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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 | * | |
15 | * For documentation see http://www.torque.net/sg/sdebug26.html | |
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> | |
33 | #include <linux/types.h> | |
34 | #include <linux/string.h> | |
35 | #include <linux/genhd.h> | |
36 | #include <linux/fs.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/proc_fs.h> | |
1da177e4 LT |
39 | #include <linux/vmalloc.h> |
40 | #include <linux/moduleparam.h> | |
852e034d | 41 | #include <linux/scatterlist.h> |
1da177e4 | 42 | #include <linux/blkdev.h> |
9ff26eef FT |
43 | |
44 | #include <scsi/scsi.h> | |
45 | #include <scsi/scsi_cmnd.h> | |
46 | #include <scsi/scsi_device.h> | |
1da177e4 LT |
47 | #include <scsi/scsi_host.h> |
48 | #include <scsi/scsicam.h> | |
a34c4e98 | 49 | #include <scsi/scsi_eh.h> |
1da177e4 LT |
50 | |
51 | #include <linux/stat.h> | |
52 | ||
1da177e4 | 53 | #include "scsi_logging.h" |
1da177e4 | 54 | |
6f3cbf55 DG |
55 | #define SCSI_DEBUG_VERSION "1.81" |
56 | static const char * scsi_debug_version_date = "20070104"; | |
1da177e4 | 57 | |
6f3cbf55 | 58 | /* Additional Sense Code (ASC) */ |
c65b1445 DG |
59 | #define NO_ADDITIONAL_SENSE 0x0 |
60 | #define LOGICAL_UNIT_NOT_READY 0x4 | |
1da177e4 | 61 | #define UNRECOVERED_READ_ERR 0x11 |
c65b1445 | 62 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
1da177e4 LT |
63 | #define INVALID_OPCODE 0x20 |
64 | #define ADDR_OUT_OF_RANGE 0x21 | |
65 | #define INVALID_FIELD_IN_CDB 0x24 | |
c65b1445 | 66 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
1da177e4 LT |
67 | #define POWERON_RESET 0x29 |
68 | #define SAVING_PARAMS_UNSUP 0x39 | |
6f3cbf55 | 69 | #define TRANSPORT_PROBLEM 0x4b |
c65b1445 DG |
70 | #define THRESHOLD_EXCEEDED 0x5d |
71 | #define LOW_POWER_COND_ON 0x5e | |
1da177e4 | 72 | |
6f3cbf55 DG |
73 | /* Additional Sense Code Qualifier (ASCQ) */ |
74 | #define ACK_NAK_TO 0x3 | |
75 | ||
1da177e4 LT |
76 | #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ |
77 | ||
78 | /* Default values for driver parameters */ | |
79 | #define DEF_NUM_HOST 1 | |
80 | #define DEF_NUM_TGTS 1 | |
81 | #define DEF_MAX_LUNS 1 | |
82 | /* With these defaults, this driver will make 1 host with 1 target | |
83 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. | |
84 | */ | |
85 | #define DEF_DELAY 1 | |
86 | #define DEF_DEV_SIZE_MB 8 | |
87 | #define DEF_EVERY_NTH 0 | |
88 | #define DEF_NUM_PARTS 0 | |
89 | #define DEF_OPTS 0 | |
90 | #define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ | |
91 | #define DEF_PTYPE 0 | |
92 | #define DEF_D_SENSE 0 | |
c65b1445 DG |
93 | #define DEF_NO_LUN_0 0 |
94 | #define DEF_VIRTUAL_GB 0 | |
23183910 DG |
95 | #define DEF_FAKE_RW 0 |
96 | #define DEF_VPD_USE_HOSTNO 1 | |
597136ab | 97 | #define DEF_SECTOR_SIZE 512 |
1da177e4 LT |
98 | |
99 | /* bit mask values for scsi_debug_opts */ | |
100 | #define SCSI_DEBUG_OPT_NOISE 1 | |
101 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 | |
102 | #define SCSI_DEBUG_OPT_TIMEOUT 4 | |
103 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 | |
6f3cbf55 | 104 | #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
1da177e4 LT |
105 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
106 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
107 | * - a RECOVERED_ERROR is simulated on successful read and write | |
108 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
109 | * - a TRANSPORT_ERROR is simulated on successful read and write |
110 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
111 | * |
112 | * When "every_nth" < 0 then after "- every_nth" commands: | |
113 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
114 | * - a RECOVERED_ERROR is simulated on successful read and write | |
115 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
116 | * - a TRANSPORT_ERROR is simulated on successful read and write |
117 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
118 | * This will continue until some other action occurs (e.g. the user |
119 | * writing a new value (other than -1 or 1) to every_nth via sysfs). | |
120 | */ | |
121 | ||
122 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this | |
123 | * sector on read commands: */ | |
124 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ | |
125 | ||
126 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) | |
127 | * or "peripheral device" addressing (value 0) */ | |
128 | #define SAM2_LUN_ADDRESS_METHOD 0 | |
c65b1445 | 129 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
1da177e4 LT |
130 | |
131 | static int scsi_debug_add_host = DEF_NUM_HOST; | |
132 | static int scsi_debug_delay = DEF_DELAY; | |
133 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; | |
134 | static int scsi_debug_every_nth = DEF_EVERY_NTH; | |
135 | static int scsi_debug_max_luns = DEF_MAX_LUNS; | |
136 | static int scsi_debug_num_parts = DEF_NUM_PARTS; | |
137 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ | |
138 | static int scsi_debug_opts = DEF_OPTS; | |
139 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; | |
140 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ | |
141 | static int scsi_debug_dsense = DEF_D_SENSE; | |
c65b1445 DG |
142 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
143 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; | |
23183910 DG |
144 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
145 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; | |
597136ab | 146 | static int scsi_debug_sector_size = DEF_SECTOR_SIZE; |
1da177e4 LT |
147 | |
148 | static int scsi_debug_cmnd_count = 0; | |
149 | ||
150 | #define DEV_READONLY(TGT) (0) | |
151 | #define DEV_REMOVEABLE(TGT) (0) | |
152 | ||
c65b1445 | 153 | static unsigned int sdebug_store_sectors; |
1da177e4 LT |
154 | static sector_t sdebug_capacity; /* in sectors */ |
155 | ||
156 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages | |
157 | may still need them */ | |
158 | static int sdebug_heads; /* heads per disk */ | |
159 | static int sdebug_cylinders_per; /* cylinders per surface */ | |
160 | static int sdebug_sectors_per; /* sectors per cylinder */ | |
161 | ||
1da177e4 LT |
162 | #define SDEBUG_MAX_PARTS 4 |
163 | ||
164 | #define SDEBUG_SENSE_LEN 32 | |
165 | ||
9e603ca0 FT |
166 | #define SCSI_DEBUG_CANQUEUE 255 |
167 | #define SCSI_DEBUG_MAX_CMD_LEN 16 | |
168 | ||
1da177e4 LT |
169 | struct sdebug_dev_info { |
170 | struct list_head dev_list; | |
171 | unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ | |
172 | unsigned int channel; | |
173 | unsigned int target; | |
174 | unsigned int lun; | |
175 | struct sdebug_host_info *sdbg_host; | |
c65b1445 | 176 | unsigned int wlun; |
1da177e4 | 177 | char reset; |
c65b1445 | 178 | char stopped; |
1da177e4 LT |
179 | char used; |
180 | }; | |
181 | ||
182 | struct sdebug_host_info { | |
183 | struct list_head host_list; | |
184 | struct Scsi_Host *shost; | |
185 | struct device dev; | |
186 | struct list_head dev_info_list; | |
187 | }; | |
188 | ||
189 | #define to_sdebug_host(d) \ | |
190 | container_of(d, struct sdebug_host_info, dev) | |
191 | ||
192 | static LIST_HEAD(sdebug_host_list); | |
193 | static DEFINE_SPINLOCK(sdebug_host_list_lock); | |
194 | ||
195 | typedef void (* done_funct_t) (struct scsi_cmnd *); | |
196 | ||
197 | struct sdebug_queued_cmd { | |
198 | int in_use; | |
199 | struct timer_list cmnd_timer; | |
200 | done_funct_t done_funct; | |
201 | struct scsi_cmnd * a_cmnd; | |
202 | int scsi_result; | |
203 | }; | |
204 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; | |
205 | ||
1da177e4 LT |
206 | static unsigned char * fake_storep; /* ramdisk storage */ |
207 | ||
208 | static int num_aborts = 0; | |
209 | static int num_dev_resets = 0; | |
210 | static int num_bus_resets = 0; | |
211 | static int num_host_resets = 0; | |
212 | ||
213 | static DEFINE_SPINLOCK(queued_arr_lock); | |
214 | static DEFINE_RWLOCK(atomic_rw); | |
215 | ||
216 | static char sdebug_proc_name[] = "scsi_debug"; | |
217 | ||
1da177e4 LT |
218 | static struct bus_type pseudo_lld_bus; |
219 | ||
220 | static struct device_driver sdebug_driverfs_driver = { | |
221 | .name = sdebug_proc_name, | |
222 | .bus = &pseudo_lld_bus, | |
1da177e4 LT |
223 | }; |
224 | ||
225 | static const int check_condition_result = | |
226 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | |
227 | ||
c65b1445 DG |
228 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
229 | 0, 0, 0x2, 0x4b}; | |
230 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
231 | 0, 0, 0x0, 0x0}; | |
232 | ||
1da177e4 LT |
233 | static int sdebug_add_adapter(void); |
234 | static void sdebug_remove_adapter(void); | |
1da177e4 | 235 | |
8dea0d02 FT |
236 | static void sdebug_max_tgts_luns(void) |
237 | { | |
238 | struct sdebug_host_info *sdbg_host; | |
239 | struct Scsi_Host *hpnt; | |
240 | ||
241 | spin_lock(&sdebug_host_list_lock); | |
242 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
243 | hpnt = sdbg_host->shost; | |
244 | if ((hpnt->this_id >= 0) && | |
245 | (scsi_debug_num_tgts > hpnt->this_id)) | |
246 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
247 | else | |
248 | hpnt->max_id = scsi_debug_num_tgts; | |
249 | /* scsi_debug_max_luns; */ | |
250 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; | |
251 | } | |
252 | spin_unlock(&sdebug_host_list_lock); | |
253 | } | |
254 | ||
255 | static void mk_sense_buffer(struct sdebug_dev_info *devip, int key, | |
256 | int asc, int asq) | |
257 | { | |
258 | unsigned char *sbuff; | |
259 | ||
260 | sbuff = devip->sense_buff; | |
261 | memset(sbuff, 0, SDEBUG_SENSE_LEN); | |
262 | ||
263 | scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); | |
264 | ||
265 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
266 | printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " | |
267 | "[0x%x,0x%x,0x%x]\n", key, asc, asq); | |
268 | } | |
1da177e4 | 269 | |
3de9f944 FT |
270 | static void get_data_transfer_info(unsigned char *cmd, |
271 | unsigned long long *lba, unsigned int *num) | |
272 | { | |
3de9f944 FT |
273 | switch (*cmd) { |
274 | case WRITE_16: | |
275 | case READ_16: | |
d5cdc989 FT |
276 | *lba = (u64)cmd[9] | (u64)cmd[8] << 8 | |
277 | (u64)cmd[7] << 16 | (u64)cmd[6] << 24 | | |
278 | (u64)cmd[5] << 32 | (u64)cmd[4] << 40 | | |
279 | (u64)cmd[3] << 48 | (u64)cmd[2] << 56; | |
280 | ||
281 | *num = (u32)cmd[13] | (u32)cmd[12] << 8 | (u32)cmd[11] << 16 | | |
282 | (u32)cmd[10] << 24; | |
3de9f944 FT |
283 | break; |
284 | case WRITE_12: | |
285 | case READ_12: | |
d5cdc989 FT |
286 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
287 | (u32)cmd[2] << 24; | |
288 | ||
289 | *num = (u32)cmd[9] | (u32)cmd[8] << 8 | (u32)cmd[7] << 16 | | |
290 | (u32)cmd[6] << 24; | |
3de9f944 FT |
291 | break; |
292 | case WRITE_10: | |
293 | case READ_10: | |
c639d14e | 294 | case XDWRITEREAD_10: |
d5cdc989 FT |
295 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
296 | (u32)cmd[2] << 24; | |
297 | ||
298 | *num = (u32)cmd[8] | (u32)cmd[7] << 8; | |
3de9f944 FT |
299 | break; |
300 | case WRITE_6: | |
301 | case READ_6: | |
d5cdc989 FT |
302 | *lba = (u32)cmd[3] | (u32)cmd[2] << 8 | |
303 | (u32)(cmd[1] & 0x1f) << 16; | |
3de9f944 FT |
304 | *num = (0 == cmd[4]) ? 256 : cmd[4]; |
305 | break; | |
306 | default: | |
307 | break; | |
308 | } | |
309 | } | |
1da177e4 | 310 | |
1da177e4 LT |
311 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
312 | { | |
313 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
314 | printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); | |
315 | } | |
316 | return -EINVAL; | |
317 | /* return -ENOTTY; // correct return but upsets fdisk */ | |
318 | } | |
319 | ||
c65b1445 DG |
320 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
321 | struct sdebug_dev_info * devip) | |
1da177e4 LT |
322 | { |
323 | if (devip->reset) { | |
324 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
325 | printk(KERN_INFO "scsi_debug: Reporting Unit " | |
326 | "attention: power on reset\n"); | |
327 | devip->reset = 0; | |
328 | mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); | |
329 | return check_condition_result; | |
330 | } | |
c65b1445 DG |
331 | if ((0 == reset_only) && devip->stopped) { |
332 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
333 | printk(KERN_INFO "scsi_debug: Reporting Not " | |
334 | "ready: initializing command required\n"); | |
335 | mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, | |
336 | 0x2); | |
337 | return check_condition_result; | |
338 | } | |
1da177e4 LT |
339 | return 0; |
340 | } | |
341 | ||
342 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ | |
21a61829 | 343 | static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
1da177e4 LT |
344 | int arr_len) |
345 | { | |
21a61829 | 346 | int act_len; |
072d0bb3 | 347 | struct scsi_data_buffer *sdb = scsi_in(scp); |
1da177e4 | 348 | |
072d0bb3 | 349 | if (!sdb->length) |
1da177e4 | 350 | return 0; |
072d0bb3 | 351 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
1da177e4 | 352 | return (DID_ERROR << 16); |
21a61829 FT |
353 | |
354 | act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, | |
355 | arr, arr_len); | |
072d0bb3 FT |
356 | if (sdb->resid) |
357 | sdb->resid -= act_len; | |
c65b1445 | 358 | else |
21a61829 FT |
359 | sdb->resid = scsi_bufflen(scp) - act_len; |
360 | ||
1da177e4 LT |
361 | return 0; |
362 | } | |
363 | ||
364 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ | |
21a61829 FT |
365 | static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
366 | int arr_len) | |
1da177e4 | 367 | { |
21a61829 | 368 | if (!scsi_bufflen(scp)) |
1da177e4 | 369 | return 0; |
072d0bb3 | 370 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
1da177e4 | 371 | return -1; |
21a61829 FT |
372 | |
373 | return scsi_sg_copy_to_buffer(scp, arr, arr_len); | |
1da177e4 LT |
374 | } |
375 | ||
376 | ||
377 | static const char * inq_vendor_id = "Linux "; | |
378 | static const char * inq_product_id = "scsi_debug "; | |
379 | static const char * inq_product_rev = "0004"; | |
380 | ||
5a09e398 HR |
381 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
382 | int target_dev_id, int dev_id_num, | |
383 | const char * dev_id_str, | |
c65b1445 | 384 | int dev_id_str_len) |
1da177e4 | 385 | { |
c65b1445 DG |
386 | int num, port_a; |
387 | char b[32]; | |
1da177e4 | 388 | |
c65b1445 | 389 | port_a = target_dev_id + 1; |
1da177e4 LT |
390 | /* T10 vendor identifier field format (faked) */ |
391 | arr[0] = 0x2; /* ASCII */ | |
392 | arr[1] = 0x1; | |
393 | arr[2] = 0x0; | |
394 | memcpy(&arr[4], inq_vendor_id, 8); | |
395 | memcpy(&arr[12], inq_product_id, 16); | |
396 | memcpy(&arr[28], dev_id_str, dev_id_str_len); | |
397 | num = 8 + 16 + dev_id_str_len; | |
398 | arr[3] = num; | |
399 | num += 4; | |
c65b1445 DG |
400 | if (dev_id_num >= 0) { |
401 | /* NAA-5, Logical unit identifier (binary) */ | |
