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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv |
3 | * Copyright (C) 1992 Eric Youngdale | |
4 | * Simulate a host adapter with 2 disks attached. Do a lot of checking | |
5 | * to make sure that we are not getting blocks mixed up, and PANIC if | |
6 | * anything out of the ordinary is seen. | |
7 | * ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
8 | * | |
9 | * This version is more generic, simulating a variable number of disk | |
23183910 DG |
10 | * (or disk like devices) sharing a common amount of RAM. To be more |
11 | * realistic, the simulated devices have the transport attributes of | |
12 | * SAS disks. | |
1da177e4 LT |
13 | * |
14 | * | |
78d4e5a0 | 15 | * For documentation see http://sg.danny.cz/sg/sdebug26.html |
1da177e4 LT |
16 | * |
17 | * D. Gilbert (dpg) work for Magneto-Optical device test [20010421] | |
18 | * dpg: work for devfs large number of disks [20010809] | |
19 | * forked for lk 2.5 series [20011216, 20020101] | |
20 | * use vmalloc() more inquiry+mode_sense [20020302] | |
21 | * add timers for delayed responses [20020721] | |
22 | * Patrick Mansfield <patmans@us.ibm.com> max_luns+scsi_level [20021031] | |
23 | * Mike Anderson <andmike@us.ibm.com> sysfs work [20021118] | |
24 | * dpg: change style of boot options to "scsi_debug.num_tgts=2" and | |
25 | * module options to "modprobe scsi_debug num_tgts=2" [20021221] | |
26 | */ | |
27 | ||
1da177e4 LT |
28 | #include <linux/module.h> |
29 | ||
30 | #include <linux/kernel.h> | |
1da177e4 LT |
31 | #include <linux/errno.h> |
32 | #include <linux/timer.h> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1da177e4 LT |
34 | #include <linux/types.h> |
35 | #include <linux/string.h> | |
36 | #include <linux/genhd.h> | |
37 | #include <linux/fs.h> | |
38 | #include <linux/init.h> | |
39 | #include <linux/proc_fs.h> | |
1da177e4 LT |
40 | #include <linux/vmalloc.h> |
41 | #include <linux/moduleparam.h> | |
852e034d | 42 | #include <linux/scatterlist.h> |
1da177e4 | 43 | #include <linux/blkdev.h> |
c6a44287 | 44 | #include <linux/crc-t10dif.h> |
cbf67842 DG |
45 | #include <linux/spinlock.h> |
46 | #include <linux/interrupt.h> | |
47 | #include <linux/atomic.h> | |
48 | #include <linux/hrtimer.h> | |
c6a44287 MP |
49 | |
50 | #include <net/checksum.h> | |
9ff26eef | 51 | |
44d92694 MP |
52 | #include <asm/unaligned.h> |
53 | ||
9ff26eef FT |
54 | #include <scsi/scsi.h> |
55 | #include <scsi/scsi_cmnd.h> | |
56 | #include <scsi/scsi_device.h> | |
1da177e4 LT |
57 | #include <scsi/scsi_host.h> |
58 | #include <scsi/scsicam.h> | |
a34c4e98 | 59 | #include <scsi/scsi_eh.h> |
cbf67842 | 60 | #include <scsi/scsi_tcq.h> |
395cef03 | 61 | #include <scsi/scsi_dbg.h> |
1da177e4 | 62 | |
c6a44287 | 63 | #include "sd.h" |
1da177e4 | 64 | #include "scsi_logging.h" |
1da177e4 | 65 | |
22017ed2 DG |
66 | #define SCSI_DEBUG_VERSION "1.85" |
67 | static const char *scsi_debug_version_date = "20141022"; | |
cbf67842 DG |
68 | |
69 | #define MY_NAME "scsi_debug" | |
1da177e4 | 70 | |
6f3cbf55 | 71 | /* Additional Sense Code (ASC) */ |
c65b1445 DG |
72 | #define NO_ADDITIONAL_SENSE 0x0 |
73 | #define LOGICAL_UNIT_NOT_READY 0x4 | |
c2248fc9 | 74 | #define LOGICAL_UNIT_COMMUNICATION_FAILURE 0x8 |
1da177e4 | 75 | #define UNRECOVERED_READ_ERR 0x11 |
c65b1445 | 76 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
1da177e4 | 77 | #define INVALID_OPCODE 0x20 |
22017ed2 | 78 | #define LBA_OUT_OF_RANGE 0x21 |
1da177e4 | 79 | #define INVALID_FIELD_IN_CDB 0x24 |
c65b1445 | 80 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
cbf67842 DG |
81 | #define UA_RESET_ASC 0x29 |
82 | #define UA_CHANGED_ASC 0x2a | |
22017ed2 DG |
83 | #define INSUFF_RES_ASC 0x55 |
84 | #define INSUFF_RES_ASCQ 0x3 | |
cbf67842 DG |
85 | #define POWER_ON_RESET_ASCQ 0x0 |
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 |
1da177e4 | 94 | |
6f3cbf55 DG |
95 | /* Additional Sense Code Qualifier (ASCQ) */ |
96 | #define ACK_NAK_TO 0x3 | |
97 | ||
1da177e4 LT |
98 | |
99 | /* Default values for driver parameters */ | |
100 | #define DEF_NUM_HOST 1 | |
101 | #define DEF_NUM_TGTS 1 | |
102 | #define DEF_MAX_LUNS 1 | |
103 | /* With these defaults, this driver will make 1 host with 1 target | |
104 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. | |
105 | */ | |
5b94e232 | 106 | #define DEF_ATO 1 |
cbf67842 | 107 | #define DEF_DELAY 1 /* if > 0 unit is a jiffy */ |
1da177e4 | 108 | #define DEF_DEV_SIZE_MB 8 |
5b94e232 MP |
109 | #define DEF_DIF 0 |
110 | #define DEF_DIX 0 | |
1da177e4 | 111 | #define DEF_D_SENSE 0 |
5b94e232 | 112 | #define DEF_EVERY_NTH 0 |
23183910 | 113 | #define DEF_FAKE_RW 0 |
c6a44287 | 114 | #define DEF_GUARD 0 |
cbf67842 | 115 | #define DEF_HOST_LOCK 0 |
5b94e232 MP |
116 | #define DEF_LBPU 0 |
117 | #define DEF_LBPWS 0 | |
118 | #define DEF_LBPWS10 0 | |
be1dd78d | 119 | #define DEF_LBPRZ 1 |
ea61fca5 | 120 | #define DEF_LOWEST_ALIGNED 0 |
cbf67842 | 121 | #define DEF_NDELAY 0 /* if > 0 unit is a nanosecond */ |
5b94e232 MP |
122 | #define DEF_NO_LUN_0 0 |
123 | #define DEF_NUM_PARTS 0 | |
124 | #define DEF_OPTS 0 | |
e308b3d1 | 125 | #define DEF_OPT_BLKS 64 |
5b94e232 MP |
126 | #define DEF_PHYSBLK_EXP 0 |
127 | #define DEF_PTYPE 0 | |
d986788b | 128 | #define DEF_REMOVABLE false |
e46b0344 | 129 | #define DEF_SCSI_LEVEL 6 /* INQUIRY, byte2 [6->SPC-4] */ |
5b94e232 MP |
130 | #define DEF_SECTOR_SIZE 512 |
131 | #define DEF_UNMAP_ALIGNMENT 0 | |
132 | #define DEF_UNMAP_GRANULARITY 1 | |
6014759c MP |
133 | #define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF |
134 | #define DEF_UNMAP_MAX_DESC 256 | |
5b94e232 MP |
135 | #define DEF_VIRTUAL_GB 0 |
136 | #define DEF_VPD_USE_HOSTNO 1 | |
137 | #define DEF_WRITESAME_LENGTH 0xFFFF | |
c2248fc9 | 138 | #define DEF_STRICT 0 |
cbf67842 | 139 | #define DELAY_OVERRIDDEN -9999 |
1da177e4 LT |
140 | |
141 | /* bit mask values for scsi_debug_opts */ | |
142 | #define SCSI_DEBUG_OPT_NOISE 1 | |
143 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 | |
144 | #define SCSI_DEBUG_OPT_TIMEOUT 4 | |
145 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 | |
6f3cbf55 | 146 | #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
c6a44287 MP |
147 | #define SCSI_DEBUG_OPT_DIF_ERR 32 |
148 | #define SCSI_DEBUG_OPT_DIX_ERR 64 | |
18a4d0a2 | 149 | #define SCSI_DEBUG_OPT_MAC_TIMEOUT 128 |
cbf67842 DG |
150 | #define SCSI_DEBUG_OPT_SHORT_TRANSFER 0x100 |
151 | #define SCSI_DEBUG_OPT_Q_NOISE 0x200 | |
152 | #define SCSI_DEBUG_OPT_ALL_TSF 0x400 | |
153 | #define SCSI_DEBUG_OPT_RARE_TSF 0x800 | |
154 | #define SCSI_DEBUG_OPT_N_WCE 0x1000 | |
155 | #define SCSI_DEBUG_OPT_RESET_NOISE 0x2000 | |
156 | #define SCSI_DEBUG_OPT_NO_CDB_NOISE 0x4000 | |
157 | #define SCSI_DEBUG_OPT_ALL_NOISE (0x1 | 0x200 | 0x2000) | |
1da177e4 LT |
158 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
159 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
160 | * - a RECOVERED_ERROR is simulated on successful read and write | |
161 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
162 | * - a TRANSPORT_ERROR is simulated on successful read and write |
163 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
164 | * |
165 | * When "every_nth" < 0 then after "- every_nth" commands: | |
166 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
167 | * - a RECOVERED_ERROR is simulated on successful read and write | |
168 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
169 | * - a TRANSPORT_ERROR is simulated on successful read and write |
170 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
171 | * This will continue until some other action occurs (e.g. the user |
172 | * writing a new value (other than -1 or 1) to every_nth via sysfs). | |
173 | */ | |
174 | ||
cbf67842 DG |
175 | /* As indicated in SAM-5 and SPC-4 Unit Attentions (UAs)are returned in |
176 | * priority order. In the subset implemented here lower numbers have higher | |
177 | * priority. The UA numbers should be a sequence starting from 0 with | |
178 | * SDEBUG_NUM_UAS being 1 higher than the highest numbered UA. */ | |
179 | #define SDEBUG_UA_POR 0 /* Power on, reset, or bus device reset */ | |
180 | #define SDEBUG_UA_BUS_RESET 1 | |
181 | #define SDEBUG_UA_MODE_CHANGED 2 | |
0d01c5df DG |
182 | #define SDEBUG_UA_CAPACITY_CHANGED 3 |
183 | #define SDEBUG_NUM_UAS 4 | |
cbf67842 DG |
184 | |
185 | /* for check_readiness() */ | |
c2248fc9 DG |
186 | #define UAS_ONLY 1 /* check for UAs only */ |
187 | #define UAS_TUR 0 /* if no UAs then check if media access possible */ | |
cbf67842 | 188 | |
1da177e4 LT |
189 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this |
190 | * sector on read commands: */ | |
191 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ | |
32f7ef73 | 192 | #define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */ |
1da177e4 LT |
193 | |
194 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) | |
195 | * or "peripheral device" addressing (value 0) */ | |
196 | #define SAM2_LUN_ADDRESS_METHOD 0 | |
c65b1445 | 197 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
1da177e4 | 198 | |
cbf67842 DG |
199 | /* SCSI_DEBUG_CANQUEUE is the maximum number of commands that can be queued |
200 | * (for response) at one time. Can be reduced by max_queue option. Command | |
201 | * responses are not queued when delay=0 and ndelay=0. The per-device | |
202 | * DEF_CMD_PER_LUN can be changed via sysfs: | |
203 | * /sys/class/scsi_device/<h:c:t:l>/device/queue_depth but cannot exceed | |
204 | * SCSI_DEBUG_CANQUEUE. */ | |
205 | #define SCSI_DEBUG_CANQUEUE_WORDS 9 /* a WORD is bits in a long */ | |
206 | #define SCSI_DEBUG_CANQUEUE (SCSI_DEBUG_CANQUEUE_WORDS * BITS_PER_LONG) | |
207 | #define DEF_CMD_PER_LUN 255 | |
208 | ||
209 | #if DEF_CMD_PER_LUN > SCSI_DEBUG_CANQUEUE | |
210 | #warning "Expect DEF_CMD_PER_LUN <= SCSI_DEBUG_CANQUEUE" | |
211 | #endif | |
78d4e5a0 | 212 | |
c2248fc9 DG |
213 | /* SCSI opcodes (first byte of cdb) mapped onto these indexes */ |
214 | enum sdeb_opcode_index { | |
215 | SDEB_I_INVALID_OPCODE = 0, | |
216 | SDEB_I_INQUIRY = 1, | |
217 | SDEB_I_REPORT_LUNS = 2, | |
218 | SDEB_I_REQUEST_SENSE = 3, | |
219 | SDEB_I_TEST_UNIT_READY = 4, | |
220 | SDEB_I_MODE_SENSE = 5, /* 6, 10 */ | |
221 | SDEB_I_MODE_SELECT = 6, /* 6, 10 */ | |
222 | SDEB_I_LOG_SENSE = 7, | |
223 | SDEB_I_READ_CAPACITY = 8, /* 10; 16 is in SA_IN(16) */ | |
224 | SDEB_I_READ = 9, /* 6, 10, 12, 16 */ | |
225 | SDEB_I_WRITE = 10, /* 6, 10, 12, 16 */ | |
226 | SDEB_I_START_STOP = 11, | |
227 | SDEB_I_SERV_ACT_IN = 12, /* 12, 16 */ | |
228 | SDEB_I_SERV_ACT_OUT = 13, /* 12, 16 */ | |
229 | SDEB_I_MAINT_IN = 14, | |
230 | SDEB_I_MAINT_OUT = 15, | |
231 | SDEB_I_VERIFY = 16, /* 10 only */ | |
232 | SDEB_I_VARIABLE_LEN = 17, | |
233 | SDEB_I_RESERVE = 18, /* 6, 10 */ | |
234 | SDEB_I_RELEASE = 19, /* 6, 10 */ | |
235 | SDEB_I_ALLOW_REMOVAL = 20, /* PREVENT ALLOW MEDIUM REMOVAL */ | |
236 | SDEB_I_REZERO_UNIT = 21, /* REWIND in SSC */ | |
237 | SDEB_I_ATA_PT = 22, /* 12, 16 */ | |
238 | SDEB_I_SEND_DIAG = 23, | |
239 | SDEB_I_UNMAP = 24, | |
240 | SDEB_I_XDWRITEREAD = 25, /* 10 only */ | |
241 | SDEB_I_WRITE_BUFFER = 26, | |
242 | SDEB_I_WRITE_SAME = 27, /* 10, 16 */ | |
243 | SDEB_I_SYNC_CACHE = 28, /* 10 only */ | |
244 | SDEB_I_COMP_WRITE = 29, | |
245 | SDEB_I_LAST_ELEMENT = 30, /* keep this last */ | |
246 | }; | |
247 | ||
248 | static const unsigned char opcode_ind_arr[256] = { | |
249 | /* 0x0; 0x0->0x1f: 6 byte cdbs */ | |
250 | SDEB_I_TEST_UNIT_READY, SDEB_I_REZERO_UNIT, 0, SDEB_I_REQUEST_SENSE, | |
251 | 0, 0, 0, 0, | |
252 | SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, 0, | |
253 | 0, 0, SDEB_I_INQUIRY, 0, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, | |
254 | SDEB_I_RELEASE, | |
255 | 0, 0, SDEB_I_MODE_SENSE, SDEB_I_START_STOP, 0, SDEB_I_SEND_DIAG, | |
256 | SDEB_I_ALLOW_REMOVAL, 0, | |
257 | /* 0x20; 0x20->0x3f: 10 byte cdbs */ | |
258 | 0, 0, 0, 0, 0, SDEB_I_READ_CAPACITY, 0, 0, | |
259 | SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, SDEB_I_VERIFY, | |
260 | 0, 0, 0, 0, 0, SDEB_I_SYNC_CACHE, 0, 0, | |
261 | 0, 0, 0, SDEB_I_WRITE_BUFFER, 0, 0, 0, 0, | |
262 | /* 0x40; 0x40->0x5f: 10 byte cdbs */ | |
263 | 0, SDEB_I_WRITE_SAME, SDEB_I_UNMAP, 0, 0, 0, 0, 0, | |
264 | 0, 0, 0, 0, 0, SDEB_I_LOG_SENSE, 0, 0, | |
265 | 0, 0, 0, SDEB_I_XDWRITEREAD, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, | |
266 | SDEB_I_RELEASE, | |
267 | 0, 0, SDEB_I_MODE_SENSE, 0, 0, 0, 0, 0, | |
268 | /* 0x60; 0x60->0x7d are reserved */ | |
269 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
270 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
271 | 0, SDEB_I_VARIABLE_LEN, | |
272 | /* 0x80; 0x80->0x9f: 16 byte cdbs */ | |
273 | 0, 0, 0, 0, 0, SDEB_I_ATA_PT, 0, 0, | |
274 | SDEB_I_READ, SDEB_I_COMP_WRITE, SDEB_I_WRITE, 0, 0, 0, 0, 0, | |
275 | 0, 0, 0, SDEB_I_WRITE_SAME, 0, 0, 0, 0, | |
276 | 0, 0, 0, 0, 0, 0, SDEB_I_SERV_ACT_IN, SDEB_I_SERV_ACT_OUT, | |
277 | /* 0xa0; 0xa0->0xbf: 12 byte cdbs */ | |
278 | SDEB_I_REPORT_LUNS, SDEB_I_ATA_PT, 0, SDEB_I_MAINT_IN, | |
279 | SDEB_I_MAINT_OUT, 0, 0, 0, | |
280 | SDEB_I_READ, SDEB_I_SERV_ACT_OUT, SDEB_I_WRITE, SDEB_I_SERV_ACT_IN, | |
281 | 0, 0, 0, 0, | |
282 | 0, 0, 0, 0, 0, 0, 0, 0, | |
283 | 0, 0, 0, 0, 0, 0, 0, 0, | |
284 | /* 0xc0; 0xc0->0xff: vendor specific */ | |
285 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
286 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
287 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
288 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
289 | }; | |
290 | ||
291 | #define F_D_IN 1 | |
292 | #define F_D_OUT 2 | |
293 | #define F_D_OUT_MAYBE 4 /* WRITE SAME, NDOB bit */ | |
294 | #define F_D_UNKN 8 | |
295 | #define F_RL_WLUN_OK 0x10 | |
296 | #define F_SKIP_UA 0x20 | |
297 | #define F_DELAY_OVERR 0x40 | |
298 | #define F_SA_LOW 0x80 /* cdb byte 1, bits 4 to 0 */ | |
299 | #define F_SA_HIGH 0x100 /* as used by variable length cdbs */ | |
300 | #define F_INV_OP 0x200 | |
301 | #define F_FAKE_RW 0x400 | |
302 | #define F_M_ACCESS 0x800 /* media access */ | |
303 | ||
304 | #define FF_RESPOND (F_RL_WLUN_OK | F_SKIP_UA | F_DELAY_OVERR) | |
305 | #define FF_DIRECT_IO (F_M_ACCESS | F_FAKE_RW) | |
306 | #define FF_SA (F_SA_HIGH | F_SA_LOW) | |
307 | ||
308 | struct sdebug_dev_info; | |
c2248fc9 DG |
309 | static int resp_inquiry(struct scsi_cmnd *, struct sdebug_dev_info *); |
310 | static int resp_report_luns(struct scsi_cmnd *, struct sdebug_dev_info *); | |
311 | static int resp_requests(struct scsi_cmnd *, struct sdebug_dev_info *); | |
312 | static int resp_mode_sense(struct scsi_cmnd *, struct sdebug_dev_info *); | |
313 | static int resp_mode_select(struct scsi_cmnd *, struct sdebug_dev_info *); | |
314 | static int resp_log_sense(struct scsi_cmnd *, struct sdebug_dev_info *); | |
315 | static int resp_readcap(struct scsi_cmnd *, struct sdebug_dev_info *); | |
316 | static int resp_read_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); | |
317 | static int resp_write_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); | |
318 | static int resp_start_stop(struct scsi_cmnd *, struct sdebug_dev_info *); | |
319 | static int resp_readcap16(struct scsi_cmnd *, struct sdebug_dev_info *); | |
320 | static int resp_get_lba_status(struct scsi_cmnd *, struct sdebug_dev_info *); | |
321 | static int resp_report_tgtpgs(struct scsi_cmnd *, struct sdebug_dev_info *); | |
322 | static int resp_unmap(struct scsi_cmnd *, struct sdebug_dev_info *); | |
38d5c833 DG |
323 | static int resp_rsup_opcodes(struct scsi_cmnd *, struct sdebug_dev_info *); |
324 | static int resp_rsup_tmfs(struct scsi_cmnd *, struct sdebug_dev_info *); | |
c2248fc9 DG |
325 | static int resp_write_same_10(struct scsi_cmnd *, struct sdebug_dev_info *); |
326 | static int resp_write_same_16(struct scsi_cmnd *, struct sdebug_dev_info *); | |
327 | static int resp_xdwriteread_10(struct scsi_cmnd *, struct sdebug_dev_info *); | |
38d5c833 | 328 | static int resp_comp_write(struct scsi_cmnd *, struct sdebug_dev_info *); |
c2248fc9 DG |
329 | |
330 | struct opcode_info_t { | |
331 | u8 num_attached; /* 0 if this is it (i.e. a leaf); use 0xff | |
332 | * for terminating element */ | |
333 | u8 opcode; /* if num_attached > 0, preferred */ | |
334 | u16 sa; /* service action */ | |
335 | u32 flags; /* OR-ed set of SDEB_F_* */ | |
336 | int (*pfp)(struct scsi_cmnd *, struct sdebug_dev_info *); | |
337 | const struct opcode_info_t *arrp; /* num_attached elements or NULL */ | |
338 | u8 len_mask[16]; /* len=len_mask[0], then mask for cdb[1]... */ | |
339 | /* ignore cdb bytes after position 15 */ | |
340 | }; | |
341 | ||
342 | static const struct opcode_info_t msense_iarr[1] = { | |
343 | {0, 0x1a, 0, F_D_IN, NULL, NULL, | |
344 | {6, 0xe8, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
345 | }; | |
346 | ||
347 | static const struct opcode_info_t mselect_iarr[1] = { | |
348 | {0, 0x15, 0, F_D_OUT, NULL, NULL, | |
349 | {6, 0xf1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
350 | }; | |
351 | ||
352 | static const struct opcode_info_t read_iarr[3] = { | |
353 | {0, 0x28, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL,/* READ(10) */ | |
354 | {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, | |
355 | 0, 0, 0, 0} }, | |
356 | {0, 0x8, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL, /* READ(6) */ | |
357 | {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
358 | {0, 0xa8, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL,/* READ(12) */ | |
359 | {12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, | |
360 | 0xc7, 0, 0, 0, 0} }, | |
361 | }; | |
362 | ||
363 | static const struct opcode_info_t write_iarr[3] = { | |
364 | {0, 0x2a, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 10 */ | |
365 | {10, 0xfb, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, | |
366 | 0, 0, 0, 0} }, | |
367 | {0, 0xa, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 6 */ | |
368 | {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
369 | {0, 0xaa, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 12 */ | |
370 | {12, 0xfb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, | |
371 | 0xc7, 0, 0, 0, 0} }, | |
372 | }; | |
373 | ||
374 | static const struct opcode_info_t sa_in_iarr[1] = { | |
375 | {0, 0x9e, 0x12, F_SA_LOW | F_D_IN, resp_get_lba_status, NULL, | |
376 | {16, 0x12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
377 | 0xff, 0xff, 0xff, 0, 0xc7} }, | |
378 | }; | |
379 | ||
380 | static const struct opcode_info_t vl_iarr[1] = { /* VARIABLE LENGTH */ | |
381 | {0, 0x7f, 0xb, F_SA_HIGH | F_D_OUT | FF_DIRECT_IO, resp_write_dt0, | |
382 | NULL, {32, 0xc7, 0, 0, 0, 0, 0x1f, 0x18, 0x0, 0xb, 0xfa, | |
383 | 0, 0xff, 0xff, 0xff, 0xff} }, /* WRITE(32) */ | |
384 | }; | |
385 | ||
386 | static const struct opcode_info_t maint_in_iarr[2] = { | |
38d5c833 | 387 | {0, 0xa3, 0xc, F_SA_LOW | F_D_IN, resp_rsup_opcodes, NULL, |
c2248fc9 DG |
388 | {12, 0xc, 0x87, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, |
389 | 0xc7, 0, 0, 0, 0} }, | |
38d5c833 | 390 | {0, 0xa3, 0xd, F_SA_LOW | F_D_IN, resp_rsup_tmfs, NULL, |
c2248fc9 DG |
391 | {12, 0xd, 0x80, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, |
392 | 0, 0} }, | |
393 | }; | |
394 | ||
395 | static const struct opcode_info_t write_same_iarr[1] = { | |
396 | {0, 0x93, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, resp_write_same_16, NULL, | |
397 | {16, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
398 | 0xff, 0xff, 0xff, 0x1f, 0xc7} }, | |
399 | }; | |
400 | ||
401 | static const struct opcode_info_t reserve_iarr[1] = { | |
402 | {0, 0x16, 0, F_D_OUT, NULL, NULL, /* RESERVE(6) */ | |
403 | {6, 0x1f, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
404 | }; | |
405 | ||
406 | static const struct opcode_info_t release_iarr[1] = { | |
407 | {0, 0x17, 0, F_D_OUT, NULL, NULL, /* RELEASE(6) */ | |
408 | {6, 0x1f, 0xff, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
409 | }; | |
410 | ||
411 | ||
412 | /* This array is accessed via SDEB_I_* values. Make sure all are mapped, | |
413 | * plus the terminating elements for logic that scans this table such as | |
414 | * REPORT SUPPORTED OPERATION CODES. */ | |
415 | static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEMENT + 1] = { | |
416 | /* 0 */ | |
417 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, | |
418 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
419 | {0, 0x12, 0, FF_RESPOND | F_D_IN, resp_inquiry, NULL, | |
420 | {6, 0xe3, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
421 | {0, 0xa0, 0, FF_RESPOND | F_D_IN, resp_report_luns, NULL, | |
422 | {12, 0xe3, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, | |
423 | 0, 0} }, | |
424 | {0, 0x3, 0, FF_RESPOND | F_D_IN, resp_requests, NULL, | |
425 | {6, 0xe1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
426 | {0, 0x0, 0, F_M_ACCESS | F_RL_WLUN_OK, NULL, NULL,/* TEST UNIT READY */ | |
427 | {6, 0, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
428 | {1, 0x5a, 0, F_D_IN, resp_mode_sense, msense_iarr, | |
429 | {10, 0xf8, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, | |
430 | 0} }, | |
431 | {1, 0x55, 0, F_D_OUT, resp_mode_select, mselect_iarr, | |
432 | {10, 0xf1, 0, 0, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, | |
433 | {0, 0x4d, 0, F_D_IN, resp_log_sense, NULL, | |
434 | {10, 0xe3, 0xff, 0xff, 0, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, | |
435 | 0, 0, 0} }, | |
436 | {0, 0x25, 0, F_D_IN, resp_readcap, NULL, | |
437 | {10, 0xe1, 0xff, 0xff, 0xff, 0xff, 0, 0, 0x1, 0xc7, 0, 0, 0, 0, | |
438 | 0, 0} }, | |
439 | {3, 0x88, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, read_iarr, | |
440 | {16, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
441 | 0xff, 0xff, 0xff, 0x9f, 0xc7} }, /* READ(16) */ | |
442 | /* 10 */ | |
443 | {3, 0x8a, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, write_iarr, | |
444 | {16, 0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
445 | 0xff, 0xff, 0xff, 0x9f, 0xc7} }, /* WRITE(16) */ | |
446 | {0, 0x1b, 0, 0, resp_start_stop, NULL, /* START STOP UNIT */ | |
447 | {6, 0x1, 0, 0xf, 0xf7, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
448 | {1, 0x9e, 0x10, F_SA_LOW | F_D_IN, resp_readcap16, sa_in_iarr, | |
449 | {16, 0x10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
450 | 0xff, 0xff, 0xff, 0x1, 0xc7} }, /* READ CAPACITY(16) */ | |
451 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* SA OUT */ | |
452 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
453 | {2, 0xa3, 0xa, F_SA_LOW | F_D_IN, resp_report_tgtpgs, maint_in_iarr, | |
454 | {12, 0xea, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, 0, | |
455 | 0} }, | |
456 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* MAINT OUT */ | |
457 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
458 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* VERIFY */ | |
459 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
460 | {1, 0x7f, 0x9, F_SA_HIGH | F_D_IN | FF_DIRECT_IO, resp_read_dt0, | |
461 | vl_iarr, {32, 0xc7, 0, 0, 0, 0, 0x1f, 0x18, 0x0, 0x9, 0xfe, 0, | |
462 | 0xff, 0xff, 0xff, 0xff} },/* VARIABLE LENGTH, READ(32) */ | |
463 | {1, 0x56, 0, F_D_OUT, NULL, reserve_iarr, /* RESERVE(10) */ | |
464 | {10, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, | |
465 | 0} }, | |
466 | {1, 0x57, 0, F_D_OUT, NULL, release_iarr, /* RELEASE(10) */ | |
467 | {10, 0x13, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, | |
468 | 0} }, | |
469 | /* 20 */ | |
470 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* ALLOW REMOVAL */ | |
471 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
472 | {0, 0x1, 0, 0, resp_start_stop, NULL, /* REWIND ?? */ | |
473 | {6, 0x1, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
474 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* ATA_PT */ | |
475 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
476 | {0, 0x1d, F_D_OUT, 0, NULL, NULL, /* SEND DIAGNOSTIC */ | |
477 | {6, 0xf7, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
478 | {0, 0x42, 0, F_D_OUT | FF_DIRECT_IO, resp_unmap, NULL, /* UNMAP */ | |
479 | {10, 0x1, 0, 0, 0, 0, 0x1f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, | |
480 | {0, 0x53, 0, F_D_IN | F_D_OUT | FF_DIRECT_IO, resp_xdwriteread_10, | |
481 | NULL, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, | |
482 | 0, 0, 0, 0, 0, 0} }, | |
483 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* WRITE_BUFFER */ | |
484 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
485 | {1, 0x41, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, resp_write_same_10, | |
486 | write_same_iarr, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, | |
487 | 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, | |
488 | {0, 0x35, 0, F_DELAY_OVERR | FF_DIRECT_IO, NULL, NULL, /* SYNC_CACHE */ | |
489 | {10, 0x7, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, | |
490 | 0, 0, 0, 0} }, | |
38d5c833 | 491 | {0, 0x89, 0, F_D_OUT | FF_DIRECT_IO, resp_comp_write, NULL, |
c2248fc9 DG |
492 | {16, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, |
493 | 0, 0xff, 0x1f, 0xc7} }, /* COMPARE AND WRITE */ | |
494 | ||
495 | /* 30 */ | |
496 | {0xff, 0, 0, 0, NULL, NULL, /* terminating element */ | |
497 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
498 | }; | |
499 | ||
817fd66b DG |
500 | struct sdebug_scmd_extra_t { |
501 | bool inj_recovered; | |
502 | bool inj_transport; | |
503 | bool inj_dif; | |
504 | bool inj_dix; | |
505 | bool inj_short; | |
506 | }; | |
507 | ||
1da177e4 | 508 | static int scsi_debug_add_host = DEF_NUM_HOST; |
5b94e232 | 509 | static int scsi_debug_ato = DEF_ATO; |
1da177e4 LT |
510 | static int scsi_debug_delay = DEF_DELAY; |
511 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; | |
5b94e232 MP |
512 | static int scsi_debug_dif = DEF_DIF; |
513 | static int scsi_debug_dix = DEF_DIX; | |
514 | static int scsi_debug_dsense = DEF_D_SENSE; | |
1da177e4 | 515 | static int scsi_debug_every_nth = DEF_EVERY_NTH; |
5b94e232 | 516 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
68aee7ba | 517 | static unsigned int scsi_debug_guard = DEF_GUARD; |
5b94e232 | 518 | static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED; |
1da177e4 | 519 | static int scsi_debug_max_luns = DEF_MAX_LUNS; |
78d4e5a0 | 520 | static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE; |
cbf67842 DG |
521 | static atomic_t retired_max_queue; /* if > 0 then was prior max_queue */ |
522 | static int scsi_debug_ndelay = DEF_NDELAY; | |
5b94e232 | 523 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
78d4e5a0 | 524 | static int scsi_debug_no_uld = 0; |
5b94e232 | 525 | static int scsi_debug_num_parts = DEF_NUM_PARTS; |
1da177e4 | 526 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ |
5b94e232 | 527 | static int scsi_debug_opt_blks = DEF_OPT_BLKS; |
1da177e4 | 528 | static int scsi_debug_opts = DEF_OPTS; |
5b94e232 | 529 | static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP; |
1da177e4 | 530 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ |
5b94e232 MP |
531 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; |
532 | static int scsi_debug_sector_size = DEF_SECTOR_SIZE; | |
c65b1445 | 533 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; |
23183910 | 534 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; |
5b94e232 MP |
535 | static unsigned int scsi_debug_lbpu = DEF_LBPU; |
536 | static unsigned int scsi_debug_lbpws = DEF_LBPWS; | |
537 | static unsigned int scsi_debug_lbpws10 = DEF_LBPWS10; | |
