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8d7c56d0 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
1da177e4 LT |
3 | * vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv |
4 | * Copyright (C) 1992 Eric Youngdale | |
5 | * Simulate a host adapter with 2 disks attached. Do a lot of checking | |
6 | * to make sure that we are not getting blocks mixed up, and PANIC if | |
7 | * anything out of the ordinary is seen. | |
8 | * ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
9 | * | |
500d0d24 | 10 | * Copyright (C) 2001 - 2021 Douglas Gilbert |
1da177e4 | 11 | * |
30f67481 | 12 | * For documentation see http://sg.danny.cz/sg/scsi_debug.html |
1da177e4 LT |
13 | */ |
14 | ||
c1287970 TW |
15 | |
16 | #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ | |
17 | ||
1da177e4 | 18 | #include <linux/module.h> |
4a5fc1c6 | 19 | #include <linux/align.h> |
1da177e4 | 20 | #include <linux/kernel.h> |
1da177e4 | 21 | #include <linux/errno.h> |
b333a819 | 22 | #include <linux/jiffies.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
1da177e4 LT |
24 | #include <linux/types.h> |
25 | #include <linux/string.h> | |
1da177e4 LT |
26 | #include <linux/fs.h> |
27 | #include <linux/init.h> | |
28 | #include <linux/proc_fs.h> | |
1da177e4 LT |
29 | #include <linux/vmalloc.h> |
30 | #include <linux/moduleparam.h> | |
852e034d | 31 | #include <linux/scatterlist.h> |
1da177e4 | 32 | #include <linux/blkdev.h> |
c6a44287 | 33 | #include <linux/crc-t10dif.h> |
cbf67842 DG |
34 | #include <linux/spinlock.h> |
35 | #include <linux/interrupt.h> | |
36 | #include <linux/atomic.h> | |
37 | #include <linux/hrtimer.h> | |
09ba24c1 | 38 | #include <linux/uuid.h> |
6ebf105c | 39 | #include <linux/t10-pi.h> |
1442f76d | 40 | #include <linux/msdos_partition.h> |
0c4bc91d | 41 | #include <linux/random.h> |
87c715dc | 42 | #include <linux/xarray.h> |
ed9f3e25 | 43 | #include <linux/prefetch.h> |
c6a44287 MP |
44 | |
45 | #include <net/checksum.h> | |
9ff26eef | 46 | |
44d92694 MP |
47 | #include <asm/unaligned.h> |
48 | ||
9ff26eef FT |
49 | #include <scsi/scsi.h> |
50 | #include <scsi/scsi_cmnd.h> | |
51 | #include <scsi/scsi_device.h> | |
1da177e4 LT |
52 | #include <scsi/scsi_host.h> |
53 | #include <scsi/scsicam.h> | |
a34c4e98 | 54 | #include <scsi/scsi_eh.h> |
cbf67842 | 55 | #include <scsi/scsi_tcq.h> |
395cef03 | 56 | #include <scsi/scsi_dbg.h> |
1da177e4 | 57 | |
c6a44287 | 58 | #include "sd.h" |
1da177e4 | 59 | #include "scsi_logging.h" |
1da177e4 | 60 | |
773642d9 | 61 | /* make sure inq_product_rev string corresponds to this version */ |
500d0d24 DG |
62 | #define SDEBUG_VERSION "0191" /* format to fit INQUIRY revision field */ |
63 | static const char *sdebug_version_date = "20210520"; | |
cbf67842 DG |
64 | |
65 | #define MY_NAME "scsi_debug" | |
1da177e4 | 66 | |
6f3cbf55 | 67 | /* Additional Sense Code (ASC) */ |
c65b1445 DG |
68 | #define NO_ADDITIONAL_SENSE 0x0 |
69 | #define LOGICAL_UNIT_NOT_READY 0x4 | |
c2248fc9 | 70 | #define LOGICAL_UNIT_COMMUNICATION_FAILURE 0x8 |
1da177e4 | 71 | #define UNRECOVERED_READ_ERR 0x11 |
c65b1445 | 72 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
1da177e4 | 73 | #define INVALID_OPCODE 0x20 |
22017ed2 | 74 | #define LBA_OUT_OF_RANGE 0x21 |
1da177e4 | 75 | #define INVALID_FIELD_IN_CDB 0x24 |
c65b1445 | 76 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
9447b6ce | 77 | #define WRITE_PROTECTED 0x27 |
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 | 84 | #define POWER_ON_RESET_ASCQ 0x0 |
500d0d24 | 85 | #define POWER_ON_OCCURRED_ASCQ 0x1 |
cbf67842 DG |
86 | #define BUS_RESET_ASCQ 0x2 /* scsi bus reset occurred */ |
87 | #define MODE_CHANGED_ASCQ 0x1 /* mode parameters changed */ | |
22017ed2 | 88 | #define CAPACITY_CHANGED_ASCQ 0x9 |
1da177e4 | 89 | #define SAVING_PARAMS_UNSUP 0x39 |
6f3cbf55 | 90 | #define TRANSPORT_PROBLEM 0x4b |
c65b1445 DG |
91 | #define THRESHOLD_EXCEEDED 0x5d |
92 | #define LOW_POWER_COND_ON 0x5e | |
22017ed2 | 93 | #define MISCOMPARE_VERIFY_ASC 0x1d |
acafd0b9 EM |
94 | #define MICROCODE_CHANGED_ASCQ 0x1 /* with TARGET_CHANGED_ASC */ |
95 | #define MICROCODE_CHANGED_WO_RESET_ASCQ 0x16 | |
481b5e5c | 96 | #define WRITE_ERROR_ASC 0xc |
f0d1cf93 DG |
97 | #define UNALIGNED_WRITE_ASCQ 0x4 |
98 | #define WRITE_BOUNDARY_ASCQ 0x5 | |
99 | #define READ_INVDATA_ASCQ 0x6 | |
100 | #define READ_BOUNDARY_ASCQ 0x7 | |
4a5fc1c6 | 101 | #define ATTEMPT_ACCESS_GAP 0x9 |
f0d1cf93 | 102 | #define INSUFF_ZONE_ASCQ 0xe |
1da177e4 | 103 | |
6f3cbf55 DG |
104 | /* Additional Sense Code Qualifier (ASCQ) */ |
105 | #define ACK_NAK_TO 0x3 | |
106 | ||
1da177e4 LT |
107 | /* Default values for driver parameters */ |
108 | #define DEF_NUM_HOST 1 | |
109 | #define DEF_NUM_TGTS 1 | |
110 | #define DEF_MAX_LUNS 1 | |
111 | /* With these defaults, this driver will make 1 host with 1 target | |
112 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. | |
113 | */ | |
5b94e232 | 114 | #define DEF_ATO 1 |
9b760fd8 | 115 | #define DEF_CDB_LEN 10 |
c2206098 | 116 | #define DEF_JDELAY 1 /* if > 0 unit is a jiffy */ |
9267e0eb | 117 | #define DEF_DEV_SIZE_PRE_INIT 0 |
1da177e4 | 118 | #define DEF_DEV_SIZE_MB 8 |
9267e0eb | 119 | #define DEF_ZBC_DEV_SIZE_MB 128 |
5b94e232 MP |
120 | #define DEF_DIF 0 |
121 | #define DEF_DIX 0 | |
87c715dc | 122 | #define DEF_PER_HOST_STORE false |
1da177e4 | 123 | #define DEF_D_SENSE 0 |
5b94e232 | 124 | #define DEF_EVERY_NTH 0 |
23183910 | 125 | #define DEF_FAKE_RW 0 |
c6a44287 | 126 | #define DEF_GUARD 0 |
cbf67842 | 127 | #define DEF_HOST_LOCK 0 |
5b94e232 MP |
128 | #define DEF_LBPU 0 |
129 | #define DEF_LBPWS 0 | |
130 | #define DEF_LBPWS10 0 | |
be1dd78d | 131 | #define DEF_LBPRZ 1 |
ea61fca5 | 132 | #define DEF_LOWEST_ALIGNED 0 |
cbf67842 | 133 | #define DEF_NDELAY 0 /* if > 0 unit is a nanosecond */ |
5b94e232 MP |
134 | #define DEF_NO_LUN_0 0 |
135 | #define DEF_NUM_PARTS 0 | |
136 | #define DEF_OPTS 0 | |
32c5844a | 137 | #define DEF_OPT_BLKS 1024 |
5b94e232 | 138 | #define DEF_PHYSBLK_EXP 0 |
86e6828a | 139 | #define DEF_OPT_XFERLEN_EXP 0 |
b01f6f83 | 140 | #define DEF_PTYPE TYPE_DISK |
0c4bc91d | 141 | #define DEF_RANDOM false |
d986788b | 142 | #define DEF_REMOVABLE false |
760f3b03 | 143 | #define DEF_SCSI_LEVEL 7 /* INQUIRY, byte2 [6->SPC-4; 7->SPC-5] */ |
5b94e232 MP |
144 | #define DEF_SECTOR_SIZE 512 |
145 | #define DEF_UNMAP_ALIGNMENT 0 | |
146 | #define DEF_UNMAP_GRANULARITY 1 | |
6014759c MP |
147 | #define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF |
148 | #define DEF_UNMAP_MAX_DESC 256 | |
5b94e232 MP |
149 | #define DEF_VIRTUAL_GB 0 |
150 | #define DEF_VPD_USE_HOSTNO 1 | |
151 | #define DEF_WRITESAME_LENGTH 0xFFFF | |
c2248fc9 | 152 | #define DEF_STRICT 0 |
c4837394 DG |
153 | #define DEF_STATISTICS false |
154 | #define DEF_SUBMIT_QUEUES 1 | |
fc13638a | 155 | #define DEF_TUR_MS_TO_READY 0 |
09ba24c1 | 156 | #define DEF_UUID_CTL 0 |
c2206098 | 157 | #define JDELAY_OVERRIDDEN -9999 |
1da177e4 | 158 | |
f0d1cf93 DG |
159 | /* Default parameters for ZBC drives */ |
160 | #define DEF_ZBC_ZONE_SIZE_MB 128 | |
161 | #define DEF_ZBC_MAX_OPEN_ZONES 8 | |
aa8fecf9 | 162 | #define DEF_ZBC_NR_CONV_ZONES 1 |
f0d1cf93 | 163 | |
b01f6f83 DG |
164 | #define SDEBUG_LUN_0_VAL 0 |
165 | ||
773642d9 DG |
166 | /* bit mask values for sdebug_opts */ |
167 | #define SDEBUG_OPT_NOISE 1 | |
168 | #define SDEBUG_OPT_MEDIUM_ERR 2 | |
169 | #define SDEBUG_OPT_TIMEOUT 4 | |
170 | #define SDEBUG_OPT_RECOVERED_ERR 8 | |
171 | #define SDEBUG_OPT_TRANSPORT_ERR 16 | |
172 | #define SDEBUG_OPT_DIF_ERR 32 | |
173 | #define SDEBUG_OPT_DIX_ERR 64 | |
174 | #define SDEBUG_OPT_MAC_TIMEOUT 128 | |
175 | #define SDEBUG_OPT_SHORT_TRANSFER 0x100 | |
176 | #define SDEBUG_OPT_Q_NOISE 0x200 | |
7d5a129b | 177 | #define SDEBUG_OPT_ALL_TSF 0x400 /* ignore */ |
773642d9 DG |
178 | #define SDEBUG_OPT_RARE_TSF 0x800 |
179 | #define SDEBUG_OPT_N_WCE 0x1000 | |
180 | #define SDEBUG_OPT_RESET_NOISE 0x2000 | |
181 | #define SDEBUG_OPT_NO_CDB_NOISE 0x4000 | |
7ee6d1b4 | 182 | #define SDEBUG_OPT_HOST_BUSY 0x8000 |
7382f9d8 | 183 | #define SDEBUG_OPT_CMD_ABORT 0x10000 |
773642d9 DG |
184 | #define SDEBUG_OPT_ALL_NOISE (SDEBUG_OPT_NOISE | SDEBUG_OPT_Q_NOISE | \ |
185 | SDEBUG_OPT_RESET_NOISE) | |
186 | #define SDEBUG_OPT_ALL_INJECTING (SDEBUG_OPT_RECOVERED_ERR | \ | |
187 | SDEBUG_OPT_TRANSPORT_ERR | \ | |
188 | SDEBUG_OPT_DIF_ERR | SDEBUG_OPT_DIX_ERR | \ | |
7ee6d1b4 | 189 | SDEBUG_OPT_SHORT_TRANSFER | \ |
7382f9d8 DG |
190 | SDEBUG_OPT_HOST_BUSY | \ |
191 | SDEBUG_OPT_CMD_ABORT) | |
3a90a63d DG |
192 | #define SDEBUG_OPT_RECOV_DIF_DIX (SDEBUG_OPT_RECOVERED_ERR | \ |
193 | SDEBUG_OPT_DIF_ERR | SDEBUG_OPT_DIX_ERR) | |
1da177e4 | 194 | |
fd32119b | 195 | /* As indicated in SAM-5 and SPC-4 Unit Attentions (UAs) are returned in |
cbf67842 DG |
196 | * priority order. In the subset implemented here lower numbers have higher |
197 | * priority. The UA numbers should be a sequence starting from 0 with | |
198 | * SDEBUG_NUM_UAS being 1 higher than the highest numbered UA. */ | |
199 | #define SDEBUG_UA_POR 0 /* Power on, reset, or bus device reset */ | |
500d0d24 DG |
200 | #define SDEBUG_UA_POOCCUR 1 /* Power on occurred */ |
201 | #define SDEBUG_UA_BUS_RESET 2 | |
202 | #define SDEBUG_UA_MODE_CHANGED 3 | |
203 | #define SDEBUG_UA_CAPACITY_CHANGED 4 | |
204 | #define SDEBUG_UA_LUNS_CHANGED 5 | |
205 | #define SDEBUG_UA_MICROCODE_CHANGED 6 /* simulate firmware change */ | |
206 | #define SDEBUG_UA_MICROCODE_CHANGED_WO_RESET 7 | |
207 | #define SDEBUG_NUM_UAS 8 | |
cbf67842 | 208 | |
773642d9 | 209 | /* when 1==SDEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this |
1da177e4 LT |
210 | * sector on read commands: */ |
211 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ | |
32f7ef73 | 212 | #define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */ |
1da177e4 | 213 | |
c4837394 DG |
214 | /* SDEBUG_CANQUEUE is the maximum number of commands that can be queued |
215 | * (for response) per submit queue at one time. Can be reduced by max_queue | |
216 | * option. Command responses are not queued when jdelay=0 and ndelay=0. The | |
217 | * per-device DEF_CMD_PER_LUN can be changed via sysfs: | |
218 | * /sys/class/scsi_device/<h:c:t:l>/device/queue_depth | |
219 | * but cannot exceed SDEBUG_CANQUEUE . | |
220 | */ | |
221 | #define SDEBUG_CANQUEUE_WORDS 3 /* a WORD is bits in a long */ | |
222 | #define SDEBUG_CANQUEUE (SDEBUG_CANQUEUE_WORDS * BITS_PER_LONG) | |
fc09acb7 | 223 | #define DEF_CMD_PER_LUN SDEBUG_CANQUEUE |
cbf67842 | 224 | |
b6ff8ca7 DG |
225 | /* UA - Unit Attention; SA - Service Action; SSU - Start Stop Unit */ |
226 | #define F_D_IN 1 /* Data-in command (e.g. READ) */ | |
227 | #define F_D_OUT 2 /* Data-out command (e.g. WRITE) */ | |
fd32119b DG |
228 | #define F_D_OUT_MAYBE 4 /* WRITE SAME, NDOB bit */ |
229 | #define F_D_UNKN 8 | |
b6ff8ca7 DG |
230 | #define F_RL_WLUN_OK 0x10 /* allowed with REPORT LUNS W-LUN */ |
231 | #define F_SKIP_UA 0x20 /* bypass UAs (e.g. INQUIRY command) */ | |
232 | #define F_DELAY_OVERR 0x40 /* for commands like INQUIRY */ | |
233 | #define F_SA_LOW 0x80 /* SA is in cdb byte 1, bits 4 to 0 */ | |
234 | #define F_SA_HIGH 0x100 /* SA is in cdb bytes 8 and 9 */ | |
235 | #define F_INV_OP 0x200 /* invalid opcode (not supported) */ | |
236 | #define F_FAKE_RW 0x400 /* bypass resp_*() when fake_rw set */ | |
237 | #define F_M_ACCESS 0x800 /* media access, reacts to SSU state */ | |
238 | #define F_SSU_DELAY 0x1000 /* SSU command delay (long-ish) */ | |
239 | #define F_SYNC_DELAY 0x2000 /* SYNCHRONIZE CACHE delay */ | |
240 | ||
241 | /* Useful combinations of the above flags */ | |
fd32119b | 242 | #define FF_RESPOND (F_RL_WLUN_OK | F_SKIP_UA | F_DELAY_OVERR) |
46f64e70 | 243 | #define FF_MEDIA_IO (F_M_ACCESS | F_FAKE_RW) |
fd32119b | 244 | #define FF_SA (F_SA_HIGH | F_SA_LOW) |
4f2c8bf6 | 245 | #define F_LONG_DELAY (F_SSU_DELAY | F_SYNC_DELAY) |
fd32119b DG |
246 | |
247 | #define SDEBUG_MAX_PARTS 4 | |
248 | ||
b01f6f83 | 249 | #define SDEBUG_MAX_CMD_LEN 32 |
fd32119b | 250 | |
87c715dc DG |
251 | #define SDEB_XA_NOT_IN_USE XA_MARK_1 |
252 | ||
64e14ece DLM |
253 | /* Zone types (zbcr05 table 25) */ |
254 | enum sdebug_z_type { | |
35dbe2b9 DLM |
255 | ZBC_ZTYPE_CNV = 0x1, |
256 | ZBC_ZTYPE_SWR = 0x2, | |
257 | ZBC_ZTYPE_SWP = 0x3, | |
4a5fc1c6 DLM |
258 | /* ZBC_ZTYPE_SOBR = 0x4, */ |
259 | ZBC_ZTYPE_GAP = 0x5, | |
64e14ece DLM |
260 | }; |
261 | ||
f0d1cf93 DG |
262 | /* enumeration names taken from table 26, zbcr05 */ |
263 | enum sdebug_z_cond { | |
264 | ZBC_NOT_WRITE_POINTER = 0x0, | |
265 | ZC1_EMPTY = 0x1, | |
266 | ZC2_IMPLICIT_OPEN = 0x2, | |
267 | ZC3_EXPLICIT_OPEN = 0x3, | |
268 | ZC4_CLOSED = 0x4, | |
269 | ZC6_READ_ONLY = 0xd, | |
270 | ZC5_FULL = 0xe, | |
271 | ZC7_OFFLINE = 0xf, | |
272 | }; | |
273 | ||
274 | struct sdeb_zone_state { /* ZBC: per zone state */ | |
64e14ece | 275 | enum sdebug_z_type z_type; |
f0d1cf93 | 276 | enum sdebug_z_cond z_cond; |
64e14ece | 277 | bool z_non_seq_resource; |
f0d1cf93 DG |
278 | unsigned int z_size; |
279 | sector_t z_start; | |
280 | sector_t z_wp; | |
281 | }; | |
fd32119b DG |
282 | |
283 | struct sdebug_dev_info { | |
284 | struct list_head dev_list; | |
285 | unsigned int channel; | |
286 | unsigned int target; | |
287 | u64 lun; | |
bf476433 | 288 | uuid_t lu_name; |
fd32119b DG |
289 | struct sdebug_host_info *sdbg_host; |
290 | unsigned long uas_bm[1]; | |
291 | atomic_t num_in_q; | |
fc13638a | 292 | atomic_t stopped; /* 1: by SSU, 2: device start */ |
fd32119b | 293 | bool used; |
f0d1cf93 DG |
294 | |
295 | /* For ZBC devices */ | |
64e14ece | 296 | enum blk_zoned_model zmodel; |
4a5fc1c6 | 297 | unsigned int zcap; |
f0d1cf93 DG |
298 | unsigned int zsize; |
299 | unsigned int zsize_shift; | |
300 | unsigned int nr_zones; | |
aa8fecf9 | 301 | unsigned int nr_conv_zones; |
4a5fc1c6 | 302 | unsigned int nr_seq_zones; |
f0d1cf93 DG |
303 | unsigned int nr_imp_open; |
304 | unsigned int nr_exp_open; | |
305 | unsigned int nr_closed; | |
306 | unsigned int max_open; | |
fc13638a | 307 | ktime_t create_ts; /* time since bootup that this device was created */ |
f0d1cf93 | 308 | struct sdeb_zone_state *zstate; |
fd32119b DG |
309 | }; |
310 | ||
311 | struct sdebug_host_info { | |
312 | struct list_head host_list; | |
87c715dc | 313 | int si_idx; /* sdeb_store_info (per host) xarray index */ |
fd32119b DG |
314 | struct Scsi_Host *shost; |
315 | struct device dev; | |
316 | struct list_head dev_info_list; | |
317 | }; | |
318 | ||
87c715dc DG |
319 | /* There is an xarray of pointers to this struct's objects, one per host */ |
320 | struct sdeb_store_info { | |
321 | rwlock_t macc_lck; /* for atomic media access on this store */ | |
322 | u8 *storep; /* user data storage (ram) */ | |
323 | struct t10_pi_tuple *dif_storep; /* protection info */ | |
324 | void *map_storep; /* provisioning map */ | |
325 | }; | |
326 | ||
fd32119b DG |
327 | #define to_sdebug_host(d) \ |
328 | container_of(d, struct sdebug_host_info, dev) | |
329 | ||
10bde980 | 330 | enum sdeb_defer_type {SDEB_DEFER_NONE = 0, SDEB_DEFER_HRT = 1, |
4a0c6f43 | 331 | SDEB_DEFER_WQ = 2, SDEB_DEFER_POLL = 3}; |
10bde980 | 332 | |
fd32119b DG |
333 | struct sdebug_defer { |
334 | struct hrtimer hrt; | |
335 | struct execute_work ew; | |
4a0c6f43 | 336 | ktime_t cmpl_ts;/* time since boot to complete this cmd */ |
c4837394 DG |
337 | int sqa_idx; /* index of sdebug_queue array */ |
338 | int qc_idx; /* index of sdebug_queued_cmd array within sqa_idx */ | |
c10fa55f | 339 | int hc_idx; /* hostwide tag index */ |
c4837394 | 340 | int issuing_cpu; |
10bde980 DG |
341 | bool init_hrt; |
342 | bool init_wq; | |
4a0c6f43 | 343 | bool init_poll; |
7382f9d8 | 344 | bool aborted; /* true when blk_abort_request() already called */ |
10bde980 | 345 | enum sdeb_defer_type defer_t; |
fd32119b DG |
346 | }; |
347 | ||
348 | struct sdebug_queued_cmd { | |
c4837394 DG |
349 | /* corresponding bit set in in_use_bm[] in owning struct sdebug_queue |
350 | * instance indicates this slot is in use. | |
351 | */ | |
fd32119b DG |
352 | struct sdebug_defer *sd_dp; |
353 | struct scsi_cmnd *a_cmnd; | |
354 | }; | |
355 | ||
c4837394 DG |
356 | struct sdebug_queue { |
357 | struct sdebug_queued_cmd qc_arr[SDEBUG_CANQUEUE]; | |
358 | unsigned long in_use_bm[SDEBUG_CANQUEUE_WORDS]; | |
359 | spinlock_t qc_lock; | |
360 | atomic_t blocked; /* to temporarily stop more being queued */ | |
fd32119b DG |
361 | }; |
362 | ||
c4837394 DG |
363 | static atomic_t sdebug_cmnd_count; /* number of incoming commands */ |
364 | static atomic_t sdebug_completions; /* count of deferred completions */ | |
365 | static atomic_t sdebug_miss_cpus; /* submission + completion cpus differ */ | |
366 | static atomic_t sdebug_a_tsf; /* 'almost task set full' counter */ | |
3a90a63d | 367 | static atomic_t sdeb_inject_pending; |
4a0c6f43 | 368 | static atomic_t sdeb_mq_poll_count; /* bumped when mq_poll returns > 0 */ |
c4837394 | 369 | |
fd32119b | 370 | struct opcode_info_t { |
b01f6f83 DG |
371 | u8 num_attached; /* 0 if this is it (i.e. a leaf); use 0xff */ |
372 | /* for terminating element */ | |
fd32119b DG |
373 | u8 opcode; /* if num_attached > 0, preferred */ |
374 | u16 sa; /* service action */ | |
375 | u32 flags; /* OR-ed set of SDEB_F_* */ | |
376 | int (*pfp)(struct scsi_cmnd *, struct sdebug_dev_info *); | |
377 | const struct opcode_info_t *arrp; /* num_attached elements or NULL */ | |
9a051019 DG |
378 | u8 len_mask[16]; /* len_mask[0]-->cdb_len, then mask for cdb */ |
379 | /* 1 to min(cdb_len, 15); ignore cdb[15...] */ | |
fd32119b DG |
380 | }; |
381 | ||
382 | /* SCSI opcodes (first byte of cdb) of interest mapped onto these indexes */ | |
c2248fc9 DG |
383 | enum sdeb_opcode_index { |
384 | SDEB_I_INVALID_OPCODE = 0, | |
385 | SDEB_I_INQUIRY = 1, | |
386 | SDEB_I_REPORT_LUNS = 2, | |
387 | SDEB_I_REQUEST_SENSE = 3, | |
388 | SDEB_I_TEST_UNIT_READY = 4, | |
389 | SDEB_I_MODE_SENSE = 5, /* 6, 10 */ | |
390 | SDEB_I_MODE_SELECT = 6, /* 6, 10 */ | |
391 | SDEB_I_LOG_SENSE = 7, | |
392 | SDEB_I_READ_CAPACITY = 8, /* 10; 16 is in SA_IN(16) */ | |
393 | SDEB_I_READ = 9, /* 6, 10, 12, 16 */ | |
394 | SDEB_I_WRITE = 10, /* 6, 10, 12, 16 */ | |
395 | SDEB_I_START_STOP = 11, | |
46f64e70 DG |
396 | SDEB_I_SERV_ACT_IN_16 = 12, /* add ...SERV_ACT_IN_12 if needed */ |
397 | SDEB_I_SERV_ACT_OUT_16 = 13, /* add ...SERV_ACT_OUT_12 if needed */ | |
c2248fc9 DG |
398 | SDEB_I_MAINT_IN = 14, |
399 | SDEB_I_MAINT_OUT = 15, | |
c3e2fe92 | 400 | SDEB_I_VERIFY = 16, /* VERIFY(10), VERIFY(16) */ |
481b5e5c | 401 | SDEB_I_VARIABLE_LEN = 17, /* READ(32), WRITE(32), WR_SCAT(32) */ |
c2248fc9 DG |
402 | SDEB_I_RESERVE = 18, /* 6, 10 */ |
403 | SDEB_I_RELEASE = 19, /* 6, 10 */ | |
404 | SDEB_I_ALLOW_REMOVAL = 20, /* PREVENT ALLOW MEDIUM REMOVAL */ | |
405 | SDEB_I_REZERO_UNIT = 21, /* REWIND in SSC */ | |
406 | SDEB_I_ATA_PT = 22, /* 12, 16 */ | |
407 | SDEB_I_SEND_DIAG = 23, | |
408 | SDEB_I_UNMAP = 24, | |
c208556a BVA |
409 | SDEB_I_WRITE_BUFFER = 25, |
410 | SDEB_I_WRITE_SAME = 26, /* 10, 16 */ | |
411 | SDEB_I_SYNC_CACHE = 27, /* 10, 16 */ | |
412 | SDEB_I_COMP_WRITE = 28, | |
ed9f3e25 | 413 | SDEB_I_PRE_FETCH = 29, /* 10, 16 */ |
f0d1cf93 DG |
414 | SDEB_I_ZONE_OUT = 30, /* 0x94+SA; includes no data xfer */ |
415 | SDEB_I_ZONE_IN = 31, /* 0x95+SA; all have data-in */ | |
416 | SDEB_I_LAST_ELEM_P1 = 32, /* keep this last (previous + 1) */ | |
c2248fc9 DG |
417 | }; |
418 | ||
c4837394 | 419 | |
c2248fc9 DG |
420 | static const unsigned char opcode_ind_arr[256] = { |
421 | /* 0x0; 0x0->0x1f: 6 byte cdbs */ | |
422 | SDEB_I_TEST_UNIT_READY, SDEB_I_REZERO_UNIT, 0, SDEB_I_REQUEST_SENSE, | |
423 | 0, 0, 0, 0, | |
424 | SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, 0, | |
425 | 0, 0, SDEB_I_INQUIRY, 0, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, | |
426 | SDEB_I_RELEASE, | |
427 | 0, 0, SDEB_I_MODE_SENSE, SDEB_I_START_STOP, 0, SDEB_I_SEND_DIAG, | |
428 | SDEB_I_ALLOW_REMOVAL, 0, | |
429 | /* 0x20; 0x20->0x3f: 10 byte cdbs */ | |
430 | 0, 0, 0, 0, 0, SDEB_I_READ_CAPACITY, 0, 0, | |
431 | SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, SDEB_I_VERIFY, | |
ed9f3e25 | 432 | 0, 0, 0, 0, SDEB_I_PRE_FETCH, SDEB_I_SYNC_CACHE, 0, 0, |
c2248fc9 DG |
433 | 0, 0, 0, SDEB_I_WRITE_BUFFER, 0, 0, 0, 0, |
434 | /* 0x40; 0x40->0x5f: 10 byte cdbs */ | |
435 | 0, SDEB_I_WRITE_SAME, SDEB_I_UNMAP, 0, 0, 0, 0, 0, | |
436 | 0, 0, 0, 0, 0, SDEB_I_LOG_SENSE, 0, 0, | |
c208556a | 437 | 0, 0, 0, 0, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, |
c2248fc9 DG |
438 | SDEB_I_RELEASE, |
439 | 0, 0, SDEB_I_MODE_SENSE, 0, 0, 0, 0, 0, | |
fd32119b | 440 | /* 0x60; 0x60->0x7d are reserved, 0x7e is "extended cdb" */ |
c2248fc9 DG |
441 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
442 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
443 | 0, SDEB_I_VARIABLE_LEN, | |
444 | /* 0x80; 0x80->0x9f: 16 byte cdbs */ | |
445 | 0, 0, 0, 0, 0, SDEB_I_ATA_PT, 0, 0, | |
c3e2fe92 DG |
446 | SDEB_I_READ, SDEB_I_COMP_WRITE, SDEB_I_WRITE, 0, |
447 | 0, 0, 0, SDEB_I_VERIFY, | |
f0d1cf93 DG |
448 | SDEB_I_PRE_FETCH, SDEB_I_SYNC_CACHE, 0, SDEB_I_WRITE_SAME, |
449 | SDEB_I_ZONE_OUT, SDEB_I_ZONE_IN, 0, 0, | |
46f64e70 | 450 | 0, 0, 0, 0, 0, 0, SDEB_I_SERV_ACT_IN_16, SDEB_I_SERV_ACT_OUT_16, |
c2248fc9 DG |
451 | /* 0xa0; 0xa0->0xbf: 12 byte cdbs */ |
452 | SDEB_I_REPORT_LUNS, SDEB_I_ATA_PT, 0, SDEB_I_MAINT_IN, | |
453 | SDEB_I_MAINT_OUT, 0, 0, 0, | |
46f64e70 DG |
454 | SDEB_I_READ, 0 /* SDEB_I_SERV_ACT_OUT_12 */, SDEB_I_WRITE, |
455 | 0 /* SDEB_I_SERV_ACT_IN_12 */, 0, 0, 0, 0, | |
c2248fc9 DG |
456 | 0, 0, 0, 0, 0, 0, 0, 0, |
457 | 0, 0, 0, 0, 0, 0, 0, 0, | |
458 | /* 0xc0; 0xc0->0xff: vendor specific */ | |
459 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
460 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
461 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
462 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
463 | }; | |
464 | ||
80c49563 DG |
465 | /* |
466 | * The following "response" functions return the SCSI mid-level's 4 byte | |
467 | * tuple-in-an-int. To handle commands with an IMMED bit, for a faster | |
468 | * command completion, they can mask their return value with | |
469 | * SDEG_RES_IMMED_MASK . | |
470 | */ | |
471 | #define SDEG_RES_IMMED_MASK 0x40000000 | |
472 | ||
c2248fc9 DG |
473 | static int resp_inquiry(struct scsi_cmnd *, struct sdebug_dev_info *); |
474 | static int resp_report_luns(struct scsi_cmnd *, struct sdebug_dev_info *); | |
475 | static int resp_requests(struct scsi_cmnd *, struct sdebug_dev_info *); | |
476 | static int resp_mode_sense(struct scsi_cmnd *, struct sdebug_dev_info *); | |
477 | static int resp_mode_select(struct scsi_cmnd *, struct sdebug_dev_info *); | |
478 | static int resp_log_sense(struct scsi_cmnd *, struct sdebug_dev_info *); | |
479 | static int resp_readcap(struct scsi_cmnd *, struct sdebug_dev_info *); | |
480 | static int resp_read_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); | |
481 | static int resp_write_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); | |
481b5e5c | 482 | static int resp_write_scat(struct scsi_cmnd *, struct sdebug_dev_info *); |
c2248fc9 DG |
483 | static int resp_start_stop(struct scsi_cmnd *, struct sdebug_dev_info *); |
484 | static int resp_readcap16(struct scsi_cmnd *, struct sdebug_dev_info *); | |
485 | static int resp_get_lba_status(struct scsi_cmnd *, struct sdebug_dev_info *); | |
486 | static int resp_report_tgtpgs(struct scsi_cmnd *, struct sdebug_dev_info *); | |
487 | static int resp_unmap(struct scsi_cmnd *, struct sdebug_dev_info *); | |
38d5c833 DG |
488 | static int resp_rsup_opcodes(struct scsi_cmnd *, struct sdebug_dev_info *); |
489 | static int resp_rsup_tmfs(struct scsi_cmnd *, struct sdebug_dev_info *); | |
c3e2fe92 | 490 | static int resp_verify(struct scsi_cmnd *, struct sdebug_dev_info *); |
c2248fc9 DG |
491 | static int resp_write_same_10(struct scsi_cmnd *, struct sdebug_dev_info *); |
492 | static int resp_write_same_16(struct scsi_cmnd *, struct sdebug_dev_info *); | |
38d5c833 | 493 | static int resp_comp_write(struct scsi_cmnd *, struct sdebug_dev_info *); |
acafd0b9 | 494 | static int resp_write_buffer(struct scsi_cmnd *, struct sdebug_dev_info *); |
80c49563 | 495 | static int resp_sync_cache(struct scsi_cmnd *, struct sdebug_dev_info *); |
ed9f3e25 | 496 | static int resp_pre_fetch(struct scsi_cmnd *, struct sdebug_dev_info *); |
f0d1cf93 DG |
497 | static int resp_report_zones(struct scsi_cmnd *, struct sdebug_dev_info *); |
498 | static int resp_open_zone(struct scsi_cmnd *, struct sdebug_dev_info *); | |
499 | static int resp_close_zone(struct scsi_cmnd *, struct sdebug_dev_info *); | |
500 | static int resp_finish_zone(struct scsi_cmnd *, struct sdebug_dev_info *); | |
501 | static int resp_rwp_zone(struct scsi_cmnd *, struct sdebug_dev_info *); | |
c2248fc9 | 502 | |
87c715dc DG |
503 | static int sdebug_do_add_host(bool mk_new_store); |
504 | static int sdebug_add_host_helper(int per_host_idx); | |
505 | static void sdebug_do_remove_host(bool the_end); | |
506 | static int sdebug_add_store(void); | |
507 | static void sdebug_erase_store(int idx, struct sdeb_store_info *sip); | |
508 | static void sdebug_erase_all_stores(bool apart_from_first); | |
509 | ||
46f64e70 DG |
510 | /* |
511 | * The following are overflow arrays for cdbs that "hit" the same index in | |
512 | * the opcode_info_arr array. The most time sensitive (or commonly used) cdb | |
513 | * should be placed in opcode_info_arr[], the others should be placed here. | |
514 | */ | |
515 | static const struct opcode_info_t msense_iarr[] = { | |
c2248fc9 DG |
516 | {0, 0x1a, 0, F_D_IN, NULL, NULL, |
517 | {6, 0xe8, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
518 | }; | |
519 | ||
46f64e70 | 520 | static const struct opcode_info_t mselect_iarr[] = { |
c2248fc9 DG |
521 | {0, 0x15, 0, F_D_OUT, NULL, NULL, |
522 | {6, 0xf1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
523 | }; | |
524 | ||
46f64e70 DG |
525 | static const struct opcode_info_t read_iarr[] = { |
526 | {0, 0x28, 0, F_D_IN | FF_MEDIA_IO, resp_read_dt0, NULL,/* READ(10) */ | |
b7e24581 | 527 | {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0, 0, |
c2248fc9 | 528 | 0, 0, 0, 0} }, |
46f64e70 | 529 | {0, 0x8, 0, F_D_IN | FF_MEDIA_IO, resp_read_dt0, NULL, /* READ(6) */ |
c2248fc9 | 530 | {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
46f64e70 | 531 | {0, 0xa8, 0, F_D_IN | FF_MEDIA_IO, resp_read_dt0, NULL,/* READ(12) */ |
b7e24581 | 532 | {12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xbf, |
c2248fc9 DG |
533 | 0xc7, 0, 0, 0, 0} }, |
534 | }; | |
535 | ||
46f64e70 DG |
536 | static const struct opcode_info_t write_iarr[] = { |
537 | {0, 0x2a, 0, F_D_OUT | FF_MEDIA_IO, resp_write_dt0, /* WRITE(10) */ | |
538 | NULL, {10, 0xfb, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, | |
539 | 0, 0, 0, 0, 0, 0} }, | |
540 | {0, 0xa, 0, F_D_OUT | FF_MEDIA_IO, resp_write_dt0, /* WRITE(6) */ | |
541 | NULL, {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, | |
542 | 0, 0, 0} }, | |
543 | {0, 0xaa, 0, F_D_OUT | FF_MEDIA_IO, resp_write_dt0, /* WRITE(12) */ | |
544 | NULL, {12, 0xfb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
545 | 0xbf, 0xc7, 0, 0, 0, 0} }, | |
c2248fc9 DG |
546 | }; |
547 | ||
c3e2fe92 DG |
548 | static const struct opcode_info_t verify_iarr[] = { |
549 | {0, 0x2f, 0, F_D_OUT_MAYBE | FF_MEDIA_IO, resp_verify,/* VERIFY(10) */ | |
550 | NULL, {10, 0xf7, 0xff, 0xff, 0xff, 0xff, 0xbf, 0xff, 0xff, 0xc7, | |
551 | 0, 0, 0, 0, 0, 0} }, | |
552 | }; | |
553 | ||
46f64e70 | 554 | static const struct opcode_info_t sa_in_16_iarr[] = { |
c2248fc9 DG |
555 | {0, 0x9e, 0x12, F_SA_LOW | F_D_IN, resp_get_lba_status, NULL, |
556 | {16, 0x12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
46f64e70 | 557 | 0xff, 0xff, 0xff, 0, 0xc7} }, /* GET LBA STATUS(16) */ |
c2248fc9 DG |
558 | }; |
559 | ||
46f64e70 DG |
560 | static const struct opcode_info_t vl_iarr[] = { /* VARIABLE LENGTH */ |
561 | {0, 0x7f, 0xb, F_SA_HIGH | F_D_OUT | FF_MEDIA_IO, resp_write_dt0, | |
b7e24581 | 562 | NULL, {32, 0xc7, 0, 0, 0, 0, 0x3f, 0x18, 0x0, 0xb, 0xfa, |
c2248fc9 | 563 | 0, 0xff, 0xff, 0xff, 0xff} }, /* WRITE(32) */ |
481b5e5c DG |
564 | {0, 0x7f, 0x11, F_SA_HIGH | F_D_OUT | FF_MEDIA_IO, resp_write_scat, |
565 | NULL, {32, 0xc7, 0, 0, 0, 0, 0x3f, 0x18, 0x0, 0x11, 0xf8, | |
566 | 0, 0xff, 0xff, 0x0, 0x0} }, /* WRITE SCATTERED(32) */ | |
c2248fc9 DG |
567 | }; |
568 | ||
46f64e70 | 569 | static const struct opcode_info_t maint_in_iarr[] = { /* MAINT IN */ |
38d5c833 | 570 | {0, 0xa3, 0xc, F_SA_LOW | F_D_IN, resp_rsup_opcodes, NULL, |
c2248fc9 | 571 | {12, 0xc, 0x87, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, |
46f64e70 | 572 | 0xc7, 0, 0, 0, 0} }, /* REPORT SUPPORTED OPERATION CODES */ |
38d5c833 | 573 | {0, 0xa3, 0xd, F_SA_LOW | F_D_IN, resp_rsup_tmfs, NULL, |
c2248fc9 | 574 | {12, 0xd, 0x80, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, |
46f64e70 | 575 | 0, 0} }, /* REPORTED SUPPORTED TASK MANAGEMENT FUNCTIONS */ |
c2248fc9 DG |
576 | }; |
577 | ||
46f64e70 DG |
578 | static const struct opcode_info_t write_same_iarr[] = { |
579 | {0, 0x93, 0, F_D_OUT_MAYBE | FF_MEDIA_IO, resp_write_same_16, NULL, | |
c2248fc9 | 580 | {16, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
46f64e70 | 581 | 0xff, 0xff, 0xff, 0x3f, 0xc7} }, /* WRITE SAME(16) */ |
c2248fc9 DG |
582 | }; |
583 | ||
46f64e70 DG |
584 | static const struct opcode_info_t reserve_iarr[] = { |
585 | {0, 0x16, 0, F_D_OUT, NULL, NULL, /* RESERVE(6) */ | |
c2248fc9 DG |
586 | {6, 0x1f, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
587 | }; | |
588 | ||
46f64e70 DG |
589 | static const struct opcode_info_t release_iarr[] = { |
590 | {0, 0x17, 0, F_D_OUT, NULL, NULL, /* RELEASE(6) */ | |
c2248fc9 DG |
591 | {6, 0x1f, 0xff, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
592 | }; | |
593 | ||
80c49563 | 594 | static const struct opcode_info_t sync_cache_iarr[] = { |
4f2c8bf6 | 595 | {0, 0x91, 0, F_SYNC_DELAY | F_M_ACCESS, resp_sync_cache, NULL, |
80c49563 DG |
596 | {16, 0x6, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
597 | 0xff, 0xff, 0xff, 0xff, 0x3f, 0xc7} }, /* SYNC_CACHE (16) */ | |
598 | }; | |
599 | ||
ed9f3e25 | 600 | static const struct opcode_info_t pre_fetch_iarr[] = { |
b6ff8ca7 | 601 | {0, 0x90, 0, F_SYNC_DELAY | FF_MEDIA_IO, resp_pre_fetch, NULL, |
ed9f3e25 DG |
602 | {16, 0x2, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
603 | 0xff, 0xff, 0xff, 0xff, 0x3f, 0xc7} }, /* PRE-FETCH (16) */ | |
604 | }; | |
605 | ||
f0d1cf93 | 606 | static const struct opcode_info_t zone_out_iarr[] = { /* ZONE OUT(16) */ |
b6ff8ca7 | 607 | {0, 0x94, 0x1, F_SA_LOW | F_M_ACCESS, resp_close_zone, NULL, |
f0d1cf93 DG |
608 | {16, 0x1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
609 | 0xff, 0, 0, 0xff, 0xff, 0x1, 0xc7} }, /* CLOSE ZONE */ | |
b6ff8ca7 | 610 | {0, 0x94, 0x2, F_SA_LOW | F_M_ACCESS, resp_finish_zone, NULL, |
f0d1cf93 DG |
611 | {16, 0x2, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
612 | 0xff, 0, 0, 0xff, 0xff, 0x1, 0xc7} }, /* FINISH ZONE */ | |
b6ff8ca7 | 613 | {0, 0x94, 0x4, F_SA_LOW | F_M_ACCESS, resp_rwp_zone, NULL, |
f0d1cf93 DG |
614 | {16, 0x4, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
615 | 0xff, 0, 0, 0xff, 0xff, 0x1, 0xc7} }, /* RESET WRITE POINTER */ | |
616 | }; | |
617 | ||
618 | static const struct opcode_info_t zone_in_iarr[] = { /* ZONE IN(16) */ | |
b6ff8ca7 | 619 | {0, 0x95, 0x6, F_SA_LOW | F_D_IN | F_M_ACCESS, NULL, NULL, |
f0d1cf93 DG |
620 | {16, 0x6, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
621 | 0xff, 0xff, 0xff, 0xff, 0x3f, 0xc7} }, /* REPORT ZONES */ | |
622 | }; | |
623 | ||
c2248fc9 DG |
624 | |
625 | /* This array is accessed via SDEB_I_* values. Make sure all are mapped, | |
626 | * plus the terminating elements for logic that scans this table such as | |
627 | * REPORT SUPPORTED OPERATION CODES. */ | |
ed9f3e25 | 628 | static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEM_P1 + 1] = { |
c2248fc9 | 629 | /* 0 */ |
46f64e70 | 630 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* unknown opcodes */ |
c2248fc9 | 631 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
46f64e70 | 632 | {0, 0x12, 0, FF_RESPOND | F_D_IN, resp_inquiry, NULL, /* INQUIRY */ |
c2248fc9 DG |
633 | {6, 0xe3, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
634 | {0, 0xa0, 0, FF_RESPOND | F_D_IN, resp_report_luns, NULL, | |
635 | {12, 0xe3, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, | |
46f64e70 | 636 | 0, 0} }, /* REPORT LUNS */ |
c2248fc9 DG |
637 | {0, 0x3, 0, FF_RESPOND | F_D_IN, resp_requests, NULL, |
638 | {6, 0xe1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
639 | {0, 0x0, 0, F_M_ACCESS | F_RL_WLUN_OK, NULL, NULL,/* TEST UNIT READY */ | |
640 | {6, 0, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
46f64e70 DG |
641 | /* 5 */ |
642 | {ARRAY_SIZE(msense_iarr), 0x5a, 0, F_D_IN, /* MODE SENSE(10) */ | |
643 | resp_mode_sense, msense_iarr, {10, 0xf8, 0xff, 0xff, 0, 0, 0, | |
644 | 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, | |
645 | {ARRAY_SIZE(mselect_iarr), 0x55, 0, F_D_OUT, /* MODE SELECT(10) */ | |
646 | resp_mode_select, mselect_iarr, {10, 0xf1, 0, 0, 0, 0, 0, 0xff, | |
647 | 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, | |
648 | {0, 0x4d, 0, F_D_IN, resp_log_sense, NULL, /* LOG SENSE */ | |
c2248fc9 DG |
649 | {10, 0xe3, 0xff, 0xff, 0, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, |
650 | 0, 0, 0} }, | |
46f64e70 | 651 | {0, 0x25, 0, F_D_IN, resp_readcap, NULL, /* READ CAPACITY(10) */ |
c2248fc9 DG |
652 | {10, 0xe1, 0xff, 0xff, 0xff, 0xff, 0, 0, 0x1, 0xc7, 0, 0, 0, 0, |
653 | 0, 0} }, | |
46f64e70 DG |
654 | {ARRAY_SIZE(read_iarr), 0x88, 0, F_D_IN | FF_MEDIA_IO, /* READ(16) */ |
655 | resp_read_dt0, read_iarr, {16, 0xfe, 0xff, 0xff, 0xff, 0xff, | |
656 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7} }, | |
c2248fc9 | 657 | /* 10 */ |
46f64e70 DG |
658 | {ARRAY_SIZE(write_iarr), 0x8a, 0, F_D_OUT | FF_MEDIA_IO, |
659 | resp_write_dt0, write_iarr, /* WRITE(16) */ | |
660 | {16, 0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
80c49563 | 661 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7} }, |
4f2c8bf6 | 662 | {0, 0x1b, 0, F_SSU_DELAY, resp_start_stop, NULL,/* START STOP UNIT */ |
c2248fc9 | 663 | {6, 0x1, 0, 0xf, 0xf7, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
46f64e70 DG |
664 | {ARRAY_SIZE(sa_in_16_iarr), 0x9e, 0x10, F_SA_LOW | F_D_IN, |
665 | resp_readcap16, sa_in_16_iarr, /* SA_IN(16), READ CAPACITY(16) */ | |
666 | {16, 0x10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
667 | 0xff, 0xff, 0xff, 0xff, 0x1, 0xc7} }, | |
481b5e5c DG |
668 | {0, 0x9f, 0x12, F_SA_LOW | F_D_OUT | FF_MEDIA_IO, resp_write_scat, |
669 | NULL, {16, 0x12, 0xf9, 0x0, 0xff, 0xff, 0, 0, 0xff, 0xff, 0xff, | |
670 | 0xff, 0xff, 0xff, 0xff, 0xc7} }, /* SA_OUT(16), WRITE SCAT(16) */ | |
46f64e70 DG |
671 | {ARRAY_SIZE(maint_in_iarr), 0xa3, 0xa, F_SA_LOW | F_D_IN, |
672 | resp_report_tgtpgs, /* MAINT IN, REPORT TARGET PORT GROUPS */ | |
673 | maint_in_iarr, {12, 0xea, 0, 0, 0, 0, 0xff, 0xff, 0xff, | |
674 | 0xff, 0, 0xc7, 0, 0, 0, 0} }, | |
675 | /* 15 */ | |
c2248fc9 DG |
676 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* MAINT OUT */ |
677 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
c3e2fe92 DG |
678 | {ARRAY_SIZE(verify_iarr), 0x8f, 0, |
679 | F_D_OUT_MAYBE | FF_MEDIA_IO, resp_verify, /* VERIFY(16) */ | |
680 | verify_iarr, {16, 0xf6, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
681 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xc7} }, | |
46f64e70 DG |
682 | {ARRAY_SIZE(vl_iarr), 0x7f, 0x9, F_SA_HIGH | F_D_IN | FF_MEDIA_IO, |
683 | resp_read_dt0, vl_iarr, /* VARIABLE LENGTH, READ(32) */ | |
684 | {32, 0xc7, 0, 0, 0, 0, 0x3f, 0x18, 0x0, 0x9, 0xfe, 0, 0xff, 0xff, | |
685 | 0xff, 0xff} }, | |
686 | {ARRAY_SIZE(reserve_iarr), 0x56, 0, F_D_OUT, | |
687 | NULL, reserve_iarr, /* RESERVE(10) <no response function> */ | |
c2248fc9 DG |
688 | {10, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, |
689 | 0} }, | |
46f64e70 DG |
690 | {ARRAY_SIZE(release_iarr), 0x57, 0, F_D_OUT, |
691 | NULL, release_iarr, /* RELEASE(10) <no response function> */ | |
c2248fc9 DG |
692 | {10, 0x13, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, |
693 | 0} }, | |
694 | /* 20 */ | |
f7f9f26b DG |
695 | {0, 0x1e, 0, 0, NULL, NULL, /* ALLOW REMOVAL */ |
696 | {6, 0, 0, 0, 0x3, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
c2248fc9 DG |
697 | {0, 0x1, 0, 0, resp_start_stop, NULL, /* REWIND ?? */ |
698 | {6, 0x1, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
699 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* ATA_PT */ | |
700 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
701 | {0, 0x1d, F_D_OUT, 0, NULL, NULL, /* SEND DIAGNOSTIC */ | |
702 | {6, 0xf7, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
46f64e70 | 703 | {0, 0x42, 0, F_D_OUT | FF_MEDIA_IO, resp_unmap, NULL, /* UNMAP */ |
b7e24581 | 704 | {10, 0x1, 0, 0, 0, 0, 0x3f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, |
46f64e70 | 705 | /* 25 */ |
acafd0b9 EM |
706 | {0, 0x3b, 0, F_D_OUT_MAYBE, resp_write_buffer, NULL, |
707 | {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, | |
708 | 0, 0, 0, 0} }, /* WRITE_BUFFER */ | |
46f64e70 DG |
709 | {ARRAY_SIZE(write_same_iarr), 0x41, 0, F_D_OUT_MAYBE | FF_MEDIA_IO, |
710 | resp_write_same_10, write_same_iarr, /* WRITE SAME(10) */ | |
711 | {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0, | |
712 | 0, 0, 0, 0, 0} }, | |
4f2c8bf6 | 713 | {ARRAY_SIZE(sync_cache_iarr), 0x35, 0, F_SYNC_DELAY | F_M_ACCESS, |
80c49563 | 714 | resp_sync_cache, sync_cache_iarr, |
b7e24581 | 715 | {10, 0x7, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0, 0, |
80c49563 | 716 | 0, 0, 0, 0} }, /* SYNC_CACHE (10) */ |
46f64e70 | 717 | {0, 0x89, 0, F_D_OUT | FF_MEDIA_IO, resp_comp_write, NULL, |
c2248fc9 | 718 | {16, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, |
b7e24581 | 719 | 0, 0xff, 0x3f, 0xc7} }, /* COMPARE AND WRITE */ |
b6ff8ca7 | 720 | {ARRAY_SIZE(pre_fetch_iarr), 0x34, 0, F_SYNC_DELAY | FF_MEDIA_IO, |
ed9f3e25 DG |
721 | resp_pre_fetch, pre_fetch_iarr, |
722 | {10, 0x2, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0, 0, | |
723 | 0, 0, 0, 0} }, /* PRE-FETCH (10) */ | |
c2248fc9 | 724 | |
ed9f3e25 | 725 | /* 30 */ |
b6ff8ca7 | 726 | {ARRAY_SIZE(zone_out_iarr), 0x94, 0x3, F_SA_LOW | F_M_ACCESS, |
f0d1cf93 DG |
727 | resp_open_zone, zone_out_iarr, /* ZONE_OUT(16), OPEN ZONE) */ |
728 | {16, 0x3 /* SA */, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
729 | 0xff, 0xff, 0x0, 0x0, 0xff, 0xff, 0x1, 0xc7} }, | |
b6ff8ca7 | 730 | {ARRAY_SIZE(zone_in_iarr), 0x95, 0x0, F_SA_LOW | F_M_ACCESS, |
f0d1cf93 DG |
731 | resp_report_zones, zone_in_iarr, /* ZONE_IN(16), REPORT ZONES) */ |
732 | {16, 0x0 /* SA */, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
733 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xbf, 0xc7} }, | |
734 | /* sentinel */ | |
c2248fc9 DG |
735 | {0xff, 0, 0, 0, NULL, NULL, /* terminating element */ |
736 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
737 | }; | |
738 | ||
f19fe8f3 | 739 | static int sdebug_num_hosts; |
87c715dc | 740 | static int sdebug_add_host = DEF_NUM_HOST; /* in sysfs this is relative */ |
773642d9 | 741 | static int sdebug_ato = DEF_ATO; |
9b760fd8 | 742 | static int sdebug_cdb_len = DEF_CDB_LEN; |
c2206098 | 743 | static int sdebug_jdelay = DEF_JDELAY; /* if > 0 then unit is jiffies */ |
9267e0eb | 744 | static int sdebug_dev_size_mb = DEF_DEV_SIZE_PRE_INIT; |
773642d9 DG |
745 | static int sdebug_dif = DEF_DIF; |
746 | static int sdebug_dix = DEF_DIX; | |
747 | static int sdebug_dsense = DEF_D_SENSE; | |
748 | static int sdebug_every_nth = DEF_EVERY_NTH; | |
749 | static int sdebug_fake_rw = DEF_FAKE_RW; | |
750 | static unsigned int sdebug_guard = DEF_GUARD; | |
c10fa55f | 751 | static int sdebug_host_max_queue; /* per host */ |
773642d9 DG |
752 | static int sdebug_lowest_aligned = DEF_LOWEST_ALIGNED; |
753 | static int sdebug_max_luns = DEF_MAX_LUNS; | |
c4837394 | 754 | static int sdebug_max_queue = SDEBUG_CANQUEUE; /* per submit queue */ |
d9da891a LO |
755 | static unsigned int sdebug_medium_error_start = OPT_MEDIUM_ERR_ADDR; |
756 | static int sdebug_medium_error_count = OPT_MEDIUM_ERR_NUM; | |
cbf67842 | 757 | static atomic_t retired_max_queue; /* if > 0 then was prior max_queue */ |
c2206098 | 758 | static int sdebug_ndelay = DEF_NDELAY; /* if > 0 then unit is nanoseconds */ |
773642d9 DG |
759 | static int sdebug_no_lun_0 = DEF_NO_LUN_0; |
760 | static int sdebug_no_uld; | |
761 | static int sdebug_num_parts = DEF_NUM_PARTS; | |
762 | static int sdebug_num_tgts = DEF_NUM_TGTS; /* targets per host */ | |
763 | static int sdebug_opt_blks = DEF_OPT_BLKS; | |
764 | static int sdebug_opts = DEF_OPTS; | |
765 | static int sdebug_physblk_exp = DEF_PHYSBLK_EXP; | |
86e6828a | 766 | static int sdebug_opt_xferlen_exp = DEF_OPT_XFERLEN_EXP; |
b01f6f83 | 767 | static int sdebug_ptype = DEF_PTYPE; /* SCSI peripheral device type */ |
773642d9 DG |
768 | static int sdebug_scsi_level = DEF_SCSI_LEVEL; |
769 | static int sdebug_sector_size = DEF_SECTOR_SIZE; | |
fc13638a | 770 | static int sdeb_tur_ms_to_ready = DEF_TUR_MS_TO_READY; |
773642d9 DG |
771 | static int sdebug_virtual_gb = DEF_VIRTUAL_GB; |
772 | static int sdebug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; | |
773 | static unsigned int sdebug_lbpu = DEF_LBPU; | |
774 | static unsigned int sdebug_lbpws = DEF_LBPWS; | |
775 | static unsigned int sdebug_lbpws10 = DEF_LBPWS10; | |
776 | static unsigned int sdebug_lbprz = DEF_LBPRZ; | |
777 | static unsigned int sdebug_unmap_alignment = DEF_UNMAP_ALIGNMENT; | |
778 | static unsigned int sdebug_unmap_granularity = DEF_UNMAP_GRANULARITY; | |
779 | static unsigned int sdebug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS; | |
780 | static unsigned int sdebug_unmap_max_desc = DEF_UNMAP_MAX_DESC; | |
781 | static unsigned int sdebug_write_same_length = DEF_WRITESAME_LENGTH; | |
09ba24c1 | 782 | static int sdebug_uuid_ctl = DEF_UUID_CTL; |
0c4bc91d | 783 | static bool sdebug_random = DEF_RANDOM; |
87c715dc | 784 | static bool sdebug_per_host_store = DEF_PER_HOST_STORE; |
773642d9 DG |