402 | arr[num++] = 0x1; /* binary (not necessarily sas) */ | |
403 | arr[num++] = 0x3; /* PIV=0, lu, naa */ | |
404 | arr[num++] = 0x0; | |
405 | arr[num++] = 0x8; | |
406 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ | |
407 | arr[num++] = 0x33; | |
408 | arr[num++] = 0x33; | |
409 | arr[num++] = 0x30; | |
410 | arr[num++] = (dev_id_num >> 24); | |
411 | arr[num++] = (dev_id_num >> 16) & 0xff; | |
412 | arr[num++] = (dev_id_num >> 8) & 0xff; | |
413 | arr[num++] = dev_id_num & 0xff; | |
414 | /* Target relative port number */ | |
415 | arr[num++] = 0x61; /* proto=sas, binary */ | |
416 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ | |
417 | arr[num++] = 0x0; /* reserved */ | |
418 | arr[num++] = 0x4; /* length */ | |
419 | arr[num++] = 0x0; /* reserved */ | |
420 | arr[num++] = 0x0; /* reserved */ | |
421 | arr[num++] = 0x0; | |
422 | arr[num++] = 0x1; /* relative port A */ | |
423 | } | |
424 | /* NAA-5, Target port identifier */ | |
425 | arr[num++] = 0x61; /* proto=sas, binary */ | |
426 | arr[num++] = 0x93; /* piv=1, target port, naa */ | |
427 | arr[num++] = 0x0; | |
428 | arr[num++] = 0x8; | |
429 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
430 | arr[num++] = 0x22; | |
431 | arr[num++] = 0x22; | |
432 | arr[num++] = 0x20; | |
433 | arr[num++] = (port_a >> 24); | |
434 | arr[num++] = (port_a >> 16) & 0xff; | |
435 | arr[num++] = (port_a >> 8) & 0xff; | |
436 | arr[num++] = port_a & 0xff; | |
5a09e398 HR |
437 | /* NAA-5, Target port group identifier */ |
438 | arr[num++] = 0x61; /* proto=sas, binary */ | |
439 | arr[num++] = 0x95; /* piv=1, target port group id */ | |
440 | arr[num++] = 0x0; | |
441 | arr[num++] = 0x4; | |
442 | arr[num++] = 0; | |
443 | arr[num++] = 0; | |
444 | arr[num++] = (port_group_id >> 8) & 0xff; | |
445 | arr[num++] = port_group_id & 0xff; | |
c65b1445 DG |
446 | /* NAA-5, Target device identifier */ |
447 | arr[num++] = 0x61; /* proto=sas, binary */ | |
448 | arr[num++] = 0xa3; /* piv=1, target device, naa */ | |
449 | arr[num++] = 0x0; | |
450 | arr[num++] = 0x8; | |
451 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
452 | arr[num++] = 0x22; | |
453 | arr[num++] = 0x22; | |
454 | arr[num++] = 0x20; | |
455 | arr[num++] = (target_dev_id >> 24); | |
456 | arr[num++] = (target_dev_id >> 16) & 0xff; | |
457 | arr[num++] = (target_dev_id >> 8) & 0xff; | |
458 | arr[num++] = target_dev_id & 0xff; | |
459 | /* SCSI name string: Target device identifier */ | |
460 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ | |
461 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ | |
462 | arr[num++] = 0x0; | |
463 | arr[num++] = 24; | |
464 | memcpy(arr + num, "naa.52222220", 12); | |
465 | num += 12; | |
466 | snprintf(b, sizeof(b), "%08X", target_dev_id); | |
467 | memcpy(arr + num, b, 8); | |
468 | num += 8; | |
469 | memset(arr + num, 0, 4); | |
470 | num += 4; | |
471 | return num; | |
472 | } | |
473 | ||
474 | ||
475 | static unsigned char vpd84_data[] = { | |
476 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, | |
477 | 0x22,0x22,0x22,0x0,0xbb,0x1, | |
478 | 0x22,0x22,0x22,0x0,0xbb,0x2, | |
479 | }; | |
480 | ||
481 | static int inquiry_evpd_84(unsigned char * arr) | |
482 | { | |
483 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); | |
484 | return sizeof(vpd84_data); | |
485 | } | |
486 | ||
487 | static int inquiry_evpd_85(unsigned char * arr) | |
488 | { | |
489 | int num = 0; | |
490 | const char * na1 = "https://www.kernel.org/config"; | |
491 | const char * na2 = "http://www.kernel.org/log"; | |
492 | int plen, olen; | |
493 | ||
494 | arr[num++] = 0x1; /* lu, storage config */ | |
495 | arr[num++] = 0x0; /* reserved */ | |
496 | arr[num++] = 0x0; | |
497 | olen = strlen(na1); | |
498 | plen = olen + 1; | |
499 | if (plen % 4) | |
500 | plen = ((plen / 4) + 1) * 4; | |
501 | arr[num++] = plen; /* length, null termianted, padded */ | |
502 | memcpy(arr + num, na1, olen); | |
503 | memset(arr + num + olen, 0, plen - olen); | |
504 | num += plen; | |
505 | ||
506 | arr[num++] = 0x4; /* lu, logging */ | |
507 | arr[num++] = 0x0; /* reserved */ | |
508 | arr[num++] = 0x0; | |
509 | olen = strlen(na2); | |
510 | plen = olen + 1; | |
511 | if (plen % 4) | |
512 | plen = ((plen / 4) + 1) * 4; | |
513 | arr[num++] = plen; /* length, null terminated, padded */ | |
514 | memcpy(arr + num, na2, olen); | |
515 | memset(arr + num + olen, 0, plen - olen); | |
516 | num += plen; | |
517 | ||
518 | return num; | |
519 | } | |
520 | ||
521 | /* SCSI ports VPD page */ | |
522 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) | |
523 | { | |
524 | int num = 0; | |
525 | int port_a, port_b; | |
526 | ||
527 | port_a = target_dev_id + 1; | |
528 | port_b = port_a + 1; | |
529 | arr[num++] = 0x0; /* reserved */ | |
530 | arr[num++] = 0x0; /* reserved */ | |
531 | arr[num++] = 0x0; | |
532 | arr[num++] = 0x1; /* relative port 1 (primary) */ | |
533 | memset(arr + num, 0, 6); | |
534 | num += 6; | |
535 | arr[num++] = 0x0; | |
536 | arr[num++] = 12; /* length tp descriptor */ | |
537 | /* naa-5 target port identifier (A) */ | |
538 | arr[num++] = 0x61; /* proto=sas, binary */ | |
539 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
540 | arr[num++] = 0x0; /* reserved */ | |
541 | arr[num++] = 0x8; /* length */ | |
542 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
543 | arr[num++] = 0x22; | |
544 | arr[num++] = 0x22; | |
545 | arr[num++] = 0x20; | |
546 | arr[num++] = (port_a >> 24); | |
547 | arr[num++] = (port_a >> 16) & 0xff; | |
548 | arr[num++] = (port_a >> 8) & 0xff; | |
549 | arr[num++] = port_a & 0xff; | |
550 | ||
551 | arr[num++] = 0x0; /* reserved */ | |
552 | arr[num++] = 0x0; /* reserved */ | |
553 | arr[num++] = 0x0; | |
554 | arr[num++] = 0x2; /* relative port 2 (secondary) */ | |
555 | memset(arr + num, 0, 6); | |
556 | num += 6; | |
557 | arr[num++] = 0x0; | |
558 | arr[num++] = 12; /* length tp descriptor */ | |
559 | /* naa-5 target port identifier (B) */ | |
560 | arr[num++] = 0x61; /* proto=sas, binary */ | |
561 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
562 | arr[num++] = 0x0; /* reserved */ | |
563 | arr[num++] = 0x8; /* length */ | |
564 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
565 | arr[num++] = 0x22; | |
566 | arr[num++] = 0x22; | |
567 | arr[num++] = 0x20; | |
568 | arr[num++] = (port_b >> 24); | |
569 | arr[num++] = (port_b >> 16) & 0xff; | |
570 | arr[num++] = (port_b >> 8) & 0xff; | |
571 | arr[num++] = port_b & 0xff; | |
572 | ||
573 | return num; | |
574 | } | |
575 | ||
576 | ||
577 | static unsigned char vpd89_data[] = { | |
578 | /* from 4th byte */ 0,0,0,0, | |
579 | 'l','i','n','u','x',' ',' ',' ', | |
580 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', | |
581 | '1','2','3','4', | |
582 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, | |
583 | 0xec,0,0,0, | |
584 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, | |
585 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, | |
586 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, | |
587 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, | |
588 | 0x53,0x41, | |
589 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
590 | 0x20,0x20, | |
591 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
592 | 0x10,0x80, | |
593 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, | |
594 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, | |
595 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, | |
596 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, | |
597 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, | |
598 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, | |
599 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, | |
600 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
601 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
602 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
603 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, | |
604 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, | |
605 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, | |
606 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, | |
607 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
608 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
609 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
610 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
611 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
612 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
613 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
614 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
615 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
616 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
617 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
618 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, | |
619 | }; | |
620 | ||
621 | static int inquiry_evpd_89(unsigned char * arr) | |
622 | { | |
623 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); | |
624 | return sizeof(vpd89_data); | |
625 | } | |
626 | ||
627 | ||
628 | static unsigned char vpdb0_data[] = { | |
629 | /* from 4th byte */ 0,0,0,4, | |
630 | 0,0,0x4,0, | |
631 | 0,0,0,64, | |
632 | }; | |
633 | ||
634 | static int inquiry_evpd_b0(unsigned char * arr) | |
635 | { | |
636 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); | |
637 | if (sdebug_store_sectors > 0x400) { | |
638 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; | |
639 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; | |
640 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; | |
641 | arr[7] = sdebug_store_sectors & 0xff; | |
642 | } | |
643 | return sizeof(vpdb0_data); | |
1da177e4 LT |
644 | } |
645 | ||
646 | ||
647 | #define SDEBUG_LONG_INQ_SZ 96 | |
c65b1445 | 648 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
1da177e4 LT |
649 | |
650 | static int resp_inquiry(struct scsi_cmnd * scp, int target, | |
651 | struct sdebug_dev_info * devip) | |
652 | { | |
653 | unsigned char pq_pdt; | |
5a09e398 | 654 | unsigned char * arr; |
1da177e4 | 655 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
5a09e398 | 656 | int alloc_len, n, ret; |
1da177e4 LT |
657 | |
658 | alloc_len = (cmd[3] << 8) + cmd[4]; | |
6f3cbf55 DG |
659 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
660 | if (! arr) | |
661 | return DID_REQUEUE << 16; | |
c65b1445 DG |
662 | if (devip->wlun) |
663 | pq_pdt = 0x1e; /* present, wlun */ | |
664 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) | |
665 | pq_pdt = 0x7f; /* not present, no device type */ | |
666 | else | |
667 | pq_pdt = (scsi_debug_ptype & 0x1f); | |
1da177e4 LT |
668 | arr[0] = pq_pdt; |
669 | if (0x2 & cmd[1]) { /* CMDDT bit set */ | |
670 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
671 | 0); | |
5a09e398 | 672 | kfree(arr); |
1da177e4 LT |
673 | return check_condition_result; |
674 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ | |
5a09e398 | 675 | int lu_id_num, port_group_id, target_dev_id, len; |
c65b1445 DG |
676 | char lu_id_str[6]; |
677 | int host_no = devip->sdbg_host->shost->host_no; | |
1da177e4 | 678 | |
5a09e398 HR |
679 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
680 | (devip->channel & 0x7f); | |
23183910 DG |
681 | if (0 == scsi_debug_vpd_use_hostno) |
682 | host_no = 0; | |
c65b1445 DG |
683 | lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
684 | (devip->target * 1000) + devip->lun); | |
685 | target_dev_id = ((host_no + 1) * 2000) + | |
686 | (devip->target * 1000) - 3; | |
687 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); | |
1da177e4 | 688 | if (0 == cmd[2]) { /* supported vital product data pages */ |
c65b1445 DG |
689 | arr[1] = cmd[2]; /*sanity */ |
690 | n = 4; | |
691 | arr[n++] = 0x0; /* this page */ | |
692 | arr[n++] = 0x80; /* unit serial number */ | |
693 | arr[n++] = 0x83; /* device identification */ | |
694 | arr[n++] = 0x84; /* software interface ident. */ | |
695 | arr[n++] = 0x85; /* management network addresses */ | |
696 | arr[n++] = 0x86; /* extended inquiry */ | |
697 | arr[n++] = 0x87; /* mode page policy */ | |
698 | arr[n++] = 0x88; /* SCSI ports */ | |
699 | arr[n++] = 0x89; /* ATA information */ | |
700 | arr[n++] = 0xb0; /* Block limits (SBC) */ | |
701 | arr[3] = n - 4; /* number of supported VPD pages */ | |
1da177e4 | 702 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
c65b1445 | 703 | arr[1] = cmd[2]; /*sanity */ |
1da177e4 | 704 | arr[3] = len; |
c65b1445 | 705 | memcpy(&arr[4], lu_id_str, len); |
1da177e4 | 706 | } else if (0x83 == cmd[2]) { /* device identification */ |
c65b1445 | 707 | arr[1] = cmd[2]; /*sanity */ |
5a09e398 HR |
708 | arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
709 | target_dev_id, lu_id_num, | |
710 | lu_id_str, len); | |
c65b1445 DG |
711 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
712 | arr[1] = cmd[2]; /*sanity */ | |
713 | arr[3] = inquiry_evpd_84(&arr[4]); | |
714 | } else if (0x85 == cmd[2]) { /* Management network addresses */ | |
715 | arr[1] = cmd[2]; /*sanity */ | |
716 | arr[3] = inquiry_evpd_85(&arr[4]); | |
717 | } else if (0x86 == cmd[2]) { /* extended inquiry */ | |
718 | arr[1] = cmd[2]; /*sanity */ | |
719 | arr[3] = 0x3c; /* number of following entries */ | |
720 | arr[4] = 0x0; /* no protection stuff */ | |
721 | arr[5] = 0x7; /* head of q, ordered + simple q's */ | |
722 | } else if (0x87 == cmd[2]) { /* mode page policy */ | |
723 | arr[1] = cmd[2]; /*sanity */ | |
724 | arr[3] = 0x8; /* number of following entries */ | |
725 | arr[4] = 0x2; /* disconnect-reconnect mp */ | |
726 | arr[6] = 0x80; /* mlus, shared */ | |
727 | arr[8] = 0x18; /* protocol specific lu */ | |
728 | arr[10] = 0x82; /* mlus, per initiator port */ | |
729 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ | |
730 | arr[1] = cmd[2]; /*sanity */ | |
731 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); | |
732 | } else if (0x89 == cmd[2]) { /* ATA information */ | |
733 | arr[1] = cmd[2]; /*sanity */ | |
734 | n = inquiry_evpd_89(&arr[4]); | |
735 | arr[2] = (n >> 8); | |
736 | arr[3] = (n & 0xff); | |
737 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ | |
738 | arr[1] = cmd[2]; /*sanity */ | |
739 | arr[3] = inquiry_evpd_b0(&arr[4]); | |
1da177e4 LT |
740 | } else { |
741 | /* Illegal request, invalid field in cdb */ | |
742 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
743 | INVALID_FIELD_IN_CDB, 0); | |
5a09e398 | 744 | kfree(arr); |
1da177e4 LT |
745 | return check_condition_result; |
746 | } | |
c65b1445 | 747 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
5a09e398 | 748 | ret = fill_from_dev_buffer(scp, arr, |
c65b1445 | 749 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
5a09e398 HR |
750 | kfree(arr); |
751 | return ret; | |
1da177e4 LT |
752 | } |
753 | /* drops through here for a standard inquiry */ | |
754 | arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */ | |
755 | arr[2] = scsi_debug_scsi_level; | |
