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cciss: fix schedule_timeout() parameters
[deliverable/linux.git] / drivers / block / cciss.c
CommitLineData
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>
405f5571 29#include <linux/smp_lock.h>
1da177e4
LT		 30#include <linux/delay.h>
31#include <linux/major.h>
32#include <linux/fs.h>
33#include <linux/bio.h>
34#include <linux/blkpg.h>
35#include <linux/timer.h>
36#include <linux/proc_fs.h>
89b6e743 37#include <linux/seq_file.h>
7c832835 38#include <linux/init.h>
4d761609 39#include <linux/jiffies.h>
1da177e4
LT		 40#include <linux/hdreg.h>
41#include <linux/spinlock.h>
42#include <linux/compat.h>
43#include <asm/uaccess.h>
44#include <asm/io.h>
45
eb0df996 46#include <linux/dma-mapping.h>
1da177e4
LT		 47#include <linux/blkdev.h>
48#include <linux/genhd.h>
49#include <linux/completion.h>
d5d3b736 50#include <scsi/scsi.h>
03bbfee5
MMOD		 51#include <scsi/sg.h>
52#include <scsi/scsi_ioctl.h>
53#include <linux/cdrom.h>
231bc2a2 54#include <linux/scatterlist.h>
0a9279cc 55#include <linux/kthread.h>
1da177e4
LT		 56
57#define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
24aac480
MM		 58#define DRIVER_NAME "HP CISS Driver (v 3.6.20)"
59#define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 20)
1da177e4
LT		 60
61/* Embedded module documentation macros - see modules.h */
62MODULE_AUTHOR("Hewlett-Packard Company");
24aac480 63MODULE_DESCRIPTION("Driver for HP Smart Array Controllers");
1da177e4 64MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
24aac480
MM		 65 " SA6i P600 P800 P400 P400i E200 E200i E500 P700m"
66 " Smart Array G2 Series SAS/SATA Controllers");
67MODULE_VERSION("3.6.20");
1da177e4
LT		 68MODULE_LICENSE("GPL");
69
70#include "cciss_cmd.h"
71#include "cciss.h"
72#include <linux/cciss_ioctl.h>
73
74/* define the PCI info for the cards we can control */
75static const struct pci_device_id cciss_pci_device_id[] = {
f82ccdb9
BH		 76 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070},
77 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080},
78 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082},
79 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083},
80 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091},
81 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A},
82 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B},
83 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C},
84 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D},
85 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225},
86 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223},
87 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234},
88 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235},
89 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211},
90 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212},
91 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213},
92 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214},
93 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215},
de923916 94 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237},
9cff3b38 95 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D},
24aac480
MM		 96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
98 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
99 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
100 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
77ca7286
MM		 101 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A},
102 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B},
4ff9a9a4
MM		 103 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
104 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
1da177e4
LT		 105 {0,}
106};
7c832835 107
1da177e4
LT		 108MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
109
1da177e4
LT		 110/* board_id = Subsystem Device ID & Vendor ID
111 * product = Marketing Name for the board
7c832835 112 * access = Address of the struct of function pointers
1da177e4
LT		 113 */
114static struct board_type products[] = {
49153998
MM		 115 {0x40700E11, "Smart Array 5300", &SA5_access},
116 {0x40800E11, "Smart Array 5i", &SA5B_access},
117 {0x40820E11, "Smart Array 532", &SA5B_access},
118 {0x40830E11, "Smart Array 5312", &SA5B_access},
119 {0x409A0E11, "Smart Array 641", &SA5_access},
120 {0x409B0E11, "Smart Array 642", &SA5_access},
121 {0x409C0E11, "Smart Array 6400", &SA5_access},
122 {0x409D0E11, "Smart Array 6400 EM", &SA5_access},
123 {0x40910E11, "Smart Array 6i", &SA5_access},
124 {0x3225103C, "Smart Array P600", &SA5_access},
125 {0x3223103C, "Smart Array P800", &SA5_access},
126 {0x3234103C, "Smart Array P400", &SA5_access},
127 {0x3235103C, "Smart Array P400i", &SA5_access},
128 {0x3211103C, "Smart Array E200i", &SA5_access},
129 {0x3212103C, "Smart Array E200", &SA5_access},
130 {0x3213103C, "Smart Array E200i", &SA5_access},
131 {0x3214103C, "Smart Array E200i", &SA5_access},
132 {0x3215103C, "Smart Array E200i", &SA5_access},
133 {0x3237103C, "Smart Array E500", &SA5_access},
134 {0x323D103C, "Smart Array P700m", &SA5_access},
135 {0x3241103C, "Smart Array P212", &SA5_access},
136 {0x3243103C, "Smart Array P410", &SA5_access},
137 {0x3245103C, "Smart Array P410i", &SA5_access},
138 {0x3247103C, "Smart Array P411", &SA5_access},
139 {0x3249103C, "Smart Array P812", &SA5_access},
77ca7286
MM		 140 {0x324A103C, "Smart Array P712m", &SA5_access},
141 {0x324B103C, "Smart Array P711m", &SA5_access},
49153998 142 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
1da177e4
LT		 143};
144
d14c4ab5 145/* How long to wait (in milliseconds) for board to go into simple mode */
7c832835 146#define MAX_CONFIG_WAIT 30000
1da177e4
LT		 147#define MAX_IOCTL_CONFIG_WAIT 1000
148
149/*define how many times we will try a command because of bus resets */
150#define MAX_CMD_RETRIES 3
151
1da177e4
LT		 152#define MAX_CTLR 32
153
154/* Originally cciss driver only supports 8 major numbers */
155#define MAX_CTLR_ORIG 8
156
1da177e4
LT		 157static ctlr_info_t *hba[MAX_CTLR];
158
165125e1 159static void do_cciss_request(struct request_queue *q);
7d12e780 160static irqreturn_t do_cciss_intr(int irq, void *dev_id);
ef7822c2
AV		 161static int cciss_open(struct block_device *bdev, fmode_t mode);
162static int cciss_release(struct gendisk *disk, fmode_t mode);
163static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
7c832835 164 unsigned int cmd, unsigned long arg);
a885c8c4 165static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo);
1da177e4 166
1da177e4 167static int cciss_revalidate(struct gendisk *disk);
6ae5ce8e 168static int rebuild_lun_table(ctlr_info_t *h, int first_time);
a0ea8622 169static int deregister_disk(ctlr_info_t *h, int drv_index,
7c832835 170 int clear_all);
1da177e4 171
00988a35
MMOD		 172static void cciss_read_capacity(int ctlr, int logvol, int withirq,
173 sector_t *total_size, unsigned int *block_size);
174static void cciss_read_capacity_16(int ctlr, int logvol, int withirq,
175 sector_t *total_size, unsigned int *block_size);
176static void cciss_geometry_inquiry(int ctlr, int logvol,
177 int withirq, sector_t total_size,
178 unsigned int block_size, InquiryData_struct *inq_buff,
7c832835 179 drive_info_struct *drv);
7c832835
BH		 180static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *,
181 __u32);
182static void start_io(ctlr_info_t *h);
183static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size,
7c832835
BH		 184 __u8 page_code, unsigned char *scsi3addr, int cmd_type);
185static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
b57695fe 186 __u8 page_code, unsigned char scsi3addr[],
187 int cmd_type);
85cc61ae 188static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c,
189 int attempt_retry);
190static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c);
1da177e4 191
33079b21 192static void fail_all_cmds(unsigned long ctlr);
0a9279cc
MM		 193static int scan_thread(void *data);
194static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c);
33079b21 195
1da177e4 196#ifdef CONFIG_PROC_FS
1da177e4
LT		 197static void cciss_procinit(int i);
198#else
7c832835
BH		 199static void cciss_procinit(int i)
200{
201}
202#endif /* CONFIG_PROC_FS */
1da177e4
LT		 203
204#ifdef CONFIG_COMPAT
ef7822c2
AV		 205static int cciss_compat_ioctl(struct block_device *, fmode_t,
206 unsigned, unsigned long);
1da177e4
LT		 207#endif
208
83d5cde4 209static const struct block_device_operations cciss_fops = {
7c832835 210 .owner = THIS_MODULE,
ef7822c2
AV		 211 .open = cciss_open,
212 .release = cciss_release,
213 .locked_ioctl = cciss_ioctl,
7c832835 214 .getgeo = cciss_getgeo,
1da177e4 215#ifdef CONFIG_COMPAT
ef7822c2 216 .compat_ioctl = cciss_compat_ioctl,
1da177e4 217#endif
7c832835 218 .revalidate_disk = cciss_revalidate,
1da177e4
LT		 219};
220
221/*
222 * Enqueuing and dequeuing functions for cmdlists.
223 */
8a3173de 224static inline void addQ(struct hlist_head *list, CommandList_struct *c)
1da177e4 225{
8a3173de 226 hlist_add_head(&c->list, list);
1da177e4
LT		 227}
228
8a3173de 229static inline void removeQ(CommandList_struct *c)
1da177e4 230{
b59e64d0
HR		 231 /*
232 * After kexec/dump some commands might still
233 * be in flight, which the firmware will try
234 * to complete. Resetting the firmware doesn't work
235 * with old fw revisions, so we have to mark
236 * them off as 'stale' to prevent the driver from
237 * falling over.
238 */
239 if (WARN_ON(hlist_unhashed(&c->list))) {
240 c->cmd_type = CMD_MSG_STALE;
8a3173de 241 return;
b59e64d0 242 }
8a3173de
JA		 243
244 hlist_del_init(&c->list);
1da177e4
LT		 245}
246
247#include "cciss_scsi.c" /* For SCSI tape support */
248
0f5486ec
RD		 249#define RAID_UNKNOWN 6
250
1da177e4
LT		 251#ifdef CONFIG_PROC_FS
252
253/*
254 * Report information about this controller.
255 */
256#define ENG_GIG 1000000000
257#define ENG_GIG_FACTOR (ENG_GIG/512)
89b6e743 258#define ENGAGE_SCSI "engage scsi"
7c832835
BH		 259static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
260 "UNKNOWN"
261};
1da177e4
LT		 262
263static struct proc_dir_entry *proc_cciss;
264
89b6e743 265static void cciss_seq_show_header(struct seq_file *seq)
1da177e4 266{
89b6e743
MM		 267 ctlr_info_t *h = seq->private;
268
269 seq_printf(seq, "%s: HP %s Controller\n"
270 "Board ID: 0x%08lx\n"
271 "Firmware Version: %c%c%c%c\n"
272 "IRQ: %d\n"
273 "Logical drives: %d\n"
274 "Current Q depth: %d\n"
275 "Current # commands on controller: %d\n"
276 "Max Q depth since init: %d\n"
277 "Max # commands on controller since init: %d\n"
278 "Max SG entries since init: %d\n",
279 h->devname,
280 h->product_name,
281 (unsigned long)h->board_id,
282 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2],
283 h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT],
284 h->num_luns,
285 h->Qdepth, h->commands_outstanding,
286 h->maxQsinceinit, h->max_outstanding, h->maxSG);
287
288#ifdef CONFIG_CISS_SCSI_TAPE
289 cciss_seq_tape_report(seq, h->ctlr);
290#endif /* CONFIG_CISS_SCSI_TAPE */
291}
1da177e4 292
89b6e743
MM		 293static void *cciss_seq_start(struct seq_file *seq, loff_t *pos)
294{
295 ctlr_info_t *h = seq->private;
296 unsigned ctlr = h->ctlr;
297 unsigned long flags;
1da177e4
LT		 298
299 /* prevent displaying bogus info during configuration
300 * or deconfiguration of a logical volume
301 */
302 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
303 if (h->busy_configuring) {
304 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
89b6e743 305 return ERR_PTR(-EBUSY);
1da177e4
LT		 306 }
307 h->busy_configuring = 1;
308 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
309
89b6e743
MM		 310 if (*pos == 0)
311 cciss_seq_show_header(seq);
312
313 return pos;
314}
315
316static int cciss_seq_show(struct seq_file *seq, void *v)
317{
318 sector_t vol_sz, vol_sz_frac;
319 ctlr_info_t *h = seq->private;
320 unsigned ctlr = h->ctlr;
321 loff_t *pos = v;
322 drive_info_struct *drv = &h->drv[*pos];
323
324 if (*pos > h->highest_lun)
325 return 0;
326
327 if (drv->heads == 0)
328 return 0;
329
330 vol_sz = drv->nr_blocks;
331 vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
332 vol_sz_frac *= 100;
333 sector_div(vol_sz_frac, ENG_GIG_FACTOR);
334
335 if (drv->raid_level > 5)
336 drv->raid_level = RAID_UNKNOWN;
337 seq_printf(seq, "cciss/c%dd%d:"
338 "\t%4u.%02uGB\tRAID %s\n",
339 ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac,
340 raid_label[drv->raid_level]);
341 return 0;
342}
343
344static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos)
345{
346 ctlr_info_t *h = seq->private;
347
348 if (*pos > h->highest_lun)
349 return NULL;
350 *pos += 1;
351
352 return pos;
353}
354
355static void cciss_seq_stop(struct seq_file *seq, void *v)
356{
357 ctlr_info_t *h = seq->private;
358
359 /* Only reset h->busy_configuring if we succeeded in setting
360 * it during cciss_seq_start. */
361 if (v == ERR_PTR(-EBUSY))
362 return;
7c832835 363
1da177e4 364 h->busy_configuring = 0;
1da177e4
LT		 365}
366
88e9d34c 367static const struct seq_operations cciss_seq_ops = {
89b6e743
MM		 368 .start = cciss_seq_start,
369 .show = cciss_seq_show,
370 .next = cciss_seq_next,
371 .stop = cciss_seq_stop,
372};
373
374static int cciss_seq_open(struct inode *inode, struct file *file)
375{
376 int ret = seq_open(file, &cciss_seq_ops);
377 struct seq_file *seq = file->private_data;
378
379 if (!ret)
380 seq->private = PDE(inode)->data;
381
382 return ret;
383}
384
385static ssize_t
386cciss_proc_write(struct file *file, const char __user *buf,
387 size_t length, loff_t *ppos)
1da177e4 388{
89b6e743
MM		 389 int err;
390 char *buffer;
391
392#ifndef CONFIG_CISS_SCSI_TAPE
393 return -EINVAL;
1da177e4
LT		 394#endif
395
89b6e743 396 if (!buf || length > PAGE_SIZE - 1)
7c832835 397 return -EINVAL;
89b6e743
MM		 398
399 buffer = (char *)__get_free_page(GFP_KERNEL);
400 if (!buffer)
401 return -ENOMEM;
402
403 err = -EFAULT;
404 if (copy_from_user(buffer, buf, length))
405 goto out;
406 buffer[length] = '\0';
407
408#ifdef CONFIG_CISS_SCSI_TAPE
409 if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) {
410 struct seq_file *seq = file->private_data;
411 ctlr_info_t *h = seq->private;
412 int rc;
413
7c832835
BH		 414 rc = cciss_engage_scsi(h->ctlr);
415 if (rc != 0)
89b6e743
MM		 416 err = -rc;
417 else
418 err = length;
419 } else
420#endif /* CONFIG_CISS_SCSI_TAPE */
421 err = -EINVAL;
7c832835
BH		 422 /* might be nice to have "disengage" too, but it's not
423 safely possible. (only 1 module use count, lock issues.) */
89b6e743
MM		 424
425out:
426 free_page((unsigned long)buffer);
427 return err;
1da177e4
LT		 428}
429
89b6e743
MM		 430static struct file_operations cciss_proc_fops = {
431 .owner = THIS_MODULE,
432 .open = cciss_seq_open,
433 .read = seq_read,
434 .llseek = seq_lseek,
435 .release = seq_release,
436 .write = cciss_proc_write,
437};
438
1da177e4
LT		 439static void __devinit cciss_procinit(int i)
440{
441 struct proc_dir_entry *pde;
442
89b6e743 443 if (proc_cciss == NULL)
928b4d8c 444 proc_cciss = proc_mkdir("driver/cciss", NULL);
89b6e743
MM		 445 if (!proc_cciss)
446 return;
3dfcf9c4 447 pde = proc_create_data(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP |
89b6e743 448 S_IROTH, proc_cciss,
3dfcf9c4 449 &cciss_proc_fops, hba[i]);
1da177e4 450}
7c832835 451#endif /* CONFIG_PROC_FS */
1da177e4 452
7fe06326
AP		 453#define MAX_PRODUCT_NAME_LEN 19
454
455#define to_hba(n) container_of(n, struct ctlr_info, dev)
456#define to_drv(n) container_of(n, drive_info_struct, dev)
457
458static struct device_type cciss_host_type = {
459 .name = "cciss_host",
460};
461
462static ssize_t dev_show_unique_id(struct device *dev,
463 struct device_attribute *attr,
464 char *buf)
465{
466 drive_info_struct *drv = to_drv(dev);
467 struct ctlr_info *h = to_hba(drv->dev.parent);
468 __u8 sn[16];
469 unsigned long flags;
470 int ret = 0;
471
472 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
473 if (h->busy_configuring)
474 ret = -EBUSY;
475 else
476 memcpy(sn, drv->serial_no, sizeof(sn));
477 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
478
479 if (ret)
480 return ret;
481 else
482 return snprintf(buf, 16 * 2 + 2,
483 "%02X%02X%02X%02X%02X%02X%02X%02X"
484 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
485 sn[0], sn[1], sn[2], sn[3],
486 sn[4], sn[5], sn[6], sn[7],
487 sn[8], sn[9], sn[10], sn[11],
488 sn[12], sn[13], sn[14], sn[15]);
489}
490DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL);
491
492static ssize_t dev_show_vendor(struct device *dev,
493 struct device_attribute *attr,
494 char *buf)
495{
496 drive_info_struct *drv = to_drv(dev);
497 struct ctlr_info *h = to_hba(drv->dev.parent);
498 char vendor[VENDOR_LEN + 1];
499 unsigned long flags;
500 int ret = 0;
501
502 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
503 if (h->busy_configuring)
504 ret = -EBUSY;
505 else
506 memcpy(vendor, drv->vendor, VENDOR_LEN + 1);
507 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
508
509 if (ret)
510 return ret;
511 else
512 return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor);
513}
514DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL);
515
516static ssize_t dev_show_model(struct device *dev,
517 struct device_attribute *attr,
518 char *buf)
519{
520 drive_info_struct *drv = to_drv(dev);
521 struct ctlr_info *h = to_hba(drv->dev.parent);
522 char model[MODEL_LEN + 1];
523 unsigned long flags;
524 int ret = 0;
525
526 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
527 if (h->busy_configuring)
528 ret = -EBUSY;
529 else
530 memcpy(model, drv->model, MODEL_LEN + 1);
531 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
532
533 if (ret)
534 return ret;
535 else
536 return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model);
537}
538DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL);
539
540static ssize_t dev_show_rev(struct device *dev,
541 struct device_attribute *attr,
542 char *buf)
543{
544 drive_info_struct *drv = to_drv(dev);
545 struct ctlr_info *h = to_hba(drv->dev.parent);
546 char rev[REV_LEN + 1];
547 unsigned long flags;
548 int ret = 0;
549
550 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
551 if (h->busy_configuring)
552 ret = -EBUSY;
553 else
554 memcpy(rev, drv->rev, REV_LEN + 1);
555 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
556
557 if (ret)
558 return ret;
559 else
560 return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev);
561}
562DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL);
563
564static struct attribute *cciss_dev_attrs[] = {
565 &dev_attr_unique_id.attr,
566 &dev_attr_model.attr,
567 &dev_attr_vendor.attr,
568 &dev_attr_rev.attr,
569 NULL
570};
571
572static struct attribute_group cciss_dev_attr_group = {
573 .attrs = cciss_dev_attrs,
574};
575
a4dbd674 576static const struct attribute_group *cciss_dev_attr_groups[] = {
7fe06326
AP		 577 &cciss_dev_attr_group,
578 NULL
579};
580
581static struct device_type cciss_dev_type = {
582 .name = "cciss_device",
583 .groups = cciss_dev_attr_groups,
584};
585
586static struct bus_type cciss_bus_type = {
587 .name = "cciss",
588};
589
590
591/*
592 * Initialize sysfs entry for each controller. This sets up and registers
593 * the 'cciss#' directory for each individual controller under
594 * /sys/bus/pci/devices/<dev>/.
595 */
596static int cciss_create_hba_sysfs_entry(struct ctlr_info *h)
597{
598 device_initialize(&h->dev);
599 h->dev.type = &cciss_host_type;
600 h->dev.bus = &cciss_bus_type;
601 dev_set_name(&h->dev, "%s", h->devname);
602 h->dev.parent = &h->pdev->dev;
603
604 return device_add(&h->dev);
605}
606
607/*
608 * Remove sysfs entries for an hba.
609 */
610static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h)
611{
612 device_del(&h->dev);
613}
614
615/*
616 * Initialize sysfs for each logical drive. This sets up and registers
617 * the 'c#d#' directory for each individual logical drive under
618 * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from
619 * /sys/block/cciss!c#d# to this entry.
620 */
621static int cciss_create_ld_sysfs_entry(struct ctlr_info *h,
622 drive_info_struct *drv,
623 int drv_index)
624{
625 device_initialize(&drv->dev);
626 drv->dev.type = &cciss_dev_type;
627 drv->dev.bus = &cciss_bus_type;
628 dev_set_name(&drv->dev, "c%dd%d", h->ctlr, drv_index);
629 drv->dev.parent = &h->dev;
630 return device_add(&drv->dev);
631}
632
633/*
634 * Remove sysfs entries for a logical drive.