be1dd78d | 538 | static unsigned int scsi_debug_lbprz = DEF_LBPRZ; |
6014759c | 539 | static unsigned int scsi_debug_unmap_alignment = DEF_UNMAP_ALIGNMENT; |
5b94e232 MP |
540 | static unsigned int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY; |
541 | static unsigned int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS; | |
542 | static unsigned int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC; | |
543 | static unsigned int scsi_debug_write_same_length = DEF_WRITESAME_LENGTH; | |
d986788b | 544 | static bool scsi_debug_removable = DEF_REMOVABLE; |
0759c666 | 545 | static bool scsi_debug_clustering; |
cbf67842 | 546 | static bool scsi_debug_host_lock = DEF_HOST_LOCK; |
c2248fc9 | 547 | static bool scsi_debug_strict = DEF_STRICT; |
817fd66b | 548 | static bool sdebug_any_injecting_opt; |
1da177e4 | 549 | |
cbf67842 DG |
550 | static atomic_t sdebug_cmnd_count; |
551 | static atomic_t sdebug_completions; | |
552 | static atomic_t sdebug_a_tsf; /* counter of 'almost' TSFs */ | |
1da177e4 LT |
553 | |
554 | #define DEV_READONLY(TGT) (0) | |
1da177e4 | 555 | |
c65b1445 | 556 | static unsigned int sdebug_store_sectors; |
1da177e4 LT |
557 | static sector_t sdebug_capacity; /* in sectors */ |
558 | ||
559 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages | |
560 | may still need them */ | |
561 | static int sdebug_heads; /* heads per disk */ | |
562 | static int sdebug_cylinders_per; /* cylinders per surface */ | |
563 | static int sdebug_sectors_per; /* sectors per cylinder */ | |
564 | ||
1da177e4 LT |
565 | #define SDEBUG_MAX_PARTS 4 |
566 | ||
395cef03 | 567 | #define SCSI_DEBUG_MAX_CMD_LEN 32 |
9e603ca0 | 568 | |
5b94e232 MP |
569 | static unsigned int scsi_debug_lbp(void) |
570 | { | |
cbf67842 DG |
571 | return ((0 == scsi_debug_fake_rw) && |
572 | (scsi_debug_lbpu | scsi_debug_lbpws | scsi_debug_lbpws10)); | |
5b94e232 MP |
573 | } |
574 | ||
1da177e4 LT |
575 | struct sdebug_dev_info { |
576 | struct list_head dev_list; | |
1da177e4 LT |
577 | unsigned int channel; |
578 | unsigned int target; | |
9cb78c16 | 579 | u64 lun; |
1da177e4 | 580 | struct sdebug_host_info *sdbg_host; |
cbf67842 DG |
581 | unsigned long uas_bm[1]; |
582 | atomic_t num_in_q; | |
c2248fc9 DG |
583 | char stopped; /* TODO: should be atomic */ |
584 | bool used; | |
1da177e4 LT |
585 | }; |
586 | ||
587 | struct sdebug_host_info { | |
588 | struct list_head host_list; | |
589 | struct Scsi_Host *shost; | |
590 | struct device dev; | |
591 | struct list_head dev_info_list; | |
592 | }; | |
593 | ||
594 | #define to_sdebug_host(d) \ | |
595 | container_of(d, struct sdebug_host_info, dev) | |
596 | ||
597 | static LIST_HEAD(sdebug_host_list); | |
598 | static DEFINE_SPINLOCK(sdebug_host_list_lock); | |
599 | ||
cbf67842 DG |
600 | |
601 | struct sdebug_hrtimer { /* ... is derived from hrtimer */ | |
602 | struct hrtimer hrt; /* must be first element */ | |
603 | int qa_indx; | |
604 | }; | |
1da177e4 LT |
605 | |
606 | struct sdebug_queued_cmd { | |
cbf67842 DG |
607 | /* in_use flagged by a bit in queued_in_use_bm[] */ |
608 | struct timer_list *cmnd_timerp; | |
609 | struct tasklet_struct *tletp; | |
610 | struct sdebug_hrtimer *sd_hrtp; | |
1da177e4 | 611 | struct scsi_cmnd * a_cmnd; |
1da177e4 LT |
612 | }; |
613 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; | |
cbf67842 DG |
614 | static unsigned long queued_in_use_bm[SCSI_DEBUG_CANQUEUE_WORDS]; |
615 | ||
1da177e4 | 616 | |
1da177e4 | 617 | static unsigned char * fake_storep; /* ramdisk storage */ |
e18d8bea | 618 | static struct sd_dif_tuple *dif_storep; /* protection info */ |
44d92694 | 619 | static void *map_storep; /* provisioning map */ |
1da177e4 | 620 | |
44d92694 | 621 | static unsigned long map_size; |
cbf67842 DG |
622 | static int num_aborts; |
623 | static int num_dev_resets; | |
624 | static int num_target_resets; | |
625 | static int num_bus_resets; | |
626 | static int num_host_resets; | |
c6a44287 MP |
627 | static int dix_writes; |
628 | static int dix_reads; | |
629 | static int dif_errors; | |
1da177e4 LT |
630 | |
631 | static DEFINE_SPINLOCK(queued_arr_lock); | |
632 | static DEFINE_RWLOCK(atomic_rw); | |
633 | ||
cbf67842 DG |
634 | static char sdebug_proc_name[] = MY_NAME; |
635 | static const char *my_name = MY_NAME; | |
1da177e4 | 636 | |
1da177e4 LT |
637 | static struct bus_type pseudo_lld_bus; |
638 | ||
639 | static struct device_driver sdebug_driverfs_driver = { | |
640 | .name = sdebug_proc_name, | |
641 | .bus = &pseudo_lld_bus, | |
1da177e4 LT |
642 | }; |
643 | ||
644 | static const int check_condition_result = | |
645 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | |
646 | ||
c6a44287 MP |
647 | static const int illegal_condition_result = |
648 | (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; | |
649 | ||
cbf67842 DG |
650 | static const int device_qfull_result = |
651 | (DID_OK << 16) | (COMMAND_COMPLETE << 8) | SAM_STAT_TASK_SET_FULL; | |
652 | ||
653 | static unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
654 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, | |
655 | 0, 0, 0, 0}; | |
c65b1445 DG |
656 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
657 | 0, 0, 0x2, 0x4b}; | |
658 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
659 | 0, 0, 0x0, 0x0}; | |
660 | ||
14faa944 AM |
661 | static void *fake_store(unsigned long long lba) |
662 | { | |
663 | lba = do_div(lba, sdebug_store_sectors); | |
664 | ||
665 | return fake_storep + lba * scsi_debug_sector_size; | |
666 | } | |
667 | ||
668 | static struct sd_dif_tuple *dif_store(sector_t sector) | |
669 | { | |
670 | sector = do_div(sector, sdebug_store_sectors); | |
671 | ||
672 | return dif_storep + sector; | |
673 | } | |
674 | ||
1da177e4 LT |
675 | static int sdebug_add_adapter(void); |
676 | static void sdebug_remove_adapter(void); | |
1da177e4 | 677 | |
8dea0d02 FT |
678 | static void sdebug_max_tgts_luns(void) |
679 | { | |
680 | struct sdebug_host_info *sdbg_host; | |
681 | struct Scsi_Host *hpnt; | |
682 | ||
683 | spin_lock(&sdebug_host_list_lock); | |
684 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
685 | hpnt = sdbg_host->shost; | |
686 | if ((hpnt->this_id >= 0) && | |
687 | (scsi_debug_num_tgts > hpnt->this_id)) | |
688 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
689 | else | |
690 | hpnt->max_id = scsi_debug_num_tgts; | |
691 | /* scsi_debug_max_luns; */ | |
692 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; | |
693 | } | |
694 | spin_unlock(&sdebug_host_list_lock); | |
695 | } | |
696 | ||
22017ed2 DG |
697 | enum sdeb_cmd_data {SDEB_IN_DATA = 0, SDEB_IN_CDB = 1}; |
698 | ||
699 | /* Set in_bit to -1 to indicate no bit position of invalid field */ | |
700 | static void | |
701 | mk_sense_invalid_fld(struct scsi_cmnd *scp, enum sdeb_cmd_data c_d, | |
702 | int in_byte, int in_bit) | |
703 | { | |
704 | unsigned char *sbuff; | |
705 | u8 sks[4]; | |
706 | int sl, asc; | |
707 | ||
708 | sbuff = scp->sense_buffer; | |
709 | if (!sbuff) { | |
710 | sdev_printk(KERN_ERR, scp->device, | |
711 | "%s: sense_buffer is NULL\n", __func__); | |
712 | return; | |
713 | } | |
714 | asc = c_d ? INVALID_FIELD_IN_CDB : INVALID_FIELD_IN_PARAM_LIST; | |
715 | memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); | |
716 | scsi_build_sense_buffer(scsi_debug_dsense, sbuff, ILLEGAL_REQUEST, | |
717 | asc, 0); | |
718 | memset(sks, 0, sizeof(sks)); | |
719 | sks[0] = 0x80; | |
720 | if (c_d) | |
721 | sks[0] |= 0x40; | |
722 | if (in_bit >= 0) { | |
723 | sks[0] |= 0x8; | |
724 | sks[0] |= 0x7 & in_bit; | |
725 | } | |
726 | put_unaligned_be16(in_byte, sks + 1); | |
727 | if (scsi_debug_dsense) { | |
728 | sl = sbuff[7] + 8; | |
729 | sbuff[7] = sl; | |
730 | sbuff[sl] = 0x2; | |
731 | sbuff[sl + 1] = 0x6; | |
732 | memcpy(sbuff + sl + 4, sks, 3); | |
733 | } else | |
734 | memcpy(sbuff + 15, sks, 3); | |
735 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
736 | sdev_printk(KERN_INFO, scp->device, "%s: [sense_key,asc,ascq" | |
737 | "]: [0x5,0x%x,0x0] %c byte=%d, bit=%d\n", | |
738 | my_name, asc, c_d ? 'C' : 'D', in_byte, in_bit); | |
739 | } | |
740 | ||
cbf67842 | 741 | static void mk_sense_buffer(struct scsi_cmnd *scp, int key, int asc, int asq) |
8dea0d02 FT |
742 | { |
743 | unsigned char *sbuff; | |
744 | ||
cbf67842 DG |
745 | sbuff = scp->sense_buffer; |
746 | if (!sbuff) { | |
747 | sdev_printk(KERN_ERR, scp->device, | |
748 | "%s: sense_buffer is NULL\n", __func__); | |
749 | return; | |
750 | } | |
751 | memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); | |
8dea0d02 FT |
752 | |
753 | scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); | |
754 | ||
755 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
cbf67842 DG |
756 | sdev_printk(KERN_INFO, scp->device, |
757 | "%s: [sense_key,asc,ascq]: [0x%x,0x%x,0x%x]\n", | |
758 | my_name, key, asc, asq); | |
8dea0d02 | 759 | } |
1da177e4 | 760 | |
22017ed2 DG |
761 | static void |
762 | mk_sense_invalid_opcode(struct scsi_cmnd *scp) | |
763 | { | |
764 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_OPCODE, 0); | |
765 | } | |
766 | ||
1da177e4 LT |
767 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
768 | { | |
769 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
cbf67842 DG |
770 | if (0x1261 == cmd) |
771 | sdev_printk(KERN_INFO, dev, | |
772 | "%s: BLKFLSBUF [0x1261]\n", __func__); | |
773 | else if (0x5331 == cmd) | |
774 | sdev_printk(KERN_INFO, dev, | |
775 | "%s: CDROM_GET_CAPABILITY [0x5331]\n", | |
776 | __func__); | |
777 | else | |
778 | sdev_printk(KERN_INFO, dev, "%s: cmd=0x%x\n", | |
779 | __func__, cmd); | |
1da177e4 LT |
780 | } |
781 | return -EINVAL; | |
782 | /* return -ENOTTY; // correct return but upsets fdisk */ | |
783 | } | |
784 | ||
cbf67842 | 785 | static int check_readiness(struct scsi_cmnd *SCpnt, int uas_only, |
c65b1445 | 786 | struct sdebug_dev_info * devip) |
1da177e4 | 787 | { |
cbf67842 DG |
788 | int k; |
789 | bool debug = !!(SCSI_DEBUG_OPT_NOISE & scsi_debug_opts); | |
790 | ||
791 | k = find_first_bit(devip->uas_bm, SDEBUG_NUM_UAS); | |
792 | if (k != SDEBUG_NUM_UAS) { | |
793 | const char *cp = NULL; | |
794 | ||
795 | switch (k) { | |
796 | case SDEBUG_UA_POR: | |
797 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
798 | UA_RESET_ASC, POWER_ON_RESET_ASCQ); | |
799 | if (debug) | |
800 | cp = "power on reset"; | |
801 | break; | |
802 | case SDEBUG_UA_BUS_RESET: | |
803 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
804 | UA_RESET_ASC, BUS_RESET_ASCQ); | |
805 | if (debug) | |
806 | cp = "bus reset"; | |
807 | break; | |
808 | case SDEBUG_UA_MODE_CHANGED: | |
809 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
810 | UA_CHANGED_ASC, MODE_CHANGED_ASCQ); | |
811 | if (debug) | |
812 | cp = "mode parameters changed"; | |
813 | break; | |
0d01c5df DG |
814 | case SDEBUG_UA_CAPACITY_CHANGED: |
815 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
816 | UA_CHANGED_ASC, CAPACITY_CHANGED_ASCQ); | |
817 | if (debug) | |
818 | cp = "capacity data changed"; | |
f49accf1 | 819 | break; |
cbf67842 DG |
820 | default: |
821 | pr_warn("%s: unexpected unit attention code=%d\n", | |
822 | __func__, k); | |
823 | if (debug) | |
824 | cp = "unknown"; | |
825 | break; | |
826 | } | |
827 | clear_bit(k, devip->uas_bm); | |
828 | if (debug) | |
829 | sdev_printk(KERN_INFO, SCpnt->device, | |
830 | "%s reports: Unit attention: %s\n", | |
831 | my_name, cp); | |
1da177e4 LT |
832 | return check_condition_result; |
833 | } | |
cbf67842 DG |
834 | if ((UAS_TUR == uas_only) && devip->stopped) { |
835 | mk_sense_buffer(SCpnt, NOT_READY, LOGICAL_UNIT_NOT_READY, | |
c65b1445 | 836 | 0x2); |
cbf67842 DG |
837 | if (debug) |
838 | sdev_printk(KERN_INFO, SCpnt->device, | |
839 | "%s reports: Not ready: %s\n", my_name, | |
840 | "initializing command required"); | |
c65b1445 DG |
841 | return check_condition_result; |
842 | } | |
1da177e4 LT |
843 | return 0; |
844 | } | |
845 | ||
846 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ | |
21a61829 | 847 | static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
1da177e4 LT |
848 | int arr_len) |
849 | { | |
21a61829 | 850 | int act_len; |
072d0bb3 | 851 | struct scsi_data_buffer *sdb = scsi_in(scp); |
1da177e4 | 852 | |
072d0bb3 | 853 | if (!sdb->length) |
1da177e4 | 854 | return 0; |
072d0bb3 | 855 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
1da177e4 | 856 | return (DID_ERROR << 16); |
21a61829 FT |
857 | |
858 | act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, | |
859 | arr, arr_len); | |
a4517511 | 860 | sdb->resid = scsi_bufflen(scp) - act_len; |
21a61829 | 861 | |
1da177e4 LT |
862 | return 0; |
863 | } | |
864 | ||
865 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ | |
21a61829 FT |
866 | static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
867 | int arr_len) | |
1da177e4 | 868 | { |
21a61829 | 869 | if (!scsi_bufflen(scp)) |
1da177e4 | 870 | return 0; |
072d0bb3 | 871 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
1da177e4 | 872 | return -1; |
21a61829 FT |
873 | |
874 | return scsi_sg_copy_to_buffer(scp, arr, arr_len); | |
1da177e4 LT |
875 | } |
876 | ||
877 | ||
878 | static const char * inq_vendor_id = "Linux "; | |
879 | static const char * inq_product_id = "scsi_debug "; | |
cbf67842 | 880 | static const char *inq_product_rev = "0184"; /* version less '.' */ |
1da177e4 | 881 | |
cbf67842 | 882 | /* Device identification VPD page. Returns number of bytes placed in arr */ |
5a09e398 HR |
883 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
884 | int target_dev_id, int dev_id_num, | |
885 | const char * dev_id_str, | |
c65b1445 | 886 | int dev_id_str_len) |
1da177e4 | 887 | { |
c65b1445 DG |
888 | int num, port_a; |
889 | char b[32]; | |
1da177e4 | 890 | |
c65b1445 | 891 | port_a = target_dev_id + 1; |
1da177e4 LT |
892 | /* T10 vendor identifier field format (faked) */ |
893 | arr[0] = 0x2; /* ASCII */ | |
894 | arr[1] = 0x1; | |
895 | arr[2] = 0x0; | |
896 | memcpy(&arr[4], inq_vendor_id, 8); | |
897 | memcpy(&arr[12], inq_product_id, 16); | |
898 | memcpy(&arr[28], dev_id_str, dev_id_str_len); | |
899 | num = 8 + 16 + dev_id_str_len; | |
900 | arr[3] = num; | |
901 | num += 4; | |
c65b1445 DG |
902 | if (dev_id_num >= 0) { |
903 | /* NAA-5, Logical unit identifier (binary) */ | |
904 | arr[num++] = 0x1; /* binary (not necessarily sas) */ | |
905 | arr[num++] = 0x3; /* PIV=0, lu, naa */ | |
906 | arr[num++] = 0x0; | |
907 | arr[num++] = 0x8; | |
908 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ | |
909 | arr[num++] = 0x33; | |
910 | arr[num++] = 0x33; | |
911 | arr[num++] = 0x30; | |
912 | arr[num++] = (dev_id_num >> 24); | |
913 | arr[num++] = (dev_id_num >> 16) & 0xff; | |
914 | arr[num++] = (dev_id_num >> 8) & 0xff; | |
915 | arr[num++] = dev_id_num & 0xff; | |
916 | /* Target relative port number */ | |
917 | arr[num++] = 0x61; /* proto=sas, binary */ | |
918 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ | |
919 | arr[num++] = 0x0; /* reserved */ | |
920 | arr[num++] = 0x4; /* length */ | |
921 | arr[num++] = 0x0; /* reserved */ | |
922 | arr[num++] = 0x0; /* reserved */ | |
923 | arr[num++] = 0x0; | |
924 | arr[num++] = 0x1; /* relative port A */ | |
925 | } | |
926 | /* NAA-5, Target port identifier */ | |
927 | arr[num++] = 0x61; /* proto=sas, binary */ | |
928 | arr[num++] = 0x93; /* piv=1, target port, naa */ | |
929 | arr[num++] = 0x0; | |
930 | arr[num++] = 0x8; | |
931 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
932 | arr[num++] = 0x22; | |
933 | arr[num++] = 0x22; | |
934 | arr[num++] = 0x20; | |
935 | arr[num++] = (port_a >> 24); | |
936 | arr[num++] = (port_a >> 16) & 0xff; | |
937 | arr[num++] = (port_a >> 8) & 0xff; | |
938 | arr[num++] = port_a & 0xff; | |
5a09e398 HR |
939 | /* NAA-5, Target port group identifier */ |
940 | arr[num++] = 0x61; /* proto=sas, binary */ | |
941 | arr[num++] = 0x95; /* piv=1, target port group id */ | |
942 | arr[num++] = 0x0; | |
943 | arr[num++] = 0x4; | |
944 | arr[num++] = 0; | |
945 | arr[num++] = 0; | |
946 | arr[num++] = (port_group_id >> 8) & 0xff; | |
947 | arr[num++] = port_group_id & 0xff; | |
c65b1445 DG |
948 | /* NAA-5, Target device identifier */ |
949 | arr[num++] = 0x61; /* proto=sas, binary */ | |
950 | arr[num++] = 0xa3; /* piv=1, target device, naa */ | |
951 | arr[num++] = 0x0; | |
952 | arr[num++] = 0x8; | |
953 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
954 | arr[num++] = 0x22; | |
955 | arr[num++] = 0x22; | |
956 | arr[num++] = 0x20; | |
957 | arr[num++] = (target_dev_id >> 24); | |
958 | arr[num++] = (target_dev_id >> 16) & 0xff; | |
959 | arr[num++] = (target_dev_id >> 8) & 0xff; | |
960 | arr[num++] = target_dev_id & 0xff; | |
961 | /* SCSI name string: Target device identifier */ | |
962 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ | |
963 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ | |
964 | arr[num++] = 0x0; | |
965 | arr[num++] = 24; | |
966 | memcpy(arr + num, "naa.52222220", 12); | |
967 | num += 12; | |
968 | snprintf(b, sizeof(b), "%08X", target_dev_id); | |
969 | memcpy(arr + num, b, 8); | |
970 | num += 8; | |
971 | memset(arr + num, 0, 4); | |
972 | num += 4; | |
973 | return num; | |
974 | } | |
975 | ||
976 | ||
977 | static unsigned char vpd84_data[] = { | |
978 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, | |
979 | 0x22,0x22,0x22,0x0,0xbb,0x1, | |
980 | 0x22,0x22,0x22,0x0,0xbb,0x2, | |
981 | }; | |
982 | ||
cbf67842 | 983 | /* Software interface identification VPD page */ |
c65b1445 DG |
984 | static int inquiry_evpd_84(unsigned char * arr) |
985 | { | |
986 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); | |
987 | return sizeof(vpd84_data); | |
988 | } | |
989 | ||
cbf67842 | 990 | /* Management network addresses VPD page */ |
c65b1445 DG |
991 | static int inquiry_evpd_85(unsigned char * arr) |
992 | { | |
993 | int num = 0; | |
994 | const char * na1 = "https://www.kernel.org/config"; | |
995 | const char * na2 = "http://www.kernel.org/log"; | |
996 | int plen, olen; | |
997 | ||
998 | arr[num++] = 0x1; /* lu, storage config */ | |
999 | arr[num++] = 0x0; /* reserved */ | |
1000 | arr[num++] = 0x0; | |
1001 | olen = strlen(na1); | |
1002 | plen = olen + 1; | |
1003 | if (plen % 4) | |
1004 | plen = ((plen / 4) + 1) * 4; | |
1005 | arr[num++] = plen; /* length, null termianted, padded */ | |
1006 | memcpy(arr + num, na1, olen); | |
1007 | memset(arr + num + olen, 0, plen - olen); | |
1008 | num += plen; | |
1009 | ||
1010 | arr[num++] = 0x4; /* lu, logging */ | |
1011 | arr[num++] = 0x0; /* reserved */ | |
1012 | arr[num++] = 0x0; | |
1013 | olen = strlen(na2); | |
1014 | plen = olen + 1; | |
1015 | if (plen % 4) | |
1016 | plen = ((plen / 4) + 1) * 4; | |
1017 | arr[num++] = plen; /* length, null terminated, padded */ | |
1018 | memcpy(arr + num, na2, olen); | |
1019 | memset(arr + num + olen, 0, plen - olen); | |
1020 | num += plen; | |
1021 | ||
1022 | return num; | |
1023 | } | |
1024 | ||
1025 | /* SCSI ports VPD page */ | |
1026 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) | |
1027 | { | |
1028 | int num = 0; | |
1029 | int port_a, port_b; | |
1030 | ||
1031 | port_a = target_dev_id + 1; | |
1032 | port_b = port_a + 1; | |
1033 | arr[num++] = 0x0; /* reserved */ | |
1034 | arr[num++] = 0x0; /* reserved */ | |
1035 | arr[num++] = 0x0; | |
1036 | arr[num++] = 0x1; /* relative port 1 (primary) */ | |
1037 | memset(arr + num, 0, 6); | |
1038 | num += 6; | |
1039 | arr[num++] = 0x0; | |
1040 | arr[num++] = 12; /* length tp descriptor */ | |
1041 | /* naa-5 target port identifier (A) */ | |
1042 | arr[num++] = 0x61; /* proto=sas, binary */ | |
1043 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
1044 | arr[num++] = 0x0; /* reserved */ | |
1045 | arr[num++] = 0x8; /* length */ | |
1046 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
1047 | arr[num++] = 0x22; | |
1048 | arr[num++] = 0x22; | |
1049 | arr[num++] = 0x20; | |
1050 | arr[num++] = (port_a >> 24); | |
1051 | arr[num++] = (port_a >> 16) & 0xff; | |
1052 | arr[num++] = (port_a >> 8) & 0xff; | |
1053 | arr[num++] = port_a & 0xff; | |
1054 | ||
1055 | arr[num++] = 0x0; /* reserved */ | |
1056 | arr[num++] = 0x0; /* reserved */ | |
1057 | arr[num++] = 0x0; | |
1058 | arr[num++] = 0x2; /* relative port 2 (secondary) */ | |
1059 | memset(arr + num, 0, 6); | |
1060 | num += 6; | |
1061 | arr[num++] = 0x0; | |
1062 | arr[num++] = 12; /* length tp descriptor */ | |
1063 | /* naa-5 target port identifier (B) */ | |
1064 | arr[num++] = 0x61; /* proto=sas, binary */ | |
1065 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
1066 | arr[num++] = 0x0; /* reserved */ | |
1067 | arr[num++] = 0x8; /* length */ | |
1068 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
1069 | arr[num++] = 0x22; | |
1070 | arr[num++] = 0x22; | |
1071 | arr[num++] = 0x20; | |
1072 | arr[num++] = (port_b >> 24); | |
1073 | arr[num++] = (port_b >> 16) & 0xff; | |
1074 | arr[num++] = (port_b >> 8) & 0xff; | |
1075 | arr[num++] = port_b & 0xff; | |
1076 | ||
1077 | return num; | |
1078 | } | |
1079 | ||
1080 | ||
1081 | static unsigned char vpd89_data[] = { | |
1082 | /* from 4th byte */ 0,0,0,0, | |
1083 | 'l','i','n','u','x',' ',' ',' ', | |
1084 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', | |
1085 | '1','2','3','4', | |
1086 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, | |
1087 | 0xec,0,0,0, | |
1088 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, | |
1089 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, | |
1090 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, | |
1091 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, | |
1092 | 0x53,0x41, | |
1093 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
1094 | 0x20,0x20, | |
1095 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
1096 | 0x10,0x80, | |
1097 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, | |
1098 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, | |
1099 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, | |
1100 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, | |
1101 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, | |
1102 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, | |
1103 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, | |
1104 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1105 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1106 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1107 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, | |
1108 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, | |
1109 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, | |
1110 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, | |
1111 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1112 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1113 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1114 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1115 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1116 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1117 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1118 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1119 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1120 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1121 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1122 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, | |
1123 | }; | |
1124 | ||
cbf67842 | 1125 | /* ATA Information VPD page */ |
c65b1445 DG |
1126 | static int inquiry_evpd_89(unsigned char * arr) |
1127 | { | |
1128 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); | |
1129 | return sizeof(vpd89_data); | |
1130 | } | |
1131 | ||
1132 | ||
1133 | static unsigned char vpdb0_data[] = { | |
1e49f785 DG |
1134 | /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64, |
1135 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1136 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1137 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
c65b1445 DG |
1138 | }; |
1139 | ||
cbf67842 | 1140 | /* Block limits VPD page (SBC-3) */ |
c65b1445 DG |
1141 | static int inquiry_evpd_b0(unsigned char * arr) |
1142 | { | |
ea61fca5 MP |
1143 | unsigned int gran; |
1144 | ||
c65b1445 | 1145 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
e308b3d1 MP |
1146 | |
1147 | /* Optimal transfer length granularity */ | |
ea61fca5 MP |
1148 | gran = 1 << scsi_debug_physblk_exp; |
1149 | arr[2] = (gran >> 8) & 0xff; | |
1150 | arr[3] = gran & 0xff; | |
e308b3d1 MP |
1151 | |
1152 | /* Maximum Transfer Length */ | |
c65b1445 DG |
1153 | if (sdebug_store_sectors > 0x400) { |
1154 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; | |
1155 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; | |
1156 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; | |
1157 | arr[7] = sdebug_store_sectors & 0xff; | |
1158 | } | |
44d92694 | 1159 | |
e308b3d1 MP |
1160 | /* Optimal Transfer Length */ |
1161 | put_unaligned_be32(scsi_debug_opt_blks, &arr[8]); | |
1162 | ||
5b94e232 | 1163 | if (scsi_debug_lbpu) { |
e308b3d1 | 1164 | /* Maximum Unmap LBA Count */ |
6014759c | 1165 | put_unaligned_be32(scsi_debug_unmap_max_blocks, &arr[16]); |
e308b3d1 MP |
1166 | |
1167 | /* Maximum Unmap Block Descriptor Count */ | |
44d92694 MP |
1168 | put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]); |
1169 | } | |
1170 | ||
e308b3d1 | 1171 | /* Unmap Granularity Alignment */ |
44d92694 MP |
1172 | if (scsi_debug_unmap_alignment) { |
1173 | put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]); | |
1174 | arr[28] |= 0x80; /* UGAVALID */ | |
1175 | } | |
1176 | ||
e308b3d1 | 1177 | /* Optimal Unmap Granularity */ |
6014759c MP |
1178 | put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]); |
1179 | ||
5b94e232 MP |
1180 | /* Maximum WRITE SAME Length */ |
1181 | put_unaligned_be64(scsi_debug_write_same_length, &arr[32]); | |
1182 | ||
1183 | return 0x3c; /* Mandatory page length for Logical Block Provisioning */ | |
44d92694 | 1184 | |
c65b1445 | 1185 | return sizeof(vpdb0_data); |
1da177e4 LT |
1186 | } |
1187 | ||
1e49f785 | 1188 | /* Block device characteristics VPD page (SBC-3) */ |
eac6e8e4 MW |
1189 | static int inquiry_evpd_b1(unsigned char *arr) |
1190 | { | |
1191 | memset(arr, 0, 0x3c); | |
1192 | arr[0] = 0; | |
1e49f785 DG |
1193 | arr[1] = 1; /* non rotating medium (e.g. solid state) */ |
1194 | arr[2] = 0; | |
1195 | arr[3] = 5; /* less than 1.8" */ | |
eac6e8e4 MW |
1196 | |
1197 | return 0x3c; | |
1198 | } | |
1da177e4 | 1199 | |
be1dd78d | 1200 | /* Logical block provisioning VPD page (SBC-3) */ |
6014759c MP |
1201 | static int inquiry_evpd_b2(unsigned char *arr) |
1202 | { | |
3f0bc3b3 | 1203 | memset(arr, 0, 0x4); |
6014759c MP |
1204 | arr[0] = 0; /* threshold exponent */ |
1205 | ||
5b94e232 | 1206 | if (scsi_debug_lbpu) |
6014759c MP |
1207 | arr[1] = 1 << 7; |
1208 | ||
5b94e232 | 1209 | if (scsi_debug_lbpws) |
6014759c MP |
1210 | arr[1] |= 1 << 6; |
1211 | ||
5b94e232 MP |
1212 | if (scsi_debug_lbpws10) |
1213 | arr[1] |= 1 << 5; | |
1214 | ||
be1dd78d ES |
1215 | if (scsi_debug_lbprz) |
1216 | arr[1] |= 1 << 2; | |
1217 | ||
3f0bc3b3 | 1218 | return 0x4; |
6014759c MP |
1219 | } |
1220 | ||
1da177e4 | 1221 | #define SDEBUG_LONG_INQ_SZ 96 |
c65b1445 | 1222 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
1da177e4 | 1223 | |
c2248fc9 | 1224 | static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
1da177e4 LT |
1225 | { |
1226 | unsigned char pq_pdt; | |
5a09e398 | 1227 | unsigned char * arr; |
01123ef4 | 1228 | unsigned char *cmd = scp->cmnd; |
5a09e398 | 1229 | int alloc_len, n, ret; |
