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Commit | Line | Data |
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1da177e4 | 1 | /* |
bd4f36d6 MM |
2 | * Disk Array driver for HP Smart Array controllers. |
3 | * (C) Copyright 2000, 2007 Hewlett-Packard Development Company, L.P. | |
1da177e4 LT |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
bd4f36d6 | 7 | * the Free Software Foundation; version 2 of the License. |
1da177e4 LT |
8 | * |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
bd4f36d6 MM |
11 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * General Public License for more details. | |
1da177e4 LT |
13 | * |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
bd4f36d6 MM |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
17 | * 02111-1307, USA. | |
1da177e4 LT |
18 | * |
19 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com | |
20 | * | |
21 | */ | |
22 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/types.h> | |
26 | #include <linux/pci.h> | |
27 | #include <linux/kernel.h> | |
28 | #include <linux/slab.h> | |
405f5571 | 29 | #include <linux/smp_lock.h> |
1da177e4 LT |
30 | #include <linux/delay.h> |
31 | #include <linux/major.h> | |
32 | #include <linux/fs.h> | |
33 | #include <linux/bio.h> | |
34 | #include <linux/blkpg.h> | |
35 | #include <linux/timer.h> | |
36 | #include <linux/proc_fs.h> | |
89b6e743 | 37 | #include <linux/seq_file.h> |
7c832835 | 38 | #include <linux/init.h> |
4d761609 | 39 | #include <linux/jiffies.h> |
1da177e4 LT |
40 | #include <linux/hdreg.h> |
41 | #include <linux/spinlock.h> | |
42 | #include <linux/compat.h> | |
b368c9dd | 43 | #include <linux/mutex.h> |
1da177e4 LT |
44 | #include <asm/uaccess.h> |
45 | #include <asm/io.h> | |
46 | ||
eb0df996 | 47 | #include <linux/dma-mapping.h> |
1da177e4 LT |
48 | #include <linux/blkdev.h> |
49 | #include <linux/genhd.h> | |
50 | #include <linux/completion.h> | |
d5d3b736 | 51 | #include <scsi/scsi.h> |
03bbfee5 MMOD |
52 | #include <scsi/sg.h> |
53 | #include <scsi/scsi_ioctl.h> | |
54 | #include <linux/cdrom.h> | |
231bc2a2 | 55 | #include <linux/scatterlist.h> |
0a9279cc | 56 | #include <linux/kthread.h> |
1da177e4 LT |
57 | |
58 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) | |
841fdffd MM |
59 | #define DRIVER_NAME "HP CISS Driver (v 3.6.26)" |
60 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 26) | |
1da177e4 LT |
61 | |
62 | /* Embedded module documentation macros - see modules.h */ | |
63 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
24aac480 | 64 | MODULE_DESCRIPTION("Driver for HP Smart Array Controllers"); |
841fdffd MM |
65 | MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); |
66 | MODULE_VERSION("3.6.26"); | |
1da177e4 LT |
67 | MODULE_LICENSE("GPL"); |
68 | ||
2ec24ff1 SC |
69 | static int cciss_allow_hpsa; |
70 | module_param(cciss_allow_hpsa, int, S_IRUGO|S_IWUSR); | |
71 | MODULE_PARM_DESC(cciss_allow_hpsa, | |
72 | "Prevent cciss driver from accessing hardware known to be " | |
73 | " supported by the hpsa driver"); | |
74 | ||
1da177e4 LT |
75 | #include "cciss_cmd.h" |
76 | #include "cciss.h" | |
77 | #include <linux/cciss_ioctl.h> | |
78 | ||
79 | /* define the PCI info for the cards we can control */ | |
80 | static const struct pci_device_id cciss_pci_device_id[] = { | |
f82ccdb9 BH |
81 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
82 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, | |
83 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, | |
84 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, | |
85 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, | |
86 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, | |
87 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, | |
88 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, | |
89 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, | |
90 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, | |
91 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, | |
92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, | |
93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, | |
94 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, | |
95 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, | |
96 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, | |
97 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, | |
98 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, | |
de923916 | 99 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, |
9cff3b38 | 100 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
24aac480 MM |
101 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, |
102 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, | |
103 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, | |
104 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, | |
105 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, | |
77ca7286 MM |
106 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A}, |
107 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B}, | |
841fdffd MM |
108 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3250}, |
109 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3251}, | |
110 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3252}, | |
111 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3253}, | |
112 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3254}, | |
1da177e4 LT |
113 | {0,} |
114 | }; | |
7c832835 | 115 | |
1da177e4 LT |
116 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
117 | ||
1da177e4 LT |
118 | /* board_id = Subsystem Device ID & Vendor ID |
119 | * product = Marketing Name for the board | |
7c832835 | 120 | * access = Address of the struct of function pointers |
1da177e4 LT |
121 | */ |
122 | static struct board_type products[] = { | |
49153998 MM |
123 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
124 | {0x40800E11, "Smart Array 5i", &SA5B_access}, | |
125 | {0x40820E11, "Smart Array 532", &SA5B_access}, | |
126 | {0x40830E11, "Smart Array 5312", &SA5B_access}, | |
127 | {0x409A0E11, "Smart Array 641", &SA5_access}, | |
128 | {0x409B0E11, "Smart Array 642", &SA5_access}, | |
129 | {0x409C0E11, "Smart Array 6400", &SA5_access}, | |
130 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, | |
131 | {0x40910E11, "Smart Array 6i", &SA5_access}, | |
132 | {0x3225103C, "Smart Array P600", &SA5_access}, | |
49153998 MM |
133 | {0x3235103C, "Smart Array P400i", &SA5_access}, |
134 | {0x3211103C, "Smart Array E200i", &SA5_access}, | |
135 | {0x3212103C, "Smart Array E200", &SA5_access}, | |
136 | {0x3213103C, "Smart Array E200i", &SA5_access}, | |
137 | {0x3214103C, "Smart Array E200i", &SA5_access}, | |
138 | {0x3215103C, "Smart Array E200i", &SA5_access}, | |
139 | {0x3237103C, "Smart Array E500", &SA5_access}, | |
2ec24ff1 SC |
140 | /* controllers below this line are also supported by the hpsa driver. */ |
141 | #define HPSA_BOUNDARY 0x3223103C | |
142 | {0x3223103C, "Smart Array P800", &SA5_access}, | |
143 | {0x3234103C, "Smart Array P400", &SA5_access}, | |
49153998 MM |
144 | {0x323D103C, "Smart Array P700m", &SA5_access}, |
145 | {0x3241103C, "Smart Array P212", &SA5_access}, | |
146 | {0x3243103C, "Smart Array P410", &SA5_access}, | |
147 | {0x3245103C, "Smart Array P410i", &SA5_access}, | |
148 | {0x3247103C, "Smart Array P411", &SA5_access}, | |
149 | {0x3249103C, "Smart Array P812", &SA5_access}, | |
77ca7286 MM |
150 | {0x324A103C, "Smart Array P712m", &SA5_access}, |
151 | {0x324B103C, "Smart Array P711m", &SA5_access}, | |
841fdffd MM |
152 | {0x3250103C, "Smart Array", &SA5_access}, |
153 | {0x3251103C, "Smart Array", &SA5_access}, | |
154 | {0x3252103C, "Smart Array", &SA5_access}, | |
155 | {0x3253103C, "Smart Array", &SA5_access}, | |
156 | {0x3254103C, "Smart Array", &SA5_access}, | |
1da177e4 LT |
157 | }; |
158 | ||
d14c4ab5 | 159 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
7c832835 | 160 | #define MAX_CONFIG_WAIT 30000 |
1da177e4 LT |
161 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
162 | ||
163 | /*define how many times we will try a command because of bus resets */ | |
164 | #define MAX_CMD_RETRIES 3 | |
165 | ||
1da177e4 LT |
166 | #define MAX_CTLR 32 |
167 | ||
168 | /* Originally cciss driver only supports 8 major numbers */ | |
169 | #define MAX_CTLR_ORIG 8 | |
170 | ||
1da177e4 LT |
171 | static ctlr_info_t *hba[MAX_CTLR]; |
172 | ||
b368c9dd AP |
173 | static struct task_struct *cciss_scan_thread; |
174 | static DEFINE_MUTEX(scan_mutex); | |
175 | static LIST_HEAD(scan_q); | |
176 | ||
165125e1 | 177 | static void do_cciss_request(struct request_queue *q); |
0c2b3908 MM |
178 | static irqreturn_t do_cciss_intx(int irq, void *dev_id); |
179 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id); | |
ef7822c2 AV |
180 | static int cciss_open(struct block_device *bdev, fmode_t mode); |
181 | static int cciss_release(struct gendisk *disk, fmode_t mode); | |
182 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, | |
7c832835 | 183 | unsigned int cmd, unsigned long arg); |
a885c8c4 | 184 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 | 185 | |
1da177e4 | 186 | static int cciss_revalidate(struct gendisk *disk); |
2d11d993 | 187 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, int via_ioctl); |
a0ea8622 | 188 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
2d11d993 | 189 | int clear_all, int via_ioctl); |
1da177e4 | 190 | |
7b838bde | 191 | static void cciss_read_capacity(int ctlr, int logvol, |
00988a35 | 192 | sector_t *total_size, unsigned int *block_size); |
7b838bde | 193 | static void cciss_read_capacity_16(int ctlr, int logvol, |
00988a35 MMOD |
194 | sector_t *total_size, unsigned int *block_size); |
195 | static void cciss_geometry_inquiry(int ctlr, int logvol, | |
7b838bde | 196 | sector_t total_size, |
00988a35 | 197 | unsigned int block_size, InquiryData_struct *inq_buff, |
7c832835 | 198 | drive_info_struct *drv); |
7c832835 BH |
199 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
200 | __u32); | |
201 | static void start_io(ctlr_info_t *h); | |
7c832835 | 202 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
b57695fe | 203 | __u8 page_code, unsigned char scsi3addr[], |
204 | int cmd_type); | |
85cc61ae | 205 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
206 | int attempt_retry); | |
207 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c); | |
1da177e4 | 208 | |
d6f4965d | 209 | static int add_to_scan_list(struct ctlr_info *h); |
0a9279cc MM |
210 | static int scan_thread(void *data); |
211 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c); | |
617e1344 SC |
212 | static void cciss_hba_release(struct device *dev); |
213 | static void cciss_device_release(struct device *dev); | |
361e9b07 | 214 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index); |
9cef0d2f | 215 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index); |
29979a71 | 216 | static inline u32 next_command(ctlr_info_t *h); |
33079b21 | 217 | |
5e216153 MM |
218 | /* performant mode helper functions */ |
219 | static void calc_bucket_map(int *bucket, int num_buckets, int nsgs, | |
220 | int *bucket_map); | |
221 | static void cciss_put_controller_into_performant_mode(ctlr_info_t *h); | |
222 | ||
1da177e4 | 223 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
224 | static void cciss_procinit(int i); |
225 | #else | |
7c832835 BH |
226 | static void cciss_procinit(int i) |
227 | { | |
228 | } | |
229 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
230 | |
231 | #ifdef CONFIG_COMPAT | |
ef7822c2 AV |
232 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
233 | unsigned, unsigned long); | |
1da177e4 LT |
234 | #endif |
235 | ||
83d5cde4 | 236 | static const struct block_device_operations cciss_fops = { |
7c832835 | 237 | .owner = THIS_MODULE, |
ef7822c2 AV |
238 | .open = cciss_open, |
239 | .release = cciss_release, | |
240 | .locked_ioctl = cciss_ioctl, | |
7c832835 | 241 | .getgeo = cciss_getgeo, |
1da177e4 | 242 | #ifdef CONFIG_COMPAT |
ef7822c2 | 243 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 244 | #endif |
7c832835 | 245 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
246 | }; |
247 | ||
5e216153 MM |
248 | /* set_performant_mode: Modify the tag for cciss performant |
249 | * set bit 0 for pull model, bits 3-1 for block fetch | |
250 | * register number | |
251 | */ | |
252 | static void set_performant_mode(ctlr_info_t *h, CommandList_struct *c) | |
253 | { | |
254 | if (likely(h->transMethod == CFGTBL_Trans_Performant)) | |
255 | c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); | |
256 | } | |
257 | ||
1da177e4 LT |
258 | /* |
259 | * Enqueuing and dequeuing functions for cmdlists. | |
260 | */ | |
8a3173de | 261 | static inline void addQ(struct hlist_head *list, CommandList_struct *c) |
1da177e4 | 262 | { |
8a3173de | 263 | hlist_add_head(&c->list, list); |
1da177e4 LT |
264 | } |
265 | ||
8a3173de | 266 | static inline void removeQ(CommandList_struct *c) |
1da177e4 | 267 | { |
b59e64d0 HR |
268 | /* |
269 | * After kexec/dump some commands might still | |
270 | * be in flight, which the firmware will try | |
271 | * to complete. Resetting the firmware doesn't work | |
272 | * with old fw revisions, so we have to mark | |
273 | * them off as 'stale' to prevent the driver from | |
274 | * falling over. | |
275 | */ | |
276 | if (WARN_ON(hlist_unhashed(&c->list))) { | |
277 | c->cmd_type = CMD_MSG_STALE; | |
8a3173de | 278 | return; |
b59e64d0 | 279 | } |
8a3173de JA |
280 | |
281 | hlist_del_init(&c->list); | |
1da177e4 LT |
282 | } |
283 | ||
664a717d MM |
284 | static void enqueue_cmd_and_start_io(ctlr_info_t *h, |
285 | CommandList_struct *c) | |
286 | { | |
287 | unsigned long flags; | |
5e216153 | 288 | set_performant_mode(h, c); |
664a717d MM |
289 | spin_lock_irqsave(&h->lock, flags); |
290 | addQ(&h->reqQ, c); | |
291 | h->Qdepth++; | |
292 | start_io(h); | |
293 | spin_unlock_irqrestore(&h->lock, flags); | |
294 | } | |
295 | ||
dccc9b56 | 296 | static void cciss_free_sg_chain_blocks(SGDescriptor_struct **cmd_sg_list, |
49fc5601 SC |
297 | int nr_cmds) |
298 | { | |
299 | int i; | |
300 | ||
301 | if (!cmd_sg_list) | |
302 | return; | |
303 | for (i = 0; i < nr_cmds; i++) { | |
dccc9b56 SC |
304 | kfree(cmd_sg_list[i]); |
305 | cmd_sg_list[i] = NULL; | |
49fc5601 SC |
306 | } |
307 | kfree(cmd_sg_list); | |
308 | } | |
309 | ||
dccc9b56 SC |
310 | static SGDescriptor_struct **cciss_allocate_sg_chain_blocks( |
311 | ctlr_info_t *h, int chainsize, int nr_cmds) | |
49fc5601 SC |
312 | { |
313 | int j; | |
dccc9b56 | 314 | SGDescriptor_struct **cmd_sg_list; |
49fc5601 SC |
315 | |
316 | if (chainsize <= 0) | |
317 | return NULL; | |
318 | ||
319 | cmd_sg_list = kmalloc(sizeof(*cmd_sg_list) * nr_cmds, GFP_KERNEL); | |
320 | if (!cmd_sg_list) | |
321 | return NULL; | |
322 | ||
323 | /* Build up chain blocks for each command */ | |
324 | for (j = 0; j < nr_cmds; j++) { | |
49fc5601 | 325 | /* Need a block of chainsized s/g elements. */ |
dccc9b56 SC |
326 | cmd_sg_list[j] = kmalloc((chainsize * |
327 | sizeof(*cmd_sg_list[j])), GFP_KERNEL); | |
328 | if (!cmd_sg_list[j]) { | |
49fc5601 SC |
329 | dev_err(&h->pdev->dev, "Cannot get memory " |
330 | "for s/g chains.\n"); | |
331 | goto clean; | |
332 | } | |
333 | } | |
334 | return cmd_sg_list; | |
335 | clean: | |
336 | cciss_free_sg_chain_blocks(cmd_sg_list, nr_cmds); | |
337 | return NULL; | |
338 | } | |
339 | ||
d45033ef SC |
340 | static void cciss_unmap_sg_chain_block(ctlr_info_t *h, CommandList_struct *c) |
341 | { | |
342 | SGDescriptor_struct *chain_sg; | |
343 | u64bit temp64; | |
344 | ||
345 | if (c->Header.SGTotal <= h->max_cmd_sgentries) | |
346 | return; | |
347 | ||
348 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; | |
349 | temp64.val32.lower = chain_sg->Addr.lower; | |
350 | temp64.val32.upper = chain_sg->Addr.upper; | |
351 | pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); | |
352 | } | |
353 | ||
354 | static void cciss_map_sg_chain_block(ctlr_info_t *h, CommandList_struct *c, | |
355 | SGDescriptor_struct *chain_block, int len) | |
356 | { | |
357 | SGDescriptor_struct *chain_sg; | |
358 | u64bit temp64; | |
359 | ||
360 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; | |
361 | chain_sg->Ext = CCISS_SG_CHAIN; | |
362 | chain_sg->Len = len; | |
363 | temp64.val = pci_map_single(h->pdev, chain_block, len, | |
364 | PCI_DMA_TODEVICE); | |
365 | chain_sg->Addr.lower = temp64.val32.lower; | |
366 | chain_sg->Addr.upper = temp64.val32.upper; | |
367 | } | |
368 | ||
1da177e4 LT |
369 | #include "cciss_scsi.c" /* For SCSI tape support */ |
370 | ||
1e6f2dc1 AB |
371 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
372 | "UNKNOWN" | |
373 | }; | |
374 | #define RAID_UNKNOWN (sizeof(raid_label) / sizeof(raid_label[0])-1) | |
0f5486ec | 375 | |
1da177e4 LT |
376 | #ifdef CONFIG_PROC_FS |
377 | ||
378 | /* | |
379 | * Report information about this controller. | |
380 | */ | |
381 | #define ENG_GIG 1000000000 | |
382 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
89b6e743 | 383 | #define ENGAGE_SCSI "engage scsi" |
1da177e4 LT |
384 | |
385 | static struct proc_dir_entry *proc_cciss; | |
386 | ||
89b6e743 | 387 | static void cciss_seq_show_header(struct seq_file *seq) |
1da177e4 | 388 | { |
89b6e743 MM |
389 | ctlr_info_t *h = seq->private; |
390 | ||
391 | seq_printf(seq, "%s: HP %s Controller\n" | |
392 | "Board ID: 0x%08lx\n" | |
393 | "Firmware Version: %c%c%c%c\n" | |
394 | "IRQ: %d\n" | |
395 | "Logical drives: %d\n" | |
396 | "Current Q depth: %d\n" | |
397 | "Current # commands on controller: %d\n" | |
398 | "Max Q depth since init: %d\n" | |
399 | "Max # commands on controller since init: %d\n" | |
400 | "Max SG entries since init: %d\n", | |
401 | h->devname, | |
402 | h->product_name, | |
403 | (unsigned long)h->board_id, | |
404 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
5e216153 | 405 | h->firm_ver[3], (unsigned int)h->intr[PERF_MODE_INT], |
89b6e743 MM |
406 | h->num_luns, |
407 | h->Qdepth, h->commands_outstanding, | |
408 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
409 | ||
410 | #ifdef CONFIG_CISS_SCSI_TAPE | |
411 | cciss_seq_tape_report(seq, h->ctlr); | |
412 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
413 | } | |
1da177e4 | 414 | |
89b6e743 MM |
415 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
416 | { | |
417 | ctlr_info_t *h = seq->private; | |
418 | unsigned ctlr = h->ctlr; | |
419 | unsigned long flags; | |
1da177e4 LT |
420 | |
421 | /* prevent displaying bogus info during configuration | |
422 | * or deconfiguration of a logical volume | |
423 | */ | |
424 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
425 | if (h->busy_configuring) { | |
426 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
89b6e743 | 427 | return ERR_PTR(-EBUSY); |
1da177e4 LT |
428 | } |
429 | h->busy_configuring = 1; | |
430 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
431 | ||
89b6e743 MM |
432 | if (*pos == 0) |
433 | cciss_seq_show_header(seq); | |
434 | ||
435 | return pos; | |
436 | } | |
437 | ||
438 | static int cciss_seq_show(struct seq_file *seq, void *v) | |
439 | { | |
440 | sector_t vol_sz, vol_sz_frac; | |
441 | ctlr_info_t *h = seq->private; | |
442 | unsigned ctlr = h->ctlr; | |
443 | loff_t *pos = v; | |
9cef0d2f | 444 | drive_info_struct *drv = h->drv[*pos]; |
89b6e743 MM |
445 | |
446 | if (*pos > h->highest_lun) | |
447 | return 0; | |
448 | ||
531c2dc7 SC |
449 | if (drv == NULL) /* it's possible for h->drv[] to have holes. */ |
450 | return 0; | |
451 | ||
89b6e743 MM |
452 | if (drv->heads == 0) |
453 | return 0; | |
454 | ||
455 | vol_sz = drv->nr_blocks; | |
456 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
457 | vol_sz_frac *= 100; | |
458 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
459 | ||
fa52bec9 | 460 | if (drv->raid_level < 0 || drv->raid_level > RAID_UNKNOWN) |
89b6e743 MM |
461 | drv->raid_level = RAID_UNKNOWN; |
462 | seq_printf(seq, "cciss/c%dd%d:" | |
463 | "\t%4u.%02uGB\tRAID %s\n", | |
464 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, | |
465 | raid_label[drv->raid_level]); | |
466 | return 0; | |
467 | } | |
468 | ||
469 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
470 | { | |
471 | ctlr_info_t *h = seq->private; | |
472 | ||
473 | if (*pos > h->highest_lun) | |
474 | return NULL; | |
475 | *pos += 1; | |
476 | ||
477 | return pos; | |
478 | } | |
479 | ||
480 | static void cciss_seq_stop(struct seq_file *seq, void *v) | |
481 | { | |
482 | ctlr_info_t *h = seq->private; | |
483 | ||
484 | /* Only reset h->busy_configuring if we succeeded in setting | |
485 | * it during cciss_seq_start. */ | |
486 | if (v == ERR_PTR(-EBUSY)) | |
487 | return; | |
7c832835 | 488 | |
1da177e4 | 489 | h->busy_configuring = 0; |
1da177e4 LT |
490 | } |
491 | ||
88e9d34c | 492 | static const struct seq_operations cciss_seq_ops = { |
89b6e743 MM |
493 | .start = cciss_seq_start, |
494 | .show = cciss_seq_show, | |
495 | .next = cciss_seq_next, | |
496 | .stop = cciss_seq_stop, | |
497 | }; | |
498 | ||
499 | static int cciss_seq_open(struct inode *inode, struct file *file) | |
500 | { | |
501 | int ret = seq_open(file, &cciss_seq_ops); | |
502 | struct seq_file *seq = file->private_data; | |
503 | ||
504 | if (!ret) | |
505 | seq->private = PDE(inode)->data; | |
506 | ||
507 | return ret; | |
508 | } | |
509 | ||
510 | static ssize_t | |
511 | cciss_proc_write(struct file *file, const char __user *buf, | |
512 | size_t length, loff_t *ppos) | |
1da177e4 | 513 | { |
89b6e743 MM |
514 | int err; |
515 | char *buffer; | |
516 | ||
517 | #ifndef CONFIG_CISS_SCSI_TAPE | |
518 | return -EINVAL; | |
1da177e4 LT |
519 | #endif |
520 | ||
89b6e743 | 521 | if (!buf || length > PAGE_SIZE - 1) |
7c832835 | 522 | return -EINVAL; |
89b6e743 MM |
523 | |
524 | buffer = (char *)__get_free_page(GFP_KERNEL); | |
525 | if (!buffer) | |
526 | return -ENOMEM; | |
527 | ||
528 | err = -EFAULT; | |
529 | if (copy_from_user(buffer, buf, length)) | |
530 | goto out; | |
531 | buffer[length] = '\0'; | |
532 | ||
533 | #ifdef CONFIG_CISS_SCSI_TAPE | |
534 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { | |
535 | struct seq_file *seq = file->private_data; | |
536 | ctlr_info_t *h = seq->private; | |
89b6e743 | 537 | |
8721c81f SC |
538 | err = cciss_engage_scsi(h->ctlr); |
539 | if (err == 0) | |
89b6e743 MM |
540 | err = length; |
541 | } else | |
542 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
543 | err = -EINVAL; | |
7c832835 BH |
544 | /* might be nice to have "disengage" too, but it's not |
545 | safely possible. (only 1 module use count, lock issues.) */ | |
89b6e743 MM |
546 | |
547 | out: | |
548 | free_page((unsigned long)buffer); | |
549 | return err; | |
1da177e4 LT |
550 | } |
551 | ||
828c0950 | 552 | static const struct file_operations cciss_proc_fops = { |
89b6e743 MM |
553 | .owner = THIS_MODULE, |
554 | .open = cciss_seq_open, | |
555 | .read = seq_read, | |
556 | .llseek = seq_lseek, | |
557 | .release = seq_release, | |
558 | .write = cciss_proc_write, | |
559 | }; | |
560 | ||
1da177e4 LT |
561 | static void __devinit cciss_procinit(int i) |
562 | { | |
563 | struct proc_dir_entry *pde; | |
564 | ||
89b6e743 | 565 | if (proc_cciss == NULL) |
928b4d8c | 566 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
89b6e743 MM |
567 | if (!proc_cciss) |
568 | return; | |
3dfcf9c4 | 569 | pde = proc_create_data(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
89b6e743 | 570 | S_IROTH, proc_cciss, |
3dfcf9c4 | 571 | &cciss_proc_fops, hba[i]); |
1da177e4 | 572 | } |
7c832835 | 573 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 574 | |
7fe06326 AP |
575 | #define MAX_PRODUCT_NAME_LEN 19 |
576 | ||
577 | #define to_hba(n) container_of(n, struct ctlr_info, dev) | |
578 | #define to_drv(n) container_of(n, drive_info_struct, dev) | |
579 | ||
d6f4965d AP |
580 | static ssize_t host_store_rescan(struct device *dev, |
581 | struct device_attribute *attr, | |
