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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 | |
cbf67842 DG |
66 | #define SCSI_DEBUG_VERSION "1.84" |
67 | static const char *scsi_debug_version_date = "20140706"; | |
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 | |
c5af0db9 | 74 | #define LOGICAL_UNIT_COMMUNICATION_FAILURE 0x8 |
1da177e4 | 75 | #define UNRECOVERED_READ_ERR 0x11 |
c65b1445 | 76 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
1da177e4 LT |
77 | #define INVALID_OPCODE 0x20 |
78 | #define ADDR_OUT_OF_RANGE 0x21 | |
395cef03 | 79 | #define INVALID_COMMAND_OPCODE 0x20 |
1da177e4 | 80 | #define INVALID_FIELD_IN_CDB 0x24 |
c65b1445 | 81 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
cbf67842 DG |
82 | #define UA_RESET_ASC 0x29 |
83 | #define UA_CHANGED_ASC 0x2a | |
84 | #define POWER_ON_RESET_ASCQ 0x0 | |
85 | #define BUS_RESET_ASCQ 0x2 /* scsi bus reset occurred */ | |
86 | #define MODE_CHANGED_ASCQ 0x1 /* mode parameters changed */ | |
1da177e4 | 87 | #define SAVING_PARAMS_UNSUP 0x39 |
6f3cbf55 | 88 | #define TRANSPORT_PROBLEM 0x4b |
c65b1445 DG |
89 | #define THRESHOLD_EXCEEDED 0x5d |
90 | #define LOW_POWER_COND_ON 0x5e | |
1da177e4 | 91 | |
6f3cbf55 DG |
92 | /* Additional Sense Code Qualifier (ASCQ) */ |
93 | #define ACK_NAK_TO 0x3 | |
94 | ||
1da177e4 LT |
95 | |
96 | /* Default values for driver parameters */ | |
97 | #define DEF_NUM_HOST 1 | |
98 | #define DEF_NUM_TGTS 1 | |
99 | #define DEF_MAX_LUNS 1 | |
100 | /* With these defaults, this driver will make 1 host with 1 target | |
101 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. | |
102 | */ | |
5b94e232 | 103 | #define DEF_ATO 1 |
cbf67842 | 104 | #define DEF_DELAY 1 /* if > 0 unit is a jiffy */ |
1da177e4 | 105 | #define DEF_DEV_SIZE_MB 8 |
5b94e232 MP |
106 | #define DEF_DIF 0 |
107 | #define DEF_DIX 0 | |
1da177e4 | 108 | #define DEF_D_SENSE 0 |
5b94e232 | 109 | #define DEF_EVERY_NTH 0 |
23183910 | 110 | #define DEF_FAKE_RW 0 |
c6a44287 | 111 | #define DEF_GUARD 0 |
cbf67842 | 112 | #define DEF_HOST_LOCK 0 |
5b94e232 MP |
113 | #define DEF_LBPU 0 |
114 | #define DEF_LBPWS 0 | |
115 | #define DEF_LBPWS10 0 | |
be1dd78d | 116 | #define DEF_LBPRZ 1 |
ea61fca5 | 117 | #define DEF_LOWEST_ALIGNED 0 |
cbf67842 | 118 | #define DEF_NDELAY 0 /* if > 0 unit is a nanosecond */ |
5b94e232 MP |
119 | #define DEF_NO_LUN_0 0 |
120 | #define DEF_NUM_PARTS 0 | |
121 | #define DEF_OPTS 0 | |
e308b3d1 | 122 | #define DEF_OPT_BLKS 64 |
5b94e232 MP |
123 | #define DEF_PHYSBLK_EXP 0 |
124 | #define DEF_PTYPE 0 | |
d986788b | 125 | #define DEF_REMOVABLE false |
e46b0344 | 126 | #define DEF_SCSI_LEVEL 6 /* INQUIRY, byte2 [6->SPC-4] */ |
5b94e232 | 127 | #define DEF_SECTOR_SIZE 512 |
cbf67842 | 128 | #define DEF_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ |
5b94e232 MP |
129 | #define DEF_UNMAP_ALIGNMENT 0 |
130 | #define DEF_UNMAP_GRANULARITY 1 | |
6014759c MP |
131 | #define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF |
132 | #define DEF_UNMAP_MAX_DESC 256 | |
5b94e232 MP |
133 | #define DEF_VIRTUAL_GB 0 |
134 | #define DEF_VPD_USE_HOSTNO 1 | |
135 | #define DEF_WRITESAME_LENGTH 0xFFFF | |
cbf67842 | 136 | #define DELAY_OVERRIDDEN -9999 |
1da177e4 LT |
137 | |
138 | /* bit mask values for scsi_debug_opts */ | |
139 | #define SCSI_DEBUG_OPT_NOISE 1 | |
140 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 | |
141 | #define SCSI_DEBUG_OPT_TIMEOUT 4 | |
142 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 | |
6f3cbf55 | 143 | #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
c6a44287 MP |
144 | #define SCSI_DEBUG_OPT_DIF_ERR 32 |
145 | #define SCSI_DEBUG_OPT_DIX_ERR 64 | |
18a4d0a2 | 146 | #define SCSI_DEBUG_OPT_MAC_TIMEOUT 128 |
cbf67842 DG |
147 | #define SCSI_DEBUG_OPT_SHORT_TRANSFER 0x100 |
148 | #define SCSI_DEBUG_OPT_Q_NOISE 0x200 | |
149 | #define SCSI_DEBUG_OPT_ALL_TSF 0x400 | |
150 | #define SCSI_DEBUG_OPT_RARE_TSF 0x800 | |
151 | #define SCSI_DEBUG_OPT_N_WCE 0x1000 | |
152 | #define SCSI_DEBUG_OPT_RESET_NOISE 0x2000 | |
153 | #define SCSI_DEBUG_OPT_NO_CDB_NOISE 0x4000 | |
154 | #define SCSI_DEBUG_OPT_ALL_NOISE (0x1 | 0x200 | 0x2000) | |
1da177e4 LT |
155 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
156 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
157 | * - a RECOVERED_ERROR is simulated on successful read and write | |
158 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
159 | * - a TRANSPORT_ERROR is simulated on successful read and write |
160 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
161 | * |
162 | * When "every_nth" < 0 then after "- 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 | * This will continue until some other action occurs (e.g. the user |
169 | * writing a new value (other than -1 or 1) to every_nth via sysfs). | |
170 | */ | |
171 | ||
cbf67842 DG |
172 | /* As indicated in SAM-5 and SPC-4 Unit Attentions (UAs)are returned in |
173 | * priority order. In the subset implemented here lower numbers have higher | |
174 | * priority. The UA numbers should be a sequence starting from 0 with | |
175 | * SDEBUG_NUM_UAS being 1 higher than the highest numbered UA. */ | |
176 | #define SDEBUG_UA_POR 0 /* Power on, reset, or bus device reset */ | |
177 | #define SDEBUG_UA_BUS_RESET 1 | |
178 | #define SDEBUG_UA_MODE_CHANGED 2 | |
179 | #define SDEBUG_NUM_UAS 3 | |
180 | ||
181 | /* for check_readiness() */ | |
182 | #define UAS_ONLY 1 | |
183 | #define UAS_TUR 0 | |
184 | ||
1da177e4 LT |
185 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this |
186 | * sector on read commands: */ | |
187 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ | |
32f7ef73 | 188 | #define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */ |
1da177e4 LT |
189 | |
190 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) | |
191 | * or "peripheral device" addressing (value 0) */ | |
192 | #define SAM2_LUN_ADDRESS_METHOD 0 | |
c65b1445 | 193 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
1da177e4 | 194 | |
cbf67842 DG |
195 | /* SCSI_DEBUG_CANQUEUE is the maximum number of commands that can be queued |
196 | * (for response) at one time. Can be reduced by max_queue option. Command | |
197 | * responses are not queued when delay=0 and ndelay=0. The per-device | |
198 | * DEF_CMD_PER_LUN can be changed via sysfs: | |
199 | * /sys/class/scsi_device/<h:c:t:l>/device/queue_depth but cannot exceed | |
200 | * SCSI_DEBUG_CANQUEUE. */ | |
201 | #define SCSI_DEBUG_CANQUEUE_WORDS 9 /* a WORD is bits in a long */ | |
202 | #define SCSI_DEBUG_CANQUEUE (SCSI_DEBUG_CANQUEUE_WORDS * BITS_PER_LONG) | |
203 | #define DEF_CMD_PER_LUN 255 | |
204 | ||
205 | #if DEF_CMD_PER_LUN > SCSI_DEBUG_CANQUEUE | |
206 | #warning "Expect DEF_CMD_PER_LUN <= SCSI_DEBUG_CANQUEUE" | |
207 | #endif | |
78d4e5a0 | 208 | |
1da177e4 | 209 | static int scsi_debug_add_host = DEF_NUM_HOST; |
5b94e232 | 210 | static int scsi_debug_ato = DEF_ATO; |
1da177e4 LT |
211 | static int scsi_debug_delay = DEF_DELAY; |
212 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; | |
5b94e232 MP |
213 | static int scsi_debug_dif = DEF_DIF; |
214 | static int scsi_debug_dix = DEF_DIX; | |
215 | static int scsi_debug_dsense = DEF_D_SENSE; | |
1da177e4 | 216 | static int scsi_debug_every_nth = DEF_EVERY_NTH; |
5b94e232 | 217 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
68aee7ba | 218 | static unsigned int scsi_debug_guard = DEF_GUARD; |
5b94e232 | 219 | static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED; |
1da177e4 | 220 | static int scsi_debug_max_luns = DEF_MAX_LUNS; |
78d4e5a0 | 221 | static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE; |
cbf67842 DG |
222 | static atomic_t retired_max_queue; /* if > 0 then was prior max_queue */ |
223 | static int scsi_debug_ndelay = DEF_NDELAY; | |
5b94e232 | 224 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
78d4e5a0 | 225 | static int scsi_debug_no_uld = 0; |
5b94e232 | 226 | static int scsi_debug_num_parts = DEF_NUM_PARTS; |
1da177e4 | 227 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ |
5b94e232 | 228 | static int scsi_debug_opt_blks = DEF_OPT_BLKS; |
1da177e4 | 229 | static int scsi_debug_opts = DEF_OPTS; |
5b94e232 | 230 | static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP; |
1da177e4 | 231 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ |
5b94e232 MP |
232 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; |
233 | static int scsi_debug_sector_size = DEF_SECTOR_SIZE; | |
c65b1445 | 234 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; |
23183910 | 235 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; |
5b94e232 MP |
236 | static unsigned int scsi_debug_lbpu = DEF_LBPU; |
237 | static unsigned int scsi_debug_lbpws = DEF_LBPWS; | |
238 | static unsigned int scsi_debug_lbpws10 = DEF_LBPWS10; | |
be1dd78d | 239 | static unsigned int scsi_debug_lbprz = DEF_LBPRZ; |
6014759c | 240 | static unsigned int scsi_debug_unmap_alignment = DEF_UNMAP_ALIGNMENT; |
5b94e232 MP |
241 | static unsigned int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY; |
242 | static unsigned int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS; | |
243 | static unsigned int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC; | |
244 | static unsigned int scsi_debug_write_same_length = DEF_WRITESAME_LENGTH; | |
d986788b | 245 | static bool scsi_debug_removable = DEF_REMOVABLE; |
0759c666 | 246 | static bool scsi_debug_clustering; |
cbf67842 | 247 | static bool scsi_debug_host_lock = DEF_HOST_LOCK; |
1da177e4 | 248 | |
cbf67842 DG |
249 | static atomic_t sdebug_cmnd_count; |
250 | static atomic_t sdebug_completions; | |
251 | static atomic_t sdebug_a_tsf; /* counter of 'almost' TSFs */ | |
1da177e4 LT |
252 | |
253 | #define DEV_READONLY(TGT) (0) | |
1da177e4 | 254 | |
c65b1445 | 255 | static unsigned int sdebug_store_sectors; |
1da177e4 LT |
256 | static sector_t sdebug_capacity; /* in sectors */ |
257 | ||
258 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages | |
259 | may still need them */ | |
260 | static int sdebug_heads; /* heads per disk */ | |
261 | static int sdebug_cylinders_per; /* cylinders per surface */ | |
262 | static int sdebug_sectors_per; /* sectors per cylinder */ | |
263 | ||
1da177e4 LT |
264 | #define SDEBUG_MAX_PARTS 4 |
265 | ||
395cef03 | 266 | #define SCSI_DEBUG_MAX_CMD_LEN 32 |
9e603ca0 | 267 | |
5b94e232 MP |
268 | static unsigned int scsi_debug_lbp(void) |
269 | { | |
cbf67842 DG |
270 | return ((0 == scsi_debug_fake_rw) && |
271 | (scsi_debug_lbpu | scsi_debug_lbpws | scsi_debug_lbpws10)); | |
5b94e232 MP |
272 | } |
273 | ||
1da177e4 LT |
274 | struct sdebug_dev_info { |
275 | struct list_head dev_list; | |
1da177e4 LT |
276 | unsigned int channel; |
277 | unsigned int target; | |
9cb78c16 | 278 | u64 lun; |
1da177e4 | 279 | struct sdebug_host_info *sdbg_host; |
9cb78c16 | 280 | u64 wlun; |
cbf67842 DG |
281 | unsigned long uas_bm[1]; |
282 | atomic_t num_in_q; | |
c65b1445 | 283 | char stopped; |
1da177e4 LT |
284 | char used; |
285 | }; | |
286 | ||
287 | struct sdebug_host_info { | |
288 | struct list_head host_list; | |
289 | struct Scsi_Host *shost; | |
290 | struct device dev; | |
291 | struct list_head dev_info_list; | |
292 | }; | |
293 | ||
294 | #define to_sdebug_host(d) \ | |
295 | container_of(d, struct sdebug_host_info, dev) | |
296 | ||
297 | static LIST_HEAD(sdebug_host_list); | |
298 | static DEFINE_SPINLOCK(sdebug_host_list_lock); | |
299 | ||
cbf67842 DG |
300 | |
301 | struct sdebug_hrtimer { /* ... is derived from hrtimer */ | |
302 | struct hrtimer hrt; /* must be first element */ | |
303 | int qa_indx; | |
304 | }; | |
1da177e4 LT |
305 | |
306 | struct sdebug_queued_cmd { | |
cbf67842 DG |
307 | /* in_use flagged by a bit in queued_in_use_bm[] */ |
308 | struct timer_list *cmnd_timerp; | |
309 | struct tasklet_struct *tletp; | |
310 | struct sdebug_hrtimer *sd_hrtp; | |
1da177e4 | 311 | struct scsi_cmnd * a_cmnd; |
1da177e4 LT |
312 | }; |
313 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; | |
cbf67842 DG |
314 | static unsigned long queued_in_use_bm[SCSI_DEBUG_CANQUEUE_WORDS]; |
315 | ||
1da177e4 | 316 | |
1da177e4 | 317 | static unsigned char * fake_storep; /* ramdisk storage */ |
e18d8bea | 318 | static struct sd_dif_tuple *dif_storep; /* protection info */ |
44d92694 | 319 | static void *map_storep; /* provisioning map */ |
1da177e4 | 320 | |
44d92694 | 321 | static unsigned long map_size; |
cbf67842 DG |
322 | static int num_aborts; |
323 | static int num_dev_resets; | |
324 | static int num_target_resets; | |
325 | static int num_bus_resets; | |
326 | static int num_host_resets; | |
c6a44287 MP |
327 | static int dix_writes; |
328 | static int dix_reads; | |
329 | static int dif_errors; | |
1da177e4 LT |
330 | |
331 | static DEFINE_SPINLOCK(queued_arr_lock); | |
332 | static DEFINE_RWLOCK(atomic_rw); | |
333 | ||
cbf67842 DG |
334 | static char sdebug_proc_name[] = MY_NAME; |
335 | static const char *my_name = MY_NAME; | |
1da177e4 | 336 | |
1da177e4 LT |
337 | static struct bus_type pseudo_lld_bus; |
338 | ||
339 | static struct device_driver sdebug_driverfs_driver = { | |
340 | .name = sdebug_proc_name, | |
341 | .bus = &pseudo_lld_bus, | |
1da177e4 LT |
342 | }; |
343 | ||
344 | static const int check_condition_result = | |
345 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | |
346 | ||
c6a44287 MP |
347 | static const int illegal_condition_result = |
348 | (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; | |
349 | ||
cbf67842 DG |
350 | static const int device_qfull_result = |
351 | (DID_OK << 16) | (COMMAND_COMPLETE << 8) | SAM_STAT_TASK_SET_FULL; | |
352 | ||
353 | static unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
354 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, | |
355 | 0, 0, 0, 0}; | |
c65b1445 DG |
356 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
357 | 0, 0, 0x2, 0x4b}; | |
358 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
359 | 0, 0, 0x0, 0x0}; | |
360 | ||
14faa944 AM |
361 | static void *fake_store(unsigned long long lba) |
362 | { | |
363 | lba = do_div(lba, sdebug_store_sectors); | |
364 | ||
365 | return fake_storep + lba * scsi_debug_sector_size; | |
366 | } | |
367 | ||
368 | static struct sd_dif_tuple *dif_store(sector_t sector) | |
369 | { | |
370 | sector = do_div(sector, sdebug_store_sectors); | |
371 | ||
372 | return dif_storep + sector; | |
373 | } | |
374 | ||
1da177e4 LT |
375 | static int sdebug_add_adapter(void); |
376 | static void sdebug_remove_adapter(void); | |
1da177e4 | 377 | |
8dea0d02 FT |
378 | static void sdebug_max_tgts_luns(void) |
379 | { | |
380 | struct sdebug_host_info *sdbg_host; | |
381 | struct Scsi_Host *hpnt; | |
382 | ||
383 | spin_lock(&sdebug_host_list_lock); | |
384 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
385 | hpnt = sdbg_host->shost; | |
386 | if ((hpnt->this_id >= 0) && | |
387 | (scsi_debug_num_tgts > hpnt->this_id)) | |
388 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
389 | else | |
390 | hpnt->max_id = scsi_debug_num_tgts; | |
391 | /* scsi_debug_max_luns; */ | |
392 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; | |
393 | } | |
394 | spin_unlock(&sdebug_host_list_lock); | |
395 | } | |
396 | ||
cbf67842 | 397 | static void mk_sense_buffer(struct scsi_cmnd *scp, int key, int asc, int asq) |
8dea0d02 FT |
398 | { |
399 | unsigned char *sbuff; | |
400 | ||
cbf67842 DG |
401 | sbuff = scp->sense_buffer; |
402 | if (!sbuff) { | |
403 | sdev_printk(KERN_ERR, scp->device, | |
404 | "%s: sense_buffer is NULL\n", __func__); | |
405 | return; | |
406 | } | |
407 | memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); | |
8dea0d02 FT |
408 | |
409 | scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); | |
410 | ||
411 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
cbf67842 DG |
412 | sdev_printk(KERN_INFO, scp->device, |
413 | "%s: [sense_key,asc,ascq]: [0x%x,0x%x,0x%x]\n", | |
414 | my_name, key, asc, asq); | |
8dea0d02 | 415 | } |
1da177e4 | 416 | |
3de9f944 | 417 | static void get_data_transfer_info(unsigned char *cmd, |
395cef03 MP |
418 | unsigned long long *lba, unsigned int *num, |
419 | u32 *ei_lba) | |
3de9f944 | 420 | { |
395cef03 MP |
421 | *ei_lba = 0; |
422 | ||
3de9f944 | 423 | switch (*cmd) { |
395cef03 MP |
424 | case VARIABLE_LENGTH_CMD: |
425 | *lba = (u64)cmd[19] | (u64)cmd[18] << 8 | | |
426 | (u64)cmd[17] << 16 | (u64)cmd[16] << 24 | | |
427 | (u64)cmd[15] << 32 | (u64)cmd[14] << 40 | | |
428 | (u64)cmd[13] << 48 | (u64)cmd[12] << 56; | |
429 | ||
430 | *ei_lba = (u32)cmd[23] | (u32)cmd[22] << 8 | | |
431 | (u32)cmd[21] << 16 | (u32)cmd[20] << 24; | |
432 | ||
433 | *num = (u32)cmd[31] | (u32)cmd[30] << 8 | (u32)cmd[29] << 16 | | |
434 | (u32)cmd[28] << 24; | |
435 | break; | |
436 | ||
44d92694 | 437 | case WRITE_SAME_16: |
3de9f944 FT |
438 | case WRITE_16: |
439 | case READ_16: | |
d5cdc989 FT |
440 | *lba = (u64)cmd[9] | (u64)cmd[8] << 8 | |
441 | (u64)cmd[7] << 16 | (u64)cmd[6] << 24 | | |
442 | (u64)cmd[5] << 32 | (u64)cmd[4] << 40 | | |
443 | (u64)cmd[3] << 48 | (u64)cmd[2] << 56; | |
444 | ||
445 | *num = (u32)cmd[13] | (u32)cmd[12] << 8 | (u32)cmd[11] << 16 | | |
446 | (u32)cmd[10] << 24; | |
3de9f944 FT |
447 | break; |
448 | case WRITE_12: | |
449 | case READ_12: | |
d5cdc989 FT |
450 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
451 | (u32)cmd[2] << 24; | |
452 | ||
453 | *num = (u32)cmd[9] | (u32)cmd[8] << 8 | (u32)cmd[7] << 16 | | |
454 | (u32)cmd[6] << 24; | |
3de9f944 | 455 | break; |
44d92694 | 456 | case WRITE_SAME: |
3de9f944 FT |
457 | case WRITE_10: |
458 | case READ_10: | |
c639d14e | 459 | case XDWRITEREAD_10: |
d5cdc989 FT |
460 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
461 | (u32)cmd[2] << 24; | |
462 | ||
463 | *num = (u32)cmd[8] | (u32)cmd[7] << 8; | |
3de9f944 FT |
464 | break; |
465 | case WRITE_6: | |
466 | case READ_6: | |
d5cdc989 FT |
467 | *lba = (u32)cmd[3] | (u32)cmd[2] << 8 | |
468 | (u32)(cmd[1] & 0x1f) << 16; | |
3de9f944 FT |
469 | *num = (0 == cmd[4]) ? 256 : cmd[4]; |
470 | break; | |
471 | default: | |
472 | break; | |
473 | } | |
474 | } | |
1da177e4 | 475 | |
1da177e4 LT |
476 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
477 | { | |
478 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
cbf67842 DG |
479 | if (0x1261 == cmd) |
480 | sdev_printk(KERN_INFO, dev, | |
481 | "%s: BLKFLSBUF [0x1261]\n", __func__); | |
482 | else if (0x5331 == cmd) | |
483 | sdev_printk(KERN_INFO, dev, | |
484 | "%s: CDROM_GET_CAPABILITY [0x5331]\n", | |
485 | __func__); | |
486 | else | |
487 | sdev_printk(KERN_INFO, dev, "%s: cmd=0x%x\n", | |
488 | __func__, cmd); | |
1da177e4 LT |
489 | } |
490 | return -EINVAL; | |
491 | /* return -ENOTTY; // correct return but upsets fdisk */ | |
492 | } | |
493 | ||
cbf67842 | 494 | static int check_readiness(struct scsi_cmnd *SCpnt, int uas_only, |
c65b1445 | 495 | struct sdebug_dev_info * devip) |
1da177e4 | 496 | { |
cbf67842 DG |
497 | int k; |
498 | bool debug = !!(SCSI_DEBUG_OPT_NOISE & scsi_debug_opts); | |
499 | ||
500 | k = find_first_bit(devip->uas_bm, SDEBUG_NUM_UAS); | |
501 | if (k != SDEBUG_NUM_UAS) { | |
502 | const char *cp = NULL; | |
503 | ||
504 | switch (k) { | |
505 | case SDEBUG_UA_POR: | |
506 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
507 | UA_RESET_ASC, POWER_ON_RESET_ASCQ); | |
508 | if (debug) | |
509 | cp = "power on reset"; | |
510 | break; | |
511 | case SDEBUG_UA_BUS_RESET: | |
512 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
513 | UA_RESET_ASC, BUS_RESET_ASCQ); | |
514 | if (debug) | |
515 | cp = "bus reset"; | |
516 | break; | |
517 | case SDEBUG_UA_MODE_CHANGED: | |
518 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, | |
519 | UA_CHANGED_ASC, MODE_CHANGED_ASCQ); | |
520 | if (debug) | |
521 | cp = "mode parameters changed"; | |
522 | break; | |
523 | default: | |
524 | pr_warn("%s: unexpected unit attention code=%d\n", | |
525 | __func__, k); | |
526 | if (debug) | |
527 | cp = "unknown"; | |
528 | break; | |
529 | } | |
530 | clear_bit(k, devip->uas_bm); | |
531 | if (debug) | |
532 | sdev_printk(KERN_INFO, SCpnt->device, | |
533 | "%s reports: Unit attention: %s\n", | |
534 | my_name, cp); | |
1da177e4 LT |
535 | return check_condition_result; |
536 | } | |
cbf67842 DG |
537 | if ((UAS_TUR == uas_only) && devip->stopped) { |
538 | mk_sense_buffer(SCpnt, NOT_READY, LOGICAL_UNIT_NOT_READY, | |
c65b1445 | 539 | 0x2); |
cbf67842 DG |
540 | if (debug) |
541 | sdev_printk(KERN_INFO, SCpnt->device, | |
542 | "%s reports: Not ready: %s\n", my_name, | |
543 | "initializing command required"); | |
c65b1445 DG |
544 | return check_condition_result; |
545 | } | |
1da177e4 LT |
546 | return 0; |
547 | } | |
548 | ||
549 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ | |
21a61829 | 550 | static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
1da177e4 LT |
551 | int arr_len) |
552 | { | |
21a61829 | 553 | int act_len; |
072d0bb3 | 554 | struct scsi_data_buffer *sdb = scsi_in(scp); |
1da177e4 | 555 | |
072d0bb3 | 556 | if (!sdb->length) |
1da177e4 | 557 | return 0; |
072d0bb3 | 558 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
1da177e4 | 559 | return (DID_ERROR << 16); |
21a61829 FT |
560 | |
561 | act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, | |
562 | arr, arr_len); | |
a4517511 | 563 | sdb->resid = scsi_bufflen(scp) - act_len; |
21a61829 | 564 | |
1da177e4 LT |
565 | return 0; |
566 | } | |
567 | ||
568 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ | |
21a61829 FT |
569 | static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
570 | int arr_len) | |
1da177e4 | 571 | { |
21a61829 | 572 | if (!scsi_bufflen(scp)) |
1da177e4 | 573 | return 0; |
072d0bb3 | 574 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
1da177e4 | 575 | return -1; |
21a61829 FT |
576 | |
577 | return scsi_sg_copy_to_buffer(scp, arr, arr_len); | |
1da177e4 LT |
578 | } |
579 | ||
580 | ||
581 | static const char * inq_vendor_id = "Linux "; | |
582 | static const char * inq_product_id = "scsi_debug "; | |
cbf67842 | 583 | static const char *inq_product_rev = "0184"; /* version less '.' */ |
1da177e4 | 584 | |
cbf67842 | 585 | /* Device identification VPD page. Returns number of bytes placed in arr */ |
5a09e398 HR |
586 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
587 | int target_dev_id, int dev_id_num, | |
588 | const char * dev_id_str, | |
c65b1445 | 589 | int dev_id_str_len) |
1da177e4 | 590 | { |
c65b1445 DG |
591 | int num, port_a; |
592 | char b[32]; | |
1da177e4 | 593 | |
c65b1445 | 594 | port_a = target_dev_id + 1; |
1da177e4 LT |
595 | /* T10 vendor identifier field format (faked) */ |
596 | arr[0] = 0x2; /* ASCII */ | |
597 | arr[1] = 0x1; | |
598 | arr[2] = 0x0; | |
599 | memcpy(&arr[4], inq_vendor_id, 8); | |
600 | memcpy(&arr[12], inq_product_id, 16); | |
601 | memcpy(&arr[28], dev_id_str, dev_id_str_len); | |
602 | num = 8 + 16 + dev_id_str_len; | |
603 | arr[3] = num; | |
604 | num += 4; | |
c65b1445 DG |
605 | if (dev_id_num >= 0) { |
606 | /* NAA-5, Logical unit identifier (binary) */ | |
607 | arr[num++] = 0x1; /* binary (not necessarily sas) */ | |
608 | arr[num++] = 0x3; /* PIV=0, lu, naa */ | |
609 | arr[num++] = 0x0; | |
610 | arr[num++] = 0x8; | |
611 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ | |
612 | arr[num++] = 0x33; | |
613 | arr[num++] = 0x33; | |
614 | arr[num++] = 0x30; | |
615 | arr[num++] = (dev_id_num >> 24); | |
616 | arr[num++] = (dev_id_num >> 16) & 0xff; | |
617 | arr[num++] = (dev_id_num >> 8) & 0xff; | |
618 | arr[num++] = dev_id_num & 0xff; | |
619 | /* Target relative port number */ | |
620 | arr[num++] = 0x61; /* proto=sas, binary */ | |
621 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ | |
622 | arr[num++] = 0x0; /* reserved */ | |
623 | arr[num++] = 0x4; /* length */ | |
624 | arr[num++] = 0x0; /* reserved */ | |
625 | arr[num++] = 0x0; /* reserved */ | |
626 | arr[num++] = 0x0; | |
627 | arr[num++] = 0x1; /* relative port A */ | |
628 | } | |
629 | /* NAA-5, Target port identifier */ | |
630 | arr[num++] = 0x61; /* proto=sas, binary */ | |
631 | arr[num++] = 0x93; /* piv=1, target port, naa */ | |
632 | arr[num++] = 0x0; | |
633 | arr[num++] = 0x8; | |
634 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
635 | arr[num++] = 0x22; | |
636 | arr[num++] = 0x22; | |
637 | arr[num++] = 0x20; | |
638 | arr[num++] = (port_a >> 24); | |
639 | arr[num++] = (port_a >> 16) & 0xff; | |
640 | arr[num++] = (port_a >> 8) & 0xff; | |
641 | arr[num++] = port_a & 0xff; | |
5a09e398 HR |
642 | /* NAA-5, Target port group identifier */ |
643 | arr[num++] = 0x61; /* proto=sas, binary */ | |
644 | arr[num++] = 0x95; /* piv=1, target port group id */ | |
645 | arr[num++] = 0x0; | |
646 | arr[num++] = 0x4; | |
647 | arr[num++] = 0; | |
648 | arr[num++] = 0; | |
649 | arr[num++] = (port_group_id >> 8) & 0xff; | |
650 | arr[num++] = port_group_id & 0xff; | |
c65b1445 DG |
651 | /* NAA-5, Target device identifier */ |
652 | arr[num++] = 0x61; /* proto=sas, binary */ | |
653 | arr[num++] = 0xa3; /* piv=1, target device, naa */ | |
654 | arr[num++] = 0x0; | |
655 | arr[num++] = 0x8; | |
656 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
657 | arr[num++] = 0x22; | |
658 | arr[num++] = 0x22; | |
659 | arr[num++] = 0x20; | |
660 | arr[num++] = (target_dev_id >> 24); | |
661 | arr[num++] = (target_dev_id >> 16) & 0xff; | |
662 | arr[num++] = (target_dev_id >> 8) & 0xff; | |
663 | arr[num++] = target_dev_id & 0xff; | |
664 | /* SCSI name string: Target device identifier */ | |
665 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ | |
666 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ | |
667 | arr[num++] = 0x0; | |
668 | arr[num++] = 24; | |
669 | memcpy(arr + num, "naa.52222220", 12); | |
670 | num += 12; | |
671 | snprintf(b, sizeof(b), "%08X", target_dev_id); | |
672 | memcpy(arr + num, b, 8); | |
673 | num += 8; | |
674 | memset(arr + num, 0, 4); | |
675 | num += 4; | |
676 | return num; | |
677 | } | |
678 | ||
679 | ||
680 | static unsigned char vpd84_data[] = { | |
681 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, | |
682 | 0x22,0x22,0x22,0x0,0xbb,0x1, | |
683 | 0x22,0x22,0x22,0x0,0xbb,0x2, | |
684 | }; | |
685 | ||
cbf67842 | 686 | /* Software interface identification VPD page */ |
c65b1445 DG |
687 | static int inquiry_evpd_84(unsigned char * arr) |
688 | { | |
689 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); | |
690 | return sizeof(vpd84_data); | |
691 | } | |
692 | ||
cbf67842 | 693 | /* Management network addresses VPD page */ |
c65b1445 DG |
694 | static int inquiry_evpd_85(unsigned char * arr) |
695 | { | |
696 | int num = 0; | |
697 | const char * na1 = "https://www.kernel.org/config"; | |
698 | const char * na2 = "http://www.kernel.org/log"; | |
699 | int plen, olen; | |
700 | ||
701 | arr[num++] = 0x1; /* lu, storage config */ | |
702 | arr[num++] = 0x0; /* reserved */ | |
703 | arr[num++] = 0x0; | |
704 | olen = strlen(na1); | |
705 | plen = olen + 1; | |
706 | if (plen % 4) | |
707 | plen = ((plen / 4) + 1) * 4; | |
708 | arr[num++] = plen; /* length, null termianted, padded */ | |
709 | memcpy(arr + num, na1, olen); | |
710 | memset(arr + num + olen, 0, plen - olen); | |
711 | num += plen; | |
712 | ||
713 | arr[num++] = 0x4; /* lu, logging */ | |
714 | arr[num++] = 0x0; /* reserved */ | |
715 | arr[num++] = 0x0; | |
716 | olen = strlen(na2); | |
717 | plen = olen + 1; | |
718 | if (plen % 4) | |
719 | plen = ((plen / 4) + 1) * 4; | |
720 | arr[num++] = plen; /* length, null terminated, padded */ | |
721 | memcpy(arr + num, na2, olen); | |
722 | memset(arr + num + olen, 0, plen - olen); | |
723 | num += plen; | |
724 | ||
725 | return num; | |
726 | } | |
727 | ||
728 | /* SCSI ports VPD page */ | |
729 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) | |
730 | { | |
731 | int num = 0; | |
732 | int port_a, port_b; | |
733 | ||
734 | port_a = target_dev_id + 1; | |
735 | port_b = port_a + 1; | |
736 | arr[num++] = 0x0; /* reserved */ | |
737 | arr[num++] = 0x0; /* reserved */ | |
738 | arr[num++] = 0x0; | |
739 | arr[num++] = 0x1; /* relative port 1 (primary) */ | |
740 | memset(arr + num, 0, 6); | |
741 | num += 6; | |
742 | arr[num++] = 0x0; | |
743 | arr[num++] = 12; /* length tp descriptor */ | |
744 | /* naa-5 target port identifier (A) */ | |
745 | arr[num++] = 0x61; /* proto=sas, binary */ | |
746 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
747 | arr[num++] = 0x0; /* reserved */ | |
748 | arr[num++] = 0x8; /* length */ | |
749 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
750 | arr[num++] = 0x22; | |
751 | arr[num++] = 0x22; | |
752 | arr[num++] = 0x20; | |
753 | arr[num++] = (port_a >> 24); | |
754 | arr[num++] = (port_a >> 16) & 0xff; | |
755 | arr[num++] = (port_a >> 8) & 0xff; | |
756 | arr[num++] = port_a & 0xff; | |
757 | ||
758 | arr[num++] = 0x0; /* reserved */ | |
759 | arr[num++] = 0x0; /* reserved */ | |
760 | arr[num++] = 0x0; | |
761 | arr[num++] = 0x2; /* relative port 2 (secondary) */ | |
762 | memset(arr + num, 0, 6); | |
763 | num += 6; | |
764 | arr[num++] = 0x0; | |
765 | arr[num++] = 12; /* length tp descriptor */ | |
766 | /* naa-5 target port identifier (B) */ | |
767 | arr[num++] = 0x61; /* proto=sas, binary */ | |
768 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
769 | arr[num++] = 0x0; /* reserved */ | |
770 | arr[num++] = 0x8; /* length */ | |
771 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
772 | arr[num++] = 0x22; | |
773 | arr[num++] = 0x22; | |
774 | arr[num++] = 0x20; | |
775 | arr[num++] = (port_b >> 24); | |
776 | arr[num++] = (port_b >> 16) & 0xff; | |
777 | arr[num++] = (port_b >> 8) & 0xff; | |
778 | arr[num++] = port_b & 0xff; | |
779 | ||
780 | return num; | |
781 | } | |
782 | ||
783 | ||
784 | static unsigned char vpd89_data[] = { | |
785 | /* from 4th byte */ 0,0,0,0, | |
786 | 'l','i','n','u','x',' ',' ',' ', | |
787 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', | |
788 | '1','2','3','4', | |
789 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, | |
790 | 0xec,0,0,0, | |
791 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, | |
792 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, | |
793 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, | |
794 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, | |
795 | 0x53,0x41, | |
796 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
797 | 0x20,0x20, | |
798 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
799 | 0x10,0x80, | |
800 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, | |
801 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, | |
802 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, | |
803 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, | |
804 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, | |
805 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, | |
806 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, | |
807 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
808 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
809 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
810 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, | |
811 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, | |
812 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, | |
813 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, | |
814 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
815 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
816 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
817 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
818 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
819 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
820 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
821 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
822 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
823 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
824 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
825 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, | |
826 | }; | |
827 | ||
cbf67842 | 828 | /* ATA Information VPD page */ |
c65b1445 DG |
829 | static int inquiry_evpd_89(unsigned char * arr) |
830 | { | |
831 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); | |
832 | return sizeof(vpd89_data); | |
833 | } | |
834 | ||
835 | ||
836 | static unsigned char vpdb0_data[] = { | |
1e49f785 DG |
837 | /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64, |
838 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
839 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
840 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
c65b1445 DG |
841 | }; |
842 | ||
cbf67842 | 843 | /* Block limits VPD page (SBC-3) */ |
c65b1445 DG |
844 | static int inquiry_evpd_b0(unsigned char * arr) |
845 | { | |
ea61fca5 MP |
846 | unsigned int gran; |
847 | ||
c65b1445 | 848 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
e308b3d1 MP |
849 | |
850 | /* Optimal transfer length granularity */ | |
ea61fca5 MP |
851 | gran = 1 << scsi_debug_physblk_exp; |
852 | arr[2] = (gran >> 8) & 0xff; | |
853 | arr[3] = gran & 0xff; | |
e308b3d1 MP |
854 | |
855 | /* Maximum Transfer Length */ | |
c65b1445 DG |
856 | if (sdebug_store_sectors > 0x400) { |
857 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; | |
858 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; | |
859 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; | |
860 | arr[7] = sdebug_store_sectors & 0xff; | |
861 | } | |
44d92694 | 862 | |
e308b3d1 MP |
863 | /* Optimal Transfer Length */ |
864 | put_unaligned_be32(scsi_debug_opt_blks, &arr[8]); | |
865 | ||
5b94e232 | 866 | if (scsi_debug_lbpu) { |
e308b3d1 | 867 | /* Maximum Unmap LBA Count */ |
6014759c | 868 | put_unaligned_be32(scsi_debug_unmap_max_blocks, &arr[16]); |
e308b3d1 MP |
869 | |
870 | /* Maximum Unmap Block Descriptor Count */ | |
44d92694 MP |
871 | put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]); |
872 | } | |
873 | ||
e308b3d1 | 874 | /* Unmap Granularity Alignment */ |
44d92694 MP |
875 | if (scsi_debug_unmap_alignment) { |
876 | put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]); | |
877 | arr[28] |= 0x80; /* UGAVALID */ | |
878 | } | |
879 | ||
e308b3d1 | 880 | /* Optimal Unmap Granularity */ |
6014759c MP |
881 | put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]); |
882 | ||
5b94e232 MP |
883 | /* Maximum WRITE SAME Length */ |
884 | put_unaligned_be64(scsi_debug_write_same_length, &arr[32]); | |
885 | ||
886 | return 0x3c; /* Mandatory page length for Logical Block Provisioning */ | |
44d92694 | 887 | |
c65b1445 | 888 | return sizeof(vpdb0_data); |
1da177e4 LT |
889 | } |
890 | ||
1e49f785 | 891 | /* Block device characteristics VPD page (SBC-3) */ |
eac6e8e4 MW |
892 | static int inquiry_evpd_b1(unsigned char *arr) |
893 | { | |
894 | memset(arr, 0, 0x3c); | |
895 | arr[0] = 0; | |
1e49f785 DG |
896 | arr[1] = 1; /* non rotating medium (e.g. solid state) */ |
897 | arr[2] = 0; | |
898 | arr[3] = 5; /* less than 1.8" */ | |
eac6e8e4 MW |
899 | |
900 | return 0x3c; | |
901 | } | |
1da177e4 | 902 | |
be1dd78d | 903 | /* Logical block provisioning VPD page (SBC-3) */ |
6014759c MP |
904 | static int inquiry_evpd_b2(unsigned char *arr) |
905 | { | |
3f0bc3b3 | 906 | memset(arr, 0, 0x4); |
6014759c MP |
907 | arr[0] = 0; /* threshold exponent */ |
908 | ||
5b94e232 | 909 | if (scsi_debug_lbpu) |
6014759c MP |
910 | arr[1] = 1 << 7; |
911 | ||
5b94e232 | 912 | if (scsi_debug_lbpws) |
6014759c MP |
913 | arr[1] |= 1 << 6; |
914 | ||
5b94e232 MP |
915 | if (scsi_debug_lbpws10) |
916 | arr[1] |= 1 << 5; | |
917 | ||
be1dd78d ES |
918 | if (scsi_debug_lbprz) |
919 | arr[1] |= 1 << 2; | |
920 | ||
3f0bc3b3 | 921 | return 0x4; |
6014759c MP |
922 | } |
923 | ||
1da177e4 | 924 | #define SDEBUG_LONG_INQ_SZ 96 |
c65b1445 | 925 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
1da177e4 | 926 | |
cbf67842 | 927 | static int resp_inquiry(struct scsi_cmnd *scp, int target, |
1da177e4 LT |
928 | struct sdebug_dev_info * devip) |
929 | { | |
930 | unsigned char pq_pdt; | |
5a09e398 | 931 | unsigned char * arr; |
01123ef4 | 932 | unsigned char *cmd = scp->cmnd; |
5a09e398 | 933 | int alloc_len, n, ret; |
1da177e4 LT |
934 | |
935 | alloc_len = (cmd[3] << 8) + cmd[4]; | |
6f3cbf55 DG |
936 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
937 | if (! arr) | |
938 | return DID_REQUEUE << 16; | |
c65b1445 DG |
939 | if (devip->wlun) |
940 | pq_pdt = 0x1e; /* present, wlun */ | |
941 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) | |
942 | pq_pdt = 0x7f; /* not present, no device type */ | |
943 | else | |
944 | pq_pdt = (scsi_debug_ptype & 0x1f); | |
1da177e4 LT |
945 | arr[0] = pq_pdt; |
946 | if (0x2 & cmd[1]) { /* CMDDT bit set */ | |
cbf67842 | 947 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1da177e4 | 948 | 0); |
5a09e398 | 949 | kfree(arr); |
1da177e4 LT |
950 | return check_condition_result; |
951 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ | |
5a09e398 | 952 | int lu_id_num, port_group_id, target_dev_id, len; |
c65b1445 DG |
953 | char lu_id_str[6]; |
954 | int host_no = devip->sdbg_host->shost->host_no; | |
1da177e4 | 955 | |
5a09e398 HR |
956 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
957 | (devip->channel & 0x7f); | |
23183910 DG |
958 | if (0 == scsi_debug_vpd_use_hostno) |
959 | host_no = 0; | |
c65b1445 DG |
960 | lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
961 | (devip->target * 1000) + devip->lun); | |
962 | target_dev_id = ((host_no + 1) * 2000) + | |
963 | (devip->target * 1000) - 3; | |
964 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); | |
1da177e4 | 965 | if (0 == cmd[2]) { /* supported vital product data pages */ |
c65b1445 DG |
966 | arr[1] = cmd[2]; /*sanity */ |
967 | n = 4; | |
968 | arr[n++] = 0x0; /* this page */ | |
969 | arr[n++] = 0x80; /* unit serial number */ | |
970 | arr[n++] = 0x83; /* device identification */ | |
971 | arr[n++] = 0x84; /* software interface ident. */ | |
972 | arr[n++] = 0x85; /* management network addresses */ | |
973 | arr[n++] = 0x86; /* extended inquiry */ | |
974 | arr[n++] = 0x87; /* mode page policy */ | |
975 | arr[n++] = 0x88; /* SCSI ports */ | |
976 | arr[n++] = 0x89; /* ATA information */ | |
977 | arr[n++] = 0xb0; /* Block limits (SBC) */ | |
eac6e8e4 | 978 | arr[n++] = 0xb1; /* Block characteristics (SBC) */ |
5b94e232 MP |
979 | if (scsi_debug_lbp()) /* Logical Block Prov. (SBC) */ |
980 | arr[n++] = 0xb2; | |
c65b1445 | 981 | arr[3] = n - 4; /* number of supported VPD pages */ |
1da177e4 | 982 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
c65b1445 | 983 | arr[1] = cmd[2]; /*sanity */ |
1da177e4 | 984 | arr[3] = len; |
c65b1445 | 985 | memcpy(&arr[4], lu_id_str, len); |
1da177e4 | 986 | } else if (0x83 == cmd[2]) { /* device identification */ |
c65b1445 | 987 | arr[1] = cmd[2]; /*sanity */ |
5a09e398 HR |
988 | arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
989 | target_dev_id, lu_id_num, | |
990 | lu_id_str, len); | |
c65b1445 DG |
991 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
992 | arr[1] = cmd[2]; /*sanity */ | |
993 | arr[3] = inquiry_evpd_84(&arr[4]); | |
994 | } else if (0x85 == cmd[2]) { /* Management network addresses */ | |
995 | arr[1] = cmd[2]; /*sanity */ | |
996 | arr[3] = inquiry_evpd_85(&arr[4]); | |
997 | } else if (0x86 == cmd[2]) { /* extended inquiry */ | |
998 | arr[1] = cmd[2]; /*sanity */ | |
999 | arr[3] = 0x3c; /* number of following entries */ | |
c6a44287 MP |
1000 | if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) |
1001 | arr[4] = 0x4; /* SPT: GRD_CHK:1 */ | |
1002 | else if (scsi_debug_dif) | |
1003 | arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ | |
1004 | else | |
1005 | arr[4] = 0x0; /* no protection stuff */ | |
c65b1445 DG |
1006 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
1007 | } else if (0x87 == cmd[2]) { /* mode page policy */ | |
1008 | arr[1] = cmd[2]; /*sanity */ | |
1009 | arr[3] = 0x8; /* number of following entries */ | |
1010 | arr[4] = 0x2; /* disconnect-reconnect mp */ | |
1011 | arr[6] = 0x80; /* mlus, shared */ | |
1012 | arr[8] = 0x18; /* protocol specific lu */ | |
1013 | arr[10] = 0x82; /* mlus, per initiator port */ | |
1014 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ | |
1015 | arr[1] = cmd[2]; /*sanity */ | |
1016 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); | |
1017 | } else if (0x89 == cmd[2]) { /* ATA information */ | |
1018 | arr[1] = cmd[2]; /*sanity */ | |
1019 | n = inquiry_evpd_89(&arr[4]); | |
1020 | arr[2] = (n >> 8); | |
1021 | arr[3] = (n & 0xff); | |
1022 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ | |
1023 | arr[1] = cmd[2]; /*sanity */ | |
1024 | arr[3] = inquiry_evpd_b0(&arr[4]); | |
eac6e8e4 MW |
1025 | } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */ |
1026 | arr[1] = cmd[2]; /*sanity */ | |
1027 | arr[3] = inquiry_evpd_b1(&arr[4]); | |
5b94e232 | 1028 | } else if (0xb2 == cmd[2]) { /* Logical Block Prov. (SBC) */ |
6014759c MP |
1029 | arr[1] = cmd[2]; /*sanity */ |
1030 | arr[3] = inquiry_evpd_b2(&arr[4]); | |
1da177e4 LT |
1031 | } else { |
1032 | /* Illegal request, invalid field in cdb */ | |
cbf67842 | 1033 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
1da177e4 | 1034 | INVALID_FIELD_IN_CDB, 0); |
5a09e398 | 1035 | kfree(arr); |
1da177e4 LT |
1036 | return check_condition_result; |
1037 | } | |
c65b1445 | 1038 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
5a09e398 | 1039 | ret = fill_from_dev_buffer(scp, arr, |
c65b1445 | 1040 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
5a09e398 HR |
1041 | kfree(arr); |
1042 | return ret; | |
1da177e4 LT |
1043 | } |
1044 | /* drops through here for a standard inquiry */ | |
d986788b | 1045 | arr[1] = scsi_debug_removable ? 0x80 : 0; /* Removable disk */ |
1da177e4 LT |
1046 | arr[2] = scsi_debug_scsi_level; |
1047 | arr[3] = 2; /* response_data_format==2 */ | |
1048 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; | |
c6a44287 | 1049 | arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */ |
5a09e398 HR |
1050 | if (0 == scsi_debug_vpd_use_hostno) |
1051 | arr[5] = 0x10; /* claim: implicit TGPS */ | |
c65b1445 | 1052 | arr[6] = 0x10; /* claim: MultiP */ |
1da177e4 | 1053 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
c65b1445 | 1054 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
1da177e4 LT |
1055 | memcpy(&arr[8], inq_vendor_id, 8); |
1056 | memcpy(&arr[16], inq_product_id, 16); | |
1057 | memcpy(&arr[32], inq_product_rev, 4); | |
1058 | /* version descriptors (2 bytes each) follow */ | |
e46b0344 DG |
1059 | arr[58] = 0x0; arr[59] = 0xa2; /* SAM-5 rev 4 */ |
1060 | arr[60] = 0x4; arr[61] = 0x68; /* SPC-4 rev 37 */ | |
c65b1445 | 1061 | n = 62; |
1da177e4 | 1062 | if (scsi_debug_ptype == 0) { |
e46b0344 | 1063 | arr[n++] = 0x4; arr[n++] = 0xc5; /* SBC-4 rev 36 */ |
1da177e4 | 1064 | } else if (scsi_debug_ptype == 1) { |
e46b0344 | 1065 | arr[n++] = 0x5; arr[n++] = 0x25; /* SSC-4 rev 3 */ |
1da177e4 | 1066 | } |
e46b0344 | 1067 | arr[n++] = 0x20; arr[n++] = 0xe6; /* SPL-3 rev 7 */ |
5a09e398 | 1068 | ret = fill_from_dev_buffer(scp, arr, |
1da177e4 | 1069 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
5a09e398 HR |
1070 | kfree(arr); |
1071 | return ret; | |
1da177e4 LT |
1072 | } |
1073 | ||
1074 | static int resp_requests(struct scsi_cmnd * scp, | |
1075 | struct sdebug_dev_info * devip) | |
1076 | { | |
1077 | unsigned char * sbuff; | |
01123ef4 | 1078 | unsigned char *cmd = scp->cmnd; |
cbf67842 | 1079 | unsigned char arr[SCSI_SENSE_BUFFERSIZE]; |
c65b1445 | 1080 | int want_dsense; |
1da177e4 LT |
1081 | int len = 18; |
1082 | ||
c65b1445 | 1083 | memset(arr, 0, sizeof(arr)); |
c65b1445 | 1084 | want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; |
cbf67842 | 1085 | sbuff = scp->sense_buffer; |
c65b1445 DG |
1086 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
1087 | if (want_dsense) { | |
1088 | arr[0] = 0x72; | |
1089 | arr[1] = 0x0; /* NO_SENSE in sense_key */ | |
1090 | arr[2] = THRESHOLD_EXCEEDED; | |
1091 | arr[3] = 0xff; /* TEST set and MRIE==6 */ | |
1092 | } else { | |
1093 | arr[0] = 0x70; | |
1094 | arr[2] = 0x0; /* NO_SENSE in sense_key */ | |
1095 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
1096 | arr[12] = THRESHOLD_EXCEEDED; | |
1097 | arr[13] = 0xff; /* TEST set and MRIE==6 */ | |
1098 | } | |
c65b1445 | 1099 | } else { |
cbf67842 | 1100 | memcpy(arr, sbuff, SCSI_SENSE_BUFFERSIZE); |
c65b1445 DG |
1101 | if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
1102 | /* DESC bit set and sense_buff in fixed format */ | |
1103 | memset(arr, 0, sizeof(arr)); | |
1104 | arr[0] = 0x72; | |
1105 | arr[1] = sbuff[2]; /* sense key */ | |
1106 | arr[2] = sbuff[12]; /* asc */ | |
1107 | arr[3] = sbuff[13]; /* ascq */ | |
1108 | len = 8; | |
1109 | } | |
1110 | } | |
cbf67842 | 1111 | mk_sense_buffer(scp, 0, NO_ADDITIONAL_SENSE, 0); |
1da177e4 LT |
1112 | return fill_from_dev_buffer(scp, arr, len); |
1113 | } | |
1114 | ||
c65b1445 DG |
1115 | static int resp_start_stop(struct scsi_cmnd * scp, |
1116 | struct sdebug_dev_info * devip) | |
1117 | { | |
01123ef4 | 1118 | unsigned char *cmd = scp->cmnd; |
c65b1445 DG |
1119 | int power_cond, errsts, start; |
1120 | ||
cbf67842 DG |
1121 | errsts = check_readiness(scp, UAS_ONLY, devip); |
1122 | if (errsts) | |
c65b1445 DG |
1123 | return errsts; |
1124 | power_cond = (cmd[4] & 0xf0) >> 4; | |
1125 | if (power_cond) { | |
cbf67842 | 1126 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
c65b1445 DG |
1127 | 0); |
1128 | return check_condition_result; | |
1129 | } | |
1130 | start = cmd[4] & 1; | |
1131 | if (start == devip->stopped) | |
1132 | devip->stopped = !start; | |
1133 | return 0; | |
1134 | } | |
1135 | ||
28898873 FT |
1136 | static sector_t get_sdebug_capacity(void) |
1137 | { | |
1138 | if (scsi_debug_virtual_gb > 0) | |
5447ed6c DG |
1139 | return (sector_t)scsi_debug_virtual_gb * |
1140 | (1073741824 / scsi_debug_sector_size); | |
28898873 FT |
1141 | else |
1142 | return sdebug_store_sectors; | |
1143 | } | |
1144 | ||
1da177e4 LT |
1145 | #define SDEBUG_READCAP_ARR_SZ 8 |
1146 | static int resp_readcap(struct scsi_cmnd * scp, | |
1147 | struct sdebug_dev_info * devip) | |
1148 | { | |
1149 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; | |
c65b1445 | 1150 | unsigned int capac; |
1da177e4 LT |
1151 | int errsts; |
1152 | ||
cbf67842 DG |
1153 | errsts = check_readiness(scp, UAS_ONLY, devip); |
1154 | if (errsts) | |
1da177e4 | 1155 | return errsts; |
c65b1445 | 1156 | /* following just in case virtual_gb changed */ |
28898873 | 1157 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 | 1158 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
c65b1445 DG |
1159 | if (sdebug_capacity < 0xffffffff) { |
1160 | capac = (unsigned int)sdebug_capacity - 1; | |
1161 | arr[0] = (capac >> 24); | |
1162 | arr[1] = (capac >> 16) & 0xff; | |
1163 | arr[2] = (capac >> 8) & 0xff; | |
1164 | arr[3] = capac & 0xff; | |
1165 | } else { | |
1166 | arr[0] = 0xff; | |
1167 | arr[1] = 0xff; | |
1168 | arr[2] = 0xff; | |
1169 | arr[3] = 0xff; | |
1170 | } | |
597136ab MP |
1171 | arr[6] = (scsi_debug_sector_size >> 8) & 0xff; |
1172 | arr[7] = scsi_debug_sector_size & 0xff; | |
1da177e4 LT |
1173 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
1174 | } | |
1175 | ||
c65b1445 DG |
1176 | #define SDEBUG_READCAP16_ARR_SZ 32 |
1177 | static int resp_readcap16(struct scsi_cmnd * scp, | |
