]>
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 | 180 | static int cciss_open(struct block_device *bdev, fmode_t mode); |
6e9624b8 | 181 | static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode); |
ef7822c2 | 182 | static int cciss_release(struct gendisk *disk, fmode_t mode); |
8a6cfeb6 AB |
183 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
184 | unsigned int cmd, unsigned long arg); | |
ef7822c2 | 185 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
7c832835 | 186 | unsigned int cmd, unsigned long arg); |
a885c8c4 | 187 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
1da177e4 | 188 | |
1da177e4 | 189 | static int cciss_revalidate(struct gendisk *disk); |
2d11d993 | 190 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, int via_ioctl); |
a0ea8622 | 191 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
2d11d993 | 192 | int clear_all, int via_ioctl); |
1da177e4 | 193 | |
7b838bde | 194 | static void cciss_read_capacity(int ctlr, int logvol, |
00988a35 | 195 | sector_t *total_size, unsigned int *block_size); |
7b838bde | 196 | static void cciss_read_capacity_16(int ctlr, int logvol, |
00988a35 MMOD |
197 | sector_t *total_size, unsigned int *block_size); |
198 | static void cciss_geometry_inquiry(int ctlr, int logvol, | |
7b838bde | 199 | sector_t total_size, |
00988a35 | 200 | unsigned int block_size, InquiryData_struct *inq_buff, |
7c832835 | 201 | drive_info_struct *drv); |
dac5488a | 202 | static void __devinit cciss_interrupt_mode(ctlr_info_t *); |
7c832835 | 203 | static void start_io(ctlr_info_t *h); |
7c832835 | 204 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
b57695fe | 205 | __u8 page_code, unsigned char scsi3addr[], |
206 | int cmd_type); | |
85cc61ae | 207 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
208 | int attempt_retry); | |
209 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c); | |
1da177e4 | 210 | |
d6f4965d | 211 | static int add_to_scan_list(struct ctlr_info *h); |
0a9279cc MM |
212 | static int scan_thread(void *data); |
213 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c); | |
617e1344 SC |
214 | static void cciss_hba_release(struct device *dev); |
215 | static void cciss_device_release(struct device *dev); | |
361e9b07 | 216 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index); |
9cef0d2f | 217 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index); |
29979a71 | 218 | static inline u32 next_command(ctlr_info_t *h); |
a6528d01 SC |
219 | static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev, |
220 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, | |
221 | u64 *cfg_offset); | |
222 | static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev, | |
223 | unsigned long *memory_bar); | |
224 | ||
33079b21 | 225 | |
5e216153 MM |
226 | /* performant mode helper functions */ |
227 | static void calc_bucket_map(int *bucket, int num_buckets, int nsgs, | |
228 | int *bucket_map); | |
229 | static void cciss_put_controller_into_performant_mode(ctlr_info_t *h); | |
230 | ||
1da177e4 | 231 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
232 | static void cciss_procinit(int i); |
233 | #else | |
7c832835 BH |
234 | static void cciss_procinit(int i) |
235 | { | |
236 | } | |
237 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
238 | |
239 | #ifdef CONFIG_COMPAT | |
ef7822c2 AV |
240 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
241 | unsigned, unsigned long); | |
1da177e4 LT |
242 | #endif |
243 | ||
83d5cde4 | 244 | static const struct block_device_operations cciss_fops = { |
7c832835 | 245 | .owner = THIS_MODULE, |
6e9624b8 | 246 | .open = cciss_unlocked_open, |
ef7822c2 | 247 | .release = cciss_release, |
8a6cfeb6 | 248 | .ioctl = do_ioctl, |
7c832835 | 249 | .getgeo = cciss_getgeo, |
1da177e4 | 250 | #ifdef CONFIG_COMPAT |
ef7822c2 | 251 | .compat_ioctl = cciss_compat_ioctl, |
1da177e4 | 252 | #endif |
7c832835 | 253 | .revalidate_disk = cciss_revalidate, |
1da177e4 LT |
254 | }; |
255 | ||
5e216153 MM |
256 | /* set_performant_mode: Modify the tag for cciss performant |
257 | * set bit 0 for pull model, bits 3-1 for block fetch | |
258 | * register number | |
259 | */ | |
260 | static void set_performant_mode(ctlr_info_t *h, CommandList_struct *c) | |
261 | { | |
262 | if (likely(h->transMethod == CFGTBL_Trans_Performant)) | |
263 | c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); | |
264 | } | |
265 | ||
1da177e4 LT |
266 | /* |
267 | * Enqueuing and dequeuing functions for cmdlists. | |
268 | */ | |
8a3173de | 269 | static inline void addQ(struct hlist_head *list, CommandList_struct *c) |
1da177e4 | 270 | { |
8a3173de | 271 | hlist_add_head(&c->list, list); |
1da177e4 LT |
272 | } |
273 | ||
8a3173de | 274 | static inline void removeQ(CommandList_struct *c) |
1da177e4 | 275 | { |
b59e64d0 HR |
276 | /* |
277 | * After kexec/dump some commands might still | |
278 | * be in flight, which the firmware will try | |
279 | * to complete. Resetting the firmware doesn't work | |
280 | * with old fw revisions, so we have to mark | |
281 | * them off as 'stale' to prevent the driver from | |
282 | * falling over. | |
283 | */ | |
284 | if (WARN_ON(hlist_unhashed(&c->list))) { | |
285 | c->cmd_type = CMD_MSG_STALE; | |
8a3173de | 286 | return; |
b59e64d0 | 287 | } |
8a3173de JA |
288 | |
289 | hlist_del_init(&c->list); | |
1da177e4 LT |
290 | } |
291 | ||
664a717d MM |
292 | static void enqueue_cmd_and_start_io(ctlr_info_t *h, |
293 | CommandList_struct *c) | |
294 | { | |
295 | unsigned long flags; | |
5e216153 | 296 | set_performant_mode(h, c); |
664a717d MM |
297 | spin_lock_irqsave(&h->lock, flags); |
298 | addQ(&h->reqQ, c); | |
299 | h->Qdepth++; | |
300 | start_io(h); | |
301 | spin_unlock_irqrestore(&h->lock, flags); | |
302 | } | |
303 | ||
dccc9b56 | 304 | static void cciss_free_sg_chain_blocks(SGDescriptor_struct **cmd_sg_list, |
49fc5601 SC |
305 | int nr_cmds) |
306 | { | |
307 | int i; | |
308 | ||
309 | if (!cmd_sg_list) | |
310 | return; | |
311 | for (i = 0; i < nr_cmds; i++) { | |
dccc9b56 SC |
312 | kfree(cmd_sg_list[i]); |
313 | cmd_sg_list[i] = NULL; | |
49fc5601 SC |
314 | } |
315 | kfree(cmd_sg_list); | |
316 | } | |
317 | ||
dccc9b56 SC |
318 | static SGDescriptor_struct **cciss_allocate_sg_chain_blocks( |
319 | ctlr_info_t *h, int chainsize, int nr_cmds) | |
49fc5601 SC |
320 | { |
321 | int j; | |
dccc9b56 | 322 | SGDescriptor_struct **cmd_sg_list; |
49fc5601 SC |
323 | |
324 | if (chainsize <= 0) | |
325 | return NULL; | |
326 | ||
327 | cmd_sg_list = kmalloc(sizeof(*cmd_sg_list) * nr_cmds, GFP_KERNEL); | |
328 | if (!cmd_sg_list) | |
329 | return NULL; | |
330 | ||
331 | /* Build up chain blocks for each command */ | |
332 | for (j = 0; j < nr_cmds; j++) { | |
49fc5601 | 333 | /* Need a block of chainsized s/g elements. */ |
dccc9b56 SC |
334 | cmd_sg_list[j] = kmalloc((chainsize * |
335 | sizeof(*cmd_sg_list[j])), GFP_KERNEL); | |
336 | if (!cmd_sg_list[j]) { | |
49fc5601 SC |
337 | dev_err(&h->pdev->dev, "Cannot get memory " |
338 | "for s/g chains.\n"); | |
339 | goto clean; | |
340 | } | |
341 | } | |
342 | return cmd_sg_list; | |
343 | clean: | |
344 | cciss_free_sg_chain_blocks(cmd_sg_list, nr_cmds); | |
345 | return NULL; | |
346 | } | |
347 | ||
d45033ef SC |
348 | static void cciss_unmap_sg_chain_block(ctlr_info_t *h, CommandList_struct *c) |
349 | { | |
350 | SGDescriptor_struct *chain_sg; | |
351 | u64bit temp64; | |
352 | ||
353 | if (c->Header.SGTotal <= h->max_cmd_sgentries) | |
354 | return; | |
355 | ||
356 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; | |
357 | temp64.val32.lower = chain_sg->Addr.lower; | |
358 | temp64.val32.upper = chain_sg->Addr.upper; | |
359 | pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); | |
360 | } | |
361 | ||
362 | static void cciss_map_sg_chain_block(ctlr_info_t *h, CommandList_struct *c, | |
363 | SGDescriptor_struct *chain_block, int len) | |
364 | { | |
365 | SGDescriptor_struct *chain_sg; | |
366 | u64bit temp64; | |
367 | ||
368 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; | |
369 | chain_sg->Ext = CCISS_SG_CHAIN; | |
370 | chain_sg->Len = len; | |
371 | temp64.val = pci_map_single(h->pdev, chain_block, len, | |
372 | PCI_DMA_TODEVICE); | |
373 | chain_sg->Addr.lower = temp64.val32.lower; | |
374 | chain_sg->Addr.upper = temp64.val32.upper; | |
375 | } | |
376 | ||
1da177e4 LT |
377 | #include "cciss_scsi.c" /* For SCSI tape support */ |
378 | ||
1e6f2dc1 AB |
379 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
380 | "UNKNOWN" | |
381 | }; | |
382 | #define RAID_UNKNOWN (sizeof(raid_label) / sizeof(raid_label[0])-1) | |
0f5486ec | 383 | |
1da177e4 LT |
384 | #ifdef CONFIG_PROC_FS |
385 | ||
386 | /* | |
387 | * Report information about this controller. | |
388 | */ | |
389 | #define ENG_GIG 1000000000 | |
390 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
89b6e743 | 391 | #define ENGAGE_SCSI "engage scsi" |
1da177e4 LT |
392 | |
393 | static struct proc_dir_entry *proc_cciss; | |
394 | ||
89b6e743 | 395 | static void cciss_seq_show_header(struct seq_file *seq) |
1da177e4 | 396 | { |
89b6e743 MM |
397 | ctlr_info_t *h = seq->private; |
398 | ||
399 | seq_printf(seq, "%s: HP %s Controller\n" | |
400 | "Board ID: 0x%08lx\n" | |
401 | "Firmware Version: %c%c%c%c\n" | |
402 | "IRQ: %d\n" | |
403 | "Logical drives: %d\n" | |
404 | "Current Q depth: %d\n" | |
405 | "Current # commands on controller: %d\n" | |
406 | "Max Q depth since init: %d\n" | |
407 | "Max # commands on controller since init: %d\n" | |
408 | "Max SG entries since init: %d\n", | |
409 | h->devname, | |
410 | h->product_name, | |
411 | (unsigned long)h->board_id, | |
412 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], | |
5e216153 | 413 | h->firm_ver[3], (unsigned int)h->intr[PERF_MODE_INT], |
89b6e743 MM |
414 | h->num_luns, |
415 | h->Qdepth, h->commands_outstanding, | |
416 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
417 | ||
418 | #ifdef CONFIG_CISS_SCSI_TAPE | |
419 | cciss_seq_tape_report(seq, h->ctlr); | |
420 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
421 | } | |
1da177e4 | 422 | |
89b6e743 MM |
423 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
424 | { | |
425 | ctlr_info_t *h = seq->private; | |
426 | unsigned ctlr = h->ctlr; | |
427 | unsigned long flags; | |
1da177e4 LT |
428 | |
429 | /* prevent displaying bogus info during configuration | |
430 | * or deconfiguration of a logical volume | |
431 | */ | |
432 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
433 | if (h->busy_configuring) { | |
434 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
89b6e743 | 435 | return ERR_PTR(-EBUSY); |
1da177e4 LT |
436 | } |
437 | h->busy_configuring = 1; | |
438 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
439 | ||
89b6e743 MM |
440 | if (*pos == 0) |
441 | cciss_seq_show_header(seq); | |
442 | ||
443 | return pos; | |
444 | } | |
445 | ||
446 | static int cciss_seq_show(struct seq_file *seq, void *v) | |
447 | { | |
448 | sector_t vol_sz, vol_sz_frac; | |
449 | ctlr_info_t *h = seq->private; | |
450 | unsigned ctlr = h->ctlr; | |
451 | loff_t *pos = v; | |
9cef0d2f | 452 | drive_info_struct *drv = h->drv[*pos]; |
89b6e743 MM |
453 | |
454 | if (*pos > h->highest_lun) | |
455 | return 0; | |
456 | ||
531c2dc7 SC |
457 | if (drv == NULL) /* it's possible for h->drv[] to have holes. */ |
458 | return 0; | |
459 | ||
89b6e743 MM |
460 | if (drv->heads == 0) |
461 | return 0; | |
462 | ||
463 | vol_sz = drv->nr_blocks; | |
464 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
465 | vol_sz_frac *= 100; | |
466 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
467 | ||
fa52bec9 | 468 | if (drv->raid_level < 0 || drv->raid_level > RAID_UNKNOWN) |
89b6e743 MM |
469 | drv->raid_level = RAID_UNKNOWN; |
470 | seq_printf(seq, "cciss/c%dd%d:" | |
471 | "\t%4u.%02uGB\tRAID %s\n", | |
472 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, | |
473 | raid_label[drv->raid_level]); | |
474 | return 0; | |
475 | } | |
476 | ||
477 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
478 | { | |
479 | ctlr_info_t *h = seq->private; | |
480 | ||
481 | if (*pos > h->highest_lun) | |
482 | return NULL; | |
483 | *pos += 1; | |
484 | ||
485 | return pos; | |
486 | } | |
487 | ||
488 | static void cciss_seq_stop(struct seq_file *seq, void *v) | |
489 | { | |
490 | ctlr_info_t *h = seq->private; | |
491 | ||
492 | /* Only reset h->busy_configuring if we succeeded in setting | |
493 | * it during cciss_seq_start. */ | |
494 | if (v == ERR_PTR(-EBUSY)) | |
495 | return; | |
7c832835 | 496 | |
1da177e4 | 497 | h->busy_configuring = 0; |
1da177e4 LT |
498 | } |
499 | ||
88e9d34c | 500 | static const struct seq_operations cciss_seq_ops = { |
89b6e743 MM |
501 | .start = cciss_seq_start, |
502 | .show = cciss_seq_show, | |
503 | .next = cciss_seq_next, | |
504 | .stop = cciss_seq_stop, | |
505 | }; | |
506 | ||
507 | static int cciss_seq_open(struct inode *inode, struct file *file) | |
508 | { | |
509 | int ret = seq_open(file, &cciss_seq_ops); | |
510 | struct seq_file *seq = file->private_data; | |
511 | ||
512 | if (!ret) | |
513 | seq->private = PDE(inode)->data; | |
514 | ||
515 | return ret; | |
516 | } | |
517 | ||
518 | static ssize_t | |
519 | cciss_proc_write(struct file *file, const char __user *buf, | |
520 | size_t length, loff_t *ppos) | |
1da177e4 | 521 | { |
89b6e743 MM |
522 | int err; |
523 | char *buffer; | |
524 | ||
525 | #ifndef CONFIG_CISS_SCSI_TAPE | |
526 | return -EINVAL; | |
1da177e4 LT |
527 | #endif |
528 | ||
89b6e743 | 529 | if (!buf || length > PAGE_SIZE - 1) |
7c832835 | 530 | return -EINVAL; |
89b6e743 MM |
531 | |
532 | buffer = (char *)__get_free_page(GFP_KERNEL); | |
533 | if (!buffer) | |
534 | return -ENOMEM; | |
535 | ||
536 | err = -EFAULT; | |
537 | if (copy_from_user(buffer, buf, length)) | |
538 | goto out; | |
539 | buffer[length] = '\0'; | |
540 | ||
541 | #ifdef CONFIG_CISS_SCSI_TAPE | |
542 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { | |
543 | struct seq_file *seq = file->private_data; | |
544 | ctlr_info_t *h = seq->private; | |
89b6e743 | 545 | |
8721c81f SC |
546 | err = cciss_engage_scsi(h->ctlr); |
547 | if (err == 0) | |
89b6e743 MM |
548 | err = length; |
549 | } else | |
550 | #endif /* CONFIG_CISS_SCSI_TAPE */ | |
551 | err = -EINVAL; | |
7c832835 BH |
552 | /* might be nice to have "disengage" too, but it's not |
553 | safely possible. (only 1 module use count, lock issues.) */ | |
89b6e743 MM |
554 | |
555 | out: | |
556 | free_page((unsigned long)buffer); | |
557 | return err; | |
1da177e4 LT |
558 | } |
559 | ||
828c0950 | 560 | static const struct file_operations cciss_proc_fops = { |
89b6e743 MM |
561 | .owner = THIS_MODULE, |
562 | .open = cciss_seq_open, | |
563 | .read = seq_read, | |
564 | .llseek = seq_lseek, | |
565 | .release = seq_release, | |
566 | .write = cciss_proc_write, | |
567 | }; | |
568 | ||
1da177e4 LT |
569 | static void __devinit cciss_procinit(int i) |
570 | { | |
571 | struct proc_dir_entry *pde; | |
572 | ||
89b6e743 | 573 | if (proc_cciss == NULL) |
928b4d8c | 574 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
89b6e743 MM |
575 | if (!proc_cciss) |
576 | return; | |
3dfcf9c4 | 577 | pde = proc_create_data(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
89b6e743 | 578 | S_IROTH, proc_cciss, |
3dfcf9c4 | 579 | &cciss_proc_fops, hba[i]); |
1da177e4 | 580 | } |
7c832835 | 581 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 582 | |
7fe06326 AP |
583 | #define MAX_PRODUCT_NAME_LEN 19 |
584 | ||
585 | #define to_hba(n) container_of(n, struct ctlr_info, dev) | |
586 | #define to_drv(n) container_of(n, drive_info_struct, dev) | |
587 | ||
d6f4965d AP |
588 | static ssize_t host_store_rescan(struct device *dev, |
589 | struct device_attribute *attr, | |
590 | const char *buf, size_t count) | |
591 | { | |
592 | struct ctlr_info *h = to_hba(dev); | |
593 | ||
594 | add_to_scan_list(h); | |
595 | wake_up_process(cciss_scan_thread); | |
596 | wait_for_completion_interruptible(&h->scan_wait); | |
597 | ||
598 | return count; | |
599 | } | |
8ba95c69 | 600 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); |
7fe06326 AP |
601 | |
602 | static ssize_t dev_show_unique_id(struct device *dev, | |
603 | struct device_attribute *attr, | |
604 | char *buf) | |
605 | { | |
606 | drive_info_struct *drv = to_drv(dev); | |
607 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
608 | __u8 sn[16]; | |
609 | unsigned long flags; | |
610 | int ret = 0; | |
611 | ||
612 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
613 | if (h->busy_configuring) | |
614 | ret = -EBUSY; | |
615 | else | |
616 | memcpy(sn, drv->serial_no, sizeof(sn)); | |
617 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
618 | ||
619 | if (ret) | |
620 | return ret; | |
621 | else | |
622 | return snprintf(buf, 16 * 2 + 2, | |
623 | "%02X%02X%02X%02X%02X%02X%02X%02X" | |
624 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", | |
625 | sn[0], sn[1], sn[2], sn[3], | |
626 | sn[4], sn[5], sn[6], sn[7], | |
627 | sn[8], sn[9], sn[10], sn[11], | |
628 | sn[12], sn[13], sn[14], sn[15]); | |
629 | } | |
8ba95c69 | 630 | static DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); |
7fe06326 AP |
631 | |
632 | static ssize_t dev_show_vendor(struct device *dev, | |
633 | struct device_attribute *attr, | |
634 | char *buf) | |
635 | { | |
636 | drive_info_struct *drv = to_drv(dev); | |
637 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
638 | char vendor[VENDOR_LEN + 1]; | |
639 | unsigned long flags; | |
640 | int ret = 0; | |
641 | ||
642 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
643 | if (h->busy_configuring) | |
644 | ret = -EBUSY; | |
645 | else | |
646 | memcpy(vendor, drv->vendor, VENDOR_LEN + 1); | |
647 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
648 | ||
649 | if (ret) | |
650 | return ret; | |
651 | else | |
652 | return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); | |
653 | } | |
8ba95c69 | 654 | static DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); |
7fe06326 AP |
655 | |
656 | static ssize_t dev_show_model(struct device *dev, | |
657 | struct device_attribute *attr, | |
658 | char *buf) | |
659 | { | |
660 | drive_info_struct *drv = to_drv(dev); | |
661 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
662 | char model[MODEL_LEN + 1]; | |
663 | unsigned long flags; | |
664 | int ret = 0; | |
665 | ||
666 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
667 | if (h->busy_configuring) | |
668 | ret = -EBUSY; | |
669 | else | |
670 | memcpy(model, drv->model, MODEL_LEN + 1); | |
671 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
672 | ||
673 | if (ret) | |
674 | return ret; | |
675 | else | |
676 | return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); | |
677 | } | |
8ba95c69 | 678 | static DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); |
7fe06326 AP |
679 | |
680 | static ssize_t dev_show_rev(struct device *dev, | |
681 | struct device_attribute *attr, | |
682 | char *buf) | |
683 | { | |
684 | drive_info_struct *drv = to_drv(dev); | |
685 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
686 | char rev[REV_LEN + 1]; | |
687 | unsigned long flags; | |
688 | int ret = 0; | |
689 | ||
690 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
691 | if (h->busy_configuring) | |
692 | ret = -EBUSY; | |
693 | else | |
694 | memcpy(rev, drv->rev, REV_LEN + 1); | |
695 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
696 | ||
697 | if (ret) | |
698 | return ret; | |
699 | else | |
700 | return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); | |
701 | } | |
8ba95c69 | 702 | static DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); |
7fe06326 | 703 | |
ce84a8ae SC |
704 | static ssize_t cciss_show_lunid(struct device *dev, |
705 | struct device_attribute *attr, char *buf) | |
706 | { | |
9cef0d2f SC |
707 | drive_info_struct *drv = to_drv(dev); |
708 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
ce84a8ae SC |
709 | unsigned long flags; |
710 | unsigned char lunid[8]; | |
711 | ||
712 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
713 | if (h->busy_configuring) { | |
714 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
715 | return -EBUSY; | |
716 | } | |
717 | if (!drv->heads) { | |
718 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
719 | return -ENOTTY; | |
720 | } | |
721 | memcpy(lunid, drv->LunID, sizeof(lunid)); | |
722 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
723 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", | |
724 | lunid[0], lunid[1], lunid[2], lunid[3], | |
725 | lunid[4], lunid[5], lunid[6], lunid[7]); | |
726 | } | |
8ba95c69 | 727 | static DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL); |
ce84a8ae | 728 | |
3ff1111d SC |
729 | static ssize_t cciss_show_raid_level(struct device *dev, |
730 | struct device_attribute *attr, char *buf) | |
731 | { | |
9cef0d2f SC |
732 | drive_info_struct *drv = to_drv(dev); |
733 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
3ff1111d SC |
734 | int raid; |
735 | unsigned long flags; | |
736 | ||
737 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
738 | if (h->busy_configuring) { | |
739 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
740 | return -EBUSY; | |
741 | } | |
742 | raid = drv->raid_level; | |
743 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
744 | if (raid < 0 || raid > RAID_UNKNOWN) | |
745 | raid = RAID_UNKNOWN; | |
746 | ||
747 | return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n", | |
748 | raid_label[raid]); | |
749 | } | |
8ba95c69 | 750 | static DEVICE_ATTR(raid_level, S_IRUGO, cciss_show_raid_level, NULL); |
3ff1111d | 751 | |
e272afec SC |
752 | static ssize_t cciss_show_usage_count(struct device *dev, |
753 | struct device_attribute *attr, char *buf) | |
754 | { | |
9cef0d2f SC |
755 | drive_info_struct *drv = to_drv(dev); |
756 | struct ctlr_info *h = to_hba(drv->dev.parent); | |
e272afec SC |
757 | unsigned long flags; |
758 | int count; | |
759 | ||
760 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
761 | if (h->busy_configuring) { | |
762 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
763 | return -EBUSY; | |
764 | } | |
765 | count = drv->usage_count; | |
766 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
767 | return snprintf(buf, 20, "%d\n", count); | |
768 | } | |
8ba95c69 | 769 | static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL); |
e272afec | 770 | |
d6f4965d AP |
771 | static struct attribute *cciss_host_attrs[] = { |
772 | &dev_attr_rescan.attr, | |
773 | NULL | |
774 | }; | |
775 | ||
776 | static struct attribute_group cciss_host_attr_group = { | |
777 | .attrs = cciss_host_attrs, | |
778 | }; | |
779 | ||
9f792d9f | 780 | static const struct attribute_group *cciss_host_attr_groups[] = { |
d6f4965d AP |
781 | &cciss_host_attr_group, |
782 | NULL | |
783 | }; | |
784 | ||
785 | static struct device_type cciss_host_type = { | |
786 | .name = "cciss_host", | |
787 | .groups = cciss_host_attr_groups, | |
617e1344 | 788 | .release = cciss_hba_release, |
d6f4965d AP |
789 | }; |
790 | ||
7fe06326 AP |
791 | static struct attribute *cciss_dev_attrs[] = { |
792 | &dev_attr_unique_id.attr, | |
793 | &dev_attr_model.attr, | |
794 | &dev_attr_vendor.attr, | |
795 | &dev_attr_rev.attr, | |
ce84a8ae | 796 | &dev_attr_lunid.attr, |
3ff1111d | 797 | &dev_attr_raid_level.attr, |
e272afec | 798 | &dev_attr_usage_count.attr, |
7fe06326 AP |
799 | NULL |
800 | }; | |
801 | ||
802 | static struct attribute_group cciss_dev_attr_group = { | |
803 | .attrs = cciss_dev_attrs, | |
804 | }; | |
805 | ||
a4dbd674 | 806 | static const struct attribute_group *cciss_dev_attr_groups[] = { |
7fe06326 AP |
807 | &cciss_dev_attr_group, |
808 | NULL | |
809 | }; | |
810 | ||
811 | static struct device_type cciss_dev_type = { | |
812 | .name = "cciss_device", | |
813 | .groups = cciss_dev_attr_groups, | |
617e1344 | 814 | .release = cciss_device_release, |
7fe06326 AP |
815 | }; |
816 | ||
817 | static struct bus_type cciss_bus_type = { | |
818 | .name = "cciss", | |
819 | }; | |
820 | ||
617e1344 SC |
821 | /* |
822 | * cciss_hba_release is called when the reference count | |