c2248fc9 | 1230 | bool have_wlun; |
1da177e4 LT |
1231 | |
1232 | alloc_len = (cmd[3] << 8) + cmd[4]; | |
6f3cbf55 DG |
1233 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
1234 | if (! arr) | |
1235 | return DID_REQUEUE << 16; | |
c2248fc9 DG |
1236 | have_wlun = (scp->device->lun == SAM2_WLUN_REPORT_LUNS); |
1237 | if (have_wlun) | |
c65b1445 DG |
1238 | pq_pdt = 0x1e; /* present, wlun */ |
1239 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) | |
1240 | pq_pdt = 0x7f; /* not present, no device type */ | |
1241 | else | |
1242 | pq_pdt = (scsi_debug_ptype & 0x1f); | |
1da177e4 LT |
1243 | arr[0] = pq_pdt; |
1244 | if (0x2 & cmd[1]) { /* CMDDT bit set */ | |
22017ed2 | 1245 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 1); |
5a09e398 | 1246 | kfree(arr); |
1da177e4 LT |
1247 | return check_condition_result; |
1248 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ | |
5a09e398 | 1249 | int lu_id_num, port_group_id, target_dev_id, len; |
c65b1445 DG |
1250 | char lu_id_str[6]; |
1251 | int host_no = devip->sdbg_host->shost->host_no; | |
1da177e4 | 1252 | |
5a09e398 HR |
1253 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
1254 | (devip->channel & 0x7f); | |
23183910 DG |
1255 | if (0 == scsi_debug_vpd_use_hostno) |
1256 | host_no = 0; | |
c2248fc9 | 1257 | lu_id_num = have_wlun ? -1 : (((host_no + 1) * 2000) + |
c65b1445 DG |
1258 | (devip->target * 1000) + devip->lun); |
1259 | target_dev_id = ((host_no + 1) * 2000) + | |
1260 | (devip->target * 1000) - 3; | |
1261 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); | |
1da177e4 | 1262 | if (0 == cmd[2]) { /* supported vital product data pages */ |
c65b1445 DG |
1263 | arr[1] = cmd[2]; /*sanity */ |
1264 | n = 4; | |
1265 | arr[n++] = 0x0; /* this page */ | |
1266 | arr[n++] = 0x80; /* unit serial number */ | |
1267 | arr[n++] = 0x83; /* device identification */ | |
1268 | arr[n++] = 0x84; /* software interface ident. */ | |
1269 | arr[n++] = 0x85; /* management network addresses */ | |
1270 | arr[n++] = 0x86; /* extended inquiry */ | |
1271 | arr[n++] = 0x87; /* mode page policy */ | |
1272 | arr[n++] = 0x88; /* SCSI ports */ | |
1273 | arr[n++] = 0x89; /* ATA information */ | |
1274 | arr[n++] = 0xb0; /* Block limits (SBC) */ | |
eac6e8e4 | 1275 | arr[n++] = 0xb1; /* Block characteristics (SBC) */ |
5b94e232 MP |
1276 | if (scsi_debug_lbp()) /* Logical Block Prov. (SBC) */ |
1277 | arr[n++] = 0xb2; | |
c65b1445 | 1278 | arr[3] = n - 4; /* number of supported VPD pages */ |
1da177e4 | 1279 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
c65b1445 | 1280 | arr[1] = cmd[2]; /*sanity */ |
1da177e4 | 1281 | arr[3] = len; |
c65b1445 | 1282 | memcpy(&arr[4], lu_id_str, len); |
1da177e4 | 1283 | } else if (0x83 == cmd[2]) { /* device identification */ |
c65b1445 | 1284 | arr[1] = cmd[2]; /*sanity */ |
5a09e398 HR |
1285 | arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
1286 | target_dev_id, lu_id_num, | |
1287 | lu_id_str, len); | |
c65b1445 DG |
1288 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
1289 | arr[1] = cmd[2]; /*sanity */ | |
1290 | arr[3] = inquiry_evpd_84(&arr[4]); | |
1291 | } else if (0x85 == cmd[2]) { /* Management network addresses */ | |
1292 | arr[1] = cmd[2]; /*sanity */ | |
1293 | arr[3] = inquiry_evpd_85(&arr[4]); | |
1294 | } else if (0x86 == cmd[2]) { /* extended inquiry */ | |
1295 | arr[1] = cmd[2]; /*sanity */ | |
1296 | arr[3] = 0x3c; /* number of following entries */ | |
c6a44287 MP |
1297 | if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) |
1298 | arr[4] = 0x4; /* SPT: GRD_CHK:1 */ | |
1299 | else if (scsi_debug_dif) | |
1300 | arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ | |
1301 | else | |
1302 | arr[4] = 0x0; /* no protection stuff */ | |
c65b1445 DG |
1303 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
1304 | } else if (0x87 == cmd[2]) { /* mode page policy */ | |
1305 | arr[1] = cmd[2]; /*sanity */ | |
1306 | arr[3] = 0x8; /* number of following entries */ | |
1307 | arr[4] = 0x2; /* disconnect-reconnect mp */ | |
1308 | arr[6] = 0x80; /* mlus, shared */ | |
1309 | arr[8] = 0x18; /* protocol specific lu */ | |
1310 | arr[10] = 0x82; /* mlus, per initiator port */ | |
1311 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ | |
1312 | arr[1] = cmd[2]; /*sanity */ | |
1313 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); | |
1314 | } else if (0x89 == cmd[2]) { /* ATA information */ | |
1315 | arr[1] = cmd[2]; /*sanity */ | |
1316 | n = inquiry_evpd_89(&arr[4]); | |
1317 | arr[2] = (n >> 8); | |
1318 | arr[3] = (n & 0xff); | |
1319 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ | |
1320 | arr[1] = cmd[2]; /*sanity */ | |
1321 | arr[3] = inquiry_evpd_b0(&arr[4]); | |
eac6e8e4 MW |
1322 | } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */ |
1323 | arr[1] = cmd[2]; /*sanity */ | |
1324 | arr[3] = inquiry_evpd_b1(&arr[4]); | |
5b94e232 | 1325 | } else if (0xb2 == cmd[2]) { /* Logical Block Prov. (SBC) */ |
6014759c MP |
1326 | arr[1] = cmd[2]; /*sanity */ |
1327 | arr[3] = inquiry_evpd_b2(&arr[4]); | |
1da177e4 | 1328 | } else { |
22017ed2 | 1329 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); |
5a09e398 | 1330 | kfree(arr); |
1da177e4 LT |
1331 | return check_condition_result; |
1332 | } | |
c65b1445 | 1333 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
5a09e398 | 1334 | ret = fill_from_dev_buffer(scp, arr, |
c65b1445 | 1335 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
5a09e398 HR |
1336 | kfree(arr); |
1337 | return ret; | |
1da177e4 LT |
1338 | } |
1339 | /* drops through here for a standard inquiry */ | |
d986788b | 1340 | arr[1] = scsi_debug_removable ? 0x80 : 0; /* Removable disk */ |
1da177e4 LT |
1341 | arr[2] = scsi_debug_scsi_level; |
1342 | arr[3] = 2; /* response_data_format==2 */ | |
1343 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; | |
c6a44287 | 1344 | arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */ |
5a09e398 HR |
1345 | if (0 == scsi_debug_vpd_use_hostno) |
1346 | arr[5] = 0x10; /* claim: implicit TGPS */ | |
c65b1445 | 1347 | arr[6] = 0x10; /* claim: MultiP */ |
1da177e4 | 1348 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
c65b1445 | 1349 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
1da177e4 LT |
1350 | memcpy(&arr[8], inq_vendor_id, 8); |
1351 | memcpy(&arr[16], inq_product_id, 16); | |
1352 | memcpy(&arr[32], inq_product_rev, 4); | |
1353 | /* version descriptors (2 bytes each) follow */ | |
e46b0344 DG |
1354 | arr[58] = 0x0; arr[59] = 0xa2; /* SAM-5 rev 4 */ |
1355 | arr[60] = 0x4; arr[61] = 0x68; /* SPC-4 rev 37 */ | |
c65b1445 | 1356 | n = 62; |
1da177e4 | 1357 | if (scsi_debug_ptype == 0) { |
e46b0344 | 1358 | arr[n++] = 0x4; arr[n++] = 0xc5; /* SBC-4 rev 36 */ |
1da177e4 | 1359 | } else if (scsi_debug_ptype == 1) { |
e46b0344 | 1360 | arr[n++] = 0x5; arr[n++] = 0x25; /* SSC-4 rev 3 */ |
1da177e4 | 1361 | } |
e46b0344 | 1362 | arr[n++] = 0x20; arr[n++] = 0xe6; /* SPL-3 rev 7 */ |
5a09e398 | 1363 | ret = fill_from_dev_buffer(scp, arr, |
1da177e4 | 1364 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
5a09e398 HR |
1365 | kfree(arr); |
1366 | return ret; | |
1da177e4 LT |
1367 | } |
1368 | ||
1369 | static int resp_requests(struct scsi_cmnd * scp, | |
1370 | struct sdebug_dev_info * devip) | |
1371 | { | |
1372 | unsigned char * sbuff; | |
01123ef4 | 1373 | unsigned char *cmd = scp->cmnd; |
cbf67842 | 1374 | unsigned char arr[SCSI_SENSE_BUFFERSIZE]; |
c2248fc9 | 1375 | bool dsense, want_dsense; |
1da177e4 LT |
1376 | int len = 18; |
1377 | ||
c65b1445 | 1378 | memset(arr, 0, sizeof(arr)); |
c2248fc9 DG |
1379 | dsense = !!(cmd[1] & 1); |
1380 | want_dsense = dsense || scsi_debug_dsense; | |
cbf67842 | 1381 | sbuff = scp->sense_buffer; |
c65b1445 | 1382 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
c2248fc9 | 1383 | if (dsense) { |
c65b1445 DG |
1384 | arr[0] = 0x72; |
1385 | arr[1] = 0x0; /* NO_SENSE in sense_key */ | |
1386 | arr[2] = THRESHOLD_EXCEEDED; | |
1387 | arr[3] = 0xff; /* TEST set and MRIE==6 */ | |
c2248fc9 | 1388 | len = 8; |
c65b1445 DG |
1389 | } else { |
1390 | arr[0] = 0x70; | |
1391 | arr[2] = 0x0; /* NO_SENSE in sense_key */ | |
1392 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
1393 | arr[12] = THRESHOLD_EXCEEDED; | |
1394 | arr[13] = 0xff; /* TEST set and MRIE==6 */ | |
1395 | } | |
c65b1445 | 1396 | } else { |
cbf67842 | 1397 | memcpy(arr, sbuff, SCSI_SENSE_BUFFERSIZE); |
c2248fc9 DG |
1398 | if (arr[0] >= 0x70 && dsense == scsi_debug_dsense) |
1399 | ; /* have sense and formats match */ | |
1400 | else if (arr[0] <= 0x70) { | |
1401 | if (dsense) { | |
1402 | memset(arr, 0, 8); | |
1403 | arr[0] = 0x72; | |
1404 | len = 8; | |
1405 | } else { | |
1406 | memset(arr, 0, 18); | |
1407 | arr[0] = 0x70; | |
1408 | arr[7] = 0xa; | |
1409 | } | |
1410 | } else if (dsense) { | |
1411 | memset(arr, 0, 8); | |
c65b1445 DG |
1412 | arr[0] = 0x72; |
1413 | arr[1] = sbuff[2]; /* sense key */ | |
1414 | arr[2] = sbuff[12]; /* asc */ | |
1415 | arr[3] = sbuff[13]; /* ascq */ | |
1416 | len = 8; | |
c2248fc9 DG |
1417 | } else { |
1418 | memset(arr, 0, 18); | |
1419 | arr[0] = 0x70; | |
1420 | arr[2] = sbuff[1]; | |
1421 | arr[7] = 0xa; | |
1422 | arr[12] = sbuff[1]; | |
1423 | arr[13] = sbuff[3]; | |
c65b1445 | 1424 | } |
c2248fc9 | 1425 | |
c65b1445 | 1426 | } |
cbf67842 | 1427 | mk_sense_buffer(scp, 0, NO_ADDITIONAL_SENSE, 0); |
1da177e4 LT |
1428 | return fill_from_dev_buffer(scp, arr, len); |
1429 | } | |
1430 | ||
c65b1445 DG |
1431 | static int resp_start_stop(struct scsi_cmnd * scp, |
1432 | struct sdebug_dev_info * devip) | |
1433 | { | |
01123ef4 | 1434 | unsigned char *cmd = scp->cmnd; |
c2248fc9 | 1435 | int power_cond, start; |
c65b1445 | 1436 | |
c65b1445 DG |
1437 | power_cond = (cmd[4] & 0xf0) >> 4; |
1438 | if (power_cond) { | |
22017ed2 | 1439 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, 7); |
c65b1445 DG |
1440 | return check_condition_result; |
1441 | } | |
1442 | start = cmd[4] & 1; | |
1443 | if (start == devip->stopped) | |
1444 | devip->stopped = !start; | |
1445 | return 0; | |
1446 | } | |
1447 | ||
28898873 FT |
1448 | static sector_t get_sdebug_capacity(void) |
1449 | { | |
1450 | if (scsi_debug_virtual_gb > 0) | |
5447ed6c DG |
1451 | return (sector_t)scsi_debug_virtual_gb * |
1452 | (1073741824 / scsi_debug_sector_size); | |
28898873 FT |
1453 | else |
1454 | return sdebug_store_sectors; | |
1455 | } | |
1456 | ||
1da177e4 LT |
1457 | #define SDEBUG_READCAP_ARR_SZ 8 |
1458 | static int resp_readcap(struct scsi_cmnd * scp, | |
1459 | struct sdebug_dev_info * devip) | |
1460 | { | |
1461 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; | |
c65b1445 | 1462 | unsigned int capac; |
1da177e4 | 1463 | |
c65b1445 | 1464 | /* following just in case virtual_gb changed */ |
28898873 | 1465 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 | 1466 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
c65b1445 DG |
1467 | if (sdebug_capacity < 0xffffffff) { |
1468 | capac = (unsigned int)sdebug_capacity - 1; | |
1469 | arr[0] = (capac >> 24); | |
1470 | arr[1] = (capac >> 16) & 0xff; | |
1471 | arr[2] = (capac >> 8) & 0xff; | |
1472 | arr[3] = capac & 0xff; | |
1473 | } else { | |
1474 | arr[0] = 0xff; | |
1475 | arr[1] = 0xff; | |
1476 | arr[2] = 0xff; | |
1477 | arr[3] = 0xff; | |
1478 | } | |
597136ab MP |
1479 | arr[6] = (scsi_debug_sector_size >> 8) & 0xff; |
1480 | arr[7] = scsi_debug_sector_size & 0xff; | |
1da177e4 LT |
1481 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
1482 | } | |
1483 | ||
c65b1445 DG |
1484 | #define SDEBUG_READCAP16_ARR_SZ 32 |
1485 | static int resp_readcap16(struct scsi_cmnd * scp, | |
1486 | struct sdebug_dev_info * devip) | |
1487 | { | |
01123ef4 | 1488 | unsigned char *cmd = scp->cmnd; |
c65b1445 DG |
1489 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; |
1490 | unsigned long long capac; | |
c2248fc9 | 1491 | int k, alloc_len; |
c65b1445 | 1492 | |
c65b1445 DG |
1493 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) |
1494 | + cmd[13]); | |
1495 | /* following just in case virtual_gb changed */ | |
28898873 | 1496 | sdebug_capacity = get_sdebug_capacity(); |
c65b1445 DG |
1497 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
1498 | capac = sdebug_capacity - 1; | |
1499 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1500 | arr[7 - k] = capac & 0xff; | |
597136ab MP |
1501 | arr[8] = (scsi_debug_sector_size >> 24) & 0xff; |
1502 | arr[9] = (scsi_debug_sector_size >> 16) & 0xff; | |
1503 | arr[10] = (scsi_debug_sector_size >> 8) & 0xff; | |
1504 | arr[11] = scsi_debug_sector_size & 0xff; | |
ea61fca5 MP |
1505 | arr[13] = scsi_debug_physblk_exp & 0xf; |
1506 | arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f; | |
44d92694 | 1507 | |
be1dd78d | 1508 | if (scsi_debug_lbp()) { |
5b94e232 | 1509 | arr[14] |= 0x80; /* LBPME */ |
be1dd78d ES |
1510 | if (scsi_debug_lbprz) |
1511 | arr[14] |= 0x40; /* LBPRZ */ | |
1512 | } | |
44d92694 | 1513 | |
ea61fca5 | 1514 | arr[15] = scsi_debug_lowest_aligned & 0xff; |
c6a44287 MP |
1515 | |
1516 | if (scsi_debug_dif) { | |
1517 | arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */ | |
1518 | arr[12] |= 1; /* PROT_EN */ | |
1519 | } | |
1520 | ||
c65b1445 DG |
1521 | return fill_from_dev_buffer(scp, arr, |
1522 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); | |
1523 | } | |
1524 | ||
5a09e398 HR |
1525 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
1526 | ||
1527 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, | |
1528 | struct sdebug_dev_info * devip) | |
1529 | { | |
01123ef4 | 1530 | unsigned char *cmd = scp->cmnd; |
5a09e398 HR |
1531 | unsigned char * arr; |
1532 | int host_no = devip->sdbg_host->shost->host_no; | |
1533 | int n, ret, alen, rlen; | |
1534 | int port_group_a, port_group_b, port_a, port_b; | |
1535 | ||
1536 | alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) | |
1537 | + cmd[9]); | |
1538 | ||
6f3cbf55 DG |
1539 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
1540 | if (! arr) | |
1541 | return DID_REQUEUE << 16; | |
5a09e398 HR |
1542 | /* |
1543 | * EVPD page 0x88 states we have two ports, one | |
1544 | * real and a fake port with no device connected. | |
1545 | * So we create two port groups with one port each | |
1546 | * and set the group with port B to unavailable. | |
1547 | */ | |
1548 | port_a = 0x1; /* relative port A */ | |
1549 | port_b = 0x2; /* relative port B */ | |
1550 | port_group_a = (((host_no + 1) & 0x7f) << 8) + | |
1551 | (devip->channel & 0x7f); | |
1552 | port_group_b = (((host_no + 1) & 0x7f) << 8) + | |
1553 | (devip->channel & 0x7f) + 0x80; | |
1554 | ||
1555 | /* | |
1556 | * The asymmetric access state is cycled according to the host_id. | |
1557 | */ | |
1558 | n = 4; | |
1559 | if (0 == scsi_debug_vpd_use_hostno) { | |
1560 | arr[n++] = host_no % 3; /* Asymm access state */ | |
1561 | arr[n++] = 0x0F; /* claim: all states are supported */ | |
1562 | } else { | |
1563 | arr[n++] = 0x0; /* Active/Optimized path */ | |
1564 | arr[n++] = 0x01; /* claim: only support active/optimized paths */ | |
1565 | } | |
1566 | arr[n++] = (port_group_a >> 8) & 0xff; | |
1567 | arr[n++] = port_group_a & 0xff; | |
1568 | arr[n++] = 0; /* Reserved */ | |
1569 | arr[n++] = 0; /* Status code */ | |
1570 | arr[n++] = 0; /* Vendor unique */ | |
1571 | arr[n++] = 0x1; /* One port per group */ | |
1572 | arr[n++] = 0; /* Reserved */ | |
1573 | arr[n++] = 0; /* Reserved */ | |
1574 | arr[n++] = (port_a >> 8) & 0xff; | |
1575 | arr[n++] = port_a & 0xff; | |
1576 | arr[n++] = 3; /* Port unavailable */ | |
1577 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ | |
1578 | arr[n++] = (port_group_b >> 8) & 0xff; | |
1579 | arr[n++] = port_group_b & 0xff; | |
1580 | arr[n++] = 0; /* Reserved */ | |
1581 | arr[n++] = 0; /* Status code */ | |
1582 | arr[n++] = 0; /* Vendor unique */ | |
1583 | arr[n++] = 0x1; /* One port per group */ | |
1584 | arr[n++] = 0; /* Reserved */ | |
1585 | arr[n++] = 0; /* Reserved */ | |
1586 | arr[n++] = (port_b >> 8) & 0xff; | |
1587 | arr[n++] = port_b & 0xff; | |
1588 | ||
1589 | rlen = n - 4; | |
1590 | arr[0] = (rlen >> 24) & 0xff; | |
1591 | arr[1] = (rlen >> 16) & 0xff; | |
1592 | arr[2] = (rlen >> 8) & 0xff; | |
1593 | arr[3] = rlen & 0xff; | |
1594 | ||
1595 | /* | |
1596 | * Return the smallest value of either | |
1597 | * - The allocated length | |
1598 | * - The constructed command length | |
1599 | * - The maximum array size | |
1600 | */ | |
1601 | rlen = min(alen,n); | |
1602 | ret = fill_from_dev_buffer(scp, arr, | |
1603 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); | |
1604 | kfree(arr); | |
1605 | return ret; | |
1606 | } | |
1607 | ||
38d5c833 DG |
1608 | static int |
1609 | resp_rsup_opcodes(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
1610 | { | |
1611 | bool rctd; | |
1612 | u8 reporting_opts, req_opcode, sdeb_i, supp; | |
1613 | u16 req_sa, u; | |
1614 | u32 alloc_len, a_len; | |
1615 | int k, offset, len, errsts, count, bump, na; | |
1616 | const struct opcode_info_t *oip; | |
1617 | const struct opcode_info_t *r_oip; | |
1618 | u8 *arr; | |
1619 | u8 *cmd = scp->cmnd; | |
1620 | ||
1621 | rctd = !!(cmd[2] & 0x80); | |
1622 | reporting_opts = cmd[2] & 0x7; | |
1623 | req_opcode = cmd[3]; | |
1624 | req_sa = get_unaligned_be16(cmd + 4); | |
1625 | alloc_len = get_unaligned_be32(cmd + 6); | |
1626 | if (alloc_len < 4 && alloc_len > 0xffff) { | |
1627 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); | |
1628 | return check_condition_result; | |
1629 | } | |
1630 | if (alloc_len > 8192) | |
1631 | a_len = 8192; | |
1632 | else | |
1633 | a_len = alloc_len; | |
99531e60 | 1634 | arr = kzalloc((a_len < 256) ? 320 : a_len + 64, GFP_ATOMIC); |
38d5c833 DG |
1635 | if (NULL == arr) { |
1636 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
1637 | INSUFF_RES_ASCQ); | |
1638 | return check_condition_result; | |
1639 | } | |
1640 | switch (reporting_opts) { | |
1641 | case 0: /* all commands */ | |
1642 | /* count number of commands */ | |
1643 | for (count = 0, oip = opcode_info_arr; | |
1644 | oip->num_attached != 0xff; ++oip) { | |
1645 | if (F_INV_OP & oip->flags) | |
1646 | continue; | |
1647 | count += (oip->num_attached + 1); | |
1648 | } | |
1649 | bump = rctd ? 20 : 8; | |
1650 | put_unaligned_be32(count * bump, arr); | |
1651 | for (offset = 4, oip = opcode_info_arr; | |
1652 | oip->num_attached != 0xff && offset < a_len; ++oip) { | |
1653 | if (F_INV_OP & oip->flags) | |
1654 | continue; | |
1655 | na = oip->num_attached; | |
1656 | arr[offset] = oip->opcode; | |
1657 | put_unaligned_be16(oip->sa, arr + offset + 2); | |
1658 | if (rctd) | |
1659 | arr[offset + 5] |= 0x2; | |
1660 | if (FF_SA & oip->flags) | |
1661 | arr[offset + 5] |= 0x1; | |
1662 | put_unaligned_be16(oip->len_mask[0], arr + offset + 6); | |
1663 | if (rctd) | |
1664 | put_unaligned_be16(0xa, arr + offset + 8); | |
1665 | r_oip = oip; | |
1666 | for (k = 0, oip = oip->arrp; k < na; ++k, ++oip) { | |
1667 | if (F_INV_OP & oip->flags) | |
1668 | continue; | |
1669 | offset += bump; | |
1670 | arr[offset] = oip->opcode; | |
1671 | put_unaligned_be16(oip->sa, arr + offset + 2); | |
1672 | if (rctd) | |
1673 | arr[offset + 5] |= 0x2; | |
1674 | if (FF_SA & oip->flags) | |
1675 | arr[offset + 5] |= 0x1; | |
1676 | put_unaligned_be16(oip->len_mask[0], | |
1677 | arr + offset + 6); | |
1678 | if (rctd) | |
1679 | put_unaligned_be16(0xa, | |
1680 | arr + offset + 8); | |
1681 | } | |
1682 | oip = r_oip; | |
1683 | offset += bump; | |
1684 | } | |
1685 | break; | |
1686 | case 1: /* one command: opcode only */ | |
1687 | case 2: /* one command: opcode plus service action */ | |
1688 | case 3: /* one command: if sa==0 then opcode only else opcode+sa */ | |
1689 | sdeb_i = opcode_ind_arr[req_opcode]; | |
1690 | oip = &opcode_info_arr[sdeb_i]; | |
1691 | if (F_INV_OP & oip->flags) { | |
1692 | supp = 1; | |
1693 | offset = 4; | |
1694 | } else { | |
1695 | if (1 == reporting_opts) { | |
1696 | if (FF_SA & oip->flags) { | |
1697 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, | |
1698 | 2, 2); | |
1699 | kfree(arr); | |
1700 | return check_condition_result; | |
1701 | } | |
1702 | req_sa = 0; | |
1703 | } else if (2 == reporting_opts && | |
1704 | 0 == (FF_SA & oip->flags)) { | |
1705 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, -1); | |
1706 | kfree(arr); /* point at requested sa */ | |
1707 | return check_condition_result; | |
1708 | } | |
1709 | if (0 == (FF_SA & oip->flags) && | |
1710 | req_opcode == oip->opcode) | |
1711 | supp = 3; | |
1712 | else if (0 == (FF_SA & oip->flags)) { | |
1713 | na = oip->num_attached; | |
1714 | for (k = 0, oip = oip->arrp; k < na; | |
1715 | ++k, ++oip) { | |
1716 | if (req_opcode == oip->opcode) | |
1717 | break; | |
1718 | } | |
1719 | supp = (k >= na) ? 1 : 3; | |
1720 | } else if (req_sa != oip->sa) { | |
1721 | na = oip->num_attached; | |
1722 | for (k = 0, oip = oip->arrp; k < na; | |
1723 | ++k, ++oip) { | |
1724 | if (req_sa == oip->sa) | |
1725 | break; | |
1726 | } | |
1727 | supp = (k >= na) ? 1 : 3; | |
1728 | } else | |
1729 | supp = 3; | |
1730 | if (3 == supp) { | |
1731 | u = oip->len_mask[0]; | |
1732 | put_unaligned_be16(u, arr + 2); | |
1733 | arr[4] = oip->opcode; | |
1734 | for (k = 1; k < u; ++k) | |
1735 | arr[4 + k] = (k < 16) ? | |
1736 | oip->len_mask[k] : 0xff; | |
1737 | offset = 4 + u; | |
1738 | } else | |
1739 | offset = 4; | |
1740 | } | |
1741 | arr[1] = (rctd ? 0x80 : 0) | supp; | |
1742 | if (rctd) { | |
1743 | put_unaligned_be16(0xa, arr + offset); | |
1744 | offset += 12; | |
1745 | } | |
1746 | break; | |
1747 | default: | |
1748 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 2); | |
1749 | kfree(arr); | |
1750 | return check_condition_result; | |
1751 | } | |
1752 | offset = (offset < a_len) ? offset : a_len; | |
1753 | len = (offset < alloc_len) ? offset : alloc_len; | |
1754 | errsts = fill_from_dev_buffer(scp, arr, len); | |
1755 | kfree(arr); | |
1756 | return errsts; | |
1757 | } | |
1758 | ||
1759 | static int | |
1760 | resp_rsup_tmfs(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
1761 | { | |
1762 | bool repd; | |
1763 | u32 alloc_len, len; | |
1764 | u8 arr[16]; | |
1765 | u8 *cmd = scp->cmnd; | |
1766 | ||
1767 | memset(arr, 0, sizeof(arr)); | |
1768 | repd = !!(cmd[2] & 0x80); | |
1769 | alloc_len = get_unaligned_be32(cmd + 6); | |
1770 | if (alloc_len < 4) { | |
1771 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); | |
1772 | return check_condition_result; | |
1773 | } | |
1774 | arr[0] = 0xc8; /* ATS | ATSS | LURS */ | |
1775 | arr[1] = 0x1; /* ITNRS */ | |
1776 | if (repd) { | |
1777 | arr[3] = 0xc; | |
1778 | len = 16; | |
1779 | } else | |
1780 | len = 4; | |
1781 | ||
1782 | len = (len < alloc_len) ? len : alloc_len; | |
1783 | return fill_from_dev_buffer(scp, arr, len); | |
1784 | } | |
1785 | ||
1da177e4 LT |
1786 | /* <<Following mode page info copied from ST318451LW>> */ |
1787 | ||
1788 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) | |
1789 | { /* Read-Write Error Recovery page for mode_sense */ | |
1790 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, | |
1791 | 5, 0, 0xff, 0xff}; | |
1792 | ||
1793 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); | |
1794 | if (1 == pcontrol) | |
1795 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); | |
1796 | return sizeof(err_recov_pg); | |
1797 | } | |
1798 | ||
1799 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) | |
1800 | { /* Disconnect-Reconnect page for mode_sense */ | |
1801 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, | |
1802 | 0, 0, 0, 0, 0, 0, 0, 0}; | |
1803 | ||
1804 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); | |
1805 | if (1 == pcontrol) | |
1806 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); | |
1807 | return sizeof(disconnect_pg); | |
1808 | } | |
1809 | ||
1810 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) | |
1811 | { /* Format device page for mode_sense */ | |
597136ab MP |
1812 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
1813 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1814 | 0, 0, 0, 0, 0x40, 0, 0, 0}; | |
1815 | ||
1816 | memcpy(p, format_pg, sizeof(format_pg)); | |
1817 | p[10] = (sdebug_sectors_per >> 8) & 0xff; | |
1818 | p[11] = sdebug_sectors_per & 0xff; | |
1819 | p[12] = (scsi_debug_sector_size >> 8) & 0xff; | |
1820 | p[13] = scsi_debug_sector_size & 0xff; | |
d986788b | 1821 | if (scsi_debug_removable) |
597136ab MP |
1822 | p[20] |= 0x20; /* should agree with INQUIRY */ |
1823 | if (1 == pcontrol) | |
1824 | memset(p + 2, 0, sizeof(format_pg) - 2); | |
1825 | return sizeof(format_pg); | |
1da177e4 LT |
1826 | } |
1827 | ||
1828 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) | |
1829 | { /* Caching page for mode_sense */ | |
cbf67842 DG |
1830 | unsigned char ch_caching_pg[] = {/* 0x8, 18, */ 0x4, 0, 0, 0, 0, 0, |
1831 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; | |
1832 | unsigned char d_caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
1da177e4 LT |
1833 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; |
1834 | ||
cbf67842 DG |
1835 | if (SCSI_DEBUG_OPT_N_WCE & scsi_debug_opts) |
1836 | caching_pg[2] &= ~0x4; /* set WCE=0 (default WCE=1) */ | |
1da177e4 LT |
1837 | memcpy(p, caching_pg, sizeof(caching_pg)); |
1838 | if (1 == pcontrol) | |
cbf67842 DG |
1839 | memcpy(p + 2, ch_caching_pg, sizeof(ch_caching_pg)); |
1840 | else if (2 == pcontrol) | |
1841 | memcpy(p, d_caching_pg, sizeof(d_caching_pg)); | |
1da177e4 LT |
1842 | return sizeof(caching_pg); |
1843 | } | |
1844 | ||
1845 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) | |
1846 | { /* Control mode page for mode_sense */ | |
c65b1445 DG |
1847 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
1848 | 0, 0, 0, 0}; | |
1849 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, | |
1da177e4 LT |
1850 | 0, 0, 0x2, 0x4b}; |
1851 | ||
1852 | if (scsi_debug_dsense) | |
1853 | ctrl_m_pg[2] |= 0x4; | |
c65b1445 DG |
1854 | else |
1855 | ctrl_m_pg[2] &= ~0x4; | |
c6a44287 MP |
1856 | |
1857 | if (scsi_debug_ato) | |
1858 | ctrl_m_pg[5] |= 0x80; /* ATO=1 */ | |
1859 | ||
1da177e4 LT |
1860 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
1861 | if (1 == pcontrol) | |
c65b1445 DG |
1862 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
1863 | else if (2 == pcontrol) | |
1864 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); | |
1da177e4 LT |
1865 | return sizeof(ctrl_m_pg); |
1866 | } | |
1867 | ||
c65b1445 | 1868 | |
1da177e4 LT |
1869 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
1870 | { /* Informational Exceptions control mode page for mode_sense */ | |
c65b1445 DG |
1871 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
1872 | 0, 0, 0x0, 0x0}; | |
1873 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
1874 | 0, 0, 0x0, 0x0}; | |
1875 | ||
1da177e4 LT |
1876 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
1877 | if (1 == pcontrol) | |
c65b1445 DG |
1878 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
1879 | else if (2 == pcontrol) | |
1880 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); | |
1da177e4 LT |
1881 | return sizeof(iec_m_pg); |
1882 | } | |
1883 | ||
c65b1445 DG |
1884 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
1885 | { /* SAS SSP mode page - short format for mode_sense */ | |
1886 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, | |
1887 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; | |
1888 | ||
1889 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); | |
1890 | if (1 == pcontrol) | |