582 | const char *buf, size_t count) | |
583 | { | |
584 | struct ctlr_info *h = to_hba(dev); | |
585 | ||
586 | add_to_scan_list(h); | |
587 | wake_up_process(cciss_scan_thread); | |
588 | wait_for_completion_interruptible(&h->scan_wait); | |
589 | ||
590 | return count; | |
591 | } | |
8ba95c69 | 592 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); |
7fe06326 AP |
593 | |
594 | static ssize_t dev_show_unique_id(struct device *dev, | |
595 | struct device_attribute *attr, | |
596 | char *buf) | |
597 | { | |
598 | drive_info_struct *drv = to_drv(dev); | |
599 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
600 | __u8 sn[16]; | |
601 | unsigned long flags; | |
602 | int ret = 0; | |
603 | ||
604 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
605 | if (h->busy_configuring) | |
606 | ret = -EBUSY; | |
607 | else | |
608 | memcpy(sn, drv->serial_no, sizeof(sn)); | |
609 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
610 | ||
611 | if (ret) | |
612 | return ret; | |
613 | else | |
614 | return snprintf(buf, 16 * 2 + 2, | |
615 | "%02X%02X%02X%02X%02X%02X%02X%02X" | |
616 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", | |
617 | sn[0], sn[1], sn[2], sn[3], | |
618 | sn[4], sn[5], sn[6], sn[7], | |
619 | sn[8], sn[9], sn[10], sn[11], | |
620 | sn[12], sn[13], sn[14], sn[15]); | |
621 | } | |
8ba95c69 | 622 | static DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); |
7fe06326 AP |
623 | |
624 | static ssize_t dev_show_vendor(struct device *dev, | |
625 | struct device_attribute *attr, | |
626 | char *buf) | |
627 | { | |
628 | drive_info_struct *drv = to_drv(dev); | |
629 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
630 | char vendor[VENDOR_LEN + 1]; | |
631 | unsigned long flags; | |
632 | int ret = 0; | |
633 | ||
634 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
635 | if (h->busy_configuring) | |
636 | ret = -EBUSY; | |
637 | else | |
638 | memcpy(vendor, drv->vendor, VENDOR_LEN + 1); | |
639 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
640 | ||
641 | if (ret) | |
642 | return ret; | |
643 | else | |
644 | return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); | |
645 | } | |
8ba95c69 | 646 | static DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); |
7fe06326 AP |
647 | |
648 | static ssize_t dev_show_model(struct device *dev, | |
649 | struct device_attribute *attr, | |
650 | char *buf) | |
651 | { | |
652 | drive_info_struct *drv = to_drv(dev); | |
653 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
654 | char model[MODEL_LEN + 1]; | |
655 | unsigned long flags; | |
656 | int ret = 0; | |
657 | ||
658 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
659 | if (h->busy_configuring) | |
660 | ret = -EBUSY; | |
661 | else | |
662 | memcpy(model, drv->model, MODEL_LEN + 1); | |
663 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
664 | ||
665 | if (ret) | |
666 | return ret; | |
667 | else | |
668 | return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); | |
669 | } | |
8ba95c69 | 670 | static DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); |
7fe06326 AP |
671 | |
672 | static ssize_t dev_show_rev(struct device *dev, | |
673 | struct device_attribute *attr, | |
674 | char *buf) | |
675 | { | |
676 | drive_info_struct *drv = to_drv(dev); | |
677 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
678 | char rev[REV_LEN + 1]; | |
679 | unsigned long flags; | |
680 | int ret = 0; | |
681 | ||
682 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
683 | if (h->busy_configuring) | |
684 | ret = -EBUSY; | |
685 | else | |
686 | memcpy(rev, drv->rev, REV_LEN + 1); | |
687 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
688 | ||
689 | if (ret) | |
690 | return ret; | |
691 | else | |
692 | return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); | |
693 | } | |
8ba95c69 | 694 | static DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); |
7fe06326 | 695 | |
ce84a8ae SC |
696 | static ssize_t cciss_show_lunid(struct device *dev, |
697 | struct device_attribute *attr, char *buf) | |
698 | { | |
9cef0d2f SC |
699 | drive_info_struct *drv = to_drv(dev); |
700 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
ce84a8ae SC |
701 | unsigned long flags; |
702 | unsigned char lunid[8]; | |
703 | ||
704 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
705 | if (h->busy_configuring) { | |
706 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
707 | return -EBUSY; | |
708 | } | |
709 | if (!drv->heads) { | |
710 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
711 | return -ENOTTY; | |
712 | } | |
713 | memcpy(lunid, drv->LunID, sizeof(lunid)); | |
714 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
715 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
716 | lunid[0], lunid[1], lunid[2], lunid[3], | |
717 | lunid[4], lunid[5], lunid[6], lunid[7]); | |
718 | } | |
8ba95c69 | 719 | static DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL); |
ce84a8ae | 720 | |
3ff1111d SC |
721 | static ssize_t cciss_show_raid_level(struct device *dev, |
722 | struct device_attribute *attr, char *buf) | |
723 | { | |
9cef0d2f SC |
724 | drive_info_struct *drv = to_drv(dev); |
725 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
3ff1111d SC |
726 | int raid; |
727 | unsigned long flags; | |
728 | ||
729 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
730 | if (h->busy_configuring) { | |
731 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
732 | return -EBUSY; | |
733 | } | |
734 | raid = drv->raid_level; | |
735 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
736 | if (raid < 0 || raid > RAID_UNKNOWN) | |
737 | raid = RAID_UNKNOWN; | |
738 | ||
739 | return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n", | |
740 | raid_label[raid]); | |
741 | } | |
8ba95c69 | 742 | static DEVICE_ATTR(raid_level, S_IRUGO, cciss_show_raid_level, NULL); |
3ff1111d | 743 | |
e272afec SC |
744 | static ssize_t cciss_show_usage_count(struct device *dev, |
745 | struct device_attribute *attr, char *buf) | |
746 | { | |
9cef0d2f SC |
747 | drive_info_struct *drv = to_drv(dev); |
748 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
e272afec SC |
749 | unsigned long flags; |
750 | int count; | |
751 | ||
752 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
753 | if (h->busy_configuring) { | |
754 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
755 | return -EBUSY; | |
756 | } | |
757 | count = drv->usage_count; | |
758 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
759 | return snprintf(buf, 20, "%d\n", count); | |
760 | } | |
8ba95c69 | 761 | static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL); |
e272afec | 762 | |
d6f4965d AP |
763 | static struct attribute *cciss_host_attrs[] = { |
764 | &dev_attr_rescan.attr, | |
765 | NULL | |
766 | }; | |
767 | ||
768 | static struct attribute_group cciss_host_attr_group = { | |
769 | .attrs = cciss_host_attrs, | |
770 | }; | |
771 | ||
9f792d9f | 772 | static const struct attribute_group *cciss_host_attr_groups[] = { |
d6f4965d AP |
773 | &cciss_host_attr_group, |
774 | NULL | |
775 | }; | |
776 | ||
777 | static struct device_type cciss_host_type = { | |
778 | .name = "cciss_host", | |
779 | .groups = cciss_host_attr_groups, | |
617e1344 | 780 | .release = cciss_hba_release, |
d6f4965d AP |
781 | }; |
782 | ||
7fe06326 AP |
783 | static struct attribute *cciss_dev_attrs[] = { |
784 | &dev_attr_unique_id.attr, | |
785 | &dev_attr_model.attr, | |
786 | &dev_attr_vendor.attr, | |
787 | &dev_attr_rev.attr, | |
ce84a8ae | 788 | &dev_attr_lunid.attr, |
3ff1111d | 789 | &dev_attr_raid_level.attr, |
e272afec | 790 | &dev_attr_usage_count.attr, |
7fe06326 AP |
791 | NULL |
792 | }; | |
793 | ||
794 | static struct attribute_group cciss_dev_attr_group = { | |
795 | .attrs = cciss_dev_attrs, | |
796 | }; | |
797 | ||
a4dbd674 | 798 | static const struct attribute_group *cciss_dev_attr_groups[] = { |
7fe06326 AP |
799 | &cciss_dev_attr_group, |
800 | NULL | |
801 | }; | |
802 | ||
803 | static struct device_type cciss_dev_type = { | |
804 | .name = "cciss_device", | |
805 | .groups = cciss_dev_attr_groups, | |
617e1344 | 806 | .release = cciss_device_release, |
7fe06326 AP |
807 | }; |
808 | ||
809 | static struct bus_type cciss_bus_type = { | |
810 | .name = "cciss", | |
811 | }; | |
812 | ||
617e1344 SC |
813 | /* |
814 | * cciss_hba_release is called when the reference count | |
815 | * of h->dev goes to zero. | |
816 | */ | |
817 | static void cciss_hba_release(struct device *dev) | |
818 | { | |
819 | /* | |
820 | * nothing to do, but need this to avoid a warning | |
821 | * about not having a release handler from lib/kref.c. | |
822 | */ | |
823 | } | |
7fe06326 AP |
824 | |
825 | /* | |
826 | * Initialize sysfs entry for each controller. This sets up and registers | |
827 | * the 'cciss#' directory for each individual controller under | |
828 | * /sys/bus/pci/devices/<dev>/. | |
829 | */ | |
830 | static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) | |
831 | { | |
832 | device_initialize(&h->dev); | |
833 | h->dev.type = &cciss_host_type; | |
834 | h->dev.bus = &cciss_bus_type; | |
835 | dev_set_name(&h->dev, "%s", h->devname); | |
836 | h->dev.parent = &h->pdev->dev; | |
837 | ||
838 | return device_add(&h->dev); | |
839 | } | |
840 | ||
841 | /* | |
842 | * Remove sysfs entries for an hba. | |
843 | */ | |
844 | static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) | |
845 | { | |
846 | device_del(&h->dev); | |
617e1344 SC |
847 | put_device(&h->dev); /* final put. */ |
848 | } | |
849 | ||
850 | /* cciss_device_release is called when the reference count | |
9cef0d2f | 851 | * of h->drv[x]dev goes to zero. |
617e1344 SC |
852 | */ |
853 | static void cciss_device_release(struct device *dev) | |
854 | { | |
9cef0d2f SC |
855 | drive_info_struct *drv = to_drv(dev); |
856 | kfree(drv); | |
7fe06326 AP |
857 | } |
858 | ||
859 | /* | |
860 | * Initialize sysfs for each logical drive. This sets up and registers | |
861 | * the 'c#d#' directory for each individual logical drive under | |
862 | * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from | |
863 | * /sys/block/cciss!c#d# to this entry. | |
864 | */ | |
617e1344 | 865 | static long cciss_create_ld_sysfs_entry(struct ctlr_info *h, |
7fe06326 AP |
866 | int drv_index) |
867 | { | |
617e1344 SC |
868 | struct device *dev; |
869 | ||
9cef0d2f | 870 | if (h->drv[drv_index]->device_initialized) |
8ce51966 SC |
871 | return 0; |
872 | ||
9cef0d2f | 873 | dev = &h->drv[drv_index]->dev; |
617e1344 SC |
874 | device_initialize(dev); |
875 | dev->type = &cciss_dev_type; | |
876 | dev->bus = &cciss_bus_type; | |
877 | dev_set_name(dev, "c%dd%d", h->ctlr, drv_index); | |
878 | dev->parent = &h->dev; | |
9cef0d2f | 879 | h->drv[drv_index]->device_initialized = 1; |
617e1344 | 880 | return device_add(dev); |
7fe06326 AP |
881 | } |
882 | ||
883 | /* | |
884 | * Remove sysfs entries for a logical drive. | |
885 | */ | |
8ce51966 SC |
886 | static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index, |
887 | int ctlr_exiting) | |
7fe06326 | 888 | { |
9cef0d2f | 889 | struct device *dev = &h->drv[drv_index]->dev; |
8ce51966 SC |
890 | |
891 | /* special case for c*d0, we only destroy it on controller exit */ | |
892 | if (drv_index == 0 && !ctlr_exiting) | |
893 | return; | |
894 | ||
617e1344 SC |
895 | device_del(dev); |
896 | put_device(dev); /* the "final" put. */ | |
9cef0d2f | 897 | h->drv[drv_index] = NULL; |
7fe06326 AP |
898 | } |
899 | ||
7c832835 BH |
900 | /* |
901 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 902 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
903 | * which ones are free or in use. For operations that can wait for kmalloc |
904 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
905 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
906 | */ | |
907 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
908 | { |
909 | CommandList_struct *c; | |
7c832835 | 910 | int i; |
1da177e4 LT |
911 | u64bit temp64; |
912 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
913 | ||
7c832835 BH |
914 | if (!get_from_pool) { |
915 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
916 | sizeof(CommandList_struct), &cmd_dma_handle); | |
917 | if (c == NULL) | |
918 | return NULL; | |
1da177e4 LT |
919 | memset(c, 0, sizeof(CommandList_struct)); |
920 | ||
33079b21 MM |
921 | c->cmdindex = -1; |
922 | ||
7c832835 BH |
923 | c->err_info = (ErrorInfo_struct *) |
924 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
925 | &err_dma_handle); | |
926 | ||
927 | if (c->err_info == NULL) { | |
928 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
929 | sizeof(CommandList_struct), c, cmd_dma_handle); |
930 | return NULL; | |
931 | } | |
932 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
933 | } else { /* get it out of the controllers pool */ |
934 | ||
935 | do { | |
f880632f MM |
936 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
937 | if (i == h->nr_cmds) | |
7c832835 BH |
938 | return NULL; |
939 | } while (test_and_set_bit | |
940 | (i & (BITS_PER_LONG - 1), | |
941 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
942 | #ifdef CCISS_DEBUG |
943 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
944 | #endif | |
7c832835 | 945 | c = h->cmd_pool + i; |
1da177e4 | 946 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
947 | cmd_dma_handle = h->cmd_pool_dhandle |
948 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
949 | c->err_info = h->errinfo_pool + i; |
950 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
951 | err_dma_handle = h->errinfo_pool_dhandle |
952 | + i * sizeof(ErrorInfo_struct); | |
953 | h->nr_allocs++; | |
33079b21 MM |
954 | |
955 | c->cmdindex = i; | |
7c832835 | 956 | } |
1da177e4 | 957 | |
8a3173de | 958 | INIT_HLIST_NODE(&c->list); |
1da177e4 | 959 | c->busaddr = (__u32) cmd_dma_handle; |
7c832835 | 960 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
961 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
962 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
963 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 964 | |
7c832835 BH |
965 | c->ctlr = h->ctlr; |
966 | return c; | |
1da177e4 LT |
967 | } |
968 | ||
7c832835 BH |
969 | /* |
970 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
971 | */ |
972 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
973 | { | |
974 | int i; | |
975 | u64bit temp64; | |
976 | ||
7c832835 | 977 | if (!got_from_pool) { |
1da177e4 LT |
978 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
979 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
980 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
981 | c->err_info, (dma_addr_t) temp64.val); | |
982 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
983 | c, (dma_addr_t) c->busaddr); | |
984 | } else { | |
1da177e4 | 985 | i = c - h->cmd_pool; |
7c832835 BH |
986 | clear_bit(i & (BITS_PER_LONG - 1), |
987 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
988 | h->nr_frees++; | |
989 | } | |
1da177e4 LT |
990 | } |
991 | ||
992 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
993 | { | |
7c832835 | 994 | return disk->queue->queuedata; |
1da177e4 LT |
995 | } |
996 | ||
997 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
998 | { | |
999 | return disk->private_data; | |
1000 | } | |
1001 | ||
1002 | /* | |
1003 | * Open. Make sure the device is really there. | |
1004 | */ | |
ef7822c2 | 1005 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
1da177e4 | 1006 | { |
ef7822c2 AV |
1007 | ctlr_info_t *host = get_host(bdev->bd_disk); |
1008 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1da177e4 LT |
1009 | |
1010 | #ifdef CCISS_DEBUG | |
ef7822c2 | 1011 | printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name); |
7c832835 | 1012 | #endif /* CCISS_DEBUG */ |
1da177e4 | 1013 | |
2e043986 | 1014 | if (drv->busy_configuring) |
ddd47442 | 1015 | return -EBUSY; |
1da177e4 LT |
1016 | /* |
1017 | * Root is allowed to open raw volume zero even if it's not configured | |
1018 | * so array config can still work. Root is also allowed to open any | |
1019 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
1020 | * disk information. I don't think I really like this | |
1021 | * but I'm already using way to many device nodes to claim another one | |
1022 | * for "raw controller". | |
1023 | */ | |
7a06f789 | 1024 | if (drv->heads == 0) { |
ef7822c2 | 1025 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
1da177e4 | 1026 | /* if not node 0 make sure it is a partition = 0 */ |
ef7822c2 | 1027 | if (MINOR(bdev->bd_dev) & 0x0f) { |
7c832835 | 1028 | return -ENXIO; |
1da177e4 | 1029 | /* if it is, make sure we have a LUN ID */ |
39ccf9a6 SC |
1030 | } else if (memcmp(drv->LunID, CTLR_LUNID, |
1031 | sizeof(drv->LunID))) { | |
1da177e4 LT |
1032 | return -ENXIO; |
1033 | } | |
1034 | } | |
1035 | if (!capable(CAP_SYS_ADMIN)) | |
1036 | return -EPERM; | |
1037 | } | |
1038 | drv->usage_count++; | |
1039 | host->usage_count++; | |
1040 | return 0; | |
1041 | } | |
7c832835 | 1042 | |
1da177e4 LT |
1043 | /* |
1044 | * Close. Sync first. | |
1045 | */ | |
ef7822c2 | 1046 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
1da177e4 | 1047 | { |
ef7822c2 AV |
1048 | ctlr_info_t *host = get_host(disk); |
1049 | drive_info_struct *drv = get_drv(disk); | |
1da177e4 LT |
1050 | |
1051 | #ifdef CCISS_DEBUG | |
ef7822c2 | 1052 | printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name); |
7c832835 | 1053 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
1054 | |
1055 | drv->usage_count--; | |
1056 | host->usage_count--; | |
1057 | return 0; | |
1058 | } | |
1059 | ||
1060 | #ifdef CONFIG_COMPAT | |
1061 | ||
ef7822c2 AV |
1062 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
1063 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1064 | { |
1065 | int ret; | |
1066 | lock_kernel(); | |
ef7822c2 | 1067 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
1068 | unlock_kernel(); |
1069 | return ret; | |
1070 | } | |
1071 | ||
ef7822c2 AV |
1072 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
1073 | unsigned cmd, unsigned long arg); | |
1074 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, | |
1075 | unsigned cmd, unsigned long arg); | |
1da177e4 | 1076 | |
ef7822c2 AV |
1077 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
1078 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1079 | { |
1080 | switch (cmd) { | |
1081 | case CCISS_GETPCIINFO: | |
1082 | case CCISS_GETINTINFO: | |
1083 | case CCISS_SETINTINFO: | |
1084 | case CCISS_GETNODENAME: | |
1085 | case CCISS_SETNODENAME: | |
1086 | case CCISS_GETHEARTBEAT: | |
1087 | case CCISS_GETBUSTYPES: | |
1088 | case CCISS_GETFIRMVER: | |
1089 | case CCISS_GETDRIVVER: | |
1090 | case CCISS_REVALIDVOLS: | |
1091 | case CCISS_DEREGDISK: | |
1092 | case CCISS_REGNEWDISK: | |
1093 | case CCISS_REGNEWD: | |
1094 | case CCISS_RESCANDISK: | |
1095 | case CCISS_GETLUNINFO: | |
ef7822c2 | 1096 | return do_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
1097 | |
1098 | case CCISS_PASSTHRU32: | |
ef7822c2 | 1099 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
1da177e4 | 1100 | case CCISS_BIG_PASSTHRU32: |
ef7822c2 | 1101 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
1da177e4 LT |
1102 | |
1103 | default: | |
1104 | return -ENOIOCTLCMD; | |
1105 | } | |
1106 | } | |
1107 | ||
ef7822c2 AV |
1108 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
1109 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1110 | { |
1111 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 1112 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
1113 | IOCTL_Command_struct arg64; |
1114 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
1115 | int err; | |
1116 | u32 cp; | |
1117 | ||
1118 | err = 0; | |
7c832835 BH |
1119 | err |= |
1120 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1121 | sizeof(arg64.LUN_info)); | |
1122 | err |= | |
1123 | copy_from_user(&arg64.Request, &arg32->Request, | |
1124 | sizeof(arg64.Request)); | |
1125 | err |= | |
1126 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1127 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1128 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1129 | err |= get_user(cp, &arg32->buf); | |
1130 | arg64.buf = compat_ptr(cp); | |
1131 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1132 | ||
1133 | if (err) | |
1134 | return -EFAULT; | |
1135 | ||
ef7822c2 | 1136 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1137 | if (err) |
1138 | return err; | |
7c832835 BH |
1139 | err |= |
1140 | copy_in_user(&arg32->error_info, &p->error_info, | |
1141 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1142 | if (err) |
1143 | return -EFAULT; | |
1144 | return err; | |
1145 | } | |
1146 | ||
ef7822c2 AV |
1147 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
1148 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1149 | { |
1150 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 1151 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 1152 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
1153 | BIG_IOCTL_Command_struct __user *p = |
1154 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
1155 | int err; |
1156 | u32 cp; | |
1157 | ||
1158 | err = 0; | |
7c832835 BH |
1159 | err |= |
1160 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1161 | sizeof(arg64.LUN_info)); | |
1162 | err |= | |
1163 | copy_from_user(&arg64.Request, &arg32->Request, | |
1164 | sizeof(arg64.Request)); | |
1165 | err |= | |
1166 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1167 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1168 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1169 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
1170 | err |= get_user(cp, &arg32->buf); | |
1171 | arg64.buf = compat_ptr(cp); | |
1172 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1173 | ||
1174 | if (err) | |
7c832835 | 1175 | return -EFAULT; |
1da177e4 | 1176 | |
ef7822c2 | 1177 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1178 | if (err) |
1179 | return err; | |
7c832835 BH |
1180 | err |= |
1181 | copy_in_user(&arg32->error_info, &p->error_info, | |
1182 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1183 | if (err) |
1184 | return -EFAULT; | |
1185 | return err; | |
1186 | } | |
1187 | #endif | |
a885c8c4 CH |
1188 | |
1189 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
1190 | { | |
1191 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1192 | ||
1193 | if (!drv->cylinders) | |
1194 | return -ENXIO; | |
1195 | ||
1196 | geo->heads = drv->heads; | |
1197 | geo->sectors = drv->sectors; | |
1198 | geo->cylinders = drv->cylinders; | |
1199 | return 0; | |
1200 | } | |
1201 | ||
0a9279cc MM |
1202 | static void check_ioctl_unit_attention(ctlr_info_t *host, CommandList_struct *c) |
1203 | { | |
1204 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
1205 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) | |
1206 | (void)check_for_unit_attention(host, c); | |
1207 | } | |
1da177e4 | 1208 | /* |
7c832835 | 1209 | * ioctl |
1da177e4 | 1210 | */ |
ef7822c2 | 1211 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
7c832835 | 1212 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1213 | { |
1da177e4 LT |
1214 | struct gendisk *disk = bdev->bd_disk; |
1215 | ctlr_info_t *host = get_host(disk); | |
1216 | drive_info_struct *drv = get_drv(disk); | |
1217 | int ctlr = host->ctlr; | |
1218 | void __user *argp = (void __user *)arg; | |
1219 | ||
1220 | #ifdef CCISS_DEBUG | |
1221 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
1222 | #endif /* CCISS_DEBUG */ |
1223 | ||
1224 | switch (cmd) { | |
1da177e4 | 1225 | case CCISS_GETPCIINFO: |
7c832835 BH |
1226 | { |
1227 | cciss_pci_info_struct pciinfo; | |
1228 | ||
1229 | if (!arg) | |
1230 | return -EINVAL; | |
1231 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
1232 | pciinfo.bus = host->pdev->bus->number; | |
1233 | pciinfo.dev_fn = host->pdev->devfn; | |
