Commit | Line | Data |
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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 | |
19c8ead7 EM |
83 | #define TARGET_CHANGED_ASC 0x3f |
84 | #define LUNS_CHANGED_ASCQ 0x0e | |
22017ed2 DG |
85 | #define INSUFF_RES_ASC 0x55 |
86 | #define INSUFF_RES_ASCQ 0x3 | |
cbf67842 DG |
87 | #define POWER_ON_RESET_ASCQ 0x0 |
88 | #define BUS_RESET_ASCQ 0x2 /* scsi bus reset occurred */ | |
89 | #define MODE_CHANGED_ASCQ 0x1 /* mode parameters changed */ | |
22017ed2 | 90 | #define CAPACITY_CHANGED_ASCQ 0x9 |
1da177e4 | 91 | #define SAVING_PARAMS_UNSUP 0x39 |
6f3cbf55 | 92 | #define TRANSPORT_PROBLEM 0x4b |
c65b1445 DG |
93 | #define THRESHOLD_EXCEEDED 0x5d |
94 | #define LOW_POWER_COND_ON 0x5e | |
22017ed2 | 95 | #define MISCOMPARE_VERIFY_ASC 0x1d |
acafd0b9 EM |
96 | #define MICROCODE_CHANGED_ASCQ 0x1 /* with TARGET_CHANGED_ASC */ |
97 | #define MICROCODE_CHANGED_WO_RESET_ASCQ 0x16 | |
1da177e4 | 98 | |
6f3cbf55 DG |
99 | /* Additional Sense Code Qualifier (ASCQ) */ |
100 | #define ACK_NAK_TO 0x3 | |
101 | ||
1da177e4 LT |
102 | |
103 | /* Default values for driver parameters */ | |
104 | #define DEF_NUM_HOST 1 | |
105 | #define DEF_NUM_TGTS 1 | |
106 | #define DEF_MAX_LUNS 1 | |
107 | /* With these defaults, this driver will make 1 host with 1 target | |
108 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. | |
109 | */ | |
5b94e232 | 110 | #define DEF_ATO 1 |
cbf67842 | 111 | #define DEF_DELAY 1 /* if > 0 unit is a jiffy */ |
1da177e4 | 112 | #define DEF_DEV_SIZE_MB 8 |
5b94e232 MP |
113 | #define DEF_DIF 0 |
114 | #define DEF_DIX 0 | |
1da177e4 | 115 | #define DEF_D_SENSE 0 |
5b94e232 | 116 | #define DEF_EVERY_NTH 0 |
23183910 | 117 | #define DEF_FAKE_RW 0 |
c6a44287 | 118 | #define DEF_GUARD 0 |
cbf67842 | 119 | #define DEF_HOST_LOCK 0 |
5b94e232 MP |
120 | #define DEF_LBPU 0 |
121 | #define DEF_LBPWS 0 | |
122 | #define DEF_LBPWS10 0 | |
be1dd78d | 123 | #define DEF_LBPRZ 1 |
ea61fca5 | 124 | #define DEF_LOWEST_ALIGNED 0 |
cbf67842 | 125 | #define DEF_NDELAY 0 /* if > 0 unit is a nanosecond */ |
5b94e232 MP |
126 | #define DEF_NO_LUN_0 0 |
127 | #define DEF_NUM_PARTS 0 | |
128 | #define DEF_OPTS 0 | |
e308b3d1 | 129 | #define DEF_OPT_BLKS 64 |
5b94e232 MP |
130 | #define DEF_PHYSBLK_EXP 0 |
131 | #define DEF_PTYPE 0 | |
d986788b | 132 | #define DEF_REMOVABLE false |
e46b0344 | 133 | #define DEF_SCSI_LEVEL 6 /* INQUIRY, byte2 [6->SPC-4] */ |
5b94e232 MP |
134 | #define DEF_SECTOR_SIZE 512 |
135 | #define DEF_UNMAP_ALIGNMENT 0 | |
136 | #define DEF_UNMAP_GRANULARITY 1 | |
6014759c MP |
137 | #define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF |
138 | #define DEF_UNMAP_MAX_DESC 256 | |
5b94e232 MP |
139 | #define DEF_VIRTUAL_GB 0 |
140 | #define DEF_VPD_USE_HOSTNO 1 | |
141 | #define DEF_WRITESAME_LENGTH 0xFFFF | |
c2248fc9 | 142 | #define DEF_STRICT 0 |
cbf67842 | 143 | #define DELAY_OVERRIDDEN -9999 |
1da177e4 LT |
144 | |
145 | /* bit mask values for scsi_debug_opts */ | |
146 | #define SCSI_DEBUG_OPT_NOISE 1 | |
147 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 | |
148 | #define SCSI_DEBUG_OPT_TIMEOUT 4 | |
149 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 | |
6f3cbf55 | 150 | #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
c6a44287 MP |
151 | #define SCSI_DEBUG_OPT_DIF_ERR 32 |
152 | #define SCSI_DEBUG_OPT_DIX_ERR 64 | |
18a4d0a2 | 153 | #define SCSI_DEBUG_OPT_MAC_TIMEOUT 128 |
cbf67842 DG |
154 | #define SCSI_DEBUG_OPT_SHORT_TRANSFER 0x100 |
155 | #define SCSI_DEBUG_OPT_Q_NOISE 0x200 | |
156 | #define SCSI_DEBUG_OPT_ALL_TSF 0x400 | |
157 | #define SCSI_DEBUG_OPT_RARE_TSF 0x800 | |
158 | #define SCSI_DEBUG_OPT_N_WCE 0x1000 | |
159 | #define SCSI_DEBUG_OPT_RESET_NOISE 0x2000 | |
160 | #define SCSI_DEBUG_OPT_NO_CDB_NOISE 0x4000 | |
161 | #define SCSI_DEBUG_OPT_ALL_NOISE (0x1 | 0x200 | 0x2000) | |
1da177e4 LT |
162 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
163 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
164 | * - a RECOVERED_ERROR is simulated on successful read and write | |
165 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
166 | * - a TRANSPORT_ERROR is simulated on successful read and write |
167 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
168 | * |
169 | * When "every_nth" < 0 then after "- every_nth" commands: | |
170 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
171 | * - a RECOVERED_ERROR is simulated on successful read and write | |
172 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
173 | * - a TRANSPORT_ERROR is simulated on successful read and write |
174 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
175 | * This will continue until some other action occurs (e.g. the user |
176 | * writing a new value (other than -1 or 1) to every_nth via sysfs). | |
177 | */ | |
178 | ||
cbf67842 DG |
179 | /* As indicated in SAM-5 and SPC-4 Unit Attentions (UAs)are returned in |
180 | * priority order. In the subset implemented here lower numbers have higher | |
181 | * priority. The UA numbers should be a sequence starting from 0 with | |
182 | * SDEBUG_NUM_UAS being 1 higher than the highest numbered UA. */ | |
183 | #define SDEBUG_UA_POR 0 /* Power on, reset, or bus device reset */ | |
184 | #define SDEBUG_UA_BUS_RESET 1 | |
185 | #define SDEBUG_UA_MODE_CHANGED 2 | |
0d01c5df | 186 | #define SDEBUG_UA_CAPACITY_CHANGED 3 |
19c8ead7 | 187 | #define SDEBUG_UA_LUNS_CHANGED 4 |
acafd0b9 EM |
188 | #define SDEBUG_UA_MICROCODE_CHANGED 5 /* simulate firmware change */ |
189 | #define SDEBUG_UA_MICROCODE_CHANGED_WO_RESET 6 | |
190 | #define SDEBUG_NUM_UAS 7 | |
cbf67842 DG |
191 | |
192 | /* for check_readiness() */ | |
c2248fc9 DG |
193 | #define UAS_ONLY 1 /* check for UAs only */ |
194 | #define UAS_TUR 0 /* if no UAs then check if media access possible */ | |
cbf67842 | 195 | |
1da177e4 LT |
196 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this |
197 | * sector on read commands: */ | |
198 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ | |
32f7ef73 | 199 | #define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */ |
1da177e4 LT |
200 | |
201 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) | |
202 | * or "peripheral device" addressing (value 0) */ | |
203 | #define SAM2_LUN_ADDRESS_METHOD 0 | |
c65b1445 | 204 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
1da177e4 | 205 | |
cbf67842 DG |
206 | /* SCSI_DEBUG_CANQUEUE is the maximum number of commands that can be queued |
207 | * (for response) at one time. Can be reduced by max_queue option. Command | |
208 | * responses are not queued when delay=0 and ndelay=0. The per-device | |
209 | * DEF_CMD_PER_LUN can be changed via sysfs: | |
210 | * /sys/class/scsi_device/<h:c:t:l>/device/queue_depth but cannot exceed | |
211 | * SCSI_DEBUG_CANQUEUE. */ | |
212 | #define SCSI_DEBUG_CANQUEUE_WORDS 9 /* a WORD is bits in a long */ | |
213 | #define SCSI_DEBUG_CANQUEUE (SCSI_DEBUG_CANQUEUE_WORDS * BITS_PER_LONG) | |
214 | #define DEF_CMD_PER_LUN 255 | |
215 | ||
216 | #if DEF_CMD_PER_LUN > SCSI_DEBUG_CANQUEUE | |
217 | #warning "Expect DEF_CMD_PER_LUN <= SCSI_DEBUG_CANQUEUE" | |
218 | #endif | |
78d4e5a0 | 219 | |
c2248fc9 DG |
220 | /* SCSI opcodes (first byte of cdb) mapped onto these indexes */ |
221 | enum sdeb_opcode_index { | |
222 | SDEB_I_INVALID_OPCODE = 0, | |
223 | SDEB_I_INQUIRY = 1, | |
224 | SDEB_I_REPORT_LUNS = 2, | |
225 | SDEB_I_REQUEST_SENSE = 3, | |
226 | SDEB_I_TEST_UNIT_READY = 4, | |
227 | SDEB_I_MODE_SENSE = 5, /* 6, 10 */ | |
228 | SDEB_I_MODE_SELECT = 6, /* 6, 10 */ | |
229 | SDEB_I_LOG_SENSE = 7, | |
230 | SDEB_I_READ_CAPACITY = 8, /* 10; 16 is in SA_IN(16) */ | |
231 | SDEB_I_READ = 9, /* 6, 10, 12, 16 */ | |
232 | SDEB_I_WRITE = 10, /* 6, 10, 12, 16 */ | |
233 | SDEB_I_START_STOP = 11, | |
234 | SDEB_I_SERV_ACT_IN = 12, /* 12, 16 */ | |
235 | SDEB_I_SERV_ACT_OUT = 13, /* 12, 16 */ | |
236 | SDEB_I_MAINT_IN = 14, | |
237 | SDEB_I_MAINT_OUT = 15, | |
238 | SDEB_I_VERIFY = 16, /* 10 only */ | |
239 | SDEB_I_VARIABLE_LEN = 17, | |
240 | SDEB_I_RESERVE = 18, /* 6, 10 */ | |
241 | SDEB_I_RELEASE = 19, /* 6, 10 */ | |
242 | SDEB_I_ALLOW_REMOVAL = 20, /* PREVENT ALLOW MEDIUM REMOVAL */ | |
243 | SDEB_I_REZERO_UNIT = 21, /* REWIND in SSC */ | |
244 | SDEB_I_ATA_PT = 22, /* 12, 16 */ | |
245 | SDEB_I_SEND_DIAG = 23, | |
246 | SDEB_I_UNMAP = 24, | |
247 | SDEB_I_XDWRITEREAD = 25, /* 10 only */ | |
248 | SDEB_I_WRITE_BUFFER = 26, | |
249 | SDEB_I_WRITE_SAME = 27, /* 10, 16 */ | |
250 | SDEB_I_SYNC_CACHE = 28, /* 10 only */ | |
251 | SDEB_I_COMP_WRITE = 29, | |
252 | SDEB_I_LAST_ELEMENT = 30, /* keep this last */ | |
253 | }; | |
254 | ||
255 | static const unsigned char opcode_ind_arr[256] = { | |
256 | /* 0x0; 0x0->0x1f: 6 byte cdbs */ | |
257 | SDEB_I_TEST_UNIT_READY, SDEB_I_REZERO_UNIT, 0, SDEB_I_REQUEST_SENSE, | |
258 | 0, 0, 0, 0, | |
259 | SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, 0, | |
260 | 0, 0, SDEB_I_INQUIRY, 0, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, | |
261 | SDEB_I_RELEASE, | |
262 | 0, 0, SDEB_I_MODE_SENSE, SDEB_I_START_STOP, 0, SDEB_I_SEND_DIAG, | |
263 | SDEB_I_ALLOW_REMOVAL, 0, | |
264 | /* 0x20; 0x20->0x3f: 10 byte cdbs */ | |
265 | 0, 0, 0, 0, 0, SDEB_I_READ_CAPACITY, 0, 0, | |
266 | SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, SDEB_I_VERIFY, | |
267 | 0, 0, 0, 0, 0, SDEB_I_SYNC_CACHE, 0, 0, | |
268 | 0, 0, 0, SDEB_I_WRITE_BUFFER, 0, 0, 0, 0, | |
269 | /* 0x40; 0x40->0x5f: 10 byte cdbs */ | |
270 | 0, SDEB_I_WRITE_SAME, SDEB_I_UNMAP, 0, 0, 0, 0, 0, | |
271 | 0, 0, 0, 0, 0, SDEB_I_LOG_SENSE, 0, 0, | |
272 | 0, 0, 0, SDEB_I_XDWRITEREAD, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, | |
273 | SDEB_I_RELEASE, | |
274 | 0, 0, SDEB_I_MODE_SENSE, 0, 0, 0, 0, 0, | |
275 | /* 0x60; 0x60->0x7d are reserved */ | |
276 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
277 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
278 | 0, SDEB_I_VARIABLE_LEN, | |
279 | /* 0x80; 0x80->0x9f: 16 byte cdbs */ | |
280 | 0, 0, 0, 0, 0, SDEB_I_ATA_PT, 0, 0, | |
281 | SDEB_I_READ, SDEB_I_COMP_WRITE, SDEB_I_WRITE, 0, 0, 0, 0, 0, | |
282 | 0, 0, 0, SDEB_I_WRITE_SAME, 0, 0, 0, 0, | |
283 | 0, 0, 0, 0, 0, 0, SDEB_I_SERV_ACT_IN, SDEB_I_SERV_ACT_OUT, | |
284 | /* 0xa0; 0xa0->0xbf: 12 byte cdbs */ | |
285 | SDEB_I_REPORT_LUNS, SDEB_I_ATA_PT, 0, SDEB_I_MAINT_IN, | |
286 | SDEB_I_MAINT_OUT, 0, 0, 0, | |
287 | SDEB_I_READ, SDEB_I_SERV_ACT_OUT, SDEB_I_WRITE, SDEB_I_SERV_ACT_IN, | |
288 | 0, 0, 0, 0, | |
289 | 0, 0, 0, 0, 0, 0, 0, 0, | |
290 | 0, 0, 0, 0, 0, 0, 0, 0, | |
291 | /* 0xc0; 0xc0->0xff: vendor specific */ | |
292 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
293 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
294 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
295 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
296 | }; | |
297 | ||
298 | #define F_D_IN 1 | |
299 | #define F_D_OUT 2 | |
300 | #define F_D_OUT_MAYBE 4 /* WRITE SAME, NDOB bit */ | |
301 | #define F_D_UNKN 8 | |
302 | #define F_RL_WLUN_OK 0x10 | |
303 | #define F_SKIP_UA 0x20 | |
304 | #define F_DELAY_OVERR 0x40 | |
305 | #define F_SA_LOW 0x80 /* cdb byte 1, bits 4 to 0 */ | |
306 | #define F_SA_HIGH 0x100 /* as used by variable length cdbs */ | |
307 | #define F_INV_OP 0x200 | |
308 | #define F_FAKE_RW 0x400 | |
309 | #define F_M_ACCESS 0x800 /* media access */ | |
310 | ||
311 | #define FF_RESPOND (F_RL_WLUN_OK | F_SKIP_UA | F_DELAY_OVERR) | |
312 | #define FF_DIRECT_IO (F_M_ACCESS | F_FAKE_RW) | |
313 | #define FF_SA (F_SA_HIGH | F_SA_LOW) | |
314 | ||
315 | struct sdebug_dev_info; | |
c2248fc9 DG |
316 | static int resp_inquiry(struct scsi_cmnd *, struct sdebug_dev_info *); |
317 | static int resp_report_luns(struct scsi_cmnd *, struct sdebug_dev_info *); | |
318 | static int resp_requests(struct scsi_cmnd *, struct sdebug_dev_info *); | |
319 | static int resp_mode_sense(struct scsi_cmnd *, struct sdebug_dev_info *); | |
320 | static int resp_mode_select(struct scsi_cmnd *, struct sdebug_dev_info *); | |
321 | static int resp_log_sense(struct scsi_cmnd *, struct sdebug_dev_info *); | |
322 | static int resp_readcap(struct scsi_cmnd *, struct sdebug_dev_info *); | |
323 | static int resp_read_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); | |
324 | static int resp_write_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); | |
325 | static int resp_start_stop(struct scsi_cmnd *, struct sdebug_dev_info *); | |
326 | static int resp_readcap16(struct scsi_cmnd *, struct sdebug_dev_info *); | |
327 | static int resp_get_lba_status(struct scsi_cmnd *, struct sdebug_dev_info *); | |
328 | static int resp_report_tgtpgs(struct scsi_cmnd *, struct sdebug_dev_info *); | |
329 | static int resp_unmap(struct scsi_cmnd *, struct sdebug_dev_info *); | |
38d5c833 DG |
330 | static int resp_rsup_opcodes(struct scsi_cmnd *, struct sdebug_dev_info *); |
331 | static int resp_rsup_tmfs(struct scsi_cmnd *, struct sdebug_dev_info *); | |
c2248fc9 DG |
332 | static int resp_write_same_10(struct scsi_cmnd *, struct sdebug_dev_info *); |
333 | static int resp_write_same_16(struct scsi_cmnd *, struct sdebug_dev_info *); | |
334 | static int resp_xdwriteread_10(struct scsi_cmnd *, struct sdebug_dev_info *); | |
38d5c833 | 335 | static int resp_comp_write(struct scsi_cmnd *, struct sdebug_dev_info *); |
acafd0b9 | 336 | static int resp_write_buffer(struct scsi_cmnd *, struct sdebug_dev_info *); |
c2248fc9 DG |
337 | |
338 | struct opcode_info_t { | |
339 | u8 num_attached; /* 0 if this is it (i.e. a leaf); use 0xff | |
340 | * for terminating element */ | |
341 | u8 opcode; /* if num_attached > 0, preferred */ | |
342 | u16 sa; /* service action */ | |
343 | u32 flags; /* OR-ed set of SDEB_F_* */ | |
344 | int (*pfp)(struct scsi_cmnd *, struct sdebug_dev_info *); | |
345 | const struct opcode_info_t *arrp; /* num_attached elements or NULL */ | |
346 | u8 len_mask[16]; /* len=len_mask[0], then mask for cdb[1]... */ | |
347 | /* ignore cdb bytes after position 15 */ | |
348 | }; | |
349 | ||
350 | static const struct opcode_info_t msense_iarr[1] = { | |
351 | {0, 0x1a, 0, F_D_IN, NULL, NULL, | |
352 | {6, 0xe8, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
353 | }; | |
354 | ||
355 | static const struct opcode_info_t mselect_iarr[1] = { | |
356 | {0, 0x15, 0, F_D_OUT, NULL, NULL, | |
357 | {6, 0xf1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
358 | }; | |
359 | ||
360 | static const struct opcode_info_t read_iarr[3] = { | |
361 | {0, 0x28, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL,/* READ(10) */ | |
362 | {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, | |
363 | 0, 0, 0, 0} }, | |
364 | {0, 0x8, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL, /* READ(6) */ | |
365 | {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
366 | {0, 0xa8, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL,/* READ(12) */ | |
367 | {12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, | |
368 | 0xc7, 0, 0, 0, 0} }, | |
369 | }; | |
370 | ||
371 | static const struct opcode_info_t write_iarr[3] = { | |
372 | {0, 0x2a, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 10 */ | |
373 | {10, 0xfb, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, | |
374 | 0, 0, 0, 0} }, | |
375 | {0, 0xa, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 6 */ | |
376 | {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
377 | {0, 0xaa, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 12 */ | |
378 | {12, 0xfb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, | |
379 | 0xc7, 0, 0, 0, 0} }, | |
380 | }; | |
381 | ||
382 | static const struct opcode_info_t sa_in_iarr[1] = { | |
383 | {0, 0x9e, 0x12, F_SA_LOW | F_D_IN, resp_get_lba_status, NULL, | |
384 | {16, 0x12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
385 | 0xff, 0xff, 0xff, 0, 0xc7} }, | |
386 | }; | |
387 | ||
388 | static const struct opcode_info_t vl_iarr[1] = { /* VARIABLE LENGTH */ | |
389 | {0, 0x7f, 0xb, F_SA_HIGH | F_D_OUT | FF_DIRECT_IO, resp_write_dt0, | |
390 | NULL, {32, 0xc7, 0, 0, 0, 0, 0x1f, 0x18, 0x0, 0xb, 0xfa, | |
391 | 0, 0xff, 0xff, 0xff, 0xff} }, /* WRITE(32) */ | |
392 | }; | |
393 | ||
394 | static const struct opcode_info_t maint_in_iarr[2] = { | |
38d5c833 | 395 | {0, 0xa3, 0xc, F_SA_LOW | F_D_IN, resp_rsup_opcodes, NULL, |
c2248fc9 DG |
396 | {12, 0xc, 0x87, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, |
397 | 0xc7, 0, 0, 0, 0} }, | |
38d5c833 | 398 | {0, 0xa3, 0xd, F_SA_LOW | F_D_IN, resp_rsup_tmfs, NULL, |
c2248fc9 DG |
399 | {12, 0xd, 0x80, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, |
400 | 0, 0} }, | |
401 | }; | |
402 | ||
403 | static const struct opcode_info_t write_same_iarr[1] = { | |
404 | {0, 0x93, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, resp_write_same_16, NULL, | |
405 | {16, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
406 | 0xff, 0xff, 0xff, 0x1f, 0xc7} }, | |
407 | }; | |
408 | ||
409 | static const struct opcode_info_t reserve_iarr[1] = { | |
410 | {0, 0x16, 0, F_D_OUT, NULL, NULL, /* RESERVE(6) */ | |
411 | {6, 0x1f, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
412 | }; | |
413 | ||
414 | static const struct opcode_info_t release_iarr[1] = { | |
415 | {0, 0x17, 0, F_D_OUT, NULL, NULL, /* RELEASE(6) */ | |
416 | {6, 0x1f, 0xff, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
417 | }; | |
418 | ||
419 | ||
420 | /* This array is accessed via SDEB_I_* values. Make sure all are mapped, | |
421 | * plus the terminating elements for logic that scans this table such as | |
422 | * REPORT SUPPORTED OPERATION CODES. */ | |
423 | static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEMENT + 1] = { | |
424 | /* 0 */ | |
425 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, | |
426 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
427 | {0, 0x12, 0, FF_RESPOND | F_D_IN, resp_inquiry, NULL, | |
428 | {6, 0xe3, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
429 | {0, 0xa0, 0, FF_RESPOND | F_D_IN, resp_report_luns, NULL, | |
430 | {12, 0xe3, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, | |
431 | 0, 0} }, | |
432 | {0, 0x3, 0, FF_RESPOND | F_D_IN, resp_requests, NULL, | |
433 | {6, 0xe1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
434 | {0, 0x0, 0, F_M_ACCESS | F_RL_WLUN_OK, NULL, NULL,/* TEST UNIT READY */ | |
435 | {6, 0, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
436 | {1, 0x5a, 0, F_D_IN, resp_mode_sense, msense_iarr, | |
437 | {10, 0xf8, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, | |
438 | 0} }, | |
439 | {1, 0x55, 0, F_D_OUT, resp_mode_select, mselect_iarr, | |
440 | {10, 0xf1, 0, 0, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, | |
441 | {0, 0x4d, 0, F_D_IN, resp_log_sense, NULL, | |
442 | {10, 0xe3, 0xff, 0xff, 0, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, | |
443 | 0, 0, 0} }, | |
444 | {0, 0x25, 0, F_D_IN, resp_readcap, NULL, | |
445 | {10, 0xe1, 0xff, 0xff, 0xff, 0xff, 0, 0, 0x1, 0xc7, 0, 0, 0, 0, | |
446 | 0, 0} }, | |
447 | {3, 0x88, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, read_iarr, | |
448 | {16, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
449 | 0xff, 0xff, 0xff, 0x9f, 0xc7} }, /* READ(16) */ | |
450 | /* 10 */ | |
451 | {3, 0x8a, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, write_iarr, | |
452 | {16, 0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
453 | 0xff, 0xff, 0xff, 0x9f, 0xc7} }, /* WRITE(16) */ | |
454 | {0, 0x1b, 0, 0, resp_start_stop, NULL, /* START STOP UNIT */ | |
455 | {6, 0x1, 0, 0xf, 0xf7, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
456 | {1, 0x9e, 0x10, F_SA_LOW | F_D_IN, resp_readcap16, sa_in_iarr, | |
457 | {16, 0x10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
458 | 0xff, 0xff, 0xff, 0x1, 0xc7} }, /* READ CAPACITY(16) */ | |
459 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* SA OUT */ | |
460 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
461 | {2, 0xa3, 0xa, F_SA_LOW | F_D_IN, resp_report_tgtpgs, maint_in_iarr, | |
462 | {12, 0xea, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, 0, | |
463 | 0} }, | |
464 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* MAINT OUT */ | |
465 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
466 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* VERIFY */ | |
467 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
468 | {1, 0x7f, 0x9, F_SA_HIGH | F_D_IN | FF_DIRECT_IO, resp_read_dt0, | |
469 | vl_iarr, {32, 0xc7, 0, 0, 0, 0, 0x1f, 0x18, 0x0, 0x9, 0xfe, 0, | |
470 | 0xff, 0xff, 0xff, 0xff} },/* VARIABLE LENGTH, READ(32) */ | |
471 | {1, 0x56, 0, F_D_OUT, NULL, reserve_iarr, /* RESERVE(10) */ | |
472 | {10, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, | |
473 | 0} }, | |
474 | {1, 0x57, 0, F_D_OUT, NULL, release_iarr, /* RELEASE(10) */ | |
475 | {10, 0x13, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, | |
476 | 0} }, | |
477 | /* 20 */ | |
478 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* ALLOW REMOVAL */ | |
479 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
480 | {0, 0x1, 0, 0, resp_start_stop, NULL, /* REWIND ?? */ | |
481 | {6, 0x1, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
482 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* ATA_PT */ | |
483 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
484 | {0, 0x1d, F_D_OUT, 0, NULL, NULL, /* SEND DIAGNOSTIC */ | |
485 | {6, 0xf7, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
486 | {0, 0x42, 0, F_D_OUT | FF_DIRECT_IO, resp_unmap, NULL, /* UNMAP */ | |
487 | {10, 0x1, 0, 0, 0, 0, 0x1f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, | |
488 | {0, 0x53, 0, F_D_IN | F_D_OUT | FF_DIRECT_IO, resp_xdwriteread_10, | |
489 | NULL, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, | |
490 | 0, 0, 0, 0, 0, 0} }, | |
acafd0b9 EM |
491 | {0, 0x3b, 0, F_D_OUT_MAYBE, resp_write_buffer, NULL, |
492 | {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, | |
493 | 0, 0, 0, 0} }, /* WRITE_BUFFER */ | |
c2248fc9 DG |
494 | {1, 0x41, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, resp_write_same_10, |
495 | write_same_iarr, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, | |
496 | 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, | |
497 | {0, 0x35, 0, F_DELAY_OVERR | FF_DIRECT_IO, NULL, NULL, /* SYNC_CACHE */ | |
498 | {10, 0x7, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, | |
499 | 0, 0, 0, 0} }, | |
38d5c833 | 500 | {0, 0x89, 0, F_D_OUT | FF_DIRECT_IO, resp_comp_write, NULL, |
c2248fc9 DG |
501 | {16, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, |
502 | 0, 0xff, 0x1f, 0xc7} }, /* COMPARE AND WRITE */ | |
503 | ||
504 | /* 30 */ | |
505 | {0xff, 0, 0, 0, NULL, NULL, /* terminating element */ | |
506 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, | |
507 | }; | |
508 | ||
817fd66b DG |
509 | struct sdebug_scmd_extra_t { |
510 | bool inj_recovered; | |
511 | bool inj_transport; | |
512 | bool inj_dif; | |
513 | bool inj_dix; | |
514 | bool inj_short; | |
515 | }; | |
516 | ||
1da177e4 | 517 | static int scsi_debug_add_host = DEF_NUM_HOST; |
5b94e232 | 518 | static int scsi_debug_ato = DEF_ATO; |
1da177e4 LT |
519 | static int scsi_debug_delay = DEF_DELAY; |
520 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; | |
5b94e232 MP |
521 | static int scsi_debug_dif = DEF_DIF; |
522 | static int scsi_debug_dix = DEF_DIX; | |
523 | static int scsi_debug_dsense = DEF_D_SENSE; | |
1da177e4 | 524 | static int scsi_debug_every_nth = DEF_EVERY_NTH; |
5b94e232 | 525 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
68aee7ba | 526 | static unsigned int scsi_debug_guard = DEF_GUARD; |
5b94e232 | 527 | static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED; |
1da177e4 | 528 | static int scsi_debug_max_luns = DEF_MAX_LUNS; |
78d4e5a0 | 529 | static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE; |
cbf67842 DG |
530 | static atomic_t retired_max_queue; /* if > 0 then was prior max_queue */ |
531 | static int scsi_debug_ndelay = DEF_NDELAY; | |
5b94e232 | 532 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
78d4e5a0 | 533 | static int scsi_debug_no_uld = 0; |
5b94e232 | 534 | static int scsi_debug_num_parts = DEF_NUM_PARTS; |
1da177e4 | 535 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ |
5b94e232 | 536 | static int scsi_debug_opt_blks = DEF_OPT_BLKS; |
1da177e4 | 537 | static int scsi_debug_opts = DEF_OPTS; |
5b94e232 | 538 | static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP; |
1da177e4 | 539 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ |
5b94e232 MP |
540 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; |
541 | static int scsi_debug_sector_size = DEF_SECTOR_SIZE; | |
c65b1445 | 542 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; |
23183910 | 543 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; |
5b94e232 MP |
544 | static unsigned int scsi_debug_lbpu = DEF_LBPU; |
545 | static unsigned int scsi_debug_lbpws = DEF_LBPWS; | |
546 | static unsigned int scsi_debug_lbpws10 = DEF_LBPWS10; | |
be1dd78d | 547 | static unsigned int scsi_debug_lbprz = DEF_LBPRZ; |
6014759c | 548 | static unsigned int scsi_debug_unmap_alignment = DEF_UNMAP_ALIGNMENT; |
5b94e232 MP |
549 | static unsigned int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY; |
550 | static unsigned int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS; | |
551 | static unsigned int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC; | |
552 | static unsigned int scsi_debug_write_same_length = DEF_WRITESAME_LENGTH; | |
d986788b | 553 | static bool scsi_debug_removable = DEF_REMOVABLE; |
0759c666 | 554 | static bool scsi_debug_clustering; |
cbf67842 | 555 | static bool scsi_debug_host_lock = DEF_HOST_LOCK; |
c2248fc9 | 556 | static bool scsi_debug_strict = DEF_STRICT; |
817fd66b | 557 | static bool sdebug_any_injecting_opt; |
1da177e4 | 558 | |
cbf67842 DG |
559 | static atomic_t sdebug_cmnd_count; |
560 | static atomic_t sdebug_completions; | |
561 | static atomic_t sdebug_a_tsf; /* counter of 'almost' TSFs */ | |
1da177e4 LT |
562 | |
563 | #define DEV_READONLY(TGT) (0) | |
1da177e4 | 564 | |
c65b1445 | 565 | static unsigned int sdebug_store_sectors; |
1da177e4 LT |
566 | static sector_t sdebug_capacity; /* in sectors */ |
567 | ||
568 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages | |
569 | may still need them */ | |
570 | static int sdebug_heads; /* heads per disk */ | |
571 | static int sdebug_cylinders_per; /* cylinders per surface */ | |
572 | static int sdebug_sectors_per; /* sectors per cylinder */ | |
573 | ||
1da177e4 LT |
574 | #define SDEBUG_MAX_PARTS 4 |
575 | ||
395cef03 | 576 | #define SCSI_DEBUG_MAX_CMD_LEN 32 |
9e603ca0 | 577 | |
5b94e232 MP |
578 | static unsigned int scsi_debug_lbp(void) |
579 | { | |
cbf67842 DG |
580 | return ((0 == scsi_debug_fake_rw) && |
581 | (scsi_debug_lbpu | scsi_debug_lbpws | scsi_debug_lbpws10)); | |
5b94e232 MP |
582 | } |
583 | ||
1da177e4 LT |
584 | struct sdebug_dev_info { |
585 | struct list_head dev_list; | |
1da177e4 LT |
586 | unsigned int channel; |
587 | unsigned int target; | |
9cb78c16 | 588 | u64 lun; |
1da177e4 | 589 | struct sdebug_host_info *sdbg_host; |
cbf67842 DG |
590 | unsigned long uas_bm[1]; |
591 | atomic_t num_in_q; | |
c2248fc9 DG |
592 | char stopped; /* TODO: should be atomic */ |
593 | bool used; | |
1da177e4 LT |
594 | }; |
595 | ||
596 | struct sdebug_host_info { | |
597 | struct list_head host_list; | |
598 | struct Scsi_Host *shost; | |
599 | struct device dev; | |
600 | struct list_head dev_info_list; | |
601 | }; | |
602 | ||
603 | #define to_sdebug_host(d) \ | |
604 | container_of(d, struct sdebug_host_info, dev) | |
605 | ||
606 | static LIST_HEAD(sdebug_host_list); | |
607 | static DEFINE_SPINLOCK(sdebug_host_list_lock); | |
608 | ||
cbf67842 DG |
609 | |
610 | struct sdebug_hrtimer { /* ... is derived from hrtimer */ | |
611 | struct hrtimer hrt; /* must be first element */ | |
