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 | * | |
773642d9 | 9 | * Copyright (C) 2001 - 2016 Douglas Gilbert |
1da177e4 | 10 | * |
773642d9 DG |
11 | * This program is free software; you can redistribute it and/or modify |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2, or (at your option) | |
14 | * any later version. | |
1da177e4 | 15 | * |
78d4e5a0 | 16 | * For documentation see http://sg.danny.cz/sg/sdebug26.html |
1da177e4 | 17 | * |
1da177e4 LT |
18 | */ |
19 | ||
c1287970 TW |
20 | |
21 | #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ | |
22 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | ||
25 | #include <linux/kernel.h> | |
1da177e4 | 26 | #include <linux/errno.h> |
b333a819 | 27 | #include <linux/jiffies.h> |
5a0e3ad6 | 28 | #include <linux/slab.h> |
1da177e4 LT |
29 | #include <linux/types.h> |
30 | #include <linux/string.h> | |
31 | #include <linux/genhd.h> | |
32 | #include <linux/fs.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/proc_fs.h> | |
1da177e4 LT |
35 | #include <linux/vmalloc.h> |
36 | #include <linux/moduleparam.h> | |
852e034d | 37 | #include <linux/scatterlist.h> |
1da177e4 | 38 | #include <linux/blkdev.h> |
c6a44287 | 39 | #include <linux/crc-t10dif.h> |
cbf67842 DG |
40 | #include <linux/spinlock.h> |
41 | #include <linux/interrupt.h> | |
42 | #include <linux/atomic.h> | |
43 | #include <linux/hrtimer.h> | |
09ba24c1 | 44 | #include <linux/uuid.h> |
c6a44287 MP |
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> |
cbf67842 | 56 | #include <scsi/scsi_tcq.h> |
395cef03 | 57 | #include <scsi/scsi_dbg.h> |
1da177e4 | 58 | |
c6a44287 | 59 | #include "sd.h" |
1da177e4 | 60 | #include "scsi_logging.h" |
1da177e4 | 61 | |
773642d9 | 62 | /* make sure inq_product_rev string corresponds to this version */ |
b01f6f83 DG |
63 | #define SDEBUG_VERSION "1.86" |
64 | static const char *sdebug_version_date = "20160430"; | |
cbf67842 DG |
65 | |
66 | #define MY_NAME "scsi_debug" | |
1da177e4 | 67 | |
6f3cbf55 | 68 | /* Additional Sense Code (ASC) */ |
c65b1445 DG |
69 | #define NO_ADDITIONAL_SENSE 0x0 |
70 | #define LOGICAL_UNIT_NOT_READY 0x4 | |
c2248fc9 | 71 | #define LOGICAL_UNIT_COMMUNICATION_FAILURE 0x8 |
1da177e4 | 72 | #define UNRECOVERED_READ_ERR 0x11 |
c65b1445 | 73 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
1da177e4 | 74 | #define INVALID_OPCODE 0x20 |
22017ed2 | 75 | #define LBA_OUT_OF_RANGE 0x21 |
1da177e4 | 76 | #define INVALID_FIELD_IN_CDB 0x24 |
c65b1445 | 77 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
cbf67842 DG |
78 | #define UA_RESET_ASC 0x29 |
79 | #define UA_CHANGED_ASC 0x2a | |
19c8ead7 EM |
80 | #define TARGET_CHANGED_ASC 0x3f |
81 | #define LUNS_CHANGED_ASCQ 0x0e | |
22017ed2 DG |
82 | #define INSUFF_RES_ASC 0x55 |
83 | #define INSUFF_RES_ASCQ 0x3 | |
cbf67842 DG |
84 | #define POWER_ON_RESET_ASCQ 0x0 |
85 | #define BUS_RESET_ASCQ 0x2 /* scsi bus reset occurred */ | |
86 | #define MODE_CHANGED_ASCQ 0x1 /* mode parameters changed */ | |
22017ed2 | 87 | #define CAPACITY_CHANGED_ASCQ 0x9 |
1da177e4 | 88 | #define SAVING_PARAMS_UNSUP 0x39 |
6f3cbf55 | 89 | #define TRANSPORT_PROBLEM 0x4b |
c65b1445 DG |
90 | #define THRESHOLD_EXCEEDED 0x5d |
91 | #define LOW_POWER_COND_ON 0x5e | |
22017ed2 | 92 | #define MISCOMPARE_VERIFY_ASC 0x1d |
acafd0b9 EM |
93 | #define MICROCODE_CHANGED_ASCQ 0x1 /* with TARGET_CHANGED_ASC */ |
94 | #define MICROCODE_CHANGED_WO_RESET_ASCQ 0x16 | |
1da177e4 | 95 | |
6f3cbf55 DG |
96 | /* Additional Sense Code Qualifier (ASCQ) */ |
97 | #define ACK_NAK_TO 0x3 | |
98 | ||
1da177e4 LT |
99 | /* Default values for driver parameters */ |
100 | #define DEF_NUM_HOST 1 | |
101 | #define DEF_NUM_TGTS 1 | |
102 | #define DEF_MAX_LUNS 1 | |
103 | /* With these defaults, this driver will make 1 host with 1 target | |
104 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. | |
105 | */ | |
5b94e232 | 106 | #define DEF_ATO 1 |
c2206098 | 107 | #define DEF_JDELAY 1 /* if > 0 unit is a jiffy */ |
1da177e4 | 108 | #define DEF_DEV_SIZE_MB 8 |
5b94e232 MP |
109 | #define DEF_DIF 0 |
110 | #define DEF_DIX 0 | |
1da177e4 | 111 | #define DEF_D_SENSE 0 |
5b94e232 | 112 | #define DEF_EVERY_NTH 0 |
23183910 | 113 | #define DEF_FAKE_RW 0 |
c6a44287 | 114 | #define DEF_GUARD 0 |
cbf67842 | 115 | #define DEF_HOST_LOCK 0 |
5b94e232 MP |
116 | #define DEF_LBPU 0 |
117 | #define DEF_LBPWS 0 | |
118 | #define DEF_LBPWS10 0 | |
be1dd78d | 119 | #define DEF_LBPRZ 1 |
ea61fca5 | 120 | #define DEF_LOWEST_ALIGNED 0 |
cbf67842 | 121 | #define DEF_NDELAY 0 /* if > 0 unit is a nanosecond */ |
5b94e232 MP |
122 | #define DEF_NO_LUN_0 0 |
123 | #define DEF_NUM_PARTS 0 | |
124 | #define DEF_OPTS 0 | |
32c5844a | 125 | #define DEF_OPT_BLKS 1024 |
5b94e232 | 126 | #define DEF_PHYSBLK_EXP 0 |
b01f6f83 | 127 | #define DEF_PTYPE TYPE_DISK |
d986788b | 128 | #define DEF_REMOVABLE false |
760f3b03 | 129 | #define DEF_SCSI_LEVEL 7 /* INQUIRY, byte2 [6->SPC-4; 7->SPC-5] */ |
5b94e232 MP |
130 | #define DEF_SECTOR_SIZE 512 |
131 | #define DEF_UNMAP_ALIGNMENT 0 | |
132 | #define DEF_UNMAP_GRANULARITY 1 | |
6014759c MP |
133 | #define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF |
134 | #define DEF_UNMAP_MAX_DESC 256 | |
5b94e232 MP |
135 | #define DEF_VIRTUAL_GB 0 |
136 | #define DEF_VPD_USE_HOSTNO 1 | |
137 | #define DEF_WRITESAME_LENGTH 0xFFFF | |
c2248fc9 | 138 | #define DEF_STRICT 0 |
c4837394 DG |
139 | #define DEF_STATISTICS false |
140 | #define DEF_SUBMIT_QUEUES 1 | |
09ba24c1 | 141 | #define DEF_UUID_CTL 0 |
c2206098 | 142 | #define JDELAY_OVERRIDDEN -9999 |
1da177e4 | 143 | |
b01f6f83 DG |
144 | #define SDEBUG_LUN_0_VAL 0 |
145 | ||
773642d9 DG |
146 | /* bit mask values for sdebug_opts */ |
147 | #define SDEBUG_OPT_NOISE 1 | |
148 | #define SDEBUG_OPT_MEDIUM_ERR 2 | |
149 | #define SDEBUG_OPT_TIMEOUT 4 | |
150 | #define SDEBUG_OPT_RECOVERED_ERR 8 | |
151 | #define SDEBUG_OPT_TRANSPORT_ERR 16 | |
152 | #define SDEBUG_OPT_DIF_ERR 32 | |
153 | #define SDEBUG_OPT_DIX_ERR 64 | |
154 | #define SDEBUG_OPT_MAC_TIMEOUT 128 | |
155 | #define SDEBUG_OPT_SHORT_TRANSFER 0x100 | |
156 | #define SDEBUG_OPT_Q_NOISE 0x200 | |
157 | #define SDEBUG_OPT_ALL_TSF 0x400 | |
158 | #define SDEBUG_OPT_RARE_TSF 0x800 | |
159 | #define SDEBUG_OPT_N_WCE 0x1000 | |
160 | #define SDEBUG_OPT_RESET_NOISE 0x2000 | |
161 | #define SDEBUG_OPT_NO_CDB_NOISE 0x4000 | |
162 | #define SDEBUG_OPT_ALL_NOISE (SDEBUG_OPT_NOISE | SDEBUG_OPT_Q_NOISE | \ | |
163 | SDEBUG_OPT_RESET_NOISE) | |
164 | #define SDEBUG_OPT_ALL_INJECTING (SDEBUG_OPT_RECOVERED_ERR | \ | |
165 | SDEBUG_OPT_TRANSPORT_ERR | \ | |
166 | SDEBUG_OPT_DIF_ERR | SDEBUG_OPT_DIX_ERR | \ | |
167 | SDEBUG_OPT_SHORT_TRANSFER) | |
1da177e4 | 168 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
fd32119b | 169 | * - a missing response is simulated if SDEBUG_OPT_TIMEOUT is set |
1da177e4 | 170 | * - a RECOVERED_ERROR is simulated on successful read and write |
773642d9 | 171 | * commands if SDEBUG_OPT_RECOVERED_ERR is set. |
6f3cbf55 | 172 | * - a TRANSPORT_ERROR is simulated on successful read and write |
773642d9 | 173 | * commands if SDEBUG_OPT_TRANSPORT_ERR is set. |
1da177e4 LT |
174 | * |
175 | * When "every_nth" < 0 then after "- every_nth" commands: | |
fd32119b | 176 | * - a missing response is simulated if SDEBUG_OPT_TIMEOUT is set |
1da177e4 | 177 | * - a RECOVERED_ERROR is simulated on successful read and write |
773642d9 | 178 | * commands if SDEBUG_OPT_RECOVERED_ERR is set. |
6f3cbf55 | 179 | * - a TRANSPORT_ERROR is simulated on successful read and write |
773642d9 DG |
180 | * commands if _DEBUG_OPT_TRANSPORT_ERR is set. |
181 | * This will continue on every subsequent command until some other action | |
182 | * occurs (e.g. the user * writing a new value (other than -1 or 1) to | |
183 | * every_nth via sysfs). | |
1da177e4 LT |
184 | */ |
185 | ||
fd32119b | 186 | /* As indicated in SAM-5 and SPC-4 Unit Attentions (UAs) are returned in |
cbf67842 DG |
187 | * priority order. In the subset implemented here lower numbers have higher |
188 | * priority. The UA numbers should be a sequence starting from 0 with | |
189 | * SDEBUG_NUM_UAS being 1 higher than the highest numbered UA. */ | |
190 | #define SDEBUG_UA_POR 0 /* Power on, reset, or bus device reset */ | |
191 | #define SDEBUG_UA_BUS_RESET 1 | |
192 | #define SDEBUG_UA_MODE_CHANGED 2 | |
0d01c5df | 193 | #define SDEBUG_UA_CAPACITY_CHANGED 3 |
19c8ead7 | 194 | #define SDEBUG_UA_LUNS_CHANGED 4 |
acafd0b9 EM |
195 | #define SDEBUG_UA_MICROCODE_CHANGED 5 /* simulate firmware change */ |
196 | #define SDEBUG_UA_MICROCODE_CHANGED_WO_RESET 6 | |
197 | #define SDEBUG_NUM_UAS 7 | |
cbf67842 | 198 | |
773642d9 | 199 | /* when 1==SDEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this |
1da177e4 LT |
200 | * sector on read commands: */ |
201 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ | |
32f7ef73 | 202 | #define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */ |
1da177e4 LT |
203 | |
204 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) | |
205 | * or "peripheral device" addressing (value 0) */ | |
206 | #define SAM2_LUN_ADDRESS_METHOD 0 | |
207 | ||
c4837394 DG |
208 | /* SDEBUG_CANQUEUE is the maximum number of commands that can be queued |
209 | * (for response) per submit queue at one time. Can be reduced by max_queue | |
210 | * option. Command responses are not queued when jdelay=0 and ndelay=0. The | |
211 | * per-device DEF_CMD_PER_LUN can be changed via sysfs: | |
212 | * /sys/class/scsi_device/<h:c:t:l>/device/queue_depth | |
213 | * but cannot exceed SDEBUG_CANQUEUE . | |
214 | */ | |
215 | #define SDEBUG_CANQUEUE_WORDS 3 /* a WORD is bits in a long */ | |
216 | #define SDEBUG_CANQUEUE (SDEBUG_CANQUEUE_WORDS * BITS_PER_LONG) | |
cbf67842 DG |
217 | #define DEF_CMD_PER_LUN 255 |
218 | ||
fd32119b DG |
219 | #define F_D_IN 1 |
220 | #define F_D_OUT 2 | |
221 | #define F_D_OUT_MAYBE 4 /* WRITE SAME, NDOB bit */ | |
222 | #define F_D_UNKN 8 | |
223 | #define F_RL_WLUN_OK 0x10 | |
224 | #define F_SKIP_UA 0x20 | |
225 | #define F_DELAY_OVERR 0x40 | |
226 | #define F_SA_LOW 0x80 /* cdb byte 1, bits 4 to 0 */ | |
227 | #define F_SA_HIGH 0x100 /* as used by variable length cdbs */ | |
228 | #define F_INV_OP 0x200 | |
229 | #define F_FAKE_RW 0x400 | |
230 | #define F_M_ACCESS 0x800 /* media access */ | |
231 | ||
232 | #define FF_RESPOND (F_RL_WLUN_OK | F_SKIP_UA | F_DELAY_OVERR) | |
233 | #define FF_DIRECT_IO (F_M_ACCESS | F_FAKE_RW) | |
234 | #define FF_SA (F_SA_HIGH | F_SA_LOW) | |
235 | ||
236 | #define SDEBUG_MAX_PARTS 4 | |
237 | ||
b01f6f83 | 238 | #define SDEBUG_MAX_CMD_LEN 32 |
fd32119b DG |
239 | |
240 | ||
241 | struct sdebug_dev_info { | |
242 | struct list_head dev_list; | |
243 | unsigned int channel; | |
244 | unsigned int target; | |
245 | u64 lun; | |
09ba24c1 | 246 | uuid_be lu_name; |
fd32119b DG |
247 | struct sdebug_host_info *sdbg_host; |
248 | unsigned long uas_bm[1]; | |
249 | atomic_t num_in_q; | |
c4837394 | 250 | atomic_t stopped; |
fd32119b DG |
251 | bool used; |
252 | }; | |
253 | ||
254 | struct sdebug_host_info { | |
255 | struct list_head host_list; | |
256 | struct Scsi_Host *shost; | |
257 | struct device dev; | |
258 | struct list_head dev_info_list; | |
259 | }; | |
260 | ||
261 | #define to_sdebug_host(d) \ | |
262 | container_of(d, struct sdebug_host_info, dev) | |
263 | ||
264 | struct sdebug_defer { | |
265 | struct hrtimer hrt; | |
266 | struct execute_work ew; | |
c4837394 DG |
267 | int sqa_idx; /* index of sdebug_queue array */ |
268 | int qc_idx; /* index of sdebug_queued_cmd array within sqa_idx */ | |
269 | int issuing_cpu; | |
fd32119b DG |
270 | }; |
271 | ||
272 | struct sdebug_queued_cmd { | |
c4837394 DG |
273 | /* corresponding bit set in in_use_bm[] in owning struct sdebug_queue |
274 | * instance indicates this slot is in use. | |
275 | */ | |
fd32119b DG |
276 | struct sdebug_defer *sd_dp; |
277 | struct scsi_cmnd *a_cmnd; | |
c4837394 DG |
278 | unsigned int inj_recovered:1; |
279 | unsigned int inj_transport:1; | |
280 | unsigned int inj_dif:1; | |
281 | unsigned int inj_dix:1; | |
282 | unsigned int inj_short:1; | |
fd32119b DG |
283 | }; |
284 | ||
c4837394 DG |
285 | struct sdebug_queue { |
286 | struct sdebug_queued_cmd qc_arr[SDEBUG_CANQUEUE]; | |
287 | unsigned long in_use_bm[SDEBUG_CANQUEUE_WORDS]; | |
288 | spinlock_t qc_lock; | |
289 | atomic_t blocked; /* to temporarily stop more being queued */ | |
fd32119b DG |
290 | }; |
291 | ||
c4837394 DG |
292 | static atomic_t sdebug_cmnd_count; /* number of incoming commands */ |
293 | static atomic_t sdebug_completions; /* count of deferred completions */ | |
294 | static atomic_t sdebug_miss_cpus; /* submission + completion cpus differ */ | |
295 | static atomic_t sdebug_a_tsf; /* 'almost task set full' counter */ | |
296 | ||
fd32119b | 297 | struct opcode_info_t { |
b01f6f83 DG |
298 | u8 num_attached; /* 0 if this is it (i.e. a leaf); use 0xff */ |
299 | /* for terminating element */ | |
fd32119b DG |
300 | u8 opcode; /* if num_attached > 0, preferred */ |
301 | u16 sa; /* service action */ | |
302 | u32 flags; /* OR-ed set of SDEB_F_* */ | |
303 | int (*pfp)(struct scsi_cmnd *, struct sdebug_dev_info *); | |
304 | const struct opcode_info_t *arrp; /* num_attached elements or NULL */ | |
305 | u8 len_mask[16]; /* len=len_mask[0], then mask for cdb[1]... */ | |
306 | /* ignore cdb bytes after position 15 */ | |
307 | }; | |
308 | ||
309 | /* SCSI opcodes (first byte of cdb) of interest mapped onto these indexes */ | |
c2248fc9 DG |
310 | enum sdeb_opcode_index { |
311 | SDEB_I_INVALID_OPCODE = 0, | |
312 | SDEB_I_INQUIRY = 1, | |
313 | SDEB_I_REPORT_LUNS = 2, | |
314 | SDEB_I_REQUEST_SENSE = 3, | |
315 | SDEB_I_TEST_UNIT_READY = 4, | |
316 | SDEB_I_MODE_SENSE = 5, /* 6, 10 */ | |
317 | SDEB_I_MODE_SELECT = 6, /* 6, 10 */ | |
318 | SDEB_I_LOG_SENSE = 7, | |
319 | SDEB_I_READ_CAPACITY = 8, /* 10; 16 is in SA_IN(16) */ | |
320 | SDEB_I_READ = 9, /* 6, 10, 12, 16 */ | |
321 | SDEB_I_WRITE = 10, /* 6, 10, 12, 16 */ | |
322 | SDEB_I_START_STOP = 11, | |
323 | SDEB_I_SERV_ACT_IN = 12, /* 12, 16 */ | |
324 | SDEB_I_SERV_ACT_OUT = 13, /* 12, 16 */ | |
325 | SDEB_I_MAINT_IN = 14, | |
326 | SDEB_I_MAINT_OUT = 15, | |
327 | SDEB_I_VERIFY = 16, /* 10 only */ | |
328 | SDEB_I_VARIABLE_LEN = 17, | |
329 | SDEB_I_RESERVE = 18, /* 6, 10 */ | |
330 | SDEB_I_RELEASE = 19, /* 6, 10 */ | |
331 | SDEB_I_ALLOW_REMOVAL = 20, /* PREVENT ALLOW MEDIUM REMOVAL */ | |
332 | SDEB_I_REZERO_UNIT = 21, /* REWIND in SSC */ | |
333 | SDEB_I_ATA_PT = 22, /* 12, 16 */ | |
334 | SDEB_I_SEND_DIAG = 23, | |
335 | SDEB_I_UNMAP = 24, | |
336 | SDEB_I_XDWRITEREAD = 25, /* 10 only */ | |
337 | SDEB_I_WRITE_BUFFER = 26, | |
338 | SDEB_I_WRITE_SAME = 27, /* 10, 16 */ | |
339 | SDEB_I_SYNC_CACHE = 28, /* 10 only */ | |
340 | SDEB_I_COMP_WRITE = 29, | |
341 | SDEB_I_LAST_ELEMENT = 30, /* keep this last */ | |
342 | }; | |
343 | ||
c4837394 | 344 | |
c2248fc9 DG |
345 | static const unsigned char opcode_ind_arr[256] = { |
346 | /* 0x0; 0x0->0x1f: 6 byte cdbs */ | |
347 | SDEB_I_TEST_UNIT_READY, SDEB_I_REZERO_UNIT, 0, SDEB_I_REQUEST_SENSE, | |
348 | 0, 0, 0, 0, | |
349 | SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, 0, | |
350 | 0, 0, SDEB_I_INQUIRY, 0, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, | |
351 | SDEB_I_RELEASE, | |
352 | 0, 0, SDEB_I_MODE_SENSE, SDEB_I_START_STOP, 0, SDEB_I_SEND_DIAG, | |
353 | SDEB_I_ALLOW_REMOVAL, 0, | |
354 | /* 0x20; 0x20->0x3f: 10 byte cdbs */ | |
355 | 0, 0, 0, 0, 0, SDEB_I_READ_CAPACITY, 0, 0, | |
356 | SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, SDEB_I_VERIFY, | |
357 | 0, 0, 0, 0, 0, SDEB_I_SYNC_CACHE, 0, 0, | |
358 | 0, 0, 0, SDEB_I_WRITE_BUFFER, 0, 0, 0, 0, | |
359 | /* 0x40; 0x40->0x5f: 10 byte cdbs */ | |
360 | 0, SDEB_I_WRITE_SAME, SDEB_I_UNMAP, 0, 0, 0, 0, 0, | |
361 | 0, 0, 0, 0, 0, SDEB_I_LOG_SENSE, 0, 0, | |
362 | 0, 0, 0, SDEB_I_XDWRITEREAD, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, | |
363 | SDEB_I_RELEASE, | |
364 | 0, 0, SDEB_I_MODE_SENSE, 0, 0, 0, 0, 0, | |
fd32119b | 365 | /* 0x60; 0x60->0x7d are reserved, 0x7e is "extended cdb" */ |
c2248fc9 DG |
366 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
367 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
368 | 0, SDEB_I_VARIABLE_LEN, | |
369 | /* 0x80; 0x80->0x9f: 16 byte cdbs */ | |
370 | 0, 0, 0, 0, 0, SDEB_I_ATA_PT, 0, 0, | |
371 | SDEB_I_READ, SDEB_I_COMP_WRITE, SDEB_I_WRITE, 0, 0, 0, 0, 0, | |
372 | 0, 0, 0, SDEB_I_WRITE_SAME, 0, 0, 0, 0, | |
373 | 0, 0, 0, 0, 0, 0, SDEB_I_SERV_ACT_IN, SDEB_I_SERV_ACT_OUT, | |
374 | /* 0xa0; 0xa0->0xbf: 12 byte cdbs */ | |
375 | SDEB_I_REPORT_LUNS, SDEB_I_ATA_PT, 0, SDEB_I_MAINT_IN, | |
376 | SDEB_I_MAINT_OUT, 0, 0, 0, | |
377 | SDEB_I_READ, SDEB_I_SERV_ACT_OUT, SDEB_I_WRITE, SDEB_I_SERV_ACT_IN, | |
378 | 0, 0, 0, 0, | |
379 | 0, 0, 0, 0, 0, 0, 0, 0, | |
380 | 0, 0, 0, 0, 0, 0, 0, 0, | |
381 | /* 0xc0; 0xc0->0xff: vendor specific */ | |
382 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
383 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
384 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
385 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
386 | }; | |
387 | ||
c2248fc9 DG |
388 | static int resp_inquiry(struct scsi_cmnd *, struct sdebug_dev_info *); |
389 | static int resp_report_luns(struct scsi_cmnd *, struct sdebug_dev_info *); | |
390 | static int resp_requests(struct scsi_cmnd *, struct sdebug_dev_info *); | |
391 | static int resp_mode_sense(struct scsi_cmnd *, struct sdebug_dev_info *); | |
392 | static int resp_mode_select(struct scsi_cmnd *, struct sdebug_dev_info *); | |
393 | static int resp_log_sense(struct scsi_cmnd *, struct sdebug_dev_info *); | |
394 | static int resp_readcap(struct scsi_cmnd *, struct sdebug_dev_info *); | |
395 | static int resp_read_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); | |
396 | static int resp_write_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); | |
397 | static int resp_start_stop(struct scsi_cmnd *, struct sdebug_dev_info *); | |
398 | static int resp_readcap16(struct scsi_cmnd *, struct sdebug_dev_info *); | |
399 | static int resp_get_lba_status(struct scsi_cmnd *, struct sdebug_dev_info *); | |
400 | static int resp_report_tgtpgs(struct scsi_cmnd *, struct sdebug_dev_info *); | |
401 | static int resp_unmap(struct scsi_cmnd *, struct sdebug_dev_info *); | |
38d5c833 DG |
402 | static int resp_rsup_opcodes(struct scsi_cmnd *, struct sdebug_dev_info *); |
403 | static int resp_rsup_tmfs(struct scsi_cmnd *, struct sdebug_dev_info *); | |
c2248fc9 DG |
404 | static int resp_write_same_10(struct scsi_cmnd *, struct sdebug_dev_info *); |
405 | static int resp_write_same_16(struct scsi_cmnd *, struct sdebug_dev_info *); | |
406 | static int resp_xdwriteread_10(struct scsi_cmnd *, struct sdebug_dev_info *); | |
38d5c833 | 407 | static int resp_comp_write(struct scsi_cmnd *, struct sdebug_dev_info *); |
acafd0b9 | 408 | static int resp_write_buffer(struct scsi_cmnd *, struct sdebug_dev_info *); |
c2248fc9 | 409 | |
c2248fc9 DG |
410 | static const struct opcode_info_t msense_iarr[1] = { |
411 | {0, 0x1a, 0, F_D_IN, NULL, NULL, | |
412 | {6, 0xe8, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
413 | }; | |
414 | ||
415 | static const struct opcode_info_t mselect_iarr[1] = { | |
416 | {0, 0x15, 0, F_D_OUT, NULL, NULL, | |
417 | {6, 0xf1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
418 | }; | |
419 | ||
420 | static const struct opcode_info_t read_iarr[3] = { | |
421 | {0, 0x28, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL,/* READ(10) */ | |
422 | {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, | |
423 | 0, 0, 0, 0} }, | |
424 | {0, 0x8, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL, /* READ(6) */ | |
425 | {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
426 | {0, 0xa8, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL,/* READ(12) */ | |
427 | {12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, | |
428 | 0xc7, 0, 0, 0, 0} }, | |
429 | }; | |
430 | ||
431 | static const struct opcode_info_t write_iarr[3] = { | |
432 | {0, 0x2a, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 10 */ | |
433 | {10, 0xfb, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, | |
434 | 0, 0, 0, 0} }, | |
435 | {0, 0xa, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 6 */ | |
436 | {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
437 | {0, 0xaa, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 12 */ | |
438 | {12, 0xfb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, | |
439 | 0xc7, 0, 0, 0, 0} }, | |
440 | }; | |
441 | ||
442 | static const struct opcode_info_t sa_in_iarr[1] = { | |
443 | {0, 0x9e, 0x12, F_SA_LOW | F_D_IN, resp_get_lba_status, NULL, | |
444 | {16, 0x12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
445 | 0xff, 0xff, 0xff, 0, 0xc7} }, | |
446 | }; | |
447 | ||
448 | static const struct opcode_info_t vl_iarr[1] = { /* VARIABLE LENGTH */ | |
449 | {0, 0x7f, 0xb, F_SA_HIGH | F_D_OUT | FF_DIRECT_IO, resp_write_dt0, | |
450 | NULL, {32, 0xc7, 0, 0, 0, 0, 0x1f, 0x18, 0x0, 0xb, 0xfa, | |
451 | 0, 0xff, 0xff, 0xff, 0xff} }, /* WRITE(32) */ | |
452 | }; | |
453 | ||
454 | static const struct opcode_info_t maint_in_iarr[2] = { | |
38d5c833 | 455 | {0, 0xa3, 0xc, F_SA_LOW | F_D_IN, resp_rsup_opcodes, NULL, |
c2248fc9 DG |
456 | {12, 0xc, 0x87, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, |
457 | 0xc7, 0, 0, 0, 0} }, | |
38d5c833 | 458 | {0, 0xa3, 0xd, F_SA_LOW | F_D_IN, resp_rsup_tmfs, NULL, |
c2248fc9 DG |
459 | {12, 0xd, 0x80, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, |
460 | 0, 0} }, | |
461 | }; | |
462 | ||
463 | static const struct opcode_info_t write_same_iarr[1] = { | |
464 | {0, 0x93, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, resp_write_same_16, NULL, | |
465 | {16, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
466 | 0xff, 0xff, 0xff, 0x1f, 0xc7} }, | |
467 | }; | |
468 | ||
469 | static const struct opcode_info_t reserve_iarr[1] = { | |
470 | {0, 0x16, 0, F_D_OUT, NULL, NULL, /* RESERVE(6) */ | |
471 | {6, 0x1f, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
472 | }; | |
473 | ||
474 | static const struct opcode_info_t release_iarr[1] = { | |
475 | {0, 0x17, 0, F_D_OUT, NULL, NULL, /* RELEASE(6) */ | |
476 | {6, 0x1f, 0xff, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
477 | }; | |
478 | ||
479 | ||
480 | /* This array is accessed via SDEB_I_* values. Make sure all are mapped, | |
481 | * plus the terminating elements for logic that scans this table such as | |
482 | * REPORT SUPPORTED OPERATION CODES. */ | |
483 | static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEMENT + 1] = { | |
484 | /* 0 */ | |
485 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, | |
486 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
487 | {0, 0x12, 0, FF_RESPOND | F_D_IN, resp_inquiry, NULL, | |
488 | {6, 0xe3, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
489 | {0, 0xa0, 0, FF_RESPOND | F_D_IN, resp_report_luns, NULL, | |
490 | {12, 0xe3, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, | |
491 | 0, 0} }, | |
492 | {0, 0x3, 0, FF_RESPOND | F_D_IN, resp_requests, NULL, | |
493 | {6, 0xe1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
494 | {0, 0x0, 0, F_M_ACCESS | F_RL_WLUN_OK, NULL, NULL,/* TEST UNIT READY */ | |
495 | {6, 0, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
496 | {1, 0x5a, 0, F_D_IN, resp_mode_sense, msense_iarr, | |
497 | {10, 0xf8, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, | |
498 | 0} }, | |
499 | {1, 0x55, 0, F_D_OUT, resp_mode_select, mselect_iarr, | |
500 | {10, 0xf1, 0, 0, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, | |
501 | {0, 0x4d, 0, F_D_IN, resp_log_sense, NULL, | |
502 | {10, 0xe3, 0xff, 0xff, 0, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, | |
503 | 0, 0, 0} }, | |
504 | {0, 0x25, 0, F_D_IN, resp_readcap, NULL, | |
505 | {10, 0xe1, 0xff, 0xff, 0xff, 0xff, 0, 0, 0x1, 0xc7, 0, 0, 0, 0, | |
506 | 0, 0} }, | |
507 | {3, 0x88, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, read_iarr, | |
508 | {16, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
509 | 0xff, 0xff, 0xff, 0x9f, 0xc7} }, /* READ(16) */ | |
510 | /* 10 */ | |
511 | {3, 0x8a, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, write_iarr, | |
512 | {16, 0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
513 | 0xff, 0xff, 0xff, 0x9f, 0xc7} }, /* WRITE(16) */ | |
514 | {0, 0x1b, 0, 0, resp_start_stop, NULL, /* START STOP UNIT */ | |
515 | {6, 0x1, 0, 0xf, 0xf7, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
516 | {1, 0x9e, 0x10, F_SA_LOW | F_D_IN, resp_readcap16, sa_in_iarr, | |
517 | {16, 0x10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
518 | 0xff, 0xff, 0xff, 0x1, 0xc7} }, /* READ CAPACITY(16) */ | |
519 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* SA OUT */ | |
520 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
521 | {2, 0xa3, 0xa, F_SA_LOW | F_D_IN, resp_report_tgtpgs, maint_in_iarr, | |
522 | {12, 0xea, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, 0, | |
523 | 0} }, | |
524 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* MAINT OUT */ | |
525 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
f7f9f26b DG |
526 | {0, 0x2f, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, NULL, NULL, /* VERIFY(10) */ |
527 | {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, | |
528 | 0, 0, 0, 0, 0, 0} }, | |
c2248fc9 DG |
529 | {1, 0x7f, 0x9, F_SA_HIGH | F_D_IN | FF_DIRECT_IO, resp_read_dt0, |
530 | vl_iarr, {32, 0xc7, 0, 0, 0, 0, 0x1f, 0x18, 0x0, 0x9, 0xfe, 0, | |
531 | 0xff, 0xff, 0xff, 0xff} },/* VARIABLE LENGTH, READ(32) */ | |
532 | {1, 0x56, 0, F_D_OUT, NULL, reserve_iarr, /* RESERVE(10) */ | |
533 | {10, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, | |
534 | 0} }, | |
535 | {1, 0x57, 0, F_D_OUT, NULL, release_iarr, /* RELEASE(10) */ | |
536 | {10, 0x13, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, | |
537 | 0} }, | |
538 | /* 20 */ | |
f7f9f26b DG |
539 | {0, 0x1e, 0, 0, NULL, NULL, /* ALLOW REMOVAL */ |
540 | {6, 0, 0, 0, 0x3, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
c2248fc9 DG |
541 | {0, 0x1, 0, 0, resp_start_stop, NULL, /* REWIND ?? */ |
542 | {6, 0x1, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
543 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* ATA_PT */ | |
544 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
545 | {0, 0x1d, F_D_OUT, 0, NULL, NULL, /* SEND DIAGNOSTIC */ | |
546 | {6, 0xf7, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
547 | {0, 0x42, 0, F_D_OUT | FF_DIRECT_IO, resp_unmap, NULL, /* UNMAP */ | |
548 | {10, 0x1, 0, 0, 0, 0, 0x1f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, | |
549 | {0, 0x53, 0, F_D_IN | F_D_OUT | FF_DIRECT_IO, resp_xdwriteread_10, | |
550 | NULL, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, | |
551 | 0, 0, 0, 0, 0, 0} }, | |
acafd0b9 EM |
552 | {0, 0x3b, 0, F_D_OUT_MAYBE, resp_write_buffer, NULL, |
553 | {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, | |
554 | 0, 0, 0, 0} }, /* WRITE_BUFFER */ | |
c2248fc9 DG |
555 | {1, 0x41, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, resp_write_same_10, |
556 | write_same_iarr, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, | |
557 | 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, | |
558 | {0, 0x35, 0, F_DELAY_OVERR | FF_DIRECT_IO, NULL, NULL, /* SYNC_CACHE */ | |
559 | {10, 0x7, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, | |
560 | 0, 0, 0, 0} }, | |
38d5c833 | 561 | {0, 0x89, 0, F_D_OUT | FF_DIRECT_IO, resp_comp_write, NULL, |
c2248fc9 DG |
562 | {16, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, |
563 | 0, 0xff, 0x1f, 0xc7} }, /* COMPARE AND WRITE */ | |
564 | ||
565 | /* 30 */ | |
566 | {0xff, 0, 0, 0, NULL, NULL, /* terminating element */ | |
567 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
568 | }; | |
569 | ||
773642d9 DG |
570 | static int sdebug_add_host = DEF_NUM_HOST; |
571 | static int sdebug_ato = DEF_ATO; | |
c2206098 | 572 | static int sdebug_jdelay = DEF_JDELAY; /* if > 0 then unit is jiffies */ |
773642d9 DG |
573 | static int sdebug_dev_size_mb = DEF_DEV_SIZE_MB; |
574 | static int sdebug_dif = DEF_DIF; | |
575 | static int sdebug_dix = DEF_DIX; | |
576 | static int sdebug_dsense = DEF_D_SENSE; | |
577 | static int sdebug_every_nth = DEF_EVERY_NTH; | |
578 | static int sdebug_fake_rw = DEF_FAKE_RW; | |
579 | static unsigned int sdebug_guard = DEF_GUARD; | |
580 | static int sdebug_lowest_aligned = DEF_LOWEST_ALIGNED; | |
581 | static int sdebug_max_luns = DEF_MAX_LUNS; | |
c4837394 | 582 | static int sdebug_max_queue = SDEBUG_CANQUEUE; /* per submit queue */ |
cbf67842 | 583 | static atomic_t retired_max_queue; /* if > 0 then was prior max_queue */ |
c2206098 | 584 | static int sdebug_ndelay = DEF_NDELAY; /* if > 0 then unit is nanoseconds */ |
773642d9 DG |
585 | static int sdebug_no_lun_0 = DEF_NO_LUN_0; |
586 | static int sdebug_no_uld; | |
587 | static int sdebug_num_parts = DEF_NUM_PARTS; | |
588 | static int sdebug_num_tgts = DEF_NUM_TGTS; /* targets per host */ | |
589 | static int sdebug_opt_blks = DEF_OPT_BLKS; | |
590 | static int sdebug_opts = DEF_OPTS; | |
591 | static int sdebug_physblk_exp = DEF_PHYSBLK_EXP; | |
b01f6f83 | 592 | static int sdebug_ptype = DEF_PTYPE; /* SCSI peripheral device type */ |
773642d9 DG |
593 | static int sdebug_scsi_level = DEF_SCSI_LEVEL; |
594 | static int sdebug_sector_size = DEF_SECTOR_SIZE; | |
595 | static int sdebug_virtual_gb = DEF_VIRTUAL_GB; | |
