Commit | Line | Data |
---|---|---|
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); |
33079b21 | 216 | |
5e216153 MM |
217 | /* performant mode helper functions */ |
218 | static void calc_bucket_map(int *bucket, int num_buckets, int nsgs, | |
219 | int *bucket_map); | |
220 | static void cciss_put_controller_into_performant_mode(ctlr_info_t *h); | |
221 | ||
1da177e4 | 222 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
223 | static void cciss_procinit(int i); |
224 | #else | |
7c832835 BH |
225 | static void cciss_procinit(int i) |
226 | { | |
227 | } | |
228 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
229 | |
230 | #ifdef CONFIG_COMPAT | |
ef7822c2 AV |
231 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
232 | unsigned, unsigned long); | |
1da177e4 LT |
233 | #endif |
234 | ||
83d5cde4 | 235 | static const struct block_device_operations cciss_fops = { |
7c832835 | 236 | .owner = THIS_MODULE, |
ef7822c2 AV |
237 | .open = cciss_open, |
238 | .release = cciss_release, | |
239 | .locked_ioctl = cciss_ioctl, | |
7c832835 | 240 | .getgeo = cciss_getgeo, |
1da177e4 | 241 | #ifdef CONFIG_COMPAT |
ef7822c2 | 242 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 243 | #endif |
7c832835 | 244 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
245 | }; |
246 | ||
5e216153 MM |
247 | /* set_performant_mode: Modify the tag for cciss performant |
248 | * set bit 0 for pull model, bits 3-1 for block fetch | |
249 | * register number | |
250 | */ | |
251 | static void set_performant_mode(ctlr_info_t *h, CommandList_struct *c) | |
252 | { | |
253 | if (likely(h->transMethod == CFGTBL_Trans_Performant)) | |
254 | c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); | |
255 | } | |
256 | ||
1da177e4 LT |
257 | /* |
258 | * Enqueuing and dequeuing functions for cmdlists. | |
259 | */ | |
8a3173de | 260 | static inline void addQ(struct hlist_head *list, CommandList_struct *c) |
1da177e4 | 261 | { |
8a3173de | 262 | hlist_add_head(&c->list, list); |
1da177e4 LT |
263 | } |
264 | ||
8a3173de | 265 | static inline void removeQ(CommandList_struct *c) |
1da177e4 | 266 | { |
b59e64d0 HR |
267 | /* |
268 | * After kexec/dump some commands might still | |
269 | * be in flight, which the firmware will try | |
270 | * to complete. Resetting the firmware doesn't work | |
271 | * with old fw revisions, so we have to mark | |
272 | * them off as 'stale' to prevent the driver from | |
273 | * falling over. | |
274 | */ | |
275 | if (WARN_ON(hlist_unhashed(&c->list))) { | |
276 | c->cmd_type = CMD_MSG_STALE; | |
8a3173de | 277 | return; |
b59e64d0 | 278 | } |
8a3173de JA |
279 | |
280 | hlist_del_init(&c->list); | |
1da177e4 LT |
281 | } |
282 | ||
664a717d MM |
283 | static void enqueue_cmd_and_start_io(ctlr_info_t *h, |
284 | CommandList_struct *c) | |
285 | { | |
286 | unsigned long flags; | |
5e216153 | 287 | set_performant_mode(h, c); |
664a717d MM |
288 | spin_lock_irqsave(&h->lock, flags); |
289 | addQ(&h->reqQ, c); | |
290 | h->Qdepth++; | |
291 | start_io(h); | |
292 | spin_unlock_irqrestore(&h->lock, flags); | |
293 | } | |
294 | ||
dccc9b56 | 295 | static void cciss_free_sg_chain_blocks(SGDescriptor_struct **cmd_sg_list, |
49fc5601 SC |
296 | int nr_cmds) |
297 | { | |
298 | int i; | |
299 | ||
300 | if (!cmd_sg_list) | |
301 | return; | |
302 | for (i = 0; i < nr_cmds; i++) { | |
dccc9b56 SC |
303 | kfree(cmd_sg_list[i]); |
304 | cmd_sg_list[i] = NULL; | |
49fc5601 SC |
305 | } |
306 | kfree(cmd_sg_list); | |
307 | } | |
308 | ||
dccc9b56 SC |
309 | static SGDescriptor_struct **cciss_allocate_sg_chain_blocks( |
310 | ctlr_info_t *h, int chainsize, int nr_cmds) | |
49fc5601 SC |
311 | { |
312 | int j; | |
dccc9b56 | 313 | SGDescriptor_struct **cmd_sg_list; |
49fc5601 SC |
314 | |
315 | if (chainsize <= 0) | |
316 | return NULL; | |
317 | ||
318 | cmd_sg_list = kmalloc(sizeof(*cmd_sg_list) * nr_cmds, GFP_KERNEL); | |
319 | if (!cmd_sg_list) | |
320 | return NULL; | |
321 | ||
322 | /* Build up chain blocks for each command */ | |
323 | for (j = 0; j < nr_cmds; j++) { | |
49fc5601 | 324 | /* Need a block of chainsized s/g elements. */ |
dccc9b56 SC |
325 | cmd_sg_list[j] = kmalloc((chainsize * |
326 | sizeof(*cmd_sg_list[j])), GFP_KERNEL); | |
327 | if (!cmd_sg_list[j]) { | |
49fc5601 SC |
328 | dev_err(&h->pdev->dev, "Cannot get memory " |
329 | "for s/g chains.\n"); | |
330 | goto clean; | |
331 | } | |
332 | } | |
333 | return cmd_sg_list; | |
334 | clean: | |
335 | cciss_free_sg_chain_blocks(cmd_sg_list, nr_cmds); | |
336 | return NULL; | |
337 | } | |
338 | ||
d45033ef SC |
339 | static void cciss_unmap_sg_chain_block(ctlr_info_t *h, CommandList_struct *c) |
340 | { | |
341 | SGDescriptor_struct *chain_sg; | |
342 | u64bit temp64; | |
343 | ||
344 | if (c->Header.SGTotal <= h->max_cmd_sgentries) | |
345 | return; | |
346 | ||
347 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; | |
348 | temp64.val32.lower = chain_sg->Addr.lower; | |
349 | temp64.val32.upper = chain_sg->Addr.upper; | |
350 | pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); | |
351 | } | |
352 | ||
353 | static void cciss_map_sg_chain_block(ctlr_info_t *h, CommandList_struct *c, | |
354 | SGDescriptor_struct *chain_block, int len) | |
355 | { | |
356 | SGDescriptor_struct *chain_sg; | |
357 | u64bit temp64; | |
358 | ||
359 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; | |
360 | chain_sg->Ext = CCISS_SG_CHAIN; | |
361 | chain_sg->Len = len; | |
362 | temp64.val = pci_map_single(h->pdev, chain_block, len, | |
363 | PCI_DMA_TODEVICE); | |
364 | chain_sg->Addr.lower = temp64.val32.lower; | |
365 | chain_sg->Addr.upper = temp64.val32.upper; | |
366 | } | |
367 | ||
1da177e4 LT |
368 | #include "cciss_scsi.c" /* For SCSI tape support */ |
369 | ||
1e6f2dc1 AB |
370 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
371 | "UNKNOWN" | |
372 | }; | |
373 | #define RAID_UNKNOWN (sizeof(raid_label) / sizeof(raid_label[0])-1) | |
0f5486ec | 374 | |
1da177e4 LT |
375 | #ifdef CONFIG_PROC_FS |
376 | ||
5e216153 MM |
377 | static inline u32 next_command(ctlr_info_t *h) |
378 | { | |
379 | u32 a; | |
380 | ||
381 | if (unlikely(h->transMethod != CFGTBL_Trans_Performant)) | |
382 | return h->access.command_completed(h); | |
383 | ||
384 | if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { | |
385 | a = *(h->reply_pool_head); /* Next cmd in ring buffer */ | |
386 | (h->reply_pool_head)++; | |
387 | h->commands_outstanding--; | |
388 | } else { | |
389 | a = FIFO_EMPTY; | |
390 | } | |
391 | /* Check for wraparound */ | |
392 | if (h->reply_pool_head == (h->reply_pool + h->max_commands)) { | |
393 | h->reply_pool_head = h->reply_pool; | |
394 | h->reply_pool_wraparound ^= 1; | |
395 | } | |
396 | return a; | |
397 | } | |
398 | ||
1da177e4 LT |
399 | /* |
400 | * Report information about this controller. | |
401 | */ | |
402 | #define ENG_GIG 1000000000 | |
403 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
89b6e743 | 404 | #define ENGAGE_SCSI "engage scsi" |
1da177e4 LT |
405 | |
406 | static struct proc_dir_entry *proc_cciss; | |
407 | ||
89b6e743 | 408 | static void cciss_seq_show_header(struct seq_file *seq) |
1da177e4 | 409 | { |
89b6e743 MM |
410 | ctlr_info_t *h = seq->private; |
411 | ||
412 | seq_printf(seq, "%s: HP %s Controller\n" | |
413 | "Board ID: 0x%08lx\n" | |
414 | "Firmware Version: %c%c%c%c\n" | |
415 | "IRQ: %d\n" | |
416 | "Logical drives: %d\n" | |
417 | "Current Q depth: %d\n" | |
418 | "Current # commands on controller: %d\n" | |
419 | "Max Q depth since init: %d\n" | |
420 | "Max # commands on controller since init: %d\n" | |
421 | "Max SG entries since init: %d\n", | |
422 | h->devname, | |
423 | h->product_name, | |
424 | (unsigned long)h->board_id, | |
425 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
5e216153 | 426 | h->firm_ver[3], (unsigned int)h->intr[PERF_MODE_INT], |
89b6e743 MM |
427 | h->num_luns, |
428 | h->Qdepth, h->commands_outstanding, | |
429 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
430 | ||
431 | #ifdef CONFIG_CISS_SCSI_TAPE | |
432 | cciss_seq_tape_report(seq, h->ctlr); | |
433 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
434 | } | |
1da177e4 | 435 | |
89b6e743 MM |
436 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
437 | { | |
438 | ctlr_info_t *h = seq->private; | |
439 | unsigned ctlr = h->ctlr; | |
440 | unsigned long flags; | |
1da177e4 LT |
441 | |
442 | /* prevent displaying bogus info during configuration | |
443 | * or deconfiguration of a logical volume | |
444 | */ | |
445 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
446 | if (h->busy_configuring) { | |
447 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
89b6e743 | 448 | return ERR_PTR(-EBUSY); |
1da177e4 LT |
449 | } |
450 | h->busy_configuring = 1; | |
451 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
452 | ||
89b6e743 MM |
453 | if (*pos == 0) |
454 | cciss_seq_show_header(seq); | |
455 | ||
456 | return pos; | |
457 | } | |
458 | ||
459 | static int cciss_seq_show(struct seq_file *seq, void *v) | |
460 | { | |
461 | sector_t vol_sz, vol_sz_frac; | |
462 | ctlr_info_t *h = seq->private; | |
463 | unsigned ctlr = h->ctlr; | |
464 | loff_t *pos = v; | |
9cef0d2f | 465 | drive_info_struct *drv = h->drv[*pos]; |
89b6e743 MM |
466 | |
467 | if (*pos > h->highest_lun) | |
468 | return 0; | |
469 | ||
531c2dc7 SC |
470 | if (drv == NULL) /* it's possible for h->drv[] to have holes. */ |
471 | return 0; | |
472 | ||
89b6e743 MM |
473 | if (drv->heads == 0) |
474 | return 0; | |
475 | ||
476 | vol_sz = drv->nr_blocks; | |
477 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
478 | vol_sz_frac *= 100; | |
479 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
480 | ||
fa52bec9 | 481 | if (drv->raid_level < 0 || drv->raid_level > RAID_UNKNOWN) |
89b6e743 MM |
482 | drv->raid_level = RAID_UNKNOWN; |
483 | seq_printf(seq, "cciss/c%dd%d:" | |
484 | "\t%4u.%02uGB\tRAID %s\n", | |
485 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, | |
486 | raid_label[drv->raid_level]); | |
487 | return 0; | |
488 | } | |
489 | ||
490 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
491 | { | |
492 | ctlr_info_t *h = seq->private; | |
493 | ||
494 | if (*pos > h->highest_lun) | |
495 | return NULL; | |
496 | *pos += 1; | |
497 | ||
498 | return pos; | |
499 | } | |
500 | ||
501 | static void cciss_seq_stop(struct seq_file *seq, void *v) | |
502 | { | |
503 | ctlr_info_t *h = seq->private; | |
504 | ||
505 | /* Only reset h->busy_configuring if we succeeded in setting | |
506 | * it during cciss_seq_start. */ | |
507 | if (v == ERR_PTR(-EBUSY)) | |
508 | return; | |
7c832835 | 509 | |
1da177e4 | 510 | h->busy_configuring = 0; |
1da177e4 LT |
511 | } |
512 | ||
88e9d34c | 513 | static const struct seq_operations cciss_seq_ops = { |
89b6e743 MM |
514 | .start = cciss_seq_start, |
515 | .show = cciss_seq_show, | |
516 | .next = cciss_seq_next, | |
517 | .stop = cciss_seq_stop, | |
518 | }; | |
519 | ||
520 | static int cciss_seq_open(struct inode *inode, struct file *file) | |
521 | { | |
522 | int ret = seq_open(file, &cciss_seq_ops); | |
523 | struct seq_file *seq = file->private_data; | |
524 | ||
525 | if (!ret) | |
526 | seq->private = PDE(inode)->data; | |
527 | ||
528 | return ret; | |
529 | } | |
530 | ||
531 | static ssize_t | |
532 | cciss_proc_write(struct file *file, const char __user *buf, | |
533 | size_t length, loff_t *ppos) | |
1da177e4 | 534 | { |
89b6e743 MM |
535 | int err; |
536 | char *buffer; | |
537 | ||
538 | #ifndef CONFIG_CISS_SCSI_TAPE | |
539 | return -EINVAL; | |
1da177e4 LT |
540 | #endif |
541 | ||
89b6e743 | 542 | if (!buf || length > PAGE_SIZE - 1) |
7c832835 | 543 | return -EINVAL; |
89b6e743 MM |
544 | |
545 | buffer = (char *)__get_free_page(GFP_KERNEL); | |
546 | if (!buffer) | |
547 | return -ENOMEM; | |
548 | ||
549 | err = -EFAULT; | |
550 | if (copy_from_user(buffer, buf, length)) | |
551 | goto out; | |
552 | buffer[length] = '\0'; | |
553 | ||
554 | #ifdef CONFIG_CISS_SCSI_TAPE | |
555 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { | |
556 | struct seq_file *seq = file->private_data; | |
557 | ctlr_info_t *h = seq->private; | |
89b6e743 | 558 | |
8721c81f SC |
559 | err = cciss_engage_scsi(h->ctlr); |
560 | if (err == 0) | |
89b6e743 MM |
561 | err = length; |
562 | } else | |
563 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
564 | err = -EINVAL; | |
7c832835 BH |
565 | /* might be nice to have "disengage" too, but it's not |
566 | safely possible. (only 1 module use count, lock issues.) */ | |
89b6e743 MM |
567 | |
568 | out: | |
569 | free_page((unsigned long)buffer); | |
570 | return err; | |
1da177e4 LT |
571 | } |
572 | ||
828c0950 | 573 | static const struct file_operations cciss_proc_fops = { |
89b6e743 MM |
574 | .owner = THIS_MODULE, |
575 | .open = cciss_seq_open, | |
576 | .read = seq_read, | |
577 | .llseek = seq_lseek, | |
578 | .release = seq_release, | |
579 | .write = cciss_proc_write, | |
580 | }; | |
581 | ||
1da177e4 LT |
582 | static void __devinit cciss_procinit(int i) |
583 | { | |
584 | struct proc_dir_entry *pde; | |
585 | ||
89b6e743 | 586 | if (proc_cciss == NULL) |
928b4d8c | 587 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
89b6e743 MM |
588 | if (!proc_cciss) |
589 | return; | |
3dfcf9c4 | 590 | pde = proc_create_data(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
89b6e743 | 591 | S_IROTH, proc_cciss, |
3dfcf9c4 | 592 | &cciss_proc_fops, hba[i]); |
1da177e4 | 593 | } |
7c832835 | 594 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 595 | |
7fe06326 AP |
596 | #define MAX_PRODUCT_NAME_LEN 19 |
597 | ||
598 | #define to_hba(n) container_of(n, struct ctlr_info, dev) | |
599 | #define to_drv(n) container_of(n, drive_info_struct, dev) | |
600 | ||
d6f4965d AP |
601 | static ssize_t host_store_rescan(struct device *dev, |
602 | struct device_attribute *attr, | |
603 | const char *buf, size_t count) | |
604 | { | |
605 | struct ctlr_info *h = to_hba(dev); | |
606 | ||
607 | add_to_scan_list(h); | |
608 | wake_up_process(cciss_scan_thread); | |
609 | wait_for_completion_interruptible(&h->scan_wait); | |
610 | ||
611 | return count; | |
612 | } | |
8ba95c69 | 613 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); |
7fe06326 AP |
614 | |
615 | static ssize_t dev_show_unique_id(struct device *dev, | |
616 | struct device_attribute *attr, | |
617 | char *buf) | |
618 | { | |
619 | drive_info_struct *drv = to_drv(dev); | |
620 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
621 | __u8 sn[16]; | |
622 | unsigned long flags; | |
623 | int ret = 0; | |
624 | ||
625 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
626 | if (h->busy_configuring) | |
627 | ret = -EBUSY; | |
628 | else | |
629 | memcpy(sn, drv->serial_no, sizeof(sn)); | |
630 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
631 | ||
632 | if (ret) | |
633 | return ret; | |
634 | else | |
635 | return snprintf(buf, 16 * 2 + 2, | |
636 | "%02X%02X%02X%02X%02X%02X%02X%02X" | |
637 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", | |
638 | sn[0], sn[1], sn[2], sn[3], | |
639 | sn[4], sn[5], sn[6], sn[7], | |
640 | sn[8], sn[9], sn[10], sn[11], | |
641 | sn[12], sn[13], sn[14], sn[15]); | |
642 | } | |
8ba95c69 | 643 | static DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); |
7fe06326 AP |
644 | |
645 | static ssize_t dev_show_vendor(struct device *dev, | |
646 | struct device_attribute *attr, | |
647 | char *buf) | |
648 | { | |
649 | drive_info_struct *drv = to_drv(dev); | |
650 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
651 | char vendor[VENDOR_LEN + 1]; | |
652 | unsigned long flags; | |
653 | int ret = 0; | |
654 | ||
655 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
656 | if (h->busy_configuring) | |
657 | ret = -EBUSY; | |
658 | else | |
659 | memcpy(vendor, drv->vendor, VENDOR_LEN + 1); | |
660 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
661 | ||
662 | if (ret) | |
663 | return ret; | |
664 | else | |
665 | return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); | |
666 | } | |
8ba95c69 | 667 | static DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); |
7fe06326 AP |
668 | |
669 | static ssize_t dev_show_model(struct device *dev, | |
670 | struct device_attribute *attr, | |
671 | char *buf) | |
672 | { | |
673 | drive_info_struct *drv = to_drv(dev); | |
674 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
675 | char model[MODEL_LEN + 1]; | |
676 | unsigned long flags; | |
677 | int ret = 0; | |
678 | ||
679 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
680 | if (h->busy_configuring) | |
681 | ret = -EBUSY; | |
682 | else | |
683 | memcpy(model, drv->model, MODEL_LEN + 1); | |
684 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
685 | ||
686 | if (ret) | |
687 | return ret; | |
688 | else | |
689 | return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); | |
690 | } | |
8ba95c69 | 691 | static DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); |
7fe06326 AP |
692 | |
693 | static ssize_t dev_show_rev(struct device *dev, | |
694 | struct device_attribute *attr, | |
695 | char *buf) | |
696 | { | |
697 | drive_info_struct *drv = to_drv(dev); | |
698 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
699 | char rev[REV_LEN + 1]; | |
700 | unsigned long flags; | |
701 | int ret = 0; | |
702 | ||
703 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
704 | if (h->busy_configuring) | |
705 | ret = -EBUSY; | |
706 | else | |
707 | memcpy(rev, drv->rev, REV_LEN + 1); | |
708 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
709 | ||
710 | if (ret) | |
711 | return ret; | |
712 | else | |
713 | return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); | |
714 | } | |
8ba95c69 | 715 | static DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); |
7fe06326 | 716 | |
ce84a8ae SC |
717 | static ssize_t cciss_show_lunid(struct device *dev, |
718 | struct device_attribute *attr, char *buf) | |
719 | { | |
9cef0d2f SC |
720 | drive_info_struct *drv = to_drv(dev); |
721 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
ce84a8ae SC |
722 | unsigned long flags; |
723 | unsigned char lunid[8]; | |
724 | ||
725 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
726 | if (h->busy_configuring) { | |
727 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
728 | return -EBUSY; | |
729 | } | |
730 | if (!drv->heads) { | |
731 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
732 | return -ENOTTY; | |
733 | } | |
734 | memcpy(lunid, drv->LunID, sizeof(lunid)); | |
735 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
736 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
737 | lunid[0], lunid[1], lunid[2], lunid[3], | |
738 | lunid[4], lunid[5], lunid[6], lunid[7]); | |
739 | } | |
8ba95c69 | 740 | static DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL); |
ce84a8ae | 741 | |
3ff1111d SC |
742 | static ssize_t cciss_show_raid_level(struct device *dev, |
743 | struct device_attribute *attr, char *buf) | |
744 | { | |
9cef0d2f SC |
745 | drive_info_struct *drv = to_drv(dev); |
746 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
3ff1111d SC |
747 | int raid; |
748 | unsigned long flags; | |
749 | ||
750 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
751 | if (h->busy_configuring) { | |
752 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
753 | return -EBUSY; | |
754 | } | |
755 | raid = drv->raid_level; | |
756 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
757 | if (raid < 0 || raid > RAID_UNKNOWN) | |
758 | raid = RAID_UNKNOWN; | |
759 | ||
760 | return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n", | |
761 | raid_label[raid]); | |
762 | } | |
8ba95c69 | 763 | static DEVICE_ATTR(raid_level, S_IRUGO, cciss_show_raid_level, NULL); |
3ff1111d | 764 | |
e272afec SC |
765 | static ssize_t cciss_show_usage_count(struct device *dev, |
766 | struct device_attribute *attr, char *buf) | |
767 | { | |
9cef0d2f SC |
768 | drive_info_struct *drv = to_drv(dev); |
769 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
e272afec SC |
770 | unsigned long flags; |
771 | int count; | |
772 | ||
773 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
774 | if (h->busy_configuring) { | |
775 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
776 | return -EBUSY; | |
777 | } | |
778 | count = drv->usage_count; | |
779 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
780 | return snprintf(buf, 20, "%d\n", count); | |
781 | } | |
8ba95c69 | 782 | static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL); |
e272afec | 783 | |
d6f4965d AP |
784 | static struct attribute *cciss_host_attrs[] = { |
785 | &dev_attr_rescan.attr, | |
786 | NULL | |
787 | }; | |
788 | ||
789 | static struct attribute_group cciss_host_attr_group = { | |
790 | .attrs = cciss_host_attrs, | |
791 | }; | |
792 | ||
9f792d9f | 793 | static const struct attribute_group *cciss_host_attr_groups[] = { |
d6f4965d AP |
794 | &cciss_host_attr_group, |
795 | NULL | |
796 | }; | |
797 | ||
798 | static struct device_type cciss_host_type = { | |
799 | .name = "cciss_host", | |
800 | .groups = cciss_host_attr_groups, | |
617e1344 | 801 | .release = cciss_hba_release, |
d6f4965d AP |
802 | }; |
803 | ||
7fe06326 AP |
804 | static struct attribute *cciss_dev_attrs[] = { |
805 | &dev_attr_unique_id.attr, | |
806 | &dev_attr_model.attr, | |
807 | &dev_attr_vendor.attr, | |
808 | &dev_attr_rev.attr, | |
ce84a8ae | 809 | &dev_attr_lunid.attr, |
3ff1111d | 810 | &dev_attr_raid_level.attr, |
e272afec | 811 | &dev_attr_usage_count.attr, |
7fe06326 AP |
812 | NULL |
813 | }; | |
814 | ||
815 | static struct attribute_group cciss_dev_attr_group = { | |
816 | .attrs = cciss_dev_attrs, | |
817 | }; | |
818 | ||
a4dbd674 | 819 | static const struct attribute_group *cciss_dev_attr_groups[] = { |
7fe06326 AP |
820 | &cciss_dev_attr_group, |
821 | NULL | |
822 | }; | |
823 | ||
824 | static struct device_type cciss_dev_type = { | |
825 | .name = "cciss_device", | |
826 | .groups = cciss_dev_attr_groups, | |
617e1344 | 827 | .release = cciss_device_release, |
7fe06326 AP |
828 | }; |
829 | ||
830 | static struct bus_type cciss_bus_type = { | |
831 | .name = "cciss", | |
832 | }; | |
833 | ||
617e1344 SC |
834 | /* |
835 | * cciss_hba_release is called when the reference count | |
836 | * of h->dev goes to zero. | |
837 | */ | |
838 | static void cciss_hba_release(struct device *dev) | |
839 | { | |
840 | /* | |
841 | * nothing to do, but need this to avoid a warning | |
842 | * about not having a release handler from lib/kref.c. | |
843 | */ | |
844 | } | |
7fe06326 AP |
845 | |
846 | /* | |
