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1da177e4 | 1 | /* |
bd4f36d6 MM |
2 | * Disk Array driver for HP Smart Array controllers. |
3 | * (C) Copyright 2000, 2007 Hewlett-Packard Development Company, L.P. | |
1da177e4 LT |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
bd4f36d6 | 7 | * the Free Software Foundation; version 2 of the License. |
1da177e4 LT |
8 | * |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
bd4f36d6 MM |
11 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * General Public License for more details. | |
1da177e4 LT |
13 | * |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
bd4f36d6 MM |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
17 | * 02111-1307, USA. | |
1da177e4 LT |
18 | * |
19 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com | |
20 | * | |
21 | */ | |
22 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/types.h> | |
26 | #include <linux/pci.h> | |
27 | #include <linux/kernel.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/major.h> | |
31 | #include <linux/fs.h> | |
32 | #include <linux/bio.h> | |
33 | #include <linux/blkpg.h> | |
34 | #include <linux/timer.h> | |
35 | #include <linux/proc_fs.h> | |
89b6e743 | 36 | #include <linux/seq_file.h> |
7c832835 | 37 | #include <linux/init.h> |
4d761609 | 38 | #include <linux/jiffies.h> |
1da177e4 LT |
39 | #include <linux/hdreg.h> |
40 | #include <linux/spinlock.h> | |
41 | #include <linux/compat.h> | |
b368c9dd | 42 | #include <linux/mutex.h> |
1da177e4 LT |
43 | #include <asm/uaccess.h> |
44 | #include <asm/io.h> | |
45 | ||
eb0df996 | 46 | #include <linux/dma-mapping.h> |
1da177e4 LT |
47 | #include <linux/blkdev.h> |
48 | #include <linux/genhd.h> | |
49 | #include <linux/completion.h> | |
d5d3b736 | 50 | #include <scsi/scsi.h> |
03bbfee5 MMOD |
51 | #include <scsi/sg.h> |
52 | #include <scsi/scsi_ioctl.h> | |
53 | #include <linux/cdrom.h> | |
231bc2a2 | 54 | #include <linux/scatterlist.h> |
0a9279cc | 55 | #include <linux/kthread.h> |
1da177e4 LT |
56 | |
57 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) | |
841fdffd MM |
58 | #define DRIVER_NAME "HP CISS Driver (v 3.6.26)" |
59 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 26) | |
1da177e4 LT |
60 | |
61 | /* Embedded module documentation macros - see modules.h */ | |
62 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
24aac480 | 63 | MODULE_DESCRIPTION("Driver for HP Smart Array Controllers"); |
841fdffd MM |
64 | MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); |
65 | MODULE_VERSION("3.6.26"); | |
1da177e4 LT |
66 | MODULE_LICENSE("GPL"); |
67 | ||
2a48fc0a | 68 | static DEFINE_MUTEX(cciss_mutex); |
bbe425cd | 69 | static struct proc_dir_entry *proc_cciss; |
2ec24ff1 | 70 | |
1da177e4 LT |
71 | #include "cciss_cmd.h" |
72 | #include "cciss.h" | |
73 | #include <linux/cciss_ioctl.h> | |
74 | ||
75 | /* define the PCI info for the cards we can control */ | |
76 | static const struct pci_device_id cciss_pci_device_id[] = { | |
f82ccdb9 BH |
77 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
78 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, | |
79 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, | |
80 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, | |
81 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, | |
82 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, | |
83 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, | |
84 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, | |
85 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, | |
86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, | |
87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, | |
88 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, | |
89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, | |
90 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, | |
91 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, | |
92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, | |
93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, | |
94 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, | |
de923916 | 95 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, |
9cff3b38 | 96 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
1da177e4 LT |
97 | {0,} |
98 | }; | |
7c832835 | 99 | |
1da177e4 LT |
100 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
101 | ||
1da177e4 LT |
102 | /* board_id = Subsystem Device ID & Vendor ID |
103 | * product = Marketing Name for the board | |
7c832835 | 104 | * access = Address of the struct of function pointers |
1da177e4 LT |
105 | */ |
106 | static struct board_type products[] = { | |
49153998 MM |
107 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
108 | {0x40800E11, "Smart Array 5i", &SA5B_access}, | |
109 | {0x40820E11, "Smart Array 532", &SA5B_access}, | |
110 | {0x40830E11, "Smart Array 5312", &SA5B_access}, | |
111 | {0x409A0E11, "Smart Array 641", &SA5_access}, | |
112 | {0x409B0E11, "Smart Array 642", &SA5_access}, | |
113 | {0x409C0E11, "Smart Array 6400", &SA5_access}, | |
114 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, | |
115 | {0x40910E11, "Smart Array 6i", &SA5_access}, | |
116 | {0x3225103C, "Smart Array P600", &SA5_access}, | |
4205df34 SC |
117 | {0x3223103C, "Smart Array P800", &SA5_access}, |
118 | {0x3234103C, "Smart Array P400", &SA5_access}, | |
49153998 MM |
119 | {0x3235103C, "Smart Array P400i", &SA5_access}, |
120 | {0x3211103C, "Smart Array E200i", &SA5_access}, | |
121 | {0x3212103C, "Smart Array E200", &SA5_access}, | |
122 | {0x3213103C, "Smart Array E200i", &SA5_access}, | |
123 | {0x3214103C, "Smart Array E200i", &SA5_access}, | |
124 | {0x3215103C, "Smart Array E200i", &SA5_access}, | |
125 | {0x3237103C, "Smart Array E500", &SA5_access}, | |
2ec24ff1 SC |
126 | {0x3223103C, "Smart Array P800", &SA5_access}, |
127 | {0x3234103C, "Smart Array P400", &SA5_access}, | |
49153998 | 128 | {0x323D103C, "Smart Array P700m", &SA5_access}, |
1da177e4 LT |
129 | }; |
130 | ||
d14c4ab5 | 131 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
7c832835 | 132 | #define MAX_CONFIG_WAIT 30000 |
1da177e4 LT |
133 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
134 | ||
135 | /*define how many times we will try a command because of bus resets */ | |
136 | #define MAX_CMD_RETRIES 3 | |
137 | ||
1da177e4 LT |
138 | #define MAX_CTLR 32 |
139 | ||
140 | /* Originally cciss driver only supports 8 major numbers */ | |
141 | #define MAX_CTLR_ORIG 8 | |
142 | ||
1da177e4 LT |
143 | static ctlr_info_t *hba[MAX_CTLR]; |
144 | ||
b368c9dd AP |
145 | static struct task_struct *cciss_scan_thread; |
146 | static DEFINE_MUTEX(scan_mutex); | |
147 | static LIST_HEAD(scan_q); | |
148 | ||
165125e1 | 149 | static void do_cciss_request(struct request_queue *q); |
0c2b3908 MM |
150 | static irqreturn_t do_cciss_intx(int irq, void *dev_id); |
151 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id); | |
ef7822c2 | 152 | static int cciss_open(struct block_device *bdev, fmode_t mode); |
6e9624b8 | 153 | static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode); |
ef7822c2 | 154 | static int cciss_release(struct gendisk *disk, fmode_t mode); |
8a6cfeb6 AB |
155 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
156 | unsigned int cmd, unsigned long arg); | |
ef7822c2 | 157 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
7c832835 | 158 | unsigned int cmd, unsigned long arg); |
a885c8c4 | 159 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 | 160 | |
1da177e4 | 161 | static int cciss_revalidate(struct gendisk *disk); |
2d11d993 | 162 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, int via_ioctl); |
a0ea8622 | 163 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
2d11d993 | 164 | int clear_all, int via_ioctl); |
1da177e4 | 165 | |
f70dba83 | 166 | static void cciss_read_capacity(ctlr_info_t *h, int logvol, |
00988a35 | 167 | sector_t *total_size, unsigned int *block_size); |
f70dba83 | 168 | static void cciss_read_capacity_16(ctlr_info_t *h, int logvol, |
00988a35 | 169 | sector_t *total_size, unsigned int *block_size); |
f70dba83 | 170 | static void cciss_geometry_inquiry(ctlr_info_t *h, int logvol, |
7b838bde | 171 | sector_t total_size, |
00988a35 | 172 | unsigned int block_size, InquiryData_struct *inq_buff, |
7c832835 | 173 | drive_info_struct *drv); |
dac5488a | 174 | static void __devinit cciss_interrupt_mode(ctlr_info_t *); |
7c832835 | 175 | static void start_io(ctlr_info_t *h); |
f70dba83 | 176 | static int sendcmd_withirq(ctlr_info_t *h, __u8 cmd, void *buff, size_t size, |
b57695fe | 177 | __u8 page_code, unsigned char scsi3addr[], |
178 | int cmd_type); | |
85cc61ae | 179 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
180 | int attempt_retry); | |
181 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c); | |
1da177e4 | 182 | |
d6f4965d | 183 | static int add_to_scan_list(struct ctlr_info *h); |
0a9279cc MM |
184 | static int scan_thread(void *data); |
185 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c); | |
617e1344 SC |
186 | static void cciss_hba_release(struct device *dev); |
187 | static void cciss_device_release(struct device *dev); | |
361e9b07 | 188 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index); |
9cef0d2f | 189 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index); |
29979a71 | 190 | static inline u32 next_command(ctlr_info_t *h); |
a6528d01 SC |
191 | static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev, |
192 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, | |
193 | u64 *cfg_offset); | |
194 | static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev, | |
195 | unsigned long *memory_bar); | |
16011131 | 196 | static inline u32 cciss_tag_discard_error_bits(ctlr_info_t *h, u32 tag); |
62710ae1 SC |
197 | static __devinit int write_driver_ver_to_cfgtable( |
198 | CfgTable_struct __iomem *cfgtable); | |
33079b21 | 199 | |
5e216153 MM |
200 | /* performant mode helper functions */ |
201 | static void calc_bucket_map(int *bucket, int num_buckets, int nsgs, | |
202 | int *bucket_map); | |
203 | static void cciss_put_controller_into_performant_mode(ctlr_info_t *h); | |
33079b21 | 204 | |
1da177e4 | 205 | #ifdef CONFIG_PROC_FS |
f70dba83 | 206 | static void cciss_procinit(ctlr_info_t *h); |
1da177e4 | 207 | #else |
f70dba83 | 208 | static void cciss_procinit(ctlr_info_t *h) |
7c832835 BH |
209 | { |
210 | } | |
211 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
212 | |
213 | #ifdef CONFIG_COMPAT | |
ef7822c2 AV |
214 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
215 | unsigned, unsigned long); | |
1da177e4 LT |
216 | #endif |
217 | ||
83d5cde4 | 218 | static const struct block_device_operations cciss_fops = { |
7c832835 | 219 | .owner = THIS_MODULE, |
6e9624b8 | 220 | .open = cciss_unlocked_open, |
ef7822c2 | 221 | .release = cciss_release, |
8a6cfeb6 | 222 | .ioctl = do_ioctl, |
7c832835 | 223 | .getgeo = cciss_getgeo, |
1da177e4 | 224 | #ifdef CONFIG_COMPAT |
ef7822c2 | 225 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 226 | #endif |
7c832835 | 227 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
228 | }; |
229 | ||
5e216153 MM |
230 | /* set_performant_mode: Modify the tag for cciss performant |
231 | * set bit 0 for pull model, bits 3-1 for block fetch | |
232 | * register number | |
233 | */ | |
234 | static void set_performant_mode(ctlr_info_t *h, CommandList_struct *c) | |
235 | { | |
0498cc2a | 236 | if (likely(h->transMethod & CFGTBL_Trans_Performant)) |
5e216153 MM |
237 | c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); |
238 | } | |
239 | ||
1da177e4 LT |
240 | /* |
241 | * Enqueuing and dequeuing functions for cmdlists. | |
242 | */ | |
e6e1ee93 | 243 | static inline void addQ(struct list_head *list, CommandList_struct *c) |
1da177e4 | 244 | { |
e6e1ee93 | 245 | list_add_tail(&c->list, list); |
1da177e4 LT |
246 | } |
247 | ||
8a3173de | 248 | static inline void removeQ(CommandList_struct *c) |
1da177e4 | 249 | { |
b59e64d0 HR |
250 | /* |
251 | * After kexec/dump some commands might still | |
252 | * be in flight, which the firmware will try | |
253 | * to complete. Resetting the firmware doesn't work | |
254 | * with old fw revisions, so we have to mark | |
255 | * them off as 'stale' to prevent the driver from | |
256 | * falling over. | |
257 | */ | |
e6e1ee93 | 258 | if (WARN_ON(list_empty(&c->list))) { |
b59e64d0 | 259 | c->cmd_type = CMD_MSG_STALE; |
8a3173de | 260 | return; |
b59e64d0 | 261 | } |
8a3173de | 262 | |
e6e1ee93 | 263 | list_del_init(&c->list); |
1da177e4 LT |
264 | } |
265 | ||
664a717d MM |
266 | static void enqueue_cmd_and_start_io(ctlr_info_t *h, |
267 | CommandList_struct *c) | |
268 | { | |
269 | unsigned long flags; | |
5e216153 | 270 | set_performant_mode(h, c); |
664a717d MM |
271 | spin_lock_irqsave(&h->lock, flags); |
272 | addQ(&h->reqQ, c); | |
273 | h->Qdepth++; | |
2a643ec6 SC |
274 | if (h->Qdepth > h->maxQsinceinit) |
275 | h->maxQsinceinit = h->Qdepth; | |
664a717d MM |
276 | start_io(h); |
277 | spin_unlock_irqrestore(&h->lock, flags); | |
278 | } | |
279 | ||
dccc9b56 | 280 | static void cciss_free_sg_chain_blocks(SGDescriptor_struct **cmd_sg_list, |
49fc5601 SC |
281 | int nr_cmds) |
282 | { | |
283 | int i; | |
284 | ||
285 | if (!cmd_sg_list) | |
286 | return; | |
287 | for (i = 0; i < nr_cmds; i++) { | |
dccc9b56 SC |
288 | kfree(cmd_sg_list[i]); |
289 | cmd_sg_list[i] = NULL; | |
49fc5601 SC |
290 | } |
291 | kfree(cmd_sg_list); | |
292 | } | |
293 | ||
dccc9b56 SC |
294 | static SGDescriptor_struct **cciss_allocate_sg_chain_blocks( |
295 | ctlr_info_t *h, int chainsize, int nr_cmds) | |
49fc5601 SC |
296 | { |
297 | int j; | |
dccc9b56 | 298 | SGDescriptor_struct **cmd_sg_list; |
49fc5601 SC |
299 | |
300 | if (chainsize <= 0) | |
301 | return NULL; | |
302 | ||
303 | cmd_sg_list = kmalloc(sizeof(*cmd_sg_list) * nr_cmds, GFP_KERNEL); | |
304 | if (!cmd_sg_list) | |
305 | return NULL; | |
306 | ||
307 | /* Build up chain blocks for each command */ | |
308 | for (j = 0; j < nr_cmds; j++) { | |
49fc5601 | 309 | /* Need a block of chainsized s/g elements. */ |
dccc9b56 SC |
310 | cmd_sg_list[j] = kmalloc((chainsize * |
311 | sizeof(*cmd_sg_list[j])), GFP_KERNEL); | |
312 | if (!cmd_sg_list[j]) { | |
49fc5601 SC |
313 | dev_err(&h->pdev->dev, "Cannot get memory " |
314 | "for s/g chains.\n"); | |
315 | goto clean; | |
316 | } | |
317 | } | |
318 | return cmd_sg_list; | |
319 | clean: | |
320 | cciss_free_sg_chain_blocks(cmd_sg_list, nr_cmds); | |
321 | return NULL; | |
322 | } | |
323 | ||
d45033ef SC |
324 | static void cciss_unmap_sg_chain_block(ctlr_info_t *h, CommandList_struct *c) |
325 | { | |
326 | SGDescriptor_struct *chain_sg; | |
327 | u64bit temp64; | |
328 | ||
329 | if (c->Header.SGTotal <= h->max_cmd_sgentries) | |
330 | return; | |
331 | ||
332 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; | |
333 | temp64.val32.lower = chain_sg->Addr.lower; | |
334 | temp64.val32.upper = chain_sg->Addr.upper; | |
335 | pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); | |
336 | } | |
337 | ||
338 | static void cciss_map_sg_chain_block(ctlr_info_t *h, CommandList_struct *c, | |
339 | SGDescriptor_struct *chain_block, int len) | |
340 | { | |
341 | SGDescriptor_struct *chain_sg; | |
342 | u64bit temp64; | |
343 | ||
344 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; | |
345 | chain_sg->Ext = CCISS_SG_CHAIN; | |
346 | chain_sg->Len = len; | |
347 | temp64.val = pci_map_single(h->pdev, chain_block, len, | |
348 | PCI_DMA_TODEVICE); | |
349 | chain_sg->Addr.lower = temp64.val32.lower; | |
350 | chain_sg->Addr.upper = temp64.val32.upper; | |
351 | } | |
352 | ||
1da177e4 LT |
353 | #include "cciss_scsi.c" /* For SCSI tape support */ |
354 | ||
1e6f2dc1 AB |
355 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
356 | "UNKNOWN" | |
357 | }; | |
0e4a9d03 | 358 | #define RAID_UNKNOWN (ARRAY_SIZE(raid_label)-1) |
0f5486ec | 359 | |
1da177e4 LT |
360 | #ifdef CONFIG_PROC_FS |
361 | ||
362 | /* | |
363 | * Report information about this controller. | |
364 | */ | |
365 | #define ENG_GIG 1000000000 | |
366 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
89b6e743 | 367 | #define ENGAGE_SCSI "engage scsi" |
1da177e4 | 368 | |
89b6e743 | 369 | static void cciss_seq_show_header(struct seq_file *seq) |
1da177e4 | 370 | { |
89b6e743 MM |
371 | ctlr_info_t *h = seq->private; |
372 | ||
373 | seq_printf(seq, "%s: HP %s Controller\n" | |
374 | "Board ID: 0x%08lx\n" | |
375 | "Firmware Version: %c%c%c%c\n" | |
376 | "IRQ: %d\n" | |
377 | "Logical drives: %d\n" | |
378 | "Current Q depth: %d\n" | |
379 | "Current # commands on controller: %d\n" | |
380 | "Max Q depth since init: %d\n" | |
381 | "Max # commands on controller since init: %d\n" | |
382 | "Max SG entries since init: %d\n", | |
383 | h->devname, | |
384 | h->product_name, | |
385 | (unsigned long)h->board_id, | |
386 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
5e216153 | 387 | h->firm_ver[3], (unsigned int)h->intr[PERF_MODE_INT], |
89b6e743 MM |
388 | h->num_luns, |
389 | h->Qdepth, h->commands_outstanding, | |
390 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
391 | ||
392 | #ifdef CONFIG_CISS_SCSI_TAPE | |
f70dba83 | 393 | cciss_seq_tape_report(seq, h); |
89b6e743 MM |
394 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
395 | } | |
1da177e4 | 396 | |
89b6e743 MM |
397 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
398 | { | |
399 | ctlr_info_t *h = seq->private; | |
89b6e743 | 400 | unsigned long flags; |
1da177e4 LT |
401 | |
402 | /* prevent displaying bogus info during configuration | |
403 | * or deconfiguration of a logical volume | |
404 | */ | |
f70dba83 | 405 | spin_lock_irqsave(&h->lock, flags); |
1da177e4 | 406 | if (h->busy_configuring) { |
f70dba83 | 407 | spin_unlock_irqrestore(&h->lock, flags); |
89b6e743 | 408 | return ERR_PTR(-EBUSY); |
1da177e4 LT |
409 | } |
410 | h->busy_configuring = 1; | |
f70dba83 | 411 | spin_unlock_irqrestore(&h->lock, flags); |
1da177e4 | 412 | |
89b6e743 MM |
413 | if (*pos == 0) |
414 | cciss_seq_show_header(seq); | |
415 | ||
416 | return pos; | |
417 | } | |
418 | ||
419 | static int cciss_seq_show(struct seq_file *seq, void *v) | |
420 | { | |
421 | sector_t vol_sz, vol_sz_frac; | |
422 | ctlr_info_t *h = seq->private; | |
423 | unsigned ctlr = h->ctlr; | |
424 | loff_t *pos = v; | |
9cef0d2f | 425 | drive_info_struct *drv = h->drv[*pos]; |
89b6e743 MM |
426 | |
427 | if (*pos > h->highest_lun) | |
428 | return 0; | |
429 | ||
531c2dc7 SC |
430 | if (drv == NULL) /* it's possible for h->drv[] to have holes. */ |
431 | return 0; | |
432 | ||
89b6e743 MM |
433 | if (drv->heads == 0) |
434 | return 0; | |
435 | ||
436 | vol_sz = drv->nr_blocks; | |
437 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
438 | vol_sz_frac *= 100; | |
439 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
440 | ||
fa52bec9 | 441 | if (drv->raid_level < 0 || drv->raid_level > RAID_UNKNOWN) |
89b6e743 MM |
442 | drv->raid_level = RAID_UNKNOWN; |
443 | seq_printf(seq, "cciss/c%dd%d:" | |
444 | "\t%4u.%02uGB\tRAID %s\n", | |
445 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, | |
446 | raid_label[drv->raid_level]); | |
447 | return 0; | |
448 | } | |
449 | ||
450 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
451 | { | |
452 | ctlr_info_t *h = seq->private; | |
453 | ||
454 | if (*pos > h->highest_lun) | |
455 | return NULL; | |
456 | *pos += 1; | |
457 | ||
458 | return pos; | |
459 | } | |
460 | ||
461 | static void cciss_seq_stop(struct seq_file *seq, void *v) | |
462 | { | |
463 | ctlr_info_t *h = seq->private; | |
464 | ||
465 | /* Only reset h->busy_configuring if we succeeded in setting | |
466 | * it during cciss_seq_start. */ | |
467 | if (v == ERR_PTR(-EBUSY)) | |
468 | return; | |
7c832835 | 469 | |
1da177e4 | 470 | h->busy_configuring = 0; |
1da177e4 LT |
471 | } |
472 | ||
88e9d34c | 473 | static const struct seq_operations cciss_seq_ops = { |
89b6e743 MM |
474 | .start = cciss_seq_start, |
475 | .show = cciss_seq_show, | |
476 | .next = cciss_seq_next, | |
477 | .stop = cciss_seq_stop, | |
478 | }; | |
479 | ||
480 | static int cciss_seq_open(struct inode *inode, struct file *file) | |
481 | { | |
482 | int ret = seq_open(file, &cciss_seq_ops); | |
483 | struct seq_file *seq = file->private_data; | |
484 | ||
485 | if (!ret) | |
486 | seq->private = PDE(inode)->data; | |
487 | ||
488 | return ret; | |
489 | } | |
490 | ||
491 | static ssize_t | |
492 | cciss_proc_write(struct file *file, const char __user *buf, | |
493 | size_t length, loff_t *ppos) | |
1da177e4 | 494 | { |
89b6e743 MM |
495 | int err; |
496 | char *buffer; | |
497 | ||
498 | #ifndef CONFIG_CISS_SCSI_TAPE | |
499 | return -EINVAL; | |
1da177e4 LT |
500 | #endif |
501 | ||
89b6e743 | 502 | if (!buf || length > PAGE_SIZE - 1) |
7c832835 | 503 | return -EINVAL; |
89b6e743 MM |
504 | |
505 | buffer = (char *)__get_free_page(GFP_KERNEL); | |
506 | if (!buffer) | |
507 | return -ENOMEM; | |
508 | ||
509 | err = -EFAULT; | |
510 | if (copy_from_user(buffer, buf, length)) | |
511 | goto out; | |
512 | buffer[length] = '\0'; | |
513 | ||
514 | #ifdef CONFIG_CISS_SCSI_TAPE | |
515 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { | |
516 | struct seq_file *seq = file->private_data; | |
517 | ctlr_info_t *h = seq->private; | |
89b6e743 | 518 | |
f70dba83 | 519 | err = cciss_engage_scsi(h); |
8721c81f | 520 | if (err == 0) |
89b6e743 MM |
521 | err = length; |
522 | } else | |
523 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
524 | err = -EINVAL; | |
7c832835 BH |
525 | /* might be nice to have "disengage" too, but it's not |
526 | safely possible. (only 1 module use count, lock issues.) */ | |
89b6e743 MM |
527 | |
528 | out: | |
529 | free_page((unsigned long)buffer); | |
530 | return err; | |
1da177e4 LT |
531 | } |
532 | ||
828c0950 | 533 | static const struct file_operations cciss_proc_fops = { |
89b6e743 MM |
534 | .owner = THIS_MODULE, |
535 | .open = cciss_seq_open, | |
536 | .read = seq_read, | |
537 | .llseek = seq_lseek, | |
538 | .release = seq_release, | |
539 | .write = cciss_proc_write, | |
540 | }; | |
541 | ||
f70dba83 | 542 | static void __devinit cciss_procinit(ctlr_info_t *h) |
1da177e4 LT |
543 | { |
544 | struct proc_dir_entry *pde; | |
545 | ||
89b6e743 | 546 | if (proc_cciss == NULL) |
928b4d8c | 547 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
89b6e743 MM |
548 | if (!proc_cciss) |
549 | return; | |
f70dba83 | 550 | pde = proc_create_data(h->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
89b6e743 | 551 | S_IROTH, proc_cciss, |
f70dba83 | 552 | &cciss_proc_fops, h); |
1da177e4 | 553 | } |
7c832835 | 554 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 555 | |
7fe06326 AP |
556 | #define MAX_PRODUCT_NAME_LEN 19 |
557 | ||
558 | #define to_hba(n) container_of(n, struct ctlr_info, dev) | |
559 | #define to_drv(n) container_of(n, drive_info_struct, dev) | |
560 | ||
ec52d5f1 | 561 | /* List of controllers which cannot be hard reset on kexec with reset_devices */ |
957c2ec5 SC |
562 | static u32 unresettable_controller[] = { |
563 | 0x324a103C, /* Smart Array P712m */ | |
564 | 0x324b103C, /* SmartArray P711m */ | |
565 | 0x3223103C, /* Smart Array P800 */ | |
566 | 0x3234103C, /* Smart Array P400 */ | |
567 | 0x3235103C, /* Smart Array P400i */ | |
568 | 0x3211103C, /* Smart Array E200i */ | |
569 | 0x3212103C, /* Smart Array E200 */ | |
570 | 0x3213103C, /* Smart Array E200i */ | |
571 | 0x3214103C, /* Smart Array E200i */ | |
572 | 0x3215103C, /* Smart Array E200i */ | |
573 | 0x3237103C, /* Smart Array E500 */ | |
574 | 0x323D103C, /* Smart Array P700m */ | |
575 | 0x409C0E11, /* Smart Array 6400 */ | |
576 | 0x409D0E11, /* Smart Array 6400 EM */ | |
577 | }; | |
578 | ||
ec52d5f1 SC |
579 | /* List of controllers which cannot even be soft reset */ |
580 | static u32 soft_unresettable_controller[] = { | |
581 | 0x409C0E11, /* Smart Array 6400 */ | |
582 | 0x409D0E11, /* Smart Array 6400 EM */ | |
583 | }; | |
584 | ||
585 | static int ctlr_is_hard_resettable(u32 board_id) | |
957c2ec5 SC |
586 | { |
587 | int i; | |
588 | ||
589 | for (i = 0; i < ARRAY_SIZE(unresettable_controller); i++) | |
ec52d5f1 | 590 | if (unresettable_controller[i] == board_id) |
957c2ec5 SC |
591 | return 0; |
592 | return 1; | |
593 | } | |
594 | ||
ec52d5f1 SC |
595 | static int ctlr_is_soft_resettable(u32 board_id) |
596 | { | |
597 | int i; | |
598 | ||
599 | for (i = 0; i < ARRAY_SIZE(soft_unresettable_controller); i++) | |
600 | if (soft_unresettable_controller[i] == board_id) | |
601 | return 0; | |
602 | return 1; | |
603 | } | |
604 | ||
605 | static int ctlr_is_resettable(u32 board_id) | |
606 | { | |
607 | return ctlr_is_hard_resettable(board_id) || | |
608 | ctlr_is_soft_resettable(board_id); | |
609 | } | |
610 | ||
957c2ec5 SC |
611 | static ssize_t host_show_resettable(struct device *dev, |
612 | struct device_attribute *attr, | |
613 | char *buf) | |
614 | { | |
615 | struct ctlr_info *h = to_hba(dev); | |
616 | ||
ec52d5f1 | 617 | return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id)); |
957c2ec5 SC |
618 | } |
619 | static DEVICE_ATTR(resettable, S_IRUGO, host_show_resettable, NULL); | |
620 | ||
d6f4965d AP |
621 | static ssize_t host_store_rescan(struct device *dev, |
622 | struct device_attribute *attr, | |
623 | const char *buf, size_t count) | |
624 | { | |
625 | struct ctlr_info *h = to_hba(dev); | |
626 | ||
627 | add_to_scan_list(h); | |
628 | wake_up_process(cciss_scan_thread); | |
629 | wait_for_completion_interruptible(&h->scan_wait); | |
630 | ||
631 | return count; | |
632 | } | |
8ba95c69 | 633 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); |
7fe06326 AP |
634 | |
635 | static ssize_t dev_show_unique_id(struct device *dev, | |
636 | struct device_attribute *attr, | |
637 | char *buf) | |
638 | { | |
639 | drive_info_struct *drv = to_drv(dev); | |
640 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
641 | __u8 sn[16]; | |
642 | unsigned long flags; | |
643 | int ret = 0; | |
644 | ||
f70dba83 | 645 | spin_lock_irqsave(&h->lock, flags); |
7fe06326 AP |
646 | if (h->busy_configuring) |
647 | ret = -EBUSY; | |
648 | else | |
649 | memcpy(sn, drv->serial_no, sizeof(sn)); | |
f70dba83 | 650 | spin_unlock_irqrestore(&h->lock, flags); |
7fe06326 AP |
651 | |
652 | if (ret) | |
653 | return ret; | |
654 | else | |
655 | return snprintf(buf, 16 * 2 + 2, | |
656 | "%02X%02X%02X%02X%02X%02X%02X%02X" | |
657 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", | |
658 | sn[0], sn[1], sn[2], sn[3], | |
659 | sn[4], sn[5], sn[6], sn[7], | |
660 | sn[8], sn[9], sn[10], sn[11], | |
661 | sn[12], sn[13], sn[14], sn[15]); | |
662 | } | |
8ba95c69 | 663 | static DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); |
7fe06326 AP |
664 | |
665 | static ssize_t dev_show_vendor(struct device *dev, | |
666 | struct device_attribute *attr, | |
667 | char *buf) | |
668 | { | |