596 | static int sdebug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; | |
597 | static unsigned int sdebug_lbpu = DEF_LBPU; | |
598 | static unsigned int sdebug_lbpws = DEF_LBPWS; | |
599 | static unsigned int sdebug_lbpws10 = DEF_LBPWS10; | |
600 | static unsigned int sdebug_lbprz = DEF_LBPRZ; | |
601 | static unsigned int sdebug_unmap_alignment = DEF_UNMAP_ALIGNMENT; | |
602 | static unsigned int sdebug_unmap_granularity = DEF_UNMAP_GRANULARITY; | |
603 | static unsigned int sdebug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS; | |
604 | static unsigned int sdebug_unmap_max_desc = DEF_UNMAP_MAX_DESC; | |
605 | static unsigned int sdebug_write_same_length = DEF_WRITESAME_LENGTH; | |
09ba24c1 | 606 | static int sdebug_uuid_ctl = DEF_UUID_CTL; |
773642d9 DG |
607 | static bool sdebug_removable = DEF_REMOVABLE; |
608 | static bool sdebug_clustering; | |
609 | static bool sdebug_host_lock = DEF_HOST_LOCK; | |
610 | static bool sdebug_strict = DEF_STRICT; | |
817fd66b | 611 | static bool sdebug_any_injecting_opt; |
773642d9 | 612 | static bool sdebug_verbose; |
f46eb0e9 | 613 | static bool have_dif_prot; |
c4837394 DG |
614 | static bool sdebug_statistics = DEF_STATISTICS; |
615 | static bool sdebug_mq_active; | |
1da177e4 | 616 | |
c65b1445 | 617 | static unsigned int sdebug_store_sectors; |
1da177e4 LT |
618 | static sector_t sdebug_capacity; /* in sectors */ |
619 | ||
620 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages | |
621 | may still need them */ | |
622 | static int sdebug_heads; /* heads per disk */ | |
623 | static int sdebug_cylinders_per; /* cylinders per surface */ | |
624 | static int sdebug_sectors_per; /* sectors per cylinder */ | |
625 | ||
1da177e4 LT |
626 | static LIST_HEAD(sdebug_host_list); |
627 | static DEFINE_SPINLOCK(sdebug_host_list_lock); | |
628 | ||
fd32119b | 629 | static unsigned char *fake_storep; /* ramdisk storage */ |
e18d8bea | 630 | static struct sd_dif_tuple *dif_storep; /* protection info */ |
44d92694 | 631 | static void *map_storep; /* provisioning map */ |
1da177e4 | 632 | |
44d92694 | 633 | static unsigned long map_size; |
cbf67842 DG |
634 | static int num_aborts; |
635 | static int num_dev_resets; | |
636 | static int num_target_resets; | |
637 | static int num_bus_resets; | |
638 | static int num_host_resets; | |
c6a44287 MP |
639 | static int dix_writes; |
640 | static int dix_reads; | |
641 | static int dif_errors; | |
1da177e4 | 642 | |
c4837394 DG |
643 | static int submit_queues = DEF_SUBMIT_QUEUES; /* > 1 for multi-queue (mq) */ |
644 | static struct sdebug_queue *sdebug_q_arr; /* ptr to array of submit queues */ | |
fd32119b | 645 | |
1da177e4 LT |
646 | static DEFINE_RWLOCK(atomic_rw); |
647 | ||
cbf67842 DG |
648 | static char sdebug_proc_name[] = MY_NAME; |
649 | static const char *my_name = MY_NAME; | |
1da177e4 | 650 | |
1da177e4 LT |
651 | static struct bus_type pseudo_lld_bus; |
652 | ||
653 | static struct device_driver sdebug_driverfs_driver = { | |
654 | .name = sdebug_proc_name, | |
655 | .bus = &pseudo_lld_bus, | |
1da177e4 LT |
656 | }; |
657 | ||
658 | static const int check_condition_result = | |
659 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | |
660 | ||
c6a44287 MP |
661 | static const int illegal_condition_result = |
662 | (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; | |
663 | ||
cbf67842 DG |
664 | static const int device_qfull_result = |
665 | (DID_OK << 16) | (COMMAND_COMPLETE << 8) | SAM_STAT_TASK_SET_FULL; | |
666 | ||
fd32119b | 667 | |
760f3b03 DG |
668 | /* Only do the extra work involved in logical block provisioning if one or |
669 | * more of the lbpu, lbpws or lbpws10 parameters are given and we are doing | |
670 | * real reads and writes (i.e. not skipping them for speed). | |
671 | */ | |
672 | static inline bool scsi_debug_lbp(void) | |
fd32119b DG |
673 | { |
674 | return 0 == sdebug_fake_rw && | |
675 | (sdebug_lbpu || sdebug_lbpws || sdebug_lbpws10); | |
676 | } | |
c65b1445 | 677 | |
14faa944 AM |
678 | static void *fake_store(unsigned long long lba) |
679 | { | |
680 | lba = do_div(lba, sdebug_store_sectors); | |
681 | ||
773642d9 | 682 | return fake_storep + lba * sdebug_sector_size; |
14faa944 AM |
683 | } |
684 | ||
685 | static struct sd_dif_tuple *dif_store(sector_t sector) | |
686 | { | |
49413112 | 687 | sector = sector_div(sector, sdebug_store_sectors); |
14faa944 AM |
688 | |
689 | return dif_storep + sector; | |
690 | } | |
691 | ||
8dea0d02 FT |
692 | static void sdebug_max_tgts_luns(void) |
693 | { | |
694 | struct sdebug_host_info *sdbg_host; | |
695 | struct Scsi_Host *hpnt; | |
696 | ||
697 | spin_lock(&sdebug_host_list_lock); | |
698 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
699 | hpnt = sdbg_host->shost; | |
700 | if ((hpnt->this_id >= 0) && | |
773642d9 DG |
701 | (sdebug_num_tgts > hpnt->this_id)) |
702 | hpnt->max_id = sdebug_num_tgts + 1; | |
8dea0d02 | 703 | else |
773642d9 DG |
704 | hpnt->max_id = sdebug_num_tgts; |
705 | /* sdebug_max_luns; */ | |
f2d3fd29 | 706 | hpnt->max_lun = SCSI_W_LUN_REPORT_LUNS + 1; |
8dea0d02 FT |
707 | } |
708 | spin_unlock(&sdebug_host_list_lock); | |
709 | } | |
710 | ||
22017ed2 DG |
711 | enum sdeb_cmd_data {SDEB_IN_DATA = 0, SDEB_IN_CDB = 1}; |
712 | ||
713 | /* Set in_bit to -1 to indicate no bit position of invalid field */ | |
fd32119b DG |
714 | static void mk_sense_invalid_fld(struct scsi_cmnd *scp, |
715 | enum sdeb_cmd_data c_d, | |
716 | int in_byte, int in_bit) | |
22017ed2 DG |
717 | { |
718 | unsigned char *sbuff; | |
719 | u8 sks[4]; | |
720 | int sl, asc; | |
721 | ||
722 | sbuff = scp->sense_buffer; | |
723 | if (!sbuff) { | |
724 | sdev_printk(KERN_ERR, scp->device, | |
725 | "%s: sense_buffer is NULL\n", __func__); | |
726 | return; | |
727 | } | |
728 | asc = c_d ? INVALID_FIELD_IN_CDB : INVALID_FIELD_IN_PARAM_LIST; | |
729 | memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); | |
773642d9 | 730 | scsi_build_sense_buffer(sdebug_dsense, sbuff, ILLEGAL_REQUEST, asc, 0); |
22017ed2 DG |
731 | memset(sks, 0, sizeof(sks)); |
732 | sks[0] = 0x80; | |
733 | if (c_d) | |
734 | sks[0] |= 0x40; | |
735 | if (in_bit >= 0) { | |
736 | sks[0] |= 0x8; | |
737 | sks[0] |= 0x7 & in_bit; | |
738 | } | |
739 | put_unaligned_be16(in_byte, sks + 1); | |
773642d9 | 740 | if (sdebug_dsense) { |
22017ed2 DG |
741 | sl = sbuff[7] + 8; |
742 | sbuff[7] = sl; | |
743 | sbuff[sl] = 0x2; | |
744 | sbuff[sl + 1] = 0x6; | |
745 | memcpy(sbuff + sl + 4, sks, 3); | |
746 | } else | |
747 | memcpy(sbuff + 15, sks, 3); | |
773642d9 | 748 | if (sdebug_verbose) |
22017ed2 DG |
749 | sdev_printk(KERN_INFO, scp->device, "%s: [sense_key,asc,ascq" |
750 | "]: [0x5,0x%x,0x0] %c byte=%d, bit=%d\n", | |
751 | my_name, asc, c_d ? 'C' : 'D', in_byte, in_bit); | |
752 | } | |
753 | ||
cbf67842 | 754 | static void mk_sense_buffer(struct scsi_cmnd *scp, int key, int asc, int asq) |
8dea0d02 FT |
755 | { |
756 | unsigned char *sbuff; | |
757 | ||
cbf67842 DG |
758 | sbuff = scp->sense_buffer; |
759 | if (!sbuff) { | |
760 | sdev_printk(KERN_ERR, scp->device, | |
761 | "%s: sense_buffer is NULL\n", __func__); | |
762 | return; | |
763 | } | |
764 | memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); | |
8dea0d02 | 765 | |
773642d9 | 766 | scsi_build_sense_buffer(sdebug_dsense, sbuff, key, asc, asq); |
8dea0d02 | 767 | |
773642d9 | 768 | if (sdebug_verbose) |
cbf67842 DG |
769 | sdev_printk(KERN_INFO, scp->device, |
770 | "%s: [sense_key,asc,ascq]: [0x%x,0x%x,0x%x]\n", | |
771 | my_name, key, asc, asq); | |
8dea0d02 | 772 | } |
1da177e4 | 773 | |
fd32119b | 774 | static void mk_sense_invalid_opcode(struct scsi_cmnd *scp) |
22017ed2 DG |
775 | { |
776 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_OPCODE, 0); | |
777 | } | |
778 | ||
1da177e4 LT |
779 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
780 | { | |
773642d9 | 781 | if (sdebug_verbose) { |
cbf67842 DG |
782 | if (0x1261 == cmd) |
783 | sdev_printk(KERN_INFO, dev, | |
784 | "%s: BLKFLSBUF [0x1261]\n", __func__); | |
785 | else if (0x5331 == cmd) | |
786 | sdev_printk(KERN_INFO, dev, | |
787 | "%s: CDROM_GET_CAPABILITY [0x5331]\n", | |
788 | __func__); | |
789 | else | |
790 | sdev_printk(KERN_INFO, dev, "%s: cmd=0x%x\n", | |
791 | __func__, cmd); | |
1da177e4 LT |
792 | } |
793 | return -EINVAL; | |
794 | /* return -ENOTTY; // correct return but upsets fdisk */ | |
795 | } | |
796 | ||
19c8ead7 EM |
797 | static void clear_luns_changed_on_target(struct sdebug_dev_info *devip) |
798 | { | |
799 | struct sdebug_host_info *sdhp; | |
800 | struct sdebug_dev_info *dp; | |
801 | ||
802 | spin_lock(&sdebug_host_list_lock); | |
803 | list_for_each_entry(sdhp, &sdebug_host_list, host_list) { | |
804 | list_for_each_entry(dp, &sdhp->dev_info_list, dev_list) { | |
805 | if ((devip->sdbg_host == dp->sdbg_host) && | |
806 | (devip->target == dp->target)) | |
807 | clear_bit(SDEBUG_UA_LUNS_CHANGED, dp->uas_bm); | |
808 | } | |
809 | } | |
810 | spin_unlock(&sdebug_host_list_lock); | |
811 | } | |
812 | ||
f46eb0e9 | 813 | static int make_ua(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
1da177e4 | 814 | { |
cbf67842 | 815 | int k; |
cbf67842 DG |
816 | |
817 | k = find_first_bit(devip->uas_bm, SDEBUG_NUM_UAS); | |
818 | if (k != SDEBUG_NUM_UAS) { | |
819 | const char *cp = NULL; | |
820 | ||
821 | switch (k) { | |
822 | case SDEBUG_UA_POR: | |
f46eb0e9 DG |
823 | mk_sense_buffer(scp, UNIT_ATTENTION, UA_RESET_ASC, |
824 | POWER_ON_RESET_ASCQ); | |
773642d9 | 825 | if (sdebug_verbose) |
cbf67842 DG |
826 | cp = "power on reset"; |
827 | break; | |
828 | case SDEBUG_UA_BUS_RESET: | |
f46eb0e9 DG |
829 | mk_sense_buffer(scp, UNIT_ATTENTION, UA_RESET_ASC, |
830 | BUS_RESET_ASCQ); | |
773642d9 | 831 | if (sdebug_verbose) |
cbf67842 DG |
832 | cp = "bus reset"; |
833 | break; | |
834 | case SDEBUG_UA_MODE_CHANGED: | |
f46eb0e9 DG |
835 | mk_sense_buffer(scp, UNIT_ATTENTION, UA_CHANGED_ASC, |
836 | MODE_CHANGED_ASCQ); | |
773642d9 | 837 | if (sdebug_verbose) |
cbf67842 DG |
838 | cp = "mode parameters changed"; |
839 | break; | |
0d01c5df | 840 | case SDEBUG_UA_CAPACITY_CHANGED: |
f46eb0e9 DG |
841 | mk_sense_buffer(scp, UNIT_ATTENTION, UA_CHANGED_ASC, |
842 | CAPACITY_CHANGED_ASCQ); | |
773642d9 | 843 | if (sdebug_verbose) |
0d01c5df | 844 | cp = "capacity data changed"; |
f49accf1 | 845 | break; |
acafd0b9 | 846 | case SDEBUG_UA_MICROCODE_CHANGED: |
f46eb0e9 | 847 | mk_sense_buffer(scp, UNIT_ATTENTION, |
b01f6f83 DG |
848 | TARGET_CHANGED_ASC, |
849 | MICROCODE_CHANGED_ASCQ); | |
773642d9 | 850 | if (sdebug_verbose) |
acafd0b9 EM |
851 | cp = "microcode has been changed"; |
852 | break; | |
853 | case SDEBUG_UA_MICROCODE_CHANGED_WO_RESET: | |
f46eb0e9 | 854 | mk_sense_buffer(scp, UNIT_ATTENTION, |
acafd0b9 EM |
855 | TARGET_CHANGED_ASC, |
856 | MICROCODE_CHANGED_WO_RESET_ASCQ); | |
773642d9 | 857 | if (sdebug_verbose) |
acafd0b9 EM |
858 | cp = "microcode has been changed without reset"; |
859 | break; | |
19c8ead7 EM |
860 | case SDEBUG_UA_LUNS_CHANGED: |
861 | /* | |
862 | * SPC-3 behavior is to report a UNIT ATTENTION with | |
863 | * ASC/ASCQ REPORTED LUNS DATA HAS CHANGED on every LUN | |
864 | * on the target, until a REPORT LUNS command is | |
865 | * received. SPC-4 behavior is to report it only once. | |
773642d9 | 866 | * NOTE: sdebug_scsi_level does not use the same |
19c8ead7 EM |
867 | * values as struct scsi_device->scsi_level. |
868 | */ | |
773642d9 | 869 | if (sdebug_scsi_level >= 6) /* SPC-4 and above */ |
19c8ead7 | 870 | clear_luns_changed_on_target(devip); |
f46eb0e9 | 871 | mk_sense_buffer(scp, UNIT_ATTENTION, |
19c8ead7 EM |
872 | TARGET_CHANGED_ASC, |
873 | LUNS_CHANGED_ASCQ); | |
773642d9 | 874 | if (sdebug_verbose) |
19c8ead7 EM |
875 | cp = "reported luns data has changed"; |
876 | break; | |
cbf67842 | 877 | default: |
773642d9 DG |
878 | pr_warn("unexpected unit attention code=%d\n", k); |
879 | if (sdebug_verbose) | |
cbf67842 DG |
880 | cp = "unknown"; |
881 | break; | |
882 | } | |
883 | clear_bit(k, devip->uas_bm); | |
773642d9 | 884 | if (sdebug_verbose) |
f46eb0e9 | 885 | sdev_printk(KERN_INFO, scp->device, |
cbf67842 DG |
886 | "%s reports: Unit attention: %s\n", |
887 | my_name, cp); | |
1da177e4 LT |
888 | return check_condition_result; |
889 | } | |
890 | return 0; | |
891 | } | |
892 | ||
fb0cc8d1 | 893 | /* Build SCSI "data-in" buffer. Returns 0 if ok else (DID_ERROR << 16). */ |
21a61829 | 894 | static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
1da177e4 LT |
895 | int arr_len) |
896 | { | |
21a61829 | 897 | int act_len; |
072d0bb3 | 898 | struct scsi_data_buffer *sdb = scsi_in(scp); |
1da177e4 | 899 | |
072d0bb3 | 900 | if (!sdb->length) |
1da177e4 | 901 | return 0; |
072d0bb3 | 902 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
773642d9 | 903 | return DID_ERROR << 16; |
21a61829 FT |
904 | |
905 | act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, | |
906 | arr, arr_len); | |
a4517511 | 907 | sdb->resid = scsi_bufflen(scp) - act_len; |
21a61829 | 908 | |
1da177e4 LT |
909 | return 0; |
910 | } | |
911 | ||
fb0cc8d1 DG |
912 | /* Partial build of SCSI "data-in" buffer. Returns 0 if ok else |
913 | * (DID_ERROR << 16). Can write to offset in data-in buffer. If multiple | |
914 | * calls, not required to write in ascending offset order. Assumes resid | |
915 | * set to scsi_bufflen() prior to any calls. | |
916 | */ | |
917 | static int p_fill_from_dev_buffer(struct scsi_cmnd *scp, const void *arr, | |
918 | int arr_len, unsigned int off_dst) | |
919 | { | |
920 | int act_len, n; | |
921 | struct scsi_data_buffer *sdb = scsi_in(scp); | |
922 | off_t skip = off_dst; | |
923 | ||
924 | if (sdb->length <= off_dst) | |
925 | return 0; | |
926 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) | |
927 | return DID_ERROR << 16; | |
928 | ||
929 | act_len = sg_pcopy_from_buffer(sdb->table.sgl, sdb->table.nents, | |
930 | arr, arr_len, skip); | |
931 | pr_debug("%s: off_dst=%u, scsi_bufflen=%u, act_len=%u, resid=%d\n", | |
932 | __func__, off_dst, scsi_bufflen(scp), act_len, sdb->resid); | |
933 | n = (int)scsi_bufflen(scp) - ((int)off_dst + act_len); | |
934 | sdb->resid = min(sdb->resid, n); | |
935 | return 0; | |
936 | } | |
937 | ||
938 | /* Fetches from SCSI "data-out" buffer. Returns number of bytes fetched into | |
939 | * 'arr' or -1 if error. | |
940 | */ | |
21a61829 FT |
941 | static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
942 | int arr_len) | |
1da177e4 | 943 | { |
21a61829 | 944 | if (!scsi_bufflen(scp)) |
1da177e4 | 945 | return 0; |
072d0bb3 | 946 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
1da177e4 | 947 | return -1; |
21a61829 FT |
948 | |
949 | return scsi_sg_copy_to_buffer(scp, arr, arr_len); | |
1da177e4 LT |
950 | } |
951 | ||
952 | ||
953 | static const char * inq_vendor_id = "Linux "; | |
954 | static const char * inq_product_id = "scsi_debug "; | |
773642d9 | 955 | static const char *inq_product_rev = "0186"; /* version less '.' */ |
1b37bd60 DG |
956 | /* Use some locally assigned NAAs for SAS addresses. */ |
957 | static const u64 naa3_comp_a = 0x3222222000000000ULL; | |
958 | static const u64 naa3_comp_b = 0x3333333000000000ULL; | |
959 | static const u64 naa3_comp_c = 0x3111111000000000ULL; | |
1da177e4 | 960 | |
cbf67842 | 961 | /* Device identification VPD page. Returns number of bytes placed in arr */ |
760f3b03 DG |
962 | static int inquiry_vpd_83(unsigned char *arr, int port_group_id, |
963 | int target_dev_id, int dev_id_num, | |
09ba24c1 DG |
964 | const char *dev_id_str, int dev_id_str_len, |
965 | const uuid_be *lu_name) | |
1da177e4 | 966 | { |
c65b1445 DG |
967 | int num, port_a; |
968 | char b[32]; | |
1da177e4 | 969 | |
c65b1445 | 970 | port_a = target_dev_id + 1; |
1da177e4 LT |
971 | /* T10 vendor identifier field format (faked) */ |
972 | arr[0] = 0x2; /* ASCII */ | |
973 | arr[1] = 0x1; | |
974 | arr[2] = 0x0; | |
975 | memcpy(&arr[4], inq_vendor_id, 8); | |
976 | memcpy(&arr[12], inq_product_id, 16); | |
977 | memcpy(&arr[28], dev_id_str, dev_id_str_len); | |
978 | num = 8 + 16 + dev_id_str_len; | |
979 | arr[3] = num; | |
980 | num += 4; | |
c65b1445 | 981 | if (dev_id_num >= 0) { |
09ba24c1 DG |
982 | if (sdebug_uuid_ctl) { |
983 | /* Locally assigned UUID */ | |
984 | arr[num++] = 0x1; /* binary (not necessarily sas) */ | |
985 | arr[num++] = 0xa; /* PIV=0, lu, naa */ | |
986 | arr[num++] = 0x0; | |
987 | arr[num++] = 0x12; | |
988 | arr[num++] = 0x10; /* uuid type=1, locally assigned */ | |
989 | arr[num++] = 0x0; | |
990 | memcpy(arr + num, lu_name, 16); | |
991 | num += 16; | |
992 | } else { | |
1b37bd60 | 993 | /* NAA-3, Logical unit identifier (binary) */ |
09ba24c1 DG |
994 | arr[num++] = 0x1; /* binary (not necessarily sas) */ |
995 | arr[num++] = 0x3; /* PIV=0, lu, naa */ | |
996 | arr[num++] = 0x0; | |
997 | arr[num++] = 0x8; | |
1b37bd60 | 998 | put_unaligned_be64(naa3_comp_b + dev_id_num, arr + num); |
09ba24c1 DG |
999 | num += 8; |
1000 | } | |
c65b1445 DG |
1001 | /* Target relative port number */ |
1002 | arr[num++] = 0x61; /* proto=sas, binary */ | |
1003 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ | |
1004 | arr[num++] = 0x0; /* reserved */ | |
1005 | arr[num++] = 0x4; /* length */ | |
1006 | arr[num++] = 0x0; /* reserved */ | |
1007 | arr[num++] = 0x0; /* reserved */ | |
1008 | arr[num++] = 0x0; | |
1009 | arr[num++] = 0x1; /* relative port A */ | |
1010 | } | |
1b37bd60 | 1011 | /* NAA-3, Target port identifier */ |
c65b1445 DG |
1012 | arr[num++] = 0x61; /* proto=sas, binary */ |
1013 | arr[num++] = 0x93; /* piv=1, target port, naa */ | |
1014 | arr[num++] = 0x0; | |
1015 | arr[num++] = 0x8; | |
1b37bd60 | 1016 | put_unaligned_be64(naa3_comp_a + port_a, arr + num); |
773642d9 | 1017 | num += 8; |
1b37bd60 | 1018 | /* NAA-3, Target port group identifier */ |
5a09e398 HR |
1019 | arr[num++] = 0x61; /* proto=sas, binary */ |
1020 | arr[num++] = 0x95; /* piv=1, target port group id */ | |
1021 | arr[num++] = 0x0; | |
1022 | arr[num++] = 0x4; | |
1023 | arr[num++] = 0; | |
1024 | arr[num++] = 0; | |
773642d9 DG |
1025 | put_unaligned_be16(port_group_id, arr + num); |
1026 | num += 2; | |
1b37bd60 | 1027 | /* NAA-3, Target device identifier */ |
c65b1445 DG |
1028 | arr[num++] = 0x61; /* proto=sas, binary */ |
1029 | arr[num++] = 0xa3; /* piv=1, target device, naa */ | |
1030 | arr[num++] = 0x0; | |
1031 | arr[num++] = 0x8; | |
1b37bd60 | 1032 | put_unaligned_be64(naa3_comp_a + target_dev_id, arr + num); |
773642d9 | 1033 | num += 8; |
c65b1445 DG |
1034 | /* SCSI name string: Target device identifier */ |
1035 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ | |
1036 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ | |
1037 | arr[num++] = 0x0; | |
1038 | arr[num++] = 24; | |
1b37bd60 | 1039 | memcpy(arr + num, "naa.32222220", 12); |
c65b1445 DG |
1040 | num += 12; |
1041 | snprintf(b, sizeof(b), "%08X", target_dev_id); | |
1042 | memcpy(arr + num, b, 8); | |
1043 | num += 8; | |
1044 | memset(arr + num, 0, 4); | |
1045 | num += 4; | |
1046 | return num; | |
1047 | } | |
1048 | ||
c65b1445 DG |
1049 | static unsigned char vpd84_data[] = { |
1050 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, | |
1051 | 0x22,0x22,0x22,0x0,0xbb,0x1, | |
1052 | 0x22,0x22,0x22,0x0,0xbb,0x2, | |
1053 | }; | |
1054 | ||
cbf67842 | 1055 | /* Software interface identification VPD page */ |
760f3b03 | 1056 | static int inquiry_vpd_84(unsigned char *arr) |
c65b1445 DG |
1057 | { |
1058 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); | |
1059 | return sizeof(vpd84_data); | |
1060 | } | |
1061 | ||
cbf67842 | 1062 | /* Management network addresses VPD page */ |
760f3b03 | 1063 | static int inquiry_vpd_85(unsigned char *arr) |
c65b1445 DG |
1064 | { |
1065 | int num = 0; | |
1066 | const char * na1 = "https://www.kernel.org/config"; | |
1067 | const char * na2 = "http://www.kernel.org/log"; | |
1068 | int plen, olen; | |
1069 | ||
1070 | arr[num++] = 0x1; /* lu, storage config */ | |
1071 | arr[num++] = 0x0; /* reserved */ | |
1072 | arr[num++] = 0x0; | |
1073 | olen = strlen(na1); | |
1074 | plen = olen + 1; | |
1075 | if (plen % 4) | |
1076 | plen = ((plen / 4) + 1) * 4; | |
1077 | arr[num++] = plen; /* length, null termianted, padded */ | |
1078 | memcpy(arr + num, na1, olen); | |
1079 | memset(arr + num + olen, 0, plen - olen); | |
1080 | num += plen; | |
1081 | ||
1082 | arr[num++] = 0x4; /* lu, logging */ | |
1083 | arr[num++] = 0x0; /* reserved */ | |
1084 | arr[num++] = 0x0; | |
1085 | olen = strlen(na2); | |
1086 | plen = olen + 1; | |
1087 | if (plen % 4) | |
1088 | plen = ((plen / 4) + 1) * 4; | |
1089 | arr[num++] = plen; /* length, null terminated, padded */ | |
1090 | memcpy(arr + num, na2, olen); | |
1091 | memset(arr + num + olen, 0, plen - olen); | |
1092 | num += plen; | |
1093 | ||
1094 | return num; | |
1095 | } | |
1096 | ||
1097 | /* SCSI ports VPD page */ | |
760f3b03 | 1098 | static int inquiry_vpd_88(unsigned char *arr, int target_dev_id) |
c65b1445 DG |
1099 | { |
1100 | int num = 0; | |
1101 | int port_a, port_b; | |
1102 | ||
1103 | port_a = target_dev_id + 1; | |
1104 | port_b = port_a + 1; | |
1105 | arr[num++] = 0x0; /* reserved */ | |
1106 | arr[num++] = 0x0; /* reserved */ | |
1107 | arr[num++] = 0x0; | |
1108 | arr[num++] = 0x1; /* relative port 1 (primary) */ | |
1109 | memset(arr + num, 0, 6); | |
1110 | num += 6; | |
1111 | arr[num++] = 0x0; | |
1112 | arr[num++] = 12; /* length tp descriptor */ | |
1113 | /* naa-5 target port identifier (A) */ | |
1114 | arr[num++] = 0x61; /* proto=sas, binary */ | |
1115 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
1116 | arr[num++] = 0x0; /* reserved */ | |
1117 | arr[num++] = 0x8; /* length */ | |
1b37bd60 | 1118 | put_unaligned_be64(naa3_comp_a + port_a, arr + num); |
773642d9 | 1119 | num += 8; |
c65b1445 DG |
1120 | arr[num++] = 0x0; /* reserved */ |
1121 | arr[num++] = 0x0; /* reserved */ | |
1122 | arr[num++] = 0x0; | |
1123 | arr[num++] = 0x2; /* relative port 2 (secondary) */ | |
1124 | memset(arr + num, 0, 6); | |
1125 | num += 6; | |
1126 | arr[num++] = 0x0; | |
1127 | arr[num++] = 12; /* length tp descriptor */ | |
1128 | /* naa-5 target port identifier (B) */ | |
1129 | arr[num++] = 0x61; /* proto=sas, binary */ | |
1130 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
1131 | arr[num++] = 0x0; /* reserved */ | |
1132 | arr[num++] = 0x8; /* length */ | |
1b37bd60 | 1133 | put_unaligned_be64(naa3_comp_a + port_b, arr + num); |
773642d9 | 1134 | num += 8; |
c65b1445 DG |
1135 | |
1136 | return num; | |
1137 | } | |
1138 | ||
1139 | ||
1140 | static unsigned char vpd89_data[] = { | |
1141 | /* from 4th byte */ 0,0,0,0, | |
1142 | 'l','i','n','u','x',' ',' ',' ', | |
1143 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', | |
1144 | '1','2','3','4', | |
1145 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, | |
1146 | 0xec,0,0,0, | |
1147 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, | |
1148 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, | |
1149 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, | |
1150 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, | |
1151 | 0x53,0x41, | |
1152 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
1153 | 0x20,0x20, | |
1154 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
1155 | 0x10,0x80, | |
1156 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, | |
1157 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, | |
1158 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, | |
1159 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, | |
1160 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, | |
1161 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, | |
1162 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, | |
1163 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1164 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1165 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1166 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, | |
1167 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, | |
1168 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, | |
1169 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, | |
1170 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1171 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1172 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1173 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1174 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1175 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1176 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1177 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1178 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1179 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1180 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1181 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, | |
1182 | }; | |
1183 | ||
cbf67842 | 1184 | /* ATA Information VPD page */ |
760f3b03 | 1185 | static int inquiry_vpd_89(unsigned char *arr) |
c65b1445 DG |
1186 | { |
1187 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); | |
1188 | return sizeof(vpd89_data); | |
1189 | } | |
1190 | ||
1191 | ||
1192 | static unsigned char vpdb0_data[] = { | |
1e49f785 DG |
1193 | /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64, |
1194 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1195 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1196 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
c65b1445 DG |
1197 | }; |
1198 | ||
cbf67842 | 1199 | /* Block limits VPD page (SBC-3) */ |
760f3b03 | 1200 | static int inquiry_vpd_b0(unsigned char *arr) |
c65b1445 | 1201 | { |
ea61fca5 MP |
1202 | unsigned int gran; |
1203 | ||
c65b1445 | 1204 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
e308b3d1 MP |
1205 | |
1206 | /* Optimal transfer length granularity */ | |
773642d9 DG |
1207 | gran = 1 << sdebug_physblk_exp; |
1208 | put_unaligned_be16(gran, arr + 2); | |
e308b3d1 MP |
1209 | |
1210 | /* Maximum Transfer Length */ | |
773642d9 DG |
1211 | if (sdebug_store_sectors > 0x400) |
1212 | put_unaligned_be32(sdebug_store_sectors, arr + 4); | |
44d92694 | 1213 | |
e308b3d1 | 1214 | /* Optimal Transfer Length */ |
773642d9 | 1215 | put_unaligned_be32(sdebug_opt_blks, &arr[8]); |
e308b3d1 | 1216 | |
773642d9 | 1217 | if (sdebug_lbpu) { |
e308b3d1 | 1218 | /* Maximum Unmap LBA Count */ |
773642d9 | 1219 | put_unaligned_be32(sdebug_unmap_max_blocks, &arr[16]); |
e308b3d1 MP |
1220 | |
1221 | /* Maximum Unmap Block Descriptor Count */ | |
773642d9 | 1222 | put_unaligned_be32(sdebug_unmap_max_desc, &arr[20]); |
44d92694 MP |
1223 | } |
1224 | ||
e308b3d1 | 1225 | /* Unmap Granularity Alignment */ |
773642d9 DG |
1226 | if (sdebug_unmap_alignment) { |
1227 | put_unaligned_be32(sdebug_unmap_alignment, &arr[28]); | |
44d92694 MP |
1228 | arr[28] |= 0x80; /* UGAVALID */ |
1229 | } | |
1230 | ||
e308b3d1 | 1231 | /* Optimal Unmap Granularity */ |
773642d9 | 1232 | put_unaligned_be32(sdebug_unmap_granularity, &arr[24]); |
6014759c | 1233 | |
5b94e232 | 1234 | /* Maximum WRITE SAME Length */ |
773642d9 | 1235 | put_unaligned_be64(sdebug_write_same_length, &arr[32]); |
5b94e232 MP |
1236 | |
1237 | return 0x3c; /* Mandatory page length for Logical Block Provisioning */ | |
44d92694 | 1238 | |
c65b1445 | 1239 | return sizeof(vpdb0_data); |
1da177e4 LT |
1240 | } |
1241 | ||
1e49f785 | 1242 | /* Block device characteristics VPD page (SBC-3) */ |
760f3b03 | 1243 | static int inquiry_vpd_b1(unsigned char *arr) |
eac6e8e4 MW |
1244 | { |
1245 | memset(arr, 0, 0x3c); | |
1246 | arr[0] = 0; | |
1e49f785 DG |
1247 | arr[1] = 1; /* non rotating medium (e.g. solid state) */ |
1248 | arr[2] = 0; | |
1249 | arr[3] = 5; /* less than 1.8" */ | |
eac6e8e4 MW |
1250 | |
1251 | return 0x3c; | |
1252 | } | |
1da177e4 | 1253 | |
760f3b03 DG |
1254 | /* Logical block provisioning VPD page (SBC-4) */ |
1255 | static int inquiry_vpd_b2(unsigned char *arr) | |
6014759c | 1256 | { |
3f0bc3b3 | 1257 | memset(arr, 0, 0x4); |
6014759c | 1258 | arr[0] = 0; /* threshold exponent */ |
773642d9 | 1259 | if (sdebug_lbpu) |
6014759c | 1260 | arr[1] = 1 << 7; |
773642d9 | 1261 | if (sdebug_lbpws) |
6014759c | 1262 | arr[1] |= 1 << 6; |
773642d9 | 1263 | if (sdebug_lbpws10) |
5b94e232 | 1264 | arr[1] |= 1 << 5; |
760f3b03 DG |
1265 | if (sdebug_lbprz && scsi_debug_lbp()) |
1266 | arr[1] |= (sdebug_lbprz & 0x7) << 2; /* sbc4r07 and later */ | |
1267 | /* anc_sup=0; dp=0 (no provisioning group descriptor) */ | |
1268 | /* minimum_percentage=0; provisioning_type=0 (unknown) */ | |
1269 | /* threshold_percentage=0 */ | |
3f0bc3b3 | 1270 | return 0x4; |
6014759c MP |
1271 | } |
1272 | ||
1da177e4 | 1273 | #define SDEBUG_LONG_INQ_SZ 96 |
c65b1445 | 1274 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
1da177e4 | 1275 | |
c2248fc9 | 1276 | static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
1da177e4 LT |
1277 | { |
1278 | unsigned char pq_pdt; | |
5a09e398 | 1279 | unsigned char * arr; |
01123ef4 | 1280 | unsigned char *cmd = scp->cmnd; |
5a09e398 | 1281 | int alloc_len, n, ret; |
760f3b03 | 1282 | bool have_wlun, is_disk; |
1da177e4 | 1283 | |
773642d9 | 1284 | alloc_len = get_unaligned_be16(cmd + 3); |
6f3cbf55 DG |
1285 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
1286 | if (! arr) | |
1287 | return DID_REQUEUE << 16; | |
760f3b03 | 1288 | is_disk = (sdebug_ptype == TYPE_DISK); |
b01f6f83 | 1289 | have_wlun = scsi_is_wlun(scp->device->lun); |
c2248fc9 | 1290 | if (have_wlun) |
b01f6f83 DG |
1291 | pq_pdt = TYPE_WLUN; /* present, wlun */ |
