092 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
3093 | (readb(&c->cfgtable->Signature[3]) != 'S')) { | |
1da177e4 | 3094 | printk("Does not appear to be a valid CISS config table\n"); |
c33ac89b | 3095 | err = -ENODEV; |
4e570309 | 3096 | goto err_out_free_res; |
1da177e4 | 3097 | } |
4ff9a9a4 MM |
3098 | /* We didn't find the controller in our list. We know the |
3099 | * signature is valid. If it's an HP device let's try to | |
3100 | * bind to the device and fire it up. Otherwise we bail. | |
3101 | */ | |
3102 | if (i == ARRAY_SIZE(products)) { | |
3103 | if (subsystem_vendor_id == PCI_VENDOR_ID_HP) { | |
3104 | c->product_name = products[i-1].product_name; | |
3105 | c->access = *(products[i-1].access); | |
f880632f | 3106 | c->nr_cmds = products[i-1].nr_cmds; |
4ff9a9a4 MM |
3107 | printk(KERN_WARNING "cciss: This is an unknown " |
3108 | "Smart Array controller.\n" | |
3109 | "cciss: Please update to the latest driver " | |
3110 | "available from www.hp.com.\n"); | |
3111 | } else { | |
3112 | printk(KERN_WARNING "cciss: Sorry, I don't know how" | |
3113 | " to access the Smart Array controller %08lx\n" | |
3114 | , (unsigned long)board_id); | |
3115 | err = -ENODEV; | |
3116 | goto err_out_free_res; | |
3117 | } | |
3118 | } | |
1da177e4 | 3119 | #ifdef CONFIG_X86 |
7c832835 BH |
3120 | { |
3121 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
3122 | __u32 prefetch; | |
3123 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
3124 | prefetch |= 0x100; | |
3125 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
3126 | } | |
1da177e4 LT |
3127 | #endif |
3128 | ||
8bf50f71 MMOD |
3129 | /* Disabling DMA prefetch and refetch for the P600. |
3130 | * An ASIC bug may result in accesses to invalid memory addresses. | |
3131 | * We've disabled prefetch for some time now. Testing with XEN | |
3132 | * kernels revealed a bug in the refetch if dom0 resides on a P600. | |
f92e2f5f MM |
3133 | */ |
3134 | if(board_id == 0x3225103C) { | |
3135 | __u32 dma_prefetch; | |
8bf50f71 | 3136 | __u32 dma_refetch; |
f92e2f5f MM |
3137 | dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); |
3138 | dma_prefetch |= 0x8000; | |
3139 | writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); | |
8bf50f71 MMOD |
3140 | pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch); |
3141 | dma_refetch |= 0x1; | |
3142 | pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch); | |
f92e2f5f MM |
3143 | } |
3144 | ||
1da177e4 LT |
3145 | #ifdef CCISS_DEBUG |
3146 | printk("Trying to put board into Simple mode\n"); | |
7c832835 | 3147 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3148 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
7c832835 BH |
3149 | /* Update the field, and then ring the doorbell */ |
3150 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); | |
3151 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); | |
1da177e4 LT |
3152 | |
3153 | /* under certain very rare conditions, this can take awhile. | |
3154 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3155 | * as we enter this code.) */ | |
7c832835 | 3156 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
1da177e4 LT |
3157 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
3158 | break; | |
3159 | /* delay and try again */ | |
3160 | set_current_state(TASK_INTERRUPTIBLE); | |
3161 | schedule_timeout(10); | |
7c832835 | 3162 | } |