669 | drive_info_struct *drv = to_drv(dev); | |
670 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
671 | char vendor[VENDOR_LEN + 1]; | |
672 | unsigned long flags; | |
673 | int ret = 0; | |
674 | ||
f70dba83 | 675 | spin_lock_irqsave(&h->lock, flags); |
7fe06326 AP |
676 | if (h->busy_configuring) |
677 | ret = -EBUSY; | |
678 | else | |
679 | memcpy(vendor, drv->vendor, VENDOR_LEN + 1); | |
f70dba83 | 680 | spin_unlock_irqrestore(&h->lock, flags); |
7fe06326 AP |
681 | |
682 | if (ret) | |
683 | return ret; | |
684 | else | |
685 | return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); | |
686 | } | |
8ba95c69 | 687 | static DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); |
7fe06326 AP |
688 | |
689 | static ssize_t dev_show_model(struct device *dev, | |
690 | struct device_attribute *attr, | |
691 | char *buf) | |
692 | { | |
693 | drive_info_struct *drv = to_drv(dev); | |
694 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
695 | char model[MODEL_LEN + 1]; | |
696 | unsigned long flags; | |
697 | int ret = 0; | |
698 | ||
f70dba83 | 699 | spin_lock_irqsave(&h->lock, flags); |
7fe06326 AP |
700 | if (h->busy_configuring) |
701 | ret = -EBUSY; | |
702 | else | |
703 | memcpy(model, drv->model, MODEL_LEN + 1); | |
f70dba83 | 704 | spin_unlock_irqrestore(&h->lock, flags); |
7fe06326 AP |
705 | |
706 | if (ret) | |
707 | return ret; | |
708 | else | |
709 | return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); | |
710 | } | |
8ba95c69 | 711 | static DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); |
7fe06326 AP |
712 | |
713 | static ssize_t dev_show_rev(struct device *dev, | |
714 | struct device_attribute *attr, | |
715 | char *buf) | |
716 | { | |
717 | drive_info_struct *drv = to_drv(dev); | |
718 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
719 | char rev[REV_LEN + 1]; | |
720 | unsigned long flags; | |
721 | int ret = 0; | |
722 | ||
f70dba83 | 723 | spin_lock_irqsave(&h->lock, flags); |
7fe06326 AP |
724 | if (h->busy_configuring) |
725 | ret = -EBUSY; | |
726 | else | |
727 | memcpy(rev, drv->rev, REV_LEN + 1); | |
f70dba83 | 728 | spin_unlock_irqrestore(&h->lock, flags); |
7fe06326 AP |
729 | |
730 | if (ret) | |
731 | return ret; | |
732 | else | |
733 | return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); | |
734 | } | |
8ba95c69 | 735 | static DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); |
7fe06326 | 736 | |
ce84a8ae SC |
737 | static ssize_t cciss_show_lunid(struct device *dev, |
738 | struct device_attribute *attr, char *buf) | |
739 | { | |
9cef0d2f SC |
740 | drive_info_struct *drv = to_drv(dev); |
741 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
ce84a8ae SC |
742 | unsigned long flags; |
743 | unsigned char lunid[8]; | |
744 | ||
f70dba83 | 745 | spin_lock_irqsave(&h->lock, flags); |
ce84a8ae | 746 | if (h->busy_configuring) { |
f70dba83 | 747 | spin_unlock_irqrestore(&h->lock, flags); |
ce84a8ae SC |
748 | return -EBUSY; |
749 | } | |
750 | if (!drv->heads) { | |
f70dba83 | 751 | spin_unlock_irqrestore(&h->lock, flags); |
ce84a8ae SC |
752 | return -ENOTTY; |
753 | } | |
754 | memcpy(lunid, drv->LunID, sizeof(lunid)); | |
f70dba83 | 755 | spin_unlock_irqrestore(&h->lock, flags); |
ce84a8ae SC |
756 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", |
757 | lunid[0], lunid[1], lunid[2], lunid[3], | |
758 | lunid[4], lunid[5], lunid[6], lunid[7]); | |
759 | } | |
8ba95c69 | 760 | static DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL); |
ce84a8ae | 761 | |
3ff1111d SC |
762 | static ssize_t cciss_show_raid_level(struct device *dev, |
763 | struct device_attribute *attr, char *buf) | |
764 | { | |
9cef0d2f SC |
765 | drive_info_struct *drv = to_drv(dev); |
766 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
3ff1111d SC |
767 | int raid; |
768 | unsigned long flags; | |
769 | ||
f70dba83 | 770 | spin_lock_irqsave(&h->lock, flags); |
3ff1111d | 771 | if (h->busy_configuring) { |
f70dba83 | 772 | spin_unlock_irqrestore(&h->lock, flags); |
3ff1111d SC |
773 | return -EBUSY; |
774 | } | |
775 | raid = drv->raid_level; | |
f70dba83 | 776 | spin_unlock_irqrestore(&h->lock, flags); |
3ff1111d SC |
777 | if (raid < 0 || raid > RAID_UNKNOWN) |
778 | raid = RAID_UNKNOWN; | |
779 | ||
780 | return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n", | |
781 | raid_label[raid]); | |
782 | } | |
8ba95c69 | 783 | static DEVICE_ATTR(raid_level, S_IRUGO, cciss_show_raid_level, NULL); |
3ff1111d | 784 | |
e272afec SC |
785 | static ssize_t cciss_show_usage_count(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); | |
e272afec SC |
790 | unsigned long flags; |
791 | int count; | |
792 | ||
f70dba83 | 793 | spin_lock_irqsave(&h->lock, flags); |
e272afec | 794 | if (h->busy_configuring) { |
f70dba83 | 795 | spin_unlock_irqrestore(&h->lock, flags); |
e272afec SC |
796 | return -EBUSY; |
797 | } | |
798 | count = drv->usage_count; | |
f70dba83 | 799 | spin_unlock_irqrestore(&h->lock, flags); |
e272afec SC |
800 | return snprintf(buf, 20, "%d\n", count); |
801 | } | |
8ba95c69 | 802 | static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL); |
e272afec | 803 | |
d6f4965d AP |
804 | static struct attribute *cciss_host_attrs[] = { |
805 | &dev_attr_rescan.attr, | |
957c2ec5 | 806 | &dev_attr_resettable.attr, |
d6f4965d AP |
807 | NULL |
808 | }; | |
809 | ||
810 | static struct attribute_group cciss_host_attr_group = { | |
811 | .attrs = cciss_host_attrs, | |
812 | }; | |
813 | ||
9f792d9f | 814 | static const struct attribute_group *cciss_host_attr_groups[] = { |
d6f4965d AP |
815 | &cciss_host_attr_group, |
816 | NULL | |
817 | }; | |
818 | ||
819 | static struct device_type cciss_host_type = { | |
820 | .name = "cciss_host", | |
821 | .groups = cciss_host_attr_groups, | |
617e1344 | 822 | .release = cciss_hba_release, |
d6f4965d AP |
823 | }; |
824 | ||
7fe06326 AP |
825 | static struct attribute *cciss_dev_attrs[] = { |
826 | &dev_attr_unique_id.attr, | |
827 | &dev_attr_model.attr, | |
828 | &dev_attr_vendor.attr, | |
829 | &dev_attr_rev.attr, | |
ce84a8ae | 830 | &dev_attr_lunid.attr, |
3ff1111d | 831 | &dev_attr_raid_level.attr, |
e272afec | 832 | &dev_attr_usage_count.attr, |
7fe06326 AP |
833 | NULL |
834 | }; | |
835 | ||
836 | static struct attribute_group cciss_dev_attr_group = { | |
837 | .attrs = cciss_dev_attrs, | |
838 | }; | |
839 | ||
a4dbd674 | 840 | static const struct attribute_group *cciss_dev_attr_groups[] = { |
7fe06326 AP |
841 | &cciss_dev_attr_group, |
842 | NULL | |
843 | }; | |
844 | ||
845 | static struct device_type cciss_dev_type = { | |
846 | .name = "cciss_device", | |
847 | .groups = cciss_dev_attr_groups, | |
617e1344 | 848 | .release = cciss_device_release, |
7fe06326 AP |
849 | }; |
850 | ||
851 | static struct bus_type cciss_bus_type = { | |
852 | .name = "cciss", | |
853 | }; | |
854 | ||
617e1344 SC |
855 | /* |
856 | * cciss_hba_release is called when the reference count | |
857 | * of h->dev goes to zero. | |
858 | */ | |
859 | static void cciss_hba_release(struct device *dev) | |
860 | { | |
861 | /* | |
862 | * nothing to do, but need this to avoid a warning | |
863 | * about not having a release handler from lib/kref.c. | |
864 | */ | |
865 | } | |
7fe06326 AP |
866 | |
867 | /* | |
868 | * Initialize sysfs entry for each controller. This sets up and registers | |
869 | * the 'cciss#' directory for each individual controller under | |
870 | * /sys/bus/pci/devices/<dev>/. | |
871 | */ | |
872 | static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) | |
873 | { | |
874 | device_initialize(&h->dev); | |
875 | h->dev.type = &cciss_host_type; | |
876 | h->dev.bus = &cciss_bus_type; | |
877 | dev_set_name(&h->dev, "%s", h->devname); | |
878 | h->dev.parent = &h->pdev->dev; | |
879 | ||
880 | return device_add(&h->dev); | |
881 | } | |
882 | ||
883 | /* | |
884 | * Remove sysfs entries for an hba. | |
885 | */ | |
886 | static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) | |
887 | { | |
888 | device_del(&h->dev); | |
617e1344 SC |
889 | put_device(&h->dev); /* final put. */ |
890 | } | |
891 | ||
892 | /* cciss_device_release is called when the reference count | |
9cef0d2f | 893 | * of h->drv[x]dev goes to zero. |
617e1344 SC |
894 | */ |
895 | static void cciss_device_release(struct device *dev) | |
896 | { | |
9cef0d2f SC |
897 | drive_info_struct *drv = to_drv(dev); |
898 | kfree(drv); | |
7fe06326 AP |
899 | } |
900 | ||
901 | /* | |
902 | * Initialize sysfs for each logical drive. This sets up and registers | |
903 | * the 'c#d#' directory for each individual logical drive under | |
904 | * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from | |
905 | * /sys/block/cciss!c#d# to this entry. | |
906 | */ | |
617e1344 | 907 | static long cciss_create_ld_sysfs_entry(struct ctlr_info *h, |
7fe06326 AP |
908 | int drv_index) |
909 | { | |
617e1344 SC |
910 | struct device *dev; |
911 | ||
9cef0d2f | 912 | if (h->drv[drv_index]->device_initialized) |
8ce51966 SC |
913 | return 0; |
914 | ||
9cef0d2f | 915 | dev = &h->drv[drv_index]->dev; |
617e1344 SC |
916 | device_initialize(dev); |
917 | dev->type = &cciss_dev_type; | |
918 | dev->bus = &cciss_bus_type; | |
919 | dev_set_name(dev, "c%dd%d", h->ctlr, drv_index); | |
920 | dev->parent = &h->dev; | |
9cef0d2f | 921 | h->drv[drv_index]->device_initialized = 1; |
617e1344 | 922 | return device_add(dev); |
7fe06326 AP |
923 | } |
924 | ||
925 | /* | |
926 | * Remove sysfs entries for a logical drive. | |
927 | */ | |
8ce51966 SC |
928 | static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index, |
929 | int ctlr_exiting) | |
7fe06326 | 930 | { |
9cef0d2f | 931 | struct device *dev = &h->drv[drv_index]->dev; |
8ce51966 SC |
932 | |
933 | /* special case for c*d0, we only destroy it on controller exit */ | |
934 | if (drv_index == 0 && !ctlr_exiting) | |
935 | return; | |
936 | ||
617e1344 SC |
937 | device_del(dev); |
938 | put_device(dev); /* the "final" put. */ | |
9cef0d2f | 939 | h->drv[drv_index] = NULL; |
7fe06326 AP |
940 | } |
941 | ||
7c832835 BH |
942 | /* |
943 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 944 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
6b4d96b8 | 945 | * which ones are free or in use. |
7c832835 | 946 | */ |
6b4d96b8 | 947 | static CommandList_struct *cmd_alloc(ctlr_info_t *h) |
1da177e4 LT |
948 | { |
949 | CommandList_struct *c; | |
7c832835 | 950 | int i; |
1da177e4 LT |
951 | u64bit temp64; |
952 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
953 | ||
6b4d96b8 SC |
954 | do { |
955 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); | |
956 | if (i == h->nr_cmds) | |
7c832835 | 957 | return NULL; |
6b4d96b8 SC |
958 | } while (test_and_set_bit(i & (BITS_PER_LONG - 1), |
959 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
6b4d96b8 SC |
960 | c = h->cmd_pool + i; |
961 | memset(c, 0, sizeof(CommandList_struct)); | |
962 | cmd_dma_handle = h->cmd_pool_dhandle + i * sizeof(CommandList_struct); | |
963 | c->err_info = h->errinfo_pool + i; | |
964 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
965 | err_dma_handle = h->errinfo_pool_dhandle | |
966 | + i * sizeof(ErrorInfo_struct); | |
967 | h->nr_allocs++; | |
1da177e4 | 968 | |
6b4d96b8 | 969 | c->cmdindex = i; |
33079b21 | 970 | |
e6e1ee93 | 971 | INIT_LIST_HEAD(&c->list); |
6b4d96b8 SC |
972 | c->busaddr = (__u32) cmd_dma_handle; |
973 | temp64.val = (__u64) err_dma_handle; | |
974 | c->ErrDesc.Addr.lower = temp64.val32.lower; | |
975 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
976 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
7c832835 | 977 | |
6b4d96b8 SC |
978 | c->ctlr = h->ctlr; |
979 | return c; | |
980 | } | |
33079b21 | 981 | |
6b4d96b8 SC |
982 | /* allocate a command using pci_alloc_consistent, used for ioctls, |
983 | * etc., not for the main i/o path. | |
984 | */ | |
985 | static CommandList_struct *cmd_special_alloc(ctlr_info_t *h) | |
986 | { | |
987 | CommandList_struct *c; | |
988 | u64bit temp64; | |
989 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
990 | ||
991 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
992 | sizeof(CommandList_struct), &cmd_dma_handle); | |
993 | if (c == NULL) | |
994 | return NULL; | |
995 | memset(c, 0, sizeof(CommandList_struct)); | |
996 | ||
997 | c->cmdindex = -1; | |
998 | ||
999 | c->err_info = (ErrorInfo_struct *) | |
1000 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
1001 | &err_dma_handle); | |
1002 | ||
1003 | if (c->err_info == NULL) { | |
1004 | pci_free_consistent(h->pdev, | |
1005 | sizeof(CommandList_struct), c, cmd_dma_handle); | |
1006 | return NULL; | |
7c832835 | 1007 | } |
6b4d96b8 | 1008 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
1da177e4 | 1009 | |
e6e1ee93 | 1010 | INIT_LIST_HEAD(&c->list); |
1da177e4 | 1011 | c->busaddr = (__u32) cmd_dma_handle; |
7c832835 | 1012 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
1013 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
1014 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
1015 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 1016 | |
7c832835 BH |
1017 | c->ctlr = h->ctlr; |
1018 | return c; | |
1da177e4 LT |
1019 | } |
1020 | ||
6b4d96b8 | 1021 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
1022 | { |
1023 | int i; | |
6b4d96b8 SC |
1024 | |
1025 | i = c - h->cmd_pool; | |
1026 | clear_bit(i & (BITS_PER_LONG - 1), | |
1027 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
1028 | h->nr_frees++; | |
1029 | } | |
1030 | ||
1031 | static void cmd_special_free(ctlr_info_t *h, CommandList_struct *c) | |
1032 | { | |
1da177e4 LT |
1033 | u64bit temp64; |
1034 | ||
6b4d96b8 SC |
1035 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
1036 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
1037 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
1038 | c->err_info, (dma_addr_t) temp64.val); | |
16011131 SC |
1039 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), c, |
1040 | (dma_addr_t) cciss_tag_discard_error_bits(h, (u32) c->busaddr)); | |
1da177e4 LT |
1041 | } |
1042 | ||
1043 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
1044 | { | |
7c832835 | 1045 | return disk->queue->queuedata; |
1da177e4 LT |
1046 | } |
1047 | ||
1048 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
1049 | { | |
1050 | return disk->private_data; | |
1051 | } | |
1052 | ||
1053 | /* | |
1054 | * Open. Make sure the device is really there. | |
1055 | */ | |
ef7822c2 | 1056 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
1da177e4 | 1057 | { |
f70dba83 | 1058 | ctlr_info_t *h = get_host(bdev->bd_disk); |
ef7822c2 | 1059 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
1da177e4 | 1060 | |
b2a4a43d | 1061 | dev_dbg(&h->pdev->dev, "cciss_open %s\n", bdev->bd_disk->disk_name); |
2e043986 | 1062 | if (drv->busy_configuring) |
ddd47442 | 1063 | return -EBUSY; |
1da177e4 LT |
1064 | /* |
1065 | * Root is allowed to open raw volume zero even if it's not configured | |
1066 | * so array config can still work. Root is also allowed to open any | |
1067 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
1068 | * disk information. I don't think I really like this | |
1069 | * but I'm already using way to many device nodes to claim another one | |
1070 | * for "raw controller". | |
1071 | */ | |
7a06f789 | 1072 | if (drv->heads == 0) { |
ef7822c2 | 1073 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
1da177e4 | 1074 | /* if not node 0 make sure it is a partition = 0 */ |
ef7822c2 | 1075 | if (MINOR(bdev->bd_dev) & 0x0f) { |
7c832835 | 1076 | return -ENXIO; |
1da177e4 | 1077 | /* if it is, make sure we have a LUN ID */ |
39ccf9a6 SC |
1078 | } else if (memcmp(drv->LunID, CTLR_LUNID, |
1079 | sizeof(drv->LunID))) { | |
1da177e4 LT |
1080 | return -ENXIO; |
1081 | } | |
1082 | } | |
1083 | if (!capable(CAP_SYS_ADMIN)) | |
1084 | return -EPERM; | |
1085 | } | |
1086 | drv->usage_count++; | |
f70dba83 | 1087 | h->usage_count++; |
1da177e4 LT |
1088 | return 0; |
1089 | } | |
7c832835 | 1090 | |
6e9624b8 AB |
1091 | static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode) |
1092 | { | |
1093 | int ret; | |
1094 | ||
2a48fc0a | 1095 | mutex_lock(&cciss_mutex); |
6e9624b8 | 1096 | ret = cciss_open(bdev, mode); |
2a48fc0a | 1097 | mutex_unlock(&cciss_mutex); |
6e9624b8 AB |
1098 | |
1099 | return ret; | |
1100 | } | |
1101 | ||
1da177e4 LT |
1102 | /* |
1103 | * Close. Sync first. | |
1104 | */ | |
ef7822c2 | 1105 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
1da177e4 | 1106 | { |
f70dba83 | 1107 | ctlr_info_t *h; |
6e9624b8 | 1108 | drive_info_struct *drv; |
1da177e4 | 1109 | |
2a48fc0a | 1110 | mutex_lock(&cciss_mutex); |
f70dba83 | 1111 | h = get_host(disk); |
6e9624b8 | 1112 | drv = get_drv(disk); |
b2a4a43d | 1113 | dev_dbg(&h->pdev->dev, "cciss_release %s\n", disk->disk_name); |
1da177e4 | 1114 | drv->usage_count--; |
f70dba83 | 1115 | h->usage_count--; |
2a48fc0a | 1116 | mutex_unlock(&cciss_mutex); |
1da177e4 LT |
1117 | return 0; |
1118 | } | |
1119 | ||
ef7822c2 AV |
1120 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
1121 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1122 | { |
1123 | int ret; | |
2a48fc0a | 1124 | mutex_lock(&cciss_mutex); |
ef7822c2 | 1125 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
2a48fc0a | 1126 | mutex_unlock(&cciss_mutex); |
1da177e4 LT |
1127 | return ret; |
1128 | } | |
1129 | ||
8a6cfeb6 AB |
1130 | #ifdef CONFIG_COMPAT |
1131 | ||
ef7822c2 AV |
1132 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
1133 | unsigned cmd, unsigned long arg); | |
1134 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, | |
1135 | unsigned cmd, unsigned long arg); | |
1da177e4 | 1136 | |
ef7822c2 AV |
1137 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
1138 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1139 | { |
1140 | switch (cmd) { | |
1141 | case CCISS_GETPCIINFO: | |
1142 | case CCISS_GETINTINFO: | |
1143 | case CCISS_SETINTINFO: | |
1144 | case CCISS_GETNODENAME: | |
1145 | case CCISS_SETNODENAME: | |
1146 | case CCISS_GETHEARTBEAT: | |
1147 | case CCISS_GETBUSTYPES: | |
1148 | case CCISS_GETFIRMVER: | |
1149 | case CCISS_GETDRIVVER: | |
1150 | case CCISS_REVALIDVOLS: | |
1151 | case CCISS_DEREGDISK: | |
1152 | case CCISS_REGNEWDISK: | |
1153 | case CCISS_REGNEWD: | |
1154 | case CCISS_RESCANDISK: | |
1155 | case CCISS_GETLUNINFO: | |
ef7822c2 | 1156 | return do_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
1157 | |
1158 | case CCISS_PASSTHRU32: | |
ef7822c2 | 1159 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
1da177e4 | 1160 | case CCISS_BIG_PASSTHRU32: |
ef7822c2 | 1161 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
1da177e4 LT |
1162 | |
1163 | default: | |
1164 | return -ENOIOCTLCMD; | |
1165 | } | |
1166 | } | |
1167 | ||
ef7822c2 AV |
1168 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
1169 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1170 | { |
1171 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 1172 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
1173 | IOCTL_Command_struct arg64; |
1174 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
1175 | int err; | |
1176 | u32 cp; | |
1177 | ||
1178 | err = 0; | |
7c832835 BH |
1179 | err |= |
1180 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1181 | sizeof(arg64.LUN_info)); | |
1182 | err |= | |
1183 | copy_from_user(&arg64.Request, &arg32->Request, | |
1184 | sizeof(arg64.Request)); | |
1185 | err |= | |
1186 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1187 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1188 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1189 | err |= get_user(cp, &arg32->buf); | |
1190 | arg64.buf = compat_ptr(cp); | |
1191 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1192 | ||
1193 | if (err) | |
1194 | return -EFAULT; | |
1195 | ||
ef7822c2 | 1196 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1197 | if (err) |
1198 | return err; | |
7c832835 BH |
1199 | err |= |
1200 | copy_in_user(&arg32->error_info, &p->error_info, | |
1201 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1202 | if (err) |
1203 | return -EFAULT; | |
1204 | return err; | |
1205 | } | |
1206 | ||
ef7822c2 AV |
1207 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
1208 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1209 | { |
1210 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 1211 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 1212 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
1213 | BIG_IOCTL_Command_struct __user *p = |
1214 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
1215 | int err; |
1216 | u32 cp; | |
1217 | ||
7ab5118d | 1218 | memset(&arg64, 0, sizeof(arg64)); |
1da177e4 | 1219 | err = 0; |
7c832835 BH |
1220 | err |= |
1221 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1222 | sizeof(arg64.LUN_info)); | |
1223 | err |= | |
1224 | copy_from_user(&arg64.Request, &arg32->Request, | |
1225 | sizeof(arg64.Request)); | |
1226 | err |= | |
1227 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1228 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1229 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1230 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
1231 | err |= get_user(cp, &arg32->buf); | |
1232 | arg64.buf = compat_ptr(cp); | |
1233 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1234 | ||
1235 | if (err) | |
7c832835 | 1236 | return -EFAULT; |
1da177e4 | 1237 | |
ef7822c2 | 1238 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1239 | if (err) |
1240 | return err; | |
7c832835 BH |
1241 | err |= |
1242 | copy_in_user(&arg32->error_info, &p->error_info, | |
1243 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1244 | if (err) |
1245 | return -EFAULT; | |
1246 | return err; | |
1247 | } | |
1248 | #endif | |
a885c8c4 CH |
1249 | |
1250 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
1251 | { | |
1252 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1253 | ||
1254 | if (!drv->cylinders) | |
1255 | return -ENXIO; | |
1256 | ||
1257 | geo->heads = drv->heads; | |
1258 | geo->sectors = drv->sectors; | |
1259 | geo->cylinders = drv->cylinders; | |
1260 | return 0; | |
1261 | } | |
1262 | ||
f70dba83 | 1263 | static void check_ioctl_unit_attention(ctlr_info_t *h, CommandList_struct *c) |
0a9279cc MM |
1264 | { |
1265 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
1266 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) | |
f70dba83 | 1267 | (void)check_for_unit_attention(h, c); |
0a9279cc | 1268 | } |
0a25a5ae SC |
1269 | |
1270 | static int cciss_getpciinfo(ctlr_info_t *h, void __user *argp) | |
1da177e4 | 1271 | { |
0a25a5ae | 1272 | cciss_pci_info_struct pciinfo; |
1da177e4 | 1273 | |
0a25a5ae SC |
1274 | if (!argp) |
1275 | return -EINVAL; | |
1276 | pciinfo.domain = pci_domain_nr(h->pdev->bus); | |
1277 | pciinfo.bus = h->pdev->bus->number; | |
1278 | pciinfo.dev_fn = h->pdev->devfn; | |
1279 | pciinfo.board_id = h->board_id; | |
1280 | if (copy_to_user(argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
1281 | return -EFAULT; | |
1282 | return 0; | |
1283 | } | |
1da177e4 | 1284 | |
576e661c SC |
1285 | static int cciss_getintinfo(ctlr_info_t *h, void __user *argp) |
1286 | { | |
1287 | cciss_coalint_struct intinfo; | |
1da177e4 | 1288 | |
576e661c SC |
1289 | if (!argp) |
1290 | return -EINVAL; | |
1291 | intinfo.delay = readl(&h->cfgtable->HostWrite.CoalIntDelay); | |
1292 | intinfo.count = readl(&h->cfgtable->HostWrite.CoalIntCount); | |
1293 | if (copy_to_user | |
1294 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
1295 | return -EFAULT; | |
1296 | return 0; | |
1297 | } | |
1da177e4 | 1298 | |
4c800eed SC |
1299 | static int cciss_setintinfo(ctlr_info_t *h, void __user *argp) |
1300 | { | |
1301 | cciss_coalint_struct intinfo; | |
1302 | unsigned long flags; | |
1303 | int i; | |
1da177e4 | 1304 | |
4c800eed SC |
1305 | if (!argp) |
1306 | return -EINVAL; | |
1307 | if (!capable(CAP_SYS_ADMIN)) | |
1308 | return -EPERM; | |
1309 | if (copy_from_user(&intinfo, argp, sizeof(intinfo))) | |
1310 | return -EFAULT; | |
1311 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
1312 | return -EINVAL; | |
1313 | spin_lock_irqsave(&h->lock, flags); | |
1314 | /* Update the field, and then ring the doorbell */ | |
1315 | writel(intinfo.delay, &(h->cfgtable->HostWrite.CoalIntDelay)); | |
1316 | writel(intinfo.count, &(h->cfgtable->HostWrite.CoalIntCount)); | |
1317 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
1318 | ||
1319 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1320 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) | |
1321 | break; | |
1322 | udelay(1000); /* delay and try again */ | |
1323 | } | |
1324 | spin_unlock_irqrestore(&h->lock, flags); | |
1325 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1326 | return -EAGAIN; | |
1327 | return 0; | |
1328 | } | |
1da177e4 | 1329 | |
25216109 SC |
1330 | static int cciss_getnodename(ctlr_info_t *h, void __user *argp) |
1331 | { | |
1332 | NodeName_type NodeName; | |
1333 | int i; | |
1da177e4 | 1334 | |
25216109 SC |
1335 | if (!argp) |
1336 | return -EINVAL; | |
1337 | for (i = 0; i < 16; i++) | |
1338 | NodeName[i] = readb(&h->cfgtable->ServerName[i]); | |
1339 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
1340 | return -EFAULT; | |
1341 | return 0; | |
1342 | } | |
7c832835 | 1343 | |
4f43f32c SC |
1344 | static int cciss_setnodename(ctlr_info_t *h, void __user *argp) |
1345 | { | |
1346 | NodeName_type NodeName; | |
1347 | unsigned long flags; | |
1348 | int i; | |
7c832835 | 1349 | |
4f43f32c SC |
1350 | if (!argp) |
1351 | return -EINVAL; | |
1352 | if (!capable(CAP_SYS_ADMIN)) | |
1353 | return -EPERM; | |
1354 | if (copy_from_user(NodeName, argp, sizeof(NodeName_type))) | |
1355 | return -EFAULT; | |
1356 | spin_lock_irqsave(&h->lock, flags); | |
1357 | /* Update the field, and then ring the doorbell */ | |
1358 | for (i = 0; i < 16; i++) | |
1359 | writeb(NodeName[i], &h->cfgtable->ServerName[i]); | |
1360 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
1361 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1362 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) | |
1363 | break; | |
1364 | udelay(1000); /* delay and try again */ | |
1365 | } | |
1366 | spin_unlock_irqrestore(&h->lock, flags); | |
1367 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1368 | return -EAGAIN; | |
1369 | return 0; | |
1370 | } | |
7c832835 | 1371 | |
93c74931 SC |
1372 | static int cciss_getheartbeat(ctlr_info_t *h, void __user *argp) |
1373 | { | |
1374 | Heartbeat_type heartbeat; | |
7c832835 | 1375 | |
93c74931 SC |
1376 | if (!argp) |
1377 | return -EINVAL; | |
1378 | heartbeat = readl(&h->cfgtable->HeartBeat); | |
1379 | if (copy_to_user(argp, &heartbeat, sizeof(Heartbeat_type))) | |
1380 | return -EFAULT; | |
1381 | return 0; | |
1382 | } | |
0a9279cc | 1383 | |
d18dfad4 SC |