1292 | else if (sdebug_no_lun_0 && (devip->lun == SDEBUG_LUN_0_VAL)) | |
1293 | pq_pdt = 0x7f; /* not present, PQ=3, PDT=0x1f */ | |
c65b1445 | 1294 | else |
773642d9 | 1295 | pq_pdt = (sdebug_ptype & 0x1f); |
1da177e4 LT |
1296 | arr[0] = pq_pdt; |
1297 | if (0x2 & cmd[1]) { /* CMDDT bit set */ | |
22017ed2 | 1298 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 1); |
5a09e398 | 1299 | kfree(arr); |
1da177e4 LT |
1300 | return check_condition_result; |
1301 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ | |
5a09e398 | 1302 | int lu_id_num, port_group_id, target_dev_id, len; |
c65b1445 DG |
1303 | char lu_id_str[6]; |
1304 | int host_no = devip->sdbg_host->shost->host_no; | |
1da177e4 | 1305 | |
5a09e398 HR |
1306 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
1307 | (devip->channel & 0x7f); | |
b01f6f83 | 1308 | if (sdebug_vpd_use_hostno == 0) |
23183910 | 1309 | host_no = 0; |
c2248fc9 | 1310 | lu_id_num = have_wlun ? -1 : (((host_no + 1) * 2000) + |
c65b1445 DG |
1311 | (devip->target * 1000) + devip->lun); |
1312 | target_dev_id = ((host_no + 1) * 2000) + | |
1313 | (devip->target * 1000) - 3; | |
1314 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); | |
1da177e4 | 1315 | if (0 == cmd[2]) { /* supported vital product data pages */ |
c65b1445 DG |
1316 | arr[1] = cmd[2]; /*sanity */ |
1317 | n = 4; | |
1318 | arr[n++] = 0x0; /* this page */ | |
1319 | arr[n++] = 0x80; /* unit serial number */ | |
1320 | arr[n++] = 0x83; /* device identification */ | |
1321 | arr[n++] = 0x84; /* software interface ident. */ | |
1322 | arr[n++] = 0x85; /* management network addresses */ | |
1323 | arr[n++] = 0x86; /* extended inquiry */ | |
1324 | arr[n++] = 0x87; /* mode page policy */ | |
1325 | arr[n++] = 0x88; /* SCSI ports */ | |
760f3b03 DG |
1326 | if (is_disk) { /* SBC only */ |
1327 | arr[n++] = 0x89; /* ATA information */ | |
1328 | arr[n++] = 0xb0; /* Block limits */ | |
1329 | arr[n++] = 0xb1; /* Block characteristics */ | |
1330 | arr[n++] = 0xb2; /* Logical Block Prov */ | |
1331 | } | |
c65b1445 | 1332 | arr[3] = n - 4; /* number of supported VPD pages */ |
1da177e4 | 1333 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
c65b1445 | 1334 | arr[1] = cmd[2]; /*sanity */ |
1da177e4 | 1335 | arr[3] = len; |
c65b1445 | 1336 | memcpy(&arr[4], lu_id_str, len); |
1da177e4 | 1337 | } else if (0x83 == cmd[2]) { /* device identification */ |
c65b1445 | 1338 | arr[1] = cmd[2]; /*sanity */ |
760f3b03 DG |
1339 | arr[3] = inquiry_vpd_83(&arr[4], port_group_id, |
1340 | target_dev_id, lu_id_num, | |
09ba24c1 DG |
1341 | lu_id_str, len, |
1342 | &devip->lu_name); | |
c65b1445 DG |
1343 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
1344 | arr[1] = cmd[2]; /*sanity */ | |
760f3b03 | 1345 | arr[3] = inquiry_vpd_84(&arr[4]); |
c65b1445 DG |
1346 | } else if (0x85 == cmd[2]) { /* Management network addresses */ |
1347 | arr[1] = cmd[2]; /*sanity */ | |
760f3b03 | 1348 | arr[3] = inquiry_vpd_85(&arr[4]); |
c65b1445 DG |
1349 | } else if (0x86 == cmd[2]) { /* extended inquiry */ |
1350 | arr[1] = cmd[2]; /*sanity */ | |
1351 | arr[3] = 0x3c; /* number of following entries */ | |
773642d9 | 1352 | if (sdebug_dif == SD_DIF_TYPE3_PROTECTION) |
c6a44287 | 1353 | arr[4] = 0x4; /* SPT: GRD_CHK:1 */ |
760f3b03 | 1354 | else if (have_dif_prot) |
c6a44287 MP |
1355 | arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ |
1356 | else | |
1357 | arr[4] = 0x0; /* no protection stuff */ | |
c65b1445 DG |
1358 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
1359 | } else if (0x87 == cmd[2]) { /* mode page policy */ | |
1360 | arr[1] = cmd[2]; /*sanity */ | |
1361 | arr[3] = 0x8; /* number of following entries */ | |
1362 | arr[4] = 0x2; /* disconnect-reconnect mp */ | |
1363 | arr[6] = 0x80; /* mlus, shared */ | |
1364 | arr[8] = 0x18; /* protocol specific lu */ | |
1365 | arr[10] = 0x82; /* mlus, per initiator port */ | |
1366 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ | |
1367 | arr[1] = cmd[2]; /*sanity */ | |
760f3b03 DG |
1368 | arr[3] = inquiry_vpd_88(&arr[4], target_dev_id); |
1369 | } else if (is_disk && 0x89 == cmd[2]) { /* ATA information */ | |
c65b1445 | 1370 | arr[1] = cmd[2]; /*sanity */ |
760f3b03 | 1371 | n = inquiry_vpd_89(&arr[4]); |
773642d9 | 1372 | put_unaligned_be16(n, arr + 2); |
760f3b03 | 1373 | } else if (is_disk && 0xb0 == cmd[2]) { /* Block limits */ |
c65b1445 | 1374 | arr[1] = cmd[2]; /*sanity */ |
760f3b03 DG |
1375 | arr[3] = inquiry_vpd_b0(&arr[4]); |
1376 | } else if (is_disk && 0xb1 == cmd[2]) { /* Block char. */ | |
eac6e8e4 | 1377 | arr[1] = cmd[2]; /*sanity */ |
760f3b03 DG |
1378 | arr[3] = inquiry_vpd_b1(&arr[4]); |
1379 | } else if (is_disk && 0xb2 == cmd[2]) { /* LB Prov. */ | |
6014759c | 1380 | arr[1] = cmd[2]; /*sanity */ |
760f3b03 | 1381 | arr[3] = inquiry_vpd_b2(&arr[4]); |
1da177e4 | 1382 | } else { |
22017ed2 | 1383 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); |
5a09e398 | 1384 | kfree(arr); |
1da177e4 LT |
1385 | return check_condition_result; |
1386 | } | |
773642d9 | 1387 | len = min(get_unaligned_be16(arr + 2) + 4, alloc_len); |
5a09e398 | 1388 | ret = fill_from_dev_buffer(scp, arr, |
c65b1445 | 1389 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
5a09e398 HR |
1390 | kfree(arr); |
1391 | return ret; | |
1da177e4 LT |
1392 | } |
1393 | /* drops through here for a standard inquiry */ | |
773642d9 DG |
1394 | arr[1] = sdebug_removable ? 0x80 : 0; /* Removable disk */ |
1395 | arr[2] = sdebug_scsi_level; | |
1da177e4 LT |
1396 | arr[3] = 2; /* response_data_format==2 */ |
1397 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; | |
f46eb0e9 | 1398 | arr[5] = (int)have_dif_prot; /* PROTECT bit */ |
b01f6f83 | 1399 | if (sdebug_vpd_use_hostno == 0) |
5a09e398 | 1400 | arr[5] = 0x10; /* claim: implicit TGPS */ |
c65b1445 | 1401 | arr[6] = 0x10; /* claim: MultiP */ |
1da177e4 | 1402 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
c65b1445 | 1403 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
1da177e4 LT |
1404 | memcpy(&arr[8], inq_vendor_id, 8); |
1405 | memcpy(&arr[16], inq_product_id, 16); | |
1406 | memcpy(&arr[32], inq_product_rev, 4); | |
1407 | /* version descriptors (2 bytes each) follow */ | |
760f3b03 DG |
1408 | put_unaligned_be16(0xc0, arr + 58); /* SAM-6 no version claimed */ |
1409 | put_unaligned_be16(0x5c0, arr + 60); /* SPC-5 no version claimed */ | |
c65b1445 | 1410 | n = 62; |
760f3b03 DG |
1411 | if (is_disk) { /* SBC-4 no version claimed */ |
1412 | put_unaligned_be16(0x600, arr + n); | |
1413 | n += 2; | |
1414 | } else if (sdebug_ptype == TYPE_TAPE) { /* SSC-4 rev 3 */ | |
1415 | put_unaligned_be16(0x525, arr + n); | |
1416 | n += 2; | |
1da177e4 | 1417 | } |
760f3b03 | 1418 | put_unaligned_be16(0x2100, arr + n); /* SPL-4 no version claimed */ |
5a09e398 | 1419 | ret = fill_from_dev_buffer(scp, arr, |
1da177e4 | 1420 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
5a09e398 HR |
1421 | kfree(arr); |
1422 | return ret; | |
1da177e4 LT |
1423 | } |
1424 | ||
fd32119b DG |
1425 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
1426 | 0, 0, 0x0, 0x0}; | |
1427 | ||
1da177e4 LT |
1428 | static int resp_requests(struct scsi_cmnd * scp, |
1429 | struct sdebug_dev_info * devip) | |
1430 | { | |
1431 | unsigned char * sbuff; | |
01123ef4 | 1432 | unsigned char *cmd = scp->cmnd; |
cbf67842 | 1433 | unsigned char arr[SCSI_SENSE_BUFFERSIZE]; |
2492fc09 | 1434 | bool dsense; |
1da177e4 LT |
1435 | int len = 18; |
1436 | ||
c65b1445 | 1437 | memset(arr, 0, sizeof(arr)); |
c2248fc9 | 1438 | dsense = !!(cmd[1] & 1); |
cbf67842 | 1439 | sbuff = scp->sense_buffer; |
c65b1445 | 1440 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
c2248fc9 | 1441 | if (dsense) { |
c65b1445 DG |
1442 | arr[0] = 0x72; |
1443 | arr[1] = 0x0; /* NO_SENSE in sense_key */ | |
1444 | arr[2] = THRESHOLD_EXCEEDED; | |
1445 | arr[3] = 0xff; /* TEST set and MRIE==6 */ | |
c2248fc9 | 1446 | len = 8; |
c65b1445 DG |
1447 | } else { |
1448 | arr[0] = 0x70; | |
1449 | arr[2] = 0x0; /* NO_SENSE in sense_key */ | |
1450 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
1451 | arr[12] = THRESHOLD_EXCEEDED; | |
1452 | arr[13] = 0xff; /* TEST set and MRIE==6 */ | |
1453 | } | |
c65b1445 | 1454 | } else { |
cbf67842 | 1455 | memcpy(arr, sbuff, SCSI_SENSE_BUFFERSIZE); |
773642d9 | 1456 | if (arr[0] >= 0x70 && dsense == sdebug_dsense) |
c2248fc9 DG |
1457 | ; /* have sense and formats match */ |
1458 | else if (arr[0] <= 0x70) { | |
1459 | if (dsense) { | |
1460 | memset(arr, 0, 8); | |
1461 | arr[0] = 0x72; | |
1462 | len = 8; | |
1463 | } else { | |
1464 | memset(arr, 0, 18); | |
1465 | arr[0] = 0x70; | |
1466 | arr[7] = 0xa; | |
1467 | } | |
1468 | } else if (dsense) { | |
1469 | memset(arr, 0, 8); | |
c65b1445 DG |
1470 | arr[0] = 0x72; |
1471 | arr[1] = sbuff[2]; /* sense key */ | |
1472 | arr[2] = sbuff[12]; /* asc */ | |
1473 | arr[3] = sbuff[13]; /* ascq */ | |
1474 | len = 8; | |
c2248fc9 DG |
1475 | } else { |
1476 | memset(arr, 0, 18); | |
1477 | arr[0] = 0x70; | |
1478 | arr[2] = sbuff[1]; | |
1479 | arr[7] = 0xa; | |
1480 | arr[12] = sbuff[1]; | |
1481 | arr[13] = sbuff[3]; | |
c65b1445 | 1482 | } |
c2248fc9 | 1483 | |
c65b1445 | 1484 | } |
cbf67842 | 1485 | mk_sense_buffer(scp, 0, NO_ADDITIONAL_SENSE, 0); |
1da177e4 LT |
1486 | return fill_from_dev_buffer(scp, arr, len); |
1487 | } | |
1488 | ||
c65b1445 DG |
1489 | static int resp_start_stop(struct scsi_cmnd * scp, |
1490 | struct sdebug_dev_info * devip) | |
1491 | { | |
01123ef4 | 1492 | unsigned char *cmd = scp->cmnd; |
c4837394 | 1493 | int power_cond, stop; |
c65b1445 | 1494 | |
c65b1445 DG |
1495 | power_cond = (cmd[4] & 0xf0) >> 4; |
1496 | if (power_cond) { | |
22017ed2 | 1497 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, 7); |
c65b1445 DG |
1498 | return check_condition_result; |
1499 | } | |
c4837394 DG |
1500 | stop = !(cmd[4] & 1); |
1501 | atomic_xchg(&devip->stopped, stop); | |
c65b1445 DG |
1502 | return 0; |
1503 | } | |
1504 | ||
28898873 FT |
1505 | static sector_t get_sdebug_capacity(void) |
1506 | { | |
773642d9 DG |
1507 | static const unsigned int gibibyte = 1073741824; |
1508 | ||
1509 | if (sdebug_virtual_gb > 0) | |
1510 | return (sector_t)sdebug_virtual_gb * | |
1511 | (gibibyte / sdebug_sector_size); | |
28898873 FT |
1512 | else |
1513 | return sdebug_store_sectors; | |
1514 | } | |
1515 | ||
1da177e4 LT |
1516 | #define SDEBUG_READCAP_ARR_SZ 8 |
1517 | static int resp_readcap(struct scsi_cmnd * scp, | |
1518 | struct sdebug_dev_info * devip) | |
1519 | { | |
1520 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; | |
c65b1445 | 1521 | unsigned int capac; |
1da177e4 | 1522 | |
c65b1445 | 1523 | /* following just in case virtual_gb changed */ |
28898873 | 1524 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 | 1525 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
c65b1445 DG |
1526 | if (sdebug_capacity < 0xffffffff) { |
1527 | capac = (unsigned int)sdebug_capacity - 1; | |
773642d9 DG |
1528 | put_unaligned_be32(capac, arr + 0); |
1529 | } else | |
1530 | put_unaligned_be32(0xffffffff, arr + 0); | |
1531 | put_unaligned_be16(sdebug_sector_size, arr + 6); | |
1da177e4 LT |
1532 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
1533 | } | |
1534 | ||
c65b1445 DG |
1535 | #define SDEBUG_READCAP16_ARR_SZ 32 |
1536 | static int resp_readcap16(struct scsi_cmnd * scp, | |
1537 | struct sdebug_dev_info * devip) | |
1538 | { | |
01123ef4 | 1539 | unsigned char *cmd = scp->cmnd; |
c65b1445 | 1540 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; |
773642d9 | 1541 | int alloc_len; |
c65b1445 | 1542 | |
773642d9 | 1543 | alloc_len = get_unaligned_be32(cmd + 10); |
c65b1445 | 1544 | /* following just in case virtual_gb changed */ |
28898873 | 1545 | sdebug_capacity = get_sdebug_capacity(); |
c65b1445 | 1546 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
773642d9 DG |
1547 | put_unaligned_be64((u64)(sdebug_capacity - 1), arr + 0); |
1548 | put_unaligned_be32(sdebug_sector_size, arr + 8); | |
1549 | arr[13] = sdebug_physblk_exp & 0xf; | |
1550 | arr[14] = (sdebug_lowest_aligned >> 8) & 0x3f; | |
44d92694 | 1551 | |
be1dd78d | 1552 | if (scsi_debug_lbp()) { |
5b94e232 | 1553 | arr[14] |= 0x80; /* LBPME */ |
760f3b03 DG |
1554 | /* from sbc4r07, this LBPRZ field is 1 bit, but the LBPRZ in |
1555 | * the LB Provisioning VPD page is 3 bits. Note that lbprz=2 | |
1556 | * in the wider field maps to 0 in this field. | |
1557 | */ | |
1558 | if (sdebug_lbprz & 1) /* precisely what the draft requires */ | |
1559 | arr[14] |= 0x40; | |
be1dd78d | 1560 | } |
44d92694 | 1561 | |
773642d9 | 1562 | arr[15] = sdebug_lowest_aligned & 0xff; |
c6a44287 | 1563 | |
760f3b03 | 1564 | if (have_dif_prot) { |
773642d9 | 1565 | arr[12] = (sdebug_dif - 1) << 1; /* P_TYPE */ |
c6a44287 MP |
1566 | arr[12] |= 1; /* PROT_EN */ |
1567 | } | |
1568 | ||
c65b1445 DG |
1569 | return fill_from_dev_buffer(scp, arr, |
1570 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); | |
1571 | } | |
1572 | ||
5a09e398 HR |
1573 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
1574 | ||
1575 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, | |
1576 | struct sdebug_dev_info * devip) | |
1577 | { | |
01123ef4 | 1578 | unsigned char *cmd = scp->cmnd; |
5a09e398 HR |
1579 | unsigned char * arr; |
1580 | int host_no = devip->sdbg_host->shost->host_no; | |
1581 | int n, ret, alen, rlen; | |
1582 | int port_group_a, port_group_b, port_a, port_b; | |
1583 | ||
773642d9 | 1584 | alen = get_unaligned_be32(cmd + 6); |
6f3cbf55 DG |
1585 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
1586 | if (! arr) | |
1587 | return DID_REQUEUE << 16; | |
5a09e398 HR |
1588 | /* |
1589 | * EVPD page 0x88 states we have two ports, one | |
1590 | * real and a fake port with no device connected. | |
1591 | * So we create two port groups with one port each | |
1592 | * and set the group with port B to unavailable. | |
1593 | */ | |
1594 | port_a = 0x1; /* relative port A */ | |
1595 | port_b = 0x2; /* relative port B */ | |
1596 | port_group_a = (((host_no + 1) & 0x7f) << 8) + | |
773642d9 | 1597 | (devip->channel & 0x7f); |
5a09e398 | 1598 | port_group_b = (((host_no + 1) & 0x7f) << 8) + |
773642d9 | 1599 | (devip->channel & 0x7f) + 0x80; |
5a09e398 HR |
1600 | |
1601 | /* | |
1602 | * The asymmetric access state is cycled according to the host_id. | |
1603 | */ | |
1604 | n = 4; | |
b01f6f83 | 1605 | if (sdebug_vpd_use_hostno == 0) { |
773642d9 DG |
1606 | arr[n++] = host_no % 3; /* Asymm access state */ |
1607 | arr[n++] = 0x0F; /* claim: all states are supported */ | |
5a09e398 | 1608 | } else { |
773642d9 DG |
1609 | arr[n++] = 0x0; /* Active/Optimized path */ |
1610 | arr[n++] = 0x01; /* only support active/optimized paths */ | |
5a09e398 | 1611 | } |
773642d9 DG |
1612 | put_unaligned_be16(port_group_a, arr + n); |
1613 | n += 2; | |
5a09e398 HR |
1614 | arr[n++] = 0; /* Reserved */ |
1615 | arr[n++] = 0; /* Status code */ | |
1616 | arr[n++] = 0; /* Vendor unique */ | |
1617 | arr[n++] = 0x1; /* One port per group */ | |
1618 | arr[n++] = 0; /* Reserved */ | |
1619 | arr[n++] = 0; /* Reserved */ | |
773642d9 DG |
1620 | put_unaligned_be16(port_a, arr + n); |
1621 | n += 2; | |
5a09e398 HR |
1622 | arr[n++] = 3; /* Port unavailable */ |
1623 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ | |
773642d9 DG |
1624 | put_unaligned_be16(port_group_b, arr + n); |
1625 | n += 2; | |
5a09e398 HR |
1626 | arr[n++] = 0; /* Reserved */ |
1627 | arr[n++] = 0; /* Status code */ | |
1628 | arr[n++] = 0; /* Vendor unique */ | |
1629 | arr[n++] = 0x1; /* One port per group */ | |
1630 | arr[n++] = 0; /* Reserved */ | |
1631 | arr[n++] = 0; /* Reserved */ | |
773642d9 DG |
1632 | put_unaligned_be16(port_b, arr + n); |
1633 | n += 2; | |
5a09e398 HR |
1634 | |
1635 | rlen = n - 4; | |
773642d9 | 1636 | put_unaligned_be32(rlen, arr + 0); |
5a09e398 HR |
1637 | |
1638 | /* | |
1639 | * Return the smallest value of either | |
1640 | * - The allocated length | |
1641 | * - The constructed command length | |
1642 | * - The maximum array size | |
1643 | */ | |
1644 | rlen = min(alen,n); | |
1645 | ret = fill_from_dev_buffer(scp, arr, | |
1646 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); | |
1647 | kfree(arr); | |
1648 | return ret; | |
1649 | } | |
1650 | ||
fd32119b DG |
1651 | static int resp_rsup_opcodes(struct scsi_cmnd *scp, |
1652 | struct sdebug_dev_info *devip) | |
38d5c833 DG |
1653 | { |
1654 | bool rctd; | |
1655 | u8 reporting_opts, req_opcode, sdeb_i, supp; | |
1656 | u16 req_sa, u; | |
1657 | u32 alloc_len, a_len; | |
1658 | int k, offset, len, errsts, count, bump, na; | |
1659 | const struct opcode_info_t *oip; | |
1660 | const struct opcode_info_t *r_oip; | |
1661 | u8 *arr; | |
1662 | u8 *cmd = scp->cmnd; | |
1663 | ||
1664 | rctd = !!(cmd[2] & 0x80); | |
1665 | reporting_opts = cmd[2] & 0x7; | |
1666 | req_opcode = cmd[3]; | |
1667 | req_sa = get_unaligned_be16(cmd + 4); | |
1668 | alloc_len = get_unaligned_be32(cmd + 6); | |
6d310dfb | 1669 | if (alloc_len < 4 || alloc_len > 0xffff) { |
38d5c833 DG |
1670 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); |
1671 | return check_condition_result; | |
1672 | } | |
1673 | if (alloc_len > 8192) | |
1674 | a_len = 8192; | |
1675 | else | |
1676 | a_len = alloc_len; | |
99531e60 | 1677 | arr = kzalloc((a_len < 256) ? 320 : a_len + 64, GFP_ATOMIC); |
38d5c833 DG |
1678 | if (NULL == arr) { |
1679 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
1680 | INSUFF_RES_ASCQ); | |
1681 | return check_condition_result; | |
1682 | } | |
1683 | switch (reporting_opts) { | |
1684 | case 0: /* all commands */ | |
1685 | /* count number of commands */ | |
1686 | for (count = 0, oip = opcode_info_arr; | |
1687 | oip->num_attached != 0xff; ++oip) { | |
1688 | if (F_INV_OP & oip->flags) | |
1689 | continue; | |
1690 | count += (oip->num_attached + 1); | |
1691 | } | |
1692 | bump = rctd ? 20 : 8; | |
1693 | put_unaligned_be32(count * bump, arr); | |
1694 | for (offset = 4, oip = opcode_info_arr; | |
1695 | oip->num_attached != 0xff && offset < a_len; ++oip) { | |
1696 | if (F_INV_OP & oip->flags) | |
1697 | continue; | |
1698 | na = oip->num_attached; | |
1699 | arr[offset] = oip->opcode; | |
1700 | put_unaligned_be16(oip->sa, arr + offset + 2); | |
1701 | if (rctd) | |
1702 | arr[offset + 5] |= 0x2; | |
1703 | if (FF_SA & oip->flags) | |
1704 | arr[offset + 5] |= 0x1; | |
1705 | put_unaligned_be16(oip->len_mask[0], arr + offset + 6); | |
1706 | if (rctd) | |
1707 | put_unaligned_be16(0xa, arr + offset + 8); | |
1708 | r_oip = oip; | |
1709 | for (k = 0, oip = oip->arrp; k < na; ++k, ++oip) { | |
1710 | if (F_INV_OP & oip->flags) | |
1711 | continue; | |
1712 | offset += bump; | |
1713 | arr[offset] = oip->opcode; | |
1714 | put_unaligned_be16(oip->sa, arr + offset + 2); | |
1715 | if (rctd) | |
1716 | arr[offset + 5] |= 0x2; | |
1717 | if (FF_SA & oip->flags) | |
1718 | arr[offset + 5] |= 0x1; | |
1719 | put_unaligned_be16(oip->len_mask[0], | |
1720 | arr + offset + 6); | |
1721 | if (rctd) | |
1722 | put_unaligned_be16(0xa, | |
1723 | arr + offset + 8); | |
1724 | } | |
1725 | oip = r_oip; | |
1726 | offset += bump; | |
1727 | } | |
1728 | break; | |
1729 | case 1: /* one command: opcode only */ | |
1730 | case 2: /* one command: opcode plus service action */ | |
1731 | case 3: /* one command: if sa==0 then opcode only else opcode+sa */ | |
1732 | sdeb_i = opcode_ind_arr[req_opcode]; | |
1733 | oip = &opcode_info_arr[sdeb_i]; | |
1734 | if (F_INV_OP & oip->flags) { | |
1735 | supp = 1; | |
1736 | offset = 4; | |
1737 | } else { | |
1738 | if (1 == reporting_opts) { | |
1739 | if (FF_SA & oip->flags) { | |
1740 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, | |
1741 | 2, 2); | |
1742 | kfree(arr); | |
1743 | return check_condition_result; | |
1744 | } | |
1745 | req_sa = 0; | |
1746 | } else if (2 == reporting_opts && | |
1747 | 0 == (FF_SA & oip->flags)) { | |
1748 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, -1); | |
1749 | kfree(arr); /* point at requested sa */ | |
1750 | return check_condition_result; | |
1751 | } | |
1752 | if (0 == (FF_SA & oip->flags) && | |
1753 | req_opcode == oip->opcode) | |
1754 | supp = 3; | |
1755 | else if (0 == (FF_SA & oip->flags)) { | |
1756 | na = oip->num_attached; | |
1757 | for (k = 0, oip = oip->arrp; k < na; | |
1758 | ++k, ++oip) { | |
1759 | if (req_opcode == oip->opcode) | |
1760 | break; | |
1761 | } | |
1762 | supp = (k >= na) ? 1 : 3; | |
1763 | } else if (req_sa != oip->sa) { | |
1764 | na = oip->num_attached; | |
1765 | for (k = 0, oip = oip->arrp; k < na; | |
1766 | ++k, ++oip) { | |
1767 | if (req_sa == oip->sa) | |
1768 | break; | |
1769 | } | |
1770 | supp = (k >= na) ? 1 : 3; | |
1771 | } else | |
1772 | supp = 3; | |
1773 | if (3 == supp) { | |
1774 | u = oip->len_mask[0]; | |
1775 | put_unaligned_be16(u, arr + 2); | |
1776 | arr[4] = oip->opcode; | |
1777 | for (k = 1; k < u; ++k) | |
1778 | arr[4 + k] = (k < 16) ? | |
1779 | oip->len_mask[k] : 0xff; | |
1780 | offset = 4 + u; | |
1781 | } else | |
1782 | offset = 4; | |
1783 | } | |
1784 | arr[1] = (rctd ? 0x80 : 0) | supp; | |
1785 | if (rctd) { | |
1786 | put_unaligned_be16(0xa, arr + offset); | |
1787 | offset += 12; | |
1788 | } | |
1789 | break; | |
1790 | default: | |
1791 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 2); | |
1792 | kfree(arr); | |
1793 | return check_condition_result; | |
1794 | } | |
1795 | offset = (offset < a_len) ? offset : a_len; | |
1796 | len = (offset < alloc_len) ? offset : alloc_len; | |
1797 | errsts = fill_from_dev_buffer(scp, arr, len); | |
1798 | kfree(arr); | |
1799 | return errsts; | |
1800 | } | |
1801 | ||
fd32119b DG |
1802 | static int resp_rsup_tmfs(struct scsi_cmnd *scp, |
1803 | struct sdebug_dev_info *devip) | |
38d5c833 DG |
1804 | { |
1805 | bool repd; | |
1806 | u32 alloc_len, len; | |
1807 | u8 arr[16]; | |
1808 | u8 *cmd = scp->cmnd; | |
1809 | ||
1810 | memset(arr, 0, sizeof(arr)); | |
1811 | repd = !!(cmd[2] & 0x80); | |
1812 | alloc_len = get_unaligned_be32(cmd + 6); | |
1813 | if (alloc_len < 4) { | |
1814 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); | |
1815 | return check_condition_result; | |
1816 | } | |
1817 | arr[0] = 0xc8; /* ATS | ATSS | LURS */ | |
1818 | arr[1] = 0x1; /* ITNRS */ | |
1819 | if (repd) { | |
1820 | arr[3] = 0xc; | |
1821 | len = 16; | |
1822 | } else | |
1823 | len = 4; | |
1824 | ||
1825 | len = (len < alloc_len) ? len : alloc_len; | |
1826 | return fill_from_dev_buffer(scp, arr, len); | |
1827 | } | |
1828 | ||
1da177e4 LT |
1829 | /* <<Following mode page info copied from ST318451LW>> */ |
1830 | ||
1831 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) | |
1832 | { /* Read-Write Error Recovery page for mode_sense */ | |
1833 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, | |
1834 | 5, 0, 0xff, 0xff}; | |
1835 | ||
1836 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); | |
1837 | if (1 == pcontrol) | |
1838 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); | |
1839 | return sizeof(err_recov_pg); | |
1840 | } | |
1841 | ||
1842 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) | |
1843 | { /* Disconnect-Reconnect page for mode_sense */ | |
1844 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, | |
1845 | 0, 0, 0, 0, 0, 0, 0, 0}; | |
1846 | ||
1847 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); | |
1848 | if (1 == pcontrol) | |
1849 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); | |
1850 | return sizeof(disconnect_pg); | |
1851 | } | |
1852 | ||
1853 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) | |
1854 | { /* Format device page for mode_sense */ | |
597136ab MP |
1855 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
1856 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1857 | 0, 0, 0, 0, 0x40, 0, 0, 0}; | |
1858 | ||
1859 | memcpy(p, format_pg, sizeof(format_pg)); | |
773642d9 DG |
1860 | put_unaligned_be16(sdebug_sectors_per, p + 10); |
1861 | put_unaligned_be16(sdebug_sector_size, p + 12); | |
1862 | if (sdebug_removable) | |
597136ab MP |
1863 | p[20] |= 0x20; /* should agree with INQUIRY */ |
1864 | if (1 == pcontrol) | |
1865 | memset(p + 2, 0, sizeof(format_pg) - 2); | |
1866 | return sizeof(format_pg); | |
1da177e4 LT |
1867 | } |
1868 | ||
fd32119b DG |
1869 | static unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, |
1870 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, | |
1871 | 0, 0, 0, 0}; | |
1872 | ||
1da177e4 LT |
1873 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) |
1874 | { /* Caching page for mode_sense */ | |
cbf67842 DG |
1875 | unsigned char ch_caching_pg[] = {/* 0x8, 18, */ 0x4, 0, 0, 0, 0, 0, |
1876 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; | |
1877 | unsigned char d_caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
1da177e4 LT |
1878 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; |
1879 | ||
773642d9 | 1880 | if (SDEBUG_OPT_N_WCE & sdebug_opts) |
cbf67842 | 1881 | caching_pg[2] &= ~0x4; /* set WCE=0 (default WCE=1) */ |
1da177e4 LT |
1882 | memcpy(p, caching_pg, sizeof(caching_pg)); |
1883 | if (1 == pcontrol) | |
cbf67842 DG |
1884 | memcpy(p + 2, ch_caching_pg, sizeof(ch_caching_pg)); |
1885 | else if (2 == pcontrol) | |
1886 | memcpy(p, d_caching_pg, sizeof(d_caching_pg)); | |
1da177e4 LT |
1887 | return sizeof(caching_pg); |
1888 | } | |
1889 | ||
fd32119b DG |
1890 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
1891 | 0, 0, 0x2, 0x4b}; | |
1892 | ||
1da177e4 LT |
1893 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) |
1894 | { /* Control mode page for mode_sense */ | |
c65b1445 DG |
1895 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
1896 | 0, 0, 0, 0}; | |
1897 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, | |
1da177e4 LT |
1898 | 0, 0, 0x2, 0x4b}; |
1899 | ||
773642d9 | 1900 | if (sdebug_dsense) |
1da177e4 | 1901 | ctrl_m_pg[2] |= 0x4; |
c65b1445 DG |
1902 | else |
1903 | ctrl_m_pg[2] &= ~0x4; | |
c6a44287 | 1904 | |
773642d9 | 1905 | if (sdebug_ato) |
c6a44287 MP |
1906 | ctrl_m_pg[5] |= 0x80; /* ATO=1 */ |
1907 | ||
1da177e4 LT |
1908 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
1909 | if (1 == pcontrol) | |
c65b1445 DG |
1910 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
1911 | else if (2 == pcontrol) | |
1912 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); | |
1da177e4 LT |
1913 | return sizeof(ctrl_m_pg); |
1914 | } | |
1915 | ||
c65b1445 | 1916 | |
1da177e4 LT |
1917 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
1918 | { /* Informational Exceptions control mode page for mode_sense */ | |
c65b1445 DG |
1919 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
1920 | 0, 0, 0x0, 0x0}; | |
1921 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
1922 | 0, 0, 0x0, 0x0}; | |
1923 | ||
1da177e4 LT |
1924 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
1925 | if (1 == pcontrol) | |
c65b1445 DG |
1926 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
1927 | else if (2 == pcontrol) | |
1928 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); | |
1da177e4 LT |
1929 | return sizeof(iec_m_pg); |
1930 | } | |
1931 | ||
c65b1445 DG |
1932 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
1933 | { /* SAS SSP mode page - short format for mode_sense */ | |
1934 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, | |
1935 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; | |
1936 | ||
1937 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); | |
1938 | if (1 == pcontrol) | |
1939 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); | |
1940 | return sizeof(sas_sf_m_pg); | |
1941 | } | |
1942 | ||
1943 | ||
1944 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, | |
1945 | int target_dev_id) | |
1946 | { /* SAS phy control and discover mode page for mode_sense */ | |
1947 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, | |
1948 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
773642d9 DG |
1949 | 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ |
1950 | 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ | |
c65b1445 DG |
1951 | 0x2, 0, 0, 0, 0, 0, 0, 0, |
1952 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1953 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1954 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
773642d9 DG |
1955 | 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ |
1956 | 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ | |
c65b1445 DG |
1957 | 0x3, 0, 0, 0, 0, 0, 0, 0, |
1958 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1959 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1960 | }; | |
1961 | int port_a, port_b; | |
1962 | ||
1b37bd60 DG |
1963 | put_unaligned_be64(naa3_comp_a, sas_pcd_m_pg + 16); |
1964 | put_unaligned_be64(naa3_comp_c + 1, sas_pcd_m_pg + 24); | |
1965 | put_unaligned_be64(naa3_comp_a, sas_pcd_m_pg + 64); | |
1966 | put_unaligned_be64(naa3_comp_c + 1, sas_pcd_m_pg + 72); | |
c65b1445 DG |
1967 | port_a = target_dev_id + 1; |
1968 | port_b = port_a + 1; | |
1969 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); | |
773642d9 DG |
1970 | put_unaligned_be32(port_a, p + 20); |
1971 | put_unaligned_be32(port_b, p + 48 + 20); | |
c65b1445 DG |
1972 | if (1 == pcontrol) |
1973 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); | |
1974 | return sizeof(sas_pcd_m_pg); | |
1975 | } | |
1976 | ||
1977 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) | |
1978 | { /* SAS SSP shared protocol specific port mode subpage */ | |