823 | * of h->dev goes to zero. | |
824 | */ | |
825 | static void cciss_hba_release(struct device *dev) | |
826 | { | |
827 | /* | |
828 | * nothing to do, but need this to avoid a warning | |
829 | * about not having a release handler from lib/kref.c. | |
830 | */ | |
831 | } | |
7fe06326 AP |
832 | |
833 | /* | |
834 | * Initialize sysfs entry for each controller. This sets up and registers | |
835 | * the 'cciss#' directory for each individual controller under | |
836 | * /sys/bus/pci/devices/<dev>/. | |
837 | */ | |
838 | static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) | |
839 | { | |
840 | device_initialize(&h->dev); | |
841 | h->dev.type = &cciss_host_type; | |
842 | h->dev.bus = &cciss_bus_type; | |
843 | dev_set_name(&h->dev, "%s", h->devname); | |
844 | h->dev.parent = &h->pdev->dev; | |
845 | ||
846 | return device_add(&h->dev); | |
847 | } | |
848 | ||
849 | /* | |
850 | * Remove sysfs entries for an hba. | |
851 | */ | |
852 | static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) | |
853 | { | |
854 | device_del(&h->dev); | |
617e1344 SC |
855 | put_device(&h->dev); /* final put. */ |
856 | } | |
857 | ||
858 | /* cciss_device_release is called when the reference count | |
9cef0d2f | 859 | * of h->drv[x]dev goes to zero. |
617e1344 SC |
860 | */ |
861 | static void cciss_device_release(struct device *dev) | |
862 | { | |
9cef0d2f SC |
863 | drive_info_struct *drv = to_drv(dev); |
864 | kfree(drv); | |
7fe06326 AP |
865 | } |
866 | ||
867 | /* | |
868 | * Initialize sysfs for each logical drive. This sets up and registers | |
869 | * the 'c#d#' directory for each individual logical drive under | |
870 | * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from | |
871 | * /sys/block/cciss!c#d# to this entry. | |
872 | */ | |
617e1344 | 873 | static long cciss_create_ld_sysfs_entry(struct ctlr_info *h, |
7fe06326 AP |
874 | int drv_index) |
875 | { | |
617e1344 SC |
876 | struct device *dev; |
877 | ||
9cef0d2f | 878 | if (h->drv[drv_index]->device_initialized) |
8ce51966 SC |
879 | return 0; |
880 | ||
9cef0d2f | 881 | dev = &h->drv[drv_index]->dev; |
617e1344 SC |
882 | device_initialize(dev); |
883 | dev->type = &cciss_dev_type; | |
884 | dev->bus = &cciss_bus_type; | |
885 | dev_set_name(dev, "c%dd%d", h->ctlr, drv_index); | |
886 | dev->parent = &h->dev; | |
9cef0d2f | 887 | h->drv[drv_index]->device_initialized = 1; |
617e1344 | 888 | return device_add(dev); |
7fe06326 AP |
889 | } |
890 | ||
891 | /* | |
892 | * Remove sysfs entries for a logical drive. | |
893 | */ | |
8ce51966 SC |
894 | static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index, |
895 | int ctlr_exiting) | |
7fe06326 | 896 | { |
9cef0d2f | 897 | struct device *dev = &h->drv[drv_index]->dev; |
8ce51966 SC |
898 | |
899 | /* special case for c*d0, we only destroy it on controller exit */ | |
900 | if (drv_index == 0 && !ctlr_exiting) | |
901 | return; | |
902 | ||
617e1344 SC |
903 | device_del(dev); |
904 | put_device(dev); /* the "final" put. */ | |
9cef0d2f | 905 | h->drv[drv_index] = NULL; |
7fe06326 AP |
906 | } |
907 | ||
7c832835 BH |
908 | /* |
909 | * For operations that cannot sleep, a command block is allocated at init, | |
1da177e4 | 910 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
7c832835 BH |
911 | * which ones are free or in use. For operations that can wait for kmalloc |
912 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
913 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
914 | */ | |
915 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
1da177e4 LT |
916 | { |
917 | CommandList_struct *c; | |
7c832835 | 918 | int i; |
1da177e4 LT |
919 | u64bit temp64; |
920 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
921 | ||
7c832835 BH |
922 | if (!get_from_pool) { |
923 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, | |
924 | sizeof(CommandList_struct), &cmd_dma_handle); | |
925 | if (c == NULL) | |
926 | return NULL; | |
1da177e4 LT |
927 | memset(c, 0, sizeof(CommandList_struct)); |
928 | ||
33079b21 MM |
929 | c->cmdindex = -1; |
930 | ||
7c832835 BH |
931 | c->err_info = (ErrorInfo_struct *) |
932 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
933 | &err_dma_handle); | |
934 | ||
935 | if (c->err_info == NULL) { | |
936 | pci_free_consistent(h->pdev, | |
1da177e4 LT |
937 | sizeof(CommandList_struct), c, cmd_dma_handle); |
938 | return NULL; | |
939 | } | |
940 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
941 | } else { /* get it out of the controllers pool */ |
942 | ||
943 | do { | |
f880632f MM |
944 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
945 | if (i == h->nr_cmds) | |
7c832835 BH |
946 | return NULL; |
947 | } while (test_and_set_bit | |
948 | (i & (BITS_PER_LONG - 1), | |
949 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); | |
1da177e4 LT |
950 | #ifdef CCISS_DEBUG |
951 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
952 | #endif | |
7c832835 | 953 | c = h->cmd_pool + i; |
1da177e4 | 954 | memset(c, 0, sizeof(CommandList_struct)); |
7c832835 BH |
955 | cmd_dma_handle = h->cmd_pool_dhandle |
956 | + i * sizeof(CommandList_struct); | |
1da177e4 LT |
957 | c->err_info = h->errinfo_pool + i; |
958 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
7c832835 BH |
959 | err_dma_handle = h->errinfo_pool_dhandle |
960 | + i * sizeof(ErrorInfo_struct); | |
961 | h->nr_allocs++; | |
33079b21 MM |
962 | |
963 | c->cmdindex = i; | |
7c832835 | 964 | } |
1da177e4 | 965 | |
8a3173de | 966 | INIT_HLIST_NODE(&c->list); |
1da177e4 | 967 | c->busaddr = (__u32) cmd_dma_handle; |
7c832835 | 968 | temp64.val = (__u64) err_dma_handle; |
1da177e4 LT |
969 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
970 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
971 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
1da177e4 | 972 | |
7c832835 BH |
973 | c->ctlr = h->ctlr; |
974 | return c; | |
1da177e4 LT |
975 | } |
976 | ||
7c832835 BH |
977 | /* |
978 | * Frees a command block that was previously allocated with cmd_alloc(). | |
1da177e4 LT |
979 | */ |
980 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
981 | { | |
982 | int i; | |
983 | u64bit temp64; | |
984 | ||
7c832835 | 985 | if (!got_from_pool) { |
1da177e4 LT |
986 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
987 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
7c832835 BH |
988 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
989 | c->err_info, (dma_addr_t) temp64.val); | |
990 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
991 | c, (dma_addr_t) c->busaddr); | |
992 | } else { | |
1da177e4 | 993 | i = c - h->cmd_pool; |
7c832835 BH |
994 | clear_bit(i & (BITS_PER_LONG - 1), |
995 | h->cmd_pool_bits + (i / BITS_PER_LONG)); | |
996 | h->nr_frees++; | |
997 | } | |
1da177e4 LT |
998 | } |
999 | ||
1000 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
1001 | { | |
7c832835 | 1002 | return disk->queue->queuedata; |
1da177e4 LT |
1003 | } |
1004 | ||
1005 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
1006 | { | |
1007 | return disk->private_data; | |
1008 | } | |
1009 | ||
1010 | /* | |
1011 | * Open. Make sure the device is really there. | |
1012 | */ | |
ef7822c2 | 1013 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
1da177e4 | 1014 | { |
ef7822c2 AV |
1015 | ctlr_info_t *host = get_host(bdev->bd_disk); |
1016 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1da177e4 LT |
1017 | |
1018 | #ifdef CCISS_DEBUG | |
ef7822c2 | 1019 | printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name); |
7c832835 | 1020 | #endif /* CCISS_DEBUG */ |
1da177e4 | 1021 | |
2e043986 | 1022 | if (drv->busy_configuring) |
ddd47442 | 1023 | return -EBUSY; |
1da177e4 LT |
1024 | /* |
1025 | * Root is allowed to open raw volume zero even if it's not configured | |
1026 | * so array config can still work. Root is also allowed to open any | |
1027 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
1028 | * disk information. I don't think I really like this | |
1029 | * but I'm already using way to many device nodes to claim another one | |
1030 | * for "raw controller". | |
1031 | */ | |
7a06f789 | 1032 | if (drv->heads == 0) { |
ef7822c2 | 1033 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
1da177e4 | 1034 | /* if not node 0 make sure it is a partition = 0 */ |
ef7822c2 | 1035 | if (MINOR(bdev->bd_dev) & 0x0f) { |
7c832835 | 1036 | return -ENXIO; |
1da177e4 | 1037 | /* if it is, make sure we have a LUN ID */ |
39ccf9a6 SC |
1038 | } else if (memcmp(drv->LunID, CTLR_LUNID, |
1039 | sizeof(drv->LunID))) { | |
1da177e4 LT |
1040 | return -ENXIO; |
1041 | } | |
1042 | } | |
1043 | if (!capable(CAP_SYS_ADMIN)) | |
1044 | return -EPERM; | |
1045 | } | |
1046 | drv->usage_count++; | |
1047 | host->usage_count++; | |
1048 | return 0; | |
1049 | } | |
7c832835 | 1050 | |
6e9624b8 AB |
1051 | static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode) |
1052 | { | |
1053 | int ret; | |
1054 | ||
1055 | lock_kernel(); | |
1056 | ret = cciss_open(bdev, mode); | |
1057 | unlock_kernel(); | |
1058 | ||
1059 | return ret; | |
1060 | } | |
1061 | ||
1da177e4 LT |
1062 | /* |
1063 | * Close. Sync first. | |
1064 | */ | |
ef7822c2 | 1065 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
1da177e4 | 1066 | { |
6e9624b8 AB |
1067 | ctlr_info_t *host; |
1068 | drive_info_struct *drv; | |
1069 | ||
1070 | lock_kernel(); | |
1071 | host = get_host(disk); | |
1072 | drv = get_drv(disk); | |
1da177e4 LT |
1073 | |
1074 | #ifdef CCISS_DEBUG | |
ef7822c2 | 1075 | printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name); |
7c832835 | 1076 | #endif /* CCISS_DEBUG */ |
1da177e4 LT |
1077 | |
1078 | drv->usage_count--; | |
1079 | host->usage_count--; | |
6e9624b8 | 1080 | unlock_kernel(); |
1da177e4 LT |
1081 | return 0; |
1082 | } | |
1083 | ||
ef7822c2 AV |
1084 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
1085 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1086 | { |
1087 | int ret; | |
1088 | lock_kernel(); | |
ef7822c2 | 1089 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
1090 | unlock_kernel(); |
1091 | return ret; | |
1092 | } | |
1093 | ||
8a6cfeb6 AB |
1094 | #ifdef CONFIG_COMPAT |
1095 | ||
ef7822c2 AV |
1096 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
1097 | unsigned cmd, unsigned long arg); | |
1098 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, | |
1099 | unsigned cmd, unsigned long arg); | |
1da177e4 | 1100 | |
ef7822c2 AV |
1101 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
1102 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1103 | { |
1104 | switch (cmd) { | |
1105 | case CCISS_GETPCIINFO: | |
1106 | case CCISS_GETINTINFO: | |
1107 | case CCISS_SETINTINFO: | |
1108 | case CCISS_GETNODENAME: | |
1109 | case CCISS_SETNODENAME: | |
1110 | case CCISS_GETHEARTBEAT: | |
1111 | case CCISS_GETBUSTYPES: | |
1112 | case CCISS_GETFIRMVER: | |
1113 | case CCISS_GETDRIVVER: | |
1114 | case CCISS_REVALIDVOLS: | |
1115 | case CCISS_DEREGDISK: | |
1116 | case CCISS_REGNEWDISK: | |
1117 | case CCISS_REGNEWD: | |
1118 | case CCISS_RESCANDISK: | |
1119 | case CCISS_GETLUNINFO: | |
ef7822c2 | 1120 | return do_ioctl(bdev, mode, cmd, arg); |
1da177e4 LT |
1121 | |
1122 | case CCISS_PASSTHRU32: | |
ef7822c2 | 1123 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
1da177e4 | 1124 | case CCISS_BIG_PASSTHRU32: |
ef7822c2 | 1125 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
1da177e4 LT |
1126 | |
1127 | default: | |
1128 | return -ENOIOCTLCMD; | |
1129 | } | |
1130 | } | |
1131 | ||
ef7822c2 AV |
1132 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
1133 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1134 | { |
1135 | IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 1136 | (IOCTL32_Command_struct __user *) arg; |
1da177e4 LT |
1137 | IOCTL_Command_struct arg64; |
1138 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
1139 | int err; | |
1140 | u32 cp; | |
1141 | ||
1142 | err = 0; | |
7c832835 BH |
1143 | err |= |
1144 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1145 | sizeof(arg64.LUN_info)); | |
1146 | err |= | |
1147 | copy_from_user(&arg64.Request, &arg32->Request, | |
1148 | sizeof(arg64.Request)); | |
1149 | err |= | |
1150 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1151 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1152 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1153 | err |= get_user(cp, &arg32->buf); | |
1154 | arg64.buf = compat_ptr(cp); | |
1155 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1156 | ||
1157 | if (err) | |
1158 | return -EFAULT; | |
1159 | ||
ef7822c2 | 1160 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1161 | if (err) |
1162 | return err; | |
7c832835 BH |
1163 | err |= |
1164 | copy_in_user(&arg32->error_info, &p->error_info, | |
1165 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1166 | if (err) |
1167 | return -EFAULT; | |
1168 | return err; | |
1169 | } | |
1170 | ||
ef7822c2 AV |
1171 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
1172 | unsigned cmd, unsigned long arg) | |
1da177e4 LT |
1173 | { |
1174 | BIG_IOCTL32_Command_struct __user *arg32 = | |
7c832835 | 1175 | (BIG_IOCTL32_Command_struct __user *) arg; |
1da177e4 | 1176 | BIG_IOCTL_Command_struct arg64; |
7c832835 BH |
1177 | BIG_IOCTL_Command_struct __user *p = |
1178 | compat_alloc_user_space(sizeof(arg64)); | |
1da177e4 LT |
1179 | int err; |
1180 | u32 cp; | |
1181 | ||
1182 | err = 0; | |
7c832835 BH |
1183 | err |= |
1184 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, | |
1185 | sizeof(arg64.LUN_info)); | |
1186 | err |= | |
1187 | copy_from_user(&arg64.Request, &arg32->Request, | |
1188 | sizeof(arg64.Request)); | |
1189 | err |= | |
1190 | copy_from_user(&arg64.error_info, &arg32->error_info, | |
1191 | sizeof(arg64.error_info)); | |
1da177e4 LT |
1192 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
1193 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
1194 | err |= get_user(cp, &arg32->buf); | |
1195 | arg64.buf = compat_ptr(cp); | |
1196 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
1197 | ||
1198 | if (err) | |
7c832835 | 1199 | return -EFAULT; |
1da177e4 | 1200 | |
ef7822c2 | 1201 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
1da177e4 LT |
1202 | if (err) |
1203 | return err; | |
7c832835 BH |
1204 | err |= |
1205 | copy_in_user(&arg32->error_info, &p->error_info, | |
1206 | sizeof(arg32->error_info)); | |
1da177e4 LT |
1207 | if (err) |
1208 | return -EFAULT; | |
1209 | return err; | |
1210 | } | |
1211 | #endif | |
a885c8c4 CH |
1212 | |
1213 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) | |
1214 | { | |
1215 | drive_info_struct *drv = get_drv(bdev->bd_disk); | |
1216 | ||
1217 | if (!drv->cylinders) | |
1218 | return -ENXIO; | |
1219 | ||
1220 | geo->heads = drv->heads; | |
1221 | geo->sectors = drv->sectors; | |
1222 | geo->cylinders = drv->cylinders; | |
1223 | return 0; | |
1224 | } | |
1225 | ||
0a9279cc MM |
1226 | static void check_ioctl_unit_attention(ctlr_info_t *host, CommandList_struct *c) |
1227 | { | |
1228 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && | |
1229 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) | |
1230 | (void)check_for_unit_attention(host, c); | |
1231 | } | |
1da177e4 | 1232 | /* |
7c832835 | 1233 | * ioctl |
1da177e4 | 1234 | */ |
ef7822c2 | 1235 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
7c832835 | 1236 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1237 | { |
1da177e4 LT |
1238 | struct gendisk *disk = bdev->bd_disk; |
1239 | ctlr_info_t *host = get_host(disk); | |
1240 | drive_info_struct *drv = get_drv(disk); | |
1241 | int ctlr = host->ctlr; | |
1242 | void __user *argp = (void __user *)arg; | |
1243 | ||
1244 | #ifdef CCISS_DEBUG | |
1245 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
7c832835 BH |
1246 | #endif /* CCISS_DEBUG */ |
1247 | ||
1248 | switch (cmd) { | |
1da177e4 | 1249 | case CCISS_GETPCIINFO: |
7c832835 BH |
1250 | { |
1251 | cciss_pci_info_struct pciinfo; | |
1252 | ||
1253 | if (!arg) | |
1254 | return -EINVAL; | |
1255 | pciinfo.domain = pci_domain_nr(host->pdev->bus); | |
1256 | pciinfo.bus = host->pdev->bus->number; | |
1257 | pciinfo.dev_fn = host->pdev->devfn; | |
1258 | pciinfo.board_id = host->board_id; | |
1259 | if (copy_to_user | |
1260 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) | |
1261 | return -EFAULT; | |
1262 | return 0; | |
1263 | } | |
1da177e4 | 1264 | case CCISS_GETINTINFO: |
7c832835 BH |
1265 | { |
1266 | cciss_coalint_struct intinfo; | |
1267 | if (!arg) | |
1268 | return -EINVAL; | |
1269 | intinfo.delay = | |
1270 | readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
1271 | intinfo.count = | |
1272 | readl(&host->cfgtable->HostWrite.CoalIntCount); | |
1273 | if (copy_to_user | |
1274 | (argp, &intinfo, sizeof(cciss_coalint_struct))) | |
1275 | return -EFAULT; | |
1276 | return 0; | |
1277 | } | |
1da177e4 | 1278 | case CCISS_SETINTINFO: |
1da177e4 | 1279 | { |
7c832835 BH |
1280 | cciss_coalint_struct intinfo; |
1281 | unsigned long flags; | |
1282 | int i; | |
1283 | ||
1284 | if (!arg) | |
1285 | return -EINVAL; | |
1286 | if (!capable(CAP_SYS_ADMIN)) | |
1287 | return -EPERM; | |
1288 | if (copy_from_user | |
1289 | (&intinfo, argp, sizeof(cciss_coalint_struct))) | |
1290 | return -EFAULT; | |
1291 | if ((intinfo.delay == 0) && (intinfo.count == 0)) | |
1292 | { | |
1293 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
1294 | return -EINVAL; | |
1295 | } | |
1296 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1297 | /* Update the field, and then ring the doorbell */ | |
1298 | writel(intinfo.delay, | |
1299 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
1300 | writel(intinfo.count, | |
1301 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
1302 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
1303 | ||
1304 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1305 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
1306 | & CFGTBL_ChangeReq)) | |
1307 | break; | |
1308 | /* delay and try again */ | |
1309 | udelay(1000); | |
1310 | } | |
1311 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1312 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1313 | return -EAGAIN; | |
1314 | return 0; | |
1da177e4 | 1315 | } |
1da177e4 | 1316 | case CCISS_GETNODENAME: |
7c832835 BH |
1317 | { |
1318 | NodeName_type NodeName; | |
1319 | int i; | |
1320 | ||
1321 | if (!arg) | |
1322 | return -EINVAL; | |
1323 | for (i = 0; i < 16; i++) | |
1324 | NodeName[i] = | |
1325 | readb(&host->cfgtable->ServerName[i]); | |
1326 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) | |
1327 | return -EFAULT; | |
1328 | return 0; | |
1329 | } | |
1da177e4 | 1330 | case CCISS_SETNODENAME: |
7c832835 BH |
1331 | { |
1332 | NodeName_type NodeName; | |
1333 | unsigned long flags; | |
1334 | int i; | |
1335 | ||
1336 | if (!arg) | |
1337 | return -EINVAL; | |
1338 | if (!capable(CAP_SYS_ADMIN)) | |
1339 | return -EPERM; | |
1340 | ||
1341 | if (copy_from_user | |
1342 | (NodeName, argp, sizeof(NodeName_type))) | |
1343 | return -EFAULT; | |
1344 | ||
1345 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1346 | ||
1347 | /* Update the field, and then ring the doorbell */ | |
1348 | for (i = 0; i < 16; i++) | |
1349 | writeb(NodeName[i], | |
1350 | &host->cfgtable->ServerName[i]); | |
1351 | ||
1352 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
1353 | ||
1354 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { | |
1355 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
1356 | & CFGTBL_ChangeReq)) | |
1357 | break; | |
1358 | /* delay and try again */ | |
1359 | udelay(1000); | |
1360 | } | |
1361 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1362 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
1363 | return -EAGAIN; | |
1364 | return 0; | |
1365 | } | |
1da177e4 LT |
1366 | |
1367 | case CCISS_GETHEARTBEAT: | |
7c832835 BH |
1368 | { |
1369 | Heartbeat_type heartbeat; | |
1370 | ||
1371 | if (!arg) | |
1372 | return -EINVAL; | |
1373 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
1374 | if (copy_to_user | |
1375 | (argp, &heartbeat, sizeof(Heartbeat_type))) | |
1376 | return -EFAULT; | |
1377 | return 0; | |
1378 | } | |
1da177e4 | 1379 | case CCISS_GETBUSTYPES: |
7c832835 BH |
1380 | { |
1381 | BusTypes_type BusTypes; | |
1382 | ||
1383 | if (!arg) | |
1384 | return -EINVAL; | |
1385 | BusTypes = readl(&host->cfgtable->BusTypes); | |
1386 | if (copy_to_user | |
1387 | (argp, &BusTypes, sizeof(BusTypes_type))) | |
1388 | return -EFAULT; | |
1389 | return 0; | |
1390 | } | |
1da177e4 | 1391 | case CCISS_GETFIRMVER: |
7c832835 BH |
1392 | { |
1393 | FirmwareVer_type firmware; | |
1da177e4 | 1394 | |
7c832835 BH |
1395 | if (!arg) |
1396 | return -EINVAL; | |
1397 | memcpy(firmware, host->firm_ver, 4); | |
1da177e4 | 1398 | |
7c832835 BH |
1399 | if (copy_to_user |
1400 | (argp, firmware, sizeof(FirmwareVer_type))) | |
1401 | return -EFAULT; | |
1402 | return 0; | |
1403 | } | |
1404 | case CCISS_GETDRIVVER: | |
1405 | { | |
1406 | DriverVer_type DriverVer = DRIVER_VERSION; | |
1da177e4 | 1407 | |
7c832835 BH |
1408 | if (!arg) |
1409 | return -EINVAL; | |
1da177e4 | 1410 | |
7c832835 BH |
1411 | if (copy_to_user |
1412 | (argp, &DriverVer, sizeof(DriverVer_type))) | |
1413 | return -EFAULT; | |
1414 | return 0; | |
1415 | } | |
1da177e4 | 1416 | |
6ae5ce8e MM |
1417 | case CCISS_DEREGDISK: |
1418 | case CCISS_REGNEWD: | |
1da177e4 | 1419 | case CCISS_REVALIDVOLS: |
2d11d993 | 1420 | return rebuild_lun_table(host, 0, 1); |
7c832835 BH |
1421 | |
1422 | case CCISS_GETLUNINFO:{ | |
1423 | LogvolInfo_struct luninfo; | |
1424 | ||
39ccf9a6 SC |
1425 | memcpy(&luninfo.LunID, drv->LunID, |
1426 | sizeof(luninfo.LunID)); | |
7c832835 BH |
1427 | luninfo.num_opens = drv->usage_count; |
1428 | luninfo.num_parts = 0; | |
1429 | if (copy_to_user(argp, &luninfo, | |
1430 | sizeof(LogvolInfo_struct))) | |
1431 | return -EFAULT; | |
1432 | return 0; | |
1433 | } | |
1da177e4 | 1434 | case CCISS_PASSTHRU: |
1da177e4 | 1435 | { |
7c832835 BH |
1436 | IOCTL_Command_struct iocommand; |
1437 | CommandList_struct *c; | |
1438 | char *buff = NULL; | |
1439 | u64bit temp64; | |
6e9a4738 | 1440 | DECLARE_COMPLETION_ONSTACK(wait); |
1da177e4 | 1441 | |
7c832835 BH |
1442 | if (!arg) |
1443 | return -EINVAL; | |
1da177e4 | 1444 | |
7c832835 BH |
1445 | if (!capable(CAP_SYS_RAWIO)) |
1446 | return -EPERM; | |
1da177e4 | 1447 | |
7c832835 BH |
1448 | if (copy_from_user |
1449 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) | |
1450 | return -EFAULT; | |
1451 | if ((iocommand.buf_size < 1) && | |
1452 | (iocommand.Request.Type.Direction != XFER_NONE)) { | |
1453 | return -EINVAL; | |
1454 | } | |
1455 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
1456 | /* Check kmalloc limits */ | |
1457 | if (iocommand.buf_size > 128000) | |
1458 | return -EINVAL; | |
1459 | #endif | |
1460 | if (iocommand.buf_size > 0) { | |
1461 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
1462 | if (buff == NULL) | |
1463 | return -EFAULT; | |
1464 | } | |
1465 | if (iocommand.Request.Type.Direction == XFER_WRITE) { | |
1466 | /* Copy the data into the buffer we created */ | |
1467 | if (copy_from_user | |
1468 | (buff, iocommand.buf, iocommand.buf_size)) { | |
1469 | kfree(buff); | |
1470 | return -EFAULT; | |
1471 | } | |
1472 | } else { | |
1473 | memset(buff, 0, iocommand.buf_size); | |
1474 | } | |
1475 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1476 | kfree(buff); | |
1477 | return -ENOMEM; | |
1478 | } | |
b028461d | 1479 | /* Fill in the command type */ |
7c832835 | 1480 | c->cmd_type = CMD_IOCTL_PEND; |
b028461d | 1481 | /* Fill in Command Header */ |
1482 | c->Header.ReplyQueue = 0; /* unused in simple mode */ | |
1483 | if (iocommand.buf_size > 0) /* buffer to fill */ | |
7c832835 BH |
1484 | { |
1485 | c->Header.SGList = 1; | |
1486 | c->Header.SGTotal = 1; | |
b028461d | 1487 | } else /* no buffers to fill */ |
7c832835 BH |
1488 | { |
1489 | c->Header.SGList = 0; | |
1490 | c->Header.SGTotal = 0; | |
1491 | } | |
1492 | c->Header.LUN = iocommand.LUN_info; | |