635 */
636static void cciss_destroy_ld_sysfs_entry(drive_info_struct *drv)
637{
638 device_del(&drv->dev);
639}
640
7c832835
BH		 641/*
642 * For operations that cannot sleep, a command block is allocated at init,
1da177e4 643 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
7c832835
BH		 644 * which ones are free or in use. For operations that can wait for kmalloc
645 * to possible sleep, this routine can be called with get_from_pool set to 0.
646 * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
647 */
648static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool)
1da177e4
LT		 649{
650 CommandList_struct *c;
7c832835 651 int i;
1da177e4
LT		 652 u64bit temp64;
653 dma_addr_t cmd_dma_handle, err_dma_handle;
654
7c832835
BH		 655 if (!get_from_pool) {
656 c = (CommandList_struct *) pci_alloc_consistent(h->pdev,
657 sizeof(CommandList_struct), &cmd_dma_handle);
658 if (c == NULL)
659 return NULL;
1da177e4
LT		 660 memset(c, 0, sizeof(CommandList_struct));
661
33079b21
MM		 662 c->cmdindex = -1;
663
7c832835
BH		 664 c->err_info = (ErrorInfo_struct *)
665 pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct),
666 &err_dma_handle);
667
668 if (c->err_info == NULL) {
669 pci_free_consistent(h->pdev,
1da177e4
LT		 670 sizeof(CommandList_struct), c, cmd_dma_handle);
671 return NULL;
672 }
673 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
7c832835
BH		 674 } else { /* get it out of the controllers pool */
675
676 do {
f880632f
MM		 677 i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds);
678 if (i == h->nr_cmds)
7c832835
BH		 679 return NULL;
680 } while (test_and_set_bit
681 (i & (BITS_PER_LONG - 1),
682 h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0);
1da177e4
LT		 683#ifdef CCISS_DEBUG
684 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
685#endif
7c832835 686 c = h->cmd_pool + i;
1da177e4 687 memset(c, 0, sizeof(CommandList_struct));
7c832835
BH		 688 cmd_dma_handle = h->cmd_pool_dhandle
689 + i * sizeof(CommandList_struct);
1da177e4
LT		 690 c->err_info = h->errinfo_pool + i;
691 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
7c832835
BH		 692 err_dma_handle = h->errinfo_pool_dhandle
693 + i * sizeof(ErrorInfo_struct);
694 h->nr_allocs++;
33079b21
MM		 695
696 c->cmdindex = i;
7c832835 697 }
1da177e4 698
8a3173de 699 INIT_HLIST_NODE(&c->list);
1da177e4 700 c->busaddr = (__u32) cmd_dma_handle;
7c832835 701 temp64.val = (__u64) err_dma_handle;
1da177e4
LT		 702 c->ErrDesc.Addr.lower = temp64.val32.lower;
703 c->ErrDesc.Addr.upper = temp64.val32.upper;
704 c->ErrDesc.Len = sizeof(ErrorInfo_struct);
1da177e4 705
7c832835
BH		 706 c->ctlr = h->ctlr;
707 return c;
1da177e4
LT		 708}
709
7c832835
BH		 710/*
711 * Frees a command block that was previously allocated with cmd_alloc().
1da177e4
LT		 712 */
713static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
714{
715 int i;
716 u64bit temp64;
717
7c832835 718 if (!got_from_pool) {
1da177e4
LT		 719 temp64.val32.lower = c->ErrDesc.Addr.lower;
720 temp64.val32.upper = c->ErrDesc.Addr.upper;
7c832835
BH		 721 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
722 c->err_info, (dma_addr_t) temp64.val);
723 pci_free_consistent(h->pdev, sizeof(CommandList_struct),
724 c, (dma_addr_t) c->busaddr);
725 } else {
1da177e4 726 i = c - h->cmd_pool;
7c832835
BH		 727 clear_bit(i & (BITS_PER_LONG - 1),
728 h->cmd_pool_bits + (i / BITS_PER_LONG));
729 h->nr_frees++;
730 }
1da177e4
LT		 731}
732
733static inline ctlr_info_t *get_host(struct gendisk *disk)
734{
7c832835 735 return disk->queue->queuedata;
1da177e4
LT		 736}
737
738static inline drive_info_struct *get_drv(struct gendisk *disk)
739{
740 return disk->private_data;
741}
742
743/*
744 * Open. Make sure the device is really there.
745 */
ef7822c2 746static int cciss_open(struct block_device *bdev, fmode_t mode)
1da177e4 747{
ef7822c2
AV		 748 ctlr_info_t *host = get_host(bdev->bd_disk);
749 drive_info_struct *drv = get_drv(bdev->bd_disk);
1da177e4
LT		 750
751#ifdef CCISS_DEBUG
ef7822c2 752 printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name);
7c832835 753#endif /* CCISS_DEBUG */
1da177e4 754
ddd47442
MM		 755 if (host->busy_initializing || drv->busy_configuring)
756 return -EBUSY;
1da177e4
LT		 757 /*
758 * Root is allowed to open raw volume zero even if it's not configured
759 * so array config can still work. Root is also allowed to open any
760 * volume that has a LUN ID, so it can issue IOCTL to reread the
761 * disk information. I don't think I really like this
762 * but I'm already using way to many device nodes to claim another one
763 * for "raw controller".
764 */
7a06f789 765 if (drv->heads == 0) {
ef7822c2 766 if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */
1da177e4 767 /* if not node 0 make sure it is a partition = 0 */
ef7822c2 768 if (MINOR(bdev->bd_dev) & 0x0f) {
7c832835 769 return -ENXIO;
1da177e4
LT		 770 /* if it is, make sure we have a LUN ID */
771 } else if (drv->LunID == 0) {
772 return -ENXIO;
773 }
774 }
775 if (!capable(CAP_SYS_ADMIN))
776 return -EPERM;
777 }
778 drv->usage_count++;
779 host->usage_count++;
780 return 0;
781}
7c832835 782
1da177e4
LT		 783/*
784 * Close. Sync first.
785 */
ef7822c2 786static int cciss_release(struct gendisk *disk, fmode_t mode)
1da177e4 787{
ef7822c2
AV		 788 ctlr_info_t *host = get_host(disk);
789 drive_info_struct *drv = get_drv(disk);
1da177e4
LT		 790
791#ifdef CCISS_DEBUG
ef7822c2 792 printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name);
7c832835 793#endif /* CCISS_DEBUG */
1da177e4
LT		 794
795 drv->usage_count--;
796 host->usage_count--;
797 return 0;
798}
799
800#ifdef CONFIG_COMPAT
801
ef7822c2
AV		 802static int do_ioctl(struct block_device *bdev, fmode_t mode,
803 unsigned cmd, unsigned long arg)
1da177e4
LT		 804{
805 int ret;
806 lock_kernel();
ef7822c2 807 ret = cciss_ioctl(bdev, mode, cmd, arg);
1da177e4
LT		 808 unlock_kernel();
809 return ret;
810}
811
ef7822c2
AV		 812static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode,
813 unsigned cmd, unsigned long arg);
814static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode,
815 unsigned cmd, unsigned long arg);
1da177e4 816
ef7822c2
AV		 817static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode,
818 unsigned cmd, unsigned long arg)
1da177e4
LT		 819{
820 switch (cmd) {
821 case CCISS_GETPCIINFO:
822 case CCISS_GETINTINFO:
823 case CCISS_SETINTINFO:
824 case CCISS_GETNODENAME:
825 case CCISS_SETNODENAME:
826 case CCISS_GETHEARTBEAT:
827 case CCISS_GETBUSTYPES:
828 case CCISS_GETFIRMVER:
829 case CCISS_GETDRIVVER:
830 case CCISS_REVALIDVOLS:
831 case CCISS_DEREGDISK:
832 case CCISS_REGNEWDISK:
833 case CCISS_REGNEWD:
834 case CCISS_RESCANDISK:
835 case CCISS_GETLUNINFO:
ef7822c2 836 return do_ioctl(bdev, mode, cmd, arg);
1da177e4
LT		 837
838 case CCISS_PASSTHRU32:
ef7822c2 839 return cciss_ioctl32_passthru(bdev, mode, cmd, arg);
1da177e4 840 case CCISS_BIG_PASSTHRU32:
ef7822c2 841 return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg);
1da177e4
LT		 842
843 default:
844 return -ENOIOCTLCMD;
845 }
846}
847
ef7822c2
AV		 848static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode,
849 unsigned cmd, unsigned long arg)
1da177e4
LT		 850{
851 IOCTL32_Command_struct __user *arg32 =
7c832835 852 (IOCTL32_Command_struct __user *) arg;
1da177e4
LT		 853 IOCTL_Command_struct arg64;
854 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
855 int err;
856 u32 cp;
857
858 err = 0;
7c832835
BH		 859 err |=
860 copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
861 sizeof(arg64.LUN_info));
862 err |=
863 copy_from_user(&arg64.Request, &arg32->Request,
864 sizeof(arg64.Request));
865 err |=
866 copy_from_user(&arg64.error_info, &arg32->error_info,
867 sizeof(arg64.error_info));
1da177e4
LT		 868 err |= get_user(arg64.buf_size, &arg32->buf_size);
869 err |= get_user(cp, &arg32->buf);
870 arg64.buf = compat_ptr(cp);
871 err |= copy_to_user(p, &arg64, sizeof(arg64));
872
873 if (err)
874 return -EFAULT;
875
ef7822c2 876 err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p);
1da177e4
LT		 877 if (err)
878 return err;
7c832835
BH		 879 err |=
880 copy_in_user(&arg32->error_info, &p->error_info,
881 sizeof(arg32->error_info));
1da177e4
LT		 882 if (err)
883 return -EFAULT;
884 return err;
885}
886
ef7822c2
AV		 887static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode,
888 unsigned cmd, unsigned long arg)
1da177e4
LT		 889{
890 BIG_IOCTL32_Command_struct __user *arg32 =
7c832835 891 (BIG_IOCTL32_Command_struct __user *) arg;
1da177e4 892 BIG_IOCTL_Command_struct arg64;
7c832835
BH		 893 BIG_IOCTL_Command_struct __user *p =
894 compat_alloc_user_space(sizeof(arg64));
1da177e4
LT		 895 int err;
896 u32 cp;
897
898 err = 0;
7c832835
BH		 899 err |=
900 copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
901 sizeof(arg64.LUN_info));
902 err |=
903 copy_from_user(&arg64.Request, &arg32->Request,
904 sizeof(arg64.Request));
905 err |=
906 copy_from_user(&arg64.error_info, &arg32->error_info,
907 sizeof(arg64.error_info));
1da177e4
LT		 908 err |= get_user(arg64.buf_size, &arg32->buf_size);
909 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
910 err |= get_user(cp, &arg32->buf);
911 arg64.buf = compat_ptr(cp);
912 err |= copy_to_user(p, &arg64, sizeof(arg64));
913
914 if (err)
7c832835 915 return -EFAULT;
1da177e4 916
ef7822c2 917 err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p);
1da177e4
LT		 918 if (err)
919 return err;
7c832835
BH		 920 err |=
921 copy_in_user(&arg32->error_info, &p->error_info,
922 sizeof(arg32->error_info));
1da177e4
LT		 923 if (err)
924 return -EFAULT;
925 return err;
926}
927#endif
a885c8c4
CH		 928
929static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo)
930{
931 drive_info_struct *drv = get_drv(bdev->bd_disk);
932
933 if (!drv->cylinders)
934 return -ENXIO;
935
936 geo->heads = drv->heads;
937 geo->sectors = drv->sectors;
938 geo->cylinders = drv->cylinders;
939 return 0;
940}
941
0a9279cc
MM		 942static void check_ioctl_unit_attention(ctlr_info_t *host, CommandList_struct *c)
943{
944 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
945 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
946 (void)check_for_unit_attention(host, c);
947}
1da177e4 948/*
7c832835 949 * ioctl
1da177e4 950 */
ef7822c2 951static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
7c832835 952 unsigned int cmd, unsigned long arg)
1da177e4 953{
1da177e4
LT		 954 struct gendisk *disk = bdev->bd_disk;
955 ctlr_info_t *host = get_host(disk);
956 drive_info_struct *drv = get_drv(disk);
957 int ctlr = host->ctlr;
958 void __user *argp = (void __user *)arg;
959
960#ifdef CCISS_DEBUG
961 printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
7c832835
BH		 962#endif /* CCISS_DEBUG */
963
964 switch (cmd) {
1da177e4 965 case CCISS_GETPCIINFO:
7c832835
BH		 966 {
967 cciss_pci_info_struct pciinfo;
968
969 if (!arg)
970 return -EINVAL;
971 pciinfo.domain = pci_domain_nr(host->pdev->bus);
972 pciinfo.bus = host->pdev->bus->number;
973 pciinfo.dev_fn = host->pdev->devfn;
974 pciinfo.board_id = host->board_id;
975 if (copy_to_user
976 (argp, &pciinfo, sizeof(cciss_pci_info_struct)))
977 return -EFAULT;
978 return 0;
979 }
1da177e4 980 case CCISS_GETINTINFO:
7c832835
BH		 981 {
982 cciss_coalint_struct intinfo;
983 if (!arg)
984 return -EINVAL;
985 intinfo.delay =
986 readl(&host->cfgtable->HostWrite.CoalIntDelay);
987 intinfo.count =
988 readl(&host->cfgtable->HostWrite.CoalIntCount);
989 if (copy_to_user
990 (argp, &intinfo, sizeof(cciss_coalint_struct)))
991 return -EFAULT;
992 return 0;
993 }
1da177e4 994 case CCISS_SETINTINFO:
1da177e4 995 {
7c832835
BH		 996 cciss_coalint_struct intinfo;
997 unsigned long flags;
998 int i;
999
1000 if (!arg)
1001 return -EINVAL;
1002 if (!capable(CAP_SYS_ADMIN))
1003 return -EPERM;
1004 if (copy_from_user
1005 (&intinfo, argp, sizeof(cciss_coalint_struct)))
1006 return -EFAULT;
1007 if ((intinfo.delay == 0) && (intinfo.count == 0))
1008 {
1009// printk("cciss_ioctl: delay and count cannot be 0\n");
1010 return -EINVAL;
1011 }
1012 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1013 /* Update the field, and then ring the doorbell */
1014 writel(intinfo.delay,
1015 &(host->cfgtable->HostWrite.CoalIntDelay));
1016 writel(intinfo.count,
1017 &(host->cfgtable->HostWrite.CoalIntCount));
1018 writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
1019
1020 for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) {
1021 if (!(readl(host->vaddr + SA5_DOORBELL)
1022 & CFGTBL_ChangeReq))
1023 break;
1024 /* delay and try again */
1025 udelay(1000);
1026 }
1027 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1028 if (i >= MAX_IOCTL_CONFIG_WAIT)
1029 return -EAGAIN;
1030 return 0;
1da177e4 1031 }
1da177e4 1032 case CCISS_GETNODENAME:
7c832835
BH		 1033 {
1034 NodeName_type NodeName;
1035 int i;
1036
1037 if (!arg)
1038 return -EINVAL;
1039 for (i = 0; i < 16; i++)
1040 NodeName[i] =
1041 readb(&host->cfgtable->ServerName[i]);
1042 if (copy_to_user(argp, NodeName, sizeof(NodeName_type)))
1043 return -EFAULT;
1044 return 0;
1045 }
1da177e4 1046 case CCISS_SETNODENAME:
7c832835
BH		 1047 {
1048 NodeName_type NodeName;
1049 unsigned long flags;
1050 int i;
1051
1052 if (!arg)
1053 return -EINVAL;
1054 if (!capable(CAP_SYS_ADMIN))
1055 return -EPERM;
1056
1057 if (copy_from_user
1058 (NodeName, argp, sizeof(NodeName_type)))
1059 return -EFAULT;
1060
1061 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1062
1063 /* Update the field, and then ring the doorbell */
1064 for (i = 0; i < 16; i++)
1065 writeb(NodeName[i],
1066 &host->cfgtable->ServerName[i]);
1067
1068 writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
1069
1070 for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) {
1071 if (!(readl(host->vaddr + SA5_DOORBELL)
1072 & CFGTBL_ChangeReq))
1073 break;
1074 /* delay and try again */
1075 udelay(1000);
1076 }
1077 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1078 if (i >= MAX_IOCTL_CONFIG_WAIT)
1079 return -EAGAIN;
1080 return 0;
1081 }
1da177e4
LT		 1082
1083 case CCISS_GETHEARTBEAT:
7c832835
BH		 1084 {
1085 Heartbeat_type heartbeat;
1086
1087 if (!arg)
1088 return -EINVAL;
1089 heartbeat = readl(&host->cfgtable->HeartBeat);
1090 if (copy_to_user
1091 (argp, &heartbeat, sizeof(Heartbeat_type)))
1092 return -EFAULT;
1093 return 0;
1094 }
1da177e4 1095 case CCISS_GETBUSTYPES:
7c832835
BH		 1096 {
1097 BusTypes_type BusTypes;
1098
1099 if (!arg)
1100 return -EINVAL;
1101 BusTypes = readl(&host->cfgtable->BusTypes);
1102 if (copy_to_user
1103 (argp, &BusTypes, sizeof(BusTypes_type)))
1104 return -EFAULT;
1105 return 0;
1106 }
1da177e4 1107 case CCISS_GETFIRMVER:
7c832835
BH		 1108 {
1109 FirmwareVer_type firmware;
1da177e4 1110
7c832835
BH		 1111 if (!arg)
1112 return -EINVAL;
1113 memcpy(firmware, host->firm_ver, 4);
1da177e4 1114
7c832835
BH		 1115 if (copy_to_user
1116 (argp, firmware, sizeof(FirmwareVer_type)))
1117 return -EFAULT;
1118 return 0;
1119 }
1120 case CCISS_GETDRIVVER:
1121 {
1122 DriverVer_type DriverVer = DRIVER_VERSION;
1da177e4 1123
7c832835
BH		 1124 if (!arg)
1125 return -EINVAL;
1da177e4 1126
7c832835
BH		 1127 if (copy_to_user
1128 (argp, &DriverVer, sizeof(DriverVer_type)))
1129 return -EFAULT;
1130 return 0;
1131 }
1da177e4 1132
6ae5ce8e
MM		 1133 case CCISS_DEREGDISK:
1134 case CCISS_REGNEWD:
1da177e4 1135 case CCISS_REVALIDVOLS:
6ae5ce8e 1136 return rebuild_lun_table(host, 0);
7c832835
BH		 1137
1138 case CCISS_GETLUNINFO:{
1139 LogvolInfo_struct luninfo;
1140
1141 luninfo.LunID = drv->LunID;
1142 luninfo.num_opens = drv->usage_count;
1143 luninfo.num_parts = 0;
1144 if (copy_to_user(argp, &luninfo,
1145 sizeof(LogvolInfo_struct)))
1146 return -EFAULT;
1147 return 0;
1148 }
1da177e4 1149 case CCISS_PASSTHRU:
1da177e4 1150 {
7c832835
BH		 1151 IOCTL_Command_struct iocommand;
1152 CommandList_struct *c;
1153 char *buff = NULL;
1154 u64bit temp64;
1155 unsigned long flags;
6e9a4738 1156 DECLARE_COMPLETION_ONSTACK(wait);
1da177e4 1157
7c832835
BH		 1158 if (!arg)
1159 return -EINVAL;
1da177e4 1160
7c832835
BH		 1161 if (!capable(CAP_SYS_RAWIO))
1162 return -EPERM;
1da177e4 1163
7c832835
BH		 1164 if (copy_from_user
1165 (&iocommand, argp, sizeof(IOCTL_Command_struct)))
1166 return -EFAULT;
1167 if ((iocommand.buf_size < 1) &&
1168 (iocommand.Request.Type.Direction != XFER_NONE)) {
1169 return -EINVAL;
1170 }
1171#if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
1172 /* Check kmalloc limits */
1173 if (iocommand.buf_size > 128000)
1174 return -EINVAL;
1175#endif
1176 if (iocommand.buf_size > 0) {
1177 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
1178 if (buff == NULL)
1179 return -EFAULT;
1180 }
1181 if (iocommand.Request.Type.Direction == XFER_WRITE) {
1182 /* Copy the data into the buffer we created */
1183 if (copy_from_user
1184 (buff, iocommand.buf, iocommand.buf_size)) {
1185 kfree(buff);
1186 return -EFAULT;
1187 }
1188 } else {
1189 memset(buff, 0, iocommand.buf_size);
1190 }
1191 if ((c = cmd_alloc(host, 0)) == NULL) {
1192 kfree(buff);
1193 return -ENOMEM;
1194 }
1195 // Fill in the command type
1196 c->cmd_type = CMD_IOCTL_PEND;
1197 // Fill in Command Header
1198 c->Header.ReplyQueue = 0; // unused in simple mode
1199 if (iocommand.buf_size > 0) // buffer to fill
1200 {
1201 c->Header.SGList = 1;
1202 c->Header.SGTotal = 1;
1203 } else // no buffers to fill
1204 {
1205 c->Header.SGList = 0;
1206 c->Header.SGTotal = 0;
1207 }
1208 c->Header.LUN = iocommand.LUN_info;
1209 c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
1da177e4 1210
7c832835
BH		 1211 // Fill in Request block
1212 c->Request = iocommand.Request;
1da177e4 1213
7c832835
BH		 1214 // Fill in the scatter gather information
1215 if (iocommand.buf_size > 0) {
1216 temp64.val = pci_map_single(host->pdev, buff,
1217 iocommand.buf_size,
1218 PCI_DMA_BIDIRECTIONAL);
1219 c->SG[0].Addr.lower = temp64.val32.lower;
1220 c->SG[0].Addr.upper = temp64.val32.upper;
1221 c->SG[0].Len = iocommand.buf_size;