1234 | pciinfo.board_id = host->board_id; | |
1235 | if (copy_to_user | |
1236 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
1237 | return -EFAULT; | |
1238 | return 0; | |
1239 | } | |
1da177e4 | 1240 | case CCISS_GETINTINFO: |
7c832835 BH |
1241 | { |
1242 | cciss_coalint_struct intinfo; | |
1243 | if (!arg) | |
1244 | return -EINVAL; | |
1245 | intinfo.delay = | |
1246 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
1247 | intinfo.count = | |
1248 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
1249 | if (copy_to_user | |
1250 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
1251 | return -EFAULT; | |
1252 | return 0; | |
1253 | } | |
1da177e4 | 1254 | case CCISS_SETINTINFO: |
1da177e4 | 1255 | { |
7c832835 BH |
1256 | cciss_coalint_struct intinfo; |
1257 | unsigned long flags; | |
1258 | int i; | |
1259 | ||
1260 | if (!arg) | |
1261 | return -EINVAL; | |
1262 | if (!capable(CAP_SYS_ADMIN)) | |
1263 | return -EPERM; | |
1264 | if (copy_from_user | |
1265 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
1266 | return -EFAULT; | |
1267 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
1268 | { | |
1269 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
1270 | return -EINVAL; | |
1271 | } | |
1272 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1273 | /* Update the field, and then ring the doorbell */ | |
1274 | writel(intinfo.delay, | |
1275 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
1276 | writel(intinfo.count, | |
1277 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
1278 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
1279 | ||
1280 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1281 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
1282 | & CFGTBL_ChangeReq)) | |
1283 | break; | |
1284 | /* delay and try again */ | |
1285 | udelay(1000); | |
1286 | } | |
1287 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1288 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1289 | return -EAGAIN; | |
1290 | return 0; | |
1da177e4 | 1291 | } |
1da177e4 | 1292 | case CCISS_GETNODENAME: |
7c832835 BH |
1293 | { |
1294 | NodeName_type NodeName; | |
1295 | int i; | |
1296 | ||
1297 | if (!arg) | |
1298 | return -EINVAL; | |
1299 | for (i = 0; i < 16; i++) | |
1300 | NodeName[i] = | |
1301 | readb(&host->cfgtable->ServerName[i]); | |
1302 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
1303 | return -EFAULT; | |
1304 | return 0; | |
1305 | } | |
1da177e4 | 1306 | case CCISS_SETNODENAME: |
7c832835 BH |
1307 | { |
1308 | NodeName_type NodeName; | |
1309 | unsigned long flags; | |
1310 | int i; | |
1311 | ||
1312 | if (!arg) | |
1313 | return -EINVAL; | |
1314 | if (!capable(CAP_SYS_ADMIN)) | |
1315 | return -EPERM; | |
1316 | ||
1317 | if (copy_from_user | |
1318 | (NodeName, argp, sizeof(NodeName_type))) | |
1319 | return -EFAULT; | |
1320 | ||
1321 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1322 | ||
1323 | /* Update the field, and then ring the doorbell */ | |
1324 | for (i = 0; i < 16; i++) | |
1325 | writeb(NodeName[i], | |
1326 | &host->cfgtable->ServerName[i]); | |
1327 | ||
1328 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
1329 | ||
1330 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1331 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
1332 | & CFGTBL_ChangeReq)) | |
1333 | break; | |
1334 | /* delay and try again */ | |
1335 | udelay(1000); | |
1336 | } | |
1337 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1338 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1339 | return -EAGAIN; | |
1340 | return 0; | |
1341 | } | |
1da177e4 LT |
1342 | |
1343 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
1344 | { |
1345 | Heartbeat_type heartbeat; | |
1346 | ||
1347 | if (!arg) | |
1348 | return -EINVAL; | |
1349 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
1350 | if (copy_to_user | |
1351 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
1352 | return -EFAULT; | |
1353 | return 0; | |
1354 | } | |
1da177e4 | 1355 | case CCISS_GETBUSTYPES: |
7c832835 BH |
1356 | { |
1357 | BusTypes_type BusTypes; | |
1358 | ||
1359 | if (!arg) | |
1360 | return -EINVAL; | |
1361 | BusTypes = readl(&host->cfgtable->BusTypes); | |
1362 | if (copy_to_user | |
1363 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
1364 | return -EFAULT; | |
1365 | return 0; | |
1366 | } | |
1da177e4 | 1367 | case CCISS_GETFIRMVER: |
7c832835 BH |
1368 | { |
1369 | FirmwareVer_type firmware; | |
1da177e4 | 1370 | |
7c832835 BH |
1371 | if (!arg) |
1372 | return -EINVAL; | |
1373 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 1374 | |
7c832835 BH |
1375 | if (copy_to_user |
1376 | (argp, firmware, sizeof(FirmwareVer_type))) | |
1377 | return -EFAULT; | |
1378 | return 0; | |
1379 | } | |
1380 | case CCISS_GETDRIVVER: | |
1381 | { | |
1382 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 1383 | |
7c832835 BH |
1384 | if (!arg) |
1385 | return -EINVAL; | |
1da177e4 | 1386 | |
7c832835 BH |
1387 | if (copy_to_user |
1388 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
1389 | return -EFAULT; | |
1390 | return 0; | |
1391 | } | |
1da177e4 | 1392 | |
6ae5ce8e MM |
1393 | case CCISS_DEREGDISK: |
1394 | case CCISS_REGNEWD: | |
1da177e4 | 1395 | case CCISS_REVALIDVOLS: |
2d11d993 | 1396 | return rebuild_lun_table(host, 0, 1); |
7c832835 BH |
1397 | |
1398 | case CCISS_GETLUNINFO:{ | |
1399 | LogvolInfo_struct luninfo; | |
1400 | ||
39ccf9a6 SC |
1401 | memcpy(&luninfo.LunID, drv->LunID, |
1402 | sizeof(luninfo.LunID)); | |
7c832835 BH |
1403 | luninfo.num_opens = drv->usage_count; |
1404 | luninfo.num_parts = 0; | |
1405 | if (copy_to_user(argp, &luninfo, | |
1406 | sizeof(LogvolInfo_struct))) | |
1407 | return -EFAULT; | |
1408 | return 0; | |
1409 | } | |
1da177e4 | 1410 | case CCISS_PASSTHRU: |
1da177e4 | 1411 | { |
7c832835 BH |
1412 | IOCTL_Command_struct iocommand; |
1413 | CommandList_struct *c; | |
1414 | char *buff = NULL; | |
1415 | u64bit temp64; | |
6e9a4738 | 1416 | DECLARE_COMPLETION_ONSTACK(wait); |
1da177e4 | 1417 | |
7c832835 BH |
1418 | if (!arg) |
1419 | return -EINVAL; | |
1da177e4 | 1420 | |
7c832835 BH |
1421 | if (!capable(CAP_SYS_RAWIO)) |
1422 | return -EPERM; | |
1da177e4 | 1423 | |
7c832835 BH |
1424 | if (copy_from_user |
1425 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
1426 | return -EFAULT; | |
1427 | if ((iocommand.buf_size < 1) && | |
1428 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
1429 | return -EINVAL; | |
1430 | } | |
1431 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
1432 | /* Check kmalloc limits */ | |
1433 | if (iocommand.buf_size > 128000) | |
1434 | return -EINVAL; | |
1435 | #endif | |
1436 | if (iocommand.buf_size > 0) { | |
1437 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
1438 | if (buff == NULL) | |
1439 | return -EFAULT; | |
1440 | } | |
1441 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
1442 | /* Copy the data into the buffer we created */ | |
1443 | if (copy_from_user | |
1444 | (buff, iocommand.buf, iocommand.buf_size)) { | |
1445 | kfree(buff); | |
1446 | return -EFAULT; | |
1447 | } | |
1448 | } else { | |
1449 | memset(buff, 0, iocommand.buf_size); | |
1450 | } | |
1451 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1452 | kfree(buff); | |
1453 | return -ENOMEM; | |
1454 | } | |
b028461d | 1455 | /* Fill in the command type */ |
7c832835 | 1456 | c->cmd_type = CMD_IOCTL_PEND; |
b028461d | 1457 | /* Fill in Command Header */ |
1458 | c->Header.ReplyQueue = 0; /* unused in simple mode */ | |
1459 | if (iocommand.buf_size > 0) /* buffer to fill */ | |
7c832835 BH |
1460 | { |
1461 | c->Header.SGList = 1; | |
1462 | c->Header.SGTotal = 1; | |
b028461d | 1463 | } else /* no buffers to fill */ |
7c832835 BH |
1464 | { |
1465 | c->Header.SGList = 0; | |
1466 | c->Header.SGTotal = 0; | |
1467 | } | |
1468 | c->Header.LUN = iocommand.LUN_info; | |
b028461d | 1469 | /* use the kernel address the cmd block for tag */ |
1470 | c->Header.Tag.lower = c->busaddr; | |
1da177e4 | 1471 | |
b028461d | 1472 | /* Fill in Request block */ |
7c832835 | 1473 | c->Request = iocommand.Request; |
1da177e4 | 1474 | |
b028461d | 1475 | /* Fill in the scatter gather information */ |
7c832835 BH |
1476 | if (iocommand.buf_size > 0) { |
1477 | temp64.val = pci_map_single(host->pdev, buff, | |
1478 | iocommand.buf_size, | |
1479 | PCI_DMA_BIDIRECTIONAL); | |
1480 | c->SG[0].Addr.lower = temp64.val32.lower; | |
1481 | c->SG[0].Addr.upper = temp64.val32.upper; | |
1482 | c->SG[0].Len = iocommand.buf_size; | |
b028461d | 1483 | c->SG[0].Ext = 0; /* we are not chaining */ |
7c832835 BH |
1484 | } |
1485 | c->waiting = &wait; | |
1486 | ||
664a717d | 1487 | enqueue_cmd_and_start_io(host, c); |
7c832835 BH |
1488 | wait_for_completion(&wait); |
1489 | ||
1490 | /* unlock the buffers from DMA */ | |
1491 | temp64.val32.lower = c->SG[0].Addr.lower; | |
1492 | temp64.val32.upper = c->SG[0].Addr.upper; | |
1493 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
1494 | iocommand.buf_size, | |
1495 | PCI_DMA_BIDIRECTIONAL); | |
1496 | ||
0a9279cc MM |
1497 | check_ioctl_unit_attention(host, c); |
1498 | ||
7c832835 BH |
1499 | /* Copy the error information out */ |
1500 | iocommand.error_info = *(c->err_info); | |
1501 | if (copy_to_user | |
1502 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
1503 | kfree(buff); | |
1da177e4 LT |
1504 | cmd_free(host, c, 0); |
1505 | return -EFAULT; | |
1506 | } | |
7c832835 BH |
1507 | |
1508 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
1509 | /* Copy the data out of the buffer we created */ | |
1510 | if (copy_to_user | |
1511 | (iocommand.buf, buff, iocommand.buf_size)) { | |
1512 | kfree(buff); | |
1513 | cmd_free(host, c, 0); | |
1514 | return -EFAULT; | |
1515 | } | |
1516 | } | |
1517 | kfree(buff); | |
1518 | cmd_free(host, c, 0); | |
1519 | return 0; | |
1da177e4 | 1520 | } |
7c832835 BH |
1521 | case CCISS_BIG_PASSTHRU:{ |
1522 | BIG_IOCTL_Command_struct *ioc; | |
1523 | CommandList_struct *c; | |
1524 | unsigned char **buff = NULL; | |
1525 | int *buff_size = NULL; | |
1526 | u64bit temp64; | |
7c832835 BH |
1527 | BYTE sg_used = 0; |
1528 | int status = 0; | |
1529 | int i; | |
6e9a4738 | 1530 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1531 | __u32 left; |
1532 | __u32 sz; | |
1533 | BYTE __user *data_ptr; | |
1534 | ||
1535 | if (!arg) | |
1536 | return -EINVAL; | |
1537 | if (!capable(CAP_SYS_RAWIO)) | |
1538 | return -EPERM; | |
1539 | ioc = (BIG_IOCTL_Command_struct *) | |
1540 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1541 | if (!ioc) { | |
1542 | status = -ENOMEM; | |
1543 | goto cleanup1; | |
1544 | } | |
1545 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1546 | status = -EFAULT; | |
1547 | goto cleanup1; | |
1548 | } | |
1549 | if ((ioc->buf_size < 1) && | |
1550 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1551 | status = -EINVAL; |
1552 | goto cleanup1; | |
7c832835 BH |
1553 | } |
1554 | /* Check kmalloc limits using all SGs */ | |
1555 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1556 | status = -EINVAL; | |
1557 | goto cleanup1; | |
1558 | } | |
1559 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1560 | status = -EINVAL; | |
1561 | goto cleanup1; | |
1562 | } | |
1563 | buff = | |
1564 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1565 | if (!buff) { | |
1da177e4 LT |
1566 | status = -ENOMEM; |
1567 | goto cleanup1; | |
1568 | } | |
5cbded58 | 1569 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
7c832835 BH |
1570 | GFP_KERNEL); |
1571 | if (!buff_size) { | |
1572 | status = -ENOMEM; | |
1573 | goto cleanup1; | |
1574 | } | |
1575 | left = ioc->buf_size; | |
1576 | data_ptr = ioc->buf; | |
1577 | while (left) { | |
1578 | sz = (left > | |
1579 | ioc->malloc_size) ? ioc-> | |
1580 | malloc_size : left; | |
1581 | buff_size[sg_used] = sz; | |
1582 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1583 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1584 | status = -ENOMEM; |
15534d38 JA |
1585 | goto cleanup1; |
1586 | } | |
7c832835 BH |
1587 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1588 | if (copy_from_user | |
1589 | (buff[sg_used], data_ptr, sz)) { | |
f7108f91 | 1590 | status = -EFAULT; |
7c832835 BH |
1591 | goto cleanup1; |
1592 | } | |
1593 | } else { | |
1594 | memset(buff[sg_used], 0, sz); | |
1595 | } | |
1596 | left -= sz; | |
1597 | data_ptr += sz; | |
1598 | sg_used++; | |
1599 | } | |
1600 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1601 | status = -ENOMEM; | |
1602 | goto cleanup1; | |
1603 | } | |
1604 | c->cmd_type = CMD_IOCTL_PEND; | |
1605 | c->Header.ReplyQueue = 0; | |
1606 | ||
1607 | if (ioc->buf_size > 0) { | |
1608 | c->Header.SGList = sg_used; | |
1609 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1610 | } else { |
7c832835 BH |
1611 | c->Header.SGList = 0; |
1612 | c->Header.SGTotal = 0; | |
1da177e4 | 1613 | } |
7c832835 BH |
1614 | c->Header.LUN = ioc->LUN_info; |
1615 | c->Header.Tag.lower = c->busaddr; | |
1616 | ||
1617 | c->Request = ioc->Request; | |
1618 | if (ioc->buf_size > 0) { | |
7c832835 BH |
1619 | for (i = 0; i < sg_used; i++) { |
1620 | temp64.val = | |
1621 | pci_map_single(host->pdev, buff[i], | |
1622 | buff_size[i], | |
1623 | PCI_DMA_BIDIRECTIONAL); | |
1624 | c->SG[i].Addr.lower = | |
1625 | temp64.val32.lower; | |
1626 | c->SG[i].Addr.upper = | |
1627 | temp64.val32.upper; | |
1628 | c->SG[i].Len = buff_size[i]; | |
1629 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1630 | } | |
1631 | } | |
1632 | c->waiting = &wait; | |
664a717d | 1633 | enqueue_cmd_and_start_io(host, c); |
7c832835 BH |
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(host->pdev, | |
1640 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1641 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1642 | } |
0a9279cc | 1643 | check_ioctl_unit_attention(host, c); |
7c832835 BH |
1644 | /* Copy the error information out */ |
1645 | ioc->error_info = *(c->err_info); | |
1646 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1647 | cmd_free(host, c, 0); | |
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 | |
1656 | (ptr, buff[i], buff_size[i])) { | |
1657 | cmd_free(host, c, 0); | |
1658 | status = -EFAULT; | |
1659 | goto cleanup1; | |
1660 | } | |
1661 | ptr += buff_size[i]; | |
1da177e4 | 1662 | } |
1da177e4 | 1663 | } |
7c832835 BH |
1664 | cmd_free(host, c, 0); |
1665 | status = 0; | |
1666 | cleanup1: | |
1667 | if (buff) { | |
1668 | for (i = 0; i < sg_used; i++) | |
1669 | kfree(buff[i]); | |
1670 | kfree(buff); | |
1671 | } | |
1672 | kfree(buff_size); | |
1673 | kfree(ioc); | |
1674 | return status; | |
1da177e4 | 1675 | } |
03bbfee5 MMOD |
1676 | |
1677 | /* scsi_cmd_ioctl handles these, below, though some are not */ | |
1678 | /* very meaningful for cciss. SG_IO is the main one people want. */ | |
1679 | ||
1680 | case SG_GET_VERSION_NUM: | |
1681 | case SG_SET_TIMEOUT: | |
1682 | case SG_GET_TIMEOUT: | |
1683 | case SG_GET_RESERVED_SIZE: | |
1684 | case SG_SET_RESERVED_SIZE: | |
1685 | case SG_EMULATED_HOST: | |
1686 | case SG_IO: | |
1687 | case SCSI_IOCTL_SEND_COMMAND: | |
ef7822c2 | 1688 | return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
03bbfee5 MMOD |
1689 | |
1690 | /* scsi_cmd_ioctl would normally handle these, below, but */ | |
1691 | /* they aren't a good fit for cciss, as CD-ROMs are */ | |
1692 | /* not supported, and we don't have any bus/target/lun */ | |
1693 | /* which we present to the kernel. */ | |
1694 | ||
1695 | case CDROM_SEND_PACKET: | |
1696 | case CDROMCLOSETRAY: | |
1697 | case CDROMEJECT: | |
1698 | case SCSI_IOCTL_GET_IDLUN: | |
1699 | case SCSI_IOCTL_GET_BUS_NUMBER: | |
1da177e4 LT |
1700 | default: |
1701 | return -ENOTTY; | |
1702 | } | |
1da177e4 LT |
1703 | } |
1704 | ||
7b30f092 JA |
1705 | static void cciss_check_queues(ctlr_info_t *h) |
1706 | { | |
1707 | int start_queue = h->next_to_run; | |
1708 | int i; | |
1709 | ||
1710 | /* check to see if we have maxed out the number of commands that can | |
1711 | * be placed on the queue. If so then exit. We do this check here | |
1712 | * in case the interrupt we serviced was from an ioctl and did not | |
1713 | * free any new commands. | |
1714 | */ | |
f880632f | 1715 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1716 | return; |
1717 | ||
1718 | /* We have room on the queue for more commands. Now we need to queue | |
1719 | * them up. We will also keep track of the next queue to run so | |
1720 | * that every queue gets a chance to be started first. | |
1721 | */ | |
1722 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1723 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1724 | /* make sure the disk has been added and the drive is real | |
1725 | * because this can be called from the middle of init_one. | |
1726 | */ | |
9cef0d2f SC |
1727 | if (!h->drv[curr_queue]) |
1728 | continue; | |
1729 | if (!(h->drv[curr_queue]->queue) || | |
1730 | !(h->drv[curr_queue]->heads)) | |
7b30f092 JA |
1731 | continue; |
1732 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1733 | ||
1734 | /* check to see if we have maxed out the number of commands | |
1735 | * that can be placed on the queue. | |
1736 | */ | |
f880632f | 1737 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1738 | if (curr_queue == start_queue) { |
1739 | h->next_to_run = | |
1740 | (start_queue + 1) % (h->highest_lun + 1); | |
1741 | break; | |
1742 | } else { | |
1743 | h->next_to_run = curr_queue; | |
1744 | break; | |
1745 | } | |
7b30f092 JA |
1746 | } |
1747 | } | |
1748 | } | |
1749 | ||
ca1e0484 MM |
1750 | static void cciss_softirq_done(struct request *rq) |
1751 | { | |
1752 | CommandList_struct *cmd = rq->completion_data; | |
1753 | ctlr_info_t *h = hba[cmd->ctlr]; | |
5c07a311 | 1754 | SGDescriptor_struct *curr_sg = cmd->SG; |
ca1e0484 | 1755 | u64bit temp64; |
664a717d | 1756 | unsigned long flags; |
ca1e0484 | 1757 | int i, ddir; |
5c07a311 | 1758 | int sg_index = 0; |
ca1e0484 MM |
1759 | |
1760 | if (cmd->Request.Type.Direction == XFER_READ) | |
1761 | ddir = PCI_DMA_FROMDEVICE; | |
1762 | else | |
1763 | ddir = PCI_DMA_TODEVICE; | |
1764 | ||
1765 | /* command did not need to be retried */ | |
1766 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1767 | for (i = 0; i < cmd->Header.SGList; i++) { |
5c07a311 | 1768 | if (curr_sg[sg_index].Ext == CCISS_SG_CHAIN) { |
d45033ef | 1769 | cciss_unmap_sg_chain_block(h, cmd); |
5c07a311 | 1770 | /* Point to the next block */ |
dccc9b56 | 1771 | curr_sg = h->cmd_sg_list[cmd->cmdindex]; |
5c07a311 DB |
1772 | sg_index = 0; |
1773 | } | |
1774 | temp64.val32.lower = curr_sg[sg_index].Addr.lower; | |
1775 | temp64.val32.upper = curr_sg[sg_index].Addr.upper; | |
1776 | pci_unmap_page(h->pdev, temp64.val, curr_sg[sg_index].Len, | |
1777 | ddir); | |
1778 | ++sg_index; | |
ca1e0484 MM |
1779 | } |
1780 | ||
ca1e0484 MM |
1781 | #ifdef CCISS_DEBUG |
1782 | printk("Done with %p\n", rq); | |
7c832835 | 1783 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1784 | |
c3a4d78c | 1785 | /* set the residual count for pc requests */ |
ac44e5b2 | 1786 | if (blk_pc_request(rq)) |
c3a4d78c | 1787 | rq->resid_len = cmd->err_info->ResidualCnt; |
ac44e5b2 | 1788 | |
c3a4d78c | 1789 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
3daeea29 | 1790 | |
ca1e0484 | 1791 | spin_lock_irqsave(&h->lock, flags); |
7c832835 | 1792 | cmd_free(h, cmd, 1); |
7b30f092 | 1793 | cciss_check_queues(h); |
ca1e0484 MM |
1794 | spin_unlock_irqrestore(&h->lock, flags); |
1795 | } | |
1796 | ||
39ccf9a6 SC |
1797 | static inline void log_unit_to_scsi3addr(ctlr_info_t *h, |
1798 | unsigned char scsi3addr[], uint32_t log_unit) | |
b57695fe | 1799 | { |
9cef0d2f SC |
1800 | memcpy(scsi3addr, h->drv[log_unit]->LunID, |
1801 | sizeof(h->drv[log_unit]->LunID)); | |
b57695fe | 1802 | } |
1803 | ||
7fe06326 AP |
1804 | /* This function gets the SCSI vendor, model, and revision of a logical drive |
1805 | * via the inquiry page 0. Model, vendor, and rev are set to empty strings if | |
1806 | * they cannot be read. | |
1807 | */ | |
7b838bde | 1808 | static void cciss_get_device_descr(int ctlr, int logvol, |
7fe06326 AP |
1809 | char *vendor, char *model, char *rev) |
1810 | { | |
1811 | int rc; | |
1812 | InquiryData_struct *inq_buf; | |
b57695fe | 1813 | unsigned char scsi3addr[8]; |
7fe06326 AP |
1814 | |
1815 | *vendor = '\0'; | |
1816 | *model = '\0'; | |
1817 | *rev = '\0'; | |
1818 | ||
1819 | inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
1820 | if (!inq_buf) | |
1821 | return; | |
1822 | ||
b57695fe | 1823 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
1824 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buf, sizeof(*inq_buf), 0, |
1825 | scsi3addr, TYPE_CMD); | |
7fe06326 AP |
1826 | if (rc == IO_OK) { |
1827 | memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); | |
1828 | vendor[VENDOR_LEN] = '\0'; | |
1829 | memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); | |
1830 | model[MODEL_LEN] = '\0'; | |
1831 | memcpy(rev, &inq_buf->data_byte[32], REV_LEN); | |
1832 | rev[REV_LEN] = '\0'; | |
1833 | } | |
1834 | ||
1835 | kfree(inq_buf); | |
1836 | return; | |
1837 | } | |
1838 | ||
a72da29b MM |
1839 | /* This function gets the serial number of a logical drive via |
1840 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial | |
1841 | * number cannot be had, for whatever reason, 16 bytes of 0xff | |
1842 | * are returned instead. | |
1843 | */ | |
7b838bde | 1844 | static void cciss_get_serial_no(int ctlr, int logvol, |
a72da29b MM |
1845 | unsigned char *serial_no, int buflen) |
1846 | { | |
1847 | #define PAGE_83_INQ_BYTES 64 | |
1848 | int rc; | |
1849 | unsigned char *buf; | |
b57695fe | 1850 | unsigned char scsi3addr[8]; |
a72da29b MM |
1851 | |
1852 | if (buflen > 16) | |
1853 | buflen = 16; | |
1854 | memset(serial_no, 0xff, buflen); | |
1855 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); | |
1856 | if (!buf) | |
1857 | return; | |
1858 | memset(serial_no, 0, buflen); | |
b57695fe | 1859 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
1860 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf, |
1861 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); | |
a72da29b MM |
1862 | if (rc == IO_OK) |
1863 | memcpy(serial_no, &buf[8], buflen); | |
1864 | kfree(buf); | |
1865 | return; | |
1866 | } | |
1867 | ||
617e1344 SC |
1868 | /* |
1869 | * cciss_add_disk sets up the block device queue for a logical drive | |
1870 | */ | |
1871 | static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, | |
6ae5ce8e MM |
1872 | int drv_index) |
1873 | { | |
1874 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); | |
e8074f79 SC |
1875 | if (!disk->queue) |
1876 | goto init_queue_failure; | |
6ae5ce8e MM |
1877 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); |
1878 | disk->major = h->major; | |
1879 | disk->first_minor = drv_index << NWD_SHIFT; | |
1880 | disk->fops = &cciss_fops; | |
9cef0d2f SC |
1881 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
1882 | goto cleanup_queue; | |
1883 | disk->private_data = h->drv[drv_index]; | |
1884 | disk->driverfs_dev = &h->drv[drv_index]->dev; | |
6ae5ce8e MM |
1885 | |
1886 | /* Set up queue information */ | |
1887 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); | |
1888 | ||
1889 | /* This is a hardware imposed limit. */ | |
8a78362c | 1890 | blk_queue_max_segments(disk->queue, h->maxsgentries); |
6ae5ce8e | 1891 | |
086fa5ff | 1892 | blk_queue_max_hw_sectors(disk->queue, h->cciss_max_sectors); |
6ae5ce8e MM |
1893 | |
1894 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); | |
1895 | ||
1896 | disk->queue->queuedata = h; | |
1897 | ||
e1defc4f | 1898 | blk_queue_logical_block_size(disk->queue, |
9cef0d2f | 1899 | h->drv[drv_index]->block_size); |
6ae5ce8e MM |
1900 | |
1901 | /* Make sure all queue data is written out before */ | |
9cef0d2f | 1902 | /* setting h->drv[drv_index]->queue, as setting this */ |
6ae5ce8e MM |
1903 | /* allows the interrupt handler to start the queue */ |
