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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv |
3 | * Copyright (C) 1992 Eric Youngdale | |
4 | * Simulate a host adapter with 2 disks attached. Do a lot of checking | |
5 | * to make sure that we are not getting blocks mixed up, and PANIC if | |
6 | * anything out of the ordinary is seen. | |
7 | * ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
8 | * | |
9 | * This version is more generic, simulating a variable number of disk | |
23183910 DG |
10 | * (or disk like devices) sharing a common amount of RAM. To be more |
11 | * realistic, the simulated devices have the transport attributes of | |
12 | * SAS disks. | |
1da177e4 LT |
13 | * |
14 | * | |
15 | * For documentation see http://www.torque.net/sg/sdebug26.html | |
16 | * | |
17 | * D. Gilbert (dpg) work for Magneto-Optical device test [20010421] | |
18 | * dpg: work for devfs large number of disks [20010809] | |
19 | * forked for lk 2.5 series [20011216, 20020101] | |
20 | * use vmalloc() more inquiry+mode_sense [20020302] | |
21 | * add timers for delayed responses [20020721] | |
22 | * Patrick Mansfield <patmans@us.ibm.com> max_luns+scsi_level [20021031] | |
23 | * Mike Anderson <andmike@us.ibm.com> sysfs work [20021118] | |
24 | * dpg: change style of boot options to "scsi_debug.num_tgts=2" and | |
25 | * module options to "modprobe scsi_debug num_tgts=2" [20021221] | |
26 | */ | |
27 | ||
1da177e4 LT |
28 | #include <linux/module.h> |
29 | ||
30 | #include <linux/kernel.h> | |
1da177e4 LT |
31 | #include <linux/errno.h> |
32 | #include <linux/timer.h> | |
33 | #include <linux/types.h> | |
34 | #include <linux/string.h> | |
35 | #include <linux/genhd.h> | |
36 | #include <linux/fs.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/proc_fs.h> | |
1da177e4 LT |
39 | #include <linux/vmalloc.h> |
40 | #include <linux/moduleparam.h> | |
852e034d | 41 | #include <linux/scatterlist.h> |
1da177e4 | 42 | #include <linux/blkdev.h> |
c6a44287 MP |
43 | #include <linux/crc-t10dif.h> |
44 | ||
45 | #include <net/checksum.h> | |
9ff26eef FT |
46 | |
47 | #include <scsi/scsi.h> | |
48 | #include <scsi/scsi_cmnd.h> | |
49 | #include <scsi/scsi_device.h> | |
1da177e4 LT |
50 | #include <scsi/scsi_host.h> |
51 | #include <scsi/scsicam.h> | |
a34c4e98 | 52 | #include <scsi/scsi_eh.h> |
395cef03 | 53 | #include <scsi/scsi_dbg.h> |
1da177e4 | 54 | |
c6a44287 | 55 | #include "sd.h" |
1da177e4 | 56 | #include "scsi_logging.h" |
1da177e4 | 57 | |
6f3cbf55 DG |
58 | #define SCSI_DEBUG_VERSION "1.81" |
59 | static const char * scsi_debug_version_date = "20070104"; | |
1da177e4 | 60 | |
6f3cbf55 | 61 | /* Additional Sense Code (ASC) */ |
c65b1445 DG |
62 | #define NO_ADDITIONAL_SENSE 0x0 |
63 | #define LOGICAL_UNIT_NOT_READY 0x4 | |
1da177e4 | 64 | #define UNRECOVERED_READ_ERR 0x11 |
c65b1445 | 65 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
1da177e4 LT |
66 | #define INVALID_OPCODE 0x20 |
67 | #define ADDR_OUT_OF_RANGE 0x21 | |
395cef03 | 68 | #define INVALID_COMMAND_OPCODE 0x20 |
1da177e4 | 69 | #define INVALID_FIELD_IN_CDB 0x24 |
c65b1445 | 70 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
1da177e4 LT |
71 | #define POWERON_RESET 0x29 |
72 | #define SAVING_PARAMS_UNSUP 0x39 | |
6f3cbf55 | 73 | #define TRANSPORT_PROBLEM 0x4b |
c65b1445 DG |
74 | #define THRESHOLD_EXCEEDED 0x5d |
75 | #define LOW_POWER_COND_ON 0x5e | |
1da177e4 | 76 | |
6f3cbf55 DG |
77 | /* Additional Sense Code Qualifier (ASCQ) */ |
78 | #define ACK_NAK_TO 0x3 | |
79 | ||
1da177e4 LT |
80 | #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ |
81 | ||
82 | /* Default values for driver parameters */ | |
83 | #define DEF_NUM_HOST 1 | |
84 | #define DEF_NUM_TGTS 1 | |
85 | #define DEF_MAX_LUNS 1 | |
86 | /* With these defaults, this driver will make 1 host with 1 target | |
87 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. | |
88 | */ | |
89 | #define DEF_DELAY 1 | |
90 | #define DEF_DEV_SIZE_MB 8 | |
91 | #define DEF_EVERY_NTH 0 | |
92 | #define DEF_NUM_PARTS 0 | |
93 | #define DEF_OPTS 0 | |
94 | #define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ | |
95 | #define DEF_PTYPE 0 | |
96 | #define DEF_D_SENSE 0 | |
c65b1445 DG |
97 | #define DEF_NO_LUN_0 0 |
98 | #define DEF_VIRTUAL_GB 0 | |
23183910 DG |
99 | #define DEF_FAKE_RW 0 |
100 | #define DEF_VPD_USE_HOSTNO 1 | |
597136ab | 101 | #define DEF_SECTOR_SIZE 512 |
c6a44287 MP |
102 | #define DEF_DIX 0 |
103 | #define DEF_DIF 0 | |
104 | #define DEF_GUARD 0 | |
105 | #define DEF_ATO 1 | |
ea61fca5 MP |
106 | #define DEF_PHYSBLK_EXP 0 |
107 | #define DEF_LOWEST_ALIGNED 0 | |
1da177e4 LT |
108 | |
109 | /* bit mask values for scsi_debug_opts */ | |
110 | #define SCSI_DEBUG_OPT_NOISE 1 | |
111 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 | |
112 | #define SCSI_DEBUG_OPT_TIMEOUT 4 | |
113 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 | |
6f3cbf55 | 114 | #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
c6a44287 MP |
115 | #define SCSI_DEBUG_OPT_DIF_ERR 32 |
116 | #define SCSI_DEBUG_OPT_DIX_ERR 64 | |
1da177e4 LT |
117 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
118 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
119 | * - a RECOVERED_ERROR is simulated on successful read and write | |
120 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
121 | * - a TRANSPORT_ERROR is simulated on successful read and write |
122 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
123 | * |
124 | * When "every_nth" < 0 then after "- every_nth" commands: | |
125 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
126 | * - a RECOVERED_ERROR is simulated on successful read and write | |
127 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
128 | * - a TRANSPORT_ERROR is simulated on successful read and write |
129 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
130 | * This will continue until some other action occurs (e.g. the user |
131 | * writing a new value (other than -1 or 1) to every_nth via sysfs). | |
132 | */ | |
133 | ||
134 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this | |
135 | * sector on read commands: */ | |
136 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ | |
137 | ||
138 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) | |
139 | * or "peripheral device" addressing (value 0) */ | |
140 | #define SAM2_LUN_ADDRESS_METHOD 0 | |
c65b1445 | 141 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
1da177e4 LT |
142 | |
143 | static int scsi_debug_add_host = DEF_NUM_HOST; | |
144 | static int scsi_debug_delay = DEF_DELAY; | |
145 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; | |
146 | static int scsi_debug_every_nth = DEF_EVERY_NTH; | |
147 | static int scsi_debug_max_luns = DEF_MAX_LUNS; | |
148 | static int scsi_debug_num_parts = DEF_NUM_PARTS; | |
149 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ | |
150 | static int scsi_debug_opts = DEF_OPTS; | |
151 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; | |
152 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ | |
153 | static int scsi_debug_dsense = DEF_D_SENSE; | |
c65b1445 DG |
154 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
155 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; | |
23183910 DG |
156 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
157 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; | |
597136ab | 158 | static int scsi_debug_sector_size = DEF_SECTOR_SIZE; |
c6a44287 MP |
159 | static int scsi_debug_dix = DEF_DIX; |
160 | static int scsi_debug_dif = DEF_DIF; | |
161 | static int scsi_debug_guard = DEF_GUARD; | |
162 | static int scsi_debug_ato = DEF_ATO; | |
ea61fca5 MP |
163 | static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP; |
164 | static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED; | |
1da177e4 LT |
165 | |
166 | static int scsi_debug_cmnd_count = 0; | |
167 | ||
168 | #define DEV_READONLY(TGT) (0) | |
169 | #define DEV_REMOVEABLE(TGT) (0) | |
170 | ||
c65b1445 | 171 | static unsigned int sdebug_store_sectors; |
1da177e4 LT |
172 | static sector_t sdebug_capacity; /* in sectors */ |
173 | ||
174 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages | |
175 | may still need them */ | |
176 | static int sdebug_heads; /* heads per disk */ | |
177 | static int sdebug_cylinders_per; /* cylinders per surface */ | |
178 | static int sdebug_sectors_per; /* sectors per cylinder */ | |
179 | ||
1da177e4 LT |
180 | #define SDEBUG_MAX_PARTS 4 |
181 | ||
182 | #define SDEBUG_SENSE_LEN 32 | |
183 | ||
9e603ca0 | 184 | #define SCSI_DEBUG_CANQUEUE 255 |
395cef03 | 185 | #define SCSI_DEBUG_MAX_CMD_LEN 32 |
9e603ca0 | 186 | |
1da177e4 LT |
187 | struct sdebug_dev_info { |
188 | struct list_head dev_list; | |
189 | unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ | |
190 | unsigned int channel; | |
191 | unsigned int target; | |
192 | unsigned int lun; | |
193 | struct sdebug_host_info *sdbg_host; | |
c65b1445 | 194 | unsigned int wlun; |
1da177e4 | 195 | char reset; |
c65b1445 | 196 | char stopped; |
1da177e4 LT |
197 | char used; |
198 | }; | |
199 | ||
200 | struct sdebug_host_info { | |
201 | struct list_head host_list; | |
202 | struct Scsi_Host *shost; | |
203 | struct device dev; | |
204 | struct list_head dev_info_list; | |
205 | }; | |
206 | ||
207 | #define to_sdebug_host(d) \ | |
208 | container_of(d, struct sdebug_host_info, dev) | |
209 | ||
210 | static LIST_HEAD(sdebug_host_list); | |
211 | static DEFINE_SPINLOCK(sdebug_host_list_lock); | |
212 | ||
213 | typedef void (* done_funct_t) (struct scsi_cmnd *); | |
214 | ||
215 | struct sdebug_queued_cmd { | |
216 | int in_use; | |
217 | struct timer_list cmnd_timer; | |
218 | done_funct_t done_funct; | |
219 | struct scsi_cmnd * a_cmnd; | |
220 | int scsi_result; | |
221 | }; | |
222 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; | |
223 | ||
1da177e4 | 224 | static unsigned char * fake_storep; /* ramdisk storage */ |
c6a44287 | 225 | static unsigned char *dif_storep; /* protection info */ |
1da177e4 LT |
226 | |
227 | static int num_aborts = 0; | |
228 | static int num_dev_resets = 0; | |
229 | static int num_bus_resets = 0; | |
230 | static int num_host_resets = 0; | |
c6a44287 MP |
231 | static int dix_writes; |
232 | static int dix_reads; | |
233 | static int dif_errors; | |
1da177e4 LT |
234 | |
235 | static DEFINE_SPINLOCK(queued_arr_lock); | |
236 | static DEFINE_RWLOCK(atomic_rw); | |
237 | ||
238 | static char sdebug_proc_name[] = "scsi_debug"; | |
239 | ||
1da177e4 LT |
240 | static struct bus_type pseudo_lld_bus; |
241 | ||
c6a44287 MP |
242 | static inline sector_t dif_offset(sector_t sector) |
243 | { | |
244 | return sector << 3; | |
245 | } | |
246 | ||
1da177e4 LT |
247 | static struct device_driver sdebug_driverfs_driver = { |
248 | .name = sdebug_proc_name, | |
249 | .bus = &pseudo_lld_bus, | |
1da177e4 LT |
250 | }; |
251 | ||
252 | static const int check_condition_result = | |
253 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | |
254 | ||
c6a44287 MP |
255 | static const int illegal_condition_result = |
256 | (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; | |
257 | ||
c65b1445 DG |
258 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
259 | 0, 0, 0x2, 0x4b}; | |
260 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
261 | 0, 0, 0x0, 0x0}; | |
262 | ||
1da177e4 LT |
263 | static int sdebug_add_adapter(void); |
264 | static void sdebug_remove_adapter(void); | |
1da177e4 | 265 | |
8dea0d02 FT |
266 | static void sdebug_max_tgts_luns(void) |
267 | { | |
268 | struct sdebug_host_info *sdbg_host; | |
269 | struct Scsi_Host *hpnt; | |
270 | ||
271 | spin_lock(&sdebug_host_list_lock); | |
272 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
273 | hpnt = sdbg_host->shost; | |
274 | if ((hpnt->this_id >= 0) && | |
275 | (scsi_debug_num_tgts > hpnt->this_id)) | |
276 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
277 | else | |
278 | hpnt->max_id = scsi_debug_num_tgts; | |
279 | /* scsi_debug_max_luns; */ | |
280 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; | |
281 | } | |
282 | spin_unlock(&sdebug_host_list_lock); | |
283 | } | |
284 | ||
285 | static void mk_sense_buffer(struct sdebug_dev_info *devip, int key, | |
286 | int asc, int asq) | |
287 | { | |
288 | unsigned char *sbuff; | |
289 | ||
290 | sbuff = devip->sense_buff; | |
291 | memset(sbuff, 0, SDEBUG_SENSE_LEN); | |
292 | ||
293 | scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); | |
294 | ||
295 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
296 | printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " | |
297 | "[0x%x,0x%x,0x%x]\n", key, asc, asq); | |
298 | } | |
1da177e4 | 299 | |
3de9f944 | 300 | static void get_data_transfer_info(unsigned char *cmd, |
395cef03 MP |
301 | unsigned long long *lba, unsigned int *num, |
302 | u32 *ei_lba) | |
3de9f944 | 303 | { |
395cef03 MP |
304 | *ei_lba = 0; |
305 | ||
3de9f944 | 306 | switch (*cmd) { |
395cef03 MP |
307 | case VARIABLE_LENGTH_CMD: |
308 | *lba = (u64)cmd[19] | (u64)cmd[18] << 8 | | |
309 | (u64)cmd[17] << 16 | (u64)cmd[16] << 24 | | |
310 | (u64)cmd[15] << 32 | (u64)cmd[14] << 40 | | |
311 | (u64)cmd[13] << 48 | (u64)cmd[12] << 56; | |
312 | ||
313 | *ei_lba = (u32)cmd[23] | (u32)cmd[22] << 8 | | |
314 | (u32)cmd[21] << 16 | (u32)cmd[20] << 24; | |
315 | ||
316 | *num = (u32)cmd[31] | (u32)cmd[30] << 8 | (u32)cmd[29] << 16 | | |
317 | (u32)cmd[28] << 24; | |
318 | break; | |
319 | ||
3de9f944 FT |
320 | case WRITE_16: |
321 | case READ_16: | |
d5cdc989 FT |
322 | *lba = (u64)cmd[9] | (u64)cmd[8] << 8 | |
323 | (u64)cmd[7] << 16 | (u64)cmd[6] << 24 | | |
324 | (u64)cmd[5] << 32 | (u64)cmd[4] << 40 | | |
325 | (u64)cmd[3] << 48 | (u64)cmd[2] << 56; | |
326 | ||
327 | *num = (u32)cmd[13] | (u32)cmd[12] << 8 | (u32)cmd[11] << 16 | | |
328 | (u32)cmd[10] << 24; | |
3de9f944 FT |
329 | break; |
330 | case WRITE_12: | |
331 | case READ_12: | |
d5cdc989 FT |
332 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
333 | (u32)cmd[2] << 24; | |
334 | ||
335 | *num = (u32)cmd[9] | (u32)cmd[8] << 8 | (u32)cmd[7] << 16 | | |
336 | (u32)cmd[6] << 24; | |
3de9f944 FT |
337 | break; |
338 | case WRITE_10: | |
339 | case READ_10: | |
c639d14e | 340 | case XDWRITEREAD_10: |
d5cdc989 FT |
341 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
342 | (u32)cmd[2] << 24; | |
343 | ||
344 | *num = (u32)cmd[8] | (u32)cmd[7] << 8; | |
3de9f944 FT |
345 | break; |
346 | case WRITE_6: | |
347 | case READ_6: | |
d5cdc989 FT |
348 | *lba = (u32)cmd[3] | (u32)cmd[2] << 8 | |
349 | (u32)(cmd[1] & 0x1f) << 16; | |
3de9f944 FT |
350 | *num = (0 == cmd[4]) ? 256 : cmd[4]; |
351 | break; | |
352 | default: | |
353 | break; | |
354 | } | |
355 | } | |
1da177e4 | 356 | |
1da177e4 LT |
357 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
358 | { | |
359 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
360 | printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); | |
361 | } | |
362 | return -EINVAL; | |
363 | /* return -ENOTTY; // correct return but upsets fdisk */ | |
364 | } | |
365 | ||
c65b1445 DG |
366 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
367 | struct sdebug_dev_info * devip) | |
1da177e4 LT |
368 | { |
369 | if (devip->reset) { | |
370 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
371 | printk(KERN_INFO "scsi_debug: Reporting Unit " | |
372 | "attention: power on reset\n"); | |
373 | devip->reset = 0; | |
374 | mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); | |
375 | return check_condition_result; | |
376 | } | |
c65b1445 DG |
377 | if ((0 == reset_only) && devip->stopped) { |
378 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
379 | printk(KERN_INFO "scsi_debug: Reporting Not " | |
380 | "ready: initializing command required\n"); | |
381 | mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, | |
382 | 0x2); | |
383 | return check_condition_result; | |
384 | } | |
1da177e4 LT |
385 | return 0; |
386 | } | |
387 | ||
388 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ | |
21a61829 | 389 | static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
1da177e4 LT |
390 | int arr_len) |
391 | { | |
21a61829 | 392 | int act_len; |
072d0bb3 | 393 | struct scsi_data_buffer *sdb = scsi_in(scp); |
1da177e4 | 394 | |
072d0bb3 | 395 | if (!sdb->length) |
1da177e4 | 396 | return 0; |
072d0bb3 | 397 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
1da177e4 | 398 | return (DID_ERROR << 16); |
21a61829 FT |
399 | |
400 | act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, | |
401 | arr, arr_len); | |
072d0bb3 FT |
402 | if (sdb->resid) |
403 | sdb->resid -= act_len; | |
c65b1445 | 404 | else |
21a61829 FT |
405 | sdb->resid = scsi_bufflen(scp) - act_len; |
406 | ||
1da177e4 LT |
407 | return 0; |
408 | } | |
409 | ||
410 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ | |
21a61829 FT |
411 | static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
412 | int arr_len) | |
1da177e4 | 413 | { |
21a61829 | 414 | if (!scsi_bufflen(scp)) |
1da177e4 | 415 | return 0; |
072d0bb3 | 416 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
1da177e4 | 417 | return -1; |
21a61829 FT |
418 | |
419 | return scsi_sg_copy_to_buffer(scp, arr, arr_len); | |
1da177e4 LT |
420 | } |
421 | ||
422 | ||
423 | static const char * inq_vendor_id = "Linux "; | |
424 | static const char * inq_product_id = "scsi_debug "; | |
425 | static const char * inq_product_rev = "0004"; | |
426 | ||
5a09e398 HR |
427 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
428 | int target_dev_id, int dev_id_num, | |
429 | const char * dev_id_str, | |
c65b1445 | 430 | int dev_id_str_len) |
1da177e4 | 431 | { |
c65b1445 DG |
432 | int num, port_a; |
433 | char b[32]; | |
1da177e4 | 434 | |
c65b1445 | 435 | port_a = target_dev_id + 1; |
1da177e4 LT |
436 | /* T10 vendor identifier field format (faked) */ |