1891 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); | |
1892 | return sizeof(sas_sf_m_pg); | |
1893 | } | |
1894 | ||
1895 | ||
1896 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, | |
1897 | int target_dev_id) | |
1898 | { /* SAS phy control and discover mode page for mode_sense */ | |
1899 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, | |
1900 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1901 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1902 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1903 | 0x2, 0, 0, 0, 0, 0, 0, 0, | |
1904 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1905 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1906 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1907 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1908 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1909 | 0x3, 0, 0, 0, 0, 0, 0, 0, | |
1910 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1911 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1912 | }; | |
1913 | int port_a, port_b; | |
1914 | ||
1915 | port_a = target_dev_id + 1; | |
1916 | port_b = port_a + 1; | |
1917 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); | |
1918 | p[20] = (port_a >> 24); | |
1919 | p[21] = (port_a >> 16) & 0xff; | |
1920 | p[22] = (port_a >> 8) & 0xff; | |
1921 | p[23] = port_a & 0xff; | |
1922 | p[48 + 20] = (port_b >> 24); | |
1923 | p[48 + 21] = (port_b >> 16) & 0xff; | |
1924 | p[48 + 22] = (port_b >> 8) & 0xff; | |
1925 | p[48 + 23] = port_b & 0xff; | |
1926 | if (1 == pcontrol) | |
1927 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); | |
1928 | return sizeof(sas_pcd_m_pg); | |
1929 | } | |
1930 | ||
1931 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) | |
1932 | { /* SAS SSP shared protocol specific port mode subpage */ | |
1933 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, | |
1934 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1935 | }; | |
1936 | ||
1937 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); | |
1938 | if (1 == pcontrol) | |
1939 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); | |
1940 | return sizeof(sas_sha_m_pg); | |
1941 | } | |
1942 | ||
1da177e4 LT |
1943 | #define SDEBUG_MAX_MSENSE_SZ 256 |
1944 | ||
c2248fc9 DG |
1945 | static int |
1946 | resp_mode_sense(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
1da177e4 | 1947 | { |
23183910 DG |
1948 | unsigned char dbd, llbaa; |
1949 | int pcontrol, pcode, subpcode, bd_len; | |
1da177e4 | 1950 | unsigned char dev_spec; |
c2248fc9 DG |
1951 | int k, alloc_len, msense_6, offset, len, target_dev_id; |
1952 | int target = scp->device->id; | |
1da177e4 LT |
1953 | unsigned char * ap; |
1954 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; | |
01123ef4 | 1955 | unsigned char *cmd = scp->cmnd; |
1da177e4 | 1956 | |
23183910 | 1957 | dbd = !!(cmd[1] & 0x8); |
1da177e4 LT |
1958 | pcontrol = (cmd[2] & 0xc0) >> 6; |
1959 | pcode = cmd[2] & 0x3f; | |
1960 | subpcode = cmd[3]; | |
1961 | msense_6 = (MODE_SENSE == cmd[0]); | |
23183910 DG |
1962 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
1963 | if ((0 == scsi_debug_ptype) && (0 == dbd)) | |
1964 | bd_len = llbaa ? 16 : 8; | |
1965 | else | |
1966 | bd_len = 0; | |
1da177e4 LT |
1967 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
1968 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); | |
1969 | if (0x3 == pcontrol) { /* Saving values not supported */ | |
cbf67842 | 1970 | mk_sense_buffer(scp, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, 0); |
1da177e4 LT |
1971 | return check_condition_result; |
1972 | } | |
c65b1445 DG |
1973 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
1974 | (devip->target * 1000) - 3; | |
23183910 DG |
1975 | /* set DPOFUA bit for disks */ |
1976 | if (0 == scsi_debug_ptype) | |
1977 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; | |
1978 | else | |
1979 | dev_spec = 0x0; | |
1da177e4 LT |
1980 | if (msense_6) { |
1981 | arr[2] = dev_spec; | |
23183910 | 1982 | arr[3] = bd_len; |
1da177e4 LT |
1983 | offset = 4; |
1984 | } else { | |
1985 | arr[3] = dev_spec; | |
23183910 DG |
1986 | if (16 == bd_len) |
1987 | arr[4] = 0x1; /* set LONGLBA bit */ | |
1988 | arr[7] = bd_len; /* assume 255 or less */ | |
1da177e4 LT |
1989 | offset = 8; |
1990 | } | |
1991 | ap = arr + offset; | |
28898873 FT |
1992 | if ((bd_len > 0) && (!sdebug_capacity)) |
1993 | sdebug_capacity = get_sdebug_capacity(); | |
1994 | ||
23183910 DG |
1995 | if (8 == bd_len) { |
1996 | if (sdebug_capacity > 0xfffffffe) { | |
1997 | ap[0] = 0xff; | |
1998 | ap[1] = 0xff; | |
1999 | ap[2] = 0xff; | |
2000 | ap[3] = 0xff; | |
2001 | } else { | |
2002 | ap[0] = (sdebug_capacity >> 24) & 0xff; | |
2003 | ap[1] = (sdebug_capacity >> 16) & 0xff; | |
2004 | ap[2] = (sdebug_capacity >> 8) & 0xff; | |
2005 | ap[3] = sdebug_capacity & 0xff; | |
2006 | } | |
597136ab MP |
2007 | ap[6] = (scsi_debug_sector_size >> 8) & 0xff; |
2008 | ap[7] = scsi_debug_sector_size & 0xff; | |
23183910 DG |
2009 | offset += bd_len; |
2010 | ap = arr + offset; | |
2011 | } else if (16 == bd_len) { | |
2012 | unsigned long long capac = sdebug_capacity; | |
2013 | ||
2014 | for (k = 0; k < 8; ++k, capac >>= 8) | |
2015 | ap[7 - k] = capac & 0xff; | |
597136ab MP |
2016 | ap[12] = (scsi_debug_sector_size >> 24) & 0xff; |
2017 | ap[13] = (scsi_debug_sector_size >> 16) & 0xff; | |
2018 | ap[14] = (scsi_debug_sector_size >> 8) & 0xff; | |
2019 | ap[15] = scsi_debug_sector_size & 0xff; | |
23183910 DG |
2020 | offset += bd_len; |
2021 | ap = arr + offset; | |
2022 | } | |
1da177e4 | 2023 | |
c65b1445 DG |
2024 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
2025 | /* TODO: Control Extension page */ | |
22017ed2 | 2026 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
1da177e4 LT |
2027 | return check_condition_result; |
2028 | } | |
2029 | switch (pcode) { | |
2030 | case 0x1: /* Read-Write error recovery page, direct access */ | |
2031 | len = resp_err_recov_pg(ap, pcontrol, target); | |
2032 | offset += len; | |
2033 | break; | |
2034 | case 0x2: /* Disconnect-Reconnect page, all devices */ | |
2035 | len = resp_disconnect_pg(ap, pcontrol, target); | |
2036 | offset += len; | |
2037 | break; | |
2038 | case 0x3: /* Format device page, direct access */ | |
2039 | len = resp_format_pg(ap, pcontrol, target); | |
2040 | offset += len; | |
2041 | break; | |
2042 | case 0x8: /* Caching page, direct access */ | |
2043 | len = resp_caching_pg(ap, pcontrol, target); | |
2044 | offset += len; | |
2045 | break; | |
2046 | case 0xa: /* Control Mode page, all devices */ | |
2047 | len = resp_ctrl_m_pg(ap, pcontrol, target); | |
2048 | offset += len; | |
2049 | break; | |
c65b1445 DG |
2050 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
2051 | if ((subpcode > 0x2) && (subpcode < 0xff)) { | |
22017ed2 | 2052 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
c65b1445 DG |
2053 | return check_condition_result; |
2054 | } | |
2055 | len = 0; | |
2056 | if ((0x0 == subpcode) || (0xff == subpcode)) | |
2057 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
2058 | if ((0x1 == subpcode) || (0xff == subpcode)) | |
2059 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, | |
2060 | target_dev_id); | |
2061 | if ((0x2 == subpcode) || (0xff == subpcode)) | |
2062 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
2063 | offset += len; | |
2064 | break; | |
1da177e4 LT |
2065 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
2066 | len = resp_iec_m_pg(ap, pcontrol, target); | |
2067 | offset += len; | |
2068 | break; | |
2069 | case 0x3f: /* Read all Mode pages */ | |
c65b1445 DG |
2070 | if ((0 == subpcode) || (0xff == subpcode)) { |
2071 | len = resp_err_recov_pg(ap, pcontrol, target); | |
2072 | len += resp_disconnect_pg(ap + len, pcontrol, target); | |
2073 | len += resp_format_pg(ap + len, pcontrol, target); | |
2074 | len += resp_caching_pg(ap + len, pcontrol, target); | |
2075 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); | |
2076 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
2077 | if (0xff == subpcode) { | |
2078 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, | |
2079 | target, target_dev_id); | |
2080 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
2081 | } | |
2082 | len += resp_iec_m_pg(ap + len, pcontrol, target); | |
2083 | } else { | |
22017ed2 | 2084 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
c65b1445 DG |
2085 | return check_condition_result; |
2086 | } | |
1da177e4 LT |
2087 | offset += len; |
2088 | break; | |
2089 | default: | |
22017ed2 | 2090 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
1da177e4 LT |
2091 | return check_condition_result; |
2092 | } | |
2093 | if (msense_6) | |
2094 | arr[0] = offset - 1; | |
2095 | else { | |
2096 | arr[0] = ((offset - 2) >> 8) & 0xff; | |
2097 | arr[1] = (offset - 2) & 0xff; | |
2098 | } | |
2099 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); | |
2100 | } | |
2101 | ||
c65b1445 DG |
2102 | #define SDEBUG_MAX_MSELECT_SZ 512 |
2103 | ||
c2248fc9 DG |
2104 | static int |
2105 | resp_mode_select(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
c65b1445 DG |
2106 | { |
2107 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; | |
c2248fc9 | 2108 | int param_len, res, mpage; |
c65b1445 | 2109 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; |
01123ef4 | 2110 | unsigned char *cmd = scp->cmnd; |
c2248fc9 | 2111 | int mselect6 = (MODE_SELECT == cmd[0]); |
c65b1445 | 2112 | |
c65b1445 DG |
2113 | memset(arr, 0, sizeof(arr)); |
2114 | pf = cmd[1] & 0x10; | |
2115 | sp = cmd[1] & 0x1; | |
2116 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); | |
2117 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { | |
22017ed2 | 2118 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, mselect6 ? 4 : 7, -1); |
c65b1445 DG |
2119 | return check_condition_result; |
2120 | } | |
2121 | res = fetch_to_dev_buffer(scp, arr, param_len); | |
2122 | if (-1 == res) | |
2123 | return (DID_ERROR << 16); | |
2124 | else if ((res < param_len) && | |
2125 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
cbf67842 DG |
2126 | sdev_printk(KERN_INFO, scp->device, |
2127 | "%s: cdb indicated=%d, IO sent=%d bytes\n", | |
2128 | __func__, param_len, res); | |
c65b1445 DG |
2129 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); |
2130 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); | |
23183910 | 2131 | if (md_len > 2) { |
22017ed2 | 2132 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, 0, -1); |
c65b1445 DG |
2133 | return check_condition_result; |
2134 | } | |
2135 | off = bd_len + (mselect6 ? 4 : 8); | |
2136 | mpage = arr[off] & 0x3f; | |
2137 | ps = !!(arr[off] & 0x80); | |
2138 | if (ps) { | |
22017ed2 | 2139 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 7); |
c65b1445 DG |
2140 | return check_condition_result; |
2141 | } | |
2142 | spf = !!(arr[off] & 0x40); | |
2143 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : | |
2144 | (arr[off + 1] + 2); | |
2145 | if ((pg_len + off) > param_len) { | |
cbf67842 | 2146 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
c65b1445 DG |
2147 | PARAMETER_LIST_LENGTH_ERR, 0); |
2148 | return check_condition_result; | |
2149 | } | |
2150 | switch (mpage) { | |
cbf67842 DG |
2151 | case 0x8: /* Caching Mode page */ |
2152 | if (caching_pg[1] == arr[off + 1]) { | |
2153 | memcpy(caching_pg + 2, arr + off + 2, | |
2154 | sizeof(caching_pg) - 2); | |
2155 | goto set_mode_changed_ua; | |
2156 | } | |
2157 | break; | |
c65b1445 DG |
2158 | case 0xa: /* Control Mode page */ |
2159 | if (ctrl_m_pg[1] == arr[off + 1]) { | |
2160 | memcpy(ctrl_m_pg + 2, arr + off + 2, | |
2161 | sizeof(ctrl_m_pg) - 2); | |
2162 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); | |
cbf67842 | 2163 | goto set_mode_changed_ua; |
c65b1445 DG |
2164 | } |
2165 | break; | |
2166 | case 0x1c: /* Informational Exceptions Mode page */ | |
2167 | if (iec_m_pg[1] == arr[off + 1]) { | |
2168 | memcpy(iec_m_pg + 2, arr + off + 2, | |
2169 | sizeof(iec_m_pg) - 2); | |
cbf67842 | 2170 | goto set_mode_changed_ua; |
c65b1445 DG |
2171 | } |
2172 | break; | |
2173 | default: | |
2174 | break; | |
2175 | } | |
22017ed2 | 2176 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 5); |
c65b1445 | 2177 | return check_condition_result; |
cbf67842 DG |
2178 | set_mode_changed_ua: |
2179 | set_bit(SDEBUG_UA_MODE_CHANGED, devip->uas_bm); | |
2180 | return 0; | |
c65b1445 DG |
2181 | } |
2182 | ||
2183 | static int resp_temp_l_pg(unsigned char * arr) | |
2184 | { | |
2185 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, | |
2186 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, | |
2187 | }; | |
2188 | ||
2189 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); | |
2190 | return sizeof(temp_l_pg); | |
2191 | } | |
2192 | ||
2193 | static int resp_ie_l_pg(unsigned char * arr) | |
2194 | { | |
2195 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, | |
2196 | }; | |
2197 | ||
2198 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); | |
2199 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ | |
2200 | arr[4] = THRESHOLD_EXCEEDED; | |
2201 | arr[5] = 0xff; | |
2202 | } | |
2203 | return sizeof(ie_l_pg); | |
2204 | } | |
2205 | ||
2206 | #define SDEBUG_MAX_LSENSE_SZ 512 | |
2207 | ||
2208 | static int resp_log_sense(struct scsi_cmnd * scp, | |
2209 | struct sdebug_dev_info * devip) | |
2210 | { | |
c2248fc9 | 2211 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, len, n; |
c65b1445 | 2212 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
01123ef4 | 2213 | unsigned char *cmd = scp->cmnd; |
c65b1445 | 2214 | |
c65b1445 DG |
2215 | memset(arr, 0, sizeof(arr)); |
2216 | ppc = cmd[1] & 0x2; | |
2217 | sp = cmd[1] & 0x1; | |
2218 | if (ppc || sp) { | |
22017ed2 | 2219 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, ppc ? 1 : 0); |
c65b1445 DG |
2220 | return check_condition_result; |
2221 | } | |
2222 | pcontrol = (cmd[2] & 0xc0) >> 6; | |
2223 | pcode = cmd[2] & 0x3f; | |
23183910 | 2224 | subpcode = cmd[3] & 0xff; |
c65b1445 DG |
2225 | alloc_len = (cmd[7] << 8) + cmd[8]; |
2226 | arr[0] = pcode; | |
23183910 DG |
2227 | if (0 == subpcode) { |
2228 | switch (pcode) { | |
2229 | case 0x0: /* Supported log pages log page */ | |
2230 | n = 4; | |
2231 | arr[n++] = 0x0; /* this page */ | |
2232 | arr[n++] = 0xd; /* Temperature */ | |
2233 | arr[n++] = 0x2f; /* Informational exceptions */ | |
2234 | arr[3] = n - 4; | |
2235 | break; | |
2236 | case 0xd: /* Temperature log page */ | |
2237 | arr[3] = resp_temp_l_pg(arr + 4); | |
2238 | break; | |
2239 | case 0x2f: /* Informational exceptions log page */ | |
2240 | arr[3] = resp_ie_l_pg(arr + 4); | |
2241 | break; | |
2242 | default: | |
22017ed2 | 2243 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
23183910 DG |
2244 | return check_condition_result; |
2245 | } | |
2246 | } else if (0xff == subpcode) { | |
2247 | arr[0] |= 0x40; | |
2248 | arr[1] = subpcode; | |
2249 | switch (pcode) { | |
2250 | case 0x0: /* Supported log pages and subpages log page */ | |
2251 | n = 4; | |
2252 | arr[n++] = 0x0; | |
2253 | arr[n++] = 0x0; /* 0,0 page */ | |
2254 | arr[n++] = 0x0; | |
2255 | arr[n++] = 0xff; /* this page */ | |
2256 | arr[n++] = 0xd; | |
2257 | arr[n++] = 0x0; /* Temperature */ | |
2258 | arr[n++] = 0x2f; | |
2259 | arr[n++] = 0x0; /* Informational exceptions */ | |
2260 | arr[3] = n - 4; | |
2261 | break; | |
2262 | case 0xd: /* Temperature subpages */ | |
2263 | n = 4; | |
2264 | arr[n++] = 0xd; | |
2265 | arr[n++] = 0x0; /* Temperature */ | |
2266 | arr[3] = n - 4; | |
2267 | break; | |
2268 | case 0x2f: /* Informational exceptions subpages */ | |
2269 | n = 4; | |
2270 | arr[n++] = 0x2f; | |
2271 | arr[n++] = 0x0; /* Informational exceptions */ | |
2272 | arr[3] = n - 4; | |
2273 | break; | |
2274 | default: | |
22017ed2 | 2275 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
23183910 DG |
2276 | return check_condition_result; |
2277 | } | |
2278 | } else { | |
22017ed2 | 2279 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
c65b1445 DG |
2280 | return check_condition_result; |
2281 | } | |
2282 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); | |
2283 | return fill_from_dev_buffer(scp, arr, | |
2284 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); | |
2285 | } | |
2286 | ||
cbf67842 | 2287 | static int check_device_access_params(struct scsi_cmnd *scp, |
19789100 | 2288 | unsigned long long lba, unsigned int num) |
1da177e4 | 2289 | { |
c65b1445 | 2290 | if (lba + num > sdebug_capacity) { |
22017ed2 | 2291 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
1da177e4 LT |
2292 | return check_condition_result; |
2293 | } | |
c65b1445 DG |
2294 | /* transfer length excessive (tie in to block limits VPD page) */ |
2295 | if (num > sdebug_store_sectors) { | |
22017ed2 | 2296 | /* needs work to find which cdb byte 'num' comes from */ |
cbf67842 | 2297 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
c65b1445 DG |
2298 | return check_condition_result; |
2299 | } | |
19789100 FT |
2300 | return 0; |
2301 | } | |
2302 | ||
a4517511 | 2303 | /* Returns number of bytes copied or -1 if error. */ |
c2248fc9 DG |
2304 | static int |
2305 | do_device_access(struct scsi_cmnd *scmd, u64 lba, u32 num, bool do_write) | |
19789100 FT |
2306 | { |
2307 | int ret; | |
c2248fc9 | 2308 | u64 block, rest = 0; |
a4517511 AM |
2309 | struct scsi_data_buffer *sdb; |
2310 | enum dma_data_direction dir; | |
2311 | size_t (*func)(struct scatterlist *, unsigned int, void *, size_t, | |
2312 | off_t); | |
2313 | ||
c2248fc9 | 2314 | if (do_write) { |
a4517511 AM |
2315 | sdb = scsi_out(scmd); |
2316 | dir = DMA_TO_DEVICE; | |
2317 | func = sg_pcopy_to_buffer; | |
2318 | } else { | |
2319 | sdb = scsi_in(scmd); | |
2320 | dir = DMA_FROM_DEVICE; | |
2321 | func = sg_pcopy_from_buffer; | |
2322 | } | |
19789100 | 2323 | |
a4517511 AM |
2324 | if (!sdb->length) |
2325 | return 0; | |
2326 | if (!(scsi_bidi_cmnd(scmd) || scmd->sc_data_direction == dir)) | |
2327 | return -1; | |
19789100 FT |
2328 | |
2329 | block = do_div(lba, sdebug_store_sectors); | |
2330 | if (block + num > sdebug_store_sectors) | |
2331 | rest = block + num - sdebug_store_sectors; | |
2332 | ||
a4517511 AM |
2333 | ret = func(sdb->table.sgl, sdb->table.nents, |
2334 | fake_storep + (block * scsi_debug_sector_size), | |
2335 | (num - rest) * scsi_debug_sector_size, 0); | |
2336 | if (ret != (num - rest) * scsi_debug_sector_size) | |
2337 | return ret; | |
2338 | ||
2339 | if (rest) { | |
2340 | ret += func(sdb->table.sgl, sdb->table.nents, | |
2341 | fake_storep, rest * scsi_debug_sector_size, | |
2342 | (num - rest) * scsi_debug_sector_size); | |
2343 | } | |
19789100 FT |
2344 | |
2345 | return ret; | |
2346 | } | |
2347 | ||
38d5c833 DG |
2348 | /* If fake_store(lba,num) compares equal to arr(num), then copy top half of |
2349 | * arr into fake_store(lba,num) and return true. If comparison fails then | |
2350 | * return false. */ | |
2351 | static bool | |
2352 | comp_write_worker(u64 lba, u32 num, const u8 *arr) | |
2353 | { | |
2354 | bool res; | |
2355 | u64 block, rest = 0; | |
2356 | u32 store_blks = sdebug_store_sectors; | |
2357 | u32 lb_size = scsi_debug_sector_size; | |
2358 | ||
2359 | block = do_div(lba, store_blks); | |
2360 | if (block + num > store_blks) | |
2361 | rest = block + num - store_blks; | |
2362 | ||
2363 | res = !memcmp(fake_storep + (block * lb_size), arr, | |
2364 | (num - rest) * lb_size); | |
2365 | if (!res) | |
2366 | return res; | |
2367 | if (rest) | |
2368 | res = memcmp(fake_storep, arr + ((num - rest) * lb_size), | |
2369 | rest * lb_size); | |
2370 | if (!res) | |
2371 | return res; | |
2372 | arr += num * lb_size; | |
2373 | memcpy(fake_storep + (block * lb_size), arr, (num - rest) * lb_size); | |
2374 | if (rest) | |
2375 | memcpy(fake_storep, arr + ((num - rest) * lb_size), | |
2376 | rest * lb_size); | |
2377 | return res; | |
2378 | } | |
2379 | ||
51d648af | 2380 | static __be16 dif_compute_csum(const void *buf, int len) |
beb40ea4 | 2381 | { |
51d648af | 2382 | __be16 csum; |
beb40ea4 | 2383 | |
51d648af AM |
2384 | if (scsi_debug_guard) |
2385 | csum = (__force __be16)ip_compute_csum(buf, len); | |
2386 | else | |
beb40ea4 | 2387 | csum = cpu_to_be16(crc_t10dif(buf, len)); |
51d648af | 2388 | |
beb40ea4 AM |
2389 | return csum; |
2390 | } | |
2391 | ||
2392 | static int dif_verify(struct sd_dif_tuple *sdt, const void *data, | |
2393 | sector_t sector, u32 ei_lba) | |
2394 | { | |
51d648af | 2395 | __be16 csum = dif_compute_csum(data, scsi_debug_sector_size); |
beb40ea4 AM |
2396 | |
2397 | if (sdt->guard_tag != csum) { | |
2398 | pr_err("%s: GUARD check failed on sector %lu rcvd 0x%04x, data 0x%04x\n", | |
2399 | __func__, | |
2400 | (unsigned long)sector, | |
2401 | be16_to_cpu(sdt->guard_tag), | |
2402 | be16_to_cpu(csum)); | |
2403 | return 0x01; | |
2404 | } | |
2405 | if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION && | |
2406 | be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) { | |
2407 | pr_err("%s: REF check failed on sector %lu\n", | |
2408 | __func__, (unsigned long)sector); | |
2409 | return 0x03; | |
2410 | } | |
2411 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
2412 | be32_to_cpu(sdt->ref_tag) != ei_lba) { | |
2413 | pr_err("%s: REF check failed on sector %lu\n", | |
2414 | __func__, (unsigned long)sector); | |
beb40ea4 AM |
2415 | return 0x03; |
2416 | } | |
2417 | return 0; | |
2418 | } | |
2419 | ||
bb8c063c | 2420 | static void dif_copy_prot(struct scsi_cmnd *SCpnt, sector_t sector, |
65f72f2a | 2421 | unsigned int sectors, bool read) |
c6a44287 | 2422 | { |
be4e11be | 2423 | size_t resid; |
c6a44287 | 2424 | void *paddr; |
14faa944 | 2425 | const void *dif_store_end = dif_storep + sdebug_store_sectors; |
be4e11be | 2426 | struct sg_mapping_iter miter; |
c6a44287 | 2427 | |
e18d8bea AM |
2428 | /* Bytes of protection data to copy into sgl */ |
2429 | resid = sectors * sizeof(*dif_storep); | |
c6a44287 | 2430 | |
be4e11be AM |
2431 | sg_miter_start(&miter, scsi_prot_sglist(SCpnt), |
2432 | scsi_prot_sg_count(SCpnt), SG_MITER_ATOMIC | | |
2433 | (read ? SG_MITER_TO_SG : SG_MITER_FROM_SG)); | |
2434 | ||
2435 | while (sg_miter_next(&miter) && resid > 0) { | |
2436 | size_t len = min(miter.length, resid); | |
14faa944 | 2437 | void *start = dif_store(sector); |
be4e11be | 2438 | size_t rest = 0; |
14faa944 AM |
2439 | |
2440 | if (dif_store_end < start + len) | |
2441 | rest = start + len - dif_store_end; | |
c6a44287 | 2442 | |
be4e11be | 2443 | paddr = miter.addr; |
14faa944 | 2444 | |
65f72f2a AM |
2445 | if (read) |
2446 | memcpy(paddr, start, len - rest); | |
2447 | else | |
2448 | memcpy(start, paddr, len - rest); | |
2449 | ||
2450 | if (rest) { | |
2451 | if (read) | |
2452 | memcpy(paddr + len - rest, dif_storep, rest); | |
2453 | else | |
2454 | memcpy(dif_storep, paddr + len - rest, rest); | |
2455 | } | |
c6a44287 | 2456 | |
e18d8bea | 2457 | sector += len / sizeof(*dif_storep); |
c6a44287 | 2458 | resid -= len; |
c6a44287 | 2459 | } |
be4e11be | 2460 | sg_miter_stop(&miter); |
bb8c063c AM |
2461 | } |
2462 | ||
2463 | static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, | |
2464 | unsigned int sectors, u32 ei_lba) | |
2465 | { | |
2466 | unsigned int i; | |
2467 | struct sd_dif_tuple *sdt; | |
2468 | sector_t sector; | |
2469 | ||
c45eabec | 2470 | for (i = 0; i < sectors; i++, ei_lba++) { |
bb8c063c AM |
2471 | int ret; |
2472 | ||
2473 | sector = start_sec + i; | |
2474 | sdt = dif_store(sector); | |
2475 | ||
51d648af | 2476 | if (sdt->app_tag == cpu_to_be16(0xffff)) |
bb8c063c AM |
2477 | continue; |
2478 | ||
2479 | ret = dif_verify(sdt, fake_store(sector), sector, ei_lba); | |
2480 | if (ret) { | |
2481 | dif_errors++; | |
2482 | return ret; | |
2483 | } | |
bb8c063c | 2484 | } |
c6a44287 | 2485 | |
65f72f2a | 2486 | dif_copy_prot(SCpnt, start_sec, sectors, true); |
c6a44287 MP |
2487 | dix_reads++; |
2488 | ||
2489 | return 0; | |
2490 | } | |
2491 | ||
c2248fc9 DG |
2492 | static int |
2493 | resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
19789100 | 2494 | { |
c2248fc9 DG |
2495 | u8 *cmd = scp->cmnd; |
2496 | u64 lba; | |
2497 | u32 num; | |
2498 | u32 ei_lba; | |
19789100 FT |
2499 | unsigned long iflags; |
2500 | int ret; | |
c2248fc9 | 2501 | bool check_prot; |
19789100 | 2502 | |
c2248fc9 DG |
2503 | switch (cmd[0]) { |
2504 | case READ_16: | |
2505 | ei_lba = 0; | |
2506 | lba = get_unaligned_be64(cmd + 2); | |
2507 | num = get_unaligned_be32(cmd + 10); | |
2508 | check_prot = true; | |
2509 | break; | |
2510 | case READ_10: | |
2511 | ei_lba = 0; | |
2512 | lba = get_unaligned_be32(cmd + 2); | |
2513 | num = get_unaligned_be16(cmd + 7); | |
2514 | check_prot = true; | |
2515 | break; | |
2516 | case READ_6: | |
2517 | ei_lba = 0; | |
2518 | lba = (u32)cmd[3] | (u32)cmd[2] << 8 | | |
2519 | (u32)(cmd[1] & 0x1f) << 16; | |
2520 | num = (0 == cmd[4]) ? 256 : cmd[4]; | |
2521 | check_prot = true; | |
2522 | break; | |
2523 | case READ_12: | |
2524 | ei_lba = 0; | |
2525 | lba = get_unaligned_be32(cmd + 2); | |
2526 | num = get_unaligned_be32(cmd + 6); | |
2527 | check_prot = true; | |
2528 | break; | |
2529 | case XDWRITEREAD_10: | |
2530 | ei_lba = 0; | |
2531 | lba = get_unaligned_be32(cmd + 2); | |
2532 | num = get_unaligned_be16(cmd + 7); | |
2533 | check_prot = false; | |
2534 | break; | |
2535 | default: /* assume READ(32) */ | |
2536 | lba = get_unaligned_be64(cmd + 12); | |
2537 | ei_lba = get_unaligned_be32(cmd + 20); | |
2538 | num = get_unaligned_be32(cmd + 28); | |
2539 | check_prot = false; | |
2540 | break; | |
2541 | } | |
2542 | if (check_prot) { | |
2543 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
2544 | (cmd[1] & 0xe0)) { | |
2545 | mk_sense_invalid_opcode(scp); | |
2546 | return check_condition_result; | |
2547 | } | |
2548 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || | |
2549 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && | |
2550 | (cmd[1] & 0xe0) == 0) | |
2551 | sdev_printk(KERN_ERR, scp->device, "Unprotected RD " | |
2552 | "to DIF device\n"); | |
2553 | } | |
2554 | if (sdebug_any_injecting_opt) { | |
2555 | struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp); | |
2556 | ||
2557 | if (ep->inj_short) | |
2558 | num /= 2; | |
2559 | } | |
2560 | ||
2561 | /* inline check_device_access_params() */ | |
2562 | if (lba + num > sdebug_capacity) { | |
2563 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
2564 | return check_condition_result; | |
2565 | } | |
2566 | /* transfer length excessive (tie in to block limits VPD page) */ | |
2567 | if (num > sdebug_store_sectors) { | |
2568 | /* needs work to find which cdb byte 'num' comes from */ | |
2569 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
2570 | return check_condition_result; | |
2571 | } | |
19789100 | 2572 | |
1da177e4 | 2573 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
32f7ef73 | 2574 | (lba <= (OPT_MEDIUM_ERR_ADDR + OPT_MEDIUM_ERR_NUM - 1)) && |
c65b1445 DG |
2575 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { |
2576 | /* claim unrecoverable read error */ | |
c2248fc9 | 2577 | mk_sense_buffer(scp, MEDIUM_ERROR, UNRECOVERED_READ_ERR, 0); |
c65b1445 | 2578 | /* set info field and valid bit for fixed descriptor */ |
c2248fc9 DG |
2579 | if (0x70 == (scp->sense_buffer[0] & 0x7f)) { |
2580 | scp->sense_buffer[0] |= 0x80; /* Valid bit */ | |
32f7ef73 DG |
2581 | ret = (lba < OPT_MEDIUM_ERR_ADDR) |
2582 | ? OPT_MEDIUM_ERR_ADDR : (int)lba; | |
c2248fc9 | 2583 | put_unaligned_be32(ret, scp->sense_buffer + 3); |