1178 | struct sdebug_dev_info * devip) | |
1179 | { | |
01123ef4 | 1180 | unsigned char *cmd = scp->cmnd; |
c65b1445 DG |
1181 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; |
1182 | unsigned long long capac; | |
1183 | int errsts, k, alloc_len; | |
1184 | ||
cbf67842 DG |
1185 | errsts = check_readiness(scp, UAS_ONLY, devip); |
1186 | if (errsts) | |
c65b1445 DG |
1187 | return errsts; |
1188 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) | |
1189 | + cmd[13]); | |
1190 | /* following just in case virtual_gb changed */ | |
28898873 | 1191 | sdebug_capacity = get_sdebug_capacity(); |
c65b1445 DG |
1192 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
1193 | capac = sdebug_capacity - 1; | |
1194 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1195 | arr[7 - k] = capac & 0xff; | |
597136ab MP |
1196 | arr[8] = (scsi_debug_sector_size >> 24) & 0xff; |
1197 | arr[9] = (scsi_debug_sector_size >> 16) & 0xff; | |
1198 | arr[10] = (scsi_debug_sector_size >> 8) & 0xff; | |
1199 | arr[11] = scsi_debug_sector_size & 0xff; | |
ea61fca5 MP |
1200 | arr[13] = scsi_debug_physblk_exp & 0xf; |
1201 | arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f; | |
44d92694 | 1202 | |
be1dd78d | 1203 | if (scsi_debug_lbp()) { |
5b94e232 | 1204 | arr[14] |= 0x80; /* LBPME */ |
be1dd78d ES |
1205 | if (scsi_debug_lbprz) |
1206 | arr[14] |= 0x40; /* LBPRZ */ | |
1207 | } | |
44d92694 | 1208 | |
ea61fca5 | 1209 | arr[15] = scsi_debug_lowest_aligned & 0xff; |
c6a44287 MP |
1210 | |
1211 | if (scsi_debug_dif) { | |
1212 | arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */ | |
1213 | arr[12] |= 1; /* PROT_EN */ | |
1214 | } | |
1215 | ||
c65b1445 DG |
1216 | return fill_from_dev_buffer(scp, arr, |
1217 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); | |
1218 | } | |
1219 | ||
5a09e398 HR |
1220 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
1221 | ||
1222 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, | |
1223 | struct sdebug_dev_info * devip) | |
1224 | { | |
01123ef4 | 1225 | unsigned char *cmd = scp->cmnd; |
5a09e398 HR |
1226 | unsigned char * arr; |
1227 | int host_no = devip->sdbg_host->shost->host_no; | |
1228 | int n, ret, alen, rlen; | |
1229 | int port_group_a, port_group_b, port_a, port_b; | |
1230 | ||
1231 | alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) | |
1232 | + cmd[9]); | |
1233 | ||
6f3cbf55 DG |
1234 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
1235 | if (! arr) | |
1236 | return DID_REQUEUE << 16; | |
5a09e398 HR |
1237 | /* |
1238 | * EVPD page 0x88 states we have two ports, one | |
1239 | * real and a fake port with no device connected. | |
1240 | * So we create two port groups with one port each | |
1241 | * and set the group with port B to unavailable. | |
1242 | */ | |
1243 | port_a = 0x1; /* relative port A */ | |
1244 | port_b = 0x2; /* relative port B */ | |
1245 | port_group_a = (((host_no + 1) & 0x7f) << 8) + | |
1246 | (devip->channel & 0x7f); | |
1247 | port_group_b = (((host_no + 1) & 0x7f) << 8) + | |
1248 | (devip->channel & 0x7f) + 0x80; | |
1249 | ||
1250 | /* | |
1251 | * The asymmetric access state is cycled according to the host_id. | |
1252 | */ | |
1253 | n = 4; | |
1254 | if (0 == scsi_debug_vpd_use_hostno) { | |
1255 | arr[n++] = host_no % 3; /* Asymm access state */ | |
1256 | arr[n++] = 0x0F; /* claim: all states are supported */ | |
1257 | } else { | |
1258 | arr[n++] = 0x0; /* Active/Optimized path */ | |
1259 | arr[n++] = 0x01; /* claim: only support active/optimized paths */ | |
1260 | } | |
1261 | arr[n++] = (port_group_a >> 8) & 0xff; | |
1262 | arr[n++] = port_group_a & 0xff; | |
1263 | arr[n++] = 0; /* Reserved */ | |
1264 | arr[n++] = 0; /* Status code */ | |
1265 | arr[n++] = 0; /* Vendor unique */ | |
1266 | arr[n++] = 0x1; /* One port per group */ | |
1267 | arr[n++] = 0; /* Reserved */ | |
1268 | arr[n++] = 0; /* Reserved */ | |
1269 | arr[n++] = (port_a >> 8) & 0xff; | |
1270 | arr[n++] = port_a & 0xff; | |
1271 | arr[n++] = 3; /* Port unavailable */ | |
1272 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ | |
1273 | arr[n++] = (port_group_b >> 8) & 0xff; | |
1274 | arr[n++] = port_group_b & 0xff; | |
1275 | arr[n++] = 0; /* Reserved */ | |
1276 | arr[n++] = 0; /* Status code */ | |
1277 | arr[n++] = 0; /* Vendor unique */ | |
1278 | arr[n++] = 0x1; /* One port per group */ | |
1279 | arr[n++] = 0; /* Reserved */ | |
1280 | arr[n++] = 0; /* Reserved */ | |
1281 | arr[n++] = (port_b >> 8) & 0xff; | |
1282 | arr[n++] = port_b & 0xff; | |
1283 | ||
1284 | rlen = n - 4; | |
1285 | arr[0] = (rlen >> 24) & 0xff; | |
1286 | arr[1] = (rlen >> 16) & 0xff; | |
1287 | arr[2] = (rlen >> 8) & 0xff; | |
1288 | arr[3] = rlen & 0xff; | |
1289 | ||
1290 | /* | |
1291 | * Return the smallest value of either | |
1292 | * - The allocated length | |
1293 | * - The constructed command length | |
1294 | * - The maximum array size | |
1295 | */ | |
1296 | rlen = min(alen,n); | |
1297 | ret = fill_from_dev_buffer(scp, arr, | |
1298 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); | |
1299 | kfree(arr); | |
1300 | return ret; | |
1301 | } | |
1302 | ||
1da177e4 LT |
1303 | /* <<Following mode page info copied from ST318451LW>> */ |
1304 | ||
1305 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) | |
1306 | { /* Read-Write Error Recovery page for mode_sense */ | |
1307 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, | |
1308 | 5, 0, 0xff, 0xff}; | |
1309 | ||
1310 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); | |
1311 | if (1 == pcontrol) | |
1312 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); | |
1313 | return sizeof(err_recov_pg); | |
1314 | } | |
1315 | ||
1316 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) | |
1317 | { /* Disconnect-Reconnect page for mode_sense */ | |
1318 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, | |
1319 | 0, 0, 0, 0, 0, 0, 0, 0}; | |
1320 | ||
1321 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); | |
1322 | if (1 == pcontrol) | |
1323 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); | |
1324 | return sizeof(disconnect_pg); | |
1325 | } | |
1326 | ||
1327 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) | |
1328 | { /* Format device page for mode_sense */ | |
597136ab MP |
1329 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
1330 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1331 | 0, 0, 0, 0, 0x40, 0, 0, 0}; | |
1332 | ||
1333 | memcpy(p, format_pg, sizeof(format_pg)); | |
1334 | p[10] = (sdebug_sectors_per >> 8) & 0xff; | |
1335 | p[11] = sdebug_sectors_per & 0xff; | |
1336 | p[12] = (scsi_debug_sector_size >> 8) & 0xff; | |
1337 | p[13] = scsi_debug_sector_size & 0xff; | |
d986788b | 1338 | if (scsi_debug_removable) |
597136ab MP |
1339 | p[20] |= 0x20; /* should agree with INQUIRY */ |
1340 | if (1 == pcontrol) | |
1341 | memset(p + 2, 0, sizeof(format_pg) - 2); | |
1342 | return sizeof(format_pg); | |
1da177e4 LT |
1343 | } |
1344 | ||
1345 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) | |
1346 | { /* Caching page for mode_sense */ | |
cbf67842 DG |
1347 | unsigned char ch_caching_pg[] = {/* 0x8, 18, */ 0x4, 0, 0, 0, 0, 0, |
1348 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; | |
1349 | unsigned char d_caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
1da177e4 LT |
1350 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; |
1351 | ||
cbf67842 DG |
1352 | if (SCSI_DEBUG_OPT_N_WCE & scsi_debug_opts) |
1353 | caching_pg[2] &= ~0x4; /* set WCE=0 (default WCE=1) */ | |
1da177e4 LT |
1354 | memcpy(p, caching_pg, sizeof(caching_pg)); |
1355 | if (1 == pcontrol) | |
cbf67842 DG |
1356 | memcpy(p + 2, ch_caching_pg, sizeof(ch_caching_pg)); |
1357 | else if (2 == pcontrol) | |
1358 | memcpy(p, d_caching_pg, sizeof(d_caching_pg)); | |
1da177e4 LT |
1359 | return sizeof(caching_pg); |
1360 | } | |
1361 | ||
1362 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) | |
1363 | { /* Control mode page for mode_sense */ | |
c65b1445 DG |
1364 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
1365 | 0, 0, 0, 0}; | |
1366 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, | |
1da177e4 LT |
1367 | 0, 0, 0x2, 0x4b}; |
1368 | ||
1369 | if (scsi_debug_dsense) | |
1370 | ctrl_m_pg[2] |= 0x4; | |
c65b1445 DG |
1371 | else |
1372 | ctrl_m_pg[2] &= ~0x4; | |
c6a44287 MP |
1373 | |
1374 | if (scsi_debug_ato) | |
1375 | ctrl_m_pg[5] |= 0x80; /* ATO=1 */ | |
1376 | ||
1da177e4 LT |
1377 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
1378 | if (1 == pcontrol) | |
c65b1445 DG |
1379 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
1380 | else if (2 == pcontrol) | |
1381 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); | |
1da177e4 LT |
1382 | return sizeof(ctrl_m_pg); |
1383 | } | |
1384 | ||
c65b1445 | 1385 | |
1da177e4 LT |
1386 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
1387 | { /* Informational Exceptions control mode page for mode_sense */ | |
c65b1445 DG |
1388 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
1389 | 0, 0, 0x0, 0x0}; | |
1390 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
1391 | 0, 0, 0x0, 0x0}; | |
1392 | ||
1da177e4 LT |
1393 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
1394 | if (1 == pcontrol) | |
c65b1445 DG |
1395 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
1396 | else if (2 == pcontrol) | |
1397 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); | |
1da177e4 LT |
1398 | return sizeof(iec_m_pg); |
1399 | } | |
1400 | ||
c65b1445 DG |
1401 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
1402 | { /* SAS SSP mode page - short format for mode_sense */ | |
1403 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, | |
1404 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; | |
1405 | ||
1406 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); | |
1407 | if (1 == pcontrol) | |
1408 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); | |
1409 | return sizeof(sas_sf_m_pg); | |
1410 | } | |
1411 | ||
1412 | ||
1413 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, | |
1414 | int target_dev_id) | |
1415 | { /* SAS phy control and discover mode page for mode_sense */ | |
1416 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, | |
1417 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1418 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1419 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1420 | 0x2, 0, 0, 0, 0, 0, 0, 0, | |
1421 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1422 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1423 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1424 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1425 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1426 | 0x3, 0, 0, 0, 0, 0, 0, 0, | |
1427 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1428 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1429 | }; | |
1430 | int port_a, port_b; | |
1431 | ||
1432 | port_a = target_dev_id + 1; | |
1433 | port_b = port_a + 1; | |
1434 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); | |
1435 | p[20] = (port_a >> 24); | |
1436 | p[21] = (port_a >> 16) & 0xff; | |
1437 | p[22] = (port_a >> 8) & 0xff; | |
1438 | p[23] = port_a & 0xff; | |
1439 | p[48 + 20] = (port_b >> 24); | |
1440 | p[48 + 21] = (port_b >> 16) & 0xff; | |
1441 | p[48 + 22] = (port_b >> 8) & 0xff; | |
1442 | p[48 + 23] = port_b & 0xff; | |
1443 | if (1 == pcontrol) | |
1444 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); | |
1445 | return sizeof(sas_pcd_m_pg); | |
1446 | } | |
1447 | ||
1448 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) | |
1449 | { /* SAS SSP shared protocol specific port mode subpage */ | |
1450 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, | |
1451 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1452 | }; | |
1453 | ||
1454 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); | |
1455 | if (1 == pcontrol) | |
1456 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); | |
1457 | return sizeof(sas_sha_m_pg); | |
1458 | } | |
1459 | ||
1da177e4 LT |
1460 | #define SDEBUG_MAX_MSENSE_SZ 256 |
1461 | ||
1462 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, | |
1463 | struct sdebug_dev_info * devip) | |
1464 | { | |
23183910 DG |
1465 | unsigned char dbd, llbaa; |
1466 | int pcontrol, pcode, subpcode, bd_len; | |
1da177e4 | 1467 | unsigned char dev_spec; |
23183910 | 1468 | int k, alloc_len, msense_6, offset, len, errsts, target_dev_id; |
1da177e4 LT |
1469 | unsigned char * ap; |
1470 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; | |
01123ef4 | 1471 | unsigned char *cmd = scp->cmnd; |
1da177e4 | 1472 | |
cbf67842 DG |
1473 | errsts = check_readiness(scp, UAS_ONLY, devip); |
1474 | if (errsts) | |
1da177e4 | 1475 | return errsts; |
23183910 | 1476 | dbd = !!(cmd[1] & 0x8); |
1da177e4 LT |
1477 | pcontrol = (cmd[2] & 0xc0) >> 6; |
1478 | pcode = cmd[2] & 0x3f; | |
1479 | subpcode = cmd[3]; | |
1480 | msense_6 = (MODE_SENSE == cmd[0]); | |
23183910 DG |
1481 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
1482 | if ((0 == scsi_debug_ptype) && (0 == dbd)) | |
1483 | bd_len = llbaa ? 16 : 8; | |
1484 | else | |
1485 | bd_len = 0; | |
1da177e4 LT |
1486 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
1487 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); | |
1488 | if (0x3 == pcontrol) { /* Saving values not supported */ | |
cbf67842 | 1489 | mk_sense_buffer(scp, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, 0); |
1da177e4 LT |
1490 | return check_condition_result; |
1491 | } | |
c65b1445 DG |
1492 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
1493 | (devip->target * 1000) - 3; | |
23183910 DG |
1494 | /* set DPOFUA bit for disks */ |
1495 | if (0 == scsi_debug_ptype) | |
1496 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; | |
1497 | else | |
1498 | dev_spec = 0x0; | |
1da177e4 LT |
1499 | if (msense_6) { |
1500 | arr[2] = dev_spec; | |
23183910 | 1501 | arr[3] = bd_len; |
1da177e4 LT |
1502 | offset = 4; |
1503 | } else { | |
1504 | arr[3] = dev_spec; | |
23183910 DG |
1505 | if (16 == bd_len) |
1506 | arr[4] = 0x1; /* set LONGLBA bit */ | |
1507 | arr[7] = bd_len; /* assume 255 or less */ | |
1da177e4 LT |
1508 | offset = 8; |
1509 | } | |
1510 | ap = arr + offset; | |
28898873 FT |
1511 | if ((bd_len > 0) && (!sdebug_capacity)) |
1512 | sdebug_capacity = get_sdebug_capacity(); | |
1513 | ||
23183910 DG |
1514 | if (8 == bd_len) { |
1515 | if (sdebug_capacity > 0xfffffffe) { | |
1516 | ap[0] = 0xff; | |
1517 | ap[1] = 0xff; | |
1518 | ap[2] = 0xff; | |
1519 | ap[3] = 0xff; | |
1520 | } else { | |
1521 | ap[0] = (sdebug_capacity >> 24) & 0xff; | |
1522 | ap[1] = (sdebug_capacity >> 16) & 0xff; | |
1523 | ap[2] = (sdebug_capacity >> 8) & 0xff; | |
1524 | ap[3] = sdebug_capacity & 0xff; | |
1525 | } | |
597136ab MP |
1526 | ap[6] = (scsi_debug_sector_size >> 8) & 0xff; |
1527 | ap[7] = scsi_debug_sector_size & 0xff; | |
23183910 DG |
1528 | offset += bd_len; |
1529 | ap = arr + offset; | |
1530 | } else if (16 == bd_len) { | |
1531 | unsigned long long capac = sdebug_capacity; | |
1532 | ||
1533 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1534 | ap[7 - k] = capac & 0xff; | |
597136ab MP |
1535 | ap[12] = (scsi_debug_sector_size >> 24) & 0xff; |
1536 | ap[13] = (scsi_debug_sector_size >> 16) & 0xff; | |
1537 | ap[14] = (scsi_debug_sector_size >> 8) & 0xff; | |
1538 | ap[15] = scsi_debug_sector_size & 0xff; | |
23183910 DG |
1539 | offset += bd_len; |
1540 | ap = arr + offset; | |
1541 | } | |
1da177e4 | 1542 | |
c65b1445 DG |
1543 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
1544 | /* TODO: Control Extension page */ | |
cbf67842 | 1545 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1da177e4 LT |
1546 | 0); |
1547 | return check_condition_result; | |
1548 | } | |
1549 | switch (pcode) { | |
1550 | case 0x1: /* Read-Write error recovery page, direct access */ | |
1551 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1552 | offset += len; | |
1553 | break; | |
1554 | case 0x2: /* Disconnect-Reconnect page, all devices */ | |
1555 | len = resp_disconnect_pg(ap, pcontrol, target); | |
1556 | offset += len; | |
1557 | break; | |
1558 | case 0x3: /* Format device page, direct access */ | |
1559 | len = resp_format_pg(ap, pcontrol, target); | |
1560 | offset += len; | |
1561 | break; | |
1562 | case 0x8: /* Caching page, direct access */ | |
1563 | len = resp_caching_pg(ap, pcontrol, target); | |
1564 | offset += len; | |
1565 | break; | |
1566 | case 0xa: /* Control Mode page, all devices */ | |
1567 | len = resp_ctrl_m_pg(ap, pcontrol, target); | |
1568 | offset += len; | |
1569 | break; | |
c65b1445 DG |
1570 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
1571 | if ((subpcode > 0x2) && (subpcode < 0xff)) { | |
cbf67842 | 1572 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
c65b1445 DG |
1573 | INVALID_FIELD_IN_CDB, 0); |
1574 | return check_condition_result; | |
1575 | } | |
1576 | len = 0; | |
1577 | if ((0x0 == subpcode) || (0xff == subpcode)) | |
1578 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1579 | if ((0x1 == subpcode) || (0xff == subpcode)) | |
1580 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, | |
1581 | target_dev_id); | |
1582 | if ((0x2 == subpcode) || (0xff == subpcode)) | |
1583 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1584 | offset += len; | |
1585 | break; | |
1da177e4 LT |
1586 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
1587 | len = resp_iec_m_pg(ap, pcontrol, target); | |
1588 | offset += len; | |
1589 | break; | |
1590 | case 0x3f: /* Read all Mode pages */ | |
c65b1445 DG |
1591 | if ((0 == subpcode) || (0xff == subpcode)) { |
1592 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1593 | len += resp_disconnect_pg(ap + len, pcontrol, target); | |
1594 | len += resp_format_pg(ap + len, pcontrol, target); | |
1595 | len += resp_caching_pg(ap + len, pcontrol, target); | |
1596 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); | |
1597 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1598 | if (0xff == subpcode) { | |
1599 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, | |
1600 | target, target_dev_id); | |
1601 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1602 | } | |
1603 | len += resp_iec_m_pg(ap + len, pcontrol, target); | |
1604 | } else { | |
cbf67842 | 1605 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
c65b1445 DG |
1606 | INVALID_FIELD_IN_CDB, 0); |
1607 | return check_condition_result; | |
1608 | } | |
1da177e4 LT |
1609 | offset += len; |
1610 | break; | |
1611 | default: | |
cbf67842 | 1612 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1da177e4 LT |
1613 | 0); |
1614 | return check_condition_result; | |
1615 | } | |
1616 | if (msense_6) | |
1617 | arr[0] = offset - 1; | |
1618 | else { | |
1619 | arr[0] = ((offset - 2) >> 8) & 0xff; | |
1620 | arr[1] = (offset - 2) & 0xff; | |
1621 | } | |
1622 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); | |
1623 | } | |
1624 | ||
c65b1445 DG |
1625 | #define SDEBUG_MAX_MSELECT_SZ 512 |
1626 | ||
1627 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, | |
1628 | struct sdebug_dev_info * devip) | |
1629 | { | |
1630 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; | |
1631 | int param_len, res, errsts, mpage; | |
1632 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; | |
01123ef4 | 1633 | unsigned char *cmd = scp->cmnd; |
c65b1445 | 1634 | |
cbf67842 DG |
1635 | errsts = check_readiness(scp, UAS_ONLY, devip); |
1636 | if (errsts) | |
c65b1445 DG |
1637 | return errsts; |
1638 | memset(arr, 0, sizeof(arr)); | |
1639 | pf = cmd[1] & 0x10; | |
1640 | sp = cmd[1] & 0x1; | |
1641 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); | |
1642 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { | |
cbf67842 | 1643 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
c65b1445 DG |
1644 | INVALID_FIELD_IN_CDB, 0); |
1645 | return check_condition_result; | |
1646 | } | |
1647 | res = fetch_to_dev_buffer(scp, arr, param_len); | |
1648 | if (-1 == res) | |
1649 | return (DID_ERROR << 16); | |
1650 | else if ((res < param_len) && | |
1651 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
cbf67842 DG |
1652 | sdev_printk(KERN_INFO, scp->device, |
1653 | "%s: cdb indicated=%d, IO sent=%d bytes\n", | |
1654 | __func__, param_len, res); | |
c65b1445 DG |
1655 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); |
1656 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); | |
23183910 | 1657 | if (md_len > 2) { |
cbf67842 | 1658 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
c65b1445 DG |
1659 | INVALID_FIELD_IN_PARAM_LIST, 0); |
1660 | return check_condition_result; | |
1661 | } | |
1662 | off = bd_len + (mselect6 ? 4 : 8); | |
1663 | mpage = arr[off] & 0x3f; | |
1664 | ps = !!(arr[off] & 0x80); | |
1665 | if (ps) { | |
cbf67842 | 1666 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
c65b1445 DG |
1667 | INVALID_FIELD_IN_PARAM_LIST, 0); |
1668 | return check_condition_result; | |
1669 | } | |
1670 | spf = !!(arr[off] & 0x40); | |
1671 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : | |
1672 | (arr[off + 1] + 2); | |
1673 | if ((pg_len + off) > param_len) { | |
cbf67842 | 1674 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
c65b1445 DG |
1675 | PARAMETER_LIST_LENGTH_ERR, 0); |
1676 | return check_condition_result; | |
1677 | } | |
1678 | switch (mpage) { | |
cbf67842 DG |
1679 | case 0x8: /* Caching Mode page */ |
1680 | if (caching_pg[1] == arr[off + 1]) { | |
1681 | memcpy(caching_pg + 2, arr + off + 2, | |
1682 | sizeof(caching_pg) - 2); | |
1683 | goto set_mode_changed_ua; | |
1684 | } | |
1685 | break; | |
c65b1445 DG |
1686 | case 0xa: /* Control Mode page */ |
1687 | if (ctrl_m_pg[1] == arr[off + 1]) { | |
1688 | memcpy(ctrl_m_pg + 2, arr + off + 2, | |
1689 | sizeof(ctrl_m_pg) - 2); | |
1690 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); | |
cbf67842 | 1691 | goto set_mode_changed_ua; |
c65b1445 DG |
1692 | } |
1693 | break; | |
1694 | case 0x1c: /* Informational Exceptions Mode page */ | |
1695 | if (iec_m_pg[1] == arr[off + 1]) { | |
1696 | memcpy(iec_m_pg + 2, arr + off + 2, | |
1697 | sizeof(iec_m_pg) - 2); | |
cbf67842 | 1698 | goto set_mode_changed_ua; |
c65b1445 DG |
1699 | } |
1700 | break; | |
1701 | default: | |
1702 | break; | |
1703 | } | |
cbf67842 | 1704 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
c65b1445 DG |
1705 | INVALID_FIELD_IN_PARAM_LIST, 0); |
1706 | return check_condition_result; | |
cbf67842 DG |
1707 | set_mode_changed_ua: |
1708 | set_bit(SDEBUG_UA_MODE_CHANGED, devip->uas_bm); | |
1709 | return 0; | |
c65b1445 DG |
1710 | } |
1711 | ||
1712 | static int resp_temp_l_pg(unsigned char * arr) | |
1713 | { | |
1714 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, | |
1715 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, | |
1716 | }; | |
1717 | ||
1718 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); | |
1719 | return sizeof(temp_l_pg); | |
1720 | } | |
1721 | ||
1722 | static int resp_ie_l_pg(unsigned char * arr) | |
1723 | { | |
1724 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, | |
1725 | }; | |
1726 | ||
1727 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); | |
1728 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ | |
1729 | arr[4] = THRESHOLD_EXCEEDED; | |
1730 | arr[5] = 0xff; | |
1731 | } | |
1732 | return sizeof(ie_l_pg); | |
1733 | } | |
1734 | ||
1735 | #define SDEBUG_MAX_LSENSE_SZ 512 | |
1736 | ||
1737 | static int resp_log_sense(struct scsi_cmnd * scp, | |
1738 | struct sdebug_dev_info * devip) | |
1739 | { | |
23183910 | 1740 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n; |