437 | arr[0] = 0x2; /* ASCII */ | |
438 | arr[1] = 0x1; | |
439 | arr[2] = 0x0; | |
440 | memcpy(&arr[4], inq_vendor_id, 8); | |
441 | memcpy(&arr[12], inq_product_id, 16); | |
442 | memcpy(&arr[28], dev_id_str, dev_id_str_len); | |
443 | num = 8 + 16 + dev_id_str_len; | |
444 | arr[3] = num; | |
445 | num += 4; | |
c65b1445 DG |
446 | if (dev_id_num >= 0) { |
447 | /* NAA-5, Logical unit identifier (binary) */ | |
448 | arr[num++] = 0x1; /* binary (not necessarily sas) */ | |
449 | arr[num++] = 0x3; /* PIV=0, lu, naa */ | |
450 | arr[num++] = 0x0; | |
451 | arr[num++] = 0x8; | |
452 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ | |
453 | arr[num++] = 0x33; | |
454 | arr[num++] = 0x33; | |
455 | arr[num++] = 0x30; | |
456 | arr[num++] = (dev_id_num >> 24); | |
457 | arr[num++] = (dev_id_num >> 16) & 0xff; | |
458 | arr[num++] = (dev_id_num >> 8) & 0xff; | |
459 | arr[num++] = dev_id_num & 0xff; | |
460 | /* Target relative port number */ | |
461 | arr[num++] = 0x61; /* proto=sas, binary */ | |
462 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ | |
463 | arr[num++] = 0x0; /* reserved */ | |
464 | arr[num++] = 0x4; /* length */ | |
465 | arr[num++] = 0x0; /* reserved */ | |
466 | arr[num++] = 0x0; /* reserved */ | |
467 | arr[num++] = 0x0; | |
468 | arr[num++] = 0x1; /* relative port A */ | |
469 | } | |
470 | /* NAA-5, Target port identifier */ | |
471 | arr[num++] = 0x61; /* proto=sas, binary */ | |
472 | arr[num++] = 0x93; /* piv=1, target port, naa */ | |
473 | arr[num++] = 0x0; | |
474 | arr[num++] = 0x8; | |
475 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
476 | arr[num++] = 0x22; | |
477 | arr[num++] = 0x22; | |
478 | arr[num++] = 0x20; | |
479 | arr[num++] = (port_a >> 24); | |
480 | arr[num++] = (port_a >> 16) & 0xff; | |
481 | arr[num++] = (port_a >> 8) & 0xff; | |
482 | arr[num++] = port_a & 0xff; | |
5a09e398 HR |
483 | /* NAA-5, Target port group identifier */ |
484 | arr[num++] = 0x61; /* proto=sas, binary */ | |
485 | arr[num++] = 0x95; /* piv=1, target port group id */ | |
486 | arr[num++] = 0x0; | |
487 | arr[num++] = 0x4; | |
488 | arr[num++] = 0; | |
489 | arr[num++] = 0; | |
490 | arr[num++] = (port_group_id >> 8) & 0xff; | |
491 | arr[num++] = port_group_id & 0xff; | |
c65b1445 DG |
492 | /* NAA-5, Target device identifier */ |
493 | arr[num++] = 0x61; /* proto=sas, binary */ | |
494 | arr[num++] = 0xa3; /* piv=1, target device, naa */ | |
495 | arr[num++] = 0x0; | |
496 | arr[num++] = 0x8; | |
497 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
498 | arr[num++] = 0x22; | |
499 | arr[num++] = 0x22; | |
500 | arr[num++] = 0x20; | |
501 | arr[num++] = (target_dev_id >> 24); | |
502 | arr[num++] = (target_dev_id >> 16) & 0xff; | |
503 | arr[num++] = (target_dev_id >> 8) & 0xff; | |
504 | arr[num++] = target_dev_id & 0xff; | |
505 | /* SCSI name string: Target device identifier */ | |
506 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ | |
507 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ | |
508 | arr[num++] = 0x0; | |
509 | arr[num++] = 24; | |
510 | memcpy(arr + num, "naa.52222220", 12); | |
511 | num += 12; | |
512 | snprintf(b, sizeof(b), "%08X", target_dev_id); | |
513 | memcpy(arr + num, b, 8); | |
514 | num += 8; | |
515 | memset(arr + num, 0, 4); | |
516 | num += 4; | |
517 | return num; | |
518 | } | |
519 | ||
520 | ||
521 | static unsigned char vpd84_data[] = { | |
522 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, | |
523 | 0x22,0x22,0x22,0x0,0xbb,0x1, | |
524 | 0x22,0x22,0x22,0x0,0xbb,0x2, | |
525 | }; | |
526 | ||
527 | static int inquiry_evpd_84(unsigned char * arr) | |
528 | { | |
529 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); | |
530 | return sizeof(vpd84_data); | |
531 | } | |
532 | ||
533 | static int inquiry_evpd_85(unsigned char * arr) | |
534 | { | |
535 | int num = 0; | |
536 | const char * na1 = "https://www.kernel.org/config"; | |
537 | const char * na2 = "http://www.kernel.org/log"; | |
538 | int plen, olen; | |
539 | ||
540 | arr[num++] = 0x1; /* lu, storage config */ | |
541 | arr[num++] = 0x0; /* reserved */ | |
542 | arr[num++] = 0x0; | |
543 | olen = strlen(na1); | |
544 | plen = olen + 1; | |
545 | if (plen % 4) | |
546 | plen = ((plen / 4) + 1) * 4; | |
547 | arr[num++] = plen; /* length, null termianted, padded */ | |
548 | memcpy(arr + num, na1, olen); | |
549 | memset(arr + num + olen, 0, plen - olen); | |
550 | num += plen; | |
551 | ||
552 | arr[num++] = 0x4; /* lu, logging */ | |
553 | arr[num++] = 0x0; /* reserved */ | |
554 | arr[num++] = 0x0; | |
555 | olen = strlen(na2); | |
556 | plen = olen + 1; | |
557 | if (plen % 4) | |
558 | plen = ((plen / 4) + 1) * 4; | |
559 | arr[num++] = plen; /* length, null terminated, padded */ | |
560 | memcpy(arr + num, na2, olen); | |
561 | memset(arr + num + olen, 0, plen - olen); | |
562 | num += plen; | |
563 | ||
564 | return num; | |
565 | } | |
566 | ||
567 | /* SCSI ports VPD page */ | |
568 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) | |
569 | { | |
570 | int num = 0; | |
571 | int port_a, port_b; | |
572 | ||
573 | port_a = target_dev_id + 1; | |
574 | port_b = port_a + 1; | |
575 | arr[num++] = 0x0; /* reserved */ | |
576 | arr[num++] = 0x0; /* reserved */ | |
577 | arr[num++] = 0x0; | |
578 | arr[num++] = 0x1; /* relative port 1 (primary) */ | |
579 | memset(arr + num, 0, 6); | |
580 | num += 6; | |
581 | arr[num++] = 0x0; | |
582 | arr[num++] = 12; /* length tp descriptor */ | |
583 | /* naa-5 target port identifier (A) */ | |
584 | arr[num++] = 0x61; /* proto=sas, binary */ | |
585 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
586 | arr[num++] = 0x0; /* reserved */ | |
587 | arr[num++] = 0x8; /* length */ | |
588 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
589 | arr[num++] = 0x22; | |
590 | arr[num++] = 0x22; | |
591 | arr[num++] = 0x20; | |
592 | arr[num++] = (port_a >> 24); | |
593 | arr[num++] = (port_a >> 16) & 0xff; | |
594 | arr[num++] = (port_a >> 8) & 0xff; | |
595 | arr[num++] = port_a & 0xff; | |
596 | ||
597 | arr[num++] = 0x0; /* reserved */ | |
598 | arr[num++] = 0x0; /* reserved */ | |
599 | arr[num++] = 0x0; | |
600 | arr[num++] = 0x2; /* relative port 2 (secondary) */ | |
601 | memset(arr + num, 0, 6); | |
602 | num += 6; | |
603 | arr[num++] = 0x0; | |
604 | arr[num++] = 12; /* length tp descriptor */ | |
605 | /* naa-5 target port identifier (B) */ | |
606 | arr[num++] = 0x61; /* proto=sas, binary */ | |
607 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
608 | arr[num++] = 0x0; /* reserved */ | |
609 | arr[num++] = 0x8; /* length */ | |
610 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
611 | arr[num++] = 0x22; | |
612 | arr[num++] = 0x22; | |
613 | arr[num++] = 0x20; | |
614 | arr[num++] = (port_b >> 24); | |
615 | arr[num++] = (port_b >> 16) & 0xff; | |
616 | arr[num++] = (port_b >> 8) & 0xff; | |
617 | arr[num++] = port_b & 0xff; | |
618 | ||
619 | return num; | |
620 | } | |
621 | ||
622 | ||
623 | static unsigned char vpd89_data[] = { | |
624 | /* from 4th byte */ 0,0,0,0, | |
625 | 'l','i','n','u','x',' ',' ',' ', | |
626 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', | |
627 | '1','2','3','4', | |
628 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, | |
629 | 0xec,0,0,0, | |
630 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, | |
631 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, | |
632 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, | |
633 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, | |
634 | 0x53,0x41, | |
635 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
636 | 0x20,0x20, | |
637 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
638 | 0x10,0x80, | |
639 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, | |
640 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, | |
641 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, | |
642 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, | |
643 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, | |
644 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, | |
645 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, | |
646 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
647 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
648 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
649 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, | |
650 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, | |
651 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, | |
652 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, | |
653 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
654 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
655 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
656 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
657 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
658 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
659 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
660 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
661 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
662 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
663 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
664 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, | |
665 | }; | |
666 | ||
667 | static int inquiry_evpd_89(unsigned char * arr) | |
668 | { | |
669 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); | |
670 | return sizeof(vpd89_data); | |
671 | } | |
672 | ||
673 | ||
674 | static unsigned char vpdb0_data[] = { | |
675 | /* from 4th byte */ 0,0,0,4, | |
676 | 0,0,0x4,0, | |
677 | 0,0,0,64, | |
678 | }; | |
679 | ||
680 | static int inquiry_evpd_b0(unsigned char * arr) | |
681 | { | |
ea61fca5 MP |
682 | unsigned int gran; |
683 | ||
c65b1445 | 684 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
ea61fca5 MP |
685 | gran = 1 << scsi_debug_physblk_exp; |
686 | arr[2] = (gran >> 8) & 0xff; | |
687 | arr[3] = gran & 0xff; | |
c65b1445 DG |
688 | if (sdebug_store_sectors > 0x400) { |
689 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; | |
690 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; | |
691 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; | |
692 | arr[7] = sdebug_store_sectors & 0xff; | |
693 | } | |
694 | return sizeof(vpdb0_data); | |
1da177e4 LT |
695 | } |
696 | ||
eac6e8e4 MW |
697 | static int inquiry_evpd_b1(unsigned char *arr) |
698 | { | |
699 | memset(arr, 0, 0x3c); | |
700 | arr[0] = 0; | |
701 | arr[1] = 1; | |
702 | ||
703 | return 0x3c; | |
704 | } | |
1da177e4 LT |
705 | |
706 | #define SDEBUG_LONG_INQ_SZ 96 | |
c65b1445 | 707 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
1da177e4 LT |
708 | |
709 | static int resp_inquiry(struct scsi_cmnd * scp, int target, | |
710 | struct sdebug_dev_info * devip) | |
711 | { | |
712 | unsigned char pq_pdt; | |
5a09e398 | 713 | unsigned char * arr; |
1da177e4 | 714 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
5a09e398 | 715 | int alloc_len, n, ret; |
1da177e4 LT |
716 | |
717 | alloc_len = (cmd[3] << 8) + cmd[4]; | |
6f3cbf55 DG |
718 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
719 | if (! arr) | |
720 | return DID_REQUEUE << 16; | |
c65b1445 DG |
721 | if (devip->wlun) |
722 | pq_pdt = 0x1e; /* present, wlun */ | |
723 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) | |
724 | pq_pdt = 0x7f; /* not present, no device type */ | |
725 | else | |
726 | pq_pdt = (scsi_debug_ptype & 0x1f); | |
1da177e4 LT |
727 | arr[0] = pq_pdt; |
728 | if (0x2 & cmd[1]) { /* CMDDT bit set */ | |
729 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
730 | 0); | |
5a09e398 | 731 | kfree(arr); |
1da177e4 LT |
732 | return check_condition_result; |
733 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ | |
5a09e398 | 734 | int lu_id_num, port_group_id, target_dev_id, len; |
c65b1445 DG |
735 | char lu_id_str[6]; |
736 | int host_no = devip->sdbg_host->shost->host_no; | |
1da177e4 | 737 | |
5a09e398 HR |
738 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
739 | (devip->channel & 0x7f); | |
23183910 DG |
740 | if (0 == scsi_debug_vpd_use_hostno) |
741 | host_no = 0; | |
c65b1445 DG |
742 | lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
743 | (devip->target * 1000) + devip->lun); | |
744 | target_dev_id = ((host_no + 1) * 2000) + | |
745 | (devip->target * 1000) - 3; | |
746 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); | |
1da177e4 | 747 | if (0 == cmd[2]) { /* supported vital product data pages */ |
c65b1445 DG |
748 | arr[1] = cmd[2]; /*sanity */ |
749 | n = 4; | |
750 | arr[n++] = 0x0; /* this page */ | |
751 | arr[n++] = 0x80; /* unit serial number */ | |
752 | arr[n++] = 0x83; /* device identification */ | |
753 | arr[n++] = 0x84; /* software interface ident. */ | |
754 | arr[n++] = 0x85; /* management network addresses */ | |
755 | arr[n++] = 0x86; /* extended inquiry */ | |
756 | arr[n++] = 0x87; /* mode page policy */ | |
757 | arr[n++] = 0x88; /* SCSI ports */ | |
758 | arr[n++] = 0x89; /* ATA information */ | |
759 | arr[n++] = 0xb0; /* Block limits (SBC) */ | |
eac6e8e4 | 760 | arr[n++] = 0xb1; /* Block characteristics (SBC) */ |
c65b1445 | 761 | arr[3] = n - 4; /* number of supported VPD pages */ |
1da177e4 | 762 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
c65b1445 | 763 | arr[1] = cmd[2]; /*sanity */ |
1da177e4 | 764 | arr[3] = len; |
c65b1445 | 765 | memcpy(&arr[4], lu_id_str, len); |
1da177e4 | 766 | } else if (0x83 == cmd[2]) { /* device identification */ |
c65b1445 | 767 | arr[1] = cmd[2]; /*sanity */ |
5a09e398 HR |
768 | arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
769 | target_dev_id, lu_id_num, | |
770 | lu_id_str, len); | |
c65b1445 DG |
771 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
772 | arr[1] = cmd[2]; /*sanity */ | |
773 | arr[3] = inquiry_evpd_84(&arr[4]); | |
774 | } else if (0x85 == cmd[2]) { /* Management network addresses */ | |
775 | arr[1] = cmd[2]; /*sanity */ | |
776 | arr[3] = inquiry_evpd_85(&arr[4]); | |
777 | } else if (0x86 == cmd[2]) { /* extended inquiry */ | |
778 | arr[1] = cmd[2]; /*sanity */ | |
779 | arr[3] = 0x3c; /* number of following entries */ | |
c6a44287 MP |
780 | if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) |
781 | arr[4] = 0x4; /* SPT: GRD_CHK:1 */ | |
782 | else if (scsi_debug_dif) | |
783 | arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ | |
784 | else | |
785 | arr[4] = 0x0; /* no protection stuff */ | |
c65b1445 DG |
786 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
787 | } else if (0x87 == cmd[2]) { /* mode page policy */ | |
788 | arr[1] = cmd[2]; /*sanity */ | |
789 | arr[3] = 0x8; /* number of following entries */ | |
790 | arr[4] = 0x2; /* disconnect-reconnect mp */ | |
791 | arr[6] = 0x80; /* mlus, shared */ | |
792 | arr[8] = 0x18; /* protocol specific lu */ | |
793 | arr[10] = 0x82; /* mlus, per initiator port */ | |
794 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ | |
795 | arr[1] = cmd[2]; /*sanity */ | |
796 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); | |
797 | } else if (0x89 == cmd[2]) { /* ATA information */ | |
798 | arr[1] = cmd[2]; /*sanity */ | |
799 | n = inquiry_evpd_89(&arr[4]); | |
800 | arr[2] = (n >> 8); | |
801 | arr[3] = (n & 0xff); | |
802 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ | |
803 | arr[1] = cmd[2]; /*sanity */ | |
804 | arr[3] = inquiry_evpd_b0(&arr[4]); | |
eac6e8e4 MW |
805 | } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */ |
806 | arr[1] = cmd[2]; /*sanity */ | |
807 | arr[3] = inquiry_evpd_b1(&arr[4]); | |
1da177e4 LT |
808 | } else { |
809 | /* Illegal request, invalid field in cdb */ | |
810 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
811 | INVALID_FIELD_IN_CDB, 0); | |
5a09e398 | 812 | kfree(arr); |
1da177e4 LT |
813 | return check_condition_result; |
814 | } | |
c65b1445 | 815 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
5a09e398 | 816 | ret = fill_from_dev_buffer(scp, arr, |
c65b1445 | 817 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
5a09e398 HR |
818 | kfree(arr); |
819 | return ret; | |
1da177e4 LT |
820 | } |
821 | /* drops through here for a standard inquiry */ | |
822 | arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */ | |
823 | arr[2] = scsi_debug_scsi_level; | |
824 | arr[3] = 2; /* response_data_format==2 */ | |
825 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; | |
c6a44287 | 826 | arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */ |
5a09e398 HR |
827 | if (0 == scsi_debug_vpd_use_hostno) |
828 | arr[5] = 0x10; /* claim: implicit TGPS */ | |
c65b1445 | 829 | arr[6] = 0x10; /* claim: MultiP */ |
1da177e4 | 830 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
c65b1445 | 831 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
1da177e4 LT |
832 | memcpy(&arr[8], inq_vendor_id, 8); |
833 | memcpy(&arr[16], inq_product_id, 16); | |
834 | memcpy(&arr[32], inq_product_rev, 4); | |
835 | /* version descriptors (2 bytes each) follow */ | |
c65b1445 DG |
836 | arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ |
837 | arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ | |
838 | n = 62; | |
1da177e4 | 839 | if (scsi_debug_ptype == 0) { |
c65b1445 | 840 | arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ |
1da177e4 | 841 | } else if (scsi_debug_ptype == 1) { |
c65b1445 | 842 | arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ |
1da177e4 | 843 | } |
c65b1445 | 844 | arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ |
5a09e398 | 845 | ret = fill_from_dev_buffer(scp, arr, |
1da177e4 | 846 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
5a09e398 HR |
847 | kfree(arr); |
848 | return ret; | |
1da177e4 LT |
849 | } |
850 | ||
851 | static int resp_requests(struct scsi_cmnd * scp, | |
852 | struct sdebug_dev_info * devip) | |
853 | { | |
