Commit | Line | Data |
---|---|---|
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 | * | |
78d4e5a0 | 15 | * For documentation see http://sg.danny.cz/sg/sdebug26.html |
1da177e4 LT |
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> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 LT |
34 | #include <linux/types.h> |
35 | #include <linux/string.h> | |
36 | #include <linux/genhd.h> | |
37 | #include <linux/fs.h> | |
38 | #include <linux/init.h> | |
39 | #include <linux/proc_fs.h> | |
1da177e4 LT |
40 | #include <linux/vmalloc.h> |
41 | #include <linux/moduleparam.h> | |
852e034d | 42 | #include <linux/scatterlist.h> |
1da177e4 | 43 | #include <linux/blkdev.h> |
c6a44287 MP |
44 | #include <linux/crc-t10dif.h> |
45 | ||
46 | #include <net/checksum.h> | |
9ff26eef | 47 | |
44d92694 MP |
48 | #include <asm/unaligned.h> |
49 | ||
9ff26eef FT |
50 | #include <scsi/scsi.h> |
51 | #include <scsi/scsi_cmnd.h> | |
52 | #include <scsi/scsi_device.h> | |
1da177e4 LT |
53 | #include <scsi/scsi_host.h> |
54 | #include <scsi/scsicam.h> | |
a34c4e98 | 55 | #include <scsi/scsi_eh.h> |
395cef03 | 56 | #include <scsi/scsi_dbg.h> |
1da177e4 | 57 | |
c6a44287 | 58 | #include "sd.h" |
1da177e4 | 59 | #include "scsi_logging.h" |
1da177e4 | 60 | |
78d4e5a0 DG |
61 | #define SCSI_DEBUG_VERSION "1.82" |
62 | static const char * scsi_debug_version_date = "20100324"; | |
1da177e4 | 63 | |
6f3cbf55 | 64 | /* Additional Sense Code (ASC) */ |
c65b1445 DG |
65 | #define NO_ADDITIONAL_SENSE 0x0 |
66 | #define LOGICAL_UNIT_NOT_READY 0x4 | |
c5af0db9 | 67 | #define LOGICAL_UNIT_COMMUNICATION_FAILURE 0x8 |
1da177e4 | 68 | #define UNRECOVERED_READ_ERR 0x11 |
c65b1445 | 69 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
1da177e4 LT |
70 | #define INVALID_OPCODE 0x20 |
71 | #define ADDR_OUT_OF_RANGE 0x21 | |
395cef03 | 72 | #define INVALID_COMMAND_OPCODE 0x20 |
1da177e4 | 73 | #define INVALID_FIELD_IN_CDB 0x24 |
c65b1445 | 74 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
1da177e4 LT |
75 | #define POWERON_RESET 0x29 |
76 | #define SAVING_PARAMS_UNSUP 0x39 | |
6f3cbf55 | 77 | #define TRANSPORT_PROBLEM 0x4b |
c65b1445 DG |
78 | #define THRESHOLD_EXCEEDED 0x5d |
79 | #define LOW_POWER_COND_ON 0x5e | |
1da177e4 | 80 | |
6f3cbf55 DG |
81 | /* Additional Sense Code Qualifier (ASCQ) */ |
82 | #define ACK_NAK_TO 0x3 | |
83 | ||
1da177e4 LT |
84 | #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ |
85 | ||
86 | /* Default values for driver parameters */ | |
87 | #define DEF_NUM_HOST 1 | |
88 | #define DEF_NUM_TGTS 1 | |
89 | #define DEF_MAX_LUNS 1 | |
90 | /* With these defaults, this driver will make 1 host with 1 target | |
91 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. | |
92 | */ | |
5b94e232 | 93 | #define DEF_ATO 1 |
1da177e4 LT |
94 | #define DEF_DELAY 1 |
95 | #define DEF_DEV_SIZE_MB 8 | |
5b94e232 MP |
96 | #define DEF_DIF 0 |
97 | #define DEF_DIX 0 | |
1da177e4 | 98 | #define DEF_D_SENSE 0 |
5b94e232 | 99 | #define DEF_EVERY_NTH 0 |
23183910 | 100 | #define DEF_FAKE_RW 0 |
c6a44287 | 101 | #define DEF_GUARD 0 |
5b94e232 MP |
102 | #define DEF_LBPU 0 |
103 | #define DEF_LBPWS 0 | |
104 | #define DEF_LBPWS10 0 | |
be1dd78d | 105 | #define DEF_LBPRZ 1 |
ea61fca5 | 106 | #define DEF_LOWEST_ALIGNED 0 |
5b94e232 MP |
107 | #define DEF_NO_LUN_0 0 |
108 | #define DEF_NUM_PARTS 0 | |
109 | #define DEF_OPTS 0 | |
e308b3d1 | 110 | #define DEF_OPT_BLKS 64 |
5b94e232 MP |
111 | #define DEF_PHYSBLK_EXP 0 |
112 | #define DEF_PTYPE 0 | |
d986788b | 113 | #define DEF_REMOVABLE false |
5b94e232 MP |
114 | #define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ |
115 | #define DEF_SECTOR_SIZE 512 | |
116 | #define DEF_UNMAP_ALIGNMENT 0 | |
117 | #define DEF_UNMAP_GRANULARITY 1 | |
6014759c MP |
118 | #define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF |
119 | #define DEF_UNMAP_MAX_DESC 256 | |
5b94e232 MP |
120 | #define DEF_VIRTUAL_GB 0 |
121 | #define DEF_VPD_USE_HOSTNO 1 | |
122 | #define DEF_WRITESAME_LENGTH 0xFFFF | |
1da177e4 LT |
123 | |
124 | /* bit mask values for scsi_debug_opts */ | |
125 | #define SCSI_DEBUG_OPT_NOISE 1 | |
126 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 | |
127 | #define SCSI_DEBUG_OPT_TIMEOUT 4 | |
128 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 | |
6f3cbf55 | 129 | #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
c6a44287 MP |
130 | #define SCSI_DEBUG_OPT_DIF_ERR 32 |
131 | #define SCSI_DEBUG_OPT_DIX_ERR 64 | |
18a4d0a2 | 132 | #define SCSI_DEBUG_OPT_MAC_TIMEOUT 128 |
b57d7c01 | 133 | #define SCSI_DEBUG_OPT_SHORT_TRANSFER 256 |
1da177e4 LT |
134 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
135 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
136 | * - a RECOVERED_ERROR is simulated on successful read and write | |
137 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
138 | * - a TRANSPORT_ERROR is simulated on successful read and write |
139 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
140 | * |
141 | * When "every_nth" < 0 then after "- every_nth" commands: | |
142 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
143 | * - a RECOVERED_ERROR is simulated on successful read and write | |
144 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
145 | * - a TRANSPORT_ERROR is simulated on successful read and write |
146 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
147 | * This will continue until some other action occurs (e.g. the user |
148 | * writing a new value (other than -1 or 1) to every_nth via sysfs). | |
149 | */ | |
150 | ||
151 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this | |
152 | * sector on read commands: */ | |
153 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ | |
32f7ef73 | 154 | #define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */ |
1da177e4 LT |
155 | |
156 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) | |
157 | * or "peripheral device" addressing (value 0) */ | |
158 | #define SAM2_LUN_ADDRESS_METHOD 0 | |
c65b1445 | 159 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
1da177e4 | 160 | |
78d4e5a0 DG |
161 | /* Can queue up to this number of commands. Typically commands that |
162 | * that have a non-zero delay are queued. */ | |
163 | #define SCSI_DEBUG_CANQUEUE 255 | |
164 | ||
1da177e4 | 165 | static int scsi_debug_add_host = DEF_NUM_HOST; |
5b94e232 | 166 | static int scsi_debug_ato = DEF_ATO; |
1da177e4 LT |
167 | static int scsi_debug_delay = DEF_DELAY; |
168 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; | |
5b94e232 MP |
169 | static int scsi_debug_dif = DEF_DIF; |
170 | static int scsi_debug_dix = DEF_DIX; | |
171 | static int scsi_debug_dsense = DEF_D_SENSE; | |
1da177e4 | 172 | static int scsi_debug_every_nth = DEF_EVERY_NTH; |
5b94e232 | 173 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
68aee7ba | 174 | static unsigned int scsi_debug_guard = DEF_GUARD; |
5b94e232 | 175 | static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED; |
1da177e4 | 176 | static int scsi_debug_max_luns = DEF_MAX_LUNS; |
78d4e5a0 | 177 | static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE; |
5b94e232 | 178 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
78d4e5a0 | 179 | static int scsi_debug_no_uld = 0; |
5b94e232 | 180 | static int scsi_debug_num_parts = DEF_NUM_PARTS; |
1da177e4 | 181 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ |
5b94e232 | 182 | static int scsi_debug_opt_blks = DEF_OPT_BLKS; |
1da177e4 | 183 | static int scsi_debug_opts = DEF_OPTS; |
5b94e232 | 184 | static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP; |
1da177e4 | 185 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ |
5b94e232 MP |
186 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; |
187 | static int scsi_debug_sector_size = DEF_SECTOR_SIZE; | |
c65b1445 | 188 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; |
23183910 | 189 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; |
5b94e232 MP |
190 | static unsigned int scsi_debug_lbpu = DEF_LBPU; |
191 | static unsigned int scsi_debug_lbpws = DEF_LBPWS; | |
192 | static unsigned int scsi_debug_lbpws10 = DEF_LBPWS10; | |
be1dd78d | 193 | static unsigned int scsi_debug_lbprz = DEF_LBPRZ; |
6014759c | 194 | static unsigned int scsi_debug_unmap_alignment = DEF_UNMAP_ALIGNMENT; |
5b94e232 MP |
195 | static unsigned int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY; |
196 | static unsigned int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS; | |
197 | static unsigned int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC; | |
198 | static unsigned int scsi_debug_write_same_length = DEF_WRITESAME_LENGTH; | |
d986788b | 199 | static bool scsi_debug_removable = DEF_REMOVABLE; |
0759c666 | 200 | static bool scsi_debug_clustering; |
1da177e4 LT |
201 | |
202 | static int scsi_debug_cmnd_count = 0; | |
203 | ||
204 | #define DEV_READONLY(TGT) (0) | |
1da177e4 | 205 | |
c65b1445 | 206 | static unsigned int sdebug_store_sectors; |
1da177e4 LT |
207 | static sector_t sdebug_capacity; /* in sectors */ |
208 | ||
209 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages | |
210 | may still need them */ | |
211 | static int sdebug_heads; /* heads per disk */ | |
212 | static int sdebug_cylinders_per; /* cylinders per surface */ | |
213 | static int sdebug_sectors_per; /* sectors per cylinder */ | |
214 | ||
1da177e4 LT |
215 | #define SDEBUG_MAX_PARTS 4 |
216 | ||
217 | #define SDEBUG_SENSE_LEN 32 | |
218 | ||
395cef03 | 219 | #define SCSI_DEBUG_MAX_CMD_LEN 32 |
9e603ca0 | 220 | |
5b94e232 MP |
221 | static unsigned int scsi_debug_lbp(void) |
222 | { | |
223 | return scsi_debug_lbpu | scsi_debug_lbpws | scsi_debug_lbpws10; | |
224 | } | |
225 | ||
1da177e4 LT |
226 | struct sdebug_dev_info { |
227 | struct list_head dev_list; | |
228 | unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ | |
229 | unsigned int channel; | |
230 | unsigned int target; | |
231 | unsigned int lun; | |
232 | struct sdebug_host_info *sdbg_host; | |
c65b1445 | 233 | unsigned int wlun; |
1da177e4 | 234 | char reset; |
c65b1445 | 235 | char stopped; |
1da177e4 LT |
236 | char used; |
237 | }; | |
238 | ||
239 | struct sdebug_host_info { | |
240 | struct list_head host_list; | |
241 | struct Scsi_Host *shost; | |
242 | struct device dev; | |
243 | struct list_head dev_info_list; | |
244 | }; | |
245 | ||
246 | #define to_sdebug_host(d) \ | |
247 | container_of(d, struct sdebug_host_info, dev) | |
248 | ||
249 | static LIST_HEAD(sdebug_host_list); | |
250 | static DEFINE_SPINLOCK(sdebug_host_list_lock); | |
251 | ||
252 | typedef void (* done_funct_t) (struct scsi_cmnd *); | |
253 | ||
254 | struct sdebug_queued_cmd { | |
255 | int in_use; | |
256 | struct timer_list cmnd_timer; | |
257 | done_funct_t done_funct; | |
258 | struct scsi_cmnd * a_cmnd; | |
259 | int scsi_result; | |
260 | }; | |
261 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; | |
262 | ||
1da177e4 | 263 | static unsigned char * fake_storep; /* ramdisk storage */ |
e18d8bea | 264 | static struct sd_dif_tuple *dif_storep; /* protection info */ |
44d92694 | 265 | static void *map_storep; /* provisioning map */ |
1da177e4 | 266 | |
44d92694 | 267 | static unsigned long map_size; |
1da177e4 LT |
268 | static int num_aborts = 0; |
269 | static int num_dev_resets = 0; | |
270 | static int num_bus_resets = 0; | |
271 | static int num_host_resets = 0; | |
c6a44287 MP |
272 | static int dix_writes; |
273 | static int dix_reads; | |
274 | static int dif_errors; | |
1da177e4 LT |
275 | |
276 | static DEFINE_SPINLOCK(queued_arr_lock); | |
277 | static DEFINE_RWLOCK(atomic_rw); | |
278 | ||
279 | static char sdebug_proc_name[] = "scsi_debug"; | |
280 | ||
1da177e4 LT |
281 | static struct bus_type pseudo_lld_bus; |
282 | ||
283 | static struct device_driver sdebug_driverfs_driver = { | |
284 | .name = sdebug_proc_name, | |
285 | .bus = &pseudo_lld_bus, | |
1da177e4 LT |
286 | }; |
287 | ||
288 | static const int check_condition_result = | |
289 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | |
290 | ||
c6a44287 MP |
291 | static const int illegal_condition_result = |
292 | (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; | |
293 | ||
c65b1445 DG |
294 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
295 | 0, 0, 0x2, 0x4b}; | |
296 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
297 | 0, 0, 0x0, 0x0}; | |
298 | ||
14faa944 AM |
299 | static void *fake_store(unsigned long long lba) |
300 | { | |
301 | lba = do_div(lba, sdebug_store_sectors); | |
302 | ||
303 | return fake_storep + lba * scsi_debug_sector_size; | |
304 | } | |
305 | ||
306 | static struct sd_dif_tuple *dif_store(sector_t sector) | |
307 | { | |
308 | sector = do_div(sector, sdebug_store_sectors); | |
309 | ||
310 | return dif_storep + sector; | |
311 | } | |
312 | ||
1da177e4 LT |
313 | static int sdebug_add_adapter(void); |
314 | static void sdebug_remove_adapter(void); | |
1da177e4 | 315 | |
8dea0d02 FT |
316 | static void sdebug_max_tgts_luns(void) |
317 | { | |
318 | struct sdebug_host_info *sdbg_host; | |
319 | struct Scsi_Host *hpnt; | |
320 | ||
321 | spin_lock(&sdebug_host_list_lock); | |
322 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
323 | hpnt = sdbg_host->shost; | |
324 | if ((hpnt->this_id >= 0) && | |
325 | (scsi_debug_num_tgts > hpnt->this_id)) | |
326 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
327 | else | |
328 | hpnt->max_id = scsi_debug_num_tgts; | |
329 | /* scsi_debug_max_luns; */ | |
330 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; | |
331 | } | |
332 | spin_unlock(&sdebug_host_list_lock); | |
333 | } | |
334 | ||
335 | static void mk_sense_buffer(struct sdebug_dev_info *devip, int key, | |
336 | int asc, int asq) | |
337 | { | |
338 | unsigned char *sbuff; | |
339 | ||
340 | sbuff = devip->sense_buff; | |
341 | memset(sbuff, 0, SDEBUG_SENSE_LEN); | |
342 | ||
343 | scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); | |
344 | ||
345 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
346 | printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " | |
347 | "[0x%x,0x%x,0x%x]\n", key, asc, asq); | |
348 | } | |
1da177e4 | 349 | |
3de9f944 | 350 | static void get_data_transfer_info(unsigned char *cmd, |
395cef03 MP |
351 | unsigned long long *lba, unsigned int *num, |
352 | u32 *ei_lba) | |
3de9f944 | 353 | { |
395cef03 MP |
354 | *ei_lba = 0; |
355 | ||
3de9f944 | 356 | switch (*cmd) { |
395cef03 MP |
357 | case VARIABLE_LENGTH_CMD: |
358 | *lba = (u64)cmd[19] | (u64)cmd[18] << 8 | | |
359 | (u64)cmd[17] << 16 | (u64)cmd[16] << 24 | | |
360 | (u64)cmd[15] << 32 | (u64)cmd[14] << 40 | | |
361 | (u64)cmd[13] << 48 | (u64)cmd[12] << 56; | |
362 | ||
363 | *ei_lba = (u32)cmd[23] | (u32)cmd[22] << 8 | | |
364 | (u32)cmd[21] << 16 | (u32)cmd[20] << 24; | |
365 | ||
366 | *num = (u32)cmd[31] | (u32)cmd[30] << 8 | (u32)cmd[29] << 16 | | |
367 | (u32)cmd[28] << 24; | |
368 | break; | |
369 | ||
44d92694 | 370 | case WRITE_SAME_16: |
3de9f944 FT |
371 | case WRITE_16: |
372 | case READ_16: | |
d5cdc989 FT |
373 | *lba = (u64)cmd[9] | (u64)cmd[8] << 8 | |
374 | (u64)cmd[7] << 16 | (u64)cmd[6] << 24 | | |
375 | (u64)cmd[5] << 32 | (u64)cmd[4] << 40 | | |
376 | (u64)cmd[3] << 48 | (u64)cmd[2] << 56; | |
377 | ||
378 | *num = (u32)cmd[13] | (u32)cmd[12] << 8 | (u32)cmd[11] << 16 | | |
379 | (u32)cmd[10] << 24; | |
3de9f944 FT |
380 | break; |
381 | case WRITE_12: | |
382 | case READ_12: | |
d5cdc989 FT |
383 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
384 | (u32)cmd[2] << 24; | |
385 | ||
386 | *num = (u32)cmd[9] | (u32)cmd[8] << 8 | (u32)cmd[7] << 16 | | |
387 | (u32)cmd[6] << 24; | |
3de9f944 | 388 | break; |
44d92694 | 389 | case WRITE_SAME: |
3de9f944 FT |
390 | case WRITE_10: |
391 | case READ_10: | |
c639d14e | 392 | case XDWRITEREAD_10: |
d5cdc989 FT |
393 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
394 | (u32)cmd[2] << 24; | |
395 | ||
396 | *num = (u32)cmd[8] | (u32)cmd[7] << 8; | |
3de9f944 FT |
397 | break; |
398 | case WRITE_6: | |
399 | case READ_6: | |
d5cdc989 FT |
400 | *lba = (u32)cmd[3] | (u32)cmd[2] << 8 | |
401 | (u32)(cmd[1] & 0x1f) << 16; | |
3de9f944 FT |
402 | *num = (0 == cmd[4]) ? 256 : cmd[4]; |
403 | break; | |
404 | default: | |
405 | break; | |
406 | } | |
407 | } | |
1da177e4 | 408 | |
1da177e4 LT |
409 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
410 | { | |
411 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
412 | printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); | |
413 | } | |
414 | return -EINVAL; | |
415 | /* return -ENOTTY; // correct return but upsets fdisk */ | |
416 | } | |
417 | ||
c65b1445 DG |
418 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
419 | struct sdebug_dev_info * devip) | |
1da177e4 LT |
420 | { |
421 | if (devip->reset) { | |
422 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
423 | printk(KERN_INFO "scsi_debug: Reporting Unit " | |
424 | "attention: power on reset\n"); | |
425 | devip->reset = 0; | |
426 | mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); | |
427 | return check_condition_result; | |
428 | } | |
c65b1445 DG |
429 | if ((0 == reset_only) && devip->stopped) { |
430 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
431 | printk(KERN_INFO "scsi_debug: Reporting Not " | |
432 | "ready: initializing command required\n"); | |
433 | mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, | |
434 | 0x2); | |
435 | return check_condition_result; | |
436 | } | |
1da177e4 LT |
437 | return 0; |
438 | } | |
439 | ||
440 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ | |
21a61829 | 441 | static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
1da177e4 LT |
442 | int arr_len) |
443 | { | |
21a61829 | 444 | int act_len; |
072d0bb3 | 445 | struct scsi_data_buffer *sdb = scsi_in(scp); |
1da177e4 | 446 | |
072d0bb3 | 447 | if (!sdb->length) |
1da177e4 | 448 | return 0; |
072d0bb3 | 449 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
1da177e4 | 450 | return (DID_ERROR << 16); |
21a61829 FT |
451 | |
452 | act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, | |
453 | arr, arr_len); | |
a4517511 | 454 | sdb->resid = scsi_bufflen(scp) - act_len; |
21a61829 | 455 | |
1da177e4 LT |
456 | return 0; |
457 | } | |
458 | ||
459 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ | |
21a61829 FT |
460 | static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
461 | int arr_len) | |
1da177e4 | 462 | { |
21a61829 | 463 | if (!scsi_bufflen(scp)) |
1da177e4 | 464 | return 0; |
072d0bb3 | 465 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
1da177e4 | 466 | return -1; |
21a61829 FT |
467 | |
468 | return scsi_sg_copy_to_buffer(scp, arr, arr_len); | |
1da177e4 LT |
469 | } |
470 | ||
471 | ||
472 | static const char * inq_vendor_id = "Linux "; | |
473 | static const char * inq_product_id = "scsi_debug "; | |
474 | static const char * inq_product_rev = "0004"; | |
475 | ||
5a09e398 HR |
476 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
477 | int target_dev_id, int dev_id_num, | |
478 | const char * dev_id_str, | |
c65b1445 | 479 | int dev_id_str_len) |
1da177e4 | 480 | { |
c65b1445 DG |
481 | int num, port_a; |
482 | char b[32]; | |
1da177e4 | 483 | |
c65b1445 | 484 | port_a = target_dev_id + 1; |
1da177e4 LT |
485 | /* T10 vendor identifier field format (faked) */ |
486 | arr[0] = 0x2; /* ASCII */ | |
487 | arr[1] = 0x1; | |
488 | arr[2] = 0x0; | |
489 | memcpy(&arr[4], inq_vendor_id, 8); | |
490 | memcpy(&arr[12], inq_product_id, 16); | |
491 | memcpy(&arr[28], dev_id_str, dev_id_str_len); | |
492 | num = 8 + 16 + dev_id_str_len; | |
493 | arr[3] = num; | |
494 | num += 4; | |
c65b1445 DG |
495 | if (dev_id_num >= 0) { |
496 | /* NAA-5, Logical unit identifier (binary) */ | |
497 | arr[num++] = 0x1; /* binary (not necessarily sas) */ | |
498 | arr[num++] = 0x3; /* PIV=0, lu, naa */ | |
499 | arr[num++] = 0x0; | |
500 | arr[num++] = 0x8; | |
501 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ | |
502 | arr[num++] = 0x33; | |
503 | arr[num++] = 0x33; | |
504 | arr[num++] = 0x30; | |
505 | arr[num++] = (dev_id_num >> 24); | |
506 | arr[num++] = (dev_id_num >> 16) & 0xff; | |
507 | arr[num++] = (dev_id_num >> 8) & 0xff; | |
508 | arr[num++] = dev_id_num & 0xff; | |
509 | /* Target relative port number */ | |
510 | arr[num++] = 0x61; /* proto=sas, binary */ | |
511 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ | |
