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Commit | Line | Data |
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1da177e4 | 1 | /* |
bd4f36d6 MM |
2 | * Disk Array driver for HP Smart Array controllers. |
3 | * (C) Copyright 2000, 2007 Hewlett-Packard Development Company, L.P. | |
1da177e4 LT |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
bd4f36d6 | 7 | * the Free Software Foundation; version 2 of the License. |
1da177e4 LT |
8 | * |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
bd4f36d6 MM |
11 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * General Public License for more details. | |
1da177e4 LT |
13 | * |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
bd4f36d6 MM |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
17 | * 02111-1307, USA. | |
1da177e4 LT |
18 | * |
19 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com | |
20 | * | |
21 | */ | |
22 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/types.h> | |
26 | #include <linux/pci.h> | |
19373358 | 27 | #include <linux/pci-aspm.h> |
1da177e4 LT |
28 | #include <linux/kernel.h> |
29 | #include <linux/slab.h> | |
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> | |
b368c9dd | 43 | #include <linux/mutex.h> |
1f118bc4 | 44 | #include <linux/bitmap.h> |
d48c152a | 45 | #include <linux/io.h> |
1da177e4 | 46 | #include <asm/uaccess.h> |
1da177e4 | 47 | |
eb0df996 | 48 | #include <linux/dma-mapping.h> |
1da177e4 LT |
49 | #include <linux/blkdev.h> |
50 | #include <linux/genhd.h> | |
51 | #include <linux/completion.h> | |
d5d3b736 | 52 | #include <scsi/scsi.h> |
03bbfee5 MMOD |
53 | #include <scsi/sg.h> |
54 | #include <scsi/scsi_ioctl.h> | |
55 | #include <linux/cdrom.h> | |
231bc2a2 | 56 | #include <linux/scatterlist.h> |
0a9279cc | 57 | #include <linux/kthread.h> |
1da177e4 LT |
58 | |
59 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) | |
841fdffd MM |
60 | #define DRIVER_NAME "HP CISS Driver (v 3.6.26)" |
61 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 26) | |
1da177e4 LT |
62 | |
63 | /* Embedded module documentation macros - see modules.h */ | |
64 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
24aac480 | 65 | MODULE_DESCRIPTION("Driver for HP Smart Array Controllers"); |
841fdffd MM |
66 | MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); |
67 | MODULE_VERSION("3.6.26"); | |
1da177e4 | 68 | MODULE_LICENSE("GPL"); |
8a4ec67b SC |
69 | static int cciss_tape_cmds = 6; |
70 | module_param(cciss_tape_cmds, int, 0644); | |
71 | MODULE_PARM_DESC(cciss_tape_cmds, | |
72 | "number of commands to allocate for tape devices (default: 6)"); | |
13049537 JH |
73 | static int cciss_simple_mode; |
74 | module_param(cciss_simple_mode, int, S_IRUGO|S_IWUSR); | |
75 | MODULE_PARM_DESC(cciss_simple_mode, | |
76 | "Use 'simple mode' rather than 'performant mode'"); | |
1da177e4 | 77 | |
2a48fc0a | 78 | static DEFINE_MUTEX(cciss_mutex); |
bbe425cd | 79 | static struct proc_dir_entry *proc_cciss; |
2ec24ff1 | 80 | |
1da177e4 LT |
81 | #include "cciss_cmd.h" |
82 | #include "cciss.h" | |
83 | #include <linux/cciss_ioctl.h> | |
84 | ||
85 | /* define the PCI info for the cards we can control */ | |
86 | static const struct pci_device_id cciss_pci_device_id[] = { | |
f82ccdb9 BH |
87 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
88 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, | |
89 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, | |
90 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, | |
91 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, | |
92 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, | |
93 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, | |
94 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, | |
95 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, | |
96 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, | |
97 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, | |
98 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, | |
99 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, | |
100 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, | |
101 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, | |
102 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, | |
103 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, | |
104 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, | |
de923916 | 105 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, |
9cff3b38 | 106 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
1da177e4 LT |
107 | {0,} |
108 | }; | |
7c832835 | 109 | |
1da177e4 LT |
110 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
111 | ||
1da177e4 LT |
112 | /* board_id = Subsystem Device ID & Vendor ID |
113 | * product = Marketing Name for the board | |
7c832835 | 114 | * access = Address of the struct of function pointers |
1da177e4 LT |
115 | */ |
116 | static struct board_type products[] = { | |
49153998 MM |
117 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
118 | {0x40800E11, "Smart Array 5i", &SA5B_access}, | |
119 | {0x40820E11, "Smart Array 532", &SA5B_access}, | |
120 | {0x40830E11, "Smart Array 5312", &SA5B_access}, | |
121 | {0x409A0E11, "Smart Array 641", &SA5_access}, | |
122 | {0x409B0E11, "Smart Array 642", &SA5_access}, | |
123 | {0x409C0E11, "Smart Array 6400", &SA5_access}, | |
124 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, | |
125 | {0x40910E11, "Smart Array 6i", &SA5_access}, | |
126 | {0x3225103C, "Smart Array P600", &SA5_access}, | |
4205df34 SC |
127 | {0x3223103C, "Smart Array P800", &SA5_access}, |
128 | {0x3234103C, "Smart Array P400", &SA5_access}, | |
49153998 MM |
129 | {0x3235103C, "Smart Array P400i", &SA5_access}, |
130 | {0x3211103C, "Smart Array E200i", &SA5_access}, | |
131 | {0x3212103C, "Smart Array E200", &SA5_access}, | |
132 | {0x3213103C, "Smart Array E200i", &SA5_access}, | |
133 | {0x3214103C, "Smart Array E200i", &SA5_access}, | |
134 | {0x3215103C, "Smart Array E200i", &SA5_access}, | |
135 | {0x3237103C, "Smart Array E500", &SA5_access}, | |
2ec24ff1 SC |
136 | {0x3223103C, "Smart Array P800", &SA5_access}, |
137 | {0x3234103C, "Smart Array P400", &SA5_access}, | |
49153998 | 138 | {0x323D103C, "Smart Array P700m", &SA5_access}, |
1da177e4 LT |
139 | }; |
140 | ||
d14c4ab5 | 141 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
7c832835 | 142 | #define MAX_CONFIG_WAIT 30000 |
1da177e4 LT |
143 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
144 | ||
145 | /*define how many times we will try a command because of bus resets */ | |
146 | #define MAX_CMD_RETRIES 3 | |
147 | ||
1da177e4 LT |
148 | #define MAX_CTLR 32 |
149 | ||
150 | /* Originally cciss driver only supports 8 major numbers */ | |
151 | #define MAX_CTLR_ORIG 8 | |
152 | ||
1da177e4 LT |
153 | static ctlr_info_t *hba[MAX_CTLR]; |
154 | ||
b368c9dd AP |
155 | static struct task_struct *cciss_scan_thread; |
156 | static DEFINE_MUTEX(scan_mutex); | |
157 | static LIST_HEAD(scan_q); | |
158 | ||
165125e1 | 159 | static void do_cciss_request(struct request_queue *q); |
0c2b3908 MM |
160 | static irqreturn_t do_cciss_intx(int irq, void *dev_id); |
161 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id); | |
ef7822c2 | 162 | static int cciss_open(struct block_device *bdev, fmode_t mode); |
6e9624b8 | 163 | static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode); |
ef7822c2 | 164 | static int cciss_release(struct gendisk *disk, fmode_t mode); |
8a6cfeb6 AB |
165 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
166 | unsigned int cmd, unsigned long arg); | |
ef7822c2 | 167 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
7c832835 | 168 | unsigned int cmd, unsigned long arg); |
a885c8c4 | 169 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 | 170 | |
1da177e4 | 171 | static int cciss_revalidate(struct gendisk *disk); |
2d11d993 | 172 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, int via_ioctl); |
a0ea8622 | 173 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
2d11d993 | 174 | int clear_all, int via_ioctl); |
1da177e4 | 175 | |
f70dba83 | 176 | static void cciss_read_capacity(ctlr_info_t *h, int logvol, |
00988a35 | 177 | sector_t *total_size, unsigned int *block_size); |
f70dba83 | 178 | static void cciss_read_capacity_16(ctlr_info_t *h, int logvol, |
00988a35 | 179 | sector_t *total_size, unsigned int *block_size); |
f70dba83 | 180 | static void cciss_geometry_inquiry(ctlr_info_t *h, int logvol, |
7b838bde | 181 | sector_t total_size, |
00988a35 | 182 | unsigned int block_size, InquiryData_struct *inq_buff, |
7c832835 | 183 | drive_info_struct *drv); |
dac5488a | 184 | static void __devinit cciss_interrupt_mode(ctlr_info_t *); |
13049537 | 185 | static int __devinit cciss_enter_simple_mode(struct ctlr_info *h); |
7c832835 | 186 | static void start_io(ctlr_info_t *h); |
f70dba83 | 187 | static int sendcmd_withirq(ctlr_info_t *h, __u8 cmd, void *buff, size_t size, |
b57695fe | 188 | __u8 page_code, unsigned char scsi3addr[], |
189 | int cmd_type); | |
85cc61ae | 190 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
191 | int attempt_retry); | |
192 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c); | |
1da177e4 | 193 | |
d6f4965d | 194 | static int add_to_scan_list(struct ctlr_info *h); |
0a9279cc MM |
195 | static int scan_thread(void *data); |
196 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c); | |
617e1344 SC |
197 | static void cciss_hba_release(struct device *dev); |
198 | static void cciss_device_release(struct device *dev); | |
361e9b07 | 199 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index); |
9cef0d2f | 200 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index); |
29979a71 | 201 | static inline u32 next_command(ctlr_info_t *h); |
a6528d01 SC |
202 | static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev, |
203 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, | |
204 | u64 *cfg_offset); | |
205 | static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev, | |
206 | unsigned long *memory_bar); | |
16011131 | 207 | static inline u32 cciss_tag_discard_error_bits(ctlr_info_t *h, u32 tag); |
62710ae1 SC |
208 | static __devinit int write_driver_ver_to_cfgtable( |
209 | CfgTable_struct __iomem *cfgtable); | |
33079b21 | 210 | |
5e216153 MM |
211 | /* performant mode helper functions */ |
212 | static void calc_bucket_map(int *bucket, int num_buckets, int nsgs, | |
213 | int *bucket_map); | |
214 | static void cciss_put_controller_into_performant_mode(ctlr_info_t *h); | |
33079b21 | 215 | |
1da177e4 | 216 | #ifdef CONFIG_PROC_FS |
f70dba83 | 217 | static void cciss_procinit(ctlr_info_t *h); |
1da177e4 | 218 | #else |
f70dba83 | 219 | static void cciss_procinit(ctlr_info_t *h) |
7c832835 BH |
220 | { |
221 | } | |
222 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
223 | |
224 | #ifdef CONFIG_COMPAT | |
ef7822c2 AV |
225 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
226 | unsigned, unsigned long); | |
1da177e4 LT |
227 | #endif |
228 | ||
83d5cde4 | 229 | static const struct block_device_operations cciss_fops = { |
7c832835 | 230 | .owner = THIS_MODULE, |
6e9624b8 | 231 | .open = cciss_unlocked_open, |
ef7822c2 | 232 | .release = cciss_release, |
8a6cfeb6 | 233 | .ioctl = do_ioctl, |
7c832835 | 234 | .getgeo = cciss_getgeo, |
1da177e4 | 235 | #ifdef CONFIG_COMPAT |
ef7822c2 | 236 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 237 | #endif |
7c832835 | 238 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
239 | }; |
240 | ||
5e216153 MM |
241 | /* set_performant_mode: Modify the tag for cciss performant |
242 | * set bit 0 for pull model, bits 3-1 for block fetch | |
243 | * register number | |
244 | */ | |
245 | static void set_performant_mode(ctlr_info_t *h, CommandList_struct *c) | |
246 | { | |
0498cc2a | 247 | if (likely(h->transMethod & CFGTBL_Trans_Performant)) |
5e216153 MM |
248 | c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); |
249 | } | |
250 | ||
1da177e4 LT |
251 | /* |
252 | * Enqueuing and dequeuing functions for cmdlists. | |
253 | */ | |
e6e1ee93 | 254 | static inline void addQ(struct list_head *list, CommandList_struct *c) |
1da177e4 | 255 | { |
e6e1ee93 | 256 | list_add_tail(&c->list, list); |
1da177e4 LT |
257 | } |
258 | ||
8a3173de | 259 | static inline void removeQ(CommandList_struct *c) |
1da177e4 | 260 | { |
b59e64d0 HR |
261 | /* |
262 | * After kexec/dump some commands might still | |
263 | * be in flight, which the firmware will try | |
264 | * to complete. Resetting the firmware doesn't work | |
265 | * with old fw revisions, so we have to mark | |
266 | * them off as 'stale' to prevent the driver from | |
267 | * falling over. | |
268 | */ | |
e6e1ee93 | 269 | if (WARN_ON(list_empty(&c->list))) { |
b59e64d0 | 270 | c->cmd_type = CMD_MSG_STALE; |
8a3173de | 271 | return; |
b59e64d0 | 272 | } |
8a3173de | 273 | |
e6e1ee93 | 274 | list_del_init(&c->list); |
1da177e4 LT |
275 | } |
276 | ||
664a717d MM |
277 | static void enqueue_cmd_and_start_io(ctlr_info_t *h, |
278 | CommandList_struct *c) | |
279 | { | |
280 | unsigned long flags; | |
5e216153 | 281 | set_performant_mode(h, c); |
664a717d MM |
282 | spin_lock_irqsave(&h->lock, flags); |
283 | addQ(&h->reqQ, c); | |
284 | h->Qdepth++; | |
2a643ec6 SC |
285 | if (h->Qdepth > h->maxQsinceinit) |
286 | h->maxQsinceinit = h->Qdepth; | |
664a717d MM |
287 | start_io(h); |
288 | spin_unlock_irqrestore(&h->lock, flags); | |
289 | } | |
290 | ||
dccc9b56 | 291 | static void cciss_free_sg_chain_blocks(SGDescriptor_struct **cmd_sg_list, |
49fc5601 SC |
292 | int nr_cmds) |
293 | { | |
294 | int i; | |
295 | ||
296 | if (!cmd_sg_list) | |
297 | return; | |
298 | for (i = 0; i < nr_cmds; i++) { | |
dccc9b56 SC |
299 | kfree(cmd_sg_list[i]); |
300 | cmd_sg_list[i] = NULL; | |
49fc5601 SC |
301 | } |
302 | kfree(cmd_sg_list); | |
303 | } | |
304 | ||
dccc9b56 SC |
305 | static SGDescriptor_struct **cciss_allocate_sg_chain_blocks( |
306 | ctlr_info_t *h, int chainsize, int nr_cmds) | |
49fc5601 SC |
307 | { |
308 | int j; | |
dccc9b56 | 309 | SGDescriptor_struct **cmd_sg_list; |
49fc5601 SC |
310 | |
311 | if (chainsize <= 0) | |
312 | return NULL; | |
313 | ||
314 | cmd_sg_list = kmalloc(sizeof(*cmd_sg_list) * nr_cmds, GFP_KERNEL); | |
315 | if (!cmd_sg_list) | |
316 | return NULL; | |
317 | ||
318 | /* Build up chain blocks for each command */ | |
319 | for (j = 0; j < nr_cmds; j++) { | |
49fc5601 | 320 | /* Need a block of chainsized s/g elements. */ |
dccc9b56 SC |
321 | cmd_sg_list[j] = kmalloc((chainsize * |
322 | sizeof(*cmd_sg_list[j])), GFP_KERNEL); | |
323 | if (!cmd_sg_list[j]) { | |
49fc5601 SC |
324 | dev_err(&h->pdev->dev, "Cannot get memory " |
325 | "for s/g chains.\n"); | |
326 | goto clean; | |
327 | } | |
328 | } | |
329 | return cmd_sg_list; | |
330 | clean: | |
331 | cciss_free_sg_chain_blocks(cmd_sg_list, nr_cmds); | |
332 | return NULL; | |
333 | } | |
334 | ||
d45033ef SC |
335 | static void cciss_unmap_sg_chain_block(ctlr_info_t *h, CommandList_struct *c) |
336 | { | |
337 | SGDescriptor_struct *chain_sg; | |
338 | u64bit temp64; | |
339 | ||
340 | if (c->Header.SGTotal <= h->max_cmd_sgentries) | |
341 | return; | |
342 | ||
343 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; | |
344 | temp64.val32.lower = chain_sg->Addr.lower; | |
345 | temp64.val32.upper = chain_sg->Addr.upper; | |
346 | pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); | |
347 | } | |
348 | ||
349 | static void cciss_map_sg_chain_block(ctlr_info_t *h, CommandList_struct *c, | |
350 | SGDescriptor_struct *chain_block, int len) | |
351 | { | |
352 | SGDescriptor_struct *chain_sg; | |
353 | u64bit temp64; | |
354 | ||
355 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; | |
356 | chain_sg->Ext = CCISS_SG_CHAIN; | |
357 | chain_sg->Len = len; | |
358 | temp64.val = pci_map_single(h->pdev, chain_block, len, | |
359 | PCI_DMA_TODEVICE); | |
360 | chain_sg->Addr.lower = temp64.val32.lower; | |
361 | chain_sg->Addr.upper = temp64.val32.upper; | |
362 | } | |
363 | ||
1da177e4 LT |
364 | #include "cciss_scsi.c" /* For SCSI tape support */ |
365 | ||
1e6f2dc1 AB |
366 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
367 | "UNKNOWN" | |
368 | }; | |
0e4a9d03 | 369 | #define RAID_UNKNOWN (ARRAY_SIZE(raid_label)-1) |
0f5486ec | 370 | |
1da177e4 LT |
371 | #ifdef CONFIG_PROC_FS |
372 | ||
373 | /* | |
374 | * Report information about this controller. | |
375 | */ | |
376 | #define ENG_GIG 1000000000 | |
377 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
89b6e743 | 378 | #define ENGAGE_SCSI "engage scsi" |
1da177e4 | 379 | |
89b6e743 | 380 | static void cciss_seq_show_header(struct seq_file *seq) |
1da177e4 | 381 | { |
89b6e743 MM |
382 | ctlr_info_t *h = seq->private; |
383 | ||
384 | seq_printf(seq, "%s: HP %s Controller\n" | |
385 | "Board ID: 0x%08lx\n" | |
386 | "Firmware Version: %c%c%c%c\n" | |
387 | "IRQ: %d\n" | |
388 | "Logical drives: %d\n" | |
389 | "Current Q depth: %d\n" | |
390 | "Current # commands on controller: %d\n" | |
391 | "Max Q depth since init: %d\n" | |
392 | "Max # commands on controller since init: %d\n" | |
393 | "Max SG entries since init: %d\n", | |
394 | h->devname, | |
395 | h->product_name, | |
396 | (unsigned long)h->board_id, | |
397 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
13049537 | 398 | h->firm_ver[3], (unsigned int)h->intr[h->intr_mode], |
89b6e743 MM |
399 | h->num_luns, |
400 | h->Qdepth, h->commands_outstanding, | |
401 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
402 | ||
403 | #ifdef CONFIG_CISS_SCSI_TAPE | |
f70dba83 | 404 | cciss_seq_tape_report(seq, h); |
89b6e743 MM |
405 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
406 | } | |
1da177e4 | 407 | |
89b6e743 MM |
408 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
409 | { | |
410 | ctlr_info_t *h = seq->private; | |
89b6e743 | 411 | unsigned long flags; |
1da177e4 LT |
412 | |
413 | /* prevent displaying bogus info during configuration | |
414 | * or deconfiguration of a logical volume | |
415 | */ | |
f70dba83 | 416 | spin_lock_irqsave(&h->lock, flags); |
1da177e4 | 417 | if (h->busy_configuring) { |
f70dba83 | 418 | spin_unlock_irqrestore(&h->lock, flags); |
89b6e743 | 419 | return ERR_PTR(-EBUSY); |
1da177e4 LT |
420 | } |
421 | h->busy_configuring = 1; | |
f70dba83 | 422 | spin_unlock_irqrestore(&h->lock, flags); |
1da177e4 | 423 | |
89b6e743 MM |
424 | if (*pos == 0) |
425 | cciss_seq_show_header(seq); | |
426 | ||
427 | return pos; | |
428 | } | |
429 | ||
430 | static int cciss_seq_show(struct seq_file *seq, void *v) | |
431 | { | |
432 | sector_t vol_sz, vol_sz_frac; | |
433 | ctlr_info_t *h = seq->private; | |
434 | unsigned ctlr = h->ctlr; | |
435 | loff_t *pos = v; | |
9cef0d2f | 436 | drive_info_struct *drv = h->drv[*pos]; |
89b6e743 MM |
437 | |
438 | if (*pos > h->highest_lun) | |
439 | return 0; | |
440 | ||
531c2dc7 SC |
441 | if (drv == NULL) /* it's possible for h->drv[] to have holes. */ |
442 | return 0; | |
443 | ||
89b6e743 MM |
444 | if (drv->heads == 0) |
445 | return 0; | |
446 | ||
447 | vol_sz = drv->nr_blocks; | |
448 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
449 | vol_sz_frac *= 100; | |
450 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
451 | ||
fa52bec9 | 452 | if (drv->raid_level < 0 || drv->raid_level > RAID_UNKNOWN) |
89b6e743 MM |
453 | drv->raid_level = RAID_UNKNOWN; |
454 | seq_printf(seq, "cciss/c%dd%d:" | |
455 | "\t%4u.%02uGB\tRAID %s\n", | |
456 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, | |
457 | raid_label[drv->raid_level]); | |
458 | return 0; | |
459 | } | |
460 | ||
461 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
462 | { | |
463 | ctlr_info_t *h = seq->private; | |
464 | ||
465 | if (*pos > h->highest_lun) | |
466 | return NULL; | |
467 | *pos += 1; | |
468 | ||
469 | return pos; | |
470 | } | |
471 | ||
472 | static void cciss_seq_stop(struct seq_file *seq, void *v) | |
473 | { | |
474 | ctlr_info_t *h = seq->private; | |
475 | ||
476 | /* Only reset h->busy_configuring if we succeeded in setting | |
477 | * it during cciss_seq_start. */ | |
478 | if (v == ERR_PTR(-EBUSY)) | |
479 | return; | |
7c832835 | 480 | |
1da177e4 | 481 | h->busy_configuring = 0; |
1da177e4 LT |
482 | } |
483 | ||
88e9d34c | 484 | static const struct seq_operations cciss_seq_ops = { |
89b6e743 MM |
485 | .start = cciss_seq_start, |
486 | .show = cciss_seq_show, | |
487 | .next = cciss_seq_next, | |
488 | .stop = cciss_seq_stop, | |
489 | }; | |
490 | ||
491 | static int cciss_seq_open(struct inode *inode, struct file *file) | |
492 | { | |
493 | int ret = seq_open(file, &cciss_seq_ops); | |
494 | struct seq_file *seq = file->private_data; | |
495 | ||
496 | if (!ret) | |
497 | seq->private = PDE(inode)->data; | |
498 | ||
499 | return ret; | |
500 | } | |
501 | ||
502 | static ssize_t | |
503 | cciss_proc_write(struct file *file, const char __user *buf, | |
504 | size_t length, loff_t *ppos) | |
1da177e4 | 505 | { |
89b6e743 MM |
506 | int err; |
507 | char *buffer; | |
508 | ||
509 | #ifndef CONFIG_CISS_SCSI_TAPE | |
510 | return -EINVAL; | |
1da177e4 LT |
511 | #endif |
512 | ||
89b6e743 | 513 | if (!buf || length > PAGE_SIZE - 1) |
7c832835 | 514 | return -EINVAL; |
89b6e743 MM |
515 | |
516 | buffer = (char *)__get_free_page(GFP_KERNEL); | |
517 | if (!buffer) | |
518 | return -ENOMEM; | |
519 | ||
520 | err = -EFAULT; | |
521 | if (copy_from_user(buffer, buf, length)) | |
522 | goto out; | |
523 | buffer[length] = '\0'; | |
524 | ||
525 | #ifdef CONFIG_CISS_SCSI_TAPE | |
526 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { | |
527 | struct seq_file *seq = file->private_data; | |
528 | ctlr_info_t *h = seq->private; | |
89b6e743 | 529 | |
f70dba83 | 530 | err = cciss_engage_scsi(h); |
8721c81f | 531 | if (err == 0) |
89b6e743 MM |
532 | err = length; |
533 | } else | |
534 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
535 | err = -EINVAL; | |
7c832835 BH |
536 | /* might be nice to have "disengage" too, but it's not |
537 | safely possible. (only 1 module use count, lock issues.) */ | |
89b6e743 MM |
538 | |
539 | out: | |
540 | free_page((unsigned long)buffer); | |
541 | return err; | |
1da177e4 LT |
542 | } |
543 | ||
828c0950 | 544 | static const struct file_operations cciss_proc_fops = { |
89b6e743 MM |
545 | .owner = THIS_MODULE, |
546 | .open = cciss_seq_open, | |
547 | .read = seq_read, | |
548 | .llseek = seq_lseek, | |
549 | .release = seq_release, | |
550 | .write = cciss_proc_write, | |
551 | }; | |
552 | ||
f70dba83 | 553 | static void __devinit cciss_procinit(ctlr_info_t *h) |
1da177e4 LT |
554 | { |
555 | struct proc_dir_entry *pde; | |
556 | ||
89b6e743 | 557 | if (proc_cciss == NULL) |
928b4d8c | 558 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
89b6e743 MM |
559 | if (!proc_cciss) |
560 | return; | |
f70dba83 | 561 | pde = proc_create_data(h->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
89b6e743 | 562 | S_IROTH, proc_cciss, |
f70dba83 | 563 | &cciss_proc_fops, h); |
1da177e4 | 564 | } |
7c832835 | 565 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 566 | |
7fe06326 AP |
567 | #define MAX_PRODUCT_NAME_LEN 19 |
568 | ||
569 | #define to_hba(n) container_of(n, struct ctlr_info, dev) | |
570 | #define to_drv(n) container_of(n, drive_info_struct, dev) | |
571 | ||
ec52d5f1 | 572 | /* List of controllers which cannot be hard reset on kexec with reset_devices */ |
957c2ec5 SC |
573 | static u32 unresettable_controller[] = { |
574 | 0x324a103C, /* Smart Array P712m */ | |
575 | 0x324b103C, /* SmartArray P711m */ | |
576 | 0x3223103C, /* Smart Array P800 */ | |
577 | 0x3234103C, /* Smart Array P400 */ | |
578 | 0x3235103C, /* Smart Array P400i */ | |
579 | 0x3211103C, /* Smart Array E200i */ | |
580 | 0x3212103C, /* Smart Array E200 */ | |
581 | 0x3213103C, /* Smart Array E200i */ | |
582 | 0x3214103C, /* Smart Array E200i */ | |
583 | 0x3215103C, /* Smart Array E200i */ | |
584 | 0x3237103C, /* Smart Array E500 */ | |
585 | 0x323D103C, /* Smart Array P700m */ | |
586 | 0x409C0E11, /* Smart Array 6400 */ | |
587 | 0x409D0E11, /* Smart Array 6400 EM */ | |
588 | }; | |
589 | ||
ec52d5f1 SC |
590 | /* List of controllers which cannot even be soft reset */ |
591 | static u32 soft_unresettable_controller[] = { | |
592 | 0x409C0E11, /* Smart Array 6400 */ | |
593 | 0x409D0E11, /* Smart Array 6400 EM */ | |
594 | }; | |
595 | ||
596 | static int ctlr_is_hard_resettable(u32 board_id) | |
957c2ec5 SC |
597 | { |
598 | int i; | |
599 | ||
600 | for (i = 0; i < ARRAY_SIZE(unresettable_controller); i++) | |
ec52d5f1 | 601 | if (unresettable_controller[i] == board_id) |
957c2ec5 SC |
602 | return 0; |
603 | return 1; | |
604 | } | |
605 | ||
ec52d5f1 SC |
606 | static int ctlr_is_soft_resettable(u32 board_id) |
607 | { | |
608 | int i; | |
609 | ||
610 | for (i = 0; i < ARRAY_SIZE(soft_unresettable_controller); i++) | |
611 | if (soft_unresettable_controller[i] == board_id) | |
612 | return 0; | |
613 | return 1; | |
614 | } | |
615 | ||
616 | static int ctlr_is_resettable(u32 board_id) | |
617 | { | |
618 | return ctlr_is_hard_resettable(board_id) || | |
619 | ctlr_is_soft_resettable(board_id); | |
620 | } | |
621 | ||
957c2ec5 SC |
622 | static ssize_t host_show_resettable(struct device *dev, |
623 | struct device_attribute *attr, | |
624 | char *buf) | |
625 | { | |
626 | struct ctlr_info *h = to_hba(dev); | |
627 | ||
ec52d5f1 | 628 | return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id)); |
957c2ec5 SC |
629 | } |
630 | static DEVICE_ATTR(resettable, S_IRUGO, host_show_resettable, NULL); | |
631 | ||
d6f4965d AP |
632 | static ssize_t host_store_rescan(struct device *dev, |
633 | struct device_attribute *attr, | |
634 | const char *buf, size_t count) | |
635 | { | |
636 | struct ctlr_info *h = to_hba(dev); | |
637 | ||
638 | add_to_scan_list(h); | |
639 | wake_up_process(cciss_scan_thread); | |
640 | wait_for_completion_interruptible(&h->scan_wait); | |
641 | ||
642 | return count; | |
643 | } | |
8ba95c69 | 644 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); |
7fe06326 | 645 | |
f963d270 JH |
646 | static ssize_t host_show_transport_mode(struct device *dev, |
647 | struct device_attribute *attr, | |
648 | char *buf) | |
649 | { | |
650 | struct ctlr_info *h = to_hba(dev); | |
651 | ||
652 | return snprintf(buf, 20, "%s\n", | |
653 | h->transMethod & CFGTBL_Trans_Performant ? | |
654 | "performant" : "simple"); | |
655 | } | |
656 | static DEVICE_ATTR(transport_mode, S_IRUGO, host_show_transport_mode, NULL); | |
657 | ||
7fe06326 AP |
658 | static ssize_t dev_show_unique_id(struct device *dev, |
659 | struct device_attribute *attr, | |
660 | char *buf) | |
661 | { | |
662 | drive_info_struct *drv = to_drv(dev); | |
663 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
664 | __u8 sn[16]; | |
665 | unsigned long flags; | |
666 | int ret = 0; | |
667 | ||
f70dba83 | 668 | spin_lock_irqsave(&h->lock, flags); |
7fe06326 AP |
669 | if (h->busy_configuring) |
670 | ret = -EBUSY; | |
671 | else | |
672 | memcpy(sn, drv->serial_no, sizeof(sn)); | |
f70dba83 | 673 | spin_unlock_irqrestore(&h->lock, flags); |
7fe06326 AP |
674 | |
675 | if (ret) | |
676 | return ret; | |
677 | else | |
678 | return snprintf(buf, 16 * 2 + 2, | |
679 | "%02X%02X%02X%02X%02X%02X%02X%02X" | |
680 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", | |
681 | sn[0], sn[1], sn[2], sn[3], | |