854 | unsigned char * sbuff; | |
855 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
856 | unsigned char arr[SDEBUG_SENSE_LEN]; | |
c65b1445 | 857 | int want_dsense; |
1da177e4 LT |
858 | int len = 18; |
859 | ||
c65b1445 | 860 | memset(arr, 0, sizeof(arr)); |
1da177e4 | 861 | if (devip->reset == 1) |
c65b1445 DG |
862 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
863 | want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; | |
1da177e4 | 864 | sbuff = devip->sense_buff; |
c65b1445 DG |
865 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
866 | if (want_dsense) { | |
867 | arr[0] = 0x72; | |
868 | arr[1] = 0x0; /* NO_SENSE in sense_key */ | |
869 | arr[2] = THRESHOLD_EXCEEDED; | |
870 | arr[3] = 0xff; /* TEST set and MRIE==6 */ | |
871 | } else { | |
872 | arr[0] = 0x70; | |
873 | arr[2] = 0x0; /* NO_SENSE in sense_key */ | |
874 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
875 | arr[12] = THRESHOLD_EXCEEDED; | |
876 | arr[13] = 0xff; /* TEST set and MRIE==6 */ | |
877 | } | |
c65b1445 | 878 | } else { |
1da177e4 | 879 | memcpy(arr, sbuff, SDEBUG_SENSE_LEN); |
c65b1445 DG |
880 | if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
881 | /* DESC bit set and sense_buff in fixed format */ | |
882 | memset(arr, 0, sizeof(arr)); | |
883 | arr[0] = 0x72; | |
884 | arr[1] = sbuff[2]; /* sense key */ | |
885 | arr[2] = sbuff[12]; /* asc */ | |
886 | arr[3] = sbuff[13]; /* ascq */ | |
887 | len = 8; | |
888 | } | |
889 | } | |
890 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); | |
1da177e4 LT |
891 | return fill_from_dev_buffer(scp, arr, len); |
892 | } | |
893 | ||
c65b1445 DG |
894 | static int resp_start_stop(struct scsi_cmnd * scp, |
895 | struct sdebug_dev_info * devip) | |
896 | { | |
897 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
898 | int power_cond, errsts, start; | |
899 | ||
900 | if ((errsts = check_readiness(scp, 1, devip))) | |
901 | return errsts; | |
902 | power_cond = (cmd[4] & 0xf0) >> 4; | |
903 | if (power_cond) { | |
904 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
905 | 0); | |
906 | return check_condition_result; | |
907 | } | |
908 | start = cmd[4] & 1; | |
909 | if (start == devip->stopped) | |
910 | devip->stopped = !start; | |
911 | return 0; | |
912 | } | |
913 | ||
28898873 FT |
914 | static sector_t get_sdebug_capacity(void) |
915 | { | |
916 | if (scsi_debug_virtual_gb > 0) | |
73da9c13 | 917 | return 2048 * 1024 * (sector_t)scsi_debug_virtual_gb; |
28898873 FT |
918 | else |
919 | return sdebug_store_sectors; | |
920 | } | |
921 | ||
1da177e4 LT |
922 | #define SDEBUG_READCAP_ARR_SZ 8 |
923 | static int resp_readcap(struct scsi_cmnd * scp, | |
924 | struct sdebug_dev_info * devip) | |
925 | { | |
926 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; | |
c65b1445 | 927 | unsigned int capac; |
1da177e4 LT |
928 | int errsts; |
929 | ||
c65b1445 | 930 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 | 931 | return errsts; |
c65b1445 | 932 | /* following just in case virtual_gb changed */ |
28898873 | 933 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 | 934 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
c65b1445 DG |
935 | if (sdebug_capacity < 0xffffffff) { |
936 | capac = (unsigned int)sdebug_capacity - 1; | |
937 | arr[0] = (capac >> 24); | |
938 | arr[1] = (capac >> 16) & 0xff; | |
939 | arr[2] = (capac >> 8) & 0xff; | |
940 | arr[3] = capac & 0xff; | |
941 | } else { | |
942 | arr[0] = 0xff; | |
943 | arr[1] = 0xff; | |
944 | arr[2] = 0xff; | |
945 | arr[3] = 0xff; | |
946 | } | |
597136ab MP |
947 | arr[6] = (scsi_debug_sector_size >> 8) & 0xff; |
948 | arr[7] = scsi_debug_sector_size & 0xff; | |
1da177e4 LT |
949 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
950 | } | |
951 | ||
c65b1445 DG |
952 | #define SDEBUG_READCAP16_ARR_SZ 32 |
953 | static int resp_readcap16(struct scsi_cmnd * scp, | |
954 | struct sdebug_dev_info * devip) | |
955 | { | |
956 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
957 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; | |
958 | unsigned long long capac; | |
959 | int errsts, k, alloc_len; | |
960 | ||
961 | if ((errsts = check_readiness(scp, 1, devip))) | |
962 | return errsts; | |
963 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) | |
964 | + cmd[13]); | |
965 | /* following just in case virtual_gb changed */ | |
28898873 | 966 | sdebug_capacity = get_sdebug_capacity(); |
c65b1445 DG |
967 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
968 | capac = sdebug_capacity - 1; | |
969 | for (k = 0; k < 8; ++k, capac >>= 8) | |
970 | arr[7 - k] = capac & 0xff; | |
597136ab MP |
971 | arr[8] = (scsi_debug_sector_size >> 24) & 0xff; |
972 | arr[9] = (scsi_debug_sector_size >> 16) & 0xff; | |
973 | arr[10] = (scsi_debug_sector_size >> 8) & 0xff; | |
974 | arr[11] = scsi_debug_sector_size & 0xff; | |
ea61fca5 MP |
975 | arr[13] = scsi_debug_physblk_exp & 0xf; |
976 | arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f; | |
977 | arr[15] = scsi_debug_lowest_aligned & 0xff; | |
c6a44287 MP |
978 | |
979 | if (scsi_debug_dif) { | |
980 | arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */ | |
981 | arr[12] |= 1; /* PROT_EN */ | |
982 | } | |
983 | ||
c65b1445 DG |
984 | return fill_from_dev_buffer(scp, arr, |
985 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); | |
986 | } | |
987 | ||
5a09e398 HR |
988 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
989 | ||
990 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, | |
991 | struct sdebug_dev_info * devip) | |
992 | { | |
993 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
994 | unsigned char * arr; | |
995 | int host_no = devip->sdbg_host->shost->host_no; | |
996 | int n, ret, alen, rlen; | |
997 | int port_group_a, port_group_b, port_a, port_b; | |
998 | ||
999 | alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) | |
1000 | + cmd[9]); | |
1001 | ||
6f3cbf55 DG |
1002 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
1003 | if (! arr) | |
1004 | return DID_REQUEUE << 16; | |
5a09e398 HR |
1005 | /* |
1006 | * EVPD page 0x88 states we have two ports, one | |
1007 | * real and a fake port with no device connected. | |
1008 | * So we create two port groups with one port each | |
1009 | * and set the group with port B to unavailable. | |
1010 | */ | |
1011 | port_a = 0x1; /* relative port A */ | |
1012 | port_b = 0x2; /* relative port B */ | |
1013 | port_group_a = (((host_no + 1) & 0x7f) << 8) + | |
1014 | (devip->channel & 0x7f); | |
1015 | port_group_b = (((host_no + 1) & 0x7f) << 8) + | |
1016 | (devip->channel & 0x7f) + 0x80; | |
1017 | ||
1018 | /* | |
1019 | * The asymmetric access state is cycled according to the host_id. | |
1020 | */ | |
1021 | n = 4; | |
1022 | if (0 == scsi_debug_vpd_use_hostno) { | |
1023 | arr[n++] = host_no % 3; /* Asymm access state */ | |
1024 | arr[n++] = 0x0F; /* claim: all states are supported */ | |
1025 | } else { | |
1026 | arr[n++] = 0x0; /* Active/Optimized path */ | |
1027 | arr[n++] = 0x01; /* claim: only support active/optimized paths */ | |
1028 | } | |
1029 | arr[n++] = (port_group_a >> 8) & 0xff; | |
1030 | arr[n++] = port_group_a & 0xff; | |
1031 | arr[n++] = 0; /* Reserved */ | |
1032 | arr[n++] = 0; /* Status code */ | |
1033 | arr[n++] = 0; /* Vendor unique */ | |
1034 | arr[n++] = 0x1; /* One port per group */ | |
1035 | arr[n++] = 0; /* Reserved */ | |
1036 | arr[n++] = 0; /* Reserved */ | |
1037 | arr[n++] = (port_a >> 8) & 0xff; | |
1038 | arr[n++] = port_a & 0xff; | |
1039 | arr[n++] = 3; /* Port unavailable */ | |
1040 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ | |
1041 | arr[n++] = (port_group_b >> 8) & 0xff; | |
1042 | arr[n++] = port_group_b & 0xff; | |
1043 | arr[n++] = 0; /* Reserved */ | |
1044 | arr[n++] = 0; /* Status code */ | |
1045 | arr[n++] = 0; /* Vendor unique */ | |
1046 | arr[n++] = 0x1; /* One port per group */ | |
1047 | arr[n++] = 0; /* Reserved */ | |
1048 | arr[n++] = 0; /* Reserved */ | |
1049 | arr[n++] = (port_b >> 8) & 0xff; | |
1050 | arr[n++] = port_b & 0xff; | |
1051 | ||
1052 | rlen = n - 4; | |
1053 | arr[0] = (rlen >> 24) & 0xff; | |
1054 | arr[1] = (rlen >> 16) & 0xff; | |
1055 | arr[2] = (rlen >> 8) & 0xff; | |
1056 | arr[3] = rlen & 0xff; | |
1057 | ||
1058 | /* | |
1059 | * Return the smallest value of either | |
1060 | * - The allocated length | |
1061 | * - The constructed command length | |
1062 | * - The maximum array size | |
1063 | */ | |
1064 | rlen = min(alen,n); | |
1065 | ret = fill_from_dev_buffer(scp, arr, | |
1066 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); | |
1067 | kfree(arr); | |
1068 | return ret; | |
1069 | } | |
1070 | ||
1da177e4 LT |
1071 | /* <<Following mode page info copied from ST318451LW>> */ |
1072 | ||
1073 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) | |
1074 | { /* Read-Write Error Recovery page for mode_sense */ | |
1075 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, | |
1076 | 5, 0, 0xff, 0xff}; | |
1077 | ||
1078 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); | |
1079 | if (1 == pcontrol) | |
1080 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); | |
1081 | return sizeof(err_recov_pg); | |
1082 | } | |
1083 | ||
1084 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) | |
1085 | { /* Disconnect-Reconnect page for mode_sense */ | |
1086 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, | |
1087 | 0, 0, 0, 0, 0, 0, 0, 0}; | |
1088 | ||
1089 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); | |
1090 | if (1 == pcontrol) | |
1091 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); | |
1092 | return sizeof(disconnect_pg); | |
1093 | } | |
1094 | ||
1095 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) | |
1096 | { /* Format device page for mode_sense */ | |
597136ab MP |
1097 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
1098 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1099 | 0, 0, 0, 0, 0x40, 0, 0, 0}; | |
1100 | ||
1101 | memcpy(p, format_pg, sizeof(format_pg)); | |
1102 | p[10] = (sdebug_sectors_per >> 8) & 0xff; | |
1103 | p[11] = sdebug_sectors_per & 0xff; | |
1104 | p[12] = (scsi_debug_sector_size >> 8) & 0xff; | |
1105 | p[13] = scsi_debug_sector_size & 0xff; | |
1106 | if (DEV_REMOVEABLE(target)) | |
1107 | p[20] |= 0x20; /* should agree with INQUIRY */ | |
1108 | if (1 == pcontrol) | |
1109 | memset(p + 2, 0, sizeof(format_pg) - 2); | |
1110 | return sizeof(format_pg); | |
1da177e4 LT |
1111 | } |
1112 | ||
1113 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) | |
1114 | { /* Caching page for mode_sense */ | |
1115 | unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
1116 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; | |
1117 | ||
1118 | memcpy(p, caching_pg, sizeof(caching_pg)); | |
1119 | if (1 == pcontrol) | |
1120 | memset(p + 2, 0, sizeof(caching_pg) - 2); | |
1121 | return sizeof(caching_pg); | |
1122 | } | |
1123 | ||
1124 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) | |
1125 | { /* Control mode page for mode_sense */ | |
c65b1445 DG |
1126 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
1127 | 0, 0, 0, 0}; | |
1128 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, | |
1da177e4 LT |
1129 | 0, 0, 0x2, 0x4b}; |
1130 | ||
1131 | if (scsi_debug_dsense) | |
1132 | ctrl_m_pg[2] |= 0x4; | |
c65b1445 DG |
1133 | else |
1134 | ctrl_m_pg[2] &= ~0x4; | |
c6a44287 MP |
1135 | |
1136 | if (scsi_debug_ato) | |
1137 | ctrl_m_pg[5] |= 0x80; /* ATO=1 */ | |
1138 | ||
1da177e4 LT |
1139 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
1140 | if (1 == pcontrol) | |
c65b1445 DG |
1141 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
1142 | else if (2 == pcontrol) | |
1143 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); | |
1da177e4 LT |
1144 | return sizeof(ctrl_m_pg); |
1145 | } | |
1146 | ||
c65b1445 | 1147 | |
1da177e4 LT |
1148 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
1149 | { /* Informational Exceptions control mode page for mode_sense */ | |
c65b1445 DG |
1150 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
1151 | 0, 0, 0x0, 0x0}; | |
1152 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
1153 | 0, 0, 0x0, 0x0}; | |
1154 | ||
1da177e4 LT |
1155 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
1156 | if (1 == pcontrol) | |
c65b1445 DG |
1157 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
1158 | else if (2 == pcontrol) | |
1159 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); | |
1da177e4 LT |
1160 | return sizeof(iec_m_pg); |
1161 | } | |
1162 | ||
c65b1445 DG |
1163 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
1164 | { /* SAS SSP mode page - short format for mode_sense */ | |
1165 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, | |
1166 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; | |
1167 | ||
1168 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); | |
1169 | if (1 == pcontrol) | |
1170 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); | |
1171 | return sizeof(sas_sf_m_pg); | |
1172 | } | |
1173 | ||
1174 | ||
1175 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, | |
1176 | int target_dev_id) | |
1177 | { /* SAS phy control and discover mode page for mode_sense */ | |
1178 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, | |
1179 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1180 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1181 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1182 | 0x2, 0, 0, 0, 0, 0, 0, 0, | |
1183 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1184 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1185 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1186 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1187 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1188 | 0x3, 0, 0, 0, 0, 0, 0, 0, | |
1189 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1190 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1191 | }; | |
1192 | int port_a, port_b; | |
1193 | ||
1194 | port_a = target_dev_id + 1; | |
1195 | port_b = port_a + 1; | |
1196 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); | |
1197 | p[20] = (port_a >> 24); | |
1198 | p[21] = (port_a >> 16) & 0xff; | |
1199 | p[22] = (port_a >> 8) & 0xff; | |
1200 | p[23] = port_a & 0xff; | |
1201 | p[48 + 20] = (port_b >> 24); | |
1202 | p[48 + 21] = (port_b >> 16) & 0xff; | |
1203 | p[48 + 22] = (port_b >> 8) & 0xff; | |
1204 | p[48 + 23] = port_b & 0xff; | |
1205 | if (1 == pcontrol) | |
1206 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); | |
1207 | return sizeof(sas_pcd_m_pg); | |
1208 | } | |
1209 | ||
1210 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) | |
1211 | { /* SAS SSP shared protocol specific port mode subpage */ | |
1212 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, | |
1213 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1214 | }; | |
1215 | ||
1216 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); | |
1217 | if (1 == pcontrol) | |
1218 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); | |
1219 | return sizeof(sas_sha_m_pg); | |
1220 | } | |
1221 | ||
1da177e4 LT |
1222 | #define SDEBUG_MAX_MSENSE_SZ 256 |
1223 | ||
1224 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, | |
1225 | struct sdebug_dev_info * devip) | |
1226 | { | |
23183910 DG |
1227 | unsigned char dbd, llbaa; |
1228 | int pcontrol, pcode, subpcode, bd_len; | |
1da177e4 | 1229 | unsigned char dev_spec; |
23183910 | 1230 | int k, alloc_len, msense_6, offset, len, errsts, target_dev_id; |
1da177e4 LT |
1231 | unsigned char * ap; |
1232 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; | |
1233 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1234 | ||
c65b1445 | 1235 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 | 1236 | return errsts; |
23183910 | 1237 | dbd = !!(cmd[1] & 0x8); |
1da177e4 LT |
1238 | pcontrol = (cmd[2] & 0xc0) >> 6; |
1239 | pcode = cmd[2] & 0x3f; | |
1240 | subpcode = cmd[3]; | |
1241 | msense_6 = (MODE_SENSE == cmd[0]); | |
23183910 DG |
1242 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
1243 | if ((0 == scsi_debug_ptype) && (0 == dbd)) | |
1244 | bd_len = llbaa ? 16 : 8; | |
1245 | else | |
1246 | bd_len = 0; | |
1da177e4 LT |
1247 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
1248 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); | |
1249 | if (0x3 == pcontrol) { /* Saving values not supported */ | |
1250 | mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, | |
1251 | 0); | |
1252 | return check_condition_result; | |
1253 | } | |
c65b1445 DG |
1254 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
1255 | (devip->target * 1000) - 3; | |
23183910 DG |
1256 | /* set DPOFUA bit for disks */ |
1257 | if (0 == scsi_debug_ptype) | |
1258 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; | |
1259 | else | |
1260 | dev_spec = 0x0; | |
1da177e4 LT |
1261 | if (msense_6) { |
1262 | arr[2] = dev_spec; | |
23183910 | 1263 | arr[3] = bd_len; |
1da177e4 LT |
1264 | offset = 4; |
1265 | } else { | |
1266 | arr[3] = dev_spec; | |
23183910 DG |
1267 | if (16 == bd_len) |
1268 | arr[4] = 0x1; /* set LONGLBA bit */ | |
1269 | arr[7] = bd_len; /* assume 255 or less */ | |
1da177e4 LT |
1270 | offset = 8; |
1271 | } | |
1272 | ap = arr + offset; | |
28898873 FT |
1273 | if ((bd_len > 0) && (!sdebug_capacity)) |
1274 | sdebug_capacity = get_sdebug_capacity(); | |
1275 | ||
23183910 DG |
1276 | if (8 == bd_len) { |
1277 | if (sdebug_capacity > 0xfffffffe) { | |
1278 | ap[0] = 0xff; | |
1279 | ap[1] = 0xff; | |
1280 | ap[2] = 0xff; | |
1281 | ap[3] = 0xff; | |
1282 | } else { | |
1283 | ap[0] = (sdebug_capacity >> 24) & 0xff; | |
1284 | ap[1] = (sdebug_capacity >> 16) & 0xff; | |
1285 | ap[2] = (sdebug_capacity >> 8) & 0xff; | |
1286 | ap[3] = sdebug_capacity & 0xff; | |
1287 | } | |
597136ab MP |