512 | arr[num++] = 0x0; /* reserved */ | |
513 | arr[num++] = 0x4; /* length */ | |
514 | arr[num++] = 0x0; /* reserved */ | |
515 | arr[num++] = 0x0; /* reserved */ | |
516 | arr[num++] = 0x0; | |
517 | arr[num++] = 0x1; /* relative port A */ | |
518 | } | |
519 | /* NAA-5, Target port identifier */ | |
520 | arr[num++] = 0x61; /* proto=sas, binary */ | |
521 | arr[num++] = 0x93; /* piv=1, target port, naa */ | |
522 | arr[num++] = 0x0; | |
523 | arr[num++] = 0x8; | |
524 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
525 | arr[num++] = 0x22; | |
526 | arr[num++] = 0x22; | |
527 | arr[num++] = 0x20; | |
528 | arr[num++] = (port_a >> 24); | |
529 | arr[num++] = (port_a >> 16) & 0xff; | |
530 | arr[num++] = (port_a >> 8) & 0xff; | |
531 | arr[num++] = port_a & 0xff; | |
5a09e398 HR |
532 | /* NAA-5, Target port group identifier */ |
533 | arr[num++] = 0x61; /* proto=sas, binary */ | |
534 | arr[num++] = 0x95; /* piv=1, target port group id */ | |
535 | arr[num++] = 0x0; | |
536 | arr[num++] = 0x4; | |
537 | arr[num++] = 0; | |
538 | arr[num++] = 0; | |
539 | arr[num++] = (port_group_id >> 8) & 0xff; | |
540 | arr[num++] = port_group_id & 0xff; | |
c65b1445 DG |
541 | /* NAA-5, Target device identifier */ |
542 | arr[num++] = 0x61; /* proto=sas, binary */ | |
543 | arr[num++] = 0xa3; /* piv=1, target device, naa */ | |
544 | arr[num++] = 0x0; | |
545 | arr[num++] = 0x8; | |
546 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
547 | arr[num++] = 0x22; | |
548 | arr[num++] = 0x22; | |
549 | arr[num++] = 0x20; | |
550 | arr[num++] = (target_dev_id >> 24); | |
551 | arr[num++] = (target_dev_id >> 16) & 0xff; | |
552 | arr[num++] = (target_dev_id >> 8) & 0xff; | |
553 | arr[num++] = target_dev_id & 0xff; | |
554 | /* SCSI name string: Target device identifier */ | |
555 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ | |
556 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ | |
557 | arr[num++] = 0x0; | |
558 | arr[num++] = 24; | |
559 | memcpy(arr + num, "naa.52222220", 12); | |
560 | num += 12; | |
561 | snprintf(b, sizeof(b), "%08X", target_dev_id); | |
562 | memcpy(arr + num, b, 8); | |
563 | num += 8; | |
564 | memset(arr + num, 0, 4); | |
565 | num += 4; | |
566 | return num; | |
567 | } | |
568 | ||
569 | ||
570 | static unsigned char vpd84_data[] = { | |
571 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, | |
572 | 0x22,0x22,0x22,0x0,0xbb,0x1, | |
573 | 0x22,0x22,0x22,0x0,0xbb,0x2, | |
574 | }; | |
575 | ||
576 | static int inquiry_evpd_84(unsigned char * arr) | |
577 | { | |
578 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); | |
579 | return sizeof(vpd84_data); | |
580 | } | |
581 | ||
582 | static int inquiry_evpd_85(unsigned char * arr) | |
583 | { | |
584 | int num = 0; | |
585 | const char * na1 = "https://www.kernel.org/config"; | |
586 | const char * na2 = "http://www.kernel.org/log"; | |
587 | int plen, olen; | |
588 | ||
589 | arr[num++] = 0x1; /* lu, storage config */ | |
590 | arr[num++] = 0x0; /* reserved */ | |
591 | arr[num++] = 0x0; | |
592 | olen = strlen(na1); | |
593 | plen = olen + 1; | |
594 | if (plen % 4) | |
595 | plen = ((plen / 4) + 1) * 4; | |
596 | arr[num++] = plen; /* length, null termianted, padded */ | |
597 | memcpy(arr + num, na1, olen); | |
598 | memset(arr + num + olen, 0, plen - olen); | |
599 | num += plen; | |
600 | ||
601 | arr[num++] = 0x4; /* lu, logging */ | |
602 | arr[num++] = 0x0; /* reserved */ | |
603 | arr[num++] = 0x0; | |
604 | olen = strlen(na2); | |
605 | plen = olen + 1; | |
606 | if (plen % 4) | |
607 | plen = ((plen / 4) + 1) * 4; | |
608 | arr[num++] = plen; /* length, null terminated, padded */ | |
609 | memcpy(arr + num, na2, olen); | |
610 | memset(arr + num + olen, 0, plen - olen); | |
611 | num += plen; | |
612 | ||
613 | return num; | |
614 | } | |
615 | ||
616 | /* SCSI ports VPD page */ | |
617 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) | |
618 | { | |
619 | int num = 0; | |
620 | int port_a, port_b; | |
621 | ||
622 | port_a = target_dev_id + 1; | |
623 | port_b = port_a + 1; | |
624 | arr[num++] = 0x0; /* reserved */ | |
625 | arr[num++] = 0x0; /* reserved */ | |
626 | arr[num++] = 0x0; | |
627 | arr[num++] = 0x1; /* relative port 1 (primary) */ | |
628 | memset(arr + num, 0, 6); | |
629 | num += 6; | |
630 | arr[num++] = 0x0; | |
631 | arr[num++] = 12; /* length tp descriptor */ | |
632 | /* naa-5 target port identifier (A) */ | |
633 | arr[num++] = 0x61; /* proto=sas, binary */ | |
634 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
635 | arr[num++] = 0x0; /* reserved */ | |
636 | arr[num++] = 0x8; /* length */ | |
637 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
638 | arr[num++] = 0x22; | |
639 | arr[num++] = 0x22; | |
640 | arr[num++] = 0x20; | |
641 | arr[num++] = (port_a >> 24); | |
642 | arr[num++] = (port_a >> 16) & 0xff; | |
643 | arr[num++] = (port_a >> 8) & 0xff; | |
644 | arr[num++] = port_a & 0xff; | |
645 | ||
646 | arr[num++] = 0x0; /* reserved */ | |
647 | arr[num++] = 0x0; /* reserved */ | |
648 | arr[num++] = 0x0; | |
649 | arr[num++] = 0x2; /* relative port 2 (secondary) */ | |
650 | memset(arr + num, 0, 6); | |
651 | num += 6; | |
652 | arr[num++] = 0x0; | |
653 | arr[num++] = 12; /* length tp descriptor */ | |
654 | /* naa-5 target port identifier (B) */ | |
655 | arr[num++] = 0x61; /* proto=sas, binary */ | |
656 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
657 | arr[num++] = 0x0; /* reserved */ | |
658 | arr[num++] = 0x8; /* length */ | |
659 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
660 | arr[num++] = 0x22; | |
661 | arr[num++] = 0x22; | |
662 | arr[num++] = 0x20; | |
663 | arr[num++] = (port_b >> 24); | |
664 | arr[num++] = (port_b >> 16) & 0xff; | |
665 | arr[num++] = (port_b >> 8) & 0xff; | |
666 | arr[num++] = port_b & 0xff; | |
667 | ||
668 | return num; | |
669 | } | |
670 | ||
671 | ||
672 | static unsigned char vpd89_data[] = { | |
673 | /* from 4th byte */ 0,0,0,0, | |
674 | 'l','i','n','u','x',' ',' ',' ', | |
675 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', | |
676 | '1','2','3','4', | |
677 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, | |
678 | 0xec,0,0,0, | |
679 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, | |
680 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, | |
681 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, | |
682 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, | |
683 | 0x53,0x41, | |
684 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
685 | 0x20,0x20, | |
686 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
687 | 0x10,0x80, | |
688 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, | |
689 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, | |
690 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, | |
691 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, | |
692 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, | |
693 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, | |
694 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, | |
695 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
696 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
697 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
698 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, | |
699 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, | |
700 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, | |
701 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, | |
702 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
703 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
704 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
705 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
706 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
707 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
708 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
709 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
710 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
711 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
712 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
713 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, | |
714 | }; | |
715 | ||
716 | static int inquiry_evpd_89(unsigned char * arr) | |
717 | { | |
718 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); | |
719 | return sizeof(vpd89_data); | |
720 | } | |
721 | ||
722 | ||
1e49f785 | 723 | /* Block limits VPD page (SBC-3) */ |
c65b1445 | 724 | static unsigned char vpdb0_data[] = { |
1e49f785 DG |
725 | /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64, |
726 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
727 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
728 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
c65b1445 DG |
729 | }; |
730 | ||
731 | static int inquiry_evpd_b0(unsigned char * arr) | |
732 | { | |
ea61fca5 MP |
733 | unsigned int gran; |
734 | ||
c65b1445 | 735 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
e308b3d1 MP |
736 | |
737 | /* Optimal transfer length granularity */ | |
ea61fca5 MP |
738 | gran = 1 << scsi_debug_physblk_exp; |
739 | arr[2] = (gran >> 8) & 0xff; | |
740 | arr[3] = gran & 0xff; | |
e308b3d1 MP |
741 | |
742 | /* Maximum Transfer Length */ | |
c65b1445 DG |
743 | if (sdebug_store_sectors > 0x400) { |
744 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; | |
745 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; | |
746 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; | |
747 | arr[7] = sdebug_store_sectors & 0xff; | |
748 | } | |
44d92694 | 749 | |
e308b3d1 MP |
750 | /* Optimal Transfer Length */ |
751 | put_unaligned_be32(scsi_debug_opt_blks, &arr[8]); | |
752 | ||
5b94e232 | 753 | if (scsi_debug_lbpu) { |
e308b3d1 | 754 | /* Maximum Unmap LBA Count */ |
6014759c | 755 | put_unaligned_be32(scsi_debug_unmap_max_blocks, &arr[16]); |
e308b3d1 MP |
756 | |
757 | /* Maximum Unmap Block Descriptor Count */ | |
44d92694 MP |
758 | put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]); |
759 | } | |
760 | ||
e308b3d1 | 761 | /* Unmap Granularity Alignment */ |
44d92694 MP |
762 | if (scsi_debug_unmap_alignment) { |
763 | put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]); | |
764 | arr[28] |= 0x80; /* UGAVALID */ | |
765 | } | |
766 | ||
e308b3d1 | 767 | /* Optimal Unmap Granularity */ |
6014759c MP |
768 | put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]); |
769 | ||
5b94e232 MP |
770 | /* Maximum WRITE SAME Length */ |
771 | put_unaligned_be64(scsi_debug_write_same_length, &arr[32]); | |
772 | ||
773 | return 0x3c; /* Mandatory page length for Logical Block Provisioning */ | |
44d92694 | 774 | |
c65b1445 | 775 | return sizeof(vpdb0_data); |
1da177e4 LT |
776 | } |
777 | ||
1e49f785 | 778 | /* Block device characteristics VPD page (SBC-3) */ |
eac6e8e4 MW |
779 | static int inquiry_evpd_b1(unsigned char *arr) |
780 | { | |
781 | memset(arr, 0, 0x3c); | |
782 | arr[0] = 0; | |
1e49f785 DG |
783 | arr[1] = 1; /* non rotating medium (e.g. solid state) */ |
784 | arr[2] = 0; | |
785 | arr[3] = 5; /* less than 1.8" */ | |
eac6e8e4 MW |
786 | |
787 | return 0x3c; | |
788 | } | |
1da177e4 | 789 | |
be1dd78d | 790 | /* Logical block provisioning VPD page (SBC-3) */ |
6014759c MP |
791 | static int inquiry_evpd_b2(unsigned char *arr) |
792 | { | |
3f0bc3b3 | 793 | memset(arr, 0, 0x4); |
6014759c MP |
794 | arr[0] = 0; /* threshold exponent */ |
795 | ||
5b94e232 | 796 | if (scsi_debug_lbpu) |
6014759c MP |
797 | arr[1] = 1 << 7; |
798 | ||
5b94e232 | 799 | if (scsi_debug_lbpws) |
6014759c MP |
800 | arr[1] |= 1 << 6; |
801 | ||
5b94e232 MP |
802 | if (scsi_debug_lbpws10) |
803 | arr[1] |= 1 << 5; | |
804 | ||
be1dd78d ES |
805 | if (scsi_debug_lbprz) |
806 | arr[1] |= 1 << 2; | |
807 | ||
3f0bc3b3 | 808 | return 0x4; |
6014759c MP |
809 | } |
810 | ||
1da177e4 | 811 | #define SDEBUG_LONG_INQ_SZ 96 |
c65b1445 | 812 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
1da177e4 LT |
813 | |
814 | static int resp_inquiry(struct scsi_cmnd * scp, int target, | |
815 | struct sdebug_dev_info * devip) | |
816 | { | |
817 | unsigned char pq_pdt; | |
5a09e398 | 818 | unsigned char * arr; |
1da177e4 | 819 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
5a09e398 | 820 | int alloc_len, n, ret; |
1da177e4 LT |
821 | |
822 | alloc_len = (cmd[3] << 8) + cmd[4]; | |
6f3cbf55 DG |
823 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
824 | if (! arr) | |
825 | return DID_REQUEUE << 16; | |
c65b1445 DG |
826 | if (devip->wlun) |
827 | pq_pdt = 0x1e; /* present, wlun */ | |
828 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) | |
829 | pq_pdt = 0x7f; /* not present, no device type */ | |
830 | else | |
831 | pq_pdt = (scsi_debug_ptype & 0x1f); | |
1da177e4 LT |
832 | arr[0] = pq_pdt; |
833 | if (0x2 & cmd[1]) { /* CMDDT bit set */ | |
834 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
835 | 0); | |
5a09e398 | 836 | kfree(arr); |
1da177e4 LT |
837 | return check_condition_result; |
838 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ | |
5a09e398 | 839 | int lu_id_num, port_group_id, target_dev_id, len; |
c65b1445 DG |
840 | char lu_id_str[6]; |
841 | int host_no = devip->sdbg_host->shost->host_no; | |
1da177e4 | 842 | |
5a09e398 HR |
843 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
844 | (devip->channel & 0x7f); | |
23183910 DG |
845 | if (0 == scsi_debug_vpd_use_hostno) |
846 | host_no = 0; | |
c65b1445 DG |
847 | lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
848 | (devip->target * 1000) + devip->lun); | |
849 | target_dev_id = ((host_no + 1) * 2000) + | |
850 | (devip->target * 1000) - 3; | |
851 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); | |
1da177e4 | 852 | if (0 == cmd[2]) { /* supported vital product data pages */ |
c65b1445 DG |
853 | arr[1] = cmd[2]; /*sanity */ |
854 | n = 4; | |
855 | arr[n++] = 0x0; /* this page */ | |
856 | arr[n++] = 0x80; /* unit serial number */ | |
857 | arr[n++] = 0x83; /* device identification */ | |
858 | arr[n++] = 0x84; /* software interface ident. */ | |
859 | arr[n++] = 0x85; /* management network addresses */ | |
860 | arr[n++] = 0x86; /* extended inquiry */ | |
861 | arr[n++] = 0x87; /* mode page policy */ | |
862 | arr[n++] = 0x88; /* SCSI ports */ | |
863 | arr[n++] = 0x89; /* ATA information */ | |
864 | arr[n++] = 0xb0; /* Block limits (SBC) */ | |
eac6e8e4 | 865 | arr[n++] = 0xb1; /* Block characteristics (SBC) */ |
5b94e232 MP |
866 | if (scsi_debug_lbp()) /* Logical Block Prov. (SBC) */ |
867 | arr[n++] = 0xb2; | |
c65b1445 | 868 | arr[3] = n - 4; /* number of supported VPD pages */ |
1da177e4 | 869 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
c65b1445 | 870 | arr[1] = cmd[2]; /*sanity */ |
1da177e4 | 871 | arr[3] = len; |
c65b1445 | 872 | memcpy(&arr[4], lu_id_str, len); |
1da177e4 | 873 | } else if (0x83 == cmd[2]) { /* device identification */ |
c65b1445 | 874 | arr[1] = cmd[2]; /*sanity */ |
5a09e398 HR |
875 | arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
876 | target_dev_id, lu_id_num, | |
877 | lu_id_str, len); | |
c65b1445 DG |
878 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
879 | arr[1] = cmd[2]; /*sanity */ | |
880 | arr[3] = inquiry_evpd_84(&arr[4]); | |
881 | } else if (0x85 == cmd[2]) { /* Management network addresses */ | |
882 | arr[1] = cmd[2]; /*sanity */ | |
883 | arr[3] = inquiry_evpd_85(&arr[4]); | |
884 | } else if (0x86 == cmd[2]) { /* extended inquiry */ | |
885 | arr[1] = cmd[2]; /*sanity */ | |
886 | arr[3] = 0x3c; /* number of following entries */ | |
c6a44287 MP |
887 | if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) |
888 | arr[4] = 0x4; /* SPT: GRD_CHK:1 */ | |
889 | else if (scsi_debug_dif) | |
890 | arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ | |
891 | else | |
892 | arr[4] = 0x0; /* no protection stuff */ | |
c65b1445 DG |
893 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
894 | } else if (0x87 == cmd[2]) { /* mode page policy */ | |
895 | arr[1] = cmd[2]; /*sanity */ | |
896 | arr[3] = 0x8; /* number of following entries */ | |
897 | arr[4] = 0x2; /* disconnect-reconnect mp */ | |
898 | arr[6] = 0x80; /* mlus, shared */ | |
899 | arr[8] = 0x18; /* protocol specific lu */ | |
900 | arr[10] = 0x82; /* mlus, per initiator port */ | |
901 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ | |
902 | arr[1] = cmd[2]; /*sanity */ | |
903 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); | |
904 | } else if (0x89 == cmd[2]) { /* ATA information */ | |
905 | arr[1] = cmd[2]; /*sanity */ | |
906 | n = inquiry_evpd_89(&arr[4]); | |
907 | arr[2] = (n >> 8); | |
908 | arr[3] = (n & 0xff); | |
909 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ | |
910 | arr[1] = cmd[2]; /*sanity */ | |
911 | arr[3] = inquiry_evpd_b0(&arr[4]); | |
eac6e8e4 MW |
912 | } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */ |
913 | arr[1] = cmd[2]; /*sanity */ | |
914 | arr[3] = inquiry_evpd_b1(&arr[4]); | |
5b94e232 | 915 | } else if (0xb2 == cmd[2]) { /* Logical Block Prov. (SBC) */ |
6014759c MP |
916 | arr[1] = cmd[2]; /*sanity */ |
917 | arr[3] = inquiry_evpd_b2(&arr[4]); | |
1da177e4 LT |
918 | } else { |
919 | /* Illegal request, invalid field in cdb */ | |
920 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
921 | INVALID_FIELD_IN_CDB, 0); | |
5a09e398 | 922 | kfree(arr); |
1da177e4 LT |
923 | return check_condition_result; |
924 | } | |
c65b1445 | 925 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
5a09e398 | 926 | ret = fill_from_dev_buffer(scp, arr, |
c65b1445 | 927 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
5a09e398 HR |
928 | kfree(arr); |
929 | return ret; | |
1da177e4 LT |
930 | } |
931 | /* drops through here for a standard inquiry */ | |
d986788b | 932 | arr[1] = scsi_debug_removable ? 0x80 : 0; /* Removable disk */ |
1da177e4 LT |
933 | arr[2] = scsi_debug_scsi_level; |
934 | arr[3] = 2; /* response_data_format==2 */ | |
935 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; | |
c6a44287 | 936 | arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */ |
5a09e398 HR |
937 | if (0 == scsi_debug_vpd_use_hostno) |
938 | arr[5] = 0x10; /* claim: implicit TGPS */ | |
c65b1445 | 939 | arr[6] = 0x10; /* claim: MultiP */ |
1da177e4 | 940 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
c65b1445 | 941 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
1da177e4 LT |
942 | memcpy(&arr[8], inq_vendor_id, 8); |
943 | memcpy(&arr[16], inq_product_id, 16); | |
944 | memcpy(&arr[32], inq_product_rev, 4); | |
945 | /* version descriptors (2 bytes each) follow */ | |
c65b1445 DG |
946 | arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ |
947 | arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ | |
948 | n = 62; | |
1da177e4 | 949 | if (scsi_debug_ptype == 0) { |
c65b1445 | 950 | arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ |
1da177e4 | 951 | } else if (scsi_debug_ptype == 1) { |
c65b1445 | 952 | arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ |
1da177e4 | 953 | } |
c65b1445 | 954 | arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ |
5a09e398 | 955 | ret = fill_from_dev_buffer(scp, arr, |
1da177e4 | 956 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
5a09e398 HR |
957 | kfree(arr); |
958 | return ret; | |
1da177e4 LT |
959 | } |
960 | ||
961 | static int resp_requests(struct scsi_cmnd * scp, | |
962 | struct sdebug_dev_info * devip) | |
963 | { | |
964 | unsigned char * sbuff; | |
965 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
966 | unsigned char arr[SDEBUG_SENSE_LEN]; | |
c65b1445 | 967 | int want_dsense; |
1da177e4 LT |
968 | int len = 18; |
969 | ||
c65b1445 | 970 | memset(arr, 0, sizeof(arr)); |
1da177e4 | 971 | if (devip->reset == 1) |
c65b1445 DG |
972 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
973 | want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; | |
1da177e4 | 974 | sbuff = devip->sense_buff; |
c65b1445 DG |
975 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
976 | if (want_dsense) { | |
977 | arr[0] = 0x72; | |
978 | arr[1] = 0x0; /* NO_SENSE in sense_key */ | |
979 | arr[2] = THRESHOLD_EXCEEDED; | |
980 | arr[3] = 0xff; /* TEST set and MRIE==6 */ | |
981 | } else { | |
982 | arr[0] = 0x70; | |
983 | arr[2] = 0x0; /* NO_SENSE in sense_key */ | |
984 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