c65b1445 | 2584 | } |
c2248fc9 | 2585 | scsi_set_resid(scp, scsi_bufflen(scp)); |
1da177e4 LT |
2586 | return check_condition_result; |
2587 | } | |
c6a44287 | 2588 | |
6c78cc06 AM |
2589 | read_lock_irqsave(&atomic_rw, iflags); |
2590 | ||
c6a44287 | 2591 | /* DIX + T10 DIF */ |
c2248fc9 DG |
2592 | if (scsi_debug_dix && scsi_prot_sg_count(scp)) { |
2593 | int prot_ret = prot_verify_read(scp, lba, num, ei_lba); | |
c6a44287 MP |
2594 | |
2595 | if (prot_ret) { | |
6c78cc06 | 2596 | read_unlock_irqrestore(&atomic_rw, iflags); |
c2248fc9 | 2597 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, prot_ret); |
c6a44287 MP |
2598 | return illegal_condition_result; |
2599 | } | |
2600 | } | |
2601 | ||
c2248fc9 | 2602 | ret = do_device_access(scp, lba, num, false); |
1da177e4 | 2603 | read_unlock_irqrestore(&atomic_rw, iflags); |
a4517511 AM |
2604 | if (ret == -1) |
2605 | return DID_ERROR << 16; | |
2606 | ||
c2248fc9 | 2607 | scsi_in(scp)->resid = scsi_bufflen(scp) - ret; |
a4517511 | 2608 | |
c2248fc9 DG |
2609 | if (sdebug_any_injecting_opt) { |
2610 | struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp); | |
2611 | ||
2612 | if (ep->inj_recovered) { | |
2613 | mk_sense_buffer(scp, RECOVERED_ERROR, | |
2614 | THRESHOLD_EXCEEDED, 0); | |
2615 | return check_condition_result; | |
2616 | } else if (ep->inj_transport) { | |
2617 | mk_sense_buffer(scp, ABORTED_COMMAND, | |
2618 | TRANSPORT_PROBLEM, ACK_NAK_TO); | |
2619 | return check_condition_result; | |
2620 | } else if (ep->inj_dif) { | |
2621 | /* Logical block guard check failed */ | |
2622 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); | |
2623 | return illegal_condition_result; | |
2624 | } else if (ep->inj_dix) { | |
2625 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); | |
2626 | return illegal_condition_result; | |
2627 | } | |
2628 | } | |
a4517511 | 2629 | return 0; |
1da177e4 LT |
2630 | } |
2631 | ||
c6a44287 MP |
2632 | void dump_sector(unsigned char *buf, int len) |
2633 | { | |
cbf67842 | 2634 | int i, j, n; |
c6a44287 | 2635 | |
cbf67842 | 2636 | pr_err(">>> Sector Dump <<<\n"); |
c6a44287 | 2637 | for (i = 0 ; i < len ; i += 16) { |
cbf67842 | 2638 | char b[128]; |
c6a44287 | 2639 | |
cbf67842 | 2640 | for (j = 0, n = 0; j < 16; j++) { |
c6a44287 | 2641 | unsigned char c = buf[i+j]; |
cbf67842 | 2642 | |
c6a44287 | 2643 | if (c >= 0x20 && c < 0x7e) |
cbf67842 DG |
2644 | n += scnprintf(b + n, sizeof(b) - n, |
2645 | " %c ", buf[i+j]); | |
c6a44287 | 2646 | else |
cbf67842 DG |
2647 | n += scnprintf(b + n, sizeof(b) - n, |
2648 | "%02x ", buf[i+j]); | |
c6a44287 | 2649 | } |
cbf67842 | 2650 | pr_err("%04d: %s\n", i, b); |
c6a44287 MP |
2651 | } |
2652 | } | |
2653 | ||
2654 | static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, | |
395cef03 | 2655 | unsigned int sectors, u32 ei_lba) |
c6a44287 | 2656 | { |
be4e11be | 2657 | int ret; |
c6a44287 | 2658 | struct sd_dif_tuple *sdt; |
be4e11be | 2659 | void *daddr; |
65f72f2a | 2660 | sector_t sector = start_sec; |
c6a44287 | 2661 | int ppage_offset; |
be4e11be AM |
2662 | int dpage_offset; |
2663 | struct sg_mapping_iter diter; | |
2664 | struct sg_mapping_iter piter; | |
c6a44287 | 2665 | |
c6a44287 MP |
2666 | BUG_ON(scsi_sg_count(SCpnt) == 0); |
2667 | BUG_ON(scsi_prot_sg_count(SCpnt) == 0); | |
2668 | ||
be4e11be AM |
2669 | sg_miter_start(&piter, scsi_prot_sglist(SCpnt), |
2670 | scsi_prot_sg_count(SCpnt), | |
2671 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); | |
2672 | sg_miter_start(&diter, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), | |
2673 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); | |
2674 | ||
2675 | /* For each protection page */ | |
2676 | while (sg_miter_next(&piter)) { | |
2677 | dpage_offset = 0; | |
2678 | if (WARN_ON(!sg_miter_next(&diter))) { | |
2679 | ret = 0x01; | |
2680 | goto out; | |
2681 | } | |
c6a44287 | 2682 | |
be4e11be AM |
2683 | for (ppage_offset = 0; ppage_offset < piter.length; |
2684 | ppage_offset += sizeof(struct sd_dif_tuple)) { | |
c6a44287 | 2685 | /* If we're at the end of the current |
be4e11be | 2686 | * data page advance to the next one |
c6a44287 | 2687 | */ |
be4e11be AM |
2688 | if (dpage_offset >= diter.length) { |
2689 | if (WARN_ON(!sg_miter_next(&diter))) { | |
2690 | ret = 0x01; | |
2691 | goto out; | |
2692 | } | |
2693 | dpage_offset = 0; | |
c6a44287 MP |
2694 | } |
2695 | ||
be4e11be AM |
2696 | sdt = piter.addr + ppage_offset; |
2697 | daddr = diter.addr + dpage_offset; | |
c6a44287 | 2698 | |
be4e11be | 2699 | ret = dif_verify(sdt, daddr, sector, ei_lba); |
beb40ea4 | 2700 | if (ret) { |
be4e11be | 2701 | dump_sector(daddr, scsi_debug_sector_size); |
395cef03 MP |
2702 | goto out; |
2703 | } | |
2704 | ||
c6a44287 | 2705 | sector++; |
395cef03 | 2706 | ei_lba++; |
be4e11be | 2707 | dpage_offset += scsi_debug_sector_size; |
c6a44287 | 2708 | } |
be4e11be AM |
2709 | diter.consumed = dpage_offset; |
2710 | sg_miter_stop(&diter); | |
c6a44287 | 2711 | } |
be4e11be | 2712 | sg_miter_stop(&piter); |
c6a44287 | 2713 | |
65f72f2a | 2714 | dif_copy_prot(SCpnt, start_sec, sectors, false); |
c6a44287 MP |
2715 | dix_writes++; |
2716 | ||
2717 | return 0; | |
2718 | ||
2719 | out: | |
2720 | dif_errors++; | |
be4e11be AM |
2721 | sg_miter_stop(&diter); |
2722 | sg_miter_stop(&piter); | |
c6a44287 MP |
2723 | return ret; |
2724 | } | |
2725 | ||
b90ebc3d AM |
2726 | static unsigned long lba_to_map_index(sector_t lba) |
2727 | { | |
2728 | if (scsi_debug_unmap_alignment) { | |
2729 | lba += scsi_debug_unmap_granularity - | |
2730 | scsi_debug_unmap_alignment; | |
2731 | } | |
2732 | do_div(lba, scsi_debug_unmap_granularity); | |
2733 | ||
2734 | return lba; | |
2735 | } | |
2736 | ||
2737 | static sector_t map_index_to_lba(unsigned long index) | |
44d92694 | 2738 | { |
a027b5b9 AM |
2739 | sector_t lba = index * scsi_debug_unmap_granularity; |
2740 | ||
2741 | if (scsi_debug_unmap_alignment) { | |
2742 | lba -= scsi_debug_unmap_granularity - | |
2743 | scsi_debug_unmap_alignment; | |
2744 | } | |
2745 | ||
2746 | return lba; | |
b90ebc3d | 2747 | } |
44d92694 | 2748 | |
b90ebc3d AM |
2749 | static unsigned int map_state(sector_t lba, unsigned int *num) |
2750 | { | |
2751 | sector_t end; | |
2752 | unsigned int mapped; | |
2753 | unsigned long index; | |
2754 | unsigned long next; | |
44d92694 | 2755 | |
b90ebc3d AM |
2756 | index = lba_to_map_index(lba); |
2757 | mapped = test_bit(index, map_storep); | |
44d92694 MP |
2758 | |
2759 | if (mapped) | |
b90ebc3d | 2760 | next = find_next_zero_bit(map_storep, map_size, index); |
44d92694 | 2761 | else |
b90ebc3d | 2762 | next = find_next_bit(map_storep, map_size, index); |
44d92694 | 2763 | |
b90ebc3d | 2764 | end = min_t(sector_t, sdebug_store_sectors, map_index_to_lba(next)); |
44d92694 MP |
2765 | *num = end - lba; |
2766 | ||
2767 | return mapped; | |
2768 | } | |
2769 | ||
2770 | static void map_region(sector_t lba, unsigned int len) | |
2771 | { | |
44d92694 MP |
2772 | sector_t end = lba + len; |
2773 | ||
44d92694 | 2774 | while (lba < end) { |
b90ebc3d | 2775 | unsigned long index = lba_to_map_index(lba); |
44d92694 | 2776 | |
b90ebc3d AM |
2777 | if (index < map_size) |
2778 | set_bit(index, map_storep); | |
44d92694 | 2779 | |
b90ebc3d | 2780 | lba = map_index_to_lba(index + 1); |
44d92694 MP |
2781 | } |
2782 | } | |
2783 | ||
2784 | static void unmap_region(sector_t lba, unsigned int len) | |
2785 | { | |
44d92694 MP |
2786 | sector_t end = lba + len; |
2787 | ||
44d92694 | 2788 | while (lba < end) { |
b90ebc3d | 2789 | unsigned long index = lba_to_map_index(lba); |
44d92694 | 2790 | |
b90ebc3d AM |
2791 | if (lba == map_index_to_lba(index) && |
2792 | lba + scsi_debug_unmap_granularity <= end && | |
2793 | index < map_size) { | |
2794 | clear_bit(index, map_storep); | |
2795 | if (scsi_debug_lbprz) { | |
be1dd78d | 2796 | memset(fake_storep + |
cc34a8e6 AM |
2797 | lba * scsi_debug_sector_size, 0, |
2798 | scsi_debug_sector_size * | |
2799 | scsi_debug_unmap_granularity); | |
b90ebc3d | 2800 | } |
e9926b43 AM |
2801 | if (dif_storep) { |
2802 | memset(dif_storep + lba, 0xff, | |
2803 | sizeof(*dif_storep) * | |
2804 | scsi_debug_unmap_granularity); | |
2805 | } | |
be1dd78d | 2806 | } |
b90ebc3d | 2807 | lba = map_index_to_lba(index + 1); |
44d92694 MP |
2808 | } |
2809 | } | |
2810 | ||
c2248fc9 DG |
2811 | static int |
2812 | resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
1da177e4 | 2813 | { |
c2248fc9 DG |
2814 | u8 *cmd = scp->cmnd; |
2815 | u64 lba; | |
2816 | u32 num; | |
2817 | u32 ei_lba; | |
1da177e4 | 2818 | unsigned long iflags; |
19789100 | 2819 | int ret; |
c2248fc9 | 2820 | bool check_prot; |
1da177e4 | 2821 | |
c2248fc9 DG |
2822 | switch (cmd[0]) { |
2823 | case WRITE_16: | |
2824 | ei_lba = 0; | |
2825 | lba = get_unaligned_be64(cmd + 2); | |
2826 | num = get_unaligned_be32(cmd + 10); | |
2827 | check_prot = true; | |
2828 | break; | |
2829 | case WRITE_10: | |
2830 | ei_lba = 0; | |
2831 | lba = get_unaligned_be32(cmd + 2); | |
2832 | num = get_unaligned_be16(cmd + 7); | |
2833 | check_prot = true; | |
2834 | break; | |
2835 | case WRITE_6: | |
2836 | ei_lba = 0; | |
2837 | lba = (u32)cmd[3] | (u32)cmd[2] << 8 | | |
2838 | (u32)(cmd[1] & 0x1f) << 16; | |
2839 | num = (0 == cmd[4]) ? 256 : cmd[4]; | |
2840 | check_prot = true; | |
2841 | break; | |
2842 | case WRITE_12: | |
2843 | ei_lba = 0; | |
2844 | lba = get_unaligned_be32(cmd + 2); | |
2845 | num = get_unaligned_be32(cmd + 6); | |
2846 | check_prot = true; | |
2847 | break; | |
2848 | case 0x53: /* XDWRITEREAD(10) */ | |
2849 | ei_lba = 0; | |
2850 | lba = get_unaligned_be32(cmd + 2); | |
2851 | num = get_unaligned_be16(cmd + 7); | |
2852 | check_prot = false; | |
2853 | break; | |
2854 | default: /* assume WRITE(32) */ | |
2855 | lba = get_unaligned_be64(cmd + 12); | |
2856 | ei_lba = get_unaligned_be32(cmd + 20); | |
2857 | num = get_unaligned_be32(cmd + 28); | |
2858 | check_prot = false; | |
2859 | break; | |
2860 | } | |
2861 | if (check_prot) { | |
2862 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
2863 | (cmd[1] & 0xe0)) { | |
2864 | mk_sense_invalid_opcode(scp); | |
2865 | return check_condition_result; | |
2866 | } | |
2867 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || | |
2868 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && | |
2869 | (cmd[1] & 0xe0) == 0) | |
2870 | sdev_printk(KERN_ERR, scp->device, "Unprotected WR " | |
2871 | "to DIF device\n"); | |
2872 | } | |
2873 | ||
2874 | /* inline check_device_access_params() */ | |
2875 | if (lba + num > sdebug_capacity) { | |
2876 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
2877 | return check_condition_result; | |
2878 | } | |
2879 | /* transfer length excessive (tie in to block limits VPD page) */ | |
2880 | if (num > sdebug_store_sectors) { | |
2881 | /* needs work to find which cdb byte 'num' comes from */ | |
2882 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
2883 | return check_condition_result; | |
2884 | } | |
1da177e4 | 2885 | |
6c78cc06 AM |
2886 | write_lock_irqsave(&atomic_rw, iflags); |
2887 | ||
c6a44287 | 2888 | /* DIX + T10 DIF */ |
c2248fc9 DG |
2889 | if (scsi_debug_dix && scsi_prot_sg_count(scp)) { |
2890 | int prot_ret = prot_verify_write(scp, lba, num, ei_lba); | |
c6a44287 MP |
2891 | |
2892 | if (prot_ret) { | |
6c78cc06 | 2893 | write_unlock_irqrestore(&atomic_rw, iflags); |
c2248fc9 | 2894 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, prot_ret); |
c6a44287 MP |
2895 | return illegal_condition_result; |
2896 | } | |
2897 | } | |
2898 | ||
c2248fc9 | 2899 | ret = do_device_access(scp, lba, num, true); |
9ed8d3dc | 2900 | if (scsi_debug_lbp()) |
44d92694 | 2901 | map_region(lba, num); |
1da177e4 | 2902 | write_unlock_irqrestore(&atomic_rw, iflags); |
19789100 | 2903 | if (-1 == ret) |
1da177e4 | 2904 | return (DID_ERROR << 16); |
597136ab | 2905 | else if ((ret < (num * scsi_debug_sector_size)) && |
1da177e4 | 2906 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
c2248fc9 | 2907 | sdev_printk(KERN_INFO, scp->device, |
cbf67842 DG |
2908 | "%s: write: cdb indicated=%u, IO sent=%d bytes\n", |
2909 | my_name, num * scsi_debug_sector_size, ret); | |
44d92694 | 2910 | |
c2248fc9 DG |
2911 | if (sdebug_any_injecting_opt) { |
2912 | struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp); | |
2913 | ||
2914 | if (ep->inj_recovered) { | |
2915 | mk_sense_buffer(scp, RECOVERED_ERROR, | |
2916 | THRESHOLD_EXCEEDED, 0); | |
2917 | return check_condition_result; | |
2918 | } else if (ep->inj_dif) { | |
2919 | /* Logical block guard check failed */ | |
2920 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); | |
2921 | return illegal_condition_result; | |
2922 | } else if (ep->inj_dix) { | |
2923 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); | |
2924 | return illegal_condition_result; | |
2925 | } | |
2926 | } | |
44d92694 MP |
2927 | return 0; |
2928 | } | |
2929 | ||
c2248fc9 DG |
2930 | static int |
2931 | resp_write_same(struct scsi_cmnd *scp, u64 lba, u32 num, u32 ei_lba, | |
2932 | bool unmap, bool ndob) | |
44d92694 MP |
2933 | { |
2934 | unsigned long iflags; | |
2935 | unsigned long long i; | |
2936 | int ret; | |
2937 | ||
c2248fc9 | 2938 | ret = check_device_access_params(scp, lba, num); |
44d92694 MP |
2939 | if (ret) |
2940 | return ret; | |
2941 | ||
2942 | write_lock_irqsave(&atomic_rw, iflags); | |
2943 | ||
9ed8d3dc | 2944 | if (unmap && scsi_debug_lbp()) { |
44d92694 MP |
2945 | unmap_region(lba, num); |
2946 | goto out; | |
2947 | } | |
2948 | ||
c2248fc9 DG |
2949 | /* if ndob then zero 1 logical block, else fetch 1 logical block */ |
2950 | if (ndob) { | |
2951 | memset(fake_storep + (lba * scsi_debug_sector_size), 0, | |
2952 | scsi_debug_sector_size); | |
2953 | ret = 0; | |
2954 | } else | |
2955 | ret = fetch_to_dev_buffer(scp, fake_storep + | |
2956 | (lba * scsi_debug_sector_size), | |
2957 | scsi_debug_sector_size); | |
44d92694 MP |
2958 | |
2959 | if (-1 == ret) { | |
2960 | write_unlock_irqrestore(&atomic_rw, iflags); | |
2961 | return (DID_ERROR << 16); | |
2962 | } else if ((ret < (num * scsi_debug_sector_size)) && | |
2963 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
c2248fc9 | 2964 | sdev_printk(KERN_INFO, scp->device, |
cbf67842 DG |
2965 | "%s: %s: cdb indicated=%u, IO sent=%d bytes\n", |
2966 | my_name, "write same", | |
2967 | num * scsi_debug_sector_size, ret); | |
44d92694 MP |
2968 | |
2969 | /* Copy first sector to remaining blocks */ | |
2970 | for (i = 1 ; i < num ; i++) | |
2971 | memcpy(fake_storep + ((lba + i) * scsi_debug_sector_size), | |
2972 | fake_storep + (lba * scsi_debug_sector_size), | |
2973 | scsi_debug_sector_size); | |
2974 | ||
9ed8d3dc | 2975 | if (scsi_debug_lbp()) |
44d92694 MP |
2976 | map_region(lba, num); |
2977 | out: | |
2978 | write_unlock_irqrestore(&atomic_rw, iflags); | |
2979 | ||
1da177e4 LT |
2980 | return 0; |
2981 | } | |
2982 | ||
c2248fc9 DG |
2983 | static int |
2984 | resp_write_same_10(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
2985 | { | |
2986 | u8 *cmd = scp->cmnd; | |
2987 | u32 lba; | |
2988 | u16 num; | |
2989 | u32 ei_lba = 0; | |
2990 | bool unmap = false; | |
2991 | ||
2992 | if (cmd[1] & 0x8) { | |
2993 | if (scsi_debug_lbpws10 == 0) { | |
2994 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 3); | |
2995 | return check_condition_result; | |
2996 | } else | |
2997 | unmap = true; | |
2998 | } | |
2999 | lba = get_unaligned_be32(cmd + 2); | |
3000 | num = get_unaligned_be16(cmd + 7); | |
3001 | if (num > scsi_debug_write_same_length) { | |
3002 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 7, -1); | |
3003 | return check_condition_result; | |
3004 | } | |
3005 | return resp_write_same(scp, lba, num, ei_lba, unmap, false); | |
3006 | } | |
3007 | ||
3008 | static int | |
3009 | resp_write_same_16(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
3010 | { | |
3011 | u8 *cmd = scp->cmnd; | |
3012 | u64 lba; | |
3013 | u32 num; | |
3014 | u32 ei_lba = 0; | |
3015 | bool unmap = false; | |
3016 | bool ndob = false; | |
3017 | ||
3018 | if (cmd[1] & 0x8) { /* UNMAP */ | |
3019 | if (scsi_debug_lbpws == 0) { | |
3020 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 3); | |
3021 | return check_condition_result; | |
3022 | } else | |
3023 | unmap = true; | |
3024 | } | |
3025 | if (cmd[1] & 0x1) /* NDOB (no data-out buffer, assumes zeroes) */ | |
3026 | ndob = true; | |
3027 | lba = get_unaligned_be64(cmd + 2); | |
3028 | num = get_unaligned_be32(cmd + 10); | |
3029 | if (num > scsi_debug_write_same_length) { | |
3030 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 10, -1); | |
3031 | return check_condition_result; | |
3032 | } | |
3033 | return resp_write_same(scp, lba, num, ei_lba, unmap, ndob); | |
3034 | } | |
3035 | ||
38d5c833 DG |
3036 | static int |
3037 | resp_comp_write(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
3038 | { | |
3039 | u8 *cmd = scp->cmnd; | |
3040 | u8 *arr; | |
3041 | u8 *fake_storep_hold; | |
3042 | u64 lba; | |
3043 | u32 dnum; | |
3044 | u32 lb_size = scsi_debug_sector_size; | |
3045 | u8 num; | |
3046 | unsigned long iflags; | |
3047 | int ret; | |
d467d31f | 3048 | int retval = 0; |
38d5c833 | 3049 | |
d467d31f | 3050 | lba = get_unaligned_be64(cmd + 2); |
38d5c833 DG |
3051 | num = cmd[13]; /* 1 to a maximum of 255 logical blocks */ |
3052 | if (0 == num) | |
3053 | return 0; /* degenerate case, not an error */ | |
38d5c833 DG |
3054 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && |
3055 | (cmd[1] & 0xe0)) { | |
3056 | mk_sense_invalid_opcode(scp); | |
3057 | return check_condition_result; | |
3058 | } | |
3059 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || | |
3060 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && | |
3061 | (cmd[1] & 0xe0) == 0) | |
3062 | sdev_printk(KERN_ERR, scp->device, "Unprotected WR " | |
3063 | "to DIF device\n"); | |
3064 | ||
3065 | /* inline check_device_access_params() */ | |
3066 | if (lba + num > sdebug_capacity) { | |
3067 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
3068 | return check_condition_result; | |
3069 | } | |
3070 | /* transfer length excessive (tie in to block limits VPD page) */ | |
3071 | if (num > sdebug_store_sectors) { | |
3072 | /* needs work to find which cdb byte 'num' comes from */ | |
3073 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
3074 | return check_condition_result; | |
3075 | } | |
d467d31f DG |
3076 | dnum = 2 * num; |
3077 | arr = kzalloc(dnum * lb_size, GFP_ATOMIC); | |
3078 | if (NULL == arr) { | |
3079 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
3080 | INSUFF_RES_ASCQ); | |
3081 | return check_condition_result; | |
3082 | } | |
38d5c833 DG |
3083 | |
3084 | write_lock_irqsave(&atomic_rw, iflags); | |
3085 | ||
3086 | /* trick do_device_access() to fetch both compare and write buffers | |
3087 | * from data-in into arr. Safe (atomic) since write_lock held. */ | |
3088 | fake_storep_hold = fake_storep; | |
3089 | fake_storep = arr; | |
3090 | ret = do_device_access(scp, 0, dnum, true); | |
3091 | fake_storep = fake_storep_hold; | |
3092 | if (ret == -1) { | |
d467d31f DG |
3093 | retval = DID_ERROR << 16; |
3094 | goto cleanup; | |
38d5c833 DG |
3095 | } else if ((ret < (dnum * lb_size)) && |
3096 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
3097 | sdev_printk(KERN_INFO, scp->device, "%s: compare_write: cdb " | |
3098 | "indicated=%u, IO sent=%d bytes\n", my_name, | |
3099 | dnum * lb_size, ret); | |
3100 | if (!comp_write_worker(lba, num, arr)) { | |
38d5c833 | 3101 | mk_sense_buffer(scp, MISCOMPARE, MISCOMPARE_VERIFY_ASC, 0); |
d467d31f DG |
3102 | retval = check_condition_result; |
3103 | goto cleanup; | |
38d5c833 DG |
3104 | } |
3105 | if (scsi_debug_lbp()) | |
3106 | map_region(lba, num); | |
d467d31f | 3107 | cleanup: |
38d5c833 | 3108 | write_unlock_irqrestore(&atomic_rw, iflags); |
d467d31f DG |
3109 | kfree(arr); |
3110 | return retval; | |
38d5c833 DG |
3111 | } |
3112 | ||
44d92694 MP |
3113 | struct unmap_block_desc { |
3114 | __be64 lba; | |
3115 | __be32 blocks; | |
3116 | __be32 __reserved; | |
3117 | }; | |
3118 | ||
c2248fc9 DG |
3119 | static int |
3120 | resp_unmap(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
44d92694 MP |
3121 | { |
3122 | unsigned char *buf; | |
3123 | struct unmap_block_desc *desc; | |
3124 | unsigned int i, payload_len, descriptors; | |
3125 | int ret; | |
6c78cc06 | 3126 | unsigned long iflags; |
44d92694 | 3127 | |
44d92694 | 3128 | |
c2248fc9 DG |
3129 | if (!scsi_debug_lbp()) |
3130 | return 0; /* fib and say its done */ | |
3131 | payload_len = get_unaligned_be16(scp->cmnd + 7); | |
3132 | BUG_ON(scsi_bufflen(scp) != payload_len); | |
44d92694 MP |
3133 | |
3134 | descriptors = (payload_len - 8) / 16; | |
c2248fc9 DG |
3135 | if (descriptors > scsi_debug_unmap_max_desc) { |
3136 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 7, -1); | |
3137 | return check_condition_result; | |
3138 | } | |
44d92694 | 3139 | |
c2248fc9 DG |
3140 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); |
3141 | if (!buf) { | |
3142 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
3143 | INSUFF_RES_ASCQ); | |
44d92694 | 3144 | return check_condition_result; |
c2248fc9 | 3145 | } |
44d92694 | 3146 | |
c2248fc9 | 3147 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
44d92694 MP |
3148 | |
3149 | BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2); | |
3150 | BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16); | |
3151 | ||
3152 | desc = (void *)&buf[8]; | |
3153 | ||
6c78cc06 AM |
3154 | write_lock_irqsave(&atomic_rw, iflags); |
3155 | ||
44d92694 MP |
3156 | for (i = 0 ; i < descriptors ; i++) { |
3157 | unsigned long long lba = get_unaligned_be64(&desc[i].lba); | |
3158 | unsigned int num = get_unaligned_be32(&desc[i].blocks); | |
3159 | ||
c2248fc9 | 3160 | ret = check_device_access_params(scp, lba, num); |
44d92694 MP |
3161 | if (ret) |
3162 | goto out; | |
3163 | ||
3164 | unmap_region(lba, num); | |
3165 | } | |
3166 | ||
3167 | ret = 0; | |
3168 | ||
3169 | out: | |
6c78cc06 | 3170 | write_unlock_irqrestore(&atomic_rw, iflags); |
44d92694 MP |
3171 | kfree(buf); |
3172 | ||
3173 | return ret; | |
3174 | } | |
3175 | ||
3176 | #define SDEBUG_GET_LBA_STATUS_LEN 32 | |
3177 | ||
c2248fc9 DG |
3178 | static int |
3179 | resp_get_lba_status(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
44d92694 | 3180 | { |
c2248fc9 DG |
3181 | u8 *cmd = scp->cmnd; |
3182 | u64 lba; | |
3183 | u32 alloc_len, mapped, num; | |
3184 | u8 arr[SDEBUG_GET_LBA_STATUS_LEN]; | |
44d92694 MP |
3185 | int ret; |
3186 | ||
c2248fc9 DG |
3187 | lba = get_unaligned_be64(cmd + 2); |
3188 | alloc_len = get_unaligned_be32(cmd + 10); | |
44d92694 MP |
3189 | |
3190 | if (alloc_len < 24) | |
3191 | return 0; | |
3192 | ||
c2248fc9 | 3193 | ret = check_device_access_params(scp, lba, 1); |
44d92694 MP |
3194 | if (ret) |
3195 | return ret; | |
3196 | ||
c2248fc9 DG |
3197 | if (scsi_debug_lbp()) |
3198 | mapped = map_state(lba, &num); | |
3199 | else { | |
3200 | mapped = 1; | |
3201 | /* following just in case virtual_gb changed */ | |
3202 | sdebug_capacity = get_sdebug_capacity(); | |
3203 | if (sdebug_capacity - lba <= 0xffffffff) | |
3204 | num = sdebug_capacity - lba; | |
3205 | else | |
3206 | num = 0xffffffff; | |
3207 | } | |
44d92694 MP |
3208 | |
3209 | memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN); | |
c2248fc9 DG |
3210 | put_unaligned_be32(20, arr); /* Parameter Data Length */ |
3211 | put_unaligned_be64(lba, arr + 8); /* LBA */ | |
3212 | put_unaligned_be32(num, arr + 16); /* Number of blocks */ | |
3213 | arr[20] = !mapped; /* prov_stat=0: mapped; 1: dealloc */ | |
44d92694 | 3214 | |
c2248fc9 | 3215 | return fill_from_dev_buffer(scp, arr, SDEBUG_GET_LBA_STATUS_LEN); |
44d92694 MP |
3216 | } |
3217 | ||
c65b1445 | 3218 | #define SDEBUG_RLUN_ARR_SZ 256 |
1da177e4 LT |
3219 | |
3220 | static int resp_report_luns(struct scsi_cmnd * scp, | |
3221 | struct sdebug_dev_info * devip) | |
3222 | { | |
3223 | unsigned int alloc_len; | |
22017ed2 DG |
3224 | int lun_cnt, i, upper, num, n, want_wlun, shortish; |
3225 | u64 lun; | |
01123ef4 | 3226 | unsigned char *cmd = scp->cmnd; |
1da177e4 LT |
3227 | int select_report = (int)cmd[2]; |
3228 | struct scsi_lun *one_lun; | |
3229 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; | |
c65b1445 | 3230 | unsigned char * max_addr; |
1da177e4 LT |
3231 | |
3232 | alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); | |
22017ed2 DG |
3233 | shortish = (alloc_len < 4); |
3234 | if (shortish || (select_report > 2)) { | |
3235 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, shortish ? 6 : 2, -1); | |
1da177e4 LT |
3236 | return check_condition_result; |
3237 | } | |
3238 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ | |
3239 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); | |
3240 | lun_cnt = scsi_debug_max_luns; | |
c65b1445 DG |
3241 | if (1 == select_report) |
3242 | lun_cnt = 0; | |
3243 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) | |
3244 | --lun_cnt; | |
22017ed2 DG |
3245 | want_wlun = (select_report > 0) ? 1 : 0; |
3246 | num = lun_cnt + want_wlun; | |
c65b1445 DG |
3247 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; |
3248 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; | |
3249 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / | |
3250 | sizeof(struct scsi_lun)), num); | |
3251 | if (n < num) { | |
22017ed2 | 3252 | want_wlun = 0; |
c65b1445 DG |
3253 | lun_cnt = n; |
3254 | } | |
1da177e4 | 3255 | one_lun = (struct scsi_lun *) &arr[8]; |
c65b1445 DG |
3256 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
3257 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); | |
3258 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); | |
3259 | i++, lun++) { | |
3260 | upper = (lun >> 8) & 0x3f; | |
1da177e4 LT |
3261 | if (upper) |
3262 | one_lun[i].scsi_lun[0] = | |
3263 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); | |
c65b1445 DG |
3264 | one_lun[i].scsi_lun[1] = lun & 0xff; |
3265 | } | |
22017ed2 | 3266 | if (want_wlun) { |
c65b1445 DG |
3267 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; |
3268 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; | |
3269 | i++; | |
1da177e4 | 3270 | } |
c65b1445 | 3271 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
1da177e4 LT |
3272 | return fill_from_dev_buffer(scp, arr, |
3273 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); | |
3274 | } | |
3275 | ||
c639d14e FT |
3276 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
3277 | unsigned int num, struct sdebug_dev_info *devip) | |
3278 | { | |
be4e11be | 3279 | int j; |
c639d14e FT |
3280 | unsigned char *kaddr, *buf; |
3281 | unsigned int offset; | |
c639d14e | 3282 | struct scsi_data_buffer *sdb = scsi_in(scp); |
be4e11be | 3283 | struct sg_mapping_iter miter; |
c639d14e FT |
3284 | |
3285 | /* better not to use temporary buffer. */ | |
3286 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); | |
c5af0db9 | 3287 | if (!buf) { |
22017ed2 DG |
3288 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, |
3289 | INSUFF_RES_ASCQ); | |
c5af0db9 AM |
3290 | return check_condition_result; |
3291 | } | |
c639d14e | 3292 | |
21a61829 | 3293 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
c639d14e FT |
3294 | |
3295 | offset = 0; | |
be4e11be AM |
3296 | sg_miter_start(&miter, sdb->table.sgl, sdb->table.nents, |
3297 | SG_MITER_ATOMIC | SG_MITER_TO_SG); | |
c639d14e | 3298 | |
be4e11be AM |
3299 | while (sg_miter_next(&miter)) { |
3300 | kaddr = miter.addr; | |
3301 | for (j = 0; j < miter.length; j++) | |