c65b1445 | 1741 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
01123ef4 | 1742 | unsigned char *cmd = scp->cmnd; |
c65b1445 | 1743 | |
cbf67842 DG |
1744 | errsts = check_readiness(scp, UAS_ONLY, devip); |
1745 | if (errsts) | |
c65b1445 DG |
1746 | return errsts; |
1747 | memset(arr, 0, sizeof(arr)); | |
1748 | ppc = cmd[1] & 0x2; | |
1749 | sp = cmd[1] & 0x1; | |
1750 | if (ppc || sp) { | |
cbf67842 | 1751 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
c65b1445 DG |
1752 | INVALID_FIELD_IN_CDB, 0); |
1753 | return check_condition_result; | |
1754 | } | |
1755 | pcontrol = (cmd[2] & 0xc0) >> 6; | |
1756 | pcode = cmd[2] & 0x3f; | |
23183910 | 1757 | subpcode = cmd[3] & 0xff; |
c65b1445 DG |
1758 | alloc_len = (cmd[7] << 8) + cmd[8]; |
1759 | arr[0] = pcode; | |
23183910 DG |
1760 | if (0 == subpcode) { |
1761 | switch (pcode) { | |
1762 | case 0x0: /* Supported log pages log page */ | |
1763 | n = 4; | |
1764 | arr[n++] = 0x0; /* this page */ | |
1765 | arr[n++] = 0xd; /* Temperature */ | |
1766 | arr[n++] = 0x2f; /* Informational exceptions */ | |
1767 | arr[3] = n - 4; | |
1768 | break; | |
1769 | case 0xd: /* Temperature log page */ | |
1770 | arr[3] = resp_temp_l_pg(arr + 4); | |
1771 | break; | |
1772 | case 0x2f: /* Informational exceptions log page */ | |
1773 | arr[3] = resp_ie_l_pg(arr + 4); | |
1774 | break; | |
1775 | default: | |
cbf67842 | 1776 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
23183910 DG |
1777 | INVALID_FIELD_IN_CDB, 0); |
1778 | return check_condition_result; | |
1779 | } | |
1780 | } else if (0xff == subpcode) { | |
1781 | arr[0] |= 0x40; | |
1782 | arr[1] = subpcode; | |
1783 | switch (pcode) { | |
1784 | case 0x0: /* Supported log pages and subpages log page */ | |
1785 | n = 4; | |
1786 | arr[n++] = 0x0; | |
1787 | arr[n++] = 0x0; /* 0,0 page */ | |
1788 | arr[n++] = 0x0; | |
1789 | arr[n++] = 0xff; /* this page */ | |
1790 | arr[n++] = 0xd; | |
1791 | arr[n++] = 0x0; /* Temperature */ | |
1792 | arr[n++] = 0x2f; | |
1793 | arr[n++] = 0x0; /* Informational exceptions */ | |
1794 | arr[3] = n - 4; | |
1795 | break; | |
1796 | case 0xd: /* Temperature subpages */ | |
1797 | n = 4; | |
1798 | arr[n++] = 0xd; | |
1799 | arr[n++] = 0x0; /* Temperature */ | |
1800 | arr[3] = n - 4; | |
1801 | break; | |
1802 | case 0x2f: /* Informational exceptions subpages */ | |
1803 | n = 4; | |
1804 | arr[n++] = 0x2f; | |
1805 | arr[n++] = 0x0; /* Informational exceptions */ | |
1806 | arr[3] = n - 4; | |
1807 | break; | |
1808 | default: | |
cbf67842 | 1809 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
23183910 DG |
1810 | INVALID_FIELD_IN_CDB, 0); |
1811 | return check_condition_result; | |
1812 | } | |
1813 | } else { | |
cbf67842 | 1814 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
c65b1445 DG |
1815 | INVALID_FIELD_IN_CDB, 0); |
1816 | return check_condition_result; | |
1817 | } | |
1818 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); | |
1819 | return fill_from_dev_buffer(scp, arr, | |
1820 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); | |
1821 | } | |
1822 | ||
cbf67842 | 1823 | static int check_device_access_params(struct scsi_cmnd *scp, |
19789100 | 1824 | unsigned long long lba, unsigned int num) |
1da177e4 | 1825 | { |
c65b1445 | 1826 | if (lba + num > sdebug_capacity) { |
cbf67842 | 1827 | mk_sense_buffer(scp, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, 0); |
1da177e4 LT |
1828 | return check_condition_result; |
1829 | } | |
c65b1445 DG |
1830 | /* transfer length excessive (tie in to block limits VPD page) */ |
1831 | if (num > sdebug_store_sectors) { | |
cbf67842 | 1832 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
c65b1445 DG |
1833 | return check_condition_result; |
1834 | } | |
19789100 FT |
1835 | return 0; |
1836 | } | |
1837 | ||
a4517511 | 1838 | /* Returns number of bytes copied or -1 if error. */ |
19789100 | 1839 | static int do_device_access(struct scsi_cmnd *scmd, |
19789100 FT |
1840 | unsigned long long lba, unsigned int num, int write) |
1841 | { | |
1842 | int ret; | |
a361cc00 | 1843 | unsigned long long block, rest = 0; |
a4517511 AM |
1844 | struct scsi_data_buffer *sdb; |
1845 | enum dma_data_direction dir; | |
1846 | size_t (*func)(struct scatterlist *, unsigned int, void *, size_t, | |
1847 | off_t); | |
1848 | ||
1849 | if (write) { | |
1850 | sdb = scsi_out(scmd); | |
1851 | dir = DMA_TO_DEVICE; | |
1852 | func = sg_pcopy_to_buffer; | |
1853 | } else { | |
1854 | sdb = scsi_in(scmd); | |
1855 | dir = DMA_FROM_DEVICE; | |
1856 | func = sg_pcopy_from_buffer; | |
1857 | } | |
19789100 | 1858 | |
a4517511 AM |
1859 | if (!sdb->length) |
1860 | return 0; | |
1861 | if (!(scsi_bidi_cmnd(scmd) || scmd->sc_data_direction == dir)) | |
1862 | return -1; | |
19789100 FT |
1863 | |
1864 | block = do_div(lba, sdebug_store_sectors); | |
1865 | if (block + num > sdebug_store_sectors) | |
1866 | rest = block + num - sdebug_store_sectors; | |
1867 | ||
a4517511 AM |
1868 | ret = func(sdb->table.sgl, sdb->table.nents, |
1869 | fake_storep + (block * scsi_debug_sector_size), | |
1870 | (num - rest) * scsi_debug_sector_size, 0); | |
1871 | if (ret != (num - rest) * scsi_debug_sector_size) | |
1872 | return ret; | |
1873 | ||
1874 | if (rest) { | |
1875 | ret += func(sdb->table.sgl, sdb->table.nents, | |
1876 | fake_storep, rest * scsi_debug_sector_size, | |
1877 | (num - rest) * scsi_debug_sector_size); | |
1878 | } | |
19789100 FT |
1879 | |
1880 | return ret; | |
1881 | } | |
1882 | ||
51d648af | 1883 | static __be16 dif_compute_csum(const void *buf, int len) |
beb40ea4 | 1884 | { |
51d648af | 1885 | __be16 csum; |
beb40ea4 | 1886 | |
51d648af AM |
1887 | if (scsi_debug_guard) |
1888 | csum = (__force __be16)ip_compute_csum(buf, len); | |
1889 | else | |
beb40ea4 | 1890 | csum = cpu_to_be16(crc_t10dif(buf, len)); |
51d648af | 1891 | |
beb40ea4 AM |
1892 | return csum; |
1893 | } | |
1894 | ||
1895 | static int dif_verify(struct sd_dif_tuple *sdt, const void *data, | |
1896 | sector_t sector, u32 ei_lba) | |
1897 | { | |
51d648af | 1898 | __be16 csum = dif_compute_csum(data, scsi_debug_sector_size); |
beb40ea4 AM |
1899 | |
1900 | if (sdt->guard_tag != csum) { | |
1901 | pr_err("%s: GUARD check failed on sector %lu rcvd 0x%04x, data 0x%04x\n", | |
1902 | __func__, | |
1903 | (unsigned long)sector, | |
1904 | be16_to_cpu(sdt->guard_tag), | |
1905 | be16_to_cpu(csum)); | |
1906 | return 0x01; | |
1907 | } | |
1908 | if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION && | |
1909 | be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) { | |
1910 | pr_err("%s: REF check failed on sector %lu\n", | |
1911 | __func__, (unsigned long)sector); | |
1912 | return 0x03; | |
1913 | } | |
1914 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
1915 | be32_to_cpu(sdt->ref_tag) != ei_lba) { | |
1916 | pr_err("%s: REF check failed on sector %lu\n", | |
1917 | __func__, (unsigned long)sector); | |
beb40ea4 AM |
1918 | return 0x03; |
1919 | } | |
1920 | return 0; | |
1921 | } | |
1922 | ||
bb8c063c | 1923 | static void dif_copy_prot(struct scsi_cmnd *SCpnt, sector_t sector, |
65f72f2a | 1924 | unsigned int sectors, bool read) |
c6a44287 | 1925 | { |
be4e11be | 1926 | size_t resid; |
c6a44287 | 1927 | void *paddr; |
14faa944 | 1928 | const void *dif_store_end = dif_storep + sdebug_store_sectors; |
be4e11be | 1929 | struct sg_mapping_iter miter; |
c6a44287 | 1930 | |
e18d8bea AM |
1931 | /* Bytes of protection data to copy into sgl */ |
1932 | resid = sectors * sizeof(*dif_storep); | |
c6a44287 | 1933 | |
be4e11be AM |
1934 | sg_miter_start(&miter, scsi_prot_sglist(SCpnt), |
1935 | scsi_prot_sg_count(SCpnt), SG_MITER_ATOMIC | | |
1936 | (read ? SG_MITER_TO_SG : SG_MITER_FROM_SG)); | |
1937 | ||
1938 | while (sg_miter_next(&miter) && resid > 0) { | |
1939 | size_t len = min(miter.length, resid); | |
14faa944 | 1940 | void *start = dif_store(sector); |
be4e11be | 1941 | size_t rest = 0; |
14faa944 AM |
1942 | |
1943 | if (dif_store_end < start + len) | |
1944 | rest = start + len - dif_store_end; | |
c6a44287 | 1945 | |
be4e11be | 1946 | paddr = miter.addr; |
14faa944 | 1947 | |
65f72f2a AM |
1948 | if (read) |
1949 | memcpy(paddr, start, len - rest); | |
1950 | else | |
1951 | memcpy(start, paddr, len - rest); | |
1952 | ||
1953 | if (rest) { | |
1954 | if (read) | |
1955 | memcpy(paddr + len - rest, dif_storep, rest); | |
1956 | else | |
1957 | memcpy(dif_storep, paddr + len - rest, rest); | |
1958 | } | |
c6a44287 | 1959 | |
e18d8bea | 1960 | sector += len / sizeof(*dif_storep); |
c6a44287 | 1961 | resid -= len; |
c6a44287 | 1962 | } |
be4e11be | 1963 | sg_miter_stop(&miter); |
bb8c063c AM |
1964 | } |
1965 | ||
1966 | static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, | |
1967 | unsigned int sectors, u32 ei_lba) | |
1968 | { | |
1969 | unsigned int i; | |
1970 | struct sd_dif_tuple *sdt; | |
1971 | sector_t sector; | |
1972 | ||
c45eabec | 1973 | for (i = 0; i < sectors; i++, ei_lba++) { |
bb8c063c AM |
1974 | int ret; |
1975 | ||
1976 | sector = start_sec + i; | |
1977 | sdt = dif_store(sector); | |
1978 | ||
51d648af | 1979 | if (sdt->app_tag == cpu_to_be16(0xffff)) |
bb8c063c AM |
1980 | continue; |
1981 | ||
1982 | ret = dif_verify(sdt, fake_store(sector), sector, ei_lba); | |
1983 | if (ret) { | |
1984 | dif_errors++; | |
1985 | return ret; | |
1986 | } | |
bb8c063c | 1987 | } |
c6a44287 | 1988 | |
65f72f2a | 1989 | dif_copy_prot(SCpnt, start_sec, sectors, true); |
c6a44287 MP |
1990 | dix_reads++; |
1991 | ||
1992 | return 0; | |
1993 | } | |
1994 | ||
19789100 | 1995 | static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba, |
cbf67842 | 1996 | unsigned int num, u32 ei_lba) |
19789100 FT |
1997 | { |
1998 | unsigned long iflags; | |
1999 | int ret; | |
2000 | ||
cbf67842 | 2001 | ret = check_device_access_params(SCpnt, lba, num); |
19789100 FT |
2002 | if (ret) |
2003 | return ret; | |
2004 | ||
1da177e4 | 2005 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
32f7ef73 | 2006 | (lba <= (OPT_MEDIUM_ERR_ADDR + OPT_MEDIUM_ERR_NUM - 1)) && |
c65b1445 DG |
2007 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { |
2008 | /* claim unrecoverable read error */ | |
cbf67842 | 2009 | mk_sense_buffer(SCpnt, MEDIUM_ERROR, UNRECOVERED_READ_ERR, 0); |
c65b1445 | 2010 | /* set info field and valid bit for fixed descriptor */ |
cbf67842 DG |
2011 | if (0x70 == (SCpnt->sense_buffer[0] & 0x7f)) { |
2012 | SCpnt->sense_buffer[0] |= 0x80; /* Valid bit */ | |
32f7ef73 DG |
2013 | ret = (lba < OPT_MEDIUM_ERR_ADDR) |
2014 | ? OPT_MEDIUM_ERR_ADDR : (int)lba; | |
cbf67842 DG |
2015 | SCpnt->sense_buffer[3] = (ret >> 24) & 0xff; |
2016 | SCpnt->sense_buffer[4] = (ret >> 16) & 0xff; | |
2017 | SCpnt->sense_buffer[5] = (ret >> 8) & 0xff; | |
2018 | SCpnt->sense_buffer[6] = ret & 0xff; | |
c65b1445 | 2019 | } |
a87e3a67 | 2020 | scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); |
1da177e4 LT |
2021 | return check_condition_result; |
2022 | } | |
c6a44287 | 2023 | |
6c78cc06 AM |
2024 | read_lock_irqsave(&atomic_rw, iflags); |
2025 | ||
c6a44287 MP |
2026 | /* DIX + T10 DIF */ |
2027 | if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { | |
395cef03 | 2028 | int prot_ret = prot_verify_read(SCpnt, lba, num, ei_lba); |
c6a44287 MP |
2029 | |
2030 | if (prot_ret) { | |
6c78cc06 | 2031 | read_unlock_irqrestore(&atomic_rw, iflags); |
cbf67842 | 2032 | mk_sense_buffer(SCpnt, ABORTED_COMMAND, 0x10, prot_ret); |
c6a44287 MP |
2033 | return illegal_condition_result; |
2034 | } | |
2035 | } | |
2036 | ||
cbf67842 | 2037 | ret = do_device_access(SCpnt, lba, num, 0); |
1da177e4 | 2038 | read_unlock_irqrestore(&atomic_rw, iflags); |
a4517511 AM |
2039 | if (ret == -1) |
2040 | return DID_ERROR << 16; | |
2041 | ||
2042 | scsi_in(SCpnt)->resid = scsi_bufflen(SCpnt) - ret; | |
2043 | ||
2044 | return 0; | |
1da177e4 LT |
2045 | } |
2046 | ||
c6a44287 MP |
2047 | void dump_sector(unsigned char *buf, int len) |
2048 | { | |
cbf67842 | 2049 | int i, j, n; |
c6a44287 | 2050 | |
cbf67842 | 2051 | pr_err(">>> Sector Dump <<<\n"); |
c6a44287 | 2052 | for (i = 0 ; i < len ; i += 16) { |
cbf67842 | 2053 | char b[128]; |
c6a44287 | 2054 | |
cbf67842 | 2055 | for (j = 0, n = 0; j < 16; j++) { |
c6a44287 | 2056 | unsigned char c = buf[i+j]; |
cbf67842 | 2057 | |
c6a44287 | 2058 | if (c >= 0x20 && c < 0x7e) |
cbf67842 DG |
2059 | n += scnprintf(b + n, sizeof(b) - n, |
2060 | " %c ", buf[i+j]); | |
c6a44287 | 2061 | else |
cbf67842 DG |
2062 | n += scnprintf(b + n, sizeof(b) - n, |
2063 | "%02x ", buf[i+j]); | |
c6a44287 | 2064 | } |
cbf67842 | 2065 | pr_err("%04d: %s\n", i, b); |
c6a44287 MP |
2066 | } |
2067 | } | |
2068 | ||
2069 | static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, | |
395cef03 | 2070 | unsigned int sectors, u32 ei_lba) |
c6a44287 | 2071 | { |
be4e11be | 2072 | int ret; |
c6a44287 | 2073 | struct sd_dif_tuple *sdt; |
be4e11be | 2074 | void *daddr; |
65f72f2a | 2075 | sector_t sector = start_sec; |
c6a44287 | 2076 | int ppage_offset; |
be4e11be AM |
2077 | int dpage_offset; |
2078 | struct sg_mapping_iter diter; | |
2079 | struct sg_mapping_iter piter; | |
c6a44287 | 2080 | |
c6a44287 MP |
2081 | BUG_ON(scsi_sg_count(SCpnt) == 0); |
2082 | BUG_ON(scsi_prot_sg_count(SCpnt) == 0); | |
2083 | ||
be4e11be AM |
2084 | sg_miter_start(&piter, scsi_prot_sglist(SCpnt), |
2085 | scsi_prot_sg_count(SCpnt), | |
2086 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); | |
2087 | sg_miter_start(&diter, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), | |
2088 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); | |
2089 | ||
2090 | /* For each protection page */ | |
2091 | while (sg_miter_next(&piter)) { | |
2092 | dpage_offset = 0; | |
2093 | if (WARN_ON(!sg_miter_next(&diter))) { | |
2094 | ret = 0x01; | |
2095 | goto out; | |
2096 | } | |
c6a44287 | 2097 | |
be4e11be AM |
2098 | for (ppage_offset = 0; ppage_offset < piter.length; |
2099 | ppage_offset += sizeof(struct sd_dif_tuple)) { | |
c6a44287 | 2100 | /* If we're at the end of the current |
be4e11be | 2101 | * data page advance to the next one |
c6a44287 | 2102 | */ |
be4e11be AM |
2103 | if (dpage_offset >= diter.length) { |
2104 | if (WARN_ON(!sg_miter_next(&diter))) { | |
2105 | ret = 0x01; | |
2106 | goto out; | |
2107 | } | |
2108 | dpage_offset = 0; | |
c6a44287 MP |
2109 | } |
2110 | ||
be4e11be AM |
2111 | sdt = piter.addr + ppage_offset; |
2112 | daddr = diter.addr + dpage_offset; | |
c6a44287 | 2113 | |
be4e11be | 2114 | ret = dif_verify(sdt, daddr, sector, ei_lba); |
beb40ea4 | 2115 | if (ret) { |
be4e11be | 2116 | dump_sector(daddr, scsi_debug_sector_size); |
395cef03 MP |
2117 | goto out; |
2118 | } | |
2119 | ||
c6a44287 | 2120 | sector++; |
395cef03 | 2121 | ei_lba++; |
be4e11be | 2122 | dpage_offset += scsi_debug_sector_size; |
c6a44287 | 2123 | } |
be4e11be AM |
2124 | diter.consumed = dpage_offset; |
2125 | sg_miter_stop(&diter); | |
c6a44287 | 2126 | } |
be4e11be | 2127 | sg_miter_stop(&piter); |
c6a44287 | 2128 | |
65f72f2a | 2129 | dif_copy_prot(SCpnt, start_sec, sectors, false); |
c6a44287 MP |
2130 | dix_writes++; |
2131 | ||
2132 | return 0; | |
2133 | ||
2134 | out: | |
2135 | dif_errors++; | |
be4e11be AM |
2136 | sg_miter_stop(&diter); |
2137 | sg_miter_stop(&piter); | |
c6a44287 MP |
2138 | return ret; |
2139 | } | |
2140 | ||
b90ebc3d AM |
2141 | static unsigned long lba_to_map_index(sector_t lba) |
2142 | { | |
2143 | if (scsi_debug_unmap_alignment) { | |
2144 | lba += scsi_debug_unmap_granularity - | |
2145 | scsi_debug_unmap_alignment; | |
2146 | } | |
2147 | do_div(lba, scsi_debug_unmap_granularity); | |
2148 | ||
2149 | return lba; | |
2150 | } | |
2151 | ||
2152 | static sector_t map_index_to_lba(unsigned long index) | |
44d92694 | 2153 | { |
a027b5b9 AM |
2154 | sector_t lba = index * scsi_debug_unmap_granularity; |
2155 | ||
2156 | if (scsi_debug_unmap_alignment) { | |
2157 | lba -= scsi_debug_unmap_granularity - | |
2158 | scsi_debug_unmap_alignment; | |
2159 | } | |
2160 | ||
2161 | return lba; | |
b90ebc3d | 2162 | } |
44d92694 | 2163 | |
b90ebc3d AM |
2164 | static unsigned int map_state(sector_t lba, unsigned int *num) |
2165 | { | |
2166 | sector_t end; | |
2167 | unsigned int mapped; | |
2168 | unsigned long index; | |
2169 | unsigned long next; | |
44d92694 | 2170 | |
b90ebc3d AM |
2171 | index = lba_to_map_index(lba); |
2172 | mapped = test_bit(index, map_storep); | |
44d92694 MP |
2173 | |
2174 | if (mapped) | |
b90ebc3d | 2175 | next = find_next_zero_bit(map_storep, map_size, index); |
44d92694 | 2176 | else |
b90ebc3d | 2177 | next = find_next_bit(map_storep, map_size, index); |
44d92694 | 2178 | |
b90ebc3d | 2179 | end = min_t(sector_t, sdebug_store_sectors, map_index_to_lba(next)); |
44d92694 MP |
2180 | *num = end - lba; |
2181 | ||
2182 | return mapped; | |
2183 | } | |
2184 | ||
2185 | static void map_region(sector_t lba, unsigned int len) | |
2186 | { | |
44d92694 MP |
2187 | sector_t end = lba + len; |
2188 | ||
44d92694 | 2189 | while (lba < end) { |
b90ebc3d | 2190 | unsigned long index = lba_to_map_index(lba); |
44d92694 | 2191 | |
b90ebc3d AM |
2192 | if (index < map_size) |
2193 | set_bit(index, map_storep); | |
44d92694 | 2194 | |
b90ebc3d | 2195 | lba = map_index_to_lba(index + 1); |
44d92694 MP |
2196 | } |
2197 | } | |
2198 | ||
2199 | static void unmap_region(sector_t lba, unsigned int len) | |
2200 | { | |
44d92694 MP |
2201 | sector_t end = lba + len; |
2202 | ||
44d92694 | 2203 | while (lba < end) { |
b90ebc3d | 2204 | unsigned long index = lba_to_map_index(lba); |
44d92694 | 2205 | |
b90ebc3d AM |
2206 | if (lba == map_index_to_lba(index) && |
2207 | lba + scsi_debug_unmap_granularity <= end && | |
2208 | index < map_size) { | |
2209 | clear_bit(index, map_storep); | |
2210 | if (scsi_debug_lbprz) { | |
be1dd78d | 2211 | memset(fake_storep + |
cc34a8e6 AM |
2212 | lba * scsi_debug_sector_size, 0, |
2213 | scsi_debug_sector_size * | |
2214 | scsi_debug_unmap_granularity); | |
b90ebc3d | 2215 | } |
e9926b43 AM |
2216 | if (dif_storep) { |
2217 | memset(dif_storep + lba, 0xff, | |
2218 | sizeof(*dif_storep) * | |
2219 | scsi_debug_unmap_granularity); | |
2220 | } | |
be1dd78d | 2221 | } |
b90ebc3d | 2222 | lba = map_index_to_lba(index + 1); |
44d92694 MP |
2223 | } |
2224 | } | |
2225 | ||
19789100 | 2226 | static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba, |
cbf67842 | 2227 | unsigned int num, u32 ei_lba) |
1da177e4 LT |
2228 | { |
2229 | unsigned long iflags; | |
19789100 | 2230 | int ret; |
1da177e4 | 2231 | |
cbf67842 | 2232 | ret = check_device_access_params(SCpnt, lba, num); |
19789100 FT |
2233 | if (ret) |
2234 | return ret; | |
1da177e4 | 2235 | |
6c78cc06 AM |
2236 | write_lock_irqsave(&atomic_rw, iflags); |
2237 | ||
c6a44287 MP |
2238 | /* DIX + T10 DIF */ |
2239 | if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { | |
395cef03 | 2240 | int prot_ret = prot_verify_write(SCpnt, lba, num, ei_lba); |
c6a44287 MP |
2241 | |
2242 | if (prot_ret) { | |
6c78cc06 | 2243 | write_unlock_irqrestore(&atomic_rw, iflags); |
cbf67842 DG |
2244 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, 0x10, |
2245 | prot_ret); | |
c6a44287 MP |
2246 | return illegal_condition_result; |
2247 | } | |
2248 | } | |
2249 | ||
cbf67842 | 2250 | ret = do_device_access(SCpnt, lba, num, 1); |
9ed8d3dc | 2251 | if (scsi_debug_lbp()) |
44d92694 | 2252 | map_region(lba, num); |
1da177e4 | 2253 | write_unlock_irqrestore(&atomic_rw, iflags); |
19789100 | 2254 | if (-1 == ret) |
1da177e4 | 2255 | return (DID_ERROR << 16); |
597136ab | 2256 | else if ((ret < (num * scsi_debug_sector_size)) && |
1da177e4 | 2257 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
cbf67842 DG |
2258 | sdev_printk(KERN_INFO, SCpnt->device, |
2259 | "%s: write: cdb indicated=%u, IO sent=%d bytes\n", | |
2260 | my_name, num * scsi_debug_sector_size, ret); | |
44d92694 MP |
2261 | |
2262 | return 0; | |
2263 | } | |
2264 | ||
2265 | static int resp_write_same(struct scsi_cmnd *scmd, unsigned long long lba, | |
cbf67842 | 2266 | unsigned int num, u32 ei_lba, unsigned int unmap) |
44d92694 MP |
2267 | { |
2268 | unsigned long iflags; | |
2269 | unsigned long long i; | |
2270 | int ret; | |
2271 | ||
cbf67842 | 2272 | ret = check_device_access_params(scmd, lba, num); |
44d92694 MP |
2273 | if (ret) |
2274 | return ret; | |
2275 | ||
5b94e232 | 2276 | if (num > scsi_debug_write_same_length) { |
cbf67842 | 2277 | mk_sense_buffer(scmd, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
5b94e232 MP |
2278 | 0); |
2279 | return check_condition_result; | |
2280 | } | |
2281 | ||
44d92694 MP |
2282 | write_lock_irqsave(&atomic_rw, iflags); |
2283 | ||
9ed8d3dc | 2284 | if (unmap && scsi_debug_lbp()) { |
44d92694 MP |
2285 | unmap_region(lba, num); |
2286 | goto out; | |
2287 | } | |
2288 | ||
2289 | /* Else fetch one logical block */ | |
2290 | ret = fetch_to_dev_buffer(scmd, | |
2291 | fake_storep + (lba * scsi_debug_sector_size), | |
2292 | scsi_debug_sector_size); | |
2293 | ||
2294 | if (-1 == ret) { | |
2295 | write_unlock_irqrestore(&atomic_rw, iflags); | |
2296 | return (DID_ERROR << 16); | |
2297 | } else if ((ret < (num * scsi_debug_sector_size)) && | |
2298 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
cbf67842 DG |
2299 | sdev_printk(KERN_INFO, scmd->device, |
2300 | "%s: %s: cdb indicated=%u, IO sent=%d bytes\n", | |
2301 | my_name, "write same", | |
2302 | num * scsi_debug_sector_size, ret); | |
44d92694 MP |
2303 | |
2304 | /* Copy first sector to remaining blocks */ | |
2305 | for (i = 1 ; i < num ; i++) | |
2306 | memcpy(fake_storep + ((lba + i) * scsi_debug_sector_size), | |
2307 | fake_storep + (lba * scsi_debug_sector_size), | |
2308 | scsi_debug_sector_size); | |
2309 | ||
9ed8d3dc | 2310 | if (scsi_debug_lbp()) |
44d92694 MP |
2311 | map_region(lba, num); |
2312 | out: | |
2313 | write_unlock_irqrestore(&atomic_rw, iflags); | |
2314 | ||
1da177e4 LT |
2315 | return 0; |
2316 | } | |
2317 | ||
44d92694 MP |
2318 | struct unmap_block_desc { |
2319 | __be64 lba; | |
2320 | __be32 blocks; | |
2321 | __be32 __reserved; | |
2322 | }; | |
2323 | ||
2324 | static int resp_unmap(struct scsi_cmnd * scmd, struct sdebug_dev_info * devip) | |
2325 | { | |
2326 | unsigned char *buf; | |
2327 | struct unmap_block_desc *desc; | |
2328 | unsigned int i, payload_len, descriptors; | |
2329 | int ret; | |
6c78cc06 | 2330 | unsigned long iflags; |
44d92694 | 2331 | |
cbf67842 | 2332 | ret = check_readiness(scmd, UAS_ONLY, devip); |
44d92694 MP |
2333 | if (ret) |
2334 | return ret; | |
2335 | ||
2336 | payload_len = get_unaligned_be16(&scmd->cmnd[7]); | |
2337 | BUG_ON(scsi_bufflen(scmd) != payload_len); | |
2338 | ||
2339 | descriptors = (payload_len - 8) / 16; | |
2340 | ||
2341 | buf = kmalloc(scsi_bufflen(scmd), GFP_ATOMIC); | |
2342 | if (!buf) | |
2343 | return check_condition_result; | |
2344 | ||
2345 | scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd)); | |
2346 | ||
2347 | BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2); | |
2348 | BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16); | |
2349 | ||
2350 | desc = (void *)&buf[8]; | |
2351 | ||
6c78cc06 AM |
2352 | write_lock_irqsave(&atomic_rw, iflags); |
2353 | ||
44d92694 MP |
2354 | for (i = 0 ; i < descriptors ; i++) { |
2355 | unsigned long long lba = get_unaligned_be64(&desc[i].lba); | |
2356 | unsigned int num = get_unaligned_be32(&desc[i].blocks); | |
2357 | ||
cbf67842 | 2358 | ret = check_device_access_params(scmd, lba, num); |
44d92694 MP |
2359 | if (ret) |
2360 | goto out; | |
2361 | ||
2362 | unmap_region(lba, num); | |
2363 | } | |
2364 | ||
2365 | ret = 0; | |
2366 | ||
2367 | out: | |
6c78cc06 | 2368 | write_unlock_irqrestore(&atomic_rw, iflags); |
44d92694 MP |
2369 | kfree(buf); |
2370 | ||
