Commit | Line | Data |
---|---|---|
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 | |
1da177e4 LT |
97 | |
98 | /* bit mask values for scsi_debug_opts */ | |
99 | #define SCSI_DEBUG_OPT_NOISE 1 | |
100 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 | |
101 | #define SCSI_DEBUG_OPT_TIMEOUT 4 | |
102 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 | |
6f3cbf55 | 103 | #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
1da177e4 LT |
104 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
105 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
106 | * - a RECOVERED_ERROR is simulated on successful read and write | |
107 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
108 | * - a TRANSPORT_ERROR is simulated on successful read and write |
109 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
110 | * |
111 | * When "every_nth" < 0 then after "- every_nth" commands: | |
112 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
113 | * - a RECOVERED_ERROR is simulated on successful read and write | |
114 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
115 | * - a TRANSPORT_ERROR is simulated on successful read and write |
116 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
117 | * This will continue until some other action occurs (e.g. the user |
118 | * writing a new value (other than -1 or 1) to every_nth via sysfs). | |
119 | */ | |
120 | ||
121 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this | |
122 | * sector on read commands: */ | |
123 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ | |
124 | ||
125 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) | |
126 | * or "peripheral device" addressing (value 0) */ | |
127 | #define SAM2_LUN_ADDRESS_METHOD 0 | |
c65b1445 | 128 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
1da177e4 LT |
129 | |
130 | static int scsi_debug_add_host = DEF_NUM_HOST; | |
131 | static int scsi_debug_delay = DEF_DELAY; | |
132 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; | |
133 | static int scsi_debug_every_nth = DEF_EVERY_NTH; | |
134 | static int scsi_debug_max_luns = DEF_MAX_LUNS; | |
135 | static int scsi_debug_num_parts = DEF_NUM_PARTS; | |
136 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ | |
137 | static int scsi_debug_opts = DEF_OPTS; | |
138 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; | |
139 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ | |
140 | static int scsi_debug_dsense = DEF_D_SENSE; | |
c65b1445 DG |
141 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
142 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; | |
23183910 DG |
143 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
144 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; | |
1da177e4 LT |
145 | |
146 | static int scsi_debug_cmnd_count = 0; | |
147 | ||
148 | #define DEV_READONLY(TGT) (0) | |
149 | #define DEV_REMOVEABLE(TGT) (0) | |
150 | ||
c65b1445 | 151 | static unsigned int sdebug_store_sectors; |
1da177e4 LT |
152 | static sector_t sdebug_capacity; /* in sectors */ |
153 | ||
154 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages | |
155 | may still need them */ | |
156 | static int sdebug_heads; /* heads per disk */ | |
157 | static int sdebug_cylinders_per; /* cylinders per surface */ | |
158 | static int sdebug_sectors_per; /* sectors per cylinder */ | |
159 | ||
160 | /* default sector size is 512 bytes, 2**9 bytes */ | |
161 | #define POW2_SECT_SIZE 9 | |
162 | #define SECT_SIZE (1 << POW2_SECT_SIZE) | |
163 | #define SECT_SIZE_PER(TGT) SECT_SIZE | |
164 | ||
165 | #define SDEBUG_MAX_PARTS 4 | |
166 | ||
167 | #define SDEBUG_SENSE_LEN 32 | |
168 | ||
9e603ca0 FT |
169 | #define SCSI_DEBUG_CANQUEUE 255 |
170 | #define SCSI_DEBUG_MAX_CMD_LEN 16 | |
171 | ||
1da177e4 LT |
172 | struct sdebug_dev_info { |
173 | struct list_head dev_list; | |
174 | unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ | |
175 | unsigned int channel; | |
176 | unsigned int target; | |
177 | unsigned int lun; | |
178 | struct sdebug_host_info *sdbg_host; | |
c65b1445 | 179 | unsigned int wlun; |
1da177e4 | 180 | char reset; |
c65b1445 | 181 | char stopped; |
1da177e4 LT |
182 | char used; |
183 | }; | |
184 | ||