785 | static bool sdebug_removable = DEF_REMOVABLE; |
786 | static bool sdebug_clustering; | |
787 | static bool sdebug_host_lock = DEF_HOST_LOCK; | |
788 | static bool sdebug_strict = DEF_STRICT; | |
817fd66b | 789 | static bool sdebug_any_injecting_opt; |
7109f370 | 790 | static bool sdebug_no_rwlock; |
773642d9 | 791 | static bool sdebug_verbose; |
f46eb0e9 | 792 | static bool have_dif_prot; |
4f2c8bf6 | 793 | static bool write_since_sync; |
c4837394 | 794 | static bool sdebug_statistics = DEF_STATISTICS; |
9447b6ce | 795 | static bool sdebug_wp; |
9267e0eb DG |
796 | /* Following enum: 0: no zbc, def; 1: host aware; 2: host managed */ |
797 | static enum blk_zoned_model sdeb_zbc_model = BLK_ZONED_NONE; | |
798 | static char *sdeb_zbc_model_s; | |
1da177e4 | 799 | |
ad0c7775 DG |
800 | enum sam_lun_addr_method {SAM_LUN_AM_PERIPHERAL = 0x0, |
801 | SAM_LUN_AM_FLAT = 0x1, | |
802 | SAM_LUN_AM_LOGICAL_UNIT = 0x2, | |
803 | SAM_LUN_AM_EXTENDED = 0x3}; | |
804 | static enum sam_lun_addr_method sdebug_lun_am = SAM_LUN_AM_PERIPHERAL; | |
805 | static int sdebug_lun_am_i = (int)SAM_LUN_AM_PERIPHERAL; | |
806 | ||
c65b1445 | 807 | static unsigned int sdebug_store_sectors; |
1da177e4 LT |
808 | static sector_t sdebug_capacity; /* in sectors */ |
809 | ||
810 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages | |
811 | may still need them */ | |
812 | static int sdebug_heads; /* heads per disk */ | |
813 | static int sdebug_cylinders_per; /* cylinders per surface */ | |
814 | static int sdebug_sectors_per; /* sectors per cylinder */ | |
815 | ||
1da177e4 LT |
816 | static LIST_HEAD(sdebug_host_list); |
817 | static DEFINE_SPINLOCK(sdebug_host_list_lock); | |
818 | ||
87c715dc DG |
819 | static struct xarray per_store_arr; |
820 | static struct xarray *per_store_ap = &per_store_arr; | |
821 | static int sdeb_first_idx = -1; /* invalid index ==> none created */ | |
822 | static int sdeb_most_recent_idx = -1; | |
823 | static DEFINE_RWLOCK(sdeb_fake_rw_lck); /* need a RW lock when fake_rw=1 */ | |
1da177e4 | 824 | |
44d92694 | 825 | static unsigned long map_size; |
cbf67842 DG |
826 | static int num_aborts; |
827 | static int num_dev_resets; | |
828 | static int num_target_resets; | |
829 | static int num_bus_resets; | |
830 | static int num_host_resets; | |
c6a44287 MP |
831 | static int dix_writes; |
832 | static int dix_reads; | |
833 | static int dif_errors; | |
1da177e4 | 834 | |
f0d1cf93 | 835 | /* ZBC global data */ |
64e14ece | 836 | static bool sdeb_zbc_in_use; /* true for host-aware and host-managed disks */ |
4a5fc1c6 | 837 | static int sdeb_zbc_zone_cap_mb; |
98e0a689 | 838 | static int sdeb_zbc_zone_size_mb; |
380603a5 | 839 | static int sdeb_zbc_max_open = DEF_ZBC_MAX_OPEN_ZONES; |
aa8fecf9 | 840 | static int sdeb_zbc_nr_conv = DEF_ZBC_NR_CONV_ZONES; |
f0d1cf93 | 841 | |
c4837394 | 842 | static int submit_queues = DEF_SUBMIT_QUEUES; /* > 1 for multi-queue (mq) */ |
c4b57d89 | 843 | static int poll_queues; /* iouring iopoll interface.*/ |
c4837394 | 844 | static struct sdebug_queue *sdebug_q_arr; /* ptr to array of submit queues */ |
fd32119b | 845 | |
1da177e4 | 846 | static DEFINE_RWLOCK(atomic_rw); |
87c715dc DG |
847 | static DEFINE_RWLOCK(atomic_rw2); |
848 | ||
849 | static rwlock_t *ramdisk_lck_a[2]; | |
1da177e4 | 850 | |
cbf67842 DG |
851 | static char sdebug_proc_name[] = MY_NAME; |
852 | static const char *my_name = MY_NAME; | |
1da177e4 | 853 | |
1da177e4 LT |
854 | static struct bus_type pseudo_lld_bus; |
855 | ||
856 | static struct device_driver sdebug_driverfs_driver = { | |
857 | .name = sdebug_proc_name, | |
858 | .bus = &pseudo_lld_bus, | |
1da177e4 LT |
859 | }; |
860 | ||
861 | static const int check_condition_result = | |
464a00c9 | 862 | SAM_STAT_CHECK_CONDITION; |
1da177e4 | 863 | |
c6a44287 | 864 | static const int illegal_condition_result = |
464a00c9 | 865 | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; |
c6a44287 | 866 | |
cbf67842 | 867 | static const int device_qfull_result = |
7d5a129b | 868 | (DID_ABORT << 16) | SAM_STAT_TASK_SET_FULL; |
cbf67842 | 869 | |
ed9f3e25 DG |
870 | static const int condition_met_result = SAM_STAT_CONDITION_MET; |
871 | ||
fd32119b | 872 | |
760f3b03 DG |
873 | /* Only do the extra work involved in logical block provisioning if one or |
874 | * more of the lbpu, lbpws or lbpws10 parameters are given and we are doing | |
875 | * real reads and writes (i.e. not skipping them for speed). | |
876 | */ | |
877 | static inline bool scsi_debug_lbp(void) | |
fd32119b DG |
878 | { |
879 | return 0 == sdebug_fake_rw && | |
880 | (sdebug_lbpu || sdebug_lbpws || sdebug_lbpws10); | |
881 | } | |
c65b1445 | 882 | |
87c715dc DG |
883 | static void *lba2fake_store(struct sdeb_store_info *sip, |
884 | unsigned long long lba) | |
14faa944 | 885 | { |
87c715dc | 886 | struct sdeb_store_info *lsip = sip; |
14faa944 | 887 | |
87c715dc DG |
888 | lba = do_div(lba, sdebug_store_sectors); |
889 | if (!sip || !sip->storep) { | |
890 | WARN_ON_ONCE(true); | |
891 | lsip = xa_load(per_store_ap, 0); /* should never be NULL */ | |
892 | } | |
893 | return lsip->storep + lba * sdebug_sector_size; | |
14faa944 AM |
894 | } |
895 | ||
87c715dc DG |
896 | static struct t10_pi_tuple *dif_store(struct sdeb_store_info *sip, |
897 | sector_t sector) | |
14faa944 | 898 | { |
49413112 | 899 | sector = sector_div(sector, sdebug_store_sectors); |
14faa944 | 900 | |
87c715dc | 901 | return sip->dif_storep + sector; |
14faa944 AM |
902 | } |
903 | ||
8dea0d02 FT |
904 | static void sdebug_max_tgts_luns(void) |
905 | { | |
906 | struct sdebug_host_info *sdbg_host; | |
907 | struct Scsi_Host *hpnt; | |
908 | ||
909 | spin_lock(&sdebug_host_list_lock); | |
910 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
911 | hpnt = sdbg_host->shost; | |
912 | if ((hpnt->this_id >= 0) && | |
773642d9 DG |
913 | (sdebug_num_tgts > hpnt->this_id)) |
914 | hpnt->max_id = sdebug_num_tgts + 1; | |
8dea0d02 | 915 | else |
773642d9 DG |
916 | hpnt->max_id = sdebug_num_tgts; |
917 | /* sdebug_max_luns; */ | |
f2d3fd29 | 918 | hpnt->max_lun = SCSI_W_LUN_REPORT_LUNS + 1; |
8dea0d02 FT |
919 | } |
920 | spin_unlock(&sdebug_host_list_lock); | |
921 | } | |
922 | ||
22017ed2 DG |
923 | enum sdeb_cmd_data {SDEB_IN_DATA = 0, SDEB_IN_CDB = 1}; |
924 | ||
925 | /* Set in_bit to -1 to indicate no bit position of invalid field */ | |
fd32119b DG |
926 | static void mk_sense_invalid_fld(struct scsi_cmnd *scp, |
927 | enum sdeb_cmd_data c_d, | |
928 | int in_byte, int in_bit) | |
22017ed2 DG |
929 | { |
930 | unsigned char *sbuff; | |
931 | u8 sks[4]; | |
932 | int sl, asc; | |
933 | ||
934 | sbuff = scp->sense_buffer; | |
935 | if (!sbuff) { | |
936 | sdev_printk(KERN_ERR, scp->device, | |
937 | "%s: sense_buffer is NULL\n", __func__); | |
938 | return; | |
939 | } | |
940 | asc = c_d ? INVALID_FIELD_IN_CDB : INVALID_FIELD_IN_PARAM_LIST; | |
941 | memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); | |
f2b1e9c6 | 942 | scsi_build_sense(scp, sdebug_dsense, ILLEGAL_REQUEST, asc, 0); |
22017ed2 DG |
943 | memset(sks, 0, sizeof(sks)); |
944 | sks[0] = 0x80; | |
945 | if (c_d) | |
946 | sks[0] |= 0x40; | |
947 | if (in_bit >= 0) { | |
948 | sks[0] |= 0x8; | |
949 | sks[0] |= 0x7 & in_bit; | |
950 | } | |
951 | put_unaligned_be16(in_byte, sks + 1); | |
773642d9 | 952 | if (sdebug_dsense) { |
22017ed2 DG |
953 | sl = sbuff[7] + 8; |
954 | sbuff[7] = sl; | |
955 | sbuff[sl] = 0x2; | |
956 | sbuff[sl + 1] = 0x6; | |
957 | memcpy(sbuff + sl + 4, sks, 3); | |
958 | } else | |
959 | memcpy(sbuff + 15, sks, 3); | |
773642d9 | 960 | if (sdebug_verbose) |
22017ed2 DG |
961 | sdev_printk(KERN_INFO, scp->device, "%s: [sense_key,asc,ascq" |
962 | "]: [0x5,0x%x,0x0] %c byte=%d, bit=%d\n", | |
963 | my_name, asc, c_d ? 'C' : 'D', in_byte, in_bit); | |
964 | } | |
965 | ||
cbf67842 | 966 | static void mk_sense_buffer(struct scsi_cmnd *scp, int key, int asc, int asq) |
8dea0d02 | 967 | { |
f2b1e9c6 | 968 | if (!scp->sense_buffer) { |
cbf67842 DG |
969 | sdev_printk(KERN_ERR, scp->device, |
970 | "%s: sense_buffer is NULL\n", __func__); | |
971 | return; | |
972 | } | |
f2b1e9c6 | 973 | memset(scp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
8dea0d02 | 974 | |
f2b1e9c6 | 975 | scsi_build_sense(scp, sdebug_dsense, key, asc, asq); |
8dea0d02 | 976 | |
773642d9 | 977 | if (sdebug_verbose) |
cbf67842 DG |
978 | sdev_printk(KERN_INFO, scp->device, |
979 | "%s: [sense_key,asc,ascq]: [0x%x,0x%x,0x%x]\n", | |
980 | my_name, key, asc, asq); | |
8dea0d02 | 981 | } |
1da177e4 | 982 | |
fd32119b | 983 | static void mk_sense_invalid_opcode(struct scsi_cmnd *scp) |
22017ed2 DG |
984 | { |
985 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_OPCODE, 0); | |
986 | } | |
987 | ||
6f4e626f NC |
988 | static int scsi_debug_ioctl(struct scsi_device *dev, unsigned int cmd, |
989 | void __user *arg) | |
1da177e4 | 990 | { |
773642d9 | 991 | if (sdebug_verbose) { |
cbf67842 DG |
992 | if (0x1261 == cmd) |
993 | sdev_printk(KERN_INFO, dev, | |
994 | "%s: BLKFLSBUF [0x1261]\n", __func__); | |
995 | else if (0x5331 == cmd) | |
996 | sdev_printk(KERN_INFO, dev, | |
997 | "%s: CDROM_GET_CAPABILITY [0x5331]\n", | |
998 | __func__); | |
999 | else | |
1000 | sdev_printk(KERN_INFO, dev, "%s: cmd=0x%x\n", | |
1001 | __func__, cmd); | |
1da177e4 LT |
1002 | } |
1003 | return -EINVAL; | |
1004 | /* return -ENOTTY; // correct return but upsets fdisk */ | |
1005 | } | |
1006 | ||
9b760fd8 DG |
1007 | static void config_cdb_len(struct scsi_device *sdev) |
1008 | { | |
1009 | switch (sdebug_cdb_len) { | |
1010 | case 6: /* suggest 6 byte READ, WRITE and MODE SENSE/SELECT */ | |
1011 | sdev->use_10_for_rw = false; | |
1012 | sdev->use_16_for_rw = false; | |
1013 | sdev->use_10_for_ms = false; | |
1014 | break; | |
1015 | case 10: /* suggest 10 byte RWs and 6 byte MODE SENSE/SELECT */ | |
1016 | sdev->use_10_for_rw = true; | |
1017 | sdev->use_16_for_rw = false; | |
1018 | sdev->use_10_for_ms = false; | |
1019 | break; | |
1020 | case 12: /* suggest 10 byte RWs and 10 byte MODE SENSE/SELECT */ | |
1021 | sdev->use_10_for_rw = true; | |
1022 | sdev->use_16_for_rw = false; | |
1023 | sdev->use_10_for_ms = true; | |
1024 | break; | |
1025 | case 16: | |
1026 | sdev->use_10_for_rw = false; | |
1027 | sdev->use_16_for_rw = true; | |
1028 | sdev->use_10_for_ms = true; | |
1029 | break; | |
1030 | case 32: /* No knobs to suggest this so same as 16 for now */ | |
1031 | sdev->use_10_for_rw = false; | |
1032 | sdev->use_16_for_rw = true; | |
1033 | sdev->use_10_for_ms = true; | |
1034 | break; | |
1035 | default: | |
1036 | pr_warn("unexpected cdb_len=%d, force to 10\n", | |
1037 | sdebug_cdb_len); | |
1038 | sdev->use_10_for_rw = true; | |
1039 | sdev->use_16_for_rw = false; | |
1040 | sdev->use_10_for_ms = false; | |
1041 | sdebug_cdb_len = 10; | |
1042 | break; | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | static void all_config_cdb_len(void) | |
1047 | { | |
1048 | struct sdebug_host_info *sdbg_host; | |
1049 | struct Scsi_Host *shost; | |
1050 | struct scsi_device *sdev; | |
1051 | ||
1052 | spin_lock(&sdebug_host_list_lock); | |
1053 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
1054 | shost = sdbg_host->shost; | |
1055 | shost_for_each_device(sdev, shost) { | |
1056 | config_cdb_len(sdev); | |
1057 | } | |
1058 | } | |
1059 | spin_unlock(&sdebug_host_list_lock); | |
1060 | } | |
1061 | ||
19c8ead7 EM |
1062 | static void clear_luns_changed_on_target(struct sdebug_dev_info *devip) |
1063 | { | |
1064 | struct sdebug_host_info *sdhp; | |
1065 | struct sdebug_dev_info *dp; | |
1066 | ||
1067 | spin_lock(&sdebug_host_list_lock); | |
1068 | list_for_each_entry(sdhp, &sdebug_host_list, host_list) { | |
1069 | list_for_each_entry(dp, &sdhp->dev_info_list, dev_list) { | |
1070 | if ((devip->sdbg_host == dp->sdbg_host) && | |
1071 | (devip->target == dp->target)) | |
1072 | clear_bit(SDEBUG_UA_LUNS_CHANGED, dp->uas_bm); | |
1073 | } | |
1074 | } | |
1075 | spin_unlock(&sdebug_host_list_lock); | |
1076 | } | |
1077 | ||
f46eb0e9 | 1078 | static int make_ua(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
1da177e4 | 1079 | { |
cbf67842 | 1080 | int k; |
cbf67842 DG |
1081 | |
1082 | k = find_first_bit(devip->uas_bm, SDEBUG_NUM_UAS); | |
1083 | if (k != SDEBUG_NUM_UAS) { | |
1084 | const char *cp = NULL; | |
1085 | ||
1086 | switch (k) { | |
1087 | case SDEBUG_UA_POR: | |
f46eb0e9 DG |
1088 | mk_sense_buffer(scp, UNIT_ATTENTION, UA_RESET_ASC, |
1089 | POWER_ON_RESET_ASCQ); | |
773642d9 | 1090 | if (sdebug_verbose) |
cbf67842 DG |
1091 | cp = "power on reset"; |
1092 | break; | |
500d0d24 DG |
1093 | case SDEBUG_UA_POOCCUR: |
1094 | mk_sense_buffer(scp, UNIT_ATTENTION, UA_RESET_ASC, | |
1095 | POWER_ON_OCCURRED_ASCQ); | |
1096 | if (sdebug_verbose) | |
1097 | cp = "power on occurred"; | |
1098 | break; | |
cbf67842 | 1099 | case SDEBUG_UA_BUS_RESET: |
f46eb0e9 DG |
1100 | mk_sense_buffer(scp, UNIT_ATTENTION, UA_RESET_ASC, |
1101 | BUS_RESET_ASCQ); | |
773642d9 | 1102 | if (sdebug_verbose) |
cbf67842 DG |
1103 | cp = "bus reset"; |
1104 | break; | |
1105 | case SDEBUG_UA_MODE_CHANGED: | |
f46eb0e9 DG |
1106 | mk_sense_buffer(scp, UNIT_ATTENTION, UA_CHANGED_ASC, |
1107 | MODE_CHANGED_ASCQ); | |
773642d9 | 1108 | if (sdebug_verbose) |
cbf67842 DG |
1109 | cp = "mode parameters changed"; |
1110 | break; | |
0d01c5df | 1111 | case SDEBUG_UA_CAPACITY_CHANGED: |
f46eb0e9 DG |
1112 | mk_sense_buffer(scp, UNIT_ATTENTION, UA_CHANGED_ASC, |
1113 | CAPACITY_CHANGED_ASCQ); | |
773642d9 | 1114 | if (sdebug_verbose) |
0d01c5df | 1115 | cp = "capacity data changed"; |
f49accf1 | 1116 | break; |
acafd0b9 | 1117 | case SDEBUG_UA_MICROCODE_CHANGED: |
f46eb0e9 | 1118 | mk_sense_buffer(scp, UNIT_ATTENTION, |
b01f6f83 DG |
1119 | TARGET_CHANGED_ASC, |
1120 | MICROCODE_CHANGED_ASCQ); | |
773642d9 | 1121 | if (sdebug_verbose) |
acafd0b9 EM |
1122 | cp = "microcode has been changed"; |
1123 | break; | |
1124 | case SDEBUG_UA_MICROCODE_CHANGED_WO_RESET: | |
f46eb0e9 | 1125 | mk_sense_buffer(scp, UNIT_ATTENTION, |
acafd0b9 EM |
1126 | TARGET_CHANGED_ASC, |
1127 | MICROCODE_CHANGED_WO_RESET_ASCQ); | |
773642d9 | 1128 | if (sdebug_verbose) |
acafd0b9 EM |
1129 | cp = "microcode has been changed without reset"; |
1130 | break; | |
19c8ead7 EM |
1131 | case SDEBUG_UA_LUNS_CHANGED: |
1132 | /* | |
1133 | * SPC-3 behavior is to report a UNIT ATTENTION with | |
1134 | * ASC/ASCQ REPORTED LUNS DATA HAS CHANGED on every LUN | |
1135 | * on the target, until a REPORT LUNS command is | |
1136 | * received. SPC-4 behavior is to report it only once. | |
773642d9 | 1137 | * NOTE: sdebug_scsi_level does not use the same |
19c8ead7 EM |
1138 | * values as struct scsi_device->scsi_level. |
1139 | */ | |
773642d9 | 1140 | if (sdebug_scsi_level >= 6) /* SPC-4 and above */ |
19c8ead7 | 1141 | clear_luns_changed_on_target(devip); |
f46eb0e9 | 1142 | mk_sense_buffer(scp, UNIT_ATTENTION, |
19c8ead7 EM |
1143 | TARGET_CHANGED_ASC, |
1144 | LUNS_CHANGED_ASCQ); | |
773642d9 | 1145 | if (sdebug_verbose) |
19c8ead7 EM |
1146 | cp = "reported luns data has changed"; |
1147 | break; | |
cbf67842 | 1148 | default: |
773642d9 DG |
1149 | pr_warn("unexpected unit attention code=%d\n", k); |
1150 | if (sdebug_verbose) | |
cbf67842 DG |
1151 | cp = "unknown"; |
1152 | break; | |
1153 | } | |
1154 | clear_bit(k, devip->uas_bm); | |
773642d9 | 1155 | if (sdebug_verbose) |
f46eb0e9 | 1156 | sdev_printk(KERN_INFO, scp->device, |
cbf67842 DG |
1157 | "%s reports: Unit attention: %s\n", |
1158 | my_name, cp); | |
1da177e4 LT |
1159 | return check_condition_result; |
1160 | } | |
1161 | return 0; | |
1162 | } | |
1163 | ||
fb0cc8d1 | 1164 | /* Build SCSI "data-in" buffer. Returns 0 if ok else (DID_ERROR << 16). */ |
21a61829 | 1165 | static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
1da177e4 LT |
1166 | int arr_len) |
1167 | { | |
21a61829 | 1168 | int act_len; |
ae3d56d8 | 1169 | struct scsi_data_buffer *sdb = &scp->sdb; |
1da177e4 | 1170 | |
072d0bb3 | 1171 | if (!sdb->length) |
1da177e4 | 1172 | return 0; |
ae3d56d8 | 1173 | if (scp->sc_data_direction != DMA_FROM_DEVICE) |
773642d9 | 1174 | return DID_ERROR << 16; |
21a61829 FT |
1175 | |
1176 | act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, | |
1177 | arr, arr_len); | |
42d387be | 1178 | scsi_set_resid(scp, scsi_bufflen(scp) - act_len); |
21a61829 | 1179 | |
1da177e4 LT |
1180 | return 0; |
1181 | } | |
1182 | ||
fb0cc8d1 DG |
1183 | /* Partial build of SCSI "data-in" buffer. Returns 0 if ok else |
1184 | * (DID_ERROR << 16). Can write to offset in data-in buffer. If multiple | |
1185 | * calls, not required to write in ascending offset order. Assumes resid | |
1186 | * set to scsi_bufflen() prior to any calls. | |
1187 | */ | |
1188 | static int p_fill_from_dev_buffer(struct scsi_cmnd *scp, const void *arr, | |
1189 | int arr_len, unsigned int off_dst) | |
1190 | { | |
9237f04e | 1191 | unsigned int act_len, n; |
ae3d56d8 | 1192 | struct scsi_data_buffer *sdb = &scp->sdb; |
fb0cc8d1 DG |
1193 | off_t skip = off_dst; |
1194 | ||
1195 | if (sdb->length <= off_dst) | |
1196 | return 0; | |
ae3d56d8 | 1197 | if (scp->sc_data_direction != DMA_FROM_DEVICE) |
fb0cc8d1 DG |
1198 | return DID_ERROR << 16; |
1199 | ||
1200 | act_len = sg_pcopy_from_buffer(sdb->table.sgl, sdb->table.nents, | |
1201 | arr, arr_len, skip); | |
1202 | pr_debug("%s: off_dst=%u, scsi_bufflen=%u, act_len=%u, resid=%d\n", | |
42d387be BVA |
1203 | __func__, off_dst, scsi_bufflen(scp), act_len, |
1204 | scsi_get_resid(scp)); | |
9237f04e | 1205 | n = scsi_bufflen(scp) - (off_dst + act_len); |
36e07d7e | 1206 | scsi_set_resid(scp, min_t(u32, scsi_get_resid(scp), n)); |
fb0cc8d1 DG |
1207 | return 0; |
1208 | } | |
1209 | ||
1210 | /* Fetches from SCSI "data-out" buffer. Returns number of bytes fetched into | |
1211 | * 'arr' or -1 if error. | |
1212 | */ | |
21a61829 FT |
1213 | static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
1214 | int arr_len) | |
1da177e4 | 1215 | { |
21a61829 | 1216 | if (!scsi_bufflen(scp)) |
1da177e4 | 1217 | return 0; |
ae3d56d8 | 1218 | if (scp->sc_data_direction != DMA_TO_DEVICE) |
1da177e4 | 1219 | return -1; |
21a61829 FT |
1220 | |
1221 | return scsi_sg_copy_to_buffer(scp, arr, arr_len); | |
1da177e4 LT |
1222 | } |
1223 | ||
1224 | ||
e5203cf0 HR |
1225 | static char sdebug_inq_vendor_id[9] = "Linux "; |
1226 | static char sdebug_inq_product_id[17] = "scsi_debug "; | |
9b760fd8 | 1227 | static char sdebug_inq_product_rev[5] = SDEBUG_VERSION; |
1b37bd60 DG |
1228 | /* Use some locally assigned NAAs for SAS addresses. */ |
1229 | static const u64 naa3_comp_a = 0x3222222000000000ULL; | |
1230 | static const u64 naa3_comp_b = 0x3333333000000000ULL; | |
1231 | static const u64 naa3_comp_c = 0x3111111000000000ULL; | |
1da177e4 | 1232 | |
cbf67842 | 1233 | /* Device identification VPD page. Returns number of bytes placed in arr */ |
760f3b03 DG |
1234 | static int inquiry_vpd_83(unsigned char *arr, int port_group_id, |
1235 | int target_dev_id, int dev_id_num, | |
09ba24c1 | 1236 | const char *dev_id_str, int dev_id_str_len, |
bf476433 | 1237 | const uuid_t *lu_name) |
1da177e4 | 1238 | { |
c65b1445 DG |
1239 | int num, port_a; |
1240 | char b[32]; | |
1da177e4 | 1241 | |
c65b1445 | 1242 | port_a = target_dev_id + 1; |
1da177e4 LT |
1243 | /* T10 vendor identifier field format (faked) */ |
1244 | arr[0] = 0x2; /* ASCII */ | |
1245 | arr[1] = 0x1; | |
1246 | arr[2] = 0x0; | |
e5203cf0 HR |
1247 | memcpy(&arr[4], sdebug_inq_vendor_id, 8); |
1248 | memcpy(&arr[12], sdebug_inq_product_id, 16); | |
1da177e4 LT |
1249 | memcpy(&arr[28], dev_id_str, dev_id_str_len); |
1250 | num = 8 + 16 + dev_id_str_len; | |
1251 | arr[3] = num; | |
1252 | num += 4; | |
c65b1445 | 1253 | if (dev_id_num >= 0) { |
09ba24c1 DG |
1254 | if (sdebug_uuid_ctl) { |
1255 | /* Locally assigned UUID */ | |
1256 | arr[num++] = 0x1; /* binary (not necessarily sas) */ | |
1257 | arr[num++] = 0xa; /* PIV=0, lu, naa */ | |
1258 | arr[num++] = 0x0; | |
1259 | arr[num++] = 0x12; | |
1260 | arr[num++] = 0x10; /* uuid type=1, locally assigned */ | |
1261 | arr[num++] = 0x0; | |
1262 | memcpy(arr + num, lu_name, 16); | |
1263 | num += 16; | |
1264 | } else { | |
1b37bd60 | 1265 | /* NAA-3, Logical unit identifier (binary) */ |
09ba24c1 DG |
1266 | arr[num++] = 0x1; /* binary (not necessarily sas) */ |
1267 | arr[num++] = 0x3; /* PIV=0, lu, naa */ | |
1268 | arr[num++] = 0x0; | |
1269 | arr[num++] = 0x8; | |
1b37bd60 | 1270 | put_unaligned_be64(naa3_comp_b + dev_id_num, arr + num); |
09ba24c1 DG |
1271 | num += 8; |
1272 | } | |
c65b1445 DG |
1273 | /* Target relative port number */ |
1274 | arr[num++] = 0x61; /* proto=sas, binary */ | |
1275 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ | |
1276 | arr[num++] = 0x0; /* reserved */ | |
1277 | arr[num++] = 0x4; /* length */ | |
1278 | arr[num++] = 0x0; /* reserved */ | |
1279 | arr[num++] = 0x0; /* reserved */ | |
1280 | arr[num++] = 0x0; | |
1281 | arr[num++] = 0x1; /* relative port A */ | |
1282 | } | |
1b37bd60 | 1283 | /* NAA-3, Target port identifier */ |
c65b1445 DG |
1284 | arr[num++] = 0x61; /* proto=sas, binary */ |
1285 | arr[num++] = 0x93; /* piv=1, target port, naa */ | |
1286 | arr[num++] = 0x0; | |
1287 | arr[num++] = 0x8; | |
1b37bd60 | 1288 | put_unaligned_be64(naa3_comp_a + port_a, arr + num); |
773642d9 | 1289 | num += 8; |
1b37bd60 | 1290 | /* NAA-3, Target port group identifier */ |
5a09e398 HR |
1291 | arr[num++] = 0x61; /* proto=sas, binary */ |
1292 | arr[num++] = 0x95; /* piv=1, target port group id */ | |
1293 | arr[num++] = 0x0; | |
1294 | arr[num++] = 0x4; | |
1295 | arr[num++] = 0; | |
1296 | arr[num++] = 0; | |
773642d9 DG |
1297 | put_unaligned_be16(port_group_id, arr + num); |
1298 | num += 2; | |
1b37bd60 | 1299 | /* NAA-3, Target device identifier */ |
c65b1445 DG |
1300 | arr[num++] = 0x61; /* proto=sas, binary */ |
1301 | arr[num++] = 0xa3; /* piv=1, target device, naa */ | |
1302 | arr[num++] = 0x0; | |
1303 | arr[num++] = 0x8; | |
1b37bd60 | 1304 | put_unaligned_be64(naa3_comp_a + target_dev_id, arr + num); |
773642d9 | 1305 | num += 8; |
c65b1445 DG |
1306 | /* SCSI name string: Target device identifier */ |
1307 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ | |
1308 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ | |
1309 | arr[num++] = 0x0; | |
1310 | arr[num++] = 24; | |
1b37bd60 | 1311 | memcpy(arr + num, "naa.32222220", 12); |
c65b1445 DG |
1312 | num += 12; |
1313 | snprintf(b, sizeof(b), "%08X", target_dev_id); | |
1314 | memcpy(arr + num, b, 8); | |
1315 | num += 8; | |
1316 | memset(arr + num, 0, 4); | |
1317 | num += 4; | |
1318 | return num; | |
1319 | } | |
1320 | ||
c65b1445 DG |
1321 | static unsigned char vpd84_data[] = { |
1322 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, | |
1323 | 0x22,0x22,0x22,0x0,0xbb,0x1, | |
1324 | 0x22,0x22,0x22,0x0,0xbb,0x2, | |
1325 | }; | |
1326 | ||
cbf67842 | 1327 | /* Software interface identification VPD page */ |
760f3b03 | 1328 | static int inquiry_vpd_84(unsigned char *arr) |
c65b1445 DG |
1329 | { |
1330 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); | |
1331 | return sizeof(vpd84_data); | |
1332 | } | |
1333 | ||
cbf67842 | 1334 | /* Management network addresses VPD page */ |
760f3b03 | 1335 | static int inquiry_vpd_85(unsigned char *arr) |
c65b1445 DG |
1336 | { |
1337 | int num = 0; | |
91d4c752 JP |
1338 | const char *na1 = "https://www.kernel.org/config"; |
1339 | const char *na2 = "http://www.kernel.org/log"; | |
c65b1445 DG |
1340 | int plen, olen; |
1341 | ||
1342 | arr[num++] = 0x1; /* lu, storage config */ | |
1343 | arr[num++] = 0x0; /* reserved */ | |
1344 | arr[num++] = 0x0; | |
1345 | olen = strlen(na1); | |
1346 | plen = olen + 1; | |
1347 | if (plen % 4) | |
1348 | plen = ((plen / 4) + 1) * 4; | |
1349 | arr[num++] = plen; /* length, null termianted, padded */ | |
1350 | memcpy(arr + num, na1, olen); | |
1351 | memset(arr + num + olen, 0, plen - olen); | |
1352 | num += plen; | |
1353 | ||
1354 | arr[num++] = 0x4; /* lu, logging */ | |
1355 | arr[num++] = 0x0; /* reserved */ | |
1356 | arr[num++] = 0x0; | |
1357 | olen = strlen(na2); | |
1358 | plen = olen + 1; | |
1359 | if (plen % 4) | |
1360 | plen = ((plen / 4) + 1) * 4; | |
1361 | arr[num++] = plen; /* length, null terminated, padded */ | |
1362 | memcpy(arr + num, na2, olen); | |
1363 | memset(arr + num + olen, 0, plen - olen); | |
1364 | num += plen; | |
1365 | ||
1366 | return num; | |
1367 | } | |
1368 | ||
1369 | /* SCSI ports VPD page */ | |
760f3b03 | 1370 | static int inquiry_vpd_88(unsigned char *arr, int target_dev_id) |
c65b1445 DG |
1371 | { |
1372 | int num = 0; | |
1373 | int port_a, port_b; | |
1374 | ||
1375 | port_a = target_dev_id + 1; | |
1376 | port_b = port_a + 1; | |
1377 | arr[num++] = 0x0; /* reserved */ | |
1378 | arr[num++] = 0x0; /* reserved */ | |
1379 | arr[num++] = 0x0; | |
1380 | arr[num++] = 0x1; /* relative port 1 (primary) */ | |
1381 | memset(arr + num, 0, 6); | |
1382 | num += 6; | |
1383 | arr[num++] = 0x0; | |
1384 | arr[num++] = 12; /* length tp descriptor */ | |
1385 | /* naa-5 target port identifier (A) */ | |
1386 | arr[num++] = 0x61; /* proto=sas, binary */ | |
1387 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
1388 | arr[num++] = 0x0; /* reserved */ | |
1389 | arr[num++] = 0x8; /* length */ | |
1b37bd60 | 1390 | put_unaligned_be64(naa3_comp_a + port_a, arr + num); |
773642d9 | 1391 | num += 8; |
c65b1445 DG |
1392 | arr[num++] = 0x0; /* reserved */ |
1393 | arr[num++] = 0x0; /* reserved */ | |
1394 | arr[num++] = 0x0; | |
1395 | arr[num++] = 0x2; /* relative port 2 (secondary) */ | |
1396 | memset(arr + num, 0, 6); | |
1397 | num += 6; | |
1398 | arr[num++] = 0x0; | |
1399 | arr[num++] = 12; /* length tp descriptor */ | |
1400 | /* naa-5 target port identifier (B) */ | |
1401 | arr[num++] = 0x61; /* proto=sas, binary */ | |
1402 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
1403 | arr[num++] = 0x0; /* reserved */ | |
1404 | arr[num++] = 0x8; /* length */ | |
1b37bd60 | 1405 | put_unaligned_be64(naa3_comp_a + port_b, arr + num); |
773642d9 | 1406 | num += 8; |
c65b1445 DG |
1407 | |
1408 | return num; | |
1409 | } | |
1410 | ||
1411 | ||
1412 | static unsigned char vpd89_data[] = { | |
1413 | /* from 4th byte */ 0,0,0,0, | |
1414 | 'l','i','n','u','x',' ',' ',' ', | |
1415 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', | |
1416 | '1','2','3','4', | |
1417 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, | |
1418 | 0xec,0,0,0, | |
1419 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, | |
1420 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, | |
1421 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, | |
1422 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, | |
1423 | 0x53,0x41, | |
1424 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
1425 | 0x20,0x20, | |
1426 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
1427 | 0x10,0x80, | |
1428 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, | |
1429 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, | |
1430 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, | |
1431 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, | |
1432 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, | |
1433 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, | |
1434 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, | |
1435 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1436 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1437 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1438 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, | |
1439 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, | |
1440 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, | |
1441 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, | |
1442 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1443 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1444 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1445 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1446 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1447 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1448 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1449 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1450 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1451 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1452 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1453 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, | |
1454 | }; | |
1455 | ||
cbf67842 | 1456 | /* ATA Information VPD page */ |
760f3b03 | 1457 | static int inquiry_vpd_89(unsigned char *arr) |
c65b1445 DG |
1458 | { |
1459 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); | |
1460 | return sizeof(vpd89_data); | |
1461 | } | |
1462 | ||
1463 | ||
1464 | static unsigned char vpdb0_data[] = { | |
1e49f785 DG |
1465 | /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64, |
1466 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1467 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1468 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
c65b1445 DG |
1469 | }; |
1470 | ||
cbf67842 | 1471 | /* Block limits VPD page (SBC-3) */ |
760f3b03 | 1472 | static int inquiry_vpd_b0(unsigned char *arr) |
c65b1445 | 1473 | { |
ea61fca5 MP |
1474 | unsigned int gran; |
1475 | ||
c65b1445 | 1476 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
e308b3d1 MP |
1477 | |
1478 | /* Optimal transfer length granularity */ | |
86e6828a LH |
1479 | if (sdebug_opt_xferlen_exp != 0 && |
1480 | sdebug_physblk_exp < sdebug_opt_xferlen_exp) | |
1481 | gran = 1 << sdebug_opt_xferlen_exp; | |
1482 | else | |
1483 | gran = 1 << sdebug_physblk_exp; | |
773642d9 | 1484 | put_unaligned_be16(gran, arr + 2); |
e308b3d1 MP |
1485 | |
1486 | /* Maximum Transfer Length */ | |
773642d9 DG |
1487 | if (sdebug_store_sectors > 0x400) |
1488 | put_unaligned_be32(sdebug_store_sectors, arr + 4); | |
44d92694 | 1489 | |
e308b3d1 | 1490 | /* Optimal Transfer Length */ |
773642d9 | 1491 | put_unaligned_be32(sdebug_opt_blks, &arr[8]); |
e308b3d1 | 1492 | |
773642d9 | 1493 | if (sdebug_lbpu) { |
e308b3d1 | 1494 | /* Maximum Unmap LBA Count */ |
773642d9 | 1495 | put_unaligned_be32(sdebug_unmap_max_blocks, &arr[16]); |
e308b3d1 MP |
1496 | |
1497 | /* Maximum Unmap Block Descriptor Count */ | |
773642d9 | 1498 | put_unaligned_be32(sdebug_unmap_max_desc, &arr[20]); |
44d92694 MP |
1499 | } |
1500 | ||
e308b3d1 | 1501 | /* Unmap Granularity Alignment */ |
773642d9 DG |
1502 | if (sdebug_unmap_alignment) { |
1503 | put_unaligned_be32(sdebug_unmap_alignment, &arr[28]); | |
44d92694 MP |
1504 | arr[28] |= 0x80; /* UGAVALID */ |
1505 | } | |
1506 | ||
e308b3d1 | 1507 | /* Optimal Unmap Granularity */ |
773642d9 | 1508 | put_unaligned_be32(sdebug_unmap_granularity, &arr[24]); |
6014759c | 1509 | |
5b94e232 | 1510 | /* Maximum WRITE SAME Length */ |
773642d9 | 1511 | put_unaligned_be64(sdebug_write_same_length, &arr[32]); |
5b94e232 MP |
1512 | |
1513 | return 0x3c; /* Mandatory page length for Logical Block Provisioning */ | |
44d92694 | 1514 | |
c65b1445 | 1515 | return sizeof(vpdb0_data); |
1da177e4 LT |
1516 | } |
1517 | ||
1e49f785 | 1518 | /* Block device characteristics VPD page (SBC-3) */ |
64e14ece | 1519 | static int inquiry_vpd_b1(struct sdebug_dev_info *devip, unsigned char *arr) |
eac6e8e4 MW |
1520 | { |
1521 | memset(arr, 0, 0x3c); | |
1522 | arr[0] = 0; | |
1e49f785 DG |
1523 | arr[1] = 1; /* non rotating medium (e.g. solid state) */ |
1524 | arr[2] = 0; | |
1525 | arr[3] = 5; /* less than 1.8" */ | |
64e14ece DLM |
1526 | if (devip->zmodel == BLK_ZONED_HA) |
1527 | arr[4] = 1 << 4; /* zoned field = 01b */ | |
eac6e8e4 MW |
1528 | |
1529 | return 0x3c; | |
1530 | } | |
1da177e4 | 1531 | |
760f3b03 DG |
1532 | /* Logical block provisioning VPD page (SBC-4) */ |
1533 | static int inquiry_vpd_b2(unsigned char *arr) | |
6014759c | 1534 | { |
3f0bc3b3 | 1535 | memset(arr, 0, 0x4); |
6014759c | 1536 | arr[0] = 0; /* threshold exponent */ |
773642d9 | 1537 | if (sdebug_lbpu) |
6014759c | 1538 | arr[1] = 1 << 7; |
773642d9 | 1539 | if (sdebug_lbpws) |
6014759c | 1540 | arr[1] |= 1 << 6; |
773642d9 | 1541 | if (sdebug_lbpws10) |
5b94e232 | 1542 | arr[1] |= 1 << 5; |
760f3b03 DG |
1543 | if (sdebug_lbprz && scsi_debug_lbp()) |
1544 | arr[1] |= (sdebug_lbprz & 0x7) << 2; /* sbc4r07 and later */ | |
1545 | /* anc_sup=0; dp=0 (no provisioning group descriptor) */ | |
1546 | /* minimum_percentage=0; provisioning_type=0 (unknown) */ | |
1547 | /* threshold_percentage=0 */ | |
3f0bc3b3 | 1548 | return 0x4; |
6014759c MP |
1549 | } |
1550 | ||
d36da305 | 1551 | /* Zoned block device characteristics VPD page (ZBC mandatory) */ |
f0d1cf93 | 1552 | static int inquiry_vpd_b6(struct sdebug_dev_info *devip, unsigned char *arr) |
d36da305 DG |
1553 | { |
1554 | memset(arr, 0, 0x3c); | |
1555 | arr[0] = 0x1; /* set URSWRZ (unrestricted read in seq. wr req zone) */ | |
1556 | /* | |
1557 | * Set Optimal number of open sequential write preferred zones and | |
1558 | * Optimal number of non-sequentially written sequential write | |
f0d1cf93 DG |
1559 | * preferred zones fields to 'not reported' (0xffffffff). Leave other |
1560 | * fields set to zero, apart from Max. number of open swrz_s field. | |
d36da305 DG |
1561 | */ |
1562 | put_unaligned_be32(0xffffffff, &arr[4]); | |
1563 | put_unaligned_be32(0xffffffff, &arr[8]); | |
64e14ece | 1564 | if (sdeb_zbc_model == BLK_ZONED_HM && devip->max_open) |
f0d1cf93 DG |
1565 | put_unaligned_be32(devip->max_open, &arr[12]); |
1566 | else | |
1567 | put_unaligned_be32(0xffffffff, &arr[12]); | |
4a5fc1c6 DLM |
1568 | if (devip->zcap < devip->zsize) { |
1569 | arr[19] = ZBC_CONSTANT_ZONE_START_OFFSET; | |
1570 | put_unaligned_be64(devip->zsize, &arr[20]); | |
1571 | } else { | |
1572 | arr[19] = 0; | |
1573 | } | |
d36da305 DG |
1574 | return 0x3c; |
1575 | } | |
1576 | ||
1da177e4 | 1577 | #define SDEBUG_LONG_INQ_SZ 96 |
c65b1445 | 1578 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
1da177e4 | 1579 | |
c2248fc9 | 1580 | static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
1da177e4 LT |
1581 | { |
1582 | unsigned char pq_pdt; | |
91d4c752 | 1583 | unsigned char *arr; |
01123ef4 | 1584 | unsigned char *cmd = scp->cmnd; |
36e07d7e GK |
1585 | u32 alloc_len, n; |
1586 | int ret; | |
d36da305 | 1587 | bool have_wlun, is_disk, is_zbc, is_disk_zbc; |
1da177e4 | 1588 | |
773642d9 | 1589 | alloc_len = get_unaligned_be16(cmd + 3); |
6f3cbf55 DG |
1590 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
1591 | if (! arr) | |
1592 | return DID_REQUEUE << 16; | |
760f3b03 | 1593 | is_disk = (sdebug_ptype == TYPE_DISK); |
64e14ece | 1594 | is_zbc = (devip->zmodel != BLK_ZONED_NONE); |
d36da305 | 1595 | is_disk_zbc = (is_disk || is_zbc); |
b01f6f83 | 1596 | have_wlun = scsi_is_wlun(scp->device->lun); |
c2248fc9 | 1597 | if (have_wlun) |
b01f6f83 DG |
1598 | pq_pdt = TYPE_WLUN; /* present, wlun */ |
1599 | else if (sdebug_no_lun_0 && (devip->lun == SDEBUG_LUN_0_VAL)) | |
1600 | pq_pdt = 0x7f; /* not present, PQ=3, PDT=0x1f */ | |
c65b1445 | 1601 | else |
773642d9 | 1602 | pq_pdt = (sdebug_ptype & 0x1f); |
1da177e4 LT |
1603 | arr[0] = pq_pdt; |
1604 | if (0x2 & cmd[1]) { /* CMDDT bit set */ | |
22017ed2 | 1605 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 1); |
5a09e398 | 1606 | kfree(arr); |
1da177e4 LT |
1607 | return check_condition_result; |
1608 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ | |
36e07d7e GK |
1609 | int lu_id_num, port_group_id, target_dev_id; |
1610 | u32 len; | |
c65b1445 DG |
1611 | char lu_id_str[6]; |
1612 | int host_no = devip->sdbg_host->shost->host_no; | |
1da177e4 | 1613 | |
5a09e398 HR |
1614 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
1615 | (devip->channel & 0x7f); | |
b01f6f83 | 1616 | if (sdebug_vpd_use_hostno == 0) |
23183910 | 1617 | host_no = 0; |
c2248fc9 | 1618 | lu_id_num = have_wlun ? -1 : (((host_no + 1) * 2000) + |
c65b1445 DG |
1619 | (devip->target * 1000) + devip->lun); |
1620 | target_dev_id = ((host_no + 1) * 2000) + | |
1621 | (devip->target * 1000) - 3; | |
1622 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); | |
1da177e4 | 1623 | if (0 == cmd[2]) { /* supported vital product data pages */ |
c65b1445 DG |
1624 | arr[1] = cmd[2]; /*sanity */ |
1625 | n = 4; | |
1626 | arr[n++] = 0x0; /* this page */ | |
1627 | arr[n++] = 0x80; /* unit serial number */ | |
1628 | arr[n++] = 0x83; /* device identification */ | |
1629 | arr[n++] = 0x84; /* software interface ident. */ | |
1630 | arr[n++] = 0x85; /* management network addresses */ | |
1631 | arr[n++] = 0x86; /* extended inquiry */ | |
1632 | arr[n++] = 0x87; /* mode page policy */ | |
1633 | arr[n++] = 0x88; /* SCSI ports */ | |
d36da305 | 1634 | if (is_disk_zbc) { /* SBC or ZBC */ |
760f3b03 DG |
1635 | arr[n++] = 0x89; /* ATA information */ |
1636 | arr[n++] = 0xb0; /* Block limits */ | |
1637 | arr[n++] = 0xb1; /* Block characteristics */ | |
d36da305 DG |
1638 | if (is_disk) |
1639 | arr[n++] = 0xb2; /* LB Provisioning */ | |
64e14ece | 1640 | if (is_zbc) |
d36da305 | 1641 | arr[n++] = 0xb6; /* ZB dev. char. */ |
760f3b03 | 1642 | } |
c65b1445 | 1643 | arr[3] = n - 4; /* number of supported VPD pages */ |
1da177e4 | 1644 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
c65b1445 | 1645 | arr[1] = cmd[2]; /*sanity */ |
1da177e4 | 1646 | arr[3] = len; |
c65b1445 | 1647 | memcpy(&arr[4], lu_id_str, len); |
1da177e4 | 1648 | } else if (0x83 == cmd[2]) { /* device identification */ |
c65b1445 | 1649 | arr[1] = cmd[2]; /*sanity */ |
760f3b03 DG |
1650 | arr[3] = inquiry_vpd_83(&arr[4], port_group_id, |
1651 | target_dev_id, lu_id_num, | |
09ba24c1 DG |
1652 | lu_id_str, len, |
1653 | &devip->lu_name); | |
c65b1445 DG |
1654 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
1655 | arr[1] = cmd[2]; /*sanity */ | |
760f3b03 | 1656 | arr[3] = inquiry_vpd_84(&arr[4]); |
c65b1445 DG |
1657 | } else if (0x85 == cmd[2]) { /* Management network addresses */ |
1658 | arr[1] = cmd[2]; /*sanity */ | |
760f3b03 | 1659 | arr[3] = inquiry_vpd_85(&arr[4]); |
c65b1445 DG |
1660 | } else if (0x86 == cmd[2]) { /* extended inquiry */ |
1661 | arr[1] = cmd[2]; /*sanity */ | |
1662 | arr[3] = 0x3c; /* number of following entries */ | |
8475c811 | 1663 | if (sdebug_dif == T10_PI_TYPE3_PROTECTION) |
c6a44287 | 1664 | arr[4] = 0x4; /* SPT: GRD_CHK:1 */ |
760f3b03 | 1665 | else if (have_dif_prot) |
c6a44287 MP |
1666 | arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ |
1667 | else | |
1668 | arr[4] = 0x0; /* no protection stuff */ | |
c65b1445 DG |
1669 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
1670 | } else if (0x87 == cmd[2]) { /* mode page policy */ | |
1671 | arr[1] = cmd[2]; /*sanity */ | |
1672 | arr[3] = 0x8; /* number of following entries */ | |
1673 | arr[4] = 0x2; /* disconnect-reconnect mp */ | |
1674 | arr[6] = 0x80; /* mlus, shared */ | |
1675 | arr[8] = 0x18; /* protocol specific lu */ | |
1676 | arr[10] = 0x82; /* mlus, per initiator port */ | |
1677 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ | |
1678 | arr[1] = cmd[2]; /*sanity */ | |
760f3b03 | 1679 | arr[3] = inquiry_vpd_88(&arr[4], target_dev_id); |
d36da305 | 1680 | } else if (is_disk_zbc && 0x89 == cmd[2]) { /* ATA info */ |
c65b1445 | 1681 | arr[1] = cmd[2]; /*sanity */ |
760f3b03 | 1682 | n = inquiry_vpd_89(&arr[4]); |
773642d9 | 1683 | put_unaligned_be16(n, arr + 2); |
d36da305 | 1684 | } else if (is_disk_zbc && 0xb0 == cmd[2]) { /* Block limits */ |
c65b1445 | 1685 | arr[1] = cmd[2]; /*sanity */ |
760f3b03 | 1686 | arr[3] = inquiry_vpd_b0(&arr[4]); |
d36da305 | 1687 | } else if (is_disk_zbc && 0xb1 == cmd[2]) { /* Block char. */ |
eac6e8e4 | 1688 | arr[1] = cmd[2]; /*sanity */ |
64e14ece | 1689 | arr[3] = inquiry_vpd_b1(devip, &arr[4]); |
760f3b03 | 1690 | } else if (is_disk && 0xb2 == cmd[2]) { /* LB Prov. */ |
6014759c | 1691 | arr[1] = cmd[2]; /*sanity */ |
760f3b03 | 1692 | arr[3] = inquiry_vpd_b2(&arr[4]); |
d36da305 DG |
1693 | } else if (is_zbc && cmd[2] == 0xb6) { /* ZB dev. charact. */ |
1694 | arr[1] = cmd[2]; /*sanity */ | |
f0d1cf93 | 1695 | arr[3] = inquiry_vpd_b6(devip, &arr[4]); |
1da177e4 | 1696 | } else { |
22017ed2 | 1697 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); |
5a09e398 | 1698 | kfree(arr); |
1da177e4 LT |
1699 | return check_condition_result; |
1700 | } | |
36e07d7e | 1701 | len = min_t(u32, get_unaligned_be16(arr + 2) + 4, alloc_len); |
5a09e398 | 1702 | ret = fill_from_dev_buffer(scp, arr, |
36e07d7e | 1703 | min_t(u32, len, SDEBUG_MAX_INQ_ARR_SZ)); |
5a09e398 HR |
1704 | kfree(arr); |
1705 | return ret; | |
1da177e4 LT |
1706 | } |
1707 | /* drops through here for a standard inquiry */ | |
773642d9 DG |
1708 | arr[1] = sdebug_removable ? 0x80 : 0; /* Removable disk */ |
1709 | arr[2] = sdebug_scsi_level; | |
1da177e4 LT |
1710 | arr[3] = 2; /* response_data_format==2 */ |
1711 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; | |
f46eb0e9 | 1712 | arr[5] = (int)have_dif_prot; /* PROTECT bit */ |
b01f6f83 | 1713 | if (sdebug_vpd_use_hostno == 0) |
70bdf202 | 1714 | arr[5] |= 0x10; /* claim: implicit TPGS */ |
c65b1445 | 1715 | arr[6] = 0x10; /* claim: MultiP */ |
1da177e4 | 1716 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
c65b1445 | 1717 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
e5203cf0 HR |
1718 | memcpy(&arr[8], sdebug_inq_vendor_id, 8); |
1719 | memcpy(&arr[16], sdebug_inq_product_id, 16); | |
1720 | memcpy(&arr[32], sdebug_inq_product_rev, 4); | |
9b760fd8 DG |
1721 | /* Use Vendor Specific area to place driver date in ASCII hex */ |
1722 | memcpy(&arr[36], sdebug_version_date, 8); | |
1da177e4 | 1723 | /* version descriptors (2 bytes each) follow */ |
760f3b03 DG |
1724 | put_unaligned_be16(0xc0, arr + 58); /* SAM-6 no version claimed */ |
1725 | put_unaligned_be16(0x5c0, arr + 60); /* SPC-5 no version claimed */ | |
c65b1445 | 1726 | n = 62; |
760f3b03 DG |
1727 | if (is_disk) { /* SBC-4 no version claimed */ |
1728 | put_unaligned_be16(0x600, arr + n); | |
1729 | n += 2; | |
1730 | } else if (sdebug_ptype == TYPE_TAPE) { /* SSC-4 rev 3 */ | |
1731 | put_unaligned_be16(0x525, arr + n); | |
1732 | n += 2; | |
d36da305 DG |
1733 | } else if (is_zbc) { /* ZBC BSR INCITS 536 revision 05 */ |
1734 | put_unaligned_be16(0x624, arr + n); | |