682 | sn[4], sn[5], sn[6], sn[7], | |
683 | sn[8], sn[9], sn[10], sn[11], | |
684 | sn[12], sn[13], sn[14], sn[15]); | |
685 | } | |
8ba95c69 | 686 | static DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); |
7fe06326 AP |
687 | |
688 | static ssize_t dev_show_vendor(struct device *dev, | |
689 | struct device_attribute *attr, | |
690 | char *buf) | |
691 | { | |
692 | drive_info_struct *drv = to_drv(dev); | |
693 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
694 | char vendor[VENDOR_LEN + 1]; | |
695 | unsigned long flags; | |
696 | int ret = 0; | |
697 | ||
f70dba83 | 698 | spin_lock_irqsave(&h->lock, flags); |
7fe06326 AP |
699 | if (h->busy_configuring) |
700 | ret = -EBUSY; | |
701 | else | |
702 | memcpy(vendor, drv->vendor, VENDOR_LEN + 1); | |
f70dba83 | 703 | spin_unlock_irqrestore(&h->lock, flags); |
7fe06326 AP |
704 | |
705 | if (ret) | |
706 | return ret; | |
707 | else | |
708 | return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); | |
709 | } | |
8ba95c69 | 710 | static DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); |
7fe06326 AP |
711 | |
712 | static ssize_t dev_show_model(struct device *dev, | |
713 | struct device_attribute *attr, | |
714 | char *buf) | |
715 | { | |
716 | drive_info_struct *drv = to_drv(dev); | |
717 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
718 | char model[MODEL_LEN + 1]; | |
719 | unsigned long flags; | |
720 | int ret = 0; | |
721 | ||
f70dba83 | 722 | spin_lock_irqsave(&h->lock, flags); |
7fe06326 AP |
723 | if (h->busy_configuring) |
724 | ret = -EBUSY; | |
725 | else | |
726 | memcpy(model, drv->model, MODEL_LEN + 1); | |
f70dba83 | 727 | spin_unlock_irqrestore(&h->lock, flags); |
7fe06326 AP |
728 | |
729 | if (ret) | |
730 | return ret; | |
731 | else | |
732 | return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); | |
733 | } | |
8ba95c69 | 734 | static DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); |
7fe06326 AP |
735 | |
736 | static ssize_t dev_show_rev(struct device *dev, | |
737 | struct device_attribute *attr, | |
738 | char *buf) | |
739 | { | |
740 | drive_info_struct *drv = to_drv(dev); | |
741 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
742 | char rev[REV_LEN + 1]; | |
743 | unsigned long flags; | |
744 | int ret = 0; | |
745 | ||
f70dba83 | 746 | spin_lock_irqsave(&h->lock, flags); |
7fe06326 AP |
747 | if (h->busy_configuring) |
748 | ret = -EBUSY; | |
749 | else | |
750 | memcpy(rev, drv->rev, REV_LEN + 1); | |
f70dba83 | 751 | spin_unlock_irqrestore(&h->lock, flags); |
7fe06326 AP |
752 | |
753 | if (ret) | |
754 | return ret; | |
755 | else | |
756 | return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); | |
757 | } | |
8ba95c69 | 758 | static DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); |
7fe06326 | 759 | |
ce84a8ae SC |
760 | static ssize_t cciss_show_lunid(struct device *dev, |
761 | struct device_attribute *attr, char *buf) | |
762 | { | |
9cef0d2f SC |
763 | drive_info_struct *drv = to_drv(dev); |
764 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
ce84a8ae SC |
765 | unsigned long flags; |
766 | unsigned char lunid[8]; | |
767 | ||
f70dba83 | 768 | spin_lock_irqsave(&h->lock, flags); |
ce84a8ae | 769 | if (h->busy_configuring) { |
f70dba83 | 770 | spin_unlock_irqrestore(&h->lock, flags); |
ce84a8ae SC |
771 | return -EBUSY; |
772 | } | |
773 | if (!drv->heads) { | |
f70dba83 | 774 | spin_unlock_irqrestore(&h->lock, flags); |
ce84a8ae SC |
775 | return -ENOTTY; |
776 | } | |
777 | memcpy(lunid, drv->LunID, sizeof(lunid)); | |
f70dba83 | 778 | spin_unlock_irqrestore(&h->lock, flags); |
ce84a8ae SC |
779 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", |
780 | lunid[0], lunid[1], lunid[2], lunid[3], | |
781 | lunid[4], lunid[5], lunid[6], lunid[7]); | |
782 | } | |
8ba95c69 | 783 | static DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL); |
ce84a8ae | 784 | |
3ff1111d SC |
785 | static ssize_t cciss_show_raid_level(struct device *dev, |
786 | struct device_attribute *attr, char *buf) | |
787 | { | |
9cef0d2f SC |
788 | drive_info_struct *drv = to_drv(dev); |
789 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
3ff1111d SC |
790 | int raid; |
791 | unsigned long flags; | |
792 | ||
f70dba83 | 793 | spin_lock_irqsave(&h->lock, flags); |
3ff1111d | 794 | if (h->busy_configuring) { |
f70dba83 | 795 | spin_unlock_irqrestore(&h->lock, flags); |
3ff1111d SC |
796 | return -EBUSY; |
797 | } | |
798 | raid = drv->raid_level; | |
f70dba83 | 799 | spin_unlock_irqrestore(&h->lock, flags); |
3ff1111d SC |
800 | if (raid < 0 || raid > RAID_UNKNOWN) |
801 | raid = RAID_UNKNOWN; | |
802 | ||
803 | return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n", | |
804 | raid_label[raid]); | |
805 | } | |
8ba95c69 | 806 | static DEVICE_ATTR(raid_level, S_IRUGO, cciss_show_raid_level, NULL); |
3ff1111d | 807 | |
e272afec SC |
808 | static ssize_t cciss_show_usage_count(struct device *dev, |
809 | struct device_attribute *attr, char *buf) | |
810 | { | |
9cef0d2f SC |
811 | drive_info_struct *drv = to_drv(dev); |
812 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
e272afec SC |
813 | unsigned long flags; |
814 | int count; | |
815 | ||
f70dba83 | 816 | spin_lock_irqsave(&h->lock, flags); |
e272afec | 817 | if (h->busy_configuring) { |
f70dba83 | 818 | spin_unlock_irqrestore(&h->lock, flags); |
e272afec SC |
819 | return -EBUSY; |
820 | } | |
821 | count = drv->usage_count; | |
f70dba83 | 822 | spin_unlock_irqrestore(&h->lock, flags); |
e272afec SC |
823 | return snprintf(buf, 20, "%d\n", count); |
824 | } | |
8ba95c69 | 825 | static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL); |
e272afec | 826 | |
d6f4965d AP |
827 | static struct attribute *cciss_host_attrs[] = { |
828 | &dev_attr_rescan.attr, | |
957c2ec5 | 829 | &dev_attr_resettable.attr, |
f963d270 | 830 | &dev_attr_transport_mode.attr, |
d6f4965d AP |
831 | NULL |
832 | }; | |
833 | ||
834 | static struct attribute_group cciss_host_attr_group = { | |
835 | .attrs = cciss_host_attrs, | |
836 | }; | |
837 | ||
9f792d9f | 838 | static const struct attribute_group *cciss_host_attr_groups[] = { |
d6f4965d AP |
839 | &cciss_host_attr_group, |
840 | NULL | |
841 | }; | |
842 | ||
843 | static struct device_type cciss_host_type = { | |
844 | .name = "cciss_host", | |
845 | .groups = cciss_host_attr_groups, | |
617e1344 | 846 | .release = cciss_hba_release, |
d6f4965d AP |
847 | }; |
848 | ||
7fe06326 AP |
849 | static struct attribute *cciss_dev_attrs[] = { |
850 | &dev_attr_unique_id.attr, | |
851 | &dev_attr_model.attr, | |
852 | &dev_attr_vendor.attr, | |
853 | &dev_attr_rev.attr, | |
ce84a8ae | 854 | &dev_attr_lunid.attr, |
3ff1111d | 855 | &dev_attr_raid_level.attr, |
e272afec | 856 | &dev_attr_usage_count.attr, |
7fe06326 AP |
857 | NULL |
858 | }; | |
859 | ||
860 | static struct attribute_group cciss_dev_attr_group = { | |
861 | .attrs = cciss_dev_attrs, | |
862 | }; | |
863 | ||
a4dbd674 | 864 | static const struct attribute_group *cciss_dev_attr_groups[] = { |
7fe06326 AP |
865 | &cciss_dev_attr_group, |
866 | NULL | |
867 | }; | |
868 | ||
869 | static struct device_type cciss_dev_type = { | |
870 | .name = "cciss_device", | |
871 | .groups = cciss_dev_attr_groups, | |
617e1344 | 872 | .release = cciss_device_release, |
7fe06326 AP |
873 | }; |
874 | ||
875 | static struct bus_type cciss_bus_type = { | |
876 | .name = "cciss", | |
877 | }; | |
878 | ||
617e1344 SC |
879 | /* |
880 | * cciss_hba_release is called when the reference count | |
881 | * of h->dev goes to zero. | |
882 | */ | |
883 | static void cciss_hba_release(struct device *dev) | |
884 | { | |
885 | /* | |
886 | * nothing to do, but need this to avoid a warning | |
887 | * about not having a release handler from lib/kref.c. | |
888 | */ | |
889 | } | |
7fe06326 AP |
890 | |
891 | /* | |
892 | * Initialize sysfs entry for each controller. This sets up and registers | |
893 | * the 'cciss#' directory for each individual controller under | |
894 | * /sys/bus/pci/devices/<dev>/. | |
895 | */ | |
896 | static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) | |
897 | { | |
898 | device_initialize(&h->dev); | |
899 | h->dev.type = &cciss_host_type; | |
900 | h->dev.bus = &cciss_bus_type; | |
901 | dev_set_name(&h->dev, "%s", h->devname); | |
902 | h->dev.parent = &h->pdev->dev; | |
903 | ||
904 | return device_add(&h->dev); | |
905 | } | |
906 | ||
907 | /* | |
908 | * Remove sysfs entries for an hba. | |
909 | */ | |
910 | static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) | |
911 | { | |
912 | device_del(&h->dev); | |
617e1344 SC |
913 | put_device(&h->dev); /* final put. */ |
914 | } | |
915 | ||
916 | /* cciss_device_release is called when the reference count | |
9cef0d2f | 917 | * of h->drv[x]dev goes to zero. |
617e1344 SC |
918 | */ |
919 | static void cciss_device_release(struct device *dev) | |
920 | { | |
9cef0d2f SC |
921 | drive_info_struct *drv = to_drv(dev); |
922 | kfree(drv); | |
7fe06326 AP |
923 | } |
924 | ||
925 | /* | |
926 | * Initialize sysfs for each logical drive. This sets up and registers | |
927 | * the 'c#d#' directory for each individual logical drive under | |
928 | * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from | |
929 | * /sys/block/cciss!c#d# to this entry. | |
930 | */ | |
617e1344 | 931 | static long cciss_create_ld_sysfs_entry(struct ctlr_info *h, |
7fe06326 AP |
932 | int drv_index) |
933 | { | |
617e1344 SC |
934 | struct device *dev; |
935 | ||
9cef0d2f | 936 | if (h->drv[drv_index]->device_initialized) |
8ce51966 SC |
937 | return 0; |
938 | ||
9cef0d2f | 939 | dev = &h->drv[drv_index]->dev; |
617e1344 SC |
940 | device_initialize(dev); |
941 | dev->type = &cciss_dev_type; | |
942 | dev->bus = &cciss_bus_type; | |
943 | dev_set_name(dev, "c%dd%d", h->ctlr, drv_index); | |
944 | dev->parent = &h->dev; | |
9cef0d2f | 945 | h->drv[drv_index]->device_initialized = 1; |
617e1344 | 946 | return device_add(dev); |
7fe06326 AP |
947 | } |
948 | ||
949 | /* | |
950 | * Remove sysfs entries for a logical drive. | |
951 | */ | |
8ce51966 SC |
952 | static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index, |
953 | int ctlr_exiting) | |
7fe06326 | 954 | { |
9cef0d2f | 955 | struct device *dev = &h->drv[drv_index]->dev; |
8ce51966 SC |
956 | |
957 | /* special case for c*d0, we only destroy it on controller exit */ | |
958 | if (drv_index == 0 && !ctlr_exiting) | |
959 | return; | |
960 | ||
617e1344 SC |
961 | device_del(dev); |
962 | put_device(dev); /* the "final" put. */ | |
9cef0d2f | 963 | h->drv[drv_index] = NULL; |
7fe06326 AP |
964 | } |
965 | ||
7c832835 BH |
966 | /* |
967 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 968 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
6b4d96b8 | 969 | * which ones are free or in use. |
7c832835 | 970 | */ |
6b4d96b8 | 971 | static CommandList_struct *cmd_alloc(ctlr_info_t *h) |
1da177e4 LT |
972 | { |
973 | CommandList_struct *c; | |
7c832835 | 974 | int i; |
1da177e4 LT |
975 | u64bit temp64; |
976 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
977 | ||
6b4d96b8 SC |
978 | do { |
979 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); | |
980 | if (i == h->nr_cmds) | |
7c832835 | 981 | return NULL; |
1f118bc4 | 982 | } while (test_and_set_bit(i, h->cmd_pool_bits) != 0); |
6b4d96b8 SC |
983 | c = h->cmd_pool + i; |
984 | memset(c, 0, sizeof(CommandList_struct)); | |
985 | cmd_dma_handle = h->cmd_pool_dhandle + i * sizeof(CommandList_struct); | |
986 | c->err_info = h->errinfo_pool + i; | |
987 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
988 | err_dma_handle = h->errinfo_pool_dhandle | |
989 | + i * sizeof(ErrorInfo_struct); | |
990 | h->nr_allocs++; | |
1da177e4 | 991 | |
6b4d96b8 | 992 | c->cmdindex = i; |
33079b21 | 993 | |
e6e1ee93 | 994 | INIT_LIST_HEAD(&c->list); |
6b4d96b8 SC |
995 | c->busaddr = (__u32) cmd_dma_handle; |
996 | temp64.val = (__u64) err_dma_handle; | |
997 | c->ErrDesc.Addr.lower = temp64.val32.lower; | |
998 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
999 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
7c832835 | 1000 | |
6b4d96b8 SC |
1001 | c->ctlr = h->ctlr; |
1002 | return c; | |
1003 | } | |
33079b21 | 1004 | |
6b4d96b8 SC |
1005 | /* allocate a command using pci_alloc_consistent, used for ioctls, |
1006 | * etc., not for the main i/o path. | |
1007 | */ | |
1008 | static CommandList_struct *cmd_special_alloc(ctlr_info_t *h) | |
1009 | { | |
1010 | CommandList_struct *c; | |
1011 | u64bit temp64; | |
1012 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
1013 | ||
1014 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
1015 | sizeof(CommandList_struct), &cmd_dma_handle); | |
1016 | if (c == NULL) | |
1017 | return NULL; | |
1018 | memset(c, 0, sizeof(CommandList_struct)); | |
1019 | ||
1020 | c->cmdindex = -1; | |
1021 | ||
1022 | c->err_info = (ErrorInfo_struct *) | |
1023 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
1024 | &err_dma_handle); | |
1025 | ||
1026 | if (c->err_info == NULL) { | |
1027 | pci_free_consistent(h->pdev, | |
1028 | sizeof(CommandList_struct), c, cmd_dma_handle); | |
1029 | return NULL; | |
7c832835 | 1030 | } |
6b4d96b8 | 1031 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
1da177e4 | 1032 | |
e6e1ee93 | 1033 | INIT_LIST_HEAD(&c->list); |
1da177e4 | 1034 | c->busaddr = (__u32) cmd_dma_handle; |
7c832835 | 1035 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
1036 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
1037 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
1038 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 1039 | |
7c832835 BH |
1040 | c->ctlr = h->ctlr; |
1041 | return c; | |
1da177e4 LT |
1042 | } |
1043 | ||
6b4d96b8 | 1044 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
1045 | { |
1046 | int i; | |
6b4d96b8 SC |
1047 | |
1048 | i = c - h->cmd_pool; | |
1f118bc4 | 1049 | clear_bit(i, h->cmd_pool_bits); |
6b4d96b8 SC |
1050 | h->nr_frees++; |
1051 | } | |
1052 | ||
1053 | static void cmd_special_free(ctlr_info_t *h, CommandList_struct *c) | |
1054 | { | |
1da177e4 LT |
1055 | u64bit temp64; |
1056 | ||
6b4d96b8 SC |
1057 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
1058 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
1059 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
1060 | c->err_info, (dma_addr_t) temp64.val); | |
16011131 SC |
1061 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), c, |
1062 | (dma_addr_t) cciss_tag_discard_error_bits(h, (u32) c->busaddr)); | |
1da177e4 LT |
1063 | } |
1064 | ||
1065 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
1066 | { | |
7c832835 | 1067 | return disk->queue->queuedata; |
1da177e4 LT |
1068 | } |
1069 | ||
1070 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
1071 | { | |
1072 | return disk->private_data; | |
1073 | } | |
1074 | ||
1075 | /* | |
1076 | * Open. Make sure the device is really there. | |
1077 | */ | |
ef7822c2 | 1078 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
1da177e4 | 1079 | { |
f70dba83 | 1080 | ctlr_info_t *h = get_host(bdev->bd_disk); |
ef7822c2 | 1081 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
1da177e4 | 1082 | |
b2a4a43d | 1083 | dev_dbg(&h->pdev->dev, "cciss_open %s\n", bdev->bd_disk->disk_name); |
2e043986 | 1084 | if (drv->busy_configuring) |
ddd47442 | 1085 | return -EBUSY; |
1da177e4 LT |
1086 | /* |
1087 | * Root is allowed to open raw volume zero even if it's not configured | |
1088 | * so array config can still work. Root is also allowed to open any | |
1089 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
1090 | * disk information. I don't think I really like this | |
1091 | * but I'm already using way to many device nodes to claim another one | |
1092 | * for "raw controller". | |
1093 | */ | |
7a06f789 | 1094 | if (drv->heads == 0) { |
ef7822c2 | 1095 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
1da177e4 | 1096 | /* if not node 0 make sure it is a partition = 0 */ |
ef7822c2 | 1097 | if (MINOR(bdev->bd_dev) & 0x0f) { |
7c832835 | 1098 | return -ENXIO; |
1da177e4 | 1099 | /* if it is, make sure we have a LUN ID */ |
39ccf9a6 SC |
1100 | } else if (memcmp(drv->LunID, CTLR_LUNID, |
1101 | sizeof(drv->LunID))) { | |
1da177e4 LT |
1102 | return -ENXIO; |
1103 | } | |
1104 | } | |
1105 | if (!capable(CAP_SYS_ADMIN)) | |
1106 | return -EPERM; | |
1107 | } | |
1108 | drv->usage_count++; | |
f70dba83 | 1109 | h->usage_count++; |
1da177e4 LT |
1110 | return 0; |
1111 | } | |
7c832835 | 1112 | |
6e9624b8 AB |
1113 | static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode) |
1114 | { | |
1115 | int ret; | |
1116 | ||
2a48fc0a | 1117 | mutex_lock(&cciss_mutex); |
6e9624b8 | 1118 | ret = cciss_open(bdev, mode); |
2a48fc0a | 1119 | mutex_unlock(&cciss_mutex); |
6e9624b8 AB |
1120 | |
1121 | return ret; | |
1122 | } | |
1123 | ||
1da177e4 LT |
1124 | /* |
1125 | * Close. Sync first. | |
1126 | */ | |
ef7822c2 | 1127 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
1da177e4 | 1128 | { |
f70dba83 | 1129 | ctlr_info_t *h; |
6e9624b8 | 1130 | drive_info_struct *drv; |
1da177e4 | 1131 | |
2a48fc0a | 1132 | mutex_lock(&cciss_mutex); |
f70dba83 | 1133 | h = get_host(disk); |
6e9624b8 | 1134 | drv = get_drv(disk); |
b2a4a43d | 1135 | dev_dbg(&h->pdev->dev, "cciss_release %s\n", disk->disk_name); |
1da177e4 | 1136 | drv->usage_count--; |
f70dba83 | 1137 | h->usage_count--; |
2a48fc0a | 1138 | mutex_unlock(&cciss_mutex); |
1da177e4 LT |
1139 | return 0; |
1140 | } | |
1141 | ||
ef7822c2 AV |
1142 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
1143 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1144 | { |
1145 | int ret; | |
2a48fc0a | 1146 | mutex_lock(&cciss_mutex); |
ef7822c2 | 1147 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
2a48fc0a | 1148 | mutex_unlock(&cciss_mutex); |
1da177e4 LT |
1149 | return ret; |
1150 | } | |
1151 | ||
8a6cfeb6 AB |
1152 | #ifdef CONFIG_COMPAT |
1153 | ||
ef7822c2 AV |
1154 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
1155 | unsigned cmd, unsigned long arg); | |
1156 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, | |
1157 | unsigned cmd, unsigned long arg); | |
1da177e4 | 1158 | |
ef7822c2 AV |
1159 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
1160 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1161 | { |
1162 | switch (cmd) { | |
1163 | case CCISS_GETPCIINFO: | |
1164 | case CCISS_GETINTINFO: | |
1165 | case CCISS_SETINTINFO: | |
1166 | case CCISS_GETNODENAME: | |
1167 | case CCISS_SETNODENAME: | |
1168 | case CCISS_GETHEARTBEAT: | |
1169 | case CCISS_GETBUSTYPES: | |
1170 | case CCISS_GETFIRMVER: | |
1171 | case CCISS_GETDRIVVER: | |
1172 | case CCISS_REVALIDVOLS: | |
1173 | case CCISS_DEREGDISK: | |
1174 | case CCISS_REGNEWDISK: | |
1175 | case CCISS_REGNEWD: | |
1176 | case CCISS_RESCANDISK: | |
1177 | case CCISS_GETLUNINFO: | |
ef7822c2 | 1178 | return do_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
1179 | |
1180 | case CCISS_PASSTHRU32: | |
ef7822c2 | 1181 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
1da177e4 | 1182 | case CCISS_BIG_PASSTHRU32: |
ef7822c2 | 1183 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
1da177e4 LT |
1184 | |
1185 | default: | |
1186 | return -ENOIOCTLCMD; | |
1187 | } | |
1188 | } | |
1189 | ||
ef7822c2 AV |
1190 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
1191 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1192 | { |
1193 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 1194 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
1195 | IOCTL_Command_struct arg64; |
1196 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
1197 | int err; | |
1198 | u32 cp; | |
1199 | ||
1200 | err = 0; | |
7c832835 BH |
1201 | err |= |
1202 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1203 | sizeof(arg64.LUN_info)); | |
1204 | err |= | |
1205 | copy_from_user(&arg64.Request, &arg32->Request, | |
1206 | sizeof(arg64.Request)); | |
1207 | err |= | |
1208 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1209 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1210 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1211 | err |= get_user(cp, &arg32->buf); | |
1212 | arg64.buf = compat_ptr(cp); | |
1213 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1214 | ||
1215 | if (err) | |
1216 | return -EFAULT; | |
1217 | ||
ef7822c2 | 1218 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1219 | if (err) |
1220 | return err; | |
7c832835 BH |
1221 | err |= |
1222 | copy_in_user(&arg32->error_info, &p->error_info, | |
1223 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1224 | if (err) |
1225 | return -EFAULT; | |
1226 | return err; | |
1227 | } | |
1228 | ||
ef7822c2 AV |
1229 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
1230 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1231 | { |
1232 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 1233 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 1234 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
1235 | BIG_IOCTL_Command_struct __user *p = |
1236 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
1237 | int err; |
1238 | u32 cp; | |
1239 | ||
7ab5118d | 1240 | memset(&arg64, 0, sizeof(arg64)); |
1da177e4 | 1241 | err = 0; |
7c832835 BH |
1242 | err |= |
1243 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1244 | sizeof(arg64.LUN_info)); | |
1245 | err |= | |
1246 | copy_from_user(&arg64.Request, &arg32->Request, | |
1247 | sizeof(arg64.Request)); | |
1248 | err |= | |
1249 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1250 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1251 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1252 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
1253 | err |= get_user(cp, &arg32->buf); | |
1254 | arg64.buf = compat_ptr(cp); | |
1255 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1256 | ||
1257 | if (err) | |
7c832835 | 1258 | return -EFAULT; |
1da177e4 | 1259 | |
ef7822c2 | 1260 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1261 | if (err) |
1262 | return err; | |
7c832835 BH |
1263 | err |= |
1264 | copy_in_user(&arg32->error_info, &p->error_info, | |
1265 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1266 | if (err) |
1267 | return -EFAULT; | |
1268 | return err; | |
1269 | } | |
1270 | #endif | |
a885c8c4 CH |
1271 | |
1272 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
1273 | { | |
1274 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1275 | ||
1276 | if (!drv->cylinders) | |
1277 | return -ENXIO; | |
1278 | ||
1279 | geo->heads = drv->heads; | |
1280 | geo->sectors = drv->sectors; | |
1281 | geo->cylinders = drv->cylinders; | |
1282 | return 0; | |
1283 | } | |
1284 | ||
f70dba83 | 1285 | static void check_ioctl_unit_attention(ctlr_info_t *h, CommandList_struct *c) |
0a9279cc MM |
1286 | { |
1287 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
1288 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) | |
f70dba83 | 1289 | (void)check_for_unit_attention(h, c); |
0a9279cc | 1290 | } |
0a25a5ae SC |
1291 | |
1292 | static int cciss_getpciinfo(ctlr_info_t *h, void __user *argp) | |
1da177e4 | 1293 | { |
0a25a5ae | 1294 | cciss_pci_info_struct pciinfo; |
1da177e4 | 1295 | |
0a25a5ae SC |
1296 | if (!argp) |
1297 | return -EINVAL; | |
1298 | pciinfo.domain = pci_domain_nr(h->pdev->bus); | |
1299 | pciinfo.bus = h->pdev->bus->number; | |
1300 | pciinfo.dev_fn = h->pdev->devfn; | |
1301 | pciinfo.board_id = h->board_id; | |
1302 | if (copy_to_user(argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
1303 | return -EFAULT; | |
1304 | return 0; | |
1305 | } | |
1da177e4 | 1306 | |
576e661c SC |
1307 | static int cciss_getintinfo(ctlr_info_t *h, void __user *argp) |
1308 | { | |
1309 | cciss_coalint_struct intinfo; | |
1da177e4 | 1310 | |
576e661c SC |
1311 | if (!argp) |
1312 | return -EINVAL; | |
1313 | intinfo.delay = readl(&h->cfgtable->HostWrite.CoalIntDelay); | |
1314 | intinfo.count = readl(&h->cfgtable->HostWrite.CoalIntCount); | |
1315 | if (copy_to_user | |
1316 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
1317 | return -EFAULT; | |
1318 | return 0; | |
1319 | } | |
1da177e4 | 1320 | |
4c800eed SC |
1321 | static int cciss_setintinfo(ctlr_info_t *h, void __user *argp) |
1322 | { | |
1323 | cciss_coalint_struct intinfo; | |
1324 | unsigned long flags; | |
1325 | int i; | |
1da177e4 | 1326 | |
4c800eed SC |
1327 | if (!argp) |
1328 | return -EINVAL; | |
1329 | if (!capable(CAP_SYS_ADMIN)) | |
1330 | return -EPERM; | |
1331 | if (copy_from_user(&intinfo, argp, sizeof(intinfo))) | |
1332 | return -EFAULT; | |
1333 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
1334 | return -EINVAL; | |
1335 | spin_lock_irqsave(&h->lock, flags); | |
1336 | /* Update the field, and then ring the doorbell */ | |
1337 | writel(intinfo.delay, &(h->cfgtable->HostWrite.CoalIntDelay)); | |
1338 | writel(intinfo.count, &(h->cfgtable->HostWrite.CoalIntCount)); | |
1339 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
1340 | ||
1341 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1342 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) | |
1343 | break; | |
1344 | udelay(1000); /* delay and try again */ | |
1345 | } | |
1346 | spin_unlock_irqrestore(&h->lock, flags); | |
1347 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1348 | return -EAGAIN; | |
1349 | return 0; | |
1350 | } | |
1da177e4 | 1351 | |
25216109 SC |
1352 | static int cciss_getnodename(ctlr_info_t *h, void __user *argp) |
1353 | { | |
1354 | NodeName_type NodeName; | |
1355 | int i; | |
1da177e4 | 1356 | |
25216109 SC |
1357 | if (!argp) |
1358 | return -EINVAL; | |
1359 | for (i = 0; i < 16; i++) | |
1360 | NodeName[i] = readb(&h->cfgtable->ServerName[i]); | |
1361 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
1362 | return -EFAULT; | |
1363 | return 0; | |
1364 | } | |
7c832835 | 1365 | |
4f43f32c SC |
1366 | static int cciss_setnodename(ctlr_info_t *h, void __user *argp) |
1367 | { | |
1368 | NodeName_type NodeName; | |
1369 | unsigned long flags; | |
1370 | int i; | |
7c832835 | 1371 | |
4f43f32c SC |
1372 | if (!argp) |
1373 | return -EINVAL; | |
1374 | if (!capable(CAP_SYS_ADMIN)) | |
1375 | return -EPERM; | |
1376 | if (copy_from_user(NodeName, argp, sizeof(NodeName_type))) | |
1377 | return -EFAULT; | |
1378 | spin_lock_irqsave(&h->lock, flags); | |
1379 | /* Update the field, and then ring the doorbell */ | |
1380 | for (i = 0; i < 16; i++) | |
1381 | writeb(NodeName[i], &h->cfgtable->ServerName[i]); | |
1382 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
1383 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1384 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) | |
1385 | break; | |
1386 | udelay(1000); /* delay and try again */ | |
1387 | } | |
1388 | spin_unlock_irqrestore(&h->lock, flags); | |
1389 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1390 | return -EAGAIN; | |
1391 | return 0; | |
1392 | } | |
7c832835 | 1393 | |
93c74931 SC |
1394 | static int cciss_getheartbeat(ctlr_info_t *h, void __user *argp) |
1395 | { | |
1396 | Heartbeat_type heartbeat; | |
7c832835 | 1397 | |
93c74931 SC |
1398 | if (!argp) |
1399 | return -EINVAL; | |
1400 | heartbeat = readl(&h->cfgtable->HeartBeat); | |
1401 | if (copy_to_user(argp, &heartbeat, sizeof(Heartbeat_type))) | |
1402 | return -EFAULT; | |
1403 | return 0; | |
1404 | } | |
0a9279cc | 1405 | |
d18dfad4 SC |