612 | int qa_indx; | |
613 | }; | |
1da177e4 LT |
614 | |
615 | struct sdebug_queued_cmd { | |
cbf67842 DG |
616 | /* in_use flagged by a bit in queued_in_use_bm[] */ |
617 | struct timer_list *cmnd_timerp; | |
618 | struct tasklet_struct *tletp; | |
619 | struct sdebug_hrtimer *sd_hrtp; | |
1da177e4 | 620 | struct scsi_cmnd * a_cmnd; |
1da177e4 LT |
621 | }; |
622 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; | |
cbf67842 DG |
623 | static unsigned long queued_in_use_bm[SCSI_DEBUG_CANQUEUE_WORDS]; |
624 | ||
1da177e4 | 625 | |
1da177e4 | 626 | static unsigned char * fake_storep; /* ramdisk storage */ |
e18d8bea | 627 | static struct sd_dif_tuple *dif_storep; /* protection info */ |
44d92694 | 628 | static void *map_storep; /* provisioning map */ |
1da177e4 | 629 | |
44d92694 | 630 | static unsigned long map_size; |
cbf67842 DG |
631 | static int num_aborts; |
632 | static int num_dev_resets; | |
633 | static int num_target_resets; | |
634 | static int num_bus_resets; | |
635 | static int num_host_resets; | |
c6a44287 MP |
636 | static int dix_writes; |
637 | static int dix_reads; | |
638 | static int dif_errors; | |
1da177e4 LT |
639 | |
640 | static DEFINE_SPINLOCK(queued_arr_lock); | |
641 | static DEFINE_RWLOCK(atomic_rw); | |
642 | ||
cbf67842 DG |
643 | static char sdebug_proc_name[] = MY_NAME; |
644 | static const char *my_name = MY_NAME; | |
1da177e4 | 645 | |
1da177e4 LT |
646 | static struct bus_type pseudo_lld_bus; |
647 | ||
648 | static struct device_driver sdebug_driverfs_driver = { | |
649 | .name = sdebug_proc_name, | |
650 | .bus = &pseudo_lld_bus, | |
1da177e4 LT |
651 | }; |
652 | ||
653 | static const int check_condition_result = | |
654 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | |
655 | ||
c6a44287 MP |
656 | static const int illegal_condition_result = |
657 | (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; | |
658 | ||
cbf67842 DG |
659 | static const int device_qfull_result = |
660 | (DID_OK << 16) | (COMMAND_COMPLETE << 8) | SAM_STAT_TASK_SET_FULL; | |
661 | ||
662 | static unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
663 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, | |
664 | 0, 0, 0, 0}; | |
c65b1445 DG |
665 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
666 | 0, 0, 0x2, 0x4b}; | |
667 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
668 | 0, 0, 0x0, 0x0}; | |
669 | ||
14faa944 AM |
670 | static void *fake_store(unsigned long long lba) |
671 | { | |
672 | lba = do_div(lba, sdebug_store_sectors); | |
673 | ||
674 | return fake_storep + lba * scsi_debug_sector_size; | |
675 | } | |
676 | ||
677 | static struct sd_dif_tuple *dif_store(sector_t sector) | |
678 | { | |
679 | sector = do_div(sector, sdebug_store_sectors); | |
680 | ||
681 | return dif_storep + sector; | |
682 | } | |
683 | ||
1da177e4 LT |
684 | static int sdebug_add_adapter(void); |
685 | static void sdebug_remove_adapter(void); | |
1da177e4 | 686 | |
8dea0d02 FT |
687 | static void sdebug_max_tgts_luns(void) |
688 | { | |
689 | struct sdebug_host_info *sdbg_host; | |
690 | struct Scsi_Host *hpnt; | |
691 | ||
692 | spin_lock(&sdebug_host_list_lock); | |
693 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
694 | hpnt = sdbg_host->shost; | |
695 | if ((hpnt->this_id >= 0) && | |
696 | (scsi_debug_num_tgts > hpnt->this_id)) | |
697 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
698 | else | |
699 | hpnt->max_id = scsi_debug_num_tgts; | |
700 | /* scsi_debug_max_luns; */ | |
701 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; | |
702 | } | |
703 | spin_unlock(&sdebug_host_list_lock); | |
704 | } | |
705 | ||
22017ed2 DG |
706 | enum sdeb_cmd_data {SDEB_IN_DATA = 0, SDEB_IN_CDB = 1}; |
707 | ||
708 | /* Set in_bit to -1 to indicate no bit position of invalid field */ | |
709 | static void | |
710 | mk_sense_invalid_fld(struct scsi_cmnd *scp, enum sdeb_cmd_data c_d, | |
711 | int in_byte, int in_bit) | |
712 | { | |
713 | unsigned char *sbuff; | |
714 | u8 sks[4]; | |
715 | int sl, asc; | |
716 | ||
717 | sbuff = scp->sense_buffer; | |
718 | if (!sbuff) { | |
719 | sdev_printk(KERN_ERR, scp->device, | |
720 | "%s: sense_buffer is NULL\n", __func__); | |
721 | return; | |
722 | } | |
723 | asc = c_d ? INVALID_FIELD_IN_CDB : INVALID_FIELD_IN_PARAM_LIST; | |
724 | memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); | |
725 | scsi_build_sense_buffer(scsi_debug_dsense, sbuff, ILLEGAL_REQUEST, | |
726 | asc, 0); | |
727 | memset(sks, 0, sizeof(sks)); | |
728 | sks[0] = 0x80; | |
729 | if (c_d) | |
730 | sks[0] |= 0x40; | |
731 | if (in_bit >= 0) { | |
732 | sks[0] |= 0x8; | |
733 | sks[0] |= 0x7 & in_bit; | |
734 | } | |
735 | put_unaligned_be16(in_byte, sks + 1); | |
736 | if (scsi_debug_dsense) { | |
737 | sl = sbuff[7] + 8; | |
738 | sbuff[7] = sl; | |
739 | sbuff[sl] = 0x2; | |
740 | sbuff[sl + 1] = 0x6; | |
741 | memcpy(sbuff + sl + 4, sks, 3); | |
742 | } else | |
743 | memcpy(sbuff + 15, sks, 3); | |
744 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
745 | sdev_printk(KERN_INFO, scp->device, "%s: [sense_key,asc,ascq" | |
746 | "]: [0x5,0x%x,0x0] %c byte=%d, bit=%d\n", | |
747 | my_name, asc, c_d ? 'C' : 'D', in_byte, in_bit); | |
748 | } | |
749 | ||
cbf67842 | 750 | static void mk_sense_buffer(struct scsi_cmnd *scp, int key, int asc, int asq) |
8dea0d02 FT |
751 | { |
752 | unsigned char *sbuff; | |
753 | ||
cbf67842 DG |
754 | sbuff = scp->sense_buffer; |
755 | if (!sbuff) { | |
756 | sdev_printk(KERN_ERR, scp->device, | |
757 | "%s: sense_buffer is NULL\n", __func__); | |
758 | return; | |
759 | } | |
760 | memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); | |
8dea0d02 FT |
761 | |
762 | scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); | |
763 | ||
764 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
cbf67842 DG |
765 | sdev_printk(KERN_INFO, scp->device, |
766 | "%s: [sense_key,asc,ascq]: [0x%x,0x%x,0x%x]\n", | |
767 | my_name, key, asc, asq); | |
8dea0d02 | 768 | } |
1da177e4 | 769 | |
22017ed2 DG |
770 | static void |
771 | mk_sense_invalid_opcode(struct scsi_cmnd *scp) | |
772 | { | |
773 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_OPCODE, 0); | |
774 | } | |
775 | ||
1da177e4 LT |
776 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
777 | { | |
778 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
cbf67842 DG |
779 | if (0x1261 == cmd) |
780 | sdev_printk(KERN_INFO, dev, | |
781 | "%s: BLKFLSBUF [0x1261]\n", __func__); | |
782 | else if (0x5331 == cmd) | |
783 | sdev_printk(KERN_INFO, dev, | |
784 | "%s: CDROM_GET_CAPABILITY [0x5331]\n", | |
785 | __func__); | |
786 | else | |
787 | sdev_printk(KERN_INFO, dev, "%s: cmd=0x%x\n", | |
788 | __func__, cmd); | |
1da177e4 LT |
789 | } |
790 | return -EINVAL; | |
791 | /* return -ENOTTY; // correct return but upsets fdisk */ | |
792 | } | |
793 | ||
19c8ead7 EM |
794 | static void clear_luns_changed_on_target(struct sdebug_dev_info *devip) |
795 | { | |
796 | struct sdebug_host_info *sdhp; | |
797 | struct sdebug_dev_info *dp; | |
798 | ||
799 | spin_lock(&sdebug_host_list_lock); | |
800 | list_for_each_entry(sdhp, &sdebug_host_list, host_list) { | |
801 | list_for_each_entry(dp, &sdhp->dev_info_list, dev_list) { | |
802 | if ((devip->sdbg_host == dp->sdbg_host) && | |
803 | (devip->target == dp->target)) | |
804 | clear_bit(SDEBUG_UA_LUNS_CHANGED, dp->uas_bm); | |
805 | } | |
806 | } | |
807 | spin_unlock(&sdebug_host_list_lock); | |
808 | } | |
809 | ||
cbf67842 | 810 | static int check_readiness(struct scsi_cmnd *SCpnt, int uas_only, |
c65b1445 | 811 | struct sdebug_dev_info * devip) |
1da177e4 | 812 | { |
cbf67842 DG |
813 | int k; |
814 | bool debug = !!(SCSI_DEBUG_OPT_NOISE & scsi_debug_opts); | |
815 | ||
816 | k = find_first_bit(devip->uas_bm, SDEBUG_NUM_UAS); | |
817 | if (k != SDEBUG_NUM_UAS) { | |
818 | const char *cp = NULL; | |
819 | ||
820 | switch (k) { | |
821 | case SDEBUG_UA_POR: | |
822 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
823 | UA_RESET_ASC, POWER_ON_RESET_ASCQ); | |
824 | if (debug) | |
825 | cp = "power on reset"; | |
826 | break; | |
827 | case SDEBUG_UA_BUS_RESET: | |
828 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
829 | UA_RESET_ASC, BUS_RESET_ASCQ); | |
830 | if (debug) | |
831 | cp = "bus reset"; | |
832 | break; | |
833 | case SDEBUG_UA_MODE_CHANGED: | |
834 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
835 | UA_CHANGED_ASC, MODE_CHANGED_ASCQ); | |
836 | if (debug) | |
837 | cp = "mode parameters changed"; | |
838 | break; | |
0d01c5df DG |
839 | case SDEBUG_UA_CAPACITY_CHANGED: |
840 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
841 | UA_CHANGED_ASC, CAPACITY_CHANGED_ASCQ); | |
842 | if (debug) | |
843 | cp = "capacity data changed"; | |
f49accf1 | 844 | break; |
acafd0b9 EM |
845 | case SDEBUG_UA_MICROCODE_CHANGED: |
846 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
847 | TARGET_CHANGED_ASC, MICROCODE_CHANGED_ASCQ); | |
848 | if (debug) | |
849 | cp = "microcode has been changed"; | |
850 | break; | |
851 | case SDEBUG_UA_MICROCODE_CHANGED_WO_RESET: | |
852 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
853 | TARGET_CHANGED_ASC, | |
854 | MICROCODE_CHANGED_WO_RESET_ASCQ); | |
855 | if (debug) | |
856 | cp = "microcode has been changed without reset"; | |
857 | break; | |
19c8ead7 EM |
858 | case SDEBUG_UA_LUNS_CHANGED: |
859 | /* | |
860 | * SPC-3 behavior is to report a UNIT ATTENTION with | |
861 | * ASC/ASCQ REPORTED LUNS DATA HAS CHANGED on every LUN | |
862 | * on the target, until a REPORT LUNS command is | |
863 | * received. SPC-4 behavior is to report it only once. | |
864 | * NOTE: scsi_debug_scsi_level does not use the same | |
865 | * values as struct scsi_device->scsi_level. | |
866 | */ | |
867 | if (scsi_debug_scsi_level >= 6) /* SPC-4 and above */ | |
868 | clear_luns_changed_on_target(devip); | |
869 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
870 | TARGET_CHANGED_ASC, | |
871 | LUNS_CHANGED_ASCQ); | |
872 | if (debug) | |
873 | cp = "reported luns data has changed"; | |
874 | break; | |
cbf67842 DG |
875 | default: |
876 | pr_warn("%s: unexpected unit attention code=%d\n", | |
877 | __func__, k); | |
878 | if (debug) | |
879 | cp = "unknown"; | |
880 | break; | |
881 | } | |
882 | clear_bit(k, devip->uas_bm); | |
883 | if (debug) | |
884 | sdev_printk(KERN_INFO, SCpnt->device, | |
885 | "%s reports: Unit attention: %s\n", | |
886 | my_name, cp); | |
1da177e4 LT |
887 | return check_condition_result; |
888 | } | |
cbf67842 DG |
889 | if ((UAS_TUR == uas_only) && devip->stopped) { |
890 | mk_sense_buffer(SCpnt, NOT_READY, LOGICAL_UNIT_NOT_READY, | |
c65b1445 | 891 | 0x2); |
cbf67842 DG |
892 | if (debug) |
893 | sdev_printk(KERN_INFO, SCpnt->device, | |
894 | "%s reports: Not ready: %s\n", my_name, | |
895 | "initializing command required"); | |
c65b1445 DG |
896 | return check_condition_result; |
897 | } | |
1da177e4 LT |
898 | return 0; |
899 | } | |
900 | ||
901 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ | |
21a61829 | 902 | static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
1da177e4 LT |
903 | int arr_len) |
904 | { | |
21a61829 | 905 | int act_len; |
072d0bb3 | 906 | struct scsi_data_buffer *sdb = scsi_in(scp); |
1da177e4 | 907 | |
072d0bb3 | 908 | if (!sdb->length) |
1da177e4 | 909 | return 0; |
072d0bb3 | 910 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
1da177e4 | 911 | return (DID_ERROR << 16); |
21a61829 FT |
912 | |
913 | act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, | |
914 | arr, arr_len); | |
a4517511 | 915 | sdb->resid = scsi_bufflen(scp) - act_len; |
21a61829 | 916 | |
1da177e4 LT |
917 | return 0; |
918 | } | |
919 | ||
920 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ | |
21a61829 FT |
921 | static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
922 | int arr_len) | |
1da177e4 | 923 | { |
21a61829 | 924 | if (!scsi_bufflen(scp)) |
1da177e4 | 925 | return 0; |
072d0bb3 | 926 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
1da177e4 | 927 | return -1; |
21a61829 FT |
928 | |
929 | return scsi_sg_copy_to_buffer(scp, arr, arr_len); | |
1da177e4 LT |
930 | } |
931 | ||
932 | ||
933 | static const char * inq_vendor_id = "Linux "; | |
934 | static const char * inq_product_id = "scsi_debug "; | |
cbf67842 | 935 | static const char *inq_product_rev = "0184"; /* version less '.' */ |
1da177e4 | 936 | |
cbf67842 | 937 | /* Device identification VPD page. Returns number of bytes placed in arr */ |
5a09e398 HR |
938 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
939 | int target_dev_id, int dev_id_num, | |
940 | const char * dev_id_str, | |
c65b1445 | 941 | int dev_id_str_len) |
1da177e4 | 942 | { |
c65b1445 DG |
943 | int num, port_a; |
944 | char b[32]; | |
1da177e4 | 945 | |
c65b1445 | 946 | port_a = target_dev_id + 1; |
1da177e4 LT |
947 | /* T10 vendor identifier field format (faked) */ |
948 | arr[0] = 0x2; /* ASCII */ | |
949 | arr[1] = 0x1; | |
950 | arr[2] = 0x0; | |
951 | memcpy(&arr[4], inq_vendor_id, 8); | |
952 | memcpy(&arr[12], inq_product_id, 16); | |
953 | memcpy(&arr[28], dev_id_str, dev_id_str_len); | |
954 | num = 8 + 16 + dev_id_str_len; | |
955 | arr[3] = num; | |
956 | num += 4; | |
c65b1445 DG |
957 | if (dev_id_num >= 0) { |
958 | /* NAA-5, Logical unit identifier (binary) */ | |
959 | arr[num++] = 0x1; /* binary (not necessarily sas) */ | |
960 | arr[num++] = 0x3; /* PIV=0, lu, naa */ | |
961 | arr[num++] = 0x0; | |
962 | arr[num++] = 0x8; | |
963 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ | |
964 | arr[num++] = 0x33; | |
965 | arr[num++] = 0x33; | |
966 | arr[num++] = 0x30; | |
967 | arr[num++] = (dev_id_num >> 24); | |
968 | arr[num++] = (dev_id_num >> 16) & 0xff; | |
969 | arr[num++] = (dev_id_num >> 8) & 0xff; | |
970 | arr[num++] = dev_id_num & 0xff; | |
971 | /* Target relative port number */ | |
972 | arr[num++] = 0x61; /* proto=sas, binary */ | |
973 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ | |
974 | arr[num++] = 0x0; /* reserved */ | |
975 | arr[num++] = 0x4; /* length */ | |
976 | arr[num++] = 0x0; /* reserved */ | |
977 | arr[num++] = 0x0; /* reserved */ | |
978 | arr[num++] = 0x0; | |
979 | arr[num++] = 0x1; /* relative port A */ | |
980 | } | |
981 | /* NAA-5, Target port identifier */ | |
982 | arr[num++] = 0x61; /* proto=sas, binary */ | |
983 | arr[num++] = 0x93; /* piv=1, target port, naa */ | |
984 | arr[num++] = 0x0; | |
985 | arr[num++] = 0x8; | |
986 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
987 | arr[num++] = 0x22; | |
988 | arr[num++] = 0x22; | |
989 | arr[num++] = 0x20; | |
990 | arr[num++] = (port_a >> 24); | |
991 | arr[num++] = (port_a >> 16) & 0xff; | |
992 | arr[num++] = (port_a >> 8) & 0xff; | |
993 | arr[num++] = port_a & 0xff; | |
5a09e398 HR |
994 | /* NAA-5, Target port group identifier */ |
995 | arr[num++] = 0x61; /* proto=sas, binary */ | |
996 | arr[num++] = 0x95; /* piv=1, target port group id */ | |
997 | arr[num++] = 0x0; | |
998 | arr[num++] = 0x4; | |
999 | arr[num++] = 0; | |
1000 | arr[num++] = 0; | |
1001 | arr[num++] = (port_group_id >> 8) & 0xff; | |
1002 | arr[num++] = port_group_id & 0xff; | |
c65b1445 DG |
1003 | /* NAA-5, Target device identifier */ |
1004 | arr[num++] = 0x61; /* proto=sas, binary */ | |
1005 | arr[num++] = 0xa3; /* piv=1, target device, naa */ | |
1006 | arr[num++] = 0x0; | |
1007 | arr[num++] = 0x8; | |
1008 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
1009 | arr[num++] = 0x22; | |
1010 | arr[num++] = 0x22; | |
1011 | arr[num++] = 0x20; | |
1012 | arr[num++] = (target_dev_id >> 24); | |
1013 | arr[num++] = (target_dev_id >> 16) & 0xff; | |
1014 | arr[num++] = (target_dev_id >> 8) & 0xff; | |
1015 | arr[num++] = target_dev_id & 0xff; | |
1016 | /* SCSI name string: Target device identifier */ | |
1017 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ | |
1018 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ | |
1019 | arr[num++] = 0x0; | |
1020 | arr[num++] = 24; | |
1021 | memcpy(arr + num, "naa.52222220", 12); | |
1022 | num += 12; | |
1023 | snprintf(b, sizeof(b), "%08X", target_dev_id); | |
1024 | memcpy(arr + num, b, 8); | |
1025 | num += 8; | |
1026 | memset(arr + num, 0, 4); | |
1027 | num += 4; | |
1028 | return num; | |
1029 | } | |
1030 | ||
1031 | ||
1032 | static unsigned char vpd84_data[] = { | |
1033 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, | |
1034 | 0x22,0x22,0x22,0x0,0xbb,0x1, | |
1035 | 0x22,0x22,0x22,0x0,0xbb,0x2, | |
1036 | }; | |
1037 | ||
cbf67842 | 1038 | /* Software interface identification VPD page */ |
c65b1445 DG |
1039 | static int inquiry_evpd_84(unsigned char * arr) |
1040 | { | |
1041 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); | |
1042 | return sizeof(vpd84_data); | |
1043 | } | |
1044 | ||
cbf67842 | 1045 | /* Management network addresses VPD page */ |
c65b1445 DG |
1046 | static int inquiry_evpd_85(unsigned char * arr) |
1047 | { | |
1048 | int num = 0; | |
1049 | const char * na1 = "https://www.kernel.org/config"; | |
1050 | const char * na2 = "http://www.kernel.org/log"; | |
1051 | int plen, olen; | |
1052 | ||
1053 | arr[num++] = 0x1; /* lu, storage config */ | |
1054 | arr[num++] = 0x0; /* reserved */ | |
1055 | arr[num++] = 0x0; | |
1056 | olen = strlen(na1); | |
1057 | plen = olen + 1; | |
1058 | if (plen % 4) | |
1059 | plen = ((plen / 4) + 1) * 4; | |
1060 | arr[num++] = plen; /* length, null termianted, padded */ | |
1061 | memcpy(arr + num, na1, olen); | |
1062 | memset(arr + num + olen, 0, plen - olen); | |
1063 | num += plen; | |
1064 | ||
1065 | arr[num++] = 0x4; /* lu, logging */ | |
1066 | arr[num++] = 0x0; /* reserved */ | |
1067 | arr[num++] = 0x0; | |
1068 | olen = strlen(na2); | |
1069 | plen = olen + 1; | |
1070 | if (plen % 4) | |
1071 | plen = ((plen / 4) + 1) * 4; | |
1072 | arr[num++] = plen; /* length, null terminated, padded */ | |
1073 | memcpy(arr + num, na2, olen); | |
1074 | memset(arr + num + olen, 0, plen - olen); | |
1075 | num += plen; | |
1076 | ||
1077 | return num; | |
1078 | } | |
1079 | ||
1080 | /* SCSI ports VPD page */ | |
1081 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) | |
1082 | { | |
1083 | int num = 0; | |
1084 | int port_a, port_b; | |
1085 | ||
1086 | port_a = target_dev_id + 1; | |
1087 | port_b = port_a + 1; | |
1088 | arr[num++] = 0x0; /* reserved */ | |
1089 | arr[num++] = 0x0; /* reserved */ | |
1090 | arr[num++] = 0x0; | |
1091 | arr[num++] = 0x1; /* relative port 1 (primary) */ | |
1092 | memset(arr + num, 0, 6); | |
1093 | num += 6; | |
1094 | arr[num++] = 0x0; | |
1095 | arr[num++] = 12; /* length tp descriptor */ | |
1096 | /* naa-5 target port identifier (A) */ | |
1097 | arr[num++] = 0x61; /* proto=sas, binary */ | |
1098 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
1099 | arr[num++] = 0x0; /* reserved */ | |
1100 | arr[num++] = 0x8; /* length */ | |
1101 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
1102 | arr[num++] = 0x22; | |
1103 | arr[num++] = 0x22; | |
1104 | arr[num++] = 0x20; | |
1105 | arr[num++] = (port_a >> 24); | |
1106 | arr[num++] = (port_a >> 16) & 0xff; | |
1107 | arr[num++] = (port_a >> 8) & 0xff; | |
1108 | arr[num++] = port_a & 0xff; | |
1109 | ||
1110 | arr[num++] = 0x0; /* reserved */ | |
1111 | arr[num++] = 0x0; /* reserved */ | |
1112 | arr[num++] = 0x0; | |
1113 | arr[num++] = 0x2; /* relative port 2 (secondary) */ | |
1114 | memset(arr + num, 0, 6); | |
1115 | num += 6; | |
1116 | arr[num++] = 0x0; | |
1117 | arr[num++] = 12; /* length tp descriptor */ | |
1118 | /* naa-5 target port identifier (B) */ | |
1119 | arr[num++] = 0x61; /* proto=sas, binary */ | |
1120 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
1121 | arr[num++] = 0x0; /* reserved */ | |
1122 | arr[num++] = 0x8; /* length */ | |
1123 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
1124 | arr[num++] = 0x22; | |
1125 | arr[num++] = 0x22; | |
1126 | arr[num++] = 0x20; | |
1127 | arr[num++] = (port_b >> 24); | |
1128 | arr[num++] = (port_b >> 16) & 0xff; | |
1129 | arr[num++] = (port_b >> 8) & 0xff; | |
1130 | arr[num++] = port_b & 0xff; | |
1131 | ||
1132 | return num; | |
1133 | } | |
1134 | ||
1135 | ||
1136 | static unsigned char vpd89_data[] = { | |
1137 | /* from 4th byte */ 0,0,0,0, | |
1138 | 'l','i','n','u','x',' ',' ',' ', | |
1139 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', | |
1140 | '1','2','3','4', | |
1141 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, | |
1142 | 0xec,0,0,0, | |
1143 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, | |
1144 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, | |
1145 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, | |
1146 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, | |
1147 | 0x53,0x41, | |
1148 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
1149 | 0x20,0x20, | |
1150 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
1151 | 0x10,0x80, | |
1152 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, | |
1153 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, | |
1154 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, | |
1155 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, | |
1156 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, | |
1157 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, | |
1158 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, | |
1159 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1160 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1161 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1162 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, | |
1163 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, | |
1164 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, | |
1165 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, | |
1166 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1167 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1168 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1169 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1170 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1171 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1172 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1173 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1174 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1175 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1176 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1177 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, | |
1178 | }; | |
1179 | ||
cbf67842 | 1180 | /* ATA Information VPD page */ |
c65b1445 DG |
1181 | static int inquiry_evpd_89(unsigned char * arr) |
1182 | { | |
1183 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); | |
1184 | return sizeof(vpd89_data); | |
1185 | } | |
1186 | ||
1187 | ||
1188 | static unsigned char vpdb0_data[] = { | |
1e49f785 DG |
1189 | /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64, |
1190 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1191 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
1192 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
c65b1445 DG |
1193 | }; |
1194 | ||
cbf67842 | 1195 | /* Block limits VPD page (SBC-3) */ |
c65b1445 DG |
1196 | static int inquiry_evpd_b0(unsigned char * arr) |
1197 | { | |
ea61fca5 MP |
1198 | unsigned int gran; |
1199 | ||
c65b1445 | 1200 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
e308b3d1 MP |
1201 | |
1202 | /* Optimal transfer length granularity */ | |
ea61fca5 MP |
1203 | gran = 1 << scsi_debug_physblk_exp; |
1204 | arr[2] = (gran >> 8) & 0xff; | |
1205 | arr[3] = gran & 0xff; | |
e308b3d1 MP |
1206 | |
1207 | /* Maximum Transfer Length */ | |
c65b1445 DG |
1208 | if (sdebug_store_sectors > 0x400) { |
1209 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; | |
1210 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; | |
1211 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; | |
1212 | arr[7] = sdebug_store_sectors & 0xff; | |
1213 | } | |
44d92694 | 1214 | |
e308b3d1 MP |
1215 | /* Optimal Transfer Length */ |
1216 | put_unaligned_be32(scsi_debug_opt_blks, &arr[8]); | |
1217 | ||
5b94e232 | 1218 | if (scsi_debug_lbpu) { |
e308b3d1 | 1219 | /* Maximum Unmap LBA Count */ |
6014759c | 1220 | put_unaligned_be32(scsi_debug_unmap_max_blocks, &arr[16]); |
e308b3d1 MP |
1221 | |
1222 | /* Maximum Unmap Block Descriptor Count */ | |
44d92694 MP |
1223 | put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]); |
1224 | } | |
1225 | ||
e308b3d1 | 1226 | /* Unmap Granularity Alignment */ |
44d92694 MP |
1227 | if (scsi_debug_unmap_alignment) { |
1228 | put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]); | |
1229 | arr[28] |= 0x80; /* UGAVALID */ | |
1230 | } | |
1231 | ||
e308b3d1 | 1232 | /* Optimal Unmap Granularity */ |
6014759c MP |
1233 | put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]); |
1234 | ||
5b94e232 MP |
1235 | /* Maximum WRITE SAME Length */ |
1236 | put_unaligned_be64(scsi_debug_write_same_length, &arr[32]); | |
1237 | ||
1238 | return 0x3c; /* Mandatory page length for Logical Block Provisioning */ | |
44d92694 | 1239 | |
c65b1445 | 1240 | return sizeof(vpdb0_data); |
1da177e4 LT |
1241 | } |
1242 | ||
1e49f785 | 1243 | /* Block device characteristics VPD page (SBC-3) */ |
eac6e8e4 MW |
1244 | static int inquiry_evpd_b1(unsigned char *arr) |
1245 | { | |
1246 | memset(arr, 0, 0x3c); | |
1247 | arr[0] = 0; | |
1e49f785 DG |
1248 | arr[1] = 1; /* non rotating medium (e.g. solid state) */ |
1249 | arr[2] = 0; | |
1250 | arr[3] = 5; /* less than 1.8" */ | |
eac6e8e4 MW |
1251 | |
1252 | return 0x3c; | |
1253 | } | |
1da177e4 | 1254 | |
be1dd78d | 1255 | /* Logical block provisioning VPD page (SBC-3) */ |
6014759c MP |
1256 | static int inquiry_evpd_b2(unsigned char *arr) |
1257 | { | |
3f0bc3b3 | 1258 | memset(arr, 0, 0x4); |
6014759c MP |
1259 | arr[0] = 0; /* threshold exponent */ |
1260 | ||
5b94e232 | 1261 | if (scsi_debug_lbpu) |
6014759c MP |
1262 | arr[1] = 1 << 7; |
1263 | ||
5b94e232 | 1264 | if (scsi_debug_lbpws) |
6014759c MP |
1265 | arr[1] |= 1 << 6; |
1266 | ||
5b94e232 MP |
1267 | if (scsi_debug_lbpws10) |
1268 | arr[1] |= 1 << 5; | |
1269 | ||
be1dd78d ES |
1270 | if (scsi_debug_lbprz) |
1271 | arr[1] |= 1 << 2; | |
1272 | ||
3f0bc3b3 | 1273 | return 0x4; |
6014759c MP |
1274 | } |
1275 | ||
1da177e4 | 1276 | #define SDEBUG_LONG_INQ_SZ 96 |
c65b1445 | 1277 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
1da177e4 | 1278 | |
c2248fc9 | 1279 | static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
1da177e4 LT |
1280 | { |
1281 | unsigned char pq_pdt; | |
5a09e398 | 1282 | unsigned char * arr; |
01123ef4 | 1283 | unsigned char *cmd = scp->cmnd; |
5a09e398 | 1284 | int alloc_len, n, ret; |
c2248fc9 | 1285 | bool have_wlun; |
1da177e4 LT |
1286 | |
1287 | alloc_len = (cmd[3] << 8) + cmd[4]; | |
6f3cbf55 DG |
1288 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
1289 | if (! arr) | |
1290 | return DID_REQUEUE << 16; | |
c2248fc9 DG |
1291 | have_wlun = (scp->device->lun == SAM2_WLUN_REPORT_LUNS); |
1292 | if (have_wlun) | |
c65b1445 DG |
1293 | pq_pdt = 0x1e; /* present, wlun */ |
1294 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) | |
1295 | pq_pdt = 0x7f; /* not present, no device type */ | |
1296 | else | |
1297 | pq_pdt = (scsi_debug_ptype & 0x1f); | |
1da177e4 LT |
1298 | arr[0] = pq_pdt; |
1299 | if (0x2 & cmd[1]) { /* CMDDT bit set */ | |
22017ed2 | 1300 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 1); |
5a09e398 | 1301 | kfree(arr); |
1da177e4 LT |
1302 | return check_condition_result; |
1303 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ | |
5a09e398 | 1304 | int lu_id_num, port_group_id, target_dev_id, len; |
c65b1445 DG |
1305 | char lu_id_str[6]; |
1306 | int host_no = devip->sdbg_host->shost->host_no; | |
1da177e4 | 1307 | |
5a09e398 HR |
1308 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