847 | * Initialize sysfs entry for each controller. This sets up and registers | |
848 | * the 'cciss#' directory for each individual controller under | |
849 | * /sys/bus/pci/devices/<dev>/. | |
850 | */ | |
851 | static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) | |
852 | { | |
853 | device_initialize(&h->dev); | |
854 | h->dev.type = &cciss_host_type; | |
855 | h->dev.bus = &cciss_bus_type; | |
856 | dev_set_name(&h->dev, "%s", h->devname); | |
857 | h->dev.parent = &h->pdev->dev; | |
858 | ||
859 | return device_add(&h->dev); | |
860 | } | |
861 | ||
862 | /* | |
863 | * Remove sysfs entries for an hba. | |
864 | */ | |
865 | static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) | |
866 | { | |
867 | device_del(&h->dev); | |
617e1344 SC |
868 | put_device(&h->dev); /* final put. */ |
869 | } | |
870 | ||
871 | /* cciss_device_release is called when the reference count | |
9cef0d2f | 872 | * of h->drv[x]dev goes to zero. |
617e1344 SC |
873 | */ |
874 | static void cciss_device_release(struct device *dev) | |
875 | { | |
9cef0d2f SC |
876 | drive_info_struct *drv = to_drv(dev); |
877 | kfree(drv); | |
7fe06326 AP |
878 | } |
879 | ||
880 | /* | |
881 | * Initialize sysfs for each logical drive. This sets up and registers | |
882 | * the 'c#d#' directory for each individual logical drive under | |
883 | * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from | |
884 | * /sys/block/cciss!c#d# to this entry. | |
885 | */ | |
617e1344 | 886 | static long cciss_create_ld_sysfs_entry(struct ctlr_info *h, |
7fe06326 AP |
887 | int drv_index) |
888 | { | |
617e1344 SC |
889 | struct device *dev; |
890 | ||
9cef0d2f | 891 | if (h->drv[drv_index]->device_initialized) |
8ce51966 SC |
892 | return 0; |
893 | ||
9cef0d2f | 894 | dev = &h->drv[drv_index]->dev; |
617e1344 SC |
895 | device_initialize(dev); |
896 | dev->type = &cciss_dev_type; | |
897 | dev->bus = &cciss_bus_type; | |
898 | dev_set_name(dev, "c%dd%d", h->ctlr, drv_index); | |
899 | dev->parent = &h->dev; | |
9cef0d2f | 900 | h->drv[drv_index]->device_initialized = 1; |
617e1344 | 901 | return device_add(dev); |
7fe06326 AP |
902 | } |
903 | ||
904 | /* | |
905 | * Remove sysfs entries for a logical drive. | |
906 | */ | |
8ce51966 SC |
907 | static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index, |
908 | int ctlr_exiting) | |
7fe06326 | 909 | { |
9cef0d2f | 910 | struct device *dev = &h->drv[drv_index]->dev; |
8ce51966 SC |
911 | |
912 | /* special case for c*d0, we only destroy it on controller exit */ | |
913 | if (drv_index == 0 && !ctlr_exiting) | |
914 | return; | |
915 | ||
617e1344 SC |
916 | device_del(dev); |
917 | put_device(dev); /* the "final" put. */ | |
9cef0d2f | 918 | h->drv[drv_index] = NULL; |
7fe06326 AP |
919 | } |
920 | ||
7c832835 BH |
921 | /* |
922 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 923 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
924 | * which ones are free or in use. For operations that can wait for kmalloc |
925 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
926 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
927 | */ | |
928 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
929 | { |
930 | CommandList_struct *c; | |
7c832835 | 931 | int i; |
1da177e4 LT |
932 | u64bit temp64; |
933 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
934 | ||
7c832835 BH |
935 | if (!get_from_pool) { |
936 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
937 | sizeof(CommandList_struct), &cmd_dma_handle); | |
938 | if (c == NULL) | |
939 | return NULL; | |
1da177e4 LT |
940 | memset(c, 0, sizeof(CommandList_struct)); |
941 | ||
33079b21 MM |
942 | c->cmdindex = -1; |
943 | ||
7c832835 BH |
944 | c->err_info = (ErrorInfo_struct *) |
945 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
946 | &err_dma_handle); | |
947 | ||
948 | if (c->err_info == NULL) { | |
949 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
950 | sizeof(CommandList_struct), c, cmd_dma_handle); |
951 | return NULL; | |
952 | } | |
953 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
954 | } else { /* get it out of the controllers pool */ |
955 | ||
956 | do { | |
f880632f MM |
957 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
958 | if (i == h->nr_cmds) | |
7c832835 BH |
959 | return NULL; |
960 | } while (test_and_set_bit | |
961 | (i & (BITS_PER_LONG - 1), | |
962 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
963 | #ifdef CCISS_DEBUG |
964 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
965 | #endif | |
7c832835 | 966 | c = h->cmd_pool + i; |
1da177e4 | 967 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
968 | cmd_dma_handle = h->cmd_pool_dhandle |
969 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
970 | c->err_info = h->errinfo_pool + i; |
971 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
972 | err_dma_handle = h->errinfo_pool_dhandle |
973 | + i * sizeof(ErrorInfo_struct); | |
974 | h->nr_allocs++; | |
33079b21 MM |
975 | |
976 | c->cmdindex = i; | |
7c832835 | 977 | } |
1da177e4 | 978 | |
8a3173de | 979 | INIT_HLIST_NODE(&c->list); |
1da177e4 | 980 | c->busaddr = (__u32) cmd_dma_handle; |
7c832835 | 981 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
982 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
983 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
984 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 985 | |
7c832835 BH |
986 | c->ctlr = h->ctlr; |
987 | return c; | |
1da177e4 LT |
988 | } |
989 | ||
7c832835 BH |
990 | /* |
991 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
992 | */ |
993 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
994 | { | |
995 | int i; | |
996 | u64bit temp64; | |
997 | ||
7c832835 | 998 | if (!got_from_pool) { |
1da177e4 LT |
999 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
1000 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
1001 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
1002 | c->err_info, (dma_addr_t) temp64.val); | |
1003 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
1004 | c, (dma_addr_t) c->busaddr); | |
1005 | } else { | |
1da177e4 | 1006 | i = c - h->cmd_pool; |
7c832835 BH |
1007 | clear_bit(i & (BITS_PER_LONG - 1), |
1008 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
1009 | h->nr_frees++; | |
1010 | } | |
1da177e4 LT |
1011 | } |
1012 | ||
1013 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
1014 | { | |
7c832835 | 1015 | return disk->queue->queuedata; |
1da177e4 LT |
1016 | } |
1017 | ||
1018 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
1019 | { | |
1020 | return disk->private_data; | |
1021 | } | |
1022 | ||
1023 | /* | |
1024 | * Open. Make sure the device is really there. | |
1025 | */ | |
ef7822c2 | 1026 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
1da177e4 | 1027 | { |
ef7822c2 AV |
1028 | ctlr_info_t *host = get_host(bdev->bd_disk); |
1029 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1da177e4 LT |
1030 | |
1031 | #ifdef CCISS_DEBUG | |
ef7822c2 | 1032 | printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name); |
7c832835 | 1033 | #endif /* CCISS_DEBUG */ |
1da177e4 | 1034 | |
2e043986 | 1035 | if (drv->busy_configuring) |
ddd47442 | 1036 | return -EBUSY; |
1da177e4 LT |
1037 | /* |
1038 | * Root is allowed to open raw volume zero even if it's not configured | |
1039 | * so array config can still work. Root is also allowed to open any | |
1040 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
1041 | * disk information. I don't think I really like this | |
1042 | * but I'm already using way to many device nodes to claim another one | |
1043 | * for "raw controller". | |
1044 | */ | |
7a06f789 | 1045 | if (drv->heads == 0) { |
ef7822c2 | 1046 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
1da177e4 | 1047 | /* if not node 0 make sure it is a partition = 0 */ |
ef7822c2 | 1048 | if (MINOR(bdev->bd_dev) & 0x0f) { |
7c832835 | 1049 | return -ENXIO; |
1da177e4 | 1050 | /* if it is, make sure we have a LUN ID */ |
39ccf9a6 SC |
1051 | } else if (memcmp(drv->LunID, CTLR_LUNID, |
1052 | sizeof(drv->LunID))) { | |
1da177e4 LT |
1053 | return -ENXIO; |
1054 | } | |
1055 | } | |
1056 | if (!capable(CAP_SYS_ADMIN)) | |
1057 | return -EPERM; | |
1058 | } | |
1059 | drv->usage_count++; | |
1060 | host->usage_count++; | |
1061 | return 0; | |
1062 | } | |
7c832835 | 1063 | |
1da177e4 LT |
1064 | /* |
1065 | * Close. Sync first. | |
1066 | */ | |
ef7822c2 | 1067 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
1da177e4 | 1068 | { |
ef7822c2 AV |
1069 | ctlr_info_t *host = get_host(disk); |
1070 | drive_info_struct *drv = get_drv(disk); | |
1da177e4 LT |
1071 | |
1072 | #ifdef CCISS_DEBUG | |
ef7822c2 | 1073 | printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name); |
7c832835 | 1074 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
1075 | |
1076 | drv->usage_count--; | |
1077 | host->usage_count--; | |
1078 | return 0; | |
1079 | } | |
1080 | ||
1081 | #ifdef CONFIG_COMPAT | |
1082 | ||
ef7822c2 AV |
1083 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
1084 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1085 | { |
1086 | int ret; | |
1087 | lock_kernel(); | |
ef7822c2 | 1088 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
1089 | unlock_kernel(); |
1090 | return ret; | |
1091 | } | |
1092 | ||
ef7822c2 AV |
1093 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
1094 | unsigned cmd, unsigned long arg); | |
1095 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, | |
1096 | unsigned cmd, unsigned long arg); | |
1da177e4 | 1097 | |
ef7822c2 AV |
1098 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
1099 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1100 | { |
1101 | switch (cmd) { | |
1102 | case CCISS_GETPCIINFO: | |
1103 | case CCISS_GETINTINFO: | |
1104 | case CCISS_SETINTINFO: | |
1105 | case CCISS_GETNODENAME: | |
1106 | case CCISS_SETNODENAME: | |
1107 | case CCISS_GETHEARTBEAT: | |
1108 | case CCISS_GETBUSTYPES: | |
1109 | case CCISS_GETFIRMVER: | |
1110 | case CCISS_GETDRIVVER: | |
1111 | case CCISS_REVALIDVOLS: | |
1112 | case CCISS_DEREGDISK: | |
1113 | case CCISS_REGNEWDISK: | |
1114 | case CCISS_REGNEWD: | |
1115 | case CCISS_RESCANDISK: | |
1116 | case CCISS_GETLUNINFO: | |
ef7822c2 | 1117 | return do_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
1118 | |
1119 | case CCISS_PASSTHRU32: | |
ef7822c2 | 1120 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
1da177e4 | 1121 | case CCISS_BIG_PASSTHRU32: |
ef7822c2 | 1122 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
1da177e4 LT |
1123 | |
1124 | default: | |
1125 | return -ENOIOCTLCMD; | |
1126 | } | |
1127 | } | |
1128 | ||
ef7822c2 AV |
1129 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
1130 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1131 | { |
1132 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 1133 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
1134 | IOCTL_Command_struct arg64; |
1135 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
1136 | int err; | |
1137 | u32 cp; | |
1138 | ||
1139 | err = 0; | |
7c832835 BH |
1140 | err |= |
1141 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1142 | sizeof(arg64.LUN_info)); | |
1143 | err |= | |
1144 | copy_from_user(&arg64.Request, &arg32->Request, | |
1145 | sizeof(arg64.Request)); | |
1146 | err |= | |
1147 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1148 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1149 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1150 | err |= get_user(cp, &arg32->buf); | |
1151 | arg64.buf = compat_ptr(cp); | |
1152 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1153 | ||
1154 | if (err) | |
1155 | return -EFAULT; | |
1156 | ||
ef7822c2 | 1157 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1158 | if (err) |
1159 | return err; | |
7c832835 BH |
1160 | err |= |
1161 | copy_in_user(&arg32->error_info, &p->error_info, | |
1162 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1163 | if (err) |
1164 | return -EFAULT; | |
1165 | return err; | |
1166 | } | |
1167 | ||
ef7822c2 AV |
1168 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
1169 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1170 | { |
1171 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 1172 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 1173 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
1174 | BIG_IOCTL_Command_struct __user *p = |
1175 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
1176 | int err; |
1177 | u32 cp; | |
1178 | ||
1179 | err = 0; | |
7c832835 BH |
1180 | err |= |
1181 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1182 | sizeof(arg64.LUN_info)); | |
1183 | err |= | |
1184 | copy_from_user(&arg64.Request, &arg32->Request, | |
1185 | sizeof(arg64.Request)); | |
1186 | err |= | |
1187 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1188 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1189 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1190 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
1191 | err |= get_user(cp, &arg32->buf); | |
1192 | arg64.buf = compat_ptr(cp); | |
1193 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1194 | ||
1195 | if (err) | |
7c832835 | 1196 | return -EFAULT; |
1da177e4 | 1197 | |
ef7822c2 | 1198 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1199 | if (err) |
1200 | return err; | |
7c832835 BH |
1201 | err |= |
1202 | copy_in_user(&arg32->error_info, &p->error_info, | |
1203 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1204 | if (err) |
1205 | return -EFAULT; | |
1206 | return err; | |
1207 | } | |
1208 | #endif | |
a885c8c4 CH |
1209 | |
1210 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
1211 | { | |
1212 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1213 | ||
1214 | if (!drv->cylinders) | |
1215 | return -ENXIO; | |
1216 | ||
1217 | geo->heads = drv->heads; | |
1218 | geo->sectors = drv->sectors; | |
1219 | geo->cylinders = drv->cylinders; | |
1220 | return 0; | |
1221 | } | |
1222 | ||
0a9279cc MM |
1223 | static void check_ioctl_unit_attention(ctlr_info_t *host, CommandList_struct *c) |
1224 | { | |
1225 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
1226 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) | |
1227 | (void)check_for_unit_attention(host, c); | |
1228 | } | |
1da177e4 | 1229 | /* |
7c832835 | 1230 | * ioctl |
1da177e4 | 1231 | */ |
ef7822c2 | 1232 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
7c832835 | 1233 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1234 | { |
1da177e4 LT |
1235 | struct gendisk *disk = bdev->bd_disk; |
1236 | ctlr_info_t *host = get_host(disk); | |
1237 | drive_info_struct *drv = get_drv(disk); | |
1238 | int ctlr = host->ctlr; | |
1239 | void __user *argp = (void __user *)arg; | |
1240 | ||
1241 | #ifdef CCISS_DEBUG | |
1242 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
1243 | #endif /* CCISS_DEBUG */ |
1244 | ||
1245 | switch (cmd) { | |
1da177e4 | 1246 | case CCISS_GETPCIINFO: |
7c832835 BH |
1247 | { |
1248 | cciss_pci_info_struct pciinfo; | |
1249 | ||
1250 | if (!arg) | |
1251 | return -EINVAL; | |
1252 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
1253 | pciinfo.bus = host->pdev->bus->number; | |
1254 | pciinfo.dev_fn = host->pdev->devfn; | |
1255 | pciinfo.board_id = host->board_id; | |
1256 | if (copy_to_user | |
1257 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
1258 | return -EFAULT; | |
1259 | return 0; | |
1260 | } | |
1da177e4 | 1261 | case CCISS_GETINTINFO: |
7c832835 BH |
1262 | { |
1263 | cciss_coalint_struct intinfo; | |
1264 | if (!arg) | |
1265 | return -EINVAL; | |
1266 | intinfo.delay = | |
1267 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
1268 | intinfo.count = | |
1269 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
1270 | if (copy_to_user | |
1271 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
1272 | return -EFAULT; | |
1273 | return 0; | |
1274 | } | |
1da177e4 | 1275 | case CCISS_SETINTINFO: |
1da177e4 | 1276 | { |
7c832835 BH |
1277 | cciss_coalint_struct intinfo; |
1278 | unsigned long flags; | |
1279 | int i; | |
1280 | ||
1281 | if (!arg) | |
1282 | return -EINVAL; | |
1283 | if (!capable(CAP_SYS_ADMIN)) | |
1284 | return -EPERM; | |
1285 | if (copy_from_user | |
1286 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
1287 | return -EFAULT; | |
1288 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
1289 | { | |
1290 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
1291 | return -EINVAL; | |
1292 | } | |
1293 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1294 | /* Update the field, and then ring the doorbell */ | |
1295 | writel(intinfo.delay, | |
1296 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
1297 | writel(intinfo.count, | |
1298 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
1299 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
1300 | ||
1301 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1302 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
1303 | & CFGTBL_ChangeReq)) | |
1304 | break; | |
1305 | /* delay and try again */ | |
1306 | udelay(1000); | |
1307 | } | |
1308 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1309 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1310 | return -EAGAIN; | |
1311 | return 0; | |
1da177e4 | 1312 | } |
1da177e4 | 1313 | case CCISS_GETNODENAME: |
7c832835 BH |
1314 | { |
1315 | NodeName_type NodeName; | |
1316 | int i; | |
1317 | ||
1318 | if (!arg) | |
1319 | return -EINVAL; | |
1320 | for (i = 0; i < 16; i++) | |
1321 | NodeName[i] = | |
1322 | readb(&host->cfgtable->ServerName[i]); | |
1323 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
1324 | return -EFAULT; | |
1325 | return 0; | |
1326 | } | |
1da177e4 | 1327 | case CCISS_SETNODENAME: |
7c832835 BH |
1328 | { |
1329 | NodeName_type NodeName; | |
1330 | unsigned long flags; | |
1331 | int i; | |
1332 | ||
1333 | if (!arg) | |
1334 | return -EINVAL; | |
1335 | if (!capable(CAP_SYS_ADMIN)) | |
1336 | return -EPERM; | |
1337 | ||
1338 | if (copy_from_user | |
1339 | (NodeName, argp, sizeof(NodeName_type))) | |
1340 | return -EFAULT; | |
1341 | ||
1342 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1343 | ||
1344 | /* Update the field, and then ring the doorbell */ | |
1345 | for (i = 0; i < 16; i++) | |
1346 | writeb(NodeName[i], | |
1347 | &host->cfgtable->ServerName[i]); | |
1348 | ||
1349 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
1350 | ||
1351 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1352 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
1353 | & CFGTBL_ChangeReq)) | |
1354 | break; | |
1355 | /* delay and try again */ | |
1356 | udelay(1000); | |
1357 | } | |
1358 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1359 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1360 | return -EAGAIN; | |
1361 | return 0; | |
1362 | } | |
1da177e4 LT |
1363 | |
1364 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
1365 | { |
1366 | Heartbeat_type heartbeat; | |
1367 | ||
1368 | if (!arg) | |
1369 | return -EINVAL; | |
1370 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
1371 | if (copy_to_user | |
1372 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
1373 | return -EFAULT; | |
1374 | return 0; | |
1375 | } | |
1da177e4 | 1376 | case CCISS_GETBUSTYPES: |
7c832835 BH |
1377 | { |
1378 | BusTypes_type BusTypes; | |
1379 | ||
1380 | if (!arg) | |
1381 | return -EINVAL; | |
1382 | BusTypes = readl(&host->cfgtable->BusTypes); | |
1383 | if (copy_to_user | |
1384 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
1385 | return -EFAULT; | |
1386 | return 0; | |
1387 | } | |
1da177e4 | 1388 | case CCISS_GETFIRMVER: |
7c832835 BH |
1389 | { |
1390 | FirmwareVer_type firmware; | |
1da177e4 | 1391 | |
7c832835 BH |
1392 | if (!arg) |
1393 | return -EINVAL; | |
1394 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 1395 | |
7c832835 BH |
1396 | if (copy_to_user |
1397 | (argp, firmware, sizeof(FirmwareVer_type))) | |
1398 | return -EFAULT; | |
1399 | return 0; | |
1400 | } | |
1401 | case CCISS_GETDRIVVER: | |
1402 | { | |
1403 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 1404 | |
7c832835 BH |
1405 | if (!arg) |
1406 | return -EINVAL; | |
1da177e4 | 1407 | |
7c832835 BH |
1408 | if (copy_to_user |
1409 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
1410 | return -EFAULT; | |
1411 | return 0; | |
1412 | } | |
1da177e4 | 1413 | |
6ae5ce8e MM |
1414 | case CCISS_DEREGDISK: |
1415 | case CCISS_REGNEWD: | |
1da177e4 | 1416 | case CCISS_REVALIDVOLS: |
2d11d993 | 1417 | return rebuild_lun_table(host, 0, 1); |
7c832835 BH |
1418 | |
1419 | case CCISS_GETLUNINFO:{ | |
1420 | LogvolInfo_struct luninfo; | |
1421 | ||
39ccf9a6 SC |
1422 | memcpy(&luninfo.LunID, drv->LunID, |
1423 | sizeof(luninfo.LunID)); | |
7c832835 BH |
1424 | luninfo.num_opens = drv->usage_count; |
1425 | luninfo.num_parts = 0; | |
1426 | if (copy_to_user(argp, &luninfo, | |
1427 | sizeof(LogvolInfo_struct))) | |
1428 | return -EFAULT; | |
1429 | return 0; | |
1430 | } | |
1da177e4 | 1431 | case CCISS_PASSTHRU: |
1da177e4 | 1432 | { |
7c832835 BH |
1433 | IOCTL_Command_struct iocommand; |
1434 | CommandList_struct *c; | |
1435 | char *buff = NULL; | |
1436 | u64bit temp64; | |
6e9a4738 | 1437 | DECLARE_COMPLETION_ONSTACK(wait); |
1da177e4 | 1438 | |
7c832835 BH |
1439 | if (!arg) |
1440 | return -EINVAL; | |
1da177e4 | 1441 | |
7c832835 BH |
1442 | if (!capable(CAP_SYS_RAWIO)) |
1443 | return -EPERM; | |
1da177e4 | 1444 | |
7c832835 BH |
1445 | if (copy_from_user |
1446 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
1447 | return -EFAULT; | |
1448 | if ((iocommand.buf_size < 1) && | |
1449 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
1450 | return -EINVAL; | |
1451 | } | |
1452 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
1453 | /* Check kmalloc limits */ | |
1454 | if (iocommand.buf_size > 128000) | |
1455 | return -EINVAL; | |
1456 | #endif | |
1457 | if (iocommand.buf_size > 0) { | |
1458 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
1459 | if (buff == NULL) | |
1460 | return -EFAULT; | |
1461 | } | |
1462 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
1463 | /* Copy the data into the buffer we created */ | |
1464 | if (copy_from_user | |
1465 | (buff, iocommand.buf, iocommand.buf_size)) { | |
1466 | kfree(buff); | |
1467 | return -EFAULT; | |
1468 | } | |
1469 | } else { | |
1470 | memset(buff, 0, iocommand.buf_size); | |
1471 | } | |
1472 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1473 | kfree(buff); | |
1474 | return -ENOMEM; | |
1475 | } | |
b028461d | 1476 | /* Fill in the command type */ |