b028461d | 1493 | /* use the kernel address the cmd block for tag */ |
1494 | c->Header.Tag.lower = c->busaddr; | |
1da177e4 | 1495 | |
b028461d | 1496 | /* Fill in Request block */ |
7c832835 | 1497 | c->Request = iocommand.Request; |
1da177e4 | 1498 | |
b028461d | 1499 | /* Fill in the scatter gather information */ |
7c832835 BH |
1500 | if (iocommand.buf_size > 0) { |
1501 | temp64.val = pci_map_single(host->pdev, buff, | |
1502 | iocommand.buf_size, | |
1503 | PCI_DMA_BIDIRECTIONAL); | |
1504 | c->SG[0].Addr.lower = temp64.val32.lower; | |
1505 | c->SG[0].Addr.upper = temp64.val32.upper; | |
1506 | c->SG[0].Len = iocommand.buf_size; | |
b028461d | 1507 | c->SG[0].Ext = 0; /* we are not chaining */ |
7c832835 BH |
1508 | } |
1509 | c->waiting = &wait; | |
1510 | ||
664a717d | 1511 | enqueue_cmd_and_start_io(host, c); |
7c832835 BH |
1512 | wait_for_completion(&wait); |
1513 | ||
1514 | /* unlock the buffers from DMA */ | |
1515 | temp64.val32.lower = c->SG[0].Addr.lower; | |
1516 | temp64.val32.upper = c->SG[0].Addr.upper; | |
1517 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, | |
1518 | iocommand.buf_size, | |
1519 | PCI_DMA_BIDIRECTIONAL); | |
1520 | ||
0a9279cc MM |
1521 | check_ioctl_unit_attention(host, c); |
1522 | ||
7c832835 BH |
1523 | /* Copy the error information out */ |
1524 | iocommand.error_info = *(c->err_info); | |
1525 | if (copy_to_user | |
1526 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { | |
1527 | kfree(buff); | |
1da177e4 LT |
1528 | cmd_free(host, c, 0); |
1529 | return -EFAULT; | |
1530 | } | |
7c832835 BH |
1531 | |
1532 | if (iocommand.Request.Type.Direction == XFER_READ) { | |
1533 | /* Copy the data out of the buffer we created */ | |
1534 | if (copy_to_user | |
1535 | (iocommand.buf, buff, iocommand.buf_size)) { | |
1536 | kfree(buff); | |
1537 | cmd_free(host, c, 0); | |
1538 | return -EFAULT; | |
1539 | } | |
1540 | } | |
1541 | kfree(buff); | |
1542 | cmd_free(host, c, 0); | |
1543 | return 0; | |
1da177e4 | 1544 | } |
7c832835 BH |
1545 | case CCISS_BIG_PASSTHRU:{ |
1546 | BIG_IOCTL_Command_struct *ioc; | |
1547 | CommandList_struct *c; | |
1548 | unsigned char **buff = NULL; | |
1549 | int *buff_size = NULL; | |
1550 | u64bit temp64; | |
7c832835 BH |
1551 | BYTE sg_used = 0; |
1552 | int status = 0; | |
1553 | int i; | |
6e9a4738 | 1554 | DECLARE_COMPLETION_ONSTACK(wait); |
7c832835 BH |
1555 | __u32 left; |
1556 | __u32 sz; | |
1557 | BYTE __user *data_ptr; | |
1558 | ||
1559 | if (!arg) | |
1560 | return -EINVAL; | |
1561 | if (!capable(CAP_SYS_RAWIO)) | |
1562 | return -EPERM; | |
1563 | ioc = (BIG_IOCTL_Command_struct *) | |
1564 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
1565 | if (!ioc) { | |
1566 | status = -ENOMEM; | |
1567 | goto cleanup1; | |
1568 | } | |
1569 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
1570 | status = -EFAULT; | |
1571 | goto cleanup1; | |
1572 | } | |
1573 | if ((ioc->buf_size < 1) && | |
1574 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
1da177e4 LT |
1575 | status = -EINVAL; |
1576 | goto cleanup1; | |
7c832835 BH |
1577 | } |
1578 | /* Check kmalloc limits using all SGs */ | |
1579 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
1580 | status = -EINVAL; | |
1581 | goto cleanup1; | |
1582 | } | |
1583 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
1584 | status = -EINVAL; | |
1585 | goto cleanup1; | |
1586 | } | |
1587 | buff = | |
1588 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); | |
1589 | if (!buff) { | |
1da177e4 LT |
1590 | status = -ENOMEM; |
1591 | goto cleanup1; | |
1592 | } | |
5cbded58 | 1593 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
7c832835 BH |
1594 | GFP_KERNEL); |
1595 | if (!buff_size) { | |
1596 | status = -ENOMEM; | |
1597 | goto cleanup1; | |
1598 | } | |
1599 | left = ioc->buf_size; | |
1600 | data_ptr = ioc->buf; | |
1601 | while (left) { | |
1602 | sz = (left > | |
1603 | ioc->malloc_size) ? ioc-> | |
1604 | malloc_size : left; | |
1605 | buff_size[sg_used] = sz; | |
1606 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1607 | if (buff[sg_used] == NULL) { | |
1da177e4 | 1608 | status = -ENOMEM; |
15534d38 JA |
1609 | goto cleanup1; |
1610 | } | |
7c832835 BH |
1611 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1612 | if (copy_from_user | |
1613 | (buff[sg_used], data_ptr, sz)) { | |
f7108f91 | 1614 | status = -EFAULT; |
7c832835 BH |
1615 | goto cleanup1; |
1616 | } | |
1617 | } else { | |
1618 | memset(buff[sg_used], 0, sz); | |
1619 | } | |
1620 | left -= sz; | |
1621 | data_ptr += sz; | |
1622 | sg_used++; | |
1623 | } | |
1624 | if ((c = cmd_alloc(host, 0)) == NULL) { | |
1625 | status = -ENOMEM; | |
1626 | goto cleanup1; | |
1627 | } | |
1628 | c->cmd_type = CMD_IOCTL_PEND; | |
1629 | c->Header.ReplyQueue = 0; | |
1630 | ||
1631 | if (ioc->buf_size > 0) { | |
1632 | c->Header.SGList = sg_used; | |
1633 | c->Header.SGTotal = sg_used; | |
1da177e4 | 1634 | } else { |
7c832835 BH |
1635 | c->Header.SGList = 0; |
1636 | c->Header.SGTotal = 0; | |
1da177e4 | 1637 | } |
7c832835 BH |
1638 | c->Header.LUN = ioc->LUN_info; |
1639 | c->Header.Tag.lower = c->busaddr; | |
1640 | ||
1641 | c->Request = ioc->Request; | |
1642 | if (ioc->buf_size > 0) { | |
7c832835 BH |
1643 | for (i = 0; i < sg_used; i++) { |
1644 | temp64.val = | |
1645 | pci_map_single(host->pdev, buff[i], | |
1646 | buff_size[i], | |
1647 | PCI_DMA_BIDIRECTIONAL); | |
1648 | c->SG[i].Addr.lower = | |
1649 | temp64.val32.lower; | |
1650 | c->SG[i].Addr.upper = | |
1651 | temp64.val32.upper; | |
1652 | c->SG[i].Len = buff_size[i]; | |
1653 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1654 | } | |
1655 | } | |
1656 | c->waiting = &wait; | |
664a717d | 1657 | enqueue_cmd_and_start_io(host, c); |
7c832835 BH |
1658 | wait_for_completion(&wait); |
1659 | /* unlock the buffers from DMA */ | |
1660 | for (i = 0; i < sg_used; i++) { | |
1661 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1662 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1663 | pci_unmap_single(host->pdev, | |
1664 | (dma_addr_t) temp64.val, buff_size[i], | |
1da177e4 | 1665 | PCI_DMA_BIDIRECTIONAL); |
1da177e4 | 1666 | } |
0a9279cc | 1667 | check_ioctl_unit_attention(host, c); |
7c832835 BH |
1668 | /* Copy the error information out */ |
1669 | ioc->error_info = *(c->err_info); | |
1670 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1671 | cmd_free(host, c, 0); | |
1672 | status = -EFAULT; | |
1673 | goto cleanup1; | |
1674 | } | |
1675 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1676 | /* Copy the data out of the buffer we created */ | |
1677 | BYTE __user *ptr = ioc->buf; | |
1678 | for (i = 0; i < sg_used; i++) { | |
1679 | if (copy_to_user | |
1680 | (ptr, buff[i], buff_size[i])) { | |
1681 | cmd_free(host, c, 0); | |
1682 | status = -EFAULT; | |
1683 | goto cleanup1; | |
1684 | } | |
1685 | ptr += buff_size[i]; | |
1da177e4 | 1686 | } |
1da177e4 | 1687 | } |
7c832835 BH |
1688 | cmd_free(host, c, 0); |
1689 | status = 0; | |
1690 | cleanup1: | |
1691 | if (buff) { | |
1692 | for (i = 0; i < sg_used; i++) | |
1693 | kfree(buff[i]); | |
1694 | kfree(buff); | |
1695 | } | |
1696 | kfree(buff_size); | |
1697 | kfree(ioc); | |
1698 | return status; | |
1da177e4 | 1699 | } |
03bbfee5 MMOD |
1700 | |
1701 | /* scsi_cmd_ioctl handles these, below, though some are not */ | |
1702 | /* very meaningful for cciss. SG_IO is the main one people want. */ | |
1703 | ||
1704 | case SG_GET_VERSION_NUM: | |
1705 | case SG_SET_TIMEOUT: | |
1706 | case SG_GET_TIMEOUT: | |
1707 | case SG_GET_RESERVED_SIZE: | |
1708 | case SG_SET_RESERVED_SIZE: | |
1709 | case SG_EMULATED_HOST: | |
1710 | case SG_IO: | |
1711 | case SCSI_IOCTL_SEND_COMMAND: | |
ef7822c2 | 1712 | return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
03bbfee5 MMOD |
1713 | |
1714 | /* scsi_cmd_ioctl would normally handle these, below, but */ | |
1715 | /* they aren't a good fit for cciss, as CD-ROMs are */ | |
1716 | /* not supported, and we don't have any bus/target/lun */ | |
1717 | /* which we present to the kernel. */ | |
1718 | ||
1719 | case CDROM_SEND_PACKET: | |
1720 | case CDROMCLOSETRAY: | |
1721 | case CDROMEJECT: | |
1722 | case SCSI_IOCTL_GET_IDLUN: | |
1723 | case SCSI_IOCTL_GET_BUS_NUMBER: | |
1da177e4 LT |
1724 | default: |
1725 | return -ENOTTY; | |
1726 | } | |
1da177e4 LT |
1727 | } |
1728 | ||
7b30f092 JA |
1729 | static void cciss_check_queues(ctlr_info_t *h) |
1730 | { | |
1731 | int start_queue = h->next_to_run; | |
1732 | int i; | |
1733 | ||
1734 | /* check to see if we have maxed out the number of commands that can | |
1735 | * be placed on the queue. If so then exit. We do this check here | |
1736 | * in case the interrupt we serviced was from an ioctl and did not | |
1737 | * free any new commands. | |
1738 | */ | |
f880632f | 1739 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
7b30f092 JA |
1740 | return; |
1741 | ||
1742 | /* We have room on the queue for more commands. Now we need to queue | |
1743 | * them up. We will also keep track of the next queue to run so | |
1744 | * that every queue gets a chance to be started first. | |
1745 | */ | |
1746 | for (i = 0; i < h->highest_lun + 1; i++) { | |
1747 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); | |
1748 | /* make sure the disk has been added and the drive is real | |
1749 | * because this can be called from the middle of init_one. | |
1750 | */ | |
9cef0d2f SC |
1751 | if (!h->drv[curr_queue]) |
1752 | continue; | |
1753 | if (!(h->drv[curr_queue]->queue) || | |
1754 | !(h->drv[curr_queue]->heads)) | |
7b30f092 JA |
1755 | continue; |
1756 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
1757 | ||
1758 | /* check to see if we have maxed out the number of commands | |
1759 | * that can be placed on the queue. | |
1760 | */ | |
f880632f | 1761 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
7b30f092 JA |
1762 | if (curr_queue == start_queue) { |
1763 | h->next_to_run = | |
1764 | (start_queue + 1) % (h->highest_lun + 1); | |
1765 | break; | |
1766 | } else { | |
1767 | h->next_to_run = curr_queue; | |
1768 | break; | |
1769 | } | |
7b30f092 JA |
1770 | } |
1771 | } | |
1772 | } | |
1773 | ||
ca1e0484 MM |
1774 | static void cciss_softirq_done(struct request *rq) |
1775 | { | |
1776 | CommandList_struct *cmd = rq->completion_data; | |
1777 | ctlr_info_t *h = hba[cmd->ctlr]; | |
5c07a311 | 1778 | SGDescriptor_struct *curr_sg = cmd->SG; |
ca1e0484 | 1779 | u64bit temp64; |
664a717d | 1780 | unsigned long flags; |
ca1e0484 | 1781 | int i, ddir; |
5c07a311 | 1782 | int sg_index = 0; |
ca1e0484 MM |
1783 | |
1784 | if (cmd->Request.Type.Direction == XFER_READ) | |
1785 | ddir = PCI_DMA_FROMDEVICE; | |
1786 | else | |
1787 | ddir = PCI_DMA_TODEVICE; | |
1788 | ||
1789 | /* command did not need to be retried */ | |
1790 | /* unmap the DMA mapping for all the scatter gather elements */ | |
7c832835 | 1791 | for (i = 0; i < cmd->Header.SGList; i++) { |
5c07a311 | 1792 | if (curr_sg[sg_index].Ext == CCISS_SG_CHAIN) { |
d45033ef | 1793 | cciss_unmap_sg_chain_block(h, cmd); |
5c07a311 | 1794 | /* Point to the next block */ |
dccc9b56 | 1795 | curr_sg = h->cmd_sg_list[cmd->cmdindex]; |
5c07a311 DB |
1796 | sg_index = 0; |
1797 | } | |
1798 | temp64.val32.lower = curr_sg[sg_index].Addr.lower; | |
1799 | temp64.val32.upper = curr_sg[sg_index].Addr.upper; | |
1800 | pci_unmap_page(h->pdev, temp64.val, curr_sg[sg_index].Len, | |
1801 | ddir); | |
1802 | ++sg_index; | |
ca1e0484 MM |
1803 | } |
1804 | ||
ca1e0484 MM |
1805 | #ifdef CCISS_DEBUG |
1806 | printk("Done with %p\n", rq); | |
7c832835 | 1807 | #endif /* CCISS_DEBUG */ |
ca1e0484 | 1808 | |
c3a4d78c | 1809 | /* set the residual count for pc requests */ |
33659ebb | 1810 | if (rq->cmd_type == REQ_TYPE_BLOCK_PC) |
c3a4d78c | 1811 | rq->resid_len = cmd->err_info->ResidualCnt; |
ac44e5b2 | 1812 | |
c3a4d78c | 1813 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
3daeea29 | 1814 | |
ca1e0484 | 1815 | spin_lock_irqsave(&h->lock, flags); |
7c832835 | 1816 | cmd_free(h, cmd, 1); |
7b30f092 | 1817 | cciss_check_queues(h); |
ca1e0484 MM |
1818 | spin_unlock_irqrestore(&h->lock, flags); |
1819 | } | |
1820 | ||
39ccf9a6 SC |
1821 | static inline void log_unit_to_scsi3addr(ctlr_info_t *h, |
1822 | unsigned char scsi3addr[], uint32_t log_unit) | |
b57695fe | 1823 | { |
9cef0d2f SC |
1824 | memcpy(scsi3addr, h->drv[log_unit]->LunID, |
1825 | sizeof(h->drv[log_unit]->LunID)); | |
b57695fe | 1826 | } |
1827 | ||
7fe06326 AP |
1828 | /* This function gets the SCSI vendor, model, and revision of a logical drive |
1829 | * via the inquiry page 0. Model, vendor, and rev are set to empty strings if | |
1830 | * they cannot be read. | |
1831 | */ | |
7b838bde | 1832 | static void cciss_get_device_descr(int ctlr, int logvol, |
7fe06326 AP |
1833 | char *vendor, char *model, char *rev) |
1834 | { | |
1835 | int rc; | |
1836 | InquiryData_struct *inq_buf; | |
b57695fe | 1837 | unsigned char scsi3addr[8]; |
7fe06326 AP |
1838 | |
1839 | *vendor = '\0'; | |
1840 | *model = '\0'; | |
1841 | *rev = '\0'; | |
1842 | ||
1843 | inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
1844 | if (!inq_buf) | |
1845 | return; | |
1846 | ||
b57695fe | 1847 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
1848 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buf, sizeof(*inq_buf), 0, |
1849 | scsi3addr, TYPE_CMD); | |
7fe06326 AP |
1850 | if (rc == IO_OK) { |
1851 | memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); | |
1852 | vendor[VENDOR_LEN] = '\0'; | |
1853 | memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); | |
1854 | model[MODEL_LEN] = '\0'; | |
1855 | memcpy(rev, &inq_buf->data_byte[32], REV_LEN); | |
1856 | rev[REV_LEN] = '\0'; | |
1857 | } | |
1858 | ||
1859 | kfree(inq_buf); | |
1860 | return; | |
1861 | } | |
1862 | ||
a72da29b MM |
1863 | /* This function gets the serial number of a logical drive via |
1864 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial | |
1865 | * number cannot be had, for whatever reason, 16 bytes of 0xff | |
1866 | * are returned instead. | |
1867 | */ | |
7b838bde | 1868 | static void cciss_get_serial_no(int ctlr, int logvol, |
a72da29b MM |
1869 | unsigned char *serial_no, int buflen) |
1870 | { | |
1871 | #define PAGE_83_INQ_BYTES 64 | |
1872 | int rc; | |
1873 | unsigned char *buf; | |
b57695fe | 1874 | unsigned char scsi3addr[8]; |
a72da29b MM |
1875 | |
1876 | if (buflen > 16) | |
1877 | buflen = 16; | |
1878 | memset(serial_no, 0xff, buflen); | |
1879 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); | |
1880 | if (!buf) | |
1881 | return; | |
1882 | memset(serial_no, 0, buflen); | |
b57695fe | 1883 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
1884 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf, |
1885 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); | |
a72da29b MM |
1886 | if (rc == IO_OK) |
1887 | memcpy(serial_no, &buf[8], buflen); | |
1888 | kfree(buf); | |
1889 | return; | |
1890 | } | |
1891 | ||
617e1344 SC |
1892 | /* |
1893 | * cciss_add_disk sets up the block device queue for a logical drive | |
1894 | */ | |
1895 | static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, | |
6ae5ce8e MM |
1896 | int drv_index) |
1897 | { | |
1898 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); | |
e8074f79 SC |
1899 | if (!disk->queue) |
1900 | goto init_queue_failure; | |
6ae5ce8e MM |
1901 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); |
1902 | disk->major = h->major; | |
1903 | disk->first_minor = drv_index << NWD_SHIFT; | |
1904 | disk->fops = &cciss_fops; | |
9cef0d2f SC |
1905 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
1906 | goto cleanup_queue; | |
1907 | disk->private_data = h->drv[drv_index]; | |
1908 | disk->driverfs_dev = &h->drv[drv_index]->dev; | |
6ae5ce8e MM |
1909 | |
1910 | /* Set up queue information */ | |
1911 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); | |
1912 | ||
1913 | /* This is a hardware imposed limit. */ | |
8a78362c | 1914 | blk_queue_max_segments(disk->queue, h->maxsgentries); |
6ae5ce8e | 1915 | |
086fa5ff | 1916 | blk_queue_max_hw_sectors(disk->queue, h->cciss_max_sectors); |
6ae5ce8e MM |
1917 | |
1918 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); | |
1919 | ||
1920 | disk->queue->queuedata = h; | |
1921 | ||
e1defc4f | 1922 | blk_queue_logical_block_size(disk->queue, |
9cef0d2f | 1923 | h->drv[drv_index]->block_size); |
6ae5ce8e MM |
1924 | |
1925 | /* Make sure all queue data is written out before */ | |
9cef0d2f | 1926 | /* setting h->drv[drv_index]->queue, as setting this */ |
6ae5ce8e MM |
1927 | /* allows the interrupt handler to start the queue */ |
1928 | wmb(); | |
9cef0d2f | 1929 | h->drv[drv_index]->queue = disk->queue; |
6ae5ce8e | 1930 | add_disk(disk); |
617e1344 SC |
1931 | return 0; |
1932 | ||
1933 | cleanup_queue: | |
1934 | blk_cleanup_queue(disk->queue); | |
1935 | disk->queue = NULL; | |
e8074f79 | 1936 | init_queue_failure: |
617e1344 | 1937 | return -1; |
6ae5ce8e MM |
1938 | } |
1939 | ||
ddd47442 | 1940 | /* This function will check the usage_count of the drive to be updated/added. |
a72da29b MM |
1941 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
1942 | * the drive's capacity, geometry, or serial number has changed, | |
1943 | * then the drive information will be updated and the disk will be | |
1944 | * re-registered with the kernel. If these conditions don't hold, | |
1945 | * then it will be left alone for the next reboot. The exception to this | |
1946 | * is disk 0 which will always be left registered with the kernel since it | |
1947 | * is also the controller node. Any changes to disk 0 will show up on | |
1948 | * the next reboot. | |
7c832835 | 1949 | */ |
2d11d993 SC |
1950 | static void cciss_update_drive_info(int ctlr, int drv_index, int first_time, |
1951 | int via_ioctl) | |
7c832835 | 1952 | { |
ddd47442 MM |
1953 | ctlr_info_t *h = hba[ctlr]; |
1954 | struct gendisk *disk; | |
ddd47442 MM |
1955 | InquiryData_struct *inq_buff = NULL; |
1956 | unsigned int block_size; | |
00988a35 | 1957 | sector_t total_size; |
ddd47442 MM |
1958 | unsigned long flags = 0; |
1959 | int ret = 0; | |
a72da29b MM |
1960 | drive_info_struct *drvinfo; |
1961 | ||
1962 | /* Get information about the disk and modify the driver structure */ | |
1963 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
9cef0d2f | 1964 | drvinfo = kzalloc(sizeof(*drvinfo), GFP_KERNEL); |
a72da29b MM |
1965 | if (inq_buff == NULL || drvinfo == NULL) |
1966 | goto mem_msg; | |
1967 | ||
1968 | /* testing to see if 16-byte CDBs are already being used */ | |
1969 | if (h->cciss_read == CCISS_READ_16) { | |
7b838bde | 1970 | cciss_read_capacity_16(h->ctlr, drv_index, |
a72da29b MM |
1971 | &total_size, &block_size); |
1972 | ||
1973 | } else { | |
7b838bde | 1974 | cciss_read_capacity(ctlr, drv_index, &total_size, &block_size); |
a72da29b MM |
1975 | /* if read_capacity returns all F's this volume is >2TB */ |
1976 | /* in size so we switch to 16-byte CDB's for all */ | |
1977 | /* read/write ops */ | |
1978 | if (total_size == 0xFFFFFFFFULL) { | |
7b838bde | 1979 | cciss_read_capacity_16(ctlr, drv_index, |
a72da29b MM |
1980 | &total_size, &block_size); |
1981 | h->cciss_read = CCISS_READ_16; | |
1982 | h->cciss_write = CCISS_WRITE_16; | |
1983 | } else { | |
1984 | h->cciss_read = CCISS_READ_10; | |
1985 | h->cciss_write = CCISS_WRITE_10; | |
1986 | } | |
1987 | } | |
1988 | ||
7b838bde | 1989 | cciss_geometry_inquiry(ctlr, drv_index, total_size, block_size, |
a72da29b MM |
1990 | inq_buff, drvinfo); |
1991 | drvinfo->block_size = block_size; | |
1992 | drvinfo->nr_blocks = total_size + 1; | |
1993 | ||
7b838bde | 1994 | cciss_get_device_descr(ctlr, drv_index, drvinfo->vendor, |
7fe06326 | 1995 | drvinfo->model, drvinfo->rev); |
7b838bde | 1996 | cciss_get_serial_no(ctlr, drv_index, drvinfo->serial_no, |
a72da29b | 1997 | sizeof(drvinfo->serial_no)); |
9cef0d2f SC |
1998 | /* Save the lunid in case we deregister the disk, below. */ |
1999 | memcpy(drvinfo->LunID, h->drv[drv_index]->LunID, | |
2000 | sizeof(drvinfo->LunID)); | |
a72da29b MM |
2001 | |
2002 | /* Is it the same disk we already know, and nothing's changed? */ | |
9cef0d2f | 2003 | if (h->drv[drv_index]->raid_level != -1 && |
a72da29b | 2004 | ((memcmp(drvinfo->serial_no, |
9cef0d2f SC |
2005 | h->drv[drv_index]->serial_no, 16) == 0) && |
2006 | drvinfo->block_size == h->drv[drv_index]->block_size && | |
2007 | drvinfo->nr_blocks == h->drv[drv_index]->nr_blocks && | |
2008 | drvinfo->heads == h->drv[drv_index]->heads && | |
2009 | drvinfo->sectors == h->drv[drv_index]->sectors && | |
2010 | drvinfo->cylinders == h->drv[drv_index]->cylinders)) | |
a72da29b MM |
2011 | /* The disk is unchanged, nothing to update */ |
2012 | goto freeret; | |
a72da29b | 2013 | |
6ae5ce8e MM |
2014 | /* If we get here it's not the same disk, or something's changed, |
2015 | * so we need to * deregister it, and re-register it, if it's not | |
2016 | * in use. | |
2017 | * If the disk already exists then deregister it before proceeding | |
2018 | * (unless it's the first disk (for the controller node). | |
2019 | */ | |
9cef0d2f | 2020 | if (h->drv[drv_index]->raid_level != -1 && drv_index != 0) { |
a72da29b | 2021 | printk(KERN_WARNING "disk %d has changed.\n", drv_index); |
ddd47442 | 2022 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
9cef0d2f | 2023 | h->drv[drv_index]->busy_configuring = 1; |
ddd47442 | 2024 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
e14ac670 | 2025 | |
9cef0d2f | 2026 | /* deregister_disk sets h->drv[drv_index]->queue = NULL |
6ae5ce8e MM |
2027 | * which keeps the interrupt handler from starting |
2028 | * the queue. | |
2029 | */ | |
2d11d993 | 2030 | ret = deregister_disk(h, drv_index, 0, via_ioctl); |
ddd47442 MM |
2031 | } |
2032 | ||
2033 | /* If the disk is in use return */ | |
2034 | if (ret) | |
a72da29b MM |
2035 | goto freeret; |
2036 | ||
6ae5ce8e | 2037 | /* Save the new information from cciss_geometry_inquiry |
9cef0d2f SC |
2038 | * and serial number inquiry. If the disk was deregistered |
2039 | * above, then h->drv[drv_index] will be NULL. | |
6ae5ce8e | 2040 | */ |
9cef0d2f SC |
2041 | if (h->drv[drv_index] == NULL) { |
2042 | drvinfo->device_initialized = 0; | |
2043 | h->drv[drv_index] = drvinfo; | |
2044 | drvinfo = NULL; /* so it won't be freed below. */ | |
2045 | } else { | |
2046 | /* special case for cxd0 */ | |
2047 | h->drv[drv_index]->block_size = drvinfo->block_size; | |
2048 | h->drv[drv_index]->nr_blocks = drvinfo->nr_blocks; | |
2049 | h->drv[drv_index]->heads = drvinfo->heads; | |
2050 | h->drv[drv_index]->sectors = drvinfo->sectors; | |
2051 | h->drv[drv_index]->cylinders = drvinfo->cylinders; | |
2052 | h->drv[drv_index]->raid_level = drvinfo->raid_level; | |
2053 | memcpy(h->drv[drv_index]->serial_no, drvinfo->serial_no, 16); | |
2054 | memcpy(h->drv[drv_index]->vendor, drvinfo->vendor, | |
2055 | VENDOR_LEN + 1); | |
2056 | memcpy(h->drv[drv_index]->model, drvinfo->model, MODEL_LEN + 1); | |
2057 | memcpy(h->drv[drv_index]->rev, drvinfo->rev, REV_LEN + 1); | |
2058 | } | |
ddd47442 MM |
2059 | |
2060 | ++h->num_luns; | |
2061 | disk = h->gendisk[drv_index]; | |
9cef0d2f | 2062 | set_capacity(disk, h->drv[drv_index]->nr_blocks); |
ddd47442 | 2063 | |
6ae5ce8e MM |
2064 | /* If it's not disk 0 (drv_index != 0) |
2065 | * or if it was disk 0, but there was previously | |
2066 | * no actual corresponding configured logical drive | |
2067 | * (raid_leve == -1) then we want to update the | |
2068 | * logical drive's information. | |
2069 | */ | |
361e9b07 SC |
2070 | if (drv_index || first_time) { |
2071 | if (cciss_add_disk(h, disk, drv_index) != 0) { | |
2072 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 2073 | cciss_free_drive_info(h, drv_index); |
361e9b07 SC |
2074 | printk(KERN_WARNING "cciss:%d could not update " |
2075 | "disk %d\n", h->ctlr, drv_index); | |
2076 | --h->num_luns; | |
2077 | } | |
2078 | } | |
ddd47442 | 2079 | |
6ae5ce8e | 2080 | freeret: |
ddd47442 | 2081 | kfree(inq_buff); |
a72da29b | 2082 | kfree(drvinfo); |
ddd47442 | 2083 | return; |
6ae5ce8e | 2084 | mem_msg: |
ddd47442 MM |
2085 | printk(KERN_ERR "cciss: out of memory\n"); |