1384 | static int cciss_getbustypes(ctlr_info_t *h, void __user *argp) |
1385 | { | |
1386 | BusTypes_type BusTypes; | |
7c832835 | 1387 | |
d18dfad4 SC |
1388 | if (!argp) |
1389 | return -EINVAL; | |
1390 | BusTypes = readl(&h->cfgtable->BusTypes); | |
1391 | if (copy_to_user(argp, &BusTypes, sizeof(BusTypes_type))) | |
1392 | return -EFAULT; | |
1393 | return 0; | |
1394 | } | |
1395 | ||
8a4f7fbf SC |
1396 | static int cciss_getfirmver(ctlr_info_t *h, void __user *argp) |
1397 | { | |
1398 | FirmwareVer_type firmware; | |
1399 | ||
1400 | if (!argp) | |
1401 | return -EINVAL; | |
1402 | memcpy(firmware, h->firm_ver, 4); | |
1403 | ||
1404 | if (copy_to_user | |
1405 | (argp, firmware, sizeof(FirmwareVer_type))) | |
1406 | return -EFAULT; | |
1407 | return 0; | |
1408 | } | |
1409 | ||
c525919d SC |
1410 | static int cciss_getdrivver(ctlr_info_t *h, void __user *argp) |
1411 | { | |
1412 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1413 | ||
1414 | if (!argp) | |
1415 | return -EINVAL; | |
1416 | if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) | |
1417 | return -EFAULT; | |
1418 | return 0; | |
1419 | } | |
1420 | ||
0894b32c SC |
1421 | static int cciss_getluninfo(ctlr_info_t *h, |
1422 | struct gendisk *disk, void __user *argp) | |
1423 | { | |
1424 | LogvolInfo_struct luninfo; | |
1425 | drive_info_struct *drv = get_drv(disk); | |
1426 | ||
1427 | if (!argp) | |
1428 | return -EINVAL; | |
1429 | memcpy(&luninfo.LunID, drv->LunID, sizeof(luninfo.LunID)); | |
1430 | luninfo.num_opens = drv->usage_count; | |
1431 | luninfo.num_parts = 0; | |
1432 | if (copy_to_user(argp, &luninfo, sizeof(LogvolInfo_struct))) | |
1433 | return -EFAULT; | |
1434 | return 0; | |
1435 | } | |
1436 | ||
f32f125b SC |
1437 | static int cciss_passthru(ctlr_info_t *h, void __user *argp) |
1438 | { | |
1439 | IOCTL_Command_struct iocommand; | |
1440 | CommandList_struct *c; | |
1441 | char *buff = NULL; | |
1442 | u64bit temp64; | |
1443 | DECLARE_COMPLETION_ONSTACK(wait); | |
1444 | ||
1445 | if (!argp) | |
1446 | return -EINVAL; | |
1447 | ||
1448 | if (!capable(CAP_SYS_RAWIO)) | |
1449 | return -EPERM; | |
1450 | ||
1451 | if (copy_from_user | |
1452 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
1453 | return -EFAULT; | |
1454 | if ((iocommand.buf_size < 1) && | |
1455 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
1456 | return -EINVAL; | |
1457 | } | |
1458 | if (iocommand.buf_size > 0) { | |
1459 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
1460 | if (buff == NULL) | |
1461 | return -EFAULT; | |
1462 | } | |
1463 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
1464 | /* Copy the data into the buffer we created */ | |
1465 | if (copy_from_user(buff, iocommand.buf, iocommand.buf_size)) { | |
1466 | kfree(buff); | |
1467 | return -EFAULT; | |
1468 | } | |
1469 | } else { | |
1470 | memset(buff, 0, iocommand.buf_size); | |
1471 | } | |
1472 | c = cmd_special_alloc(h); | |
1473 | if (!c) { | |
1474 | kfree(buff); | |
1475 | return -ENOMEM; | |
1476 | } | |
1477 | /* Fill in the command type */ | |
1478 | c->cmd_type = CMD_IOCTL_PEND; | |
1479 | /* Fill in Command Header */ | |
1480 | c->Header.ReplyQueue = 0; /* unused in simple mode */ | |
1481 | if (iocommand.buf_size > 0) { /* buffer to fill */ | |
1482 | c->Header.SGList = 1; | |
1483 | c->Header.SGTotal = 1; | |
1484 | } else { /* no buffers to fill */ | |
1485 | c->Header.SGList = 0; | |
1486 | c->Header.SGTotal = 0; | |
1487 | } | |
1488 | c->Header.LUN = iocommand.LUN_info; | |
1489 | /* use the kernel address the cmd block for tag */ | |
1490 | c->Header.Tag.lower = c->busaddr; | |
1491 | ||
1492 | /* Fill in Request block */ | |
1493 | c->Request = iocommand.Request; | |
1494 | ||
1495 | /* Fill in the scatter gather information */ | |
1496 | if (iocommand.buf_size > 0) { | |
1497 | temp64.val = pci_map_single(h->pdev, buff, | |
1498 | iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); | |
1499 | c->SG[0].Addr.lower = temp64.val32.lower; | |
1500 | c->SG[0].Addr.upper = temp64.val32.upper; | |
1501 | c->SG[0].Len = iocommand.buf_size; | |
1502 | c->SG[0].Ext = 0; /* we are not chaining */ | |
1503 | } | |
1504 | c->waiting = &wait; | |
1505 | ||
1506 | enqueue_cmd_and_start_io(h, c); | |
1507 | wait_for_completion(&wait); | |
1508 | ||
1509 | /* unlock the buffers from DMA */ | |
1510 | temp64.val32.lower = c->SG[0].Addr.lower; | |
1511 | temp64.val32.upper = c->SG[0].Addr.upper; | |
1512 | pci_unmap_single(h->pdev, (dma_addr_t) temp64.val, iocommand.buf_size, | |
1513 | PCI_DMA_BIDIRECTIONAL); | |
1514 | check_ioctl_unit_attention(h, c); | |
1515 | ||
1516 | /* Copy the error information out */ | |
1517 | iocommand.error_info = *(c->err_info); | |
1518 | if (copy_to_user(argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
1519 | kfree(buff); | |
1520 | cmd_special_free(h, c); | |
1521 | return -EFAULT; | |
1522 | } | |
1523 | ||
1524 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
1525 | /* Copy the data out of the buffer we created */ | |
1526 | if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) { | |
7c832835 | 1527 | kfree(buff); |
6b4d96b8 | 1528 | cmd_special_free(h, c); |
f32f125b | 1529 | return -EFAULT; |
1da177e4 | 1530 | } |
f32f125b SC |
1531 | } |
1532 | kfree(buff); | |
1533 | cmd_special_free(h, c); | |
1534 | return 0; | |
1535 | } | |
1536 | ||
0c9f5ba7 SC |
1537 | static int cciss_bigpassthru(ctlr_info_t *h, void __user *argp) |
1538 | { | |
1539 | BIG_IOCTL_Command_struct *ioc; | |
1540 | CommandList_struct *c; | |
1541 | unsigned char **buff = NULL; | |
1542 | int *buff_size = NULL; | |
1543 | u64bit temp64; | |
1544 | BYTE sg_used = 0; | |
1545 | int status = 0; | |
1546 | int i; | |
1547 | DECLARE_COMPLETION_ONSTACK(wait); | |
1548 | __u32 left; | |
1549 | __u32 sz; | |
1550 | BYTE __user *data_ptr; | |
1551 | ||
1552 | if (!argp) | |
1553 | return -EINVAL; | |
1554 | if (!capable(CAP_SYS_RAWIO)) | |
1555 | return -EPERM; | |
fcab1c11 | 1556 | ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); |
0c9f5ba7 SC |
1557 | if (!ioc) { |
1558 | status = -ENOMEM; | |
1559 | goto cleanup1; | |
1560 | } | |
1561 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1562 | status = -EFAULT; | |
1563 | goto cleanup1; | |
1564 | } | |
1565 | if ((ioc->buf_size < 1) && | |
1566 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1567 | status = -EINVAL; | |
1568 | goto cleanup1; | |
1569 | } | |
1570 | /* Check kmalloc limits using all SGs */ | |
1571 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1572 | status = -EINVAL; | |
1573 | goto cleanup1; | |
1574 | } | |
1575 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1576 | status = -EINVAL; | |
1577 | goto cleanup1; | |
1578 | } | |
1579 | buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1580 | if (!buff) { | |
1581 | status = -ENOMEM; | |
1582 | goto cleanup1; | |
1583 | } | |
1584 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL); | |
1585 | if (!buff_size) { | |
1586 | status = -ENOMEM; | |
1587 | goto cleanup1; | |
1588 | } | |
1589 | left = ioc->buf_size; | |
1590 | data_ptr = ioc->buf; | |
1591 | while (left) { | |
1592 | sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; | |
1593 | buff_size[sg_used] = sz; | |
1594 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1595 | if (buff[sg_used] == NULL) { | |
1596 | status = -ENOMEM; | |
1597 | goto cleanup1; | |
1598 | } | |
1599 | if (ioc->Request.Type.Direction == XFER_WRITE) { | |
1600 | if (copy_from_user(buff[sg_used], data_ptr, sz)) { | |
7c832835 BH |
1601 | status = -EFAULT; |
1602 | goto cleanup1; | |
1603 | } | |
0c9f5ba7 SC |
1604 | } else { |
1605 | memset(buff[sg_used], 0, sz); | |
1606 | } | |
1607 | left -= sz; | |
1608 | data_ptr += sz; | |
1609 | sg_used++; | |
1610 | } | |
1611 | c = cmd_special_alloc(h); | |
1612 | if (!c) { | |
1613 | status = -ENOMEM; | |
1614 | goto cleanup1; | |
1615 | } | |
1616 | c->cmd_type = CMD_IOCTL_PEND; | |
1617 | c->Header.ReplyQueue = 0; | |
fcfb5c0c SC |
1618 | c->Header.SGList = sg_used; |
1619 | c->Header.SGTotal = sg_used; | |
0c9f5ba7 SC |
1620 | c->Header.LUN = ioc->LUN_info; |
1621 | c->Header.Tag.lower = c->busaddr; | |
1622 | ||
1623 | c->Request = ioc->Request; | |
fcfb5c0c SC |
1624 | for (i = 0; i < sg_used; i++) { |
1625 | temp64.val = pci_map_single(h->pdev, buff[i], buff_size[i], | |
0c9f5ba7 | 1626 | PCI_DMA_BIDIRECTIONAL); |
fcfb5c0c SC |
1627 | c->SG[i].Addr.lower = temp64.val32.lower; |
1628 | c->SG[i].Addr.upper = temp64.val32.upper; | |
1629 | c->SG[i].Len = buff_size[i]; | |
1630 | c->SG[i].Ext = 0; /* we are not chaining */ | |
0c9f5ba7 SC |
1631 | } |
1632 | c->waiting = &wait; | |
1633 | enqueue_cmd_and_start_io(h, c); | |
1634 | wait_for_completion(&wait); | |
1635 | /* unlock the buffers from DMA */ | |
1636 | for (i = 0; i < sg_used; i++) { | |
1637 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1638 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1639 | pci_unmap_single(h->pdev, | |
1640 | (dma_addr_t) temp64.val, buff_size[i], | |
1641 | PCI_DMA_BIDIRECTIONAL); | |
1642 | } | |
1643 | check_ioctl_unit_attention(h, c); | |
1644 | /* Copy the error information out */ | |
1645 | ioc->error_info = *(c->err_info); | |
1646 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1647 | cmd_special_free(h, c); | |
1648 | status = -EFAULT; | |
1649 | goto cleanup1; | |
1650 | } | |
1651 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1652 | /* Copy the data out of the buffer we created */ | |
1653 | BYTE __user *ptr = ioc->buf; | |
1654 | for (i = 0; i < sg_used; i++) { | |
1655 | if (copy_to_user(ptr, buff[i], buff_size[i])) { | |
6b4d96b8 | 1656 | cmd_special_free(h, c); |
7c832835 BH |
1657 | status = -EFAULT; |
1658 | goto cleanup1; | |
1659 | } | |
0c9f5ba7 | 1660 | ptr += buff_size[i]; |
1da177e4 | 1661 | } |
0c9f5ba7 SC |
1662 | } |
1663 | cmd_special_free(h, c); | |
1664 | status = 0; | |
1665 | cleanup1: | |
1666 | if (buff) { | |
1667 | for (i = 0; i < sg_used; i++) | |
1668 | kfree(buff[i]); | |
1669 | kfree(buff); | |
1670 | } | |
1671 | kfree(buff_size); | |
1672 | kfree(ioc); | |
1673 | return status; | |
1674 | } | |
1675 | ||
ef7822c2 | 1676 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
c525919d | 1677 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1678 | { |
1da177e4 | 1679 | struct gendisk *disk = bdev->bd_disk; |
f70dba83 | 1680 | ctlr_info_t *h = get_host(disk); |
1da177e4 LT |
1681 | void __user *argp = (void __user *)arg; |
1682 | ||
b2a4a43d SC |
1683 | dev_dbg(&h->pdev->dev, "cciss_ioctl: Called with cmd=%x %lx\n", |
1684 | cmd, arg); | |
7c832835 | 1685 | switch (cmd) { |
1da177e4 | 1686 | case CCISS_GETPCIINFO: |
0a25a5ae | 1687 | return cciss_getpciinfo(h, argp); |
1da177e4 | 1688 | case CCISS_GETINTINFO: |
576e661c | 1689 | return cciss_getintinfo(h, argp); |
1da177e4 | 1690 | case CCISS_SETINTINFO: |
4c800eed | 1691 | return cciss_setintinfo(h, argp); |
1da177e4 | 1692 | case CCISS_GETNODENAME: |
25216109 | 1693 | return cciss_getnodename(h, argp); |
1da177e4 | 1694 | case CCISS_SETNODENAME: |
4f43f32c | 1695 | return cciss_setnodename(h, argp); |
1da177e4 | 1696 | case CCISS_GETHEARTBEAT: |
93c74931 | 1697 | return cciss_getheartbeat(h, argp); |
1da177e4 | 1698 | case CCISS_GETBUSTYPES: |
d18dfad4 | 1699 | return cciss_getbustypes(h, argp); |
1da177e4 | 1700 | case CCISS_GETFIRMVER: |
8a4f7fbf | 1701 | return cciss_getfirmver(h, argp); |
7c832835 | 1702 | case CCISS_GETDRIVVER: |
c525919d | 1703 | return cciss_getdrivver(h, argp); |
6ae5ce8e MM |
1704 | case CCISS_DEREGDISK: |
1705 | case CCISS_REGNEWD: | |
1da177e4 | 1706 | case CCISS_REVALIDVOLS: |
f70dba83 | 1707 | return rebuild_lun_table(h, 0, 1); |
0894b32c SC |
1708 | case CCISS_GETLUNINFO: |
1709 | return cciss_getluninfo(h, disk, argp); | |
1da177e4 | 1710 | case CCISS_PASSTHRU: |
f32f125b | 1711 | return cciss_passthru(h, argp); |
0c9f5ba7 SC |
1712 | case CCISS_BIG_PASSTHRU: |
1713 | return cciss_bigpassthru(h, argp); | |
03bbfee5 MMOD |
1714 | |
1715 | /* scsi_cmd_ioctl handles these, below, though some are not */ | |
1716 | /* very meaningful for cciss. SG_IO is the main one people want. */ | |
1717 | ||
1718 | case SG_GET_VERSION_NUM: | |
1719 | case SG_SET_TIMEOUT: | |
1720 | case SG_GET_TIMEOUT: | |
1721 | case SG_GET_RESERVED_SIZE: | |
1722 | case SG_SET_RESERVED_SIZE: | |
1723 | case SG_EMULATED_HOST: | |
1724 | case SG_IO: | |
1725 | case SCSI_IOCTL_SEND_COMMAND: | |
ef7822c2 | 1726 | return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
03bbfee5 MMOD |
1727 | |
1728 | /* scsi_cmd_ioctl would normally handle these, below, but */ | |
1729 | /* they aren't a good fit for cciss, as CD-ROMs are */ | |
1730 | /* not supported, and we don't have any bus/target/lun */ | |
1731 | /* which we present to the kernel. */ | |
1732 | ||
1733 | case CDROM_SEND_PACKET: | |
1734 | case CDROMCLOSETRAY: | |
1735 | case CDROMEJECT: | |
1736 | case SCSI_IOCTL_GET_IDLUN: | |
1737 | case SCSI_IOCTL_GET_BUS_NUMBER: | |
1da177e4 LT |
1738 | default: |
1739 | return -ENOTTY; | |
1740 | } | |
1da177e4 LT |
1741 | } |
1742 | ||
7b30f092 JA |
1743 | static void cciss_check_queues(ctlr_info_t *h) |
1744 | { | |
1745 | int start_queue = h->next_to_run; | |
1746 | int i; | |
1747 | ||
1748 | /* check to see if we have maxed out the number of commands that can | |
1749 | * be placed on the queue. If so then exit. We do this check here | |
1750 | * in case the interrupt we serviced was from an ioctl and did not | |
1751 | * free any new commands. | |
1752 | */ | |
f880632f | 1753 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1754 | return; |
1755 | ||
1756 | /* We have room on the queue for more commands. Now we need to queue | |
1757 | * them up. We will also keep track of the next queue to run so | |
1758 | * that every queue gets a chance to be started first. | |
1759 | */ | |
1760 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1761 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1762 | /* make sure the disk has been added and the drive is real | |
1763 | * because this can be called from the middle of init_one. | |
1764 | */ | |
9cef0d2f SC |
1765 | if (!h->drv[curr_queue]) |
1766 | continue; | |
1767 | if (!(h->drv[curr_queue]->queue) || | |
1768 | !(h->drv[curr_queue]->heads)) | |
7b30f092 JA |
1769 | continue; |
1770 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1771 | ||
1772 | /* check to see if we have maxed out the number of commands | |
1773 | * that can be placed on the queue. | |
1774 | */ | |
f880632f | 1775 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1776 | if (curr_queue == start_queue) { |
1777 | h->next_to_run = | |
1778 | (start_queue + 1) % (h->highest_lun + 1); | |
1779 | break; | |
1780 | } else { | |
1781 | h->next_to_run = curr_queue; | |
1782 | break; | |
1783 | } | |
7b30f092 JA |
1784 | } |
1785 | } | |
1786 | } | |
1787 | ||
ca1e0484 MM |
1788 | static void cciss_softirq_done(struct request *rq) |
1789 | { | |
f70dba83 SC |
1790 | CommandList_struct *c = rq->completion_data; |
1791 | ctlr_info_t *h = hba[c->ctlr]; | |
1792 | SGDescriptor_struct *curr_sg = c->SG; | |
ca1e0484 | 1793 | u64bit temp64; |
664a717d | 1794 | unsigned long flags; |
ca1e0484 | 1795 | int i, ddir; |
5c07a311 | 1796 | int sg_index = 0; |
ca1e0484 | 1797 | |
f70dba83 | 1798 | if (c->Request.Type.Direction == XFER_READ) |
ca1e0484 MM |
1799 | ddir = PCI_DMA_FROMDEVICE; |
1800 | else | |
1801 | ddir = PCI_DMA_TODEVICE; | |
1802 | ||
1803 | /* command did not need to be retried */ | |
1804 | /* unmap the DMA mapping for all the scatter gather elements */ | |
f70dba83 | 1805 | for (i = 0; i < c->Header.SGList; i++) { |
5c07a311 | 1806 | if (curr_sg[sg_index].Ext == CCISS_SG_CHAIN) { |
f70dba83 | 1807 | cciss_unmap_sg_chain_block(h, c); |
5c07a311 | 1808 | /* Point to the next block */ |
f70dba83 | 1809 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
5c07a311 DB |
1810 | sg_index = 0; |
1811 | } | |
1812 | temp64.val32.lower = curr_sg[sg_index].Addr.lower; | |
1813 | temp64.val32.upper = curr_sg[sg_index].Addr.upper; | |
1814 | pci_unmap_page(h->pdev, temp64.val, curr_sg[sg_index].Len, | |
1815 | ddir); | |
1816 | ++sg_index; | |
ca1e0484 MM |
1817 | } |
1818 | ||
b2a4a43d | 1819 | dev_dbg(&h->pdev->dev, "Done with %p\n", rq); |
ca1e0484 | 1820 | |
c3a4d78c | 1821 | /* set the residual count for pc requests */ |
33659ebb | 1822 | if (rq->cmd_type == REQ_TYPE_BLOCK_PC) |
f70dba83 | 1823 | rq->resid_len = c->err_info->ResidualCnt; |
ac44e5b2 | 1824 | |
c3a4d78c | 1825 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
3daeea29 | 1826 | |
ca1e0484 | 1827 | spin_lock_irqsave(&h->lock, flags); |
6b4d96b8 | 1828 | cmd_free(h, c); |
7b30f092 | 1829 | cciss_check_queues(h); |
ca1e0484 MM |
1830 | spin_unlock_irqrestore(&h->lock, flags); |
1831 | } | |
1832 | ||
39ccf9a6 SC |
1833 | static inline void log_unit_to_scsi3addr(ctlr_info_t *h, |
1834 | unsigned char scsi3addr[], uint32_t log_unit) | |
b57695fe | 1835 | { |
9cef0d2f SC |
1836 | memcpy(scsi3addr, h->drv[log_unit]->LunID, |
1837 | sizeof(h->drv[log_unit]->LunID)); | |
b57695fe | 1838 | } |
1839 | ||
7fe06326 AP |
1840 | /* This function gets the SCSI vendor, model, and revision of a logical drive |
1841 | * via the inquiry page 0. Model, vendor, and rev are set to empty strings if | |
1842 | * they cannot be read. | |
1843 | */ | |
f70dba83 | 1844 | static void cciss_get_device_descr(ctlr_info_t *h, int logvol, |
7fe06326 AP |
1845 | char *vendor, char *model, char *rev) |
1846 | { | |
1847 | int rc; | |
1848 | InquiryData_struct *inq_buf; | |
b57695fe | 1849 | unsigned char scsi3addr[8]; |
7fe06326 AP |
1850 | |
1851 | *vendor = '\0'; | |
1852 | *model = '\0'; | |
1853 | *rev = '\0'; | |
1854 | ||
1855 | inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
1856 | if (!inq_buf) | |
1857 | return; | |
1858 | ||
f70dba83 SC |
1859 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
1860 | rc = sendcmd_withirq(h, CISS_INQUIRY, inq_buf, sizeof(*inq_buf), 0, | |
7b838bde | 1861 | scsi3addr, TYPE_CMD); |
7fe06326 AP |
1862 | if (rc == IO_OK) { |
1863 | memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); | |
1864 | vendor[VENDOR_LEN] = '\0'; | |
1865 | memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); | |
1866 | model[MODEL_LEN] = '\0'; | |
1867 | memcpy(rev, &inq_buf->data_byte[32], REV_LEN); | |
1868 | rev[REV_LEN] = '\0'; | |
1869 | } | |
1870 | ||
1871 | kfree(inq_buf); | |
1872 | return; | |
1873 | } | |
1874 | ||
a72da29b MM |
1875 | /* This function gets the serial number of a logical drive via |
1876 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial | |
1877 | * number cannot be had, for whatever reason, 16 bytes of 0xff | |
1878 | * are returned instead. | |
1879 | */ | |
f70dba83 | 1880 | static void cciss_get_serial_no(ctlr_info_t *h, int logvol, |
a72da29b MM |
1881 | unsigned char *serial_no, int buflen) |
1882 | { | |
1883 | #define PAGE_83_INQ_BYTES 64 | |
1884 | int rc; | |
1885 | unsigned char *buf; | |
b57695fe | 1886 | unsigned char scsi3addr[8]; |
a72da29b MM |
1887 | |
1888 | if (buflen > 16) | |
1889 | buflen = 16; | |
1890 | memset(serial_no, 0xff, buflen); | |
1891 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); | |
1892 | if (!buf) | |
1893 | return; | |
1894 | memset(serial_no, 0, buflen); | |
f70dba83 SC |
1895 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
1896 | rc = sendcmd_withirq(h, CISS_INQUIRY, buf, | |
7b838bde | 1897 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
a72da29b MM |
1898 | if (rc == IO_OK) |
1899 | memcpy(serial_no, &buf[8], buflen); | |
1900 | kfree(buf); | |
1901 | return; | |
1902 | } | |
1903 | ||
617e1344 SC |
1904 | /* |
1905 | * cciss_add_disk sets up the block device queue for a logical drive | |
1906 | */ | |
1907 | static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, | |
6ae5ce8e MM |
1908 | int drv_index) |
1909 | { | |
1910 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); | |
e8074f79 SC |
1911 | if (!disk->queue) |
1912 | goto init_queue_failure; | |
6ae5ce8e MM |
1913 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); |
1914 | disk->major = h->major; | |
1915 | disk->first_minor = drv_index << NWD_SHIFT; | |
1916 | disk->fops = &cciss_fops; | |
9cef0d2f SC |
1917 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
1918 | goto cleanup_queue; | |
1919 | disk->private_data = h->drv[drv_index]; | |
1920 | disk->driverfs_dev = &h->drv[drv_index]->dev; | |
6ae5ce8e MM |
1921 | |
1922 | /* Set up queue information */ | |
1923 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); | |
1924 | ||
1925 | /* This is a hardware imposed limit. */ | |
8a78362c | 1926 | blk_queue_max_segments(disk->queue, h->maxsgentries); |
6ae5ce8e | 1927 | |
086fa5ff | 1928 | blk_queue_max_hw_sectors(disk->queue, h->cciss_max_sectors); |
6ae5ce8e MM |
1929 | |
1930 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); | |
1931 | ||
1932 | disk->queue->queuedata = h; | |
1933 | ||
e1defc4f | 1934 | blk_queue_logical_block_size(disk->queue, |
9cef0d2f | 1935 | h->drv[drv_index]->block_size); |
6ae5ce8e MM |
1936 | |
1937 | /* Make sure all queue data is written out before */ | |
9cef0d2f | 1938 | /* setting h->drv[drv_index]->queue, as setting this */ |
6ae5ce8e MM |
1939 | /* allows the interrupt handler to start the queue */ |
1940 | wmb(); | |
9cef0d2f | 1941 | h->drv[drv_index]->queue = disk->queue; |
6ae5ce8e | 1942 | add_disk(disk); |
617e1344 SC |
1943 | return 0; |
1944 | ||
1945 | cleanup_queue: | |
1946 | blk_cleanup_queue(disk->queue); | |
1947 | disk->queue = NULL; | |
e8074f79 | 1948 | init_queue_failure: |
617e1344 | 1949 | return -1; |
6ae5ce8e MM |
1950 | } |
1951 | ||
ddd47442 | 1952 | /* This function will check the usage_count of the drive to be updated/added. |
a72da29b MM |
1953 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
1954 | * the drive's capacity, geometry, or serial number has changed, | |
1955 | * then the drive information will be updated and the disk will be | |
1956 | * re-registered with the kernel. If these conditions don't hold, | |
1957 | * then it will be left alone for the next reboot. The exception to this | |
1958 | * is disk 0 which will always be left registered with the kernel since it | |
1959 | * is also the controller node. Any changes to disk 0 will show up on | |
1960 | * the next reboot. | |
7c832835 | 1961 | */ |
f70dba83 SC |
1962 | static void cciss_update_drive_info(ctlr_info_t *h, int drv_index, |
1963 | int first_time, int via_ioctl) | |
7c832835 | 1964 | { |
ddd47442 | 1965 | struct gendisk *disk; |
ddd47442 MM |
1966 | InquiryData_struct *inq_buff = NULL; |
1967 | unsigned int block_size; | |
00988a35 | 1968 | sector_t total_size; |
ddd47442 MM |
1969 | unsigned long flags = 0; |
1970 | int ret = 0; | |
a72da29b MM |
1971 | drive_info_struct *drvinfo; |
1972 | ||
1973 | /* Get information about the disk and modify the driver structure */ | |
1974 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
9cef0d2f | 1975 | drvinfo = kzalloc(sizeof(*drvinfo), GFP_KERNEL); |
a72da29b MM |
1976 | if (inq_buff == NULL || drvinfo == NULL) |
1977 | goto mem_msg; | |
1978 | ||
1979 | /* testing to see if 16-byte CDBs are already being used */ | |
1980 | if (h->cciss_read == CCISS_READ_16) { | |
f70dba83 | 1981 | cciss_read_capacity_16(h, drv_index, |
a72da29b MM |
1982 | &total_size, &block_size); |
1983 | ||
1984 | } else { | |
f70dba83 | 1985 | cciss_read_capacity(h, drv_index, &total_size, &block_size); |
a72da29b MM |
1986 | /* if read_capacity returns all F's this volume is >2TB */ |
1987 | /* in size so we switch to 16-byte CDB's for all */ | |
1988 | /* read/write ops */ | |
1989 | if (total_size == 0xFFFFFFFFULL) { | |
f70dba83 | 1990 | cciss_read_capacity_16(h, drv_index, |
a72da29b MM |
1991 | &total_size, &block_size); |
1992 | h->cciss_read = CCISS_READ_16; | |
1993 | h->cciss_write = CCISS_WRITE_16; | |
1994 | } else { | |
1995 | h->cciss_read = CCISS_READ_10; | |
1996 | h->cciss_write = CCISS_WRITE_10; | |
1997 | } | |
1998 | } | |
1999 | ||
f70dba83 | 2000 | cciss_geometry_inquiry(h, drv_index, total_size, block_size, |
a72da29b MM |
2001 | inq_buff, drvinfo); |
2002 | drvinfo->block_size = block_size; | |
2003 | drvinfo->nr_blocks = total_size + 1; | |
2004 | ||
f70dba83 | 2005 | cciss_get_device_descr(h, drv_index, drvinfo->vendor, |
7fe06326 | 2006 | drvinfo->model, drvinfo->rev); |
f70dba83 | 2007 | cciss_get_serial_no(h, drv_index, drvinfo->serial_no, |
a72da29b | 2008 | sizeof(drvinfo->serial_no)); |
9cef0d2f SC |
2009 | /* Save the lunid in case we deregister the disk, below. */ |
2010 | memcpy(drvinfo->LunID, h->drv[drv_index]->LunID, | |
2011 | sizeof(drvinfo->LunID)); | |
a72da29b MM |
2012 | |
2013 | /* Is it the same disk we already know, and nothing's changed? */ | |
9cef0d2f | 2014 | if (h->drv[drv_index]->raid_level != -1 && |
a72da29b | 2015 | ((memcmp(drvinfo->serial_no, |
9cef0d2f SC |
2016 | h->drv[drv_index]->serial_no, 16) == 0) && |
2017 | drvinfo->block_size == h->drv[drv_index]->block_size && | |
2018 | drvinfo->nr_blocks == h->drv[drv_index]->nr_blocks && | |
2019 | drvinfo->heads == h->drv[drv_index]->heads && | |
2020 | drvinfo->sectors == h->drv[drv_index]->sectors && | |
2021 | drvinfo->cylinders == h->drv[drv_index]->cylinders)) | |
a72da29b MM |
2022 | /* The disk is unchanged, nothing to update */ |
2023 | goto freeret; | |
a72da29b | 2024 | |
6ae5ce8e MM |
2025 | /* If we get here it's not the same disk, or something's changed, |
2026 | * so we need to * deregister it, and re-register it, if it's not | |
2027 | * in use. | |
2028 | * If the disk already exists then deregister it before proceeding | |
2029 | * (unless it's the first disk (for the controller node). | |
2030 | */ | |
9cef0d2f | 2031 | if (h->drv[drv_index]->raid_level != -1 && drv_index != 0) { |
b2a4a43d | 2032 | dev_warn(&h->pdev->dev, "disk %d has changed.\n", drv_index); |
f70dba83 | 2033 | spin_lock_irqsave(&h->lock, flags); |
9cef0d2f | 2034 | h->drv[drv_index]->busy_configuring = 1; |
f70dba83 | 2035 | spin_unlock_irqrestore(&h->lock, flags); |
e14ac670 | 2036 | |
9cef0d2f | 2037 | /* deregister_disk sets h->drv[drv_index]->queue = NULL |
6ae5ce8e MM |
2038 | * which keeps the interrupt handler from starting |
2039 | * the queue. | |
2040 | */ | |
2d11d993 | 2041 | ret = deregister_disk(h, drv_index, 0, via_ioctl); |
ddd47442 MM |
2042 | } |
2043 | ||
2044 | /* If the disk is in use return */ | |
2045 | if (ret) | |
a72da29b MM |
2046 | goto freeret; |
2047 | ||
6ae5ce8e | 2048 | /* Save the new information from cciss_geometry_inquiry |
9cef0d2f SC |
2049 | * and serial number inquiry. If the disk was deregistered |
2050 | * above, then h->drv[drv_index] will be NULL. | |
6ae5ce8e | 2051 | */ |
9cef0d2f SC |
2052 | if (h->drv[drv_index] == NULL) { |
2053 | drvinfo->device_initialized = 0; | |
2054 | h->drv[drv_index] = drvinfo; | |
2055 | drvinfo = NULL; /* so it won't be freed below. */ | |