1da177e4 LT |
3163 | |
3164 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3165 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
3166 | readl(c->vaddr + SA5_DOORBELL)); | |
3167 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3168 | #ifdef CCISS_DEBUG |
7c832835 BH |
3169 | print_cfg_table(c->cfgtable); |
3170 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 3171 | |
7c832835 | 3172 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
1da177e4 | 3173 | printk(KERN_WARNING "cciss: unable to get board into" |
7c832835 | 3174 | " simple mode\n"); |
c33ac89b | 3175 | err = -ENODEV; |
4e570309 | 3176 | goto err_out_free_res; |
1da177e4 LT |
3177 | } |
3178 | return 0; | |
3179 | ||
5faad620 | 3180 | err_out_free_res: |
872225ca MM |
3181 | /* |
3182 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3183 | * Smart Array controllers that pci_enable_device does not undo | |
3184 | */ | |
4e570309 | 3185 | pci_release_regions(pdev); |
c33ac89b | 3186 | return err; |
1da177e4 LT |
3187 | } |
3188 | ||
7c832835 BH |
3189 | /* |
3190 | * Gets information about the local volumes attached to the controller. | |
3191 | */ | |
1da177e4 LT |
3192 | static void cciss_getgeometry(int cntl_num) |
3193 | { | |
3194 | ReportLunData_struct *ld_buff; | |
1da177e4 LT |
3195 | InquiryData_struct *inq_buff; |
3196 | int return_code; | |
3197 | int i; | |
3198 | int listlength = 0; | |
3199 | __u32 lunid = 0; | |
b4482a4b | 3200 | unsigned block_size; |
00988a35 | 3201 | sector_t total_size; |
1da177e4 | 3202 | |
06ff37ff | 3203 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
7c832835 BH |
3204 | if (ld_buff == NULL) { |
3205 | printk(KERN_ERR "cciss: out of memory\n"); | |
3206 | return; | |
3207 | } | |
7c832835 BH |
3208 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
3209 | if (inq_buff == NULL) { | |
3210 | printk(KERN_ERR "cciss: out of memory\n"); | |
1da177e4 | 3211 | kfree(ld_buff); |
7c832835 BH |
3212 | return; |
3213 | } | |
3214 | /* Get the firmware version */ | |
3215 | return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff, | |
3216 | sizeof(InquiryData_struct), 0, 0, 0, NULL, | |
3217 | TYPE_CMD); | |
3218 | if (return_code == IO_OK) { | |
1da177e4 LT |
3219 | hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32]; |
3220 | hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33]; | |
3221 | hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34]; | |
3222 | hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35]; | |
7c832835 BH |
3223 | } else { /* send command failed */ |
3224 | ||
1da177e4 | 3225 | printk(KERN_WARNING "cciss: unable to determine firmware" |
7c832835 | 3226 | " version of controller\n"); |
1da177e4 | 3227 | } |
7c832835 BH |
3228 | /* Get the number of logical volumes */ |
3229 | return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff, | |
3230 | sizeof(ReportLunData_struct), 0, 0, 0, NULL, | |
3231 | TYPE_CMD); | |
1da177e4 | 3232 | |
7c832835 | 3233 | if (return_code == IO_OK) { |
1da177e4 LT |
3234 | #ifdef CCISS_DEBUG |
3235 | printk("LUN Data\n--------------------------\n"); | |
7c832835 BH |
3236 | #endif /* CCISS_DEBUG */ |
3237 | ||
3238 | listlength |= | |
3239 | (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24; | |
3240 | listlength |= | |
3241 | (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16; | |
3242 | listlength |= | |