2086 | goto freeret; | |
2087 | } | |
2088 | ||
2089 | /* This function will find the first index of the controllers drive array | |
9cef0d2f SC |
2090 | * that has a null drv pointer and allocate the drive info struct and |
2091 | * will return that index This is where new drives will be added. | |
2092 | * If the index to be returned is greater than the highest_lun index for | |
2093 | * the controller then highest_lun is set * to this new index. | |
2094 | * If there are no available indexes or if tha allocation fails, then -1 | |
2095 | * is returned. * "controller_node" is used to know if this is a real | |
2096 | * logical drive, or just the controller node, which determines if this | |
2097 | * counts towards highest_lun. | |
7c832835 | 2098 | */ |
9cef0d2f | 2099 | static int cciss_alloc_drive_info(ctlr_info_t *h, int controller_node) |
ddd47442 MM |
2100 | { |
2101 | int i; | |
9cef0d2f | 2102 | drive_info_struct *drv; |
ddd47442 | 2103 | |
9cef0d2f | 2104 | /* Search for an empty slot for our drive info */ |
7c832835 | 2105 | for (i = 0; i < CISS_MAX_LUN; i++) { |
9cef0d2f SC |
2106 | |
2107 | /* if not cxd0 case, and it's occupied, skip it. */ | |
2108 | if (h->drv[i] && i != 0) | |
2109 | continue; | |
2110 | /* | |
2111 | * If it's cxd0 case, and drv is alloc'ed already, and a | |
2112 | * disk is configured there, skip it. | |
2113 | */ | |
2114 | if (i == 0 && h->drv[i] && h->drv[i]->raid_level != -1) | |
2115 | continue; | |
2116 | ||
2117 | /* | |
2118 | * We've found an empty slot. Update highest_lun | |
2119 | * provided this isn't just the fake cxd0 controller node. | |
2120 | */ | |
2121 | if (i > h->highest_lun && !controller_node) | |
2122 | h->highest_lun = i; | |
2123 | ||
2124 | /* If adding a real disk at cxd0, and it's already alloc'ed */ | |
2125 | if (i == 0 && h->drv[i] != NULL) | |
ddd47442 | 2126 | return i; |
9cef0d2f SC |
2127 | |
2128 | /* | |
2129 | * Found an empty slot, not already alloc'ed. Allocate it. | |
2130 | * Mark it with raid_level == -1, so we know it's new later on. | |
2131 | */ | |
2132 | drv = kzalloc(sizeof(*drv), GFP_KERNEL); | |
2133 | if (!drv) | |
2134 | return -1; | |
2135 | drv->raid_level = -1; /* so we know it's new */ | |
2136 | h->drv[i] = drv; | |
2137 | return i; | |
ddd47442 MM |
2138 | } |
2139 | return -1; | |
2140 | } | |
2141 | ||
9cef0d2f SC |
2142 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index) |
2143 | { | |
2144 | kfree(h->drv[drv_index]); | |
2145 | h->drv[drv_index] = NULL; | |
2146 | } | |
2147 | ||
361e9b07 SC |
2148 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index) |
2149 | { | |
2150 | put_disk(h->gendisk[drv_index]); | |
2151 | h->gendisk[drv_index] = NULL; | |
2152 | } | |
2153 | ||
6ae5ce8e MM |
2154 | /* cciss_add_gendisk finds a free hba[]->drv structure |
2155 | * and allocates a gendisk if needed, and sets the lunid | |
2156 | * in the drvinfo structure. It returns the index into | |
2157 | * the ->drv[] array, or -1 if none are free. | |
2158 | * is_controller_node indicates whether highest_lun should | |
2159 | * count this disk, or if it's only being added to provide | |
2160 | * a means to talk to the controller in case no logical | |
2161 | * drives have yet been configured. | |
2162 | */ | |
39ccf9a6 SC |
2163 | static int cciss_add_gendisk(ctlr_info_t *h, unsigned char lunid[], |
2164 | int controller_node) | |
6ae5ce8e MM |
2165 | { |
2166 | int drv_index; | |
2167 | ||
9cef0d2f | 2168 | drv_index = cciss_alloc_drive_info(h, controller_node); |
6ae5ce8e MM |
2169 | if (drv_index == -1) |
2170 | return -1; | |
8ce51966 | 2171 | |
6ae5ce8e MM |
2172 | /*Check if the gendisk needs to be allocated */ |
2173 | if (!h->gendisk[drv_index]) { | |
2174 | h->gendisk[drv_index] = | |
2175 | alloc_disk(1 << NWD_SHIFT); | |
2176 | if (!h->gendisk[drv_index]) { | |
2177 | printk(KERN_ERR "cciss%d: could not " | |
2178 | "allocate a new disk %d\n", | |
2179 | h->ctlr, drv_index); | |
9cef0d2f | 2180 | goto err_free_drive_info; |
6ae5ce8e MM |
2181 | } |
2182 | } | |
9cef0d2f SC |
2183 | memcpy(h->drv[drv_index]->LunID, lunid, |
2184 | sizeof(h->drv[drv_index]->LunID)); | |
2185 | if (cciss_create_ld_sysfs_entry(h, drv_index)) | |
7fe06326 | 2186 | goto err_free_disk; |
6ae5ce8e MM |
2187 | /* Don't need to mark this busy because nobody */ |
2188 | /* else knows about this disk yet to contend */ | |
2189 | /* for access to it. */ | |
9cef0d2f | 2190 | h->drv[drv_index]->busy_configuring = 0; |
6ae5ce8e MM |
2191 | wmb(); |
2192 | return drv_index; | |
7fe06326 AP |
2193 | |
2194 | err_free_disk: | |
361e9b07 | 2195 | cciss_free_gendisk(h, drv_index); |
9cef0d2f SC |
2196 | err_free_drive_info: |
2197 | cciss_free_drive_info(h, drv_index); | |
7fe06326 | 2198 | return -1; |
6ae5ce8e MM |
2199 | } |
2200 | ||
2201 | /* This is for the special case of a controller which | |
2202 | * has no logical drives. In this case, we still need | |
2203 | * to register a disk so the controller can be accessed | |
2204 | * by the Array Config Utility. | |
2205 | */ | |
2206 | static void cciss_add_controller_node(ctlr_info_t *h) | |
2207 | { | |
2208 | struct gendisk *disk; | |
2209 | int drv_index; | |
2210 | ||
2211 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ | |
2212 | return; | |
2213 | ||
39ccf9a6 | 2214 | drv_index = cciss_add_gendisk(h, CTLR_LUNID, 1); |
361e9b07 SC |
2215 | if (drv_index == -1) |
2216 | goto error; | |
9cef0d2f SC |
2217 | h->drv[drv_index]->block_size = 512; |
2218 | h->drv[drv_index]->nr_blocks = 0; | |
2219 | h->drv[drv_index]->heads = 0; | |
2220 | h->drv[drv_index]->sectors = 0; | |
2221 | h->drv[drv_index]->cylinders = 0; | |
2222 | h->drv[drv_index]->raid_level = -1; | |
2223 | memset(h->drv[drv_index]->serial_no, 0, 16); | |
6ae5ce8e | 2224 | disk = h->gendisk[drv_index]; |
361e9b07 SC |
2225 | if (cciss_add_disk(h, disk, drv_index) == 0) |
2226 | return; | |
2227 | cciss_free_gendisk(h, drv_index); | |
9cef0d2f | 2228 | cciss_free_drive_info(h, drv_index); |
361e9b07 SC |
2229 | error: |
2230 | printk(KERN_WARNING "cciss%d: could not " | |
2231 | "add disk 0.\n", h->ctlr); | |
2232 | return; | |
6ae5ce8e MM |
2233 | } |
2234 | ||
ddd47442 | 2235 | /* This function will add and remove logical drives from the Logical |
d14c4ab5 | 2236 | * drive array of the controller and maintain persistency of ordering |
ddd47442 MM |
2237 | * so that mount points are preserved until the next reboot. This allows |
2238 | * for the removal of logical drives in the middle of the drive array | |
2239 | * without a re-ordering of those drives. | |
2240 | * INPUT | |
2241 | * h = The controller to perform the operations on | |
7c832835 | 2242 | */ |
2d11d993 SC |
2243 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, |
2244 | int via_ioctl) | |
1da177e4 | 2245 | { |
ddd47442 MM |
2246 | int ctlr = h->ctlr; |
2247 | int num_luns; | |
2248 | ReportLunData_struct *ld_buff = NULL; | |
ddd47442 MM |
2249 | int return_code; |
2250 | int listlength = 0; | |
2251 | int i; | |
2252 | int drv_found; | |
2253 | int drv_index = 0; | |
39ccf9a6 | 2254 | unsigned char lunid[8] = CTLR_LUNID; |
1da177e4 | 2255 | unsigned long flags; |
ddd47442 | 2256 | |
6ae5ce8e MM |
2257 | if (!capable(CAP_SYS_RAWIO)) |
2258 | return -EPERM; | |
2259 | ||
ddd47442 MM |
2260 | /* Set busy_configuring flag for this operation */ |
2261 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
7c832835 | 2262 | if (h->busy_configuring) { |
ddd47442 MM |
2263 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2264 | return -EBUSY; | |
2265 | } | |
2266 | h->busy_configuring = 1; | |
a72da29b | 2267 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
ddd47442 | 2268 | |
a72da29b MM |
2269 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
2270 | if (ld_buff == NULL) | |
2271 | goto mem_msg; | |
2272 | ||
2273 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
b57695fe | 2274 | sizeof(ReportLunData_struct), |
2275 | 0, CTLR_LUNID, TYPE_CMD); | |
ddd47442 | 2276 | |
a72da29b MM |
2277 | if (return_code == IO_OK) |
2278 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); | |
2279 | else { /* reading number of logical volumes failed */ | |
2280 | printk(KERN_WARNING "cciss: report logical volume" | |
2281 | " command failed\n"); | |
2282 | listlength = 0; | |
2283 | goto freeret; | |
2284 | } | |
2285 | ||
2286 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
2287 | if (num_luns > CISS_MAX_LUN) { | |
2288 | num_luns = CISS_MAX_LUN; | |
2289 | printk(KERN_WARNING "cciss: more luns configured" | |
2290 | " on controller than can be handled by" | |
2291 | " this driver.\n"); | |
2292 | } | |
2293 | ||
6ae5ce8e MM |
2294 | if (num_luns == 0) |
2295 | cciss_add_controller_node(h); | |
2296 | ||
2297 | /* Compare controller drive array to driver's drive array | |
2298 | * to see if any drives are missing on the controller due | |
2299 | * to action of Array Config Utility (user deletes drive) | |
2300 | * and deregister logical drives which have disappeared. | |
2301 | */ | |
a72da29b MM |
2302 | for (i = 0; i <= h->highest_lun; i++) { |
2303 | int j; | |
2304 | drv_found = 0; | |
d8a0be6a SC |
2305 | |
2306 | /* skip holes in the array from already deleted drives */ | |
9cef0d2f | 2307 | if (h->drv[i] == NULL) |
d8a0be6a SC |
2308 | continue; |
2309 | ||
a72da29b | 2310 | for (j = 0; j < num_luns; j++) { |
39ccf9a6 | 2311 | memcpy(lunid, &ld_buff->LUN[j][0], sizeof(lunid)); |
9cef0d2f | 2312 | if (memcmp(h->drv[i]->LunID, lunid, |
39ccf9a6 | 2313 | sizeof(lunid)) == 0) { |
a72da29b MM |
2314 | drv_found = 1; |
2315 | break; | |
2316 | } | |
2317 | } | |
2318 | if (!drv_found) { | |
2319 | /* Deregister it from the OS, it's gone. */ | |
2320 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
9cef0d2f | 2321 | h->drv[i]->busy_configuring = 1; |
a72da29b | 2322 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
2d11d993 | 2323 | return_code = deregister_disk(h, i, 1, via_ioctl); |
9cef0d2f SC |
2324 | if (h->drv[i] != NULL) |
2325 | h->drv[i]->busy_configuring = 0; | |
ddd47442 | 2326 | } |
a72da29b | 2327 | } |
ddd47442 | 2328 | |
a72da29b MM |
2329 | /* Compare controller drive array to driver's drive array. |
2330 | * Check for updates in the drive information and any new drives | |
2331 | * on the controller due to ACU adding logical drives, or changing | |
2332 | * a logical drive's size, etc. Reregister any new/changed drives | |
2333 | */ | |
2334 | for (i = 0; i < num_luns; i++) { | |
2335 | int j; | |
ddd47442 | 2336 | |
a72da29b | 2337 | drv_found = 0; |
ddd47442 | 2338 | |
39ccf9a6 | 2339 | memcpy(lunid, &ld_buff->LUN[i][0], sizeof(lunid)); |
a72da29b MM |
2340 | /* Find if the LUN is already in the drive array |
2341 | * of the driver. If so then update its info | |
2342 | * if not in use. If it does not exist then find | |
2343 | * the first free index and add it. | |
2344 | */ | |
2345 | for (j = 0; j <= h->highest_lun; j++) { | |
9cef0d2f SC |
2346 | if (h->drv[j] != NULL && |
2347 | memcmp(h->drv[j]->LunID, lunid, | |
2348 | sizeof(h->drv[j]->LunID)) == 0) { | |
a72da29b MM |
2349 | drv_index = j; |
2350 | drv_found = 1; | |
2351 | break; | |
ddd47442 | 2352 | } |
a72da29b | 2353 | } |
ddd47442 | 2354 | |
a72da29b MM |
2355 | /* check if the drive was found already in the array */ |
2356 | if (!drv_found) { | |
eece695f | 2357 | drv_index = cciss_add_gendisk(h, lunid, 0); |
a72da29b MM |
2358 | if (drv_index == -1) |
2359 | goto freeret; | |
a72da29b | 2360 | } |
2d11d993 SC |
2361 | cciss_update_drive_info(ctlr, drv_index, first_time, |
2362 | via_ioctl); | |
a72da29b | 2363 | } /* end for */ |
ddd47442 | 2364 | |
6ae5ce8e | 2365 | freeret: |
ddd47442 MM |
2366 | kfree(ld_buff); |
2367 | h->busy_configuring = 0; | |
2368 | /* We return -1 here to tell the ACU that we have registered/updated | |
2369 | * all of the drives that we can and to keep it from calling us | |
2370 | * additional times. | |
7c832835 | 2371 | */ |
ddd47442 | 2372 | return -1; |
6ae5ce8e | 2373 | mem_msg: |
ddd47442 | 2374 | printk(KERN_ERR "cciss: out of memory\n"); |
a72da29b | 2375 | h->busy_configuring = 0; |
ddd47442 MM |
2376 | goto freeret; |
2377 | } | |
2378 | ||
9ddb27b4 SC |
2379 | static void cciss_clear_drive_info(drive_info_struct *drive_info) |
2380 | { | |
2381 | /* zero out the disk size info */ | |
2382 | drive_info->nr_blocks = 0; | |
2383 | drive_info->block_size = 0; | |
2384 | drive_info->heads = 0; | |
2385 | drive_info->sectors = 0; | |
2386 | drive_info->cylinders = 0; | |
2387 | drive_info->raid_level = -1; | |
2388 | memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no)); | |
2389 | memset(drive_info->model, 0, sizeof(drive_info->model)); | |
2390 | memset(drive_info->rev, 0, sizeof(drive_info->rev)); | |
2391 | memset(drive_info->vendor, 0, sizeof(drive_info->vendor)); | |
2392 | /* | |
2393 | * don't clear the LUNID though, we need to remember which | |
2394 | * one this one is. | |
2395 | */ | |
2396 | } | |
2397 | ||
ddd47442 MM |
2398 | /* This function will deregister the disk and it's queue from the |
2399 | * kernel. It must be called with the controller lock held and the | |
2400 | * drv structures busy_configuring flag set. It's parameters are: | |
2401 | * | |
2402 | * disk = This is the disk to be deregistered | |
2403 | * drv = This is the drive_info_struct associated with the disk to be | |
2404 | * deregistered. It contains information about the disk used | |
2405 | * by the driver. | |
2406 | * clear_all = This flag determines whether or not the disk information | |
2407 | * is going to be completely cleared out and the highest_lun | |
2408 | * reset. Sometimes we want to clear out information about | |
d14c4ab5 | 2409 | * the disk in preparation for re-adding it. In this case |
ddd47442 MM |
2410 | * the highest_lun should be left unchanged and the LunID |
2411 | * should not be cleared. | |
2d11d993 SC |
2412 | * via_ioctl |
2413 | * This indicates whether we've reached this path via ioctl. | |
2414 | * This affects the maximum usage count allowed for c0d0 to be messed with. | |
2415 | * If this path is reached via ioctl(), then the max_usage_count will | |
2416 | * be 1, as the process calling ioctl() has got to have the device open. | |
2417 | * If we get here via sysfs, then the max usage count will be zero. | |
ddd47442 | 2418 | */ |
a0ea8622 | 2419 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
2d11d993 | 2420 | int clear_all, int via_ioctl) |
ddd47442 | 2421 | { |
799202cb | 2422 | int i; |
a0ea8622 SC |
2423 | struct gendisk *disk; |
2424 | drive_info_struct *drv; | |
9cef0d2f | 2425 | int recalculate_highest_lun; |
1da177e4 LT |
2426 | |
2427 | if (!capable(CAP_SYS_RAWIO)) | |
2428 | return -EPERM; | |
2429 | ||
9cef0d2f | 2430 | drv = h->drv[drv_index]; |
a0ea8622 SC |
2431 | disk = h->gendisk[drv_index]; |
2432 | ||
1da177e4 | 2433 | /* make sure logical volume is NOT is use */ |
7c832835 | 2434 | if (clear_all || (h->gendisk[0] == disk)) { |
2d11d993 | 2435 | if (drv->usage_count > via_ioctl) |
7c832835 BH |
2436 | return -EBUSY; |
2437 | } else if (drv->usage_count > 0) | |
2438 | return -EBUSY; | |
1da177e4 | 2439 | |
9cef0d2f SC |
2440 | recalculate_highest_lun = (drv == h->drv[h->highest_lun]); |
2441 | ||
ddd47442 MM |
2442 | /* invalidate the devices and deregister the disk. If it is disk |
2443 | * zero do not deregister it but just zero out it's values. This | |
2444 | * allows us to delete disk zero but keep the controller registered. | |
7c832835 BH |
2445 | */ |
2446 | if (h->gendisk[0] != disk) { | |
5a9df732 | 2447 | struct request_queue *q = disk->queue; |
097d0264 | 2448 | if (disk->flags & GENHD_FL_UP) { |
8ce51966 | 2449 | cciss_destroy_ld_sysfs_entry(h, drv_index, 0); |
5a9df732 | 2450 | del_gendisk(disk); |
5a9df732 | 2451 | } |
9cef0d2f | 2452 | if (q) |
5a9df732 | 2453 | blk_cleanup_queue(q); |
5a9df732 AB |
2454 | /* If clear_all is set then we are deleting the logical |
2455 | * drive, not just refreshing its info. For drives | |
2456 | * other than disk 0 we will call put_disk. We do not | |
2457 | * do this for disk 0 as we need it to be able to | |
2458 | * configure the controller. | |
a72da29b | 2459 | */ |
5a9df732 AB |
2460 | if (clear_all){ |
2461 | /* This isn't pretty, but we need to find the | |
2462 | * disk in our array and NULL our the pointer. | |
2463 | * This is so that we will call alloc_disk if | |
2464 | * this index is used again later. | |
a72da29b | 2465 | */ |
5a9df732 | 2466 | for (i=0; i < CISS_MAX_LUN; i++){ |
a72da29b | 2467 | if (h->gendisk[i] == disk) { |
5a9df732 AB |
2468 | h->gendisk[i] = NULL; |
2469 | break; | |
799202cb | 2470 | } |
799202cb | 2471 | } |
5a9df732 | 2472 | put_disk(disk); |
ddd47442 | 2473 | } |
799202cb MM |
2474 | } else { |
2475 | set_capacity(disk, 0); | |
9cef0d2f | 2476 | cciss_clear_drive_info(drv); |
ddd47442 MM |
2477 | } |
2478 | ||
2479 | --h->num_luns; | |
ddd47442 | 2480 | |
9cef0d2f SC |
2481 | /* if it was the last disk, find the new hightest lun */ |
2482 | if (clear_all && recalculate_highest_lun) { | |
c2d45b4d | 2483 | int newhighest = -1; |
9cef0d2f SC |
2484 | for (i = 0; i <= h->highest_lun; i++) { |
2485 | /* if the disk has size > 0, it is available */ | |
2486 | if (h->drv[i] && h->drv[i]->heads) | |
2487 | newhighest = i; | |
1da177e4 | 2488 | } |
9cef0d2f | 2489 | h->highest_lun = newhighest; |
ddd47442 | 2490 | } |
e2019b58 | 2491 | return 0; |
1da177e4 | 2492 | } |
ddd47442 | 2493 | |
b57695fe | 2494 | static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, |
2495 | size_t size, __u8 page_code, unsigned char *scsi3addr, | |
2496 | int cmd_type) | |
1da177e4 | 2497 | { |
7c832835 | 2498 | ctlr_info_t *h = hba[ctlr]; |
1da177e4 LT |
2499 | u64bit buff_dma_handle; |
2500 | int status = IO_OK; | |
2501 | ||
2502 | c->cmd_type = CMD_IOCTL_PEND; | |
2503 | c->Header.ReplyQueue = 0; | |
7c832835 | 2504 | if (buff != NULL) { |
1da177e4 | 2505 | c->Header.SGList = 1; |
7c832835 | 2506 | c->Header.SGTotal = 1; |
1da177e4 LT |
2507 | } else { |
2508 | c->Header.SGList = 0; | |
7c832835 | 2509 | c->Header.SGTotal = 0; |
1da177e4 LT |
2510 | } |
2511 | c->Header.Tag.lower = c->busaddr; | |
b57695fe | 2512 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
1da177e4 LT |
2513 | |
2514 | c->Request.Type.Type = cmd_type; | |
2515 | if (cmd_type == TYPE_CMD) { | |
7c832835 BH |
2516 | switch (cmd) { |
2517 | case CISS_INQUIRY: | |
1da177e4 | 2518 | /* are we trying to read a vital product page */ |
7c832835 | 2519 | if (page_code != 0) { |
1da177e4 LT |
2520 | c->Request.CDB[1] = 0x01; |
2521 | c->Request.CDB[2] = page_code; | |
2522 | } | |
2523 | c->Request.CDBLen = 6; | |
7c832835 | 2524 | c->Request.Type.Attribute = ATTR_SIMPLE; |
1da177e4 LT |
2525 | c->Request.Type.Direction = XFER_READ; |
2526 | c->Request.Timeout = 0; | |
7c832835 BH |
2527 | c->Request.CDB[0] = CISS_INQUIRY; |
2528 | c->Request.CDB[4] = size & 0xFF; | |
2529 | break; | |
1da177e4 LT |
2530 | case CISS_REPORT_LOG: |
2531 | case CISS_REPORT_PHYS: | |
7c832835 | 2532 | /* Talking to controller so It's a physical command |
1da177e4 | 2533 | mode = 00 target = 0. Nothing to write. |
7c832835 | 2534 | */ |
1da177e4 LT |
2535 | c->Request.CDBLen = 12; |
2536 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2537 | c->Request.Type.Direction = XFER_READ; | |
2538 | c->Request.Timeout = 0; | |
2539 | c->Request.CDB[0] = cmd; | |
b028461d | 2540 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ |
1da177e4 LT |
2541 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
2542 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
2543 | c->Request.CDB[9] = size & 0xFF; | |
2544 | break; | |
2545 | ||
2546 | case CCISS_READ_CAPACITY: | |
1da177e4 LT |
2547 | c->Request.CDBLen = 10; |
2548 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2549 | c->Request.Type.Direction = XFER_READ; | |
2550 | c->Request.Timeout = 0; | |
2551 | c->Request.CDB[0] = cmd; | |
7c832835 | 2552 | break; |
00988a35 | 2553 | case CCISS_READ_CAPACITY_16: |
00988a35 MMOD |
2554 | c->Request.CDBLen = 16; |
2555 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2556 | c->Request.Type.Direction = XFER_READ; | |
2557 | c->Request.Timeout = 0; | |
2558 | c->Request.CDB[0] = cmd; | |
2559 | c->Request.CDB[1] = 0x10; | |
2560 | c->Request.CDB[10] = (size >> 24) & 0xFF; | |
2561 | c->Request.CDB[11] = (size >> 16) & 0xFF; | |
2562 | c->Request.CDB[12] = (size >> 8) & 0xFF; | |
2563 | c->Request.CDB[13] = size & 0xFF; | |
2564 | c->Request.Timeout = 0; | |
2565 | c->Request.CDB[0] = cmd; | |
2566 | break; | |
1da177e4 LT |
2567 | case CCISS_CACHE_FLUSH: |
2568 | c->Request.CDBLen = 12; | |
2569 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2570 | c->Request.Type.Direction = XFER_WRITE; | |
2571 | c->Request.Timeout = 0; | |
2572 | c->Request.CDB[0] = BMIC_WRITE; | |
2573 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
7c832835 | 2574 | break; |
88f627ae | 2575 | case TEST_UNIT_READY: |
88f627ae SC |
2576 | c->Request.CDBLen = 6; |
2577 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2578 | c->Request.Type.Direction = XFER_NONE; | |
2579 | c->Request.Timeout = 0; | |
2580 | break; | |
1da177e4 LT |
2581 | default: |
2582 | printk(KERN_WARNING | |
7c832835 | 2583 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
e2019b58 | 2584 | return IO_ERROR; |
1da177e4 LT |
2585 | } |
2586 | } else if (cmd_type == TYPE_MSG) { | |
2587 | switch (cmd) { | |
7c832835 | 2588 | case 0: /* ABORT message */ |
3da8b713 | 2589 | c->Request.CDBLen = 12; |
2590 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2591 | c->Request.Type.Direction = XFER_WRITE; | |
2592 | c->Request.Timeout = 0; | |
7c832835 BH |
2593 | c->Request.CDB[0] = cmd; /* abort */ |
2594 | c->Request.CDB[1] = 0; /* abort a command */ | |
3da8b713 | 2595 | /* buff contains the tag of the command to abort */ |
2596 | memcpy(&c->Request.CDB[4], buff, 8); | |
2597 | break; | |
7c832835 | 2598 | case 1: /* RESET message */ |
88f627ae | 2599 | c->Request.CDBLen = 16; |
3da8b713 | 2600 | c->Request.Type.Attribute = ATTR_SIMPLE; |
88f627ae | 2601 | c->Request.Type.Direction = XFER_NONE; |
3da8b713 | 2602 | c->Request.Timeout = 0; |
2603 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
7c832835 | 2604 | c->Request.CDB[0] = cmd; /* reset */ |
88f627ae | 2605 | c->Request.CDB[1] = 0x03; /* reset a target */ |
00988a35 | 2606 | break; |
1da177e4 LT |
2607 | case 3: /* No-Op message */ |
2608 | c->Request.CDBLen = 1; | |
2609 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2610 | c->Request.Type.Direction = XFER_WRITE; | |
2611 | c->Request.Timeout = 0; | |
2612 | c->Request.CDB[0] = cmd; | |
2613 | break; | |
2614 | default: | |
2615 | printk(KERN_WARNING | |
7c832835 | 2616 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
1da177e4 LT |
2617 | return IO_ERROR; |
2618 | } | |
2619 | } else { | |
2620 | printk(KERN_WARNING | |
7c832835 | 2621 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
1da177e4 LT |
2622 | return IO_ERROR; |
2623 | } | |
2624 | /* Fill in the scatter gather information */ | |
2625 | if (size > 0) { | |
2626 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
7c832835 BH |
2627 | buff, size, |
2628 | PCI_DMA_BIDIRECTIONAL); | |
1da177e4 LT |
2629 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
2630 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
2631 | c->SG[0].Len = size; | |
7c832835 | 2632 | c->SG[0].Ext = 0; /* we are not chaining */ |
1da177e4 LT |
2633 | } |
2634 | return status; | |
2635 | } | |
7c832835 | 2636 | |
3c2ab402 | 2637 | static int check_target_status(ctlr_info_t *h, CommandList_struct *c) |
2638 | { | |
2639 | switch (c->err_info->ScsiStatus) { | |
2640 | case SAM_STAT_GOOD: | |
2641 | return IO_OK; | |
2642 | case SAM_STAT_CHECK_CONDITION: | |
2643 | switch (0xf & c->err_info->SenseInfo[2]) { | |
2644 | case 0: return IO_OK; /* no sense */ | |
2645 | case 1: return IO_OK; /* recovered error */ | |
2646 | default: | |
c08fac65 SC |
2647 | if (check_for_unit_attention(h, c)) |
2648 | return IO_NEEDS_RETRY; | |
3c2ab402 | 2649 | printk(KERN_WARNING "cciss%d: cmd 0x%02x " |
2650 | "check condition, sense key = 0x%02x\n", | |