1904 | wmb(); | |
9cef0d2f | 1905 | h->drv[drv_index]->queue = disk->queue; |
6ae5ce8e | 1906 | add_disk(disk); |
617e1344 SC |
1907 | return 0; |
1908 | ||
1909 | cleanup_queue: | |
1910 | blk_cleanup_queue(disk->queue); | |
1911 | disk->queue = NULL; | |
e8074f79 | 1912 | init_queue_failure: |
617e1344 | 1913 | return -1; |
6ae5ce8e MM |
1914 | } |
1915 | ||
ddd47442 | 1916 | /* This function will check the usage_count of the drive to be updated/added. |
a72da29b MM |
1917 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
1918 | * the drive's capacity, geometry, or serial number has changed, | |
1919 | * then the drive information will be updated and the disk will be | |
1920 | * re-registered with the kernel. If these conditions don't hold, | |
1921 | * then it will be left alone for the next reboot. The exception to this | |
1922 | * is disk 0 which will always be left registered with the kernel since it | |
1923 | * is also the controller node. Any changes to disk 0 will show up on | |
1924 | * the next reboot. | |
7c832835 | 1925 | */ |
2d11d993 SC |
1926 | static void cciss_update_drive_info(int ctlr, int drv_index, int first_time, |
1927 | int via_ioctl) | |
7c832835 | 1928 | { |
ddd47442 MM |
1929 | ctlr_info_t *h = hba[ctlr]; |
1930 | struct gendisk *disk; | |
ddd47442 MM |
1931 | InquiryData_struct *inq_buff = NULL; |
1932 | unsigned int block_size; | |
00988a35 | 1933 | sector_t total_size; |
ddd47442 MM |
1934 | unsigned long flags = 0; |
1935 | int ret = 0; | |
a72da29b MM |
1936 | drive_info_struct *drvinfo; |
1937 | ||
1938 | /* Get information about the disk and modify the driver structure */ | |
1939 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
9cef0d2f | 1940 | drvinfo = kzalloc(sizeof(*drvinfo), GFP_KERNEL); |
a72da29b MM |
1941 | if (inq_buff == NULL || drvinfo == NULL) |
1942 | goto mem_msg; | |
1943 | ||
1944 | /* testing to see if 16-byte CDBs are already being used */ | |
1945 | if (h->cciss_read == CCISS_READ_16) { | |
7b838bde | 1946 | cciss_read_capacity_16(h->ctlr, drv_index, |
a72da29b MM |
1947 | &total_size, &block_size); |
1948 | ||
1949 | } else { | |
7b838bde | 1950 | cciss_read_capacity(ctlr, drv_index, &total_size, &block_size); |
a72da29b MM |
1951 | /* if read_capacity returns all F's this volume is >2TB */ |
1952 | /* in size so we switch to 16-byte CDB's for all */ | |
1953 | /* read/write ops */ | |
1954 | if (total_size == 0xFFFFFFFFULL) { | |
7b838bde | 1955 | cciss_read_capacity_16(ctlr, drv_index, |
a72da29b MM |
1956 | &total_size, &block_size); |
1957 | h->cciss_read = CCISS_READ_16; | |
1958 | h->cciss_write = CCISS_WRITE_16; | |
1959 | } else { | |
1960 | h->cciss_read = CCISS_READ_10; | |
1961 | h->cciss_write = CCISS_WRITE_10; | |
1962 | } | |
1963 | } | |
1964 | ||
7b838bde | 1965 | cciss_geometry_inquiry(ctlr, drv_index, total_size, block_size, |
a72da29b MM |
1966 | inq_buff, drvinfo); |
1967 | drvinfo->block_size = block_size; | |
1968 | drvinfo->nr_blocks = total_size + 1; | |
1969 | ||
7b838bde | 1970 | cciss_get_device_descr(ctlr, drv_index, drvinfo->vendor, |
7fe06326 | 1971 | drvinfo->model, drvinfo->rev); |
7b838bde | 1972 | cciss_get_serial_no(ctlr, drv_index, drvinfo->serial_no, |
a72da29b | 1973 | sizeof(drvinfo->serial_no)); |
9cef0d2f SC |
1974 | /* Save the lunid in case we deregister the disk, below. */ |
1975 | memcpy(drvinfo->LunID, h->drv[drv_index]->LunID, | |
1976 | sizeof(drvinfo->LunID)); | |
a72da29b MM |
1977 | |
1978 | /* Is it the same disk we already know, and nothing's changed? */ | |
9cef0d2f | 1979 | if (h->drv[drv_index]->raid_level != -1 && |
a72da29b | 1980 | ((memcmp(drvinfo->serial_no, |
9cef0d2f SC |
1981 | h->drv[drv_index]->serial_no, 16) == 0) && |
1982 | drvinfo->block_size == h->drv[drv_index]->block_size && | |
1983 | drvinfo->nr_blocks == h->drv[drv_index]->nr_blocks && | |
1984 | drvinfo->heads == h->drv[drv_index]->heads && | |
1985 | drvinfo->sectors == h->drv[drv_index]->sectors && | |
1986 | drvinfo->cylinders == h->drv[drv_index]->cylinders)) | |
a72da29b MM |
1987 | /* The disk is unchanged, nothing to update */ |
1988 | goto freeret; | |
a72da29b | 1989 | |
6ae5ce8e MM |
1990 | /* If we get here it's not the same disk, or something's changed, |
1991 | * so we need to * deregister it, and re-register it, if it's not | |
1992 | * in use. | |
1993 | * If the disk already exists then deregister it before proceeding | |
1994 | * (unless it's the first disk (for the controller node). | |
1995 | */ | |
9cef0d2f | 1996 | if (h->drv[drv_index]->raid_level != -1 && drv_index != 0) { |
a72da29b | 1997 | printk(KERN_WARNING "disk %d has changed.\n", drv_index); |
ddd47442 | 1998 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
9cef0d2f | 1999 | h->drv[drv_index]->busy_configuring = 1; |
ddd47442 | 2000 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
e14ac670 | 2001 | |
9cef0d2f | 2002 | /* deregister_disk sets h->drv[drv_index]->queue = NULL |
6ae5ce8e MM |
2003 | * which keeps the interrupt handler from starting |
2004 | * the queue. | |
2005 | */ | |
2d11d993 | 2006 | ret = deregister_disk(h, drv_index, 0, via_ioctl); |
ddd47442 MM |
2007 | } |
2008 | ||
2009 | /* If the disk is in use return */ | |
2010 | if (ret) | |
a72da29b MM |
2011 | goto freeret; |
2012 | ||
6ae5ce8e | 2013 | /* Save the new information from cciss_geometry_inquiry |
9cef0d2f SC |
2014 | * and serial number inquiry. If the disk was deregistered |
2015 | * above, then h->drv[drv_index] will be NULL. | |
6ae5ce8e | 2016 | */ |
9cef0d2f SC |
2017 | if (h->drv[drv_index] == NULL) { |
2018 | drvinfo->device_initialized = 0; | |
2019 | h->drv[drv_index] = drvinfo; | |
2020 | drvinfo = NULL; /* so it won't be freed below. */ | |
2021 | } else { | |
2022 | /* special case for cxd0 */ | |
2023 | h->drv[drv_index]->block_size = drvinfo->block_size; | |
2024 | h->drv[drv_index]->nr_blocks = drvinfo->nr_blocks; | |
2025 | h->drv[drv_index]->heads = drvinfo->heads; | |
2026 | h->drv[drv_index]->sectors = drvinfo->sectors; | |
2027 | h->drv[drv_index]->cylinders = drvinfo->cylinders; | |
2028 | h->drv[drv_index]->raid_level = drvinfo->raid_level; | |
2029 | memcpy(h->drv[drv_index]->serial_no, drvinfo->serial_no, 16); | |
2030 | memcpy(h->drv[drv_index]->vendor, drvinfo->vendor, | |
2031 | VENDOR_LEN + 1); | |
2032 | memcpy(h->drv[drv_index]->model, drvinfo->model, MODEL_LEN + 1); | |
2033 | memcpy(h->drv[drv_index]->rev, drvinfo->rev, REV_LEN + 1); | |
2034 | } | |
ddd47442 MM |
2035 | |
2036 | ++h->num_luns; | |
2037 | disk = h->gendisk[drv_index]; | |
9cef0d2f | 2038 | set_capacity(disk, h->drv[drv_index]->nr_blocks); |
ddd47442 | 2039 | |
6ae5ce8e MM |
2040 | /* If it's not disk 0 (drv_index != 0) |
2041 | * or if it was disk 0, but there was previously | |
2042 | * no actual corresponding configured logical drive | |
2043 | * (raid_leve == -1) then we want to update the | |
2044 | * logical drive's information. | |
2045 | */ | |
361e9b07 SC |
2046 | if (drv_index || first_time) { |
2047 | if (cciss_add_disk(h, disk, drv_index) != 0) { | |
2048 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 2049 | cciss_free_drive_info(h, drv_index); |
361e9b07 SC |
2050 | printk(KERN_WARNING "cciss:%d could not update " |
2051 | "disk %d\n", h->ctlr, drv_index); | |
2052 | --h->num_luns; | |
2053 | } | |
2054 | } | |
ddd47442 | 2055 | |
6ae5ce8e | 2056 | freeret: |
ddd47442 | 2057 | kfree(inq_buff); |
a72da29b | 2058 | kfree(drvinfo); |
ddd47442 | 2059 | return; |
6ae5ce8e | 2060 | mem_msg: |
ddd47442 MM |
2061 | printk(KERN_ERR "cciss: out of memory\n"); |
2062 | goto freeret; | |
2063 | } | |
2064 | ||
2065 | /* This function will find the first index of the controllers drive array | |
9cef0d2f SC |
2066 | * that has a null drv pointer and allocate the drive info struct and |
2067 | * will return that index This is where new drives will be added. | |
2068 | * If the index to be returned is greater than the highest_lun index for | |
2069 | * the controller then highest_lun is set * to this new index. | |
2070 | * If there are no available indexes or if tha allocation fails, then -1 | |
2071 | * is returned. * "controller_node" is used to know if this is a real | |
2072 | * logical drive, or just the controller node, which determines if this | |
2073 | * counts towards highest_lun. | |
7c832835 | 2074 | */ |
9cef0d2f | 2075 | static int cciss_alloc_drive_info(ctlr_info_t *h, int controller_node) |
ddd47442 MM |
2076 | { |
2077 | int i; | |
9cef0d2f | 2078 | drive_info_struct *drv; |
ddd47442 | 2079 | |
9cef0d2f | 2080 | /* Search for an empty slot for our drive info */ |
7c832835 | 2081 | for (i = 0; i < CISS_MAX_LUN; i++) { |
9cef0d2f SC |
2082 | |
2083 | /* if not cxd0 case, and it's occupied, skip it. */ | |
2084 | if (h->drv[i] && i != 0) | |
2085 | continue; | |
2086 | /* | |
2087 | * If it's cxd0 case, and drv is alloc'ed already, and a | |
2088 | * disk is configured there, skip it. | |
2089 | */ | |
2090 | if (i == 0 && h->drv[i] && h->drv[i]->raid_level != -1) | |
2091 | continue; | |
2092 | ||
2093 | /* | |
2094 | * We've found an empty slot. Update highest_lun | |
2095 | * provided this isn't just the fake cxd0 controller node. | |
2096 | */ | |
2097 | if (i > h->highest_lun && !controller_node) | |
2098 | h->highest_lun = i; | |
2099 | ||
2100 | /* If adding a real disk at cxd0, and it's already alloc'ed */ | |
2101 | if (i == 0 && h->drv[i] != NULL) | |
ddd47442 | 2102 | return i; |
9cef0d2f SC |
2103 | |
2104 | /* | |
2105 | * Found an empty slot, not already alloc'ed. Allocate it. | |
2106 | * Mark it with raid_level == -1, so we know it's new later on. | |
2107 | */ | |
2108 | drv = kzalloc(sizeof(*drv), GFP_KERNEL); | |
2109 | if (!drv) | |
2110 | return -1; | |
2111 | drv->raid_level = -1; /* so we know it's new */ | |
2112 | h->drv[i] = drv; | |
2113 | return i; | |
ddd47442 MM |
2114 | } |
2115 | return -1; | |
2116 | } | |
2117 | ||
9cef0d2f SC |
2118 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index) |
2119 | { | |
2120 | kfree(h->drv[drv_index]); | |
2121 | h->drv[drv_index] = NULL; | |
2122 | } | |
2123 | ||
361e9b07 SC |
2124 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index) |
2125 | { | |
2126 | put_disk(h->gendisk[drv_index]); | |
2127 | h->gendisk[drv_index] = NULL; | |
2128 | } | |
2129 | ||
6ae5ce8e MM |
2130 | /* cciss_add_gendisk finds a free hba[]->drv structure |
2131 | * and allocates a gendisk if needed, and sets the lunid | |
2132 | * in the drvinfo structure. It returns the index into | |
2133 | * the ->drv[] array, or -1 if none are free. | |
2134 | * is_controller_node indicates whether highest_lun should | |
2135 | * count this disk, or if it's only being added to provide | |
2136 | * a means to talk to the controller in case no logical | |
2137 | * drives have yet been configured. | |
2138 | */ | |
39ccf9a6 SC |
2139 | static int cciss_add_gendisk(ctlr_info_t *h, unsigned char lunid[], |
2140 | int controller_node) | |
6ae5ce8e MM |
2141 | { |
2142 | int drv_index; | |
2143 | ||
9cef0d2f | 2144 | drv_index = cciss_alloc_drive_info(h, controller_node); |
6ae5ce8e MM |
2145 | if (drv_index == -1) |
2146 | return -1; | |
8ce51966 | 2147 | |
6ae5ce8e MM |
2148 | /*Check if the gendisk needs to be allocated */ |
2149 | if (!h->gendisk[drv_index]) { | |
2150 | h->gendisk[drv_index] = | |
2151 | alloc_disk(1 << NWD_SHIFT); | |
2152 | if (!h->gendisk[drv_index]) { | |
2153 | printk(KERN_ERR "cciss%d: could not " | |
2154 | "allocate a new disk %d\n", | |
2155 | h->ctlr, drv_index); | |
9cef0d2f | 2156 | goto err_free_drive_info; |
6ae5ce8e MM |
2157 | } |
2158 | } | |
9cef0d2f SC |
2159 | memcpy(h->drv[drv_index]->LunID, lunid, |
2160 | sizeof(h->drv[drv_index]->LunID)); | |
2161 | if (cciss_create_ld_sysfs_entry(h, drv_index)) | |
7fe06326 | 2162 | goto err_free_disk; |
6ae5ce8e MM |
2163 | /* Don't need to mark this busy because nobody */ |
2164 | /* else knows about this disk yet to contend */ | |
2165 | /* for access to it. */ | |
9cef0d2f | 2166 | h->drv[drv_index]->busy_configuring = 0; |
6ae5ce8e MM |
2167 | wmb(); |
2168 | return drv_index; | |
7fe06326 AP |
2169 | |
2170 | err_free_disk: | |
361e9b07 | 2171 | cciss_free_gendisk(h, drv_index); |
9cef0d2f SC |
2172 | err_free_drive_info: |
2173 | cciss_free_drive_info(h, drv_index); | |
7fe06326 | 2174 | return -1; |
6ae5ce8e MM |
2175 | } |
2176 | ||
2177 | /* This is for the special case of a controller which | |
2178 | * has no logical drives. In this case, we still need | |
2179 | * to register a disk so the controller can be accessed | |
2180 | * by the Array Config Utility. | |
2181 | */ | |
2182 | static void cciss_add_controller_node(ctlr_info_t *h) | |
2183 | { | |
2184 | struct gendisk *disk; | |
2185 | int drv_index; | |
2186 | ||
2187 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ | |
2188 | return; | |
2189 | ||
39ccf9a6 | 2190 | drv_index = cciss_add_gendisk(h, CTLR_LUNID, 1); |
361e9b07 SC |
2191 | if (drv_index == -1) |
2192 | goto error; | |
9cef0d2f SC |
2193 | h->drv[drv_index]->block_size = 512; |
2194 | h->drv[drv_index]->nr_blocks = 0; | |
2195 | h->drv[drv_index]->heads = 0; | |
2196 | h->drv[drv_index]->sectors = 0; | |
2197 | h->drv[drv_index]->cylinders = 0; | |
2198 | h->drv[drv_index]->raid_level = -1; | |
2199 | memset(h->drv[drv_index]->serial_no, 0, 16); | |
6ae5ce8e | 2200 | disk = h->gendisk[drv_index]; |
361e9b07 SC |
2201 | if (cciss_add_disk(h, disk, drv_index) == 0) |
2202 | return; | |
2203 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 2204 | cciss_free_drive_info(h, drv_index); |
361e9b07 SC |
2205 | error: |
2206 | printk(KERN_WARNING "cciss%d: could not " | |
2207 | "add disk 0.\n", h->ctlr); | |
2208 | return; | |
6ae5ce8e MM |
2209 | } |
2210 | ||
ddd47442 | 2211 | /* This function will add and remove logical drives from the Logical |
d14c4ab5 | 2212 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
2213 | * so that mount points are preserved until the next reboot. This allows |
2214 | * for the removal of logical drives in the middle of the drive array | |
2215 | * without a re-ordering of those drives. | |
2216 | * INPUT | |
2217 | * h = The controller to perform the operations on | |
7c832835 | 2218 | */ |
2d11d993 SC |
2219 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, |
2220 | int via_ioctl) | |
1da177e4 | 2221 | { |
ddd47442 MM |
2222 | int ctlr = h->ctlr; |
2223 | int num_luns; | |
2224 | ReportLunData_struct *ld_buff = NULL; | |
ddd47442 MM |
2225 | int return_code; |
2226 | int listlength = 0; | |
2227 | int i; | |
2228 | int drv_found; | |
2229 | int drv_index = 0; | |
39ccf9a6 | 2230 | unsigned char lunid[8] = CTLR_LUNID; |
1da177e4 | 2231 | unsigned long flags; |
ddd47442 | 2232 | |
6ae5ce8e MM |
2233 | if (!capable(CAP_SYS_RAWIO)) |
2234 | return -EPERM; | |
2235 | ||
ddd47442 MM |
2236 | /* Set busy_configuring flag for this operation */ |
2237 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 2238 | if (h->busy_configuring) { |
ddd47442 MM |
2239 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2240 | return -EBUSY; | |
2241 | } | |
2242 | h->busy_configuring = 1; | |
a72da29b | 2243 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
ddd47442 | 2244 | |
a72da29b MM |
2245 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
2246 | if (ld_buff == NULL) | |
2247 | goto mem_msg; | |
2248 | ||
2249 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
b57695fe | 2250 | sizeof(ReportLunData_struct), |
2251 | 0, CTLR_LUNID, TYPE_CMD); | |
ddd47442 | 2252 | |
a72da29b MM |
2253 | if (return_code == IO_OK) |
2254 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); | |
2255 | else { /* reading number of logical volumes failed */ | |
2256 | printk(KERN_WARNING "cciss: report logical volume" | |
2257 | " command failed\n"); | |
2258 | listlength = 0; | |
2259 | goto freeret; | |
2260 | } | |
2261 | ||
2262 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
2263 | if (num_luns > CISS_MAX_LUN) { | |
2264 | num_luns = CISS_MAX_LUN; | |
2265 | printk(KERN_WARNING "cciss: more luns configured" | |
2266 | " on controller than can be handled by" | |
2267 | " this driver.\n"); | |
2268 | } | |
2269 | ||
6ae5ce8e MM |
2270 | if (num_luns == 0) |
2271 | cciss_add_controller_node(h); | |
2272 | ||
2273 | /* Compare controller drive array to driver's drive array | |
2274 | * to see if any drives are missing on the controller due | |
2275 | * to action of Array Config Utility (user deletes drive) | |
2276 | * and deregister logical drives which have disappeared. | |
2277 | */ | |
a72da29b MM |
2278 | for (i = 0; i <= h->highest_lun; i++) { |
2279 | int j; | |
2280 | drv_found = 0; | |
d8a0be6a SC |
2281 | |
2282 | /* skip holes in the array from already deleted drives */ | |
9cef0d2f | 2283 | if (h->drv[i] == NULL) |
d8a0be6a SC |
2284 | continue; |
2285 | ||
a72da29b | 2286 | for (j = 0; j < num_luns; j++) { |
39ccf9a6 | 2287 | memcpy(lunid, &ld_buff->LUN[j][0], sizeof(lunid)); |
9cef0d2f | 2288 | if (memcmp(h->drv[i]->LunID, lunid, |
39ccf9a6 | 2289 | sizeof(lunid)) == 0) { |
a72da29b MM |
2290 | drv_found = 1; |
2291 | break; | |
2292 | } | |
2293 | } | |
2294 | if (!drv_found) { | |
2295 | /* Deregister it from the OS, it's gone. */ | |
2296 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
9cef0d2f | 2297 | h->drv[i]->busy_configuring = 1; |
a72da29b | 2298 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2d11d993 | 2299 | return_code = deregister_disk(h, i, 1, via_ioctl); |
9cef0d2f SC |
2300 | if (h->drv[i] != NULL) |
2301 | h->drv[i]->busy_configuring = 0; | |
ddd47442 | 2302 | } |
a72da29b | 2303 | } |
ddd47442 | 2304 | |
a72da29b MM |
2305 | /* Compare controller drive array to driver's drive array. |
2306 | * Check for updates in the drive information and any new drives | |
2307 | * on the controller due to ACU adding logical drives, or changing | |
2308 | * a logical drive's size, etc. Reregister any new/changed drives | |
2309 | */ | |
2310 | for (i = 0; i < num_luns; i++) { | |
2311 | int j; | |
ddd47442 | 2312 | |
a72da29b | 2313 | drv_found = 0; |
ddd47442 | 2314 | |
39ccf9a6 | 2315 | memcpy(lunid, &ld_buff->LUN[i][0], sizeof(lunid)); |
a72da29b MM |
2316 | /* Find if the LUN is already in the drive array |
2317 | * of the driver. If so then update its info | |
2318 | * if not in use. If it does not exist then find | |
2319 | * the first free index and add it. | |
2320 | */ | |
2321 | for (j = 0; j <= h->highest_lun; j++) { | |
9cef0d2f SC |
2322 | if (h->drv[j] != NULL && |
2323 | memcmp(h->drv[j]->LunID, lunid, | |
2324 | sizeof(h->drv[j]->LunID)) == 0) { | |
a72da29b MM |
2325 | drv_index = j; |
2326 | drv_found = 1; | |
2327 | break; | |
ddd47442 | 2328 | } |
a72da29b | 2329 | } |
ddd47442 | 2330 | |
a72da29b MM |
2331 | /* check if the drive was found already in the array */ |
2332 | if (!drv_found) { | |
eece695f | 2333 | drv_index = cciss_add_gendisk(h, lunid, 0); |
a72da29b MM |
2334 | if (drv_index == -1) |
2335 | goto freeret; | |
a72da29b | 2336 | } |
2d11d993 SC |
2337 | cciss_update_drive_info(ctlr, drv_index, first_time, |
2338 | via_ioctl); | |
a72da29b | 2339 | } /* end for */ |
ddd47442 | 2340 | |
6ae5ce8e | 2341 | freeret: |
ddd47442 MM |
2342 | kfree(ld_buff); |
2343 | h->busy_configuring = 0; | |
2344 | /* We return -1 here to tell the ACU that we have registered/updated | |
2345 | * all of the drives that we can and to keep it from calling us | |
2346 | * additional times. | |
7c832835 | 2347 | */ |
ddd47442 | 2348 | return -1; |
6ae5ce8e | 2349 | mem_msg: |
ddd47442 | 2350 | printk(KERN_ERR "cciss: out of memory\n"); |
a72da29b | 2351 | h->busy_configuring = 0; |
ddd47442 MM |
2352 | goto freeret; |
2353 | } | |
2354 | ||
9ddb27b4 SC |
2355 | static void cciss_clear_drive_info(drive_info_struct *drive_info) |
2356 | { | |
2357 | /* zero out the disk size info */ | |
2358 | drive_info->nr_blocks = 0; | |
2359 | drive_info->block_size = 0; | |
2360 | drive_info->heads = 0; | |
2361 | drive_info->sectors = 0; | |
2362 | drive_info->cylinders = 0; | |
2363 | drive_info->raid_level = -1; | |
2364 | memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no)); | |
2365 | memset(drive_info->model, 0, sizeof(drive_info->model)); | |
2366 | memset(drive_info->rev, 0, sizeof(drive_info->rev)); | |
2367 | memset(drive_info->vendor, 0, sizeof(drive_info->vendor)); | |
2368 | /* | |
2369 | * don't clear the LUNID though, we need to remember which | |
2370 | * one this one is. | |
2371 | */ | |
2372 | } | |
2373 | ||
ddd47442 MM |
2374 | /* This function will deregister the disk and it's queue from the |
2375 | * kernel. It must be called with the controller lock held and the | |
2376 | * drv structures busy_configuring flag set. It's parameters are: | |
2377 | * | |
2378 | * disk = This is the disk to be deregistered | |
2379 | * drv = This is the drive_info_struct associated with the disk to be | |
2380 | * deregistered. It contains information about the disk used | |
2381 | * by the driver. | |
2382 | * clear_all = This flag determines whether or not the disk information | |
2383 | * is going to be completely cleared out and the highest_lun | |
2384 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 2385 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
2386 | * the highest_lun should be left unchanged and the LunID |
2387 | * should not be cleared. | |
2d11d993 SC |
2388 | * via_ioctl |
2389 | * This indicates whether we've reached this path via ioctl. | |
2390 | * This affects the maximum usage count allowed for c0d0 to be messed with. | |
2391 | * If this path is reached via ioctl(), then the max_usage_count will | |
2392 | * be 1, as the process calling ioctl() has got to have the device open. | |
2393 | * If we get here via sysfs, then the max usage count will be zero. | |
ddd47442 | 2394 | */ |
a0ea8622 | 2395 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
2d11d993 | 2396 | int clear_all, int via_ioctl) |
ddd47442 | 2397 | { |
799202cb | 2398 | int i; |
a0ea8622 SC |
2399 | struct gendisk *disk; |
2400 | drive_info_struct *drv; | |
9cef0d2f | 2401 | int recalculate_highest_lun; |
1da177e4 LT |
2402 | |
2403 | if (!capable(CAP_SYS_RAWIO)) | |
2404 | return -EPERM; | |
2405 | ||
9cef0d2f | 2406 | drv = h->drv[drv_index]; |
a0ea8622 SC |
2407 | disk = h->gendisk[drv_index]; |
2408 | ||
1da177e4 | 2409 | /* make sure logical volume is NOT is use */ |
7c832835 | 2410 | if (clear_all || (h->gendisk[0] == disk)) { |
2d11d993 | 2411 | if (drv->usage_count > via_ioctl) |
7c832835 BH |
2412 | return -EBUSY; |
2413 | } else if (drv->usage_count > 0) | |
2414 | return -EBUSY; | |
1da177e4 | 2415 | |
9cef0d2f SC |
2416 | recalculate_highest_lun = (drv == h->drv[h->highest_lun]); |
2417 | ||
ddd47442 MM |
2418 | /* invalidate the devices and deregister the disk. If it is disk |
2419 | * zero do not deregister it but just zero out it's values. This | |
2420 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
2421 | */ |
2422 | if (h->gendisk[0] != disk) { | |
5a9df732 | 2423 | struct request_queue *q = disk->queue; |
097d0264 | 2424 | if (disk->flags & GENHD_FL_UP) { |
8ce51966 | 2425 | cciss_destroy_ld_sysfs_entry(h, drv_index, 0); |
5a9df732 | 2426 | del_gendisk(disk); |
5a9df732 | 2427 | } |
9cef0d2f | 2428 | if (q) |
5a9df732 | 2429 | blk_cleanup_queue(q); |
5a9df732 AB |
2430 | /* If clear_all is set then we are deleting the logical |
2431 | * drive, not just refreshing its info. For drives | |
2432 | * other than disk 0 we will call put_disk. We do not | |
2433 | * do this for disk 0 as we need it to be able to | |
2434 | * configure the controller. | |
a72da29b | 2435 | */ |
5a9df732 AB |
2436 | if (clear_all){ |
2437 | /* This isn't pretty, but we need to find the | |
2438 | * disk in our array and NULL our the pointer. | |
2439 | * This is so that we will call alloc_disk if | |
2440 | * this index is used again later. | |
a72da29b | 2441 | */ |
5a9df732 | 2442 | for (i=0; i < CISS_MAX_LUN; i++){ |
a72da29b | 2443 | if (h->gendisk[i] == disk) { |