1309 | (devip->channel & 0x7f); | |
23183910 DG |
1310 | if (0 == scsi_debug_vpd_use_hostno) |
1311 | host_no = 0; | |
c2248fc9 | 1312 | lu_id_num = have_wlun ? -1 : (((host_no + 1) * 2000) + |
c65b1445 DG |
1313 | (devip->target * 1000) + devip->lun); |
1314 | target_dev_id = ((host_no + 1) * 2000) + | |
1315 | (devip->target * 1000) - 3; | |
1316 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); | |
1da177e4 | 1317 | if (0 == cmd[2]) { /* supported vital product data pages */ |
c65b1445 DG |
1318 | arr[1] = cmd[2]; /*sanity */ |
1319 | n = 4; | |
1320 | arr[n++] = 0x0; /* this page */ | |
1321 | arr[n++] = 0x80; /* unit serial number */ | |
1322 | arr[n++] = 0x83; /* device identification */ | |
1323 | arr[n++] = 0x84; /* software interface ident. */ | |
1324 | arr[n++] = 0x85; /* management network addresses */ | |
1325 | arr[n++] = 0x86; /* extended inquiry */ | |
1326 | arr[n++] = 0x87; /* mode page policy */ | |
1327 | arr[n++] = 0x88; /* SCSI ports */ | |
1328 | arr[n++] = 0x89; /* ATA information */ | |
1329 | arr[n++] = 0xb0; /* Block limits (SBC) */ | |
eac6e8e4 | 1330 | arr[n++] = 0xb1; /* Block characteristics (SBC) */ |
5b94e232 MP |
1331 | if (scsi_debug_lbp()) /* Logical Block Prov. (SBC) */ |
1332 | arr[n++] = 0xb2; | |
c65b1445 | 1333 | arr[3] = n - 4; /* number of supported VPD pages */ |
1da177e4 | 1334 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
c65b1445 | 1335 | arr[1] = cmd[2]; /*sanity */ |
1da177e4 | 1336 | arr[3] = len; |
c65b1445 | 1337 | memcpy(&arr[4], lu_id_str, len); |
1da177e4 | 1338 | } else if (0x83 == cmd[2]) { /* device identification */ |
c65b1445 | 1339 | arr[1] = cmd[2]; /*sanity */ |
5a09e398 HR |
1340 | arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
1341 | target_dev_id, lu_id_num, | |
1342 | lu_id_str, len); | |
c65b1445 DG |
1343 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
1344 | arr[1] = cmd[2]; /*sanity */ | |
1345 | arr[3] = inquiry_evpd_84(&arr[4]); | |
1346 | } else if (0x85 == cmd[2]) { /* Management network addresses */ | |
1347 | arr[1] = cmd[2]; /*sanity */ | |
1348 | arr[3] = inquiry_evpd_85(&arr[4]); | |
1349 | } else if (0x86 == cmd[2]) { /* extended inquiry */ | |
1350 | arr[1] = cmd[2]; /*sanity */ | |
1351 | arr[3] = 0x3c; /* number of following entries */ | |
c6a44287 MP |
1352 | if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) |
1353 | arr[4] = 0x4; /* SPT: GRD_CHK:1 */ | |
1354 | else if (scsi_debug_dif) | |
1355 | arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ | |
1356 | else | |
1357 | arr[4] = 0x0; /* no protection stuff */ | |
c65b1445 DG |
1358 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
1359 | } else if (0x87 == cmd[2]) { /* mode page policy */ | |
1360 | arr[1] = cmd[2]; /*sanity */ | |
1361 | arr[3] = 0x8; /* number of following entries */ | |
1362 | arr[4] = 0x2; /* disconnect-reconnect mp */ | |
1363 | arr[6] = 0x80; /* mlus, shared */ | |
1364 | arr[8] = 0x18; /* protocol specific lu */ | |
1365 | arr[10] = 0x82; /* mlus, per initiator port */ | |
1366 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ | |
1367 | arr[1] = cmd[2]; /*sanity */ | |
1368 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); | |
1369 | } else if (0x89 == cmd[2]) { /* ATA information */ | |
1370 | arr[1] = cmd[2]; /*sanity */ | |
1371 | n = inquiry_evpd_89(&arr[4]); | |
1372 | arr[2] = (n >> 8); | |
1373 | arr[3] = (n & 0xff); | |
1374 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ | |
1375 | arr[1] = cmd[2]; /*sanity */ | |
1376 | arr[3] = inquiry_evpd_b0(&arr[4]); | |
eac6e8e4 MW |
1377 | } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */ |
1378 | arr[1] = cmd[2]; /*sanity */ | |
1379 | arr[3] = inquiry_evpd_b1(&arr[4]); | |
5b94e232 | 1380 | } else if (0xb2 == cmd[2]) { /* Logical Block Prov. (SBC) */ |
6014759c MP |
1381 | arr[1] = cmd[2]; /*sanity */ |
1382 | arr[3] = inquiry_evpd_b2(&arr[4]); | |
1da177e4 | 1383 | } else { |
22017ed2 | 1384 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); |
5a09e398 | 1385 | kfree(arr); |
1da177e4 LT |
1386 | return check_condition_result; |
1387 | } | |
c65b1445 | 1388 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
5a09e398 | 1389 | ret = fill_from_dev_buffer(scp, arr, |
c65b1445 | 1390 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
5a09e398 HR |
1391 | kfree(arr); |
1392 | return ret; | |
1da177e4 LT |
1393 | } |
1394 | /* drops through here for a standard inquiry */ | |
d986788b | 1395 | arr[1] = scsi_debug_removable ? 0x80 : 0; /* Removable disk */ |
1da177e4 LT |
1396 | arr[2] = scsi_debug_scsi_level; |
1397 | arr[3] = 2; /* response_data_format==2 */ | |
1398 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; | |
c6a44287 | 1399 | arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */ |
5a09e398 HR |
1400 | if (0 == scsi_debug_vpd_use_hostno) |
1401 | arr[5] = 0x10; /* claim: implicit TGPS */ | |
c65b1445 | 1402 | arr[6] = 0x10; /* claim: MultiP */ |
1da177e4 | 1403 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
c65b1445 | 1404 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
1da177e4 LT |
1405 | memcpy(&arr[8], inq_vendor_id, 8); |
1406 | memcpy(&arr[16], inq_product_id, 16); | |
1407 | memcpy(&arr[32], inq_product_rev, 4); | |
1408 | /* version descriptors (2 bytes each) follow */ | |
e46b0344 DG |
1409 | arr[58] = 0x0; arr[59] = 0xa2; /* SAM-5 rev 4 */ |
1410 | arr[60] = 0x4; arr[61] = 0x68; /* SPC-4 rev 37 */ | |
c65b1445 | 1411 | n = 62; |
1da177e4 | 1412 | if (scsi_debug_ptype == 0) { |
e46b0344 | 1413 | arr[n++] = 0x4; arr[n++] = 0xc5; /* SBC-4 rev 36 */ |
1da177e4 | 1414 | } else if (scsi_debug_ptype == 1) { |
e46b0344 | 1415 | arr[n++] = 0x5; arr[n++] = 0x25; /* SSC-4 rev 3 */ |
1da177e4 | 1416 | } |
e46b0344 | 1417 | arr[n++] = 0x20; arr[n++] = 0xe6; /* SPL-3 rev 7 */ |
5a09e398 | 1418 | ret = fill_from_dev_buffer(scp, arr, |
1da177e4 | 1419 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
5a09e398 HR |
1420 | kfree(arr); |
1421 | return ret; | |
1da177e4 LT |
1422 | } |
1423 | ||
1424 | static int resp_requests(struct scsi_cmnd * scp, | |
1425 | struct sdebug_dev_info * devip) | |
1426 | { | |
1427 | unsigned char * sbuff; | |
01123ef4 | 1428 | unsigned char *cmd = scp->cmnd; |
cbf67842 | 1429 | unsigned char arr[SCSI_SENSE_BUFFERSIZE]; |
c2248fc9 | 1430 | bool dsense, want_dsense; |
1da177e4 LT |
1431 | int len = 18; |
1432 | ||
c65b1445 | 1433 | memset(arr, 0, sizeof(arr)); |
c2248fc9 DG |
1434 | dsense = !!(cmd[1] & 1); |
1435 | want_dsense = dsense || scsi_debug_dsense; | |
cbf67842 | 1436 | sbuff = scp->sense_buffer; |
c65b1445 | 1437 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
c2248fc9 | 1438 | if (dsense) { |
c65b1445 DG |
1439 | arr[0] = 0x72; |
1440 | arr[1] = 0x0; /* NO_SENSE in sense_key */ | |
1441 | arr[2] = THRESHOLD_EXCEEDED; | |
1442 | arr[3] = 0xff; /* TEST set and MRIE==6 */ | |
c2248fc9 | 1443 | len = 8; |
c65b1445 DG |
1444 | } else { |
1445 | arr[0] = 0x70; | |
1446 | arr[2] = 0x0; /* NO_SENSE in sense_key */ | |
1447 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
1448 | arr[12] = THRESHOLD_EXCEEDED; | |
1449 | arr[13] = 0xff; /* TEST set and MRIE==6 */ | |
1450 | } | |
c65b1445 | 1451 | } else { |
cbf67842 | 1452 | memcpy(arr, sbuff, SCSI_SENSE_BUFFERSIZE); |
c2248fc9 DG |
1453 | if (arr[0] >= 0x70 && dsense == scsi_debug_dsense) |
1454 | ; /* have sense and formats match */ | |
1455 | else if (arr[0] <= 0x70) { | |
1456 | if (dsense) { | |
1457 | memset(arr, 0, 8); | |
1458 | arr[0] = 0x72; | |
1459 | len = 8; | |
1460 | } else { | |
1461 | memset(arr, 0, 18); | |
1462 | arr[0] = 0x70; | |
1463 | arr[7] = 0xa; | |
1464 | } | |
1465 | } else if (dsense) { | |
1466 | memset(arr, 0, 8); | |
c65b1445 DG |
1467 | arr[0] = 0x72; |
1468 | arr[1] = sbuff[2]; /* sense key */ | |
1469 | arr[2] = sbuff[12]; /* asc */ | |
1470 | arr[3] = sbuff[13]; /* ascq */ | |
1471 | len = 8; | |
c2248fc9 DG |
1472 | } else { |
1473 | memset(arr, 0, 18); | |
1474 | arr[0] = 0x70; | |
1475 | arr[2] = sbuff[1]; | |
1476 | arr[7] = 0xa; | |
1477 | arr[12] = sbuff[1]; | |
1478 | arr[13] = sbuff[3]; | |
c65b1445 | 1479 | } |
c2248fc9 | 1480 | |
c65b1445 | 1481 | } |
cbf67842 | 1482 | mk_sense_buffer(scp, 0, NO_ADDITIONAL_SENSE, 0); |
1da177e4 LT |
1483 | return fill_from_dev_buffer(scp, arr, len); |
1484 | } | |
1485 | ||
c65b1445 DG |
1486 | static int resp_start_stop(struct scsi_cmnd * scp, |
1487 | struct sdebug_dev_info * devip) | |
1488 | { | |
01123ef4 | 1489 | unsigned char *cmd = scp->cmnd; |
c2248fc9 | 1490 | int power_cond, start; |
c65b1445 | 1491 | |
c65b1445 DG |
1492 | power_cond = (cmd[4] & 0xf0) >> 4; |
1493 | if (power_cond) { | |
22017ed2 | 1494 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, 7); |
c65b1445 DG |
1495 | return check_condition_result; |
1496 | } | |
1497 | start = cmd[4] & 1; | |
1498 | if (start == devip->stopped) | |
1499 | devip->stopped = !start; | |
1500 | return 0; | |
1501 | } | |
1502 | ||
28898873 FT |
1503 | static sector_t get_sdebug_capacity(void) |
1504 | { | |
1505 | if (scsi_debug_virtual_gb > 0) | |
5447ed6c DG |
1506 | return (sector_t)scsi_debug_virtual_gb * |
1507 | (1073741824 / scsi_debug_sector_size); | |
28898873 FT |
1508 | else |
1509 | return sdebug_store_sectors; | |
1510 | } | |
1511 | ||
1da177e4 LT |
1512 | #define SDEBUG_READCAP_ARR_SZ 8 |
1513 | static int resp_readcap(struct scsi_cmnd * scp, | |
1514 | struct sdebug_dev_info * devip) | |
1515 | { | |
1516 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; | |
c65b1445 | 1517 | unsigned int capac; |
1da177e4 | 1518 | |
c65b1445 | 1519 | /* following just in case virtual_gb changed */ |
28898873 | 1520 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 | 1521 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
c65b1445 DG |
1522 | if (sdebug_capacity < 0xffffffff) { |
1523 | capac = (unsigned int)sdebug_capacity - 1; | |
1524 | arr[0] = (capac >> 24); | |
1525 | arr[1] = (capac >> 16) & 0xff; | |
1526 | arr[2] = (capac >> 8) & 0xff; | |
1527 | arr[3] = capac & 0xff; | |
1528 | } else { | |
1529 | arr[0] = 0xff; | |
1530 | arr[1] = 0xff; | |
1531 | arr[2] = 0xff; | |
1532 | arr[3] = 0xff; | |
1533 | } | |
597136ab MP |
1534 | arr[6] = (scsi_debug_sector_size >> 8) & 0xff; |
1535 | arr[7] = scsi_debug_sector_size & 0xff; | |
1da177e4 LT |
1536 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
1537 | } | |
1538 | ||
c65b1445 DG |
1539 | #define SDEBUG_READCAP16_ARR_SZ 32 |
1540 | static int resp_readcap16(struct scsi_cmnd * scp, | |
1541 | struct sdebug_dev_info * devip) | |
1542 | { | |
01123ef4 | 1543 | unsigned char *cmd = scp->cmnd; |
c65b1445 DG |
1544 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; |
1545 | unsigned long long capac; | |
c2248fc9 | 1546 | int k, alloc_len; |
c65b1445 | 1547 | |
c65b1445 DG |
1548 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) |
1549 | + cmd[13]); | |
1550 | /* following just in case virtual_gb changed */ | |
28898873 | 1551 | sdebug_capacity = get_sdebug_capacity(); |
c65b1445 DG |
1552 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
1553 | capac = sdebug_capacity - 1; | |
1554 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1555 | arr[7 - k] = capac & 0xff; | |
597136ab MP |
1556 | arr[8] = (scsi_debug_sector_size >> 24) & 0xff; |
1557 | arr[9] = (scsi_debug_sector_size >> 16) & 0xff; | |
1558 | arr[10] = (scsi_debug_sector_size >> 8) & 0xff; | |
1559 | arr[11] = scsi_debug_sector_size & 0xff; | |
ea61fca5 MP |
1560 | arr[13] = scsi_debug_physblk_exp & 0xf; |
1561 | arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f; | |
44d92694 | 1562 | |
be1dd78d | 1563 | if (scsi_debug_lbp()) { |
5b94e232 | 1564 | arr[14] |= 0x80; /* LBPME */ |
be1dd78d ES |
1565 | if (scsi_debug_lbprz) |
1566 | arr[14] |= 0x40; /* LBPRZ */ | |
1567 | } | |
44d92694 | 1568 | |
ea61fca5 | 1569 | arr[15] = scsi_debug_lowest_aligned & 0xff; |
c6a44287 MP |
1570 | |
1571 | if (scsi_debug_dif) { | |
1572 | arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */ | |
1573 | arr[12] |= 1; /* PROT_EN */ | |
1574 | } | |
1575 | ||
c65b1445 DG |
1576 | return fill_from_dev_buffer(scp, arr, |
1577 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); | |
1578 | } | |
1579 | ||
5a09e398 HR |
1580 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
1581 | ||
1582 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, | |
1583 | struct sdebug_dev_info * devip) | |
1584 | { | |
01123ef4 | 1585 | unsigned char *cmd = scp->cmnd; |
5a09e398 HR |
1586 | unsigned char * arr; |
1587 | int host_no = devip->sdbg_host->shost->host_no; | |
1588 | int n, ret, alen, rlen; | |
1589 | int port_group_a, port_group_b, port_a, port_b; | |
1590 | ||
1591 | alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) | |
1592 | + cmd[9]); | |
1593 | ||
6f3cbf55 DG |
1594 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
1595 | if (! arr) | |
1596 | return DID_REQUEUE << 16; | |
5a09e398 HR |
1597 | /* |
1598 | * EVPD page 0x88 states we have two ports, one | |
1599 | * real and a fake port with no device connected. | |
1600 | * So we create two port groups with one port each | |
1601 | * and set the group with port B to unavailable. | |
1602 | */ | |
1603 | port_a = 0x1; /* relative port A */ | |
1604 | port_b = 0x2; /* relative port B */ | |
1605 | port_group_a = (((host_no + 1) & 0x7f) << 8) + | |
1606 | (devip->channel & 0x7f); | |
1607 | port_group_b = (((host_no + 1) & 0x7f) << 8) + | |
1608 | (devip->channel & 0x7f) + 0x80; | |
1609 | ||
1610 | /* | |
1611 | * The asymmetric access state is cycled according to the host_id. | |
1612 | */ | |
1613 | n = 4; | |
1614 | if (0 == scsi_debug_vpd_use_hostno) { | |
1615 | arr[n++] = host_no % 3; /* Asymm access state */ | |
1616 | arr[n++] = 0x0F; /* claim: all states are supported */ | |
1617 | } else { | |
1618 | arr[n++] = 0x0; /* Active/Optimized path */ | |
1619 | arr[n++] = 0x01; /* claim: only support active/optimized paths */ | |
1620 | } | |
1621 | arr[n++] = (port_group_a >> 8) & 0xff; | |
1622 | arr[n++] = port_group_a & 0xff; | |
1623 | arr[n++] = 0; /* Reserved */ | |
1624 | arr[n++] = 0; /* Status code */ | |
1625 | arr[n++] = 0; /* Vendor unique */ | |
1626 | arr[n++] = 0x1; /* One port per group */ | |
1627 | arr[n++] = 0; /* Reserved */ | |
1628 | arr[n++] = 0; /* Reserved */ | |
1629 | arr[n++] = (port_a >> 8) & 0xff; | |
1630 | arr[n++] = port_a & 0xff; | |
1631 | arr[n++] = 3; /* Port unavailable */ | |
1632 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ | |
1633 | arr[n++] = (port_group_b >> 8) & 0xff; | |
1634 | arr[n++] = port_group_b & 0xff; | |
1635 | arr[n++] = 0; /* Reserved */ | |
1636 | arr[n++] = 0; /* Status code */ | |
1637 | arr[n++] = 0; /* Vendor unique */ | |
1638 | arr[n++] = 0x1; /* One port per group */ | |
1639 | arr[n++] = 0; /* Reserved */ | |
1640 | arr[n++] = 0; /* Reserved */ | |
1641 | arr[n++] = (port_b >> 8) & 0xff; | |
1642 | arr[n++] = port_b & 0xff; | |
1643 | ||
1644 | rlen = n - 4; | |
1645 | arr[0] = (rlen >> 24) & 0xff; | |
1646 | arr[1] = (rlen >> 16) & 0xff; | |
1647 | arr[2] = (rlen >> 8) & 0xff; | |
1648 | arr[3] = rlen & 0xff; | |
1649 | ||
1650 | /* | |
1651 | * Return the smallest value of either | |
1652 | * - The allocated length | |
1653 | * - The constructed command length | |
1654 | * - The maximum array size | |
1655 | */ | |
1656 | rlen = min(alen,n); | |
1657 | ret = fill_from_dev_buffer(scp, arr, | |
1658 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); | |
1659 | kfree(arr); | |
1660 | return ret; | |
1661 | } | |
1662 | ||
38d5c833 DG |
1663 | static int |
1664 | resp_rsup_opcodes(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
1665 | { | |
1666 | bool rctd; | |
1667 | u8 reporting_opts, req_opcode, sdeb_i, supp; | |
1668 | u16 req_sa, u; | |
1669 | u32 alloc_len, a_len; | |
1670 | int k, offset, len, errsts, count, bump, na; | |
1671 | const struct opcode_info_t *oip; | |
1672 | const struct opcode_info_t *r_oip; | |
1673 | u8 *arr; | |
1674 | u8 *cmd = scp->cmnd; | |
1675 | ||
1676 | rctd = !!(cmd[2] & 0x80); | |
1677 | reporting_opts = cmd[2] & 0x7; | |
1678 | req_opcode = cmd[3]; | |
1679 | req_sa = get_unaligned_be16(cmd + 4); | |
1680 | alloc_len = get_unaligned_be32(cmd + 6); | |
6d310dfb | 1681 | if (alloc_len < 4 || alloc_len > 0xffff) { |
38d5c833 DG |
1682 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); |
1683 | return check_condition_result; | |
1684 | } | |
1685 | if (alloc_len > 8192) | |
1686 | a_len = 8192; | |
1687 | else | |
1688 | a_len = alloc_len; | |
99531e60 | 1689 | arr = kzalloc((a_len < 256) ? 320 : a_len + 64, GFP_ATOMIC); |
38d5c833 DG |
1690 | if (NULL == arr) { |
1691 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
1692 | INSUFF_RES_ASCQ); | |
1693 | return check_condition_result; | |
1694 | } | |
1695 | switch (reporting_opts) { | |
1696 | case 0: /* all commands */ | |
1697 | /* count number of commands */ | |
1698 | for (count = 0, oip = opcode_info_arr; | |
1699 | oip->num_attached != 0xff; ++oip) { | |
1700 | if (F_INV_OP & oip->flags) | |
1701 | continue; | |
1702 | count += (oip->num_attached + 1); | |
1703 | } | |
1704 | bump = rctd ? 20 : 8; | |
1705 | put_unaligned_be32(count * bump, arr); | |
1706 | for (offset = 4, oip = opcode_info_arr; | |
1707 | oip->num_attached != 0xff && offset < a_len; ++oip) { | |
1708 | if (F_INV_OP & oip->flags) | |
1709 | continue; | |
1710 | na = oip->num_attached; | |
1711 | arr[offset] = oip->opcode; | |
1712 | put_unaligned_be16(oip->sa, arr + offset + 2); | |
1713 | if (rctd) | |
1714 | arr[offset + 5] |= 0x2; | |
1715 | if (FF_SA & oip->flags) | |
1716 | arr[offset + 5] |= 0x1; | |
1717 | put_unaligned_be16(oip->len_mask[0], arr + offset + 6); | |
1718 | if (rctd) | |
1719 | put_unaligned_be16(0xa, arr + offset + 8); | |
1720 | r_oip = oip; | |
1721 | for (k = 0, oip = oip->arrp; k < na; ++k, ++oip) { | |
1722 | if (F_INV_OP & oip->flags) | |
1723 | continue; | |
1724 | offset += bump; | |
1725 | arr[offset] = oip->opcode; | |
1726 | put_unaligned_be16(oip->sa, arr + offset + 2); | |
1727 | if (rctd) | |
1728 | arr[offset + 5] |= 0x2; | |
1729 | if (FF_SA & oip->flags) | |
1730 | arr[offset + 5] |= 0x1; | |
1731 | put_unaligned_be16(oip->len_mask[0], | |
1732 | arr + offset + 6); | |
1733 | if (rctd) | |
1734 | put_unaligned_be16(0xa, | |
1735 | arr + offset + 8); | |
1736 | } | |
1737 | oip = r_oip; | |
1738 | offset += bump; | |
1739 | } | |
1740 | break; | |
1741 | case 1: /* one command: opcode only */ | |
1742 | case 2: /* one command: opcode plus service action */ | |
1743 | case 3: /* one command: if sa==0 then opcode only else opcode+sa */ | |
1744 | sdeb_i = opcode_ind_arr[req_opcode]; | |
1745 | oip = &opcode_info_arr[sdeb_i]; | |
1746 | if (F_INV_OP & oip->flags) { | |
1747 | supp = 1; | |
1748 | offset = 4; | |
1749 | } else { | |
1750 | if (1 == reporting_opts) { | |
1751 | if (FF_SA & oip->flags) { | |
1752 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, | |
1753 | 2, 2); | |
1754 | kfree(arr); | |
1755 | return check_condition_result; | |
1756 | } | |
1757 | req_sa = 0; | |
1758 | } else if (2 == reporting_opts && | |
1759 | 0 == (FF_SA & oip->flags)) { | |
1760 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, -1); | |
1761 | kfree(arr); /* point at requested sa */ | |
1762 | return check_condition_result; | |
1763 | } | |
1764 | if (0 == (FF_SA & oip->flags) && | |
1765 | req_opcode == oip->opcode) | |
1766 | supp = 3; | |
1767 | else if (0 == (FF_SA & oip->flags)) { | |
1768 | na = oip->num_attached; | |
1769 | for (k = 0, oip = oip->arrp; k < na; | |
1770 | ++k, ++oip) { | |
1771 | if (req_opcode == oip->opcode) | |
1772 | break; | |
1773 | } | |
1774 | supp = (k >= na) ? 1 : 3; | |
1775 | } else if (req_sa != oip->sa) { | |
1776 | na = oip->num_attached; | |
1777 | for (k = 0, oip = oip->arrp; k < na; | |
1778 | ++k, ++oip) { | |
1779 | if (req_sa == oip->sa) | |
1780 | break; | |
1781 | } | |
1782 | supp = (k >= na) ? 1 : 3; | |
1783 | } else | |
1784 | supp = 3; | |
1785 | if (3 == supp) { | |
1786 | u = oip->len_mask[0]; | |
1787 | put_unaligned_be16(u, arr + 2); | |
1788 | arr[4] = oip->opcode; | |
1789 | for (k = 1; k < u; ++k) | |
1790 | arr[4 + k] = (k < 16) ? | |
1791 | oip->len_mask[k] : 0xff; | |
1792 | offset = 4 + u; | |
1793 | } else | |
1794 | offset = 4; | |
1795 | } | |
1796 | arr[1] = (rctd ? 0x80 : 0) | supp; | |
1797 | if (rctd) { | |
1798 | put_unaligned_be16(0xa, arr + offset); | |
1799 | offset += 12; | |
1800 | } | |
1801 | break; | |
1802 | default: | |
1803 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 2); | |
1804 | kfree(arr); | |
1805 | return check_condition_result; | |
1806 | } | |
1807 | offset = (offset < a_len) ? offset : a_len; | |
1808 | len = (offset < alloc_len) ? offset : alloc_len; | |
1809 | errsts = fill_from_dev_buffer(scp, arr, len); | |
1810 | kfree(arr); | |
1811 | return errsts; | |
1812 | } | |
1813 | ||
1814 | static int | |
1815 | resp_rsup_tmfs(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
1816 | { | |
1817 | bool repd; | |
1818 | u32 alloc_len, len; | |
1819 | u8 arr[16]; | |
1820 | u8 *cmd = scp->cmnd; | |
1821 | ||
1822 | memset(arr, 0, sizeof(arr)); | |
1823 | repd = !!(cmd[2] & 0x80); | |
1824 | alloc_len = get_unaligned_be32(cmd + 6); | |
1825 | if (alloc_len < 4) { | |
1826 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); | |
1827 | return check_condition_result; | |
1828 | } | |
1829 | arr[0] = 0xc8; /* ATS | ATSS | LURS */ | |
1830 | arr[1] = 0x1; /* ITNRS */ | |
1831 | if (repd) { | |
1832 | arr[3] = 0xc; | |
1833 | len = 16; | |
1834 | } else | |
1835 | len = 4; | |
1836 | ||
1837 | len = (len < alloc_len) ? len : alloc_len; | |
1838 | return fill_from_dev_buffer(scp, arr, len); | |
1839 | } | |
1840 | ||
1da177e4 LT |
1841 | /* <<Following mode page info copied from ST318451LW>> */ |
1842 | ||
1843 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) | |
1844 | { /* Read-Write Error Recovery page for mode_sense */ | |
1845 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, | |
1846 | 5, 0, 0xff, 0xff}; | |
1847 | ||
1848 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); | |
1849 | if (1 == pcontrol) | |
1850 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); | |
1851 | return sizeof(err_recov_pg); | |
1852 | } | |
1853 | ||
1854 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) | |
1855 | { /* Disconnect-Reconnect page for mode_sense */ | |
1856 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, | |
1857 | 0, 0, 0, 0, 0, 0, 0, 0}; | |
1858 | ||
1859 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); | |
1860 | if (1 == pcontrol) | |
1861 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); | |
1862 | return sizeof(disconnect_pg); | |
1863 | } | |
1864 | ||
1865 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) | |
1866 | { /* Format device page for mode_sense */ | |
597136ab MP |
1867 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
1868 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1869 | 0, 0, 0, 0, 0x40, 0, 0, 0}; | |
1870 | ||
1871 | memcpy(p, format_pg, sizeof(format_pg)); | |
1872 | p[10] = (sdebug_sectors_per >> 8) & 0xff; | |
1873 | p[11] = sdebug_sectors_per & 0xff; | |
1874 | p[12] = (scsi_debug_sector_size >> 8) & 0xff; | |
1875 | p[13] = scsi_debug_sector_size & 0xff; | |
d986788b | 1876 | if (scsi_debug_removable) |
597136ab MP |
1877 | p[20] |= 0x20; /* should agree with INQUIRY */ |
1878 | if (1 == pcontrol) | |
1879 | memset(p + 2, 0, sizeof(format_pg) - 2); | |
1880 | return sizeof(format_pg); | |
1da177e4 LT |
1881 | } |
1882 | ||
1883 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) | |
1884 | { /* Caching page for mode_sense */ | |
cbf67842 DG |
1885 | unsigned char ch_caching_pg[] = {/* 0x8, 18, */ 0x4, 0, 0, 0, 0, 0, |
1886 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; | |
1887 | unsigned char d_caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
1da177e4 LT |
1888 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; |
1889 | ||
cbf67842 DG |
1890 | if (SCSI_DEBUG_OPT_N_WCE & scsi_debug_opts) |
1891 | caching_pg[2] &= ~0x4; /* set WCE=0 (default WCE=1) */ | |
1da177e4 LT |
1892 | memcpy(p, caching_pg, sizeof(caching_pg)); |
1893 | if (1 == pcontrol) | |
cbf67842 DG |
1894 | memcpy(p + 2, ch_caching_pg, sizeof(ch_caching_pg)); |
1895 | else if (2 == pcontrol) | |
1896 | memcpy(p, d_caching_pg, sizeof(d_caching_pg)); | |
1da177e4 LT |
1897 | return sizeof(caching_pg); |
1898 | } | |
1899 | ||
1900 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) | |
1901 | { /* Control mode page for mode_sense */ | |
c65b1445 DG |
1902 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
1903 | 0, 0, 0, 0}; | |
1904 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, | |
1da177e4 LT |
1905 | 0, 0, 0x2, 0x4b}; |
1906 | ||
1907 | if (scsi_debug_dsense) | |
1908 | ctrl_m_pg[2] |= 0x4; | |
c65b1445 DG |
1909 | else |
1910 | ctrl_m_pg[2] &= ~0x4; | |
c6a44287 MP |
1911 | |
1912 | if (scsi_debug_ato) | |
1913 | ctrl_m_pg[5] |= 0x80; /* ATO=1 */ | |
1914 | ||
1da177e4 LT |
1915 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
1916 | if (1 == pcontrol) | |
c65b1445 DG |
1917 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
1918 | else if (2 == pcontrol) | |
1919 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); | |
1da177e4 LT |
1920 | return sizeof(ctrl_m_pg); |
1921 | } | |
1922 | ||
c65b1445 | 1923 | |
1da177e4 LT |
1924 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
1925 | { /* Informational Exceptions control mode page for mode_sense */ | |
c65b1445 DG |
1926 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
1927 | 0, 0, 0x0, 0x0}; | |
1928 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
1929 | 0, 0, 0x0, 0x0}; | |
1930 | ||
1da177e4 LT |
1931 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
1932 | if (1 == pcontrol) | |
c65b1445 DG |
1933 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
1934 | else if (2 == pcontrol) | |
1935 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); | |
1da177e4 LT |
1936 | return sizeof(iec_m_pg); |
1937 | } | |
1938 | ||
c65b1445 DG |
1939 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
1940 | { /* SAS SSP mode page - short format for mode_sense */ | |
1941 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, | |
1942 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; | |
1943 | ||
1944 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); | |
1945 | if (1 == pcontrol) | |
1946 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); | |
1947 | return sizeof(sas_sf_m_pg); | |
1948 | } | |
1949 | ||
1950 | ||
1951 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, | |
1952 | int target_dev_id) | |
1953 | { /* SAS phy control and discover mode page for mode_sense */ | |
1954 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, | |
1955 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1956 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1957 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1958 | 0x2, 0, 0, 0, 0, 0, 0, 0, | |
1959 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1960 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1961 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1962 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1963 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1964 | 0x3, 0, 0, 0, 0, 0, 0, 0, | |
1965 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1966 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1967 | }; | |
1968 | int port_a, port_b; | |
1969 | ||
1970 | port_a = target_dev_id + 1; | |
1971 | port_b = port_a + 1; | |
1972 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); | |
1973 | p[20] = (port_a >> 24); | |
1974 | p[21] = (port_a >> 16) & 0xff; | |
1975 | p[22] = (port_a >> 8) & 0xff; | |
1976 | p[23] = port_a & 0xff; | |
1977 | p[48 + 20] = (port_b >> 24); | |