2056 | } else { | |
2057 | /* special case for cxd0 */ | |
2058 | h->drv[drv_index]->block_size = drvinfo->block_size; | |
2059 | h->drv[drv_index]->nr_blocks = drvinfo->nr_blocks; | |
2060 | h->drv[drv_index]->heads = drvinfo->heads; | |
2061 | h->drv[drv_index]->sectors = drvinfo->sectors; | |
2062 | h->drv[drv_index]->cylinders = drvinfo->cylinders; | |
2063 | h->drv[drv_index]->raid_level = drvinfo->raid_level; | |
2064 | memcpy(h->drv[drv_index]->serial_no, drvinfo->serial_no, 16); | |
2065 | memcpy(h->drv[drv_index]->vendor, drvinfo->vendor, | |
2066 | VENDOR_LEN + 1); | |
2067 | memcpy(h->drv[drv_index]->model, drvinfo->model, MODEL_LEN + 1); | |
2068 | memcpy(h->drv[drv_index]->rev, drvinfo->rev, REV_LEN + 1); | |
2069 | } | |
ddd47442 MM |
2070 | |
2071 | ++h->num_luns; | |
2072 | disk = h->gendisk[drv_index]; | |
9cef0d2f | 2073 | set_capacity(disk, h->drv[drv_index]->nr_blocks); |
ddd47442 | 2074 | |
6ae5ce8e MM |
2075 | /* If it's not disk 0 (drv_index != 0) |
2076 | * or if it was disk 0, but there was previously | |
2077 | * no actual corresponding configured logical drive | |
2078 | * (raid_leve == -1) then we want to update the | |
2079 | * logical drive's information. | |
2080 | */ | |
361e9b07 SC |
2081 | if (drv_index || first_time) { |
2082 | if (cciss_add_disk(h, disk, drv_index) != 0) { | |
2083 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 2084 | cciss_free_drive_info(h, drv_index); |
b2a4a43d SC |
2085 | dev_warn(&h->pdev->dev, "could not update disk %d\n", |
2086 | drv_index); | |
361e9b07 SC |
2087 | --h->num_luns; |
2088 | } | |
2089 | } | |
ddd47442 | 2090 | |
6ae5ce8e | 2091 | freeret: |
ddd47442 | 2092 | kfree(inq_buff); |
a72da29b | 2093 | kfree(drvinfo); |
ddd47442 | 2094 | return; |
6ae5ce8e | 2095 | mem_msg: |
b2a4a43d | 2096 | dev_err(&h->pdev->dev, "out of memory\n"); |
ddd47442 MM |
2097 | goto freeret; |
2098 | } | |
2099 | ||
2100 | /* This function will find the first index of the controllers drive array | |
9cef0d2f SC |
2101 | * that has a null drv pointer and allocate the drive info struct and |
2102 | * will return that index This is where new drives will be added. | |
2103 | * If the index to be returned is greater than the highest_lun index for | |
2104 | * the controller then highest_lun is set * to this new index. | |
2105 | * If there are no available indexes or if tha allocation fails, then -1 | |
2106 | * is returned. * "controller_node" is used to know if this is a real | |
2107 | * logical drive, or just the controller node, which determines if this | |
2108 | * counts towards highest_lun. | |
7c832835 | 2109 | */ |
9cef0d2f | 2110 | static int cciss_alloc_drive_info(ctlr_info_t *h, int controller_node) |
ddd47442 MM |
2111 | { |
2112 | int i; | |
9cef0d2f | 2113 | drive_info_struct *drv; |
ddd47442 | 2114 | |
9cef0d2f | 2115 | /* Search for an empty slot for our drive info */ |
7c832835 | 2116 | for (i = 0; i < CISS_MAX_LUN; i++) { |
9cef0d2f SC |
2117 | |
2118 | /* if not cxd0 case, and it's occupied, skip it. */ | |
2119 | if (h->drv[i] && i != 0) | |
2120 | continue; | |
2121 | /* | |
2122 | * If it's cxd0 case, and drv is alloc'ed already, and a | |
2123 | * disk is configured there, skip it. | |
2124 | */ | |
2125 | if (i == 0 && h->drv[i] && h->drv[i]->raid_level != -1) | |
2126 | continue; | |
2127 | ||
2128 | /* | |
2129 | * We've found an empty slot. Update highest_lun | |
2130 | * provided this isn't just the fake cxd0 controller node. | |
2131 | */ | |
2132 | if (i > h->highest_lun && !controller_node) | |
2133 | h->highest_lun = i; | |
2134 | ||
2135 | /* If adding a real disk at cxd0, and it's already alloc'ed */ | |
2136 | if (i == 0 && h->drv[i] != NULL) | |
ddd47442 | 2137 | return i; |
9cef0d2f SC |
2138 | |
2139 | /* | |
2140 | * Found an empty slot, not already alloc'ed. Allocate it. | |
2141 | * Mark it with raid_level == -1, so we know it's new later on. | |
2142 | */ | |
2143 | drv = kzalloc(sizeof(*drv), GFP_KERNEL); | |
2144 | if (!drv) | |
2145 | return -1; | |
2146 | drv->raid_level = -1; /* so we know it's new */ | |
2147 | h->drv[i] = drv; | |
2148 | return i; | |
ddd47442 MM |
2149 | } |
2150 | return -1; | |
2151 | } | |
2152 | ||
9cef0d2f SC |
2153 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index) |
2154 | { | |
2155 | kfree(h->drv[drv_index]); | |
2156 | h->drv[drv_index] = NULL; | |
2157 | } | |
2158 | ||
361e9b07 SC |
2159 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index) |
2160 | { | |
2161 | put_disk(h->gendisk[drv_index]); | |
2162 | h->gendisk[drv_index] = NULL; | |
2163 | } | |
2164 | ||
6ae5ce8e MM |
2165 | /* cciss_add_gendisk finds a free hba[]->drv structure |
2166 | * and allocates a gendisk if needed, and sets the lunid | |
2167 | * in the drvinfo structure. It returns the index into | |
2168 | * the ->drv[] array, or -1 if none are free. | |
2169 | * is_controller_node indicates whether highest_lun should | |
2170 | * count this disk, or if it's only being added to provide | |
2171 | * a means to talk to the controller in case no logical | |
2172 | * drives have yet been configured. | |
2173 | */ | |
39ccf9a6 SC |
2174 | static int cciss_add_gendisk(ctlr_info_t *h, unsigned char lunid[], |
2175 | int controller_node) | |
6ae5ce8e MM |
2176 | { |
2177 | int drv_index; | |
2178 | ||
9cef0d2f | 2179 | drv_index = cciss_alloc_drive_info(h, controller_node); |
6ae5ce8e MM |
2180 | if (drv_index == -1) |
2181 | return -1; | |
8ce51966 | 2182 | |
6ae5ce8e MM |
2183 | /*Check if the gendisk needs to be allocated */ |
2184 | if (!h->gendisk[drv_index]) { | |
2185 | h->gendisk[drv_index] = | |
2186 | alloc_disk(1 << NWD_SHIFT); | |
2187 | if (!h->gendisk[drv_index]) { | |
b2a4a43d SC |
2188 | dev_err(&h->pdev->dev, |
2189 | "could not allocate a new disk %d\n", | |
2190 | drv_index); | |
9cef0d2f | 2191 | goto err_free_drive_info; |
6ae5ce8e MM |
2192 | } |
2193 | } | |
9cef0d2f SC |
2194 | memcpy(h->drv[drv_index]->LunID, lunid, |
2195 | sizeof(h->drv[drv_index]->LunID)); | |
2196 | if (cciss_create_ld_sysfs_entry(h, drv_index)) | |
7fe06326 | 2197 | goto err_free_disk; |
6ae5ce8e MM |
2198 | /* Don't need to mark this busy because nobody */ |
2199 | /* else knows about this disk yet to contend */ | |
2200 | /* for access to it. */ | |
9cef0d2f | 2201 | h->drv[drv_index]->busy_configuring = 0; |
6ae5ce8e MM |
2202 | wmb(); |
2203 | return drv_index; | |
7fe06326 AP |
2204 | |
2205 | err_free_disk: | |
361e9b07 | 2206 | cciss_free_gendisk(h, drv_index); |
9cef0d2f SC |
2207 | err_free_drive_info: |
2208 | cciss_free_drive_info(h, drv_index); | |
7fe06326 | 2209 | return -1; |
6ae5ce8e MM |
2210 | } |
2211 | ||
2212 | /* This is for the special case of a controller which | |
2213 | * has no logical drives. In this case, we still need | |
2214 | * to register a disk so the controller can be accessed | |
2215 | * by the Array Config Utility. | |
2216 | */ | |
2217 | static void cciss_add_controller_node(ctlr_info_t *h) | |
2218 | { | |
2219 | struct gendisk *disk; | |
2220 | int drv_index; | |
2221 | ||
2222 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ | |
2223 | return; | |
2224 | ||
39ccf9a6 | 2225 | drv_index = cciss_add_gendisk(h, CTLR_LUNID, 1); |
361e9b07 SC |
2226 | if (drv_index == -1) |
2227 | goto error; | |
9cef0d2f SC |
2228 | h->drv[drv_index]->block_size = 512; |
2229 | h->drv[drv_index]->nr_blocks = 0; | |
2230 | h->drv[drv_index]->heads = 0; | |
2231 | h->drv[drv_index]->sectors = 0; | |
2232 | h->drv[drv_index]->cylinders = 0; | |
2233 | h->drv[drv_index]->raid_level = -1; | |
2234 | memset(h->drv[drv_index]->serial_no, 0, 16); | |
6ae5ce8e | 2235 | disk = h->gendisk[drv_index]; |
361e9b07 SC |
2236 | if (cciss_add_disk(h, disk, drv_index) == 0) |
2237 | return; | |
2238 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 2239 | cciss_free_drive_info(h, drv_index); |
361e9b07 | 2240 | error: |
b2a4a43d | 2241 | dev_warn(&h->pdev->dev, "could not add disk 0.\n"); |
361e9b07 | 2242 | return; |
6ae5ce8e MM |
2243 | } |
2244 | ||
ddd47442 | 2245 | /* This function will add and remove logical drives from the Logical |
d14c4ab5 | 2246 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
2247 | * so that mount points are preserved until the next reboot. This allows |
2248 | * for the removal of logical drives in the middle of the drive array | |
2249 | * without a re-ordering of those drives. | |
2250 | * INPUT | |
2251 | * h = The controller to perform the operations on | |
7c832835 | 2252 | */ |
2d11d993 SC |
2253 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, |
2254 | int via_ioctl) | |
1da177e4 | 2255 | { |
ddd47442 MM |
2256 | int num_luns; |
2257 | ReportLunData_struct *ld_buff = NULL; | |
ddd47442 MM |
2258 | int return_code; |
2259 | int listlength = 0; | |
2260 | int i; | |
2261 | int drv_found; | |
2262 | int drv_index = 0; | |
39ccf9a6 | 2263 | unsigned char lunid[8] = CTLR_LUNID; |
1da177e4 | 2264 | unsigned long flags; |
ddd47442 | 2265 | |
6ae5ce8e MM |
2266 | if (!capable(CAP_SYS_RAWIO)) |
2267 | return -EPERM; | |
2268 | ||
ddd47442 | 2269 | /* Set busy_configuring flag for this operation */ |
f70dba83 | 2270 | spin_lock_irqsave(&h->lock, flags); |
7c832835 | 2271 | if (h->busy_configuring) { |
f70dba83 | 2272 | spin_unlock_irqrestore(&h->lock, flags); |
ddd47442 MM |
2273 | return -EBUSY; |
2274 | } | |
2275 | h->busy_configuring = 1; | |
f70dba83 | 2276 | spin_unlock_irqrestore(&h->lock, flags); |
ddd47442 | 2277 | |
a72da29b MM |
2278 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
2279 | if (ld_buff == NULL) | |
2280 | goto mem_msg; | |
2281 | ||
f70dba83 | 2282 | return_code = sendcmd_withirq(h, CISS_REPORT_LOG, ld_buff, |
b57695fe | 2283 | sizeof(ReportLunData_struct), |
2284 | 0, CTLR_LUNID, TYPE_CMD); | |
ddd47442 | 2285 | |
a72da29b MM |
2286 | if (return_code == IO_OK) |
2287 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); | |
2288 | else { /* reading number of logical volumes failed */ | |
b2a4a43d SC |
2289 | dev_warn(&h->pdev->dev, |
2290 | "report logical volume command failed\n"); | |
a72da29b MM |
2291 | listlength = 0; |
2292 | goto freeret; | |
2293 | } | |
2294 | ||
2295 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
2296 | if (num_luns > CISS_MAX_LUN) { | |
2297 | num_luns = CISS_MAX_LUN; | |
b2a4a43d | 2298 | dev_warn(&h->pdev->dev, "more luns configured" |
a72da29b MM |
2299 | " on controller than can be handled by" |
2300 | " this driver.\n"); | |
2301 | } | |
2302 | ||
6ae5ce8e MM |
2303 | if (num_luns == 0) |
2304 | cciss_add_controller_node(h); | |
2305 | ||
2306 | /* Compare controller drive array to driver's drive array | |
2307 | * to see if any drives are missing on the controller due | |
2308 | * to action of Array Config Utility (user deletes drive) | |
2309 | * and deregister logical drives which have disappeared. | |
2310 | */ | |
a72da29b MM |
2311 | for (i = 0; i <= h->highest_lun; i++) { |
2312 | int j; | |
2313 | drv_found = 0; | |
d8a0be6a SC |
2314 | |
2315 | /* skip holes in the array from already deleted drives */ | |
9cef0d2f | 2316 | if (h->drv[i] == NULL) |
d8a0be6a SC |
2317 | continue; |
2318 | ||
a72da29b | 2319 | for (j = 0; j < num_luns; j++) { |
39ccf9a6 | 2320 | memcpy(lunid, &ld_buff->LUN[j][0], sizeof(lunid)); |
9cef0d2f | 2321 | if (memcmp(h->drv[i]->LunID, lunid, |
39ccf9a6 | 2322 | sizeof(lunid)) == 0) { |
a72da29b MM |
2323 | drv_found = 1; |
2324 | break; | |
2325 | } | |
2326 | } | |
2327 | if (!drv_found) { | |
2328 | /* Deregister it from the OS, it's gone. */ | |
f70dba83 | 2329 | spin_lock_irqsave(&h->lock, flags); |
9cef0d2f | 2330 | h->drv[i]->busy_configuring = 1; |
f70dba83 | 2331 | spin_unlock_irqrestore(&h->lock, flags); |
2d11d993 | 2332 | return_code = deregister_disk(h, i, 1, via_ioctl); |
9cef0d2f SC |
2333 | if (h->drv[i] != NULL) |
2334 | h->drv[i]->busy_configuring = 0; | |
ddd47442 | 2335 | } |
a72da29b | 2336 | } |
ddd47442 | 2337 | |
a72da29b MM |
2338 | /* Compare controller drive array to driver's drive array. |
2339 | * Check for updates in the drive information and any new drives | |
2340 | * on the controller due to ACU adding logical drives, or changing | |
2341 | * a logical drive's size, etc. Reregister any new/changed drives | |
2342 | */ | |
2343 | for (i = 0; i < num_luns; i++) { | |
2344 | int j; | |
ddd47442 | 2345 | |
a72da29b | 2346 | drv_found = 0; |
ddd47442 | 2347 | |
39ccf9a6 | 2348 | memcpy(lunid, &ld_buff->LUN[i][0], sizeof(lunid)); |
a72da29b MM |
2349 | /* Find if the LUN is already in the drive array |
2350 | * of the driver. If so then update its info | |
2351 | * if not in use. If it does not exist then find | |
2352 | * the first free index and add it. | |
2353 | */ | |
2354 | for (j = 0; j <= h->highest_lun; j++) { | |
9cef0d2f SC |
2355 | if (h->drv[j] != NULL && |
2356 | memcmp(h->drv[j]->LunID, lunid, | |
2357 | sizeof(h->drv[j]->LunID)) == 0) { | |
a72da29b MM |
2358 | drv_index = j; |
2359 | drv_found = 1; | |
2360 | break; | |
ddd47442 | 2361 | } |
a72da29b | 2362 | } |
ddd47442 | 2363 | |
a72da29b MM |
2364 | /* check if the drive was found already in the array */ |
2365 | if (!drv_found) { | |
eece695f | 2366 | drv_index = cciss_add_gendisk(h, lunid, 0); |
a72da29b MM |
2367 | if (drv_index == -1) |
2368 | goto freeret; | |
a72da29b | 2369 | } |
f70dba83 | 2370 | cciss_update_drive_info(h, drv_index, first_time, via_ioctl); |
a72da29b | 2371 | } /* end for */ |
ddd47442 | 2372 | |
6ae5ce8e | 2373 | freeret: |
ddd47442 MM |
2374 | kfree(ld_buff); |
2375 | h->busy_configuring = 0; | |
2376 | /* We return -1 here to tell the ACU that we have registered/updated | |
2377 | * all of the drives that we can and to keep it from calling us | |
2378 | * additional times. | |
7c832835 | 2379 | */ |
ddd47442 | 2380 | return -1; |
6ae5ce8e | 2381 | mem_msg: |
b2a4a43d | 2382 | dev_err(&h->pdev->dev, "out of memory\n"); |
a72da29b | 2383 | h->busy_configuring = 0; |
ddd47442 MM |
2384 | goto freeret; |
2385 | } | |
2386 | ||
9ddb27b4 SC |
2387 | static void cciss_clear_drive_info(drive_info_struct *drive_info) |
2388 | { | |
2389 | /* zero out the disk size info */ | |
2390 | drive_info->nr_blocks = 0; | |
2391 | drive_info->block_size = 0; | |
2392 | drive_info->heads = 0; | |
2393 | drive_info->sectors = 0; | |
2394 | drive_info->cylinders = 0; | |
2395 | drive_info->raid_level = -1; | |
2396 | memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no)); | |
2397 | memset(drive_info->model, 0, sizeof(drive_info->model)); | |
2398 | memset(drive_info->rev, 0, sizeof(drive_info->rev)); | |
2399 | memset(drive_info->vendor, 0, sizeof(drive_info->vendor)); | |
2400 | /* | |
2401 | * don't clear the LUNID though, we need to remember which | |
2402 | * one this one is. | |
2403 | */ | |
2404 | } | |
2405 | ||
ddd47442 MM |
2406 | /* This function will deregister the disk and it's queue from the |
2407 | * kernel. It must be called with the controller lock held and the | |
2408 | * drv structures busy_configuring flag set. It's parameters are: | |
2409 | * | |
2410 | * disk = This is the disk to be deregistered | |
2411 | * drv = This is the drive_info_struct associated with the disk to be | |
2412 | * deregistered. It contains information about the disk used | |
2413 | * by the driver. | |
2414 | * clear_all = This flag determines whether or not the disk information | |
2415 | * is going to be completely cleared out and the highest_lun | |
2416 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 2417 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
2418 | * the highest_lun should be left unchanged and the LunID |
2419 | * should not be cleared. | |
2d11d993 SC |
2420 | * via_ioctl |
2421 | * This indicates whether we've reached this path via ioctl. | |
2422 | * This affects the maximum usage count allowed for c0d0 to be messed with. | |
2423 | * If this path is reached via ioctl(), then the max_usage_count will | |
2424 | * be 1, as the process calling ioctl() has got to have the device open. | |
2425 | * If we get here via sysfs, then the max usage count will be zero. | |
ddd47442 | 2426 | */ |
a0ea8622 | 2427 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
2d11d993 | 2428 | int clear_all, int via_ioctl) |
ddd47442 | 2429 | { |
799202cb | 2430 | int i; |
a0ea8622 SC |
2431 | struct gendisk *disk; |
2432 | drive_info_struct *drv; | |
9cef0d2f | 2433 | int recalculate_highest_lun; |
1da177e4 LT |
2434 | |
2435 | if (!capable(CAP_SYS_RAWIO)) | |
2436 | return -EPERM; | |
2437 | ||
9cef0d2f | 2438 | drv = h->drv[drv_index]; |
a0ea8622 SC |
2439 | disk = h->gendisk[drv_index]; |
2440 | ||
1da177e4 | 2441 | /* make sure logical volume is NOT is use */ |
7c832835 | 2442 | if (clear_all || (h->gendisk[0] == disk)) { |
2d11d993 | 2443 | if (drv->usage_count > via_ioctl) |
7c832835 BH |
2444 | return -EBUSY; |
2445 | } else if (drv->usage_count > 0) | |
2446 | return -EBUSY; | |
1da177e4 | 2447 | |
9cef0d2f SC |
2448 | recalculate_highest_lun = (drv == h->drv[h->highest_lun]); |
2449 | ||
ddd47442 MM |
2450 | /* invalidate the devices and deregister the disk. If it is disk |
2451 | * zero do not deregister it but just zero out it's values. This | |
2452 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
2453 | */ |
2454 | if (h->gendisk[0] != disk) { | |
5a9df732 | 2455 | struct request_queue *q = disk->queue; |
097d0264 | 2456 | if (disk->flags & GENHD_FL_UP) { |
8ce51966 | 2457 | cciss_destroy_ld_sysfs_entry(h, drv_index, 0); |
5a9df732 | 2458 | del_gendisk(disk); |
5a9df732 | 2459 | } |
9cef0d2f | 2460 | if (q) |
5a9df732 | 2461 | blk_cleanup_queue(q); |
5a9df732 AB |
2462 | /* If clear_all is set then we are deleting the logical |
2463 | * drive, not just refreshing its info. For drives | |
2464 | * other than disk 0 we will call put_disk. We do not | |
2465 | * do this for disk 0 as we need it to be able to | |
2466 | * configure the controller. | |
a72da29b | 2467 | */ |
5a9df732 AB |
2468 | if (clear_all){ |
2469 | /* This isn't pretty, but we need to find the | |
2470 | * disk in our array and NULL our the pointer. | |
2471 | * This is so that we will call alloc_disk if | |
2472 | * this index is used again later. | |
a72da29b | 2473 | */ |
5a9df732 | 2474 | for (i=0; i < CISS_MAX_LUN; i++){ |
a72da29b | 2475 | if (h->gendisk[i] == disk) { |
5a9df732 AB |
2476 | h->gendisk[i] = NULL; |
2477 | break; | |
799202cb | 2478 | } |
799202cb | 2479 | } |
5a9df732 | 2480 | put_disk(disk); |
ddd47442 | 2481 | } |
799202cb MM |
2482 | } else { |
2483 | set_capacity(disk, 0); | |
9cef0d2f | 2484 | cciss_clear_drive_info(drv); |
ddd47442 MM |
2485 | } |
2486 | ||
2487 | --h->num_luns; | |
ddd47442 | 2488 | |
9cef0d2f SC |
2489 | /* if it was the last disk, find the new hightest lun */ |
2490 | if (clear_all && recalculate_highest_lun) { | |
c2d45b4d | 2491 | int newhighest = -1; |
9cef0d2f SC |
2492 | for (i = 0; i <= h->highest_lun; i++) { |
2493 | /* if the disk has size > 0, it is available */ | |
2494 | if (h->drv[i] && h->drv[i]->heads) | |
2495 | newhighest = i; | |
1da177e4 | 2496 | } |
9cef0d2f | 2497 | h->highest_lun = newhighest; |
ddd47442 | 2498 | } |
e2019b58 | 2499 | return 0; |
1da177e4 | 2500 | } |
ddd47442 | 2501 | |
5afe2781 SC |
2502 | static int __devinit cciss_send_reset(ctlr_info_t *h, unsigned char *scsi3addr, |
2503 | u8 reset_type) | |
2504 | { | |
2505 | CommandList_struct *c; | |
2506 | int return_status; | |
2507 | ||
2508 | c = cmd_alloc(h); | |
2509 | if (!c) | |
2510 | return -ENOMEM; | |
2511 | return_status = fill_cmd(h, c, CCISS_RESET_MSG, NULL, 0, 0, | |
2512 | CTLR_LUNID, TYPE_MSG); | |
2513 | c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */ | |
2514 | if (return_status != IO_OK) { | |
2515 | cmd_special_free(h, c); | |
2516 | return return_status; | |
2517 | } | |
2518 | c->waiting = NULL; | |
2519 | enqueue_cmd_and_start_io(h, c); | |
2520 | /* Don't wait for completion, the reset won't complete. Don't free | |
2521 | * the command either. This is the last command we will send before | |
2522 | * re-initializing everything, so it doesn't matter and won't leak. | |
2523 | */ | |
2524 | return 0; | |
2525 | } | |
2526 | ||
f70dba83 | 2527 | static int fill_cmd(ctlr_info_t *h, CommandList_struct *c, __u8 cmd, void *buff, |
b57695fe | 2528 | size_t size, __u8 page_code, unsigned char *scsi3addr, |
2529 | int cmd_type) | |
1da177e4 | 2530 | { |
1da177e4 LT |
2531 | u64bit buff_dma_handle; |
2532 | int status = IO_OK; | |
2533 | ||
2534 | c->cmd_type = CMD_IOCTL_PEND; | |
2535 | c->Header.ReplyQueue = 0; | |
7c832835 | 2536 | if (buff != NULL) { |
1da177e4 | 2537 | c->Header.SGList = 1; |
7c832835 | 2538 | c->Header.SGTotal = 1; |
1da177e4 LT |
2539 | } else { |
2540 | c->Header.SGList = 0; | |
7c832835 | 2541 | c->Header.SGTotal = 0; |
1da177e4 LT |
2542 | } |
2543 | c->Header.Tag.lower = c->busaddr; | |
b57695fe | 2544 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
1da177e4 LT |
2545 | |
2546 | c->Request.Type.Type = cmd_type; | |
2547 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
2548 | switch (cmd) { |
2549 | case CISS_INQUIRY: | |
1da177e4 | 2550 | /* are we trying to read a vital product page */ |
7c832835 | 2551 | if (page_code != 0) { |
1da177e4 LT |
2552 | c->Request.CDB[1] = 0x01; |
2553 | c->Request.CDB[2] = page_code; | |
2554 | } | |
2555 | c->Request.CDBLen = 6; | |
7c832835 | 2556 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
2557 | c->Request.Type.Direction = XFER_READ; |
2558 | c->Request.Timeout = 0; | |
7c832835 BH |
2559 | c->Request.CDB[0] = CISS_INQUIRY; |
2560 | c->Request.CDB[4] = size & 0xFF; | |
2561 | break; | |
1da177e4 LT |
2562 | case CISS_REPORT_LOG: |
2563 | case CISS_REPORT_PHYS: | |
7c832835 | 2564 | /* Talking to controller so It's a physical command |
1da177e4 | 2565 | mode = 00 target = 0. Nothing to write. |
7c832835 | 2566 | */ |
1da177e4 LT |
2567 | c->Request.CDBLen = 12; |
2568 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2569 | c->Request.Type.Direction = XFER_READ; | |
2570 | c->Request.Timeout = 0; | |
2571 | c->Request.CDB[0] = cmd; | |
b028461d | 2572 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ |
1da177e4 LT |
2573 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
2574 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
2575 | c->Request.CDB[9] = size & 0xFF; | |
2576 | break; | |
2577 | ||
2578 | case CCISS_READ_CAPACITY: | |
1da177e4 LT |
2579 | c->Request.CDBLen = 10; |
2580 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2581 | c->Request.Type.Direction = XFER_READ; | |
2582 | c->Request.Timeout = 0; | |
2583 | c->Request.CDB[0] = cmd; | |
7c832835 | 2584 | break; |
00988a35 | 2585 | case CCISS_READ_CAPACITY_16: |
00988a35 MMOD |
2586 | c->Request.CDBLen = 16; |
2587 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2588 | c->Request.Type.Direction = XFER_READ; | |
2589 | c->Request.Timeout = 0; | |
2590 | c->Request.CDB[0] = cmd; | |
2591 | c->Request.CDB[1] = 0x10; | |
2592 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
2593 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
2594 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
2595 | c->Request.CDB[13] = size & 0xFF; | |
2596 | c->Request.Timeout = 0; | |
2597 | c->Request.CDB[0] = cmd; | |
2598 | break; | |
1da177e4 LT |
2599 | case CCISS_CACHE_FLUSH: |
2600 | c->Request.CDBLen = 12; | |
2601 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2602 | c->Request.Type.Direction = XFER_WRITE; | |
2603 | c->Request.Timeout = 0; | |
2604 | c->Request.CDB[0] = BMIC_WRITE; | |
2605 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 2606 | break; |
88f627ae | 2607 | case TEST_UNIT_READY: |
88f627ae SC |
2608 | c->Request.CDBLen = 6; |
2609 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2610 | c->Request.Type.Direction = XFER_NONE; | |
2611 | c->Request.Timeout = 0; | |
2612 | break; | |
1da177e4 | 2613 | default: |
b2a4a43d | 2614 | dev_warn(&h->pdev->dev, "Unknown Command 0x%c\n", cmd); |
e2019b58 | 2615 | return IO_ERROR; |
1da177e4 LT |
2616 | } |
2617 | } else if (cmd_type == TYPE_MSG) { | |
2618 | switch (cmd) { | |
8f71bb82 | 2619 | case CCISS_ABORT_MSG: |
3da8b713 | 2620 | c->Request.CDBLen = 12; |
2621 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2622 | c->Request.Type.Direction = XFER_WRITE; | |
2623 | c->Request.Timeout = 0; | |
7c832835 BH |
2624 | c->Request.CDB[0] = cmd; /* abort */ |
2625 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 2626 | /* buff contains the tag of the command to abort */ |
2627 | memcpy(&c->Request.CDB[4], buff, 8); | |
2628 | break; | |
8f71bb82 | 2629 | case CCISS_RESET_MSG: |
88f627ae | 2630 | c->Request.CDBLen = 16; |
3da8b713 | 2631 | c->Request.Type.Attribute = ATTR_SIMPLE; |
88f627ae | 2632 | c->Request.Type.Direction = XFER_NONE; |
3da8b713 | 2633 | c->Request.Timeout = 0; |
2634 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 | 2635 | c->Request.CDB[0] = cmd; /* reset */ |
8f71bb82 | 2636 | c->Request.CDB[1] = CCISS_RESET_TYPE_TARGET; |
00988a35 | 2637 | break; |
8f71bb82 | 2638 | case CCISS_NOOP_MSG: |
1da177e4 LT |
2639 | c->Request.CDBLen = 1; |
2640 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2641 | c->Request.Type.Direction = XFER_WRITE; | |
2642 | c->Request.Timeout = 0; | |
2643 | c->Request.CDB[0] = cmd; | |
2644 | break; | |
2645 | default: | |
b2a4a43d SC |
2646 | dev_warn(&h->pdev->dev, |
2647 | "unknown message type %d\n", cmd); | |
1da177e4 LT |
2648 | return IO_ERROR; |
2649 | } | |
2650 | } else { | |
b2a4a43d | 2651 | dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); |
1da177e4 LT |
2652 | return IO_ERROR; |
2653 | } | |
2654 | /* Fill in the scatter gather information */ | |
2655 | if (size > 0) { | |
2656 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
2657 | buff, size, |
2658 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
2659 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
2660 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
2661 | c->SG[0].Len = size; | |
7c832835 | 2662 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
2663 | } |
2664 | return status; | |
2665 | } | |
7c832835 | 2666 | |
3c2ab402 | 2667 | static int check_target_status(ctlr_info_t *h, CommandList_struct *c) |
2668 | { | |
2669 | switch (c->err_info->ScsiStatus) { | |
2670 | case SAM_STAT_GOOD: | |
2671 | return IO_OK; | |
2672 | case SAM_STAT_CHECK_CONDITION: | |
2673 | switch (0xf & c->err_info->SenseInfo[2]) { | |
2674 | case 0: return IO_OK; /* no sense */ | |
2675 | case 1: return IO_OK; /* recovered error */ | |
2676 | default: | |
c08fac65 SC |
2677 | if (check_for_unit_attention(h, c)) |
2678 | return IO_NEEDS_RETRY; | |
b2a4a43d | 2679 | dev_warn(&h->pdev->dev, "cmd 0x%02x " |
3c2ab402 | 2680 | "check condition, sense key = 0x%02x\n", |
b2a4a43d | 2681 | c->Request.CDB[0], c->err_info->SenseInfo[2]); |
3c2ab402 | 2682 | } |
2683 | break; | |
2684 | default: | |
b2a4a43d SC |
2685 | dev_warn(&h->pdev->dev, "cmd 0x%02x" |
