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