985 | arr[12] = THRESHOLD_EXCEEDED; | |
986 | arr[13] = 0xff; /* TEST set and MRIE==6 */ | |
987 | } | |
c65b1445 | 988 | } else { |
1da177e4 | 989 | memcpy(arr, sbuff, SDEBUG_SENSE_LEN); |
c65b1445 DG |
990 | if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
991 | /* DESC bit set and sense_buff in fixed format */ | |
992 | memset(arr, 0, sizeof(arr)); | |
993 | arr[0] = 0x72; | |
994 | arr[1] = sbuff[2]; /* sense key */ | |
995 | arr[2] = sbuff[12]; /* asc */ | |
996 | arr[3] = sbuff[13]; /* ascq */ | |
997 | len = 8; | |
998 | } | |
999 | } | |
1000 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); | |
1da177e4 LT |
1001 | return fill_from_dev_buffer(scp, arr, len); |
1002 | } | |
1003 | ||
c65b1445 DG |
1004 | static int resp_start_stop(struct scsi_cmnd * scp, |
1005 | struct sdebug_dev_info * devip) | |
1006 | { | |
1007 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1008 | int power_cond, errsts, start; | |
1009 | ||
1010 | if ((errsts = check_readiness(scp, 1, devip))) | |
1011 | return errsts; | |
1012 | power_cond = (cmd[4] & 0xf0) >> 4; | |
1013 | if (power_cond) { | |
1014 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1015 | 0); | |
1016 | return check_condition_result; | |
1017 | } | |
1018 | start = cmd[4] & 1; | |
1019 | if (start == devip->stopped) | |
1020 | devip->stopped = !start; | |
1021 | return 0; | |
1022 | } | |
1023 | ||
28898873 FT |
1024 | static sector_t get_sdebug_capacity(void) |
1025 | { | |
1026 | if (scsi_debug_virtual_gb > 0) | |
5447ed6c DG |
1027 | return (sector_t)scsi_debug_virtual_gb * |
1028 | (1073741824 / scsi_debug_sector_size); | |
28898873 FT |
1029 | else |
1030 | return sdebug_store_sectors; | |
1031 | } | |
1032 | ||
1da177e4 LT |
1033 | #define SDEBUG_READCAP_ARR_SZ 8 |
1034 | static int resp_readcap(struct scsi_cmnd * scp, | |
1035 | struct sdebug_dev_info * devip) | |
1036 | { | |
1037 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; | |
c65b1445 | 1038 | unsigned int capac; |
1da177e4 LT |
1039 | int errsts; |
1040 | ||
c65b1445 | 1041 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 | 1042 | return errsts; |
c65b1445 | 1043 | /* following just in case virtual_gb changed */ |
28898873 | 1044 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 | 1045 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
c65b1445 DG |
1046 | if (sdebug_capacity < 0xffffffff) { |
1047 | capac = (unsigned int)sdebug_capacity - 1; | |
1048 | arr[0] = (capac >> 24); | |
1049 | arr[1] = (capac >> 16) & 0xff; | |
1050 | arr[2] = (capac >> 8) & 0xff; | |
1051 | arr[3] = capac & 0xff; | |
1052 | } else { | |
1053 | arr[0] = 0xff; | |
1054 | arr[1] = 0xff; | |
1055 | arr[2] = 0xff; | |
1056 | arr[3] = 0xff; | |
1057 | } | |
597136ab MP |
1058 | arr[6] = (scsi_debug_sector_size >> 8) & 0xff; |
1059 | arr[7] = scsi_debug_sector_size & 0xff; | |
1da177e4 LT |
1060 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
1061 | } | |
1062 | ||
c65b1445 DG |
1063 | #define SDEBUG_READCAP16_ARR_SZ 32 |
1064 | static int resp_readcap16(struct scsi_cmnd * scp, | |
1065 | struct sdebug_dev_info * devip) | |
1066 | { | |
1067 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1068 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; | |
1069 | unsigned long long capac; | |
1070 | int errsts, k, alloc_len; | |
1071 | ||
1072 | if ((errsts = check_readiness(scp, 1, devip))) | |
1073 | return errsts; | |
1074 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) | |
1075 | + cmd[13]); | |
1076 | /* following just in case virtual_gb changed */ | |
28898873 | 1077 | sdebug_capacity = get_sdebug_capacity(); |
c65b1445 DG |
1078 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
1079 | capac = sdebug_capacity - 1; | |
1080 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1081 | arr[7 - k] = capac & 0xff; | |
597136ab MP |
1082 | arr[8] = (scsi_debug_sector_size >> 24) & 0xff; |
1083 | arr[9] = (scsi_debug_sector_size >> 16) & 0xff; | |
1084 | arr[10] = (scsi_debug_sector_size >> 8) & 0xff; | |
1085 | arr[11] = scsi_debug_sector_size & 0xff; | |
ea61fca5 MP |
1086 | arr[13] = scsi_debug_physblk_exp & 0xf; |
1087 | arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f; | |
44d92694 | 1088 | |
be1dd78d | 1089 | if (scsi_debug_lbp()) { |
5b94e232 | 1090 | arr[14] |= 0x80; /* LBPME */ |
be1dd78d ES |
1091 | if (scsi_debug_lbprz) |
1092 | arr[14] |= 0x40; /* LBPRZ */ | |
1093 | } | |
44d92694 | 1094 | |
ea61fca5 | 1095 | arr[15] = scsi_debug_lowest_aligned & 0xff; |
c6a44287 MP |
1096 | |
1097 | if (scsi_debug_dif) { | |
1098 | arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */ | |
1099 | arr[12] |= 1; /* PROT_EN */ | |
1100 | } | |
1101 | ||
c65b1445 DG |
1102 | return fill_from_dev_buffer(scp, arr, |
1103 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); | |
1104 | } | |
1105 | ||
5a09e398 HR |
1106 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
1107 | ||
1108 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, | |
1109 | struct sdebug_dev_info * devip) | |
1110 | { | |
1111 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1112 | unsigned char * arr; | |
1113 | int host_no = devip->sdbg_host->shost->host_no; | |
1114 | int n, ret, alen, rlen; | |
1115 | int port_group_a, port_group_b, port_a, port_b; | |
1116 | ||
1117 | alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) | |
1118 | + cmd[9]); | |
1119 | ||
6f3cbf55 DG |
1120 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
1121 | if (! arr) | |
1122 | return DID_REQUEUE << 16; | |
5a09e398 HR |
1123 | /* |
1124 | * EVPD page 0x88 states we have two ports, one | |
1125 | * real and a fake port with no device connected. | |
1126 | * So we create two port groups with one port each | |
1127 | * and set the group with port B to unavailable. | |
1128 | */ | |
1129 | port_a = 0x1; /* relative port A */ | |
1130 | port_b = 0x2; /* relative port B */ | |
1131 | port_group_a = (((host_no + 1) & 0x7f) << 8) + | |
1132 | (devip->channel & 0x7f); | |
1133 | port_group_b = (((host_no + 1) & 0x7f) << 8) + | |
1134 | (devip->channel & 0x7f) + 0x80; | |
1135 | ||
1136 | /* | |
1137 | * The asymmetric access state is cycled according to the host_id. | |
1138 | */ | |
1139 | n = 4; | |
1140 | if (0 == scsi_debug_vpd_use_hostno) { | |
1141 | arr[n++] = host_no % 3; /* Asymm access state */ | |
1142 | arr[n++] = 0x0F; /* claim: all states are supported */ | |
1143 | } else { | |
1144 | arr[n++] = 0x0; /* Active/Optimized path */ | |
1145 | arr[n++] = 0x01; /* claim: only support active/optimized paths */ | |
1146 | } | |
1147 | arr[n++] = (port_group_a >> 8) & 0xff; | |
1148 | arr[n++] = port_group_a & 0xff; | |
1149 | arr[n++] = 0; /* Reserved */ | |
1150 | arr[n++] = 0; /* Status code */ | |
1151 | arr[n++] = 0; /* Vendor unique */ | |
1152 | arr[n++] = 0x1; /* One port per group */ | |
1153 | arr[n++] = 0; /* Reserved */ | |
1154 | arr[n++] = 0; /* Reserved */ | |
1155 | arr[n++] = (port_a >> 8) & 0xff; | |
1156 | arr[n++] = port_a & 0xff; | |
1157 | arr[n++] = 3; /* Port unavailable */ | |
1158 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ | |
1159 | arr[n++] = (port_group_b >> 8) & 0xff; | |
1160 | arr[n++] = port_group_b & 0xff; | |
1161 | arr[n++] = 0; /* Reserved */ | |
1162 | arr[n++] = 0; /* Status code */ | |
1163 | arr[n++] = 0; /* Vendor unique */ | |
1164 | arr[n++] = 0x1; /* One port per group */ | |
1165 | arr[n++] = 0; /* Reserved */ | |
1166 | arr[n++] = 0; /* Reserved */ | |
1167 | arr[n++] = (port_b >> 8) & 0xff; | |
1168 | arr[n++] = port_b & 0xff; | |
1169 | ||
1170 | rlen = n - 4; | |
1171 | arr[0] = (rlen >> 24) & 0xff; | |
1172 | arr[1] = (rlen >> 16) & 0xff; | |
1173 | arr[2] = (rlen >> 8) & 0xff; | |
1174 | arr[3] = rlen & 0xff; | |
1175 | ||
1176 | /* | |
1177 | * Return the smallest value of either | |
1178 | * - The allocated length | |
1179 | * - The constructed command length | |
1180 | * - The maximum array size | |
1181 | */ | |
1182 | rlen = min(alen,n); | |
1183 | ret = fill_from_dev_buffer(scp, arr, | |
1184 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); | |
1185 | kfree(arr); | |
1186 | return ret; | |
1187 | } | |
1188 | ||
1da177e4 LT |
1189 | /* <<Following mode page info copied from ST318451LW>> */ |
1190 | ||
1191 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) | |
1192 | { /* Read-Write Error Recovery page for mode_sense */ | |
1193 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, | |
1194 | 5, 0, 0xff, 0xff}; | |
1195 | ||
1196 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); | |
1197 | if (1 == pcontrol) | |
1198 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); | |
1199 | return sizeof(err_recov_pg); | |
1200 | } | |
1201 | ||
1202 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) | |
1203 | { /* Disconnect-Reconnect page for mode_sense */ | |
1204 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, | |
1205 | 0, 0, 0, 0, 0, 0, 0, 0}; | |
1206 | ||
1207 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); | |
1208 | if (1 == pcontrol) | |
1209 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); | |
1210 | return sizeof(disconnect_pg); | |
1211 | } | |
1212 | ||
1213 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) | |
1214 | { /* Format device page for mode_sense */ | |
597136ab MP |
1215 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
1216 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1217 | 0, 0, 0, 0, 0x40, 0, 0, 0}; | |
1218 | ||
1219 | memcpy(p, format_pg, sizeof(format_pg)); | |
1220 | p[10] = (sdebug_sectors_per >> 8) & 0xff; | |
1221 | p[11] = sdebug_sectors_per & 0xff; | |
1222 | p[12] = (scsi_debug_sector_size >> 8) & 0xff; | |
1223 | p[13] = scsi_debug_sector_size & 0xff; | |
d986788b | 1224 | if (scsi_debug_removable) |
597136ab MP |
1225 | p[20] |= 0x20; /* should agree with INQUIRY */ |
1226 | if (1 == pcontrol) | |
1227 | memset(p + 2, 0, sizeof(format_pg) - 2); | |
1228 | return sizeof(format_pg); | |
1da177e4 LT |
1229 | } |
1230 | ||
1231 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) | |
1232 | { /* Caching page for mode_sense */ | |
1233 | unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
1234 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; | |
1235 | ||
1236 | memcpy(p, caching_pg, sizeof(caching_pg)); | |
1237 | if (1 == pcontrol) | |
1238 | memset(p + 2, 0, sizeof(caching_pg) - 2); | |
1239 | return sizeof(caching_pg); | |
1240 | } | |
1241 | ||
1242 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) | |
1243 | { /* Control mode page for mode_sense */ | |
c65b1445 DG |
1244 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
1245 | 0, 0, 0, 0}; | |
1246 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, | |
1da177e4 LT |
1247 | 0, 0, 0x2, 0x4b}; |
1248 | ||
1249 | if (scsi_debug_dsense) | |
1250 | ctrl_m_pg[2] |= 0x4; | |
c65b1445 DG |
1251 | else |
1252 | ctrl_m_pg[2] &= ~0x4; | |
c6a44287 MP |
1253 | |
1254 | if (scsi_debug_ato) | |
1255 | ctrl_m_pg[5] |= 0x80; /* ATO=1 */ | |
1256 | ||
1da177e4 LT |
1257 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
1258 | if (1 == pcontrol) | |
c65b1445 DG |
1259 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
1260 | else if (2 == pcontrol) | |
1261 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); | |
1da177e4 LT |
1262 | return sizeof(ctrl_m_pg); |
1263 | } | |
1264 | ||
c65b1445 | 1265 | |
1da177e4 LT |
1266 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
1267 | { /* Informational Exceptions control mode page for mode_sense */ | |
c65b1445 DG |
1268 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
1269 | 0, 0, 0x0, 0x0}; | |
1270 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
1271 | 0, 0, 0x0, 0x0}; | |
1272 | ||
1da177e4 LT |
1273 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
1274 | if (1 == pcontrol) | |
c65b1445 DG |
1275 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
1276 | else if (2 == pcontrol) | |
1277 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); | |
1da177e4 LT |
1278 | return sizeof(iec_m_pg); |
1279 | } | |
1280 | ||
c65b1445 DG |
1281 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
1282 | { /* SAS SSP mode page - short format for mode_sense */ | |
1283 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, | |
1284 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; | |
1285 | ||
1286 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); | |
1287 | if (1 == pcontrol) | |
1288 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); | |
1289 | return sizeof(sas_sf_m_pg); | |
1290 | } | |
1291 | ||
1292 | ||
1293 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, | |
1294 | int target_dev_id) | |
1295 | { /* SAS phy control and discover mode page for mode_sense */ | |
1296 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, | |
1297 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1298 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1299 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1300 | 0x2, 0, 0, 0, 0, 0, 0, 0, | |
1301 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1302 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1303 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1304 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1305 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1306 | 0x3, 0, 0, 0, 0, 0, 0, 0, | |
1307 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1308 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1309 | }; | |
1310 | int port_a, port_b; | |
1311 | ||
1312 | port_a = target_dev_id + 1; | |
1313 | port_b = port_a + 1; | |
1314 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); | |
1315 | p[20] = (port_a >> 24); | |
1316 | p[21] = (port_a >> 16) & 0xff; | |
1317 | p[22] = (port_a >> 8) & 0xff; | |
1318 | p[23] = port_a & 0xff; | |
1319 | p[48 + 20] = (port_b >> 24); | |
1320 | p[48 + 21] = (port_b >> 16) & 0xff; | |
1321 | p[48 + 22] = (port_b >> 8) & 0xff; | |
1322 | p[48 + 23] = port_b & 0xff; | |
1323 | if (1 == pcontrol) | |
1324 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); | |
1325 | return sizeof(sas_pcd_m_pg); | |
1326 | } | |
1327 | ||
1328 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) | |
1329 | { /* SAS SSP shared protocol specific port mode subpage */ | |
1330 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, | |
1331 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1332 | }; | |
1333 | ||
1334 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); | |
1335 | if (1 == pcontrol) | |
1336 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); | |
1337 | return sizeof(sas_sha_m_pg); | |
1338 | } | |
1339 | ||
1da177e4 LT |
1340 | #define SDEBUG_MAX_MSENSE_SZ 256 |
1341 | ||
1342 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, | |
1343 | struct sdebug_dev_info * devip) | |
1344 | { | |
23183910 DG |
1345 | unsigned char dbd, llbaa; |
1346 | int pcontrol, pcode, subpcode, bd_len; | |
1da177e4 | 1347 | unsigned char dev_spec; |
23183910 | 1348 | int k, alloc_len, msense_6, offset, len, errsts, target_dev_id; |
1da177e4 LT |
1349 | unsigned char * ap; |
1350 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; | |
1351 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1352 | ||
c65b1445 | 1353 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 | 1354 | return errsts; |
23183910 | 1355 | dbd = !!(cmd[1] & 0x8); |
1da177e4 LT |
1356 | pcontrol = (cmd[2] & 0xc0) >> 6; |
1357 | pcode = cmd[2] & 0x3f; | |
1358 | subpcode = cmd[3]; | |
1359 | msense_6 = (MODE_SENSE == cmd[0]); | |
23183910 DG |
1360 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
1361 | if ((0 == scsi_debug_ptype) && (0 == dbd)) | |
1362 | bd_len = llbaa ? 16 : 8; | |
1363 | else | |
1364 | bd_len = 0; | |
1da177e4 LT |
1365 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
1366 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); | |
1367 | if (0x3 == pcontrol) { /* Saving values not supported */ | |
1368 | mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, | |
1369 | 0); | |
1370 | return check_condition_result; | |
1371 | } | |
c65b1445 DG |
1372 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
1373 | (devip->target * 1000) - 3; | |
23183910 DG |
1374 | /* set DPOFUA bit for disks */ |
1375 | if (0 == scsi_debug_ptype) | |
1376 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; | |
1377 | else | |
1378 | dev_spec = 0x0; | |
1da177e4 LT |
1379 | if (msense_6) { |
1380 | arr[2] = dev_spec; | |
23183910 | 1381 | arr[3] = bd_len; |
1da177e4 LT |
1382 | offset = 4; |
1383 | } else { | |
1384 | arr[3] = dev_spec; | |
23183910 DG |
1385 | if (16 == bd_len) |
1386 | arr[4] = 0x1; /* set LONGLBA bit */ | |
1387 | arr[7] = bd_len; /* assume 255 or less */ | |
1da177e4 LT |
1388 | offset = 8; |
1389 | } | |
1390 | ap = arr + offset; | |
28898873 FT |
1391 | if ((bd_len > 0) && (!sdebug_capacity)) |
1392 | sdebug_capacity = get_sdebug_capacity(); | |
1393 | ||
23183910 DG |
1394 | if (8 == bd_len) { |
1395 | if (sdebug_capacity > 0xfffffffe) { | |
1396 | ap[0] = 0xff; | |
1397 | ap[1] = 0xff; | |
1398 | ap[2] = 0xff; | |
1399 | ap[3] = 0xff; | |
1400 | } else { | |
1401 | ap[0] = (sdebug_capacity >> 24) & 0xff; | |
1402 | ap[1] = (sdebug_capacity >> 16) & 0xff; | |
1403 | ap[2] = (sdebug_capacity >> 8) & 0xff; | |
1404 | ap[3] = sdebug_capacity & 0xff; | |
1405 | } | |
597136ab MP |
1406 | ap[6] = (scsi_debug_sector_size >> 8) & 0xff; |
1407 | ap[7] = scsi_debug_sector_size & 0xff; | |
23183910 DG |
1408 | offset += bd_len; |
1409 | ap = arr + offset; | |
1410 | } else if (16 == bd_len) { | |
1411 | unsigned long long capac = sdebug_capacity; | |
1412 | ||
1413 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1414 | ap[7 - k] = capac & 0xff; | |
597136ab MP |
1415 | ap[12] = (scsi_debug_sector_size >> 24) & 0xff; |
1416 | ap[13] = (scsi_debug_sector_size >> 16) & 0xff; | |
1417 | ap[14] = (scsi_debug_sector_size >> 8) & 0xff; | |
1418 | ap[15] = scsi_debug_sector_size & 0xff; | |
23183910 DG |
1419 | offset += bd_len; |
1420 | ap = arr + offset; | |
1421 | } | |
1da177e4 | 1422 | |
c65b1445 DG |
1423 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
1424 | /* TODO: Control Extension page */ | |
1da177e4 LT |
1425 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1426 | 0); | |
1427 | return check_condition_result; | |
1428 | } | |
1429 | switch (pcode) { | |
1430 | case 0x1: /* Read-Write error recovery page, direct access */ | |
1431 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1432 | offset += len; | |
1433 | break; | |
1434 | case 0x2: /* Disconnect-Reconnect page, all devices */ | |
1435 | len = resp_disconnect_pg(ap, pcontrol, target); | |
1436 | offset += len; | |
1437 | break; | |
1438 | case 0x3: /* Format device page, direct access */ | |
1439 | len = resp_format_pg(ap, pcontrol, target); | |
1440 | offset += len; | |
1441 | break; | |
1442 | case 0x8: /* Caching page, direct access */ | |
1443 | len = resp_caching_pg(ap, pcontrol, target); | |
1444 | offset += len; | |
1445 | break; | |
1446 | case 0xa: /* Control Mode page, all devices */ | |
1447 | len = resp_ctrl_m_pg(ap, pcontrol, target); | |
1448 | offset += len; | |
1449 | break; | |
c65b1445 DG |
1450 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
1451 | if ((subpcode > 0x2) && (subpcode < 0xff)) { | |
1452 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1453 | INVALID_FIELD_IN_CDB, 0); | |
1454 | return check_condition_result; | |
1455 | } | |
1456 | len = 0; | |
1457 | if ((0x0 == subpcode) || (0xff == subpcode)) | |
1458 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1459 | if ((0x1 == subpcode) || (0xff == subpcode)) | |
1460 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, | |
1461 | target_dev_id); | |
1462 | if ((0x2 == subpcode) || (0xff == subpcode)) | |
1463 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1464 | offset += len; | |
1465 | break; | |
1da177e4 LT |
1466 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
1467 | len = resp_iec_m_pg(ap, pcontrol, target); | |
1468 | offset += len; | |
1469 | break; | |
1470 | case 0x3f: /* Read all Mode pages */ | |
c65b1445 DG |
1471 | if ((0 == subpcode) || (0xff == subpcode)) { |
1472 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1473 | len += resp_disconnect_pg(ap + len, pcontrol, target); | |
1474 | len += resp_format_pg(ap + len, pcontrol, target); | |