2371 | return ret; | |
2372 | } | |
2373 | ||
2374 | #define SDEBUG_GET_LBA_STATUS_LEN 32 | |
2375 | ||
2376 | static int resp_get_lba_status(struct scsi_cmnd * scmd, | |
2377 | struct sdebug_dev_info * devip) | |
2378 | { | |
2379 | unsigned long long lba; | |
2380 | unsigned int alloc_len, mapped, num; | |
2381 | unsigned char arr[SDEBUG_GET_LBA_STATUS_LEN]; | |
2382 | int ret; | |
2383 | ||
cbf67842 | 2384 | ret = check_readiness(scmd, UAS_ONLY, devip); |
44d92694 MP |
2385 | if (ret) |
2386 | return ret; | |
2387 | ||
2388 | lba = get_unaligned_be64(&scmd->cmnd[2]); | |
2389 | alloc_len = get_unaligned_be32(&scmd->cmnd[10]); | |
2390 | ||
2391 | if (alloc_len < 24) | |
2392 | return 0; | |
2393 | ||
cbf67842 | 2394 | ret = check_device_access_params(scmd, lba, 1); |
44d92694 MP |
2395 | if (ret) |
2396 | return ret; | |
2397 | ||
2398 | mapped = map_state(lba, &num); | |
2399 | ||
2400 | memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN); | |
de13e965 | 2401 | put_unaligned_be32(20, &arr[0]); /* Parameter Data Length */ |
44d92694 MP |
2402 | put_unaligned_be64(lba, &arr[8]); /* LBA */ |
2403 | put_unaligned_be32(num, &arr[16]); /* Number of blocks */ | |
2404 | arr[20] = !mapped; /* mapped = 0, unmapped = 1 */ | |
2405 | ||
2406 | return fill_from_dev_buffer(scmd, arr, SDEBUG_GET_LBA_STATUS_LEN); | |
2407 | } | |
2408 | ||
c65b1445 | 2409 | #define SDEBUG_RLUN_ARR_SZ 256 |
1da177e4 LT |
2410 | |
2411 | static int resp_report_luns(struct scsi_cmnd * scp, | |
2412 | struct sdebug_dev_info * devip) | |
2413 | { | |
2414 | unsigned int alloc_len; | |
9cb78c16 HR |
2415 | int lun_cnt, i, upper, num, n; |
2416 | u64 wlun, lun; | |
01123ef4 | 2417 | unsigned char *cmd = scp->cmnd; |
1da177e4 LT |
2418 | int select_report = (int)cmd[2]; |
2419 | struct scsi_lun *one_lun; | |
2420 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; | |
c65b1445 | 2421 | unsigned char * max_addr; |
1da177e4 LT |
2422 | |
2423 | alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); | |
c65b1445 | 2424 | if ((alloc_len < 4) || (select_report > 2)) { |
cbf67842 | 2425 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1da177e4 LT |
2426 | 0); |
2427 | return check_condition_result; | |
2428 | } | |
2429 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ | |
2430 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); | |
2431 | lun_cnt = scsi_debug_max_luns; | |
c65b1445 DG |
2432 | if (1 == select_report) |
2433 | lun_cnt = 0; | |
2434 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) | |
2435 | --lun_cnt; | |
2436 | wlun = (select_report > 0) ? 1 : 0; | |
2437 | num = lun_cnt + wlun; | |
2438 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; | |
2439 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; | |
2440 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / | |
2441 | sizeof(struct scsi_lun)), num); | |
2442 | if (n < num) { | |
2443 | wlun = 0; | |
2444 | lun_cnt = n; | |
2445 | } | |
1da177e4 | 2446 | one_lun = (struct scsi_lun *) &arr[8]; |
c65b1445 DG |
2447 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
2448 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); | |
2449 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); | |
2450 | i++, lun++) { | |
2451 | upper = (lun >> 8) & 0x3f; | |
1da177e4 LT |
2452 | if (upper) |
2453 | one_lun[i].scsi_lun[0] = | |
2454 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); | |
c65b1445 DG |
2455 | one_lun[i].scsi_lun[1] = lun & 0xff; |
2456 | } | |
2457 | if (wlun) { | |
2458 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; | |
2459 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; | |
2460 | i++; | |
1da177e4 | 2461 | } |
c65b1445 | 2462 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
1da177e4 LT |
2463 | return fill_from_dev_buffer(scp, arr, |
2464 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); | |
2465 | } | |
2466 | ||
c639d14e FT |
2467 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
2468 | unsigned int num, struct sdebug_dev_info *devip) | |
2469 | { | |
be4e11be | 2470 | int j; |
c639d14e FT |
2471 | unsigned char *kaddr, *buf; |
2472 | unsigned int offset; | |
c639d14e | 2473 | struct scsi_data_buffer *sdb = scsi_in(scp); |
be4e11be | 2474 | struct sg_mapping_iter miter; |
c639d14e FT |
2475 | |
2476 | /* better not to use temporary buffer. */ | |
2477 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); | |
c5af0db9 | 2478 | if (!buf) { |
cbf67842 | 2479 | mk_sense_buffer(scp, NOT_READY, |
c5af0db9 AM |
2480 | LOGICAL_UNIT_COMMUNICATION_FAILURE, 0); |
2481 | return check_condition_result; | |
2482 | } | |
c639d14e | 2483 | |
21a61829 | 2484 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
c639d14e FT |
2485 | |
2486 | offset = 0; | |
be4e11be AM |
2487 | sg_miter_start(&miter, sdb->table.sgl, sdb->table.nents, |
2488 | SG_MITER_ATOMIC | SG_MITER_TO_SG); | |
c639d14e | 2489 | |
be4e11be AM |
2490 | while (sg_miter_next(&miter)) { |
2491 | kaddr = miter.addr; | |
2492 | for (j = 0; j < miter.length; j++) | |
2493 | *(kaddr + j) ^= *(buf + offset + j); | |
c639d14e | 2494 | |
be4e11be | 2495 | offset += miter.length; |
c639d14e | 2496 | } |
be4e11be | 2497 | sg_miter_stop(&miter); |
c639d14e FT |
2498 | kfree(buf); |
2499 | ||
be4e11be | 2500 | return 0; |
c639d14e FT |
2501 | } |
2502 | ||
cbf67842 DG |
2503 | /* When timer or tasklet goes off this function is called. */ |
2504 | static void sdebug_q_cmd_complete(unsigned long indx) | |
1da177e4 | 2505 | { |
cbf67842 DG |
2506 | int qa_indx; |
2507 | int retiring = 0; | |
1da177e4 | 2508 | unsigned long iflags; |
cbf67842 DG |
2509 | struct sdebug_queued_cmd *sqcp; |
2510 | struct scsi_cmnd *scp; | |
2511 | struct sdebug_dev_info *devip; | |
1da177e4 | 2512 | |
cbf67842 DG |
2513 | atomic_inc(&sdebug_completions); |
2514 | qa_indx = indx; | |
2515 | if ((qa_indx < 0) || (qa_indx >= SCSI_DEBUG_CANQUEUE)) { | |
2516 | pr_err("%s: wild qa_indx=%d\n", __func__, qa_indx); | |
1da177e4 LT |
2517 | return; |
2518 | } | |
2519 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
cbf67842 DG |
2520 | sqcp = &queued_arr[qa_indx]; |
2521 | scp = sqcp->a_cmnd; | |
2522 | if (NULL == scp) { | |
2523 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2524 | pr_err("%s: scp is NULL\n", __func__); | |
2525 | return; | |
2526 | } | |
2527 | devip = (struct sdebug_dev_info *)scp->device->hostdata; | |
2528 | if (devip) | |
2529 | atomic_dec(&devip->num_in_q); | |
2530 | else | |
2531 | pr_err("%s: devip=NULL\n", __func__); | |
2532 | if (atomic_read(&retired_max_queue) > 0) | |
2533 | retiring = 1; | |
2534 | ||
2535 | sqcp->a_cmnd = NULL; | |
2536 | if (!test_and_clear_bit(qa_indx, queued_in_use_bm)) { | |
1da177e4 | 2537 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
cbf67842 | 2538 | pr_err("%s: Unexpected completion\n", __func__); |
1da177e4 LT |
2539 | return; |
2540 | } | |
cbf67842 DG |
2541 | |
2542 | if (unlikely(retiring)) { /* user has reduced max_queue */ | |
2543 | int k, retval; | |
2544 | ||
2545 | retval = atomic_read(&retired_max_queue); | |
2546 | if (qa_indx >= retval) { | |
2547 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2548 | pr_err("%s: index %d too large\n", __func__, retval); | |
2549 | return; | |
2550 | } | |
2551 | k = find_last_bit(queued_in_use_bm, retval); | |
2552 | if ((k < scsi_debug_max_queue) || (k == retval)) | |
2553 | atomic_set(&retired_max_queue, 0); | |
2554 | else | |
2555 | atomic_set(&retired_max_queue, k + 1); | |
1da177e4 | 2556 | } |
1da177e4 | 2557 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
cbf67842 | 2558 | scp->scsi_done(scp); /* callback to mid level */ |
1da177e4 LT |
2559 | } |
2560 | ||
cbf67842 DG |
2561 | /* When high resolution timer goes off this function is called. */ |
2562 | static enum hrtimer_restart | |
2563 | sdebug_q_cmd_hrt_complete(struct hrtimer *timer) | |
2564 | { | |
2565 | int qa_indx; | |
2566 | int retiring = 0; | |
2567 | unsigned long iflags; | |
2568 | struct sdebug_hrtimer *sd_hrtp = (struct sdebug_hrtimer *)timer; | |
2569 | struct sdebug_queued_cmd *sqcp; | |
2570 | struct scsi_cmnd *scp; | |
2571 | struct sdebug_dev_info *devip; | |
2572 | ||
2573 | atomic_inc(&sdebug_completions); | |
2574 | qa_indx = sd_hrtp->qa_indx; | |
2575 | if ((qa_indx < 0) || (qa_indx >= SCSI_DEBUG_CANQUEUE)) { | |
2576 | pr_err("%s: wild qa_indx=%d\n", __func__, qa_indx); | |
2577 | goto the_end; | |
2578 | } | |
2579 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2580 | sqcp = &queued_arr[qa_indx]; | |
2581 | scp = sqcp->a_cmnd; | |
2582 | if (NULL == scp) { | |
2583 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2584 | pr_err("%s: scp is NULL\n", __func__); | |
2585 | goto the_end; | |
2586 | } | |
2587 | devip = (struct sdebug_dev_info *)scp->device->hostdata; | |
2588 | if (devip) | |
2589 | atomic_dec(&devip->num_in_q); | |
2590 | else | |
2591 | pr_err("%s: devip=NULL\n", __func__); | |
2592 | if (atomic_read(&retired_max_queue) > 0) | |
2593 | retiring = 1; | |
2594 | ||
2595 | sqcp->a_cmnd = NULL; | |
2596 | if (!test_and_clear_bit(qa_indx, queued_in_use_bm)) { | |
2597 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2598 | pr_err("%s: Unexpected completion\n", __func__); | |
2599 | goto the_end; | |
2600 | } | |
2601 | ||
2602 | if (unlikely(retiring)) { /* user has reduced max_queue */ | |
2603 | int k, retval; | |
2604 | ||
2605 | retval = atomic_read(&retired_max_queue); | |
2606 | if (qa_indx >= retval) { | |
2607 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2608 | pr_err("%s: index %d too large\n", __func__, retval); | |
2609 | goto the_end; | |
2610 | } | |
2611 | k = find_last_bit(queued_in_use_bm, retval); | |
2612 | if ((k < scsi_debug_max_queue) || (k == retval)) | |
2613 | atomic_set(&retired_max_queue, 0); | |
2614 | else | |
2615 | atomic_set(&retired_max_queue, k + 1); | |
2616 | } | |
2617 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2618 | scp->scsi_done(scp); /* callback to mid level */ | |
2619 | the_end: | |
2620 | return HRTIMER_NORESTART; | |
2621 | } | |
1da177e4 | 2622 | |
8dea0d02 FT |
2623 | static struct sdebug_dev_info * |
2624 | sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags) | |
5cb2fc06 FT |
2625 | { |
2626 | struct sdebug_dev_info *devip; | |
2627 | ||
2628 | devip = kzalloc(sizeof(*devip), flags); | |
2629 | if (devip) { | |
2630 | devip->sdbg_host = sdbg_host; | |
2631 | list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); | |
2632 | } | |
2633 | return devip; | |
2634 | } | |
2635 | ||
1da177e4 LT |
2636 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
2637 | { | |
2638 | struct sdebug_host_info * sdbg_host; | |
2639 | struct sdebug_dev_info * open_devip = NULL; | |
2640 | struct sdebug_dev_info * devip = | |
2641 | (struct sdebug_dev_info *)sdev->hostdata; | |
2642 | ||
2643 | if (devip) | |
2644 | return devip; | |
d1e4c9c5 FT |
2645 | sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
2646 | if (!sdbg_host) { | |
cbf67842 | 2647 | pr_err("%s: Host info NULL\n", __func__); |
1da177e4 LT |
2648 | return NULL; |
2649 | } | |
2650 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { | |
2651 | if ((devip->used) && (devip->channel == sdev->channel) && | |
2652 | (devip->target == sdev->id) && | |
2653 | (devip->lun == sdev->lun)) | |
2654 | return devip; | |
2655 | else { | |
2656 | if ((!devip->used) && (!open_devip)) | |
2657 | open_devip = devip; | |
2658 | } | |
2659 | } | |
5cb2fc06 FT |
2660 | if (!open_devip) { /* try and make a new one */ |
2661 | open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); | |
2662 | if (!open_devip) { | |
1da177e4 | 2663 | printk(KERN_ERR "%s: out of memory at line %d\n", |
cadbd4a5 | 2664 | __func__, __LINE__); |
1da177e4 LT |
2665 | return NULL; |
2666 | } | |
1da177e4 | 2667 | } |
a75869d1 FT |
2668 | |
2669 | open_devip->channel = sdev->channel; | |
2670 | open_devip->target = sdev->id; | |
2671 | open_devip->lun = sdev->lun; | |
2672 | open_devip->sdbg_host = sdbg_host; | |
cbf67842 DG |
2673 | atomic_set(&open_devip->num_in_q, 0); |
2674 | set_bit(SDEBUG_UA_POR, open_devip->uas_bm); | |
a75869d1 | 2675 | open_devip->used = 1; |
a75869d1 FT |
2676 | if (sdev->lun == SAM2_WLUN_REPORT_LUNS) |
2677 | open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; | |
2678 | ||
2679 | return open_devip; | |
1da177e4 LT |
2680 | } |
2681 | ||
8dea0d02 | 2682 | static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
1da177e4 | 2683 | { |
8dea0d02 | 2684 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
9cb78c16 | 2685 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %llu>\n", |
8dea0d02 | 2686 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
75ad23bc | 2687 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); |
8dea0d02 FT |
2688 | return 0; |
2689 | } | |
1da177e4 | 2690 | |
8dea0d02 FT |
2691 | static int scsi_debug_slave_configure(struct scsi_device *sdp) |
2692 | { | |
2693 | struct sdebug_dev_info *devip; | |
a34c4e98 | 2694 | |
8dea0d02 | 2695 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
9cb78c16 | 2696 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %llu>\n", |
8dea0d02 FT |
2697 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
2698 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) | |
2699 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; | |
2700 | devip = devInfoReg(sdp); | |
2701 | if (NULL == devip) | |
2702 | return 1; /* no resources, will be marked offline */ | |
2703 | sdp->hostdata = devip; | |
cbf67842 | 2704 | sdp->tagged_supported = 1; |
8dea0d02 | 2705 | if (sdp->host->cmd_per_lun) |
cbf67842 DG |
2706 | scsi_adjust_queue_depth(sdp, DEF_TAGGED_QUEUING, |
2707 | DEF_CMD_PER_LUN); | |
6bb5e6e7 | 2708 | blk_queue_max_segment_size(sdp->request_queue, -1U); |
78d4e5a0 DG |
2709 | if (scsi_debug_no_uld) |
2710 | sdp->no_uld_attach = 1; | |
8dea0d02 FT |
2711 | return 0; |
2712 | } | |
2713 | ||
2714 | static void scsi_debug_slave_destroy(struct scsi_device *sdp) | |
2715 | { | |
2716 | struct sdebug_dev_info *devip = | |
2717 | (struct sdebug_dev_info *)sdp->hostdata; | |
a34c4e98 | 2718 | |
1da177e4 | 2719 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
9cb78c16 | 2720 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %llu>\n", |
8dea0d02 FT |
2721 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
2722 | if (devip) { | |
25985edc | 2723 | /* make this slot available for re-use */ |
8dea0d02 FT |
2724 | devip->used = 0; |
2725 | sdp->hostdata = NULL; | |
2726 | } | |
2727 | } | |
2728 | ||
cbf67842 | 2729 | /* Returns 1 if cmnd found (deletes its timer or tasklet), else returns 0 */ |
8dea0d02 FT |
2730 | static int stop_queued_cmnd(struct scsi_cmnd *cmnd) |
2731 | { | |
2732 | unsigned long iflags; | |
cbf67842 | 2733 | int k, qmax, r_qmax; |
8dea0d02 | 2734 | struct sdebug_queued_cmd *sqcp; |
cbf67842 | 2735 | struct sdebug_dev_info *devip; |
8dea0d02 FT |
2736 | |
2737 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
cbf67842 DG |
2738 | qmax = scsi_debug_max_queue; |
2739 | r_qmax = atomic_read(&retired_max_queue); | |
2740 | if (r_qmax > qmax) | |
2741 | qmax = r_qmax; | |
2742 | for (k = 0; k < qmax; ++k) { | |
2743 | if (test_bit(k, queued_in_use_bm)) { | |
2744 | sqcp = &queued_arr[k]; | |
2745 | if (cmnd == sqcp->a_cmnd) { | |
2746 | if (scsi_debug_ndelay > 0) { | |
2747 | if (sqcp->sd_hrtp) | |
2748 | hrtimer_cancel( | |
2749 | &sqcp->sd_hrtp->hrt); | |
2750 | } else if (scsi_debug_delay > 0) { | |
2751 | if (sqcp->cmnd_timerp) | |
2752 | del_timer_sync( | |
2753 | sqcp->cmnd_timerp); | |
2754 | } else if (scsi_debug_delay < 0) { | |
2755 | if (sqcp->tletp) | |
2756 | tasklet_kill(sqcp->tletp); | |
2757 | } | |
2758 | __clear_bit(k, queued_in_use_bm); | |
2759 | devip = (struct sdebug_dev_info *) | |
2760 | cmnd->device->hostdata; | |
2761 | if (devip) | |
2762 | atomic_dec(&devip->num_in_q); | |
2763 | sqcp->a_cmnd = NULL; | |
2764 | break; | |
2765 | } | |
8dea0d02 FT |
2766 | } |
2767 | } | |
2768 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
cbf67842 | 2769 | return (k < qmax) ? 1 : 0; |
8dea0d02 FT |
2770 | } |
2771 | ||
cbf67842 | 2772 | /* Deletes (stops) timers or tasklets of all queued commands */ |
8dea0d02 FT |
2773 | static void stop_all_queued(void) |
2774 | { | |
2775 | unsigned long iflags; | |
2776 | int k; | |
2777 | struct sdebug_queued_cmd *sqcp; | |
cbf67842 | 2778 | struct sdebug_dev_info *devip; |
8dea0d02 FT |
2779 | |
2780 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
cbf67842 DG |
2781 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
2782 | if (test_bit(k, queued_in_use_bm)) { | |
2783 | sqcp = &queued_arr[k]; | |
2784 | if (sqcp->a_cmnd) { | |
2785 | if (scsi_debug_ndelay > 0) { | |
2786 | if (sqcp->sd_hrtp) | |
2787 | hrtimer_cancel( | |
2788 | &sqcp->sd_hrtp->hrt); | |
2789 | } else if (scsi_debug_delay > 0) { | |
2790 | if (sqcp->cmnd_timerp) | |
2791 | del_timer_sync( | |
2792 | sqcp->cmnd_timerp); | |
2793 | } else if (scsi_debug_delay < 0) { | |
2794 | if (sqcp->tletp) | |
2795 | tasklet_kill(sqcp->tletp); | |
2796 | } | |
2797 | __clear_bit(k, queued_in_use_bm); | |
2798 | devip = (struct sdebug_dev_info *) | |
2799 | sqcp->a_cmnd->device->hostdata; | |
2800 | if (devip) | |
2801 | atomic_dec(&devip->num_in_q); | |
2802 | sqcp->a_cmnd = NULL; | |
2803 | } | |
8dea0d02 FT |
2804 | } |
2805 | } | |
2806 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1da177e4 LT |
2807 | } |
2808 | ||
cbf67842 DG |
2809 | /* Free queued command memory on heap */ |
2810 | static void free_all_queued(void) | |
1da177e4 | 2811 | { |
cbf67842 DG |
2812 | unsigned long iflags; |
2813 | int k; | |
2814 | struct sdebug_queued_cmd *sqcp; | |
2815 | ||
2816 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2817 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2818 | sqcp = &queued_arr[k]; | |
2819 | kfree(sqcp->cmnd_timerp); | |
2820 | sqcp->cmnd_timerp = NULL; | |
2821 | kfree(sqcp->tletp); | |
2822 | sqcp->tletp = NULL; | |
2823 | kfree(sqcp->sd_hrtp); | |
2824 | sqcp->sd_hrtp = NULL; | |
2825 | } | |
2826 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1da177e4 LT |
2827 | } |
2828 | ||
cbf67842 | 2829 | static int scsi_debug_abort(struct scsi_cmnd *SCpnt) |
1da177e4 | 2830 | { |
cbf67842 DG |
2831 | ++num_aborts; |
2832 | if (SCpnt) { | |
2833 | if (SCpnt->device && | |
2834 | (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts)) | |
2835 | sdev_printk(KERN_INFO, SCpnt->device, "%s\n", | |
2836 | __func__); | |
2837 | stop_queued_cmnd(SCpnt); | |
2838 | } | |
2839 | return SUCCESS; | |
1da177e4 LT |
2840 | } |
2841 | ||
2842 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) | |
2843 | { | |
2844 | struct sdebug_dev_info * devip; | |
2845 | ||
1da177e4 | 2846 | ++num_dev_resets; |
cbf67842 DG |
2847 | if (SCpnt && SCpnt->device) { |
2848 | struct scsi_device *sdp = SCpnt->device; | |
2849 | ||
2850 | if (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts) | |
2851 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); | |
2852 | devip = devInfoReg(sdp); | |
1da177e4 | 2853 | if (devip) |
cbf67842 DG |
2854 | set_bit(SDEBUG_UA_POR, devip->uas_bm); |
2855 | } | |
2856 | return SUCCESS; | |
2857 | } | |
2858 | ||
2859 | static int scsi_debug_target_reset(struct scsi_cmnd *SCpnt) | |
2860 | { | |
2861 | struct sdebug_host_info *sdbg_host; | |
2862 | struct sdebug_dev_info *devip; | |
2863 | struct scsi_device *sdp; | |
2864 | struct Scsi_Host *hp; | |
2865 | int k = 0; | |
2866 | ||
2867 | ++num_target_resets; | |
2868 | if (!SCpnt) | |
2869 | goto lie; | |
2870 | sdp = SCpnt->device; | |
2871 | if (!sdp) | |
2872 | goto lie; | |
2873 | if (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts) | |
2874 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); | |
2875 | hp = sdp->host; | |
2876 | if (!hp) | |
2877 | goto lie; | |
2878 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); | |
2879 | if (sdbg_host) { | |
2880 | list_for_each_entry(devip, | |
2881 | &sdbg_host->dev_info_list, | |
2882 | dev_list) | |
2883 | if (devip->target == sdp->id) { | |
2884 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
2885 | ++k; | |
2886 | } | |
1da177e4 | 2887 | } |
cbf67842 DG |
2888 | if (SCSI_DEBUG_OPT_RESET_NOISE & scsi_debug_opts) |
2889 | sdev_printk(KERN_INFO, sdp, | |
2890 | "%s: %d device(s) found in target\n", __func__, k); | |
2891 | lie: | |
1da177e4 LT |
2892 | return SUCCESS; |
2893 | } | |
2894 | ||
2895 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) | |
2896 | { | |
2897 | struct sdebug_host_info *sdbg_host; | |
cbf67842 | 2898 | struct sdebug_dev_info *devip; |
1da177e4 LT |
2899 | struct scsi_device * sdp; |
2900 | struct Scsi_Host * hp; | |
cbf67842 | 2901 | int k = 0; |
1da177e4 | 2902 | |
1da177e4 | 2903 | ++num_bus_resets; |
cbf67842 DG |
2904 | if (!(SCpnt && SCpnt->device)) |
2905 | goto lie; | |
2906 | sdp = SCpnt->device; | |
2907 | if (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts) | |
2908 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); | |
2909 | hp = sdp->host; | |
2910 | if (hp) { | |
d1e4c9c5 | 2911 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
1da177e4 | 2912 | if (sdbg_host) { |
cbf67842 | 2913 | list_for_each_entry(devip, |
1da177e4 | 2914 | &sdbg_host->dev_info_list, |
cbf67842 DG |
2915 | dev_list) { |
2916 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
2917 | ++k; | |
2918 | } | |
1da177e4 LT |
2919 | } |
2920 | } | |
cbf67842 DG |
2921 | if (SCSI_DEBUG_OPT_RESET_NOISE & scsi_debug_opts) |
2922 | sdev_printk(KERN_INFO, sdp, | |
2923 | "%s: %d device(s) found in host\n", __func__, k); | |
2924 | lie: | |
1da177e4 LT |
2925 | return SUCCESS; |
2926 | } | |
2927 | ||
2928 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) | |
2929 | { | |
2930 | struct sdebug_host_info * sdbg_host; | |
cbf67842 DG |
2931 | struct sdebug_dev_info *devip; |
2932 | int k = 0; | |
1da177e4 | 2933 | |
1da177e4 | 2934 | ++num_host_resets; |
cbf67842 DG |
2935 | if ((SCpnt->device) && (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts)) |
2936 | sdev_printk(KERN_INFO, SCpnt->device, "%s\n", __func__); | |
1da177e4 LT |
2937 | spin_lock(&sdebug_host_list_lock); |
2938 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
cbf67842 DG |
2939 | list_for_each_entry(devip, &sdbg_host->dev_info_list, |
2940 | dev_list) { | |
2941 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); | |
2942 | ++k; | |
2943 | } | |
1da177e4 LT |
2944 | } |
2945 | spin_unlock(&sdebug_host_list_lock); | |
2946 | stop_all_queued(); | |
cbf67842 DG |
2947 | if (SCSI_DEBUG_OPT_RESET_NOISE & scsi_debug_opts) |
2948 | sdev_printk(KERN_INFO, SCpnt->device, | |
2949 | "%s: %d device(s) found\n", __func__, k); | |
1da177e4 LT |
2950 | return SUCCESS; |
2951 | } | |
2952 | ||
f58b0efb | 2953 | static void __init sdebug_build_parts(unsigned char *ramp, |
5f2578e5 | 2954 | unsigned long store_size) |
1da177e4 LT |
2955 | { |
2956 | struct partition * pp; | |
2957 | int starts[SDEBUG_MAX_PARTS + 2]; | |
2958 | int sectors_per_part, num_sectors, k; | |
2959 | int heads_by_sects, start_sec, end_sec; | |
2960 | ||
2961 | /* assume partition table already zeroed */ | |
f58b0efb | 2962 | if ((scsi_debug_num_parts < 1) || (store_size < 1048576)) |
1da177e4 LT |
2963 | return; |
2964 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { | |
2965 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; | |
cbf67842 DG |
2966 | pr_warn("%s: reducing partitions to %d\n", __func__, |
2967 | SDEBUG_MAX_PARTS); | |
1da177e4 | 2968 | } |
c65b1445 | 2969 | num_sectors = (int)sdebug_store_sectors; |
1da177e4 LT |
2970 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
2971 | / scsi_debug_num_parts; | |
2972 | heads_by_sects = sdebug_heads * sdebug_sectors_per; | |