3243 | (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8; | |
1da177e4 | 3244 | listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]); |
7c832835 BH |
3245 | } else { /* reading number of logical volumes failed */ |
3246 | ||
1da177e4 | 3247 | printk(KERN_WARNING "cciss: report logical volume" |
7c832835 | 3248 | " command failed\n"); |
1da177e4 LT |
3249 | listlength = 0; |
3250 | } | |
7c832835 BH |
3251 | hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry |
3252 | if (hba[cntl_num]->num_luns > CISS_MAX_LUN) { | |
3253 | printk(KERN_ERR | |
3254 | "ciss: only %d number of logical volumes supported\n", | |
3255 | CISS_MAX_LUN); | |
1da177e4 LT |
3256 | hba[cntl_num]->num_luns = CISS_MAX_LUN; |
3257 | } | |
3258 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3259 | printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", |
3260 | ld_buff->LUNListLength[0], ld_buff->LUNListLength[1], | |
3261 | ld_buff->LUNListLength[2], ld_buff->LUNListLength[3], | |
3262 | hba[cntl_num]->num_luns); | |
3263 | #endif /* CCISS_DEBUG */ | |
3264 | ||
3265 | hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns - 1; | |
7c832835 BH |
3266 | for (i = 0; i < CISS_MAX_LUN; i++) { |
3267 | if (i < hba[cntl_num]->num_luns) { | |
3268 | lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) | |
3269 | << 24; | |
3270 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) | |
3271 | << 16; | |
3272 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) | |
3273 | << 8; | |
3274 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); | |
3275 | ||
3276 | hba[cntl_num]->drv[i].LunID = lunid; | |
1da177e4 LT |
3277 | |
3278 | #ifdef CCISS_DEBUG | |
7c832835 BH |
3279 | printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i, |
3280 | ld_buff->LUN[i][0], ld_buff->LUN[i][1], | |
3281 | ld_buff->LUN[i][2], ld_buff->LUN[i][3], | |
3282 | hba[cntl_num]->drv[i].LunID); | |
3283 | #endif /* CCISS_DEBUG */ | |
00988a35 MMOD |
3284 | |
3285 | /* testing to see if 16-byte CDBs are already being used */ | |
3286 | if(hba[cntl_num]->cciss_read == CCISS_READ_16) { | |
3287 | cciss_read_capacity_16(cntl_num, i, 0, | |
7c832835 | 3288 | &total_size, &block_size); |
00988a35 MMOD |
3289 | goto geo_inq; |
3290 | } | |
3291 | cciss_read_capacity(cntl_num, i, 0, &total_size, &block_size); | |
3292 | ||
97c06978 MMOD |
3293 | /* If read_capacity returns all F's the logical is >2TB */ |
3294 | /* so we switch to 16-byte CDBs for all read/write ops */ | |
3295 | if(total_size == 0xFFFFFFFFULL) { | |
00988a35 MMOD |
3296 | cciss_read_capacity_16(cntl_num, i, 0, |
3297 | &total_size, &block_size); | |
3298 | hba[cntl_num]->cciss_read = CCISS_READ_16; | |
3299 | hba[cntl_num]->cciss_write = CCISS_WRITE_16; | |
3300 | } else { | |
3301 | hba[cntl_num]->cciss_read = CCISS_READ_10; | |
3302 | hba[cntl_num]->cciss_write = CCISS_WRITE_10; | |
3303 | } | |
3304 | geo_inq: | |
ddd47442 | 3305 | cciss_geometry_inquiry(cntl_num, i, 0, total_size, |
7c832835 BH |
3306 | block_size, inq_buff, |
3307 | &hba[cntl_num]->drv[i]); | |
ddd47442 MM |
3308 | } else { |
3309 | /* initialize raid_level to indicate a free space */ | |
3310 | hba[cntl_num]->drv[i].raid_level = -1; | |
3311 | } | |
1da177e4 LT |
3312 | } |
3313 | kfree(ld_buff); | |
1da177e4 | 3314 | kfree(inq_buff); |
7c832835 | 3315 | } |
1da177e4 LT |
3316 | |
3317 | /* Function to find the first free pointer into our hba[] array */ | |