1979 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, | |
1980 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1981 | }; | |
1982 | ||
1983 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); | |
1984 | if (1 == pcontrol) | |
1985 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); | |
1986 | return sizeof(sas_sha_m_pg); | |
1987 | } | |
1988 | ||
1da177e4 LT |
1989 | #define SDEBUG_MAX_MSENSE_SZ 256 |
1990 | ||
fd32119b DG |
1991 | static int resp_mode_sense(struct scsi_cmnd *scp, |
1992 | struct sdebug_dev_info *devip) | |
1da177e4 | 1993 | { |
23183910 | 1994 | int pcontrol, pcode, subpcode, bd_len; |
1da177e4 | 1995 | unsigned char dev_spec; |
760f3b03 | 1996 | int alloc_len, offset, len, target_dev_id; |
c2248fc9 | 1997 | int target = scp->device->id; |
1da177e4 LT |
1998 | unsigned char * ap; |
1999 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; | |
01123ef4 | 2000 | unsigned char *cmd = scp->cmnd; |
760f3b03 | 2001 | bool dbd, llbaa, msense_6, is_disk, bad_pcode; |
1da177e4 | 2002 | |
760f3b03 | 2003 | dbd = !!(cmd[1] & 0x8); /* disable block descriptors */ |
1da177e4 LT |
2004 | pcontrol = (cmd[2] & 0xc0) >> 6; |
2005 | pcode = cmd[2] & 0x3f; | |
2006 | subpcode = cmd[3]; | |
2007 | msense_6 = (MODE_SENSE == cmd[0]); | |
760f3b03 DG |
2008 | llbaa = msense_6 ? false : !!(cmd[1] & 0x10); |
2009 | is_disk = (sdebug_ptype == TYPE_DISK); | |
2010 | if (is_disk && !dbd) | |
23183910 DG |
2011 | bd_len = llbaa ? 16 : 8; |
2012 | else | |
2013 | bd_len = 0; | |
773642d9 | 2014 | alloc_len = msense_6 ? cmd[4] : get_unaligned_be16(cmd + 7); |
1da177e4 LT |
2015 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); |
2016 | if (0x3 == pcontrol) { /* Saving values not supported */ | |
cbf67842 | 2017 | mk_sense_buffer(scp, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, 0); |
1da177e4 LT |
2018 | return check_condition_result; |
2019 | } | |
c65b1445 DG |
2020 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
2021 | (devip->target * 1000) - 3; | |
b01f6f83 | 2022 | /* for disks set DPOFUA bit and clear write protect (WP) bit */ |
760f3b03 | 2023 | if (is_disk) |
b01f6f83 | 2024 | dev_spec = 0x10; /* =0x90 if WP=1 implies read-only */ |
23183910 DG |
2025 | else |
2026 | dev_spec = 0x0; | |
1da177e4 LT |
2027 | if (msense_6) { |
2028 | arr[2] = dev_spec; | |
23183910 | 2029 | arr[3] = bd_len; |
1da177e4 LT |
2030 | offset = 4; |
2031 | } else { | |
2032 | arr[3] = dev_spec; | |
23183910 DG |
2033 | if (16 == bd_len) |
2034 | arr[4] = 0x1; /* set LONGLBA bit */ | |
2035 | arr[7] = bd_len; /* assume 255 or less */ | |
1da177e4 LT |
2036 | offset = 8; |
2037 | } | |
2038 | ap = arr + offset; | |
28898873 FT |
2039 | if ((bd_len > 0) && (!sdebug_capacity)) |
2040 | sdebug_capacity = get_sdebug_capacity(); | |
2041 | ||
23183910 | 2042 | if (8 == bd_len) { |
773642d9 DG |
2043 | if (sdebug_capacity > 0xfffffffe) |
2044 | put_unaligned_be32(0xffffffff, ap + 0); | |
2045 | else | |
2046 | put_unaligned_be32(sdebug_capacity, ap + 0); | |
2047 | put_unaligned_be16(sdebug_sector_size, ap + 6); | |
23183910 DG |
2048 | offset += bd_len; |
2049 | ap = arr + offset; | |
2050 | } else if (16 == bd_len) { | |
773642d9 DG |
2051 | put_unaligned_be64((u64)sdebug_capacity, ap + 0); |
2052 | put_unaligned_be32(sdebug_sector_size, ap + 12); | |
23183910 DG |
2053 | offset += bd_len; |
2054 | ap = arr + offset; | |
2055 | } | |
1da177e4 | 2056 | |
c65b1445 DG |
2057 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
2058 | /* TODO: Control Extension page */ | |
22017ed2 | 2059 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
1da177e4 LT |
2060 | return check_condition_result; |
2061 | } | |
760f3b03 DG |
2062 | bad_pcode = false; |
2063 | ||
1da177e4 LT |
2064 | switch (pcode) { |
2065 | case 0x1: /* Read-Write error recovery page, direct access */ | |
2066 | len = resp_err_recov_pg(ap, pcontrol, target); | |
2067 | offset += len; | |
2068 | break; | |
2069 | case 0x2: /* Disconnect-Reconnect page, all devices */ | |
2070 | len = resp_disconnect_pg(ap, pcontrol, target); | |
2071 | offset += len; | |
2072 | break; | |
2073 | case 0x3: /* Format device page, direct access */ | |
760f3b03 DG |
2074 | if (is_disk) { |
2075 | len = resp_format_pg(ap, pcontrol, target); | |
2076 | offset += len; | |
2077 | } else | |
2078 | bad_pcode = true; | |
1da177e4 LT |
2079 | break; |
2080 | case 0x8: /* Caching page, direct access */ | |
760f3b03 DG |
2081 | if (is_disk) { |
2082 | len = resp_caching_pg(ap, pcontrol, target); | |
2083 | offset += len; | |
2084 | } else | |
2085 | bad_pcode = true; | |
1da177e4 LT |
2086 | break; |
2087 | case 0xa: /* Control Mode page, all devices */ | |
2088 | len = resp_ctrl_m_pg(ap, pcontrol, target); | |
2089 | offset += len; | |
2090 | break; | |
c65b1445 DG |
2091 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
2092 | if ((subpcode > 0x2) && (subpcode < 0xff)) { | |
22017ed2 | 2093 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
c65b1445 DG |
2094 | return check_condition_result; |
2095 | } | |
2096 | len = 0; | |
2097 | if ((0x0 == subpcode) || (0xff == subpcode)) | |
2098 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
2099 | if ((0x1 == subpcode) || (0xff == subpcode)) | |
2100 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, | |
2101 | target_dev_id); | |
2102 | if ((0x2 == subpcode) || (0xff == subpcode)) | |
2103 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
2104 | offset += len; | |
2105 | break; | |
1da177e4 LT |
2106 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
2107 | len = resp_iec_m_pg(ap, pcontrol, target); | |
2108 | offset += len; | |
2109 | break; | |
2110 | case 0x3f: /* Read all Mode pages */ | |
c65b1445 DG |
2111 | if ((0 == subpcode) || (0xff == subpcode)) { |
2112 | len = resp_err_recov_pg(ap, pcontrol, target); | |
2113 | len += resp_disconnect_pg(ap + len, pcontrol, target); | |
760f3b03 DG |
2114 | if (is_disk) { |
2115 | len += resp_format_pg(ap + len, pcontrol, | |
2116 | target); | |
2117 | len += resp_caching_pg(ap + len, pcontrol, | |
2118 | target); | |
2119 | } | |
c65b1445 DG |
2120 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); |
2121 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
2122 | if (0xff == subpcode) { | |
2123 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, | |
2124 | target, target_dev_id); | |
2125 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
2126 | } | |
2127 | len += resp_iec_m_pg(ap + len, pcontrol, target); | |
760f3b03 | 2128 | offset += len; |
c65b1445 | 2129 | } else { |
22017ed2 | 2130 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
c65b1445 DG |
2131 | return check_condition_result; |
2132 | } | |
1da177e4 LT |
2133 | break; |
2134 | default: | |
760f3b03 DG |
2135 | bad_pcode = true; |
2136 | break; | |
2137 | } | |
2138 | if (bad_pcode) { | |
22017ed2 | 2139 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
1da177e4 LT |
2140 | return check_condition_result; |
2141 | } | |
2142 | if (msense_6) | |
2143 | arr[0] = offset - 1; | |
773642d9 DG |
2144 | else |
2145 | put_unaligned_be16((offset - 2), arr + 0); | |
1da177e4 LT |
2146 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); |
2147 | } | |
2148 | ||
c65b1445 DG |
2149 | #define SDEBUG_MAX_MSELECT_SZ 512 |
2150 | ||
fd32119b DG |
2151 | static int resp_mode_select(struct scsi_cmnd *scp, |
2152 | struct sdebug_dev_info *devip) | |
c65b1445 DG |
2153 | { |
2154 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; | |
c2248fc9 | 2155 | int param_len, res, mpage; |
c65b1445 | 2156 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; |
01123ef4 | 2157 | unsigned char *cmd = scp->cmnd; |
c2248fc9 | 2158 | int mselect6 = (MODE_SELECT == cmd[0]); |
c65b1445 | 2159 | |
c65b1445 DG |
2160 | memset(arr, 0, sizeof(arr)); |
2161 | pf = cmd[1] & 0x10; | |
2162 | sp = cmd[1] & 0x1; | |
773642d9 | 2163 | param_len = mselect6 ? cmd[4] : get_unaligned_be16(cmd + 7); |
c65b1445 | 2164 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { |
22017ed2 | 2165 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, mselect6 ? 4 : 7, -1); |
c65b1445 DG |
2166 | return check_condition_result; |
2167 | } | |
2168 | res = fetch_to_dev_buffer(scp, arr, param_len); | |
2169 | if (-1 == res) | |
773642d9 DG |
2170 | return DID_ERROR << 16; |
2171 | else if (sdebug_verbose && (res < param_len)) | |
cbf67842 DG |
2172 | sdev_printk(KERN_INFO, scp->device, |
2173 | "%s: cdb indicated=%d, IO sent=%d bytes\n", | |
2174 | __func__, param_len, res); | |
773642d9 DG |
2175 | md_len = mselect6 ? (arr[0] + 1) : (get_unaligned_be16(arr + 0) + 2); |
2176 | bd_len = mselect6 ? arr[3] : get_unaligned_be16(arr + 6); | |
23183910 | 2177 | if (md_len > 2) { |
22017ed2 | 2178 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, 0, -1); |
c65b1445 DG |
2179 | return check_condition_result; |
2180 | } | |
2181 | off = bd_len + (mselect6 ? 4 : 8); | |
2182 | mpage = arr[off] & 0x3f; | |
2183 | ps = !!(arr[off] & 0x80); | |
2184 | if (ps) { | |
22017ed2 | 2185 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 7); |
c65b1445 DG |
2186 | return check_condition_result; |
2187 | } | |
2188 | spf = !!(arr[off] & 0x40); | |
773642d9 | 2189 | pg_len = spf ? (get_unaligned_be16(arr + off + 2) + 4) : |
c65b1445 DG |
2190 | (arr[off + 1] + 2); |
2191 | if ((pg_len + off) > param_len) { | |
cbf67842 | 2192 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
c65b1445 DG |
2193 | PARAMETER_LIST_LENGTH_ERR, 0); |
2194 | return check_condition_result; | |
2195 | } | |
2196 | switch (mpage) { | |
cbf67842 DG |
2197 | case 0x8: /* Caching Mode page */ |
2198 | if (caching_pg[1] == arr[off + 1]) { | |
2199 | memcpy(caching_pg + 2, arr + off + 2, | |
2200 | sizeof(caching_pg) - 2); | |
2201 | goto set_mode_changed_ua; | |
2202 | } | |
2203 | break; | |
c65b1445 DG |
2204 | case 0xa: /* Control Mode page */ |
2205 | if (ctrl_m_pg[1] == arr[off + 1]) { | |
2206 | memcpy(ctrl_m_pg + 2, arr + off + 2, | |
2207 | sizeof(ctrl_m_pg) - 2); | |
773642d9 | 2208 | sdebug_dsense = !!(ctrl_m_pg[2] & 0x4); |
cbf67842 | 2209 | goto set_mode_changed_ua; |
c65b1445 DG |
2210 | } |
2211 | break; | |
2212 | case 0x1c: /* Informational Exceptions Mode page */ | |
2213 | if (iec_m_pg[1] == arr[off + 1]) { | |
2214 | memcpy(iec_m_pg + 2, arr + off + 2, | |
2215 | sizeof(iec_m_pg) - 2); | |
cbf67842 | 2216 | goto set_mode_changed_ua; |
c65b1445 DG |
2217 | } |
2218 | break; | |
2219 | default: | |
2220 | break; | |
2221 | } | |
22017ed2 | 2222 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 5); |
c65b1445 | 2223 | return check_condition_result; |
cbf67842 DG |
2224 | set_mode_changed_ua: |
2225 | set_bit(SDEBUG_UA_MODE_CHANGED, devip->uas_bm); | |
2226 | return 0; | |
c65b1445 DG |
2227 | } |
2228 | ||
2229 | static int resp_temp_l_pg(unsigned char * arr) | |
2230 | { | |
2231 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, | |
2232 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, | |
2233 | }; | |
2234 | ||
2235 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); | |
2236 | return sizeof(temp_l_pg); | |
2237 | } | |
2238 | ||
2239 | static int resp_ie_l_pg(unsigned char * arr) | |
2240 | { | |
2241 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, | |
2242 | }; | |
2243 | ||
2244 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); | |
2245 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ | |
2246 | arr[4] = THRESHOLD_EXCEEDED; | |
2247 | arr[5] = 0xff; | |
2248 | } | |
2249 | return sizeof(ie_l_pg); | |
2250 | } | |
2251 | ||
2252 | #define SDEBUG_MAX_LSENSE_SZ 512 | |
2253 | ||
2254 | static int resp_log_sense(struct scsi_cmnd * scp, | |
2255 | struct sdebug_dev_info * devip) | |
2256 | { | |
c2248fc9 | 2257 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, len, n; |
c65b1445 | 2258 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
01123ef4 | 2259 | unsigned char *cmd = scp->cmnd; |
c65b1445 | 2260 | |
c65b1445 DG |
2261 | memset(arr, 0, sizeof(arr)); |
2262 | ppc = cmd[1] & 0x2; | |
2263 | sp = cmd[1] & 0x1; | |
2264 | if (ppc || sp) { | |
22017ed2 | 2265 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, ppc ? 1 : 0); |
c65b1445 DG |
2266 | return check_condition_result; |
2267 | } | |
2268 | pcontrol = (cmd[2] & 0xc0) >> 6; | |
2269 | pcode = cmd[2] & 0x3f; | |
23183910 | 2270 | subpcode = cmd[3] & 0xff; |
773642d9 | 2271 | alloc_len = get_unaligned_be16(cmd + 7); |
c65b1445 | 2272 | arr[0] = pcode; |
23183910 DG |
2273 | if (0 == subpcode) { |
2274 | switch (pcode) { | |
2275 | case 0x0: /* Supported log pages log page */ | |
2276 | n = 4; | |
2277 | arr[n++] = 0x0; /* this page */ | |
2278 | arr[n++] = 0xd; /* Temperature */ | |
2279 | arr[n++] = 0x2f; /* Informational exceptions */ | |
2280 | arr[3] = n - 4; | |
2281 | break; | |
2282 | case 0xd: /* Temperature log page */ | |
2283 | arr[3] = resp_temp_l_pg(arr + 4); | |
2284 | break; | |
2285 | case 0x2f: /* Informational exceptions log page */ | |
2286 | arr[3] = resp_ie_l_pg(arr + 4); | |
2287 | break; | |
2288 | default: | |
22017ed2 | 2289 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
23183910 DG |
2290 | return check_condition_result; |
2291 | } | |
2292 | } else if (0xff == subpcode) { | |
2293 | arr[0] |= 0x40; | |
2294 | arr[1] = subpcode; | |
2295 | switch (pcode) { | |
2296 | case 0x0: /* Supported log pages and subpages log page */ | |
2297 | n = 4; | |
2298 | arr[n++] = 0x0; | |
2299 | arr[n++] = 0x0; /* 0,0 page */ | |
2300 | arr[n++] = 0x0; | |
2301 | arr[n++] = 0xff; /* this page */ | |
2302 | arr[n++] = 0xd; | |
2303 | arr[n++] = 0x0; /* Temperature */ | |
2304 | arr[n++] = 0x2f; | |
2305 | arr[n++] = 0x0; /* Informational exceptions */ | |
2306 | arr[3] = n - 4; | |
2307 | break; | |
2308 | case 0xd: /* Temperature subpages */ | |
2309 | n = 4; | |
2310 | arr[n++] = 0xd; | |
2311 | arr[n++] = 0x0; /* Temperature */ | |
2312 | arr[3] = n - 4; | |
2313 | break; | |
2314 | case 0x2f: /* Informational exceptions subpages */ | |
2315 | n = 4; | |
2316 | arr[n++] = 0x2f; | |
2317 | arr[n++] = 0x0; /* Informational exceptions */ | |
2318 | arr[3] = n - 4; | |
2319 | break; | |
2320 | default: | |
22017ed2 | 2321 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
23183910 DG |
2322 | return check_condition_result; |
2323 | } | |
2324 | } else { | |
22017ed2 | 2325 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
c65b1445 DG |
2326 | return check_condition_result; |
2327 | } | |
773642d9 | 2328 | len = min(get_unaligned_be16(arr + 2) + 4, alloc_len); |
c65b1445 DG |
2329 | return fill_from_dev_buffer(scp, arr, |
2330 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); | |
2331 | } | |
2332 | ||
cbf67842 | 2333 | static int check_device_access_params(struct scsi_cmnd *scp, |
19789100 | 2334 | unsigned long long lba, unsigned int num) |
1da177e4 | 2335 | { |
c65b1445 | 2336 | if (lba + num > sdebug_capacity) { |
22017ed2 | 2337 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
1da177e4 LT |
2338 | return check_condition_result; |
2339 | } | |
c65b1445 DG |
2340 | /* transfer length excessive (tie in to block limits VPD page) */ |
2341 | if (num > sdebug_store_sectors) { | |
22017ed2 | 2342 | /* needs work to find which cdb byte 'num' comes from */ |
cbf67842 | 2343 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
c65b1445 DG |
2344 | return check_condition_result; |
2345 | } | |
19789100 FT |
2346 | return 0; |
2347 | } | |
2348 | ||
a4517511 | 2349 | /* Returns number of bytes copied or -1 if error. */ |
fd32119b DG |
2350 | static int do_device_access(struct scsi_cmnd *scmd, u64 lba, u32 num, |
2351 | bool do_write) | |
19789100 FT |
2352 | { |
2353 | int ret; | |
c2248fc9 | 2354 | u64 block, rest = 0; |
a4517511 AM |
2355 | struct scsi_data_buffer *sdb; |
2356 | enum dma_data_direction dir; | |
a4517511 | 2357 | |
c2248fc9 | 2358 | if (do_write) { |
a4517511 AM |
2359 | sdb = scsi_out(scmd); |
2360 | dir = DMA_TO_DEVICE; | |
a4517511 AM |
2361 | } else { |
2362 | sdb = scsi_in(scmd); | |
2363 | dir = DMA_FROM_DEVICE; | |
a4517511 | 2364 | } |
19789100 | 2365 | |
a4517511 AM |
2366 | if (!sdb->length) |
2367 | return 0; | |
2368 | if (!(scsi_bidi_cmnd(scmd) || scmd->sc_data_direction == dir)) | |
2369 | return -1; | |
19789100 FT |
2370 | |
2371 | block = do_div(lba, sdebug_store_sectors); | |
2372 | if (block + num > sdebug_store_sectors) | |
2373 | rest = block + num - sdebug_store_sectors; | |
2374 | ||
386ecb12 | 2375 | ret = sg_copy_buffer(sdb->table.sgl, sdb->table.nents, |
773642d9 DG |
2376 | fake_storep + (block * sdebug_sector_size), |
2377 | (num - rest) * sdebug_sector_size, 0, do_write); | |
2378 | if (ret != (num - rest) * sdebug_sector_size) | |
a4517511 AM |
2379 | return ret; |
2380 | ||
2381 | if (rest) { | |
386ecb12 | 2382 | ret += sg_copy_buffer(sdb->table.sgl, sdb->table.nents, |
773642d9 DG |
2383 | fake_storep, rest * sdebug_sector_size, |
2384 | (num - rest) * sdebug_sector_size, do_write); | |
a4517511 | 2385 | } |
19789100 FT |
2386 | |
2387 | return ret; | |
2388 | } | |
2389 | ||
38d5c833 DG |
2390 | /* If fake_store(lba,num) compares equal to arr(num), then copy top half of |
2391 | * arr into fake_store(lba,num) and return true. If comparison fails then | |
2392 | * return false. */ | |
fd32119b | 2393 | static bool comp_write_worker(u64 lba, u32 num, const u8 *arr) |
38d5c833 DG |
2394 | { |
2395 | bool res; | |
2396 | u64 block, rest = 0; | |
2397 | u32 store_blks = sdebug_store_sectors; | |
773642d9 | 2398 | u32 lb_size = sdebug_sector_size; |
38d5c833 DG |
2399 | |
2400 | block = do_div(lba, store_blks); | |
2401 | if (block + num > store_blks) | |
2402 | rest = block + num - store_blks; | |
2403 | ||
2404 | res = !memcmp(fake_storep + (block * lb_size), arr, | |
2405 | (num - rest) * lb_size); | |
2406 | if (!res) | |
2407 | return res; | |
2408 | if (rest) | |
2409 | res = memcmp(fake_storep, arr + ((num - rest) * lb_size), | |
2410 | rest * lb_size); | |
2411 | if (!res) | |
2412 | return res; | |
2413 | arr += num * lb_size; | |
2414 | memcpy(fake_storep + (block * lb_size), arr, (num - rest) * lb_size); | |
2415 | if (rest) | |
2416 | memcpy(fake_storep, arr + ((num - rest) * lb_size), | |
2417 | rest * lb_size); | |
2418 | return res; | |
2419 | } | |
2420 | ||
51d648af | 2421 | static __be16 dif_compute_csum(const void *buf, int len) |
beb40ea4 | 2422 | { |
51d648af | 2423 | __be16 csum; |
beb40ea4 | 2424 | |
773642d9 | 2425 | if (sdebug_guard) |
51d648af AM |
2426 | csum = (__force __be16)ip_compute_csum(buf, len); |
2427 | else | |
beb40ea4 | 2428 | csum = cpu_to_be16(crc_t10dif(buf, len)); |
51d648af | 2429 | |
beb40ea4 AM |
2430 | return csum; |
2431 | } | |
2432 | ||
2433 | static int dif_verify(struct sd_dif_tuple *sdt, const void *data, | |
2434 | sector_t sector, u32 ei_lba) | |
2435 | { | |
773642d9 | 2436 | __be16 csum = dif_compute_csum(data, sdebug_sector_size); |
beb40ea4 AM |
2437 | |
2438 | if (sdt->guard_tag != csum) { | |
c1287970 | 2439 | pr_err("GUARD check failed on sector %lu rcvd 0x%04x, data 0x%04x\n", |
beb40ea4 AM |
2440 | (unsigned long)sector, |
2441 | be16_to_cpu(sdt->guard_tag), | |
2442 | be16_to_cpu(csum)); | |
2443 | return 0x01; | |
2444 | } | |
773642d9 | 2445 | if (sdebug_dif == SD_DIF_TYPE1_PROTECTION && |
beb40ea4 | 2446 | be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) { |
c1287970 TW |
2447 | pr_err("REF check failed on sector %lu\n", |
2448 | (unsigned long)sector); | |
beb40ea4 AM |
2449 | return 0x03; |
2450 | } | |
773642d9 | 2451 | if (sdebug_dif == SD_DIF_TYPE2_PROTECTION && |
beb40ea4 | 2452 | be32_to_cpu(sdt->ref_tag) != ei_lba) { |
c1287970 TW |
2453 | pr_err("REF check failed on sector %lu\n", |
2454 | (unsigned long)sector); | |
beb40ea4 AM |
2455 | return 0x03; |
2456 | } | |
2457 | return 0; | |
2458 | } | |
2459 | ||
bb8c063c | 2460 | static void dif_copy_prot(struct scsi_cmnd *SCpnt, sector_t sector, |
65f72f2a | 2461 | unsigned int sectors, bool read) |
c6a44287 | 2462 | { |
be4e11be | 2463 | size_t resid; |
c6a44287 | 2464 | void *paddr; |
14faa944 | 2465 | const void *dif_store_end = dif_storep + sdebug_store_sectors; |
be4e11be | 2466 | struct sg_mapping_iter miter; |
c6a44287 | 2467 | |
e18d8bea AM |
2468 | /* Bytes of protection data to copy into sgl */ |
2469 | resid = sectors * sizeof(*dif_storep); | |
c6a44287 | 2470 | |
be4e11be AM |
2471 | sg_miter_start(&miter, scsi_prot_sglist(SCpnt), |
2472 | scsi_prot_sg_count(SCpnt), SG_MITER_ATOMIC | | |
2473 | (read ? SG_MITER_TO_SG : SG_MITER_FROM_SG)); | |
2474 | ||
2475 | while (sg_miter_next(&miter) && resid > 0) { | |
2476 | size_t len = min(miter.length, resid); | |
14faa944 | 2477 | void *start = dif_store(sector); |
be4e11be | 2478 | size_t rest = 0; |
14faa944 AM |
2479 | |
2480 | if (dif_store_end < start + len) | |
2481 | rest = start + len - dif_store_end; | |
c6a44287 | 2482 | |
be4e11be | 2483 | paddr = miter.addr; |
14faa944 | 2484 | |
65f72f2a AM |
2485 | if (read) |
2486 | memcpy(paddr, start, len - rest); | |
2487 | else | |
2488 | memcpy(start, paddr, len - rest); | |
2489 | ||
2490 | if (rest) { | |
2491 | if (read) | |
2492 | memcpy(paddr + len - rest, dif_storep, rest); | |
2493 | else | |
2494 | memcpy(dif_storep, paddr + len - rest, rest); | |
2495 | } | |
c6a44287 | 2496 | |
e18d8bea | 2497 | sector += len / sizeof(*dif_storep); |
c6a44287 | 2498 | resid -= len; |
c6a44287 | 2499 | } |
be4e11be | 2500 | sg_miter_stop(&miter); |
bb8c063c AM |
2501 | } |
2502 | ||
2503 | static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, | |
2504 | unsigned int sectors, u32 ei_lba) | |
2505 | { | |
2506 | unsigned int i; | |
2507 | struct sd_dif_tuple *sdt; | |
2508 | sector_t sector; | |
2509 | ||
c45eabec | 2510 | for (i = 0; i < sectors; i++, ei_lba++) { |
bb8c063c AM |
2511 | int ret; |
2512 | ||
2513 | sector = start_sec + i; | |
2514 | sdt = dif_store(sector); | |
2515 | ||
51d648af | 2516 | if (sdt->app_tag == cpu_to_be16(0xffff)) |
bb8c063c AM |
2517 | continue; |
2518 | ||
2519 | ret = dif_verify(sdt, fake_store(sector), sector, ei_lba); | |
2520 | if (ret) { | |
2521 | dif_errors++; | |
2522 | return ret; | |
2523 | } | |
bb8c063c | 2524 | } |
c6a44287 | 2525 | |
65f72f2a | 2526 | dif_copy_prot(SCpnt, start_sec, sectors, true); |
c6a44287 MP |
2527 | dix_reads++; |
2528 | ||
2529 | return 0; | |
2530 | } | |
2531 | ||
fd32119b | 2532 | static int resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
19789100 | 2533 | { |
c2248fc9 | 2534 | u8 *cmd = scp->cmnd; |
c4837394 | 2535 | struct sdebug_queued_cmd *sqcp; |
c2248fc9 DG |
2536 | u64 lba; |
2537 | u32 num; | |
2538 | u32 ei_lba; | |
19789100 FT |
2539 | unsigned long iflags; |
2540 | int ret; | |
c2248fc9 | 2541 | bool check_prot; |
19789100 | 2542 | |
c2248fc9 DG |
2543 | switch (cmd[0]) { |
2544 | case READ_16: | |
2545 | ei_lba = 0; | |
2546 | lba = get_unaligned_be64(cmd + 2); | |
2547 | num = get_unaligned_be32(cmd + 10); | |
2548 | check_prot = true; | |
2549 | break; | |
2550 | case READ_10: | |
2551 | ei_lba = 0; | |
2552 | lba = get_unaligned_be32(cmd + 2); | |
2553 | num = get_unaligned_be16(cmd + 7); | |
2554 | check_prot = true; | |
2555 | break; | |
2556 | case READ_6: | |
2557 | ei_lba = 0; | |
2558 | lba = (u32)cmd[3] | (u32)cmd[2] << 8 | | |
2559 | (u32)(cmd[1] & 0x1f) << 16; | |
2560 | num = (0 == cmd[4]) ? 256 : cmd[4]; | |
2561 | check_prot = true; | |
2562 | break; | |
2563 | case READ_12: | |
2564 | ei_lba = 0; | |
2565 | lba = get_unaligned_be32(cmd + 2); | |
2566 | num = get_unaligned_be32(cmd + 6); | |
2567 | check_prot = true; | |
2568 | break; | |
2569 | case XDWRITEREAD_10: | |
2570 | ei_lba = 0; | |
2571 | lba = get_unaligned_be32(cmd + 2); | |
2572 | num = get_unaligned_be16(cmd + 7); | |
2573 | check_prot = false; | |
2574 | break; | |
2575 | default: /* assume READ(32) */ | |
2576 | lba = get_unaligned_be64(cmd + 12); | |
2577 | ei_lba = get_unaligned_be32(cmd + 20); | |
2578 | num = get_unaligned_be32(cmd + 28); | |
2579 | check_prot = false; | |
2580 | break; | |
2581 | } | |
f46eb0e9 | 2582 | if (unlikely(have_dif_prot && check_prot)) { |
773642d9 | 2583 | if (sdebug_dif == SD_DIF_TYPE2_PROTECTION && |
c2248fc9 DG |
2584 | (cmd[1] & 0xe0)) { |
2585 | mk_sense_invalid_opcode(scp); | |
2586 | return check_condition_result; | |
2587 | } | |
773642d9 DG |
2588 | if ((sdebug_dif == SD_DIF_TYPE1_PROTECTION || |
2589 | sdebug_dif == SD_DIF_TYPE3_PROTECTION) && | |
c2248fc9 DG |
2590 | (cmd[1] & 0xe0) == 0) |
2591 | sdev_printk(KERN_ERR, scp->device, "Unprotected RD " | |
2592 | "to DIF device\n"); | |
2593 | } | |
f46eb0e9 | 2594 | if (unlikely(sdebug_any_injecting_opt)) { |
c4837394 | 2595 | sqcp = (struct sdebug_queued_cmd *)scp->host_scribble; |
c2248fc9 | 2596 | |
c4837394 DG |
2597 | if (sqcp) { |
2598 | if (sqcp->inj_short) | |
2599 | num /= 2; | |
2600 | } | |
2601 | } else | |
2602 | sqcp = NULL; | |
c2248fc9 DG |
2603 | |
2604 | /* inline check_device_access_params() */ | |
f46eb0e9 | 2605 | if (unlikely(lba + num > sdebug_capacity)) { |
c2248fc9 DG |
2606 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
2607 | return check_condition_result; | |
2608 | } | |
2609 | /* transfer length excessive (tie in to block limits VPD page) */ | |
f46eb0e9 | 2610 | if (unlikely(num > sdebug_store_sectors)) { |
c2248fc9 DG |
2611 | /* needs work to find which cdb byte 'num' comes from */ |
2612 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
2613 | return check_condition_result; | |
2614 | } | |
19789100 | 2615 | |
f46eb0e9 DG |
2616 | if (unlikely((SDEBUG_OPT_MEDIUM_ERR & sdebug_opts) && |
2617 | (lba <= (OPT_MEDIUM_ERR_ADDR + OPT_MEDIUM_ERR_NUM - 1)) && | |
2618 | ((lba + num) > OPT_MEDIUM_ERR_ADDR))) { | |
c65b1445 | 2619 | /* claim unrecoverable read error */ |
c2248fc9 | 2620 | mk_sense_buffer(scp, MEDIUM_ERROR, UNRECOVERED_READ_ERR, 0); |
c65b1445 | 2621 | /* set info field and valid bit for fixed descriptor */ |
c2248fc9 DG |
2622 | if (0x70 == (scp->sense_buffer[0] & 0x7f)) { |
2623 | scp->sense_buffer[0] |= 0x80; /* Valid bit */ | |
32f7ef73 DG |
2624 | ret = (lba < OPT_MEDIUM_ERR_ADDR) |
2625 | ? OPT_MEDIUM_ERR_ADDR : (int)lba; | |
c2248fc9 | 2626 | put_unaligned_be32(ret, scp->sense_buffer + 3); |
c65b1445 | 2627 | } |
c2248fc9 | 2628 | scsi_set_resid(scp, scsi_bufflen(scp)); |
1da177e4 LT |
2629 | return check_condition_result; |
2630 | } | |
c6a44287 | 2631 | |
6c78cc06 AM |
2632 | read_lock_irqsave(&atomic_rw, iflags); |
2633 | ||
c6a44287 | 2634 | /* DIX + T10 DIF */ |
f46eb0e9 | 2635 | if (unlikely(sdebug_dix && scsi_prot_sg_count(scp))) { |
c2248fc9 | 2636 | int prot_ret = prot_verify_read(scp, lba, num, ei_lba); |
c6a44287 MP |
2637 | |
2638 | if (prot_ret) { | |
6c78cc06 | 2639 | read_unlock_irqrestore(&atomic_rw, iflags); |
c2248fc9 | 2640 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, prot_ret); |
c6a44287 MP |
2641 | return illegal_condition_result; |
2642 | } | |
2643 | } | |
2644 | ||
c2248fc9 | 2645 | ret = do_device_access(scp, lba, num, false); |
1da177e4 | 2646 | read_unlock_irqrestore(&atomic_rw, iflags); |
f46eb0e9 | 2647 | if (unlikely(ret == -1)) |
a4517511 AM |
2648 | return DID_ERROR << 16; |
2649 | ||
c2248fc9 | 2650 | scsi_in(scp)->resid = scsi_bufflen(scp) - ret; |
a4517511 | 2651 | |
c4837394 DG |
2652 | if (unlikely(sqcp)) { |
2653 | if (sqcp->inj_recovered) { | |
c2248fc9 DG |
2654 | mk_sense_buffer(scp, RECOVERED_ERROR, |
2655 | THRESHOLD_EXCEEDED, 0); | |
2656 | return check_condition_result; | |
c4837394 | 2657 | } else if (sqcp->inj_transport) { |
c2248fc9 DG |
2658 | mk_sense_buffer(scp, ABORTED_COMMAND, |
2659 | TRANSPORT_PROBLEM, ACK_NAK_TO); | |
2660 | return check_condition_result; | |
c4837394 | 2661 | } else if (sqcp->inj_dif) { |
c2248fc9 DG |
2662 | /* Logical block guard check failed */ |
2663 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); | |
2664 | return illegal_condition_result; | |
c4837394 | 2665 | } else if (sqcp->inj_dix) { |
c2248fc9 DG |
2666 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); |
2667 | return illegal_condition_result; | |
2668 | } | |
2669 | } | |
a4517511 | 2670 | return 0; |
1da177e4 LT |
2671 | } |
2672 | ||
58a8635d | 2673 | static void dump_sector(unsigned char *buf, int len) |
c6a44287 | 2674 | { |
cbf67842 | 2675 | int i, j, n; |
c6a44287 | 2676 | |
cbf67842 | 2677 | pr_err(">>> Sector Dump <<<\n"); |
c6a44287 | 2678 | for (i = 0 ; i < len ; i += 16) { |
cbf67842 | 2679 | char b[128]; |
c6a44287 | 2680 | |
cbf67842 | 2681 | for (j = 0, n = 0; j < 16; j++) { |
c6a44287 | 2682 | unsigned char c = buf[i+j]; |
cbf67842 | 2683 | |
c6a44287 | 2684 | if (c >= 0x20 && c < 0x7e) |
cbf67842 DG |
2685 | n += scnprintf(b + n, sizeof(b) - n, |
2686 | " %c ", buf[i+j]); | |
c6a44287 | 2687 | else |
cbf67842 DG |
2688 | n += scnprintf(b + n, sizeof(b) - n, |
2689 | "%02x ", buf[i+j]); | |
c6a44287 | 2690 | } |
cbf67842 | 2691 | pr_err("%04d: %s\n", i, b); |
c6a44287 MP |
2692 | } |
2693 | } | |
2694 | ||
2695 | static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, | |
395cef03 | 2696 | unsigned int sectors, u32 ei_lba) |
c6a44287 | 2697 | { |
be4e11be | 2698 | int ret; |
c6a44287 | 2699 | struct sd_dif_tuple *sdt; |
be4e11be | 2700 | void *daddr; |
65f72f2a | 2701 | sector_t sector = start_sec; |
c6a44287 | 2702 | int ppage_offset; |
be4e11be AM |
2703 | int dpage_offset; |
2704 | struct sg_mapping_iter diter; | |
2705 | struct sg_mapping_iter piter; | |
c6a44287 | 2706 | |
c6a44287 MP |
2707 | BUG_ON(scsi_sg_count(SCpnt) == 0); |
2708 | BUG_ON(scsi_prot_sg_count(SCpnt) == 0); | |
2709 | ||
be4e11be AM |
2710 | sg_miter_start(&piter, scsi_prot_sglist(SCpnt), |