2973 | starts[0] = sdebug_sectors_per; | |
2974 | for (k = 1; k < scsi_debug_num_parts; ++k) | |
2975 | starts[k] = ((k * sectors_per_part) / heads_by_sects) | |
2976 | * heads_by_sects; | |
2977 | starts[scsi_debug_num_parts] = num_sectors; | |
2978 | starts[scsi_debug_num_parts + 1] = 0; | |
2979 | ||
2980 | ramp[510] = 0x55; /* magic partition markings */ | |
2981 | ramp[511] = 0xAA; | |
2982 | pp = (struct partition *)(ramp + 0x1be); | |
2983 | for (k = 0; starts[k + 1]; ++k, ++pp) { | |
2984 | start_sec = starts[k]; | |
2985 | end_sec = starts[k + 1] - 1; | |
2986 | pp->boot_ind = 0; | |
2987 | ||
2988 | pp->cyl = start_sec / heads_by_sects; | |
2989 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) | |
2990 | / sdebug_sectors_per; | |
2991 | pp->sector = (start_sec % sdebug_sectors_per) + 1; | |
2992 | ||
2993 | pp->end_cyl = end_sec / heads_by_sects; | |
2994 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) | |
2995 | / sdebug_sectors_per; | |
2996 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; | |
2997 | ||
150c3544 AM |
2998 | pp->start_sect = cpu_to_le32(start_sec); |
2999 | pp->nr_sects = cpu_to_le32(end_sec - start_sec + 1); | |
1da177e4 LT |
3000 | pp->sys_ind = 0x83; /* plain Linux partition */ |
3001 | } | |
3002 | } | |
3003 | ||
cbf67842 DG |
3004 | static int |
3005 | schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip, | |
3006 | int scsi_result, int delta_jiff) | |
1da177e4 | 3007 | { |
cbf67842 | 3008 | unsigned long iflags; |
cd62b7da | 3009 | int k, num_in_q, qdepth, inject; |
cbf67842 DG |
3010 | struct sdebug_queued_cmd *sqcp = NULL; |
3011 | struct scsi_device *sdp = cmnd->device; | |
3012 | ||
3013 | if (NULL == cmnd || NULL == devip) { | |
3014 | pr_warn("%s: called with NULL cmnd or devip pointer\n", | |
3015 | __func__); | |
3016 | /* no particularly good error to report back */ | |
3017 | return SCSI_MLQUEUE_HOST_BUSY; | |
3018 | } | |
3019 | if ((scsi_result) && (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
3020 | sdev_printk(KERN_INFO, sdp, "%s: non-zero result=0x%x\n", | |
3021 | __func__, scsi_result); | |
cd62b7da DG |
3022 | if (delta_jiff == 0) |
3023 | goto respond_in_thread; | |
1da177e4 | 3024 | |
cd62b7da | 3025 | /* schedule the response at a later time if resources permit */ |
cbf67842 DG |
3026 | spin_lock_irqsave(&queued_arr_lock, iflags); |
3027 | num_in_q = atomic_read(&devip->num_in_q); | |
3028 | qdepth = cmnd->device->queue_depth; | |
cbf67842 | 3029 | inject = 0; |
cd62b7da DG |
3030 | if ((qdepth > 0) && (num_in_q >= qdepth)) { |
3031 | if (scsi_result) { | |
3032 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3033 | goto respond_in_thread; | |
3034 | } else | |
3035 | scsi_result = device_qfull_result; | |
3036 | } else if ((scsi_debug_every_nth != 0) && | |
3037 | (SCSI_DEBUG_OPT_RARE_TSF & scsi_debug_opts) && | |
3038 | (scsi_result == 0)) { | |
cbf67842 DG |
3039 | if ((num_in_q == (qdepth - 1)) && |
3040 | (atomic_inc_return(&sdebug_a_tsf) >= | |
3041 | abs(scsi_debug_every_nth))) { | |
3042 | atomic_set(&sdebug_a_tsf, 0); | |
3043 | inject = 1; | |
cd62b7da | 3044 | scsi_result = device_qfull_result; |
1da177e4 LT |
3045 | } |
3046 | } | |
1da177e4 | 3047 | |
cd62b7da | 3048 | k = find_first_zero_bit(queued_in_use_bm, scsi_debug_max_queue); |
cbf67842 | 3049 | if (k >= scsi_debug_max_queue) { |
cbf67842 | 3050 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
cd62b7da DG |
3051 | if (scsi_result) |
3052 | goto respond_in_thread; | |
3053 | else if (SCSI_DEBUG_OPT_ALL_TSF & scsi_debug_opts) | |
3054 | scsi_result = device_qfull_result; | |
cbf67842 DG |
3055 | if (SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) |
3056 | sdev_printk(KERN_INFO, sdp, | |
cd62b7da DG |
3057 | "%s: max_queue=%d exceeded, %s\n", |
3058 | __func__, scsi_debug_max_queue, | |
3059 | (scsi_result ? "status: TASK SET FULL" : | |
3060 | "report: host busy")); | |
3061 | if (scsi_result) | |
3062 | goto respond_in_thread; | |
3063 | else | |
cbf67842 DG |
3064 | return SCSI_MLQUEUE_HOST_BUSY; |
3065 | } | |
3066 | __set_bit(k, queued_in_use_bm); | |
3067 | atomic_inc(&devip->num_in_q); | |
3068 | sqcp = &queued_arr[k]; | |
3069 | sqcp->a_cmnd = cmnd; | |
3070 | cmnd->result = scsi_result; | |
3071 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3072 | if (delta_jiff > 0) { | |
3073 | if (NULL == sqcp->cmnd_timerp) { | |
3074 | sqcp->cmnd_timerp = kmalloc(sizeof(struct timer_list), | |
3075 | GFP_ATOMIC); | |
3076 | if (NULL == sqcp->cmnd_timerp) | |
3077 | return SCSI_MLQUEUE_HOST_BUSY; | |
3078 | init_timer(sqcp->cmnd_timerp); | |
1da177e4 | 3079 | } |
cbf67842 DG |
3080 | sqcp->cmnd_timerp->function = sdebug_q_cmd_complete; |
3081 | sqcp->cmnd_timerp->data = k; | |
3082 | sqcp->cmnd_timerp->expires = get_jiffies_64() + delta_jiff; | |
3083 | add_timer(sqcp->cmnd_timerp); | |
3084 | } else if (scsi_debug_ndelay > 0) { | |
3085 | ktime_t kt = ktime_set(0, scsi_debug_ndelay); | |
3086 | struct sdebug_hrtimer *sd_hp = sqcp->sd_hrtp; | |
3087 | ||
3088 | if (NULL == sd_hp) { | |
3089 | sd_hp = kmalloc(sizeof(*sd_hp), GFP_ATOMIC); | |
3090 | if (NULL == sd_hp) | |
3091 | return SCSI_MLQUEUE_HOST_BUSY; | |
3092 | sqcp->sd_hrtp = sd_hp; | |
3093 | hrtimer_init(&sd_hp->hrt, CLOCK_MONOTONIC, | |
3094 | HRTIMER_MODE_REL); | |
3095 | sd_hp->hrt.function = sdebug_q_cmd_hrt_complete; | |
3096 | sd_hp->qa_indx = k; | |
1da177e4 | 3097 | } |
cbf67842 DG |
3098 | hrtimer_start(&sd_hp->hrt, kt, HRTIMER_MODE_REL); |
3099 | } else { /* delay < 0 */ | |
3100 | if (NULL == sqcp->tletp) { | |
3101 | sqcp->tletp = kmalloc(sizeof(*sqcp->tletp), | |
3102 | GFP_ATOMIC); | |
3103 | if (NULL == sqcp->tletp) | |
3104 | return SCSI_MLQUEUE_HOST_BUSY; | |
3105 | tasklet_init(sqcp->tletp, | |
3106 | sdebug_q_cmd_complete, k); | |
3107 | } | |
3108 | if (-1 == delta_jiff) | |
3109 | tasklet_hi_schedule(sqcp->tletp); | |
3110 | else | |
3111 | tasklet_schedule(sqcp->tletp); | |
1da177e4 | 3112 | } |
cd62b7da DG |
3113 | if ((SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) && |
3114 | (scsi_result == device_qfull_result)) | |
cbf67842 DG |
3115 | sdev_printk(KERN_INFO, sdp, |
3116 | "%s: num_in_q=%d +1, %s%s\n", __func__, | |
3117 | num_in_q, (inject ? "<inject> " : ""), | |
3118 | "status: TASK SET FULL"); | |
3119 | return 0; | |
cd62b7da DG |
3120 | |
3121 | respond_in_thread: /* call back to mid-layer using invocation thread */ | |
3122 | cmnd->result = scsi_result; | |
3123 | cmnd->scsi_done(cmnd); | |
3124 | return 0; | |
1da177e4 | 3125 | } |
cbf67842 | 3126 | |
23183910 DG |
3127 | /* Note: The following macros create attribute files in the |
3128 | /sys/module/scsi_debug/parameters directory. Unfortunately this | |
3129 | driver is unaware of a change and cannot trigger auxiliary actions | |
3130 | as it can when the corresponding attribute in the | |
3131 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. | |
3132 | */ | |
c65b1445 | 3133 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
5b94e232 | 3134 | module_param_named(ato, scsi_debug_ato, int, S_IRUGO); |
0759c666 | 3135 | module_param_named(clustering, scsi_debug_clustering, bool, S_IRUGO | S_IWUSR); |
c65b1445 DG |
3136 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); |
3137 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); | |
5b94e232 MP |
3138 | module_param_named(dif, scsi_debug_dif, int, S_IRUGO); |
3139 | module_param_named(dix, scsi_debug_dix, int, S_IRUGO); | |
c65b1445 DG |
3140 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); |
3141 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); | |
23183910 | 3142 | module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); |
68aee7ba | 3143 | module_param_named(guard, scsi_debug_guard, uint, S_IRUGO); |
cbf67842 | 3144 | module_param_named(host_lock, scsi_debug_host_lock, bool, S_IRUGO | S_IWUSR); |
5b94e232 MP |
3145 | module_param_named(lbpu, scsi_debug_lbpu, int, S_IRUGO); |
3146 | module_param_named(lbpws, scsi_debug_lbpws, int, S_IRUGO); | |
3147 | module_param_named(lbpws10, scsi_debug_lbpws10, int, S_IRUGO); | |
be1dd78d | 3148 | module_param_named(lbprz, scsi_debug_lbprz, int, S_IRUGO); |
5b94e232 | 3149 | module_param_named(lowest_aligned, scsi_debug_lowest_aligned, int, S_IRUGO); |
c65b1445 | 3150 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
78d4e5a0 | 3151 | module_param_named(max_queue, scsi_debug_max_queue, int, S_IRUGO | S_IWUSR); |
cbf67842 | 3152 | module_param_named(ndelay, scsi_debug_ndelay, int, S_IRUGO | S_IWUSR); |
c65b1445 | 3153 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); |
78d4e5a0 | 3154 | module_param_named(no_uld, scsi_debug_no_uld, int, S_IRUGO); |
c65b1445 DG |
3155 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); |
3156 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); | |
5b94e232 | 3157 | module_param_named(opt_blks, scsi_debug_opt_blks, int, S_IRUGO); |
c65b1445 | 3158 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); |
5b94e232 | 3159 | module_param_named(physblk_exp, scsi_debug_physblk_exp, int, S_IRUGO); |
c65b1445 | 3160 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); |
d986788b | 3161 | module_param_named(removable, scsi_debug_removable, bool, S_IRUGO | S_IWUSR); |
c65b1445 | 3162 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); |
597136ab | 3163 | module_param_named(sector_size, scsi_debug_sector_size, int, S_IRUGO); |
5b94e232 MP |
3164 | module_param_named(unmap_alignment, scsi_debug_unmap_alignment, int, S_IRUGO); |
3165 | module_param_named(unmap_granularity, scsi_debug_unmap_granularity, int, S_IRUGO); | |
44d92694 MP |
3166 | module_param_named(unmap_max_blocks, scsi_debug_unmap_max_blocks, int, S_IRUGO); |
3167 | module_param_named(unmap_max_desc, scsi_debug_unmap_max_desc, int, S_IRUGO); | |
5b94e232 MP |
3168 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); |
3169 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, | |
3170 | S_IRUGO | S_IWUSR); | |
3171 | module_param_named(write_same_length, scsi_debug_write_same_length, int, | |
3172 | S_IRUGO | S_IWUSR); | |
1da177e4 LT |
3173 | |
3174 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); | |
3175 | MODULE_DESCRIPTION("SCSI debug adapter driver"); | |
3176 | MODULE_LICENSE("GPL"); | |
3177 | MODULE_VERSION(SCSI_DEBUG_VERSION); | |
3178 | ||
3179 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); | |
5b94e232 | 3180 | MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)"); |
0759c666 | 3181 | MODULE_PARM_DESC(clustering, "when set enables larger transfers (def=0)"); |
cbf67842 | 3182 | MODULE_PARM_DESC(delay, "response delay (def=1 jiffy); 0:imm, -1,-2:tiny"); |
c65b1445 | 3183 | MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); |
5b94e232 MP |
3184 | MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); |
3185 | MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); | |
c65b1445 | 3186 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); |
beb87c33 | 3187 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
23183910 | 3188 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
5b94e232 | 3189 | MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)"); |
cbf67842 | 3190 | MODULE_PARM_DESC(host_lock, "use host_lock around all commands (def=0)"); |
5b94e232 MP |
3191 | MODULE_PARM_DESC(lbpu, "enable LBP, support UNMAP command (def=0)"); |
3192 | MODULE_PARM_DESC(lbpws, "enable LBP, support WRITE SAME(16) with UNMAP bit (def=0)"); | |
3193 | MODULE_PARM_DESC(lbpws10, "enable LBP, support WRITE SAME(10) with UNMAP bit (def=0)"); | |
be1dd78d | 3194 | MODULE_PARM_DESC(lbprz, "unmapped blocks return 0 on read (def=1)"); |
5b94e232 | 3195 | MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)"); |
c65b1445 | 3196 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
cbf67842 DG |
3197 | MODULE_PARM_DESC(max_queue, "max number of queued commands (1 to max(def))"); |
3198 | MODULE_PARM_DESC(ndelay, "response delay in nanoseconds (def=0 -> ignore)"); | |
c65b1445 | 3199 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); |
78d4e5a0 | 3200 | MODULE_PARM_DESC(no_uld, "stop ULD (e.g. sd driver) attaching (def=0))"); |
1da177e4 | 3201 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
c65b1445 | 3202 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
5b94e232 | 3203 | MODULE_PARM_DESC(opt_blks, "optimal transfer length in block (def=64)"); |
6f3cbf55 | 3204 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
5b94e232 | 3205 | MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)"); |
1da177e4 | 3206 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
d986788b | 3207 | MODULE_PARM_DESC(removable, "claim to have removable media (def=0)"); |
e46b0344 | 3208 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=6[SPC-4])"); |
ea61fca5 | 3209 | MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)"); |
5b94e232 MP |
3210 | MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)"); |
3211 | MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=1)"); | |
6014759c MP |
3212 | MODULE_PARM_DESC(unmap_max_blocks, "max # of blocks can be unmapped in one cmd (def=0xffffffff)"); |
3213 | MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=256)"); | |
5b94e232 MP |
3214 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); |
3215 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); | |
3216 | MODULE_PARM_DESC(write_same_length, "Maximum blocks per WRITE SAME cmd (def=0xffff)"); | |
1da177e4 LT |
3217 | |
3218 | static char sdebug_info[256]; | |
3219 | ||
3220 | static const char * scsi_debug_info(struct Scsi_Host * shp) | |
3221 | { | |
3222 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " | |
3223 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, | |
3224 | scsi_debug_version_date, scsi_debug_dev_size_mb, | |
3225 | scsi_debug_opts); | |
3226 | return sdebug_info; | |
3227 | } | |
3228 | ||
cbf67842 | 3229 | /* 'echo <val> > /proc/scsi/scsi_debug/<host_id>' writes to opts */ |
c8ed555a | 3230 | static int scsi_debug_write_info(struct Scsi_Host *host, char *buffer, int length) |
1da177e4 | 3231 | { |
c8ed555a AV |
3232 | char arr[16]; |
3233 | int opts; | |
3234 | int minLen = length > 15 ? 15 : length; | |
1da177e4 | 3235 | |
c8ed555a AV |
3236 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
3237 | return -EACCES; | |
3238 | memcpy(arr, buffer, minLen); | |
3239 | arr[minLen] = '\0'; | |
3240 | if (1 != sscanf(arr, "%d", &opts)) | |
3241 | return -EINVAL; | |
3242 | scsi_debug_opts = opts; | |
3243 | if (scsi_debug_every_nth != 0) | |
cbf67842 | 3244 | atomic_set(&sdebug_cmnd_count, 0); |
c8ed555a AV |
3245 | return length; |
3246 | } | |
1da177e4 | 3247 | |
cbf67842 DG |
3248 | /* Output seen with 'cat /proc/scsi/scsi_debug/<host_id>'. It will be the |
3249 | * same for each scsi_debug host (if more than one). Some of the counters | |
3250 | * output are not atomics so might be inaccurate in a busy system. */ | |
c8ed555a AV |
3251 | static int scsi_debug_show_info(struct seq_file *m, struct Scsi_Host *host) |
3252 | { | |
cbf67842 DG |
3253 | int f, l; |
3254 | char b[32]; | |
3255 | ||
3256 | if (scsi_debug_every_nth > 0) | |
3257 | snprintf(b, sizeof(b), " (curr:%d)", | |
3258 | ((SCSI_DEBUG_OPT_RARE_TSF & scsi_debug_opts) ? | |
3259 | atomic_read(&sdebug_a_tsf) : | |
3260 | atomic_read(&sdebug_cmnd_count))); | |
3261 | else | |
3262 | b[0] = '\0'; | |
3263 | ||
3264 | seq_printf(m, "scsi_debug adapter driver, version %s [%s]\n" | |
3265 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " | |
3266 | "every_nth=%d%s\n" | |
3267 | "delay=%d, ndelay=%d, max_luns=%d, q_completions=%d\n" | |
3268 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" | |
3269 | "command aborts=%d; RESETs: device=%d, target=%d, bus=%d, " | |
3270 | "host=%d\ndix_reads=%d dix_writes=%d dif_errors=%d " | |
3271 | "usec_in_jiffy=%lu\n", | |
3272 | SCSI_DEBUG_VERSION, scsi_debug_version_date, | |
3273 | scsi_debug_num_tgts, scsi_debug_dev_size_mb, scsi_debug_opts, | |
3274 | scsi_debug_every_nth, b, scsi_debug_delay, scsi_debug_ndelay, | |
3275 | scsi_debug_max_luns, atomic_read(&sdebug_completions), | |
3276 | scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads, | |
3277 | sdebug_sectors_per, num_aborts, num_dev_resets, | |
3278 | num_target_resets, num_bus_resets, num_host_resets, | |
3279 | dix_reads, dix_writes, dif_errors, TICK_NSEC / 1000); | |
3280 | ||
3281 | f = find_first_bit(queued_in_use_bm, scsi_debug_max_queue); | |
3282 | if (f != scsi_debug_max_queue) { | |
3283 | l = find_last_bit(queued_in_use_bm, scsi_debug_max_queue); | |
3284 | seq_printf(m, " %s BUSY: first,last bits set: %d,%d\n", | |
3285 | "queued_in_use_bm", f, l); | |
3286 | } | |
c8ed555a | 3287 | return 0; |
1da177e4 LT |
3288 | } |
3289 | ||
82069379 | 3290 | static ssize_t delay_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3291 | { |
3292 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); | |
3293 | } | |
cbf67842 | 3294 | /* Returns -EBUSY if delay is being changed and commands are queued */ |
82069379 AM |
3295 | static ssize_t delay_store(struct device_driver *ddp, const char *buf, |
3296 | size_t count) | |
1da177e4 | 3297 | { |
cbf67842 DG |
3298 | int delay, res; |
3299 | ||
3300 | if ((count > 0) && (1 == sscanf(buf, "%d", &delay))) { | |
3301 | res = count; | |
3302 | if (scsi_debug_delay != delay) { | |
3303 | unsigned long iflags; | |
3304 | int k; | |
3305 | ||
3306 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
3307 | k = find_first_bit(queued_in_use_bm, | |
3308 | scsi_debug_max_queue); | |
3309 | if (k != scsi_debug_max_queue) | |
3310 | res = -EBUSY; /* have queued commands */ | |
3311 | else { | |
3312 | scsi_debug_delay = delay; | |
3313 | scsi_debug_ndelay = 0; | |
3314 | } | |
3315 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1da177e4 | 3316 | } |
cbf67842 | 3317 | return res; |
1da177e4 LT |
3318 | } |
3319 | return -EINVAL; | |
3320 | } | |
82069379 | 3321 | static DRIVER_ATTR_RW(delay); |
1da177e4 | 3322 | |
cbf67842 DG |
3323 | static ssize_t ndelay_show(struct device_driver *ddp, char *buf) |
3324 | { | |
3325 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ndelay); | |
3326 | } | |
3327 | /* Returns -EBUSY if ndelay is being changed and commands are queued */ | |
3328 | /* If > 0 and accepted then scsi_debug_delay is set to DELAY_OVERRIDDEN */ | |
3329 | static ssize_t ndelay_store(struct device_driver *ddp, const char *buf, | |
3330 | size_t count) | |
3331 | { | |
3332 | unsigned long iflags; | |
3333 | int ndelay, res, k; | |
3334 | ||
3335 | if ((count > 0) && (1 == sscanf(buf, "%d", &ndelay)) && | |
3336 | (ndelay >= 0) && (ndelay < 1000000000)) { | |
3337 | res = count; | |
3338 | if (scsi_debug_ndelay != ndelay) { | |
3339 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
3340 | k = find_first_bit(queued_in_use_bm, | |
3341 | scsi_debug_max_queue); | |
3342 | if (k != scsi_debug_max_queue) | |
3343 | res = -EBUSY; /* have queued commands */ | |
3344 | else { | |
3345 | scsi_debug_ndelay = ndelay; | |
3346 | scsi_debug_delay = ndelay ? DELAY_OVERRIDDEN | |
3347 | : DEF_DELAY; | |
3348 | } | |
3349 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3350 | } | |
3351 | return res; | |
3352 | } | |
3353 | return -EINVAL; | |
3354 | } | |
3355 | static DRIVER_ATTR_RW(ndelay); | |
3356 | ||
82069379 | 3357 | static ssize_t opts_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3358 | { |
3359 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); | |
3360 | } | |
3361 | ||
82069379 AM |
3362 | static ssize_t opts_store(struct device_driver *ddp, const char *buf, |
3363 | size_t count) | |
1da177e4 LT |
3364 | { |
3365 | int opts; | |
3366 | char work[20]; | |
3367 | ||
3368 | if (1 == sscanf(buf, "%10s", work)) { | |
3369 | if (0 == strnicmp(work,"0x", 2)) { | |
3370 | if (1 == sscanf(&work[2], "%x", &opts)) | |
3371 | goto opts_done; | |
3372 | } else { | |
3373 | if (1 == sscanf(work, "%d", &opts)) | |
3374 | goto opts_done; | |
3375 | } | |
3376 | } | |
3377 | return -EINVAL; | |
3378 | opts_done: | |
3379 | scsi_debug_opts = opts; | |
cbf67842 DG |
3380 | atomic_set(&sdebug_cmnd_count, 0); |
3381 | atomic_set(&sdebug_a_tsf, 0); | |
1da177e4 LT |
3382 | return count; |
3383 | } | |
82069379 | 3384 | static DRIVER_ATTR_RW(opts); |
1da177e4 | 3385 | |
82069379 | 3386 | static ssize_t ptype_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3387 | { |
3388 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); | |
3389 | } | |
82069379 AM |
3390 | static ssize_t ptype_store(struct device_driver *ddp, const char *buf, |
3391 | size_t count) | |
1da177e4 LT |
3392 | { |
3393 | int n; | |
3394 | ||
3395 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3396 | scsi_debug_ptype = n; | |
3397 | return count; | |
3398 | } | |
3399 | return -EINVAL; | |
3400 | } | |
82069379 | 3401 | static DRIVER_ATTR_RW(ptype); |
1da177e4 | 3402 | |
82069379 | 3403 | static ssize_t dsense_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3404 | { |
3405 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); | |
3406 | } | |
82069379 AM |
3407 | static ssize_t dsense_store(struct device_driver *ddp, const char *buf, |
3408 | size_t count) | |
1da177e4 LT |
3409 | { |
3410 | int n; | |
3411 | ||
3412 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3413 | scsi_debug_dsense = n; | |
3414 | return count; | |
3415 | } | |
3416 | return -EINVAL; | |
3417 | } | |
82069379 | 3418 | static DRIVER_ATTR_RW(dsense); |
1da177e4 | 3419 | |
82069379 | 3420 | static ssize_t fake_rw_show(struct device_driver *ddp, char *buf) |
23183910 DG |
3421 | { |
3422 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); | |
3423 | } | |
82069379 AM |
3424 | static ssize_t fake_rw_store(struct device_driver *ddp, const char *buf, |
3425 | size_t count) | |
23183910 DG |
3426 | { |
3427 | int n; | |
3428 | ||
3429 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
cbf67842 DG |
3430 | n = (n > 0); |
3431 | scsi_debug_fake_rw = (scsi_debug_fake_rw > 0); | |
3432 | if (scsi_debug_fake_rw != n) { | |
3433 | if ((0 == n) && (NULL == fake_storep)) { | |
3434 | unsigned long sz = | |
3435 | (unsigned long)scsi_debug_dev_size_mb * | |
3436 | 1048576; | |
3437 | ||
3438 | fake_storep = vmalloc(sz); | |
3439 | if (NULL == fake_storep) { | |
3440 | pr_err("%s: out of memory, 9\n", | |
3441 | __func__); | |
3442 | return -ENOMEM; | |
3443 | } | |
3444 | memset(fake_storep, 0, sz); | |
3445 | } | |
3446 | scsi_debug_fake_rw = n; | |
3447 | } | |
23183910 DG |
3448 | return count; |
3449 | } | |
3450 | return -EINVAL; | |
3451 | } | |
82069379 | 3452 | static DRIVER_ATTR_RW(fake_rw); |
23183910 | 3453 | |
82069379 | 3454 | static ssize_t no_lun_0_show(struct device_driver *ddp, char *buf) |
c65b1445 DG |
3455 | { |
3456 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); | |
3457 | } | |
82069379 AM |
3458 | static ssize_t no_lun_0_store(struct device_driver *ddp, const char *buf, |
3459 | size_t count) | |
c65b1445 DG |
3460 | { |
3461 | int n; | |
3462 | ||
3463 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3464 | scsi_debug_no_lun_0 = n; | |
3465 | return count; | |
3466 | } | |
3467 | return -EINVAL; | |
3468 | } | |
82069379 | 3469 | static DRIVER_ATTR_RW(no_lun_0); |
c65b1445 | 3470 | |
82069379 | 3471 | static ssize_t num_tgts_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3472 | { |
3473 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); | |
3474 | } | |
82069379 AM |
3475 | static ssize_t num_tgts_store(struct device_driver *ddp, const char *buf, |
3476 | size_t count) | |
1da177e4 LT |
3477 | { |
3478 | int n; | |
3479 | ||
3480 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3481 | scsi_debug_num_tgts = n; | |
3482 | sdebug_max_tgts_luns(); | |