3318 | /* Returns -1 if no free entries are left. */ | |
3319 | static int alloc_cciss_hba(void) | |
3320 | { | |
799202cb | 3321 | int i; |
1da177e4 | 3322 | |
7c832835 | 3323 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
3324 | if (!hba[i]) { |
3325 | ctlr_info_t *p; | |
f2912a12 | 3326 | |
06ff37ff | 3327 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
3328 | if (!p) |
3329 | goto Enomem; | |
799202cb | 3330 | p->gendisk[0] = alloc_disk(1 << NWD_SHIFT); |
f2912a12 JJ |
3331 | if (!p->gendisk[0]) { |
3332 | kfree(p); | |
799202cb | 3333 | goto Enomem; |
f2912a12 | 3334 | } |
1da177e4 LT |
3335 | hba[i] = p; |
3336 | return i; | |
3337 | } | |
3338 | } | |
3339 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 3340 | " of %d controllers.\n", MAX_CTLR); |
799202cb MM |
3341 | return -1; |
3342 | Enomem: | |
1da177e4 | 3343 | printk(KERN_ERR "cciss: out of memory.\n"); |
1da177e4 LT |
3344 | return -1; |
3345 | } | |
3346 | ||
3347 | static void free_hba(int i) | |
3348 | { | |
3349 | ctlr_info_t *p = hba[i]; | |
3350 | int n; | |
3351 | ||
3352 | hba[i] = NULL; | |
799202cb | 3353 | for (n = 0; n < CISS_MAX_LUN; n++) |
1da177e4 LT |
3354 | put_disk(p->gendisk[n]); |
3355 | kfree(p); | |
3356 | } | |
3357 | ||
3358 | /* | |
3359 | * This is it. Find all the controllers and register them. I really hate | |
3360 | * stealing all these major device numbers. | |
3361 | * returns the number of block devices registered. | |
3362 | */ | |
3363 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 3364 | const struct pci_device_id *ent) |
1da177e4 | 3365 | { |
1da177e4 | 3366 | int i; |
799202cb | 3367 | int j = 0; |
1da177e4 | 3368 | int rc; |
40aabb58 | 3369 | int dac; |
1da177e4 | 3370 | |
1da177e4 | 3371 | i = alloc_cciss_hba(); |
7c832835 | 3372 | if (i < 0) |
e2019b58 | 3373 | return -1; |
1f8ef380 MM |
3374 | |
3375 | hba[i]->busy_initializing = 1; | |
3376 | ||
1da177e4 LT |
3377 | if (cciss_pci_init(hba[i], pdev) != 0) |
3378 | goto clean1; | |
3379 | ||
3380 | sprintf(hba[i]->devname, "cciss%d", i); | |
3381 | hba[i]->ctlr = i; | |
3382 | hba[i]->pdev = pdev; | |
3383 | ||
3384 | /* configure PCI DMA stuff */ | |
eb0df996 | 3385 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) |
40aabb58 | 3386 | dac = 1; |
eb0df996 | 3387 | else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) |
40aabb58 | 3388 | dac = 0; |
1da177e4 | 3389 | else { |
40aabb58 | 3390 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
3391 | goto clean1; |
3392 | } | |
3393 | ||
3394 | /* | |
3395 | * register with the major number, or get a dynamic major number | |
3396 | * by passing 0 as argument. This is done for greater than | |
3397 | * 8 controller support. | |
3398 | */ | |
3399 | if (i < MAX_CTLR_ORIG) | |
564de74a | 3400 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 3401 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3402 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 3403 | printk(KERN_ERR |
7c832835 BH |
3404 | "cciss: Unable to get major number %d for %s " |
3405 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 3406 | goto clean1; |
7c832835 | 3407 | } else { |
1da177e4 LT |
3408 | if (i >= MAX_CTLR_ORIG) |
3409 | hba[i]->major = rc; | |
3410 | } | |
3411 | ||
3412 | /* make sure the board interrupts are off */ | |
3413 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