2711 | scsi_prot_sg_count(SCpnt), | |
2712 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); | |
2713 | sg_miter_start(&diter, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), | |
2714 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); | |
2715 | ||
2716 | /* For each protection page */ | |
2717 | while (sg_miter_next(&piter)) { | |
2718 | dpage_offset = 0; | |
2719 | if (WARN_ON(!sg_miter_next(&diter))) { | |
2720 | ret = 0x01; | |
2721 | goto out; | |
2722 | } | |
c6a44287 | 2723 | |
be4e11be AM |
2724 | for (ppage_offset = 0; ppage_offset < piter.length; |
2725 | ppage_offset += sizeof(struct sd_dif_tuple)) { | |
c6a44287 | 2726 | /* If we're at the end of the current |
be4e11be | 2727 | * data page advance to the next one |
c6a44287 | 2728 | */ |
be4e11be AM |
2729 | if (dpage_offset >= diter.length) { |
2730 | if (WARN_ON(!sg_miter_next(&diter))) { | |
2731 | ret = 0x01; | |
2732 | goto out; | |
2733 | } | |
2734 | dpage_offset = 0; | |
c6a44287 MP |
2735 | } |
2736 | ||
be4e11be AM |
2737 | sdt = piter.addr + ppage_offset; |
2738 | daddr = diter.addr + dpage_offset; | |
c6a44287 | 2739 | |
be4e11be | 2740 | ret = dif_verify(sdt, daddr, sector, ei_lba); |
beb40ea4 | 2741 | if (ret) { |
773642d9 | 2742 | dump_sector(daddr, sdebug_sector_size); |
395cef03 MP |
2743 | goto out; |
2744 | } | |
2745 | ||
c6a44287 | 2746 | sector++; |
395cef03 | 2747 | ei_lba++; |
773642d9 | 2748 | dpage_offset += sdebug_sector_size; |
c6a44287 | 2749 | } |
be4e11be AM |
2750 | diter.consumed = dpage_offset; |
2751 | sg_miter_stop(&diter); | |
c6a44287 | 2752 | } |
be4e11be | 2753 | sg_miter_stop(&piter); |
c6a44287 | 2754 | |
65f72f2a | 2755 | dif_copy_prot(SCpnt, start_sec, sectors, false); |
c6a44287 MP |
2756 | dix_writes++; |
2757 | ||
2758 | return 0; | |
2759 | ||
2760 | out: | |
2761 | dif_errors++; | |
be4e11be AM |
2762 | sg_miter_stop(&diter); |
2763 | sg_miter_stop(&piter); | |
c6a44287 MP |
2764 | return ret; |
2765 | } | |
2766 | ||
b90ebc3d AM |
2767 | static unsigned long lba_to_map_index(sector_t lba) |
2768 | { | |
773642d9 DG |
2769 | if (sdebug_unmap_alignment) |
2770 | lba += sdebug_unmap_granularity - sdebug_unmap_alignment; | |
2771 | sector_div(lba, sdebug_unmap_granularity); | |
b90ebc3d AM |
2772 | return lba; |
2773 | } | |
2774 | ||
2775 | static sector_t map_index_to_lba(unsigned long index) | |
44d92694 | 2776 | { |
773642d9 | 2777 | sector_t lba = index * sdebug_unmap_granularity; |
a027b5b9 | 2778 | |
773642d9 DG |
2779 | if (sdebug_unmap_alignment) |
2780 | lba -= sdebug_unmap_granularity - sdebug_unmap_alignment; | |
a027b5b9 | 2781 | return lba; |
b90ebc3d | 2782 | } |
44d92694 | 2783 | |
b90ebc3d AM |
2784 | static unsigned int map_state(sector_t lba, unsigned int *num) |
2785 | { | |
2786 | sector_t end; | |
2787 | unsigned int mapped; | |
2788 | unsigned long index; | |
2789 | unsigned long next; | |
44d92694 | 2790 | |
b90ebc3d AM |
2791 | index = lba_to_map_index(lba); |
2792 | mapped = test_bit(index, map_storep); | |
44d92694 MP |
2793 | |
2794 | if (mapped) | |
b90ebc3d | 2795 | next = find_next_zero_bit(map_storep, map_size, index); |
44d92694 | 2796 | else |
b90ebc3d | 2797 | next = find_next_bit(map_storep, map_size, index); |
44d92694 | 2798 | |
b90ebc3d | 2799 | end = min_t(sector_t, sdebug_store_sectors, map_index_to_lba(next)); |
44d92694 | 2800 | *num = end - lba; |
44d92694 MP |
2801 | return mapped; |
2802 | } | |
2803 | ||
2804 | static void map_region(sector_t lba, unsigned int len) | |
2805 | { | |
44d92694 MP |
2806 | sector_t end = lba + len; |
2807 | ||
44d92694 | 2808 | while (lba < end) { |
b90ebc3d | 2809 | unsigned long index = lba_to_map_index(lba); |
44d92694 | 2810 | |
b90ebc3d AM |
2811 | if (index < map_size) |
2812 | set_bit(index, map_storep); | |
44d92694 | 2813 | |
b90ebc3d | 2814 | lba = map_index_to_lba(index + 1); |
44d92694 MP |
2815 | } |
2816 | } | |
2817 | ||
2818 | static void unmap_region(sector_t lba, unsigned int len) | |
2819 | { | |
44d92694 MP |
2820 | sector_t end = lba + len; |
2821 | ||
44d92694 | 2822 | while (lba < end) { |
b90ebc3d | 2823 | unsigned long index = lba_to_map_index(lba); |
44d92694 | 2824 | |
b90ebc3d | 2825 | if (lba == map_index_to_lba(index) && |
773642d9 | 2826 | lba + sdebug_unmap_granularity <= end && |
b90ebc3d AM |
2827 | index < map_size) { |
2828 | clear_bit(index, map_storep); | |
760f3b03 | 2829 | if (sdebug_lbprz) { /* for LBPRZ=2 return 0xff_s */ |
be1dd78d | 2830 | memset(fake_storep + |
760f3b03 DG |
2831 | lba * sdebug_sector_size, |
2832 | (sdebug_lbprz & 1) ? 0 : 0xff, | |
773642d9 DG |
2833 | sdebug_sector_size * |
2834 | sdebug_unmap_granularity); | |
b90ebc3d | 2835 | } |
e9926b43 AM |
2836 | if (dif_storep) { |
2837 | memset(dif_storep + lba, 0xff, | |
2838 | sizeof(*dif_storep) * | |
773642d9 | 2839 | sdebug_unmap_granularity); |
e9926b43 | 2840 | } |
be1dd78d | 2841 | } |
b90ebc3d | 2842 | lba = map_index_to_lba(index + 1); |
44d92694 MP |
2843 | } |
2844 | } | |
2845 | ||
fd32119b | 2846 | static int resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
1da177e4 | 2847 | { |
c2248fc9 DG |
2848 | u8 *cmd = scp->cmnd; |
2849 | u64 lba; | |
2850 | u32 num; | |
2851 | u32 ei_lba; | |
1da177e4 | 2852 | unsigned long iflags; |
19789100 | 2853 | int ret; |
c2248fc9 | 2854 | bool check_prot; |
1da177e4 | 2855 | |
c2248fc9 DG |
2856 | switch (cmd[0]) { |
2857 | case WRITE_16: | |
2858 | ei_lba = 0; | |
2859 | lba = get_unaligned_be64(cmd + 2); | |
2860 | num = get_unaligned_be32(cmd + 10); | |
2861 | check_prot = true; | |
2862 | break; | |
2863 | case WRITE_10: | |
2864 | ei_lba = 0; | |
2865 | lba = get_unaligned_be32(cmd + 2); | |
2866 | num = get_unaligned_be16(cmd + 7); | |
2867 | check_prot = true; | |
2868 | break; | |
2869 | case WRITE_6: | |
2870 | ei_lba = 0; | |
2871 | lba = (u32)cmd[3] | (u32)cmd[2] << 8 | | |
2872 | (u32)(cmd[1] & 0x1f) << 16; | |
2873 | num = (0 == cmd[4]) ? 256 : cmd[4]; | |
2874 | check_prot = true; | |
2875 | break; | |
2876 | case WRITE_12: | |
2877 | ei_lba = 0; | |
2878 | lba = get_unaligned_be32(cmd + 2); | |
2879 | num = get_unaligned_be32(cmd + 6); | |
2880 | check_prot = true; | |
2881 | break; | |
2882 | case 0x53: /* XDWRITEREAD(10) */ | |
2883 | ei_lba = 0; | |
2884 | lba = get_unaligned_be32(cmd + 2); | |
2885 | num = get_unaligned_be16(cmd + 7); | |
2886 | check_prot = false; | |
2887 | break; | |
2888 | default: /* assume WRITE(32) */ | |
2889 | lba = get_unaligned_be64(cmd + 12); | |
2890 | ei_lba = get_unaligned_be32(cmd + 20); | |
2891 | num = get_unaligned_be32(cmd + 28); | |
2892 | check_prot = false; | |
2893 | break; | |
2894 | } | |
f46eb0e9 | 2895 | if (unlikely(have_dif_prot && check_prot)) { |
773642d9 | 2896 | if (sdebug_dif == SD_DIF_TYPE2_PROTECTION && |
c2248fc9 DG |
2897 | (cmd[1] & 0xe0)) { |
2898 | mk_sense_invalid_opcode(scp); | |
2899 | return check_condition_result; | |
2900 | } | |
773642d9 DG |
2901 | if ((sdebug_dif == SD_DIF_TYPE1_PROTECTION || |
2902 | sdebug_dif == SD_DIF_TYPE3_PROTECTION) && | |
c2248fc9 DG |
2903 | (cmd[1] & 0xe0) == 0) |
2904 | sdev_printk(KERN_ERR, scp->device, "Unprotected WR " | |
2905 | "to DIF device\n"); | |
2906 | } | |
2907 | ||
2908 | /* inline check_device_access_params() */ | |
f46eb0e9 | 2909 | if (unlikely(lba + num > sdebug_capacity)) { |
c2248fc9 DG |
2910 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
2911 | return check_condition_result; | |
2912 | } | |
2913 | /* transfer length excessive (tie in to block limits VPD page) */ | |
f46eb0e9 | 2914 | if (unlikely(num > sdebug_store_sectors)) { |
c2248fc9 DG |
2915 | /* needs work to find which cdb byte 'num' comes from */ |
2916 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
2917 | return check_condition_result; | |
2918 | } | |
1da177e4 | 2919 | |
6c78cc06 AM |
2920 | write_lock_irqsave(&atomic_rw, iflags); |
2921 | ||
c6a44287 | 2922 | /* DIX + T10 DIF */ |
f46eb0e9 | 2923 | if (unlikely(sdebug_dix && scsi_prot_sg_count(scp))) { |
c2248fc9 | 2924 | int prot_ret = prot_verify_write(scp, lba, num, ei_lba); |
c6a44287 MP |
2925 | |
2926 | if (prot_ret) { | |
6c78cc06 | 2927 | write_unlock_irqrestore(&atomic_rw, iflags); |
c2248fc9 | 2928 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, prot_ret); |
c6a44287 MP |
2929 | return illegal_condition_result; |
2930 | } | |
2931 | } | |
2932 | ||
c2248fc9 | 2933 | ret = do_device_access(scp, lba, num, true); |
f46eb0e9 | 2934 | if (unlikely(scsi_debug_lbp())) |
44d92694 | 2935 | map_region(lba, num); |
1da177e4 | 2936 | write_unlock_irqrestore(&atomic_rw, iflags); |
f46eb0e9 | 2937 | if (unlikely(-1 == ret)) |
773642d9 | 2938 | return DID_ERROR << 16; |
c4837394 DG |
2939 | else if (unlikely(sdebug_verbose && |
2940 | (ret < (num * sdebug_sector_size)))) | |
c2248fc9 | 2941 | sdev_printk(KERN_INFO, scp->device, |
cbf67842 | 2942 | "%s: write: cdb indicated=%u, IO sent=%d bytes\n", |
773642d9 | 2943 | my_name, num * sdebug_sector_size, ret); |
44d92694 | 2944 | |
f46eb0e9 | 2945 | if (unlikely(sdebug_any_injecting_opt)) { |
c4837394 DG |
2946 | struct sdebug_queued_cmd *sqcp = |
2947 | (struct sdebug_queued_cmd *)scp->host_scribble; | |
c2248fc9 | 2948 | |
c4837394 DG |
2949 | if (sqcp) { |
2950 | if (sqcp->inj_recovered) { | |
2951 | mk_sense_buffer(scp, RECOVERED_ERROR, | |
2952 | THRESHOLD_EXCEEDED, 0); | |
2953 | return check_condition_result; | |
2954 | } else if (sqcp->inj_dif) { | |
2955 | /* Logical block guard check failed */ | |
2956 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); | |
2957 | return illegal_condition_result; | |
2958 | } else if (sqcp->inj_dix) { | |
2959 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); | |
2960 | return illegal_condition_result; | |
2961 | } | |
c2248fc9 DG |
2962 | } |
2963 | } | |
44d92694 MP |
2964 | return 0; |
2965 | } | |
2966 | ||
fd32119b DG |
2967 | static int resp_write_same(struct scsi_cmnd *scp, u64 lba, u32 num, |
2968 | u32 ei_lba, bool unmap, bool ndob) | |
44d92694 MP |
2969 | { |
2970 | unsigned long iflags; | |
2971 | unsigned long long i; | |
2972 | int ret; | |
773642d9 | 2973 | u64 lba_off; |
44d92694 | 2974 | |
c2248fc9 | 2975 | ret = check_device_access_params(scp, lba, num); |
44d92694 MP |
2976 | if (ret) |
2977 | return ret; | |
2978 | ||
2979 | write_lock_irqsave(&atomic_rw, iflags); | |
2980 | ||
9ed8d3dc | 2981 | if (unmap && scsi_debug_lbp()) { |
44d92694 MP |
2982 | unmap_region(lba, num); |
2983 | goto out; | |
2984 | } | |
2985 | ||
773642d9 | 2986 | lba_off = lba * sdebug_sector_size; |
c2248fc9 DG |
2987 | /* if ndob then zero 1 logical block, else fetch 1 logical block */ |
2988 | if (ndob) { | |
773642d9 | 2989 | memset(fake_storep + lba_off, 0, sdebug_sector_size); |
c2248fc9 DG |
2990 | ret = 0; |
2991 | } else | |
773642d9 DG |
2992 | ret = fetch_to_dev_buffer(scp, fake_storep + lba_off, |
2993 | sdebug_sector_size); | |
44d92694 MP |
2994 | |
2995 | if (-1 == ret) { | |
2996 | write_unlock_irqrestore(&atomic_rw, iflags); | |
773642d9 DG |
2997 | return DID_ERROR << 16; |
2998 | } else if (sdebug_verbose && (ret < (num * sdebug_sector_size))) | |
c2248fc9 | 2999 | sdev_printk(KERN_INFO, scp->device, |
cbf67842 DG |
3000 | "%s: %s: cdb indicated=%u, IO sent=%d bytes\n", |
3001 | my_name, "write same", | |
773642d9 | 3002 | num * sdebug_sector_size, ret); |
44d92694 MP |
3003 | |
3004 | /* Copy first sector to remaining blocks */ | |
3005 | for (i = 1 ; i < num ; i++) | |
773642d9 DG |
3006 | memcpy(fake_storep + ((lba + i) * sdebug_sector_size), |
3007 | fake_storep + lba_off, | |
3008 | sdebug_sector_size); | |
44d92694 | 3009 | |
9ed8d3dc | 3010 | if (scsi_debug_lbp()) |
44d92694 MP |
3011 | map_region(lba, num); |
3012 | out: | |
3013 | write_unlock_irqrestore(&atomic_rw, iflags); | |
3014 | ||
1da177e4 LT |
3015 | return 0; |
3016 | } | |
3017 | ||
fd32119b DG |
3018 | static int resp_write_same_10(struct scsi_cmnd *scp, |
3019 | struct sdebug_dev_info *devip) | |
c2248fc9 DG |
3020 | { |
3021 | u8 *cmd = scp->cmnd; | |
3022 | u32 lba; | |
3023 | u16 num; | |
3024 | u32 ei_lba = 0; | |
3025 | bool unmap = false; | |
3026 | ||
3027 | if (cmd[1] & 0x8) { | |
773642d9 | 3028 | if (sdebug_lbpws10 == 0) { |
c2248fc9 DG |
3029 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 3); |
3030 | return check_condition_result; | |
3031 | } else | |
3032 | unmap = true; | |
3033 | } | |
3034 | lba = get_unaligned_be32(cmd + 2); | |
3035 | num = get_unaligned_be16(cmd + 7); | |
773642d9 | 3036 | if (num > sdebug_write_same_length) { |
c2248fc9 DG |
3037 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 7, -1); |
3038 | return check_condition_result; | |
3039 | } | |
3040 | return resp_write_same(scp, lba, num, ei_lba, unmap, false); | |
3041 | } | |
3042 | ||
fd32119b DG |
3043 | static int resp_write_same_16(struct scsi_cmnd *scp, |
3044 | struct sdebug_dev_info *devip) | |
c2248fc9 DG |
3045 | { |
3046 | u8 *cmd = scp->cmnd; | |
3047 | u64 lba; | |
3048 | u32 num; | |
3049 | u32 ei_lba = 0; | |
3050 | bool unmap = false; | |
3051 | bool ndob = false; | |
3052 | ||
3053 | if (cmd[1] & 0x8) { /* UNMAP */ | |
773642d9 | 3054 | if (sdebug_lbpws == 0) { |
c2248fc9 DG |
3055 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 3); |
3056 | return check_condition_result; | |
3057 | } else | |
3058 | unmap = true; | |
3059 | } | |
3060 | if (cmd[1] & 0x1) /* NDOB (no data-out buffer, assumes zeroes) */ | |
3061 | ndob = true; | |
3062 | lba = get_unaligned_be64(cmd + 2); | |
3063 | num = get_unaligned_be32(cmd + 10); | |
773642d9 | 3064 | if (num > sdebug_write_same_length) { |
c2248fc9 DG |
3065 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 10, -1); |
3066 | return check_condition_result; | |
3067 | } | |
3068 | return resp_write_same(scp, lba, num, ei_lba, unmap, ndob); | |
3069 | } | |
3070 | ||
acafd0b9 EM |
3071 | /* Note the mode field is in the same position as the (lower) service action |
3072 | * field. For the Report supported operation codes command, SPC-4 suggests | |
3073 | * each mode of this command should be reported separately; for future. */ | |
fd32119b DG |
3074 | static int resp_write_buffer(struct scsi_cmnd *scp, |
3075 | struct sdebug_dev_info *devip) | |
acafd0b9 EM |
3076 | { |
3077 | u8 *cmd = scp->cmnd; | |
3078 | struct scsi_device *sdp = scp->device; | |
3079 | struct sdebug_dev_info *dp; | |
3080 | u8 mode; | |
3081 | ||
3082 | mode = cmd[1] & 0x1f; | |
3083 | switch (mode) { | |
3084 | case 0x4: /* download microcode (MC) and activate (ACT) */ | |
3085 | /* set UAs on this device only */ | |
3086 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
3087 | set_bit(SDEBUG_UA_MICROCODE_CHANGED, devip->uas_bm); | |
3088 | break; | |
3089 | case 0x5: /* download MC, save and ACT */ | |
3090 | set_bit(SDEBUG_UA_MICROCODE_CHANGED_WO_RESET, devip->uas_bm); | |
3091 | break; | |
3092 | case 0x6: /* download MC with offsets and ACT */ | |
3093 | /* set UAs on most devices (LUs) in this target */ | |
3094 | list_for_each_entry(dp, | |
3095 | &devip->sdbg_host->dev_info_list, | |
3096 | dev_list) | |
3097 | if (dp->target == sdp->id) { | |
3098 | set_bit(SDEBUG_UA_BUS_RESET, dp->uas_bm); | |
3099 | if (devip != dp) | |
3100 | set_bit(SDEBUG_UA_MICROCODE_CHANGED, | |
3101 | dp->uas_bm); | |
3102 | } | |
3103 | break; | |
3104 | case 0x7: /* download MC with offsets, save, and ACT */ | |
3105 | /* set UA on all devices (LUs) in this target */ | |
3106 | list_for_each_entry(dp, | |
3107 | &devip->sdbg_host->dev_info_list, | |
3108 | dev_list) | |
3109 | if (dp->target == sdp->id) | |
3110 | set_bit(SDEBUG_UA_MICROCODE_CHANGED_WO_RESET, | |
3111 | dp->uas_bm); | |
3112 | break; | |
3113 | default: | |
3114 | /* do nothing for this command for other mode values */ | |
3115 | break; | |
3116 | } | |
3117 | return 0; | |
3118 | } | |
3119 | ||
fd32119b DG |
3120 | static int resp_comp_write(struct scsi_cmnd *scp, |
3121 | struct sdebug_dev_info *devip) | |
38d5c833 DG |
3122 | { |
3123 | u8 *cmd = scp->cmnd; | |
3124 | u8 *arr; | |
3125 | u8 *fake_storep_hold; | |
3126 | u64 lba; | |
3127 | u32 dnum; | |
773642d9 | 3128 | u32 lb_size = sdebug_sector_size; |
38d5c833 DG |
3129 | u8 num; |
3130 | unsigned long iflags; | |
3131 | int ret; | |
d467d31f | 3132 | int retval = 0; |
38d5c833 | 3133 | |
d467d31f | 3134 | lba = get_unaligned_be64(cmd + 2); |
38d5c833 DG |
3135 | num = cmd[13]; /* 1 to a maximum of 255 logical blocks */ |
3136 | if (0 == num) | |
3137 | return 0; /* degenerate case, not an error */ | |
773642d9 | 3138 | if (sdebug_dif == SD_DIF_TYPE2_PROTECTION && |
38d5c833 DG |
3139 | (cmd[1] & 0xe0)) { |
3140 | mk_sense_invalid_opcode(scp); | |
3141 | return check_condition_result; | |
3142 | } | |
773642d9 DG |
3143 | if ((sdebug_dif == SD_DIF_TYPE1_PROTECTION || |
3144 | sdebug_dif == SD_DIF_TYPE3_PROTECTION) && | |
38d5c833 DG |
3145 | (cmd[1] & 0xe0) == 0) |
3146 | sdev_printk(KERN_ERR, scp->device, "Unprotected WR " | |
3147 | "to DIF device\n"); | |
3148 | ||
3149 | /* inline check_device_access_params() */ | |
3150 | if (lba + num > sdebug_capacity) { | |
3151 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
3152 | return check_condition_result; | |
3153 | } | |
3154 | /* transfer length excessive (tie in to block limits VPD page) */ | |
3155 | if (num > sdebug_store_sectors) { | |
3156 | /* needs work to find which cdb byte 'num' comes from */ | |
3157 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
3158 | return check_condition_result; | |
3159 | } | |
d467d31f DG |
3160 | dnum = 2 * num; |
3161 | arr = kzalloc(dnum * lb_size, GFP_ATOMIC); | |
3162 | if (NULL == arr) { | |
3163 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
3164 | INSUFF_RES_ASCQ); | |
3165 | return check_condition_result; | |
3166 | } | |
38d5c833 DG |
3167 | |
3168 | write_lock_irqsave(&atomic_rw, iflags); | |
3169 | ||
3170 | /* trick do_device_access() to fetch both compare and write buffers | |
3171 | * from data-in into arr. Safe (atomic) since write_lock held. */ | |
3172 | fake_storep_hold = fake_storep; | |
3173 | fake_storep = arr; | |
3174 | ret = do_device_access(scp, 0, dnum, true); | |
3175 | fake_storep = fake_storep_hold; | |
3176 | if (ret == -1) { | |
d467d31f DG |
3177 | retval = DID_ERROR << 16; |
3178 | goto cleanup; | |
773642d9 | 3179 | } else if (sdebug_verbose && (ret < (dnum * lb_size))) |
38d5c833 DG |
3180 | sdev_printk(KERN_INFO, scp->device, "%s: compare_write: cdb " |
3181 | "indicated=%u, IO sent=%d bytes\n", my_name, | |
3182 | dnum * lb_size, ret); | |
3183 | if (!comp_write_worker(lba, num, arr)) { | |
38d5c833 | 3184 | mk_sense_buffer(scp, MISCOMPARE, MISCOMPARE_VERIFY_ASC, 0); |
d467d31f DG |
3185 | retval = check_condition_result; |
3186 | goto cleanup; | |
38d5c833 DG |
3187 | } |
3188 | if (scsi_debug_lbp()) | |
3189 | map_region(lba, num); | |
d467d31f | 3190 | cleanup: |
38d5c833 | 3191 | write_unlock_irqrestore(&atomic_rw, iflags); |
d467d31f DG |
3192 | kfree(arr); |
3193 | return retval; | |
38d5c833 DG |
3194 | } |
3195 | ||
44d92694 MP |
3196 | struct unmap_block_desc { |
3197 | __be64 lba; | |
3198 | __be32 blocks; | |
3199 | __be32 __reserved; | |
3200 | }; | |
3201 | ||
fd32119b | 3202 | static int resp_unmap(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
44d92694 MP |
3203 | { |
3204 | unsigned char *buf; | |
3205 | struct unmap_block_desc *desc; | |
3206 | unsigned int i, payload_len, descriptors; | |
3207 | int ret; | |
6c78cc06 | 3208 | unsigned long iflags; |
44d92694 | 3209 | |
44d92694 | 3210 | |
c2248fc9 DG |
3211 | if (!scsi_debug_lbp()) |
3212 | return 0; /* fib and say its done */ | |
3213 | payload_len = get_unaligned_be16(scp->cmnd + 7); | |
3214 | BUG_ON(scsi_bufflen(scp) != payload_len); | |
44d92694 MP |
3215 | |
3216 | descriptors = (payload_len - 8) / 16; | |
773642d9 | 3217 | if (descriptors > sdebug_unmap_max_desc) { |
c2248fc9 DG |
3218 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 7, -1); |
3219 | return check_condition_result; | |
3220 | } | |
44d92694 | 3221 | |
b333a819 | 3222 | buf = kzalloc(scsi_bufflen(scp), GFP_ATOMIC); |
c2248fc9 DG |
3223 | if (!buf) { |
3224 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
3225 | INSUFF_RES_ASCQ); | |
44d92694 | 3226 | return check_condition_result; |
c2248fc9 | 3227 | } |
44d92694 | 3228 | |
c2248fc9 | 3229 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
44d92694 MP |
3230 | |
3231 | BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2); | |
3232 | BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16); | |
3233 | ||
3234 | desc = (void *)&buf[8]; | |
3235 | ||
6c78cc06 AM |
3236 | write_lock_irqsave(&atomic_rw, iflags); |
3237 | ||
44d92694 MP |
3238 | for (i = 0 ; i < descriptors ; i++) { |
3239 | unsigned long long lba = get_unaligned_be64(&desc[i].lba); | |
3240 | unsigned int num = get_unaligned_be32(&desc[i].blocks); | |
3241 | ||
c2248fc9 | 3242 | ret = check_device_access_params(scp, lba, num); |
44d92694 MP |
3243 | if (ret) |
3244 | goto out; | |
3245 | ||
3246 | unmap_region(lba, num); | |
3247 | } | |
3248 | ||
3249 | ret = 0; | |
3250 | ||
3251 | out: | |
6c78cc06 | 3252 | write_unlock_irqrestore(&atomic_rw, iflags); |
44d92694 MP |
3253 | kfree(buf); |
3254 | ||
3255 | return ret; | |
3256 | } | |
3257 | ||
3258 | #define SDEBUG_GET_LBA_STATUS_LEN 32 | |
3259 | ||
fd32119b DG |
3260 | static int resp_get_lba_status(struct scsi_cmnd *scp, |
3261 | struct sdebug_dev_info *devip) | |
44d92694 | 3262 | { |
c2248fc9 DG |
3263 | u8 *cmd = scp->cmnd; |
3264 | u64 lba; | |
3265 | u32 alloc_len, mapped, num; | |
3266 | u8 arr[SDEBUG_GET_LBA_STATUS_LEN]; | |
44d92694 MP |
3267 | int ret; |
3268 | ||
c2248fc9 DG |
3269 | lba = get_unaligned_be64(cmd + 2); |
3270 | alloc_len = get_unaligned_be32(cmd + 10); | |
44d92694 MP |
3271 | |
3272 | if (alloc_len < 24) | |
3273 | return 0; | |
3274 | ||
c2248fc9 | 3275 | ret = check_device_access_params(scp, lba, 1); |
44d92694 MP |
3276 | if (ret) |
3277 | return ret; | |
3278 | ||
c2248fc9 DG |
3279 | if (scsi_debug_lbp()) |
3280 | mapped = map_state(lba, &num); | |
3281 | else { | |
3282 | mapped = 1; | |
3283 | /* following just in case virtual_gb changed */ | |
3284 | sdebug_capacity = get_sdebug_capacity(); | |
3285 | if (sdebug_capacity - lba <= 0xffffffff) | |
3286 | num = sdebug_capacity - lba; | |
3287 | else | |
3288 | num = 0xffffffff; | |
3289 | } | |
44d92694 MP |
3290 | |
3291 | memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN); | |
c2248fc9 DG |
3292 | put_unaligned_be32(20, arr); /* Parameter Data Length */ |
3293 | put_unaligned_be64(lba, arr + 8); /* LBA */ | |
3294 | put_unaligned_be32(num, arr + 16); /* Number of blocks */ | |
3295 | arr[20] = !mapped; /* prov_stat=0: mapped; 1: dealloc */ | |
44d92694 | 3296 | |
c2248fc9 | 3297 | return fill_from_dev_buffer(scp, arr, SDEBUG_GET_LBA_STATUS_LEN); |
44d92694 MP |
3298 | } |
3299 | ||
fb0cc8d1 DG |
3300 | #define RL_BUCKET_ELEMS 8 |
3301 | ||
8d039e22 DG |
3302 | /* Even though each pseudo target has a REPORT LUNS "well known logical unit" |
3303 | * (W-LUN), the normal Linux scanning logic does not associate it with a | |
3304 | * device (e.g. /dev/sg7). The following magic will make that association: | |
3305 | * "cd /sys/class/scsi_host/host<n> ; echo '- - 49409' > scan" | |
3306 | * where <n> is a host number. If there are multiple targets in a host then | |
3307 | * the above will associate a W-LUN to each target. To only get a W-LUN | |
3308 | * for target 2, then use "echo '- 2 49409' > scan" . | |
3309 | */ | |
3310 | static int resp_report_luns(struct scsi_cmnd *scp, | |
3311 | struct sdebug_dev_info *devip) | |
1da177e4 | 3312 | { |
8d039e22 | 3313 | unsigned char *cmd = scp->cmnd; |
1da177e4 | 3314 | unsigned int alloc_len; |
8d039e22 | 3315 | unsigned char select_report; |
22017ed2 | 3316 | u64 lun; |
8d039e22 | 3317 | struct scsi_lun *lun_p; |
fb0cc8d1 | 3318 | u8 arr[RL_BUCKET_ELEMS * sizeof(struct scsi_lun)]; |
8d039e22 DG |
3319 | unsigned int lun_cnt; /* normal LUN count (max: 256) */ |
3320 | unsigned int wlun_cnt; /* report luns W-LUN count */ | |
3321 | unsigned int tlun_cnt; /* total LUN count */ | |
3322 | unsigned int rlen; /* response length (in bytes) */ | |
fb0cc8d1 DG |
3323 | int k, j, n, res; |
3324 | unsigned int off_rsp = 0; | |
3325 | const int sz_lun = sizeof(struct scsi_lun); | |
1da177e4 | 3326 | |
19c8ead7 | 3327 | clear_luns_changed_on_target(devip); |
8d039e22 DG |
3328 | |
3329 | select_report = cmd[2]; | |
3330 | alloc_len = get_unaligned_be32(cmd + 6); | |
3331 | ||
3332 | if (alloc_len < 4) { | |
3333 | pr_err("alloc len too small %d\n", alloc_len); | |
3334 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); | |
1da177e4 LT |
3335 | return check_condition_result; |
3336 | } | |
8d039e22 DG |
3337 | |
3338 | switch (select_report) { | |
3339 | case 0: /* all LUNs apart from W-LUNs */ | |
3340 | lun_cnt = sdebug_max_luns; | |
3341 | wlun_cnt = 0; | |
3342 | break; | |
3343 | case 1: /* only W-LUNs */ | |
c65b1445 | 3344 | lun_cnt = 0; |
8d039e22 DG |
3345 | wlun_cnt = 1; |
3346 | break; | |
3347 | case 2: /* all LUNs */ | |
3348 | lun_cnt = sdebug_max_luns; | |
3349 | wlun_cnt = 1; | |
3350 | break; | |
3351 | case 0x10: /* only administrative LUs */ | |
3352 | case 0x11: /* see SPC-5 */ | |
3353 | case 0x12: /* only subsiduary LUs owned by referenced LU */ | |
3354 | default: | |
3355 | pr_debug("select report invalid %d\n", select_report); | |
3356 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); | |
3357 | return check_condition_result; | |
3358 | } | |
3359 | ||
3360 | if (sdebug_no_lun_0 && (lun_cnt > 0)) | |
c65b1445 | 3361 | --lun_cnt; |
8d039e22 DG |
3362 | |
3363 | tlun_cnt = lun_cnt + wlun_cnt; | |
fb0cc8d1 DG |
3364 | rlen = tlun_cnt * sz_lun; /* excluding 8 byte header */ |
3365 | scsi_set_resid(scp, scsi_bufflen(scp)); | |
8d039e22 DG |
3366 | pr_debug("select_report %d luns = %d wluns = %d no_lun0 %d\n", |
3367 | select_report, lun_cnt, wlun_cnt, sdebug_no_lun_0); | |
3368 | ||
fb0cc8d1 | 3369 | /* loops rely on sizeof response header same as sizeof lun (both 8) */ |
8d039e22 | 3370 | lun = sdebug_no_lun_0 ? 1 : 0; |
fb0cc8d1 DG |
3371 | for (k = 0, j = 0, res = 0; true; ++k, j = 0) { |
3372 | memset(arr, 0, sizeof(arr)); | |
3373 | lun_p = (struct scsi_lun *)&arr[0]; | |
3374 | if (k == 0) { | |
3375 | put_unaligned_be32(rlen, &arr[0]); | |
3376 | ++lun_p; | |
3377 | j = 1; | |
3378 | } | |
3379 | for ( ; j < RL_BUCKET_ELEMS; ++j, ++lun_p) { | |
3380 | if ((k * RL_BUCKET_ELEMS) + j > lun_cnt) | |
3381 | break; | |
3382 | int_to_scsilun(lun++, lun_p); | |
3383 | } | |
3384 | if (j < RL_BUCKET_ELEMS) | |
3385 | break; | |
3386 | n = j * sz_lun; | |
3387 | res = p_fill_from_dev_buffer(scp, arr, n, off_rsp); | |
3388 | if (res) | |
3389 | return res; | |
3390 | off_rsp += n; | |
3391 | } | |
3392 | if (wlun_cnt) { | |
3393 | int_to_scsilun(SCSI_W_LUN_REPORT_LUNS, lun_p); | |
3394 | ++j; | |
3395 | } | |
3396 | if (j > 0) | |
3397 | res = p_fill_from_dev_buffer(scp, arr, j * sz_lun, off_rsp); | |
8d039e22 | 3398 | return res; |
1da177e4 LT |
3399 | } |
3400 | ||
c639d14e FT |
3401 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
3402 | unsigned int num, struct sdebug_dev_info *devip) | |
3403 | { | |
be4e11be | 3404 | int j; |
c639d14e FT |
3405 | unsigned char *kaddr, *buf; |
3406 | unsigned int offset; | |
c639d14e | 3407 | struct scsi_data_buffer *sdb = scsi_in(scp); |
be4e11be | 3408 | struct sg_mapping_iter miter; |
c639d14e FT |
3409 | |
3410 | /* better not to use temporary buffer. */ | |
b333a819 | 3411 | buf = kzalloc(scsi_bufflen(scp), GFP_ATOMIC); |
c5af0db9 | 3412 | if (!buf) { |
22017ed2 DG |
3413 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, |
3414 | INSUFF_RES_ASCQ); | |
c5af0db9 AM |
3415 | return check_condition_result; |
3416 | } | |
c639d14e | 3417 | |
21a61829 | 3418 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
c639d14e FT |
3419 | |
3420 | offset = 0; | |
be4e11be AM |
3421 | sg_miter_start(&miter, sdb->table.sgl, sdb->table.nents, |
3422 | SG_MITER_ATOMIC | SG_MITER_TO_SG); | |
c639d14e | 3423 | |
be4e11be AM |
3424 | while (sg_miter_next(&miter)) { |
3425 | kaddr = miter.addr; | |
3426 | for (j = 0; j < miter.length; j++) | |
3427 | *(kaddr + j) ^= *(buf + offset + j); | |
c639d14e | 3428 | |
be4e11be | 3429 | offset += miter.length; |
c639d14e | 3430 | } |
be4e11be | 3431 | sg_miter_stop(&miter); |
c639d14e FT |
3432 | kfree(buf); |
3433 | ||
be4e11be | 3434 | return 0; |
c639d14e FT |
3435 | } |
3436 | ||
fd32119b DG |
3437 | static int resp_xdwriteread_10(struct scsi_cmnd *scp, |
3438 | struct sdebug_dev_info *devip) | |
c2248fc9 DG |
3439 | { |
3440 | u8 *cmd = scp->cmnd; | |
3441 | u64 lba; | |
3442 | u32 num; | |
3443 | int errsts; | |
3444 | ||
3445 | if (!scsi_bidi_cmnd(scp)) { | |
3446 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
3447 | INSUFF_RES_ASCQ); | |
3448 | return check_condition_result; | |
3449 | } | |
3450 | errsts = resp_read_dt0(scp, devip); | |
3451 | if (errsts) | |
3452 | return errsts; | |
3453 | if (!(cmd[1] & 0x4)) { /* DISABLE_WRITE is not set */ | |
3454 | errsts = resp_write_dt0(scp, devip); | |
3455 | if (errsts) | |
3456 | return errsts; | |
3457 | } | |
3458 | lba = get_unaligned_be32(cmd + 2); | |
3459 | num = get_unaligned_be16(cmd + 7); | |
3460 | return resp_xdwriteread(scp, lba, num, devip); | |
3461 | } | |
3462 | ||
c4837394 DG |
3463 | static struct sdebug_queue *get_queue(struct scsi_cmnd *cmnd) |
3464 | { | |
3465 | struct sdebug_queue *sqp = sdebug_q_arr; | |
3466 | ||
3467 | if (sdebug_mq_active) { | |