7c832835 | 1477 | c->cmd_type = CMD_IOCTL_PEND; |
b028461d | 1478 | /* Fill in Command Header */ |
1479 | c->Header.ReplyQueue = 0; /* unused in simple mode */ | |
1480 | if (iocommand.buf_size > 0) /* buffer to fill */ | |
7c832835 BH |
1481 | { |
1482 | c->Header.SGList = 1; | |
1483 | c->Header.SGTotal = 1; | |
b028461d | 1484 | } else /* no buffers to fill */ |
7c832835 BH |
1485 | { |
1486 | c->Header.SGList = 0; | |
1487 | c->Header.SGTotal = 0; | |
1488 | } | |
1489 | c->Header.LUN = iocommand.LUN_info; | |
b028461d | 1490 | /* use the kernel address the cmd block for tag */ |
1491 | c->Header.Tag.lower = c->busaddr; | |
1da177e4 | 1492 | |
b028461d | 1493 | /* Fill in Request block */ |
7c832835 | 1494 | c->Request = iocommand.Request; |
1da177e4 | 1495 | |
b028461d | 1496 | /* Fill in the scatter gather information */ |
7c832835 BH |
1497 | if (iocommand.buf_size > 0) { |
1498 | temp64.val = pci_map_single(host->pdev, buff, | |
1499 | iocommand.buf_size, | |
1500 | PCI_DMA_BIDIRECTIONAL); | |
1501 | c->SG[0].Addr.lower = temp64.val32.lower; | |
1502 | c->SG[0].Addr.upper = temp64.val32.upper; | |
1503 | c->SG[0].Len = iocommand.buf_size; | |
b028461d | 1504 | c->SG[0].Ext = 0; /* we are not chaining */ |
7c832835 BH |
1505 | } |
1506 | c->waiting = &wait; | |
1507 | ||
664a717d | 1508 | enqueue_cmd_and_start_io(host, c); |
7c832835 BH |
1509 | wait_for_completion(&wait); |
1510 | ||
1511 | /* unlock the buffers from DMA */ | |
1512 | temp64.val32.lower = c->SG[0].Addr.lower; | |
1513 | temp64.val32.upper = c->SG[0].Addr.upper; | |
1514 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
1515 | iocommand.buf_size, | |
1516 | PCI_DMA_BIDIRECTIONAL); | |
1517 | ||
0a9279cc MM |
1518 | check_ioctl_unit_attention(host, c); |
1519 | ||
7c832835 BH |
1520 | /* Copy the error information out */ |
1521 | iocommand.error_info = *(c->err_info); | |
1522 | if (copy_to_user | |
1523 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
1524 | kfree(buff); | |
1da177e4 LT |
1525 | cmd_free(host, c, 0); |
1526 | return -EFAULT; | |
1527 | } | |
7c832835 BH |
1528 | |
1529 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
1530 | /* Copy the data out of the buffer we created */ | |
1531 | if (copy_to_user | |
1532 | (iocommand.buf, buff, iocommand.buf_size)) { | |
1533 | kfree(buff); | |
1534 | cmd_free(host, c, 0); | |
1535 | return -EFAULT; | |
1536 | } | |
1537 | } | |
1538 | kfree(buff); | |
1539 | cmd_free(host, c, 0); | |
1540 | return 0; | |
1da177e4 | 1541 | } |
7c832835 BH |
1542 | case CCISS_BIG_PASSTHRU:{ |
1543 | BIG_IOCTL_Command_struct *ioc; | |
1544 | CommandList_struct *c; | |
1545 | unsigned char **buff = NULL; | |
1546 | int *buff_size = NULL; | |
1547 | u64bit temp64; | |
7c832835 BH |
1548 | BYTE sg_used = 0; |
1549 | int status = 0; | |
1550 | int i; | |
6e9a4738 | 1551 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1552 | __u32 left; |
1553 | __u32 sz; | |
1554 | BYTE __user *data_ptr; | |
1555 | ||
1556 | if (!arg) | |
1557 | return -EINVAL; | |
1558 | if (!capable(CAP_SYS_RAWIO)) | |
1559 | return -EPERM; | |
1560 | ioc = (BIG_IOCTL_Command_struct *) | |
1561 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1562 | if (!ioc) { | |
1563 | status = -ENOMEM; | |
1564 | goto cleanup1; | |
1565 | } | |
1566 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1567 | status = -EFAULT; | |
1568 | goto cleanup1; | |
1569 | } | |
1570 | if ((ioc->buf_size < 1) && | |
1571 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1572 | status = -EINVAL; |
1573 | goto cleanup1; | |
7c832835 BH |
1574 | } |
1575 | /* Check kmalloc limits using all SGs */ | |
1576 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1577 | status = -EINVAL; | |
1578 | goto cleanup1; | |
1579 | } | |
1580 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1581 | status = -EINVAL; | |
1582 | goto cleanup1; | |
1583 | } | |
1584 | buff = | |
1585 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1586 | if (!buff) { | |
1da177e4 LT |
1587 | status = -ENOMEM; |
1588 | goto cleanup1; | |
1589 | } | |
5cbded58 | 1590 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
7c832835 BH |
1591 | GFP_KERNEL); |
1592 | if (!buff_size) { | |
1593 | status = -ENOMEM; | |
1594 | goto cleanup1; | |
1595 | } | |
1596 | left = ioc->buf_size; | |
1597 | data_ptr = ioc->buf; | |
1598 | while (left) { | |
1599 | sz = (left > | |
1600 | ioc->malloc_size) ? ioc-> | |
1601 | malloc_size : left; | |
1602 | buff_size[sg_used] = sz; | |
1603 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1604 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1605 | status = -ENOMEM; |
15534d38 JA |
1606 | goto cleanup1; |
1607 | } | |
7c832835 BH |
1608 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1609 | if (copy_from_user | |
1610 | (buff[sg_used], data_ptr, sz)) { | |
f7108f91 | 1611 | status = -EFAULT; |
7c832835 BH |
1612 | goto cleanup1; |
1613 | } | |
1614 | } else { | |
1615 | memset(buff[sg_used], 0, sz); | |
1616 | } | |
1617 | left -= sz; | |
1618 | data_ptr += sz; | |
1619 | sg_used++; | |
1620 | } | |
1621 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1622 | status = -ENOMEM; | |
1623 | goto cleanup1; | |
1624 | } | |
1625 | c->cmd_type = CMD_IOCTL_PEND; | |
1626 | c->Header.ReplyQueue = 0; | |
1627 | ||
1628 | if (ioc->buf_size > 0) { | |
1629 | c->Header.SGList = sg_used; | |
1630 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1631 | } else { |
7c832835 BH |
1632 | c->Header.SGList = 0; |
1633 | c->Header.SGTotal = 0; | |
1da177e4 | 1634 | } |
7c832835 BH |
1635 | c->Header.LUN = ioc->LUN_info; |
1636 | c->Header.Tag.lower = c->busaddr; | |
1637 | ||
1638 | c->Request = ioc->Request; | |
1639 | if (ioc->buf_size > 0) { | |
7c832835 BH |
1640 | for (i = 0; i < sg_used; i++) { |
1641 | temp64.val = | |
1642 | pci_map_single(host->pdev, buff[i], | |
1643 | buff_size[i], | |
1644 | PCI_DMA_BIDIRECTIONAL); | |
1645 | c->SG[i].Addr.lower = | |
1646 | temp64.val32.lower; | |
1647 | c->SG[i].Addr.upper = | |
1648 | temp64.val32.upper; | |
1649 | c->SG[i].Len = buff_size[i]; | |
1650 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1651 | } | |
1652 | } | |
1653 | c->waiting = &wait; | |
664a717d | 1654 | enqueue_cmd_and_start_io(host, c); |
7c832835 BH |
1655 | wait_for_completion(&wait); |
1656 | /* unlock the buffers from DMA */ | |
1657 | for (i = 0; i < sg_used; i++) { | |
1658 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1659 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1660 | pci_unmap_single(host->pdev, | |
1661 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1662 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1663 | } |
0a9279cc | 1664 | check_ioctl_unit_attention(host, c); |
7c832835 BH |
1665 | /* Copy the error information out */ |
1666 | ioc->error_info = *(c->err_info); | |
1667 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1668 | cmd_free(host, c, 0); | |
1669 | status = -EFAULT; | |
1670 | goto cleanup1; | |
1671 | } | |
1672 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1673 | /* Copy the data out of the buffer we created */ | |
1674 | BYTE __user *ptr = ioc->buf; | |
1675 | for (i = 0; i < sg_used; i++) { | |
1676 | if (copy_to_user | |
1677 | (ptr, buff[i], buff_size[i])) { | |
1678 | cmd_free(host, c, 0); | |
1679 | status = -EFAULT; | |
1680 | goto cleanup1; | |
1681 | } | |
1682 | ptr += buff_size[i]; | |
1da177e4 | 1683 | } |
1da177e4 | 1684 | } |
7c832835 BH |
1685 | cmd_free(host, c, 0); |
1686 | status = 0; | |
1687 | cleanup1: | |
1688 | if (buff) { | |
1689 | for (i = 0; i < sg_used; i++) | |
1690 | kfree(buff[i]); | |
1691 | kfree(buff); | |
1692 | } | |
1693 | kfree(buff_size); | |
1694 | kfree(ioc); | |
1695 | return status; | |
1da177e4 | 1696 | } |
03bbfee5 MMOD |
1697 | |
1698 | /* scsi_cmd_ioctl handles these, below, though some are not */ | |
1699 | /* very meaningful for cciss. SG_IO is the main one people want. */ | |
1700 | ||
1701 | case SG_GET_VERSION_NUM: | |
1702 | case SG_SET_TIMEOUT: | |
1703 | case SG_GET_TIMEOUT: | |
1704 | case SG_GET_RESERVED_SIZE: | |
1705 | case SG_SET_RESERVED_SIZE: | |
1706 | case SG_EMULATED_HOST: | |
1707 | case SG_IO: | |
1708 | case SCSI_IOCTL_SEND_COMMAND: | |
ef7822c2 | 1709 | return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
03bbfee5 MMOD |
1710 | |
1711 | /* scsi_cmd_ioctl would normally handle these, below, but */ | |
1712 | /* they aren't a good fit for cciss, as CD-ROMs are */ | |
1713 | /* not supported, and we don't have any bus/target/lun */ | |
1714 | /* which we present to the kernel. */ | |
1715 | ||
1716 | case CDROM_SEND_PACKET: | |
1717 | case CDROMCLOSETRAY: | |
1718 | case CDROMEJECT: | |
1719 | case SCSI_IOCTL_GET_IDLUN: | |
1720 | case SCSI_IOCTL_GET_BUS_NUMBER: | |
1da177e4 LT |
1721 | default: |
1722 | return -ENOTTY; | |
1723 | } | |
1da177e4 LT |
1724 | } |
1725 | ||
7b30f092 JA |
1726 | static void cciss_check_queues(ctlr_info_t *h) |
1727 | { | |
1728 | int start_queue = h->next_to_run; | |
1729 | int i; | |
1730 | ||
1731 | /* check to see if we have maxed out the number of commands that can | |
1732 | * be placed on the queue. If so then exit. We do this check here | |
1733 | * in case the interrupt we serviced was from an ioctl and did not | |
1734 | * free any new commands. | |
1735 | */ | |
f880632f | 1736 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1737 | return; |
1738 | ||
1739 | /* We have room on the queue for more commands. Now we need to queue | |
1740 | * them up. We will also keep track of the next queue to run so | |
1741 | * that every queue gets a chance to be started first. | |
1742 | */ | |
1743 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1744 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1745 | /* make sure the disk has been added and the drive is real | |
1746 | * because this can be called from the middle of init_one. | |
1747 | */ | |
9cef0d2f SC |
1748 | if (!h->drv[curr_queue]) |
1749 | continue; | |
1750 | if (!(h->drv[curr_queue]->queue) || | |
1751 | !(h->drv[curr_queue]->heads)) | |
7b30f092 JA |
1752 | continue; |
1753 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1754 | ||
1755 | /* check to see if we have maxed out the number of commands | |
1756 | * that can be placed on the queue. | |
1757 | */ | |
f880632f | 1758 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1759 | if (curr_queue == start_queue) { |
1760 | h->next_to_run = | |
1761 | (start_queue + 1) % (h->highest_lun + 1); | |
1762 | break; | |
1763 | } else { | |
1764 | h->next_to_run = curr_queue; | |
1765 | break; | |
1766 | } | |
7b30f092 JA |
1767 | } |
1768 | } | |
1769 | } | |
1770 | ||
ca1e0484 MM |
1771 | static void cciss_softirq_done(struct request *rq) |
1772 | { | |
1773 | CommandList_struct *cmd = rq->completion_data; | |
1774 | ctlr_info_t *h = hba[cmd->ctlr]; | |
5c07a311 | 1775 | SGDescriptor_struct *curr_sg = cmd->SG; |
ca1e0484 | 1776 | u64bit temp64; |
664a717d | 1777 | unsigned long flags; |
ca1e0484 | 1778 | int i, ddir; |
5c07a311 | 1779 | int sg_index = 0; |
ca1e0484 MM |
1780 | |
1781 | if (cmd->Request.Type.Direction == XFER_READ) | |
1782 | ddir = PCI_DMA_FROMDEVICE; | |
1783 | else | |
1784 | ddir = PCI_DMA_TODEVICE; | |
1785 | ||
1786 | /* command did not need to be retried */ | |
1787 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1788 | for (i = 0; i < cmd->Header.SGList; i++) { |
5c07a311 | 1789 | if (curr_sg[sg_index].Ext == CCISS_SG_CHAIN) { |
d45033ef | 1790 | cciss_unmap_sg_chain_block(h, cmd); |
5c07a311 | 1791 | /* Point to the next block */ |
dccc9b56 | 1792 | curr_sg = h->cmd_sg_list[cmd->cmdindex]; |
5c07a311 DB |
1793 | sg_index = 0; |
1794 | } | |
1795 | temp64.val32.lower = curr_sg[sg_index].Addr.lower; | |
1796 | temp64.val32.upper = curr_sg[sg_index].Addr.upper; | |
1797 | pci_unmap_page(h->pdev, temp64.val, curr_sg[sg_index].Len, | |
1798 | ddir); | |
1799 | ++sg_index; | |
ca1e0484 MM |
1800 | } |
1801 | ||
ca1e0484 MM |
1802 | #ifdef CCISS_DEBUG |
1803 | printk("Done with %p\n", rq); | |
7c832835 | 1804 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1805 | |
c3a4d78c | 1806 | /* set the residual count for pc requests */ |
ac44e5b2 | 1807 | if (blk_pc_request(rq)) |
c3a4d78c | 1808 | rq->resid_len = cmd->err_info->ResidualCnt; |
ac44e5b2 | 1809 | |
c3a4d78c | 1810 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
3daeea29 | 1811 | |
ca1e0484 | 1812 | spin_lock_irqsave(&h->lock, flags); |
7c832835 | 1813 | cmd_free(h, cmd, 1); |
7b30f092 | 1814 | cciss_check_queues(h); |
ca1e0484 MM |
1815 | spin_unlock_irqrestore(&h->lock, flags); |
1816 | } | |
1817 | ||
39ccf9a6 SC |
1818 | static inline void log_unit_to_scsi3addr(ctlr_info_t *h, |
1819 | unsigned char scsi3addr[], uint32_t log_unit) | |
b57695fe | 1820 | { |
9cef0d2f SC |
1821 | memcpy(scsi3addr, h->drv[log_unit]->LunID, |
1822 | sizeof(h->drv[log_unit]->LunID)); | |
b57695fe | 1823 | } |
1824 | ||
7fe06326 AP |
1825 | /* This function gets the SCSI vendor, model, and revision of a logical drive |
1826 | * via the inquiry page 0. Model, vendor, and rev are set to empty strings if | |
1827 | * they cannot be read. | |
1828 | */ | |
7b838bde | 1829 | static void cciss_get_device_descr(int ctlr, int logvol, |
7fe06326 AP |
1830 | char *vendor, char *model, char *rev) |
1831 | { | |
1832 | int rc; | |
1833 | InquiryData_struct *inq_buf; | |
b57695fe | 1834 | unsigned char scsi3addr[8]; |
7fe06326 AP |
1835 | |
1836 | *vendor = '\0'; | |
1837 | *model = '\0'; | |
1838 | *rev = '\0'; | |
1839 | ||
1840 | inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
1841 | if (!inq_buf) | |
1842 | return; | |
1843 | ||
b57695fe | 1844 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
1845 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buf, sizeof(*inq_buf), 0, |
1846 | scsi3addr, TYPE_CMD); | |
7fe06326 AP |
1847 | if (rc == IO_OK) { |
1848 | memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); | |
1849 | vendor[VENDOR_LEN] = '\0'; | |
1850 | memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); | |
1851 | model[MODEL_LEN] = '\0'; | |
1852 | memcpy(rev, &inq_buf->data_byte[32], REV_LEN); | |
1853 | rev[REV_LEN] = '\0'; | |
1854 | } | |
1855 | ||
1856 | kfree(inq_buf); | |
1857 | return; | |
1858 | } | |
1859 | ||
a72da29b MM |
1860 | /* This function gets the serial number of a logical drive via |
1861 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial | |
1862 | * number cannot be had, for whatever reason, 16 bytes of 0xff | |
1863 | * are returned instead. | |
1864 | */ | |
7b838bde | 1865 | static void cciss_get_serial_no(int ctlr, int logvol, |
a72da29b MM |
1866 | unsigned char *serial_no, int buflen) |
1867 | { | |
1868 | #define PAGE_83_INQ_BYTES 64 | |
1869 | int rc; | |
1870 | unsigned char *buf; | |
b57695fe | 1871 | unsigned char scsi3addr[8]; |
a72da29b MM |
1872 | |
1873 | if (buflen > 16) | |
1874 | buflen = 16; | |
1875 | memset(serial_no, 0xff, buflen); | |
1876 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); | |
1877 | if (!buf) | |
1878 | return; | |
1879 | memset(serial_no, 0, buflen); | |
b57695fe | 1880 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
1881 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf, |
1882 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); | |
a72da29b MM |
1883 | if (rc == IO_OK) |
1884 | memcpy(serial_no, &buf[8], buflen); | |
1885 | kfree(buf); | |
1886 | return; | |
1887 | } | |
1888 | ||
617e1344 SC |
1889 | /* |
1890 | * cciss_add_disk sets up the block device queue for a logical drive | |
1891 | */ | |
1892 | static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, | |
6ae5ce8e MM |
1893 | int drv_index) |
1894 | { | |
1895 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); | |
e8074f79 SC |
1896 | if (!disk->queue) |
1897 | goto init_queue_failure; | |
6ae5ce8e MM |
1898 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); |
1899 | disk->major = h->major; | |
1900 | disk->first_minor = drv_index << NWD_SHIFT; | |
1901 | disk->fops = &cciss_fops; | |
9cef0d2f SC |
1902 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
1903 | goto cleanup_queue; | |
1904 | disk->private_data = h->drv[drv_index]; | |
1905 | disk->driverfs_dev = &h->drv[drv_index]->dev; | |
6ae5ce8e MM |
1906 | |
1907 | /* Set up queue information */ | |
1908 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); | |
1909 | ||
1910 | /* This is a hardware imposed limit. */ | |
8a78362c | 1911 | blk_queue_max_segments(disk->queue, h->maxsgentries); |
6ae5ce8e | 1912 | |
086fa5ff | 1913 | blk_queue_max_hw_sectors(disk->queue, h->cciss_max_sectors); |
6ae5ce8e MM |
1914 | |
1915 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); | |
1916 | ||
1917 | disk->queue->queuedata = h; | |
1918 | ||
e1defc4f | 1919 | blk_queue_logical_block_size(disk->queue, |
9cef0d2f | 1920 | h->drv[drv_index]->block_size); |
6ae5ce8e MM |
1921 | |
1922 | /* Make sure all queue data is written out before */ | |
9cef0d2f | 1923 | /* setting h->drv[drv_index]->queue, as setting this */ |
6ae5ce8e MM |
1924 | /* allows the interrupt handler to start the queue */ |
1925 | wmb(); | |
9cef0d2f | 1926 | h->drv[drv_index]->queue = disk->queue; |
6ae5ce8e | 1927 | add_disk(disk); |
617e1344 SC |
1928 | return 0; |
1929 | ||
1930 | cleanup_queue: | |
1931 | blk_cleanup_queue(disk->queue); | |
1932 | disk->queue = NULL; | |
e8074f79 | 1933 | init_queue_failure: |
617e1344 | 1934 | return -1; |
6ae5ce8e MM |
1935 | } |
1936 | ||
ddd47442 | 1937 | /* This function will check the usage_count of the drive to be updated/added. |
a72da29b MM |
1938 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
1939 | * the drive's capacity, geometry, or serial number has changed, | |
1940 | * then the drive information will be updated and the disk will be | |
1941 | * re-registered with the kernel. If these conditions don't hold, | |
1942 | * then it will be left alone for the next reboot. The exception to this | |
1943 | * is disk 0 which will always be left registered with the kernel since it | |
1944 | * is also the controller node. Any changes to disk 0 will show up on | |
1945 | * the next reboot. | |
7c832835 | 1946 | */ |
2d11d993 SC |
1947 | static void cciss_update_drive_info(int ctlr, int drv_index, int first_time, |
1948 | int via_ioctl) | |
7c832835 | 1949 | { |
ddd47442 MM |
1950 | ctlr_info_t *h = hba[ctlr]; |
1951 | struct gendisk *disk; | |
ddd47442 MM |
1952 | InquiryData_struct *inq_buff = NULL; |
1953 | unsigned int block_size; | |
00988a35 | 1954 | sector_t total_size; |
ddd47442 MM |
1955 | unsigned long flags = 0; |
1956 | int ret = 0; | |
a72da29b MM |
1957 | drive_info_struct *drvinfo; |
1958 | ||
1959 | /* Get information about the disk and modify the driver structure */ | |
1960 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
9cef0d2f | 1961 | drvinfo = kzalloc(sizeof(*drvinfo), GFP_KERNEL); |
a72da29b MM |
1962 | if (inq_buff == NULL || drvinfo == NULL) |
1963 | goto mem_msg; | |
1964 | ||
1965 | /* testing to see if 16-byte CDBs are already being used */ | |
1966 | if (h->cciss_read == CCISS_READ_16) { | |
7b838bde | 1967 | cciss_read_capacity_16(h->ctlr, drv_index, |
a72da29b MM |
1968 | &total_size, &block_size); |
1969 | ||
1970 | } else { | |
7b838bde | 1971 | cciss_read_capacity(ctlr, drv_index, &total_size, &block_size); |
a72da29b MM |
1972 | /* if read_capacity returns all F's this volume is >2TB */ |
1973 | /* in size so we switch to 16-byte CDB's for all */ | |
1974 | /* read/write ops */ | |
1975 | if (total_size == 0xFFFFFFFFULL) { | |
7b838bde | 1976 | cciss_read_capacity_16(ctlr, drv_index, |
a72da29b MM |
1977 | &total_size, &block_size); |
1978 | h->cciss_read = CCISS_READ_16; | |
1979 | h->cciss_write = CCISS_WRITE_16; | |
1980 | } else { | |
1981 | h->cciss_read = CCISS_READ_10; | |
1982 | h->cciss_write = CCISS_WRITE_10; | |
1983 | } | |
1984 | } | |
1985 | ||
7b838bde | 1986 | cciss_geometry_inquiry(ctlr, drv_index, total_size, block_size, |
a72da29b MM |
1987 | inq_buff, drvinfo); |
1988 | drvinfo->block_size = block_size; | |
1989 | drvinfo->nr_blocks = total_size + 1; | |
1990 | ||
7b838bde | 1991 | cciss_get_device_descr(ctlr, drv_index, drvinfo->vendor, |
7fe06326 | 1992 | drvinfo->model, drvinfo->rev); |
7b838bde | 1993 | cciss_get_serial_no(ctlr, drv_index, drvinfo->serial_no, |
a72da29b | 1994 | sizeof(drvinfo->serial_no)); |
9cef0d2f SC |
1995 | /* Save the lunid in case we deregister the disk, below. */ |
1996 | memcpy(drvinfo->LunID, h->drv[drv_index]->LunID, | |
1997 | sizeof(drvinfo->LunID)); | |
a72da29b MM |
1998 | |
1999 | /* Is it the same disk we already know, and nothing's changed? */ | |
9cef0d2f | 2000 | if (h->drv[drv_index]->raid_level != -1 && |
a72da29b | 2001 | ((memcmp(drvinfo->serial_no, |
9cef0d2f SC |
2002 | h->drv[drv_index]->serial_no, 16) == 0) && |
2003 | drvinfo->block_size == h->drv[drv_index]->block_size && | |
2004 | drvinfo->nr_blocks == h->drv[drv_index]->nr_blocks && | |
2005 | drvinfo->heads == h->drv[drv_index]->heads && | |
2006 | drvinfo->sectors == h->drv[drv_index]->sectors && | |
2007 | drvinfo->cylinders == h->drv[drv_index]->cylinders)) | |
a72da29b MM |
2008 | /* The disk is unchanged, nothing to update */ |
2009 | goto freeret; | |
a72da29b | 2010 | |
6ae5ce8e MM |
2011 | /* If we get here it's not the same disk, or something's changed, |
2012 | * so we need to * deregister it, and re-register it, if it's not | |
2013 | * in use. | |
2014 | * If the disk already exists then deregister it before proceeding | |
2015 | * (unless it's the first disk (for the controller node). | |
2016 | */ | |
9cef0d2f | 2017 | if (h->drv[drv_index]->raid_level != -1 && drv_index != 0) { |
a72da29b | 2018 | printk(KERN_WARNING "disk %d has changed.\n", drv_index); |
ddd47442 | 2019 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
9cef0d2f | 2020 | h->drv[drv_index]->busy_configuring = 1; |
ddd47442 | 2021 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
e14ac670 | 2022 | |
9cef0d2f | 2023 | /* deregister_disk sets h->drv[drv_index]->queue = NULL |
6ae5ce8e MM |
2024 | * which keeps the interrupt handler from starting |
2025 | * the queue. | |
2026 | */ | |
2d11d993 | 2027 | ret = deregister_disk(h, drv_index, 0, via_ioctl); |
ddd47442 MM |
2028 | } |
2029 | ||
2030 | /* If the disk is in use return */ | |
2031 | if (ret) | |
a72da29b MM |
2032 | goto freeret; |
2033 | ||
6ae5ce8e | 2034 | /* Save the new information from cciss_geometry_inquiry |
9cef0d2f SC |
2035 | * and serial number inquiry. If the disk was deregistered |
2036 | * above, then h->drv[drv_index] will be NULL. | |
6ae5ce8e | 2037 | */ |
9cef0d2f SC |