7c832835 | 3414 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
69ab3912 | 3415 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
1da177e4 | 3416 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
7c832835 | 3417 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
1da177e4 LT |
3418 | goto clean2; |
3419 | } | |
40aabb58 BH |
3420 | |
3421 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 BH |
3422 | hba[i]->devname, pdev->device, pci_name(pdev), |
3423 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); | |
3424 | ||
3425 | hba[i]->cmd_pool_bits = | |
f880632f | 3426 | kmalloc(((hba[i]->nr_cmds + BITS_PER_LONG - |
7c832835 BH |
3427 | 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL); |
3428 | hba[i]->cmd_pool = (CommandList_struct *) | |
3429 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3430 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
3431 | &(hba[i]->cmd_pool_dhandle)); |
3432 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
3433 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 3434 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
3435 | &(hba[i]->errinfo_pool_dhandle)); |
3436 | if ((hba[i]->cmd_pool_bits == NULL) | |
3437 | || (hba[i]->cmd_pool == NULL) | |
3438 | || (hba[i]->errinfo_pool == NULL)) { | |
3439 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
3440 | goto clean4; |
3441 | } | |
3da8b713 | 3442 | #ifdef CONFIG_CISS_SCSI_TAPE |
7c832835 BH |
3443 | hba[i]->scsi_rejects.complete = |
3444 | kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) * | |
f880632f | 3445 | (hba[i]->nr_cmds + 5), GFP_KERNEL); |
3da8b713 | 3446 | if (hba[i]->scsi_rejects.complete == NULL) { |
7c832835 | 3447 | printk(KERN_ERR "cciss: out of memory"); |
3da8b713 | 3448 | goto clean4; |
3449 | } | |
3450 | #endif | |
1da177e4 | 3451 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 3452 | |
7c832835 BH |
3453 | /* Initialize the pdev driver private data. |
3454 | have it point to hba[i]. */ | |
1da177e4 | 3455 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
3456 | /* command and error info recs zeroed out before |
3457 | they are used */ | |
3458 | memset(hba[i]->cmd_pool_bits, 0, | |
f880632f | 3459 | ((hba[i]->nr_cmds + BITS_PER_LONG - |
7c832835 | 3460 | 1) / BITS_PER_LONG) * sizeof(unsigned long)); |
1da177e4 | 3461 | |
7c832835 BH |
3462 | #ifdef CCISS_DEBUG |
3463 | printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n", i); | |
3464 | #endif /* CCISS_DEBUG */ | |
1da177e4 LT |
3465 | |
3466 | cciss_getgeometry(i); | |
3467 | ||
3468 | cciss_scsi_setup(i); | |
3469 | ||
3470 | /* Turn the interrupts on so we can service requests */ | |
3471 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
3472 | ||
3473 | cciss_procinit(i); | |
92c4231a MM |
3474 | |
3475 | hba[i]->cciss_max_sectors = 2048; | |
3476 | ||
d6dbf42e | 3477 | hba[i]->busy_initializing = 0; |
1da177e4 | 3478 | |
799202cb | 3479 | do { |
ad2b9312 MM |
3480 | drive_info_struct *drv = &(hba[i]->drv[j]); |
3481 | struct gendisk *disk = hba[i]->gendisk[j]; | |
165125e1 | 3482 | struct request_queue *q; |
799202cb MM |
3483 | |
3484 | /* Check if the disk was allocated already */ | |
3485 | if (!disk){ | |
3486 | hba[i]->gendisk[j] = alloc_disk(1 << NWD_SHIFT); | |
3487 | disk = hba[i]->gendisk[j]; | |
3488 | } | |
3489 | ||
3490 | /* Check that the disk was able to be allocated */ | |