2651 | h->ctlr, c->Request.CDB[0], | |
2652 | c->err_info->SenseInfo[2]); | |
2653 | } | |
2654 | break; | |
2655 | default: | |
2656 | printk(KERN_WARNING "cciss%d: cmd 0x%02x" | |
2657 | "scsi status = 0x%02x\n", h->ctlr, | |
2658 | c->Request.CDB[0], c->err_info->ScsiStatus); | |
2659 | break; | |
2660 | } | |
2661 | return IO_ERROR; | |
2662 | } | |
2663 | ||
789a424a | 2664 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 | 2665 | { |
5390cfc3 | 2666 | int return_status = IO_OK; |
7c832835 | 2667 | |
789a424a | 2668 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
2669 | return IO_OK; | |
5390cfc3 | 2670 | |
2671 | switch (c->err_info->CommandStatus) { | |
2672 | case CMD_TARGET_STATUS: | |
3c2ab402 | 2673 | return_status = check_target_status(h, c); |
5390cfc3 | 2674 | break; |
2675 | case CMD_DATA_UNDERRUN: | |
2676 | case CMD_DATA_OVERRUN: | |
2677 | /* expected for inquiry and report lun commands */ | |
2678 | break; | |
2679 | case CMD_INVALID: | |
789a424a | 2680 | printk(KERN_WARNING "cciss: cmd 0x%02x is " |
5390cfc3 | 2681 | "reported invalid\n", c->Request.CDB[0]); |
2682 | return_status = IO_ERROR; | |
2683 | break; | |
2684 | case CMD_PROTOCOL_ERR: | |
2685 | printk(KERN_WARNING "cciss: cmd 0x%02x has " | |
2686 | "protocol error \n", c->Request.CDB[0]); | |
2687 | return_status = IO_ERROR; | |
2688 | break; | |
2689 | case CMD_HARDWARE_ERR: | |
2690 | printk(KERN_WARNING "cciss: cmd 0x%02x had " | |
2691 | " hardware error\n", c->Request.CDB[0]); | |
2692 | return_status = IO_ERROR; | |
2693 | break; | |
2694 | case CMD_CONNECTION_LOST: | |
2695 | printk(KERN_WARNING "cciss: cmd 0x%02x had " | |
2696 | "connection lost\n", c->Request.CDB[0]); | |
2697 | return_status = IO_ERROR; | |
2698 | break; | |
2699 | case CMD_ABORTED: | |
2700 | printk(KERN_WARNING "cciss: cmd 0x%02x was " | |
2701 | "aborted\n", c->Request.CDB[0]); | |
2702 | return_status = IO_ERROR; | |
2703 | break; | |
2704 | case CMD_ABORT_FAILED: | |
2705 | printk(KERN_WARNING "cciss: cmd 0x%02x reports " | |
2706 | "abort failed\n", c->Request.CDB[0]); | |
2707 | return_status = IO_ERROR; | |
2708 | break; | |
2709 | case CMD_UNSOLICITED_ABORT: | |
2710 | printk(KERN_WARNING | |
2711 | "cciss%d: unsolicited abort 0x%02x\n", h->ctlr, | |
2712 | c->Request.CDB[0]); | |
789a424a | 2713 | return_status = IO_NEEDS_RETRY; |
5390cfc3 | 2714 | break; |
2715 | default: | |
2716 | printk(KERN_WARNING "cciss: cmd 0x%02x returned " | |
2717 | "unknown status %x\n", c->Request.CDB[0], | |
2718 | c->err_info->CommandStatus); | |
2719 | return_status = IO_ERROR; | |
7c832835 | 2720 | } |
789a424a | 2721 | return return_status; |
2722 | } | |
2723 | ||
2724 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, | |
2725 | int attempt_retry) | |
2726 | { | |
2727 | DECLARE_COMPLETION_ONSTACK(wait); | |
2728 | u64bit buff_dma_handle; | |
789a424a | 2729 | int return_status = IO_OK; |
2730 | ||
2731 | resend_cmd2: | |
2732 | c->waiting = &wait; | |
664a717d | 2733 | enqueue_cmd_and_start_io(h, c); |
789a424a | 2734 | |
2735 | wait_for_completion(&wait); | |
2736 | ||
2737 | if (c->err_info->CommandStatus == 0 || !attempt_retry) | |
2738 | goto command_done; | |
2739 | ||
2740 | return_status = process_sendcmd_error(h, c); | |
2741 | ||
2742 | if (return_status == IO_NEEDS_RETRY && | |
2743 | c->retry_count < MAX_CMD_RETRIES) { | |
2744 | printk(KERN_WARNING "cciss%d: retrying 0x%02x\n", h->ctlr, | |
2745 | c->Request.CDB[0]); | |
2746 | c->retry_count++; | |
2747 | /* erase the old error information */ | |
2748 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2749 | return_status = IO_OK; | |
2750 | INIT_COMPLETION(wait); | |
2751 | goto resend_cmd2; | |
2752 | } | |
5390cfc3 | 2753 | |
2754 | command_done: | |
1da177e4 | 2755 | /* unlock the buffers from DMA */ |
bb2a37bf MM |
2756 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2757 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
7c832835 BH |
2758 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
2759 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); | |
5390cfc3 | 2760 | return return_status; |
2761 | } | |
2762 | ||
b57695fe | 2763 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
2764 | __u8 page_code, unsigned char scsi3addr[], | |
2765 | int cmd_type) | |
5390cfc3 | 2766 | { |
2767 | ctlr_info_t *h = hba[ctlr]; | |
2768 | CommandList_struct *c; | |
2769 | int return_status; | |
2770 | ||
2771 | c = cmd_alloc(h, 0); | |
2772 | if (!c) | |
2773 | return -ENOMEM; | |
b57695fe | 2774 | return_status = fill_cmd(c, cmd, ctlr, buff, size, page_code, |
2775 | scsi3addr, cmd_type); | |
5390cfc3 | 2776 | if (return_status == IO_OK) |
789a424a | 2777 | return_status = sendcmd_withirq_core(h, c, 1); |
2778 | ||
1da177e4 | 2779 | cmd_free(h, c, 0); |
7c832835 | 2780 | return return_status; |
1da177e4 | 2781 | } |
7c832835 | 2782 | |
1da177e4 | 2783 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
7b838bde | 2784 | sector_t total_size, |
7c832835 BH |
2785 | unsigned int block_size, |
2786 | InquiryData_struct *inq_buff, | |
2787 | drive_info_struct *drv) | |
1da177e4 LT |
2788 | { |
2789 | int return_code; | |
00988a35 | 2790 | unsigned long t; |
b57695fe | 2791 | unsigned char scsi3addr[8]; |
00988a35 | 2792 | |
1da177e4 | 2793 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
b57695fe | 2794 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
2795 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buff, |
2796 | sizeof(*inq_buff), 0xC1, scsi3addr, TYPE_CMD); | |
1da177e4 | 2797 | if (return_code == IO_OK) { |
7c832835 | 2798 | if (inq_buff->data_byte[8] == 0xFF) { |
1da177e4 | 2799 | printk(KERN_WARNING |
7c832835 BH |
2800 | "cciss: reading geometry failed, volume " |
2801 | "does not support reading geometry\n"); | |
1da177e4 | 2802 | drv->heads = 255; |
b028461d | 2803 | drv->sectors = 32; /* Sectors per track */ |
7f42d3b8 | 2804 | drv->cylinders = total_size + 1; |
89f97ad1 | 2805 | drv->raid_level = RAID_UNKNOWN; |
1da177e4 | 2806 | } else { |
1da177e4 LT |
2807 | drv->heads = inq_buff->data_byte[6]; |
2808 | drv->sectors = inq_buff->data_byte[7]; | |
2809 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
2810 | drv->cylinders += inq_buff->data_byte[5]; | |
2811 | drv->raid_level = inq_buff->data_byte[8]; | |
3f7705ea MW |
2812 | } |
2813 | drv->block_size = block_size; | |
97c06978 | 2814 | drv->nr_blocks = total_size + 1; |
3f7705ea MW |
2815 | t = drv->heads * drv->sectors; |
2816 | if (t > 1) { | |
97c06978 MMOD |
2817 | sector_t real_size = total_size + 1; |
2818 | unsigned long rem = sector_div(real_size, t); | |
3f7705ea | 2819 | if (rem) |
97c06978 MMOD |
2820 | real_size++; |
2821 | drv->cylinders = real_size; | |
1da177e4 | 2822 | } |
7c832835 | 2823 | } else { /* Get geometry failed */ |
1da177e4 LT |
2824 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
2825 | } | |
1da177e4 | 2826 | } |
7c832835 | 2827 | |
1da177e4 | 2828 | static void |
7b838bde | 2829 | cciss_read_capacity(int ctlr, int logvol, sector_t *total_size, |
7c832835 | 2830 | unsigned int *block_size) |
1da177e4 | 2831 | { |
00988a35 | 2832 | ReadCapdata_struct *buf; |
1da177e4 | 2833 | int return_code; |
b57695fe | 2834 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2835 | |
2836 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); | |
2837 | if (!buf) { | |
00988a35 MMOD |
2838 | printk(KERN_WARNING "cciss: out of memory\n"); |
2839 | return; | |
2840 | } | |
1aebe187 | 2841 | |
b57695fe | 2842 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
2843 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, ctlr, buf, |
2844 | sizeof(ReadCapdata_struct), 0, scsi3addr, TYPE_CMD); | |
1da177e4 | 2845 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2846 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
2847 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
7c832835 | 2848 | } else { /* read capacity command failed */ |
1da177e4 LT |
2849 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
2850 | *total_size = 0; | |
2851 | *block_size = BLOCK_SIZE; | |
2852 | } | |
00988a35 | 2853 | kfree(buf); |
00988a35 MMOD |
2854 | } |
2855 | ||
7b838bde SC |
2856 | static void cciss_read_capacity_16(int ctlr, int logvol, |
2857 | sector_t *total_size, unsigned int *block_size) | |
00988a35 MMOD |
2858 | { |
2859 | ReadCapdata_struct_16 *buf; | |
2860 | int return_code; | |
b57695fe | 2861 | unsigned char scsi3addr[8]; |
1aebe187 MK |
2862 | |
2863 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); | |
2864 | if (!buf) { | |
00988a35 MMOD |
2865 | printk(KERN_WARNING "cciss: out of memory\n"); |
2866 | return; | |
2867 | } | |
1aebe187 | 2868 | |
b57695fe | 2869 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
7b838bde SC |
2870 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, |
2871 | ctlr, buf, sizeof(ReadCapdata_struct_16), | |
2872 | 0, scsi3addr, TYPE_CMD); | |
00988a35 | 2873 | if (return_code == IO_OK) { |
4c1f2b31 AV |
2874 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
2875 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); | |
00988a35 MMOD |
2876 | } else { /* read capacity command failed */ |
2877 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
2878 | *total_size = 0; | |
2879 | *block_size = BLOCK_SIZE; | |
2880 | } | |
7b92aadf | 2881 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
97c06978 | 2882 | (unsigned long long)*total_size+1, *block_size); |
00988a35 | 2883 | kfree(buf); |
1da177e4 LT |
2884 | } |
2885 | ||
1da177e4 LT |
2886 | static int cciss_revalidate(struct gendisk *disk) |
2887 | { | |
2888 | ctlr_info_t *h = get_host(disk); | |
2889 | drive_info_struct *drv = get_drv(disk); | |
2890 | int logvol; | |
7c832835 | 2891 | int FOUND = 0; |
1da177e4 | 2892 | unsigned int block_size; |
00988a35 | 2893 | sector_t total_size; |
1da177e4 LT |
2894 | InquiryData_struct *inq_buff = NULL; |
2895 | ||
7c832835 | 2896 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
9cef0d2f | 2897 | if (memcmp(h->drv[logvol]->LunID, drv->LunID, |
39ccf9a6 | 2898 | sizeof(drv->LunID)) == 0) { |
7c832835 | 2899 | FOUND = 1; |
1da177e4 LT |
2900 | break; |
2901 | } | |
2902 | } | |
2903 | ||
7c832835 BH |
2904 | if (!FOUND) |
2905 | return 1; | |
1da177e4 | 2906 | |
7c832835 BH |
2907 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
2908 | if (inq_buff == NULL) { | |
2909 | printk(KERN_WARNING "cciss: out of memory\n"); | |
7c832835 BH |
2910 | return 1; |
2911 | } | |
00988a35 | 2912 | if (h->cciss_read == CCISS_READ_10) { |
7b838bde | 2913 | cciss_read_capacity(h->ctlr, logvol, |
00988a35 MMOD |
2914 | &total_size, &block_size); |
2915 | } else { | |
7b838bde | 2916 | cciss_read_capacity_16(h->ctlr, logvol, |
00988a35 MMOD |
2917 | &total_size, &block_size); |
2918 | } | |
7b838bde | 2919 | cciss_geometry_inquiry(h->ctlr, logvol, total_size, block_size, |
7c832835 | 2920 | inq_buff, drv); |
1da177e4 | 2921 | |
e1defc4f | 2922 | blk_queue_logical_block_size(drv->queue, drv->block_size); |
1da177e4 LT |
2923 | set_capacity(disk, drv->nr_blocks); |
2924 | ||
1da177e4 LT |
2925 | kfree(inq_buff); |
2926 | return 0; | |
2927 | } | |
2928 | ||
1da177e4 LT |
2929 | /* |
2930 | * Map (physical) PCI mem into (virtual) kernel space | |
2931 | */ | |
2932 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2933 | { | |
7c832835 BH |
2934 | ulong page_base = ((ulong) base) & PAGE_MASK; |
2935 | ulong page_offs = ((ulong) base) - page_base; | |
2936 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); | |
1da177e4 | 2937 | |
7c832835 | 2938 | return page_remapped ? (page_remapped + page_offs) : NULL; |
1da177e4 LT |
2939 | } |
2940 | ||
7c832835 BH |
2941 | /* |
2942 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2943 | * the Q to wait for completion. | |
2944 | */ | |
2945 | static void start_io(ctlr_info_t *h) | |
1da177e4 LT |
2946 | { |
2947 | CommandList_struct *c; | |
7c832835 | 2948 | |
8a3173de JA |
2949 | while (!hlist_empty(&h->reqQ)) { |
2950 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); | |
1da177e4 LT |
2951 | /* can't do anything if fifo is full */ |
2952 | if ((h->access.fifo_full(h))) { | |
2953 | printk(KERN_WARNING "cciss: fifo full\n"); | |
2954 | break; | |
2955 | } | |
2956 | ||
7c832835 | 2957 | /* Get the first entry from the Request Q */ |
8a3173de | 2958 | removeQ(c); |
1da177e4 | 2959 | h->Qdepth--; |
7c832835 BH |
2960 | |
2961 | /* Tell the controller execute command */ | |
1da177e4 | 2962 | h->access.submit_command(h, c); |
7c832835 BH |
2963 | |
2964 | /* Put job onto the completed Q */ | |
8a3173de | 2965 | addQ(&h->cmpQ, c); |
1da177e4 LT |
2966 | } |
2967 | } | |
7c832835 | 2968 | |
1da177e4 LT |
2969 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
2970 | /* Zeros out the error record and then resends the command back */ | |
2971 | /* to the controller */ | |
7c832835 | 2972 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
1da177e4 LT |
2973 | { |
2974 | /* erase the old error information */ | |
2975 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2976 | ||
2977 | /* add it to software queue and then send it to the controller */ | |
8a3173de | 2978 | addQ(&h->reqQ, c); |
1da177e4 | 2979 | h->Qdepth++; |
7c832835 | 2980 | if (h->Qdepth > h->maxQsinceinit) |
1da177e4 LT |
2981 | h->maxQsinceinit = h->Qdepth; |
2982 | ||
2983 | start_io(h); | |
2984 | } | |
a9925a06 | 2985 | |
1a614f50 SC |
2986 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
2987 | unsigned int msg_byte, unsigned int host_byte, | |
2988 | unsigned int driver_byte) | |
2989 | { | |
2990 | /* inverse of macros in scsi.h */ | |
2991 | return (scsi_status_byte & 0xff) | | |
2992 | ((msg_byte & 0xff) << 8) | | |
2993 | ((host_byte & 0xff) << 16) | | |
2994 | ((driver_byte & 0xff) << 24); | |
2995 | } | |
2996 | ||
0a9279cc MM |
2997 | static inline int evaluate_target_status(ctlr_info_t *h, |
2998 | CommandList_struct *cmd, int *retry_cmd) | |
03bbfee5 MMOD |
2999 | { |
3000 | unsigned char sense_key; | |
1a614f50 SC |
3001 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
3002 | int error_value; | |
3003 | ||
0a9279cc | 3004 | *retry_cmd = 0; |
1a614f50 SC |
3005 | /* If we get in here, it means we got "target status", that is, scsi status */ |
3006 | status_byte = cmd->err_info->ScsiStatus; | |
3007 | driver_byte = DRIVER_OK; | |
3008 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ | |
3009 | ||
33659ebb | 3010 | if (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) |
1a614f50 SC |
3011 | host_byte = DID_PASSTHROUGH; |
3012 | else | |
3013 | host_byte = DID_OK; | |
3014 | ||
3015 | error_value = make_status_bytes(status_byte, msg_byte, | |
3016 | host_byte, driver_byte); | |
03bbfee5 | 3017 | |
1a614f50 | 3018 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
33659ebb | 3019 | if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) |
03bbfee5 MMOD |
3020 | printk(KERN_WARNING "cciss: cmd %p " |
3021 | "has SCSI Status 0x%x\n", | |
3022 | cmd, cmd->err_info->ScsiStatus); | |
1a614f50 | 3023 | return error_value; |
03bbfee5 MMOD |
3024 | } |
3025 | ||
3026 | /* check the sense key */ | |
3027 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; | |
3028 | /* no status or recovered error */ | |
33659ebb CH |
3029 | if (((sense_key == 0x0) || (sense_key == 0x1)) && |
3030 | (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC)) | |
1a614f50 | 3031 | error_value = 0; |
03bbfee5 | 3032 | |
0a9279cc | 3033 | if (check_for_unit_attention(h, cmd)) { |
33659ebb | 3034 | *retry_cmd = !(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC); |
0a9279cc MM |
3035 | return 0; |
3036 | } | |
3037 | ||
33659ebb CH |
3038 | /* Not SG_IO or similar? */ |
3039 | if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) { | |
1a614f50 | 3040 | if (error_value != 0) |
03bbfee5 MMOD |
3041 | printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" |
3042 | " sense key = 0x%x\n", cmd, sense_key); | |
1a614f50 | 3043 | return error_value; |
03bbfee5 MMOD |
3044 | } |
3045 | ||
3046 | /* SG_IO or similar, copy sense data back */ | |
3047 | if (cmd->rq->sense) { | |
3048 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) | |
3049 | cmd->rq->sense_len = cmd->err_info->SenseLen; | |
3050 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, | |
3051 | cmd->rq->sense_len); | |
3052 | } else | |
3053 | cmd->rq->sense_len = 0; | |
3054 | ||
1a614f50 | 3055 | return error_value; |
03bbfee5 MMOD |
3056 | } |
3057 | ||
7c832835 | 3058 | /* checks the status of the job and calls complete buffers to mark all |
a9925a06 JA |
3059 | * buffers for the completed job. Note that this function does not need |
3060 | * to hold the hba/queue lock. | |
7c832835 BH |
3061 | */ |
3062 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, | |
3063 | int timeout) | |
1da177e4 | 3064 | { |
1da177e4 | 3065 | int retry_cmd = 0; |
198b7660 MMOD |
3066 | struct request *rq = cmd->rq; |
3067 | ||
3068 | rq->errors = 0; | |
7c832835 | 3069 | |
1da177e4 | 3070 | if (timeout) |
1a614f50 | 3071 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
1da177e4 | 3072 | |
d38ae168 MMOD |
3073 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
3074 | goto after_error_processing; | |
7c832835 | 3075 | |
d38ae168 | 3076 | switch (cmd->err_info->CommandStatus) { |
d38ae168 | 3077 | case CMD_TARGET_STATUS: |
0a9279cc | 3078 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
d38ae168 MMOD |
3079 | break; |
3080 | case CMD_DATA_UNDERRUN: | |
33659ebb | 3081 | if (cmd->rq->cmd_type == REQ_TYPE_FS) { |
03bbfee5 MMOD |
3082 | printk(KERN_WARNING "cciss: cmd %p has" |
3083 | " completed with data underrun " | |
3084 | "reported\n", cmd); | |
c3a4d78c | 3085 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
03bbfee5 | 3086 | } |
d38ae168 MMOD |
3087 | break; |
3088 | case CMD_DATA_OVERRUN: | |
33659ebb | 3089 | if (cmd->rq->cmd_type == REQ_TYPE_FS) |
03bbfee5 MMOD |
3090 | printk(KERN_WARNING "cciss: cmd %p has" |
3091 | " completed with data overrun " | |
3092 | "reported\n", cmd); | |
d38ae168 MMOD |
3093 | break; |
3094 | case CMD_INVALID: | |
3095 | printk(KERN_WARNING "cciss: cmd %p is " | |
3096 | "reported invalid\n", cmd); | |
1a614f50 SC |
3097 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3098 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3099 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3100 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3101 | break; |
3102 | case CMD_PROTOCOL_ERR: | |
3103 | printk(KERN_WARNING "cciss: cmd %p has " | |
3104 | "protocol error \n", cmd); | |
1a614f50 SC |
3105 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3106 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3107 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3108 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3109 | break; |
3110 | case CMD_HARDWARE_ERR: | |
3111 | printk(KERN_WARNING "cciss: cmd %p had " | |
3112 | " hardware error\n", cmd); | |
1a614f50 SC |
3113 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3114 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3115 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3116 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3117 | break; |
3118 | case CMD_CONNECTION_LOST: | |
3119 | printk(KERN_WARNING "cciss: cmd %p had " | |
3120 | "connection lost\n", cmd); | |
1a614f50 SC |
3121 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3122 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3123 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3124 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3125 | break; |
3126 | case CMD_ABORTED: | |
3127 | printk(KERN_WARNING "cciss: cmd %p was " | |
3128 | "aborted\n", cmd); | |
1a614f50 SC |
3129 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3130 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3131 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3132 | DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
3133 | break; |
3134 | case CMD_ABORT_FAILED: | |
3135 | printk(KERN_WARNING "cciss: cmd %p reports " | |
3136 | "abort failed\n", cmd); | |
1a614f50 SC |
3137 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3138 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3139 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3140 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3141 | break; |
3142 | case CMD_UNSOLICITED_ABORT: | |
3143 | printk(KERN_WARNING "cciss%d: unsolicited " | |
3144 | "abort %p\n", h->ctlr, cmd); | |
3145 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
3146 | retry_cmd = 1; | |
3147 | printk(KERN_WARNING | |
3148 | "cciss%d: retrying %p\n", h->ctlr, cmd); | |
3149 | cmd->retry_count++; | |
3150 | } else | |
3151 | printk(KERN_WARNING | |
3152 | "cciss%d: %p retried too " | |
3153 | "many times\n", h->ctlr, cmd); | |
1a614f50 SC |
3154 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3155 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3156 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3157 | DID_PASSTHROUGH : DID_ABORT); | |
d38ae168 MMOD |
3158 | break; |
3159 | case CMD_TIMEOUT: | |
3160 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); | |
1a614f50 SC |
3161 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3162 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3163 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3164 | DID_PASSTHROUGH : DID_ERROR); | |
d38ae168 MMOD |
3165 | break; |
3166 | default: | |
3167 | printk(KERN_WARNING "cciss: cmd %p returned " | |
3168 | "unknown status %x\n", cmd, | |
3169 | cmd->err_info->CommandStatus); | |
1a614f50 SC |
3170 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
3171 | cmd->err_info->CommandStatus, DRIVER_OK, | |
33659ebb CH |
3172 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
3173 | DID_PASSTHROUGH : DID_ERROR); | |
1da177e4 | 3174 | } |
d38ae168 MMOD |
3175 | |
3176 | after_error_processing: | |
3177 | ||
1da177e4 | 3178 | /* We need to return this command */ |
7c832835 BH |
3179 | if (retry_cmd) { |
3180 | resend_cciss_cmd(h, cmd); | |
1da177e4 | 3181 | return; |
7c832835 | 3182 | } |
03bbfee5 | 3183 | cmd->rq->completion_data = cmd; |
a9925a06 | 3184 | blk_complete_request(cmd->rq); |
1da177e4 LT |
3185 | } |
3186 | ||
0c2b3908 MM |
3187 | static inline u32 cciss_tag_contains_index(u32 tag) |
3188 | { | |
5e216153 | 3189 | #define DIRECT_LOOKUP_BIT 0x10 |
0c2b3908 MM |
3190 | return tag & DIRECT_LOOKUP_BIT; |
3191 | } | |
3192 | ||
3193 | static inline u32 cciss_tag_to_index(u32 tag) | |
3194 | { | |
5e216153 | 3195 | #define DIRECT_LOOKUP_SHIFT 5 |
0c2b3908 MM |
3196 | return tag >> DIRECT_LOOKUP_SHIFT; |
3197 | } | |
3198 | ||
3199 | static inline u32 cciss_tag_discard_error_bits(u32 tag) | |
3200 | { | |
3201 | #define CCISS_ERROR_BITS 0x03 | |
3202 | return tag & ~CCISS_ERROR_BITS; | |
3203 | } | |
3204 | ||
3205 | static inline void cciss_mark_tag_indexed(u32 *tag) | |
3206 | { | |
3207 | *tag |= DIRECT_LOOKUP_BIT; | |
3208 | } | |
3209 | ||
3210 | static inline void cciss_set_tag_index(u32 *tag, u32 index) | |
3211 | { | |
3212 | *tag |= (index << DIRECT_LOOKUP_SHIFT); | |
3213 | } | |
3214 | ||
7c832835 BH |
3215 | /* |
3216 | * Get a request and submit it to the controller. | |
1da177e4 | 3217 | */ |
165125e1 | 3218 | static void do_cciss_request(struct request_queue *q) |
1da177e4 | 3219 | { |
7c832835 | 3220 | ctlr_info_t *h = q->queuedata; |
1da177e4 | 3221 | CommandList_struct *c; |
00988a35 MMOD |
3222 | sector_t start_blk; |
3223 | int seg; | |
1da177e4 LT |
3224 | struct request *creq; |
3225 | u64bit temp64; | |
5c07a311 DB |
3226 | struct scatterlist *tmp_sg; |
3227 | SGDescriptor_struct *curr_sg; | |
1da177e4 LT |
3228 | drive_info_struct *drv; |
3229 | int i, dir; | |
5c07a311 DB |
3230 | int sg_index = 0; |
3231 | int chained = 0; | |
1da177e4 LT |
3232 | |
3233 | /* We call start_io here in case there is a command waiting on the | |
3234 | * queue that has not been sent. | |
7c832835 | 3235 | */ |
1da177e4 LT |
3236 | if (blk_queue_plugged(q)) |
3237 | goto startio; | |
3238 | ||
7c832835 | 3239 | queue: |
9934c8c0 | 3240 | creq = blk_peek_request(q); |
1da177e4 LT |
3241 | if (!creq) |
3242 | goto startio; | |