1475 | len += resp_caching_pg(ap + len, pcontrol, target); | |
1476 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); | |
1477 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1478 | if (0xff == subpcode) { | |
1479 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, | |
1480 | target, target_dev_id); | |
1481 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1482 | } | |
1483 | len += resp_iec_m_pg(ap + len, pcontrol, target); | |
1484 | } else { | |
1485 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1486 | INVALID_FIELD_IN_CDB, 0); | |
1487 | return check_condition_result; | |
1488 | } | |
1da177e4 LT |
1489 | offset += len; |
1490 | break; | |
1491 | default: | |
1492 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1493 | 0); | |
1494 | return check_condition_result; | |
1495 | } | |
1496 | if (msense_6) | |
1497 | arr[0] = offset - 1; | |
1498 | else { | |
1499 | arr[0] = ((offset - 2) >> 8) & 0xff; | |
1500 | arr[1] = (offset - 2) & 0xff; | |
1501 | } | |
1502 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); | |
1503 | } | |
1504 | ||
c65b1445 DG |
1505 | #define SDEBUG_MAX_MSELECT_SZ 512 |
1506 | ||
1507 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, | |
1508 | struct sdebug_dev_info * devip) | |
1509 | { | |
1510 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; | |
1511 | int param_len, res, errsts, mpage; | |
1512 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; | |
1513 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1514 | ||
1515 | if ((errsts = check_readiness(scp, 1, devip))) | |
1516 | return errsts; | |
1517 | memset(arr, 0, sizeof(arr)); | |
1518 | pf = cmd[1] & 0x10; | |
1519 | sp = cmd[1] & 0x1; | |
1520 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); | |
1521 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { | |
1522 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1523 | INVALID_FIELD_IN_CDB, 0); | |
1524 | return check_condition_result; | |
1525 | } | |
1526 | res = fetch_to_dev_buffer(scp, arr, param_len); | |
1527 | if (-1 == res) | |
1528 | return (DID_ERROR << 16); | |
1529 | else if ((res < param_len) && | |
1530 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
1531 | printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " | |
1532 | " IO sent=%d bytes\n", param_len, res); | |
1533 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); | |
1534 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); | |
23183910 | 1535 | if (md_len > 2) { |
c65b1445 DG |
1536 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
1537 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1538 | return check_condition_result; | |
1539 | } | |
1540 | off = bd_len + (mselect6 ? 4 : 8); | |
1541 | mpage = arr[off] & 0x3f; | |
1542 | ps = !!(arr[off] & 0x80); | |
1543 | if (ps) { | |
1544 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1545 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1546 | return check_condition_result; | |
1547 | } | |
1548 | spf = !!(arr[off] & 0x40); | |
1549 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : | |
1550 | (arr[off + 1] + 2); | |
1551 | if ((pg_len + off) > param_len) { | |
1552 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1553 | PARAMETER_LIST_LENGTH_ERR, 0); | |
1554 | return check_condition_result; | |
1555 | } | |
1556 | switch (mpage) { | |
1557 | case 0xa: /* Control Mode page */ | |
1558 | if (ctrl_m_pg[1] == arr[off + 1]) { | |
1559 | memcpy(ctrl_m_pg + 2, arr + off + 2, | |
1560 | sizeof(ctrl_m_pg) - 2); | |
1561 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); | |
1562 | return 0; | |
1563 | } | |
1564 | break; | |
1565 | case 0x1c: /* Informational Exceptions Mode page */ | |
1566 | if (iec_m_pg[1] == arr[off + 1]) { | |
1567 | memcpy(iec_m_pg + 2, arr + off + 2, | |
1568 | sizeof(iec_m_pg) - 2); | |
1569 | return 0; | |
1570 | } | |
1571 | break; | |
1572 | default: | |
1573 | break; | |
1574 | } | |
1575 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1576 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1577 | return check_condition_result; | |
1578 | } | |
1579 | ||
1580 | static int resp_temp_l_pg(unsigned char * arr) | |
1581 | { | |
1582 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, | |
1583 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, | |
1584 | }; | |
1585 | ||
1586 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); | |
1587 | return sizeof(temp_l_pg); | |
1588 | } | |
1589 | ||
1590 | static int resp_ie_l_pg(unsigned char * arr) | |
1591 | { | |
1592 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, | |
1593 | }; | |
1594 | ||
1595 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); | |
1596 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ | |
1597 | arr[4] = THRESHOLD_EXCEEDED; | |
1598 | arr[5] = 0xff; | |
1599 | } | |
1600 | return sizeof(ie_l_pg); | |
1601 | } | |
1602 | ||
1603 | #define SDEBUG_MAX_LSENSE_SZ 512 | |
1604 | ||
1605 | static int resp_log_sense(struct scsi_cmnd * scp, | |
1606 | struct sdebug_dev_info * devip) | |
1607 | { | |
23183910 | 1608 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n; |
c65b1445 DG |
1609 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
1610 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1611 | ||
1612 | if ((errsts = check_readiness(scp, 1, devip))) | |
1613 | return errsts; | |
1614 | memset(arr, 0, sizeof(arr)); | |
1615 | ppc = cmd[1] & 0x2; | |
1616 | sp = cmd[1] & 0x1; | |
1617 | if (ppc || sp) { | |
1618 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1619 | INVALID_FIELD_IN_CDB, 0); | |
1620 | return check_condition_result; | |
1621 | } | |
1622 | pcontrol = (cmd[2] & 0xc0) >> 6; | |
1623 | pcode = cmd[2] & 0x3f; | |
23183910 | 1624 | subpcode = cmd[3] & 0xff; |
c65b1445 DG |
1625 | alloc_len = (cmd[7] << 8) + cmd[8]; |
1626 | arr[0] = pcode; | |
23183910 DG |
1627 | if (0 == subpcode) { |
1628 | switch (pcode) { | |
1629 | case 0x0: /* Supported log pages log page */ | |
1630 | n = 4; | |
1631 | arr[n++] = 0x0; /* this page */ | |
1632 | arr[n++] = 0xd; /* Temperature */ | |
1633 | arr[n++] = 0x2f; /* Informational exceptions */ | |
1634 | arr[3] = n - 4; | |
1635 | break; | |
1636 | case 0xd: /* Temperature log page */ | |
1637 | arr[3] = resp_temp_l_pg(arr + 4); | |
1638 | break; | |
1639 | case 0x2f: /* Informational exceptions log page */ | |
1640 | arr[3] = resp_ie_l_pg(arr + 4); | |
1641 | break; | |
1642 | default: | |
1643 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1644 | INVALID_FIELD_IN_CDB, 0); | |
1645 | return check_condition_result; | |
1646 | } | |
1647 | } else if (0xff == subpcode) { | |
1648 | arr[0] |= 0x40; | |
1649 | arr[1] = subpcode; | |
1650 | switch (pcode) { | |
1651 | case 0x0: /* Supported log pages and subpages log page */ | |
1652 | n = 4; | |
1653 | arr[n++] = 0x0; | |
1654 | arr[n++] = 0x0; /* 0,0 page */ | |
1655 | arr[n++] = 0x0; | |
1656 | arr[n++] = 0xff; /* this page */ | |
1657 | arr[n++] = 0xd; | |
1658 | arr[n++] = 0x0; /* Temperature */ | |
1659 | arr[n++] = 0x2f; | |
1660 | arr[n++] = 0x0; /* Informational exceptions */ | |
1661 | arr[3] = n - 4; | |
1662 | break; | |
1663 | case 0xd: /* Temperature subpages */ | |
1664 | n = 4; | |
1665 | arr[n++] = 0xd; | |
1666 | arr[n++] = 0x0; /* Temperature */ | |
1667 | arr[3] = n - 4; | |
1668 | break; | |
1669 | case 0x2f: /* Informational exceptions subpages */ | |
1670 | n = 4; | |
1671 | arr[n++] = 0x2f; | |
1672 | arr[n++] = 0x0; /* Informational exceptions */ | |
1673 | arr[3] = n - 4; | |
1674 | break; | |
1675 | default: | |
1676 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1677 | INVALID_FIELD_IN_CDB, 0); | |
1678 | return check_condition_result; | |
1679 | } | |
1680 | } else { | |
c65b1445 DG |
1681 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
1682 | INVALID_FIELD_IN_CDB, 0); | |
1683 | return check_condition_result; | |
1684 | } | |
1685 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); | |
1686 | return fill_from_dev_buffer(scp, arr, | |
1687 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); | |
1688 | } | |
1689 | ||
19789100 FT |
1690 | static int check_device_access_params(struct sdebug_dev_info *devi, |
1691 | unsigned long long lba, unsigned int num) | |
1da177e4 | 1692 | { |
c65b1445 | 1693 | if (lba + num > sdebug_capacity) { |
19789100 | 1694 | mk_sense_buffer(devi, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, 0); |
1da177e4 LT |
1695 | return check_condition_result; |
1696 | } | |
c65b1445 DG |
1697 | /* transfer length excessive (tie in to block limits VPD page) */ |
1698 | if (num > sdebug_store_sectors) { | |
19789100 | 1699 | mk_sense_buffer(devi, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
c65b1445 DG |
1700 | return check_condition_result; |
1701 | } | |
19789100 FT |
1702 | return 0; |
1703 | } | |
1704 | ||
a4517511 | 1705 | /* Returns number of bytes copied or -1 if error. */ |
19789100 FT |
1706 | static int do_device_access(struct scsi_cmnd *scmd, |
1707 | struct sdebug_dev_info *devi, | |
1708 | unsigned long long lba, unsigned int num, int write) | |
1709 | { | |
1710 | int ret; | |
a361cc00 | 1711 | unsigned long long block, rest = 0; |
a4517511 AM |
1712 | struct scsi_data_buffer *sdb; |
1713 | enum dma_data_direction dir; | |
1714 | size_t (*func)(struct scatterlist *, unsigned int, void *, size_t, | |
1715 | off_t); | |
1716 | ||
1717 | if (write) { | |
1718 | sdb = scsi_out(scmd); | |
1719 | dir = DMA_TO_DEVICE; | |
1720 | func = sg_pcopy_to_buffer; | |
1721 | } else { | |
1722 | sdb = scsi_in(scmd); | |
1723 | dir = DMA_FROM_DEVICE; | |
1724 | func = sg_pcopy_from_buffer; | |
1725 | } | |
19789100 | 1726 | |
a4517511 AM |
1727 | if (!sdb->length) |
1728 | return 0; | |
1729 | if (!(scsi_bidi_cmnd(scmd) || scmd->sc_data_direction == dir)) | |
1730 | return -1; | |
19789100 FT |
1731 | |
1732 | block = do_div(lba, sdebug_store_sectors); | |
1733 | if (block + num > sdebug_store_sectors) | |
1734 | rest = block + num - sdebug_store_sectors; | |
1735 | ||
a4517511 AM |
1736 | ret = func(sdb->table.sgl, sdb->table.nents, |
1737 | fake_storep + (block * scsi_debug_sector_size), | |
1738 | (num - rest) * scsi_debug_sector_size, 0); | |
1739 | if (ret != (num - rest) * scsi_debug_sector_size) | |
1740 | return ret; | |
1741 | ||
1742 | if (rest) { | |
1743 | ret += func(sdb->table.sgl, sdb->table.nents, | |
1744 | fake_storep, rest * scsi_debug_sector_size, | |
1745 | (num - rest) * scsi_debug_sector_size); | |
1746 | } | |
19789100 FT |
1747 | |
1748 | return ret; | |
1749 | } | |
1750 | ||
51d648af | 1751 | static __be16 dif_compute_csum(const void *buf, int len) |
beb40ea4 | 1752 | { |
51d648af | 1753 | __be16 csum; |
beb40ea4 | 1754 | |
51d648af AM |
1755 | if (scsi_debug_guard) |
1756 | csum = (__force __be16)ip_compute_csum(buf, len); | |
1757 | else | |
beb40ea4 | 1758 | csum = cpu_to_be16(crc_t10dif(buf, len)); |
51d648af | 1759 | |
beb40ea4 AM |
1760 | return csum; |
1761 | } | |
1762 | ||
1763 | static int dif_verify(struct sd_dif_tuple *sdt, const void *data, | |
1764 | sector_t sector, u32 ei_lba) | |
1765 | { | |
51d648af | 1766 | __be16 csum = dif_compute_csum(data, scsi_debug_sector_size); |
beb40ea4 AM |
1767 | |
1768 | if (sdt->guard_tag != csum) { | |
1769 | pr_err("%s: GUARD check failed on sector %lu rcvd 0x%04x, data 0x%04x\n", | |
1770 | __func__, | |
1771 | (unsigned long)sector, | |
1772 | be16_to_cpu(sdt->guard_tag), | |
1773 | be16_to_cpu(csum)); | |
1774 | return 0x01; | |
1775 | } | |
1776 | if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION && | |
1777 | be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) { | |
1778 | pr_err("%s: REF check failed on sector %lu\n", | |
1779 | __func__, (unsigned long)sector); | |
1780 | return 0x03; | |
1781 | } | |
1782 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
1783 | be32_to_cpu(sdt->ref_tag) != ei_lba) { | |
1784 | pr_err("%s: REF check failed on sector %lu\n", | |
1785 | __func__, (unsigned long)sector); | |
beb40ea4 AM |
1786 | return 0x03; |
1787 | } | |
1788 | return 0; | |
1789 | } | |
1790 | ||
bb8c063c | 1791 | static void dif_copy_prot(struct scsi_cmnd *SCpnt, sector_t sector, |
65f72f2a | 1792 | unsigned int sectors, bool read) |
c6a44287 | 1793 | { |
be4e11be | 1794 | size_t resid; |
c6a44287 | 1795 | void *paddr; |
14faa944 | 1796 | const void *dif_store_end = dif_storep + sdebug_store_sectors; |
be4e11be | 1797 | struct sg_mapping_iter miter; |
c6a44287 | 1798 | |
e18d8bea AM |
1799 | /* Bytes of protection data to copy into sgl */ |
1800 | resid = sectors * sizeof(*dif_storep); | |
c6a44287 | 1801 | |
be4e11be AM |
1802 | sg_miter_start(&miter, scsi_prot_sglist(SCpnt), |
1803 | scsi_prot_sg_count(SCpnt), SG_MITER_ATOMIC | | |
1804 | (read ? SG_MITER_TO_SG : SG_MITER_FROM_SG)); | |
1805 | ||
1806 | while (sg_miter_next(&miter) && resid > 0) { | |
1807 | size_t len = min(miter.length, resid); | |
14faa944 | 1808 | void *start = dif_store(sector); |
be4e11be | 1809 | size_t rest = 0; |
14faa944 AM |
1810 | |
1811 | if (dif_store_end < start + len) | |
1812 | rest = start + len - dif_store_end; | |
c6a44287 | 1813 | |
be4e11be | 1814 | paddr = miter.addr; |
14faa944 | 1815 | |
65f72f2a AM |
1816 | if (read) |
1817 | memcpy(paddr, start, len - rest); | |
1818 | else | |
1819 | memcpy(start, paddr, len - rest); | |
1820 | ||
1821 | if (rest) { | |
1822 | if (read) | |
1823 | memcpy(paddr + len - rest, dif_storep, rest); | |
1824 | else | |
1825 | memcpy(dif_storep, paddr + len - rest, rest); | |
1826 | } | |
c6a44287 | 1827 | |
e18d8bea | 1828 | sector += len / sizeof(*dif_storep); |
c6a44287 | 1829 | resid -= len; |
c6a44287 | 1830 | } |
be4e11be | 1831 | sg_miter_stop(&miter); |
bb8c063c AM |
1832 | } |
1833 | ||
1834 | static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, | |
1835 | unsigned int sectors, u32 ei_lba) | |
1836 | { | |
1837 | unsigned int i; | |
1838 | struct sd_dif_tuple *sdt; | |
1839 | sector_t sector; | |
1840 | ||
c45eabec | 1841 | for (i = 0; i < sectors; i++, ei_lba++) { |
bb8c063c AM |
1842 | int ret; |
1843 | ||
1844 | sector = start_sec + i; | |
1845 | sdt = dif_store(sector); | |
1846 | ||
51d648af | 1847 | if (sdt->app_tag == cpu_to_be16(0xffff)) |
bb8c063c AM |
1848 | continue; |
1849 | ||
1850 | ret = dif_verify(sdt, fake_store(sector), sector, ei_lba); | |
1851 | if (ret) { | |
1852 | dif_errors++; | |
1853 | return ret; | |
1854 | } | |
bb8c063c | 1855 | } |
c6a44287 | 1856 | |
65f72f2a | 1857 | dif_copy_prot(SCpnt, start_sec, sectors, true); |
c6a44287 MP |
1858 | dix_reads++; |
1859 | ||
1860 | return 0; | |
1861 | } | |
1862 | ||
19789100 | 1863 | static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba, |
395cef03 MP |
1864 | unsigned int num, struct sdebug_dev_info *devip, |
1865 | u32 ei_lba) | |
19789100 FT |
1866 | { |
1867 | unsigned long iflags; | |
1868 | int ret; | |
1869 | ||
1870 | ret = check_device_access_params(devip, lba, num); | |
1871 | if (ret) | |
1872 | return ret; | |
1873 | ||
1da177e4 | 1874 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
32f7ef73 | 1875 | (lba <= (OPT_MEDIUM_ERR_ADDR + OPT_MEDIUM_ERR_NUM - 1)) && |
c65b1445 DG |
1876 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { |
1877 | /* claim unrecoverable read error */ | |
32f7ef73 | 1878 | mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, 0); |
c65b1445 DG |
1879 | /* set info field and valid bit for fixed descriptor */ |
1880 | if (0x70 == (devip->sense_buff[0] & 0x7f)) { | |
1881 | devip->sense_buff[0] |= 0x80; /* Valid bit */ | |
32f7ef73 DG |
1882 | ret = (lba < OPT_MEDIUM_ERR_ADDR) |
1883 | ? OPT_MEDIUM_ERR_ADDR : (int)lba; | |
c65b1445 DG |
1884 | devip->sense_buff[3] = (ret >> 24) & 0xff; |
1885 | devip->sense_buff[4] = (ret >> 16) & 0xff; | |
1886 | devip->sense_buff[5] = (ret >> 8) & 0xff; | |
1887 | devip->sense_buff[6] = ret & 0xff; | |
1888 | } | |
a87e3a67 | 1889 | scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); |
1da177e4 LT |
1890 | return check_condition_result; |
1891 | } | |
c6a44287 | 1892 | |
6c78cc06 AM |
1893 | read_lock_irqsave(&atomic_rw, iflags); |
1894 | ||
c6a44287 MP |
1895 | /* DIX + T10 DIF */ |
1896 | if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { | |
395cef03 | 1897 | int prot_ret = prot_verify_read(SCpnt, lba, num, ei_lba); |
c6a44287 MP |
1898 | |
1899 | if (prot_ret) { | |
6c78cc06 | 1900 | read_unlock_irqrestore(&atomic_rw, iflags); |
c6a44287 MP |
1901 | mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, prot_ret); |
1902 | return illegal_condition_result; | |
1903 | } | |
1904 | } | |
1905 | ||
19789100 | 1906 | ret = do_device_access(SCpnt, devip, lba, num, 0); |
1da177e4 | 1907 | read_unlock_irqrestore(&atomic_rw, iflags); |
a4517511 AM |
1908 | if (ret == -1) |
1909 | return DID_ERROR << 16; | |
1910 | ||
1911 | scsi_in(SCpnt)->resid = scsi_bufflen(SCpnt) - ret; | |
1912 | ||
1913 | return 0; | |
1da177e4 LT |
1914 | } |
1915 | ||
c6a44287 MP |
1916 | void dump_sector(unsigned char *buf, int len) |
1917 | { | |
1918 | int i, j; | |
1919 | ||
1920 | printk(KERN_ERR ">>> Sector Dump <<<\n"); | |
1921 | ||
1922 | for (i = 0 ; i < len ; i += 16) { | |
1923 | printk(KERN_ERR "%04d: ", i); | |
1924 | ||
1925 | for (j = 0 ; j < 16 ; j++) { | |
1926 | unsigned char c = buf[i+j]; | |
1927 | if (c >= 0x20 && c < 0x7e) | |
1928 | printk(" %c ", buf[i+j]); | |
1929 | else | |
1930 | printk("%02x ", buf[i+j]); | |
1931 | } | |
1932 | ||
1933 | printk("\n"); | |
1934 | } | |
1935 | } | |
1936 | ||
1937 | static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, | |
395cef03 | 1938 | unsigned int sectors, u32 ei_lba) |
c6a44287 | 1939 | { |
be4e11be | 1940 | int ret; |
c6a44287 | 1941 | struct sd_dif_tuple *sdt; |
be4e11be | 1942 | void *daddr; |
65f72f2a | 1943 | sector_t sector = start_sec; |
c6a44287 | 1944 | int ppage_offset; |
be4e11be AM |
1945 | int dpage_offset; |
1946 | struct sg_mapping_iter diter; | |
1947 | struct sg_mapping_iter piter; | |
c6a44287 | 1948 | |
c6a44287 MP |
1949 | BUG_ON(scsi_sg_count(SCpnt) == 0); |
1950 | BUG_ON(scsi_prot_sg_count(SCpnt) == 0); | |
1951 | ||
be4e11be AM |
1952 | sg_miter_start(&piter, scsi_prot_sglist(SCpnt), |
1953 | scsi_prot_sg_count(SCpnt), | |
1954 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); | |
1955 | sg_miter_start(&diter, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), | |
1956 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); | |
1957 | ||
1958 | /* For each protection page */ | |
1959 | while (sg_miter_next(&piter)) { | |
1960 | dpage_offset = 0; | |
1961 | if (WARN_ON(!sg_miter_next(&diter))) { | |
1962 | ret = 0x01; | |
1963 | goto out; | |
1964 | } | |
c6a44287 | 1965 | |
be4e11be AM |
1966 | for (ppage_offset = 0; ppage_offset < piter.length; |
1967 | ppage_offset += sizeof(struct sd_dif_tuple)) { | |
c6a44287 | 1968 | /* If we're at the end of the current |
be4e11be | 1969 | * data page advance to the next one |
c6a44287 | 1970 | */ |
be4e11be AM |
1971 | if (dpage_offset >= diter.length) { |
1972 | if (WARN_ON(!sg_miter_next(&diter))) { | |
1973 | ret = 0x01; | |
1974 | goto out; | |
1975 | } | |
1976 | dpage_offset = 0; | |
c6a44287 MP |
1977 | } |
1978 | ||
be4e11be AM |
1979 | sdt = piter.addr + ppage_offset; |
1980 | daddr = diter.addr + dpage_offset; | |
c6a44287 | 1981 | |
be4e11be | 1982 | ret = dif_verify(sdt, daddr, sector, ei_lba); |
beb40ea4 | 1983 | if (ret) { |
be4e11be | 1984 | dump_sector(daddr, scsi_debug_sector_size); |
395cef03 MP |
1985 | goto out; |
1986 | } | |
1987 | ||
c6a44287 | 1988 | sector++; |
395cef03 | 1989 | ei_lba++; |
be4e11be | 1990 | dpage_offset += scsi_debug_sector_size; |
c6a44287 | 1991 | } |
be4e11be AM |
1992 | diter.consumed = dpage_offset; |
1993 | sg_miter_stop(&diter); | |
c6a44287 | 1994 | } |
be4e11be | 1995 | sg_miter_stop(&piter); |
c6a44287 | 1996 | |
65f72f2a | 1997 | dif_copy_prot(SCpnt, start_sec, sectors, false); |
c6a44287 MP |
1998 | dix_writes++; |
1999 | ||
2000 | return 0; | |
2001 | ||
2002 | out: | |
2003 | dif_errors++; | |
be4e11be AM |
2004 | sg_miter_stop(&diter); |
2005 | sg_miter_stop(&piter); | |
c6a44287 MP |
2006 | return ret; |
2007 | } | |
2008 | ||
b90ebc3d AM |
2009 | static unsigned long lba_to_map_index(sector_t lba) |
2010 | { | |
2011 | if (scsi_debug_unmap_alignment) { | |
2012 | lba += scsi_debug_unmap_granularity - | |
2013 | scsi_debug_unmap_alignment; | |