1735 | n += 2; | |
1da177e4 | 1736 | } |
760f3b03 | 1737 | put_unaligned_be16(0x2100, arr + n); /* SPL-4 no version claimed */ |
5a09e398 | 1738 | ret = fill_from_dev_buffer(scp, arr, |
36e07d7e | 1739 | min_t(u32, alloc_len, SDEBUG_LONG_INQ_SZ)); |
5a09e398 HR |
1740 | kfree(arr); |
1741 | return ret; | |
1da177e4 LT |
1742 | } |
1743 | ||
84905d34 | 1744 | /* See resp_iec_m_pg() for how this data is manipulated */ |
fd32119b DG |
1745 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
1746 | 0, 0, 0x0, 0x0}; | |
1747 | ||
91d4c752 JP |
1748 | static int resp_requests(struct scsi_cmnd *scp, |
1749 | struct sdebug_dev_info *devip) | |
1da177e4 | 1750 | { |
01123ef4 | 1751 | unsigned char *cmd = scp->cmnd; |
84905d34 DG |
1752 | unsigned char arr[SCSI_SENSE_BUFFERSIZE]; /* assume >= 18 bytes */ |
1753 | bool dsense = !!(cmd[1] & 1); | |
36e07d7e GK |
1754 | u32 alloc_len = cmd[4]; |
1755 | u32 len = 18; | |
84905d34 | 1756 | int stopped_state = atomic_read(&devip->stopped); |
1da177e4 | 1757 | |
c65b1445 | 1758 | memset(arr, 0, sizeof(arr)); |
84905d34 DG |
1759 | if (stopped_state > 0) { /* some "pollable" data [spc6r02: 5.12.2] */ |
1760 | if (dsense) { | |
1761 | arr[0] = 0x72; | |
1762 | arr[1] = NOT_READY; | |
1763 | arr[2] = LOGICAL_UNIT_NOT_READY; | |
1764 | arr[3] = (stopped_state == 2) ? 0x1 : 0x2; | |
1765 | len = 8; | |
1766 | } else { | |
1767 | arr[0] = 0x70; | |
1768 | arr[2] = NOT_READY; /* NO_SENSE in sense_key */ | |
1769 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
1770 | arr[12] = LOGICAL_UNIT_NOT_READY; | |
1771 | arr[13] = (stopped_state == 2) ? 0x1 : 0x2; | |
1772 | } | |
1773 | } else if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { | |
1774 | /* Information exceptions control mode page: TEST=1, MRIE=6 */ | |
c2248fc9 | 1775 | if (dsense) { |
c65b1445 DG |
1776 | arr[0] = 0x72; |
1777 | arr[1] = 0x0; /* NO_SENSE in sense_key */ | |
1778 | arr[2] = THRESHOLD_EXCEEDED; | |
84905d34 | 1779 | arr[3] = 0xff; /* Failure prediction(false) */ |
c2248fc9 | 1780 | len = 8; |
c65b1445 DG |
1781 | } else { |
1782 | arr[0] = 0x70; | |
1783 | arr[2] = 0x0; /* NO_SENSE in sense_key */ | |
1784 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
1785 | arr[12] = THRESHOLD_EXCEEDED; | |
84905d34 | 1786 | arr[13] = 0xff; /* Failure prediction(false) */ |
c65b1445 | 1787 | } |
84905d34 DG |
1788 | } else { /* nothing to report */ |
1789 | if (dsense) { | |
c65b1445 | 1790 | len = 8; |
84905d34 DG |
1791 | memset(arr, 0, len); |
1792 | arr[0] = 0x72; | |
c2248fc9 | 1793 | } else { |
84905d34 | 1794 | memset(arr, 0, len); |
c2248fc9 | 1795 | arr[0] = 0x70; |
c2248fc9 | 1796 | arr[7] = 0xa; |
c65b1445 DG |
1797 | } |
1798 | } | |
36e07d7e | 1799 | return fill_from_dev_buffer(scp, arr, min_t(u32, len, alloc_len)); |
1da177e4 LT |
1800 | } |
1801 | ||
fc13638a | 1802 | static int resp_start_stop(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
c65b1445 | 1803 | { |
01123ef4 | 1804 | unsigned char *cmd = scp->cmnd; |
fc13638a | 1805 | int power_cond, want_stop, stopped_state; |
4f2c8bf6 | 1806 | bool changing; |
c65b1445 | 1807 | |
c65b1445 DG |
1808 | power_cond = (cmd[4] & 0xf0) >> 4; |
1809 | if (power_cond) { | |
22017ed2 | 1810 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, 7); |
c65b1445 DG |
1811 | return check_condition_result; |
1812 | } | |
fc13638a DG |
1813 | want_stop = !(cmd[4] & 1); |
1814 | stopped_state = atomic_read(&devip->stopped); | |
1815 | if (stopped_state == 2) { | |
1816 | ktime_t now_ts = ktime_get_boottime(); | |
1817 | ||
1818 | if (ktime_to_ns(now_ts) > ktime_to_ns(devip->create_ts)) { | |
1819 | u64 diff_ns = ktime_to_ns(ktime_sub(now_ts, devip->create_ts)); | |
1820 | ||
1821 | if (diff_ns >= ((u64)sdeb_tur_ms_to_ready * 1000000)) { | |
1822 | /* tur_ms_to_ready timer extinguished */ | |
1823 | atomic_set(&devip->stopped, 0); | |
1824 | stopped_state = 0; | |
1825 | } | |
1826 | } | |
1827 | if (stopped_state == 2) { | |
1828 | if (want_stop) { | |
1829 | stopped_state = 1; /* dummy up success */ | |
1830 | } else { /* Disallow tur_ms_to_ready delay to be overridden */ | |
1831 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, 0 /* START bit */); | |
1832 | return check_condition_result; | |
1833 | } | |
1834 | } | |
1835 | } | |
1836 | changing = (stopped_state != want_stop); | |
1837 | if (changing) | |
1838 | atomic_xchg(&devip->stopped, want_stop); | |
1839 | if (!changing || (cmd[1] & 0x1)) /* state unchanged or IMMED bit set in cdb */ | |
4f2c8bf6 DG |
1840 | return SDEG_RES_IMMED_MASK; |
1841 | else | |
1842 | return 0; | |
c65b1445 DG |
1843 | } |
1844 | ||
28898873 FT |
1845 | static sector_t get_sdebug_capacity(void) |
1846 | { | |
773642d9 DG |
1847 | static const unsigned int gibibyte = 1073741824; |
1848 | ||
1849 | if (sdebug_virtual_gb > 0) | |
1850 | return (sector_t)sdebug_virtual_gb * | |
1851 | (gibibyte / sdebug_sector_size); | |
28898873 FT |
1852 | else |
1853 | return sdebug_store_sectors; | |
1854 | } | |
1855 | ||
1da177e4 | 1856 | #define SDEBUG_READCAP_ARR_SZ 8 |
91d4c752 JP |
1857 | static int resp_readcap(struct scsi_cmnd *scp, |
1858 | struct sdebug_dev_info *devip) | |
1da177e4 LT |
1859 | { |
1860 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; | |
c65b1445 | 1861 | unsigned int capac; |
1da177e4 | 1862 | |
c65b1445 | 1863 | /* following just in case virtual_gb changed */ |
28898873 | 1864 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 | 1865 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
c65b1445 DG |
1866 | if (sdebug_capacity < 0xffffffff) { |
1867 | capac = (unsigned int)sdebug_capacity - 1; | |
773642d9 DG |
1868 | put_unaligned_be32(capac, arr + 0); |
1869 | } else | |
1870 | put_unaligned_be32(0xffffffff, arr + 0); | |
1871 | put_unaligned_be16(sdebug_sector_size, arr + 6); | |
1da177e4 LT |
1872 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
1873 | } | |
1874 | ||
c65b1445 | 1875 | #define SDEBUG_READCAP16_ARR_SZ 32 |
91d4c752 JP |
1876 | static int resp_readcap16(struct scsi_cmnd *scp, |
1877 | struct sdebug_dev_info *devip) | |
c65b1445 | 1878 | { |
01123ef4 | 1879 | unsigned char *cmd = scp->cmnd; |
c65b1445 | 1880 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; |
4e3ace00 | 1881 | u32 alloc_len; |
c65b1445 | 1882 | |
773642d9 | 1883 | alloc_len = get_unaligned_be32(cmd + 10); |
c65b1445 | 1884 | /* following just in case virtual_gb changed */ |
28898873 | 1885 | sdebug_capacity = get_sdebug_capacity(); |
c65b1445 | 1886 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
773642d9 DG |
1887 | put_unaligned_be64((u64)(sdebug_capacity - 1), arr + 0); |
1888 | put_unaligned_be32(sdebug_sector_size, arr + 8); | |
1889 | arr[13] = sdebug_physblk_exp & 0xf; | |
1890 | arr[14] = (sdebug_lowest_aligned >> 8) & 0x3f; | |
44d92694 | 1891 | |
be1dd78d | 1892 | if (scsi_debug_lbp()) { |
5b94e232 | 1893 | arr[14] |= 0x80; /* LBPME */ |
760f3b03 DG |
1894 | /* from sbc4r07, this LBPRZ field is 1 bit, but the LBPRZ in |
1895 | * the LB Provisioning VPD page is 3 bits. Note that lbprz=2 | |
1896 | * in the wider field maps to 0 in this field. | |
1897 | */ | |
1898 | if (sdebug_lbprz & 1) /* precisely what the draft requires */ | |
1899 | arr[14] |= 0x40; | |
be1dd78d | 1900 | } |
44d92694 | 1901 | |
773642d9 | 1902 | arr[15] = sdebug_lowest_aligned & 0xff; |
c6a44287 | 1903 | |
760f3b03 | 1904 | if (have_dif_prot) { |
773642d9 | 1905 | arr[12] = (sdebug_dif - 1) << 1; /* P_TYPE */ |
c6a44287 MP |
1906 | arr[12] |= 1; /* PROT_EN */ |
1907 | } | |
1908 | ||
c65b1445 | 1909 | return fill_from_dev_buffer(scp, arr, |
4e3ace00 | 1910 | min_t(u32, alloc_len, SDEBUG_READCAP16_ARR_SZ)); |
c65b1445 DG |
1911 | } |
1912 | ||
5a09e398 HR |
1913 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
1914 | ||
91d4c752 JP |
1915 | static int resp_report_tgtpgs(struct scsi_cmnd *scp, |
1916 | struct sdebug_dev_info *devip) | |
5a09e398 | 1917 | { |
01123ef4 | 1918 | unsigned char *cmd = scp->cmnd; |
91d4c752 | 1919 | unsigned char *arr; |
5a09e398 | 1920 | int host_no = devip->sdbg_host->shost->host_no; |
5a09e398 | 1921 | int port_group_a, port_group_b, port_a, port_b; |
f347c268 YB |
1922 | u32 alen, n, rlen; |
1923 | int ret; | |
5a09e398 | 1924 | |
773642d9 | 1925 | alen = get_unaligned_be32(cmd + 6); |
6f3cbf55 DG |
1926 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
1927 | if (! arr) | |
1928 | return DID_REQUEUE << 16; | |
5a09e398 HR |
1929 | /* |
1930 | * EVPD page 0x88 states we have two ports, one | |
1931 | * real and a fake port with no device connected. | |
1932 | * So we create two port groups with one port each | |
1933 | * and set the group with port B to unavailable. | |
1934 | */ | |
1935 | port_a = 0x1; /* relative port A */ | |
1936 | port_b = 0x2; /* relative port B */ | |
1937 | port_group_a = (((host_no + 1) & 0x7f) << 8) + | |
773642d9 | 1938 | (devip->channel & 0x7f); |
5a09e398 | 1939 | port_group_b = (((host_no + 1) & 0x7f) << 8) + |
773642d9 | 1940 | (devip->channel & 0x7f) + 0x80; |
5a09e398 HR |
1941 | |
1942 | /* | |
1943 | * The asymmetric access state is cycled according to the host_id. | |
1944 | */ | |
1945 | n = 4; | |
b01f6f83 | 1946 | if (sdebug_vpd_use_hostno == 0) { |
773642d9 DG |
1947 | arr[n++] = host_no % 3; /* Asymm access state */ |
1948 | arr[n++] = 0x0F; /* claim: all states are supported */ | |
5a09e398 | 1949 | } else { |
773642d9 DG |
1950 | arr[n++] = 0x0; /* Active/Optimized path */ |
1951 | arr[n++] = 0x01; /* only support active/optimized paths */ | |
5a09e398 | 1952 | } |
773642d9 DG |
1953 | put_unaligned_be16(port_group_a, arr + n); |
1954 | n += 2; | |
5a09e398 HR |
1955 | arr[n++] = 0; /* Reserved */ |
1956 | arr[n++] = 0; /* Status code */ | |
1957 | arr[n++] = 0; /* Vendor unique */ | |
1958 | arr[n++] = 0x1; /* One port per group */ | |
1959 | arr[n++] = 0; /* Reserved */ | |
1960 | arr[n++] = 0; /* Reserved */ | |
773642d9 DG |
1961 | put_unaligned_be16(port_a, arr + n); |
1962 | n += 2; | |
5a09e398 HR |
1963 | arr[n++] = 3; /* Port unavailable */ |
1964 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ | |
773642d9 DG |
1965 | put_unaligned_be16(port_group_b, arr + n); |
1966 | n += 2; | |
5a09e398 HR |
1967 | arr[n++] = 0; /* Reserved */ |
1968 | arr[n++] = 0; /* Status code */ | |
1969 | arr[n++] = 0; /* Vendor unique */ | |
1970 | arr[n++] = 0x1; /* One port per group */ | |
1971 | arr[n++] = 0; /* Reserved */ | |
1972 | arr[n++] = 0; /* Reserved */ | |
773642d9 DG |
1973 | put_unaligned_be16(port_b, arr + n); |
1974 | n += 2; | |
5a09e398 HR |
1975 | |
1976 | rlen = n - 4; | |
773642d9 | 1977 | put_unaligned_be32(rlen, arr + 0); |
5a09e398 HR |
1978 | |
1979 | /* | |
1980 | * Return the smallest value of either | |
1981 | * - The allocated length | |
1982 | * - The constructed command length | |
1983 | * - The maximum array size | |
1984 | */ | |
f347c268 | 1985 | rlen = min(alen, n); |
5a09e398 | 1986 | ret = fill_from_dev_buffer(scp, arr, |
f347c268 | 1987 | min_t(u32, rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); |
5a09e398 HR |
1988 | kfree(arr); |
1989 | return ret; | |
1990 | } | |
1991 | ||
fd32119b DG |
1992 | static int resp_rsup_opcodes(struct scsi_cmnd *scp, |
1993 | struct sdebug_dev_info *devip) | |
38d5c833 DG |
1994 | { |
1995 | bool rctd; | |
1996 | u8 reporting_opts, req_opcode, sdeb_i, supp; | |
1997 | u16 req_sa, u; | |
1998 | u32 alloc_len, a_len; | |
1999 | int k, offset, len, errsts, count, bump, na; | |
2000 | const struct opcode_info_t *oip; | |
2001 | const struct opcode_info_t *r_oip; | |
2002 | u8 *arr; | |
2003 | u8 *cmd = scp->cmnd; | |
2004 | ||
2005 | rctd = !!(cmd[2] & 0x80); | |
2006 | reporting_opts = cmd[2] & 0x7; | |
2007 | req_opcode = cmd[3]; | |
2008 | req_sa = get_unaligned_be16(cmd + 4); | |
2009 | alloc_len = get_unaligned_be32(cmd + 6); | |
6d310dfb | 2010 | if (alloc_len < 4 || alloc_len > 0xffff) { |
38d5c833 DG |
2011 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); |
2012 | return check_condition_result; | |
2013 | } | |
2014 | if (alloc_len > 8192) | |
2015 | a_len = 8192; | |
2016 | else | |
2017 | a_len = alloc_len; | |
99531e60 | 2018 | arr = kzalloc((a_len < 256) ? 320 : a_len + 64, GFP_ATOMIC); |
38d5c833 DG |
2019 | if (NULL == arr) { |
2020 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
2021 | INSUFF_RES_ASCQ); | |
2022 | return check_condition_result; | |
2023 | } | |
2024 | switch (reporting_opts) { | |
2025 | case 0: /* all commands */ | |
2026 | /* count number of commands */ | |
2027 | for (count = 0, oip = opcode_info_arr; | |
2028 | oip->num_attached != 0xff; ++oip) { | |
2029 | if (F_INV_OP & oip->flags) | |
2030 | continue; | |
2031 | count += (oip->num_attached + 1); | |
2032 | } | |
2033 | bump = rctd ? 20 : 8; | |
2034 | put_unaligned_be32(count * bump, arr); | |
2035 | for (offset = 4, oip = opcode_info_arr; | |
2036 | oip->num_attached != 0xff && offset < a_len; ++oip) { | |
2037 | if (F_INV_OP & oip->flags) | |
2038 | continue; | |
2039 | na = oip->num_attached; | |
2040 | arr[offset] = oip->opcode; | |
2041 | put_unaligned_be16(oip->sa, arr + offset + 2); | |
2042 | if (rctd) | |
2043 | arr[offset + 5] |= 0x2; | |
2044 | if (FF_SA & oip->flags) | |
2045 | arr[offset + 5] |= 0x1; | |
2046 | put_unaligned_be16(oip->len_mask[0], arr + offset + 6); | |
2047 | if (rctd) | |
2048 | put_unaligned_be16(0xa, arr + offset + 8); | |
2049 | r_oip = oip; | |
2050 | for (k = 0, oip = oip->arrp; k < na; ++k, ++oip) { | |
2051 | if (F_INV_OP & oip->flags) | |
2052 | continue; | |
2053 | offset += bump; | |
2054 | arr[offset] = oip->opcode; | |
2055 | put_unaligned_be16(oip->sa, arr + offset + 2); | |
2056 | if (rctd) | |
2057 | arr[offset + 5] |= 0x2; | |
2058 | if (FF_SA & oip->flags) | |
2059 | arr[offset + 5] |= 0x1; | |
2060 | put_unaligned_be16(oip->len_mask[0], | |
2061 | arr + offset + 6); | |
2062 | if (rctd) | |
2063 | put_unaligned_be16(0xa, | |
2064 | arr + offset + 8); | |
2065 | } | |
2066 | oip = r_oip; | |
2067 | offset += bump; | |
2068 | } | |
2069 | break; | |
2070 | case 1: /* one command: opcode only */ | |
2071 | case 2: /* one command: opcode plus service action */ | |
2072 | case 3: /* one command: if sa==0 then opcode only else opcode+sa */ | |
2073 | sdeb_i = opcode_ind_arr[req_opcode]; | |
2074 | oip = &opcode_info_arr[sdeb_i]; | |
2075 | if (F_INV_OP & oip->flags) { | |
2076 | supp = 1; | |
2077 | offset = 4; | |
2078 | } else { | |
2079 | if (1 == reporting_opts) { | |
2080 | if (FF_SA & oip->flags) { | |
2081 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, | |
2082 | 2, 2); | |
2083 | kfree(arr); | |
2084 | return check_condition_result; | |
2085 | } | |
2086 | req_sa = 0; | |
2087 | } else if (2 == reporting_opts && | |
2088 | 0 == (FF_SA & oip->flags)) { | |
2089 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, -1); | |
2090 | kfree(arr); /* point at requested sa */ | |
2091 | return check_condition_result; | |
2092 | } | |
2093 | if (0 == (FF_SA & oip->flags) && | |
2094 | req_opcode == oip->opcode) | |
2095 | supp = 3; | |
2096 | else if (0 == (FF_SA & oip->flags)) { | |
2097 | na = oip->num_attached; | |
2098 | for (k = 0, oip = oip->arrp; k < na; | |
2099 | ++k, ++oip) { | |
2100 | if (req_opcode == oip->opcode) | |
2101 | break; | |
2102 | } | |
2103 | supp = (k >= na) ? 1 : 3; | |
2104 | } else if (req_sa != oip->sa) { | |
2105 | na = oip->num_attached; | |
2106 | for (k = 0, oip = oip->arrp; k < na; | |
2107 | ++k, ++oip) { | |
2108 | if (req_sa == oip->sa) | |
2109 | break; | |
2110 | } | |
2111 | supp = (k >= na) ? 1 : 3; | |
2112 | } else | |
2113 | supp = 3; | |
2114 | if (3 == supp) { | |
2115 | u = oip->len_mask[0]; | |
2116 | put_unaligned_be16(u, arr + 2); | |
2117 | arr[4] = oip->opcode; | |
2118 | for (k = 1; k < u; ++k) | |
2119 | arr[4 + k] = (k < 16) ? | |
2120 | oip->len_mask[k] : 0xff; | |
2121 | offset = 4 + u; | |
2122 | } else | |
2123 | offset = 4; | |
2124 | } | |
2125 | arr[1] = (rctd ? 0x80 : 0) | supp; | |
2126 | if (rctd) { | |
2127 | put_unaligned_be16(0xa, arr + offset); | |
2128 | offset += 12; | |
2129 | } | |
2130 | break; | |
2131 | default: | |
2132 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 2); | |
2133 | kfree(arr); | |
2134 | return check_condition_result; | |
2135 | } | |
2136 | offset = (offset < a_len) ? offset : a_len; | |
2137 | len = (offset < alloc_len) ? offset : alloc_len; | |
2138 | errsts = fill_from_dev_buffer(scp, arr, len); | |
2139 | kfree(arr); | |
2140 | return errsts; | |
2141 | } | |
2142 | ||
fd32119b DG |
2143 | static int resp_rsup_tmfs(struct scsi_cmnd *scp, |
2144 | struct sdebug_dev_info *devip) | |
38d5c833 DG |
2145 | { |
2146 | bool repd; | |
2147 | u32 alloc_len, len; | |
2148 | u8 arr[16]; | |
2149 | u8 *cmd = scp->cmnd; | |
2150 | ||
2151 | memset(arr, 0, sizeof(arr)); | |
2152 | repd = !!(cmd[2] & 0x80); | |
2153 | alloc_len = get_unaligned_be32(cmd + 6); | |
2154 | if (alloc_len < 4) { | |
2155 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); | |
2156 | return check_condition_result; | |
2157 | } | |
2158 | arr[0] = 0xc8; /* ATS | ATSS | LURS */ | |
2159 | arr[1] = 0x1; /* ITNRS */ | |
2160 | if (repd) { | |
2161 | arr[3] = 0xc; | |
2162 | len = 16; | |
2163 | } else | |
2164 | len = 4; | |
2165 | ||
2166 | len = (len < alloc_len) ? len : alloc_len; | |
2167 | return fill_from_dev_buffer(scp, arr, len); | |
2168 | } | |
2169 | ||
1da177e4 LT |
2170 | /* <<Following mode page info copied from ST318451LW>> */ |
2171 | ||
91d4c752 | 2172 | static int resp_err_recov_pg(unsigned char *p, int pcontrol, int target) |
1da177e4 LT |
2173 | { /* Read-Write Error Recovery page for mode_sense */ |
2174 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, | |
2175 | 5, 0, 0xff, 0xff}; | |
2176 | ||
2177 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); | |
2178 | if (1 == pcontrol) | |
2179 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); | |
2180 | return sizeof(err_recov_pg); | |
2181 | } | |
2182 | ||
91d4c752 | 2183 | static int resp_disconnect_pg(unsigned char *p, int pcontrol, int target) |
1da177e4 LT |
2184 | { /* Disconnect-Reconnect page for mode_sense */ |
2185 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, | |
2186 | 0, 0, 0, 0, 0, 0, 0, 0}; | |
2187 | ||
2188 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); | |
2189 | if (1 == pcontrol) | |
2190 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); | |
2191 | return sizeof(disconnect_pg); | |
2192 | } | |
2193 | ||
91d4c752 | 2194 | static int resp_format_pg(unsigned char *p, int pcontrol, int target) |
1da177e4 | 2195 | { /* Format device page for mode_sense */ |
597136ab MP |
2196 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
2197 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2198 | 0, 0, 0, 0, 0x40, 0, 0, 0}; | |
2199 | ||
2200 | memcpy(p, format_pg, sizeof(format_pg)); | |
773642d9 DG |
2201 | put_unaligned_be16(sdebug_sectors_per, p + 10); |
2202 | put_unaligned_be16(sdebug_sector_size, p + 12); | |
2203 | if (sdebug_removable) | |
597136ab MP |
2204 | p[20] |= 0x20; /* should agree with INQUIRY */ |
2205 | if (1 == pcontrol) | |
2206 | memset(p + 2, 0, sizeof(format_pg) - 2); | |
2207 | return sizeof(format_pg); | |
1da177e4 LT |
2208 | } |
2209 | ||
fd32119b DG |
2210 | static unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, |
2211 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, | |
2212 | 0, 0, 0, 0}; | |
2213 | ||
91d4c752 | 2214 | static int resp_caching_pg(unsigned char *p, int pcontrol, int target) |
1da177e4 | 2215 | { /* Caching page for mode_sense */ |
cbf67842 DG |
2216 | unsigned char ch_caching_pg[] = {/* 0x8, 18, */ 0x4, 0, 0, 0, 0, 0, |
2217 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; | |
2218 | unsigned char d_caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
1da177e4 LT |
2219 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; |
2220 | ||
773642d9 | 2221 | if (SDEBUG_OPT_N_WCE & sdebug_opts) |
cbf67842 | 2222 | caching_pg[2] &= ~0x4; /* set WCE=0 (default WCE=1) */ |
1da177e4 LT |
2223 | memcpy(p, caching_pg, sizeof(caching_pg)); |
2224 | if (1 == pcontrol) | |
cbf67842 DG |
2225 | memcpy(p + 2, ch_caching_pg, sizeof(ch_caching_pg)); |
2226 | else if (2 == pcontrol) | |
2227 | memcpy(p, d_caching_pg, sizeof(d_caching_pg)); | |
1da177e4 LT |
2228 | return sizeof(caching_pg); |
2229 | } | |
2230 | ||
fd32119b DG |
2231 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
2232 | 0, 0, 0x2, 0x4b}; | |
2233 | ||
91d4c752 | 2234 | static int resp_ctrl_m_pg(unsigned char *p, int pcontrol, int target) |
1da177e4 | 2235 | { /* Control mode page for mode_sense */ |
c65b1445 | 2236 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
9a051019 | 2237 | 0, 0, 0, 0}; |
c65b1445 | 2238 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
1da177e4 LT |
2239 | 0, 0, 0x2, 0x4b}; |
2240 | ||
773642d9 | 2241 | if (sdebug_dsense) |
1da177e4 | 2242 | ctrl_m_pg[2] |= 0x4; |
c65b1445 DG |
2243 | else |
2244 | ctrl_m_pg[2] &= ~0x4; | |
c6a44287 | 2245 | |
773642d9 | 2246 | if (sdebug_ato) |
c6a44287 MP |
2247 | ctrl_m_pg[5] |= 0x80; /* ATO=1 */ |
2248 | ||
1da177e4 LT |
2249 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
2250 | if (1 == pcontrol) | |
c65b1445 DG |
2251 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
2252 | else if (2 == pcontrol) | |
2253 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); | |
1da177e4 LT |
2254 | return sizeof(ctrl_m_pg); |
2255 | } | |
2256 | ||
c65b1445 | 2257 | |
91d4c752 | 2258 | static int resp_iec_m_pg(unsigned char *p, int pcontrol, int target) |
1da177e4 | 2259 | { /* Informational Exceptions control mode page for mode_sense */ |
c65b1445 DG |
2260 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
2261 | 0, 0, 0x0, 0x0}; | |
2262 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
2263 | 0, 0, 0x0, 0x0}; | |
2264 | ||
1da177e4 LT |
2265 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
2266 | if (1 == pcontrol) | |
c65b1445 DG |
2267 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
2268 | else if (2 == pcontrol) | |
2269 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); | |
1da177e4 LT |
2270 | return sizeof(iec_m_pg); |
2271 | } | |
2272 | ||
91d4c752 | 2273 | static int resp_sas_sf_m_pg(unsigned char *p, int pcontrol, int target) |
c65b1445 DG |
2274 | { /* SAS SSP mode page - short format for mode_sense */ |
2275 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, | |
2276 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; | |
2277 | ||
2278 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); | |
2279 | if (1 == pcontrol) | |
2280 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); | |
2281 | return sizeof(sas_sf_m_pg); | |
2282 | } | |
2283 | ||
2284 | ||
91d4c752 | 2285 | static int resp_sas_pcd_m_spg(unsigned char *p, int pcontrol, int target, |
c65b1445 DG |
2286 | int target_dev_id) |
2287 | { /* SAS phy control and discover mode page for mode_sense */ | |
2288 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, | |
2289 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
773642d9 DG |
2290 | 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ |
2291 | 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ | |
c65b1445 DG |
2292 | 0x2, 0, 0, 0, 0, 0, 0, 0, |
2293 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
2294 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2295 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
773642d9 DG |
2296 | 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ |
2297 | 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ | |
c65b1445 DG |
2298 | 0x3, 0, 0, 0, 0, 0, 0, 0, |
2299 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
2300 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2301 | }; | |
2302 | int port_a, port_b; | |
2303 | ||
1b37bd60 DG |
2304 | put_unaligned_be64(naa3_comp_a, sas_pcd_m_pg + 16); |
2305 | put_unaligned_be64(naa3_comp_c + 1, sas_pcd_m_pg + 24); | |
2306 | put_unaligned_be64(naa3_comp_a, sas_pcd_m_pg + 64); | |
2307 | put_unaligned_be64(naa3_comp_c + 1, sas_pcd_m_pg + 72); | |
c65b1445 DG |
2308 | port_a = target_dev_id + 1; |
2309 | port_b = port_a + 1; | |
2310 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); | |
773642d9 DG |
2311 | put_unaligned_be32(port_a, p + 20); |
2312 | put_unaligned_be32(port_b, p + 48 + 20); | |
c65b1445 DG |
2313 | if (1 == pcontrol) |
2314 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); | |
2315 | return sizeof(sas_pcd_m_pg); | |
2316 | } | |
2317 | ||
91d4c752 | 2318 | static int resp_sas_sha_m_spg(unsigned char *p, int pcontrol) |
c65b1445 DG |
2319 | { /* SAS SSP shared protocol specific port mode subpage */ |
2320 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, | |
2321 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2322 | }; | |
2323 | ||
2324 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); | |
2325 | if (1 == pcontrol) | |
2326 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); | |
2327 | return sizeof(sas_sha_m_pg); | |
2328 | } | |
2329 | ||
1da177e4 LT |
2330 | #define SDEBUG_MAX_MSENSE_SZ 256 |
2331 | ||
fd32119b DG |
2332 | static int resp_mode_sense(struct scsi_cmnd *scp, |
2333 | struct sdebug_dev_info *devip) | |
1da177e4 | 2334 | { |
23183910 | 2335 | int pcontrol, pcode, subpcode, bd_len; |
1da177e4 | 2336 | unsigned char dev_spec; |
36e07d7e GK |
2337 | u32 alloc_len, offset, len; |
2338 | int target_dev_id; | |
c2248fc9 | 2339 | int target = scp->device->id; |
91d4c752 | 2340 | unsigned char *ap; |
1da177e4 | 2341 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; |
01123ef4 | 2342 | unsigned char *cmd = scp->cmnd; |
d36da305 | 2343 | bool dbd, llbaa, msense_6, is_disk, is_zbc, bad_pcode; |
1da177e4 | 2344 | |
760f3b03 | 2345 | dbd = !!(cmd[1] & 0x8); /* disable block descriptors */ |
1da177e4 LT |
2346 | pcontrol = (cmd[2] & 0xc0) >> 6; |
2347 | pcode = cmd[2] & 0x3f; | |
2348 | subpcode = cmd[3]; | |
2349 | msense_6 = (MODE_SENSE == cmd[0]); | |
760f3b03 DG |
2350 | llbaa = msense_6 ? false : !!(cmd[1] & 0x10); |
2351 | is_disk = (sdebug_ptype == TYPE_DISK); | |
64e14ece | 2352 | is_zbc = (devip->zmodel != BLK_ZONED_NONE); |
d36da305 | 2353 | if ((is_disk || is_zbc) && !dbd) |
23183910 DG |
2354 | bd_len = llbaa ? 16 : 8; |
2355 | else | |
2356 | bd_len = 0; | |
773642d9 | 2357 | alloc_len = msense_6 ? cmd[4] : get_unaligned_be16(cmd + 7); |
1da177e4 LT |
2358 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); |
2359 | if (0x3 == pcontrol) { /* Saving values not supported */ | |
cbf67842 | 2360 | mk_sense_buffer(scp, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, 0); |
1da177e4 LT |
2361 | return check_condition_result; |
2362 | } | |
c65b1445 DG |
2363 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
2364 | (devip->target * 1000) - 3; | |
d36da305 DG |
2365 | /* for disks+zbc set DPOFUA bit and clear write protect (WP) bit */ |
2366 | if (is_disk || is_zbc) { | |
b01f6f83 | 2367 | dev_spec = 0x10; /* =0x90 if WP=1 implies read-only */ |
9447b6ce MP |
2368 | if (sdebug_wp) |
2369 | dev_spec |= 0x80; | |
2370 | } else | |
23183910 | 2371 | dev_spec = 0x0; |
1da177e4 LT |
2372 | if (msense_6) { |
2373 | arr[2] = dev_spec; | |
23183910 | 2374 | arr[3] = bd_len; |
1da177e4 LT |
2375 | offset = 4; |
2376 | } else { | |
2377 | arr[3] = dev_spec; | |
23183910 DG |
2378 | if (16 == bd_len) |
2379 | arr[4] = 0x1; /* set LONGLBA bit */ | |
2380 | arr[7] = bd_len; /* assume 255 or less */ | |
1da177e4 LT |
2381 | offset = 8; |
2382 | } | |
2383 | ap = arr + offset; | |
28898873 FT |
2384 | if ((bd_len > 0) && (!sdebug_capacity)) |
2385 | sdebug_capacity = get_sdebug_capacity(); | |
2386 | ||
23183910 | 2387 | if (8 == bd_len) { |
773642d9 DG |
2388 | if (sdebug_capacity > 0xfffffffe) |
2389 | put_unaligned_be32(0xffffffff, ap + 0); | |
2390 | else | |
2391 | put_unaligned_be32(sdebug_capacity, ap + 0); | |
2392 | put_unaligned_be16(sdebug_sector_size, ap + 6); | |
23183910 DG |
2393 | offset += bd_len; |
2394 | ap = arr + offset; | |
2395 | } else if (16 == bd_len) { | |
773642d9 DG |
2396 | put_unaligned_be64((u64)sdebug_capacity, ap + 0); |
2397 | put_unaligned_be32(sdebug_sector_size, ap + 12); | |
23183910 DG |
2398 | offset += bd_len; |
2399 | ap = arr + offset; | |
2400 | } | |
1da177e4 | 2401 | |
c65b1445 DG |
2402 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
2403 | /* TODO: Control Extension page */ | |
22017ed2 | 2404 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
1da177e4 LT |
2405 | return check_condition_result; |
2406 | } | |
760f3b03 DG |
2407 | bad_pcode = false; |
2408 | ||
1da177e4 LT |
2409 | switch (pcode) { |
2410 | case 0x1: /* Read-Write error recovery page, direct access */ | |
2411 | len = resp_err_recov_pg(ap, pcontrol, target); | |
2412 | offset += len; | |
2413 | break; | |
2414 | case 0x2: /* Disconnect-Reconnect page, all devices */ | |
2415 | len = resp_disconnect_pg(ap, pcontrol, target); | |
2416 | offset += len; | |
2417 | break; | |
9a051019 | 2418 | case 0x3: /* Format device page, direct access */ |
760f3b03 DG |
2419 | if (is_disk) { |
2420 | len = resp_format_pg(ap, pcontrol, target); | |
2421 | offset += len; | |
2422 | } else | |
2423 | bad_pcode = true; | |
9a051019 | 2424 | break; |
1da177e4 | 2425 | case 0x8: /* Caching page, direct access */ |
d36da305 | 2426 | if (is_disk || is_zbc) { |
760f3b03 DG |
2427 | len = resp_caching_pg(ap, pcontrol, target); |
2428 | offset += len; | |
2429 | } else | |
2430 | bad_pcode = true; | |
1da177e4 LT |
2431 | break; |
2432 | case 0xa: /* Control Mode page, all devices */ | |
2433 | len = resp_ctrl_m_pg(ap, pcontrol, target); | |
2434 | offset += len; | |
2435 | break; | |
c65b1445 DG |
2436 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
2437 | if ((subpcode > 0x2) && (subpcode < 0xff)) { | |
22017ed2 | 2438 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
c65b1445 | 2439 | return check_condition_result; |
9a051019 | 2440 | } |
c65b1445 DG |
2441 | len = 0; |
2442 | if ((0x0 == subpcode) || (0xff == subpcode)) | |
2443 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
2444 | if ((0x1 == subpcode) || (0xff == subpcode)) | |
2445 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, | |
2446 | target_dev_id); | |
2447 | if ((0x2 == subpcode) || (0xff == subpcode)) | |
2448 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
2449 | offset += len; | |
2450 | break; | |
1da177e4 LT |
2451 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
2452 | len = resp_iec_m_pg(ap, pcontrol, target); | |
2453 | offset += len; | |
2454 | break; | |
2455 | case 0x3f: /* Read all Mode pages */ | |
c65b1445 DG |
2456 | if ((0 == subpcode) || (0xff == subpcode)) { |
2457 | len = resp_err_recov_pg(ap, pcontrol, target); | |
2458 | len += resp_disconnect_pg(ap + len, pcontrol, target); | |
760f3b03 DG |
2459 | if (is_disk) { |
2460 | len += resp_format_pg(ap + len, pcontrol, | |
2461 | target); | |
2462 | len += resp_caching_pg(ap + len, pcontrol, | |
2463 | target); | |
d36da305 DG |
2464 | } else if (is_zbc) { |
2465 | len += resp_caching_pg(ap + len, pcontrol, | |
2466 | target); | |
760f3b03 | 2467 | } |
c65b1445 DG |
2468 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); |
2469 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
2470 | if (0xff == subpcode) { | |
2471 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, | |
2472 | target, target_dev_id); | |
2473 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
2474 | } | |
2475 | len += resp_iec_m_pg(ap + len, pcontrol, target); | |
760f3b03 | 2476 | offset += len; |
c65b1445 | 2477 | } else { |
22017ed2 | 2478 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
c65b1445 | 2479 | return check_condition_result; |
9a051019 | 2480 | } |
1da177e4 LT |
2481 | break; |
2482 | default: | |
760f3b03 DG |
2483 | bad_pcode = true; |
2484 | break; | |
2485 | } | |
2486 | if (bad_pcode) { | |
22017ed2 | 2487 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
1da177e4 LT |
2488 | return check_condition_result; |
2489 | } | |
2490 | if (msense_6) | |
2491 | arr[0] = offset - 1; | |
773642d9 DG |
2492 | else |
2493 | put_unaligned_be16((offset - 2), arr + 0); | |
36e07d7e | 2494 | return fill_from_dev_buffer(scp, arr, min_t(u32, alloc_len, offset)); |
1da177e4 LT |
2495 | } |
2496 | ||
c65b1445 DG |
2497 | #define SDEBUG_MAX_MSELECT_SZ 512 |
2498 | ||
fd32119b DG |
2499 | static int resp_mode_select(struct scsi_cmnd *scp, |
2500 | struct sdebug_dev_info *devip) | |
c65b1445 DG |
2501 | { |
2502 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; | |
c2248fc9 | 2503 | int param_len, res, mpage; |
c65b1445 | 2504 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; |
01123ef4 | 2505 | unsigned char *cmd = scp->cmnd; |
c2248fc9 | 2506 | int mselect6 = (MODE_SELECT == cmd[0]); |
c65b1445 | 2507 | |
c65b1445 DG |
2508 | memset(arr, 0, sizeof(arr)); |
2509 | pf = cmd[1] & 0x10; | |
2510 | sp = cmd[1] & 0x1; | |
773642d9 | 2511 | param_len = mselect6 ? cmd[4] : get_unaligned_be16(cmd + 7); |
c65b1445 | 2512 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { |
22017ed2 | 2513 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, mselect6 ? 4 : 7, -1); |
c65b1445 DG |
2514 | return check_condition_result; |
2515 | } | |
9a051019 DG |
2516 | res = fetch_to_dev_buffer(scp, arr, param_len); |
2517 | if (-1 == res) | |
773642d9 DG |
2518 | return DID_ERROR << 16; |
2519 | else if (sdebug_verbose && (res < param_len)) | |
cbf67842 DG |
2520 | sdev_printk(KERN_INFO, scp->device, |
2521 | "%s: cdb indicated=%d, IO sent=%d bytes\n", | |
2522 | __func__, param_len, res); | |
773642d9 DG |
2523 | md_len = mselect6 ? (arr[0] + 1) : (get_unaligned_be16(arr + 0) + 2); |
2524 | bd_len = mselect6 ? arr[3] : get_unaligned_be16(arr + 6); | |
e0a2c28d GK |
2525 | off = bd_len + (mselect6 ? 4 : 8); |
2526 | if (md_len > 2 || off >= res) { | |
22017ed2 | 2527 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, 0, -1); |
c65b1445 DG |
2528 | return check_condition_result; |
2529 | } | |
c65b1445 DG |
2530 | mpage = arr[off] & 0x3f; |
2531 | ps = !!(arr[off] & 0x80); | |
2532 | if (ps) { | |
22017ed2 | 2533 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 7); |
c65b1445 DG |
2534 | return check_condition_result; |
2535 | } | |
2536 | spf = !!(arr[off] & 0x40); | |
773642d9 | 2537 | pg_len = spf ? (get_unaligned_be16(arr + off + 2) + 4) : |
c65b1445 DG |
2538 | (arr[off + 1] + 2); |
2539 | if ((pg_len + off) > param_len) { | |
cbf67842 | 2540 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
c65b1445 DG |
2541 | PARAMETER_LIST_LENGTH_ERR, 0); |
2542 | return check_condition_result; | |
2543 | } | |
2544 | switch (mpage) { | |
cbf67842 DG |
2545 | case 0x8: /* Caching Mode page */ |
2546 | if (caching_pg[1] == arr[off + 1]) { | |
2547 | memcpy(caching_pg + 2, arr + off + 2, | |
2548 | sizeof(caching_pg) - 2); | |
2549 | goto set_mode_changed_ua; | |
2550 | } | |
2551 | break; | |
c65b1445 DG |
2552 | case 0xa: /* Control Mode page */ |
2553 | if (ctrl_m_pg[1] == arr[off + 1]) { | |
2554 | memcpy(ctrl_m_pg + 2, arr + off + 2, | |
2555 | sizeof(ctrl_m_pg) - 2); | |
9447b6ce MP |
2556 | if (ctrl_m_pg[4] & 0x8) |
2557 | sdebug_wp = true; | |
2558 | else | |
2559 | sdebug_wp = false; | |
773642d9 | 2560 | sdebug_dsense = !!(ctrl_m_pg[2] & 0x4); |
cbf67842 | 2561 | goto set_mode_changed_ua; |
c65b1445 DG |
2562 | } |
2563 | break; | |
2564 | case 0x1c: /* Informational Exceptions Mode page */ | |
2565 | if (iec_m_pg[1] == arr[off + 1]) { | |
2566 | memcpy(iec_m_pg + 2, arr + off + 2, | |
2567 | sizeof(iec_m_pg) - 2); | |
cbf67842 | 2568 | goto set_mode_changed_ua; |
c65b1445 DG |
2569 | } |
2570 | break; | |
2571 | default: | |
2572 | break; | |
2573 | } | |
22017ed2 | 2574 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 5); |
c65b1445 | 2575 | return check_condition_result; |
cbf67842 DG |
2576 | set_mode_changed_ua: |
2577 | set_bit(SDEBUG_UA_MODE_CHANGED, devip->uas_bm); | |
2578 | return 0; | |
c65b1445 DG |
2579 | } |
2580 | ||
91d4c752 | 2581 | static int resp_temp_l_pg(unsigned char *arr) |
c65b1445 DG |
2582 | { |
2583 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, | |
2584 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, | |
2585 | }; | |
2586 | ||
9a051019 DG |
2587 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); |
2588 | return sizeof(temp_l_pg); | |
c65b1445 DG |
2589 | } |
2590 | ||
91d4c752 | 2591 | static int resp_ie_l_pg(unsigned char *arr) |
c65b1445 DG |
2592 | { |
2593 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, | |
2594 | }; | |
2595 | ||
9a051019 | 2596 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); |
c65b1445 DG |
2597 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ |
2598 | arr[4] = THRESHOLD_EXCEEDED; | |
2599 | arr[5] = 0xff; | |
2600 | } | |
9a051019 | 2601 | return sizeof(ie_l_pg); |
c65b1445 DG |
2602 | } |
2603 | ||
0790797a DG |
2604 | static int resp_env_rep_l_spg(unsigned char *arr) |
2605 | { | |
2606 | unsigned char env_rep_l_spg[] = {0x0, 0x0, 0x23, 0x8, | |
2607 | 0x0, 40, 72, 0xff, 45, 18, 0, 0, | |
2608 | 0x1, 0x0, 0x23, 0x8, | |
2609 | 0x0, 55, 72, 35, 55, 45, 0, 0, | |
2610 | }; | |
2611 | ||
2612 | memcpy(arr, env_rep_l_spg, sizeof(env_rep_l_spg)); | |
2613 | return sizeof(env_rep_l_spg); | |
2614 | } | |
2615 | ||
c65b1445 DG |
2616 | #define SDEBUG_MAX_LSENSE_SZ 512 |
2617 | ||
9a051019 DG |
2618 | static int resp_log_sense(struct scsi_cmnd *scp, |
2619 | struct sdebug_dev_info *devip) | |
c65b1445 | 2620 | { |
36e07d7e GK |
2621 | int ppc, sp, pcode, subpcode; |
2622 | u32 alloc_len, len, n; | |
c65b1445 | 2623 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
01123ef4 | 2624 | unsigned char *cmd = scp->cmnd; |
c65b1445 | 2625 | |
c65b1445 DG |
2626 | memset(arr, 0, sizeof(arr)); |
2627 | ppc = cmd[1] & 0x2; | |
2628 | sp = cmd[1] & 0x1; | |
2629 | if (ppc || sp) { | |
22017ed2 | 2630 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, ppc ? 1 : 0); |
c65b1445 DG |
2631 | return check_condition_result; |
2632 | } | |
c65b1445 | 2633 | pcode = cmd[2] & 0x3f; |
23183910 | 2634 | subpcode = cmd[3] & 0xff; |
773642d9 | 2635 | alloc_len = get_unaligned_be16(cmd + 7); |
c65b1445 | 2636 | arr[0] = pcode; |
23183910 DG |
2637 | if (0 == subpcode) { |
2638 | switch (pcode) { | |
2639 | case 0x0: /* Supported log pages log page */ | |
2640 | n = 4; | |
2641 | arr[n++] = 0x0; /* this page */ | |
2642 | arr[n++] = 0xd; /* Temperature */ | |
2643 | arr[n++] = 0x2f; /* Informational exceptions */ | |
2644 | arr[3] = n - 4; | |
2645 | break; | |
2646 | case 0xd: /* Temperature log page */ | |
2647 | arr[3] = resp_temp_l_pg(arr + 4); | |
2648 | break; | |
2649 | case 0x2f: /* Informational exceptions log page */ | |
2650 | arr[3] = resp_ie_l_pg(arr + 4); | |
2651 | break; | |
2652 | default: | |
22017ed2 | 2653 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
23183910 DG |
2654 | return check_condition_result; |
2655 | } | |
2656 | } else if (0xff == subpcode) { | |
2657 | arr[0] |= 0x40; | |
2658 | arr[1] = subpcode; | |
2659 | switch (pcode) { | |
2660 | case 0x0: /* Supported log pages and subpages log page */ | |
2661 | n = 4; | |
2662 | arr[n++] = 0x0; | |
2663 | arr[n++] = 0x0; /* 0,0 page */ | |
2664 | arr[n++] = 0x0; | |
2665 | arr[n++] = 0xff; /* this page */ | |
2666 | arr[n++] = 0xd; | |
2667 | arr[n++] = 0x0; /* Temperature */ | |
0790797a DG |
2668 | arr[n++] = 0xd; |
2669 | arr[n++] = 0x1; /* Environment reporting */ | |
2670 | arr[n++] = 0xd; | |
2671 | arr[n++] = 0xff; /* all 0xd subpages */ | |
23183910 DG |
2672 | arr[n++] = 0x2f; |
2673 | arr[n++] = 0x0; /* Informational exceptions */ | |
0790797a DG |
2674 | arr[n++] = 0x2f; |
2675 | arr[n++] = 0xff; /* all 0x2f subpages */ | |
23183910 DG |
2676 | arr[3] = n - 4; |
2677 | break; | |
2678 | case 0xd: /* Temperature subpages */ | |
2679 | n = 4; | |
2680 | arr[n++] = 0xd; | |
2681 | arr[n++] = 0x0; /* Temperature */ | |
0790797a DG |
2682 | arr[n++] = 0xd; |
2683 | arr[n++] = 0x1; /* Environment reporting */ | |
2684 | arr[n++] = 0xd; | |
2685 | arr[n++] = 0xff; /* these subpages */ | |
23183910 DG |
2686 | arr[3] = n - 4; |
2687 | break; | |
2688 | case 0x2f: /* Informational exceptions subpages */ | |
2689 | n = 4; | |
2690 | arr[n++] = 0x2f; | |
2691 | arr[n++] = 0x0; /* Informational exceptions */ | |
0790797a DG |
2692 | arr[n++] = 0x2f; |
2693 | arr[n++] = 0xff; /* these subpages */ | |
23183910 DG |
2694 | arr[3] = n - 4; |
2695 | break; | |
2696 | default: | |
22017ed2 | 2697 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
23183910 DG |
2698 | return check_condition_result; |
2699 | } | |
0790797a DG |
2700 | } else if (subpcode > 0) { |
2701 | arr[0] |= 0x40; | |
2702 | arr[1] = subpcode; | |
2703 | if (pcode == 0xd && subpcode == 1) | |
2704 | arr[3] = resp_env_rep_l_spg(arr + 4); | |
2705 | else { | |
2706 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); | |
2707 | return check_condition_result; | |
2708 | } | |
23183910 | 2709 | } else { |
22017ed2 | 2710 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
c65b1445 DG |
2711 | return check_condition_result; |
2712 | } | |
36e07d7e | 2713 | len = min_t(u32, get_unaligned_be16(arr + 2) + 4, alloc_len); |
c65b1445 | 2714 | return fill_from_dev_buffer(scp, arr, |
36e07d7e | 2715 | min_t(u32, len, SDEBUG_MAX_INQ_ARR_SZ)); |
c65b1445 DG |
2716 | } |
2717 | ||
f0d1cf93 DG |
2718 | static inline bool sdebug_dev_is_zoned(struct sdebug_dev_info *devip) |
2719 | { | |
2720 | return devip->nr_zones != 0; | |
2721 | } | |
2722 | ||
2723 | static struct sdeb_zone_state *zbc_zone(struct sdebug_dev_info *devip, | |
2724 | unsigned long long lba) | |
2725 | { | |
4a5fc1c6 DLM |
2726 | u32 zno = lba >> devip->zsize_shift; |
2727 | struct sdeb_zone_state *zsp; | |
2728 | ||
2729 | if (devip->zcap == devip->zsize || zno < devip->nr_conv_zones) | |
2730 | return &devip->zstate[zno]; | |
2731 | ||
2732 | /* | |
2733 | * If the zone capacity is less than the zone size, adjust for gap | |
2734 | * zones. | |
2735 | */ | |
2736 | zno = 2 * zno - devip->nr_conv_zones; | |
2737 | WARN_ONCE(zno >= devip->nr_zones, "%u > %u\n", zno, devip->nr_zones); | |
2738 | zsp = &devip->zstate[zno]; | |
2739 | if (lba >= zsp->z_start + zsp->z_size) | |
2740 | zsp++; | |
2741 | WARN_ON_ONCE(lba >= zsp->z_start + zsp->z_size); | |
2742 | return zsp; | |
f0d1cf93 DG |