1406 | static int cciss_getbustypes(ctlr_info_t *h, void __user *argp) |
1407 | { | |
1408 | BusTypes_type BusTypes; | |
7c832835 | 1409 | |
d18dfad4 SC |
1410 | if (!argp) |
1411 | return -EINVAL; | |
1412 | BusTypes = readl(&h->cfgtable->BusTypes); | |
1413 | if (copy_to_user(argp, &BusTypes, sizeof(BusTypes_type))) | |
1414 | return -EFAULT; | |
1415 | return 0; | |
1416 | } | |
1417 | ||
8a4f7fbf SC |
1418 | static int cciss_getfirmver(ctlr_info_t *h, void __user *argp) |
1419 | { | |
1420 | FirmwareVer_type firmware; | |
1421 | ||
1422 | if (!argp) | |
1423 | return -EINVAL; | |
1424 | memcpy(firmware, h->firm_ver, 4); | |
1425 | ||
1426 | if (copy_to_user | |
1427 | (argp, firmware, sizeof(FirmwareVer_type))) | |
1428 | return -EFAULT; | |
1429 | return 0; | |
1430 | } | |
1431 | ||
c525919d SC |
1432 | static int cciss_getdrivver(ctlr_info_t *h, void __user *argp) |
1433 | { | |
1434 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1435 | ||
1436 | if (!argp) | |
1437 | return -EINVAL; | |
1438 | if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) | |
1439 | return -EFAULT; | |
1440 | return 0; | |
1441 | } | |
1442 | ||
0894b32c SC |
1443 | static int cciss_getluninfo(ctlr_info_t *h, |
1444 | struct gendisk *disk, void __user *argp) | |
1445 | { | |
1446 | LogvolInfo_struct luninfo; | |
1447 | drive_info_struct *drv = get_drv(disk); | |
1448 | ||
1449 | if (!argp) | |
1450 | return -EINVAL; | |
1451 | memcpy(&luninfo.LunID, drv->LunID, sizeof(luninfo.LunID)); | |
1452 | luninfo.num_opens = drv->usage_count; | |
1453 | luninfo.num_parts = 0; | |
1454 | if (copy_to_user(argp, &luninfo, sizeof(LogvolInfo_struct))) | |
1455 | return -EFAULT; | |
1456 | return 0; | |
1457 | } | |
1458 | ||
f32f125b SC |
1459 | static int cciss_passthru(ctlr_info_t *h, void __user *argp) |
1460 | { | |
1461 | IOCTL_Command_struct iocommand; | |
1462 | CommandList_struct *c; | |
1463 | char *buff = NULL; | |
1464 | u64bit temp64; | |
1465 | DECLARE_COMPLETION_ONSTACK(wait); | |
1466 | ||
1467 | if (!argp) | |
1468 | return -EINVAL; | |
1469 | ||
1470 | if (!capable(CAP_SYS_RAWIO)) | |
1471 | return -EPERM; | |
1472 | ||
1473 | if (copy_from_user | |
1474 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
1475 | return -EFAULT; | |
1476 | if ((iocommand.buf_size < 1) && | |
1477 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
1478 | return -EINVAL; | |
1479 | } | |
1480 | if (iocommand.buf_size > 0) { | |
1481 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
1482 | if (buff == NULL) | |
1483 | return -EFAULT; | |
1484 | } | |
1485 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
1486 | /* Copy the data into the buffer we created */ | |
1487 | if (copy_from_user(buff, iocommand.buf, iocommand.buf_size)) { | |
1488 | kfree(buff); | |
1489 | return -EFAULT; | |
1490 | } | |
1491 | } else { | |
1492 | memset(buff, 0, iocommand.buf_size); | |
1493 | } | |
1494 | c = cmd_special_alloc(h); | |
1495 | if (!c) { | |
1496 | kfree(buff); | |
1497 | return -ENOMEM; | |
1498 | } | |
1499 | /* Fill in the command type */ | |
1500 | c->cmd_type = CMD_IOCTL_PEND; | |
1501 | /* Fill in Command Header */ | |
1502 | c->Header.ReplyQueue = 0; /* unused in simple mode */ | |
1503 | if (iocommand.buf_size > 0) { /* buffer to fill */ | |
1504 | c->Header.SGList = 1; | |
1505 | c->Header.SGTotal = 1; | |
1506 | } else { /* no buffers to fill */ | |
1507 | c->Header.SGList = 0; | |
1508 | c->Header.SGTotal = 0; | |
1509 | } | |
1510 | c->Header.LUN = iocommand.LUN_info; | |
1511 | /* use the kernel address the cmd block for tag */ | |
1512 | c->Header.Tag.lower = c->busaddr; | |
1513 | ||
1514 | /* Fill in Request block */ | |
1515 | c->Request = iocommand.Request; | |
1516 | ||
1517 | /* Fill in the scatter gather information */ | |
1518 | if (iocommand.buf_size > 0) { | |
1519 | temp64.val = pci_map_single(h->pdev, buff, | |
1520 | iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); | |
1521 | c->SG[0].Addr.lower = temp64.val32.lower; | |
1522 | c->SG[0].Addr.upper = temp64.val32.upper; | |
1523 | c->SG[0].Len = iocommand.buf_size; | |
1524 | c->SG[0].Ext = 0; /* we are not chaining */ | |
1525 | } | |
1526 | c->waiting = &wait; | |
1527 | ||
1528 | enqueue_cmd_and_start_io(h, c); | |
1529 | wait_for_completion(&wait); | |
1530 | ||
1531 | /* unlock the buffers from DMA */ | |
1532 | temp64.val32.lower = c->SG[0].Addr.lower; | |
1533 | temp64.val32.upper = c->SG[0].Addr.upper; | |
1534 | pci_unmap_single(h->pdev, (dma_addr_t) temp64.val, iocommand.buf_size, | |
1535 | PCI_DMA_BIDIRECTIONAL); | |
1536 | check_ioctl_unit_attention(h, c); | |
1537 | ||
1538 | /* Copy the error information out */ | |
1539 | iocommand.error_info = *(c->err_info); | |
1540 | if (copy_to_user(argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
1541 | kfree(buff); | |
1542 | cmd_special_free(h, c); | |
1543 | return -EFAULT; | |
1544 | } | |
1545 | ||
1546 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
1547 | /* Copy the data out of the buffer we created */ | |
1548 | if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) { | |
7c832835 | 1549 | kfree(buff); |
6b4d96b8 | 1550 | cmd_special_free(h, c); |
f32f125b | 1551 | return -EFAULT; |
1da177e4 | 1552 | } |
f32f125b SC |
1553 | } |
1554 | kfree(buff); | |
1555 | cmd_special_free(h, c); | |
1556 | return 0; | |
1557 | } | |
1558 | ||
0c9f5ba7 SC |
1559 | static int cciss_bigpassthru(ctlr_info_t *h, void __user *argp) |
1560 | { | |
1561 | BIG_IOCTL_Command_struct *ioc; | |
1562 | CommandList_struct *c; | |
1563 | unsigned char **buff = NULL; | |
1564 | int *buff_size = NULL; | |
1565 | u64bit temp64; | |
1566 | BYTE sg_used = 0; | |
1567 | int status = 0; | |
1568 | int i; | |
1569 | DECLARE_COMPLETION_ONSTACK(wait); | |
1570 | __u32 left; | |
1571 | __u32 sz; | |
1572 | BYTE __user *data_ptr; | |
1573 | ||
1574 | if (!argp) | |
1575 | return -EINVAL; | |
1576 | if (!capable(CAP_SYS_RAWIO)) | |
1577 | return -EPERM; | |
fcab1c11 | 1578 | ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); |
0c9f5ba7 SC |
1579 | if (!ioc) { |
1580 | status = -ENOMEM; | |
1581 | goto cleanup1; | |
1582 | } | |
1583 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1584 | status = -EFAULT; | |
1585 | goto cleanup1; | |
1586 | } | |
1587 | if ((ioc->buf_size < 1) && | |
1588 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1589 | status = -EINVAL; | |
1590 | goto cleanup1; | |
1591 | } | |
1592 | /* Check kmalloc limits using all SGs */ | |
1593 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1594 | status = -EINVAL; | |
1595 | goto cleanup1; | |
1596 | } | |
1597 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1598 | status = -EINVAL; | |
1599 | goto cleanup1; | |
1600 | } | |
1601 | buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1602 | if (!buff) { | |
1603 | status = -ENOMEM; | |
1604 | goto cleanup1; | |
1605 | } | |
1606 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL); | |
1607 | if (!buff_size) { | |
1608 | status = -ENOMEM; | |
1609 | goto cleanup1; | |
1610 | } | |
1611 | left = ioc->buf_size; | |
1612 | data_ptr = ioc->buf; | |
1613 | while (left) { | |
1614 | sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; | |
1615 | buff_size[sg_used] = sz; | |
1616 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1617 | if (buff[sg_used] == NULL) { | |
1618 | status = -ENOMEM; | |
1619 | goto cleanup1; | |
1620 | } | |
1621 | if (ioc->Request.Type.Direction == XFER_WRITE) { | |
1622 | if (copy_from_user(buff[sg_used], data_ptr, sz)) { | |
7c832835 BH |
1623 | status = -EFAULT; |
1624 | goto cleanup1; | |
1625 | } | |
0c9f5ba7 SC |
1626 | } else { |
1627 | memset(buff[sg_used], 0, sz); | |
1628 | } | |
1629 | left -= sz; | |
1630 | data_ptr += sz; | |
1631 | sg_used++; | |
1632 | } | |
1633 | c = cmd_special_alloc(h); | |
1634 | if (!c) { | |
1635 | status = -ENOMEM; | |
1636 | goto cleanup1; | |
1637 | } | |
1638 | c->cmd_type = CMD_IOCTL_PEND; | |
1639 | c->Header.ReplyQueue = 0; | |
fcfb5c0c SC |
1640 | c->Header.SGList = sg_used; |
1641 | c->Header.SGTotal = sg_used; | |
0c9f5ba7 SC |
1642 | c->Header.LUN = ioc->LUN_info; |
1643 | c->Header.Tag.lower = c->busaddr; | |
1644 | ||
1645 | c->Request = ioc->Request; | |
fcfb5c0c SC |
1646 | for (i = 0; i < sg_used; i++) { |
1647 | temp64.val = pci_map_single(h->pdev, buff[i], buff_size[i], | |
0c9f5ba7 | 1648 | PCI_DMA_BIDIRECTIONAL); |
fcfb5c0c SC |
1649 | c->SG[i].Addr.lower = temp64.val32.lower; |
1650 | c->SG[i].Addr.upper = temp64.val32.upper; | |
1651 | c->SG[i].Len = buff_size[i]; | |
1652 | c->SG[i].Ext = 0; /* we are not chaining */ | |
0c9f5ba7 SC |
1653 | } |
1654 | c->waiting = &wait; | |
1655 | enqueue_cmd_and_start_io(h, c); | |
1656 | wait_for_completion(&wait); | |
1657 | /* unlock the buffers from DMA */ | |
1658 | for (i = 0; i < sg_used; i++) { | |
1659 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1660 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1661 | pci_unmap_single(h->pdev, | |
1662 | (dma_addr_t) temp64.val, buff_size[i], | |
1663 | PCI_DMA_BIDIRECTIONAL); | |
1664 | } | |
1665 | check_ioctl_unit_attention(h, c); | |
1666 | /* Copy the error information out */ | |
1667 | ioc->error_info = *(c->err_info); | |
1668 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1669 | cmd_special_free(h, c); | |
1670 | status = -EFAULT; | |
1671 | goto cleanup1; | |
1672 | } | |
1673 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1674 | /* Copy the data out of the buffer we created */ | |
1675 | BYTE __user *ptr = ioc->buf; | |
1676 | for (i = 0; i < sg_used; i++) { | |
1677 | if (copy_to_user(ptr, buff[i], buff_size[i])) { | |
6b4d96b8 | 1678 | cmd_special_free(h, c); |
7c832835 BH |
1679 | status = -EFAULT; |
1680 | goto cleanup1; | |
1681 | } | |
0c9f5ba7 | 1682 | ptr += buff_size[i]; |
1da177e4 | 1683 | } |
0c9f5ba7 SC |
1684 | } |
1685 | cmd_special_free(h, c); | |
1686 | status = 0; | |
1687 | cleanup1: | |
1688 | if (buff) { | |
1689 | for (i = 0; i < sg_used; i++) | |
1690 | kfree(buff[i]); | |
1691 | kfree(buff); | |
1692 | } | |
1693 | kfree(buff_size); | |
1694 | kfree(ioc); | |
1695 | return status; | |
1696 | } | |
1697 | ||
ef7822c2 | 1698 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
c525919d | 1699 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1700 | { |
1da177e4 | 1701 | struct gendisk *disk = bdev->bd_disk; |
f70dba83 | 1702 | ctlr_info_t *h = get_host(disk); |
1da177e4 LT |
1703 | void __user *argp = (void __user *)arg; |
1704 | ||
b2a4a43d SC |
1705 | dev_dbg(&h->pdev->dev, "cciss_ioctl: Called with cmd=%x %lx\n", |
1706 | cmd, arg); | |
7c832835 | 1707 | switch (cmd) { |
1da177e4 | 1708 | case CCISS_GETPCIINFO: |
0a25a5ae | 1709 | return cciss_getpciinfo(h, argp); |
1da177e4 | 1710 | case CCISS_GETINTINFO: |
576e661c | 1711 | return cciss_getintinfo(h, argp); |
1da177e4 | 1712 | case CCISS_SETINTINFO: |
4c800eed | 1713 | return cciss_setintinfo(h, argp); |
1da177e4 | 1714 | case CCISS_GETNODENAME: |
25216109 | 1715 | return cciss_getnodename(h, argp); |
1da177e4 | 1716 | case CCISS_SETNODENAME: |
4f43f32c | 1717 | return cciss_setnodename(h, argp); |
1da177e4 | 1718 | case CCISS_GETHEARTBEAT: |
93c74931 | 1719 | return cciss_getheartbeat(h, argp); |
1da177e4 | 1720 | case CCISS_GETBUSTYPES: |
d18dfad4 | 1721 | return cciss_getbustypes(h, argp); |
1da177e4 | 1722 | case CCISS_GETFIRMVER: |
8a4f7fbf | 1723 | return cciss_getfirmver(h, argp); |
7c832835 | 1724 | case CCISS_GETDRIVVER: |
c525919d | 1725 | return cciss_getdrivver(h, argp); |
6ae5ce8e MM |
1726 | case CCISS_DEREGDISK: |
1727 | case CCISS_REGNEWD: | |
1da177e4 | 1728 | case CCISS_REVALIDVOLS: |
f70dba83 | 1729 | return rebuild_lun_table(h, 0, 1); |
0894b32c SC |
1730 | case CCISS_GETLUNINFO: |
1731 | return cciss_getluninfo(h, disk, argp); | |
1da177e4 | 1732 | case CCISS_PASSTHRU: |
f32f125b | 1733 | return cciss_passthru(h, argp); |
0c9f5ba7 SC |
1734 | case CCISS_BIG_PASSTHRU: |
1735 | return cciss_bigpassthru(h, argp); | |
03bbfee5 | 1736 | |
577ebb37 | 1737 | /* scsi_cmd_blk_ioctl handles these, below, though some are not */ |
03bbfee5 MMOD |
1738 | /* very meaningful for cciss. SG_IO is the main one people want. */ |
1739 | ||
1740 | case SG_GET_VERSION_NUM: | |
1741 | case SG_SET_TIMEOUT: | |
1742 | case SG_GET_TIMEOUT: | |
1743 | case SG_GET_RESERVED_SIZE: | |
1744 | case SG_SET_RESERVED_SIZE: | |
1745 | case SG_EMULATED_HOST: | |
1746 | case SG_IO: | |
1747 | case SCSI_IOCTL_SEND_COMMAND: | |
577ebb37 | 1748 | return scsi_cmd_blk_ioctl(bdev, mode, cmd, argp); |
03bbfee5 | 1749 | |
577ebb37 | 1750 | /* scsi_cmd_blk_ioctl would normally handle these, below, but */ |
03bbfee5 MMOD |
1751 | /* they aren't a good fit for cciss, as CD-ROMs are */ |
1752 | /* not supported, and we don't have any bus/target/lun */ | |
1753 | /* which we present to the kernel. */ | |
1754 | ||
1755 | case CDROM_SEND_PACKET: | |
1756 | case CDROMCLOSETRAY: | |
1757 | case CDROMEJECT: | |
1758 | case SCSI_IOCTL_GET_IDLUN: | |
1759 | case SCSI_IOCTL_GET_BUS_NUMBER: | |
1da177e4 LT |
1760 | default: |
1761 | return -ENOTTY; | |
1762 | } | |
1da177e4 LT |
1763 | } |
1764 | ||
7b30f092 JA |
1765 | static void cciss_check_queues(ctlr_info_t *h) |
1766 | { | |
1767 | int start_queue = h->next_to_run; | |
1768 | int i; | |
1769 | ||
1770 | /* check to see if we have maxed out the number of commands that can | |
1771 | * be placed on the queue. If so then exit. We do this check here | |
1772 | * in case the interrupt we serviced was from an ioctl and did not | |
1773 | * free any new commands. | |
1774 | */ | |
f880632f | 1775 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1776 | return; |
1777 | ||
1778 | /* We have room on the queue for more commands. Now we need to queue | |
1779 | * them up. We will also keep track of the next queue to run so | |
1780 | * that every queue gets a chance to be started first. | |
1781 | */ | |
1782 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1783 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1784 | /* make sure the disk has been added and the drive is real | |
1785 | * because this can be called from the middle of init_one. | |
1786 | */ | |
9cef0d2f SC |
1787 | if (!h->drv[curr_queue]) |
1788 | continue; | |
1789 | if (!(h->drv[curr_queue]->queue) || | |
1790 | !(h->drv[curr_queue]->heads)) | |
7b30f092 JA |
1791 | continue; |
1792 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1793 | ||
1794 | /* check to see if we have maxed out the number of commands | |
1795 | * that can be placed on the queue. | |
1796 | */ | |
f880632f | 1797 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1798 | if (curr_queue == start_queue) { |
1799 | h->next_to_run = | |
1800 | (start_queue + 1) % (h->highest_lun + 1); | |
1801 | break; | |
1802 | } else { | |
1803 | h->next_to_run = curr_queue; | |
1804 | break; | |
1805 | } | |
7b30f092 JA |
1806 | } |
1807 | } | |
1808 | } | |
1809 | ||
ca1e0484 MM |
1810 | static void cciss_softirq_done(struct request *rq) |
1811 | { | |
f70dba83 SC |
1812 | CommandList_struct *c = rq->completion_data; |
1813 | ctlr_info_t *h = hba[c->ctlr]; | |
1814 | SGDescriptor_struct *curr_sg = c->SG; | |
ca1e0484 | 1815 | u64bit temp64; |
664a717d | 1816 | unsigned long flags; |
ca1e0484 | 1817 | int i, ddir; |
5c07a311 | 1818 | int sg_index = 0; |
ca1e0484 | 1819 | |
f70dba83 | 1820 | if (c->Request.Type.Direction == XFER_READ) |
ca1e0484 MM |
1821 | ddir = PCI_DMA_FROMDEVICE; |
1822 | else | |
1823 | ddir = PCI_DMA_TODEVICE; | |
1824 | ||
1825 | /* command did not need to be retried */ | |
1826 | /* unmap the DMA mapping for all the scatter gather elements */ | |
f70dba83 | 1827 | for (i = 0; i < c->Header.SGList; i++) { |
5c07a311 | 1828 | if (curr_sg[sg_index].Ext == CCISS_SG_CHAIN) { |
f70dba83 | 1829 | cciss_unmap_sg_chain_block(h, c); |
5c07a311 | 1830 | /* Point to the next block */ |
f70dba83 | 1831 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
5c07a311 DB |
1832 | sg_index = 0; |
1833 | } | |
1834 | temp64.val32.lower = curr_sg[sg_index].Addr.lower; | |
1835 | temp64.val32.upper = curr_sg[sg_index].Addr.upper; | |
1836 | pci_unmap_page(h->pdev, temp64.val, curr_sg[sg_index].Len, | |
1837 | ddir); | |
1838 | ++sg_index; | |
ca1e0484 MM |
1839 | } |
1840 | ||
b2a4a43d | 1841 | dev_dbg(&h->pdev->dev, "Done with %p\n", rq); |
ca1e0484 | 1842 | |
c3a4d78c | 1843 | /* set the residual count for pc requests */ |
33659ebb | 1844 | if (rq->cmd_type == REQ_TYPE_BLOCK_PC) |
f70dba83 | 1845 | rq->resid_len = c->err_info->ResidualCnt; |
ac44e5b2 | 1846 | |
c3a4d78c | 1847 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
3daeea29 | 1848 | |
ca1e0484 | 1849 | spin_lock_irqsave(&h->lock, flags); |
6b4d96b8 | 1850 | cmd_free(h, c); |
7b30f092 | 1851 | cciss_check_queues(h); |
ca1e0484 MM |
1852 | spin_unlock_irqrestore(&h->lock, flags); |
1853 | } | |
1854 | ||
39ccf9a6 SC |
1855 | static inline void log_unit_to_scsi3addr(ctlr_info_t *h, |
1856 | unsigned char scsi3addr[], uint32_t log_unit) | |
b57695fe | 1857 | { |
9cef0d2f SC |
1858 | memcpy(scsi3addr, h->drv[log_unit]->LunID, |
1859 | sizeof(h->drv[log_unit]->LunID)); | |
b57695fe | 1860 | } |
1861 | ||
7fe06326 AP |
1862 | /* This function gets the SCSI vendor, model, and revision of a logical drive |
1863 | * via the inquiry page 0. Model, vendor, and rev are set to empty strings if | |
1864 | * they cannot be read. | |
1865 | */ | |
f70dba83 | 1866 | static void cciss_get_device_descr(ctlr_info_t *h, int logvol, |
7fe06326 AP |
1867 | char *vendor, char *model, char *rev) |
1868 | { | |
1869 | int rc; | |
1870 | InquiryData_struct *inq_buf; | |
b57695fe | 1871 | unsigned char scsi3addr[8]; |
7fe06326 AP |
1872 | |
1873 | *vendor = '\0'; | |
1874 | *model = '\0'; | |
1875 | *rev = '\0'; | |
1876 | ||
1877 | inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
1878 | if (!inq_buf) | |
1879 | return; | |
1880 | ||
f70dba83 SC |
1881 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
1882 | rc = sendcmd_withirq(h, CISS_INQUIRY, inq_buf, sizeof(*inq_buf), 0, | |
7b838bde | 1883 | scsi3addr, TYPE_CMD); |
7fe06326 AP |
1884 | if (rc == IO_OK) { |
1885 | memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); | |
1886 | vendor[VENDOR_LEN] = '\0'; | |
1887 | memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); | |
1888 | model[MODEL_LEN] = '\0'; | |
1889 | memcpy(rev, &inq_buf->data_byte[32], REV_LEN); | |
1890 | rev[REV_LEN] = '\0'; | |
1891 | } | |
1892 | ||
1893 | kfree(inq_buf); | |
1894 | return; | |
1895 | } | |
1896 | ||
a72da29b MM |
1897 | /* This function gets the serial number of a logical drive via |
1898 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial | |
1899 | * number cannot be had, for whatever reason, 16 bytes of 0xff | |
1900 | * are returned instead. | |
1901 | */ | |
f70dba83 | 1902 | static void cciss_get_serial_no(ctlr_info_t *h, int logvol, |
a72da29b MM |
1903 | unsigned char *serial_no, int buflen) |
1904 | { | |
1905 | #define PAGE_83_INQ_BYTES 64 | |
1906 | int rc; | |
1907 | unsigned char *buf; | |
b57695fe | 1908 | unsigned char scsi3addr[8]; |
a72da29b MM |
1909 | |
1910 | if (buflen > 16) | |
1911 | buflen = 16; | |
1912 | memset(serial_no, 0xff, buflen); | |
1913 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); | |
1914 | if (!buf) | |
1915 | return; | |
1916 | memset(serial_no, 0, buflen); | |
f70dba83 SC |
1917 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
1918 | rc = sendcmd_withirq(h, CISS_INQUIRY, buf, | |
7b838bde | 1919 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
a72da29b MM |
1920 | if (rc == IO_OK) |
1921 | memcpy(serial_no, &buf[8], buflen); | |
1922 | kfree(buf); | |
1923 | return; | |
1924 | } | |
1925 | ||
617e1344 SC |
1926 | /* |
1927 | * cciss_add_disk sets up the block device queue for a logical drive | |
1928 | */ | |
1929 | static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, | |
6ae5ce8e MM |
1930 | int drv_index) |
1931 | { | |
1932 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); | |
e8074f79 SC |
1933 | if (!disk->queue) |
1934 | goto init_queue_failure; | |
6ae5ce8e MM |
1935 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); |
1936 | disk->major = h->major; | |
1937 | disk->first_minor = drv_index << NWD_SHIFT; | |
1938 | disk->fops = &cciss_fops; | |
9cef0d2f SC |
1939 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
1940 | goto cleanup_queue; | |
1941 | disk->private_data = h->drv[drv_index]; | |
1942 | disk->driverfs_dev = &h->drv[drv_index]->dev; | |
6ae5ce8e MM |
1943 | |
1944 | /* Set up queue information */ | |
1945 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); | |
1946 | ||
1947 | /* This is a hardware imposed limit. */ | |
8a78362c | 1948 | blk_queue_max_segments(disk->queue, h->maxsgentries); |
6ae5ce8e | 1949 | |
086fa5ff | 1950 | blk_queue_max_hw_sectors(disk->queue, h->cciss_max_sectors); |
6ae5ce8e MM |
1951 | |
1952 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); | |
1953 | ||
1954 | disk->queue->queuedata = h; | |
1955 | ||
e1defc4f | 1956 | blk_queue_logical_block_size(disk->queue, |
9cef0d2f | 1957 | h->drv[drv_index]->block_size); |
6ae5ce8e MM |
1958 | |
1959 | /* Make sure all queue data is written out before */ | |
9cef0d2f | 1960 | /* setting h->drv[drv_index]->queue, as setting this */ |
6ae5ce8e MM |
1961 | /* allows the interrupt handler to start the queue */ |
1962 | wmb(); | |
9cef0d2f | 1963 | h->drv[drv_index]->queue = disk->queue; |
6ae5ce8e | 1964 | add_disk(disk); |
617e1344 SC |
1965 | return 0; |
1966 | ||
1967 | cleanup_queue: | |
1968 | blk_cleanup_queue(disk->queue); | |
1969 | disk->queue = NULL; | |
e8074f79 | 1970 | init_queue_failure: |
617e1344 | 1971 | return -1; |
6ae5ce8e MM |
1972 | } |
1973 | ||
ddd47442 | 1974 | /* This function will check the usage_count of the drive to be updated/added. |
a72da29b MM |
1975 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
1976 | * the drive's capacity, geometry, or serial number has changed, | |
1977 | * then the drive information will be updated and the disk will be | |
1978 | * re-registered with the kernel. If these conditions don't hold, | |
1979 | * then it will be left alone for the next reboot. The exception to this | |
1980 | * is disk 0 which will always be left registered with the kernel since it | |
1981 | * is also the controller node. Any changes to disk 0 will show up on | |
1982 | * the next reboot. | |
7c832835 | 1983 | */ |
f70dba83 SC |
1984 | static void cciss_update_drive_info(ctlr_info_t *h, int drv_index, |
1985 | int first_time, int via_ioctl) | |
7c832835 | 1986 | { |
ddd47442 | 1987 | struct gendisk *disk; |
ddd47442 MM |
1988 | InquiryData_struct *inq_buff = NULL; |
1989 | unsigned int block_size; | |
00988a35 | 1990 | sector_t total_size; |
ddd47442 MM |
1991 | unsigned long flags = 0; |
1992 | int ret = 0; | |
a72da29b MM |
1993 | drive_info_struct *drvinfo; |
1994 | ||
1995 | /* Get information about the disk and modify the driver structure */ | |
1996 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
9cef0d2f | 1997 | drvinfo = kzalloc(sizeof(*drvinfo), GFP_KERNEL); |
a72da29b MM |
1998 | if (inq_buff == NULL || drvinfo == NULL) |
1999 | goto mem_msg; | |
2000 | ||
2001 | /* testing to see if 16-byte CDBs are already being used */ | |
2002 | if (h->cciss_read == CCISS_READ_16) { | |
f70dba83 | 2003 | cciss_read_capacity_16(h, drv_index, |
a72da29b MM |
2004 | &total_size, &block_size); |
2005 | ||
2006 | } else { | |
f70dba83 | 2007 | cciss_read_capacity(h, drv_index, &total_size, &block_size); |
a72da29b MM |
2008 | /* if read_capacity returns all F's this volume is >2TB */ |
2009 | /* in size so we switch to 16-byte CDB's for all */ | |
2010 | /* read/write ops */ | |
2011 | if (total_size == 0xFFFFFFFFULL) { | |
f70dba83 | 2012 | cciss_read_capacity_16(h, drv_index, |
a72da29b MM |
2013 | &total_size, &block_size); |
2014 | h->cciss_read = CCISS_READ_16; | |
2015 | h->cciss_write = CCISS_WRITE_16; | |
2016 | } else { | |
2017 | h->cciss_read = CCISS_READ_10; | |
2018 | h->cciss_write = CCISS_WRITE_10; | |
2019 | } | |
2020 | } | |
2021 | ||
f70dba83 | 2022 | cciss_geometry_inquiry(h, drv_index, total_size, block_size, |
a72da29b MM |
2023 | inq_buff, drvinfo); |
2024 | drvinfo->block_size = block_size; | |
2025 | drvinfo->nr_blocks = total_size + 1; | |
2026 | ||
f70dba83 | 2027 | cciss_get_device_descr(h, drv_index, drvinfo->vendor, |
7fe06326 | 2028 | drvinfo->model, drvinfo->rev); |
f70dba83 | 2029 | cciss_get_serial_no(h, drv_index, drvinfo->serial_no, |
a72da29b | 2030 | sizeof(drvinfo->serial_no)); |
9cef0d2f SC |
2031 | /* Save the lunid in case we deregister the disk, below. */ |
2032 | memcpy(drvinfo->LunID, h->drv[drv_index]->LunID, | |
2033 | sizeof(drvinfo->LunID)); | |
a72da29b MM |
2034 | |
2035 | /* Is it the same disk we already know, and nothing's changed? */ | |
9cef0d2f | 2036 | if (h->drv[drv_index]->raid_level != -1 && |
a72da29b | 2037 | ((memcmp(drvinfo->serial_no, |
9cef0d2f SC |
2038 | h->drv[drv_index]->serial_no, 16) == 0) && |
2039 | drvinfo->block_size == h->drv[drv_index]->block_size && | |
2040 | drvinfo->nr_blocks == h->drv[drv_index]->nr_blocks && | |
2041 | drvinfo->heads == h->drv[drv_index]->heads && | |
2042 | drvinfo->sectors == h->drv[drv_index]->sectors && | |
2043 | drvinfo->cylinders == h->drv[drv_index]->cylinders)) | |
a72da29b MM |
2044 | /* The disk is unchanged, nothing to update */ |
2045 | goto freeret; | |
a72da29b | 2046 | |
6ae5ce8e MM |
2047 | /* If we get here it's not the same disk, or something's changed, |
2048 | * so we need to * deregister it, and re-register it, if it's not | |
2049 | * in use. | |
2050 | * If the disk already exists then deregister it before proceeding | |
2051 | * (unless it's the first disk (for the controller node). | |
2052 | */ | |
9cef0d2f | 2053 | if (h->drv[drv_index]->raid_level != -1 && drv_index != 0) { |
b2a4a43d | 2054 | dev_warn(&h->pdev->dev, "disk %d has changed.\n", drv_index); |
f70dba83 | 2055 | spin_lock_irqsave(&h->lock, flags); |
9cef0d2f | 2056 | h->drv[drv_index]->busy_configuring = 1; |
f70dba83 | 2057 | spin_unlock_irqrestore(&h->lock, flags); |
e14ac670 | 2058 | |
9cef0d2f | 2059 | /* deregister_disk sets h->drv[drv_index]->queue = NULL |
6ae5ce8e MM |
2060 | * which keeps the interrupt handler from starting |
2061 | * the queue. | |
2062 | */ | |
2d11d993 | 2063 | ret = deregister_disk(h, drv_index, 0, via_ioctl); |
ddd47442 MM |
2064 | } |
2065 | ||
2066 | /* If the disk is in use return */ | |
2067 | if (ret) | |
a72da29b MM |
2068 | goto freeret; |
2069 | ||
6ae5ce8e | 2070 | /* Save the new information from cciss_geometry_inquiry |
9cef0d2f SC |
2071 | * and serial number inquiry. If the disk was deregistered |
2072 | * above, then h->drv[drv_index] will be NULL. | |
6ae5ce8e | 2073 | */ |
9cef0d2f SC |
2074 | if (h->drv[drv_index] == NULL) { |
2075 | drvinfo->device_initialized = 0; | |
2076 | h->drv[drv_index] = drvinfo; | |
2077 | drvinfo = NULL; /* so it won't be freed below. */ | |
2078 | } else { | |
2079 | /* special case for cxd0 */ | |
2080 | h->drv[drv_index]->block_size = drvinfo->block_size; | |
2081 | h->drv[drv_index]->nr_blocks = drvinfo->nr_blocks; | |
2082 | h->drv[drv_index]->heads = drvinfo->heads; | |
2083 | h->drv[drv_index]->sectors = drvinfo->sectors; | |
2084 | h->drv[drv_index]->cylinders = drvinfo->cylinders; | |