756 | arr[3] = 2; /* response_data_format==2 */ | |
757 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; | |
5a09e398 HR |
758 | if (0 == scsi_debug_vpd_use_hostno) |
759 | arr[5] = 0x10; /* claim: implicit TGPS */ | |
c65b1445 | 760 | arr[6] = 0x10; /* claim: MultiP */ |
1da177e4 | 761 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
c65b1445 | 762 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
1da177e4 LT |
763 | memcpy(&arr[8], inq_vendor_id, 8); |
764 | memcpy(&arr[16], inq_product_id, 16); | |
765 | memcpy(&arr[32], inq_product_rev, 4); | |
766 | /* version descriptors (2 bytes each) follow */ | |
c65b1445 DG |
767 | arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ |
768 | arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ | |
769 | n = 62; | |
1da177e4 | 770 | if (scsi_debug_ptype == 0) { |
c65b1445 | 771 | arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ |
1da177e4 | 772 | } else if (scsi_debug_ptype == 1) { |
c65b1445 | 773 | arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ |
1da177e4 | 774 | } |
c65b1445 | 775 | arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ |
5a09e398 | 776 | ret = fill_from_dev_buffer(scp, arr, |
1da177e4 | 777 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
5a09e398 HR |
778 | kfree(arr); |
779 | return ret; | |
1da177e4 LT |
780 | } |
781 | ||
782 | static int resp_requests(struct scsi_cmnd * scp, | |
783 | struct sdebug_dev_info * devip) | |
784 | { | |
785 | unsigned char * sbuff; | |
786 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
787 | unsigned char arr[SDEBUG_SENSE_LEN]; | |
c65b1445 | 788 | int want_dsense; |
1da177e4 LT |
789 | int len = 18; |
790 | ||
c65b1445 | 791 | memset(arr, 0, sizeof(arr)); |
1da177e4 | 792 | if (devip->reset == 1) |
c65b1445 DG |
793 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
794 | want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; | |
1da177e4 | 795 | sbuff = devip->sense_buff; |
c65b1445 DG |
796 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
797 | if (want_dsense) { | |
798 | arr[0] = 0x72; | |
799 | arr[1] = 0x0; /* NO_SENSE in sense_key */ | |
800 | arr[2] = THRESHOLD_EXCEEDED; | |
801 | arr[3] = 0xff; /* TEST set and MRIE==6 */ | |
802 | } else { | |
803 | arr[0] = 0x70; | |
804 | arr[2] = 0x0; /* NO_SENSE in sense_key */ | |
805 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
806 | arr[12] = THRESHOLD_EXCEEDED; | |
807 | arr[13] = 0xff; /* TEST set and MRIE==6 */ | |
808 | } | |
c65b1445 | 809 | } else { |
1da177e4 | 810 | memcpy(arr, sbuff, SDEBUG_SENSE_LEN); |
c65b1445 DG |
811 | if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
812 | /* DESC bit set and sense_buff in fixed format */ | |
813 | memset(arr, 0, sizeof(arr)); | |
814 | arr[0] = 0x72; | |
815 | arr[1] = sbuff[2]; /* sense key */ | |
816 | arr[2] = sbuff[12]; /* asc */ | |
817 | arr[3] = sbuff[13]; /* ascq */ | |
818 | len = 8; | |
819 | } | |
820 | } | |
821 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); | |
1da177e4 LT |
822 | return fill_from_dev_buffer(scp, arr, len); |
823 | } | |
824 | ||
c65b1445 DG |
825 | static int resp_start_stop(struct scsi_cmnd * scp, |
826 | struct sdebug_dev_info * devip) | |
827 | { | |
828 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
829 | int power_cond, errsts, start; | |
830 | ||
831 | if ((errsts = check_readiness(scp, 1, devip))) | |
832 | return errsts; | |
833 | power_cond = (cmd[4] & 0xf0) >> 4; | |
834 | if (power_cond) { | |
835 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
836 | 0); | |
837 | return check_condition_result; | |
838 | } | |
839 | start = cmd[4] & 1; | |
840 | if (start == devip->stopped) | |
841 | devip->stopped = !start; | |
842 | return 0; | |
843 | } | |
844 | ||
28898873 FT |
845 | static sector_t get_sdebug_capacity(void) |
846 | { | |
847 | if (scsi_debug_virtual_gb > 0) | |
848 | return 2048 * 1024 * scsi_debug_virtual_gb; | |
849 | else | |
850 | return sdebug_store_sectors; | |
851 | } | |
852 | ||
1da177e4 LT |
853 | #define SDEBUG_READCAP_ARR_SZ 8 |
854 | static int resp_readcap(struct scsi_cmnd * scp, | |
855 | struct sdebug_dev_info * devip) | |
856 | { | |
857 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; | |
c65b1445 | 858 | unsigned int capac; |
1da177e4 LT |
859 | int errsts; |
860 | ||
c65b1445 | 861 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 | 862 | return errsts; |
c65b1445 | 863 | /* following just in case virtual_gb changed */ |
28898873 | 864 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 | 865 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
c65b1445 DG |
866 | if (sdebug_capacity < 0xffffffff) { |
867 | capac = (unsigned int)sdebug_capacity - 1; | |
868 | arr[0] = (capac >> 24); | |
869 | arr[1] = (capac >> 16) & 0xff; | |
870 | arr[2] = (capac >> 8) & 0xff; | |
871 | arr[3] = capac & 0xff; | |
872 | } else { | |
873 | arr[0] = 0xff; | |
874 | arr[1] = 0xff; | |
875 | arr[2] = 0xff; | |
876 | arr[3] = 0xff; | |
877 | } | |
597136ab MP |
878 | arr[6] = (scsi_debug_sector_size >> 8) & 0xff; |
879 | arr[7] = scsi_debug_sector_size & 0xff; | |
1da177e4 LT |
880 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
881 | } | |
882 | ||
c65b1445 DG |
883 | #define SDEBUG_READCAP16_ARR_SZ 32 |
884 | static int resp_readcap16(struct scsi_cmnd * scp, | |
885 | struct sdebug_dev_info * devip) | |
886 | { | |
887 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
888 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; | |
889 | unsigned long long capac; | |
890 | int errsts, k, alloc_len; | |
891 | ||
892 | if ((errsts = check_readiness(scp, 1, devip))) | |
893 | return errsts; | |
894 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) | |
895 | + cmd[13]); | |
896 | /* following just in case virtual_gb changed */ | |
28898873 | 897 | sdebug_capacity = get_sdebug_capacity(); |
c65b1445 DG |
898 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
899 | capac = sdebug_capacity - 1; | |
900 | for (k = 0; k < 8; ++k, capac >>= 8) | |
901 | arr[7 - k] = capac & 0xff; | |
597136ab MP |
902 | arr[8] = (scsi_debug_sector_size >> 24) & 0xff; |
903 | arr[9] = (scsi_debug_sector_size >> 16) & 0xff; | |
904 | arr[10] = (scsi_debug_sector_size >> 8) & 0xff; | |
905 | arr[11] = scsi_debug_sector_size & 0xff; | |
c65b1445 DG |
906 | return fill_from_dev_buffer(scp, arr, |
907 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); | |
908 | } | |
909 | ||
5a09e398 HR |
910 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
911 | ||
912 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, | |
913 | struct sdebug_dev_info * devip) | |
914 | { | |
915 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
916 | unsigned char * arr; | |
917 | int host_no = devip->sdbg_host->shost->host_no; | |
918 | int n, ret, alen, rlen; | |
919 | int port_group_a, port_group_b, port_a, port_b; | |
920 | ||
921 | alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) | |
922 | + cmd[9]); | |
923 | ||
6f3cbf55 DG |
924 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
925 | if (! arr) | |
926 | return DID_REQUEUE << 16; | |
5a09e398 HR |
927 | /* |
928 | * EVPD page 0x88 states we have two ports, one | |
929 | * real and a fake port with no device connected. | |
930 | * So we create two port groups with one port each | |
931 | * and set the group with port B to unavailable. | |
932 | */ | |
933 | port_a = 0x1; /* relative port A */ | |
934 | port_b = 0x2; /* relative port B */ | |
935 | port_group_a = (((host_no + 1) & 0x7f) << 8) + | |
936 | (devip->channel & 0x7f); | |
937 | port_group_b = (((host_no + 1) & 0x7f) << 8) + | |
938 | (devip->channel & 0x7f) + 0x80; | |
939 | ||
940 | /* | |
941 | * The asymmetric access state is cycled according to the host_id. | |
942 | */ | |
943 | n = 4; | |
944 | if (0 == scsi_debug_vpd_use_hostno) { | |
945 | arr[n++] = host_no % 3; /* Asymm access state */ | |
946 | arr[n++] = 0x0F; /* claim: all states are supported */ | |
947 | } else { | |
948 | arr[n++] = 0x0; /* Active/Optimized path */ | |
949 | arr[n++] = 0x01; /* claim: only support active/optimized paths */ | |
950 | } | |
951 | arr[n++] = (port_group_a >> 8) & 0xff; | |
952 | arr[n++] = port_group_a & 0xff; | |
953 | arr[n++] = 0; /* Reserved */ | |
954 | arr[n++] = 0; /* Status code */ | |
955 | arr[n++] = 0; /* Vendor unique */ | |
956 | arr[n++] = 0x1; /* One port per group */ | |
957 | arr[n++] = 0; /* Reserved */ | |
958 | arr[n++] = 0; /* Reserved */ | |
959 | arr[n++] = (port_a >> 8) & 0xff; | |
960 | arr[n++] = port_a & 0xff; | |
961 | arr[n++] = 3; /* Port unavailable */ | |
962 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ | |
963 | arr[n++] = (port_group_b >> 8) & 0xff; | |
964 | arr[n++] = port_group_b & 0xff; | |
965 | arr[n++] = 0; /* Reserved */ | |
966 | arr[n++] = 0; /* Status code */ | |
967 | arr[n++] = 0; /* Vendor unique */ | |
968 | arr[n++] = 0x1; /* One port per group */ | |
969 | arr[n++] = 0; /* Reserved */ | |
970 | arr[n++] = 0; /* Reserved */ | |
971 | arr[n++] = (port_b >> 8) & 0xff; | |
972 | arr[n++] = port_b & 0xff; | |
973 | ||
974 | rlen = n - 4; | |
975 | arr[0] = (rlen >> 24) & 0xff; | |
976 | arr[1] = (rlen >> 16) & 0xff; | |
977 | arr[2] = (rlen >> 8) & 0xff; | |
978 | arr[3] = rlen & 0xff; | |
979 | ||
980 | /* | |
981 | * Return the smallest value of either | |
982 | * - The allocated length | |
983 | * - The constructed command length | |
984 | * - The maximum array size | |
985 | */ | |
986 | rlen = min(alen,n); | |
987 | ret = fill_from_dev_buffer(scp, arr, | |
988 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); | |
989 | kfree(arr); | |
990 | return ret; | |
991 | } | |
992 | ||
1da177e4 LT |
993 | /* <<Following mode page info copied from ST318451LW>> */ |
994 | ||
995 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) | |
996 | { /* Read-Write Error Recovery page for mode_sense */ | |
997 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, | |
998 | 5, 0, 0xff, 0xff}; | |
999 | ||
1000 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); | |
1001 | if (1 == pcontrol) | |
1002 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); | |
1003 | return sizeof(err_recov_pg); | |
1004 | } | |
1005 | ||
1006 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) | |
1007 | { /* Disconnect-Reconnect page for mode_sense */ | |
1008 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, | |
1009 | 0, 0, 0, 0, 0, 0, 0, 0}; | |
1010 | ||
1011 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); | |
1012 | if (1 == pcontrol) | |
1013 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); | |
1014 | return sizeof(disconnect_pg); | |
1015 | } | |
1016 | ||
1017 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) | |
1018 | { /* Format device page for mode_sense */ | |
597136ab MP |
1019 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
1020 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1021 | 0, 0, 0, 0, 0x40, 0, 0, 0}; | |
1022 | ||
1023 | memcpy(p, format_pg, sizeof(format_pg)); | |
1024 | p[10] = (sdebug_sectors_per >> 8) & 0xff; | |
1025 | p[11] = sdebug_sectors_per & 0xff; | |
1026 | p[12] = (scsi_debug_sector_size >> 8) & 0xff; | |
1027 | p[13] = scsi_debug_sector_size & 0xff; | |
1028 | if (DEV_REMOVEABLE(target)) | |
1029 | p[20] |= 0x20; /* should agree with INQUIRY */ | |
1030 | if (1 == pcontrol) | |
1031 | memset(p + 2, 0, sizeof(format_pg) - 2); | |
1032 | return sizeof(format_pg); | |
1da177e4 LT |
1033 | } |
1034 | ||
1035 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) | |
1036 | { /* Caching page for mode_sense */ | |
1037 | unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
1038 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; | |
1039 | ||
1040 | memcpy(p, caching_pg, sizeof(caching_pg)); | |
1041 | if (1 == pcontrol) | |
1042 | memset(p + 2, 0, sizeof(caching_pg) - 2); | |
1043 | return sizeof(caching_pg); | |
1044 | } | |
1045 | ||
1046 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) | |
1047 | { /* Control mode page for mode_sense */ | |
c65b1445 DG |
1048 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
1049 | 0, 0, 0, 0}; | |
1050 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, | |
1da177e4 LT |
1051 | 0, 0, 0x2, 0x4b}; |
1052 | ||
1053 | if (scsi_debug_dsense) | |
1054 | ctrl_m_pg[2] |= 0x4; | |
c65b1445 DG |
1055 | else |
1056 | ctrl_m_pg[2] &= ~0x4; | |
1da177e4 LT |
1057 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
1058 | if (1 == pcontrol) | |
c65b1445 DG |
1059 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
1060 | else if (2 == pcontrol) | |
1061 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); | |
1da177e4 LT |
1062 | return sizeof(ctrl_m_pg); |
1063 | } | |
1064 | ||
c65b1445 | 1065 | |
1da177e4 LT |
1066 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
1067 | { /* Informational Exceptions control mode page for mode_sense */ | |
c65b1445 DG |
1068 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
1069 | 0, 0, 0x0, 0x0}; | |
1070 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
1071 | 0, 0, 0x0, 0x0}; | |
1072 | ||
1da177e4 LT |
1073 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
1074 | if (1 == pcontrol) | |
c65b1445 DG |
1075 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
1076 | else if (2 == pcontrol) | |
1077 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); | |
1da177e4 LT |
1078 | return sizeof(iec_m_pg); |
1079 | } | |
1080 | ||
c65b1445 DG |
1081 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
1082 | { /* SAS SSP mode page - short format for mode_sense */ | |
1083 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, | |
1084 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; | |
1085 | ||
1086 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); | |
1087 | if (1 == pcontrol) | |
1088 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); | |
1089 | return sizeof(sas_sf_m_pg); | |
1090 | } | |
1091 | ||
1092 | ||
1093 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, | |
1094 | int target_dev_id) | |
1095 | { /* SAS phy control and discover mode page for mode_sense */ | |
1096 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, | |
1097 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1098 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1099 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1100 | 0x2, 0, 0, 0, 0, 0, 0, 0, | |
1101 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1102 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1103 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1104 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1105 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1106 | 0x3, 0, 0, 0, 0, 0, 0, 0, | |
1107 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1108 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1109 | }; | |
1110 | int port_a, port_b; | |
1111 | ||
1112 | port_a = target_dev_id + 1; | |