3483 | return count; | |
3484 | } | |
3485 | return -EINVAL; | |
3486 | } | |
82069379 | 3487 | static DRIVER_ATTR_RW(num_tgts); |
1da177e4 | 3488 | |
82069379 | 3489 | static ssize_t dev_size_mb_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3490 | { |
3491 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); | |
3492 | } | |
82069379 | 3493 | static DRIVER_ATTR_RO(dev_size_mb); |
1da177e4 | 3494 | |
82069379 | 3495 | static ssize_t num_parts_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3496 | { |
3497 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); | |
3498 | } | |
82069379 | 3499 | static DRIVER_ATTR_RO(num_parts); |
1da177e4 | 3500 | |
82069379 | 3501 | static ssize_t every_nth_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3502 | { |
3503 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); | |
3504 | } | |
82069379 AM |
3505 | static ssize_t every_nth_store(struct device_driver *ddp, const char *buf, |
3506 | size_t count) | |
1da177e4 LT |
3507 | { |
3508 | int nth; | |
3509 | ||
3510 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { | |
3511 | scsi_debug_every_nth = nth; | |
cbf67842 | 3512 | atomic_set(&sdebug_cmnd_count, 0); |
1da177e4 LT |
3513 | return count; |
3514 | } | |
3515 | return -EINVAL; | |
3516 | } | |
82069379 | 3517 | static DRIVER_ATTR_RW(every_nth); |
1da177e4 | 3518 | |
82069379 | 3519 | static ssize_t max_luns_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3520 | { |
3521 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); | |
3522 | } | |
82069379 AM |
3523 | static ssize_t max_luns_store(struct device_driver *ddp, const char *buf, |
3524 | size_t count) | |
1da177e4 LT |
3525 | { |
3526 | int n; | |
3527 | ||
3528 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3529 | scsi_debug_max_luns = n; | |
3530 | sdebug_max_tgts_luns(); | |
3531 | return count; | |
3532 | } | |
3533 | return -EINVAL; | |
3534 | } | |
82069379 | 3535 | static DRIVER_ATTR_RW(max_luns); |
1da177e4 | 3536 | |
82069379 | 3537 | static ssize_t max_queue_show(struct device_driver *ddp, char *buf) |
78d4e5a0 DG |
3538 | { |
3539 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_queue); | |
3540 | } | |
cbf67842 DG |
3541 | /* N.B. max_queue can be changed while there are queued commands. In flight |
3542 | * commands beyond the new max_queue will be completed. */ | |
82069379 AM |
3543 | static ssize_t max_queue_store(struct device_driver *ddp, const char *buf, |
3544 | size_t count) | |
78d4e5a0 | 3545 | { |
cbf67842 DG |
3546 | unsigned long iflags; |
3547 | int n, k; | |
78d4e5a0 DG |
3548 | |
3549 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n > 0) && | |
3550 | (n <= SCSI_DEBUG_CANQUEUE)) { | |
cbf67842 DG |
3551 | spin_lock_irqsave(&queued_arr_lock, iflags); |
3552 | k = find_last_bit(queued_in_use_bm, SCSI_DEBUG_CANQUEUE); | |
78d4e5a0 | 3553 | scsi_debug_max_queue = n; |
cbf67842 DG |
3554 | if (SCSI_DEBUG_CANQUEUE == k) |
3555 | atomic_set(&retired_max_queue, 0); | |
3556 | else if (k >= n) | |
3557 | atomic_set(&retired_max_queue, k + 1); | |
3558 | else | |
3559 | atomic_set(&retired_max_queue, 0); | |
3560 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
78d4e5a0 DG |
3561 | return count; |
3562 | } | |
3563 | return -EINVAL; | |
3564 | } | |
82069379 | 3565 | static DRIVER_ATTR_RW(max_queue); |
78d4e5a0 | 3566 | |
82069379 | 3567 | static ssize_t no_uld_show(struct device_driver *ddp, char *buf) |
78d4e5a0 DG |
3568 | { |
3569 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_uld); | |
3570 | } | |
82069379 | 3571 | static DRIVER_ATTR_RO(no_uld); |
78d4e5a0 | 3572 | |
82069379 | 3573 | static ssize_t scsi_level_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3574 | { |
3575 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); | |
3576 | } | |
82069379 | 3577 | static DRIVER_ATTR_RO(scsi_level); |
1da177e4 | 3578 | |
82069379 | 3579 | static ssize_t virtual_gb_show(struct device_driver *ddp, char *buf) |
c65b1445 DG |
3580 | { |
3581 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); | |
3582 | } | |
82069379 AM |
3583 | static ssize_t virtual_gb_store(struct device_driver *ddp, const char *buf, |
3584 | size_t count) | |
c65b1445 DG |
3585 | { |
3586 | int n; | |
3587 | ||
3588 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3589 | scsi_debug_virtual_gb = n; | |
28898873 FT |
3590 | |
3591 | sdebug_capacity = get_sdebug_capacity(); | |
3592 | ||
c65b1445 DG |
3593 | return count; |
3594 | } | |
3595 | return -EINVAL; | |
3596 | } | |
82069379 | 3597 | static DRIVER_ATTR_RW(virtual_gb); |
c65b1445 | 3598 | |
82069379 | 3599 | static ssize_t add_host_show(struct device_driver *ddp, char *buf) |
1da177e4 LT |
3600 | { |
3601 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); | |
3602 | } | |
3603 | ||
82069379 AM |
3604 | static ssize_t add_host_store(struct device_driver *ddp, const char *buf, |
3605 | size_t count) | |
1da177e4 | 3606 | { |
f3df41cf | 3607 | int delta_hosts; |
1da177e4 | 3608 | |
f3df41cf | 3609 | if (sscanf(buf, "%d", &delta_hosts) != 1) |
1da177e4 | 3610 | return -EINVAL; |
1da177e4 LT |
3611 | if (delta_hosts > 0) { |
3612 | do { | |
3613 | sdebug_add_adapter(); | |
3614 | } while (--delta_hosts); | |
3615 | } else if (delta_hosts < 0) { | |
3616 | do { | |
3617 | sdebug_remove_adapter(); | |
3618 | } while (++delta_hosts); | |
3619 | } | |
3620 | return count; | |
3621 | } | |
82069379 | 3622 | static DRIVER_ATTR_RW(add_host); |
1da177e4 | 3623 | |
82069379 | 3624 | static ssize_t vpd_use_hostno_show(struct device_driver *ddp, char *buf) |
23183910 DG |
3625 | { |
3626 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); | |
3627 | } | |
82069379 AM |
3628 | static ssize_t vpd_use_hostno_store(struct device_driver *ddp, const char *buf, |
3629 | size_t count) | |
23183910 DG |
3630 | { |
3631 | int n; | |
3632 | ||
3633 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3634 | scsi_debug_vpd_use_hostno = n; | |
3635 | return count; | |
3636 | } | |
3637 | return -EINVAL; | |
3638 | } | |
82069379 | 3639 | static DRIVER_ATTR_RW(vpd_use_hostno); |
23183910 | 3640 | |
82069379 | 3641 | static ssize_t sector_size_show(struct device_driver *ddp, char *buf) |
597136ab MP |
3642 | { |
3643 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_sector_size); | |
3644 | } | |
82069379 | 3645 | static DRIVER_ATTR_RO(sector_size); |
597136ab | 3646 | |
82069379 | 3647 | static ssize_t dix_show(struct device_driver *ddp, char *buf) |
c6a44287 MP |
3648 | { |
3649 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dix); | |
3650 | } | |
82069379 | 3651 | static DRIVER_ATTR_RO(dix); |
c6a44287 | 3652 | |
82069379 | 3653 | static ssize_t dif_show(struct device_driver *ddp, char *buf) |
c6a44287 MP |
3654 | { |
3655 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dif); | |
3656 | } | |
82069379 | 3657 | static DRIVER_ATTR_RO(dif); |
c6a44287 | 3658 | |
82069379 | 3659 | static ssize_t guard_show(struct device_driver *ddp, char *buf) |
c6a44287 | 3660 | { |
68aee7ba | 3661 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_guard); |
c6a44287 | 3662 | } |
82069379 | 3663 | static DRIVER_ATTR_RO(guard); |
c6a44287 | 3664 | |
82069379 | 3665 | static ssize_t ato_show(struct device_driver *ddp, char *buf) |
c6a44287 MP |
3666 | { |
3667 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ato); | |
3668 | } | |
82069379 | 3669 | static DRIVER_ATTR_RO(ato); |
c6a44287 | 3670 | |
82069379 | 3671 | static ssize_t map_show(struct device_driver *ddp, char *buf) |
44d92694 MP |
3672 | { |
3673 | ssize_t count; | |
3674 | ||
5b94e232 | 3675 | if (!scsi_debug_lbp()) |
44d92694 MP |
3676 | return scnprintf(buf, PAGE_SIZE, "0-%u\n", |
3677 | sdebug_store_sectors); | |
3678 | ||
3679 | count = bitmap_scnlistprintf(buf, PAGE_SIZE, map_storep, map_size); | |
3680 | ||
3681 | buf[count++] = '\n'; | |
3682 | buf[count++] = 0; | |
3683 | ||
3684 | return count; | |
3685 | } | |
82069379 | 3686 | static DRIVER_ATTR_RO(map); |
44d92694 | 3687 | |
82069379 | 3688 | static ssize_t removable_show(struct device_driver *ddp, char *buf) |
d986788b MP |
3689 | { |
3690 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_removable ? 1 : 0); | |
3691 | } | |
82069379 AM |
3692 | static ssize_t removable_store(struct device_driver *ddp, const char *buf, |
3693 | size_t count) | |
d986788b MP |
3694 | { |
3695 | int n; | |
3696 | ||
3697 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3698 | scsi_debug_removable = (n > 0); | |
3699 | return count; | |
3700 | } | |
3701 | return -EINVAL; | |
3702 | } | |
82069379 | 3703 | static DRIVER_ATTR_RW(removable); |
d986788b | 3704 | |
cbf67842 DG |
3705 | static ssize_t host_lock_show(struct device_driver *ddp, char *buf) |
3706 | { | |
3707 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!scsi_debug_host_lock); | |
3708 | } | |
3709 | /* Returns -EBUSY if host_lock is being changed and commands are queued */ | |
3710 | static ssize_t host_lock_store(struct device_driver *ddp, const char *buf, | |
3711 | size_t count) | |
3712 | { | |
3713 | int n, res; | |
3714 | ||
3715 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
3716 | bool new_host_lock = (n > 0); | |
3717 | ||
3718 | res = count; | |
3719 | if (new_host_lock != scsi_debug_host_lock) { | |
3720 | unsigned long iflags; | |
3721 | int k; | |
3722 | ||
3723 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
3724 | k = find_first_bit(queued_in_use_bm, | |
3725 | scsi_debug_max_queue); | |
3726 | if (k != scsi_debug_max_queue) | |
3727 | res = -EBUSY; /* have queued commands */ | |
3728 | else | |
3729 | scsi_debug_host_lock = new_host_lock; | |
3730 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
3731 | } | |
3732 | return res; | |
3733 | } | |
3734 | return -EINVAL; | |
3735 | } | |
3736 | static DRIVER_ATTR_RW(host_lock); | |
3737 | ||
3738 | ||
82069379 | 3739 | /* Note: The following array creates attribute files in the |
23183910 DG |
3740 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these |
3741 | files (over those found in the /sys/module/scsi_debug/parameters | |
3742 | directory) is that auxiliary actions can be triggered when an attribute | |
3743 | is changed. For example see: sdebug_add_host_store() above. | |
3744 | */ | |
6ecaff7f | 3745 | |
82069379 AM |
3746 | static struct attribute *sdebug_drv_attrs[] = { |
3747 | &driver_attr_delay.attr, | |
3748 | &driver_attr_opts.attr, | |
3749 | &driver_attr_ptype.attr, | |
3750 | &driver_attr_dsense.attr, | |
3751 | &driver_attr_fake_rw.attr, | |
3752 | &driver_attr_no_lun_0.attr, | |
3753 | &driver_attr_num_tgts.attr, | |
3754 | &driver_attr_dev_size_mb.attr, | |
3755 | &driver_attr_num_parts.attr, | |
3756 | &driver_attr_every_nth.attr, | |
3757 | &driver_attr_max_luns.attr, | |
3758 | &driver_attr_max_queue.attr, | |
3759 | &driver_attr_no_uld.attr, | |
3760 | &driver_attr_scsi_level.attr, | |
3761 | &driver_attr_virtual_gb.attr, | |
3762 | &driver_attr_add_host.attr, | |
3763 | &driver_attr_vpd_use_hostno.attr, | |
3764 | &driver_attr_sector_size.attr, | |
3765 | &driver_attr_dix.attr, | |
3766 | &driver_attr_dif.attr, | |
3767 | &driver_attr_guard.attr, | |
3768 | &driver_attr_ato.attr, | |
3769 | &driver_attr_map.attr, | |
3770 | &driver_attr_removable.attr, | |
cbf67842 DG |
3771 | &driver_attr_host_lock.attr, |
3772 | &driver_attr_ndelay.attr, | |
82069379 AM |
3773 | NULL, |
3774 | }; | |
3775 | ATTRIBUTE_GROUPS(sdebug_drv); | |
1da177e4 | 3776 | |
11ddceca | 3777 | static struct device *pseudo_primary; |
8dea0d02 | 3778 | |
1da177e4 LT |
3779 | static int __init scsi_debug_init(void) |
3780 | { | |
5f2578e5 | 3781 | unsigned long sz; |
1da177e4 LT |
3782 | int host_to_add; |
3783 | int k; | |
6ecaff7f | 3784 | int ret; |
1da177e4 | 3785 | |
cbf67842 DG |
3786 | atomic_set(&sdebug_cmnd_count, 0); |
3787 | atomic_set(&sdebug_completions, 0); | |
3788 | atomic_set(&retired_max_queue, 0); | |
3789 | ||
3790 | if (scsi_debug_ndelay >= 1000000000) { | |
3791 | pr_warn("%s: ndelay must be less than 1 second, ignored\n", | |
3792 | __func__); | |
3793 | scsi_debug_ndelay = 0; | |
3794 | } else if (scsi_debug_ndelay > 0) | |
3795 | scsi_debug_delay = DELAY_OVERRIDDEN; | |
3796 | ||
597136ab MP |
3797 | switch (scsi_debug_sector_size) { |
3798 | case 512: | |
3799 | case 1024: | |
3800 | case 2048: | |
3801 | case 4096: | |
3802 | break; | |
3803 | default: | |
cbf67842 | 3804 | pr_err("%s: invalid sector_size %d\n", __func__, |
597136ab MP |
3805 | scsi_debug_sector_size); |
3806 | return -EINVAL; | |
3807 | } | |
3808 | ||
c6a44287 MP |
3809 | switch (scsi_debug_dif) { |
3810 | ||
3811 | case SD_DIF_TYPE0_PROTECTION: | |
3812 | case SD_DIF_TYPE1_PROTECTION: | |
395cef03 | 3813 | case SD_DIF_TYPE2_PROTECTION: |
c6a44287 MP |
3814 | case SD_DIF_TYPE3_PROTECTION: |
3815 | break; | |
3816 | ||
3817 | default: | |
cbf67842 | 3818 | pr_err("%s: dif must be 0, 1, 2 or 3\n", __func__); |
c6a44287 MP |
3819 | return -EINVAL; |
3820 | } | |
3821 | ||
3822 | if (scsi_debug_guard > 1) { | |
cbf67842 | 3823 | pr_err("%s: guard must be 0 or 1\n", __func__); |
c6a44287 MP |
3824 | return -EINVAL; |
3825 | } | |
3826 | ||
3827 | if (scsi_debug_ato > 1) { | |
cbf67842 | 3828 | pr_err("%s: ato must be 0 or 1\n", __func__); |
c6a44287 MP |
3829 | return -EINVAL; |
3830 | } | |
3831 | ||
ea61fca5 | 3832 | if (scsi_debug_physblk_exp > 15) { |
cbf67842 | 3833 | pr_err("%s: invalid physblk_exp %u\n", __func__, |
ea61fca5 MP |
3834 | scsi_debug_physblk_exp); |
3835 | return -EINVAL; | |
3836 | } | |
3837 | ||
3838 | if (scsi_debug_lowest_aligned > 0x3fff) { | |
cbf67842 | 3839 | pr_err("%s: lowest_aligned too big: %u\n", __func__, |
ea61fca5 MP |
3840 | scsi_debug_lowest_aligned); |
3841 | return -EINVAL; | |
3842 | } | |
3843 | ||
1da177e4 LT |
3844 | if (scsi_debug_dev_size_mb < 1) |
3845 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ | |
5f2578e5 | 3846 | sz = (unsigned long)scsi_debug_dev_size_mb * 1048576; |
597136ab | 3847 | sdebug_store_sectors = sz / scsi_debug_sector_size; |
28898873 | 3848 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 LT |
3849 | |
3850 | /* play around with geometry, don't waste too much on track 0 */ | |
3851 | sdebug_heads = 8; | |
3852 | sdebug_sectors_per = 32; | |
3853 | if (scsi_debug_dev_size_mb >= 16) | |
3854 | sdebug_heads = 32; | |
3855 | else if (scsi_debug_dev_size_mb >= 256) | |
3856 | sdebug_heads = 64; | |
3857 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
3858 | (sdebug_sectors_per * sdebug_heads); | |
3859 | if (sdebug_cylinders_per >= 1024) { | |
3860 | /* other LLDs do this; implies >= 1GB ram disk ... */ | |
3861 | sdebug_heads = 255; | |
3862 | sdebug_sectors_per = 63; | |
3863 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
3864 | (sdebug_sectors_per * sdebug_heads); | |
3865 | } | |
3866 | ||
cbf67842 DG |
3867 | if (0 == scsi_debug_fake_rw) { |
3868 | fake_storep = vmalloc(sz); | |
3869 | if (NULL == fake_storep) { | |
3870 | pr_err("%s: out of memory, 1\n", __func__); | |
3871 | return -ENOMEM; | |
3872 | } | |
3873 | memset(fake_storep, 0, sz); | |
3874 | if (scsi_debug_num_parts > 0) | |
3875 | sdebug_build_parts(fake_storep, sz); | |
1da177e4 | 3876 | } |
1da177e4 | 3877 | |
7cb69d03 | 3878 | if (scsi_debug_dix) { |
c6a44287 MP |
3879 | int dif_size; |
3880 | ||
3881 | dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple); | |
3882 | dif_storep = vmalloc(dif_size); | |
3883 | ||
cbf67842 DG |
3884 | pr_err("%s: dif_storep %u bytes @ %p\n", __func__, dif_size, |
3885 | dif_storep); | |
c6a44287 MP |
3886 | |
3887 | if (dif_storep == NULL) { | |
cbf67842 | 3888 | pr_err("%s: out of mem. (DIX)\n", __func__); |
c6a44287 MP |
3889 | ret = -ENOMEM; |
3890 | goto free_vm; | |
3891 | } | |
3892 | ||
3893 | memset(dif_storep, 0xff, dif_size); | |
3894 | } | |
3895 | ||
5b94e232 MP |
3896 | /* Logical Block Provisioning */ |
3897 | if (scsi_debug_lbp()) { | |
6014759c MP |
3898 | scsi_debug_unmap_max_blocks = |
3899 | clamp(scsi_debug_unmap_max_blocks, 0U, 0xffffffffU); | |
3900 | ||
3901 | scsi_debug_unmap_max_desc = | |
3902 | clamp(scsi_debug_unmap_max_desc, 0U, 256U); | |
3903 | ||
3904 | scsi_debug_unmap_granularity = | |
3905 | clamp(scsi_debug_unmap_granularity, 1U, 0xffffffffU); | |
3906 | ||
3907 | if (scsi_debug_unmap_alignment && | |
ac17078a AM |
3908 | scsi_debug_unmap_granularity <= |
3909 | scsi_debug_unmap_alignment) { | |
cbf67842 | 3910 | pr_err("%s: ERR: unmap_granularity <= unmap_alignment\n", |
44d92694 MP |
3911 | __func__); |
3912 | return -EINVAL; | |
3913 | } | |
3914 | ||
b90ebc3d AM |
3915 | map_size = lba_to_map_index(sdebug_store_sectors - 1) + 1; |
3916 | map_storep = vmalloc(BITS_TO_LONGS(map_size) * sizeof(long)); | |
44d92694 | 3917 | |
cbf67842 | 3918 | pr_info("%s: %lu provisioning blocks\n", __func__, map_size); |
44d92694 MP |
3919 | |
3920 | if (map_storep == NULL) { | |
cbf67842 | 3921 | pr_err("%s: out of mem. (MAP)\n", __func__); |
44d92694 MP |
3922 | ret = -ENOMEM; |
3923 | goto free_vm; | |
3924 | } | |
3925 | ||
b90ebc3d | 3926 | bitmap_zero(map_storep, map_size); |
44d92694 MP |
3927 | |
3928 | /* Map first 1KB for partition table */ | |
3929 | if (scsi_debug_num_parts) | |
3930 | map_region(0, 2); | |
3931 | } | |
3932 | ||
9b906779 NB |
3933 | pseudo_primary = root_device_register("pseudo_0"); |
3934 | if (IS_ERR(pseudo_primary)) { | |
cbf67842 | 3935 | pr_warn("%s: root_device_register() error\n", __func__); |
9b906779 | 3936 | ret = PTR_ERR(pseudo_primary); |
6ecaff7f RD |
3937 | goto free_vm; |
3938 | } | |
3939 | ret = bus_register(&pseudo_lld_bus); | |
3940 | if (ret < 0) { | |
cbf67842 | 3941 | pr_warn("%s: bus_register error: %d\n", __func__, ret); |
6ecaff7f RD |
3942 | goto dev_unreg; |
3943 | } | |
3944 | ret = driver_register(&sdebug_driverfs_driver); | |
3945 | if (ret < 0) { | |
cbf67842 | 3946 | pr_warn("%s: driver_register error: %d\n", __func__, ret); |
6ecaff7f RD |
3947 | goto bus_unreg; |
3948 | } | |
1da177e4 | 3949 | |
1da177e4 LT |
3950 | host_to_add = scsi_debug_add_host; |
3951 | scsi_debug_add_host = 0; | |
3952 | ||
3953 | for (k = 0; k < host_to_add; k++) { | |
3954 | if (sdebug_add_adapter()) { | |
cbf67842 DG |
3955 | pr_err("%s: sdebug_add_adapter failed k=%d\n", |
3956 | __func__, k); | |
1da177e4 LT |
3957 | break; |
3958 | } | |
3959 | } | |
3960 | ||
3961 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
cbf67842 DG |
3962 | pr_info("%s: built %d host(s)\n", __func__, |
3963 | scsi_debug_add_host); | |
1da177e4 LT |
3964 | } |
3965 | return 0; | |
6ecaff7f | 3966 | |
6ecaff7f RD |
3967 | bus_unreg: |
3968 | bus_unregister(&pseudo_lld_bus); | |
3969 | dev_unreg: | |
9b906779 | 3970 | root_device_unregister(pseudo_primary); |
6ecaff7f | 3971 | free_vm: |
44d92694 MP |
3972 | if (map_storep) |
3973 | vfree(map_storep); | |
c6a44287 MP |
3974 | if (dif_storep) |
3975 | vfree(dif_storep); | |
6ecaff7f RD |
3976 | vfree(fake_storep); |
3977 | ||
3978 | return ret; | |
1da177e4 LT |
3979 | } |
3980 | ||
3981 | static void __exit scsi_debug_exit(void) | |
3982 | { | |
3983 | int k = scsi_debug_add_host; | |
3984 | ||
3985 | stop_all_queued(); | |
cbf67842 | 3986 | free_all_queued(); |
1da177e4 LT |
3987 | for (; k; k--) |
3988 | sdebug_remove_adapter(); | |
1da177e4 LT |
3989 | driver_unregister(&sdebug_driverfs_driver); |
3990 | bus_unregister(&pseudo_lld_bus); | |
9b906779 | 3991 | root_device_unregister(pseudo_primary); |
1da177e4 | 3992 | |
c6a44287 MP |
3993 | if (dif_storep) |
3994 | vfree(dif_storep); | |
3995 | ||
1da177e4 LT |
3996 | vfree(fake_storep); |
3997 | } | |
3998 | ||
3999 | device_initcall(scsi_debug_init); | |
4000 | module_exit(scsi_debug_exit); | |
4001 | ||
1da177e4 LT |
4002 | static void sdebug_release_adapter(struct device * dev) |
4003 | { | |
4004 | struct sdebug_host_info *sdbg_host; | |
4005 | ||
4006 | sdbg_host = to_sdebug_host(dev); | |
4007 | kfree(sdbg_host); | |
4008 | } | |
4009 | ||
4010 | static int sdebug_add_adapter(void) | |
4011 | { | |
4012 | int k, devs_per_host; | |
4013 | int error = 0; | |
4014 | struct sdebug_host_info *sdbg_host; | |
8b40228f | 4015 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 | 4016 | |
c65b1445 | 4017 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
1da177e4 LT |
4018 | if (NULL == sdbg_host) { |
4019 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
cadbd4a5 | 4020 | __func__, __LINE__); |
1da177e4 LT |
4021 | return -ENOMEM; |
4022 | } | |
4023 | ||
1da177e4 LT |
4024 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
4025 | ||
4026 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; | |
4027 | for (k = 0; k < devs_per_host; k++) { | |
5cb2fc06 FT |
4028 | sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); |
4029 | if (!sdbg_devinfo) { | |
1da177e4 | 4030 | printk(KERN_ERR "%s: out of memory at line %d\n", |
cadbd4a5 | 4031 | __func__, __LINE__); |
1da177e4 LT |
4032 | error = -ENOMEM; |
4033 | goto clean; | |
4034 | } | |
1da177e4 LT |
4035 | } |
4036 | ||
4037 | spin_lock(&sdebug_host_list_lock); | |
4038 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); | |
4039 | spin_unlock(&sdebug_host_list_lock); | |
4040 | ||
4041 | sdbg_host->dev.bus = &pseudo_lld_bus; | |
9b906779 | 4042 | sdbg_host->dev.parent = pseudo_primary; |
1da177e4 | 4043 | sdbg_host->dev.release = &sdebug_release_adapter; |
71610f55 | 4044 | dev_set_name(&sdbg_host->dev, "adapter%d", scsi_debug_add_host); |
1da177e4 LT |
4045 | |
4046 | error = device_register(&sdbg_host->dev); | |
4047 | ||
4048 | if (error) | |
4049 | goto clean; | |
4050 | ||
4051 | ++scsi_debug_add_host; | |
4052 | return error; | |
4053 | ||
4054 | clean: | |
8b40228f FT |
4055 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
4056 | dev_list) { | |
1da177e4 LT |
4057 | list_del(&sdbg_devinfo->dev_list); |
4058 | kfree(sdbg_devinfo); | |
4059 | } | |
4060 | ||
4061 | kfree(sdbg_host); | |
4062 | return error; | |
4063 | } | |
4064 | ||
4065 | static void sdebug_remove_adapter(void) | |
4066 | { | |
4067 | struct sdebug_host_info * sdbg_host = NULL; | |
4068 | ||
4069 | spin_lock(&sdebug_host_list_lock); | |
4070 | if (!list_empty(&sdebug_host_list)) { | |
4071 | sdbg_host = list_entry(sdebug_host_list.prev, | |
4072 | struct sdebug_host_info, host_list); | |
4073 | list_del(&sdbg_host->host_list); | |
4074 | } | |
4075 | spin_unlock(&sdebug_host_list_lock); | |
4076 | ||
4077 | if (!sdbg_host) | |
4078 | return; | |
4079 | ||
4080 | device_unregister(&sdbg_host->dev); | |
4081 | --scsi_debug_add_host; | |
4082 | } | |
4083 | ||
cbf67842 DG |
4084 | static int |
4085 | scsi_debug_queuecommand(struct scsi_cmnd *SCpnt) | |
639db475 | 4086 | { |
01123ef4 | 4087 | unsigned char *cmd = SCpnt->cmnd; |
639db475 FT |
4088 | int len, k; |
4089 | unsigned int num; | |
4090 | unsigned long long lba; | |
395cef03 | 4091 | u32 ei_lba; |
639db475 FT |
4092 | int errsts = 0; |
4093 | int target = SCpnt->device->id; | |
4094 | struct sdebug_dev_info *devip = NULL; | |
4095 | int inj_recovered = 0; | |
4096 | int inj_transport = 0; | |
c6a44287 MP |
4097 | int inj_dif = 0; |
4098 | int inj_dix = 0; | |
b57d7c01 | 4099 | int inj_short = 0; |
639db475 | 4100 | int delay_override = 0; |
44d92694 | 4101 | int unmap = 0; |
639db475 FT |
4102 | |
4103 | scsi_set_resid(SCpnt, 0); | |
cbf67842 | 4104 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && |
01123ef4 | 4105 | !(SCSI_DEBUG_OPT_NO_CDB_NOISE & scsi_debug_opts)) { |
cbf67842 DG |
4106 | char b[120]; |
4107 | int n; | |
4108 | ||
4109 | len = SCpnt->cmd_len; | |
4110 | if (len > 32) | |
4111 | strcpy(b, "too long, over 32 bytes"); | |
4112 | else { | |
4113 | for (k = 0, n = 0; k < len; ++k) | |
4114 | n += scnprintf(b + n, sizeof(b) - n, "%02x ", | |
4115 | (unsigned int)cmd[k]); | |