1978 | p[48 + 21] = (port_b >> 16) & 0xff; | |
1979 | p[48 + 22] = (port_b >> 8) & 0xff; | |
1980 | p[48 + 23] = port_b & 0xff; | |
1981 | if (1 == pcontrol) | |
1982 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); | |
1983 | return sizeof(sas_pcd_m_pg); | |
1984 | } | |
1985 | ||
1986 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) | |
1987 | { /* SAS SSP shared protocol specific port mode subpage */ | |
1988 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, | |
1989 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1990 | }; | |
1991 | ||
1992 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); | |
1993 | if (1 == pcontrol) | |
1994 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); | |
1995 | return sizeof(sas_sha_m_pg); | |
1996 | } | |
1997 | ||
1da177e4 LT |
1998 | #define SDEBUG_MAX_MSENSE_SZ 256 |
1999 | ||
c2248fc9 DG |
2000 | static int |
2001 | resp_mode_sense(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
1da177e4 | 2002 | { |
23183910 DG |
2003 | unsigned char dbd, llbaa; |
2004 | int pcontrol, pcode, subpcode, bd_len; | |
1da177e4 | 2005 | unsigned char dev_spec; |
c2248fc9 DG |
2006 | int k, alloc_len, msense_6, offset, len, target_dev_id; |
2007 | int target = scp->device->id; | |
1da177e4 LT |
2008 | unsigned char * ap; |
2009 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; | |
01123ef4 | 2010 | unsigned char *cmd = scp->cmnd; |
1da177e4 | 2011 | |
23183910 | 2012 | dbd = !!(cmd[1] & 0x8); |
1da177e4 LT |
2013 | pcontrol = (cmd[2] & 0xc0) >> 6; |
2014 | pcode = cmd[2] & 0x3f; | |
2015 | subpcode = cmd[3]; | |
2016 | msense_6 = (MODE_SENSE == cmd[0]); | |
23183910 DG |
2017 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
2018 | if ((0 == scsi_debug_ptype) && (0 == dbd)) | |
2019 | bd_len = llbaa ? 16 : 8; | |
2020 | else | |
2021 | bd_len = 0; | |
1da177e4 LT |
2022 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
2023 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); | |
2024 | if (0x3 == pcontrol) { /* Saving values not supported */ | |
cbf67842 | 2025 | mk_sense_buffer(scp, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, 0); |
1da177e4 LT |
2026 | return check_condition_result; |
2027 | } | |
c65b1445 DG |
2028 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
2029 | (devip->target * 1000) - 3; | |
23183910 DG |
2030 | /* set DPOFUA bit for disks */ |
2031 | if (0 == scsi_debug_ptype) | |
2032 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; | |
2033 | else | |
2034 | dev_spec = 0x0; | |
1da177e4 LT |
2035 | if (msense_6) { |
2036 | arr[2] = dev_spec; | |
23183910 | 2037 | arr[3] = bd_len; |
1da177e4 LT |
2038 | offset = 4; |
2039 | } else { | |
2040 | arr[3] = dev_spec; | |
23183910 DG |
2041 | if (16 == bd_len) |
2042 | arr[4] = 0x1; /* set LONGLBA bit */ | |
2043 | arr[7] = bd_len; /* assume 255 or less */ | |
1da177e4 LT |
2044 | offset = 8; |
2045 | } | |
2046 | ap = arr + offset; | |
28898873 FT |
2047 | if ((bd_len > 0) && (!sdebug_capacity)) |
2048 | sdebug_capacity = get_sdebug_capacity(); | |
2049 | ||
23183910 DG |
2050 | if (8 == bd_len) { |
2051 | if (sdebug_capacity > 0xfffffffe) { | |
2052 | ap[0] = 0xff; | |
2053 | ap[1] = 0xff; | |
2054 | ap[2] = 0xff; | |
2055 | ap[3] = 0xff; | |
2056 | } else { | |
2057 | ap[0] = (sdebug_capacity >> 24) & 0xff; | |
2058 | ap[1] = (sdebug_capacity >> 16) & 0xff; | |
2059 | ap[2] = (sdebug_capacity >> 8) & 0xff; | |
2060 | ap[3] = sdebug_capacity & 0xff; | |
2061 | } | |
597136ab MP |
2062 | ap[6] = (scsi_debug_sector_size >> 8) & 0xff; |
2063 | ap[7] = scsi_debug_sector_size & 0xff; | |
23183910 DG |
2064 | offset += bd_len; |
2065 | ap = arr + offset; | |
2066 | } else if (16 == bd_len) { | |
2067 | unsigned long long capac = sdebug_capacity; | |
2068 | ||
2069 | for (k = 0; k < 8; ++k, capac >>= 8) | |
2070 | ap[7 - k] = capac & 0xff; | |
597136ab MP |
2071 | ap[12] = (scsi_debug_sector_size >> 24) & 0xff; |
2072 | ap[13] = (scsi_debug_sector_size >> 16) & 0xff; | |
2073 | ap[14] = (scsi_debug_sector_size >> 8) & 0xff; | |
2074 | ap[15] = scsi_debug_sector_size & 0xff; | |
23183910 DG |
2075 | offset += bd_len; |
2076 | ap = arr + offset; | |
2077 | } | |
1da177e4 | 2078 | |
c65b1445 DG |
2079 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
2080 | /* TODO: Control Extension page */ | |
22017ed2 | 2081 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
1da177e4 LT |
2082 | return check_condition_result; |
2083 | } | |
2084 | switch (pcode) { | |
2085 | case 0x1: /* Read-Write error recovery page, direct access */ | |
2086 | len = resp_err_recov_pg(ap, pcontrol, target); | |
2087 | offset += len; | |
2088 | break; | |
2089 | case 0x2: /* Disconnect-Reconnect page, all devices */ | |
2090 | len = resp_disconnect_pg(ap, pcontrol, target); | |
2091 | offset += len; | |
2092 | break; | |
2093 | case 0x3: /* Format device page, direct access */ | |
2094 | len = resp_format_pg(ap, pcontrol, target); | |
2095 | offset += len; | |
2096 | break; | |
2097 | case 0x8: /* Caching page, direct access */ | |
2098 | len = resp_caching_pg(ap, pcontrol, target); | |
2099 | offset += len; | |
2100 | break; | |
2101 | case 0xa: /* Control Mode page, all devices */ | |
2102 | len = resp_ctrl_m_pg(ap, pcontrol, target); | |
2103 | offset += len; | |
2104 | break; | |
c65b1445 DG |
2105 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
2106 | if ((subpcode > 0x2) && (subpcode < 0xff)) { | |
22017ed2 | 2107 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
c65b1445 DG |
2108 | return check_condition_result; |
2109 | } | |
2110 | len = 0; | |
2111 | if ((0x0 == subpcode) || (0xff == subpcode)) | |
2112 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
2113 | if ((0x1 == subpcode) || (0xff == subpcode)) | |
2114 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, | |
2115 | target_dev_id); | |
2116 | if ((0x2 == subpcode) || (0xff == subpcode)) | |
2117 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
2118 | offset += len; | |
2119 | break; | |
1da177e4 LT |
2120 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
2121 | len = resp_iec_m_pg(ap, pcontrol, target); | |
2122 | offset += len; | |
2123 | break; | |
2124 | case 0x3f: /* Read all Mode pages */ | |
c65b1445 DG |
2125 | if ((0 == subpcode) || (0xff == subpcode)) { |
2126 | len = resp_err_recov_pg(ap, pcontrol, target); | |
2127 | len += resp_disconnect_pg(ap + len, pcontrol, target); | |
2128 | len += resp_format_pg(ap + len, pcontrol, target); | |
2129 | len += resp_caching_pg(ap + len, pcontrol, target); | |
2130 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); | |
2131 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
2132 | if (0xff == subpcode) { | |
2133 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, | |
2134 | target, target_dev_id); | |
2135 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
2136 | } | |
2137 | len += resp_iec_m_pg(ap + len, pcontrol, target); | |
2138 | } else { | |
22017ed2 | 2139 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
c65b1445 DG |
2140 | return check_condition_result; |
2141 | } | |
1da177e4 LT |
2142 | offset += len; |
2143 | break; | |
2144 | default: | |
22017ed2 | 2145 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
1da177e4 LT |
2146 | return check_condition_result; |
2147 | } | |
2148 | if (msense_6) | |
2149 | arr[0] = offset - 1; | |
2150 | else { | |
2151 | arr[0] = ((offset - 2) >> 8) & 0xff; | |
2152 | arr[1] = (offset - 2) & 0xff; | |
2153 | } | |
2154 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); | |
2155 | } | |
2156 | ||
c65b1445 DG |
2157 | #define SDEBUG_MAX_MSELECT_SZ 512 |
2158 | ||
c2248fc9 DG |
2159 | static int |
2160 | resp_mode_select(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
c65b1445 DG |
2161 | { |
2162 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; | |
c2248fc9 | 2163 | int param_len, res, mpage; |
c65b1445 | 2164 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; |
01123ef4 | 2165 | unsigned char *cmd = scp->cmnd; |
c2248fc9 | 2166 | int mselect6 = (MODE_SELECT == cmd[0]); |
c65b1445 | 2167 | |
c65b1445 DG |
2168 | memset(arr, 0, sizeof(arr)); |
2169 | pf = cmd[1] & 0x10; | |
2170 | sp = cmd[1] & 0x1; | |
2171 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); | |
2172 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { | |
22017ed2 | 2173 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, mselect6 ? 4 : 7, -1); |
c65b1445 DG |
2174 | return check_condition_result; |
2175 | } | |
2176 | res = fetch_to_dev_buffer(scp, arr, param_len); | |
2177 | if (-1 == res) | |
2178 | return (DID_ERROR << 16); | |
2179 | else if ((res < param_len) && | |
2180 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
cbf67842 DG |
2181 | sdev_printk(KERN_INFO, scp->device, |
2182 | "%s: cdb indicated=%d, IO sent=%d bytes\n", | |
2183 | __func__, param_len, res); | |
c65b1445 DG |
2184 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); |
2185 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); | |
23183910 | 2186 | if (md_len > 2) { |
22017ed2 | 2187 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, 0, -1); |
c65b1445 DG |
2188 | return check_condition_result; |
2189 | } | |
2190 | off = bd_len + (mselect6 ? 4 : 8); | |
2191 | mpage = arr[off] & 0x3f; | |
2192 | ps = !!(arr[off] & 0x80); | |
2193 | if (ps) { | |
22017ed2 | 2194 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 7); |
c65b1445 DG |
2195 | return check_condition_result; |
2196 | } | |
2197 | spf = !!(arr[off] & 0x40); | |
2198 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : | |
2199 | (arr[off + 1] + 2); | |
2200 | if ((pg_len + off) > param_len) { | |
cbf67842 | 2201 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
c65b1445 DG |
2202 | PARAMETER_LIST_LENGTH_ERR, 0); |
2203 | return check_condition_result; | |
2204 | } | |
2205 | switch (mpage) { | |
cbf67842 DG |
2206 | case 0x8: /* Caching Mode page */ |
2207 | if (caching_pg[1] == arr[off + 1]) { | |
2208 | memcpy(caching_pg + 2, arr + off + 2, | |
2209 | sizeof(caching_pg) - 2); | |
2210 | goto set_mode_changed_ua; | |
2211 | } | |
2212 | break; | |
c65b1445 DG |
2213 | case 0xa: /* Control Mode page */ |
2214 | if (ctrl_m_pg[1] == arr[off + 1]) { | |
2215 | memcpy(ctrl_m_pg + 2, arr + off + 2, | |
2216 | sizeof(ctrl_m_pg) - 2); | |
2217 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); | |
cbf67842 | 2218 | goto set_mode_changed_ua; |
c65b1445 DG |
2219 | } |
2220 | break; | |
2221 | case 0x1c: /* Informational Exceptions Mode page */ | |
2222 | if (iec_m_pg[1] == arr[off + 1]) { | |
2223 | memcpy(iec_m_pg + 2, arr + off + 2, | |
2224 | sizeof(iec_m_pg) - 2); | |
cbf67842 | 2225 | goto set_mode_changed_ua; |
c65b1445 DG |
2226 | } |
2227 | break; | |
2228 | default: | |
2229 | break; | |
2230 | } | |
22017ed2 | 2231 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 5); |
c65b1445 | 2232 | return check_condition_result; |
cbf67842 DG |
2233 | set_mode_changed_ua: |
2234 | set_bit(SDEBUG_UA_MODE_CHANGED, devip->uas_bm); | |
2235 | return 0; | |
c65b1445 DG |
2236 | } |
2237 | ||
2238 | static int resp_temp_l_pg(unsigned char * arr) | |
2239 | { | |
2240 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, | |
2241 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, | |
2242 | }; | |
2243 | ||
2244 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); | |
2245 | return sizeof(temp_l_pg); | |
2246 | } | |
2247 | ||
2248 | static int resp_ie_l_pg(unsigned char * arr) | |
2249 | { | |
2250 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, | |
2251 | }; | |
2252 | ||
2253 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); | |
2254 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ | |
2255 | arr[4] = THRESHOLD_EXCEEDED; | |
2256 | arr[5] = 0xff; | |
2257 | } | |
2258 | return sizeof(ie_l_pg); | |
2259 | } | |
2260 | ||
2261 | #define SDEBUG_MAX_LSENSE_SZ 512 | |
2262 | ||
2263 | static int resp_log_sense(struct scsi_cmnd * scp, | |
2264 | struct sdebug_dev_info * devip) | |
2265 | { | |
c2248fc9 | 2266 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, len, n; |
c65b1445 | 2267 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
01123ef4 | 2268 | unsigned char *cmd = scp->cmnd; |
c65b1445 | 2269 | |
c65b1445 DG |
2270 | memset(arr, 0, sizeof(arr)); |
2271 | ppc = cmd[1] & 0x2; | |
2272 | sp = cmd[1] & 0x1; | |
2273 | if (ppc || sp) { | |
22017ed2 | 2274 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, ppc ? 1 : 0); |
c65b1445 DG |
2275 | return check_condition_result; |
2276 | } | |
2277 | pcontrol = (cmd[2] & 0xc0) >> 6; | |
2278 | pcode = cmd[2] & 0x3f; | |
23183910 | 2279 | subpcode = cmd[3] & 0xff; |
c65b1445 DG |
2280 | alloc_len = (cmd[7] << 8) + cmd[8]; |
2281 | arr[0] = pcode; | |
23183910 DG |
2282 | if (0 == subpcode) { |
2283 | switch (pcode) { | |
2284 | case 0x0: /* Supported log pages log page */ | |
2285 | n = 4; | |
2286 | arr[n++] = 0x0; /* this page */ | |
2287 | arr[n++] = 0xd; /* Temperature */ | |
2288 | arr[n++] = 0x2f; /* Informational exceptions */ | |
2289 | arr[3] = n - 4; | |
2290 | break; | |
2291 | case 0xd: /* Temperature log page */ | |
2292 | arr[3] = resp_temp_l_pg(arr + 4); | |
2293 | break; | |
2294 | case 0x2f: /* Informational exceptions log page */ | |
2295 | arr[3] = resp_ie_l_pg(arr + 4); | |
2296 | break; | |
2297 | default: | |
22017ed2 | 2298 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
23183910 DG |
2299 | return check_condition_result; |
2300 | } | |
2301 | } else if (0xff == subpcode) { | |
2302 | arr[0] |= 0x40; | |
2303 | arr[1] = subpcode; | |
2304 | switch (pcode) { | |
2305 | case 0x0: /* Supported log pages and subpages log page */ | |
2306 | n = 4; | |
2307 | arr[n++] = 0x0; | |
2308 | arr[n++] = 0x0; /* 0,0 page */ | |
2309 | arr[n++] = 0x0; | |
2310 | arr[n++] = 0xff; /* this page */ | |
2311 | arr[n++] = 0xd; | |
2312 | arr[n++] = 0x0; /* Temperature */ | |
2313 | arr[n++] = 0x2f; | |
2314 | arr[n++] = 0x0; /* Informational exceptions */ | |
2315 | arr[3] = n - 4; | |
2316 | break; | |
2317 | case 0xd: /* Temperature subpages */ | |
2318 | n = 4; | |
2319 | arr[n++] = 0xd; | |
2320 | arr[n++] = 0x0; /* Temperature */ | |
2321 | arr[3] = n - 4; | |
2322 | break; | |
2323 | case 0x2f: /* Informational exceptions subpages */ | |
2324 | n = 4; | |
2325 | arr[n++] = 0x2f; | |
2326 | arr[n++] = 0x0; /* Informational exceptions */ | |
2327 | arr[3] = n - 4; | |
2328 | break; | |
2329 | default: | |
22017ed2 | 2330 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
23183910 DG |
2331 | return check_condition_result; |
2332 | } | |
2333 | } else { | |
22017ed2 | 2334 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
c65b1445 DG |
2335 | return check_condition_result; |
2336 | } | |
2337 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); | |
2338 | return fill_from_dev_buffer(scp, arr, | |
2339 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); | |
2340 | } | |
2341 | ||
cbf67842 | 2342 | static int check_device_access_params(struct scsi_cmnd *scp, |
19789100 | 2343 | unsigned long long lba, unsigned int num) |
1da177e4 | 2344 | { |
c65b1445 | 2345 | if (lba + num > sdebug_capacity) { |
22017ed2 | 2346 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
1da177e4 LT |
2347 | return check_condition_result; |
2348 | } | |
c65b1445 DG |
2349 | /* transfer length excessive (tie in to block limits VPD page) */ |
2350 | if (num > sdebug_store_sectors) { | |
22017ed2 | 2351 | /* needs work to find which cdb byte 'num' comes from */ |
cbf67842 | 2352 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
c65b1445 DG |
2353 | return check_condition_result; |
2354 | } | |
19789100 FT |
2355 | return 0; |
2356 | } | |
2357 | ||
a4517511 | 2358 | /* Returns number of bytes copied or -1 if error. */ |
c2248fc9 DG |
2359 | static int |
2360 | do_device_access(struct scsi_cmnd *scmd, u64 lba, u32 num, bool do_write) | |
19789100 FT |
2361 | { |
2362 | int ret; | |
c2248fc9 | 2363 | u64 block, rest = 0; |
a4517511 AM |
2364 | struct scsi_data_buffer *sdb; |
2365 | enum dma_data_direction dir; | |
2366 | size_t (*func)(struct scatterlist *, unsigned int, void *, size_t, | |
2367 | off_t); | |
2368 | ||
c2248fc9 | 2369 | if (do_write) { |
a4517511 AM |
2370 | sdb = scsi_out(scmd); |
2371 | dir = DMA_TO_DEVICE; | |
2372 | func = sg_pcopy_to_buffer; | |
2373 | } else { | |
2374 | sdb = scsi_in(scmd); | |
2375 | dir = DMA_FROM_DEVICE; | |
2376 | func = sg_pcopy_from_buffer; | |
2377 | } | |
19789100 | 2378 | |
a4517511 AM |
2379 | if (!sdb->length) |
2380 | return 0; | |
2381 | if (!(scsi_bidi_cmnd(scmd) || scmd->sc_data_direction == dir)) | |
2382 | return -1; | |
19789100 FT |
2383 | |
2384 | block = do_div(lba, sdebug_store_sectors); | |
2385 | if (block + num > sdebug_store_sectors) | |
2386 | rest = block + num - sdebug_store_sectors; | |
2387 | ||
a4517511 AM |
2388 | ret = func(sdb->table.sgl, sdb->table.nents, |
2389 | fake_storep + (block * scsi_debug_sector_size), | |
2390 | (num - rest) * scsi_debug_sector_size, 0); | |
2391 | if (ret != (num - rest) * scsi_debug_sector_size) | |
2392 | return ret; | |
2393 | ||
2394 | if (rest) { | |
2395 | ret += func(sdb->table.sgl, sdb->table.nents, | |
2396 | fake_storep, rest * scsi_debug_sector_size, | |
2397 | (num - rest) * scsi_debug_sector_size); | |
2398 | } | |
19789100 FT |
2399 | |
2400 | return ret; | |
2401 | } | |
2402 | ||
38d5c833 DG |
2403 | /* If fake_store(lba,num) compares equal to arr(num), then copy top half of |
2404 | * arr into fake_store(lba,num) and return true. If comparison fails then | |
2405 | * return false. */ | |
2406 | static bool | |
2407 | comp_write_worker(u64 lba, u32 num, const u8 *arr) | |
2408 | { | |
2409 | bool res; | |
2410 | u64 block, rest = 0; | |
2411 | u32 store_blks = sdebug_store_sectors; | |
2412 | u32 lb_size = scsi_debug_sector_size; | |
2413 | ||
2414 | block = do_div(lba, store_blks); | |
2415 | if (block + num > store_blks) | |
2416 | rest = block + num - store_blks; | |
2417 | ||
2418 | res = !memcmp(fake_storep + (block * lb_size), arr, | |
2419 | (num - rest) * lb_size); | |
2420 | if (!res) | |
2421 | return res; | |
2422 | if (rest) | |
2423 | res = memcmp(fake_storep, arr + ((num - rest) * lb_size), | |
2424 | rest * lb_size); | |
2425 | if (!res) | |
2426 | return res; | |
2427 | arr += num * lb_size; | |
2428 | memcpy(fake_storep + (block * lb_size), arr, (num - rest) * lb_size); | |
2429 | if (rest) | |
2430 | memcpy(fake_storep, arr + ((num - rest) * lb_size), | |
2431 | rest * lb_size); | |
2432 | return res; | |
2433 | } | |
2434 | ||
51d648af | 2435 | static __be16 dif_compute_csum(const void *buf, int len) |
beb40ea4 | 2436 | { |
51d648af | 2437 | __be16 csum; |
beb40ea4 | 2438 | |
51d648af AM |
2439 | if (scsi_debug_guard) |
2440 | csum = (__force __be16)ip_compute_csum(buf, len); | |
2441 | else | |
beb40ea4 | 2442 | csum = cpu_to_be16(crc_t10dif(buf, len)); |
51d648af | 2443 | |
beb40ea4 AM |
2444 | return csum; |
2445 | } | |
2446 | ||
2447 | static int dif_verify(struct sd_dif_tuple *sdt, const void *data, | |
2448 | sector_t sector, u32 ei_lba) | |
2449 | { | |
51d648af | 2450 | __be16 csum = dif_compute_csum(data, scsi_debug_sector_size); |
beb40ea4 AM |
2451 | |
2452 | if (sdt->guard_tag != csum) { | |
2453 | pr_err("%s: GUARD check failed on sector %lu rcvd 0x%04x, data 0x%04x\n", | |
2454 | __func__, | |
2455 | (unsigned long)sector, | |
2456 | be16_to_cpu(sdt->guard_tag), | |
2457 | be16_to_cpu(csum)); | |
2458 | return 0x01; | |
2459 | } | |
2460 | if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION && | |
2461 | be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) { | |
2462 | pr_err("%s: REF check failed on sector %lu\n", | |
2463 | __func__, (unsigned long)sector); | |
2464 | return 0x03; | |
2465 | } | |
2466 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
2467 | be32_to_cpu(sdt->ref_tag) != ei_lba) { | |
2468 | pr_err("%s: REF check failed on sector %lu\n", | |
2469 | __func__, (unsigned long)sector); | |
beb40ea4 AM |
2470 | return 0x03; |
2471 | } | |
2472 | return 0; | |
2473 | } | |
2474 | ||
bb8c063c | 2475 | static void dif_copy_prot(struct scsi_cmnd *SCpnt, sector_t sector, |
65f72f2a | 2476 | unsigned int sectors, bool read) |
c6a44287 | 2477 | { |
be4e11be | 2478 | size_t resid; |
c6a44287 | 2479 | void *paddr; |
14faa944 | 2480 | const void *dif_store_end = dif_storep + sdebug_store_sectors; |
be4e11be | 2481 | struct sg_mapping_iter miter; |
c6a44287 | 2482 | |
e18d8bea AM |
2483 | /* Bytes of protection data to copy into sgl */ |
2484 | resid = sectors * sizeof(*dif_storep); | |
c6a44287 | 2485 | |
be4e11be AM |
2486 | sg_miter_start(&miter, scsi_prot_sglist(SCpnt), |
2487 | scsi_prot_sg_count(SCpnt), SG_MITER_ATOMIC | | |
2488 | (read ? SG_MITER_TO_SG : SG_MITER_FROM_SG)); | |
2489 | ||
2490 | while (sg_miter_next(&miter) && resid > 0) { | |
2491 | size_t len = min(miter.length, resid); | |
14faa944 | 2492 | void *start = dif_store(sector); |
be4e11be | 2493 | size_t rest = 0; |
14faa944 AM |
2494 | |
2495 | if (dif_store_end < start + len) | |
2496 | rest = start + len - dif_store_end; | |
c6a44287 | 2497 | |
be4e11be | 2498 | paddr = miter.addr; |
14faa944 | 2499 | |
65f72f2a AM |
2500 | if (read) |
2501 | memcpy(paddr, start, len - rest); | |
2502 | else | |
2503 | memcpy(start, paddr, len - rest); | |
2504 | ||
2505 | if (rest) { | |
2506 | if (read) | |
2507 | memcpy(paddr + len - rest, dif_storep, rest); | |
2508 | else | |
2509 | memcpy(dif_storep, paddr + len - rest, rest); | |
2510 | } | |
c6a44287 | 2511 | |
e18d8bea | 2512 | sector += len / sizeof(*dif_storep); |
c6a44287 | 2513 | resid -= len; |
c6a44287 | 2514 | } |
be4e11be | 2515 | sg_miter_stop(&miter); |
bb8c063c AM |
2516 | } |
2517 | ||
2518 | static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, | |
2519 | unsigned int sectors, u32 ei_lba) | |
2520 | { | |
2521 | unsigned int i; | |
2522 | struct sd_dif_tuple *sdt; | |
2523 | sector_t sector; | |
2524 | ||
c45eabec | 2525 | for (i = 0; i < sectors; i++, ei_lba++) { |
bb8c063c AM |
2526 | int ret; |
2527 | ||
2528 | sector = start_sec + i; | |
2529 | sdt = dif_store(sector); | |
2530 | ||
51d648af | 2531 | if (sdt->app_tag == cpu_to_be16(0xffff)) |
bb8c063c AM |
2532 | continue; |
2533 | ||
2534 | ret = dif_verify(sdt, fake_store(sector), sector, ei_lba); | |
2535 | if (ret) { | |
2536 | dif_errors++; | |
2537 | return ret; | |
2538 | } | |
bb8c063c | 2539 | } |
c6a44287 | 2540 | |
65f72f2a | 2541 | dif_copy_prot(SCpnt, start_sec, sectors, true); |
c6a44287 MP |
2542 | dix_reads++; |
2543 | ||
2544 | return 0; | |
2545 | } | |
2546 | ||
c2248fc9 DG |
2547 | static int |
2548 | resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
19789100 | 2549 | { |
c2248fc9 DG |
2550 | u8 *cmd = scp->cmnd; |
2551 | u64 lba; | |
2552 | u32 num; | |
2553 | u32 ei_lba; | |
19789100 FT |
2554 | unsigned long iflags; |
2555 | int ret; | |
c2248fc9 | 2556 | bool check_prot; |
19789100 | 2557 | |
c2248fc9 DG |
2558 | switch (cmd[0]) { |
2559 | case READ_16: | |
2560 | ei_lba = 0; | |
2561 | lba = get_unaligned_be64(cmd + 2); | |
2562 | num = get_unaligned_be32(cmd + 10); | |
2563 | check_prot = true; | |
2564 | break; | |
2565 | case READ_10: | |
2566 | ei_lba = 0; | |
2567 | lba = get_unaligned_be32(cmd + 2); | |
2568 | num = get_unaligned_be16(cmd + 7); | |
2569 | check_prot = true; | |
2570 | break; | |
2571 | case READ_6: | |
2572 | ei_lba = 0; | |
2573 | lba = (u32)cmd[3] | (u32)cmd[2] << 8 | | |
2574 | (u32)(cmd[1] & 0x1f) << 16; | |
2575 | num = (0 == cmd[4]) ? 256 : cmd[4]; | |
2576 | check_prot = true; | |
2577 | break; | |
2578 | case READ_12: | |
2579 | ei_lba = 0; | |
2580 | lba = get_unaligned_be32(cmd + 2); | |
2581 | num = get_unaligned_be32(cmd + 6); | |
2582 | check_prot = true; | |
2583 | break; | |
2584 | case XDWRITEREAD_10: | |
2585 | ei_lba = 0; | |
2586 | lba = get_unaligned_be32(cmd + 2); | |
2587 | num = get_unaligned_be16(cmd + 7); | |
2588 | check_prot = false; | |
2589 | break; | |
2590 | default: /* assume READ(32) */ | |
2591 | lba = get_unaligned_be64(cmd + 12); | |
2592 | ei_lba = get_unaligned_be32(cmd + 20); | |
2593 | num = get_unaligned_be32(cmd + 28); | |
2594 | check_prot = false; | |
2595 | break; | |
2596 | } | |
2597 | if (check_prot) { | |
2598 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
2599 | (cmd[1] & 0xe0)) { | |
2600 | mk_sense_invalid_opcode(scp); | |
2601 | return check_condition_result; | |
2602 | } | |
2603 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || | |
2604 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && | |
2605 | (cmd[1] & 0xe0) == 0) | |
2606 | sdev_printk(KERN_ERR, scp->device, "Unprotected RD " | |
2607 | "to DIF device\n"); | |
2608 | } | |
2609 | if (sdebug_any_injecting_opt) { | |
2610 | struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp); | |
2611 | ||
2612 | if (ep->inj_short) | |
2613 | num /= 2; | |
2614 | } | |
2615 | ||
2616 | /* inline check_device_access_params() */ | |
2617 | if (lba + num > sdebug_capacity) { | |
2618 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
2619 | return check_condition_result; | |
2620 | } | |
2621 | /* transfer length excessive (tie in to block limits VPD page) */ | |
2622 | if (num > sdebug_store_sectors) { | |
2623 | /* needs work to find which cdb byte 'num' comes from */ | |
2624 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
2625 | return check_condition_result; | |
2626 | } | |
19789100 | 2627 | |
1da177e4 | 2628 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
32f7ef73 | 2629 | (lba <= (OPT_MEDIUM_ERR_ADDR + OPT_MEDIUM_ERR_NUM - 1)) && |
c65b1445 DG |
2630 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { |
2631 | /* claim unrecoverable read error */ | |
c2248fc9 | 2632 | mk_sense_buffer(scp, MEDIUM_ERROR, UNRECOVERED_READ_ERR, 0); |
c65b1445 | 2633 | /* set info field and valid bit for fixed descriptor */ |
c2248fc9 DG |
2634 | if (0x70 == (scp->sense_buffer[0] & 0x7f)) { |
2635 | scp->sense_buffer[0] |= 0x80; /* Valid bit */ | |
32f7ef73 DG |
2636 | ret = (lba < OPT_MEDIUM_ERR_ADDR) |
2637 | ? OPT_MEDIUM_ERR_ADDR : (int)lba; | |
c2248fc9 | 2638 | put_unaligned_be32(ret, scp->sense_buffer + 3); |
c65b1445 | 2639 | } |
c2248fc9 | 2640 | scsi_set_resid(scp, scsi_bufflen(scp)); |
1da177e4 LT |
2641 | return check_condition_result; |
2642 | } | |
c6a44287 | 2643 | |
6c78cc06 AM |
2644 | read_lock_irqsave(&atomic_rw, iflags); |
2645 | ||
c6a44287 | 2646 | /* DIX + T10 DIF */ |
c2248fc9 DG |
2647 | if (scsi_debug_dix && scsi_prot_sg_count(scp)) { |
2648 | int prot_ret = prot_verify_read(scp, lba, num, ei_lba); | |
c6a44287 MP |
2649 | |
2650 | if (prot_ret) { | |
6c78cc06 | 2651 | read_unlock_irqrestore(&atomic_rw, iflags); |
c2248fc9 | 2652 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, prot_ret); |
c6a44287 MP |
2653 | return illegal_condition_result; |
2654 | } | |
2655 | } | |
2656 | ||
c2248fc9 | 2657 | ret = do_device_access(scp, lba, num, false); |
1da177e4 | 2658 | read_unlock_irqrestore(&atomic_rw, iflags); |
a4517511 AM |
2659 | if (ret == -1) |
2660 | return DID_ERROR << 16; | |
2661 | ||
c2248fc9 | 2662 | scsi_in(scp)->resid = scsi_bufflen(scp) - ret; |
a4517511 | 2663 | |
c2248fc9 DG |
2664 | if (sdebug_any_injecting_opt) { |
2665 | struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp); | |
2666 | ||
2667 | if (ep->inj_recovered) { | |
2668 | mk_sense_buffer(scp, RECOVERED_ERROR, | |
2669 | THRESHOLD_EXCEEDED, 0); | |
2670 | return check_condition_result; | |
2671 | } else if (ep->inj_transport) { | |
2672 | mk_sense_buffer(scp, ABORTED_COMMAND, | |
2673 | TRANSPORT_PROBLEM, ACK_NAK_TO); | |
2674 | return check_condition_result; | |
2675 | } else if (ep->inj_dif) { | |
2676 | /* Logical block guard check failed */ | |
2677 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); | |
2678 | return illegal_condition_result; | |