1288 | ap[6] = (scsi_debug_sector_size >> 8) & 0xff; |
1289 | ap[7] = scsi_debug_sector_size & 0xff; | |
23183910 DG |
1290 | offset += bd_len; |
1291 | ap = arr + offset; | |
1292 | } else if (16 == bd_len) { | |
1293 | unsigned long long capac = sdebug_capacity; | |
1294 | ||
1295 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1296 | ap[7 - k] = capac & 0xff; | |
597136ab MP |
1297 | ap[12] = (scsi_debug_sector_size >> 24) & 0xff; |
1298 | ap[13] = (scsi_debug_sector_size >> 16) & 0xff; | |
1299 | ap[14] = (scsi_debug_sector_size >> 8) & 0xff; | |
1300 | ap[15] = scsi_debug_sector_size & 0xff; | |
23183910 DG |
1301 | offset += bd_len; |
1302 | ap = arr + offset; | |
1303 | } | |
1da177e4 | 1304 | |
c65b1445 DG |
1305 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
1306 | /* TODO: Control Extension page */ | |
1da177e4 LT |
1307 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1308 | 0); | |
1309 | return check_condition_result; | |
1310 | } | |
1311 | switch (pcode) { | |
1312 | case 0x1: /* Read-Write error recovery page, direct access */ | |
1313 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1314 | offset += len; | |
1315 | break; | |
1316 | case 0x2: /* Disconnect-Reconnect page, all devices */ | |
1317 | len = resp_disconnect_pg(ap, pcontrol, target); | |
1318 | offset += len; | |
1319 | break; | |
1320 | case 0x3: /* Format device page, direct access */ | |
1321 | len = resp_format_pg(ap, pcontrol, target); | |
1322 | offset += len; | |
1323 | break; | |
1324 | case 0x8: /* Caching page, direct access */ | |
1325 | len = resp_caching_pg(ap, pcontrol, target); | |
1326 | offset += len; | |
1327 | break; | |
1328 | case 0xa: /* Control Mode page, all devices */ | |
1329 | len = resp_ctrl_m_pg(ap, pcontrol, target); | |
1330 | offset += len; | |
1331 | break; | |
c65b1445 DG |
1332 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
1333 | if ((subpcode > 0x2) && (subpcode < 0xff)) { | |
1334 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1335 | INVALID_FIELD_IN_CDB, 0); | |
1336 | return check_condition_result; | |
1337 | } | |
1338 | len = 0; | |
1339 | if ((0x0 == subpcode) || (0xff == subpcode)) | |
1340 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1341 | if ((0x1 == subpcode) || (0xff == subpcode)) | |
1342 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, | |
1343 | target_dev_id); | |
1344 | if ((0x2 == subpcode) || (0xff == subpcode)) | |
1345 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1346 | offset += len; | |
1347 | break; | |
1da177e4 LT |
1348 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
1349 | len = resp_iec_m_pg(ap, pcontrol, target); | |
1350 | offset += len; | |
1351 | break; | |
1352 | case 0x3f: /* Read all Mode pages */ | |
c65b1445 DG |
1353 | if ((0 == subpcode) || (0xff == subpcode)) { |
1354 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1355 | len += resp_disconnect_pg(ap + len, pcontrol, target); | |
1356 | len += resp_format_pg(ap + len, pcontrol, target); | |
1357 | len += resp_caching_pg(ap + len, pcontrol, target); | |
1358 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); | |
1359 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1360 | if (0xff == subpcode) { | |
1361 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, | |
1362 | target, target_dev_id); | |
1363 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1364 | } | |
1365 | len += resp_iec_m_pg(ap + len, pcontrol, target); | |
1366 | } else { | |
1367 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1368 | INVALID_FIELD_IN_CDB, 0); | |
1369 | return check_condition_result; | |
1370 | } | |
1da177e4 LT |
1371 | offset += len; |
1372 | break; | |
1373 | default: | |
1374 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1375 | 0); | |
1376 | return check_condition_result; | |
1377 | } | |
1378 | if (msense_6) | |
1379 | arr[0] = offset - 1; | |
1380 | else { | |
1381 | arr[0] = ((offset - 2) >> 8) & 0xff; | |
1382 | arr[1] = (offset - 2) & 0xff; | |
1383 | } | |
1384 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); | |
1385 | } | |
1386 | ||
c65b1445 DG |
1387 | #define SDEBUG_MAX_MSELECT_SZ 512 |
1388 | ||
1389 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, | |
1390 | struct sdebug_dev_info * devip) | |
1391 | { | |
1392 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; | |
1393 | int param_len, res, errsts, mpage; | |
1394 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; | |
1395 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1396 | ||
1397 | if ((errsts = check_readiness(scp, 1, devip))) | |
1398 | return errsts; | |
1399 | memset(arr, 0, sizeof(arr)); | |
1400 | pf = cmd[1] & 0x10; | |
1401 | sp = cmd[1] & 0x1; | |
1402 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); | |
1403 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { | |
1404 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1405 | INVALID_FIELD_IN_CDB, 0); | |
1406 | return check_condition_result; | |
1407 | } | |
1408 | res = fetch_to_dev_buffer(scp, arr, param_len); | |
1409 | if (-1 == res) | |
1410 | return (DID_ERROR << 16); | |
1411 | else if ((res < param_len) && | |
1412 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
1413 | printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " | |
1414 | " IO sent=%d bytes\n", param_len, res); | |
1415 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); | |
1416 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); | |
23183910 | 1417 | if (md_len > 2) { |
c65b1445 DG |
1418 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
1419 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1420 | return check_condition_result; | |
1421 | } | |
1422 | off = bd_len + (mselect6 ? 4 : 8); | |
1423 | mpage = arr[off] & 0x3f; | |
1424 | ps = !!(arr[off] & 0x80); | |
1425 | if (ps) { | |
1426 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1427 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1428 | return check_condition_result; | |
1429 | } | |
1430 | spf = !!(arr[off] & 0x40); | |
1431 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : | |
1432 | (arr[off + 1] + 2); | |
1433 | if ((pg_len + off) > param_len) { | |
1434 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1435 | PARAMETER_LIST_LENGTH_ERR, 0); | |
1436 | return check_condition_result; | |
1437 | } | |
1438 | switch (mpage) { | |
1439 | case 0xa: /* Control Mode page */ | |
1440 | if (ctrl_m_pg[1] == arr[off + 1]) { | |
1441 | memcpy(ctrl_m_pg + 2, arr + off + 2, | |
1442 | sizeof(ctrl_m_pg) - 2); | |
1443 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); | |
1444 | return 0; | |
1445 | } | |
1446 | break; | |
1447 | case 0x1c: /* Informational Exceptions Mode page */ | |
1448 | if (iec_m_pg[1] == arr[off + 1]) { | |
1449 | memcpy(iec_m_pg + 2, arr + off + 2, | |
1450 | sizeof(iec_m_pg) - 2); | |
1451 | return 0; | |
1452 | } | |
1453 | break; | |
1454 | default: | |
1455 | break; | |
1456 | } | |
1457 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1458 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1459 | return check_condition_result; | |
1460 | } | |
1461 | ||
1462 | static int resp_temp_l_pg(unsigned char * arr) | |
1463 | { | |
1464 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, | |
1465 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, | |
1466 | }; | |
1467 | ||
1468 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); | |
1469 | return sizeof(temp_l_pg); | |
1470 | } | |
1471 | ||
1472 | static int resp_ie_l_pg(unsigned char * arr) | |
1473 | { | |
1474 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, | |
1475 | }; | |
1476 | ||
1477 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); | |
1478 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ | |
1479 | arr[4] = THRESHOLD_EXCEEDED; | |
1480 | arr[5] = 0xff; | |
1481 | } | |
1482 | return sizeof(ie_l_pg); | |
1483 | } | |
1484 | ||
1485 | #define SDEBUG_MAX_LSENSE_SZ 512 | |
1486 | ||
1487 | static int resp_log_sense(struct scsi_cmnd * scp, | |
1488 | struct sdebug_dev_info * devip) | |
1489 | { | |
23183910 | 1490 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n; |
c65b1445 DG |
1491 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
1492 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1493 | ||
1494 | if ((errsts = check_readiness(scp, 1, devip))) | |
1495 | return errsts; | |
1496 | memset(arr, 0, sizeof(arr)); | |
1497 | ppc = cmd[1] & 0x2; | |
1498 | sp = cmd[1] & 0x1; | |
1499 | if (ppc || sp) { | |
1500 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1501 | INVALID_FIELD_IN_CDB, 0); | |
1502 | return check_condition_result; | |
1503 | } | |
1504 | pcontrol = (cmd[2] & 0xc0) >> 6; | |
1505 | pcode = cmd[2] & 0x3f; | |
23183910 | 1506 | subpcode = cmd[3] & 0xff; |
c65b1445 DG |
1507 | alloc_len = (cmd[7] << 8) + cmd[8]; |
1508 | arr[0] = pcode; | |
23183910 DG |
1509 | if (0 == subpcode) { |
1510 | switch (pcode) { | |
1511 | case 0x0: /* Supported log pages log page */ | |
1512 | n = 4; | |
1513 | arr[n++] = 0x0; /* this page */ | |
1514 | arr[n++] = 0xd; /* Temperature */ | |
1515 | arr[n++] = 0x2f; /* Informational exceptions */ | |
1516 | arr[3] = n - 4; | |
1517 | break; | |
1518 | case 0xd: /* Temperature log page */ | |
1519 | arr[3] = resp_temp_l_pg(arr + 4); | |
1520 | break; | |
1521 | case 0x2f: /* Informational exceptions log page */ | |
1522 | arr[3] = resp_ie_l_pg(arr + 4); | |
1523 | break; | |
1524 | default: | |
1525 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1526 | INVALID_FIELD_IN_CDB, 0); | |
1527 | return check_condition_result; | |
1528 | } | |
1529 | } else if (0xff == subpcode) { | |
1530 | arr[0] |= 0x40; | |
1531 | arr[1] = subpcode; | |
1532 | switch (pcode) { | |
1533 | case 0x0: /* Supported log pages and subpages log page */ | |
1534 | n = 4; | |
1535 | arr[n++] = 0x0; | |
1536 | arr[n++] = 0x0; /* 0,0 page */ | |
1537 | arr[n++] = 0x0; | |
1538 | arr[n++] = 0xff; /* this page */ | |
1539 | arr[n++] = 0xd; | |
1540 | arr[n++] = 0x0; /* Temperature */ | |
1541 | arr[n++] = 0x2f; | |
1542 | arr[n++] = 0x0; /* Informational exceptions */ | |
1543 | arr[3] = n - 4; | |
1544 | break; | |
1545 | case 0xd: /* Temperature subpages */ | |
1546 | n = 4; | |
1547 | arr[n++] = 0xd; | |
1548 | arr[n++] = 0x0; /* Temperature */ | |
1549 | arr[3] = n - 4; | |
1550 | break; | |
1551 | case 0x2f: /* Informational exceptions subpages */ | |
1552 | n = 4; | |
1553 | arr[n++] = 0x2f; | |
1554 | arr[n++] = 0x0; /* Informational exceptions */ | |
1555 | arr[3] = n - 4; | |
1556 | break; | |
1557 | default: | |
1558 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1559 | INVALID_FIELD_IN_CDB, 0); | |
1560 | return check_condition_result; | |
1561 | } | |
1562 | } else { | |
c65b1445 DG |
1563 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
1564 | INVALID_FIELD_IN_CDB, 0); | |
1565 | return check_condition_result; | |
1566 | } | |
1567 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); | |
1568 | return fill_from_dev_buffer(scp, arr, | |
1569 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); | |
1570 | } | |
1571 | ||
19789100 FT |
1572 | static int check_device_access_params(struct sdebug_dev_info *devi, |
1573 | unsigned long long lba, unsigned int num) | |
1da177e4 | 1574 | { |
c65b1445 | 1575 | if (lba + num > sdebug_capacity) { |
19789100 | 1576 | mk_sense_buffer(devi, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, 0); |
1da177e4 LT |
1577 | return check_condition_result; |
1578 | } | |
c65b1445 DG |
1579 | /* transfer length excessive (tie in to block limits VPD page) */ |
1580 | if (num > sdebug_store_sectors) { | |
19789100 | 1581 | mk_sense_buffer(devi, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
c65b1445 DG |
1582 | return check_condition_result; |
1583 | } | |
19789100 FT |
1584 | return 0; |
1585 | } | |
1586 | ||
1587 | static int do_device_access(struct scsi_cmnd *scmd, | |
1588 | struct sdebug_dev_info *devi, | |
1589 | unsigned long long lba, unsigned int num, int write) | |
1590 | { | |
1591 | int ret; | |
1592 | unsigned int block, rest = 0; | |
1593 | int (*func)(struct scsi_cmnd *, unsigned char *, int); | |
1594 | ||
1595 | func = write ? fetch_to_dev_buffer : fill_from_dev_buffer; | |
1596 | ||
1597 | block = do_div(lba, sdebug_store_sectors); | |
1598 | if (block + num > sdebug_store_sectors) | |
1599 | rest = block + num - sdebug_store_sectors; | |
1600 | ||
597136ab MP |
1601 | ret = func(scmd, fake_storep + (block * scsi_debug_sector_size), |
1602 | (num - rest) * scsi_debug_sector_size); | |
19789100 | 1603 | if (!ret && rest) |
597136ab | 1604 | ret = func(scmd, fake_storep, rest * scsi_debug_sector_size); |
19789100 FT |
1605 | |
1606 | return ret; | |
1607 | } | |
1608 | ||
c6a44287 | 1609 | static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, |
395cef03 | 1610 | unsigned int sectors, u32 ei_lba) |
c6a44287 MP |
1611 | { |
1612 | unsigned int i, resid; | |
1613 | struct scatterlist *psgl; | |
1614 | struct sd_dif_tuple *sdt; | |
1615 | sector_t sector; | |
1616 | sector_t tmp_sec = start_sec; | |
1617 | void *paddr; | |
1618 | ||
1619 | start_sec = do_div(tmp_sec, sdebug_store_sectors); | |
1620 | ||
1621 | sdt = (struct sd_dif_tuple *)(dif_storep + dif_offset(start_sec)); | |
1622 | ||
1623 | for (i = 0 ; i < sectors ; i++) { | |
1624 | u16 csum; | |
1625 | ||
1626 | if (sdt[i].app_tag == 0xffff) | |
1627 | continue; | |
1628 | ||
1629 | sector = start_sec + i; | |
1630 | ||
1631 | switch (scsi_debug_guard) { | |
1632 | case 1: | |
1633 | csum = ip_compute_csum(fake_storep + | |
1634 | sector * scsi_debug_sector_size, | |
1635 | scsi_debug_sector_size); | |
1636 | break; | |
1637 | case 0: | |
1638 | csum = crc_t10dif(fake_storep + | |
1639 | sector * scsi_debug_sector_size, | |
1640 | scsi_debug_sector_size); | |
1641 | csum = cpu_to_be16(csum); | |
1642 | break; | |
1643 | default: | |
1644 | BUG(); | |
1645 | } | |
1646 | ||
1647 | if (sdt[i].guard_tag != csum) { | |
1648 | printk(KERN_ERR "%s: GUARD check failed on sector %lu" \ | |
1649 | " rcvd 0x%04x, data 0x%04x\n", __func__, | |
1650 | (unsigned long)sector, | |
1651 | be16_to_cpu(sdt[i].guard_tag), | |
1652 | be16_to_cpu(csum)); | |
1653 | dif_errors++; | |
1654 | return 0x01; | |
1655 | } | |
1656 | ||
395cef03 | 1657 | if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION && |
c6a44287 MP |
1658 | be32_to_cpu(sdt[i].ref_tag) != (sector & 0xffffffff)) { |
1659 | printk(KERN_ERR "%s: REF check failed on sector %lu\n", | |
1660 | __func__, (unsigned long)sector); | |
1661 | dif_errors++; | |
1662 | return 0x03; | |
1663 | } | |
395cef03 MP |
1664 | |
1665 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
1666 | be32_to_cpu(sdt[i].ref_tag) != ei_lba) { | |
1667 | printk(KERN_ERR "%s: REF check failed on sector %lu\n", | |
1668 | __func__, (unsigned long)sector); | |
1669 | dif_errors++; | |
1670 | return 0x03; | |
1671 | } | |
1672 | ||
1673 | ei_lba++; | |
c6a44287 MP |
1674 | } |
1675 | ||
1676 | resid = sectors * 8; /* Bytes of protection data to copy into sgl */ | |
1677 | sector = start_sec; | |
1678 | ||
1679 | scsi_for_each_prot_sg(SCpnt, psgl, scsi_prot_sg_count(SCpnt), i) { | |
1680 | int len = min(psgl->length, resid); | |
1681 | ||
1682 | paddr = kmap_atomic(sg_page(psgl), KM_IRQ0) + psgl->offset; | |
1683 | memcpy(paddr, dif_storep + dif_offset(sector), len); | |
1684 | ||
1685 | sector += len >> 3; | |
1686 | if (sector >= sdebug_store_sectors) { | |
1687 | /* Force wrap */ | |
1688 | tmp_sec = sector; | |
1689 | sector = do_div(tmp_sec, sdebug_store_sectors); | |
1690 | } | |
1691 | resid -= len; | |
1692 | kunmap_atomic(paddr, KM_IRQ0); | |
1693 | } | |
1694 | ||
1695 | dix_reads++; | |
1696 | ||
1697 | return 0; | |
1698 | } | |
1699 | ||
19789100 | 1700 | static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba, |
395cef03 MP |
1701 | unsigned int num, struct sdebug_dev_info *devip, |
1702 | u32 ei_lba) | |
19789100 FT |
1703 | { |
1704 | unsigned long iflags; | |
1705 | int ret; | |
1706 | ||
1707 | ret = check_device_access_params(devip, lba, num); | |
1708 | if (ret) | |
1709 | return ret; | |
1710 | ||
1da177e4 | 1711 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
c65b1445 DG |
1712 | (lba <= OPT_MEDIUM_ERR_ADDR) && |
1713 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { | |
1714 | /* claim unrecoverable read error */ | |
1da177e4 LT |
1715 | mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, |
1716 | 0); | |
c65b1445 DG |
1717 | /* set info field and valid bit for fixed descriptor */ |
1718 | if (0x70 == (devip->sense_buff[0] & 0x7f)) { | |
1719 | devip->sense_buff[0] |= 0x80; /* Valid bit */ | |
1720 | ret = OPT_MEDIUM_ERR_ADDR; | |
1721 | devip->sense_buff[3] = (ret >> 24) & 0xff; | |
1722 | devip->sense_buff[4] = (ret >> 16) & 0xff; | |
1723 | devip->sense_buff[5] = (ret >> 8) & 0xff; | |
1724 | devip->sense_buff[6] = ret & 0xff; | |
1725 | } | |
1da177e4 LT |
1726 | return check_condition_result; |
1727 | } | |
c6a44287 MP |
1728 | |
1729 | /* DIX + T10 DIF */ | |
1730 | if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { | |
395cef03 | 1731 | int prot_ret = prot_verify_read(SCpnt, lba, num, ei_lba); |
c6a44287 MP |
1732 | |
1733 | if (prot_ret) { | |
1734 | mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, prot_ret); | |
1735 | return illegal_condition_result; | |
1736 | } | |
1737 | } | |
1738 | ||
1da177e4 | 1739 | read_lock_irqsave(&atomic_rw, iflags); |
19789100 | 1740 | ret = do_device_access(SCpnt, devip, lba, num, 0); |
1da177e4 LT |
1741 | read_unlock_irqrestore(&atomic_rw, iflags); |
1742 | return ret; | |
1743 | } | |
1744 | ||
c6a44287 MP |
1745 | void dump_sector(unsigned char *buf, int len) |
1746 | { | |
1747 | int i, j; | |
1748 | ||
1749 | printk(KERN_ERR ">>> Sector Dump <<<\n"); | |
1750 | ||
1751 | for (i = 0 ; i < len ; i += 16) { | |