3243 | ||
5c07a311 | 3244 | BUG_ON(creq->nr_phys_segments > h->maxsgentries); |
1da177e4 | 3245 | |
7c832835 | 3246 | if ((c = cmd_alloc(h, 1)) == NULL) |
1da177e4 LT |
3247 | goto full; |
3248 | ||
9934c8c0 | 3249 | blk_start_request(creq); |
1da177e4 | 3250 | |
5c07a311 | 3251 | tmp_sg = h->scatter_list[c->cmdindex]; |
1da177e4 LT |
3252 | spin_unlock_irq(q->queue_lock); |
3253 | ||
3254 | c->cmd_type = CMD_RWREQ; | |
3255 | c->rq = creq; | |
7c832835 BH |
3256 | |
3257 | /* fill in the request */ | |
1da177e4 | 3258 | drv = creq->rq_disk->private_data; |
b028461d | 3259 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
33079b21 MM |
3260 | /* got command from pool, so use the command block index instead */ |
3261 | /* for direct lookups. */ | |
3262 | /* The first 2 bits are reserved for controller error reporting. */ | |
0c2b3908 MM |
3263 | cciss_set_tag_index(&c->Header.Tag.lower, c->cmdindex); |
3264 | cciss_mark_tag_indexed(&c->Header.Tag.lower); | |
39ccf9a6 | 3265 | memcpy(&c->Header.LUN, drv->LunID, sizeof(drv->LunID)); |
b028461d | 3266 | c->Request.CDBLen = 10; /* 12 byte commands not in FW yet; */ |
3267 | c->Request.Type.Type = TYPE_CMD; /* It is a command. */ | |
7c832835 BH |
3268 | c->Request.Type.Attribute = ATTR_SIMPLE; |
3269 | c->Request.Type.Direction = | |
a52de245 | 3270 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
b028461d | 3271 | c->Request.Timeout = 0; /* Don't time out */ |
7c832835 | 3272 | c->Request.CDB[0] = |
00988a35 | 3273 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
83096ebf | 3274 | start_blk = blk_rq_pos(creq); |
1da177e4 | 3275 | #ifdef CCISS_DEBUG |
83096ebf TH |
3276 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", |
3277 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); | |
7c832835 | 3278 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3279 | |
5c07a311 | 3280 | sg_init_table(tmp_sg, h->maxsgentries); |
1da177e4 LT |
3281 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
3282 | ||
7c832835 | 3283 | /* get the DMA records for the setup */ |
1da177e4 LT |
3284 | if (c->Request.Type.Direction == XFER_READ) |
3285 | dir = PCI_DMA_FROMDEVICE; | |
3286 | else | |
3287 | dir = PCI_DMA_TODEVICE; | |
3288 | ||
5c07a311 DB |
3289 | curr_sg = c->SG; |
3290 | sg_index = 0; | |
3291 | chained = 0; | |
3292 | ||
7c832835 | 3293 | for (i = 0; i < seg; i++) { |
5c07a311 DB |
3294 | if (((sg_index+1) == (h->max_cmd_sgentries)) && |
3295 | !chained && ((seg - i) > 1)) { | |
5c07a311 | 3296 | /* Point to next chain block. */ |
dccc9b56 | 3297 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
5c07a311 DB |
3298 | sg_index = 0; |
3299 | chained = 1; | |
3300 | } | |
3301 | curr_sg[sg_index].Len = tmp_sg[i].length; | |
45711f1a | 3302 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
5c07a311 DB |
3303 | tmp_sg[i].offset, |
3304 | tmp_sg[i].length, dir); | |
3305 | curr_sg[sg_index].Addr.lower = temp64.val32.lower; | |
3306 | curr_sg[sg_index].Addr.upper = temp64.val32.upper; | |
3307 | curr_sg[sg_index].Ext = 0; /* we are not chaining */ | |
5c07a311 | 3308 | ++sg_index; |
1da177e4 | 3309 | } |
d45033ef SC |
3310 | if (chained) |
3311 | cciss_map_sg_chain_block(h, c, h->cmd_sg_list[c->cmdindex], | |
3312 | (seg - (h->max_cmd_sgentries - 1)) * | |
3313 | sizeof(SGDescriptor_struct)); | |
5c07a311 | 3314 | |
7c832835 BH |
3315 | /* track how many SG entries we are using */ |
3316 | if (seg > h->maxSG) | |
3317 | h->maxSG = seg; | |
1da177e4 LT |
3318 | |
3319 | #ifdef CCISS_DEBUG | |
5c07a311 DB |
3320 | printk(KERN_DEBUG "cciss: Submitting %ld sectors in %d segments " |
3321 | "chained[%d]\n", | |
3322 | blk_rq_sectors(creq), seg, chained); | |
7c832835 | 3323 | #endif /* CCISS_DEBUG */ |
1da177e4 | 3324 | |
5e216153 MM |
3325 | c->Header.SGTotal = seg + chained; |
3326 | if (seg <= h->max_cmd_sgentries) | |
3327 | c->Header.SGList = c->Header.SGTotal; | |
3328 | else | |
5c07a311 | 3329 | c->Header.SGList = h->max_cmd_sgentries; |
5e216153 | 3330 | set_performant_mode(h, c); |
5c07a311 | 3331 | |
33659ebb | 3332 | if (likely(creq->cmd_type == REQ_TYPE_FS)) { |
03bbfee5 MMOD |
3333 | if(h->cciss_read == CCISS_READ_10) { |
3334 | c->Request.CDB[1] = 0; | |
b028461d | 3335 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; /* MSB */ |
03bbfee5 MMOD |
3336 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; |
3337 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; | |
3338 | c->Request.CDB[5] = start_blk & 0xff; | |
b028461d | 3339 | c->Request.CDB[6] = 0; /* (sect >> 24) & 0xff; MSB */ |
83096ebf TH |
3340 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
3341 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3342 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
3343 | } else { | |
582539e5 RD |
3344 | u32 upper32 = upper_32_bits(start_blk); |
3345 | ||
03bbfee5 MMOD |
3346 | c->Request.CDBLen = 16; |
3347 | c->Request.CDB[1]= 0; | |
b028461d | 3348 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; /* MSB */ |
582539e5 RD |
3349 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; |
3350 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; | |
3351 | c->Request.CDB[5]= upper32 & 0xff; | |
03bbfee5 MMOD |
3352 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
3353 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; | |
3354 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; | |
3355 | c->Request.CDB[9]= start_blk & 0xff; | |
83096ebf TH |
3356 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
3357 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; | |
3358 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; | |
3359 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; | |
03bbfee5 MMOD |
3360 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
3361 | } | |
33659ebb | 3362 | } else if (creq->cmd_type == REQ_TYPE_BLOCK_PC) { |
03bbfee5 MMOD |
3363 | c->Request.CDBLen = creq->cmd_len; |
3364 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); | |
00988a35 | 3365 | } else { |
03bbfee5 MMOD |
3366 | printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); |
3367 | BUG(); | |
00988a35 | 3368 | } |
1da177e4 LT |
3369 | |
3370 | spin_lock_irq(q->queue_lock); | |
3371 | ||
8a3173de | 3372 | addQ(&h->reqQ, c); |
1da177e4 | 3373 | h->Qdepth++; |
7c832835 BH |
3374 | if (h->Qdepth > h->maxQsinceinit) |
3375 | h->maxQsinceinit = h->Qdepth; | |
1da177e4 LT |
3376 | |
3377 | goto queue; | |
00988a35 | 3378 | full: |
1da177e4 | 3379 | blk_stop_queue(q); |
00988a35 | 3380 | startio: |
1da177e4 LT |
3381 | /* We will already have the driver lock here so not need |
3382 | * to lock it. | |
7c832835 | 3383 | */ |
1da177e4 LT |
3384 | start_io(h); |
3385 | } | |
3386 | ||
3da8b713 | 3387 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
3388 | { | |
3da8b713 | 3389 | return h->access.command_completed(h); |
3da8b713 | 3390 | } |
3391 | ||
3392 | static inline int interrupt_pending(ctlr_info_t *h) | |
3393 | { | |
3da8b713 | 3394 | return h->access.intr_pending(h); |
3da8b713 | 3395 | } |
3396 | ||
3397 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
3398 | { | |
2cf3af1c MM |
3399 | return !(h->msi_vector || h->msix_vector) && |
3400 | ((h->access.intr_pending(h) == 0) || | |
3401 | (h->interrupts_enabled == 0)); | |
3da8b713 | 3402 | } |
3403 | ||
0c2b3908 MM |
3404 | static inline int bad_tag(ctlr_info_t *h, u32 tag_index, |
3405 | u32 raw_tag) | |
1da177e4 | 3406 | { |
0c2b3908 MM |
3407 | if (unlikely(tag_index >= h->nr_cmds)) { |
3408 | dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); | |
3409 | return 1; | |
3410 | } | |
3411 | return 0; | |
3412 | } | |
3413 | ||
3414 | static inline void finish_cmd(ctlr_info_t *h, CommandList_struct *c, | |
3415 | u32 raw_tag) | |
3416 | { | |
3417 | removeQ(c); | |
3418 | if (likely(c->cmd_type == CMD_RWREQ)) | |
3419 | complete_command(h, c, 0); | |
3420 | else if (c->cmd_type == CMD_IOCTL_PEND) | |
3421 | complete(c->waiting); | |
3422 | #ifdef CONFIG_CISS_SCSI_TAPE | |
3423 | else if (c->cmd_type == CMD_SCSI) | |
3424 | complete_scsi_command(c, 0, raw_tag); | |
3425 | #endif | |
3426 | } | |
3427 | ||
29979a71 MM |
3428 | static inline u32 next_command(ctlr_info_t *h) |
3429 | { | |
3430 | u32 a; | |
3431 | ||
3432 | if (unlikely(h->transMethod != CFGTBL_Trans_Performant)) | |
3433 | return h->access.command_completed(h); | |
3434 | ||
3435 | if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { | |
3436 | a = *(h->reply_pool_head); /* Next cmd in ring buffer */ | |
3437 | (h->reply_pool_head)++; | |
3438 | h->commands_outstanding--; | |
3439 | } else { | |
3440 | a = FIFO_EMPTY; | |
3441 | } | |
3442 | /* Check for wraparound */ | |
3443 | if (h->reply_pool_head == (h->reply_pool + h->max_commands)) { | |
3444 | h->reply_pool_head = h->reply_pool; | |
3445 | h->reply_pool_wraparound ^= 1; | |
3446 | } | |
3447 | return a; | |
3448 | } | |
3449 | ||
0c2b3908 MM |
3450 | /* process completion of an indexed ("direct lookup") command */ |
3451 | static inline u32 process_indexed_cmd(ctlr_info_t *h, u32 raw_tag) | |
3452 | { | |
3453 | u32 tag_index; | |
1da177e4 | 3454 | CommandList_struct *c; |
0c2b3908 MM |
3455 | |
3456 | tag_index = cciss_tag_to_index(raw_tag); | |
3457 | if (bad_tag(h, tag_index, raw_tag)) | |
5e216153 | 3458 | return next_command(h); |
0c2b3908 MM |
3459 | c = h->cmd_pool + tag_index; |
3460 | finish_cmd(h, c, raw_tag); | |
5e216153 | 3461 | return next_command(h); |
0c2b3908 MM |
3462 | } |
3463 | ||
3464 | /* process completion of a non-indexed command */ | |
3465 | static inline u32 process_nonindexed_cmd(ctlr_info_t *h, u32 raw_tag) | |
3466 | { | |
3467 | u32 tag; | |
3468 | CommandList_struct *c = NULL; | |
3469 | struct hlist_node *tmp; | |
3470 | __u32 busaddr_masked, tag_masked; | |
3471 | ||
3472 | tag = cciss_tag_discard_error_bits(raw_tag); | |
3473 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { | |
3474 | busaddr_masked = cciss_tag_discard_error_bits(c->busaddr); | |
3475 | tag_masked = cciss_tag_discard_error_bits(tag); | |
3476 | if (busaddr_masked == tag_masked) { | |
3477 | finish_cmd(h, c, raw_tag); | |
5e216153 | 3478 | return next_command(h); |
0c2b3908 MM |
3479 | } |
3480 | } | |
3481 | bad_tag(h, h->nr_cmds + 1, raw_tag); | |
5e216153 | 3482 | return next_command(h); |
0c2b3908 MM |
3483 | } |
3484 | ||
3485 | static irqreturn_t do_cciss_intx(int irq, void *dev_id) | |
3486 | { | |
3487 | ctlr_info_t *h = dev_id; | |
1da177e4 | 3488 | unsigned long flags; |
0c2b3908 | 3489 | u32 raw_tag; |
1da177e4 | 3490 | |
3da8b713 | 3491 | if (interrupt_not_for_us(h)) |
1da177e4 | 3492 | return IRQ_NONE; |
1da177e4 LT |
3493 | /* |
3494 | * If there are completed commands in the completion queue, | |
3495 | * we had better do something about it. | |
3496 | */ | |
3497 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 3498 | while (interrupt_pending(h)) { |
0c2b3908 MM |
3499 | raw_tag = get_next_completion(h); |
3500 | while (raw_tag != FIFO_EMPTY) { | |
3501 | if (cciss_tag_contains_index(raw_tag)) | |
3502 | raw_tag = process_indexed_cmd(h, raw_tag); | |
3503 | else | |
3504 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
3505 | } | |
3506 | } | |
33079b21 | 3507 | |
0c2b3908 MM |
3508 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
3509 | return IRQ_HANDLED; | |
3510 | } | |
33079b21 | 3511 | |
0c2b3908 MM |
3512 | /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never |
3513 | * check the interrupt pending register because it is not set. | |
3514 | */ | |
3515 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id) | |
3516 | { | |
3517 | ctlr_info_t *h = dev_id; | |
3518 | unsigned long flags; | |
3519 | u32 raw_tag; | |
8a3173de | 3520 | |
0c2b3908 MM |
3521 | if (interrupt_not_for_us(h)) |
3522 | return IRQ_NONE; | |
3523 | /* | |
3524 | * If there are completed commands in the completion queue, | |
3525 | * we had better do something about it. | |
3526 | */ | |
3527 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3528 | raw_tag = get_next_completion(h); | |
3529 | while (raw_tag != FIFO_EMPTY) { | |
3530 | if (cciss_tag_contains_index(raw_tag)) | |
3531 | raw_tag = process_indexed_cmd(h, raw_tag); | |
3532 | else | |
3533 | raw_tag = process_nonindexed_cmd(h, raw_tag); | |
1da177e4 LT |
3534 | } |
3535 | ||
1da177e4 LT |
3536 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
3537 | return IRQ_HANDLED; | |
3538 | } | |
7c832835 | 3539 | |
b368c9dd AP |
3540 | /** |
3541 | * add_to_scan_list() - add controller to rescan queue | |
3542 | * @h: Pointer to the controller. | |
3543 | * | |
3544 | * Adds the controller to the rescan queue if not already on the queue. | |
3545 | * | |
3546 | * returns 1 if added to the queue, 0 if skipped (could be on the | |
3547 | * queue already, or the controller could be initializing or shutting | |
3548 | * down). | |
3549 | **/ | |
3550 | static int add_to_scan_list(struct ctlr_info *h) | |
3551 | { | |
3552 | struct ctlr_info *test_h; | |
3553 | int found = 0; | |
3554 | int ret = 0; | |
3555 | ||
3556 | if (h->busy_initializing) | |
3557 | return 0; | |
3558 | ||
3559 | if (!mutex_trylock(&h->busy_shutting_down)) | |
3560 | return 0; | |
3561 | ||
3562 | mutex_lock(&scan_mutex); | |
3563 | list_for_each_entry(test_h, &scan_q, scan_list) { | |
3564 | if (test_h == h) { | |
3565 | found = 1; | |
3566 | break; | |
3567 | } | |
3568 | } | |
3569 | if (!found && !h->busy_scanning) { | |
3570 | INIT_COMPLETION(h->scan_wait); | |
3571 | list_add_tail(&h->scan_list, &scan_q); | |
3572 | ret = 1; | |
3573 | } | |
3574 | mutex_unlock(&scan_mutex); | |
3575 | mutex_unlock(&h->busy_shutting_down); | |
3576 | ||
3577 | return ret; | |
3578 | } | |
3579 | ||
3580 | /** | |
3581 | * remove_from_scan_list() - remove controller from rescan queue | |
3582 | * @h: Pointer to the controller. | |
3583 | * | |
3584 | * Removes the controller from the rescan queue if present. Blocks if | |
fd8489cf SC |
3585 | * the controller is currently conducting a rescan. The controller |
3586 | * can be in one of three states: | |
3587 | * 1. Doesn't need a scan | |
3588 | * 2. On the scan list, but not scanning yet (we remove it) | |
3589 | * 3. Busy scanning (and not on the list). In this case we want to wait for | |
3590 | * the scan to complete to make sure the scanning thread for this | |
3591 | * controller is completely idle. | |
b368c9dd AP |
3592 | **/ |
3593 | static void remove_from_scan_list(struct ctlr_info *h) | |
3594 | { | |
3595 | struct ctlr_info *test_h, *tmp_h; | |
b368c9dd AP |
3596 | |
3597 | mutex_lock(&scan_mutex); | |
3598 | list_for_each_entry_safe(test_h, tmp_h, &scan_q, scan_list) { | |
fd8489cf | 3599 | if (test_h == h) { /* state 2. */ |
b368c9dd AP |
3600 | list_del(&h->scan_list); |
3601 | complete_all(&h->scan_wait); | |
3602 | mutex_unlock(&scan_mutex); | |
3603 | return; | |
3604 | } | |
3605 | } | |
fd8489cf SC |
3606 | if (h->busy_scanning) { /* state 3. */ |
3607 | mutex_unlock(&scan_mutex); | |
b368c9dd | 3608 | wait_for_completion(&h->scan_wait); |
fd8489cf SC |
3609 | } else { /* state 1, nothing to do. */ |
3610 | mutex_unlock(&scan_mutex); | |
3611 | } | |
b368c9dd AP |
3612 | } |
3613 | ||
3614 | /** | |
3615 | * scan_thread() - kernel thread used to rescan controllers | |
3616 | * @data: Ignored. | |
3617 | * | |
3618 | * A kernel thread used scan for drive topology changes on | |
3619 | * controllers. The thread processes only one controller at a time | |
3620 | * using a queue. Controllers are added to the queue using | |
3621 | * add_to_scan_list() and removed from the queue either after done | |
3622 | * processing or using remove_from_scan_list(). | |
3623 | * | |
3624 | * returns 0. | |
3625 | **/ | |
0a9279cc MM |
3626 | static int scan_thread(void *data) |
3627 | { | |
b368c9dd | 3628 | struct ctlr_info *h; |
0a9279cc | 3629 | |
b368c9dd AP |
3630 | while (1) { |
3631 | set_current_state(TASK_INTERRUPTIBLE); | |
3632 | schedule(); | |
0a9279cc MM |
3633 | if (kthread_should_stop()) |
3634 | break; | |
b368c9dd AP |
3635 | |
3636 | while (1) { | |
3637 | mutex_lock(&scan_mutex); | |
3638 | if (list_empty(&scan_q)) { | |
3639 | mutex_unlock(&scan_mutex); | |
3640 | break; | |
3641 | } | |
3642 | ||
3643 | h = list_entry(scan_q.next, | |
3644 | struct ctlr_info, | |
3645 | scan_list); | |
3646 | list_del(&h->scan_list); | |
3647 | h->busy_scanning = 1; | |
3648 | mutex_unlock(&scan_mutex); | |
3649 | ||
d06dfbd2 SC |
3650 | rebuild_lun_table(h, 0, 0); |
3651 | complete_all(&h->scan_wait); | |
3652 | mutex_lock(&scan_mutex); | |
3653 | h->busy_scanning = 0; | |
3654 | mutex_unlock(&scan_mutex); | |
b368c9dd | 3655 | } |
0a9279cc | 3656 | } |
b368c9dd | 3657 | |
0a9279cc MM |
3658 | return 0; |
3659 | } | |
3660 | ||
3661 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) | |
3662 | { | |
3663 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) | |
3664 | return 0; | |
3665 | ||
3666 | switch (c->err_info->SenseInfo[12]) { | |
3667 | case STATE_CHANGED: | |
3668 | printk(KERN_WARNING "cciss%d: a state change " | |
3669 | "detected, command retried\n", h->ctlr); | |
3670 | return 1; | |
3671 | break; | |
3672 | case LUN_FAILED: | |
3673 | printk(KERN_WARNING "cciss%d: LUN failure " | |
3674 | "detected, action required\n", h->ctlr); | |
3675 | return 1; | |
3676 | break; | |
3677 | case REPORT_LUNS_CHANGED: | |
3678 | printk(KERN_WARNING "cciss%d: report LUN data " | |
3679 | "changed\n", h->ctlr); | |
da002184 SC |
3680 | /* |
3681 | * Here, we could call add_to_scan_list and wake up the scan thread, | |
3682 | * except that it's quite likely that we will get more than one | |
3683 | * REPORT_LUNS_CHANGED condition in quick succession, which means | |
3684 | * that those which occur after the first one will likely happen | |
3685 | * *during* the scan_thread's rescan. And the rescan code is not | |
3686 | * robust enough to restart in the middle, undoing what it has already | |
3687 | * done, and it's not clear that it's even possible to do this, since | |
3688 | * part of what it does is notify the block layer, which starts | |
3689 | * doing it's own i/o to read partition tables and so on, and the | |
3690 | * driver doesn't have visibility to know what might need undoing. | |
3691 | * In any event, if possible, it is horribly complicated to get right | |
3692 | * so we just don't do it for now. | |
3693 | * | |
3694 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. | |
3695 | */ | |
0a9279cc MM |
3696 | return 1; |
3697 | break; | |
3698 | case POWER_OR_RESET: | |
3699 | printk(KERN_WARNING "cciss%d: a power on " | |
3700 | "or device reset detected\n", h->ctlr); | |
3701 | return 1; | |
3702 | break; | |
3703 | case UNIT_ATTENTION_CLEARED: | |
3704 | printk(KERN_WARNING "cciss%d: unit attention " | |
3705 | "cleared by another initiator\n", h->ctlr); | |
3706 | return 1; | |
3707 | break; | |
3708 | default: | |
3709 | printk(KERN_WARNING "cciss%d: unknown " | |
3710 | "unit attention detected\n", h->ctlr); | |
3711 | return 1; | |
3712 | } | |
3713 | } | |
3714 | ||
7c832835 | 3715 | /* |
d14c4ab5 | 3716 | * We cannot read the structure directly, for portability we must use |
1da177e4 | 3717 | * the io functions. |
7c832835 | 3718 | * This is for debug only. |
1da177e4 | 3719 | */ |
7c832835 | 3720 | static void print_cfg_table(CfgTable_struct *tb) |
1da177e4 | 3721 | { |
ff5f58f0 | 3722 | #ifdef CCISS_DEBUG |
1da177e4 LT |
3723 | int i; |
3724 | char temp_name[17]; | |
3725 | ||
3726 | printk("Controller Configuration information\n"); | |
3727 | printk("------------------------------------\n"); | |
7c832835 | 3728 | for (i = 0; i < 4; i++) |
1da177e4 | 3729 | temp_name[i] = readb(&(tb->Signature[i])); |
7c832835 BH |
3730 | temp_name[4] = '\0'; |
3731 | printk(" Signature = %s\n", temp_name); | |
1da177e4 | 3732 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
7c832835 BH |
3733 | printk(" Transport methods supported = 0x%x\n", |
3734 | readl(&(tb->TransportSupport))); | |
3735 | printk(" Transport methods active = 0x%x\n", | |
3736 | readl(&(tb->TransportActive))); | |
3737 | printk(" Requested transport Method = 0x%x\n", | |
3738 | readl(&(tb->HostWrite.TransportRequest))); | |
d14c4ab5 | 3739 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
7c832835 | 3740 | readl(&(tb->HostWrite.CoalIntDelay))); |
d14c4ab5 | 3741 | printk(" Coalesce Interrupt Count = 0x%x\n", |
7c832835 BH |
3742 | readl(&(tb->HostWrite.CoalIntCount))); |
3743 | printk(" Max outstanding commands = 0x%d\n", | |
3744 | readl(&(tb->CmdsOutMax))); | |
3745 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); | |
3746 | for (i = 0; i < 16; i++) | |
1da177e4 LT |
3747 | temp_name[i] = readb(&(tb->ServerName[i])); |
3748 | temp_name[16] = '\0'; | |
3749 | printk(" Server Name = %s\n", temp_name); | |
7c832835 | 3750 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
7c832835 | 3751 | #endif /* CCISS_DEBUG */ |
ff5f58f0 | 3752 | } |
1da177e4 | 3753 | |
7c832835 | 3754 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
1da177e4 LT |
3755 | { |
3756 | int i, offset, mem_type, bar_type; | |
7c832835 | 3757 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
1da177e4 LT |
3758 | return 0; |
3759 | offset = 0; | |
7c832835 BH |
3760 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
3761 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; | |
1da177e4 LT |
3762 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
3763 | offset += 4; | |
3764 | else { | |
3765 | mem_type = pci_resource_flags(pdev, i) & | |
7c832835 | 3766 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
1da177e4 | 3767 | switch (mem_type) { |
7c832835 BH |
3768 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
3769 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
3770 | offset += 4; /* 32 bit */ | |
3771 | break; | |
3772 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
3773 | offset += 8; | |
3774 | break; | |
3775 | default: /* reserved in PCI 2.2 */ | |
3776 | printk(KERN_WARNING | |
3777 | "Base address is invalid\n"); | |
3778 | return -1; | |
1da177e4 LT |
3779 | break; |
3780 | } | |
3781 | } | |
7c832835 BH |
3782 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
3783 | return i + 1; | |
1da177e4 LT |
3784 | } |
3785 | return -1; | |
3786 | } | |
3787 | ||
5e216153 MM |
3788 | /* Fill in bucket_map[], given nsgs (the max number of |
3789 | * scatter gather elements supported) and bucket[], | |
3790 | * which is an array of 8 integers. The bucket[] array | |
3791 | * contains 8 different DMA transfer sizes (in 16 | |
3792 | * byte increments) which the controller uses to fetch | |
3793 | * commands. This function fills in bucket_map[], which | |
3794 | * maps a given number of scatter gather elements to one of | |
3795 | * the 8 DMA transfer sizes. The point of it is to allow the | |
3796 | * controller to only do as much DMA as needed to fetch the | |
3797 | * command, with the DMA transfer size encoded in the lower | |
3798 | * bits of the command address. | |
3799 | */ | |
3800 | static void calc_bucket_map(int bucket[], int num_buckets, | |
3801 | int nsgs, int *bucket_map) | |
3802 | { | |
3803 | int i, j, b, size; | |
3804 | ||
3805 | /* even a command with 0 SGs requires 4 blocks */ | |
3806 | #define MINIMUM_TRANSFER_BLOCKS 4 | |
3807 | #define NUM_BUCKETS 8 | |
3808 | /* Note, bucket_map must have nsgs+1 entries. */ | |
3809 | for (i = 0; i <= nsgs; i++) { | |
3810 | /* Compute size of a command with i SG entries */ | |
3811 | size = i + MINIMUM_TRANSFER_BLOCKS; | |
3812 | b = num_buckets; /* Assume the biggest bucket */ | |
3813 | /* Find the bucket that is just big enough */ | |
3814 | for (j = 0; j < 8; j++) { | |
3815 | if (bucket[j] >= size) { | |
3816 | b = j; | |
3817 | break; | |
3818 | } | |
3819 | } | |
3820 | /* for a command with i SG entries, use bucket b. */ | |
3821 | bucket_map[i] = b; | |
3822 | } | |
3823 | } | |
3824 | ||
0f8a6a1e SC |
3825 | static void __devinit cciss_wait_for_mode_change_ack(ctlr_info_t *h) |
3826 | { | |
3827 | int i; | |
3828 | ||
3829 | /* under certain very rare conditions, this can take awhile. | |
3830 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
3831 | * as we enter this code.) */ | |