2679 | } else if (ep->inj_dix) { | |
2680 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); | |
2681 | return illegal_condition_result; | |
2682 | } | |
2683 | } | |
a4517511 | 2684 | return 0; |
1da177e4 LT |
2685 | } |
2686 | ||
c6a44287 MP |
2687 | void dump_sector(unsigned char *buf, int len) |
2688 | { | |
cbf67842 | 2689 | int i, j, n; |
c6a44287 | 2690 | |
cbf67842 | 2691 | pr_err(">>> Sector Dump <<<\n"); |
c6a44287 | 2692 | for (i = 0 ; i < len ; i += 16) { |
cbf67842 | 2693 | char b[128]; |
c6a44287 | 2694 | |
cbf67842 | 2695 | for (j = 0, n = 0; j < 16; j++) { |
c6a44287 | 2696 | unsigned char c = buf[i+j]; |
cbf67842 | 2697 | |
c6a44287 | 2698 | if (c >= 0x20 && c < 0x7e) |
cbf67842 DG |
2699 | n += scnprintf(b + n, sizeof(b) - n, |
2700 | " %c ", buf[i+j]); | |
c6a44287 | 2701 | else |
cbf67842 DG |
2702 | n += scnprintf(b + n, sizeof(b) - n, |
2703 | "%02x ", buf[i+j]); | |
c6a44287 | 2704 | } |
cbf67842 | 2705 | pr_err("%04d: %s\n", i, b); |
c6a44287 MP |
2706 | } |
2707 | } | |
2708 | ||
2709 | static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, | |
395cef03 | 2710 | unsigned int sectors, u32 ei_lba) |
c6a44287 | 2711 | { |
be4e11be | 2712 | int ret; |
c6a44287 | 2713 | struct sd_dif_tuple *sdt; |
be4e11be | 2714 | void *daddr; |
65f72f2a | 2715 | sector_t sector = start_sec; |
c6a44287 | 2716 | int ppage_offset; |
be4e11be AM |
2717 | int dpage_offset; |
2718 | struct sg_mapping_iter diter; | |
2719 | struct sg_mapping_iter piter; | |
c6a44287 | 2720 | |
c6a44287 MP |
2721 | BUG_ON(scsi_sg_count(SCpnt) == 0); |
2722 | BUG_ON(scsi_prot_sg_count(SCpnt) == 0); | |
2723 | ||
be4e11be AM |
2724 | sg_miter_start(&piter, scsi_prot_sglist(SCpnt), |
2725 | scsi_prot_sg_count(SCpnt), | |
2726 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); | |
2727 | sg_miter_start(&diter, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), | |
2728 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); | |
2729 | ||
2730 | /* For each protection page */ | |
2731 | while (sg_miter_next(&piter)) { | |
2732 | dpage_offset = 0; | |
2733 | if (WARN_ON(!sg_miter_next(&diter))) { | |
2734 | ret = 0x01; | |
2735 | goto out; | |
2736 | } | |
c6a44287 | 2737 | |
be4e11be AM |
2738 | for (ppage_offset = 0; ppage_offset < piter.length; |
2739 | ppage_offset += sizeof(struct sd_dif_tuple)) { | |
c6a44287 | 2740 | /* If we're at the end of the current |
be4e11be | 2741 | * data page advance to the next one |
c6a44287 | 2742 | */ |
be4e11be AM |
2743 | if (dpage_offset >= diter.length) { |
2744 | if (WARN_ON(!sg_miter_next(&diter))) { | |
2745 | ret = 0x01; | |
2746 | goto out; | |
2747 | } | |
2748 | dpage_offset = 0; | |
c6a44287 MP |
2749 | } |
2750 | ||
be4e11be AM |
2751 | sdt = piter.addr + ppage_offset; |
2752 | daddr = diter.addr + dpage_offset; | |
c6a44287 | 2753 | |
be4e11be | 2754 | ret = dif_verify(sdt, daddr, sector, ei_lba); |
beb40ea4 | 2755 | if (ret) { |
be4e11be | 2756 | dump_sector(daddr, scsi_debug_sector_size); |
395cef03 MP |
2757 | goto out; |
2758 | } | |
2759 | ||
c6a44287 | 2760 | sector++; |
395cef03 | 2761 | ei_lba++; |
be4e11be | 2762 | dpage_offset += scsi_debug_sector_size; |
c6a44287 | 2763 | } |
be4e11be AM |
2764 | diter.consumed = dpage_offset; |
2765 | sg_miter_stop(&diter); | |
c6a44287 | 2766 | } |
be4e11be | 2767 | sg_miter_stop(&piter); |
c6a44287 | 2768 | |
65f72f2a | 2769 | dif_copy_prot(SCpnt, start_sec, sectors, false); |
c6a44287 MP |
2770 | dix_writes++; |
2771 | ||
2772 | return 0; | |
2773 | ||
2774 | out: | |
2775 | dif_errors++; | |
be4e11be AM |
2776 | sg_miter_stop(&diter); |
2777 | sg_miter_stop(&piter); | |
c6a44287 MP |
2778 | return ret; |
2779 | } | |
2780 | ||
b90ebc3d AM |
2781 | static unsigned long lba_to_map_index(sector_t lba) |
2782 | { | |
2783 | if (scsi_debug_unmap_alignment) { | |
2784 | lba += scsi_debug_unmap_granularity - | |
2785 | scsi_debug_unmap_alignment; | |
2786 | } | |
2787 | do_div(lba, scsi_debug_unmap_granularity); | |
2788 | ||
2789 | return lba; | |
2790 | } | |
2791 | ||
2792 | static sector_t map_index_to_lba(unsigned long index) | |
44d92694 | 2793 | { |
a027b5b9 AM |
2794 | sector_t lba = index * scsi_debug_unmap_granularity; |
2795 | ||
2796 | if (scsi_debug_unmap_alignment) { | |
2797 | lba -= scsi_debug_unmap_granularity - | |
2798 | scsi_debug_unmap_alignment; | |
2799 | } | |
2800 | ||
2801 | return lba; | |
b90ebc3d | 2802 | } |
44d92694 | 2803 | |
b90ebc3d AM |
2804 | static unsigned int map_state(sector_t lba, unsigned int *num) |
2805 | { | |
2806 | sector_t end; | |
2807 | unsigned int mapped; | |
2808 | unsigned long index; | |
2809 | unsigned long next; | |
44d92694 | 2810 | |
b90ebc3d AM |
2811 | index = lba_to_map_index(lba); |
2812 | mapped = test_bit(index, map_storep); | |
44d92694 MP |
2813 | |
2814 | if (mapped) | |
b90ebc3d | 2815 | next = find_next_zero_bit(map_storep, map_size, index); |
44d92694 | 2816 | else |
b90ebc3d | 2817 | next = find_next_bit(map_storep, map_size, index); |
44d92694 | 2818 | |
b90ebc3d | 2819 | end = min_t(sector_t, sdebug_store_sectors, map_index_to_lba(next)); |
44d92694 MP |
2820 | *num = end - lba; |
2821 | ||
2822 | return mapped; | |
2823 | } | |
2824 | ||
2825 | static void map_region(sector_t lba, unsigned int len) | |
2826 | { | |
44d92694 MP |
2827 | sector_t end = lba + len; |
2828 | ||
44d92694 | 2829 | while (lba < end) { |
b90ebc3d | 2830 | unsigned long index = lba_to_map_index(lba); |
44d92694 | 2831 | |
b90ebc3d AM |
2832 | if (index < map_size) |
2833 | set_bit(index, map_storep); | |
44d92694 | 2834 | |
b90ebc3d | 2835 | lba = map_index_to_lba(index + 1); |
44d92694 MP |
2836 | } |
2837 | } | |
2838 | ||
2839 | static void unmap_region(sector_t lba, unsigned int len) | |
2840 | { | |
44d92694 MP |
2841 | sector_t end = lba + len; |
2842 | ||
44d92694 | 2843 | while (lba < end) { |
b90ebc3d | 2844 | unsigned long index = lba_to_map_index(lba); |
44d92694 | 2845 | |
b90ebc3d AM |
2846 | if (lba == map_index_to_lba(index) && |
2847 | lba + scsi_debug_unmap_granularity <= end && | |
2848 | index < map_size) { | |
2849 | clear_bit(index, map_storep); | |
2850 | if (scsi_debug_lbprz) { | |
be1dd78d | 2851 | memset(fake_storep + |
cc34a8e6 AM |
2852 | lba * scsi_debug_sector_size, 0, |
2853 | scsi_debug_sector_size * | |
2854 | scsi_debug_unmap_granularity); | |
b90ebc3d | 2855 | } |
e9926b43 AM |
2856 | if (dif_storep) { |
2857 | memset(dif_storep + lba, 0xff, | |
2858 | sizeof(*dif_storep) * | |
2859 | scsi_debug_unmap_granularity); | |
2860 | } | |
be1dd78d | 2861 | } |
b90ebc3d | 2862 | lba = map_index_to_lba(index + 1); |
44d92694 MP |
2863 | } |
2864 | } | |
2865 | ||
c2248fc9 DG |
2866 | static int |
2867 | resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
1da177e4 | 2868 | { |
c2248fc9 DG |
2869 | u8 *cmd = scp->cmnd; |
2870 | u64 lba; | |
2871 | u32 num; | |
2872 | u32 ei_lba; | |
1da177e4 | 2873 | unsigned long iflags; |
19789100 | 2874 | int ret; |
c2248fc9 | 2875 | bool check_prot; |
1da177e4 | 2876 | |
c2248fc9 DG |
2877 | switch (cmd[0]) { |
2878 | case WRITE_16: | |
2879 | ei_lba = 0; | |
2880 | lba = get_unaligned_be64(cmd + 2); | |
2881 | num = get_unaligned_be32(cmd + 10); | |
2882 | check_prot = true; | |
2883 | break; | |
2884 | case WRITE_10: | |
2885 | ei_lba = 0; | |
2886 | lba = get_unaligned_be32(cmd + 2); | |
2887 | num = get_unaligned_be16(cmd + 7); | |
2888 | check_prot = true; | |
2889 | break; | |
2890 | case WRITE_6: | |
2891 | ei_lba = 0; | |
2892 | lba = (u32)cmd[3] | (u32)cmd[2] << 8 | | |
2893 | (u32)(cmd[1] & 0x1f) << 16; | |
2894 | num = (0 == cmd[4]) ? 256 : cmd[4]; | |
2895 | check_prot = true; | |
2896 | break; | |
2897 | case WRITE_12: | |
2898 | ei_lba = 0; | |
2899 | lba = get_unaligned_be32(cmd + 2); | |
2900 | num = get_unaligned_be32(cmd + 6); | |
2901 | check_prot = true; | |
2902 | break; | |
2903 | case 0x53: /* XDWRITEREAD(10) */ | |
2904 | ei_lba = 0; | |
2905 | lba = get_unaligned_be32(cmd + 2); | |
2906 | num = get_unaligned_be16(cmd + 7); | |
2907 | check_prot = false; | |
2908 | break; | |
2909 | default: /* assume WRITE(32) */ | |
2910 | lba = get_unaligned_be64(cmd + 12); | |
2911 | ei_lba = get_unaligned_be32(cmd + 20); | |
2912 | num = get_unaligned_be32(cmd + 28); | |
2913 | check_prot = false; | |
2914 | break; | |
2915 | } | |
2916 | if (check_prot) { | |
2917 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
2918 | (cmd[1] & 0xe0)) { | |
2919 | mk_sense_invalid_opcode(scp); | |
2920 | return check_condition_result; | |
2921 | } | |
2922 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || | |
2923 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && | |
2924 | (cmd[1] & 0xe0) == 0) | |
2925 | sdev_printk(KERN_ERR, scp->device, "Unprotected WR " | |
2926 | "to DIF device\n"); | |
2927 | } | |
2928 | ||
2929 | /* inline check_device_access_params() */ | |
2930 | if (lba + num > sdebug_capacity) { | |
2931 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
2932 | return check_condition_result; | |
2933 | } | |
2934 | /* transfer length excessive (tie in to block limits VPD page) */ | |
2935 | if (num > sdebug_store_sectors) { | |
2936 | /* needs work to find which cdb byte 'num' comes from */ | |
2937 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
2938 | return check_condition_result; | |
2939 | } | |
1da177e4 | 2940 | |
6c78cc06 AM |
2941 | write_lock_irqsave(&atomic_rw, iflags); |
2942 | ||
c6a44287 | 2943 | /* DIX + T10 DIF */ |
c2248fc9 DG |
2944 | if (scsi_debug_dix && scsi_prot_sg_count(scp)) { |
2945 | int prot_ret = prot_verify_write(scp, lba, num, ei_lba); | |
c6a44287 MP |
2946 | |
2947 | if (prot_ret) { | |
6c78cc06 | 2948 | write_unlock_irqrestore(&atomic_rw, iflags); |
c2248fc9 | 2949 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, prot_ret); |
c6a44287 MP |
2950 | return illegal_condition_result; |
2951 | } | |
2952 | } | |
2953 | ||
c2248fc9 | 2954 | ret = do_device_access(scp, lba, num, true); |
9ed8d3dc | 2955 | if (scsi_debug_lbp()) |
44d92694 | 2956 | map_region(lba, num); |
1da177e4 | 2957 | write_unlock_irqrestore(&atomic_rw, iflags); |
19789100 | 2958 | if (-1 == ret) |
1da177e4 | 2959 | return (DID_ERROR << 16); |
597136ab | 2960 | else if ((ret < (num * scsi_debug_sector_size)) && |
1da177e4 | 2961 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
c2248fc9 | 2962 | sdev_printk(KERN_INFO, scp->device, |
cbf67842 DG |
2963 | "%s: write: cdb indicated=%u, IO sent=%d bytes\n", |
2964 | my_name, num * scsi_debug_sector_size, ret); | |
44d92694 | 2965 | |
c2248fc9 DG |
2966 | if (sdebug_any_injecting_opt) { |
2967 | struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp); | |
2968 | ||
2969 | if (ep->inj_recovered) { | |
2970 | mk_sense_buffer(scp, RECOVERED_ERROR, | |
2971 | THRESHOLD_EXCEEDED, 0); | |
2972 | return check_condition_result; | |
2973 | } else if (ep->inj_dif) { | |
2974 | /* Logical block guard check failed */ | |
2975 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); | |
2976 | return illegal_condition_result; | |
2977 | } else if (ep->inj_dix) { | |
2978 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); | |
2979 | return illegal_condition_result; | |
2980 | } | |
2981 | } | |
44d92694 MP |
2982 | return 0; |
2983 | } | |
2984 | ||
c2248fc9 DG |
2985 | static int |
2986 | resp_write_same(struct scsi_cmnd *scp, u64 lba, u32 num, u32 ei_lba, | |
2987 | bool unmap, bool ndob) | |
44d92694 MP |
2988 | { |
2989 | unsigned long iflags; | |
2990 | unsigned long long i; | |
2991 | int ret; | |
2992 | ||
c2248fc9 | 2993 | ret = check_device_access_params(scp, lba, num); |
44d92694 MP |
2994 | if (ret) |
2995 | return ret; | |
2996 | ||
2997 | write_lock_irqsave(&atomic_rw, iflags); | |
2998 | ||
9ed8d3dc | 2999 | if (unmap && scsi_debug_lbp()) { |
44d92694 MP |
3000 | unmap_region(lba, num); |
3001 | goto out; | |
3002 | } | |
3003 | ||
c2248fc9 DG |
3004 | /* if ndob then zero 1 logical block, else fetch 1 logical block */ |
3005 | if (ndob) { | |
3006 | memset(fake_storep + (lba * scsi_debug_sector_size), 0, | |
3007 | scsi_debug_sector_size); | |
3008 | ret = 0; | |
3009 | } else | |
3010 | ret = fetch_to_dev_buffer(scp, fake_storep + | |
3011 | (lba * scsi_debug_sector_size), | |
3012 | scsi_debug_sector_size); | |
44d92694 MP |
3013 | |
3014 | if (-1 == ret) { | |
3015 | write_unlock_irqrestore(&atomic_rw, iflags); | |
3016 | return (DID_ERROR << 16); | |
3017 | } else if ((ret < (num * scsi_debug_sector_size)) && | |
3018 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
c2248fc9 | 3019 | sdev_printk(KERN_INFO, scp->device, |
cbf67842 DG |
3020 | "%s: %s: cdb indicated=%u, IO sent=%d bytes\n", |
3021 | my_name, "write same", | |
3022 | num * scsi_debug_sector_size, ret); | |
44d92694 MP |
3023 | |
3024 | /* Copy first sector to remaining blocks */ | |
3025 | for (i = 1 ; i < num ; i++) | |
3026 | memcpy(fake_storep + ((lba + i) * scsi_debug_sector_size), | |
3027 | fake_storep + (lba * scsi_debug_sector_size), | |
3028 | scsi_debug_sector_size); | |
3029 | ||
9ed8d3dc | 3030 | if (scsi_debug_lbp()) |
44d92694 MP |
3031 | map_region(lba, num); |
3032 | out: | |
3033 | write_unlock_irqrestore(&atomic_rw, iflags); | |
3034 | ||
1da177e4 LT |
3035 | return 0; |
3036 | } | |
3037 | ||
c2248fc9 DG |
3038 | static int |
3039 | resp_write_same_10(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
3040 | { | |
3041 | u8 *cmd = scp->cmnd; | |
3042 | u32 lba; | |
3043 | u16 num; | |
3044 | u32 ei_lba = 0; | |
3045 | bool unmap = false; | |
3046 | ||
3047 | if (cmd[1] & 0x8) { | |
3048 | if (scsi_debug_lbpws10 == 0) { | |
3049 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 3); | |
3050 | return check_condition_result; | |
3051 | } else | |
3052 | unmap = true; | |
3053 | } | |
3054 | lba = get_unaligned_be32(cmd + 2); | |
3055 | num = get_unaligned_be16(cmd + 7); | |
3056 | if (num > scsi_debug_write_same_length) { | |
3057 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 7, -1); | |
3058 | return check_condition_result; | |
3059 | } | |
3060 | return resp_write_same(scp, lba, num, ei_lba, unmap, false); | |
3061 | } | |
3062 | ||
3063 | static int | |
3064 | resp_write_same_16(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
3065 | { | |
3066 | u8 *cmd = scp->cmnd; | |
3067 | u64 lba; | |
3068 | u32 num; | |
3069 | u32 ei_lba = 0; | |
3070 | bool unmap = false; | |
3071 | bool ndob = false; | |
3072 | ||
3073 | if (cmd[1] & 0x8) { /* UNMAP */ | |
3074 | if (scsi_debug_lbpws == 0) { | |
3075 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 3); | |
3076 | return check_condition_result; | |
3077 | } else | |
3078 | unmap = true; | |
3079 | } | |
3080 | if (cmd[1] & 0x1) /* NDOB (no data-out buffer, assumes zeroes) */ | |
3081 | ndob = true; | |
3082 | lba = get_unaligned_be64(cmd + 2); | |
3083 | num = get_unaligned_be32(cmd + 10); | |
3084 | if (num > scsi_debug_write_same_length) { | |
3085 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 10, -1); | |
3086 | return check_condition_result; | |
3087 | } | |
3088 | return resp_write_same(scp, lba, num, ei_lba, unmap, ndob); | |
3089 | } | |
3090 | ||
acafd0b9 EM |
3091 | /* Note the mode field is in the same position as the (lower) service action |
3092 | * field. For the Report supported operation codes command, SPC-4 suggests | |
3093 | * each mode of this command should be reported separately; for future. */ | |
3094 | static int | |
3095 | resp_write_buffer(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
3096 | { | |
3097 | u8 *cmd = scp->cmnd; | |
3098 | struct scsi_device *sdp = scp->device; | |
3099 | struct sdebug_dev_info *dp; | |
3100 | u8 mode; | |
3101 | ||
3102 | mode = cmd[1] & 0x1f; | |
3103 | switch (mode) { | |
3104 | case 0x4: /* download microcode (MC) and activate (ACT) */ | |
3105 | /* set UAs on this device only */ | |
3106 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
3107 | set_bit(SDEBUG_UA_MICROCODE_CHANGED, devip->uas_bm); | |
3108 | break; | |
3109 | case 0x5: /* download MC, save and ACT */ | |
3110 | set_bit(SDEBUG_UA_MICROCODE_CHANGED_WO_RESET, devip->uas_bm); | |
3111 | break; | |
3112 | case 0x6: /* download MC with offsets and ACT */ | |
3113 | /* set UAs on most devices (LUs) in this target */ | |
3114 | list_for_each_entry(dp, | |
3115 | &devip->sdbg_host->dev_info_list, | |
3116 | dev_list) | |
3117 | if (dp->target == sdp->id) { | |
3118 | set_bit(SDEBUG_UA_BUS_RESET, dp->uas_bm); | |
3119 | if (devip != dp) | |
3120 | set_bit(SDEBUG_UA_MICROCODE_CHANGED, | |
3121 | dp->uas_bm); | |
3122 | } | |
3123 | break; | |
3124 | case 0x7: /* download MC with offsets, save, and ACT */ | |
3125 | /* set UA on all devices (LUs) in this target */ | |
3126 | list_for_each_entry(dp, | |
3127 | &devip->sdbg_host->dev_info_list, | |
3128 | dev_list) | |
3129 | if (dp->target == sdp->id) | |
3130 | set_bit(SDEBUG_UA_MICROCODE_CHANGED_WO_RESET, | |
3131 | dp->uas_bm); | |
3132 | break; | |
3133 | default: | |
3134 | /* do nothing for this command for other mode values */ | |
3135 | break; | |
3136 | } | |
3137 | return 0; | |
3138 | } | |
3139 | ||
38d5c833 DG |
3140 | static int |
3141 | resp_comp_write(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
3142 | { | |
3143 | u8 *cmd = scp->cmnd; | |
3144 | u8 *arr; | |
3145 | u8 *fake_storep_hold; | |
3146 | u64 lba; | |
3147 | u32 dnum; | |
3148 | u32 lb_size = scsi_debug_sector_size; | |
3149 | u8 num; | |
3150 | unsigned long iflags; | |
3151 | int ret; | |
d467d31f | 3152 | int retval = 0; |
38d5c833 | 3153 | |
d467d31f | 3154 | lba = get_unaligned_be64(cmd + 2); |
38d5c833 DG |
3155 | num = cmd[13]; /* 1 to a maximum of 255 logical blocks */ |
3156 | if (0 == num) | |
3157 | return 0; /* degenerate case, not an error */ | |
38d5c833 DG |
3158 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && |
3159 | (cmd[1] & 0xe0)) { | |
3160 | mk_sense_invalid_opcode(scp); | |
3161 | return check_condition_result; | |
3162 | } | |
3163 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || | |
3164 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && | |
3165 | (cmd[1] & 0xe0) == 0) | |
3166 | sdev_printk(KERN_ERR, scp->device, "Unprotected WR " | |
3167 | "to DIF device\n"); | |
3168 | ||
3169 | /* inline check_device_access_params() */ | |
3170 | if (lba + num > sdebug_capacity) { | |
3171 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); | |
3172 | return check_condition_result; | |
3173 | } | |
3174 | /* transfer length excessive (tie in to block limits VPD page) */ | |
3175 | if (num > sdebug_store_sectors) { | |
3176 | /* needs work to find which cdb byte 'num' comes from */ | |
3177 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); | |
3178 | return check_condition_result; | |
3179 | } | |
d467d31f DG |
3180 | dnum = 2 * num; |
3181 | arr = kzalloc(dnum * lb_size, GFP_ATOMIC); | |
3182 | if (NULL == arr) { | |
3183 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
3184 | INSUFF_RES_ASCQ); | |
3185 | return check_condition_result; | |
3186 | } | |
38d5c833 DG |
3187 | |
3188 | write_lock_irqsave(&atomic_rw, iflags); | |
3189 | ||
3190 | /* trick do_device_access() to fetch both compare and write buffers | |
3191 | * from data-in into arr. Safe (atomic) since write_lock held. */ | |
3192 | fake_storep_hold = fake_storep; | |
3193 | fake_storep = arr; | |
3194 | ret = do_device_access(scp, 0, dnum, true); | |
3195 | fake_storep = fake_storep_hold; | |
3196 | if (ret == -1) { | |
d467d31f DG |
3197 | retval = DID_ERROR << 16; |
3198 | goto cleanup; | |
38d5c833 DG |
3199 | } else if ((ret < (dnum * lb_size)) && |
3200 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
3201 | sdev_printk(KERN_INFO, scp->device, "%s: compare_write: cdb " | |
3202 | "indicated=%u, IO sent=%d bytes\n", my_name, | |
3203 | dnum * lb_size, ret); | |
3204 | if (!comp_write_worker(lba, num, arr)) { | |
38d5c833 | 3205 | mk_sense_buffer(scp, MISCOMPARE, MISCOMPARE_VERIFY_ASC, 0); |
d467d31f DG |
3206 | retval = check_condition_result; |
3207 | goto cleanup; | |
38d5c833 DG |
3208 | } |
3209 | if (scsi_debug_lbp()) | |
3210 | map_region(lba, num); | |
d467d31f | 3211 | cleanup: |
38d5c833 | 3212 | write_unlock_irqrestore(&atomic_rw, iflags); |
d467d31f DG |
3213 | kfree(arr); |
3214 | return retval; | |
38d5c833 DG |
3215 | } |
3216 | ||
44d92694 MP |
3217 | struct unmap_block_desc { |
3218 | __be64 lba; | |
3219 | __be32 blocks; | |
3220 | __be32 __reserved; | |
3221 | }; | |
3222 | ||
c2248fc9 DG |
3223 | static int |
3224 | resp_unmap(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
44d92694 MP |
3225 | { |
3226 | unsigned char *buf; | |
3227 | struct unmap_block_desc *desc; | |
3228 | unsigned int i, payload_len, descriptors; | |
3229 | int ret; | |
6c78cc06 | 3230 | unsigned long iflags; |
44d92694 | 3231 | |
44d92694 | 3232 | |
c2248fc9 DG |
3233 | if (!scsi_debug_lbp()) |
3234 | return 0; /* fib and say its done */ | |
3235 | payload_len = get_unaligned_be16(scp->cmnd + 7); | |
3236 | BUG_ON(scsi_bufflen(scp) != payload_len); | |
44d92694 MP |
3237 | |
3238 | descriptors = (payload_len - 8) / 16; | |
c2248fc9 DG |
3239 | if (descriptors > scsi_debug_unmap_max_desc) { |
3240 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 7, -1); | |
3241 | return check_condition_result; | |
3242 | } | |
44d92694 | 3243 | |
c2248fc9 DG |
3244 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); |
3245 | if (!buf) { | |
3246 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
3247 | INSUFF_RES_ASCQ); | |
44d92694 | 3248 | return check_condition_result; |
c2248fc9 | 3249 | } |
44d92694 | 3250 | |
c2248fc9 | 3251 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
44d92694 MP |
3252 | |
3253 | BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2); | |
3254 | BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16); | |
3255 | ||
3256 | desc = (void *)&buf[8]; | |
3257 | ||
6c78cc06 AM |
3258 | write_lock_irqsave(&atomic_rw, iflags); |
3259 | ||
44d92694 MP |
3260 | for (i = 0 ; i < descriptors ; i++) { |
3261 | unsigned long long lba = get_unaligned_be64(&desc[i].lba); | |
3262 | unsigned int num = get_unaligned_be32(&desc[i].blocks); | |
3263 | ||
c2248fc9 | 3264 | ret = check_device_access_params(scp, lba, num); |
44d92694 MP |
3265 | if (ret) |
3266 | goto out; | |
3267 | ||
3268 | unmap_region(lba, num); | |
3269 | } | |
3270 | ||
3271 | ret = 0; | |
3272 | ||
3273 | out: | |
6c78cc06 | 3274 | write_unlock_irqrestore(&atomic_rw, iflags); |
44d92694 MP |
3275 | kfree(buf); |
3276 | ||
3277 | return ret; | |
3278 | } | |
3279 | ||
3280 | #define SDEBUG_GET_LBA_STATUS_LEN 32 | |
3281 | ||
c2248fc9 DG |
3282 | static int |
3283 | resp_get_lba_status(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
44d92694 | 3284 | { |
c2248fc9 DG |
3285 | u8 *cmd = scp->cmnd; |
3286 | u64 lba; | |
3287 | u32 alloc_len, mapped, num; | |
3288 | u8 arr[SDEBUG_GET_LBA_STATUS_LEN]; | |
44d92694 MP |
3289 | int ret; |
3290 | ||
c2248fc9 DG |
3291 | lba = get_unaligned_be64(cmd + 2); |
3292 | alloc_len = get_unaligned_be32(cmd + 10); | |
44d92694 MP |
3293 | |
3294 | if (alloc_len < 24) | |
3295 | return 0; | |
3296 | ||
c2248fc9 | 3297 | ret = check_device_access_params(scp, lba, 1); |
44d92694 MP |
3298 | if (ret) |
3299 | return ret; | |
3300 | ||
c2248fc9 DG |
3301 | if (scsi_debug_lbp()) |
3302 | mapped = map_state(lba, &num); | |
3303 | else { | |
3304 | mapped = 1; | |
3305 | /* following just in case virtual_gb changed */ | |
3306 | sdebug_capacity = get_sdebug_capacity(); | |
3307 | if (sdebug_capacity - lba <= 0xffffffff) | |
3308 | num = sdebug_capacity - lba; | |
3309 | else | |
3310 | num = 0xffffffff; | |
3311 | } | |
44d92694 MP |
3312 | |
3313 | memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN); | |
c2248fc9 DG |
3314 | put_unaligned_be32(20, arr); /* Parameter Data Length */ |
3315 | put_unaligned_be64(lba, arr + 8); /* LBA */ | |
3316 | put_unaligned_be32(num, arr + 16); /* Number of blocks */ | |
3317 | arr[20] = !mapped; /* prov_stat=0: mapped; 1: dealloc */ | |
44d92694 | 3318 | |
c2248fc9 | 3319 | return fill_from_dev_buffer(scp, arr, SDEBUG_GET_LBA_STATUS_LEN); |
44d92694 MP |
3320 | } |
3321 | ||
c65b1445 | 3322 | #define SDEBUG_RLUN_ARR_SZ 256 |
1da177e4 LT |
3323 | |
3324 | static int resp_report_luns(struct scsi_cmnd * scp, | |
3325 | struct sdebug_dev_info * devip) | |
3326 | { | |
3327 | unsigned int alloc_len; | |
22017ed2 DG |
3328 | int lun_cnt, i, upper, num, n, want_wlun, shortish; |
3329 | u64 lun; | |
01123ef4 | 3330 | unsigned char *cmd = scp->cmnd; |
1da177e4 LT |
3331 | int select_report = (int)cmd[2]; |
3332 | struct scsi_lun *one_lun; | |
3333 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; | |
c65b1445 | 3334 | unsigned char * max_addr; |
1da177e4 | 3335 | |
19c8ead7 | 3336 | clear_luns_changed_on_target(devip); |
1da177e4 | 3337 | alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); |
22017ed2 DG |
3338 | shortish = (alloc_len < 4); |
3339 | if (shortish || (select_report > 2)) { | |
3340 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, shortish ? 6 : 2, -1); | |
1da177e4 LT |
3341 | return check_condition_result; |
3342 | } | |
3343 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ | |
3344 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); | |
3345 | lun_cnt = scsi_debug_max_luns; | |
c65b1445 DG |
3346 | if (1 == select_report) |
3347 | lun_cnt = 0; | |
3348 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) | |
3349 | --lun_cnt; | |
22017ed2 DG |
3350 | want_wlun = (select_report > 0) ? 1 : 0; |
3351 | num = lun_cnt + want_wlun; | |
c65b1445 DG |
3352 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; |
3353 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; | |
3354 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / | |
3355 | sizeof(struct scsi_lun)), num); | |
3356 | if (n < num) { | |
22017ed2 | 3357 | want_wlun = 0; |
c65b1445 DG |
3358 | lun_cnt = n; |
3359 | } | |
1da177e4 | 3360 | one_lun = (struct scsi_lun *) &arr[8]; |
c65b1445 DG |
3361 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
3362 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); | |
3363 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); | |
3364 | i++, lun++) { | |
3365 | upper = (lun >> 8) & 0x3f; | |
1da177e4 LT |
3366 | if (upper) |
3367 | one_lun[i].scsi_lun[0] = | |
3368 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); | |
c65b1445 DG |
3369 | one_lun[i].scsi_lun[1] = lun & 0xff; |
3370 | } | |
22017ed2 | 3371 | if (want_wlun) { |
c65b1445 DG |
3372 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; |
3373 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; | |
3374 | i++; | |
1da177e4 | 3375 | } |
c65b1445 | 3376 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
1da177e4 LT |
3377 | return fill_from_dev_buffer(scp, arr, |
3378 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); | |
3379 | } | |
3380 | ||
c639d14e FT |
3381 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
3382 | unsigned int num, struct sdebug_dev_info *devip) | |
3383 | { | |
be4e11be | 3384 | int j; |
c639d14e FT |
3385 | unsigned char *kaddr, *buf; |
3386 | unsigned int offset; | |
c639d14e | 3387 | struct scsi_data_buffer *sdb = scsi_in(scp); |
be4e11be | 3388 | struct sg_mapping_iter miter; |
c639d14e FT |
3389 | |
3390 | /* better not to use temporary buffer. */ | |
3391 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); | |
c5af0db9 | 3392 | if (!buf) { |
22017ed2 DG |
3393 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, |
3394 | INSUFF_RES_ASCQ); | |
c5af0db9 AM |
3395 | return check_condition_result; |
3396 | } | |
c639d14e | 3397 | |
21a61829 | 3398 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
c639d14e FT |
3399 | |
3400 | offset = 0; | |
be4e11be AM |
3401 | sg_miter_start(&miter, sdb->table.sgl, sdb->table.nents, |
3402 | SG_MITER_ATOMIC | SG_MITER_TO_SG); | |
c639d14e | 3403 | |
be4e11be AM |