5a9df732 AB |
2444 | h->gendisk[i] = NULL; |
2445 | break; | |
799202cb | 2446 | } |
799202cb | 2447 | } |
5a9df732 | 2448 | put_disk(disk); |
ddd47442 | 2449 | } |
799202cb MM |
2450 | } else { |
2451 | set_capacity(disk, 0); | |
9cef0d2f | 2452 | cciss_clear_drive_info(drv); |
ddd47442 MM |
2453 | } |
2454 | ||
2455 | --h->num_luns; | |
ddd47442 | 2456 | |
9cef0d2f SC |
2457 | /* if it was the last disk, find the new hightest lun */ |
2458 | if (clear_all && recalculate_highest_lun) { | |
c2d45b4d | 2459 | int newhighest = -1; |
9cef0d2f SC |
2460 | for (i = 0; i <= h->highest_lun; i++) { |
2461 | /* if the disk has size > 0, it is available */ | |
2462 | if (h->drv[i] && h->drv[i]->heads) | |
2463 | newhighest = i; | |
1da177e4 | 2464 | } |
9cef0d2f | 2465 | h->highest_lun = newhighest; |
ddd47442 | 2466 | } |
e2019b58 | 2467 | return 0; |
1da177e4 | 2468 | } |
ddd47442 | 2469 | |
b57695fe | 2470 | static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, |
2471 | size_t size, __u8 page_code, unsigned char *scsi3addr, | |
2472 | int cmd_type) | |
1da177e4 | 2473 | { |
7c832835 | 2474 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
2475 | u64bit buff_dma_handle; |
2476 | int status = IO_OK; | |
2477 | ||
2478 | c->cmd_type = CMD_IOCTL_PEND; | |
2479 | c->Header.ReplyQueue = 0; | |
7c832835 | 2480 | if (buff != NULL) { |
1da177e4 | 2481 | c->Header.SGList = 1; |
7c832835 | 2482 | c->Header.SGTotal = 1; |
1da177e4 LT |
2483 | } else { |
2484 | c->Header.SGList = 0; | |
7c832835 | 2485 | c->Header.SGTotal = 0; |
1da177e4 LT |
2486 | } |
2487 | c->Header.Tag.lower = c->busaddr; | |
b57695fe | 2488 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
1da177e4 LT |
2489 | |
2490 | c->Request.Type.Type = cmd_type; | |
2491 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
2492 | switch (cmd) { |
2493 | case CISS_INQUIRY: | |
1da177e4 | 2494 | /* are we trying to read a vital product page */ |
7c832835 | 2495 | if (page_code != 0) { |
1da177e4 LT |
2496 | c->Request.CDB[1] = 0x01; |
2497 | c->Request.CDB[2] = page_code; | |
2498 | } | |
2499 | c->Request.CDBLen = 6; | |
7c832835 | 2500 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
2501 | c->Request.Type.Direction = XFER_READ; |
2502 | c->Request.Timeout = 0; | |
7c832835 BH |
2503 | c->Request.CDB[0] = CISS_INQUIRY; |
2504 | c->Request.CDB[4] = size & 0xFF; | |
2505 | break; | |
1da177e4 LT |
2506 | case CISS_REPORT_LOG: |
2507 | case CISS_REPORT_PHYS: | |
7c832835 | 2508 | /* Talking to controller so It's a physical command |
1da177e4 | 2509 | mode = 00 target = 0. Nothing to write. |
7c832835 | 2510 | */ |
1da177e4 LT |
2511 | c->Request.CDBLen = 12; |
2512 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2513 | c->Request.Type.Direction = XFER_READ; | |
2514 | c->Request.Timeout = 0; | |
2515 | c->Request.CDB[0] = cmd; | |
b028461d | 2516 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ |
1da177e4 LT |
2517 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
2518 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
2519 | c->Request.CDB[9] = size & 0xFF; | |
2520 | break; | |
2521 | ||
2522 | case CCISS_READ_CAPACITY: | |
1da177e4 LT |
2523 | c->Request.CDBLen = 10; |
2524 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2525 | c->Request.Type.Direction = XFER_READ; | |
2526 | c->Request.Timeout = 0; | |
2527 | c->Request.CDB[0] = cmd; | |
7c832835 | 2528 | break; |
00988a35 | 2529 | case CCISS_READ_CAPACITY_16: |
00988a35 MMOD |
2530 | c->Request.CDBLen = 16; |
2531 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2532 | c->Request.Type.Direction = XFER_READ; | |
2533 | c->Request.Timeout = 0; | |
2534 | c->Request.CDB[0] = cmd; | |
2535 | c->Request.CDB[1] = 0x10; | |
2536 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
2537 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
2538 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
2539 | c->Request.CDB[13] = size & 0xFF; | |
2540 | c->Request.Timeout = 0; | |
2541 | c->Request.CDB[0] = cmd; | |
2542 | break; | |
1da177e4 LT |
2543 | case CCISS_CACHE_FLUSH: |
2544 | c->Request.CDBLen = 12; | |
2545 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2546 | c->Request.Type.Direction = XFER_WRITE; | |
2547 | c->Request.Timeout = 0; | |
2548 | c->Request.CDB[0] = BMIC_WRITE; | |
2549 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 2550 | break; |
88f627ae | 2551 | case TEST_UNIT_READY: |
88f627ae SC |
2552 | c->Request.CDBLen = 6; |
2553 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2554 | c->Request.Type.Direction = XFER_NONE; | |
2555 | c->Request.Timeout = 0; | |
2556 | break; | |
1da177e4 LT |
2557 | default: |
2558 | printk(KERN_WARNING | |
7c832835 | 2559 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 2560 | return IO_ERROR; |
1da177e4 LT |
2561 | } |
2562 | } else if (cmd_type == TYPE_MSG) { | |
2563 | switch (cmd) { | |
7c832835 | 2564 | case 0: /* ABORT message */ |
3da8b713 | 2565 | c->Request.CDBLen = 12; |
2566 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2567 | c->Request.Type.Direction = XFER_WRITE; | |
2568 | c->Request.Timeout = 0; | |
7c832835 BH |
2569 | c->Request.CDB[0] = cmd; /* abort */ |
2570 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 2571 | /* buff contains the tag of the command to abort */ |
2572 | memcpy(&c->Request.CDB[4], buff, 8); | |
2573 | break; | |
7c832835 | 2574 | case 1: /* RESET message */ |
88f627ae | 2575 | c->Request.CDBLen = 16; |
3da8b713 | 2576 | c->Request.Type.Attribute = ATTR_SIMPLE; |
88f627ae | 2577 | c->Request.Type.Direction = XFER_NONE; |
3da8b713 | 2578 | c->Request.Timeout = 0; |
2579 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 | 2580 | c->Request.CDB[0] = cmd; /* reset */ |
88f627ae | 2581 | c->Request.CDB[1] = 0x03; /* reset a target */ |
00988a35 | 2582 | break; |
1da177e4 LT |
2583 | case 3: /* No-Op message */ |
2584 | c->Request.CDBLen = 1; | |
2585 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2586 | c->Request.Type.Direction = XFER_WRITE; | |
2587 | c->Request.Timeout = 0; | |
2588 | c->Request.CDB[0] = cmd; | |
2589 | break; | |
2590 | default: | |
2591 | printk(KERN_WARNING | |
7c832835 | 2592 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
2593 | return IO_ERROR; |
2594 | } | |
2595 | } else { | |
2596 | printk(KERN_WARNING | |
7c832835 | 2597 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
2598 | return IO_ERROR; |
2599 | } | |
2600 | /* Fill in the scatter gather information */ | |
2601 | if (size > 0) { | |
2602 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
2603 | buff, size, |
2604 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
2605 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
2606 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
2607 | c->SG[0].Len = size; | |
7c832835 | 2608 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
2609 | } |
2610 | return status; | |
2611 | } | |
7c832835 | 2612 | |
3c2ab402 | 2613 | static int check_target_status(ctlr_info_t *h, CommandList_struct *c) |
2614 | { | |
2615 | switch (c->err_info->ScsiStatus) { | |
2616 | case SAM_STAT_GOOD: | |
2617 | return IO_OK; | |
2618 | case SAM_STAT_CHECK_CONDITION: | |
2619 | switch (0xf & c->err_info->SenseInfo[2]) { | |
2620 | case 0: return IO_OK; /* no sense */ | |
2621 | case 1: return IO_OK; /* recovered error */ | |
2622 | default: | |
c08fac65 SC |
2623 | if (check_for_unit_attention(h, c)) |
2624 | return IO_NEEDS_RETRY; | |
3c2ab402 | 2625 | printk(KERN_WARNING "cciss%d: cmd 0x%02x " |
2626 | "check condition, sense key = 0x%02x\n", | |
2627 | h->ctlr, c->Request.CDB[0], | |
2628 | c->err_info->SenseInfo[2]); | |
2629 | } | |
2630 | break; | |
2631 | default: | |
2632 | printk(KERN_WARNING "cciss%d: cmd 0x%02x" | |
2633 | "scsi status = 0x%02x\n", h->ctlr, | |
2634 | c->Request.CDB[0], c->err_info->ScsiStatus); | |
2635 | break; | |
2636 | } | |
2637 | return IO_ERROR; | |
2638 | } | |
2639 | ||
789a424a | 2640 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 | 2641 | { |
5390cfc3 | 2642 | int return_status = IO_OK; |
7c832835 | 2643 | |
789a424a | 2644 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
2645 | return IO_OK; | |
5390cfc3 | 2646 | |
2647 | switch (c->err_info->CommandStatus) { | |
2648 | case CMD_TARGET_STATUS: | |
3c2ab402 | 2649 | return_status = check_target_status(h, c); |
5390cfc3 | 2650 | break; |
2651 | case CMD_DATA_UNDERRUN: | |
2652 | case CMD_DATA_OVERRUN: | |
2653 | /* expected for inquiry and report lun commands */ | |
2654 | break; | |
2655 | case CMD_INVALID: | |
789a424a | 2656 | printk(KERN_WARNING "cciss: cmd 0x%02x is " |
5390cfc3 | 2657 | "reported invalid\n", c->Request.CDB[0]); |
2658 | return_status = IO_ERROR; | |
2659 | break; | |
2660 | case CMD_PROTOCOL_ERR: | |
2661 | printk(KERN_WARNING "cciss: cmd 0x%02x has " | |
2662 | "protocol error \n", c->Request.CDB[0]); | |
2663 | return_status = IO_ERROR; | |
2664 | break; | |
2665 | case CMD_HARDWARE_ERR: | |
2666 | printk(KERN_WARNING "cciss: cmd 0x%02x had " | |
2667 | " hardware error\n", c->Request.CDB[0]); | |
2668 | return_status = IO_ERROR; | |
2669 | break; | |
2670 | case CMD_CONNECTION_LOST: | |
2671 | printk(KERN_WARNING "cciss: cmd 0x%02x had " | |
2672 | "connection lost\n", c->Request.CDB[0]); | |
2673 | return_status = IO_ERROR; | |
2674 | break; | |
2675 | case CMD_ABORTED: | |
2676 | printk(KERN_WARNING "cciss: cmd 0x%02x was " | |
2677 | "aborted\n", c->Request.CDB[0]); | |
2678 | return_status = IO_ERROR; | |
2679 | break; | |
2680 | case CMD_ABORT_FAILED: | |
2681 | printk(KERN_WARNING "cciss: cmd 0x%02x reports " | |
2682 | "abort failed\n", c->Request.CDB[0]); | |
2683 | return_status = IO_ERROR; | |
2684 | break; | |
2685 | case CMD_UNSOLICITED_ABORT: | |
2686 | printk(KERN_WARNING | |
2687 | "cciss%d: unsolicited abort 0x%02x\n", h->ctlr, | |
2688 | c->Request.CDB[0]); | |
789a424a | 2689 | return_status = IO_NEEDS_RETRY; |
5390cfc3 | 2690 | break; |
2691 | default: | |
2692 | printk(KERN_WARNING "cciss: cmd 0x%02x returned " | |
2693 | "unknown status %x\n", c->Request.CDB[0], | |
2694 | c->err_info->CommandStatus); | |
2695 | return_status = IO_ERROR; | |
7c832835 | 2696 | } |
789a424a | 2697 | return return_status; |
2698 | } | |
2699 | ||
2700 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, | |
2701 | int attempt_retry) | |
2702 | { | |
2703 | DECLARE_COMPLETION_ONSTACK(wait); | |
2704 | u64bit buff_dma_handle; | |
789a424a | 2705 | int return_status = IO_OK; |
2706 | ||
2707 | resend_cmd2: | |
2708 | c->waiting = &wait; | |
664a717d | 2709 | enqueue_cmd_and_start_io(h, c); |
789a424a | 2710 | |
2711 | wait_for_completion(&wait); | |
2712 | ||
2713 | if (c->err_info->CommandStatus == 0 || !attempt_retry) | |
2714 | goto command_done; | |
2715 | ||
2716 | return_status = process_sendcmd_error(h, c); | |
2717 | ||
2718 | if (return_status == IO_NEEDS_RETRY && | |
2719 | c->retry_count < MAX_CMD_RETRIES) { | |
2720 | printk(KERN_WARNING "cciss%d: retrying 0x%02x\n", h->ctlr, | |
2721 | c->Request.CDB[0]); | |
2722 | c->retry_count++; | |
2723 | /* erase the old error information */ | |
2724 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2725 | return_status = IO_OK; | |
2726 | INIT_COMPLETION(wait); | |
2727 | goto resend_cmd2; | |
2728 | } | |
5390cfc3 | 2729 | |
2730 | command_done: | |
1da177e4 | 2731 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
2732 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2733 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
2734 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
2735 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
5390cfc3 | 2736 | return return_status; |
2737 | } | |
2738 | ||
b57695fe | 2739 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
2740 | __u8 page_code, unsigned char scsi3addr[], | |
2741 | int cmd_type) | |
5390cfc3 | 2742 | { |
2743 | ctlr_info_t *h = hba[ctlr]; | |
2744 | CommandList_struct *c; | |
2745 | int return_status; | |
2746 | ||
2747 | c = cmd_alloc(h, 0); | |
2748 | if (!c) | |
2749 | return -ENOMEM; | |
b57695fe | 2750 | return_status = fill_cmd(c, cmd, ctlr, buff, size, page_code, |
2751 | scsi3addr, cmd_type); | |
5390cfc3 | 2752 | if (return_status == IO_OK) |
789a424a | 2753 | return_status = sendcmd_withirq_core(h, c, 1); |
2754 | ||
1da177e4 | 2755 | cmd_free(h, c, 0); |
7c832835 | 2756 | return return_status; |
1da177e4 | 2757 | } |
7c832835 | 2758 | |
1da177e4 | 2759 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
7b838bde | 2760 | sector_t total_size, |
7c832835 BH |
2761 | unsigned int block_size, |
2762 | InquiryData_struct *inq_buff, | |
2763 | drive_info_struct *drv) | |
1da177e4 LT |
2764 | { |
2765 | int return_code; | |
00988a35 | 2766 | unsigned long t; |
b57695fe | 2767 | unsigned char scsi3addr[8]; |
00988a35 | 2768 | |
1da177e4 | 2769 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
b57695fe | 2770 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
2771 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buff, |
2772 | sizeof(*inq_buff), 0xC1, scsi3addr, TYPE_CMD); | |
1da177e4 | 2773 | if (return_code == IO_OK) { |
7c832835 | 2774 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 2775 | printk(KERN_WARNING |
7c832835 BH |
2776 | "cciss: reading geometry failed, volume " |
2777 | "does not support reading geometry\n"); | |
1da177e4 | 2778 | drv->heads = 255; |
b028461d | 2779 | drv->sectors = 32; /* Sectors per track */ |
7f42d3b8 | 2780 | drv->cylinders = total_size + 1; |
89f97ad1 | 2781 | drv->raid_level = RAID_UNKNOWN; |
1da177e4 | 2782 | } else { |
1da177e4 LT |
2783 | drv->heads = inq_buff->data_byte[6]; |
2784 | drv->sectors = inq_buff->data_byte[7]; | |
2785 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
2786 | drv->cylinders += inq_buff->data_byte[5]; | |
2787 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
2788 | } |
2789 | drv->block_size = block_size; | |
97c06978 | 2790 | drv->nr_blocks = total_size + 1; |
3f7705ea MW |
2791 | t = drv->heads * drv->sectors; |
2792 | if (t > 1) { | |
97c06978 MMOD |
2793 | sector_t real_size = total_size + 1; |
2794 | unsigned long rem = sector_div(real_size, t); | |
3f7705ea | 2795 | if (rem) |
97c06978 MMOD |
2796 | real_size++; |
2797 | drv->cylinders = real_size; | |
1da177e4 | 2798 | } |
7c832835 | 2799 | } else { /* Get geometry failed */ |
1da177e4 LT |
2800 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
2801 | } | |
1da177e4 | 2802 | } |
7c832835 | 2803 | |
1da177e4 | 2804 | static void |
7b838bde | 2805 | cciss_read_capacity(int ctlr, int logvol, sector_t *total_size, |
7c832835 | 2806 | unsigned int *block_size) |
1da177e4 | 2807 | { |
00988a35 | 2808 | ReadCapdata_struct *buf; |
1da177e4 | 2809 | int return_code; |
b57695fe | 2810 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2811 | |
2812 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); | |
2813 | if (!buf) { | |
00988a35 MMOD |
2814 | printk(KERN_WARNING "cciss: out of memory\n"); |
2815 | return; | |
2816 | } | |
1aebe187 | 2817 | |
b57695fe | 2818 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
2819 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, ctlr, buf, |
2820 | sizeof(ReadCapdata_struct), 0, scsi3addr, TYPE_CMD); | |
1da177e4 | 2821 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2822 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
2823 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
7c832835 | 2824 | } else { /* read capacity command failed */ |
1da177e4 LT |
2825 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
2826 | *total_size = 0; | |
2827 | *block_size = BLOCK_SIZE; | |
2828 | } | |
00988a35 | 2829 | kfree(buf); |
00988a35 MMOD |
2830 | } |
2831 | ||
7b838bde SC |
2832 | static void cciss_read_capacity_16(int ctlr, int logvol, |
2833 | sector_t *total_size, unsigned int *block_size) | |
00988a35 MMOD |
2834 | { |
2835 | ReadCapdata_struct_16 *buf; | |
2836 | int return_code; | |
b57695fe | 2837 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2838 | |
2839 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2840 | if (!buf) { | |
00988a35 MMOD |
2841 | printk(KERN_WARNING "cciss: out of memory\n"); |
2842 | return; | |
2843 | } | |
1aebe187 | 2844 | |
b57695fe | 2845 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
2846 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, |
2847 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2848 | 0, scsi3addr, TYPE_CMD); | |
00988a35 | 2849 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2850 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
2851 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
00988a35 MMOD |
2852 | } else { /* read capacity command failed */ |
2853 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
2854 | *total_size = 0; | |
2855 | *block_size = BLOCK_SIZE; | |
2856 | } | |
7b92aadf | 2857 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2858 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2859 | kfree(buf); |
1da177e4 LT |
2860 | } |
2861 | ||
1da177e4 LT |
2862 | static int cciss_revalidate(struct gendisk *disk) |
2863 | { | |
2864 | ctlr_info_t *h = get_host(disk); | |
2865 | drive_info_struct *drv = get_drv(disk); | |
2866 | int logvol; | |
7c832835 | 2867 | int FOUND = 0; |
1da177e4 | 2868 | unsigned int block_size; |
00988a35 | 2869 | sector_t total_size; |
1da177e4 LT |
2870 | InquiryData_struct *inq_buff = NULL; |
2871 | ||
7c832835 | 2872 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
9cef0d2f | 2873 | if (memcmp(h->drv[logvol]->LunID, drv->LunID, |
39ccf9a6 | 2874 | sizeof(drv->LunID)) == 0) { |
7c832835 | 2875 | FOUND = 1; |
1da177e4 LT |
2876 | break; |
2877 | } | |
2878 | } | |
2879 | ||
7c832835 BH |
2880 | if (!FOUND) |
2881 | return 1; | |
1da177e4 | 2882 | |
7c832835 BH |
2883 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2884 | if (inq_buff == NULL) { | |
2885 | printk(KERN_WARNING "cciss: out of memory\n"); | |
7c832835 BH |
2886 | return 1; |
2887 | } | |
00988a35 | 2888 | if (h->cciss_read == CCISS_READ_10) { |
7b838bde | 2889 | cciss_read_capacity(h->ctlr, logvol, |
00988a35 MMOD |
2890 | &total_size, &block_size); |
2891 | } else { | |
7b838bde | 2892 | cciss_read_capacity_16(h->ctlr, logvol, |
00988a35 MMOD |
2893 | &total_size, &block_size); |
2894 | } | |
7b838bde | 2895 | cciss_geometry_inquiry(h->ctlr, logvol, total_size, block_size, |
7c832835 | 2896 | inq_buff, drv); |
1da177e4 | 2897 | |
e1defc4f | 2898 | blk_queue_logical_block_size(drv->queue, drv->block_size); |
1da177e4 LT |
2899 | set_capacity(disk, drv->nr_blocks); |
2900 | ||
1da177e4 LT |
2901 | kfree(inq_buff); |
2902 | return 0; | |
2903 | } | |
2904 | ||
1da177e4 LT |
2905 | /* |
2906 | * Map (physical) PCI mem into (virtual) kernel space | |
2907 | */ | |
2908 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2909 | { | |
7c832835 BH |
2910 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2911 | ulong page_offs = ((ulong) base) - page_base; | |
2912 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2913 | |
7c832835 | 2914 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2915 | } |
2916 | ||
7c832835 BH |
2917 | /* |
2918 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2919 | * the Q to wait for completion. | |
2920 | */ | |
2921 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
2922 | { |
2923 | CommandList_struct *c; | |
7c832835 | 2924 | |
8a3173de JA |
2925 | while (!hlist_empty(&h->reqQ)) { |
2926 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); | |
1da177e4 LT |
2927 | /* can't do anything if fifo is full */ |
2928 | if ((h->access.fifo_full(h))) { | |
2929 | printk(KERN_WARNING "cciss: fifo full\n"); | |
2930 | break; | |
2931 | } | |
2932 | ||
7c832835 | 2933 | /* Get the first entry from the Request Q */ |
8a3173de | 2934 | removeQ(c); |
1da177e4 | 2935 | h->Qdepth--; |
7c832835 BH |
2936 | |
2937 | /* Tell the controller execute command */ | |
1da177e4 | 2938 | h->access.submit_command(h, c); |
7c832835 BH |
2939 | |
2940 | /* Put job onto the completed Q */ | |
8a3173de | 2941 | addQ(&h->cmpQ, c); |
1da177e4 LT |
2942 | } |
2943 | } | |
7c832835 | 2944 | |
1da177e4 LT |
2945 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
2946 | /* Zeros out the error record and then resends the command back */ | |
2947 | /* to the controller */ | |
7c832835 | 2948 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
2949 | { |
2950 | /* erase the old error information */ | |
2951 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2952 | ||
2953 | /* add it to software queue and then send it to the controller */ | |
8a3173de | 2954 | addQ(&h->reqQ, c); |
1da177e4 | 2955 | h->Qdepth++; |
7c832835 | 2956 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
2957 | h->maxQsinceinit = h->Qdepth; |
2958 | ||
2959 | start_io(h); | |
2960 | } | |
a9925a06 | 2961 | |
1a614f50 SC |
2962 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
2963 | unsigned int msg_byte, unsigned int host_byte, | |
2964 | unsigned int driver_byte) | |
2965 | { | |
2966 | /* inverse of macros in scsi.h */ | |
2967 | return (scsi_status_byte & 0xff) | | |
2968 | ((msg_byte & 0xff) << 8) | | |
2969 | ((host_byte & 0xff) << 16) | | |
2970 | ((driver_byte & 0xff) << 24); | |
2971 | } | |
2972 | ||
0a9279cc MM |
2973 | static inline int evaluate_target_status(ctlr_info_t *h, |
2974 | CommandList_struct *cmd, int *retry_cmd) | |
03bbfee5 MMOD |
2975 | { |
2976 | unsigned char sense_key; | |
1a614f50 SC |
2977 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
2978 | int error_value; | |
2979 | ||
0a9279cc | 2980 | *retry_cmd = 0; |
1a614f50 SC |
2981 | /* If we get in here, it means we got "target status", that is, scsi status */ |
2982 | status_byte = cmd->err_info->ScsiStatus; | |
2983 | driver_byte = DRIVER_OK; | |
2984 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ | |
2985 | ||
2986 | if (blk_pc_request(cmd->rq)) | |
2987 | host_byte = DID_PASSTHROUGH; | |
2988 | else | |
2989 | host_byte = DID_OK; | |
2990 | ||
2991 | error_value = make_status_bytes(status_byte, msg_byte, | |
2992 | host_byte, driver_byte); | |
03bbfee5 | 2993 | |
1a614f50 | 2994 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
03bbfee5 MMOD |
2995 | if (!blk_pc_request(cmd->rq)) |
2996 | printk(KERN_WARNING "cciss: cmd %p " | |
2997 | "has SCSI Status 0x%x\n", | |
2998 | cmd, cmd->err_info->ScsiStatus); | |
1a614f50 | 2999 | return error_value; |
03bbfee5 MMOD |
3000 | } |
3001 | ||
3002 | /* check the sense key */ | |
3003 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
3004 | /* no status or recovered error */ | |
1a614f50 SC |
3005 | if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq)) |
3006 | error_value = 0; | |
03bbfee5 | 3007 | |
0a9279cc MM |
3008 | if (check_for_unit_attention(h, cmd)) { |
3009 | *retry_cmd = !blk_pc_request(cmd->rq); | |
3010 | return 0; | |
3011 | } | |
3012 | ||
03bbfee5 | 3013 | if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */ |
1a614f50 | 3014 | if (error_value != 0) |
03bbfee5 MMOD |
3015 | printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" |
3016 | " sense key = 0x%x\n", cmd, sense_key); | |
1a614f50 | 3017 | return error_value; |
03bbfee5 MMOD |
3018 | } |
3019 | ||
3020 | /* SG_IO or similar, copy sense data back */ | |
3021 | if (cmd->rq->sense) { | |
3022 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) | |
3023 | cmd->rq->sense_len = cmd->err_info->SenseLen; | |
3024 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, | |
3025 | cmd->rq->sense_len); | |
3026 | } else | |
3027 | cmd->rq->sense_len = 0; | |
3028 | ||
1a614f50 | 3029 | return error_value; |
03bbfee5 MMOD |
3030 | } |
3031 | ||
7c832835 | 3032 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
3033 | * buffers for the completed job. Note that this function does not need |
3034 | * to hold the hba/queue lock. | |
7c832835 BH |
3035 | */ |
3036 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
3037 | int timeout) | |
1da177e4 | 3038 | { |
1da177e4 | 3039 | int retry_cmd = 0; |