2038 | if (h->drv[drv_index] == NULL) { |
2039 | drvinfo->device_initialized = 0; | |
2040 | h->drv[drv_index] = drvinfo; | |
2041 | drvinfo = NULL; /* so it won't be freed below. */ | |
2042 | } else { | |
2043 | /* special case for cxd0 */ | |
2044 | h->drv[drv_index]->block_size = drvinfo->block_size; | |
2045 | h->drv[drv_index]->nr_blocks = drvinfo->nr_blocks; | |
2046 | h->drv[drv_index]->heads = drvinfo->heads; | |
2047 | h->drv[drv_index]->sectors = drvinfo->sectors; | |
2048 | h->drv[drv_index]->cylinders = drvinfo->cylinders; | |
2049 | h->drv[drv_index]->raid_level = drvinfo->raid_level; | |
2050 | memcpy(h->drv[drv_index]->serial_no, drvinfo->serial_no, 16); | |
2051 | memcpy(h->drv[drv_index]->vendor, drvinfo->vendor, | |
2052 | VENDOR_LEN + 1); | |
2053 | memcpy(h->drv[drv_index]->model, drvinfo->model, MODEL_LEN + 1); | |
2054 | memcpy(h->drv[drv_index]->rev, drvinfo->rev, REV_LEN + 1); | |
2055 | } | |
ddd47442 MM |
2056 | |
2057 | ++h->num_luns; | |
2058 | disk = h->gendisk[drv_index]; | |
9cef0d2f | 2059 | set_capacity(disk, h->drv[drv_index]->nr_blocks); |
ddd47442 | 2060 | |
6ae5ce8e MM |
2061 | /* If it's not disk 0 (drv_index != 0) |
2062 | * or if it was disk 0, but there was previously | |
2063 | * no actual corresponding configured logical drive | |
2064 | * (raid_leve == -1) then we want to update the | |
2065 | * logical drive's information. | |
2066 | */ | |
361e9b07 SC |
2067 | if (drv_index || first_time) { |
2068 | if (cciss_add_disk(h, disk, drv_index) != 0) { | |
2069 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 2070 | cciss_free_drive_info(h, drv_index); |
361e9b07 SC |
2071 | printk(KERN_WARNING "cciss:%d could not update " |
2072 | "disk %d\n", h->ctlr, drv_index); | |
2073 | --h->num_luns; | |
2074 | } | |
2075 | } | |
ddd47442 | 2076 | |
6ae5ce8e | 2077 | freeret: |
ddd47442 | 2078 | kfree(inq_buff); |
a72da29b | 2079 | kfree(drvinfo); |
ddd47442 | 2080 | return; |
6ae5ce8e | 2081 | mem_msg: |
ddd47442 MM |
2082 | printk(KERN_ERR "cciss: out of memory\n"); |
2083 | goto freeret; | |
2084 | } | |
2085 | ||
2086 | /* This function will find the first index of the controllers drive array | |
9cef0d2f SC |
2087 | * that has a null drv pointer and allocate the drive info struct and |
2088 | * will return that index This is where new drives will be added. | |
2089 | * If the index to be returned is greater than the highest_lun index for | |
2090 | * the controller then highest_lun is set * to this new index. | |
2091 | * If there are no available indexes or if tha allocation fails, then -1 | |
2092 | * is returned. * "controller_node" is used to know if this is a real | |
2093 | * logical drive, or just the controller node, which determines if this | |
2094 | * counts towards highest_lun. | |
7c832835 | 2095 | */ |
9cef0d2f | 2096 | static int cciss_alloc_drive_info(ctlr_info_t *h, int controller_node) |
ddd47442 MM |
2097 | { |
2098 | int i; | |
9cef0d2f | 2099 | drive_info_struct *drv; |
ddd47442 | 2100 | |
9cef0d2f | 2101 | /* Search for an empty slot for our drive info */ |
7c832835 | 2102 | for (i = 0; i < CISS_MAX_LUN; i++) { |
9cef0d2f SC |
2103 | |
2104 | /* if not cxd0 case, and it's occupied, skip it. */ | |
2105 | if (h->drv[i] && i != 0) | |
2106 | continue; | |
2107 | /* | |
2108 | * If it's cxd0 case, and drv is alloc'ed already, and a | |
2109 | * disk is configured there, skip it. | |
2110 | */ | |
2111 | if (i == 0 && h->drv[i] && h->drv[i]->raid_level != -1) | |
2112 | continue; | |
2113 | ||
2114 | /* | |
2115 | * We've found an empty slot. Update highest_lun | |
2116 | * provided this isn't just the fake cxd0 controller node. | |
2117 | */ | |
2118 | if (i > h->highest_lun && !controller_node) | |
2119 | h->highest_lun = i; | |
2120 | ||
2121 | /* If adding a real disk at cxd0, and it's already alloc'ed */ | |
2122 | if (i == 0 && h->drv[i] != NULL) | |
ddd47442 | 2123 | return i; |
9cef0d2f SC |
2124 | |
2125 | /* | |
2126 | * Found an empty slot, not already alloc'ed. Allocate it. | |
2127 | * Mark it with raid_level == -1, so we know it's new later on. | |
2128 | */ | |
2129 | drv = kzalloc(sizeof(*drv), GFP_KERNEL); | |
2130 | if (!drv) | |
2131 | return -1; | |
2132 | drv->raid_level = -1; /* so we know it's new */ | |
2133 | h->drv[i] = drv; | |
2134 | return i; | |
ddd47442 MM |
2135 | } |
2136 | return -1; | |
2137 | } | |
2138 | ||
9cef0d2f SC |
2139 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index) |
2140 | { | |
2141 | kfree(h->drv[drv_index]); | |
2142 | h->drv[drv_index] = NULL; | |
2143 | } | |
2144 | ||
361e9b07 SC |
2145 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index) |
2146 | { | |
2147 | put_disk(h->gendisk[drv_index]); | |
2148 | h->gendisk[drv_index] = NULL; | |
2149 | } | |
2150 | ||
6ae5ce8e MM |
2151 | /* cciss_add_gendisk finds a free hba[]->drv structure |
2152 | * and allocates a gendisk if needed, and sets the lunid | |
2153 | * in the drvinfo structure. It returns the index into | |
2154 | * the ->drv[] array, or -1 if none are free. | |
2155 | * is_controller_node indicates whether highest_lun should | |
2156 | * count this disk, or if it's only being added to provide | |
2157 | * a means to talk to the controller in case no logical | |
2158 | * drives have yet been configured. | |
2159 | */ | |
39ccf9a6 SC |
2160 | static int cciss_add_gendisk(ctlr_info_t *h, unsigned char lunid[], |
2161 | int controller_node) | |
6ae5ce8e MM |
2162 | { |
2163 | int drv_index; | |
2164 | ||
9cef0d2f | 2165 | drv_index = cciss_alloc_drive_info(h, controller_node); |
6ae5ce8e MM |
2166 | if (drv_index == -1) |
2167 | return -1; | |
8ce51966 | 2168 | |
6ae5ce8e MM |
2169 | /*Check if the gendisk needs to be allocated */ |
2170 | if (!h->gendisk[drv_index]) { | |
2171 | h->gendisk[drv_index] = | |
2172 | alloc_disk(1 << NWD_SHIFT); | |
2173 | if (!h->gendisk[drv_index]) { | |
2174 | printk(KERN_ERR "cciss%d: could not " | |
2175 | "allocate a new disk %d\n", | |
2176 | h->ctlr, drv_index); | |
9cef0d2f | 2177 | goto err_free_drive_info; |
6ae5ce8e MM |
2178 | } |
2179 | } | |
9cef0d2f SC |
2180 | memcpy(h->drv[drv_index]->LunID, lunid, |
2181 | sizeof(h->drv[drv_index]->LunID)); | |
2182 | if (cciss_create_ld_sysfs_entry(h, drv_index)) | |
7fe06326 | 2183 | goto err_free_disk; |
6ae5ce8e MM |
2184 | /* Don't need to mark this busy because nobody */ |
2185 | /* else knows about this disk yet to contend */ | |
2186 | /* for access to it. */ | |
9cef0d2f | 2187 | h->drv[drv_index]->busy_configuring = 0; |
6ae5ce8e MM |
2188 | wmb(); |
2189 | return drv_index; | |
7fe06326 AP |
2190 | |
2191 | err_free_disk: | |
361e9b07 | 2192 | cciss_free_gendisk(h, drv_index); |
9cef0d2f SC |
2193 | err_free_drive_info: |
2194 | cciss_free_drive_info(h, drv_index); | |
7fe06326 | 2195 | return -1; |
6ae5ce8e MM |
2196 | } |
2197 | ||
2198 | /* This is for the special case of a controller which | |
2199 | * has no logical drives. In this case, we still need | |
2200 | * to register a disk so the controller can be accessed | |
2201 | * by the Array Config Utility. | |
2202 | */ | |
2203 | static void cciss_add_controller_node(ctlr_info_t *h) | |
2204 | { | |
2205 | struct gendisk *disk; | |
2206 | int drv_index; | |
2207 | ||
2208 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ | |
2209 | return; | |
2210 | ||
39ccf9a6 | 2211 | drv_index = cciss_add_gendisk(h, CTLR_LUNID, 1); |
361e9b07 SC |
2212 | if (drv_index == -1) |
2213 | goto error; | |
9cef0d2f SC |
2214 | h->drv[drv_index]->block_size = 512; |
2215 | h->drv[drv_index]->nr_blocks = 0; | |
2216 | h->drv[drv_index]->heads = 0; | |
2217 | h->drv[drv_index]->sectors = 0; | |
2218 | h->drv[drv_index]->cylinders = 0; | |
2219 | h->drv[drv_index]->raid_level = -1; | |
2220 | memset(h->drv[drv_index]->serial_no, 0, 16); | |
6ae5ce8e | 2221 | disk = h->gendisk[drv_index]; |
361e9b07 SC |
2222 | if (cciss_add_disk(h, disk, drv_index) == 0) |
2223 | return; | |
2224 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 2225 | cciss_free_drive_info(h, drv_index); |
361e9b07 SC |
2226 | error: |
2227 | printk(KERN_WARNING "cciss%d: could not " | |
2228 | "add disk 0.\n", h->ctlr); | |
2229 | return; | |
6ae5ce8e MM |
2230 | } |
2231 | ||
ddd47442 | 2232 | /* This function will add and remove logical drives from the Logical |
d14c4ab5 | 2233 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
2234 | * so that mount points are preserved until the next reboot. This allows |
2235 | * for the removal of logical drives in the middle of the drive array | |
2236 | * without a re-ordering of those drives. | |
2237 | * INPUT | |
2238 | * h = The controller to perform the operations on | |
7c832835 | 2239 | */ |
2d11d993 SC |
2240 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, |
2241 | int via_ioctl) | |
1da177e4 | 2242 | { |
ddd47442 MM |
2243 | int ctlr = h->ctlr; |
2244 | int num_luns; | |
2245 | ReportLunData_struct *ld_buff = NULL; | |
ddd47442 MM |
2246 | int return_code; |
2247 | int listlength = 0; | |
2248 | int i; | |
2249 | int drv_found; | |
2250 | int drv_index = 0; | |
39ccf9a6 | 2251 | unsigned char lunid[8] = CTLR_LUNID; |
1da177e4 | 2252 | unsigned long flags; |
ddd47442 | 2253 | |
6ae5ce8e MM |
2254 | if (!capable(CAP_SYS_RAWIO)) |
2255 | return -EPERM; | |
2256 | ||
ddd47442 MM |
2257 | /* Set busy_configuring flag for this operation */ |
2258 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 2259 | if (h->busy_configuring) { |
ddd47442 MM |
2260 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2261 | return -EBUSY; | |
2262 | } | |
2263 | h->busy_configuring = 1; | |
a72da29b | 2264 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
ddd47442 | 2265 | |
a72da29b MM |
2266 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
2267 | if (ld_buff == NULL) | |
2268 | goto mem_msg; | |
2269 | ||
2270 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
b57695fe | 2271 | sizeof(ReportLunData_struct), |
2272 | 0, CTLR_LUNID, TYPE_CMD); | |
ddd47442 | 2273 | |
a72da29b MM |
2274 | if (return_code == IO_OK) |
2275 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); | |
2276 | else { /* reading number of logical volumes failed */ | |
2277 | printk(KERN_WARNING "cciss: report logical volume" | |
2278 | " command failed\n"); | |
2279 | listlength = 0; | |
2280 | goto freeret; | |
2281 | } | |
2282 | ||
2283 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
2284 | if (num_luns > CISS_MAX_LUN) { | |
2285 | num_luns = CISS_MAX_LUN; | |
2286 | printk(KERN_WARNING "cciss: more luns configured" | |
2287 | " on controller than can be handled by" | |
2288 | " this driver.\n"); | |
2289 | } | |
2290 | ||
6ae5ce8e MM |
2291 | if (num_luns == 0) |
2292 | cciss_add_controller_node(h); | |
2293 | ||
2294 | /* Compare controller drive array to driver's drive array | |
2295 | * to see if any drives are missing on the controller due | |
2296 | * to action of Array Config Utility (user deletes drive) | |
2297 | * and deregister logical drives which have disappeared. | |
2298 | */ | |
a72da29b MM |
2299 | for (i = 0; i <= h->highest_lun; i++) { |
2300 | int j; | |
2301 | drv_found = 0; | |
d8a0be6a SC |
2302 | |
2303 | /* skip holes in the array from already deleted drives */ | |
9cef0d2f | 2304 | if (h->drv[i] == NULL) |
d8a0be6a SC |
2305 | continue; |
2306 | ||
a72da29b | 2307 | for (j = 0; j < num_luns; j++) { |
39ccf9a6 | 2308 | memcpy(lunid, &ld_buff->LUN[j][0], sizeof(lunid)); |
9cef0d2f | 2309 | if (memcmp(h->drv[i]->LunID, lunid, |
39ccf9a6 | 2310 | sizeof(lunid)) == 0) { |
a72da29b MM |
2311 | drv_found = 1; |
2312 | break; | |
2313 | } | |
2314 | } | |
2315 | if (!drv_found) { | |
2316 | /* Deregister it from the OS, it's gone. */ | |
2317 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
9cef0d2f | 2318 | h->drv[i]->busy_configuring = 1; |
a72da29b | 2319 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2d11d993 | 2320 | return_code = deregister_disk(h, i, 1, via_ioctl); |
9cef0d2f SC |
2321 | if (h->drv[i] != NULL) |
2322 | h->drv[i]->busy_configuring = 0; | |
ddd47442 | 2323 | } |
a72da29b | 2324 | } |
ddd47442 | 2325 | |
a72da29b MM |
2326 | /* Compare controller drive array to driver's drive array. |
2327 | * Check for updates in the drive information and any new drives | |
2328 | * on the controller due to ACU adding logical drives, or changing | |
2329 | * a logical drive's size, etc. Reregister any new/changed drives | |
2330 | */ | |
2331 | for (i = 0; i < num_luns; i++) { | |
2332 | int j; | |
ddd47442 | 2333 | |
a72da29b | 2334 | drv_found = 0; |
ddd47442 | 2335 | |
39ccf9a6 | 2336 | memcpy(lunid, &ld_buff->LUN[i][0], sizeof(lunid)); |
a72da29b MM |
2337 | /* Find if the LUN is already in the drive array |
2338 | * of the driver. If so then update its info | |
2339 | * if not in use. If it does not exist then find | |
2340 | * the first free index and add it. | |
2341 | */ | |
2342 | for (j = 0; j <= h->highest_lun; j++) { | |
9cef0d2f SC |
2343 | if (h->drv[j] != NULL && |
2344 | memcmp(h->drv[j]->LunID, lunid, | |
2345 | sizeof(h->drv[j]->LunID)) == 0) { | |
a72da29b MM |
2346 | drv_index = j; |
2347 | drv_found = 1; | |
2348 | break; | |
ddd47442 | 2349 | } |
a72da29b | 2350 | } |
ddd47442 | 2351 | |
a72da29b MM |
2352 | /* check if the drive was found already in the array */ |
2353 | if (!drv_found) { | |
eece695f | 2354 | drv_index = cciss_add_gendisk(h, lunid, 0); |
a72da29b MM |
2355 | if (drv_index == -1) |
2356 | goto freeret; | |
a72da29b | 2357 | } |
2d11d993 SC |
2358 | cciss_update_drive_info(ctlr, drv_index, first_time, |
2359 | via_ioctl); | |
a72da29b | 2360 | } /* end for */ |
ddd47442 | 2361 | |
6ae5ce8e | 2362 | freeret: |
ddd47442 MM |
2363 | kfree(ld_buff); |
2364 | h->busy_configuring = 0; | |
2365 | /* We return -1 here to tell the ACU that we have registered/updated | |
2366 | * all of the drives that we can and to keep it from calling us | |
2367 | * additional times. | |
7c832835 | 2368 | */ |
ddd47442 | 2369 | return -1; |
6ae5ce8e | 2370 | mem_msg: |
ddd47442 | 2371 | printk(KERN_ERR "cciss: out of memory\n"); |
a72da29b | 2372 | h->busy_configuring = 0; |
ddd47442 MM |
2373 | goto freeret; |
2374 | } | |
2375 | ||
9ddb27b4 SC |
2376 | static void cciss_clear_drive_info(drive_info_struct *drive_info) |
2377 | { | |
2378 | /* zero out the disk size info */ | |
2379 | drive_info->nr_blocks = 0; | |
2380 | drive_info->block_size = 0; | |
2381 | drive_info->heads = 0; | |
2382 | drive_info->sectors = 0; | |
2383 | drive_info->cylinders = 0; | |
2384 | drive_info->raid_level = -1; | |
2385 | memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no)); | |
2386 | memset(drive_info->model, 0, sizeof(drive_info->model)); | |
2387 | memset(drive_info->rev, 0, sizeof(drive_info->rev)); | |
2388 | memset(drive_info->vendor, 0, sizeof(drive_info->vendor)); | |
2389 | /* | |
2390 | * don't clear the LUNID though, we need to remember which | |
2391 | * one this one is. | |
2392 | */ | |
2393 | } | |
2394 | ||
ddd47442 MM |
2395 | /* This function will deregister the disk and it's queue from the |
2396 | * kernel. It must be called with the controller lock held and the | |
2397 | * drv structures busy_configuring flag set. It's parameters are: | |
2398 | * | |
2399 | * disk = This is the disk to be deregistered | |
2400 | * drv = This is the drive_info_struct associated with the disk to be | |
2401 | * deregistered. It contains information about the disk used | |
2402 | * by the driver. | |
2403 | * clear_all = This flag determines whether or not the disk information | |
2404 | * is going to be completely cleared out and the highest_lun | |
2405 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 2406 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
2407 | * the highest_lun should be left unchanged and the LunID |
2408 | * should not be cleared. | |
2d11d993 SC |
2409 | * via_ioctl |
2410 | * This indicates whether we've reached this path via ioctl. | |
2411 | * This affects the maximum usage count allowed for c0d0 to be messed with. | |
2412 | * If this path is reached via ioctl(), then the max_usage_count will | |
2413 | * be 1, as the process calling ioctl() has got to have the device open. | |
2414 | * If we get here via sysfs, then the max usage count will be zero. | |
ddd47442 | 2415 | */ |
a0ea8622 | 2416 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
2d11d993 | 2417 | int clear_all, int via_ioctl) |
ddd47442 | 2418 | { |
799202cb | 2419 | int i; |
a0ea8622 SC |
2420 | struct gendisk *disk; |
2421 | drive_info_struct *drv; | |
9cef0d2f | 2422 | int recalculate_highest_lun; |
1da177e4 LT |
2423 | |
2424 | if (!capable(CAP_SYS_RAWIO)) | |
2425 | return -EPERM; | |
2426 | ||
9cef0d2f | 2427 | drv = h->drv[drv_index]; |
a0ea8622 SC |
2428 | disk = h->gendisk[drv_index]; |
2429 | ||
1da177e4 | 2430 | /* make sure logical volume is NOT is use */ |
7c832835 | 2431 | if (clear_all || (h->gendisk[0] == disk)) { |
2d11d993 | 2432 | if (drv->usage_count > via_ioctl) |
7c832835 BH |
2433 | return -EBUSY; |
2434 | } else if (drv->usage_count > 0) | |
2435 | return -EBUSY; | |
1da177e4 | 2436 | |
9cef0d2f SC |
2437 | recalculate_highest_lun = (drv == h->drv[h->highest_lun]); |
2438 | ||
ddd47442 MM |
2439 | /* invalidate the devices and deregister the disk. If it is disk |
2440 | * zero do not deregister it but just zero out it's values. This | |
2441 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
2442 | */ |
2443 | if (h->gendisk[0] != disk) { | |
5a9df732 | 2444 | struct request_queue *q = disk->queue; |
097d0264 | 2445 | if (disk->flags & GENHD_FL_UP) { |
8ce51966 | 2446 | cciss_destroy_ld_sysfs_entry(h, drv_index, 0); |
5a9df732 | 2447 | del_gendisk(disk); |
5a9df732 | 2448 | } |
9cef0d2f | 2449 | if (q) |
5a9df732 | 2450 | blk_cleanup_queue(q); |
5a9df732 AB |
2451 | /* If clear_all is set then we are deleting the logical |
2452 | * drive, not just refreshing its info. For drives | |
2453 | * other than disk 0 we will call put_disk. We do not | |
2454 | * do this for disk 0 as we need it to be able to | |
2455 | * configure the controller. | |
a72da29b | 2456 | */ |
5a9df732 AB |
2457 | if (clear_all){ |
2458 | /* This isn't pretty, but we need to find the | |
2459 | * disk in our array and NULL our the pointer. | |
2460 | * This is so that we will call alloc_disk if | |
2461 | * this index is used again later. | |
a72da29b | 2462 | */ |
5a9df732 | 2463 | for (i=0; i < CISS_MAX_LUN; i++){ |
a72da29b | 2464 | if (h->gendisk[i] == disk) { |
5a9df732 AB |
2465 | h->gendisk[i] = NULL; |
2466 | break; | |
799202cb | 2467 | } |
799202cb | 2468 | } |
5a9df732 | 2469 | put_disk(disk); |
ddd47442 | 2470 | } |
799202cb MM |
2471 | } else { |
2472 | set_capacity(disk, 0); | |
9cef0d2f | 2473 | cciss_clear_drive_info(drv); |
ddd47442 MM |
2474 | } |
2475 | ||
2476 | --h->num_luns; | |
ddd47442 | 2477 | |
9cef0d2f SC |
2478 | /* if it was the last disk, find the new hightest lun */ |
2479 | if (clear_all && recalculate_highest_lun) { | |
c2d45b4d | 2480 | int newhighest = -1; |
9cef0d2f SC |
2481 | for (i = 0; i <= h->highest_lun; i++) { |
2482 | /* if the disk has size > 0, it is available */ | |
2483 | if (h->drv[i] && h->drv[i]->heads) | |
2484 | newhighest = i; | |
1da177e4 | 2485 | } |
9cef0d2f | 2486 | h->highest_lun = newhighest; |
ddd47442 | 2487 | } |
e2019b58 | 2488 | return 0; |
1da177e4 | 2489 | } |
ddd47442 | 2490 | |
b57695fe | 2491 | static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, |
2492 | size_t size, __u8 page_code, unsigned char *scsi3addr, | |
2493 | int cmd_type) | |
1da177e4 | 2494 | { |
7c832835 | 2495 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
2496 | u64bit buff_dma_handle; |
2497 | int status = IO_OK; | |
2498 | ||
2499 | c->cmd_type = CMD_IOCTL_PEND; | |
2500 | c->Header.ReplyQueue = 0; | |
7c832835 | 2501 | if (buff != NULL) { |
1da177e4 | 2502 | c->Header.SGList = 1; |
7c832835 | 2503 | c->Header.SGTotal = 1; |
1da177e4 LT |
2504 | } else { |
2505 | c->Header.SGList = 0; | |
7c832835 | 2506 | c->Header.SGTotal = 0; |
1da177e4 LT |
2507 | } |
2508 | c->Header.Tag.lower = c->busaddr; | |
b57695fe | 2509 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
1da177e4 LT |
2510 | |
2511 | c->Request.Type.Type = cmd_type; | |
2512 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
2513 | switch (cmd) { |
2514 | case CISS_INQUIRY: | |
1da177e4 | 2515 | /* are we trying to read a vital product page */ |
7c832835 | 2516 | if (page_code != 0) { |
1da177e4 LT |
2517 | c->Request.CDB[1] = 0x01; |
2518 | c->Request.CDB[2] = page_code; | |
2519 | } | |
2520 | c->Request.CDBLen = 6; | |
7c832835 | 2521 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
2522 | c->Request.Type.Direction = XFER_READ; |
2523 | c->Request.Timeout = 0; | |
7c832835 BH |
2524 | c->Request.CDB[0] = CISS_INQUIRY; |
2525 | c->Request.CDB[4] = size & 0xFF; | |
2526 | break; | |
1da177e4 LT |
2527 | case CISS_REPORT_LOG: |
2528 | case CISS_REPORT_PHYS: | |
7c832835 | 2529 | /* Talking to controller so It's a physical command |
1da177e4 | 2530 | mode = 00 target = 0. Nothing to write. |
7c832835 | 2531 | */ |
1da177e4 LT |
2532 | c->Request.CDBLen = 12; |
2533 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2534 | c->Request.Type.Direction = XFER_READ; | |
2535 | c->Request.Timeout = 0; | |
2536 | c->Request.CDB[0] = cmd; | |
b028461d | 2537 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ |
1da177e4 LT |
2538 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
2539 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
2540 | c->Request.CDB[9] = size & 0xFF; | |
2541 | break; | |
2542 | ||
2543 | case CCISS_READ_CAPACITY: | |
1da177e4 LT |
2544 | c->Request.CDBLen = 10; |
2545 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2546 | c->Request.Type.Direction = XFER_READ; | |
2547 | c->Request.Timeout = 0; | |
2548 | c->Request.CDB[0] = cmd; | |
7c832835 | 2549 | break; |
00988a35 | 2550 | case CCISS_READ_CAPACITY_16: |
00988a35 MMOD |
2551 | c->Request.CDBLen = 16; |
2552 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2553 | c->Request.Type.Direction = XFER_READ; | |
2554 | c->Request.Timeout = 0; | |
2555 | c->Request.CDB[0] = cmd; | |
2556 | c->Request.CDB[1] = 0x10; | |
2557 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
2558 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
2559 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
2560 | c->Request.CDB[13] = size & 0xFF; | |
2561 | c->Request.Timeout = 0; | |
2562 | c->Request.CDB[0] = cmd; | |
2563 | break; | |
1da177e4 LT |
2564 | case CCISS_CACHE_FLUSH: |
2565 | c->Request.CDBLen = 12; | |
2566 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2567 | c->Request.Type.Direction = XFER_WRITE; | |