3404 | while (sg_miter_next(&miter)) { |
3405 | kaddr = miter.addr; | |
3406 | for (j = 0; j < miter.length; j++) | |
3407 | *(kaddr + j) ^= *(buf + offset + j); | |
c639d14e | 3408 | |
be4e11be | 3409 | offset += miter.length; |
c639d14e | 3410 | } |
be4e11be | 3411 | sg_miter_stop(&miter); |
c639d14e FT |
3412 | kfree(buf); |
3413 | ||
be4e11be | 3414 | return 0; |
c639d14e FT |
3415 | } |
3416 | ||
c2248fc9 DG |
3417 | static int |
3418 | resp_xdwriteread_10(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) | |
3419 | { | |
3420 | u8 *cmd = scp->cmnd; | |
3421 | u64 lba; | |
3422 | u32 num; | |
3423 | int errsts; | |
3424 | ||
3425 | if (!scsi_bidi_cmnd(scp)) { | |
3426 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, | |
3427 | INSUFF_RES_ASCQ); | |
3428 | return check_condition_result; | |
3429 | } | |
3430 | errsts = resp_read_dt0(scp, devip); | |
3431 | if (errsts) | |
3432 | return errsts; | |
3433 | if (!(cmd[1] & 0x4)) { /* DISABLE_WRITE is not set */ | |
3434 | errsts = resp_write_dt0(scp, devip); | |
3435 | if (errsts) | |
3436 | return errsts; | |
3437 | } | |
3438 | lba = get_unaligned_be32(cmd + 2); | |
3439 | num = get_unaligned_be16(cmd + 7); | |
3440 | return resp_xdwriteread(scp, lba, num, devip); | |
3441 | } | |
3442 | ||
cbf67842 DG |
3443 | /* When timer or tasklet goes off this function is called. */ |
3444 | static void sdebug_q_cmd_complete(unsigned long indx) | |
1da177e4 | 3445 | { |
cbf67842 DG |
3446 | int qa_indx; |
3447 | int retiring = 0; | |
1da177e4 | 3448 | unsigned long iflags; |
cbf67842 DG |
3449 | struct sdebug_queued_cmd *sqcp; |
3450 | struct scsi_cmnd *scp; | |
3451 | struct sdebug_dev_info *devip; | |
1da177e4 | 3452 | |
cbf67842 DG |
3453 | atomic_inc(&sdebug_completions); |
3454 | qa_indx = indx; | |
3455 | if ((qa_indx < 0) || (qa_indx >= SCSI_DEBUG_CANQUEUE)) { | |
3456 | pr_err("%s: wild qa_indx=%d\n", __func__, qa_indx); | |
1da177e4 LT |
3457 | return; |
3458 | } | |
3459 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
cbf67842 DG |
3460 | sqcp = &queued_arr[qa_indx]; |
3461 | scp = sqcp->a_cmnd; | |
3462 | if (NULL == scp) { | |
3463 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3464 | pr_err("%s: scp is NULL\n", __func__); | |
3465 | return; | |
3466 | } | |
3467 | devip = (struct sdebug_dev_info *)scp->device->hostdata; | |
3468 | if (devip) | |
3469 | atomic_dec(&devip->num_in_q); | |
3470 | else | |
3471 | pr_err("%s: devip=NULL\n", __func__); | |
3472 | if (atomic_read(&retired_max_queue) > 0) | |
3473 | retiring = 1; | |
3474 | ||
3475 | sqcp->a_cmnd = NULL; | |
3476 | if (!test_and_clear_bit(qa_indx, queued_in_use_bm)) { | |
1da177e4 | 3477 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
cbf67842 | 3478 | pr_err("%s: Unexpected completion\n", __func__); |
1da177e4 LT |
3479 | return; |
3480 | } | |
cbf67842 DG |
3481 | |
3482 | if (unlikely(retiring)) { /* user has reduced max_queue */ | |
3483 | int k, retval; | |
3484 | ||
3485 | retval = atomic_read(&retired_max_queue); | |
3486 | if (qa_indx >= retval) { | |
3487 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3488 | pr_err("%s: index %d too large\n", __func__, retval); | |
3489 | return; | |
3490 | } | |
3491 | k = find_last_bit(queued_in_use_bm, retval); | |
3492 | if ((k < scsi_debug_max_queue) || (k == retval)) | |
3493 | atomic_set(&retired_max_queue, 0); | |
3494 | else | |
3495 | atomic_set(&retired_max_queue, k + 1); | |
1da177e4 | 3496 | } |
1da177e4 | 3497 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
cbf67842 | 3498 | scp->scsi_done(scp); /* callback to mid level */ |
1da177e4 LT |
3499 | } |
3500 | ||
cbf67842 DG |
3501 | /* When high resolution timer goes off this function is called. */ |
3502 | static enum hrtimer_restart | |
3503 | sdebug_q_cmd_hrt_complete(struct hrtimer *timer) | |
3504 | { | |
3505 | int qa_indx; | |
3506 | int retiring = 0; | |
3507 | unsigned long iflags; | |
3508 | struct sdebug_hrtimer *sd_hrtp = (struct sdebug_hrtimer *)timer; | |
3509 | struct sdebug_queued_cmd *sqcp; | |
3510 | struct scsi_cmnd *scp; | |
3511 | struct sdebug_dev_info *devip; | |
3512 | ||
3513 | atomic_inc(&sdebug_completions); | |
3514 | qa_indx = sd_hrtp->qa_indx; | |
3515 | if ((qa_indx < 0) || (qa_indx >= SCSI_DEBUG_CANQUEUE)) { | |
3516 | pr_err("%s: wild qa_indx=%d\n", __func__, qa_indx); | |
3517 | goto the_end; | |
3518 | } | |
3519 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
3520 | sqcp = &queued_arr[qa_indx]; | |
3521 | scp = sqcp->a_cmnd; | |
3522 | if (NULL == scp) { | |
3523 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3524 | pr_err("%s: scp is NULL\n", __func__); | |
3525 | goto the_end; | |
3526 | } | |
3527 | devip = (struct sdebug_dev_info *)scp->device->hostdata; | |
3528 | if (devip) | |
3529 | atomic_dec(&devip->num_in_q); | |
3530 | else | |
3531 | pr_err("%s: devip=NULL\n", __func__); | |
3532 | if (atomic_read(&retired_max_queue) > 0) | |
3533 | retiring = 1; | |
3534 | ||
3535 | sqcp->a_cmnd = NULL; | |
3536 | if (!test_and_clear_bit(qa_indx, queued_in_use_bm)) { | |
3537 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3538 | pr_err("%s: Unexpected completion\n", __func__); | |
3539 | goto the_end; | |
3540 | } | |
3541 | ||
3542 | if (unlikely(retiring)) { /* user has reduced max_queue */ | |
3543 | int k, retval; | |
3544 | ||
3545 | retval = atomic_read(&retired_max_queue); | |
3546 | if (qa_indx >= retval) { | |
3547 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3548 | pr_err("%s: index %d too large\n", __func__, retval); | |
3549 | goto the_end; | |
3550 | } | |
3551 | k = find_last_bit(queued_in_use_bm, retval); | |
3552 | if ((k < scsi_debug_max_queue) || (k == retval)) | |
3553 | atomic_set(&retired_max_queue, 0); | |
3554 | else | |
3555 | atomic_set(&retired_max_queue, k + 1); | |
3556 | } | |
3557 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3558 | scp->scsi_done(scp); /* callback to mid level */ | |
3559 | the_end: | |
3560 | return HRTIMER_NORESTART; | |
3561 | } | |
1da177e4 | 3562 | |
8dea0d02 FT |
3563 | static struct sdebug_dev_info * |
3564 | sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags) | |
5cb2fc06 FT |
3565 | { |
3566 | struct sdebug_dev_info *devip; | |
3567 | ||
3568 | devip = kzalloc(sizeof(*devip), flags); | |
3569 | if (devip) { | |
3570 | devip->sdbg_host = sdbg_host; | |
3571 | list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); | |
3572 | } | |
3573 | return devip; | |
3574 | } | |
3575 | ||
1da177e4 LT |
3576 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
3577 | { | |
3578 | struct sdebug_host_info * sdbg_host; | |
3579 | struct sdebug_dev_info * open_devip = NULL; | |
3580 | struct sdebug_dev_info * devip = | |
3581 | (struct sdebug_dev_info *)sdev->hostdata; | |
3582 | ||
3583 | if (devip) | |
3584 | return devip; | |
d1e4c9c5 FT |
3585 | sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
3586 | if (!sdbg_host) { | |
cbf67842 | 3587 | pr_err("%s: Host info NULL\n", __func__); |
1da177e4 LT |
3588 | return NULL; |
3589 | } | |
3590 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { | |
3591 | if ((devip->used) && (devip->channel == sdev->channel) && | |
3592 | (devip->target == sdev->id) && | |
3593 | (devip->lun == sdev->lun)) | |
3594 | return devip; | |
3595 | else { | |
3596 | if ((!devip->used) && (!open_devip)) | |
3597 | open_devip = devip; | |
3598 | } | |
3599 | } | |
5cb2fc06 FT |
3600 | if (!open_devip) { /* try and make a new one */ |
3601 | open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); | |
3602 | if (!open_devip) { | |
1da177e4 | 3603 | printk(KERN_ERR "%s: out of memory at line %d\n", |
cadbd4a5 | 3604 | __func__, __LINE__); |
1da177e4 LT |
3605 | return NULL; |
3606 | } | |
1da177e4 | 3607 | } |
a75869d1 FT |
3608 | |
3609 | open_devip->channel = sdev->channel; | |
3610 | open_devip->target = sdev->id; | |
3611 | open_devip->lun = sdev->lun; | |
3612 | open_devip->sdbg_host = sdbg_host; | |
cbf67842 DG |
3613 | atomic_set(&open_devip->num_in_q, 0); |
3614 | set_bit(SDEBUG_UA_POR, open_devip->uas_bm); | |
c2248fc9 | 3615 | open_devip->used = true; |
a75869d1 | 3616 | return open_devip; |
1da177e4 LT |
3617 | } |
3618 | ||
8dea0d02 | 3619 | static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
1da177e4 | 3620 | { |
8dea0d02 | 3621 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
9cb78c16 | 3622 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %llu>\n", |
8dea0d02 | 3623 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
75ad23bc | 3624 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); |
8dea0d02 FT |
3625 | return 0; |
3626 | } | |
1da177e4 | 3627 | |
8dea0d02 FT |
3628 | static int scsi_debug_slave_configure(struct scsi_device *sdp) |
3629 | { | |
3630 | struct sdebug_dev_info *devip; | |
a34c4e98 | 3631 | |
8dea0d02 | 3632 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
9cb78c16 | 3633 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %llu>\n", |
8dea0d02 FT |
3634 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
3635 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) | |
3636 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; | |
3637 | devip = devInfoReg(sdp); | |
3638 | if (NULL == devip) | |
3639 | return 1; /* no resources, will be marked offline */ | |
c8b09f6f | 3640 | sdp->hostdata = devip; |
6bb5e6e7 | 3641 | blk_queue_max_segment_size(sdp->request_queue, -1U); |
78d4e5a0 DG |
3642 | if (scsi_debug_no_uld) |
3643 | sdp->no_uld_attach = 1; | |
8dea0d02 FT |
3644 | return 0; |
3645 | } | |
3646 | ||
3647 | static void scsi_debug_slave_destroy(struct scsi_device *sdp) | |
3648 | { | |
3649 | struct sdebug_dev_info *devip = | |
3650 | (struct sdebug_dev_info *)sdp->hostdata; | |
a34c4e98 | 3651 | |
1da177e4 | 3652 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
9cb78c16 | 3653 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %llu>\n", |
8dea0d02 FT |
3654 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
3655 | if (devip) { | |
25985edc | 3656 | /* make this slot available for re-use */ |
c2248fc9 | 3657 | devip->used = false; |
8dea0d02 FT |
3658 | sdp->hostdata = NULL; |
3659 | } | |
3660 | } | |
3661 | ||
cbf67842 | 3662 | /* Returns 1 if cmnd found (deletes its timer or tasklet), else returns 0 */ |
8dea0d02 FT |
3663 | static int stop_queued_cmnd(struct scsi_cmnd *cmnd) |
3664 | { | |
3665 | unsigned long iflags; | |
cbf67842 | 3666 | int k, qmax, r_qmax; |
8dea0d02 | 3667 | struct sdebug_queued_cmd *sqcp; |
cbf67842 | 3668 | struct sdebug_dev_info *devip; |
8dea0d02 FT |
3669 | |
3670 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
cbf67842 DG |
3671 | qmax = scsi_debug_max_queue; |
3672 | r_qmax = atomic_read(&retired_max_queue); | |
3673 | if (r_qmax > qmax) | |
3674 | qmax = r_qmax; | |
3675 | for (k = 0; k < qmax; ++k) { | |
3676 | if (test_bit(k, queued_in_use_bm)) { | |
3677 | sqcp = &queued_arr[k]; | |
3678 | if (cmnd == sqcp->a_cmnd) { | |
db525fce DG |
3679 | devip = (struct sdebug_dev_info *) |
3680 | cmnd->device->hostdata; | |
3681 | if (devip) | |
3682 | atomic_dec(&devip->num_in_q); | |
3683 | sqcp->a_cmnd = NULL; | |
3684 | spin_unlock_irqrestore(&queued_arr_lock, | |
3685 | iflags); | |
cbf67842 DG |
3686 | if (scsi_debug_ndelay > 0) { |
3687 | if (sqcp->sd_hrtp) | |
3688 | hrtimer_cancel( | |
3689 | &sqcp->sd_hrtp->hrt); | |
3690 | } else if (scsi_debug_delay > 0) { | |
3691 | if (sqcp->cmnd_timerp) | |
3692 | del_timer_sync( | |
3693 | sqcp->cmnd_timerp); | |
3694 | } else if (scsi_debug_delay < 0) { | |
3695 | if (sqcp->tletp) | |
3696 | tasklet_kill(sqcp->tletp); | |
3697 | } | |
db525fce DG |
3698 | clear_bit(k, queued_in_use_bm); |
3699 | return 1; | |
cbf67842 | 3700 | } |
8dea0d02 FT |
3701 | } |
3702 | } | |
3703 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
db525fce | 3704 | return 0; |
8dea0d02 FT |
3705 | } |
3706 | ||
cbf67842 | 3707 | /* Deletes (stops) timers or tasklets of all queued commands */ |
8dea0d02 FT |
3708 | static void stop_all_queued(void) |
3709 | { | |
3710 | unsigned long iflags; | |
3711 | int k; | |
3712 | struct sdebug_queued_cmd *sqcp; | |
cbf67842 | 3713 | struct sdebug_dev_info *devip; |
8dea0d02 FT |
3714 | |
3715 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
cbf67842 DG |
3716 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
3717 | if (test_bit(k, queued_in_use_bm)) { | |
3718 | sqcp = &queued_arr[k]; | |
3719 | if (sqcp->a_cmnd) { | |
db525fce DG |
3720 | devip = (struct sdebug_dev_info *) |
3721 | sqcp->a_cmnd->device->hostdata; | |
3722 | if (devip) | |
3723 | atomic_dec(&devip->num_in_q); | |
3724 | sqcp->a_cmnd = NULL; | |
3725 | spin_unlock_irqrestore(&queued_arr_lock, | |
3726 | iflags); | |
cbf67842 DG |
3727 | if (scsi_debug_ndelay > 0) { |
3728 | if (sqcp->sd_hrtp) | |
3729 | hrtimer_cancel( | |
3730 | &sqcp->sd_hrtp->hrt); | |
3731 | } else if (scsi_debug_delay > 0) { | |
3732 | if (sqcp->cmnd_timerp) | |
3733 | del_timer_sync( | |
3734 | sqcp->cmnd_timerp); | |
3735 | } else if (scsi_debug_delay < 0) { | |
3736 | if (sqcp->tletp) | |
3737 | tasklet_kill(sqcp->tletp); | |
3738 | } | |
db525fce DG |
3739 | clear_bit(k, queued_in_use_bm); |
3740 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
cbf67842 | 3741 | } |
8dea0d02 FT |
3742 | } |
3743 | } | |
3744 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1da177e4 LT |
3745 | } |
3746 | ||
cbf67842 DG |
3747 | /* Free queued command memory on heap */ |
3748 | static void free_all_queued(void) | |
1da177e4 | 3749 | { |
cbf67842 DG |
3750 | unsigned long iflags; |
3751 | int k; | |
3752 | struct sdebug_queued_cmd *sqcp; | |
3753 | ||
3754 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
3755 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
3756 | sqcp = &queued_arr[k]; | |
3757 | kfree(sqcp->cmnd_timerp); | |
3758 | sqcp->cmnd_timerp = NULL; | |
3759 | kfree(sqcp->tletp); | |
3760 | sqcp->tletp = NULL; | |
3761 | kfree(sqcp->sd_hrtp); | |
3762 | sqcp->sd_hrtp = NULL; | |
3763 | } | |
3764 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1da177e4 LT |
3765 | } |
3766 | ||
cbf67842 | 3767 | static int scsi_debug_abort(struct scsi_cmnd *SCpnt) |
1da177e4 | 3768 | { |
cbf67842 DG |
3769 | ++num_aborts; |
3770 | if (SCpnt) { | |
3771 | if (SCpnt->device && | |
3772 | (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts)) | |
3773 | sdev_printk(KERN_INFO, SCpnt->device, "%s\n", | |
3774 | __func__); | |
3775 | stop_queued_cmnd(SCpnt); | |
3776 | } | |
3777 | return SUCCESS; | |
1da177e4 LT |
3778 | } |
3779 | ||
3780 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) | |
3781 | { | |
3782 | struct sdebug_dev_info * devip; | |
3783 | ||
1da177e4 | 3784 | ++num_dev_resets; |
cbf67842 DG |
3785 | if (SCpnt && SCpnt->device) { |
3786 | struct scsi_device *sdp = SCpnt->device; | |
3787 | ||
3788 | if (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts) | |
3789 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); | |
3790 | devip = devInfoReg(sdp); | |
1da177e4 | 3791 | if (devip) |
cbf67842 DG |
3792 | set_bit(SDEBUG_UA_POR, devip->uas_bm); |
3793 | } | |
3794 | return SUCCESS; | |
3795 | } | |
3796 | ||
3797 | static int scsi_debug_target_reset(struct scsi_cmnd *SCpnt) | |
3798 | { | |
3799 | struct sdebug_host_info *sdbg_host; | |
3800 | struct sdebug_dev_info *devip; | |
3801 | struct scsi_device *sdp; | |
3802 | struct Scsi_Host *hp; | |
3803 | int k = 0; | |
3804 | ||
3805 | ++num_target_resets; | |
3806 | if (!SCpnt) | |
3807 | goto lie; | |
3808 | sdp = SCpnt->device; | |
3809 | if (!sdp) | |
3810 | goto lie; | |
3811 | if (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts) | |
3812 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); | |
3813 | hp = sdp->host; | |
3814 | if (!hp) | |
3815 | goto lie; | |
3816 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); | |
3817 | if (sdbg_host) { | |
3818 | list_for_each_entry(devip, | |
3819 | &sdbg_host->dev_info_list, | |
3820 | dev_list) | |
3821 | if (devip->target == sdp->id) { | |
3822 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
3823 | ++k; | |
3824 | } | |
1da177e4 | 3825 | } |
cbf67842 DG |
3826 | if (SCSI_DEBUG_OPT_RESET_NOISE & scsi_debug_opts) |
3827 | sdev_printk(KERN_INFO, sdp, | |
3828 | "%s: %d device(s) found in target\n", __func__, k); | |
3829 | lie: | |
1da177e4 LT |
3830 | return SUCCESS; |
3831 | } | |
3832 | ||
3833 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) | |
3834 | { | |
3835 | struct sdebug_host_info *sdbg_host; | |
cbf67842 | 3836 | struct sdebug_dev_info *devip; |
1da177e4 LT |
3837 | struct scsi_device * sdp; |
3838 | struct Scsi_Host * hp; | |
cbf67842 | 3839 | int k = 0; |
1da177e4 | 3840 | |
1da177e4 | 3841 | ++num_bus_resets; |
cbf67842 DG |
3842 | if (!(SCpnt && SCpnt->device)) |
3843 | goto lie; | |
3844 | sdp = SCpnt->device; | |
3845 | if (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts) | |
3846 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); | |
3847 | hp = sdp->host; | |
3848 | if (hp) { | |
d1e4c9c5 | 3849 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
1da177e4 | 3850 | if (sdbg_host) { |
cbf67842 | 3851 | list_for_each_entry(devip, |
1da177e4 | 3852 | &sdbg_host->dev_info_list, |
cbf67842 DG |
3853 | dev_list) { |
3854 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
3855 | ++k; | |
3856 | } | |
1da177e4 LT |
3857 | } |
3858 | } | |
cbf67842 DG |
3859 | if (SCSI_DEBUG_OPT_RESET_NOISE & scsi_debug_opts) |
3860 | sdev_printk(KERN_INFO, sdp, | |
3861 | "%s: %d device(s) found in host\n", __func__, k); | |
3862 | lie: | |
1da177e4 LT |
3863 | return SUCCESS; |
3864 | } | |
3865 | ||
3866 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) | |
3867 | { | |
3868 | struct sdebug_host_info * sdbg_host; | |
cbf67842 DG |
3869 | struct sdebug_dev_info *devip; |
3870 | int k = 0; | |
1da177e4 | 3871 | |
1da177e4 | 3872 | ++num_host_resets; |
cbf67842 DG |
3873 | if ((SCpnt->device) && (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts)) |
3874 | sdev_printk(KERN_INFO, SCpnt->device, "%s\n", __func__); | |
1da177e4 LT |
3875 | spin_lock(&sdebug_host_list_lock); |
3876 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
cbf67842 DG |
3877 | list_for_each_entry(devip, &sdbg_host->dev_info_list, |
3878 | dev_list) { | |
3879 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
3880 | ++k; | |
3881 | } | |
1da177e4 LT |
3882 | } |
3883 | spin_unlock(&sdebug_host_list_lock); | |
3884 | stop_all_queued(); | |
cbf67842 DG |
3885 | if (SCSI_DEBUG_OPT_RESET_NOISE & scsi_debug_opts) |
3886 | sdev_printk(KERN_INFO, SCpnt->device, | |
3887 | "%s: %d device(s) found\n", __func__, k); | |
1da177e4 LT |
3888 | return SUCCESS; |
3889 | } | |
3890 | ||
f58b0efb | 3891 | static void __init sdebug_build_parts(unsigned char *ramp, |
5f2578e5 | 3892 | unsigned long store_size) |
1da177e4 LT |
3893 | { |
3894 | struct partition * pp; | |
3895 | int starts[SDEBUG_MAX_PARTS + 2]; | |
3896 | int sectors_per_part, num_sectors, k; | |
3897 | int heads_by_sects, start_sec, end_sec; | |
3898 | ||
3899 | /* assume partition table already zeroed */ | |
f58b0efb | 3900 | if ((scsi_debug_num_parts < 1) || (store_size < 1048576)) |
1da177e4 LT |
3901 | return; |
3902 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { | |
3903 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; | |
cbf67842 DG |
3904 | pr_warn("%s: reducing partitions to %d\n", __func__, |
3905 | SDEBUG_MAX_PARTS); | |
1da177e4 | 3906 | } |
c65b1445 | 3907 | num_sectors = (int)sdebug_store_sectors; |
1da177e4 LT |
3908 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
3909 | / scsi_debug_num_parts; | |
3910 | heads_by_sects = sdebug_heads * sdebug_sectors_per; | |
3911 | starts[0] = sdebug_sectors_per; | |
3912 | for (k = 1; k < scsi_debug_num_parts; ++k) | |
3913 | starts[k] = ((k * sectors_per_part) / heads_by_sects) | |
3914 | * heads_by_sects; | |
3915 | starts[scsi_debug_num_parts] = num_sectors; | |
3916 | starts[scsi_debug_num_parts + 1] = 0; | |
3917 | ||
3918 | ramp[510] = 0x55; /* magic partition markings */ | |
3919 | ramp[511] = 0xAA; | |
3920 | pp = (struct partition *)(ramp + 0x1be); | |
3921 | for (k = 0; starts[k + 1]; ++k, ++pp) { | |
3922 | start_sec = starts[k]; | |
3923 | end_sec = starts[k + 1] - 1; | |
3924 | pp->boot_ind = 0; | |
3925 | ||
3926 | pp->cyl = start_sec / heads_by_sects; | |
3927 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) | |
3928 | / sdebug_sectors_per; | |
3929 | pp->sector = (start_sec % sdebug_sectors_per) + 1; | |
3930 | ||
3931 | pp->end_cyl = end_sec / heads_by_sects; | |
3932 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) | |
3933 | / sdebug_sectors_per; | |
3934 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; | |
3935 | ||
150c3544 AM |
3936 | pp->start_sect = cpu_to_le32(start_sec); |
3937 | pp->nr_sects = cpu_to_le32(end_sec - start_sec + 1); | |
1da177e4 LT |
3938 | pp->sys_ind = 0x83; /* plain Linux partition */ |
3939 | } | |
3940 | } | |
3941 | ||
cbf67842 DG |
3942 | static int |
3943 | schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip, | |
3944 | int scsi_result, int delta_jiff) | |
1da177e4 | 3945 | { |
cbf67842 | 3946 | unsigned long iflags; |
cd62b7da | 3947 | int k, num_in_q, qdepth, inject; |
cbf67842 DG |
3948 | struct sdebug_queued_cmd *sqcp = NULL; |
3949 | struct scsi_device *sdp = cmnd->device; | |
3950 | ||
3951 | if (NULL == cmnd || NULL == devip) { | |
3952 | pr_warn("%s: called with NULL cmnd or devip pointer\n", | |
3953 | __func__); | |
3954 | /* no particularly good error to report back */ | |
3955 | return SCSI_MLQUEUE_HOST_BUSY; | |
3956 | } | |
3957 | if ((scsi_result) && (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
3958 | sdev_printk(KERN_INFO, sdp, "%s: non-zero result=0x%x\n", | |
3959 | __func__, scsi_result); | |
cd62b7da DG |
3960 | if (delta_jiff == 0) |
3961 | goto respond_in_thread; | |
1da177e4 | 3962 | |
cd62b7da | 3963 | /* schedule the response at a later time if resources permit */ |
cbf67842 DG |
3964 | spin_lock_irqsave(&queued_arr_lock, iflags); |
3965 | num_in_q = atomic_read(&devip->num_in_q); | |
3966 | qdepth = cmnd->device->queue_depth; | |
cbf67842 | 3967 | inject = 0; |
cd62b7da DG |
3968 | if ((qdepth > 0) && (num_in_q >= qdepth)) { |
3969 | if (scsi_result) { | |
3970 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3971 | goto respond_in_thread; | |
3972 | } else | |
3973 | scsi_result = device_qfull_result; | |
3974 | } else if ((scsi_debug_every_nth != 0) && | |
3975 | (SCSI_DEBUG_OPT_RARE_TSF & scsi_debug_opts) && | |
3976 | (scsi_result == 0)) { | |
cbf67842 DG |
3977 | if ((num_in_q == (qdepth - 1)) && |
3978 | (atomic_inc_return(&sdebug_a_tsf) >= | |
3979 | abs(scsi_debug_every_nth))) { | |
3980 | atomic_set(&sdebug_a_tsf, 0); | |
3981 | inject = 1; | |
cd62b7da | 3982 | scsi_result = device_qfull_result; |
1da177e4 LT |
3983 | } |
3984 | } | |
1da177e4 | 3985 | |
cd62b7da | 3986 | k = find_first_zero_bit(queued_in_use_bm, scsi_debug_max_queue); |
cbf67842 | 3987 | if (k >= scsi_debug_max_queue) { |
cbf67842 | 3988 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
cd62b7da DG |
3989 | if (scsi_result) |
3990 | goto respond_in_thread; | |
3991 | else if (SCSI_DEBUG_OPT_ALL_TSF & scsi_debug_opts) | |
3992 | scsi_result = device_qfull_result; | |
cbf67842 DG |
3993 | if (SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) |
3994 | sdev_printk(KERN_INFO, sdp, | |
cd62b7da DG |
3995 | "%s: max_queue=%d exceeded, %s\n", |
3996 | __func__, scsi_debug_max_queue, | |
3997 | (scsi_result ? "status: TASK SET FULL" : | |
3998 | "report: host busy")); | |
3999 | if (scsi_result) | |
4000 | goto respond_in_thread; | |
4001 | else | |
cbf67842 DG |
4002 | return SCSI_MLQUEUE_HOST_BUSY; |
4003 | } | |
4004 | __set_bit(k, queued_in_use_bm); | |
4005 | atomic_inc(&devip->num_in_q); | |
4006 | sqcp = &queued_arr[k]; | |
4007 | sqcp->a_cmnd = cmnd; | |
4008 | cmnd->result = scsi_result; | |
4009 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
4010 | if (delta_jiff > 0) { | |
4011 | if (NULL == sqcp->cmnd_timerp) { | |
4012 | sqcp->cmnd_timerp = kmalloc(sizeof(struct timer_list), | |
4013 | GFP_ATOMIC); | |
4014 | if (NULL == sqcp->cmnd_timerp) | |
4015 | return SCSI_MLQUEUE_HOST_BUSY; | |
4016 | init_timer(sqcp->cmnd_timerp); | |
1da177e4 | 4017 | } |
cbf67842 DG |
4018 | sqcp->cmnd_timerp->function = sdebug_q_cmd_complete; |
4019 | sqcp->cmnd_timerp->data = k; | |
4020 | sqcp->cmnd_timerp->expires = get_jiffies_64() + delta_jiff; | |
4021 | add_timer(sqcp->cmnd_timerp); | |
4022 | } else if (scsi_debug_ndelay > 0) { | |
4023 | ktime_t kt = ktime_set(0, scsi_debug_ndelay); | |
4024 | struct sdebug_hrtimer *sd_hp = sqcp->sd_hrtp; | |
4025 | ||
4026 | if (NULL == sd_hp) { | |
4027 | sd_hp = kmalloc(sizeof(*sd_hp), GFP_ATOMIC); | |
4028 | if (NULL == sd_hp) | |
4029 | return SCSI_MLQUEUE_HOST_BUSY; | |
4030 | sqcp->sd_hrtp = sd_hp; | |
4031 | hrtimer_init(&sd_hp->hrt, CLOCK_MONOTONIC, | |
4032 | HRTIMER_MODE_REL); | |
4033 | sd_hp->hrt.function = sdebug_q_cmd_hrt_complete; | |
4034 | sd_hp->qa_indx = k; | |
1da177e4 | 4035 | } |
cbf67842 DG |
4036 | hrtimer_start(&sd_hp->hrt, kt, HRTIMER_MODE_REL); |
4037 | } else { /* delay < 0 */ | |
4038 | if (NULL == sqcp->tletp) { | |
4039 | sqcp->tletp = kmalloc(sizeof(*sqcp->tletp), | |
4040 | GFP_ATOMIC); | |
4041 | if (NULL == sqcp->tletp) | |
4042 | return SCSI_MLQUEUE_HOST_BUSY; | |
4043 | tasklet_init(sqcp->tletp, | |
4044 | sdebug_q_cmd_complete, k); | |
4045 | } | |
4046 | if (-1 == delta_jiff) | |
4047 | tasklet_hi_schedule(sqcp->tletp); | |
4048 | else | |
4049 | tasklet_schedule(sqcp->tletp); | |
1da177e4 | 4050 | } |
cd62b7da DG |
4051 | if ((SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) && |
4052 | (scsi_result == device_qfull_result)) | |
cbf67842 DG |
4053 | sdev_printk(KERN_INFO, sdp, |
4054 | "%s: num_in_q=%d +1, %s%s\n", __func__, | |
4055 | num_in_q, (inject ? "<inject> " : ""), | |
4056 | "status: TASK SET FULL"); | |
4057 | return 0; | |
cd62b7da DG |
4058 | |
4059 | respond_in_thread: /* call back to mid-layer using invocation thread */ | |
4060 | cmnd->result = scsi_result; | |
4061 | cmnd->scsi_done(cmnd); | |
4062 | return 0; | |
1da177e4 | 4063 | } |
cbf67842 | 4064 | |
23183910 DG |
4065 | /* Note: The following macros create attribute files in the |
4066 | /sys/module/scsi_debug/parameters directory. Unfortunately this | |
4067 | driver is unaware of a change and cannot trigger auxiliary actions | |
4068 | as it can when the corresponding attribute in the | |
4069 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. | |
4070 | */ | |
c65b1445 | 4071 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
5b94e232 | 4072 | module_param_named(ato, scsi_debug_ato, int, S_IRUGO); |
0759c666 | 4073 | module_param_named(clustering, scsi_debug_clustering, bool, S_IRUGO | S_IWUSR); |
c65b1445 DG |
4074 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); |
4075 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); | |
5b94e232 MP |
4076 | module_param_named(dif, scsi_debug_dif, int, S_IRUGO); |
4077 | module_param_named(dix, scsi_debug_dix, int, S_IRUGO); | |
c65b1445 DG |
4078 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); |
4079 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); | |
23183910 | 4080 | module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); |
68aee7ba | 4081 | module_param_named(guard, scsi_debug_guard, uint, S_IRUGO); |
cbf67842 | 4082 | module_param_named(host_lock, scsi_debug_host_lock, bool, S_IRUGO | S_IWUSR); |
5b94e232 MP |
4083 | module_param_named(lbpu, scsi_debug_lbpu, int, S_IRUGO); |
4084 | module_param_named(lbpws, scsi_debug_lbpws, int, S_IRUGO); | |
4085 | module_param_named(lbpws10, scsi_debug_lbpws10, int, S_IRUGO); | |
be1dd78d | 4086 | module_param_named(lbprz, scsi_debug_lbprz, int, S_IRUGO); |