1222 c->SG[0].Ext = 0; // we are not chaining
1223 }
1224 c->waiting = &wait;
1225
1226 /* Put the request on the tail of the request queue */
1227 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1228 addQ(&host->reqQ, c);
1229 host->Qdepth++;
1230 start_io(host);
1231 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1232
1233 wait_for_completion(&wait);
1234
1235 /* unlock the buffers from DMA */
1236 temp64.val32.lower = c->SG[0].Addr.lower;
1237 temp64.val32.upper = c->SG[0].Addr.upper;
1238 pci_unmap_single(host->pdev, (dma_addr_t) temp64.val,
1239 iocommand.buf_size,
1240 PCI_DMA_BIDIRECTIONAL);
1241
0a9279cc
MM		 1242 check_ioctl_unit_attention(host, c);
1243
7c832835
BH		 1244 /* Copy the error information out */
1245 iocommand.error_info = *(c->err_info);
1246 if (copy_to_user
1247 (argp, &iocommand, sizeof(IOCTL_Command_struct))) {
1248 kfree(buff);
1da177e4
LT		 1249 cmd_free(host, c, 0);
1250 return -EFAULT;
1251 }
7c832835
BH		 1252
1253 if (iocommand.Request.Type.Direction == XFER_READ) {
1254 /* Copy the data out of the buffer we created */
1255 if (copy_to_user
1256 (iocommand.buf, buff, iocommand.buf_size)) {
1257 kfree(buff);
1258 cmd_free(host, c, 0);
1259 return -EFAULT;
1260 }
1261 }
1262 kfree(buff);
1263 cmd_free(host, c, 0);
1264 return 0;
1da177e4 1265 }
7c832835
BH		 1266 case CCISS_BIG_PASSTHRU:{
1267 BIG_IOCTL_Command_struct *ioc;
1268 CommandList_struct *c;
1269 unsigned char **buff = NULL;
1270 int *buff_size = NULL;
1271 u64bit temp64;
1272 unsigned long flags;
1273 BYTE sg_used = 0;
1274 int status = 0;
1275 int i;
6e9a4738 1276 DECLARE_COMPLETION_ONSTACK(wait);
7c832835
BH		 1277 __u32 left;
1278 __u32 sz;
1279 BYTE __user *data_ptr;
1280
1281 if (!arg)
1282 return -EINVAL;
1283 if (!capable(CAP_SYS_RAWIO))
1284 return -EPERM;
1285 ioc = (BIG_IOCTL_Command_struct *)
1286 kmalloc(sizeof(*ioc), GFP_KERNEL);
1287 if (!ioc) {
1288 status = -ENOMEM;
1289 goto cleanup1;
1290 }
1291 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
1292 status = -EFAULT;
1293 goto cleanup1;
1294 }
1295 if ((ioc->buf_size < 1) &&
1296 (ioc->Request.Type.Direction != XFER_NONE)) {
1da177e4
LT		 1297 status = -EINVAL;
1298 goto cleanup1;
7c832835
BH		 1299 }
1300 /* Check kmalloc limits using all SGs */
1301 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
1302 status = -EINVAL;
1303 goto cleanup1;
1304 }
1305 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
1306 status = -EINVAL;
1307 goto cleanup1;
1308 }
1309 buff =
1310 kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL);
1311 if (!buff) {
1da177e4
LT		 1312 status = -ENOMEM;
1313 goto cleanup1;
1314 }
5cbded58 1315 buff_size = kmalloc(MAXSGENTRIES * sizeof(int),
7c832835
BH		 1316 GFP_KERNEL);
1317 if (!buff_size) {
1318 status = -ENOMEM;
1319 goto cleanup1;
1320 }
1321 left = ioc->buf_size;
1322 data_ptr = ioc->buf;
1323 while (left) {
1324 sz = (left >
1325 ioc->malloc_size) ? ioc->
1326 malloc_size : left;
1327 buff_size[sg_used] = sz;
1328 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
1329 if (buff[sg_used] == NULL) {
1da177e4 1330 status = -ENOMEM;
15534d38
JA		 1331 goto cleanup1;
1332 }
7c832835
BH		 1333 if (ioc->Request.Type.Direction == XFER_WRITE) {
1334 if (copy_from_user
1335 (buff[sg_used], data_ptr, sz)) {
f7108f91 1336 status = -EFAULT;
7c832835
BH		 1337 goto cleanup1;
1338 }
1339 } else {
1340 memset(buff[sg_used], 0, sz);
1341 }
1342 left -= sz;
1343 data_ptr += sz;
1344 sg_used++;
1345 }
1346 if ((c = cmd_alloc(host, 0)) == NULL) {
1347 status = -ENOMEM;
1348 goto cleanup1;
1349 }
1350 c->cmd_type = CMD_IOCTL_PEND;
1351 c->Header.ReplyQueue = 0;
1352
1353 if (ioc->buf_size > 0) {
1354 c->Header.SGList = sg_used;
1355 c->Header.SGTotal = sg_used;
1da177e4 1356 } else {
7c832835
BH		 1357 c->Header.SGList = 0;
1358 c->Header.SGTotal = 0;
1da177e4 1359 }
7c832835
BH		 1360 c->Header.LUN = ioc->LUN_info;
1361 c->Header.Tag.lower = c->busaddr;
1362
1363 c->Request = ioc->Request;
1364 if (ioc->buf_size > 0) {
1365 int i;
1366 for (i = 0; i < sg_used; i++) {
1367 temp64.val =
1368 pci_map_single(host->pdev, buff[i],
1369 buff_size[i],
1370 PCI_DMA_BIDIRECTIONAL);
1371 c->SG[i].Addr.lower =
1372 temp64.val32.lower;
1373 c->SG[i].Addr.upper =
1374 temp64.val32.upper;
1375 c->SG[i].Len = buff_size[i];
1376 c->SG[i].Ext = 0; /* we are not chaining */
1377 }
1378 }
1379 c->waiting = &wait;
1380 /* Put the request on the tail of the request queue */
1381 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1382 addQ(&host->reqQ, c);
1383 host->Qdepth++;
1384 start_io(host);
1385 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1386 wait_for_completion(&wait);
1387 /* unlock the buffers from DMA */
1388 for (i = 0; i < sg_used; i++) {
1389 temp64.val32.lower = c->SG[i].Addr.lower;
1390 temp64.val32.upper = c->SG[i].Addr.upper;
1391 pci_unmap_single(host->pdev,
1392 (dma_addr_t) temp64.val, buff_size[i],
1da177e4 1393 PCI_DMA_BIDIRECTIONAL);
1da177e4 1394 }
0a9279cc 1395 check_ioctl_unit_attention(host, c);
7c832835
BH		 1396 /* Copy the error information out */
1397 ioc->error_info = *(c->err_info);
1398 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
1399 cmd_free(host, c, 0);
1400 status = -EFAULT;
1401 goto cleanup1;
1402 }
1403 if (ioc->Request.Type.Direction == XFER_READ) {
1404 /* Copy the data out of the buffer we created */
1405 BYTE __user *ptr = ioc->buf;
1406 for (i = 0; i < sg_used; i++) {
1407 if (copy_to_user
1408 (ptr, buff[i], buff_size[i])) {
1409 cmd_free(host, c, 0);
1410 status = -EFAULT;
1411 goto cleanup1;
1412 }
1413 ptr += buff_size[i];
1da177e4 1414 }
1da177e4 1415 }
7c832835
BH		 1416 cmd_free(host, c, 0);
1417 status = 0;
1418 cleanup1:
1419 if (buff) {
1420 for (i = 0; i < sg_used; i++)
1421 kfree(buff[i]);
1422 kfree(buff);
1423 }
1424 kfree(buff_size);
1425 kfree(ioc);
1426 return status;
1da177e4 1427 }
03bbfee5
MMOD		 1428
1429 /* scsi_cmd_ioctl handles these, below, though some are not */
1430 /* very meaningful for cciss. SG_IO is the main one people want. */
1431
1432 case SG_GET_VERSION_NUM:
1433 case SG_SET_TIMEOUT:
1434 case SG_GET_TIMEOUT:
1435 case SG_GET_RESERVED_SIZE:
1436 case SG_SET_RESERVED_SIZE:
1437 case SG_EMULATED_HOST:
1438 case SG_IO:
1439 case SCSI_IOCTL_SEND_COMMAND:
ef7822c2 1440 return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp);
03bbfee5
MMOD		 1441
1442 /* scsi_cmd_ioctl would normally handle these, below, but */
1443 /* they aren't a good fit for cciss, as CD-ROMs are */
1444 /* not supported, and we don't have any bus/target/lun */
1445 /* which we present to the kernel. */
1446
1447 case CDROM_SEND_PACKET:
1448 case CDROMCLOSETRAY:
1449 case CDROMEJECT:
1450 case SCSI_IOCTL_GET_IDLUN:
1451 case SCSI_IOCTL_GET_BUS_NUMBER:
1da177e4
LT		 1452 default:
1453 return -ENOTTY;
1454 }
1da177e4
LT		 1455}
1456
7b30f092
JA		 1457static void cciss_check_queues(ctlr_info_t *h)
1458{
1459 int start_queue = h->next_to_run;
1460 int i;
1461
1462 /* check to see if we have maxed out the number of commands that can
1463 * be placed on the queue. If so then exit. We do this check here
1464 * in case the interrupt we serviced was from an ioctl and did not
1465 * free any new commands.
1466 */
f880632f 1467 if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds)
7b30f092
JA		 1468 return;
1469
1470 /* We have room on the queue for more commands. Now we need to queue
1471 * them up. We will also keep track of the next queue to run so
1472 * that every queue gets a chance to be started first.
1473 */
1474 for (i = 0; i < h->highest_lun + 1; i++) {
1475 int curr_queue = (start_queue + i) % (h->highest_lun + 1);
1476 /* make sure the disk has been added and the drive is real
1477 * because this can be called from the middle of init_one.
1478 */
1479 if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads))
1480 continue;
1481 blk_start_queue(h->gendisk[curr_queue]->queue);
1482
1483 /* check to see if we have maxed out the number of commands
1484 * that can be placed on the queue.
1485 */
f880632f 1486 if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) {
7b30f092
JA		 1487 if (curr_queue == start_queue) {
1488 h->next_to_run =
1489 (start_queue + 1) % (h->highest_lun + 1);
1490 break;
1491 } else {
1492 h->next_to_run = curr_queue;
1493 break;
1494 }
7b30f092
JA		 1495 }
1496 }
1497}
1498
ca1e0484
MM		 1499static void cciss_softirq_done(struct request *rq)
1500{
1501 CommandList_struct *cmd = rq->completion_data;
1502 ctlr_info_t *h = hba[cmd->ctlr];
1503 unsigned long flags;
1504 u64bit temp64;
1505 int i, ddir;
1506
1507 if (cmd->Request.Type.Direction == XFER_READ)
1508 ddir = PCI_DMA_FROMDEVICE;
1509 else
1510 ddir = PCI_DMA_TODEVICE;
1511
1512 /* command did not need to be retried */
1513 /* unmap the DMA mapping for all the scatter gather elements */
7c832835 1514 for (i = 0; i < cmd->Header.SGList; i++) {
ca1e0484
MM		 1515 temp64.val32.lower = cmd->SG[i].Addr.lower;
1516 temp64.val32.upper = cmd->SG[i].Addr.upper;
1517 pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir);
1518 }
1519
ca1e0484
MM		 1520#ifdef CCISS_DEBUG
1521 printk("Done with %p\n", rq);
7c832835 1522#endif /* CCISS_DEBUG */
ca1e0484 1523
c3a4d78c 1524 /* set the residual count for pc requests */
ac44e5b2 1525 if (blk_pc_request(rq))
c3a4d78c 1526 rq->resid_len = cmd->err_info->ResidualCnt;
ac44e5b2 1527
c3a4d78c 1528 blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO);
3daeea29 1529
ca1e0484 1530 spin_lock_irqsave(&h->lock, flags);
7c832835 1531 cmd_free(h, cmd, 1);
7b30f092 1532 cciss_check_queues(h);
ca1e0484
MM		 1533 spin_unlock_irqrestore(&h->lock, flags);
1534}
1535
b57695fe 1536static void log_unit_to_scsi3addr(ctlr_info_t *h, unsigned char scsi3addr[],
1537 uint32_t log_unit)
1538{
1539 log_unit = h->drv[log_unit].LunID & 0x03fff;
1540 memset(&scsi3addr[4], 0, 4);
1541 memcpy(&scsi3addr[0], &log_unit, 4);
1542 scsi3addr[3] |= 0x40;
1543}
1544
7fe06326
AP		 1545/* This function gets the SCSI vendor, model, and revision of a logical drive
1546 * via the inquiry page 0. Model, vendor, and rev are set to empty strings if
1547 * they cannot be read.
1548 */
1549static void cciss_get_device_descr(int ctlr, int logvol, int withirq,
1550 char *vendor, char *model, char *rev)
1551{
1552 int rc;
1553 InquiryData_struct *inq_buf;
b57695fe 1554 unsigned char scsi3addr[8];
7fe06326
AP		 1555
1556 *vendor = '\0';
1557 *model = '\0';
1558 *rev = '\0';
1559
1560 inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL);
1561 if (!inq_buf)
1562 return;
1563
b57695fe 1564 log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
7fe06326
AP		 1565 if (withirq)
1566 rc = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buf,
b57695fe 1567 sizeof(InquiryData_struct), 0,
1568 scsi3addr, TYPE_CMD);
7fe06326
AP		 1569 else
1570 rc = sendcmd(CISS_INQUIRY, ctlr, inq_buf,
b57695fe 1571 sizeof(InquiryData_struct), 0,
1572 scsi3addr, TYPE_CMD);
7fe06326
AP		 1573 if (rc == IO_OK) {
1574 memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN);
1575 vendor[VENDOR_LEN] = '\0';
1576 memcpy(model, &inq_buf->data_byte[16], MODEL_LEN);
1577 model[MODEL_LEN] = '\0';
1578 memcpy(rev, &inq_buf->data_byte[32], REV_LEN);
1579 rev[REV_LEN] = '\0';
1580 }
1581
1582 kfree(inq_buf);
1583 return;
1584}
1585
a72da29b
MM		 1586/* This function gets the serial number of a logical drive via
1587 * inquiry page 0x83. Serial no. is 16 bytes. If the serial
1588 * number cannot be had, for whatever reason, 16 bytes of 0xff
1589 * are returned instead.
1590 */
1591static void cciss_get_serial_no(int ctlr, int logvol, int withirq,
1592 unsigned char *serial_no, int buflen)
1593{
1594#define PAGE_83_INQ_BYTES 64
1595 int rc;
1596 unsigned char *buf;
b57695fe 1597 unsigned char scsi3addr[8];
a72da29b
MM		 1598
1599 if (buflen > 16)
1600 buflen = 16;
1601 memset(serial_no, 0xff, buflen);
1602 buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL);
1603 if (!buf)
1604 return;
1605 memset(serial_no, 0, buflen);
b57695fe 1606 log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
a72da29b
MM		 1607 if (withirq)
1608 rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf,
b57695fe 1609 PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD);
a72da29b
MM		 1610 else
1611 rc = sendcmd(CISS_INQUIRY, ctlr, buf,
b57695fe 1612 PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD);
a72da29b
MM		 1613 if (rc == IO_OK)
1614 memcpy(serial_no, &buf[8], buflen);
1615 kfree(buf);
1616 return;
1617}
1618
6ae5ce8e
MM		 1619static void cciss_add_disk(ctlr_info_t *h, struct gendisk *disk,
1620 int drv_index)
1621{
1622 disk->queue = blk_init_queue(do_cciss_request, &h->lock);
1623 sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index);
1624 disk->major = h->major;
1625 disk->first_minor = drv_index << NWD_SHIFT;
1626 disk->fops = &cciss_fops;
1627 disk->private_data = &h->drv[drv_index];
7fe06326 1628 disk->driverfs_dev = &h->drv[drv_index].dev;
6ae5ce8e
MM		 1629
1630 /* Set up queue information */
1631 blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask);
1632
1633 /* This is a hardware imposed limit. */
1634 blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES);
1635
1636 /* This is a limit in the driver and could be eliminated. */
1637 blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES);
1638
1639 blk_queue_max_sectors(disk->queue, h->cciss_max_sectors);
1640
1641 blk_queue_softirq_done(disk->queue, cciss_softirq_done);
1642
1643 disk->queue->queuedata = h;
1644
e1defc4f
MP		 1645 blk_queue_logical_block_size(disk->queue,
1646 h->drv[drv_index].block_size);
6ae5ce8e
MM		 1647
1648 /* Make sure all queue data is written out before */
1649 /* setting h->drv[drv_index].queue, as setting this */
1650 /* allows the interrupt handler to start the queue */
1651 wmb();
1652 h->drv[drv_index].queue = disk->queue;
1653 add_disk(disk);
1654}
1655
ddd47442 1656/* This function will check the usage_count of the drive to be updated/added.
a72da29b
MM		 1657 * If the usage_count is zero and it is a heretofore unknown drive, or,
1658 * the drive's capacity, geometry, or serial number has changed,
1659 * then the drive information will be updated and the disk will be
1660 * re-registered with the kernel. If these conditions don't hold,
1661 * then it will be left alone for the next reboot. The exception to this
1662 * is disk 0 which will always be left registered with the kernel since it
1663 * is also the controller node. Any changes to disk 0 will show up on
1664 * the next reboot.
7c832835 1665 */
6ae5ce8e 1666static void cciss_update_drive_info(int ctlr, int drv_index, int first_time)
7c832835 1667{
ddd47442
MM		 1668 ctlr_info_t *h = hba[ctlr];
1669 struct gendisk *disk;
ddd47442
MM		 1670 InquiryData_struct *inq_buff = NULL;
1671 unsigned int block_size;
00988a35 1672 sector_t total_size;
ddd47442
MM		 1673 unsigned long flags = 0;
1674 int ret = 0;
a72da29b 1675 drive_info_struct *drvinfo;
6ae5ce8e 1676 int was_only_controller_node;
a72da29b
MM		 1677
1678 /* Get information about the disk and modify the driver structure */
1679 inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
1680 drvinfo = kmalloc(sizeof(*drvinfo), GFP_KERNEL);
1681 if (inq_buff == NULL || drvinfo == NULL)
1682 goto mem_msg;
1683
6ae5ce8e
MM		 1684 /* See if we're trying to update the "controller node"
1685 * this will happen the when the first logical drive gets
1686 * created by ACU.
1687 */
1688 was_only_controller_node = (drv_index == 0 &&
1689 h->drv[0].raid_level == -1);
1690
a72da29b
MM		 1691 /* testing to see if 16-byte CDBs are already being used */
1692 if (h->cciss_read == CCISS_READ_16) {
1693 cciss_read_capacity_16(h->ctlr, drv_index, 1,
1694 &total_size, &block_size);
1695
1696 } else {
1697 cciss_read_capacity(ctlr, drv_index, 1,
1698 &total_size, &block_size);
1699
1700 /* if read_capacity returns all F's this volume is >2TB */
1701 /* in size so we switch to 16-byte CDB's for all */
1702 /* read/write ops */
1703 if (total_size == 0xFFFFFFFFULL) {
1704 cciss_read_capacity_16(ctlr, drv_index, 1,
1705 &total_size, &block_size);
1706 h->cciss_read = CCISS_READ_16;
1707 h->cciss_write = CCISS_WRITE_16;
1708 } else {
1709 h->cciss_read = CCISS_READ_10;
1710 h->cciss_write = CCISS_WRITE_10;
1711 }
1712 }
1713
1714 cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size,
1715 inq_buff, drvinfo);
1716 drvinfo->block_size = block_size;
1717 drvinfo->nr_blocks = total_size + 1;
1718
7fe06326
AP		 1719 cciss_get_device_descr(ctlr, drv_index, 1, drvinfo->vendor,
1720 drvinfo->model, drvinfo->rev);
a72da29b
MM		 1721 cciss_get_serial_no(ctlr, drv_index, 1, drvinfo->serial_no,
1722 sizeof(drvinfo->serial_no));
1723
1724 /* Is it the same disk we already know, and nothing's changed? */
1725 if (h->drv[drv_index].raid_level != -1 &&
1726 ((memcmp(drvinfo->serial_no,
1727 h->drv[drv_index].serial_no, 16) == 0) &&
1728 drvinfo->block_size == h->drv[drv_index].block_size &&
1729 drvinfo->nr_blocks == h->drv[drv_index].nr_blocks &&
1730 drvinfo->heads == h->drv[drv_index].heads &&
1731 drvinfo->sectors == h->drv[drv_index].sectors &&
6ae5ce8e 1732 drvinfo->cylinders == h->drv[drv_index].cylinders))
a72da29b
MM		 1733 /* The disk is unchanged, nothing to update */
1734 goto freeret;
a72da29b 1735
6ae5ce8e
MM		 1736 /* If we get here it's not the same disk, or something's changed,
1737 * so we need to * deregister it, and re-register it, if it's not
1738 * in use.
1739 * If the disk already exists then deregister it before proceeding
1740 * (unless it's the first disk (for the controller node).
1741 */
a72da29b
MM		 1742 if (h->drv[drv_index].raid_level != -1 && drv_index != 0) {
1743 printk(KERN_WARNING "disk %d has changed.\n", drv_index);
ddd47442
MM		 1744 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
1745 h->drv[drv_index].busy_configuring = 1;
1746 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
e14ac670 1747
6ae5ce8e
MM		 1748 /* deregister_disk sets h->drv[drv_index].queue = NULL
1749 * which keeps the interrupt handler from starting
1750 * the queue.