2085 | h->drv[drv_index]->raid_level = drvinfo->raid_level; | |
2086 | memcpy(h->drv[drv_index]->serial_no, drvinfo->serial_no, 16); | |
2087 | memcpy(h->drv[drv_index]->vendor, drvinfo->vendor, | |
2088 | VENDOR_LEN + 1); | |
2089 | memcpy(h->drv[drv_index]->model, drvinfo->model, MODEL_LEN + 1); | |
2090 | memcpy(h->drv[drv_index]->rev, drvinfo->rev, REV_LEN + 1); | |
2091 | } | |
ddd47442 MM |
2092 | |
2093 | ++h->num_luns; | |
2094 | disk = h->gendisk[drv_index]; | |
9cef0d2f | 2095 | set_capacity(disk, h->drv[drv_index]->nr_blocks); |
ddd47442 | 2096 | |
6ae5ce8e MM |
2097 | /* If it's not disk 0 (drv_index != 0) |
2098 | * or if it was disk 0, but there was previously | |
2099 | * no actual corresponding configured logical drive | |
2100 | * (raid_leve == -1) then we want to update the | |
2101 | * logical drive's information. | |
2102 | */ | |
361e9b07 SC |
2103 | if (drv_index || first_time) { |
2104 | if (cciss_add_disk(h, disk, drv_index) != 0) { | |
2105 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 2106 | cciss_free_drive_info(h, drv_index); |
b2a4a43d SC |
2107 | dev_warn(&h->pdev->dev, "could not update disk %d\n", |
2108 | drv_index); | |
361e9b07 SC |
2109 | --h->num_luns; |
2110 | } | |
2111 | } | |
ddd47442 | 2112 | |
6ae5ce8e | 2113 | freeret: |
ddd47442 | 2114 | kfree(inq_buff); |
a72da29b | 2115 | kfree(drvinfo); |
ddd47442 | 2116 | return; |
6ae5ce8e | 2117 | mem_msg: |
b2a4a43d | 2118 | dev_err(&h->pdev->dev, "out of memory\n"); |
ddd47442 MM |
2119 | goto freeret; |
2120 | } | |
2121 | ||
2122 | /* This function will find the first index of the controllers drive array | |
9cef0d2f SC |
2123 | * that has a null drv pointer and allocate the drive info struct and |
2124 | * will return that index This is where new drives will be added. | |
2125 | * If the index to be returned is greater than the highest_lun index for | |
2126 | * the controller then highest_lun is set * to this new index. | |
2127 | * If there are no available indexes or if tha allocation fails, then -1 | |
2128 | * is returned. * "controller_node" is used to know if this is a real | |
2129 | * logical drive, or just the controller node, which determines if this | |
2130 | * counts towards highest_lun. | |
7c832835 | 2131 | */ |
9cef0d2f | 2132 | static int cciss_alloc_drive_info(ctlr_info_t *h, int controller_node) |
ddd47442 MM |
2133 | { |
2134 | int i; | |
9cef0d2f | 2135 | drive_info_struct *drv; |
ddd47442 | 2136 | |
9cef0d2f | 2137 | /* Search for an empty slot for our drive info */ |
7c832835 | 2138 | for (i = 0; i < CISS_MAX_LUN; i++) { |
9cef0d2f SC |
2139 | |
2140 | /* if not cxd0 case, and it's occupied, skip it. */ | |
2141 | if (h->drv[i] && i != 0) | |
2142 | continue; | |
2143 | /* | |
2144 | * If it's cxd0 case, and drv is alloc'ed already, and a | |
2145 | * disk is configured there, skip it. | |
2146 | */ | |
2147 | if (i == 0 && h->drv[i] && h->drv[i]->raid_level != -1) | |
2148 | continue; | |
2149 | ||
2150 | /* | |
2151 | * We've found an empty slot. Update highest_lun | |
2152 | * provided this isn't just the fake cxd0 controller node. | |
2153 | */ | |
2154 | if (i > h->highest_lun && !controller_node) | |
2155 | h->highest_lun = i; | |
2156 | ||
2157 | /* If adding a real disk at cxd0, and it's already alloc'ed */ | |
2158 | if (i == 0 && h->drv[i] != NULL) | |
ddd47442 | 2159 | return i; |
9cef0d2f SC |
2160 | |
2161 | /* | |
2162 | * Found an empty slot, not already alloc'ed. Allocate it. | |
2163 | * Mark it with raid_level == -1, so we know it's new later on. | |
2164 | */ | |
2165 | drv = kzalloc(sizeof(*drv), GFP_KERNEL); | |
2166 | if (!drv) | |
2167 | return -1; | |
2168 | drv->raid_level = -1; /* so we know it's new */ | |
2169 | h->drv[i] = drv; | |
2170 | return i; | |
ddd47442 MM |
2171 | } |
2172 | return -1; | |
2173 | } | |
2174 | ||
9cef0d2f SC |
2175 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index) |
2176 | { | |
2177 | kfree(h->drv[drv_index]); | |
2178 | h->drv[drv_index] = NULL; | |
2179 | } | |
2180 | ||
361e9b07 SC |
2181 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index) |
2182 | { | |
2183 | put_disk(h->gendisk[drv_index]); | |
2184 | h->gendisk[drv_index] = NULL; | |
2185 | } | |
2186 | ||
6ae5ce8e MM |
2187 | /* cciss_add_gendisk finds a free hba[]->drv structure |
2188 | * and allocates a gendisk if needed, and sets the lunid | |
2189 | * in the drvinfo structure. It returns the index into | |
2190 | * the ->drv[] array, or -1 if none are free. | |
2191 | * is_controller_node indicates whether highest_lun should | |
2192 | * count this disk, or if it's only being added to provide | |
2193 | * a means to talk to the controller in case no logical | |
2194 | * drives have yet been configured. | |
2195 | */ | |
39ccf9a6 SC |
2196 | static int cciss_add_gendisk(ctlr_info_t *h, unsigned char lunid[], |
2197 | int controller_node) | |
6ae5ce8e MM |
2198 | { |
2199 | int drv_index; | |
2200 | ||
9cef0d2f | 2201 | drv_index = cciss_alloc_drive_info(h, controller_node); |
6ae5ce8e MM |
2202 | if (drv_index == -1) |
2203 | return -1; | |
8ce51966 | 2204 | |
6ae5ce8e MM |
2205 | /*Check if the gendisk needs to be allocated */ |
2206 | if (!h->gendisk[drv_index]) { | |
2207 | h->gendisk[drv_index] = | |
2208 | alloc_disk(1 << NWD_SHIFT); | |
2209 | if (!h->gendisk[drv_index]) { | |
b2a4a43d SC |
2210 | dev_err(&h->pdev->dev, |
2211 | "could not allocate a new disk %d\n", | |
2212 | drv_index); | |
9cef0d2f | 2213 | goto err_free_drive_info; |
6ae5ce8e MM |
2214 | } |
2215 | } | |
9cef0d2f SC |
2216 | memcpy(h->drv[drv_index]->LunID, lunid, |
2217 | sizeof(h->drv[drv_index]->LunID)); | |
2218 | if (cciss_create_ld_sysfs_entry(h, drv_index)) | |
7fe06326 | 2219 | goto err_free_disk; |
6ae5ce8e MM |
2220 | /* Don't need to mark this busy because nobody */ |
2221 | /* else knows about this disk yet to contend */ | |
2222 | /* for access to it. */ | |
9cef0d2f | 2223 | h->drv[drv_index]->busy_configuring = 0; |
6ae5ce8e MM |
2224 | wmb(); |
2225 | return drv_index; | |
7fe06326 AP |
2226 | |
2227 | err_free_disk: | |
361e9b07 | 2228 | cciss_free_gendisk(h, drv_index); |
9cef0d2f SC |
2229 | err_free_drive_info: |
2230 | cciss_free_drive_info(h, drv_index); | |
7fe06326 | 2231 | return -1; |
6ae5ce8e MM |
2232 | } |
2233 | ||
2234 | /* This is for the special case of a controller which | |
2235 | * has no logical drives. In this case, we still need | |
2236 | * to register a disk so the controller can be accessed | |
2237 | * by the Array Config Utility. | |
2238 | */ | |
2239 | static void cciss_add_controller_node(ctlr_info_t *h) | |
2240 | { | |
2241 | struct gendisk *disk; | |
2242 | int drv_index; | |
2243 | ||
2244 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ | |
2245 | return; | |
2246 | ||
39ccf9a6 | 2247 | drv_index = cciss_add_gendisk(h, CTLR_LUNID, 1); |
361e9b07 SC |
2248 | if (drv_index == -1) |
2249 | goto error; | |
9cef0d2f SC |
2250 | h->drv[drv_index]->block_size = 512; |
2251 | h->drv[drv_index]->nr_blocks = 0; | |
2252 | h->drv[drv_index]->heads = 0; | |
2253 | h->drv[drv_index]->sectors = 0; | |
2254 | h->drv[drv_index]->cylinders = 0; | |
2255 | h->drv[drv_index]->raid_level = -1; | |
2256 | memset(h->drv[drv_index]->serial_no, 0, 16); | |
6ae5ce8e | 2257 | disk = h->gendisk[drv_index]; |
361e9b07 SC |
2258 | if (cciss_add_disk(h, disk, drv_index) == 0) |
2259 | return; | |
2260 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 2261 | cciss_free_drive_info(h, drv_index); |
361e9b07 | 2262 | error: |
b2a4a43d | 2263 | dev_warn(&h->pdev->dev, "could not add disk 0.\n"); |
361e9b07 | 2264 | return; |
6ae5ce8e MM |
2265 | } |
2266 | ||
ddd47442 | 2267 | /* This function will add and remove logical drives from the Logical |
d14c4ab5 | 2268 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
2269 | * so that mount points are preserved until the next reboot. This allows |
2270 | * for the removal of logical drives in the middle of the drive array | |
2271 | * without a re-ordering of those drives. | |
2272 | * INPUT | |
2273 | * h = The controller to perform the operations on | |
7c832835 | 2274 | */ |
2d11d993 SC |
2275 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, |
2276 | int via_ioctl) | |
1da177e4 | 2277 | { |
ddd47442 MM |
2278 | int num_luns; |
2279 | ReportLunData_struct *ld_buff = NULL; | |
ddd47442 MM |
2280 | int return_code; |
2281 | int listlength = 0; | |
2282 | int i; | |
2283 | int drv_found; | |
2284 | int drv_index = 0; | |
39ccf9a6 | 2285 | unsigned char lunid[8] = CTLR_LUNID; |
1da177e4 | 2286 | unsigned long flags; |
ddd47442 | 2287 | |
6ae5ce8e MM |
2288 | if (!capable(CAP_SYS_RAWIO)) |
2289 | return -EPERM; | |
2290 | ||
ddd47442 | 2291 | /* Set busy_configuring flag for this operation */ |
f70dba83 | 2292 | spin_lock_irqsave(&h->lock, flags); |
7c832835 | 2293 | if (h->busy_configuring) { |
f70dba83 | 2294 | spin_unlock_irqrestore(&h->lock, flags); |
ddd47442 MM |
2295 | return -EBUSY; |
2296 | } | |
2297 | h->busy_configuring = 1; | |
f70dba83 | 2298 | spin_unlock_irqrestore(&h->lock, flags); |
ddd47442 | 2299 | |
a72da29b MM |
2300 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
2301 | if (ld_buff == NULL) | |
2302 | goto mem_msg; | |
2303 | ||
f70dba83 | 2304 | return_code = sendcmd_withirq(h, CISS_REPORT_LOG, ld_buff, |
b57695fe | 2305 | sizeof(ReportLunData_struct), |
2306 | 0, CTLR_LUNID, TYPE_CMD); | |
ddd47442 | 2307 | |
a72da29b MM |
2308 | if (return_code == IO_OK) |
2309 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); | |
2310 | else { /* reading number of logical volumes failed */ | |
b2a4a43d SC |
2311 | dev_warn(&h->pdev->dev, |
2312 | "report logical volume command failed\n"); | |
a72da29b MM |
2313 | listlength = 0; |
2314 | goto freeret; | |
2315 | } | |
2316 | ||
2317 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
2318 | if (num_luns > CISS_MAX_LUN) { | |
2319 | num_luns = CISS_MAX_LUN; | |
b2a4a43d | 2320 | dev_warn(&h->pdev->dev, "more luns configured" |
a72da29b MM |
2321 | " on controller than can be handled by" |
2322 | " this driver.\n"); | |
2323 | } | |
2324 | ||
6ae5ce8e MM |
2325 | if (num_luns == 0) |
2326 | cciss_add_controller_node(h); | |
2327 | ||
2328 | /* Compare controller drive array to driver's drive array | |
2329 | * to see if any drives are missing on the controller due | |
2330 | * to action of Array Config Utility (user deletes drive) | |
2331 | * and deregister logical drives which have disappeared. | |
2332 | */ | |
a72da29b MM |
2333 | for (i = 0; i <= h->highest_lun; i++) { |
2334 | int j; | |
2335 | drv_found = 0; | |
d8a0be6a SC |
2336 | |
2337 | /* skip holes in the array from already deleted drives */ | |
9cef0d2f | 2338 | if (h->drv[i] == NULL) |
d8a0be6a SC |
2339 | continue; |
2340 | ||
a72da29b | 2341 | for (j = 0; j < num_luns; j++) { |
39ccf9a6 | 2342 | memcpy(lunid, &ld_buff->LUN[j][0], sizeof(lunid)); |
9cef0d2f | 2343 | if (memcmp(h->drv[i]->LunID, lunid, |
39ccf9a6 | 2344 | sizeof(lunid)) == 0) { |
a72da29b MM |
2345 | drv_found = 1; |
2346 | break; | |
2347 | } | |
2348 | } | |
2349 | if (!drv_found) { | |
2350 | /* Deregister it from the OS, it's gone. */ | |
f70dba83 | 2351 | spin_lock_irqsave(&h->lock, flags); |
9cef0d2f | 2352 | h->drv[i]->busy_configuring = 1; |
f70dba83 | 2353 | spin_unlock_irqrestore(&h->lock, flags); |
2d11d993 | 2354 | return_code = deregister_disk(h, i, 1, via_ioctl); |
9cef0d2f SC |
2355 | if (h->drv[i] != NULL) |
2356 | h->drv[i]->busy_configuring = 0; | |
ddd47442 | 2357 | } |
a72da29b | 2358 | } |
ddd47442 | 2359 | |
a72da29b MM |
2360 | /* Compare controller drive array to driver's drive array. |
2361 | * Check for updates in the drive information and any new drives | |
2362 | * on the controller due to ACU adding logical drives, or changing | |
2363 | * a logical drive's size, etc. Reregister any new/changed drives | |
2364 | */ | |
2365 | for (i = 0; i < num_luns; i++) { | |
2366 | int j; | |
ddd47442 | 2367 | |
a72da29b | 2368 | drv_found = 0; |
ddd47442 | 2369 | |
39ccf9a6 | 2370 | memcpy(lunid, &ld_buff->LUN[i][0], sizeof(lunid)); |
a72da29b MM |
2371 | /* Find if the LUN is already in the drive array |
2372 | * of the driver. If so then update its info | |
2373 | * if not in use. If it does not exist then find | |
2374 | * the first free index and add it. | |
2375 | */ | |
2376 | for (j = 0; j <= h->highest_lun; j++) { | |
9cef0d2f SC |
2377 | if (h->drv[j] != NULL && |
2378 | memcmp(h->drv[j]->LunID, lunid, | |
2379 | sizeof(h->drv[j]->LunID)) == 0) { | |
a72da29b MM |
2380 | drv_index = j; |
2381 | drv_found = 1; | |
2382 | break; | |
ddd47442 | 2383 | } |
a72da29b | 2384 | } |
ddd47442 | 2385 | |
a72da29b MM |
2386 | /* check if the drive was found already in the array */ |
2387 | if (!drv_found) { | |
eece695f | 2388 | drv_index = cciss_add_gendisk(h, lunid, 0); |
a72da29b MM |
2389 | if (drv_index == -1) |
2390 | goto freeret; | |
a72da29b | 2391 | } |
f70dba83 | 2392 | cciss_update_drive_info(h, drv_index, first_time, via_ioctl); |
a72da29b | 2393 | } /* end for */ |
ddd47442 | 2394 | |
6ae5ce8e | 2395 | freeret: |
ddd47442 MM |
2396 | kfree(ld_buff); |
2397 | h->busy_configuring = 0; | |
2398 | /* We return -1 here to tell the ACU that we have registered/updated | |
2399 | * all of the drives that we can and to keep it from calling us | |
2400 | * additional times. | |
7c832835 | 2401 | */ |
ddd47442 | 2402 | return -1; |
6ae5ce8e | 2403 | mem_msg: |
b2a4a43d | 2404 | dev_err(&h->pdev->dev, "out of memory\n"); |
a72da29b | 2405 | h->busy_configuring = 0; |
ddd47442 MM |
2406 | goto freeret; |
2407 | } | |
2408 | ||
9ddb27b4 SC |
2409 | static void cciss_clear_drive_info(drive_info_struct *drive_info) |
2410 | { | |
2411 | /* zero out the disk size info */ | |
2412 | drive_info->nr_blocks = 0; | |
2413 | drive_info->block_size = 0; | |
2414 | drive_info->heads = 0; | |
2415 | drive_info->sectors = 0; | |
2416 | drive_info->cylinders = 0; | |
2417 | drive_info->raid_level = -1; | |
2418 | memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no)); | |
2419 | memset(drive_info->model, 0, sizeof(drive_info->model)); | |
2420 | memset(drive_info->rev, 0, sizeof(drive_info->rev)); | |
2421 | memset(drive_info->vendor, 0, sizeof(drive_info->vendor)); | |
2422 | /* | |
2423 | * don't clear the LUNID though, we need to remember which | |
2424 | * one this one is. | |
2425 | */ | |
2426 | } | |
2427 | ||
ddd47442 MM |
2428 | /* This function will deregister the disk and it's queue from the |
2429 | * kernel. It must be called with the controller lock held and the | |
2430 | * drv structures busy_configuring flag set. It's parameters are: | |
2431 | * | |
2432 | * disk = This is the disk to be deregistered | |
2433 | * drv = This is the drive_info_struct associated with the disk to be | |
2434 | * deregistered. It contains information about the disk used | |
2435 | * by the driver. | |
2436 | * clear_all = This flag determines whether or not the disk information | |
2437 | * is going to be completely cleared out and the highest_lun | |
2438 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 2439 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
2440 | * the highest_lun should be left unchanged and the LunID |
2441 | * should not be cleared. | |
2d11d993 SC |
2442 | * via_ioctl |
2443 | * This indicates whether we've reached this path via ioctl. | |
2444 | * This affects the maximum usage count allowed for c0d0 to be messed with. | |
2445 | * If this path is reached via ioctl(), then the max_usage_count will | |
2446 | * be 1, as the process calling ioctl() has got to have the device open. | |
2447 | * If we get here via sysfs, then the max usage count will be zero. | |
ddd47442 | 2448 | */ |
a0ea8622 | 2449 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
2d11d993 | 2450 | int clear_all, int via_ioctl) |
ddd47442 | 2451 | { |
799202cb | 2452 | int i; |
a0ea8622 SC |
2453 | struct gendisk *disk; |
2454 | drive_info_struct *drv; | |
9cef0d2f | 2455 | int recalculate_highest_lun; |
1da177e4 LT |
2456 | |
2457 | if (!capable(CAP_SYS_RAWIO)) | |
2458 | return -EPERM; | |
2459 | ||
9cef0d2f | 2460 | drv = h->drv[drv_index]; |
a0ea8622 SC |
2461 | disk = h->gendisk[drv_index]; |
2462 | ||
1da177e4 | 2463 | /* make sure logical volume is NOT is use */ |
7c832835 | 2464 | if (clear_all || (h->gendisk[0] == disk)) { |
2d11d993 | 2465 | if (drv->usage_count > via_ioctl) |
7c832835 BH |
2466 | return -EBUSY; |
2467 | } else if (drv->usage_count > 0) | |
2468 | return -EBUSY; | |
1da177e4 | 2469 | |
9cef0d2f SC |
2470 | recalculate_highest_lun = (drv == h->drv[h->highest_lun]); |
2471 | ||
ddd47442 MM |
2472 | /* invalidate the devices and deregister the disk. If it is disk |
2473 | * zero do not deregister it but just zero out it's values. This | |
2474 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
2475 | */ |
2476 | if (h->gendisk[0] != disk) { | |
5a9df732 | 2477 | struct request_queue *q = disk->queue; |
097d0264 | 2478 | if (disk->flags & GENHD_FL_UP) { |
8ce51966 | 2479 | cciss_destroy_ld_sysfs_entry(h, drv_index, 0); |
5a9df732 | 2480 | del_gendisk(disk); |
5a9df732 | 2481 | } |
9cef0d2f | 2482 | if (q) |
5a9df732 | 2483 | blk_cleanup_queue(q); |
5a9df732 AB |
2484 | /* If clear_all is set then we are deleting the logical |
2485 | * drive, not just refreshing its info. For drives | |
2486 | * other than disk 0 we will call put_disk. We do not | |
2487 | * do this for disk 0 as we need it to be able to | |
2488 | * configure the controller. | |
a72da29b | 2489 | */ |
5a9df732 AB |
2490 | if (clear_all){ |
2491 | /* This isn't pretty, but we need to find the | |
2492 | * disk in our array and NULL our the pointer. | |
2493 | * This is so that we will call alloc_disk if | |
2494 | * this index is used again later. | |
a72da29b | 2495 | */ |
5a9df732 | 2496 | for (i=0; i < CISS_MAX_LUN; i++){ |
a72da29b | 2497 | if (h->gendisk[i] == disk) { |
5a9df732 AB |
2498 | h->gendisk[i] = NULL; |
2499 | break; | |
799202cb | 2500 | } |
799202cb | 2501 | } |
5a9df732 | 2502 | put_disk(disk); |
ddd47442 | 2503 | } |
799202cb MM |
2504 | } else { |
2505 | set_capacity(disk, 0); | |
9cef0d2f | 2506 | cciss_clear_drive_info(drv); |
ddd47442 MM |
2507 | } |
2508 | ||
2509 | --h->num_luns; | |
ddd47442 | 2510 | |
9cef0d2f SC |
2511 | /* if it was the last disk, find the new hightest lun */ |
2512 | if (clear_all && recalculate_highest_lun) { | |
c2d45b4d | 2513 | int newhighest = -1; |
9cef0d2f SC |
2514 | for (i = 0; i <= h->highest_lun; i++) { |
2515 | /* if the disk has size > 0, it is available */ | |
2516 | if (h->drv[i] && h->drv[i]->heads) | |
2517 | newhighest = i; | |
1da177e4 | 2518 | } |
9cef0d2f | 2519 | h->highest_lun = newhighest; |
ddd47442 | 2520 | } |
e2019b58 | 2521 | return 0; |
1da177e4 | 2522 | } |
ddd47442 | 2523 | |
f70dba83 | 2524 | static int fill_cmd(ctlr_info_t *h, CommandList_struct *c, __u8 cmd, void *buff, |
b57695fe | 2525 | size_t size, __u8 page_code, unsigned char *scsi3addr, |
2526 | int cmd_type) | |
1da177e4 | 2527 | { |
1da177e4 LT |
2528 | u64bit buff_dma_handle; |
2529 | int status = IO_OK; | |
2530 | ||
2531 | c->cmd_type = CMD_IOCTL_PEND; | |
2532 | c->Header.ReplyQueue = 0; | |
7c832835 | 2533 | if (buff != NULL) { |
1da177e4 | 2534 | c->Header.SGList = 1; |
7c832835 | 2535 | c->Header.SGTotal = 1; |
1da177e4 LT |
2536 | } else { |
2537 | c->Header.SGList = 0; | |
7c832835 | 2538 | c->Header.SGTotal = 0; |
1da177e4 LT |
2539 | } |
2540 | c->Header.Tag.lower = c->busaddr; | |
b57695fe | 2541 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
1da177e4 LT |
2542 | |
2543 | c->Request.Type.Type = cmd_type; | |
2544 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
2545 | switch (cmd) { |
2546 | case CISS_INQUIRY: | |
1da177e4 | 2547 | /* are we trying to read a vital product page */ |
7c832835 | 2548 | if (page_code != 0) { |
1da177e4 LT |
2549 | c->Request.CDB[1] = 0x01; |
2550 | c->Request.CDB[2] = page_code; | |
2551 | } | |
2552 | c->Request.CDBLen = 6; | |
7c832835 | 2553 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
2554 | c->Request.Type.Direction = XFER_READ; |
2555 | c->Request.Timeout = 0; | |
7c832835 BH |
2556 | c->Request.CDB[0] = CISS_INQUIRY; |
2557 | c->Request.CDB[4] = size & 0xFF; | |
2558 | break; | |
1da177e4 LT |
2559 | case CISS_REPORT_LOG: |
2560 | case CISS_REPORT_PHYS: | |
7c832835 | 2561 | /* Talking to controller so It's a physical command |
1da177e4 | 2562 | mode = 00 target = 0. Nothing to write. |
7c832835 | 2563 | */ |
1da177e4 LT |
2564 | c->Request.CDBLen = 12; |
2565 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2566 | c->Request.Type.Direction = XFER_READ; | |
2567 | c->Request.Timeout = 0; | |
2568 | c->Request.CDB[0] = cmd; | |
b028461d | 2569 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ |
1da177e4 LT |
2570 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
2571 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
2572 | c->Request.CDB[9] = size & 0xFF; | |
2573 | break; | |
2574 | ||
2575 | case CCISS_READ_CAPACITY: | |
1da177e4 LT |
2576 | c->Request.CDBLen = 10; |
2577 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2578 | c->Request.Type.Direction = XFER_READ; | |
2579 | c->Request.Timeout = 0; | |
2580 | c->Request.CDB[0] = cmd; | |
7c832835 | 2581 | break; |
00988a35 | 2582 | case CCISS_READ_CAPACITY_16: |
00988a35 MMOD |
2583 | c->Request.CDBLen = 16; |
2584 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2585 | c->Request.Type.Direction = XFER_READ; | |
2586 | c->Request.Timeout = 0; | |
2587 | c->Request.CDB[0] = cmd; | |
2588 | c->Request.CDB[1] = 0x10; | |
2589 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
2590 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
2591 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
2592 | c->Request.CDB[13] = size & 0xFF; | |
2593 | c->Request.Timeout = 0; | |
2594 | c->Request.CDB[0] = cmd; | |
2595 | break; | |
1da177e4 LT |
2596 | case CCISS_CACHE_FLUSH: |
2597 | c->Request.CDBLen = 12; | |
2598 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2599 | c->Request.Type.Direction = XFER_WRITE; | |
2600 | c->Request.Timeout = 0; | |
2601 | c->Request.CDB[0] = BMIC_WRITE; | |
2602 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
59bd71a8 SC |
2603 | c->Request.CDB[7] = (size >> 8) & 0xFF; |
2604 | c->Request.CDB[8] = size & 0xFF; | |
7c832835 | 2605 | break; |
88f627ae | 2606 | case TEST_UNIT_READY: |
88f627ae SC |
2607 | c->Request.CDBLen = 6; |
2608 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2609 | c->Request.Type.Direction = XFER_NONE; | |
2610 | c->Request.Timeout = 0; | |
2611 | break; | |
1da177e4 | 2612 | default: |
b2a4a43d | 2613 | dev_warn(&h->pdev->dev, "Unknown Command 0x%c\n", cmd); |
e2019b58 | 2614 | return IO_ERROR; |
1da177e4 LT |
2615 | } |
2616 | } else if (cmd_type == TYPE_MSG) { | |
2617 | switch (cmd) { | |
8f71bb82 | 2618 | case CCISS_ABORT_MSG: |
3da8b713 | 2619 | c->Request.CDBLen = 12; |
2620 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2621 | c->Request.Type.Direction = XFER_WRITE; | |
2622 | c->Request.Timeout = 0; | |
7c832835 BH |
2623 | c->Request.CDB[0] = cmd; /* abort */ |
2624 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 2625 | /* buff contains the tag of the command to abort */ |
2626 | memcpy(&c->Request.CDB[4], buff, 8); | |
2627 | break; | |
8f71bb82 | 2628 | case CCISS_RESET_MSG: |
88f627ae | 2629 | c->Request.CDBLen = 16; |
3da8b713 | 2630 | c->Request.Type.Attribute = ATTR_SIMPLE; |
88f627ae | 2631 | c->Request.Type.Direction = XFER_NONE; |
3da8b713 | 2632 | c->Request.Timeout = 0; |
2633 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 | 2634 | c->Request.CDB[0] = cmd; /* reset */ |
8f71bb82 | 2635 | c->Request.CDB[1] = CCISS_RESET_TYPE_TARGET; |
00988a35 | 2636 | break; |
8f71bb82 | 2637 | case CCISS_NOOP_MSG: |
1da177e4 LT |
2638 | c->Request.CDBLen = 1; |
2639 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2640 | c->Request.Type.Direction = XFER_WRITE; | |
2641 | c->Request.Timeout = 0; | |
2642 | c->Request.CDB[0] = cmd; | |
2643 | break; | |
2644 | default: | |
b2a4a43d SC |
2645 | dev_warn(&h->pdev->dev, |
2646 | "unknown message type %d\n", cmd); | |
1da177e4 LT |
2647 | return IO_ERROR; |
2648 | } | |
2649 | } else { | |
b2a4a43d | 2650 | dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); |
1da177e4 LT |
2651 | return IO_ERROR; |
2652 | } | |
2653 | /* Fill in the scatter gather information */ | |
2654 | if (size > 0) { | |
2655 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
2656 | buff, size, |
2657 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
2658 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
2659 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
2660 | c->SG[0].Len = size; | |
7c832835 | 2661 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
2662 | } |
2663 | return status; | |
2664 | } | |
7c832835 | 2665 | |
edc83d47 JA |
2666 | static int __devinit cciss_send_reset(ctlr_info_t *h, unsigned char *scsi3addr, |
2667 | u8 reset_type) | |
2668 | { | |
2669 | CommandList_struct *c; | |
2670 | int return_status; | |
2671 | ||
2672 | c = cmd_alloc(h); | |
2673 | if (!c) | |
2674 | return -ENOMEM; | |
2675 | return_status = fill_cmd(h, c, CCISS_RESET_MSG, NULL, 0, 0, | |
2676 | CTLR_LUNID, TYPE_MSG); | |
2677 | c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */ | |
2678 | if (return_status != IO_OK) { | |
2679 | cmd_special_free(h, c); | |
2680 | return return_status; | |
2681 | } | |
2682 | c->waiting = NULL; | |
2683 | enqueue_cmd_and_start_io(h, c); | |
2684 | /* Don't wait for completion, the reset won't complete. Don't free | |
2685 | * the command either. This is the last command we will send before | |
2686 | * re-initializing everything, so it doesn't matter and won't leak. | |
2687 | */ | |
2688 | return 0; | |
2689 | } | |
2690 | ||
3c2ab402 | 2691 | static int check_target_status(ctlr_info_t *h, CommandList_struct *c) |
2692 | { | |
2693 | switch (c->err_info->ScsiStatus) { | |
2694 | case SAM_STAT_GOOD: | |
2695 | return IO_OK; | |
2696 | case SAM_STAT_CHECK_CONDITION: | |
2697 | switch (0xf & c->err_info->SenseInfo[2]) { | |
2698 | case 0: return IO_OK; /* no sense */ | |
2699 | case 1: return IO_OK; /* recovered error */ | |
2700 | default: | |
c08fac65 SC |
2701 | if (check_for_unit_attention(h, c)) |
2702 | return IO_NEEDS_RETRY; | |
b2a4a43d | 2703 | dev_warn(&h->pdev->dev, "cmd 0x%02x " |
3c2ab402 | 2704 | "check condition, sense key = 0x%02x\n", |
b2a4a43d | 2705 | c->Request.CDB[0], c->err_info->SenseInfo[2]); |
3c2ab402 | 2706 | } |
2707 | break; | |
2708 | default: | |
b2a4a43d SC |
2709 | dev_warn(&h->pdev->dev, "cmd 0x%02x" |
2710 | "scsi status = 0x%02x\n", | |
3c2ab402 | 2711 | c->Request.CDB[0], c->err_info->ScsiStatus); |
2712 | break; | |
2713 | } | |
2714 | return IO_ERROR; | |
2715 | } | |
2716 | ||
789a424a | 2717 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 | 2718 | { |
5390cfc3 | 2719 | int return_status = IO_OK; |
7c832835 | 2720 | |
789a424a | 2721 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
2722 | return IO_OK; | |
5390cfc3 | 2723 | |
2724 | switch (c->err_info->CommandStatus) { | |
2725 | case CMD_TARGET_STATUS: | |
3c2ab402 | 2726 | return_status = check_target_status(h, c); |
5390cfc3 | 2727 | break; |
2728 | case CMD_DATA_UNDERRUN: | |
2729 | case CMD_DATA_OVERRUN: | |
2730 | /* expected for inquiry and report lun commands */ | |