1113 | port_b = port_a + 1; | |
1114 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); | |
1115 | p[20] = (port_a >> 24); | |
1116 | p[21] = (port_a >> 16) & 0xff; | |
1117 | p[22] = (port_a >> 8) & 0xff; | |
1118 | p[23] = port_a & 0xff; | |
1119 | p[48 + 20] = (port_b >> 24); | |
1120 | p[48 + 21] = (port_b >> 16) & 0xff; | |
1121 | p[48 + 22] = (port_b >> 8) & 0xff; | |
1122 | p[48 + 23] = port_b & 0xff; | |
1123 | if (1 == pcontrol) | |
1124 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); | |
1125 | return sizeof(sas_pcd_m_pg); | |
1126 | } | |
1127 | ||
1128 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) | |
1129 | { /* SAS SSP shared protocol specific port mode subpage */ | |
1130 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, | |
1131 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1132 | }; | |
1133 | ||
1134 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); | |
1135 | if (1 == pcontrol) | |
1136 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); | |
1137 | return sizeof(sas_sha_m_pg); | |
1138 | } | |
1139 | ||
1da177e4 LT |
1140 | #define SDEBUG_MAX_MSENSE_SZ 256 |
1141 | ||
1142 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, | |
1143 | struct sdebug_dev_info * devip) | |
1144 | { | |
23183910 DG |
1145 | unsigned char dbd, llbaa; |
1146 | int pcontrol, pcode, subpcode, bd_len; | |
1da177e4 | 1147 | unsigned char dev_spec; |
23183910 | 1148 | int k, alloc_len, msense_6, offset, len, errsts, target_dev_id; |
1da177e4 LT |
1149 | unsigned char * ap; |
1150 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; | |
1151 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1152 | ||
c65b1445 | 1153 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 | 1154 | return errsts; |
23183910 | 1155 | dbd = !!(cmd[1] & 0x8); |
1da177e4 LT |
1156 | pcontrol = (cmd[2] & 0xc0) >> 6; |
1157 | pcode = cmd[2] & 0x3f; | |
1158 | subpcode = cmd[3]; | |
1159 | msense_6 = (MODE_SENSE == cmd[0]); | |
23183910 DG |
1160 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
1161 | if ((0 == scsi_debug_ptype) && (0 == dbd)) | |
1162 | bd_len = llbaa ? 16 : 8; | |
1163 | else | |
1164 | bd_len = 0; | |
1da177e4 LT |
1165 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
1166 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); | |
1167 | if (0x3 == pcontrol) { /* Saving values not supported */ | |
1168 | mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, | |
1169 | 0); | |
1170 | return check_condition_result; | |
1171 | } | |
c65b1445 DG |
1172 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
1173 | (devip->target * 1000) - 3; | |
23183910 DG |
1174 | /* set DPOFUA bit for disks */ |
1175 | if (0 == scsi_debug_ptype) | |
1176 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; | |
1177 | else | |
1178 | dev_spec = 0x0; | |
1da177e4 LT |
1179 | if (msense_6) { |
1180 | arr[2] = dev_spec; | |
23183910 | 1181 | arr[3] = bd_len; |
1da177e4 LT |
1182 | offset = 4; |
1183 | } else { | |
1184 | arr[3] = dev_spec; | |
23183910 DG |
1185 | if (16 == bd_len) |
1186 | arr[4] = 0x1; /* set LONGLBA bit */ | |
1187 | arr[7] = bd_len; /* assume 255 or less */ | |
1da177e4 LT |
1188 | offset = 8; |
1189 | } | |
1190 | ap = arr + offset; | |
28898873 FT |
1191 | if ((bd_len > 0) && (!sdebug_capacity)) |
1192 | sdebug_capacity = get_sdebug_capacity(); | |
1193 | ||
23183910 DG |
1194 | if (8 == bd_len) { |
1195 | if (sdebug_capacity > 0xfffffffe) { | |
1196 | ap[0] = 0xff; | |
1197 | ap[1] = 0xff; | |
1198 | ap[2] = 0xff; | |
1199 | ap[3] = 0xff; | |
1200 | } else { | |
1201 | ap[0] = (sdebug_capacity >> 24) & 0xff; | |
1202 | ap[1] = (sdebug_capacity >> 16) & 0xff; | |
1203 | ap[2] = (sdebug_capacity >> 8) & 0xff; | |
1204 | ap[3] = sdebug_capacity & 0xff; | |
1205 | } | |
597136ab MP |
1206 | ap[6] = (scsi_debug_sector_size >> 8) & 0xff; |
1207 | ap[7] = scsi_debug_sector_size & 0xff; | |
23183910 DG |
1208 | offset += bd_len; |
1209 | ap = arr + offset; | |
1210 | } else if (16 == bd_len) { | |
1211 | unsigned long long capac = sdebug_capacity; | |
1212 | ||
1213 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1214 | ap[7 - k] = capac & 0xff; | |
597136ab MP |
1215 | ap[12] = (scsi_debug_sector_size >> 24) & 0xff; |
1216 | ap[13] = (scsi_debug_sector_size >> 16) & 0xff; | |
1217 | ap[14] = (scsi_debug_sector_size >> 8) & 0xff; | |
1218 | ap[15] = scsi_debug_sector_size & 0xff; | |
23183910 DG |
1219 | offset += bd_len; |
1220 | ap = arr + offset; | |
1221 | } | |
1da177e4 | 1222 | |
c65b1445 DG |
1223 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
1224 | /* TODO: Control Extension page */ | |
1da177e4 LT |
1225 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1226 | 0); | |
1227 | return check_condition_result; | |
1228 | } | |
1229 | switch (pcode) { | |
1230 | case 0x1: /* Read-Write error recovery page, direct access */ | |
1231 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1232 | offset += len; | |
1233 | break; | |
1234 | case 0x2: /* Disconnect-Reconnect page, all devices */ | |
1235 | len = resp_disconnect_pg(ap, pcontrol, target); | |
1236 | offset += len; | |
1237 | break; | |
1238 | case 0x3: /* Format device page, direct access */ | |
1239 | len = resp_format_pg(ap, pcontrol, target); | |
1240 | offset += len; | |
1241 | break; | |
1242 | case 0x8: /* Caching page, direct access */ | |
1243 | len = resp_caching_pg(ap, pcontrol, target); | |
1244 | offset += len; | |
1245 | break; | |
1246 | case 0xa: /* Control Mode page, all devices */ | |
1247 | len = resp_ctrl_m_pg(ap, pcontrol, target); | |
1248 | offset += len; | |
1249 | break; | |
c65b1445 DG |
1250 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
1251 | if ((subpcode > 0x2) && (subpcode < 0xff)) { | |
1252 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1253 | INVALID_FIELD_IN_CDB, 0); | |
1254 | return check_condition_result; | |
1255 | } | |
1256 | len = 0; | |
1257 | if ((0x0 == subpcode) || (0xff == subpcode)) | |
1258 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1259 | if ((0x1 == subpcode) || (0xff == subpcode)) | |
1260 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, | |
1261 | target_dev_id); | |
1262 | if ((0x2 == subpcode) || (0xff == subpcode)) | |
1263 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1264 | offset += len; | |
1265 | break; | |
1da177e4 LT |
1266 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
1267 | len = resp_iec_m_pg(ap, pcontrol, target); | |
1268 | offset += len; | |
1269 | break; | |
1270 | case 0x3f: /* Read all Mode pages */ | |
c65b1445 DG |
1271 | if ((0 == subpcode) || (0xff == subpcode)) { |
1272 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1273 | len += resp_disconnect_pg(ap + len, pcontrol, target); | |
1274 | len += resp_format_pg(ap + len, pcontrol, target); | |
1275 | len += resp_caching_pg(ap + len, pcontrol, target); | |
1276 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); | |
1277 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1278 | if (0xff == subpcode) { | |
1279 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, | |
1280 | target, target_dev_id); | |
1281 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1282 | } | |
1283 | len += resp_iec_m_pg(ap + len, pcontrol, target); | |
1284 | } else { | |
1285 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1286 | INVALID_FIELD_IN_CDB, 0); | |
1287 | return check_condition_result; | |
1288 | } | |
1da177e4 LT |
1289 | offset += len; |
1290 | break; | |
1291 | default: | |
1292 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1293 | 0); | |
1294 | return check_condition_result; | |
1295 | } | |
1296 | if (msense_6) | |
1297 | arr[0] = offset - 1; | |
1298 | else { | |
1299 | arr[0] = ((offset - 2) >> 8) & 0xff; | |
1300 | arr[1] = (offset - 2) & 0xff; | |
1301 | } | |
1302 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); | |
1303 | } | |
1304 | ||
c65b1445 DG |
1305 | #define SDEBUG_MAX_MSELECT_SZ 512 |
1306 | ||
1307 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, | |
1308 | struct sdebug_dev_info * devip) | |
1309 | { | |
1310 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; | |
1311 | int param_len, res, errsts, mpage; | |
1312 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; | |
1313 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1314 | ||
1315 | if ((errsts = check_readiness(scp, 1, devip))) | |
1316 | return errsts; | |
1317 | memset(arr, 0, sizeof(arr)); | |
1318 | pf = cmd[1] & 0x10; | |
1319 | sp = cmd[1] & 0x1; | |
1320 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); | |
1321 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { | |
1322 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1323 | INVALID_FIELD_IN_CDB, 0); | |
1324 | return check_condition_result; | |
1325 | } | |
1326 | res = fetch_to_dev_buffer(scp, arr, param_len); | |
1327 | if (-1 == res) | |
1328 | return (DID_ERROR << 16); | |
1329 | else if ((res < param_len) && | |
1330 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
1331 | printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " | |
1332 | " IO sent=%d bytes\n", param_len, res); | |
1333 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); | |
1334 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); | |
23183910 | 1335 | if (md_len > 2) { |
c65b1445 DG |
1336 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
1337 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1338 | return check_condition_result; | |
1339 | } | |
1340 | off = bd_len + (mselect6 ? 4 : 8); | |
1341 | mpage = arr[off] & 0x3f; | |
1342 | ps = !!(arr[off] & 0x80); | |
1343 | if (ps) { | |
1344 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1345 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1346 | return check_condition_result; | |
1347 | } | |
1348 | spf = !!(arr[off] & 0x40); | |
1349 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : | |
1350 | (arr[off + 1] + 2); | |
1351 | if ((pg_len + off) > param_len) { | |
1352 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1353 | PARAMETER_LIST_LENGTH_ERR, 0); | |
1354 | return check_condition_result; | |
1355 | } | |
1356 | switch (mpage) { | |
1357 | case 0xa: /* Control Mode page */ | |
1358 | if (ctrl_m_pg[1] == arr[off + 1]) { | |
1359 | memcpy(ctrl_m_pg + 2, arr + off + 2, | |
1360 | sizeof(ctrl_m_pg) - 2); | |
1361 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); | |
1362 | return 0; | |
1363 | } | |
1364 | break; | |
1365 | case 0x1c: /* Informational Exceptions Mode page */ | |
1366 | if (iec_m_pg[1] == arr[off + 1]) { | |
1367 | memcpy(iec_m_pg + 2, arr + off + 2, | |
1368 | sizeof(iec_m_pg) - 2); | |
1369 | return 0; | |
1370 | } | |
1371 | break; | |
1372 | default: | |
1373 | break; | |
1374 | } | |
1375 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1376 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1377 | return check_condition_result; | |
1378 | } | |
1379 | ||
1380 | static int resp_temp_l_pg(unsigned char * arr) | |
1381 | { | |
1382 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, | |
1383 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, | |
1384 | }; | |
1385 | ||
1386 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); | |
1387 | return sizeof(temp_l_pg); | |
1388 | } | |
1389 | ||
1390 | static int resp_ie_l_pg(unsigned char * arr) | |
1391 | { | |
1392 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, | |
1393 | }; | |
1394 | ||
1395 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); | |
1396 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ | |
1397 | arr[4] = THRESHOLD_EXCEEDED; | |
1398 | arr[5] = 0xff; | |
1399 | } | |
1400 | return sizeof(ie_l_pg); | |
1401 | } | |
1402 | ||
1403 | #define SDEBUG_MAX_LSENSE_SZ 512 | |
1404 | ||
1405 | static int resp_log_sense(struct scsi_cmnd * scp, | |
1406 | struct sdebug_dev_info * devip) | |
1407 | { | |
23183910 | 1408 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n; |
c65b1445 DG |
1409 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
1410 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1411 | ||
1412 | if ((errsts = check_readiness(scp, 1, devip))) | |
1413 | return errsts; | |
1414 | memset(arr, 0, sizeof(arr)); | |
1415 | ppc = cmd[1] & 0x2; | |
1416 | sp = cmd[1] & 0x1; | |
1417 | if (ppc || sp) { | |
1418 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1419 | INVALID_FIELD_IN_CDB, 0); | |
1420 | return check_condition_result; | |
1421 | } | |
1422 | pcontrol = (cmd[2] & 0xc0) >> 6; | |
1423 | pcode = cmd[2] & 0x3f; | |
23183910 | 1424 | subpcode = cmd[3] & 0xff; |
c65b1445 DG |
1425 | alloc_len = (cmd[7] << 8) + cmd[8]; |
1426 | arr[0] = pcode; | |
23183910 DG |
1427 | if (0 == subpcode) { |
1428 | switch (pcode) { | |
1429 | case 0x0: /* Supported log pages log page */ | |
1430 | n = 4; | |
1431 | arr[n++] = 0x0; /* this page */ | |
1432 | arr[n++] = 0xd; /* Temperature */ | |
1433 | arr[n++] = 0x2f; /* Informational exceptions */ | |
1434 | arr[3] = n - 4; | |
1435 | break; | |
1436 | case 0xd: /* Temperature log page */ | |
1437 | arr[3] = resp_temp_l_pg(arr + 4); | |
1438 | break; | |
1439 | case 0x2f: /* Informational exceptions log page */ | |
1440 | arr[3] = resp_ie_l_pg(arr + 4); | |
1441 | break; | |
1442 | default: | |
1443 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1444 | INVALID_FIELD_IN_CDB, 0); | |
1445 | return check_condition_result; | |
1446 | } | |
1447 | } else if (0xff == subpcode) { | |
1448 | arr[0] |= 0x40; | |
1449 | arr[1] = subpcode; | |
1450 | switch (pcode) { | |
1451 | case 0x0: /* Supported log pages and subpages log page */ | |
1452 | n = 4; | |
1453 | arr[n++] = 0x0; | |
1454 | arr[n++] = 0x0; /* 0,0 page */ | |
1455 | arr[n++] = 0x0; | |
1456 | arr[n++] = 0xff; /* this page */ | |
1457 | arr[n++] = 0xd; | |
1458 | arr[n++] = 0x0; /* Temperature */ | |
1459 | arr[n++] = 0x2f; | |
1460 | arr[n++] = 0x0; /* Informational exceptions */ | |
1461 | arr[3] = n - 4; | |
1462 | break; | |
1463 | case 0xd: /* Temperature subpages */ | |
1464 | n = 4; | |
1465 | arr[n++] = 0xd; | |
1466 | arr[n++] = 0x0; /* Temperature */ | |
1467 | arr[3] = n - 4; | |
1468 | break; | |
1469 | case 0x2f: /* Informational exceptions subpages */ | |
1470 | n = 4; | |
1471 | arr[n++] = 0x2f; | |
1472 | arr[n++] = 0x0; /* Informational exceptions */ | |
1473 | arr[3] = n - 4; | |
1474 | break; | |
1475 | default: | |
1476 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1477 | INVALID_FIELD_IN_CDB, 0); | |
1478 | return check_condition_result; | |
1479 | } | |
1480 | } else { | |
c65b1445 DG |
1481 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
1482 | INVALID_FIELD_IN_CDB, 0); | |
1483 | return check_condition_result; | |
1484 | } | |
1485 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); | |
1486 | return fill_from_dev_buffer(scp, arr, | |
1487 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); | |
1488 | } | |
1489 | ||
19789100 FT |