2743 | } |
2744 | ||
2745 | static inline bool zbc_zone_is_conv(struct sdeb_zone_state *zsp) | |
2746 | { | |
35dbe2b9 | 2747 | return zsp->z_type == ZBC_ZTYPE_CNV; |
f0d1cf93 DG |
2748 | } |
2749 | ||
4a5fc1c6 DLM |
2750 | static inline bool zbc_zone_is_gap(struct sdeb_zone_state *zsp) |
2751 | { | |
2752 | return zsp->z_type == ZBC_ZTYPE_GAP; | |
2753 | } | |
2754 | ||
2755 | static inline bool zbc_zone_is_seq(struct sdeb_zone_state *zsp) | |
2756 | { | |
2757 | return !zbc_zone_is_conv(zsp) && !zbc_zone_is_gap(zsp); | |
2758 | } | |
2759 | ||
f0d1cf93 DG |
2760 | static void zbc_close_zone(struct sdebug_dev_info *devip, |
2761 | struct sdeb_zone_state *zsp) | |
2762 | { | |
2763 | enum sdebug_z_cond zc; | |
2764 | ||
4a5fc1c6 | 2765 | if (!zbc_zone_is_seq(zsp)) |
f0d1cf93 DG |
2766 | return; |
2767 | ||
2768 | zc = zsp->z_cond; | |
2769 | if (!(zc == ZC2_IMPLICIT_OPEN || zc == ZC3_EXPLICIT_OPEN)) | |
2770 | return; | |
2771 | ||
2772 | if (zc == ZC2_IMPLICIT_OPEN) | |
2773 | devip->nr_imp_open--; | |
2774 | else | |
2775 | devip->nr_exp_open--; | |
2776 | ||
2777 | if (zsp->z_wp == zsp->z_start) { | |
2778 | zsp->z_cond = ZC1_EMPTY; | |
2779 | } else { | |
2780 | zsp->z_cond = ZC4_CLOSED; | |
2781 | devip->nr_closed++; | |
2782 | } | |
2783 | } | |
2784 | ||
2785 | static void zbc_close_imp_open_zone(struct sdebug_dev_info *devip) | |
2786 | { | |
2787 | struct sdeb_zone_state *zsp = &devip->zstate[0]; | |
2788 | unsigned int i; | |
2789 | ||
2790 | for (i = 0; i < devip->nr_zones; i++, zsp++) { | |
2791 | if (zsp->z_cond == ZC2_IMPLICIT_OPEN) { | |
2792 | zbc_close_zone(devip, zsp); | |
2793 | return; | |
2794 | } | |
2795 | } | |
2796 | } | |
2797 | ||
2798 | static void zbc_open_zone(struct sdebug_dev_info *devip, | |
2799 | struct sdeb_zone_state *zsp, bool explicit) | |
2800 | { | |
2801 | enum sdebug_z_cond zc; | |
2802 | ||
4a5fc1c6 | 2803 | if (!zbc_zone_is_seq(zsp)) |
f0d1cf93 DG |
2804 | return; |
2805 | ||
2806 | zc = zsp->z_cond; | |
2807 | if ((explicit && zc == ZC3_EXPLICIT_OPEN) || | |
2808 | (!explicit && zc == ZC2_IMPLICIT_OPEN)) | |
2809 | return; | |
2810 | ||
2811 | /* Close an implicit open zone if necessary */ | |
2812 | if (explicit && zsp->z_cond == ZC2_IMPLICIT_OPEN) | |
2813 | zbc_close_zone(devip, zsp); | |
2814 | else if (devip->max_open && | |
2815 | devip->nr_imp_open + devip->nr_exp_open >= devip->max_open) | |
2816 | zbc_close_imp_open_zone(devip); | |
2817 | ||
2818 | if (zsp->z_cond == ZC4_CLOSED) | |
2819 | devip->nr_closed--; | |
2820 | if (explicit) { | |
2821 | zsp->z_cond = ZC3_EXPLICIT_OPEN; | |
2822 | devip->nr_exp_open++; | |
2823 | } else { | |
2824 | zsp->z_cond = ZC2_IMPLICIT_OPEN; | |
2825 | devip->nr_imp_open++; | |
2826 | } | |
2827 | } | |
2828 | ||
566d3c57 DLM |
2829 | static inline void zbc_set_zone_full(struct sdebug_dev_info *devip, |
2830 | struct sdeb_zone_state *zsp) | |
2831 | { | |
2832 | switch (zsp->z_cond) { | |
2833 | case ZC2_IMPLICIT_OPEN: | |
2834 | devip->nr_imp_open--; | |
2835 | break; | |
2836 | case ZC3_EXPLICIT_OPEN: | |
2837 | devip->nr_exp_open--; | |
2838 | break; | |
2839 | default: | |
2840 | WARN_ONCE(true, "Invalid zone %llu condition %x\n", | |
2841 | zsp->z_start, zsp->z_cond); | |
2842 | break; | |
2843 | } | |
2844 | zsp->z_cond = ZC5_FULL; | |
2845 | } | |
2846 | ||
f0d1cf93 DG |
2847 | static void zbc_inc_wp(struct sdebug_dev_info *devip, |
2848 | unsigned long long lba, unsigned int num) | |
2849 | { | |
2850 | struct sdeb_zone_state *zsp = zbc_zone(devip, lba); | |
64e14ece | 2851 | unsigned long long n, end, zend = zsp->z_start + zsp->z_size; |
f0d1cf93 | 2852 | |
4a5fc1c6 | 2853 | if (!zbc_zone_is_seq(zsp)) |
f0d1cf93 DG |
2854 | return; |
2855 | ||
35dbe2b9 | 2856 | if (zsp->z_type == ZBC_ZTYPE_SWR) { |
64e14ece DLM |
2857 | zsp->z_wp += num; |
2858 | if (zsp->z_wp >= zend) | |
566d3c57 | 2859 | zbc_set_zone_full(devip, zsp); |
64e14ece DLM |
2860 | return; |
2861 | } | |
2862 | ||
2863 | while (num) { | |
2864 | if (lba != zsp->z_wp) | |
2865 | zsp->z_non_seq_resource = true; | |
2866 | ||
2867 | end = lba + num; | |
2868 | if (end >= zend) { | |
2869 | n = zend - lba; | |
2870 | zsp->z_wp = zend; | |
2871 | } else if (end > zsp->z_wp) { | |
2872 | n = num; | |
2873 | zsp->z_wp = end; | |
2874 | } else { | |
2875 | n = num; | |
2876 | } | |
2877 | if (zsp->z_wp >= zend) | |
566d3c57 | 2878 | zbc_set_zone_full(devip, zsp); |
64e14ece DLM |
2879 | |
2880 | num -= n; | |
2881 | lba += n; | |
2882 | if (num) { | |
2883 | zsp++; | |
2884 | zend = zsp->z_start + zsp->z_size; | |
2885 | } | |
2886 | } | |
f0d1cf93 DG |
2887 | } |
2888 | ||
2889 | static int check_zbc_access_params(struct scsi_cmnd *scp, | |
2890 | unsigned long long lba, unsigned int num, bool write) | |
2891 | { | |
2892 | struct scsi_device *sdp = scp->device; | |
2893 | struct sdebug_dev_info *devip = (struct sdebug_dev_info *)sdp->hostdata; | |
2894 | struct sdeb_zone_state *zsp = zbc_zone(devip, lba); | |
2895 | struct sdeb_zone_state *zsp_end = zbc_zone(devip, lba + num - 1); | |
2896 | ||
2897 | if (!write) { | |
64e14ece DLM |
2898 | if (devip->zmodel == BLK_ZONED_HA) |
2899 | return 0; | |
2900 | /* For host-managed, reads cannot cross zone types boundaries */ | |
4a5fc1c6 | 2901 | if (zsp->z_type != zsp_end->z_type) { |
f0d1cf93 DG |
2902 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
2903 | LBA_OUT_OF_RANGE, | |
2904 | READ_INVDATA_ASCQ); | |
2905 | return check_condition_result; | |
2906 | } | |
2907 | return 0; | |
2908 | } | |
2909 | ||
4a5fc1c6 DLM |
2910 | /* Writing into a gap zone is not allowed */ |
2911 | if (zbc_zone_is_gap(zsp)) { | |
2912 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, | |
2913 | ATTEMPT_ACCESS_GAP); | |
2914 | return check_condition_result; | |
2915 | } | |
2916 | ||
f0d1cf93 DG |
2917 | /* No restrictions for writes within conventional zones */ |
2918 | if (zbc_zone_is_conv(zsp)) { | |
2919 | if (!zbc_zone_is_conv(zsp_end)) { | |
2920 | mk_sense_buffer(scp, ILLEGAL_REQUEST, | |
2921 | LBA_OUT_OF_RANGE, | |
2922 | WRITE_BOUNDARY_ASCQ); | |
2923 | return check_condition_result; | |
2924 | } | |
2925 | return 0; | |
2926 | } | |
2927 | ||
35dbe2b9 | 2928 | if (zsp->z_type == ZBC_ZTYPE_SWR) { |
64e14ece DLM |
2929 | /* Writes cannot cross sequential zone boundaries */ |
2930 | if (zsp_end != zsp) { | |
2931 | mk_sense_buffer(scp, ILLEGAL_REQUEST, | |
2932 | LBA_OUT_OF_RANGE, | |
2933 | WRITE_BOUNDARY_ASCQ); | |
2934 | return check_condition_result; | |
2935 | } | |
2936 | /* Cannot write full zones */ | |
2937 | if (zsp->z_cond == ZC5_FULL) { | |
2938 | mk_sense_buffer(scp, ILLEGAL_REQUEST, | |
2939 | INVALID_FIELD_IN_CDB, 0); | |
2940 | return check_condition_result; | |
2941 | } | |
2942 | /* Writes must be aligned to the zone WP */ | |
2943 | if (lba != zsp->z_wp) { | |
2944 | mk_sense_buffer(scp, ILLEGAL_REQUEST, | |
2945 | LBA_OUT_OF_RANGE, | |
2946 | UNALIGNED_WRITE_ASCQ); | |
2947 | return check_condition_result; | |
2948 | } | |
f0d1cf93 DG |
2949 | } |
2950 | ||
2951 | /* Handle implicit open of closed and empty zones */ | |
2952 | if (zsp->z_cond == ZC1_EMPTY || zsp->z_cond == ZC4_CLOSED) { | |
2953 | if (devip->max_open && | |
2954 | devip->nr_exp_open >= devip->max_open) { | |
2955 | mk_sense_buffer(scp, DATA_PROTECT, | |
2956 | INSUFF_RES_ASC, | |
2957 | INSUFF_ZONE_ASCQ); | |
2958 | return check_condition_result; | |
2959 | } | |
2960 | zbc_open_zone(devip, zsp, false); | |
2961 | } | |
2962 | ||
2963 | return 0; | |
2964 | } | |
2965 | ||
2966 | static inline int check_device_access_params | |
2967 | (struct scsi_cmnd *scp, unsigned long long lba, | |
2968 | unsigned int num, bool write) | |
1da177e4 | 2969 | { |
f0d1cf93 DG |
2970 | struct scsi_device *sdp = scp->device; |
2971 | struct sdebug_dev_info *devip = (struct sdebug_dev_info *)sdp->hostdata; | |
2972 | ||
c65b1445 | 2973 | if (lba + num > sdebug_capacity) { |
22017ed2 | 2974 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
1da177e4 LT |
2975 | return check_condition_result; |
2976 | } | |
c65b1445 DG |
2977 | /* transfer length excessive (tie in to block limits VPD page) */ |
2978 | if (num > sdebug_store_sectors) { | |
22017ed2 | 2979 | /* needs work to find which cdb byte 'num' comes from */ |
cbf67842 | 2980 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
c65b1445 DG |
2981 | return check_condition_result; |
2982 | } | |
9447b6ce MP |
2983 | if (write && unlikely(sdebug_wp)) { |
2984 | mk_sense_buffer(scp, DATA_PROTECT, WRITE_PROTECTED, 0x2); | |
2985 | return check_condition_result; | |
2986 | } | |
f0d1cf93 DG |
2987 | if (sdebug_dev_is_zoned(devip)) |
2988 | return check_zbc_access_params(scp, lba, num, write); | |
2989 | ||
19789100 FT |
2990 | return 0; |
2991 | } | |
2992 | ||
b6ff8ca7 DG |
2993 | /* |
2994 | * Note: if BUG_ON() fires it usually indicates a problem with the parser | |
2995 | * tables. Perhaps a missing F_FAKE_RW or FF_MEDIA_IO flag. Response functions | |
2996 | * that access any of the "stores" in struct sdeb_store_info should call this | |
2997 | * function with bug_if_fake_rw set to true. | |
2998 | */ | |
2999 | static inline struct sdeb_store_info *devip2sip(struct sdebug_dev_info *devip, | |
3000 | bool bug_if_fake_rw) | |
87c715dc | 3001 | { |
b6ff8ca7 DG |
3002 | if (sdebug_fake_rw) { |
3003 | BUG_ON(bug_if_fake_rw); /* See note above */ | |
3004 | return NULL; | |
3005 | } | |
3006 | return xa_load(per_store_ap, devip->sdbg_host->si_idx); | |
87c715dc DG |
3007 | } |
3008 | ||
a4517511 | 3009 | /* Returns number of bytes copied or -1 if error. */ |
87c715dc DG |
3010 | static int do_device_access(struct sdeb_store_info *sip, struct scsi_cmnd *scp, |
3011 | u32 sg_skip, u64 lba, u32 num, bool do_write) | |
19789100 FT |
3012 | { |
3013 | int ret; | |
c2248fc9 | 3014 | u64 block, rest = 0; |
a4517511 | 3015 | enum dma_data_direction dir; |
87c715dc DG |
3016 | struct scsi_data_buffer *sdb = &scp->sdb; |
3017 | u8 *fsp; | |
a4517511 | 3018 | |
c2248fc9 | 3019 | if (do_write) { |
a4517511 | 3020 | dir = DMA_TO_DEVICE; |
4f2c8bf6 | 3021 | write_since_sync = true; |
a4517511 | 3022 | } else { |
a4517511 | 3023 | dir = DMA_FROM_DEVICE; |
a4517511 | 3024 | } |
19789100 | 3025 | |
87c715dc | 3026 | if (!sdb->length || !sip) |
a4517511 | 3027 | return 0; |
87c715dc | 3028 | if (scp->sc_data_direction != dir) |
a4517511 | 3029 | return -1; |
87c715dc | 3030 | fsp = sip->storep; |
19789100 FT |
3031 | |
3032 | block = do_div(lba, sdebug_store_sectors); | |
3033 | if (block + num > sdebug_store_sectors) | |
3034 | rest = block + num - sdebug_store_sectors; | |
3035 | ||
386ecb12 | 3036 | ret = sg_copy_buffer(sdb->table.sgl, sdb->table.nents, |
87c715dc | 3037 | fsp + (block * sdebug_sector_size), |
0a7e69c7 | 3038 | (num - rest) * sdebug_sector_size, sg_skip, do_write); |
773642d9 | 3039 | if (ret != (num - rest) * sdebug_sector_size) |
a4517511 AM |
3040 | return ret; |
3041 | ||
3042 | if (rest) { | |
386ecb12 | 3043 | ret += sg_copy_buffer(sdb->table.sgl, sdb->table.nents, |
87c715dc | 3044 | fsp, rest * sdebug_sector_size, |
0a7e69c7 DG |
3045 | sg_skip + ((num - rest) * sdebug_sector_size), |
3046 | do_write); | |
a4517511 | 3047 | } |
19789100 FT |
3048 | |
3049 | return ret; | |
3050 | } | |
3051 | ||
87c715dc DG |
3052 | /* Returns number of bytes copied or -1 if error. */ |
3053 | static int do_dout_fetch(struct scsi_cmnd *scp, u32 num, u8 *doutp) | |
3054 | { | |
3055 | struct scsi_data_buffer *sdb = &scp->sdb; | |
3056 | ||
3057 | if (!sdb->length) | |
3058 | return 0; | |
3059 | if (scp->sc_data_direction != DMA_TO_DEVICE) | |
3060 | return -1; | |
3061 | return sg_copy_buffer(sdb->table.sgl, sdb->table.nents, doutp, | |
3062 | num * sdebug_sector_size, 0, true); | |
3063 | } | |
3064 | ||
3065 | /* If sip->storep+lba compares equal to arr(num), then copy top half of | |
3066 | * arr into sip->storep+lba and return true. If comparison fails then | |
38d5c833 | 3067 | * return false. */ |
87c715dc | 3068 | static bool comp_write_worker(struct sdeb_store_info *sip, u64 lba, u32 num, |
c3e2fe92 | 3069 | const u8 *arr, bool compare_only) |
38d5c833 DG |
3070 | { |
3071 | bool res; | |
3072 | u64 block, rest = 0; | |
3073 | u32 store_blks = sdebug_store_sectors; | |
773642d9 | 3074 | u32 lb_size = sdebug_sector_size; |
87c715dc | 3075 | u8 *fsp = sip->storep; |
38d5c833 DG |
3076 | |
3077 | block = do_div(lba, store_blks); | |
3078 | if (block + num > store_blks) | |
3079 | rest = block + num - store_blks; | |
3080 | ||
87c715dc | 3081 | res = !memcmp(fsp + (block * lb_size), arr, (num - rest) * lb_size); |
38d5c833 DG |
3082 | if (!res) |
3083 | return res; | |
3084 | if (rest) | |
87c715dc | 3085 | res = memcmp(fsp, arr + ((num - rest) * lb_size), |
38d5c833 DG |
3086 | rest * lb_size); |
3087 | if (!res) | |
3088 | return res; | |
c3e2fe92 DG |
3089 | if (compare_only) |
3090 | return true; | |
38d5c833 | 3091 | arr += num * lb_size; |
87c715dc | 3092 | memcpy(fsp + (block * lb_size), arr, (num - rest) * lb_size); |
38d5c833 | 3093 | if (rest) |
87c715dc | 3094 | memcpy(fsp, arr + ((num - rest) * lb_size), rest * lb_size); |
38d5c833 DG |
3095 | return res; |
3096 | } | |
3097 | ||
51d648af | 3098 | static __be16 dif_compute_csum(const void *buf, int len) |
beb40ea4 | 3099 | { |
51d648af | 3100 | __be16 csum; |
beb40ea4 | 3101 | |
773642d9 | 3102 | if (sdebug_guard) |
51d648af AM |
3103 | csum = (__force __be16)ip_compute_csum(buf, len); |
3104 | else | |
beb40ea4 | 3105 | csum = cpu_to_be16(crc_t10dif(buf, len)); |
51d648af | 3106 | |
beb40ea4 AM |
3107 | return csum; |
3108 | } | |
3109 | ||
6ebf105c | 3110 | static int dif_verify(struct t10_pi_tuple *sdt, const void *data, |
beb40ea4 AM |
3111 | sector_t sector, u32 ei_lba) |
3112 | { | |
773642d9 | 3113 | __be16 csum = dif_compute_csum(data, sdebug_sector_size); |
beb40ea4 AM |
3114 | |
3115 | if (sdt->guard_tag != csum) { | |
c1287970 | 3116 | pr_err("GUARD check failed on sector %lu rcvd 0x%04x, data 0x%04x\n", |
beb40ea4 AM |
3117 | (unsigned long)sector, |
3118 | be16_to_cpu(sdt->guard_tag), | |
3119 | be16_to_cpu(csum)); | |
3120 | return 0x01; | |
3121 | } | |
8475c811 | 3122 | if (sdebug_dif == T10_PI_TYPE1_PROTECTION && |
beb40ea4 | 3123 | be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) { |
c1287970 TW |
3124 | pr_err("REF check failed on sector %lu\n", |
3125 | (unsigned long)sector); | |
beb40ea4 AM |
3126 | return 0x03; |
3127 | } | |
8475c811 | 3128 | if (sdebug_dif == T10_PI_TYPE2_PROTECTION && |
beb40ea4 | 3129 | be32_to_cpu(sdt->ref_tag) != ei_lba) { |
c1287970 TW |
3130 | pr_err("REF check failed on sector %lu\n", |
3131 | (unsigned long)sector); | |
beb40ea4 AM |
3132 | return 0x03; |
3133 | } | |
3134 | return 0; | |
3135 | } | |
3136 | ||
87c715dc | 3137 | static void dif_copy_prot(struct scsi_cmnd *scp, sector_t sector, |
65f72f2a | 3138 | unsigned int sectors, bool read) |
c6a44287 | 3139 | { |
be4e11be | 3140 | size_t resid; |
c6a44287 | 3141 | void *paddr; |
87c715dc | 3142 | struct sdeb_store_info *sip = devip2sip((struct sdebug_dev_info *) |
b6ff8ca7 | 3143 | scp->device->hostdata, true); |
87c715dc | 3144 | struct t10_pi_tuple *dif_storep = sip->dif_storep; |
14faa944 | 3145 | const void *dif_store_end = dif_storep + sdebug_store_sectors; |
be4e11be | 3146 | struct sg_mapping_iter miter; |
c6a44287 | 3147 | |
e18d8bea AM |
3148 | /* Bytes of protection data to copy into sgl */ |
3149 | resid = sectors * sizeof(*dif_storep); | |
c6a44287 | 3150 | |
87c715dc DG |
3151 | sg_miter_start(&miter, scsi_prot_sglist(scp), |
3152 | scsi_prot_sg_count(scp), SG_MITER_ATOMIC | | |
3153 | (read ? SG_MITER_TO_SG : SG_MITER_FROM_SG)); | |
be4e11be AM |
3154 | |
3155 | while (sg_miter_next(&miter) && resid > 0) { | |
87c715dc DG |
3156 | size_t len = min_t(size_t, miter.length, resid); |
3157 | void *start = dif_store(sip, sector); | |
be4e11be | 3158 | size_t rest = 0; |
14faa944 AM |
3159 | |
3160 | if (dif_store_end < start + len) | |
3161 | rest = start + len - dif_store_end; | |
c6a44287 | 3162 | |
be4e11be | 3163 | paddr = miter.addr; |
14faa944 | 3164 | |
65f72f2a AM |
3165 | if (read) |
3166 | memcpy(paddr, start, len - rest); | |
3167 | else | |
3168 | memcpy(start, paddr, len - rest); | |
3169 | ||
3170 | if (rest) { | |
3171 | if (read) | |
3172 | memcpy(paddr + len - rest, dif_storep, rest); | |
3173 | else | |
3174 | memcpy(dif_storep, paddr + len - rest, rest); | |
3175 | } | |
c6a44287 | 3176 | |
e18d8bea | 3177 | sector += len / sizeof(*dif_storep); |
c6a44287 | 3178 | resid -= len; |
c6a44287 | 3179 | } |
be4e11be | 3180 | sg_miter_stop(&miter); |
bb8c063c AM |
3181 | } |
3182 | ||
87c715dc | 3183 | static int prot_verify_read(struct scsi_cmnd *scp, sector_t start_sec, |
bb8c063c AM |
3184 | unsigned int sectors, u32 ei_lba) |
3185 | { | |
f7be6772 | 3186 | int ret = 0; |
bb8c063c | 3187 | unsigned int i; |
bb8c063c | 3188 | sector_t sector; |
87c715dc | 3189 | struct sdeb_store_info *sip = devip2sip((struct sdebug_dev_info *) |
b6ff8ca7 | 3190 | scp->device->hostdata, true); |
87c715dc | 3191 | struct t10_pi_tuple *sdt; |
bb8c063c | 3192 | |
c45eabec | 3193 | for (i = 0; i < sectors; i++, ei_lba++) { |
bb8c063c | 3194 | sector = start_sec + i; |
87c715dc | 3195 | sdt = dif_store(sip, sector); |
bb8c063c | 3196 | |
51d648af | 3197 | if (sdt->app_tag == cpu_to_be16(0xffff)) |
bb8c063c AM |
3198 | continue; |
3199 | ||
f7be6772 MP |
3200 | /* |
3201 | * Because scsi_debug acts as both initiator and | |
3202 | * target we proceed to verify the PI even if | |
3203 | * RDPROTECT=3. This is done so the "initiator" knows | |
3204 | * which type of error to return. Otherwise we would | |
3205 | * have to iterate over the PI twice. | |
3206 | */ | |
3207 | if (scp->cmnd[1] >> 5) { /* RDPROTECT */ | |
3208 | ret = dif_verify(sdt, lba2fake_store(sip, sector), | |
3209 | sector, ei_lba); | |
3210 | if (ret) { | |
3211 | dif_errors++; | |
3212 | break; | |
3213 | } | |
bb8c063c | 3214 | } |
bb8c063c | 3215 | } |
c6a44287 | 3216 | |
87c715dc | 3217 | dif_copy_prot(scp, start_sec, sectors, true); |
c6a44287 MP |
3218 | dix_reads++; |
3219 | ||
f7be6772 | 3220 | return ret; |
c6a44287 MP |
3221 | } |
3222 | ||
7109f370 DG |
3223 | static inline void |
3224 | sdeb_read_lock(struct sdeb_store_info *sip) | |
3225 | { | |
e9c47801 DLM |
3226 | if (sdebug_no_rwlock) { |
3227 | if (sip) | |
3228 | __acquire(&sip->macc_lck); | |
3229 | else | |
3230 | __acquire(&sdeb_fake_rw_lck); | |
3231 | } else { | |
3232 | if (sip) | |
3233 | read_lock(&sip->macc_lck); | |
3234 | else | |
3235 | read_lock(&sdeb_fake_rw_lck); | |
3236 | } | |
7109f370 DG |
3237 | } |
3238 | ||
3239 | static inline void | |
3240 | sdeb_read_unlock(struct sdeb_store_info *sip) | |
3241 | { | |
e9c47801 DLM |
3242 | if (sdebug_no_rwlock) { |
3243 | if (sip) | |
3244 | __release(&sip->macc_lck); | |
3245 | else | |
3246 | __release(&sdeb_fake_rw_lck); | |
3247 | } else { | |
3248 | if (sip) | |
3249 | read_unlock(&sip->macc_lck); | |
3250 | else | |
3251 | read_unlock(&sdeb_fake_rw_lck); | |
3252 | } | |
7109f370 DG |
3253 | } |
3254 | ||
3255 | static inline void | |
3256 | sdeb_write_lock(struct sdeb_store_info *sip) | |
3257 | { | |
e9c47801 DLM |
3258 | if (sdebug_no_rwlock) { |
3259 | if (sip) | |
3260 | __acquire(&sip->macc_lck); | |
3261 | else | |
3262 | __acquire(&sdeb_fake_rw_lck); | |
3263 | } else { | |
3264 | if (sip) | |
3265 | write_lock(&sip->macc_lck); | |
3266 | else | |
3267 | write_lock(&sdeb_fake_rw_lck); | |
3268 | } | |
7109f370 DG |
3269 | } |
3270 | ||
3271 | static inline void | |
3272 | sdeb_write_unlock(struct sdeb_store_info *sip) | |
3273 | { | |
e9c47801 DLM |
3274 | if (sdebug_no_rwlock) { |
3275 | if (sip) | |
3276 | __release(&sip->macc_lck); | |
3277 | else | |
3278 | __release(&sdeb_fake_rw_lck); | |
3279 | } else { | |
3280 | if (sip) | |
3281 | write_unlock(&sip->macc_lck); | |
3282 | else | |
3283 | write_unlock(&sdeb_fake_rw_lck); | |
3284 | } | |
7109f370 DG |
3285 | } |
3286 | ||
fd32119b | 3287 | static int resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
19789100 | 3288 | { |
87c715dc | 3289 | bool check_prot; |
c2248fc9 DG |
3290 | u32 num; |
3291 | u32 ei_lba; | |
19789100 | 3292 | int ret; |
87c715dc | 3293 | u64 lba; |
b6ff8ca7 | 3294 | struct sdeb_store_info *sip = devip2sip(devip, true); |
87c715dc | 3295 | u8 *cmd = scp->cmnd; |
19789100 | 3296 | |
c2248fc9 DG |
3297 | switch (cmd[0]) { |
3298 | case READ_16: | |
3299 | ei_lba = 0; | |
3300 | lba = get_unaligned_be64(cmd + 2); | |
3301 | num = get_unaligned_be32(cmd + 10); | |
3302 | check_prot = true; | |
3303 | break; | |
3304 | case READ_10: | |
3305 | ei_lba = 0; | |
3306 | lba = get_unaligned_be32(cmd + 2); | |
3307 | num = get_unaligned_be16(cmd + 7); | |
3308 | check_prot = true; | |
3309 | break; | |
3310 | case READ_6: | |
3311 | ei_lba = 0; | |
3312 | lba = (u32)cmd[3] | (u32)cmd[2] << 8 | | |
3313 | (u32)(cmd[1] & 0x1f) << 16; | |
3314 | num = (0 == cmd[4]) ? 256 : cmd[4]; | |
3315 | check_prot = true; | |
3316 | break; | |
3317 | case READ_12: | |
3318 | ei_lba = 0; | |
3319 | lba = get_unaligned_be32(cmd + 2); | |
3320 | num = get_unaligned_be32(cmd + 6); | |
3321 | check_prot = true; | |
3322 | break; | |
3323 | case XDWRITEREAD_10: | |
3324 | ei_lba = 0; | |
3325 | lba = get_unaligned_be32(cmd + 2); | |
3326 | num = get_unaligned_be16(cmd + 7); | |
3327 | check_prot = false; | |
3328 | break; | |
3329 | default: /* assume READ(32) */ | |
3330 | lba = get_unaligned_be64(cmd + 12); | |
3331 | ei_lba = get_unaligned_be32(cmd + 20); | |
3332 | num = get_unaligned_be32(cmd + 28); | |
3333 | check_prot = false; | |
3334 | break; | |
3335 | } | |
f46eb0e9 | 3336 | if (unlikely(have_dif_prot && check_prot)) { |
8475c811 | 3337 | if (sdebug_dif == T10_PI_TYPE2_PROTECTION && |
c2248fc9 DG |
3338 | (cmd[1] & 0xe0)) { |
3339 | mk_sense_invalid_opcode(scp); | |
3340 | return check_condition_result; | |
3341 | } | |
8475c811 CH |
3342 | if ((sdebug_dif == T10_PI_TYPE1_PROTECTION || |
3343 | sdebug_dif == T10_PI_TYPE3_PROTECTION) && | |
c2248fc9 DG |
3344 | (cmd[1] & 0xe0) == 0) |
3345 | sdev_printk(KERN_ERR, scp->device, "Unprotected RD " | |
3346 | "to DIF device\n"); | |
3347 | } | |
3a90a63d DG |
3348 | if (unlikely((sdebug_opts & SDEBUG_OPT_SHORT_TRANSFER) && |
3349 | atomic_read(&sdeb_inject_pending))) { | |
3350 | num /= 2; | |
3351 | atomic_set(&sdeb_inject_pending, 0); | |
3352 | } | |
c2248fc9 | 3353 | |
9447b6ce MP |
3354 | ret = check_device_access_params(scp, lba, num, false); |
3355 | if (ret) | |
3356 | return ret; | |
f46eb0e9 | 3357 | if (unlikely((SDEBUG_OPT_MEDIUM_ERR & sdebug_opts) && |
d9da891a LO |
3358 | (lba <= (sdebug_medium_error_start + sdebug_medium_error_count - 1)) && |
3359 | ((lba + num) > sdebug_medium_error_start))) { | |
c65b1445 | 3360 | /* claim unrecoverable read error */ |
c2248fc9 | 3361 | mk_sense_buffer(scp, MEDIUM_ERROR, UNRECOVERED_READ_ERR, 0); |
c65b1445 | 3362 | /* set info field and valid bit for fixed descriptor */ |
c2248fc9 DG |
3363 | if (0x70 == (scp->sense_buffer[0] & 0x7f)) { |
3364 | scp->sense_buffer[0] |= 0x80; /* Valid bit */ | |
32f7ef73 DG |
3365 | ret = (lba < OPT_MEDIUM_ERR_ADDR) |
3366 | ? OPT_MEDIUM_ERR_ADDR : (int)lba; | |
c2248fc9 | 3367 | put_unaligned_be32(ret, scp->sense_buffer + 3); |
c65b1445 | 3368 | } |
c2248fc9 | 3369 | scsi_set_resid(scp, scsi_bufflen(scp)); |
1da177e4 LT |
3370 | return check_condition_result; |
3371 | } | |
c6a44287 | 3372 | |
7109f370 | 3373 | sdeb_read_lock(sip); |
6c78cc06 | 3374 | |
c6a44287 | 3375 | /* DIX + T10 DIF */ |
f46eb0e9 | 3376 | if (unlikely(sdebug_dix && scsi_prot_sg_count(scp))) { |
f7be6772 MP |
3377 | switch (prot_verify_read(scp, lba, num, ei_lba)) { |
3378 | case 1: /* Guard tag error */ | |
3379 | if (cmd[1] >> 5 != 3) { /* RDPROTECT != 3 */ | |
7109f370 | 3380 | sdeb_read_unlock(sip); |
f7be6772 MP |
3381 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); |
3382 | return check_condition_result; | |
3383 | } else if (scp->prot_flags & SCSI_PROT_GUARD_CHECK) { | |
7109f370 | 3384 | sdeb_read_unlock(sip); |
f7be6772 MP |
3385 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); |
3386 | return illegal_condition_result; | |
3387 | } | |
3388 | break; | |
3389 | case 3: /* Reference tag error */ | |
3390 | if (cmd[1] >> 5 != 3) { /* RDPROTECT != 3 */ | |
7109f370 | 3391 | sdeb_read_unlock(sip); |
f7be6772 MP |
3392 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 3); |
3393 | return check_condition_result; | |
3394 | } else if (scp->prot_flags & SCSI_PROT_REF_CHECK) { | |
7109f370 | 3395 | sdeb_read_unlock(sip); |
f7be6772 MP |
3396 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 3); |
3397 | return illegal_condition_result; | |
3398 | } | |
3399 | break; | |
c6a44287 MP |
3400 | } |
3401 | } | |
3402 | ||
87c715dc | 3403 | ret = do_device_access(sip, scp, 0, lba, num, false); |
7109f370 | 3404 | sdeb_read_unlock(sip); |
f46eb0e9 | 3405 | if (unlikely(ret == -1)) |
a4517511 AM |
3406 | return DID_ERROR << 16; |
3407 | ||
42d387be | 3408 | scsi_set_resid(scp, scsi_bufflen(scp) - ret); |
a4517511 | 3409 | |
3a90a63d DG |
3410 | if (unlikely((sdebug_opts & SDEBUG_OPT_RECOV_DIF_DIX) && |
3411 | atomic_read(&sdeb_inject_pending))) { | |
3412 | if (sdebug_opts & SDEBUG_OPT_RECOVERED_ERR) { | |
3413 | mk_sense_buffer(scp, RECOVERED_ERROR, THRESHOLD_EXCEEDED, 0); | |
3414 | atomic_set(&sdeb_inject_pending, 0); | |
c2248fc9 | 3415 | return check_condition_result; |
3a90a63d | 3416 | } else if (sdebug_opts & SDEBUG_OPT_DIF_ERR) { |
c2248fc9 DG |
3417 | /* Logical block guard check failed */ |
3418 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); | |
3a90a63d | 3419 | atomic_set(&sdeb_inject_pending, 0); |
c2248fc9 | 3420 | return illegal_condition_result; |
3a90a63d | 3421 | } else if (SDEBUG_OPT_DIX_ERR & sdebug_opts) { |
c2248fc9 | 3422 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); |
3a90a63d | 3423 | atomic_set(&sdeb_inject_pending, 0); |
c2248fc9 DG |
3424 | return illegal_condition_result; |
3425 | } | |
3426 | } | |
a4517511 | 3427 | return 0; |
1da177e4 LT |
3428 | } |
3429 | ||
c6a44287 | 3430 | static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, |
395cef03 | 3431 | unsigned int sectors, u32 ei_lba) |
c6a44287 | 3432 | { |
be4e11be | 3433 | int ret; |
6ebf105c | 3434 | struct t10_pi_tuple *sdt; |
be4e11be | 3435 | void *daddr; |
65f72f2a | 3436 | sector_t sector = start_sec; |
c6a44287 | 3437 | int ppage_offset; |
be4e11be AM |
3438 | int dpage_offset; |
3439 | struct sg_mapping_iter diter; | |
3440 | struct sg_mapping_iter piter; | |
c6a44287 | 3441 | |
c6a44287 MP |
3442 | BUG_ON(scsi_sg_count(SCpnt) == 0); |
3443 | BUG_ON(scsi_prot_sg_count(SCpnt) == 0); | |
3444 | ||
be4e11be AM |
3445 | sg_miter_start(&piter, scsi_prot_sglist(SCpnt), |
3446 | scsi_prot_sg_count(SCpnt), | |
3447 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); | |
3448 | sg_miter_start(&diter, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), | |
3449 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); | |
3450 | ||
3451 | /* For each protection page */ | |
3452 | while (sg_miter_next(&piter)) { | |
3453 | dpage_offset = 0; | |
3454 | if (WARN_ON(!sg_miter_next(&diter))) { | |
3455 | ret = 0x01; | |
3456 | goto out; | |
3457 | } | |
c6a44287 | 3458 | |
be4e11be | 3459 | for (ppage_offset = 0; ppage_offset < piter.length; |
6ebf105c | 3460 | ppage_offset += sizeof(struct t10_pi_tuple)) { |
c6a44287 | 3461 | /* If we're at the end of the current |
be4e11be | 3462 | * data page advance to the next one |
c6a44287 | 3463 | */ |
be4e11be AM |
3464 | if (dpage_offset >= diter.length) { |
3465 | if (WARN_ON(!sg_miter_next(&diter))) { | |
3466 | ret = 0x01; | |
3467 | goto out; | |
3468 | } | |
3469 | dpage_offset = 0; | |
c6a44287 MP |
3470 | } |
3471 | ||
be4e11be AM |
3472 | sdt = piter.addr + ppage_offset; |
3473 | daddr = diter.addr + dpage_offset; | |
c6a44287 | 3474 | |
f7be6772 MP |
3475 | if (SCpnt->cmnd[1] >> 5 != 3) { /* WRPROTECT */ |
3476 | ret = dif_verify(sdt, daddr, sector, ei_lba); | |
3477 | if (ret) | |
3478 | goto out; | |
395cef03 MP |
3479 | } |
3480 | ||
c6a44287 | 3481 | sector++; |
395cef03 | 3482 | ei_lba++; |
773642d9 | 3483 | dpage_offset += sdebug_sector_size; |
c6a44287 | 3484 | } |
be4e11be AM |
3485 | diter.consumed = dpage_offset; |
3486 | sg_miter_stop(&diter); | |
c6a44287 | 3487 | } |
be4e11be | 3488 | sg_miter_stop(&piter); |
c6a44287 | 3489 | |
65f72f2a | 3490 | dif_copy_prot(SCpnt, start_sec, sectors, false); |
c6a44287 MP |
3491 | dix_writes++; |
3492 | ||
3493 | return 0; | |
3494 | ||
3495 | out: | |
3496 | dif_errors++; | |
be4e11be AM |
3497 | sg_miter_stop(&diter); |
3498 | sg_miter_stop(&piter); | |
c6a44287 MP |
3499 | return ret; |
3500 | } | |
3501 | ||
b90ebc3d AM |
3502 | static unsigned long lba_to_map_index(sector_t lba) |
3503 | { | |
773642d9 DG |
3504 | if (sdebug_unmap_alignment) |
3505 | lba += sdebug_unmap_granularity - sdebug_unmap_alignment; | |
3506 | sector_div(lba, sdebug_unmap_granularity); | |
b90ebc3d AM |
3507 | return lba; |
3508 | } | |
3509 | ||
3510 | static sector_t map_index_to_lba(unsigned long index) | |
44d92694 | 3511 | { |
773642d9 | 3512 | sector_t lba = index * sdebug_unmap_granularity; |
a027b5b9 | 3513 | |
773642d9 DG |
3514 | if (sdebug_unmap_alignment) |
3515 | lba -= sdebug_unmap_granularity - sdebug_unmap_alignment; | |
a027b5b9 | 3516 | return lba; |
b90ebc3d | 3517 | } |
44d92694 | 3518 | |
87c715dc DG |
3519 | static unsigned int map_state(struct sdeb_store_info *sip, sector_t lba, |
3520 | unsigned int *num) | |
b90ebc3d AM |
3521 | { |
3522 | sector_t end; | |
3523 | unsigned int mapped; | |
3524 | unsigned long index; | |
3525 | unsigned long next; | |
44d92694 | 3526 | |
b90ebc3d | 3527 | index = lba_to_map_index(lba); |
87c715dc | 3528 | mapped = test_bit(index, sip->map_storep); |
44d92694 MP |
3529 | |
3530 | if (mapped) | |
87c715dc | 3531 | next = find_next_zero_bit(sip->map_storep, map_size, index); |
44d92694 | 3532 | else |
87c715dc | 3533 | next = find_next_bit(sip->map_storep, map_size, index); |
44d92694 | 3534 | |
b90ebc3d | 3535 | end = min_t(sector_t, sdebug_store_sectors, map_index_to_lba(next)); |
44d92694 | 3536 | *num = end - lba; |
44d92694 MP |
3537 | return mapped; |
3538 | } | |
3539 | ||
87c715dc DG |
3540 | static void map_region(struct sdeb_store_info *sip, sector_t lba, |
3541 | unsigned int len) | |
44d92694 | 3542 | { |
44d92694 MP |
3543 | sector_t end = lba + len; |
3544 | ||
44d92694 | 3545 | while (lba < end) { |
b90ebc3d | 3546 | unsigned long index = lba_to_map_index(lba); |
44d92694 | 3547 | |
b90ebc3d | 3548 | if (index < map_size) |
87c715dc | 3549 | set_bit(index, sip->map_storep); |
44d92694 | 3550 | |
b90ebc3d | 3551 | lba = map_index_to_lba(index + 1); |
44d92694 MP |
3552 | } |
3553 | } | |
3554 | ||
87c715dc DG |
3555 | static void unmap_region(struct sdeb_store_info *sip, sector_t lba, |
3556 | unsigned int len) | |
44d92694 | 3557 | { |
44d92694 | 3558 | sector_t end = lba + len; |
87c715dc | 3559 | u8 *fsp = sip->storep; |
44d92694 | 3560 | |
44d92694 | 3561 | while (lba < end) { |
b90ebc3d | 3562 | unsigned long index = lba_to_map_index(lba); |
44d92694 | 3563 | |
b90ebc3d | 3564 | if (lba == map_index_to_lba(index) && |
773642d9 | 3565 | lba + sdebug_unmap_granularity <= end && |
b90ebc3d | 3566 | index < map_size) { |
87c715dc | 3567 | clear_bit(index, sip->map_storep); |
760f3b03 | 3568 | if (sdebug_lbprz) { /* for LBPRZ=2 return 0xff_s */ |
87c715dc | 3569 | memset(fsp + lba * sdebug_sector_size, |
760f3b03 | 3570 | (sdebug_lbprz & 1) ? 0 : 0xff, |
773642d9 DG |
3571 | sdebug_sector_size * |
3572 | sdebug_unmap_granularity); | |
b90ebc3d | 3573 | } |
87c715dc DG |
3574 | if (sip->dif_storep) { |
3575 | memset(sip->dif_storep + lba, 0xff, | |
3576 | sizeof(*sip->dif_storep) * | |
773642d9 | 3577 | sdebug_unmap_granularity); |
e9926b43 | 3578 | } |
be1dd78d | 3579 | } |
b90ebc3d | 3580 | lba = map_index_to_lba(index + 1); |
44d92694 MP |
3581 | } |
3582 | } | |
3583 | ||
fd32119b | 3584 | static int resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
1da177e4 | 3585 | { |
87c715dc | 3586 | bool check_prot; |
c2248fc9 DG |
3587 | u32 num; |
3588 | u32 ei_lba; | |
19789100 | 3589 | int ret; |
87c715dc | 3590 | u64 lba; |
b6ff8ca7 | 3591 | struct sdeb_store_info *sip = devip2sip(devip, true); |
87c715dc | 3592 | u8 *cmd = scp->cmnd; |
1da177e4 | 3593 | |
c2248fc9 DG |
3594 | switch (cmd[0]) { |
3595 | case WRITE_16: | |
3596 | ei_lba = 0; | |
3597 | lba = get_unaligned_be64(cmd + 2); | |
3598 | num = get_unaligned_be32(cmd + 10); | |
3599 | check_prot = true; | |
3600 | break; | |
3601 | case WRITE_10: | |
3602 | ei_lba = 0; | |
3603 | lba = get_unaligned_be32(cmd + 2); | |
3604 | num = get_unaligned_be16(cmd + 7); | |
3605 | check_prot = true; | |
3606 | break; | |
3607 | case WRITE_6: | |
3608 | ei_lba = 0; | |
3609 | lba = (u32)cmd[3] | (u32)cmd[2] << 8 | | |
3610 | (u32)(cmd[1] & 0x1f) << 16; | |
3611 | num = (0 == cmd[4]) ? 256 : cmd[4]; | |
3612 | check_prot = true; | |
3613 | break; | |
3614 | case WRITE_12: | |
3615 | ei_lba = 0; | |
3616 | lba = get_unaligned_be32(cmd + 2); | |
3617 | num = get_unaligned_be32(cmd + 6); | |
3618 | check_prot = true; | |
3619 | break; | |
3620 | case 0x53: /* XDWRITEREAD(10) */ | |
3621 | ei_lba = 0; | |
3622 | lba = get_unaligned_be32(cmd + 2); | |
3623 | num = get_unaligned_be16(cmd + 7); | |
3624 | check_prot = false; | |
3625 | break; | |
3626 | default: /* assume WRITE(32) */ | |
3627 | lba = get_unaligned_be64(cmd + 12); | |
3628 | ei_lba = get_unaligned_be32(cmd + 20); | |
3629 | num = get_unaligned_be32(cmd + 28); | |
3630 | check_prot = false; | |
3631 | break; | |
3632 | } | |
f46eb0e9 | 3633 | if (unlikely(have_dif_prot && check_prot)) { |
8475c811 | 3634 | if (sdebug_dif == T10_PI_TYPE2_PROTECTION && |
c2248fc9 DG |
3635 | (cmd[1] & 0xe0)) { |
3636 | mk_sense_invalid_opcode(scp); | |
3637 | return check_condition_result; | |
3638 | } | |
8475c811 CH |
3639 | if ((sdebug_dif == T10_PI_TYPE1_PROTECTION || |
3640 | sdebug_dif == T10_PI_TYPE3_PROTECTION) && | |
c2248fc9 DG |
3641 | (cmd[1] & 0xe0) == 0) |
3642 | sdev_printk(KERN_ERR, scp->device, "Unprotected WR " | |
3643 | "to DIF device\n"); | |
3644 | } | |
f0d1cf93 | 3645 | |
7109f370 | 3646 | sdeb_write_lock(sip); |
9447b6ce | 3647 | ret = check_device_access_params(scp, lba, num, true); |
f0d1cf93 | 3648 | if (ret) { |
7109f370 | 3649 | sdeb_write_unlock(sip); |
9447b6ce | 3650 | return ret; |
f0d1cf93 | 3651 | } |
6c78cc06 | 3652 | |
c6a44287 | 3653 | /* DIX + T10 DIF */ |
f46eb0e9 | 3654 | if (unlikely(sdebug_dix && scsi_prot_sg_count(scp))) { |
f7be6772 MP |
3655 | switch (prot_verify_write(scp, lba, num, ei_lba)) { |
3656 | case 1: /* Guard tag error */ | |
3657 | if (scp->prot_flags & SCSI_PROT_GUARD_CHECK) { | |
7109f370 | 3658 | sdeb_write_unlock(sip); |
f7be6772 MP |
3659 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); |
3660 | return illegal_condition_result; | |
3661 | } else if (scp->cmnd[1] >> 5 != 3) { /* WRPROTECT != 3 */ | |
7109f370 | 3662 | sdeb_write_unlock(sip); |
f7be6772 MP |
3663 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); |
3664 | return check_condition_result; | |
3665 | } | |
3666 | break; | |
3667 | case 3: /* Reference tag error */ | |
3668 | if (scp->prot_flags & SCSI_PROT_REF_CHECK) { | |
7109f370 | 3669 | sdeb_write_unlock(sip); |
f7be6772 MP |
3670 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 3); |
3671 | return illegal_condition_result; | |
3672 | } else if (scp->cmnd[1] >> 5 != 3) { /* WRPROTECT != 3 */ | |
7109f370 | 3673 | sdeb_write_unlock(sip); |
f7be6772 MP |
3674 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 3); |
3675 | return check_condition_result; | |
3676 | } | |
3677 | break; | |
c6a44287 MP |
3678 | } |
3679 | } | |
3680 | ||
87c715dc | 3681 | ret = do_device_access(sip, scp, 0, lba, num, true); |
f46eb0e9 | 3682 | if (unlikely(scsi_debug_lbp())) |
87c715dc | 3683 | map_region(sip, lba, num); |
f0d1cf93 DG |
3684 | /* If ZBC zone then bump its write pointer */ |
3685 | if (sdebug_dev_is_zoned(devip)) | |
3686 | zbc_inc_wp(devip, lba, num); | |
7109f370 | 3687 | sdeb_write_unlock(sip); |
f46eb0e9 | 3688 | if (unlikely(-1 == ret)) |
773642d9 | 3689 | return DID_ERROR << 16; |
c4837394 DG |
3690 | else if (unlikely(sdebug_verbose && |
3691 | (ret < (num * sdebug_sector_size)))) | |
c2248fc9 | 3692 | sdev_printk(KERN_INFO, scp->device, |
cbf67842 | 3693 | "%s: write: cdb indicated=%u, IO sent=%d bytes\n", |
773642d9 | 3694 | my_name, num * sdebug_sector_size, ret); |
44d92694 | 3695 | |
3a90a63d DG |
3696 | if (unlikely((sdebug_opts & SDEBUG_OPT_RECOV_DIF_DIX) && |
3697 | atomic_read(&sdeb_inject_pending))) { | |
3698 | if (sdebug_opts & SDEBUG_OPT_RECOVERED_ERR) { | |
3699 | mk_sense_buffer(scp, RECOVERED_ERROR, THRESHOLD_EXCEEDED, 0); | |
3700 | atomic_set(&sdeb_inject_pending, 0); | |
3701 | return check_condition_result; | |
3702 | } else if (sdebug_opts & SDEBUG_OPT_DIF_ERR) { | |
3703 | /* Logical block guard check failed */ | |
3704 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); | |
3705 | atomic_set(&sdeb_inject_pending, 0); | |
3706 | return illegal_condition_result; | |
3707 | } else if (sdebug_opts & SDEBUG_OPT_DIX_ERR) { | |
3708 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); | |
3709 | atomic_set(&sdeb_inject_pending, 0); | |
3710 | return illegal_condition_result; | |
c2248fc9 DG |
3711 | } |
3712 | } | |
44d92694 MP |
3713 | return 0; |
3714 | } | |
3715 | ||
481b5e5c DG |
3716 | /* |
3717 | * T10 has only specified WRITE SCATTERED(16) and WRITE SCATTERED(32). | |
3718 | * No READ GATHERED yet (requires bidi or long cdb holding gather list). | |
3719 | */ | |
3720 | static int resp_write_scat(struct scsi_cmnd *scp, | |
3721 | struct sdebug_dev_info *devip) | |
3722 | { | |
3723 | u8 *cmd = scp->cmnd; | |
3724 | u8 *lrdp = NULL; | |
3725 | u8 *up; | |
b6ff8ca7 | 3726 | struct sdeb_store_info *sip = devip2sip(devip, true); |
481b5e5c DG |
3727 | u8 wrprotect; |
3728 | u16 lbdof, num_lrd, k; | |
3729 | u32 num, num_by, bt_len, lbdof_blen, sg_off, cum_lb; | |
3730 | u32 lb_size = sdebug_sector_size; | |
3731 | u32 ei_lba; | |
3732 | u64 lba; | |
481b5e5c DG |
3733 | int ret, res; |
3734 | bool is_16; | |
3735 | static const u32 lrd_size = 32; /* + parameter list header size */ | |
3736 | ||
3737 | if (cmd[0] == VARIABLE_LENGTH_CMD) { | |
3738 | is_16 = false; | |
3739 | wrprotect = (cmd[10] >> 5) & 0x7; | |
3740 | lbdof = get_unaligned_be16(cmd + 12); | |
3741 | num_lrd = get_unaligned_be16(cmd + 16); | |
3742 | bt_len = get_unaligned_be32(cmd + 28); | |
3743 | } else { /* that leaves WRITE SCATTERED(16) */ | |
3744 | is_16 = true; | |
3745 | wrprotect = (cmd[2] >> 5) & 0x7; | |
3746 | lbdof = get_unaligned_be16(cmd + 4); | |
3747 | num_lrd = get_unaligned_be16(cmd + 8); | |
3748 | bt_len = get_unaligned_be32(cmd + 10); | |
3749 | if (unlikely(have_dif_prot)) { | |
3750 | if (sdebug_dif == T10_PI_TYPE2_PROTECTION && | |
3751 | wrprotect) { | |
3752 | mk_sense_invalid_opcode(scp); | |
3753 | return illegal_condition_result; | |
3754 | } | |
3755 | if ((sdebug_dif == T10_PI_TYPE1_PROTECTION || | |
3756 | sdebug_dif == T10_PI_TYPE3_PROTECTION) && | |
3757 | wrprotect == 0) | |
3758 | sdev_printk(KERN_ERR, scp->device, | |
3759 | "Unprotected WR to DIF device\n"); | |
3760 | } | |
3761 | } | |
3762 | if ((num_lrd == 0) || (bt_len == 0)) | |
3763 | return 0; /* T10 says these do-nothings are not errors */ | |
3764 | if (lbdof == 0) { | |
3765 | if (sdebug_verbose) | |
3766 | sdev_printk(KERN_INFO, scp->device, | |
3767 | "%s: %s: LB Data Offset field bad\n", | |
3768 | my_name, __func__); | |
3769 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
3770 | return illegal_condition_result; | |
3771 | } | |
3772 | lbdof_blen = lbdof * lb_size; | |
3773 | if ((lrd_size + (num_lrd * lrd_size)) > lbdof_blen) { | |
3774 | if (sdebug_verbose) | |
3775 | sdev_printk(KERN_INFO, scp->device, | |
3776 | "%s: %s: LBA range descriptors don't fit\n", | |
3777 | my_name, __func__); | |
3778 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
3779 | return illegal_condition_result; | |
3780 | } | |
3781 | lrdp = kzalloc(lbdof_blen, GFP_ATOMIC); | |
3782 | if (lrdp == NULL) | |
3783 | return SCSI_MLQUEUE_HOST_BUSY; | |
3784 | if (sdebug_verbose) | |
3785 | sdev_printk(KERN_INFO, scp->device, | |
3786 | "%s: %s: Fetch header+scatter_list, lbdof_blen=%u\n", | |
3787 | my_name, __func__, lbdof_blen); | |
3788 | res = fetch_to_dev_buffer(scp, lrdp, lbdof_blen); | |
3789 | if (res == -1) { | |
3790 | ret = DID_ERROR << 16; | |
3791 | goto err_out; | |
3792 | } | |
3793 | ||
7109f370 | 3794 | sdeb_write_lock(sip); |
481b5e5c DG |
3795 | sg_off = lbdof_blen; |
3796 | /* Spec says Buffer xfer Length field in number of LBs in dout */ | |
3797 | cum_lb = 0; | |
3798 | for (k = 0, up = lrdp + lrd_size; k < num_lrd; ++k, up += lrd_size) { | |
3799 | lba = get_unaligned_be64(up + 0); | |
3800 | num = get_unaligned_be32(up + 8); | |
3801 | if (sdebug_verbose) | |
3802 | sdev_printk(KERN_INFO, scp->device, | |
3803 | "%s: %s: k=%d LBA=0x%llx num=%u sg_off=%u\n", | |
3804 | my_name, __func__, k, lba, num, sg_off); | |
3805 | if (num == 0) | |
3806 | continue; | |
9447b6ce | 3807 | ret = check_device_access_params(scp, lba, num, true); |
481b5e5c DG |
3808 | if (ret) |
3809 | goto err_out_unlock; | |
3810 | num_by = num * lb_size; | |
3811 | ei_lba = is_16 ? 0 : get_unaligned_be32(up + 12); | |
3812 | ||
3813 | if ((cum_lb + num) > bt_len) { | |
3814 | if (sdebug_verbose) | |
3815 | sdev_printk(KERN_INFO, scp->device, | |
3816 | "%s: %s: sum of blocks > data provided\n", | |
3817 | my_name, __func__); | |
3818 | mk_sense_buffer(scp, ILLEGAL_REQUEST, WRITE_ERROR_ASC, | |
3819 | 0); | |
3820 | ret = illegal_condition_result; | |
3821 | goto err_out_unlock; | |
3822 | } | |
3823 | ||
3824 | /* DIX + T10 DIF */ | |
3825 | if (unlikely(sdebug_dix && scsi_prot_sg_count(scp))) { | |
3826 | int prot_ret = prot_verify_write(scp, lba, num, | |
3827 | ei_lba); | |
3828 | ||
3829 | if (prot_ret) { | |
3830 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, | |
3831 | prot_ret); | |
3832 | ret = illegal_condition_result; | |
3833 | goto err_out_unlock; | |
3834 | } | |
3835 | } | |
3836 | ||