185 | struct sdebug_host_info { | |
186 | struct list_head host_list; | |
187 | struct Scsi_Host *shost; | |
188 | struct device dev; | |
189 | struct list_head dev_info_list; | |
190 | }; | |
191 | ||
192 | #define to_sdebug_host(d) \ | |
193 | container_of(d, struct sdebug_host_info, dev) | |
194 | ||
195 | static LIST_HEAD(sdebug_host_list); | |
196 | static DEFINE_SPINLOCK(sdebug_host_list_lock); | |
197 | ||
198 | typedef void (* done_funct_t) (struct scsi_cmnd *); | |
199 | ||
200 | struct sdebug_queued_cmd { | |
201 | int in_use; | |
202 | struct timer_list cmnd_timer; | |
203 | done_funct_t done_funct; | |
204 | struct scsi_cmnd * a_cmnd; | |
205 | int scsi_result; | |
206 | }; | |
207 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; | |
208 | ||
1da177e4 LT |
209 | static unsigned char * fake_storep; /* ramdisk storage */ |
210 | ||
211 | static int num_aborts = 0; | |
212 | static int num_dev_resets = 0; | |
213 | static int num_bus_resets = 0; | |
214 | static int num_host_resets = 0; | |
215 | ||
216 | static DEFINE_SPINLOCK(queued_arr_lock); | |
217 | static DEFINE_RWLOCK(atomic_rw); | |
218 | ||
219 | static char sdebug_proc_name[] = "scsi_debug"; | |
220 | ||
1da177e4 LT |
221 | static struct bus_type pseudo_lld_bus; |
222 | ||
223 | static struct device_driver sdebug_driverfs_driver = { | |
224 | .name = sdebug_proc_name, | |
225 | .bus = &pseudo_lld_bus, | |
1da177e4 LT |
226 | }; |
227 | ||
228 | static const int check_condition_result = | |
229 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | |
230 | ||
c65b1445 DG |
231 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
232 | 0, 0, 0x2, 0x4b}; | |
233 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
234 | 0, 0, 0x0, 0x0}; | |
235 | ||
1da177e4 LT |
236 | static int sdebug_add_adapter(void); |
237 | static void sdebug_remove_adapter(void); | |
1da177e4 | 238 | |
8dea0d02 FT |
239 | static void sdebug_max_tgts_luns(void) |
240 | { | |
241 | struct sdebug_host_info *sdbg_host; | |
242 | struct Scsi_Host *hpnt; | |
243 | ||
244 | spin_lock(&sdebug_host_list_lock); | |
245 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
246 | hpnt = sdbg_host->shost; | |
247 | if ((hpnt->this_id >= 0) && | |
248 | (scsi_debug_num_tgts > hpnt->this_id)) | |
249 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
250 | else | |
251 | hpnt->max_id = scsi_debug_num_tgts; | |
252 | /* scsi_debug_max_luns; */ | |
253 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; | |
254 | } | |
255 | spin_unlock(&sdebug_host_list_lock); | |
256 | } | |
257 | ||
258 | static void mk_sense_buffer(struct sdebug_dev_info *devip, int key, | |
259 | int asc, int asq) | |
260 | { | |
261 | unsigned char *sbuff; | |
262 | ||
263 | sbuff = devip->sense_buff; | |
264 | memset(sbuff, 0, SDEBUG_SENSE_LEN); | |
265 | ||
266 | scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); | |
267 | ||
268 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
269 | printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " | |
270 | "[0x%x,0x%x,0x%x]\n", key, asc, asq); | |
271 | } | |
1da177e4 | 272 | |
3de9f944 FT |
273 | static void get_data_transfer_info(unsigned char *cmd, |
274 | unsigned long long *lba, unsigned int *num) | |
275 | { | |
3de9f944 FT |
276 | switch (*cmd) { |
277 | case WRITE_16: | |
278 | case READ_16: | |
d5cdc989 FT |
279 | *lba = (u64)cmd[9] | (u64)cmd[8] << 8 | |
280 | (u64)cmd[7] << 16 | (u64)cmd[6] << 24 | | |
281 | (u64)cmd[5] << 32 | (u64)cmd[4] << 40 | | |
282 | (u64)cmd[3] << 48 | (u64)cmd[2] << 56; | |
283 | ||
284 | *num = (u32)cmd[13] | (u32)cmd[12] << 8 | (u32)cmd[11] << 16 | | |
285 | (u32)cmd[10] << 24; | |
3de9f944 FT |
286 | break; |
287 | case WRITE_12: | |
288 | case READ_12: | |
d5cdc989 FT |
289 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
290 | (u32)cmd[2] << 24; | |
291 | ||
292 | *num = (u32)cmd[9] | (u32)cmd[8] << 8 | (u32)cmd[7] << 16 | | |
293 | (u32)cmd[6] << 24; | |
3de9f944 FT |
294 | break; |
295 | case WRITE_10: | |
296 | case READ_10: | |
c639d14e | 297 | case XDWRITEREAD_10: |
d5cdc989 FT |
298 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
299 | (u32)cmd[2] << 24; | |
300 | ||
301 | *num = (u32)cmd[8] | (u32)cmd[7] << 8; | |