2731 | break; | |
2732 | case CMD_INVALID: | |
b2a4a43d | 2733 | dev_warn(&h->pdev->dev, "cmd 0x%02x is " |
5390cfc3 | 2734 | "reported invalid\n", c->Request.CDB[0]); |
2735 | return_status = IO_ERROR; | |
2736 | break; | |
2737 | case CMD_PROTOCOL_ERR: | |
b2a4a43d SC |
2738 | dev_warn(&h->pdev->dev, "cmd 0x%02x has " |
2739 | "protocol error\n", c->Request.CDB[0]); | |
5390cfc3 | 2740 | return_status = IO_ERROR; |
2741 | break; | |
2742 | case CMD_HARDWARE_ERR: | |
b2a4a43d | 2743 | dev_warn(&h->pdev->dev, "cmd 0x%02x had " |
5390cfc3 | 2744 | " hardware error\n", c->Request.CDB[0]); |
2745 | return_status = IO_ERROR; | |
2746 | break; | |
2747 | case CMD_CONNECTION_LOST: | |
b2a4a43d | 2748 | dev_warn(&h->pdev->dev, "cmd 0x%02x had " |
5390cfc3 | 2749 | "connection lost\n", c->Request.CDB[0]); |
2750 | return_status = IO_ERROR; | |
2751 | break; | |
2752 | case CMD_ABORTED: | |
b2a4a43d | 2753 | dev_warn(&h->pdev->dev, "cmd 0x%02x was " |
5390cfc3 | 2754 | "aborted\n", c->Request.CDB[0]); |
2755 | return_status = IO_ERROR; | |
2756 | break; | |
2757 | case CMD_ABORT_FAILED: | |
b2a4a43d | 2758 | dev_warn(&h->pdev->dev, "cmd 0x%02x reports " |
5390cfc3 | 2759 | "abort failed\n", c->Request.CDB[0]); |
2760 | return_status = IO_ERROR; | |
2761 | break; | |
2762 | case CMD_UNSOLICITED_ABORT: | |
b2a4a43d | 2763 | dev_warn(&h->pdev->dev, "unsolicited abort 0x%02x\n", |
5390cfc3 | 2764 | c->Request.CDB[0]); |
789a424a | 2765 | return_status = IO_NEEDS_RETRY; |
5390cfc3 | 2766 | break; |
6d9a4f9e SC |
2767 | case CMD_UNABORTABLE: |
2768 | dev_warn(&h->pdev->dev, "cmd unabortable\n"); | |
2769 | return_status = IO_ERROR; | |
2770 | break; | |
5390cfc3 | 2771 | default: |
b2a4a43d | 2772 | dev_warn(&h->pdev->dev, "cmd 0x%02x returned " |
5390cfc3 | 2773 | "unknown status %x\n", c->Request.CDB[0], |
2774 | c->err_info->CommandStatus); | |
2775 | return_status = IO_ERROR; | |
7c832835 | 2776 | } |
789a424a | 2777 | return return_status; |
2778 | } | |
2779 | ||
2780 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, | |
2781 | int attempt_retry) | |
2782 | { | |
2783 | DECLARE_COMPLETION_ONSTACK(wait); | |
2784 | u64bit buff_dma_handle; | |
789a424a | 2785 | int return_status = IO_OK; |
2786 | ||
2787 | resend_cmd2: | |
2788 | c->waiting = &wait; | |
664a717d | 2789 | enqueue_cmd_and_start_io(h, c); |
789a424a | 2790 | |
2791 | wait_for_completion(&wait); | |
2792 | ||
2793 | if (c->err_info->CommandStatus == 0 || !attempt_retry) | |
2794 | goto command_done; | |
2795 | ||
2796 | return_status = process_sendcmd_error(h, c); | |
2797 | ||
2798 | if (return_status == IO_NEEDS_RETRY && | |
2799 | c->retry_count < MAX_CMD_RETRIES) { | |
b2a4a43d | 2800 | dev_warn(&h->pdev->dev, "retrying 0x%02x\n", |
789a424a | 2801 | c->Request.CDB[0]); |
2802 | c->retry_count++; | |
2803 | /* erase the old error information */ | |
2804 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2805 | return_status = IO_OK; | |
2806 | INIT_COMPLETION(wait); | |
2807 | goto resend_cmd2; | |
2808 | } | |
5390cfc3 | 2809 | |
2810 | command_done: | |
1da177e4 | 2811 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
2812 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2813 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
2814 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
2815 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
5390cfc3 | 2816 | return return_status; |
2817 | } | |
2818 | ||
f70dba83 | 2819 | static int sendcmd_withirq(ctlr_info_t *h, __u8 cmd, void *buff, size_t size, |
b57695fe | 2820 | __u8 page_code, unsigned char scsi3addr[], |
2821 | int cmd_type) | |
5390cfc3 | 2822 | { |
5390cfc3 | 2823 | CommandList_struct *c; |
2824 | int return_status; | |
2825 | ||
6b4d96b8 | 2826 | c = cmd_special_alloc(h); |
5390cfc3 | 2827 | if (!c) |
2828 | return -ENOMEM; | |
f70dba83 | 2829 | return_status = fill_cmd(h, c, cmd, buff, size, page_code, |
b57695fe | 2830 | scsi3addr, cmd_type); |
5390cfc3 | 2831 | if (return_status == IO_OK) |
789a424a | 2832 | return_status = sendcmd_withirq_core(h, c, 1); |
2833 | ||
6b4d96b8 | 2834 | cmd_special_free(h, c); |
7c832835 | 2835 | return return_status; |
1da177e4 | 2836 | } |
7c832835 | 2837 | |
f70dba83 | 2838 | static void cciss_geometry_inquiry(ctlr_info_t *h, int logvol, |
7b838bde | 2839 | sector_t total_size, |
7c832835 BH |
2840 | unsigned int block_size, |
2841 | InquiryData_struct *inq_buff, | |
2842 | drive_info_struct *drv) | |
1da177e4 LT |
2843 | { |
2844 | int return_code; | |
00988a35 | 2845 | unsigned long t; |
b57695fe | 2846 | unsigned char scsi3addr[8]; |
00988a35 | 2847 | |
1da177e4 | 2848 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
f70dba83 SC |
2849 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
2850 | return_code = sendcmd_withirq(h, CISS_INQUIRY, inq_buff, | |
7b838bde | 2851 | sizeof(*inq_buff), 0xC1, scsi3addr, TYPE_CMD); |
1da177e4 | 2852 | if (return_code == IO_OK) { |
7c832835 | 2853 | if (inq_buff->data_byte[8] == 0xFF) { |
b2a4a43d SC |
2854 | dev_warn(&h->pdev->dev, |
2855 | "reading geometry failed, volume " | |
7c832835 | 2856 | "does not support reading geometry\n"); |
1da177e4 | 2857 | drv->heads = 255; |
b028461d | 2858 | drv->sectors = 32; /* Sectors per track */ |
7f42d3b8 | 2859 | drv->cylinders = total_size + 1; |
89f97ad1 | 2860 | drv->raid_level = RAID_UNKNOWN; |
1da177e4 | 2861 | } else { |
1da177e4 LT |
2862 | drv->heads = inq_buff->data_byte[6]; |
2863 | drv->sectors = inq_buff->data_byte[7]; | |
2864 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
2865 | drv->cylinders += inq_buff->data_byte[5]; | |
2866 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
2867 | } |
2868 | drv->block_size = block_size; | |
97c06978 | 2869 | drv->nr_blocks = total_size + 1; |
3f7705ea MW |
2870 | t = drv->heads * drv->sectors; |
2871 | if (t > 1) { | |
97c06978 MMOD |
2872 | sector_t real_size = total_size + 1; |
2873 | unsigned long rem = sector_div(real_size, t); | |
3f7705ea | 2874 | if (rem) |
97c06978 MMOD |
2875 | real_size++; |
2876 | drv->cylinders = real_size; | |
1da177e4 | 2877 | } |
7c832835 | 2878 | } else { /* Get geometry failed */ |
b2a4a43d | 2879 | dev_warn(&h->pdev->dev, "reading geometry failed\n"); |
1da177e4 | 2880 | } |
1da177e4 | 2881 | } |
7c832835 | 2882 | |
1da177e4 | 2883 | static void |
f70dba83 | 2884 | cciss_read_capacity(ctlr_info_t *h, int logvol, sector_t *total_size, |
7c832835 | 2885 | unsigned int *block_size) |
1da177e4 | 2886 | { |
00988a35 | 2887 | ReadCapdata_struct *buf; |
1da177e4 | 2888 | int return_code; |
b57695fe | 2889 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2890 | |
2891 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); | |
2892 | if (!buf) { | |
b2a4a43d | 2893 | dev_warn(&h->pdev->dev, "out of memory\n"); |
00988a35 MMOD |
2894 | return; |
2895 | } | |
1aebe187 | 2896 | |
f70dba83 SC |
2897 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
2898 | return_code = sendcmd_withirq(h, CCISS_READ_CAPACITY, buf, | |
7b838bde | 2899 | sizeof(ReadCapdata_struct), 0, scsi3addr, TYPE_CMD); |
1da177e4 | 2900 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2901 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
2902 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
7c832835 | 2903 | } else { /* read capacity command failed */ |
b2a4a43d | 2904 | dev_warn(&h->pdev->dev, "read capacity failed\n"); |
1da177e4 LT |
2905 | *total_size = 0; |
2906 | *block_size = BLOCK_SIZE; | |
2907 | } | |
00988a35 | 2908 | kfree(buf); |
00988a35 MMOD |
2909 | } |
2910 | ||
f70dba83 | 2911 | static void cciss_read_capacity_16(ctlr_info_t *h, int logvol, |
7b838bde | 2912 | sector_t *total_size, unsigned int *block_size) |
00988a35 MMOD |
2913 | { |
2914 | ReadCapdata_struct_16 *buf; | |
2915 | int return_code; | |
b57695fe | 2916 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2917 | |
2918 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2919 | if (!buf) { | |
b2a4a43d | 2920 | dev_warn(&h->pdev->dev, "out of memory\n"); |
00988a35 MMOD |
2921 | return; |
2922 | } | |
1aebe187 | 2923 | |
f70dba83 SC |
2924 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
2925 | return_code = sendcmd_withirq(h, CCISS_READ_CAPACITY_16, | |
2926 | buf, sizeof(ReadCapdata_struct_16), | |
7b838bde | 2927 | 0, scsi3addr, TYPE_CMD); |
00988a35 | 2928 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2929 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
2930 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
00988a35 | 2931 | } else { /* read capacity command failed */ |
b2a4a43d | 2932 | dev_warn(&h->pdev->dev, "read capacity failed\n"); |
00988a35 MMOD |
2933 | *total_size = 0; |
2934 | *block_size = BLOCK_SIZE; | |
2935 | } | |
b2a4a43d | 2936 | dev_info(&h->pdev->dev, " blocks= %llu block_size= %d\n", |
97c06978 | 2937 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2938 | kfree(buf); |
1da177e4 LT |
2939 | } |
2940 | ||
1da177e4 LT |
2941 | static int cciss_revalidate(struct gendisk *disk) |
2942 | { | |
2943 | ctlr_info_t *h = get_host(disk); | |
2944 | drive_info_struct *drv = get_drv(disk); | |
2945 | int logvol; | |
7c832835 | 2946 | int FOUND = 0; |
1da177e4 | 2947 | unsigned int block_size; |
00988a35 | 2948 | sector_t total_size; |
1da177e4 LT |
2949 | InquiryData_struct *inq_buff = NULL; |
2950 | ||
68264e9d | 2951 | for (logvol = 0; logvol <= h->highest_lun; logvol++) { |
0fc13c89 | 2952 | if (!h->drv[logvol]) |
453434cf | 2953 | continue; |
9cef0d2f | 2954 | if (memcmp(h->drv[logvol]->LunID, drv->LunID, |
39ccf9a6 | 2955 | sizeof(drv->LunID)) == 0) { |
7c832835 | 2956 | FOUND = 1; |
1da177e4 LT |
2957 | break; |
2958 | } | |
2959 | } | |
2960 | ||
7c832835 BH |
2961 | if (!FOUND) |
2962 | return 1; | |
1da177e4 | 2963 | |
7c832835 BH |
2964 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2965 | if (inq_buff == NULL) { | |
b2a4a43d | 2966 | dev_warn(&h->pdev->dev, "out of memory\n"); |
7c832835 BH |
2967 | return 1; |
2968 | } | |
00988a35 | 2969 | if (h->cciss_read == CCISS_READ_10) { |
f70dba83 | 2970 | cciss_read_capacity(h, logvol, |
00988a35 MMOD |
2971 | &total_size, &block_size); |
2972 | } else { | |
f70dba83 | 2973 | cciss_read_capacity_16(h, logvol, |
00988a35 MMOD |
2974 | &total_size, &block_size); |
2975 | } | |
f70dba83 | 2976 | cciss_geometry_inquiry(h, logvol, total_size, block_size, |
7c832835 | 2977 | inq_buff, drv); |
1da177e4 | 2978 | |
e1defc4f | 2979 | blk_queue_logical_block_size(drv->queue, drv->block_size); |
1da177e4 LT |
2980 | set_capacity(disk, drv->nr_blocks); |
2981 | ||
1da177e4 LT |
2982 | kfree(inq_buff); |
2983 | return 0; | |
2984 | } | |
2985 | ||
1da177e4 LT |
2986 | /* |
2987 | * Map (physical) PCI mem into (virtual) kernel space | |
2988 | */ | |
2989 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2990 | { | |
7c832835 BH |
2991 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2992 | ulong page_offs = ((ulong) base) - page_base; | |
2993 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2994 | |
7c832835 | 2995 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2996 | } |
2997 | ||
7c832835 BH |
2998 | /* |
2999 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
3000 | * the Q to wait for completion. | |
3001 | */ | |
3002 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
3003 | { |
3004 | CommandList_struct *c; | |
7c832835 | 3005 | |
e6e1ee93 JA |
3006 | while (!list_empty(&h->reqQ)) { |
3007 | c = list_entry(h->reqQ.next, CommandList_struct, list); | |
1da177e4 LT |
3008 | /* can't do anything if fifo is full */ |
3009 | if ((h->access.fifo_full(h))) { | |
b2a4a43d | 3010 | dev_warn(&h->pdev->dev, "fifo full\n"); |
1da177e4 LT |
3011 | break; |
3012 | } | |
3013 | ||
7c832835 | 3014 | /* Get the first entry from the Request Q */ |
8a3173de | 3015 | removeQ(c); |
1da177e4 | 3016 | h->Qdepth--; |
7c832835 BH |
3017 | |
3018 | /* Tell the controller execute command */ | |
1da177e4 | 3019 | h->access.submit_command(h, c); |
7c832835 BH |
3020 | |
3021 | /* Put job onto the completed Q */ | |
8a3173de | 3022 | addQ(&h->cmpQ, c); |
1da177e4 LT |
3023 | } |
3024 | } | |
7c832835 | 3025 | |
f70dba83 | 3026 | /* Assumes that h->lock is held. */ |
1da177e4 LT |
3027 | /* Zeros out the error record and then resends the command back */ |
3028 | /* to the controller */ | |
7c832835 | 3029 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
3030 | { |
3031 | /* erase the old error information */ | |
3032 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
3033 | ||
3034 | /* add it to software queue and then send it to the controller */ | |
8a3173de | 3035 | addQ(&h->reqQ, c); |
1da177e4 | 3036 | h->Qdepth++; |
7c832835 | 3037 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
3038 | h->maxQsinceinit = h->Qdepth; |
3039 | ||
3040 | start_io(h); | |
3041 | } | |
a9925a06 | 3042 | |
1a614f50 SC |
3043 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
3044 | unsigned int msg_byte, unsigned int host_byte, | |
3045 | unsigned int driver_byte) | |
3046 | { | |
3047 | /* inverse of macros in scsi.h */ | |
3048 | return (scsi_status_byte & 0xff) | | |
3049 | ((msg_byte & 0xff) << 8) | | |
3050 | ((host_byte & 0xff) << 16) | | |
3051 | ((driver_byte & 0xff) << 24); | |
3052 | } | |
3053 | ||
0a9279cc MM |
3054 | static inline int evaluate_target_status(ctlr_info_t *h, |
3055 | CommandList_struct *cmd, int *retry_cmd) | |
03bbfee5 MMOD |
3056 | { |
3057 | unsigned char sense_key; | |
1a614f50 SC |
3058 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
3059 | int error_value; | |
3060 | ||
0a9279cc | 3061 | *retry_cmd = 0; |
1a614f50 SC |
3062 | /* If we get in here, it means we got "target status", that is, scsi status */ |
3063 | status_byte = cmd->err_info->ScsiStatus; | |
3064 | driver_byte = DRIVER_OK; | |
3065 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ | |
3066 | ||
33659ebb | 3067 | if (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) |
1a614f50 SC |
3068 | host_byte = DID_PASSTHROUGH; |
3069 | else | |
3070 | host_byte = DID_OK; | |
3071 | ||
3072 | error_value = make_status_bytes(status_byte, msg_byte, | |
3073 | host_byte, driver_byte); | |
03bbfee5 | 3074 | |
1a614f50 | 3075 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
33659ebb | 3076 | if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) |
b2a4a43d | 3077 | dev_warn(&h->pdev->dev, "cmd %p " |
03bbfee5 MMOD |
3078 | "has SCSI Status 0x%x\n", |
3079 | cmd, cmd->err_info->ScsiStatus); | |
1a614f50 | 3080 | return error_value; |
03bbfee5 MMOD |
3081 | } |
3082 | ||
3083 | /* check the sense key */ | |
3084 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
3085 | /* no status or recovered error */ | |
33659ebb CH |
3086 | if (((sense_key == 0x0) || (sense_key == 0x1)) && |
3087 | (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC)) | |
1a614f50 | 3088 | error_value = 0; |
03bbfee5 | 3089 | |
0a9279cc | 3090 | if (check_for_unit_attention(h, cmd)) { |
33659ebb | 3091 | *retry_cmd = !(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC); |
0a9279cc MM |
3092 | return 0; |
3093 | } | |
3094 | ||
33659ebb CH |
3095 | /* Not SG_IO or similar? */ |
3096 | if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) { | |
1a614f50 | 3097 | if (error_value != 0) |
b2a4a43d | 3098 | dev_warn(&h->pdev->dev, "cmd %p has CHECK CONDITION" |
03bbfee5 | 3099 | " sense key = 0x%x\n", cmd, sense_key); |
1a614f50 | 3100 | return error_value; |
03bbfee5 MMOD |
3101 | } |
3102 | ||
3103 | /* SG_IO or similar, copy sense data back */ | |
3104 | if (cmd->rq->sense) { | |
3105 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) | |
3106 | cmd->rq->sense_len = cmd->err_info->SenseLen; | |
3107 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, | |
3108 | cmd->rq->sense_len); | |
3109 | } else | |
3110 | cmd->rq->sense_len = 0; | |
3111 | ||
1a614f50 | 3112 | return error_value; |
03bbfee5 MMOD |
3113 | } |
3114 | ||
7c832835 | 3115 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
3116 | * buffers for the completed job. Note that this function does not need |
3117 | * to hold the hba/queue lock. | |
7c832835 BH |
3118 | */ |
3119 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
3120 | int timeout) | |
1da177e4 | 3121 | { |
1da177e4 | 3122 | int retry_cmd = 0; |
198b7660 MMOD |
3123 | struct request *rq = cmd->rq; |
3124 | ||
3125 | rq->errors = 0; | |
7c832835 | 3126 | |
1da177e4 | 3127 | if (timeout) |
1a614f50 | 3128 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
1da177e4 | 3129 | |
d38ae168 MMOD |
3130 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
3131 | goto after_error_processing; | |
7c832835 | 3132 | |
d38ae168 | 3133 | switch (cmd->err_info->CommandStatus) { |
d38ae168 | 3134 | case CMD_TARGET_STATUS: |
0a9279cc | 3135 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
d38ae168 MMOD |
3136 | break; |
3137 | case CMD_DATA_UNDERRUN: | |
33659ebb | 3138 | if (cmd->rq->cmd_type == REQ_TYPE_FS) { |
b2a4a43d | 3139 | dev_warn(&h->pdev->dev, "cmd %p has" |
03bbfee5 MMOD |
3140 | " completed with data underrun " |
3141 | "reported\n", cmd); | |
c3a4d78c | 3142 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
03bbfee5 | 3143 | } |
d38ae168 MMOD |
3144 | break; |
3145 | case CMD_DATA_OVERRUN: | |
33659ebb | 3146 | if (cmd->rq->cmd_type == REQ_TYPE_FS) |
b2a4a43d | 3147 | dev_warn(&h->pdev->dev, "cciss: cmd %p has" |
03bbfee5 MMOD |
3148 | " completed with data overrun " |
3149 | "reported\n", cmd); | |
d38ae168 MMOD |
3150 | break; |
3151 | case CMD_INVALID: | |
b2a4a43d | 3152 | dev_warn(&h->pdev->dev, "cciss: cmd %p is " |
d38ae168 | 3153 | "reported invalid\n", cmd); |
1a614f50 SC |
3154 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3155 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3156 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3157 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3158 | break; |
3159 | case CMD_PROTOCOL_ERR: | |
b2a4a43d SC |
3160 | dev_warn(&h->pdev->dev, "cciss: cmd %p has " |
3161 | "protocol error\n", cmd); | |
1a614f50 SC |
3162 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3163 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3164 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3165 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3166 | break; |
3167 | case CMD_HARDWARE_ERR: | |
b2a4a43d | 3168 | dev_warn(&h->pdev->dev, "cciss: cmd %p had " |
d38ae168 | 3169 | " hardware error\n", cmd); |
1a614f50 SC |
3170 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3171 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3172 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3173 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3174 | break; |
3175 | case CMD_CONNECTION_LOST: | |
b2a4a43d | 3176 | dev_warn(&h->pdev->dev, "cciss: cmd %p had " |
d38ae168 | 3177 | "connection lost\n", cmd); |
1a614f50 SC |
3178 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3179 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3180 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3181 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3182 | break; |
3183 | case CMD_ABORTED: | |
b2a4a43d | 3184 | dev_warn(&h->pdev->dev, "cciss: cmd %p was " |
d38ae168 | 3185 | "aborted\n", cmd); |
1a614f50 SC |
3186 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3187 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3188 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3189 | DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
3190 | break; |
3191 | case CMD_ABORT_FAILED: | |
b2a4a43d | 3192 | dev_warn(&h->pdev->dev, "cciss: cmd %p reports " |
d38ae168 | 3193 | "abort failed\n", cmd); |
1a614f50 SC |
3194 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3195 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3196 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3197 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3198 | break; |
3199 | case CMD_UNSOLICITED_ABORT: | |
b2a4a43d | 3200 | dev_warn(&h->pdev->dev, "cciss%d: unsolicited " |
d38ae168 MMOD |
3201 | "abort %p\n", h->ctlr, cmd); |
3202 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
3203 | retry_cmd = 1; | |
b2a4a43d | 3204 | dev_warn(&h->pdev->dev, "retrying %p\n", cmd); |
d38ae168 MMOD |
3205 | cmd->retry_count++; |
3206 | } else | |
b2a4a43d SC |
3207 | dev_warn(&h->pdev->dev, |
3208 | "%p retried too many times\n", cmd); | |
1a614f50 SC |
3209 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3210 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3211 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3212 | DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
3213 | break; |
3214 | case CMD_TIMEOUT: | |
b2a4a43d | 3215 | dev_warn(&h->pdev->dev, "cmd %p timedout\n", cmd); |
1a614f50 SC |
3216 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3217 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3218 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3219 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 | 3220 | break; |
6d9a4f9e SC |
3221 | case CMD_UNABORTABLE: |
3222 | dev_warn(&h->pdev->dev, "cmd %p unabortable\n", cmd); | |
3223 | rq->errors = make_status_bytes(SAM_STAT_GOOD, | |
3224 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3225 | cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC ? | |
3226 | DID_PASSTHROUGH : DID_ERROR); | |
3227 | break; | |
d38ae168 | 3228 | default: |
b2a4a43d | 3229 | dev_warn(&h->pdev->dev, "cmd %p returned " |
d38ae168 MMOD |
3230 | "unknown status %x\n", cmd, |
3231 | cmd->err_info->CommandStatus); | |
1a614f50 SC |
3232 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3233 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3234 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3235 | DID_PASSTHROUGH : DID_ERROR); | |
1da177e4 | 3236 | } |
d38ae168 MMOD |
3237 | |
3238 | after_error_processing: | |
3239 | ||
1da177e4 | 3240 | /* We need to return this command */ |
7c832835 BH |
3241 | if (retry_cmd) { |
3242 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 3243 | return; |
7c832835 | 3244 | } |
03bbfee5 | 3245 | cmd->rq->completion_data = cmd; |
a9925a06 | 3246 | blk_complete_request(cmd->rq); |
1da177e4 LT |
3247 | } |
3248 | ||
0c2b3908 MM |
3249 | static inline u32 cciss_tag_contains_index(u32 tag) |
3250 | { | |
5e216153 | 3251 | #define DIRECT_LOOKUP_BIT 0x10 |
0c2b3908 MM |
3252 | return tag & DIRECT_LOOKUP_BIT; |
3253 | } | |
3254 | ||
3255 | static inline u32 cciss_tag_to_index(u32 tag) | |
3256 | { | |
5e216153 | 3257 | #define DIRECT_LOOKUP_SHIFT 5 |
0c2b3908 MM |
3258 | return tag >> DIRECT_LOOKUP_SHIFT; |
3259 | } | |
3260 | ||
0498cc2a | 3261 | static inline u32 cciss_tag_discard_error_bits(ctlr_info_t *h, u32 tag) |
0c2b3908 | 3262 | { |
0498cc2a SC |
3263 | #define CCISS_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1) |
3264 | #define CCISS_SIMPLE_ERROR_BITS 0x03 | |
3265 | if (likely(h->transMethod & CFGTBL_Trans_Performant)) | |
3266 | return tag & ~CCISS_PERF_ERROR_BITS; | |
3267 | return tag & ~CCISS_SIMPLE_ERROR_BITS; | |
0c2b3908 MM |
3268 | } |
3269 | ||
3270 | static inline void cciss_mark_tag_indexed(u32 *tag) | |
3271 | { | |
3272 | *tag |= DIRECT_LOOKUP_BIT; | |
3273 | } | |
3274 | ||
3275 | static inline void cciss_set_tag_index(u32 *tag, u32 index) | |
3276 | { | |
3277 | *tag |= (index << DIRECT_LOOKUP_SHIFT); | |
3278 | } | |
3279 | ||
7c832835 BH |
3280 | /* |
3281 | * Get a request and submit it to the controller. | |
1da177e4 | 3282 | */ |
165125e1 | 3283 | static void do_cciss_request(struct request_queue *q) |
1da177e4 | 3284 | { |
7c832835 | 3285 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 3286 | CommandList_struct *c; |
00988a35 MMOD |
3287 | sector_t start_blk; |
3288 | int seg; | |
1da177e4 LT |
3289 | struct request *creq; |
3290 | u64bit temp64; | |
5c07a311 DB |
3291 | struct scatterlist *tmp_sg; |
3292 | SGDescriptor_struct *curr_sg; | |
1da177e4 LT |
3293 | drive_info_struct *drv; |
3294 | int i, dir; | |
5c07a311 DB |
3295 | int sg_index = 0; |
3296 | int chained = 0; | |
1da177e4 | 3297 | |
7c832835 | 3298 | queue: |
9934c8c0 | 3299 | creq = blk_peek_request(q); |
1da177e4 LT |
3300 | if (!creq) |
3301 | goto startio; | |
3302 | ||
5c07a311 | 3303 | BUG_ON(creq->nr_phys_segments > h->maxsgentries); |
1da177e4 | 3304 | |
6b4d96b8 SC |
3305 | c = cmd_alloc(h); |
3306 | if (!c) | |
1da177e4 LT |
3307 | goto full; |
3308 | ||
9934c8c0 | 3309 | blk_start_request(creq); |
1da177e4 | 3310 | |
5c07a311 | 3311 | tmp_sg = h->scatter_list[c->cmdindex]; |
1da177e4 LT |
3312 | spin_unlock_irq(q->queue_lock); |
3313 | ||
3314 | c->cmd_type = CMD_RWREQ; | |
3315 | c->rq = creq; | |
7c832835 BH |
3316 | |
3317 | /* fill in the request */ | |
1da177e4 | 3318 | drv = creq->rq_disk->private_data; |
b028461d | 3319 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
33079b21 MM |
3320 | /* got command from pool, so use the command block index instead */ |
3321 | /* for direct lookups. */ | |
3322 | /* The first 2 bits are reserved for controller error reporting. */ | |
0c2b3908 MM |
3323 | cciss_set_tag_index(&c->Header.Tag.lower, c->cmdindex); |
3324 | cciss_mark_tag_indexed(&c->Header.Tag.lower); | |
39ccf9a6 | 3325 | memcpy(&c->Header.LUN, drv->LunID, sizeof(drv->LunID)); |
b028461d | 3326 | c->Request.CDBLen = 10; /* 12 byte commands not in FW yet; */ |
3327 | c->Request.Type.Type = TYPE_CMD; /* It is a command. */ | |
7c832835 BH |
3328 | c->Request.Type.Attribute = ATTR_SIMPLE; |
3329 | c->Request.Type.Direction = | |
a52de245 | 3330 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
b028461d | 3331 | c->Request.Timeout = 0; /* Don't time out */ |
7c832835 | 3332 | c->Request.CDB[0] = |
00988a35 | 3333 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
83096ebf | 3334 | start_blk = blk_rq_pos(creq); |
b2a4a43d | 3335 | dev_dbg(&h->pdev->dev, "sector =%d nr_sectors=%d\n", |
83096ebf | 3336 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); |
5c07a311 | 3337 | sg_init_table(tmp_sg, h->maxsgentries); |
1da177e4 LT |
3338 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
3339 | ||
7c832835 | 3340 | /* get the DMA records for the setup */ |
1da177e4 LT |
3341 | if (c->Request.Type.Direction == XFER_READ) |
3342 | dir = PCI_DMA_FROMDEVICE; | |
3343 | else | |
3344 | dir = PCI_DMA_TODEVICE; | |
3345 | ||
5c07a311 DB |
3346 | curr_sg = c->SG; |
3347 | sg_index = 0; | |
3348 | chained = 0; | |
3349 | ||
7c832835 | 3350 | for (i = 0; i < seg; i++) { |
5c07a311 DB |
3351 | if (((sg_index+1) == (h->max_cmd_sgentries)) && |
3352 | !chained && ((seg - i) > 1)) { | |
5c07a311 | 3353 | /* Point to next chain block. */ |
dccc9b56 | 3354 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
5c07a311 DB |
3355 | sg_index = 0; |
3356 | chained = 1; | |
3357 | } | |
3358 | curr_sg[sg_index].Len = tmp_sg[i].length; | |
45711f1a | 3359 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
5c07a311 DB |
3360 | tmp_sg[i].offset, |
3361 | tmp_sg[i].length, dir); | |
3362 | curr_sg[sg_index].Addr.lower = temp64.val32.lower; | |
3363 | curr_sg[sg_index].Addr.upper = temp64.val32.upper; | |
3364 | curr_sg[sg_index].Ext = 0; /* we are not chaining */ | |
5c07a311 | 3365 | ++sg_index; |
1da177e4 | 3366 | } |
d45033ef SC |
3367 | if (chained) |
3368 | cciss_map_sg_chain_block(h, c, h->cmd_sg_list[c->cmdindex], | |
3369 | (seg - (h->max_cmd_sgentries - 1)) * | |