2014 | } | |
2015 | do_div(lba, scsi_debug_unmap_granularity); | |
2016 | ||
2017 | return lba; | |
2018 | } | |
2019 | ||
2020 | static sector_t map_index_to_lba(unsigned long index) | |
44d92694 | 2021 | { |
a027b5b9 AM |
2022 | sector_t lba = index * scsi_debug_unmap_granularity; |
2023 | ||
2024 | if (scsi_debug_unmap_alignment) { | |
2025 | lba -= scsi_debug_unmap_granularity - | |
2026 | scsi_debug_unmap_alignment; | |
2027 | } | |
2028 | ||
2029 | return lba; | |
b90ebc3d | 2030 | } |
44d92694 | 2031 | |
b90ebc3d AM |
2032 | static unsigned int map_state(sector_t lba, unsigned int *num) |
2033 | { | |
2034 | sector_t end; | |
2035 | unsigned int mapped; | |
2036 | unsigned long index; | |
2037 | unsigned long next; | |
44d92694 | 2038 | |
b90ebc3d AM |
2039 | index = lba_to_map_index(lba); |
2040 | mapped = test_bit(index, map_storep); | |
44d92694 MP |
2041 | |
2042 | if (mapped) | |
b90ebc3d | 2043 | next = find_next_zero_bit(map_storep, map_size, index); |
44d92694 | 2044 | else |
b90ebc3d | 2045 | next = find_next_bit(map_storep, map_size, index); |
44d92694 | 2046 | |
b90ebc3d | 2047 | end = min_t(sector_t, sdebug_store_sectors, map_index_to_lba(next)); |
44d92694 MP |
2048 | *num = end - lba; |
2049 | ||
2050 | return mapped; | |
2051 | } | |
2052 | ||
2053 | static void map_region(sector_t lba, unsigned int len) | |
2054 | { | |
44d92694 MP |
2055 | sector_t end = lba + len; |
2056 | ||
44d92694 | 2057 | while (lba < end) { |
b90ebc3d | 2058 | unsigned long index = lba_to_map_index(lba); |
44d92694 | 2059 | |
b90ebc3d AM |
2060 | if (index < map_size) |
2061 | set_bit(index, map_storep); | |
44d92694 | 2062 | |
b90ebc3d | 2063 | lba = map_index_to_lba(index + 1); |
44d92694 MP |
2064 | } |
2065 | } | |
2066 | ||
2067 | static void unmap_region(sector_t lba, unsigned int len) | |
2068 | { | |
44d92694 MP |
2069 | sector_t end = lba + len; |
2070 | ||
44d92694 | 2071 | while (lba < end) { |
b90ebc3d | 2072 | unsigned long index = lba_to_map_index(lba); |
44d92694 | 2073 | |
b90ebc3d AM |
2074 | if (lba == map_index_to_lba(index) && |
2075 | lba + scsi_debug_unmap_granularity <= end && | |
2076 | index < map_size) { | |
2077 | clear_bit(index, map_storep); | |
2078 | if (scsi_debug_lbprz) { | |
be1dd78d | 2079 | memset(fake_storep + |
cc34a8e6 AM |
2080 | lba * scsi_debug_sector_size, 0, |
2081 | scsi_debug_sector_size * | |
2082 | scsi_debug_unmap_granularity); | |
b90ebc3d | 2083 | } |
e9926b43 AM |
2084 | if (dif_storep) { |
2085 | memset(dif_storep + lba, 0xff, | |
2086 | sizeof(*dif_storep) * | |
2087 | scsi_debug_unmap_granularity); | |
2088 | } | |
be1dd78d | 2089 | } |
b90ebc3d | 2090 | lba = map_index_to_lba(index + 1); |
44d92694 MP |
2091 | } |
2092 | } | |
2093 | ||
19789100 | 2094 | static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba, |
395cef03 MP |
2095 | unsigned int num, struct sdebug_dev_info *devip, |
2096 | u32 ei_lba) | |
1da177e4 LT |
2097 | { |
2098 | unsigned long iflags; | |
19789100 | 2099 | int ret; |
1da177e4 | 2100 | |
19789100 FT |
2101 | ret = check_device_access_params(devip, lba, num); |
2102 | if (ret) | |
2103 | return ret; | |
1da177e4 | 2104 | |
6c78cc06 AM |
2105 | write_lock_irqsave(&atomic_rw, iflags); |
2106 | ||
c6a44287 MP |
2107 | /* DIX + T10 DIF */ |
2108 | if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { | |
395cef03 | 2109 | int prot_ret = prot_verify_write(SCpnt, lba, num, ei_lba); |
c6a44287 MP |
2110 | |
2111 | if (prot_ret) { | |
6c78cc06 | 2112 | write_unlock_irqrestore(&atomic_rw, iflags); |
c6a44287 MP |
2113 | mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, prot_ret); |
2114 | return illegal_condition_result; | |
2115 | } | |
2116 | } | |
2117 | ||
19789100 | 2118 | ret = do_device_access(SCpnt, devip, lba, num, 1); |
9ed8d3dc | 2119 | if (scsi_debug_lbp()) |
44d92694 | 2120 | map_region(lba, num); |
1da177e4 | 2121 | write_unlock_irqrestore(&atomic_rw, iflags); |
19789100 | 2122 | if (-1 == ret) |
1da177e4 | 2123 | return (DID_ERROR << 16); |
597136ab | 2124 | else if ((ret < (num * scsi_debug_sector_size)) && |
1da177e4 | 2125 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
c65b1445 | 2126 | printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " |
597136ab | 2127 | " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret); |
44d92694 MP |
2128 | |
2129 | return 0; | |
2130 | } | |
2131 | ||
2132 | static int resp_write_same(struct scsi_cmnd *scmd, unsigned long long lba, | |
2133 | unsigned int num, struct sdebug_dev_info *devip, | |
2134 | u32 ei_lba, unsigned int unmap) | |
2135 | { | |
2136 | unsigned long iflags; | |
2137 | unsigned long long i; | |
2138 | int ret; | |
2139 | ||
2140 | ret = check_device_access_params(devip, lba, num); | |
2141 | if (ret) | |
2142 | return ret; | |
2143 | ||
5b94e232 MP |
2144 | if (num > scsi_debug_write_same_length) { |
2145 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
2146 | 0); | |
2147 | return check_condition_result; | |
2148 | } | |
2149 | ||
44d92694 MP |
2150 | write_lock_irqsave(&atomic_rw, iflags); |
2151 | ||
9ed8d3dc | 2152 | if (unmap && scsi_debug_lbp()) { |
44d92694 MP |
2153 | unmap_region(lba, num); |
2154 | goto out; | |
2155 | } | |
2156 | ||
2157 | /* Else fetch one logical block */ | |
2158 | ret = fetch_to_dev_buffer(scmd, | |
2159 | fake_storep + (lba * scsi_debug_sector_size), | |
2160 | scsi_debug_sector_size); | |
2161 | ||
2162 | if (-1 == ret) { | |
2163 | write_unlock_irqrestore(&atomic_rw, iflags); | |
2164 | return (DID_ERROR << 16); | |
2165 | } else if ((ret < (num * scsi_debug_sector_size)) && | |
2166 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
2167 | printk(KERN_INFO "scsi_debug: write same: cdb indicated=%u, " | |
2168 | " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret); | |
2169 | ||
2170 | /* Copy first sector to remaining blocks */ | |
2171 | for (i = 1 ; i < num ; i++) | |
2172 | memcpy(fake_storep + ((lba + i) * scsi_debug_sector_size), | |
2173 | fake_storep + (lba * scsi_debug_sector_size), | |
2174 | scsi_debug_sector_size); | |
2175 | ||
9ed8d3dc | 2176 | if (scsi_debug_lbp()) |
44d92694 MP |
2177 | map_region(lba, num); |
2178 | out: | |
2179 | write_unlock_irqrestore(&atomic_rw, iflags); | |
2180 | ||
1da177e4 LT |
2181 | return 0; |
2182 | } | |
2183 | ||
44d92694 MP |
2184 | struct unmap_block_desc { |
2185 | __be64 lba; | |
2186 | __be32 blocks; | |
2187 | __be32 __reserved; | |
2188 | }; | |
2189 | ||
2190 | static int resp_unmap(struct scsi_cmnd * scmd, struct sdebug_dev_info * devip) | |
2191 | { | |
2192 | unsigned char *buf; | |
2193 | struct unmap_block_desc *desc; | |
2194 | unsigned int i, payload_len, descriptors; | |
2195 | int ret; | |
6c78cc06 | 2196 | unsigned long iflags; |
44d92694 MP |
2197 | |
2198 | ret = check_readiness(scmd, 1, devip); | |
2199 | if (ret) | |
2200 | return ret; | |
2201 | ||
2202 | payload_len = get_unaligned_be16(&scmd->cmnd[7]); | |
2203 | BUG_ON(scsi_bufflen(scmd) != payload_len); | |
2204 | ||
2205 | descriptors = (payload_len - 8) / 16; | |
2206 | ||
2207 | buf = kmalloc(scsi_bufflen(scmd), GFP_ATOMIC); | |
2208 | if (!buf) | |
2209 | return check_condition_result; | |
2210 | ||
2211 | scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd)); | |
2212 | ||
2213 | BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2); | |
2214 | BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16); | |
2215 | ||
2216 | desc = (void *)&buf[8]; | |
2217 | ||
6c78cc06 AM |
2218 | write_lock_irqsave(&atomic_rw, iflags); |
2219 | ||
44d92694 MP |
2220 | for (i = 0 ; i < descriptors ; i++) { |
2221 | unsigned long long lba = get_unaligned_be64(&desc[i].lba); | |
2222 | unsigned int num = get_unaligned_be32(&desc[i].blocks); | |
2223 | ||
2224 | ret = check_device_access_params(devip, lba, num); | |
2225 | if (ret) | |
2226 | goto out; | |
2227 | ||
2228 | unmap_region(lba, num); | |
2229 | } | |
2230 | ||
2231 | ret = 0; | |
2232 | ||
2233 | out: | |
6c78cc06 | 2234 | write_unlock_irqrestore(&atomic_rw, iflags); |
44d92694 MP |
2235 | kfree(buf); |
2236 | ||
2237 | return ret; | |
2238 | } | |
2239 | ||
2240 | #define SDEBUG_GET_LBA_STATUS_LEN 32 | |
2241 | ||
2242 | static int resp_get_lba_status(struct scsi_cmnd * scmd, | |
2243 | struct sdebug_dev_info * devip) | |
2244 | { | |
2245 | unsigned long long lba; | |
2246 | unsigned int alloc_len, mapped, num; | |
2247 | unsigned char arr[SDEBUG_GET_LBA_STATUS_LEN]; | |
2248 | int ret; | |
2249 | ||
2250 | ret = check_readiness(scmd, 1, devip); | |
2251 | if (ret) | |
2252 | return ret; | |
2253 | ||
2254 | lba = get_unaligned_be64(&scmd->cmnd[2]); | |
2255 | alloc_len = get_unaligned_be32(&scmd->cmnd[10]); | |
2256 | ||
2257 | if (alloc_len < 24) | |
2258 | return 0; | |
2259 | ||
2260 | ret = check_device_access_params(devip, lba, 1); | |
2261 | if (ret) | |
2262 | return ret; | |
2263 | ||
2264 | mapped = map_state(lba, &num); | |
2265 | ||
2266 | memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN); | |
de13e965 | 2267 | put_unaligned_be32(20, &arr[0]); /* Parameter Data Length */ |
44d92694 MP |
2268 | put_unaligned_be64(lba, &arr[8]); /* LBA */ |
2269 | put_unaligned_be32(num, &arr[16]); /* Number of blocks */ | |
2270 | arr[20] = !mapped; /* mapped = 0, unmapped = 1 */ | |
2271 | ||
2272 | return fill_from_dev_buffer(scmd, arr, SDEBUG_GET_LBA_STATUS_LEN); | |
2273 | } | |
2274 | ||
c65b1445 | 2275 | #define SDEBUG_RLUN_ARR_SZ 256 |
1da177e4 LT |
2276 | |
2277 | static int resp_report_luns(struct scsi_cmnd * scp, | |
2278 | struct sdebug_dev_info * devip) | |
2279 | { | |
2280 | unsigned int alloc_len; | |
c65b1445 | 2281 | int lun_cnt, i, upper, num, n, wlun, lun; |
1da177e4 LT |
2282 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
2283 | int select_report = (int)cmd[2]; | |
2284 | struct scsi_lun *one_lun; | |
2285 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; | |
c65b1445 | 2286 | unsigned char * max_addr; |
1da177e4 LT |
2287 | |
2288 | alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); | |
c65b1445 | 2289 | if ((alloc_len < 4) || (select_report > 2)) { |
1da177e4 LT |
2290 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
2291 | 0); | |
2292 | return check_condition_result; | |
2293 | } | |
2294 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ | |
2295 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); | |
2296 | lun_cnt = scsi_debug_max_luns; | |
c65b1445 DG |
2297 | if (1 == select_report) |
2298 | lun_cnt = 0; | |
2299 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) | |
2300 | --lun_cnt; | |
2301 | wlun = (select_report > 0) ? 1 : 0; | |
2302 | num = lun_cnt + wlun; | |
2303 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; | |
2304 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; | |
2305 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / | |
2306 | sizeof(struct scsi_lun)), num); | |
2307 | if (n < num) { | |
2308 | wlun = 0; | |
2309 | lun_cnt = n; | |
2310 | } | |
1da177e4 | 2311 | one_lun = (struct scsi_lun *) &arr[8]; |
c65b1445 DG |
2312 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
2313 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); | |
2314 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); | |
2315 | i++, lun++) { | |
2316 | upper = (lun >> 8) & 0x3f; | |
1da177e4 LT |
2317 | if (upper) |
2318 | one_lun[i].scsi_lun[0] = | |
2319 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); | |
c65b1445 DG |
2320 | one_lun[i].scsi_lun[1] = lun & 0xff; |
2321 | } | |
2322 | if (wlun) { | |
2323 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; | |
2324 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; | |
2325 | i++; | |
1da177e4 | 2326 | } |
c65b1445 | 2327 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
1da177e4 LT |
2328 | return fill_from_dev_buffer(scp, arr, |
2329 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); | |
2330 | } | |
2331 | ||
c639d14e FT |
2332 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
2333 | unsigned int num, struct sdebug_dev_info *devip) | |
2334 | { | |
be4e11be | 2335 | int j; |
c639d14e FT |
2336 | unsigned char *kaddr, *buf; |
2337 | unsigned int offset; | |
c639d14e | 2338 | struct scsi_data_buffer *sdb = scsi_in(scp); |
be4e11be | 2339 | struct sg_mapping_iter miter; |
c639d14e FT |
2340 | |
2341 | /* better not to use temporary buffer. */ | |
2342 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); | |
c5af0db9 AM |
2343 | if (!buf) { |
2344 | mk_sense_buffer(devip, NOT_READY, | |
2345 | LOGICAL_UNIT_COMMUNICATION_FAILURE, 0); | |
2346 | return check_condition_result; | |
2347 | } | |
c639d14e | 2348 | |
21a61829 | 2349 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
c639d14e FT |
2350 | |
2351 | offset = 0; | |
be4e11be AM |
2352 | sg_miter_start(&miter, sdb->table.sgl, sdb->table.nents, |
2353 | SG_MITER_ATOMIC | SG_MITER_TO_SG); | |
c639d14e | 2354 | |
be4e11be AM |
2355 | while (sg_miter_next(&miter)) { |
2356 | kaddr = miter.addr; | |
2357 | for (j = 0; j < miter.length; j++) | |
2358 | *(kaddr + j) ^= *(buf + offset + j); | |
c639d14e | 2359 | |
be4e11be | 2360 | offset += miter.length; |
c639d14e | 2361 | } |
be4e11be | 2362 | sg_miter_stop(&miter); |
c639d14e FT |
2363 | kfree(buf); |
2364 | ||
be4e11be | 2365 | return 0; |
c639d14e FT |
2366 | } |
2367 | ||
1da177e4 LT |
2368 | /* When timer goes off this function is called. */ |
2369 | static void timer_intr_handler(unsigned long indx) | |
2370 | { | |
2371 | struct sdebug_queued_cmd * sqcp; | |
2372 | unsigned long iflags; | |
2373 | ||
78d4e5a0 | 2374 | if (indx >= scsi_debug_max_queue) { |
1da177e4 LT |
2375 | printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " |
2376 | "large\n"); | |
2377 | return; | |
2378 | } | |
2379 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2380 | sqcp = &queued_arr[(int)indx]; | |
2381 | if (! sqcp->in_use) { | |
2382 | printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected " | |
2383 | "interrupt\n"); | |
2384 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2385 | return; | |
2386 | } | |
2387 | sqcp->in_use = 0; | |
2388 | if (sqcp->done_funct) { | |
2389 | sqcp->a_cmnd->result = sqcp->scsi_result; | |
2390 | sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */ | |
2391 | } | |
2392 | sqcp->done_funct = NULL; | |
2393 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2394 | } | |
2395 | ||
1da177e4 | 2396 | |
8dea0d02 FT |
2397 | static struct sdebug_dev_info * |
2398 | sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags) | |
5cb2fc06 FT |
2399 | { |
2400 | struct sdebug_dev_info *devip; | |
2401 | ||
2402 | devip = kzalloc(sizeof(*devip), flags); | |
2403 | if (devip) { | |
2404 | devip->sdbg_host = sdbg_host; | |
2405 | list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); | |
2406 | } | |
2407 | return devip; | |
2408 | } | |
2409 | ||
1da177e4 LT |
2410 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
2411 | { | |
2412 | struct sdebug_host_info * sdbg_host; | |
2413 | struct sdebug_dev_info * open_devip = NULL; | |
2414 | struct sdebug_dev_info * devip = | |
2415 | (struct sdebug_dev_info *)sdev->hostdata; | |
2416 | ||
2417 | if (devip) | |
2418 | return devip; | |
d1e4c9c5 FT |
2419 | sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
2420 | if (!sdbg_host) { | |
1da177e4 LT |
2421 | printk(KERN_ERR "Host info NULL\n"); |
2422 | return NULL; | |
2423 | } | |
2424 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { | |
2425 | if ((devip->used) && (devip->channel == sdev->channel) && | |
2426 | (devip->target == sdev->id) && | |
2427 | (devip->lun == sdev->lun)) | |
2428 | return devip; | |
2429 | else { | |
2430 | if ((!devip->used) && (!open_devip)) | |
2431 | open_devip = devip; | |
2432 | } | |
2433 | } | |
5cb2fc06 FT |
2434 | if (!open_devip) { /* try and make a new one */ |
2435 | open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); | |
2436 | if (!open_devip) { | |
1da177e4 | 2437 | printk(KERN_ERR "%s: out of memory at line %d\n", |
cadbd4a5 | 2438 | __func__, __LINE__); |
1da177e4 LT |
2439 | return NULL; |
2440 | } | |
1da177e4 | 2441 | } |
a75869d1 FT |
2442 | |
2443 | open_devip->channel = sdev->channel; | |
2444 | open_devip->target = sdev->id; | |
2445 | open_devip->lun = sdev->lun; | |
2446 | open_devip->sdbg_host = sdbg_host; | |
2447 | open_devip->reset = 1; | |
2448 | open_devip->used = 1; | |
2449 | memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); | |
2450 | if (scsi_debug_dsense) | |
2451 | open_devip->sense_buff[0] = 0x72; | |
2452 | else { | |
2453 | open_devip->sense_buff[0] = 0x70; | |
2454 | open_devip->sense_buff[7] = 0xa; | |
2455 | } | |
2456 | if (sdev->lun == SAM2_WLUN_REPORT_LUNS) | |
2457 | open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; | |
2458 | ||
2459 | return open_devip; | |
1da177e4 LT |
2460 | } |
2461 | ||
8dea0d02 | 2462 | static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
1da177e4 | 2463 | { |
8dea0d02 FT |
2464 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
2465 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", | |
2466 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
75ad23bc | 2467 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); |
8dea0d02 FT |
2468 | return 0; |
2469 | } | |
1da177e4 | 2470 | |
8dea0d02 FT |
2471 | static int scsi_debug_slave_configure(struct scsi_device *sdp) |
2472 | { | |
2473 | struct sdebug_dev_info *devip; | |
a34c4e98 | 2474 | |
8dea0d02 FT |
2475 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
2476 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", | |
2477 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
2478 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) | |
2479 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; | |
2480 | devip = devInfoReg(sdp); | |
2481 | if (NULL == devip) | |
2482 | return 1; /* no resources, will be marked offline */ | |
2483 | sdp->hostdata = devip; | |
2484 | if (sdp->host->cmd_per_lun) | |
2485 | scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, | |
2486 | sdp->host->cmd_per_lun); | |
2487 | blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); | |
78d4e5a0 DG |
2488 | if (scsi_debug_no_uld) |
2489 | sdp->no_uld_attach = 1; | |
8dea0d02 FT |
2490 | return 0; |
2491 | } | |
2492 | ||
2493 | static void scsi_debug_slave_destroy(struct scsi_device *sdp) | |
2494 | { | |
2495 | struct sdebug_dev_info *devip = | |
2496 | (struct sdebug_dev_info *)sdp->hostdata; | |
a34c4e98 | 2497 | |
1da177e4 | 2498 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
8dea0d02 FT |
2499 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", |
2500 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
2501 | if (devip) { | |
25985edc | 2502 | /* make this slot available for re-use */ |
8dea0d02 FT |
2503 | devip->used = 0; |
2504 | sdp->hostdata = NULL; | |
2505 | } | |
2506 | } | |
2507 | ||
2508 | /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ | |
2509 | static int stop_queued_cmnd(struct scsi_cmnd *cmnd) | |
2510 | { | |
2511 | unsigned long iflags; | |
2512 | int k; | |
2513 | struct sdebug_queued_cmd *sqcp; | |
2514 | ||
2515 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
78d4e5a0 | 2516 | for (k = 0; k < scsi_debug_max_queue; ++k) { |
8dea0d02 FT |
2517 | sqcp = &queued_arr[k]; |
2518 | if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { | |
2519 | del_timer_sync(&sqcp->cmnd_timer); | |
2520 | sqcp->in_use = 0; | |
2521 | sqcp->a_cmnd = NULL; | |
2522 | break; | |
2523 | } | |
2524 | } | |
2525 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
78d4e5a0 | 2526 | return (k < scsi_debug_max_queue) ? 1 : 0; |
8dea0d02 FT |
2527 | } |
2528 | ||
2529 | /* Deletes (stops) timers of all queued commands */ | |
2530 | static void stop_all_queued(void) | |
2531 | { | |
2532 | unsigned long iflags; | |
2533 | int k; | |
2534 | struct sdebug_queued_cmd *sqcp; | |
2535 | ||
2536 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
78d4e5a0 | 2537 | for (k = 0; k < scsi_debug_max_queue; ++k) { |
8dea0d02 FT |
2538 | sqcp = &queued_arr[k]; |
2539 | if (sqcp->in_use && sqcp->a_cmnd) { | |
2540 | del_timer_sync(&sqcp->cmnd_timer); | |
2541 | sqcp->in_use = 0; | |
2542 | sqcp->a_cmnd = NULL; | |
2543 | } | |
2544 | } | |
2545 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1da177e4 LT |
2546 | } |
2547 | ||
2548 | static int scsi_debug_abort(struct scsi_cmnd * SCpnt) | |