3491 | if (!disk) { | |
3492 | printk(KERN_ERR "cciss: unable to allocate memory for disk %d\n", j); | |
3493 | goto clean4; | |
3494 | } | |
ad2b9312 MM |
3495 | |
3496 | q = blk_init_queue(do_cciss_request, &hba[i]->lock); | |
3497 | if (!q) { | |
3498 | printk(KERN_ERR | |
7c832835 BH |
3499 | "cciss: unable to allocate queue for disk %d\n", |
3500 | j); | |
799202cb | 3501 | goto clean4; |
ad2b9312 MM |
3502 | } |
3503 | drv->queue = q; | |
3504 | ||
a9925a06 JA |
3505 | blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask); |
3506 | ||
3507 | /* This is a hardware imposed limit. */ | |
3508 | blk_queue_max_hw_segments(q, MAXSGENTRIES); | |
1da177e4 | 3509 | |
a9925a06 JA |
3510 | /* This is a limit in the driver and could be eliminated. */ |
3511 | blk_queue_max_phys_segments(q, MAXSGENTRIES); | |
1da177e4 | 3512 | |
92c4231a | 3513 | blk_queue_max_sectors(q, hba[i]->cciss_max_sectors); |
1da177e4 | 3514 | |
a9925a06 | 3515 | blk_queue_softirq_done(q, cciss_softirq_done); |
1da177e4 | 3516 | |
ad2b9312 | 3517 | q->queuedata = hba[i]; |
1da177e4 | 3518 | sprintf(disk->disk_name, "cciss/c%dd%d", i, j); |
1da177e4 LT |
3519 | disk->major = hba[i]->major; |
3520 | disk->first_minor = j << NWD_SHIFT; | |
3521 | disk->fops = &cciss_fops; | |
ad2b9312 | 3522 | disk->queue = q; |
1da177e4 | 3523 | disk->private_data = drv; |
27c0ff86 | 3524 | disk->driverfs_dev = &pdev->dev; |
1da177e4 LT |
3525 | /* we must register the controller even if no disks exist */ |
3526 | /* this is for the online array utilities */ | |
7c832835 | 3527 | if (!drv->heads && j) |
1da177e4 | 3528 | continue; |
ad2b9312 | 3529 | blk_queue_hardsect_size(q, drv->block_size); |
1da177e4 | 3530 | set_capacity(disk, drv->nr_blocks); |
799202cb MM |
3531 | j++; |
3532 | } while (j <= hba[i]->highest_lun); | |
ad2b9312 | 3533 | |
e14ac670 | 3534 | /* Make sure all queue data is written out before */ |
3535 | /* interrupt handler, triggered by add_disk, */ | |
3536 | /* is allowed to start them. */ | |
3537 | wmb(); | |
3538 | ||
3539 | for (j = 0; j <= hba[i]->highest_lun; j++) | |
3540 | add_disk(hba[i]->gendisk[j]); | |
3541 | ||
e2019b58 | 3542 | return 1; |
1da177e4 | 3543 | |
7c832835 | 3544 | clean4: |
3da8b713 | 3545 | #ifdef CONFIG_CISS_SCSI_TAPE |
1acc0b0b | 3546 | kfree(hba[i]->scsi_rejects.complete); |
3da8b713 | 3547 | #endif |
6044ec88 | 3548 | kfree(hba[i]->cmd_pool_bits); |
7c832835 | 3549 | if (hba[i]->cmd_pool) |
1da177e4 | 3550 | pci_free_consistent(hba[i]->pdev, |
f880632f | 3551 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
3552 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
3553 | if (hba[i]->errinfo_pool) | |
1da177e4 | 3554 | pci_free_consistent(hba[i]->pdev, |
f880632f | 3555 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
3556 | hba[i]->errinfo_pool, |
3557 | hba[i]->errinfo_pool_dhandle); | |
fb86a35b | 3558 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
7c832835 | 3559 | clean2: |
1da177e4 | 3560 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 3561 | clean1: |
1f8ef380 | 3562 | hba[i]->busy_initializing = 0; |
799202cb MM |
3563 | /* cleanup any queues that may have been initialized */ |
3564 | for (j=0; j <= hba[i]->highest_lun; j++){ | |
3565 | drive_info_struct *drv = &(hba[i]->drv[j]); | |
3566 | if (drv->queue) | |
3567 | blk_cleanup_queue(drv->queue); | |
3568 | } | |