3468 | u32 tag = blk_mq_unique_tag(cmnd->request); | |
3469 | u16 hwq = blk_mq_unique_tag_to_hwq(tag); | |
3470 | ||
3471 | if (unlikely(hwq >= submit_queues)) { | |
3472 | pr_warn("Unexpected hwq=%d, apply modulo\n", hwq); | |
3473 | hwq %= submit_queues; | |
3474 | } | |
3475 | pr_debug("tag=%u, hwq=%d\n", tag, hwq); | |
3476 | return sqp + hwq; | |
3477 | } else | |
3478 | return sqp; | |
3479 | } | |
3480 | ||
3481 | /* Queued (deferred) command completions converge here. */ | |
fd32119b | 3482 | static void sdebug_q_cmd_complete(struct sdebug_defer *sd_dp) |
1da177e4 | 3483 | { |
c4837394 | 3484 | int qc_idx; |
cbf67842 | 3485 | int retiring = 0; |
1da177e4 | 3486 | unsigned long iflags; |
c4837394 | 3487 | struct sdebug_queue *sqp; |
cbf67842 DG |
3488 | struct sdebug_queued_cmd *sqcp; |
3489 | struct scsi_cmnd *scp; | |
3490 | struct sdebug_dev_info *devip; | |
1da177e4 | 3491 | |
c4837394 DG |
3492 | qc_idx = sd_dp->qc_idx; |
3493 | sqp = sdebug_q_arr + sd_dp->sqa_idx; | |
3494 | if (sdebug_statistics) { | |
3495 | atomic_inc(&sdebug_completions); | |
3496 | if (raw_smp_processor_id() != sd_dp->issuing_cpu) | |
3497 | atomic_inc(&sdebug_miss_cpus); | |
3498 | } | |
3499 | if (unlikely((qc_idx < 0) || (qc_idx >= SDEBUG_CANQUEUE))) { | |
3500 | pr_err("wild qc_idx=%d\n", qc_idx); | |
1da177e4 LT |
3501 | return; |
3502 | } | |
c4837394 DG |
3503 | spin_lock_irqsave(&sqp->qc_lock, iflags); |
3504 | sqcp = &sqp->qc_arr[qc_idx]; | |
cbf67842 | 3505 | scp = sqcp->a_cmnd; |
b01f6f83 | 3506 | if (unlikely(scp == NULL)) { |
c4837394 DG |
3507 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
3508 | pr_err("scp is NULL, sqa_idx=%d, qc_idx=%d\n", | |
3509 | sd_dp->sqa_idx, qc_idx); | |
cbf67842 DG |
3510 | return; |
3511 | } | |
3512 | devip = (struct sdebug_dev_info *)scp->device->hostdata; | |
f46eb0e9 | 3513 | if (likely(devip)) |
cbf67842 DG |
3514 | atomic_dec(&devip->num_in_q); |
3515 | else | |
c1287970 | 3516 | pr_err("devip=NULL\n"); |
f46eb0e9 | 3517 | if (unlikely(atomic_read(&retired_max_queue) > 0)) |
cbf67842 DG |
3518 | retiring = 1; |
3519 | ||
3520 | sqcp->a_cmnd = NULL; | |
c4837394 DG |
3521 | if (unlikely(!test_and_clear_bit(qc_idx, sqp->in_use_bm))) { |
3522 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); | |
c1287970 | 3523 | pr_err("Unexpected completion\n"); |
1da177e4 LT |
3524 | return; |
3525 | } | |
cbf67842 DG |
3526 | |
3527 | if (unlikely(retiring)) { /* user has reduced max_queue */ | |
3528 | int k, retval; | |
3529 | ||
3530 | retval = atomic_read(&retired_max_queue); | |
c4837394 DG |
3531 | if (qc_idx >= retval) { |
3532 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); | |
c1287970 | 3533 | pr_err("index %d too large\n", retval); |
cbf67842 DG |
3534 | return; |
3535 | } | |
c4837394 | 3536 | k = find_last_bit(sqp->in_use_bm, retval); |
773642d9 | 3537 | if ((k < sdebug_max_queue) || (k == retval)) |
cbf67842 DG |
3538 | atomic_set(&retired_max_queue, 0); |
3539 | else | |
3540 | atomic_set(&retired_max_queue, k + 1); | |
1da177e4 | 3541 | } |
c4837394 | 3542 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
cbf67842 | 3543 | scp->scsi_done(scp); /* callback to mid level */ |
1da177e4 LT |
3544 | } |
3545 | ||
cbf67842 | 3546 | /* When high resolution timer goes off this function is called. */ |
fd32119b | 3547 | static enum hrtimer_restart sdebug_q_cmd_hrt_complete(struct hrtimer *timer) |
cbf67842 | 3548 | { |
a10bc12a DG |
3549 | struct sdebug_defer *sd_dp = container_of(timer, struct sdebug_defer, |
3550 | hrt); | |
3551 | sdebug_q_cmd_complete(sd_dp); | |
cbf67842 DG |
3552 | return HRTIMER_NORESTART; |
3553 | } | |
1da177e4 | 3554 | |
a10bc12a | 3555 | /* When work queue schedules work, it calls this function. */ |
fd32119b | 3556 | static void sdebug_q_cmd_wq_complete(struct work_struct *work) |
a10bc12a DG |
3557 | { |
3558 | struct sdebug_defer *sd_dp = container_of(work, struct sdebug_defer, | |
3559 | ew.work); | |
3560 | sdebug_q_cmd_complete(sd_dp); | |
3561 | } | |
3562 | ||
09ba24c1 DG |
3563 | static bool got_shared_uuid; |
3564 | static uuid_be shared_uuid; | |
3565 | ||
fd32119b DG |
3566 | static struct sdebug_dev_info *sdebug_device_create( |
3567 | struct sdebug_host_info *sdbg_host, gfp_t flags) | |
5cb2fc06 FT |
3568 | { |
3569 | struct sdebug_dev_info *devip; | |
3570 | ||
3571 | devip = kzalloc(sizeof(*devip), flags); | |
3572 | if (devip) { | |
09ba24c1 DG |
3573 | if (sdebug_uuid_ctl == 1) |
3574 | uuid_be_gen(&devip->lu_name); | |
3575 | else if (sdebug_uuid_ctl == 2) { | |
3576 | if (got_shared_uuid) | |
3577 | devip->lu_name = shared_uuid; | |
3578 | else { | |
3579 | uuid_be_gen(&shared_uuid); | |
3580 | got_shared_uuid = true; | |
3581 | devip->lu_name = shared_uuid; | |
3582 | } | |
3583 | } | |
5cb2fc06 FT |
3584 | devip->sdbg_host = sdbg_host; |
3585 | list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); | |
3586 | } | |
3587 | return devip; | |
3588 | } | |
3589 | ||
f46eb0e9 | 3590 | static struct sdebug_dev_info *find_build_dev_info(struct scsi_device *sdev) |
1da177e4 | 3591 | { |
f46eb0e9 DG |
3592 | struct sdebug_host_info *sdbg_host; |
3593 | struct sdebug_dev_info *open_devip = NULL; | |
3594 | struct sdebug_dev_info *devip; | |
1da177e4 | 3595 | |
d1e4c9c5 FT |
3596 | sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
3597 | if (!sdbg_host) { | |
c1287970 | 3598 | pr_err("Host info NULL\n"); |
1da177e4 LT |
3599 | return NULL; |
3600 | } | |
3601 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { | |
3602 | if ((devip->used) && (devip->channel == sdev->channel) && | |
3603 | (devip->target == sdev->id) && | |
3604 | (devip->lun == sdev->lun)) | |
3605 | return devip; | |
3606 | else { | |
3607 | if ((!devip->used) && (!open_devip)) | |
3608 | open_devip = devip; | |
3609 | } | |
3610 | } | |
5cb2fc06 FT |
3611 | if (!open_devip) { /* try and make a new one */ |
3612 | open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); | |
3613 | if (!open_devip) { | |
c1287970 | 3614 | pr_err("out of memory at line %d\n", __LINE__); |
1da177e4 LT |
3615 | return NULL; |
3616 | } | |
1da177e4 | 3617 | } |
a75869d1 FT |
3618 | |
3619 | open_devip->channel = sdev->channel; | |
3620 | open_devip->target = sdev->id; | |
3621 | open_devip->lun = sdev->lun; | |
3622 | open_devip->sdbg_host = sdbg_host; | |
cbf67842 DG |
3623 | atomic_set(&open_devip->num_in_q, 0); |
3624 | set_bit(SDEBUG_UA_POR, open_devip->uas_bm); | |
c2248fc9 | 3625 | open_devip->used = true; |
a75869d1 | 3626 | return open_devip; |
1da177e4 LT |
3627 | } |
3628 | ||
8dea0d02 | 3629 | static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
1da177e4 | 3630 | { |
773642d9 | 3631 | if (sdebug_verbose) |
c1287970 | 3632 | pr_info("slave_alloc <%u %u %u %llu>\n", |
8dea0d02 | 3633 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
75ad23bc | 3634 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); |
8dea0d02 FT |
3635 | return 0; |
3636 | } | |
1da177e4 | 3637 | |
8dea0d02 FT |
3638 | static int scsi_debug_slave_configure(struct scsi_device *sdp) |
3639 | { | |
f46eb0e9 DG |
3640 | struct sdebug_dev_info *devip = |
3641 | (struct sdebug_dev_info *)sdp->hostdata; | |
a34c4e98 | 3642 | |
773642d9 | 3643 | if (sdebug_verbose) |
c1287970 | 3644 | pr_info("slave_configure <%u %u %u %llu>\n", |
8dea0d02 | 3645 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
b01f6f83 DG |
3646 | if (sdp->host->max_cmd_len != SDEBUG_MAX_CMD_LEN) |
3647 | sdp->host->max_cmd_len = SDEBUG_MAX_CMD_LEN; | |
3648 | if (devip == NULL) { | |
f46eb0e9 | 3649 | devip = find_build_dev_info(sdp); |
b01f6f83 | 3650 | if (devip == NULL) |
f46eb0e9 DG |
3651 | return 1; /* no resources, will be marked offline */ |
3652 | } | |
c8b09f6f | 3653 | sdp->hostdata = devip; |
6bb5e6e7 | 3654 | blk_queue_max_segment_size(sdp->request_queue, -1U); |
773642d9 | 3655 | if (sdebug_no_uld) |
78d4e5a0 | 3656 | sdp->no_uld_attach = 1; |
8dea0d02 FT |
3657 | return 0; |
3658 | } | |
3659 | ||
3660 | static void scsi_debug_slave_destroy(struct scsi_device *sdp) | |
3661 | { | |
3662 | struct sdebug_dev_info *devip = | |
3663 | (struct sdebug_dev_info *)sdp->hostdata; | |
a34c4e98 | 3664 | |
773642d9 | 3665 | if (sdebug_verbose) |
c1287970 | 3666 | pr_info("slave_destroy <%u %u %u %llu>\n", |
8dea0d02 FT |
3667 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
3668 | if (devip) { | |
25985edc | 3669 | /* make this slot available for re-use */ |
c2248fc9 | 3670 | devip->used = false; |
8dea0d02 FT |
3671 | sdp->hostdata = NULL; |
3672 | } | |
3673 | } | |
3674 | ||
c4837394 DG |
3675 | static void stop_qc_helper(struct sdebug_defer *sd_dp) |
3676 | { | |
3677 | if (!sd_dp) | |
3678 | return; | |
3679 | if ((sdebug_jdelay > 0) || (sdebug_ndelay > 0)) | |
3680 | hrtimer_cancel(&sd_dp->hrt); | |
3681 | else if (sdebug_jdelay < 0) | |
3682 | cancel_work_sync(&sd_dp->ew.work); | |
3683 | } | |
3684 | ||
a10bc12a DG |
3685 | /* If @cmnd found deletes its timer or work queue and returns true; else |
3686 | returns false */ | |
3687 | static bool stop_queued_cmnd(struct scsi_cmnd *cmnd) | |
8dea0d02 FT |
3688 | { |
3689 | unsigned long iflags; | |
c4837394 DG |
3690 | int j, k, qmax, r_qmax; |
3691 | struct sdebug_queue *sqp; | |
8dea0d02 | 3692 | struct sdebug_queued_cmd *sqcp; |
cbf67842 | 3693 | struct sdebug_dev_info *devip; |
a10bc12a | 3694 | struct sdebug_defer *sd_dp; |
8dea0d02 | 3695 | |
c4837394 DG |
3696 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) { |
3697 | spin_lock_irqsave(&sqp->qc_lock, iflags); | |
3698 | qmax = sdebug_max_queue; | |
3699 | r_qmax = atomic_read(&retired_max_queue); | |
3700 | if (r_qmax > qmax) | |
3701 | qmax = r_qmax; | |
3702 | for (k = 0; k < qmax; ++k) { | |
3703 | if (test_bit(k, sqp->in_use_bm)) { | |
3704 | sqcp = &sqp->qc_arr[k]; | |
3705 | if (cmnd != sqcp->a_cmnd) | |
3706 | continue; | |
3707 | /* found */ | |
3708 | devip = (struct sdebug_dev_info *) | |
3709 | cmnd->device->hostdata; | |
3710 | if (devip) | |
3711 | atomic_dec(&devip->num_in_q); | |
3712 | sqcp->a_cmnd = NULL; | |
3713 | sd_dp = sqcp->sd_dp; | |
3714 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); | |
3715 | stop_qc_helper(sd_dp); | |
3716 | clear_bit(k, sqp->in_use_bm); | |
3717 | return true; | |
cbf67842 | 3718 | } |
8dea0d02 | 3719 | } |
c4837394 | 3720 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
8dea0d02 | 3721 | } |
a10bc12a | 3722 | return false; |
8dea0d02 FT |
3723 | } |
3724 | ||
a10bc12a | 3725 | /* Deletes (stops) timers or work queues of all queued commands */ |
8dea0d02 FT |
3726 | static void stop_all_queued(void) |
3727 | { | |
3728 | unsigned long iflags; | |
c4837394 DG |
3729 | int j, k; |
3730 | struct sdebug_queue *sqp; | |
8dea0d02 | 3731 | struct sdebug_queued_cmd *sqcp; |
cbf67842 | 3732 | struct sdebug_dev_info *devip; |
a10bc12a | 3733 | struct sdebug_defer *sd_dp; |
8dea0d02 | 3734 | |
c4837394 DG |
3735 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) { |
3736 | spin_lock_irqsave(&sqp->qc_lock, iflags); | |
3737 | for (k = 0; k < SDEBUG_CANQUEUE; ++k) { | |
3738 | if (test_bit(k, sqp->in_use_bm)) { | |
3739 | sqcp = &sqp->qc_arr[k]; | |
3740 | if (sqcp->a_cmnd == NULL) | |
3741 | continue; | |
3742 | devip = (struct sdebug_dev_info *) | |
3743 | sqcp->a_cmnd->device->hostdata; | |
3744 | if (devip) | |
3745 | atomic_dec(&devip->num_in_q); | |
3746 | sqcp->a_cmnd = NULL; | |
3747 | sd_dp = sqcp->sd_dp; | |
3748 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); | |
3749 | stop_qc_helper(sd_dp); | |
3750 | clear_bit(k, sqp->in_use_bm); | |
3751 | spin_lock_irqsave(&sqp->qc_lock, iflags); | |
cbf67842 | 3752 | } |
8dea0d02 | 3753 | } |
c4837394 | 3754 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
8dea0d02 | 3755 | } |
1da177e4 LT |
3756 | } |
3757 | ||
cbf67842 DG |
3758 | /* Free queued command memory on heap */ |
3759 | static void free_all_queued(void) | |
1da177e4 | 3760 | { |
c4837394 DG |
3761 | int j, k; |
3762 | struct sdebug_queue *sqp; | |
cbf67842 DG |
3763 | struct sdebug_queued_cmd *sqcp; |
3764 | ||
c4837394 DG |
3765 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) { |
3766 | for (k = 0; k < SDEBUG_CANQUEUE; ++k) { | |
3767 | sqcp = &sqp->qc_arr[k]; | |
3768 | kfree(sqcp->sd_dp); | |
3769 | sqcp->sd_dp = NULL; | |
3770 | } | |
cbf67842 | 3771 | } |
1da177e4 LT |
3772 | } |
3773 | ||
cbf67842 | 3774 | static int scsi_debug_abort(struct scsi_cmnd *SCpnt) |
1da177e4 | 3775 | { |
a10bc12a DG |
3776 | bool ok; |
3777 | ||
cbf67842 DG |
3778 | ++num_aborts; |
3779 | if (SCpnt) { | |
a10bc12a DG |
3780 | ok = stop_queued_cmnd(SCpnt); |
3781 | if (SCpnt->device && (SDEBUG_OPT_ALL_NOISE & sdebug_opts)) | |
3782 | sdev_printk(KERN_INFO, SCpnt->device, | |
3783 | "%s: command%s found\n", __func__, | |
3784 | ok ? "" : " not"); | |
cbf67842 DG |
3785 | } |
3786 | return SUCCESS; | |
1da177e4 LT |
3787 | } |
3788 | ||
3789 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) | |
3790 | { | |
1da177e4 | 3791 | ++num_dev_resets; |
cbf67842 DG |
3792 | if (SCpnt && SCpnt->device) { |
3793 | struct scsi_device *sdp = SCpnt->device; | |
f46eb0e9 DG |
3794 | struct sdebug_dev_info *devip = |
3795 | (struct sdebug_dev_info *)sdp->hostdata; | |
cbf67842 | 3796 | |
773642d9 | 3797 | if (SDEBUG_OPT_ALL_NOISE & sdebug_opts) |
cbf67842 | 3798 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); |
1da177e4 | 3799 | if (devip) |
cbf67842 DG |
3800 | set_bit(SDEBUG_UA_POR, devip->uas_bm); |
3801 | } | |
3802 | return SUCCESS; | |
3803 | } | |
3804 | ||
3805 | static int scsi_debug_target_reset(struct scsi_cmnd *SCpnt) | |
3806 | { | |
3807 | struct sdebug_host_info *sdbg_host; | |
3808 | struct sdebug_dev_info *devip; | |
3809 | struct scsi_device *sdp; | |
3810 | struct Scsi_Host *hp; | |
3811 | int k = 0; | |
3812 | ||
3813 | ++num_target_resets; | |
3814 | if (!SCpnt) | |
3815 | goto lie; | |
3816 | sdp = SCpnt->device; | |
3817 | if (!sdp) | |
3818 | goto lie; | |
773642d9 | 3819 | if (SDEBUG_OPT_ALL_NOISE & sdebug_opts) |
cbf67842 DG |
3820 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); |
3821 | hp = sdp->host; | |
3822 | if (!hp) | |
3823 | goto lie; | |
3824 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); | |
3825 | if (sdbg_host) { | |
3826 | list_for_each_entry(devip, | |
3827 | &sdbg_host->dev_info_list, | |
3828 | dev_list) | |
3829 | if (devip->target == sdp->id) { | |
3830 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
3831 | ++k; | |
3832 | } | |
1da177e4 | 3833 | } |
773642d9 | 3834 | if (SDEBUG_OPT_RESET_NOISE & sdebug_opts) |
cbf67842 DG |
3835 | sdev_printk(KERN_INFO, sdp, |
3836 | "%s: %d device(s) found in target\n", __func__, k); | |
3837 | lie: | |
1da177e4 LT |
3838 | return SUCCESS; |
3839 | } | |
3840 | ||
3841 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) | |
3842 | { | |
3843 | struct sdebug_host_info *sdbg_host; | |
cbf67842 | 3844 | struct sdebug_dev_info *devip; |
1da177e4 LT |
3845 | struct scsi_device * sdp; |
3846 | struct Scsi_Host * hp; | |
cbf67842 | 3847 | int k = 0; |
1da177e4 | 3848 | |
1da177e4 | 3849 | ++num_bus_resets; |
cbf67842 DG |
3850 | if (!(SCpnt && SCpnt->device)) |
3851 | goto lie; | |
3852 | sdp = SCpnt->device; | |
773642d9 | 3853 | if (SDEBUG_OPT_ALL_NOISE & sdebug_opts) |
cbf67842 DG |
3854 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); |
3855 | hp = sdp->host; | |
3856 | if (hp) { | |
d1e4c9c5 | 3857 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
1da177e4 | 3858 | if (sdbg_host) { |
cbf67842 | 3859 | list_for_each_entry(devip, |
1da177e4 | 3860 | &sdbg_host->dev_info_list, |
cbf67842 DG |
3861 | dev_list) { |
3862 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
3863 | ++k; | |
3864 | } | |
1da177e4 LT |
3865 | } |
3866 | } | |
773642d9 | 3867 | if (SDEBUG_OPT_RESET_NOISE & sdebug_opts) |
cbf67842 DG |
3868 | sdev_printk(KERN_INFO, sdp, |
3869 | "%s: %d device(s) found in host\n", __func__, k); | |
3870 | lie: | |
1da177e4 LT |
3871 | return SUCCESS; |
3872 | } | |
3873 | ||
3874 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) | |
3875 | { | |
3876 | struct sdebug_host_info * sdbg_host; | |
cbf67842 DG |
3877 | struct sdebug_dev_info *devip; |
3878 | int k = 0; | |
1da177e4 | 3879 | |
1da177e4 | 3880 | ++num_host_resets; |
773642d9 | 3881 | if ((SCpnt->device) && (SDEBUG_OPT_ALL_NOISE & sdebug_opts)) |
cbf67842 | 3882 | sdev_printk(KERN_INFO, SCpnt->device, "%s\n", __func__); |
1da177e4 LT |
3883 | spin_lock(&sdebug_host_list_lock); |
3884 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
cbf67842 DG |
3885 | list_for_each_entry(devip, &sdbg_host->dev_info_list, |
3886 | dev_list) { | |
3887 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
3888 | ++k; | |
3889 | } | |
1da177e4 LT |
3890 | } |
3891 | spin_unlock(&sdebug_host_list_lock); | |
3892 | stop_all_queued(); | |
773642d9 | 3893 | if (SDEBUG_OPT_RESET_NOISE & sdebug_opts) |
cbf67842 DG |
3894 | sdev_printk(KERN_INFO, SCpnt->device, |
3895 | "%s: %d device(s) found\n", __func__, k); | |
1da177e4 LT |
3896 | return SUCCESS; |
3897 | } | |
3898 | ||
f58b0efb | 3899 | static void __init sdebug_build_parts(unsigned char *ramp, |
5f2578e5 | 3900 | unsigned long store_size) |
1da177e4 LT |
3901 | { |
3902 | struct partition * pp; | |
3903 | int starts[SDEBUG_MAX_PARTS + 2]; | |
3904 | int sectors_per_part, num_sectors, k; | |
3905 | int heads_by_sects, start_sec, end_sec; | |
3906 | ||
3907 | /* assume partition table already zeroed */ | |
773642d9 | 3908 | if ((sdebug_num_parts < 1) || (store_size < 1048576)) |
1da177e4 | 3909 | return; |
773642d9 DG |
3910 | if (sdebug_num_parts > SDEBUG_MAX_PARTS) { |
3911 | sdebug_num_parts = SDEBUG_MAX_PARTS; | |
c1287970 | 3912 | pr_warn("reducing partitions to %d\n", SDEBUG_MAX_PARTS); |
1da177e4 | 3913 | } |
c65b1445 | 3914 | num_sectors = (int)sdebug_store_sectors; |
1da177e4 | 3915 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
773642d9 | 3916 | / sdebug_num_parts; |
1da177e4 LT |
3917 | heads_by_sects = sdebug_heads * sdebug_sectors_per; |
3918 | starts[0] = sdebug_sectors_per; | |
773642d9 | 3919 | for (k = 1; k < sdebug_num_parts; ++k) |
1da177e4 LT |
3920 | starts[k] = ((k * sectors_per_part) / heads_by_sects) |
3921 | * heads_by_sects; | |
773642d9 DG |
3922 | starts[sdebug_num_parts] = num_sectors; |
3923 | starts[sdebug_num_parts + 1] = 0; | |
1da177e4 LT |
3924 | |
3925 | ramp[510] = 0x55; /* magic partition markings */ | |
3926 | ramp[511] = 0xAA; | |
3927 | pp = (struct partition *)(ramp + 0x1be); | |
3928 | for (k = 0; starts[k + 1]; ++k, ++pp) { | |
3929 | start_sec = starts[k]; | |
3930 | end_sec = starts[k + 1] - 1; | |
3931 | pp->boot_ind = 0; | |
3932 | ||
3933 | pp->cyl = start_sec / heads_by_sects; | |
3934 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) | |
3935 | / sdebug_sectors_per; | |
3936 | pp->sector = (start_sec % sdebug_sectors_per) + 1; | |
3937 | ||
3938 | pp->end_cyl = end_sec / heads_by_sects; | |
3939 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) | |
3940 | / sdebug_sectors_per; | |
3941 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; | |
3942 | ||
150c3544 AM |
3943 | pp->start_sect = cpu_to_le32(start_sec); |
3944 | pp->nr_sects = cpu_to_le32(end_sec - start_sec + 1); | |
1da177e4 LT |
3945 | pp->sys_ind = 0x83; /* plain Linux partition */ |
3946 | } | |
3947 | } | |
3948 | ||
c4837394 DG |
3949 | static void block_unblock_all_queues(bool block) |
3950 | { | |
3951 | int j; | |
3952 | struct sdebug_queue *sqp; | |
3953 | ||
3954 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) | |
3955 | atomic_set(&sqp->blocked, (int)block); | |
3956 | } | |
3957 | ||
3958 | /* Adjust (by rounding down) the sdebug_cmnd_count so abs(every_nth)-1 | |
3959 | * commands will be processed normally before triggers occur. | |
3960 | */ | |
3961 | static void tweak_cmnd_count(void) | |
3962 | { | |
3963 | int count, modulo; | |
3964 | ||
3965 | modulo = abs(sdebug_every_nth); | |
3966 | if (modulo < 2) | |
3967 | return; | |
3968 | block_unblock_all_queues(true); | |
3969 | count = atomic_read(&sdebug_cmnd_count); | |
3970 | atomic_set(&sdebug_cmnd_count, (count / modulo) * modulo); | |
3971 | block_unblock_all_queues(false); | |
3972 | } | |
3973 | ||
3974 | static void clear_queue_stats(void) | |
3975 | { | |
3976 | atomic_set(&sdebug_cmnd_count, 0); | |
3977 | atomic_set(&sdebug_completions, 0); | |
3978 | atomic_set(&sdebug_miss_cpus, 0); | |
3979 | atomic_set(&sdebug_a_tsf, 0); | |
3980 | } | |
3981 | ||
3982 | static void setup_inject(struct sdebug_queue *sqp, | |
3983 | struct sdebug_queued_cmd *sqcp) | |
3984 | { | |
3985 | if ((atomic_read(&sdebug_cmnd_count) % abs(sdebug_every_nth)) > 0) | |
3986 | return; | |
3987 | sqcp->inj_recovered = !!(SDEBUG_OPT_RECOVERED_ERR & sdebug_opts); | |
3988 | sqcp->inj_transport = !!(SDEBUG_OPT_TRANSPORT_ERR & sdebug_opts); | |
3989 | sqcp->inj_dif = !!(SDEBUG_OPT_DIF_ERR & sdebug_opts); | |
3990 | sqcp->inj_dix = !!(SDEBUG_OPT_DIX_ERR & sdebug_opts); | |
3991 | sqcp->inj_short = !!(SDEBUG_OPT_SHORT_TRANSFER & sdebug_opts); | |
3992 | } | |
3993 | ||
3994 | /* Complete the processing of the thread that queued a SCSI command to this | |
3995 | * driver. It either completes the command by calling cmnd_done() or | |
3996 | * schedules a hr timer or work queue then returns 0. Returns | |
3997 | * SCSI_MLQUEUE_HOST_BUSY if temporarily out of resources. | |
3998 | */ | |
fd32119b DG |
3999 | static int schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip, |
4000 | int scsi_result, int delta_jiff) | |
1da177e4 | 4001 | { |
cbf67842 | 4002 | unsigned long iflags; |
cd62b7da | 4003 | int k, num_in_q, qdepth, inject; |
c4837394 DG |
4004 | struct sdebug_queue *sqp; |
4005 | struct sdebug_queued_cmd *sqcp; | |
299b6c07 | 4006 | struct scsi_device *sdp; |
a10bc12a | 4007 | struct sdebug_defer *sd_dp; |
299b6c07 | 4008 | |
b01f6f83 DG |
4009 | if (unlikely(devip == NULL)) { |
4010 | if (scsi_result == 0) | |
f46eb0e9 DG |
4011 | scsi_result = DID_NO_CONNECT << 16; |
4012 | goto respond_in_thread; | |
cbf67842 | 4013 | } |
299b6c07 TW |
4014 | sdp = cmnd->device; |
4015 | ||
f46eb0e9 | 4016 | if (unlikely(sdebug_verbose && scsi_result)) |
cbf67842 DG |
4017 | sdev_printk(KERN_INFO, sdp, "%s: non-zero result=0x%x\n", |
4018 | __func__, scsi_result); | |
cd62b7da DG |
4019 | if (delta_jiff == 0) |
4020 | goto respond_in_thread; | |
1da177e4 | 4021 | |
cd62b7da | 4022 | /* schedule the response at a later time if resources permit */ |
c4837394 DG |
4023 | sqp = get_queue(cmnd); |
4024 | spin_lock_irqsave(&sqp->qc_lock, iflags); | |
4025 | if (unlikely(atomic_read(&sqp->blocked))) { | |
4026 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); | |
4027 | return SCSI_MLQUEUE_HOST_BUSY; | |
4028 | } | |
cbf67842 DG |
4029 | num_in_q = atomic_read(&devip->num_in_q); |
4030 | qdepth = cmnd->device->queue_depth; | |
cbf67842 | 4031 | inject = 0; |
f46eb0e9 | 4032 | if (unlikely((qdepth > 0) && (num_in_q >= qdepth))) { |
cd62b7da | 4033 | if (scsi_result) { |
c4837394 | 4034 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
cd62b7da DG |
4035 | goto respond_in_thread; |
4036 | } else | |
4037 | scsi_result = device_qfull_result; | |
c4837394 | 4038 | } else if (unlikely(sdebug_every_nth && |
f46eb0e9 DG |
4039 | (SDEBUG_OPT_RARE_TSF & sdebug_opts) && |
4040 | (scsi_result == 0))) { | |
cbf67842 DG |
4041 | if ((num_in_q == (qdepth - 1)) && |
4042 | (atomic_inc_return(&sdebug_a_tsf) >= | |
773642d9 | 4043 | abs(sdebug_every_nth))) { |
cbf67842 DG |
4044 | atomic_set(&sdebug_a_tsf, 0); |
4045 | inject = 1; | |
cd62b7da | 4046 | scsi_result = device_qfull_result; |
1da177e4 LT |
4047 | } |
4048 | } | |
1da177e4 | 4049 | |
c4837394 | 4050 | k = find_first_zero_bit(sqp->in_use_bm, sdebug_max_queue); |
f46eb0e9 | 4051 | if (unlikely(k >= sdebug_max_queue)) { |
c4837394 | 4052 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
cd62b7da DG |
4053 | if (scsi_result) |
4054 | goto respond_in_thread; | |
773642d9 | 4055 | else if (SDEBUG_OPT_ALL_TSF & sdebug_opts) |
cd62b7da | 4056 | scsi_result = device_qfull_result; |
773642d9 | 4057 | if (SDEBUG_OPT_Q_NOISE & sdebug_opts) |
cbf67842 | 4058 | sdev_printk(KERN_INFO, sdp, |
cd62b7da | 4059 | "%s: max_queue=%d exceeded, %s\n", |
773642d9 | 4060 | __func__, sdebug_max_queue, |
cd62b7da DG |
4061 | (scsi_result ? "status: TASK SET FULL" : |
4062 | "report: host busy")); | |
4063 | if (scsi_result) | |
4064 | goto respond_in_thread; | |
4065 | else | |
cbf67842 DG |
4066 | return SCSI_MLQUEUE_HOST_BUSY; |
4067 | } | |
c4837394 | 4068 | __set_bit(k, sqp->in_use_bm); |
cbf67842 | 4069 | atomic_inc(&devip->num_in_q); |
c4837394 | 4070 | sqcp = &sqp->qc_arr[k]; |
cbf67842 | 4071 | sqcp->a_cmnd = cmnd; |
c4837394 | 4072 | cmnd->host_scribble = (unsigned char *)sqcp; |
cbf67842 | 4073 | cmnd->result = scsi_result; |
a10bc12a | 4074 | sd_dp = sqcp->sd_dp; |
c4837394 DG |
4075 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
4076 | if (unlikely(sdebug_every_nth && sdebug_any_injecting_opt)) | |
4077 | setup_inject(sqp, sqcp); | |
b01f6f83 | 4078 | if (delta_jiff > 0 || sdebug_ndelay > 0) { |
b333a819 | 4079 | ktime_t kt; |
cbf67842 | 4080 | |
b333a819 DG |
4081 | if (delta_jiff > 0) { |
4082 | struct timespec ts; | |
4083 | ||
4084 | jiffies_to_timespec(delta_jiff, &ts); | |
4085 | kt = ktime_set(ts.tv_sec, ts.tv_nsec); | |
4086 | } else | |
4087 | kt = ktime_set(0, sdebug_ndelay); | |
a10bc12a DG |
4088 | if (NULL == sd_dp) { |
4089 | sd_dp = kzalloc(sizeof(*sd_dp), GFP_ATOMIC); | |
4090 | if (NULL == sd_dp) | |
cbf67842 | 4091 | return SCSI_MLQUEUE_HOST_BUSY; |
a10bc12a DG |
4092 | sqcp->sd_dp = sd_dp; |
4093 | hrtimer_init(&sd_dp->hrt, CLOCK_MONOTONIC, | |
c4837394 | 4094 | HRTIMER_MODE_REL_PINNED); |
a10bc12a | 4095 | sd_dp->hrt.function = sdebug_q_cmd_hrt_complete; |
c4837394 DG |
4096 | sd_dp->sqa_idx = sqp - sdebug_q_arr; |
4097 | sd_dp->qc_idx = k; | |
1da177e4 | 4098 | } |
c4837394 DG |
4099 | if (sdebug_statistics) |
4100 | sd_dp->issuing_cpu = raw_smp_processor_id(); | |
4101 | hrtimer_start(&sd_dp->hrt, kt, HRTIMER_MODE_REL_PINNED); | |
4102 | } else { /* jdelay < 0, use work queue */ | |
a10bc12a DG |
4103 | if (NULL == sd_dp) { |
4104 | sd_dp = kzalloc(sizeof(*sqcp->sd_dp), GFP_ATOMIC); | |
4105 | if (NULL == sd_dp) | |
cbf67842 | 4106 | return SCSI_MLQUEUE_HOST_BUSY; |
a10bc12a | 4107 | sqcp->sd_dp = sd_dp; |
c4837394 DG |
4108 | sd_dp->sqa_idx = sqp - sdebug_q_arr; |
4109 | sd_dp->qc_idx = k; | |
a10bc12a | 4110 | INIT_WORK(&sd_dp->ew.work, sdebug_q_cmd_wq_complete); |
cbf67842 | 4111 | } |
c4837394 DG |
4112 | if (sdebug_statistics) |
4113 | sd_dp->issuing_cpu = raw_smp_processor_id(); | |
a10bc12a | 4114 | schedule_work(&sd_dp->ew.work); |
1da177e4 | 4115 | } |
f46eb0e9 DG |
4116 | if (unlikely((SDEBUG_OPT_Q_NOISE & sdebug_opts) && |
4117 | (scsi_result == device_qfull_result))) | |
cbf67842 DG |
4118 | sdev_printk(KERN_INFO, sdp, |
4119 | "%s: num_in_q=%d +1, %s%s\n", __func__, | |
4120 | num_in_q, (inject ? "<inject> " : ""), | |
4121 | "status: TASK SET FULL"); | |
4122 | return 0; | |
cd62b7da DG |
4123 | |
4124 | respond_in_thread: /* call back to mid-layer using invocation thread */ | |
4125 | cmnd->result = scsi_result; | |
4126 | cmnd->scsi_done(cmnd); | |
4127 | return 0; | |
1da177e4 | 4128 | } |
cbf67842 | 4129 | |
23183910 DG |
4130 | /* Note: The following macros create attribute files in the |
4131 | /sys/module/scsi_debug/parameters directory. Unfortunately this | |
4132 | driver is unaware of a change and cannot trigger auxiliary actions | |
4133 | as it can when the corresponding attribute in the | |
4134 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. | |
4135 | */ | |
773642d9 DG |
4136 | module_param_named(add_host, sdebug_add_host, int, S_IRUGO | S_IWUSR); |
4137 | module_param_named(ato, sdebug_ato, int, S_IRUGO); | |
4138 | module_param_named(clustering, sdebug_clustering, bool, S_IRUGO | S_IWUSR); | |
c2206098 | 4139 | module_param_named(delay, sdebug_jdelay, int, S_IRUGO | S_IWUSR); |
773642d9 DG |
4140 | module_param_named(dev_size_mb, sdebug_dev_size_mb, int, S_IRUGO); |
4141 | module_param_named(dif, sdebug_dif, int, S_IRUGO); | |
4142 | module_param_named(dix, sdebug_dix, int, S_IRUGO); | |
4143 | module_param_named(dsense, sdebug_dsense, int, S_IRUGO | S_IWUSR); | |
4144 | module_param_named(every_nth, sdebug_every_nth, int, S_IRUGO | S_IWUSR); | |
4145 | module_param_named(fake_rw, sdebug_fake_rw, int, S_IRUGO | S_IWUSR); | |
4146 | module_param_named(guard, sdebug_guard, uint, S_IRUGO); | |
4147 | module_param_named(host_lock, sdebug_host_lock, bool, S_IRUGO | S_IWUSR); | |
4148 | module_param_named(lbpu, sdebug_lbpu, int, S_IRUGO); | |
4149 | module_param_named(lbpws, sdebug_lbpws, int, S_IRUGO); | |
4150 | module_param_named(lbpws10, sdebug_lbpws10, int, S_IRUGO); | |
4151 | module_param_named(lbprz, sdebug_lbprz, int, S_IRUGO); | |
4152 | module_param_named(lowest_aligned, sdebug_lowest_aligned, int, S_IRUGO); | |
4153 | module_param_named(max_luns, sdebug_max_luns, int, S_IRUGO | S_IWUSR); | |
4154 | module_param_named(max_queue, sdebug_max_queue, int, S_IRUGO | S_IWUSR); | |
4155 | module_param_named(ndelay, sdebug_ndelay, int, S_IRUGO | S_IWUSR); | |
4156 | module_param_named(no_lun_0, sdebug_no_lun_0, int, S_IRUGO | S_IWUSR); | |
4157 | module_param_named(no_uld, sdebug_no_uld, int, S_IRUGO); | |
4158 | module_param_named(num_parts, sdebug_num_parts, int, S_IRUGO); | |
4159 | module_param_named(num_tgts, sdebug_num_tgts, int, S_IRUGO | S_IWUSR); | |
4160 | module_param_named(opt_blks, sdebug_opt_blks, int, S_IRUGO); | |