3de9f944 FT |
302 | break; |
303 | case WRITE_6: | |
304 | case READ_6: | |
d5cdc989 FT |
305 | *lba = (u32)cmd[3] | (u32)cmd[2] << 8 | |
306 | (u32)(cmd[1] & 0x1f) << 16; | |
3de9f944 FT |
307 | *num = (0 == cmd[4]) ? 256 : cmd[4]; |
308 | break; | |
309 | default: | |
310 | break; | |
311 | } | |
312 | } | |
1da177e4 | 313 | |
1da177e4 LT |
314 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
315 | { | |
316 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
317 | printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); | |
318 | } | |
319 | return -EINVAL; | |
320 | /* return -ENOTTY; // correct return but upsets fdisk */ | |
321 | } | |
322 | ||
c65b1445 DG |
323 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
324 | struct sdebug_dev_info * devip) | |
1da177e4 LT |
325 | { |
326 | if (devip->reset) { | |
327 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
328 | printk(KERN_INFO "scsi_debug: Reporting Unit " | |
329 | "attention: power on reset\n"); | |
330 | devip->reset = 0; | |
331 | mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); | |
332 | return check_condition_result; | |
333 | } | |
c65b1445 DG |
334 | if ((0 == reset_only) && devip->stopped) { |
335 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
336 | printk(KERN_INFO "scsi_debug: Reporting Not " | |
337 | "ready: initializing command required\n"); | |
338 | mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, | |
339 | 0x2); | |
340 | return check_condition_result; | |
341 | } | |
1da177e4 LT |
342 | return 0; |
343 | } | |
344 | ||
345 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ | |
21a61829 | 346 | static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
1da177e4 LT |
347 | int arr_len) |
348 | { | |
21a61829 | 349 | int act_len; |
072d0bb3 | 350 | struct scsi_data_buffer *sdb = scsi_in(scp); |
1da177e4 | 351 | |
072d0bb3 | 352 | if (!sdb->length) |
1da177e4 | 353 | return 0; |
072d0bb3 | 354 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
1da177e4 | 355 | return (DID_ERROR << 16); |
21a61829 FT |
356 | |
357 | act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, | |
358 | arr, arr_len); | |
072d0bb3 FT |
359 | if (sdb->resid) |
360 | sdb->resid -= act_len; | |
c65b1445 | 361 | else |
21a61829 FT |
362 | sdb->resid = scsi_bufflen(scp) - act_len; |
363 | ||
1da177e4 LT |
364 | return 0; |
365 | } | |
366 | ||
367 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ | |
21a61829 FT |
368 | static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
369 | int arr_len) | |
1da177e4 | 370 | { |
21a61829 | 371 | if (!scsi_bufflen(scp)) |
1da177e4 | 372 | return 0; |
072d0bb3 | 373 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
1da177e4 | 374 | return -1; |
21a61829 FT |
375 | |
376 | return scsi_sg_copy_to_buffer(scp, arr, arr_len); | |
1da177e4 LT |
377 | } |
378 | ||
379 | ||
380 | static const char * inq_vendor_id = "Linux "; | |
381 | static const char * inq_product_id = "scsi_debug "; | |
382 | static const char * inq_product_rev = "0004"; | |
383 | ||
5a09e398 HR |
384 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
385 | int target_dev_id, int dev_id_num, | |
386 | const char * dev_id_str, | |
c65b1445 | 387 | int dev_id_str_len) |
1da177e4 | 388 | { |
c65b1445 DG |
389 | int num, port_a; |
390 | char b[32]; | |
1da177e4 | 391 | |
c65b1445 | 392 | port_a = target_dev_id + 1; |
1da177e4 LT |
393 | /* T10 vendor identifier field format (faked) */ |
394 | arr[0] = 0x2; /* ASCII */ | |
395 | arr[1] = 0x1; | |
396 | arr[2] = 0x0; | |
397 | memcpy(&arr[4], inq_vendor_id, 8); | |
398 | memcpy(&arr[12], inq_product_id, 16); | |
399 | memcpy(&arr[28], dev_id_str, dev_id_str_len); | |
400 | num = 8 + 16 + dev_id_str_len; | |
401 | arr[3] = num; | |
402 | num += 4; | |
c65b1445 DG |
403 | if (dev_id_num >= 0) { |
404 | /* NAA-5, Logical unit identifier (binary) */ | |
405 | arr[num++] = 0x1; /* binary (not necessarily sas) */ | |
406 | arr[num++] = 0x3; /* PIV=0, lu, naa */ | |
407 | arr[num++] = 0x0; | |
408 | arr[num++] = 0x8; | |
409 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ | |
410 | arr[num++] = 0x33; | |
411 | arr[num++] = 0x33; | |
412 | arr[num++] = 0x30; | |
413 | arr[num++] = (dev_id_num >> 24); | |