5b94e232 | 4087 | module_param_named(lowest_aligned, scsi_debug_lowest_aligned, int, S_IRUGO); |
c65b1445 | 4088 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
78d4e5a0 | 4089 | module_param_named(max_queue, scsi_debug_max_queue, int, S_IRUGO | S_IWUSR); |
cbf67842 | 4090 | module_param_named(ndelay, scsi_debug_ndelay, int, S_IRUGO | S_IWUSR); |
c65b1445 | 4091 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); |
78d4e5a0 | 4092 | module_param_named(no_uld, scsi_debug_no_uld, int, S_IRUGO); |
c65b1445 DG |
4093 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); |
4094 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); | |
5b94e232 | 4095 | module_param_named(opt_blks, scsi_debug_opt_blks, int, S_IRUGO); |
c65b1445 | 4096 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); |
5b94e232 | 4097 | module_param_named(physblk_exp, scsi_debug_physblk_exp, int, S_IRUGO); |
c65b1445 | 4098 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); |
d986788b | 4099 | module_param_named(removable, scsi_debug_removable, bool, S_IRUGO | S_IWUSR); |
c65b1445 | 4100 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); |
597136ab | 4101 | module_param_named(sector_size, scsi_debug_sector_size, int, S_IRUGO); |
c2248fc9 | 4102 | module_param_named(strict, scsi_debug_strict, bool, S_IRUGO | S_IWUSR); |
5b94e232 MP |
4103 | module_param_named(unmap_alignment, scsi_debug_unmap_alignment, int, S_IRUGO); |
4104 | module_param_named(unmap_granularity, scsi_debug_unmap_granularity, int, S_IRUGO); | |
44d92694 MP |
4105 | module_param_named(unmap_max_blocks, scsi_debug_unmap_max_blocks, int, S_IRUGO); |
4106 | module_param_named(unmap_max_desc, scsi_debug_unmap_max_desc, int, S_IRUGO); | |
5b94e232 MP |
4107 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); |
4108 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, | |
4109 | S_IRUGO | S_IWUSR); | |
4110 | module_param_named(write_same_length, scsi_debug_write_same_length, int, | |
4111 | S_IRUGO | S_IWUSR); | |
1da177e4 LT |
4112 | |
4113 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); | |
4114 | MODULE_DESCRIPTION("SCSI debug adapter driver"); | |
4115 | MODULE_LICENSE("GPL"); | |
4116 | MODULE_VERSION(SCSI_DEBUG_VERSION); | |
4117 | ||
4118 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); | |
5b94e232 | 4119 | MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)"); |
0759c666 | 4120 | MODULE_PARM_DESC(clustering, "when set enables larger transfers (def=0)"); |
cbf67842 | 4121 | MODULE_PARM_DESC(delay, "response delay (def=1 jiffy); 0:imm, -1,-2:tiny"); |
c2248fc9 | 4122 | MODULE_PARM_DESC(dev_size_mb, "size in MiB of ram shared by devs(def=8)"); |
5b94e232 MP |
4123 | MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); |
4124 | MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); | |
c65b1445 | 4125 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); |
beb87c33 | 4126 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
23183910 | 4127 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
5b94e232 | 4128 | MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)"); |
cbf67842 | 4129 | MODULE_PARM_DESC(host_lock, "use host_lock around all commands (def=0)"); |
5b94e232 MP |
4130 | MODULE_PARM_DESC(lbpu, "enable LBP, support UNMAP command (def=0)"); |
4131 | MODULE_PARM_DESC(lbpws, "enable LBP, support WRITE SAME(16) with UNMAP bit (def=0)"); | |
4132 | MODULE_PARM_DESC(lbpws10, "enable LBP, support WRITE SAME(10) with UNMAP bit (def=0)"); | |
be1dd78d | 4133 | MODULE_PARM_DESC(lbprz, "unmapped blocks return 0 on read (def=1)"); |
5b94e232 | 4134 | MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)"); |
c65b1445 | 4135 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
cbf67842 DG |
4136 | MODULE_PARM_DESC(max_queue, "max number of queued commands (1 to max(def))"); |
4137 | MODULE_PARM_DESC(ndelay, "response delay in nanoseconds (def=0 -> ignore)"); | |
c65b1445 | 4138 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); |
78d4e5a0 | 4139 | MODULE_PARM_DESC(no_uld, "stop ULD (e.g. sd driver) attaching (def=0))"); |
1da177e4 | 4140 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
c65b1445 | 4141 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
5b94e232 | 4142 | MODULE_PARM_DESC(opt_blks, "optimal transfer length in block (def=64)"); |
6f3cbf55 | 4143 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
5b94e232 | 4144 | MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)"); |
1da177e4 | 4145 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
d986788b | 4146 | MODULE_PARM_DESC(removable, "claim to have removable media (def=0)"); |
e46b0344 | 4147 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=6[SPC-4])"); |
ea61fca5 | 4148 | MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)"); |
c2248fc9 | 4149 | MODULE_PARM_DESC(strict, "stricter checks: reserved field in cdb (def=0)"); |
5b94e232 MP |
4150 | MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)"); |
4151 | MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=1)"); | |
6014759c MP |
4152 | MODULE_PARM_DESC(unmap_max_blocks, "max # of blocks can be unmapped in one cmd (def=0xffffffff)"); |
4153 | MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=256)"); | |
c2248fc9 | 4154 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte (GiB) size (def=0 -> use dev_size_mb)"); |
5b94e232 MP |
4155 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
4156 | MODULE_PARM_DESC(write_same_length, "Maximum blocks per WRITE SAME cmd (def=0xffff)"); | |
1da177e4 LT |
4157 | |
4158 | static char sdebug_info[256]; | |
4159 | ||
4160 | static const char * scsi_debug_info(struct Scsi_Host * shp) | |
4161 | { | |
4162 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " | |
4163 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, | |
4164 | scsi_debug_version_date, scsi_debug_dev_size_mb, | |
4165 | scsi_debug_opts); | |
4166 | return sdebug_info; | |
4167 | } | |
4168 | ||
cbf67842 | 4169 | /* 'echo <val> > /proc/scsi/scsi_debug/<host_id>' writes to opts */ |
c8ed555a | 4170 | static int scsi_debug_write_info(struct Scsi_Host *host, char *buffer, int length) |
1da177e4 | 4171 | { |
c8ed555a AV |
4172 | char arr[16]; |
4173 | int opts; | |
4174 | int minLen = length > 15 ? 15 : length; | |
1da177e4 | 4175 | |
c8ed555a AV |
4176 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
4177 | return -EACCES; | |
4178 | memcpy(arr, buffer, minLen); | |
4179 | arr[minLen] = '\0'; | |
4180 | if (1 != sscanf(arr, "%d", &opts)) | |
4181 | return -EINVAL; | |
4182 | scsi_debug_opts = opts; | |
4183 | if (scsi_debug_every_nth != 0) | |
cbf67842 | 4184 | atomic_set(&sdebug_cmnd_count, 0); |
c8ed555a AV |
4185 | return length; |
4186 | } | |
1da177e4 | 4187 | |
cbf67842 DG |
4188 | /* Output seen with 'cat /proc/scsi/scsi_debug/<host_id>'. It will be the |
4189 | * same for each scsi_debug host (if more than one). Some of the counters | |
4190 | * output are not atomics so might be inaccurate in a busy system. */ | |
c8ed555a AV |
4191 | static int scsi_debug_show_info(struct seq_file *m, struct Scsi_Host *host) |
4192 | { | |
cbf67842 DG |
4193 | int f, l; |
4194 | char b[32]; | |
4195 | ||
4196 | if (scsi_debug_every_nth > 0) | |
4197 | snprintf(b, sizeof(b), " (curr:%d)", | |
4198 | ((SCSI_DEBUG_OPT_RARE_TSF & scsi_debug_opts) ? | |
4199 | atomic_read(&sdebug_a_tsf) : | |
4200 | atomic_read(&sdebug_cmnd_count))); | |
4201 | else | |
4202 | b[0] = '\0'; | |
4203 | ||
4204 | seq_printf(m, "scsi_debug adapter driver, version %s [%s]\n" | |
4205 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " | |
4206 | "every_nth=%d%s\n" | |
4207 | "delay=%d, ndelay=%d, max_luns=%d, q_completions=%d\n" | |
4208 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" | |
4209 | "command aborts=%d; RESETs: device=%d, target=%d, bus=%d, " | |
4210 | "host=%d\ndix_reads=%d dix_writes=%d dif_errors=%d " | |
4211 | "usec_in_jiffy=%lu\n", | |
4212 | SCSI_DEBUG_VERSION, scsi_debug_version_date, | |
4213 | scsi_debug_num_tgts, scsi_debug_dev_size_mb, scsi_debug_opts, | |
4214 | scsi_debug_every_nth, b, scsi_debug_delay, scsi_debug_ndelay, | |
4215 | scsi_debug_max_luns, atomic_read(&sdebug_completions), | |
4216 | scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads, | |
4217 | sdebug_sectors_per, num_aborts, num_dev_resets, | |
4218 | num_target_resets, num_bus_resets, num_host_resets, | |
4219 | dix_reads, dix_writes, dif_errors, TICK_NSEC / 1000); | |
4220 | ||
4221 | f = find_first_bit(queued_in_use_bm, scsi_debug_max_queue); | |
4222 | if (f != scsi_debug_max_queue) { | |
4223 | l = find_last_bit(queued_in_use_bm, scsi_debug_max_queue); | |
4224 | seq_printf(m, " %s BUSY: first,last bits set: %d,%d\n", | |
4225 | "queued_in_use_bm", f, l); | |
4226 | } | |
c8ed555a | 4227 | return 0; |
1da177e4 LT |
4228 | } |
4229 | ||
82069379 | 4230 | static ssize_t delay_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4231 | { |
4232 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); | |
4233 | } | |
cbf67842 | 4234 | /* Returns -EBUSY if delay is being changed and commands are queued */ |
82069379 AM |
4235 | static ssize_t delay_store(struct device_driver *ddp, const char *buf, |
4236 | size_t count) | |
1da177e4 | 4237 | { |
cbf67842 DG |
4238 | int delay, res; |
4239 | ||
4240 | if ((count > 0) && (1 == sscanf(buf, "%d", &delay))) { | |
4241 | res = count; | |
4242 | if (scsi_debug_delay != delay) { | |
4243 | unsigned long iflags; | |
4244 | int k; | |
4245 | ||
4246 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
4247 | k = find_first_bit(queued_in_use_bm, | |
4248 | scsi_debug_max_queue); | |
4249 | if (k != scsi_debug_max_queue) | |
4250 | res = -EBUSY; /* have queued commands */ | |
4251 | else { | |
4252 | scsi_debug_delay = delay; | |
4253 | scsi_debug_ndelay = 0; | |
4254 | } | |
4255 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1da177e4 | 4256 | } |
cbf67842 | 4257 | return res; |
1da177e4 LT |
4258 | } |
4259 | return -EINVAL; | |
4260 | } | |
82069379 | 4261 | static DRIVER_ATTR_RW(delay); |
1da177e4 | 4262 | |
cbf67842 DG |
4263 | static ssize_t ndelay_show(struct device_driver *ddp, char *buf) |
4264 | { | |
4265 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ndelay); | |
4266 | } | |
4267 | /* Returns -EBUSY if ndelay is being changed and commands are queued */ | |
4268 | /* If > 0 and accepted then scsi_debug_delay is set to DELAY_OVERRIDDEN */ | |
4269 | static ssize_t ndelay_store(struct device_driver *ddp, const char *buf, | |
4270 | size_t count) | |
4271 | { | |
4272 | unsigned long iflags; | |
4273 | int ndelay, res, k; | |
4274 | ||
4275 | if ((count > 0) && (1 == sscanf(buf, "%d", &ndelay)) && | |
4276 | (ndelay >= 0) && (ndelay < 1000000000)) { | |
4277 | res = count; | |
4278 | if (scsi_debug_ndelay != ndelay) { | |
4279 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
4280 | k = find_first_bit(queued_in_use_bm, | |
4281 | scsi_debug_max_queue); | |
4282 | if (k != scsi_debug_max_queue) | |
4283 | res = -EBUSY; /* have queued commands */ | |
4284 | else { | |
4285 | scsi_debug_ndelay = ndelay; | |
4286 | scsi_debug_delay = ndelay ? DELAY_OVERRIDDEN | |
4287 | : DEF_DELAY; | |
4288 | } | |
4289 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
4290 | } | |
4291 | return res; | |
4292 | } | |
4293 | return -EINVAL; | |
4294 | } | |
4295 | static DRIVER_ATTR_RW(ndelay); | |
4296 | ||
82069379 | 4297 | static ssize_t opts_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4298 | { |
4299 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); | |
4300 | } | |
4301 | ||
82069379 AM |
4302 | static ssize_t opts_store(struct device_driver *ddp, const char *buf, |
4303 | size_t count) | |
1da177e4 LT |
4304 | { |
4305 | int opts; | |
4306 | char work[20]; | |
4307 | ||
4308 | if (1 == sscanf(buf, "%10s", work)) { | |
48a96876 | 4309 | if (0 == strncasecmp(work,"0x", 2)) { |
1da177e4 LT |
4310 | if (1 == sscanf(&work[2], "%x", &opts)) |
4311 | goto opts_done; | |
4312 | } else { | |
4313 | if (1 == sscanf(work, "%d", &opts)) | |
4314 | goto opts_done; | |
4315 | } | |
4316 | } | |
4317 | return -EINVAL; | |
4318 | opts_done: | |
4319 | scsi_debug_opts = opts; | |
817fd66b DG |
4320 | if (SCSI_DEBUG_OPT_RECOVERED_ERR & opts) |
4321 | sdebug_any_injecting_opt = true; | |
4322 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & opts) | |
4323 | sdebug_any_injecting_opt = true; | |
4324 | else if (SCSI_DEBUG_OPT_DIF_ERR & opts) | |
4325 | sdebug_any_injecting_opt = true; | |
4326 | else if (SCSI_DEBUG_OPT_DIX_ERR & opts) | |
4327 | sdebug_any_injecting_opt = true; | |
4328 | else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & opts) | |
4329 | sdebug_any_injecting_opt = true; | |
cbf67842 DG |
4330 | atomic_set(&sdebug_cmnd_count, 0); |
4331 | atomic_set(&sdebug_a_tsf, 0); | |
1da177e4 LT |
4332 | return count; |
4333 | } | |
82069379 | 4334 | static DRIVER_ATTR_RW(opts); |
1da177e4 | 4335 | |
82069379 | 4336 | static ssize_t ptype_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4337 | { |
4338 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); | |
4339 | } | |
82069379 AM |
4340 | static ssize_t ptype_store(struct device_driver *ddp, const char *buf, |
4341 | size_t count) | |
1da177e4 LT |
4342 | { |
4343 | int n; | |
4344 | ||
4345 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4346 | scsi_debug_ptype = n; | |
4347 | return count; | |
4348 | } | |
4349 | return -EINVAL; | |
4350 | } | |
82069379 | 4351 | static DRIVER_ATTR_RW(ptype); |
1da177e4 | 4352 | |
82069379 | 4353 | static ssize_t dsense_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4354 | { |
4355 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); | |
4356 | } | |
82069379 AM |
4357 | static ssize_t dsense_store(struct device_driver *ddp, const char *buf, |
4358 | size_t count) | |
1da177e4 LT |
4359 | { |
4360 | int n; | |
4361 | ||
4362 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4363 | scsi_debug_dsense = n; | |
4364 | return count; | |
4365 | } | |
4366 | return -EINVAL; | |
4367 | } | |
82069379 | 4368 | static DRIVER_ATTR_RW(dsense); |
1da177e4 | 4369 | |
82069379 | 4370 | static ssize_t fake_rw_show(struct device_driver *ddp, char *buf) |
23183910 DG |
4371 | { |
4372 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); | |
4373 | } | |
82069379 AM |
4374 | static ssize_t fake_rw_store(struct device_driver *ddp, const char *buf, |
4375 | size_t count) | |
23183910 DG |
4376 | { |
4377 | int n; | |
4378 | ||
4379 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
cbf67842 DG |
4380 | n = (n > 0); |
4381 | scsi_debug_fake_rw = (scsi_debug_fake_rw > 0); | |
4382 | if (scsi_debug_fake_rw != n) { | |
4383 | if ((0 == n) && (NULL == fake_storep)) { | |
4384 | unsigned long sz = | |
4385 | (unsigned long)scsi_debug_dev_size_mb * | |
4386 | 1048576; | |
4387 | ||
4388 | fake_storep = vmalloc(sz); | |
4389 | if (NULL == fake_storep) { | |
4390 | pr_err("%s: out of memory, 9\n", | |
4391 | __func__); | |
4392 | return -ENOMEM; | |
4393 | } | |
4394 | memset(fake_storep, 0, sz); | |
4395 | } | |
4396 | scsi_debug_fake_rw = n; | |
4397 | } | |
23183910 DG |
4398 | return count; |
4399 | } | |
4400 | return -EINVAL; | |
4401 | } | |
82069379 | 4402 | static DRIVER_ATTR_RW(fake_rw); |
23183910 | 4403 | |
82069379 | 4404 | static ssize_t no_lun_0_show(struct device_driver *ddp, char *buf) |
c65b1445 DG |
4405 | { |
4406 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); | |
4407 | } | |
82069379 AM |
4408 | static ssize_t no_lun_0_store(struct device_driver *ddp, const char *buf, |
4409 | size_t count) | |
c65b1445 DG |
4410 | { |
4411 | int n; | |
4412 | ||
4413 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4414 | scsi_debug_no_lun_0 = n; | |
4415 | return count; | |
4416 | } | |
4417 | return -EINVAL; | |
4418 | } | |
82069379 | 4419 | static DRIVER_ATTR_RW(no_lun_0); |
c65b1445 | 4420 | |
82069379 | 4421 | static ssize_t num_tgts_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4422 | { |
4423 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); | |
4424 | } | |
82069379 AM |
4425 | static ssize_t num_tgts_store(struct device_driver *ddp, const char *buf, |
4426 | size_t count) | |
1da177e4 LT |
4427 | { |
4428 | int n; | |
4429 | ||
4430 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4431 | scsi_debug_num_tgts = n; | |
4432 | sdebug_max_tgts_luns(); | |
4433 | return count; | |
4434 | } | |
4435 | return -EINVAL; | |
4436 | } | |
82069379 | 4437 | static DRIVER_ATTR_RW(num_tgts); |
1da177e4 | 4438 | |
82069379 | 4439 | static ssize_t dev_size_mb_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4440 | { |
4441 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); | |
4442 | } | |
82069379 | 4443 | static DRIVER_ATTR_RO(dev_size_mb); |
1da177e4 | 4444 | |
82069379 | 4445 | static ssize_t num_parts_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4446 | { |
4447 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); | |
4448 | } | |
82069379 | 4449 | static DRIVER_ATTR_RO(num_parts); |
1da177e4 | 4450 | |
82069379 | 4451 | static ssize_t every_nth_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4452 | { |
4453 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); | |
4454 | } | |
82069379 AM |
4455 | static ssize_t every_nth_store(struct device_driver *ddp, const char *buf, |
4456 | size_t count) | |
1da177e4 LT |
4457 | { |
4458 | int nth; | |
4459 | ||
4460 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { | |
4461 | scsi_debug_every_nth = nth; | |
cbf67842 | 4462 | atomic_set(&sdebug_cmnd_count, 0); |
1da177e4 LT |
4463 | return count; |
4464 | } | |
4465 | return -EINVAL; | |
4466 | } | |
82069379 | 4467 | static DRIVER_ATTR_RW(every_nth); |
1da177e4 | 4468 | |
82069379 | 4469 | static ssize_t max_luns_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4470 | { |
4471 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); | |
4472 | } | |
82069379 AM |
4473 | static ssize_t max_luns_store(struct device_driver *ddp, const char *buf, |
4474 | size_t count) | |
1da177e4 LT |
4475 | { |
4476 | int n; | |
19c8ead7 | 4477 | bool changed; |
1da177e4 LT |
4478 | |
4479 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
19c8ead7 | 4480 | changed = (scsi_debug_max_luns != n); |
1da177e4 LT |
4481 | scsi_debug_max_luns = n; |
4482 | sdebug_max_tgts_luns(); | |
19c8ead7 EM |
4483 | if (changed && (scsi_debug_scsi_level >= 5)) { /* >= SPC-3 */ |
4484 | struct sdebug_host_info *sdhp; | |
4485 | struct sdebug_dev_info *dp; | |
4486 | ||
4487 | spin_lock(&sdebug_host_list_lock); | |
4488 | list_for_each_entry(sdhp, &sdebug_host_list, | |
4489 | host_list) { | |
4490 | list_for_each_entry(dp, &sdhp->dev_info_list, | |
4491 | dev_list) { | |
4492 | set_bit(SDEBUG_UA_LUNS_CHANGED, | |
4493 | dp->uas_bm); | |
4494 | } | |
4495 | } | |
4496 | spin_unlock(&sdebug_host_list_lock); | |
4497 | } | |
1da177e4 LT |
4498 | return count; |
4499 | } | |
4500 | return -EINVAL; | |
4501 | } | |
82069379 | 4502 | static DRIVER_ATTR_RW(max_luns); |
1da177e4 | 4503 | |
82069379 | 4504 | static ssize_t max_queue_show(struct device_driver *ddp, char *buf) |
78d4e5a0 DG |
4505 | { |
4506 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_queue); | |
4507 | } | |
cbf67842 DG |
4508 | /* N.B. max_queue can be changed while there are queued commands. In flight |
4509 | * commands beyond the new max_queue will be completed. */ | |
82069379 AM |
4510 | static ssize_t max_queue_store(struct device_driver *ddp, const char *buf, |
4511 | size_t count) | |
78d4e5a0 | 4512 | { |
cbf67842 DG |
4513 | unsigned long iflags; |
4514 | int n, k; | |
78d4e5a0 DG |
4515 | |
4516 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n > 0) && | |
4517 | (n <= SCSI_DEBUG_CANQUEUE)) { | |
cbf67842 DG |
4518 | spin_lock_irqsave(&queued_arr_lock, iflags); |
4519 | k = find_last_bit(queued_in_use_bm, SCSI_DEBUG_CANQUEUE); | |
78d4e5a0 | 4520 | scsi_debug_max_queue = n; |
cbf67842 DG |
4521 | if (SCSI_DEBUG_CANQUEUE == k) |
4522 | atomic_set(&retired_max_queue, 0); | |
4523 | else if (k >= n) | |
4524 | atomic_set(&retired_max_queue, k + 1); | |
4525 | else | |
4526 | atomic_set(&retired_max_queue, 0); | |
4527 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
78d4e5a0 DG |
4528 | return count; |
4529 | } | |
4530 | return -EINVAL; | |
4531 | } | |
82069379 | 4532 | static DRIVER_ATTR_RW(max_queue); |
78d4e5a0 | 4533 | |
82069379 | 4534 | static ssize_t no_uld_show(struct device_driver *ddp, char *buf) |
78d4e5a0 DG |
4535 | { |
4536 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_uld); | |
4537 | } | |
82069379 | 4538 | static DRIVER_ATTR_RO(no_uld); |
78d4e5a0 | 4539 | |
82069379 | 4540 | static ssize_t scsi_level_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4541 | { |
4542 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); | |
4543 | } | |
82069379 | 4544 | static DRIVER_ATTR_RO(scsi_level); |
1da177e4 | 4545 | |
82069379 | 4546 | static ssize_t virtual_gb_show(struct device_driver *ddp, char *buf) |
c65b1445 DG |
4547 | { |
4548 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); | |
4549 | } | |
82069379 AM |
4550 | static ssize_t virtual_gb_store(struct device_driver *ddp, const char *buf, |
4551 | size_t count) | |
c65b1445 | 4552 | { |
c2248fc9 | 4553 | int n; |
0d01c5df | 4554 | bool changed; |
c65b1445 DG |
4555 | |
4556 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
0d01c5df | 4557 | changed = (scsi_debug_virtual_gb != n); |
c65b1445 | 4558 | scsi_debug_virtual_gb = n; |
28898873 | 4559 | sdebug_capacity = get_sdebug_capacity(); |
0d01c5df DG |
4560 | if (changed) { |
4561 | struct sdebug_host_info *sdhp; | |
4562 | struct sdebug_dev_info *dp; | |
4563 | ||
4bc6b634 | 4564 | spin_lock(&sdebug_host_list_lock); |
0d01c5df DG |
4565 | list_for_each_entry(sdhp, &sdebug_host_list, |
4566 | host_list) { | |
4567 | list_for_each_entry(dp, &sdhp->dev_info_list, | |
4568 | dev_list) { | |
4569 | set_bit(SDEBUG_UA_CAPACITY_CHANGED, | |
4570 | dp->uas_bm); | |
4571 | } | |
4572 | } | |
4bc6b634 | 4573 | spin_unlock(&sdebug_host_list_lock); |
0d01c5df | 4574 | } |
c65b1445 DG |
4575 | return count; |
4576 | } | |
4577 | return -EINVAL; | |
4578 | } | |
82069379 | 4579 | static DRIVER_ATTR_RW(virtual_gb); |
c65b1445 | 4580 | |
82069379 | 4581 | static ssize_t add_host_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
4582 | { |
4583 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); | |
4584 | } | |
4585 | ||
82069379 AM |
4586 | static ssize_t add_host_store(struct device_driver *ddp, const char *buf, |
4587 | size_t count) | |
1da177e4 | 4588 | { |
f3df41cf | 4589 | int delta_hosts; |
1da177e4 | 4590 | |
f3df41cf | 4591 | if (sscanf(buf, "%d", &delta_hosts) != 1) |
1da177e4 | 4592 | return -EINVAL; |
1da177e4 LT |
4593 | if (delta_hosts > 0) { |
4594 | do { | |
4595 | sdebug_add_adapter(); | |
4596 | } while (--delta_hosts); | |
4597 | } else if (delta_hosts < 0) { | |
4598 | do { | |
4599 | sdebug_remove_adapter(); | |
4600 | } while (++delta_hosts); | |
4601 | } | |
4602 | return count; | |
4603 | } | |
82069379 | 4604 | static DRIVER_ATTR_RW(add_host); |
1da177e4 | 4605 | |
82069379 | 4606 | static ssize_t vpd_use_hostno_show(struct device_driver *ddp, char *buf) |
23183910 DG |
4607 | { |
4608 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); | |
4609 | } | |
82069379 AM |
4610 | static ssize_t vpd_use_hostno_store(struct device_driver *ddp, const char *buf, |
4611 | size_t count) | |
23183910 DG |
4612 | { |
4613 | int n; | |
4614 | ||
4615 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4616 | scsi_debug_vpd_use_hostno = n; | |
4617 | return count; | |
4618 | } | |
4619 | return -EINVAL; | |
4620 | } | |
82069379 | 4621 | static DRIVER_ATTR_RW(vpd_use_hostno); |
23183910 | 4622 | |
82069379 | 4623 | static ssize_t sector_size_show(struct device_driver *ddp, char *buf) |
597136ab MP |
4624 | { |
4625 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_sector_size); | |
4626 | } | |
82069379 | 4627 | static DRIVER_ATTR_RO(sector_size); |
597136ab | 4628 | |
82069379 | 4629 | static ssize_t dix_show(struct device_driver *ddp, char *buf) |
c6a44287 MP |
4630 | { |
4631 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dix); | |
4632 | } | |
82069379 | 4633 | static DRIVER_ATTR_RO(dix); |
c6a44287 | 4634 | |
82069379 | 4635 | static ssize_t dif_show(struct device_driver *ddp, char *buf) |
c6a44287 MP |
4636 | { |
4637 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dif); | |
4638 | } | |
82069379 | 4639 | static DRIVER_ATTR_RO(dif); |
c6a44287 | 4640 | |
82069379 | 4641 | static ssize_t guard_show(struct device_driver *ddp, char *buf) |
c6a44287 | 4642 | { |
68aee7ba | 4643 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_guard); |
c6a44287 | 4644 | } |
82069379 | 4645 | static DRIVER_ATTR_RO(guard); |
c6a44287 | 4646 | |
82069379 | 4647 | static ssize_t ato_show(struct device_driver *ddp, char *buf) |
c6a44287 MP |
4648 | { |
4649 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ato); | |
4650 | } | |
82069379 | 4651 | static DRIVER_ATTR_RO(ato); |
c6a44287 | 4652 | |
82069379 | 4653 | static ssize_t map_show(struct device_driver *ddp, char *buf) |
44d92694 MP |
4654 | { |
4655 | ssize_t count; | |
4656 | ||
5b94e232 | 4657 | if (!scsi_debug_lbp()) |
44d92694 MP |
4658 | return scnprintf(buf, PAGE_SIZE, "0-%u\n", |
4659 | sdebug_store_sectors); | |
4660 | ||
c7badc90 TH |
4661 | count = scnprintf(buf, PAGE_SIZE - 1, "%*pbl", |
4662 | (int)map_size, map_storep); | |
44d92694 | 4663 | buf[count++] = '\n'; |
c7badc90 | 4664 | buf[count] = '\0'; |
44d92694 MP |
4665 | |
4666 | return count; | |
4667 | } | |
82069379 | 4668 | static DRIVER_ATTR_RO(map); |
44d92694 | 4669 | |
82069379 | 4670 | static ssize_t removable_show(struct device_driver *ddp, char *buf) |
d986788b MP |
4671 | { |
4672 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_removable ? 1 : 0); | |
4673 | } | |
82069379 AM |
4674 | static ssize_t removable_store(struct device_driver *ddp, const char *buf, |
4675 | size_t count) | |
d986788b MP |
4676 | { |
4677 | int n; | |
4678 | ||
4679 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4680 | scsi_debug_removable = (n > 0); | |
4681 | return count; | |
4682 | } | |
4683 | return -EINVAL; | |
4684 | } | |
82069379 | 4685 | static DRIVER_ATTR_RW(removable); |
d986788b | 4686 | |
cbf67842 DG |
4687 | static ssize_t host_lock_show(struct device_driver *ddp, char *buf) |
4688 | { | |
4689 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!scsi_debug_host_lock); | |
4690 | } | |
4691 | /* Returns -EBUSY if host_lock is being changed and commands are queued */ | |
4692 | static ssize_t host_lock_store(struct device_driver *ddp, const char *buf, | |
4693 | size_t count) | |
4694 | { | |
4695 | int n, res; | |
4696 | ||
4697 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4698 | bool new_host_lock = (n > 0); | |
4699 | ||
4700 | res = count; | |
4701 | if (new_host_lock != scsi_debug_host_lock) { | |
4702 | unsigned long iflags; | |
4703 | int k; | |
4704 | ||
4705 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
4706 | k = find_first_bit(queued_in_use_bm, | |
4707 | scsi_debug_max_queue); | |
4708 | if (k != scsi_debug_max_queue) | |
4709 | res = -EBUSY; /* have queued commands */ | |
4710 | else | |
4711 | scsi_debug_host_lock = new_host_lock; | |
4712 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
4713 | } | |
4714 | return res; | |
4715 | } | |
4716 | return -EINVAL; | |
4717 | } | |
4718 | static DRIVER_ATTR_RW(host_lock); | |
4719 | ||
c2248fc9 DG |
4720 | static ssize_t strict_show(struct device_driver *ddp, char *buf) |
4721 | { | |
4722 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!scsi_debug_strict); | |
4723 | } | |
4724 | static ssize_t strict_store(struct device_driver *ddp, const char *buf, | |
4725 | size_t count) | |
4726 | { | |
4727 | int n; | |
4728 | ||