2568 | c->Request.Timeout = 0; | |
2569 | c->Request.CDB[0] = BMIC_WRITE; | |
2570 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 2571 | break; |
88f627ae | 2572 | case TEST_UNIT_READY: |
88f627ae SC |
2573 | c->Request.CDBLen = 6; |
2574 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2575 | c->Request.Type.Direction = XFER_NONE; | |
2576 | c->Request.Timeout = 0; | |
2577 | break; | |
1da177e4 LT |
2578 | default: |
2579 | printk(KERN_WARNING | |
7c832835 | 2580 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 2581 | return IO_ERROR; |
1da177e4 LT |
2582 | } |
2583 | } else if (cmd_type == TYPE_MSG) { | |
2584 | switch (cmd) { | |
7c832835 | 2585 | case 0: /* ABORT message */ |
3da8b713 | 2586 | c->Request.CDBLen = 12; |
2587 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2588 | c->Request.Type.Direction = XFER_WRITE; | |
2589 | c->Request.Timeout = 0; | |
7c832835 BH |
2590 | c->Request.CDB[0] = cmd; /* abort */ |
2591 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 2592 | /* buff contains the tag of the command to abort */ |
2593 | memcpy(&c->Request.CDB[4], buff, 8); | |
2594 | break; | |
7c832835 | 2595 | case 1: /* RESET message */ |
88f627ae | 2596 | c->Request.CDBLen = 16; |
3da8b713 | 2597 | c->Request.Type.Attribute = ATTR_SIMPLE; |
88f627ae | 2598 | c->Request.Type.Direction = XFER_NONE; |
3da8b713 | 2599 | c->Request.Timeout = 0; |
2600 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 | 2601 | c->Request.CDB[0] = cmd; /* reset */ |
88f627ae | 2602 | c->Request.CDB[1] = 0x03; /* reset a target */ |
00988a35 | 2603 | break; |
1da177e4 LT |
2604 | case 3: /* No-Op message */ |
2605 | c->Request.CDBLen = 1; | |
2606 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2607 | c->Request.Type.Direction = XFER_WRITE; | |
2608 | c->Request.Timeout = 0; | |
2609 | c->Request.CDB[0] = cmd; | |
2610 | break; | |
2611 | default: | |
2612 | printk(KERN_WARNING | |
7c832835 | 2613 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
2614 | return IO_ERROR; |
2615 | } | |
2616 | } else { | |
2617 | printk(KERN_WARNING | |
7c832835 | 2618 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
2619 | return IO_ERROR; |
2620 | } | |
2621 | /* Fill in the scatter gather information */ | |
2622 | if (size > 0) { | |
2623 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
2624 | buff, size, |
2625 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
2626 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
2627 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
2628 | c->SG[0].Len = size; | |
7c832835 | 2629 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
2630 | } |
2631 | return status; | |
2632 | } | |
7c832835 | 2633 | |
3c2ab402 | 2634 | static int check_target_status(ctlr_info_t *h, CommandList_struct *c) |
2635 | { | |
2636 | switch (c->err_info->ScsiStatus) { | |
2637 | case SAM_STAT_GOOD: | |
2638 | return IO_OK; | |
2639 | case SAM_STAT_CHECK_CONDITION: | |
2640 | switch (0xf & c->err_info->SenseInfo[2]) { | |
2641 | case 0: return IO_OK; /* no sense */ | |
2642 | case 1: return IO_OK; /* recovered error */ | |
2643 | default: | |
c08fac65 SC |
2644 | if (check_for_unit_attention(h, c)) |
2645 | return IO_NEEDS_RETRY; | |
3c2ab402 | 2646 | printk(KERN_WARNING "cciss%d: cmd 0x%02x " |
2647 | "check condition, sense key = 0x%02x\n", | |
2648 | h->ctlr, c->Request.CDB[0], | |
2649 | c->err_info->SenseInfo[2]); | |
2650 | } | |
2651 | break; | |
2652 | default: | |
2653 | printk(KERN_WARNING "cciss%d: cmd 0x%02x" | |
2654 | "scsi status = 0x%02x\n", h->ctlr, | |
2655 | c->Request.CDB[0], c->err_info->ScsiStatus); | |
2656 | break; | |
2657 | } | |
2658 | return IO_ERROR; | |
2659 | } | |
2660 | ||
789a424a | 2661 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 | 2662 | { |
5390cfc3 | 2663 | int return_status = IO_OK; |
7c832835 | 2664 | |
789a424a | 2665 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
2666 | return IO_OK; | |
5390cfc3 | 2667 | |
2668 | switch (c->err_info->CommandStatus) { | |
2669 | case CMD_TARGET_STATUS: | |
3c2ab402 | 2670 | return_status = check_target_status(h, c); |
5390cfc3 | 2671 | break; |
2672 | case CMD_DATA_UNDERRUN: | |
2673 | case CMD_DATA_OVERRUN: | |
2674 | /* expected for inquiry and report lun commands */ | |
2675 | break; | |
2676 | case CMD_INVALID: | |
789a424a | 2677 | printk(KERN_WARNING "cciss: cmd 0x%02x is " |
5390cfc3 | 2678 | "reported invalid\n", c->Request.CDB[0]); |
2679 | return_status = IO_ERROR; | |
2680 | break; | |
2681 | case CMD_PROTOCOL_ERR: | |
2682 | printk(KERN_WARNING "cciss: cmd 0x%02x has " | |
2683 | "protocol error \n", c->Request.CDB[0]); | |
2684 | return_status = IO_ERROR; | |
2685 | break; | |
2686 | case CMD_HARDWARE_ERR: | |
2687 | printk(KERN_WARNING "cciss: cmd 0x%02x had " | |
2688 | " hardware error\n", c->Request.CDB[0]); | |
2689 | return_status = IO_ERROR; | |
2690 | break; | |
2691 | case CMD_CONNECTION_LOST: | |
2692 | printk(KERN_WARNING "cciss: cmd 0x%02x had " | |
2693 | "connection lost\n", c->Request.CDB[0]); | |
2694 | return_status = IO_ERROR; | |
2695 | break; | |
2696 | case CMD_ABORTED: | |
2697 | printk(KERN_WARNING "cciss: cmd 0x%02x was " | |
2698 | "aborted\n", c->Request.CDB[0]); | |
2699 | return_status = IO_ERROR; | |
2700 | break; | |
2701 | case CMD_ABORT_FAILED: | |
2702 | printk(KERN_WARNING "cciss: cmd 0x%02x reports " | |
2703 | "abort failed\n", c->Request.CDB[0]); | |
2704 | return_status = IO_ERROR; | |
2705 | break; | |
2706 | case CMD_UNSOLICITED_ABORT: | |
2707 | printk(KERN_WARNING | |
2708 | "cciss%d: unsolicited abort 0x%02x\n", h->ctlr, | |
2709 | c->Request.CDB[0]); | |
789a424a | 2710 | return_status = IO_NEEDS_RETRY; |
5390cfc3 | 2711 | break; |
2712 | default: | |
2713 | printk(KERN_WARNING "cciss: cmd 0x%02x returned " | |
2714 | "unknown status %x\n", c->Request.CDB[0], | |
2715 | c->err_info->CommandStatus); | |
2716 | return_status = IO_ERROR; | |
7c832835 | 2717 | } |
789a424a | 2718 | return return_status; |
2719 | } | |
2720 | ||
2721 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, | |
2722 | int attempt_retry) | |
2723 | { | |
2724 | DECLARE_COMPLETION_ONSTACK(wait); | |
2725 | u64bit buff_dma_handle; | |
789a424a | 2726 | int return_status = IO_OK; |
2727 | ||
2728 | resend_cmd2: | |
2729 | c->waiting = &wait; | |
664a717d | 2730 | enqueue_cmd_and_start_io(h, c); |
789a424a | 2731 | |
2732 | wait_for_completion(&wait); | |
2733 | ||
2734 | if (c->err_info->CommandStatus == 0 || !attempt_retry) | |
2735 | goto command_done; | |
2736 | ||
2737 | return_status = process_sendcmd_error(h, c); | |
2738 | ||
2739 | if (return_status == IO_NEEDS_RETRY && | |
2740 | c->retry_count < MAX_CMD_RETRIES) { | |
2741 | printk(KERN_WARNING "cciss%d: retrying 0x%02x\n", h->ctlr, | |
2742 | c->Request.CDB[0]); | |
2743 | c->retry_count++; | |
2744 | /* erase the old error information */ | |
2745 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2746 | return_status = IO_OK; | |
2747 | INIT_COMPLETION(wait); | |
2748 | goto resend_cmd2; | |
2749 | } | |
5390cfc3 | 2750 | |
2751 | command_done: | |
1da177e4 | 2752 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
2753 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2754 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
2755 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
2756 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
5390cfc3 | 2757 | return return_status; |
2758 | } | |
2759 | ||
b57695fe | 2760 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
2761 | __u8 page_code, unsigned char scsi3addr[], | |
2762 | int cmd_type) | |
5390cfc3 | 2763 | { |
2764 | ctlr_info_t *h = hba[ctlr]; | |
2765 | CommandList_struct *c; | |
2766 | int return_status; | |
2767 | ||
2768 | c = cmd_alloc(h, 0); | |
2769 | if (!c) | |
2770 | return -ENOMEM; | |
b57695fe | 2771 | return_status = fill_cmd(c, cmd, ctlr, buff, size, page_code, |
2772 | scsi3addr, cmd_type); | |
5390cfc3 | 2773 | if (return_status == IO_OK) |
789a424a | 2774 | return_status = sendcmd_withirq_core(h, c, 1); |
2775 | ||
1da177e4 | 2776 | cmd_free(h, c, 0); |
7c832835 | 2777 | return return_status; |
1da177e4 | 2778 | } |
7c832835 | 2779 | |
1da177e4 | 2780 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
7b838bde | 2781 | sector_t total_size, |
7c832835 BH |
2782 | unsigned int block_size, |
2783 | InquiryData_struct *inq_buff, | |
2784 | drive_info_struct *drv) | |
1da177e4 LT |
2785 | { |
2786 | int return_code; | |
00988a35 | 2787 | unsigned long t; |
b57695fe | 2788 | unsigned char scsi3addr[8]; |
00988a35 | 2789 | |
1da177e4 | 2790 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
b57695fe | 2791 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
2792 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buff, |
2793 | sizeof(*inq_buff), 0xC1, scsi3addr, TYPE_CMD); | |
1da177e4 | 2794 | if (return_code == IO_OK) { |
7c832835 | 2795 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 2796 | printk(KERN_WARNING |
7c832835 BH |
2797 | "cciss: reading geometry failed, volume " |
2798 | "does not support reading geometry\n"); | |
1da177e4 | 2799 | drv->heads = 255; |
b028461d | 2800 | drv->sectors = 32; /* Sectors per track */ |
7f42d3b8 | 2801 | drv->cylinders = total_size + 1; |
89f97ad1 | 2802 | drv->raid_level = RAID_UNKNOWN; |
1da177e4 | 2803 | } else { |
1da177e4 LT |
2804 | drv->heads = inq_buff->data_byte[6]; |
2805 | drv->sectors = inq_buff->data_byte[7]; | |
2806 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
2807 | drv->cylinders += inq_buff->data_byte[5]; | |
2808 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
2809 | } |
2810 | drv->block_size = block_size; | |
97c06978 | 2811 | drv->nr_blocks = total_size + 1; |
3f7705ea MW |
2812 | t = drv->heads * drv->sectors; |
2813 | if (t > 1) { | |
97c06978 MMOD |
2814 | sector_t real_size = total_size + 1; |
2815 | unsigned long rem = sector_div(real_size, t); | |
3f7705ea | 2816 | if (rem) |
97c06978 MMOD |
2817 | real_size++; |
2818 | drv->cylinders = real_size; | |
1da177e4 | 2819 | } |
7c832835 | 2820 | } else { /* Get geometry failed */ |
1da177e4 LT |
2821 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
2822 | } | |
1da177e4 | 2823 | } |
7c832835 | 2824 | |
1da177e4 | 2825 | static void |
7b838bde | 2826 | cciss_read_capacity(int ctlr, int logvol, sector_t *total_size, |
7c832835 | 2827 | unsigned int *block_size) |
1da177e4 | 2828 | { |
00988a35 | 2829 | ReadCapdata_struct *buf; |
1da177e4 | 2830 | int return_code; |
b57695fe | 2831 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2832 | |
2833 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); | |
2834 | if (!buf) { | |
00988a35 MMOD |
2835 | printk(KERN_WARNING "cciss: out of memory\n"); |
2836 | return; | |
2837 | } | |
1aebe187 | 2838 | |
b57695fe | 2839 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
2840 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, ctlr, buf, |
2841 | sizeof(ReadCapdata_struct), 0, scsi3addr, TYPE_CMD); | |
1da177e4 | 2842 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2843 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
2844 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
7c832835 | 2845 | } else { /* read capacity command failed */ |
1da177e4 LT |
2846 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
2847 | *total_size = 0; | |
2848 | *block_size = BLOCK_SIZE; | |
2849 | } | |
00988a35 | 2850 | kfree(buf); |
00988a35 MMOD |
2851 | } |
2852 | ||
7b838bde SC |
2853 | static void cciss_read_capacity_16(int ctlr, int logvol, |
2854 | sector_t *total_size, unsigned int *block_size) | |
00988a35 MMOD |
2855 | { |
2856 | ReadCapdata_struct_16 *buf; | |
2857 | int return_code; | |
b57695fe | 2858 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2859 | |
2860 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2861 | if (!buf) { | |
00988a35 MMOD |
2862 | printk(KERN_WARNING "cciss: out of memory\n"); |
2863 | return; | |
2864 | } | |
1aebe187 | 2865 | |
b57695fe | 2866 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
2867 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, |
2868 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2869 | 0, scsi3addr, TYPE_CMD); | |
00988a35 | 2870 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2871 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
2872 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
00988a35 MMOD |
2873 | } else { /* read capacity command failed */ |
2874 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
2875 | *total_size = 0; | |
2876 | *block_size = BLOCK_SIZE; | |
2877 | } | |
7b92aadf | 2878 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2879 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2880 | kfree(buf); |
1da177e4 LT |
2881 | } |
2882 | ||
1da177e4 LT |
2883 | static int cciss_revalidate(struct gendisk *disk) |
2884 | { | |
2885 | ctlr_info_t *h = get_host(disk); | |
2886 | drive_info_struct *drv = get_drv(disk); | |
2887 | int logvol; | |
7c832835 | 2888 | int FOUND = 0; |
1da177e4 | 2889 | unsigned int block_size; |
00988a35 | 2890 | sector_t total_size; |
1da177e4 LT |
2891 | InquiryData_struct *inq_buff = NULL; |
2892 | ||
7c832835 | 2893 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
9cef0d2f | 2894 | if (memcmp(h->drv[logvol]->LunID, drv->LunID, |
39ccf9a6 | 2895 | sizeof(drv->LunID)) == 0) { |
7c832835 | 2896 | FOUND = 1; |
1da177e4 LT |
2897 | break; |
2898 | } | |
2899 | } | |
2900 | ||
7c832835 BH |
2901 | if (!FOUND) |
2902 | return 1; | |
1da177e4 | 2903 | |
7c832835 BH |
2904 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2905 | if (inq_buff == NULL) { | |
2906 | printk(KERN_WARNING "cciss: out of memory\n"); | |
7c832835 BH |
2907 | return 1; |
2908 | } | |
00988a35 | 2909 | if (h->cciss_read == CCISS_READ_10) { |
7b838bde | 2910 | cciss_read_capacity(h->ctlr, logvol, |
00988a35 MMOD |
2911 | &total_size, &block_size); |
2912 | } else { | |
7b838bde | 2913 | cciss_read_capacity_16(h->ctlr, logvol, |
00988a35 MMOD |
2914 | &total_size, &block_size); |
2915 | } | |
7b838bde | 2916 | cciss_geometry_inquiry(h->ctlr, logvol, total_size, block_size, |
7c832835 | 2917 | inq_buff, drv); |
1da177e4 | 2918 | |
e1defc4f | 2919 | blk_queue_logical_block_size(drv->queue, drv->block_size); |
1da177e4 LT |
2920 | set_capacity(disk, drv->nr_blocks); |
2921 | ||
1da177e4 LT |
2922 | kfree(inq_buff); |
2923 | return 0; | |
2924 | } | |
2925 | ||
1da177e4 LT |
2926 | /* |
2927 | * Map (physical) PCI mem into (virtual) kernel space | |
2928 | */ | |
2929 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2930 | { | |
7c832835 BH |
2931 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2932 | ulong page_offs = ((ulong) base) - page_base; | |
2933 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2934 | |
7c832835 | 2935 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2936 | } |
2937 | ||
7c832835 BH |
2938 | /* |
2939 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2940 | * the Q to wait for completion. | |
2941 | */ | |
2942 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
2943 | { |
2944 | CommandList_struct *c; | |
7c832835 | 2945 | |
8a3173de JA |
2946 | while (!hlist_empty(&h->reqQ)) { |
2947 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); | |
1da177e4 LT |
2948 | /* can't do anything if fifo is full */ |
2949 | if ((h->access.fifo_full(h))) { | |
2950 | printk(KERN_WARNING "cciss: fifo full\n"); | |
2951 | break; | |
2952 | } | |
2953 | ||
7c832835 | 2954 | /* Get the first entry from the Request Q */ |
8a3173de | 2955 | removeQ(c); |
1da177e4 | 2956 | h->Qdepth--; |
7c832835 BH |
2957 | |
2958 | /* Tell the controller execute command */ | |
1da177e4 | 2959 | h->access.submit_command(h, c); |
7c832835 BH |
2960 | |
2961 | /* Put job onto the completed Q */ | |
8a3173de | 2962 | addQ(&h->cmpQ, c); |
1da177e4 LT |
2963 | } |
2964 | } | |
7c832835 | 2965 | |
1da177e4 LT |
2966 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
2967 | /* Zeros out the error record and then resends the command back */ | |
2968 | /* to the controller */ | |
7c832835 | 2969 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
2970 | { |
2971 | /* erase the old error information */ | |
2972 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2973 | ||
2974 | /* add it to software queue and then send it to the controller */ | |
8a3173de | 2975 | addQ(&h->reqQ, c); |
1da177e4 | 2976 | h->Qdepth++; |
7c832835 | 2977 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
2978 | h->maxQsinceinit = h->Qdepth; |
2979 | ||
2980 | start_io(h); | |
2981 | } | |
a9925a06 | 2982 | |
1a614f50 SC |
2983 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
2984 | unsigned int msg_byte, unsigned int host_byte, | |
2985 | unsigned int driver_byte) | |
2986 | { | |
2987 | /* inverse of macros in scsi.h */ | |
2988 | return (scsi_status_byte & 0xff) | | |
2989 | ((msg_byte & 0xff) << 8) | | |
2990 | ((host_byte & 0xff) << 16) | | |
2991 | ((driver_byte & 0xff) << 24); | |
2992 | } | |
2993 | ||
0a9279cc MM |
2994 | static inline int evaluate_target_status(ctlr_info_t *h, |
2995 | CommandList_struct *cmd, int *retry_cmd) | |
03bbfee5 MMOD |
2996 | { |
2997 | unsigned char sense_key; | |
1a614f50 SC |
2998 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
2999 | int error_value; | |
3000 | ||
0a9279cc | 3001 | *retry_cmd = 0; |
1a614f50 SC |
3002 | /* If we get in here, it means we got "target status", that is, scsi status */ |
3003 | status_byte = cmd->err_info->ScsiStatus; | |
3004 | driver_byte = DRIVER_OK; | |
3005 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ | |
3006 | ||
3007 | if (blk_pc_request(cmd->rq)) | |
3008 | host_byte = DID_PASSTHROUGH; | |
3009 | else | |
3010 | host_byte = DID_OK; | |
3011 | ||
3012 | error_value = make_status_bytes(status_byte, msg_byte, | |
3013 | host_byte, driver_byte); | |
03bbfee5 | 3014 | |
1a614f50 | 3015 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
03bbfee5 MMOD |
3016 | if (!blk_pc_request(cmd->rq)) |
3017 | printk(KERN_WARNING "cciss: cmd %p " | |
3018 | "has SCSI Status 0x%x\n", | |
3019 | cmd, cmd->err_info->ScsiStatus); | |
1a614f50 | 3020 | return error_value; |
03bbfee5 MMOD |
3021 | } |
3022 | ||
3023 | /* check the sense key */ | |
3024 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
3025 | /* no status or recovered error */ | |
1a614f50 SC |
3026 | if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq)) |
3027 | error_value = 0; | |
03bbfee5 | 3028 | |
0a9279cc MM |
3029 | if (check_for_unit_attention(h, cmd)) { |
3030 | *retry_cmd = !blk_pc_request(cmd->rq); | |
3031 | return 0; | |
3032 | } | |
3033 | ||
03bbfee5 | 3034 | if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */ |
1a614f50 | 3035 | if (error_value != 0) |
03bbfee5 MMOD |
3036 | printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" |
3037 | " sense key = 0x%x\n", cmd, sense_key); | |
1a614f50 | 3038 | return error_value; |
03bbfee5 MMOD |
3039 | } |
3040 | ||
3041 | /* SG_IO or similar, copy sense data back */ | |
3042 | if (cmd->rq->sense) { | |
3043 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) | |
3044 | cmd->rq->sense_len = cmd->err_info->SenseLen; | |
3045 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, | |
3046 | cmd->rq->sense_len); | |
3047 | } else | |
3048 | cmd->rq->sense_len = 0; | |
3049 | ||
1a614f50 | 3050 | return error_value; |
03bbfee5 MMOD |
3051 | } |
3052 | ||
7c832835 | 3053 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
3054 | * buffers for the completed job. Note that this function does not need |
3055 | * to hold the hba/queue lock. | |
7c832835 BH |
3056 | */ |
3057 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
3058 | int timeout) | |
1da177e4 | 3059 | { |
1da177e4 | 3060 | int retry_cmd = 0; |
198b7660 MMOD |
3061 | struct request *rq = cmd->rq; |
3062 | ||
3063 | rq->errors = 0; | |
7c832835 | 3064 | |
1da177e4 | 3065 | if (timeout) |
1a614f50 | 3066 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
1da177e4 | 3067 | |
d38ae168 MMOD |
3068 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
3069 | goto after_error_processing; | |
7c832835 | 3070 | |
d38ae168 | 3071 | switch (cmd->err_info->CommandStatus) { |
d38ae168 | 3072 | case CMD_TARGET_STATUS: |
0a9279cc | 3073 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
d38ae168 MMOD |
3074 | break; |
3075 | case CMD_DATA_UNDERRUN: | |
03bbfee5 MMOD |
3076 | if (blk_fs_request(cmd->rq)) { |
3077 | printk(KERN_WARNING "cciss: cmd %p has" | |
3078 | " completed with data underrun " | |
3079 | "reported\n", cmd); | |
c3a4d78c | 3080 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
03bbfee5 | 3081 | } |
d38ae168 MMOD |
3082 | break; |
3083 | case CMD_DATA_OVERRUN: | |
03bbfee5 MMOD |
3084 | if (blk_fs_request(cmd->rq)) |
3085 | printk(KERN_WARNING "cciss: cmd %p has" | |
3086 | " completed with data overrun " | |
3087 | "reported\n", cmd); | |
d38ae168 MMOD |
3088 | break; |
3089 | case CMD_INVALID: | |
3090 | printk(KERN_WARNING "cciss: cmd %p is " | |
3091 | "reported invalid\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_PROTOCOL_ERR: | |
3097 | printk(KERN_WARNING "cciss: cmd %p has " | |
3098 | "protocol error \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_ERROR); | |
d38ae168 MMOD |
3102 | break; |
3103 | case CMD_HARDWARE_ERR: | |
3104 | printk(KERN_WARNING "cciss: cmd %p had " | |
3105 | " hardware error\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_CONNECTION_LOST: | |
3111 | printk(KERN_WARNING "cciss: cmd %p had " | |
3112 | "connection lost\n", cmd); | |
1a614f50 SC |
3113 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3114 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3115 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3116 | break; |
3117 | case CMD_ABORTED: | |
3118 | printk(KERN_WARNING "cciss: cmd %p was " | |
3119 | "aborted\n", cmd); | |
1a614f50 SC |
3120 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3121 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3122 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
3123 | break; |
3124 | case CMD_ABORT_FAILED: | |
3125 | printk(KERN_WARNING "cciss: cmd %p reports " | |
3126 | "abort failed\n", cmd); | |
1a614f50 SC |
3127 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3128 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3129 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3130 | break; |
3131 | case CMD_UNSOLICITED_ABORT: | |
3132 | printk(KERN_WARNING "cciss%d: unsolicited " | |
3133 | "abort %p\n", h->ctlr, cmd); | |
3134 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