1752 | printk(KERN_ERR "%04d: ", i); | |
1753 | ||
1754 | for (j = 0 ; j < 16 ; j++) { | |
1755 | unsigned char c = buf[i+j]; | |
1756 | if (c >= 0x20 && c < 0x7e) | |
1757 | printk(" %c ", buf[i+j]); | |
1758 | else | |
1759 | printk("%02x ", buf[i+j]); | |
1760 | } | |
1761 | ||
1762 | printk("\n"); | |
1763 | } | |
1764 | } | |
1765 | ||
1766 | static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, | |
395cef03 | 1767 | unsigned int sectors, u32 ei_lba) |
c6a44287 MP |
1768 | { |
1769 | int i, j, ret; | |
1770 | struct sd_dif_tuple *sdt; | |
1771 | struct scatterlist *dsgl = scsi_sglist(SCpnt); | |
1772 | struct scatterlist *psgl = scsi_prot_sglist(SCpnt); | |
1773 | void *daddr, *paddr; | |
1774 | sector_t tmp_sec = start_sec; | |
1775 | sector_t sector; | |
1776 | int ppage_offset; | |
1777 | unsigned short csum; | |
1778 | ||
1779 | sector = do_div(tmp_sec, sdebug_store_sectors); | |
1780 | ||
c6a44287 MP |
1781 | BUG_ON(scsi_sg_count(SCpnt) == 0); |
1782 | BUG_ON(scsi_prot_sg_count(SCpnt) == 0); | |
1783 | ||
1784 | paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) + psgl->offset; | |
1785 | ppage_offset = 0; | |
1786 | ||
1787 | /* For each data page */ | |
1788 | scsi_for_each_sg(SCpnt, dsgl, scsi_sg_count(SCpnt), i) { | |
1789 | daddr = kmap_atomic(sg_page(dsgl), KM_IRQ0) + dsgl->offset; | |
1790 | ||
1791 | /* For each sector-sized chunk in data page */ | |
1792 | for (j = 0 ; j < dsgl->length ; j += scsi_debug_sector_size) { | |
1793 | ||
1794 | /* If we're at the end of the current | |
1795 | * protection page advance to the next one | |
1796 | */ | |
1797 | if (ppage_offset >= psgl->length) { | |
1798 | kunmap_atomic(paddr, KM_IRQ1); | |
1799 | psgl = sg_next(psgl); | |
1800 | BUG_ON(psgl == NULL); | |
1801 | paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) | |
1802 | + psgl->offset; | |
1803 | ppage_offset = 0; | |
1804 | } | |
1805 | ||
1806 | sdt = paddr + ppage_offset; | |
1807 | ||
1808 | switch (scsi_debug_guard) { | |
1809 | case 1: | |
1810 | csum = ip_compute_csum(daddr, | |
1811 | scsi_debug_sector_size); | |
1812 | break; | |
1813 | case 0: | |
1814 | csum = cpu_to_be16(crc_t10dif(daddr, | |
1815 | scsi_debug_sector_size)); | |
1816 | break; | |
1817 | default: | |
1818 | BUG(); | |
1819 | ret = 0; | |
1820 | goto out; | |
1821 | } | |
1822 | ||
1823 | if (sdt->guard_tag != csum) { | |
1824 | printk(KERN_ERR | |
1825 | "%s: GUARD check failed on sector %lu " \ | |
1826 | "rcvd 0x%04x, calculated 0x%04x\n", | |
1827 | __func__, (unsigned long)sector, | |
1828 | be16_to_cpu(sdt->guard_tag), | |
1829 | be16_to_cpu(csum)); | |
1830 | ret = 0x01; | |
1831 | dump_sector(daddr, scsi_debug_sector_size); | |
1832 | goto out; | |
1833 | } | |
1834 | ||
395cef03 | 1835 | if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION && |
c6a44287 MP |
1836 | be32_to_cpu(sdt->ref_tag) |
1837 | != (start_sec & 0xffffffff)) { | |
1838 | printk(KERN_ERR | |
1839 | "%s: REF check failed on sector %lu\n", | |
1840 | __func__, (unsigned long)sector); | |
1841 | ret = 0x03; | |
1842 | dump_sector(daddr, scsi_debug_sector_size); | |
1843 | goto out; | |
1844 | } | |
1845 | ||
395cef03 MP |
1846 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && |
1847 | be32_to_cpu(sdt->ref_tag) != ei_lba) { | |
1848 | printk(KERN_ERR | |
1849 | "%s: REF check failed on sector %lu\n", | |
1850 | __func__, (unsigned long)sector); | |
1851 | ret = 0x03; | |
1852 | dump_sector(daddr, scsi_debug_sector_size); | |
1853 | goto out; | |
1854 | } | |
1855 | ||
c6a44287 MP |
1856 | /* Would be great to copy this in bigger |
1857 | * chunks. However, for the sake of | |
1858 | * correctness we need to verify each sector | |
1859 | * before writing it to "stable" storage | |
1860 | */ | |
1861 | memcpy(dif_storep + dif_offset(sector), sdt, 8); | |
1862 | ||
1863 | sector++; | |
1864 | ||
1865 | if (sector == sdebug_store_sectors) | |
1866 | sector = 0; /* Force wrap */ | |
1867 | ||
1868 | start_sec++; | |
395cef03 | 1869 | ei_lba++; |
c6a44287 MP |
1870 | daddr += scsi_debug_sector_size; |
1871 | ppage_offset += sizeof(struct sd_dif_tuple); | |
1872 | } | |
1873 | ||
1874 | kunmap_atomic(daddr, KM_IRQ0); | |
1875 | } | |
1876 | ||
1877 | kunmap_atomic(paddr, KM_IRQ1); | |
1878 | ||
1879 | dix_writes++; | |
1880 | ||
1881 | return 0; | |
1882 | ||
1883 | out: | |
1884 | dif_errors++; | |
1885 | kunmap_atomic(daddr, KM_IRQ0); | |
1886 | kunmap_atomic(paddr, KM_IRQ1); | |
1887 | return ret; | |
1888 | } | |
1889 | ||
19789100 | 1890 | static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba, |
395cef03 MP |
1891 | unsigned int num, struct sdebug_dev_info *devip, |
1892 | u32 ei_lba) | |
1da177e4 LT |
1893 | { |
1894 | unsigned long iflags; | |
19789100 | 1895 | int ret; |
1da177e4 | 1896 | |
19789100 FT |
1897 | ret = check_device_access_params(devip, lba, num); |
1898 | if (ret) | |
1899 | return ret; | |
1da177e4 | 1900 | |
c6a44287 MP |
1901 | /* DIX + T10 DIF */ |
1902 | if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { | |
395cef03 | 1903 | int prot_ret = prot_verify_write(SCpnt, lba, num, ei_lba); |
c6a44287 MP |
1904 | |
1905 | if (prot_ret) { | |
1906 | mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, prot_ret); | |
1907 | return illegal_condition_result; | |
1908 | } | |
1909 | } | |
1910 | ||
1da177e4 | 1911 | write_lock_irqsave(&atomic_rw, iflags); |
19789100 | 1912 | ret = do_device_access(SCpnt, devip, lba, num, 1); |
1da177e4 | 1913 | write_unlock_irqrestore(&atomic_rw, iflags); |
19789100 | 1914 | if (-1 == ret) |
1da177e4 | 1915 | return (DID_ERROR << 16); |
597136ab | 1916 | else if ((ret < (num * scsi_debug_sector_size)) && |
1da177e4 | 1917 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
c65b1445 | 1918 | printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " |
597136ab | 1919 | " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret); |
1da177e4 LT |
1920 | return 0; |
1921 | } | |
1922 | ||
c65b1445 | 1923 | #define SDEBUG_RLUN_ARR_SZ 256 |
1da177e4 LT |
1924 | |
1925 | static int resp_report_luns(struct scsi_cmnd * scp, | |
1926 | struct sdebug_dev_info * devip) | |
1927 | { | |
1928 | unsigned int alloc_len; | |
c65b1445 | 1929 | int lun_cnt, i, upper, num, n, wlun, lun; |
1da177e4 LT |
1930 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
1931 | int select_report = (int)cmd[2]; | |
1932 | struct scsi_lun *one_lun; | |
1933 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; | |
c65b1445 | 1934 | unsigned char * max_addr; |
1da177e4 LT |
1935 | |
1936 | alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); | |
c65b1445 | 1937 | if ((alloc_len < 4) || (select_report > 2)) { |
1da177e4 LT |
1938 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1939 | 0); | |
1940 | return check_condition_result; | |
1941 | } | |
1942 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ | |
1943 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); | |
1944 | lun_cnt = scsi_debug_max_luns; | |
c65b1445 DG |
1945 | if (1 == select_report) |
1946 | lun_cnt = 0; | |
1947 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) | |
1948 | --lun_cnt; | |
1949 | wlun = (select_report > 0) ? 1 : 0; | |
1950 | num = lun_cnt + wlun; | |
1951 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; | |
1952 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; | |
1953 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / | |
1954 | sizeof(struct scsi_lun)), num); | |
1955 | if (n < num) { | |
1956 | wlun = 0; | |
1957 | lun_cnt = n; | |
1958 | } | |
1da177e4 | 1959 | one_lun = (struct scsi_lun *) &arr[8]; |
c65b1445 DG |
1960 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
1961 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); | |
1962 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); | |
1963 | i++, lun++) { | |
1964 | upper = (lun >> 8) & 0x3f; | |
1da177e4 LT |
1965 | if (upper) |
1966 | one_lun[i].scsi_lun[0] = | |
1967 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); | |
c65b1445 DG |
1968 | one_lun[i].scsi_lun[1] = lun & 0xff; |
1969 | } | |
1970 | if (wlun) { | |
1971 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; | |
1972 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; | |
1973 | i++; | |
1da177e4 | 1974 | } |
c65b1445 | 1975 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
1da177e4 LT |
1976 | return fill_from_dev_buffer(scp, arr, |
1977 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); | |
1978 | } | |
1979 | ||
c639d14e FT |
1980 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
1981 | unsigned int num, struct sdebug_dev_info *devip) | |
1982 | { | |
1983 | int i, j, ret = -1; | |
1984 | unsigned char *kaddr, *buf; | |
1985 | unsigned int offset; | |
1986 | struct scatterlist *sg; | |
1987 | struct scsi_data_buffer *sdb = scsi_in(scp); | |
1988 | ||
1989 | /* better not to use temporary buffer. */ | |
1990 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); | |
1991 | if (!buf) | |
1992 | return ret; | |
1993 | ||
21a61829 | 1994 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
c639d14e FT |
1995 | |
1996 | offset = 0; | |
1997 | for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) { | |
1998 | kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); | |
1999 | if (!kaddr) | |
2000 | goto out; | |
2001 | ||
2002 | for (j = 0; j < sg->length; j++) | |
2003 | *(kaddr + sg->offset + j) ^= *(buf + offset + j); | |
2004 | ||
2005 | offset += sg->length; | |
2006 | kunmap_atomic(kaddr, KM_USER0); | |
2007 | } | |
2008 | ret = 0; | |
2009 | out: | |
2010 | kfree(buf); | |
2011 | ||
2012 | return ret; | |
2013 | } | |
2014 | ||
1da177e4 LT |
2015 | /* When timer goes off this function is called. */ |
2016 | static void timer_intr_handler(unsigned long indx) | |
2017 | { | |
2018 | struct sdebug_queued_cmd * sqcp; | |
2019 | unsigned long iflags; | |
2020 | ||
2021 | if (indx >= SCSI_DEBUG_CANQUEUE) { | |
2022 | printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " | |
2023 | "large\n"); | |
2024 | return; | |
2025 | } | |
2026 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2027 | sqcp = &queued_arr[(int)indx]; | |
2028 | if (! sqcp->in_use) { | |
2029 | printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected " | |
2030 | "interrupt\n"); | |
2031 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2032 | return; | |
2033 | } | |
2034 | sqcp->in_use = 0; | |
2035 | if (sqcp->done_funct) { | |
2036 | sqcp->a_cmnd->result = sqcp->scsi_result; | |
2037 | sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */ | |
2038 | } | |
2039 | sqcp->done_funct = NULL; | |
2040 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2041 | } | |
2042 | ||
1da177e4 | 2043 | |
8dea0d02 FT |
2044 | static struct sdebug_dev_info * |
2045 | sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags) | |
5cb2fc06 FT |
2046 | { |
2047 | struct sdebug_dev_info *devip; | |
2048 | ||
2049 | devip = kzalloc(sizeof(*devip), flags); | |
2050 | if (devip) { | |
2051 | devip->sdbg_host = sdbg_host; | |
2052 | list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); | |
2053 | } | |
2054 | return devip; | |
2055 | } | |
2056 | ||
1da177e4 LT |
2057 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
2058 | { | |
2059 | struct sdebug_host_info * sdbg_host; | |
2060 | struct sdebug_dev_info * open_devip = NULL; | |
2061 | struct sdebug_dev_info * devip = | |
2062 | (struct sdebug_dev_info *)sdev->hostdata; | |
2063 | ||
2064 | if (devip) | |
2065 | return devip; | |
d1e4c9c5 FT |
2066 | sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
2067 | if (!sdbg_host) { | |
1da177e4 LT |
2068 | printk(KERN_ERR "Host info NULL\n"); |
2069 | return NULL; | |
2070 | } | |
2071 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { | |
2072 | if ((devip->used) && (devip->channel == sdev->channel) && | |
2073 | (devip->target == sdev->id) && | |
2074 | (devip->lun == sdev->lun)) | |
2075 | return devip; | |
2076 | else { | |
2077 | if ((!devip->used) && (!open_devip)) | |
2078 | open_devip = devip; | |
2079 | } | |
2080 | } | |
5cb2fc06 FT |
2081 | if (!open_devip) { /* try and make a new one */ |
2082 | open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); | |
2083 | if (!open_devip) { | |
1da177e4 | 2084 | printk(KERN_ERR "%s: out of memory at line %d\n", |
cadbd4a5 | 2085 | __func__, __LINE__); |
1da177e4 LT |
2086 | return NULL; |
2087 | } | |
1da177e4 | 2088 | } |
a75869d1 FT |
2089 | |
2090 | open_devip->channel = sdev->channel; | |
2091 | open_devip->target = sdev->id; | |
2092 | open_devip->lun = sdev->lun; | |
2093 | open_devip->sdbg_host = sdbg_host; | |
2094 | open_devip->reset = 1; | |
2095 | open_devip->used = 1; | |
2096 | memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); | |
2097 | if (scsi_debug_dsense) | |
2098 | open_devip->sense_buff[0] = 0x72; | |
2099 | else { | |
2100 | open_devip->sense_buff[0] = 0x70; | |
2101 | open_devip->sense_buff[7] = 0xa; | |
2102 | } | |
2103 | if (sdev->lun == SAM2_WLUN_REPORT_LUNS) | |
2104 | open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; | |
2105 | ||
2106 | return open_devip; | |
1da177e4 LT |
2107 | } |
2108 | ||
8dea0d02 | 2109 | static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
1da177e4 | 2110 | { |
8dea0d02 FT |
2111 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
2112 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", | |
2113 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
75ad23bc | 2114 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); |
8dea0d02 FT |
2115 | return 0; |
2116 | } | |
1da177e4 | 2117 | |
8dea0d02 FT |
2118 | static int scsi_debug_slave_configure(struct scsi_device *sdp) |
2119 | { | |
2120 | struct sdebug_dev_info *devip; | |
a34c4e98 | 2121 | |
8dea0d02 FT |
2122 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
2123 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", | |
2124 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
2125 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) | |
2126 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; | |
2127 | devip = devInfoReg(sdp); | |
2128 | if (NULL == devip) | |
2129 | return 1; /* no resources, will be marked offline */ | |
2130 | sdp->hostdata = devip; | |
2131 | if (sdp->host->cmd_per_lun) | |
2132 | scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, | |
2133 | sdp->host->cmd_per_lun); | |
2134 | blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); | |
2135 | return 0; | |
2136 | } | |
2137 | ||
2138 | static void scsi_debug_slave_destroy(struct scsi_device *sdp) | |
2139 | { | |
2140 | struct sdebug_dev_info *devip = | |
2141 | (struct sdebug_dev_info *)sdp->hostdata; | |
a34c4e98 | 2142 | |
1da177e4 | 2143 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
8dea0d02 FT |
2144 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", |
2145 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
2146 | if (devip) { | |
2147 | /* make this slot avaliable for re-use */ | |
2148 | devip->used = 0; | |
2149 | sdp->hostdata = NULL; | |
2150 | } | |
2151 | } | |
2152 | ||
2153 | /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ | |
2154 | static int stop_queued_cmnd(struct scsi_cmnd *cmnd) | |
2155 | { | |
2156 | unsigned long iflags; | |
2157 | int k; | |
2158 | struct sdebug_queued_cmd *sqcp; | |
2159 | ||
2160 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2161 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2162 | sqcp = &queued_arr[k]; | |
2163 | if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { | |
2164 | del_timer_sync(&sqcp->cmnd_timer); | |
2165 | sqcp->in_use = 0; | |
2166 | sqcp->a_cmnd = NULL; | |
2167 | break; | |
2168 | } | |
2169 | } | |
2170 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2171 | return (k < SCSI_DEBUG_CANQUEUE) ? 1 : 0; | |
2172 | } | |
2173 | ||
2174 | /* Deletes (stops) timers of all queued commands */ | |
2175 | static void stop_all_queued(void) | |
2176 | { | |
2177 | unsigned long iflags; | |
2178 | int k; | |
2179 | struct sdebug_queued_cmd *sqcp; | |
2180 | ||
2181 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2182 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2183 | sqcp = &queued_arr[k]; | |
2184 | if (sqcp->in_use && sqcp->a_cmnd) { | |
2185 | del_timer_sync(&sqcp->cmnd_timer); | |
2186 | sqcp->in_use = 0; | |
2187 | sqcp->a_cmnd = NULL; | |
2188 | } | |
2189 | } | |
2190 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1da177e4 LT |
2191 | } |
2192 | ||
2193 | static int scsi_debug_abort(struct scsi_cmnd * SCpnt) | |
2194 | { | |
2195 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2196 | printk(KERN_INFO "scsi_debug: abort\n"); | |
2197 | ++num_aborts; | |
2198 | stop_queued_cmnd(SCpnt); | |
2199 | return SUCCESS; | |
2200 | } | |
2201 | ||
2202 | static int scsi_debug_biosparam(struct scsi_device *sdev, | |
2203 | struct block_device * bdev, sector_t capacity, int *info) | |
2204 | { | |
2205 | int res; | |
2206 | unsigned char *buf; | |
2207 | ||
2208 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2209 | printk(KERN_INFO "scsi_debug: biosparam\n"); | |
2210 | buf = scsi_bios_ptable(bdev); | |
2211 | if (buf) { | |
2212 | res = scsi_partsize(buf, capacity, | |
2213 | &info[2], &info[0], &info[1]); | |
2214 | kfree(buf); | |
2215 | if (! res) | |
2216 | return res; | |
2217 | } | |
2218 | info[0] = sdebug_heads; | |
2219 | info[1] = sdebug_sectors_per; | |
2220 | info[2] = sdebug_cylinders_per; | |
2221 | return 0; | |
2222 | } | |
2223 | ||
2224 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) | |
2225 | { | |
2226 | struct sdebug_dev_info * devip; | |
2227 | ||
2228 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2229 | printk(KERN_INFO "scsi_debug: device_reset\n"); | |
2230 | ++num_dev_resets; | |
2231 | if (SCpnt) { | |
2232 | devip = devInfoReg(SCpnt->device); | |
2233 | if (devip) | |