3370 | sizeof(SGDescriptor_struct)); | |
5c07a311 | 3371 | |
7c832835 BH |
3372 | /* track how many SG entries we are using */ |
3373 | if (seg > h->maxSG) | |
3374 | h->maxSG = seg; | |
1da177e4 | 3375 | |
b2a4a43d | 3376 | dev_dbg(&h->pdev->dev, "Submitting %u sectors in %d segments " |
5c07a311 DB |
3377 | "chained[%d]\n", |
3378 | blk_rq_sectors(creq), seg, chained); | |
1da177e4 | 3379 | |
5e216153 MM |
3380 | c->Header.SGTotal = seg + chained; |
3381 | if (seg <= h->max_cmd_sgentries) | |
3382 | c->Header.SGList = c->Header.SGTotal; | |
3383 | else | |
5c07a311 | 3384 | c->Header.SGList = h->max_cmd_sgentries; |
5e216153 | 3385 | set_performant_mode(h, c); |
5c07a311 | 3386 | |
33659ebb | 3387 | if (likely(creq->cmd_type == REQ_TYPE_FS)) { |
03bbfee5 MMOD |
3388 | if(h->cciss_read == CCISS_READ_10) { |
3389 | c->Request.CDB[1] = 0; | |
b028461d | 3390 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; /* MSB */ |
03bbfee5 MMOD |
3391 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; |
3392 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
3393 | c->Request.CDB[5] = start_blk & 0xff; | |
b028461d | 3394 | c->Request.CDB[6] = 0; /* (sect >> 24) & 0xff; MSB */ |
83096ebf TH |
3395 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
3396 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3397 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
3398 | } else { | |
582539e5 RD |
3399 | u32 upper32 = upper_32_bits(start_blk); |
3400 | ||
03bbfee5 MMOD |
3401 | c->Request.CDBLen = 16; |
3402 | c->Request.CDB[1]= 0; | |
b028461d | 3403 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; /* MSB */ |
582539e5 RD |
3404 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; |
3405 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; | |
3406 | c->Request.CDB[5]= upper32 & 0xff; | |
03bbfee5 MMOD |
3407 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
3408 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
3409 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
3410 | c->Request.CDB[9]= start_blk & 0xff; | |
83096ebf TH |
3411 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
3412 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; | |
3413 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; | |
3414 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3415 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
3416 | } | |
33659ebb | 3417 | } else if (creq->cmd_type == REQ_TYPE_BLOCK_PC) { |
03bbfee5 MMOD |
3418 | c->Request.CDBLen = creq->cmd_len; |
3419 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); | |
00988a35 | 3420 | } else { |
b2a4a43d SC |
3421 | dev_warn(&h->pdev->dev, "bad request type %d\n", |
3422 | creq->cmd_type); | |
03bbfee5 | 3423 | BUG(); |
00988a35 | 3424 | } |
1da177e4 LT |
3425 | |
3426 | spin_lock_irq(q->queue_lock); | |
3427 | ||
8a3173de | 3428 | addQ(&h->reqQ, c); |
1da177e4 | 3429 | h->Qdepth++; |
7c832835 BH |
3430 | if (h->Qdepth > h->maxQsinceinit) |
3431 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
3432 | |
3433 | goto queue; | |
00988a35 | 3434 | full: |
1da177e4 | 3435 | blk_stop_queue(q); |
00988a35 | 3436 | startio: |
1da177e4 LT |
3437 | /* We will already have the driver lock here so not need |
3438 | * to lock it. | |
7c832835 | 3439 | */ |
1da177e4 LT |
3440 | start_io(h); |
3441 | } | |
3442 | ||
3da8b713 | 3443 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
3444 | { | |
3da8b713 | 3445 | return h->access.command_completed(h); |
3da8b713 | 3446 | } |
3447 | ||
3448 | static inline int interrupt_pending(ctlr_info_t *h) | |
3449 | { | |
3da8b713 | 3450 | return h->access.intr_pending(h); |
3da8b713 | 3451 | } |
3452 | ||
3453 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
3454 | { | |
81125860 | 3455 | return ((h->access.intr_pending(h) == 0) || |
2cf3af1c | 3456 | (h->interrupts_enabled == 0)); |
3da8b713 | 3457 | } |
3458 | ||
0c2b3908 MM |
3459 | static inline int bad_tag(ctlr_info_t *h, u32 tag_index, |
3460 | u32 raw_tag) | |
1da177e4 | 3461 | { |
0c2b3908 MM |
3462 | if (unlikely(tag_index >= h->nr_cmds)) { |
3463 | dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); | |
3464 | return 1; | |
3465 | } | |
3466 | return 0; | |
3467 | } | |
3468 | ||
3469 | static inline void finish_cmd(ctlr_info_t *h, CommandList_struct *c, | |
3470 | u32 raw_tag) | |
3471 | { | |
3472 | removeQ(c); | |
3473 | if (likely(c->cmd_type == CMD_RWREQ)) | |
3474 | complete_command(h, c, 0); | |
3475 | else if (c->cmd_type == CMD_IOCTL_PEND) | |
3476 | complete(c->waiting); | |
3477 | #ifdef CONFIG_CISS_SCSI_TAPE | |
3478 | else if (c->cmd_type == CMD_SCSI) | |
3479 | complete_scsi_command(c, 0, raw_tag); | |
3480 | #endif | |
3481 | } | |
3482 | ||
29979a71 MM |
3483 | static inline u32 next_command(ctlr_info_t *h) |
3484 | { | |
3485 | u32 a; | |
3486 | ||
0498cc2a | 3487 | if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) |
29979a71 MM |
3488 | return h->access.command_completed(h); |
3489 | ||
3490 | if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { | |
3491 | a = *(h->reply_pool_head); /* Next cmd in ring buffer */ | |
3492 | (h->reply_pool_head)++; | |
3493 | h->commands_outstanding--; | |
3494 | } else { | |
3495 | a = FIFO_EMPTY; | |
3496 | } | |
3497 | /* Check for wraparound */ | |
3498 | if (h->reply_pool_head == (h->reply_pool + h->max_commands)) { | |
3499 | h->reply_pool_head = h->reply_pool; | |
3500 | h->reply_pool_wraparound ^= 1; | |
3501 | } | |
3502 | return a; | |
3503 | } | |
3504 | ||
0c2b3908 MM |
3505 | /* process completion of an indexed ("direct lookup") command */ |
3506 | static inline u32 process_indexed_cmd(ctlr_info_t *h, u32 raw_tag) | |
3507 | { | |
3508 | u32 tag_index; | |
1da177e4 | 3509 | CommandList_struct *c; |
0c2b3908 MM |
3510 | |
3511 | tag_index = cciss_tag_to_index(raw_tag); | |
3512 | if (bad_tag(h, tag_index, raw_tag)) | |
5e216153 | 3513 | return next_command(h); |
0c2b3908 MM |
3514 | c = h->cmd_pool + tag_index; |
3515 | finish_cmd(h, c, raw_tag); | |
5e216153 | 3516 | return next_command(h); |
0c2b3908 MM |
3517 | } |
3518 | ||
3519 | /* process completion of a non-indexed command */ | |
3520 | static inline u32 process_nonindexed_cmd(ctlr_info_t *h, u32 raw_tag) | |
3521 | { | |
0c2b3908 | 3522 | CommandList_struct *c = NULL; |
0c2b3908 MM |
3523 | __u32 busaddr_masked, tag_masked; |
3524 | ||
0498cc2a | 3525 | tag_masked = cciss_tag_discard_error_bits(h, raw_tag); |
e6e1ee93 | 3526 | list_for_each_entry(c, &h->cmpQ, list) { |
0498cc2a | 3527 | busaddr_masked = cciss_tag_discard_error_bits(h, c->busaddr); |
0c2b3908 MM |
3528 | if (busaddr_masked == tag_masked) { |
3529 | finish_cmd(h, c, raw_tag); | |
5e216153 | 3530 | return next_command(h); |
0c2b3908 MM |
3531 | } |
3532 | } | |
3533 | bad_tag(h, h->nr_cmds + 1, raw_tag); | |
5e216153 | 3534 | return next_command(h); |
0c2b3908 MM |
3535 | } |
3536 | ||
5afe2781 SC |
3537 | /* Some controllers, like p400, will give us one interrupt |
3538 | * after a soft reset, even if we turned interrupts off. | |
3539 | * Only need to check for this in the cciss_xxx_discard_completions | |
3540 | * functions. | |
3541 | */ | |
3542 | static int ignore_bogus_interrupt(ctlr_info_t *h) | |
3543 | { | |
3544 | if (likely(!reset_devices)) | |
3545 | return 0; | |
3546 | ||
3547 | if (likely(h->interrupts_enabled)) | |
3548 | return 0; | |
3549 | ||
3550 | dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled " | |
3551 | "(known firmware bug.) Ignoring.\n"); | |
3552 | ||
3553 | return 1; | |
3554 | } | |
3555 | ||
3556 | static irqreturn_t cciss_intx_discard_completions(int irq, void *dev_id) | |
3557 | { | |
3558 | ctlr_info_t *h = dev_id; | |
3559 | unsigned long flags; | |
3560 | u32 raw_tag; | |
3561 | ||
3562 | if (ignore_bogus_interrupt(h)) | |
3563 | return IRQ_NONE; | |
3564 | ||
3565 | if (interrupt_not_for_us(h)) | |
3566 | return IRQ_NONE; | |
3567 | spin_lock_irqsave(&h->lock, flags); | |
3568 | while (interrupt_pending(h)) { | |
3569 | raw_tag = get_next_completion(h); | |
3570 | while (raw_tag != FIFO_EMPTY) | |
3571 | raw_tag = next_command(h); | |
3572 | } | |
3573 | spin_unlock_irqrestore(&h->lock, flags); | |
3574 | return IRQ_HANDLED; | |
3575 | } | |
3576 | ||
3577 | static irqreturn_t cciss_msix_discard_completions(int irq, void *dev_id) | |
3578 | { | |
3579 | ctlr_info_t *h = dev_id; | |
3580 | unsigned long flags; | |
3581 | u32 raw_tag; | |
3582 | ||
3583 | if (ignore_bogus_interrupt(h)) | |
3584 | return IRQ_NONE; | |
3585 | ||
3586 | spin_lock_irqsave(&h->lock, flags); | |
3587 | raw_tag = get_next_completion(h); | |
3588 | while (raw_tag != FIFO_EMPTY) | |
3589 | raw_tag = next_command(h); | |
3590 | spin_unlock_irqrestore(&h->lock, flags); | |
3591 | return IRQ_HANDLED; | |
3592 | } | |
3593 | ||
0c2b3908 MM |
3594 | static irqreturn_t do_cciss_intx(int irq, void *dev_id) |
3595 | { | |
3596 | ctlr_info_t *h = dev_id; | |
1da177e4 | 3597 | unsigned long flags; |
0c2b3908 | 3598 | u32 raw_tag; |
1da177e4 | 3599 | |
3da8b713 | 3600 | if (interrupt_not_for_us(h)) |
1da177e4 | 3601 | return IRQ_NONE; |
f70dba83 | 3602 | spin_lock_irqsave(&h->lock, flags); |
3da8b713 | 3603 | while (interrupt_pending(h)) { |
0c2b3908 MM |
3604 | raw_tag = get_next_completion(h); |
3605 | while (raw_tag != FIFO_EMPTY) { | |
3606 | if (cciss_tag_contains_index(raw_tag)) | |
3607 | raw_tag = process_indexed_cmd(h, raw_tag); | |
3608 | else | |
3609 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
1da177e4 LT |
3610 | } |
3611 | } | |
f70dba83 | 3612 | spin_unlock_irqrestore(&h->lock, flags); |
0c2b3908 MM |
3613 | return IRQ_HANDLED; |
3614 | } | |
1da177e4 | 3615 | |
0c2b3908 MM |
3616 | /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never |
3617 | * check the interrupt pending register because it is not set. | |
3618 | */ | |
3619 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id) | |
3620 | { | |
3621 | ctlr_info_t *h = dev_id; | |
3622 | unsigned long flags; | |
3623 | u32 raw_tag; | |
8a3173de | 3624 | |
f70dba83 | 3625 | spin_lock_irqsave(&h->lock, flags); |
0c2b3908 MM |
3626 | raw_tag = get_next_completion(h); |
3627 | while (raw_tag != FIFO_EMPTY) { | |
3628 | if (cciss_tag_contains_index(raw_tag)) | |
3629 | raw_tag = process_indexed_cmd(h, raw_tag); | |
3630 | else | |
3631 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
1da177e4 | 3632 | } |
f70dba83 | 3633 | spin_unlock_irqrestore(&h->lock, flags); |
1da177e4 LT |
3634 | return IRQ_HANDLED; |
3635 | } | |
7c832835 | 3636 | |
b368c9dd AP |
3637 | /** |
3638 | * add_to_scan_list() - add controller to rescan queue | |
3639 | * @h: Pointer to the controller. | |
3640 | * | |
3641 | * Adds the controller to the rescan queue if not already on the queue. | |
3642 | * | |
3643 | * returns 1 if added to the queue, 0 if skipped (could be on the | |
3644 | * queue already, or the controller could be initializing or shutting | |
3645 | * down). | |
3646 | **/ | |
3647 | static int add_to_scan_list(struct ctlr_info *h) | |
3648 | { | |
3649 | struct ctlr_info *test_h; | |
3650 | int found = 0; | |
3651 | int ret = 0; | |
3652 | ||
3653 | if (h->busy_initializing) | |
3654 | return 0; | |
3655 | ||
3656 | if (!mutex_trylock(&h->busy_shutting_down)) | |
3657 | return 0; | |
3658 | ||
3659 | mutex_lock(&scan_mutex); | |
3660 | list_for_each_entry(test_h, &scan_q, scan_list) { | |
3661 | if (test_h == h) { | |
3662 | found = 1; | |
3663 | break; | |
3664 | } | |
3665 | } | |
3666 | if (!found && !h->busy_scanning) { | |
3667 | INIT_COMPLETION(h->scan_wait); | |
3668 | list_add_tail(&h->scan_list, &scan_q); | |
3669 | ret = 1; | |
3670 | } | |
3671 | mutex_unlock(&scan_mutex); | |
3672 | mutex_unlock(&h->busy_shutting_down); | |
3673 | ||
3674 | return ret; | |
3675 | } | |
3676 | ||
3677 | /** | |
3678 | * remove_from_scan_list() - remove controller from rescan queue | |
3679 | * @h: Pointer to the controller. | |
3680 | * | |
3681 | * Removes the controller from the rescan queue if present. Blocks if | |
fd8489cf SC |
3682 | * the controller is currently conducting a rescan. The controller |
3683 | * can be in one of three states: | |
3684 | * 1. Doesn't need a scan | |
3685 | * 2. On the scan list, but not scanning yet (we remove it) | |
3686 | * 3. Busy scanning (and not on the list). In this case we want to wait for | |
3687 | * the scan to complete to make sure the scanning thread for this | |
3688 | * controller is completely idle. | |
b368c9dd AP |
3689 | **/ |
3690 | static void remove_from_scan_list(struct ctlr_info *h) | |
3691 | { | |
3692 | struct ctlr_info *test_h, *tmp_h; | |
b368c9dd AP |
3693 | |
3694 | mutex_lock(&scan_mutex); | |
3695 | list_for_each_entry_safe(test_h, tmp_h, &scan_q, scan_list) { | |
fd8489cf | 3696 | if (test_h == h) { /* state 2. */ |
b368c9dd AP |
3697 | list_del(&h->scan_list); |
3698 | complete_all(&h->scan_wait); | |
3699 | mutex_unlock(&scan_mutex); | |
3700 | return; | |
3701 | } | |
3702 | } | |
fd8489cf SC |
3703 | if (h->busy_scanning) { /* state 3. */ |
3704 | mutex_unlock(&scan_mutex); | |
b368c9dd | 3705 | wait_for_completion(&h->scan_wait); |
fd8489cf SC |
3706 | } else { /* state 1, nothing to do. */ |
3707 | mutex_unlock(&scan_mutex); | |
3708 | } | |
b368c9dd AP |
3709 | } |
3710 | ||
3711 | /** | |
3712 | * scan_thread() - kernel thread used to rescan controllers | |
3713 | * @data: Ignored. | |
3714 | * | |
3715 | * A kernel thread used scan for drive topology changes on | |
3716 | * controllers. The thread processes only one controller at a time | |
3717 | * using a queue. Controllers are added to the queue using | |
3718 | * add_to_scan_list() and removed from the queue either after done | |
3719 | * processing or using remove_from_scan_list(). | |
3720 | * | |
3721 | * returns 0. | |
3722 | **/ | |
0a9279cc MM |
3723 | static int scan_thread(void *data) |
3724 | { | |
b368c9dd | 3725 | struct ctlr_info *h; |
0a9279cc | 3726 | |
b368c9dd AP |
3727 | while (1) { |
3728 | set_current_state(TASK_INTERRUPTIBLE); | |
3729 | schedule(); | |
0a9279cc MM |
3730 | if (kthread_should_stop()) |
3731 | break; | |
b368c9dd AP |
3732 | |
3733 | while (1) { | |
3734 | mutex_lock(&scan_mutex); | |
3735 | if (list_empty(&scan_q)) { | |
3736 | mutex_unlock(&scan_mutex); | |
3737 | break; | |
3738 | } | |
3739 | ||
3740 | h = list_entry(scan_q.next, | |
3741 | struct ctlr_info, | |
3742 | scan_list); | |
3743 | list_del(&h->scan_list); | |
3744 | h->busy_scanning = 1; | |
3745 | mutex_unlock(&scan_mutex); | |
3746 | ||
d06dfbd2 SC |
3747 | rebuild_lun_table(h, 0, 0); |
3748 | complete_all(&h->scan_wait); | |
3749 | mutex_lock(&scan_mutex); | |
3750 | h->busy_scanning = 0; | |
3751 | mutex_unlock(&scan_mutex); | |
b368c9dd | 3752 | } |
0a9279cc | 3753 | } |
b368c9dd | 3754 | |
0a9279cc MM |
3755 | return 0; |
3756 | } | |
3757 | ||
3758 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) | |
3759 | { | |
3760 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) | |
3761 | return 0; | |
3762 | ||
3763 | switch (c->err_info->SenseInfo[12]) { | |
3764 | case STATE_CHANGED: | |
b2a4a43d SC |
3765 | dev_warn(&h->pdev->dev, "a state change " |
3766 | "detected, command retried\n"); | |
0a9279cc MM |
3767 | return 1; |
3768 | break; | |
3769 | case LUN_FAILED: | |
b2a4a43d SC |
3770 | dev_warn(&h->pdev->dev, "LUN failure " |
3771 | "detected, action required\n"); | |
0a9279cc MM |
3772 | return 1; |
3773 | break; | |
3774 | case REPORT_LUNS_CHANGED: | |
b2a4a43d | 3775 | dev_warn(&h->pdev->dev, "report LUN data changed\n"); |
da002184 SC |
3776 | /* |
3777 | * Here, we could call add_to_scan_list and wake up the scan thread, | |
3778 | * except that it's quite likely that we will get more than one | |
3779 | * REPORT_LUNS_CHANGED condition in quick succession, which means | |
3780 | * that those which occur after the first one will likely happen | |
3781 | * *during* the scan_thread's rescan. And the rescan code is not | |
3782 | * robust enough to restart in the middle, undoing what it has already | |
3783 | * done, and it's not clear that it's even possible to do this, since | |
3784 | * part of what it does is notify the block layer, which starts | |
3785 | * doing it's own i/o to read partition tables and so on, and the | |
3786 | * driver doesn't have visibility to know what might need undoing. | |
3787 | * In any event, if possible, it is horribly complicated to get right | |
3788 | * so we just don't do it for now. | |
3789 | * | |
3790 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. | |
3791 | */ | |
0a9279cc MM |
3792 | return 1; |
3793 | break; | |
3794 | case POWER_OR_RESET: | |
b2a4a43d SC |
3795 | dev_warn(&h->pdev->dev, |
3796 | "a power on or device reset detected\n"); | |
0a9279cc MM |
3797 | return 1; |
3798 | break; | |
3799 | case UNIT_ATTENTION_CLEARED: | |
b2a4a43d SC |
3800 | dev_warn(&h->pdev->dev, |
3801 | "unit attention cleared by another initiator\n"); | |
0a9279cc MM |
3802 | return 1; |
3803 | break; | |
3804 | default: | |
b2a4a43d SC |
3805 | dev_warn(&h->pdev->dev, "unknown unit attention detected\n"); |
3806 | return 1; | |
0a9279cc MM |
3807 | } |
3808 | } | |
3809 | ||
7c832835 | 3810 | /* |
d14c4ab5 | 3811 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 3812 | * the io functions. |
7c832835 | 3813 | * This is for debug only. |
1da177e4 | 3814 | */ |
b2a4a43d | 3815 | static void print_cfg_table(ctlr_info_t *h) |
1da177e4 LT |
3816 | { |
3817 | int i; | |
3818 | char temp_name[17]; | |
b2a4a43d | 3819 | CfgTable_struct *tb = h->cfgtable; |
1da177e4 | 3820 | |
b2a4a43d SC |
3821 | dev_dbg(&h->pdev->dev, "Controller Configuration information\n"); |
3822 | dev_dbg(&h->pdev->dev, "------------------------------------\n"); | |
7c832835 | 3823 | for (i = 0; i < 4; i++) |
1da177e4 | 3824 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 | 3825 | temp_name[4] = '\0'; |
b2a4a43d SC |
3826 | dev_dbg(&h->pdev->dev, " Signature = %s\n", temp_name); |
3827 | dev_dbg(&h->pdev->dev, " Spec Number = %d\n", | |
3828 | readl(&(tb->SpecValence))); | |
3829 | dev_dbg(&h->pdev->dev, " Transport methods supported = 0x%x\n", | |
7c832835 | 3830 | readl(&(tb->TransportSupport))); |
b2a4a43d | 3831 | dev_dbg(&h->pdev->dev, " Transport methods active = 0x%x\n", |
7c832835 | 3832 | readl(&(tb->TransportActive))); |
b2a4a43d | 3833 | dev_dbg(&h->pdev->dev, " Requested transport Method = 0x%x\n", |
7c832835 | 3834 | readl(&(tb->HostWrite.TransportRequest))); |
b2a4a43d | 3835 | dev_dbg(&h->pdev->dev, " Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 3836 | readl(&(tb->HostWrite.CoalIntDelay))); |
b2a4a43d | 3837 | dev_dbg(&h->pdev->dev, " Coalesce Interrupt Count = 0x%x\n", |
7c832835 | 3838 | readl(&(tb->HostWrite.CoalIntCount))); |
b2a4a43d | 3839 | dev_dbg(&h->pdev->dev, " Max outstanding commands = 0x%d\n", |
7c832835 | 3840 | readl(&(tb->CmdsOutMax))); |
b2a4a43d SC |
3841 | dev_dbg(&h->pdev->dev, " Bus Types = 0x%x\n", |
3842 | readl(&(tb->BusTypes))); | |
7c832835 | 3843 | for (i = 0; i < 16; i++) |
1da177e4 LT |
3844 | temp_name[i] = readb(&(tb->ServerName[i])); |
3845 | temp_name[16] = '\0'; | |
b2a4a43d SC |
3846 | dev_dbg(&h->pdev->dev, " Server Name = %s\n", temp_name); |
3847 | dev_dbg(&h->pdev->dev, " Heartbeat Counter = 0x%x\n\n\n", | |
3848 | readl(&(tb->HeartBeat))); | |
1da177e4 | 3849 | } |
1da177e4 | 3850 | |
7c832835 | 3851 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
3852 | { |
3853 | int i, offset, mem_type, bar_type; | |
7c832835 | 3854 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
3855 | return 0; |
3856 | offset = 0; | |
7c832835 BH |
3857 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
3858 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
3859 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
3860 | offset += 4; | |
3861 | else { | |
3862 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 3863 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 3864 | switch (mem_type) { |
7c832835 BH |
3865 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
3866 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
3867 | offset += 4; /* 32 bit */ | |
3868 | break; | |
3869 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
3870 | offset += 8; | |
3871 | break; | |
3872 | default: /* reserved in PCI 2.2 */ | |
b2a4a43d | 3873 | dev_warn(&pdev->dev, |
7c832835 BH |
3874 | "Base address is invalid\n"); |
3875 | return -1; | |
1da177e4 LT |
3876 | break; |
3877 | } | |
3878 | } | |
7c832835 BH |
3879 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
3880 | return i + 1; | |
1da177e4 LT |
3881 | } |
3882 | return -1; | |
3883 | } | |
3884 | ||
5e216153 MM |
3885 | /* Fill in bucket_map[], given nsgs (the max number of |
3886 | * scatter gather elements supported) and bucket[], | |
3887 | * which is an array of 8 integers. The bucket[] array | |
3888 | * contains 8 different DMA transfer sizes (in 16 | |
3889 | * byte increments) which the controller uses to fetch | |
3890 | * commands. This function fills in bucket_map[], which | |
3891 | * maps a given number of scatter gather elements to one of | |
3892 | * the 8 DMA transfer sizes. The point of it is to allow the | |
3893 | * controller to only do as much DMA as needed to fetch the | |
3894 | * command, with the DMA transfer size encoded in the lower | |
3895 | * bits of the command address. | |
3896 | */ | |
3897 | static void calc_bucket_map(int bucket[], int num_buckets, | |
3898 | int nsgs, int *bucket_map) | |
3899 | { | |
3900 | int i, j, b, size; | |
3901 | ||
3902 | /* even a command with 0 SGs requires 4 blocks */ | |
3903 | #define MINIMUM_TRANSFER_BLOCKS 4 | |
3904 | #define NUM_BUCKETS 8 | |
3905 | /* Note, bucket_map must have nsgs+1 entries. */ | |
3906 | for (i = 0; i <= nsgs; i++) { | |
3907 | /* Compute size of a command with i SG entries */ | |
3908 | size = i + MINIMUM_TRANSFER_BLOCKS; | |
3909 | b = num_buckets; /* Assume the biggest bucket */ | |
3910 | /* Find the bucket that is just big enough */ | |
3911 | for (j = 0; j < 8; j++) { | |
3912 | if (bucket[j] >= size) { | |
3913 | b = j; | |
3914 | break; | |
3915 | } | |
3916 | } | |
3917 | /* for a command with i SG entries, use bucket b. */ | |
3918 | bucket_map[i] = b; | |
3919 | } | |
3920 | } | |
3921 | ||
0f8a6a1e SC |
3922 | static void __devinit cciss_wait_for_mode_change_ack(ctlr_info_t *h) |
3923 | { | |
3924 | int i; | |
3925 | ||
3926 | /* under certain very rare conditions, this can take awhile. | |
3927 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3928 | * as we enter this code.) */ | |
3929 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { | |
3930 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) | |
3931 | break; | |
332c2f80 | 3932 | usleep_range(10000, 20000); |
0f8a6a1e SC |
3933 | } |
3934 | } | |
3935 | ||
0498cc2a SC |
3936 | static __devinit void cciss_enter_performant_mode(ctlr_info_t *h, |
3937 | u32 use_short_tags) | |
b9933135 SC |
3938 | { |
3939 | /* This is a bit complicated. There are 8 registers on | |
3940 | * the controller which we write to to tell it 8 different | |
3941 | * sizes of commands which there may be. It's a way of | |
3942 | * reducing the DMA done to fetch each command. Encoded into | |
3943 | * each command's tag are 3 bits which communicate to the controller | |
3944 | * which of the eight sizes that command fits within. The size of | |
3945 | * each command depends on how many scatter gather entries there are. | |
3946 | * Each SG entry requires 16 bytes. The eight registers are programmed | |
3947 | * with the number of 16-byte blocks a command of that size requires. | |
3948 | * The smallest command possible requires 5 such 16 byte blocks. | |
3949 | * the largest command possible requires MAXSGENTRIES + 4 16-byte | |
3950 | * blocks. Note, this only extends to the SG entries contained | |
3951 | * within the command block, and does not extend to chained blocks | |
3952 | * of SG elements. bft[] contains the eight values we write to | |
3953 | * the registers. They are not evenly distributed, but have more | |
3954 | * sizes for small commands, and fewer sizes for larger commands. | |
3955 | */ | |
5e216153 | 3956 | __u32 trans_offset; |
b9933135 | 3957 | int bft[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4}; |
5e216153 MM |
3958 | /* |
3959 | * 5 = 1 s/g entry or 4k | |
3960 | * 6 = 2 s/g entry or 8k | |
3961 | * 8 = 4 s/g entry or 16k | |
3962 | * 10 = 6 s/g entry or 24k | |
3963 | */ | |
5e216153 | 3964 | unsigned long register_value; |
5e216153 MM |
3965 | BUILD_BUG_ON(28 > MAXSGENTRIES + 4); |
3966 | ||
5e216153 MM |
3967 | h->reply_pool_wraparound = 1; /* spec: init to 1 */ |
3968 | ||
3969 | /* Controller spec: zero out this buffer. */ | |
3970 | memset(h->reply_pool, 0, h->max_commands * sizeof(__u64)); | |
3971 | h->reply_pool_head = h->reply_pool; | |
3972 | ||
3973 | trans_offset = readl(&(h->cfgtable->TransMethodOffset)); | |
3974 | calc_bucket_map(bft, ARRAY_SIZE(bft), h->maxsgentries, | |
3975 | h->blockFetchTable); | |
3976 | writel(bft[0], &h->transtable->BlockFetch0); | |
3977 | writel(bft[1], &h->transtable->BlockFetch1); | |
3978 | writel(bft[2], &h->transtable->BlockFetch2); | |
3979 | writel(bft[3], &h->transtable->BlockFetch3); | |
3980 | writel(bft[4], &h->transtable->BlockFetch4); | |
3981 | writel(bft[5], &h->transtable->BlockFetch5); | |
3982 | writel(bft[6], &h->transtable->BlockFetch6); | |
3983 | writel(bft[7], &h->transtable->BlockFetch7); | |
3984 | ||
3985 | /* size of controller ring buffer */ | |
3986 | writel(h->max_commands, &h->transtable->RepQSize); | |
3987 | writel(1, &h->transtable->RepQCount); | |
3988 | writel(0, &h->transtable->RepQCtrAddrLow32); | |
3989 | writel(0, &h->transtable->RepQCtrAddrHigh32); | |
3990 | writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32); | |
3991 | writel(0, &h->transtable->RepQAddr0High32); | |
0498cc2a | 3992 | writel(CFGTBL_Trans_Performant | use_short_tags, |
5e216153 MM |
3993 | &(h->cfgtable->HostWrite.TransportRequest)); |
3994 | ||
5e216153 | 3995 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
0f8a6a1e | 3996 | cciss_wait_for_mode_change_ack(h); |
5e216153 | 3997 | register_value = readl(&(h->cfgtable->TransportActive)); |
b9933135 | 3998 | if (!(register_value & CFGTBL_Trans_Performant)) |
b2a4a43d | 3999 | dev_warn(&h->pdev->dev, "cciss: unable to get board into" |
5e216153 | 4000 | " performant mode\n"); |
b9933135 SC |
4001 | } |
4002 | ||
4003 | static void __devinit cciss_put_controller_into_performant_mode(ctlr_info_t *h) | |
4004 | { | |
4005 | __u32 trans_support; | |
4006 | ||
13049537 JH |
4007 | if (cciss_simple_mode) |
4008 | return; | |
4009 | ||
b9933135 SC |
4010 | dev_dbg(&h->pdev->dev, "Trying to put board into Performant mode\n"); |
4011 | /* Attempt to put controller into performant mode if supported */ | |
4012 | /* Does board support performant mode? */ | |
4013 | trans_support = readl(&(h->cfgtable->TransportSupport)); | |
4014 | if (!(trans_support & PERFORMANT_MODE)) | |
4015 | return; | |
4016 | ||
b2a4a43d | 4017 | dev_dbg(&h->pdev->dev, "Placing controller into performant mode\n"); |
b9933135 SC |
4018 | /* Performant mode demands commands on a 32 byte boundary |
4019 | * pci_alloc_consistent aligns on page boundarys already. | |
4020 | * Just need to check if divisible by 32 | |
4021 | */ | |
4022 | if ((sizeof(CommandList_struct) % 32) != 0) { | |