198b7660 MMOD |
3040 | struct request *rq = cmd->rq; |
3041 | ||
3042 | rq->errors = 0; | |
7c832835 | 3043 | |
1da177e4 | 3044 | if (timeout) |
1a614f50 | 3045 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
1da177e4 | 3046 | |
d38ae168 MMOD |
3047 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
3048 | goto after_error_processing; | |
7c832835 | 3049 | |
d38ae168 | 3050 | switch (cmd->err_info->CommandStatus) { |
d38ae168 | 3051 | case CMD_TARGET_STATUS: |
0a9279cc | 3052 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
d38ae168 MMOD |
3053 | break; |
3054 | case CMD_DATA_UNDERRUN: | |
03bbfee5 MMOD |
3055 | if (blk_fs_request(cmd->rq)) { |
3056 | printk(KERN_WARNING "cciss: cmd %p has" | |
3057 | " completed with data underrun " | |
3058 | "reported\n", cmd); | |
c3a4d78c | 3059 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
03bbfee5 | 3060 | } |
d38ae168 MMOD |
3061 | break; |
3062 | case CMD_DATA_OVERRUN: | |
03bbfee5 MMOD |
3063 | if (blk_fs_request(cmd->rq)) |
3064 | printk(KERN_WARNING "cciss: cmd %p has" | |
3065 | " completed with data overrun " | |
3066 | "reported\n", cmd); | |
d38ae168 MMOD |
3067 | break; |
3068 | case CMD_INVALID: | |
3069 | printk(KERN_WARNING "cciss: cmd %p is " | |
3070 | "reported invalid\n", cmd); | |
1a614f50 SC |
3071 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3072 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3073 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3074 | break; |
3075 | case CMD_PROTOCOL_ERR: | |
3076 | printk(KERN_WARNING "cciss: cmd %p has " | |
3077 | "protocol error \n", cmd); | |
1a614f50 SC |
3078 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3079 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3080 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3081 | break; |
3082 | case CMD_HARDWARE_ERR: | |
3083 | printk(KERN_WARNING "cciss: cmd %p had " | |
3084 | " hardware error\n", cmd); | |
1a614f50 SC |
3085 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3086 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3087 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3088 | break; |
3089 | case CMD_CONNECTION_LOST: | |
3090 | printk(KERN_WARNING "cciss: cmd %p had " | |
3091 | "connection lost\n", cmd); | |
1a614f50 SC |
3092 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3093 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3094 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3095 | break; |
3096 | case CMD_ABORTED: | |
3097 | printk(KERN_WARNING "cciss: cmd %p was " | |
3098 | "aborted\n", cmd); | |
1a614f50 SC |
3099 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3100 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3101 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
3102 | break; |
3103 | case CMD_ABORT_FAILED: | |
3104 | printk(KERN_WARNING "cciss: cmd %p reports " | |
3105 | "abort failed\n", cmd); | |
1a614f50 SC |
3106 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3107 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3108 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3109 | break; |
3110 | case CMD_UNSOLICITED_ABORT: | |
3111 | printk(KERN_WARNING "cciss%d: unsolicited " | |
3112 | "abort %p\n", h->ctlr, cmd); | |
3113 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
3114 | retry_cmd = 1; | |
3115 | printk(KERN_WARNING | |
3116 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
3117 | cmd->retry_count++; | |
3118 | } else | |
3119 | printk(KERN_WARNING | |
3120 | "cciss%d: %p retried too " | |
3121 | "many times\n", h->ctlr, cmd); | |
1a614f50 SC |
3122 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3123 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3124 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
3125 | break; |
3126 | case CMD_TIMEOUT: | |
3127 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
1a614f50 SC |
3128 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3129 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3130 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3131 | break; |
3132 | default: | |
3133 | printk(KERN_WARNING "cciss: cmd %p returned " | |
3134 | "unknown status %x\n", cmd, | |
3135 | cmd->err_info->CommandStatus); | |
1a614f50 SC |
3136 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3137 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3138 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
1da177e4 | 3139 | } |
d38ae168 MMOD |
3140 | |
3141 | after_error_processing: | |
3142 | ||
1da177e4 | 3143 | /* We need to return this command */ |
7c832835 BH |
3144 | if (retry_cmd) { |
3145 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 3146 | return; |
7c832835 | 3147 | } |
03bbfee5 | 3148 | cmd->rq->completion_data = cmd; |
a9925a06 | 3149 | blk_complete_request(cmd->rq); |
1da177e4 LT |
3150 | } |
3151 | ||
0c2b3908 MM |
3152 | static inline u32 cciss_tag_contains_index(u32 tag) |
3153 | { | |
5e216153 | 3154 | #define DIRECT_LOOKUP_BIT 0x10 |
0c2b3908 MM |
3155 | return tag & DIRECT_LOOKUP_BIT; |
3156 | } | |
3157 | ||
3158 | static inline u32 cciss_tag_to_index(u32 tag) | |
3159 | { | |
5e216153 | 3160 | #define DIRECT_LOOKUP_SHIFT 5 |
0c2b3908 MM |
3161 | return tag >> DIRECT_LOOKUP_SHIFT; |
3162 | } | |
3163 | ||
3164 | static inline u32 cciss_tag_discard_error_bits(u32 tag) | |
3165 | { | |
3166 | #define CCISS_ERROR_BITS 0x03 | |
3167 | return tag & ~CCISS_ERROR_BITS; | |
3168 | } | |
3169 | ||
3170 | static inline void cciss_mark_tag_indexed(u32 *tag) | |
3171 | { | |
3172 | *tag |= DIRECT_LOOKUP_BIT; | |
3173 | } | |
3174 | ||
3175 | static inline void cciss_set_tag_index(u32 *tag, u32 index) | |
3176 | { | |
3177 | *tag |= (index << DIRECT_LOOKUP_SHIFT); | |
3178 | } | |
3179 | ||
7c832835 BH |
3180 | /* |
3181 | * Get a request and submit it to the controller. | |
1da177e4 | 3182 | */ |
165125e1 | 3183 | static void do_cciss_request(struct request_queue *q) |
1da177e4 | 3184 | { |
7c832835 | 3185 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 3186 | CommandList_struct *c; |
00988a35 MMOD |
3187 | sector_t start_blk; |
3188 | int seg; | |
1da177e4 LT |
3189 | struct request *creq; |
3190 | u64bit temp64; | |
5c07a311 DB |
3191 | struct scatterlist *tmp_sg; |
3192 | SGDescriptor_struct *curr_sg; | |
1da177e4 LT |
3193 | drive_info_struct *drv; |
3194 | int i, dir; | |
5c07a311 DB |
3195 | int sg_index = 0; |
3196 | int chained = 0; | |
1da177e4 LT |
3197 | |
3198 | /* We call start_io here in case there is a command waiting on the | |
3199 | * queue that has not been sent. | |
7c832835 | 3200 | */ |
1da177e4 LT |
3201 | if (blk_queue_plugged(q)) |
3202 | goto startio; | |
3203 | ||
7c832835 | 3204 | queue: |
9934c8c0 | 3205 | creq = blk_peek_request(q); |
1da177e4 LT |
3206 | if (!creq) |
3207 | goto startio; | |
3208 | ||
5c07a311 | 3209 | BUG_ON(creq->nr_phys_segments > h->maxsgentries); |
1da177e4 | 3210 | |
7c832835 | 3211 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
3212 | goto full; |
3213 | ||
9934c8c0 | 3214 | blk_start_request(creq); |
1da177e4 | 3215 | |
5c07a311 | 3216 | tmp_sg = h->scatter_list[c->cmdindex]; |
1da177e4 LT |
3217 | spin_unlock_irq(q->queue_lock); |
3218 | ||
3219 | c->cmd_type = CMD_RWREQ; | |
3220 | c->rq = creq; | |
7c832835 BH |
3221 | |
3222 | /* fill in the request */ | |
1da177e4 | 3223 | drv = creq->rq_disk->private_data; |
b028461d | 3224 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
33079b21 MM |
3225 | /* got command from pool, so use the command block index instead */ |
3226 | /* for direct lookups. */ | |
3227 | /* The first 2 bits are reserved for controller error reporting. */ | |
0c2b3908 MM |
3228 | cciss_set_tag_index(&c->Header.Tag.lower, c->cmdindex); |
3229 | cciss_mark_tag_indexed(&c->Header.Tag.lower); | |
39ccf9a6 | 3230 | memcpy(&c->Header.LUN, drv->LunID, sizeof(drv->LunID)); |
b028461d | 3231 | c->Request.CDBLen = 10; /* 12 byte commands not in FW yet; */ |
3232 | c->Request.Type.Type = TYPE_CMD; /* It is a command. */ | |
7c832835 BH |
3233 | c->Request.Type.Attribute = ATTR_SIMPLE; |
3234 | c->Request.Type.Direction = | |
a52de245 | 3235 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
b028461d | 3236 | c->Request.Timeout = 0; /* Don't time out */ |
7c832835 | 3237 | c->Request.CDB[0] = |
00988a35 | 3238 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
83096ebf | 3239 | start_blk = blk_rq_pos(creq); |
1da177e4 | 3240 | #ifdef CCISS_DEBUG |
83096ebf TH |
3241 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", |
3242 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); | |
7c832835 | 3243 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3244 | |
5c07a311 | 3245 | sg_init_table(tmp_sg, h->maxsgentries); |
1da177e4 LT |
3246 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
3247 | ||
7c832835 | 3248 | /* get the DMA records for the setup */ |
1da177e4 LT |
3249 | if (c->Request.Type.Direction == XFER_READ) |
3250 | dir = PCI_DMA_FROMDEVICE; | |
3251 | else | |
3252 | dir = PCI_DMA_TODEVICE; | |
3253 | ||
5c07a311 DB |
3254 | curr_sg = c->SG; |
3255 | sg_index = 0; | |
3256 | chained = 0; | |
3257 | ||
7c832835 | 3258 | for (i = 0; i < seg; i++) { |
5c07a311 DB |
3259 | if (((sg_index+1) == (h->max_cmd_sgentries)) && |
3260 | !chained && ((seg - i) > 1)) { | |
5c07a311 | 3261 | /* Point to next chain block. */ |
dccc9b56 | 3262 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
5c07a311 DB |
3263 | sg_index = 0; |
3264 | chained = 1; | |
3265 | } | |
3266 | curr_sg[sg_index].Len = tmp_sg[i].length; | |
45711f1a | 3267 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
5c07a311 DB |
3268 | tmp_sg[i].offset, |
3269 | tmp_sg[i].length, dir); | |
3270 | curr_sg[sg_index].Addr.lower = temp64.val32.lower; | |
3271 | curr_sg[sg_index].Addr.upper = temp64.val32.upper; | |
3272 | curr_sg[sg_index].Ext = 0; /* we are not chaining */ | |
5c07a311 | 3273 | ++sg_index; |
1da177e4 | 3274 | } |
d45033ef SC |
3275 | if (chained) |
3276 | cciss_map_sg_chain_block(h, c, h->cmd_sg_list[c->cmdindex], | |
3277 | (seg - (h->max_cmd_sgentries - 1)) * | |
3278 | sizeof(SGDescriptor_struct)); | |
5c07a311 | 3279 | |
7c832835 BH |
3280 | /* track how many SG entries we are using */ |
3281 | if (seg > h->maxSG) | |
3282 | h->maxSG = seg; | |
1da177e4 LT |
3283 | |
3284 | #ifdef CCISS_DEBUG | |
5c07a311 DB |
3285 | printk(KERN_DEBUG "cciss: Submitting %ld sectors in %d segments " |
3286 | "chained[%d]\n", | |
3287 | blk_rq_sectors(creq), seg, chained); | |
7c832835 | 3288 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3289 | |
5e216153 MM |
3290 | c->Header.SGTotal = seg + chained; |
3291 | if (seg <= h->max_cmd_sgentries) | |
3292 | c->Header.SGList = c->Header.SGTotal; | |
3293 | else | |
5c07a311 | 3294 | c->Header.SGList = h->max_cmd_sgentries; |
5e216153 | 3295 | set_performant_mode(h, c); |
5c07a311 | 3296 | |
03bbfee5 MMOD |
3297 | if (likely(blk_fs_request(creq))) { |
3298 | if(h->cciss_read == CCISS_READ_10) { | |
3299 | c->Request.CDB[1] = 0; | |
b028461d | 3300 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; /* MSB */ |
03bbfee5 MMOD |
3301 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; |
3302 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
3303 | c->Request.CDB[5] = start_blk & 0xff; | |
b028461d | 3304 | c->Request.CDB[6] = 0; /* (sect >> 24) & 0xff; MSB */ |
83096ebf TH |
3305 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
3306 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3307 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
3308 | } else { | |
582539e5 RD |
3309 | u32 upper32 = upper_32_bits(start_blk); |
3310 | ||
03bbfee5 MMOD |
3311 | c->Request.CDBLen = 16; |
3312 | c->Request.CDB[1]= 0; | |
b028461d | 3313 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; /* MSB */ |
582539e5 RD |
3314 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; |
3315 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; | |
3316 | c->Request.CDB[5]= upper32 & 0xff; | |
03bbfee5 MMOD |
3317 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
3318 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
3319 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
3320 | c->Request.CDB[9]= start_blk & 0xff; | |
83096ebf TH |
3321 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
3322 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; | |
3323 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; | |
3324 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3325 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
3326 | } | |
3327 | } else if (blk_pc_request(creq)) { | |
3328 | c->Request.CDBLen = creq->cmd_len; | |
3329 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); | |
00988a35 | 3330 | } else { |
03bbfee5 MMOD |
3331 | printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); |
3332 | BUG(); | |
00988a35 | 3333 | } |
1da177e4 LT |
3334 | |
3335 | spin_lock_irq(q->queue_lock); | |
3336 | ||
8a3173de | 3337 | addQ(&h->reqQ, c); |
1da177e4 | 3338 | h->Qdepth++; |
7c832835 BH |
3339 | if (h->Qdepth > h->maxQsinceinit) |
3340 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
3341 | |
3342 | goto queue; | |
00988a35 | 3343 | full: |
1da177e4 | 3344 | blk_stop_queue(q); |
00988a35 | 3345 | startio: |
1da177e4 LT |
3346 | /* We will already have the driver lock here so not need |
3347 | * to lock it. | |
7c832835 | 3348 | */ |
1da177e4 LT |
3349 | start_io(h); |
3350 | } | |
3351 | ||
3da8b713 | 3352 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
3353 | { | |
3da8b713 | 3354 | return h->access.command_completed(h); |
3da8b713 | 3355 | } |
3356 | ||
3357 | static inline int interrupt_pending(ctlr_info_t *h) | |
3358 | { | |
3da8b713 | 3359 | return h->access.intr_pending(h); |
3da8b713 | 3360 | } |
3361 | ||
3362 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
3363 | { | |
2cf3af1c MM |
3364 | return !(h->msi_vector || h->msix_vector) && |
3365 | ((h->access.intr_pending(h) == 0) || | |
3366 | (h->interrupts_enabled == 0)); | |
3da8b713 | 3367 | } |
3368 | ||
0c2b3908 MM |
3369 | static inline int bad_tag(ctlr_info_t *h, u32 tag_index, |
3370 | u32 raw_tag) | |
1da177e4 | 3371 | { |
0c2b3908 MM |
3372 | if (unlikely(tag_index >= h->nr_cmds)) { |
3373 | dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); | |
3374 | return 1; | |
3375 | } | |
3376 | return 0; | |
3377 | } | |
3378 | ||
3379 | static inline void finish_cmd(ctlr_info_t *h, CommandList_struct *c, | |
3380 | u32 raw_tag) | |
3381 | { | |
3382 | removeQ(c); | |
3383 | if (likely(c->cmd_type == CMD_RWREQ)) | |
3384 | complete_command(h, c, 0); | |
3385 | else if (c->cmd_type == CMD_IOCTL_PEND) | |
3386 | complete(c->waiting); | |
3387 | #ifdef CONFIG_CISS_SCSI_TAPE | |
3388 | else if (c->cmd_type == CMD_SCSI) | |
3389 | complete_scsi_command(c, 0, raw_tag); | |
3390 | #endif | |
3391 | } | |
3392 | ||
29979a71 MM |
3393 | static inline u32 next_command(ctlr_info_t *h) |
3394 | { | |
3395 | u32 a; | |
3396 | ||
3397 | if (unlikely(h->transMethod != CFGTBL_Trans_Performant)) | |
3398 | return h->access.command_completed(h); | |
3399 | ||
3400 | if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { | |
3401 | a = *(h->reply_pool_head); /* Next cmd in ring buffer */ | |
3402 | (h->reply_pool_head)++; | |
3403 | h->commands_outstanding--; | |
3404 | } else { | |
3405 | a = FIFO_EMPTY; | |
3406 | } | |
3407 | /* Check for wraparound */ | |
3408 | if (h->reply_pool_head == (h->reply_pool + h->max_commands)) { | |
3409 | h->reply_pool_head = h->reply_pool; | |
3410 | h->reply_pool_wraparound ^= 1; | |
3411 | } | |
3412 | return a; | |
3413 | } | |
3414 | ||
0c2b3908 MM |
3415 | /* process completion of an indexed ("direct lookup") command */ |
3416 | static inline u32 process_indexed_cmd(ctlr_info_t *h, u32 raw_tag) | |
3417 | { | |
3418 | u32 tag_index; | |
1da177e4 | 3419 | CommandList_struct *c; |
0c2b3908 MM |
3420 | |
3421 | tag_index = cciss_tag_to_index(raw_tag); | |
3422 | if (bad_tag(h, tag_index, raw_tag)) | |
5e216153 | 3423 | return next_command(h); |
0c2b3908 MM |
3424 | c = h->cmd_pool + tag_index; |
3425 | finish_cmd(h, c, raw_tag); | |
5e216153 | 3426 | return next_command(h); |
0c2b3908 MM |
3427 | } |
3428 | ||
3429 | /* process completion of a non-indexed command */ | |
3430 | static inline u32 process_nonindexed_cmd(ctlr_info_t *h, u32 raw_tag) | |
3431 | { | |
3432 | u32 tag; | |
3433 | CommandList_struct *c = NULL; | |
3434 | struct hlist_node *tmp; | |
3435 | __u32 busaddr_masked, tag_masked; | |
3436 | ||
3437 | tag = cciss_tag_discard_error_bits(raw_tag); | |
3438 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { | |
3439 | busaddr_masked = cciss_tag_discard_error_bits(c->busaddr); | |
3440 | tag_masked = cciss_tag_discard_error_bits(tag); | |
3441 | if (busaddr_masked == tag_masked) { | |
3442 | finish_cmd(h, c, raw_tag); | |
5e216153 | 3443 | return next_command(h); |
0c2b3908 MM |
3444 | } |
3445 | } | |
3446 | bad_tag(h, h->nr_cmds + 1, raw_tag); | |
5e216153 | 3447 | return next_command(h); |
0c2b3908 MM |
3448 | } |
3449 | ||
3450 | static irqreturn_t do_cciss_intx(int irq, void *dev_id) | |
3451 | { | |
3452 | ctlr_info_t *h = dev_id; | |
1da177e4 | 3453 | unsigned long flags; |
0c2b3908 | 3454 | u32 raw_tag; |
1da177e4 | 3455 | |
3da8b713 | 3456 | if (interrupt_not_for_us(h)) |
1da177e4 | 3457 | return IRQ_NONE; |
1da177e4 LT |
3458 | /* |
3459 | * If there are completed commands in the completion queue, | |
3460 | * we had better do something about it. | |
3461 | */ | |
3462 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 3463 | while (interrupt_pending(h)) { |
0c2b3908 MM |
3464 | raw_tag = get_next_completion(h); |
3465 | while (raw_tag != FIFO_EMPTY) { | |
3466 | if (cciss_tag_contains_index(raw_tag)) | |
3467 | raw_tag = process_indexed_cmd(h, raw_tag); | |
3468 | else | |
3469 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
3470 | } | |
3471 | } | |
33079b21 | 3472 | |
0c2b3908 MM |
3473 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
3474 | return IRQ_HANDLED; | |
3475 | } | |
33079b21 | 3476 | |
0c2b3908 MM |
3477 | /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never |
3478 | * check the interrupt pending register because it is not set. | |
3479 | */ | |
3480 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id) | |
3481 | { | |
3482 | ctlr_info_t *h = dev_id; | |
3483 | unsigned long flags; | |
3484 | u32 raw_tag; | |
8a3173de | 3485 | |
0c2b3908 MM |
3486 | if (interrupt_not_for_us(h)) |
3487 | return IRQ_NONE; | |
3488 | /* | |
3489 | * If there are completed commands in the completion queue, | |
3490 | * we had better do something about it. | |
3491 | */ | |
3492 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3493 | raw_tag = get_next_completion(h); | |
3494 | while (raw_tag != FIFO_EMPTY) { | |
3495 | if (cciss_tag_contains_index(raw_tag)) | |
3496 | raw_tag = process_indexed_cmd(h, raw_tag); | |
3497 | else | |
3498 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
1da177e4 LT |
3499 | } |
3500 | ||
1da177e4 LT |
3501 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
3502 | return IRQ_HANDLED; | |
3503 | } | |
7c832835 | 3504 | |
b368c9dd AP |
3505 | /** |
3506 | * add_to_scan_list() - add controller to rescan queue | |
3507 | * @h: Pointer to the controller. | |
3508 | * | |
3509 | * Adds the controller to the rescan queue if not already on the queue. | |
3510 | * | |
3511 | * returns 1 if added to the queue, 0 if skipped (could be on the | |
3512 | * queue already, or the controller could be initializing or shutting | |
3513 | * down). | |
3514 | **/ | |
3515 | static int add_to_scan_list(struct ctlr_info *h) | |
3516 | { | |
3517 | struct ctlr_info *test_h; | |
3518 | int found = 0; | |
3519 | int ret = 0; | |
3520 | ||
3521 | if (h->busy_initializing) | |
3522 | return 0; | |
3523 | ||
3524 | if (!mutex_trylock(&h->busy_shutting_down)) | |
3525 | return 0; | |
3526 | ||
3527 | mutex_lock(&scan_mutex); | |
3528 | list_for_each_entry(test_h, &scan_q, scan_list) { | |
3529 | if (test_h == h) { | |
3530 | found = 1; | |
3531 | break; | |
3532 | } | |
3533 | } | |
3534 | if (!found && !h->busy_scanning) { | |
3535 | INIT_COMPLETION(h->scan_wait); | |
3536 | list_add_tail(&h->scan_list, &scan_q); | |
3537 | ret = 1; | |
3538 | } | |
3539 | mutex_unlock(&scan_mutex); | |
3540 | mutex_unlock(&h->busy_shutting_down); | |
3541 | ||
3542 | return ret; | |
3543 | } | |
3544 | ||
3545 | /** | |
3546 | * remove_from_scan_list() - remove controller from rescan queue | |
3547 | * @h: Pointer to the controller. | |
3548 | * | |
3549 | * Removes the controller from the rescan queue if present. Blocks if | |
fd8489cf SC |
3550 | * the controller is currently conducting a rescan. The controller |
3551 | * can be in one of three states: | |
3552 | * 1. Doesn't need a scan | |
3553 | * 2. On the scan list, but not scanning yet (we remove it) | |
3554 | * 3. Busy scanning (and not on the list). In this case we want to wait for | |
3555 | * the scan to complete to make sure the scanning thread for this | |
3556 | * controller is completely idle. | |
b368c9dd AP |
3557 | **/ |
3558 | static void remove_from_scan_list(struct ctlr_info *h) | |
3559 | { | |
3560 | struct ctlr_info *test_h, *tmp_h; | |
b368c9dd AP |
3561 | |
3562 | mutex_lock(&scan_mutex); | |
3563 | list_for_each_entry_safe(test_h, tmp_h, &scan_q, scan_list) { | |
fd8489cf | 3564 | if (test_h == h) { /* state 2. */ |
b368c9dd AP |
3565 | list_del(&h->scan_list); |
3566 | complete_all(&h->scan_wait); | |
3567 | mutex_unlock(&scan_mutex); | |
3568 | return; | |
3569 | } | |
3570 | } | |
fd8489cf SC |
3571 | if (h->busy_scanning) { /* state 3. */ |
3572 | mutex_unlock(&scan_mutex); | |
b368c9dd | 3573 | wait_for_completion(&h->scan_wait); |
fd8489cf SC |
3574 | } else { /* state 1, nothing to do. */ |
3575 | mutex_unlock(&scan_mutex); | |
3576 | } | |
b368c9dd AP |
3577 | } |
3578 | ||
3579 | /** | |
3580 | * scan_thread() - kernel thread used to rescan controllers | |
3581 | * @data: Ignored. | |
3582 | * | |
3583 | * A kernel thread used scan for drive topology changes on | |
3584 | * controllers. The thread processes only one controller at a time | |
3585 | * using a queue. Controllers are added to the queue using | |
3586 | * add_to_scan_list() and removed from the queue either after done | |
3587 | * processing or using remove_from_scan_list(). | |
3588 | * | |
3589 | * returns 0. | |
3590 | **/ | |
0a9279cc MM |
3591 | static int scan_thread(void *data) |
3592 | { | |
b368c9dd | 3593 | struct ctlr_info *h; |
0a9279cc | 3594 | |
b368c9dd AP |
3595 | while (1) { |
3596 | set_current_state(TASK_INTERRUPTIBLE); | |
3597 | schedule(); | |
0a9279cc MM |
3598 | if (kthread_should_stop()) |
3599 | break; | |
b368c9dd AP |
3600 | |
3601 | while (1) { | |
3602 | mutex_lock(&scan_mutex); | |
3603 | if (list_empty(&scan_q)) { | |
3604 | mutex_unlock(&scan_mutex); | |
3605 | break; | |
3606 | } | |
3607 | ||
3608 | h = list_entry(scan_q.next, | |
3609 | struct ctlr_info, | |
3610 | scan_list); | |
3611 | list_del(&h->scan_list); | |
3612 | h->busy_scanning = 1; | |
3613 | mutex_unlock(&scan_mutex); | |
3614 | ||
d06dfbd2 SC |
3615 | rebuild_lun_table(h, 0, 0); |
3616 | complete_all(&h->scan_wait); | |
3617 | mutex_lock(&scan_mutex); | |
3618 | h->busy_scanning = 0; | |
3619 | mutex_unlock(&scan_mutex); | |
b368c9dd | 3620 | } |
0a9279cc | 3621 | } |
b368c9dd | 3622 | |
0a9279cc MM |
3623 | return 0; |
3624 | } | |
3625 | ||
3626 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) | |
3627 | { | |
3628 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) | |
3629 | return 0; | |
3630 | ||
3631 | switch (c->err_info->SenseInfo[12]) { | |
3632 | case STATE_CHANGED: | |
3633 | printk(KERN_WARNING "cciss%d: a state change " | |
3634 | "detected, command retried\n", h->ctlr); | |
3635 | return 1; | |
3636 | break; | |
3637 | case LUN_FAILED: | |
3638 | printk(KERN_WARNING "cciss%d: LUN failure " | |
3639 | "detected, action required\n", h->ctlr); | |