2686 | "scsi status = 0x%02x\n", | |
3c2ab402 | 2687 | c->Request.CDB[0], c->err_info->ScsiStatus); |
2688 | break; | |
2689 | } | |
2690 | return IO_ERROR; | |
2691 | } | |
2692 | ||
789a424a | 2693 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 | 2694 | { |
5390cfc3 | 2695 | int return_status = IO_OK; |
7c832835 | 2696 | |
789a424a | 2697 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
2698 | return IO_OK; | |
5390cfc3 | 2699 | |
2700 | switch (c->err_info->CommandStatus) { | |
2701 | case CMD_TARGET_STATUS: | |
3c2ab402 | 2702 | return_status = check_target_status(h, c); |
5390cfc3 | 2703 | break; |
2704 | case CMD_DATA_UNDERRUN: | |
2705 | case CMD_DATA_OVERRUN: | |
2706 | /* expected for inquiry and report lun commands */ | |
2707 | break; | |
2708 | case CMD_INVALID: | |
b2a4a43d | 2709 | dev_warn(&h->pdev->dev, "cmd 0x%02x is " |
5390cfc3 | 2710 | "reported invalid\n", c->Request.CDB[0]); |
2711 | return_status = IO_ERROR; | |
2712 | break; | |
2713 | case CMD_PROTOCOL_ERR: | |
b2a4a43d SC |
2714 | dev_warn(&h->pdev->dev, "cmd 0x%02x has " |
2715 | "protocol error\n", c->Request.CDB[0]); | |
5390cfc3 | 2716 | return_status = IO_ERROR; |
2717 | break; | |
2718 | case CMD_HARDWARE_ERR: | |
b2a4a43d | 2719 | dev_warn(&h->pdev->dev, "cmd 0x%02x had " |
5390cfc3 | 2720 | " hardware error\n", c->Request.CDB[0]); |
2721 | return_status = IO_ERROR; | |
2722 | break; | |
2723 | case CMD_CONNECTION_LOST: | |
b2a4a43d | 2724 | dev_warn(&h->pdev->dev, "cmd 0x%02x had " |
5390cfc3 | 2725 | "connection lost\n", c->Request.CDB[0]); |
2726 | return_status = IO_ERROR; | |
2727 | break; | |
2728 | case CMD_ABORTED: | |
b2a4a43d | 2729 | dev_warn(&h->pdev->dev, "cmd 0x%02x was " |
5390cfc3 | 2730 | "aborted\n", c->Request.CDB[0]); |
2731 | return_status = IO_ERROR; | |
2732 | break; | |
2733 | case CMD_ABORT_FAILED: | |
b2a4a43d | 2734 | dev_warn(&h->pdev->dev, "cmd 0x%02x reports " |
5390cfc3 | 2735 | "abort failed\n", c->Request.CDB[0]); |
2736 | return_status = IO_ERROR; | |
2737 | break; | |
2738 | case CMD_UNSOLICITED_ABORT: | |
b2a4a43d | 2739 | dev_warn(&h->pdev->dev, "unsolicited abort 0x%02x\n", |
5390cfc3 | 2740 | c->Request.CDB[0]); |
789a424a | 2741 | return_status = IO_NEEDS_RETRY; |
5390cfc3 | 2742 | break; |
6d9a4f9e SC |
2743 | case CMD_UNABORTABLE: |
2744 | dev_warn(&h->pdev->dev, "cmd unabortable\n"); | |
2745 | return_status = IO_ERROR; | |
2746 | break; | |
5390cfc3 | 2747 | default: |
b2a4a43d | 2748 | dev_warn(&h->pdev->dev, "cmd 0x%02x returned " |
5390cfc3 | 2749 | "unknown status %x\n", c->Request.CDB[0], |
2750 | c->err_info->CommandStatus); | |
2751 | return_status = IO_ERROR; | |
7c832835 | 2752 | } |
789a424a | 2753 | return return_status; |
2754 | } | |
2755 | ||
2756 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, | |
2757 | int attempt_retry) | |
2758 | { | |
2759 | DECLARE_COMPLETION_ONSTACK(wait); | |
2760 | u64bit buff_dma_handle; | |
789a424a | 2761 | int return_status = IO_OK; |
2762 | ||
2763 | resend_cmd2: | |
2764 | c->waiting = &wait; | |
664a717d | 2765 | enqueue_cmd_and_start_io(h, c); |
789a424a | 2766 | |
2767 | wait_for_completion(&wait); | |
2768 | ||
2769 | if (c->err_info->CommandStatus == 0 || !attempt_retry) | |
2770 | goto command_done; | |
2771 | ||
2772 | return_status = process_sendcmd_error(h, c); | |
2773 | ||
2774 | if (return_status == IO_NEEDS_RETRY && | |
2775 | c->retry_count < MAX_CMD_RETRIES) { | |
b2a4a43d | 2776 | dev_warn(&h->pdev->dev, "retrying 0x%02x\n", |
789a424a | 2777 | c->Request.CDB[0]); |
2778 | c->retry_count++; | |
2779 | /* erase the old error information */ | |
2780 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2781 | return_status = IO_OK; | |
2782 | INIT_COMPLETION(wait); | |
2783 | goto resend_cmd2; | |
2784 | } | |
5390cfc3 | 2785 | |
2786 | command_done: | |
1da177e4 | 2787 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
2788 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2789 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
2790 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
2791 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
5390cfc3 | 2792 | return return_status; |
2793 | } | |
2794 | ||
f70dba83 | 2795 | static int sendcmd_withirq(ctlr_info_t *h, __u8 cmd, void *buff, size_t size, |
b57695fe | 2796 | __u8 page_code, unsigned char scsi3addr[], |
2797 | int cmd_type) | |
5390cfc3 | 2798 | { |
5390cfc3 | 2799 | CommandList_struct *c; |
2800 | int return_status; | |
2801 | ||
6b4d96b8 | 2802 | c = cmd_special_alloc(h); |
5390cfc3 | 2803 | if (!c) |
2804 | return -ENOMEM; | |
f70dba83 | 2805 | return_status = fill_cmd(h, c, cmd, buff, size, page_code, |
b57695fe | 2806 | scsi3addr, cmd_type); |
5390cfc3 | 2807 | if (return_status == IO_OK) |
789a424a | 2808 | return_status = sendcmd_withirq_core(h, c, 1); |
2809 | ||
6b4d96b8 | 2810 | cmd_special_free(h, c); |
7c832835 | 2811 | return return_status; |
1da177e4 | 2812 | } |
7c832835 | 2813 | |
f70dba83 | 2814 | static void cciss_geometry_inquiry(ctlr_info_t *h, int logvol, |
7b838bde | 2815 | sector_t total_size, |
7c832835 BH |
2816 | unsigned int block_size, |
2817 | InquiryData_struct *inq_buff, | |
2818 | drive_info_struct *drv) | |
1da177e4 LT |
2819 | { |
2820 | int return_code; | |
00988a35 | 2821 | unsigned long t; |
b57695fe | 2822 | unsigned char scsi3addr[8]; |
00988a35 | 2823 | |
1da177e4 | 2824 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
f70dba83 SC |
2825 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
2826 | return_code = sendcmd_withirq(h, CISS_INQUIRY, inq_buff, | |
7b838bde | 2827 | sizeof(*inq_buff), 0xC1, scsi3addr, TYPE_CMD); |
1da177e4 | 2828 | if (return_code == IO_OK) { |
7c832835 | 2829 | if (inq_buff->data_byte[8] == 0xFF) { |
b2a4a43d SC |
2830 | dev_warn(&h->pdev->dev, |
2831 | "reading geometry failed, volume " | |
7c832835 | 2832 | "does not support reading geometry\n"); |
1da177e4 | 2833 | drv->heads = 255; |
b028461d | 2834 | drv->sectors = 32; /* Sectors per track */ |
7f42d3b8 | 2835 | drv->cylinders = total_size + 1; |
89f97ad1 | 2836 | drv->raid_level = RAID_UNKNOWN; |
1da177e4 | 2837 | } else { |
1da177e4 LT |
2838 | drv->heads = inq_buff->data_byte[6]; |
2839 | drv->sectors = inq_buff->data_byte[7]; | |
2840 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
2841 | drv->cylinders += inq_buff->data_byte[5]; | |
2842 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
2843 | } |
2844 | drv->block_size = block_size; | |
97c06978 | 2845 | drv->nr_blocks = total_size + 1; |
3f7705ea MW |
2846 | t = drv->heads * drv->sectors; |
2847 | if (t > 1) { | |
97c06978 MMOD |
2848 | sector_t real_size = total_size + 1; |
2849 | unsigned long rem = sector_div(real_size, t); | |
3f7705ea | 2850 | if (rem) |
97c06978 MMOD |
2851 | real_size++; |
2852 | drv->cylinders = real_size; | |
1da177e4 | 2853 | } |
7c832835 | 2854 | } else { /* Get geometry failed */ |
b2a4a43d | 2855 | dev_warn(&h->pdev->dev, "reading geometry failed\n"); |
1da177e4 | 2856 | } |
1da177e4 | 2857 | } |
7c832835 | 2858 | |
1da177e4 | 2859 | static void |
f70dba83 | 2860 | cciss_read_capacity(ctlr_info_t *h, int logvol, sector_t *total_size, |
7c832835 | 2861 | unsigned int *block_size) |
1da177e4 | 2862 | { |
00988a35 | 2863 | ReadCapdata_struct *buf; |
1da177e4 | 2864 | int return_code; |
b57695fe | 2865 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2866 | |
2867 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); | |
2868 | if (!buf) { | |
b2a4a43d | 2869 | dev_warn(&h->pdev->dev, "out of memory\n"); |
00988a35 MMOD |
2870 | return; |
2871 | } | |
1aebe187 | 2872 | |
f70dba83 SC |
2873 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
2874 | return_code = sendcmd_withirq(h, CCISS_READ_CAPACITY, buf, | |
7b838bde | 2875 | sizeof(ReadCapdata_struct), 0, scsi3addr, TYPE_CMD); |
1da177e4 | 2876 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2877 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
2878 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
7c832835 | 2879 | } else { /* read capacity command failed */ |
b2a4a43d | 2880 | dev_warn(&h->pdev->dev, "read capacity failed\n"); |
1da177e4 LT |
2881 | *total_size = 0; |
2882 | *block_size = BLOCK_SIZE; | |
2883 | } | |
00988a35 | 2884 | kfree(buf); |
00988a35 MMOD |
2885 | } |
2886 | ||
f70dba83 | 2887 | static void cciss_read_capacity_16(ctlr_info_t *h, int logvol, |
7b838bde | 2888 | sector_t *total_size, unsigned int *block_size) |
00988a35 MMOD |
2889 | { |
2890 | ReadCapdata_struct_16 *buf; | |
2891 | int return_code; | |
b57695fe | 2892 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2893 | |
2894 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2895 | if (!buf) { | |
b2a4a43d | 2896 | dev_warn(&h->pdev->dev, "out of memory\n"); |
00988a35 MMOD |
2897 | return; |
2898 | } | |
1aebe187 | 2899 | |
f70dba83 SC |
2900 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
2901 | return_code = sendcmd_withirq(h, CCISS_READ_CAPACITY_16, | |
2902 | buf, sizeof(ReadCapdata_struct_16), | |
7b838bde | 2903 | 0, scsi3addr, TYPE_CMD); |
00988a35 | 2904 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2905 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
2906 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
00988a35 | 2907 | } else { /* read capacity command failed */ |
b2a4a43d | 2908 | dev_warn(&h->pdev->dev, "read capacity failed\n"); |
00988a35 MMOD |
2909 | *total_size = 0; |
2910 | *block_size = BLOCK_SIZE; | |
2911 | } | |
b2a4a43d | 2912 | dev_info(&h->pdev->dev, " blocks= %llu block_size= %d\n", |
97c06978 | 2913 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2914 | kfree(buf); |
1da177e4 LT |
2915 | } |
2916 | ||
1da177e4 LT |
2917 | static int cciss_revalidate(struct gendisk *disk) |
2918 | { | |
2919 | ctlr_info_t *h = get_host(disk); | |
2920 | drive_info_struct *drv = get_drv(disk); | |
2921 | int logvol; | |
7c832835 | 2922 | int FOUND = 0; |
1da177e4 | 2923 | unsigned int block_size; |
00988a35 | 2924 | sector_t total_size; |
1da177e4 LT |
2925 | InquiryData_struct *inq_buff = NULL; |
2926 | ||
68264e9d | 2927 | for (logvol = 0; logvol <= h->highest_lun; logvol++) { |
0fc13c89 | 2928 | if (!h->drv[logvol]) |
453434cf | 2929 | continue; |
9cef0d2f | 2930 | if (memcmp(h->drv[logvol]->LunID, drv->LunID, |
39ccf9a6 | 2931 | sizeof(drv->LunID)) == 0) { |
7c832835 | 2932 | FOUND = 1; |
1da177e4 LT |
2933 | break; |
2934 | } | |
2935 | } | |
2936 | ||
7c832835 BH |
2937 | if (!FOUND) |
2938 | return 1; | |
1da177e4 | 2939 | |
7c832835 BH |
2940 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2941 | if (inq_buff == NULL) { | |
b2a4a43d | 2942 | dev_warn(&h->pdev->dev, "out of memory\n"); |
7c832835 BH |
2943 | return 1; |
2944 | } | |
00988a35 | 2945 | if (h->cciss_read == CCISS_READ_10) { |
f70dba83 | 2946 | cciss_read_capacity(h, logvol, |
00988a35 MMOD |
2947 | &total_size, &block_size); |
2948 | } else { | |
f70dba83 | 2949 | cciss_read_capacity_16(h, logvol, |
00988a35 MMOD |
2950 | &total_size, &block_size); |
2951 | } | |
f70dba83 | 2952 | cciss_geometry_inquiry(h, logvol, total_size, block_size, |
7c832835 | 2953 | inq_buff, drv); |
1da177e4 | 2954 | |
e1defc4f | 2955 | blk_queue_logical_block_size(drv->queue, drv->block_size); |
1da177e4 LT |
2956 | set_capacity(disk, drv->nr_blocks); |
2957 | ||
1da177e4 LT |
2958 | kfree(inq_buff); |
2959 | return 0; | |
2960 | } | |
2961 | ||
1da177e4 LT |
2962 | /* |
2963 | * Map (physical) PCI mem into (virtual) kernel space | |
2964 | */ | |
2965 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2966 | { | |
7c832835 BH |
2967 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2968 | ulong page_offs = ((ulong) base) - page_base; | |
2969 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2970 | |
7c832835 | 2971 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2972 | } |
2973 | ||
7c832835 BH |
2974 | /* |
2975 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2976 | * the Q to wait for completion. | |
2977 | */ | |
2978 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
2979 | { |
2980 | CommandList_struct *c; | |
7c832835 | 2981 | |
e6e1ee93 JA |
2982 | while (!list_empty(&h->reqQ)) { |
2983 | c = list_entry(h->reqQ.next, CommandList_struct, list); | |
1da177e4 LT |
2984 | /* can't do anything if fifo is full */ |
2985 | if ((h->access.fifo_full(h))) { | |
b2a4a43d | 2986 | dev_warn(&h->pdev->dev, "fifo full\n"); |
1da177e4 LT |
2987 | break; |
2988 | } | |
2989 | ||
7c832835 | 2990 | /* Get the first entry from the Request Q */ |
8a3173de | 2991 | removeQ(c); |
1da177e4 | 2992 | h->Qdepth--; |
7c832835 BH |
2993 | |
2994 | /* Tell the controller execute command */ | |
1da177e4 | 2995 | h->access.submit_command(h, c); |
7c832835 BH |
2996 | |
2997 | /* Put job onto the completed Q */ | |
8a3173de | 2998 | addQ(&h->cmpQ, c); |
1da177e4 LT |
2999 | } |
3000 | } | |
7c832835 | 3001 | |
f70dba83 | 3002 | /* Assumes that h->lock is held. */ |
1da177e4 LT |
3003 | /* Zeros out the error record and then resends the command back */ |
3004 | /* to the controller */ | |
7c832835 | 3005 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
3006 | { |
3007 | /* erase the old error information */ | |
3008 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
3009 | ||
3010 | /* add it to software queue and then send it to the controller */ | |
8a3173de | 3011 | addQ(&h->reqQ, c); |
1da177e4 | 3012 | h->Qdepth++; |
7c832835 | 3013 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
3014 | h->maxQsinceinit = h->Qdepth; |
3015 | ||
3016 | start_io(h); | |
3017 | } | |
a9925a06 | 3018 | |
1a614f50 SC |
3019 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
3020 | unsigned int msg_byte, unsigned int host_byte, | |
3021 | unsigned int driver_byte) | |
3022 | { | |
3023 | /* inverse of macros in scsi.h */ | |
3024 | return (scsi_status_byte & 0xff) | | |
3025 | ((msg_byte & 0xff) << 8) | | |
3026 | ((host_byte & 0xff) << 16) | | |
3027 | ((driver_byte & 0xff) << 24); | |
3028 | } | |
3029 | ||
0a9279cc MM |
3030 | static inline int evaluate_target_status(ctlr_info_t *h, |
3031 | CommandList_struct *cmd, int *retry_cmd) | |
03bbfee5 MMOD |
3032 | { |
3033 | unsigned char sense_key; | |
1a614f50 SC |
3034 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
3035 | int error_value; | |
3036 | ||
0a9279cc | 3037 | *retry_cmd = 0; |
1a614f50 SC |
3038 | /* If we get in here, it means we got "target status", that is, scsi status */ |
3039 | status_byte = cmd->err_info->ScsiStatus; | |
3040 | driver_byte = DRIVER_OK; | |
3041 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ | |
3042 | ||
33659ebb | 3043 | if (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) |
1a614f50 SC |
3044 | host_byte = DID_PASSTHROUGH; |
3045 | else | |
3046 | host_byte = DID_OK; | |
3047 | ||
3048 | error_value = make_status_bytes(status_byte, msg_byte, | |
3049 | host_byte, driver_byte); | |
03bbfee5 | 3050 | |
1a614f50 | 3051 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
33659ebb | 3052 | if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) |
b2a4a43d | 3053 | dev_warn(&h->pdev->dev, "cmd %p " |
03bbfee5 MMOD |
3054 | "has SCSI Status 0x%x\n", |
3055 | cmd, cmd->err_info->ScsiStatus); | |
1a614f50 | 3056 | return error_value; |
03bbfee5 MMOD |
3057 | } |
3058 | ||
3059 | /* check the sense key */ | |
3060 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
3061 | /* no status or recovered error */ | |
33659ebb CH |
3062 | if (((sense_key == 0x0) || (sense_key == 0x1)) && |
3063 | (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC)) | |
1a614f50 | 3064 | error_value = 0; |
03bbfee5 | 3065 | |
0a9279cc | 3066 | if (check_for_unit_attention(h, cmd)) { |
33659ebb | 3067 | *retry_cmd = !(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC); |
0a9279cc MM |
3068 | return 0; |
3069 | } | |
3070 | ||
33659ebb CH |
3071 | /* Not SG_IO or similar? */ |
3072 | if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) { | |
1a614f50 | 3073 | if (error_value != 0) |
b2a4a43d | 3074 | dev_warn(&h->pdev->dev, "cmd %p has CHECK CONDITION" |
03bbfee5 | 3075 | " sense key = 0x%x\n", cmd, sense_key); |
1a614f50 | 3076 | return error_value; |
03bbfee5 MMOD |
3077 | } |
3078 | ||
3079 | /* SG_IO or similar, copy sense data back */ | |
3080 | if (cmd->rq->sense) { | |
3081 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) | |
3082 | cmd->rq->sense_len = cmd->err_info->SenseLen; | |
3083 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, | |
3084 | cmd->rq->sense_len); | |
3085 | } else | |
3086 | cmd->rq->sense_len = 0; | |
3087 | ||
1a614f50 | 3088 | return error_value; |
03bbfee5 MMOD |
3089 | } |
3090 | ||
7c832835 | 3091 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
3092 | * buffers for the completed job. Note that this function does not need |
3093 | * to hold the hba/queue lock. | |
7c832835 BH |
3094 | */ |
3095 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
3096 | int timeout) | |
1da177e4 | 3097 | { |
1da177e4 | 3098 | int retry_cmd = 0; |
198b7660 MMOD |
3099 | struct request *rq = cmd->rq; |
3100 | ||
3101 | rq->errors = 0; | |
7c832835 | 3102 | |
1da177e4 | 3103 | if (timeout) |
1a614f50 | 3104 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
1da177e4 | 3105 | |
d38ae168 MMOD |
3106 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
3107 | goto after_error_processing; | |
7c832835 | 3108 | |
d38ae168 | 3109 | switch (cmd->err_info->CommandStatus) { |
d38ae168 | 3110 | case CMD_TARGET_STATUS: |
0a9279cc | 3111 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
d38ae168 MMOD |
3112 | break; |
3113 | case CMD_DATA_UNDERRUN: | |
33659ebb | 3114 | if (cmd->rq->cmd_type == REQ_TYPE_FS) { |
b2a4a43d | 3115 | dev_warn(&h->pdev->dev, "cmd %p has" |
03bbfee5 MMOD |
3116 | " completed with data underrun " |
3117 | "reported\n", cmd); | |
c3a4d78c | 3118 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
03bbfee5 | 3119 | } |
d38ae168 MMOD |
3120 | break; |
3121 | case CMD_DATA_OVERRUN: | |
33659ebb | 3122 | if (cmd->rq->cmd_type == REQ_TYPE_FS) |
b2a4a43d | 3123 | dev_warn(&h->pdev->dev, "cciss: cmd %p has" |
03bbfee5 MMOD |
3124 | " completed with data overrun " |
3125 | "reported\n", cmd); | |
d38ae168 MMOD |
3126 | break; |
3127 | case CMD_INVALID: | |
b2a4a43d | 3128 | dev_warn(&h->pdev->dev, "cciss: cmd %p is " |
d38ae168 | 3129 | "reported invalid\n", cmd); |
1a614f50 SC |
3130 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3131 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3132 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3133 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3134 | break; |
3135 | case CMD_PROTOCOL_ERR: | |
b2a4a43d SC |
3136 | dev_warn(&h->pdev->dev, "cciss: cmd %p has " |
3137 | "protocol error\n", cmd); | |
1a614f50 SC |
3138 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3139 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3140 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3141 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3142 | break; |
3143 | case CMD_HARDWARE_ERR: | |
b2a4a43d | 3144 | dev_warn(&h->pdev->dev, "cciss: cmd %p had " |
d38ae168 | 3145 | " hardware error\n", cmd); |
1a614f50 SC |
3146 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3147 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3148 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3149 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3150 | break; |
3151 | case CMD_CONNECTION_LOST: | |
b2a4a43d | 3152 | dev_warn(&h->pdev->dev, "cciss: cmd %p had " |
d38ae168 | 3153 | "connection lost\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_ABORTED: | |
b2a4a43d | 3160 | dev_warn(&h->pdev->dev, "cciss: cmd %p was " |
d38ae168 | 3161 | "aborted\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_ABORT); | |
d38ae168 MMOD |
3166 | break; |
3167 | case CMD_ABORT_FAILED: | |
b2a4a43d | 3168 | dev_warn(&h->pdev->dev, "cciss: cmd %p reports " |
d38ae168 | 3169 | "abort failed\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_UNSOLICITED_ABORT: | |
b2a4a43d | 3176 | dev_warn(&h->pdev->dev, "cciss%d: unsolicited " |
d38ae168 MMOD |
3177 | "abort %p\n", h->ctlr, cmd); |
3178 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
3179 | retry_cmd = 1; | |
b2a4a43d | 3180 | dev_warn(&h->pdev->dev, "retrying %p\n", cmd); |
d38ae168 MMOD |
3181 | cmd->retry_count++; |
3182 | } else | |
b2a4a43d SC |
3183 | dev_warn(&h->pdev->dev, |
3184 | "%p retried too many times\n", cmd); | |
1a614f50 SC |
3185 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3186 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3187 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3188 | DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
3189 | break; |
3190 | case CMD_TIMEOUT: | |
b2a4a43d | 3191 | dev_warn(&h->pdev->dev, "cmd %p timedout\n", cmd); |
1a614f50 SC |
3192 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3193 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3194 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3195 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 | 3196 | break; |
6d9a4f9e SC |
3197 | case CMD_UNABORTABLE: |
3198 | dev_warn(&h->pdev->dev, "cmd %p unabortable\n", cmd); | |
3199 | rq->errors = make_status_bytes(SAM_STAT_GOOD, | |
3200 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3201 | cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC ? | |
3202 | DID_PASSTHROUGH : DID_ERROR); | |
3203 | break; | |
d38ae168 | 3204 | default: |
b2a4a43d | 3205 | dev_warn(&h->pdev->dev, "cmd %p returned " |
d38ae168 MMOD |
3206 | "unknown status %x\n", cmd, |
3207 | cmd->err_info->CommandStatus); | |
1a614f50 SC |
3208 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3209 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3210 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3211 | DID_PASSTHROUGH : DID_ERROR); | |
1da177e4 | 3212 | } |
d38ae168 MMOD |
3213 | |
3214 | after_error_processing: | |
3215 | ||
1da177e4 | 3216 | /* We need to return this command */ |
7c832835 BH |
3217 | if (retry_cmd) { |
3218 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 3219 | return; |
7c832835 | 3220 | } |
03bbfee5 | 3221 | cmd->rq->completion_data = cmd; |
a9925a06 | 3222 | blk_complete_request(cmd->rq); |
1da177e4 LT |
3223 | } |
3224 | ||
0c2b3908 MM |
3225 | static inline u32 cciss_tag_contains_index(u32 tag) |
3226 | { | |
5e216153 | 3227 | #define DIRECT_LOOKUP_BIT 0x10 |
0c2b3908 MM |
3228 | return tag & DIRECT_LOOKUP_BIT; |
3229 | } | |
3230 | ||
3231 | static inline u32 cciss_tag_to_index(u32 tag) | |
3232 | { | |
5e216153 | 3233 | #define DIRECT_LOOKUP_SHIFT 5 |
0c2b3908 MM |
3234 | return tag >> DIRECT_LOOKUP_SHIFT; |
3235 | } | |
3236 | ||
0498cc2a | 3237 | static inline u32 cciss_tag_discard_error_bits(ctlr_info_t *h, u32 tag) |
0c2b3908 | 3238 | { |
0498cc2a SC |
3239 | #define CCISS_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1) |
3240 | #define CCISS_SIMPLE_ERROR_BITS 0x03 | |
3241 | if (likely(h->transMethod & CFGTBL_Trans_Performant)) | |
3242 | return tag & ~CCISS_PERF_ERROR_BITS; | |
3243 | return tag & ~CCISS_SIMPLE_ERROR_BITS; | |
0c2b3908 MM |
3244 | } |
3245 | ||
3246 | static inline void cciss_mark_tag_indexed(u32 *tag) | |
3247 | { | |
3248 | *tag |= DIRECT_LOOKUP_BIT; | |
3249 | } | |
3250 | ||
3251 | static inline void cciss_set_tag_index(u32 *tag, u32 index) | |
3252 | { | |
3253 | *tag |= (index << DIRECT_LOOKUP_SHIFT); | |
3254 | } | |
3255 | ||
7c832835 BH |
3256 | /* |
3257 | * Get a request and submit it to the controller. | |
1da177e4 | 3258 | */ |
165125e1 | 3259 | static void do_cciss_request(struct request_queue *q) |
1da177e4 | 3260 | { |
7c832835 | 3261 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 3262 | CommandList_struct *c; |
00988a35 MMOD |
3263 | sector_t start_blk; |
3264 | int seg; | |
1da177e4 LT |
3265 | struct request *creq; |
3266 | u64bit temp64; | |
5c07a311 DB |
3267 | struct scatterlist *tmp_sg; |
3268 | SGDescriptor_struct *curr_sg; | |
1da177e4 LT |
3269 | drive_info_struct *drv; |
3270 | int i, dir; | |
5c07a311 DB |
3271 | int sg_index = 0; |
3272 | int chained = 0; | |
1da177e4 | 3273 | |
7c832835 | 3274 | queue: |
9934c8c0 | 3275 | creq = blk_peek_request(q); |
1da177e4 LT |
3276 | if (!creq) |
3277 | goto startio; | |
3278 | ||
5c07a311 | 3279 | BUG_ON(creq->nr_phys_segments > h->maxsgentries); |
1da177e4 | 3280 | |
6b4d96b8 SC |
3281 | c = cmd_alloc(h); |
3282 | if (!c) | |
1da177e4 LT |
3283 | goto full; |
3284 | ||
9934c8c0 | 3285 | blk_start_request(creq); |
1da177e4 | 3286 | |
5c07a311 | 3287 | tmp_sg = h->scatter_list[c->cmdindex]; |
1da177e4 LT |
3288 | spin_unlock_irq(q->queue_lock); |
3289 | ||
3290 | c->cmd_type = CMD_RWREQ; | |
3291 | c->rq = creq; | |
7c832835 BH |
3292 | |
3293 | /* fill in the request */ | |
1da177e4 | 3294 | drv = creq->rq_disk->private_data; |
b028461d | 3295 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
33079b21 MM |
3296 | /* got command from pool, so use the command block index instead */ |
3297 | /* for direct lookups. */ | |
3298 | /* The first 2 bits are reserved for controller error reporting. */ | |
0c2b3908 MM |
3299 | cciss_set_tag_index(&c->Header.Tag.lower, c->cmdindex); |
3300 | cciss_mark_tag_indexed(&c->Header.Tag.lower); | |
39ccf9a6 | 3301 | memcpy(&c->Header.LUN, drv->LunID, sizeof(drv->LunID)); |
b028461d | 3302 | c->Request.CDBLen = 10; /* 12 byte commands not in FW yet; */ |
3303 | c->Request.Type.Type = TYPE_CMD; /* It is a command. */ | |
7c832835 BH |
3304 | c->Request.Type.Attribute = ATTR_SIMPLE; |
3305 | c->Request.Type.Direction = | |
a52de245 | 3306 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
b028461d | 3307 | c->Request.Timeout = 0; /* Don't time out */ |
7c832835 | 3308 | c->Request.CDB[0] = |
00988a35 | 3309 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
83096ebf | 3310 | start_blk = blk_rq_pos(creq); |
b2a4a43d | 3311 | dev_dbg(&h->pdev->dev, "sector =%d nr_sectors=%d\n", |
83096ebf | 3312 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); |
5c07a311 | 3313 | sg_init_table(tmp_sg, h->maxsgentries); |
1da177e4 LT |
3314 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
3315 | ||
7c832835 | 3316 | /* get the DMA records for the setup */ |
1da177e4 LT |
3317 | if (c->Request.Type.Direction == XFER_READ) |
3318 | dir = PCI_DMA_FROMDEVICE; | |
3319 | else | |
3320 | dir = PCI_DMA_TODEVICE; | |
3321 | ||
5c07a311 DB |
3322 | curr_sg = c->SG; |
3323 | sg_index = 0; | |
3324 | chained = 0; | |
3325 | ||
7c832835 | 3326 | for (i = 0; i < seg; i++) { |
5c07a311 DB |
3327 | if (((sg_index+1) == (h->max_cmd_sgentries)) && |
3328 | !chained && ((seg - i) > 1)) { | |
5c07a311 | 3329 | /* Point to next chain block. */ |
dccc9b56 | 3330 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
5c07a311 DB |
3331 | sg_index = 0; |
3332 | chained = 1; | |
3333 | } | |
3334 | curr_sg[sg_index].Len = tmp_sg[i].length; | |