3135 | retry_cmd = 1; | |
3136 | printk(KERN_WARNING | |
3137 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
3138 | cmd->retry_count++; | |
3139 | } else | |
3140 | printk(KERN_WARNING | |
3141 | "cciss%d: %p retried too " | |
3142 | "many times\n", h->ctlr, cmd); | |
1a614f50 SC |
3143 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3144 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3145 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
3146 | break; |
3147 | case CMD_TIMEOUT: | |
3148 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
1a614f50 SC |
3149 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3150 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3151 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3152 | break; |
3153 | default: | |
3154 | printk(KERN_WARNING "cciss: cmd %p returned " | |
3155 | "unknown status %x\n", cmd, | |
3156 | cmd->err_info->CommandStatus); | |
1a614f50 SC |
3157 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3158 | cmd->err_info->CommandStatus, DRIVER_OK, | |
3159 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); | |
1da177e4 | 3160 | } |
d38ae168 MMOD |
3161 | |
3162 | after_error_processing: | |
3163 | ||
1da177e4 | 3164 | /* We need to return this command */ |
7c832835 BH |
3165 | if (retry_cmd) { |
3166 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 3167 | return; |
7c832835 | 3168 | } |
03bbfee5 | 3169 | cmd->rq->completion_data = cmd; |
a9925a06 | 3170 | blk_complete_request(cmd->rq); |
1da177e4 LT |
3171 | } |
3172 | ||
0c2b3908 MM |
3173 | static inline u32 cciss_tag_contains_index(u32 tag) |
3174 | { | |
5e216153 | 3175 | #define DIRECT_LOOKUP_BIT 0x10 |
0c2b3908 MM |
3176 | return tag & DIRECT_LOOKUP_BIT; |
3177 | } | |
3178 | ||
3179 | static inline u32 cciss_tag_to_index(u32 tag) | |
3180 | { | |
5e216153 | 3181 | #define DIRECT_LOOKUP_SHIFT 5 |
0c2b3908 MM |
3182 | return tag >> DIRECT_LOOKUP_SHIFT; |
3183 | } | |
3184 | ||
3185 | static inline u32 cciss_tag_discard_error_bits(u32 tag) | |
3186 | { | |
3187 | #define CCISS_ERROR_BITS 0x03 | |
3188 | return tag & ~CCISS_ERROR_BITS; | |
3189 | } | |
3190 | ||
3191 | static inline void cciss_mark_tag_indexed(u32 *tag) | |
3192 | { | |
3193 | *tag |= DIRECT_LOOKUP_BIT; | |
3194 | } | |
3195 | ||
3196 | static inline void cciss_set_tag_index(u32 *tag, u32 index) | |
3197 | { | |
3198 | *tag |= (index << DIRECT_LOOKUP_SHIFT); | |
3199 | } | |
3200 | ||
7c832835 BH |
3201 | /* |
3202 | * Get a request and submit it to the controller. | |
1da177e4 | 3203 | */ |
165125e1 | 3204 | static void do_cciss_request(struct request_queue *q) |
1da177e4 | 3205 | { |
7c832835 | 3206 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 3207 | CommandList_struct *c; |
00988a35 MMOD |
3208 | sector_t start_blk; |
3209 | int seg; | |
1da177e4 LT |
3210 | struct request *creq; |
3211 | u64bit temp64; | |
5c07a311 DB |
3212 | struct scatterlist *tmp_sg; |
3213 | SGDescriptor_struct *curr_sg; | |
1da177e4 LT |
3214 | drive_info_struct *drv; |
3215 | int i, dir; | |
5c07a311 DB |
3216 | int sg_index = 0; |
3217 | int chained = 0; | |
1da177e4 LT |
3218 | |
3219 | /* We call start_io here in case there is a command waiting on the | |
3220 | * queue that has not been sent. | |
7c832835 | 3221 | */ |
1da177e4 LT |
3222 | if (blk_queue_plugged(q)) |
3223 | goto startio; | |
3224 | ||
7c832835 | 3225 | queue: |
9934c8c0 | 3226 | creq = blk_peek_request(q); |
1da177e4 LT |
3227 | if (!creq) |
3228 | goto startio; | |
3229 | ||
5c07a311 | 3230 | BUG_ON(creq->nr_phys_segments > h->maxsgentries); |
1da177e4 | 3231 | |
7c832835 | 3232 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
3233 | goto full; |
3234 | ||
9934c8c0 | 3235 | blk_start_request(creq); |
1da177e4 | 3236 | |
5c07a311 | 3237 | tmp_sg = h->scatter_list[c->cmdindex]; |
1da177e4 LT |
3238 | spin_unlock_irq(q->queue_lock); |
3239 | ||
3240 | c->cmd_type = CMD_RWREQ; | |
3241 | c->rq = creq; | |
7c832835 BH |
3242 | |
3243 | /* fill in the request */ | |
1da177e4 | 3244 | drv = creq->rq_disk->private_data; |
b028461d | 3245 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
33079b21 MM |
3246 | /* got command from pool, so use the command block index instead */ |
3247 | /* for direct lookups. */ | |
3248 | /* The first 2 bits are reserved for controller error reporting. */ | |
0c2b3908 MM |
3249 | cciss_set_tag_index(&c->Header.Tag.lower, c->cmdindex); |
3250 | cciss_mark_tag_indexed(&c->Header.Tag.lower); | |
39ccf9a6 | 3251 | memcpy(&c->Header.LUN, drv->LunID, sizeof(drv->LunID)); |
b028461d | 3252 | c->Request.CDBLen = 10; /* 12 byte commands not in FW yet; */ |
3253 | c->Request.Type.Type = TYPE_CMD; /* It is a command. */ | |
7c832835 BH |
3254 | c->Request.Type.Attribute = ATTR_SIMPLE; |
3255 | c->Request.Type.Direction = | |
a52de245 | 3256 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
b028461d | 3257 | c->Request.Timeout = 0; /* Don't time out */ |
7c832835 | 3258 | c->Request.CDB[0] = |
00988a35 | 3259 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
83096ebf | 3260 | start_blk = blk_rq_pos(creq); |
1da177e4 | 3261 | #ifdef CCISS_DEBUG |
83096ebf TH |
3262 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", |
3263 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); | |
7c832835 | 3264 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3265 | |
5c07a311 | 3266 | sg_init_table(tmp_sg, h->maxsgentries); |
1da177e4 LT |
3267 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
3268 | ||
7c832835 | 3269 | /* get the DMA records for the setup */ |
1da177e4 LT |
3270 | if (c->Request.Type.Direction == XFER_READ) |
3271 | dir = PCI_DMA_FROMDEVICE; | |
3272 | else | |
3273 | dir = PCI_DMA_TODEVICE; | |
3274 | ||
5c07a311 DB |
3275 | curr_sg = c->SG; |
3276 | sg_index = 0; | |
3277 | chained = 0; | |
3278 | ||
7c832835 | 3279 | for (i = 0; i < seg; i++) { |
5c07a311 DB |
3280 | if (((sg_index+1) == (h->max_cmd_sgentries)) && |
3281 | !chained && ((seg - i) > 1)) { | |
5c07a311 | 3282 | /* Point to next chain block. */ |
dccc9b56 | 3283 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
5c07a311 DB |
3284 | sg_index = 0; |
3285 | chained = 1; | |
3286 | } | |
3287 | curr_sg[sg_index].Len = tmp_sg[i].length; | |
45711f1a | 3288 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
5c07a311 DB |
3289 | tmp_sg[i].offset, |
3290 | tmp_sg[i].length, dir); | |
3291 | curr_sg[sg_index].Addr.lower = temp64.val32.lower; | |
3292 | curr_sg[sg_index].Addr.upper = temp64.val32.upper; | |
3293 | curr_sg[sg_index].Ext = 0; /* we are not chaining */ | |
5c07a311 | 3294 | ++sg_index; |
1da177e4 | 3295 | } |
d45033ef SC |
3296 | if (chained) |
3297 | cciss_map_sg_chain_block(h, c, h->cmd_sg_list[c->cmdindex], | |
3298 | (seg - (h->max_cmd_sgentries - 1)) * | |
3299 | sizeof(SGDescriptor_struct)); | |
5c07a311 | 3300 | |
7c832835 BH |
3301 | /* track how many SG entries we are using */ |
3302 | if (seg > h->maxSG) | |
3303 | h->maxSG = seg; | |
1da177e4 LT |
3304 | |
3305 | #ifdef CCISS_DEBUG | |
5c07a311 DB |
3306 | printk(KERN_DEBUG "cciss: Submitting %ld sectors in %d segments " |
3307 | "chained[%d]\n", | |
3308 | blk_rq_sectors(creq), seg, chained); | |
7c832835 | 3309 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3310 | |
5e216153 MM |
3311 | c->Header.SGTotal = seg + chained; |
3312 | if (seg <= h->max_cmd_sgentries) | |
3313 | c->Header.SGList = c->Header.SGTotal; | |
3314 | else | |
5c07a311 | 3315 | c->Header.SGList = h->max_cmd_sgentries; |
5e216153 | 3316 | set_performant_mode(h, c); |
5c07a311 | 3317 | |
03bbfee5 MMOD |
3318 | if (likely(blk_fs_request(creq))) { |
3319 | if(h->cciss_read == CCISS_READ_10) { | |
3320 | c->Request.CDB[1] = 0; | |
b028461d | 3321 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; /* MSB */ |
03bbfee5 MMOD |
3322 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; |
3323 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
3324 | c->Request.CDB[5] = start_blk & 0xff; | |
b028461d | 3325 | c->Request.CDB[6] = 0; /* (sect >> 24) & 0xff; MSB */ |
83096ebf TH |
3326 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
3327 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3328 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
3329 | } else { | |
582539e5 RD |
3330 | u32 upper32 = upper_32_bits(start_blk); |
3331 | ||
03bbfee5 MMOD |
3332 | c->Request.CDBLen = 16; |
3333 | c->Request.CDB[1]= 0; | |
b028461d | 3334 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; /* MSB */ |
582539e5 RD |
3335 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; |
3336 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; | |
3337 | c->Request.CDB[5]= upper32 & 0xff; | |
03bbfee5 MMOD |
3338 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
3339 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
3340 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
3341 | c->Request.CDB[9]= start_blk & 0xff; | |
83096ebf TH |
3342 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
3343 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; | |
3344 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; | |
3345 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3346 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
3347 | } | |
3348 | } else if (blk_pc_request(creq)) { | |
3349 | c->Request.CDBLen = creq->cmd_len; | |
3350 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); | |
00988a35 | 3351 | } else { |
03bbfee5 MMOD |
3352 | printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); |
3353 | BUG(); | |
00988a35 | 3354 | } |
1da177e4 LT |
3355 | |
3356 | spin_lock_irq(q->queue_lock); | |
3357 | ||
8a3173de | 3358 | addQ(&h->reqQ, c); |
1da177e4 | 3359 | h->Qdepth++; |
7c832835 BH |
3360 | if (h->Qdepth > h->maxQsinceinit) |
3361 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
3362 | |
3363 | goto queue; | |
00988a35 | 3364 | full: |
1da177e4 | 3365 | blk_stop_queue(q); |
00988a35 | 3366 | startio: |
1da177e4 LT |
3367 | /* We will already have the driver lock here so not need |
3368 | * to lock it. | |
7c832835 | 3369 | */ |
1da177e4 LT |
3370 | start_io(h); |
3371 | } | |
3372 | ||
3da8b713 | 3373 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
3374 | { | |
3da8b713 | 3375 | return h->access.command_completed(h); |
3da8b713 | 3376 | } |
3377 | ||
3378 | static inline int interrupt_pending(ctlr_info_t *h) | |
3379 | { | |
3da8b713 | 3380 | return h->access.intr_pending(h); |
3da8b713 | 3381 | } |
3382 | ||
3383 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
3384 | { | |
2cf3af1c MM |
3385 | return !(h->msi_vector || h->msix_vector) && |
3386 | ((h->access.intr_pending(h) == 0) || | |
3387 | (h->interrupts_enabled == 0)); | |
3da8b713 | 3388 | } |
3389 | ||
0c2b3908 MM |
3390 | static inline int bad_tag(ctlr_info_t *h, u32 tag_index, |
3391 | u32 raw_tag) | |
1da177e4 | 3392 | { |
0c2b3908 MM |
3393 | if (unlikely(tag_index >= h->nr_cmds)) { |
3394 | dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); | |
3395 | return 1; | |
3396 | } | |
3397 | return 0; | |
3398 | } | |
3399 | ||
3400 | static inline void finish_cmd(ctlr_info_t *h, CommandList_struct *c, | |
3401 | u32 raw_tag) | |
3402 | { | |
3403 | removeQ(c); | |
3404 | if (likely(c->cmd_type == CMD_RWREQ)) | |
3405 | complete_command(h, c, 0); | |
3406 | else if (c->cmd_type == CMD_IOCTL_PEND) | |
3407 | complete(c->waiting); | |
3408 | #ifdef CONFIG_CISS_SCSI_TAPE | |
3409 | else if (c->cmd_type == CMD_SCSI) | |
3410 | complete_scsi_command(c, 0, raw_tag); | |
3411 | #endif | |
3412 | } | |
3413 | ||
3414 | /* process completion of an indexed ("direct lookup") command */ | |
3415 | static inline u32 process_indexed_cmd(ctlr_info_t *h, u32 raw_tag) | |
3416 | { | |
3417 | u32 tag_index; | |
1da177e4 | 3418 | CommandList_struct *c; |
0c2b3908 MM |
3419 | |
3420 | tag_index = cciss_tag_to_index(raw_tag); | |
3421 | if (bad_tag(h, tag_index, raw_tag)) | |
5e216153 | 3422 | return next_command(h); |
0c2b3908 MM |
3423 | c = h->cmd_pool + tag_index; |
3424 | finish_cmd(h, c, raw_tag); | |
5e216153 | 3425 | return next_command(h); |
0c2b3908 MM |
3426 | } |
3427 | ||
3428 | /* process completion of a non-indexed command */ | |
3429 | static inline u32 process_nonindexed_cmd(ctlr_info_t *h, u32 raw_tag) | |
3430 | { | |
3431 | u32 tag; | |
3432 | CommandList_struct *c = NULL; | |
3433 | struct hlist_node *tmp; | |
3434 | __u32 busaddr_masked, tag_masked; | |
3435 | ||
3436 | tag = cciss_tag_discard_error_bits(raw_tag); | |
3437 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { | |
3438 | busaddr_masked = cciss_tag_discard_error_bits(c->busaddr); | |
3439 | tag_masked = cciss_tag_discard_error_bits(tag); | |
3440 | if (busaddr_masked == tag_masked) { | |
3441 | finish_cmd(h, c, raw_tag); | |
5e216153 | 3442 | return next_command(h); |
0c2b3908 MM |
3443 | } |
3444 | } | |
3445 | bad_tag(h, h->nr_cmds + 1, raw_tag); | |
5e216153 | 3446 | return next_command(h); |
0c2b3908 MM |
3447 | } |
3448 | ||
3449 | static irqreturn_t do_cciss_intx(int irq, void *dev_id) | |
3450 | { | |
3451 | ctlr_info_t *h = dev_id; | |
1da177e4 | 3452 | unsigned long flags; |
0c2b3908 | 3453 | u32 raw_tag; |
1da177e4 | 3454 | |
3da8b713 | 3455 | if (interrupt_not_for_us(h)) |
1da177e4 | 3456 | return IRQ_NONE; |
1da177e4 LT |
3457 | /* |
3458 | * If there are completed commands in the completion queue, | |
3459 | * we had better do something about it. | |
3460 | */ | |
3461 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 3462 | while (interrupt_pending(h)) { |
0c2b3908 MM |
3463 | raw_tag = get_next_completion(h); |
3464 | while (raw_tag != FIFO_EMPTY) { | |
3465 | if (cciss_tag_contains_index(raw_tag)) | |
3466 | raw_tag = process_indexed_cmd(h, raw_tag); | |
3467 | else | |
3468 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
3469 | } | |
3470 | } | |
33079b21 | 3471 | |
0c2b3908 MM |
3472 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
3473 | return IRQ_HANDLED; | |
3474 | } | |
33079b21 | 3475 | |
0c2b3908 MM |
3476 | /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never |
3477 | * check the interrupt pending register because it is not set. | |
3478 | */ | |
3479 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id) | |
3480 | { | |
3481 | ctlr_info_t *h = dev_id; | |
3482 | unsigned long flags; | |
3483 | u32 raw_tag; | |
8a3173de | 3484 | |
0c2b3908 MM |
3485 | if (interrupt_not_for_us(h)) |
3486 | return IRQ_NONE; | |
3487 | /* | |
3488 | * If there are completed commands in the completion queue, | |
3489 | * we had better do something about it. | |
3490 | */ | |
3491 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3492 | raw_tag = get_next_completion(h); | |
3493 | while (raw_tag != FIFO_EMPTY) { | |
3494 | if (cciss_tag_contains_index(raw_tag)) | |
3495 | raw_tag = process_indexed_cmd(h, raw_tag); | |
3496 | else | |
3497 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
1da177e4 LT |
3498 | } |
3499 | ||
1da177e4 LT |
3500 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
3501 | return IRQ_HANDLED; | |
3502 | } | |
7c832835 | 3503 | |
b368c9dd AP |
3504 | /** |
3505 | * add_to_scan_list() - add controller to rescan queue | |
3506 | * @h: Pointer to the controller. | |
3507 | * | |
3508 | * Adds the controller to the rescan queue if not already on the queue. | |
3509 | * | |
3510 | * returns 1 if added to the queue, 0 if skipped (could be on the | |
3511 | * queue already, or the controller could be initializing or shutting | |
3512 | * down). | |
3513 | **/ | |
3514 | static int add_to_scan_list(struct ctlr_info *h) | |
3515 | { | |
3516 | struct ctlr_info *test_h; | |
3517 | int found = 0; | |
3518 | int ret = 0; | |
3519 | ||
3520 | if (h->busy_initializing) | |
3521 | return 0; | |
3522 | ||
3523 | if (!mutex_trylock(&h->busy_shutting_down)) | |
3524 | return 0; | |
3525 | ||
3526 | mutex_lock(&scan_mutex); | |
3527 | list_for_each_entry(test_h, &scan_q, scan_list) { | |
3528 | if (test_h == h) { | |
3529 | found = 1; | |
3530 | break; | |
3531 | } | |
3532 | } | |
3533 | if (!found && !h->busy_scanning) { | |
3534 | INIT_COMPLETION(h->scan_wait); | |
3535 | list_add_tail(&h->scan_list, &scan_q); | |
3536 | ret = 1; | |
3537 | } | |
3538 | mutex_unlock(&scan_mutex); | |
3539 | mutex_unlock(&h->busy_shutting_down); | |
3540 | ||
3541 | return ret; | |
3542 | } | |
3543 | ||
3544 | /** | |
3545 | * remove_from_scan_list() - remove controller from rescan queue | |
3546 | * @h: Pointer to the controller. | |
3547 | * | |
3548 | * Removes the controller from the rescan queue if present. Blocks if | |
fd8489cf SC |
3549 | * the controller is currently conducting a rescan. The controller |
3550 | * can be in one of three states: | |
3551 | * 1. Doesn't need a scan | |
3552 | * 2. On the scan list, but not scanning yet (we remove it) | |
3553 | * 3. Busy scanning (and not on the list). In this case we want to wait for | |
3554 | * the scan to complete to make sure the scanning thread for this | |
3555 | * controller is completely idle. | |
b368c9dd AP |
3556 | **/ |
3557 | static void remove_from_scan_list(struct ctlr_info *h) | |
3558 | { | |
3559 | struct ctlr_info *test_h, *tmp_h; | |
b368c9dd AP |
3560 | |
3561 | mutex_lock(&scan_mutex); | |
3562 | list_for_each_entry_safe(test_h, tmp_h, &scan_q, scan_list) { | |
fd8489cf | 3563 | if (test_h == h) { /* state 2. */ |
b368c9dd AP |
3564 | list_del(&h->scan_list); |
3565 | complete_all(&h->scan_wait); | |
3566 | mutex_unlock(&scan_mutex); | |
3567 | return; | |
3568 | } | |
3569 | } | |
fd8489cf SC |
3570 | if (h->busy_scanning) { /* state 3. */ |
3571 | mutex_unlock(&scan_mutex); | |
b368c9dd | 3572 | wait_for_completion(&h->scan_wait); |
fd8489cf SC |
3573 | } else { /* state 1, nothing to do. */ |
3574 | mutex_unlock(&scan_mutex); | |
3575 | } | |
b368c9dd AP |
3576 | } |
3577 | ||
3578 | /** | |
3579 | * scan_thread() - kernel thread used to rescan controllers | |
3580 | * @data: Ignored. | |
3581 | * | |
3582 | * A kernel thread used scan for drive topology changes on | |
3583 | * controllers. The thread processes only one controller at a time | |
3584 | * using a queue. Controllers are added to the queue using | |
3585 | * add_to_scan_list() and removed from the queue either after done | |
3586 | * processing or using remove_from_scan_list(). | |
3587 | * | |
3588 | * returns 0. | |
3589 | **/ | |
0a9279cc MM |
3590 | static int scan_thread(void *data) |
3591 | { | |
b368c9dd | 3592 | struct ctlr_info *h; |
0a9279cc | 3593 | |
b368c9dd AP |
3594 | while (1) { |
3595 | set_current_state(TASK_INTERRUPTIBLE); | |
3596 | schedule(); | |
0a9279cc MM |
3597 | if (kthread_should_stop()) |
3598 | break; | |
b368c9dd AP |
3599 | |
3600 | while (1) { | |
3601 | mutex_lock(&scan_mutex); | |
3602 | if (list_empty(&scan_q)) { | |
3603 | mutex_unlock(&scan_mutex); | |
3604 | break; | |
3605 | } | |
3606 | ||
3607 | h = list_entry(scan_q.next, | |
3608 | struct ctlr_info, | |
3609 | scan_list); | |
3610 | list_del(&h->scan_list); | |
3611 | h->busy_scanning = 1; | |
3612 | mutex_unlock(&scan_mutex); | |
3613 | ||
d06dfbd2 SC |
3614 | rebuild_lun_table(h, 0, 0); |
3615 | complete_all(&h->scan_wait); | |
3616 | mutex_lock(&scan_mutex); | |
3617 | h->busy_scanning = 0; | |
3618 | mutex_unlock(&scan_mutex); | |
b368c9dd | 3619 | } |
0a9279cc | 3620 | } |
b368c9dd | 3621 | |
0a9279cc MM |
3622 | return 0; |
3623 | } | |
3624 | ||
3625 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) | |
3626 | { | |
3627 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) | |
3628 | return 0; | |
3629 | ||
3630 | switch (c->err_info->SenseInfo[12]) { | |
3631 | case STATE_CHANGED: | |
3632 | printk(KERN_WARNING "cciss%d: a state change " | |
3633 | "detected, command retried\n", h->ctlr); | |
3634 | return 1; | |
3635 | break; | |
3636 | case LUN_FAILED: | |
3637 | printk(KERN_WARNING "cciss%d: LUN failure " | |
3638 | "detected, action required\n", h->ctlr); | |
3639 | return 1; | |
3640 | break; | |
3641 | case REPORT_LUNS_CHANGED: | |
3642 | printk(KERN_WARNING "cciss%d: report LUN data " | |
3643 | "changed\n", h->ctlr); | |
da002184 SC |
3644 | /* |
3645 | * Here, we could call add_to_scan_list and wake up the scan thread, | |
3646 | * except that it's quite likely that we will get more than one | |
3647 | * REPORT_LUNS_CHANGED condition in quick succession, which means | |
3648 | * that those which occur after the first one will likely happen | |
3649 | * *during* the scan_thread's rescan. And the rescan code is not | |
3650 | * robust enough to restart in the middle, undoing what it has already | |
3651 | * done, and it's not clear that it's even possible to do this, since | |
3652 | * part of what it does is notify the block layer, which starts | |
3653 | * doing it's own i/o to read partition tables and so on, and the | |
3654 | * driver doesn't have visibility to know what might need undoing. | |
3655 | * In any event, if possible, it is horribly complicated to get right | |
3656 | * so we just don't do it for now. | |
3657 | * | |
3658 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. | |
3659 | */ | |
0a9279cc MM |
3660 | return 1; |
3661 | break; | |
3662 | case POWER_OR_RESET: | |
3663 | printk(KERN_WARNING "cciss%d: a power on " | |
3664 | "or device reset detected\n", h->ctlr); | |
3665 | return 1; | |
3666 | break; | |
3667 | case UNIT_ATTENTION_CLEARED: | |
3668 | printk(KERN_WARNING "cciss%d: unit attention " | |
3669 | "cleared by another initiator\n", h->ctlr); | |
3670 | return 1; | |
3671 | break; | |
3672 | default: | |
3673 | printk(KERN_WARNING "cciss%d: unknown " | |
3674 | "unit attention detected\n", h->ctlr); | |
3675 | return 1; | |
3676 | } | |
3677 | } | |
3678 | ||
7c832835 | 3679 | /* |
d14c4ab5 | 3680 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 3681 | * the io functions. |
7c832835 | 3682 | * This is for debug only. |
1da177e4 LT |
3683 | */ |
3684 | #ifdef CCISS_DEBUG | |
7c832835 | 3685 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 LT |
3686 | { |
3687 | int i; | |
3688 | char temp_name[17]; | |
3689 | ||
3690 | printk("Controller Configuration information\n"); | |
3691 | printk("------------------------------------\n"); | |
7c832835 | 3692 | for (i = 0; i < 4; i++) |
1da177e4 | 3693 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
3694 | temp_name[4] = '\0'; |
3695 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 3696 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
3697 | printk(" Transport methods supported = 0x%x\n", |
3698 | readl(&(tb->TransportSupport))); | |
3699 | printk(" Transport methods active = 0x%x\n", | |
3700 | readl(&(tb->TransportActive))); | |