3640 | return 1; | |
3641 | break; | |
3642 | case REPORT_LUNS_CHANGED: | |
3643 | printk(KERN_WARNING "cciss%d: report LUN data " | |
3644 | "changed\n", h->ctlr); | |
da002184 SC |
3645 | /* |
3646 | * Here, we could call add_to_scan_list and wake up the scan thread, | |
3647 | * except that it's quite likely that we will get more than one | |
3648 | * REPORT_LUNS_CHANGED condition in quick succession, which means | |
3649 | * that those which occur after the first one will likely happen | |
3650 | * *during* the scan_thread's rescan. And the rescan code is not | |
3651 | * robust enough to restart in the middle, undoing what it has already | |
3652 | * done, and it's not clear that it's even possible to do this, since | |
3653 | * part of what it does is notify the block layer, which starts | |
3654 | * doing it's own i/o to read partition tables and so on, and the | |
3655 | * driver doesn't have visibility to know what might need undoing. | |
3656 | * In any event, if possible, it is horribly complicated to get right | |
3657 | * so we just don't do it for now. | |
3658 | * | |
3659 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. | |
3660 | */ | |
0a9279cc MM |
3661 | return 1; |
3662 | break; | |
3663 | case POWER_OR_RESET: | |
3664 | printk(KERN_WARNING "cciss%d: a power on " | |
3665 | "or device reset detected\n", h->ctlr); | |
3666 | return 1; | |
3667 | break; | |
3668 | case UNIT_ATTENTION_CLEARED: | |
3669 | printk(KERN_WARNING "cciss%d: unit attention " | |
3670 | "cleared by another initiator\n", h->ctlr); | |
3671 | return 1; | |
3672 | break; | |
3673 | default: | |
3674 | printk(KERN_WARNING "cciss%d: unknown " | |
3675 | "unit attention detected\n", h->ctlr); | |
3676 | return 1; | |
3677 | } | |
3678 | } | |
3679 | ||
7c832835 | 3680 | /* |
d14c4ab5 | 3681 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 3682 | * the io functions. |
7c832835 | 3683 | * This is for debug only. |
1da177e4 LT |
3684 | */ |
3685 | #ifdef CCISS_DEBUG | |
7c832835 | 3686 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 LT |
3687 | { |
3688 | int i; | |
3689 | char temp_name[17]; | |
3690 | ||
3691 | printk("Controller Configuration information\n"); | |
3692 | printk("------------------------------------\n"); | |
7c832835 | 3693 | for (i = 0; i < 4; i++) |
1da177e4 | 3694 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
3695 | temp_name[4] = '\0'; |
3696 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 3697 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
3698 | printk(" Transport methods supported = 0x%x\n", |
3699 | readl(&(tb->TransportSupport))); | |
3700 | printk(" Transport methods active = 0x%x\n", | |
3701 | readl(&(tb->TransportActive))); | |
3702 | printk(" Requested transport Method = 0x%x\n", | |
3703 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 3704 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 3705 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 3706 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
3707 | readl(&(tb->HostWrite.CoalIntCount))); |
3708 | printk(" Max outstanding commands = 0x%d\n", | |
3709 | readl(&(tb->CmdsOutMax))); | |
3710 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
3711 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
3712 | temp_name[i] = readb(&(tb->ServerName[i])); |
3713 | temp_name[16] = '\0'; | |
3714 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 3715 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
1da177e4 | 3716 | } |
7c832835 | 3717 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3718 | |
7c832835 | 3719 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
3720 | { |
3721 | int i, offset, mem_type, bar_type; | |
7c832835 | 3722 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
3723 | return 0; |
3724 | offset = 0; | |
7c832835 BH |
3725 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
3726 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
3727 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
3728 | offset += 4; | |
3729 | else { | |
3730 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 3731 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 3732 | switch (mem_type) { |
7c832835 BH |
3733 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
3734 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
3735 | offset += 4; /* 32 bit */ | |
3736 | break; | |
3737 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
3738 | offset += 8; | |
3739 | break; | |
3740 | default: /* reserved in PCI 2.2 */ | |
3741 | printk(KERN_WARNING | |
3742 | "Base address is invalid\n"); | |
3743 | return -1; | |
1da177e4 LT |
3744 | break; |
3745 | } | |
3746 | } | |
7c832835 BH |
3747 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
3748 | return i + 1; | |
1da177e4 LT |
3749 | } |
3750 | return -1; | |
3751 | } | |
3752 | ||
5e216153 MM |
3753 | /* Fill in bucket_map[], given nsgs (the max number of |
3754 | * scatter gather elements supported) and bucket[], | |
3755 | * which is an array of 8 integers. The bucket[] array | |
3756 | * contains 8 different DMA transfer sizes (in 16 | |
3757 | * byte increments) which the controller uses to fetch | |
3758 | * commands. This function fills in bucket_map[], which | |
3759 | * maps a given number of scatter gather elements to one of | |
3760 | * the 8 DMA transfer sizes. The point of it is to allow the | |
3761 | * controller to only do as much DMA as needed to fetch the | |
3762 | * command, with the DMA transfer size encoded in the lower | |
3763 | * bits of the command address. | |
3764 | */ | |
3765 | static void calc_bucket_map(int bucket[], int num_buckets, | |
3766 | int nsgs, int *bucket_map) | |
3767 | { | |
3768 | int i, j, b, size; | |
3769 | ||
3770 | /* even a command with 0 SGs requires 4 blocks */ | |
3771 | #define MINIMUM_TRANSFER_BLOCKS 4 | |
3772 | #define NUM_BUCKETS 8 | |
3773 | /* Note, bucket_map must have nsgs+1 entries. */ | |
3774 | for (i = 0; i <= nsgs; i++) { | |
3775 | /* Compute size of a command with i SG entries */ | |
3776 | size = i + MINIMUM_TRANSFER_BLOCKS; | |
3777 | b = num_buckets; /* Assume the biggest bucket */ | |
3778 | /* Find the bucket that is just big enough */ | |
3779 | for (j = 0; j < 8; j++) { | |
3780 | if (bucket[j] >= size) { | |
3781 | b = j; | |
3782 | break; | |
3783 | } | |
3784 | } | |
3785 | /* for a command with i SG entries, use bucket b. */ | |
3786 | bucket_map[i] = b; | |
3787 | } | |
3788 | } | |
3789 | ||
3790 | static void | |
3791 | cciss_put_controller_into_performant_mode(ctlr_info_t *h) | |
3792 | { | |
3793 | int l = 0; | |
3794 | __u32 trans_support; | |
3795 | __u32 trans_offset; | |
3796 | /* | |
3797 | * 5 = 1 s/g entry or 4k | |
3798 | * 6 = 2 s/g entry or 8k | |
3799 | * 8 = 4 s/g entry or 16k | |
3800 | * 10 = 6 s/g entry or 24k | |
3801 | */ | |
3802 | int bft[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4}; | |
3803 | unsigned long register_value; | |
3804 | ||
3805 | BUILD_BUG_ON(28 > MAXSGENTRIES + 4); | |
3806 | ||
3807 | /* Attempt to put controller into performant mode if supported */ | |
3808 | /* Does board support performant mode? */ | |
3809 | trans_support = readl(&(h->cfgtable->TransportSupport)); | |
3810 | if (!(trans_support & PERFORMANT_MODE)) | |
3811 | return; | |
3812 | ||
3813 | printk(KERN_WARNING "cciss%d: Placing controller into " | |
3814 | "performant mode\n", h->ctlr); | |
3815 | /* Performant mode demands commands on a 32 byte boundary | |
3816 | * pci_alloc_consistent aligns on page boundarys already. | |
3817 | * Just need to check if divisible by 32 | |
3818 | */ | |
3819 | if ((sizeof(CommandList_struct) % 32) != 0) { | |
3820 | printk(KERN_WARNING "%s %d %s\n", | |
3821 | "cciss info: command size[", | |
3822 | (int)sizeof(CommandList_struct), | |
3823 | "] not divisible by 32, no performant mode..\n"); | |
3824 | return; | |
3825 | } | |
3826 | ||
3827 | /* Performant mode ring buffer and supporting data structures */ | |
3828 | h->reply_pool = (__u64 *)pci_alloc_consistent( | |
3829 | h->pdev, h->max_commands * sizeof(__u64), | |
3830 | &(h->reply_pool_dhandle)); | |
3831 | ||
3832 | /* Need a block fetch table for performant mode */ | |
3833 | h->blockFetchTable = kmalloc(((h->maxsgentries+1) * | |
3834 | sizeof(__u32)), GFP_KERNEL); | |
3835 | ||
3836 | if ((h->reply_pool == NULL) || (h->blockFetchTable == NULL)) | |
3837 | goto clean_up; | |
3838 | ||
3839 | h->reply_pool_wraparound = 1; /* spec: init to 1 */ | |
3840 | ||
3841 | /* Controller spec: zero out this buffer. */ | |
3842 | memset(h->reply_pool, 0, h->max_commands * sizeof(__u64)); | |
3843 | h->reply_pool_head = h->reply_pool; | |
3844 | ||
3845 | trans_offset = readl(&(h->cfgtable->TransMethodOffset)); | |
3846 | calc_bucket_map(bft, ARRAY_SIZE(bft), h->maxsgentries, | |
3847 | h->blockFetchTable); | |
3848 | writel(bft[0], &h->transtable->BlockFetch0); | |
3849 | writel(bft[1], &h->transtable->BlockFetch1); | |
3850 | writel(bft[2], &h->transtable->BlockFetch2); | |
3851 | writel(bft[3], &h->transtable->BlockFetch3); | |
3852 | writel(bft[4], &h->transtable->BlockFetch4); | |
3853 | writel(bft[5], &h->transtable->BlockFetch5); | |
3854 | writel(bft[6], &h->transtable->BlockFetch6); | |
3855 | writel(bft[7], &h->transtable->BlockFetch7); | |
3856 | ||
3857 | /* size of controller ring buffer */ | |
3858 | writel(h->max_commands, &h->transtable->RepQSize); | |
3859 | writel(1, &h->transtable->RepQCount); | |
3860 | writel(0, &h->transtable->RepQCtrAddrLow32); | |
3861 | writel(0, &h->transtable->RepQCtrAddrHigh32); | |
3862 | writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32); | |
3863 | writel(0, &h->transtable->RepQAddr0High32); | |
3864 | writel(CFGTBL_Trans_Performant, | |
3865 | &(h->cfgtable->HostWrite.TransportRequest)); | |
3866 | ||
3867 | h->transMethod = CFGTBL_Trans_Performant; | |
3868 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
3869 | /* under certain very rare conditions, this can take awhile. | |
3870 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3871 | * as we enter this code.) */ | |
3872 | for (l = 0; l < MAX_CONFIG_WAIT; l++) { | |
3873 | register_value = readl(h->vaddr + SA5_DOORBELL); | |
3874 | if (!(register_value & CFGTBL_ChangeReq)) | |
3875 | break; | |
3876 | /* delay and try again */ | |
3877 | set_current_state(TASK_INTERRUPTIBLE); | |
3878 | schedule_timeout(10); | |
3879 | } | |
3880 | register_value = readl(&(h->cfgtable->TransportActive)); | |
3881 | if (!(register_value & CFGTBL_Trans_Performant)) { | |
3882 | printk(KERN_WARNING "cciss: unable to get board into" | |
3883 | " performant mode\n"); | |
3884 | return; | |
3885 | } | |
3886 | ||
3887 | /* Change the access methods to the performant access methods */ | |
3888 | h->access = SA5_performant_access; | |
3889 | ||
3890 | return; | |
3891 | clean_up: | |
3892 | kfree(h->blockFetchTable); | |
3893 | if (h->reply_pool) | |
3894 | pci_free_consistent(h->pdev, | |
3895 | h->max_commands * sizeof(__u64), | |
3896 | h->reply_pool, | |
3897 | h->reply_pool_dhandle); | |
3898 | return; | |
3899 | ||
3900 | } /* cciss_put_controller_into_performant_mode */ | |
3901 | ||
fb86a35b MM |
3902 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
3903 | * controllers that are capable. If not, we use IO-APIC mode. | |
3904 | */ | |
3905 | ||
7c832835 BH |
3906 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
3907 | struct pci_dev *pdev, __u32 board_id) | |
fb86a35b MM |
3908 | { |
3909 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3910 | int err; |
3911 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
3912 | {0, 2}, {0, 3} | |
3913 | }; | |
fb86a35b MM |
3914 | |
3915 | /* Some boards advertise MSI but don't really support it */ | |
3916 | if ((board_id == 0x40700E11) || | |
7c832835 BH |
3917 | (board_id == 0x40800E11) || |
3918 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
fb86a35b MM |
3919 | goto default_int_mode; |
3920 | ||
7c832835 BH |
3921 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
3922 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); | |
3923 | if (!err) { | |
3924 | c->intr[0] = cciss_msix_entries[0].vector; | |
3925 | c->intr[1] = cciss_msix_entries[1].vector; | |
3926 | c->intr[2] = cciss_msix_entries[2].vector; | |
3927 | c->intr[3] = cciss_msix_entries[3].vector; | |
3928 | c->msix_vector = 1; | |
3929 | return; | |
3930 | } | |
3931 | if (err > 0) { | |
3932 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
3933 | "available\n", err); | |
1ecb9c0f | 3934 | goto default_int_mode; |
7c832835 BH |
3935 | } else { |
3936 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
3937 | err); | |
1ecb9c0f | 3938 | goto default_int_mode; |
7c832835 BH |
3939 | } |
3940 | } | |
3941 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
3942 | if (!pci_enable_msi(pdev)) { | |
7c832835 | 3943 | c->msi_vector = 1; |
7c832835 BH |
3944 | } else { |
3945 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
7c832835 BH |
3946 | } |
3947 | } | |
1ecb9c0f | 3948 | default_int_mode: |
7c832835 | 3949 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 3950 | /* if we get here we're going to use the default interrupt mode */ |
5e216153 | 3951 | c->intr[PERF_MODE_INT] = pdev->irq; |
fb86a35b MM |
3952 | return; |
3953 | } | |
3954 | ||
7d1fd970 | 3955 | static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
1da177e4 LT |
3956 | { |
3957 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
3958 | __u32 board_id, scratchpad = 0; | |
3959 | __u64 cfg_offset; | |
3960 | __u32 cfg_base_addr; | |
3961 | __u64 cfg_base_addr_index; | |
2ec24ff1 | 3962 | int i, prod_index, err; |
5e216153 | 3963 | __u32 trans_offset; |
2ec24ff1 SC |
3964 | |
3965 | subsystem_vendor_id = pdev->subsystem_vendor; | |
3966 | subsystem_device_id = pdev->subsystem_device; | |
3967 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
3968 | subsystem_vendor_id); | |
3969 | ||
3970 | for (i = 0; i < ARRAY_SIZE(products); i++) { | |
3971 | /* Stand aside for hpsa driver on request */ | |
3972 | if (cciss_allow_hpsa && products[i].board_id == HPSA_BOUNDARY) | |
3973 | return -ENODEV; | |
3974 | if (board_id == products[i].board_id) | |
3975 | break; | |
3976 | } | |
3977 | prod_index = i; | |
3978 | if (prod_index == ARRAY_SIZE(products)) { | |
3979 | dev_warn(&pdev->dev, | |
3980 | "unrecognized board ID: 0x%08lx, ignoring.\n", | |
3981 | (unsigned long) board_id); | |
3982 | return -ENODEV; | |
3983 | } | |
1da177e4 LT |
3984 | |
3985 | /* check to see if controller has been disabled */ | |
3986 | /* BEFORE trying to enable it */ | |
7c832835 BH |
3987 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
3988 | if (!(command & 0x02)) { | |
3989 | printk(KERN_WARNING | |
3990 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 3991 | return -ENODEV; |
1da177e4 LT |
3992 | } |
3993 | ||
c33ac89b | 3994 | err = pci_enable_device(pdev); |
7c832835 | 3995 | if (err) { |
1da177e4 | 3996 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 3997 | return err; |
1da177e4 | 3998 | } |
1da177e4 | 3999 | |
4e570309 BH |
4000 | err = pci_request_regions(pdev, "cciss"); |
4001 | if (err) { | |
4002 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 4003 | "aborting\n"); |
872225ca | 4004 | return err; |
4e570309 BH |
4005 | } |
4006 | ||
1da177e4 LT |
4007 | #ifdef CCISS_DEBUG |
4008 | printk("command = %x\n", command); | |
4009 | printk("irq = %x\n", pdev->irq); | |
4010 | printk("board_id = %x\n", board_id); | |
7c832835 | 4011 | #endif /* CCISS_DEBUG */ |
1da177e4 | 4012 | |
fb86a35b MM |
4013 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
4014 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
4015 | */ | |
4016 | cciss_interrupt_mode(c, pdev, board_id); | |
1da177e4 | 4017 | |
e1438581 MM |
4018 | /* find the memory BAR */ |
4019 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
4020 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) | |
4021 | break; | |
4022 | } | |
4023 | if (i == DEVICE_COUNT_RESOURCE) { | |
4024 | printk(KERN_WARNING "cciss: No memory BAR found\n"); | |
4025 | err = -ENODEV; | |
4026 | goto err_out_free_res; | |
4027 | } | |
4028 | ||
4029 | c->paddr = pci_resource_start(pdev, i); /* addressing mode bits | |
4030 | * already removed | |
4031 | */ | |
1da177e4 | 4032 | |
1da177e4 | 4033 | #ifdef CCISS_DEBUG |
9f92f471 | 4034 | printk("address 0 = %lx\n", c->paddr); |
7c832835 | 4035 | #endif /* CCISS_DEBUG */ |
a5b92873 | 4036 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
1da177e4 LT |
4037 | |
4038 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
4039 | * We poll for up to 120 secs, once per 100ms. */ | |
7c832835 | 4040 | for (i = 0; i < 1200; i++) { |
1da177e4 LT |
4041 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
4042 | if (scratchpad == CCISS_FIRMWARE_READY) | |
4043 | break; | |
4044 | set_current_state(TASK_INTERRUPTIBLE); | |
4d761609 | 4045 | schedule_timeout(msecs_to_jiffies(100)); /* wait 100ms */ |
1da177e4 LT |
4046 | } |
4047 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
4048 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
c33ac89b | 4049 | err = -ENODEV; |
4e570309 | 4050 | goto err_out_free_res; |
1da177e4 LT |
4051 | } |
4052 | ||
4053 | /* get the address index number */ | |
4054 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
4055 | cfg_base_addr &= (__u32) 0x0000ffff; | |
4056 | #ifdef CCISS_DEBUG | |
4057 | printk("cfg base address = %x\n", cfg_base_addr); | |
7c832835 BH |
4058 | #endif /* CCISS_DEBUG */ |
4059 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); | |
1da177e4 | 4060 | #ifdef CCISS_DEBUG |
9f92f471 RD |
4061 | printk("cfg base address index = %llx\n", |
4062 | (unsigned long long)cfg_base_addr_index); | |
7c832835 | 4063 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
4064 | if (cfg_base_addr_index == -1) { |
4065 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
c33ac89b | 4066 | err = -ENODEV; |
4e570309 | 4067 | goto err_out_free_res; |
1da177e4 LT |
4068 | } |
4069 | ||
4070 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
4071 | #ifdef CCISS_DEBUG | |
9f92f471 | 4072 | printk("cfg offset = %llx\n", (unsigned long long)cfg_offset); |
7c832835 BH |
4073 | #endif /* CCISS_DEBUG */ |
4074 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
4075 | cfg_base_addr_index) + | |
4076 | cfg_offset, sizeof(CfgTable_struct)); | |
5e216153 MM |
4077 | /* Find performant mode table. */ |
4078 | trans_offset = readl(&(c->cfgtable->TransMethodOffset)); | |
4079 | c->transtable = remap_pci_mem(pci_resource_start(pdev, | |
4080 | cfg_base_addr_index) + cfg_offset+trans_offset, | |
4081 | sizeof(*c->transtable)); | |
1da177e4 LT |
4082 | c->board_id = board_id; |
4083 | ||
5e216153 MM |
4084 | #ifdef CCISS_DEBUG |
4085 | print_cfg_table(c->cfgtable); | |
4086 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 4087 | |
49153998 MM |
4088 | /* Some controllers support Zero Memory Raid (ZMR). |
4089 | * When configured in ZMR mode the number of supported | |
4090 | * commands drops to 64. So instead of just setting an | |
4091 | * arbitrary value we make the driver a little smarter. | |
4092 | * We read the config table to tell us how many commands | |
4093 | * are supported on the controller then subtract 4 to | |
4094 | * leave a little room for ioctl calls. | |
4095 | */ | |
5e216153 | 4096 | c->max_commands = readl(&(c->cfgtable->MaxPerformantModeCommands)); |
5c07a311 DB |
4097 | c->maxsgentries = readl(&(c->cfgtable->MaxSGElements)); |
4098 | ||
4099 | /* | |
4100 | * Limit native command to 32 s/g elements to save dma'able memory. | |
4101 | * Howvever spec says if 0, use 31 | |
4102 | */ | |
4103 | ||
4104 | c->max_cmd_sgentries = 31; | |
4105 | if (c->maxsgentries > 512) { | |
4106 | c->max_cmd_sgentries = 32; | |
4107 | c->chainsize = c->maxsgentries - c->max_cmd_sgentries + 1; | |
4108 | c->maxsgentries -= 1; /* account for chain pointer */ | |
4109 | } else { | |
4110 | c->maxsgentries = 31; /* Default to traditional value */ | |
4111 | c->chainsize = 0; /* traditional */ | |
4112 | } | |
4113 | ||
2ec24ff1 SC |
4114 | c->product_name = products[prod_index].product_name; |
4115 | c->access = *(products[prod_index].access); | |
4116 | c->nr_cmds = c->max_commands - 4; | |
7c832835 BH |
4117 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
4118 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
4119 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
4120 | (readb(&c->cfgtable->Signature[3]) != 'S')) { | |
1da177e4 | 4121 | printk("Does not appear to be a valid CISS config table\n"); |
c33ac89b | 4122 | err = -ENODEV; |
4e570309 | 4123 | goto err_out_free_res; |
1da177e4 | 4124 | } |
1da177e4 | 4125 | #ifdef CONFIG_X86 |
7c832835 BH |
4126 | { |
4127 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
4128 | __u32 prefetch; | |
4129 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
4130 | prefetch |= 0x100; | |
4131 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
4132 | } | |
1da177e4 LT |
4133 | #endif |
4134 | ||
8bf50f71 MMOD |
4135 | /* Disabling DMA prefetch and refetch for the P600. |
4136 | * An ASIC bug may result in accesses to invalid memory addresses. | |
4137 | * We've disabled prefetch for some time now. Testing with XEN | |
4138 | * kernels revealed a bug in the refetch if dom0 resides on a P600. | |
f92e2f5f MM |
4139 | */ |
4140 | if(board_id == 0x3225103C) { | |
5e216153 | 4141 | __u32 dma_prefetch; |
8bf50f71 | 4142 | __u32 dma_refetch; |
f92e2f5f MM |
4143 | dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); |
4144 | dma_prefetch |= 0x8000; | |
4145 | writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); | |
8bf50f71 MMOD |
4146 | pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch); |
4147 | dma_refetch |= 0x1; | |
4148 | pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch); | |
f92e2f5f MM |
4149 | } |
4150 | ||
1da177e4 | 4151 | #ifdef CCISS_DEBUG |
5e216153 | 4152 | printk(KERN_WARNING "Trying to put board into Performant mode\n"); |
7c832835 | 4153 | #endif /* CCISS_DEBUG */ |
b14aa6dc | 4154 | cciss_put_controller_into_performant_mode(c); |
1da177e4 LT |
4155 | return 0; |
4156 | ||
5faad620 | 4157 | err_out_free_res: |
872225ca MM |
4158 | /* |
4159 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4160 | * Smart Array controllers that pci_enable_device does not undo | |
4161 | */ | |
4e570309 | 4162 | pci_release_regions(pdev); |
c33ac89b | 4163 | return err; |
1da177e4 LT |
4164 | } |
4165 | ||
6ae5ce8e MM |
4166 | /* Function to find the first free pointer into our hba[] array |
4167 | * Returns -1 if no free entries are left. | |
7c832835 | 4168 | */ |
1da177e4 LT |
4169 | static int alloc_cciss_hba(void) |
4170 | { | |
799202cb | 4171 | int i; |
1da177e4 | 4172 | |
7c832835 | 4173 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
4174 | if (!hba[i]) { |
4175 | ctlr_info_t *p; | |
f2912a12 | 4176 | |
06ff37ff | 4177 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
4178 | if (!p) |
4179 | goto Enomem; | |
1da177e4 LT |
4180 | hba[i] = p; |
4181 | return i; | |
4182 | } | |
4183 | } | |
4184 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 4185 | " of %d controllers.\n", MAX_CTLR); |
799202cb MM |
4186 | return -1; |
4187 | Enomem: | |
1da177e4 | 4188 | printk(KERN_ERR "cciss: out of memory.\n"); |
1da177e4 LT |
4189 | return -1; |
4190 | } | |
4191 | ||
2c935593 | 4192 | static void free_hba(int n) |
1da177e4 | 4193 | { |
2c935593 SC |
4194 | ctlr_info_t *h = hba[n]; |
4195 | int i; | |
1da177e4 | 4196 | |
2c935593 SC |
4197 | hba[n] = NULL; |
4198 | for (i = 0; i < h->highest_lun + 1; i++) | |
4199 | if (h->gendisk[i] != NULL) | |
4200 | put_disk(h->gendisk[i]); | |
4201 | kfree(h); | |
1da177e4 LT |
4202 | } |
4203 | ||
82eb03cf CC |
4204 | /* Send a message CDB to the firmware. */ |
4205 | static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) | |
4206 | { | |
4207 | typedef struct { | |
4208 | CommandListHeader_struct CommandHeader; | |