1751 */
a0ea8622 1752 ret = deregister_disk(h, drv_index, 0);
ddd47442
MM		 1753 h->drv[drv_index].busy_configuring = 0;
1754 }
1755
1756 /* If the disk is in use return */
1757 if (ret)
a72da29b
MM		 1758 goto freeret;
1759
6ae5ce8e
MM		 1760 /* Save the new information from cciss_geometry_inquiry
1761 * and serial number inquiry.
1762 */
a72da29b
MM		 1763 h->drv[drv_index].block_size = drvinfo->block_size;
1764 h->drv[drv_index].nr_blocks = drvinfo->nr_blocks;
1765 h->drv[drv_index].heads = drvinfo->heads;
1766 h->drv[drv_index].sectors = drvinfo->sectors;
1767 h->drv[drv_index].cylinders = drvinfo->cylinders;
1768 h->drv[drv_index].raid_level = drvinfo->raid_level;
1769 memcpy(h->drv[drv_index].serial_no, drvinfo->serial_no, 16);
7fe06326
AP		 1770 memcpy(h->drv[drv_index].vendor, drvinfo->vendor, VENDOR_LEN + 1);
1771 memcpy(h->drv[drv_index].model, drvinfo->model, MODEL_LEN + 1);
1772 memcpy(h->drv[drv_index].rev, drvinfo->rev, REV_LEN + 1);
ddd47442
MM		 1773
1774 ++h->num_luns;
1775 disk = h->gendisk[drv_index];
1776 set_capacity(disk, h->drv[drv_index].nr_blocks);
1777
6ae5ce8e
MM		 1778 /* If it's not disk 0 (drv_index != 0)
1779 * or if it was disk 0, but there was previously
1780 * no actual corresponding configured logical drive
1781 * (raid_leve == -1) then we want to update the
1782 * logical drive's information.
1783 */
1784 if (drv_index || first_time)
1785 cciss_add_disk(h, disk, drv_index);
ddd47442 1786
6ae5ce8e 1787freeret:
ddd47442 1788 kfree(inq_buff);
a72da29b 1789 kfree(drvinfo);
ddd47442 1790 return;
6ae5ce8e 1791mem_msg:
ddd47442
MM		 1792 printk(KERN_ERR "cciss: out of memory\n");
1793 goto freeret;
1794}
1795
1796/* This function will find the first index of the controllers drive array
1797 * that has a -1 for the raid_level and will return that index. This is
1798 * where new drives will be added. If the index to be returned is greater
1799 * than the highest_lun index for the controller then highest_lun is set
1800 * to this new index. If there are no available indexes then -1 is returned.
eece695f
MM		 1801 * "controller_node" is used to know if this is a real logical drive, or just
1802 * the controller node, which determines if this counts towards highest_lun.
7c832835 1803 */
eece695f 1804static int cciss_find_free_drive_index(int ctlr, int controller_node)
ddd47442
MM		 1805{
1806 int i;
1807
7c832835
BH		 1808 for (i = 0; i < CISS_MAX_LUN; i++) {
1809 if (hba[ctlr]->drv[i].raid_level == -1) {
ddd47442 1810 if (i > hba[ctlr]->highest_lun)
eece695f
MM		 1811 if (!controller_node)
1812 hba[ctlr]->highest_lun = i;
ddd47442
MM		 1813 return i;
1814 }
1815 }
1816 return -1;
1817}
1818
6ae5ce8e
MM		 1819/* cciss_add_gendisk finds a free hba[]->drv structure
1820 * and allocates a gendisk if needed, and sets the lunid
1821 * in the drvinfo structure. It returns the index into
1822 * the ->drv[] array, or -1 if none are free.
1823 * is_controller_node indicates whether highest_lun should
1824 * count this disk, or if it's only being added to provide
1825 * a means to talk to the controller in case no logical
1826 * drives have yet been configured.
1827 */
eece695f 1828static int cciss_add_gendisk(ctlr_info_t *h, __u32 lunid, int controller_node)
6ae5ce8e
MM		 1829{
1830 int drv_index;
1831
eece695f 1832 drv_index = cciss_find_free_drive_index(h->ctlr, controller_node);
6ae5ce8e
MM		 1833 if (drv_index == -1)
1834 return -1;
1835 /*Check if the gendisk needs to be allocated */
1836 if (!h->gendisk[drv_index]) {
1837 h->gendisk[drv_index] =
1838 alloc_disk(1 << NWD_SHIFT);
1839 if (!h->gendisk[drv_index]) {
1840 printk(KERN_ERR "cciss%d: could not "
1841 "allocate a new disk %d\n",
1842 h->ctlr, drv_index);
1843 return -1;
1844 }
1845 }
1846 h->drv[drv_index].LunID = lunid;
7fe06326
AP		 1847 if (cciss_create_ld_sysfs_entry(h, &h->drv[drv_index], drv_index))
1848 goto err_free_disk;
6ae5ce8e
MM		 1849
1850 /* Don't need to mark this busy because nobody */
1851 /* else knows about this disk yet to contend */
1852 /* for access to it. */
1853 h->drv[drv_index].busy_configuring = 0;
1854 wmb();
1855 return drv_index;
7fe06326
AP		 1856
1857err_free_disk:
1858 put_disk(h->gendisk[drv_index]);
1859 h->gendisk[drv_index] = NULL;
1860 return -1;
6ae5ce8e
MM		 1861}
1862
1863/* This is for the special case of a controller which
1864 * has no logical drives. In this case, we still need
1865 * to register a disk so the controller can be accessed
1866 * by the Array Config Utility.
1867 */
1868static void cciss_add_controller_node(ctlr_info_t *h)
1869{
1870 struct gendisk *disk;
1871 int drv_index;
1872
1873 if (h->gendisk[0] != NULL) /* already did this? Then bail. */
1874 return;
1875
eece695f 1876 drv_index = cciss_add_gendisk(h, 0, 1);
6ae5ce8e
MM		 1877 if (drv_index == -1) {
1878 printk(KERN_WARNING "cciss%d: could not "
1879 "add disk 0.\n", h->ctlr);
1880 return;
1881 }
1882 h->drv[drv_index].block_size = 512;
1883 h->drv[drv_index].nr_blocks = 0;
1884 h->drv[drv_index].heads = 0;
1885 h->drv[drv_index].sectors = 0;
1886 h->drv[drv_index].cylinders = 0;
1887 h->drv[drv_index].raid_level = -1;
1888 memset(h->drv[drv_index].serial_no, 0, 16);
1889 disk = h->gendisk[drv_index];
1890 cciss_add_disk(h, disk, drv_index);
1891}
1892
ddd47442 1893/* This function will add and remove logical drives from the Logical
d14c4ab5 1894 * drive array of the controller and maintain persistency of ordering
ddd47442
MM		 1895 * so that mount points are preserved until the next reboot. This allows
1896 * for the removal of logical drives in the middle of the drive array
1897 * without a re-ordering of those drives.
1898 * INPUT
1899 * h = The controller to perform the operations on
7c832835 1900 */
6ae5ce8e 1901static int rebuild_lun_table(ctlr_info_t *h, int first_time)
1da177e4 1902{
ddd47442
MM		 1903 int ctlr = h->ctlr;
1904 int num_luns;
1905 ReportLunData_struct *ld_buff = NULL;
ddd47442
MM		 1906 int return_code;
1907 int listlength = 0;
1908 int i;
1909 int drv_found;
1910 int drv_index = 0;
1911 __u32 lunid = 0;
1da177e4 1912 unsigned long flags;
ddd47442 1913
6ae5ce8e
MM		 1914 if (!capable(CAP_SYS_RAWIO))
1915 return -EPERM;
1916
ddd47442
MM		 1917 /* Set busy_configuring flag for this operation */
1918 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
7c832835 1919 if (h->busy_configuring) {
ddd47442
MM		 1920 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1921 return -EBUSY;
1922 }
1923 h->busy_configuring = 1;
a72da29b 1924 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
ddd47442 1925
a72da29b
MM		 1926 ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1927 if (ld_buff == NULL)
1928 goto mem_msg;
1929
1930 return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
b57695fe 1931 sizeof(ReportLunData_struct),
1932 0, CTLR_LUNID, TYPE_CMD);
ddd47442 1933
a72da29b
MM		 1934 if (return_code == IO_OK)
1935 listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength);
1936 else { /* reading number of logical volumes failed */
1937 printk(KERN_WARNING "cciss: report logical volume"
1938 " command failed\n");
1939 listlength = 0;
1940 goto freeret;
1941 }
1942
1943 num_luns = listlength / 8; /* 8 bytes per entry */
1944 if (num_luns > CISS_MAX_LUN) {
1945 num_luns = CISS_MAX_LUN;
1946 printk(KERN_WARNING "cciss: more luns configured"
1947 " on controller than can be handled by"
1948 " this driver.\n");
1949 }
1950
6ae5ce8e
MM		 1951 if (num_luns == 0)
1952 cciss_add_controller_node(h);
1953
1954 /* Compare controller drive array to driver's drive array
1955 * to see if any drives are missing on the controller due
1956 * to action of Array Config Utility (user deletes drive)
1957 * and deregister logical drives which have disappeared.
1958 */
a72da29b
MM		 1959 for (i = 0; i <= h->highest_lun; i++) {
1960 int j;
1961 drv_found = 0;
d8a0be6a
SC		 1962
1963 /* skip holes in the array from already deleted drives */
1964 if (h->drv[i].raid_level == -1)
1965 continue;
1966
a72da29b
MM		 1967 for (j = 0; j < num_luns; j++) {
1968 memcpy(&lunid, &ld_buff->LUN[j][0], 4);
1969 lunid = le32_to_cpu(lunid);
1970 if (h->drv[i].LunID == lunid) {
1971 drv_found = 1;
1972 break;
1973 }
1974 }
1975 if (!drv_found) {
1976 /* Deregister it from the OS, it's gone. */
1977 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
1978 h->drv[i].busy_configuring = 1;
1979 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
a0ea8622 1980 return_code = deregister_disk(h, i, 1);
7fe06326 1981 cciss_destroy_ld_sysfs_entry(&h->drv[i]);
a72da29b 1982 h->drv[i].busy_configuring = 0;
ddd47442 1983 }
a72da29b 1984 }
ddd47442 1985
a72da29b
MM		 1986 /* Compare controller drive array to driver's drive array.
1987 * Check for updates in the drive information and any new drives
1988 * on the controller due to ACU adding logical drives, or changing
1989 * a logical drive's size, etc. Reregister any new/changed drives
1990 */
1991 for (i = 0; i < num_luns; i++) {
1992 int j;
ddd47442 1993
a72da29b 1994 drv_found = 0;
ddd47442 1995
a72da29b
MM		 1996 memcpy(&lunid, &ld_buff->LUN[i][0], 4);
1997 lunid = le32_to_cpu(lunid);
ddd47442 1998
a72da29b
MM		 1999 /* Find if the LUN is already in the drive array
2000 * of the driver. If so then update its info
2001 * if not in use. If it does not exist then find
2002 * the first free index and add it.
2003 */
2004 for (j = 0; j <= h->highest_lun; j++) {
2005 if (h->drv[j].raid_level != -1 &&
2006 h->drv[j].LunID == lunid) {
2007 drv_index = j;
2008 drv_found = 1;
2009 break;
ddd47442 2010 }
a72da29b 2011 }
ddd47442 2012
a72da29b
MM		 2013 /* check if the drive was found already in the array */
2014 if (!drv_found) {
eece695f 2015 drv_index = cciss_add_gendisk(h, lunid, 0);
a72da29b
MM		 2016 if (drv_index == -1)
2017 goto freeret;
a72da29b 2018 }
6ae5ce8e 2019 cciss_update_drive_info(ctlr, drv_index, first_time);
a72da29b 2020 } /* end for */
ddd47442 2021
6ae5ce8e 2022freeret:
ddd47442
MM		 2023 kfree(ld_buff);
2024 h->busy_configuring = 0;
2025 /* We return -1 here to tell the ACU that we have registered/updated
2026 * all of the drives that we can and to keep it from calling us
2027 * additional times.
7c832835 2028 */
ddd47442 2029 return -1;
6ae5ce8e 2030mem_msg:
ddd47442 2031 printk(KERN_ERR "cciss: out of memory\n");
a72da29b 2032 h->busy_configuring = 0;
ddd47442
MM		 2033 goto freeret;
2034}
2035
2036/* This function will deregister the disk and it's queue from the
2037 * kernel. It must be called with the controller lock held and the
2038 * drv structures busy_configuring flag set. It's parameters are:
2039 *
2040 * disk = This is the disk to be deregistered
2041 * drv = This is the drive_info_struct associated with the disk to be
2042 * deregistered. It contains information about the disk used
2043 * by the driver.
2044 * clear_all = This flag determines whether or not the disk information
2045 * is going to be completely cleared out and the highest_lun
2046 * reset. Sometimes we want to clear out information about
d14c4ab5 2047 * the disk in preparation for re-adding it. In this case
ddd47442
MM		 2048 * the highest_lun should be left unchanged and the LunID
2049 * should not be cleared.
2050*/
a0ea8622 2051static int deregister_disk(ctlr_info_t *h, int drv_index,
ddd47442
MM		 2052 int clear_all)
2053{
799202cb 2054 int i;
a0ea8622
SC		 2055 struct gendisk *disk;
2056 drive_info_struct *drv;
1da177e4
LT		 2057
2058 if (!capable(CAP_SYS_RAWIO))
2059 return -EPERM;
2060
a0ea8622
SC		 2061 drv = &h->drv[drv_index];
2062 disk = h->gendisk[drv_index];
2063
1da177e4 2064 /* make sure logical volume is NOT is use */
7c832835
BH		 2065 if (clear_all || (h->gendisk[0] == disk)) {
2066 if (drv->usage_count > 1)
2067 return -EBUSY;
2068 } else if (drv->usage_count > 0)
2069 return -EBUSY;
1da177e4 2070
ddd47442
MM		 2071 /* invalidate the devices and deregister the disk. If it is disk
2072 * zero do not deregister it but just zero out it's values. This
2073 * allows us to delete disk zero but keep the controller registered.
7c832835
BH		 2074 */
2075 if (h->gendisk[0] != disk) {
5a9df732
AB		 2076 struct request_queue *q = disk->queue;
2077 if (disk->flags & GENHD_FL_UP)
2078 del_gendisk(disk);
2079 if (q) {
2080 blk_cleanup_queue(q);
2081 /* Set drv->queue to NULL so that we do not try
2082 * to call blk_start_queue on this queue in the
2083 * interrupt handler
2084 */
2085 drv->queue = NULL;
2086 }
2087 /* If clear_all is set then we are deleting the logical
2088 * drive, not just refreshing its info. For drives
2089 * other than disk 0 we will call put_disk. We do not
2090 * do this for disk 0 as we need it to be able to
2091 * configure the controller.
a72da29b 2092 */
5a9df732
AB		 2093 if (clear_all){
2094 /* This isn't pretty, but we need to find the
2095 * disk in our array and NULL our the pointer.
2096 * This is so that we will call alloc_disk if
2097 * this index is used again later.
a72da29b 2098 */
5a9df732 2099 for (i=0; i < CISS_MAX_LUN; i++){
a72da29b 2100 if (h->gendisk[i] == disk) {
5a9df732
AB		 2101 h->gendisk[i] = NULL;
2102 break;
799202cb 2103 }
799202cb 2104 }
5a9df732 2105 put_disk(disk);
ddd47442 2106 }
799202cb
MM		 2107 } else {
2108 set_capacity(disk, 0);
ddd47442
MM		 2109 }
2110
2111 --h->num_luns;
2112 /* zero out the disk size info */
2113 drv->nr_blocks = 0;
2114 drv->block_size = 0;
2115 drv->heads = 0;
2116 drv->sectors = 0;
2117 drv->cylinders = 0;
2118 drv->raid_level = -1; /* This can be used as a flag variable to
2119 * indicate that this element of the drive
2120 * array is free.
7c832835
BH		 2121 */
2122
2123 if (clear_all) {
2124 /* check to see if it was the last disk */
2125 if (drv == h->drv + h->highest_lun) {
2126 /* if so, find the new hightest lun */
2127 int i, newhighest = -1;
a72da29b 2128 for (i = 0; i <= h->highest_lun; i++) {
7c832835 2129 /* if the disk has size > 0, it is available */
ddd47442 2130 if (h->drv[i].heads)
7c832835
BH		 2131 newhighest = i;
2132 }
2133 h->highest_lun = newhighest;
1da177e4 2134 }
ddd47442 2135
7c832835 2136 drv->LunID = 0;
ddd47442 2137 }
e2019b58 2138 return 0;
1da177e4 2139}
ddd47442 2140
b57695fe 2141static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
2142 size_t size, __u8 page_code, unsigned char *scsi3addr,
2143 int cmd_type)
1da177e4 2144{
7c832835 2145 ctlr_info_t *h = hba[ctlr];
1da177e4
LT		 2146 u64bit buff_dma_handle;
2147 int status = IO_OK;
2148
2149 c->cmd_type = CMD_IOCTL_PEND;
2150 c->Header.ReplyQueue = 0;
7c832835 2151 if (buff != NULL) {
1da177e4 2152 c->Header.SGList = 1;
7c832835 2153 c->Header.SGTotal = 1;
1da177e4
LT		 2154 } else {
2155 c->Header.SGList = 0;
7c832835 2156 c->Header.SGTotal = 0;
1da177e4
LT		 2157 }
2158 c->Header.Tag.lower = c->busaddr;
b57695fe 2159 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
1da177e4
LT		 2160
2161 c->Request.Type.Type = cmd_type;
2162 if (cmd_type == TYPE_CMD) {
7c832835
BH		 2163 switch (cmd) {
2164 case CISS_INQUIRY:
1da177e4 2165 /* are we trying to read a vital product page */
7c832835 2166 if (page_code != 0) {
1da177e4
LT		 2167 c->Request.CDB[1] = 0x01;
2168 c->Request.CDB[2] = page_code;
2169 }
2170 c->Request.CDBLen = 6;
7c832835 2171 c->Request.Type.Attribute = ATTR_SIMPLE;
1da177e4
LT		 2172 c->Request.Type.Direction = XFER_READ;
2173 c->Request.Timeout = 0;
7c832835
BH		 2174 c->Request.CDB[0] = CISS_INQUIRY;
2175 c->Request.CDB[4] = size & 0xFF;
2176 break;
1da177e4
LT		 2177 case CISS_REPORT_LOG:
2178 case CISS_REPORT_PHYS:
7c832835 2179 /* Talking to controller so It's a physical command
1da177e4 2180 mode = 00 target = 0. Nothing to write.