1490 | static int check_device_access_params(struct sdebug_dev_info *devi, |
1491 | unsigned long long lba, unsigned int num) | |
1da177e4 | 1492 | { |
c65b1445 | 1493 | if (lba + num > sdebug_capacity) { |
19789100 | 1494 | mk_sense_buffer(devi, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, 0); |
1da177e4 LT |
1495 | return check_condition_result; |
1496 | } | |
c65b1445 DG |
1497 | /* transfer length excessive (tie in to block limits VPD page) */ |
1498 | if (num > sdebug_store_sectors) { | |
19789100 | 1499 | mk_sense_buffer(devi, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
c65b1445 DG |
1500 | return check_condition_result; |
1501 | } | |
19789100 FT |
1502 | return 0; |
1503 | } | |
1504 | ||
1505 | static int do_device_access(struct scsi_cmnd *scmd, | |
1506 | struct sdebug_dev_info *devi, | |
1507 | unsigned long long lba, unsigned int num, int write) | |
1508 | { | |
1509 | int ret; | |
1510 | unsigned int block, rest = 0; | |
1511 | int (*func)(struct scsi_cmnd *, unsigned char *, int); | |
1512 | ||
1513 | func = write ? fetch_to_dev_buffer : fill_from_dev_buffer; | |
1514 | ||
1515 | block = do_div(lba, sdebug_store_sectors); | |
1516 | if (block + num > sdebug_store_sectors) | |
1517 | rest = block + num - sdebug_store_sectors; | |
1518 | ||
597136ab MP |
1519 | ret = func(scmd, fake_storep + (block * scsi_debug_sector_size), |
1520 | (num - rest) * scsi_debug_sector_size); | |
19789100 | 1521 | if (!ret && rest) |
597136ab | 1522 | ret = func(scmd, fake_storep, rest * scsi_debug_sector_size); |
19789100 FT |
1523 | |
1524 | return ret; | |
1525 | } | |
1526 | ||
1527 | static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba, | |
1528 | unsigned int num, struct sdebug_dev_info *devip) | |
1529 | { | |
1530 | unsigned long iflags; | |
1531 | int ret; | |
1532 | ||
1533 | ret = check_device_access_params(devip, lba, num); | |
1534 | if (ret) | |
1535 | return ret; | |
1536 | ||
1da177e4 | 1537 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
c65b1445 DG |
1538 | (lba <= OPT_MEDIUM_ERR_ADDR) && |
1539 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { | |
1540 | /* claim unrecoverable read error */ | |
1da177e4 LT |
1541 | mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, |
1542 | 0); | |
c65b1445 DG |
1543 | /* set info field and valid bit for fixed descriptor */ |
1544 | if (0x70 == (devip->sense_buff[0] & 0x7f)) { | |
1545 | devip->sense_buff[0] |= 0x80; /* Valid bit */ | |
1546 | ret = OPT_MEDIUM_ERR_ADDR; | |
1547 | devip->sense_buff[3] = (ret >> 24) & 0xff; | |
1548 | devip->sense_buff[4] = (ret >> 16) & 0xff; | |
1549 | devip->sense_buff[5] = (ret >> 8) & 0xff; | |
1550 | devip->sense_buff[6] = ret & 0xff; | |
1551 | } | |
1da177e4 LT |
1552 | return check_condition_result; |
1553 | } | |
1554 | read_lock_irqsave(&atomic_rw, iflags); | |
19789100 | 1555 | ret = do_device_access(SCpnt, devip, lba, num, 0); |
1da177e4 LT |
1556 | read_unlock_irqrestore(&atomic_rw, iflags); |
1557 | return ret; | |
1558 | } | |
1559 | ||
19789100 FT |
1560 | static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba, |
1561 | unsigned int num, struct sdebug_dev_info *devip) | |
1da177e4 LT |
1562 | { |
1563 | unsigned long iflags; | |
19789100 | 1564 | int ret; |
1da177e4 | 1565 | |
19789100 FT |
1566 | ret = check_device_access_params(devip, lba, num); |
1567 | if (ret) | |
1568 | return ret; | |
1da177e4 LT |
1569 | |
1570 | write_lock_irqsave(&atomic_rw, iflags); | |
19789100 | 1571 | ret = do_device_access(SCpnt, devip, lba, num, 1); |
1da177e4 | 1572 | write_unlock_irqrestore(&atomic_rw, iflags); |
19789100 | 1573 | if (-1 == ret) |
1da177e4 | 1574 | return (DID_ERROR << 16); |
597136ab | 1575 | else if ((ret < (num * scsi_debug_sector_size)) && |
1da177e4 | 1576 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
c65b1445 | 1577 | printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " |
597136ab | 1578 | " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret); |
1da177e4 LT |
1579 | return 0; |
1580 | } | |
1581 | ||
c65b1445 | 1582 | #define SDEBUG_RLUN_ARR_SZ 256 |
1da177e4 LT |
1583 | |
1584 | static int resp_report_luns(struct scsi_cmnd * scp, | |
1585 | struct sdebug_dev_info * devip) | |
1586 | { | |
1587 | unsigned int alloc_len; | |
c65b1445 | 1588 | int lun_cnt, i, upper, num, n, wlun, lun; |
1da177e4 LT |
1589 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
1590 | int select_report = (int)cmd[2]; | |
1591 | struct scsi_lun *one_lun; | |
1592 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; | |
c65b1445 | 1593 | unsigned char * max_addr; |
1da177e4 LT |
1594 | |
1595 | alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); | |
c65b1445 | 1596 | if ((alloc_len < 4) || (select_report > 2)) { |
1da177e4 LT |
1597 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1598 | 0); | |
1599 | return check_condition_result; | |
1600 | } | |
1601 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ | |
1602 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); | |
1603 | lun_cnt = scsi_debug_max_luns; | |
c65b1445 DG |
1604 | if (1 == select_report) |
1605 | lun_cnt = 0; | |
1606 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) | |
1607 | --lun_cnt; | |
1608 | wlun = (select_report > 0) ? 1 : 0; | |
1609 | num = lun_cnt + wlun; | |
1610 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; | |
1611 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; | |
1612 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / | |
1613 | sizeof(struct scsi_lun)), num); | |
1614 | if (n < num) { | |
1615 | wlun = 0; | |
1616 | lun_cnt = n; | |
1617 | } | |
1da177e4 | 1618 | one_lun = (struct scsi_lun *) &arr[8]; |
c65b1445 DG |
1619 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
1620 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); | |
1621 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); | |
1622 | i++, lun++) { | |
1623 | upper = (lun >> 8) & 0x3f; | |
1da177e4 LT |
1624 | if (upper) |
1625 | one_lun[i].scsi_lun[0] = | |
1626 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); | |
c65b1445 DG |
1627 | one_lun[i].scsi_lun[1] = lun & 0xff; |
1628 | } | |
1629 | if (wlun) { | |
1630 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; | |
1631 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; | |
1632 | i++; | |
1da177e4 | 1633 | } |
c65b1445 | 1634 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
1da177e4 LT |
1635 | return fill_from_dev_buffer(scp, arr, |
1636 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); | |
1637 | } | |
1638 | ||
c639d14e FT |
1639 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
1640 | unsigned int num, struct sdebug_dev_info *devip) | |
1641 | { | |
1642 | int i, j, ret = -1; | |
1643 | unsigned char *kaddr, *buf; | |
1644 | unsigned int offset; | |
1645 | struct scatterlist *sg; | |
1646 | struct scsi_data_buffer *sdb = scsi_in(scp); | |
1647 | ||
1648 | /* better not to use temporary buffer. */ | |
1649 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); | |
1650 | if (!buf) | |
1651 | return ret; | |
1652 | ||
21a61829 | 1653 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
c639d14e FT |
1654 | |
1655 | offset = 0; | |
1656 | for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) { | |
1657 | kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); | |
1658 | if (!kaddr) | |
1659 | goto out; | |
1660 | ||
1661 | for (j = 0; j < sg->length; j++) | |
1662 | *(kaddr + sg->offset + j) ^= *(buf + offset + j); | |
1663 | ||
1664 | offset += sg->length; | |
1665 | kunmap_atomic(kaddr, KM_USER0); | |
1666 | } | |
1667 | ret = 0; | |
1668 | out: | |
1669 | kfree(buf); | |
1670 | ||
1671 | return ret; | |
1672 | } | |
1673 | ||
1da177e4 LT |
1674 | /* When timer goes off this function is called. */ |
1675 | static void timer_intr_handler(unsigned long indx) | |
1676 | { | |
1677 | struct sdebug_queued_cmd * sqcp; | |
1678 | unsigned long iflags; | |
1679 | ||
1680 | if (indx >= SCSI_DEBUG_CANQUEUE) { | |
1681 | printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " | |
1682 | "large\n"); | |
1683 | return; | |
1684 | } | |
1685 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
1686 | sqcp = &queued_arr[(int)indx]; | |
1687 | if (! sqcp->in_use) { | |
1688 | printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected " | |
1689 | "interrupt\n"); | |
1690 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1691 | return; | |
1692 | } | |
1693 | sqcp->in_use = 0; | |
1694 | if (sqcp->done_funct) { | |
1695 | sqcp->a_cmnd->result = sqcp->scsi_result; | |
1696 | sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */ | |
1697 | } | |
1698 | sqcp->done_funct = NULL; | |
1699 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1700 | } | |
1701 | ||
1da177e4 | 1702 | |
8dea0d02 FT |
1703 | static struct sdebug_dev_info * |
1704 | sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags) | |
5cb2fc06 FT |
1705 | { |
1706 | struct sdebug_dev_info *devip; | |
1707 | ||
1708 | devip = kzalloc(sizeof(*devip), flags); | |
1709 | if (devip) { | |
1710 | devip->sdbg_host = sdbg_host; | |
1711 | list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); | |
1712 | } | |
1713 | return devip; | |
1714 | } | |
1715 | ||
1da177e4 LT |
1716 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
1717 | { | |
1718 | struct sdebug_host_info * sdbg_host; | |
1719 | struct sdebug_dev_info * open_devip = NULL; | |
1720 | struct sdebug_dev_info * devip = | |
1721 | (struct sdebug_dev_info *)sdev->hostdata; | |
1722 | ||
1723 | if (devip) | |
1724 | return devip; | |
d1e4c9c5 FT |
1725 | sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
1726 | if (!sdbg_host) { | |
1da177e4 LT |
1727 | printk(KERN_ERR "Host info NULL\n"); |
1728 | return NULL; | |
1729 | } | |
1730 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { | |
1731 | if ((devip->used) && (devip->channel == sdev->channel) && | |
1732 | (devip->target == sdev->id) && | |
1733 | (devip->lun == sdev->lun)) | |
1734 | return devip; | |
1735 | else { | |
1736 | if ((!devip->used) && (!open_devip)) | |
1737 | open_devip = devip; | |
1738 | } | |
1739 | } | |
5cb2fc06 FT |
1740 | if (!open_devip) { /* try and make a new one */ |
1741 | open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); | |
1742 | if (!open_devip) { | |
1da177e4 LT |
1743 | printk(KERN_ERR "%s: out of memory at line %d\n", |
1744 | __FUNCTION__, __LINE__); | |
1745 | return NULL; | |
1746 | } | |
1da177e4 | 1747 | } |
a75869d1 FT |
1748 | |
1749 | open_devip->channel = sdev->channel; | |
1750 | open_devip->target = sdev->id; | |
1751 | open_devip->lun = sdev->lun; | |
1752 | open_devip->sdbg_host = sdbg_host; | |
1753 | open_devip->reset = 1; | |
1754 | open_devip->used = 1; | |
1755 | memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); | |
1756 | if (scsi_debug_dsense) | |
1757 | open_devip->sense_buff[0] = 0x72; | |
1758 | else { | |
1759 | open_devip->sense_buff[0] = 0x70; | |
1760 | open_devip->sense_buff[7] = 0xa; | |
1761 | } | |
1762 | if (sdev->lun == SAM2_WLUN_REPORT_LUNS) | |
1763 | open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; | |
1764 | ||
1765 | return open_devip; | |
1da177e4 LT |
1766 | } |
1767 | ||
8dea0d02 | 1768 | static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
1da177e4 | 1769 | { |
8dea0d02 FT |
1770 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
1771 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", | |
1772 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
75ad23bc | 1773 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); |
8dea0d02 FT |
1774 | return 0; |
1775 | } | |
1da177e4 | 1776 | |
8dea0d02 FT |
1777 | static int scsi_debug_slave_configure(struct scsi_device *sdp) |
1778 | { | |
1779 | struct sdebug_dev_info *devip; | |
a34c4e98 | 1780 | |
8dea0d02 FT |
1781 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
1782 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", | |
1783 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
1784 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) | |
1785 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; | |
1786 | devip = devInfoReg(sdp); | |
1787 | if (NULL == devip) | |
1788 | return 1; /* no resources, will be marked offline */ | |
1789 | sdp->hostdata = devip; | |
1790 | if (sdp->host->cmd_per_lun) | |
1791 | scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, | |
1792 | sdp->host->cmd_per_lun); | |
1793 | blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); | |
1794 | return 0; | |
1795 | } | |
1796 | ||
1797 | static void scsi_debug_slave_destroy(struct scsi_device *sdp) | |
1798 | { | |
1799 | struct sdebug_dev_info *devip = | |
1800 | (struct sdebug_dev_info *)sdp->hostdata; | |
a34c4e98 | 1801 | |
1da177e4 | 1802 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
8dea0d02 FT |
1803 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", |
1804 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
1805 | if (devip) { | |
1806 | /* make this slot avaliable for re-use */ | |
1807 | devip->used = 0; | |
1808 | sdp->hostdata = NULL; | |
1809 | } | |
1810 | } | |
1811 | ||
1812 | /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ | |
1813 | static int stop_queued_cmnd(struct scsi_cmnd *cmnd) | |
1814 | { | |
1815 | unsigned long iflags; | |
1816 | int k; | |
1817 | struct sdebug_queued_cmd *sqcp; | |
1818 | ||
1819 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
1820 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
1821 | sqcp = &queued_arr[k]; | |
1822 | if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { | |
1823 | del_timer_sync(&sqcp->cmnd_timer); | |
1824 | sqcp->in_use = 0; | |
1825 | sqcp->a_cmnd = NULL; | |
1826 | break; | |
1827 | } | |
1828 | } | |
1829 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1830 | return (k < SCSI_DEBUG_CANQUEUE) ? 1 : 0; | |
1831 | } | |
1832 | ||
1833 | /* Deletes (stops) timers of all queued commands */ | |
1834 | static void stop_all_queued(void) | |
1835 | { | |
1836 | unsigned long iflags; | |
1837 | int k; | |
1838 | struct sdebug_queued_cmd *sqcp; | |
1839 | ||
1840 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
1841 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
1842 | sqcp = &queued_arr[k]; | |
1843 | if (sqcp->in_use && sqcp->a_cmnd) { | |
1844 | del_timer_sync(&sqcp->cmnd_timer); | |
1845 | sqcp->in_use = 0; | |
1846 | sqcp->a_cmnd = NULL; | |
1847 | } | |
1848 | } | |
1849 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1da177e4 LT |
1850 | } |
1851 | ||
1852 | static int scsi_debug_abort(struct scsi_cmnd * SCpnt) | |
1853 | { | |
1854 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1855 | printk(KERN_INFO "scsi_debug: abort\n"); | |
1856 | ++num_aborts; | |
1857 | stop_queued_cmnd(SCpnt); | |
1858 | return SUCCESS; | |
1859 | } | |
1860 | ||
1861 | static int scsi_debug_biosparam(struct scsi_device *sdev, | |
1862 | struct block_device * bdev, sector_t capacity, int *info) | |