2234 | devip->reset = 1; | |
2235 | } | |
2236 | return SUCCESS; | |
2237 | } | |
2238 | ||
2239 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) | |
2240 | { | |
2241 | struct sdebug_host_info *sdbg_host; | |
2242 | struct sdebug_dev_info * dev_info; | |
2243 | struct scsi_device * sdp; | |
2244 | struct Scsi_Host * hp; | |
2245 | ||
2246 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2247 | printk(KERN_INFO "scsi_debug: bus_reset\n"); | |
2248 | ++num_bus_resets; | |
2249 | if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { | |
d1e4c9c5 | 2250 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
1da177e4 LT |
2251 | if (sdbg_host) { |
2252 | list_for_each_entry(dev_info, | |
2253 | &sdbg_host->dev_info_list, | |
2254 | dev_list) | |
2255 | dev_info->reset = 1; | |
2256 | } | |
2257 | } | |
2258 | return SUCCESS; | |
2259 | } | |
2260 | ||
2261 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) | |
2262 | { | |
2263 | struct sdebug_host_info * sdbg_host; | |
2264 | struct sdebug_dev_info * dev_info; | |
2265 | ||
2266 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2267 | printk(KERN_INFO "scsi_debug: host_reset\n"); | |
2268 | ++num_host_resets; | |
2269 | spin_lock(&sdebug_host_list_lock); | |
2270 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
2271 | list_for_each_entry(dev_info, &sdbg_host->dev_info_list, | |
2272 | dev_list) | |
2273 | dev_info->reset = 1; | |
2274 | } | |
2275 | spin_unlock(&sdebug_host_list_lock); | |
2276 | stop_all_queued(); | |
2277 | return SUCCESS; | |
2278 | } | |
2279 | ||
1da177e4 LT |
2280 | /* Initializes timers in queued array */ |
2281 | static void __init init_all_queued(void) | |
2282 | { | |
2283 | unsigned long iflags; | |
2284 | int k; | |
2285 | struct sdebug_queued_cmd * sqcp; | |
2286 | ||
2287 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2288 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2289 | sqcp = &queued_arr[k]; | |
2290 | init_timer(&sqcp->cmnd_timer); | |
2291 | sqcp->in_use = 0; | |
2292 | sqcp->a_cmnd = NULL; | |
2293 | } | |
2294 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2295 | } | |
2296 | ||
f58b0efb | 2297 | static void __init sdebug_build_parts(unsigned char *ramp, |
5f2578e5 | 2298 | unsigned long store_size) |
1da177e4 LT |
2299 | { |
2300 | struct partition * pp; | |
2301 | int starts[SDEBUG_MAX_PARTS + 2]; | |
2302 | int sectors_per_part, num_sectors, k; | |
2303 | int heads_by_sects, start_sec, end_sec; | |
2304 | ||
2305 | /* assume partition table already zeroed */ | |
f58b0efb | 2306 | if ((scsi_debug_num_parts < 1) || (store_size < 1048576)) |
1da177e4 LT |
2307 | return; |
2308 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { | |
2309 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; | |
2310 | printk(KERN_WARNING "scsi_debug:build_parts: reducing " | |
2311 | "partitions to %d\n", SDEBUG_MAX_PARTS); | |
2312 | } | |
c65b1445 | 2313 | num_sectors = (int)sdebug_store_sectors; |
1da177e4 LT |
2314 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
2315 | / scsi_debug_num_parts; | |
2316 | heads_by_sects = sdebug_heads * sdebug_sectors_per; | |
2317 | starts[0] = sdebug_sectors_per; | |
2318 | for (k = 1; k < scsi_debug_num_parts; ++k) | |
2319 | starts[k] = ((k * sectors_per_part) / heads_by_sects) | |
2320 | * heads_by_sects; | |
2321 | starts[scsi_debug_num_parts] = num_sectors; | |
2322 | starts[scsi_debug_num_parts + 1] = 0; | |
2323 | ||
2324 | ramp[510] = 0x55; /* magic partition markings */ | |
2325 | ramp[511] = 0xAA; | |
2326 | pp = (struct partition *)(ramp + 0x1be); | |
2327 | for (k = 0; starts[k + 1]; ++k, ++pp) { | |
2328 | start_sec = starts[k]; | |
2329 | end_sec = starts[k + 1] - 1; | |
2330 | pp->boot_ind = 0; | |
2331 | ||
2332 | pp->cyl = start_sec / heads_by_sects; | |
2333 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) | |
2334 | / sdebug_sectors_per; | |
2335 | pp->sector = (start_sec % sdebug_sectors_per) + 1; | |
2336 | ||
2337 | pp->end_cyl = end_sec / heads_by_sects; | |
2338 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) | |
2339 | / sdebug_sectors_per; | |
2340 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; | |
2341 | ||
2342 | pp->start_sect = start_sec; | |
2343 | pp->nr_sects = end_sec - start_sec + 1; | |
2344 | pp->sys_ind = 0x83; /* plain Linux partition */ | |
2345 | } | |
2346 | } | |
2347 | ||
2348 | static int schedule_resp(struct scsi_cmnd * cmnd, | |
2349 | struct sdebug_dev_info * devip, | |
2350 | done_funct_t done, int scsi_result, int delta_jiff) | |
2351 | { | |
2352 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) { | |
2353 | if (scsi_result) { | |
2354 | struct scsi_device * sdp = cmnd->device; | |
2355 | ||
c65b1445 DG |
2356 | printk(KERN_INFO "scsi_debug: <%u %u %u %u> " |
2357 | "non-zero result=0x%x\n", sdp->host->host_no, | |
2358 | sdp->channel, sdp->id, sdp->lun, scsi_result); | |
1da177e4 LT |
2359 | } |
2360 | } | |
2361 | if (cmnd && devip) { | |
2362 | /* simulate autosense by this driver */ | |
2363 | if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff)) | |
2364 | memcpy(cmnd->sense_buffer, devip->sense_buff, | |
2365 | (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ? | |
2366 | SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE); | |
2367 | } | |
2368 | if (delta_jiff <= 0) { | |
2369 | if (cmnd) | |
2370 | cmnd->result = scsi_result; | |
2371 | if (done) | |
2372 | done(cmnd); | |
2373 | return 0; | |
2374 | } else { | |
2375 | unsigned long iflags; | |
2376 | int k; | |
2377 | struct sdebug_queued_cmd * sqcp = NULL; | |
2378 | ||
2379 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2380 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2381 | sqcp = &queued_arr[k]; | |
2382 | if (! sqcp->in_use) | |
2383 | break; | |
2384 | } | |
2385 | if (k >= SCSI_DEBUG_CANQUEUE) { | |
2386 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2387 | printk(KERN_WARNING "scsi_debug: can_queue exceeded\n"); | |
2388 | return 1; /* report busy to mid level */ | |
2389 | } | |
2390 | sqcp->in_use = 1; | |
2391 | sqcp->a_cmnd = cmnd; | |
2392 | sqcp->scsi_result = scsi_result; | |
2393 | sqcp->done_funct = done; | |
2394 | sqcp->cmnd_timer.function = timer_intr_handler; | |
2395 | sqcp->cmnd_timer.data = k; | |
2396 | sqcp->cmnd_timer.expires = jiffies + delta_jiff; | |
2397 | add_timer(&sqcp->cmnd_timer); | |
2398 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2399 | if (cmnd) | |
2400 | cmnd->result = 0; | |
2401 | return 0; | |
2402 | } | |
2403 | } | |
23183910 DG |
2404 | /* Note: The following macros create attribute files in the |
2405 | /sys/module/scsi_debug/parameters directory. Unfortunately this | |
2406 | driver is unaware of a change and cannot trigger auxiliary actions | |
2407 | as it can when the corresponding attribute in the | |
2408 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. | |
2409 | */ | |
c65b1445 DG |
2410 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
2411 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); | |
2412 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); | |
2413 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); | |
2414 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); | |
23183910 | 2415 | module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); |
c65b1445 DG |
2416 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
2417 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); | |
2418 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); | |
2419 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); | |
2420 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); | |
2421 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); | |
2422 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); | |
2423 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); | |
23183910 DG |
2424 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, |
2425 | S_IRUGO | S_IWUSR); | |
597136ab | 2426 | module_param_named(sector_size, scsi_debug_sector_size, int, S_IRUGO); |
c6a44287 MP |
2427 | module_param_named(dix, scsi_debug_dix, int, S_IRUGO); |
2428 | module_param_named(dif, scsi_debug_dif, int, S_IRUGO); | |
2429 | module_param_named(guard, scsi_debug_guard, int, S_IRUGO); | |
2430 | module_param_named(ato, scsi_debug_ato, int, S_IRUGO); | |
ea61fca5 MP |
2431 | module_param_named(physblk_exp, scsi_debug_physblk_exp, int, S_IRUGO); |
2432 | module_param_named(lowest_aligned, scsi_debug_lowest_aligned, int, S_IRUGO); | |
1da177e4 LT |
2433 | |
2434 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); | |
2435 | MODULE_DESCRIPTION("SCSI debug adapter driver"); | |
2436 | MODULE_LICENSE("GPL"); | |
2437 | MODULE_VERSION(SCSI_DEBUG_VERSION); | |
2438 | ||
2439 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); | |
2440 | MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); | |
c65b1445 DG |
2441 | MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); |
2442 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); | |
beb87c33 | 2443 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
23183910 | 2444 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
c65b1445 DG |
2445 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
2446 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); | |
1da177e4 | 2447 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
c65b1445 | 2448 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
6f3cbf55 | 2449 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
1da177e4 LT |
2450 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
2451 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])"); | |
c65b1445 | 2452 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); |
23183910 | 2453 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
ea61fca5 MP |
2454 | MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)"); |
2455 | MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)"); | |
2456 | MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)"); | |
c6a44287 MP |
2457 | MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); |
2458 | MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); | |
2459 | MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)"); | |
2460 | MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)"); | |
1da177e4 LT |
2461 | |
2462 | static char sdebug_info[256]; | |
2463 | ||
2464 | static const char * scsi_debug_info(struct Scsi_Host * shp) | |
2465 | { | |
2466 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " | |
2467 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, | |
2468 | scsi_debug_version_date, scsi_debug_dev_size_mb, | |
2469 | scsi_debug_opts); | |
2470 | return sdebug_info; | |
2471 | } | |
2472 | ||
2473 | /* scsi_debug_proc_info | |
2474 | * Used if the driver currently has no own support for /proc/scsi | |
2475 | */ | |
2476 | static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset, | |
2477 | int length, int inout) | |
2478 | { | |
2479 | int len, pos, begin; | |
2480 | int orig_length; | |
2481 | ||
2482 | orig_length = length; | |
2483 | ||
2484 | if (inout == 1) { | |
2485 | char arr[16]; | |
2486 | int minLen = length > 15 ? 15 : length; | |
2487 | ||
2488 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
2489 | return -EACCES; | |
2490 | memcpy(arr, buffer, minLen); | |
2491 | arr[minLen] = '\0'; | |
2492 | if (1 != sscanf(arr, "%d", &pos)) | |
2493 | return -EINVAL; | |
2494 | scsi_debug_opts = pos; | |
2495 | if (scsi_debug_every_nth != 0) | |
2496 | scsi_debug_cmnd_count = 0; | |
2497 | return length; | |
2498 | } | |
2499 | begin = 0; | |
2500 | pos = len = sprintf(buffer, "scsi_debug adapter driver, version " | |
2501 | "%s [%s]\n" | |
2502 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " | |
2503 | "every_nth=%d(curr:%d)\n" | |
2504 | "delay=%d, max_luns=%d, scsi_level=%d\n" | |
2505 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" | |
2506 | "number of aborts=%d, device_reset=%d, bus_resets=%d, " | |
c6a44287 | 2507 | "host_resets=%d\ndix_reads=%d dix_writes=%d dif_errors=%d\n", |
1da177e4 LT |
2508 | SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, |
2509 | scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, | |
2510 | scsi_debug_cmnd_count, scsi_debug_delay, | |
2511 | scsi_debug_max_luns, scsi_debug_scsi_level, | |
597136ab MP |
2512 | scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads, |
2513 | sdebug_sectors_per, num_aborts, num_dev_resets, num_bus_resets, | |
c6a44287 | 2514 | num_host_resets, dix_reads, dix_writes, dif_errors); |
1da177e4 LT |
2515 | if (pos < offset) { |
2516 | len = 0; | |
2517 | begin = pos; | |
2518 | } | |
2519 | *start = buffer + (offset - begin); /* Start of wanted data */ | |
2520 | len -= (offset - begin); | |
2521 | if (len > length) | |
2522 | len = length; | |
2523 | return len; | |
2524 | } | |
2525 | ||
2526 | static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf) | |
2527 | { | |
2528 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); | |
2529 | } | |
2530 | ||
2531 | static ssize_t sdebug_delay_store(struct device_driver * ddp, | |
2532 | const char * buf, size_t count) | |
2533 | { | |
2534 | int delay; | |
2535 | char work[20]; | |
2536 | ||
2537 | if (1 == sscanf(buf, "%10s", work)) { | |
2538 | if ((1 == sscanf(work, "%d", &delay)) && (delay >= 0)) { | |
2539 | scsi_debug_delay = delay; | |
2540 | return count; | |
2541 | } | |
2542 | } | |
2543 | return -EINVAL; | |
2544 | } | |
2545 | DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show, | |
2546 | sdebug_delay_store); | |
2547 | ||
2548 | static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf) | |
2549 | { | |
2550 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); | |
2551 | } | |
2552 | ||
2553 | static ssize_t sdebug_opts_store(struct device_driver * ddp, | |
2554 | const char * buf, size_t count) | |
2555 | { | |
2556 | int opts; | |
2557 | char work[20]; | |
2558 | ||
2559 | if (1 == sscanf(buf, "%10s", work)) { | |
2560 | if (0 == strnicmp(work,"0x", 2)) { | |
2561 | if (1 == sscanf(&work[2], "%x", &opts)) | |
2562 | goto opts_done; | |
2563 | } else { | |
2564 | if (1 == sscanf(work, "%d", &opts)) | |
2565 | goto opts_done; | |
2566 | } | |
2567 | } | |
2568 | return -EINVAL; | |
2569 | opts_done: | |
2570 | scsi_debug_opts = opts; | |
2571 | scsi_debug_cmnd_count = 0; | |
2572 | return count; | |
2573 | } | |
2574 | DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show, | |
2575 | sdebug_opts_store); | |
2576 | ||
2577 | static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf) | |
2578 | { | |
2579 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); | |
2580 | } | |
2581 | static ssize_t sdebug_ptype_store(struct device_driver * ddp, | |
2582 | const char * buf, size_t count) | |
2583 | { | |
2584 | int n; | |
2585 | ||
2586 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2587 | scsi_debug_ptype = n; | |
2588 | return count; | |
2589 | } | |
2590 | return -EINVAL; | |
2591 | } | |
2592 | DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store); | |
2593 | ||
2594 | static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf) | |
2595 | { | |
2596 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); | |
2597 | } | |
2598 | static ssize_t sdebug_dsense_store(struct device_driver * ddp, | |
2599 | const char * buf, size_t count) | |
2600 | { | |
2601 | int n; | |
2602 | ||
2603 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2604 | scsi_debug_dsense = n; | |
2605 | return count; | |
2606 | } | |
2607 | return -EINVAL; | |
2608 | } | |
2609 | DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show, | |
2610 | sdebug_dsense_store); | |
2611 | ||
23183910 DG |
2612 | static ssize_t sdebug_fake_rw_show(struct device_driver * ddp, char * buf) |
2613 | { | |
2614 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); | |
2615 | } | |
2616 | static ssize_t sdebug_fake_rw_store(struct device_driver * ddp, | |
2617 | const char * buf, size_t count) | |
2618 | { | |
2619 | int n; | |
2620 | ||
2621 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2622 | scsi_debug_fake_rw = n; | |
2623 | return count; | |
2624 | } | |
2625 | return -EINVAL; | |
2626 | } | |
2627 | DRIVER_ATTR(fake_rw, S_IRUGO | S_IWUSR, sdebug_fake_rw_show, | |
2628 | sdebug_fake_rw_store); | |
2629 | ||
c65b1445 DG |
2630 | static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf) |
2631 | { | |
2632 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); | |
2633 | } | |
2634 | static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp, | |
2635 | const char * buf, size_t count) | |
2636 | { | |
2637 | int n; | |
2638 | ||
2639 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2640 | scsi_debug_no_lun_0 = n; | |
2641 | return count; | |
2642 | } | |
2643 | return -EINVAL; | |
2644 | } | |
2645 | DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show, | |
2646 | sdebug_no_lun_0_store); | |
2647 | ||
1da177e4 LT |
2648 | static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf) |
2649 | { | |
2650 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); | |
2651 | } | |
2652 | static ssize_t sdebug_num_tgts_store(struct device_driver * ddp, | |
2653 | const char * buf, size_t count) | |
2654 | { | |
2655 | int n; | |
2656 | ||
2657 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2658 | scsi_debug_num_tgts = n; | |
2659 | sdebug_max_tgts_luns(); | |
2660 | return count; | |
2661 | } | |
2662 | return -EINVAL; | |
2663 | } | |
2664 | DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show, | |
2665 | sdebug_num_tgts_store); | |
2666 | ||
2667 | static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf) | |
2668 | { | |
2669 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); | |
2670 | } | |
2671 | DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL); | |
2672 | ||