3302 | *(kaddr + j) ^= *(buf + offset + j); | |
c639d14e | 3303 | |
be4e11be | 3304 | offset += miter.length; |
c639d14e | 3305 | } |
be4e11be | 3306 | sg_miter_stop(&miter); |
c639d14e FT |
3307 | kfree(buf); |
3308 | ||
be4e11be | 3309 | return 0; |
c639d14e FT |
3310 | } |
3311 | ||
c2248fc9 DG |
3312 | static int |
3313 | resp_xdwriteread_10(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
3314 | { | |
3315 | u8 *cmd = scp->cmnd; | |
3316 | u64 lba; | |
3317 | u32 num; | |
3318 | int errsts; | |
3319 | ||
3320 | if (!scsi_bidi_cmnd(scp)) { | |
3321 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
3322 | INSUFF_RES_ASCQ); | |
3323 | return check_condition_result; | |
3324 | } | |
3325 | errsts = resp_read_dt0(scp, devip); | |
3326 | if (errsts) | |
3327 | return errsts; | |
3328 | if (!(cmd[1] & 0x4)) { /* DISABLE_WRITE is not set */ | |
3329 | errsts = resp_write_dt0(scp, devip); | |
3330 | if (errsts) | |
3331 | return errsts; | |
3332 | } | |
3333 | lba = get_unaligned_be32(cmd + 2); | |
3334 | num = get_unaligned_be16(cmd + 7); | |
3335 | return resp_xdwriteread(scp, lba, num, devip); | |
3336 | } | |
3337 | ||
cbf67842 DG |
3338 | /* When timer or tasklet goes off this function is called. */ |
3339 | static void sdebug_q_cmd_complete(unsigned long indx) | |
1da177e4 | 3340 | { |
cbf67842 DG |
3341 | int qa_indx; |
3342 | int retiring = 0; | |
1da177e4 | 3343 | unsigned long iflags; |
cbf67842 DG |
3344 | struct sdebug_queued_cmd *sqcp; |
3345 | struct scsi_cmnd *scp; | |
3346 | struct sdebug_dev_info *devip; | |
1da177e4 | 3347 | |
cbf67842 DG |
3348 | atomic_inc(&sdebug_completions); |
3349 | qa_indx = indx; | |
3350 | if ((qa_indx < 0) || (qa_indx >= SCSI_DEBUG_CANQUEUE)) { | |
3351 | pr_err("%s: wild qa_indx=%d\n", __func__, qa_indx); | |
1da177e4 LT |
3352 | return; |
3353 | } | |
3354 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
cbf67842 DG |
3355 | sqcp = &queued_arr[qa_indx]; |
3356 | scp = sqcp->a_cmnd; | |
3357 | if (NULL == scp) { | |
3358 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3359 | pr_err("%s: scp is NULL\n", __func__); | |
3360 | return; | |
3361 | } | |
3362 | devip = (struct sdebug_dev_info *)scp->device->hostdata; | |
3363 | if (devip) | |
3364 | atomic_dec(&devip->num_in_q); | |
3365 | else | |
3366 | pr_err("%s: devip=NULL\n", __func__); | |
3367 | if (atomic_read(&retired_max_queue) > 0) | |
3368 | retiring = 1; | |
3369 | ||
3370 | sqcp->a_cmnd = NULL; | |
3371 | if (!test_and_clear_bit(qa_indx, queued_in_use_bm)) { | |
1da177e4 | 3372 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
cbf67842 | 3373 | pr_err("%s: Unexpected completion\n", __func__); |
1da177e4 LT |
3374 | return; |
3375 | } | |
cbf67842 DG |
3376 | |
3377 | if (unlikely(retiring)) { /* user has reduced max_queue */ | |
3378 | int k, retval; | |
3379 | ||
3380 | retval = atomic_read(&retired_max_queue); | |
3381 | if (qa_indx >= retval) { | |
3382 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3383 | pr_err("%s: index %d too large\n", __func__, retval); | |
3384 | return; | |
3385 | } | |
3386 | k = find_last_bit(queued_in_use_bm, retval); | |
3387 | if ((k < scsi_debug_max_queue) || (k == retval)) | |
3388 | atomic_set(&retired_max_queue, 0); | |
3389 | else | |
3390 | atomic_set(&retired_max_queue, k + 1); | |
1da177e4 | 3391 | } |
1da177e4 | 3392 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
cbf67842 | 3393 | scp->scsi_done(scp); /* callback to mid level */ |
1da177e4 LT |
3394 | } |
3395 | ||
cbf67842 DG |
3396 | /* When high resolution timer goes off this function is called. */ |
3397 | static enum hrtimer_restart | |
3398 | sdebug_q_cmd_hrt_complete(struct hrtimer *timer) | |
3399 | { | |
3400 | int qa_indx; | |
3401 | int retiring = 0; | |
3402 | unsigned long iflags; | |
3403 | struct sdebug_hrtimer *sd_hrtp = (struct sdebug_hrtimer *)timer; | |
3404 | struct sdebug_queued_cmd *sqcp; | |
3405 | struct scsi_cmnd *scp; | |
3406 | struct sdebug_dev_info *devip; | |
3407 | ||
3408 | atomic_inc(&sdebug_completions); | |
3409 | qa_indx = sd_hrtp->qa_indx; | |
3410 | if ((qa_indx < 0) || (qa_indx >= SCSI_DEBUG_CANQUEUE)) { | |
3411 | pr_err("%s: wild qa_indx=%d\n", __func__, qa_indx); | |
3412 | goto the_end; | |
3413 | } | |
3414 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
3415 | sqcp = &queued_arr[qa_indx]; | |
3416 | scp = sqcp->a_cmnd; | |
3417 | if (NULL == scp) { | |
3418 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3419 | pr_err("%s: scp is NULL\n", __func__); | |
3420 | goto the_end; | |
3421 | } | |
3422 | devip = (struct sdebug_dev_info *)scp->device->hostdata; | |
3423 | if (devip) | |
3424 | atomic_dec(&devip->num_in_q); | |
3425 | else | |
3426 | pr_err("%s: devip=NULL\n", __func__); | |
3427 | if (atomic_read(&retired_max_queue) > 0) | |
3428 | retiring = 1; | |
3429 | ||
3430 | sqcp->a_cmnd = NULL; | |
3431 | if (!test_and_clear_bit(qa_indx, queued_in_use_bm)) { | |
3432 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3433 | pr_err("%s: Unexpected completion\n", __func__); | |
3434 | goto the_end; | |
3435 | } | |
3436 | ||
3437 | if (unlikely(retiring)) { /* user has reduced max_queue */ | |
3438 | int k, retval; | |
3439 | ||
3440 | retval = atomic_read(&retired_max_queue); | |
3441 | if (qa_indx >= retval) { | |
3442 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3443 | pr_err("%s: index %d too large\n", __func__, retval); | |
3444 | goto the_end; | |
3445 | } | |
3446 | k = find_last_bit(queued_in_use_bm, retval); | |
3447 | if ((k < scsi_debug_max_queue) || (k == retval)) | |
3448 | atomic_set(&retired_max_queue, 0); | |
3449 | else | |
3450 | atomic_set(&retired_max_queue, k + 1); | |
3451 | } | |
3452 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3453 | scp->scsi_done(scp); /* callback to mid level */ | |
3454 | the_end: | |
3455 | return HRTIMER_NORESTART; | |
3456 | } | |
1da177e4 | 3457 | |
8dea0d02 FT |
3458 | static struct sdebug_dev_info * |
3459 | sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags) | |
5cb2fc06 FT |
3460 | { |
3461 | struct sdebug_dev_info *devip; | |
3462 | ||
3463 | devip = kzalloc(sizeof(*devip), flags); | |
3464 | if (devip) { | |
3465 | devip->sdbg_host = sdbg_host; | |
3466 | list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); | |
3467 | } | |
3468 | return devip; | |
3469 | } | |
3470 | ||
1da177e4 LT |
3471 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
3472 | { | |
3473 | struct sdebug_host_info * sdbg_host; | |
3474 | struct sdebug_dev_info * open_devip = NULL; | |
3475 | struct sdebug_dev_info * devip = | |
3476 | (struct sdebug_dev_info *)sdev->hostdata; | |
3477 | ||
3478 | if (devip) | |
3479 | return devip; | |
d1e4c9c5 FT |
3480 | sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
3481 | if (!sdbg_host) { | |
cbf67842 | 3482 | pr_err("%s: Host info NULL\n", __func__); |
1da177e4 LT |
3483 | return NULL; |
3484 | } | |
3485 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { | |
3486 | if ((devip->used) && (devip->channel == sdev->channel) && | |
3487 | (devip->target == sdev->id) && | |
3488 | (devip->lun == sdev->lun)) | |
3489 | return devip; | |
3490 | else { | |
3491 | if ((!devip->used) && (!open_devip)) | |
3492 | open_devip = devip; | |
3493 | } | |
3494 | } | |
5cb2fc06 FT |
3495 | if (!open_devip) { /* try and make a new one */ |
3496 | open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); | |
3497 | if (!open_devip) { | |
1da177e4 | 3498 | printk(KERN_ERR "%s: out of memory at line %d\n", |
cadbd4a5 | 3499 | __func__, __LINE__); |
1da177e4 LT |
3500 | return NULL; |
3501 | } | |
1da177e4 | 3502 | } |
a75869d1 FT |
3503 | |
3504 | open_devip->channel = sdev->channel; | |
3505 | open_devip->target = sdev->id; | |
3506 | open_devip->lun = sdev->lun; | |
3507 | open_devip->sdbg_host = sdbg_host; | |
cbf67842 DG |
3508 | atomic_set(&open_devip->num_in_q, 0); |
3509 | set_bit(SDEBUG_UA_POR, open_devip->uas_bm); | |
c2248fc9 | 3510 | open_devip->used = true; |
a75869d1 | 3511 | return open_devip; |
1da177e4 LT |
3512 | } |
3513 | ||
8dea0d02 | 3514 | static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
1da177e4 | 3515 | { |
8dea0d02 | 3516 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
9cb78c16 | 3517 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %llu>\n", |
8dea0d02 | 3518 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
75ad23bc | 3519 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); |
8dea0d02 FT |
3520 | return 0; |
3521 | } | |
1da177e4 | 3522 | |
8dea0d02 FT |
3523 | static int scsi_debug_slave_configure(struct scsi_device *sdp) |
3524 | { | |
3525 | struct sdebug_dev_info *devip; | |
a34c4e98 | 3526 | |
8dea0d02 | 3527 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
9cb78c16 | 3528 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %llu>\n", |
8dea0d02 FT |
3529 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
3530 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) | |
3531 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; | |
3532 | devip = devInfoReg(sdp); | |
3533 | if (NULL == devip) | |
3534 | return 1; /* no resources, will be marked offline */ | |
c8b09f6f | 3535 | sdp->hostdata = devip; |
6bb5e6e7 | 3536 | blk_queue_max_segment_size(sdp->request_queue, -1U); |
78d4e5a0 DG |
3537 | if (scsi_debug_no_uld) |
3538 | sdp->no_uld_attach = 1; | |
8dea0d02 FT |
3539 | return 0; |
3540 | } | |
3541 | ||
3542 | static void scsi_debug_slave_destroy(struct scsi_device *sdp) | |
3543 | { | |
3544 | struct sdebug_dev_info *devip = | |
3545 | (struct sdebug_dev_info *)sdp->hostdata; | |
a34c4e98 | 3546 | |
1da177e4 | 3547 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
9cb78c16 | 3548 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %llu>\n", |
8dea0d02 FT |
3549 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
3550 | if (devip) { | |
25985edc | 3551 | /* make this slot available for re-use */ |
c2248fc9 | 3552 | devip->used = false; |
8dea0d02 FT |
3553 | sdp->hostdata = NULL; |
3554 | } | |
3555 | } | |
3556 | ||
cbf67842 | 3557 | /* Returns 1 if cmnd found (deletes its timer or tasklet), else returns 0 */ |
8dea0d02 FT |
3558 | static int stop_queued_cmnd(struct scsi_cmnd *cmnd) |
3559 | { | |
3560 | unsigned long iflags; | |
cbf67842 | 3561 | int k, qmax, r_qmax; |
8dea0d02 | 3562 | struct sdebug_queued_cmd *sqcp; |
cbf67842 | 3563 | struct sdebug_dev_info *devip; |
8dea0d02 FT |
3564 | |
3565 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
cbf67842 DG |
3566 | qmax = scsi_debug_max_queue; |
3567 | r_qmax = atomic_read(&retired_max_queue); | |
3568 | if (r_qmax > qmax) | |
3569 | qmax = r_qmax; | |
3570 | for (k = 0; k < qmax; ++k) { | |
3571 | if (test_bit(k, queued_in_use_bm)) { | |
3572 | sqcp = &queued_arr[k]; | |
3573 | if (cmnd == sqcp->a_cmnd) { | |
db525fce DG |
3574 | devip = (struct sdebug_dev_info *) |
3575 | cmnd->device->hostdata; | |
3576 | if (devip) | |
3577 | atomic_dec(&devip->num_in_q); | |
3578 | sqcp->a_cmnd = NULL; | |
3579 | spin_unlock_irqrestore(&queued_arr_lock, | |
3580 | iflags); | |
cbf67842 DG |
3581 | if (scsi_debug_ndelay > 0) { |
3582 | if (sqcp->sd_hrtp) | |
3583 | hrtimer_cancel( | |
3584 | &sqcp->sd_hrtp->hrt); | |
3585 | } else if (scsi_debug_delay > 0) { | |
3586 | if (sqcp->cmnd_timerp) | |
3587 | del_timer_sync( | |
3588 | sqcp->cmnd_timerp); | |
3589 | } else if (scsi_debug_delay < 0) { | |
3590 | if (sqcp->tletp) | |
3591 | tasklet_kill(sqcp->tletp); | |
3592 | } | |
db525fce DG |
3593 | clear_bit(k, queued_in_use_bm); |
3594 | return 1; | |
cbf67842 | 3595 | } |
8dea0d02 FT |
3596 | } |
3597 | } | |
3598 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
db525fce | 3599 | return 0; |
8dea0d02 FT |
3600 | } |
3601 | ||
cbf67842 | 3602 | /* Deletes (stops) timers or tasklets of all queued commands */ |
8dea0d02 FT |
3603 | static void stop_all_queued(void) |
3604 | { | |
3605 | unsigned long iflags; | |
3606 | int k; | |
3607 | struct sdebug_queued_cmd *sqcp; | |
cbf67842 | 3608 | struct sdebug_dev_info *devip; |
8dea0d02 FT |
3609 | |
3610 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
cbf67842 DG |
3611 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
3612 | if (test_bit(k, queued_in_use_bm)) { | |
3613 | sqcp = &queued_arr[k]; | |
3614 | if (sqcp->a_cmnd) { | |
db525fce DG |
3615 | devip = (struct sdebug_dev_info *) |
3616 | sqcp->a_cmnd->device->hostdata; | |
3617 | if (devip) | |
3618 | atomic_dec(&devip->num_in_q); | |
3619 | sqcp->a_cmnd = NULL; | |
3620 | spin_unlock_irqrestore(&queued_arr_lock, | |
3621 | iflags); | |
cbf67842 DG |
3622 | if (scsi_debug_ndelay > 0) { |
3623 | if (sqcp->sd_hrtp) | |
3624 | hrtimer_cancel( | |
3625 | &sqcp->sd_hrtp->hrt); | |
3626 | } else if (scsi_debug_delay > 0) { | |
3627 | if (sqcp->cmnd_timerp) | |
3628 | del_timer_sync( | |
3629 | sqcp->cmnd_timerp); | |
3630 | } else if (scsi_debug_delay < 0) { | |
3631 | if (sqcp->tletp) | |
3632 | tasklet_kill(sqcp->tletp); | |
3633 | } | |
db525fce DG |
3634 | clear_bit(k, queued_in_use_bm); |
3635 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
cbf67842 | 3636 | } |
8dea0d02 FT |
3637 | } |
3638 | } | |
3639 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1da177e4 LT |
3640 | } |
3641 | ||
cbf67842 DG |
3642 | /* Free queued command memory on heap */ |
3643 | static void free_all_queued(void) | |
1da177e4 | 3644 | { |
cbf67842 DG |
3645 | unsigned long iflags; |
3646 | int k; | |
3647 | struct sdebug_queued_cmd *sqcp; | |
3648 | ||
3649 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
3650 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
3651 | sqcp = &queued_arr[k]; | |
3652 | kfree(sqcp->cmnd_timerp); | |
3653 | sqcp->cmnd_timerp = NULL; | |
3654 | kfree(sqcp->tletp); | |
3655 | sqcp->tletp = NULL; | |
3656 | kfree(sqcp->sd_hrtp); | |
3657 | sqcp->sd_hrtp = NULL; | |
3658 | } | |
3659 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1da177e4 LT |
3660 | } |
3661 | ||
cbf67842 | 3662 | static int scsi_debug_abort(struct scsi_cmnd *SCpnt) |
1da177e4 | 3663 | { |
cbf67842 DG |
3664 | ++num_aborts; |
3665 | if (SCpnt) { | |
3666 | if (SCpnt->device && | |
3667 | (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts)) | |
3668 | sdev_printk(KERN_INFO, SCpnt->device, "%s\n", | |
3669 | __func__); | |
3670 | stop_queued_cmnd(SCpnt); | |
3671 | } | |
3672 | return SUCCESS; | |
1da177e4 LT |
3673 | } |
3674 | ||
3675 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) | |
3676 | { | |
3677 | struct sdebug_dev_info * devip; | |
3678 | ||
1da177e4 | 3679 | ++num_dev_resets; |
cbf67842 DG |
3680 | if (SCpnt && SCpnt->device) { |
3681 | struct scsi_device *sdp = SCpnt->device; | |
3682 | ||
3683 | if (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts) | |
3684 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); | |
3685 | devip = devInfoReg(sdp); | |
1da177e4 | 3686 | if (devip) |
cbf67842 DG |
3687 | set_bit(SDEBUG_UA_POR, devip->uas_bm); |
3688 | } | |
3689 | return SUCCESS; | |
3690 | } | |
3691 | ||
3692 | static int scsi_debug_target_reset(struct scsi_cmnd *SCpnt) | |
3693 | { | |
3694 | struct sdebug_host_info *sdbg_host; | |
3695 | struct sdebug_dev_info *devip; | |
3696 | struct scsi_device *sdp; | |
3697 | struct Scsi_Host *hp; | |
3698 | int k = 0; | |
3699 | ||
3700 | ++num_target_resets; | |
3701 | if (!SCpnt) | |
3702 | goto lie; | |
3703 | sdp = SCpnt->device; | |
3704 | if (!sdp) | |
3705 | goto lie; | |
3706 | if (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts) | |
3707 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); | |
3708 | hp = sdp->host; | |
3709 | if (!hp) | |
3710 | goto lie; | |
3711 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); | |
3712 | if (sdbg_host) { | |
3713 | list_for_each_entry(devip, | |
3714 | &sdbg_host->dev_info_list, | |
3715 | dev_list) | |
3716 | if (devip->target == sdp->id) { | |
3717 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
3718 | ++k; | |
3719 | } | |
1da177e4 | 3720 | } |
cbf67842 DG |
3721 | if (SCSI_DEBUG_OPT_RESET_NOISE & scsi_debug_opts) |
3722 | sdev_printk(KERN_INFO, sdp, | |
3723 | "%s: %d device(s) found in target\n", __func__, k); | |
3724 | lie: | |
1da177e4 LT |
3725 | return SUCCESS; |
3726 | } | |
3727 | ||
3728 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) | |
3729 | { | |
3730 | struct sdebug_host_info *sdbg_host; | |
cbf67842 | 3731 | struct sdebug_dev_info *devip; |
1da177e4 LT |
3732 | struct scsi_device * sdp; |
3733 | struct Scsi_Host * hp; | |
cbf67842 | 3734 | int k = 0; |
1da177e4 | 3735 | |
1da177e4 | 3736 | ++num_bus_resets; |
cbf67842 DG |
3737 | if (!(SCpnt && SCpnt->device)) |
3738 | goto lie; | |
3739 | sdp = SCpnt->device; | |
3740 | if (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts) | |
3741 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); | |
3742 | hp = sdp->host; | |
3743 | if (hp) { | |
d1e4c9c5 | 3744 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
1da177e4 | 3745 | if (sdbg_host) { |
cbf67842 | 3746 | list_for_each_entry(devip, |
1da177e4 | 3747 | &sdbg_host->dev_info_list, |
cbf67842 DG |
3748 | dev_list) { |
3749 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
3750 | ++k; | |
3751 | } | |
1da177e4 LT |
3752 | } |
3753 | } | |
cbf67842 DG |
3754 | if (SCSI_DEBUG_OPT_RESET_NOISE & scsi_debug_opts) |
3755 | sdev_printk(KERN_INFO, sdp, | |
3756 | "%s: %d device(s) found in host\n", __func__, k); | |
3757 | lie: | |
1da177e4 LT |
3758 | return SUCCESS; |
3759 | } | |
3760 | ||
3761 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) | |
3762 | { | |
3763 | struct sdebug_host_info * sdbg_host; | |
cbf67842 DG |
3764 | struct sdebug_dev_info *devip; |
3765 | int k = 0; | |
1da177e4 | 3766 | |
1da177e4 | 3767 | ++num_host_resets; |
cbf67842 DG |
3768 | if ((SCpnt->device) && (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts)) |
3769 | sdev_printk(KERN_INFO, SCpnt->device, "%s\n", __func__); | |
1da177e4 LT |
3770 | spin_lock(&sdebug_host_list_lock); |
3771 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
cbf67842 DG |
3772 | list_for_each_entry(devip, &sdbg_host->dev_info_list, |
3773 | dev_list) { | |
3774 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
3775 | ++k; | |
3776 | } | |
1da177e4 LT |
3777 | } |
3778 | spin_unlock(&sdebug_host_list_lock); | |
3779 | stop_all_queued(); | |
cbf67842 DG |
3780 | if (SCSI_DEBUG_OPT_RESET_NOISE & scsi_debug_opts) |
3781 | sdev_printk(KERN_INFO, SCpnt->device, | |
3782 | "%s: %d device(s) found\n", __func__, k); | |
1da177e4 LT |
3783 | return SUCCESS; |
3784 | } | |
3785 | ||
f58b0efb | 3786 | static void __init sdebug_build_parts(unsigned char *ramp, |
5f2578e5 | 3787 | unsigned long store_size) |
1da177e4 LT |
3788 | { |
3789 | struct partition * pp; | |
3790 | int starts[SDEBUG_MAX_PARTS + 2]; | |
3791 | int sectors_per_part, num_sectors, k; | |
3792 | int heads_by_sects, start_sec, end_sec; | |
3793 | ||
3794 | /* assume partition table already zeroed */ | |
f58b0efb | 3795 | if ((scsi_debug_num_parts < 1) || (store_size < 1048576)) |
1da177e4 LT |
3796 | return; |
3797 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { | |
3798 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; | |
cbf67842 DG |
3799 | pr_warn("%s: reducing partitions to %d\n", __func__, |
3800 | SDEBUG_MAX_PARTS); | |
1da177e4 | 3801 | } |
c65b1445 | 3802 | num_sectors = (int)sdebug_store_sectors; |
1da177e4 LT |
3803 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
3804 | / scsi_debug_num_parts; | |
3805 | heads_by_sects = sdebug_heads * sdebug_sectors_per; | |
3806 | starts[0] = sdebug_sectors_per; | |
3807 | for (k = 1; k < scsi_debug_num_parts; ++k) | |
3808 | starts[k] = ((k * sectors_per_part) / heads_by_sects) | |
3809 | * heads_by_sects; | |
3810 | starts[scsi_debug_num_parts] = num_sectors; | |
3811 | starts[scsi_debug_num_parts + 1] = 0; | |
3812 | ||
3813 | ramp[510] = 0x55; /* magic partition markings */ | |
3814 | ramp[511] = 0xAA; | |
3815 | pp = (struct partition *)(ramp + 0x1be); | |
3816 | for (k = 0; starts[k + 1]; ++k, ++pp) { | |
3817 | start_sec = starts[k]; | |
3818 | end_sec = starts[k + 1] - 1; | |
3819 | pp->boot_ind = 0; | |
3820 | ||
3821 | pp->cyl = start_sec / heads_by_sects; | |
3822 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) | |
3823 | / sdebug_sectors_per; | |
3824 | pp->sector = (start_sec % sdebug_sectors_per) + 1; | |
3825 | ||
3826 | pp->end_cyl = end_sec / heads_by_sects; | |
3827 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) | |
3828 | / sdebug_sectors_per; | |
3829 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; | |
3830 | ||
150c3544 AM |
3831 | pp->start_sect = cpu_to_le32(start_sec); |
3832 | pp->nr_sects = cpu_to_le32(end_sec - start_sec + 1); | |
1da177e4 LT |
3833 | pp->sys_ind = 0x83; /* plain Linux partition */ |
3834 | } | |
3835 | } | |
3836 | ||
cbf67842 DG |
3837 | static int |
3838 | schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip, | |
3839 | int scsi_result, int delta_jiff) | |
1da177e4 | 3840 | { |
cbf67842 | 3841 | unsigned long iflags; |
cd62b7da | 3842 | int k, num_in_q, qdepth, inject; |
cbf67842 DG |
3843 | struct sdebug_queued_cmd *sqcp = NULL; |
3844 | struct scsi_device *sdp = cmnd->device; | |
3845 | ||
3846 | if (NULL == cmnd || NULL == devip) { | |
3847 | pr_warn("%s: called with NULL cmnd or devip pointer\n", | |
3848 | __func__); | |
3849 | /* no particularly good error to report back */ | |
3850 | return SCSI_MLQUEUE_HOST_BUSY; | |
3851 | } | |
3852 | if ((scsi_result) && (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
3853 | sdev_printk(KERN_INFO, sdp, "%s: non-zero result=0x%x\n", | |
3854 | __func__, scsi_result); | |
cd62b7da DG |
3855 | if (delta_jiff == 0) |
3856 | goto respond_in_thread; | |
1da177e4 | 3857 | |
cd62b7da | 3858 | /* schedule the response at a later time if resources permit */ |
cbf67842 DG |
3859 | spin_lock_irqsave(&queued_arr_lock, iflags); |
3860 | num_in_q = atomic_read(&devip->num_in_q); | |
3861 | qdepth = cmnd->device->queue_depth; | |
cbf67842 | 3862 | inject = 0; |
cd62b7da DG |
3863 | if ((qdepth > 0) && (num_in_q >= qdepth)) { |
3864 | if (scsi_result) { | |
3865 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3866 | goto respond_in_thread; | |
3867 | } else | |
3868 | scsi_result = device_qfull_result; | |
3869 | } else if ((scsi_debug_every_nth != 0) && | |
3870 | (SCSI_DEBUG_OPT_RARE_TSF & scsi_debug_opts) && | |
3871 | (scsi_result == 0)) { | |
cbf67842 DG |
3872 | if ((num_in_q == (qdepth - 1)) && |
3873 | (atomic_inc_return(&sdebug_a_tsf) >= | |
3874 | abs(scsi_debug_every_nth))) { | |
3875 | atomic_set(&sdebug_a_tsf, 0); | |
3876 | inject = 1; | |
cd62b7da | 3877 | scsi_result = device_qfull_result; |
1da177e4 LT |
3878 | } |
3879 | } | |
1da177e4 | 3880 | |
cd62b7da | 3881 | k = find_first_zero_bit(queued_in_use_bm, scsi_debug_max_queue); |
cbf67842 | 3882 | if (k >= scsi_debug_max_queue) { |
cbf67842 | 3883 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
cd62b7da DG |
3884 | if (scsi_result) |
3885 | goto respond_in_thread; | |
3886 | else if (SCSI_DEBUG_OPT_ALL_TSF & scsi_debug_opts) | |
3887 | scsi_result = device_qfull_result; | |
cbf67842 DG |
3888 | if (SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) |
3889 | sdev_printk(KERN_INFO, sdp, | |
cd62b7da DG |
3890 | "%s: max_queue=%d exceeded, %s\n", |
3891 | __func__, scsi_debug_max_queue, | |
3892 | (scsi_result ? "status: TASK SET FULL" : | |
3893 | "report: host busy")); | |
3894 | if (scsi_result) | |
3895 | goto respond_in_thread; | |
3896 | else | |
cbf67842 DG |
3897 | return SCSI_MLQUEUE_HOST_BUSY; |
3898 | } | |
3899 | __set_bit(k, queued_in_use_bm); | |
3900 | atomic_inc(&devip->num_in_q); | |
3901 | sqcp = &queued_arr[k]; | |
3902 | sqcp->a_cmnd = cmnd; | |
3903 | cmnd->result = scsi_result; | |
3904 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3905 | if (delta_jiff > 0) { | |
3906 | if (NULL == sqcp->cmnd_timerp) { | |
3907 | sqcp->cmnd_timerp = kmalloc(sizeof(struct timer_list), | |
3908 | GFP_ATOMIC); | |
3909 | if (NULL == sqcp->cmnd_timerp) | |
3910 | return SCSI_MLQUEUE_HOST_BUSY; | |
3911 | init_timer(sqcp->cmnd_timerp); | |
1da177e4 | 3912 | } |
cbf67842 DG |
3913 | sqcp->cmnd_timerp->function = sdebug_q_cmd_complete; |
3914 | sqcp->cmnd_timerp->data = k; | |
3915 | sqcp->cmnd_timerp->expires = get_jiffies_64() + delta_jiff; | |
3916 | add_timer(sqcp->cmnd_timerp); | |
3917 | } else if (scsi_debug_ndelay > 0) { | |
3918 | ktime_t kt = ktime_set(0, scsi_debug_ndelay); | |
3919 | struct sdebug_hrtimer *sd_hp = sqcp->sd_hrtp; | |
3920 | ||
3921 | if (NULL == sd_hp) { | |
3922 | sd_hp = kmalloc(sizeof(*sd_hp), GFP_ATOMIC); | |
3923 | if (NULL == sd_hp) | |
3924 | return SCSI_MLQUEUE_HOST_BUSY; | |
3925 | sqcp->sd_hrtp = sd_hp; | |
3926 | hrtimer_init(&sd_hp->hrt, CLOCK_MONOTONIC, | |
3927 | HRTIMER_MODE_REL); | |
3928 | sd_hp->hrt.function = sdebug_q_cmd_hrt_complete; | |
3929 | sd_hp->qa_indx = k; | |
1da177e4 | 3930 | } |
cbf67842 DG |
3931 | hrtimer_start(&sd_hp->hrt, kt, HRTIMER_MODE_REL); |
3932 | } else { /* delay < 0 */ | |
3933 | if (NULL == sqcp->tletp) { | |
3934 | sqcp->tletp = kmalloc(sizeof(*sqcp->tletp), | |
3935 | GFP_ATOMIC); | |
3936 | if (NULL == sqcp->tletp) | |
3937 | return SCSI_MLQUEUE_HOST_BUSY; | |
3938 | tasklet_init(sqcp->tletp, | |
3939 | sdebug_q_cmd_complete, k); | |
3940 | } | |
3941 | if (-1 == delta_jiff) | |
3942 | tasklet_hi_schedule(sqcp->tletp); | |
3943 | else | |
3944 | tasklet_schedule(sqcp->tletp); | |
1da177e4 | 3945 | } |
cd62b7da DG |
3946 | if ((SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) && |
3947 | (scsi_result == device_qfull_result)) | |
cbf67842 DG |
3948 | sdev_printk(KERN_INFO, sdp, |
3949 | "%s: num_in_q=%d +1, %s%s\n", __func__, | |
3950 | num_in_q, (inject ? "<inject> " : ""), | |
3951 | "status: TASK SET FULL"); | |
3952 | return 0; | |
cd62b7da DG |
3953 | |
3954 | respond_in_thread: /* call back to mid-layer using invocation thread */ | |
3955 | cmnd->result = scsi_result; | |
3956 | cmnd->scsi_done(cmnd); | |
3957 | return 0; | |
1da177e4 | 3958 | } |
cbf67842 | 3959 | |
23183910 DG |
3960 | /* Note: The following macros create attribute files in the |
3961 | /sys/module/scsi_debug/parameters directory. Unfortunately this | |
3962 | driver is unaware of a change and cannot trigger auxiliary actions | |
3963 | as it can when the corresponding attribute in the | |
3964 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. | |
3965 | */ | |
c65b1445 | 3966 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
5b94e232 | 3967 | module_param_named(ato, scsi_debug_ato, int, S_IRUGO); |
0759c666 | 3968 | module_param_named(clustering, scsi_debug_clustering, bool, S_IRUGO | S_IWUSR); |
c65b1445 DG |
3969 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); |
3970 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); | |
5b94e232 MP |
3971 | module_param_named(dif, scsi_debug_dif, int, S_IRUGO); |
3972 | module_param_named(dix, scsi_debug_dix, int, S_IRUGO); | |
c65b1445 DG |
3973 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); |
3974 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); | |
23183910 | 3975 | module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); |
68aee7ba | 3976 | module_param_named(guard, scsi_debug_guard, uint, S_IRUGO); |
cbf67842 | 3977 | module_param_named(host_lock, scsi_debug_host_lock, bool, S_IRUGO | S_IWUSR); |
5b94e232 MP |
3978 | module_param_named(lbpu, scsi_debug_lbpu, int, S_IRUGO); |
3979 | module_param_named(lbpws, scsi_debug_lbpws, int, S_IRUGO); | |