3832 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { | |
3833 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) | |
3834 | break; | |
3835 | msleep(10); | |
3836 | } | |
3837 | } | |
3838 | ||
b9933135 SC |
3839 | static __devinit void cciss_enter_performant_mode(ctlr_info_t *h) |
3840 | { | |
3841 | /* This is a bit complicated. There are 8 registers on | |
3842 | * the controller which we write to to tell it 8 different | |
3843 | * sizes of commands which there may be. It's a way of | |
3844 | * reducing the DMA done to fetch each command. Encoded into | |
3845 | * each command's tag are 3 bits which communicate to the controller | |
3846 | * which of the eight sizes that command fits within. The size of | |
3847 | * each command depends on how many scatter gather entries there are. | |
3848 | * Each SG entry requires 16 bytes. The eight registers are programmed | |
3849 | * with the number of 16-byte blocks a command of that size requires. | |
3850 | * The smallest command possible requires 5 such 16 byte blocks. | |
3851 | * the largest command possible requires MAXSGENTRIES + 4 16-byte | |
3852 | * blocks. Note, this only extends to the SG entries contained | |
3853 | * within the command block, and does not extend to chained blocks | |
3854 | * of SG elements. bft[] contains the eight values we write to | |
3855 | * the registers. They are not evenly distributed, but have more | |
3856 | * sizes for small commands, and fewer sizes for larger commands. | |
3857 | */ | |
5e216153 | 3858 | __u32 trans_offset; |
b9933135 | 3859 | int bft[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4}; |
5e216153 MM |
3860 | /* |
3861 | * 5 = 1 s/g entry or 4k | |
3862 | * 6 = 2 s/g entry or 8k | |
3863 | * 8 = 4 s/g entry or 16k | |
3864 | * 10 = 6 s/g entry or 24k | |
3865 | */ | |
5e216153 | 3866 | unsigned long register_value; |
5e216153 MM |
3867 | BUILD_BUG_ON(28 > MAXSGENTRIES + 4); |
3868 | ||
5e216153 MM |
3869 | h->reply_pool_wraparound = 1; /* spec: init to 1 */ |
3870 | ||
3871 | /* Controller spec: zero out this buffer. */ | |
3872 | memset(h->reply_pool, 0, h->max_commands * sizeof(__u64)); | |
3873 | h->reply_pool_head = h->reply_pool; | |
3874 | ||
3875 | trans_offset = readl(&(h->cfgtable->TransMethodOffset)); | |
3876 | calc_bucket_map(bft, ARRAY_SIZE(bft), h->maxsgentries, | |
3877 | h->blockFetchTable); | |
3878 | writel(bft[0], &h->transtable->BlockFetch0); | |
3879 | writel(bft[1], &h->transtable->BlockFetch1); | |
3880 | writel(bft[2], &h->transtable->BlockFetch2); | |
3881 | writel(bft[3], &h->transtable->BlockFetch3); | |
3882 | writel(bft[4], &h->transtable->BlockFetch4); | |
3883 | writel(bft[5], &h->transtable->BlockFetch5); | |
3884 | writel(bft[6], &h->transtable->BlockFetch6); | |
3885 | writel(bft[7], &h->transtable->BlockFetch7); | |
3886 | ||
3887 | /* size of controller ring buffer */ | |
3888 | writel(h->max_commands, &h->transtable->RepQSize); | |
3889 | writel(1, &h->transtable->RepQCount); | |
3890 | writel(0, &h->transtable->RepQCtrAddrLow32); | |
3891 | writel(0, &h->transtable->RepQCtrAddrHigh32); | |
3892 | writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32); | |
3893 | writel(0, &h->transtable->RepQAddr0High32); | |
3894 | writel(CFGTBL_Trans_Performant, | |
3895 | &(h->cfgtable->HostWrite.TransportRequest)); | |
3896 | ||
5e216153 | 3897 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
0f8a6a1e | 3898 | cciss_wait_for_mode_change_ack(h); |
5e216153 | 3899 | register_value = readl(&(h->cfgtable->TransportActive)); |
b9933135 | 3900 | if (!(register_value & CFGTBL_Trans_Performant)) |
5e216153 MM |
3901 | printk(KERN_WARNING "cciss: unable to get board into" |
3902 | " performant mode\n"); | |
b9933135 SC |
3903 | } |
3904 | ||
3905 | static void __devinit cciss_put_controller_into_performant_mode(ctlr_info_t *h) | |
3906 | { | |
3907 | __u32 trans_support; | |
3908 | ||
3909 | dev_dbg(&h->pdev->dev, "Trying to put board into Performant mode\n"); | |
3910 | /* Attempt to put controller into performant mode if supported */ | |
3911 | /* Does board support performant mode? */ | |
3912 | trans_support = readl(&(h->cfgtable->TransportSupport)); | |
3913 | if (!(trans_support & PERFORMANT_MODE)) | |
3914 | return; | |
3915 | ||
3916 | printk(KERN_WARNING "cciss%d: Placing controller into " | |
3917 | "performant mode\n", h->ctlr); | |
3918 | /* Performant mode demands commands on a 32 byte boundary | |
3919 | * pci_alloc_consistent aligns on page boundarys already. | |
3920 | * Just need to check if divisible by 32 | |
3921 | */ | |
3922 | if ((sizeof(CommandList_struct) % 32) != 0) { | |
3923 | printk(KERN_WARNING "%s %d %s\n", | |
3924 | "cciss info: command size[", | |
3925 | (int)sizeof(CommandList_struct), | |
3926 | "] not divisible by 32, no performant mode..\n"); | |
5e216153 MM |
3927 | return; |
3928 | } | |
3929 | ||
b9933135 SC |
3930 | /* Performant mode ring buffer and supporting data structures */ |
3931 | h->reply_pool = (__u64 *)pci_alloc_consistent( | |
3932 | h->pdev, h->max_commands * sizeof(__u64), | |
3933 | &(h->reply_pool_dhandle)); | |
3934 | ||
3935 | /* Need a block fetch table for performant mode */ | |
3936 | h->blockFetchTable = kmalloc(((h->maxsgentries+1) * | |
3937 | sizeof(__u32)), GFP_KERNEL); | |
3938 | ||
3939 | if ((h->reply_pool == NULL) || (h->blockFetchTable == NULL)) | |
3940 | goto clean_up; | |
3941 | ||
3942 | cciss_enter_performant_mode(h); | |
3943 | ||
5e216153 MM |
3944 | /* Change the access methods to the performant access methods */ |
3945 | h->access = SA5_performant_access; | |
b9933135 | 3946 | h->transMethod = CFGTBL_Trans_Performant; |
5e216153 MM |
3947 | |
3948 | return; | |
3949 | clean_up: | |
3950 | kfree(h->blockFetchTable); | |
3951 | if (h->reply_pool) | |
3952 | pci_free_consistent(h->pdev, | |
3953 | h->max_commands * sizeof(__u64), | |
3954 | h->reply_pool, | |
3955 | h->reply_pool_dhandle); | |
3956 | return; | |
3957 | ||
3958 | } /* cciss_put_controller_into_performant_mode */ | |
3959 | ||
fb86a35b MM |
3960 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
3961 | * controllers that are capable. If not, we use IO-APIC mode. | |
3962 | */ | |
3963 | ||
dac5488a | 3964 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c) |
fb86a35b MM |
3965 | { |
3966 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
3967 | int err; |
3968 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, | |
3969 | {0, 2}, {0, 3} | |
3970 | }; | |
fb86a35b MM |
3971 | |
3972 | /* Some boards advertise MSI but don't really support it */ | |
dac5488a SC |
3973 | if ((c->board_id == 0x40700E11) || (c->board_id == 0x40800E11) || |
3974 | (c->board_id == 0x40820E11) || (c->board_id == 0x40830E11)) | |
fb86a35b MM |
3975 | goto default_int_mode; |
3976 | ||
292e50dd SC |
3977 | if (pci_find_capability(c->pdev, PCI_CAP_ID_MSIX)) { |
3978 | err = pci_enable_msix(c->pdev, cciss_msix_entries, 4); | |
7c832835 BH |
3979 | if (!err) { |
3980 | c->intr[0] = cciss_msix_entries[0].vector; | |
3981 | c->intr[1] = cciss_msix_entries[1].vector; | |
3982 | c->intr[2] = cciss_msix_entries[2].vector; | |
3983 | c->intr[3] = cciss_msix_entries[3].vector; | |
3984 | c->msix_vector = 1; | |
3985 | return; | |
3986 | } | |
3987 | if (err > 0) { | |
3988 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " | |
3989 | "available\n", err); | |
1ecb9c0f | 3990 | goto default_int_mode; |
7c832835 BH |
3991 | } else { |
3992 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", | |
3993 | err); | |
1ecb9c0f | 3994 | goto default_int_mode; |
7c832835 BH |
3995 | } |
3996 | } | |
292e50dd SC |
3997 | if (pci_find_capability(c->pdev, PCI_CAP_ID_MSI)) { |
3998 | if (!pci_enable_msi(c->pdev)) { | |
7c832835 | 3999 | c->msi_vector = 1; |
7c832835 BH |
4000 | } else { |
4001 | printk(KERN_WARNING "cciss: MSI init failed\n"); | |
7c832835 BH |
4002 | } |
4003 | } | |
1ecb9c0f | 4004 | default_int_mode: |
7c832835 | 4005 | #endif /* CONFIG_PCI_MSI */ |
fb86a35b | 4006 | /* if we get here we're going to use the default interrupt mode */ |
292e50dd | 4007 | c->intr[PERF_MODE_INT] = c->pdev->irq; |
fb86a35b MM |
4008 | return; |
4009 | } | |
4010 | ||
6539fa9b | 4011 | static int __devinit cciss_lookup_board_id(struct pci_dev *pdev, u32 *board_id) |
1da177e4 | 4012 | { |
6539fa9b SC |
4013 | int i; |
4014 | u32 subsystem_vendor_id, subsystem_device_id; | |
2ec24ff1 | 4015 | |
6539fa9b SC |
4016 | subsystem_vendor_id = pdev->subsystem_vendor; |
4017 | subsystem_device_id = pdev->subsystem_device; | |
4018 | *board_id = ((subsystem_device_id << 16) & 0xffff0000) | | |
4019 | subsystem_vendor_id; | |
2ec24ff1 SC |
4020 | |
4021 | for (i = 0; i < ARRAY_SIZE(products); i++) { | |
4022 | /* Stand aside for hpsa driver on request */ | |
4023 | if (cciss_allow_hpsa && products[i].board_id == HPSA_BOUNDARY) | |
4024 | return -ENODEV; | |
6539fa9b SC |
4025 | if (*board_id == products[i].board_id) |
4026 | return i; | |
2ec24ff1 | 4027 | } |
6539fa9b SC |
4028 | dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x, ignoring.\n", |
4029 | *board_id); | |
4030 | return -ENODEV; | |
4031 | } | |
4032 | ||
dd9c426e SC |
4033 | static inline bool cciss_board_disabled(ctlr_info_t *h) |
4034 | { | |
4035 | u16 command; | |
4036 | ||
4037 | (void) pci_read_config_word(h->pdev, PCI_COMMAND, &command); | |
4038 | return ((command & PCI_COMMAND_MEMORY) == 0); | |
4039 | } | |
4040 | ||
d474830d SC |
4041 | static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev, |
4042 | unsigned long *memory_bar) | |
4043 | { | |
4044 | int i; | |
4045 | ||
4046 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) | |
4047 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { | |
4048 | /* addressing mode bits already removed */ | |
4049 | *memory_bar = pci_resource_start(pdev, i); | |
4050 | dev_dbg(&pdev->dev, "memory BAR = %lx\n", | |
4051 | *memory_bar); | |
4052 | return 0; | |
4053 | } | |
4054 | dev_warn(&pdev->dev, "no memory BAR found\n"); | |
4055 | return -ENODEV; | |
4056 | } | |
4057 | ||
e99ba136 SC |
4058 | static int __devinit cciss_wait_for_board_ready(ctlr_info_t *h) |
4059 | { | |
4060 | int i; | |
4061 | u32 scratchpad; | |
4062 | ||
4063 | for (i = 0; i < CCISS_BOARD_READY_ITERATIONS; i++) { | |
4064 | scratchpad = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); | |
4065 | if (scratchpad == CCISS_FIRMWARE_READY) | |
4066 | return 0; | |
4067 | msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS); | |
4068 | } | |
4069 | dev_warn(&h->pdev->dev, "board not ready, timed out.\n"); | |
4070 | return -ENODEV; | |
4071 | } | |
4072 | ||
8e93bf6d SC |
4073 | static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev, |
4074 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, | |
4075 | u64 *cfg_offset) | |
4076 | { | |
4077 | *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); | |
4078 | *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); | |
4079 | *cfg_base_addr &= (u32) 0x0000ffff; | |
4080 | *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); | |
4081 | if (*cfg_base_addr_index == -1) { | |
4082 | dev_warn(&pdev->dev, "cannot find cfg_base_addr_index, " | |
4083 | "*cfg_base_addr = 0x%08x\n", *cfg_base_addr); | |
4084 | return -ENODEV; | |
4085 | } | |
4086 | return 0; | |
4087 | } | |
4088 | ||
4809d098 SC |
4089 | static int __devinit cciss_find_cfgtables(ctlr_info_t *h) |
4090 | { | |
4091 | u64 cfg_offset; | |
4092 | u32 cfg_base_addr; | |
4093 | u64 cfg_base_addr_index; | |
4094 | u32 trans_offset; | |
8e93bf6d | 4095 | int rc; |
4809d098 | 4096 | |
8e93bf6d SC |
4097 | rc = cciss_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, |
4098 | &cfg_base_addr_index, &cfg_offset); | |
4099 | if (rc) | |
4100 | return rc; | |
4809d098 | 4101 | h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, |
8e93bf6d | 4102 | cfg_base_addr_index) + cfg_offset, sizeof(h->cfgtable)); |
4809d098 SC |
4103 | if (!h->cfgtable) |
4104 | return -ENOMEM; | |
4105 | /* Find performant mode table. */ | |
8e93bf6d | 4106 | trans_offset = readl(&h->cfgtable->TransMethodOffset); |
4809d098 SC |
4107 | h->transtable = remap_pci_mem(pci_resource_start(h->pdev, |
4108 | cfg_base_addr_index)+cfg_offset+trans_offset, | |
4109 | sizeof(*h->transtable)); | |
4110 | if (!h->transtable) | |
4111 | return -ENOMEM; | |
4112 | return 0; | |
4113 | } | |
4114 | ||
afadbf4b SC |
4115 | /* Interrogate the hardware for some limits: |
4116 | * max commands, max SG elements without chaining, and with chaining, | |
4117 | * SG chain block size, etc. | |
4118 | */ | |
4119 | static void __devinit cciss_find_board_params(ctlr_info_t *h) | |
4120 | { | |
4121 | h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); | |
4122 | h->nr_cmds = h->max_commands - 4; /* Allow room for some ioctls */ | |
4123 | h->maxsgentries = readl(&(h->cfgtable->MaxSGElements)); | |
4124 | /* | |
4125 | * Limit in-command s/g elements to 32 save dma'able memory. | |
4126 | * Howvever spec says if 0, use 31 | |
4127 | */ | |
4128 | h->max_cmd_sgentries = 31; | |
4129 | if (h->maxsgentries > 512) { | |
4130 | h->max_cmd_sgentries = 32; | |
4131 | h->chainsize = h->maxsgentries - h->max_cmd_sgentries + 1; | |
4132 | h->maxsgentries--; /* save one for chain pointer */ | |
4133 | } else { | |
4134 | h->maxsgentries = 31; /* default to traditional values */ | |
4135 | h->chainsize = 0; | |
4136 | } | |
4137 | } | |
4138 | ||
501b92cd SC |
4139 | static inline bool CISS_signature_present(ctlr_info_t *h) |
4140 | { | |
4141 | if ((readb(&h->cfgtable->Signature[0]) != 'C') || | |
4142 | (readb(&h->cfgtable->Signature[1]) != 'I') || | |
4143 | (readb(&h->cfgtable->Signature[2]) != 'S') || | |
4144 | (readb(&h->cfgtable->Signature[3]) != 'S')) { | |
4145 | dev_warn(&h->pdev->dev, "not a valid CISS config table\n"); | |
4146 | return false; | |
4147 | } | |
4148 | return true; | |
4149 | } | |
4150 | ||
322e304c SC |
4151 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
4152 | static inline void cciss_enable_scsi_prefetch(ctlr_info_t *h) | |
4153 | { | |
4154 | #ifdef CONFIG_X86 | |
4155 | u32 prefetch; | |
4156 | ||
4157 | prefetch = readl(&(h->cfgtable->SCSI_Prefetch)); | |
4158 | prefetch |= 0x100; | |
4159 | writel(prefetch, &(h->cfgtable->SCSI_Prefetch)); | |
4160 | #endif | |
4161 | } | |
4162 | ||
bfd63ee5 SC |
4163 | /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result |
4164 | * in a prefetch beyond physical memory. | |
4165 | */ | |
4166 | static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t *h) | |
4167 | { | |
4168 | u32 dma_prefetch; | |
4169 | __u32 dma_refetch; | |
4170 | ||
4171 | if (h->board_id != 0x3225103C) | |
4172 | return; | |
4173 | dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); | |
4174 | dma_prefetch |= 0x8000; | |
4175 | writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); | |
4176 | pci_read_config_dword(h->pdev, PCI_COMMAND_PARITY, &dma_refetch); | |
4177 | dma_refetch |= 0x1; | |
4178 | pci_write_config_dword(h->pdev, PCI_COMMAND_PARITY, dma_refetch); | |
4179 | } | |
4180 | ||
6539fa9b SC |
4181 | static int __devinit cciss_pci_init(ctlr_info_t *c) |
4182 | { | |
4809d098 | 4183 | int prod_index, err; |
6539fa9b SC |
4184 | |
4185 | prod_index = cciss_lookup_board_id(c->pdev, &c->board_id); | |
4186 | if (prod_index < 0) | |
2ec24ff1 | 4187 | return -ENODEV; |
6539fa9b SC |
4188 | c->product_name = products[prod_index].product_name; |
4189 | c->access = *(products[prod_index].access); | |
1da177e4 | 4190 | |
dd9c426e | 4191 | if (cciss_board_disabled(c)) { |
7c832835 BH |
4192 | printk(KERN_WARNING |
4193 | "cciss: controller appears to be disabled\n"); | |
c33ac89b | 4194 | return -ENODEV; |
1da177e4 | 4195 | } |
292e50dd | 4196 | err = pci_enable_device(c->pdev); |
7c832835 | 4197 | if (err) { |
1da177e4 | 4198 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
c33ac89b | 4199 | return err; |
1da177e4 | 4200 | } |
1da177e4 | 4201 | |
292e50dd | 4202 | err = pci_request_regions(c->pdev, "cciss"); |
4e570309 BH |
4203 | if (err) { |
4204 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " | |
7c832835 | 4205 | "aborting\n"); |
872225ca | 4206 | return err; |
4e570309 BH |
4207 | } |
4208 | ||
1da177e4 | 4209 | #ifdef CCISS_DEBUG |
292e50dd SC |
4210 | printk(KERN_INFO "command = %x\n", command); |
4211 | printk(KERN_INFO "irq = %x\n", c->pdev->irq); | |
6539fa9b | 4212 | printk(KERN_INFO "board_id = %x\n", c->board_id); |
7c832835 | 4213 | #endif /* CCISS_DEBUG */ |
1da177e4 | 4214 | |
fb86a35b MM |
4215 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
4216 | * else we use the IO-APIC interrupt assigned to us by system ROM. | |
4217 | */ | |
dac5488a | 4218 | cciss_interrupt_mode(c); |
d474830d SC |
4219 | err = cciss_pci_find_memory_BAR(c->pdev, &c->paddr); |
4220 | if (err) | |
e1438581 | 4221 | goto err_out_free_res; |
a5b92873 | 4222 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
da550321 SC |
4223 | if (!c->vaddr) { |
4224 | err = -ENOMEM; | |
4225 | goto err_out_free_res; | |
4226 | } | |
e99ba136 SC |
4227 | err = cciss_wait_for_board_ready(c); |
4228 | if (err) | |
4e570309 | 4229 | goto err_out_free_res; |
4809d098 SC |
4230 | err = cciss_find_cfgtables(c); |
4231 | if (err) | |
4e570309 | 4232 | goto err_out_free_res; |
6539fa9b | 4233 | print_cfg_table(c->cfgtable); |
afadbf4b | 4234 | cciss_find_board_params(c); |
1da177e4 | 4235 | |
501b92cd | 4236 | if (!CISS_signature_present(c)) { |
c33ac89b | 4237 | err = -ENODEV; |
4e570309 | 4238 | goto err_out_free_res; |
1da177e4 | 4239 | } |
322e304c | 4240 | cciss_enable_scsi_prefetch(c); |
bfd63ee5 | 4241 | cciss_p600_dma_prefetch_quirk(c); |
b14aa6dc | 4242 | cciss_put_controller_into_performant_mode(c); |
1da177e4 LT |
4243 | return 0; |
4244 | ||
5faad620 | 4245 | err_out_free_res: |
872225ca MM |
4246 | /* |
4247 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4248 | * Smart Array controllers that pci_enable_device does not undo | |
4249 | */ | |
da550321 SC |
4250 | if (c->transtable) |
4251 | iounmap(c->transtable); | |
4252 | if (c->cfgtable) | |
4253 | iounmap(c->cfgtable); | |
4254 | if (c->vaddr) | |
4255 | iounmap(c->vaddr); | |
292e50dd | 4256 | pci_release_regions(c->pdev); |
c33ac89b | 4257 | return err; |
1da177e4 LT |
4258 | } |
4259 | ||
6ae5ce8e MM |
4260 | /* Function to find the first free pointer into our hba[] array |
4261 | * Returns -1 if no free entries are left. | |
7c832835 | 4262 | */ |
1da177e4 LT |
4263 | static int alloc_cciss_hba(void) |
4264 | { | |
799202cb | 4265 | int i; |
1da177e4 | 4266 | |
7c832835 | 4267 | for (i = 0; i < MAX_CTLR; i++) { |
1da177e4 LT |
4268 | if (!hba[i]) { |
4269 | ctlr_info_t *p; | |
f2912a12 | 4270 | |
06ff37ff | 4271 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
1da177e4 LT |
4272 | if (!p) |
4273 | goto Enomem; | |
1da177e4 LT |
4274 | hba[i] = p; |
4275 | return i; | |
4276 | } | |
4277 | } | |
4278 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
7c832835 | 4279 | " of %d controllers.\n", MAX_CTLR); |
799202cb MM |
4280 | return -1; |
4281 | Enomem: | |
1da177e4 | 4282 | printk(KERN_ERR "cciss: out of memory.\n"); |
1da177e4 LT |
4283 | return -1; |
4284 | } | |
4285 | ||
2c935593 | 4286 | static void free_hba(int n) |
1da177e4 | 4287 | { |
2c935593 SC |
4288 | ctlr_info_t *h = hba[n]; |
4289 | int i; | |
1da177e4 | 4290 | |
2c935593 SC |
4291 | hba[n] = NULL; |
4292 | for (i = 0; i < h->highest_lun + 1; i++) | |
4293 | if (h->gendisk[i] != NULL) | |
4294 | put_disk(h->gendisk[i]); | |
4295 | kfree(h); | |
1da177e4 LT |
4296 | } |
4297 | ||
82eb03cf CC |
4298 | /* Send a message CDB to the firmware. */ |
4299 | static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) | |
4300 | { | |
4301 | typedef struct { | |
4302 | CommandListHeader_struct CommandHeader; | |
4303 | RequestBlock_struct Request; | |
4304 | ErrDescriptor_struct ErrorDescriptor; | |
4305 | } Command; | |
4306 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); | |
4307 | Command *cmd; | |
4308 | dma_addr_t paddr64; | |
4309 | uint32_t paddr32, tag; | |
4310 | void __iomem *vaddr; | |
4311 | int i, err; | |
4312 | ||
4313 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); | |
4314 | if (vaddr == NULL) | |
4315 | return -ENOMEM; | |
4316 | ||
4317 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the | |
4318 | CCISS commands, so they must be allocated from the lower 4GiB of | |
4319 | memory. */ | |
e930438c | 4320 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
82eb03cf CC |
4321 | if (err) { |
4322 | iounmap(vaddr); | |
4323 | return -ENOMEM; | |
4324 | } | |
4325 | ||
4326 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); | |
4327 | if (cmd == NULL) { | |
4328 | iounmap(vaddr); | |
4329 | return -ENOMEM; | |
4330 | } | |
4331 | ||
4332 | /* This must fit, because of the 32-bit consistent DMA mask. Also, | |
4333 | although there's no guarantee, we assume that the address is at | |
4334 | least 4-byte aligned (most likely, it's page-aligned). */ | |
4335 | paddr32 = paddr64; | |
4336 | ||
4337 | cmd->CommandHeader.ReplyQueue = 0; | |
4338 | cmd->CommandHeader.SGList = 0; | |
4339 | cmd->CommandHeader.SGTotal = 0; | |
4340 | cmd->CommandHeader.Tag.lower = paddr32; | |
4341 | cmd->CommandHeader.Tag.upper = 0; | |
4342 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); | |
4343 | ||
4344 | cmd->Request.CDBLen = 16; | |
4345 | cmd->Request.Type.Type = TYPE_MSG; | |
4346 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; | |
4347 | cmd->Request.Type.Direction = XFER_NONE; | |
4348 | cmd->Request.Timeout = 0; /* Don't time out */ | |
4349 | cmd->Request.CDB[0] = opcode; | |
4350 | cmd->Request.CDB[1] = type; | |
4351 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ | |
4352 | ||
4353 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); | |
4354 | cmd->ErrorDescriptor.Addr.upper = 0; | |
4355 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); | |
4356 | ||
4357 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); | |
4358 | ||
4359 | for (i = 0; i < 10; i++) { | |
4360 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); | |
4361 | if ((tag & ~3) == paddr32) | |
4362 | break; | |
4363 | schedule_timeout_uninterruptible(HZ); | |
4364 | } | |
4365 | ||
4366 | iounmap(vaddr); | |
4367 | ||
4368 | /* we leak the DMA buffer here ... no choice since the controller could | |
4369 | still complete the command. */ | |
4370 | if (i == 10) { | |
4371 | printk(KERN_ERR "cciss: controller message %02x:%02x timed out\n", | |
4372 | opcode, type); | |
4373 | return -ETIMEDOUT; | |
4374 | } | |
4375 | ||
4376 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); | |
4377 | ||
4378 | if (tag & 2) { | |
4379 | printk(KERN_ERR "cciss: controller message %02x:%02x failed\n", | |
4380 | opcode, type); | |
4381 | return -EIO; | |
4382 | } | |
4383 | ||
4384 | printk(KERN_INFO "cciss: controller message %02x:%02x succeeded\n", | |
4385 | opcode, type); | |
4386 | return 0; | |
4387 | } | |
4388 | ||
4389 | #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0) | |
4390 | #define cciss_noop(p) cciss_message(p, 3, 0) | |
4391 | ||
4392 | static __devinit int cciss_reset_msi(struct pci_dev *pdev) | |
4393 | { | |
4394 | /* the #defines are stolen from drivers/pci/msi.h. */ | |
4395 | #define msi_control_reg(base) (base + PCI_MSI_FLAGS) | |
4396 | #define PCI_MSIX_FLAGS_ENABLE (1 << 15) | |
4397 | ||
4398 | int pos; | |
4399 | u16 control = 0; | |
4400 | ||
4401 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); | |
4402 | if (pos) { | |
4403 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
4404 | if (control & PCI_MSI_FLAGS_ENABLE) { | |
4405 | printk(KERN_INFO "cciss: resetting MSI\n"); | |
4406 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE); | |
4407 | } | |
4408 | } | |
4409 | ||
4410 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); | |
4411 | if (pos) { | |
4412 | pci_read_config_word(pdev, msi_control_reg(pos), &control); | |
4413 | if (control & PCI_MSIX_FLAGS_ENABLE) { | |
4414 | printk(KERN_INFO "cciss: resetting MSI-X\n"); | |
4415 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE); | |
4416 | } | |
4417 | } | |
4418 | ||
4419 | return 0; | |
4420 | } | |