4161 | module_param_named(opts, sdebug_opts, int, S_IRUGO | S_IWUSR); | |
4162 | module_param_named(physblk_exp, sdebug_physblk_exp, int, S_IRUGO); | |
4163 | module_param_named(ptype, sdebug_ptype, int, S_IRUGO | S_IWUSR); | |
4164 | module_param_named(removable, sdebug_removable, bool, S_IRUGO | S_IWUSR); | |
4165 | module_param_named(scsi_level, sdebug_scsi_level, int, S_IRUGO); | |
4166 | module_param_named(sector_size, sdebug_sector_size, int, S_IRUGO); | |
c4837394 | 4167 | module_param_named(statistics, sdebug_statistics, bool, S_IRUGO | S_IWUSR); |
773642d9 | 4168 | module_param_named(strict, sdebug_strict, bool, S_IRUGO | S_IWUSR); |
c4837394 | 4169 | module_param_named(submit_queues, submit_queues, int, S_IRUGO); |
773642d9 DG |
4170 | module_param_named(unmap_alignment, sdebug_unmap_alignment, int, S_IRUGO); |
4171 | module_param_named(unmap_granularity, sdebug_unmap_granularity, int, S_IRUGO); | |
4172 | module_param_named(unmap_max_blocks, sdebug_unmap_max_blocks, int, S_IRUGO); | |
4173 | module_param_named(unmap_max_desc, sdebug_unmap_max_desc, int, S_IRUGO); | |
4174 | module_param_named(virtual_gb, sdebug_virtual_gb, int, S_IRUGO | S_IWUSR); | |
09ba24c1 | 4175 | module_param_named(uuid_ctl, sdebug_uuid_ctl, int, S_IRUGO); |
773642d9 | 4176 | module_param_named(vpd_use_hostno, sdebug_vpd_use_hostno, int, |
5b94e232 | 4177 | S_IRUGO | S_IWUSR); |
773642d9 | 4178 | module_param_named(write_same_length, sdebug_write_same_length, int, |
5b94e232 | 4179 | S_IRUGO | S_IWUSR); |
1da177e4 LT |
4180 | |
4181 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); | |
4182 | MODULE_DESCRIPTION("SCSI debug adapter driver"); | |
4183 | MODULE_LICENSE("GPL"); | |
b01f6f83 | 4184 | MODULE_VERSION(SDEBUG_VERSION); |
1da177e4 LT |
4185 | |
4186 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); | |
5b94e232 | 4187 | MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)"); |
0759c666 | 4188 | MODULE_PARM_DESC(clustering, "when set enables larger transfers (def=0)"); |
cbf67842 | 4189 | MODULE_PARM_DESC(delay, "response delay (def=1 jiffy); 0:imm, -1,-2:tiny"); |
c2248fc9 | 4190 | MODULE_PARM_DESC(dev_size_mb, "size in MiB of ram shared by devs(def=8)"); |
5b94e232 MP |
4191 | MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); |
4192 | MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); | |
c65b1445 | 4193 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); |
beb87c33 | 4194 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
23183910 | 4195 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
5b94e232 | 4196 | MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)"); |
185dd232 | 4197 | MODULE_PARM_DESC(host_lock, "host_lock is ignored (def=0)"); |
5b94e232 MP |
4198 | MODULE_PARM_DESC(lbpu, "enable LBP, support UNMAP command (def=0)"); |
4199 | MODULE_PARM_DESC(lbpws, "enable LBP, support WRITE SAME(16) with UNMAP bit (def=0)"); | |
4200 | MODULE_PARM_DESC(lbpws10, "enable LBP, support WRITE SAME(10) with UNMAP bit (def=0)"); | |
760f3b03 DG |
4201 | MODULE_PARM_DESC(lbprz, |
4202 | "on read unmapped LBs return 0 when 1 (def), return 0xff when 2"); | |
5b94e232 | 4203 | MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)"); |
c65b1445 | 4204 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
cbf67842 DG |
4205 | MODULE_PARM_DESC(max_queue, "max number of queued commands (1 to max(def))"); |
4206 | MODULE_PARM_DESC(ndelay, "response delay in nanoseconds (def=0 -> ignore)"); | |
c65b1445 | 4207 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); |
78d4e5a0 | 4208 | MODULE_PARM_DESC(no_uld, "stop ULD (e.g. sd driver) attaching (def=0))"); |
1da177e4 | 4209 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
c65b1445 | 4210 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
32c5844a | 4211 | MODULE_PARM_DESC(opt_blks, "optimal transfer length in blocks (def=1024)"); |
6f3cbf55 | 4212 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
5b94e232 | 4213 | MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)"); |
1da177e4 | 4214 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
d986788b | 4215 | MODULE_PARM_DESC(removable, "claim to have removable media (def=0)"); |
760f3b03 | 4216 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=7[SPC-5])"); |
ea61fca5 | 4217 | MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)"); |
c4837394 | 4218 | MODULE_PARM_DESC(statistics, "collect statistics on commands, queues (def=0)"); |
c2248fc9 | 4219 | MODULE_PARM_DESC(strict, "stricter checks: reserved field in cdb (def=0)"); |
c4837394 | 4220 | MODULE_PARM_DESC(submit_queues, "support for block multi-queue (def=1)"); |
5b94e232 MP |
4221 | MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)"); |
4222 | MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=1)"); | |
6014759c MP |
4223 | MODULE_PARM_DESC(unmap_max_blocks, "max # of blocks can be unmapped in one cmd (def=0xffffffff)"); |
4224 | MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=256)"); | |
09ba24c1 DG |
4225 | MODULE_PARM_DESC(uuid_ctl, |
4226 | "1->use uuid for lu name, 0->don't, 2->all use same (def=0)"); | |
c2248fc9 | 4227 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte (GiB) size (def=0 -> use dev_size_mb)"); |
5b94e232 MP |
4228 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
4229 | MODULE_PARM_DESC(write_same_length, "Maximum blocks per WRITE SAME cmd (def=0xffff)"); | |
1da177e4 | 4230 | |
760f3b03 DG |
4231 | #define SDEBUG_INFO_LEN 256 |
4232 | static char sdebug_info[SDEBUG_INFO_LEN]; | |
1da177e4 LT |
4233 | |
4234 | static const char * scsi_debug_info(struct Scsi_Host * shp) | |
4235 | { | |
c4837394 DG |
4236 | int k; |
4237 | ||
760f3b03 DG |
4238 | k = scnprintf(sdebug_info, SDEBUG_INFO_LEN, "%s: version %s [%s]\n", |
4239 | my_name, SDEBUG_VERSION, sdebug_version_date); | |
4240 | if (k >= (SDEBUG_INFO_LEN - 1)) | |
c4837394 | 4241 | return sdebug_info; |
760f3b03 DG |
4242 | scnprintf(sdebug_info + k, SDEBUG_INFO_LEN - k, |
4243 | " dev_size_mb=%d, opts=0x%x, submit_queues=%d, %s=%d", | |
4244 | sdebug_dev_size_mb, sdebug_opts, submit_queues, | |
4245 | "statistics", (int)sdebug_statistics); | |
1da177e4 LT |
4246 | return sdebug_info; |
4247 | } | |
4248 | ||
cbf67842 | 4249 | /* 'echo <val> > /proc/scsi/scsi_debug/<host_id>' writes to opts */ |
fd32119b DG |
4250 | static int scsi_debug_write_info(struct Scsi_Host *host, char *buffer, |
4251 | int length) | |
1da177e4 | 4252 | { |
c8ed555a AV |
4253 | char arr[16]; |
4254 | int opts; | |
4255 | int minLen = length > 15 ? 15 : length; | |
1da177e4 | 4256 | |
c8ed555a AV |
4257 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
4258 | return -EACCES; | |
4259 | memcpy(arr, buffer, minLen); | |
4260 | arr[minLen] = '\0'; | |
4261 | if (1 != sscanf(arr, "%d", &opts)) | |
4262 | return -EINVAL; | |
773642d9 DG |
4263 | sdebug_opts = opts; |
4264 | sdebug_verbose = !!(SDEBUG_OPT_NOISE & opts); | |
4265 | sdebug_any_injecting_opt = !!(SDEBUG_OPT_ALL_INJECTING & opts); | |
4266 | if (sdebug_every_nth != 0) | |
c4837394 | 4267 | tweak_cmnd_count(); |
c8ed555a AV |
4268 | return length; |
4269 | } | |
1da177e4 | 4270 | |
cbf67842 DG |
4271 | /* Output seen with 'cat /proc/scsi/scsi_debug/<host_id>'. It will be the |
4272 | * same for each scsi_debug host (if more than one). Some of the counters | |
4273 | * output are not atomics so might be inaccurate in a busy system. */ | |
c8ed555a AV |
4274 | static int scsi_debug_show_info(struct seq_file *m, struct Scsi_Host *host) |
4275 | { | |
c4837394 DG |
4276 | int f, j, l; |
4277 | struct sdebug_queue *sqp; | |
4278 | ||
4279 | seq_printf(m, "scsi_debug adapter driver, version %s [%s]\n", | |
4280 | SDEBUG_VERSION, sdebug_version_date); | |
4281 | seq_printf(m, "num_tgts=%d, %ssize=%d MB, opts=0x%x, every_nth=%d\n", | |
4282 | sdebug_num_tgts, "shared (ram) ", sdebug_dev_size_mb, | |
4283 | sdebug_opts, sdebug_every_nth); | |
4284 | seq_printf(m, "delay=%d, ndelay=%d, max_luns=%d, sector_size=%d %s\n", | |
4285 | sdebug_jdelay, sdebug_ndelay, sdebug_max_luns, | |
4286 | sdebug_sector_size, "bytes"); | |
4287 | seq_printf(m, "cylinders=%d, heads=%d, sectors=%d, command aborts=%d\n", | |
4288 | sdebug_cylinders_per, sdebug_heads, sdebug_sectors_per, | |
4289 | num_aborts); | |
4290 | seq_printf(m, "RESETs: device=%d, target=%d, bus=%d, host=%d\n", | |
4291 | num_dev_resets, num_target_resets, num_bus_resets, | |
4292 | num_host_resets); | |
4293 | seq_printf(m, "dix_reads=%d, dix_writes=%d, dif_errors=%d\n", | |
4294 | dix_reads, dix_writes, dif_errors); | |
4295 | seq_printf(m, "usec_in_jiffy=%lu, %s=%d, mq_active=%d\n", | |
4296 | TICK_NSEC / 1000, "statistics", sdebug_statistics, | |
4297 | sdebug_mq_active); | |
4298 | seq_printf(m, "cmnd_count=%d, completions=%d, %s=%d, a_tsf=%d\n", | |
4299 | atomic_read(&sdebug_cmnd_count), | |
4300 | atomic_read(&sdebug_completions), | |
4301 | "miss_cpus", atomic_read(&sdebug_miss_cpus), | |
4302 | atomic_read(&sdebug_a_tsf)); | |
4303 | ||
4304 | seq_printf(m, "submit_queues=%d\n", submit_queues); | |
4305 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) { | |
4306 | seq_printf(m, " queue %d:\n", j); | |
4307 | f = find_first_bit(sqp->in_use_bm, sdebug_max_queue); | |
4308 | if (f != sdebug_max_queue) { | |
4309 | l = find_last_bit(sqp->in_use_bm, sdebug_max_queue); | |
4310 | seq_printf(m, " in_use_bm BUSY: %s: %d,%d\n", | |
4311 | "first,last bits", f, l); | |
4312 | } | |
cbf67842 | 4313 | } |
c8ed555a | 4314 | return 0; |
1da177e4 LT |
4315 | } |
4316 | ||
82069379 | 4317 | static ssize_t delay_show(struct device_driver *ddp, char *buf) |
1da177e4 | 4318 | { |
c2206098 | 4319 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_jdelay); |
1da177e4 | 4320 | } |
c4837394 DG |
4321 | /* Returns -EBUSY if jdelay is being changed and commands are queued. The unit |
4322 | * of delay is jiffies. | |
4323 | */ | |
82069379 AM |
4324 | static ssize_t delay_store(struct device_driver *ddp, const char *buf, |
4325 | size_t count) | |
1da177e4 | 4326 | { |
c2206098 | 4327 | int jdelay, res; |
cbf67842 | 4328 | |
b01f6f83 | 4329 | if (count > 0 && sscanf(buf, "%d", &jdelay) == 1) { |
cbf67842 | 4330 | res = count; |
c2206098 | 4331 | if (sdebug_jdelay != jdelay) { |
c4837394 DG |
4332 | int j, k; |
4333 | struct sdebug_queue *sqp; | |
4334 | ||
4335 | block_unblock_all_queues(true); | |
4336 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; | |
4337 | ++j, ++sqp) { | |
4338 | k = find_first_bit(sqp->in_use_bm, | |
4339 | sdebug_max_queue); | |
4340 | if (k != sdebug_max_queue) { | |
4341 | res = -EBUSY; /* queued commands */ | |
4342 | break; | |
4343 | } | |
4344 | } | |
4345 | if (res > 0) { | |
a10bc12a DG |
4346 | /* make sure sdebug_defer instances get |
4347 | * re-allocated for new delay variant */ | |
4348 | free_all_queued(); | |
c2206098 | 4349 | sdebug_jdelay = jdelay; |
773642d9 | 4350 | sdebug_ndelay = 0; |
cbf67842 | 4351 | } |
c4837394 | 4352 | block_unblock_all_queues(false); |
1da177e4 | 4353 | } |
cbf67842 | 4354 | return res; |
1da177e4 LT |
4355 | } |
4356 | return -EINVAL; | |
4357 | } | |
82069379 | 4358 | static DRIVER_ATTR_RW(delay); |
1da177e4 | 4359 | |
cbf67842 DG |
4360 | static ssize_t ndelay_show(struct device_driver *ddp, char *buf) |
4361 | { | |
773642d9 | 4362 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_ndelay); |
cbf67842 DG |
4363 | } |
4364 | /* Returns -EBUSY if ndelay is being changed and commands are queued */ | |
c2206098 | 4365 | /* If > 0 and accepted then sdebug_jdelay is set to JDELAY_OVERRIDDEN */ |
cbf67842 | 4366 | static ssize_t ndelay_store(struct device_driver *ddp, const char *buf, |
fd32119b | 4367 | size_t count) |
cbf67842 | 4368 | { |
c4837394 | 4369 | int ndelay, res; |
cbf67842 DG |
4370 | |
4371 | if ((count > 0) && (1 == sscanf(buf, "%d", &ndelay)) && | |
c4837394 | 4372 | (ndelay >= 0) && (ndelay < (1000 * 1000 * 1000))) { |
cbf67842 | 4373 | res = count; |
773642d9 | 4374 | if (sdebug_ndelay != ndelay) { |
c4837394 DG |
4375 | int j, k; |
4376 | struct sdebug_queue *sqp; | |
4377 | ||
4378 | block_unblock_all_queues(true); | |
4379 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; | |
4380 | ++j, ++sqp) { | |
4381 | k = find_first_bit(sqp->in_use_bm, | |
4382 | sdebug_max_queue); | |
4383 | if (k != sdebug_max_queue) { | |
4384 | res = -EBUSY; /* queued commands */ | |
4385 | break; | |
4386 | } | |
4387 | } | |
4388 | if (res > 0) { | |
a10bc12a DG |
4389 | /* make sure sdebug_defer instances get |
4390 | * re-allocated for new delay variant */ | |
4391 | free_all_queued(); | |
773642d9 | 4392 | sdebug_ndelay = ndelay; |
c2206098 DG |
4393 | sdebug_jdelay = ndelay ? JDELAY_OVERRIDDEN |
4394 | : DEF_JDELAY; | |
cbf67842 | 4395 | } |
c4837394 | 4396 | block_unblock_all_queues(false); |
cbf67842 DG |
4397 | } |
4398 | return res; | |
4399 | } | |
4400 | return -EINVAL; | |
4401 | } | |
4402 | static DRIVER_ATTR_RW(ndelay); | |
4403 | ||
82069379 | 4404 | static ssize_t opts_show(struct device_driver *ddp, char *buf) |
1da177e4 | 4405 | { |
773642d9 | 4406 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", sdebug_opts); |
1da177e4 LT |
4407 | } |
4408 | ||
82069379 AM |
4409 | static ssize_t opts_store(struct device_driver *ddp, const char *buf, |
4410 | size_t count) | |
1da177e4 LT |
4411 | { |
4412 | int opts; | |
4413 | char work[20]; | |
4414 | ||
4415 | if (1 == sscanf(buf, "%10s", work)) { | |
48a96876 | 4416 | if (0 == strncasecmp(work,"0x", 2)) { |
1da177e4 LT |
4417 | if (1 == sscanf(&work[2], "%x", &opts)) |
4418 | goto opts_done; | |
4419 | } else { | |
4420 | if (1 == sscanf(work, "%d", &opts)) | |
4421 | goto opts_done; | |
4422 | } | |
4423 | } | |
4424 | return -EINVAL; | |
4425 | opts_done: | |
773642d9 DG |
4426 | sdebug_opts = opts; |
4427 | sdebug_verbose = !!(SDEBUG_OPT_NOISE & opts); | |
4428 | sdebug_any_injecting_opt = !!(SDEBUG_OPT_ALL_INJECTING & opts); | |
c4837394 | 4429 | tweak_cmnd_count(); |
1da177e4 LT |
4430 | return count; |
4431 | } | |
82069379 | 4432 | static DRIVER_ATTR_RW(opts); |
1da177e4 | 4433 | |
82069379 | 4434 | static ssize_t ptype_show(struct device_driver *ddp, char *buf) |
1da177e4 | 4435 | { |
773642d9 | 4436 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_ptype); |
1da177e4 | 4437 | } |
82069379 AM |
4438 | static ssize_t ptype_store(struct device_driver *ddp, const char *buf, |
4439 | size_t count) | |
1da177e4 LT |
4440 | { |
4441 | int n; | |
4442 | ||
4443 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 | 4444 | sdebug_ptype = n; |
1da177e4 LT |
4445 | return count; |
4446 | } | |
4447 | return -EINVAL; | |
4448 | } | |
82069379 | 4449 | static DRIVER_ATTR_RW(ptype); |
1da177e4 | 4450 | |
82069379 | 4451 | static ssize_t dsense_show(struct device_driver *ddp, char *buf) |
1da177e4 | 4452 | { |
773642d9 | 4453 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_dsense); |
1da177e4 | 4454 | } |
82069379 AM |
4455 | static ssize_t dsense_store(struct device_driver *ddp, const char *buf, |
4456 | size_t count) | |
1da177e4 LT |
4457 | { |
4458 | int n; | |
4459 | ||
4460 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 | 4461 | sdebug_dsense = n; |
1da177e4 LT |
4462 | return count; |
4463 | } | |
4464 | return -EINVAL; | |
4465 | } | |
82069379 | 4466 | static DRIVER_ATTR_RW(dsense); |
1da177e4 | 4467 | |
82069379 | 4468 | static ssize_t fake_rw_show(struct device_driver *ddp, char *buf) |
23183910 | 4469 | { |
773642d9 | 4470 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_fake_rw); |
23183910 | 4471 | } |
82069379 AM |
4472 | static ssize_t fake_rw_store(struct device_driver *ddp, const char *buf, |
4473 | size_t count) | |
23183910 DG |
4474 | { |
4475 | int n; | |
4476 | ||
4477 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
cbf67842 | 4478 | n = (n > 0); |
773642d9 DG |
4479 | sdebug_fake_rw = (sdebug_fake_rw > 0); |
4480 | if (sdebug_fake_rw != n) { | |
cbf67842 DG |
4481 | if ((0 == n) && (NULL == fake_storep)) { |
4482 | unsigned long sz = | |
773642d9 | 4483 | (unsigned long)sdebug_dev_size_mb * |
cbf67842 DG |
4484 | 1048576; |
4485 | ||
4486 | fake_storep = vmalloc(sz); | |
4487 | if (NULL == fake_storep) { | |
c1287970 | 4488 | pr_err("out of memory, 9\n"); |
cbf67842 DG |
4489 | return -ENOMEM; |
4490 | } | |
4491 | memset(fake_storep, 0, sz); | |
4492 | } | |
773642d9 | 4493 | sdebug_fake_rw = n; |
cbf67842 | 4494 | } |
23183910 DG |
4495 | return count; |
4496 | } | |
4497 | return -EINVAL; | |
4498 | } | |
82069379 | 4499 | static DRIVER_ATTR_RW(fake_rw); |
23183910 | 4500 | |
82069379 | 4501 | static ssize_t no_lun_0_show(struct device_driver *ddp, char *buf) |
c65b1445 | 4502 | { |
773642d9 | 4503 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_no_lun_0); |
c65b1445 | 4504 | } |
82069379 AM |
4505 | static ssize_t no_lun_0_store(struct device_driver *ddp, const char *buf, |
4506 | size_t count) | |
c65b1445 DG |
4507 | { |
4508 | int n; | |
4509 | ||
4510 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 | 4511 | sdebug_no_lun_0 = n; |
c65b1445 DG |
4512 | return count; |
4513 | } | |
4514 | return -EINVAL; | |
4515 | } | |
82069379 | 4516 | static DRIVER_ATTR_RW(no_lun_0); |
c65b1445 | 4517 | |
82069379 | 4518 | static ssize_t num_tgts_show(struct device_driver *ddp, char *buf) |
1da177e4 | 4519 | { |
773642d9 | 4520 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_num_tgts); |
1da177e4 | 4521 | } |
82069379 AM |
4522 | static ssize_t num_tgts_store(struct device_driver *ddp, const char *buf, |
4523 | size_t count) | |
1da177e4 LT |
4524 | { |
4525 | int n; | |
4526 | ||
4527 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 | 4528 | sdebug_num_tgts = n; |
1da177e4 LT |
4529 | sdebug_max_tgts_luns(); |
4530 | return count; | |
4531 | } | |
4532 | return -EINVAL; | |
4533 | } | |
82069379 | 4534 | static DRIVER_ATTR_RW(num_tgts); |
1da177e4 | 4535 | |
82069379 | 4536 | static ssize_t dev_size_mb_show(struct device_driver *ddp, char *buf) |
1da177e4 | 4537 | { |
773642d9 | 4538 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_dev_size_mb); |
1da177e4 | 4539 | } |
82069379 | 4540 | static DRIVER_ATTR_RO(dev_size_mb); |
1da177e4 | 4541 | |
82069379 | 4542 | static ssize_t num_parts_show(struct device_driver *ddp, char *buf) |
1da177e4 | 4543 | { |
773642d9 | 4544 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_num_parts); |
1da177e4 | 4545 | } |
82069379 | 4546 | static DRIVER_ATTR_RO(num_parts); |
1da177e4 | 4547 | |
82069379 | 4548 | static ssize_t every_nth_show(struct device_driver *ddp, char *buf) |
1da177e4 | 4549 | { |
773642d9 | 4550 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_every_nth); |
1da177e4 | 4551 | } |
82069379 AM |
4552 | static ssize_t every_nth_store(struct device_driver *ddp, const char *buf, |
4553 | size_t count) | |
1da177e4 LT |
4554 | { |
4555 | int nth; | |
4556 | ||
4557 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { | |
773642d9 | 4558 | sdebug_every_nth = nth; |
c4837394 DG |
4559 | if (nth && !sdebug_statistics) { |
4560 | pr_info("every_nth needs statistics=1, set it\n"); | |
4561 | sdebug_statistics = true; | |
4562 | } | |
4563 | tweak_cmnd_count(); | |
1da177e4 LT |
4564 | return count; |
4565 | } | |
4566 | return -EINVAL; | |
4567 | } | |
82069379 | 4568 | static DRIVER_ATTR_RW(every_nth); |
1da177e4 | 4569 | |
82069379 | 4570 | static ssize_t max_luns_show(struct device_driver *ddp, char *buf) |
1da177e4 | 4571 | { |
773642d9 | 4572 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_max_luns); |
1da177e4 | 4573 | } |
82069379 AM |
4574 | static ssize_t max_luns_store(struct device_driver *ddp, const char *buf, |
4575 | size_t count) | |
1da177e4 LT |
4576 | { |
4577 | int n; | |
19c8ead7 | 4578 | bool changed; |
1da177e4 LT |
4579 | |
4580 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
8d039e22 DG |
4581 | if (n > 256) { |
4582 | pr_warn("max_luns can be no more than 256\n"); | |
4583 | return -EINVAL; | |
4584 | } | |
773642d9 DG |
4585 | changed = (sdebug_max_luns != n); |
4586 | sdebug_max_luns = n; | |
1da177e4 | 4587 | sdebug_max_tgts_luns(); |
773642d9 | 4588 | if (changed && (sdebug_scsi_level >= 5)) { /* >= SPC-3 */ |
19c8ead7 EM |
4589 | struct sdebug_host_info *sdhp; |
4590 | struct sdebug_dev_info *dp; | |
4591 | ||
4592 | spin_lock(&sdebug_host_list_lock); | |
4593 | list_for_each_entry(sdhp, &sdebug_host_list, | |
4594 | host_list) { | |
4595 | list_for_each_entry(dp, &sdhp->dev_info_list, | |
4596 | dev_list) { | |
4597 | set_bit(SDEBUG_UA_LUNS_CHANGED, | |
4598 | dp->uas_bm); | |
4599 | } | |
4600 | } | |
4601 | spin_unlock(&sdebug_host_list_lock); | |
4602 | } | |
1da177e4 LT |
4603 | return count; |
4604 | } | |
4605 | return -EINVAL; | |
4606 | } | |
82069379 | 4607 | static DRIVER_ATTR_RW(max_luns); |
1da177e4 | 4608 | |
82069379 | 4609 | static ssize_t max_queue_show(struct device_driver *ddp, char *buf) |
78d4e5a0 | 4610 | { |
773642d9 | 4611 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_max_queue); |
78d4e5a0 | 4612 | } |
cbf67842 DG |
4613 | /* N.B. max_queue can be changed while there are queued commands. In flight |
4614 | * commands beyond the new max_queue will be completed. */ | |
82069379 AM |
4615 | static ssize_t max_queue_store(struct device_driver *ddp, const char *buf, |
4616 | size_t count) | |
78d4e5a0 | 4617 | { |
c4837394 DG |
4618 | int j, n, k, a; |
4619 | struct sdebug_queue *sqp; | |
78d4e5a0 DG |
4620 | |
4621 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n > 0) && | |
c4837394 DG |
4622 | (n <= SDEBUG_CANQUEUE)) { |
4623 | block_unblock_all_queues(true); | |
4624 | k = 0; | |
4625 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; | |
4626 | ++j, ++sqp) { | |
4627 | a = find_last_bit(sqp->in_use_bm, SDEBUG_CANQUEUE); | |
4628 | if (a > k) | |
4629 | k = a; | |
4630 | } | |
773642d9 | 4631 | sdebug_max_queue = n; |
c4837394 | 4632 | if (k == SDEBUG_CANQUEUE) |
cbf67842 DG |
4633 | atomic_set(&retired_max_queue, 0); |
4634 | else if (k >= n) | |
4635 | atomic_set(&retired_max_queue, k + 1); | |
4636 | else | |
4637 | atomic_set(&retired_max_queue, 0); | |
c4837394 | 4638 | block_unblock_all_queues(false); |
78d4e5a0 DG |
4639 | return count; |
4640 | } | |
4641 | return -EINVAL; | |
4642 | } | |
82069379 | 4643 | static DRIVER_ATTR_RW(max_queue); |
78d4e5a0 | 4644 | |
82069379 | 4645 | static ssize_t no_uld_show(struct device_driver *ddp, char *buf) |
78d4e5a0 | 4646 | { |
773642d9 | 4647 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_no_uld); |
78d4e5a0 | 4648 | } |
82069379 | 4649 | static DRIVER_ATTR_RO(no_uld); |
78d4e5a0 | 4650 | |
82069379 | 4651 | static ssize_t scsi_level_show(struct device_driver *ddp, char *buf) |
1da177e4 | 4652 | { |
773642d9 | 4653 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_scsi_level); |
1da177e4 | 4654 | } |
82069379 | 4655 | static DRIVER_ATTR_RO(scsi_level); |
1da177e4 | 4656 | |
82069379 | 4657 | static ssize_t virtual_gb_show(struct device_driver *ddp, char *buf) |
c65b1445 | 4658 | { |
773642d9 | 4659 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_virtual_gb); |
c65b1445 | 4660 | } |
82069379 AM |
4661 | static ssize_t virtual_gb_store(struct device_driver *ddp, const char *buf, |
4662 | size_t count) | |
c65b1445 | 4663 | { |
c2248fc9 | 4664 | int n; |
0d01c5df | 4665 | bool changed; |
c65b1445 DG |
4666 | |
4667 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 DG |
4668 | changed = (sdebug_virtual_gb != n); |
4669 | sdebug_virtual_gb = n; | |
28898873 | 4670 | sdebug_capacity = get_sdebug_capacity(); |
0d01c5df DG |
4671 | if (changed) { |
4672 | struct sdebug_host_info *sdhp; | |
4673 | struct sdebug_dev_info *dp; | |
4674 | ||
4bc6b634 | 4675 | spin_lock(&sdebug_host_list_lock); |
0d01c5df DG |
4676 | list_for_each_entry(sdhp, &sdebug_host_list, |
4677 | host_list) { | |
4678 | list_for_each_entry(dp, &sdhp->dev_info_list, | |
4679 | dev_list) { | |
4680 | set_bit(SDEBUG_UA_CAPACITY_CHANGED, | |
4681 | dp->uas_bm); | |
4682 | } | |
4683 | } | |
4bc6b634 | 4684 | spin_unlock(&sdebug_host_list_lock); |
0d01c5df | 4685 | } |
c65b1445 DG |
4686 | return count; |
4687 | } | |
4688 | return -EINVAL; | |
4689 | } | |
82069379 | 4690 | static DRIVER_ATTR_RW(virtual_gb); |
c65b1445 | 4691 | |
82069379 | 4692 | static ssize_t add_host_show(struct device_driver *ddp, char *buf) |
1da177e4 | 4693 | { |
773642d9 | 4694 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_add_host); |
1da177e4 LT |
4695 | } |
4696 | ||
fd32119b DG |
4697 | static int sdebug_add_adapter(void); |
4698 | static void sdebug_remove_adapter(void); | |
4699 | ||
82069379 AM |
4700 | static ssize_t add_host_store(struct device_driver *ddp, const char *buf, |
4701 | size_t count) | |
1da177e4 | 4702 | { |
f3df41cf | 4703 | int delta_hosts; |
1da177e4 | 4704 | |
f3df41cf | 4705 | if (sscanf(buf, "%d", &delta_hosts) != 1) |
1da177e4 | 4706 | return -EINVAL; |
1da177e4 LT |
4707 | if (delta_hosts > 0) { |
4708 | do { | |
4709 | sdebug_add_adapter(); | |
4710 | } while (--delta_hosts); | |
4711 | } else if (delta_hosts < 0) { | |
4712 | do { | |
4713 | sdebug_remove_adapter(); | |
4714 | } while (++delta_hosts); | |
4715 | } | |
4716 | return count; | |
4717 | } | |
82069379 | 4718 | static DRIVER_ATTR_RW(add_host); |
1da177e4 | 4719 | |
82069379 | 4720 | static ssize_t vpd_use_hostno_show(struct device_driver *ddp, char *buf) |
23183910 | 4721 | { |
773642d9 | 4722 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_vpd_use_hostno); |
23183910 | 4723 | } |
82069379 AM |
4724 | static ssize_t vpd_use_hostno_store(struct device_driver *ddp, const char *buf, |
4725 | size_t count) | |
23183910 DG |
4726 | { |
4727 | int n; | |
4728 | ||
4729 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 | 4730 | sdebug_vpd_use_hostno = n; |
23183910 DG |
4731 | return count; |
4732 | } | |
4733 | return -EINVAL; | |
4734 | } | |
82069379 | 4735 | static DRIVER_ATTR_RW(vpd_use_hostno); |
23183910 | 4736 | |
c4837394 DG |
4737 | static ssize_t statistics_show(struct device_driver *ddp, char *buf) |
4738 | { | |
4739 | return scnprintf(buf, PAGE_SIZE, "%d\n", (int)sdebug_statistics); | |
4740 | } | |
4741 | static ssize_t statistics_store(struct device_driver *ddp, const char *buf, | |
4742 | size_t count) | |
4743 | { | |
4744 | int n; | |
4745 | ||
4746 | if ((count > 0) && (sscanf(buf, "%d", &n) == 1) && (n >= 0)) { | |
4747 | if (n > 0) | |
4748 | sdebug_statistics = true; | |
4749 | else { | |
4750 | clear_queue_stats(); | |
4751 | sdebug_statistics = false; | |
4752 | } | |
4753 | return count; | |
4754 | } | |
4755 | return -EINVAL; | |
4756 | } | |
4757 | static DRIVER_ATTR_RW(statistics); | |
4758 | ||
82069379 | 4759 | static ssize_t sector_size_show(struct device_driver *ddp, char *buf) |
597136ab | 4760 | { |
773642d9 | 4761 | return scnprintf(buf, PAGE_SIZE, "%u\n", sdebug_sector_size); |
597136ab | 4762 | } |
82069379 | 4763 | static DRIVER_ATTR_RO(sector_size); |
597136ab | 4764 | |
c4837394 DG |
4765 | static ssize_t submit_queues_show(struct device_driver *ddp, char *buf) |
4766 | { | |
4767 | return scnprintf(buf, PAGE_SIZE, "%d\n", submit_queues); | |
4768 | } | |
4769 | static DRIVER_ATTR_RO(submit_queues); | |
4770 | ||
82069379 | 4771 | static ssize_t dix_show(struct device_driver *ddp, char *buf) |
c6a44287 | 4772 | { |
773642d9 | 4773 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_dix); |
c6a44287 | 4774 | } |
82069379 | 4775 | static DRIVER_ATTR_RO(dix); |
c6a44287 | 4776 | |
82069379 | 4777 | static ssize_t dif_show(struct device_driver *ddp, char *buf) |
c6a44287 | 4778 | { |
773642d9 | 4779 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_dif); |
c6a44287 | 4780 | } |
82069379 | 4781 | static DRIVER_ATTR_RO(dif); |
c6a44287 | 4782 | |
82069379 | 4783 | static ssize_t guard_show(struct device_driver *ddp, char *buf) |
c6a44287 | 4784 | { |
773642d9 | 4785 | return scnprintf(buf, PAGE_SIZE, "%u\n", sdebug_guard); |
c6a44287 | 4786 | } |
82069379 | 4787 | static DRIVER_ATTR_RO(guard); |
c6a44287 | 4788 | |
82069379 | 4789 | static ssize_t ato_show(struct device_driver *ddp, char *buf) |
c6a44287 | 4790 | { |
773642d9 | 4791 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_ato); |
c6a44287 | 4792 | } |
82069379 | 4793 | static DRIVER_ATTR_RO(ato); |
c6a44287 | 4794 | |
82069379 | 4795 | static ssize_t map_show(struct device_driver *ddp, char *buf) |
44d92694 MP |
4796 | { |
4797 | ssize_t count; | |
4798 | ||
5b94e232 | 4799 | if (!scsi_debug_lbp()) |
44d92694 MP |
4800 | return scnprintf(buf, PAGE_SIZE, "0-%u\n", |
4801 | sdebug_store_sectors); | |
4802 | ||
c7badc90 TH |
4803 | count = scnprintf(buf, PAGE_SIZE - 1, "%*pbl", |
4804 | (int)map_size, map_storep); | |
44d92694 | 4805 | buf[count++] = '\n'; |
c7badc90 | 4806 | buf[count] = '\0'; |
44d92694 MP |
4807 | |
4808 | return count; | |
4809 | } | |
82069379 | 4810 | static DRIVER_ATTR_RO(map); |
44d92694 | 4811 | |
82069379 | 4812 | static ssize_t removable_show(struct device_driver *ddp, char *buf) |
d986788b | 4813 | { |
773642d9 | 4814 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_removable ? 1 : 0); |
d986788b | 4815 | } |
82069379 AM |
4816 | static ssize_t removable_store(struct device_driver *ddp, const char *buf, |
4817 | size_t count) | |
d986788b MP |
4818 | { |
4819 | int n; | |
4820 | ||
4821 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 | 4822 | sdebug_removable = (n > 0); |
d986788b MP |
4823 | return count; |
4824 | } | |
4825 | return -EINVAL; | |
4826 | } | |
82069379 | 4827 | static DRIVER_ATTR_RW(removable); |
d986788b | 4828 | |