3980 | module_param_named(lbpws10, scsi_debug_lbpws10, int, S_IRUGO); | |
be1dd78d | 3981 | module_param_named(lbprz, scsi_debug_lbprz, int, S_IRUGO); |
5b94e232 | 3982 | module_param_named(lowest_aligned, scsi_debug_lowest_aligned, int, S_IRUGO); |
c65b1445 | 3983 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
78d4e5a0 | 3984 | module_param_named(max_queue, scsi_debug_max_queue, int, S_IRUGO | S_IWUSR); |
cbf67842 | 3985 | module_param_named(ndelay, scsi_debug_ndelay, int, S_IRUGO | S_IWUSR); |
c65b1445 | 3986 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); |
78d4e5a0 | 3987 | module_param_named(no_uld, scsi_debug_no_uld, int, S_IRUGO); |
c65b1445 DG |
3988 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); |
3989 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); | |
5b94e232 | 3990 | module_param_named(opt_blks, scsi_debug_opt_blks, int, S_IRUGO); |
c65b1445 | 3991 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); |
5b94e232 | 3992 | module_param_named(physblk_exp, scsi_debug_physblk_exp, int, S_IRUGO); |
c65b1445 | 3993 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); |
d986788b | 3994 | module_param_named(removable, scsi_debug_removable, bool, S_IRUGO | S_IWUSR); |
c65b1445 | 3995 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); |
597136ab | 3996 | module_param_named(sector_size, scsi_debug_sector_size, int, S_IRUGO); |
c2248fc9 | 3997 | module_param_named(strict, scsi_debug_strict, bool, S_IRUGO | S_IWUSR); |
5b94e232 MP |
3998 | module_param_named(unmap_alignment, scsi_debug_unmap_alignment, int, S_IRUGO); |
3999 | module_param_named(unmap_granularity, scsi_debug_unmap_granularity, int, S_IRUGO); | |
44d92694 MP |
4000 | module_param_named(unmap_max_blocks, scsi_debug_unmap_max_blocks, int, S_IRUGO); |
4001 | module_param_named(unmap_max_desc, scsi_debug_unmap_max_desc, int, S_IRUGO); | |
5b94e232 MP |
4002 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); |
4003 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, | |
4004 | S_IRUGO | S_IWUSR); | |
4005 | module_param_named(write_same_length, scsi_debug_write_same_length, int, | |
4006 | S_IRUGO | S_IWUSR); | |
1da177e4 LT |
4007 | |
4008 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); | |
4009 | MODULE_DESCRIPTION("SCSI debug adapter driver"); | |
4010 | MODULE_LICENSE("GPL"); | |
4011 | MODULE_VERSION(SCSI_DEBUG_VERSION); | |
4012 | ||
4013 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); | |
5b94e232 | 4014 | MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)"); |
0759c666 | 4015 | MODULE_PARM_DESC(clustering, "when set enables larger transfers (def=0)"); |
cbf67842 | 4016 | MODULE_PARM_DESC(delay, "response delay (def=1 jiffy); 0:imm, -1,-2:tiny"); |
c2248fc9 | 4017 | MODULE_PARM_DESC(dev_size_mb, "size in MiB of ram shared by devs(def=8)"); |
5b94e232 MP |
4018 | MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); |
4019 | MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); | |
c65b1445 | 4020 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); |
beb87c33 | 4021 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
23183910 | 4022 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
5b94e232 | 4023 | MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)"); |
cbf67842 | 4024 | MODULE_PARM_DESC(host_lock, "use host_lock around all commands (def=0)"); |
5b94e232 MP |
4025 | MODULE_PARM_DESC(lbpu, "enable LBP, support UNMAP command (def=0)"); |
4026 | MODULE_PARM_DESC(lbpws, "enable LBP, support WRITE SAME(16) with UNMAP bit (def=0)"); | |
4027 | MODULE_PARM_DESC(lbpws10, "enable LBP, support WRITE SAME(10) with UNMAP bit (def=0)"); | |
be1dd78d | 4028 | MODULE_PARM_DESC(lbprz, "unmapped blocks return 0 on read (def=1)"); |
5b94e232 | 4029 | MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)"); |
c65b1445 | 4030 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
cbf67842 DG |
4031 | MODULE_PARM_DESC(max_queue, "max number of queued commands (1 to max(def))"); |
4032 | MODULE_PARM_DESC(ndelay, "response delay in nanoseconds (def=0 -> ignore)"); | |
c65b1445 | 4033 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); |
78d4e5a0 | 4034 | MODULE_PARM_DESC(no_uld, "stop ULD (e.g. sd driver) attaching (def=0))"); |
1da177e4 | 4035 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
c65b1445 | 4036 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
5b94e232 | 4037 | MODULE_PARM_DESC(opt_blks, "optimal transfer length in block (def=64)"); |
6f3cbf55 | 4038 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
5b94e232 | 4039 | MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)"); |
1da177e4 | 4040 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
d986788b | 4041 | MODULE_PARM_DESC(removable, "claim to have removable media (def=0)"); |
e46b0344 | 4042 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=6[SPC-4])"); |
ea61fca5 | 4043 | MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)"); |
c2248fc9 | 4044 | MODULE_PARM_DESC(strict, "stricter checks: reserved field in cdb (def=0)"); |
5b94e232 MP |
4045 | MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)"); |
4046 | MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=1)"); | |
6014759c MP |
4047 | MODULE_PARM_DESC(unmap_max_blocks, "max # of blocks can be unmapped in one cmd (def=0xffffffff)"); |
4048 | MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=256)"); | |
c2248fc9 | 4049 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte (GiB) size (def=0 -> use dev_size_mb)"); |
5b94e232 MP |
4050 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
4051 | MODULE_PARM_DESC(write_same_length, "Maximum blocks per WRITE SAME cmd (def=0xffff)"); | |
1da177e4 LT |
4052 | |
4053 | static char sdebug_info[256]; | |
4054 | ||
4055 | static const char * scsi_debug_info(struct Scsi_Host * shp) | |
4056 | { | |
4057 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " | |
4058 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, | |
4059 | scsi_debug_version_date, scsi_debug_dev_size_mb, | |
4060 | scsi_debug_opts); | |
4061 | return sdebug_info; | |
4062 | } | |
4063 | ||
cbf67842 | 4064 | /* 'echo <val> > /proc/scsi/scsi_debug/<host_id>' writes to opts */ |
c8ed555a | 4065 | static int scsi_debug_write_info(struct Scsi_Host *host, char *buffer, int length) |
1da177e4 | 4066 | { |
c8ed555a AV |
4067 | char arr[16]; |
4068 | int opts; | |
4069 | int minLen = length > 15 ? 15 : length; | |
1da177e4 | 4070 | |
c8ed555a AV |
4071 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
4072 | return -EACCES; | |
4073 | memcpy(arr, buffer, minLen); | |
4074 | arr[minLen] = '\0'; | |
4075 | if (1 != sscanf(arr, "%d", &opts)) | |
4076 | return -EINVAL; | |
4077 | scsi_debug_opts = opts; | |
4078 | if (scsi_debug_every_nth != 0) | |
cbf67842 | 4079 | atomic_set(&sdebug_cmnd_count, 0); |
c8ed555a AV |
4080 | return length; |
4081 | } | |
1da177e4 | 4082 | |
cbf67842 DG |
4083 | /* Output seen with 'cat /proc/scsi/scsi_debug/<host_id>'. It will be the |
4084 | * same for each scsi_debug host (if more than one). Some of the counters | |
4085 | * output are not atomics so might be inaccurate in a busy system. */ | |
c8ed555a AV |
4086 | static int scsi_debug_show_info(struct seq_file *m, struct Scsi_Host *host) |
4087 | { | |
cbf67842 DG |
4088 | int f, l; |
4089 | char b[32]; | |
4090 | ||
4091 | if (scsi_debug_every_nth > 0) | |
4092 | snprintf(b, sizeof(b), " (curr:%d)", | |
4093 | ((SCSI_DEBUG_OPT_RARE_TSF & scsi_debug_opts) ? | |
4094 | atomic_read(&sdebug_a_tsf) : | |
4095 | atomic_read(&sdebug_cmnd_count))); | |
4096 | else | |
4097 | b[0] = '\0'; | |
4098 | ||
4099 | seq_printf(m, "scsi_debug adapter driver, version %s [%s]\n" | |
4100 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " | |
4101 | "every_nth=%d%s\n" | |
4102 | "delay=%d, ndelay=%d, max_luns=%d, q_completions=%d\n" | |
4103 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" | |
4104 | "command aborts=%d; RESETs: device=%d, target=%d, bus=%d, " | |
4105 | "host=%d\ndix_reads=%d dix_writes=%d dif_errors=%d " | |
4106 | "usec_in_jiffy=%lu\n", | |
4107 | SCSI_DEBUG_VERSION, scsi_debug_version_date, | |
4108 | scsi_debug_num_tgts, scsi_debug_dev_size_mb, scsi_debug_opts, | |
4109 | scsi_debug_every_nth, b, scsi_debug_delay, scsi_debug_ndelay, | |
4110 | scsi_debug_max_luns, atomic_read(&sdebug_completions), | |
4111 | scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads, | |
4112 | sdebug_sectors_per, num_aborts, num_dev_resets, | |
4113 | num_target_resets, num_bus_resets, num_host_resets, | |
4114 | dix_reads, dix_writes, dif_errors, TICK_NSEC / 1000); | |
4115 | ||
4116 | f = find_first_bit(queued_in_use_bm, scsi_debug_max_queue); | |
4117 | if (f != scsi_debug_max_queue) { | |
4118 | l = find_last_bit(queued_in_use_bm, scsi_debug_max_queue); | |
4119 | seq_printf(m, " %s BUSY: first,last bits set: %d,%d\n", | |
4120 | "queued_in_use_bm", f, l); | |
4121 | } | |
c8ed555a | 4122 | return 0; |
1da177e4 LT |
4123 | } |
4124 | ||
82069379 | 4125 | static ssize_t delay_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4126 | { |
4127 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); | |
4128 | } | |
cbf67842 | 4129 | /* Returns -EBUSY if delay is being changed and commands are queued */ |
82069379 AM |
4130 | static ssize_t delay_store(struct device_driver *ddp, const char *buf, |
4131 | size_t count) | |
1da177e4 | 4132 | { |
cbf67842 DG |
4133 | int delay, res; |
4134 | ||
4135 | if ((count > 0) && (1 == sscanf(buf, "%d", &delay))) { | |
4136 | res = count; | |
4137 | if (scsi_debug_delay != delay) { | |
4138 | unsigned long iflags; | |
4139 | int k; | |
4140 | ||
4141 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
4142 | k = find_first_bit(queued_in_use_bm, | |
4143 | scsi_debug_max_queue); | |
4144 | if (k != scsi_debug_max_queue) | |
4145 | res = -EBUSY; /* have queued commands */ | |
4146 | else { | |
4147 | scsi_debug_delay = delay; | |
4148 | scsi_debug_ndelay = 0; | |
4149 | } | |
4150 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1da177e4 | 4151 | } |
cbf67842 | 4152 | return res; |
1da177e4 LT |
4153 | } |
4154 | return -EINVAL; | |
4155 | } | |
82069379 | 4156 | static DRIVER_ATTR_RW(delay); |
1da177e4 | 4157 | |
cbf67842 DG |
4158 | static ssize_t ndelay_show(struct device_driver *ddp, char *buf) |
4159 | { | |
4160 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ndelay); | |
4161 | } | |
4162 | /* Returns -EBUSY if ndelay is being changed and commands are queued */ | |
4163 | /* If > 0 and accepted then scsi_debug_delay is set to DELAY_OVERRIDDEN */ | |
4164 | static ssize_t ndelay_store(struct device_driver *ddp, const char *buf, | |
4165 | size_t count) | |
4166 | { | |
4167 | unsigned long iflags; | |
4168 | int ndelay, res, k; | |
4169 | ||
4170 | if ((count > 0) && (1 == sscanf(buf, "%d", &ndelay)) && | |
4171 | (ndelay >= 0) && (ndelay < 1000000000)) { | |
4172 | res = count; | |
4173 | if (scsi_debug_ndelay != ndelay) { | |
4174 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
4175 | k = find_first_bit(queued_in_use_bm, | |
4176 | scsi_debug_max_queue); | |
4177 | if (k != scsi_debug_max_queue) | |
4178 | res = -EBUSY; /* have queued commands */ | |
4179 | else { | |
4180 | scsi_debug_ndelay = ndelay; | |
4181 | scsi_debug_delay = ndelay ? DELAY_OVERRIDDEN | |
4182 | : DEF_DELAY; | |
4183 | } | |
4184 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
4185 | } | |
4186 | return res; | |
4187 | } | |
4188 | return -EINVAL; | |
4189 | } | |
4190 | static DRIVER_ATTR_RW(ndelay); | |
4191 | ||
82069379 | 4192 | static ssize_t opts_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4193 | { |
4194 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); | |
4195 | } | |
4196 | ||
82069379 AM |
4197 | static ssize_t opts_store(struct device_driver *ddp, const char *buf, |
4198 | size_t count) | |
1da177e4 LT |
4199 | { |
4200 | int opts; | |
4201 | char work[20]; | |
4202 | ||
4203 | if (1 == sscanf(buf, "%10s", work)) { | |
48a96876 | 4204 | if (0 == strncasecmp(work,"0x", 2)) { |
1da177e4 LT |
4205 | if (1 == sscanf(&work[2], "%x", &opts)) |
4206 | goto opts_done; | |
4207 | } else { | |
4208 | if (1 == sscanf(work, "%d", &opts)) | |
4209 | goto opts_done; | |
4210 | } | |
4211 | } | |
4212 | return -EINVAL; | |
4213 | opts_done: | |
4214 | scsi_debug_opts = opts; | |
817fd66b DG |
4215 | if (SCSI_DEBUG_OPT_RECOVERED_ERR & opts) |
4216 | sdebug_any_injecting_opt = true; | |
4217 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & opts) | |
4218 | sdebug_any_injecting_opt = true; | |
4219 | else if (SCSI_DEBUG_OPT_DIF_ERR & opts) | |
4220 | sdebug_any_injecting_opt = true; | |
4221 | else if (SCSI_DEBUG_OPT_DIX_ERR & opts) | |
4222 | sdebug_any_injecting_opt = true; | |
4223 | else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & opts) | |
4224 | sdebug_any_injecting_opt = true; | |
cbf67842 DG |
4225 | atomic_set(&sdebug_cmnd_count, 0); |
4226 | atomic_set(&sdebug_a_tsf, 0); | |
1da177e4 LT |
4227 | return count; |
4228 | } | |
82069379 | 4229 | static DRIVER_ATTR_RW(opts); |
1da177e4 | 4230 | |
82069379 | 4231 | static ssize_t ptype_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4232 | { |
4233 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); | |
4234 | } | |
82069379 AM |
4235 | static ssize_t ptype_store(struct device_driver *ddp, const char *buf, |
4236 | size_t count) | |
1da177e4 LT |
4237 | { |
4238 | int n; | |
4239 | ||
4240 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4241 | scsi_debug_ptype = n; | |
4242 | return count; | |
4243 | } | |
4244 | return -EINVAL; | |
4245 | } | |
82069379 | 4246 | static DRIVER_ATTR_RW(ptype); |
1da177e4 | 4247 | |
82069379 | 4248 | static ssize_t dsense_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4249 | { |
4250 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); | |
4251 | } | |
82069379 AM |
4252 | static ssize_t dsense_store(struct device_driver *ddp, const char *buf, |
4253 | size_t count) | |
1da177e4 LT |
4254 | { |
4255 | int n; | |
4256 | ||
4257 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4258 | scsi_debug_dsense = n; | |
4259 | return count; | |
4260 | } | |
4261 | return -EINVAL; | |
4262 | } | |
82069379 | 4263 | static DRIVER_ATTR_RW(dsense); |
1da177e4 | 4264 | |
82069379 | 4265 | static ssize_t fake_rw_show(struct device_driver *ddp, char *buf) |
23183910 DG |
4266 | { |
4267 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); | |
4268 | } | |
82069379 AM |
4269 | static ssize_t fake_rw_store(struct device_driver *ddp, const char *buf, |
4270 | size_t count) | |
23183910 DG |
4271 | { |
4272 | int n; | |
4273 | ||
4274 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
cbf67842 DG |
4275 | n = (n > 0); |
4276 | scsi_debug_fake_rw = (scsi_debug_fake_rw > 0); | |
4277 | if (scsi_debug_fake_rw != n) { | |
4278 | if ((0 == n) && (NULL == fake_storep)) { | |
4279 | unsigned long sz = | |
4280 | (unsigned long)scsi_debug_dev_size_mb * | |
4281 | 1048576; | |
4282 | ||
4283 | fake_storep = vmalloc(sz); | |
4284 | if (NULL == fake_storep) { | |
4285 | pr_err("%s: out of memory, 9\n", | |
4286 | __func__); | |
4287 | return -ENOMEM; | |
4288 | } | |
4289 | memset(fake_storep, 0, sz); | |
4290 | } | |
4291 | scsi_debug_fake_rw = n; | |
4292 | } | |
23183910 DG |
4293 | return count; |
4294 | } | |
4295 | return -EINVAL; | |
4296 | } | |
82069379 | 4297 | static DRIVER_ATTR_RW(fake_rw); |
23183910 | 4298 | |
82069379 | 4299 | static ssize_t no_lun_0_show(struct device_driver *ddp, char *buf) |
c65b1445 DG |
4300 | { |
4301 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); | |
4302 | } | |
82069379 AM |
4303 | static ssize_t no_lun_0_store(struct device_driver *ddp, const char *buf, |
4304 | size_t count) | |
c65b1445 DG |
4305 | { |
4306 | int n; | |
4307 | ||
4308 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4309 | scsi_debug_no_lun_0 = n; | |
4310 | return count; | |
4311 | } | |
4312 | return -EINVAL; | |
4313 | } | |
82069379 | 4314 | static DRIVER_ATTR_RW(no_lun_0); |
c65b1445 | 4315 | |
82069379 | 4316 | static ssize_t num_tgts_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4317 | { |
4318 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); | |
4319 | } | |
82069379 AM |
4320 | static ssize_t num_tgts_store(struct device_driver *ddp, const char *buf, |
4321 | size_t count) | |
1da177e4 LT |
4322 | { |
4323 | int n; | |
4324 | ||
4325 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4326 | scsi_debug_num_tgts = n; | |
4327 | sdebug_max_tgts_luns(); | |
4328 | return count; | |
4329 | } | |
4330 | return -EINVAL; | |
4331 | } | |
82069379 | 4332 | static DRIVER_ATTR_RW(num_tgts); |
1da177e4 | 4333 | |
82069379 | 4334 | static ssize_t dev_size_mb_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4335 | { |
4336 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); | |
4337 | } | |
82069379 | 4338 | static DRIVER_ATTR_RO(dev_size_mb); |
1da177e4 | 4339 | |
82069379 | 4340 | static ssize_t num_parts_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4341 | { |
4342 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); | |
4343 | } | |
82069379 | 4344 | static DRIVER_ATTR_RO(num_parts); |
1da177e4 | 4345 | |
82069379 | 4346 | static ssize_t every_nth_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4347 | { |
4348 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); | |
4349 | } | |
82069379 AM |
4350 | static ssize_t every_nth_store(struct device_driver *ddp, const char *buf, |
4351 | size_t count) | |
1da177e4 LT |
4352 | { |
4353 | int nth; | |
4354 | ||
4355 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { | |
4356 | scsi_debug_every_nth = nth; | |
cbf67842 | 4357 | atomic_set(&sdebug_cmnd_count, 0); |
1da177e4 LT |
4358 | return count; |
4359 | } | |
4360 | return -EINVAL; | |
4361 | } | |
82069379 | 4362 | static DRIVER_ATTR_RW(every_nth); |
1da177e4 | 4363 | |
82069379 | 4364 | static ssize_t max_luns_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4365 | { |
4366 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); | |
4367 | } | |
82069379 AM |
4368 | static ssize_t max_luns_store(struct device_driver *ddp, const char *buf, |
4369 | size_t count) | |
1da177e4 LT |
4370 | { |
4371 | int n; | |
4372 | ||
4373 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4374 | scsi_debug_max_luns = n; | |
4375 | sdebug_max_tgts_luns(); | |
4376 | return count; | |
4377 | } | |
4378 | return -EINVAL; | |
4379 | } | |
82069379 | 4380 | static DRIVER_ATTR_RW(max_luns); |
1da177e4 | 4381 | |
82069379 | 4382 | static ssize_t max_queue_show(struct device_driver *ddp, char *buf) |
78d4e5a0 DG |
4383 | { |
4384 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_queue); | |
4385 | } | |
cbf67842 DG |
4386 | /* N.B. max_queue can be changed while there are queued commands. In flight |
4387 | * commands beyond the new max_queue will be completed. */ | |
82069379 AM |
4388 | static ssize_t max_queue_store(struct device_driver *ddp, const char *buf, |
4389 | size_t count) | |
78d4e5a0 | 4390 | { |
cbf67842 DG |
4391 | unsigned long iflags; |
4392 | int n, k; | |
78d4e5a0 DG |
4393 | |
4394 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n > 0) && | |
4395 | (n <= SCSI_DEBUG_CANQUEUE)) { | |
cbf67842 DG |
4396 | spin_lock_irqsave(&queued_arr_lock, iflags); |
4397 | k = find_last_bit(queued_in_use_bm, SCSI_DEBUG_CANQUEUE); | |
78d4e5a0 | 4398 | scsi_debug_max_queue = n; |
cbf67842 DG |
4399 | if (SCSI_DEBUG_CANQUEUE == k) |
4400 | atomic_set(&retired_max_queue, 0); | |
4401 | else if (k >= n) | |
4402 | atomic_set(&retired_max_queue, k + 1); | |
4403 | else | |
4404 | atomic_set(&retired_max_queue, 0); | |
4405 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
78d4e5a0 DG |
4406 | return count; |
4407 | } | |
4408 | return -EINVAL; | |
4409 | } | |
82069379 | 4410 | static DRIVER_ATTR_RW(max_queue); |
78d4e5a0 | 4411 | |
82069379 | 4412 | static ssize_t no_uld_show(struct device_driver *ddp, char *buf) |
78d4e5a0 DG |
4413 | { |
4414 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_uld); | |
4415 | } | |
82069379 | 4416 | static DRIVER_ATTR_RO(no_uld); |
78d4e5a0 | 4417 | |
82069379 | 4418 | static ssize_t scsi_level_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4419 | { |
4420 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); | |
4421 | } | |
82069379 | 4422 | static DRIVER_ATTR_RO(scsi_level); |
1da177e4 | 4423 | |
82069379 | 4424 | static ssize_t virtual_gb_show(struct device_driver *ddp, char *buf) |
c65b1445 DG |
4425 | { |
4426 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); | |
4427 | } | |
82069379 AM |
4428 | static ssize_t virtual_gb_store(struct device_driver *ddp, const char *buf, |
4429 | size_t count) | |
c65b1445 | 4430 | { |
c2248fc9 | 4431 | int n; |
0d01c5df | 4432 | bool changed; |
c65b1445 DG |
4433 | |
4434 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
0d01c5df | 4435 | changed = (scsi_debug_virtual_gb != n); |
c65b1445 | 4436 | scsi_debug_virtual_gb = n; |
28898873 | 4437 | sdebug_capacity = get_sdebug_capacity(); |
0d01c5df DG |
4438 | if (changed) { |
4439 | struct sdebug_host_info *sdhp; | |
4440 | struct sdebug_dev_info *dp; | |
4441 | ||
4bc6b634 | 4442 | spin_lock(&sdebug_host_list_lock); |
0d01c5df DG |
4443 | list_for_each_entry(sdhp, &sdebug_host_list, |
4444 | host_list) { | |
4445 | list_for_each_entry(dp, &sdhp->dev_info_list, | |
4446 | dev_list) { | |
4447 | set_bit(SDEBUG_UA_CAPACITY_CHANGED, | |
4448 | dp->uas_bm); | |
4449 | } | |
4450 | } | |
4bc6b634 | 4451 | spin_unlock(&sdebug_host_list_lock); |
0d01c5df | 4452 | } |
c65b1445 DG |
4453 | return count; |
4454 | } | |
4455 | return -EINVAL; | |
4456 | } | |
82069379 | 4457 | static DRIVER_ATTR_RW(virtual_gb); |
c65b1445 | 4458 | |
82069379 | 4459 | static ssize_t add_host_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4460 | { |
4461 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); | |
4462 | } | |
4463 | ||
82069379 AM |
4464 | static ssize_t add_host_store(struct device_driver *ddp, const char *buf, |
4465 | size_t count) | |
1da177e4 | 4466 | { |
f3df41cf | 4467 | int delta_hosts; |
1da177e4 | 4468 | |
f3df41cf | 4469 | if (sscanf(buf, "%d", &delta_hosts) != 1) |
1da177e4 | 4470 | return -EINVAL; |
1da177e4 LT |
4471 | if (delta_hosts > 0) { |
4472 | do { | |
4473 | sdebug_add_adapter(); | |
4474 | } while (--delta_hosts); | |
4475 | } else if (delta_hosts < 0) { | |
4476 | do { | |
4477 | sdebug_remove_adapter(); | |
4478 | } while (++delta_hosts); | |
4479 | } | |
4480 | return count; | |
4481 | } | |
82069379 | 4482 | static DRIVER_ATTR_RW(add_host); |
1da177e4 | 4483 | |
82069379 | 4484 | static ssize_t vpd_use_hostno_show(struct device_driver *ddp, char *buf) |
23183910 DG |
4485 | { |
4486 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); | |
4487 | } | |
82069379 AM |
4488 | static ssize_t vpd_use_hostno_store(struct device_driver *ddp, const char *buf, |
4489 | size_t count) | |
23183910 DG |
4490 | { |
4491 | int n; | |
4492 | ||
4493 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4494 | scsi_debug_vpd_use_hostno = n; | |
4495 | return count; | |
4496 | } | |
4497 | return -EINVAL; | |
4498 | } | |
82069379 | 4499 | static DRIVER_ATTR_RW(vpd_use_hostno); |
23183910 | 4500 | |
82069379 | 4501 | static ssize_t sector_size_show(struct device_driver *ddp, char *buf) |
597136ab MP |
4502 | { |
4503 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_sector_size); | |
4504 | } | |
82069379 | 4505 | static DRIVER_ATTR_RO(sector_size); |
597136ab | 4506 | |
82069379 | 4507 | static ssize_t dix_show(struct device_driver *ddp, char *buf) |
c6a44287 MP |
4508 | { |
4509 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dix); | |
4510 | } | |
82069379 | 4511 | static DRIVER_ATTR_RO(dix); |
c6a44287 | 4512 | |
82069379 | 4513 | static ssize_t dif_show(struct device_driver *ddp, char *buf) |
c6a44287 MP |
4514 | { |
4515 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dif); | |
4516 | } | |
82069379 | 4517 | static DRIVER_ATTR_RO(dif); |
c6a44287 | 4518 | |
82069379 | 4519 | static ssize_t guard_show(struct device_driver *ddp, char *buf) |
c6a44287 | 4520 | { |
68aee7ba | 4521 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_guard); |
c6a44287 | 4522 | } |
82069379 | 4523 | static DRIVER_ATTR_RO(guard); |
c6a44287 | 4524 | |
82069379 | 4525 | static ssize_t ato_show(struct device_driver *ddp, char *buf) |
c6a44287 MP |
4526 | { |
4527 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ato); | |
4528 | } | |
82069379 | 4529 | static DRIVER_ATTR_RO(ato); |
c6a44287 | 4530 | |
82069379 | 4531 | static ssize_t map_show(struct device_driver *ddp, char *buf) |
44d92694 MP |
4532 | { |
4533 | ssize_t count; | |
4534 | ||
5b94e232 | 4535 | if (!scsi_debug_lbp()) |
44d92694 MP |
4536 | return scnprintf(buf, PAGE_SIZE, "0-%u\n", |
4537 | sdebug_store_sectors); | |
4538 | ||
4539 | count = bitmap_scnlistprintf(buf, PAGE_SIZE, map_storep, map_size); | |
4540 | ||
4541 | buf[count++] = '\n'; | |
4542 | buf[count++] = 0; | |
4543 | ||
4544 | return count; | |
4545 | } | |
82069379 | 4546 | static DRIVER_ATTR_RO(map); |
44d92694 | 4547 | |
82069379 | 4548 | static ssize_t removable_show(struct device_driver *ddp, char *buf) |
d986788b MP |
4549 | { |
4550 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_removable ? 1 : 0); | |
4551 | } | |
82069379 AM |
4552 | static ssize_t removable_store(struct device_driver *ddp, const char *buf, |
4553 | size_t count) | |
d986788b MP |
4554 | { |
4555 | int n; | |
4556 | ||
4557 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4558 | scsi_debug_removable = (n > 0); | |
4559 | return count; | |
4560 | } | |
4561 | return -EINVAL; | |
4562 | } | |
82069379 | 4563 | static DRIVER_ATTR_RW(removable); |
d986788b | 4564 | |
cbf67842 DG |
4565 | static ssize_t host_lock_show(struct device_driver *ddp, char *buf) |
4566 | { | |
4567 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!scsi_debug_host_lock); | |
4568 | } | |
4569 | /* Returns -EBUSY if host_lock is being changed and commands are queued */ | |
4570 | static ssize_t host_lock_store(struct device_driver *ddp, const char *buf, | |
4571 | size_t count) | |
4572 | { | |
4573 | int n, res; | |
4574 | ||
4575 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4576 | bool new_host_lock = (n > 0); | |
4577 | ||
4578 | res = count; | |
4579 | if (new_host_lock != scsi_debug_host_lock) { | |
4580 | unsigned long iflags; | |
4581 | int k; | |
4582 | ||
4583 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
4584 | k = find_first_bit(queued_in_use_bm, | |
4585 | scsi_debug_max_queue); | |
4586 | if (k != scsi_debug_max_queue) | |
4587 | res = -EBUSY; /* have queued commands */ | |
4588 | else | |
4589 | scsi_debug_host_lock = new_host_lock; | |
4590 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
4591 | } | |
4592 | return res; | |
4593 | } | |
4594 | return -EINVAL; | |
4595 | } | |
4596 | static DRIVER_ATTR_RW(host_lock); | |
4597 | ||
c2248fc9 DG |
4598 | static ssize_t strict_show(struct device_driver *ddp, char *buf) |
4599 | { | |
4600 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!scsi_debug_strict); | |
4601 | } | |
4602 | static ssize_t strict_store(struct device_driver *ddp, const char *buf, | |
4603 | size_t count) | |
4604 | { | |
4605 | int n; | |
4606 | ||
4607 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4608 | scsi_debug_strict = (n > 0); | |
4609 | return count; | |
4610 | } | |
4611 | return -EINVAL; | |
4612 | } | |
4613 | static DRIVER_ATTR_RW(strict); | |
4614 | ||
cbf67842 | 4615 | |