4421 | ||
a6528d01 SC |
4422 | static int cciss_controller_hard_reset(struct pci_dev *pdev, |
4423 | void * __iomem vaddr, bool use_doorbell) | |
82eb03cf | 4424 | { |
a6528d01 SC |
4425 | u16 pmcsr; |
4426 | int pos; | |
82eb03cf | 4427 | |
a6528d01 SC |
4428 | if (use_doorbell) { |
4429 | /* For everything after the P600, the PCI power state method | |
4430 | * of resetting the controller doesn't work, so we have this | |
4431 | * other way using the doorbell register. | |
4432 | */ | |
4433 | dev_info(&pdev->dev, "using doorbell to reset controller\n"); | |
4434 | writel(DOORBELL_CTLR_RESET, vaddr + SA5_DOORBELL); | |
4435 | msleep(1000); | |
4436 | } else { /* Try to do it the PCI power state way */ | |
4437 | ||
4438 | /* Quoting from the Open CISS Specification: "The Power | |
4439 | * Management Control/Status Register (CSR) controls the power | |
4440 | * state of the device. The normal operating state is D0, | |
4441 | * CSR=00h. The software off state is D3, CSR=03h. To reset | |
4442 | * the controller, place the interface device in D3 then to D0, | |
4443 | * this causes a secondary PCI reset which will reset the | |
4444 | * controller." */ | |
4445 | ||
4446 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); | |
4447 | if (pos == 0) { | |
4448 | dev_err(&pdev->dev, | |
4449 | "cciss_controller_hard_reset: " | |
4450 | "PCI PM not supported\n"); | |
4451 | return -ENODEV; | |
4452 | } | |
4453 | dev_info(&pdev->dev, "using PCI PM to reset controller\n"); | |
4454 | /* enter the D3hot power management state */ | |
4455 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); | |
4456 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4457 | pmcsr |= PCI_D3hot; | |
4458 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
82eb03cf | 4459 | |
a6528d01 | 4460 | msleep(500); |
82eb03cf | 4461 | |
a6528d01 SC |
4462 | /* enter the D0 power management state */ |
4463 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
4464 | pmcsr |= PCI_D0; | |
4465 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); | |
82eb03cf | 4466 | |
a6528d01 SC |
4467 | msleep(500); |
4468 | } | |
4469 | return 0; | |
4470 | } | |
4471 | ||
4472 | /* This does a hard reset of the controller using PCI power management | |
4473 | * states or using the doorbell register. */ | |
4474 | static __devinit int cciss_kdump_hard_reset_controller(struct pci_dev *pdev) | |
4475 | { | |
4476 | u16 saved_config_space[32]; | |
4477 | u64 cfg_offset; | |
4478 | u32 cfg_base_addr; | |
4479 | u64 cfg_base_addr_index; | |
4480 | void __iomem *vaddr; | |
4481 | unsigned long paddr; | |
4482 | u32 misc_fw_support, active_transport; | |
4483 | int rc, i; | |
4484 | CfgTable_struct __iomem *cfgtable; | |
4485 | bool use_doorbell; | |
4486 | ||
4487 | /* For controllers as old a the p600, this is very nearly | |
4488 | * the same thing as | |
4489 | * | |
4490 | * pci_save_state(pci_dev); | |
4491 | * pci_set_power_state(pci_dev, PCI_D3hot); | |
4492 | * pci_set_power_state(pci_dev, PCI_D0); | |
4493 | * pci_restore_state(pci_dev); | |
4494 | * | |
4495 | * but we can't use these nice canned kernel routines on | |
4496 | * kexec, because they also check the MSI/MSI-X state in PCI | |
4497 | * configuration space and do the wrong thing when it is | |
4498 | * set/cleared. Also, the pci_save/restore_state functions | |
4499 | * violate the ordering requirements for restoring the | |
4500 | * configuration space from the CCISS document (see the | |
4501 | * comment below). So we roll our own .... | |
4502 | * | |
4503 | * For controllers newer than the P600, the pci power state | |
4504 | * method of resetting doesn't work so we have another way | |
4505 | * using the doorbell register. | |
4506 | */ | |
82eb03cf CC |
4507 | |
4508 | for (i = 0; i < 32; i++) | |
4509 | pci_read_config_word(pdev, 2*i, &saved_config_space[i]); | |
4510 | ||
a6528d01 SC |
4511 | /* find the first memory BAR, so we can find the cfg table */ |
4512 | rc = cciss_pci_find_memory_BAR(pdev, &paddr); | |
4513 | if (rc) | |
4514 | return rc; | |
4515 | vaddr = remap_pci_mem(paddr, 0x250); | |
4516 | if (!vaddr) | |
4517 | return -ENOMEM; | |
82eb03cf | 4518 | |
a6528d01 SC |
4519 | /* find cfgtable in order to check if reset via doorbell is supported */ |
4520 | rc = cciss_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, | |
4521 | &cfg_base_addr_index, &cfg_offset); | |
4522 | if (rc) | |
4523 | goto unmap_vaddr; | |
4524 | cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
4525 | cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); | |
4526 | if (!cfgtable) { | |
4527 | rc = -ENOMEM; | |
4528 | goto unmap_vaddr; | |
4529 | } | |
82eb03cf | 4530 | |
a6528d01 SC |
4531 | /* If reset via doorbell register is supported, use that. */ |
4532 | misc_fw_support = readl(&cfgtable->misc_fw_support); | |
4533 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; | |
82eb03cf | 4534 | |
a6528d01 SC |
4535 | rc = cciss_controller_hard_reset(pdev, vaddr, use_doorbell); |
4536 | if (rc) | |
4537 | goto unmap_cfgtable; | |
82eb03cf CC |
4538 | |
4539 | /* Restore the PCI configuration space. The Open CISS | |
4540 | * Specification says, "Restore the PCI Configuration | |
4541 | * Registers, offsets 00h through 60h. It is important to | |
4542 | * restore the command register, 16-bits at offset 04h, | |
4543 | * last. Do not restore the configuration status register, | |
a6528d01 SC |
4544 | * 16-bits at offset 06h." Note that the offset is 2*i. |
4545 | */ | |
82eb03cf CC |
4546 | for (i = 0; i < 32; i++) { |
4547 | if (i == 2 || i == 3) | |
4548 | continue; | |
4549 | pci_write_config_word(pdev, 2*i, saved_config_space[i]); | |
4550 | } | |
4551 | wmb(); | |
4552 | pci_write_config_word(pdev, 4, saved_config_space[2]); | |
4553 | ||
a6528d01 SC |
4554 | /* Some devices (notably the HP Smart Array 5i Controller) |
4555 | need a little pause here */ | |
4556 | msleep(CCISS_POST_RESET_PAUSE_MSECS); | |
4557 | ||
4558 | /* Controller should be in simple mode at this point. If it's not, | |
4559 | * It means we're on one of those controllers which doesn't support | |
4560 | * the doorbell reset method and on which the PCI power management reset | |
4561 | * method doesn't work (P800, for example.) | |
4562 | * In those cases, don't try to proceed, as it generally doesn't work. | |
4563 | */ | |
4564 | active_transport = readl(&cfgtable->TransportActive); | |
4565 | if (active_transport & PERFORMANT_MODE) { | |
4566 | dev_warn(&pdev->dev, "Unable to successfully reset controller," | |
4567 | " Ignoring controller.\n"); | |
4568 | rc = -ENODEV; | |
4569 | } | |
4570 | ||
4571 | unmap_cfgtable: | |
4572 | iounmap(cfgtable); | |
4573 | ||
4574 | unmap_vaddr: | |
4575 | iounmap(vaddr); | |
4576 | return rc; | |
82eb03cf CC |
4577 | } |
4578 | ||
83123cb1 SC |
4579 | static __devinit int cciss_init_reset_devices(struct pci_dev *pdev) |
4580 | { | |
a6528d01 | 4581 | int rc, i; |
83123cb1 SC |
4582 | |
4583 | if (!reset_devices) | |
4584 | return 0; | |
4585 | ||
a6528d01 SC |
4586 | /* Reset the controller with a PCI power-cycle or via doorbell */ |
4587 | rc = cciss_kdump_hard_reset_controller(pdev); | |
83123cb1 | 4588 | |
a6528d01 SC |
4589 | /* -ENOTSUPP here means we cannot reset the controller |
4590 | * but it's already (and still) up and running in | |
4591 | * "performant mode". | |
4592 | */ | |
4593 | if (rc == -ENOTSUPP) | |
4594 | return 0; /* just try to do the kdump anyhow. */ | |
4595 | if (rc) | |
4596 | return -ENODEV; | |
4597 | if (cciss_reset_msi(pdev)) | |
4598 | return -ENODEV; | |
83123cb1 SC |
4599 | |
4600 | /* Now try to get the controller to respond to a no-op */ | |
4601 | for (i = 0; i < CCISS_POST_RESET_NOOP_RETRIES; i++) { | |
4602 | if (cciss_noop(pdev) == 0) | |
4603 | break; | |
4604 | else | |
4605 | dev_warn(&pdev->dev, "no-op failed%s\n", | |
4606 | (i < CCISS_POST_RESET_NOOP_RETRIES - 1 ? | |
4607 | "; re-trying" : "")); | |
4608 | msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS); | |
4609 | } | |
4610 | return 0; | |
4611 | } | |
4612 | ||
1da177e4 LT |
4613 | /* |
4614 | * This is it. Find all the controllers and register them. I really hate | |
4615 | * stealing all these major device numbers. | |
4616 | * returns the number of block devices registered. | |
4617 | */ | |
4618 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
7c832835 | 4619 | const struct pci_device_id *ent) |
1da177e4 | 4620 | { |
1da177e4 | 4621 | int i; |
799202cb | 4622 | int j = 0; |
5c07a311 | 4623 | int k = 0; |
1da177e4 | 4624 | int rc; |
22bece00 | 4625 | int dac, return_code; |
212a5026 | 4626 | InquiryData_struct *inq_buff; |
1da177e4 | 4627 | |
83123cb1 SC |
4628 | rc = cciss_init_reset_devices(pdev); |
4629 | if (rc) | |
4630 | return rc; | |
1da177e4 | 4631 | i = alloc_cciss_hba(); |
7c832835 | 4632 | if (i < 0) |
e2019b58 | 4633 | return -1; |
292e50dd SC |
4634 | |
4635 | hba[i]->pdev = pdev; | |
1f8ef380 | 4636 | hba[i]->busy_initializing = 1; |
8a3173de JA |
4637 | INIT_HLIST_HEAD(&hba[i]->cmpQ); |
4638 | INIT_HLIST_HEAD(&hba[i]->reqQ); | |
b368c9dd | 4639 | mutex_init(&hba[i]->busy_shutting_down); |
1f8ef380 | 4640 | |
292e50dd | 4641 | if (cciss_pci_init(hba[i]) != 0) |
2cfa948c | 4642 | goto clean_no_release_regions; |
1da177e4 LT |
4643 | |
4644 | sprintf(hba[i]->devname, "cciss%d", i); | |
4645 | hba[i]->ctlr = i; | |
1da177e4 | 4646 | |
b368c9dd AP |
4647 | init_completion(&hba[i]->scan_wait); |
4648 | ||
7fe06326 AP |
4649 | if (cciss_create_hba_sysfs_entry(hba[i])) |
4650 | goto clean0; | |
4651 | ||
1da177e4 | 4652 | /* configure PCI DMA stuff */ |
6a35528a | 4653 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
40aabb58 | 4654 | dac = 1; |
284901a9 | 4655 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
40aabb58 | 4656 | dac = 0; |
1da177e4 | 4657 | else { |
40aabb58 | 4658 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
1da177e4 LT |
4659 | goto clean1; |
4660 | } | |
4661 | ||
4662 | /* | |
4663 | * register with the major number, or get a dynamic major number | |
4664 | * by passing 0 as argument. This is done for greater than | |
4665 | * 8 controller support. | |
4666 | */ | |
4667 | if (i < MAX_CTLR_ORIG) | |
564de74a | 4668 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
1da177e4 | 4669 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
7c832835 | 4670 | if (rc == -EBUSY || rc == -EINVAL) { |
1da177e4 | 4671 | printk(KERN_ERR |
7c832835 BH |
4672 | "cciss: Unable to get major number %d for %s " |
4673 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
1da177e4 | 4674 | goto clean1; |
7c832835 | 4675 | } else { |
1da177e4 LT |
4676 | if (i >= MAX_CTLR_ORIG) |
4677 | hba[i]->major = rc; | |
4678 | } | |
4679 | ||
4680 | /* make sure the board interrupts are off */ | |
4681 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
0c2b3908 | 4682 | if (hba[i]->msi_vector || hba[i]->msix_vector) { |
256aea3f | 4683 | if (request_irq(hba[i]->intr[PERF_MODE_INT], |
0c2b3908 MM |
4684 | do_cciss_msix_intr, |
4685 | IRQF_DISABLED, hba[i]->devname, hba[i])) { | |
4686 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", | |
256aea3f | 4687 | hba[i]->intr[PERF_MODE_INT], hba[i]->devname); |
0c2b3908 MM |
4688 | goto clean2; |
4689 | } | |
4690 | } else { | |
256aea3f | 4691 | if (request_irq(hba[i]->intr[PERF_MODE_INT], do_cciss_intx, |
0c2b3908 MM |
4692 | IRQF_DISABLED, hba[i]->devname, hba[i])) { |
4693 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", | |
256aea3f | 4694 | hba[i]->intr[PERF_MODE_INT], hba[i]->devname); |
0c2b3908 MM |
4695 | goto clean2; |
4696 | } | |
1da177e4 | 4697 | } |
40aabb58 BH |
4698 | |
4699 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", | |
7c832835 | 4700 | hba[i]->devname, pdev->device, pci_name(pdev), |
5e216153 | 4701 | hba[i]->intr[PERF_MODE_INT], dac ? "" : " not"); |
7c832835 BH |
4702 | |
4703 | hba[i]->cmd_pool_bits = | |
061837bc JL |
4704 | kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
4705 | * sizeof(unsigned long), GFP_KERNEL); | |
7c832835 BH |
4706 | hba[i]->cmd_pool = (CommandList_struct *) |
4707 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 4708 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
4709 | &(hba[i]->cmd_pool_dhandle)); |
4710 | hba[i]->errinfo_pool = (ErrorInfo_struct *) | |
4711 | pci_alloc_consistent(hba[i]->pdev, | |
f880632f | 4712 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
4713 | &(hba[i]->errinfo_pool_dhandle)); |
4714 | if ((hba[i]->cmd_pool_bits == NULL) | |
4715 | || (hba[i]->cmd_pool == NULL) | |
4716 | || (hba[i]->errinfo_pool == NULL)) { | |
4717 | printk(KERN_ERR "cciss: out of memory"); | |
1da177e4 LT |
4718 | goto clean4; |
4719 | } | |
5c07a311 DB |
4720 | |
4721 | /* Need space for temp scatter list */ | |
4722 | hba[i]->scatter_list = kmalloc(hba[i]->max_commands * | |
4723 | sizeof(struct scatterlist *), | |
4724 | GFP_KERNEL); | |
4725 | for (k = 0; k < hba[i]->nr_cmds; k++) { | |
4726 | hba[i]->scatter_list[k] = kmalloc(sizeof(struct scatterlist) * | |
4727 | hba[i]->maxsgentries, | |
4728 | GFP_KERNEL); | |
4729 | if (hba[i]->scatter_list[k] == NULL) { | |
4730 | printk(KERN_ERR "cciss%d: could not allocate " | |
4731 | "s/g lists\n", i); | |
4732 | goto clean4; | |
4733 | } | |
4734 | } | |
49fc5601 SC |
4735 | hba[i]->cmd_sg_list = cciss_allocate_sg_chain_blocks(hba[i], |
4736 | hba[i]->chainsize, hba[i]->nr_cmds); | |
4737 | if (!hba[i]->cmd_sg_list && hba[i]->chainsize > 0) | |
5c07a311 | 4738 | goto clean4; |
5c07a311 | 4739 | |
1da177e4 | 4740 | spin_lock_init(&hba[i]->lock); |
1da177e4 | 4741 | |
7c832835 BH |
4742 | /* Initialize the pdev driver private data. |
4743 | have it point to hba[i]. */ | |
1da177e4 | 4744 | pci_set_drvdata(pdev, hba[i]); |
7c832835 BH |
4745 | /* command and error info recs zeroed out before |
4746 | they are used */ | |
4747 | memset(hba[i]->cmd_pool_bits, 0, | |
061837bc JL |
4748 | DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
4749 | * sizeof(unsigned long)); | |
1da177e4 | 4750 | |
6ae5ce8e MM |
4751 | hba[i]->num_luns = 0; |
4752 | hba[i]->highest_lun = -1; | |
4753 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
9cef0d2f | 4754 | hba[i]->drv[j] = NULL; |
6ae5ce8e MM |
4755 | hba[i]->gendisk[j] = NULL; |
4756 | } | |
1da177e4 LT |
4757 | |
4758 | cciss_scsi_setup(i); | |
4759 | ||
4760 | /* Turn the interrupts on so we can service requests */ | |
4761 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
4762 | ||
22bece00 MM |
4763 | /* Get the firmware version */ |
4764 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); | |
4765 | if (inq_buff == NULL) { | |
4766 | printk(KERN_ERR "cciss: out of memory\n"); | |
4767 | goto clean4; | |
4768 | } | |
4769 | ||
4770 | return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff, | |
b57695fe | 4771 | sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); |
22bece00 MM |
4772 | if (return_code == IO_OK) { |
4773 | hba[i]->firm_ver[0] = inq_buff->data_byte[32]; | |
4774 | hba[i]->firm_ver[1] = inq_buff->data_byte[33]; | |
4775 | hba[i]->firm_ver[2] = inq_buff->data_byte[34]; | |
4776 | hba[i]->firm_ver[3] = inq_buff->data_byte[35]; | |
4777 | } else { /* send command failed */ | |
4778 | printk(KERN_WARNING "cciss: unable to determine firmware" | |
4779 | " version of controller\n"); | |
4780 | } | |
212a5026 | 4781 | kfree(inq_buff); |
22bece00 | 4782 | |
1da177e4 | 4783 | cciss_procinit(i); |
92c4231a | 4784 | |
5c07a311 | 4785 | hba[i]->cciss_max_sectors = 8192; |
92c4231a | 4786 | |
2d11d993 | 4787 | rebuild_lun_table(hba[i], 1, 0); |
d6dbf42e | 4788 | hba[i]->busy_initializing = 0; |
e2019b58 | 4789 | return 1; |
1da177e4 | 4790 | |
6ae5ce8e | 4791 | clean4: |
6044ec88 | 4792 | kfree(hba[i]->cmd_pool_bits); |
5c07a311 DB |
4793 | /* Free up sg elements */ |
4794 | for (k = 0; k < hba[i]->nr_cmds; k++) | |
4795 | kfree(hba[i]->scatter_list[k]); | |
4796 | kfree(hba[i]->scatter_list); | |
49fc5601 | 4797 | cciss_free_sg_chain_blocks(hba[i]->cmd_sg_list, hba[i]->nr_cmds); |
7c832835 | 4798 | if (hba[i]->cmd_pool) |
1da177e4 | 4799 | pci_free_consistent(hba[i]->pdev, |
f880632f | 4800 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
7c832835 BH |
4801 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
4802 | if (hba[i]->errinfo_pool) | |
1da177e4 | 4803 | pci_free_consistent(hba[i]->pdev, |
f880632f | 4804 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 BH |
4805 | hba[i]->errinfo_pool, |
4806 | hba[i]->errinfo_pool_dhandle); | |
5e216153 | 4807 | free_irq(hba[i]->intr[PERF_MODE_INT], hba[i]); |
6ae5ce8e | 4808 | clean2: |
1da177e4 | 4809 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
6ae5ce8e | 4810 | clean1: |
7fe06326 AP |
4811 | cciss_destroy_hba_sysfs_entry(hba[i]); |
4812 | clean0: | |
2cfa948c SC |
4813 | pci_release_regions(pdev); |
4814 | clean_no_release_regions: | |
1f8ef380 | 4815 | hba[i]->busy_initializing = 0; |
9cef0d2f | 4816 | |
872225ca MM |
4817 | /* |
4818 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4819 | * Smart Array controllers that pci_enable_device does not undo | |
4820 | */ | |
799202cb | 4821 | pci_set_drvdata(pdev, NULL); |
61808c2b | 4822 | free_hba(i); |
e2019b58 | 4823 | return -1; |
1da177e4 LT |
4824 | } |
4825 | ||
e9ca75b5 | 4826 | static void cciss_shutdown(struct pci_dev *pdev) |
1da177e4 | 4827 | { |
29009a03 SC |
4828 | ctlr_info_t *h; |
4829 | char *flush_buf; | |
7c832835 | 4830 | int return_code; |
1da177e4 | 4831 | |
29009a03 SC |
4832 | h = pci_get_drvdata(pdev); |
4833 | flush_buf = kzalloc(4, GFP_KERNEL); | |
4834 | if (!flush_buf) { | |
4835 | printk(KERN_WARNING | |
4836 | "cciss:%d cache not flushed, out of memory.\n", | |
4837 | h->ctlr); | |
e9ca75b5 | 4838 | return; |
e9ca75b5 | 4839 | } |
29009a03 SC |
4840 | /* write all data in the battery backed cache to disk */ |
4841 | memset(flush_buf, 0, 4); | |
4842 | return_code = sendcmd_withirq(CCISS_CACHE_FLUSH, h->ctlr, flush_buf, | |
4843 | 4, 0, CTLR_LUNID, TYPE_CMD); | |
4844 | kfree(flush_buf); | |
4845 | if (return_code != IO_OK) | |
4846 | printk(KERN_WARNING "cciss%d: Error flushing cache\n", | |
4847 | h->ctlr); | |
4848 | h->access.set_intr_mask(h, CCISS_INTR_OFF); | |
5e216153 | 4849 | free_irq(h->intr[PERF_MODE_INT], h); |
e9ca75b5 GB |
4850 | } |
4851 | ||
4852 | static void __devexit cciss_remove_one(struct pci_dev *pdev) | |
4853 | { | |
4854 | ctlr_info_t *tmp_ptr; | |
4855 | int i, j; | |
4856 | ||
7c832835 BH |
4857 | if (pci_get_drvdata(pdev) == NULL) { |
4858 | printk(KERN_ERR "cciss: Unable to remove device \n"); | |
1da177e4 LT |
4859 | return; |
4860 | } | |
0a9279cc | 4861 | |
1da177e4 LT |
4862 | tmp_ptr = pci_get_drvdata(pdev); |
4863 | i = tmp_ptr->ctlr; | |
7c832835 | 4864 | if (hba[i] == NULL) { |
1da177e4 | 4865 | printk(KERN_ERR "cciss: device appears to " |
7c832835 | 4866 | "already be removed \n"); |
1da177e4 LT |
4867 | return; |
4868 | } | |
b6550777 | 4869 | |
b368c9dd | 4870 | mutex_lock(&hba[i]->busy_shutting_down); |
0a9279cc | 4871 | |
b368c9dd | 4872 | remove_from_scan_list(hba[i]); |
b6550777 BH |
4873 | remove_proc_entry(hba[i]->devname, proc_cciss); |
4874 | unregister_blkdev(hba[i]->major, hba[i]->devname); | |
4875 | ||
4876 | /* remove it from the disk list */ | |
4877 | for (j = 0; j < CISS_MAX_LUN; j++) { | |
4878 | struct gendisk *disk = hba[i]->gendisk[j]; | |
4879 | if (disk) { | |
165125e1 | 4880 | struct request_queue *q = disk->queue; |
b6550777 | 4881 | |
097d0264 | 4882 | if (disk->flags & GENHD_FL_UP) { |
8ce51966 | 4883 | cciss_destroy_ld_sysfs_entry(hba[i], j, 1); |
b6550777 | 4884 | del_gendisk(disk); |
097d0264 | 4885 | } |
b6550777 BH |
4886 | if (q) |
4887 | blk_cleanup_queue(q); | |
4888 | } | |
4889 | } | |
4890 | ||
ba198efb | 4891 | #ifdef CONFIG_CISS_SCSI_TAPE |
b6550777 | 4892 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
ba198efb | 4893 | #endif |
b6550777 | 4894 | |
e9ca75b5 | 4895 | cciss_shutdown(pdev); |
fb86a35b MM |
4896 | |
4897 | #ifdef CONFIG_PCI_MSI | |
7c832835 BH |
4898 | if (hba[i]->msix_vector) |
4899 | pci_disable_msix(hba[i]->pdev); | |
4900 | else if (hba[i]->msi_vector) | |
4901 | pci_disable_msi(hba[i]->pdev); | |
4902 | #endif /* CONFIG_PCI_MSI */ | |
fb86a35b | 4903 | |
da550321 SC |
4904 | iounmap(hba[i]->transtable); |
4905 | iounmap(hba[i]->cfgtable); | |
1da177e4 | 4906 | iounmap(hba[i]->vaddr); |
1da177e4 | 4907 | |
f880632f | 4908 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
1da177e4 | 4909 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
f880632f | 4910 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
7c832835 | 4911 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
1da177e4 | 4912 | kfree(hba[i]->cmd_pool_bits); |
5c07a311 DB |
4913 | /* Free up sg elements */ |
4914 | for (j = 0; j < hba[i]->nr_cmds; j++) | |
4915 | kfree(hba[i]->scatter_list[j]); | |
4916 | kfree(hba[i]->scatter_list); | |
49fc5601 | 4917 | cciss_free_sg_chain_blocks(hba[i]->cmd_sg_list, hba[i]->nr_cmds); |
872225ca MM |
4918 | /* |
4919 | * Deliberately omit pci_disable_device(): it does something nasty to | |
4920 | * Smart Array controllers that pci_enable_device does not undo | |
4921 | */ | |
7c832835 | 4922 | pci_release_regions(pdev); |
4e570309 | 4923 | pci_set_drvdata(pdev, NULL); |
7fe06326 | 4924 | cciss_destroy_hba_sysfs_entry(hba[i]); |
b368c9dd | 4925 | mutex_unlock(&hba[i]->busy_shutting_down); |
1da177e4 | 4926 | free_hba(i); |
7c832835 | 4927 | } |
1da177e4 LT |
4928 | |
4929 | static struct pci_driver cciss_pci_driver = { | |
7c832835 BH |
4930 | .name = "cciss", |
4931 | .probe = cciss_init_one, | |
4932 | .remove = __devexit_p(cciss_remove_one), | |
4933 | .id_table = cciss_pci_device_id, /* id_table */ | |
e9ca75b5 | 4934 | .shutdown = cciss_shutdown, |
1da177e4 LT |
4935 | }; |
4936 | ||
4937 | /* | |
4938 | * This is it. Register the PCI driver information for the cards we control | |
7c832835 | 4939 | * the OS will call our registered routines when it finds one of our cards. |
1da177e4 LT |
4940 | */ |
4941 | static int __init cciss_init(void) | |
4942 | { | |
7fe06326 AP |
4943 | int err; |
4944 | ||
10cbda97 JA |
4945 | /* |
4946 | * The hardware requires that commands are aligned on a 64-bit | |
4947 | * boundary. Given that we use pci_alloc_consistent() to allocate an | |
4948 | * array of them, the size must be a multiple of 8 bytes. | |
4949 | */ | |
1b7d0d28 | 4950 | BUILD_BUG_ON(sizeof(CommandList_struct) % COMMANDLIST_ALIGNMENT); |
1da177e4 LT |
4951 | printk(KERN_INFO DRIVER_NAME "\n"); |
4952 | ||
7fe06326 AP |
4953 | err = bus_register(&cciss_bus_type); |
4954 | if (err) | |
4955 | return err; | |
4956 | ||
b368c9dd AP |
4957 | /* Start the scan thread */ |
4958 | cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan"); | |
4959 | if (IS_ERR(cciss_scan_thread)) { | |
4960 | err = PTR_ERR(cciss_scan_thread); | |
4961 | goto err_bus_unregister; | |
4962 | } | |
4963 | ||
1da177e4 | 4964 | /* Register for our PCI devices */ |
7fe06326 AP |
4965 | err = pci_register_driver(&cciss_pci_driver); |
4966 | if (err) | |
b368c9dd | 4967 | goto err_thread_stop; |
7fe06326 | 4968 | |
617e1344 | 4969 | return err; |
7fe06326 | 4970 | |
b368c9dd AP |
4971 | err_thread_stop: |
4972 | kthread_stop(cciss_scan_thread); | |
4973 | err_bus_unregister: | |
7fe06326 | 4974 | bus_unregister(&cciss_bus_type); |
b368c9dd | 4975 | |
7fe06326 | 4976 | return err; |
1da177e4 LT |
4977 | } |
4978 | ||
4979 | static void __exit cciss_cleanup(void) | |
4980 | { | |
4981 | int i; | |
4982 | ||
4983 | pci_unregister_driver(&cciss_pci_driver); | |
4984 | /* double check that all controller entrys have been removed */ | |
7c832835 BH |
4985 | for (i = 0; i < MAX_CTLR; i++) { |
4986 | if (hba[i] != NULL) { | |
1da177e4 | 4987 | printk(KERN_WARNING "cciss: had to remove" |
7c832835 | 4988 | " controller %d\n", i); |
1da177e4 LT |
4989 | cciss_remove_one(hba[i]->pdev); |
4990 | } | |
4991 | } | |
b368c9dd | 4992 | kthread_stop(cciss_scan_thread); |
928b4d8c | 4993 | remove_proc_entry("driver/cciss", NULL); |
7fe06326 | 4994 | bus_unregister(&cciss_bus_type); |
1da177e4 LT |
4995 | } |
4996 | ||
4997 | module_init(cciss_init); | |
4998 | module_exit(cciss_cleanup); |