45711f1a | 3335 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
5c07a311 DB |
3336 | tmp_sg[i].offset, |
3337 | tmp_sg[i].length, dir); | |
3338 | curr_sg[sg_index].Addr.lower = temp64.val32.lower; | |
3339 | curr_sg[sg_index].Addr.upper = temp64.val32.upper; | |
3340 | curr_sg[sg_index].Ext = 0; /* we are not chaining */ | |
5c07a311 | 3341 | ++sg_index; |
1da177e4 | 3342 | } |
d45033ef SC |
3343 | if (chained) |
3344 | cciss_map_sg_chain_block(h, c, h->cmd_sg_list[c->cmdindex], | |
3345 | (seg - (h->max_cmd_sgentries - 1)) * | |
3346 | sizeof(SGDescriptor_struct)); | |
5c07a311 | 3347 | |
7c832835 BH |
3348 | /* track how many SG entries we are using */ |
3349 | if (seg > h->maxSG) | |
3350 | h->maxSG = seg; | |
1da177e4 | 3351 | |
b2a4a43d | 3352 | dev_dbg(&h->pdev->dev, "Submitting %u sectors in %d segments " |
5c07a311 DB |
3353 | "chained[%d]\n", |
3354 | blk_rq_sectors(creq), seg, chained); | |
1da177e4 | 3355 | |
5e216153 MM |
3356 | c->Header.SGTotal = seg + chained; |
3357 | if (seg <= h->max_cmd_sgentries) | |
3358 | c->Header.SGList = c->Header.SGTotal; | |
3359 | else | |
5c07a311 | 3360 | c->Header.SGList = h->max_cmd_sgentries; |
5e216153 | 3361 | set_performant_mode(h, c); |
5c07a311 | 3362 | |
33659ebb | 3363 | if (likely(creq->cmd_type == REQ_TYPE_FS)) { |
03bbfee5 MMOD |
3364 | if(h->cciss_read == CCISS_READ_10) { |
3365 | c->Request.CDB[1] = 0; | |
b028461d | 3366 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; /* MSB */ |
03bbfee5 MMOD |
3367 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; |
3368 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
3369 | c->Request.CDB[5] = start_blk & 0xff; | |
b028461d | 3370 | c->Request.CDB[6] = 0; /* (sect >> 24) & 0xff; MSB */ |
83096ebf TH |
3371 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
3372 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3373 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
3374 | } else { | |
582539e5 RD |
3375 | u32 upper32 = upper_32_bits(start_blk); |
3376 | ||
03bbfee5 MMOD |
3377 | c->Request.CDBLen = 16; |
3378 | c->Request.CDB[1]= 0; | |
b028461d | 3379 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; /* MSB */ |
582539e5 RD |
3380 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; |
3381 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; | |
3382 | c->Request.CDB[5]= upper32 & 0xff; | |
03bbfee5 MMOD |
3383 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
3384 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
3385 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
3386 | c->Request.CDB[9]= start_blk & 0xff; | |
83096ebf TH |
3387 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
3388 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; | |
3389 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; | |
3390 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3391 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
3392 | } | |
33659ebb | 3393 | } else if (creq->cmd_type == REQ_TYPE_BLOCK_PC) { |
03bbfee5 MMOD |
3394 | c->Request.CDBLen = creq->cmd_len; |
3395 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); | |
00988a35 | 3396 | } else { |
b2a4a43d SC |
3397 | dev_warn(&h->pdev->dev, "bad request type %d\n", |
3398 | creq->cmd_type); | |
03bbfee5 | 3399 | BUG(); |
00988a35 | 3400 | } |
1da177e4 LT |
3401 | |
3402 | spin_lock_irq(q->queue_lock); | |
3403 | ||
8a3173de | 3404 | addQ(&h->reqQ, c); |
1da177e4 | 3405 | h->Qdepth++; |
7c832835 BH |
3406 | if (h->Qdepth > h->maxQsinceinit) |
3407 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
3408 | |
3409 | goto queue; | |
00988a35 | 3410 | full: |
1da177e4 | 3411 | blk_stop_queue(q); |
00988a35 | 3412 | startio: |
1da177e4 LT |
3413 | /* We will already have the driver lock here so not need |
3414 | * to lock it. | |
7c832835 | 3415 | */ |
1da177e4 LT |
3416 | start_io(h); |
3417 | } | |
3418 | ||
3da8b713 | 3419 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
3420 | { | |
3da8b713 | 3421 | return h->access.command_completed(h); |
3da8b713 | 3422 | } |
3423 | ||
3424 | static inline int interrupt_pending(ctlr_info_t *h) | |
3425 | { | |
3da8b713 | 3426 | return h->access.intr_pending(h); |
3da8b713 | 3427 | } |
3428 | ||
3429 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
3430 | { | |
81125860 | 3431 | return ((h->access.intr_pending(h) == 0) || |
2cf3af1c | 3432 | (h->interrupts_enabled == 0)); |
3da8b713 | 3433 | } |
3434 | ||
0c2b3908 MM |
3435 | static inline int bad_tag(ctlr_info_t *h, u32 tag_index, |
3436 | u32 raw_tag) | |
1da177e4 | 3437 | { |
0c2b3908 MM |
3438 | if (unlikely(tag_index >= h->nr_cmds)) { |
3439 | dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); | |
3440 | return 1; | |
3441 | } | |
3442 | return 0; | |
3443 | } | |
3444 | ||
3445 | static inline void finish_cmd(ctlr_info_t *h, CommandList_struct *c, | |
3446 | u32 raw_tag) | |
3447 | { | |
3448 | removeQ(c); | |
3449 | if (likely(c->cmd_type == CMD_RWREQ)) | |
3450 | complete_command(h, c, 0); | |
3451 | else if (c->cmd_type == CMD_IOCTL_PEND) | |
3452 | complete(c->waiting); | |
3453 | #ifdef CONFIG_CISS_SCSI_TAPE | |
3454 | else if (c->cmd_type == CMD_SCSI) | |
3455 | complete_scsi_command(c, 0, raw_tag); | |
3456 | #endif | |
3457 | } | |
3458 | ||
29979a71 MM |
3459 | static inline u32 next_command(ctlr_info_t *h) |
3460 | { | |
3461 | u32 a; | |
3462 | ||
0498cc2a | 3463 | if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) |
29979a71 MM |
3464 | return h->access.command_completed(h); |
3465 | ||
3466 | if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { | |
3467 | a = *(h->reply_pool_head); /* Next cmd in ring buffer */ | |
3468 | (h->reply_pool_head)++; | |
3469 | h->commands_outstanding--; | |
3470 | } else { | |
3471 | a = FIFO_EMPTY; | |
3472 | } | |
3473 | /* Check for wraparound */ | |
3474 | if (h->reply_pool_head == (h->reply_pool + h->max_commands)) { | |
3475 | h->reply_pool_head = h->reply_pool; | |
3476 | h->reply_pool_wraparound ^= 1; | |
3477 | } | |
3478 | return a; | |
3479 | } | |
3480 | ||
0c2b3908 MM |
3481 | /* process completion of an indexed ("direct lookup") command */ |
3482 | static inline u32 process_indexed_cmd(ctlr_info_t *h, u32 raw_tag) | |
3483 | { | |
3484 | u32 tag_index; | |
1da177e4 | 3485 | CommandList_struct *c; |
0c2b3908 MM |
3486 | |
3487 | tag_index = cciss_tag_to_index(raw_tag); | |
3488 | if (bad_tag(h, tag_index, raw_tag)) | |
5e216153 | 3489 | return next_command(h); |
0c2b3908 MM |
3490 | c = h->cmd_pool + tag_index; |
3491 | finish_cmd(h, c, raw_tag); | |
5e216153 | 3492 | return next_command(h); |
0c2b3908 MM |
3493 | } |
3494 | ||
3495 | /* process completion of a non-indexed command */ | |
3496 | static inline u32 process_nonindexed_cmd(ctlr_info_t *h, u32 raw_tag) | |
3497 | { | |
0c2b3908 | 3498 | CommandList_struct *c = NULL; |
0c2b3908 MM |
3499 | __u32 busaddr_masked, tag_masked; |
3500 | ||
0498cc2a | 3501 | tag_masked = cciss_tag_discard_error_bits(h, raw_tag); |
e6e1ee93 | 3502 | list_for_each_entry(c, &h->cmpQ, list) { |
0498cc2a | 3503 | busaddr_masked = cciss_tag_discard_error_bits(h, c->busaddr); |
0c2b3908 MM |
3504 | if (busaddr_masked == tag_masked) { |
3505 | finish_cmd(h, c, raw_tag); | |
5e216153 | 3506 | return next_command(h); |
0c2b3908 MM |
3507 | } |
3508 | } | |
3509 | bad_tag(h, h->nr_cmds + 1, raw_tag); | |
5e216153 | 3510 | return next_command(h); |
0c2b3908 MM |
3511 | } |
3512 | ||
5afe2781 SC |
3513 | /* Some controllers, like p400, will give us one interrupt |
3514 | * after a soft reset, even if we turned interrupts off. | |
3515 | * Only need to check for this in the cciss_xxx_discard_completions | |
3516 | * functions. | |
3517 | */ | |
3518 | static int ignore_bogus_interrupt(ctlr_info_t *h) | |
3519 | { | |
3520 | if (likely(!reset_devices)) | |
3521 | return 0; | |
3522 | ||
3523 | if (likely(h->interrupts_enabled)) | |
3524 | return 0; | |
3525 | ||
3526 | dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled " | |
3527 | "(known firmware bug.) Ignoring.\n"); | |
3528 | ||
3529 | return 1; | |
3530 | } | |
3531 | ||
3532 | static irqreturn_t cciss_intx_discard_completions(int irq, void *dev_id) | |
3533 | { | |
3534 | ctlr_info_t *h = dev_id; | |
3535 | unsigned long flags; | |
3536 | u32 raw_tag; | |
3537 | ||
3538 | if (ignore_bogus_interrupt(h)) | |
3539 | return IRQ_NONE; | |
3540 | ||
3541 | if (interrupt_not_for_us(h)) | |
3542 | return IRQ_NONE; | |
3543 | spin_lock_irqsave(&h->lock, flags); | |
3544 | while (interrupt_pending(h)) { | |
3545 | raw_tag = get_next_completion(h); | |
3546 | while (raw_tag != FIFO_EMPTY) | |
3547 | raw_tag = next_command(h); | |
3548 | } | |
3549 | spin_unlock_irqrestore(&h->lock, flags); | |
3550 | return IRQ_HANDLED; | |
3551 | } | |
3552 | ||
3553 | static irqreturn_t cciss_msix_discard_completions(int irq, void *dev_id) | |
3554 | { | |
3555 | ctlr_info_t *h = dev_id; | |
3556 | unsigned long flags; | |
3557 | u32 raw_tag; | |
3558 | ||
3559 | if (ignore_bogus_interrupt(h)) | |
3560 | return IRQ_NONE; | |
3561 | ||
3562 | spin_lock_irqsave(&h->lock, flags); | |
3563 | raw_tag = get_next_completion(h); | |
3564 | while (raw_tag != FIFO_EMPTY) | |
3565 | raw_tag = next_command(h); | |
3566 | spin_unlock_irqrestore(&h->lock, flags); | |
3567 | return IRQ_HANDLED; | |
3568 | } | |
3569 | ||
0c2b3908 MM |
3570 | static irqreturn_t do_cciss_intx(int irq, void *dev_id) |
3571 | { | |
3572 | ctlr_info_t *h = dev_id; | |
1da177e4 | 3573 | unsigned long flags; |
0c2b3908 | 3574 | u32 raw_tag; |
1da177e4 | 3575 | |
3da8b713 | 3576 | if (interrupt_not_for_us(h)) |
1da177e4 | 3577 | return IRQ_NONE; |
f70dba83 | 3578 | spin_lock_irqsave(&h->lock, flags); |
3da8b713 | 3579 | while (interrupt_pending(h)) { |
0c2b3908 MM |
3580 | raw_tag = get_next_completion(h); |
3581 | while (raw_tag != FIFO_EMPTY) { | |
3582 | if (cciss_tag_contains_index(raw_tag)) | |
3583 | raw_tag = process_indexed_cmd(h, raw_tag); | |
3584 | else | |
3585 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
1da177e4 LT |
3586 | } |
3587 | } | |
f70dba83 | 3588 | spin_unlock_irqrestore(&h->lock, flags); |
0c2b3908 MM |
3589 | return IRQ_HANDLED; |
3590 | } | |
1da177e4 | 3591 | |
0c2b3908 MM |
3592 | /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never |
3593 | * check the interrupt pending register because it is not set. | |
3594 | */ | |
3595 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id) | |
3596 | { | |
3597 | ctlr_info_t *h = dev_id; | |
3598 | unsigned long flags; | |
3599 | u32 raw_tag; | |
8a3173de | 3600 | |
f70dba83 | 3601 | spin_lock_irqsave(&h->lock, flags); |
0c2b3908 MM |
3602 | raw_tag = get_next_completion(h); |
3603 | while (raw_tag != FIFO_EMPTY) { | |
3604 | if (cciss_tag_contains_index(raw_tag)) | |
3605 | raw_tag = process_indexed_cmd(h, raw_tag); | |
3606 | else | |
3607 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
1da177e4 | 3608 | } |
f70dba83 | 3609 | spin_unlock_irqrestore(&h->lock, flags); |
1da177e4 LT |
3610 | return IRQ_HANDLED; |
3611 | } | |
7c832835 | 3612 | |
b368c9dd AP |
3613 | /** |
3614 | * add_to_scan_list() - add controller to rescan queue | |
3615 | * @h: Pointer to the controller. | |
3616 | * | |
3617 | * Adds the controller to the rescan queue if not already on the queue. | |
3618 | * | |
3619 | * returns 1 if added to the queue, 0 if skipped (could be on the | |
3620 | * queue already, or the controller could be initializing or shutting | |
3621 | * down). | |
3622 | **/ | |
3623 | static int add_to_scan_list(struct ctlr_info *h) | |
3624 | { | |
3625 | struct ctlr_info *test_h; | |
3626 | int found = 0; | |
3627 | int ret = 0; | |
3628 | ||
3629 | if (h->busy_initializing) | |
3630 | return 0; | |
3631 | ||
3632 | if (!mutex_trylock(&h->busy_shutting_down)) | |
3633 | return 0; | |
3634 | ||
3635 | mutex_lock(&scan_mutex); | |
3636 | list_for_each_entry(test_h, &scan_q, scan_list) { | |
3637 | if (test_h == h) { | |
3638 | found = 1; | |
3639 | break; | |
3640 | } | |
3641 | } | |
3642 | if (!found && !h->busy_scanning) { | |
3643 | INIT_COMPLETION(h->scan_wait); | |
3644 | list_add_tail(&h->scan_list, &scan_q); | |
3645 | ret = 1; | |
3646 | } | |
3647 | mutex_unlock(&scan_mutex); | |
3648 | mutex_unlock(&h->busy_shutting_down); | |
3649 | ||
3650 | return ret; | |
3651 | } | |
3652 | ||
3653 | /** | |
3654 | * remove_from_scan_list() - remove controller from rescan queue | |
3655 | * @h: Pointer to the controller. | |
3656 | * | |
3657 | * Removes the controller from the rescan queue if present. Blocks if | |
fd8489cf SC |
3658 | * the controller is currently conducting a rescan. The controller |
3659 | * can be in one of three states: | |
3660 | * 1. Doesn't need a scan | |
3661 | * 2. On the scan list, but not scanning yet (we remove it) | |
3662 | * 3. Busy scanning (and not on the list). In this case we want to wait for | |
3663 | * the scan to complete to make sure the scanning thread for this | |
3664 | * controller is completely idle. | |
b368c9dd AP |
3665 | **/ |
3666 | static void remove_from_scan_list(struct ctlr_info *h) | |
3667 | { | |
3668 | struct ctlr_info *test_h, *tmp_h; | |
b368c9dd AP |
3669 | |
3670 | mutex_lock(&scan_mutex); | |
3671 | list_for_each_entry_safe(test_h, tmp_h, &scan_q, scan_list) { | |
fd8489cf | 3672 | if (test_h == h) { /* state 2. */ |
b368c9dd AP |
3673 | list_del(&h->scan_list); |
3674 | complete_all(&h->scan_wait); | |
3675 | mutex_unlock(&scan_mutex); | |
3676 | return; | |
3677 | } | |
3678 | } | |
fd8489cf SC |
3679 | if (h->busy_scanning) { /* state 3. */ |
3680 | mutex_unlock(&scan_mutex); | |
b368c9dd | 3681 | wait_for_completion(&h->scan_wait); |
fd8489cf SC |
3682 | } else { /* state 1, nothing to do. */ |
3683 | mutex_unlock(&scan_mutex); | |
3684 | } | |
b368c9dd AP |
3685 | } |
3686 | ||
3687 | /** | |
3688 | * scan_thread() - kernel thread used to rescan controllers | |
3689 | * @data: Ignored. | |
3690 | * | |
3691 | * A kernel thread used scan for drive topology changes on | |
3692 | * controllers. The thread processes only one controller at a time | |
3693 | * using a queue. Controllers are added to the queue using | |
3694 | * add_to_scan_list() and removed from the queue either after done | |
3695 | * processing or using remove_from_scan_list(). | |
3696 | * | |
3697 | * returns 0. | |
3698 | **/ | |
0a9279cc MM |
3699 | static int scan_thread(void *data) |
3700 | { | |
b368c9dd | 3701 | struct ctlr_info *h; |
0a9279cc | 3702 | |
b368c9dd AP |
3703 | while (1) { |
3704 | set_current_state(TASK_INTERRUPTIBLE); | |
3705 | schedule(); | |
0a9279cc MM |
3706 | if (kthread_should_stop()) |
3707 | break; | |
b368c9dd AP |
3708 | |
3709 | while (1) { | |
3710 | mutex_lock(&scan_mutex); | |
3711 | if (list_empty(&scan_q)) { | |
3712 | mutex_unlock(&scan_mutex); | |
3713 | break; | |
3714 | } | |
3715 | ||
3716 | h = list_entry(scan_q.next, | |
3717 | struct ctlr_info, | |
3718 | scan_list); | |
3719 | list_del(&h->scan_list); | |
3720 | h->busy_scanning = 1; | |
3721 | mutex_unlock(&scan_mutex); | |
3722 | ||
d06dfbd2 SC |
3723 | rebuild_lun_table(h, 0, 0); |
3724 | complete_all(&h->scan_wait); | |
3725 | mutex_lock(&scan_mutex); | |
3726 | h->busy_scanning = 0; | |
3727 | mutex_unlock(&scan_mutex); | |
b368c9dd | 3728 | } |
0a9279cc | 3729 | } |
b368c9dd | 3730 | |
0a9279cc MM |
3731 | return 0; |
3732 | } | |
3733 | ||
3734 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) | |
3735 | { | |
3736 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) | |
3737 | return 0; | |
3738 | ||
3739 | switch (c->err_info->SenseInfo[12]) { | |
3740 | case STATE_CHANGED: | |
b2a4a43d SC |
3741 | dev_warn(&h->pdev->dev, "a state change " |
3742 | "detected, command retried\n"); | |
0a9279cc MM |
3743 | return 1; |
3744 | break; | |
3745 | case LUN_FAILED: | |
b2a4a43d SC |
3746 | dev_warn(&h->pdev->dev, "LUN failure " |
3747 | "detected, action required\n"); | |
0a9279cc MM |
3748 | return 1; |
3749 | break; | |
3750 | case REPORT_LUNS_CHANGED: | |
b2a4a43d | 3751 | dev_warn(&h->pdev->dev, "report LUN data changed\n"); |
da002184 SC |
3752 | /* |
3753 | * Here, we could call add_to_scan_list and wake up the scan thread, | |
3754 | * except that it's quite likely that we will get more than one | |
3755 | * REPORT_LUNS_CHANGED condition in quick succession, which means | |
3756 | * that those which occur after the first one will likely happen | |
3757 | * *during* the scan_thread's rescan. And the rescan code is not | |
3758 | * robust enough to restart in the middle, undoing what it has already | |
3759 | * done, and it's not clear that it's even possible to do this, since | |
3760 | * part of what it does is notify the block layer, which starts | |
3761 | * doing it's own i/o to read partition tables and so on, and the | |
3762 | * driver doesn't have visibility to know what might need undoing. | |
3763 | * In any event, if possible, it is horribly complicated to get right | |
3764 | * so we just don't do it for now. | |
3765 | * | |
3766 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. | |
3767 | */ | |
0a9279cc MM |
3768 | return 1; |
3769 | break; | |
3770 | case POWER_OR_RESET: | |
b2a4a43d SC |
3771 | dev_warn(&h->pdev->dev, |
3772 | "a power on or device reset detected\n"); | |
0a9279cc MM |
3773 | return 1; |
3774 | break; | |
3775 | case UNIT_ATTENTION_CLEARED: | |
b2a4a43d SC |
3776 | dev_warn(&h->pdev->dev, |
3777 | "unit attention cleared by another initiator\n"); | |
0a9279cc MM |
3778 | return 1; |
3779 | break; | |
3780 | default: | |
b2a4a43d SC |
3781 | dev_warn(&h->pdev->dev, "unknown unit attention detected\n"); |
3782 | return 1; | |
0a9279cc MM |
3783 | } |
3784 | } | |
3785 | ||
7c832835 | 3786 | /* |
d14c4ab5 | 3787 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 3788 | * the io functions. |
7c832835 | 3789 | * This is for debug only. |
1da177e4 | 3790 | */ |
b2a4a43d | 3791 | static void print_cfg_table(ctlr_info_t *h) |
1da177e4 LT |
3792 | { |
3793 | int i; | |
3794 | char temp_name[17]; | |
b2a4a43d | 3795 | CfgTable_struct *tb = h->cfgtable; |
1da177e4 | 3796 | |
b2a4a43d SC |
3797 | dev_dbg(&h->pdev->dev, "Controller Configuration information\n"); |
3798 | dev_dbg(&h->pdev->dev, "------------------------------------\n"); | |
7c832835 | 3799 | for (i = 0; i < 4; i++) |
1da177e4 | 3800 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 | 3801 | temp_name[4] = '\0'; |
b2a4a43d SC |
3802 | dev_dbg(&h->pdev->dev, " Signature = %s\n", temp_name); |
3803 | dev_dbg(&h->pdev->dev, " Spec Number = %d\n", | |
3804 | readl(&(tb->SpecValence))); | |
3805 | dev_dbg(&h->pdev->dev, " Transport methods supported = 0x%x\n", | |
7c832835 | 3806 | readl(&(tb->TransportSupport))); |
b2a4a43d | 3807 | dev_dbg(&h->pdev->dev, " Transport methods active = 0x%x\n", |
7c832835 | 3808 | readl(&(tb->TransportActive))); |
b2a4a43d | 3809 | dev_dbg(&h->pdev->dev, " Requested transport Method = 0x%x\n", |
7c832835 | 3810 | readl(&(tb->HostWrite.TransportRequest))); |
b2a4a43d | 3811 | dev_dbg(&h->pdev->dev, " Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 3812 | readl(&(tb->HostWrite.CoalIntDelay))); |
b2a4a43d | 3813 | dev_dbg(&h->pdev->dev, " Coalesce Interrupt Count = 0x%x\n", |
7c832835 | 3814 | readl(&(tb->HostWrite.CoalIntCount))); |
b2a4a43d | 3815 | dev_dbg(&h->pdev->dev, " Max outstanding commands = 0x%d\n", |
7c832835 | 3816 | readl(&(tb->CmdsOutMax))); |
b2a4a43d SC |
3817 | dev_dbg(&h->pdev->dev, " Bus Types = 0x%x\n", |
3818 | readl(&(tb->BusTypes))); | |
7c832835 | 3819 | for (i = 0; i < 16; i++) |
1da177e4 LT |
3820 | temp_name[i] = readb(&(tb->ServerName[i])); |
3821 | temp_name[16] = '\0'; | |
b2a4a43d SC |
3822 | dev_dbg(&h->pdev->dev, " Server Name = %s\n", temp_name); |
3823 | dev_dbg(&h->pdev->dev, " Heartbeat Counter = 0x%x\n\n\n", | |
3824 | readl(&(tb->HeartBeat))); | |
1da177e4 | 3825 | } |
1da177e4 | 3826 | |
7c832835 | 3827 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
3828 | { |
3829 | int i, offset, mem_type, bar_type; | |
7c832835 | 3830 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
3831 | return 0; |
3832 | offset = 0; | |
7c832835 BH |
3833 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
3834 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
3835 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
3836 | offset += 4; | |
3837 | else { | |
3838 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 3839 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 3840 | switch (mem_type) { |
7c832835 BH |
3841 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
3842 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
3843 | offset += 4; /* 32 bit */ | |
3844 | break; | |
3845 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
3846 | offset += 8; | |
3847 | break; | |
3848 | default: /* reserved in PCI 2.2 */ | |
b2a4a43d | 3849 | dev_warn(&pdev->dev, |
7c832835 BH |
3850 | "Base address is invalid\n"); |
3851 | return -1; | |
1da177e4 LT |
3852 | break; |
3853 | } | |
3854 | } | |
7c832835 BH |
3855 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
3856 | return i + 1; | |
1da177e4 LT |
3857 | } |
3858 | return -1; | |
3859 | } | |
3860 | ||
5e216153 MM |
3861 | /* Fill in bucket_map[], given nsgs (the max number of |
3862 | * scatter gather elements supported) and bucket[], | |
3863 | * which is an array of 8 integers. The bucket[] array | |
3864 | * contains 8 different DMA transfer sizes (in 16 | |
3865 | * byte increments) which the controller uses to fetch | |
3866 | * commands. This function fills in bucket_map[], which | |
3867 | * maps a given number of scatter gather elements to one of | |
3868 | * the 8 DMA transfer sizes. The point of it is to allow the | |
3869 | * controller to only do as much DMA as needed to fetch the | |
3870 | * command, with the DMA transfer size encoded in the lower | |
3871 | * bits of the command address. | |
3872 | */ | |
3873 | static void calc_bucket_map(int bucket[], int num_buckets, | |
3874 | int nsgs, int *bucket_map) | |
3875 | { | |
3876 | int i, j, b, size; | |
3877 | ||
3878 | /* even a command with 0 SGs requires 4 blocks */ | |
3879 | #define MINIMUM_TRANSFER_BLOCKS 4 | |
3880 | #define NUM_BUCKETS 8 | |
3881 | /* Note, bucket_map must have nsgs+1 entries. */ | |
3882 | for (i = 0; i <= nsgs; i++) { | |
3883 | /* Compute size of a command with i SG entries */ | |
3884 | size = i + MINIMUM_TRANSFER_BLOCKS; | |
3885 | b = num_buckets; /* Assume the biggest bucket */ | |
3886 | /* Find the bucket that is just big enough */ | |
3887 | for (j = 0; j < 8; j++) { | |
3888 | if (bucket[j] >= size) { | |
3889 | b = j; | |
3890 | break; | |
3891 | } | |
3892 | } | |
3893 | /* for a command with i SG entries, use bucket b. */ | |
3894 | bucket_map[i] = b; | |
3895 | } | |
3896 | } | |
3897 | ||
0f8a6a1e SC |
3898 | static void __devinit cciss_wait_for_mode_change_ack(ctlr_info_t *h) |
3899 | { | |
3900 | int i; | |
3901 | ||
3902 | /* under certain very rare conditions, this can take awhile. | |
3903 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3904 | * as we enter this code.) */ | |
3905 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { | |
3906 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) | |
3907 | break; | |
332c2f80 | 3908 | usleep_range(10000, 20000); |
0f8a6a1e SC |
3909 | } |
3910 | } | |
3911 | ||
0498cc2a SC |
3912 | static __devinit void cciss_enter_performant_mode(ctlr_info_t *h, |
3913 | u32 use_short_tags) | |
b9933135 SC |
3914 | { |
3915 | /* This is a bit complicated. There are 8 registers on | |
3916 | * the controller which we write to to tell it 8 different | |
3917 | * sizes of commands which there may be. It's a way of | |
3918 | * reducing the DMA done to fetch each command. Encoded into | |
3919 | * each command's tag are 3 bits which communicate to the controller | |
3920 | * which of the eight sizes that command fits within. The size of | |
3921 | * each command depends on how many scatter gather entries there are. | |
3922 | * Each SG entry requires 16 bytes. The eight registers are programmed | |
3923 | * with the number of 16-byte blocks a command of that size requires. | |
3924 | * The smallest command possible requires 5 such 16 byte blocks. | |
3925 | * the largest command possible requires MAXSGENTRIES + 4 16-byte | |
3926 | * blocks. Note, this only extends to the SG entries contained | |
3927 | * within the command block, and does not extend to chained blocks | |
3928 | * of SG elements. bft[] contains the eight values we write to | |
3929 | * the registers. They are not evenly distributed, but have more | |
3930 | * sizes for small commands, and fewer sizes for larger commands. | |
3931 | */ | |
5e216153 | 3932 | __u32 trans_offset; |
b9933135 | 3933 | int bft[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4}; |
5e216153 MM |
3934 | /* |
3935 | * 5 = 1 s/g entry or 4k | |
3936 | * 6 = 2 s/g entry or 8k | |
3937 | * 8 = 4 s/g entry or 16k | |
3938 | * 10 = 6 s/g entry or 24k | |
3939 | */ | |
5e216153 | 3940 | unsigned long register_value; |
5e216153 MM |
3941 | BUILD_BUG_ON(28 > MAXSGENTRIES + 4); |
3942 | ||
5e216153 MM |
3943 | h->reply_pool_wraparound = 1; /* spec: init to 1 */ |
3944 | ||
3945 | /* Controller spec: zero out this buffer. */ | |
3946 | memset(h->reply_pool, 0, h->max_commands * sizeof(__u64)); | |
3947 | h->reply_pool_head = h->reply_pool; | |
3948 | ||
3949 | trans_offset = readl(&(h->cfgtable->TransMethodOffset)); | |
3950 | calc_bucket_map(bft, ARRAY_SIZE(bft), h->maxsgentries, | |
3951 | h->blockFetchTable); | |
3952 | writel(bft[0], &h->transtable->BlockFetch0); | |
3953 | writel(bft[1], &h->transtable->BlockFetch1); | |
3954 | writel(bft[2], &h->transtable->BlockFetch2); | |
3955 | writel(bft[3], &h->transtable->BlockFetch3); | |
3956 | writel(bft[4], &h->transtable->BlockFetch4); | |
3957 | writel(bft[5], &h->transtable->BlockFetch5); | |
3958 | writel(bft[6], &h->transtable->BlockFetch6); | |
3959 | writel(bft[7], &h->transtable->BlockFetch7); | |
3960 | ||
3961 | /* size of controller ring buffer */ | |
3962 | writel(h->max_commands, &h->transtable->RepQSize); | |
3963 | writel(1, &h->transtable->RepQCount); | |
3964 | writel(0, &h->transtable->RepQCtrAddrLow32); | |
3965 | writel(0, &h->transtable->RepQCtrAddrHigh32); | |
3966 | writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32); | |
3967 | writel(0, &h->transtable->RepQAddr0High32); | |
0498cc2a | 3968 | writel(CFGTBL_Trans_Performant | use_short_tags, |
5e216153 MM |
3969 | &(h->cfgtable->HostWrite.TransportRequest)); |
3970 | ||
5e216153 | 3971 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
0f8a6a1e | 3972 | cciss_wait_for_mode_change_ack(h); |
5e216153 | 3973 | register_value = readl(&(h->cfgtable->TransportActive)); |
b9933135 | 3974 | if (!(register_value & CFGTBL_Trans_Performant)) |
b2a4a43d | 3975 | dev_warn(&h->pdev->dev, "cciss: unable to get board into" |
5e216153 | 3976 | " performant mode\n"); |