82069379 | 4616 | /* Note: The following array creates attribute files in the |
23183910 DG |
4617 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these |
4618 | files (over those found in the /sys/module/scsi_debug/parameters | |
4619 | directory) is that auxiliary actions can be triggered when an attribute | |
4620 | is changed. For example see: sdebug_add_host_store() above. | |
4621 | */ | |
6ecaff7f | 4622 | |
82069379 AM |
4623 | static struct attribute *sdebug_drv_attrs[] = { |
4624 | &driver_attr_delay.attr, | |
4625 | &driver_attr_opts.attr, | |
4626 | &driver_attr_ptype.attr, | |
4627 | &driver_attr_dsense.attr, | |
4628 | &driver_attr_fake_rw.attr, | |
4629 | &driver_attr_no_lun_0.attr, | |
4630 | &driver_attr_num_tgts.attr, | |
4631 | &driver_attr_dev_size_mb.attr, | |
4632 | &driver_attr_num_parts.attr, | |
4633 | &driver_attr_every_nth.attr, | |
4634 | &driver_attr_max_luns.attr, | |
4635 | &driver_attr_max_queue.attr, | |
4636 | &driver_attr_no_uld.attr, | |
4637 | &driver_attr_scsi_level.attr, | |
4638 | &driver_attr_virtual_gb.attr, | |
4639 | &driver_attr_add_host.attr, | |
4640 | &driver_attr_vpd_use_hostno.attr, | |
4641 | &driver_attr_sector_size.attr, | |
4642 | &driver_attr_dix.attr, | |
4643 | &driver_attr_dif.attr, | |
4644 | &driver_attr_guard.attr, | |
4645 | &driver_attr_ato.attr, | |
4646 | &driver_attr_map.attr, | |
4647 | &driver_attr_removable.attr, | |
cbf67842 DG |
4648 | &driver_attr_host_lock.attr, |
4649 | &driver_attr_ndelay.attr, | |
c2248fc9 | 4650 | &driver_attr_strict.attr, |
82069379 AM |
4651 | NULL, |
4652 | }; | |
4653 | ATTRIBUTE_GROUPS(sdebug_drv); | |
1da177e4 | 4654 | |
11ddceca | 4655 | static struct device *pseudo_primary; |
8dea0d02 | 4656 | |
1da177e4 LT |
4657 | static int __init scsi_debug_init(void) |
4658 | { | |
5f2578e5 | 4659 | unsigned long sz; |
1da177e4 LT |
4660 | int host_to_add; |
4661 | int k; | |
6ecaff7f | 4662 | int ret; |
1da177e4 | 4663 | |
cbf67842 DG |
4664 | atomic_set(&sdebug_cmnd_count, 0); |
4665 | atomic_set(&sdebug_completions, 0); | |
4666 | atomic_set(&retired_max_queue, 0); | |
4667 | ||
4668 | if (scsi_debug_ndelay >= 1000000000) { | |
4669 | pr_warn("%s: ndelay must be less than 1 second, ignored\n", | |
4670 | __func__); | |
4671 | scsi_debug_ndelay = 0; | |
4672 | } else if (scsi_debug_ndelay > 0) | |
4673 | scsi_debug_delay = DELAY_OVERRIDDEN; | |
4674 | ||
597136ab MP |
4675 | switch (scsi_debug_sector_size) { |
4676 | case 512: | |
4677 | case 1024: | |
4678 | case 2048: | |
4679 | case 4096: | |
4680 | break; | |
4681 | default: | |
cbf67842 | 4682 | pr_err("%s: invalid sector_size %d\n", __func__, |
597136ab MP |
4683 | scsi_debug_sector_size); |
4684 | return -EINVAL; | |
4685 | } | |
4686 | ||
c6a44287 MP |
4687 | switch (scsi_debug_dif) { |
4688 | ||
4689 | case SD_DIF_TYPE0_PROTECTION: | |
4690 | case SD_DIF_TYPE1_PROTECTION: | |
395cef03 | 4691 | case SD_DIF_TYPE2_PROTECTION: |
c6a44287 MP |
4692 | case SD_DIF_TYPE3_PROTECTION: |
4693 | break; | |
4694 | ||
4695 | default: | |
cbf67842 | 4696 | pr_err("%s: dif must be 0, 1, 2 or 3\n", __func__); |
c6a44287 MP |
4697 | return -EINVAL; |
4698 | } | |
4699 | ||
4700 | if (scsi_debug_guard > 1) { | |
cbf67842 | 4701 | pr_err("%s: guard must be 0 or 1\n", __func__); |
c6a44287 MP |
4702 | return -EINVAL; |
4703 | } | |
4704 | ||
4705 | if (scsi_debug_ato > 1) { | |
cbf67842 | 4706 | pr_err("%s: ato must be 0 or 1\n", __func__); |
c6a44287 MP |
4707 | return -EINVAL; |
4708 | } | |
4709 | ||
ea61fca5 | 4710 | if (scsi_debug_physblk_exp > 15) { |
cbf67842 | 4711 | pr_err("%s: invalid physblk_exp %u\n", __func__, |
ea61fca5 MP |
4712 | scsi_debug_physblk_exp); |
4713 | return -EINVAL; | |
4714 | } | |
4715 | ||
4716 | if (scsi_debug_lowest_aligned > 0x3fff) { | |
cbf67842 | 4717 | pr_err("%s: lowest_aligned too big: %u\n", __func__, |
ea61fca5 MP |
4718 | scsi_debug_lowest_aligned); |
4719 | return -EINVAL; | |
4720 | } | |
4721 | ||
1da177e4 LT |
4722 | if (scsi_debug_dev_size_mb < 1) |
4723 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ | |
5f2578e5 | 4724 | sz = (unsigned long)scsi_debug_dev_size_mb * 1048576; |
597136ab | 4725 | sdebug_store_sectors = sz / scsi_debug_sector_size; |
28898873 | 4726 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 LT |
4727 | |
4728 | /* play around with geometry, don't waste too much on track 0 */ | |
4729 | sdebug_heads = 8; | |
4730 | sdebug_sectors_per = 32; | |
4731 | if (scsi_debug_dev_size_mb >= 16) | |
4732 | sdebug_heads = 32; | |
4733 | else if (scsi_debug_dev_size_mb >= 256) | |
4734 | sdebug_heads = 64; | |
4735 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
4736 | (sdebug_sectors_per * sdebug_heads); | |
4737 | if (sdebug_cylinders_per >= 1024) { | |
4738 | /* other LLDs do this; implies >= 1GB ram disk ... */ | |
4739 | sdebug_heads = 255; | |
4740 | sdebug_sectors_per = 63; | |
4741 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
4742 | (sdebug_sectors_per * sdebug_heads); | |
4743 | } | |
4744 | ||
cbf67842 DG |
4745 | if (0 == scsi_debug_fake_rw) { |
4746 | fake_storep = vmalloc(sz); | |
4747 | if (NULL == fake_storep) { | |
4748 | pr_err("%s: out of memory, 1\n", __func__); | |
4749 | return -ENOMEM; | |
4750 | } | |
4751 | memset(fake_storep, 0, sz); | |
4752 | if (scsi_debug_num_parts > 0) | |
4753 | sdebug_build_parts(fake_storep, sz); | |
1da177e4 | 4754 | } |
1da177e4 | 4755 | |
7cb69d03 | 4756 | if (scsi_debug_dix) { |
c6a44287 MP |
4757 | int dif_size; |
4758 | ||
4759 | dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple); | |
4760 | dif_storep = vmalloc(dif_size); | |
4761 | ||
cbf67842 DG |
4762 | pr_err("%s: dif_storep %u bytes @ %p\n", __func__, dif_size, |
4763 | dif_storep); | |
c6a44287 MP |
4764 | |
4765 | if (dif_storep == NULL) { | |
cbf67842 | 4766 | pr_err("%s: out of mem. (DIX)\n", __func__); |
c6a44287 MP |
4767 | ret = -ENOMEM; |
4768 | goto free_vm; | |
4769 | } | |
4770 | ||
4771 | memset(dif_storep, 0xff, dif_size); | |
4772 | } | |
4773 | ||
5b94e232 MP |
4774 | /* Logical Block Provisioning */ |
4775 | if (scsi_debug_lbp()) { | |
6014759c MP |
4776 | scsi_debug_unmap_max_blocks = |
4777 | clamp(scsi_debug_unmap_max_blocks, 0U, 0xffffffffU); | |
4778 | ||
4779 | scsi_debug_unmap_max_desc = | |
4780 | clamp(scsi_debug_unmap_max_desc, 0U, 256U); | |
4781 | ||
4782 | scsi_debug_unmap_granularity = | |
4783 | clamp(scsi_debug_unmap_granularity, 1U, 0xffffffffU); | |
4784 | ||
4785 | if (scsi_debug_unmap_alignment && | |
ac17078a AM |
4786 | scsi_debug_unmap_granularity <= |
4787 | scsi_debug_unmap_alignment) { | |
cbf67842 | 4788 | pr_err("%s: ERR: unmap_granularity <= unmap_alignment\n", |
44d92694 MP |
4789 | __func__); |
4790 | return -EINVAL; | |
4791 | } | |
4792 | ||
b90ebc3d AM |
4793 | map_size = lba_to_map_index(sdebug_store_sectors - 1) + 1; |
4794 | map_storep = vmalloc(BITS_TO_LONGS(map_size) * sizeof(long)); | |
44d92694 | 4795 | |
cbf67842 | 4796 | pr_info("%s: %lu provisioning blocks\n", __func__, map_size); |
44d92694 MP |
4797 | |
4798 | if (map_storep == NULL) { | |
cbf67842 | 4799 | pr_err("%s: out of mem. (MAP)\n", __func__); |
44d92694 MP |
4800 | ret = -ENOMEM; |
4801 | goto free_vm; | |
4802 | } | |
4803 | ||
b90ebc3d | 4804 | bitmap_zero(map_storep, map_size); |
44d92694 MP |
4805 | |
4806 | /* Map first 1KB for partition table */ | |
4807 | if (scsi_debug_num_parts) | |
4808 | map_region(0, 2); | |
4809 | } | |
4810 | ||
9b906779 NB |
4811 | pseudo_primary = root_device_register("pseudo_0"); |
4812 | if (IS_ERR(pseudo_primary)) { | |
cbf67842 | 4813 | pr_warn("%s: root_device_register() error\n", __func__); |
9b906779 | 4814 | ret = PTR_ERR(pseudo_primary); |
6ecaff7f RD |
4815 | goto free_vm; |
4816 | } | |
4817 | ret = bus_register(&pseudo_lld_bus); | |
4818 | if (ret < 0) { | |
cbf67842 | 4819 | pr_warn("%s: bus_register error: %d\n", __func__, ret); |
6ecaff7f RD |
4820 | goto dev_unreg; |
4821 | } | |
4822 | ret = driver_register(&sdebug_driverfs_driver); | |
4823 | if (ret < 0) { | |
cbf67842 | 4824 | pr_warn("%s: driver_register error: %d\n", __func__, ret); |
6ecaff7f RD |
4825 | goto bus_unreg; |
4826 | } | |
1da177e4 | 4827 | |
1da177e4 LT |
4828 | host_to_add = scsi_debug_add_host; |
4829 | scsi_debug_add_host = 0; | |
4830 | ||
4831 | for (k = 0; k < host_to_add; k++) { | |
4832 | if (sdebug_add_adapter()) { | |
cbf67842 DG |
4833 | pr_err("%s: sdebug_add_adapter failed k=%d\n", |
4834 | __func__, k); | |
1da177e4 LT |
4835 | break; |
4836 | } | |
4837 | } | |
4838 | ||
4839 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
cbf67842 DG |
4840 | pr_info("%s: built %d host(s)\n", __func__, |
4841 | scsi_debug_add_host); | |
1da177e4 LT |
4842 | } |
4843 | return 0; | |
6ecaff7f | 4844 | |
6ecaff7f RD |
4845 | bus_unreg: |
4846 | bus_unregister(&pseudo_lld_bus); | |
4847 | dev_unreg: | |
9b906779 | 4848 | root_device_unregister(pseudo_primary); |
6ecaff7f | 4849 | free_vm: |
44d92694 MP |
4850 | if (map_storep) |
4851 | vfree(map_storep); | |
c6a44287 MP |
4852 | if (dif_storep) |
4853 | vfree(dif_storep); | |
6ecaff7f RD |
4854 | vfree(fake_storep); |
4855 | ||
4856 | return ret; | |
1da177e4 LT |
4857 | } |
4858 | ||
4859 | static void __exit scsi_debug_exit(void) | |
4860 | { | |
4861 | int k = scsi_debug_add_host; | |
4862 | ||
4863 | stop_all_queued(); | |
cbf67842 | 4864 | free_all_queued(); |
1da177e4 LT |
4865 | for (; k; k--) |
4866 | sdebug_remove_adapter(); | |
1da177e4 LT |
4867 | driver_unregister(&sdebug_driverfs_driver); |
4868 | bus_unregister(&pseudo_lld_bus); | |
9b906779 | 4869 | root_device_unregister(pseudo_primary); |
1da177e4 | 4870 | |
c6a44287 MP |
4871 | if (dif_storep) |
4872 | vfree(dif_storep); | |
4873 | ||
1da177e4 LT |
4874 | vfree(fake_storep); |
4875 | } | |
4876 | ||
4877 | device_initcall(scsi_debug_init); | |
4878 | module_exit(scsi_debug_exit); | |
4879 | ||
1da177e4 LT |
4880 | static void sdebug_release_adapter(struct device * dev) |
4881 | { | |
4882 | struct sdebug_host_info *sdbg_host; | |
4883 | ||
4884 | sdbg_host = to_sdebug_host(dev); | |
4885 | kfree(sdbg_host); | |
4886 | } | |
4887 | ||
4888 | static int sdebug_add_adapter(void) | |
4889 | { | |
4890 | int k, devs_per_host; | |
4891 | int error = 0; | |
4892 | struct sdebug_host_info *sdbg_host; | |
8b40228f | 4893 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 | 4894 | |
c65b1445 | 4895 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
1da177e4 LT |
4896 | if (NULL == sdbg_host) { |
4897 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
cadbd4a5 | 4898 | __func__, __LINE__); |
1da177e4 LT |
4899 | return -ENOMEM; |
4900 | } | |
4901 | ||
1da177e4 LT |
4902 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
4903 | ||
4904 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; | |
4905 | for (k = 0; k < devs_per_host; k++) { | |
5cb2fc06 FT |
4906 | sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); |
4907 | if (!sdbg_devinfo) { | |
1da177e4 | 4908 | printk(KERN_ERR "%s: out of memory at line %d\n", |
cadbd4a5 | 4909 | __func__, __LINE__); |
1da177e4 LT |
4910 | error = -ENOMEM; |
4911 | goto clean; | |
4912 | } | |
1da177e4 LT |
4913 | } |
4914 | ||
4915 | spin_lock(&sdebug_host_list_lock); | |
4916 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); | |
4917 | spin_unlock(&sdebug_host_list_lock); | |
4918 | ||
4919 | sdbg_host->dev.bus = &pseudo_lld_bus; | |
9b906779 | 4920 | sdbg_host->dev.parent = pseudo_primary; |
1da177e4 | 4921 | sdbg_host->dev.release = &sdebug_release_adapter; |
71610f55 | 4922 | dev_set_name(&sdbg_host->dev, "adapter%d", scsi_debug_add_host); |
1da177e4 LT |
4923 | |
4924 | error = device_register(&sdbg_host->dev); | |
4925 | ||
4926 | if (error) | |
4927 | goto clean; | |
4928 | ||
4929 | ++scsi_debug_add_host; | |
4930 | return error; | |
4931 | ||
4932 | clean: | |
8b40228f FT |
4933 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
4934 | dev_list) { | |
1da177e4 LT |
4935 | list_del(&sdbg_devinfo->dev_list); |
4936 | kfree(sdbg_devinfo); | |
4937 | } | |
4938 | ||
4939 | kfree(sdbg_host); | |
4940 | return error; | |
4941 | } | |
4942 | ||
4943 | static void sdebug_remove_adapter(void) | |
4944 | { | |
4945 | struct sdebug_host_info * sdbg_host = NULL; | |
4946 | ||
4947 | spin_lock(&sdebug_host_list_lock); | |
4948 | if (!list_empty(&sdebug_host_list)) { | |
4949 | sdbg_host = list_entry(sdebug_host_list.prev, | |
4950 | struct sdebug_host_info, host_list); | |
4951 | list_del(&sdbg_host->host_list); | |
4952 | } | |
4953 | spin_unlock(&sdebug_host_list_lock); | |
4954 | ||
4955 | if (!sdbg_host) | |
4956 | return; | |
4957 | ||
4958 | device_unregister(&sdbg_host->dev); | |
4959 | --scsi_debug_add_host; | |
4960 | } | |
4961 | ||
cbf67842 | 4962 | static int |
db5ed4df | 4963 | sdebug_change_qdepth(struct scsi_device *sdev, int qdepth) |
cbf67842 DG |
4964 | { |
4965 | int num_in_q = 0; | |
cbf67842 DG |
4966 | unsigned long iflags; |
4967 | struct sdebug_dev_info *devip; | |
4968 | ||
4969 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
4970 | devip = (struct sdebug_dev_info *)sdev->hostdata; | |
4971 | if (NULL == devip) { | |
4972 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
4973 | return -ENODEV; | |
4974 | } | |
4975 | num_in_q = atomic_read(&devip->num_in_q); | |
4976 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
c40ecc12 CH |
4977 | |
4978 | if (qdepth < 1) | |
4979 | qdepth = 1; | |
4980 | /* allow to exceed max host queued_arr elements for testing */ | |
4981 | if (qdepth > SCSI_DEBUG_CANQUEUE + 10) | |
4982 | qdepth = SCSI_DEBUG_CANQUEUE + 10; | |
db5ed4df | 4983 | scsi_change_queue_depth(sdev, qdepth); |
c40ecc12 | 4984 | |
cbf67842 | 4985 | if (SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) { |
c40ecc12 CH |
4986 | sdev_printk(KERN_INFO, sdev, |
4987 | "%s: qdepth=%d, num_in_q=%d\n", | |
4988 | __func__, qdepth, num_in_q); | |
cbf67842 DG |
4989 | } |
4990 | return sdev->queue_depth; | |
4991 | } | |
4992 | ||
817fd66b DG |
4993 | static int |
4994 | check_inject(struct scsi_cmnd *scp) | |
4995 | { | |
4996 | struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp); | |
4997 | ||
4998 | memset(ep, 0, sizeof(struct sdebug_scmd_extra_t)); | |
4999 | ||
5000 | if (atomic_inc_return(&sdebug_cmnd_count) >= | |
5001 | abs(scsi_debug_every_nth)) { | |
5002 | atomic_set(&sdebug_cmnd_count, 0); | |
5003 | if (scsi_debug_every_nth < -1) | |
5004 | scsi_debug_every_nth = -1; | |
5005 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) | |
5006 | return 1; /* ignore command causing timeout */ | |
5007 | else if (SCSI_DEBUG_OPT_MAC_TIMEOUT & scsi_debug_opts && | |
5008 | scsi_medium_access_command(scp)) | |
5009 | return 1; /* time out reads and writes */ | |
5010 | if (sdebug_any_injecting_opt) { | |
5011 | int opts = scsi_debug_opts; | |
5012 | ||
5013 | if (SCSI_DEBUG_OPT_RECOVERED_ERR & opts) | |
5014 | ep->inj_recovered = true; | |
5015 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & opts) | |
5016 | ep->inj_transport = true; | |
5017 | else if (SCSI_DEBUG_OPT_DIF_ERR & opts) | |
5018 | ep->inj_dif = true; | |
5019 | else if (SCSI_DEBUG_OPT_DIX_ERR & opts) | |
5020 | ep->inj_dix = true; | |
5021 | else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & opts) | |
5022 | ep->inj_short = true; | |
5023 | } | |
5024 | } | |
5025 | return 0; | |
5026 | } | |
5027 | ||
c2248fc9 DG |
5028 | static int |
5029 | scsi_debug_queuecommand(struct scsi_cmnd *scp) | |
5030 | { | |
5031 | u8 sdeb_i; | |
5032 | struct scsi_device *sdp = scp->device; | |
5033 | const struct opcode_info_t *oip; | |
5034 | const struct opcode_info_t *r_oip; | |
5035 | struct sdebug_dev_info *devip; | |
5036 | u8 *cmd = scp->cmnd; | |
5037 | int (*r_pfp)(struct scsi_cmnd *, struct sdebug_dev_info *); | |
5038 | int k, na; | |
5039 | int errsts = 0; | |
5040 | int errsts_no_connect = DID_NO_CONNECT << 16; | |
5041 | u32 flags; | |
5042 | u16 sa; | |
5043 | u8 opcode = cmd[0]; | |
5044 | bool has_wlun_rl; | |
5045 | bool debug = !!(SCSI_DEBUG_OPT_NOISE & scsi_debug_opts); | |
5046 | ||
5047 | scsi_set_resid(scp, 0); | |
5048 | if (debug && !(SCSI_DEBUG_OPT_NO_CDB_NOISE & scsi_debug_opts)) { | |
5049 | char b[120]; | |
5050 | int n, len, sb; | |
5051 | ||
5052 | len = scp->cmd_len; | |
5053 | sb = (int)sizeof(b); | |
5054 | if (len > 32) | |
5055 | strcpy(b, "too long, over 32 bytes"); | |
5056 | else { | |
5057 | for (k = 0, n = 0; k < len && n < sb; ++k) | |
5058 | n += scnprintf(b + n, sb - n, "%02x ", | |
5059 | (u32)cmd[k]); | |
5060 | } | |
5061 | sdev_printk(KERN_INFO, sdp, "%s: cmd %s\n", my_name, b); | |
5062 | } | |
5063 | has_wlun_rl = (sdp->lun == SAM2_WLUN_REPORT_LUNS); | |
5064 | if ((sdp->lun >= scsi_debug_max_luns) && !has_wlun_rl) | |
5065 | return schedule_resp(scp, NULL, errsts_no_connect, 0); | |
5066 | ||
5067 | sdeb_i = opcode_ind_arr[opcode]; /* fully mapped */ | |
5068 | oip = &opcode_info_arr[sdeb_i]; /* safe if table consistent */ | |
5069 | devip = (struct sdebug_dev_info *)sdp->hostdata; | |
5070 | if (!devip) { | |
5071 | devip = devInfoReg(sdp); | |
5072 | if (NULL == devip) | |
5073 | return schedule_resp(scp, NULL, errsts_no_connect, 0); | |
5074 | } | |
5075 | na = oip->num_attached; | |
5076 | r_pfp = oip->pfp; | |
5077 | if (na) { /* multiple commands with this opcode */ | |
5078 | r_oip = oip; | |
5079 | if (FF_SA & r_oip->flags) { | |
5080 | if (F_SA_LOW & oip->flags) | |
5081 | sa = 0x1f & cmd[1]; | |
5082 | else | |
5083 | sa = get_unaligned_be16(cmd + 8); | |
5084 | for (k = 0; k <= na; oip = r_oip->arrp + k++) { | |
5085 | if (opcode == oip->opcode && sa == oip->sa) | |
5086 | break; | |
5087 | } | |
5088 | } else { /* since no service action only check opcode */ | |
5089 | for (k = 0; k <= na; oip = r_oip->arrp + k++) { | |
5090 | if (opcode == oip->opcode) | |
5091 | break; | |
5092 | } | |
5093 | } | |
5094 | if (k > na) { | |
5095 | if (F_SA_LOW & r_oip->flags) | |
5096 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 4); | |
5097 | else if (F_SA_HIGH & r_oip->flags) | |
5098 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 8, 7); | |
5099 | else | |
5100 | mk_sense_invalid_opcode(scp); | |
5101 | goto check_cond; | |
5102 | } | |
5103 | } /* else (when na==0) we assume the oip is a match */ | |
5104 | flags = oip->flags; | |
5105 | if (F_INV_OP & flags) { | |
5106 | mk_sense_invalid_opcode(scp); | |
5107 | goto check_cond; | |
5108 | } | |
5109 | if (has_wlun_rl && !(F_RL_WLUN_OK & flags)) { | |
5110 | if (debug) | |
5111 | sdev_printk(KERN_INFO, sdp, "scsi_debug: Opcode: " | |
5112 | "0x%x not supported for wlun\n", opcode); | |
5113 | mk_sense_invalid_opcode(scp); | |
5114 | goto check_cond; | |
5115 | } | |
5116 | if (scsi_debug_strict) { /* check cdb against mask */ | |
5117 | u8 rem; | |
5118 | int j; | |
5119 | ||
5120 | for (k = 1; k < oip->len_mask[0] && k < 16; ++k) { | |
5121 | rem = ~oip->len_mask[k] & cmd[k]; | |
5122 | if (rem) { | |
5123 | for (j = 7; j >= 0; --j, rem <<= 1) { | |
5124 | if (0x80 & rem) | |
5125 | break; | |
5126 | } | |
5127 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, k, j); | |
5128 | goto check_cond; | |
5129 | } | |
5130 | } | |
5131 | } | |
5132 | if (!(F_SKIP_UA & flags) && | |
5133 | SDEBUG_NUM_UAS != find_first_bit(devip->uas_bm, SDEBUG_NUM_UAS)) { | |
5134 | errsts = check_readiness(scp, UAS_ONLY, devip); | |
5135 | if (errsts) | |
5136 | goto check_cond; | |
5137 | } | |
5138 | if ((F_M_ACCESS & flags) && devip->stopped) { | |
5139 | mk_sense_buffer(scp, NOT_READY, LOGICAL_UNIT_NOT_READY, 0x2); | |
5140 | if (debug) | |
5141 | sdev_printk(KERN_INFO, sdp, "%s reports: Not ready: " | |
5142 | "%s\n", my_name, "initializing command " | |
5143 | "required"); | |
5144 | errsts = check_condition_result; | |
5145 | goto fini; | |
5146 | } | |
5147 | if (scsi_debug_fake_rw && (F_FAKE_RW & flags)) | |
5148 | goto fini; | |
5149 | if (scsi_debug_every_nth) { | |
5150 | if (check_inject(scp)) | |
5151 | return 0; /* ignore command: make trouble */ | |
5152 | } | |
5153 | if (oip->pfp) /* if this command has a resp_* function, call it */ | |
5154 | errsts = oip->pfp(scp, devip); | |
5155 | else if (r_pfp) /* if leaf function ptr NULL, try the root's */ | |
5156 | errsts = r_pfp(scp, devip); | |
5157 | ||
5158 | fini: | |
5159 | return schedule_resp(scp, devip, errsts, | |
5160 | ((F_DELAY_OVERR & flags) ? 0 : scsi_debug_delay)); | |
5161 | check_cond: | |
5162 | return schedule_resp(scp, devip, check_condition_result, 0); | |
5163 | } | |
5164 | ||
38d5c833 DG |
5165 | static int |
5166 | sdebug_queuecommand_lock_or_not(struct Scsi_Host *shost, struct scsi_cmnd *cmd) | |
5167 | { | |
5168 | if (scsi_debug_host_lock) { | |
5169 | unsigned long iflags; | |
5170 | int rc; | |
5171 | ||
5172 | spin_lock_irqsave(shost->host_lock, iflags); | |
5173 | rc = scsi_debug_queuecommand(cmd); | |
5174 | spin_unlock_irqrestore(shost->host_lock, iflags); | |
5175 | return rc; | |
5176 | } else | |
5177 | return scsi_debug_queuecommand(cmd); | |
5178 | } | |
5179 | ||
9e603ca0 | 5180 | static struct scsi_host_template sdebug_driver_template = { |
c8ed555a AV |
5181 | .show_info = scsi_debug_show_info, |
5182 | .write_info = scsi_debug_write_info, | |
9e603ca0 FT |
5183 | .proc_name = sdebug_proc_name, |
5184 | .name = "SCSI DEBUG", | |
5185 | .info = scsi_debug_info, | |
5186 | .slave_alloc = scsi_debug_slave_alloc, | |
5187 | .slave_configure = scsi_debug_slave_configure, | |
5188 | .slave_destroy = scsi_debug_slave_destroy, | |
5189 | .ioctl = scsi_debug_ioctl, | |
cbf67842 DG |
5190 | .queuecommand = sdebug_queuecommand_lock_or_not, |
5191 | .change_queue_depth = sdebug_change_qdepth, | |
9e603ca0 | 5192 | .eh_abort_handler = scsi_debug_abort, |
9e603ca0 | 5193 | .eh_device_reset_handler = scsi_debug_device_reset, |
cbf67842 DG |
5194 | .eh_target_reset_handler = scsi_debug_target_reset, |
5195 | .eh_bus_reset_handler = scsi_debug_bus_reset, | |
9e603ca0 | 5196 | .eh_host_reset_handler = scsi_debug_host_reset, |
9e603ca0 FT |
5197 | .can_queue = SCSI_DEBUG_CANQUEUE, |
5198 | .this_id = 7, | |
6bb5e6e7 | 5199 | .sg_tablesize = SCSI_MAX_SG_CHAIN_SEGMENTS, |
cbf67842 | 5200 | .cmd_per_lun = DEF_CMD_PER_LUN, |
6bb5e6e7 | 5201 | .max_sectors = -1U, |
9e603ca0 FT |
5202 | .use_clustering = DISABLE_CLUSTERING, |
5203 | .module = THIS_MODULE, | |
c40ecc12 | 5204 | .track_queue_depth = 1, |
817fd66b | 5205 | .cmd_size = sizeof(struct sdebug_scmd_extra_t), |
9e603ca0 FT |
5206 | }; |
5207 | ||
1da177e4 LT |
5208 | static int sdebug_driver_probe(struct device * dev) |
5209 | { | |
22017ed2 | 5210 | int error = 0; |
817fd66b | 5211 | int opts; |
22017ed2 DG |
5212 | struct sdebug_host_info *sdbg_host; |
5213 | struct Scsi_Host *hpnt; | |
c6a44287 | 5214 | int host_prot; |
1da177e4 LT |
5215 | |
5216 | sdbg_host = to_sdebug_host(dev); | |
5217 | ||
78d4e5a0 | 5218 | sdebug_driver_template.can_queue = scsi_debug_max_queue; |
0759c666 AM |
5219 | if (scsi_debug_clustering) |
5220 | sdebug_driver_template.use_clustering = ENABLE_CLUSTERING; | |
78d4e5a0 DG |
5221 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); |
5222 | if (NULL == hpnt) { | |
17c9ff52 | 5223 | pr_err("%s: scsi_host_alloc failed\n", __func__); |
78d4e5a0 | 5224 | error = -ENODEV; |
1da177e4 | 5225 | return error; |
78d4e5a0 | 5226 | } |
1da177e4 LT |
5227 | |
5228 | sdbg_host->shost = hpnt; | |
5229 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; | |
5230 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) | |
5231 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
5232 | else | |
5233 | hpnt->max_id = scsi_debug_num_tgts; | |
c65b1445 | 5234 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
1da177e4 | 5235 | |
c6a44287 MP |
5236 | host_prot = 0; |
5237 | ||
5238 | switch (scsi_debug_dif) { | |
5239 | ||
5240 | case SD_DIF_TYPE1_PROTECTION: | |
5241 | host_prot = SHOST_DIF_TYPE1_PROTECTION; | |
5242 | if (scsi_debug_dix) | |
5243 | host_prot |= SHOST_DIX_TYPE1_PROTECTION; | |
5244 | break; | |
5245 | ||
5246 | case SD_DIF_TYPE2_PROTECTION: | |
5247 | host_prot = SHOST_DIF_TYPE2_PROTECTION; | |
5248 | if (scsi_debug_dix) | |
5249 | host_prot |= SHOST_DIX_TYPE2_PROTECTION; | |
5250 | break; | |
5251 | ||
5252 | case SD_DIF_TYPE3_PROTECTION: | |
5253 | host_prot = SHOST_DIF_TYPE3_PROTECTION; | |
5254 | if (scsi_debug_dix) | |
5255 | host_prot |= SHOST_DIX_TYPE3_PROTECTION; | |
5256 | break; | |
5257 | ||
5258 | default: | |
5259 | if (scsi_debug_dix) | |
5260 | host_prot |= SHOST_DIX_TYPE0_PROTECTION; | |
5261 | break; | |
5262 | } | |
5263 | ||
5264 | scsi_host_set_prot(hpnt, host_prot); | |
5265 | ||
5266 | printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n", | |
5267 | (host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", | |
5268 | (host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", | |
5269 | (host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", | |
5270 | (host_prot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", | |
5271 | (host_prot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", | |
5272 | (host_prot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", | |
5273 | (host_prot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); | |
5274 | ||
5275 | if (scsi_debug_guard == 1) | |
5276 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP); | |
5277 | else | |
5278 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC); | |
5279 | ||
817fd66b DG |
5280 | opts = scsi_debug_opts; |
5281 | if (SCSI_DEBUG_OPT_RECOVERED_ERR & opts) | |
5282 | sdebug_any_injecting_opt = true; | |
5283 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & opts) | |
5284 | sdebug_any_injecting_opt = true; | |
5285 | else if (SCSI_DEBUG_OPT_DIF_ERR & opts) | |
5286 | sdebug_any_injecting_opt = true; | |
5287 | else if (SCSI_DEBUG_OPT_DIX_ERR & opts) | |
5288 | sdebug_any_injecting_opt = true; | |
5289 | else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & opts) | |
5290 | sdebug_any_injecting_opt = true; | |
5291 | ||
1da177e4 LT |
5292 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
5293 | if (error) { | |
cadbd4a5 | 5294 | printk(KERN_ERR "%s: scsi_add_host failed\n", __func__); |
1da177e4 LT |
5295 | error = -ENODEV; |
5296 | scsi_host_put(hpnt); | |
5297 | } else | |
5298 | scsi_scan_host(hpnt); | |
5299 | ||
cbf67842 | 5300 | return error; |
1da177e4 LT |
5301 | } |
5302 | ||
5303 | static int sdebug_driver_remove(struct device * dev) | |
5304 | { | |
1da177e4 | 5305 | struct sdebug_host_info *sdbg_host; |
8b40228f | 5306 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 LT |
5307 | |
5308 | sdbg_host = to_sdebug_host(dev); | |
5309 | ||
5310 | if (!sdbg_host) { | |
5311 | printk(KERN_ERR "%s: Unable to locate host info\n", | |
cadbd4a5 | 5312 | __func__); |
1da177e4 LT |
5313 | return -ENODEV; |
5314 | } | |
5315 | ||
5316 | scsi_remove_host(sdbg_host->shost); | |
5317 | ||
8b40228f FT |
5318 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
5319 | dev_list) { | |
1da177e4 LT |
5320 | list_del(&sdbg_devinfo->dev_list); |
5321 | kfree(sdbg_devinfo); | |
5322 | } | |
5323 | ||
5324 | scsi_host_put(sdbg_host->shost); | |
5325 | return 0; | |
5326 | } | |
5327 | ||
8dea0d02 FT |
5328 | static int pseudo_lld_bus_match(struct device *dev, |
5329 | struct device_driver *dev_driver) | |
1da177e4 | 5330 | { |
8dea0d02 | 5331 | return 1; |
1da177e4 | 5332 | } |
8dea0d02 FT |
5333 | |
5334 | static struct bus_type pseudo_lld_bus = { | |
5335 | .name = "pseudo", | |
5336 | .match = pseudo_lld_bus_match, | |
5337 | .probe = sdebug_driver_probe, | |
5338 | .remove = sdebug_driver_remove, | |
82069379 | 5339 | .drv_groups = sdebug_drv_groups, |
8dea0d02 | 5340 | }; |