b2a4a43d | 4023 | dev_warn(&h->pdev->dev, "%s %d %s\n", |
b9933135 SC |
4024 | "cciss info: command size[", |
4025 | (int)sizeof(CommandList_struct), | |
4026 | "] not divisible by 32, no performant mode..\n"); | |
5e216153 MM |
4027 | return; |
4028 | } | |
4029 | ||
b9933135 SC |
4030 | /* Performant mode ring buffer and supporting data structures */ |
4031 | h->reply_pool = (__u64 *)pci_alloc_consistent( | |
4032 | h->pdev, h->max_commands * sizeof(__u64), | |
4033 | &(h->reply_pool_dhandle)); | |
4034 | ||
4035 | /* Need a block fetch table for performant mode */ | |
4036 | h->blockFetchTable = kmalloc(((h->maxsgentries+1) * | |
4037 | sizeof(__u32)), GFP_KERNEL); | |
4038 | ||
4039 | if ((h->reply_pool == NULL) || (h->blockFetchTable == NULL)) | |
4040 | goto clean_up; | |
4041 | ||
0498cc2a SC |
4042 | cciss_enter_performant_mode(h, |
4043 | trans_support & CFGTBL_Trans_use_short_tags); | |
b9933135 | 4044 | |
5e216153 MM |
4045 | /* Change the access methods to the performant access methods */ |
4046 | h->access = SA5_performant_access; | |
b9933135 | 4047 | h->transMethod = CFGTBL_Trans_Performant; |
5e216153 MM |
4048 | |
4049 | return; | |
4050 | clean_up: | |
4051 | kfree(h->blockFetchTable); | |
4052 | if (h->reply_pool) | |
4053 | pci_free_consistent(h->pdev, | |
4054 | h->max_commands * sizeof(__u64), | |
4055 | h->reply_pool, | |
4056 | h->reply_pool_dhandle); | |
4057 | return; | |
4058 | ||
4059 | } /* cciss_put_controller_into_performant_mode */ | |
4060 | ||
fb86a35b MM |
4061 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
4062 | * controllers that are capable. If not, we use IO-APIC mode. | |
4063 | */ | |
4064 | ||
f70dba83 | 4065 | static void __devinit cciss_interrupt_mode(ctlr_info_t *h) |
fb86a35b MM |
4066 | { |
4067 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
4068 | int err; |
4069 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
4070 | {0, 2}, {0, 3} | |
4071 | }; | |
fb86a35b MM |
4072 | |
4073 | /* Some boards advertise MSI but don't really support it */ | |
f70dba83 SC |
4074 | if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) || |
4075 | (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11)) | |
fb86a35b MM |
4076 | goto default_int_mode; |
4077 | ||
f70dba83 SC |
4078 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) { |
4079 | err = pci_enable_msix(h->pdev, cciss_msix_entries, 4); | |
7c832835 | 4080 | if (!err) { |
f70dba83 SC |
4081 | h->intr[0] = cciss_msix_entries[0].vector; |
4082 | h->intr[1] = cciss_msix_entries[1].vector; | |
4083 | h->intr[2] = cciss_msix_entries[2].vector; | |
4084 | h->intr[3] = cciss_msix_entries[3].vector; | |
4085 | h->msix_vector = 1; | |
7c832835 BH |
4086 | return; |
4087 | } | |
4088 | if (err > 0) { | |
b2a4a43d SC |
4089 | dev_warn(&h->pdev->dev, |
4090 | "only %d MSI-X vectors available\n", err); | |
1ecb9c0f | 4091 | goto default_int_mode; |
7c832835 | 4092 | } else { |
b2a4a43d SC |
4093 | dev_warn(&h->pdev->dev, |
4094 | "MSI-X init failed %d\n", err); | |
1ecb9c0f | 4095 | goto default_int_mode; |
7c832835 BH |
4096 | } |
4097 | } | |
f70dba83 SC |
4098 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) { |
4099 | if (!pci_enable_msi(h->pdev)) | |
4100 | h->msi_vector = 1; | |
4101 | else | |
b2a4a43d | 4102 | dev_warn(&h->pdev->dev, "MSI init failed\n"); |
7c832835 | 4103 | } |
1ecb9c0f | 4104 | default_int_mode: |
7c832835 | 4105 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 4106 | /* if we get here we're going to use the default interrupt mode */ |
13049537 | 4107 | h->intr[h->intr_mode] = h->pdev->irq; |
fb86a35b MM |
4108 | return; |
4109 | } | |
4110 | ||
6539fa9b | 4111 | static int __devinit cciss_lookup_board_id(struct pci_dev *pdev, u32 *board_id) |
1da177e4 | 4112 | { |
6539fa9b SC |
4113 | int i; |
4114 | u32 subsystem_vendor_id, subsystem_device_id; | |
2ec24ff1 SC |
4115 | |
4116 | subsystem_vendor_id = pdev->subsystem_vendor; | |
4117 | subsystem_device_id = pdev->subsystem_device; | |
6539fa9b SC |
4118 | *board_id = ((subsystem_device_id << 16) & 0xffff0000) | |
4119 | subsystem_vendor_id; | |
2ec24ff1 | 4120 | |
4205df34 | 4121 | for (i = 0; i < ARRAY_SIZE(products); i++) |
6539fa9b SC |
4122 | if (*board_id == products[i].board_id) |
4123 | return i; | |
6539fa9b SC |
4124 | dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x, ignoring.\n", |
4125 | *board_id); | |
4126 | return -ENODEV; | |
4127 | } | |
1da177e4 | 4128 | |
dd9c426e SC |
4129 | static inline bool cciss_board_disabled(ctlr_info_t *h) |
4130 | { | |
4131 | u16 command; | |
1da177e4 | 4132 | |
dd9c426e SC |
4133 | (void) pci_read_config_word(h->pdev, PCI_COMMAND, &command); |
4134 | return ((command & PCI_COMMAND_MEMORY) == 0); | |
4135 | } | |
1da177e4 | 4136 | |
d474830d SC |
4137 | static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev, |
4138 | unsigned long *memory_bar) | |
4139 | { | |
4140 | int i; | |
4e570309 | 4141 | |
d474830d SC |
4142 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) |
4143 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { | |
4144 | /* addressing mode bits already removed */ | |
4145 | *memory_bar = pci_resource_start(pdev, i); | |
4146 | dev_dbg(&pdev->dev, "memory BAR = %lx\n", | |
4147 | *memory_bar); | |
4148 | return 0; | |
4149 | } | |
4150 | dev_warn(&pdev->dev, "no memory BAR found\n"); | |
4151 | return -ENODEV; | |
4152 | } | |
1da177e4 | 4153 | |
afa842fa SC |
4154 | static int __devinit cciss_wait_for_board_state(struct pci_dev *pdev, |
4155 | void __iomem *vaddr, int wait_for_ready) | |
4156 | #define BOARD_READY 1 | |
4157 | #define BOARD_NOT_READY 0 | |
e99ba136 | 4158 | { |
afa842fa | 4159 | int i, iterations; |
e99ba136 | 4160 | u32 scratchpad; |
1da177e4 | 4161 | |
afa842fa SC |
4162 | if (wait_for_ready) |
4163 | iterations = CCISS_BOARD_READY_ITERATIONS; | |
4164 | else | |
4165 | iterations = CCISS_BOARD_NOT_READY_ITERATIONS; | |
4166 | ||
4167 | for (i = 0; i < iterations; i++) { | |
4168 | scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET); | |
4169 | if (wait_for_ready) { | |
4170 | if (scratchpad == CCISS_FIRMWARE_READY) | |
4171 | return 0; | |
4172 | } else { | |
4173 | if (scratchpad != CCISS_FIRMWARE_READY) | |
4174 | return 0; | |
4175 | } | |
e99ba136 | 4176 | msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS); |
e1438581 | 4177 | } |
afa842fa | 4178 | dev_warn(&pdev->dev, "board not ready, timed out.\n"); |
e99ba136 SC |
4179 | return -ENODEV; |
4180 | } | |
e1438581 | 4181 | |
8e93bf6d SC |
4182 | static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev, |
4183 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, | |
4184 | u64 *cfg_offset) | |
4185 | { | |
4186 | *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); | |
4187 | *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); | |
4188 | *cfg_base_addr &= (u32) 0x0000ffff; | |
4189 | *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); | |
4190 | if (*cfg_base_addr_index == -1) { | |
4191 | dev_warn(&pdev->dev, "cannot find cfg_base_addr_index, " | |
4192 | "*cfg_base_addr = 0x%08x\n", *cfg_base_addr); | |
4193 | return -ENODEV; | |
4194 | } | |
4195 | return 0; | |
4196 | } | |
1da177e4 | 4197 | |
4809d098 SC |
4198 | static int __devinit cciss_find_cfgtables(ctlr_info_t *h) |
4199 | { | |
4200 | u64 cfg_offset; | |
4201 | u32 cfg_base_addr; | |
4202 | u64 cfg_base_addr_index; | |
4203 | u32 trans_offset; | |
8e93bf6d | 4204 | int rc; |
1da177e4 | 4205 | |
8e93bf6d SC |
4206 | rc = cciss_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, |
4207 | &cfg_base_addr_index, &cfg_offset); | |
4208 | if (rc) | |
4209 | return rc; | |
4809d098 | 4210 | h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, |
8e93bf6d | 4211 | cfg_base_addr_index) + cfg_offset, sizeof(h->cfgtable)); |
4809d098 SC |
4212 | if (!h->cfgtable) |
4213 | return -ENOMEM; | |
62710ae1 SC |
4214 | rc = write_driver_ver_to_cfgtable(h->cfgtable); |
4215 | if (rc) | |
4216 | return rc; | |
4809d098 | 4217 | /* Find performant mode table. */ |
8e93bf6d | 4218 | trans_offset = readl(&h->cfgtable->TransMethodOffset); |
4809d098 SC |
4219 | h->transtable = remap_pci_mem(pci_resource_start(h->pdev, |
4220 | cfg_base_addr_index)+cfg_offset+trans_offset, | |
4221 | sizeof(*h->transtable)); | |
4222 | if (!h->transtable) | |
4223 | return -ENOMEM; | |
4224 | return 0; | |
4225 | } | |
1da177e4 | 4226 | |
adfbc1ff SC |
4227 | static void __devinit cciss_get_max_perf_mode_cmds(struct ctlr_info *h) |
4228 | { | |
4229 | h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); | |
186fb9cf SC |
4230 | |
4231 | /* Limit commands in memory limited kdump scenario. */ | |
4232 | if (reset_devices && h->max_commands > 32) | |
4233 | h->max_commands = 32; | |
4234 | ||
adfbc1ff SC |
4235 | if (h->max_commands < 16) { |
4236 | dev_warn(&h->pdev->dev, "Controller reports " | |
4237 | "max supported commands of %d, an obvious lie. " | |
4238 | "Using 16. Ensure that firmware is up to date.\n", | |
4239 | h->max_commands); | |
4240 | h->max_commands = 16; | |
1da177e4 | 4241 | } |
adfbc1ff | 4242 | } |
1da177e4 | 4243 | |
afadbf4b SC |
4244 | /* Interrogate the hardware for some limits: |
4245 | * max commands, max SG elements without chaining, and with chaining, | |
4246 | * SG chain block size, etc. | |
4247 | */ | |
4248 | static void __devinit cciss_find_board_params(ctlr_info_t *h) | |
4249 | { | |
adfbc1ff | 4250 | cciss_get_max_perf_mode_cmds(h); |
8a4ec67b | 4251 | h->nr_cmds = h->max_commands - 4 - cciss_tape_cmds; |
afadbf4b | 4252 | h->maxsgentries = readl(&(h->cfgtable->MaxSGElements)); |
5c07a311 | 4253 | /* |
afadbf4b | 4254 | * Limit in-command s/g elements to 32 save dma'able memory. |
5c07a311 DB |
4255 | * Howvever spec says if 0, use 31 |
4256 | */ | |
afadbf4b SC |
4257 | h->max_cmd_sgentries = 31; |
4258 | if (h->maxsgentries > 512) { | |
4259 | h->max_cmd_sgentries = 32; | |
4260 | h->chainsize = h->maxsgentries - h->max_cmd_sgentries + 1; | |
4261 | h->maxsgentries--; /* save one for chain pointer */ | |
5c07a311 | 4262 | } else { |
afadbf4b SC |
4263 | h->maxsgentries = 31; /* default to traditional values */ |
4264 | h->chainsize = 0; | |
5c07a311 | 4265 | } |
afadbf4b | 4266 | } |
5c07a311 | 4267 | |
501b92cd SC |
4268 | static inline bool CISS_signature_present(ctlr_info_t *h) |
4269 | { | |
d48c152a | 4270 | if (!check_signature(h->cfgtable->Signature, "CISS", 4)) { |
501b92cd SC |
4271 | dev_warn(&h->pdev->dev, "not a valid CISS config table\n"); |
4272 | return false; | |
1da177e4 | 4273 | } |
501b92cd SC |
4274 | return true; |
4275 | } | |
4276 | ||
322e304c SC |
4277 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
4278 | static inline void cciss_enable_scsi_prefetch(ctlr_info_t *h) | |
4279 | { | |
1da177e4 | 4280 | #ifdef CONFIG_X86 |
322e304c SC |
4281 | u32 prefetch; |
4282 | ||
4283 | prefetch = readl(&(h->cfgtable->SCSI_Prefetch)); | |
4284 | prefetch |= 0x100; | |
4285 | writel(prefetch, &(h->cfgtable->SCSI_Prefetch)); | |
1da177e4 | 4286 | #endif |
322e304c | 4287 | } |
1da177e4 | 4288 | |
bfd63ee5 SC |
4289 | /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result |
4290 | * in a prefetch beyond physical memory. | |
4291 | */ | |
4292 | static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t *h) | |
4293 | { | |
4294 | u32 dma_prefetch; | |
4295 | __u32 dma_refetch; | |
4296 | ||
4297 | if (h->board_id != 0x3225103C) | |
4298 | return; | |
4299 | dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); | |
4300 | dma_prefetch |= 0x8000; | |
4301 | writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); | |
4302 | pci_read_config_dword(h->pdev, PCI_COMMAND_PARITY, &dma_refetch); | |
4303 | dma_refetch |= 0x1; | |
4304 | pci_write_config_dword(h->pdev, PCI_COMMAND_PARITY, dma_refetch); | |
4305 | } | |
4306 | ||
f70dba83 | 4307 | static int __devinit cciss_pci_init(ctlr_info_t *h) |
6539fa9b | 4308 | { |
4809d098 | 4309 | int prod_index, err; |
6539fa9b | 4310 | |
f70dba83 | 4311 | prod_index = cciss_lookup_board_id(h->pdev, &h->board_id); |
6539fa9b | 4312 | if (prod_index < 0) |
2ec24ff1 | 4313 | return -ENODEV; |
f70dba83 SC |
4314 | h->product_name = products[prod_index].product_name; |
4315 | h->access = *(products[prod_index].access); | |
1da177e4 | 4316 | |
f70dba83 | 4317 | if (cciss_board_disabled(h)) { |
b2a4a43d | 4318 | dev_warn(&h->pdev->dev, "controller appears to be disabled\n"); |
c33ac89b | 4319 | return -ENODEV; |
1da177e4 | 4320 | } |
19373358 MG |
4321 | |
4322 | pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S | | |
4323 | PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM); | |
4324 | ||
f70dba83 | 4325 | err = pci_enable_device(h->pdev); |
7c832835 | 4326 | if (err) { |
b2a4a43d | 4327 | dev_warn(&h->pdev->dev, "Unable to Enable PCI device\n"); |
c33ac89b | 4328 | return err; |
f92e2f5f MM |
4329 | } |
4330 | ||
f70dba83 | 4331 | err = pci_request_regions(h->pdev, "cciss"); |
4e570309 | 4332 | if (err) { |
b2a4a43d SC |
4333 | dev_warn(&h->pdev->dev, |
4334 | "Cannot obtain PCI resources, aborting\n"); | |
872225ca | 4335 | return err; |
4e570309 | 4336 | } |
1da177e4 | 4337 | |
b2a4a43d SC |
4338 | dev_dbg(&h->pdev->dev, "irq = %x\n", h->pdev->irq); |
4339 | dev_dbg(&h->pdev->dev, "board_id = %x\n", h->board_id); | |
1da177e4 | 4340 | |
fb86a35b MM |
4341 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
4342 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
4343 | */ | |
f70dba83 SC |
4344 | cciss_interrupt_mode(h); |
4345 | err = cciss_pci_find_memory_BAR(h->pdev, &h->paddr); | |
d474830d | 4346 | if (err) |
e1438581 | 4347 | goto err_out_free_res; |
f70dba83 SC |
4348 | h->vaddr = remap_pci_mem(h->paddr, 0x250); |
4349 | if (!h->vaddr) { | |
da550321 SC |
4350 | err = -ENOMEM; |
4351 | goto err_out_free_res; | |
7c832835 | 4352 | } |
afa842fa | 4353 | err = cciss_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); |
e99ba136 | 4354 | if (err) |
4e570309 | 4355 | goto err_out_free_res; |
f70dba83 | 4356 | err = cciss_find_cfgtables(h); |
4809d098 | 4357 | if (err) |
4e570309 | 4358 | goto err_out_free_res; |
b2a4a43d | 4359 | print_cfg_table(h); |
f70dba83 | 4360 | cciss_find_board_params(h); |
1da177e4 | 4361 | |
f70dba83 | 4362 | if (!CISS_signature_present(h)) { |
c33ac89b | 4363 | err = -ENODEV; |
4e570309 | 4364 | goto err_out_free_res; |
1da177e4 | 4365 | } |
f70dba83 SC |
4366 | cciss_enable_scsi_prefetch(h); |
4367 | cciss_p600_dma_prefetch_quirk(h); | |
13049537 JH |
4368 | err = cciss_enter_simple_mode(h); |
4369 | if (err) | |
4370 | goto err_out_free_res; | |
f70dba83 | 4371 | cciss_put_controller_into_performant_mode(h); |
1da177e4 LT |
4372 | return 0; |
4373 | ||
5faad620 | 4374 | err_out_free_res: |
872225ca MM |
4375 | /* |
4376 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4377 | * Smart Array controllers that pci_enable_device does not undo | |
4378 | */ | |
f70dba83 SC |
4379 | if (h->transtable) |
4380 | iounmap(h->transtable); | |
4381 | if (h->cfgtable) | |
4382 | iounmap(h->cfgtable); | |
4383 | if (h->vaddr) | |
4384 | iounmap(h->vaddr); | |
4385 | pci_release_regions(h->pdev); | |
c33ac89b | 4386 | return err; |
1da177e4 LT |
4387 | } |
4388 | ||
6ae5ce8e MM |
4389 | /* Function to find the first free pointer into our hba[] array |
4390 | * Returns -1 if no free entries are left. | |
7c832835 | 4391 | */ |
b2a4a43d | 4392 | static int alloc_cciss_hba(struct pci_dev *pdev) |
1da177e4 | 4393 | { |
799202cb | 4394 | int i; |
1da177e4 | 4395 | |
7c832835 | 4396 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 | 4397 | if (!hba[i]) { |
f70dba83 | 4398 | ctlr_info_t *h; |
f2912a12 | 4399 | |
f70dba83 SC |
4400 | h = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
4401 | if (!h) | |
1da177e4 | 4402 | goto Enomem; |
f70dba83 | 4403 | hba[i] = h; |
1da177e4 LT |
4404 | return i; |
4405 | } | |
4406 | } | |
b2a4a43d | 4407 | dev_warn(&pdev->dev, "This driver supports a maximum" |
7c832835 | 4408 | " of %d controllers.\n", MAX_CTLR); |
799202cb MM |
4409 | return -1; |
4410 | Enomem: | |
b2a4a43d | 4411 | dev_warn(&pdev->dev, "out of memory.\n"); |
1da177e4 LT |
4412 | return -1; |
4413 | } | |
4414 | ||
f70dba83 | 4415 | static void free_hba(ctlr_info_t *h) |
1da177e4 | 4416 | { |
2c935593 | 4417 | int i; |
1da177e4 | 4418 | |
f70dba83 | 4419 | hba[h->ctlr] = NULL; |
2c935593 SC |
4420 | for (i = 0; i < h->highest_lun + 1; i++) |
4421 | if (h->gendisk[i] != NULL) | |
4422 | put_disk(h->gendisk[i]); | |
4423 | kfree(h); | |
1da177e4 LT |
4424 | } |
4425 | ||
82eb03cf CC |
4426 | /* Send a message CDB to the firmware. */ |
4427 | static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) | |
4428 | { | |
4429 | typedef struct { | |
4430 | CommandListHeader_struct CommandHeader; | |
4431 | RequestBlock_struct Request; | |
4432 | ErrDescriptor_struct ErrorDescriptor; | |
4433 | } Command; | |
4434 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); | |
4435 | Command *cmd; | |
4436 | dma_addr_t paddr64; | |
4437 | uint32_t paddr32, tag; | |
4438 | void __iomem *vaddr; | |
4439 | int i, err; | |
4440 | ||
4441 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
4442 | if (vaddr == NULL) | |
4443 | return -ENOMEM; | |
4444 | ||
4445 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the | |
4446 | CCISS commands, so they must be allocated from the lower 4GiB of | |
4447 | memory. */ | |
e930438c | 4448 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
82eb03cf CC |
4449 | if (err) { |
4450 | iounmap(vaddr); | |
4451 | return -ENOMEM; | |
4452 | } | |
4453 | ||
4454 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); | |
4455 | if (cmd == NULL) { | |
4456 | iounmap(vaddr); | |
4457 | return -ENOMEM; | |
4458 | } | |
4459 | ||
4460 | /* This must fit, because of the 32-bit consistent DMA mask. Also, | |
4461 | although there's no guarantee, we assume that the address is at | |
4462 | least 4-byte aligned (most likely, it's page-aligned). */ | |
4463 | paddr32 = paddr64; | |
4464 | ||
4465 | cmd->CommandHeader.ReplyQueue = 0; | |
4466 | cmd->CommandHeader.SGList = 0; | |
4467 | cmd->CommandHeader.SGTotal = 0; | |
4468 | cmd->CommandHeader.Tag.lower = paddr32; | |
4469 | cmd->CommandHeader.Tag.upper = 0; | |
4470 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); | |
4471 | ||
4472 | cmd->Request.CDBLen = 16; | |
4473 | cmd->Request.Type.Type = TYPE_MSG; | |
4474 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; | |
4475 | cmd->Request.Type.Direction = XFER_NONE; | |
4476 | cmd->Request.Timeout = 0; /* Don't time out */ | |
4477 | cmd->Request.CDB[0] = opcode; | |
4478 | cmd->Request.CDB[1] = type; | |
4479 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ | |
4480 | ||
4481 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); | |
4482 | cmd->ErrorDescriptor.Addr.upper = 0; | |
4483 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); | |
4484 | ||
4485 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); | |
4486 | ||
4487 | for (i = 0; i < 10; i++) { | |
4488 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); | |
4489 | if ((tag & ~3) == paddr32) | |
4490 | break; | |
3e28601f | 4491 | msleep(CCISS_POST_RESET_NOOP_TIMEOUT_MSECS); |
82eb03cf CC |
4492 | } |
4493 | ||
4494 | iounmap(vaddr); | |
4495 | ||
4496 | /* we leak the DMA buffer here ... no choice since the controller could | |
4497 | still complete the command. */ | |
4498 | if (i == 10) { | |
b2a4a43d SC |
4499 | dev_err(&pdev->dev, |
4500 | "controller message %02x:%02x timed out\n", | |
82eb03cf CC |
4501 | opcode, type); |
4502 | return -ETIMEDOUT; | |
4503 | } | |
4504 | ||
4505 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); | |
4506 | ||
4507 | if (tag & 2) { | |
b2a4a43d | 4508 | dev_err(&pdev->dev, "controller message %02x:%02x failed\n", |
82eb03cf CC |
4509 | opcode, type); |
4510 | return -EIO; | |
4511 | } | |
4512 | ||
b2a4a43d | 4513 | dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", |
82eb03cf CC |
4514 | opcode, type); |
4515 | return 0; | |
4516 | } | |
4517 | ||
82eb03cf CC |
4518 | #define cciss_noop(p) cciss_message(p, 3, 0) |
4519 | ||
a6528d01 | 4520 | static int cciss_controller_hard_reset(struct pci_dev *pdev, |
bf2e2e6b | 4521 | void * __iomem vaddr, u32 use_doorbell) |
82eb03cf | 4522 | { |
a6528d01 SC |
4523 | u16 pmcsr; |
4524 | int pos; | |
82eb03cf | 4525 | |
a6528d01 SC |
4526 | if (use_doorbell) { |
4527 | /* For everything after the P600, the PCI power state method | |
4528 | * of resetting the controller doesn't work, so we have this | |
4529 | * other way using the doorbell register. | |
4530 | */ | |
4531 | dev_info(&pdev->dev, "using doorbell to reset controller\n"); | |
bf2e2e6b | 4532 | writel(use_doorbell, vaddr + SA5_DOORBELL); |
a6528d01 SC |
4533 | } else { /* Try to do it the PCI power state way */ |
4534 | ||
4535 | /* Quoting from the Open CISS Specification: "The Power | |
4536 | * Management Control/Status Register (CSR) controls the power | |
4537 | * state of the device. The normal operating state is D0, | |
4538 | * CSR=00h. The software off state is D3, CSR=03h. To reset | |
4539 | * the controller, place the interface device in D3 then to D0, | |
4540 | * this causes a secondary PCI reset which will reset the | |
4541 | * controller." */ | |
4542 | ||
4543 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); | |
4544 | if (pos == 0) { | |
4545 | dev_err(&pdev->dev, | |
4546 | "cciss_controller_hard_reset: " | |
4547 | "PCI PM not supported\n"); | |
4548 | return -ENODEV; | |
4549 | } | |
4550 | dev_info(&pdev->dev, "using PCI PM to reset controller\n"); | |
4551 | /* enter the D3hot power management state */ | |
4552 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); | |
4553 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4554 | pmcsr |= PCI_D3hot; | |
4555 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
82eb03cf | 4556 | |
a6528d01 | 4557 | msleep(500); |
82eb03cf | 4558 | |
a6528d01 SC |
4559 | /* enter the D0 power management state */ |
4560 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4561 | pmcsr |= PCI_D0; | |
4562 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
ab5dbebe MM |
4563 | |
4564 | /* | |
4565 | * The P600 requires a small delay when changing states. | |
4566 | * Otherwise we may think the board did not reset and we bail. | |
4567 | * This for kdump only and is particular to the P600. | |
4568 | */ | |
4569 | msleep(500); | |
a6528d01 SC |
4570 | } |
4571 | return 0; | |
4572 | } | |
82eb03cf | 4573 | |
62710ae1 SC |
4574 | static __devinit void init_driver_version(char *driver_version, int len) |
4575 | { | |
4576 | memset(driver_version, 0, len); | |
4577 | strncpy(driver_version, "cciss " DRIVER_NAME, len - 1); | |
4578 | } | |
4579 | ||
4580 | static __devinit int write_driver_ver_to_cfgtable( | |
4581 | CfgTable_struct __iomem *cfgtable) | |
4582 | { | |
4583 | char *driver_version; | |
4584 | int i, size = sizeof(cfgtable->driver_version); | |
4585 | ||
4586 | driver_version = kmalloc(size, GFP_KERNEL); | |
4587 | if (!driver_version) | |
4588 | return -ENOMEM; | |
4589 | ||
4590 | init_driver_version(driver_version, size); | |
4591 | for (i = 0; i < size; i++) | |
4592 | writeb(driver_version[i], &cfgtable->driver_version[i]); | |
4593 | kfree(driver_version); | |
4594 | return 0; | |
4595 | } | |
4596 | ||
4597 | static __devinit void read_driver_ver_from_cfgtable( | |
4598 | CfgTable_struct __iomem *cfgtable, unsigned char *driver_ver) | |
4599 | { | |
4600 | int i; | |
4601 | ||
4602 | for (i = 0; i < sizeof(cfgtable->driver_version); i++) | |
4603 | driver_ver[i] = readb(&cfgtable->driver_version[i]); | |
4604 | } | |
4605 | ||
4606 | static __devinit int controller_reset_failed( | |
4607 | CfgTable_struct __iomem *cfgtable) | |
4608 | { | |
4609 | ||
4610 | char *driver_ver, *old_driver_ver; | |
4611 | int rc, size = sizeof(cfgtable->driver_version); | |
4612 | ||
4613 | old_driver_ver = kmalloc(2 * size, GFP_KERNEL); | |
4614 | if (!old_driver_ver) | |
4615 | return -ENOMEM; | |
4616 | driver_ver = old_driver_ver + size; | |
4617 | ||
4618 | /* After a reset, the 32 bytes of "driver version" in the cfgtable | |
4619 | * should have been changed, otherwise we know the reset failed. | |
4620 | */ | |
4621 | init_driver_version(old_driver_ver, size); | |
4622 | read_driver_ver_from_cfgtable(cfgtable, driver_ver); | |
4623 | rc = !memcmp(driver_ver, old_driver_ver, size); | |
4624 | kfree(old_driver_ver); | |
4625 | return rc; | |
4626 | } | |
4627 | ||
a6528d01 SC |
4628 | /* This does a hard reset of the controller using PCI power management |
4629 | * states or using the doorbell register. */ | |
4630 | static __devinit int cciss_kdump_hard_reset_controller(struct pci_dev *pdev) | |
4631 | { | |
a6528d01 SC |
4632 | u64 cfg_offset; |
4633 | u32 cfg_base_addr; | |
4634 | u64 cfg_base_addr_index; | |
4635 | void __iomem *vaddr; | |
4636 | unsigned long paddr; | |
62710ae1 | 4637 | u32 misc_fw_support; |
f442e64b | 4638 | int rc; |
a6528d01 | 4639 | CfgTable_struct __iomem *cfgtable; |
bf2e2e6b | 4640 | u32 use_doorbell; |
058a0f9f | 4641 | u32 board_id; |
f442e64b | 4642 | u16 command_register; |
a6528d01 SC |
4643 | |
4644 | /* For controllers as old a the p600, this is very nearly | |
4645 | * the same thing as | |
4646 | * | |
4647 | * pci_save_state(pci_dev); | |
4648 | * pci_set_power_state(pci_dev, PCI_D3hot); | |
4649 | * pci_set_power_state(pci_dev, PCI_D0); | |
4650 | * pci_restore_state(pci_dev); | |
4651 | * | |
a6528d01 SC |
4652 | * For controllers newer than the P600, the pci power state |
4653 | * method of resetting doesn't work so we have another way | |
4654 | * using the doorbell register. | |
4655 | */ | |
82eb03cf | 4656 | |
058a0f9f SC |
4657 | /* Exclude 640x boards. These are two pci devices in one slot |
4658 | * which share a battery backed cache module. One controls the | |
4659 | * cache, the other accesses the cache through the one that controls | |
4660 | * it. If we reset the one controlling the cache, the other will | |
4661 | * likely not be happy. Just forbid resetting this conjoined mess. | |
4662 | */ | |
4663 | cciss_lookup_board_id(pdev, &board_id); | |
ec52d5f1 | 4664 | if (!ctlr_is_resettable(board_id)) { |
058a0f9f SC |
4665 | dev_warn(&pdev->dev, "Cannot reset Smart Array 640x " |
4666 | "due to shared cache module."); | |
82eb03cf CC |
4667 | return -ENODEV; |
4668 | } | |
4669 | ||
ec52d5f1 SC |
4670 | /* if controller is soft- but not hard resettable... */ |
4671 | if (!ctlr_is_hard_resettable(board_id)) | |
4672 | return -ENOTSUPP; /* try soft reset later. */ | |
4673 | ||
f442e64b SC |
4674 | /* Save the PCI command register */ |
4675 | pci_read_config_word(pdev, 4, &command_register); | |
4676 | /* Turn the board off. This is so that later pci_restore_state() | |
4677 | * won't turn the board on before the rest of config space is ready. | |
4678 | */ | |
4679 | pci_disable_device(pdev); | |
4680 | pci_save_state(pdev); | |
82eb03cf | 4681 | |
a6528d01 SC |
4682 | /* find the first memory BAR, so we can find the cfg table */ |
4683 | rc = cciss_pci_find_memory_BAR(pdev, &paddr); | |
4684 | if (rc) | |
4685 | return rc; | |
4686 | vaddr = remap_pci_mem(paddr, 0x250); | |
4687 | if (!vaddr) | |
4688 | return -ENOMEM; | |
82eb03cf | 4689 | |
a6528d01 SC |
4690 | /* find cfgtable in order to check if reset via doorbell is supported */ |
4691 | rc = cciss_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, | |