7c832835 2181 */
1da177e4
LT		 2182 c->Request.CDBLen = 12;
2183 c->Request.Type.Attribute = ATTR_SIMPLE;
2184 c->Request.Type.Direction = XFER_READ;
2185 c->Request.Timeout = 0;
2186 c->Request.CDB[0] = cmd;
7c832835 2187 c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
1da177e4
LT		 2188 c->Request.CDB[7] = (size >> 16) & 0xFF;
2189 c->Request.CDB[8] = (size >> 8) & 0xFF;
2190 c->Request.CDB[9] = size & 0xFF;
2191 break;
2192
2193 case CCISS_READ_CAPACITY:
1da177e4
LT		 2194 c->Request.CDBLen = 10;
2195 c->Request.Type.Attribute = ATTR_SIMPLE;
2196 c->Request.Type.Direction = XFER_READ;
2197 c->Request.Timeout = 0;
2198 c->Request.CDB[0] = cmd;
7c832835 2199 break;
00988a35 2200 case CCISS_READ_CAPACITY_16:
00988a35
MMOD		 2201 c->Request.CDBLen = 16;
2202 c->Request.Type.Attribute = ATTR_SIMPLE;
2203 c->Request.Type.Direction = XFER_READ;
2204 c->Request.Timeout = 0;
2205 c->Request.CDB[0] = cmd;
2206 c->Request.CDB[1] = 0x10;
2207 c->Request.CDB[10] = (size >> 24) & 0xFF;
2208 c->Request.CDB[11] = (size >> 16) & 0xFF;
2209 c->Request.CDB[12] = (size >> 8) & 0xFF;
2210 c->Request.CDB[13] = size & 0xFF;
2211 c->Request.Timeout = 0;
2212 c->Request.CDB[0] = cmd;
2213 break;
1da177e4
LT		 2214 case CCISS_CACHE_FLUSH:
2215 c->Request.CDBLen = 12;
2216 c->Request.Type.Attribute = ATTR_SIMPLE;
2217 c->Request.Type.Direction = XFER_WRITE;
2218 c->Request.Timeout = 0;
2219 c->Request.CDB[0] = BMIC_WRITE;
2220 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
7c832835 2221 break;
88f627ae 2222 case TEST_UNIT_READY:
88f627ae
SC		 2223 c->Request.CDBLen = 6;
2224 c->Request.Type.Attribute = ATTR_SIMPLE;
2225 c->Request.Type.Direction = XFER_NONE;
2226 c->Request.Timeout = 0;
2227 break;
1da177e4
LT		 2228 default:
2229 printk(KERN_WARNING
7c832835 2230 "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
e2019b58 2231 return IO_ERROR;
1da177e4
LT		 2232 }
2233 } else if (cmd_type == TYPE_MSG) {
2234 switch (cmd) {
7c832835 2235 case 0: /* ABORT message */
3da8b713 2236 c->Request.CDBLen = 12;
2237 c->Request.Type.Attribute = ATTR_SIMPLE;
2238 c->Request.Type.Direction = XFER_WRITE;
2239 c->Request.Timeout = 0;
7c832835
BH		 2240 c->Request.CDB[0] = cmd; /* abort */
2241 c->Request.CDB[1] = 0; /* abort a command */
3da8b713 2242 /* buff contains the tag of the command to abort */
2243 memcpy(&c->Request.CDB[4], buff, 8);
2244 break;
7c832835 2245 case 1: /* RESET message */
88f627ae 2246 c->Request.CDBLen = 16;
3da8b713 2247 c->Request.Type.Attribute = ATTR_SIMPLE;
88f627ae 2248 c->Request.Type.Direction = XFER_NONE;
3da8b713 2249 c->Request.Timeout = 0;
2250 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
7c832835 2251 c->Request.CDB[0] = cmd; /* reset */
88f627ae 2252 c->Request.CDB[1] = 0x03; /* reset a target */
00988a35 2253 break;
1da177e4
LT		 2254 case 3: /* No-Op message */
2255 c->Request.CDBLen = 1;
2256 c->Request.Type.Attribute = ATTR_SIMPLE;
2257 c->Request.Type.Direction = XFER_WRITE;
2258 c->Request.Timeout = 0;
2259 c->Request.CDB[0] = cmd;
2260 break;
2261 default:
2262 printk(KERN_WARNING
7c832835 2263 "cciss%d: unknown message type %d\n", ctlr, cmd);
1da177e4
LT		 2264 return IO_ERROR;
2265 }
2266 } else {
2267 printk(KERN_WARNING
7c832835 2268 "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1da177e4
LT		 2269 return IO_ERROR;
2270 }
2271 /* Fill in the scatter gather information */
2272 if (size > 0) {
2273 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
7c832835
BH		 2274 buff, size,
2275 PCI_DMA_BIDIRECTIONAL);
1da177e4
LT		 2276 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
2277 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
2278 c->SG[0].Len = size;
7c832835 2279 c->SG[0].Ext = 0; /* we are not chaining */
1da177e4
LT		 2280 }
2281 return status;
2282}
7c832835 2283
3c2ab402 2284static int check_target_status(ctlr_info_t *h, CommandList_struct *c)
2285{
2286 switch (c->err_info->ScsiStatus) {
2287 case SAM_STAT_GOOD:
2288 return IO_OK;
2289 case SAM_STAT_CHECK_CONDITION:
2290 switch (0xf & c->err_info->SenseInfo[2]) {
2291 case 0: return IO_OK; /* no sense */
2292 case 1: return IO_OK; /* recovered error */
2293 default:
2294 printk(KERN_WARNING "cciss%d: cmd 0x%02x "
2295 "check condition, sense key = 0x%02x\n",
2296 h->ctlr, c->Request.CDB[0],
2297 c->err_info->SenseInfo[2]);
2298 }
2299 break;
2300 default:
2301 printk(KERN_WARNING "cciss%d: cmd 0x%02x"
2302 "scsi status = 0x%02x\n", h->ctlr,
2303 c->Request.CDB[0], c->err_info->ScsiStatus);
2304 break;
2305 }
2306 return IO_ERROR;
2307}
2308
789a424a 2309static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c)
1da177e4 2310{
5390cfc3 2311 int return_status = IO_OK;
7c832835 2312
789a424a 2313 if (c->err_info->CommandStatus == CMD_SUCCESS)
2314 return IO_OK;
5390cfc3 2315
2316 switch (c->err_info->CommandStatus) {
2317 case CMD_TARGET_STATUS:
3c2ab402 2318 return_status = check_target_status(h, c);
5390cfc3 2319 break;
2320 case CMD_DATA_UNDERRUN:
2321 case CMD_DATA_OVERRUN:
2322 /* expected for inquiry and report lun commands */
2323 break;
2324 case CMD_INVALID:
789a424a 2325 printk(KERN_WARNING "cciss: cmd 0x%02x is "
5390cfc3 2326 "reported invalid\n", c->Request.CDB[0]);
2327 return_status = IO_ERROR;
2328 break;
2329 case CMD_PROTOCOL_ERR:
2330 printk(KERN_WARNING "cciss: cmd 0x%02x has "
2331 "protocol error \n", c->Request.CDB[0]);
2332 return_status = IO_ERROR;
2333 break;
2334 case CMD_HARDWARE_ERR:
2335 printk(KERN_WARNING "cciss: cmd 0x%02x had "
2336 " hardware error\n", c->Request.CDB[0]);
2337 return_status = IO_ERROR;
2338 break;
2339 case CMD_CONNECTION_LOST:
2340 printk(KERN_WARNING "cciss: cmd 0x%02x had "
2341 "connection lost\n", c->Request.CDB[0]);
2342 return_status = IO_ERROR;
2343 break;
2344 case CMD_ABORTED:
2345 printk(KERN_WARNING "cciss: cmd 0x%02x was "
2346 "aborted\n", c->Request.CDB[0]);
2347 return_status = IO_ERROR;
2348 break;
2349 case CMD_ABORT_FAILED:
2350 printk(KERN_WARNING "cciss: cmd 0x%02x reports "
2351 "abort failed\n", c->Request.CDB[0]);
2352 return_status = IO_ERROR;
2353 break;
2354 case CMD_UNSOLICITED_ABORT:
2355 printk(KERN_WARNING
2356 "cciss%d: unsolicited abort 0x%02x\n", h->ctlr,
2357 c->Request.CDB[0]);
789a424a 2358 return_status = IO_NEEDS_RETRY;
5390cfc3 2359 break;
2360 default:
2361 printk(KERN_WARNING "cciss: cmd 0x%02x returned "
2362 "unknown status %x\n", c->Request.CDB[0],
2363 c->err_info->CommandStatus);
2364 return_status = IO_ERROR;
7c832835 2365 }
789a424a 2366 return return_status;
2367}
2368
2369static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c,
2370 int attempt_retry)
2371{
2372 DECLARE_COMPLETION_ONSTACK(wait);
2373 u64bit buff_dma_handle;
2374 unsigned long flags;
2375 int return_status = IO_OK;
2376
2377resend_cmd2:
2378 c->waiting = &wait;
2379 /* Put the request on the tail of the queue and send it */
2380 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2381 addQ(&h->reqQ, c);
2382 h->Qdepth++;
2383 start_io(h);
2384 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2385
2386 wait_for_completion(&wait);
2387
2388 if (c->err_info->CommandStatus == 0 || !attempt_retry)
2389 goto command_done;
2390
2391 return_status = process_sendcmd_error(h, c);
2392
2393 if (return_status == IO_NEEDS_RETRY &&
2394 c->retry_count < MAX_CMD_RETRIES) {
2395 printk(KERN_WARNING "cciss%d: retrying 0x%02x\n", h->ctlr,
2396 c->Request.CDB[0]);
2397 c->retry_count++;
2398 /* erase the old error information */
2399 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
2400 return_status = IO_OK;
2401 INIT_COMPLETION(wait);
2402 goto resend_cmd2;
2403 }
5390cfc3 2404
2405command_done:
1da177e4 2406 /* unlock the buffers from DMA */
bb2a37bf
MM		 2407 buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
2408 buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
7c832835
BH		 2409 pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val,
2410 c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
5390cfc3 2411 return return_status;
2412}
2413
b57695fe 2414static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
2415 __u8 page_code, unsigned char scsi3addr[],
2416 int cmd_type)
5390cfc3 2417{
2418 ctlr_info_t *h = hba[ctlr];
2419 CommandList_struct *c;
2420 int return_status;
2421
2422 c = cmd_alloc(h, 0);
2423 if (!c)
2424 return -ENOMEM;
b57695fe 2425 return_status = fill_cmd(c, cmd, ctlr, buff, size, page_code,
2426 scsi3addr, cmd_type);
5390cfc3 2427 if (return_status == IO_OK)
789a424a 2428 return_status = sendcmd_withirq_core(h, c, 1);
2429
1da177e4 2430 cmd_free(h, c, 0);
7c832835 2431 return return_status;
1da177e4 2432}
7c832835 2433
1da177e4 2434static void cciss_geometry_inquiry(int ctlr, int logvol,
00988a35 2435 int withirq, sector_t total_size,
7c832835
BH		 2436 unsigned int block_size,
2437 InquiryData_struct *inq_buff,
2438 drive_info_struct *drv)
1da177e4
LT		 2439{
2440 int return_code;
00988a35 2441 unsigned long t;
b57695fe 2442 unsigned char scsi3addr[8];
00988a35 2443
1da177e4 2444 memset(inq_buff, 0, sizeof(InquiryData_struct));
b57695fe 2445 log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
1da177e4
LT		 2446 if (withirq)
2447 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
b57695fe 2448 inq_buff, sizeof(*inq_buff),
2449 0xC1, scsi3addr, TYPE_CMD);
1da177e4
LT		 2450 else
2451 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
b57695fe 2452 sizeof(*inq_buff), 0xC1, scsi3addr,
7c832835 2453 TYPE_CMD);
1da177e4 2454 if (return_code == IO_OK) {
7c832835 2455 if (inq_buff->data_byte[8] == 0xFF) {
1da177e4 2456 printk(KERN_WARNING
7c832835
BH		 2457 "cciss: reading geometry failed, volume "
2458 "does not support reading geometry\n");
1da177e4 2459 drv->heads = 255;
7c832835 2460 drv->sectors = 32; // Sectors per track
7f42d3b8 2461 drv->cylinders = total_size + 1;
89f97ad1 2462 drv->raid_level = RAID_UNKNOWN;
1da177e4 2463 } else {
1da177e4
LT		 2464 drv->heads = inq_buff->data_byte[6];
2465 drv->sectors = inq_buff->data_byte[7];
2466 drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
2467 drv->cylinders += inq_buff->data_byte[5];
2468 drv->raid_level = inq_buff->data_byte[8];
3f7705ea
MW		 2469 }
2470 drv->block_size = block_size;
97c06978 2471 drv->nr_blocks = total_size + 1;
3f7705ea
MW		 2472 t = drv->heads * drv->sectors;
2473 if (t > 1) {
97c06978
MMOD		 2474 sector_t real_size = total_size + 1;
2475 unsigned long rem = sector_div(real_size, t);
3f7705ea 2476 if (rem)
97c06978
MMOD		 2477 real_size++;
2478 drv->cylinders = real_size;
1da177e4 2479 }
7c832835 2480 } else { /* Get geometry failed */
1da177e4
LT		 2481 printk(KERN_WARNING "cciss: reading geometry failed\n");
2482 }
cc088d10 2483 printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n",
7c832835 2484 drv->heads, drv->sectors, drv->cylinders);
1da177e4 2485}
7c832835 2486
1da177e4 2487static void
00988a35 2488cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size,
7c832835 2489 unsigned int *block_size)
1da177e4 2490{
00988a35 2491 ReadCapdata_struct *buf;
1da177e4 2492 int return_code;
b57695fe 2493 unsigned char scsi3addr[8];
1aebe187
MK		 2494
2495 buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
2496 if (!buf) {
00988a35
MMOD		 2497 printk(KERN_WARNING "cciss: out of memory\n");
2498 return;
2499 }
1aebe187 2500
b57695fe 2501 log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
1da177e4
LT		 2502 if (withirq)
2503 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
00988a35 2504 ctlr, buf, sizeof(ReadCapdata_struct),
b57695fe 2505 0, scsi3addr, TYPE_CMD);
1da177e4
LT		 2506 else
2507 return_code = sendcmd(CCISS_READ_CAPACITY,
00988a35 2508 ctlr, buf, sizeof(ReadCapdata_struct),
b57695fe 2509 0, scsi3addr, TYPE_CMD);
1da177e4 2510 if (return_code == IO_OK) {
4c1f2b31
AV		 2511 *total_size = be32_to_cpu(*(__be32 *) buf->total_size);
2512 *block_size = be32_to_cpu(*(__be32 *) buf->block_size);
7c832835 2513 } else { /* read capacity command failed */
1da177e4
LT		 2514 printk(KERN_WARNING "cciss: read capacity failed\n");
2515 *total_size = 0;
2516 *block_size = BLOCK_SIZE;
2517 }
97c06978 2518 if (*total_size != 0)
7b92aadf 2519 printk(KERN_INFO " blocks= %llu block_size= %d\n",
97c06978 2520 (unsigned long long)*total_size+1, *block_size);
00988a35 2521 kfree(buf);
00988a35
MMOD		 2522}
2523
2524static void
2525cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size)
2526{
2527 ReadCapdata_struct_16 *buf;
2528 int return_code;
b57695fe 2529 unsigned char scsi3addr[8];
1aebe187
MK		 2530
2531 buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL);
2532 if (!buf) {
00988a35
MMOD		 2533 printk(KERN_WARNING "cciss: out of memory\n");
2534 return;
2535 }
1aebe187 2536
b57695fe 2537 log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
00988a35
MMOD		 2538 if (withirq) {
2539 return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16,
2540 ctlr, buf, sizeof(ReadCapdata_struct_16),
b57695fe 2541 0, scsi3addr, TYPE_CMD);
00988a35
MMOD		 2542 }
2543 else {
2544 return_code = sendcmd(CCISS_READ_CAPACITY_16,
2545 ctlr, buf, sizeof(ReadCapdata_struct_16),
b57695fe 2546 0, scsi3addr, TYPE_CMD);
00988a35
MMOD		 2547 }
2548 if (return_code == IO_OK) {
4c1f2b31
AV		 2549 *total_size = be64_to_cpu(*(__be64 *) buf->total_size);
2550 *block_size = be32_to_cpu(*(__be32 *) buf->block_size);
00988a35
MMOD		 2551 } else { /* read capacity command failed */
2552 printk(KERN_WARNING "cciss: read capacity failed\n");
2553 *total_size = 0;
2554 *block_size = BLOCK_SIZE;
2555 }
7b92aadf 2556 printk(KERN_INFO " blocks= %llu block_size= %d\n",
97c06978 2557 (unsigned long long)*total_size+1, *block_size);
00988a35 2558 kfree(buf);
1da177e4
LT		 2559}
2560
1da177e4
LT		 2561static int cciss_revalidate(struct gendisk *disk)
2562{
2563 ctlr_info_t *h = get_host(disk);
2564 drive_info_struct *drv = get_drv(disk);
2565 int logvol;
7c832835 2566 int FOUND = 0;
1da177e4 2567 unsigned int block_size;
00988a35 2568 sector_t total_size;
1da177e4
LT		 2569 InquiryData_struct *inq_buff = NULL;
2570
7c832835
BH		 2571 for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) {
2572 if (h->drv[logvol].LunID == drv->LunID) {
2573 FOUND = 1;
1da177e4
LT		 2574 break;
2575 }
2576 }
2577
7c832835
BH		 2578 if (!FOUND)
2579 return 1;
1da177e4 2580
7c832835
BH		 2581 inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
2582 if (inq_buff == NULL) {
2583 printk(KERN_WARNING "cciss: out of memory\n");
7c832835
BH		 2584 return 1;
2585 }
00988a35
MMOD		 2586 if (h->cciss_read == CCISS_READ_10) {
2587 cciss_read_capacity(h->ctlr, logvol, 1,
2588 &total_size, &block_size);
2589 } else {
2590 cciss_read_capacity_16(h->ctlr, logvol, 1,
2591 &total_size, &block_size);
2592 }
7c832835
BH		 2593 cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size,
2594 inq_buff, drv);
1da177e4 2595
e1defc4f 2596 blk_queue_logical_block_size(drv->queue, drv->block_size);
1da177e4
LT		 2597 set_capacity(disk, drv->nr_blocks);
2598
1da177e4
LT		 2599 kfree(inq_buff);
2600 return 0;
2601}
2602
2603/*
2604 * Wait polling for a command to complete.
2605 * The memory mapped FIFO is polled for the completion.
2606 * Used only at init time, interrupts from the HBA are disabled.
2607 */
2608static unsigned long pollcomplete(int ctlr)
2609{
2610 unsigned long done;
2611 int i;
2612
2613 /* Wait (up to 20 seconds) for a command to complete */
2614
2615 for (i = 20 * HZ; i > 0; i--) {
2616 done = hba[ctlr]->access.command_completed(hba[ctlr]);
86e84862
NA		 2617 if (done == FIFO_EMPTY)
2618 schedule_timeout_uninterruptible(1);
2619 else
e2019b58 2620 return done;
1da177e4
LT		 2621 }
2622 /* Invalid address to tell caller we ran out of time */
2623 return 1;
2624}
3da8b713 2625
4a4b2d76
SC		 2626/* Send command c to controller h and poll for it to complete.
2627 * Turns interrupts off on the board. Used at driver init time
2628 * and during SCSI error recovery.
1da177e4 2629 */
4a4b2d76 2630static int sendcmd_core(ctlr_info_t *h, CommandList_struct *c)
1da177e4 2631{
1da177e4
LT		 2632 int i;
2633 unsigned long complete;
4a4b2d76 2634 int status = IO_ERROR;
1da177e4 2635 u64bit buff_dma_handle;
1da177e4 2636
4a4b2d76
SC		 2637resend_cmd1:
2638
2639 /* Disable interrupt on the board. */
2640 h->access.set_intr_mask(h, CCISS_INTR_OFF);
7c832835 2641
1da177e4 2642 /* Make sure there is room in the command FIFO */
7c832835 2643 /* Actually it should be completely empty at this time */
3da8b713 2644 /* unless we are in here doing error handling for the scsi */
2645 /* tape side of the driver. */
7c832835 2646 for (i = 200000; i > 0; i--) {
1da177e4 2647 /* if fifo isn't full go */
4a4b2d76 2648 if (!(h->access.fifo_full(h)))
7c832835 2649 break;
7c832835
BH		 2650 udelay(10);
2651 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
4a4b2d76 2652 " waiting!\n", h->ctlr);
7c832835 2653 }
4a4b2d76 2654 h->access.submit_command(h, c); /* Send the cmd */
3da8b713 2655 do {
4a4b2d76 2656 complete = pollcomplete(h->ctlr);
1da177e4
LT		 2657
2658#ifdef CCISS_DEBUG
3da8b713 2659 printk(KERN_DEBUG "cciss: command completed\n");
7c832835 2660#endif /* CCISS_DEBUG */
1da177e4 2661
3da8b713 2662 if (complete == 1) {
7c832835
BH		 2663 printk(KERN_WARNING
2664 "cciss cciss%d: SendCmd Timeout out, "
4a4b2d76 2665 "No command list address returned!\n", h->ctlr);
3da8b713 2666 status = IO_ERROR;
3da8b713 2667 break;
2668 }
2669
72f9f132 2670 /* Make sure it's the command we're expecting. */
4a4b2d76 2671 if ((complete & ~CISS_ERROR_BIT) != c->busaddr) {
72f9f132 2672 printk(KERN_WARNING "cciss%d: Unexpected command "
2673 "completion.\n", h->ctlr);
4a4b2d76
SC		 2674 continue;
2675 }
2676
2677 /* It is our command. If no error, we're done. */
2678 if (!(complete & CISS_ERROR_BIT)) {
2679 status = IO_OK;
2680 break;
2681 }
2682
2683 /* There is an error... */
2684
2685 /* if data overrun or underun on Report command ignore it */
2686 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
2687 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
2688 (c->Request.CDB[0] == CISS_INQUIRY)) &&
2689 ((c->err_info->CommandStatus == CMD_DATA_OVERRUN) ||
2690 (c->err_info->CommandStatus == CMD_DATA_UNDERRUN))) {
2691 complete = c->busaddr;
2692 status = IO_OK;
2693 break;
1da177e4 2694 }
4a4b2d76
SC		 2695
2696 if (c->err_info->CommandStatus == CMD_UNSOLICITED_ABORT) {
2697 printk(KERN_WARNING "cciss%d: unsolicited abort %p\n",
2698 h->ctlr, c);
2699 if (c->retry_count < MAX_CMD_RETRIES) {
2700 printk(KERN_WARNING "cciss%d: retrying %p\n",
2701 h->ctlr, c);
2702 c->retry_count++;
2703 /* erase the old error information */
2704 memset(c->err_info, 0, sizeof(c->err_info));
2705 goto resend_cmd1;
3da8b713 2706 }
4a4b2d76
SC		 2707 printk(KERN_WARNING "cciss%d: retried %p too many "
2708 "times\n", h->ctlr, c);
2709 status = IO_ERROR;
3c2ab402 2710 break;
4a4b2d76
SC		 2711 }
2712
2713 if (c->err_info->CommandStatus == CMD_UNABORTABLE) {
2714 printk(KERN_WARNING "cciss%d: command could not be "
2715 "aborted.\n", h->ctlr);
2716 status = IO_ERROR;
3c2ab402 2717 break;
4a4b2d76
SC		 2718 }
2719
4a4b2d76 2720 if (c->err_info->CommandStatus == CMD_TARGET_STATUS) {
3c2ab402 2721 status = check_target_status(h, c);
2722 break;
4a4b2d76
SC		 2723 }
2724
3c2ab402 2725 printk(KERN_WARNING "cciss%d: sendcmd error\n", h->ctlr);
2726 printk(KERN_WARNING "cmd = 0x%02x, CommandStatus = 0x%02x\n",
2727 c->Request.CDB[0], c->err_info->CommandStatus);
4a4b2d76 2728 status = IO_ERROR;
3c2ab402 2729 break;
4a4b2d76
SC		 2730
2731 } while (1);
7c832835 2732
1da177e4 2733 /* unlock the data buffer from DMA */
bb2a37bf
MM		 2734 buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
2735 buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
4a4b2d76 2736 pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val,
7c832835 2737 c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
4a4b2d76
SC		 2738 return status;
2739}
2740
2741/*
2742 * Send a command to the controller, and wait for it to complete.
2743 * Used at init time, and during SCSI error recovery.