87c715dc | 3837 | ret = do_device_access(sip, scp, sg_off, lba, num, true); |
f0d1cf93 DG |
3838 | /* If ZBC zone then bump its write pointer */ |
3839 | if (sdebug_dev_is_zoned(devip)) | |
3840 | zbc_inc_wp(devip, lba, num); | |
481b5e5c | 3841 | if (unlikely(scsi_debug_lbp())) |
87c715dc | 3842 | map_region(sip, lba, num); |
481b5e5c DG |
3843 | if (unlikely(-1 == ret)) { |
3844 | ret = DID_ERROR << 16; | |
3845 | goto err_out_unlock; | |
3846 | } else if (unlikely(sdebug_verbose && (ret < num_by))) | |
3847 | sdev_printk(KERN_INFO, scp->device, | |
3848 | "%s: write: cdb indicated=%u, IO sent=%d bytes\n", | |
3849 | my_name, num_by, ret); | |
3850 | ||
3a90a63d DG |
3851 | if (unlikely((sdebug_opts & SDEBUG_OPT_RECOV_DIF_DIX) && |
3852 | atomic_read(&sdeb_inject_pending))) { | |
3853 | if (sdebug_opts & SDEBUG_OPT_RECOVERED_ERR) { | |
3854 | mk_sense_buffer(scp, RECOVERED_ERROR, THRESHOLD_EXCEEDED, 0); | |
3855 | atomic_set(&sdeb_inject_pending, 0); | |
3856 | ret = check_condition_result; | |
3857 | goto err_out_unlock; | |
3858 | } else if (sdebug_opts & SDEBUG_OPT_DIF_ERR) { | |
3859 | /* Logical block guard check failed */ | |
3860 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); | |
3861 | atomic_set(&sdeb_inject_pending, 0); | |
3862 | ret = illegal_condition_result; | |
3863 | goto err_out_unlock; | |
3864 | } else if (sdebug_opts & SDEBUG_OPT_DIX_ERR) { | |
3865 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); | |
3866 | atomic_set(&sdeb_inject_pending, 0); | |
3867 | ret = illegal_condition_result; | |
3868 | goto err_out_unlock; | |
481b5e5c DG |
3869 | } |
3870 | } | |
3871 | sg_off += num_by; | |
3872 | cum_lb += num; | |
3873 | } | |
3874 | ret = 0; | |
3875 | err_out_unlock: | |
7109f370 | 3876 | sdeb_write_unlock(sip); |
481b5e5c DG |
3877 | err_out: |
3878 | kfree(lrdp); | |
3879 | return ret; | |
3880 | } | |
3881 | ||
fd32119b DG |
3882 | static int resp_write_same(struct scsi_cmnd *scp, u64 lba, u32 num, |
3883 | u32 ei_lba, bool unmap, bool ndob) | |
44d92694 | 3884 | { |
f0d1cf93 DG |
3885 | struct scsi_device *sdp = scp->device; |
3886 | struct sdebug_dev_info *devip = (struct sdebug_dev_info *)sdp->hostdata; | |
44d92694 | 3887 | unsigned long long i; |
40d07b52 | 3888 | u64 block, lbaa; |
87c715dc DG |
3889 | u32 lb_size = sdebug_sector_size; |
3890 | int ret; | |
3891 | struct sdeb_store_info *sip = devip2sip((struct sdebug_dev_info *) | |
b6ff8ca7 | 3892 | scp->device->hostdata, true); |
40d07b52 | 3893 | u8 *fs1p; |
87c715dc | 3894 | u8 *fsp; |
44d92694 | 3895 | |
7109f370 | 3896 | sdeb_write_lock(sip); |
f0d1cf93 | 3897 | |
9447b6ce | 3898 | ret = check_device_access_params(scp, lba, num, true); |
f0d1cf93 | 3899 | if (ret) { |
7109f370 | 3900 | sdeb_write_unlock(sip); |
44d92694 | 3901 | return ret; |
f0d1cf93 | 3902 | } |
44d92694 | 3903 | |
9ed8d3dc | 3904 | if (unmap && scsi_debug_lbp()) { |
87c715dc | 3905 | unmap_region(sip, lba, num); |
44d92694 MP |
3906 | goto out; |
3907 | } | |
40d07b52 DG |
3908 | lbaa = lba; |
3909 | block = do_div(lbaa, sdebug_store_sectors); | |
c2248fc9 | 3910 | /* if ndob then zero 1 logical block, else fetch 1 logical block */ |
87c715dc DG |
3911 | fsp = sip->storep; |
3912 | fs1p = fsp + (block * lb_size); | |
c2248fc9 | 3913 | if (ndob) { |
40d07b52 | 3914 | memset(fs1p, 0, lb_size); |
c2248fc9 DG |
3915 | ret = 0; |
3916 | } else | |
40d07b52 | 3917 | ret = fetch_to_dev_buffer(scp, fs1p, lb_size); |
44d92694 MP |
3918 | |
3919 | if (-1 == ret) { | |
7109f370 | 3920 | sdeb_write_unlock(sip); |
773642d9 | 3921 | return DID_ERROR << 16; |
40d07b52 | 3922 | } else if (sdebug_verbose && !ndob && (ret < lb_size)) |
c2248fc9 | 3923 | sdev_printk(KERN_INFO, scp->device, |
e33d7c56 | 3924 | "%s: %s: lb size=%u, IO sent=%d bytes\n", |
40d07b52 | 3925 | my_name, "write same", lb_size, ret); |
44d92694 MP |
3926 | |
3927 | /* Copy first sector to remaining blocks */ | |
40d07b52 DG |
3928 | for (i = 1 ; i < num ; i++) { |
3929 | lbaa = lba + i; | |
3930 | block = do_div(lbaa, sdebug_store_sectors); | |
87c715dc | 3931 | memmove(fsp + (block * lb_size), fs1p, lb_size); |
40d07b52 | 3932 | } |
9ed8d3dc | 3933 | if (scsi_debug_lbp()) |
87c715dc | 3934 | map_region(sip, lba, num); |
f0d1cf93 DG |
3935 | /* If ZBC zone then bump its write pointer */ |
3936 | if (sdebug_dev_is_zoned(devip)) | |
3937 | zbc_inc_wp(devip, lba, num); | |
44d92694 | 3938 | out: |
7109f370 | 3939 | sdeb_write_unlock(sip); |
44d92694 | 3940 | |
1da177e4 LT |
3941 | return 0; |
3942 | } | |
3943 | ||
fd32119b DG |
3944 | static int resp_write_same_10(struct scsi_cmnd *scp, |
3945 | struct sdebug_dev_info *devip) | |
c2248fc9 DG |
3946 | { |
3947 | u8 *cmd = scp->cmnd; | |
3948 | u32 lba; | |
3949 | u16 num; | |
3950 | u32 ei_lba = 0; | |
3951 | bool unmap = false; | |
3952 | ||
3953 | if (cmd[1] & 0x8) { | |
773642d9 | 3954 | if (sdebug_lbpws10 == 0) { |
c2248fc9 DG |
3955 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 3); |
3956 | return check_condition_result; | |
3957 | } else | |
3958 | unmap = true; | |
3959 | } | |
3960 | lba = get_unaligned_be32(cmd + 2); | |
3961 | num = get_unaligned_be16(cmd + 7); | |
773642d9 | 3962 | if (num > sdebug_write_same_length) { |
c2248fc9 DG |
3963 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 7, -1); |
3964 | return check_condition_result; | |
3965 | } | |
3966 | return resp_write_same(scp, lba, num, ei_lba, unmap, false); | |
3967 | } | |
3968 | ||
fd32119b DG |
3969 | static int resp_write_same_16(struct scsi_cmnd *scp, |
3970 | struct sdebug_dev_info *devip) | |
c2248fc9 DG |
3971 | { |
3972 | u8 *cmd = scp->cmnd; | |
3973 | u64 lba; | |
3974 | u32 num; | |
3975 | u32 ei_lba = 0; | |
3976 | bool unmap = false; | |
3977 | bool ndob = false; | |
3978 | ||
3979 | if (cmd[1] & 0x8) { /* UNMAP */ | |
773642d9 | 3980 | if (sdebug_lbpws == 0) { |
c2248fc9 DG |
3981 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 3); |
3982 | return check_condition_result; | |
3983 | } else | |
3984 | unmap = true; | |
3985 | } | |
3986 | if (cmd[1] & 0x1) /* NDOB (no data-out buffer, assumes zeroes) */ | |
3987 | ndob = true; | |
3988 | lba = get_unaligned_be64(cmd + 2); | |
3989 | num = get_unaligned_be32(cmd + 10); | |
773642d9 | 3990 | if (num > sdebug_write_same_length) { |
c2248fc9 DG |
3991 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 10, -1); |
3992 | return check_condition_result; | |
3993 | } | |
3994 | return resp_write_same(scp, lba, num, ei_lba, unmap, ndob); | |
3995 | } | |
3996 | ||
acafd0b9 EM |
3997 | /* Note the mode field is in the same position as the (lower) service action |
3998 | * field. For the Report supported operation codes command, SPC-4 suggests | |
3999 | * each mode of this command should be reported separately; for future. */ | |
fd32119b DG |
4000 | static int resp_write_buffer(struct scsi_cmnd *scp, |
4001 | struct sdebug_dev_info *devip) | |
acafd0b9 EM |
4002 | { |
4003 | u8 *cmd = scp->cmnd; | |
4004 | struct scsi_device *sdp = scp->device; | |
4005 | struct sdebug_dev_info *dp; | |
4006 | u8 mode; | |
4007 | ||
4008 | mode = cmd[1] & 0x1f; | |
4009 | switch (mode) { | |
4010 | case 0x4: /* download microcode (MC) and activate (ACT) */ | |
4011 | /* set UAs on this device only */ | |
4012 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
4013 | set_bit(SDEBUG_UA_MICROCODE_CHANGED, devip->uas_bm); | |
4014 | break; | |
4015 | case 0x5: /* download MC, save and ACT */ | |
4016 | set_bit(SDEBUG_UA_MICROCODE_CHANGED_WO_RESET, devip->uas_bm); | |
4017 | break; | |
4018 | case 0x6: /* download MC with offsets and ACT */ | |
4019 | /* set UAs on most devices (LUs) in this target */ | |
4020 | list_for_each_entry(dp, | |
4021 | &devip->sdbg_host->dev_info_list, | |
4022 | dev_list) | |
4023 | if (dp->target == sdp->id) { | |
4024 | set_bit(SDEBUG_UA_BUS_RESET, dp->uas_bm); | |
4025 | if (devip != dp) | |
4026 | set_bit(SDEBUG_UA_MICROCODE_CHANGED, | |
4027 | dp->uas_bm); | |
4028 | } | |
4029 | break; | |
4030 | case 0x7: /* download MC with offsets, save, and ACT */ | |
4031 | /* set UA on all devices (LUs) in this target */ | |
4032 | list_for_each_entry(dp, | |
4033 | &devip->sdbg_host->dev_info_list, | |
4034 | dev_list) | |
4035 | if (dp->target == sdp->id) | |
4036 | set_bit(SDEBUG_UA_MICROCODE_CHANGED_WO_RESET, | |
4037 | dp->uas_bm); | |
4038 | break; | |
4039 | default: | |
4040 | /* do nothing for this command for other mode values */ | |
4041 | break; | |
4042 | } | |
4043 | return 0; | |
4044 | } | |
4045 | ||
fd32119b DG |
4046 | static int resp_comp_write(struct scsi_cmnd *scp, |
4047 | struct sdebug_dev_info *devip) | |
38d5c833 DG |
4048 | { |
4049 | u8 *cmd = scp->cmnd; | |
4050 | u8 *arr; | |
b6ff8ca7 | 4051 | struct sdeb_store_info *sip = devip2sip(devip, true); |
38d5c833 DG |
4052 | u64 lba; |
4053 | u32 dnum; | |
773642d9 | 4054 | u32 lb_size = sdebug_sector_size; |
38d5c833 | 4055 | u8 num; |
38d5c833 | 4056 | int ret; |
d467d31f | 4057 | int retval = 0; |
38d5c833 | 4058 | |
d467d31f | 4059 | lba = get_unaligned_be64(cmd + 2); |
38d5c833 DG |
4060 | num = cmd[13]; /* 1 to a maximum of 255 logical blocks */ |
4061 | if (0 == num) | |
4062 | return 0; /* degenerate case, not an error */ | |
8475c811 | 4063 | if (sdebug_dif == T10_PI_TYPE2_PROTECTION && |
38d5c833 DG |
4064 | (cmd[1] & 0xe0)) { |
4065 | mk_sense_invalid_opcode(scp); | |
4066 | return check_condition_result; | |
4067 | } | |
8475c811 CH |
4068 | if ((sdebug_dif == T10_PI_TYPE1_PROTECTION || |
4069 | sdebug_dif == T10_PI_TYPE3_PROTECTION) && | |
38d5c833 DG |
4070 | (cmd[1] & 0xe0) == 0) |
4071 | sdev_printk(KERN_ERR, scp->device, "Unprotected WR " | |
4072 | "to DIF device\n"); | |
9447b6ce MP |
4073 | ret = check_device_access_params(scp, lba, num, false); |
4074 | if (ret) | |
4075 | return ret; | |
d467d31f | 4076 | dnum = 2 * num; |
6396bb22 | 4077 | arr = kcalloc(lb_size, dnum, GFP_ATOMIC); |
d467d31f DG |
4078 | if (NULL == arr) { |
4079 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
4080 | INSUFF_RES_ASCQ); | |
4081 | return check_condition_result; | |
4082 | } | |
38d5c833 | 4083 | |
7109f370 | 4084 | sdeb_write_lock(sip); |
38d5c833 | 4085 | |
87c715dc | 4086 | ret = do_dout_fetch(scp, dnum, arr); |
38d5c833 | 4087 | if (ret == -1) { |
d467d31f DG |
4088 | retval = DID_ERROR << 16; |
4089 | goto cleanup; | |
773642d9 | 4090 | } else if (sdebug_verbose && (ret < (dnum * lb_size))) |
38d5c833 DG |
4091 | sdev_printk(KERN_INFO, scp->device, "%s: compare_write: cdb " |
4092 | "indicated=%u, IO sent=%d bytes\n", my_name, | |
4093 | dnum * lb_size, ret); | |
c3e2fe92 | 4094 | if (!comp_write_worker(sip, lba, num, arr, false)) { |
38d5c833 | 4095 | mk_sense_buffer(scp, MISCOMPARE, MISCOMPARE_VERIFY_ASC, 0); |
d467d31f DG |
4096 | retval = check_condition_result; |
4097 | goto cleanup; | |
38d5c833 DG |
4098 | } |
4099 | if (scsi_debug_lbp()) | |
87c715dc | 4100 | map_region(sip, lba, num); |
d467d31f | 4101 | cleanup: |
7109f370 | 4102 | sdeb_write_unlock(sip); |
d467d31f DG |
4103 | kfree(arr); |
4104 | return retval; | |
38d5c833 DG |
4105 | } |
4106 | ||
44d92694 MP |
4107 | struct unmap_block_desc { |
4108 | __be64 lba; | |
4109 | __be32 blocks; | |
4110 | __be32 __reserved; | |
4111 | }; | |
4112 | ||
fd32119b | 4113 | static int resp_unmap(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
44d92694 MP |
4114 | { |
4115 | unsigned char *buf; | |
4116 | struct unmap_block_desc *desc; | |
b6ff8ca7 | 4117 | struct sdeb_store_info *sip = devip2sip(devip, true); |
44d92694 MP |
4118 | unsigned int i, payload_len, descriptors; |
4119 | int ret; | |
44d92694 | 4120 | |
c2248fc9 DG |
4121 | if (!scsi_debug_lbp()) |
4122 | return 0; /* fib and say its done */ | |
4123 | payload_len = get_unaligned_be16(scp->cmnd + 7); | |
4124 | BUG_ON(scsi_bufflen(scp) != payload_len); | |
44d92694 MP |
4125 | |
4126 | descriptors = (payload_len - 8) / 16; | |
773642d9 | 4127 | if (descriptors > sdebug_unmap_max_desc) { |
c2248fc9 DG |
4128 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 7, -1); |
4129 | return check_condition_result; | |
4130 | } | |
44d92694 | 4131 | |
b333a819 | 4132 | buf = kzalloc(scsi_bufflen(scp), GFP_ATOMIC); |
c2248fc9 DG |
4133 | if (!buf) { |
4134 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
4135 | INSUFF_RES_ASCQ); | |
44d92694 | 4136 | return check_condition_result; |
c2248fc9 | 4137 | } |
44d92694 | 4138 | |
c2248fc9 | 4139 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
44d92694 MP |
4140 | |
4141 | BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2); | |
4142 | BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16); | |
4143 | ||
4144 | desc = (void *)&buf[8]; | |
4145 | ||
7109f370 | 4146 | sdeb_write_lock(sip); |
6c78cc06 | 4147 | |
44d92694 MP |
4148 | for (i = 0 ; i < descriptors ; i++) { |
4149 | unsigned long long lba = get_unaligned_be64(&desc[i].lba); | |
4150 | unsigned int num = get_unaligned_be32(&desc[i].blocks); | |
4151 | ||
9447b6ce | 4152 | ret = check_device_access_params(scp, lba, num, true); |
44d92694 MP |
4153 | if (ret) |
4154 | goto out; | |
4155 | ||
87c715dc | 4156 | unmap_region(sip, lba, num); |
44d92694 MP |
4157 | } |
4158 | ||
4159 | ret = 0; | |
4160 | ||
4161 | out: | |
7109f370 | 4162 | sdeb_write_unlock(sip); |
44d92694 MP |
4163 | kfree(buf); |
4164 | ||
4165 | return ret; | |
4166 | } | |
4167 | ||
4168 | #define SDEBUG_GET_LBA_STATUS_LEN 32 | |
4169 | ||
fd32119b DG |
4170 | static int resp_get_lba_status(struct scsi_cmnd *scp, |
4171 | struct sdebug_dev_info *devip) | |
44d92694 | 4172 | { |
c2248fc9 DG |
4173 | u8 *cmd = scp->cmnd; |
4174 | u64 lba; | |
4175 | u32 alloc_len, mapped, num; | |
44d92694 | 4176 | int ret; |
87c715dc | 4177 | u8 arr[SDEBUG_GET_LBA_STATUS_LEN]; |
44d92694 | 4178 | |
c2248fc9 DG |
4179 | lba = get_unaligned_be64(cmd + 2); |
4180 | alloc_len = get_unaligned_be32(cmd + 10); | |
44d92694 MP |
4181 | |
4182 | if (alloc_len < 24) | |
4183 | return 0; | |
4184 | ||
9447b6ce | 4185 | ret = check_device_access_params(scp, lba, 1, false); |
44d92694 MP |
4186 | if (ret) |
4187 | return ret; | |
4188 | ||
b6ff8ca7 DG |
4189 | if (scsi_debug_lbp()) { |
4190 | struct sdeb_store_info *sip = devip2sip(devip, true); | |
4191 | ||
87c715dc | 4192 | mapped = map_state(sip, lba, &num); |
b6ff8ca7 | 4193 | } else { |
c2248fc9 DG |
4194 | mapped = 1; |
4195 | /* following just in case virtual_gb changed */ | |
4196 | sdebug_capacity = get_sdebug_capacity(); | |
4197 | if (sdebug_capacity - lba <= 0xffffffff) | |
4198 | num = sdebug_capacity - lba; | |
4199 | else | |
4200 | num = 0xffffffff; | |
4201 | } | |
44d92694 MP |
4202 | |
4203 | memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN); | |
c2248fc9 DG |
4204 | put_unaligned_be32(20, arr); /* Parameter Data Length */ |
4205 | put_unaligned_be64(lba, arr + 8); /* LBA */ | |
4206 | put_unaligned_be32(num, arr + 16); /* Number of blocks */ | |
4207 | arr[20] = !mapped; /* prov_stat=0: mapped; 1: dealloc */ | |
44d92694 | 4208 | |
c2248fc9 | 4209 | return fill_from_dev_buffer(scp, arr, SDEBUG_GET_LBA_STATUS_LEN); |
44d92694 MP |
4210 | } |
4211 | ||
80c49563 DG |
4212 | static int resp_sync_cache(struct scsi_cmnd *scp, |
4213 | struct sdebug_dev_info *devip) | |
4214 | { | |
4f2c8bf6 | 4215 | int res = 0; |
80c49563 DG |
4216 | u64 lba; |
4217 | u32 num_blocks; | |
4218 | u8 *cmd = scp->cmnd; | |
4219 | ||
4220 | if (cmd[0] == SYNCHRONIZE_CACHE) { /* 10 byte cdb */ | |
4221 | lba = get_unaligned_be32(cmd + 2); | |
4222 | num_blocks = get_unaligned_be16(cmd + 7); | |
4223 | } else { /* SYNCHRONIZE_CACHE(16) */ | |
4224 | lba = get_unaligned_be64(cmd + 2); | |
4225 | num_blocks = get_unaligned_be32(cmd + 10); | |
4226 | } | |
4227 | if (lba + num_blocks > sdebug_capacity) { | |
4228 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
4229 | return check_condition_result; | |
4230 | } | |
fc13638a | 4231 | if (!write_since_sync || (cmd[1] & 0x2)) |
4f2c8bf6 DG |
4232 | res = SDEG_RES_IMMED_MASK; |
4233 | else /* delay if write_since_sync and IMMED clear */ | |
4234 | write_since_sync = false; | |
4235 | return res; | |
80c49563 DG |
4236 | } |
4237 | ||
ed9f3e25 DG |
4238 | /* |
4239 | * Assuming the LBA+num_blocks is not out-of-range, this function will return | |
4240 | * CONDITION MET if the specified blocks will/have fitted in the cache, and | |
4241 | * a GOOD status otherwise. Model a disk with a big cache and yield | |
4242 | * CONDITION MET. Actually tries to bring range in main memory into the | |
4243 | * cache associated with the CPU(s). | |
4244 | */ | |
4245 | static int resp_pre_fetch(struct scsi_cmnd *scp, | |
4246 | struct sdebug_dev_info *devip) | |
4247 | { | |
4248 | int res = 0; | |
4249 | u64 lba; | |
4250 | u64 block, rest = 0; | |
4251 | u32 nblks; | |
4252 | u8 *cmd = scp->cmnd; | |
b6ff8ca7 | 4253 | struct sdeb_store_info *sip = devip2sip(devip, true); |
b6ff8ca7 | 4254 | u8 *fsp = sip->storep; |
ed9f3e25 DG |
4255 | |
4256 | if (cmd[0] == PRE_FETCH) { /* 10 byte cdb */ | |
4257 | lba = get_unaligned_be32(cmd + 2); | |
4258 | nblks = get_unaligned_be16(cmd + 7); | |
4259 | } else { /* PRE-FETCH(16) */ | |
4260 | lba = get_unaligned_be64(cmd + 2); | |
4261 | nblks = get_unaligned_be32(cmd + 10); | |
4262 | } | |
4263 | if (lba + nblks > sdebug_capacity) { | |
4264 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
4265 | return check_condition_result; | |
4266 | } | |
4267 | if (!fsp) | |
4268 | goto fini; | |
4269 | /* PRE-FETCH spec says nothing about LBP or PI so skip them */ | |
4270 | block = do_div(lba, sdebug_store_sectors); | |
4271 | if (block + nblks > sdebug_store_sectors) | |
4272 | rest = block + nblks - sdebug_store_sectors; | |
4273 | ||
4274 | /* Try to bring the PRE-FETCH range into CPU's cache */ | |
7109f370 | 4275 | sdeb_read_lock(sip); |
ed9f3e25 DG |
4276 | prefetch_range(fsp + (sdebug_sector_size * block), |
4277 | (nblks - rest) * sdebug_sector_size); | |
4278 | if (rest) | |
4279 | prefetch_range(fsp, rest * sdebug_sector_size); | |
7109f370 | 4280 | sdeb_read_unlock(sip); |
ed9f3e25 DG |
4281 | fini: |
4282 | if (cmd[1] & 0x2) | |
4283 | res = SDEG_RES_IMMED_MASK; | |
4284 | return res | condition_met_result; | |
4285 | } | |
4286 | ||
fb0cc8d1 DG |
4287 | #define RL_BUCKET_ELEMS 8 |
4288 | ||
8d039e22 DG |
4289 | /* Even though each pseudo target has a REPORT LUNS "well known logical unit" |
4290 | * (W-LUN), the normal Linux scanning logic does not associate it with a | |
4291 | * device (e.g. /dev/sg7). The following magic will make that association: | |
4292 | * "cd /sys/class/scsi_host/host<n> ; echo '- - 49409' > scan" | |
4293 | * where <n> is a host number. If there are multiple targets in a host then | |
4294 | * the above will associate a W-LUN to each target. To only get a W-LUN | |
4295 | * for target 2, then use "echo '- 2 49409' > scan" . | |
4296 | */ | |
4297 | static int resp_report_luns(struct scsi_cmnd *scp, | |
4298 | struct sdebug_dev_info *devip) | |
1da177e4 | 4299 | { |
8d039e22 | 4300 | unsigned char *cmd = scp->cmnd; |
1da177e4 | 4301 | unsigned int alloc_len; |
8d039e22 | 4302 | unsigned char select_report; |
22017ed2 | 4303 | u64 lun; |
8d039e22 | 4304 | struct scsi_lun *lun_p; |
fb0cc8d1 | 4305 | u8 arr[RL_BUCKET_ELEMS * sizeof(struct scsi_lun)]; |
8d039e22 DG |
4306 | unsigned int lun_cnt; /* normal LUN count (max: 256) */ |
4307 | unsigned int wlun_cnt; /* report luns W-LUN count */ | |
4308 | unsigned int tlun_cnt; /* total LUN count */ | |
4309 | unsigned int rlen; /* response length (in bytes) */ | |
fb0cc8d1 DG |
4310 | int k, j, n, res; |
4311 | unsigned int off_rsp = 0; | |
4312 | const int sz_lun = sizeof(struct scsi_lun); | |
1da177e4 | 4313 | |
19c8ead7 | 4314 | clear_luns_changed_on_target(devip); |
8d039e22 DG |
4315 | |
4316 | select_report = cmd[2]; | |
4317 | alloc_len = get_unaligned_be32(cmd + 6); | |
4318 | ||
4319 | if (alloc_len < 4) { | |
4320 | pr_err("alloc len too small %d\n", alloc_len); | |
4321 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); | |
1da177e4 LT |
4322 | return check_condition_result; |
4323 | } | |
8d039e22 DG |
4324 | |
4325 | switch (select_report) { | |
4326 | case 0: /* all LUNs apart from W-LUNs */ | |
4327 | lun_cnt = sdebug_max_luns; | |
4328 | wlun_cnt = 0; | |
4329 | break; | |
4330 | case 1: /* only W-LUNs */ | |
c65b1445 | 4331 | lun_cnt = 0; |
8d039e22 DG |
4332 | wlun_cnt = 1; |
4333 | break; | |
4334 | case 2: /* all LUNs */ | |
4335 | lun_cnt = sdebug_max_luns; | |
4336 | wlun_cnt = 1; | |
4337 | break; | |
4338 | case 0x10: /* only administrative LUs */ | |
4339 | case 0x11: /* see SPC-5 */ | |
4340 | case 0x12: /* only subsiduary LUs owned by referenced LU */ | |
4341 | default: | |
4342 | pr_debug("select report invalid %d\n", select_report); | |
4343 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); | |
4344 | return check_condition_result; | |
4345 | } | |
4346 | ||
4347 | if (sdebug_no_lun_0 && (lun_cnt > 0)) | |
c65b1445 | 4348 | --lun_cnt; |
8d039e22 DG |
4349 | |
4350 | tlun_cnt = lun_cnt + wlun_cnt; | |
fb0cc8d1 DG |
4351 | rlen = tlun_cnt * sz_lun; /* excluding 8 byte header */ |
4352 | scsi_set_resid(scp, scsi_bufflen(scp)); | |
8d039e22 DG |
4353 | pr_debug("select_report %d luns = %d wluns = %d no_lun0 %d\n", |
4354 | select_report, lun_cnt, wlun_cnt, sdebug_no_lun_0); | |
4355 | ||
fb0cc8d1 | 4356 | /* loops rely on sizeof response header same as sizeof lun (both 8) */ |
8d039e22 | 4357 | lun = sdebug_no_lun_0 ? 1 : 0; |
fb0cc8d1 DG |
4358 | for (k = 0, j = 0, res = 0; true; ++k, j = 0) { |
4359 | memset(arr, 0, sizeof(arr)); | |
4360 | lun_p = (struct scsi_lun *)&arr[0]; | |
4361 | if (k == 0) { | |
4362 | put_unaligned_be32(rlen, &arr[0]); | |
4363 | ++lun_p; | |
4364 | j = 1; | |
4365 | } | |
4366 | for ( ; j < RL_BUCKET_ELEMS; ++j, ++lun_p) { | |
4367 | if ((k * RL_BUCKET_ELEMS) + j > lun_cnt) | |
4368 | break; | |
4369 | int_to_scsilun(lun++, lun_p); | |
ad0c7775 DG |
4370 | if (lun > 1 && sdebug_lun_am == SAM_LUN_AM_FLAT) |
4371 | lun_p->scsi_lun[0] |= 0x40; | |
fb0cc8d1 DG |
4372 | } |
4373 | if (j < RL_BUCKET_ELEMS) | |
4374 | break; | |
4375 | n = j * sz_lun; | |
4376 | res = p_fill_from_dev_buffer(scp, arr, n, off_rsp); | |
4377 | if (res) | |
4378 | return res; | |
4379 | off_rsp += n; | |
4380 | } | |
4381 | if (wlun_cnt) { | |
4382 | int_to_scsilun(SCSI_W_LUN_REPORT_LUNS, lun_p); | |
4383 | ++j; | |
4384 | } | |
4385 | if (j > 0) | |
4386 | res = p_fill_from_dev_buffer(scp, arr, j * sz_lun, off_rsp); | |
8d039e22 | 4387 | return res; |
1da177e4 LT |
4388 | } |
4389 | ||
c3e2fe92 DG |
4390 | static int resp_verify(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
4391 | { | |
4392 | bool is_bytchk3 = false; | |
4393 | u8 bytchk; | |
4394 | int ret, j; | |
4395 | u32 vnum, a_num, off; | |
4396 | const u32 lb_size = sdebug_sector_size; | |
c3e2fe92 DG |
4397 | u64 lba; |
4398 | u8 *arr; | |
4399 | u8 *cmd = scp->cmnd; | |
b6ff8ca7 | 4400 | struct sdeb_store_info *sip = devip2sip(devip, true); |
c3e2fe92 DG |
4401 | |
4402 | bytchk = (cmd[1] >> 1) & 0x3; | |
4403 | if (bytchk == 0) { | |
4404 | return 0; /* always claim internal verify okay */ | |
4405 | } else if (bytchk == 2) { | |
4406 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 2); | |
4407 | return check_condition_result; | |
4408 | } else if (bytchk == 3) { | |
4409 | is_bytchk3 = true; /* 1 block sent, compared repeatedly */ | |
4410 | } | |
4411 | switch (cmd[0]) { | |
4412 | case VERIFY_16: | |
4413 | lba = get_unaligned_be64(cmd + 2); | |
4414 | vnum = get_unaligned_be32(cmd + 10); | |
4415 | break; | |
4416 | case VERIFY: /* is VERIFY(10) */ | |
4417 | lba = get_unaligned_be32(cmd + 2); | |
4418 | vnum = get_unaligned_be16(cmd + 7); | |
4419 | break; | |
4420 | default: | |
4421 | mk_sense_invalid_opcode(scp); | |
4422 | return check_condition_result; | |
4423 | } | |
3344b58b GK |
4424 | if (vnum == 0) |
4425 | return 0; /* not an error */ | |
c3e2fe92 DG |
4426 | a_num = is_bytchk3 ? 1 : vnum; |
4427 | /* Treat following check like one for read (i.e. no write) access */ | |
4428 | ret = check_device_access_params(scp, lba, a_num, false); | |
4429 | if (ret) | |
4430 | return ret; | |
4431 | ||
4432 | arr = kcalloc(lb_size, vnum, GFP_ATOMIC); | |
4433 | if (!arr) { | |
4434 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
4435 | INSUFF_RES_ASCQ); | |
4436 | return check_condition_result; | |
4437 | } | |
4438 | /* Not changing store, so only need read access */ | |
7109f370 | 4439 | sdeb_read_lock(sip); |
c3e2fe92 DG |
4440 | |
4441 | ret = do_dout_fetch(scp, a_num, arr); | |
4442 | if (ret == -1) { | |
4443 | ret = DID_ERROR << 16; | |
4444 | goto cleanup; | |
4445 | } else if (sdebug_verbose && (ret < (a_num * lb_size))) { | |
4446 | sdev_printk(KERN_INFO, scp->device, | |
4447 | "%s: %s: cdb indicated=%u, IO sent=%d bytes\n", | |
4448 | my_name, __func__, a_num * lb_size, ret); | |
4449 | } | |
4450 | if (is_bytchk3) { | |
4451 | for (j = 1, off = lb_size; j < vnum; ++j, off += lb_size) | |
4452 | memcpy(arr + off, arr, lb_size); | |
4453 | } | |
4454 | ret = 0; | |
4455 | if (!comp_write_worker(sip, lba, vnum, arr, true)) { | |
4456 | mk_sense_buffer(scp, MISCOMPARE, MISCOMPARE_VERIFY_ASC, 0); | |
4457 | ret = check_condition_result; | |
4458 | goto cleanup; | |
4459 | } | |
4460 | cleanup: | |
7109f370 | 4461 | sdeb_read_unlock(sip); |
c3e2fe92 DG |
4462 | kfree(arr); |
4463 | return ret; | |
4464 | } | |
4465 | ||
f0d1cf93 DG |
4466 | #define RZONES_DESC_HD 64 |
4467 | ||
897284e8 | 4468 | /* Report zones depending on start LBA and reporting options */ |
f0d1cf93 DG |
4469 | static int resp_report_zones(struct scsi_cmnd *scp, |
4470 | struct sdebug_dev_info *devip) | |
4471 | { | |
4a5fc1c6 | 4472 | unsigned int rep_max_zones, nrz = 0; |
f0d1cf93 DG |
4473 | int ret = 0; |
4474 | u32 alloc_len, rep_opts, rep_len; | |
4475 | bool partial; | |
4476 | u64 lba, zs_lba; | |
4477 | u8 *arr = NULL, *desc; | |
4478 | u8 *cmd = scp->cmnd; | |
4a5fc1c6 | 4479 | struct sdeb_zone_state *zsp = NULL; |
b6ff8ca7 | 4480 | struct sdeb_store_info *sip = devip2sip(devip, false); |
f0d1cf93 DG |
4481 | |
4482 | if (!sdebug_dev_is_zoned(devip)) { | |
4483 | mk_sense_invalid_opcode(scp); | |
4484 | return check_condition_result; | |
4485 | } | |
4486 | zs_lba = get_unaligned_be64(cmd + 2); | |
4487 | alloc_len = get_unaligned_be32(cmd + 10); | |
3344b58b GK |
4488 | if (alloc_len == 0) |
4489 | return 0; /* not an error */ | |
f0d1cf93 DG |
4490 | rep_opts = cmd[14] & 0x3f; |
4491 | partial = cmd[14] & 0x80; | |
4492 | ||
4493 | if (zs_lba >= sdebug_capacity) { | |
4494 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
4495 | return check_condition_result; | |
4496 | } | |
4497 | ||
4a5fc1c6 | 4498 | rep_max_zones = (alloc_len - 64) >> ilog2(RZONES_DESC_HD); |
f0d1cf93 | 4499 | |
7db0e0c8 | 4500 | arr = kzalloc(alloc_len, GFP_ATOMIC); |
f0d1cf93 DG |
4501 | if (!arr) { |
4502 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
4503 | INSUFF_RES_ASCQ); | |
4504 | return check_condition_result; | |
4505 | } | |
4506 | ||
7109f370 | 4507 | sdeb_read_lock(sip); |
f0d1cf93 DG |
4508 | |
4509 | desc = arr + 64; | |
4a5fc1c6 DLM |
4510 | for (lba = zs_lba; lba < sdebug_capacity; |
4511 | lba = zsp->z_start + zsp->z_size) { | |
4512 | if (WARN_ONCE(zbc_zone(devip, lba) == zsp, "lba = %llu\n", lba)) | |
f0d1cf93 DG |
4513 | break; |
4514 | zsp = zbc_zone(devip, lba); | |
4515 | switch (rep_opts) { | |
4516 | case 0x00: | |
4517 | /* All zones */ | |
4518 | break; | |
4519 | case 0x01: | |
4520 | /* Empty zones */ | |
4521 | if (zsp->z_cond != ZC1_EMPTY) | |
4522 | continue; | |
4523 | break; | |
4524 | case 0x02: | |
4525 | /* Implicit open zones */ | |
4526 | if (zsp->z_cond != ZC2_IMPLICIT_OPEN) | |
4527 | continue; | |
4528 | break; | |
4529 | case 0x03: | |
4530 | /* Explicit open zones */ | |
4531 | if (zsp->z_cond != ZC3_EXPLICIT_OPEN) | |
4532 | continue; | |
4533 | break; | |
4534 | case 0x04: | |
4535 | /* Closed zones */ | |
4536 | if (zsp->z_cond != ZC4_CLOSED) | |
4537 | continue; | |
4538 | break; | |
4539 | case 0x05: | |
4540 | /* Full zones */ | |
4541 | if (zsp->z_cond != ZC5_FULL) | |
4542 | continue; | |
4543 | break; | |
4544 | case 0x06: | |
4545 | case 0x07: | |
4546 | case 0x10: | |
f0d1cf93 | 4547 | /* |
64e14ece DLM |
4548 | * Read-only, offline, reset WP recommended are |
4549 | * not emulated: no zones to report; | |
f0d1cf93 DG |
4550 | */ |
4551 | continue; | |
64e14ece DLM |
4552 | case 0x11: |
4553 | /* non-seq-resource set */ | |
4554 | if (!zsp->z_non_seq_resource) | |
4555 | continue; | |
4556 | break; | |
4a5fc1c6 DLM |
4557 | case 0x3e: |
4558 | /* All zones except gap zones. */ | |
4559 | if (zbc_zone_is_gap(zsp)) | |
4560 | continue; | |
4561 | break; | |
f0d1cf93 DG |
4562 | case 0x3f: |
4563 | /* Not write pointer (conventional) zones */ | |
4a5fc1c6 | 4564 | if (zbc_zone_is_seq(zsp)) |
f0d1cf93 DG |
4565 | continue; |
4566 | break; | |
4567 | default: | |
4568 | mk_sense_buffer(scp, ILLEGAL_REQUEST, | |
4569 | INVALID_FIELD_IN_CDB, 0); | |
4570 | ret = check_condition_result; | |
4571 | goto fini; | |
4572 | } | |
4573 | ||
4574 | if (nrz < rep_max_zones) { | |
4575 | /* Fill zone descriptor */ | |
64e14ece | 4576 | desc[0] = zsp->z_type; |
f0d1cf93 | 4577 | desc[1] = zsp->z_cond << 4; |
64e14ece DLM |
4578 | if (zsp->z_non_seq_resource) |
4579 | desc[1] |= 1 << 1; | |
f0d1cf93 DG |
4580 | put_unaligned_be64((u64)zsp->z_size, desc + 8); |
4581 | put_unaligned_be64((u64)zsp->z_start, desc + 16); | |
4582 | put_unaligned_be64((u64)zsp->z_wp, desc + 24); | |
4583 | desc += 64; | |
4584 | } | |
4585 | ||
4586 | if (partial && nrz >= rep_max_zones) | |
4587 | break; | |
4588 | ||
4589 | nrz++; | |
4590 | } | |
4591 | ||
4592 | /* Report header */ | |
4a5fc1c6 | 4593 | /* Zone list length. */ |
f0d1cf93 | 4594 | put_unaligned_be32(nrz * RZONES_DESC_HD, arr + 0); |
4a5fc1c6 | 4595 | /* Maximum LBA */ |
f0d1cf93 | 4596 | put_unaligned_be64(sdebug_capacity - 1, arr + 8); |
4a5fc1c6 DLM |
4597 | /* Zone starting LBA granularity. */ |
4598 | if (devip->zcap < devip->zsize) | |
4599 | put_unaligned_be64(devip->zsize, arr + 16); | |
f0d1cf93 DG |
4600 | |
4601 | rep_len = (unsigned long)desc - (unsigned long)arr; | |
36e07d7e | 4602 | ret = fill_from_dev_buffer(scp, arr, min_t(u32, alloc_len, rep_len)); |
f0d1cf93 DG |
4603 | |
4604 | fini: | |
7109f370 | 4605 | sdeb_read_unlock(sip); |
f0d1cf93 DG |
4606 | kfree(arr); |
4607 | return ret; | |
4608 | } | |
4609 | ||
4610 | /* Logic transplanted from tcmu-runner, file_zbc.c */ | |
4611 | static void zbc_open_all(struct sdebug_dev_info *devip) | |
4612 | { | |
4613 | struct sdeb_zone_state *zsp = &devip->zstate[0]; | |
4614 | unsigned int i; | |
4615 | ||
4616 | for (i = 0; i < devip->nr_zones; i++, zsp++) { | |
4617 | if (zsp->z_cond == ZC4_CLOSED) | |
4618 | zbc_open_zone(devip, &devip->zstate[i], true); | |
4619 | } | |
4620 | } | |
4621 | ||
4622 | static int resp_open_zone(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
4623 | { | |
4624 | int res = 0; | |
4625 | u64 z_id; | |
4626 | enum sdebug_z_cond zc; | |
4627 | u8 *cmd = scp->cmnd; | |
4628 | struct sdeb_zone_state *zsp; | |
4629 | bool all = cmd[14] & 0x01; | |
b6ff8ca7 | 4630 | struct sdeb_store_info *sip = devip2sip(devip, false); |
f0d1cf93 DG |
4631 | |
4632 | if (!sdebug_dev_is_zoned(devip)) { | |
4633 | mk_sense_invalid_opcode(scp); | |
4634 | return check_condition_result; | |
4635 | } | |
4636 | ||
7109f370 | 4637 | sdeb_write_lock(sip); |
f0d1cf93 DG |
4638 | |
4639 | if (all) { | |
4640 | /* Check if all closed zones can be open */ | |
4641 | if (devip->max_open && | |
4642 | devip->nr_exp_open + devip->nr_closed > devip->max_open) { | |
4643 | mk_sense_buffer(scp, DATA_PROTECT, INSUFF_RES_ASC, | |
4644 | INSUFF_ZONE_ASCQ); | |
4645 | res = check_condition_result; | |
4646 | goto fini; | |
4647 | } | |
4648 | /* Open all closed zones */ | |
4649 | zbc_open_all(devip); | |
4650 | goto fini; | |
4651 | } | |
4652 | ||
4653 | /* Open the specified zone */ | |
4654 | z_id = get_unaligned_be64(cmd + 2); | |
4655 | if (z_id >= sdebug_capacity) { | |
4656 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
4657 | res = check_condition_result; | |
4658 | goto fini; | |
4659 | } | |
4660 | ||
4661 | zsp = zbc_zone(devip, z_id); | |
4662 | if (z_id != zsp->z_start) { | |
4663 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
4664 | res = check_condition_result; | |
4665 | goto fini; | |
4666 | } | |
4667 | if (zbc_zone_is_conv(zsp)) { | |
4668 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
4669 | res = check_condition_result; | |
4670 | goto fini; | |
4671 | } | |
4672 | ||
4673 | zc = zsp->z_cond; | |
4674 | if (zc == ZC3_EXPLICIT_OPEN || zc == ZC5_FULL) | |
4675 | goto fini; | |
4676 | ||
4677 | if (devip->max_open && devip->nr_exp_open >= devip->max_open) { | |
4678 | mk_sense_buffer(scp, DATA_PROTECT, INSUFF_RES_ASC, | |
4679 | INSUFF_ZONE_ASCQ); | |
4680 | res = check_condition_result; | |
4681 | goto fini; | |
4682 | } | |
4683 | ||
f0d1cf93 DG |
4684 | zbc_open_zone(devip, zsp, true); |
4685 | fini: | |
7109f370 | 4686 | sdeb_write_unlock(sip); |
f0d1cf93 DG |
4687 | return res; |
4688 | } | |
4689 | ||
4690 | static void zbc_close_all(struct sdebug_dev_info *devip) | |
4691 | { | |
4692 | unsigned int i; | |
4693 | ||
4694 | for (i = 0; i < devip->nr_zones; i++) | |
4695 | zbc_close_zone(devip, &devip->zstate[i]); | |
4696 | } | |
4697 | ||
4698 | static int resp_close_zone(struct scsi_cmnd *scp, | |
4699 | struct sdebug_dev_info *devip) | |
4700 | { | |
4701 | int res = 0; | |
4702 | u64 z_id; | |
4703 | u8 *cmd = scp->cmnd; | |
4704 | struct sdeb_zone_state *zsp; | |
4705 | bool all = cmd[14] & 0x01; | |
b6ff8ca7 | 4706 | struct sdeb_store_info *sip = devip2sip(devip, false); |
f0d1cf93 DG |
4707 | |
4708 | if (!sdebug_dev_is_zoned(devip)) { | |
4709 | mk_sense_invalid_opcode(scp); | |
4710 | return check_condition_result; | |
4711 | } | |
4712 | ||
7109f370 | 4713 | sdeb_write_lock(sip); |
f0d1cf93 DG |
4714 | |
4715 | if (all) { | |
4716 | zbc_close_all(devip); | |
4717 | goto fini; | |
4718 | } | |
4719 | ||
4720 | /* Close specified zone */ | |
4721 | z_id = get_unaligned_be64(cmd + 2); | |
4722 | if (z_id >= sdebug_capacity) { | |
4723 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
4724 | res = check_condition_result; | |
4725 | goto fini; | |
4726 | } | |
4727 | ||
4728 | zsp = zbc_zone(devip, z_id); | |
4729 | if (z_id != zsp->z_start) { | |
4730 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
4731 | res = check_condition_result; | |
4732 | goto fini; | |
4733 | } | |
4734 | if (zbc_zone_is_conv(zsp)) { | |
4735 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
4736 | res = check_condition_result; | |
4737 | goto fini; | |
4738 | } | |
4739 | ||
4740 | zbc_close_zone(devip, zsp); | |
4741 | fini: | |
7109f370 | 4742 | sdeb_write_unlock(sip); |
f0d1cf93 DG |
4743 | return res; |
4744 | } | |
4745 | ||
4746 | static void zbc_finish_zone(struct sdebug_dev_info *devip, | |
4747 | struct sdeb_zone_state *zsp, bool empty) | |
4748 | { | |
4749 | enum sdebug_z_cond zc = zsp->z_cond; | |
4750 | ||
4751 | if (zc == ZC4_CLOSED || zc == ZC2_IMPLICIT_OPEN || | |
4752 | zc == ZC3_EXPLICIT_OPEN || (empty && zc == ZC1_EMPTY)) { | |
4753 | if (zc == ZC2_IMPLICIT_OPEN || zc == ZC3_EXPLICIT_OPEN) | |
4754 | zbc_close_zone(devip, zsp); | |
4755 | if (zsp->z_cond == ZC4_CLOSED) | |
4756 | devip->nr_closed--; | |
4757 | zsp->z_wp = zsp->z_start + zsp->z_size; | |
4758 | zsp->z_cond = ZC5_FULL; | |
4759 | } | |
4760 | } | |
4761 | ||
4762 | static void zbc_finish_all(struct sdebug_dev_info *devip) | |
4763 | { | |
4764 | unsigned int i; | |
4765 | ||
4766 | for (i = 0; i < devip->nr_zones; i++) | |
4767 | zbc_finish_zone(devip, &devip->zstate[i], false); | |
4768 | } | |
4769 | ||
4770 | static int resp_finish_zone(struct scsi_cmnd *scp, | |
4771 | struct sdebug_dev_info *devip) | |
4772 | { | |
4773 | struct sdeb_zone_state *zsp; | |
4774 | int res = 0; | |
4775 | u64 z_id; | |
4776 | u8 *cmd = scp->cmnd; | |
4777 | bool all = cmd[14] & 0x01; | |
b6ff8ca7 | 4778 | struct sdeb_store_info *sip = devip2sip(devip, false); |
f0d1cf93 DG |
4779 | |
4780 | if (!sdebug_dev_is_zoned(devip)) { | |
4781 | mk_sense_invalid_opcode(scp); | |
4782 | return check_condition_result; | |
4783 | } | |
4784 | ||
7109f370 | 4785 | sdeb_write_lock(sip); |
f0d1cf93 DG |
4786 | |
4787 | if (all) { | |
4788 | zbc_finish_all(devip); | |
4789 | goto fini; | |
4790 | } | |
4791 | ||
4792 | /* Finish the specified zone */ | |
4793 | z_id = get_unaligned_be64(cmd + 2); | |
4794 | if (z_id >= sdebug_capacity) { | |
4795 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
4796 | res = check_condition_result; | |
4797 | goto fini; | |
4798 | } | |
4799 | ||
4800 | zsp = zbc_zone(devip, z_id); | |
4801 | if (z_id != zsp->z_start) { | |
4802 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
4803 | res = check_condition_result; | |
4804 | goto fini; | |
4805 | } | |
4806 | if (zbc_zone_is_conv(zsp)) { | |
4807 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
4808 | res = check_condition_result; | |
4809 | goto fini; | |
4810 | } | |
4811 | ||
4812 | zbc_finish_zone(devip, zsp, true); | |
4813 | fini: | |
7109f370 | 4814 | sdeb_write_unlock(sip); |
f0d1cf93 DG |
4815 | return res; |
4816 | } | |
4817 | ||
4818 | static void zbc_rwp_zone(struct sdebug_dev_info *devip, | |
4819 | struct sdeb_zone_state *zsp) | |
4820 | { | |
4821 | enum sdebug_z_cond zc; | |
2d62253e | 4822 | struct sdeb_store_info *sip = devip2sip(devip, false); |
f0d1cf93 | 4823 | |
4a5fc1c6 | 4824 | if (!zbc_zone_is_seq(zsp)) |
f0d1cf93 DG |
4825 | return; |
4826 | ||
4827 | zc = zsp->z_cond; | |
4828 | if (zc == ZC2_IMPLICIT_OPEN || zc == ZC3_EXPLICIT_OPEN) | |
4829 | zbc_close_zone(devip, zsp); | |
4830 | ||
4831 | if (zsp->z_cond == ZC4_CLOSED) | |
4832 | devip->nr_closed--; | |
4833 | ||
2d62253e SK |
4834 | if (zsp->z_wp > zsp->z_start) |
4835 | memset(sip->storep + zsp->z_start * sdebug_sector_size, 0, | |
4836 | (zsp->z_wp - zsp->z_start) * sdebug_sector_size); | |
4837 | ||
64e14ece | 4838 | zsp->z_non_seq_resource = false; |
f0d1cf93 DG |
4839 | zsp->z_wp = zsp->z_start; |
4840 | zsp->z_cond = ZC1_EMPTY; | |
4841 | } | |
4842 | ||
4843 | static void zbc_rwp_all(struct sdebug_dev_info *devip) | |
4844 | { | |
4845 | unsigned int i; | |
4846 | ||
4847 | for (i = 0; i < devip->nr_zones; i++) | |
4848 | zbc_rwp_zone(devip, &devip->zstate[i]); | |
4849 | } | |
4850 | ||
4851 | static int resp_rwp_zone(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
4852 | { | |
4853 | struct sdeb_zone_state *zsp; | |
4854 | int res = 0; | |
4855 | u64 z_id; | |
4856 | u8 *cmd = scp->cmnd; | |
4857 | bool all = cmd[14] & 0x01; | |
b6ff8ca7 | 4858 | struct sdeb_store_info *sip = devip2sip(devip, false); |
f0d1cf93 DG |
4859 | |
4860 | if (!sdebug_dev_is_zoned(devip)) { | |
4861 | mk_sense_invalid_opcode(scp); | |
4862 | return check_condition_result; | |
4863 | } | |
4864 | ||
7109f370 | 4865 | sdeb_write_lock(sip); |
f0d1cf93 DG |
4866 | |
4867 | if (all) { | |
4868 | zbc_rwp_all(devip); | |
4869 | goto fini; | |
4870 | } | |
4871 | ||
4872 | z_id = get_unaligned_be64(cmd + 2); | |
4873 | if (z_id >= sdebug_capacity) { | |
4874 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
4875 | res = check_condition_result; | |
4876 | goto fini; | |
4877 | } | |
4878 | ||
4879 | zsp = zbc_zone(devip, z_id); | |
4880 | if (z_id != zsp->z_start) { | |
4881 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
4882 | res = check_condition_result; | |
4883 | goto fini; | |
4884 | } | |
4885 | if (zbc_zone_is_conv(zsp)) { | |
4886 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
4887 | res = check_condition_result; | |
4888 | goto fini; | |
4889 | } | |
4890 | ||
4891 | zbc_rwp_zone(devip, zsp); | |
4892 | fini: | |
7109f370 | 4893 | sdeb_write_unlock(sip); |
f0d1cf93 DG |
4894 | return res; |
4895 | } | |
4896 | ||
c4837394 DG |
4897 | static struct sdebug_queue *get_queue(struct scsi_cmnd *cmnd) |
4898 | { | |
c10fa55f | 4899 | u16 hwq; |
a6e76e6f | 4900 | u32 tag = blk_mq_unique_tag(scsi_cmd_to_rq(cmnd)); |
c4837394 | 4901 | |
f7c4cdc7 | 4902 | hwq = blk_mq_unique_tag_to_hwq(tag); |
c10fa55f | 4903 | |
f7c4cdc7 JG |
4904 | pr_debug("tag=%#x, hwq=%d\n", tag, hwq); |
4905 | if (WARN_ON_ONCE(hwq >= submit_queues)) | |
4906 | hwq = 0; | |
c10fa55f | 4907 | |
458df78b | 4908 | return sdebug_q_arr + hwq; |
c4837394 DG |
4909 | } |
4910 | ||
c10fa55f JG |
4911 | static u32 get_tag(struct scsi_cmnd *cmnd) |
4912 | { | |
a6e76e6f | 4913 | return blk_mq_unique_tag(scsi_cmd_to_rq(cmnd)); |
c10fa55f JG |
4914 | } |
4915 | ||
c4837394 | 4916 | /* Queued (deferred) command completions converge here. */ |
fd32119b | 4917 | static void sdebug_q_cmd_complete(struct sdebug_defer *sd_dp) |
1da177e4 | 4918 | { |
7382f9d8 | 4919 | bool aborted = sd_dp->aborted; |
c4837394 | 4920 | int qc_idx; |
cbf67842 | 4921 | int retiring = 0; |
1da177e4 | 4922 | unsigned long iflags; |
c4837394 | 4923 | struct sdebug_queue *sqp; |
cbf67842 DG |
4924 | struct sdebug_queued_cmd *sqcp; |
4925 | struct scsi_cmnd *scp; | |
4926 | struct sdebug_dev_info *devip; | |
1da177e4 | 4927 | |
7382f9d8 DG |
4928 | if (unlikely(aborted)) |
4929 | sd_dp->aborted = false; | |
c4837394 DG |
4930 | qc_idx = sd_dp->qc_idx; |
4931 | sqp = sdebug_q_arr + sd_dp->sqa_idx; | |
4932 | if (sdebug_statistics) { | |
4933 | atomic_inc(&sdebug_completions); | |
4934 | if (raw_smp_processor_id() != sd_dp->issuing_cpu) | |
4935 | atomic_inc(&sdebug_miss_cpus); | |
4936 | } | |
4937 | if (unlikely((qc_idx < 0) || (qc_idx >= SDEBUG_CANQUEUE))) { | |
4938 | pr_err("wild qc_idx=%d\n", qc_idx); | |
1da177e4 LT |
4939 | return; |
4940 | } | |
c4837394 | 4941 | spin_lock_irqsave(&sqp->qc_lock, iflags); |
d9d23a5a | 4942 | WRITE_ONCE(sd_dp->defer_t, SDEB_DEFER_NONE); |
c4837394 | 4943 | sqcp = &sqp->qc_arr[qc_idx]; |
cbf67842 | 4944 | scp = sqcp->a_cmnd; |
b01f6f83 | 4945 | if (unlikely(scp == NULL)) { |
c4837394 | 4946 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
c10fa55f JG |
4947 | pr_err("scp is NULL, sqa_idx=%d, qc_idx=%d, hc_idx=%d\n", |
4948 | sd_dp->sqa_idx, qc_idx, sd_dp->hc_idx); | |
cbf67842 DG |
4949 | return; |
4950 | } | |
4951 | devip = (struct sdebug_dev_info *)scp->device->hostdata; | |