872225ca MM |
3569 | /* |
3570 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3571 | * Smart Array controllers that pci_enable_device does not undo | |
3572 | */ | |
799202cb | 3573 | pci_release_regions(pdev); |
799202cb | 3574 | pci_set_drvdata(pdev, NULL); |
61808c2b | 3575 | free_hba(i); |
e2019b58 | 3576 | return -1; |
1da177e4 LT |
3577 | } |
3578 | ||
e9ca75b5 | 3579 | static void cciss_shutdown(struct pci_dev *pdev) |
1da177e4 LT |
3580 | { |
3581 | ctlr_info_t *tmp_ptr; | |
e9ca75b5 | 3582 | int i; |
1da177e4 | 3583 | char flush_buf[4]; |
7c832835 | 3584 | int return_code; |
1da177e4 | 3585 | |
e9ca75b5 GB |
3586 | tmp_ptr = pci_get_drvdata(pdev); |
3587 | if (tmp_ptr == NULL) | |
3588 | return; | |
3589 | i = tmp_ptr->ctlr; | |
3590 | if (hba[i] == NULL) | |
3591 | return; | |
3592 | ||
3593 | /* Turn board interrupts off and send the flush cache command */ | |
3594 | /* sendcmd will turn off interrupt, and send the flush... | |
3595 | * To write all data in the battery backed cache to disks */ | |
3596 | memset(flush_buf, 0, 4); | |
3597 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL, | |
3598 | TYPE_CMD); | |
3599 | if (return_code == IO_OK) { | |
3600 | printk(KERN_INFO "Completed flushing cache on controller %d\n", i); | |
3601 | } else { | |
3602 | printk(KERN_WARNING "Error flushing cache on controller %d\n", i); | |
3603 | } | |
3604 | free_irq(hba[i]->intr[2], hba[i]); | |
3605 | } | |
3606 | ||
3607 | static void __devexit cciss_remove_one(struct pci_dev *pdev) | |
3608 | { | |
3609 | ctlr_info_t *tmp_ptr; | |
3610 | int i, j; | |
3611 | ||
7c832835 BH |
3612 | if (pci_get_drvdata(pdev) == NULL) { |
3613 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
3614 | return; |
3615 | } | |
3616 | tmp_ptr = pci_get_drvdata(pdev); | |
3617 | i = tmp_ptr->ctlr; | |
7c832835 | 3618 | if (hba[i] == NULL) { |
1da177e4 | 3619 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 3620 | "already be removed \n"); |
1da177e4 LT |
3621 | return; |
3622 | } | |
b6550777 BH |
3623 | |
3624 | remove_proc_entry(hba[i]->devname, proc_cciss); | |
3625 | unregister_blkdev(hba[i]->major, hba[i]->devname); | |
3626 | ||
3627 | /* remove it from the disk list */ | |
3628 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
3629 | struct gendisk *disk = hba[i]->gendisk[j]; | |
3630 | if (disk) { | |
165125e1 | 3631 | struct request_queue *q = disk->queue; |
b6550777 BH |
3632 | |
3633 | if (disk->flags & GENHD_FL_UP) | |
3634 | del_gendisk(disk); | |
3635 | if (q) | |
3636 | blk_cleanup_queue(q); | |
3637 | } | |
3638 | } | |
3639 | ||
3640 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ | |
3641 | ||
e9ca75b5 | 3642 | cciss_shutdown(pdev); |
fb86a35b MM |
3643 | |
3644 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3645 | if (hba[i]->msix_vector) |
3646 | pci_disable_msix(hba[i]->pdev); | |
3647 | else if (hba[i]->msi_vector) | |
3648 | pci_disable_msi(hba[i]->pdev); | |
3649 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 3650 | |
1da177e4 | 3651 | iounmap(hba[i]->vaddr); |
1da177e4 | 3652 | |
f880632f | 3653 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
1da177e4 | 3654 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
f880632f | 3655 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 | 3656 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
1da177e4 | 3657 | kfree(hba[i]->cmd_pool_bits); |