2549 | { | |
2550 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2551 | printk(KERN_INFO "scsi_debug: abort\n"); | |
2552 | ++num_aborts; | |
2553 | stop_queued_cmnd(SCpnt); | |
2554 | return SUCCESS; | |
2555 | } | |
2556 | ||
2557 | static int scsi_debug_biosparam(struct scsi_device *sdev, | |
2558 | struct block_device * bdev, sector_t capacity, int *info) | |
2559 | { | |
2560 | int res; | |
2561 | unsigned char *buf; | |
2562 | ||
2563 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2564 | printk(KERN_INFO "scsi_debug: biosparam\n"); | |
2565 | buf = scsi_bios_ptable(bdev); | |
2566 | if (buf) { | |
2567 | res = scsi_partsize(buf, capacity, | |
2568 | &info[2], &info[0], &info[1]); | |
2569 | kfree(buf); | |
2570 | if (! res) | |
2571 | return res; | |
2572 | } | |
2573 | info[0] = sdebug_heads; | |
2574 | info[1] = sdebug_sectors_per; | |
2575 | info[2] = sdebug_cylinders_per; | |
2576 | return 0; | |
2577 | } | |
2578 | ||
2579 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) | |
2580 | { | |
2581 | struct sdebug_dev_info * devip; | |
2582 | ||
2583 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2584 | printk(KERN_INFO "scsi_debug: device_reset\n"); | |
2585 | ++num_dev_resets; | |
2586 | if (SCpnt) { | |
2587 | devip = devInfoReg(SCpnt->device); | |
2588 | if (devip) | |
2589 | devip->reset = 1; | |
2590 | } | |
2591 | return SUCCESS; | |
2592 | } | |
2593 | ||
2594 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) | |
2595 | { | |
2596 | struct sdebug_host_info *sdbg_host; | |
2597 | struct sdebug_dev_info * dev_info; | |
2598 | struct scsi_device * sdp; | |
2599 | struct Scsi_Host * hp; | |
2600 | ||
2601 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2602 | printk(KERN_INFO "scsi_debug: bus_reset\n"); | |
2603 | ++num_bus_resets; | |
2604 | if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { | |
d1e4c9c5 | 2605 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
1da177e4 LT |
2606 | if (sdbg_host) { |
2607 | list_for_each_entry(dev_info, | |
2608 | &sdbg_host->dev_info_list, | |
2609 | dev_list) | |
2610 | dev_info->reset = 1; | |
2611 | } | |
2612 | } | |
2613 | return SUCCESS; | |
2614 | } | |
2615 | ||
2616 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) | |
2617 | { | |
2618 | struct sdebug_host_info * sdbg_host; | |
2619 | struct sdebug_dev_info * dev_info; | |
2620 | ||
2621 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2622 | printk(KERN_INFO "scsi_debug: host_reset\n"); | |
2623 | ++num_host_resets; | |
2624 | spin_lock(&sdebug_host_list_lock); | |
2625 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
2626 | list_for_each_entry(dev_info, &sdbg_host->dev_info_list, | |
2627 | dev_list) | |
2628 | dev_info->reset = 1; | |
2629 | } | |
2630 | spin_unlock(&sdebug_host_list_lock); | |
2631 | stop_all_queued(); | |
2632 | return SUCCESS; | |
2633 | } | |
2634 | ||
1da177e4 LT |
2635 | /* Initializes timers in queued array */ |
2636 | static void __init init_all_queued(void) | |
2637 | { | |
2638 | unsigned long iflags; | |
2639 | int k; | |
2640 | struct sdebug_queued_cmd * sqcp; | |
2641 | ||
2642 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
78d4e5a0 | 2643 | for (k = 0; k < scsi_debug_max_queue; ++k) { |
1da177e4 LT |
2644 | sqcp = &queued_arr[k]; |
2645 | init_timer(&sqcp->cmnd_timer); | |
2646 | sqcp->in_use = 0; | |
2647 | sqcp->a_cmnd = NULL; | |
2648 | } | |
2649 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2650 | } | |
2651 | ||
f58b0efb | 2652 | static void __init sdebug_build_parts(unsigned char *ramp, |
5f2578e5 | 2653 | unsigned long store_size) |
1da177e4 LT |
2654 | { |
2655 | struct partition * pp; | |
2656 | int starts[SDEBUG_MAX_PARTS + 2]; | |
2657 | int sectors_per_part, num_sectors, k; | |
2658 | int heads_by_sects, start_sec, end_sec; | |
2659 | ||
2660 | /* assume partition table already zeroed */ | |
f58b0efb | 2661 | if ((scsi_debug_num_parts < 1) || (store_size < 1048576)) |
1da177e4 LT |
2662 | return; |
2663 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { | |
2664 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; | |
2665 | printk(KERN_WARNING "scsi_debug:build_parts: reducing " | |
2666 | "partitions to %d\n", SDEBUG_MAX_PARTS); | |
2667 | } | |
c65b1445 | 2668 | num_sectors = (int)sdebug_store_sectors; |
1da177e4 LT |
2669 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
2670 | / scsi_debug_num_parts; | |
2671 | heads_by_sects = sdebug_heads * sdebug_sectors_per; | |
2672 | starts[0] = sdebug_sectors_per; | |
2673 | for (k = 1; k < scsi_debug_num_parts; ++k) | |
2674 | starts[k] = ((k * sectors_per_part) / heads_by_sects) | |
2675 | * heads_by_sects; | |
2676 | starts[scsi_debug_num_parts] = num_sectors; | |
2677 | starts[scsi_debug_num_parts + 1] = 0; | |
2678 | ||
2679 | ramp[510] = 0x55; /* magic partition markings */ | |
2680 | ramp[511] = 0xAA; | |
2681 | pp = (struct partition *)(ramp + 0x1be); | |
2682 | for (k = 0; starts[k + 1]; ++k, ++pp) { | |
2683 | start_sec = starts[k]; | |
2684 | end_sec = starts[k + 1] - 1; | |
2685 | pp->boot_ind = 0; | |
2686 | ||
2687 | pp->cyl = start_sec / heads_by_sects; | |
2688 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) | |
2689 | / sdebug_sectors_per; | |
2690 | pp->sector = (start_sec % sdebug_sectors_per) + 1; | |
2691 | ||
2692 | pp->end_cyl = end_sec / heads_by_sects; | |
2693 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) | |
2694 | / sdebug_sectors_per; | |
2695 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; | |
2696 | ||
150c3544 AM |
2697 | pp->start_sect = cpu_to_le32(start_sec); |
2698 | pp->nr_sects = cpu_to_le32(end_sec - start_sec + 1); | |
1da177e4 LT |
2699 | pp->sys_ind = 0x83; /* plain Linux partition */ |
2700 | } | |
2701 | } | |
2702 | ||
2703 | static int schedule_resp(struct scsi_cmnd * cmnd, | |
2704 | struct sdebug_dev_info * devip, | |
2705 | done_funct_t done, int scsi_result, int delta_jiff) | |
2706 | { | |
2707 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) { | |
2708 | if (scsi_result) { | |
2709 | struct scsi_device * sdp = cmnd->device; | |
2710 | ||
c65b1445 DG |
2711 | printk(KERN_INFO "scsi_debug: <%u %u %u %u> " |
2712 | "non-zero result=0x%x\n", sdp->host->host_no, | |
2713 | sdp->channel, sdp->id, sdp->lun, scsi_result); | |
1da177e4 LT |
2714 | } |
2715 | } | |
2716 | if (cmnd && devip) { | |
2717 | /* simulate autosense by this driver */ | |
2718 | if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff)) | |
2719 | memcpy(cmnd->sense_buffer, devip->sense_buff, | |
2720 | (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ? | |
2721 | SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE); | |
2722 | } | |
2723 | if (delta_jiff <= 0) { | |
2724 | if (cmnd) | |
2725 | cmnd->result = scsi_result; | |
2726 | if (done) | |
2727 | done(cmnd); | |
2728 | return 0; | |
2729 | } else { | |
2730 | unsigned long iflags; | |
2731 | int k; | |
2732 | struct sdebug_queued_cmd * sqcp = NULL; | |
2733 | ||
2734 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
78d4e5a0 | 2735 | for (k = 0; k < scsi_debug_max_queue; ++k) { |
1da177e4 LT |
2736 | sqcp = &queued_arr[k]; |
2737 | if (! sqcp->in_use) | |
2738 | break; | |
2739 | } | |
78d4e5a0 | 2740 | if (k >= scsi_debug_max_queue) { |
1da177e4 LT |
2741 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
2742 | printk(KERN_WARNING "scsi_debug: can_queue exceeded\n"); | |
2743 | return 1; /* report busy to mid level */ | |
2744 | } | |
2745 | sqcp->in_use = 1; | |
2746 | sqcp->a_cmnd = cmnd; | |
2747 | sqcp->scsi_result = scsi_result; | |
2748 | sqcp->done_funct = done; | |
2749 | sqcp->cmnd_timer.function = timer_intr_handler; | |
2750 | sqcp->cmnd_timer.data = k; | |
2751 | sqcp->cmnd_timer.expires = jiffies + delta_jiff; | |
2752 | add_timer(&sqcp->cmnd_timer); | |
2753 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2754 | if (cmnd) | |
2755 | cmnd->result = 0; | |
2756 | return 0; | |
2757 | } | |
2758 | } | |
23183910 DG |
2759 | /* Note: The following macros create attribute files in the |
2760 | /sys/module/scsi_debug/parameters directory. Unfortunately this | |
2761 | driver is unaware of a change and cannot trigger auxiliary actions | |
2762 | as it can when the corresponding attribute in the | |
2763 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. | |
2764 | */ | |
c65b1445 | 2765 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
5b94e232 | 2766 | module_param_named(ato, scsi_debug_ato, int, S_IRUGO); |
0759c666 | 2767 | module_param_named(clustering, scsi_debug_clustering, bool, S_IRUGO | S_IWUSR); |
c65b1445 DG |
2768 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); |
2769 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); | |
5b94e232 MP |
2770 | module_param_named(dif, scsi_debug_dif, int, S_IRUGO); |
2771 | module_param_named(dix, scsi_debug_dix, int, S_IRUGO); | |
c65b1445 DG |
2772 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); |
2773 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); | |
23183910 | 2774 | module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); |
68aee7ba | 2775 | module_param_named(guard, scsi_debug_guard, uint, S_IRUGO); |
5b94e232 MP |
2776 | module_param_named(lbpu, scsi_debug_lbpu, int, S_IRUGO); |
2777 | module_param_named(lbpws, scsi_debug_lbpws, int, S_IRUGO); | |
2778 | module_param_named(lbpws10, scsi_debug_lbpws10, int, S_IRUGO); | |
be1dd78d | 2779 | module_param_named(lbprz, scsi_debug_lbprz, int, S_IRUGO); |
5b94e232 | 2780 | module_param_named(lowest_aligned, scsi_debug_lowest_aligned, int, S_IRUGO); |
c65b1445 | 2781 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
78d4e5a0 | 2782 | module_param_named(max_queue, scsi_debug_max_queue, int, S_IRUGO | S_IWUSR); |
c65b1445 | 2783 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); |
78d4e5a0 | 2784 | module_param_named(no_uld, scsi_debug_no_uld, int, S_IRUGO); |
c65b1445 DG |
2785 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); |
2786 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); | |
5b94e232 | 2787 | module_param_named(opt_blks, scsi_debug_opt_blks, int, S_IRUGO); |
c65b1445 | 2788 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); |
5b94e232 | 2789 | module_param_named(physblk_exp, scsi_debug_physblk_exp, int, S_IRUGO); |
c65b1445 | 2790 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); |
d986788b | 2791 | module_param_named(removable, scsi_debug_removable, bool, S_IRUGO | S_IWUSR); |
c65b1445 | 2792 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); |
597136ab | 2793 | module_param_named(sector_size, scsi_debug_sector_size, int, S_IRUGO); |
5b94e232 MP |
2794 | module_param_named(unmap_alignment, scsi_debug_unmap_alignment, int, S_IRUGO); |
2795 | module_param_named(unmap_granularity, scsi_debug_unmap_granularity, int, S_IRUGO); | |
44d92694 MP |
2796 | module_param_named(unmap_max_blocks, scsi_debug_unmap_max_blocks, int, S_IRUGO); |
2797 | module_param_named(unmap_max_desc, scsi_debug_unmap_max_desc, int, S_IRUGO); | |
5b94e232 MP |
2798 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); |
2799 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, | |
2800 | S_IRUGO | S_IWUSR); | |
2801 | module_param_named(write_same_length, scsi_debug_write_same_length, int, | |
2802 | S_IRUGO | S_IWUSR); | |
1da177e4 LT |
2803 | |
2804 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); | |
2805 | MODULE_DESCRIPTION("SCSI debug adapter driver"); | |
2806 | MODULE_LICENSE("GPL"); | |
2807 | MODULE_VERSION(SCSI_DEBUG_VERSION); | |
2808 | ||
2809 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); | |
5b94e232 | 2810 | MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)"); |
0759c666 | 2811 | MODULE_PARM_DESC(clustering, "when set enables larger transfers (def=0)"); |
1da177e4 | 2812 | MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); |
c65b1445 | 2813 | MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); |
5b94e232 MP |
2814 | MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); |
2815 | MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); | |
c65b1445 | 2816 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); |
beb87c33 | 2817 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
23183910 | 2818 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
5b94e232 MP |
2819 | MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)"); |
2820 | MODULE_PARM_DESC(lbpu, "enable LBP, support UNMAP command (def=0)"); | |
2821 | MODULE_PARM_DESC(lbpws, "enable LBP, support WRITE SAME(16) with UNMAP bit (def=0)"); | |
2822 | MODULE_PARM_DESC(lbpws10, "enable LBP, support WRITE SAME(10) with UNMAP bit (def=0)"); | |
be1dd78d | 2823 | MODULE_PARM_DESC(lbprz, "unmapped blocks return 0 on read (def=1)"); |
5b94e232 | 2824 | MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)"); |
c65b1445 | 2825 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
78d4e5a0 | 2826 | MODULE_PARM_DESC(max_queue, "max number of queued commands (1 to 255(def))"); |
c65b1445 | 2827 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); |
78d4e5a0 | 2828 | MODULE_PARM_DESC(no_uld, "stop ULD (e.g. sd driver) attaching (def=0))"); |
1da177e4 | 2829 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
c65b1445 | 2830 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
5b94e232 | 2831 | MODULE_PARM_DESC(opt_blks, "optimal transfer length in block (def=64)"); |
6f3cbf55 | 2832 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
5b94e232 | 2833 | MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)"); |
1da177e4 | 2834 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
d986788b | 2835 | MODULE_PARM_DESC(removable, "claim to have removable media (def=0)"); |
1da177e4 | 2836 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])"); |
ea61fca5 | 2837 | MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)"); |
5b94e232 MP |
2838 | MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)"); |
2839 | MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=1)"); | |
6014759c MP |
2840 | MODULE_PARM_DESC(unmap_max_blocks, "max # of blocks can be unmapped in one cmd (def=0xffffffff)"); |
2841 | MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=256)"); | |
5b94e232 MP |
2842 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); |
2843 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); | |
2844 | MODULE_PARM_DESC(write_same_length, "Maximum blocks per WRITE SAME cmd (def=0xffff)"); | |
1da177e4 LT |
2845 | |
2846 | static char sdebug_info[256]; | |
2847 | ||
2848 | static const char * scsi_debug_info(struct Scsi_Host * shp) | |
2849 | { | |
2850 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " | |
2851 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, | |
2852 | scsi_debug_version_date, scsi_debug_dev_size_mb, | |
2853 | scsi_debug_opts); | |
2854 | return sdebug_info; | |
2855 | } | |
2856 | ||
2857 | /* scsi_debug_proc_info | |
2858 | * Used if the driver currently has no own support for /proc/scsi | |
2859 | */ | |
c8ed555a | 2860 | static int scsi_debug_write_info(struct Scsi_Host *host, char *buffer, int length) |
1da177e4 | 2861 | { |
c8ed555a AV |
2862 | char arr[16]; |
2863 | int opts; | |
2864 | int minLen = length > 15 ? 15 : length; | |
1da177e4 | 2865 | |
c8ed555a AV |
2866 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
2867 | return -EACCES; | |
2868 | memcpy(arr, buffer, minLen); | |
2869 | arr[minLen] = '\0'; | |
2870 | if (1 != sscanf(arr, "%d", &opts)) | |
2871 | return -EINVAL; | |
2872 | scsi_debug_opts = opts; | |
2873 | if (scsi_debug_every_nth != 0) | |
2874 | scsi_debug_cmnd_count = 0; | |
2875 | return length; | |
2876 | } | |
1da177e4 | 2877 | |
c8ed555a AV |
2878 | static int scsi_debug_show_info(struct seq_file *m, struct Scsi_Host *host) |
2879 | { | |
2880 | seq_printf(m, "scsi_debug adapter driver, version " | |
1da177e4 LT |
2881 | "%s [%s]\n" |
2882 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " | |
2883 | "every_nth=%d(curr:%d)\n" | |
2884 | "delay=%d, max_luns=%d, scsi_level=%d\n" | |
2885 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" | |
2886 | "number of aborts=%d, device_reset=%d, bus_resets=%d, " | |
c6a44287 | 2887 | "host_resets=%d\ndix_reads=%d dix_writes=%d dif_errors=%d\n", |
1da177e4 LT |
2888 | SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, |
2889 | scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, | |
2890 | scsi_debug_cmnd_count, scsi_debug_delay, | |
2891 | scsi_debug_max_luns, scsi_debug_scsi_level, | |
597136ab MP |
2892 | scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads, |
2893 | sdebug_sectors_per, num_aborts, num_dev_resets, num_bus_resets, | |
c6a44287 | 2894 | num_host_resets, dix_reads, dix_writes, dif_errors); |
c8ed555a | 2895 | return 0; |
1da177e4 LT |
2896 | } |
2897 | ||
82069379 | 2898 | static ssize_t delay_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
2899 | { |
2900 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); | |
2901 | } | |
2902 | ||
82069379 AM |
2903 | static ssize_t delay_store(struct device_driver *ddp, const char *buf, |
2904 | size_t count) | |
1da177e4 LT |
2905 | { |
2906 | int delay; | |
2907 | char work[20]; | |
2908 | ||
2909 | if (1 == sscanf(buf, "%10s", work)) { | |
2910 | if ((1 == sscanf(work, "%d", &delay)) && (delay >= 0)) { | |
2911 | scsi_debug_delay = delay; | |
2912 | return count; | |
2913 | } | |
2914 | } | |
2915 | return -EINVAL; | |
2916 | } | |
82069379 | 2917 | static DRIVER_ATTR_RW(delay); |
1da177e4 | 2918 | |
82069379 | 2919 | static ssize_t opts_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
2920 | { |
2921 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); | |
2922 | } | |
2923 | ||
82069379 AM |
2924 | static ssize_t opts_store(struct device_driver *ddp, const char *buf, |
2925 | size_t count) | |
1da177e4 LT |
2926 | { |
2927 | int opts; | |
2928 | char work[20]; | |
2929 | ||
2930 | if (1 == sscanf(buf, "%10s", work)) { | |
2931 | if (0 == strnicmp(work,"0x", 2)) { | |
2932 | if (1 == sscanf(&work[2], "%x", &opts)) | |
2933 | goto opts_done; | |
2934 | } else { | |
2935 | if (1 == sscanf(work, "%d", &opts)) | |
2936 | goto opts_done; | |
2937 | } | |
2938 | } | |
2939 | return -EINVAL; | |
2940 | opts_done: | |
2941 | scsi_debug_opts = opts; | |
2942 | scsi_debug_cmnd_count = 0; | |
2943 | return count; | |
2944 | } | |
82069379 | 2945 | static DRIVER_ATTR_RW(opts); |
1da177e4 | 2946 | |
82069379 | 2947 | static ssize_t ptype_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
2948 | { |
2949 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); | |
2950 | } | |
82069379 AM |
2951 | static ssize_t ptype_store(struct device_driver *ddp, const char *buf, |
2952 | size_t count) | |
1da177e4 LT |
2953 | { |
2954 | int n; | |
2955 | ||
2956 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2957 | scsi_debug_ptype = n; | |
2958 | return count; | |
2959 | } | |
2960 | return -EINVAL; | |
2961 | } | |
82069379 | 2962 | static DRIVER_ATTR_RW(ptype); |
1da177e4 | 2963 | |
82069379 | 2964 | static ssize_t dsense_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
2965 | { |
2966 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); | |
2967 | } | |
82069379 AM |
2968 | static ssize_t dsense_store(struct device_driver *ddp, const char *buf, |
2969 | size_t count) | |
1da177e4 LT |
2970 | { |
2971 | int n; | |
2972 | ||
2973 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2974 | scsi_debug_dsense = n; | |
2975 | return count; | |
2976 | } | |
2977 | return -EINVAL; | |
2978 | } | |
82069379 | 2979 | static DRIVER_ATTR_RW(dsense); |
1da177e4 | 2980 | |
82069379 | 2981 | static ssize_t fake_rw_show(struct device_driver *ddp, char *buf) |
23183910 DG |
2982 | { |
2983 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); | |
2984 | } | |
82069379 AM |
2985 | static ssize_t fake_rw_store(struct device_driver *ddp, const char *buf, |
2986 | size_t count) | |
23183910 DG |
2987 | { |
2988 | int n; | |
2989 | ||
2990 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2991 | scsi_debug_fake_rw = n; | |
2992 | return count; | |
2993 | } | |
2994 | return -EINVAL; | |
2995 | } | |
82069379 | 2996 | static DRIVER_ATTR_RW(fake_rw); |
23183910 | 2997 | |
82069379 | 2998 | static ssize_t no_lun_0_show(struct device_driver *ddp, char *buf) |
c65b1445 DG |
2999 | { |