4116 | } | |
4117 | sdev_printk(KERN_INFO, SCpnt->device, "%s: cmd %s\n", my_name, | |
4118 | b); | |
639db475 FT |
4119 | } |
4120 | ||
4121 | if ((SCpnt->device->lun >= scsi_debug_max_luns) && | |
4122 | (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) | |
cbf67842 | 4123 | return schedule_resp(SCpnt, NULL, DID_NO_CONNECT << 16, 0); |
639db475 FT |
4124 | devip = devInfoReg(SCpnt->device); |
4125 | if (NULL == devip) | |
cbf67842 | 4126 | return schedule_resp(SCpnt, NULL, DID_NO_CONNECT << 16, 0); |
639db475 FT |
4127 | |
4128 | if ((scsi_debug_every_nth != 0) && | |
cbf67842 DG |
4129 | (atomic_inc_return(&sdebug_cmnd_count) >= |
4130 | abs(scsi_debug_every_nth))) { | |
4131 | atomic_set(&sdebug_cmnd_count, 0); | |
639db475 FT |
4132 | if (scsi_debug_every_nth < -1) |
4133 | scsi_debug_every_nth = -1; | |
4134 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) | |
4135 | return 0; /* ignore command causing timeout */ | |
18a4d0a2 MP |
4136 | else if (SCSI_DEBUG_OPT_MAC_TIMEOUT & scsi_debug_opts && |
4137 | scsi_medium_access_command(SCpnt)) | |
4138 | return 0; /* time out reads and writes */ | |
639db475 FT |
4139 | else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) |
4140 | inj_recovered = 1; /* to reads and writes below */ | |
4141 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts) | |
4142 | inj_transport = 1; /* to reads and writes below */ | |
c6a44287 MP |
4143 | else if (SCSI_DEBUG_OPT_DIF_ERR & scsi_debug_opts) |
4144 | inj_dif = 1; /* to reads and writes below */ | |
4145 | else if (SCSI_DEBUG_OPT_DIX_ERR & scsi_debug_opts) | |
4146 | inj_dix = 1; /* to reads and writes below */ | |
b57d7c01 CH |
4147 | else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & scsi_debug_opts) |
4148 | inj_short = 1; | |
639db475 FT |
4149 | } |
4150 | ||
4151 | if (devip->wlun) { | |
4152 | switch (*cmd) { | |
4153 | case INQUIRY: | |
4154 | case REQUEST_SENSE: | |
4155 | case TEST_UNIT_READY: | |
4156 | case REPORT_LUNS: | |
4157 | break; /* only allowable wlun commands */ | |
4158 | default: | |
4159 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
4160 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x " | |
4161 | "not supported for wlun\n", *cmd); | |
cbf67842 | 4162 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, |
639db475 FT |
4163 | INVALID_OPCODE, 0); |
4164 | errsts = check_condition_result; | |
cbf67842 | 4165 | return schedule_resp(SCpnt, devip, errsts, 0); |
639db475 FT |
4166 | } |
4167 | } | |
4168 | ||
4169 | switch (*cmd) { | |
4170 | case INQUIRY: /* mandatory, ignore unit attention */ | |
4171 | delay_override = 1; | |
4172 | errsts = resp_inquiry(SCpnt, target, devip); | |
4173 | break; | |
4174 | case REQUEST_SENSE: /* mandatory, ignore unit attention */ | |
4175 | delay_override = 1; | |
4176 | errsts = resp_requests(SCpnt, devip); | |
4177 | break; | |
4178 | case REZERO_UNIT: /* actually this is REWIND for SSC */ | |
4179 | case START_STOP: | |
4180 | errsts = resp_start_stop(SCpnt, devip); | |
4181 | break; | |
4182 | case ALLOW_MEDIUM_REMOVAL: | |
cbf67842 | 4183 | errsts = check_readiness(SCpnt, UAS_ONLY, devip); |
639db475 FT |
4184 | if (errsts) |
4185 | break; | |
4186 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
4187 | printk(KERN_INFO "scsi_debug: Medium removal %s\n", | |
4188 | cmd[4] ? "inhibited" : "enabled"); | |
4189 | break; | |
4190 | case SEND_DIAGNOSTIC: /* mandatory */ | |
cbf67842 | 4191 | errsts = check_readiness(SCpnt, UAS_ONLY, devip); |
639db475 FT |
4192 | break; |
4193 | case TEST_UNIT_READY: /* mandatory */ | |
cbf67842 DG |
4194 | /* delay_override = 1; */ |
4195 | errsts = check_readiness(SCpnt, UAS_TUR, devip); | |
639db475 FT |
4196 | break; |
4197 | case RESERVE: | |
cbf67842 | 4198 | errsts = check_readiness(SCpnt, UAS_ONLY, devip); |
639db475 FT |
4199 | break; |
4200 | case RESERVE_10: | |
cbf67842 | 4201 | errsts = check_readiness(SCpnt, UAS_ONLY, devip); |
639db475 FT |
4202 | break; |
4203 | case RELEASE: | |
cbf67842 | 4204 | errsts = check_readiness(SCpnt, UAS_ONLY, devip); |
639db475 FT |
4205 | break; |
4206 | case RELEASE_10: | |
cbf67842 | 4207 | errsts = check_readiness(SCpnt, UAS_ONLY, devip); |
639db475 FT |
4208 | break; |
4209 | case READ_CAPACITY: | |
4210 | errsts = resp_readcap(SCpnt, devip); | |
4211 | break; | |
4212 | case SERVICE_ACTION_IN: | |
44d92694 MP |
4213 | if (cmd[1] == SAI_READ_CAPACITY_16) |
4214 | errsts = resp_readcap16(SCpnt, devip); | |
4215 | else if (cmd[1] == SAI_GET_LBA_STATUS) { | |
4216 | ||
5b94e232 | 4217 | if (scsi_debug_lbp() == 0) { |
cbf67842 | 4218 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, |
44d92694 MP |
4219 | INVALID_COMMAND_OPCODE, 0); |
4220 | errsts = check_condition_result; | |
4221 | } else | |
4222 | errsts = resp_get_lba_status(SCpnt, devip); | |
4223 | } else { | |
cbf67842 | 4224 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, |
639db475 FT |
4225 | INVALID_OPCODE, 0); |
4226 | errsts = check_condition_result; | |
639db475 | 4227 | } |
639db475 FT |
4228 | break; |
4229 | case MAINTENANCE_IN: | |
4230 | if (MI_REPORT_TARGET_PGS != cmd[1]) { | |
cbf67842 | 4231 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, |
639db475 FT |
4232 | INVALID_OPCODE, 0); |
4233 | errsts = check_condition_result; | |
4234 | break; | |
4235 | } | |
4236 | errsts = resp_report_tgtpgs(SCpnt, devip); | |
4237 | break; | |
4238 | case READ_16: | |
4239 | case READ_12: | |
4240 | case READ_10: | |
395cef03 MP |
4241 | /* READ{10,12,16} and DIF Type 2 are natural enemies */ |
4242 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
4243 | cmd[1] & 0xe0) { | |
cbf67842 | 4244 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, |
395cef03 MP |
4245 | INVALID_COMMAND_OPCODE, 0); |
4246 | errsts = check_condition_result; | |
4247 | break; | |
4248 | } | |
4249 | ||
4250 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || | |
4251 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && | |
4252 | (cmd[1] & 0xe0) == 0) | |
4253 | printk(KERN_ERR "Unprotected RD/WR to DIF device\n"); | |
4254 | ||
4255 | /* fall through */ | |
639db475 | 4256 | case READ_6: |
395cef03 | 4257 | read: |
cbf67842 | 4258 | errsts = check_readiness(SCpnt, UAS_TUR, devip); |
639db475 FT |
4259 | if (errsts) |
4260 | break; | |
4261 | if (scsi_debug_fake_rw) | |
4262 | break; | |
395cef03 | 4263 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
b57d7c01 CH |
4264 | |
4265 | if (inj_short) | |
4266 | num /= 2; | |
4267 | ||
cbf67842 | 4268 | errsts = resp_read(SCpnt, lba, num, ei_lba); |
639db475 | 4269 | if (inj_recovered && (0 == errsts)) { |
cbf67842 | 4270 | mk_sense_buffer(SCpnt, RECOVERED_ERROR, |
639db475 FT |
4271 | THRESHOLD_EXCEEDED, 0); |
4272 | errsts = check_condition_result; | |
4273 | } else if (inj_transport && (0 == errsts)) { | |
cbf67842 | 4274 | mk_sense_buffer(SCpnt, ABORTED_COMMAND, |
639db475 FT |
4275 | TRANSPORT_PROBLEM, ACK_NAK_TO); |
4276 | errsts = check_condition_result; | |
c6a44287 | 4277 | } else if (inj_dif && (0 == errsts)) { |
cbf67842 DG |
4278 | /* Logical block guard check failed */ |
4279 | mk_sense_buffer(SCpnt, ABORTED_COMMAND, 0x10, 1); | |
c6a44287 MP |
4280 | errsts = illegal_condition_result; |
4281 | } else if (inj_dix && (0 == errsts)) { | |
cbf67842 | 4282 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, 0x10, 1); |
c6a44287 | 4283 | errsts = illegal_condition_result; |
639db475 FT |
4284 | } |
4285 | break; | |
4286 | case REPORT_LUNS: /* mandatory, ignore unit attention */ | |
4287 | delay_override = 1; | |
4288 | errsts = resp_report_luns(SCpnt, devip); | |
4289 | break; | |
4290 | case VERIFY: /* 10 byte SBC-2 command */ | |
cbf67842 | 4291 | errsts = check_readiness(SCpnt, UAS_TUR, devip); |
639db475 FT |
4292 | break; |
4293 | case WRITE_16: | |
4294 | case WRITE_12: | |
4295 | case WRITE_10: | |
395cef03 MP |
4296 | /* WRITE{10,12,16} and DIF Type 2 are natural enemies */ |
4297 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && | |
4298 | cmd[1] & 0xe0) { | |
cbf67842 | 4299 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, |
395cef03 MP |
4300 | INVALID_COMMAND_OPCODE, 0); |
4301 | errsts = check_condition_result; | |
4302 | break; | |
4303 | } | |
4304 | ||
4305 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || | |
4306 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && | |
4307 | (cmd[1] & 0xe0) == 0) | |
4308 | printk(KERN_ERR "Unprotected RD/WR to DIF device\n"); | |
4309 | ||
4310 | /* fall through */ | |
639db475 | 4311 | case WRITE_6: |
395cef03 | 4312 | write: |
cbf67842 | 4313 | errsts = check_readiness(SCpnt, UAS_TUR, devip); |
639db475 FT |
4314 | if (errsts) |
4315 | break; | |
4316 | if (scsi_debug_fake_rw) | |
4317 | break; | |
395cef03 | 4318 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
cbf67842 | 4319 | errsts = resp_write(SCpnt, lba, num, ei_lba); |
639db475 | 4320 | if (inj_recovered && (0 == errsts)) { |
cbf67842 | 4321 | mk_sense_buffer(SCpnt, RECOVERED_ERROR, |
639db475 FT |
4322 | THRESHOLD_EXCEEDED, 0); |
4323 | errsts = check_condition_result; | |
c6a44287 | 4324 | } else if (inj_dif && (0 == errsts)) { |
cbf67842 | 4325 | mk_sense_buffer(SCpnt, ABORTED_COMMAND, 0x10, 1); |
c6a44287 MP |
4326 | errsts = illegal_condition_result; |
4327 | } else if (inj_dix && (0 == errsts)) { | |
cbf67842 | 4328 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, 0x10, 1); |
c6a44287 | 4329 | errsts = illegal_condition_result; |
639db475 FT |
4330 | } |
4331 | break; | |
44d92694 | 4332 | case WRITE_SAME_16: |
5b94e232 | 4333 | case WRITE_SAME: |
6014759c | 4334 | if (cmd[1] & 0x8) { |
5b94e232 MP |
4335 | if ((*cmd == WRITE_SAME_16 && scsi_debug_lbpws == 0) || |
4336 | (*cmd == WRITE_SAME && scsi_debug_lbpws10 == 0)) { | |
cbf67842 | 4337 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, |
6014759c MP |
4338 | INVALID_FIELD_IN_CDB, 0); |
4339 | errsts = check_condition_result; | |
4340 | } else | |
4341 | unmap = 1; | |
4342 | } | |
4343 | if (errsts) | |
4344 | break; | |
cbf67842 | 4345 | errsts = check_readiness(SCpnt, UAS_TUR, devip); |
44d92694 MP |
4346 | if (errsts) |
4347 | break; | |
cbf67842 DG |
4348 | if (scsi_debug_fake_rw) |
4349 | break; | |
44d92694 | 4350 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
cbf67842 | 4351 | errsts = resp_write_same(SCpnt, lba, num, ei_lba, unmap); |
44d92694 MP |
4352 | break; |
4353 | case UNMAP: | |
cbf67842 | 4354 | errsts = check_readiness(SCpnt, UAS_TUR, devip); |
44d92694 MP |
4355 | if (errsts) |
4356 | break; | |
cbf67842 DG |
4357 | if (scsi_debug_fake_rw) |
4358 | break; | |
44d92694 | 4359 | |
5b94e232 | 4360 | if (scsi_debug_unmap_max_desc == 0 || scsi_debug_lbpu == 0) { |
cbf67842 | 4361 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, |
44d92694 MP |
4362 | INVALID_COMMAND_OPCODE, 0); |
4363 | errsts = check_condition_result; | |
4364 | } else | |
4365 | errsts = resp_unmap(SCpnt, devip); | |
4366 | break; | |
639db475 FT |
4367 | case MODE_SENSE: |
4368 | case MODE_SENSE_10: | |
4369 | errsts = resp_mode_sense(SCpnt, target, devip); | |
4370 | break; | |
4371 | case MODE_SELECT: | |
4372 | errsts = resp_mode_select(SCpnt, 1, devip); | |
4373 | break; | |
4374 | case MODE_SELECT_10: | |
4375 | errsts = resp_mode_select(SCpnt, 0, devip); | |
4376 | break; | |
4377 | case LOG_SENSE: | |
4378 | errsts = resp_log_sense(SCpnt, devip); | |
4379 | break; | |
4380 | case SYNCHRONIZE_CACHE: | |
4381 | delay_override = 1; | |
cbf67842 | 4382 | errsts = check_readiness(SCpnt, UAS_TUR, devip); |
639db475 FT |
4383 | break; |
4384 | case WRITE_BUFFER: | |
cbf67842 | 4385 | errsts = check_readiness(SCpnt, UAS_ONLY, devip); |
639db475 FT |
4386 | break; |
4387 | case XDWRITEREAD_10: | |
4388 | if (!scsi_bidi_cmnd(SCpnt)) { | |
cbf67842 | 4389 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, |
639db475 FT |
4390 | INVALID_FIELD_IN_CDB, 0); |
4391 | errsts = check_condition_result; | |
4392 | break; | |
4393 | } | |
4394 | ||
cbf67842 | 4395 | errsts = check_readiness(SCpnt, UAS_TUR, devip); |
639db475 FT |
4396 | if (errsts) |
4397 | break; | |
4398 | if (scsi_debug_fake_rw) | |
4399 | break; | |
395cef03 | 4400 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
cbf67842 | 4401 | errsts = resp_read(SCpnt, lba, num, ei_lba); |
639db475 FT |
4402 | if (errsts) |
4403 | break; | |
cbf67842 | 4404 | errsts = resp_write(SCpnt, lba, num, ei_lba); |
639db475 FT |
4405 | if (errsts) |
4406 | break; | |
4407 | errsts = resp_xdwriteread(SCpnt, lba, num, devip); | |
4408 | break; | |
395cef03 MP |
4409 | case VARIABLE_LENGTH_CMD: |
4410 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION) { | |
4411 | ||
4412 | if ((cmd[10] & 0xe0) == 0) | |
4413 | printk(KERN_ERR | |
4414 | "Unprotected RD/WR to DIF device\n"); | |
4415 | ||
4416 | if (cmd[9] == READ_32) { | |
4417 | BUG_ON(SCpnt->cmd_len < 32); | |
4418 | goto read; | |
4419 | } | |
4420 | ||
4421 | if (cmd[9] == WRITE_32) { | |
4422 | BUG_ON(SCpnt->cmd_len < 32); | |
4423 | goto write; | |
4424 | } | |
4425 | } | |
4426 | ||
cbf67842 | 4427 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, |
395cef03 MP |
4428 | INVALID_FIELD_IN_CDB, 0); |
4429 | errsts = check_condition_result; | |
4430 | break; | |
cbf67842 DG |
4431 | case 0x85: |
4432 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
4433 | sdev_printk(KERN_INFO, SCpnt->device, | |
4434 | "%s: ATA PASS-THROUGH(16) not supported\n", my_name); | |
4435 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, | |
4436 | INVALID_OPCODE, 0); | |
4437 | errsts = check_condition_result; | |
4438 | break; | |
639db475 FT |
4439 | default: |
4440 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
cbf67842 DG |
4441 | sdev_printk(KERN_INFO, SCpnt->device, |
4442 | "%s: Opcode: 0x%x not supported\n", | |
4443 | my_name, *cmd); | |
4444 | errsts = check_readiness(SCpnt, UAS_ONLY, devip); | |
639db475 FT |
4445 | if (errsts) |
4446 | break; /* Unit attention takes precedence */ | |
cbf67842 | 4447 | mk_sense_buffer(SCpnt, ILLEGAL_REQUEST, INVALID_OPCODE, 0); |
639db475 FT |
4448 | errsts = check_condition_result; |
4449 | break; | |
4450 | } | |
cbf67842 | 4451 | return schedule_resp(SCpnt, devip, errsts, |
639db475 FT |
4452 | (delay_override ? 0 : scsi_debug_delay)); |
4453 | } | |
4454 | ||
cbf67842 DG |
4455 | static int |
4456 | sdebug_queuecommand_lock_or_not(struct Scsi_Host *shost, struct scsi_cmnd *cmd) | |
4457 | { | |
4458 | if (scsi_debug_host_lock) { | |
4459 | unsigned long iflags; | |
4460 | int rc; | |
4461 | ||
4462 | spin_lock_irqsave(shost->host_lock, iflags); | |
4463 | rc = scsi_debug_queuecommand(cmd); | |
4464 | spin_unlock_irqrestore(shost->host_lock, iflags); | |
4465 | return rc; | |
4466 | } else | |
4467 | return scsi_debug_queuecommand(cmd); | |
4468 | } | |
4469 | ||
4470 | static int | |
4471 | sdebug_change_qdepth(struct scsi_device *sdev, int qdepth, int reason) | |
4472 | { | |
4473 | int num_in_q = 0; | |
4474 | int bad = 0; | |
4475 | unsigned long iflags; | |
4476 | struct sdebug_dev_info *devip; | |
4477 | ||
4478 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
4479 | devip = (struct sdebug_dev_info *)sdev->hostdata; | |
4480 | if (NULL == devip) { | |
4481 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
4482 | return -ENODEV; | |
4483 | } | |
4484 | num_in_q = atomic_read(&devip->num_in_q); | |
4485 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
4486 | if (reason == SCSI_QDEPTH_DEFAULT || reason == SCSI_QDEPTH_RAMP_UP) { | |
4487 | if (qdepth < 1) | |
4488 | qdepth = 1; | |
4489 | /* allow to exceed max host queued_arr elements for testing */ | |
4490 | if (qdepth > SCSI_DEBUG_CANQUEUE + 10) | |
4491 | qdepth = SCSI_DEBUG_CANQUEUE + 10; | |
4492 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); | |
4493 | } else if (reason == SCSI_QDEPTH_QFULL) | |
4494 | scsi_track_queue_full(sdev, qdepth); | |
4495 | else | |
4496 | bad = 1; | |
4497 | if (bad) | |
4498 | sdev_printk(KERN_WARNING, sdev, | |
4499 | "%s: unknown reason=0x%x\n", __func__, reason); | |
4500 | if (SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) { | |
4501 | if (SCSI_QDEPTH_QFULL == reason) | |
4502 | sdev_printk(KERN_INFO, sdev, | |
4503 | "%s: -> %d, num_in_q=%d, reason: queue full\n", | |
4504 | __func__, qdepth, num_in_q); | |
4505 | else { | |
4506 | const char *cp; | |
4507 | ||
4508 | switch (reason) { | |
4509 | case SCSI_QDEPTH_DEFAULT: | |
4510 | cp = "default (sysfs ?)"; | |
4511 | break; | |
4512 | case SCSI_QDEPTH_RAMP_UP: | |
4513 | cp = "ramp up"; | |
4514 | break; | |
4515 | default: | |
4516 | cp = "unknown"; | |
4517 | break; | |
4518 | } | |
4519 | sdev_printk(KERN_INFO, sdev, | |
4520 | "%s: qdepth=%d, num_in_q=%d, reason: %s\n", | |
4521 | __func__, qdepth, num_in_q, cp); | |
4522 | } | |
4523 | } | |
4524 | return sdev->queue_depth; | |
4525 | } | |
4526 | ||
4527 | static int | |
4528 | sdebug_change_qtype(struct scsi_device *sdev, int qtype) | |
4529 | { | |
4530 | if (sdev->tagged_supported) { | |
4531 | scsi_set_tag_type(sdev, qtype); | |
4532 | if (qtype) | |
4533 | scsi_activate_tcq(sdev, sdev->queue_depth); | |
4534 | else | |
4535 | scsi_deactivate_tcq(sdev, sdev->queue_depth); | |
4536 | } else | |
4537 | qtype = 0; | |
4538 | if (SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) { | |
4539 | const char *cp; | |
4540 | ||
4541 | switch (qtype) { | |
4542 | case 0: | |
4543 | cp = "untagged"; | |
4544 | break; | |
4545 | case MSG_SIMPLE_TAG: | |
4546 | cp = "simple tags"; | |
4547 | break; | |
4548 | case MSG_ORDERED_TAG: | |
4549 | cp = "ordered tags"; | |
4550 | break; | |
4551 | default: | |
4552 | cp = "unknown"; | |
4553 | break; | |
4554 | } | |
4555 | sdev_printk(KERN_INFO, sdev, "%s: to %s\n", __func__, cp); | |
4556 | } | |
4557 | return qtype; | |
4558 | } | |
f281233d | 4559 | |
9e603ca0 | 4560 | static struct scsi_host_template sdebug_driver_template = { |
c8ed555a AV |
4561 | .show_info = scsi_debug_show_info, |
4562 | .write_info = scsi_debug_write_info, | |
9e603ca0 FT |
4563 | .proc_name = sdebug_proc_name, |
4564 | .name = "SCSI DEBUG", | |
4565 | .info = scsi_debug_info, | |
4566 | .slave_alloc = scsi_debug_slave_alloc, | |
4567 | .slave_configure = scsi_debug_slave_configure, | |
4568 | .slave_destroy = scsi_debug_slave_destroy, | |
4569 | .ioctl = scsi_debug_ioctl, | |
cbf67842 DG |
4570 | .queuecommand = sdebug_queuecommand_lock_or_not, |
4571 | .change_queue_depth = sdebug_change_qdepth, | |
4572 | .change_queue_type = sdebug_change_qtype, | |
9e603ca0 | 4573 | .eh_abort_handler = scsi_debug_abort, |
9e603ca0 | 4574 | .eh_device_reset_handler = scsi_debug_device_reset, |
cbf67842 DG |
4575 | .eh_target_reset_handler = scsi_debug_target_reset, |
4576 | .eh_bus_reset_handler = scsi_debug_bus_reset, | |
9e603ca0 | 4577 | .eh_host_reset_handler = scsi_debug_host_reset, |
9e603ca0 FT |
4578 | .can_queue = SCSI_DEBUG_CANQUEUE, |
4579 | .this_id = 7, | |
6bb5e6e7 | 4580 | .sg_tablesize = SCSI_MAX_SG_CHAIN_SEGMENTS, |
cbf67842 | 4581 | .cmd_per_lun = DEF_CMD_PER_LUN, |
6bb5e6e7 | 4582 | .max_sectors = -1U, |
9e603ca0 FT |
4583 | .use_clustering = DISABLE_CLUSTERING, |
4584 | .module = THIS_MODULE, | |
4585 | }; | |
4586 | ||
1da177e4 LT |
4587 | static int sdebug_driver_probe(struct device * dev) |
4588 | { | |
4589 | int error = 0; | |
4590 | struct sdebug_host_info *sdbg_host; | |
4591 | struct Scsi_Host *hpnt; | |
c6a44287 | 4592 | int host_prot; |
1da177e4 LT |
4593 | |
4594 | sdbg_host = to_sdebug_host(dev); | |
4595 | ||
78d4e5a0 | 4596 | sdebug_driver_template.can_queue = scsi_debug_max_queue; |
0759c666 AM |
4597 | if (scsi_debug_clustering) |
4598 | sdebug_driver_template.use_clustering = ENABLE_CLUSTERING; | |
78d4e5a0 DG |
4599 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); |
4600 | if (NULL == hpnt) { | |
4601 | printk(KERN_ERR "%s: scsi_register failed\n", __func__); | |
4602 | error = -ENODEV; | |
1da177e4 | 4603 | return error; |
78d4e5a0 | 4604 | } |
1da177e4 LT |
4605 | |
4606 | sdbg_host->shost = hpnt; | |
4607 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; | |
4608 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) | |
4609 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
4610 | else | |
4611 | hpnt->max_id = scsi_debug_num_tgts; | |
c65b1445 | 4612 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
1da177e4 | 4613 | |
c6a44287 MP |
4614 | host_prot = 0; |
4615 | ||
4616 | switch (scsi_debug_dif) { | |
4617 | ||
4618 | case SD_DIF_TYPE1_PROTECTION: | |
4619 | host_prot = SHOST_DIF_TYPE1_PROTECTION; | |
4620 | if (scsi_debug_dix) | |
4621 | host_prot |= SHOST_DIX_TYPE1_PROTECTION; | |
4622 | break; | |
4623 | ||
4624 | case SD_DIF_TYPE2_PROTECTION: | |
4625 | host_prot = SHOST_DIF_TYPE2_PROTECTION; | |
4626 | if (scsi_debug_dix) | |
4627 | host_prot |= SHOST_DIX_TYPE2_PROTECTION; | |
4628 | break; | |
4629 | ||
4630 | case SD_DIF_TYPE3_PROTECTION: | |
4631 | host_prot = SHOST_DIF_TYPE3_PROTECTION; | |
4632 | if (scsi_debug_dix) | |
4633 | host_prot |= SHOST_DIX_TYPE3_PROTECTION; | |
4634 | break; | |
4635 | ||
4636 | default: | |
4637 | if (scsi_debug_dix) | |
4638 | host_prot |= SHOST_DIX_TYPE0_PROTECTION; | |
4639 | break; | |
4640 | } | |
4641 | ||
4642 | scsi_host_set_prot(hpnt, host_prot); | |
4643 | ||
4644 | printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n", | |
4645 | (host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", | |
4646 | (host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", | |
4647 | (host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", | |
4648 | (host_prot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", | |
4649 | (host_prot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", | |
4650 | (host_prot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", | |
4651 | (host_prot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); | |
4652 | ||
4653 | if (scsi_debug_guard == 1) | |
4654 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP); | |
4655 | else | |
4656 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC); | |
4657 | ||
1da177e4 LT |
4658 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
4659 | if (error) { | |
cadbd4a5 | 4660 | printk(KERN_ERR "%s: scsi_add_host failed\n", __func__); |
1da177e4 LT |
4661 | error = -ENODEV; |
4662 | scsi_host_put(hpnt); | |
4663 | } else | |
4664 | scsi_scan_host(hpnt); | |
4665 | ||
cbf67842 | 4666 | return error; |
1da177e4 LT |
4667 | } |
4668 | ||
4669 | static int sdebug_driver_remove(struct device * dev) | |
4670 | { | |
1da177e4 | 4671 | struct sdebug_host_info *sdbg_host; |
8b40228f | 4672 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 LT |
4673 | |
4674 | sdbg_host = to_sdebug_host(dev); | |
4675 | ||
4676 | if (!sdbg_host) { | |
4677 | printk(KERN_ERR "%s: Unable to locate host info\n", | |
cadbd4a5 | 4678 | __func__); |
1da177e4 LT |
4679 | return -ENODEV; |
4680 | } | |
4681 | ||
4682 | scsi_remove_host(sdbg_host->shost); | |
4683 | ||
8b40228f FT |
4684 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
4685 | dev_list) { | |
1da177e4 LT |
4686 | list_del(&sdbg_devinfo->dev_list); |
4687 | kfree(sdbg_devinfo); | |
4688 | } | |
4689 | ||
4690 | scsi_host_put(sdbg_host->shost); | |
4691 | return 0; | |
4692 | } | |
4693 | ||
8dea0d02 FT |
4694 | static int pseudo_lld_bus_match(struct device *dev, |
4695 | struct device_driver *dev_driver) | |
1da177e4 | 4696 | { |
8dea0d02 | 4697 | return 1; |
1da177e4 | 4698 | } |
8dea0d02 FT |
4699 | |
4700 | static struct bus_type pseudo_lld_bus = { | |
4701 | .name = "pseudo", | |
4702 | .match = pseudo_lld_bus_match, | |
4703 | .probe = sdebug_driver_probe, | |
4704 | .remove = sdebug_driver_remove, | |
82069379 | 4705 | .drv_groups = sdebug_drv_groups, |
8dea0d02 | 4706 | }; |