2744 */
2745static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size,
4a4b2d76
SC		 2746 __u8 page_code, unsigned char *scsi3addr, int cmd_type)
2747{
2748 CommandList_struct *c;
2749 int status;
2750
2751 c = cmd_alloc(hba[ctlr], 1);
2752 if (!c) {
2753 printk(KERN_WARNING "cciss: unable to get memory");
2754 return IO_ERROR;
2755 }
b57695fe 2756 status = fill_cmd(c, cmd, ctlr, buff, size, page_code,
2757 scsi3addr, cmd_type);
4a4b2d76
SC		 2758 if (status == IO_OK)
2759 status = sendcmd_core(hba[ctlr], c);
2760 cmd_free(hba[ctlr], c, 1);
e2019b58 2761 return status;
7c832835
BH		 2762}
2763
1da177e4
LT		 2764/*
2765 * Map (physical) PCI mem into (virtual) kernel space
2766 */
2767static void __iomem *remap_pci_mem(ulong base, ulong size)
2768{
7c832835
BH		 2769 ulong page_base = ((ulong) base) & PAGE_MASK;
2770 ulong page_offs = ((ulong) base) - page_base;
2771 void __iomem *page_remapped = ioremap(page_base, page_offs + size);
1da177e4 2772
7c832835 2773 return page_remapped ? (page_remapped + page_offs) : NULL;
1da177e4
LT		 2774}
2775
7c832835
BH		 2776/*
2777 * Takes jobs of the Q and sends them to the hardware, then puts it on
2778 * the Q to wait for completion.
2779 */
2780static void start_io(ctlr_info_t *h)
1da177e4
LT		 2781{
2782 CommandList_struct *c;
7c832835 2783
8a3173de
JA		 2784 while (!hlist_empty(&h->reqQ)) {
2785 c = hlist_entry(h->reqQ.first, CommandList_struct, list);
1da177e4
LT		 2786 /* can't do anything if fifo is full */
2787 if ((h->access.fifo_full(h))) {
2788 printk(KERN_WARNING "cciss: fifo full\n");
2789 break;
2790 }
2791
7c832835 2792 /* Get the first entry from the Request Q */
8a3173de 2793 removeQ(c);
1da177e4 2794 h->Qdepth--;
7c832835
BH		 2795
2796 /* Tell the controller execute command */
1da177e4 2797 h->access.submit_command(h, c);
7c832835
BH		 2798
2799 /* Put job onto the completed Q */
8a3173de 2800 addQ(&h->cmpQ, c);
1da177e4
LT		 2801 }
2802}
7c832835 2803
1da177e4
LT		 2804/* Assumes that CCISS_LOCK(h->ctlr) is held. */
2805/* Zeros out the error record and then resends the command back */
2806/* to the controller */
7c832835 2807static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c)
1da177e4
LT		 2808{
2809 /* erase the old error information */
2810 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
2811
2812 /* add it to software queue and then send it to the controller */
8a3173de 2813 addQ(&h->reqQ, c);
1da177e4 2814 h->Qdepth++;
7c832835 2815 if (h->Qdepth > h->maxQsinceinit)
1da177e4
LT		 2816 h->maxQsinceinit = h->Qdepth;
2817
2818 start_io(h);
2819}
a9925a06 2820
1a614f50
SC		 2821static inline unsigned int make_status_bytes(unsigned int scsi_status_byte,
2822 unsigned int msg_byte, unsigned int host_byte,
2823 unsigned int driver_byte)
2824{
2825 /* inverse of macros in scsi.h */
2826 return (scsi_status_byte & 0xff) |
2827 ((msg_byte & 0xff) << 8) |
2828 ((host_byte & 0xff) << 16) |
2829 ((driver_byte & 0xff) << 24);
2830}
2831
0a9279cc
MM		 2832static inline int evaluate_target_status(ctlr_info_t *h,
2833 CommandList_struct *cmd, int *retry_cmd)
03bbfee5
MMOD		 2834{
2835 unsigned char sense_key;
1a614f50
SC		 2836 unsigned char status_byte, msg_byte, host_byte, driver_byte;
2837 int error_value;
2838
0a9279cc 2839 *retry_cmd = 0;
1a614f50
SC		 2840 /* If we get in here, it means we got "target status", that is, scsi status */
2841 status_byte = cmd->err_info->ScsiStatus;
2842 driver_byte = DRIVER_OK;
2843 msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */
2844
2845 if (blk_pc_request(cmd->rq))
2846 host_byte = DID_PASSTHROUGH;
2847 else
2848 host_byte = DID_OK;
2849
2850 error_value = make_status_bytes(status_byte, msg_byte,
2851 host_byte, driver_byte);
03bbfee5 2852
1a614f50 2853 if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) {
03bbfee5
MMOD		 2854 if (!blk_pc_request(cmd->rq))
2855 printk(KERN_WARNING "cciss: cmd %p "
2856 "has SCSI Status 0x%x\n",
2857 cmd, cmd->err_info->ScsiStatus);
1a614f50 2858 return error_value;
03bbfee5
MMOD		 2859 }
2860
2861 /* check the sense key */
2862 sense_key = 0xf & cmd->err_info->SenseInfo[2];
2863 /* no status or recovered error */
1a614f50
SC		 2864 if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq))
2865 error_value = 0;
03bbfee5 2866
0a9279cc
MM		 2867 if (check_for_unit_attention(h, cmd)) {
2868 *retry_cmd = !blk_pc_request(cmd->rq);
2869 return 0;
2870 }
2871
03bbfee5 2872 if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */
1a614f50 2873 if (error_value != 0)
03bbfee5
MMOD		 2874 printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION"
2875 " sense key = 0x%x\n", cmd, sense_key);
1a614f50 2876 return error_value;
03bbfee5
MMOD		 2877 }
2878
2879 /* SG_IO or similar, copy sense data back */
2880 if (cmd->rq->sense) {
2881 if (cmd->rq->sense_len > cmd->err_info->SenseLen)
2882 cmd->rq->sense_len = cmd->err_info->SenseLen;
2883 memcpy(cmd->rq->sense, cmd->err_info->SenseInfo,
2884 cmd->rq->sense_len);
2885 } else
2886 cmd->rq->sense_len = 0;
2887
1a614f50 2888 return error_value;
03bbfee5
MMOD		 2889}
2890
7c832835 2891/* checks the status of the job and calls complete buffers to mark all
a9925a06
JA		 2892 * buffers for the completed job. Note that this function does not need
2893 * to hold the hba/queue lock.
7c832835
BH		 2894 */
2895static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
2896 int timeout)
1da177e4 2897{
1da177e4 2898 int retry_cmd = 0;
198b7660
MMOD		 2899 struct request *rq = cmd->rq;
2900
2901 rq->errors = 0;
7c832835 2902
1da177e4 2903 if (timeout)
1a614f50 2904 rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT);
1da177e4 2905
d38ae168
MMOD		 2906 if (cmd->err_info->CommandStatus == 0) /* no error has occurred */
2907 goto after_error_processing;
7c832835 2908
d38ae168 2909 switch (cmd->err_info->CommandStatus) {
d38ae168 2910 case CMD_TARGET_STATUS:
0a9279cc 2911 rq->errors = evaluate_target_status(h, cmd, &retry_cmd);
d38ae168
MMOD		 2912 break;
2913 case CMD_DATA_UNDERRUN:
03bbfee5
MMOD		 2914 if (blk_fs_request(cmd->rq)) {
2915 printk(KERN_WARNING "cciss: cmd %p has"
2916 " completed with data underrun "
2917 "reported\n", cmd);
c3a4d78c 2918 cmd->rq->resid_len = cmd->err_info->ResidualCnt;
03bbfee5 2919 }
d38ae168
MMOD		 2920 break;
2921 case CMD_DATA_OVERRUN:
03bbfee5
MMOD		 2922 if (blk_fs_request(cmd->rq))
2923 printk(KERN_WARNING "cciss: cmd %p has"
2924 " completed with data overrun "
2925 "reported\n", cmd);
d38ae168
MMOD		 2926 break;
2927 case CMD_INVALID:
2928 printk(KERN_WARNING "cciss: cmd %p is "
2929 "reported invalid\n", cmd);
1a614f50
SC		 2930 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2931 cmd->err_info->CommandStatus, DRIVER_OK,
2932 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
d38ae168
MMOD		 2933 break;
2934 case CMD_PROTOCOL_ERR:
2935 printk(KERN_WARNING "cciss: cmd %p has "
2936 "protocol error \n", cmd);
1a614f50
SC		 2937 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2938 cmd->err_info->CommandStatus, DRIVER_OK,
2939 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
d38ae168
MMOD		 2940 break;
2941 case CMD_HARDWARE_ERR:
2942 printk(KERN_WARNING "cciss: cmd %p had "
2943 " hardware error\n", cmd);
1a614f50
SC		 2944 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2945 cmd->err_info->CommandStatus, DRIVER_OK,
2946 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
d38ae168
MMOD		 2947 break;
2948 case CMD_CONNECTION_LOST:
2949 printk(KERN_WARNING "cciss: cmd %p had "
2950 "connection lost\n", cmd);
1a614f50
SC		 2951 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2952 cmd->err_info->CommandStatus, DRIVER_OK,
2953 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
d38ae168
MMOD		 2954 break;
2955 case CMD_ABORTED:
2956 printk(KERN_WARNING "cciss: cmd %p was "
2957 "aborted\n", cmd);
1a614f50
SC		 2958 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2959 cmd->err_info->CommandStatus, DRIVER_OK,
2960 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT);
d38ae168
MMOD		 2961 break;
2962 case CMD_ABORT_FAILED:
2963 printk(KERN_WARNING "cciss: cmd %p reports "
2964 "abort failed\n", cmd);
1a614f50
SC		 2965 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2966 cmd->err_info->CommandStatus, DRIVER_OK,
2967 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
d38ae168
MMOD		 2968 break;
2969 case CMD_UNSOLICITED_ABORT:
2970 printk(KERN_WARNING "cciss%d: unsolicited "
2971 "abort %p\n", h->ctlr, cmd);
2972 if (cmd->retry_count < MAX_CMD_RETRIES) {
2973 retry_cmd = 1;
2974 printk(KERN_WARNING
2975 "cciss%d: retrying %p\n", h->ctlr, cmd);
2976 cmd->retry_count++;
2977 } else
2978 printk(KERN_WARNING
2979 "cciss%d: %p retried too "
2980 "many times\n", h->ctlr, cmd);
1a614f50
SC		 2981 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2982 cmd->err_info->CommandStatus, DRIVER_OK,
2983 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT);
d38ae168
MMOD		 2984 break;
2985 case CMD_TIMEOUT:
2986 printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd);
1a614f50
SC		 2987 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2988 cmd->err_info->CommandStatus, DRIVER_OK,
2989 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
d38ae168
MMOD		 2990 break;
2991 default:
2992 printk(KERN_WARNING "cciss: cmd %p returned "
2993 "unknown status %x\n", cmd,
2994 cmd->err_info->CommandStatus);
1a614f50
SC		 2995 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2996 cmd->err_info->CommandStatus, DRIVER_OK,
2997 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
1da177e4 2998 }
d38ae168
MMOD		 2999
3000after_error_processing:
3001
1da177e4 3002 /* We need to return this command */
7c832835
BH		 3003 if (retry_cmd) {
3004 resend_cciss_cmd(h, cmd);
1da177e4 3005 return;
7c832835 3006 }
03bbfee5 3007 cmd->rq->completion_data = cmd;
a9925a06 3008 blk_complete_request(cmd->rq);
1da177e4
LT		 3009}
3010
7c832835
BH		 3011/*
3012 * Get a request and submit it to the controller.
1da177e4 3013 */
165125e1 3014static void do_cciss_request(struct request_queue *q)
1da177e4 3015{
7c832835 3016 ctlr_info_t *h = q->queuedata;
1da177e4 3017 CommandList_struct *c;
00988a35
MMOD		 3018 sector_t start_blk;
3019 int seg;
1da177e4
LT		 3020 struct request *creq;
3021 u64bit temp64;
3022 struct scatterlist tmp_sg[MAXSGENTRIES];
3023 drive_info_struct *drv;
3024 int i, dir;
3025
3026 /* We call start_io here in case there is a command waiting on the
3027 * queue that has not been sent.
7c832835 3028 */
1da177e4
LT		 3029 if (blk_queue_plugged(q))
3030 goto startio;
3031
7c832835 3032 queue:
9934c8c0 3033 creq = blk_peek_request(q);
1da177e4
LT		 3034 if (!creq)
3035 goto startio;
3036
089fe1b2 3037 BUG_ON(creq->nr_phys_segments > MAXSGENTRIES);
1da177e4 3038
7c832835 3039 if ((c = cmd_alloc(h, 1)) == NULL)
1da177e4
LT		 3040 goto full;
3041
9934c8c0 3042 blk_start_request(creq);
1da177e4
LT		 3043
3044 spin_unlock_irq(q->queue_lock);
3045
3046 c->cmd_type = CMD_RWREQ;
3047 c->rq = creq;
7c832835
BH		 3048
3049 /* fill in the request */
1da177e4 3050 drv = creq->rq_disk->private_data;
7c832835 3051 c->Header.ReplyQueue = 0; // unused in simple mode
33079b21
MM		 3052 /* got command from pool, so use the command block index instead */
3053 /* for direct lookups. */
3054 /* The first 2 bits are reserved for controller error reporting. */
3055 c->Header.Tag.lower = (c->cmdindex << 3);
7c832835
BH		 3056 c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */
3057 c->Header.LUN.LogDev.VolId = drv->LunID;
1da177e4 3058 c->Header.LUN.LogDev.Mode = 1;
7c832835
BH		 3059 c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
3060 c->Request.Type.Type = TYPE_CMD; // It is a command.
3061 c->Request.Type.Attribute = ATTR_SIMPLE;
3062 c->Request.Type.Direction =
a52de245 3063 (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE;
7c832835
BH		 3064 c->Request.Timeout = 0; // Don't time out
3065 c->Request.CDB[0] =
00988a35 3066 (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write;
83096ebf 3067 start_blk = blk_rq_pos(creq);
1da177e4 3068#ifdef CCISS_DEBUG
83096ebf
TH		 3069 printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",
3070 (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq));
7c832835 3071#endif /* CCISS_DEBUG */
1da177e4 3072
45711f1a 3073 sg_init_table(tmp_sg, MAXSGENTRIES);
1da177e4
LT		 3074 seg = blk_rq_map_sg(q, creq, tmp_sg);
3075
7c832835 3076 /* get the DMA records for the setup */
1da177e4
LT		 3077 if (c->Request.Type.Direction == XFER_READ)
3078 dir = PCI_DMA_FROMDEVICE;
3079 else
3080 dir = PCI_DMA_TODEVICE;
3081
7c832835 3082 for (i = 0; i < seg; i++) {
1da177e4 3083 c->SG[i].Len = tmp_sg[i].length;
45711f1a 3084 temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]),
7c832835
BH		 3085 tmp_sg[i].offset,
3086 tmp_sg[i].length, dir);
1da177e4 3087 c->SG[i].Addr.lower = temp64.val32.lower;
7c832835
BH		 3088 c->SG[i].Addr.upper = temp64.val32.upper;
3089 c->SG[i].Ext = 0; // we are not chaining
1da177e4 3090 }
7c832835
BH		 3091 /* track how many SG entries we are using */
3092 if (seg > h->maxSG)
3093 h->maxSG = seg;
1da177e4
LT		 3094
3095#ifdef CCISS_DEBUG
83096ebf
TH		 3096 printk(KERN_DEBUG "cciss: Submitting %u sectors in %d segments\n",
3097 blk_rq_sectors(creq), seg);
7c832835 3098#endif /* CCISS_DEBUG */
1da177e4
LT		 3099
3100 c->Header.SGList = c->Header.SGTotal = seg;
03bbfee5
MMOD		 3101 if (likely(blk_fs_request(creq))) {
3102 if(h->cciss_read == CCISS_READ_10) {
3103 c->Request.CDB[1] = 0;
3104 c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB
3105 c->Request.CDB[3] = (start_blk >> 16) & 0xff;
3106 c->Request.CDB[4] = (start_blk >> 8) & 0xff;
3107 c->Request.CDB[5] = start_blk & 0xff;
3108 c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB
83096ebf
TH		 3109 c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff;
3110 c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff;
03bbfee5
MMOD		 3111 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
3112 } else {
582539e5
RD		 3113 u32 upper32 = upper_32_bits(start_blk);
3114
03bbfee5
MMOD		 3115 c->Request.CDBLen = 16;
3116 c->Request.CDB[1]= 0;
582539e5
RD		 3117 c->Request.CDB[2]= (upper32 >> 24) & 0xff; //MSB
3118 c->Request.CDB[3]= (upper32 >> 16) & 0xff;
3119 c->Request.CDB[4]= (upper32 >> 8) & 0xff;
3120 c->Request.CDB[5]= upper32 & 0xff;
03bbfee5
MMOD		 3121 c->Request.CDB[6]= (start_blk >> 24) & 0xff;
3122 c->Request.CDB[7]= (start_blk >> 16) & 0xff;
3123 c->Request.CDB[8]= (start_blk >> 8) & 0xff;
3124 c->Request.CDB[9]= start_blk & 0xff;
83096ebf
TH		 3125 c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff;
3126 c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff;
3127 c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff;
3128 c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff;
03bbfee5
MMOD		 3129 c->Request.CDB[14] = c->Request.CDB[15] = 0;
3130 }
3131 } else if (blk_pc_request(creq)) {
3132 c->Request.CDBLen = creq->cmd_len;
3133 memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB);
00988a35 3134 } else {
03bbfee5
MMOD		 3135 printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type);
3136 BUG();
00988a35 3137 }
1da177e4
LT		 3138
3139 spin_lock_irq(q->queue_lock);
3140
8a3173de 3141 addQ(&h->reqQ, c);
1da177e4 3142 h->Qdepth++;
7c832835
BH		 3143 if (h->Qdepth > h->maxQsinceinit)
3144 h->maxQsinceinit = h->Qdepth;
1da177e4
LT		 3145
3146 goto queue;
00988a35 3147full:
1da177e4 3148 blk_stop_queue(q);
00988a35 3149startio:
1da177e4
LT		 3150 /* We will already have the driver lock here so not need
3151 * to lock it.
7c832835 3152 */
1da177e4
LT		 3153 start_io(h);
3154}
3155
3da8b713 3156static inline unsigned long get_next_completion(ctlr_info_t *h)
3157{
3da8b713 3158 return h->access.command_completed(h);
3da8b713 3159}
3160
3161static inline int interrupt_pending(ctlr_info_t *h)
3162{
3da8b713 3163 return h->access.intr_pending(h);
3da8b713 3164}
3165
3166static inline long interrupt_not_for_us(ctlr_info_t *h)
3167{
7c832835 3168 return (((h->access.intr_pending(h) == 0) ||
3da8b713 3169 (h->interrupts_enabled == 0)));
3da8b713 3170}
3171
7d12e780 3172static irqreturn_t do_cciss_intr(int irq, void *dev_id)
1da177e4
LT		 3173{
3174 ctlr_info_t *h = dev_id;
3175 CommandList_struct *c;
3176 unsigned long flags;
33079b21 3177 __u32 a, a1, a2;
1da177e4 3178
3da8b713 3179 if (interrupt_not_for_us(h))
1da177e4 3180 return IRQ_NONE;
1da177e4
LT		 3181 /*
3182 * If there are completed commands in the completion queue,
3183 * we had better do something about it.
3184 */
3185 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
3da8b713 3186 while (interrupt_pending(h)) {
7c832835 3187 while ((a = get_next_completion(h)) != FIFO_EMPTY) {
1da177e4 3188 a1 = a;
33079b21
MM		 3189 if ((a & 0x04)) {
3190 a2 = (a >> 3);
f880632f 3191 if (a2 >= h->nr_cmds) {
7c832835
BH		 3192 printk(KERN_WARNING
3193 "cciss: controller cciss%d failed, stopping.\n",
3194 h->ctlr);
33079b21
MM		 3195 fail_all_cmds(h->ctlr);
3196 return IRQ_HANDLED;
3197 }
3198
3199 c = h->cmd_pool + a2;
3200 a = c->busaddr;
3201
3202 } else {
8a3173de
JA		 3203 struct hlist_node *tmp;
3204
7c832835 3205 a &= ~3;
8a3173de
JA		 3206 c = NULL;
3207 hlist_for_each_entry(c, tmp, &h->cmpQ, list) {
3208 if (c->busaddr == a)
7c832835
BH		 3209 break;
3210 }
33079b21 3211 }
1da177e4
LT		 3212 /*
3213 * If we've found the command, take it off the
3214 * completion Q and free it
3215 */
8a3173de
JA		 3216 if (c && c->busaddr == a) {
3217 removeQ(c);
1da177e4
LT		 3218 if (c->cmd_type == CMD_RWREQ) {
3219 complete_command(h, c, 0);
3220 } else if (c->cmd_type == CMD_IOCTL_PEND) {
3221 complete(c->waiting);
3222 }
3223# ifdef CONFIG_CISS_SCSI_TAPE
3224 else if (c->cmd_type == CMD_SCSI)
3225 complete_scsi_command(c, 0, a1);
3226# endif
3227 continue;
3228 }
3229 }
3230 }
3231
1da177e4
LT		 3232 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
3233 return IRQ_HANDLED;
3234}
7c832835 3235
0a9279cc
MM		 3236static int scan_thread(void *data)
3237{
3238 ctlr_info_t *h = data;
3239 int rc;
3240 DECLARE_COMPLETION_ONSTACK(wait);
3241 h->rescan_wait = &wait;
3242
3243 for (;;) {
3244 rc = wait_for_completion_interruptible(&wait);
3245 if (kthread_should_stop())
3246 break;
3247 if (!rc)
3248 rebuild_lun_table(h, 0);
3249 }
3250 return 0;
3251}
3252
3253static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c)
3254{
3255 if (c->err_info->SenseInfo[2] != UNIT_ATTENTION)
3256 return 0;
3257
3258 switch (c->err_info->SenseInfo[12]) {
3259 case STATE_CHANGED:
3260 printk(KERN_WARNING "cciss%d: a state change "
3261 "detected, command retried\n", h->ctlr);
3262 return 1;
3263 break;
3264 case LUN_FAILED:
3265 printk(KERN_WARNING "cciss%d: LUN failure "
3266 "detected, action required\n", h->ctlr);
3267 return 1;
3268 break;
3269 case REPORT_LUNS_CHANGED:
3270 printk(KERN_WARNING "cciss%d: report LUN data "
3271 "changed\n", h->ctlr);
3272 if (h->rescan_wait)
3273 complete(h->rescan_wait);
3274 return 1;
3275 break;
3276 case POWER_OR_RESET:
3277 printk(KERN_WARNING "cciss%d: a power on "
3278 "or device reset detected\n", h->ctlr);
3279 return 1;
3280 break;
3281 case UNIT_ATTENTION_CLEARED:
3282 printk(KERN_WARNING "cciss%d: unit attention "
3283 "cleared by another initiator\n", h->ctlr);
3284 return 1;
3285 break;
3286 default:
3287 printk(KERN_WARNING "cciss%d: unknown "
3288 "unit attention detected\n", h->ctlr);
3289 return 1;
3290 }
3291}
3292
7c832835 3293/*
d14c4ab5 3294 * We cannot read the structure directly, for portability we must use
1da177e4 3295 * the io functions.