3701 | printk(" Requested transport Method = 0x%x\n", | |
3702 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 3703 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 3704 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 3705 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
3706 | readl(&(tb->HostWrite.CoalIntCount))); |
3707 | printk(" Max outstanding commands = 0x%d\n", | |
3708 | readl(&(tb->CmdsOutMax))); | |
3709 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
3710 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
3711 | temp_name[i] = readb(&(tb->ServerName[i])); |
3712 | temp_name[16] = '\0'; | |
3713 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 3714 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
1da177e4 | 3715 | } |
7c832835 | 3716 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3717 | |
7c832835 | 3718 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
3719 | { |
3720 | int i, offset, mem_type, bar_type; | |
7c832835 | 3721 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
3722 | return 0; |
3723 | offset = 0; | |
7c832835 BH |
3724 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
3725 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
3726 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
3727 | offset += 4; | |
3728 | else { | |
3729 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 3730 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 3731 | switch (mem_type) { |
7c832835 BH |
3732 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
3733 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
3734 | offset += 4; /* 32 bit */ | |
3735 | break; | |
3736 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
3737 | offset += 8; | |
3738 | break; | |
3739 | default: /* reserved in PCI 2.2 */ | |
3740 | printk(KERN_WARNING | |
3741 | "Base address is invalid\n"); | |
3742 | return -1; | |
1da177e4 LT |
3743 | break; |
3744 | } | |
3745 | } | |
7c832835 BH |
3746 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
3747 | return i + 1; | |
1da177e4 LT |
3748 | } |
3749 | return -1; | |
3750 | } | |
3751 | ||
5e216153 MM |
3752 | /* Fill in bucket_map[], given nsgs (the max number of |
3753 | * scatter gather elements supported) and bucket[], | |
3754 | * which is an array of 8 integers. The bucket[] array | |
3755 | * contains 8 different DMA transfer sizes (in 16 | |
3756 | * byte increments) which the controller uses to fetch | |
3757 | * commands. This function fills in bucket_map[], which | |
3758 | * maps a given number of scatter gather elements to one of | |
3759 | * the 8 DMA transfer sizes. The point of it is to allow the | |
3760 | * controller to only do as much DMA as needed to fetch the | |
3761 | * command, with the DMA transfer size encoded in the lower | |
3762 | * bits of the command address. | |
3763 | */ | |
3764 | static void calc_bucket_map(int bucket[], int num_buckets, | |
3765 | int nsgs, int *bucket_map) | |
3766 | { | |
3767 | int i, j, b, size; | |
3768 | ||
3769 | /* even a command with 0 SGs requires 4 blocks */ | |
3770 | #define MINIMUM_TRANSFER_BLOCKS 4 | |
3771 | #define NUM_BUCKETS 8 | |
3772 | /* Note, bucket_map must have nsgs+1 entries. */ | |
3773 | for (i = 0; i <= nsgs; i++) { | |
3774 | /* Compute size of a command with i SG entries */ | |
3775 | size = i + MINIMUM_TRANSFER_BLOCKS; | |
3776 | b = num_buckets; /* Assume the biggest bucket */ | |
3777 | /* Find the bucket that is just big enough */ | |
3778 | for (j = 0; j < 8; j++) { | |
3779 | if (bucket[j] >= size) { | |
3780 | b = j; | |
3781 | break; | |
3782 | } | |
3783 | } | |
3784 | /* for a command with i SG entries, use bucket b. */ | |
3785 | bucket_map[i] = b; | |
3786 | } | |
3787 | } | |
3788 | ||
3789 | static void | |
3790 | cciss_put_controller_into_performant_mode(ctlr_info_t *h) | |
3791 | { | |
3792 | int l = 0; | |
3793 | __u32 trans_support; | |
3794 | __u32 trans_offset; | |
3795 | /* | |
3796 | * 5 = 1 s/g entry or 4k | |
3797 | * 6 = 2 s/g entry or 8k | |
3798 | * 8 = 4 s/g entry or 16k | |
3799 | * 10 = 6 s/g entry or 24k | |
3800 | */ | |
3801 | int bft[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4}; | |
3802 | unsigned long register_value; | |
3803 | ||
3804 | BUILD_BUG_ON(28 > MAXSGENTRIES + 4); | |
3805 | ||
3806 | /* Attempt to put controller into performant mode if supported */ | |
3807 | /* Does board support performant mode? */ | |
3808 | trans_support = readl(&(h->cfgtable->TransportSupport)); | |
3809 | if (!(trans_support & PERFORMANT_MODE)) | |
3810 | return; | |
3811 | ||
3812 | printk(KERN_WARNING "cciss%d: Placing controller into " | |
3813 | "performant mode\n", h->ctlr); | |
3814 | /* Performant mode demands commands on a 32 byte boundary | |
3815 | * pci_alloc_consistent aligns on page boundarys already. | |
3816 | * Just need to check if divisible by 32 | |
3817 | */ | |
3818 | if ((sizeof(CommandList_struct) % 32) != 0) { | |
3819 | printk(KERN_WARNING "%s %d %s\n", | |
3820 | "cciss info: command size[", | |
3821 | (int)sizeof(CommandList_struct), | |
3822 | "] not divisible by 32, no performant mode..\n"); | |
3823 | return; | |
3824 | } | |
3825 | ||
3826 | /* Performant mode ring buffer and supporting data structures */ | |
3827 | h->reply_pool = (__u64 *)pci_alloc_consistent( | |
3828 | h->pdev, h->max_commands * sizeof(__u64), | |
3829 | &(h->reply_pool_dhandle)); | |
3830 | ||
3831 | /* Need a block fetch table for performant mode */ | |
3832 | h->blockFetchTable = kmalloc(((h->maxsgentries+1) * | |
3833 | sizeof(__u32)), GFP_KERNEL); | |
3834 | ||
3835 | if ((h->reply_pool == NULL) || (h->blockFetchTable == NULL)) | |
3836 | goto clean_up; | |
3837 | ||
3838 | h->reply_pool_wraparound = 1; /* spec: init to 1 */ | |
3839 | ||
3840 | /* Controller spec: zero out this buffer. */ | |
3841 | memset(h->reply_pool, 0, h->max_commands * sizeof(__u64)); | |
3842 | h->reply_pool_head = h->reply_pool; | |
3843 | ||
3844 | trans_offset = readl(&(h->cfgtable->TransMethodOffset)); | |
3845 | calc_bucket_map(bft, ARRAY_SIZE(bft), h->maxsgentries, | |
3846 | h->blockFetchTable); | |
3847 | writel(bft[0], &h->transtable->BlockFetch0); | |
3848 | writel(bft[1], &h->transtable->BlockFetch1); | |
3849 | writel(bft[2], &h->transtable->BlockFetch2); | |
3850 | writel(bft[3], &h->transtable->BlockFetch3); | |
3851 | writel(bft[4], &h->transtable->BlockFetch4); | |
3852 | writel(bft[5], &h->transtable->BlockFetch5); | |
3853 | writel(bft[6], &h->transtable->BlockFetch6); | |
3854 | writel(bft[7], &h->transtable->BlockFetch7); | |
3855 | ||
3856 | /* size of controller ring buffer */ | |
3857 | writel(h->max_commands, &h->transtable->RepQSize); | |
3858 | writel(1, &h->transtable->RepQCount); | |
3859 | writel(0, &h->transtable->RepQCtrAddrLow32); | |
3860 | writel(0, &h->transtable->RepQCtrAddrHigh32); | |
3861 | writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32); | |
3862 | writel(0, &h->transtable->RepQAddr0High32); | |
3863 | writel(CFGTBL_Trans_Performant, | |
3864 | &(h->cfgtable->HostWrite.TransportRequest)); | |
3865 | ||
3866 | h->transMethod = CFGTBL_Trans_Performant; | |
3867 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); | |
3868 | /* under certain very rare conditions, this can take awhile. | |
3869 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3870 | * as we enter this code.) */ | |
3871 | for (l = 0; l < MAX_CONFIG_WAIT; l++) { | |
3872 | register_value = readl(h->vaddr + SA5_DOORBELL); | |
3873 | if (!(register_value & CFGTBL_ChangeReq)) | |
3874 | break; | |
3875 | /* delay and try again */ | |
3876 | set_current_state(TASK_INTERRUPTIBLE); | |
3877 | schedule_timeout(10); | |
3878 | } | |
3879 | register_value = readl(&(h->cfgtable->TransportActive)); | |
3880 | if (!(register_value & CFGTBL_Trans_Performant)) { | |
3881 | printk(KERN_WARNING "cciss: unable to get board into" | |
3882 | " performant mode\n"); | |
3883 | return; | |
3884 | } | |
3885 | ||
3886 | /* Change the access methods to the performant access methods */ | |
3887 | h->access = SA5_performant_access; | |
3888 | ||
3889 | return; | |
3890 | clean_up: | |
3891 | kfree(h->blockFetchTable); | |
3892 | if (h->reply_pool) | |
3893 | pci_free_consistent(h->pdev, | |
3894 | h->max_commands * sizeof(__u64), | |
3895 | h->reply_pool, | |
3896 | h->reply_pool_dhandle); | |
3897 | return; | |
3898 | ||
3899 | } /* cciss_put_controller_into_performant_mode */ | |
3900 | ||
fb86a35b MM |
3901 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
3902 | * controllers that are capable. If not, we use IO-APIC mode. | |
3903 | */ | |
3904 | ||
7c832835 BH |
3905 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
3906 | struct pci_dev *pdev, __u32 board_id) | |
fb86a35b MM |
3907 | { |
3908 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3909 | int err; |
3910 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
3911 | {0, 2}, {0, 3} | |
3912 | }; | |
fb86a35b MM |
3913 | |
3914 | /* Some boards advertise MSI but don't really support it */ | |
3915 | if ((board_id == 0x40700E11) || | |
7c832835 BH |
3916 | (board_id == 0x40800E11) || |
3917 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) | |
fb86a35b MM |
3918 | goto default_int_mode; |
3919 | ||
7c832835 BH |
3920 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
3921 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); | |
3922 | if (!err) { | |
3923 | c->intr[0] = cciss_msix_entries[0].vector; | |
3924 | c->intr[1] = cciss_msix_entries[1].vector; | |
3925 | c->intr[2] = cciss_msix_entries[2].vector; | |
3926 | c->intr[3] = cciss_msix_entries[3].vector; | |
3927 | c->msix_vector = 1; | |
3928 | return; | |
3929 | } | |
3930 | if (err > 0) { | |
3931 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
3932 | "available\n", err); | |
1ecb9c0f | 3933 | goto default_int_mode; |
7c832835 BH |
3934 | } else { |
3935 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
3936 | err); | |
1ecb9c0f | 3937 | goto default_int_mode; |
7c832835 BH |
3938 | } |
3939 | } | |
3940 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { | |
3941 | if (!pci_enable_msi(pdev)) { | |
7c832835 | 3942 | c->msi_vector = 1; |
7c832835 BH |
3943 | } else { |
3944 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
7c832835 BH |
3945 | } |
3946 | } | |
1ecb9c0f | 3947 | default_int_mode: |
7c832835 | 3948 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 3949 | /* if we get here we're going to use the default interrupt mode */ |
5e216153 | 3950 | c->intr[PERF_MODE_INT] = pdev->irq; |
fb86a35b MM |
3951 | return; |
3952 | } | |
3953 | ||
7d1fd970 | 3954 | static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
1da177e4 LT |
3955 | { |
3956 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
3957 | __u32 board_id, scratchpad = 0; | |
3958 | __u64 cfg_offset; | |
3959 | __u32 cfg_base_addr; | |
3960 | __u64 cfg_base_addr_index; | |
2ec24ff1 | 3961 | int i, prod_index, err; |
5e216153 | 3962 | __u32 trans_offset; |
2ec24ff1 SC |
3963 | |
3964 | subsystem_vendor_id = pdev->subsystem_vendor; | |
3965 | subsystem_device_id = pdev->subsystem_device; | |
3966 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
3967 | subsystem_vendor_id); | |
3968 | ||
3969 | for (i = 0; i < ARRAY_SIZE(products); i++) { | |
3970 | /* Stand aside for hpsa driver on request */ | |
3971 | if (cciss_allow_hpsa && products[i].board_id == HPSA_BOUNDARY) | |
3972 | return -ENODEV; | |
3973 | if (board_id == products[i].board_id) | |
3974 | break; | |
3975 | } | |
3976 | prod_index = i; | |
3977 | if (prod_index == ARRAY_SIZE(products)) { | |
3978 | dev_warn(&pdev->dev, | |
3979 | "unrecognized board ID: 0x%08lx, ignoring.\n", | |
3980 | (unsigned long) board_id); | |
3981 | return -ENODEV; | |
3982 | } | |
1da177e4 LT |
3983 | |
3984 | /* check to see if controller has been disabled */ | |
3985 | /* BEFORE trying to enable it */ | |
7c832835 BH |
3986 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
3987 | if (!(command & 0x02)) { | |
3988 | printk(KERN_WARNING | |
3989 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 3990 | return -ENODEV; |
1da177e4 LT |
3991 | } |
3992 | ||
c33ac89b | 3993 | err = pci_enable_device(pdev); |
7c832835 | 3994 | if (err) { |
1da177e4 | 3995 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 3996 | return err; |
1da177e4 | 3997 | } |
1da177e4 | 3998 | |
4e570309 BH |
3999 | err = pci_request_regions(pdev, "cciss"); |
4000 | if (err) { | |
4001 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 4002 | "aborting\n"); |
872225ca | 4003 | return err; |
4e570309 BH |
4004 | } |
4005 | ||
1da177e4 LT |
4006 | #ifdef CCISS_DEBUG |
4007 | printk("command = %x\n", command); | |
4008 | printk("irq = %x\n", pdev->irq); | |
4009 | printk("board_id = %x\n", board_id); | |
7c832835 | 4010 | #endif /* CCISS_DEBUG */ |
1da177e4 | 4011 | |
fb86a35b MM |
4012 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
4013 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
4014 | */ | |
4015 | cciss_interrupt_mode(c, pdev, board_id); | |
1da177e4 | 4016 | |
e1438581 MM |
4017 | /* find the memory BAR */ |
4018 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
4019 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) | |
4020 | break; | |
4021 | } | |
4022 | if (i == DEVICE_COUNT_RESOURCE) { | |
4023 | printk(KERN_WARNING "cciss: No memory BAR found\n"); | |
4024 | err = -ENODEV; | |
4025 | goto err_out_free_res; | |
4026 | } | |
4027 | ||
4028 | c->paddr = pci_resource_start(pdev, i); /* addressing mode bits | |
4029 | * already removed | |
4030 | */ | |
1da177e4 | 4031 | |
1da177e4 | 4032 | #ifdef CCISS_DEBUG |
9f92f471 | 4033 | printk("address 0 = %lx\n", c->paddr); |
7c832835 | 4034 | #endif /* CCISS_DEBUG */ |
a5b92873 | 4035 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
1da177e4 LT |
4036 | |
4037 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
4038 | * We poll for up to 120 secs, once per 100ms. */ | |
7c832835 | 4039 | for (i = 0; i < 1200; i++) { |
1da177e4 LT |
4040 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
4041 | if (scratchpad == CCISS_FIRMWARE_READY) | |
4042 | break; | |
4043 | set_current_state(TASK_INTERRUPTIBLE); | |
4d761609 | 4044 | schedule_timeout(msecs_to_jiffies(100)); /* wait 100ms */ |
1da177e4 LT |
4045 | } |
4046 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
4047 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
c33ac89b | 4048 | err = -ENODEV; |
4e570309 | 4049 | goto err_out_free_res; |
1da177e4 LT |
4050 | } |
4051 | ||
4052 | /* get the address index number */ | |
4053 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
4054 | cfg_base_addr &= (__u32) 0x0000ffff; | |
4055 | #ifdef CCISS_DEBUG | |
4056 | printk("cfg base address = %x\n", cfg_base_addr); | |
7c832835 BH |
4057 | #endif /* CCISS_DEBUG */ |
4058 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); | |
1da177e4 | 4059 | #ifdef CCISS_DEBUG |
9f92f471 RD |
4060 | printk("cfg base address index = %llx\n", |
4061 | (unsigned long long)cfg_base_addr_index); | |
7c832835 | 4062 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
4063 | if (cfg_base_addr_index == -1) { |
4064 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
c33ac89b | 4065 | err = -ENODEV; |
4e570309 | 4066 | goto err_out_free_res; |
1da177e4 LT |
4067 | } |
4068 | ||
4069 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
4070 | #ifdef CCISS_DEBUG | |
9f92f471 | 4071 | printk("cfg offset = %llx\n", (unsigned long long)cfg_offset); |
7c832835 BH |
4072 | #endif /* CCISS_DEBUG */ |
4073 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
4074 | cfg_base_addr_index) + | |
4075 | cfg_offset, sizeof(CfgTable_struct)); | |
5e216153 MM |
4076 | /* Find performant mode table. */ |
4077 | trans_offset = readl(&(c->cfgtable->TransMethodOffset)); | |
4078 | c->transtable = remap_pci_mem(pci_resource_start(pdev, | |
4079 | cfg_base_addr_index) + cfg_offset+trans_offset, | |
4080 | sizeof(*c->transtable)); | |
1da177e4 LT |
4081 | c->board_id = board_id; |
4082 | ||
5e216153 MM |
4083 | #ifdef CCISS_DEBUG |
4084 | print_cfg_table(c->cfgtable); | |
4085 | #endif /* CCISS_DEBUG */ | |
1da177e4 | 4086 | |
49153998 MM |
4087 | /* Some controllers support Zero Memory Raid (ZMR). |
4088 | * When configured in ZMR mode the number of supported | |
4089 | * commands drops to 64. So instead of just setting an | |
4090 | * arbitrary value we make the driver a little smarter. | |
4091 | * We read the config table to tell us how many commands | |
4092 | * are supported on the controller then subtract 4 to | |
4093 | * leave a little room for ioctl calls. | |
4094 | */ | |
5e216153 | 4095 | c->max_commands = readl(&(c->cfgtable->MaxPerformantModeCommands)); |
5c07a311 DB |
4096 | c->maxsgentries = readl(&(c->cfgtable->MaxSGElements)); |
4097 | ||
4098 | /* | |
4099 | * Limit native command to 32 s/g elements to save dma'able memory. | |
4100 | * Howvever spec says if 0, use 31 | |
4101 | */ | |
4102 | ||
4103 | c->max_cmd_sgentries = 31; | |
4104 | if (c->maxsgentries > 512) { | |
4105 | c->max_cmd_sgentries = 32; | |
4106 | c->chainsize = c->maxsgentries - c->max_cmd_sgentries + 1; | |
4107 | c->maxsgentries -= 1; /* account for chain pointer */ | |
4108 | } else { | |
4109 | c->maxsgentries = 31; /* Default to traditional value */ | |
4110 | c->chainsize = 0; /* traditional */ | |
4111 | } | |
4112 | ||
2ec24ff1 SC |
4113 | c->product_name = products[prod_index].product_name; |
4114 | c->access = *(products[prod_index].access); | |
4115 | c->nr_cmds = c->max_commands - 4; | |
7c832835 BH |
4116 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
4117 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
4118 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
4119 | (readb(&c->cfgtable->Signature[3]) != 'S')) { | |
1da177e4 | 4120 | printk("Does not appear to be a valid CISS config table\n"); |
c33ac89b | 4121 | err = -ENODEV; |
4e570309 | 4122 | goto err_out_free_res; |
1da177e4 | 4123 | } |
1da177e4 | 4124 | #ifdef CONFIG_X86 |
7c832835 BH |
4125 | { |
4126 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
4127 | __u32 prefetch; | |
4128 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
4129 | prefetch |= 0x100; | |
4130 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
4131 | } | |
1da177e4 LT |
4132 | #endif |
4133 | ||
8bf50f71 MMOD |
4134 | /* Disabling DMA prefetch and refetch for the P600. |
4135 | * An ASIC bug may result in accesses to invalid memory addresses. | |
4136 | * We've disabled prefetch for some time now. Testing with XEN | |
4137 | * kernels revealed a bug in the refetch if dom0 resides on a P600. | |
f92e2f5f MM |
4138 | */ |
4139 | if(board_id == 0x3225103C) { | |
5e216153 | 4140 | __u32 dma_prefetch; |
8bf50f71 | 4141 | __u32 dma_refetch; |
f92e2f5f MM |
4142 | dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); |
4143 | dma_prefetch |= 0x8000; | |
4144 | writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); | |
8bf50f71 MMOD |
4145 | pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch); |
4146 | dma_refetch |= 0x1; | |
4147 | pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch); | |
f92e2f5f MM |
4148 | } |
4149 | ||
1da177e4 | 4150 | #ifdef CCISS_DEBUG |
5e216153 | 4151 | printk(KERN_WARNING "Trying to put board into Performant mode\n"); |
7c832835 | 4152 | #endif /* CCISS_DEBUG */ |
b14aa6dc | 4153 | cciss_put_controller_into_performant_mode(c); |
1da177e4 LT |
4154 | return 0; |
4155 | ||
5faad620 | 4156 | err_out_free_res: |
872225ca MM |
4157 | /* |
4158 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4159 | * Smart Array controllers that pci_enable_device does not undo | |
4160 | */ | |
4e570309 | 4161 | pci_release_regions(pdev); |
c33ac89b | 4162 | return err; |
1da177e4 LT |
4163 | } |
4164 | ||
6ae5ce8e MM |
4165 | /* Function to find the first free pointer into our hba[] array |
4166 | * Returns -1 if no free entries are left. | |
7c832835 | 4167 | */ |
1da177e4 LT |
4168 | static int alloc_cciss_hba(void) |
4169 | { | |
799202cb | 4170 | int i; |
1da177e4 | 4171 | |
7c832835 | 4172 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
4173 | if (!hba[i]) { |
4174 | ctlr_info_t *p; | |
f2912a12 | 4175 | |
06ff37ff | 4176 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
4177 | if (!p) |
4178 | goto Enomem; | |
1da177e4 LT |
4179 | hba[i] = p; |
4180 | return i; | |
4181 | } | |
4182 | } | |
4183 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 4184 | " of %d controllers.\n", MAX_CTLR); |
799202cb MM |
4185 | return -1; |
4186 | Enomem: | |
1da177e4 | 4187 | printk(KERN_ERR "cciss: out of memory.\n"); |
1da177e4 LT |
4188 | return -1; |
4189 | } | |
4190 | ||
2c935593 | 4191 | static void free_hba(int n) |
1da177e4 | 4192 | { |
2c935593 SC |
4193 | ctlr_info_t *h = hba[n]; |
4194 | int i; | |
1da177e4 | 4195 | |
2c935593 SC |
4196 | hba[n] = NULL; |
4197 | for (i = 0; i < h->highest_lun + 1; i++) | |
4198 | if (h->gendisk[i] != NULL) | |
4199 | put_disk(h->gendisk[i]); | |
4200 | kfree(h); | |
1da177e4 LT |
4201 | } |
4202 | ||
82eb03cf CC |
4203 | /* Send a message CDB to the firmware. */ |
4204 | static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) | |
4205 | { | |
4206 | typedef struct { | |
4207 | CommandListHeader_struct CommandHeader; | |
4208 | RequestBlock_struct Request; | |
4209 | ErrDescriptor_struct ErrorDescriptor; | |
4210 | } Command; | |
4211 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); | |
4212 | Command *cmd; | |
4213 | dma_addr_t paddr64; | |
4214 | uint32_t paddr32, tag; | |
4215 | void __iomem *vaddr; | |
4216 | int i, err; | |
4217 | ||
4218 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
4219 | if (vaddr == NULL) | |
4220 | return -ENOMEM; | |
4221 | ||
4222 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the | |
4223 | CCISS commands, so they must be allocated from the lower 4GiB of | |
4224 | memory. */ | |
e930438c | 4225 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
82eb03cf CC |
4226 | if (err) { |
4227 | iounmap(vaddr); | |
4228 | return -ENOMEM; | |
4229 | } | |
4230 | ||
4231 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); | |
4232 | if (cmd == NULL) { | |
4233 | iounmap(vaddr); | |
4234 | return -ENOMEM; | |
4235 | } | |
4236 | ||
4237 | /* This must fit, because of the 32-bit consistent DMA mask. Also, | |
4238 | although there's no guarantee, we assume that the address is at | |
4239 | least 4-byte aligned (most likely, it's page-aligned). */ | |
4240 | paddr32 = paddr64; | |
4241 | ||
4242 | cmd->CommandHeader.ReplyQueue = 0; | |
4243 | cmd->CommandHeader.SGList = 0; | |
4244 | cmd->CommandHeader.SGTotal = 0; | |