2673 | static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf) | |
2674 | { | |
2675 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); | |
2676 | } | |
2677 | DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL); | |
2678 | ||
2679 | static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf) | |
2680 | { | |
2681 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); | |
2682 | } | |
2683 | static ssize_t sdebug_every_nth_store(struct device_driver * ddp, | |
2684 | const char * buf, size_t count) | |
2685 | { | |
2686 | int nth; | |
2687 | ||
2688 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { | |
2689 | scsi_debug_every_nth = nth; | |
2690 | scsi_debug_cmnd_count = 0; | |
2691 | return count; | |
2692 | } | |
2693 | return -EINVAL; | |
2694 | } | |
2695 | DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show, | |
2696 | sdebug_every_nth_store); | |
2697 | ||
2698 | static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf) | |
2699 | { | |
2700 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); | |
2701 | } | |
2702 | static ssize_t sdebug_max_luns_store(struct device_driver * ddp, | |
2703 | const char * buf, size_t count) | |
2704 | { | |
2705 | int n; | |
2706 | ||
2707 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2708 | scsi_debug_max_luns = n; | |
2709 | sdebug_max_tgts_luns(); | |
2710 | return count; | |
2711 | } | |
2712 | return -EINVAL; | |
2713 | } | |
2714 | DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, | |
2715 | sdebug_max_luns_store); | |
2716 | ||
2717 | static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf) | |
2718 | { | |
2719 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); | |
2720 | } | |
2721 | DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL); | |
2722 | ||
c65b1445 DG |
2723 | static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf) |
2724 | { | |
2725 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); | |
2726 | } | |
2727 | static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp, | |
2728 | const char * buf, size_t count) | |
2729 | { | |
2730 | int n; | |
2731 | ||
2732 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2733 | scsi_debug_virtual_gb = n; | |
28898873 FT |
2734 | |
2735 | sdebug_capacity = get_sdebug_capacity(); | |
2736 | ||
c65b1445 DG |
2737 | return count; |
2738 | } | |
2739 | return -EINVAL; | |
2740 | } | |
2741 | DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show, | |
2742 | sdebug_virtual_gb_store); | |
2743 | ||
1da177e4 LT |
2744 | static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf) |
2745 | { | |
2746 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); | |
2747 | } | |
2748 | ||
2749 | static ssize_t sdebug_add_host_store(struct device_driver * ddp, | |
2750 | const char * buf, size_t count) | |
2751 | { | |
f3df41cf | 2752 | int delta_hosts; |
1da177e4 | 2753 | |
f3df41cf | 2754 | if (sscanf(buf, "%d", &delta_hosts) != 1) |
1da177e4 | 2755 | return -EINVAL; |
1da177e4 LT |
2756 | if (delta_hosts > 0) { |
2757 | do { | |
2758 | sdebug_add_adapter(); | |
2759 | } while (--delta_hosts); | |
2760 | } else if (delta_hosts < 0) { | |
2761 | do { | |
2762 | sdebug_remove_adapter(); | |
2763 | } while (++delta_hosts); | |
2764 | } | |
2765 | return count; | |
2766 | } | |
f3df41cf | 2767 | DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show, |
1da177e4 LT |
2768 | sdebug_add_host_store); |
2769 | ||
23183910 DG |
2770 | static ssize_t sdebug_vpd_use_hostno_show(struct device_driver * ddp, |
2771 | char * buf) | |
2772 | { | |
2773 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); | |
2774 | } | |
2775 | static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp, | |
2776 | const char * buf, size_t count) | |
2777 | { | |
2778 | int n; | |
2779 | ||
2780 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2781 | scsi_debug_vpd_use_hostno = n; | |
2782 | return count; | |
2783 | } | |
2784 | return -EINVAL; | |
2785 | } | |
2786 | DRIVER_ATTR(vpd_use_hostno, S_IRUGO | S_IWUSR, sdebug_vpd_use_hostno_show, | |
2787 | sdebug_vpd_use_hostno_store); | |
2788 | ||
597136ab MP |
2789 | static ssize_t sdebug_sector_size_show(struct device_driver * ddp, char * buf) |
2790 | { | |
2791 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_sector_size); | |
2792 | } | |
2793 | DRIVER_ATTR(sector_size, S_IRUGO, sdebug_sector_size_show, NULL); | |
2794 | ||
c6a44287 MP |
2795 | static ssize_t sdebug_dix_show(struct device_driver *ddp, char *buf) |
2796 | { | |
2797 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dix); | |
2798 | } | |
2799 | DRIVER_ATTR(dix, S_IRUGO, sdebug_dix_show, NULL); | |
2800 | ||
2801 | static ssize_t sdebug_dif_show(struct device_driver *ddp, char *buf) | |
2802 | { | |
2803 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dif); | |
2804 | } | |
2805 | DRIVER_ATTR(dif, S_IRUGO, sdebug_dif_show, NULL); | |
2806 | ||
2807 | static ssize_t sdebug_guard_show(struct device_driver *ddp, char *buf) | |
2808 | { | |
2809 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_guard); | |
2810 | } | |
2811 | DRIVER_ATTR(guard, S_IRUGO, sdebug_guard_show, NULL); | |
2812 | ||
2813 | static ssize_t sdebug_ato_show(struct device_driver *ddp, char *buf) | |
2814 | { | |
2815 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ato); | |
2816 | } | |
2817 | DRIVER_ATTR(ato, S_IRUGO, sdebug_ato_show, NULL); | |
2818 | ||
2819 | ||
23183910 DG |
2820 | /* Note: The following function creates attribute files in the |
2821 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these | |
2822 | files (over those found in the /sys/module/scsi_debug/parameters | |
2823 | directory) is that auxiliary actions can be triggered when an attribute | |
2824 | is changed. For example see: sdebug_add_host_store() above. | |
2825 | */ | |
6ecaff7f | 2826 | static int do_create_driverfs_files(void) |
1da177e4 | 2827 | { |
6ecaff7f RD |
2828 | int ret; |
2829 | ||
2830 | ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host); | |
2831 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay); | |
2832 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); | |
2833 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense); | |
2834 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth); | |
23183910 | 2835 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
6ecaff7f | 2836 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
23183910 | 2837 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); |
6ecaff7f | 2838 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
23183910 | 2839 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
6ecaff7f RD |
2840 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
2841 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts); | |
2842 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); | |
23183910 DG |
2843 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); |
2844 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); | |
597136ab | 2845 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_sector_size); |
c6a44287 MP |
2846 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dix); |
2847 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dif); | |
2848 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_guard); | |
2849 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ato); | |
6ecaff7f | 2850 | return ret; |
1da177e4 LT |
2851 | } |
2852 | ||
2853 | static void do_remove_driverfs_files(void) | |
2854 | { | |
c6a44287 MP |
2855 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ato); |
2856 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_guard); | |
2857 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dif); | |
2858 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dix); | |
597136ab | 2859 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_sector_size); |
23183910 DG |
2860 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); |
2861 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); | |
1da177e4 LT |
2862 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
2863 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts); | |
2864 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype); | |
1da177e4 | 2865 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
23183910 DG |
2866 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
2867 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); | |
1da177e4 | 2868 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
23183910 | 2869 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
1da177e4 LT |
2870 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
2871 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense); | |
2872 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); | |
2873 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay); | |
2874 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); | |
2875 | } | |
2876 | ||
8dea0d02 FT |
2877 | static void pseudo_0_release(struct device *dev) |
2878 | { | |
2879 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2880 | printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n"); | |
2881 | } | |
2882 | ||
2883 | static struct device pseudo_primary = { | |
71610f55 | 2884 | .init_name = "pseudo_0", |
8dea0d02 FT |
2885 | .release = pseudo_0_release, |
2886 | }; | |
2887 | ||
1da177e4 LT |
2888 | static int __init scsi_debug_init(void) |
2889 | { | |
5f2578e5 | 2890 | unsigned long sz; |
1da177e4 LT |
2891 | int host_to_add; |
2892 | int k; | |
6ecaff7f | 2893 | int ret; |
1da177e4 | 2894 | |
597136ab MP |
2895 | switch (scsi_debug_sector_size) { |
2896 | case 512: | |
2897 | case 1024: | |
2898 | case 2048: | |
2899 | case 4096: | |
2900 | break; | |
2901 | default: | |
c6a44287 | 2902 | printk(KERN_ERR "scsi_debug_init: invalid sector_size %d\n", |
597136ab MP |
2903 | scsi_debug_sector_size); |
2904 | return -EINVAL; | |
2905 | } | |
2906 | ||
c6a44287 MP |
2907 | switch (scsi_debug_dif) { |
2908 | ||
2909 | case SD_DIF_TYPE0_PROTECTION: | |
2910 | case SD_DIF_TYPE1_PROTECTION: | |
395cef03 | 2911 | case SD_DIF_TYPE2_PROTECTION: |
c6a44287 MP |
2912 | case SD_DIF_TYPE3_PROTECTION: |
2913 | break; | |
2914 | ||
2915 | default: | |
395cef03 | 2916 | printk(KERN_ERR "scsi_debug_init: dif must be 0, 1, 2 or 3\n"); |
c6a44287 MP |
2917 | return -EINVAL; |
2918 | } | |
2919 | ||
2920 | if (scsi_debug_guard > 1) { | |
2921 | printk(KERN_ERR "scsi_debug_init: guard must be 0 or 1\n"); | |
2922 | return -EINVAL; | |
2923 | } | |
2924 | ||
2925 | if (scsi_debug_ato > 1) { | |
2926 | printk(KERN_ERR "scsi_debug_init: ato must be 0 or 1\n"); | |
2927 | return -EINVAL; | |
2928 | } | |
2929 | ||
ea61fca5 MP |
2930 | if (scsi_debug_physblk_exp > 15) { |
2931 | printk(KERN_ERR "scsi_debug_init: invalid physblk_exp %u\n", | |
2932 | scsi_debug_physblk_exp); | |
2933 | return -EINVAL; | |
2934 | } | |
2935 | ||
2936 | if (scsi_debug_lowest_aligned > 0x3fff) { | |
2937 | printk(KERN_ERR "scsi_debug_init: lowest_aligned too big: %u\n", | |
2938 | scsi_debug_lowest_aligned); | |
2939 | return -EINVAL; | |
2940 | } | |
2941 | ||
1da177e4 LT |
2942 | if (scsi_debug_dev_size_mb < 1) |
2943 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ | |
5f2578e5 | 2944 | sz = (unsigned long)scsi_debug_dev_size_mb * 1048576; |
597136ab | 2945 | sdebug_store_sectors = sz / scsi_debug_sector_size; |
28898873 | 2946 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 LT |
2947 | |
2948 | /* play around with geometry, don't waste too much on track 0 */ | |
2949 | sdebug_heads = 8; | |
2950 | sdebug_sectors_per = 32; | |
2951 | if (scsi_debug_dev_size_mb >= 16) | |
2952 | sdebug_heads = 32; | |
2953 | else if (scsi_debug_dev_size_mb >= 256) | |
2954 | sdebug_heads = 64; | |
2955 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
2956 | (sdebug_sectors_per * sdebug_heads); | |
2957 | if (sdebug_cylinders_per >= 1024) { | |
2958 | /* other LLDs do this; implies >= 1GB ram disk ... */ | |
2959 | sdebug_heads = 255; | |
2960 | sdebug_sectors_per = 63; | |
2961 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
2962 | (sdebug_sectors_per * sdebug_heads); | |
2963 | } | |
2964 | ||
1da177e4 LT |
2965 | fake_storep = vmalloc(sz); |
2966 | if (NULL == fake_storep) { | |
2967 | printk(KERN_ERR "scsi_debug_init: out of memory, 1\n"); | |
2968 | return -ENOMEM; | |
2969 | } | |
2970 | memset(fake_storep, 0, sz); | |
2971 | if (scsi_debug_num_parts > 0) | |
f58b0efb | 2972 | sdebug_build_parts(fake_storep, sz); |
1da177e4 | 2973 | |
c6a44287 MP |
2974 | if (scsi_debug_dif) { |
2975 | int dif_size; | |
2976 | ||
2977 | dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple); | |
2978 | dif_storep = vmalloc(dif_size); | |
2979 | ||
2980 | printk(KERN_ERR "scsi_debug_init: dif_storep %u bytes @ %p\n", | |
2981 | dif_size, dif_storep); | |
2982 | ||
2983 | if (dif_storep == NULL) { | |
2984 | printk(KERN_ERR "scsi_debug_init: out of mem. (DIX)\n"); | |
2985 | ret = -ENOMEM; | |
2986 | goto free_vm; | |
2987 | } | |
2988 | ||
2989 | memset(dif_storep, 0xff, dif_size); | |
2990 | } | |
2991 | ||
6ecaff7f RD |
2992 | ret = device_register(&pseudo_primary); |
2993 | if (ret < 0) { | |
2994 | printk(KERN_WARNING "scsi_debug: device_register error: %d\n", | |
2995 | ret); | |
2996 | goto free_vm; | |
2997 | } | |
2998 | ret = bus_register(&pseudo_lld_bus); | |
2999 | if (ret < 0) { | |
3000 | printk(KERN_WARNING "scsi_debug: bus_register error: %d\n", | |
3001 | ret); | |
3002 | goto dev_unreg; | |
3003 | } | |
3004 | ret = driver_register(&sdebug_driverfs_driver); | |
3005 | if (ret < 0) { | |
3006 | printk(KERN_WARNING "scsi_debug: driver_register error: %d\n", | |
3007 | ret); | |
3008 | goto bus_unreg; | |
3009 | } | |
3010 | ret = do_create_driverfs_files(); | |
3011 | if (ret < 0) { | |
3012 | printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n", | |
3013 | ret); | |
3014 | goto del_files; | |
3015 | } | |
1da177e4 | 3016 | |
6ecaff7f | 3017 | init_all_queued(); |
1da177e4 | 3018 | |
1da177e4 LT |
3019 | host_to_add = scsi_debug_add_host; |
3020 | scsi_debug_add_host = 0; | |
3021 | ||
3022 | for (k = 0; k < host_to_add; k++) { | |
3023 | if (sdebug_add_adapter()) { | |
3024 | printk(KERN_ERR "scsi_debug_init: " | |
3025 | "sdebug_add_adapter failed k=%d\n", k); | |
3026 | break; | |
3027 | } | |
3028 | } | |
3029 | ||
3030 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
3031 | printk(KERN_INFO "scsi_debug_init: built %d host(s)\n", | |
3032 | scsi_debug_add_host); | |
3033 | } | |
3034 | return 0; | |
6ecaff7f RD |
3035 | |
3036 | del_files: | |
3037 | do_remove_driverfs_files(); | |
3038 | driver_unregister(&sdebug_driverfs_driver); | |
3039 | bus_unreg: | |
3040 | bus_unregister(&pseudo_lld_bus); | |
3041 | dev_unreg: | |
3042 | device_unregister(&pseudo_primary); | |
3043 | free_vm: | |
c6a44287 MP |
3044 | if (dif_storep) |
3045 | vfree(dif_storep); | |
6ecaff7f RD |
3046 | vfree(fake_storep); |
3047 | ||
3048 | return ret; | |
1da177e4 LT |
3049 | } |
3050 | ||
3051 | static void __exit scsi_debug_exit(void) | |
3052 | { | |
3053 | int k = scsi_debug_add_host; | |
3054 | ||
3055 | stop_all_queued(); | |
3056 | for (; k; k--) | |
3057 | sdebug_remove_adapter(); | |
3058 | do_remove_driverfs_files(); | |
3059 | driver_unregister(&sdebug_driverfs_driver); | |
3060 | bus_unregister(&pseudo_lld_bus); | |
3061 | device_unregister(&pseudo_primary); | |
3062 | ||
c6a44287 MP |
3063 | if (dif_storep) |
3064 | vfree(dif_storep); | |
3065 | ||
1da177e4 LT |
3066 | vfree(fake_storep); |
3067 | } | |
3068 | ||
3069 | device_initcall(scsi_debug_init); | |
3070 | module_exit(scsi_debug_exit); | |
3071 | ||
1da177e4 LT |
3072 | static void sdebug_release_adapter(struct device * dev) |
3073 | { | |
3074 | struct sdebug_host_info *sdbg_host; | |
3075 | ||
3076 | sdbg_host = to_sdebug_host(dev); | |
3077 | kfree(sdbg_host); | |
3078 | } | |
3079 | ||
3080 | static int sdebug_add_adapter(void) | |
3081 | { | |
3082 | int k, devs_per_host; | |
3083 | int error = 0; | |
3084 | struct sdebug_host_info *sdbg_host; | |
8b40228f | 3085 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 | 3086 | |
c65b1445 | 3087 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
1da177e4 LT |
3088 | if (NULL == sdbg_host) { |
3089 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
cadbd4a5 | 3090 | __func__, __LINE__); |
1da177e4 LT |
3091 | return -ENOMEM; |
3092 | } | |
3093 | ||
1da177e4 LT |
3094 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
3095 | ||
3096 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; | |
3097 | for (k = 0; k < devs_per_host; k++) { | |
5cb2fc06 FT |
3098 | sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); |
3099 | if (!sdbg_devinfo) { | |
1da177e4 | 3100 | printk(KERN_ERR "%s: out of memory at line %d\n", |
cadbd4a5 | 3101 | __func__, __LINE__); |
1da177e4 LT |
3102 | error = -ENOMEM; |
3103 | goto clean; | |
3104 | } | |
1da177e4 LT |
3105 | } |
3106 | ||
3107 | spin_lock(&sdebug_host_list_lock); | |
3108 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); | |
3109 | spin_unlock(&sdebug_host_list_lock); | |
3110 | ||
3111 | sdbg_host->dev.bus = &pseudo_lld_bus; | |
3112 | sdbg_host->dev.parent = &pseudo_primary; | |
3113 | sdbg_host->dev.release = &sdebug_release_adapter; | |
71610f55 | 3114 | dev_set_name(&sdbg_host->dev, "adapter%d", scsi_debug_add_host); |
1da177e4 LT |
3115 | |
3116 | error = device_register(&sdbg_host->dev); | |
3117 | ||
3118 | if (error) | |
3119 | goto clean; | |
3120 | ||
3121 | ++scsi_debug_add_host; | |
3122 | return error; | |
3123 | ||
3124 | clean: | |
8b40228f FT |
3125 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
3126 | dev_list) { | |
1da177e4 LT |
3127 | list_del(&sdbg_devinfo->dev_list); |
3128 | kfree(sdbg_devinfo); | |
3129 | } | |
3130 | ||
3131 | kfree(sdbg_host); | |