7c832835 3296 * This is for debug only.
1da177e4
LT		 3297 */
3298#ifdef CCISS_DEBUG
7c832835 3299static void print_cfg_table(CfgTable_struct *tb)
1da177e4
LT		 3300{
3301 int i;
3302 char temp_name[17];
3303
3304 printk("Controller Configuration information\n");
3305 printk("------------------------------------\n");
7c832835 3306 for (i = 0; i < 4; i++)
1da177e4 3307 temp_name[i] = readb(&(tb->Signature[i]));
7c832835
BH		 3308 temp_name[4] = '\0';
3309 printk(" Signature = %s\n", temp_name);
1da177e4 3310 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
7c832835
BH		 3311 printk(" Transport methods supported = 0x%x\n",
3312 readl(&(tb->TransportSupport)));
3313 printk(" Transport methods active = 0x%x\n",
3314 readl(&(tb->TransportActive)));
3315 printk(" Requested transport Method = 0x%x\n",
3316 readl(&(tb->HostWrite.TransportRequest)));
d14c4ab5 3317 printk(" Coalesce Interrupt Delay = 0x%x\n",
7c832835 3318 readl(&(tb->HostWrite.CoalIntDelay)));
d14c4ab5 3319 printk(" Coalesce Interrupt Count = 0x%x\n",
7c832835
BH		 3320 readl(&(tb->HostWrite.CoalIntCount)));
3321 printk(" Max outstanding commands = 0x%d\n",
3322 readl(&(tb->CmdsOutMax)));
3323 printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
3324 for (i = 0; i < 16; i++)
1da177e4
LT		 3325 temp_name[i] = readb(&(tb->ServerName[i]));
3326 temp_name[16] = '\0';
3327 printk(" Server Name = %s\n", temp_name);
7c832835 3328 printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat)));
1da177e4 3329}
7c832835 3330#endif /* CCISS_DEBUG */
1da177e4 3331
7c832835 3332static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
1da177e4
LT		 3333{
3334 int i, offset, mem_type, bar_type;
7c832835 3335 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
1da177e4
LT		 3336 return 0;
3337 offset = 0;
7c832835
BH		 3338 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
3339 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
1da177e4
LT		 3340 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
3341 offset += 4;
3342 else {
3343 mem_type = pci_resource_flags(pdev, i) &
7c832835 3344 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
1da177e4 3345 switch (mem_type) {
7c832835
BH		 3346 case PCI_BASE_ADDRESS_MEM_TYPE_32:
3347 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
3348 offset += 4; /* 32 bit */
3349 break;
3350 case PCI_BASE_ADDRESS_MEM_TYPE_64:
3351 offset += 8;
3352 break;
3353 default: /* reserved in PCI 2.2 */
3354 printk(KERN_WARNING
3355 "Base address is invalid\n");
3356 return -1;
1da177e4
LT		 3357 break;
3358 }
3359 }
7c832835
BH		 3360 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
3361 return i + 1;
1da177e4
LT		 3362 }
3363 return -1;
3364}
3365
fb86a35b
MM		 3366/* If MSI/MSI-X is supported by the kernel we will try to enable it on
3367 * controllers that are capable. If not, we use IO-APIC mode.
3368 */
3369
7c832835
BH		 3370static void __devinit cciss_interrupt_mode(ctlr_info_t *c,
3371 struct pci_dev *pdev, __u32 board_id)
fb86a35b
MM		 3372{
3373#ifdef CONFIG_PCI_MSI
7c832835
BH		 3374 int err;
3375 struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1},
3376 {0, 2}, {0, 3}
3377 };
fb86a35b
MM		 3378
3379 /* Some boards advertise MSI but don't really support it */
3380 if ((board_id == 0x40700E11) ||
7c832835
BH		 3381 (board_id == 0x40800E11) ||
3382 (board_id == 0x40820E11) || (board_id == 0x40830E11))
fb86a35b
MM		 3383 goto default_int_mode;
3384
7c832835
BH		 3385 if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) {
3386 err = pci_enable_msix(pdev, cciss_msix_entries, 4);
3387 if (!err) {
3388 c->intr[0] = cciss_msix_entries[0].vector;
3389 c->intr[1] = cciss_msix_entries[1].vector;
3390 c->intr[2] = cciss_msix_entries[2].vector;
3391 c->intr[3] = cciss_msix_entries[3].vector;
3392 c->msix_vector = 1;
3393 return;
3394 }
3395 if (err > 0) {
3396 printk(KERN_WARNING "cciss: only %d MSI-X vectors "
3397 "available\n", err);
1ecb9c0f 3398 goto default_int_mode;
7c832835
BH		 3399 } else {
3400 printk(KERN_WARNING "cciss: MSI-X init failed %d\n",
3401 err);
1ecb9c0f 3402 goto default_int_mode;
7c832835
BH		 3403 }
3404 }
3405 if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) {
3406 if (!pci_enable_msi(pdev)) {
7c832835 3407 c->msi_vector = 1;
7c832835
BH		 3408 } else {
3409 printk(KERN_WARNING "cciss: MSI init failed\n");
7c832835
BH		 3410 }
3411 }
1ecb9c0f 3412default_int_mode:
7c832835 3413#endif /* CONFIG_PCI_MSI */
fb86a35b 3414 /* if we get here we're going to use the default interrupt mode */
7c832835 3415 c->intr[SIMPLE_MODE_INT] = pdev->irq;
fb86a35b
MM		 3416 return;
3417}
3418
7d1fd970 3419static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
1da177e4
LT		 3420{
3421 ushort subsystem_vendor_id, subsystem_device_id, command;
3422 __u32 board_id, scratchpad = 0;
3423 __u64 cfg_offset;
3424 __u32 cfg_base_addr;
3425 __u64 cfg_base_addr_index;
c33ac89b 3426 int i, err;
1da177e4
LT		 3427
3428 /* check to see if controller has been disabled */
3429 /* BEFORE trying to enable it */
7c832835
BH		 3430 (void)pci_read_config_word(pdev, PCI_COMMAND, &command);
3431 if (!(command & 0x02)) {
3432 printk(KERN_WARNING
3433 "cciss: controller appears to be disabled\n");
c33ac89b 3434 return -ENODEV;
1da177e4
LT		 3435 }
3436
c33ac89b 3437 err = pci_enable_device(pdev);
7c832835 3438 if (err) {
1da177e4 3439 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
c33ac89b 3440 return err;
1da177e4 3441 }
1da177e4 3442
4e570309
BH		 3443 err = pci_request_regions(pdev, "cciss");
3444 if (err) {
3445 printk(KERN_ERR "cciss: Cannot obtain PCI resources, "
7c832835 3446 "aborting\n");
872225ca 3447 return err;
4e570309
BH		 3448 }
3449
1da177e4
LT		 3450 subsystem_vendor_id = pdev->subsystem_vendor;
3451 subsystem_device_id = pdev->subsystem_device;
3452 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
7c832835 3453 subsystem_vendor_id);
1da177e4 3454
1da177e4
LT		 3455#ifdef CCISS_DEBUG
3456 printk("command = %x\n", command);
3457 printk("irq = %x\n", pdev->irq);
3458 printk("board_id = %x\n", board_id);
7c832835 3459#endif /* CCISS_DEBUG */
1da177e4 3460
fb86a35b
MM		 3461/* If the kernel supports MSI/MSI-X we will try to enable that functionality,
3462 * else we use the IO-APIC interrupt assigned to us by system ROM.
3463 */
3464 cciss_interrupt_mode(c, pdev, board_id);
1da177e4 3465
e1438581
MM		 3466 /* find the memory BAR */
3467 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
3468 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM)
3469 break;
3470 }
3471 if (i == DEVICE_COUNT_RESOURCE) {
3472 printk(KERN_WARNING "cciss: No memory BAR found\n");
3473 err = -ENODEV;
3474 goto err_out_free_res;
3475 }
3476
3477 c->paddr = pci_resource_start(pdev, i); /* addressing mode bits
3478 * already removed
3479 */
1da177e4 3480
1da177e4 3481#ifdef CCISS_DEBUG
9f92f471 3482 printk("address 0 = %lx\n", c->paddr);
7c832835 3483#endif /* CCISS_DEBUG */
a5b92873 3484 c->vaddr = remap_pci_mem(c->paddr, 0x250);
1da177e4
LT		 3485
3486 /* Wait for the board to become ready. (PCI hotplug needs this.)
3487 * We poll for up to 120 secs, once per 100ms. */
7c832835 3488 for (i = 0; i < 1200; i++) {
1da177e4
LT		 3489 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
3490 if (scratchpad == CCISS_FIRMWARE_READY)
3491 break;
3492 set_current_state(TASK_INTERRUPTIBLE);
4d761609 3493 schedule_timeout(msecs_to_jiffies(100)); /* wait 100ms */
1da177e4
LT		 3494 }
3495 if (scratchpad != CCISS_FIRMWARE_READY) {
3496 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
c33ac89b 3497 err = -ENODEV;
4e570309 3498 goto err_out_free_res;
1da177e4
LT		 3499 }
3500
3501 /* get the address index number */
3502 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
3503 cfg_base_addr &= (__u32) 0x0000ffff;
3504#ifdef CCISS_DEBUG
3505 printk("cfg base address = %x\n", cfg_base_addr);
7c832835
BH		 3506#endif /* CCISS_DEBUG */
3507 cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr);
1da177e4 3508#ifdef CCISS_DEBUG
9f92f471
RD		 3509 printk("cfg base address index = %llx\n",
3510 (unsigned long long)cfg_base_addr_index);
7c832835 3511#endif /* CCISS_DEBUG */
1da177e4
LT		 3512 if (cfg_base_addr_index == -1) {
3513 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
c33ac89b 3514 err = -ENODEV;
4e570309 3515 goto err_out_free_res;
1da177e4
LT		 3516 }
3517
3518 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
3519#ifdef CCISS_DEBUG
9f92f471 3520 printk("cfg offset = %llx\n", (unsigned long long)cfg_offset);
7c832835
BH		 3521#endif /* CCISS_DEBUG */
3522 c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
3523 cfg_base_addr_index) +
3524 cfg_offset, sizeof(CfgTable_struct));
1da177e4
LT		 3525 c->board_id = board_id;
3526
3527#ifdef CCISS_DEBUG
945f390f 3528 print_cfg_table(c->cfgtable);
7c832835 3529#endif /* CCISS_DEBUG */
1da177e4 3530
49153998
MM		 3531 /* Some controllers support Zero Memory Raid (ZMR).
3532 * When configured in ZMR mode the number of supported
3533 * commands drops to 64. So instead of just setting an
3534 * arbitrary value we make the driver a little smarter.
3535 * We read the config table to tell us how many commands
3536 * are supported on the controller then subtract 4 to
3537 * leave a little room for ioctl calls.
3538 */
3539 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
7c832835 3540 for (i = 0; i < ARRAY_SIZE(products); i++) {
1da177e4
LT		 3541 if (board_id == products[i].board_id) {
3542 c->product_name = products[i].product_name;
3543 c->access = *(products[i].access);
49153998 3544 c->nr_cmds = c->max_commands - 4;
1da177e4
LT		 3545 break;
3546 }
3547 }
7c832835
BH		 3548 if ((readb(&c->cfgtable->Signature[0]) != 'C') ||
3549 (readb(&c->cfgtable->Signature[1]) != 'I') ||
3550 (readb(&c->cfgtable->Signature[2]) != 'S') ||
3551 (readb(&c->cfgtable->Signature[3]) != 'S')) {
1da177e4 3552 printk("Does not appear to be a valid CISS config table\n");
c33ac89b 3553 err = -ENODEV;
4e570309 3554 goto err_out_free_res;
1da177e4 3555 }
4ff9a9a4
MM		 3556 /* We didn't find the controller in our list. We know the
3557 * signature is valid. If it's an HP device let's try to
3558 * bind to the device and fire it up. Otherwise we bail.
3559 */
3560 if (i == ARRAY_SIZE(products)) {
3561 if (subsystem_vendor_id == PCI_VENDOR_ID_HP) {
3562 c->product_name = products[i-1].product_name;
3563 c->access = *(products[i-1].access);
49153998 3564 c->nr_cmds = c->max_commands - 4;
4ff9a9a4
MM		 3565 printk(KERN_WARNING "cciss: This is an unknown "
3566 "Smart Array controller.\n"
3567 "cciss: Please update to the latest driver "
3568 "available from www.hp.com.\n");
3569 } else {
3570 printk(KERN_WARNING "cciss: Sorry, I don't know how"
3571 " to access the Smart Array controller %08lx\n"
3572 , (unsigned long)board_id);
3573 err = -ENODEV;
3574 goto err_out_free_res;
3575 }
3576 }
1da177e4 3577#ifdef CONFIG_X86
7c832835
BH		 3578 {
3579 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
3580 __u32 prefetch;
3581 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
3582 prefetch |= 0x100;
3583 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
3584 }
1da177e4
LT		 3585#endif
3586
8bf50f71
MMOD		 3587 /* Disabling DMA prefetch and refetch for the P600.
3588 * An ASIC bug may result in accesses to invalid memory addresses.
3589 * We've disabled prefetch for some time now. Testing with XEN
3590 * kernels revealed a bug in the refetch if dom0 resides on a P600.
f92e2f5f
MM		 3591 */
3592 if(board_id == 0x3225103C) {
3593 __u32 dma_prefetch;
8bf50f71 3594 __u32 dma_refetch;
f92e2f5f
MM		 3595 dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG);
3596 dma_prefetch |= 0x8000;
3597 writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG);
8bf50f71
MMOD		 3598 pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch);
3599 dma_refetch |= 0x1;
3600 pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch);
f92e2f5f
MM		 3601 }
3602
1da177e4
LT		 3603#ifdef CCISS_DEBUG
3604 printk("Trying to put board into Simple mode\n");
7c832835 3605#endif /* CCISS_DEBUG */
1da177e4 3606 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
7c832835
BH		 3607 /* Update the field, and then ring the doorbell */
3608 writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest));
3609 writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
1da177e4
LT		 3610
3611 /* under certain very rare conditions, this can take awhile.
3612 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3613 * as we enter this code.) */
7c832835 3614 for (i = 0; i < MAX_CONFIG_WAIT; i++) {
1da177e4
LT		 3615 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
3616 break;
3617 /* delay and try again */
3618 set_current_state(TASK_INTERRUPTIBLE);
4d761609 3619 schedule_timeout(msecs_to_jiffies(1));
7c832835 3620 }
1da177e4
LT		 3621
3622#ifdef CCISS_DEBUG
7c832835
BH		 3623 printk(KERN_DEBUG "I counter got to %d %x\n", i,
3624 readl(c->vaddr + SA5_DOORBELL));
3625#endif /* CCISS_DEBUG */
1da177e4 3626#ifdef CCISS_DEBUG
7c832835
BH		 3627 print_cfg_table(c->cfgtable);
3628#endif /* CCISS_DEBUG */
1da177e4 3629
7c832835 3630 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
1da177e4 3631 printk(KERN_WARNING "cciss: unable to get board into"
7c832835 3632 " simple mode\n");
c33ac89b 3633 err = -ENODEV;
4e570309 3634 goto err_out_free_res;
1da177e4
LT		 3635 }
3636 return 0;
3637
5faad620 3638err_out_free_res:
872225ca
MM		 3639 /*
3640 * Deliberately omit pci_disable_device(): it does something nasty to
3641 * Smart Array controllers that pci_enable_device does not undo
3642 */
4e570309 3643 pci_release_regions(pdev);
c33ac89b 3644 return err;
1da177e4
LT		 3645}
3646
6ae5ce8e
MM		 3647/* Function to find the first free pointer into our hba[] array
3648 * Returns -1 if no free entries are left.
7c832835 3649 */
1da177e4
LT		 3650static int alloc_cciss_hba(void)
3651{
799202cb 3652 int i;
1da177e4 3653
7c832835 3654 for (i = 0; i < MAX_CTLR; i++) {
1da177e4
LT		 3655 if (!hba[i]) {
3656 ctlr_info_t *p;
f2912a12 3657
06ff37ff 3658 p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL);
1da177e4
LT		 3659 if (!p)
3660 goto Enomem;
1da177e4
LT		 3661 hba[i] = p;
3662 return i;
3663 }
3664 }
3665 printk(KERN_WARNING "cciss: This driver supports a maximum"
7c832835 3666 " of %d controllers.\n", MAX_CTLR);
799202cb
MM		 3667 return -1;
3668Enomem:
1da177e4 3669 printk(KERN_ERR "cciss: out of memory.\n");
1da177e4
LT		 3670 return -1;
3671}
3672
3673static void free_hba(int i)
3674{
3675 ctlr_info_t *p = hba[i];
3676 int n;
3677
3678 hba[i] = NULL;
799202cb 3679 for (n = 0; n < CISS_MAX_LUN; n++)
1da177e4
LT		 3680 put_disk(p->gendisk[n]);
3681 kfree(p);
3682}
3683
82eb03cf
CC		 3684/* Send a message CDB to the firmware. */
3685static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type)
3686{
3687 typedef struct {
3688 CommandListHeader_struct CommandHeader;
3689 RequestBlock_struct Request;
3690 ErrDescriptor_struct ErrorDescriptor;
3691 } Command;
3692 static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct);
3693 Command *cmd;
3694 dma_addr_t paddr64;
3695 uint32_t paddr32, tag;
3696 void __iomem *vaddr;
3697 int i, err;
3698
3699 vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
3700 if (vaddr == NULL)
3701 return -ENOMEM;
3702
3703 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
3704 CCISS commands, so they must be allocated from the lower 4GiB of
3705 memory. */
e930438c 3706 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
82eb03cf
CC		 3707 if (err) {
3708 iounmap(vaddr);
3709 return -ENOMEM;
3710 }
3711
3712 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
3713 if (cmd == NULL) {
3714 iounmap(vaddr);
3715 return -ENOMEM;
3716 }
3717
3718 /* This must fit, because of the 32-bit consistent DMA mask. Also,
3719 although there's no guarantee, we assume that the address is at
3720 least 4-byte aligned (most likely, it's page-aligned). */
3721 paddr32 = paddr64;
3722
3723 cmd->CommandHeader.ReplyQueue = 0;
3724 cmd->CommandHeader.SGList = 0;
3725 cmd->CommandHeader.SGTotal = 0;
3726 cmd->CommandHeader.Tag.lower = paddr32;
3727 cmd->CommandHeader.Tag.upper = 0;
3728 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
3729
3730 cmd->Request.CDBLen = 16;
3731 cmd->Request.Type.Type = TYPE_MSG;
3732 cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE;
3733 cmd->Request.Type.Direction = XFER_NONE;
3734 cmd->Request.Timeout = 0; /* Don't time out */
3735 cmd->Request.CDB[0] = opcode;
3736 cmd->Request.CDB[1] = type;
3737 memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */
3738
3739 cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command);
3740 cmd->ErrorDescriptor.Addr.upper = 0;
3741 cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct);
3742
3743 writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET);
3744
3745 for (i = 0; i < 10; i++) {
3746 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
3747 if ((tag & ~3) == paddr32)
3748 break;
3749 schedule_timeout_uninterruptible(HZ);
3750 }
3751
3752 iounmap(vaddr);
3753
3754 /* we leak the DMA buffer here ... no choice since the controller could
3755 still complete the command. */
3756 if (i == 10) {
3757 printk(KERN_ERR "cciss: controller message %02x:%02x timed out\n",
3758 opcode, type);
3759 return -ETIMEDOUT;
3760 }
3761
3762 pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
3763
3764 if (tag & 2) {
3765 printk(KERN_ERR "cciss: controller message %02x:%02x failed\n",
3766 opcode, type);
3767 return -EIO;
3768 }
3769
3770 printk(KERN_INFO "cciss: controller message %02x:%02x succeeded\n",
3771 opcode, type);
3772 return 0;
3773}
3774
3775#define cciss_soft_reset_controller(p) cciss_message(p, 1, 0)
3776#define cciss_noop(p) cciss_message(p, 3, 0)
3777
3778static __devinit int cciss_reset_msi(struct pci_dev *pdev)
3779{
3780/* the #defines are stolen from drivers/pci/msi.h. */
3781#define msi_control_reg(base) (base + PCI_MSI_FLAGS)
3782#define PCI_MSIX_FLAGS_ENABLE (1 << 15)
3783
3784 int pos;
3785 u16 control = 0;
3786
3787 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
3788 if (pos) {
3789 pci_read_config_word(pdev, msi_control_reg(pos), &control);
3790 if (control & PCI_MSI_FLAGS_ENABLE) {
3791 printk(KERN_INFO "cciss: resetting MSI\n");
3792 pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE);
3793 }
3794 }
3795
3796 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
3797 if (pos) {
3798 pci_read_config_word(pdev, msi_control_reg(pos), &control);
3799 if (control & PCI_MSIX_FLAGS_ENABLE) {
3800 printk(KERN_INFO "cciss: resetting MSI-X\n");
3801 pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE);
3802 }
3803 }
3804
3805 return 0;
3806}
3807
3808/* This does a hard reset of the controller using PCI power management
3809 * states. */
3810static __devinit int cciss_hard_reset_controller(struct pci_dev *pdev)
3811{
3812 u16 pmcsr, saved_config_space[32];
3813 int i, pos;
3814
3815 printk(KERN_INFO "cciss: using PCI PM to reset controller\n");
3816
3817 /* This is very nearly the same thing as
3818
3819 pci_save_state(pci_dev);
3820 pci_set_power_state(pci_dev, PCI_D3hot);
3821 pci_set_power_state(pci_dev, PCI_D0);
3822 pci_restore_state(pci_dev);
3823
3824 but we can't use these nice canned kernel routines on
3825 kexec, because they also check the MSI/MSI-X state in PCI
3826 configuration space and do the wrong thing when it is
3827 set/cleared. Also, the pci_save/restore_state functions
3828 violate the ordering requirements for restoring the
3829 configuration space from the CCISS document (see the
3830 comment below). So we roll our own .... */
3831
3832 for (i = 0; i < 32; i++)
3833 pci_read_config_word(pdev, 2*i, &saved_config_space[i]);
3834
3835 pos = pci_find_capability(pdev, PCI_CAP_ID_PM);
3836 if (pos == 0) {
3837 printk(KERN_ERR "cciss_reset_controller: PCI PM not supported\n");
3838 return -ENODEV;
3839 }
3840
3841 /* Quoting from the Open CISS Specification: "The Power
3842 * Management Control/Status Register (CSR) controls the power
3843 * state of the device. The normal operating state is D0,
3844 * CSR=00h. The software off state is D3, CSR=03h. To reset
3845 * the controller, place the interface device in D3 then to
3846 * D0, this causes a secondary PCI reset which will reset the
3847 * controller." */
3848
3849 /* enter the D3hot power management state */
3850 pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr);
3851 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3852 pmcsr |= PCI_D3hot;
3853 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
3854
3855 schedule_timeout_uninterruptible(HZ >> 1);
3856
3857 /* enter the D0 power management state */
3858 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3859 pmcsr |= PCI_D0;
3860 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
3861
3862 schedule_timeout_uninterruptible(HZ >> 1);
3863
3864 /* Restore the PCI configuration space. The Open CISS
3865 * Specification says, "Restore the PCI Configuration
3866 * Registers, offsets 00h through 60h. It is important to
3867 * restore the command register, 16-bits at offset 04h,
3868 * last. Do not restore the configuration status register,
3869 * 16-bits at offset 06h." Note that the offset is 2*i. */
3870 for (i = 0; i < 32; i++) {
3871 if (i == 2 || i == 3)
3872 continue;
3873 pci_write_config_word(pdev, 2*i, saved_config_space[i]);
3874 }
3875 wmb();
3876 pci_write_config_word(pdev, 4, saved_config_space[2]);
3877
3878 return 0;
3879}
3880
1da177e4
LT		 3881/*
3882 * This is it. Find all the controllers and register them. I really hate
3883 * stealing all these major device numbers.