1863 | { | |
1864 | int res; | |
1865 | unsigned char *buf; | |
1866 | ||
1867 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1868 | printk(KERN_INFO "scsi_debug: biosparam\n"); | |
1869 | buf = scsi_bios_ptable(bdev); | |
1870 | if (buf) { | |
1871 | res = scsi_partsize(buf, capacity, | |
1872 | &info[2], &info[0], &info[1]); | |
1873 | kfree(buf); | |
1874 | if (! res) | |
1875 | return res; | |
1876 | } | |
1877 | info[0] = sdebug_heads; | |
1878 | info[1] = sdebug_sectors_per; | |
1879 | info[2] = sdebug_cylinders_per; | |
1880 | return 0; | |
1881 | } | |
1882 | ||
1883 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) | |
1884 | { | |
1885 | struct sdebug_dev_info * devip; | |
1886 | ||
1887 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1888 | printk(KERN_INFO "scsi_debug: device_reset\n"); | |
1889 | ++num_dev_resets; | |
1890 | if (SCpnt) { | |
1891 | devip = devInfoReg(SCpnt->device); | |
1892 | if (devip) | |
1893 | devip->reset = 1; | |
1894 | } | |
1895 | return SUCCESS; | |
1896 | } | |
1897 | ||
1898 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) | |
1899 | { | |
1900 | struct sdebug_host_info *sdbg_host; | |
1901 | struct sdebug_dev_info * dev_info; | |
1902 | struct scsi_device * sdp; | |
1903 | struct Scsi_Host * hp; | |
1904 | ||
1905 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1906 | printk(KERN_INFO "scsi_debug: bus_reset\n"); | |
1907 | ++num_bus_resets; | |
1908 | if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { | |
d1e4c9c5 | 1909 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
1da177e4 LT |
1910 | if (sdbg_host) { |
1911 | list_for_each_entry(dev_info, | |
1912 | &sdbg_host->dev_info_list, | |
1913 | dev_list) | |
1914 | dev_info->reset = 1; | |
1915 | } | |
1916 | } | |
1917 | return SUCCESS; | |
1918 | } | |
1919 | ||
1920 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) | |
1921 | { | |
1922 | struct sdebug_host_info * sdbg_host; | |
1923 | struct sdebug_dev_info * dev_info; | |
1924 | ||
1925 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1926 | printk(KERN_INFO "scsi_debug: host_reset\n"); | |
1927 | ++num_host_resets; | |
1928 | spin_lock(&sdebug_host_list_lock); | |
1929 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
1930 | list_for_each_entry(dev_info, &sdbg_host->dev_info_list, | |
1931 | dev_list) | |
1932 | dev_info->reset = 1; | |
1933 | } | |
1934 | spin_unlock(&sdebug_host_list_lock); | |
1935 | stop_all_queued(); | |
1936 | return SUCCESS; | |
1937 | } | |
1938 | ||
1da177e4 LT |
1939 | /* Initializes timers in queued array */ |
1940 | static void __init init_all_queued(void) | |
1941 | { | |
1942 | unsigned long iflags; | |
1943 | int k; | |
1944 | struct sdebug_queued_cmd * sqcp; | |
1945 | ||
1946 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
1947 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
1948 | sqcp = &queued_arr[k]; | |
1949 | init_timer(&sqcp->cmnd_timer); | |
1950 | sqcp->in_use = 0; | |
1951 | sqcp->a_cmnd = NULL; | |
1952 | } | |
1953 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1954 | } | |
1955 | ||
f58b0efb | 1956 | static void __init sdebug_build_parts(unsigned char *ramp, |
5f2578e5 | 1957 | unsigned long store_size) |
1da177e4 LT |
1958 | { |
1959 | struct partition * pp; | |
1960 | int starts[SDEBUG_MAX_PARTS + 2]; | |
1961 | int sectors_per_part, num_sectors, k; | |
1962 | int heads_by_sects, start_sec, end_sec; | |
1963 | ||
1964 | /* assume partition table already zeroed */ | |
f58b0efb | 1965 | if ((scsi_debug_num_parts < 1) || (store_size < 1048576)) |
1da177e4 LT |
1966 | return; |
1967 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { | |
1968 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; | |
1969 | printk(KERN_WARNING "scsi_debug:build_parts: reducing " | |
1970 | "partitions to %d\n", SDEBUG_MAX_PARTS); | |
1971 | } | |
c65b1445 | 1972 | num_sectors = (int)sdebug_store_sectors; |
1da177e4 LT |
1973 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
1974 | / scsi_debug_num_parts; | |
1975 | heads_by_sects = sdebug_heads * sdebug_sectors_per; | |
1976 | starts[0] = sdebug_sectors_per; | |
1977 | for (k = 1; k < scsi_debug_num_parts; ++k) | |
1978 | starts[k] = ((k * sectors_per_part) / heads_by_sects) | |
1979 | * heads_by_sects; | |
1980 | starts[scsi_debug_num_parts] = num_sectors; | |
1981 | starts[scsi_debug_num_parts + 1] = 0; | |
1982 | ||
1983 | ramp[510] = 0x55; /* magic partition markings */ | |
1984 | ramp[511] = 0xAA; | |
1985 | pp = (struct partition *)(ramp + 0x1be); | |
1986 | for (k = 0; starts[k + 1]; ++k, ++pp) { | |
1987 | start_sec = starts[k]; | |
1988 | end_sec = starts[k + 1] - 1; | |
1989 | pp->boot_ind = 0; | |
1990 | ||
1991 | pp->cyl = start_sec / heads_by_sects; | |
1992 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) | |
1993 | / sdebug_sectors_per; | |
1994 | pp->sector = (start_sec % sdebug_sectors_per) + 1; | |
1995 | ||
1996 | pp->end_cyl = end_sec / heads_by_sects; | |
1997 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) | |
1998 | / sdebug_sectors_per; | |
1999 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; | |
2000 | ||
2001 | pp->start_sect = start_sec; | |
2002 | pp->nr_sects = end_sec - start_sec + 1; | |
2003 | pp->sys_ind = 0x83; /* plain Linux partition */ | |
2004 | } | |
2005 | } | |
2006 | ||
2007 | static int schedule_resp(struct scsi_cmnd * cmnd, | |
2008 | struct sdebug_dev_info * devip, | |
2009 | done_funct_t done, int scsi_result, int delta_jiff) | |
2010 | { | |
2011 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) { | |
2012 | if (scsi_result) { | |
2013 | struct scsi_device * sdp = cmnd->device; | |
2014 | ||
c65b1445 DG |
2015 | printk(KERN_INFO "scsi_debug: <%u %u %u %u> " |
2016 | "non-zero result=0x%x\n", sdp->host->host_no, | |
2017 | sdp->channel, sdp->id, sdp->lun, scsi_result); | |
1da177e4 LT |
2018 | } |
2019 | } | |
2020 | if (cmnd && devip) { | |
2021 | /* simulate autosense by this driver */ | |
2022 | if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff)) | |
2023 | memcpy(cmnd->sense_buffer, devip->sense_buff, | |
2024 | (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ? | |
2025 | SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE); | |
2026 | } | |
2027 | if (delta_jiff <= 0) { | |
2028 | if (cmnd) | |
2029 | cmnd->result = scsi_result; | |
2030 | if (done) | |
2031 | done(cmnd); | |
2032 | return 0; | |
2033 | } else { | |
2034 | unsigned long iflags; | |
2035 | int k; | |
2036 | struct sdebug_queued_cmd * sqcp = NULL; | |
2037 | ||
2038 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2039 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2040 | sqcp = &queued_arr[k]; | |
2041 | if (! sqcp->in_use) | |
2042 | break; | |
2043 | } | |
2044 | if (k >= SCSI_DEBUG_CANQUEUE) { | |
2045 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2046 | printk(KERN_WARNING "scsi_debug: can_queue exceeded\n"); | |
2047 | return 1; /* report busy to mid level */ | |
2048 | } | |
2049 | sqcp->in_use = 1; | |
2050 | sqcp->a_cmnd = cmnd; | |
2051 | sqcp->scsi_result = scsi_result; | |
2052 | sqcp->done_funct = done; | |
2053 | sqcp->cmnd_timer.function = timer_intr_handler; | |
2054 | sqcp->cmnd_timer.data = k; | |
2055 | sqcp->cmnd_timer.expires = jiffies + delta_jiff; | |
2056 | add_timer(&sqcp->cmnd_timer); | |
2057 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2058 | if (cmnd) | |
2059 | cmnd->result = 0; | |
2060 | return 0; | |
2061 | } | |
2062 | } | |
23183910 DG |
2063 | /* Note: The following macros create attribute files in the |
2064 | /sys/module/scsi_debug/parameters directory. Unfortunately this | |
2065 | driver is unaware of a change and cannot trigger auxiliary actions | |
2066 | as it can when the corresponding attribute in the | |
2067 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. | |
2068 | */ | |
c65b1445 DG |
2069 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
2070 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); | |
2071 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); | |
2072 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); | |
2073 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); | |
23183910 | 2074 | module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); |
c65b1445 DG |
2075 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
2076 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); | |
2077 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); | |
2078 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); | |
2079 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); | |
2080 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); | |
2081 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); | |
2082 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); | |
23183910 DG |
2083 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, |
2084 | S_IRUGO | S_IWUSR); | |
597136ab | 2085 | module_param_named(sector_size, scsi_debug_sector_size, int, S_IRUGO); |
1da177e4 LT |
2086 | |
2087 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); | |
2088 | MODULE_DESCRIPTION("SCSI debug adapter driver"); | |
2089 | MODULE_LICENSE("GPL"); | |
2090 | MODULE_VERSION(SCSI_DEBUG_VERSION); | |
2091 | ||
2092 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); | |
2093 | MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); | |
c65b1445 DG |
2094 | MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); |
2095 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); | |
beb87c33 | 2096 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
23183910 | 2097 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
c65b1445 DG |
2098 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
2099 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); | |
1da177e4 | 2100 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
c65b1445 | 2101 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
6f3cbf55 | 2102 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
1da177e4 LT |
2103 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
2104 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])"); | |
c65b1445 | 2105 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); |
23183910 | 2106 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
597136ab | 2107 | MODULE_PARM_DESC(sector_size, "hardware sector size in bytes (def=512)"); |
1da177e4 LT |
2108 | |
2109 | ||
2110 | static char sdebug_info[256]; | |
2111 | ||
2112 | static const char * scsi_debug_info(struct Scsi_Host * shp) | |
2113 | { | |
2114 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " | |
2115 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, | |
2116 | scsi_debug_version_date, scsi_debug_dev_size_mb, | |
2117 | scsi_debug_opts); | |
2118 | return sdebug_info; | |
2119 | } | |
2120 | ||
2121 | /* scsi_debug_proc_info | |
2122 | * Used if the driver currently has no own support for /proc/scsi | |
2123 | */ | |
2124 | static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset, | |
2125 | int length, int inout) | |
2126 | { | |
2127 | int len, pos, begin; | |
2128 | int orig_length; | |
2129 | ||
2130 | orig_length = length; | |
2131 | ||
2132 | if (inout == 1) { | |
2133 | char arr[16]; | |
2134 | int minLen = length > 15 ? 15 : length; | |
2135 | ||
2136 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
2137 | return -EACCES; | |
2138 | memcpy(arr, buffer, minLen); | |
2139 | arr[minLen] = '\0'; | |
2140 | if (1 != sscanf(arr, "%d", &pos)) | |
2141 | return -EINVAL; | |
2142 | scsi_debug_opts = pos; | |
2143 | if (scsi_debug_every_nth != 0) | |
2144 | scsi_debug_cmnd_count = 0; | |
2145 | return length; | |
2146 | } | |
2147 | begin = 0; | |
2148 | pos = len = sprintf(buffer, "scsi_debug adapter driver, version " | |
2149 | "%s [%s]\n" | |
2150 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " | |
2151 | "every_nth=%d(curr:%d)\n" | |
2152 | "delay=%d, max_luns=%d, scsi_level=%d\n" | |
2153 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" | |
2154 | "number of aborts=%d, device_reset=%d, bus_resets=%d, " | |
2155 | "host_resets=%d\n", | |
2156 | SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, | |
2157 | scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, | |
2158 | scsi_debug_cmnd_count, scsi_debug_delay, | |
2159 | scsi_debug_max_luns, scsi_debug_scsi_level, | |
597136ab MP |
2160 | scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads, |
2161 | sdebug_sectors_per, num_aborts, num_dev_resets, num_bus_resets, | |
2162 | num_host_resets); | |
1da177e4 LT |
2163 | if (pos < offset) { |
2164 | len = 0; | |
2165 | begin = pos; | |
2166 | } | |
2167 | *start = buffer + (offset - begin); /* Start of wanted data */ | |
2168 | len -= (offset - begin); | |
2169 | if (len > length) | |
2170 | len = length; | |
2171 | return len; | |
2172 | } | |
2173 | ||
2174 | static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf) | |
2175 | { | |
2176 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); | |
2177 | } | |
2178 | ||
2179 | static ssize_t sdebug_delay_store(struct device_driver * ddp, | |
2180 | const char * buf, size_t count) | |
2181 | { | |
2182 | int delay; | |
2183 | char work[20]; | |
2184 | ||
2185 | if (1 == sscanf(buf, "%10s", work)) { | |
2186 | if ((1 == sscanf(work, "%d", &delay)) && (delay >= 0)) { | |
2187 | scsi_debug_delay = delay; | |
2188 | return count; | |
2189 | } | |
2190 | } | |
2191 | return -EINVAL; | |
2192 | } | |
2193 | DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show, | |
2194 | sdebug_delay_store); | |
2195 | ||
2196 | static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf) | |
2197 | { | |
2198 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); | |
2199 | } | |
2200 | ||
2201 | static ssize_t sdebug_opts_store(struct device_driver * ddp, | |
2202 | const char * buf, size_t count) | |
2203 | { | |
2204 | int opts; | |
2205 | char work[20]; | |
2206 | ||
2207 | if (1 == sscanf(buf, "%10s", work)) { | |
2208 | if (0 == strnicmp(work,"0x", 2)) { | |
2209 | if (1 == sscanf(&work[2], "%x", &opts)) | |
2210 | goto opts_done; | |
2211 | } else { | |
2212 | if (1 == sscanf(work, "%d", &opts)) | |
2213 | goto opts_done; | |
2214 | } | |
2215 | } | |
2216 | return -EINVAL; | |
2217 | opts_done: | |
2218 | scsi_debug_opts = opts; | |
2219 | scsi_debug_cmnd_count = 0; | |
2220 | return count; | |
2221 | } | |
2222 | DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show, | |
2223 | sdebug_opts_store); | |
2224 | ||
2225 | static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf) | |
2226 | { | |
2227 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); | |
2228 | } | |
2229 | static ssize_t sdebug_ptype_store(struct device_driver * ddp, | |
2230 | const char * buf, size_t count) | |
2231 | { | |
2232 | int n; | |
2233 | ||
2234 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2235 | scsi_debug_ptype = n; | |
2236 | return count; | |
2237 | } | |