b9933135 SC |
3977 | } |
3978 | ||
3979 | static void __devinit cciss_put_controller_into_performant_mode(ctlr_info_t *h) | |
3980 | { | |
3981 | __u32 trans_support; | |
3982 | ||
3983 | dev_dbg(&h->pdev->dev, "Trying to put board into Performant mode\n"); | |
3984 | /* Attempt to put controller into performant mode if supported */ | |
3985 | /* Does board support performant mode? */ | |
3986 | trans_support = readl(&(h->cfgtable->TransportSupport)); | |
3987 | if (!(trans_support & PERFORMANT_MODE)) | |
3988 | return; | |
3989 | ||
b2a4a43d | 3990 | dev_dbg(&h->pdev->dev, "Placing controller into performant mode\n"); |
b9933135 SC |
3991 | /* Performant mode demands commands on a 32 byte boundary |
3992 | * pci_alloc_consistent aligns on page boundarys already. | |
3993 | * Just need to check if divisible by 32 | |
3994 | */ | |
3995 | if ((sizeof(CommandList_struct) % 32) != 0) { | |
b2a4a43d | 3996 | dev_warn(&h->pdev->dev, "%s %d %s\n", |
b9933135 SC |
3997 | "cciss info: command size[", |
3998 | (int)sizeof(CommandList_struct), | |
3999 | "] not divisible by 32, no performant mode..\n"); | |
5e216153 MM |
4000 | return; |
4001 | } | |
4002 | ||
b9933135 SC |
4003 | /* Performant mode ring buffer and supporting data structures */ |
4004 | h->reply_pool = (__u64 *)pci_alloc_consistent( | |
4005 | h->pdev, h->max_commands * sizeof(__u64), | |
4006 | &(h->reply_pool_dhandle)); | |
4007 | ||
4008 | /* Need a block fetch table for performant mode */ | |
4009 | h->blockFetchTable = kmalloc(((h->maxsgentries+1) * | |
4010 | sizeof(__u32)), GFP_KERNEL); | |
4011 | ||
4012 | if ((h->reply_pool == NULL) || (h->blockFetchTable == NULL)) | |
4013 | goto clean_up; | |
4014 | ||
0498cc2a SC |
4015 | cciss_enter_performant_mode(h, |
4016 | trans_support & CFGTBL_Trans_use_short_tags); | |
b9933135 | 4017 | |
5e216153 MM |
4018 | /* Change the access methods to the performant access methods */ |
4019 | h->access = SA5_performant_access; | |
b9933135 | 4020 | h->transMethod = CFGTBL_Trans_Performant; |
5e216153 MM |
4021 | |
4022 | return; | |
4023 | clean_up: | |
4024 | kfree(h->blockFetchTable); | |
4025 | if (h->reply_pool) | |
4026 | pci_free_consistent(h->pdev, | |
4027 | h->max_commands * sizeof(__u64), | |
4028 | h->reply_pool, | |
4029 | h->reply_pool_dhandle); | |
4030 | return; | |
4031 | ||
4032 | } /* cciss_put_controller_into_performant_mode */ | |
4033 | ||
fb86a35b MM |
4034 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
4035 | * controllers that are capable. If not, we use IO-APIC mode. | |
4036 | */ | |
4037 | ||
f70dba83 | 4038 | static void __devinit cciss_interrupt_mode(ctlr_info_t *h) |
fb86a35b MM |
4039 | { |
4040 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
4041 | int err; |
4042 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
4043 | {0, 2}, {0, 3} | |
4044 | }; | |
fb86a35b MM |
4045 | |
4046 | /* Some boards advertise MSI but don't really support it */ | |
f70dba83 SC |
4047 | if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) || |
4048 | (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11)) | |
fb86a35b MM |
4049 | goto default_int_mode; |
4050 | ||
f70dba83 SC |
4051 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) { |
4052 | err = pci_enable_msix(h->pdev, cciss_msix_entries, 4); | |
7c832835 | 4053 | if (!err) { |
f70dba83 SC |
4054 | h->intr[0] = cciss_msix_entries[0].vector; |
4055 | h->intr[1] = cciss_msix_entries[1].vector; | |
4056 | h->intr[2] = cciss_msix_entries[2].vector; | |
4057 | h->intr[3] = cciss_msix_entries[3].vector; | |
4058 | h->msix_vector = 1; | |
7c832835 BH |
4059 | return; |
4060 | } | |
4061 | if (err > 0) { | |
b2a4a43d SC |
4062 | dev_warn(&h->pdev->dev, |
4063 | "only %d MSI-X vectors available\n", err); | |
1ecb9c0f | 4064 | goto default_int_mode; |
7c832835 | 4065 | } else { |
b2a4a43d SC |
4066 | dev_warn(&h->pdev->dev, |
4067 | "MSI-X init failed %d\n", err); | |
1ecb9c0f | 4068 | goto default_int_mode; |
7c832835 BH |
4069 | } |
4070 | } | |
f70dba83 SC |
4071 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) { |
4072 | if (!pci_enable_msi(h->pdev)) | |
4073 | h->msi_vector = 1; | |
4074 | else | |
b2a4a43d | 4075 | dev_warn(&h->pdev->dev, "MSI init failed\n"); |
7c832835 | 4076 | } |
1ecb9c0f | 4077 | default_int_mode: |
7c832835 | 4078 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 4079 | /* if we get here we're going to use the default interrupt mode */ |
f70dba83 | 4080 | h->intr[PERF_MODE_INT] = h->pdev->irq; |
fb86a35b MM |
4081 | return; |
4082 | } | |
4083 | ||
6539fa9b | 4084 | static int __devinit cciss_lookup_board_id(struct pci_dev *pdev, u32 *board_id) |
1da177e4 | 4085 | { |
6539fa9b SC |
4086 | int i; |
4087 | u32 subsystem_vendor_id, subsystem_device_id; | |
2ec24ff1 SC |
4088 | |
4089 | subsystem_vendor_id = pdev->subsystem_vendor; | |
4090 | subsystem_device_id = pdev->subsystem_device; | |
6539fa9b SC |
4091 | *board_id = ((subsystem_device_id << 16) & 0xffff0000) | |
4092 | subsystem_vendor_id; | |
2ec24ff1 | 4093 | |
4205df34 | 4094 | for (i = 0; i < ARRAY_SIZE(products); i++) |
6539fa9b SC |
4095 | if (*board_id == products[i].board_id) |
4096 | return i; | |
6539fa9b SC |
4097 | dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x, ignoring.\n", |
4098 | *board_id); | |
4099 | return -ENODEV; | |
4100 | } | |
1da177e4 | 4101 | |
dd9c426e SC |
4102 | static inline bool cciss_board_disabled(ctlr_info_t *h) |
4103 | { | |
4104 | u16 command; | |
1da177e4 | 4105 | |
dd9c426e SC |
4106 | (void) pci_read_config_word(h->pdev, PCI_COMMAND, &command); |
4107 | return ((command & PCI_COMMAND_MEMORY) == 0); | |
4108 | } | |
1da177e4 | 4109 | |
d474830d SC |
4110 | static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev, |
4111 | unsigned long *memory_bar) | |
4112 | { | |
4113 | int i; | |
4e570309 | 4114 | |
d474830d SC |
4115 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) |
4116 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { | |
4117 | /* addressing mode bits already removed */ | |
4118 | *memory_bar = pci_resource_start(pdev, i); | |
4119 | dev_dbg(&pdev->dev, "memory BAR = %lx\n", | |
4120 | *memory_bar); | |
4121 | return 0; | |
4122 | } | |
4123 | dev_warn(&pdev->dev, "no memory BAR found\n"); | |
4124 | return -ENODEV; | |
4125 | } | |
1da177e4 | 4126 | |
afa842fa SC |
4127 | static int __devinit cciss_wait_for_board_state(struct pci_dev *pdev, |
4128 | void __iomem *vaddr, int wait_for_ready) | |
4129 | #define BOARD_READY 1 | |
4130 | #define BOARD_NOT_READY 0 | |
e99ba136 | 4131 | { |
afa842fa | 4132 | int i, iterations; |
e99ba136 | 4133 | u32 scratchpad; |
1da177e4 | 4134 | |
afa842fa SC |
4135 | if (wait_for_ready) |
4136 | iterations = CCISS_BOARD_READY_ITERATIONS; | |
4137 | else | |
4138 | iterations = CCISS_BOARD_NOT_READY_ITERATIONS; | |
4139 | ||
4140 | for (i = 0; i < iterations; i++) { | |
4141 | scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET); | |
4142 | if (wait_for_ready) { | |
4143 | if (scratchpad == CCISS_FIRMWARE_READY) | |
4144 | return 0; | |
4145 | } else { | |
4146 | if (scratchpad != CCISS_FIRMWARE_READY) | |
4147 | return 0; | |
4148 | } | |
e99ba136 | 4149 | msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS); |
e1438581 | 4150 | } |
afa842fa | 4151 | dev_warn(&pdev->dev, "board not ready, timed out.\n"); |
e99ba136 SC |
4152 | return -ENODEV; |
4153 | } | |
e1438581 | 4154 | |
8e93bf6d SC |
4155 | static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev, |
4156 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, | |
4157 | u64 *cfg_offset) | |
4158 | { | |
4159 | *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); | |
4160 | *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); | |
4161 | *cfg_base_addr &= (u32) 0x0000ffff; | |
4162 | *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); | |
4163 | if (*cfg_base_addr_index == -1) { | |
4164 | dev_warn(&pdev->dev, "cannot find cfg_base_addr_index, " | |
4165 | "*cfg_base_addr = 0x%08x\n", *cfg_base_addr); | |
4166 | return -ENODEV; | |
4167 | } | |
4168 | return 0; | |
4169 | } | |
1da177e4 | 4170 | |
4809d098 SC |
4171 | static int __devinit cciss_find_cfgtables(ctlr_info_t *h) |
4172 | { | |
4173 | u64 cfg_offset; | |
4174 | u32 cfg_base_addr; | |
4175 | u64 cfg_base_addr_index; | |
4176 | u32 trans_offset; | |
8e93bf6d | 4177 | int rc; |
1da177e4 | 4178 | |
8e93bf6d SC |
4179 | rc = cciss_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, |
4180 | &cfg_base_addr_index, &cfg_offset); | |
4181 | if (rc) | |
4182 | return rc; | |
4809d098 | 4183 | h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, |
8e93bf6d | 4184 | cfg_base_addr_index) + cfg_offset, sizeof(h->cfgtable)); |
4809d098 SC |
4185 | if (!h->cfgtable) |
4186 | return -ENOMEM; | |
62710ae1 SC |
4187 | rc = write_driver_ver_to_cfgtable(h->cfgtable); |
4188 | if (rc) | |
4189 | return rc; | |
4809d098 | 4190 | /* Find performant mode table. */ |
8e93bf6d | 4191 | trans_offset = readl(&h->cfgtable->TransMethodOffset); |
4809d098 SC |
4192 | h->transtable = remap_pci_mem(pci_resource_start(h->pdev, |
4193 | cfg_base_addr_index)+cfg_offset+trans_offset, | |
4194 | sizeof(*h->transtable)); | |
4195 | if (!h->transtable) | |
4196 | return -ENOMEM; | |
4197 | return 0; | |
4198 | } | |
1da177e4 | 4199 | |
adfbc1ff SC |
4200 | static void __devinit cciss_get_max_perf_mode_cmds(struct ctlr_info *h) |
4201 | { | |
4202 | h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); | |
186fb9cf SC |
4203 | |
4204 | /* Limit commands in memory limited kdump scenario. */ | |
4205 | if (reset_devices && h->max_commands > 32) | |
4206 | h->max_commands = 32; | |
4207 | ||
adfbc1ff SC |
4208 | if (h->max_commands < 16) { |
4209 | dev_warn(&h->pdev->dev, "Controller reports " | |
4210 | "max supported commands of %d, an obvious lie. " | |
4211 | "Using 16. Ensure that firmware is up to date.\n", | |
4212 | h->max_commands); | |
4213 | h->max_commands = 16; | |
1da177e4 | 4214 | } |
adfbc1ff | 4215 | } |
1da177e4 | 4216 | |
afadbf4b SC |
4217 | /* Interrogate the hardware for some limits: |
4218 | * max commands, max SG elements without chaining, and with chaining, | |
4219 | * SG chain block size, etc. | |
4220 | */ | |
4221 | static void __devinit cciss_find_board_params(ctlr_info_t *h) | |
4222 | { | |
adfbc1ff | 4223 | cciss_get_max_perf_mode_cmds(h); |
afadbf4b SC |
4224 | h->nr_cmds = h->max_commands - 4; /* Allow room for some ioctls */ |
4225 | h->maxsgentries = readl(&(h->cfgtable->MaxSGElements)); | |
5c07a311 | 4226 | /* |
afadbf4b | 4227 | * Limit in-command s/g elements to 32 save dma'able memory. |
5c07a311 DB |
4228 | * Howvever spec says if 0, use 31 |
4229 | */ | |
afadbf4b SC |
4230 | h->max_cmd_sgentries = 31; |
4231 | if (h->maxsgentries > 512) { | |
4232 | h->max_cmd_sgentries = 32; | |
4233 | h->chainsize = h->maxsgentries - h->max_cmd_sgentries + 1; | |
4234 | h->maxsgentries--; /* save one for chain pointer */ | |
5c07a311 | 4235 | } else { |
afadbf4b SC |
4236 | h->maxsgentries = 31; /* default to traditional values */ |
4237 | h->chainsize = 0; | |
5c07a311 | 4238 | } |
afadbf4b | 4239 | } |
5c07a311 | 4240 | |
501b92cd SC |
4241 | static inline bool CISS_signature_present(ctlr_info_t *h) |
4242 | { | |
4243 | if ((readb(&h->cfgtable->Signature[0]) != 'C') || | |
4244 | (readb(&h->cfgtable->Signature[1]) != 'I') || | |
4245 | (readb(&h->cfgtable->Signature[2]) != 'S') || | |
4246 | (readb(&h->cfgtable->Signature[3]) != 'S')) { | |
4247 | dev_warn(&h->pdev->dev, "not a valid CISS config table\n"); | |
4248 | return false; | |
1da177e4 | 4249 | } |
501b92cd SC |
4250 | return true; |
4251 | } | |
4252 | ||
322e304c SC |
4253 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
4254 | static inline void cciss_enable_scsi_prefetch(ctlr_info_t *h) | |
4255 | { | |
1da177e4 | 4256 | #ifdef CONFIG_X86 |
322e304c SC |
4257 | u32 prefetch; |
4258 | ||
4259 | prefetch = readl(&(h->cfgtable->SCSI_Prefetch)); | |
4260 | prefetch |= 0x100; | |
4261 | writel(prefetch, &(h->cfgtable->SCSI_Prefetch)); | |
1da177e4 | 4262 | #endif |
322e304c | 4263 | } |
1da177e4 | 4264 | |
bfd63ee5 SC |
4265 | /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result |
4266 | * in a prefetch beyond physical memory. | |
4267 | */ | |
4268 | static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t *h) | |
4269 | { | |
4270 | u32 dma_prefetch; | |
4271 | __u32 dma_refetch; | |
4272 | ||
4273 | if (h->board_id != 0x3225103C) | |
4274 | return; | |
4275 | dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); | |
4276 | dma_prefetch |= 0x8000; | |
4277 | writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); | |
4278 | pci_read_config_dword(h->pdev, PCI_COMMAND_PARITY, &dma_refetch); | |
4279 | dma_refetch |= 0x1; | |
4280 | pci_write_config_dword(h->pdev, PCI_COMMAND_PARITY, dma_refetch); | |
4281 | } | |
4282 | ||
f70dba83 | 4283 | static int __devinit cciss_pci_init(ctlr_info_t *h) |
6539fa9b | 4284 | { |
4809d098 | 4285 | int prod_index, err; |
6539fa9b | 4286 | |
f70dba83 | 4287 | prod_index = cciss_lookup_board_id(h->pdev, &h->board_id); |
6539fa9b | 4288 | if (prod_index < 0) |
2ec24ff1 | 4289 | return -ENODEV; |
f70dba83 SC |
4290 | h->product_name = products[prod_index].product_name; |
4291 | h->access = *(products[prod_index].access); | |
1da177e4 | 4292 | |
f70dba83 | 4293 | if (cciss_board_disabled(h)) { |
b2a4a43d | 4294 | dev_warn(&h->pdev->dev, "controller appears to be disabled\n"); |
c33ac89b | 4295 | return -ENODEV; |
1da177e4 | 4296 | } |
f70dba83 | 4297 | err = pci_enable_device(h->pdev); |
7c832835 | 4298 | if (err) { |
b2a4a43d | 4299 | dev_warn(&h->pdev->dev, "Unable to Enable PCI device\n"); |
c33ac89b | 4300 | return err; |
f92e2f5f MM |
4301 | } |
4302 | ||
f70dba83 | 4303 | err = pci_request_regions(h->pdev, "cciss"); |
4e570309 | 4304 | if (err) { |
b2a4a43d SC |
4305 | dev_warn(&h->pdev->dev, |
4306 | "Cannot obtain PCI resources, aborting\n"); | |
872225ca | 4307 | return err; |
4e570309 | 4308 | } |
1da177e4 | 4309 | |
b2a4a43d SC |
4310 | dev_dbg(&h->pdev->dev, "irq = %x\n", h->pdev->irq); |
4311 | dev_dbg(&h->pdev->dev, "board_id = %x\n", h->board_id); | |
1da177e4 | 4312 | |
fb86a35b MM |
4313 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
4314 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
4315 | */ | |
f70dba83 SC |
4316 | cciss_interrupt_mode(h); |
4317 | err = cciss_pci_find_memory_BAR(h->pdev, &h->paddr); | |
d474830d | 4318 | if (err) |
e1438581 | 4319 | goto err_out_free_res; |
f70dba83 SC |
4320 | h->vaddr = remap_pci_mem(h->paddr, 0x250); |
4321 | if (!h->vaddr) { | |
da550321 SC |
4322 | err = -ENOMEM; |
4323 | goto err_out_free_res; | |
7c832835 | 4324 | } |
afa842fa | 4325 | err = cciss_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); |
e99ba136 | 4326 | if (err) |
4e570309 | 4327 | goto err_out_free_res; |
f70dba83 | 4328 | err = cciss_find_cfgtables(h); |
4809d098 | 4329 | if (err) |
4e570309 | 4330 | goto err_out_free_res; |
b2a4a43d | 4331 | print_cfg_table(h); |
f70dba83 | 4332 | cciss_find_board_params(h); |
1da177e4 | 4333 | |
f70dba83 | 4334 | if (!CISS_signature_present(h)) { |
c33ac89b | 4335 | err = -ENODEV; |
4e570309 | 4336 | goto err_out_free_res; |
1da177e4 | 4337 | } |
f70dba83 SC |
4338 | cciss_enable_scsi_prefetch(h); |
4339 | cciss_p600_dma_prefetch_quirk(h); | |
4340 | cciss_put_controller_into_performant_mode(h); | |
1da177e4 LT |
4341 | return 0; |
4342 | ||
5faad620 | 4343 | err_out_free_res: |
872225ca MM |
4344 | /* |
4345 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4346 | * Smart Array controllers that pci_enable_device does not undo | |
4347 | */ | |
f70dba83 SC |
4348 | if (h->transtable) |
4349 | iounmap(h->transtable); | |
4350 | if (h->cfgtable) | |
4351 | iounmap(h->cfgtable); | |
4352 | if (h->vaddr) | |
4353 | iounmap(h->vaddr); | |
4354 | pci_release_regions(h->pdev); | |
c33ac89b | 4355 | return err; |
1da177e4 LT |
4356 | } |
4357 | ||
6ae5ce8e MM |
4358 | /* Function to find the first free pointer into our hba[] array |
4359 | * Returns -1 if no free entries are left. | |
7c832835 | 4360 | */ |
b2a4a43d | 4361 | static int alloc_cciss_hba(struct pci_dev *pdev) |
1da177e4 | 4362 | { |
799202cb | 4363 | int i; |
1da177e4 | 4364 | |
7c832835 | 4365 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 | 4366 | if (!hba[i]) { |
f70dba83 | 4367 | ctlr_info_t *h; |
f2912a12 | 4368 | |
f70dba83 SC |
4369 | h = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
4370 | if (!h) | |
1da177e4 | 4371 | goto Enomem; |
f70dba83 | 4372 | hba[i] = h; |
1da177e4 LT |
4373 | return i; |
4374 | } | |
4375 | } | |
b2a4a43d | 4376 | dev_warn(&pdev->dev, "This driver supports a maximum" |
7c832835 | 4377 | " of %d controllers.\n", MAX_CTLR); |
799202cb MM |
4378 | return -1; |
4379 | Enomem: | |
b2a4a43d | 4380 | dev_warn(&pdev->dev, "out of memory.\n"); |
1da177e4 LT |
4381 | return -1; |
4382 | } | |
4383 | ||
f70dba83 | 4384 | static void free_hba(ctlr_info_t *h) |
1da177e4 | 4385 | { |
2c935593 | 4386 | int i; |
1da177e4 | 4387 | |
f70dba83 | 4388 | hba[h->ctlr] = NULL; |
2c935593 SC |
4389 | for (i = 0; i < h->highest_lun + 1; i++) |
4390 | if (h->gendisk[i] != NULL) | |
4391 | put_disk(h->gendisk[i]); | |
4392 | kfree(h); | |
1da177e4 LT |
4393 | } |
4394 | ||
82eb03cf CC |
4395 | /* Send a message CDB to the firmware. */ |
4396 | static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) | |
4397 | { | |
4398 | typedef struct { | |
4399 | CommandListHeader_struct CommandHeader; | |
4400 | RequestBlock_struct Request; | |
4401 | ErrDescriptor_struct ErrorDescriptor; | |
4402 | } Command; | |
4403 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); | |
4404 | Command *cmd; | |
4405 | dma_addr_t paddr64; | |
4406 | uint32_t paddr32, tag; | |
4407 | void __iomem *vaddr; | |
4408 | int i, err; | |
4409 | ||
4410 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
4411 | if (vaddr == NULL) | |
4412 | return -ENOMEM; | |
4413 | ||
4414 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the | |
4415 | CCISS commands, so they must be allocated from the lower 4GiB of | |
4416 | memory. */ | |
e930438c | 4417 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
82eb03cf CC |
4418 | if (err) { |
4419 | iounmap(vaddr); | |
4420 | return -ENOMEM; | |
4421 | } | |
4422 | ||
4423 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); | |
4424 | if (cmd == NULL) { | |
4425 | iounmap(vaddr); | |
4426 | return -ENOMEM; | |
4427 | } | |
4428 | ||
4429 | /* This must fit, because of the 32-bit consistent DMA mask. Also, | |
4430 | although there's no guarantee, we assume that the address is at | |
4431 | least 4-byte aligned (most likely, it's page-aligned). */ | |
4432 | paddr32 = paddr64; | |
4433 | ||
4434 | cmd->CommandHeader.ReplyQueue = 0; | |
4435 | cmd->CommandHeader.SGList = 0; | |
4436 | cmd->CommandHeader.SGTotal = 0; | |
4437 | cmd->CommandHeader.Tag.lower = paddr32; | |
4438 | cmd->CommandHeader.Tag.upper = 0; | |
4439 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); | |
4440 | ||
4441 | cmd->Request.CDBLen = 16; | |
4442 | cmd->Request.Type.Type = TYPE_MSG; | |
4443 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; | |
4444 | cmd->Request.Type.Direction = XFER_NONE; | |
4445 | cmd->Request.Timeout = 0; /* Don't time out */ | |
4446 | cmd->Request.CDB[0] = opcode; | |
4447 | cmd->Request.CDB[1] = type; | |
4448 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ | |
4449 | ||
4450 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); | |
4451 | cmd->ErrorDescriptor.Addr.upper = 0; | |
4452 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); | |
4453 | ||
4454 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); | |
4455 | ||
4456 | for (i = 0; i < 10; i++) { | |
4457 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); | |
4458 | if ((tag & ~3) == paddr32) | |
4459 | break; | |
3e28601f | 4460 | msleep(CCISS_POST_RESET_NOOP_TIMEOUT_MSECS); |
82eb03cf CC |
4461 | } |
4462 | ||
4463 | iounmap(vaddr); | |
4464 | ||
4465 | /* we leak the DMA buffer here ... no choice since the controller could | |
4466 | still complete the command. */ | |
4467 | if (i == 10) { | |
b2a4a43d SC |
4468 | dev_err(&pdev->dev, |
4469 | "controller message %02x:%02x timed out\n", | |
82eb03cf CC |
4470 | opcode, type); |
4471 | return -ETIMEDOUT; | |
4472 | } | |
4473 | ||
4474 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); | |
4475 | ||
4476 | if (tag & 2) { | |
b2a4a43d | 4477 | dev_err(&pdev->dev, "controller message %02x:%02x failed\n", |
82eb03cf CC |
4478 | opcode, type); |
4479 | return -EIO; | |
4480 | } | |
4481 | ||
b2a4a43d | 4482 | dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", |
82eb03cf CC |
4483 | opcode, type); |
4484 | return 0; | |
4485 | } | |
4486 | ||
82eb03cf CC |
4487 | #define cciss_noop(p) cciss_message(p, 3, 0) |
4488 | ||
a6528d01 | 4489 | static int cciss_controller_hard_reset(struct pci_dev *pdev, |
bf2e2e6b | 4490 | void * __iomem vaddr, u32 use_doorbell) |
82eb03cf | 4491 | { |
a6528d01 SC |
4492 | u16 pmcsr; |
4493 | int pos; | |
82eb03cf | 4494 | |
a6528d01 SC |
4495 | if (use_doorbell) { |
4496 | /* For everything after the P600, the PCI power state method | |
4497 | * of resetting the controller doesn't work, so we have this | |
4498 | * other way using the doorbell register. | |
4499 | */ | |
4500 | dev_info(&pdev->dev, "using doorbell to reset controller\n"); | |
bf2e2e6b | 4501 | writel(use_doorbell, vaddr + SA5_DOORBELL); |
a6528d01 SC |
4502 | } else { /* Try to do it the PCI power state way */ |
4503 | ||
4504 | /* Quoting from the Open CISS Specification: "The Power | |
4505 | * Management Control/Status Register (CSR) controls the power | |
4506 | * state of the device. The normal operating state is D0, | |
4507 | * CSR=00h. The software off state is D3, CSR=03h. To reset | |
4508 | * the controller, place the interface device in D3 then to D0, | |
4509 | * this causes a secondary PCI reset which will reset the | |
4510 | * controller." */ | |
4511 | ||
4512 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); | |
4513 | if (pos == 0) { | |
4514 | dev_err(&pdev->dev, | |
4515 | "cciss_controller_hard_reset: " | |
4516 | "PCI PM not supported\n"); | |
4517 | return -ENODEV; | |
4518 | } | |
4519 | dev_info(&pdev->dev, "using PCI PM to reset controller\n"); | |
4520 | /* enter the D3hot power management state */ | |
4521 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); | |
4522 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4523 | pmcsr |= PCI_D3hot; | |
4524 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
82eb03cf | 4525 | |
a6528d01 | 4526 | msleep(500); |
82eb03cf | 4527 | |
a6528d01 SC |
4528 | /* enter the D0 power management state */ |
4529 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4530 | pmcsr |= PCI_D0; | |
4531 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
a6528d01 SC |
4532 | } |
4533 | return 0; | |
4534 | } | |
82eb03cf | 4535 | |
62710ae1 SC |
4536 | static __devinit void init_driver_version(char *driver_version, int len) |
4537 | { | |
4538 | memset(driver_version, 0, len); | |
4539 | strncpy(driver_version, "cciss " DRIVER_NAME, len - 1); | |
4540 | } | |
4541 | ||
4542 | static __devinit int write_driver_ver_to_cfgtable( | |
4543 | CfgTable_struct __iomem *cfgtable) | |
4544 | { | |
4545 | char *driver_version; | |
4546 | int i, size = sizeof(cfgtable->driver_version); | |
4547 | ||
4548 | driver_version = kmalloc(size, GFP_KERNEL); | |
4549 | if (!driver_version) | |
4550 | return -ENOMEM; | |
4551 | ||
4552 | init_driver_version(driver_version, size); | |
4553 | for (i = 0; i < size; i++) | |
4554 | writeb(driver_version[i], &cfgtable->driver_version[i]); | |
4555 | kfree(driver_version); | |
4556 | return 0; | |
4557 | } | |
4558 | ||
4559 | static __devinit void read_driver_ver_from_cfgtable( | |
4560 | CfgTable_struct __iomem *cfgtable, unsigned char *driver_ver) | |
4561 | { | |
4562 | int i; | |
4563 | ||
4564 | for (i = 0; i < sizeof(cfgtable->driver_version); i++) | |
4565 | driver_ver[i] = readb(&cfgtable->driver_version[i]); | |
4566 | } | |
4567 | ||
4568 | static __devinit int controller_reset_failed( | |
4569 | CfgTable_struct __iomem *cfgtable) | |
4570 | { | |
4571 | ||
4572 | char *driver_ver, *old_driver_ver; | |
4573 | int rc, size = sizeof(cfgtable->driver_version); | |
4574 | ||
4575 | old_driver_ver = kmalloc(2 * size, GFP_KERNEL); | |
4576 | if (!old_driver_ver) | |
4577 | return -ENOMEM; | |
4578 | driver_ver = old_driver_ver + size; | |
4579 | ||
4580 | /* After a reset, the 32 bytes of "driver version" in the cfgtable | |
4581 | * should have been changed, otherwise we know the reset failed. | |
4582 | */ | |
4583 | init_driver_version(old_driver_ver, size); | |
4584 | read_driver_ver_from_cfgtable(cfgtable, driver_ver); | |
4585 | rc = !memcmp(driver_ver, old_driver_ver, size); | |
4586 | kfree(old_driver_ver); | |
4587 | return rc; | |
4588 | } | |
4589 | ||
a6528d01 SC |
4590 | /* This does a hard reset of the controller using PCI power management |
4591 | * states or using the doorbell register. */ | |
4592 | static __devinit int cciss_kdump_hard_reset_controller(struct pci_dev *pdev) | |
4593 | { | |
a6528d01 SC |
4594 | u64 cfg_offset; |
4595 | u32 cfg_base_addr; | |
4596 | u64 cfg_base_addr_index; | |
4597 | void __iomem *vaddr; | |
4598 | unsigned long paddr; | |
62710ae1 | 4599 | u32 misc_fw_support; |
f442e64b | 4600 | int rc; |
a6528d01 | 4601 | CfgTable_struct __iomem *cfgtable; |
bf2e2e6b | 4602 | u32 use_doorbell; |
058a0f9f | 4603 | u32 board_id; |
f442e64b | 4604 | u16 command_register; |
a6528d01 SC |
4605 | |
4606 | /* For controllers as old a the p600, this is very nearly | |
4607 | * the same thing as | |
4608 | * | |
4609 | * pci_save_state(pci_dev); | |
4610 | * pci_set_power_state(pci_dev, PCI_D3hot); | |
4611 | * pci_set_power_state(pci_dev, PCI_D0); | |
4612 | * pci_restore_state(pci_dev); | |
4613 | * | |
a6528d01 SC |
4614 | * For controllers newer than the P600, the pci power state |
4615 | * method of resetting doesn't work so we have another way | |
4616 | * using the doorbell register. | |
4617 | */ | |
82eb03cf | 4618 | |
058a0f9f SC |
4619 | /* Exclude 640x boards. These are two pci devices in one slot |
4620 | * which share a battery backed cache module. One controls the | |
4621 | * cache, the other accesses the cache through the one that controls | |
4622 | * it. If we reset the one controlling the cache, the other will | |
4623 | * likely not be happy. Just forbid resetting this conjoined mess. | |
4624 | */ | |
4625 | cciss_lookup_board_id(pdev, &board_id); | |
ec52d5f1 | 4626 | if (!ctlr_is_resettable(board_id)) { |
058a0f9f SC |
4627 | dev_warn(&pdev->dev, "Cannot reset Smart Array 640x " |
4628 | "due to shared cache module."); | |
82eb03cf CC |
4629 | return -ENODEV; |
4630 | } | |
4631 | ||
ec52d5f1 SC |
4632 | /* if controller is soft- but not hard resettable... */ |