f46eb0e9 | 4952 | if (likely(devip)) |
cbf67842 DG |
4953 | atomic_dec(&devip->num_in_q); |
4954 | else | |
c1287970 | 4955 | pr_err("devip=NULL\n"); |
f46eb0e9 | 4956 | if (unlikely(atomic_read(&retired_max_queue) > 0)) |
cbf67842 DG |
4957 | retiring = 1; |
4958 | ||
4959 | sqcp->a_cmnd = NULL; | |
c4837394 DG |
4960 | if (unlikely(!test_and_clear_bit(qc_idx, sqp->in_use_bm))) { |
4961 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); | |
c1287970 | 4962 | pr_err("Unexpected completion\n"); |
1da177e4 LT |
4963 | return; |
4964 | } | |
cbf67842 DG |
4965 | |
4966 | if (unlikely(retiring)) { /* user has reduced max_queue */ | |
4967 | int k, retval; | |
4968 | ||
4969 | retval = atomic_read(&retired_max_queue); | |
c4837394 DG |
4970 | if (qc_idx >= retval) { |
4971 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); | |
c1287970 | 4972 | pr_err("index %d too large\n", retval); |
cbf67842 DG |
4973 | return; |
4974 | } | |
c4837394 | 4975 | k = find_last_bit(sqp->in_use_bm, retval); |
773642d9 | 4976 | if ((k < sdebug_max_queue) || (k == retval)) |
cbf67842 DG |
4977 | atomic_set(&retired_max_queue, 0); |
4978 | else | |
4979 | atomic_set(&retired_max_queue, k + 1); | |
1da177e4 | 4980 | } |
c4837394 | 4981 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
7382f9d8 DG |
4982 | if (unlikely(aborted)) { |
4983 | if (sdebug_verbose) | |
4984 | pr_info("bypassing scsi_done() due to aborted cmd\n"); | |
4985 | return; | |
4986 | } | |
6c2c7d6a | 4987 | scsi_done(scp); /* callback to mid level */ |
1da177e4 LT |
4988 | } |
4989 | ||
cbf67842 | 4990 | /* When high resolution timer goes off this function is called. */ |
fd32119b | 4991 | static enum hrtimer_restart sdebug_q_cmd_hrt_complete(struct hrtimer *timer) |
cbf67842 | 4992 | { |
a10bc12a DG |
4993 | struct sdebug_defer *sd_dp = container_of(timer, struct sdebug_defer, |
4994 | hrt); | |
4995 | sdebug_q_cmd_complete(sd_dp); | |
cbf67842 DG |
4996 | return HRTIMER_NORESTART; |
4997 | } | |
1da177e4 | 4998 | |
a10bc12a | 4999 | /* When work queue schedules work, it calls this function. */ |
fd32119b | 5000 | static void sdebug_q_cmd_wq_complete(struct work_struct *work) |
a10bc12a DG |
5001 | { |
5002 | struct sdebug_defer *sd_dp = container_of(work, struct sdebug_defer, | |
5003 | ew.work); | |
5004 | sdebug_q_cmd_complete(sd_dp); | |
5005 | } | |
5006 | ||
09ba24c1 | 5007 | static bool got_shared_uuid; |
bf476433 | 5008 | static uuid_t shared_uuid; |
09ba24c1 | 5009 | |
f0d1cf93 DG |
5010 | static int sdebug_device_create_zones(struct sdebug_dev_info *devip) |
5011 | { | |
5012 | struct sdeb_zone_state *zsp; | |
5013 | sector_t capacity = get_sdebug_capacity(); | |
4a5fc1c6 | 5014 | sector_t conv_capacity; |
f0d1cf93 DG |
5015 | sector_t zstart = 0; |
5016 | unsigned int i; | |
5017 | ||
5018 | /* | |
98e0a689 DLM |
5019 | * Set the zone size: if sdeb_zbc_zone_size_mb is not set, figure out |
5020 | * a zone size allowing for at least 4 zones on the device. Otherwise, | |
f0d1cf93 DG |
5021 | * use the specified zone size checking that at least 2 zones can be |
5022 | * created for the device. | |
5023 | */ | |
98e0a689 | 5024 | if (!sdeb_zbc_zone_size_mb) { |
f0d1cf93 DG |
5025 | devip->zsize = (DEF_ZBC_ZONE_SIZE_MB * SZ_1M) |
5026 | >> ilog2(sdebug_sector_size); | |
5027 | while (capacity < devip->zsize << 2 && devip->zsize >= 2) | |
5028 | devip->zsize >>= 1; | |
5029 | if (devip->zsize < 2) { | |
5030 | pr_err("Device capacity too small\n"); | |
5031 | return -EINVAL; | |
5032 | } | |
5033 | } else { | |
108e36f0 DLM |
5034 | if (!is_power_of_2(sdeb_zbc_zone_size_mb)) { |
5035 | pr_err("Zone size is not a power of 2\n"); | |
5036 | return -EINVAL; | |
5037 | } | |
98e0a689 | 5038 | devip->zsize = (sdeb_zbc_zone_size_mb * SZ_1M) |
f0d1cf93 DG |
5039 | >> ilog2(sdebug_sector_size); |
5040 | if (devip->zsize >= capacity) { | |
5041 | pr_err("Zone size too large for device capacity\n"); | |
5042 | return -EINVAL; | |
5043 | } | |
5044 | } | |
5045 | ||
108e36f0 | 5046 | devip->zsize_shift = ilog2(devip->zsize); |
f0d1cf93 DG |
5047 | devip->nr_zones = (capacity + devip->zsize - 1) >> devip->zsize_shift; |
5048 | ||
4a5fc1c6 DLM |
5049 | if (sdeb_zbc_zone_cap_mb == 0) { |
5050 | devip->zcap = devip->zsize; | |
5051 | } else { | |
5052 | devip->zcap = (sdeb_zbc_zone_cap_mb * SZ_1M) >> | |
5053 | ilog2(sdebug_sector_size); | |
5054 | if (devip->zcap > devip->zsize) { | |
5055 | pr_err("Zone capacity too large\n"); | |
5056 | return -EINVAL; | |
5057 | } | |
5058 | } | |
5059 | ||
5060 | conv_capacity = (sector_t)sdeb_zbc_nr_conv << devip->zsize_shift; | |
5061 | if (conv_capacity >= capacity) { | |
aa8fecf9 DLM |
5062 | pr_err("Number of conventional zones too large\n"); |
5063 | return -EINVAL; | |
5064 | } | |
5065 | devip->nr_conv_zones = sdeb_zbc_nr_conv; | |
4a5fc1c6 DLM |
5066 | devip->nr_seq_zones = ALIGN(capacity - conv_capacity, devip->zsize) >> |
5067 | devip->zsize_shift; | |
5068 | devip->nr_zones = devip->nr_conv_zones + devip->nr_seq_zones; | |
5069 | ||
5070 | /* Add gap zones if zone capacity is smaller than the zone size */ | |
5071 | if (devip->zcap < devip->zsize) | |
5072 | devip->nr_zones += devip->nr_seq_zones; | |
aa8fecf9 | 5073 | |
64e14ece DLM |
5074 | if (devip->zmodel == BLK_ZONED_HM) { |
5075 | /* zbc_max_open_zones can be 0, meaning "not reported" */ | |
5076 | if (sdeb_zbc_max_open >= devip->nr_zones - 1) | |
5077 | devip->max_open = (devip->nr_zones - 1) / 2; | |
5078 | else | |
5079 | devip->max_open = sdeb_zbc_max_open; | |
5080 | } | |
f0d1cf93 DG |
5081 | |
5082 | devip->zstate = kcalloc(devip->nr_zones, | |
5083 | sizeof(struct sdeb_zone_state), GFP_KERNEL); | |
5084 | if (!devip->zstate) | |
5085 | return -ENOMEM; | |
5086 | ||
5087 | for (i = 0; i < devip->nr_zones; i++) { | |
5088 | zsp = &devip->zstate[i]; | |
5089 | ||
5090 | zsp->z_start = zstart; | |
5091 | ||
aa8fecf9 | 5092 | if (i < devip->nr_conv_zones) { |
35dbe2b9 | 5093 | zsp->z_type = ZBC_ZTYPE_CNV; |
f0d1cf93 DG |
5094 | zsp->z_cond = ZBC_NOT_WRITE_POINTER; |
5095 | zsp->z_wp = (sector_t)-1; | |
4a5fc1c6 DLM |
5096 | zsp->z_size = |
5097 | min_t(u64, devip->zsize, capacity - zstart); | |
5098 | } else if ((zstart & (devip->zsize - 1)) == 0) { | |
64e14ece | 5099 | if (devip->zmodel == BLK_ZONED_HM) |
35dbe2b9 | 5100 | zsp->z_type = ZBC_ZTYPE_SWR; |
64e14ece | 5101 | else |
35dbe2b9 | 5102 | zsp->z_type = ZBC_ZTYPE_SWP; |
f0d1cf93 DG |
5103 | zsp->z_cond = ZC1_EMPTY; |
5104 | zsp->z_wp = zsp->z_start; | |
4a5fc1c6 DLM |
5105 | zsp->z_size = |
5106 | min_t(u64, devip->zcap, capacity - zstart); | |
5107 | } else { | |
5108 | zsp->z_type = ZBC_ZTYPE_GAP; | |
5109 | zsp->z_cond = ZBC_NOT_WRITE_POINTER; | |
5110 | zsp->z_wp = (sector_t)-1; | |
5111 | zsp->z_size = min_t(u64, devip->zsize - devip->zcap, | |
5112 | capacity - zstart); | |
f0d1cf93 DG |
5113 | } |
5114 | ||
4a5fc1c6 | 5115 | WARN_ON_ONCE((int)zsp->z_size <= 0); |
f0d1cf93 DG |
5116 | zstart += zsp->z_size; |
5117 | } | |
5118 | ||
5119 | return 0; | |
5120 | } | |
5121 | ||
fd32119b DG |
5122 | static struct sdebug_dev_info *sdebug_device_create( |
5123 | struct sdebug_host_info *sdbg_host, gfp_t flags) | |
5cb2fc06 FT |
5124 | { |
5125 | struct sdebug_dev_info *devip; | |
5126 | ||
5127 | devip = kzalloc(sizeof(*devip), flags); | |
5128 | if (devip) { | |
09ba24c1 | 5129 | if (sdebug_uuid_ctl == 1) |
bf476433 | 5130 | uuid_gen(&devip->lu_name); |
09ba24c1 DG |
5131 | else if (sdebug_uuid_ctl == 2) { |
5132 | if (got_shared_uuid) | |
5133 | devip->lu_name = shared_uuid; | |
5134 | else { | |
bf476433 | 5135 | uuid_gen(&shared_uuid); |
09ba24c1 DG |
5136 | got_shared_uuid = true; |
5137 | devip->lu_name = shared_uuid; | |
5138 | } | |
5139 | } | |
5cb2fc06 | 5140 | devip->sdbg_host = sdbg_host; |
f0d1cf93 | 5141 | if (sdeb_zbc_in_use) { |
64e14ece | 5142 | devip->zmodel = sdeb_zbc_model; |
f0d1cf93 DG |
5143 | if (sdebug_device_create_zones(devip)) { |
5144 | kfree(devip); | |
5145 | return NULL; | |
5146 | } | |
64e14ece DLM |
5147 | } else { |
5148 | devip->zmodel = BLK_ZONED_NONE; | |
f0d1cf93 DG |
5149 | } |
5150 | devip->sdbg_host = sdbg_host; | |
fc13638a DG |
5151 | devip->create_ts = ktime_get_boottime(); |
5152 | atomic_set(&devip->stopped, (sdeb_tur_ms_to_ready > 0 ? 2 : 0)); | |
5cb2fc06 FT |
5153 | list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); |
5154 | } | |
5155 | return devip; | |
5156 | } | |
5157 | ||
f46eb0e9 | 5158 | static struct sdebug_dev_info *find_build_dev_info(struct scsi_device *sdev) |
1da177e4 | 5159 | { |
f46eb0e9 DG |
5160 | struct sdebug_host_info *sdbg_host; |
5161 | struct sdebug_dev_info *open_devip = NULL; | |
5162 | struct sdebug_dev_info *devip; | |
1da177e4 | 5163 | |
d1e4c9c5 FT |
5164 | sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
5165 | if (!sdbg_host) { | |
c1287970 | 5166 | pr_err("Host info NULL\n"); |
1da177e4 | 5167 | return NULL; |
9a051019 | 5168 | } |
ad0c7775 | 5169 | |
1da177e4 LT |
5170 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { |
5171 | if ((devip->used) && (devip->channel == sdev->channel) && | |
9a051019 DG |
5172 | (devip->target == sdev->id) && |
5173 | (devip->lun == sdev->lun)) | |
5174 | return devip; | |
1da177e4 LT |
5175 | else { |
5176 | if ((!devip->used) && (!open_devip)) | |
5177 | open_devip = devip; | |
5178 | } | |
5179 | } | |
5cb2fc06 FT |
5180 | if (!open_devip) { /* try and make a new one */ |
5181 | open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); | |
5182 | if (!open_devip) { | |
c1287970 | 5183 | pr_err("out of memory at line %d\n", __LINE__); |
1da177e4 LT |
5184 | return NULL; |
5185 | } | |
1da177e4 | 5186 | } |
a75869d1 FT |
5187 | |
5188 | open_devip->channel = sdev->channel; | |
5189 | open_devip->target = sdev->id; | |
5190 | open_devip->lun = sdev->lun; | |
5191 | open_devip->sdbg_host = sdbg_host; | |
cbf67842 | 5192 | atomic_set(&open_devip->num_in_q, 0); |
500d0d24 | 5193 | set_bit(SDEBUG_UA_POOCCUR, open_devip->uas_bm); |
c2248fc9 | 5194 | open_devip->used = true; |
a75869d1 | 5195 | return open_devip; |
1da177e4 LT |
5196 | } |
5197 | ||
8dea0d02 | 5198 | static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
1da177e4 | 5199 | { |
773642d9 | 5200 | if (sdebug_verbose) |
c1287970 | 5201 | pr_info("slave_alloc <%u %u %u %llu>\n", |
8dea0d02 | 5202 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
8dea0d02 FT |
5203 | return 0; |
5204 | } | |
1da177e4 | 5205 | |
8dea0d02 FT |
5206 | static int scsi_debug_slave_configure(struct scsi_device *sdp) |
5207 | { | |
f46eb0e9 DG |
5208 | struct sdebug_dev_info *devip = |
5209 | (struct sdebug_dev_info *)sdp->hostdata; | |
a34c4e98 | 5210 | |
773642d9 | 5211 | if (sdebug_verbose) |
c1287970 | 5212 | pr_info("slave_configure <%u %u %u %llu>\n", |
8dea0d02 | 5213 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
b01f6f83 DG |
5214 | if (sdp->host->max_cmd_len != SDEBUG_MAX_CMD_LEN) |
5215 | sdp->host->max_cmd_len = SDEBUG_MAX_CMD_LEN; | |
5216 | if (devip == NULL) { | |
f46eb0e9 | 5217 | devip = find_build_dev_info(sdp); |
b01f6f83 | 5218 | if (devip == NULL) |
f46eb0e9 DG |
5219 | return 1; /* no resources, will be marked offline */ |
5220 | } | |
c8b09f6f | 5221 | sdp->hostdata = devip; |
773642d9 | 5222 | if (sdebug_no_uld) |
78d4e5a0 | 5223 | sdp->no_uld_attach = 1; |
9b760fd8 | 5224 | config_cdb_len(sdp); |
8dea0d02 FT |
5225 | return 0; |
5226 | } | |
5227 | ||
5228 | static void scsi_debug_slave_destroy(struct scsi_device *sdp) | |
5229 | { | |
5230 | struct sdebug_dev_info *devip = | |
5231 | (struct sdebug_dev_info *)sdp->hostdata; | |
a34c4e98 | 5232 | |
773642d9 | 5233 | if (sdebug_verbose) |
c1287970 | 5234 | pr_info("slave_destroy <%u %u %u %llu>\n", |
8dea0d02 FT |
5235 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
5236 | if (devip) { | |
25985edc | 5237 | /* make this slot available for re-use */ |
c2248fc9 | 5238 | devip->used = false; |
8dea0d02 FT |
5239 | sdp->hostdata = NULL; |
5240 | } | |
5241 | } | |
5242 | ||
10bde980 DG |
5243 | static void stop_qc_helper(struct sdebug_defer *sd_dp, |
5244 | enum sdeb_defer_type defer_t) | |
c4837394 DG |
5245 | { |
5246 | if (!sd_dp) | |
5247 | return; | |
10bde980 | 5248 | if (defer_t == SDEB_DEFER_HRT) |
c4837394 | 5249 | hrtimer_cancel(&sd_dp->hrt); |
10bde980 | 5250 | else if (defer_t == SDEB_DEFER_WQ) |
c4837394 DG |
5251 | cancel_work_sync(&sd_dp->ew.work); |
5252 | } | |
5253 | ||
a10bc12a DG |
5254 | /* If @cmnd found deletes its timer or work queue and returns true; else |
5255 | returns false */ | |
5256 | static bool stop_queued_cmnd(struct scsi_cmnd *cmnd) | |
8dea0d02 FT |
5257 | { |
5258 | unsigned long iflags; | |
c4837394 | 5259 | int j, k, qmax, r_qmax; |
10bde980 | 5260 | enum sdeb_defer_type l_defer_t; |
c4837394 | 5261 | struct sdebug_queue *sqp; |
8dea0d02 | 5262 | struct sdebug_queued_cmd *sqcp; |
cbf67842 | 5263 | struct sdebug_dev_info *devip; |
a10bc12a | 5264 | struct sdebug_defer *sd_dp; |
8dea0d02 | 5265 | |
c4837394 DG |
5266 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) { |
5267 | spin_lock_irqsave(&sqp->qc_lock, iflags); | |
5268 | qmax = sdebug_max_queue; | |
5269 | r_qmax = atomic_read(&retired_max_queue); | |
5270 | if (r_qmax > qmax) | |
5271 | qmax = r_qmax; | |
5272 | for (k = 0; k < qmax; ++k) { | |
5273 | if (test_bit(k, sqp->in_use_bm)) { | |
5274 | sqcp = &sqp->qc_arr[k]; | |
5275 | if (cmnd != sqcp->a_cmnd) | |
5276 | continue; | |
5277 | /* found */ | |
5278 | devip = (struct sdebug_dev_info *) | |
5279 | cmnd->device->hostdata; | |
5280 | if (devip) | |
5281 | atomic_dec(&devip->num_in_q); | |
5282 | sqcp->a_cmnd = NULL; | |
5283 | sd_dp = sqcp->sd_dp; | |
10bde980 | 5284 | if (sd_dp) { |
d9d23a5a DG |
5285 | l_defer_t = READ_ONCE(sd_dp->defer_t); |
5286 | WRITE_ONCE(sd_dp->defer_t, SDEB_DEFER_NONE); | |
10bde980 DG |
5287 | } else |
5288 | l_defer_t = SDEB_DEFER_NONE; | |
c4837394 | 5289 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
10bde980 | 5290 | stop_qc_helper(sd_dp, l_defer_t); |
c4837394 DG |
5291 | clear_bit(k, sqp->in_use_bm); |
5292 | return true; | |
cbf67842 | 5293 | } |
8dea0d02 | 5294 | } |
c4837394 | 5295 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
8dea0d02 | 5296 | } |
a10bc12a | 5297 | return false; |
8dea0d02 FT |
5298 | } |
5299 | ||
a10bc12a | 5300 | /* Deletes (stops) timers or work queues of all queued commands */ |
f19fe8f3 | 5301 | static void stop_all_queued(void) |
8dea0d02 FT |
5302 | { |
5303 | unsigned long iflags; | |
c4837394 | 5304 | int j, k; |
10bde980 | 5305 | enum sdeb_defer_type l_defer_t; |
c4837394 | 5306 | struct sdebug_queue *sqp; |
8dea0d02 | 5307 | struct sdebug_queued_cmd *sqcp; |
cbf67842 | 5308 | struct sdebug_dev_info *devip; |
a10bc12a | 5309 | struct sdebug_defer *sd_dp; |
8dea0d02 | 5310 | |
c4837394 DG |
5311 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) { |
5312 | spin_lock_irqsave(&sqp->qc_lock, iflags); | |
5313 | for (k = 0; k < SDEBUG_CANQUEUE; ++k) { | |
5314 | if (test_bit(k, sqp->in_use_bm)) { | |
5315 | sqcp = &sqp->qc_arr[k]; | |
f19fe8f3 | 5316 | if (sqcp->a_cmnd == NULL) |
c4837394 DG |
5317 | continue; |
5318 | devip = (struct sdebug_dev_info *) | |
5319 | sqcp->a_cmnd->device->hostdata; | |
5320 | if (devip) | |
5321 | atomic_dec(&devip->num_in_q); | |
5322 | sqcp->a_cmnd = NULL; | |
5323 | sd_dp = sqcp->sd_dp; | |
10bde980 | 5324 | if (sd_dp) { |
d9d23a5a DG |
5325 | l_defer_t = READ_ONCE(sd_dp->defer_t); |
5326 | WRITE_ONCE(sd_dp->defer_t, SDEB_DEFER_NONE); | |
10bde980 DG |
5327 | } else |
5328 | l_defer_t = SDEB_DEFER_NONE; | |
c4837394 | 5329 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
10bde980 | 5330 | stop_qc_helper(sd_dp, l_defer_t); |
c4837394 DG |
5331 | clear_bit(k, sqp->in_use_bm); |
5332 | spin_lock_irqsave(&sqp->qc_lock, iflags); | |
cbf67842 | 5333 | } |
8dea0d02 | 5334 | } |
c4837394 | 5335 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
8dea0d02 | 5336 | } |
1da177e4 LT |
5337 | } |
5338 | ||
cbf67842 DG |
5339 | /* Free queued command memory on heap */ |
5340 | static void free_all_queued(void) | |
1da177e4 | 5341 | { |
c4837394 DG |
5342 | int j, k; |
5343 | struct sdebug_queue *sqp; | |
cbf67842 DG |
5344 | struct sdebug_queued_cmd *sqcp; |
5345 | ||
c4837394 DG |
5346 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) { |
5347 | for (k = 0; k < SDEBUG_CANQUEUE; ++k) { | |
5348 | sqcp = &sqp->qc_arr[k]; | |
5349 | kfree(sqcp->sd_dp); | |
5350 | sqcp->sd_dp = NULL; | |
5351 | } | |
cbf67842 | 5352 | } |
1da177e4 LT |
5353 | } |
5354 | ||
cbf67842 | 5355 | static int scsi_debug_abort(struct scsi_cmnd *SCpnt) |
1da177e4 | 5356 | { |
a10bc12a DG |
5357 | bool ok; |
5358 | ||
cbf67842 DG |
5359 | ++num_aborts; |
5360 | if (SCpnt) { | |
a10bc12a DG |
5361 | ok = stop_queued_cmnd(SCpnt); |
5362 | if (SCpnt->device && (SDEBUG_OPT_ALL_NOISE & sdebug_opts)) | |
5363 | sdev_printk(KERN_INFO, SCpnt->device, | |
5364 | "%s: command%s found\n", __func__, | |
5365 | ok ? "" : " not"); | |
cbf67842 DG |
5366 | } |
5367 | return SUCCESS; | |
1da177e4 LT |
5368 | } |
5369 | ||
91d4c752 | 5370 | static int scsi_debug_device_reset(struct scsi_cmnd *SCpnt) |
1da177e4 | 5371 | { |
1da177e4 | 5372 | ++num_dev_resets; |
cbf67842 DG |
5373 | if (SCpnt && SCpnt->device) { |
5374 | struct scsi_device *sdp = SCpnt->device; | |
f46eb0e9 DG |
5375 | struct sdebug_dev_info *devip = |
5376 | (struct sdebug_dev_info *)sdp->hostdata; | |
cbf67842 | 5377 | |
773642d9 | 5378 | if (SDEBUG_OPT_ALL_NOISE & sdebug_opts) |
cbf67842 | 5379 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); |
1da177e4 | 5380 | if (devip) |
cbf67842 DG |
5381 | set_bit(SDEBUG_UA_POR, devip->uas_bm); |
5382 | } | |
5383 | return SUCCESS; | |
5384 | } | |
5385 | ||
5386 | static int scsi_debug_target_reset(struct scsi_cmnd *SCpnt) | |
5387 | { | |
5388 | struct sdebug_host_info *sdbg_host; | |
5389 | struct sdebug_dev_info *devip; | |
5390 | struct scsi_device *sdp; | |
5391 | struct Scsi_Host *hp; | |
5392 | int k = 0; | |
5393 | ||
5394 | ++num_target_resets; | |
5395 | if (!SCpnt) | |
5396 | goto lie; | |
5397 | sdp = SCpnt->device; | |
5398 | if (!sdp) | |
5399 | goto lie; | |
773642d9 | 5400 | if (SDEBUG_OPT_ALL_NOISE & sdebug_opts) |
cbf67842 DG |
5401 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); |
5402 | hp = sdp->host; | |
5403 | if (!hp) | |
5404 | goto lie; | |
5405 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); | |
5406 | if (sdbg_host) { | |
5407 | list_for_each_entry(devip, | |
5408 | &sdbg_host->dev_info_list, | |
5409 | dev_list) | |
5410 | if (devip->target == sdp->id) { | |
5411 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
5412 | ++k; | |
5413 | } | |
1da177e4 | 5414 | } |
773642d9 | 5415 | if (SDEBUG_OPT_RESET_NOISE & sdebug_opts) |
cbf67842 DG |
5416 | sdev_printk(KERN_INFO, sdp, |
5417 | "%s: %d device(s) found in target\n", __func__, k); | |
5418 | lie: | |
1da177e4 LT |
5419 | return SUCCESS; |
5420 | } | |
5421 | ||
91d4c752 | 5422 | static int scsi_debug_bus_reset(struct scsi_cmnd *SCpnt) |
1da177e4 LT |
5423 | { |
5424 | struct sdebug_host_info *sdbg_host; | |
cbf67842 | 5425 | struct sdebug_dev_info *devip; |
9a051019 DG |
5426 | struct scsi_device *sdp; |
5427 | struct Scsi_Host *hp; | |
cbf67842 | 5428 | int k = 0; |
1da177e4 | 5429 | |
1da177e4 | 5430 | ++num_bus_resets; |
cbf67842 DG |
5431 | if (!(SCpnt && SCpnt->device)) |
5432 | goto lie; | |
5433 | sdp = SCpnt->device; | |
773642d9 | 5434 | if (SDEBUG_OPT_ALL_NOISE & sdebug_opts) |
cbf67842 DG |
5435 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); |
5436 | hp = sdp->host; | |
5437 | if (hp) { | |
d1e4c9c5 | 5438 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
1da177e4 | 5439 | if (sdbg_host) { |
cbf67842 | 5440 | list_for_each_entry(devip, |
9a051019 | 5441 | &sdbg_host->dev_info_list, |
cbf67842 DG |
5442 | dev_list) { |
5443 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
5444 | ++k; | |
5445 | } | |
1da177e4 LT |
5446 | } |
5447 | } | |
773642d9 | 5448 | if (SDEBUG_OPT_RESET_NOISE & sdebug_opts) |
cbf67842 DG |
5449 | sdev_printk(KERN_INFO, sdp, |
5450 | "%s: %d device(s) found in host\n", __func__, k); | |
5451 | lie: | |
1da177e4 LT |
5452 | return SUCCESS; |
5453 | } | |
5454 | ||
91d4c752 | 5455 | static int scsi_debug_host_reset(struct scsi_cmnd *SCpnt) |
1da177e4 | 5456 | { |
91d4c752 | 5457 | struct sdebug_host_info *sdbg_host; |
cbf67842 DG |
5458 | struct sdebug_dev_info *devip; |
5459 | int k = 0; | |
1da177e4 | 5460 | |
1da177e4 | 5461 | ++num_host_resets; |
773642d9 | 5462 | if ((SCpnt->device) && (SDEBUG_OPT_ALL_NOISE & sdebug_opts)) |
cbf67842 | 5463 | sdev_printk(KERN_INFO, SCpnt->device, "%s\n", __func__); |
9a051019 DG |
5464 | spin_lock(&sdebug_host_list_lock); |
5465 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
cbf67842 DG |
5466 | list_for_each_entry(devip, &sdbg_host->dev_info_list, |
5467 | dev_list) { | |
5468 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
5469 | ++k; | |
5470 | } | |
9a051019 DG |
5471 | } |
5472 | spin_unlock(&sdebug_host_list_lock); | |
f19fe8f3 | 5473 | stop_all_queued(); |
773642d9 | 5474 | if (SDEBUG_OPT_RESET_NOISE & sdebug_opts) |
cbf67842 DG |
5475 | sdev_printk(KERN_INFO, SCpnt->device, |
5476 | "%s: %d device(s) found\n", __func__, k); | |
1da177e4 LT |
5477 | return SUCCESS; |
5478 | } | |
5479 | ||
87c715dc | 5480 | static void sdebug_build_parts(unsigned char *ramp, unsigned long store_size) |
1da177e4 | 5481 | { |
1442f76d | 5482 | struct msdos_partition *pp; |
979e0dc3 | 5483 | int starts[SDEBUG_MAX_PARTS + 2], max_part_secs; |
1da177e4 LT |
5484 | int sectors_per_part, num_sectors, k; |
5485 | int heads_by_sects, start_sec, end_sec; | |
5486 | ||
5487 | /* assume partition table already zeroed */ | |
773642d9 | 5488 | if ((sdebug_num_parts < 1) || (store_size < 1048576)) |
1da177e4 | 5489 | return; |
773642d9 DG |
5490 | if (sdebug_num_parts > SDEBUG_MAX_PARTS) { |
5491 | sdebug_num_parts = SDEBUG_MAX_PARTS; | |
c1287970 | 5492 | pr_warn("reducing partitions to %d\n", SDEBUG_MAX_PARTS); |
1da177e4 | 5493 | } |
8c657235 | 5494 | num_sectors = (int)get_sdebug_capacity(); |
1da177e4 | 5495 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
773642d9 | 5496 | / sdebug_num_parts; |
1da177e4 | 5497 | heads_by_sects = sdebug_heads * sdebug_sectors_per; |
9a051019 | 5498 | starts[0] = sdebug_sectors_per; |
979e0dc3 JP |
5499 | max_part_secs = sectors_per_part; |
5500 | for (k = 1; k < sdebug_num_parts; ++k) { | |
1da177e4 LT |
5501 | starts[k] = ((k * sectors_per_part) / heads_by_sects) |
5502 | * heads_by_sects; | |
979e0dc3 JP |
5503 | if (starts[k] - starts[k - 1] < max_part_secs) |
5504 | max_part_secs = starts[k] - starts[k - 1]; | |
5505 | } | |
773642d9 DG |
5506 | starts[sdebug_num_parts] = num_sectors; |
5507 | starts[sdebug_num_parts + 1] = 0; | |
1da177e4 LT |
5508 | |
5509 | ramp[510] = 0x55; /* magic partition markings */ | |
5510 | ramp[511] = 0xAA; | |
1442f76d | 5511 | pp = (struct msdos_partition *)(ramp + 0x1be); |
1da177e4 LT |
5512 | for (k = 0; starts[k + 1]; ++k, ++pp) { |
5513 | start_sec = starts[k]; | |
979e0dc3 | 5514 | end_sec = starts[k] + max_part_secs - 1; |
1da177e4 LT |
5515 | pp->boot_ind = 0; |
5516 | ||
5517 | pp->cyl = start_sec / heads_by_sects; | |
5518 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) | |
5519 | / sdebug_sectors_per; | |
5520 | pp->sector = (start_sec % sdebug_sectors_per) + 1; | |
5521 | ||
5522 | pp->end_cyl = end_sec / heads_by_sects; | |
5523 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) | |
5524 | / sdebug_sectors_per; | |
5525 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; | |
5526 | ||
150c3544 AM |
5527 | pp->start_sect = cpu_to_le32(start_sec); |
5528 | pp->nr_sects = cpu_to_le32(end_sec - start_sec + 1); | |
1da177e4 LT |
5529 | pp->sys_ind = 0x83; /* plain Linux partition */ |
5530 | } | |
5531 | } | |
5532 | ||
f19fe8f3 | 5533 | static void block_unblock_all_queues(bool block) |
c4837394 DG |
5534 | { |
5535 | int j; | |
5536 | struct sdebug_queue *sqp; | |
5537 | ||
5538 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) | |
f19fe8f3 | 5539 | atomic_set(&sqp->blocked, (int)block); |
c4837394 DG |
5540 | } |
5541 | ||
5542 | /* Adjust (by rounding down) the sdebug_cmnd_count so abs(every_nth)-1 | |
5543 | * commands will be processed normally before triggers occur. | |
5544 | */ | |
5545 | static void tweak_cmnd_count(void) | |
5546 | { | |
5547 | int count, modulo; | |
5548 | ||
5549 | modulo = abs(sdebug_every_nth); | |
5550 | if (modulo < 2) | |
5551 | return; | |
f19fe8f3 | 5552 | block_unblock_all_queues(true); |
c4837394 DG |
5553 | count = atomic_read(&sdebug_cmnd_count); |
5554 | atomic_set(&sdebug_cmnd_count, (count / modulo) * modulo); | |
f19fe8f3 | 5555 | block_unblock_all_queues(false); |
c4837394 DG |
5556 | } |
5557 | ||
5558 | static void clear_queue_stats(void) | |
5559 | { | |
5560 | atomic_set(&sdebug_cmnd_count, 0); | |
5561 | atomic_set(&sdebug_completions, 0); | |
5562 | atomic_set(&sdebug_miss_cpus, 0); | |
5563 | atomic_set(&sdebug_a_tsf, 0); | |
5564 | } | |
5565 | ||
3a90a63d | 5566 | static bool inject_on_this_cmd(void) |
c4837394 | 5567 | { |
3a90a63d DG |
5568 | if (sdebug_every_nth == 0) |
5569 | return false; | |
5570 | return (atomic_read(&sdebug_cmnd_count) % abs(sdebug_every_nth)) == 0; | |
c4837394 DG |
5571 | } |
5572 | ||
a2aede97 DG |
5573 | #define INCLUSIVE_TIMING_MAX_NS 1000000 /* 1 millisecond */ |
5574 | ||
c4837394 DG |
5575 | /* Complete the processing of the thread that queued a SCSI command to this |
5576 | * driver. It either completes the command by calling cmnd_done() or | |
5577 | * schedules a hr timer or work queue then returns 0. Returns | |
5578 | * SCSI_MLQUEUE_HOST_BUSY if temporarily out of resources. | |
5579 | */ | |
fd32119b | 5580 | static int schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip, |
f66b8517 | 5581 | int scsi_result, |
f19fe8f3 BVA |
5582 | int (*pfp)(struct scsi_cmnd *, |
5583 | struct sdebug_dev_info *), | |
f66b8517 | 5584 | int delta_jiff, int ndelay) |
1da177e4 | 5585 | { |
a2aede97 | 5586 | bool new_sd_dp; |
3a90a63d | 5587 | bool inject = false; |
6ce913fe | 5588 | bool polled = scsi_cmd_to_rq(cmnd)->cmd_flags & REQ_POLLED; |
3a90a63d | 5589 | int k, num_in_q, qdepth; |
a2aede97 DG |
5590 | unsigned long iflags; |
5591 | u64 ns_from_boot = 0; | |
c4837394 DG |
5592 | struct sdebug_queue *sqp; |
5593 | struct sdebug_queued_cmd *sqcp; | |
299b6c07 | 5594 | struct scsi_device *sdp; |
a10bc12a | 5595 | struct sdebug_defer *sd_dp; |
299b6c07 | 5596 | |
b01f6f83 DG |
5597 | if (unlikely(devip == NULL)) { |
5598 | if (scsi_result == 0) | |
f46eb0e9 DG |
5599 | scsi_result = DID_NO_CONNECT << 16; |
5600 | goto respond_in_thread; | |
cbf67842 | 5601 | } |
299b6c07 TW |
5602 | sdp = cmnd->device; |
5603 | ||
f19fe8f3 | 5604 | if (delta_jiff == 0) |
cd62b7da | 5605 | goto respond_in_thread; |
1da177e4 | 5606 | |
c4837394 DG |
5607 | sqp = get_queue(cmnd); |
5608 | spin_lock_irqsave(&sqp->qc_lock, iflags); | |
5609 | if (unlikely(atomic_read(&sqp->blocked))) { | |
5610 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); | |
5611 | return SCSI_MLQUEUE_HOST_BUSY; | |
5612 | } | |
cbf67842 DG |
5613 | num_in_q = atomic_read(&devip->num_in_q); |
5614 | qdepth = cmnd->device->queue_depth; | |
f46eb0e9 | 5615 | if (unlikely((qdepth > 0) && (num_in_q >= qdepth))) { |
cd62b7da | 5616 | if (scsi_result) { |
c4837394 | 5617 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
cd62b7da DG |
5618 | goto respond_in_thread; |
5619 | } else | |
5620 | scsi_result = device_qfull_result; | |
c4837394 | 5621 | } else if (unlikely(sdebug_every_nth && |
f46eb0e9 DG |
5622 | (SDEBUG_OPT_RARE_TSF & sdebug_opts) && |
5623 | (scsi_result == 0))) { | |
cbf67842 DG |
5624 | if ((num_in_q == (qdepth - 1)) && |
5625 | (atomic_inc_return(&sdebug_a_tsf) >= | |
773642d9 | 5626 | abs(sdebug_every_nth))) { |
cbf67842 | 5627 | atomic_set(&sdebug_a_tsf, 0); |
3a90a63d | 5628 | inject = true; |
cd62b7da | 5629 | scsi_result = device_qfull_result; |
1da177e4 LT |
5630 | } |
5631 | } | |
1da177e4 | 5632 | |
c4837394 | 5633 | k = find_first_zero_bit(sqp->in_use_bm, sdebug_max_queue); |
f46eb0e9 | 5634 | if (unlikely(k >= sdebug_max_queue)) { |
c4837394 | 5635 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
cd62b7da DG |
5636 | if (scsi_result) |
5637 | goto respond_in_thread; | |
7d5a129b | 5638 | scsi_result = device_qfull_result; |
773642d9 | 5639 | if (SDEBUG_OPT_Q_NOISE & sdebug_opts) |
7d5a129b DG |
5640 | sdev_printk(KERN_INFO, sdp, "%s: max_queue=%d exceeded: TASK SET FULL\n", |
5641 | __func__, sdebug_max_queue); | |
5642 | goto respond_in_thread; | |
cbf67842 | 5643 | } |
74595c04 | 5644 | set_bit(k, sqp->in_use_bm); |
cbf67842 | 5645 | atomic_inc(&devip->num_in_q); |
c4837394 | 5646 | sqcp = &sqp->qc_arr[k]; |
cbf67842 | 5647 | sqcp->a_cmnd = cmnd; |
c4837394 | 5648 | cmnd->host_scribble = (unsigned char *)sqcp; |
a10bc12a | 5649 | sd_dp = sqcp->sd_dp; |
c4837394 | 5650 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
c4b57d89 | 5651 | |
74595c04 | 5652 | if (!sd_dp) { |
10bde980 | 5653 | sd_dp = kzalloc(sizeof(*sd_dp), GFP_ATOMIC); |
74595c04 DG |
5654 | if (!sd_dp) { |
5655 | atomic_dec(&devip->num_in_q); | |
5656 | clear_bit(k, sqp->in_use_bm); | |
10bde980 | 5657 | return SCSI_MLQUEUE_HOST_BUSY; |
74595c04 | 5658 | } |
a2aede97 DG |
5659 | new_sd_dp = true; |
5660 | } else { | |
5661 | new_sd_dp = false; | |
10bde980 | 5662 | } |
f66b8517 | 5663 | |
c10fa55f JG |
5664 | /* Set the hostwide tag */ |
5665 | if (sdebug_host_max_queue) | |
5666 | sd_dp->hc_idx = get_tag(cmnd); | |
5667 | ||
6ce913fe | 5668 | if (polled) |
a2aede97 DG |
5669 | ns_from_boot = ktime_get_boottime_ns(); |
5670 | ||
5671 | /* one of the resp_*() response functions is called here */ | |
3a90a63d | 5672 | cmnd->result = pfp ? pfp(cmnd, devip) : 0; |
f66b8517 | 5673 | if (cmnd->result & SDEG_RES_IMMED_MASK) { |
f66b8517 MW |
5674 | cmnd->result &= ~SDEG_RES_IMMED_MASK; |
5675 | delta_jiff = ndelay = 0; | |
5676 | } | |
5677 | if (cmnd->result == 0 && scsi_result != 0) | |
5678 | cmnd->result = scsi_result; | |
3a90a63d DG |
5679 | if (cmnd->result == 0 && unlikely(sdebug_opts & SDEBUG_OPT_TRANSPORT_ERR)) { |
5680 | if (atomic_read(&sdeb_inject_pending)) { | |
5681 | mk_sense_buffer(cmnd, ABORTED_COMMAND, TRANSPORT_PROBLEM, ACK_NAK_TO); | |
5682 | atomic_set(&sdeb_inject_pending, 0); | |
5683 | cmnd->result = check_condition_result; | |
5684 | } | |
5685 | } | |
f66b8517 MW |
5686 | |
5687 | if (unlikely(sdebug_verbose && cmnd->result)) | |
5688 | sdev_printk(KERN_INFO, sdp, "%s: non-zero result=0x%x\n", | |
5689 | __func__, cmnd->result); | |
5690 | ||
10bde980 | 5691 | if (delta_jiff > 0 || ndelay > 0) { |
b333a819 | 5692 | ktime_t kt; |
cbf67842 | 5693 | |
b333a819 | 5694 | if (delta_jiff > 0) { |
0c4bc91d DG |
5695 | u64 ns = jiffies_to_nsecs(delta_jiff); |
5696 | ||
5697 | if (sdebug_random && ns < U32_MAX) { | |
5698 | ns = prandom_u32_max((u32)ns); | |
5699 | } else if (sdebug_random) { | |
5700 | ns >>= 12; /* scale to 4 usec precision */ | |
5701 | if (ns < U32_MAX) /* over 4 hours max */ | |
5702 | ns = prandom_u32_max((u32)ns); | |
5703 | ns <<= 12; | |
5704 | } | |
5705 | kt = ns_to_ktime(ns); | |
5706 | } else { /* ndelay has a 4.2 second max */ | |
5707 | kt = sdebug_random ? prandom_u32_max((u32)ndelay) : | |
5708 | (u32)ndelay; | |
a2aede97 DG |
5709 | if (ndelay < INCLUSIVE_TIMING_MAX_NS) { |
5710 | u64 d = ktime_get_boottime_ns() - ns_from_boot; | |
5711 | ||
5712 | if (kt <= d) { /* elapsed duration >= kt */ | |
223f91b4 | 5713 | spin_lock_irqsave(&sqp->qc_lock, iflags); |
a2aede97 DG |
5714 | sqcp->a_cmnd = NULL; |
5715 | atomic_dec(&devip->num_in_q); | |
5716 | clear_bit(k, sqp->in_use_bm); | |
223f91b4 | 5717 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
a2aede97 DG |
5718 | if (new_sd_dp) |
5719 | kfree(sd_dp); | |
5720 | /* call scsi_done() from this thread */ | |
6c2c7d6a | 5721 | scsi_done(cmnd); |
a2aede97 DG |
5722 | return 0; |
5723 | } | |
5724 | /* otherwise reduce kt by elapsed time */ | |
5725 | kt -= d; | |
5726 | } | |
0c4bc91d | 5727 | } |
6ce913fe | 5728 | if (polled) { |
771f712b | 5729 | sd_dp->cmpl_ts = ktime_add(ns_to_ktime(ns_from_boot), kt); |
4a0c6f43 DG |
5730 | spin_lock_irqsave(&sqp->qc_lock, iflags); |
5731 | if (!sd_dp->init_poll) { | |
5732 | sd_dp->init_poll = true; | |
5733 | sqcp->sd_dp = sd_dp; | |
5734 | sd_dp->sqa_idx = sqp - sdebug_q_arr; | |
5735 | sd_dp->qc_idx = k; | |
5736 | } | |
d9d23a5a | 5737 | WRITE_ONCE(sd_dp->defer_t, SDEB_DEFER_POLL); |
4a0c6f43 DG |
5738 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
5739 | } else { | |
5740 | if (!sd_dp->init_hrt) { | |
5741 | sd_dp->init_hrt = true; | |
5742 | sqcp->sd_dp = sd_dp; | |
5743 | hrtimer_init(&sd_dp->hrt, CLOCK_MONOTONIC, | |
5744 | HRTIMER_MODE_REL_PINNED); | |
5745 | sd_dp->hrt.function = sdebug_q_cmd_hrt_complete; | |
5746 | sd_dp->sqa_idx = sqp - sdebug_q_arr; | |
5747 | sd_dp->qc_idx = k; | |
5748 | } | |
d9d23a5a | 5749 | WRITE_ONCE(sd_dp->defer_t, SDEB_DEFER_HRT); |
4a0c6f43 DG |
5750 | /* schedule the invocation of scsi_done() for a later time */ |
5751 | hrtimer_start(&sd_dp->hrt, kt, HRTIMER_MODE_REL_PINNED); | |
1da177e4 | 5752 | } |
c4837394 DG |
5753 | if (sdebug_statistics) |
5754 | sd_dp->issuing_cpu = raw_smp_processor_id(); | |
c4837394 | 5755 | } else { /* jdelay < 0, use work queue */ |
3a90a63d DG |
5756 | if (unlikely((sdebug_opts & SDEBUG_OPT_CMD_ABORT) && |
5757 | atomic_read(&sdeb_inject_pending))) | |
7382f9d8 | 5758 | sd_dp->aborted = true; |
6ce913fe | 5759 | if (polled) { |
771f712b | 5760 | sd_dp->cmpl_ts = ns_to_ktime(ns_from_boot); |
4a0c6f43 DG |
5761 | spin_lock_irqsave(&sqp->qc_lock, iflags); |
5762 | if (!sd_dp->init_poll) { | |
5763 | sd_dp->init_poll = true; | |
5764 | sqcp->sd_dp = sd_dp; | |
5765 | sd_dp->sqa_idx = sqp - sdebug_q_arr; | |
5766 | sd_dp->qc_idx = k; | |
5767 | } | |
d9d23a5a | 5768 | WRITE_ONCE(sd_dp->defer_t, SDEB_DEFER_POLL); |
4a0c6f43 DG |
5769 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
5770 | } else { | |
5771 | if (!sd_dp->init_wq) { | |
5772 | sd_dp->init_wq = true; | |
5773 | sqcp->sd_dp = sd_dp; | |
5774 | sd_dp->sqa_idx = sqp - sdebug_q_arr; | |
5775 | sd_dp->qc_idx = k; | |
5776 | INIT_WORK(&sd_dp->ew.work, sdebug_q_cmd_wq_complete); | |
5777 | } | |
d9d23a5a | 5778 | WRITE_ONCE(sd_dp->defer_t, SDEB_DEFER_WQ); |
4a0c6f43 DG |
5779 | schedule_work(&sd_dp->ew.work); |
5780 | } | |
5781 | if (sdebug_statistics) | |
5782 | sd_dp->issuing_cpu = raw_smp_processor_id(); | |
5783 | if (unlikely(sd_dp->aborted)) { | |
a6e76e6f BVA |
5784 | sdev_printk(KERN_INFO, sdp, "abort request tag %d\n", |
5785 | scsi_cmd_to_rq(cmnd)->tag); | |
5786 | blk_abort_request(scsi_cmd_to_rq(cmnd)); | |
3a90a63d | 5787 | atomic_set(&sdeb_inject_pending, 0); |
4a0c6f43 | 5788 | sd_dp->aborted = false; |
7382f9d8 | 5789 | } |
1da177e4 | 5790 | } |
3a90a63d DG |
5791 | if (unlikely((SDEBUG_OPT_Q_NOISE & sdebug_opts) && scsi_result == device_qfull_result)) |
5792 | sdev_printk(KERN_INFO, sdp, "%s: num_in_q=%d +1, %s%s\n", __func__, | |
5793 | num_in_q, (inject ? "<inject> " : ""), "status: TASK SET FULL"); | |
cbf67842 | 5794 | return 0; |
cd62b7da DG |
5795 | |
5796 | respond_in_thread: /* call back to mid-layer using invocation thread */ | |
f66b8517 MW |
5797 | cmnd->result = pfp != NULL ? pfp(cmnd, devip) : 0; |
5798 | cmnd->result &= ~SDEG_RES_IMMED_MASK; | |
f19fe8f3 | 5799 | if (cmnd->result == 0 && scsi_result != 0) |
f66b8517 | 5800 | cmnd->result = scsi_result; |
6c2c7d6a | 5801 | scsi_done(cmnd); |
cd62b7da | 5802 | return 0; |
1da177e4 | 5803 | } |
cbf67842 | 5804 | |
23183910 DG |
5805 | /* Note: The following macros create attribute files in the |
5806 | /sys/module/scsi_debug/parameters directory. Unfortunately this | |
5807 | driver is unaware of a change and cannot trigger auxiliary actions | |
5808 | as it can when the corresponding attribute in the | |
5809 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. | |
5810 | */ | |
773642d9 DG |
5811 | module_param_named(add_host, sdebug_add_host, int, S_IRUGO | S_IWUSR); |
5812 | module_param_named(ato, sdebug_ato, int, S_IRUGO); | |
9b760fd8 | 5813 | module_param_named(cdb_len, sdebug_cdb_len, int, 0644); |
773642d9 | 5814 | module_param_named(clustering, sdebug_clustering, bool, S_IRUGO | S_IWUSR); |
c2206098 | 5815 | module_param_named(delay, sdebug_jdelay, int, S_IRUGO | S_IWUSR); |
773642d9 DG |
5816 | module_param_named(dev_size_mb, sdebug_dev_size_mb, int, S_IRUGO); |
5817 | module_param_named(dif, sdebug_dif, int, S_IRUGO); | |
5818 | module_param_named(dix, sdebug_dix, int, S_IRUGO); | |
5819 | module_param_named(dsense, sdebug_dsense, int, S_IRUGO | S_IWUSR); | |
5820 | module_param_named(every_nth, sdebug_every_nth, int, S_IRUGO | S_IWUSR); | |
5821 | module_param_named(fake_rw, sdebug_fake_rw, int, S_IRUGO | S_IWUSR); | |
5822 | module_param_named(guard, sdebug_guard, uint, S_IRUGO); | |
5823 | module_param_named(host_lock, sdebug_host_lock, bool, S_IRUGO | S_IWUSR); | |
c10fa55f | 5824 | module_param_named(host_max_queue, sdebug_host_max_queue, int, S_IRUGO); |
e5203cf0 | 5825 | module_param_string(inq_product, sdebug_inq_product_id, |
5d807076 | 5826 | sizeof(sdebug_inq_product_id), S_IRUGO | S_IWUSR); |
e5203cf0 | 5827 | module_param_string(inq_rev, sdebug_inq_product_rev, |
5d807076 DG |
5828 | sizeof(sdebug_inq_product_rev), S_IRUGO | S_IWUSR); |
5829 | module_param_string(inq_vendor, sdebug_inq_vendor_id, | |
5830 | sizeof(sdebug_inq_vendor_id), S_IRUGO | S_IWUSR); | |
5831 | module_param_named(lbprz, sdebug_lbprz, int, S_IRUGO); | |
773642d9 DG |
5832 | module_param_named(lbpu, sdebug_lbpu, int, S_IRUGO); |
5833 | module_param_named(lbpws, sdebug_lbpws, int, S_IRUGO); | |
5834 | module_param_named(lbpws10, sdebug_lbpws10, int, S_IRUGO); | |
773642d9 | 5835 | module_param_named(lowest_aligned, sdebug_lowest_aligned, int, S_IRUGO); |
ad0c7775 | 5836 | module_param_named(lun_format, sdebug_lun_am_i, int, S_IRUGO | S_IWUSR); |
773642d9 DG |
5837 | module_param_named(max_luns, sdebug_max_luns, int, S_IRUGO | S_IWUSR); |
5838 | module_param_named(max_queue, sdebug_max_queue, int, S_IRUGO | S_IWUSR); | |
5d807076 DG |
5839 | module_param_named(medium_error_count, sdebug_medium_error_count, int, |
5840 | S_IRUGO | S_IWUSR); | |
5841 | module_param_named(medium_error_start, sdebug_medium_error_start, int, | |
5842 | S_IRUGO | S_IWUSR); | |
773642d9 DG |
5843 | module_param_named(ndelay, sdebug_ndelay, int, S_IRUGO | S_IWUSR); |
5844 | module_param_named(no_lun_0, sdebug_no_lun_0, int, S_IRUGO | S_IWUSR); | |
7109f370 | 5845 | module_param_named(no_rwlock, sdebug_no_rwlock, bool, S_IRUGO | S_IWUSR); |
773642d9 DG |
5846 | module_param_named(no_uld, sdebug_no_uld, int, S_IRUGO); |
5847 | module_param_named(num_parts, sdebug_num_parts, int, S_IRUGO); | |
5848 | module_param_named(num_tgts, sdebug_num_tgts, int, S_IRUGO | S_IWUSR); | |
5849 | module_param_named(opt_blks, sdebug_opt_blks, int, S_IRUGO); | |
5d807076 | 5850 | module_param_named(opt_xferlen_exp, sdebug_opt_xferlen_exp, int, S_IRUGO); |
773642d9 | 5851 | module_param_named(opts, sdebug_opts, int, S_IRUGO | S_IWUSR); |
87c715dc DG |
5852 | module_param_named(per_host_store, sdebug_per_host_store, bool, |
5853 | S_IRUGO | S_IWUSR); | |
773642d9 DG |
5854 | module_param_named(physblk_exp, sdebug_physblk_exp, int, S_IRUGO); |
5855 | module_param_named(ptype, sdebug_ptype, int, S_IRUGO | S_IWUSR); | |
0c4bc91d | 5856 | module_param_named(random, sdebug_random, bool, S_IRUGO | S_IWUSR); |
773642d9 DG |
5857 | module_param_named(removable, sdebug_removable, bool, S_IRUGO | S_IWUSR); |
5858 | module_param_named(scsi_level, sdebug_scsi_level, int, S_IRUGO); | |
5859 | module_param_named(sector_size, sdebug_sector_size, int, S_IRUGO); | |
c4837394 | 5860 | module_param_named(statistics, sdebug_statistics, bool, S_IRUGO | S_IWUSR); |
773642d9 | 5861 | module_param_named(strict, sdebug_strict, bool, S_IRUGO | S_IWUSR); |
c4837394 | 5862 | module_param_named(submit_queues, submit_queues, int, S_IRUGO); |
c4b57d89 | 5863 | module_param_named(poll_queues, poll_queues, int, S_IRUGO); |
fc13638a | 5864 | module_param_named(tur_ms_to_ready, sdeb_tur_ms_to_ready, int, S_IRUGO); |
773642d9 DG |
5865 | module_param_named(unmap_alignment, sdebug_unmap_alignment, int, S_IRUGO); |
5866 | module_param_named(unmap_granularity, sdebug_unmap_granularity, int, S_IRUGO); | |
5867 | module_param_named(unmap_max_blocks, sdebug_unmap_max_blocks, int, S_IRUGO); | |
5868 | module_param_named(unmap_max_desc, sdebug_unmap_max_desc, int, S_IRUGO); | |
09ba24c1 | 5869 | module_param_named(uuid_ctl, sdebug_uuid_ctl, int, S_IRUGO); |
5d807076 | 5870 | module_param_named(virtual_gb, sdebug_virtual_gb, int, S_IRUGO | S_IWUSR); |
773642d9 | 5871 | module_param_named(vpd_use_hostno, sdebug_vpd_use_hostno, int, |
5b94e232 | 5872 | S_IRUGO | S_IWUSR); |
9447b6ce | 5873 | module_param_named(wp, sdebug_wp, bool, S_IRUGO | S_IWUSR); |
773642d9 | 5874 | module_param_named(write_same_length, sdebug_write_same_length, int, |
5b94e232 | 5875 | S_IRUGO | S_IWUSR); |
9267e0eb | 5876 | module_param_named(zbc, sdeb_zbc_model_s, charp, S_IRUGO); |
4a5fc1c6 | 5877 | module_param_named(zone_cap_mb, sdeb_zbc_zone_cap_mb, int, S_IRUGO); |
380603a5 | 5878 | module_param_named(zone_max_open, sdeb_zbc_max_open, int, S_IRUGO); |
aa8fecf9 | 5879 | module_param_named(zone_nr_conv, sdeb_zbc_nr_conv, int, S_IRUGO); |
98e0a689 | 5880 | module_param_named(zone_size_mb, sdeb_zbc_zone_size_mb, int, S_IRUGO); |
1da177e4 LT |
5881 | |
5882 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); | |
5883 | MODULE_DESCRIPTION("SCSI debug adapter driver"); | |
5884 | MODULE_LICENSE("GPL"); | |
b01f6f83 | 5885 | MODULE_VERSION(SDEBUG_VERSION); |
1da177e4 | 5886 | |
5d807076 | 5887 | MODULE_PARM_DESC(add_host, "add n hosts, in sysfs if negative remove host(s) (def=1)"); |
5b94e232 | 5888 | MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)"); |
9b760fd8 | 5889 | MODULE_PARM_DESC(cdb_len, "suggest CDB lengths to drivers (def=10)"); |
0759c666 | 5890 | MODULE_PARM_DESC(clustering, "when set enables larger transfers (def=0)"); |
cbf67842 | 5891 | MODULE_PARM_DESC(delay, "response delay (def=1 jiffy); 0:imm, -1,-2:tiny"); |