3da8b713 | 3658 | #ifdef CONFIG_CISS_SCSI_TAPE |
3659 | kfree(hba[i]->scsi_rejects.complete); | |
3660 | #endif | |
872225ca MM |
3661 | /* |
3662 | * Deliberately omit pci_disable_device(): it does something nasty to | |
3663 | * Smart Array controllers that pci_enable_device does not undo | |
3664 | */ | |
7c832835 | 3665 | pci_release_regions(pdev); |
4e570309 | 3666 | pci_set_drvdata(pdev, NULL); |
1da177e4 | 3667 | free_hba(i); |
7c832835 | 3668 | } |
1da177e4 LT |
3669 | |
3670 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
3671 | .name = "cciss", |
3672 | .probe = cciss_init_one, | |
3673 | .remove = __devexit_p(cciss_remove_one), | |
3674 | .id_table = cciss_pci_device_id, /* id_table */ | |
e9ca75b5 | 3675 | .shutdown = cciss_shutdown, |
1da177e4 LT |
3676 | }; |
3677 | ||
3678 | /* | |
3679 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 3680 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
3681 | */ |
3682 | static int __init cciss_init(void) | |
3683 | { | |
3684 | printk(KERN_INFO DRIVER_NAME "\n"); | |
3685 | ||
3686 | /* Register for our PCI devices */ | |
9bfab8ce | 3687 | return pci_register_driver(&cciss_pci_driver); |
1da177e4 LT |
3688 | } |
3689 | ||
3690 | static void __exit cciss_cleanup(void) | |
3691 | { | |
3692 | int i; | |
3693 | ||
3694 | pci_unregister_driver(&cciss_pci_driver); | |
3695 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
3696 | for (i = 0; i < MAX_CTLR; i++) { |
3697 | if (hba[i] != NULL) { | |
1da177e4 | 3698 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 3699 | " controller %d\n", i); |
1da177e4 LT |
3700 | cciss_remove_one(hba[i]->pdev); |
3701 | } | |
3702 | } | |
3703 | remove_proc_entry("cciss", proc_root_driver); | |
3704 | } | |
3705 | ||
33079b21 MM |
3706 | static void fail_all_cmds(unsigned long ctlr) |
3707 | { | |
3708 | /* If we get here, the board is apparently dead. */ | |
3709 | ctlr_info_t *h = hba[ctlr]; | |
3710 | CommandList_struct *c; | |
3711 | unsigned long flags; | |
3712 | ||
3713 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); | |
7c832835 | 3714 | h->alive = 0; /* the controller apparently died... */ |
33079b21 MM |
3715 | |
3716 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
3717 | ||
7c832835 | 3718 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
33079b21 MM |
3719 | |
3720 | /* move everything off the request queue onto the completed queue */ | |
7c832835 | 3721 | while ((c = h->reqQ) != NULL) { |
33079b21 MM |
3722 | removeQ(&(h->reqQ), c); |
3723 | h->Qdepth--; | |
7c832835 | 3724 | addQ(&(h->cmpQ), c); |
33079b21 MM |
3725 | } |
3726 | ||
3727 | /* Now, fail everything on the completed queue with a HW error */ | |
7c832835 | 3728 | while ((c = h->cmpQ) != NULL) { |
33079b21 MM |
3729 | removeQ(&h->cmpQ, c); |
3730 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
3731 | if (c->cmd_type == CMD_RWREQ) { | |
3732 | complete_command(h, c, 0); | |
3733 | } else if (c->cmd_type == CMD_IOCTL_PEND) | |
3734 | complete(c->waiting); | |
3735 | #ifdef CONFIG_CISS_SCSI_TAPE | |
7c832835 BH |
3736 | else if (c->cmd_type == CMD_SCSI) |
3737 | complete_scsi_command(c, 0, 0); | |
33079b21 MM |
3738 | #endif |
3739 | } | |
3740 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
3741 | return; | |
3742 | } | |
3743 | ||
1da177e4 LT |
3744 | module_init(cciss_init); |
3745 | module_exit(cciss_cleanup); |