2238 | return -EINVAL; | |
2239 | } | |
2240 | DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store); | |
2241 | ||
2242 | static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf) | |
2243 | { | |
2244 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); | |
2245 | } | |
2246 | static ssize_t sdebug_dsense_store(struct device_driver * ddp, | |
2247 | const char * buf, size_t count) | |
2248 | { | |
2249 | int n; | |
2250 | ||
2251 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2252 | scsi_debug_dsense = n; | |
2253 | return count; | |
2254 | } | |
2255 | return -EINVAL; | |
2256 | } | |
2257 | DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show, | |
2258 | sdebug_dsense_store); | |
2259 | ||
23183910 DG |
2260 | static ssize_t sdebug_fake_rw_show(struct device_driver * ddp, char * buf) |
2261 | { | |
2262 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); | |
2263 | } | |
2264 | static ssize_t sdebug_fake_rw_store(struct device_driver * ddp, | |
2265 | const char * buf, size_t count) | |
2266 | { | |
2267 | int n; | |
2268 | ||
2269 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2270 | scsi_debug_fake_rw = n; | |
2271 | return count; | |
2272 | } | |
2273 | return -EINVAL; | |
2274 | } | |
2275 | DRIVER_ATTR(fake_rw, S_IRUGO | S_IWUSR, sdebug_fake_rw_show, | |
2276 | sdebug_fake_rw_store); | |
2277 | ||
c65b1445 DG |
2278 | static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf) |
2279 | { | |
2280 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); | |
2281 | } | |
2282 | static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp, | |
2283 | const char * buf, size_t count) | |
2284 | { | |
2285 | int n; | |
2286 | ||
2287 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2288 | scsi_debug_no_lun_0 = n; | |
2289 | return count; | |
2290 | } | |
2291 | return -EINVAL; | |
2292 | } | |
2293 | DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show, | |
2294 | sdebug_no_lun_0_store); | |
2295 | ||
1da177e4 LT |
2296 | static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf) |
2297 | { | |
2298 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); | |
2299 | } | |
2300 | static ssize_t sdebug_num_tgts_store(struct device_driver * ddp, | |
2301 | const char * buf, size_t count) | |
2302 | { | |
2303 | int n; | |
2304 | ||
2305 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2306 | scsi_debug_num_tgts = n; | |
2307 | sdebug_max_tgts_luns(); | |
2308 | return count; | |
2309 | } | |
2310 | return -EINVAL; | |
2311 | } | |
2312 | DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show, | |
2313 | sdebug_num_tgts_store); | |
2314 | ||
2315 | static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf) | |
2316 | { | |
2317 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); | |
2318 | } | |
2319 | DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL); | |
2320 | ||
2321 | static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf) | |
2322 | { | |
2323 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); | |
2324 | } | |
2325 | DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL); | |
2326 | ||
2327 | static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf) | |
2328 | { | |
2329 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); | |
2330 | } | |
2331 | static ssize_t sdebug_every_nth_store(struct device_driver * ddp, | |
2332 | const char * buf, size_t count) | |
2333 | { | |
2334 | int nth; | |
2335 | ||
2336 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { | |
2337 | scsi_debug_every_nth = nth; | |
2338 | scsi_debug_cmnd_count = 0; | |
2339 | return count; | |
2340 | } | |
2341 | return -EINVAL; | |
2342 | } | |
2343 | DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show, | |
2344 | sdebug_every_nth_store); | |
2345 | ||
2346 | static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf) | |
2347 | { | |
2348 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); | |
2349 | } | |
2350 | static ssize_t sdebug_max_luns_store(struct device_driver * ddp, | |
2351 | const char * buf, size_t count) | |
2352 | { | |
2353 | int n; | |
2354 | ||
2355 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2356 | scsi_debug_max_luns = n; | |
2357 | sdebug_max_tgts_luns(); | |
2358 | return count; | |
2359 | } | |
2360 | return -EINVAL; | |
2361 | } | |
2362 | DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, | |
2363 | sdebug_max_luns_store); | |
2364 | ||
2365 | static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf) | |
2366 | { | |
2367 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); | |
2368 | } | |
2369 | DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL); | |
2370 | ||
c65b1445 DG |
2371 | static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf) |
2372 | { | |
2373 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); | |
2374 | } | |
2375 | static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp, | |
2376 | const char * buf, size_t count) | |
2377 | { | |
2378 | int n; | |
2379 | ||
2380 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2381 | scsi_debug_virtual_gb = n; | |
28898873 FT |
2382 | |
2383 | sdebug_capacity = get_sdebug_capacity(); | |
2384 | ||
c65b1445 DG |
2385 | return count; |
2386 | } | |
2387 | return -EINVAL; | |
2388 | } | |
2389 | DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show, | |
2390 | sdebug_virtual_gb_store); | |
2391 | ||
1da177e4 LT |
2392 | static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf) |
2393 | { | |
2394 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); | |
2395 | } | |
2396 | ||
2397 | static ssize_t sdebug_add_host_store(struct device_driver * ddp, | |
2398 | const char * buf, size_t count) | |
2399 | { | |
f3df41cf | 2400 | int delta_hosts; |
1da177e4 | 2401 | |
f3df41cf | 2402 | if (sscanf(buf, "%d", &delta_hosts) != 1) |
1da177e4 | 2403 | return -EINVAL; |
1da177e4 LT |
2404 | if (delta_hosts > 0) { |
2405 | do { | |
2406 | sdebug_add_adapter(); | |
2407 | } while (--delta_hosts); | |
2408 | } else if (delta_hosts < 0) { | |
2409 | do { | |
2410 | sdebug_remove_adapter(); | |
2411 | } while (++delta_hosts); | |
2412 | } | |
2413 | return count; | |
2414 | } | |
f3df41cf | 2415 | DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show, |
1da177e4 LT |
2416 | sdebug_add_host_store); |
2417 | ||
23183910 DG |
2418 | static ssize_t sdebug_vpd_use_hostno_show(struct device_driver * ddp, |
2419 | char * buf) | |
2420 | { | |
2421 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); | |
2422 | } | |
2423 | static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp, | |
2424 | const char * buf, size_t count) | |
2425 | { | |
2426 | int n; | |
2427 | ||
2428 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2429 | scsi_debug_vpd_use_hostno = n; | |
2430 | return count; | |
2431 | } | |
2432 | return -EINVAL; | |
2433 | } | |
2434 | DRIVER_ATTR(vpd_use_hostno, S_IRUGO | S_IWUSR, sdebug_vpd_use_hostno_show, | |
2435 | sdebug_vpd_use_hostno_store); | |
2436 | ||
597136ab MP |
2437 | static ssize_t sdebug_sector_size_show(struct device_driver * ddp, char * buf) |
2438 | { | |
2439 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_sector_size); | |
2440 | } | |
2441 | DRIVER_ATTR(sector_size, S_IRUGO, sdebug_sector_size_show, NULL); | |
2442 | ||
23183910 DG |
2443 | /* Note: The following function creates attribute files in the |
2444 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these | |
2445 | files (over those found in the /sys/module/scsi_debug/parameters | |
2446 | directory) is that auxiliary actions can be triggered when an attribute | |
2447 | is changed. For example see: sdebug_add_host_store() above. | |
2448 | */ | |
6ecaff7f | 2449 | static int do_create_driverfs_files(void) |
1da177e4 | 2450 | { |
6ecaff7f RD |
2451 | int ret; |
2452 | ||
2453 | ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host); | |
2454 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay); | |
2455 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); | |
2456 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense); | |
2457 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth); | |
23183910 | 2458 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
6ecaff7f | 2459 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
23183910 | 2460 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); |
6ecaff7f | 2461 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
23183910 | 2462 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
6ecaff7f RD |
2463 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
2464 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts); | |
2465 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); | |
23183910 DG |
2466 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); |
2467 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); | |
597136ab | 2468 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_sector_size); |
6ecaff7f | 2469 | return ret; |
1da177e4 LT |
2470 | } |
2471 | ||
2472 | static void do_remove_driverfs_files(void) | |
2473 | { | |
597136ab | 2474 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_sector_size); |
23183910 DG |
2475 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); |
2476 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); | |
1da177e4 LT |
2477 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
2478 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts); | |
2479 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype); | |
1da177e4 | 2480 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
23183910 DG |
2481 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
2482 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); | |
1da177e4 | 2483 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
23183910 | 2484 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
1da177e4 LT |
2485 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
2486 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense); | |
2487 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); | |
2488 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay); | |
2489 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); | |
2490 | } | |
2491 | ||
8dea0d02 FT |
2492 | static void pseudo_0_release(struct device *dev) |
2493 | { | |
2494 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2495 | printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n"); | |
2496 | } | |
2497 | ||
2498 | static struct device pseudo_primary = { | |
2499 | .bus_id = "pseudo_0", | |
2500 | .release = pseudo_0_release, | |
2501 | }; | |
2502 | ||
1da177e4 LT |
2503 | static int __init scsi_debug_init(void) |
2504 | { | |
5f2578e5 | 2505 | unsigned long sz; |
1da177e4 LT |
2506 | int host_to_add; |
2507 | int k; | |
6ecaff7f | 2508 | int ret; |
1da177e4 | 2509 | |
597136ab MP |
2510 | switch (scsi_debug_sector_size) { |
2511 | case 512: | |
2512 | case 1024: | |
2513 | case 2048: | |
2514 | case 4096: | |
2515 | break; | |
2516 | default: | |
2517 | printk(KERN_ERR "scsi_debug_init: invalid sector_size %u\n", | |
2518 | scsi_debug_sector_size); | |
2519 | return -EINVAL; | |
2520 | } | |
2521 | ||
1da177e4 LT |
2522 | if (scsi_debug_dev_size_mb < 1) |
2523 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ | |
5f2578e5 | 2524 | sz = (unsigned long)scsi_debug_dev_size_mb * 1048576; |
597136ab | 2525 | sdebug_store_sectors = sz / scsi_debug_sector_size; |
28898873 | 2526 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 LT |
2527 | |
2528 | /* play around with geometry, don't waste too much on track 0 */ | |
2529 | sdebug_heads = 8; | |
2530 | sdebug_sectors_per = 32; | |
2531 | if (scsi_debug_dev_size_mb >= 16) | |
2532 | sdebug_heads = 32; | |
2533 | else if (scsi_debug_dev_size_mb >= 256) | |
2534 | sdebug_heads = 64; | |
2535 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
2536 | (sdebug_sectors_per * sdebug_heads); | |
2537 | if (sdebug_cylinders_per >= 1024) { | |
2538 | /* other LLDs do this; implies >= 1GB ram disk ... */ | |
2539 | sdebug_heads = 255; | |
2540 | sdebug_sectors_per = 63; | |
2541 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
2542 | (sdebug_sectors_per * sdebug_heads); | |
2543 | } | |
2544 | ||
1da177e4 LT |
2545 | fake_storep = vmalloc(sz); |
2546 | if (NULL == fake_storep) { | |
2547 | printk(KERN_ERR "scsi_debug_init: out of memory, 1\n"); | |
2548 | return -ENOMEM; | |
2549 | } | |
2550 | memset(fake_storep, 0, sz); | |
2551 | if (scsi_debug_num_parts > 0) | |
f58b0efb | 2552 | sdebug_build_parts(fake_storep, sz); |
1da177e4 | 2553 | |
6ecaff7f RD |
2554 | ret = device_register(&pseudo_primary); |
2555 | if (ret < 0) { | |
2556 | printk(KERN_WARNING "scsi_debug: device_register error: %d\n", | |
2557 | ret); | |
2558 | goto free_vm; | |
2559 | } | |
2560 | ret = bus_register(&pseudo_lld_bus); | |
2561 | if (ret < 0) { | |
2562 | printk(KERN_WARNING "scsi_debug: bus_register error: %d\n", | |
2563 | ret); | |
2564 | goto dev_unreg; | |
2565 | } | |
2566 | ret = driver_register(&sdebug_driverfs_driver); | |
2567 | if (ret < 0) { | |
2568 | printk(KERN_WARNING "scsi_debug: driver_register error: %d\n", | |
2569 | ret); | |
2570 | goto bus_unreg; | |
2571 | } | |
2572 | ret = do_create_driverfs_files(); | |
2573 | if (ret < 0) { | |
2574 | printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n", | |
2575 | ret); | |
2576 | goto del_files; | |
2577 | } | |
1da177e4 | 2578 | |
6ecaff7f | 2579 | init_all_queued(); |
1da177e4 | 2580 | |
1da177e4 LT |
2581 | host_to_add = scsi_debug_add_host; |
2582 | scsi_debug_add_host = 0; | |
2583 | ||
2584 | for (k = 0; k < host_to_add; k++) { | |
2585 | if (sdebug_add_adapter()) { | |
2586 | printk(KERN_ERR "scsi_debug_init: " | |
2587 | "sdebug_add_adapter failed k=%d\n", k); | |
2588 | break; | |
2589 | } | |
2590 | } | |
2591 | ||
2592 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
2593 | printk(KERN_INFO "scsi_debug_init: built %d host(s)\n", | |
2594 | scsi_debug_add_host); | |
2595 | } | |
2596 | return 0; | |
6ecaff7f RD |
2597 | |
2598 | del_files: | |
2599 | do_remove_driverfs_files(); | |
2600 | driver_unregister(&sdebug_driverfs_driver); | |
2601 | bus_unreg: | |
2602 | bus_unregister(&pseudo_lld_bus); | |
2603 | dev_unreg: | |
2604 | device_unregister(&pseudo_primary); | |
2605 | free_vm: | |
2606 | vfree(fake_storep); | |
2607 | ||
2608 | return ret; | |
1da177e4 LT |
2609 | } |
2610 | ||
2611 | static void __exit scsi_debug_exit(void) | |
2612 | { | |
2613 | int k = scsi_debug_add_host; | |
2614 | ||
2615 | stop_all_queued(); | |
2616 | for (; k; k--) | |
2617 | sdebug_remove_adapter(); | |
2618 | do_remove_driverfs_files(); | |
2619 | driver_unregister(&sdebug_driverfs_driver); | |
2620 | bus_unregister(&pseudo_lld_bus); | |
2621 | device_unregister(&pseudo_primary); | |
2622 | ||
2623 | vfree(fake_storep); | |
2624 | } | |
2625 | ||
2626 | device_initcall(scsi_debug_init); | |