414 | arr[num++] = (dev_id_num >> 16) & 0xff; | |
415 | arr[num++] = (dev_id_num >> 8) & 0xff; | |
416 | arr[num++] = dev_id_num & 0xff; | |
417 | /* Target relative port number */ | |
418 | arr[num++] = 0x61; /* proto=sas, binary */ | |
419 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ | |
420 | arr[num++] = 0x0; /* reserved */ | |
421 | arr[num++] = 0x4; /* length */ | |
422 | arr[num++] = 0x0; /* reserved */ | |
423 | arr[num++] = 0x0; /* reserved */ | |
424 | arr[num++] = 0x0; | |
425 | arr[num++] = 0x1; /* relative port A */ | |
426 | } | |
427 | /* NAA-5, Target port identifier */ | |
428 | arr[num++] = 0x61; /* proto=sas, binary */ | |
429 | arr[num++] = 0x93; /* piv=1, target port, naa */ | |
430 | arr[num++] = 0x0; | |
431 | arr[num++] = 0x8; | |
432 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
433 | arr[num++] = 0x22; | |
434 | arr[num++] = 0x22; | |
435 | arr[num++] = 0x20; | |
436 | arr[num++] = (port_a >> 24); | |
437 | arr[num++] = (port_a >> 16) & 0xff; | |
438 | arr[num++] = (port_a >> 8) & 0xff; | |
439 | arr[num++] = port_a & 0xff; | |
5a09e398 HR |
440 | /* NAA-5, Target port group identifier */ |
441 | arr[num++] = 0x61; /* proto=sas, binary */ | |
442 | arr[num++] = 0x95; /* piv=1, target port group id */ | |
443 | arr[num++] = 0x0; | |
444 | arr[num++] = 0x4; | |
445 | arr[num++] = 0; | |
446 | arr[num++] = 0; | |
447 | arr[num++] = (port_group_id >> 8) & 0xff; | |
448 | arr[num++] = port_group_id & 0xff; | |
c65b1445 DG |
449 | /* NAA-5, Target device identifier */ |
450 | arr[num++] = 0x61; /* proto=sas, binary */ | |
451 | arr[num++] = 0xa3; /* piv=1, target device, naa */ | |
452 | arr[num++] = 0x0; | |
453 | arr[num++] = 0x8; | |
454 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
455 | arr[num++] = 0x22; | |
456 | arr[num++] = 0x22; | |
457 | arr[num++] = 0x20; | |
458 | arr[num++] = (target_dev_id >> 24); | |
459 | arr[num++] = (target_dev_id >> 16) & 0xff; | |
460 | arr[num++] = (target_dev_id >> 8) & 0xff; | |
461 | arr[num++] = target_dev_id & 0xff; | |
462 | /* SCSI name string: Target device identifier */ | |
463 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ | |
464 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ | |
465 | arr[num++] = 0x0; | |
466 | arr[num++] = 24; | |
467 | memcpy(arr + num, "naa.52222220", 12); | |
468 | num += 12; | |
469 | snprintf(b, sizeof(b), "%08X", target_dev_id); | |
470 | memcpy(arr + num, b, 8); | |
471 | num += 8; | |
472 | memset(arr + num, 0, 4); | |
473 | num += 4; | |
474 | return num; | |
475 | } | |
476 | ||
477 | ||
478 | static unsigned char vpd84_data[] = { | |
479 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, | |
480 | 0x22,0x22,0x22,0x0,0xbb,0x1, | |
481 | 0x22,0x22,0x22,0x0,0xbb,0x2, | |
482 | }; | |
483 | ||
484 | static int inquiry_evpd_84(unsigned char * arr) | |
485 | { | |
486 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); | |
487 | return sizeof(vpd84_data); | |
488 | } | |
489 | ||
490 | static int inquiry_evpd_85(unsigned char * arr) | |
491 | { | |
492 | int num = 0; | |
493 | const char * na1 = "https://www.kernel.org/config"; | |
494 | const char * na2 = "http://www.kernel.org/log"; | |
495 | int plen, olen; | |
496 | ||
497 | arr[num++] = 0x1; /* lu, storage config */ | |
498 | arr[num++] = 0x0; /* reserved */ | |
499 | arr[num++] = 0x0; | |
500 | olen = strlen(na1); | |
501 | plen = olen + 1; | |
502 | if (plen % 4) | |
503 | plen = ((plen / 4) + 1) * 4; | |
504 | arr[num++] = plen; /* length, null termianted, padded */ | |
505 | memcpy(arr + num, na1, olen); | |
506 | memset(arr + num + olen, 0, plen - olen); | |
507 | num += plen; | |
508 | ||
509 | arr[num++] = 0x4; /* lu, logging */ | |
510 | arr[num++] = 0x0; /* reserved */ | |
511 | arr[num++] = 0x0; | |
512 | olen = strlen(na2); | |
513 | plen = olen + 1; | |
514 | if (plen % 4) | |
515 | plen = ((plen / 4) + 1) * 4; | |
516 | arr[num++] = plen; /* length, null terminated, padded */ | |
517 | memcpy(arr + num, na2, olen); | |
518 | memset(arr + num + olen, 0, plen - olen); | |
519 | num += plen; | |
520 | ||
521 | return num; | |
522 | } | |
523 | ||
524 | /* SCSI ports VPD page */ | |
525 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) | |