4633 | if (!ctlr_is_hard_resettable(board_id)) | |
4634 | return -ENOTSUPP; /* try soft reset later. */ | |
4635 | ||
f442e64b SC |
4636 | /* Save the PCI command register */ |
4637 | pci_read_config_word(pdev, 4, &command_register); | |
4638 | /* Turn the board off. This is so that later pci_restore_state() | |
4639 | * won't turn the board on before the rest of config space is ready. | |
4640 | */ | |
4641 | pci_disable_device(pdev); | |
4642 | pci_save_state(pdev); | |
82eb03cf | 4643 | |
a6528d01 SC |
4644 | /* find the first memory BAR, so we can find the cfg table */ |
4645 | rc = cciss_pci_find_memory_BAR(pdev, &paddr); | |
4646 | if (rc) | |
4647 | return rc; | |
4648 | vaddr = remap_pci_mem(paddr, 0x250); | |
4649 | if (!vaddr) | |
4650 | return -ENOMEM; | |
82eb03cf | 4651 | |
a6528d01 SC |
4652 | /* find cfgtable in order to check if reset via doorbell is supported */ |
4653 | rc = cciss_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, | |
4654 | &cfg_base_addr_index, &cfg_offset); | |
4655 | if (rc) | |
4656 | goto unmap_vaddr; | |
4657 | cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
4658 | cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); | |
4659 | if (!cfgtable) { | |
4660 | rc = -ENOMEM; | |
4661 | goto unmap_vaddr; | |
4662 | } | |
62710ae1 SC |
4663 | rc = write_driver_ver_to_cfgtable(cfgtable); |
4664 | if (rc) | |
4665 | goto unmap_vaddr; | |
82eb03cf | 4666 | |
bf2e2e6b SC |
4667 | /* If reset via doorbell register is supported, use that. |
4668 | * There are two such methods. Favor the newest method. | |
75230ff2 | 4669 | */ |
bf2e2e6b SC |
4670 | misc_fw_support = readl(&cfgtable->misc_fw_support); |
4671 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2; | |
4672 | if (use_doorbell) { | |
4673 | use_doorbell = DOORBELL_CTLR_RESET2; | |
4674 | } else { | |
4675 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; | |
4676 | if (use_doorbell) | |
4677 | use_doorbell = DOORBELL_CTLR_RESET; | |
4678 | } | |
75230ff2 | 4679 | |
a6528d01 SC |
4680 | rc = cciss_controller_hard_reset(pdev, vaddr, use_doorbell); |
4681 | if (rc) | |
4682 | goto unmap_cfgtable; | |
f442e64b SC |
4683 | pci_restore_state(pdev); |
4684 | rc = pci_enable_device(pdev); | |
4685 | if (rc) { | |
4686 | dev_warn(&pdev->dev, "failed to enable device.\n"); | |
4687 | goto unmap_cfgtable; | |
82eb03cf | 4688 | } |
f442e64b | 4689 | pci_write_config_word(pdev, 4, command_register); |
82eb03cf | 4690 | |
a6528d01 SC |
4691 | /* Some devices (notably the HP Smart Array 5i Controller) |
4692 | need a little pause here */ | |
4693 | msleep(CCISS_POST_RESET_PAUSE_MSECS); | |
4694 | ||
afa842fa | 4695 | /* Wait for board to become not ready, then ready. */ |
59ec86bb | 4696 | dev_info(&pdev->dev, "Waiting for board to reset.\n"); |
afa842fa | 4697 | rc = cciss_wait_for_board_state(pdev, vaddr, BOARD_NOT_READY); |
5afe2781 SC |
4698 | if (rc) { |
4699 | dev_warn(&pdev->dev, "Failed waiting for board to hard reset." | |
4700 | " Will try soft reset.\n"); | |
4701 | rc = -ENOTSUPP; /* Not expected, but try soft reset later */ | |
4702 | goto unmap_cfgtable; | |
4703 | } | |
afa842fa SC |
4704 | rc = cciss_wait_for_board_state(pdev, vaddr, BOARD_READY); |
4705 | if (rc) { | |
4706 | dev_warn(&pdev->dev, | |
5afe2781 SC |
4707 | "failed waiting for board to become ready " |
4708 | "after hard reset\n"); | |
afa842fa SC |
4709 | goto unmap_cfgtable; |
4710 | } | |
afa842fa | 4711 | |
62710ae1 SC |
4712 | rc = controller_reset_failed(vaddr); |
4713 | if (rc < 0) | |
4714 | goto unmap_cfgtable; | |
4715 | if (rc) { | |
5afe2781 SC |
4716 | dev_warn(&pdev->dev, "Unable to successfully hard reset " |
4717 | "controller. Will try soft reset.\n"); | |
4718 | rc = -ENOTSUPP; /* Not expected, but try soft reset later */ | |
62710ae1 | 4719 | } else { |
5afe2781 | 4720 | dev_info(&pdev->dev, "Board ready after hard reset.\n"); |
a6528d01 SC |
4721 | } |
4722 | ||
4723 | unmap_cfgtable: | |
4724 | iounmap(cfgtable); | |
4725 | ||
4726 | unmap_vaddr: | |
4727 | iounmap(vaddr); | |
4728 | return rc; | |
82eb03cf CC |
4729 | } |
4730 | ||
83123cb1 SC |
4731 | static __devinit int cciss_init_reset_devices(struct pci_dev *pdev) |
4732 | { | |
a6528d01 | 4733 | int rc, i; |
83123cb1 SC |
4734 | |
4735 | if (!reset_devices) | |
4736 | return 0; | |
4737 | ||
a6528d01 SC |
4738 | /* Reset the controller with a PCI power-cycle or via doorbell */ |
4739 | rc = cciss_kdump_hard_reset_controller(pdev); | |
83123cb1 | 4740 | |
a6528d01 SC |
4741 | /* -ENOTSUPP here means we cannot reset the controller |
4742 | * but it's already (and still) up and running in | |
058a0f9f SC |
4743 | * "performant mode". Or, it might be 640x, which can't reset |
4744 | * due to concerns about shared bbwc between 6402/6404 pair. | |
a6528d01 SC |
4745 | */ |
4746 | if (rc == -ENOTSUPP) | |
5afe2781 | 4747 | return rc; /* just try to do the kdump anyhow. */ |
a6528d01 SC |
4748 | if (rc) |
4749 | return -ENODEV; | |
83123cb1 SC |
4750 | |
4751 | /* Now try to get the controller to respond to a no-op */ | |
59ec86bb | 4752 | dev_warn(&pdev->dev, "Waiting for controller to respond to no-op\n"); |
83123cb1 SC |
4753 | for (i = 0; i < CCISS_POST_RESET_NOOP_RETRIES; i++) { |
4754 | if (cciss_noop(pdev) == 0) | |
4755 | break; | |
4756 | else | |
4757 | dev_warn(&pdev->dev, "no-op failed%s\n", | |
4758 | (i < CCISS_POST_RESET_NOOP_RETRIES - 1 ? | |
4759 | "; re-trying" : "")); | |
4760 | msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS); | |
4761 | } | |
82eb03cf CC |
4762 | return 0; |
4763 | } | |
4764 | ||
54dae343 SC |
4765 | static __devinit int cciss_allocate_cmd_pool(ctlr_info_t *h) |
4766 | { | |
4767 | h->cmd_pool_bits = kmalloc( | |
4768 | DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) * | |
4769 | sizeof(unsigned long), GFP_KERNEL); | |
4770 | h->cmd_pool = pci_alloc_consistent(h->pdev, | |
4771 | h->nr_cmds * sizeof(CommandList_struct), | |
4772 | &(h->cmd_pool_dhandle)); | |
4773 | h->errinfo_pool = pci_alloc_consistent(h->pdev, | |
4774 | h->nr_cmds * sizeof(ErrorInfo_struct), | |
4775 | &(h->errinfo_pool_dhandle)); | |
4776 | if ((h->cmd_pool_bits == NULL) | |
4777 | || (h->cmd_pool == NULL) | |
4778 | || (h->errinfo_pool == NULL)) { | |
4779 | dev_err(&h->pdev->dev, "out of memory"); | |
4780 | return -ENOMEM; | |
4781 | } | |
4782 | return 0; | |
4783 | } | |
4784 | ||
abf7966e SC |
4785 | static __devinit int cciss_allocate_scatterlists(ctlr_info_t *h) |
4786 | { | |
4787 | int i; | |
4788 | ||
4789 | /* zero it, so that on free we need not know how many were alloc'ed */ | |
4790 | h->scatter_list = kzalloc(h->max_commands * | |
4791 | sizeof(struct scatterlist *), GFP_KERNEL); | |
4792 | if (!h->scatter_list) | |
4793 | return -ENOMEM; | |
4794 | ||
4795 | for (i = 0; i < h->nr_cmds; i++) { | |
4796 | h->scatter_list[i] = kmalloc(sizeof(struct scatterlist) * | |
4797 | h->maxsgentries, GFP_KERNEL); | |
4798 | if (h->scatter_list[i] == NULL) { | |
4799 | dev_err(&h->pdev->dev, "could not allocate " | |
4800 | "s/g lists\n"); | |
4801 | return -ENOMEM; | |
4802 | } | |
4803 | } | |
4804 | return 0; | |
4805 | } | |
4806 | ||
4807 | static void cciss_free_scatterlists(ctlr_info_t *h) | |
4808 | { | |
4809 | int i; | |
4810 | ||
4811 | if (h->scatter_list) { | |
4812 | for (i = 0; i < h->nr_cmds; i++) | |
4813 | kfree(h->scatter_list[i]); | |
4814 | kfree(h->scatter_list); | |
4815 | } | |
4816 | } | |
4817 | ||
54dae343 SC |
4818 | static void cciss_free_cmd_pool(ctlr_info_t *h) |
4819 | { | |
4820 | kfree(h->cmd_pool_bits); | |
4821 | if (h->cmd_pool) | |
4822 | pci_free_consistent(h->pdev, | |
4823 | h->nr_cmds * sizeof(CommandList_struct), | |
4824 | h->cmd_pool, h->cmd_pool_dhandle); | |
4825 | if (h->errinfo_pool) | |
4826 | pci_free_consistent(h->pdev, | |
4827 | h->nr_cmds * sizeof(ErrorInfo_struct), | |
4828 | h->errinfo_pool, h->errinfo_pool_dhandle); | |
4829 | } | |
4830 | ||
2b48085f SC |
4831 | static int cciss_request_irq(ctlr_info_t *h, |
4832 | irqreturn_t (*msixhandler)(int, void *), | |
4833 | irqreturn_t (*intxhandler)(int, void *)) | |
4834 | { | |
4835 | if (h->msix_vector || h->msi_vector) { | |
4836 | if (!request_irq(h->intr[PERF_MODE_INT], msixhandler, | |
4837 | IRQF_DISABLED, h->devname, h)) | |
4838 | return 0; | |
4839 | dev_err(&h->pdev->dev, "Unable to get msi irq %d" | |
4840 | " for %s\n", h->intr[PERF_MODE_INT], | |
4841 | h->devname); | |
4842 | return -1; | |
4843 | } | |
4844 | ||
4845 | if (!request_irq(h->intr[PERF_MODE_INT], intxhandler, | |
4846 | IRQF_DISABLED, h->devname, h)) | |
4847 | return 0; | |
4848 | dev_err(&h->pdev->dev, "Unable to get irq %d for %s\n", | |
4849 | h->intr[PERF_MODE_INT], h->devname); | |
4850 | return -1; | |
4851 | } | |
4852 | ||
5afe2781 SC |
4853 | static int __devinit cciss_kdump_soft_reset(ctlr_info_t *h) |
4854 | { | |
4855 | if (cciss_send_reset(h, CTLR_LUNID, CCISS_RESET_TYPE_CONTROLLER)) { | |
4856 | dev_warn(&h->pdev->dev, "Resetting array controller failed.\n"); | |
4857 | return -EIO; | |
4858 | } | |
4859 | ||
4860 | dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n"); | |
4861 | if (cciss_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY)) { | |
4862 | dev_warn(&h->pdev->dev, "Soft reset had no effect.\n"); | |
4863 | return -1; | |
4864 | } | |
4865 | ||
4866 | dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n"); | |
4867 | if (cciss_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY)) { | |
4868 | dev_warn(&h->pdev->dev, "Board failed to become ready " | |
4869 | "after soft reset.\n"); | |
4870 | return -1; | |
4871 | } | |
4872 | ||
4873 | return 0; | |
4874 | } | |
4875 | ||
4876 | static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t *h) | |
4877 | { | |
4878 | int ctlr = h->ctlr; | |
4879 | ||
4880 | free_irq(h->intr[PERF_MODE_INT], h); | |
4881 | #ifdef CONFIG_PCI_MSI | |
4882 | if (h->msix_vector) | |
4883 | pci_disable_msix(h->pdev); | |
4884 | else if (h->msi_vector) | |
4885 | pci_disable_msi(h->pdev); | |
4886 | #endif /* CONFIG_PCI_MSI */ | |
4887 | cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds); | |
4888 | cciss_free_scatterlists(h); | |
4889 | cciss_free_cmd_pool(h); | |
4890 | kfree(h->blockFetchTable); | |
4891 | if (h->reply_pool) | |
4892 | pci_free_consistent(h->pdev, h->max_commands * sizeof(__u64), | |
4893 | h->reply_pool, h->reply_pool_dhandle); | |
4894 | if (h->transtable) | |
4895 | iounmap(h->transtable); | |
4896 | if (h->cfgtable) | |
4897 | iounmap(h->cfgtable); | |
4898 | if (h->vaddr) | |
4899 | iounmap(h->vaddr); | |
4900 | unregister_blkdev(h->major, h->devname); | |
4901 | cciss_destroy_hba_sysfs_entry(h); | |
4902 | pci_release_regions(h->pdev); | |
4903 | kfree(h); | |
4904 | hba[ctlr] = NULL; | |
4905 | } | |
4906 | ||
1da177e4 LT |
4907 | /* |
4908 | * This is it. Find all the controllers and register them. I really hate | |
4909 | * stealing all these major device numbers. | |
4910 | * returns the number of block devices registered. | |
4911 | */ | |
4912 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 4913 | const struct pci_device_id *ent) |
1da177e4 | 4914 | { |
1da177e4 | 4915 | int i; |
799202cb | 4916 | int j = 0; |
1da177e4 | 4917 | int rc; |
5afe2781 | 4918 | int try_soft_reset = 0; |
22bece00 | 4919 | int dac, return_code; |
212a5026 | 4920 | InquiryData_struct *inq_buff; |
f70dba83 | 4921 | ctlr_info_t *h; |
5afe2781 | 4922 | unsigned long flags; |
1da177e4 | 4923 | |
83123cb1 | 4924 | rc = cciss_init_reset_devices(pdev); |
5afe2781 SC |
4925 | if (rc) { |
4926 | if (rc != -ENOTSUPP) | |
4927 | return rc; | |
4928 | /* If the reset fails in a particular way (it has no way to do | |
4929 | * a proper hard reset, so returns -ENOTSUPP) we can try to do | |
4930 | * a soft reset once we get the controller configured up to the | |
4931 | * point that it can accept a command. | |
4932 | */ | |
4933 | try_soft_reset = 1; | |
4934 | rc = 0; | |
4935 | } | |
4936 | ||
4937 | reinit_after_soft_reset: | |
4938 | ||
b2a4a43d | 4939 | i = alloc_cciss_hba(pdev); |
7c832835 | 4940 | if (i < 0) |
e2019b58 | 4941 | return -1; |
1f8ef380 | 4942 | |
f70dba83 SC |
4943 | h = hba[i]; |
4944 | h->pdev = pdev; | |
4945 | h->busy_initializing = 1; | |
e6e1ee93 JA |
4946 | INIT_LIST_HEAD(&h->cmpQ); |
4947 | INIT_LIST_HEAD(&h->reqQ); | |
f70dba83 | 4948 | mutex_init(&h->busy_shutting_down); |
1f8ef380 | 4949 | |
f70dba83 | 4950 | if (cciss_pci_init(h) != 0) |
2cfa948c | 4951 | goto clean_no_release_regions; |
1da177e4 | 4952 | |
f70dba83 SC |
4953 | sprintf(h->devname, "cciss%d", i); |
4954 | h->ctlr = i; | |
1da177e4 | 4955 | |
f70dba83 | 4956 | init_completion(&h->scan_wait); |
b368c9dd | 4957 | |
f70dba83 | 4958 | if (cciss_create_hba_sysfs_entry(h)) |
7fe06326 AP |
4959 | goto clean0; |
4960 | ||
1da177e4 | 4961 | /* configure PCI DMA stuff */ |
6a35528a | 4962 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
40aabb58 | 4963 | dac = 1; |
284901a9 | 4964 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
40aabb58 | 4965 | dac = 0; |
1da177e4 | 4966 | else { |
b2a4a43d | 4967 | dev_err(&h->pdev->dev, "no suitable DMA available\n"); |
1da177e4 LT |
4968 | goto clean1; |
4969 | } | |
4970 | ||
4971 | /* | |
4972 | * register with the major number, or get a dynamic major number | |
4973 | * by passing 0 as argument. This is done for greater than | |
4974 | * 8 controller support. | |
4975 | */ | |
4976 | if (i < MAX_CTLR_ORIG) | |
f70dba83 SC |
4977 | h->major = COMPAQ_CISS_MAJOR + i; |
4978 | rc = register_blkdev(h->major, h->devname); | |
7c832835 | 4979 | if (rc == -EBUSY || rc == -EINVAL) { |
b2a4a43d SC |
4980 | dev_err(&h->pdev->dev, |
4981 | "Unable to get major number %d for %s " | |
f70dba83 | 4982 | "on hba %d\n", h->major, h->devname, i); |
1da177e4 | 4983 | goto clean1; |
7c832835 | 4984 | } else { |
1da177e4 | 4985 | if (i >= MAX_CTLR_ORIG) |
f70dba83 | 4986 | h->major = rc; |
1da177e4 LT |
4987 | } |
4988 | ||
4989 | /* make sure the board interrupts are off */ | |
f70dba83 | 4990 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
2b48085f SC |
4991 | rc = cciss_request_irq(h, do_cciss_msix_intr, do_cciss_intx); |
4992 | if (rc) | |
4993 | goto clean2; | |
40aabb58 | 4994 | |
b2a4a43d | 4995 | dev_info(&h->pdev->dev, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", |
f70dba83 SC |
4996 | h->devname, pdev->device, pci_name(pdev), |
4997 | h->intr[PERF_MODE_INT], dac ? "" : " not"); | |
7c832835 | 4998 | |
54dae343 | 4999 | if (cciss_allocate_cmd_pool(h)) |
1da177e4 | 5000 | goto clean4; |
5c07a311 | 5001 | |
abf7966e | 5002 | if (cciss_allocate_scatterlists(h)) |
4ee69851 DC |
5003 | goto clean4; |
5004 | ||
f70dba83 SC |
5005 | h->cmd_sg_list = cciss_allocate_sg_chain_blocks(h, |
5006 | h->chainsize, h->nr_cmds); | |
5007 | if (!h->cmd_sg_list && h->chainsize > 0) | |
5c07a311 | 5008 | goto clean4; |
5c07a311 | 5009 | |
f70dba83 | 5010 | spin_lock_init(&h->lock); |
1da177e4 | 5011 | |
7c832835 | 5012 | /* Initialize the pdev driver private data. |
f70dba83 SC |
5013 | have it point to h. */ |
5014 | pci_set_drvdata(pdev, h); | |
7c832835 BH |
5015 | /* command and error info recs zeroed out before |
5016 | they are used */ | |
f70dba83 SC |
5017 | memset(h->cmd_pool_bits, 0, |
5018 | DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) | |
061837bc | 5019 | * sizeof(unsigned long)); |
1da177e4 | 5020 | |
f70dba83 SC |
5021 | h->num_luns = 0; |
5022 | h->highest_lun = -1; | |
6ae5ce8e | 5023 | for (j = 0; j < CISS_MAX_LUN; j++) { |
f70dba83 SC |
5024 | h->drv[j] = NULL; |
5025 | h->gendisk[j] = NULL; | |
6ae5ce8e | 5026 | } |
1da177e4 | 5027 | |
5afe2781 SC |
5028 | /* At this point, the controller is ready to take commands. |
5029 | * Now, if reset_devices and the hard reset didn't work, try | |
5030 | * the soft reset and see if that works. | |
5031 | */ | |
5032 | if (try_soft_reset) { | |
5033 | ||
5034 | /* This is kind of gross. We may or may not get a completion | |
5035 | * from the soft reset command, and if we do, then the value | |
5036 | * from the fifo may or may not be valid. So, we wait 10 secs | |
5037 | * after the reset throwing away any completions we get during | |
5038 | * that time. Unregister the interrupt handler and register | |
5039 | * fake ones to scoop up any residual completions. | |
5040 | */ | |
5041 | spin_lock_irqsave(&h->lock, flags); | |
5042 | h->access.set_intr_mask(h, CCISS_INTR_OFF); | |
5043 | spin_unlock_irqrestore(&h->lock, flags); | |
5044 | free_irq(h->intr[PERF_MODE_INT], h); | |
5045 | rc = cciss_request_irq(h, cciss_msix_discard_completions, | |
5046 | cciss_intx_discard_completions); | |
5047 | if (rc) { | |
5048 | dev_warn(&h->pdev->dev, "Failed to request_irq after " | |
5049 | "soft reset.\n"); | |
5050 | goto clean4; | |
5051 | } | |
5052 | ||
5053 | rc = cciss_kdump_soft_reset(h); | |
5054 | if (rc) { | |
5055 | dev_warn(&h->pdev->dev, "Soft reset failed.\n"); | |
5056 | goto clean4; | |
5057 | } | |
5058 | ||
5059 | dev_info(&h->pdev->dev, "Board READY.\n"); | |
5060 | dev_info(&h->pdev->dev, | |
5061 | "Waiting for stale completions to drain.\n"); | |
5062 | h->access.set_intr_mask(h, CCISS_INTR_ON); | |
5063 | msleep(10000); | |
5064 | h->access.set_intr_mask(h, CCISS_INTR_OFF); | |
5065 | ||
5066 | rc = controller_reset_failed(h->cfgtable); | |
5067 | if (rc) | |
5068 | dev_info(&h->pdev->dev, | |
5069 | "Soft reset appears to have failed.\n"); | |
5070 | ||
5071 | /* since the controller's reset, we have to go back and re-init | |
5072 | * everything. Easiest to just forget what we've done and do it | |
5073 | * all over again. | |
5074 | */ | |
5075 | cciss_undo_allocations_after_kdump_soft_reset(h); | |
5076 | try_soft_reset = 0; | |
5077 | if (rc) | |
5078 | /* don't go to clean4, we already unallocated */ | |
5079 | return -ENODEV; | |
5080 | ||
5081 | goto reinit_after_soft_reset; | |
5082 | } | |
5083 | ||
f70dba83 | 5084 | cciss_scsi_setup(h); |
1da177e4 LT |
5085 | |
5086 | /* Turn the interrupts on so we can service requests */ | |
f70dba83 | 5087 | h->access.set_intr_mask(h, CCISS_INTR_ON); |
1da177e4 | 5088 | |
22bece00 MM |
5089 | /* Get the firmware version */ |
5090 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
5091 | if (inq_buff == NULL) { | |
b2a4a43d | 5092 | dev_err(&h->pdev->dev, "out of memory\n"); |
22bece00 MM |
5093 | goto clean4; |
5094 | } | |
5095 | ||
f70dba83 | 5096 | return_code = sendcmd_withirq(h, CISS_INQUIRY, inq_buff, |
b57695fe | 5097 | sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); |
22bece00 | 5098 | if (return_code == IO_OK) { |
f70dba83 SC |
5099 | h->firm_ver[0] = inq_buff->data_byte[32]; |
5100 | h->firm_ver[1] = inq_buff->data_byte[33]; | |
5101 | h->firm_ver[2] = inq_buff->data_byte[34]; | |
5102 | h->firm_ver[3] = inq_buff->data_byte[35]; | |
22bece00 | 5103 | } else { /* send command failed */ |
b2a4a43d | 5104 | dev_warn(&h->pdev->dev, "unable to determine firmware" |
22bece00 MM |
5105 | " version of controller\n"); |
5106 | } | |
212a5026 | 5107 | kfree(inq_buff); |
22bece00 | 5108 | |
f70dba83 | 5109 | cciss_procinit(h); |
92c4231a | 5110 | |
f70dba83 | 5111 | h->cciss_max_sectors = 8192; |
92c4231a | 5112 | |
f70dba83 SC |
5113 | rebuild_lun_table(h, 1, 0); |
5114 | h->busy_initializing = 0; | |
e2019b58 | 5115 | return 1; |
1da177e4 | 5116 | |
6ae5ce8e | 5117 | clean4: |
54dae343 | 5118 | cciss_free_cmd_pool(h); |
abf7966e | 5119 | cciss_free_scatterlists(h); |
f70dba83 | 5120 | cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds); |
f70dba83 | 5121 | free_irq(h->intr[PERF_MODE_INT], h); |
6ae5ce8e | 5122 | clean2: |
f70dba83 | 5123 | unregister_blkdev(h->major, h->devname); |
6ae5ce8e | 5124 | clean1: |
f70dba83 | 5125 | cciss_destroy_hba_sysfs_entry(h); |
7fe06326 | 5126 | clean0: |
2cfa948c SC |
5127 | pci_release_regions(pdev); |
5128 | clean_no_release_regions: | |
f70dba83 | 5129 | h->busy_initializing = 0; |
9cef0d2f | 5130 | |
872225ca MM |
5131 | /* |
5132 | * Deliberately omit pci_disable_device(): it does something nasty to | |
5133 | * Smart Array controllers that pci_enable_device does not undo | |
5134 | */ | |
799202cb | 5135 | pci_set_drvdata(pdev, NULL); |
f70dba83 | 5136 | free_hba(h); |
e2019b58 | 5137 | return -1; |
1da177e4 LT |
5138 | } |
5139 | ||
e9ca75b5 | 5140 | static void cciss_shutdown(struct pci_dev *pdev) |
1da177e4 | 5141 | { |
29009a03 SC |
5142 | ctlr_info_t *h; |
5143 | char *flush_buf; | |
7c832835 | 5144 | int return_code; |
1da177e4 | 5145 | |
29009a03 SC |
5146 | h = pci_get_drvdata(pdev); |
5147 | flush_buf = kzalloc(4, GFP_KERNEL); | |
5148 | if (!flush_buf) { | |
b2a4a43d | 5149 | dev_warn(&h->pdev->dev, "cache not flushed, out of memory.\n"); |
e9ca75b5 | 5150 | return; |
e9ca75b5 | 5151 | } |
29009a03 SC |
5152 | /* write all data in the battery backed cache to disk */ |
5153 | memset(flush_buf, 0, 4); | |
f70dba83 | 5154 | return_code = sendcmd_withirq(h, CCISS_CACHE_FLUSH, flush_buf, |
29009a03 SC |
5155 | 4, 0, CTLR_LUNID, TYPE_CMD); |
5156 | kfree(flush_buf); | |
5157 | if (return_code != IO_OK) | |
b2a4a43d | 5158 | dev_warn(&h->pdev->dev, "Error flushing cache\n"); |
29009a03 | 5159 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
5e216153 | 5160 | free_irq(h->intr[PERF_MODE_INT], h); |
e9ca75b5 GB |
5161 | } |
5162 | ||
5163 | static void __devexit cciss_remove_one(struct pci_dev *pdev) | |
5164 | { | |
f70dba83 | 5165 | ctlr_info_t *h; |
e9ca75b5 GB |
5166 | int i, j; |
5167 | ||
7c832835 | 5168 | if (pci_get_drvdata(pdev) == NULL) { |
b2a4a43d | 5169 | dev_err(&pdev->dev, "Unable to remove device\n"); |
1da177e4 LT |
5170 | return; |
5171 | } | |
0a9279cc | 5172 | |
f70dba83 SC |
5173 | h = pci_get_drvdata(pdev); |
5174 | i = h->ctlr; | |
7c832835 | 5175 | if (hba[i] == NULL) { |
b2a4a43d | 5176 | dev_err(&pdev->dev, "device appears to already be removed\n"); |
1da177e4 LT |
5177 | return; |
5178 | } | |
b6550777 | 5179 | |
f70dba83 | 5180 | mutex_lock(&h->busy_shutting_down); |
0a9279cc | 5181 | |
f70dba83 SC |
5182 | remove_from_scan_list(h); |
5183 | remove_proc_entry(h->devname, proc_cciss); | |
5184 | unregister_blkdev(h->major, h->devname); | |
b6550777 BH |
5185 | |
5186 | /* remove it from the disk list */ | |
5187 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
f70dba83 | 5188 | struct gendisk *disk = h->gendisk[j]; |
b6550777 | 5189 | if (disk) { |
165125e1 | 5190 | struct request_queue *q = disk->queue; |
b6550777 | 5191 | |
097d0264 | 5192 | if (disk->flags & GENHD_FL_UP) { |
f70dba83 | 5193 | cciss_destroy_ld_sysfs_entry(h, j, 1); |
b6550777 | 5194 | del_gendisk(disk); |
097d0264 | 5195 | } |
b6550777 BH |
5196 | if (q) |
5197 | blk_cleanup_queue(q); | |
5198 | } | |
5199 | } | |
5200 | ||
ba198efb | 5201 | #ifdef CONFIG_CISS_SCSI_TAPE |
f70dba83 | 5202 | cciss_unregister_scsi(h); /* unhook from SCSI subsystem */ |
ba198efb | 5203 | #endif |
b6550777 | 5204 | |
e9ca75b5 | 5205 | cciss_shutdown(pdev); |
fb86a35b MM |
5206 | |
5207 | #ifdef CONFIG_PCI_MSI | |
f70dba83 SC |
5208 | if (h->msix_vector) |
5209 | pci_disable_msix(h->pdev); | |
5210 | else if (h->msi_vector) | |
5211 | pci_disable_msi(h->pdev); | |
7c832835 | 5212 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 5213 | |
f70dba83 SC |
5214 | iounmap(h->transtable); |
5215 | iounmap(h->cfgtable); | |
5216 | iounmap(h->vaddr); | |
1da177e4 | 5217 | |
54dae343 | 5218 | cciss_free_cmd_pool(h); |
5c07a311 | 5219 | /* Free up sg elements */ |
f70dba83 SC |
5220 | for (j = 0; j < h->nr_cmds; j++) |
5221 | kfree(h->scatter_list[j]); | |
5222 | kfree(h->scatter_list); | |
5223 | cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds); | |
e363e014 SC |
5224 | kfree(h->blockFetchTable); |
5225 | if (h->reply_pool) | |
5226 | pci_free_consistent(h->pdev, h->max_commands * sizeof(__u64), | |
5227 | h->reply_pool, h->reply_pool_dhandle); | |
872225ca MM |
5228 | /* |
5229 | * Deliberately omit pci_disable_device(): it does something nasty to | |
5230 | * Smart Array controllers that pci_enable_device does not undo | |
5231 | */ | |
7c832835 | 5232 | pci_release_regions(pdev); |
4e570309 | 5233 | pci_set_drvdata(pdev, NULL); |
f70dba83 SC |
5234 | cciss_destroy_hba_sysfs_entry(h); |
5235 | mutex_unlock(&h->busy_shutting_down); | |
5236 | free_hba(h); | |
7c832835 | 5237 | } |
1da177e4 LT |
5238 | |
5239 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
5240 | .name = "cciss", |
5241 | .probe = cciss_init_one, | |
5242 | .remove = __devexit_p(cciss_remove_one), | |
5243 | .id_table = cciss_pci_device_id, /* id_table */ | |
e9ca75b5 | 5244 | .shutdown = cciss_shutdown, |
1da177e4 LT |
5245 | }; |
5246 | ||
5247 | /* | |
5248 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 5249 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
5250 | */ |
5251 | static int __init cciss_init(void) | |
5252 | { | |
7fe06326 AP |
5253 | int err; |
5254 | ||
10cbda97 JA |
5255 | /* |
5256 | * The hardware requires that commands are aligned on a 64-bit | |
5257 | * boundary. Given that we use pci_alloc_consistent() to allocate an | |
5258 | * array of them, the size must be a multiple of 8 bytes. | |
5259 | */ | |
1b7d0d28 | 5260 | BUILD_BUG_ON(sizeof(CommandList_struct) % COMMANDLIST_ALIGNMENT); |
1da177e4 LT |
5261 | printk(KERN_INFO DRIVER_NAME "\n"); |
5262 | ||
7fe06326 AP |
5263 | err = bus_register(&cciss_bus_type); |
5264 | if (err) | |
5265 | return err; | |
5266 | ||
b368c9dd AP |
5267 | /* Start the scan thread */ |
5268 | cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan"); | |
5269 | if (IS_ERR(cciss_scan_thread)) { | |
5270 | err = PTR_ERR(cciss_scan_thread); | |
5271 | goto err_bus_unregister; | |
5272 | } | |
5273 | ||
1da177e4 | 5274 | /* Register for our PCI devices */ |
7fe06326 AP |
5275 | err = pci_register_driver(&cciss_pci_driver); |
5276 | if (err) | |
b368c9dd | 5277 | goto err_thread_stop; |
7fe06326 | 5278 | |
617e1344 | 5279 | return err; |
7fe06326 | 5280 | |
b368c9dd AP |
5281 | err_thread_stop: |
5282 | kthread_stop(cciss_scan_thread); | |
5283 | err_bus_unregister: | |
7fe06326 | 5284 | bus_unregister(&cciss_bus_type); |
b368c9dd | 5285 | |
7fe06326 | 5286 | return err; |
1da177e4 LT |
5287 | } |
5288 | ||
5289 | static void __exit cciss_cleanup(void) | |
5290 | { | |
5291 | int i; | |
5292 | ||
5293 | pci_unregister_driver(&cciss_pci_driver); | |
5294 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
5295 | for (i = 0; i < MAX_CTLR; i++) { |
5296 | if (hba[i] != NULL) { | |
b2a4a43d SC |
5297 | dev_warn(&hba[i]->pdev->dev, |
5298 | "had to remove controller\n"); | |
1da177e4 LT |
5299 | cciss_remove_one(hba[i]->pdev); |
5300 | } | |
5301 | } | |
b368c9dd | 5302 | kthread_stop(cciss_scan_thread); |
90fdb0b9 JA |
5303 | if (proc_cciss) |
5304 | remove_proc_entry("driver/cciss", NULL); | |
7fe06326 | 5305 | bus_unregister(&cciss_bus_type); |
1da177e4 LT |
5306 | } |
5307 | ||
5308 | module_init(cciss_init); | |
5309 | module_exit(cciss_cleanup); |