3132 | return error; | |
3133 | } | |
3134 | ||
3135 | static void sdebug_remove_adapter(void) | |
3136 | { | |
3137 | struct sdebug_host_info * sdbg_host = NULL; | |
3138 | ||
3139 | spin_lock(&sdebug_host_list_lock); | |
3140 | if (!list_empty(&sdebug_host_list)) { | |
3141 | sdbg_host = list_entry(sdebug_host_list.prev, | |
3142 | struct sdebug_host_info, host_list); | |
3143 | list_del(&sdbg_host->host_list); | |
3144 | } | |
3145 | spin_unlock(&sdebug_host_list_lock); | |
3146 | ||
3147 | if (!sdbg_host) | |
3148 | return; | |
3149 | ||
3150 | device_unregister(&sdbg_host->dev); | |
3151 | --scsi_debug_add_host; | |
3152 | } | |
3153 | ||
639db475 FT |
3154 | static |
3155 | int scsi_debug_queuecommand(struct scsi_cmnd *SCpnt, done_funct_t done) | |
3156 | { | |
3157 | unsigned char *cmd = (unsigned char *) SCpnt->cmnd; | |
3158 | int len, k; | |
3159 | unsigned int num; | |
3160 | unsigned long long lba; | |
395cef03 | 3161 | u32 ei_lba; |
639db475 FT |
3162 | int errsts = 0; |
3163 | int target = SCpnt->device->id; | |
3164 | struct sdebug_dev_info *devip = NULL; | |
3165 | int inj_recovered = 0; | |
3166 | int inj_transport = 0; | |
c6a44287 MP |
3167 | int inj_dif = 0; |
3168 | int inj_dix = 0; | |
639db475 FT |
3169 | int delay_override = 0; |
3170 | ||
3171 | scsi_set_resid(SCpnt, 0); | |
3172 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { | |
3173 | printk(KERN_INFO "scsi_debug: cmd "); | |
3174 | for (k = 0, len = SCpnt->cmd_len; k < len; ++k) | |
3175 | printk("%02x ", (int)cmd[k]); | |
3176 | printk("\n"); | |
3177 | } | |
3178 | ||
3179 | if (target == SCpnt->device->host->hostt->this_id) { | |
3180 | printk(KERN_INFO "scsi_debug: initiator's id used as " | |
3181 | "target!\n"); | |
3182 | return schedule_resp(SCpnt, NULL, done, | |
3183 | DID_NO_CONNECT << 16, 0); | |
3184 | } | |
3185 | ||
3186 | if ((SCpnt->device->lun >= scsi_debug_max_luns) && | |
3187 | (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) | |
3188 | return schedule_resp(SCpnt, NULL, done, | |
3189 | DID_NO_CONNECT << 16, 0); | |
3190 | devip = devInfoReg(SCpnt->device); | |
3191 | if (NULL == devip) | |
3192 | return schedule_resp(SCpnt, NULL, done, | |
3193 | DID_NO_CONNECT << 16, 0); | |
3194 | ||
3195 | if ((scsi_debug_every_nth != 0) && | |
3196 | (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { | |
3197 | scsi_debug_cmnd_count = 0; | |
3198 | if (scsi_debug_every_nth < -1) | |
3199 | scsi_debug_every_nth = -1; | |
3200 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) | |
3201 | return 0; /* ignore command causing timeout */ | |
3202 | else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) | |
3203 | inj_recovered = 1; /* to reads and writes below */ | |
3204 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts) | |
3205 | inj_transport = 1; /* to reads and writes below */ | |
c6a44287 MP |
3206 | else if (SCSI_DEBUG_OPT_DIF_ERR & scsi_debug_opts) |
3207 | inj_dif = 1; /* to reads and writes below */ | |
3208 | else if (SCSI_DEBUG_OPT_DIX_ERR & scsi_debug_opts) | |
3209 | inj_dix = 1; /* to reads and writes below */ | |
639db475 FT |
3210 | } |
3211 | ||
3212 | if (devip->wlun) { | |
3213 | switch (*cmd) { | |
3214 | case INQUIRY: | |
3215 | case REQUEST_SENSE: | |
3216 | case TEST_UNIT_READY: | |
3217 | case REPORT_LUNS: | |
3218 | break; /* only allowable wlun commands */ | |
3219 | default: | |
3220 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
3221 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x " | |
3222 | "not supported for wlun\n", *cmd); | |
3223 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
3224 | INVALID_OPCODE, 0); | |
3225 | errsts = check_condition_result; | |
3226 | return schedule_resp(SCpnt, devip, done, errsts, | |
3227 | 0); | |
3228 | } | |
3229 | } | |
3230 | ||
3231 | switch (*cmd) { | |
3232 | case INQUIRY: /* mandatory, ignore unit attention */ | |
3233 | delay_override = 1; | |
3234 | errsts = resp_inquiry(SCpnt, target, devip); | |
3235 | break; | |
3236 | case REQUEST_SENSE: /* mandatory, ignore unit attention */ | |
3237 | delay_override = 1; | |
3238 | errsts = resp_requests(SCpnt, devip); | |
3239 | break; | |
3240 | case REZERO_UNIT: /* actually this is REWIND for SSC */ | |
3241 | case START_STOP: | |
3242 | errsts = resp_start_stop(SCpnt, devip); | |
3243 | break; | |
3244 | case ALLOW_MEDIUM_REMOVAL: | |
3245 | errsts = check_readiness(SCpnt, 1, devip); | |
3246 | if (errsts) | |
3247 | break; | |
3248 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
3249 | printk(KERN_INFO "scsi_debug: Medium removal %s\n", | |
3250 | cmd[4] ? "inhibited" : "enabled"); | |
3251 | break; | |
3252 | case SEND_DIAGNOSTIC: /* mandatory */ | |
3253 | errsts = check_readiness(SCpnt, 1, devip); | |
3254 | break; | |
3255 | case TEST_UNIT_READY: /* mandatory */ | |
3256 | delay_override = 1; | |
3257 | errsts = check_readiness(SCpnt, 0, devip); | |
3258 | break; | |
3259 | case RESERVE: | |
3260 | errsts = check_readiness(SCpnt, 1, devip); | |
3261 | break; | |
3262 | case RESERVE_10: | |
3263 | errsts = check_readiness(SCpnt, 1, devip); | |
3264 | break; | |
3265 | case RELEASE: | |
3266 | errsts = check_readiness(SCpnt, 1, devip); | |
3267 | break; | |
3268 | case RELEASE_10: | |
3269 | errsts = check_readiness(SCpnt, 1, devip); | |
3270 | break; | |
3271 | case READ_CAPACITY: | |
3272 | errsts = resp_readcap(SCpnt, devip); | |
3273 | break; | |
3274 | case SERVICE_ACTION_IN: | |
3275 | if (SAI_READ_CAPACITY_16 != cmd[1]) { | |
3276 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
3277 | INVALID_OPCODE, 0); | |
3278 | errsts = check_condition_result; | |
3279 | break; | |
3280 | } | |
3281 | errsts = resp_readcap16(SCpnt, devip); | |
3282 | break; | |
3283 | case MAINTENANCE_IN: | |
3284 | if (MI_REPORT_TARGET_PGS != cmd[1]) { | |
3285 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
3286 | INVALID_OPCODE, 0); | |
3287 | errsts = check_condition_result; | |
3288 | break; | |
3289 | } | |
3290 | errsts = resp_report_tgtpgs(SCpnt, devip); | |
3291 | break; | |
3292 | case READ_16: | |
3293 | case READ_12: | |
3294 | case READ_10: | |
395cef03 MP |
3295 | /* READ{10,12,16} and DIF Type 2 are natural enemies */ |
3296 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
3297 | cmd[1] & 0xe0) { | |
3298 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
3299 | INVALID_COMMAND_OPCODE, 0); | |
3300 | errsts = check_condition_result; | |
3301 | break; | |
3302 | } | |
3303 | ||
3304 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || | |
3305 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && | |
3306 | (cmd[1] & 0xe0) == 0) | |
3307 | printk(KERN_ERR "Unprotected RD/WR to DIF device\n"); | |
3308 | ||
3309 | /* fall through */ | |
639db475 | 3310 | case READ_6: |
395cef03 | 3311 | read: |
639db475 FT |
3312 | errsts = check_readiness(SCpnt, 0, devip); |
3313 | if (errsts) | |
3314 | break; | |
3315 | if (scsi_debug_fake_rw) | |
3316 | break; | |
395cef03 MP |
3317 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
3318 | errsts = resp_read(SCpnt, lba, num, devip, ei_lba); | |
639db475 FT |
3319 | if (inj_recovered && (0 == errsts)) { |
3320 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
3321 | THRESHOLD_EXCEEDED, 0); | |
3322 | errsts = check_condition_result; | |
3323 | } else if (inj_transport && (0 == errsts)) { | |
3324 | mk_sense_buffer(devip, ABORTED_COMMAND, | |
3325 | TRANSPORT_PROBLEM, ACK_NAK_TO); | |
3326 | errsts = check_condition_result; | |
c6a44287 MP |
3327 | } else if (inj_dif && (0 == errsts)) { |
3328 | mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1); | |
3329 | errsts = illegal_condition_result; | |
3330 | } else if (inj_dix && (0 == errsts)) { | |
3331 | mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1); | |
3332 | errsts = illegal_condition_result; | |
639db475 FT |
3333 | } |
3334 | break; | |
3335 | case REPORT_LUNS: /* mandatory, ignore unit attention */ | |
3336 | delay_override = 1; | |
3337 | errsts = resp_report_luns(SCpnt, devip); | |
3338 | break; | |
3339 | case VERIFY: /* 10 byte SBC-2 command */ | |
3340 | errsts = check_readiness(SCpnt, 0, devip); | |
3341 | break; | |
3342 | case WRITE_16: | |
3343 | case WRITE_12: | |
3344 | case WRITE_10: | |
395cef03 MP |
3345 | /* WRITE{10,12,16} and DIF Type 2 are natural enemies */ |
3346 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
3347 | cmd[1] & 0xe0) { | |
3348 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
3349 | INVALID_COMMAND_OPCODE, 0); | |
3350 | errsts = check_condition_result; | |
3351 | break; | |
3352 | } | |
3353 | ||
3354 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || | |
3355 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && | |
3356 | (cmd[1] & 0xe0) == 0) | |
3357 | printk(KERN_ERR "Unprotected RD/WR to DIF device\n"); | |
3358 | ||
3359 | /* fall through */ | |
639db475 | 3360 | case WRITE_6: |
395cef03 | 3361 | write: |
639db475 FT |
3362 | errsts = check_readiness(SCpnt, 0, devip); |
3363 | if (errsts) | |
3364 | break; | |
3365 | if (scsi_debug_fake_rw) | |
3366 | break; | |
395cef03 MP |
3367 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
3368 | errsts = resp_write(SCpnt, lba, num, devip, ei_lba); | |
639db475 FT |
3369 | if (inj_recovered && (0 == errsts)) { |
3370 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
3371 | THRESHOLD_EXCEEDED, 0); | |
3372 | errsts = check_condition_result; | |
c6a44287 MP |
3373 | } else if (inj_dif && (0 == errsts)) { |
3374 | mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1); | |
3375 | errsts = illegal_condition_result; | |
3376 | } else if (inj_dix && (0 == errsts)) { | |
3377 | mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1); | |
3378 | errsts = illegal_condition_result; | |
639db475 FT |
3379 | } |
3380 | break; | |
3381 | case MODE_SENSE: | |
3382 | case MODE_SENSE_10: | |
3383 | errsts = resp_mode_sense(SCpnt, target, devip); | |
3384 | break; | |
3385 | case MODE_SELECT: | |
3386 | errsts = resp_mode_select(SCpnt, 1, devip); | |
3387 | break; | |
3388 | case MODE_SELECT_10: | |
3389 | errsts = resp_mode_select(SCpnt, 0, devip); | |
3390 | break; | |
3391 | case LOG_SENSE: | |
3392 | errsts = resp_log_sense(SCpnt, devip); | |
3393 | break; | |
3394 | case SYNCHRONIZE_CACHE: | |
3395 | delay_override = 1; | |
3396 | errsts = check_readiness(SCpnt, 0, devip); | |
3397 | break; | |
3398 | case WRITE_BUFFER: | |
3399 | errsts = check_readiness(SCpnt, 1, devip); | |
3400 | break; | |
3401 | case XDWRITEREAD_10: | |
3402 | if (!scsi_bidi_cmnd(SCpnt)) { | |
3403 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
3404 | INVALID_FIELD_IN_CDB, 0); | |
3405 | errsts = check_condition_result; | |
3406 | break; | |
3407 | } | |
3408 | ||
3409 | errsts = check_readiness(SCpnt, 0, devip); | |
3410 | if (errsts) | |
3411 | break; | |
3412 | if (scsi_debug_fake_rw) | |
3413 | break; | |
395cef03 MP |
3414 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
3415 | errsts = resp_read(SCpnt, lba, num, devip, ei_lba); | |
639db475 FT |
3416 | if (errsts) |
3417 | break; | |
395cef03 | 3418 | errsts = resp_write(SCpnt, lba, num, devip, ei_lba); |
639db475 FT |
3419 | if (errsts) |
3420 | break; | |
3421 | errsts = resp_xdwriteread(SCpnt, lba, num, devip); | |
3422 | break; | |
395cef03 MP |
3423 | case VARIABLE_LENGTH_CMD: |
3424 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION) { | |
3425 | ||
3426 | if ((cmd[10] & 0xe0) == 0) | |
3427 | printk(KERN_ERR | |
3428 | "Unprotected RD/WR to DIF device\n"); | |
3429 | ||
3430 | if (cmd[9] == READ_32) { | |
3431 | BUG_ON(SCpnt->cmd_len < 32); | |
3432 | goto read; | |
3433 | } | |
3434 | ||
3435 | if (cmd[9] == WRITE_32) { | |
3436 | BUG_ON(SCpnt->cmd_len < 32); | |
3437 | goto write; | |
3438 | } | |
3439 | } | |
3440 | ||
3441 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
3442 | INVALID_FIELD_IN_CDB, 0); | |
3443 | errsts = check_condition_result; | |
3444 | break; | |
3445 | ||
639db475 FT |
3446 | default: |
3447 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
3448 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " | |
3449 | "supported\n", *cmd); | |
3450 | errsts = check_readiness(SCpnt, 1, devip); | |
3451 | if (errsts) | |
3452 | break; /* Unit attention takes precedence */ | |
3453 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); | |
3454 | errsts = check_condition_result; | |
3455 | break; | |
3456 | } | |
3457 | return schedule_resp(SCpnt, devip, done, errsts, | |
3458 | (delay_override ? 0 : scsi_debug_delay)); | |
3459 | } | |
3460 | ||
9e603ca0 FT |
3461 | static struct scsi_host_template sdebug_driver_template = { |
3462 | .proc_info = scsi_debug_proc_info, | |
3463 | .proc_name = sdebug_proc_name, | |
3464 | .name = "SCSI DEBUG", | |
3465 | .info = scsi_debug_info, | |
3466 | .slave_alloc = scsi_debug_slave_alloc, | |
3467 | .slave_configure = scsi_debug_slave_configure, | |
3468 | .slave_destroy = scsi_debug_slave_destroy, | |
3469 | .ioctl = scsi_debug_ioctl, | |
3470 | .queuecommand = scsi_debug_queuecommand, | |
3471 | .eh_abort_handler = scsi_debug_abort, | |
3472 | .eh_bus_reset_handler = scsi_debug_bus_reset, | |
3473 | .eh_device_reset_handler = scsi_debug_device_reset, | |
3474 | .eh_host_reset_handler = scsi_debug_host_reset, | |
3475 | .bios_param = scsi_debug_biosparam, | |
3476 | .can_queue = SCSI_DEBUG_CANQUEUE, | |
3477 | .this_id = 7, | |
3478 | .sg_tablesize = 256, | |
3479 | .cmd_per_lun = 16, | |
3480 | .max_sectors = 0xffff, | |
3481 | .use_clustering = DISABLE_CLUSTERING, | |
3482 | .module = THIS_MODULE, | |
3483 | }; | |
3484 | ||
1da177e4 LT |
3485 | static int sdebug_driver_probe(struct device * dev) |
3486 | { | |
3487 | int error = 0; | |
3488 | struct sdebug_host_info *sdbg_host; | |
3489 | struct Scsi_Host *hpnt; | |
c6a44287 | 3490 | int host_prot; |
1da177e4 LT |
3491 | |
3492 | sdbg_host = to_sdebug_host(dev); | |
3493 | ||
3494 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); | |
3495 | if (NULL == hpnt) { | |
cadbd4a5 | 3496 | printk(KERN_ERR "%s: scsi_register failed\n", __func__); |
1da177e4 LT |
3497 | error = -ENODEV; |
3498 | return error; | |
3499 | } | |
3500 | ||
3501 | sdbg_host->shost = hpnt; | |
3502 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; | |
3503 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) | |
3504 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
3505 | else | |
3506 | hpnt->max_id = scsi_debug_num_tgts; | |
c65b1445 | 3507 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
1da177e4 | 3508 | |
c6a44287 MP |
3509 | host_prot = 0; |
3510 | ||
3511 | switch (scsi_debug_dif) { | |
3512 | ||
3513 | case SD_DIF_TYPE1_PROTECTION: | |
3514 | host_prot = SHOST_DIF_TYPE1_PROTECTION; | |
3515 | if (scsi_debug_dix) | |
3516 | host_prot |= SHOST_DIX_TYPE1_PROTECTION; | |
3517 | break; | |
3518 | ||
3519 | case SD_DIF_TYPE2_PROTECTION: | |
3520 | host_prot = SHOST_DIF_TYPE2_PROTECTION; | |
3521 | if (scsi_debug_dix) | |
3522 | host_prot |= SHOST_DIX_TYPE2_PROTECTION; | |
3523 | break; | |
3524 | ||
3525 | case SD_DIF_TYPE3_PROTECTION: | |
3526 | host_prot = SHOST_DIF_TYPE3_PROTECTION; | |
3527 | if (scsi_debug_dix) | |
3528 | host_prot |= SHOST_DIX_TYPE3_PROTECTION; | |
3529 | break; | |
3530 | ||
3531 | default: | |
3532 | if (scsi_debug_dix) | |
3533 | host_prot |= SHOST_DIX_TYPE0_PROTECTION; | |
3534 | break; | |
3535 | } | |
3536 | ||
3537 | scsi_host_set_prot(hpnt, host_prot); | |
3538 | ||
3539 | printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n", | |
3540 | (host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", | |
3541 | (host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", | |
3542 | (host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", | |
3543 | (host_prot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", | |
3544 | (host_prot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", | |
3545 | (host_prot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", | |
3546 | (host_prot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); | |
3547 | ||
3548 | if (scsi_debug_guard == 1) | |
3549 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP); | |
3550 | else | |
3551 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC); | |
3552 | ||
1da177e4 LT |
3553 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
3554 | if (error) { | |
cadbd4a5 | 3555 | printk(KERN_ERR "%s: scsi_add_host failed\n", __func__); |
1da177e4 LT |
3556 | error = -ENODEV; |
3557 | scsi_host_put(hpnt); | |
3558 | } else | |
3559 | scsi_scan_host(hpnt); | |
3560 | ||
3561 | ||
3562 | return error; | |
3563 | } | |
3564 | ||
3565 | static int sdebug_driver_remove(struct device * dev) | |
3566 | { | |
1da177e4 | 3567 | struct sdebug_host_info *sdbg_host; |
8b40228f | 3568 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 LT |
3569 | |
3570 | sdbg_host = to_sdebug_host(dev); | |
3571 | ||
3572 | if (!sdbg_host) { | |
3573 | printk(KERN_ERR "%s: Unable to locate host info\n", | |
cadbd4a5 | 3574 | __func__); |
1da177e4 LT |
3575 | return -ENODEV; |
3576 | } | |
3577 | ||
3578 | scsi_remove_host(sdbg_host->shost); | |
3579 | ||
8b40228f FT |
3580 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
3581 | dev_list) { | |
1da177e4 LT |
3582 | list_del(&sdbg_devinfo->dev_list); |
3583 | kfree(sdbg_devinfo); | |
3584 | } | |
3585 | ||
3586 | scsi_host_put(sdbg_host->shost); | |
3587 | return 0; | |
3588 | } | |
3589 | ||
8dea0d02 FT |
3590 | static int pseudo_lld_bus_match(struct device *dev, |
3591 | struct device_driver *dev_driver) | |
1da177e4 | 3592 | { |
8dea0d02 | 3593 | return 1; |
1da177e4 | 3594 | } |
8dea0d02 FT |
3595 | |
3596 | static struct bus_type pseudo_lld_bus = { | |
3597 | .name = "pseudo", | |
3598 | .match = pseudo_lld_bus_match, | |
3599 | .probe = sdebug_driver_probe, | |
3600 | .remove = sdebug_driver_remove, | |
3601 | }; |