3000 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); | |
3001 | } | |
82069379 AM |
3002 | static ssize_t no_lun_0_store(struct device_driver *ddp, const char *buf, |
3003 | size_t count) | |
c65b1445 DG |
3004 | { |
3005 | int n; | |
3006 | ||
3007 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3008 | scsi_debug_no_lun_0 = n; | |
3009 | return count; | |
3010 | } | |
3011 | return -EINVAL; | |
3012 | } | |
82069379 | 3013 | static DRIVER_ATTR_RW(no_lun_0); |
c65b1445 | 3014 | |
82069379 | 3015 | static ssize_t num_tgts_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3016 | { |
3017 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); | |
3018 | } | |
82069379 AM |
3019 | static ssize_t num_tgts_store(struct device_driver *ddp, const char *buf, |
3020 | size_t count) | |
1da177e4 LT |
3021 | { |
3022 | int n; | |
3023 | ||
3024 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3025 | scsi_debug_num_tgts = n; | |
3026 | sdebug_max_tgts_luns(); | |
3027 | return count; | |
3028 | } | |
3029 | return -EINVAL; | |
3030 | } | |
82069379 | 3031 | static DRIVER_ATTR_RW(num_tgts); |
1da177e4 | 3032 | |
82069379 | 3033 | static ssize_t dev_size_mb_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3034 | { |
3035 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); | |
3036 | } | |
82069379 | 3037 | static DRIVER_ATTR_RO(dev_size_mb); |
1da177e4 | 3038 | |
82069379 | 3039 | static ssize_t num_parts_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3040 | { |
3041 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); | |
3042 | } | |
82069379 | 3043 | static DRIVER_ATTR_RO(num_parts); |
1da177e4 | 3044 | |
82069379 | 3045 | static ssize_t every_nth_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3046 | { |
3047 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); | |
3048 | } | |
82069379 AM |
3049 | static ssize_t every_nth_store(struct device_driver *ddp, const char *buf, |
3050 | size_t count) | |
1da177e4 LT |
3051 | { |
3052 | int nth; | |
3053 | ||
3054 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { | |
3055 | scsi_debug_every_nth = nth; | |
3056 | scsi_debug_cmnd_count = 0; | |
3057 | return count; | |
3058 | } | |
3059 | return -EINVAL; | |
3060 | } | |
82069379 | 3061 | static DRIVER_ATTR_RW(every_nth); |
1da177e4 | 3062 | |
82069379 | 3063 | static ssize_t max_luns_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3064 | { |
3065 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); | |
3066 | } | |
82069379 AM |
3067 | static ssize_t max_luns_store(struct device_driver *ddp, const char *buf, |
3068 | size_t count) | |
1da177e4 LT |
3069 | { |
3070 | int n; | |
3071 | ||
3072 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3073 | scsi_debug_max_luns = n; | |
3074 | sdebug_max_tgts_luns(); | |
3075 | return count; | |
3076 | } | |
3077 | return -EINVAL; | |
3078 | } | |
82069379 | 3079 | static DRIVER_ATTR_RW(max_luns); |
1da177e4 | 3080 | |
82069379 | 3081 | static ssize_t max_queue_show(struct device_driver *ddp, char *buf) |
78d4e5a0 DG |
3082 | { |
3083 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_queue); | |
3084 | } | |
82069379 AM |
3085 | static ssize_t max_queue_store(struct device_driver *ddp, const char *buf, |
3086 | size_t count) | |
78d4e5a0 DG |
3087 | { |
3088 | int n; | |
3089 | ||
3090 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n > 0) && | |
3091 | (n <= SCSI_DEBUG_CANQUEUE)) { | |
3092 | scsi_debug_max_queue = n; | |
3093 | return count; | |
3094 | } | |
3095 | return -EINVAL; | |
3096 | } | |
82069379 | 3097 | static DRIVER_ATTR_RW(max_queue); |
78d4e5a0 | 3098 | |
82069379 | 3099 | static ssize_t no_uld_show(struct device_driver *ddp, char *buf) |
78d4e5a0 DG |
3100 | { |
3101 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_uld); | |
3102 | } | |
82069379 | 3103 | static DRIVER_ATTR_RO(no_uld); |
78d4e5a0 | 3104 | |
82069379 | 3105 | static ssize_t scsi_level_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3106 | { |
3107 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); | |
3108 | } | |
82069379 | 3109 | static DRIVER_ATTR_RO(scsi_level); |
1da177e4 | 3110 | |
82069379 | 3111 | static ssize_t virtual_gb_show(struct device_driver *ddp, char *buf) |
c65b1445 DG |
3112 | { |
3113 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); | |
3114 | } | |
82069379 AM |
3115 | static ssize_t virtual_gb_store(struct device_driver *ddp, const char *buf, |
3116 | size_t count) | |
c65b1445 DG |
3117 | { |
3118 | int n; | |
3119 | ||
3120 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3121 | scsi_debug_virtual_gb = n; | |
28898873 FT |
3122 | |
3123 | sdebug_capacity = get_sdebug_capacity(); | |
3124 | ||
c65b1445 DG |
3125 | return count; |
3126 | } | |
3127 | return -EINVAL; | |
3128 | } | |
82069379 | 3129 | static DRIVER_ATTR_RW(virtual_gb); |
c65b1445 | 3130 | |
82069379 | 3131 | static ssize_t add_host_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3132 | { |
3133 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); | |
3134 | } | |
3135 | ||
82069379 AM |
3136 | static ssize_t add_host_store(struct device_driver *ddp, const char *buf, |
3137 | size_t count) | |
1da177e4 | 3138 | { |
f3df41cf | 3139 | int delta_hosts; |
1da177e4 | 3140 | |
f3df41cf | 3141 | if (sscanf(buf, "%d", &delta_hosts) != 1) |
1da177e4 | 3142 | return -EINVAL; |
1da177e4 LT |
3143 | if (delta_hosts > 0) { |
3144 | do { | |
3145 | sdebug_add_adapter(); | |
3146 | } while (--delta_hosts); | |
3147 | } else if (delta_hosts < 0) { | |
3148 | do { | |
3149 | sdebug_remove_adapter(); | |
3150 | } while (++delta_hosts); | |
3151 | } | |
3152 | return count; | |
3153 | } | |
82069379 | 3154 | static DRIVER_ATTR_RW(add_host); |
1da177e4 | 3155 | |
82069379 | 3156 | static ssize_t vpd_use_hostno_show(struct device_driver *ddp, char *buf) |
23183910 DG |
3157 | { |
3158 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); | |
3159 | } | |
82069379 AM |
3160 | static ssize_t vpd_use_hostno_store(struct device_driver *ddp, const char *buf, |
3161 | size_t count) | |
23183910 DG |
3162 | { |
3163 | int n; | |
3164 | ||
3165 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3166 | scsi_debug_vpd_use_hostno = n; | |
3167 | return count; | |
3168 | } | |
3169 | return -EINVAL; | |
3170 | } | |
82069379 | 3171 | static DRIVER_ATTR_RW(vpd_use_hostno); |
23183910 | 3172 | |
82069379 | 3173 | static ssize_t sector_size_show(struct device_driver *ddp, char *buf) |
597136ab MP |
3174 | { |
3175 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_sector_size); | |
3176 | } | |
82069379 | 3177 | static DRIVER_ATTR_RO(sector_size); |
597136ab | 3178 | |
82069379 | 3179 | static ssize_t dix_show(struct device_driver *ddp, char *buf) |
c6a44287 MP |
3180 | { |
3181 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dix); | |
3182 | } | |
82069379 | 3183 | static DRIVER_ATTR_RO(dix); |
c6a44287 | 3184 | |
82069379 | 3185 | static ssize_t dif_show(struct device_driver *ddp, char *buf) |
c6a44287 MP |
3186 | { |
3187 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dif); | |
3188 | } | |
82069379 | 3189 | static DRIVER_ATTR_RO(dif); |
c6a44287 | 3190 | |
82069379 | 3191 | static ssize_t guard_show(struct device_driver *ddp, char *buf) |
c6a44287 | 3192 | { |
68aee7ba | 3193 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_guard); |
c6a44287 | 3194 | } |
82069379 | 3195 | static DRIVER_ATTR_RO(guard); |
c6a44287 | 3196 | |
82069379 | 3197 | static ssize_t ato_show(struct device_driver *ddp, char *buf) |
c6a44287 MP |
3198 | { |
3199 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ato); | |
3200 | } | |
82069379 | 3201 | static DRIVER_ATTR_RO(ato); |
c6a44287 | 3202 | |
82069379 | 3203 | static ssize_t map_show(struct device_driver *ddp, char *buf) |
44d92694 MP |
3204 | { |
3205 | ssize_t count; | |
3206 | ||
5b94e232 | 3207 | if (!scsi_debug_lbp()) |
44d92694 MP |
3208 | return scnprintf(buf, PAGE_SIZE, "0-%u\n", |
3209 | sdebug_store_sectors); | |
3210 | ||
3211 | count = bitmap_scnlistprintf(buf, PAGE_SIZE, map_storep, map_size); | |
3212 | ||
3213 | buf[count++] = '\n'; | |
3214 | buf[count++] = 0; | |
3215 | ||
3216 | return count; | |
3217 | } | |
82069379 | 3218 | static DRIVER_ATTR_RO(map); |
44d92694 | 3219 | |
82069379 | 3220 | static ssize_t removable_show(struct device_driver *ddp, char *buf) |
d986788b MP |
3221 | { |
3222 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_removable ? 1 : 0); | |
3223 | } | |
82069379 AM |
3224 | static ssize_t removable_store(struct device_driver *ddp, const char *buf, |
3225 | size_t count) | |
d986788b MP |
3226 | { |
3227 | int n; | |
3228 | ||
3229 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3230 | scsi_debug_removable = (n > 0); | |
3231 | return count; | |
3232 | } | |
3233 | return -EINVAL; | |
3234 | } | |
82069379 | 3235 | static DRIVER_ATTR_RW(removable); |
d986788b | 3236 | |
82069379 | 3237 | /* Note: The following array creates attribute files in the |
23183910 DG |
3238 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these |
3239 | files (over those found in the /sys/module/scsi_debug/parameters | |
3240 | directory) is that auxiliary actions can be triggered when an attribute | |
3241 | is changed. For example see: sdebug_add_host_store() above. | |
3242 | */ | |
6ecaff7f | 3243 | |
82069379 AM |
3244 | static struct attribute *sdebug_drv_attrs[] = { |
3245 | &driver_attr_delay.attr, | |
3246 | &driver_attr_opts.attr, | |
3247 | &driver_attr_ptype.attr, | |
3248 | &driver_attr_dsense.attr, | |
3249 | &driver_attr_fake_rw.attr, | |
3250 | &driver_attr_no_lun_0.attr, | |
3251 | &driver_attr_num_tgts.attr, | |
3252 | &driver_attr_dev_size_mb.attr, | |
3253 | &driver_attr_num_parts.attr, | |
3254 | &driver_attr_every_nth.attr, | |
3255 | &driver_attr_max_luns.attr, | |
3256 | &driver_attr_max_queue.attr, | |
3257 | &driver_attr_no_uld.attr, | |
3258 | &driver_attr_scsi_level.attr, | |
3259 | &driver_attr_virtual_gb.attr, | |
3260 | &driver_attr_add_host.attr, | |
3261 | &driver_attr_vpd_use_hostno.attr, | |
3262 | &driver_attr_sector_size.attr, | |
3263 | &driver_attr_dix.attr, | |
3264 | &driver_attr_dif.attr, | |
3265 | &driver_attr_guard.attr, | |
3266 | &driver_attr_ato.attr, | |
3267 | &driver_attr_map.attr, | |
3268 | &driver_attr_removable.attr, | |
3269 | NULL, | |
3270 | }; | |
3271 | ATTRIBUTE_GROUPS(sdebug_drv); | |
1da177e4 | 3272 | |
11ddceca | 3273 | static struct device *pseudo_primary; |
8dea0d02 | 3274 | |
1da177e4 LT |
3275 | static int __init scsi_debug_init(void) |
3276 | { | |
5f2578e5 | 3277 | unsigned long sz; |
1da177e4 LT |
3278 | int host_to_add; |
3279 | int k; | |
6ecaff7f | 3280 | int ret; |
1da177e4 | 3281 | |
597136ab MP |
3282 | switch (scsi_debug_sector_size) { |
3283 | case 512: | |
3284 | case 1024: | |
3285 | case 2048: | |
3286 | case 4096: | |
3287 | break; | |
3288 | default: | |
c6a44287 | 3289 | printk(KERN_ERR "scsi_debug_init: invalid sector_size %d\n", |
597136ab MP |
3290 | scsi_debug_sector_size); |
3291 | return -EINVAL; | |
3292 | } | |
3293 | ||
c6a44287 MP |
3294 | switch (scsi_debug_dif) { |
3295 | ||
3296 | case SD_DIF_TYPE0_PROTECTION: | |
3297 | case SD_DIF_TYPE1_PROTECTION: | |
395cef03 | 3298 | case SD_DIF_TYPE2_PROTECTION: |
c6a44287 MP |
3299 | case SD_DIF_TYPE3_PROTECTION: |
3300 | break; | |
3301 | ||
3302 | default: | |
395cef03 | 3303 | printk(KERN_ERR "scsi_debug_init: dif must be 0, 1, 2 or 3\n"); |
c6a44287 MP |
3304 | return -EINVAL; |
3305 | } | |
3306 | ||
3307 | if (scsi_debug_guard > 1) { | |
3308 | printk(KERN_ERR "scsi_debug_init: guard must be 0 or 1\n"); | |
3309 | return -EINVAL; | |
3310 | } | |
3311 | ||
3312 | if (scsi_debug_ato > 1) { | |
3313 | printk(KERN_ERR "scsi_debug_init: ato must be 0 or 1\n"); | |
3314 | return -EINVAL; | |
3315 | } | |
3316 | ||
ea61fca5 MP |
3317 | if (scsi_debug_physblk_exp > 15) { |
3318 | printk(KERN_ERR "scsi_debug_init: invalid physblk_exp %u\n", | |
3319 | scsi_debug_physblk_exp); | |
3320 | return -EINVAL; | |
3321 | } | |
3322 | ||
3323 | if (scsi_debug_lowest_aligned > 0x3fff) { | |
3324 | printk(KERN_ERR "scsi_debug_init: lowest_aligned too big: %u\n", | |
3325 | scsi_debug_lowest_aligned); | |
3326 | return -EINVAL; | |
3327 | } | |
3328 | ||
1da177e4 LT |
3329 | if (scsi_debug_dev_size_mb < 1) |
3330 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ | |
5f2578e5 | 3331 | sz = (unsigned long)scsi_debug_dev_size_mb * 1048576; |
597136ab | 3332 | sdebug_store_sectors = sz / scsi_debug_sector_size; |
28898873 | 3333 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 LT |
3334 | |
3335 | /* play around with geometry, don't waste too much on track 0 */ | |
3336 | sdebug_heads = 8; | |
3337 | sdebug_sectors_per = 32; | |
3338 | if (scsi_debug_dev_size_mb >= 16) | |
3339 | sdebug_heads = 32; | |
3340 | else if (scsi_debug_dev_size_mb >= 256) | |
3341 | sdebug_heads = 64; | |
3342 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
3343 | (sdebug_sectors_per * sdebug_heads); | |
3344 | if (sdebug_cylinders_per >= 1024) { | |
3345 | /* other LLDs do this; implies >= 1GB ram disk ... */ | |
3346 | sdebug_heads = 255; | |
3347 | sdebug_sectors_per = 63; | |
3348 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
3349 | (sdebug_sectors_per * sdebug_heads); | |
3350 | } | |
3351 | ||
1da177e4 LT |
3352 | fake_storep = vmalloc(sz); |
3353 | if (NULL == fake_storep) { | |
3354 | printk(KERN_ERR "scsi_debug_init: out of memory, 1\n"); | |
3355 | return -ENOMEM; | |
3356 | } | |
3357 | memset(fake_storep, 0, sz); | |
3358 | if (scsi_debug_num_parts > 0) | |
f58b0efb | 3359 | sdebug_build_parts(fake_storep, sz); |
1da177e4 | 3360 | |
7cb69d03 | 3361 | if (scsi_debug_dix) { |
c6a44287 MP |
3362 | int dif_size; |
3363 | ||
3364 | dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple); | |
3365 | dif_storep = vmalloc(dif_size); | |
3366 | ||
3367 | printk(KERN_ERR "scsi_debug_init: dif_storep %u bytes @ %p\n", | |
3368 | dif_size, dif_storep); | |
3369 | ||
3370 | if (dif_storep == NULL) { | |
3371 | printk(KERN_ERR "scsi_debug_init: out of mem. (DIX)\n"); | |
3372 | ret = -ENOMEM; | |
3373 | goto free_vm; | |
3374 | } | |
3375 | ||
3376 | memset(dif_storep, 0xff, dif_size); | |
3377 | } | |
3378 | ||
5b94e232 MP |
3379 | /* Logical Block Provisioning */ |
3380 | if (scsi_debug_lbp()) { | |
6014759c MP |
3381 | scsi_debug_unmap_max_blocks = |
3382 | clamp(scsi_debug_unmap_max_blocks, 0U, 0xffffffffU); | |
3383 | ||
3384 | scsi_debug_unmap_max_desc = | |
3385 | clamp(scsi_debug_unmap_max_desc, 0U, 256U); | |
3386 | ||
3387 | scsi_debug_unmap_granularity = | |
3388 | clamp(scsi_debug_unmap_granularity, 1U, 0xffffffffU); | |
3389 | ||
3390 | if (scsi_debug_unmap_alignment && | |
ac17078a AM |
3391 | scsi_debug_unmap_granularity <= |
3392 | scsi_debug_unmap_alignment) { | |
44d92694 | 3393 | printk(KERN_ERR |
ac17078a | 3394 | "%s: ERR: unmap_granularity <= unmap_alignment\n", |
44d92694 MP |
3395 | __func__); |
3396 | return -EINVAL; | |
3397 | } | |
3398 | ||
b90ebc3d AM |
3399 | map_size = lba_to_map_index(sdebug_store_sectors - 1) + 1; |
3400 | map_storep = vmalloc(BITS_TO_LONGS(map_size) * sizeof(long)); | |
44d92694 MP |
3401 | |
3402 | printk(KERN_INFO "scsi_debug_init: %lu provisioning blocks\n", | |
3403 | map_size); | |
3404 | ||
3405 | if (map_storep == NULL) { | |
3406 | printk(KERN_ERR "scsi_debug_init: out of mem. (MAP)\n"); | |
3407 | ret = -ENOMEM; | |
3408 | goto free_vm; | |
3409 | } | |
3410 | ||
b90ebc3d | 3411 | bitmap_zero(map_storep, map_size); |
44d92694 MP |
3412 | |
3413 | /* Map first 1KB for partition table */ | |
3414 | if (scsi_debug_num_parts) | |
3415 | map_region(0, 2); | |
3416 | } | |
3417 | ||
9b906779 NB |
3418 | pseudo_primary = root_device_register("pseudo_0"); |
3419 | if (IS_ERR(pseudo_primary)) { | |
3420 | printk(KERN_WARNING "scsi_debug: root_device_register() error\n"); | |
3421 | ret = PTR_ERR(pseudo_primary); | |
6ecaff7f RD |
3422 | goto free_vm; |
3423 | } | |
3424 | ret = bus_register(&pseudo_lld_bus); | |
3425 | if (ret < 0) { | |
3426 | printk(KERN_WARNING "scsi_debug: bus_register error: %d\n", | |
3427 | ret); | |
3428 | goto dev_unreg; | |
3429 | } | |
3430 | ret = driver_register(&sdebug_driverfs_driver); | |
3431 | if (ret < 0) { | |
3432 | printk(KERN_WARNING "scsi_debug: driver_register error: %d\n", | |
3433 | ret); | |
3434 | goto bus_unreg; | |
3435 | } | |
1da177e4 | 3436 | |
6ecaff7f | 3437 | init_all_queued(); |
1da177e4 | 3438 | |
1da177e4 LT |
3439 | host_to_add = scsi_debug_add_host; |
3440 | scsi_debug_add_host = 0; | |
3441 | ||
3442 | for (k = 0; k < host_to_add; k++) { | |
3443 | if (sdebug_add_adapter()) { | |
3444 | printk(KERN_ERR "scsi_debug_init: " | |
3445 | "sdebug_add_adapter failed k=%d\n", k); | |
3446 | break; | |
3447 | } | |
3448 | } | |
3449 | ||
3450 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
3451 | printk(KERN_INFO "scsi_debug_init: built %d host(s)\n", | |
3452 | scsi_debug_add_host); | |
3453 | } | |
3454 | return 0; | |
6ecaff7f | 3455 | |
6ecaff7f RD |
3456 | bus_unreg: |
3457 | bus_unregister(&pseudo_lld_bus); | |
3458 | dev_unreg: | |
9b906779 | 3459 | root_device_unregister(pseudo_primary); |
6ecaff7f | 3460 | free_vm: |
44d92694 MP |
3461 | if (map_storep) |
3462 | vfree(map_storep); | |
c6a44287 MP |
3463 | if (dif_storep) |
3464 | vfree(dif_storep); | |
6ecaff7f RD |
3465 | vfree(fake_storep); |
3466 | ||
3467 | return ret; | |
1da177e4 LT |
3468 | } |
3469 | ||
3470 | static void __exit scsi_debug_exit(void) | |
3471 | { | |
3472 | int k = scsi_debug_add_host; | |
3473 | ||
3474 | stop_all_queued(); | |
3475 | for (; k; k--) | |
3476 | sdebug_remove_adapter(); | |
1da177e4 LT |
3477 | driver_unregister(&sdebug_driverfs_driver); |
3478 | bus_unregister(&pseudo_lld_bus); | |
9b906779 | 3479 | root_device_unregister(pseudo_primary); |
1da177e4 | 3480 | |
c6a44287 MP |
3481 | if (dif_storep) |
3482 | vfree(dif_storep); | |
3483 | ||
1da177e4 LT |
3484 | vfree(fake_storep); |
3485 | } | |
3486 | ||
3487 | device_initcall(scsi_debug_init); | |
3488 | module_exit(scsi_debug_exit); | |
3489 | ||
1da177e4 LT |
3490 | static void sdebug_release_adapter(struct device * dev) |
3491 | { | |
3492 | struct sdebug_host_info *sdbg_host; | |
3493 | ||
3494 | sdbg_host = to_sdebug_host(dev); | |
3495 | kfree(sdbg_host); | |
3496 | } | |
3497 | ||
3498 | static int sdebug_add_adapter(void) | |
3499 | { | |
3500 | int k, devs_per_host; | |
3501 | int error = 0; | |
3502 | struct sdebug_host_info *sdbg_host; | |
8b40228f | 3503 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 | 3504 | |
c65b1445 | 3505 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
1da177e4 LT |
3506 | if (NULL == sdbg_host) { |
3507 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
cadbd4a5 | 3508 | __func__, __LINE__); |
1da177e4 LT |
3509 | return -ENOMEM; |
3510 | } | |
3511 | ||
1da177e4 LT |
3512 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
3513 | ||
3514 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; | |
3515 | for (k = 0; k < devs_per_host; k++) { | |
5cb2fc06 FT |
3516 | sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); |
3517 | if (!sdbg_devinfo) { | |
1da177e4 | 3518 | printk(KERN_ERR "%s: out of memory at line %d\n", |
cadbd4a5 | 3519 | __func__, __LINE__); |
1da177e4 LT |
3520 | error = -ENOMEM; |
3521 | goto clean; | |
3522 | } | |
1da177e4 LT |
3523 | } |
3524 | ||
3525 | spin_lock(&sdebug_host_list_lock); | |
3526 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); | |
3527 | spin_unlock(&sdebug_host_list_lock); | |
3528 | ||
3529 | sdbg_host->dev.bus = &pseudo_lld_bus; | |
9b906779 | 3530 | sdbg_host->dev.parent = pseudo_primary; |
1da177e4 | 3531 | sdbg_host->dev.release = &sdebug_release_adapter; |
71610f55 | 3532 | dev_set_name(&sdbg_host->dev, "adapter%d", scsi_debug_add_host); |
1da177e4 LT |
3533 | |
3534 | error = device_register(&sdbg_host->dev); | |
3535 | ||
3536 | if (error) | |
3537 | goto clean; | |
3538 | ||
3539 | ++scsi_debug_add_host; | |
3540 | return error; | |
3541 | ||
3542 | clean: | |
8b40228f FT |
3543 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
3544 | dev_list) { | |
1da177e4 LT |
3545 | list_del(&sdbg_devinfo->dev_list); |
3546 | kfree(sdbg_devinfo); | |
3547 | } | |
3548 | ||
3549 | kfree(sdbg_host); | |
3550 | return error; | |
3551 | } | |
3552 | ||