4692 | &cfg_base_addr_index, &cfg_offset); | |
4693 | if (rc) | |
4694 | goto unmap_vaddr; | |
4695 | cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
4696 | cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); | |
4697 | if (!cfgtable) { | |
4698 | rc = -ENOMEM; | |
4699 | goto unmap_vaddr; | |
4700 | } | |
62710ae1 SC |
4701 | rc = write_driver_ver_to_cfgtable(cfgtable); |
4702 | if (rc) | |
4703 | goto unmap_vaddr; | |
82eb03cf | 4704 | |
bf2e2e6b SC |
4705 | /* If reset via doorbell register is supported, use that. |
4706 | * There are two such methods. Favor the newest method. | |
75230ff2 | 4707 | */ |
bf2e2e6b SC |
4708 | misc_fw_support = readl(&cfgtable->misc_fw_support); |
4709 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2; | |
4710 | if (use_doorbell) { | |
4711 | use_doorbell = DOORBELL_CTLR_RESET2; | |
4712 | } else { | |
4713 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; | |
063d2cf7 SC |
4714 | if (use_doorbell) { |
4715 | dev_warn(&pdev->dev, "Controller claims that " | |
4716 | "'Bit 2 doorbell reset' is " | |
4717 | "supported, but not 'bit 5 doorbell reset'. " | |
4718 | "Firmware update is recommended.\n"); | |
4719 | rc = -ENOTSUPP; /* use the soft reset */ | |
4720 | goto unmap_cfgtable; | |
4721 | } | |
bf2e2e6b | 4722 | } |
75230ff2 | 4723 | |
a6528d01 SC |
4724 | rc = cciss_controller_hard_reset(pdev, vaddr, use_doorbell); |
4725 | if (rc) | |
4726 | goto unmap_cfgtable; | |
f442e64b SC |
4727 | pci_restore_state(pdev); |
4728 | rc = pci_enable_device(pdev); | |
4729 | if (rc) { | |
4730 | dev_warn(&pdev->dev, "failed to enable device.\n"); | |
4731 | goto unmap_cfgtable; | |
82eb03cf | 4732 | } |
f442e64b | 4733 | pci_write_config_word(pdev, 4, command_register); |
82eb03cf | 4734 | |
a6528d01 SC |
4735 | /* Some devices (notably the HP Smart Array 5i Controller) |
4736 | need a little pause here */ | |
4737 | msleep(CCISS_POST_RESET_PAUSE_MSECS); | |
4738 | ||
afa842fa | 4739 | /* Wait for board to become not ready, then ready. */ |
59ec86bb | 4740 | dev_info(&pdev->dev, "Waiting for board to reset.\n"); |
afa842fa | 4741 | rc = cciss_wait_for_board_state(pdev, vaddr, BOARD_NOT_READY); |
5afe2781 SC |
4742 | if (rc) { |
4743 | dev_warn(&pdev->dev, "Failed waiting for board to hard reset." | |
4744 | " Will try soft reset.\n"); | |
4745 | rc = -ENOTSUPP; /* Not expected, but try soft reset later */ | |
4746 | goto unmap_cfgtable; | |
4747 | } | |
afa842fa SC |
4748 | rc = cciss_wait_for_board_state(pdev, vaddr, BOARD_READY); |
4749 | if (rc) { | |
4750 | dev_warn(&pdev->dev, | |
5afe2781 SC |
4751 | "failed waiting for board to become ready " |
4752 | "after hard reset\n"); | |
afa842fa SC |
4753 | goto unmap_cfgtable; |
4754 | } | |
afa842fa | 4755 | |
62710ae1 SC |
4756 | rc = controller_reset_failed(vaddr); |
4757 | if (rc < 0) | |
4758 | goto unmap_cfgtable; | |
4759 | if (rc) { | |
5afe2781 SC |
4760 | dev_warn(&pdev->dev, "Unable to successfully hard reset " |
4761 | "controller. Will try soft reset.\n"); | |
4762 | rc = -ENOTSUPP; /* Not expected, but try soft reset later */ | |
62710ae1 | 4763 | } else { |
5afe2781 | 4764 | dev_info(&pdev->dev, "Board ready after hard reset.\n"); |
a6528d01 SC |
4765 | } |
4766 | ||
4767 | unmap_cfgtable: | |
4768 | iounmap(cfgtable); | |
4769 | ||
4770 | unmap_vaddr: | |
4771 | iounmap(vaddr); | |
4772 | return rc; | |
82eb03cf CC |
4773 | } |
4774 | ||
83123cb1 SC |
4775 | static __devinit int cciss_init_reset_devices(struct pci_dev *pdev) |
4776 | { | |
a6528d01 | 4777 | int rc, i; |
83123cb1 SC |
4778 | |
4779 | if (!reset_devices) | |
4780 | return 0; | |
4781 | ||
a6528d01 SC |
4782 | /* Reset the controller with a PCI power-cycle or via doorbell */ |
4783 | rc = cciss_kdump_hard_reset_controller(pdev); | |
83123cb1 | 4784 | |
a6528d01 SC |
4785 | /* -ENOTSUPP here means we cannot reset the controller |
4786 | * but it's already (and still) up and running in | |
058a0f9f SC |
4787 | * "performant mode". Or, it might be 640x, which can't reset |
4788 | * due to concerns about shared bbwc between 6402/6404 pair. | |
a6528d01 SC |
4789 | */ |
4790 | if (rc == -ENOTSUPP) | |
5afe2781 | 4791 | return rc; /* just try to do the kdump anyhow. */ |
a6528d01 SC |
4792 | if (rc) |
4793 | return -ENODEV; | |
83123cb1 SC |
4794 | |
4795 | /* Now try to get the controller to respond to a no-op */ | |
59ec86bb | 4796 | dev_warn(&pdev->dev, "Waiting for controller to respond to no-op\n"); |
83123cb1 SC |
4797 | for (i = 0; i < CCISS_POST_RESET_NOOP_RETRIES; i++) { |
4798 | if (cciss_noop(pdev) == 0) | |
4799 | break; | |
4800 | else | |
4801 | dev_warn(&pdev->dev, "no-op failed%s\n", | |
4802 | (i < CCISS_POST_RESET_NOOP_RETRIES - 1 ? | |
4803 | "; re-trying" : "")); | |
4804 | msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS); | |
4805 | } | |
82eb03cf CC |
4806 | return 0; |
4807 | } | |
4808 | ||
54dae343 SC |
4809 | static __devinit int cciss_allocate_cmd_pool(ctlr_info_t *h) |
4810 | { | |
1f118bc4 | 4811 | h->cmd_pool_bits = kmalloc(BITS_TO_LONGS(h->nr_cmds) * |
54dae343 SC |
4812 | sizeof(unsigned long), GFP_KERNEL); |
4813 | h->cmd_pool = pci_alloc_consistent(h->pdev, | |
4814 | h->nr_cmds * sizeof(CommandList_struct), | |
4815 | &(h->cmd_pool_dhandle)); | |
4816 | h->errinfo_pool = pci_alloc_consistent(h->pdev, | |
4817 | h->nr_cmds * sizeof(ErrorInfo_struct), | |
4818 | &(h->errinfo_pool_dhandle)); | |
4819 | if ((h->cmd_pool_bits == NULL) | |
4820 | || (h->cmd_pool == NULL) | |
4821 | || (h->errinfo_pool == NULL)) { | |
4822 | dev_err(&h->pdev->dev, "out of memory"); | |
4823 | return -ENOMEM; | |
4824 | } | |
4825 | return 0; | |
4826 | } | |
4827 | ||
abf7966e SC |
4828 | static __devinit int cciss_allocate_scatterlists(ctlr_info_t *h) |
4829 | { | |
4830 | int i; | |
4831 | ||
4832 | /* zero it, so that on free we need not know how many were alloc'ed */ | |
4833 | h->scatter_list = kzalloc(h->max_commands * | |
4834 | sizeof(struct scatterlist *), GFP_KERNEL); | |
4835 | if (!h->scatter_list) | |
4836 | return -ENOMEM; | |
4837 | ||
4838 | for (i = 0; i < h->nr_cmds; i++) { | |
4839 | h->scatter_list[i] = kmalloc(sizeof(struct scatterlist) * | |
4840 | h->maxsgentries, GFP_KERNEL); | |
4841 | if (h->scatter_list[i] == NULL) { | |
4842 | dev_err(&h->pdev->dev, "could not allocate " | |
4843 | "s/g lists\n"); | |
4844 | return -ENOMEM; | |
4845 | } | |
4846 | } | |
4847 | return 0; | |
4848 | } | |
4849 | ||
4850 | static void cciss_free_scatterlists(ctlr_info_t *h) | |
4851 | { | |
4852 | int i; | |
4853 | ||
4854 | if (h->scatter_list) { | |
4855 | for (i = 0; i < h->nr_cmds; i++) | |
4856 | kfree(h->scatter_list[i]); | |
4857 | kfree(h->scatter_list); | |
4858 | } | |
4859 | } | |
4860 | ||
54dae343 SC |
4861 | static void cciss_free_cmd_pool(ctlr_info_t *h) |
4862 | { | |
4863 | kfree(h->cmd_pool_bits); | |
4864 | if (h->cmd_pool) | |
4865 | pci_free_consistent(h->pdev, | |
4866 | h->nr_cmds * sizeof(CommandList_struct), | |
4867 | h->cmd_pool, h->cmd_pool_dhandle); | |
4868 | if (h->errinfo_pool) | |
4869 | pci_free_consistent(h->pdev, | |
4870 | h->nr_cmds * sizeof(ErrorInfo_struct), | |
4871 | h->errinfo_pool, h->errinfo_pool_dhandle); | |
4872 | } | |
4873 | ||
2b48085f SC |
4874 | static int cciss_request_irq(ctlr_info_t *h, |
4875 | irqreturn_t (*msixhandler)(int, void *), | |
4876 | irqreturn_t (*intxhandler)(int, void *)) | |
4877 | { | |
4878 | if (h->msix_vector || h->msi_vector) { | |
13049537 | 4879 | if (!request_irq(h->intr[h->intr_mode], msixhandler, |
6225da48 | 4880 | 0, h->devname, h)) |
2b48085f SC |
4881 | return 0; |
4882 | dev_err(&h->pdev->dev, "Unable to get msi irq %d" | |
13049537 | 4883 | " for %s\n", h->intr[h->intr_mode], |
2b48085f SC |
4884 | h->devname); |
4885 | return -1; | |
4886 | } | |
4887 | ||
13049537 | 4888 | if (!request_irq(h->intr[h->intr_mode], intxhandler, |
6225da48 | 4889 | IRQF_SHARED, h->devname, h)) |
2b48085f SC |
4890 | return 0; |
4891 | dev_err(&h->pdev->dev, "Unable to get irq %d for %s\n", | |
13049537 | 4892 | h->intr[h->intr_mode], h->devname); |
2b48085f SC |
4893 | return -1; |
4894 | } | |
4895 | ||
5afe2781 SC |
4896 | static int __devinit cciss_kdump_soft_reset(ctlr_info_t *h) |
4897 | { | |
4898 | if (cciss_send_reset(h, CTLR_LUNID, CCISS_RESET_TYPE_CONTROLLER)) { | |
4899 | dev_warn(&h->pdev->dev, "Resetting array controller failed.\n"); | |
4900 | return -EIO; | |
4901 | } | |
4902 | ||
4903 | dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n"); | |
4904 | if (cciss_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY)) { | |
4905 | dev_warn(&h->pdev->dev, "Soft reset had no effect.\n"); | |
4906 | return -1; | |
4907 | } | |
4908 | ||
4909 | dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n"); | |
4910 | if (cciss_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY)) { | |
4911 | dev_warn(&h->pdev->dev, "Board failed to become ready " | |
4912 | "after soft reset.\n"); | |
4913 | return -1; | |
4914 | } | |
4915 | ||
4916 | return 0; | |
4917 | } | |
4918 | ||
4919 | static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t *h) | |
4920 | { | |
4921 | int ctlr = h->ctlr; | |
4922 | ||
13049537 | 4923 | free_irq(h->intr[h->intr_mode], h); |
5afe2781 SC |
4924 | #ifdef CONFIG_PCI_MSI |
4925 | if (h->msix_vector) | |
4926 | pci_disable_msix(h->pdev); | |
4927 | else if (h->msi_vector) | |
4928 | pci_disable_msi(h->pdev); | |
4929 | #endif /* CONFIG_PCI_MSI */ | |
4930 | cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds); | |
4931 | cciss_free_scatterlists(h); | |
4932 | cciss_free_cmd_pool(h); | |
4933 | kfree(h->blockFetchTable); | |
4934 | if (h->reply_pool) | |
4935 | pci_free_consistent(h->pdev, h->max_commands * sizeof(__u64), | |
4936 | h->reply_pool, h->reply_pool_dhandle); | |
4937 | if (h->transtable) | |
4938 | iounmap(h->transtable); | |
4939 | if (h->cfgtable) | |
4940 | iounmap(h->cfgtable); | |
4941 | if (h->vaddr) | |
4942 | iounmap(h->vaddr); | |
4943 | unregister_blkdev(h->major, h->devname); | |
4944 | cciss_destroy_hba_sysfs_entry(h); | |
4945 | pci_release_regions(h->pdev); | |
4946 | kfree(h); | |
4947 | hba[ctlr] = NULL; | |
4948 | } | |
4949 | ||
1da177e4 LT |
4950 | /* |
4951 | * This is it. Find all the controllers and register them. I really hate | |
4952 | * stealing all these major device numbers. | |
4953 | * returns the number of block devices registered. | |
4954 | */ | |
4955 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 4956 | const struct pci_device_id *ent) |
1da177e4 | 4957 | { |
1da177e4 | 4958 | int i; |
799202cb | 4959 | int j = 0; |
1da177e4 | 4960 | int rc; |
5afe2781 | 4961 | int try_soft_reset = 0; |
22bece00 | 4962 | int dac, return_code; |
212a5026 | 4963 | InquiryData_struct *inq_buff; |
f70dba83 | 4964 | ctlr_info_t *h; |
5afe2781 | 4965 | unsigned long flags; |
1da177e4 | 4966 | |
83123cb1 | 4967 | rc = cciss_init_reset_devices(pdev); |
5afe2781 SC |
4968 | if (rc) { |
4969 | if (rc != -ENOTSUPP) | |
4970 | return rc; | |
4971 | /* If the reset fails in a particular way (it has no way to do | |
4972 | * a proper hard reset, so returns -ENOTSUPP) we can try to do | |
4973 | * a soft reset once we get the controller configured up to the | |
4974 | * point that it can accept a command. | |
4975 | */ | |
4976 | try_soft_reset = 1; | |
4977 | rc = 0; | |
4978 | } | |
4979 | ||
4980 | reinit_after_soft_reset: | |
4981 | ||
b2a4a43d | 4982 | i = alloc_cciss_hba(pdev); |
7c832835 | 4983 | if (i < 0) |
e2019b58 | 4984 | return -1; |
1f8ef380 | 4985 | |
f70dba83 SC |
4986 | h = hba[i]; |
4987 | h->pdev = pdev; | |
4988 | h->busy_initializing = 1; | |
13049537 | 4989 | h->intr_mode = cciss_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT; |
e6e1ee93 JA |
4990 | INIT_LIST_HEAD(&h->cmpQ); |
4991 | INIT_LIST_HEAD(&h->reqQ); | |
f70dba83 | 4992 | mutex_init(&h->busy_shutting_down); |
1f8ef380 | 4993 | |
f70dba83 | 4994 | if (cciss_pci_init(h) != 0) |
2cfa948c | 4995 | goto clean_no_release_regions; |
1da177e4 | 4996 | |
f70dba83 SC |
4997 | sprintf(h->devname, "cciss%d", i); |
4998 | h->ctlr = i; | |
1da177e4 | 4999 | |
8a4ec67b SC |
5000 | if (cciss_tape_cmds < 2) |
5001 | cciss_tape_cmds = 2; | |
5002 | if (cciss_tape_cmds > 16) | |
5003 | cciss_tape_cmds = 16; | |
5004 | ||
f70dba83 | 5005 | init_completion(&h->scan_wait); |
b368c9dd | 5006 | |
f70dba83 | 5007 | if (cciss_create_hba_sysfs_entry(h)) |
7fe06326 AP |
5008 | goto clean0; |
5009 | ||
1da177e4 | 5010 | /* configure PCI DMA stuff */ |
6a35528a | 5011 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
40aabb58 | 5012 | dac = 1; |
284901a9 | 5013 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
40aabb58 | 5014 | dac = 0; |
1da177e4 | 5015 | else { |
b2a4a43d | 5016 | dev_err(&h->pdev->dev, "no suitable DMA available\n"); |
1da177e4 LT |
5017 | goto clean1; |
5018 | } | |
5019 | ||
5020 | /* | |
5021 | * register with the major number, or get a dynamic major number | |
5022 | * by passing 0 as argument. This is done for greater than | |
5023 | * 8 controller support. | |
5024 | */ | |
5025 | if (i < MAX_CTLR_ORIG) | |
f70dba83 SC |
5026 | h->major = COMPAQ_CISS_MAJOR + i; |
5027 | rc = register_blkdev(h->major, h->devname); | |
7c832835 | 5028 | if (rc == -EBUSY || rc == -EINVAL) { |
b2a4a43d SC |
5029 | dev_err(&h->pdev->dev, |
5030 | "Unable to get major number %d for %s " | |
f70dba83 | 5031 | "on hba %d\n", h->major, h->devname, i); |
1da177e4 | 5032 | goto clean1; |
7c832835 | 5033 | } else { |
1da177e4 | 5034 | if (i >= MAX_CTLR_ORIG) |
f70dba83 | 5035 | h->major = rc; |
1da177e4 LT |
5036 | } |
5037 | ||
5038 | /* make sure the board interrupts are off */ | |
f70dba83 | 5039 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
2b48085f SC |
5040 | rc = cciss_request_irq(h, do_cciss_msix_intr, do_cciss_intx); |
5041 | if (rc) | |
5042 | goto clean2; | |
40aabb58 | 5043 | |
b2a4a43d | 5044 | dev_info(&h->pdev->dev, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", |
f70dba83 | 5045 | h->devname, pdev->device, pci_name(pdev), |
13049537 | 5046 | h->intr[h->intr_mode], dac ? "" : " not"); |
7c832835 | 5047 | |
54dae343 | 5048 | if (cciss_allocate_cmd_pool(h)) |
1da177e4 | 5049 | goto clean4; |
5c07a311 | 5050 | |
abf7966e | 5051 | if (cciss_allocate_scatterlists(h)) |
4ee69851 DC |
5052 | goto clean4; |
5053 | ||
f70dba83 SC |
5054 | h->cmd_sg_list = cciss_allocate_sg_chain_blocks(h, |
5055 | h->chainsize, h->nr_cmds); | |
5056 | if (!h->cmd_sg_list && h->chainsize > 0) | |
5c07a311 | 5057 | goto clean4; |
5c07a311 | 5058 | |
f70dba83 | 5059 | spin_lock_init(&h->lock); |
1da177e4 | 5060 | |
7c832835 | 5061 | /* Initialize the pdev driver private data. |
f70dba83 SC |
5062 | have it point to h. */ |
5063 | pci_set_drvdata(pdev, h); | |
7c832835 BH |
5064 | /* command and error info recs zeroed out before |
5065 | they are used */ | |
1f118bc4 | 5066 | bitmap_zero(h->cmd_pool_bits, h->nr_cmds); |
1da177e4 | 5067 | |
f70dba83 SC |
5068 | h->num_luns = 0; |
5069 | h->highest_lun = -1; | |
6ae5ce8e | 5070 | for (j = 0; j < CISS_MAX_LUN; j++) { |
f70dba83 SC |
5071 | h->drv[j] = NULL; |
5072 | h->gendisk[j] = NULL; | |
6ae5ce8e | 5073 | } |
1da177e4 | 5074 | |
5afe2781 SC |
5075 | /* At this point, the controller is ready to take commands. |
5076 | * Now, if reset_devices and the hard reset didn't work, try | |
5077 | * the soft reset and see if that works. | |
5078 | */ | |
5079 | if (try_soft_reset) { | |
5080 | ||
5081 | /* This is kind of gross. We may or may not get a completion | |
5082 | * from the soft reset command, and if we do, then the value | |
5083 | * from the fifo may or may not be valid. So, we wait 10 secs | |
5084 | * after the reset throwing away any completions we get during | |
5085 | * that time. Unregister the interrupt handler and register | |
5086 | * fake ones to scoop up any residual completions. | |
5087 | */ | |
5088 | spin_lock_irqsave(&h->lock, flags); | |
5089 | h->access.set_intr_mask(h, CCISS_INTR_OFF); | |
5090 | spin_unlock_irqrestore(&h->lock, flags); | |
13049537 | 5091 | free_irq(h->intr[h->intr_mode], h); |
5afe2781 SC |
5092 | rc = cciss_request_irq(h, cciss_msix_discard_completions, |
5093 | cciss_intx_discard_completions); | |
5094 | if (rc) { | |
5095 | dev_warn(&h->pdev->dev, "Failed to request_irq after " | |
5096 | "soft reset.\n"); | |
5097 | goto clean4; | |
5098 | } | |
5099 | ||
5100 | rc = cciss_kdump_soft_reset(h); | |
5101 | if (rc) { | |
5102 | dev_warn(&h->pdev->dev, "Soft reset failed.\n"); | |
5103 | goto clean4; | |
5104 | } | |
5105 | ||
5106 | dev_info(&h->pdev->dev, "Board READY.\n"); | |
5107 | dev_info(&h->pdev->dev, | |
5108 | "Waiting for stale completions to drain.\n"); | |
5109 | h->access.set_intr_mask(h, CCISS_INTR_ON); | |
5110 | msleep(10000); | |
5111 | h->access.set_intr_mask(h, CCISS_INTR_OFF); | |
5112 | ||
5113 | rc = controller_reset_failed(h->cfgtable); | |
5114 | if (rc) | |
5115 | dev_info(&h->pdev->dev, | |
5116 | "Soft reset appears to have failed.\n"); | |
5117 | ||
5118 | /* since the controller's reset, we have to go back and re-init | |
5119 | * everything. Easiest to just forget what we've done and do it | |
5120 | * all over again. | |
5121 | */ | |
5122 | cciss_undo_allocations_after_kdump_soft_reset(h); | |
5123 | try_soft_reset = 0; | |
5124 | if (rc) | |
5125 | /* don't go to clean4, we already unallocated */ | |
5126 | return -ENODEV; | |
5127 | ||
5128 | goto reinit_after_soft_reset; | |
5129 | } | |
5130 | ||
f70dba83 | 5131 | cciss_scsi_setup(h); |
1da177e4 LT |
5132 | |
5133 | /* Turn the interrupts on so we can service requests */ | |
f70dba83 | 5134 | h->access.set_intr_mask(h, CCISS_INTR_ON); |
1da177e4 | 5135 | |
22bece00 MM |
5136 | /* Get the firmware version */ |
5137 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
5138 | if (inq_buff == NULL) { | |
b2a4a43d | 5139 | dev_err(&h->pdev->dev, "out of memory\n"); |
22bece00 MM |
5140 | goto clean4; |
5141 | } | |
5142 | ||
f70dba83 | 5143 | return_code = sendcmd_withirq(h, CISS_INQUIRY, inq_buff, |
b57695fe | 5144 | sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); |
22bece00 | 5145 | if (return_code == IO_OK) { |
f70dba83 SC |
5146 | h->firm_ver[0] = inq_buff->data_byte[32]; |
5147 | h->firm_ver[1] = inq_buff->data_byte[33]; | |
5148 | h->firm_ver[2] = inq_buff->data_byte[34]; | |
5149 | h->firm_ver[3] = inq_buff->data_byte[35]; | |
22bece00 | 5150 | } else { /* send command failed */ |
b2a4a43d | 5151 | dev_warn(&h->pdev->dev, "unable to determine firmware" |
22bece00 MM |
5152 | " version of controller\n"); |
5153 | } | |
212a5026 | 5154 | kfree(inq_buff); |
22bece00 | 5155 | |
f70dba83 | 5156 | cciss_procinit(h); |
92c4231a | 5157 | |
f70dba83 | 5158 | h->cciss_max_sectors = 8192; |
92c4231a | 5159 | |
f70dba83 | 5160 | rebuild_lun_table(h, 1, 0); |
0007a4c9 | 5161 | cciss_engage_scsi(h); |
f70dba83 | 5162 | h->busy_initializing = 0; |
e2019b58 | 5163 | return 1; |
1da177e4 | 5164 | |
6ae5ce8e | 5165 | clean4: |
54dae343 | 5166 | cciss_free_cmd_pool(h); |
abf7966e | 5167 | cciss_free_scatterlists(h); |
f70dba83 | 5168 | cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds); |
13049537 | 5169 | free_irq(h->intr[h->intr_mode], h); |
6ae5ce8e | 5170 | clean2: |
f70dba83 | 5171 | unregister_blkdev(h->major, h->devname); |
6ae5ce8e | 5172 | clean1: |
f70dba83 | 5173 | cciss_destroy_hba_sysfs_entry(h); |
7fe06326 | 5174 | clean0: |
2cfa948c SC |
5175 | pci_release_regions(pdev); |
5176 | clean_no_release_regions: | |
f70dba83 | 5177 | h->busy_initializing = 0; |
9cef0d2f | 5178 | |
872225ca MM |
5179 | /* |
5180 | * Deliberately omit pci_disable_device(): it does something nasty to | |
5181 | * Smart Array controllers that pci_enable_device does not undo | |
5182 | */ | |
799202cb | 5183 | pci_set_drvdata(pdev, NULL); |
f70dba83 | 5184 | free_hba(h); |
e2019b58 | 5185 | return -1; |
1da177e4 LT |
5186 | } |
5187 | ||
e9ca75b5 | 5188 | static void cciss_shutdown(struct pci_dev *pdev) |
1da177e4 | 5189 | { |
29009a03 SC |
5190 | ctlr_info_t *h; |
5191 | char *flush_buf; | |
7c832835 | 5192 | int return_code; |
1da177e4 | 5193 | |
29009a03 SC |
5194 | h = pci_get_drvdata(pdev); |
5195 | flush_buf = kzalloc(4, GFP_KERNEL); | |
5196 | if (!flush_buf) { | |
b2a4a43d | 5197 | dev_warn(&h->pdev->dev, "cache not flushed, out of memory.\n"); |
e9ca75b5 | 5198 | return; |
e9ca75b5 | 5199 | } |
29009a03 | 5200 | /* write all data in the battery backed cache to disk */ |
f70dba83 | 5201 | return_code = sendcmd_withirq(h, CCISS_CACHE_FLUSH, flush_buf, |
29009a03 SC |
5202 | 4, 0, CTLR_LUNID, TYPE_CMD); |
5203 | kfree(flush_buf); | |
5204 | if (return_code != IO_OK) | |
b2a4a43d | 5205 | dev_warn(&h->pdev->dev, "Error flushing cache\n"); |
29009a03 | 5206 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
13049537 | 5207 | free_irq(h->intr[h->intr_mode], h); |
e9ca75b5 GB |
5208 | } |
5209 | ||
13049537 JH |
5210 | static int __devinit cciss_enter_simple_mode(struct ctlr_info *h) |
5211 | { | |
5212 | u32 trans_support; | |
5213 | ||
5214 | trans_support = readl(&(h->cfgtable->TransportSupport)); | |
5215 | if (!(trans_support & SIMPLE_MODE)) | |
5216 | return -ENOTSUPP; | |
5217 | ||
5218 | h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); | |
5219 | writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest)); | |
5220 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
5221 | cciss_wait_for_mode_change_ack(h); | |
5222 | print_cfg_table(h); | |
5223 | if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { | |
5224 | dev_warn(&h->pdev->dev, "unable to get board into simple mode\n"); | |
5225 | return -ENODEV; | |
5226 | } | |
5227 | h->transMethod = CFGTBL_Trans_Simple; | |
5228 | return 0; | |
5229 | } | |
5230 | ||
5231 | ||
e9ca75b5 GB |
5232 | static void __devexit cciss_remove_one(struct pci_dev *pdev) |
5233 | { | |
f70dba83 | 5234 | ctlr_info_t *h; |
e9ca75b5 GB |
5235 | int i, j; |
5236 | ||
7c832835 | 5237 | if (pci_get_drvdata(pdev) == NULL) { |
b2a4a43d | 5238 | dev_err(&pdev->dev, "Unable to remove device\n"); |
1da177e4 LT |
5239 | return; |
5240 | } | |
0a9279cc | 5241 | |
f70dba83 SC |
5242 | h = pci_get_drvdata(pdev); |
5243 | i = h->ctlr; | |
7c832835 | 5244 | if (hba[i] == NULL) { |
b2a4a43d | 5245 | dev_err(&pdev->dev, "device appears to already be removed\n"); |
1da177e4 LT |
5246 | return; |
5247 | } | |
b6550777 | 5248 | |
f70dba83 | 5249 | mutex_lock(&h->busy_shutting_down); |
0a9279cc | 5250 | |
f70dba83 SC |
5251 | remove_from_scan_list(h); |
5252 | remove_proc_entry(h->devname, proc_cciss); | |
5253 | unregister_blkdev(h->major, h->devname); | |
b6550777 BH |
5254 | |
5255 | /* remove it from the disk list */ | |
5256 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
f70dba83 | 5257 | struct gendisk *disk = h->gendisk[j]; |
b6550777 | 5258 | if (disk) { |
165125e1 | 5259 | struct request_queue *q = disk->queue; |
b6550777 | 5260 | |
097d0264 | 5261 | if (disk->flags & GENHD_FL_UP) { |
f70dba83 | 5262 | cciss_destroy_ld_sysfs_entry(h, j, 1); |
b6550777 | 5263 | del_gendisk(disk); |
097d0264 | 5264 | } |
b6550777 BH |
5265 | if (q) |
5266 | blk_cleanup_queue(q); | |
5267 | } | |
5268 | } | |
5269 | ||
ba198efb | 5270 | #ifdef CONFIG_CISS_SCSI_TAPE |
f70dba83 | 5271 | cciss_unregister_scsi(h); /* unhook from SCSI subsystem */ |
ba198efb | 5272 | #endif |
b6550777 | 5273 | |
e9ca75b5 | 5274 | cciss_shutdown(pdev); |
fb86a35b MM |
5275 | |
5276 | #ifdef CONFIG_PCI_MSI | |
f70dba83 SC |
5277 | if (h->msix_vector) |
5278 | pci_disable_msix(h->pdev); | |
5279 | else if (h->msi_vector) | |
5280 | pci_disable_msi(h->pdev); | |
7c832835 | 5281 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 5282 | |
f70dba83 SC |
5283 | iounmap(h->transtable); |
5284 | iounmap(h->cfgtable); | |
5285 | iounmap(h->vaddr); | |
1da177e4 | 5286 | |
54dae343 | 5287 | cciss_free_cmd_pool(h); |
5c07a311 | 5288 | /* Free up sg elements */ |
f70dba83 SC |
5289 | for (j = 0; j < h->nr_cmds; j++) |
5290 | kfree(h->scatter_list[j]); | |
5291 | kfree(h->scatter_list); | |
5292 | cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds); | |
e363e014 SC |
5293 | kfree(h->blockFetchTable); |
5294 | if (h->reply_pool) | |
5295 | pci_free_consistent(h->pdev, h->max_commands * sizeof(__u64), | |
5296 | h->reply_pool, h->reply_pool_dhandle); | |
872225ca MM |
5297 | /* |
5298 | * Deliberately omit pci_disable_device(): it does something nasty to | |
5299 | * Smart Array controllers that pci_enable_device does not undo | |
5300 | */ | |
7c832835 | 5301 | pci_release_regions(pdev); |
4e570309 | 5302 | pci_set_drvdata(pdev, NULL); |
f70dba83 SC |
5303 | cciss_destroy_hba_sysfs_entry(h); |
5304 | mutex_unlock(&h->busy_shutting_down); | |
5305 | free_hba(h); | |
7c832835 | 5306 | } |
1da177e4 LT |
5307 | |
5308 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
5309 | .name = "cciss", |
5310 | .probe = cciss_init_one, | |
5311 | .remove = __devexit_p(cciss_remove_one), | |
5312 | .id_table = cciss_pci_device_id, /* id_table */ | |
e9ca75b5 | 5313 | .shutdown = cciss_shutdown, |
1da177e4 LT |
5314 | }; |
5315 | ||
5316 | /* | |
5317 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 5318 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
5319 | */ |
5320 | static int __init cciss_init(void) | |
5321 | { | |
7fe06326 AP |
5322 | int err; |
5323 | ||
10cbda97 JA |
5324 | /* |
5325 | * The hardware requires that commands are aligned on a 64-bit | |
5326 | * boundary. Given that we use pci_alloc_consistent() to allocate an | |
5327 | * array of them, the size must be a multiple of 8 bytes. | |
5328 | */ | |
1b7d0d28 | 5329 | BUILD_BUG_ON(sizeof(CommandList_struct) % COMMANDLIST_ALIGNMENT); |
1da177e4 LT |
5330 | printk(KERN_INFO DRIVER_NAME "\n"); |
5331 | ||
7fe06326 AP |
5332 | err = bus_register(&cciss_bus_type); |
5333 | if (err) | |
5334 | return err; | |
5335 | ||
b368c9dd AP |
5336 | /* Start the scan thread */ |
5337 | cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan"); | |
5338 | if (IS_ERR(cciss_scan_thread)) { | |
5339 | err = PTR_ERR(cciss_scan_thread); | |
5340 | goto err_bus_unregister; | |
5341 | } | |
5342 | ||
1da177e4 | 5343 | /* Register for our PCI devices */ |
7fe06326 AP |
5344 | err = pci_register_driver(&cciss_pci_driver); |
5345 | if (err) | |
b368c9dd | 5346 | goto err_thread_stop; |
7fe06326 | 5347 | |
617e1344 | 5348 | return err; |
7fe06326 | 5349 | |
b368c9dd AP |
5350 | err_thread_stop: |
5351 | kthread_stop(cciss_scan_thread); | |
5352 | err_bus_unregister: | |
7fe06326 | 5353 | bus_unregister(&cciss_bus_type); |
b368c9dd | 5354 | |
7fe06326 | 5355 | return err; |
1da177e4 LT |
5356 | } |
5357 | ||
5358 | static void __exit cciss_cleanup(void) | |
5359 | { | |
5360 | int i; | |
5361 | ||
5362 | pci_unregister_driver(&cciss_pci_driver); | |
5363 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
5364 | for (i = 0; i < MAX_CTLR; i++) { |
5365 | if (hba[i] != NULL) { | |
b2a4a43d SC |
5366 | dev_warn(&hba[i]->pdev->dev, |
5367 | "had to remove controller\n"); | |
1da177e4 LT |
5368 | cciss_remove_one(hba[i]->pdev); |
5369 | } | |
5370 | } | |
b368c9dd | 5371 | kthread_stop(cciss_scan_thread); |
90fdb0b9 JA |
5372 | if (proc_cciss) |
5373 | remove_proc_entry("driver/cciss", NULL); | |
7fe06326 | 5374 | bus_unregister(&cciss_bus_type); |
1da177e4 LT |
5375 | } |
5376 | ||
5377 | module_init(cciss_init); | |
5378 | module_exit(cciss_cleanup); |