4209 | RequestBlock_struct Request; | |
4210 | ErrDescriptor_struct ErrorDescriptor; | |
4211 | } Command; | |
4212 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); | |
4213 | Command *cmd; | |
4214 | dma_addr_t paddr64; | |
4215 | uint32_t paddr32, tag; | |
4216 | void __iomem *vaddr; | |
4217 | int i, err; | |
4218 | ||
4219 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
4220 | if (vaddr == NULL) | |
4221 | return -ENOMEM; | |
4222 | ||
4223 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the | |
4224 | CCISS commands, so they must be allocated from the lower 4GiB of | |
4225 | memory. */ | |
e930438c | 4226 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
82eb03cf CC |
4227 | if (err) { |
4228 | iounmap(vaddr); | |
4229 | return -ENOMEM; | |
4230 | } | |
4231 | ||
4232 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); | |
4233 | if (cmd == NULL) { | |
4234 | iounmap(vaddr); | |
4235 | return -ENOMEM; | |
4236 | } | |
4237 | ||
4238 | /* This must fit, because of the 32-bit consistent DMA mask. Also, | |
4239 | although there's no guarantee, we assume that the address is at | |
4240 | least 4-byte aligned (most likely, it's page-aligned). */ | |
4241 | paddr32 = paddr64; | |
4242 | ||
4243 | cmd->CommandHeader.ReplyQueue = 0; | |
4244 | cmd->CommandHeader.SGList = 0; | |
4245 | cmd->CommandHeader.SGTotal = 0; | |
4246 | cmd->CommandHeader.Tag.lower = paddr32; | |
4247 | cmd->CommandHeader.Tag.upper = 0; | |
4248 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); | |
4249 | ||
4250 | cmd->Request.CDBLen = 16; | |
4251 | cmd->Request.Type.Type = TYPE_MSG; | |
4252 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; | |
4253 | cmd->Request.Type.Direction = XFER_NONE; | |
4254 | cmd->Request.Timeout = 0; /* Don't time out */ | |
4255 | cmd->Request.CDB[0] = opcode; | |
4256 | cmd->Request.CDB[1] = type; | |
4257 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ | |
4258 | ||
4259 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); | |
4260 | cmd->ErrorDescriptor.Addr.upper = 0; | |
4261 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); | |
4262 | ||
4263 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); | |
4264 | ||
4265 | for (i = 0; i < 10; i++) { | |
4266 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); | |
4267 | if ((tag & ~3) == paddr32) | |
4268 | break; | |
4269 | schedule_timeout_uninterruptible(HZ); | |
4270 | } | |
4271 | ||
4272 | iounmap(vaddr); | |
4273 | ||
4274 | /* we leak the DMA buffer here ... no choice since the controller could | |
4275 | still complete the command. */ | |
4276 | if (i == 10) { | |
4277 | printk(KERN_ERR "cciss: controller message %02x:%02x timed out\n", | |
4278 | opcode, type); | |
4279 | return -ETIMEDOUT; | |
4280 | } | |
4281 | ||
4282 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); | |
4283 | ||
4284 | if (tag & 2) { | |
4285 | printk(KERN_ERR "cciss: controller message %02x:%02x failed\n", | |
4286 | opcode, type); | |
4287 | return -EIO; | |
4288 | } | |
4289 | ||
4290 | printk(KERN_INFO "cciss: controller message %02x:%02x succeeded\n", | |
4291 | opcode, type); | |
4292 | return 0; | |
4293 | } | |
4294 | ||
4295 | #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0) | |
4296 | #define cciss_noop(p) cciss_message(p, 3, 0) | |
4297 | ||
4298 | static __devinit int cciss_reset_msi(struct pci_dev *pdev) | |
4299 | { | |
4300 | /* the #defines are stolen from drivers/pci/msi.h. */ | |
4301 | #define msi_control_reg(base) (base + PCI_MSI_FLAGS) | |
4302 | #define PCI_MSIX_FLAGS_ENABLE (1 << 15) | |
4303 | ||
4304 | int pos; | |
4305 | u16 control = 0; | |
4306 | ||
4307 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); | |
4308 | if (pos) { | |
4309 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
4310 | if (control & PCI_MSI_FLAGS_ENABLE) { | |
4311 | printk(KERN_INFO "cciss: resetting MSI\n"); | |
4312 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE); | |
4313 | } | |
4314 | } | |
4315 | ||
4316 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); | |
4317 | if (pos) { | |
4318 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
4319 | if (control & PCI_MSIX_FLAGS_ENABLE) { | |
4320 | printk(KERN_INFO "cciss: resetting MSI-X\n"); | |
4321 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE); | |
4322 | } | |
4323 | } | |
4324 | ||
4325 | return 0; | |
4326 | } | |
4327 | ||
4328 | /* This does a hard reset of the controller using PCI power management | |
4329 | * states. */ | |
4330 | static __devinit int cciss_hard_reset_controller(struct pci_dev *pdev) | |
4331 | { | |
4332 | u16 pmcsr, saved_config_space[32]; | |
4333 | int i, pos; | |
4334 | ||
4335 | printk(KERN_INFO "cciss: using PCI PM to reset controller\n"); | |
4336 | ||
4337 | /* This is very nearly the same thing as | |
4338 | ||
4339 | pci_save_state(pci_dev); | |
4340 | pci_set_power_state(pci_dev, PCI_D3hot); | |
4341 | pci_set_power_state(pci_dev, PCI_D0); | |
4342 | pci_restore_state(pci_dev); | |
4343 | ||
4344 | but we can't use these nice canned kernel routines on | |
4345 | kexec, because they also check the MSI/MSI-X state in PCI | |
4346 | configuration space and do the wrong thing when it is | |
4347 | set/cleared. Also, the pci_save/restore_state functions | |
4348 | violate the ordering requirements for restoring the | |
4349 | configuration space from the CCISS document (see the | |
4350 | comment below). So we roll our own .... */ | |
4351 | ||
4352 | for (i = 0; i < 32; i++) | |
4353 | pci_read_config_word(pdev, 2*i, &saved_config_space[i]); | |
4354 | ||
4355 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); | |
4356 | if (pos == 0) { | |
4357 | printk(KERN_ERR "cciss_reset_controller: PCI PM not supported\n"); | |
4358 | return -ENODEV; | |
4359 | } | |
4360 | ||
4361 | /* Quoting from the Open CISS Specification: "The Power | |
4362 | * Management Control/Status Register (CSR) controls the power | |
4363 | * state of the device. The normal operating state is D0, | |
4364 | * CSR=00h. The software off state is D3, CSR=03h. To reset | |
4365 | * the controller, place the interface device in D3 then to | |
4366 | * D0, this causes a secondary PCI reset which will reset the | |
4367 | * controller." */ | |
4368 | ||
4369 | /* enter the D3hot power management state */ | |
4370 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); | |
4371 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4372 | pmcsr |= PCI_D3hot; | |
4373 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
4374 | ||
4375 | schedule_timeout_uninterruptible(HZ >> 1); | |
4376 | ||
4377 | /* enter the D0 power management state */ | |
4378 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4379 | pmcsr |= PCI_D0; | |
4380 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
4381 | ||
4382 | schedule_timeout_uninterruptible(HZ >> 1); | |
4383 | ||
4384 | /* Restore the PCI configuration space. The Open CISS | |
4385 | * Specification says, "Restore the PCI Configuration | |
4386 | * Registers, offsets 00h through 60h. It is important to | |
4387 | * restore the command register, 16-bits at offset 04h, | |
4388 | * last. Do not restore the configuration status register, | |
4389 | * 16-bits at offset 06h." Note that the offset is 2*i. */ | |
4390 | for (i = 0; i < 32; i++) { | |
4391 | if (i == 2 || i == 3) | |
4392 | continue; | |
4393 | pci_write_config_word(pdev, 2*i, saved_config_space[i]); | |
4394 | } | |
4395 | wmb(); | |
4396 | pci_write_config_word(pdev, 4, saved_config_space[2]); | |
4397 | ||
4398 | return 0; | |
4399 | } | |
4400 | ||
1da177e4 LT |
4401 | /* |
4402 | * This is it. Find all the controllers and register them. I really hate | |
4403 | * stealing all these major device numbers. | |
4404 | * returns the number of block devices registered. | |
4405 | */ | |
4406 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 4407 | const struct pci_device_id *ent) |
1da177e4 | 4408 | { |
1da177e4 | 4409 | int i; |
799202cb | 4410 | int j = 0; |
5c07a311 | 4411 | int k = 0; |
1da177e4 | 4412 | int rc; |
22bece00 | 4413 | int dac, return_code; |
212a5026 | 4414 | InquiryData_struct *inq_buff; |
1da177e4 | 4415 | |
82eb03cf CC |
4416 | if (reset_devices) { |
4417 | /* Reset the controller with a PCI power-cycle */ | |
4418 | if (cciss_hard_reset_controller(pdev) || cciss_reset_msi(pdev)) | |
4419 | return -ENODEV; | |
4420 | ||
5e18cfd0 JA |
4421 | /* Now try to get the controller to respond to a no-op. Some |
4422 | devices (notably the HP Smart Array 5i Controller) need | |
4423 | up to 30 seconds to respond. */ | |
5e4c91c8 | 4424 | for (i=0; i<30; i++) { |
82eb03cf CC |
4425 | if (cciss_noop(pdev) == 0) |
4426 | break; | |
5e4c91c8 JA |
4427 | |
4428 | schedule_timeout_uninterruptible(HZ); | |
4429 | } | |
4430 | if (i == 30) { | |
4431 | printk(KERN_ERR "cciss: controller seems dead\n"); | |
4432 | return -EBUSY; | |
82eb03cf CC |
4433 | } |
4434 | } | |
4435 | ||
1da177e4 | 4436 | i = alloc_cciss_hba(); |
7c832835 | 4437 | if (i < 0) |
e2019b58 | 4438 | return -1; |
1f8ef380 | 4439 | hba[i]->busy_initializing = 1; |
8a3173de JA |
4440 | INIT_HLIST_HEAD(&hba[i]->cmpQ); |
4441 | INIT_HLIST_HEAD(&hba[i]->reqQ); | |
b368c9dd | 4442 | mutex_init(&hba[i]->busy_shutting_down); |
1f8ef380 | 4443 | |
1da177e4 | 4444 | if (cciss_pci_init(hba[i], pdev) != 0) |
2cfa948c | 4445 | goto clean_no_release_regions; |
1da177e4 LT |
4446 | |
4447 | sprintf(hba[i]->devname, "cciss%d", i); | |
4448 | hba[i]->ctlr = i; | |
4449 | hba[i]->pdev = pdev; | |
4450 | ||
b368c9dd AP |
4451 | init_completion(&hba[i]->scan_wait); |
4452 | ||
7fe06326 AP |
4453 | if (cciss_create_hba_sysfs_entry(hba[i])) |
4454 | goto clean0; | |
4455 | ||
1da177e4 | 4456 | /* configure PCI DMA stuff */ |
6a35528a | 4457 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
40aabb58 | 4458 | dac = 1; |
284901a9 | 4459 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
40aabb58 | 4460 | dac = 0; |
1da177e4 | 4461 | else { |
40aabb58 | 4462 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
4463 | goto clean1; |
4464 | } | |
4465 | ||
4466 | /* | |
4467 | * register with the major number, or get a dynamic major number | |
4468 | * by passing 0 as argument. This is done for greater than | |
4469 | * 8 controller support. | |
4470 | */ | |
4471 | if (i < MAX_CTLR_ORIG) | |
564de74a | 4472 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 4473 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 4474 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 4475 | printk(KERN_ERR |
7c832835 BH |
4476 | "cciss: Unable to get major number %d for %s " |
4477 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 4478 | goto clean1; |
7c832835 | 4479 | } else { |
1da177e4 LT |
4480 | if (i >= MAX_CTLR_ORIG) |
4481 | hba[i]->major = rc; | |
4482 | } | |
4483 | ||
4484 | /* make sure the board interrupts are off */ | |
4485 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
0c2b3908 | 4486 | if (hba[i]->msi_vector || hba[i]->msix_vector) { |
256aea3f | 4487 | if (request_irq(hba[i]->intr[PERF_MODE_INT], |
0c2b3908 MM |
4488 | do_cciss_msix_intr, |
4489 | IRQF_DISABLED, hba[i]->devname, hba[i])) { | |
4490 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", | |
256aea3f | 4491 | hba[i]->intr[PERF_MODE_INT], hba[i]->devname); |
0c2b3908 MM |
4492 | goto clean2; |
4493 | } | |
4494 | } else { | |
256aea3f | 4495 | if (request_irq(hba[i]->intr[PERF_MODE_INT], do_cciss_intx, |
0c2b3908 MM |
4496 | IRQF_DISABLED, hba[i]->devname, hba[i])) { |
4497 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", | |
256aea3f | 4498 | hba[i]->intr[PERF_MODE_INT], hba[i]->devname); |
0c2b3908 MM |
4499 | goto clean2; |
4500 | } | |
1da177e4 | 4501 | } |
40aabb58 BH |
4502 | |
4503 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 | 4504 | hba[i]->devname, pdev->device, pci_name(pdev), |
5e216153 | 4505 | hba[i]->intr[PERF_MODE_INT], dac ? "" : " not"); |
7c832835 BH |
4506 | |
4507 | hba[i]->cmd_pool_bits = | |
061837bc JL |
4508 | kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
4509 | * sizeof(unsigned long), GFP_KERNEL); | |
7c832835 BH |
4510 | hba[i]->cmd_pool = (CommandList_struct *) |
4511 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 4512 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
4513 | &(hba[i]->cmd_pool_dhandle)); |
4514 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
4515 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 4516 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
4517 | &(hba[i]->errinfo_pool_dhandle)); |
4518 | if ((hba[i]->cmd_pool_bits == NULL) | |
4519 | || (hba[i]->cmd_pool == NULL) | |
4520 | || (hba[i]->errinfo_pool == NULL)) { | |
4521 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
4522 | goto clean4; |
4523 | } | |
5c07a311 DB |
4524 | |
4525 | /* Need space for temp scatter list */ | |
4526 | hba[i]->scatter_list = kmalloc(hba[i]->max_commands * | |
4527 | sizeof(struct scatterlist *), | |
4528 | GFP_KERNEL); | |
4529 | for (k = 0; k < hba[i]->nr_cmds; k++) { | |
4530 | hba[i]->scatter_list[k] = kmalloc(sizeof(struct scatterlist) * | |
4531 | hba[i]->maxsgentries, | |
4532 | GFP_KERNEL); | |
4533 | if (hba[i]->scatter_list[k] == NULL) { | |
4534 | printk(KERN_ERR "cciss%d: could not allocate " | |
4535 | "s/g lists\n", i); | |
4536 | goto clean4; | |
4537 | } | |
4538 | } | |
49fc5601 SC |
4539 | hba[i]->cmd_sg_list = cciss_allocate_sg_chain_blocks(hba[i], |
4540 | hba[i]->chainsize, hba[i]->nr_cmds); | |
4541 | if (!hba[i]->cmd_sg_list && hba[i]->chainsize > 0) | |
5c07a311 | 4542 | goto clean4; |
5c07a311 | 4543 | |
1da177e4 | 4544 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 4545 | |
7c832835 BH |
4546 | /* Initialize the pdev driver private data. |
4547 | have it point to hba[i]. */ | |
1da177e4 | 4548 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
4549 | /* command and error info recs zeroed out before |
4550 | they are used */ | |
4551 | memset(hba[i]->cmd_pool_bits, 0, | |
061837bc JL |
4552 | DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
4553 | * sizeof(unsigned long)); | |
1da177e4 | 4554 | |
6ae5ce8e MM |
4555 | hba[i]->num_luns = 0; |
4556 | hba[i]->highest_lun = -1; | |
4557 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
9cef0d2f | 4558 | hba[i]->drv[j] = NULL; |
6ae5ce8e MM |
4559 | hba[i]->gendisk[j] = NULL; |
4560 | } | |
1da177e4 LT |
4561 | |
4562 | cciss_scsi_setup(i); | |
4563 | ||
4564 | /* Turn the interrupts on so we can service requests */ | |
4565 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
4566 | ||
22bece00 MM |
4567 | /* Get the firmware version */ |
4568 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
4569 | if (inq_buff == NULL) { | |
4570 | printk(KERN_ERR "cciss: out of memory\n"); | |
4571 | goto clean4; | |
4572 | } | |
4573 | ||
4574 | return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff, | |
b57695fe | 4575 | sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); |
22bece00 MM |
4576 | if (return_code == IO_OK) { |
4577 | hba[i]->firm_ver[0] = inq_buff->data_byte[32]; | |
4578 | hba[i]->firm_ver[1] = inq_buff->data_byte[33]; | |
4579 | hba[i]->firm_ver[2] = inq_buff->data_byte[34]; | |
4580 | hba[i]->firm_ver[3] = inq_buff->data_byte[35]; | |
4581 | } else { /* send command failed */ | |
4582 | printk(KERN_WARNING "cciss: unable to determine firmware" | |
4583 | " version of controller\n"); | |
4584 | } | |
212a5026 | 4585 | kfree(inq_buff); |
22bece00 | 4586 | |
1da177e4 | 4587 | cciss_procinit(i); |
92c4231a | 4588 | |
5c07a311 | 4589 | hba[i]->cciss_max_sectors = 8192; |
92c4231a | 4590 | |
2d11d993 | 4591 | rebuild_lun_table(hba[i], 1, 0); |
d6dbf42e | 4592 | hba[i]->busy_initializing = 0; |
e2019b58 | 4593 | return 1; |
1da177e4 | 4594 | |
6ae5ce8e | 4595 | clean4: |
6044ec88 | 4596 | kfree(hba[i]->cmd_pool_bits); |
5c07a311 DB |
4597 | /* Free up sg elements */ |
4598 | for (k = 0; k < hba[i]->nr_cmds; k++) | |
4599 | kfree(hba[i]->scatter_list[k]); | |
4600 | kfree(hba[i]->scatter_list); | |
49fc5601 | 4601 | cciss_free_sg_chain_blocks(hba[i]->cmd_sg_list, hba[i]->nr_cmds); |
7c832835 | 4602 | if (hba[i]->cmd_pool) |
1da177e4 | 4603 | pci_free_consistent(hba[i]->pdev, |
f880632f | 4604 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
4605 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
4606 | if (hba[i]->errinfo_pool) | |
1da177e4 | 4607 | pci_free_consistent(hba[i]->pdev, |
f880632f | 4608 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
4609 | hba[i]->errinfo_pool, |
4610 | hba[i]->errinfo_pool_dhandle); | |
5e216153 | 4611 | free_irq(hba[i]->intr[PERF_MODE_INT], hba[i]); |
6ae5ce8e | 4612 | clean2: |
1da177e4 | 4613 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
6ae5ce8e | 4614 | clean1: |
7fe06326 AP |
4615 | cciss_destroy_hba_sysfs_entry(hba[i]); |
4616 | clean0: | |
2cfa948c SC |
4617 | pci_release_regions(pdev); |
4618 | clean_no_release_regions: | |
1f8ef380 | 4619 | hba[i]->busy_initializing = 0; |
9cef0d2f | 4620 | |
872225ca MM |
4621 | /* |
4622 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4623 | * Smart Array controllers that pci_enable_device does not undo | |
4624 | */ | |
799202cb | 4625 | pci_set_drvdata(pdev, NULL); |
61808c2b | 4626 | free_hba(i); |
e2019b58 | 4627 | return -1; |
1da177e4 LT |
4628 | } |
4629 | ||
e9ca75b5 | 4630 | static void cciss_shutdown(struct pci_dev *pdev) |
1da177e4 | 4631 | { |
29009a03 SC |
4632 | ctlr_info_t *h; |
4633 | char *flush_buf; | |
7c832835 | 4634 | int return_code; |
1da177e4 | 4635 | |
29009a03 SC |
4636 | h = pci_get_drvdata(pdev); |
4637 | flush_buf = kzalloc(4, GFP_KERNEL); | |
4638 | if (!flush_buf) { | |
4639 | printk(KERN_WARNING | |
4640 | "cciss:%d cache not flushed, out of memory.\n", | |
4641 | h->ctlr); | |
e9ca75b5 | 4642 | return; |
e9ca75b5 | 4643 | } |
29009a03 SC |
4644 | /* write all data in the battery backed cache to disk */ |
4645 | memset(flush_buf, 0, 4); | |
4646 | return_code = sendcmd_withirq(CCISS_CACHE_FLUSH, h->ctlr, flush_buf, | |
4647 | 4, 0, CTLR_LUNID, TYPE_CMD); | |
4648 | kfree(flush_buf); | |
4649 | if (return_code != IO_OK) | |
4650 | printk(KERN_WARNING "cciss%d: Error flushing cache\n", | |
4651 | h->ctlr); | |
4652 | h->access.set_intr_mask(h, CCISS_INTR_OFF); | |
5e216153 | 4653 | free_irq(h->intr[PERF_MODE_INT], h); |
e9ca75b5 GB |
4654 | } |
4655 | ||
4656 | static void __devexit cciss_remove_one(struct pci_dev *pdev) | |
4657 | { | |
4658 | ctlr_info_t *tmp_ptr; | |
4659 | int i, j; | |
4660 | ||
7c832835 BH |
4661 | if (pci_get_drvdata(pdev) == NULL) { |
4662 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
4663 | return; |
4664 | } | |
0a9279cc | 4665 | |
1da177e4 LT |
4666 | tmp_ptr = pci_get_drvdata(pdev); |
4667 | i = tmp_ptr->ctlr; | |
7c832835 | 4668 | if (hba[i] == NULL) { |
1da177e4 | 4669 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 4670 | "already be removed \n"); |
1da177e4 LT |
4671 | return; |
4672 | } | |
b6550777 | 4673 | |
b368c9dd | 4674 | mutex_lock(&hba[i]->busy_shutting_down); |
0a9279cc | 4675 | |
b368c9dd | 4676 | remove_from_scan_list(hba[i]); |
b6550777 BH |
4677 | remove_proc_entry(hba[i]->devname, proc_cciss); |
4678 | unregister_blkdev(hba[i]->major, hba[i]->devname); | |
4679 | ||
4680 | /* remove it from the disk list */ | |
4681 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
4682 | struct gendisk *disk = hba[i]->gendisk[j]; | |
4683 | if (disk) { | |
165125e1 | 4684 | struct request_queue *q = disk->queue; |
b6550777 | 4685 | |
097d0264 | 4686 | if (disk->flags & GENHD_FL_UP) { |
8ce51966 | 4687 | cciss_destroy_ld_sysfs_entry(hba[i], j, 1); |
b6550777 | 4688 | del_gendisk(disk); |
097d0264 | 4689 | } |
b6550777 BH |
4690 | if (q) |
4691 | blk_cleanup_queue(q); | |
4692 | } | |
4693 | } | |
4694 | ||
ba198efb | 4695 | #ifdef CONFIG_CISS_SCSI_TAPE |
b6550777 | 4696 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
ba198efb | 4697 | #endif |
b6550777 | 4698 | |
e9ca75b5 | 4699 | cciss_shutdown(pdev); |
fb86a35b MM |
4700 | |
4701 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
4702 | if (hba[i]->msix_vector) |
4703 | pci_disable_msix(hba[i]->pdev); | |
4704 | else if (hba[i]->msi_vector) | |
4705 | pci_disable_msi(hba[i]->pdev); | |
4706 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 4707 | |
1da177e4 | 4708 | iounmap(hba[i]->vaddr); |
1da177e4 | 4709 | |
f880632f | 4710 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
1da177e4 | 4711 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
f880632f | 4712 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 | 4713 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
1da177e4 | 4714 | kfree(hba[i]->cmd_pool_bits); |
5c07a311 DB |
4715 | /* Free up sg elements */ |
4716 | for (j = 0; j < hba[i]->nr_cmds; j++) | |
4717 | kfree(hba[i]->scatter_list[j]); | |
4718 | kfree(hba[i]->scatter_list); | |
49fc5601 | 4719 | cciss_free_sg_chain_blocks(hba[i]->cmd_sg_list, hba[i]->nr_cmds); |
872225ca MM |
4720 | /* |
4721 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4722 | * Smart Array controllers that pci_enable_device does not undo | |
4723 | */ | |
7c832835 | 4724 | pci_release_regions(pdev); |
4e570309 | 4725 | pci_set_drvdata(pdev, NULL); |
7fe06326 | 4726 | cciss_destroy_hba_sysfs_entry(hba[i]); |
b368c9dd | 4727 | mutex_unlock(&hba[i]->busy_shutting_down); |
1da177e4 | 4728 | free_hba(i); |
7c832835 | 4729 | } |
1da177e4 LT |
4730 | |
4731 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
4732 | .name = "cciss", |
4733 | .probe = cciss_init_one, | |
4734 | .remove = __devexit_p(cciss_remove_one), | |
4735 | .id_table = cciss_pci_device_id, /* id_table */ | |
e9ca75b5 | 4736 | .shutdown = cciss_shutdown, |
1da177e4 LT |
4737 | }; |
4738 | ||
4739 | /* | |
4740 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 4741 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
4742 | */ |
4743 | static int __init cciss_init(void) | |
4744 | { | |
7fe06326 AP |
4745 | int err; |
4746 | ||
10cbda97 JA |
4747 | /* |
4748 | * The hardware requires that commands are aligned on a 64-bit | |
4749 | * boundary. Given that we use pci_alloc_consistent() to allocate an | |
4750 | * array of them, the size must be a multiple of 8 bytes. | |
4751 | */ | |
1b7d0d28 | 4752 | BUILD_BUG_ON(sizeof(CommandList_struct) % COMMANDLIST_ALIGNMENT); |
1da177e4 LT |
4753 | printk(KERN_INFO DRIVER_NAME "\n"); |
4754 | ||
7fe06326 AP |
4755 | err = bus_register(&cciss_bus_type); |
4756 | if (err) | |
4757 | return err; | |
4758 | ||
b368c9dd AP |
4759 | /* Start the scan thread */ |
4760 | cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan"); | |
4761 | if (IS_ERR(cciss_scan_thread)) { | |
4762 | err = PTR_ERR(cciss_scan_thread); | |
4763 | goto err_bus_unregister; | |
4764 | } | |
4765 | ||
1da177e4 | 4766 | /* Register for our PCI devices */ |
7fe06326 AP |
4767 | err = pci_register_driver(&cciss_pci_driver); |
4768 | if (err) | |
b368c9dd | 4769 | goto err_thread_stop; |
7fe06326 | 4770 | |
617e1344 | 4771 | return err; |
7fe06326 | 4772 | |
b368c9dd AP |
4773 | err_thread_stop: |
4774 | kthread_stop(cciss_scan_thread); | |
4775 | err_bus_unregister: | |
7fe06326 | 4776 | bus_unregister(&cciss_bus_type); |
b368c9dd | 4777 | |
7fe06326 | 4778 | return err; |
1da177e4 LT |
4779 | } |
4780 | ||
4781 | static void __exit cciss_cleanup(void) | |
4782 | { | |
4783 | int i; | |
4784 | ||
4785 | pci_unregister_driver(&cciss_pci_driver); | |
4786 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
4787 | for (i = 0; i < MAX_CTLR; i++) { |
4788 | if (hba[i] != NULL) { | |
1da177e4 | 4789 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 4790 | " controller %d\n", i); |
1da177e4 LT |
4791 | cciss_remove_one(hba[i]->pdev); |
4792 | } | |
4793 | } | |
b368c9dd | 4794 | kthread_stop(cciss_scan_thread); |
928b4d8c | 4795 | remove_proc_entry("driver/cciss", NULL); |
7fe06326 | 4796 | bus_unregister(&cciss_bus_type); |
1da177e4 LT |
4797 | } |
4798 | ||
4799 | module_init(cciss_init); | |
4800 | module_exit(cciss_cleanup); |