3553 | static void sdebug_remove_adapter(void) | |
3554 | { | |
3555 | struct sdebug_host_info * sdbg_host = NULL; | |
3556 | ||
3557 | spin_lock(&sdebug_host_list_lock); | |
3558 | if (!list_empty(&sdebug_host_list)) { | |
3559 | sdbg_host = list_entry(sdebug_host_list.prev, | |
3560 | struct sdebug_host_info, host_list); | |
3561 | list_del(&sdbg_host->host_list); | |
3562 | } | |
3563 | spin_unlock(&sdebug_host_list_lock); | |
3564 | ||
3565 | if (!sdbg_host) | |
3566 | return; | |
3567 | ||
3568 | device_unregister(&sdbg_host->dev); | |
3569 | --scsi_debug_add_host; | |
3570 | } | |
3571 | ||
639db475 | 3572 | static |
f281233d | 3573 | int scsi_debug_queuecommand_lck(struct scsi_cmnd *SCpnt, done_funct_t done) |
639db475 FT |
3574 | { |
3575 | unsigned char *cmd = (unsigned char *) SCpnt->cmnd; | |
3576 | int len, k; | |
3577 | unsigned int num; | |
3578 | unsigned long long lba; | |
395cef03 | 3579 | u32 ei_lba; |
639db475 FT |
3580 | int errsts = 0; |
3581 | int target = SCpnt->device->id; | |
3582 | struct sdebug_dev_info *devip = NULL; | |
3583 | int inj_recovered = 0; | |
3584 | int inj_transport = 0; | |
c6a44287 MP |
3585 | int inj_dif = 0; |
3586 | int inj_dix = 0; | |
b57d7c01 | 3587 | int inj_short = 0; |
639db475 | 3588 | int delay_override = 0; |
44d92694 | 3589 | int unmap = 0; |
639db475 FT |
3590 | |
3591 | scsi_set_resid(SCpnt, 0); | |
3592 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { | |
3593 | printk(KERN_INFO "scsi_debug: cmd "); | |
3594 | for (k = 0, len = SCpnt->cmd_len; k < len; ++k) | |
3595 | printk("%02x ", (int)cmd[k]); | |
3596 | printk("\n"); | |
3597 | } | |
3598 | ||
3599 | if (target == SCpnt->device->host->hostt->this_id) { | |
3600 | printk(KERN_INFO "scsi_debug: initiator's id used as " | |
3601 | "target!\n"); | |
3602 | return schedule_resp(SCpnt, NULL, done, | |
3603 | DID_NO_CONNECT << 16, 0); | |
3604 | } | |
3605 | ||
3606 | if ((SCpnt->device->lun >= scsi_debug_max_luns) && | |
3607 | (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) | |
3608 | return schedule_resp(SCpnt, NULL, done, | |
3609 | DID_NO_CONNECT << 16, 0); | |
3610 | devip = devInfoReg(SCpnt->device); | |
3611 | if (NULL == devip) | |
3612 | return schedule_resp(SCpnt, NULL, done, | |
3613 | DID_NO_CONNECT << 16, 0); | |
3614 | ||
3615 | if ((scsi_debug_every_nth != 0) && | |
3616 | (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { | |
3617 | scsi_debug_cmnd_count = 0; | |
3618 | if (scsi_debug_every_nth < -1) | |
3619 | scsi_debug_every_nth = -1; | |
3620 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) | |
3621 | return 0; /* ignore command causing timeout */ | |
18a4d0a2 MP |
3622 | else if (SCSI_DEBUG_OPT_MAC_TIMEOUT & scsi_debug_opts && |
3623 | scsi_medium_access_command(SCpnt)) | |
3624 | return 0; /* time out reads and writes */ | |
639db475 FT |
3625 | else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) |
3626 | inj_recovered = 1; /* to reads and writes below */ | |
3627 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts) | |
3628 | inj_transport = 1; /* to reads and writes below */ | |
c6a44287 MP |
3629 | else if (SCSI_DEBUG_OPT_DIF_ERR & scsi_debug_opts) |
3630 | inj_dif = 1; /* to reads and writes below */ | |
3631 | else if (SCSI_DEBUG_OPT_DIX_ERR & scsi_debug_opts) | |
3632 | inj_dix = 1; /* to reads and writes below */ | |
b57d7c01 CH |
3633 | else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & scsi_debug_opts) |
3634 | inj_short = 1; | |
639db475 FT |
3635 | } |
3636 | ||
3637 | if (devip->wlun) { | |
3638 | switch (*cmd) { | |
3639 | case INQUIRY: | |
3640 | case REQUEST_SENSE: | |
3641 | case TEST_UNIT_READY: | |
3642 | case REPORT_LUNS: | |
3643 | break; /* only allowable wlun commands */ | |
3644 | default: | |
3645 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
3646 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x " | |
3647 | "not supported for wlun\n", *cmd); | |
3648 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
3649 | INVALID_OPCODE, 0); | |
3650 | errsts = check_condition_result; | |
3651 | return schedule_resp(SCpnt, devip, done, errsts, | |
3652 | 0); | |
3653 | } | |
3654 | } | |
3655 | ||
3656 | switch (*cmd) { | |
3657 | case INQUIRY: /* mandatory, ignore unit attention */ | |
3658 | delay_override = 1; | |
3659 | errsts = resp_inquiry(SCpnt, target, devip); | |
3660 | break; | |
3661 | case REQUEST_SENSE: /* mandatory, ignore unit attention */ | |
3662 | delay_override = 1; | |
3663 | errsts = resp_requests(SCpnt, devip); | |
3664 | break; | |
3665 | case REZERO_UNIT: /* actually this is REWIND for SSC */ | |
3666 | case START_STOP: | |
3667 | errsts = resp_start_stop(SCpnt, devip); | |
3668 | break; | |
3669 | case ALLOW_MEDIUM_REMOVAL: | |
3670 | errsts = check_readiness(SCpnt, 1, devip); | |
3671 | if (errsts) | |
3672 | break; | |
3673 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
3674 | printk(KERN_INFO "scsi_debug: Medium removal %s\n", | |
3675 | cmd[4] ? "inhibited" : "enabled"); | |
3676 | break; | |
3677 | case SEND_DIAGNOSTIC: /* mandatory */ | |
3678 | errsts = check_readiness(SCpnt, 1, devip); | |
3679 | break; | |
3680 | case TEST_UNIT_READY: /* mandatory */ | |
3681 | delay_override = 1; | |
3682 | errsts = check_readiness(SCpnt, 0, devip); | |
3683 | break; | |
3684 | case RESERVE: | |
3685 | errsts = check_readiness(SCpnt, 1, devip); | |
3686 | break; | |
3687 | case RESERVE_10: | |
3688 | errsts = check_readiness(SCpnt, 1, devip); | |
3689 | break; | |
3690 | case RELEASE: | |
3691 | errsts = check_readiness(SCpnt, 1, devip); | |
3692 | break; | |
3693 | case RELEASE_10: | |
3694 | errsts = check_readiness(SCpnt, 1, devip); | |
3695 | break; | |
3696 | case READ_CAPACITY: | |
3697 | errsts = resp_readcap(SCpnt, devip); | |
3698 | break; | |
3699 | case SERVICE_ACTION_IN: | |
44d92694 MP |
3700 | if (cmd[1] == SAI_READ_CAPACITY_16) |
3701 | errsts = resp_readcap16(SCpnt, devip); | |
3702 | else if (cmd[1] == SAI_GET_LBA_STATUS) { | |
3703 | ||
5b94e232 | 3704 | if (scsi_debug_lbp() == 0) { |
44d92694 MP |
3705 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
3706 | INVALID_COMMAND_OPCODE, 0); | |
3707 | errsts = check_condition_result; | |
3708 | } else | |
3709 | errsts = resp_get_lba_status(SCpnt, devip); | |
3710 | } else { | |
639db475 FT |
3711 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
3712 | INVALID_OPCODE, 0); | |
3713 | errsts = check_condition_result; | |
639db475 | 3714 | } |
639db475 FT |
3715 | break; |
3716 | case MAINTENANCE_IN: | |
3717 | if (MI_REPORT_TARGET_PGS != cmd[1]) { | |
3718 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
3719 | INVALID_OPCODE, 0); | |
3720 | errsts = check_condition_result; | |
3721 | break; | |
3722 | } | |
3723 | errsts = resp_report_tgtpgs(SCpnt, devip); | |
3724 | break; | |
3725 | case READ_16: | |
3726 | case READ_12: | |
3727 | case READ_10: | |
395cef03 MP |
3728 | /* READ{10,12,16} and DIF Type 2 are natural enemies */ |
3729 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
3730 | cmd[1] & 0xe0) { | |
3731 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
3732 | INVALID_COMMAND_OPCODE, 0); | |
3733 | errsts = check_condition_result; | |
3734 | break; | |
3735 | } | |
3736 | ||
3737 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || | |
3738 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && | |
3739 | (cmd[1] & 0xe0) == 0) | |
3740 | printk(KERN_ERR "Unprotected RD/WR to DIF device\n"); | |
3741 | ||
3742 | /* fall through */ | |
639db475 | 3743 | case READ_6: |
395cef03 | 3744 | read: |
639db475 FT |
3745 | errsts = check_readiness(SCpnt, 0, devip); |
3746 | if (errsts) | |
3747 | break; | |
3748 | if (scsi_debug_fake_rw) | |
3749 | break; | |
395cef03 | 3750 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
b57d7c01 CH |
3751 | |
3752 | if (inj_short) | |
3753 | num /= 2; | |
3754 | ||
395cef03 | 3755 | errsts = resp_read(SCpnt, lba, num, devip, ei_lba); |
639db475 FT |
3756 | if (inj_recovered && (0 == errsts)) { |
3757 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
3758 | THRESHOLD_EXCEEDED, 0); | |
3759 | errsts = check_condition_result; | |
3760 | } else if (inj_transport && (0 == errsts)) { | |
3761 | mk_sense_buffer(devip, ABORTED_COMMAND, | |
3762 | TRANSPORT_PROBLEM, ACK_NAK_TO); | |
3763 | errsts = check_condition_result; | |
c6a44287 MP |
3764 | } else if (inj_dif && (0 == errsts)) { |
3765 | mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1); | |
3766 | errsts = illegal_condition_result; | |
3767 | } else if (inj_dix && (0 == errsts)) { | |
3768 | mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1); | |
3769 | errsts = illegal_condition_result; | |
639db475 FT |
3770 | } |
3771 | break; | |
3772 | case REPORT_LUNS: /* mandatory, ignore unit attention */ | |
3773 | delay_override = 1; | |
3774 | errsts = resp_report_luns(SCpnt, devip); | |
3775 | break; | |
3776 | case VERIFY: /* 10 byte SBC-2 command */ | |
3777 | errsts = check_readiness(SCpnt, 0, devip); | |
3778 | break; | |
3779 | case WRITE_16: | |
3780 | case WRITE_12: | |
3781 | case WRITE_10: | |
395cef03 MP |
3782 | /* WRITE{10,12,16} and DIF Type 2 are natural enemies */ |
3783 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
3784 | cmd[1] & 0xe0) { | |
3785 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
3786 | INVALID_COMMAND_OPCODE, 0); | |
3787 | errsts = check_condition_result; | |
3788 | break; | |
3789 | } | |
3790 | ||
3791 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || | |
3792 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && | |
3793 | (cmd[1] & 0xe0) == 0) | |
3794 | printk(KERN_ERR "Unprotected RD/WR to DIF device\n"); | |
3795 | ||
3796 | /* fall through */ | |
639db475 | 3797 | case WRITE_6: |
395cef03 | 3798 | write: |
639db475 FT |
3799 | errsts = check_readiness(SCpnt, 0, devip); |
3800 | if (errsts) | |
3801 | break; | |
3802 | if (scsi_debug_fake_rw) | |
3803 | break; | |
395cef03 MP |
3804 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
3805 | errsts = resp_write(SCpnt, lba, num, devip, ei_lba); | |
639db475 FT |
3806 | if (inj_recovered && (0 == errsts)) { |
3807 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
3808 | THRESHOLD_EXCEEDED, 0); | |
3809 | errsts = check_condition_result; | |
c6a44287 MP |
3810 | } else if (inj_dif && (0 == errsts)) { |
3811 | mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1); | |
3812 | errsts = illegal_condition_result; | |
3813 | } else if (inj_dix && (0 == errsts)) { | |
3814 | mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1); | |
3815 | errsts = illegal_condition_result; | |
639db475 FT |
3816 | } |
3817 | break; | |
44d92694 | 3818 | case WRITE_SAME_16: |
5b94e232 | 3819 | case WRITE_SAME: |
6014759c | 3820 | if (cmd[1] & 0x8) { |
5b94e232 MP |
3821 | if ((*cmd == WRITE_SAME_16 && scsi_debug_lbpws == 0) || |
3822 | (*cmd == WRITE_SAME && scsi_debug_lbpws10 == 0)) { | |
6014759c MP |
3823 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
3824 | INVALID_FIELD_IN_CDB, 0); | |
3825 | errsts = check_condition_result; | |
3826 | } else | |
3827 | unmap = 1; | |
3828 | } | |
3829 | if (errsts) | |
3830 | break; | |
44d92694 MP |
3831 | errsts = check_readiness(SCpnt, 0, devip); |
3832 | if (errsts) | |
3833 | break; | |
3834 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); | |
3835 | errsts = resp_write_same(SCpnt, lba, num, devip, ei_lba, unmap); | |
3836 | break; | |
3837 | case UNMAP: | |
3838 | errsts = check_readiness(SCpnt, 0, devip); | |
3839 | if (errsts) | |
3840 | break; | |
3841 | ||
5b94e232 | 3842 | if (scsi_debug_unmap_max_desc == 0 || scsi_debug_lbpu == 0) { |
44d92694 MP |
3843 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
3844 | INVALID_COMMAND_OPCODE, 0); | |
3845 | errsts = check_condition_result; | |
3846 | } else | |
3847 | errsts = resp_unmap(SCpnt, devip); | |
3848 | break; | |
639db475 FT |
3849 | case MODE_SENSE: |
3850 | case MODE_SENSE_10: | |
3851 | errsts = resp_mode_sense(SCpnt, target, devip); | |
3852 | break; | |
3853 | case MODE_SELECT: | |
3854 | errsts = resp_mode_select(SCpnt, 1, devip); | |
3855 | break; | |
3856 | case MODE_SELECT_10: | |
3857 | errsts = resp_mode_select(SCpnt, 0, devip); | |
3858 | break; | |
3859 | case LOG_SENSE: | |
3860 | errsts = resp_log_sense(SCpnt, devip); | |
3861 | break; | |
3862 | case SYNCHRONIZE_CACHE: | |
3863 | delay_override = 1; | |
3864 | errsts = check_readiness(SCpnt, 0, devip); | |
3865 | break; | |
3866 | case WRITE_BUFFER: | |
3867 | errsts = check_readiness(SCpnt, 1, devip); | |
3868 | break; | |
3869 | case XDWRITEREAD_10: | |
3870 | if (!scsi_bidi_cmnd(SCpnt)) { | |
3871 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
3872 | INVALID_FIELD_IN_CDB, 0); | |
3873 | errsts = check_condition_result; | |
3874 | break; | |
3875 | } | |
3876 | ||
3877 | errsts = check_readiness(SCpnt, 0, devip); | |
3878 | if (errsts) | |
3879 | break; | |
3880 | if (scsi_debug_fake_rw) | |
3881 | break; | |
395cef03 MP |
3882 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
3883 | errsts = resp_read(SCpnt, lba, num, devip, ei_lba); | |
639db475 FT |
3884 | if (errsts) |
3885 | break; | |
395cef03 | 3886 | errsts = resp_write(SCpnt, lba, num, devip, ei_lba); |
639db475 FT |
3887 | if (errsts) |
3888 | break; | |
3889 | errsts = resp_xdwriteread(SCpnt, lba, num, devip); | |
3890 | break; | |
395cef03 MP |
3891 | case VARIABLE_LENGTH_CMD: |
3892 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION) { | |
3893 | ||
3894 | if ((cmd[10] & 0xe0) == 0) | |
3895 | printk(KERN_ERR | |
3896 | "Unprotected RD/WR to DIF device\n"); | |
3897 | ||
3898 | if (cmd[9] == READ_32) { | |
3899 | BUG_ON(SCpnt->cmd_len < 32); | |
3900 | goto read; | |
3901 | } | |
3902 | ||
3903 | if (cmd[9] == WRITE_32) { | |
3904 | BUG_ON(SCpnt->cmd_len < 32); | |
3905 | goto write; | |
3906 | } | |
3907 | } | |
3908 | ||
3909 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
3910 | INVALID_FIELD_IN_CDB, 0); | |
3911 | errsts = check_condition_result; | |
3912 | break; | |
3913 | ||
639db475 FT |
3914 | default: |
3915 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
3916 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " | |
3917 | "supported\n", *cmd); | |
3918 | errsts = check_readiness(SCpnt, 1, devip); | |
3919 | if (errsts) | |
3920 | break; /* Unit attention takes precedence */ | |
3921 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); | |
3922 | errsts = check_condition_result; | |
3923 | break; | |
3924 | } | |
3925 | return schedule_resp(SCpnt, devip, done, errsts, | |
3926 | (delay_override ? 0 : scsi_debug_delay)); | |
3927 | } | |
3928 | ||
f281233d JG |
3929 | static DEF_SCSI_QCMD(scsi_debug_queuecommand) |
3930 | ||
9e603ca0 | 3931 | static struct scsi_host_template sdebug_driver_template = { |
c8ed555a AV |
3932 | .show_info = scsi_debug_show_info, |
3933 | .write_info = scsi_debug_write_info, | |
9e603ca0 FT |
3934 | .proc_name = sdebug_proc_name, |
3935 | .name = "SCSI DEBUG", | |
3936 | .info = scsi_debug_info, | |
3937 | .slave_alloc = scsi_debug_slave_alloc, | |
3938 | .slave_configure = scsi_debug_slave_configure, | |
3939 | .slave_destroy = scsi_debug_slave_destroy, | |
3940 | .ioctl = scsi_debug_ioctl, | |
3941 | .queuecommand = scsi_debug_queuecommand, | |
3942 | .eh_abort_handler = scsi_debug_abort, | |
3943 | .eh_bus_reset_handler = scsi_debug_bus_reset, | |
3944 | .eh_device_reset_handler = scsi_debug_device_reset, | |
3945 | .eh_host_reset_handler = scsi_debug_host_reset, | |
3946 | .bios_param = scsi_debug_biosparam, | |
3947 | .can_queue = SCSI_DEBUG_CANQUEUE, | |
3948 | .this_id = 7, | |
3949 | .sg_tablesize = 256, | |
3950 | .cmd_per_lun = 16, | |
3951 | .max_sectors = 0xffff, | |
3952 | .use_clustering = DISABLE_CLUSTERING, | |
3953 | .module = THIS_MODULE, | |
3954 | }; | |
3955 | ||
1da177e4 LT |
3956 | static int sdebug_driver_probe(struct device * dev) |
3957 | { | |
3958 | int error = 0; | |
3959 | struct sdebug_host_info *sdbg_host; | |
3960 | struct Scsi_Host *hpnt; | |
c6a44287 | 3961 | int host_prot; |
1da177e4 LT |
3962 | |
3963 | sdbg_host = to_sdebug_host(dev); | |
3964 | ||
78d4e5a0 | 3965 | sdebug_driver_template.can_queue = scsi_debug_max_queue; |
0759c666 AM |
3966 | if (scsi_debug_clustering) |
3967 | sdebug_driver_template.use_clustering = ENABLE_CLUSTERING; | |
78d4e5a0 DG |
3968 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); |
3969 | if (NULL == hpnt) { | |
3970 | printk(KERN_ERR "%s: scsi_register failed\n", __func__); | |
3971 | error = -ENODEV; | |
1da177e4 | 3972 | return error; |
78d4e5a0 | 3973 | } |
1da177e4 LT |
3974 | |
3975 | sdbg_host->shost = hpnt; | |
3976 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; | |
3977 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) | |
3978 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
3979 | else | |
3980 | hpnt->max_id = scsi_debug_num_tgts; | |
c65b1445 | 3981 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
1da177e4 | 3982 | |
c6a44287 MP |
3983 | host_prot = 0; |
3984 | ||
3985 | switch (scsi_debug_dif) { | |
3986 | ||
3987 | case SD_DIF_TYPE1_PROTECTION: | |
3988 | host_prot = SHOST_DIF_TYPE1_PROTECTION; | |
3989 | if (scsi_debug_dix) | |
3990 | host_prot |= SHOST_DIX_TYPE1_PROTECTION; | |
3991 | break; | |
3992 | ||
3993 | case SD_DIF_TYPE2_PROTECTION: | |
3994 | host_prot = SHOST_DIF_TYPE2_PROTECTION; | |
3995 | if (scsi_debug_dix) | |
3996 | host_prot |= SHOST_DIX_TYPE2_PROTECTION; | |
3997 | break; | |
3998 | ||
3999 | case SD_DIF_TYPE3_PROTECTION: | |
4000 | host_prot = SHOST_DIF_TYPE3_PROTECTION; | |
4001 | if (scsi_debug_dix) | |
4002 | host_prot |= SHOST_DIX_TYPE3_PROTECTION; | |
4003 | break; | |
4004 | ||
4005 | default: | |
4006 | if (scsi_debug_dix) | |
4007 | host_prot |= SHOST_DIX_TYPE0_PROTECTION; | |
4008 | break; | |
4009 | } | |
4010 | ||
4011 | scsi_host_set_prot(hpnt, host_prot); | |
4012 | ||
4013 | printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n", | |
4014 | (host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", | |
4015 | (host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", | |
4016 | (host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", | |
4017 | (host_prot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", | |
4018 | (host_prot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", | |
4019 | (host_prot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", | |
4020 | (host_prot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); | |
4021 | ||
4022 | if (scsi_debug_guard == 1) | |
4023 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP); | |
4024 | else | |
4025 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC); | |
4026 | ||
1da177e4 LT |
4027 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
4028 | if (error) { | |
cadbd4a5 | 4029 | printk(KERN_ERR "%s: scsi_add_host failed\n", __func__); |
1da177e4 LT |
4030 | error = -ENODEV; |
4031 | scsi_host_put(hpnt); | |
4032 | } else | |
4033 | scsi_scan_host(hpnt); | |
4034 | ||
4035 | ||
4036 | return error; | |
4037 | } | |
4038 | ||
4039 | static int sdebug_driver_remove(struct device * dev) | |
4040 | { | |
1da177e4 | 4041 | struct sdebug_host_info *sdbg_host; |
8b40228f | 4042 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 LT |
4043 | |
4044 | sdbg_host = to_sdebug_host(dev); | |
4045 | ||
4046 | if (!sdbg_host) { | |
4047 | printk(KERN_ERR "%s: Unable to locate host info\n", | |
cadbd4a5 | 4048 | __func__); |
1da177e4 LT |
4049 | return -ENODEV; |
4050 | } | |
4051 | ||
4052 | scsi_remove_host(sdbg_host->shost); | |
4053 | ||
8b40228f FT |
4054 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
4055 | dev_list) { | |
1da177e4 LT |
4056 | list_del(&sdbg_devinfo->dev_list); |
4057 | kfree(sdbg_devinfo); | |
4058 | } | |
4059 | ||
4060 | scsi_host_put(sdbg_host->shost); | |
4061 | return 0; | |
4062 | } | |
4063 | ||
8dea0d02 FT |
4064 | static int pseudo_lld_bus_match(struct device *dev, |
4065 | struct device_driver *dev_driver) | |
1da177e4 | 4066 | { |
8dea0d02 | 4067 | return 1; |
1da177e4 | 4068 | } |
8dea0d02 FT |
4069 | |
4070 | static struct bus_type pseudo_lld_bus = { | |
4071 | .name = "pseudo", | |
4072 | .match = pseudo_lld_bus_match, | |
4073 | .probe = sdebug_driver_probe, | |
4074 | .remove = sdebug_driver_remove, | |
82069379 | 4075 | .drv_groups = sdebug_drv_groups, |
8dea0d02 | 4076 | }; |