c2248fc9 | 5892 | MODULE_PARM_DESC(dev_size_mb, "size in MiB of ram shared by devs(def=8)"); |
5b94e232 MP |
5893 | MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); |
5894 | MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); | |
c65b1445 | 5895 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); |
beb87c33 | 5896 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
23183910 | 5897 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
5b94e232 | 5898 | MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)"); |
185dd232 | 5899 | MODULE_PARM_DESC(host_lock, "host_lock is ignored (def=0)"); |
c10fa55f JG |
5900 | MODULE_PARM_DESC(host_max_queue, |
5901 | "host max # of queued cmds (0 to max(def) [max_queue fixed equal for !0])"); | |
e5203cf0 | 5902 | MODULE_PARM_DESC(inq_product, "SCSI INQUIRY product string (def=\"scsi_debug\")"); |
9b760fd8 DG |
5903 | MODULE_PARM_DESC(inq_rev, "SCSI INQUIRY revision string (def=\"" |
5904 | SDEBUG_VERSION "\")"); | |
5d807076 DG |
5905 | MODULE_PARM_DESC(inq_vendor, "SCSI INQUIRY vendor string (def=\"Linux\")"); |
5906 | MODULE_PARM_DESC(lbprz, | |
5907 | "on read unmapped LBs return 0 when 1 (def), return 0xff when 2"); | |
5b94e232 MP |
5908 | MODULE_PARM_DESC(lbpu, "enable LBP, support UNMAP command (def=0)"); |
5909 | MODULE_PARM_DESC(lbpws, "enable LBP, support WRITE SAME(16) with UNMAP bit (def=0)"); | |
5910 | MODULE_PARM_DESC(lbpws10, "enable LBP, support WRITE SAME(10) with UNMAP bit (def=0)"); | |
5911 | MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)"); | |
ad0c7775 | 5912 | MODULE_PARM_DESC(lun_format, "LUN format: 0->peripheral (def); 1 --> flat address method"); |
fc09acb7 | 5913 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
cbf67842 | 5914 | MODULE_PARM_DESC(max_queue, "max number of queued commands (1 to max(def))"); |
d9da891a | 5915 | MODULE_PARM_DESC(medium_error_count, "count of sectors to return follow on MEDIUM error"); |
5d807076 | 5916 | MODULE_PARM_DESC(medium_error_start, "starting sector number to return MEDIUM error"); |
cbf67842 | 5917 | MODULE_PARM_DESC(ndelay, "response delay in nanoseconds (def=0 -> ignore)"); |
c65b1445 | 5918 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); |
7109f370 | 5919 | MODULE_PARM_DESC(no_rwlock, "don't protect user data reads+writes (def=0)"); |
78d4e5a0 | 5920 | MODULE_PARM_DESC(no_uld, "stop ULD (e.g. sd driver) attaching (def=0))"); |
1da177e4 | 5921 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
c65b1445 | 5922 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
32c5844a | 5923 | MODULE_PARM_DESC(opt_blks, "optimal transfer length in blocks (def=1024)"); |
5d807076 | 5924 | MODULE_PARM_DESC(opt_xferlen_exp, "optimal transfer length granularity exponent (def=physblk_exp)"); |
6f3cbf55 | 5925 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
5d807076 | 5926 | MODULE_PARM_DESC(per_host_store, "If set, next positive add_host will get new store (def=0)"); |
5b94e232 | 5927 | MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)"); |
fc09acb7 | 5928 | MODULE_PARM_DESC(poll_queues, "support for iouring iopoll queues (1 to max(submit_queues - 1))"); |
1da177e4 | 5929 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
0c4bc91d | 5930 | MODULE_PARM_DESC(random, "If set, uniformly randomize command duration between 0 and delay_in_ns"); |
d986788b | 5931 | MODULE_PARM_DESC(removable, "claim to have removable media (def=0)"); |
760f3b03 | 5932 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=7[SPC-5])"); |
ea61fca5 | 5933 | MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)"); |
c4837394 | 5934 | MODULE_PARM_DESC(statistics, "collect statistics on commands, queues (def=0)"); |
c2248fc9 | 5935 | MODULE_PARM_DESC(strict, "stricter checks: reserved field in cdb (def=0)"); |
c4837394 | 5936 | MODULE_PARM_DESC(submit_queues, "support for block multi-queue (def=1)"); |
fc13638a | 5937 | MODULE_PARM_DESC(tur_ms_to_ready, "TEST UNIT READY millisecs before initial good status (def=0)"); |
5b94e232 MP |
5938 | MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)"); |
5939 | MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=1)"); | |
6014759c MP |
5940 | MODULE_PARM_DESC(unmap_max_blocks, "max # of blocks can be unmapped in one cmd (def=0xffffffff)"); |
5941 | MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=256)"); | |
09ba24c1 DG |
5942 | MODULE_PARM_DESC(uuid_ctl, |
5943 | "1->use uuid for lu name, 0->don't, 2->all use same (def=0)"); | |
c2248fc9 | 5944 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte (GiB) size (def=0 -> use dev_size_mb)"); |
5b94e232 | 5945 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
9447b6ce | 5946 | MODULE_PARM_DESC(wp, "Write Protect (def=0)"); |
5b94e232 | 5947 | MODULE_PARM_DESC(write_same_length, "Maximum blocks per WRITE SAME cmd (def=0xffff)"); |
9267e0eb | 5948 | MODULE_PARM_DESC(zbc, "'none' [0]; 'aware' [1]; 'managed' [2] (def=0). Can have 'host-' prefix"); |
4a5fc1c6 | 5949 | MODULE_PARM_DESC(zone_cap_mb, "Zone capacity in MiB (def=zone size)"); |
380603a5 | 5950 | MODULE_PARM_DESC(zone_max_open, "Maximum number of open zones; [0] for no limit (def=auto)"); |
aa8fecf9 | 5951 | MODULE_PARM_DESC(zone_nr_conv, "Number of conventional zones (def=1)"); |
98e0a689 | 5952 | MODULE_PARM_DESC(zone_size_mb, "Zone size in MiB (def=auto)"); |
1da177e4 | 5953 | |
760f3b03 DG |
5954 | #define SDEBUG_INFO_LEN 256 |
5955 | static char sdebug_info[SDEBUG_INFO_LEN]; | |
1da177e4 | 5956 | |
91d4c752 | 5957 | static const char *scsi_debug_info(struct Scsi_Host *shp) |
1da177e4 | 5958 | { |
c4837394 DG |
5959 | int k; |
5960 | ||
760f3b03 DG |
5961 | k = scnprintf(sdebug_info, SDEBUG_INFO_LEN, "%s: version %s [%s]\n", |
5962 | my_name, SDEBUG_VERSION, sdebug_version_date); | |
5963 | if (k >= (SDEBUG_INFO_LEN - 1)) | |
c4837394 | 5964 | return sdebug_info; |
760f3b03 DG |
5965 | scnprintf(sdebug_info + k, SDEBUG_INFO_LEN - k, |
5966 | " dev_size_mb=%d, opts=0x%x, submit_queues=%d, %s=%d", | |
5967 | sdebug_dev_size_mb, sdebug_opts, submit_queues, | |
5968 | "statistics", (int)sdebug_statistics); | |
1da177e4 LT |
5969 | return sdebug_info; |
5970 | } | |
5971 | ||
cbf67842 | 5972 | /* 'echo <val> > /proc/scsi/scsi_debug/<host_id>' writes to opts */ |
fd32119b DG |
5973 | static int scsi_debug_write_info(struct Scsi_Host *host, char *buffer, |
5974 | int length) | |
1da177e4 | 5975 | { |
c8ed555a AV |
5976 | char arr[16]; |
5977 | int opts; | |
5978 | int minLen = length > 15 ? 15 : length; | |
1da177e4 | 5979 | |
c8ed555a AV |
5980 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
5981 | return -EACCES; | |
5982 | memcpy(arr, buffer, minLen); | |
5983 | arr[minLen] = '\0'; | |
5984 | if (1 != sscanf(arr, "%d", &opts)) | |
5985 | return -EINVAL; | |
773642d9 DG |
5986 | sdebug_opts = opts; |
5987 | sdebug_verbose = !!(SDEBUG_OPT_NOISE & opts); | |
5988 | sdebug_any_injecting_opt = !!(SDEBUG_OPT_ALL_INJECTING & opts); | |
5989 | if (sdebug_every_nth != 0) | |
c4837394 | 5990 | tweak_cmnd_count(); |
c8ed555a AV |
5991 | return length; |
5992 | } | |
1da177e4 | 5993 | |
cbf67842 DG |
5994 | /* Output seen with 'cat /proc/scsi/scsi_debug/<host_id>'. It will be the |
5995 | * same for each scsi_debug host (if more than one). Some of the counters | |
5996 | * output are not atomics so might be inaccurate in a busy system. */ | |
c8ed555a AV |
5997 | static int scsi_debug_show_info(struct seq_file *m, struct Scsi_Host *host) |
5998 | { | |
c4837394 DG |
5999 | int f, j, l; |
6000 | struct sdebug_queue *sqp; | |
87c715dc | 6001 | struct sdebug_host_info *sdhp; |
c4837394 DG |
6002 | |
6003 | seq_printf(m, "scsi_debug adapter driver, version %s [%s]\n", | |
6004 | SDEBUG_VERSION, sdebug_version_date); | |
6005 | seq_printf(m, "num_tgts=%d, %ssize=%d MB, opts=0x%x, every_nth=%d\n", | |
6006 | sdebug_num_tgts, "shared (ram) ", sdebug_dev_size_mb, | |
6007 | sdebug_opts, sdebug_every_nth); | |
6008 | seq_printf(m, "delay=%d, ndelay=%d, max_luns=%d, sector_size=%d %s\n", | |
6009 | sdebug_jdelay, sdebug_ndelay, sdebug_max_luns, | |
6010 | sdebug_sector_size, "bytes"); | |
6011 | seq_printf(m, "cylinders=%d, heads=%d, sectors=%d, command aborts=%d\n", | |
6012 | sdebug_cylinders_per, sdebug_heads, sdebug_sectors_per, | |
6013 | num_aborts); | |
6014 | seq_printf(m, "RESETs: device=%d, target=%d, bus=%d, host=%d\n", | |
6015 | num_dev_resets, num_target_resets, num_bus_resets, | |
6016 | num_host_resets); | |
6017 | seq_printf(m, "dix_reads=%d, dix_writes=%d, dif_errors=%d\n", | |
6018 | dix_reads, dix_writes, dif_errors); | |
458df78b BVA |
6019 | seq_printf(m, "usec_in_jiffy=%lu, statistics=%d\n", TICK_NSEC / 1000, |
6020 | sdebug_statistics); | |
4a0c6f43 | 6021 | seq_printf(m, "cmnd_count=%d, completions=%d, %s=%d, a_tsf=%d, mq_polls=%d\n", |
c4837394 DG |
6022 | atomic_read(&sdebug_cmnd_count), |
6023 | atomic_read(&sdebug_completions), | |
6024 | "miss_cpus", atomic_read(&sdebug_miss_cpus), | |
4a0c6f43 DG |
6025 | atomic_read(&sdebug_a_tsf), |
6026 | atomic_read(&sdeb_mq_poll_count)); | |
c4837394 DG |
6027 | |
6028 | seq_printf(m, "submit_queues=%d\n", submit_queues); | |
6029 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) { | |
6030 | seq_printf(m, " queue %d:\n", j); | |
6031 | f = find_first_bit(sqp->in_use_bm, sdebug_max_queue); | |
6032 | if (f != sdebug_max_queue) { | |
6033 | l = find_last_bit(sqp->in_use_bm, sdebug_max_queue); | |
6034 | seq_printf(m, " in_use_bm BUSY: %s: %d,%d\n", | |
6035 | "first,last bits", f, l); | |
6036 | } | |
cbf67842 | 6037 | } |
87c715dc DG |
6038 | |
6039 | seq_printf(m, "this host_no=%d\n", host->host_no); | |
6040 | if (!xa_empty(per_store_ap)) { | |
6041 | bool niu; | |
6042 | int idx; | |
6043 | unsigned long l_idx; | |
6044 | struct sdeb_store_info *sip; | |
6045 | ||
6046 | seq_puts(m, "\nhost list:\n"); | |
6047 | j = 0; | |
6048 | list_for_each_entry(sdhp, &sdebug_host_list, host_list) { | |
6049 | idx = sdhp->si_idx; | |
6050 | seq_printf(m, " %d: host_no=%d, si_idx=%d\n", j, | |
6051 | sdhp->shost->host_no, idx); | |
6052 | ++j; | |
6053 | } | |
6054 | seq_printf(m, "\nper_store array [most_recent_idx=%d]:\n", | |
6055 | sdeb_most_recent_idx); | |
6056 | j = 0; | |
6057 | xa_for_each(per_store_ap, l_idx, sip) { | |
6058 | niu = xa_get_mark(per_store_ap, l_idx, | |
6059 | SDEB_XA_NOT_IN_USE); | |
6060 | idx = (int)l_idx; | |
6061 | seq_printf(m, " %d: idx=%d%s\n", j, idx, | |
6062 | (niu ? " not_in_use" : "")); | |
6063 | ++j; | |
6064 | } | |
6065 | } | |
c8ed555a | 6066 | return 0; |
1da177e4 LT |
6067 | } |
6068 | ||
82069379 | 6069 | static ssize_t delay_show(struct device_driver *ddp, char *buf) |
1da177e4 | 6070 | { |
c2206098 | 6071 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_jdelay); |
1da177e4 | 6072 | } |
c4837394 DG |
6073 | /* Returns -EBUSY if jdelay is being changed and commands are queued. The unit |
6074 | * of delay is jiffies. | |
6075 | */ | |
82069379 AM |
6076 | static ssize_t delay_store(struct device_driver *ddp, const char *buf, |
6077 | size_t count) | |
1da177e4 | 6078 | { |
c2206098 | 6079 | int jdelay, res; |
cbf67842 | 6080 | |
b01f6f83 | 6081 | if (count > 0 && sscanf(buf, "%d", &jdelay) == 1) { |
cbf67842 | 6082 | res = count; |
c2206098 | 6083 | if (sdebug_jdelay != jdelay) { |
c4837394 DG |
6084 | int j, k; |
6085 | struct sdebug_queue *sqp; | |
6086 | ||
f19fe8f3 | 6087 | block_unblock_all_queues(true); |
c4837394 DG |
6088 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; |
6089 | ++j, ++sqp) { | |
6090 | k = find_first_bit(sqp->in_use_bm, | |
6091 | sdebug_max_queue); | |
6092 | if (k != sdebug_max_queue) { | |
6093 | res = -EBUSY; /* queued commands */ | |
6094 | break; | |
6095 | } | |
6096 | } | |
6097 | if (res > 0) { | |
c2206098 | 6098 | sdebug_jdelay = jdelay; |
773642d9 | 6099 | sdebug_ndelay = 0; |
cbf67842 | 6100 | } |
f19fe8f3 | 6101 | block_unblock_all_queues(false); |
1da177e4 | 6102 | } |
cbf67842 | 6103 | return res; |
1da177e4 LT |
6104 | } |
6105 | return -EINVAL; | |
6106 | } | |
82069379 | 6107 | static DRIVER_ATTR_RW(delay); |
1da177e4 | 6108 | |
cbf67842 DG |
6109 | static ssize_t ndelay_show(struct device_driver *ddp, char *buf) |
6110 | { | |
773642d9 | 6111 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_ndelay); |
cbf67842 DG |
6112 | } |
6113 | /* Returns -EBUSY if ndelay is being changed and commands are queued */ | |
c2206098 | 6114 | /* If > 0 and accepted then sdebug_jdelay is set to JDELAY_OVERRIDDEN */ |
cbf67842 | 6115 | static ssize_t ndelay_store(struct device_driver *ddp, const char *buf, |
fd32119b | 6116 | size_t count) |
cbf67842 | 6117 | { |
c4837394 | 6118 | int ndelay, res; |
cbf67842 DG |
6119 | |
6120 | if ((count > 0) && (1 == sscanf(buf, "%d", &ndelay)) && | |
c4837394 | 6121 | (ndelay >= 0) && (ndelay < (1000 * 1000 * 1000))) { |
cbf67842 | 6122 | res = count; |
773642d9 | 6123 | if (sdebug_ndelay != ndelay) { |
c4837394 DG |
6124 | int j, k; |
6125 | struct sdebug_queue *sqp; | |
6126 | ||
f19fe8f3 | 6127 | block_unblock_all_queues(true); |
c4837394 DG |
6128 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; |
6129 | ++j, ++sqp) { | |
6130 | k = find_first_bit(sqp->in_use_bm, | |
6131 | sdebug_max_queue); | |
6132 | if (k != sdebug_max_queue) { | |
6133 | res = -EBUSY; /* queued commands */ | |
6134 | break; | |
6135 | } | |
6136 | } | |
6137 | if (res > 0) { | |
773642d9 | 6138 | sdebug_ndelay = ndelay; |
c2206098 DG |
6139 | sdebug_jdelay = ndelay ? JDELAY_OVERRIDDEN |
6140 | : DEF_JDELAY; | |
cbf67842 | 6141 | } |
f19fe8f3 | 6142 | block_unblock_all_queues(false); |
cbf67842 DG |
6143 | } |
6144 | return res; | |
6145 | } | |
6146 | return -EINVAL; | |
6147 | } | |
6148 | static DRIVER_ATTR_RW(ndelay); | |
6149 | ||
82069379 | 6150 | static ssize_t opts_show(struct device_driver *ddp, char *buf) |
1da177e4 | 6151 | { |
773642d9 | 6152 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", sdebug_opts); |
1da177e4 LT |
6153 | } |
6154 | ||
82069379 AM |
6155 | static ssize_t opts_store(struct device_driver *ddp, const char *buf, |
6156 | size_t count) | |
1da177e4 | 6157 | { |
9a051019 | 6158 | int opts; |
1da177e4 LT |
6159 | char work[20]; |
6160 | ||
9a051019 DG |
6161 | if (sscanf(buf, "%10s", work) == 1) { |
6162 | if (strncasecmp(work, "0x", 2) == 0) { | |
6163 | if (kstrtoint(work + 2, 16, &opts) == 0) | |
1da177e4 LT |
6164 | goto opts_done; |
6165 | } else { | |
9a051019 | 6166 | if (kstrtoint(work, 10, &opts) == 0) |
1da177e4 LT |
6167 | goto opts_done; |
6168 | } | |
6169 | } | |
6170 | return -EINVAL; | |
6171 | opts_done: | |
773642d9 DG |
6172 | sdebug_opts = opts; |
6173 | sdebug_verbose = !!(SDEBUG_OPT_NOISE & opts); | |
6174 | sdebug_any_injecting_opt = !!(SDEBUG_OPT_ALL_INJECTING & opts); | |
c4837394 | 6175 | tweak_cmnd_count(); |
1da177e4 LT |
6176 | return count; |
6177 | } | |
82069379 | 6178 | static DRIVER_ATTR_RW(opts); |
1da177e4 | 6179 | |
82069379 | 6180 | static ssize_t ptype_show(struct device_driver *ddp, char *buf) |
1da177e4 | 6181 | { |
773642d9 | 6182 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_ptype); |
1da177e4 | 6183 | } |
82069379 AM |
6184 | static ssize_t ptype_store(struct device_driver *ddp, const char *buf, |
6185 | size_t count) | |
1da177e4 | 6186 | { |
9a051019 | 6187 | int n; |
1da177e4 | 6188 | |
f0d1cf93 DG |
6189 | /* Cannot change from or to TYPE_ZBC with sysfs */ |
6190 | if (sdebug_ptype == TYPE_ZBC) | |
6191 | return -EINVAL; | |
6192 | ||
1da177e4 | 6193 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
f0d1cf93 DG |
6194 | if (n == TYPE_ZBC) |
6195 | return -EINVAL; | |
773642d9 | 6196 | sdebug_ptype = n; |
1da177e4 LT |
6197 | return count; |
6198 | } | |
6199 | return -EINVAL; | |
6200 | } | |
82069379 | 6201 | static DRIVER_ATTR_RW(ptype); |
1da177e4 | 6202 | |
82069379 | 6203 | static ssize_t dsense_show(struct device_driver *ddp, char *buf) |
1da177e4 | 6204 | { |
773642d9 | 6205 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_dsense); |
1da177e4 | 6206 | } |
82069379 AM |
6207 | static ssize_t dsense_store(struct device_driver *ddp, const char *buf, |
6208 | size_t count) | |
1da177e4 | 6209 | { |
9a051019 | 6210 | int n; |
1da177e4 LT |
6211 | |
6212 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 | 6213 | sdebug_dsense = n; |
1da177e4 LT |
6214 | return count; |
6215 | } | |
6216 | return -EINVAL; | |
6217 | } | |
82069379 | 6218 | static DRIVER_ATTR_RW(dsense); |
1da177e4 | 6219 | |
82069379 | 6220 | static ssize_t fake_rw_show(struct device_driver *ddp, char *buf) |
23183910 | 6221 | { |
773642d9 | 6222 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_fake_rw); |
23183910 | 6223 | } |
82069379 AM |
6224 | static ssize_t fake_rw_store(struct device_driver *ddp, const char *buf, |
6225 | size_t count) | |
23183910 | 6226 | { |
87c715dc | 6227 | int n, idx; |
23183910 DG |
6228 | |
6229 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
87c715dc DG |
6230 | bool want_store = (n == 0); |
6231 | struct sdebug_host_info *sdhp; | |
6232 | ||
cbf67842 | 6233 | n = (n > 0); |
773642d9 | 6234 | sdebug_fake_rw = (sdebug_fake_rw > 0); |
87c715dc DG |
6235 | if (sdebug_fake_rw == n) |
6236 | return count; /* not transitioning so do nothing */ | |
6237 | ||
6238 | if (want_store) { /* 1 --> 0 transition, set up store */ | |
6239 | if (sdeb_first_idx < 0) { | |
6240 | idx = sdebug_add_store(); | |
6241 | if (idx < 0) | |
6242 | return idx; | |
6243 | } else { | |
6244 | idx = sdeb_first_idx; | |
6245 | xa_clear_mark(per_store_ap, idx, | |
6246 | SDEB_XA_NOT_IN_USE); | |
6247 | } | |
6248 | /* make all hosts use same store */ | |
6249 | list_for_each_entry(sdhp, &sdebug_host_list, | |
6250 | host_list) { | |
6251 | if (sdhp->si_idx != idx) { | |
6252 | xa_set_mark(per_store_ap, sdhp->si_idx, | |
6253 | SDEB_XA_NOT_IN_USE); | |
6254 | sdhp->si_idx = idx; | |
cbf67842 | 6255 | } |
cbf67842 | 6256 | } |
87c715dc DG |
6257 | sdeb_most_recent_idx = idx; |
6258 | } else { /* 0 --> 1 transition is trigger for shrink */ | |
6259 | sdebug_erase_all_stores(true /* apart from first */); | |
cbf67842 | 6260 | } |
87c715dc | 6261 | sdebug_fake_rw = n; |
23183910 DG |
6262 | return count; |
6263 | } | |
6264 | return -EINVAL; | |
6265 | } | |
82069379 | 6266 | static DRIVER_ATTR_RW(fake_rw); |
23183910 | 6267 | |
82069379 | 6268 | static ssize_t no_lun_0_show(struct device_driver *ddp, char *buf) |
c65b1445 | 6269 | { |
773642d9 | 6270 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_no_lun_0); |
c65b1445 | 6271 | } |
82069379 AM |
6272 | static ssize_t no_lun_0_store(struct device_driver *ddp, const char *buf, |
6273 | size_t count) | |
c65b1445 | 6274 | { |
9a051019 | 6275 | int n; |
c65b1445 DG |
6276 | |
6277 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 | 6278 | sdebug_no_lun_0 = n; |
c65b1445 DG |
6279 | return count; |
6280 | } | |
6281 | return -EINVAL; | |
6282 | } | |
82069379 | 6283 | static DRIVER_ATTR_RW(no_lun_0); |
c65b1445 | 6284 | |
82069379 | 6285 | static ssize_t num_tgts_show(struct device_driver *ddp, char *buf) |
1da177e4 | 6286 | { |
773642d9 | 6287 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_num_tgts); |
1da177e4 | 6288 | } |
82069379 AM |
6289 | static ssize_t num_tgts_store(struct device_driver *ddp, const char *buf, |
6290 | size_t count) | |
1da177e4 | 6291 | { |
9a051019 | 6292 | int n; |
1da177e4 LT |
6293 | |
6294 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 | 6295 | sdebug_num_tgts = n; |
1da177e4 LT |
6296 | sdebug_max_tgts_luns(); |
6297 | return count; | |
6298 | } | |
6299 | return -EINVAL; | |
6300 | } | |
82069379 | 6301 | static DRIVER_ATTR_RW(num_tgts); |
1da177e4 | 6302 | |
82069379 | 6303 | static ssize_t dev_size_mb_show(struct device_driver *ddp, char *buf) |
1da177e4 | 6304 | { |
773642d9 | 6305 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_dev_size_mb); |
1da177e4 | 6306 | } |
82069379 | 6307 | static DRIVER_ATTR_RO(dev_size_mb); |
1da177e4 | 6308 | |
87c715dc DG |
6309 | static ssize_t per_host_store_show(struct device_driver *ddp, char *buf) |
6310 | { | |
6311 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_per_host_store); | |
6312 | } | |
6313 | ||
6314 | static ssize_t per_host_store_store(struct device_driver *ddp, const char *buf, | |
6315 | size_t count) | |
6316 | { | |
6317 | bool v; | |
6318 | ||
6319 | if (kstrtobool(buf, &v)) | |
6320 | return -EINVAL; | |
6321 | ||
6322 | sdebug_per_host_store = v; | |
6323 | return count; | |
6324 | } | |
6325 | static DRIVER_ATTR_RW(per_host_store); | |
6326 | ||
82069379 | 6327 | static ssize_t num_parts_show(struct device_driver *ddp, char *buf) |
1da177e4 | 6328 | { |
773642d9 | 6329 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_num_parts); |
1da177e4 | 6330 | } |
82069379 | 6331 | static DRIVER_ATTR_RO(num_parts); |
1da177e4 | 6332 | |
82069379 | 6333 | static ssize_t every_nth_show(struct device_driver *ddp, char *buf) |
1da177e4 | 6334 | { |
773642d9 | 6335 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_every_nth); |
1da177e4 | 6336 | } |
82069379 AM |
6337 | static ssize_t every_nth_store(struct device_driver *ddp, const char *buf, |
6338 | size_t count) | |
1da177e4 | 6339 | { |
9a051019 | 6340 | int nth; |
3a90a63d | 6341 | char work[20]; |
1da177e4 | 6342 | |
3a90a63d DG |
6343 | if (sscanf(buf, "%10s", work) == 1) { |
6344 | if (strncasecmp(work, "0x", 2) == 0) { | |
6345 | if (kstrtoint(work + 2, 16, &nth) == 0) | |
6346 | goto every_nth_done; | |
6347 | } else { | |
6348 | if (kstrtoint(work, 10, &nth) == 0) | |
6349 | goto every_nth_done; | |
c4837394 | 6350 | } |
1da177e4 LT |
6351 | } |
6352 | return -EINVAL; | |
3a90a63d DG |
6353 | |
6354 | every_nth_done: | |
6355 | sdebug_every_nth = nth; | |
6356 | if (nth && !sdebug_statistics) { | |
6357 | pr_info("every_nth needs statistics=1, set it\n"); | |
6358 | sdebug_statistics = true; | |
6359 | } | |
6360 | tweak_cmnd_count(); | |
6361 | return count; | |
1da177e4 | 6362 | } |
82069379 | 6363 | static DRIVER_ATTR_RW(every_nth); |
1da177e4 | 6364 | |
ad0c7775 DG |
6365 | static ssize_t lun_format_show(struct device_driver *ddp, char *buf) |
6366 | { | |
6367 | return scnprintf(buf, PAGE_SIZE, "%d\n", (int)sdebug_lun_am); | |
6368 | } | |
6369 | static ssize_t lun_format_store(struct device_driver *ddp, const char *buf, | |
6370 | size_t count) | |
6371 | { | |
6372 | int n; | |
6373 | bool changed; | |
6374 | ||
6375 | if (kstrtoint(buf, 0, &n)) | |
6376 | return -EINVAL; | |
6377 | if (n >= 0) { | |
6378 | if (n > (int)SAM_LUN_AM_FLAT) { | |
6379 | pr_warn("only LUN address methods 0 and 1 are supported\n"); | |
6380 | return -EINVAL; | |
6381 | } | |
6382 | changed = ((int)sdebug_lun_am != n); | |
6383 | sdebug_lun_am = n; | |
6384 | if (changed && sdebug_scsi_level >= 5) { /* >= SPC-3 */ | |
6385 | struct sdebug_host_info *sdhp; | |
6386 | struct sdebug_dev_info *dp; | |
6387 | ||
6388 | spin_lock(&sdebug_host_list_lock); | |
6389 | list_for_each_entry(sdhp, &sdebug_host_list, host_list) { | |
6390 | list_for_each_entry(dp, &sdhp->dev_info_list, dev_list) { | |
6391 | set_bit(SDEBUG_UA_LUNS_CHANGED, dp->uas_bm); | |
6392 | } | |
6393 | } | |
6394 | spin_unlock(&sdebug_host_list_lock); | |
6395 | } | |
6396 | return count; | |
6397 | } | |
6398 | return -EINVAL; | |
6399 | } | |
6400 | static DRIVER_ATTR_RW(lun_format); | |
6401 | ||
82069379 | 6402 | static ssize_t max_luns_show(struct device_driver *ddp, char *buf) |
1da177e4 | 6403 | { |
773642d9 | 6404 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_max_luns); |
1da177e4 | 6405 | } |
82069379 AM |
6406 | static ssize_t max_luns_store(struct device_driver *ddp, const char *buf, |
6407 | size_t count) | |
1da177e4 | 6408 | { |
9a051019 | 6409 | int n; |
19c8ead7 | 6410 | bool changed; |
1da177e4 LT |
6411 | |
6412 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
8d039e22 DG |
6413 | if (n > 256) { |
6414 | pr_warn("max_luns can be no more than 256\n"); | |
6415 | return -EINVAL; | |
6416 | } | |
773642d9 DG |
6417 | changed = (sdebug_max_luns != n); |
6418 | sdebug_max_luns = n; | |
1da177e4 | 6419 | sdebug_max_tgts_luns(); |
773642d9 | 6420 | if (changed && (sdebug_scsi_level >= 5)) { /* >= SPC-3 */ |
19c8ead7 EM |
6421 | struct sdebug_host_info *sdhp; |
6422 | struct sdebug_dev_info *dp; | |
6423 | ||
6424 | spin_lock(&sdebug_host_list_lock); | |
6425 | list_for_each_entry(sdhp, &sdebug_host_list, | |
6426 | host_list) { | |
6427 | list_for_each_entry(dp, &sdhp->dev_info_list, | |
6428 | dev_list) { | |
6429 | set_bit(SDEBUG_UA_LUNS_CHANGED, | |
6430 | dp->uas_bm); | |
6431 | } | |
6432 | } | |
6433 | spin_unlock(&sdebug_host_list_lock); | |
6434 | } | |
1da177e4 LT |
6435 | return count; |
6436 | } | |
6437 | return -EINVAL; | |
6438 | } | |
82069379 | 6439 | static DRIVER_ATTR_RW(max_luns); |
1da177e4 | 6440 | |
82069379 | 6441 | static ssize_t max_queue_show(struct device_driver *ddp, char *buf) |
78d4e5a0 | 6442 | { |
773642d9 | 6443 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_max_queue); |
78d4e5a0 | 6444 | } |
cbf67842 DG |
6445 | /* N.B. max_queue can be changed while there are queued commands. In flight |
6446 | * commands beyond the new max_queue will be completed. */ | |
82069379 AM |
6447 | static ssize_t max_queue_store(struct device_driver *ddp, const char *buf, |
6448 | size_t count) | |
78d4e5a0 | 6449 | { |
c4837394 DG |
6450 | int j, n, k, a; |
6451 | struct sdebug_queue *sqp; | |
78d4e5a0 DG |
6452 | |
6453 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n > 0) && | |
c10fa55f JG |
6454 | (n <= SDEBUG_CANQUEUE) && |
6455 | (sdebug_host_max_queue == 0)) { | |
f19fe8f3 | 6456 | block_unblock_all_queues(true); |
c4837394 DG |
6457 | k = 0; |
6458 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; | |
6459 | ++j, ++sqp) { | |
6460 | a = find_last_bit(sqp->in_use_bm, SDEBUG_CANQUEUE); | |
6461 | if (a > k) | |
6462 | k = a; | |
6463 | } | |
773642d9 | 6464 | sdebug_max_queue = n; |
c4837394 | 6465 | if (k == SDEBUG_CANQUEUE) |
cbf67842 DG |
6466 | atomic_set(&retired_max_queue, 0); |
6467 | else if (k >= n) | |
6468 | atomic_set(&retired_max_queue, k + 1); | |
6469 | else | |
6470 | atomic_set(&retired_max_queue, 0); | |
f19fe8f3 | 6471 | block_unblock_all_queues(false); |
78d4e5a0 DG |
6472 | return count; |
6473 | } | |
6474 | return -EINVAL; | |
6475 | } | |
82069379 | 6476 | static DRIVER_ATTR_RW(max_queue); |
78d4e5a0 | 6477 | |
c10fa55f JG |
6478 | static ssize_t host_max_queue_show(struct device_driver *ddp, char *buf) |
6479 | { | |
6480 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_host_max_queue); | |
6481 | } | |
6482 | ||
7109f370 DG |
6483 | static ssize_t no_rwlock_show(struct device_driver *ddp, char *buf) |
6484 | { | |
6485 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_no_rwlock); | |
6486 | } | |
6487 | ||
6488 | static ssize_t no_rwlock_store(struct device_driver *ddp, const char *buf, size_t count) | |
6489 | { | |
6490 | bool v; | |
6491 | ||
6492 | if (kstrtobool(buf, &v)) | |
6493 | return -EINVAL; | |
6494 | ||
6495 | sdebug_no_rwlock = v; | |
6496 | return count; | |
6497 | } | |
6498 | static DRIVER_ATTR_RW(no_rwlock); | |
6499 | ||
c10fa55f JG |
6500 | /* |
6501 | * Since this is used for .can_queue, and we get the hc_idx tag from the bitmap | |
6502 | * in range [0, sdebug_host_max_queue), we can't change it. | |
6503 | */ | |
6504 | static DRIVER_ATTR_RO(host_max_queue); | |
6505 | ||
82069379 | 6506 | static ssize_t no_uld_show(struct device_driver *ddp, char *buf) |
78d4e5a0 | 6507 | { |
773642d9 | 6508 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_no_uld); |
78d4e5a0 | 6509 | } |
82069379 | 6510 | static DRIVER_ATTR_RO(no_uld); |
78d4e5a0 | 6511 | |
82069379 | 6512 | static ssize_t scsi_level_show(struct device_driver *ddp, char *buf) |
1da177e4 | 6513 | { |
773642d9 | 6514 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_scsi_level); |
1da177e4 | 6515 | } |
82069379 | 6516 | static DRIVER_ATTR_RO(scsi_level); |
1da177e4 | 6517 | |
82069379 | 6518 | static ssize_t virtual_gb_show(struct device_driver *ddp, char *buf) |
c65b1445 | 6519 | { |
773642d9 | 6520 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_virtual_gb); |
c65b1445 | 6521 | } |
82069379 AM |
6522 | static ssize_t virtual_gb_store(struct device_driver *ddp, const char *buf, |
6523 | size_t count) | |
c65b1445 | 6524 | { |
9a051019 | 6525 | int n; |
0d01c5df | 6526 | bool changed; |
c65b1445 | 6527 | |
f0d1cf93 DG |
6528 | /* Ignore capacity change for ZBC drives for now */ |
6529 | if (sdeb_zbc_in_use) | |
6530 | return -ENOTSUPP; | |
6531 | ||
c65b1445 | 6532 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
773642d9 DG |
6533 | changed = (sdebug_virtual_gb != n); |
6534 | sdebug_virtual_gb = n; | |
28898873 | 6535 | sdebug_capacity = get_sdebug_capacity(); |
0d01c5df DG |
6536 | if (changed) { |
6537 | struct sdebug_host_info *sdhp; | |
6538 | struct sdebug_dev_info *dp; | |
6539 | ||
4bc6b634 | 6540 | spin_lock(&sdebug_host_list_lock); |
0d01c5df DG |
6541 | list_for_each_entry(sdhp, &sdebug_host_list, |
6542 | host_list) { | |
6543 | list_for_each_entry(dp, &sdhp->dev_info_list, | |
6544 | dev_list) { | |
6545 | set_bit(SDEBUG_UA_CAPACITY_CHANGED, | |
6546 | dp->uas_bm); | |
6547 | } | |
6548 | } | |
4bc6b634 | 6549 | spin_unlock(&sdebug_host_list_lock); |
0d01c5df | 6550 | } |
c65b1445 DG |
6551 | return count; |
6552 | } | |
6553 | return -EINVAL; | |
6554 | } | |
82069379 | 6555 | static DRIVER_ATTR_RW(virtual_gb); |
c65b1445 | 6556 | |
82069379 | 6557 | static ssize_t add_host_show(struct device_driver *ddp, char *buf) |
1da177e4 | 6558 | { |
87c715dc | 6559 | /* absolute number of hosts currently active is what is shown */ |
f19fe8f3 | 6560 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_num_hosts); |
1da177e4 LT |
6561 | } |
6562 | ||
82069379 AM |
6563 | static ssize_t add_host_store(struct device_driver *ddp, const char *buf, |
6564 | size_t count) | |
1da177e4 | 6565 | { |
f19fe8f3 BVA |
6566 | bool found; |
6567 | unsigned long idx; | |
6568 | struct sdeb_store_info *sip; | |
6569 | bool want_phs = (sdebug_fake_rw == 0) && sdebug_per_host_store; | |
f3df41cf | 6570 | int delta_hosts; |
1da177e4 | 6571 | |
f19fe8f3 | 6572 | if (sscanf(buf, "%d", &delta_hosts) != 1) |
1da177e4 | 6573 | return -EINVAL; |
1da177e4 | 6574 | if (delta_hosts > 0) { |
1da177e4 | 6575 | do { |
f19fe8f3 BVA |
6576 | found = false; |
6577 | if (want_phs) { | |
6578 | xa_for_each_marked(per_store_ap, idx, sip, | |
6579 | SDEB_XA_NOT_IN_USE) { | |
6580 | sdeb_most_recent_idx = (int)idx; | |
6581 | found = true; | |
6582 | break; | |
6583 | } | |
6584 | if (found) /* re-use case */ | |
6585 | sdebug_add_host_helper((int)idx); | |
6586 | else | |
6587 | sdebug_do_add_host(true); | |
6588 | } else { | |
6589 | sdebug_do_add_host(false); | |
2aad3cd8 | 6590 | } |
f19fe8f3 BVA |
6591 | } while (--delta_hosts); |
6592 | } else if (delta_hosts < 0) { | |
6593 | do { | |
87c715dc | 6594 | sdebug_do_remove_host(false); |
1da177e4 LT |
6595 | } while (++delta_hosts); |
6596 | } | |
6597 | return count; | |
6598 | } | |
82069379 | 6599 | static DRIVER_ATTR_RW(add_host); |
1da177e4 | 6600 | |
82069379 | 6601 | static ssize_t vpd_use_hostno_show(struct device_driver *ddp, char *buf) |
23183910 | 6602 | { |
773642d9 | 6603 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_vpd_use_hostno); |
23183910 | 6604 | } |
82069379 AM |
6605 | static ssize_t vpd_use_hostno_store(struct device_driver *ddp, const char *buf, |
6606 | size_t count) | |
23183910 DG |
6607 | { |
6608 | int n; | |
6609 | ||
6610 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 | 6611 | sdebug_vpd_use_hostno = n; |
23183910 DG |
6612 | return count; |
6613 | } | |
6614 | return -EINVAL; | |
6615 | } | |
82069379 | 6616 | static DRIVER_ATTR_RW(vpd_use_hostno); |
23183910 | 6617 | |
c4837394 DG |
6618 | static ssize_t statistics_show(struct device_driver *ddp, char *buf) |
6619 | { | |
6620 | return scnprintf(buf, PAGE_SIZE, "%d\n", (int)sdebug_statistics); | |
6621 | } | |
6622 | static ssize_t statistics_store(struct device_driver *ddp, const char *buf, | |
6623 | size_t count) | |
6624 | { | |
6625 | int n; | |
6626 | ||
6627 | if ((count > 0) && (sscanf(buf, "%d", &n) == 1) && (n >= 0)) { | |
6628 | if (n > 0) | |
6629 | sdebug_statistics = true; | |
6630 | else { | |
6631 | clear_queue_stats(); | |
6632 | sdebug_statistics = false; | |
6633 | } | |
6634 | return count; | |
6635 | } | |
6636 | return -EINVAL; | |
6637 | } | |
6638 | static DRIVER_ATTR_RW(statistics); | |
6639 | ||
82069379 | 6640 | static ssize_t sector_size_show(struct device_driver *ddp, char *buf) |
597136ab | 6641 | { |
773642d9 | 6642 | return scnprintf(buf, PAGE_SIZE, "%u\n", sdebug_sector_size); |
597136ab | 6643 | } |
82069379 | 6644 | static DRIVER_ATTR_RO(sector_size); |
597136ab | 6645 | |
c4837394 DG |
6646 | static ssize_t submit_queues_show(struct device_driver *ddp, char *buf) |
6647 | { | |
6648 | return scnprintf(buf, PAGE_SIZE, "%d\n", submit_queues); | |
6649 | } | |
6650 | static DRIVER_ATTR_RO(submit_queues); | |
6651 | ||
82069379 | 6652 | static ssize_t dix_show(struct device_driver *ddp, char *buf) |
c6a44287 | 6653 | { |
773642d9 | 6654 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_dix); |
c6a44287 | 6655 | } |
82069379 | 6656 | static DRIVER_ATTR_RO(dix); |
c6a44287 | 6657 | |
82069379 | 6658 | static ssize_t dif_show(struct device_driver *ddp, char *buf) |
c6a44287 | 6659 | { |
773642d9 | 6660 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_dif); |
c6a44287 | 6661 | } |
82069379 | 6662 | static DRIVER_ATTR_RO(dif); |
c6a44287 | 6663 | |
82069379 | 6664 | static ssize_t guard_show(struct device_driver *ddp, char *buf) |
c6a44287 | 6665 | { |
773642d9 | 6666 | return scnprintf(buf, PAGE_SIZE, "%u\n", sdebug_guard); |
c6a44287 | 6667 | } |
82069379 | 6668 | static DRIVER_ATTR_RO(guard); |
c6a44287 | 6669 | |
82069379 | 6670 | static ssize_t ato_show(struct device_driver *ddp, char *buf) |
c6a44287 | 6671 | { |
773642d9 | 6672 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_ato); |
c6a44287 | 6673 | } |
82069379 | 6674 | static DRIVER_ATTR_RO(ato); |
c6a44287 | 6675 | |
82069379 | 6676 | static ssize_t map_show(struct device_driver *ddp, char *buf) |
44d92694 | 6677 | { |
87c715dc | 6678 | ssize_t count = 0; |
44d92694 | 6679 | |
5b94e232 | 6680 | if (!scsi_debug_lbp()) |
44d92694 MP |
6681 | return scnprintf(buf, PAGE_SIZE, "0-%u\n", |
6682 | sdebug_store_sectors); | |
6683 | ||
87c715dc DG |
6684 | if (sdebug_fake_rw == 0 && !xa_empty(per_store_ap)) { |
6685 | struct sdeb_store_info *sip = xa_load(per_store_ap, 0); | |
6686 | ||
6687 | if (sip) | |
6688 | count = scnprintf(buf, PAGE_SIZE - 1, "%*pbl", | |
6689 | (int)map_size, sip->map_storep); | |
6690 | } | |
44d92694 | 6691 | buf[count++] = '\n'; |
c7badc90 | 6692 | buf[count] = '\0'; |
44d92694 MP |
6693 | |
6694 | return count; | |
6695 | } | |
82069379 | 6696 | static DRIVER_ATTR_RO(map); |
44d92694 | 6697 | |
0c4bc91d DG |
6698 | static ssize_t random_show(struct device_driver *ddp, char *buf) |
6699 | { | |
6700 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_random); | |
6701 | } | |
6702 | ||
6703 | static ssize_t random_store(struct device_driver *ddp, const char *buf, | |
6704 | size_t count) | |
6705 | { | |
6706 | bool v; | |
6707 | ||
6708 | if (kstrtobool(buf, &v)) | |
6709 | return -EINVAL; | |
6710 | ||
6711 | sdebug_random = v; | |
6712 | return count; | |
6713 | } | |
6714 | static DRIVER_ATTR_RW(random); | |
6715 | ||
82069379 | 6716 | static ssize_t removable_show(struct device_driver *ddp, char *buf) |
d986788b | 6717 | { |
773642d9 | 6718 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_removable ? 1 : 0); |
d986788b | 6719 | } |
82069379 AM |
6720 | static ssize_t removable_store(struct device_driver *ddp, const char *buf, |
6721 | size_t count) | |
d986788b MP |
6722 | { |
6723 | int n; | |
6724 | ||
6725 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 | 6726 | sdebug_removable = (n > 0); |
d986788b MP |
6727 | return count; |
6728 | } | |
6729 | return -EINVAL; | |
6730 | } | |
82069379 | 6731 | static DRIVER_ATTR_RW(removable); |
d986788b | 6732 | |
cbf67842 DG |
6733 | static ssize_t host_lock_show(struct device_driver *ddp, char *buf) |
6734 | { | |
773642d9 | 6735 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!sdebug_host_lock); |
cbf67842 | 6736 | } |
185dd232 | 6737 | /* N.B. sdebug_host_lock does nothing, kept for backward compatibility */ |
cbf67842 DG |
6738 | static ssize_t host_lock_store(struct device_driver *ddp, const char *buf, |
6739 | size_t count) | |
6740 | { | |
185dd232 | 6741 | int n; |
cbf67842 DG |
6742 | |
6743 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
185dd232 DG |
6744 | sdebug_host_lock = (n > 0); |
6745 | return count; | |
cbf67842 DG |
6746 | } |
6747 | return -EINVAL; | |
6748 | } | |
6749 | static DRIVER_ATTR_RW(host_lock); | |
6750 | ||
c2248fc9 DG |
6751 | static ssize_t strict_show(struct device_driver *ddp, char *buf) |
6752 | { | |
773642d9 | 6753 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!sdebug_strict); |
c2248fc9 DG |
6754 | } |
6755 | static ssize_t strict_store(struct device_driver *ddp, const char *buf, | |
6756 | size_t count) | |
6757 | { | |
6758 | int n; | |
6759 | ||
6760 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
773642d9 | 6761 | sdebug_strict = (n > 0); |
c2248fc9 DG |
6762 | return count; |
6763 | } | |
6764 | return -EINVAL; | |
6765 | } | |
6766 | static DRIVER_ATTR_RW(strict); | |
6767 | ||
09ba24c1 DG |
6768 | static ssize_t uuid_ctl_show(struct device_driver *ddp, char *buf) |
6769 | { | |
6770 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!sdebug_uuid_ctl); | |
6771 | } | |
6772 | static DRIVER_ATTR_RO(uuid_ctl); | |
6773 | ||
9b760fd8 DG |
6774 | static ssize_t cdb_len_show(struct device_driver *ddp, char *buf) |
6775 | { | |
6776 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_cdb_len); | |
6777 | } | |
6778 | static ssize_t cdb_len_store(struct device_driver *ddp, const char *buf, | |
6779 | size_t count) | |
6780 | { | |
6781 | int ret, n; | |
6782 | ||
6783 | ret = kstrtoint(buf, 0, &n); | |
6784 | if (ret) | |
6785 | return ret; | |
6786 | sdebug_cdb_len = n; | |
6787 | all_config_cdb_len(); | |
6788 | return count; | |
6789 | } | |
6790 | static DRIVER_ATTR_RW(cdb_len); | |
6791 | ||
9267e0eb DG |
6792 | static const char * const zbc_model_strs_a[] = { |
6793 | [BLK_ZONED_NONE] = "none", | |
6794 | [BLK_ZONED_HA] = "host-aware", | |
6795 | [BLK_ZONED_HM] = "host-managed", | |
6796 | }; | |
6797 | ||
6798 | static const char * const zbc_model_strs_b[] = { | |
6799 | [BLK_ZONED_NONE] = "no", | |
6800 | [BLK_ZONED_HA] = "aware", | |
6801 | [BLK_ZONED_HM] = "managed", | |
6802 | }; | |
6803 | ||
6804 | static const char * const zbc_model_strs_c[] = { | |
6805 | [BLK_ZONED_NONE] = "0", | |
6806 | [BLK_ZONED_HA] = "1", | |
6807 | [BLK_ZONED_HM] = "2", | |
6808 | }; | |
6809 | ||
6810 | static int sdeb_zbc_model_str(const char *cp) | |
6811 | { | |
6812 | int res = sysfs_match_string(zbc_model_strs_a, cp); | |
6813 | ||
6814 | if (res < 0) { | |
6815 | res = sysfs_match_string(zbc_model_strs_b, cp); | |
6816 | if (res < 0) { | |
6817 | res = sysfs_match_string(zbc_model_strs_c, cp); | |
47742bde | 6818 | if (res < 0) |
9267e0eb DG |
6819 | return -EINVAL; |
6820 | } | |
6821 | } | |
6822 | return res; | |
6823 | } | |
6824 | ||
6825 | static ssize_t zbc_show(struct device_driver *ddp, char *buf) | |
6826 | { | |
6827 | return scnprintf(buf, PAGE_SIZE, "%s\n", | |
6828 | zbc_model_strs_a[sdeb_zbc_model]); | |
6829 | } | |
6830 | static DRIVER_ATTR_RO(zbc); | |
cbf67842 | 6831 | |
fc13638a DG |
6832 | static ssize_t tur_ms_to_ready_show(struct device_driver *ddp, char *buf) |
6833 | { | |
6834 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdeb_tur_ms_to_ready); | |
6835 | } | |
6836 | static DRIVER_ATTR_RO(tur_ms_to_ready); | |
6837 | ||
82069379 | 6838 | /* Note: The following array creates attribute files in the |
23183910 DG |
6839 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these |
6840 | files (over those found in the /sys/module/scsi_debug/parameters | |
6841 | directory) is that auxiliary actions can be triggered when an attribute | |
87c715dc | 6842 | is changed. For example see: add_host_store() above. |
23183910 | 6843 | */ |
6ecaff7f | 6844 | |
82069379 AM |
6845 | static struct attribute *sdebug_drv_attrs[] = { |
6846 | &driver_attr_delay.attr, | |
6847 | &driver_attr_opts.attr, | |
6848 | &driver_attr_ptype.attr, | |
6849 | &driver_attr_dsense.attr, | |
6850 | &driver_attr_fake_rw.attr, | |
c10fa55f | 6851 | &driver_attr_host_max_queue.attr, |
82069379 AM |
6852 | &driver_attr_no_lun_0.attr, |
6853 | &driver_attr_num_tgts.attr, | |
6854 | &driver_attr_dev_size_mb.attr, | |
6855 | &driver_attr_num_parts.attr, | |
6856 | &driver_attr_every_nth.attr, | |
ad0c7775 | 6857 | &driver_attr_lun_format.attr, |
82069379 AM |
6858 | &driver_attr_max_luns.attr, |
6859 | &driver_attr_max_queue.attr, | |
7109f370 | 6860 | &driver_attr_no_rwlock.attr, |
82069379 AM |
6861 | &driver_attr_no_uld.attr, |
6862 | &driver_attr_scsi_level.attr, | |
6863 | &driver_attr_virtual_gb.attr, | |
6864 | &driver_attr_add_host.attr, | |
87c715dc | 6865 | &driver_attr_per_host_store.attr, |
82069379 AM |
6866 | &driver_attr_vpd_use_hostno.attr, |
6867 | &driver_attr_sector_size.attr, | |
c4837394 DG |
6868 | &driver_attr_statistics.attr, |
6869 | &driver_attr_submit_queues.attr, | |
82069379 AM |
6870 | &driver_attr_dix.attr, |
6871 | &driver_attr_dif.attr, | |
6872 | &driver_attr_guard.attr, | |
6873 | &driver_attr_ato.attr, | |
6874 | &driver_attr_map.attr, | |
0c4bc91d | 6875 | &driver_attr_random.attr, |
82069379 | 6876 | &driver_attr_removable.attr, |
cbf67842 DG |
6877 | &driver_attr_host_lock.attr, |
6878 | &driver_attr_ndelay.attr, | |
c2248fc9 | 6879 | &driver_attr_strict.attr, |
09ba24c1 | 6880 | &driver_attr_uuid_ctl.attr, |
9b760fd8 | 6881 | &driver_attr_cdb_len.attr, |
fc13638a | 6882 | &driver_attr_tur_ms_to_ready.attr, |
9267e0eb | 6883 | &driver_attr_zbc.attr, |
82069379 AM |
6884 | NULL, |
6885 | }; | |
6886 | ATTRIBUTE_GROUPS(sdebug_drv); | |
1da177e4 | 6887 | |
11ddceca | 6888 | static struct device *pseudo_primary; |
8dea0d02 | 6889 | |
1da177e4 LT |
6890 | static int __init scsi_debug_init(void) |