3884 * returns the number of block devices registered.
3885 */
3886static int __devinit cciss_init_one(struct pci_dev *pdev,
7c832835 3887 const struct pci_device_id *ent)
1da177e4 3888{
1da177e4 3889 int i;
799202cb 3890 int j = 0;
1da177e4 3891 int rc;
22bece00 3892 int dac, return_code;
212a5026 3893 InquiryData_struct *inq_buff;
1da177e4 3894
82eb03cf
CC		 3895 if (reset_devices) {
3896 /* Reset the controller with a PCI power-cycle */
3897 if (cciss_hard_reset_controller(pdev) || cciss_reset_msi(pdev))
3898 return -ENODEV;
3899
5e18cfd0
JA		 3900 /* Now try to get the controller to respond to a no-op. Some
3901 devices (notably the HP Smart Array 5i Controller) need
3902 up to 30 seconds to respond. */
5e4c91c8 3903 for (i=0; i<30; i++) {
82eb03cf
CC		 3904 if (cciss_noop(pdev) == 0)
3905 break;
5e4c91c8
JA		 3906
3907 schedule_timeout_uninterruptible(HZ);
3908 }
3909 if (i == 30) {
3910 printk(KERN_ERR "cciss: controller seems dead\n");
3911 return -EBUSY;
82eb03cf
CC		 3912 }
3913 }
3914
1da177e4 3915 i = alloc_cciss_hba();
7c832835 3916 if (i < 0)
e2019b58 3917 return -1;
1f8ef380
MM		 3918
3919 hba[i]->busy_initializing = 1;
8a3173de
JA		 3920 INIT_HLIST_HEAD(&hba[i]->cmpQ);
3921 INIT_HLIST_HEAD(&hba[i]->reqQ);
1f8ef380 3922
1da177e4 3923 if (cciss_pci_init(hba[i], pdev) != 0)
7fe06326 3924 goto clean0;
1da177e4
LT		 3925
3926 sprintf(hba[i]->devname, "cciss%d", i);
3927 hba[i]->ctlr = i;
3928 hba[i]->pdev = pdev;
3929
7fe06326
AP		 3930 if (cciss_create_hba_sysfs_entry(hba[i]))
3931 goto clean0;
3932
1da177e4 3933 /* configure PCI DMA stuff */
6a35528a 3934 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
40aabb58 3935 dac = 1;
284901a9 3936 else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
40aabb58 3937 dac = 0;
1da177e4 3938 else {
40aabb58 3939 printk(KERN_ERR "cciss: no suitable DMA available\n");
1da177e4
LT		 3940 goto clean1;
3941 }
3942
3943 /*
3944 * register with the major number, or get a dynamic major number
3945 * by passing 0 as argument. This is done for greater than
3946 * 8 controller support.
3947 */
3948 if (i < MAX_CTLR_ORIG)
564de74a 3949 hba[i]->major = COMPAQ_CISS_MAJOR + i;
1da177e4 3950 rc = register_blkdev(hba[i]->major, hba[i]->devname);
7c832835 3951 if (rc == -EBUSY || rc == -EINVAL) {
1da177e4 3952 printk(KERN_ERR
7c832835
BH		 3953 "cciss: Unable to get major number %d for %s "
3954 "on hba %d\n", hba[i]->major, hba[i]->devname, i);
1da177e4 3955 goto clean1;
7c832835 3956 } else {
1da177e4
LT		 3957 if (i >= MAX_CTLR_ORIG)
3958 hba[i]->major = rc;
3959 }
3960
3961 /* make sure the board interrupts are off */
3962 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
7c832835 3963 if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr,
69ab3912 3964 IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) {
1da177e4 3965 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
7c832835 3966 hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname);
1da177e4
LT		 3967 goto clean2;
3968 }
40aabb58
BH		 3969
3970 printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
7c832835
BH		 3971 hba[i]->devname, pdev->device, pci_name(pdev),
3972 hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not");
3973
3974 hba[i]->cmd_pool_bits =
061837bc
JL		 3975 kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG)
3976 * sizeof(unsigned long), GFP_KERNEL);
7c832835
BH		 3977 hba[i]->cmd_pool = (CommandList_struct *)
3978 pci_alloc_consistent(hba[i]->pdev,
f880632f 3979 hba[i]->nr_cmds * sizeof(CommandList_struct),
7c832835
BH		 3980 &(hba[i]->cmd_pool_dhandle));
3981 hba[i]->errinfo_pool = (ErrorInfo_struct *)
3982 pci_alloc_consistent(hba[i]->pdev,
f880632f 3983 hba[i]->nr_cmds * sizeof(ErrorInfo_struct),
7c832835
BH		 3984 &(hba[i]->errinfo_pool_dhandle));
3985 if ((hba[i]->cmd_pool_bits == NULL)
3986 || (hba[i]->cmd_pool == NULL)
3987 || (hba[i]->errinfo_pool == NULL)) {
3988 printk(KERN_ERR "cciss: out of memory");
1da177e4
LT		 3989 goto clean4;
3990 }
1da177e4 3991 spin_lock_init(&hba[i]->lock);
1da177e4 3992
7c832835
BH		 3993 /* Initialize the pdev driver private data.
3994 have it point to hba[i]. */
1da177e4 3995 pci_set_drvdata(pdev, hba[i]);
7c832835
BH		 3996 /* command and error info recs zeroed out before
3997 they are used */
3998 memset(hba[i]->cmd_pool_bits, 0,
061837bc
JL		 3999 DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG)
4000 * sizeof(unsigned long));
1da177e4 4001
6ae5ce8e
MM		 4002 hba[i]->num_luns = 0;
4003 hba[i]->highest_lun = -1;
4004 for (j = 0; j < CISS_MAX_LUN; j++) {
4005 hba[i]->drv[j].raid_level = -1;
4006 hba[i]->drv[j].queue = NULL;
4007 hba[i]->gendisk[j] = NULL;
4008 }
1da177e4
LT		 4009
4010 cciss_scsi_setup(i);
4011
4012 /* Turn the interrupts on so we can service requests */
4013 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
4014
22bece00
MM		 4015 /* Get the firmware version */
4016 inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL);
4017 if (inq_buff == NULL) {
4018 printk(KERN_ERR "cciss: out of memory\n");
4019 goto clean4;
4020 }
4021
4022 return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff,
b57695fe 4023 sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD);
22bece00
MM		 4024 if (return_code == IO_OK) {
4025 hba[i]->firm_ver[0] = inq_buff->data_byte[32];
4026 hba[i]->firm_ver[1] = inq_buff->data_byte[33];
4027 hba[i]->firm_ver[2] = inq_buff->data_byte[34];
4028 hba[i]->firm_ver[3] = inq_buff->data_byte[35];
4029 } else { /* send command failed */
4030 printk(KERN_WARNING "cciss: unable to determine firmware"
4031 " version of controller\n");
4032 }
212a5026 4033 kfree(inq_buff);
22bece00 4034
1da177e4 4035 cciss_procinit(i);
92c4231a
MM		 4036
4037 hba[i]->cciss_max_sectors = 2048;
4038
d6dbf42e 4039 hba[i]->busy_initializing = 0;
1da177e4 4040
6ae5ce8e 4041 rebuild_lun_table(hba[i], 1);
0a9279cc
MM		 4042 hba[i]->cciss_scan_thread = kthread_run(scan_thread, hba[i],
4043 "cciss_scan%02d", i);
4044 if (IS_ERR(hba[i]->cciss_scan_thread))
4045 return PTR_ERR(hba[i]->cciss_scan_thread);
4046
e2019b58 4047 return 1;
1da177e4 4048
6ae5ce8e 4049clean4:
6044ec88 4050 kfree(hba[i]->cmd_pool_bits);
7c832835 4051 if (hba[i]->cmd_pool)
1da177e4 4052 pci_free_consistent(hba[i]->pdev,
f880632f 4053 hba[i]->nr_cmds * sizeof(CommandList_struct),
7c832835
BH		 4054 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
4055 if (hba[i]->errinfo_pool)
1da177e4 4056 pci_free_consistent(hba[i]->pdev,
f880632f 4057 hba[i]->nr_cmds * sizeof(ErrorInfo_struct),
7c832835
BH		 4058 hba[i]->errinfo_pool,
4059 hba[i]->errinfo_pool_dhandle);
fb86a35b 4060 free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]);
6ae5ce8e 4061clean2:
1da177e4 4062 unregister_blkdev(hba[i]->major, hba[i]->devname);
6ae5ce8e 4063clean1:
7fe06326
AP		 4064 cciss_destroy_hba_sysfs_entry(hba[i]);
4065clean0:
1f8ef380 4066 hba[i]->busy_initializing = 0;
799202cb
MM		 4067 /* cleanup any queues that may have been initialized */
4068 for (j=0; j <= hba[i]->highest_lun; j++){
4069 drive_info_struct *drv = &(hba[i]->drv[j]);
4070 if (drv->queue)
4071 blk_cleanup_queue(drv->queue);
4072 }
872225ca
MM		 4073 /*
4074 * Deliberately omit pci_disable_device(): it does something nasty to
4075 * Smart Array controllers that pci_enable_device does not undo
4076 */
799202cb 4077 pci_release_regions(pdev);
799202cb 4078 pci_set_drvdata(pdev, NULL);
61808c2b 4079 free_hba(i);
e2019b58 4080 return -1;
1da177e4
LT		 4081}
4082
e9ca75b5 4083static void cciss_shutdown(struct pci_dev *pdev)
1da177e4
LT		 4084{
4085 ctlr_info_t *tmp_ptr;
e9ca75b5 4086 int i;
1da177e4 4087 char flush_buf[4];
7c832835 4088 int return_code;
1da177e4 4089
e9ca75b5
GB		 4090 tmp_ptr = pci_get_drvdata(pdev);
4091 if (tmp_ptr == NULL)
4092 return;
4093 i = tmp_ptr->ctlr;
4094 if (hba[i] == NULL)
4095 return;
4096
4097 /* Turn board interrupts off and send the flush cache command */
4098 /* sendcmd will turn off interrupt, and send the flush...
4099 * To write all data in the battery backed cache to disks */
4100 memset(flush_buf, 0, 4);
b57695fe 4101 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0,
4102 CTLR_LUNID, TYPE_CMD);
e9ca75b5
GB		 4103 if (return_code == IO_OK) {
4104 printk(KERN_INFO "Completed flushing cache on controller %d\n", i);
4105 } else {
4106 printk(KERN_WARNING "Error flushing cache on controller %d\n", i);
4107 }
4108 free_irq(hba[i]->intr[2], hba[i]);
4109}
4110
4111static void __devexit cciss_remove_one(struct pci_dev *pdev)
4112{
4113 ctlr_info_t *tmp_ptr;
4114 int i, j;
4115
7c832835
BH		 4116 if (pci_get_drvdata(pdev) == NULL) {
4117 printk(KERN_ERR "cciss: Unable to remove device \n");
1da177e4
LT		 4118 return;
4119 }
0a9279cc 4120
1da177e4
LT		 4121 tmp_ptr = pci_get_drvdata(pdev);
4122 i = tmp_ptr->ctlr;
7c832835 4123 if (hba[i] == NULL) {
1da177e4 4124 printk(KERN_ERR "cciss: device appears to "
7c832835 4125 "already be removed \n");
1da177e4
LT		 4126 return;
4127 }
b6550777 4128
0a9279cc
MM		 4129 kthread_stop(hba[i]->cciss_scan_thread);
4130
b6550777
BH		 4131 remove_proc_entry(hba[i]->devname, proc_cciss);
4132 unregister_blkdev(hba[i]->major, hba[i]->devname);
4133
4134 /* remove it from the disk list */
4135 for (j = 0; j < CISS_MAX_LUN; j++) {
4136 struct gendisk *disk = hba[i]->gendisk[j];
4137 if (disk) {
165125e1 4138 struct request_queue *q = disk->queue;
b6550777
BH		 4139
4140 if (disk->flags & GENHD_FL_UP)
4141 del_gendisk(disk);
4142 if (q)
4143 blk_cleanup_queue(q);
4144 }
4145 }
4146
ba198efb 4147#ifdef CONFIG_CISS_SCSI_TAPE
b6550777 4148 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
ba198efb 4149#endif
b6550777 4150
e9ca75b5 4151 cciss_shutdown(pdev);
fb86a35b
MM		 4152
4153#ifdef CONFIG_PCI_MSI
7c832835
BH		 4154 if (hba[i]->msix_vector)
4155 pci_disable_msix(hba[i]->pdev);
4156 else if (hba[i]->msi_vector)
4157 pci_disable_msi(hba[i]->pdev);
4158#endif /* CONFIG_PCI_MSI */
fb86a35b 4159
1da177e4 4160 iounmap(hba[i]->vaddr);
1da177e4 4161
f880632f 4162 pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct),
1da177e4 4163 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
f880632f 4164 pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct),
7c832835 4165 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
1da177e4 4166 kfree(hba[i]->cmd_pool_bits);
872225ca
MM		 4167 /*
4168 * Deliberately omit pci_disable_device(): it does something nasty to
4169 * Smart Array controllers that pci_enable_device does not undo
4170 */
7c832835 4171 pci_release_regions(pdev);
4e570309 4172 pci_set_drvdata(pdev, NULL);
7fe06326 4173 cciss_destroy_hba_sysfs_entry(hba[i]);
1da177e4 4174 free_hba(i);
7c832835 4175}
1da177e4
LT		 4176
4177static struct pci_driver cciss_pci_driver = {
7c832835
BH		 4178 .name = "cciss",
4179 .probe = cciss_init_one,
4180 .remove = __devexit_p(cciss_remove_one),
4181 .id_table = cciss_pci_device_id, /* id_table */
e9ca75b5 4182 .shutdown = cciss_shutdown,
1da177e4
LT		 4183};
4184
4185/*
4186 * This is it. Register the PCI driver information for the cards we control
7c832835 4187 * the OS will call our registered routines when it finds one of our cards.
1da177e4
LT		 4188 */
4189static int __init cciss_init(void)
4190{
7fe06326
AP		 4191 int err;
4192
10cbda97
JA		 4193 /*
4194 * The hardware requires that commands are aligned on a 64-bit
4195 * boundary. Given that we use pci_alloc_consistent() to allocate an
4196 * array of them, the size must be a multiple of 8 bytes.
4197 */
4198 BUILD_BUG_ON(sizeof(CommandList_struct) % 8);
4199
1da177e4
LT		 4200 printk(KERN_INFO DRIVER_NAME "\n");
4201
7fe06326
AP		 4202 err = bus_register(&cciss_bus_type);
4203 if (err)
4204 return err;
4205
1da177e4 4206 /* Register for our PCI devices */
7fe06326
AP		 4207 err = pci_register_driver(&cciss_pci_driver);
4208 if (err)
4209 goto err_bus_register;
4210
4211 return 0;
4212
4213err_bus_register:
4214 bus_unregister(&cciss_bus_type);
4215 return err;
1da177e4
LT		 4216}
4217
4218static void __exit cciss_cleanup(void)
4219{
4220 int i;
4221
4222 pci_unregister_driver(&cciss_pci_driver);
4223 /* double check that all controller entrys have been removed */
7c832835
BH		 4224 for (i = 0; i < MAX_CTLR; i++) {
4225 if (hba[i] != NULL) {
1da177e4 4226 printk(KERN_WARNING "cciss: had to remove"
7c832835 4227 " controller %d\n", i);
1da177e4
LT		 4228 cciss_remove_one(hba[i]->pdev);
4229 }
4230 }
928b4d8c 4231 remove_proc_entry("driver/cciss", NULL);
7fe06326 4232 bus_unregister(&cciss_bus_type);
1da177e4
LT		 4233}
4234
33079b21
MM		 4235static void fail_all_cmds(unsigned long ctlr)
4236{
4237 /* If we get here, the board is apparently dead. */
4238 ctlr_info_t *h = hba[ctlr];
4239 CommandList_struct *c;
4240 unsigned long flags;
4241
4242 printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr);
7c832835 4243 h->alive = 0; /* the controller apparently died... */
33079b21
MM		 4244
4245 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
4246
7c832835 4247 pci_disable_device(h->pdev); /* Make sure it is really dead. */
33079b21
MM		 4248
4249 /* move everything off the request queue onto the completed queue */
8a3173de
JA		 4250 while (!hlist_empty(&h->reqQ)) {
4251 c = hlist_entry(h->reqQ.first, CommandList_struct, list);
4252 removeQ(c);
33079b21 4253 h->Qdepth--;
8a3173de 4254 addQ(&h->cmpQ, c);
33079b21
MM		 4255 }
4256
4257 /* Now, fail everything on the completed queue with a HW error */
8a3173de
JA		 4258 while (!hlist_empty(&h->cmpQ)) {
4259 c = hlist_entry(h->cmpQ.first, CommandList_struct, list);
4260 removeQ(c);
b59e64d0
HR		 4261 if (c->cmd_type != CMD_MSG_STALE)
4262 c->err_info->CommandStatus = CMD_HARDWARE_ERR;
33079b21
MM		 4263 if (c->cmd_type == CMD_RWREQ) {
4264 complete_command(h, c, 0);
4265 } else if (c->cmd_type == CMD_IOCTL_PEND)
4266 complete(c->waiting);
4267#ifdef CONFIG_CISS_SCSI_TAPE
7c832835
BH		 4268 else if (c->cmd_type == CMD_SCSI)
4269 complete_scsi_command(c, 0, 0);
33079b21
MM		 4270#endif
4271 }
4272 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
4273 return;
4274}
4275
1da177e4
LT		 4276module_init(cciss_init);
4277module_exit(cciss_cleanup);
Linux kernel - Deliverables
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