2627 | module_exit(scsi_debug_exit); | |
2628 | ||
1da177e4 LT |
2629 | static void sdebug_release_adapter(struct device * dev) |
2630 | { | |
2631 | struct sdebug_host_info *sdbg_host; | |
2632 | ||
2633 | sdbg_host = to_sdebug_host(dev); | |
2634 | kfree(sdbg_host); | |
2635 | } | |
2636 | ||
2637 | static int sdebug_add_adapter(void) | |
2638 | { | |
2639 | int k, devs_per_host; | |
2640 | int error = 0; | |
2641 | struct sdebug_host_info *sdbg_host; | |
8b40228f | 2642 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 | 2643 | |
c65b1445 | 2644 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
1da177e4 LT |
2645 | if (NULL == sdbg_host) { |
2646 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
2647 | __FUNCTION__, __LINE__); | |
2648 | return -ENOMEM; | |
2649 | } | |
2650 | ||
1da177e4 LT |
2651 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
2652 | ||
2653 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; | |
2654 | for (k = 0; k < devs_per_host; k++) { | |
5cb2fc06 FT |
2655 | sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); |
2656 | if (!sdbg_devinfo) { | |
1da177e4 LT |
2657 | printk(KERN_ERR "%s: out of memory at line %d\n", |
2658 | __FUNCTION__, __LINE__); | |
2659 | error = -ENOMEM; | |
2660 | goto clean; | |
2661 | } | |
1da177e4 LT |
2662 | } |
2663 | ||
2664 | spin_lock(&sdebug_host_list_lock); | |
2665 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); | |
2666 | spin_unlock(&sdebug_host_list_lock); | |
2667 | ||
2668 | sdbg_host->dev.bus = &pseudo_lld_bus; | |
2669 | sdbg_host->dev.parent = &pseudo_primary; | |
2670 | sdbg_host->dev.release = &sdebug_release_adapter; | |
2671 | sprintf(sdbg_host->dev.bus_id, "adapter%d", scsi_debug_add_host); | |
2672 | ||
2673 | error = device_register(&sdbg_host->dev); | |
2674 | ||
2675 | if (error) | |
2676 | goto clean; | |
2677 | ||
2678 | ++scsi_debug_add_host; | |
2679 | return error; | |
2680 | ||
2681 | clean: | |
8b40228f FT |
2682 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
2683 | dev_list) { | |
1da177e4 LT |
2684 | list_del(&sdbg_devinfo->dev_list); |
2685 | kfree(sdbg_devinfo); | |
2686 | } | |
2687 | ||
2688 | kfree(sdbg_host); | |
2689 | return error; | |
2690 | } | |
2691 | ||
2692 | static void sdebug_remove_adapter(void) | |
2693 | { | |
2694 | struct sdebug_host_info * sdbg_host = NULL; | |
2695 | ||
2696 | spin_lock(&sdebug_host_list_lock); | |
2697 | if (!list_empty(&sdebug_host_list)) { | |
2698 | sdbg_host = list_entry(sdebug_host_list.prev, | |
2699 | struct sdebug_host_info, host_list); | |
2700 | list_del(&sdbg_host->host_list); | |
2701 | } | |
2702 | spin_unlock(&sdebug_host_list_lock); | |
2703 | ||
2704 | if (!sdbg_host) | |
2705 | return; | |
2706 | ||
2707 | device_unregister(&sdbg_host->dev); | |
2708 | --scsi_debug_add_host; | |
2709 | } | |
2710 | ||
639db475 FT |
2711 | static |
2712 | int scsi_debug_queuecommand(struct scsi_cmnd *SCpnt, done_funct_t done) | |
2713 | { | |
2714 | unsigned char *cmd = (unsigned char *) SCpnt->cmnd; | |
2715 | int len, k; | |
2716 | unsigned int num; | |
2717 | unsigned long long lba; | |
2718 | int errsts = 0; | |
2719 | int target = SCpnt->device->id; | |
2720 | struct sdebug_dev_info *devip = NULL; | |
2721 | int inj_recovered = 0; | |
2722 | int inj_transport = 0; | |
2723 | int delay_override = 0; | |
2724 | ||
2725 | scsi_set_resid(SCpnt, 0); | |
2726 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { | |
2727 | printk(KERN_INFO "scsi_debug: cmd "); | |
2728 | for (k = 0, len = SCpnt->cmd_len; k < len; ++k) | |
2729 | printk("%02x ", (int)cmd[k]); | |
2730 | printk("\n"); | |
2731 | } | |
2732 | ||
2733 | if (target == SCpnt->device->host->hostt->this_id) { | |
2734 | printk(KERN_INFO "scsi_debug: initiator's id used as " | |
2735 | "target!\n"); | |
2736 | return schedule_resp(SCpnt, NULL, done, | |
2737 | DID_NO_CONNECT << 16, 0); | |
2738 | } | |
2739 | ||
2740 | if ((SCpnt->device->lun >= scsi_debug_max_luns) && | |
2741 | (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) | |
2742 | return schedule_resp(SCpnt, NULL, done, | |
2743 | DID_NO_CONNECT << 16, 0); | |
2744 | devip = devInfoReg(SCpnt->device); | |
2745 | if (NULL == devip) | |
2746 | return schedule_resp(SCpnt, NULL, done, | |
2747 | DID_NO_CONNECT << 16, 0); | |
2748 | ||
2749 | if ((scsi_debug_every_nth != 0) && | |
2750 | (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { | |
2751 | scsi_debug_cmnd_count = 0; | |
2752 | if (scsi_debug_every_nth < -1) | |
2753 | scsi_debug_every_nth = -1; | |
2754 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) | |
2755 | return 0; /* ignore command causing timeout */ | |
2756 | else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) | |
2757 | inj_recovered = 1; /* to reads and writes below */ | |
2758 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts) | |
2759 | inj_transport = 1; /* to reads and writes below */ | |
2760 | } | |
2761 | ||
2762 | if (devip->wlun) { | |
2763 | switch (*cmd) { | |
2764 | case INQUIRY: | |
2765 | case REQUEST_SENSE: | |
2766 | case TEST_UNIT_READY: | |
2767 | case REPORT_LUNS: | |
2768 | break; /* only allowable wlun commands */ | |
2769 | default: | |
2770 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2771 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x " | |
2772 | "not supported for wlun\n", *cmd); | |
2773 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
2774 | INVALID_OPCODE, 0); | |
2775 | errsts = check_condition_result; | |
2776 | return schedule_resp(SCpnt, devip, done, errsts, | |
2777 | 0); | |
2778 | } | |
2779 | } | |
2780 | ||
2781 | switch (*cmd) { | |
2782 | case INQUIRY: /* mandatory, ignore unit attention */ | |
2783 | delay_override = 1; | |
2784 | errsts = resp_inquiry(SCpnt, target, devip); | |
2785 | break; | |
2786 | case REQUEST_SENSE: /* mandatory, ignore unit attention */ | |
2787 | delay_override = 1; | |
2788 | errsts = resp_requests(SCpnt, devip); | |
2789 | break; | |
2790 | case REZERO_UNIT: /* actually this is REWIND for SSC */ | |
2791 | case START_STOP: | |
2792 | errsts = resp_start_stop(SCpnt, devip); | |
2793 | break; | |
2794 | case ALLOW_MEDIUM_REMOVAL: | |
2795 | errsts = check_readiness(SCpnt, 1, devip); | |
2796 | if (errsts) | |
2797 | break; | |
2798 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2799 | printk(KERN_INFO "scsi_debug: Medium removal %s\n", | |
2800 | cmd[4] ? "inhibited" : "enabled"); | |
2801 | break; | |
2802 | case SEND_DIAGNOSTIC: /* mandatory */ | |
2803 | errsts = check_readiness(SCpnt, 1, devip); | |
2804 | break; | |
2805 | case TEST_UNIT_READY: /* mandatory */ | |
2806 | delay_override = 1; | |
2807 | errsts = check_readiness(SCpnt, 0, devip); | |
2808 | break; | |
2809 | case RESERVE: | |
2810 | errsts = check_readiness(SCpnt, 1, devip); | |
2811 | break; | |
2812 | case RESERVE_10: | |
2813 | errsts = check_readiness(SCpnt, 1, devip); | |
2814 | break; | |
2815 | case RELEASE: | |
2816 | errsts = check_readiness(SCpnt, 1, devip); | |
2817 | break; | |
2818 | case RELEASE_10: | |
2819 | errsts = check_readiness(SCpnt, 1, devip); | |
2820 | break; | |
2821 | case READ_CAPACITY: | |
2822 | errsts = resp_readcap(SCpnt, devip); | |
2823 | break; | |
2824 | case SERVICE_ACTION_IN: | |
2825 | if (SAI_READ_CAPACITY_16 != cmd[1]) { | |
2826 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
2827 | INVALID_OPCODE, 0); | |
2828 | errsts = check_condition_result; | |
2829 | break; | |
2830 | } | |
2831 | errsts = resp_readcap16(SCpnt, devip); | |
2832 | break; | |
2833 | case MAINTENANCE_IN: | |
2834 | if (MI_REPORT_TARGET_PGS != cmd[1]) { | |
2835 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
2836 | INVALID_OPCODE, 0); | |
2837 | errsts = check_condition_result; | |
2838 | break; | |
2839 | } | |
2840 | errsts = resp_report_tgtpgs(SCpnt, devip); | |
2841 | break; | |
2842 | case READ_16: | |
2843 | case READ_12: | |
2844 | case READ_10: | |
2845 | case READ_6: | |
2846 | errsts = check_readiness(SCpnt, 0, devip); | |
2847 | if (errsts) | |
2848 | break; | |
2849 | if (scsi_debug_fake_rw) | |
2850 | break; | |
2851 | get_data_transfer_info(cmd, &lba, &num); | |
2852 | errsts = resp_read(SCpnt, lba, num, devip); | |
2853 | if (inj_recovered && (0 == errsts)) { | |
2854 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
2855 | THRESHOLD_EXCEEDED, 0); | |
2856 | errsts = check_condition_result; | |
2857 | } else if (inj_transport && (0 == errsts)) { | |
2858 | mk_sense_buffer(devip, ABORTED_COMMAND, | |
2859 | TRANSPORT_PROBLEM, ACK_NAK_TO); | |
2860 | errsts = check_condition_result; | |
2861 | } | |
2862 | break; | |
2863 | case REPORT_LUNS: /* mandatory, ignore unit attention */ | |
2864 | delay_override = 1; | |
2865 | errsts = resp_report_luns(SCpnt, devip); | |
2866 | break; | |
2867 | case VERIFY: /* 10 byte SBC-2 command */ | |
2868 | errsts = check_readiness(SCpnt, 0, devip); | |
2869 | break; | |
2870 | case WRITE_16: | |
2871 | case WRITE_12: | |
2872 | case WRITE_10: | |
2873 | case WRITE_6: | |
2874 | errsts = check_readiness(SCpnt, 0, devip); | |
2875 | if (errsts) | |
2876 | break; | |
2877 | if (scsi_debug_fake_rw) | |
2878 | break; | |
2879 | get_data_transfer_info(cmd, &lba, &num); | |
2880 | errsts = resp_write(SCpnt, lba, num, devip); | |
2881 | if (inj_recovered && (0 == errsts)) { | |
2882 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
2883 | THRESHOLD_EXCEEDED, 0); | |
2884 | errsts = check_condition_result; | |
2885 | } | |
2886 | break; | |
2887 | case MODE_SENSE: | |
2888 | case MODE_SENSE_10: | |
2889 | errsts = resp_mode_sense(SCpnt, target, devip); | |
2890 | break; | |
2891 | case MODE_SELECT: | |
2892 | errsts = resp_mode_select(SCpnt, 1, devip); | |
2893 | break; | |
2894 | case MODE_SELECT_10: | |
2895 | errsts = resp_mode_select(SCpnt, 0, devip); | |
2896 | break; | |
2897 | case LOG_SENSE: | |
2898 | errsts = resp_log_sense(SCpnt, devip); | |
2899 | break; | |
2900 | case SYNCHRONIZE_CACHE: | |
2901 | delay_override = 1; | |
2902 | errsts = check_readiness(SCpnt, 0, devip); | |
2903 | break; | |
2904 | case WRITE_BUFFER: | |
2905 | errsts = check_readiness(SCpnt, 1, devip); | |
2906 | break; | |
2907 | case XDWRITEREAD_10: | |
2908 | if (!scsi_bidi_cmnd(SCpnt)) { | |
2909 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
2910 | INVALID_FIELD_IN_CDB, 0); | |
2911 | errsts = check_condition_result; | |
2912 | break; | |
2913 | } | |
2914 | ||
2915 | errsts = check_readiness(SCpnt, 0, devip); | |
2916 | if (errsts) | |
2917 | break; | |
2918 | if (scsi_debug_fake_rw) | |
2919 | break; | |
2920 | get_data_transfer_info(cmd, &lba, &num); | |
2921 | errsts = resp_read(SCpnt, lba, num, devip); | |
2922 | if (errsts) | |
2923 | break; | |
2924 | errsts = resp_write(SCpnt, lba, num, devip); | |
2925 | if (errsts) | |
2926 | break; | |
2927 | errsts = resp_xdwriteread(SCpnt, lba, num, devip); | |
2928 | break; | |
2929 | default: | |
2930 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2931 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " | |
2932 | "supported\n", *cmd); | |
2933 | errsts = check_readiness(SCpnt, 1, devip); | |
2934 | if (errsts) | |
2935 | break; /* Unit attention takes precedence */ | |
2936 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); | |
2937 | errsts = check_condition_result; | |
2938 | break; | |
2939 | } | |
2940 | return schedule_resp(SCpnt, devip, done, errsts, | |
2941 | (delay_override ? 0 : scsi_debug_delay)); | |
2942 | } | |
2943 | ||
9e603ca0 FT |
2944 | static struct scsi_host_template sdebug_driver_template = { |
2945 | .proc_info = scsi_debug_proc_info, | |
2946 | .proc_name = sdebug_proc_name, | |
2947 | .name = "SCSI DEBUG", | |
2948 | .info = scsi_debug_info, | |
2949 | .slave_alloc = scsi_debug_slave_alloc, | |
2950 | .slave_configure = scsi_debug_slave_configure, | |
2951 | .slave_destroy = scsi_debug_slave_destroy, | |
2952 | .ioctl = scsi_debug_ioctl, | |
2953 | .queuecommand = scsi_debug_queuecommand, | |
2954 | .eh_abort_handler = scsi_debug_abort, | |
2955 | .eh_bus_reset_handler = scsi_debug_bus_reset, | |
2956 | .eh_device_reset_handler = scsi_debug_device_reset, | |
2957 | .eh_host_reset_handler = scsi_debug_host_reset, | |
2958 | .bios_param = scsi_debug_biosparam, | |
2959 | .can_queue = SCSI_DEBUG_CANQUEUE, | |
2960 | .this_id = 7, | |
2961 | .sg_tablesize = 256, | |
2962 | .cmd_per_lun = 16, | |
2963 | .max_sectors = 0xffff, | |
2964 | .use_clustering = DISABLE_CLUSTERING, | |
2965 | .module = THIS_MODULE, | |
2966 | }; | |
2967 | ||
1da177e4 LT |
2968 | static int sdebug_driver_probe(struct device * dev) |
2969 | { | |
2970 | int error = 0; | |
2971 | struct sdebug_host_info *sdbg_host; | |
2972 | struct Scsi_Host *hpnt; | |
2973 | ||
2974 | sdbg_host = to_sdebug_host(dev); | |
2975 | ||
2976 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); | |
2977 | if (NULL == hpnt) { | |
2978 | printk(KERN_ERR "%s: scsi_register failed\n", __FUNCTION__); | |
2979 | error = -ENODEV; | |
2980 | return error; | |
2981 | } | |
2982 | ||
2983 | sdbg_host->shost = hpnt; | |
2984 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; | |
2985 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) | |
2986 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
2987 | else | |
2988 | hpnt->max_id = scsi_debug_num_tgts; | |
c65b1445 | 2989 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
1da177e4 LT |
2990 | |
2991 | error = scsi_add_host(hpnt, &sdbg_host->dev); | |
2992 | if (error) { | |
2993 | printk(KERN_ERR "%s: scsi_add_host failed\n", __FUNCTION__); | |
2994 | error = -ENODEV; | |
2995 | scsi_host_put(hpnt); | |
2996 | } else | |
2997 | scsi_scan_host(hpnt); | |
2998 | ||
2999 | ||
3000 | return error; | |
3001 | } | |
3002 | ||
3003 | static int sdebug_driver_remove(struct device * dev) | |
3004 | { | |
1da177e4 | 3005 | struct sdebug_host_info *sdbg_host; |
8b40228f | 3006 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 LT |
3007 | |
3008 | sdbg_host = to_sdebug_host(dev); | |
3009 | ||
3010 | if (!sdbg_host) { | |
3011 | printk(KERN_ERR "%s: Unable to locate host info\n", | |
3012 | __FUNCTION__); | |
3013 | return -ENODEV; | |
3014 | } | |
3015 | ||
3016 | scsi_remove_host(sdbg_host->shost); | |
3017 | ||
8b40228f FT |
3018 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
3019 | dev_list) { | |
1da177e4 LT |
3020 | list_del(&sdbg_devinfo->dev_list); |
3021 | kfree(sdbg_devinfo); | |
3022 | } | |
3023 | ||
3024 | scsi_host_put(sdbg_host->shost); | |
3025 | return 0; | |
3026 | } | |
3027 | ||
8dea0d02 FT |
3028 | static int pseudo_lld_bus_match(struct device *dev, |
3029 | struct device_driver *dev_driver) | |
1da177e4 | 3030 | { |
8dea0d02 | 3031 | return 1; |
1da177e4 | 3032 | } |
8dea0d02 FT |
3033 | |
3034 | static struct bus_type pseudo_lld_bus = { | |
3035 | .name = "pseudo", | |
3036 | .match = pseudo_lld_bus_match, | |
3037 | .probe = sdebug_driver_probe, | |
3038 | .remove = sdebug_driver_remove, | |
3039 | }; |