4245 | cmd->CommandHeader.Tag.lower = paddr32; | |
4246 | cmd->CommandHeader.Tag.upper = 0; | |
4247 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); | |
4248 | ||
4249 | cmd->Request.CDBLen = 16; | |
4250 | cmd->Request.Type.Type = TYPE_MSG; | |
4251 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; | |
4252 | cmd->Request.Type.Direction = XFER_NONE; | |
4253 | cmd->Request.Timeout = 0; /* Don't time out */ | |
4254 | cmd->Request.CDB[0] = opcode; | |
4255 | cmd->Request.CDB[1] = type; | |
4256 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ | |
4257 | ||
4258 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); | |
4259 | cmd->ErrorDescriptor.Addr.upper = 0; | |
4260 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); | |
4261 | ||
4262 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); | |
4263 | ||
4264 | for (i = 0; i < 10; i++) { | |
4265 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); | |
4266 | if ((tag & ~3) == paddr32) | |
4267 | break; | |
4268 | schedule_timeout_uninterruptible(HZ); | |
4269 | } | |
4270 | ||
4271 | iounmap(vaddr); | |
4272 | ||
4273 | /* we leak the DMA buffer here ... no choice since the controller could | |
4274 | still complete the command. */ | |
4275 | if (i == 10) { | |
4276 | printk(KERN_ERR "cciss: controller message %02x:%02x timed out\n", | |
4277 | opcode, type); | |
4278 | return -ETIMEDOUT; | |
4279 | } | |
4280 | ||
4281 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); | |
4282 | ||
4283 | if (tag & 2) { | |
4284 | printk(KERN_ERR "cciss: controller message %02x:%02x failed\n", | |
4285 | opcode, type); | |
4286 | return -EIO; | |
4287 | } | |
4288 | ||
4289 | printk(KERN_INFO "cciss: controller message %02x:%02x succeeded\n", | |
4290 | opcode, type); | |
4291 | return 0; | |
4292 | } | |
4293 | ||
4294 | #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0) | |
4295 | #define cciss_noop(p) cciss_message(p, 3, 0) | |
4296 | ||
4297 | static __devinit int cciss_reset_msi(struct pci_dev *pdev) | |
4298 | { | |
4299 | /* the #defines are stolen from drivers/pci/msi.h. */ | |
4300 | #define msi_control_reg(base) (base + PCI_MSI_FLAGS) | |
4301 | #define PCI_MSIX_FLAGS_ENABLE (1 << 15) | |
4302 | ||
4303 | int pos; | |
4304 | u16 control = 0; | |
4305 | ||
4306 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); | |
4307 | if (pos) { | |
4308 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
4309 | if (control & PCI_MSI_FLAGS_ENABLE) { | |
4310 | printk(KERN_INFO "cciss: resetting MSI\n"); | |
4311 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE); | |
4312 | } | |
4313 | } | |
4314 | ||
4315 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); | |
4316 | if (pos) { | |
4317 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
4318 | if (control & PCI_MSIX_FLAGS_ENABLE) { | |
4319 | printk(KERN_INFO "cciss: resetting MSI-X\n"); | |
4320 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE); | |
4321 | } | |
4322 | } | |
4323 | ||
4324 | return 0; | |
4325 | } | |
4326 | ||
4327 | /* This does a hard reset of the controller using PCI power management | |
4328 | * states. */ | |
4329 | static __devinit int cciss_hard_reset_controller(struct pci_dev *pdev) | |
4330 | { | |
4331 | u16 pmcsr, saved_config_space[32]; | |
4332 | int i, pos; | |
4333 | ||
4334 | printk(KERN_INFO "cciss: using PCI PM to reset controller\n"); | |
4335 | ||
4336 | /* This is very nearly the same thing as | |
4337 | ||
4338 | pci_save_state(pci_dev); | |
4339 | pci_set_power_state(pci_dev, PCI_D3hot); | |
4340 | pci_set_power_state(pci_dev, PCI_D0); | |
4341 | pci_restore_state(pci_dev); | |
4342 | ||
4343 | but we can't use these nice canned kernel routines on | |
4344 | kexec, because they also check the MSI/MSI-X state in PCI | |
4345 | configuration space and do the wrong thing when it is | |
4346 | set/cleared. Also, the pci_save/restore_state functions | |
4347 | violate the ordering requirements for restoring the | |
4348 | configuration space from the CCISS document (see the | |
4349 | comment below). So we roll our own .... */ | |
4350 | ||
4351 | for (i = 0; i < 32; i++) | |
4352 | pci_read_config_word(pdev, 2*i, &saved_config_space[i]); | |
4353 | ||
4354 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); | |
4355 | if (pos == 0) { | |
4356 | printk(KERN_ERR "cciss_reset_controller: PCI PM not supported\n"); | |
4357 | return -ENODEV; | |
4358 | } | |
4359 | ||
4360 | /* Quoting from the Open CISS Specification: "The Power | |
4361 | * Management Control/Status Register (CSR) controls the power | |
4362 | * state of the device. The normal operating state is D0, | |
4363 | * CSR=00h. The software off state is D3, CSR=03h. To reset | |
4364 | * the controller, place the interface device in D3 then to | |
4365 | * D0, this causes a secondary PCI reset which will reset the | |
4366 | * controller." */ | |
4367 | ||
4368 | /* enter the D3hot power management state */ | |
4369 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); | |
4370 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4371 | pmcsr |= PCI_D3hot; | |
4372 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
4373 | ||
4374 | schedule_timeout_uninterruptible(HZ >> 1); | |
4375 | ||
4376 | /* enter the D0 power management state */ | |
4377 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4378 | pmcsr |= PCI_D0; | |
4379 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
4380 | ||
4381 | schedule_timeout_uninterruptible(HZ >> 1); | |
4382 | ||
4383 | /* Restore the PCI configuration space. The Open CISS | |
4384 | * Specification says, "Restore the PCI Configuration | |
4385 | * Registers, offsets 00h through 60h. It is important to | |
4386 | * restore the command register, 16-bits at offset 04h, | |
4387 | * last. Do not restore the configuration status register, | |
4388 | * 16-bits at offset 06h." Note that the offset is 2*i. */ | |
4389 | for (i = 0; i < 32; i++) { | |
4390 | if (i == 2 || i == 3) | |
4391 | continue; | |
4392 | pci_write_config_word(pdev, 2*i, saved_config_space[i]); | |
4393 | } | |
4394 | wmb(); | |
4395 | pci_write_config_word(pdev, 4, saved_config_space[2]); | |
4396 | ||
4397 | return 0; | |
4398 | } | |
4399 | ||
1da177e4 LT |
4400 | /* |
4401 | * This is it. Find all the controllers and register them. I really hate | |
4402 | * stealing all these major device numbers. | |
4403 | * returns the number of block devices registered. | |
4404 | */ | |
4405 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 4406 | const struct pci_device_id *ent) |
1da177e4 | 4407 | { |
1da177e4 | 4408 | int i; |
799202cb | 4409 | int j = 0; |
5c07a311 | 4410 | int k = 0; |
1da177e4 | 4411 | int rc; |
22bece00 | 4412 | int dac, return_code; |
212a5026 | 4413 | InquiryData_struct *inq_buff; |
1da177e4 | 4414 | |
82eb03cf CC |
4415 | if (reset_devices) { |
4416 | /* Reset the controller with a PCI power-cycle */ | |
4417 | if (cciss_hard_reset_controller(pdev) || cciss_reset_msi(pdev)) | |
4418 | return -ENODEV; | |
4419 | ||
5e18cfd0 JA |
4420 | /* Now try to get the controller to respond to a no-op. Some |
4421 | devices (notably the HP Smart Array 5i Controller) need | |
4422 | up to 30 seconds to respond. */ | |
5e4c91c8 | 4423 | for (i=0; i<30; i++) { |
82eb03cf CC |
4424 | if (cciss_noop(pdev) == 0) |
4425 | break; | |
5e4c91c8 JA |
4426 | |
4427 | schedule_timeout_uninterruptible(HZ); | |
4428 | } | |
4429 | if (i == 30) { | |
4430 | printk(KERN_ERR "cciss: controller seems dead\n"); | |
4431 | return -EBUSY; | |
82eb03cf CC |
4432 | } |
4433 | } | |
4434 | ||
1da177e4 | 4435 | i = alloc_cciss_hba(); |
7c832835 | 4436 | if (i < 0) |
e2019b58 | 4437 | return -1; |
1f8ef380 | 4438 | hba[i]->busy_initializing = 1; |
8a3173de JA |
4439 | INIT_HLIST_HEAD(&hba[i]->cmpQ); |
4440 | INIT_HLIST_HEAD(&hba[i]->reqQ); | |
b368c9dd | 4441 | mutex_init(&hba[i]->busy_shutting_down); |
1f8ef380 | 4442 | |
1da177e4 | 4443 | if (cciss_pci_init(hba[i], pdev) != 0) |
2cfa948c | 4444 | goto clean_no_release_regions; |
1da177e4 LT |
4445 | |
4446 | sprintf(hba[i]->devname, "cciss%d", i); | |
4447 | hba[i]->ctlr = i; | |
4448 | hba[i]->pdev = pdev; | |
4449 | ||
b368c9dd AP |
4450 | init_completion(&hba[i]->scan_wait); |
4451 | ||
7fe06326 AP |
4452 | if (cciss_create_hba_sysfs_entry(hba[i])) |
4453 | goto clean0; | |
4454 | ||
1da177e4 | 4455 | /* configure PCI DMA stuff */ |
6a35528a | 4456 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
40aabb58 | 4457 | dac = 1; |
284901a9 | 4458 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
40aabb58 | 4459 | dac = 0; |
1da177e4 | 4460 | else { |
40aabb58 | 4461 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
4462 | goto clean1; |
4463 | } | |
4464 | ||
4465 | /* | |
4466 | * register with the major number, or get a dynamic major number | |
4467 | * by passing 0 as argument. This is done for greater than | |
4468 | * 8 controller support. | |
4469 | */ | |
4470 | if (i < MAX_CTLR_ORIG) | |
564de74a | 4471 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 4472 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 4473 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 4474 | printk(KERN_ERR |
7c832835 BH |
4475 | "cciss: Unable to get major number %d for %s " |
4476 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 4477 | goto clean1; |
7c832835 | 4478 | } else { |
1da177e4 LT |
4479 | if (i >= MAX_CTLR_ORIG) |
4480 | hba[i]->major = rc; | |
4481 | } | |
4482 | ||
4483 | /* make sure the board interrupts are off */ | |
4484 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
0c2b3908 | 4485 | if (hba[i]->msi_vector || hba[i]->msix_vector) { |
256aea3f | 4486 | if (request_irq(hba[i]->intr[PERF_MODE_INT], |
0c2b3908 MM |
4487 | do_cciss_msix_intr, |
4488 | IRQF_DISABLED, hba[i]->devname, hba[i])) { | |
4489 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", | |
256aea3f | 4490 | hba[i]->intr[PERF_MODE_INT], hba[i]->devname); |
0c2b3908 MM |
4491 | goto clean2; |
4492 | } | |
4493 | } else { | |
256aea3f | 4494 | if (request_irq(hba[i]->intr[PERF_MODE_INT], do_cciss_intx, |
0c2b3908 MM |
4495 | IRQF_DISABLED, hba[i]->devname, hba[i])) { |
4496 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", | |
256aea3f | 4497 | hba[i]->intr[PERF_MODE_INT], hba[i]->devname); |
0c2b3908 MM |
4498 | goto clean2; |
4499 | } | |
1da177e4 | 4500 | } |
40aabb58 BH |
4501 | |
4502 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 | 4503 | hba[i]->devname, pdev->device, pci_name(pdev), |
5e216153 | 4504 | hba[i]->intr[PERF_MODE_INT], dac ? "" : " not"); |
7c832835 BH |
4505 | |
4506 | hba[i]->cmd_pool_bits = | |
061837bc JL |
4507 | kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
4508 | * sizeof(unsigned long), GFP_KERNEL); | |
7c832835 BH |
4509 | hba[i]->cmd_pool = (CommandList_struct *) |
4510 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 4511 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
4512 | &(hba[i]->cmd_pool_dhandle)); |
4513 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
4514 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 4515 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
4516 | &(hba[i]->errinfo_pool_dhandle)); |
4517 | if ((hba[i]->cmd_pool_bits == NULL) | |
4518 | || (hba[i]->cmd_pool == NULL) | |
4519 | || (hba[i]->errinfo_pool == NULL)) { | |
4520 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
4521 | goto clean4; |
4522 | } | |
5c07a311 DB |
4523 | |
4524 | /* Need space for temp scatter list */ | |
4525 | hba[i]->scatter_list = kmalloc(hba[i]->max_commands * | |
4526 | sizeof(struct scatterlist *), | |
4527 | GFP_KERNEL); | |
4528 | for (k = 0; k < hba[i]->nr_cmds; k++) { | |
4529 | hba[i]->scatter_list[k] = kmalloc(sizeof(struct scatterlist) * | |
4530 | hba[i]->maxsgentries, | |
4531 | GFP_KERNEL); | |
4532 | if (hba[i]->scatter_list[k] == NULL) { | |
4533 | printk(KERN_ERR "cciss%d: could not allocate " | |
4534 | "s/g lists\n", i); | |
4535 | goto clean4; | |
4536 | } | |
4537 | } | |
49fc5601 SC |
4538 | hba[i]->cmd_sg_list = cciss_allocate_sg_chain_blocks(hba[i], |
4539 | hba[i]->chainsize, hba[i]->nr_cmds); | |
4540 | if (!hba[i]->cmd_sg_list && hba[i]->chainsize > 0) | |
5c07a311 | 4541 | goto clean4; |
5c07a311 | 4542 | |
1da177e4 | 4543 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 4544 | |
7c832835 BH |
4545 | /* Initialize the pdev driver private data. |
4546 | have it point to hba[i]. */ | |
1da177e4 | 4547 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
4548 | /* command and error info recs zeroed out before |
4549 | they are used */ | |
4550 | memset(hba[i]->cmd_pool_bits, 0, | |
061837bc JL |
4551 | DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
4552 | * sizeof(unsigned long)); | |
1da177e4 | 4553 | |
6ae5ce8e MM |
4554 | hba[i]->num_luns = 0; |
4555 | hba[i]->highest_lun = -1; | |
4556 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
9cef0d2f | 4557 | hba[i]->drv[j] = NULL; |
6ae5ce8e MM |
4558 | hba[i]->gendisk[j] = NULL; |
4559 | } | |
1da177e4 LT |
4560 | |
4561 | cciss_scsi_setup(i); | |
4562 | ||
4563 | /* Turn the interrupts on so we can service requests */ | |
4564 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
4565 | ||
22bece00 MM |
4566 | /* Get the firmware version */ |
4567 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
4568 | if (inq_buff == NULL) { | |
4569 | printk(KERN_ERR "cciss: out of memory\n"); | |
4570 | goto clean4; | |
4571 | } | |
4572 | ||
4573 | return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff, | |
b57695fe | 4574 | sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); |
22bece00 MM |
4575 | if (return_code == IO_OK) { |
4576 | hba[i]->firm_ver[0] = inq_buff->data_byte[32]; | |
4577 | hba[i]->firm_ver[1] = inq_buff->data_byte[33]; | |
4578 | hba[i]->firm_ver[2] = inq_buff->data_byte[34]; | |
4579 | hba[i]->firm_ver[3] = inq_buff->data_byte[35]; | |
4580 | } else { /* send command failed */ | |
4581 | printk(KERN_WARNING "cciss: unable to determine firmware" | |
4582 | " version of controller\n"); | |
4583 | } | |
212a5026 | 4584 | kfree(inq_buff); |
22bece00 | 4585 | |
1da177e4 | 4586 | cciss_procinit(i); |
92c4231a | 4587 | |
5c07a311 | 4588 | hba[i]->cciss_max_sectors = 8192; |
92c4231a | 4589 | |
2d11d993 | 4590 | rebuild_lun_table(hba[i], 1, 0); |
d6dbf42e | 4591 | hba[i]->busy_initializing = 0; |
e2019b58 | 4592 | return 1; |
1da177e4 | 4593 | |
6ae5ce8e | 4594 | clean4: |
6044ec88 | 4595 | kfree(hba[i]->cmd_pool_bits); |
5c07a311 DB |
4596 | /* Free up sg elements */ |
4597 | for (k = 0; k < hba[i]->nr_cmds; k++) | |
4598 | kfree(hba[i]->scatter_list[k]); | |
4599 | kfree(hba[i]->scatter_list); | |
49fc5601 | 4600 | cciss_free_sg_chain_blocks(hba[i]->cmd_sg_list, hba[i]->nr_cmds); |
7c832835 | 4601 | if (hba[i]->cmd_pool) |
1da177e4 | 4602 | pci_free_consistent(hba[i]->pdev, |
f880632f | 4603 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
4604 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
4605 | if (hba[i]->errinfo_pool) | |
1da177e4 | 4606 | pci_free_consistent(hba[i]->pdev, |
f880632f | 4607 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
4608 | hba[i]->errinfo_pool, |
4609 | hba[i]->errinfo_pool_dhandle); | |
5e216153 | 4610 | free_irq(hba[i]->intr[PERF_MODE_INT], hba[i]); |
6ae5ce8e | 4611 | clean2: |
1da177e4 | 4612 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
6ae5ce8e | 4613 | clean1: |
7fe06326 AP |
4614 | cciss_destroy_hba_sysfs_entry(hba[i]); |
4615 | clean0: | |
2cfa948c SC |
4616 | pci_release_regions(pdev); |
4617 | clean_no_release_regions: | |
1f8ef380 | 4618 | hba[i]->busy_initializing = 0; |
9cef0d2f | 4619 | |
872225ca MM |
4620 | /* |
4621 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4622 | * Smart Array controllers that pci_enable_device does not undo | |
4623 | */ | |
799202cb | 4624 | pci_set_drvdata(pdev, NULL); |
61808c2b | 4625 | free_hba(i); |
e2019b58 | 4626 | return -1; |
1da177e4 LT |
4627 | } |
4628 | ||
e9ca75b5 | 4629 | static void cciss_shutdown(struct pci_dev *pdev) |
1da177e4 | 4630 | { |
29009a03 SC |
4631 | ctlr_info_t *h; |
4632 | char *flush_buf; | |
7c832835 | 4633 | int return_code; |
1da177e4 | 4634 | |
29009a03 SC |
4635 | h = pci_get_drvdata(pdev); |
4636 | flush_buf = kzalloc(4, GFP_KERNEL); | |
4637 | if (!flush_buf) { | |
4638 | printk(KERN_WARNING | |
4639 | "cciss:%d cache not flushed, out of memory.\n", | |
4640 | h->ctlr); | |
e9ca75b5 | 4641 | return; |
e9ca75b5 | 4642 | } |
29009a03 SC |
4643 | /* write all data in the battery backed cache to disk */ |
4644 | memset(flush_buf, 0, 4); | |
4645 | return_code = sendcmd_withirq(CCISS_CACHE_FLUSH, h->ctlr, flush_buf, | |
4646 | 4, 0, CTLR_LUNID, TYPE_CMD); | |
4647 | kfree(flush_buf); | |
4648 | if (return_code != IO_OK) | |
4649 | printk(KERN_WARNING "cciss%d: Error flushing cache\n", | |
4650 | h->ctlr); | |
4651 | h->access.set_intr_mask(h, CCISS_INTR_OFF); | |
5e216153 | 4652 | free_irq(h->intr[PERF_MODE_INT], h); |
e9ca75b5 GB |
4653 | } |
4654 | ||
4655 | static void __devexit cciss_remove_one(struct pci_dev *pdev) | |
4656 | { | |
4657 | ctlr_info_t *tmp_ptr; | |
4658 | int i, j; | |
4659 | ||
7c832835 BH |
4660 | if (pci_get_drvdata(pdev) == NULL) { |
4661 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
4662 | return; |
4663 | } | |
0a9279cc | 4664 | |
1da177e4 LT |
4665 | tmp_ptr = pci_get_drvdata(pdev); |
4666 | i = tmp_ptr->ctlr; | |
7c832835 | 4667 | if (hba[i] == NULL) { |
1da177e4 | 4668 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 4669 | "already be removed \n"); |
1da177e4 LT |
4670 | return; |
4671 | } | |
b6550777 | 4672 | |
b368c9dd | 4673 | mutex_lock(&hba[i]->busy_shutting_down); |
0a9279cc | 4674 | |
b368c9dd | 4675 | remove_from_scan_list(hba[i]); |
b6550777 BH |
4676 | remove_proc_entry(hba[i]->devname, proc_cciss); |
4677 | unregister_blkdev(hba[i]->major, hba[i]->devname); | |
4678 | ||
4679 | /* remove it from the disk list */ | |
4680 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
4681 | struct gendisk *disk = hba[i]->gendisk[j]; | |
4682 | if (disk) { | |
165125e1 | 4683 | struct request_queue *q = disk->queue; |
b6550777 | 4684 | |
097d0264 | 4685 | if (disk->flags & GENHD_FL_UP) { |
8ce51966 | 4686 | cciss_destroy_ld_sysfs_entry(hba[i], j, 1); |
b6550777 | 4687 | del_gendisk(disk); |
097d0264 | 4688 | } |
b6550777 BH |
4689 | if (q) |
4690 | blk_cleanup_queue(q); | |
4691 | } | |
4692 | } | |
4693 | ||
ba198efb | 4694 | #ifdef CONFIG_CISS_SCSI_TAPE |
b6550777 | 4695 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
ba198efb | 4696 | #endif |
b6550777 | 4697 | |
e9ca75b5 | 4698 | cciss_shutdown(pdev); |
fb86a35b MM |
4699 | |
4700 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
4701 | if (hba[i]->msix_vector) |
4702 | pci_disable_msix(hba[i]->pdev); | |
4703 | else if (hba[i]->msi_vector) | |
4704 | pci_disable_msi(hba[i]->pdev); | |
4705 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 4706 | |
1da177e4 | 4707 | iounmap(hba[i]->vaddr); |
1da177e4 | 4708 | |
f880632f | 4709 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
1da177e4 | 4710 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
f880632f | 4711 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 | 4712 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
1da177e4 | 4713 | kfree(hba[i]->cmd_pool_bits); |
5c07a311 DB |
4714 | /* Free up sg elements */ |
4715 | for (j = 0; j < hba[i]->nr_cmds; j++) | |
4716 | kfree(hba[i]->scatter_list[j]); | |
4717 | kfree(hba[i]->scatter_list); | |
49fc5601 | 4718 | cciss_free_sg_chain_blocks(hba[i]->cmd_sg_list, hba[i]->nr_cmds); |
872225ca MM |
4719 | /* |
4720 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4721 | * Smart Array controllers that pci_enable_device does not undo | |
4722 | */ | |
7c832835 | 4723 | pci_release_regions(pdev); |
4e570309 | 4724 | pci_set_drvdata(pdev, NULL); |
7fe06326 | 4725 | cciss_destroy_hba_sysfs_entry(hba[i]); |
b368c9dd | 4726 | mutex_unlock(&hba[i]->busy_shutting_down); |
1da177e4 | 4727 | free_hba(i); |
7c832835 | 4728 | } |
1da177e4 LT |
4729 | |
4730 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
4731 | .name = "cciss", |
4732 | .probe = cciss_init_one, | |
4733 | .remove = __devexit_p(cciss_remove_one), | |
4734 | .id_table = cciss_pci_device_id, /* id_table */ | |
e9ca75b5 | 4735 | .shutdown = cciss_shutdown, |
1da177e4 LT |
4736 | }; |
4737 | ||
4738 | /* | |
4739 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 4740 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
4741 | */ |
4742 | static int __init cciss_init(void) | |
4743 | { | |
7fe06326 AP |
4744 | int err; |
4745 | ||
10cbda97 JA |
4746 | /* |
4747 | * The hardware requires that commands are aligned on a 64-bit | |
4748 | * boundary. Given that we use pci_alloc_consistent() to allocate an | |
4749 | * array of them, the size must be a multiple of 8 bytes. | |
4750 | */ | |
1b7d0d28 | 4751 | BUILD_BUG_ON(sizeof(CommandList_struct) % COMMANDLIST_ALIGNMENT); |
1da177e4 LT |
4752 | printk(KERN_INFO DRIVER_NAME "\n"); |
4753 | ||
7fe06326 AP |
4754 | err = bus_register(&cciss_bus_type); |
4755 | if (err) | |
4756 | return err; | |
4757 | ||
b368c9dd AP |
4758 | /* Start the scan thread */ |
4759 | cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan"); | |
4760 | if (IS_ERR(cciss_scan_thread)) { | |
4761 | err = PTR_ERR(cciss_scan_thread); | |
4762 | goto err_bus_unregister; | |
4763 | } | |
4764 | ||
1da177e4 | 4765 | /* Register for our PCI devices */ |
7fe06326 AP |
4766 | err = pci_register_driver(&cciss_pci_driver); |
4767 | if (err) | |
b368c9dd | 4768 | goto err_thread_stop; |
7fe06326 | 4769 | |
617e1344 | 4770 | return err; |
7fe06326 | 4771 | |
b368c9dd AP |
4772 | err_thread_stop: |
4773 | kthread_stop(cciss_scan_thread); | |
4774 | err_bus_unregister: | |
7fe06326 | 4775 | bus_unregister(&cciss_bus_type); |
b368c9dd | 4776 | |
7fe06326 | 4777 | return err; |
1da177e4 LT |
4778 | } |
4779 | ||
4780 | static void __exit cciss_cleanup(void) | |
4781 | { | |
4782 | int i; | |
4783 | ||
4784 | pci_unregister_driver(&cciss_pci_driver); | |
4785 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
4786 | for (i = 0; i < MAX_CTLR; i++) { |
4787 | if (hba[i] != NULL) { | |
1da177e4 | 4788 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 4789 | " controller %d\n", i); |
1da177e4 LT |
4790 | cciss_remove_one(hba[i]->pdev); |
4791 | } | |
4792 | } | |
b368c9dd | 4793 | kthread_stop(cciss_scan_thread); |
928b4d8c | 4794 | remove_proc_entry("driver/cciss", NULL); |
7fe06326 | 4795 | bus_unregister(&cciss_bus_type); |
1da177e4 LT |
4796 | } |
4797 | ||
4798 | module_init(cciss_init); | |
4799 | module_exit(cciss_cleanup); |