cbf67842 DG |
4829 | static ssize_t host_lock_show(struct device_driver *ddp, char *buf) |
4830 | { | |
773642d9 | 4831 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!sdebug_host_lock); |
cbf67842 | 4832 | } |
185dd232 | 4833 | /* N.B. sdebug_host_lock does nothing, kept for backward compatibility */ |
cbf67842 DG |
4834 | static ssize_t host_lock_store(struct device_driver *ddp, const char *buf, |
4835 | size_t count) | |
4836 | { | |
185dd232 | 4837 | int n; |
cbf67842 DG |
4838 | |
4839 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
185dd232 DG |
4840 | sdebug_host_lock = (n > 0); |
4841 | return count; | |
cbf67842 DG |
4842 | } |
4843 | return -EINVAL; | |
4844 | } | |
4845 | static DRIVER_ATTR_RW(host_lock); | |
4846 | ||
c2248fc9 DG |
4847 | static ssize_t strict_show(struct device_driver *ddp, char *buf) |
4848 | { | |
773642d9 | 4849 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!sdebug_strict); |
c2248fc9 DG |
4850 | } |
4851 | static ssize_t strict_store(struct device_driver *ddp, const char *buf, | |
4852 | size_t count) | |
4853 | { | |
4854 | int n; | |
4855 | ||
4856 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 | 4857 | sdebug_strict = (n > 0); |
c2248fc9 DG |
4858 | return count; |
4859 | } | |
4860 | return -EINVAL; | |
4861 | } | |
4862 | static DRIVER_ATTR_RW(strict); | |
4863 | ||
09ba24c1 DG |
4864 | static ssize_t uuid_ctl_show(struct device_driver *ddp, char *buf) |
4865 | { | |
4866 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!sdebug_uuid_ctl); | |
4867 | } | |
4868 | static DRIVER_ATTR_RO(uuid_ctl); | |
4869 | ||
cbf67842 | 4870 | |
82069379 | 4871 | /* Note: The following array creates attribute files in the |
23183910 DG |
4872 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these |
4873 | files (over those found in the /sys/module/scsi_debug/parameters | |
4874 | directory) is that auxiliary actions can be triggered when an attribute | |
4875 | is changed. For example see: sdebug_add_host_store() above. | |
4876 | */ | |
6ecaff7f | 4877 | |
82069379 AM |
4878 | static struct attribute *sdebug_drv_attrs[] = { |
4879 | &driver_attr_delay.attr, | |
4880 | &driver_attr_opts.attr, | |
4881 | &driver_attr_ptype.attr, | |
4882 | &driver_attr_dsense.attr, | |
4883 | &driver_attr_fake_rw.attr, | |
4884 | &driver_attr_no_lun_0.attr, | |
4885 | &driver_attr_num_tgts.attr, | |
4886 | &driver_attr_dev_size_mb.attr, | |
4887 | &driver_attr_num_parts.attr, | |
4888 | &driver_attr_every_nth.attr, | |
4889 | &driver_attr_max_luns.attr, | |
4890 | &driver_attr_max_queue.attr, | |
4891 | &driver_attr_no_uld.attr, | |
4892 | &driver_attr_scsi_level.attr, | |
4893 | &driver_attr_virtual_gb.attr, | |
4894 | &driver_attr_add_host.attr, | |
4895 | &driver_attr_vpd_use_hostno.attr, | |
4896 | &driver_attr_sector_size.attr, | |
c4837394 DG |
4897 | &driver_attr_statistics.attr, |
4898 | &driver_attr_submit_queues.attr, | |
82069379 AM |
4899 | &driver_attr_dix.attr, |
4900 | &driver_attr_dif.attr, | |
4901 | &driver_attr_guard.attr, | |
4902 | &driver_attr_ato.attr, | |
4903 | &driver_attr_map.attr, | |
4904 | &driver_attr_removable.attr, | |
cbf67842 DG |
4905 | &driver_attr_host_lock.attr, |
4906 | &driver_attr_ndelay.attr, | |
c2248fc9 | 4907 | &driver_attr_strict.attr, |
09ba24c1 | 4908 | &driver_attr_uuid_ctl.attr, |
82069379 AM |
4909 | NULL, |
4910 | }; | |
4911 | ATTRIBUTE_GROUPS(sdebug_drv); | |
1da177e4 | 4912 | |
11ddceca | 4913 | static struct device *pseudo_primary; |
8dea0d02 | 4914 | |
1da177e4 LT |
4915 | static int __init scsi_debug_init(void) |
4916 | { | |
5f2578e5 | 4917 | unsigned long sz; |
1da177e4 LT |
4918 | int host_to_add; |
4919 | int k; | |
6ecaff7f | 4920 | int ret; |
1da177e4 | 4921 | |
cbf67842 DG |
4922 | atomic_set(&retired_max_queue, 0); |
4923 | ||
773642d9 | 4924 | if (sdebug_ndelay >= 1000 * 1000 * 1000) { |
c1287970 | 4925 | pr_warn("ndelay must be less than 1 second, ignored\n"); |
773642d9 DG |
4926 | sdebug_ndelay = 0; |
4927 | } else if (sdebug_ndelay > 0) | |
c2206098 | 4928 | sdebug_jdelay = JDELAY_OVERRIDDEN; |
cbf67842 | 4929 | |
773642d9 | 4930 | switch (sdebug_sector_size) { |
597136ab MP |
4931 | case 512: |
4932 | case 1024: | |
4933 | case 2048: | |
4934 | case 4096: | |
4935 | break; | |
4936 | default: | |
773642d9 | 4937 | pr_err("invalid sector_size %d\n", sdebug_sector_size); |
597136ab MP |
4938 | return -EINVAL; |
4939 | } | |
4940 | ||
773642d9 | 4941 | switch (sdebug_dif) { |
c6a44287 MP |
4942 | |
4943 | case SD_DIF_TYPE0_PROTECTION: | |
f46eb0e9 | 4944 | break; |
c6a44287 | 4945 | case SD_DIF_TYPE1_PROTECTION: |
395cef03 | 4946 | case SD_DIF_TYPE2_PROTECTION: |
c6a44287 | 4947 | case SD_DIF_TYPE3_PROTECTION: |
f46eb0e9 | 4948 | have_dif_prot = true; |
c6a44287 MP |
4949 | break; |
4950 | ||
4951 | default: | |
c1287970 | 4952 | pr_err("dif must be 0, 1, 2 or 3\n"); |
c6a44287 MP |
4953 | return -EINVAL; |
4954 | } | |
4955 | ||
773642d9 | 4956 | if (sdebug_guard > 1) { |
c1287970 | 4957 | pr_err("guard must be 0 or 1\n"); |
c6a44287 MP |
4958 | return -EINVAL; |
4959 | } | |
4960 | ||
773642d9 | 4961 | if (sdebug_ato > 1) { |
c1287970 | 4962 | pr_err("ato must be 0 or 1\n"); |
c6a44287 MP |
4963 | return -EINVAL; |
4964 | } | |
4965 | ||
773642d9 DG |
4966 | if (sdebug_physblk_exp > 15) { |
4967 | pr_err("invalid physblk_exp %u\n", sdebug_physblk_exp); | |
ea61fca5 MP |
4968 | return -EINVAL; |
4969 | } | |
8d039e22 DG |
4970 | if (sdebug_max_luns > 256) { |
4971 | pr_warn("max_luns can be no more than 256, use default\n"); | |
4972 | sdebug_max_luns = DEF_MAX_LUNS; | |
4973 | } | |
ea61fca5 | 4974 | |
773642d9 DG |
4975 | if (sdebug_lowest_aligned > 0x3fff) { |
4976 | pr_err("lowest_aligned too big: %u\n", sdebug_lowest_aligned); | |
ea61fca5 MP |
4977 | return -EINVAL; |
4978 | } | |
4979 | ||
c4837394 DG |
4980 | if (submit_queues < 1) { |
4981 | pr_err("submit_queues must be 1 or more\n"); | |
4982 | return -EINVAL; | |
4983 | } | |
4984 | sdebug_q_arr = kcalloc(submit_queues, sizeof(struct sdebug_queue), | |
4985 | GFP_KERNEL); | |
4986 | if (sdebug_q_arr == NULL) | |
4987 | return -ENOMEM; | |
4988 | for (k = 0; k < submit_queues; ++k) | |
4989 | spin_lock_init(&sdebug_q_arr[k].qc_lock); | |
4990 | ||
773642d9 DG |
4991 | if (sdebug_dev_size_mb < 1) |
4992 | sdebug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ | |
4993 | sz = (unsigned long)sdebug_dev_size_mb * 1048576; | |
4994 | sdebug_store_sectors = sz / sdebug_sector_size; | |
28898873 | 4995 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 LT |
4996 | |
4997 | /* play around with geometry, don't waste too much on track 0 */ | |
4998 | sdebug_heads = 8; | |
4999 | sdebug_sectors_per = 32; | |
773642d9 | 5000 | if (sdebug_dev_size_mb >= 256) |
1da177e4 | 5001 | sdebug_heads = 64; |
773642d9 | 5002 | else if (sdebug_dev_size_mb >= 16) |
fa785f0a | 5003 | sdebug_heads = 32; |
1da177e4 LT |
5004 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
5005 | (sdebug_sectors_per * sdebug_heads); | |
5006 | if (sdebug_cylinders_per >= 1024) { | |
5007 | /* other LLDs do this; implies >= 1GB ram disk ... */ | |
5008 | sdebug_heads = 255; | |
5009 | sdebug_sectors_per = 63; | |
5010 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
5011 | (sdebug_sectors_per * sdebug_heads); | |
5012 | } | |
5013 | ||
b01f6f83 | 5014 | if (sdebug_fake_rw == 0) { |
cbf67842 DG |
5015 | fake_storep = vmalloc(sz); |
5016 | if (NULL == fake_storep) { | |
c1287970 | 5017 | pr_err("out of memory, 1\n"); |
c4837394 DG |
5018 | ret = -ENOMEM; |
5019 | goto free_q_arr; | |
cbf67842 DG |
5020 | } |
5021 | memset(fake_storep, 0, sz); | |
773642d9 | 5022 | if (sdebug_num_parts > 0) |
cbf67842 | 5023 | sdebug_build_parts(fake_storep, sz); |
1da177e4 | 5024 | } |
1da177e4 | 5025 | |
773642d9 | 5026 | if (sdebug_dix) { |
c6a44287 MP |
5027 | int dif_size; |
5028 | ||
5029 | dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple); | |
5030 | dif_storep = vmalloc(dif_size); | |
5031 | ||
c1287970 | 5032 | pr_err("dif_storep %u bytes @ %p\n", dif_size, dif_storep); |
c6a44287 MP |
5033 | |
5034 | if (dif_storep == NULL) { | |
c1287970 | 5035 | pr_err("out of mem. (DIX)\n"); |
c6a44287 MP |
5036 | ret = -ENOMEM; |
5037 | goto free_vm; | |
5038 | } | |
5039 | ||
5040 | memset(dif_storep, 0xff, dif_size); | |
5041 | } | |
5042 | ||
5b94e232 MP |
5043 | /* Logical Block Provisioning */ |
5044 | if (scsi_debug_lbp()) { | |
773642d9 DG |
5045 | sdebug_unmap_max_blocks = |
5046 | clamp(sdebug_unmap_max_blocks, 0U, 0xffffffffU); | |
6014759c | 5047 | |
773642d9 DG |
5048 | sdebug_unmap_max_desc = |
5049 | clamp(sdebug_unmap_max_desc, 0U, 256U); | |
6014759c | 5050 | |
773642d9 DG |
5051 | sdebug_unmap_granularity = |
5052 | clamp(sdebug_unmap_granularity, 1U, 0xffffffffU); | |
6014759c | 5053 | |
773642d9 DG |
5054 | if (sdebug_unmap_alignment && |
5055 | sdebug_unmap_granularity <= | |
5056 | sdebug_unmap_alignment) { | |
c1287970 | 5057 | pr_err("ERR: unmap_granularity <= unmap_alignment\n"); |
c4837394 DG |
5058 | ret = -EINVAL; |
5059 | goto free_vm; | |
44d92694 MP |
5060 | } |
5061 | ||
b90ebc3d AM |
5062 | map_size = lba_to_map_index(sdebug_store_sectors - 1) + 1; |
5063 | map_storep = vmalloc(BITS_TO_LONGS(map_size) * sizeof(long)); | |
44d92694 | 5064 | |
c1287970 | 5065 | pr_info("%lu provisioning blocks\n", map_size); |
44d92694 MP |
5066 | |
5067 | if (map_storep == NULL) { | |
c1287970 | 5068 | pr_err("out of mem. (MAP)\n"); |
44d92694 MP |
5069 | ret = -ENOMEM; |
5070 | goto free_vm; | |
5071 | } | |
5072 | ||
b90ebc3d | 5073 | bitmap_zero(map_storep, map_size); |
44d92694 MP |
5074 | |
5075 | /* Map first 1KB for partition table */ | |
773642d9 | 5076 | if (sdebug_num_parts) |
44d92694 MP |
5077 | map_region(0, 2); |
5078 | } | |
5079 | ||
9b906779 NB |
5080 | pseudo_primary = root_device_register("pseudo_0"); |
5081 | if (IS_ERR(pseudo_primary)) { | |
c1287970 | 5082 | pr_warn("root_device_register() error\n"); |
9b906779 | 5083 | ret = PTR_ERR(pseudo_primary); |
6ecaff7f RD |
5084 | goto free_vm; |
5085 | } | |
5086 | ret = bus_register(&pseudo_lld_bus); | |
5087 | if (ret < 0) { | |
c1287970 | 5088 | pr_warn("bus_register error: %d\n", ret); |
6ecaff7f RD |
5089 | goto dev_unreg; |
5090 | } | |
5091 | ret = driver_register(&sdebug_driverfs_driver); | |
5092 | if (ret < 0) { | |
c1287970 | 5093 | pr_warn("driver_register error: %d\n", ret); |
6ecaff7f RD |
5094 | goto bus_unreg; |
5095 | } | |
1da177e4 | 5096 | |
773642d9 DG |
5097 | host_to_add = sdebug_add_host; |
5098 | sdebug_add_host = 0; | |
1da177e4 LT |
5099 | |
5100 | for (k = 0; k < host_to_add; k++) { | |
5101 | if (sdebug_add_adapter()) { | |
c1287970 | 5102 | pr_err("sdebug_add_adapter failed k=%d\n", k); |
1da177e4 LT |
5103 | break; |
5104 | } | |
5105 | } | |
5106 | ||
773642d9 DG |
5107 | if (sdebug_verbose) |
5108 | pr_info("built %d host(s)\n", sdebug_add_host); | |
c1287970 | 5109 | |
1da177e4 | 5110 | return 0; |
6ecaff7f | 5111 | |
6ecaff7f RD |
5112 | bus_unreg: |
5113 | bus_unregister(&pseudo_lld_bus); | |
5114 | dev_unreg: | |
9b906779 | 5115 | root_device_unregister(pseudo_primary); |
6ecaff7f | 5116 | free_vm: |
de232af6 TW |
5117 | vfree(map_storep); |
5118 | vfree(dif_storep); | |
6ecaff7f | 5119 | vfree(fake_storep); |
c4837394 DG |
5120 | free_q_arr: |
5121 | kfree(sdebug_q_arr); | |
6ecaff7f | 5122 | return ret; |
1da177e4 LT |
5123 | } |
5124 | ||
5125 | static void __exit scsi_debug_exit(void) | |
5126 | { | |
773642d9 | 5127 | int k = sdebug_add_host; |
1da177e4 LT |
5128 | |
5129 | stop_all_queued(); | |
cbf67842 | 5130 | free_all_queued(); |
1da177e4 LT |
5131 | for (; k; k--) |
5132 | sdebug_remove_adapter(); | |
1da177e4 LT |
5133 | driver_unregister(&sdebug_driverfs_driver); |
5134 | bus_unregister(&pseudo_lld_bus); | |
9b906779 | 5135 | root_device_unregister(pseudo_primary); |
1da177e4 | 5136 | |
de232af6 | 5137 | vfree(dif_storep); |
1da177e4 | 5138 | vfree(fake_storep); |
c4837394 | 5139 | kfree(sdebug_q_arr); |
1da177e4 LT |
5140 | } |
5141 | ||
5142 | device_initcall(scsi_debug_init); | |
5143 | module_exit(scsi_debug_exit); | |
5144 | ||
1da177e4 LT |
5145 | static void sdebug_release_adapter(struct device * dev) |
5146 | { | |
5147 | struct sdebug_host_info *sdbg_host; | |
5148 | ||
5149 | sdbg_host = to_sdebug_host(dev); | |
5150 | kfree(sdbg_host); | |
5151 | } | |
5152 | ||
5153 | static int sdebug_add_adapter(void) | |
5154 | { | |
5155 | int k, devs_per_host; | |
5156 | int error = 0; | |
5157 | struct sdebug_host_info *sdbg_host; | |
8b40228f | 5158 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 | 5159 | |
c65b1445 | 5160 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
1da177e4 | 5161 | if (NULL == sdbg_host) { |
c1287970 | 5162 | pr_err("out of memory at line %d\n", __LINE__); |
1da177e4 LT |
5163 | return -ENOMEM; |
5164 | } | |
5165 | ||
1da177e4 LT |
5166 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
5167 | ||
773642d9 | 5168 | devs_per_host = sdebug_num_tgts * sdebug_max_luns; |
1da177e4 | 5169 | for (k = 0; k < devs_per_host; k++) { |
5cb2fc06 FT |
5170 | sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); |
5171 | if (!sdbg_devinfo) { | |
c1287970 | 5172 | pr_err("out of memory at line %d\n", __LINE__); |
1da177e4 LT |
5173 | error = -ENOMEM; |
5174 | goto clean; | |
5175 | } | |
1da177e4 LT |
5176 | } |
5177 | ||
5178 | spin_lock(&sdebug_host_list_lock); | |
5179 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); | |
5180 | spin_unlock(&sdebug_host_list_lock); | |
5181 | ||
5182 | sdbg_host->dev.bus = &pseudo_lld_bus; | |
9b906779 | 5183 | sdbg_host->dev.parent = pseudo_primary; |
1da177e4 | 5184 | sdbg_host->dev.release = &sdebug_release_adapter; |
773642d9 | 5185 | dev_set_name(&sdbg_host->dev, "adapter%d", sdebug_add_host); |
1da177e4 LT |
5186 | |
5187 | error = device_register(&sdbg_host->dev); | |
5188 | ||
5189 | if (error) | |
5190 | goto clean; | |
5191 | ||
773642d9 | 5192 | ++sdebug_add_host; |
1da177e4 LT |
5193 | return error; |
5194 | ||
5195 | clean: | |
8b40228f FT |
5196 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
5197 | dev_list) { | |
1da177e4 LT |
5198 | list_del(&sdbg_devinfo->dev_list); |
5199 | kfree(sdbg_devinfo); | |
5200 | } | |
5201 | ||
5202 | kfree(sdbg_host); | |
5203 | return error; | |
5204 | } | |
5205 | ||
5206 | static void sdebug_remove_adapter(void) | |
5207 | { | |
5208 | struct sdebug_host_info * sdbg_host = NULL; | |
5209 | ||
5210 | spin_lock(&sdebug_host_list_lock); | |
5211 | if (!list_empty(&sdebug_host_list)) { | |
5212 | sdbg_host = list_entry(sdebug_host_list.prev, | |
5213 | struct sdebug_host_info, host_list); | |
5214 | list_del(&sdbg_host->host_list); | |
5215 | } | |
5216 | spin_unlock(&sdebug_host_list_lock); | |
5217 | ||
5218 | if (!sdbg_host) | |
5219 | return; | |
5220 | ||
773642d9 DG |
5221 | device_unregister(&sdbg_host->dev); |
5222 | --sdebug_add_host; | |
1da177e4 LT |
5223 | } |
5224 | ||
fd32119b | 5225 | static int sdebug_change_qdepth(struct scsi_device *sdev, int qdepth) |
cbf67842 DG |
5226 | { |
5227 | int num_in_q = 0; | |
cbf67842 DG |
5228 | struct sdebug_dev_info *devip; |
5229 | ||
c4837394 | 5230 | block_unblock_all_queues(true); |
cbf67842 DG |
5231 | devip = (struct sdebug_dev_info *)sdev->hostdata; |
5232 | if (NULL == devip) { | |
c4837394 | 5233 | block_unblock_all_queues(false); |
cbf67842 DG |
5234 | return -ENODEV; |
5235 | } | |
5236 | num_in_q = atomic_read(&devip->num_in_q); | |
c40ecc12 CH |
5237 | |
5238 | if (qdepth < 1) | |
5239 | qdepth = 1; | |
c4837394 DG |
5240 | /* allow to exceed max host qc_arr elements for testing */ |
5241 | if (qdepth > SDEBUG_CANQUEUE + 10) | |
5242 | qdepth = SDEBUG_CANQUEUE + 10; | |
db5ed4df | 5243 | scsi_change_queue_depth(sdev, qdepth); |
c40ecc12 | 5244 | |
773642d9 | 5245 | if (SDEBUG_OPT_Q_NOISE & sdebug_opts) { |
c4837394 | 5246 | sdev_printk(KERN_INFO, sdev, "%s: qdepth=%d, num_in_q=%d\n", |
c40ecc12 | 5247 | __func__, qdepth, num_in_q); |
cbf67842 | 5248 | } |
c4837394 | 5249 | block_unblock_all_queues(false); |
cbf67842 DG |
5250 | return sdev->queue_depth; |
5251 | } | |
5252 | ||
c4837394 | 5253 | static bool fake_timeout(struct scsi_cmnd *scp) |
817fd66b | 5254 | { |
c4837394 | 5255 | if (0 == (atomic_read(&sdebug_cmnd_count) % abs(sdebug_every_nth))) { |
773642d9 DG |
5256 | if (sdebug_every_nth < -1) |
5257 | sdebug_every_nth = -1; | |
5258 | if (SDEBUG_OPT_TIMEOUT & sdebug_opts) | |
c4837394 | 5259 | return true; /* ignore command causing timeout */ |
773642d9 | 5260 | else if (SDEBUG_OPT_MAC_TIMEOUT & sdebug_opts && |
817fd66b | 5261 | scsi_medium_access_command(scp)) |
c4837394 | 5262 | return true; /* time out reads and writes */ |
817fd66b | 5263 | } |
c4837394 | 5264 | return false; |
817fd66b DG |
5265 | } |
5266 | ||
fd32119b DG |
5267 | static int scsi_debug_queuecommand(struct Scsi_Host *shost, |
5268 | struct scsi_cmnd *scp) | |
c2248fc9 DG |
5269 | { |
5270 | u8 sdeb_i; | |
5271 | struct scsi_device *sdp = scp->device; | |
5272 | const struct opcode_info_t *oip; | |
5273 | const struct opcode_info_t *r_oip; | |
5274 | struct sdebug_dev_info *devip; | |
5275 | u8 *cmd = scp->cmnd; | |
5276 | int (*r_pfp)(struct scsi_cmnd *, struct sdebug_dev_info *); | |
5277 | int k, na; | |
5278 | int errsts = 0; | |
c2248fc9 DG |
5279 | u32 flags; |
5280 | u16 sa; | |
5281 | u8 opcode = cmd[0]; | |
5282 | bool has_wlun_rl; | |
c2248fc9 DG |
5283 | |
5284 | scsi_set_resid(scp, 0); | |
c4837394 DG |
5285 | if (sdebug_statistics) |
5286 | atomic_inc(&sdebug_cmnd_count); | |
f46eb0e9 DG |
5287 | if (unlikely(sdebug_verbose && |
5288 | !(SDEBUG_OPT_NO_CDB_NOISE & sdebug_opts))) { | |
c2248fc9 DG |
5289 | char b[120]; |
5290 | int n, len, sb; | |
5291 | ||
5292 | len = scp->cmd_len; | |
5293 | sb = (int)sizeof(b); | |
5294 | if (len > 32) | |
5295 | strcpy(b, "too long, over 32 bytes"); | |
5296 | else { | |
5297 | for (k = 0, n = 0; k < len && n < sb; ++k) | |
5298 | n += scnprintf(b + n, sb - n, "%02x ", | |
5299 | (u32)cmd[k]); | |
5300 | } | |
c4837394 DG |
5301 | if (sdebug_mq_active) |
5302 | sdev_printk(KERN_INFO, sdp, "%s: tag=%u, cmd %s\n", | |
5303 | my_name, blk_mq_unique_tag(scp->request), | |
5304 | b); | |
5305 | else | |
5306 | sdev_printk(KERN_INFO, sdp, "%s: cmd %s\n", my_name, | |
5307 | b); | |
c2248fc9 | 5308 | } |
34d55434 | 5309 | has_wlun_rl = (sdp->lun == SCSI_W_LUN_REPORT_LUNS); |
f46eb0e9 DG |
5310 | if (unlikely((sdp->lun >= sdebug_max_luns) && !has_wlun_rl)) |
5311 | goto err_out; | |
c2248fc9 DG |
5312 | |
5313 | sdeb_i = opcode_ind_arr[opcode]; /* fully mapped */ | |
5314 | oip = &opcode_info_arr[sdeb_i]; /* safe if table consistent */ | |
5315 | devip = (struct sdebug_dev_info *)sdp->hostdata; | |
f46eb0e9 DG |
5316 | if (unlikely(!devip)) { |
5317 | devip = find_build_dev_info(sdp); | |
c2248fc9 | 5318 | if (NULL == devip) |
f46eb0e9 | 5319 | goto err_out; |
c2248fc9 DG |
5320 | } |
5321 | na = oip->num_attached; | |
5322 | r_pfp = oip->pfp; | |
5323 | if (na) { /* multiple commands with this opcode */ | |
5324 | r_oip = oip; | |
5325 | if (FF_SA & r_oip->flags) { | |
5326 | if (F_SA_LOW & oip->flags) | |
5327 | sa = 0x1f & cmd[1]; | |
5328 | else | |
5329 | sa = get_unaligned_be16(cmd + 8); | |
5330 | for (k = 0; k <= na; oip = r_oip->arrp + k++) { | |
5331 | if (opcode == oip->opcode && sa == oip->sa) | |
5332 | break; | |
5333 | } | |
5334 | } else { /* since no service action only check opcode */ | |
5335 | for (k = 0; k <= na; oip = r_oip->arrp + k++) { | |
5336 | if (opcode == oip->opcode) | |
5337 | break; | |
5338 | } | |
5339 | } | |
5340 | if (k > na) { | |
5341 | if (F_SA_LOW & r_oip->flags) | |
5342 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 4); | |
5343 | else if (F_SA_HIGH & r_oip->flags) | |
5344 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 8, 7); | |
5345 | else | |
5346 | mk_sense_invalid_opcode(scp); | |
5347 | goto check_cond; | |
5348 | } | |
5349 | } /* else (when na==0) we assume the oip is a match */ | |
5350 | flags = oip->flags; | |
f46eb0e9 | 5351 | if (unlikely(F_INV_OP & flags)) { |
c2248fc9 DG |
5352 | mk_sense_invalid_opcode(scp); |
5353 | goto check_cond; | |
5354 | } | |
f46eb0e9 | 5355 | if (unlikely(has_wlun_rl && !(F_RL_WLUN_OK & flags))) { |
773642d9 DG |
5356 | if (sdebug_verbose) |
5357 | sdev_printk(KERN_INFO, sdp, "%s: Opcode 0x%x not%s\n", | |
5358 | my_name, opcode, " supported for wlun"); | |
c2248fc9 DG |
5359 | mk_sense_invalid_opcode(scp); |
5360 | goto check_cond; | |
5361 | } | |
f46eb0e9 | 5362 | if (unlikely(sdebug_strict)) { /* check cdb against mask */ |
c2248fc9 DG |
5363 | u8 rem; |
5364 | int j; | |
5365 | ||
5366 | for (k = 1; k < oip->len_mask[0] && k < 16; ++k) { | |
5367 | rem = ~oip->len_mask[k] & cmd[k]; | |
5368 | if (rem) { | |
5369 | for (j = 7; j >= 0; --j, rem <<= 1) { | |
5370 | if (0x80 & rem) | |
5371 | break; | |
5372 | } | |
5373 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, k, j); | |
5374 | goto check_cond; | |
5375 | } | |
5376 | } | |
5377 | } | |
f46eb0e9 | 5378 | if (unlikely(!(F_SKIP_UA & flags) && |
b01f6f83 DG |
5379 | find_first_bit(devip->uas_bm, |
5380 | SDEBUG_NUM_UAS) != SDEBUG_NUM_UAS)) { | |
f46eb0e9 | 5381 | errsts = make_ua(scp, devip); |
c2248fc9 DG |
5382 | if (errsts) |
5383 | goto check_cond; | |
5384 | } | |
c4837394 | 5385 | if (unlikely((F_M_ACCESS & flags) && atomic_read(&devip->stopped))) { |
c2248fc9 | 5386 | mk_sense_buffer(scp, NOT_READY, LOGICAL_UNIT_NOT_READY, 0x2); |
773642d9 | 5387 | if (sdebug_verbose) |
c2248fc9 DG |
5388 | sdev_printk(KERN_INFO, sdp, "%s reports: Not ready: " |
5389 | "%s\n", my_name, "initializing command " | |
5390 | "required"); | |
5391 | errsts = check_condition_result; | |
5392 | goto fini; | |
5393 | } | |
773642d9 | 5394 | if (sdebug_fake_rw && (F_FAKE_RW & flags)) |
c2248fc9 | 5395 | goto fini; |
f46eb0e9 | 5396 | if (unlikely(sdebug_every_nth)) { |
c4837394 | 5397 | if (fake_timeout(scp)) |
c2248fc9 DG |
5398 | return 0; /* ignore command: make trouble */ |
5399 | } | |
f46eb0e9 DG |
5400 | if (likely(oip->pfp)) |
5401 | errsts = oip->pfp(scp, devip); /* calls a resp_* function */ | |
c2248fc9 DG |
5402 | else if (r_pfp) /* if leaf function ptr NULL, try the root's */ |
5403 | errsts = r_pfp(scp, devip); | |
5404 | ||
5405 | fini: | |
5406 | return schedule_resp(scp, devip, errsts, | |
c2206098 | 5407 | ((F_DELAY_OVERR & flags) ? 0 : sdebug_jdelay)); |
c2248fc9 DG |
5408 | check_cond: |
5409 | return schedule_resp(scp, devip, check_condition_result, 0); | |
f46eb0e9 DG |
5410 | err_out: |
5411 | return schedule_resp(scp, NULL, DID_NO_CONNECT << 16, 0); | |
c2248fc9 DG |
5412 | } |
5413 | ||
9e603ca0 | 5414 | static struct scsi_host_template sdebug_driver_template = { |
c8ed555a AV |
5415 | .show_info = scsi_debug_show_info, |
5416 | .write_info = scsi_debug_write_info, | |
9e603ca0 FT |
5417 | .proc_name = sdebug_proc_name, |
5418 | .name = "SCSI DEBUG", | |
5419 | .info = scsi_debug_info, | |
5420 | .slave_alloc = scsi_debug_slave_alloc, | |
5421 | .slave_configure = scsi_debug_slave_configure, | |
5422 | .slave_destroy = scsi_debug_slave_destroy, | |
5423 | .ioctl = scsi_debug_ioctl, | |
185dd232 | 5424 | .queuecommand = scsi_debug_queuecommand, |
cbf67842 | 5425 | .change_queue_depth = sdebug_change_qdepth, |
9e603ca0 | 5426 | .eh_abort_handler = scsi_debug_abort, |
9e603ca0 | 5427 | .eh_device_reset_handler = scsi_debug_device_reset, |
cbf67842 DG |
5428 | .eh_target_reset_handler = scsi_debug_target_reset, |
5429 | .eh_bus_reset_handler = scsi_debug_bus_reset, | |
9e603ca0 | 5430 | .eh_host_reset_handler = scsi_debug_host_reset, |
c4837394 | 5431 | .can_queue = SDEBUG_CANQUEUE, |
9e603ca0 | 5432 | .this_id = 7, |
65e8617f | 5433 | .sg_tablesize = SG_MAX_SEGMENTS, |
cbf67842 | 5434 | .cmd_per_lun = DEF_CMD_PER_LUN, |
6bb5e6e7 | 5435 | .max_sectors = -1U, |
9e603ca0 FT |
5436 | .use_clustering = DISABLE_CLUSTERING, |
5437 | .module = THIS_MODULE, | |
c40ecc12 | 5438 | .track_queue_depth = 1, |
9e603ca0 FT |
5439 | }; |
5440 | ||
1da177e4 LT |
5441 | static int sdebug_driver_probe(struct device * dev) |
5442 | { | |
22017ed2 DG |
5443 | int error = 0; |
5444 | struct sdebug_host_info *sdbg_host; | |
5445 | struct Scsi_Host *hpnt; | |
f46eb0e9 | 5446 | int hprot; |
1da177e4 LT |
5447 | |
5448 | sdbg_host = to_sdebug_host(dev); | |
5449 | ||
773642d9 DG |
5450 | sdebug_driver_template.can_queue = sdebug_max_queue; |
5451 | if (sdebug_clustering) | |
0759c666 | 5452 | sdebug_driver_template.use_clustering = ENABLE_CLUSTERING; |
78d4e5a0 DG |
5453 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); |
5454 | if (NULL == hpnt) { | |
c1287970 | 5455 | pr_err("scsi_host_alloc failed\n"); |
78d4e5a0 | 5456 | error = -ENODEV; |
1da177e4 | 5457 | return error; |
78d4e5a0 | 5458 | } |
c4837394 DG |
5459 | if (submit_queues > nr_cpu_ids) { |
5460 | pr_warn("%s: trim submit_queues (was %d) to nr_cpu_ids=%d\n", | |
5461 | my_name, submit_queues, nr_cpu_ids); | |
5462 | submit_queues = nr_cpu_ids; | |
5463 | } | |
5464 | /* Decide whether to tell scsi subsystem that we want mq */ | |
5465 | /* Following should give the same answer for each host */ | |
5466 | sdebug_mq_active = shost_use_blk_mq(hpnt) && (submit_queues > 1); | |
5467 | if (sdebug_mq_active) | |
5468 | hpnt->nr_hw_queues = submit_queues; | |
1da177e4 LT |
5469 | |
5470 | sdbg_host->shost = hpnt; | |
5471 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; | |
773642d9 DG |
5472 | if ((hpnt->this_id >= 0) && (sdebug_num_tgts > hpnt->this_id)) |
5473 | hpnt->max_id = sdebug_num_tgts + 1; | |
1da177e4 | 5474 | else |
773642d9 DG |
5475 | hpnt->max_id = sdebug_num_tgts; |
5476 | /* = sdebug_max_luns; */ | |
f2d3fd29 | 5477 | hpnt->max_lun = SCSI_W_LUN_REPORT_LUNS + 1; |
1da177e4 | 5478 | |
f46eb0e9 | 5479 | hprot = 0; |
c6a44287 | 5480 | |
773642d9 | 5481 | switch (sdebug_dif) { |
c6a44287 MP |
5482 | |
5483 | case SD_DIF_TYPE1_PROTECTION: | |
f46eb0e9 | 5484 | hprot = SHOST_DIF_TYPE1_PROTECTION; |
773642d9 | 5485 | if (sdebug_dix) |
f46eb0e9 | 5486 | hprot |= SHOST_DIX_TYPE1_PROTECTION; |
c6a44287 MP |
5487 | break; |
5488 | ||
5489 | case SD_DIF_TYPE2_PROTECTION: | |
f46eb0e9 | 5490 | hprot = SHOST_DIF_TYPE2_PROTECTION; |
773642d9 | 5491 | if (sdebug_dix) |
f46eb0e9 | 5492 | hprot |= SHOST_DIX_TYPE2_PROTECTION; |
c6a44287 MP |
5493 | break; |
5494 | ||
5495 | case SD_DIF_TYPE3_PROTECTION: | |
f46eb0e9 | 5496 | hprot = SHOST_DIF_TYPE3_PROTECTION; |
773642d9 | 5497 | if (sdebug_dix) |
f46eb0e9 | 5498 | hprot |= SHOST_DIX_TYPE3_PROTECTION; |
c6a44287 MP |
5499 | break; |
5500 | ||
5501 | default: | |
773642d9 | 5502 | if (sdebug_dix) |
f46eb0e9 | 5503 | hprot |= SHOST_DIX_TYPE0_PROTECTION; |
c6a44287 MP |
5504 | break; |
5505 | } | |
5506 | ||
f46eb0e9 | 5507 | scsi_host_set_prot(hpnt, hprot); |
c6a44287 | 5508 | |
f46eb0e9 DG |
5509 | if (have_dif_prot || sdebug_dix) |
5510 | pr_info("host protection%s%s%s%s%s%s%s\n", | |
5511 | (hprot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", | |
5512 | (hprot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", | |
5513 | (hprot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", | |
5514 | (hprot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", | |
5515 | (hprot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", | |
5516 | (hprot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", | |
5517 | (hprot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); | |
c6a44287 | 5518 | |
773642d9 | 5519 | if (sdebug_guard == 1) |
c6a44287 MP |
5520 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP); |
5521 | else | |
5522 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC); | |
5523 | ||
773642d9 DG |
5524 | sdebug_verbose = !!(SDEBUG_OPT_NOISE & sdebug_opts); |
5525 | sdebug_any_injecting_opt = !!(SDEBUG_OPT_ALL_INJECTING & sdebug_opts); | |
c4837394 DG |
5526 | if (sdebug_every_nth) /* need stats counters for every_nth */ |
5527 | sdebug_statistics = true; | |
1da177e4 LT |
5528 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
5529 | if (error) { | |
c1287970 | 5530 | pr_err("scsi_add_host failed\n"); |
1da177e4 LT |
5531 | error = -ENODEV; |
5532 | scsi_host_put(hpnt); | |
5533 | } else | |
5534 | scsi_scan_host(hpnt); | |
5535 | ||
cbf67842 | 5536 | return error; |
1da177e4 LT |
5537 | } |
5538 | ||
5539 | static int sdebug_driver_remove(struct device * dev) | |
5540 | { | |
1da177e4 | 5541 | struct sdebug_host_info *sdbg_host; |
8b40228f | 5542 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 LT |
5543 | |
5544 | sdbg_host = to_sdebug_host(dev); | |
5545 | ||
5546 | if (!sdbg_host) { | |
c1287970 | 5547 | pr_err("Unable to locate host info\n"); |
1da177e4 LT |
5548 | return -ENODEV; |
5549 | } | |
5550 | ||
5551 | scsi_remove_host(sdbg_host->shost); | |
5552 | ||
8b40228f FT |
5553 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
5554 | dev_list) { | |
1da177e4 LT |
5555 | list_del(&sdbg_devinfo->dev_list); |
5556 | kfree(sdbg_devinfo); | |
5557 | } | |
5558 | ||
5559 | scsi_host_put(sdbg_host->shost); | |
5560 | return 0; | |
5561 | } | |
5562 | ||
8dea0d02 FT |
5563 | static int pseudo_lld_bus_match(struct device *dev, |
5564 | struct device_driver *dev_driver) | |
1da177e4 | 5565 | { |
8dea0d02 | 5566 | return 1; |
1da177e4 | 5567 | } |
8dea0d02 FT |
5568 | |
5569 | static struct bus_type pseudo_lld_bus = { | |
5570 | .name = "pseudo", | |
5571 | .match = pseudo_lld_bus_match, | |
5572 | .probe = sdebug_driver_probe, | |
5573 | .remove = sdebug_driver_remove, | |
82069379 | 5574 | .drv_groups = sdebug_drv_groups, |
8dea0d02 | 5575 | }; |