6891 | { | |
87c715dc | 6892 | bool want_store = (sdebug_fake_rw == 0); |
5f2578e5 | 6893 | unsigned long sz; |
87c715dc DG |
6894 | int k, ret, hosts_to_add; |
6895 | int idx = -1; | |
1da177e4 | 6896 | |
87c715dc DG |
6897 | ramdisk_lck_a[0] = &atomic_rw; |
6898 | ramdisk_lck_a[1] = &atomic_rw2; | |
cbf67842 DG |
6899 | atomic_set(&retired_max_queue, 0); |
6900 | ||
773642d9 | 6901 | if (sdebug_ndelay >= 1000 * 1000 * 1000) { |
c1287970 | 6902 | pr_warn("ndelay must be less than 1 second, ignored\n"); |
773642d9 DG |
6903 | sdebug_ndelay = 0; |
6904 | } else if (sdebug_ndelay > 0) | |
c2206098 | 6905 | sdebug_jdelay = JDELAY_OVERRIDDEN; |
cbf67842 | 6906 | |
773642d9 | 6907 | switch (sdebug_sector_size) { |
597136ab MP |
6908 | case 512: |
6909 | case 1024: | |
6910 | case 2048: | |
6911 | case 4096: | |
6912 | break; | |
6913 | default: | |
773642d9 | 6914 | pr_err("invalid sector_size %d\n", sdebug_sector_size); |
597136ab MP |
6915 | return -EINVAL; |
6916 | } | |
6917 | ||
773642d9 | 6918 | switch (sdebug_dif) { |
8475c811 | 6919 | case T10_PI_TYPE0_PROTECTION: |
f46eb0e9 | 6920 | break; |
8475c811 CH |
6921 | case T10_PI_TYPE1_PROTECTION: |
6922 | case T10_PI_TYPE2_PROTECTION: | |
6923 | case T10_PI_TYPE3_PROTECTION: | |
f46eb0e9 | 6924 | have_dif_prot = true; |
c6a44287 MP |
6925 | break; |
6926 | ||
6927 | default: | |
c1287970 | 6928 | pr_err("dif must be 0, 1, 2 or 3\n"); |
c6a44287 MP |
6929 | return -EINVAL; |
6930 | } | |
6931 | ||
aa5334c4 ML |
6932 | if (sdebug_num_tgts < 0) { |
6933 | pr_err("num_tgts must be >= 0\n"); | |
6934 | return -EINVAL; | |
6935 | } | |
6936 | ||
773642d9 | 6937 | if (sdebug_guard > 1) { |
c1287970 | 6938 | pr_err("guard must be 0 or 1\n"); |
c6a44287 MP |
6939 | return -EINVAL; |
6940 | } | |
6941 | ||
773642d9 | 6942 | if (sdebug_ato > 1) { |
c1287970 | 6943 | pr_err("ato must be 0 or 1\n"); |
c6a44287 MP |
6944 | return -EINVAL; |
6945 | } | |
6946 | ||
773642d9 DG |
6947 | if (sdebug_physblk_exp > 15) { |
6948 | pr_err("invalid physblk_exp %u\n", sdebug_physblk_exp); | |
ea61fca5 MP |
6949 | return -EINVAL; |
6950 | } | |
ad0c7775 DG |
6951 | |
6952 | sdebug_lun_am = sdebug_lun_am_i; | |
6953 | if (sdebug_lun_am > SAM_LUN_AM_FLAT) { | |
6954 | pr_warn("Invalid LUN format %u, using default\n", (int)sdebug_lun_am); | |
6955 | sdebug_lun_am = SAM_LUN_AM_PERIPHERAL; | |
6956 | } | |
6957 | ||
8d039e22 | 6958 | if (sdebug_max_luns > 256) { |
ad0c7775 DG |
6959 | if (sdebug_max_luns > 16384) { |
6960 | pr_warn("max_luns can be no more than 16384, use default\n"); | |
6961 | sdebug_max_luns = DEF_MAX_LUNS; | |
6962 | } | |
6963 | sdebug_lun_am = SAM_LUN_AM_FLAT; | |
8d039e22 | 6964 | } |
ea61fca5 | 6965 | |
773642d9 DG |
6966 | if (sdebug_lowest_aligned > 0x3fff) { |
6967 | pr_err("lowest_aligned too big: %u\n", sdebug_lowest_aligned); | |
ea61fca5 MP |
6968 | return -EINVAL; |
6969 | } | |
6970 | ||
c4837394 DG |
6971 | if (submit_queues < 1) { |
6972 | pr_err("submit_queues must be 1 or more\n"); | |
6973 | return -EINVAL; | |
6974 | } | |
c87bf24c JG |
6975 | |
6976 | if ((sdebug_max_queue > SDEBUG_CANQUEUE) || (sdebug_max_queue < 1)) { | |
6977 | pr_err("max_queue must be in range [1, %d]\n", SDEBUG_CANQUEUE); | |
6978 | return -EINVAL; | |
6979 | } | |
6980 | ||
c10fa55f JG |
6981 | if ((sdebug_host_max_queue > SDEBUG_CANQUEUE) || |
6982 | (sdebug_host_max_queue < 0)) { | |
6983 | pr_err("host_max_queue must be in range [0 %d]\n", | |
6984 | SDEBUG_CANQUEUE); | |
6985 | return -EINVAL; | |
6986 | } | |
6987 | ||
6988 | if (sdebug_host_max_queue && | |
6989 | (sdebug_max_queue != sdebug_host_max_queue)) { | |
6990 | sdebug_max_queue = sdebug_host_max_queue; | |
6991 | pr_warn("fixing max submit queue depth to host max queue depth, %d\n", | |
6992 | sdebug_max_queue); | |
6993 | } | |
6994 | ||
c4837394 DG |
6995 | sdebug_q_arr = kcalloc(submit_queues, sizeof(struct sdebug_queue), |
6996 | GFP_KERNEL); | |
6997 | if (sdebug_q_arr == NULL) | |
6998 | return -ENOMEM; | |
6999 | for (k = 0; k < submit_queues; ++k) | |
7000 | spin_lock_init(&sdebug_q_arr[k].qc_lock); | |
7001 | ||
f0d1cf93 | 7002 | /* |
9267e0eb DG |
7003 | * check for host managed zoned block device specified with |
7004 | * ptype=0x14 or zbc=XXX. | |
f0d1cf93 | 7005 | */ |
9267e0eb DG |
7006 | if (sdebug_ptype == TYPE_ZBC) { |
7007 | sdeb_zbc_model = BLK_ZONED_HM; | |
7008 | } else if (sdeb_zbc_model_s && *sdeb_zbc_model_s) { | |
7009 | k = sdeb_zbc_model_str(sdeb_zbc_model_s); | |
7010 | if (k < 0) { | |
7011 | ret = k; | |
3b01d7ea | 7012 | goto free_q_arr; |
9267e0eb DG |
7013 | } |
7014 | sdeb_zbc_model = k; | |
7015 | switch (sdeb_zbc_model) { | |
7016 | case BLK_ZONED_NONE: | |
64e14ece | 7017 | case BLK_ZONED_HA: |
9267e0eb DG |
7018 | sdebug_ptype = TYPE_DISK; |
7019 | break; | |
7020 | case BLK_ZONED_HM: | |
7021 | sdebug_ptype = TYPE_ZBC; | |
7022 | break; | |
9267e0eb DG |
7023 | default: |
7024 | pr_err("Invalid ZBC model\n"); | |
3b01d7ea DL |
7025 | ret = -EINVAL; |
7026 | goto free_q_arr; | |
9267e0eb DG |
7027 | } |
7028 | } | |
7029 | if (sdeb_zbc_model != BLK_ZONED_NONE) { | |
f0d1cf93 | 7030 | sdeb_zbc_in_use = true; |
9267e0eb DG |
7031 | if (sdebug_dev_size_mb == DEF_DEV_SIZE_PRE_INIT) |
7032 | sdebug_dev_size_mb = DEF_ZBC_DEV_SIZE_MB; | |
7033 | } | |
f0d1cf93 | 7034 | |
9267e0eb DG |
7035 | if (sdebug_dev_size_mb == DEF_DEV_SIZE_PRE_INIT) |
7036 | sdebug_dev_size_mb = DEF_DEV_SIZE_MB; | |
773642d9 DG |
7037 | if (sdebug_dev_size_mb < 1) |
7038 | sdebug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ | |
7039 | sz = (unsigned long)sdebug_dev_size_mb * 1048576; | |
7040 | sdebug_store_sectors = sz / sdebug_sector_size; | |
28898873 | 7041 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 LT |
7042 | |
7043 | /* play around with geometry, don't waste too much on track 0 */ | |
7044 | sdebug_heads = 8; | |
7045 | sdebug_sectors_per = 32; | |
773642d9 | 7046 | if (sdebug_dev_size_mb >= 256) |
1da177e4 | 7047 | sdebug_heads = 64; |
773642d9 | 7048 | else if (sdebug_dev_size_mb >= 16) |
fa785f0a | 7049 | sdebug_heads = 32; |
1da177e4 LT |
7050 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
7051 | (sdebug_sectors_per * sdebug_heads); | |
7052 | if (sdebug_cylinders_per >= 1024) { | |
7053 | /* other LLDs do this; implies >= 1GB ram disk ... */ | |
7054 | sdebug_heads = 255; | |
7055 | sdebug_sectors_per = 63; | |
7056 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
7057 | (sdebug_sectors_per * sdebug_heads); | |
7058 | } | |
5b94e232 | 7059 | if (scsi_debug_lbp()) { |
773642d9 DG |
7060 | sdebug_unmap_max_blocks = |
7061 | clamp(sdebug_unmap_max_blocks, 0U, 0xffffffffU); | |
6014759c | 7062 | |
773642d9 DG |
7063 | sdebug_unmap_max_desc = |
7064 | clamp(sdebug_unmap_max_desc, 0U, 256U); | |
6014759c | 7065 | |
773642d9 DG |
7066 | sdebug_unmap_granularity = |
7067 | clamp(sdebug_unmap_granularity, 1U, 0xffffffffU); | |
6014759c | 7068 | |
773642d9 DG |
7069 | if (sdebug_unmap_alignment && |
7070 | sdebug_unmap_granularity <= | |
7071 | sdebug_unmap_alignment) { | |
c1287970 | 7072 | pr_err("ERR: unmap_granularity <= unmap_alignment\n"); |
c4837394 | 7073 | ret = -EINVAL; |
87c715dc | 7074 | goto free_q_arr; |
44d92694 | 7075 | } |
87c715dc DG |
7076 | } |
7077 | xa_init_flags(per_store_ap, XA_FLAGS_ALLOC | XA_FLAGS_LOCK_IRQ); | |
7078 | if (want_store) { | |
7079 | idx = sdebug_add_store(); | |
7080 | if (idx < 0) { | |
7081 | ret = idx; | |
7082 | goto free_q_arr; | |
44d92694 | 7083 | } |
44d92694 MP |
7084 | } |
7085 | ||
9b906779 NB |
7086 | pseudo_primary = root_device_register("pseudo_0"); |
7087 | if (IS_ERR(pseudo_primary)) { | |
c1287970 | 7088 | pr_warn("root_device_register() error\n"); |
9b906779 | 7089 | ret = PTR_ERR(pseudo_primary); |
6ecaff7f RD |
7090 | goto free_vm; |
7091 | } | |
7092 | ret = bus_register(&pseudo_lld_bus); | |
7093 | if (ret < 0) { | |
c1287970 | 7094 | pr_warn("bus_register error: %d\n", ret); |
6ecaff7f RD |
7095 | goto dev_unreg; |
7096 | } | |
7097 | ret = driver_register(&sdebug_driverfs_driver); | |
7098 | if (ret < 0) { | |
c1287970 | 7099 | pr_warn("driver_register error: %d\n", ret); |
6ecaff7f RD |
7100 | goto bus_unreg; |
7101 | } | |
1da177e4 | 7102 | |
87c715dc | 7103 | hosts_to_add = sdebug_add_host; |
773642d9 | 7104 | sdebug_add_host = 0; |
1da177e4 | 7105 | |
87c715dc DG |
7106 | for (k = 0; k < hosts_to_add; k++) { |
7107 | if (want_store && k == 0) { | |
7108 | ret = sdebug_add_host_helper(idx); | |
7109 | if (ret < 0) { | |
7110 | pr_err("add_host_helper k=%d, error=%d\n", | |
7111 | k, -ret); | |
7112 | break; | |
7113 | } | |
7114 | } else { | |
7115 | ret = sdebug_do_add_host(want_store && | |
7116 | sdebug_per_host_store); | |
7117 | if (ret < 0) { | |
7118 | pr_err("add_host k=%d error=%d\n", k, -ret); | |
7119 | break; | |
7120 | } | |
9a051019 DG |
7121 | } |
7122 | } | |
773642d9 | 7123 | if (sdebug_verbose) |
f19fe8f3 | 7124 | pr_info("built %d host(s)\n", sdebug_num_hosts); |
c1287970 | 7125 | |
1da177e4 | 7126 | return 0; |
6ecaff7f | 7127 | |
6ecaff7f RD |
7128 | bus_unreg: |
7129 | bus_unregister(&pseudo_lld_bus); | |
7130 | dev_unreg: | |
9b906779 | 7131 | root_device_unregister(pseudo_primary); |
6ecaff7f | 7132 | free_vm: |
87c715dc | 7133 | sdebug_erase_store(idx, NULL); |
c4837394 DG |
7134 | free_q_arr: |
7135 | kfree(sdebug_q_arr); | |
6ecaff7f | 7136 | return ret; |
1da177e4 LT |
7137 | } |
7138 | ||
7139 | static void __exit scsi_debug_exit(void) | |
7140 | { | |
f19fe8f3 | 7141 | int k = sdebug_num_hosts; |
1da177e4 | 7142 | |
f19fe8f3 BVA |
7143 | stop_all_queued(); |
7144 | for (; k; k--) | |
87c715dc | 7145 | sdebug_do_remove_host(true); |
52ab9768 | 7146 | free_all_queued(); |
1da177e4 LT |
7147 | driver_unregister(&sdebug_driverfs_driver); |
7148 | bus_unregister(&pseudo_lld_bus); | |
9b906779 | 7149 | root_device_unregister(pseudo_primary); |
1da177e4 | 7150 | |
87c715dc DG |
7151 | sdebug_erase_all_stores(false); |
7152 | xa_destroy(per_store_ap); | |
f852c596 | 7153 | kfree(sdebug_q_arr); |
1da177e4 LT |
7154 | } |
7155 | ||
7156 | device_initcall(scsi_debug_init); | |
7157 | module_exit(scsi_debug_exit); | |
7158 | ||
91d4c752 | 7159 | static void sdebug_release_adapter(struct device *dev) |
1da177e4 | 7160 | { |
9a051019 | 7161 | struct sdebug_host_info *sdbg_host; |
1da177e4 LT |
7162 | |
7163 | sdbg_host = to_sdebug_host(dev); | |
9a051019 | 7164 | kfree(sdbg_host); |
1da177e4 LT |
7165 | } |
7166 | ||
87c715dc DG |
7167 | /* idx must be valid, if sip is NULL then it will be obtained using idx */ |
7168 | static void sdebug_erase_store(int idx, struct sdeb_store_info *sip) | |
1da177e4 | 7169 | { |
87c715dc DG |
7170 | if (idx < 0) |
7171 | return; | |
7172 | if (!sip) { | |
7173 | if (xa_empty(per_store_ap)) | |
7174 | return; | |
7175 | sip = xa_load(per_store_ap, idx); | |
7176 | if (!sip) | |
7177 | return; | |
7178 | } | |
7179 | vfree(sip->map_storep); | |
7180 | vfree(sip->dif_storep); | |
7181 | vfree(sip->storep); | |
7182 | xa_erase(per_store_ap, idx); | |
7183 | kfree(sip); | |
7184 | } | |
7185 | ||
7186 | /* Assume apart_from_first==false only in shutdown case. */ | |
7187 | static void sdebug_erase_all_stores(bool apart_from_first) | |
7188 | { | |
7189 | unsigned long idx; | |
7190 | struct sdeb_store_info *sip = NULL; | |
7191 | ||
7192 | xa_for_each(per_store_ap, idx, sip) { | |
7193 | if (apart_from_first) | |
7194 | apart_from_first = false; | |
7195 | else | |
7196 | sdebug_erase_store(idx, sip); | |
7197 | } | |
7198 | if (apart_from_first) | |
7199 | sdeb_most_recent_idx = sdeb_first_idx; | |
7200 | } | |
7201 | ||
7202 | /* | |
7203 | * Returns store xarray new element index (idx) if >=0 else negated errno. | |
7204 | * Limit the number of stores to 65536. | |
7205 | */ | |
7206 | static int sdebug_add_store(void) | |
7207 | { | |
7208 | int res; | |
7209 | u32 n_idx; | |
7210 | unsigned long iflags; | |
7211 | unsigned long sz = (unsigned long)sdebug_dev_size_mb * 1048576; | |
7212 | struct sdeb_store_info *sip = NULL; | |
7213 | struct xa_limit xal = { .max = 1 << 16, .min = 0 }; | |
7214 | ||
7215 | sip = kzalloc(sizeof(*sip), GFP_KERNEL); | |
7216 | if (!sip) | |
7217 | return -ENOMEM; | |
7218 | ||
7219 | xa_lock_irqsave(per_store_ap, iflags); | |
7220 | res = __xa_alloc(per_store_ap, &n_idx, sip, xal, GFP_ATOMIC); | |
7221 | if (unlikely(res < 0)) { | |
7222 | xa_unlock_irqrestore(per_store_ap, iflags); | |
7223 | kfree(sip); | |
7224 | pr_warn("%s: xa_alloc() errno=%d\n", __func__, -res); | |
7225 | return res; | |
7226 | } | |
7227 | sdeb_most_recent_idx = n_idx; | |
7228 | if (sdeb_first_idx < 0) | |
7229 | sdeb_first_idx = n_idx; | |
7230 | xa_unlock_irqrestore(per_store_ap, iflags); | |
7231 | ||
7232 | res = -ENOMEM; | |
7233 | sip->storep = vzalloc(sz); | |
7234 | if (!sip->storep) { | |
7235 | pr_err("user data oom\n"); | |
7236 | goto err; | |
7237 | } | |
7238 | if (sdebug_num_parts > 0) | |
7239 | sdebug_build_parts(sip->storep, sz); | |
7240 | ||
7241 | /* DIF/DIX: what T10 calls Protection Information (PI) */ | |
7242 | if (sdebug_dix) { | |
7243 | int dif_size; | |
7244 | ||
7245 | dif_size = sdebug_store_sectors * sizeof(struct t10_pi_tuple); | |
7246 | sip->dif_storep = vmalloc(dif_size); | |
7247 | ||
7248 | pr_info("dif_storep %u bytes @ %pK\n", dif_size, | |
7249 | sip->dif_storep); | |
7250 | ||
7251 | if (!sip->dif_storep) { | |
7252 | pr_err("DIX oom\n"); | |
7253 | goto err; | |
7254 | } | |
7255 | memset(sip->dif_storep, 0xff, dif_size); | |
7256 | } | |
7257 | /* Logical Block Provisioning */ | |
7258 | if (scsi_debug_lbp()) { | |
7259 | map_size = lba_to_map_index(sdebug_store_sectors - 1) + 1; | |
7260 | sip->map_storep = vmalloc(array_size(sizeof(long), | |
7261 | BITS_TO_LONGS(map_size))); | |
7262 | ||
7263 | pr_info("%lu provisioning blocks\n", map_size); | |
7264 | ||
7265 | if (!sip->map_storep) { | |
7266 | pr_err("LBP map oom\n"); | |
7267 | goto err; | |
7268 | } | |
7269 | ||
7270 | bitmap_zero(sip->map_storep, map_size); | |
7271 | ||
7272 | /* Map first 1KB for partition table */ | |
7273 | if (sdebug_num_parts) | |
7274 | map_region(sip, 0, 2); | |
7275 | } | |
7276 | ||
7277 | rwlock_init(&sip->macc_lck); | |
7278 | return (int)n_idx; | |
7279 | err: | |
7280 | sdebug_erase_store((int)n_idx, sip); | |
7281 | pr_warn("%s: failed, errno=%d\n", __func__, -res); | |
7282 | return res; | |
7283 | } | |
7284 | ||
7285 | static int sdebug_add_host_helper(int per_host_idx) | |
7286 | { | |
7287 | int k, devs_per_host, idx; | |
7288 | int error = -ENOMEM; | |
9a051019 | 7289 | struct sdebug_host_info *sdbg_host; |
8b40228f | 7290 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 | 7291 | |
9a051019 | 7292 | sdbg_host = kzalloc(sizeof(*sdbg_host), GFP_KERNEL); |
87c715dc | 7293 | if (!sdbg_host) |
9a051019 | 7294 | return -ENOMEM; |
87c715dc DG |
7295 | idx = (per_host_idx < 0) ? sdeb_first_idx : per_host_idx; |
7296 | if (xa_get_mark(per_store_ap, idx, SDEB_XA_NOT_IN_USE)) | |
7297 | xa_clear_mark(per_store_ap, idx, SDEB_XA_NOT_IN_USE); | |
7298 | sdbg_host->si_idx = idx; | |
1da177e4 | 7299 | |
9a051019 | 7300 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
1da177e4 | 7301 | |
773642d9 | 7302 | devs_per_host = sdebug_num_tgts * sdebug_max_luns; |
9a051019 | 7303 | for (k = 0; k < devs_per_host; k++) { |
5cb2fc06 | 7304 | sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); |
87c715dc | 7305 | if (!sdbg_devinfo) |
1da177e4 | 7306 | goto clean; |
9a051019 | 7307 | } |
1da177e4 | 7308 | |
9a051019 DG |
7309 | spin_lock(&sdebug_host_list_lock); |
7310 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); | |
7311 | spin_unlock(&sdebug_host_list_lock); | |
1da177e4 | 7312 | |
9a051019 DG |
7313 | sdbg_host->dev.bus = &pseudo_lld_bus; |
7314 | sdbg_host->dev.parent = pseudo_primary; | |
7315 | sdbg_host->dev.release = &sdebug_release_adapter; | |
f19fe8f3 | 7316 | dev_set_name(&sdbg_host->dev, "adapter%d", sdebug_num_hosts); |
1da177e4 | 7317 | |
9a051019 | 7318 | error = device_register(&sdbg_host->dev); |
9a051019 | 7319 | if (error) |
1da177e4 LT |
7320 | goto clean; |
7321 | ||
f19fe8f3 | 7322 | ++sdebug_num_hosts; |
87c715dc | 7323 | return 0; |
1da177e4 LT |
7324 | |
7325 | clean: | |
8b40228f FT |
7326 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
7327 | dev_list) { | |
1da177e4 | 7328 | list_del(&sdbg_devinfo->dev_list); |
f0d1cf93 | 7329 | kfree(sdbg_devinfo->zstate); |
1da177e4 LT |
7330 | kfree(sdbg_devinfo); |
7331 | } | |
1da177e4 | 7332 | kfree(sdbg_host); |
87c715dc | 7333 | pr_warn("%s: failed, errno=%d\n", __func__, -error); |
9a051019 | 7334 | return error; |
1da177e4 LT |
7335 | } |
7336 | ||
87c715dc | 7337 | static int sdebug_do_add_host(bool mk_new_store) |
1da177e4 | 7338 | { |
87c715dc DG |
7339 | int ph_idx = sdeb_most_recent_idx; |
7340 | ||
7341 | if (mk_new_store) { | |
7342 | ph_idx = sdebug_add_store(); | |
7343 | if (ph_idx < 0) | |
7344 | return ph_idx; | |
7345 | } | |
7346 | return sdebug_add_host_helper(ph_idx); | |
7347 | } | |
7348 | ||
7349 | static void sdebug_do_remove_host(bool the_end) | |
7350 | { | |
7351 | int idx = -1; | |
9a051019 | 7352 | struct sdebug_host_info *sdbg_host = NULL; |
87c715dc | 7353 | struct sdebug_host_info *sdbg_host2; |
1da177e4 | 7354 | |
9a051019 DG |
7355 | spin_lock(&sdebug_host_list_lock); |
7356 | if (!list_empty(&sdebug_host_list)) { | |
7357 | sdbg_host = list_entry(sdebug_host_list.prev, | |
7358 | struct sdebug_host_info, host_list); | |
87c715dc | 7359 | idx = sdbg_host->si_idx; |
1da177e4 | 7360 | } |
87c715dc DG |
7361 | if (!the_end && idx >= 0) { |
7362 | bool unique = true; | |
7363 | ||
7364 | list_for_each_entry(sdbg_host2, &sdebug_host_list, host_list) { | |
7365 | if (sdbg_host2 == sdbg_host) | |
7366 | continue; | |
7367 | if (idx == sdbg_host2->si_idx) { | |
7368 | unique = false; | |
7369 | break; | |
7370 | } | |
7371 | } | |
7372 | if (unique) { | |
7373 | xa_set_mark(per_store_ap, idx, SDEB_XA_NOT_IN_USE); | |
7374 | if (idx == sdeb_most_recent_idx) | |
7375 | --sdeb_most_recent_idx; | |
7376 | } | |
7377 | } | |
7378 | if (sdbg_host) | |
7379 | list_del(&sdbg_host->host_list); | |
9a051019 | 7380 | spin_unlock(&sdebug_host_list_lock); |
1da177e4 LT |
7381 | |
7382 | if (!sdbg_host) | |
7383 | return; | |
7384 | ||
773642d9 | 7385 | device_unregister(&sdbg_host->dev); |
f19fe8f3 | 7386 | --sdebug_num_hosts; |
1da177e4 LT |
7387 | } |
7388 | ||
fd32119b | 7389 | static int sdebug_change_qdepth(struct scsi_device *sdev, int qdepth) |
cbf67842 DG |
7390 | { |
7391 | int num_in_q = 0; | |
cbf67842 DG |
7392 | struct sdebug_dev_info *devip; |
7393 | ||
f19fe8f3 | 7394 | block_unblock_all_queues(true); |
cbf67842 DG |
7395 | devip = (struct sdebug_dev_info *)sdev->hostdata; |
7396 | if (NULL == devip) { | |
f19fe8f3 | 7397 | block_unblock_all_queues(false); |
cbf67842 DG |
7398 | return -ENODEV; |
7399 | } | |
7400 | num_in_q = atomic_read(&devip->num_in_q); | |
c40ecc12 | 7401 | |
fc09acb7 DG |
7402 | if (qdepth > SDEBUG_CANQUEUE) { |
7403 | qdepth = SDEBUG_CANQUEUE; | |
7404 | pr_warn("%s: requested qdepth [%d] exceeds canqueue [%d], trim\n", __func__, | |
7405 | qdepth, SDEBUG_CANQUEUE); | |
7406 | } | |
c40ecc12 CH |
7407 | if (qdepth < 1) |
7408 | qdepth = 1; | |
fc09acb7 DG |
7409 | if (qdepth != sdev->queue_depth) |
7410 | scsi_change_queue_depth(sdev, qdepth); | |
c40ecc12 | 7411 | |
773642d9 | 7412 | if (SDEBUG_OPT_Q_NOISE & sdebug_opts) { |
c4837394 | 7413 | sdev_printk(KERN_INFO, sdev, "%s: qdepth=%d, num_in_q=%d\n", |
c40ecc12 | 7414 | __func__, qdepth, num_in_q); |
cbf67842 | 7415 | } |
f19fe8f3 | 7416 | block_unblock_all_queues(false); |
cbf67842 DG |
7417 | return sdev->queue_depth; |
7418 | } | |
7419 | ||
c4837394 | 7420 | static bool fake_timeout(struct scsi_cmnd *scp) |
817fd66b | 7421 | { |
c4837394 | 7422 | if (0 == (atomic_read(&sdebug_cmnd_count) % abs(sdebug_every_nth))) { |
773642d9 DG |
7423 | if (sdebug_every_nth < -1) |
7424 | sdebug_every_nth = -1; | |
7425 | if (SDEBUG_OPT_TIMEOUT & sdebug_opts) | |
c4837394 | 7426 | return true; /* ignore command causing timeout */ |
773642d9 | 7427 | else if (SDEBUG_OPT_MAC_TIMEOUT & sdebug_opts && |
817fd66b | 7428 | scsi_medium_access_command(scp)) |
c4837394 | 7429 | return true; /* time out reads and writes */ |
817fd66b | 7430 | } |
c4837394 | 7431 | return false; |
817fd66b DG |
7432 | } |
7433 | ||
fc13638a DG |
7434 | /* Response to TUR or media access command when device stopped */ |
7435 | static int resp_not_ready(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
7436 | { | |
7437 | int stopped_state; | |
7438 | u64 diff_ns = 0; | |
7439 | ktime_t now_ts = ktime_get_boottime(); | |
7440 | struct scsi_device *sdp = scp->device; | |
7441 | ||
7442 | stopped_state = atomic_read(&devip->stopped); | |
7443 | if (stopped_state == 2) { | |
7444 | if (ktime_to_ns(now_ts) > ktime_to_ns(devip->create_ts)) { | |
7445 | diff_ns = ktime_to_ns(ktime_sub(now_ts, devip->create_ts)); | |
7446 | if (diff_ns >= ((u64)sdeb_tur_ms_to_ready * 1000000)) { | |
7447 | /* tur_ms_to_ready timer extinguished */ | |
7448 | atomic_set(&devip->stopped, 0); | |
7449 | return 0; | |
7450 | } | |
7451 | } | |
7452 | mk_sense_buffer(scp, NOT_READY, LOGICAL_UNIT_NOT_READY, 0x1); | |
7453 | if (sdebug_verbose) | |
7454 | sdev_printk(KERN_INFO, sdp, | |
7455 | "%s: Not ready: in process of becoming ready\n", my_name); | |
7456 | if (scp->cmnd[0] == TEST_UNIT_READY) { | |
7457 | u64 tur_nanosecs_to_ready = (u64)sdeb_tur_ms_to_ready * 1000000; | |
7458 | ||
7459 | if (diff_ns <= tur_nanosecs_to_ready) | |
7460 | diff_ns = tur_nanosecs_to_ready - diff_ns; | |
7461 | else | |
7462 | diff_ns = tur_nanosecs_to_ready; | |
7463 | /* As per 20-061r2 approved for spc6 by T10 on 20200716 */ | |
7464 | do_div(diff_ns, 1000000); /* diff_ns becomes milliseconds */ | |
7465 | scsi_set_sense_information(scp->sense_buffer, SCSI_SENSE_BUFFERSIZE, | |
7466 | diff_ns); | |
7467 | return check_condition_result; | |
7468 | } | |
7469 | } | |
7470 | mk_sense_buffer(scp, NOT_READY, LOGICAL_UNIT_NOT_READY, 0x2); | |
7471 | if (sdebug_verbose) | |
7472 | sdev_printk(KERN_INFO, sdp, "%s: Not ready: initializing command required\n", | |
7473 | my_name); | |
7474 | return check_condition_result; | |
7475 | } | |
7476 | ||
a4e1d0b7 | 7477 | static void sdebug_map_queues(struct Scsi_Host *shost) |
c4b57d89 KD |
7478 | { |
7479 | int i, qoff; | |
7480 | ||
7481 | if (shost->nr_hw_queues == 1) | |
a4e1d0b7 | 7482 | return; |
c4b57d89 KD |
7483 | |
7484 | for (i = 0, qoff = 0; i < HCTX_MAX_TYPES; i++) { | |
7485 | struct blk_mq_queue_map *map = &shost->tag_set.map[i]; | |
7486 | ||
7487 | map->nr_queues = 0; | |
7488 | ||
7489 | if (i == HCTX_TYPE_DEFAULT) | |
7490 | map->nr_queues = submit_queues - poll_queues; | |
7491 | else if (i == HCTX_TYPE_POLL) | |
7492 | map->nr_queues = poll_queues; | |
7493 | ||
7494 | if (!map->nr_queues) { | |
7495 | BUG_ON(i == HCTX_TYPE_DEFAULT); | |
7496 | continue; | |
7497 | } | |
7498 | ||
7499 | map->queue_offset = qoff; | |
7500 | blk_mq_map_queues(map); | |
7501 | ||
7502 | qoff += map->nr_queues; | |
7503 | } | |
c4b57d89 KD |
7504 | } |
7505 | ||
7506 | static int sdebug_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num) | |
7507 | { | |
4a0c6f43 DG |
7508 | bool first; |
7509 | bool retiring = false; | |
7510 | int num_entries = 0; | |
7511 | unsigned int qc_idx = 0; | |
c4b57d89 | 7512 | unsigned long iflags; |
4a0c6f43 | 7513 | ktime_t kt_from_boot = ktime_get_boottime(); |
c4b57d89 KD |
7514 | struct sdebug_queue *sqp; |
7515 | struct sdebug_queued_cmd *sqcp; | |
7516 | struct scsi_cmnd *scp; | |
7517 | struct sdebug_dev_info *devip; | |
4a0c6f43 | 7518 | struct sdebug_defer *sd_dp; |
c4b57d89 KD |
7519 | |
7520 | sqp = sdebug_q_arr + queue_num; | |
7521 | ||
4a0c6f43 | 7522 | spin_lock_irqsave(&sqp->qc_lock, iflags); |
c4b57d89 | 7523 | |
6a0d0ae3 DLM |
7524 | qc_idx = find_first_bit(sqp->in_use_bm, sdebug_max_queue); |
7525 | if (qc_idx >= sdebug_max_queue) | |
7526 | goto unlock; | |
7527 | ||
4a0c6f43 DG |
7528 | for (first = true; first || qc_idx + 1 < sdebug_max_queue; ) { |
7529 | if (first) { | |
4a0c6f43 | 7530 | first = false; |
b05d4e48 DG |
7531 | if (!test_bit(qc_idx, sqp->in_use_bm)) |
7532 | continue; | |
4a0c6f43 DG |
7533 | } else { |
7534 | qc_idx = find_next_bit(sqp->in_use_bm, sdebug_max_queue, qc_idx + 1); | |
7535 | } | |
b05d4e48 | 7536 | if (qc_idx >= sdebug_max_queue) |
4a0c6f43 | 7537 | break; |
c4b57d89 KD |
7538 | |
7539 | sqcp = &sqp->qc_arr[qc_idx]; | |
4a0c6f43 DG |
7540 | sd_dp = sqcp->sd_dp; |
7541 | if (unlikely(!sd_dp)) | |
7542 | continue; | |
c4b57d89 KD |
7543 | scp = sqcp->a_cmnd; |
7544 | if (unlikely(scp == NULL)) { | |
4a0c6f43 | 7545 | pr_err("scp is NULL, queue_num=%d, qc_idx=%u from %s\n", |
c4b57d89 | 7546 | queue_num, qc_idx, __func__); |
4a0c6f43 | 7547 | break; |
c4b57d89 | 7548 | } |
d9d23a5a | 7549 | if (READ_ONCE(sd_dp->defer_t) == SDEB_DEFER_POLL) { |
4a0c6f43 DG |
7550 | if (kt_from_boot < sd_dp->cmpl_ts) |
7551 | continue; | |
7552 | ||
6ce913fe | 7553 | } else /* ignoring non REQ_POLLED requests */ |
4a0c6f43 | 7554 | continue; |
c4b57d89 KD |
7555 | devip = (struct sdebug_dev_info *)scp->device->hostdata; |
7556 | if (likely(devip)) | |
7557 | atomic_dec(&devip->num_in_q); | |
7558 | else | |
7559 | pr_err("devip=NULL from %s\n", __func__); | |
7560 | if (unlikely(atomic_read(&retired_max_queue) > 0)) | |
4a0c6f43 | 7561 | retiring = true; |
c4b57d89 KD |
7562 | |
7563 | sqcp->a_cmnd = NULL; | |
7564 | if (unlikely(!test_and_clear_bit(qc_idx, sqp->in_use_bm))) { | |
4a0c6f43 | 7565 | pr_err("Unexpected completion sqp %p queue_num=%d qc_idx=%u from %s\n", |
c4b57d89 | 7566 | sqp, queue_num, qc_idx, __func__); |
4a0c6f43 | 7567 | break; |
c4b57d89 | 7568 | } |
c4b57d89 KD |
7569 | if (unlikely(retiring)) { /* user has reduced max_queue */ |
7570 | int k, retval; | |
7571 | ||
7572 | retval = atomic_read(&retired_max_queue); | |
7573 | if (qc_idx >= retval) { | |
7574 | pr_err("index %d too large\n", retval); | |
4a0c6f43 | 7575 | break; |
c4b57d89 KD |
7576 | } |
7577 | k = find_last_bit(sqp->in_use_bm, retval); | |
7578 | if ((k < sdebug_max_queue) || (k == retval)) | |
7579 | atomic_set(&retired_max_queue, 0); | |
7580 | else | |
7581 | atomic_set(&retired_max_queue, k + 1); | |
7582 | } | |
d9d23a5a | 7583 | WRITE_ONCE(sd_dp->defer_t, SDEB_DEFER_NONE); |
c4b57d89 | 7584 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
6c2c7d6a | 7585 | scsi_done(scp); /* callback to mid level */ |
c4b57d89 | 7586 | num_entries++; |
3fd07aec | 7587 | spin_lock_irqsave(&sqp->qc_lock, iflags); |
b05d4e48 | 7588 | if (find_first_bit(sqp->in_use_bm, sdebug_max_queue) >= sdebug_max_queue) |
3fd07aec | 7589 | break; |
4a0c6f43 | 7590 | } |
3fd07aec | 7591 | |
6a0d0ae3 | 7592 | unlock: |
c4b57d89 | 7593 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
3fd07aec | 7594 | |
4a0c6f43 DG |
7595 | if (num_entries > 0) |
7596 | atomic_add(num_entries, &sdeb_mq_poll_count); | |
c4b57d89 KD |
7597 | return num_entries; |
7598 | } | |
7599 | ||
fd32119b DG |
7600 | static int scsi_debug_queuecommand(struct Scsi_Host *shost, |
7601 | struct scsi_cmnd *scp) | |
c2248fc9 DG |
7602 | { |
7603 | u8 sdeb_i; | |
7604 | struct scsi_device *sdp = scp->device; | |
7605 | const struct opcode_info_t *oip; | |
7606 | const struct opcode_info_t *r_oip; | |
7607 | struct sdebug_dev_info *devip; | |
7608 | u8 *cmd = scp->cmnd; | |
7609 | int (*r_pfp)(struct scsi_cmnd *, struct sdebug_dev_info *); | |
f66b8517 | 7610 | int (*pfp)(struct scsi_cmnd *, struct sdebug_dev_info *) = NULL; |
c2248fc9 DG |
7611 | int k, na; |
7612 | int errsts = 0; | |
ad0c7775 | 7613 | u64 lun_index = sdp->lun & 0x3FFF; |
c2248fc9 DG |
7614 | u32 flags; |
7615 | u16 sa; | |
7616 | u8 opcode = cmd[0]; | |
7617 | bool has_wlun_rl; | |
3a90a63d | 7618 | bool inject_now; |
c2248fc9 DG |
7619 | |
7620 | scsi_set_resid(scp, 0); | |
3a90a63d | 7621 | if (sdebug_statistics) { |
c4837394 | 7622 | atomic_inc(&sdebug_cmnd_count); |
3a90a63d DG |
7623 | inject_now = inject_on_this_cmd(); |
7624 | } else { | |
7625 | inject_now = false; | |
7626 | } | |
f46eb0e9 DG |
7627 | if (unlikely(sdebug_verbose && |
7628 | !(SDEBUG_OPT_NO_CDB_NOISE & sdebug_opts))) { | |
c2248fc9 DG |
7629 | char b[120]; |
7630 | int n, len, sb; | |
7631 | ||
7632 | len = scp->cmd_len; | |
7633 | sb = (int)sizeof(b); | |
7634 | if (len > 32) | |
7635 | strcpy(b, "too long, over 32 bytes"); | |
7636 | else { | |
7637 | for (k = 0, n = 0; k < len && n < sb; ++k) | |
7638 | n += scnprintf(b + n, sb - n, "%02x ", | |
7639 | (u32)cmd[k]); | |
7640 | } | |
458df78b | 7641 | sdev_printk(KERN_INFO, sdp, "%s: tag=%#x, cmd %s\n", my_name, |
a6e76e6f | 7642 | blk_mq_unique_tag(scsi_cmd_to_rq(scp)), b); |
c2248fc9 | 7643 | } |
3a90a63d | 7644 | if (unlikely(inject_now && (sdebug_opts & SDEBUG_OPT_HOST_BUSY))) |
7ee6d1b4 | 7645 | return SCSI_MLQUEUE_HOST_BUSY; |
34d55434 | 7646 | has_wlun_rl = (sdp->lun == SCSI_W_LUN_REPORT_LUNS); |
ad0c7775 | 7647 | if (unlikely(lun_index >= sdebug_max_luns && !has_wlun_rl)) |
f46eb0e9 | 7648 | goto err_out; |
c2248fc9 DG |
7649 | |
7650 | sdeb_i = opcode_ind_arr[opcode]; /* fully mapped */ | |
7651 | oip = &opcode_info_arr[sdeb_i]; /* safe if table consistent */ | |
7652 | devip = (struct sdebug_dev_info *)sdp->hostdata; | |
f46eb0e9 DG |
7653 | if (unlikely(!devip)) { |
7654 | devip = find_build_dev_info(sdp); | |
c2248fc9 | 7655 | if (NULL == devip) |
f46eb0e9 | 7656 | goto err_out; |
c2248fc9 | 7657 | } |
3a90a63d DG |
7658 | if (unlikely(inject_now && !atomic_read(&sdeb_inject_pending))) |
7659 | atomic_set(&sdeb_inject_pending, 1); | |
7660 | ||
c2248fc9 DG |
7661 | na = oip->num_attached; |
7662 | r_pfp = oip->pfp; | |
7663 | if (na) { /* multiple commands with this opcode */ | |
7664 | r_oip = oip; | |
7665 | if (FF_SA & r_oip->flags) { | |
7666 | if (F_SA_LOW & oip->flags) | |
7667 | sa = 0x1f & cmd[1]; | |
7668 | else | |
7669 | sa = get_unaligned_be16(cmd + 8); | |
7670 | for (k = 0; k <= na; oip = r_oip->arrp + k++) { | |
7671 | if (opcode == oip->opcode && sa == oip->sa) | |
7672 | break; | |
7673 | } | |
7674 | } else { /* since no service action only check opcode */ | |
7675 | for (k = 0; k <= na; oip = r_oip->arrp + k++) { | |
7676 | if (opcode == oip->opcode) | |
7677 | break; | |
7678 | } | |
7679 | } | |
7680 | if (k > na) { | |
7681 | if (F_SA_LOW & r_oip->flags) | |
7682 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 4); | |
7683 | else if (F_SA_HIGH & r_oip->flags) | |
7684 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 8, 7); | |
7685 | else | |
7686 | mk_sense_invalid_opcode(scp); | |
7687 | goto check_cond; | |
7688 | } | |
7689 | } /* else (when na==0) we assume the oip is a match */ | |
7690 | flags = oip->flags; | |
f46eb0e9 | 7691 | if (unlikely(F_INV_OP & flags)) { |
c2248fc9 DG |
7692 | mk_sense_invalid_opcode(scp); |
7693 | goto check_cond; | |
7694 | } | |
f46eb0e9 | 7695 | if (unlikely(has_wlun_rl && !(F_RL_WLUN_OK & flags))) { |
773642d9 DG |
7696 | if (sdebug_verbose) |
7697 | sdev_printk(KERN_INFO, sdp, "%s: Opcode 0x%x not%s\n", | |
7698 | my_name, opcode, " supported for wlun"); | |
c2248fc9 DG |
7699 | mk_sense_invalid_opcode(scp); |
7700 | goto check_cond; | |
7701 | } | |
f46eb0e9 | 7702 | if (unlikely(sdebug_strict)) { /* check cdb against mask */ |
c2248fc9 DG |
7703 | u8 rem; |
7704 | int j; | |
7705 | ||
7706 | for (k = 1; k < oip->len_mask[0] && k < 16; ++k) { | |
7707 | rem = ~oip->len_mask[k] & cmd[k]; | |
7708 | if (rem) { | |
7709 | for (j = 7; j >= 0; --j, rem <<= 1) { | |
7710 | if (0x80 & rem) | |
7711 | break; | |
7712 | } | |
7713 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, k, j); | |
7714 | goto check_cond; | |
7715 | } | |
7716 | } | |
7717 | } | |
f46eb0e9 | 7718 | if (unlikely(!(F_SKIP_UA & flags) && |
b01f6f83 DG |
7719 | find_first_bit(devip->uas_bm, |
7720 | SDEBUG_NUM_UAS) != SDEBUG_NUM_UAS)) { | |
f46eb0e9 | 7721 | errsts = make_ua(scp, devip); |
c2248fc9 DG |
7722 | if (errsts) |
7723 | goto check_cond; | |
7724 | } | |
fc13638a DG |
7725 | if (unlikely(((F_M_ACCESS & flags) || scp->cmnd[0] == TEST_UNIT_READY) && |
7726 | atomic_read(&devip->stopped))) { | |
7727 | errsts = resp_not_ready(scp, devip); | |
7728 | if (errsts) | |
7729 | goto fini; | |
c2248fc9 | 7730 | } |
773642d9 | 7731 | if (sdebug_fake_rw && (F_FAKE_RW & flags)) |
c2248fc9 | 7732 | goto fini; |
f46eb0e9 | 7733 | if (unlikely(sdebug_every_nth)) { |
c4837394 | 7734 | if (fake_timeout(scp)) |
c2248fc9 DG |
7735 | return 0; /* ignore command: make trouble */ |
7736 | } | |
f46eb0e9 | 7737 | if (likely(oip->pfp)) |
f66b8517 MW |
7738 | pfp = oip->pfp; /* calls a resp_* function */ |
7739 | else | |
7740 | pfp = r_pfp; /* if leaf function ptr NULL, try the root's */ | |
c2248fc9 DG |
7741 | |
7742 | fini: | |
67da413f | 7743 | if (F_DELAY_OVERR & flags) /* cmds like INQUIRY respond asap */ |
f66b8517 | 7744 | return schedule_resp(scp, devip, errsts, pfp, 0, 0); |
75aa3209 DG |
7745 | else if ((flags & F_LONG_DELAY) && (sdebug_jdelay > 0 || |
7746 | sdebug_ndelay > 10000)) { | |
80c49563 | 7747 | /* |
75aa3209 DG |
7748 | * Skip long delays if ndelay <= 10 microseconds. Otherwise |
7749 | * for Start Stop Unit (SSU) want at least 1 second delay and | |
7750 | * if sdebug_jdelay>1 want a long delay of that many seconds. | |
7751 | * For Synchronize Cache want 1/20 of SSU's delay. | |
80c49563 DG |
7752 | */ |
7753 | int jdelay = (sdebug_jdelay < 2) ? 1 : sdebug_jdelay; | |
4f2c8bf6 | 7754 | int denom = (flags & F_SYNC_DELAY) ? 20 : 1; |
80c49563 | 7755 | |
4f2c8bf6 | 7756 | jdelay = mult_frac(USER_HZ * jdelay, HZ, denom * USER_HZ); |
f66b8517 | 7757 | return schedule_resp(scp, devip, errsts, pfp, jdelay, 0); |
80c49563 | 7758 | } else |
f66b8517 | 7759 | return schedule_resp(scp, devip, errsts, pfp, sdebug_jdelay, |
10bde980 | 7760 | sdebug_ndelay); |
c2248fc9 | 7761 | check_cond: |
f66b8517 | 7762 | return schedule_resp(scp, devip, check_condition_result, NULL, 0, 0); |
f46eb0e9 | 7763 | err_out: |
f66b8517 | 7764 | return schedule_resp(scp, NULL, DID_NO_CONNECT << 16, NULL, 0, 0); |
c2248fc9 DG |
7765 | } |
7766 | ||
9e603ca0 | 7767 | static struct scsi_host_template sdebug_driver_template = { |
c8ed555a AV |
7768 | .show_info = scsi_debug_show_info, |
7769 | .write_info = scsi_debug_write_info, | |
9e603ca0 FT |
7770 | .proc_name = sdebug_proc_name, |
7771 | .name = "SCSI DEBUG", | |
7772 | .info = scsi_debug_info, | |
7773 | .slave_alloc = scsi_debug_slave_alloc, | |
7774 | .slave_configure = scsi_debug_slave_configure, | |
7775 | .slave_destroy = scsi_debug_slave_destroy, | |
7776 | .ioctl = scsi_debug_ioctl, | |
185dd232 | 7777 | .queuecommand = scsi_debug_queuecommand, |
cbf67842 | 7778 | .change_queue_depth = sdebug_change_qdepth, |
c4b57d89 KD |
7779 | .map_queues = sdebug_map_queues, |
7780 | .mq_poll = sdebug_blk_mq_poll, | |
9e603ca0 | 7781 | .eh_abort_handler = scsi_debug_abort, |
9e603ca0 | 7782 | .eh_device_reset_handler = scsi_debug_device_reset, |
cbf67842 DG |
7783 | .eh_target_reset_handler = scsi_debug_target_reset, |
7784 | .eh_bus_reset_handler = scsi_debug_bus_reset, | |
9e603ca0 | 7785 | .eh_host_reset_handler = scsi_debug_host_reset, |
c4837394 | 7786 | .can_queue = SDEBUG_CANQUEUE, |
9e603ca0 | 7787 | .this_id = 7, |
65e8617f | 7788 | .sg_tablesize = SG_MAX_SEGMENTS, |
cbf67842 | 7789 | .cmd_per_lun = DEF_CMD_PER_LUN, |
6bb5e6e7 | 7790 | .max_sectors = -1U, |
50c2e910 | 7791 | .max_segment_size = -1U, |
9e603ca0 | 7792 | .module = THIS_MODULE, |
c40ecc12 | 7793 | .track_queue_depth = 1, |
9e603ca0 FT |
7794 | }; |
7795 | ||
91d4c752 | 7796 | static int sdebug_driver_probe(struct device *dev) |
1da177e4 | 7797 | { |
22017ed2 DG |
7798 | int error = 0; |
7799 | struct sdebug_host_info *sdbg_host; | |
7800 | struct Scsi_Host *hpnt; | |
f46eb0e9 | 7801 | int hprot; |
1da177e4 LT |
7802 | |
7803 | sdbg_host = to_sdebug_host(dev); | |
7804 | ||
f7c4cdc7 | 7805 | sdebug_driver_template.can_queue = sdebug_max_queue; |
fc09acb7 | 7806 | sdebug_driver_template.cmd_per_lun = sdebug_max_queue; |
2a3d4eb8 | 7807 | if (!sdebug_clustering) |
4af14d11 CH |
7808 | sdebug_driver_template.dma_boundary = PAGE_SIZE - 1; |
7809 | ||
78d4e5a0 DG |
7810 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); |
7811 | if (NULL == hpnt) { | |
c1287970 | 7812 | pr_err("scsi_host_alloc failed\n"); |
78d4e5a0 | 7813 | error = -ENODEV; |
1da177e4 | 7814 | return error; |
78d4e5a0 | 7815 | } |
c4837394 | 7816 | if (submit_queues > nr_cpu_ids) { |
9b130ad5 | 7817 | pr_warn("%s: trim submit_queues (was %d) to nr_cpu_ids=%u\n", |
c4837394 DG |
7818 | my_name, submit_queues, nr_cpu_ids); |
7819 | submit_queues = nr_cpu_ids; | |
7820 | } | |
c10fa55f JG |
7821 | /* |
7822 | * Decide whether to tell scsi subsystem that we want mq. The | |
f7c4cdc7 | 7823 | * following should give the same answer for each host. |
c10fa55f | 7824 | */ |
f7c4cdc7 JG |
7825 | hpnt->nr_hw_queues = submit_queues; |
7826 | if (sdebug_host_max_queue) | |
7827 | hpnt->host_tagset = 1; | |
1da177e4 | 7828 | |
c4b57d89 KD |
7829 | /* poll queues are possible for nr_hw_queues > 1 */ |
7830 | if (hpnt->nr_hw_queues == 1 || (poll_queues < 1)) { | |
7831 | pr_warn("%s: trim poll_queues to 0. poll_q/nr_hw = (%d/%d)\n", | |
7832 | my_name, poll_queues, hpnt->nr_hw_queues); | |
7833 | poll_queues = 0; | |
7834 | } | |
7835 | ||
7836 | /* | |
7837 | * Poll queues don't need interrupts, but we need at least one I/O queue | |
7838 | * left over for non-polled I/O. | |
7839 | * If condition not met, trim poll_queues to 1 (just for simplicity). | |
7840 | */ | |
7841 | if (poll_queues >= submit_queues) { | |
fc09acb7 DG |
7842 | if (submit_queues < 3) |
7843 | pr_warn("%s: trim poll_queues to 1\n", my_name); | |
7844 | else | |
7845 | pr_warn("%s: trim poll_queues to 1. Perhaps try poll_queues=%d\n", | |
7846 | my_name, submit_queues - 1); | |
c4b57d89 KD |
7847 | poll_queues = 1; |
7848 | } | |
7849 | if (poll_queues) | |
7850 | hpnt->nr_maps = 3; | |
7851 | ||
9a051019 | 7852 | sdbg_host->shost = hpnt; |
1da177e4 | 7853 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; |
773642d9 DG |
7854 | if ((hpnt->this_id >= 0) && (sdebug_num_tgts > hpnt->this_id)) |
7855 | hpnt->max_id = sdebug_num_tgts + 1; | |
1da177e4 | 7856 | else |
773642d9 DG |
7857 | hpnt->max_id = sdebug_num_tgts; |
7858 | /* = sdebug_max_luns; */ | |
f2d3fd29 | 7859 | hpnt->max_lun = SCSI_W_LUN_REPORT_LUNS + 1; |
1da177e4 | 7860 | |
f46eb0e9 | 7861 | hprot = 0; |
c6a44287 | 7862 | |
773642d9 | 7863 | switch (sdebug_dif) { |
c6a44287 | 7864 | |
8475c811 | 7865 | case T10_PI_TYPE1_PROTECTION: |
f46eb0e9 | 7866 | hprot = SHOST_DIF_TYPE1_PROTECTION; |
773642d9 | 7867 | if (sdebug_dix) |
f46eb0e9 | 7868 | hprot |= SHOST_DIX_TYPE1_PROTECTION; |
c6a44287 MP |
7869 | break; |
7870 | ||
8475c811 | 7871 | case T10_PI_TYPE2_PROTECTION: |
f46eb0e9 | 7872 | hprot = SHOST_DIF_TYPE2_PROTECTION; |
773642d9 | 7873 | if (sdebug_dix) |
f46eb0e9 | 7874 | hprot |= SHOST_DIX_TYPE2_PROTECTION; |
c6a44287 MP |
7875 | break; |
7876 | ||
8475c811 | 7877 | case T10_PI_TYPE3_PROTECTION: |
f46eb0e9 | 7878 | hprot = SHOST_DIF_TYPE3_PROTECTION; |
773642d9 | 7879 | if (sdebug_dix) |
f46eb0e9 | 7880 | hprot |= SHOST_DIX_TYPE3_PROTECTION; |
c6a44287 MP |
7881 | break; |
7882 | ||
7883 | default: | |
773642d9 | 7884 | if (sdebug_dix) |
f46eb0e9 | 7885 | hprot |= SHOST_DIX_TYPE0_PROTECTION; |
c6a44287 MP |
7886 | break; |
7887 | } | |
7888 | ||
f46eb0e9 | 7889 | scsi_host_set_prot(hpnt, hprot); |
c6a44287 | 7890 | |
f46eb0e9 DG |
7891 | if (have_dif_prot || sdebug_dix) |
7892 | pr_info("host protection%s%s%s%s%s%s%s\n", | |
7893 | (hprot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", | |
7894 | (hprot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", | |
7895 | (hprot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", | |
7896 | (hprot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", | |
7897 | (hprot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", | |
7898 | (hprot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", | |
7899 | (hprot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); | |
c6a44287 | 7900 | |
773642d9 | 7901 | if (sdebug_guard == 1) |
c6a44287 MP |
7902 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP); |
7903 | else | |
7904 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC); | |
7905 | ||
773642d9 DG |
7906 | sdebug_verbose = !!(SDEBUG_OPT_NOISE & sdebug_opts); |
7907 | sdebug_any_injecting_opt = !!(SDEBUG_OPT_ALL_INJECTING & sdebug_opts); | |
c4837394 DG |
7908 | if (sdebug_every_nth) /* need stats counters for every_nth */ |
7909 | sdebug_statistics = true; | |
9a051019 DG |
7910 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
7911 | if (error) { | |
c1287970 | 7912 | pr_err("scsi_add_host failed\n"); |
9a051019 | 7913 | error = -ENODEV; |
1da177e4 | 7914 | scsi_host_put(hpnt); |
87c715dc | 7915 | } else { |
1da177e4 | 7916 | scsi_scan_host(hpnt); |
87c715dc | 7917 | } |
1da177e4 | 7918 | |
cbf67842 | 7919 | return error; |
1da177e4 LT |
7920 | } |
7921 | ||
fc7a6209 | 7922 | static void sdebug_driver_remove(struct device *dev) |
1da177e4 | 7923 | { |
9a051019 | 7924 | struct sdebug_host_info *sdbg_host; |
8b40228f | 7925 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 LT |
7926 | |
7927 | sdbg_host = to_sdebug_host(dev); | |
7928 | ||
9a051019 | 7929 | scsi_remove_host(sdbg_host->shost); |
1da177e4 | 7930 | |
8b40228f FT |
7931 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
7932 | dev_list) { | |
9a051019 | 7933 | list_del(&sdbg_devinfo->dev_list); |
f0d1cf93 | 7934 | kfree(sdbg_devinfo->zstate); |
9a051019 DG |
7935 | kfree(sdbg_devinfo); |
7936 | } | |
1da177e4 | 7937 | |
9a051019 | 7938 | scsi_host_put(sdbg_host->shost); |
1da177e4 LT |
7939 | } |
7940 | ||
8dea0d02 FT |
7941 | static int pseudo_lld_bus_match(struct device *dev, |
7942 | struct device_driver *dev_driver) | |
1da177e4 | 7943 | { |
8dea0d02 | 7944 | return 1; |
1da177e4 | 7945 | } |
8dea0d02 FT |
7946 | |
7947 | static struct bus_type pseudo_lld_bus = { | |
7948 | .name = "pseudo", | |
7949 | .match = pseudo_lld_bus_match, | |
7950 | .probe = sdebug_driver_probe, | |
7951 | .remove = sdebug_driver_remove, | |
82069379 | 7952 | .drv_groups = sdebug_drv_groups, |
8dea0d02 | 7953 | }; |