4729 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
4730 | scsi_debug_strict = (n > 0); | |
4731 | return count; | |
4732 | } | |
4733 | return -EINVAL; | |
4734 | } | |
4735 | static DRIVER_ATTR_RW(strict); | |
4736 | ||
cbf67842 | 4737 | |
82069379 | 4738 | /* Note: The following array creates attribute files in the |
23183910 DG |
4739 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these |
4740 | files (over those found in the /sys/module/scsi_debug/parameters | |
4741 | directory) is that auxiliary actions can be triggered when an attribute | |
4742 | is changed. For example see: sdebug_add_host_store() above. | |
4743 | */ | |
6ecaff7f | 4744 | |
82069379 AM |
4745 | static struct attribute *sdebug_drv_attrs[] = { |
4746 | &driver_attr_delay.attr, | |
4747 | &driver_attr_opts.attr, | |
4748 | &driver_attr_ptype.attr, | |
4749 | &driver_attr_dsense.attr, | |
4750 | &driver_attr_fake_rw.attr, | |
4751 | &driver_attr_no_lun_0.attr, | |
4752 | &driver_attr_num_tgts.attr, | |
4753 | &driver_attr_dev_size_mb.attr, | |
4754 | &driver_attr_num_parts.attr, | |
4755 | &driver_attr_every_nth.attr, | |
4756 | &driver_attr_max_luns.attr, | |
4757 | &driver_attr_max_queue.attr, | |
4758 | &driver_attr_no_uld.attr, | |
4759 | &driver_attr_scsi_level.attr, | |
4760 | &driver_attr_virtual_gb.attr, | |
4761 | &driver_attr_add_host.attr, | |
4762 | &driver_attr_vpd_use_hostno.attr, | |
4763 | &driver_attr_sector_size.attr, | |
4764 | &driver_attr_dix.attr, | |
4765 | &driver_attr_dif.attr, | |
4766 | &driver_attr_guard.attr, | |
4767 | &driver_attr_ato.attr, | |
4768 | &driver_attr_map.attr, | |
4769 | &driver_attr_removable.attr, | |
cbf67842 DG |
4770 | &driver_attr_host_lock.attr, |
4771 | &driver_attr_ndelay.attr, | |
c2248fc9 | 4772 | &driver_attr_strict.attr, |
82069379 AM |
4773 | NULL, |
4774 | }; | |
4775 | ATTRIBUTE_GROUPS(sdebug_drv); | |
1da177e4 | 4776 | |
11ddceca | 4777 | static struct device *pseudo_primary; |
8dea0d02 | 4778 | |
1da177e4 LT |
4779 | static int __init scsi_debug_init(void) |
4780 | { | |
5f2578e5 | 4781 | unsigned long sz; |
1da177e4 LT |
4782 | int host_to_add; |
4783 | int k; | |
6ecaff7f | 4784 | int ret; |
1da177e4 | 4785 | |
cbf67842 DG |
4786 | atomic_set(&sdebug_cmnd_count, 0); |
4787 | atomic_set(&sdebug_completions, 0); | |
4788 | atomic_set(&retired_max_queue, 0); | |
4789 | ||
4790 | if (scsi_debug_ndelay >= 1000000000) { | |
4791 | pr_warn("%s: ndelay must be less than 1 second, ignored\n", | |
4792 | __func__); | |
4793 | scsi_debug_ndelay = 0; | |
4794 | } else if (scsi_debug_ndelay > 0) | |
4795 | scsi_debug_delay = DELAY_OVERRIDDEN; | |
4796 | ||
597136ab MP |
4797 | switch (scsi_debug_sector_size) { |
4798 | case 512: | |
4799 | case 1024: | |
4800 | case 2048: | |
4801 | case 4096: | |
4802 | break; | |
4803 | default: | |
cbf67842 | 4804 | pr_err("%s: invalid sector_size %d\n", __func__, |
597136ab MP |
4805 | scsi_debug_sector_size); |
4806 | return -EINVAL; | |
4807 | } | |
4808 | ||
c6a44287 MP |
4809 | switch (scsi_debug_dif) { |
4810 | ||
4811 | case SD_DIF_TYPE0_PROTECTION: | |
4812 | case SD_DIF_TYPE1_PROTECTION: | |
395cef03 | 4813 | case SD_DIF_TYPE2_PROTECTION: |
c6a44287 MP |
4814 | case SD_DIF_TYPE3_PROTECTION: |
4815 | break; | |
4816 | ||
4817 | default: | |
cbf67842 | 4818 | pr_err("%s: dif must be 0, 1, 2 or 3\n", __func__); |
c6a44287 MP |
4819 | return -EINVAL; |
4820 | } | |
4821 | ||
4822 | if (scsi_debug_guard > 1) { | |
cbf67842 | 4823 | pr_err("%s: guard must be 0 or 1\n", __func__); |
c6a44287 MP |
4824 | return -EINVAL; |
4825 | } | |
4826 | ||
4827 | if (scsi_debug_ato > 1) { | |
cbf67842 | 4828 | pr_err("%s: ato must be 0 or 1\n", __func__); |
c6a44287 MP |
4829 | return -EINVAL; |
4830 | } | |
4831 | ||
ea61fca5 | 4832 | if (scsi_debug_physblk_exp > 15) { |
cbf67842 | 4833 | pr_err("%s: invalid physblk_exp %u\n", __func__, |
ea61fca5 MP |
4834 | scsi_debug_physblk_exp); |
4835 | return -EINVAL; | |
4836 | } | |
4837 | ||
4838 | if (scsi_debug_lowest_aligned > 0x3fff) { | |
cbf67842 | 4839 | pr_err("%s: lowest_aligned too big: %u\n", __func__, |
ea61fca5 MP |
4840 | scsi_debug_lowest_aligned); |
4841 | return -EINVAL; | |
4842 | } | |
4843 | ||
1da177e4 LT |
4844 | if (scsi_debug_dev_size_mb < 1) |
4845 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ | |
5f2578e5 | 4846 | sz = (unsigned long)scsi_debug_dev_size_mb * 1048576; |
597136ab | 4847 | sdebug_store_sectors = sz / scsi_debug_sector_size; |
28898873 | 4848 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 LT |
4849 | |
4850 | /* play around with geometry, don't waste too much on track 0 */ | |
4851 | sdebug_heads = 8; | |
4852 | sdebug_sectors_per = 32; | |
4853 | if (scsi_debug_dev_size_mb >= 16) | |
4854 | sdebug_heads = 32; | |
4855 | else if (scsi_debug_dev_size_mb >= 256) | |
4856 | sdebug_heads = 64; | |
4857 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
4858 | (sdebug_sectors_per * sdebug_heads); | |
4859 | if (sdebug_cylinders_per >= 1024) { | |
4860 | /* other LLDs do this; implies >= 1GB ram disk ... */ | |
4861 | sdebug_heads = 255; | |
4862 | sdebug_sectors_per = 63; | |
4863 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
4864 | (sdebug_sectors_per * sdebug_heads); | |
4865 | } | |
4866 | ||
cbf67842 DG |
4867 | if (0 == scsi_debug_fake_rw) { |
4868 | fake_storep = vmalloc(sz); | |
4869 | if (NULL == fake_storep) { | |
4870 | pr_err("%s: out of memory, 1\n", __func__); | |
4871 | return -ENOMEM; | |
4872 | } | |
4873 | memset(fake_storep, 0, sz); | |
4874 | if (scsi_debug_num_parts > 0) | |
4875 | sdebug_build_parts(fake_storep, sz); | |
1da177e4 | 4876 | } |
1da177e4 | 4877 | |
7cb69d03 | 4878 | if (scsi_debug_dix) { |
c6a44287 MP |
4879 | int dif_size; |
4880 | ||
4881 | dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple); | |
4882 | dif_storep = vmalloc(dif_size); | |
4883 | ||
cbf67842 DG |
4884 | pr_err("%s: dif_storep %u bytes @ %p\n", __func__, dif_size, |
4885 | dif_storep); | |
c6a44287 MP |
4886 | |
4887 | if (dif_storep == NULL) { | |
cbf67842 | 4888 | pr_err("%s: out of mem. (DIX)\n", __func__); |
c6a44287 MP |
4889 | ret = -ENOMEM; |
4890 | goto free_vm; | |
4891 | } | |
4892 | ||
4893 | memset(dif_storep, 0xff, dif_size); | |
4894 | } | |
4895 | ||
5b94e232 MP |
4896 | /* Logical Block Provisioning */ |
4897 | if (scsi_debug_lbp()) { | |
6014759c MP |
4898 | scsi_debug_unmap_max_blocks = |
4899 | clamp(scsi_debug_unmap_max_blocks, 0U, 0xffffffffU); | |
4900 | ||
4901 | scsi_debug_unmap_max_desc = | |
4902 | clamp(scsi_debug_unmap_max_desc, 0U, 256U); | |
4903 | ||
4904 | scsi_debug_unmap_granularity = | |
4905 | clamp(scsi_debug_unmap_granularity, 1U, 0xffffffffU); | |
4906 | ||
4907 | if (scsi_debug_unmap_alignment && | |
ac17078a AM |
4908 | scsi_debug_unmap_granularity <= |
4909 | scsi_debug_unmap_alignment) { | |
cbf67842 | 4910 | pr_err("%s: ERR: unmap_granularity <= unmap_alignment\n", |
44d92694 MP |
4911 | __func__); |
4912 | return -EINVAL; | |
4913 | } | |
4914 | ||
b90ebc3d AM |
4915 | map_size = lba_to_map_index(sdebug_store_sectors - 1) + 1; |
4916 | map_storep = vmalloc(BITS_TO_LONGS(map_size) * sizeof(long)); | |
44d92694 | 4917 | |
cbf67842 | 4918 | pr_info("%s: %lu provisioning blocks\n", __func__, map_size); |
44d92694 MP |
4919 | |
4920 | if (map_storep == NULL) { | |
cbf67842 | 4921 | pr_err("%s: out of mem. (MAP)\n", __func__); |
44d92694 MP |
4922 | ret = -ENOMEM; |
4923 | goto free_vm; | |
4924 | } | |
4925 | ||
b90ebc3d | 4926 | bitmap_zero(map_storep, map_size); |
44d92694 MP |
4927 | |
4928 | /* Map first 1KB for partition table */ | |
4929 | if (scsi_debug_num_parts) | |
4930 | map_region(0, 2); | |
4931 | } | |
4932 | ||
9b906779 NB |
4933 | pseudo_primary = root_device_register("pseudo_0"); |
4934 | if (IS_ERR(pseudo_primary)) { | |
cbf67842 | 4935 | pr_warn("%s: root_device_register() error\n", __func__); |
9b906779 | 4936 | ret = PTR_ERR(pseudo_primary); |
6ecaff7f RD |
4937 | goto free_vm; |
4938 | } | |
4939 | ret = bus_register(&pseudo_lld_bus); | |
4940 | if (ret < 0) { | |
cbf67842 | 4941 | pr_warn("%s: bus_register error: %d\n", __func__, ret); |
6ecaff7f RD |
4942 | goto dev_unreg; |
4943 | } | |
4944 | ret = driver_register(&sdebug_driverfs_driver); | |
4945 | if (ret < 0) { | |
cbf67842 | 4946 | pr_warn("%s: driver_register error: %d\n", __func__, ret); |
6ecaff7f RD |
4947 | goto bus_unreg; |
4948 | } | |
1da177e4 | 4949 | |
1da177e4 LT |
4950 | host_to_add = scsi_debug_add_host; |
4951 | scsi_debug_add_host = 0; | |
4952 | ||
4953 | for (k = 0; k < host_to_add; k++) { | |
4954 | if (sdebug_add_adapter()) { | |
cbf67842 DG |
4955 | pr_err("%s: sdebug_add_adapter failed k=%d\n", |
4956 | __func__, k); | |
1da177e4 LT |
4957 | break; |
4958 | } | |
4959 | } | |
4960 | ||
4961 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
cbf67842 DG |
4962 | pr_info("%s: built %d host(s)\n", __func__, |
4963 | scsi_debug_add_host); | |
1da177e4 LT |
4964 | } |
4965 | return 0; | |
6ecaff7f | 4966 | |
6ecaff7f RD |
4967 | bus_unreg: |
4968 | bus_unregister(&pseudo_lld_bus); | |
4969 | dev_unreg: | |
9b906779 | 4970 | root_device_unregister(pseudo_primary); |
6ecaff7f | 4971 | free_vm: |
44d92694 MP |
4972 | if (map_storep) |
4973 | vfree(map_storep); | |
c6a44287 MP |
4974 | if (dif_storep) |
4975 | vfree(dif_storep); | |
6ecaff7f RD |
4976 | vfree(fake_storep); |
4977 | ||
4978 | return ret; | |
1da177e4 LT |
4979 | } |
4980 | ||
4981 | static void __exit scsi_debug_exit(void) | |
4982 | { | |
4983 | int k = scsi_debug_add_host; | |
4984 | ||
4985 | stop_all_queued(); | |
cbf67842 | 4986 | free_all_queued(); |
1da177e4 LT |
4987 | for (; k; k--) |
4988 | sdebug_remove_adapter(); | |
1da177e4 LT |
4989 | driver_unregister(&sdebug_driverfs_driver); |
4990 | bus_unregister(&pseudo_lld_bus); | |
9b906779 | 4991 | root_device_unregister(pseudo_primary); |
1da177e4 | 4992 | |
c6a44287 MP |
4993 | if (dif_storep) |
4994 | vfree(dif_storep); | |
4995 | ||
1da177e4 LT |
4996 | vfree(fake_storep); |
4997 | } | |
4998 | ||
4999 | device_initcall(scsi_debug_init); | |
5000 | module_exit(scsi_debug_exit); | |
5001 | ||
1da177e4 LT |
5002 | static void sdebug_release_adapter(struct device * dev) |
5003 | { | |
5004 | struct sdebug_host_info *sdbg_host; | |
5005 | ||
5006 | sdbg_host = to_sdebug_host(dev); | |
5007 | kfree(sdbg_host); | |
5008 | } | |
5009 | ||
5010 | static int sdebug_add_adapter(void) | |
5011 | { | |
5012 | int k, devs_per_host; | |
5013 | int error = 0; | |
5014 | struct sdebug_host_info *sdbg_host; | |
8b40228f | 5015 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 | 5016 | |
c65b1445 | 5017 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
1da177e4 LT |
5018 | if (NULL == sdbg_host) { |
5019 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
cadbd4a5 | 5020 | __func__, __LINE__); |
1da177e4 LT |
5021 | return -ENOMEM; |
5022 | } | |
5023 | ||
1da177e4 LT |
5024 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
5025 | ||
5026 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; | |
5027 | for (k = 0; k < devs_per_host; k++) { | |
5cb2fc06 FT |
5028 | sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); |
5029 | if (!sdbg_devinfo) { | |
1da177e4 | 5030 | printk(KERN_ERR "%s: out of memory at line %d\n", |
cadbd4a5 | 5031 | __func__, __LINE__); |
1da177e4 LT |
5032 | error = -ENOMEM; |
5033 | goto clean; | |
5034 | } | |
1da177e4 LT |
5035 | } |
5036 | ||
5037 | spin_lock(&sdebug_host_list_lock); | |
5038 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); | |
5039 | spin_unlock(&sdebug_host_list_lock); | |
5040 | ||
5041 | sdbg_host->dev.bus = &pseudo_lld_bus; | |
9b906779 | 5042 | sdbg_host->dev.parent = pseudo_primary; |
1da177e4 | 5043 | sdbg_host->dev.release = &sdebug_release_adapter; |
71610f55 | 5044 | dev_set_name(&sdbg_host->dev, "adapter%d", scsi_debug_add_host); |
1da177e4 LT |
5045 | |
5046 | error = device_register(&sdbg_host->dev); | |
5047 | ||
5048 | if (error) | |
5049 | goto clean; | |
5050 | ||
5051 | ++scsi_debug_add_host; | |
5052 | return error; | |
5053 | ||
5054 | clean: | |
8b40228f FT |
5055 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
5056 | dev_list) { | |
1da177e4 LT |
5057 | list_del(&sdbg_devinfo->dev_list); |
5058 | kfree(sdbg_devinfo); | |
5059 | } | |
5060 | ||
5061 | kfree(sdbg_host); | |
5062 | return error; | |
5063 | } | |
5064 | ||
5065 | static void sdebug_remove_adapter(void) | |
5066 | { | |
5067 | struct sdebug_host_info * sdbg_host = NULL; | |
5068 | ||
5069 | spin_lock(&sdebug_host_list_lock); | |
5070 | if (!list_empty(&sdebug_host_list)) { | |
5071 | sdbg_host = list_entry(sdebug_host_list.prev, | |
5072 | struct sdebug_host_info, host_list); | |
5073 | list_del(&sdbg_host->host_list); | |
5074 | } | |
5075 | spin_unlock(&sdebug_host_list_lock); | |
5076 | ||
5077 | if (!sdbg_host) | |
5078 | return; | |
5079 | ||
5080 | device_unregister(&sdbg_host->dev); | |
5081 | --scsi_debug_add_host; | |
5082 | } | |
5083 | ||
cbf67842 | 5084 | static int |
db5ed4df | 5085 | sdebug_change_qdepth(struct scsi_device *sdev, int qdepth) |
cbf67842 DG |
5086 | { |
5087 | int num_in_q = 0; | |
cbf67842 DG |
5088 | unsigned long iflags; |
5089 | struct sdebug_dev_info *devip; | |
5090 | ||
5091 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
5092 | devip = (struct sdebug_dev_info *)sdev->hostdata; | |
5093 | if (NULL == devip) { | |
5094 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
5095 | return -ENODEV; | |
5096 | } | |
5097 | num_in_q = atomic_read(&devip->num_in_q); | |
5098 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
c40ecc12 CH |
5099 | |
5100 | if (qdepth < 1) | |
5101 | qdepth = 1; | |
5102 | /* allow to exceed max host queued_arr elements for testing */ | |
5103 | if (qdepth > SCSI_DEBUG_CANQUEUE + 10) | |
5104 | qdepth = SCSI_DEBUG_CANQUEUE + 10; | |
db5ed4df | 5105 | scsi_change_queue_depth(sdev, qdepth); |
c40ecc12 | 5106 | |
cbf67842 | 5107 | if (SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) { |
c40ecc12 CH |
5108 | sdev_printk(KERN_INFO, sdev, |
5109 | "%s: qdepth=%d, num_in_q=%d\n", | |
5110 | __func__, qdepth, num_in_q); | |
cbf67842 DG |
5111 | } |
5112 | return sdev->queue_depth; | |
5113 | } | |
5114 | ||
817fd66b DG |
5115 | static int |
5116 | check_inject(struct scsi_cmnd *scp) | |
5117 | { | |
5118 | struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp); | |
5119 | ||
5120 | memset(ep, 0, sizeof(struct sdebug_scmd_extra_t)); | |
5121 | ||
5122 | if (atomic_inc_return(&sdebug_cmnd_count) >= | |
5123 | abs(scsi_debug_every_nth)) { | |
5124 | atomic_set(&sdebug_cmnd_count, 0); | |
5125 | if (scsi_debug_every_nth < -1) | |
5126 | scsi_debug_every_nth = -1; | |
5127 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) | |
5128 | return 1; /* ignore command causing timeout */ | |
5129 | else if (SCSI_DEBUG_OPT_MAC_TIMEOUT & scsi_debug_opts && | |
5130 | scsi_medium_access_command(scp)) | |
5131 | return 1; /* time out reads and writes */ | |
5132 | if (sdebug_any_injecting_opt) { | |
5133 | int opts = scsi_debug_opts; | |
5134 | ||
5135 | if (SCSI_DEBUG_OPT_RECOVERED_ERR & opts) | |
5136 | ep->inj_recovered = true; | |
5137 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & opts) | |
5138 | ep->inj_transport = true; | |
5139 | else if (SCSI_DEBUG_OPT_DIF_ERR & opts) | |
5140 | ep->inj_dif = true; | |
5141 | else if (SCSI_DEBUG_OPT_DIX_ERR & opts) | |
5142 | ep->inj_dix = true; | |
5143 | else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & opts) | |
5144 | ep->inj_short = true; | |
5145 | } | |
5146 | } | |
5147 | return 0; | |
5148 | } | |
5149 | ||
c2248fc9 DG |
5150 | static int |
5151 | scsi_debug_queuecommand(struct scsi_cmnd *scp) | |
5152 | { | |
5153 | u8 sdeb_i; | |
5154 | struct scsi_device *sdp = scp->device; | |
5155 | const struct opcode_info_t *oip; | |
5156 | const struct opcode_info_t *r_oip; | |
5157 | struct sdebug_dev_info *devip; | |
5158 | u8 *cmd = scp->cmnd; | |
5159 | int (*r_pfp)(struct scsi_cmnd *, struct sdebug_dev_info *); | |
5160 | int k, na; | |
5161 | int errsts = 0; | |
5162 | int errsts_no_connect = DID_NO_CONNECT << 16; | |
5163 | u32 flags; | |
5164 | u16 sa; | |
5165 | u8 opcode = cmd[0]; | |
5166 | bool has_wlun_rl; | |
5167 | bool debug = !!(SCSI_DEBUG_OPT_NOISE & scsi_debug_opts); | |
5168 | ||
5169 | scsi_set_resid(scp, 0); | |
5170 | if (debug && !(SCSI_DEBUG_OPT_NO_CDB_NOISE & scsi_debug_opts)) { | |
5171 | char b[120]; | |
5172 | int n, len, sb; | |
5173 | ||
5174 | len = scp->cmd_len; | |
5175 | sb = (int)sizeof(b); | |
5176 | if (len > 32) | |
5177 | strcpy(b, "too long, over 32 bytes"); | |
5178 | else { | |
5179 | for (k = 0, n = 0; k < len && n < sb; ++k) | |
5180 | n += scnprintf(b + n, sb - n, "%02x ", | |
5181 | (u32)cmd[k]); | |
5182 | } | |
5183 | sdev_printk(KERN_INFO, sdp, "%s: cmd %s\n", my_name, b); | |
5184 | } | |
5185 | has_wlun_rl = (sdp->lun == SAM2_WLUN_REPORT_LUNS); | |
5186 | if ((sdp->lun >= scsi_debug_max_luns) && !has_wlun_rl) | |
5187 | return schedule_resp(scp, NULL, errsts_no_connect, 0); | |
5188 | ||
5189 | sdeb_i = opcode_ind_arr[opcode]; /* fully mapped */ | |
5190 | oip = &opcode_info_arr[sdeb_i]; /* safe if table consistent */ | |
5191 | devip = (struct sdebug_dev_info *)sdp->hostdata; | |
5192 | if (!devip) { | |
5193 | devip = devInfoReg(sdp); | |
5194 | if (NULL == devip) | |
5195 | return schedule_resp(scp, NULL, errsts_no_connect, 0); | |
5196 | } | |
5197 | na = oip->num_attached; | |
5198 | r_pfp = oip->pfp; | |
5199 | if (na) { /* multiple commands with this opcode */ | |
5200 | r_oip = oip; | |
5201 | if (FF_SA & r_oip->flags) { | |
5202 | if (F_SA_LOW & oip->flags) | |
5203 | sa = 0x1f & cmd[1]; | |
5204 | else | |
5205 | sa = get_unaligned_be16(cmd + 8); | |
5206 | for (k = 0; k <= na; oip = r_oip->arrp + k++) { | |
5207 | if (opcode == oip->opcode && sa == oip->sa) | |
5208 | break; | |
5209 | } | |
5210 | } else { /* since no service action only check opcode */ | |
5211 | for (k = 0; k <= na; oip = r_oip->arrp + k++) { | |
5212 | if (opcode == oip->opcode) | |
5213 | break; | |
5214 | } | |
5215 | } | |
5216 | if (k > na) { | |
5217 | if (F_SA_LOW & r_oip->flags) | |
5218 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 4); | |
5219 | else if (F_SA_HIGH & r_oip->flags) | |
5220 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 8, 7); | |
5221 | else | |
5222 | mk_sense_invalid_opcode(scp); | |
5223 | goto check_cond; | |
5224 | } | |
5225 | } /* else (when na==0) we assume the oip is a match */ | |
5226 | flags = oip->flags; | |
5227 | if (F_INV_OP & flags) { | |
5228 | mk_sense_invalid_opcode(scp); | |
5229 | goto check_cond; | |
5230 | } | |
5231 | if (has_wlun_rl && !(F_RL_WLUN_OK & flags)) { | |
5232 | if (debug) | |
5233 | sdev_printk(KERN_INFO, sdp, "scsi_debug: Opcode: " | |
5234 | "0x%x not supported for wlun\n", opcode); | |
5235 | mk_sense_invalid_opcode(scp); | |
5236 | goto check_cond; | |
5237 | } | |
5238 | if (scsi_debug_strict) { /* check cdb against mask */ | |
5239 | u8 rem; | |
5240 | int j; | |
5241 | ||
5242 | for (k = 1; k < oip->len_mask[0] && k < 16; ++k) { | |
5243 | rem = ~oip->len_mask[k] & cmd[k]; | |
5244 | if (rem) { | |
5245 | for (j = 7; j >= 0; --j, rem <<= 1) { | |
5246 | if (0x80 & rem) | |
5247 | break; | |
5248 | } | |
5249 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, k, j); | |
5250 | goto check_cond; | |
5251 | } | |
5252 | } | |
5253 | } | |
5254 | if (!(F_SKIP_UA & flags) && | |
5255 | SDEBUG_NUM_UAS != find_first_bit(devip->uas_bm, SDEBUG_NUM_UAS)) { | |
5256 | errsts = check_readiness(scp, UAS_ONLY, devip); | |
5257 | if (errsts) | |
5258 | goto check_cond; | |
5259 | } | |
5260 | if ((F_M_ACCESS & flags) && devip->stopped) { | |
5261 | mk_sense_buffer(scp, NOT_READY, LOGICAL_UNIT_NOT_READY, 0x2); | |
5262 | if (debug) | |
5263 | sdev_printk(KERN_INFO, sdp, "%s reports: Not ready: " | |
5264 | "%s\n", my_name, "initializing command " | |
5265 | "required"); | |
5266 | errsts = check_condition_result; | |
5267 | goto fini; | |
5268 | } | |
5269 | if (scsi_debug_fake_rw && (F_FAKE_RW & flags)) | |
5270 | goto fini; | |
5271 | if (scsi_debug_every_nth) { | |
5272 | if (check_inject(scp)) | |
5273 | return 0; /* ignore command: make trouble */ | |
5274 | } | |
5275 | if (oip->pfp) /* if this command has a resp_* function, call it */ | |
5276 | errsts = oip->pfp(scp, devip); | |
5277 | else if (r_pfp) /* if leaf function ptr NULL, try the root's */ | |
5278 | errsts = r_pfp(scp, devip); | |
5279 | ||
5280 | fini: | |
5281 | return schedule_resp(scp, devip, errsts, | |
5282 | ((F_DELAY_OVERR & flags) ? 0 : scsi_debug_delay)); | |
5283 | check_cond: | |
5284 | return schedule_resp(scp, devip, check_condition_result, 0); | |
5285 | } | |
5286 | ||
38d5c833 DG |
5287 | static int |
5288 | sdebug_queuecommand_lock_or_not(struct Scsi_Host *shost, struct scsi_cmnd *cmd) | |
5289 | { | |
5290 | if (scsi_debug_host_lock) { | |
5291 | unsigned long iflags; | |
5292 | int rc; | |
5293 | ||
5294 | spin_lock_irqsave(shost->host_lock, iflags); | |
5295 | rc = scsi_debug_queuecommand(cmd); | |
5296 | spin_unlock_irqrestore(shost->host_lock, iflags); | |
5297 | return rc; | |
5298 | } else | |
5299 | return scsi_debug_queuecommand(cmd); | |
5300 | } | |
5301 | ||
9e603ca0 | 5302 | static struct scsi_host_template sdebug_driver_template = { |
c8ed555a AV |
5303 | .show_info = scsi_debug_show_info, |
5304 | .write_info = scsi_debug_write_info, | |
9e603ca0 FT |
5305 | .proc_name = sdebug_proc_name, |
5306 | .name = "SCSI DEBUG", | |
5307 | .info = scsi_debug_info, | |
5308 | .slave_alloc = scsi_debug_slave_alloc, | |
5309 | .slave_configure = scsi_debug_slave_configure, | |
5310 | .slave_destroy = scsi_debug_slave_destroy, | |
5311 | .ioctl = scsi_debug_ioctl, | |
cbf67842 DG |
5312 | .queuecommand = sdebug_queuecommand_lock_or_not, |
5313 | .change_queue_depth = sdebug_change_qdepth, | |
9e603ca0 | 5314 | .eh_abort_handler = scsi_debug_abort, |
9e603ca0 | 5315 | .eh_device_reset_handler = scsi_debug_device_reset, |
cbf67842 DG |
5316 | .eh_target_reset_handler = scsi_debug_target_reset, |
5317 | .eh_bus_reset_handler = scsi_debug_bus_reset, | |
9e603ca0 | 5318 | .eh_host_reset_handler = scsi_debug_host_reset, |
9e603ca0 FT |
5319 | .can_queue = SCSI_DEBUG_CANQUEUE, |
5320 | .this_id = 7, | |
6bb5e6e7 | 5321 | .sg_tablesize = SCSI_MAX_SG_CHAIN_SEGMENTS, |
cbf67842 | 5322 | .cmd_per_lun = DEF_CMD_PER_LUN, |
6bb5e6e7 | 5323 | .max_sectors = -1U, |
9e603ca0 FT |
5324 | .use_clustering = DISABLE_CLUSTERING, |
5325 | .module = THIS_MODULE, | |
c40ecc12 | 5326 | .track_queue_depth = 1, |
817fd66b | 5327 | .cmd_size = sizeof(struct sdebug_scmd_extra_t), |
9e603ca0 FT |
5328 | }; |
5329 | ||
1da177e4 LT |
5330 | static int sdebug_driver_probe(struct device * dev) |
5331 | { | |
22017ed2 | 5332 | int error = 0; |
817fd66b | 5333 | int opts; |
22017ed2 DG |
5334 | struct sdebug_host_info *sdbg_host; |
5335 | struct Scsi_Host *hpnt; | |
c6a44287 | 5336 | int host_prot; |
1da177e4 LT |
5337 | |
5338 | sdbg_host = to_sdebug_host(dev); | |
5339 | ||
78d4e5a0 | 5340 | sdebug_driver_template.can_queue = scsi_debug_max_queue; |
0759c666 AM |
5341 | if (scsi_debug_clustering) |
5342 | sdebug_driver_template.use_clustering = ENABLE_CLUSTERING; | |
78d4e5a0 DG |
5343 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); |
5344 | if (NULL == hpnt) { | |
17c9ff52 | 5345 | pr_err("%s: scsi_host_alloc failed\n", __func__); |
78d4e5a0 | 5346 | error = -ENODEV; |
1da177e4 | 5347 | return error; |
78d4e5a0 | 5348 | } |
1da177e4 LT |
5349 | |
5350 | sdbg_host->shost = hpnt; | |
5351 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; | |
5352 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) | |
5353 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
5354 | else | |
5355 | hpnt->max_id = scsi_debug_num_tgts; | |
c65b1445 | 5356 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
1da177e4 | 5357 | |
c6a44287 MP |
5358 | host_prot = 0; |
5359 | ||
5360 | switch (scsi_debug_dif) { | |
5361 | ||
5362 | case SD_DIF_TYPE1_PROTECTION: | |
5363 | host_prot = SHOST_DIF_TYPE1_PROTECTION; | |
5364 | if (scsi_debug_dix) | |
5365 | host_prot |= SHOST_DIX_TYPE1_PROTECTION; | |
5366 | break; | |
5367 | ||
5368 | case SD_DIF_TYPE2_PROTECTION: | |
5369 | host_prot = SHOST_DIF_TYPE2_PROTECTION; | |
5370 | if (scsi_debug_dix) | |
5371 | host_prot |= SHOST_DIX_TYPE2_PROTECTION; | |
5372 | break; | |
5373 | ||
5374 | case SD_DIF_TYPE3_PROTECTION: | |
5375 | host_prot = SHOST_DIF_TYPE3_PROTECTION; | |
5376 | if (scsi_debug_dix) | |
5377 | host_prot |= SHOST_DIX_TYPE3_PROTECTION; | |
5378 | break; | |
5379 | ||
5380 | default: | |
5381 | if (scsi_debug_dix) | |
5382 | host_prot |= SHOST_DIX_TYPE0_PROTECTION; | |
5383 | break; | |
5384 | } | |
5385 | ||
5386 | scsi_host_set_prot(hpnt, host_prot); | |
5387 | ||
5388 | printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n", | |
5389 | (host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", | |
5390 | (host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", | |
5391 | (host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", | |
5392 | (host_prot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", | |
5393 | (host_prot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", | |
5394 | (host_prot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", | |
5395 | (host_prot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); | |
5396 | ||
5397 | if (scsi_debug_guard == 1) | |
5398 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP); | |
5399 | else | |
5400 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC); | |
5401 | ||
817fd66b DG |
5402 | opts = scsi_debug_opts; |
5403 | if (SCSI_DEBUG_OPT_RECOVERED_ERR & opts) | |
5404 | sdebug_any_injecting_opt = true; | |
5405 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & opts) | |
5406 | sdebug_any_injecting_opt = true; | |
5407 | else if (SCSI_DEBUG_OPT_DIF_ERR & opts) | |
5408 | sdebug_any_injecting_opt = true; | |
5409 | else if (SCSI_DEBUG_OPT_DIX_ERR & opts) | |
5410 | sdebug_any_injecting_opt = true; | |
5411 | else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & opts) | |
5412 | sdebug_any_injecting_opt = true; | |
5413 | ||
1da177e4 LT |
5414 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
5415 | if (error) { | |
cadbd4a5 | 5416 | printk(KERN_ERR "%s: scsi_add_host failed\n", __func__); |
1da177e4 LT |
5417 | error = -ENODEV; |
5418 | scsi_host_put(hpnt); | |
5419 | } else | |
5420 | scsi_scan_host(hpnt); | |
5421 | ||
cbf67842 | 5422 | return error; |
1da177e4 LT |
5423 | } |
5424 | ||
5425 | static int sdebug_driver_remove(struct device * dev) | |
5426 | { | |
1da177e4 | 5427 | struct sdebug_host_info *sdbg_host; |
8b40228f | 5428 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 LT |
5429 | |
5430 | sdbg_host = to_sdebug_host(dev); | |
5431 | ||
5432 | if (!sdbg_host) { | |
5433 | printk(KERN_ERR "%s: Unable to locate host info\n", | |
cadbd4a5 | 5434 | __func__); |
1da177e4 LT |
5435 | return -ENODEV; |
5436 | } | |
5437 | ||
5438 | scsi_remove_host(sdbg_host->shost); | |
5439 | ||
8b40228f FT |
5440 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
5441 | dev_list) { | |
1da177e4 LT |
5442 | list_del(&sdbg_devinfo->dev_list); |
5443 | kfree(sdbg_devinfo); | |
5444 | } | |
5445 | ||
5446 | scsi_host_put(sdbg_host->shost); | |
5447 | return 0; | |
5448 | } | |
5449 | ||
8dea0d02 FT |
5450 | static int pseudo_lld_bus_match(struct device *dev, |
5451 | struct device_driver *dev_driver) | |
1da177e4 | 5452 | { |
8dea0d02 | 5453 | return 1; |
1da177e4 | 5454 | } |
8dea0d02 FT |
5455 | |
5456 | static struct bus_type pseudo_lld_bus = { | |
5457 | .name = "pseudo", | |
5458 | .match = pseudo_lld_bus_match, | |
5459 | .probe = sdebug_driver_probe, | |
5460 | .remove = sdebug_driver_remove, | |
82069379 | 5461 | .drv_groups = sdebug_drv_groups, |
8dea0d02 | 5462 | }; |