526 | { | |
527 | int num = 0; | |
528 | int port_a, port_b; | |
529 | ||
530 | port_a = target_dev_id + 1; | |
531 | port_b = port_a + 1; | |
532 | arr[num++] = 0x0; /* reserved */ | |
533 | arr[num++] = 0x0; /* reserved */ | |
534 | arr[num++] = 0x0; | |
535 | arr[num++] = 0x1; /* relative port 1 (primary) */ | |
536 | memset(arr + num, 0, 6); | |
537 | num += 6; | |
538 | arr[num++] = 0x0; | |
539 | arr[num++] = 12; /* length tp descriptor */ | |
540 | /* naa-5 target port identifier (A) */ | |
541 | arr[num++] = 0x61; /* proto=sas, binary */ | |
542 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
543 | arr[num++] = 0x0; /* reserved */ | |
544 | arr[num++] = 0x8; /* length */ | |
545 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
546 | arr[num++] = 0x22; | |
547 | arr[num++] = 0x22; | |
548 | arr[num++] = 0x20; | |
549 | arr[num++] = (port_a >> 24); | |
550 | arr[num++] = (port_a >> 16) & 0xff; | |
551 | arr[num++] = (port_a >> 8) & 0xff; | |
552 | arr[num++] = port_a & 0xff; | |
553 | ||
554 | arr[num++] = 0x0; /* reserved */ | |
555 | arr[num++] = 0x0; /* reserved */ | |
556 | arr[num++] = 0x0; | |
557 | arr[num++] = 0x2; /* relative port 2 (secondary) */ | |
558 | memset(arr + num, 0, 6); | |
559 | num += 6; | |
560 | arr[num++] = 0x0; | |
561 | arr[num++] = 12; /* length tp descriptor */ | |
562 | /* naa-5 target port identifier (B) */ | |
563 | arr[num++] = 0x61; /* proto=sas, binary */ | |
564 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
565 | arr[num++] = 0x0; /* reserved */ | |
566 | arr[num++] = 0x8; /* length */ | |
567 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
568 | arr[num++] = 0x22; | |
569 | arr[num++] = 0x22; | |
570 | arr[num++] = 0x20; | |
571 | arr[num++] = (port_b >> 24); | |
572 | arr[num++] = (port_b >> 16) & 0xff; | |
573 | arr[num++] = (port_b >> 8) & 0xff; | |
574 | arr[num++] = port_b & 0xff; | |
575 | ||
576 | return num; | |
577 | } | |
578 | ||
579 | ||
580 | static unsigned char vpd89_data[] = { | |
581 | /* from 4th byte */ 0,0,0,0, | |
582 | 'l','i','n','u','x',' ',' ',' ', | |
583 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', | |
584 | '1','2','3','4', | |
585 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, | |
586 | 0xec,0,0,0, | |
587 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, | |
588 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, | |
589 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, | |
590 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, | |
591 | 0x53,0x41, | |
592 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
593 | 0x20,0x20, | |
594 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
595 | 0x10,0x80, | |
596 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, | |
597 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, | |
598 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, | |
599 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, | |
600 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, | |
601 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, | |
602 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, | |
603 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
604 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
605 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
606 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, | |
607 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, | |
608 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, | |
609 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,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 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
619 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
620 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
621 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, | |
622 | }; | |
623 | ||
624 | static int inquiry_evpd_89(unsigned char * arr) | |
625 | { | |
626 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); | |
627 | return sizeof(vpd89_data); | |
628 | } | |
629 | ||
630 | ||
631 | static unsigned char vpdb0_data[] = { | |
632 | /* from 4th byte */ 0,0,0,4, | |
633 | 0,0,0x4,0, | |
634 | 0,0,0,64, | |
635 | }; | |
636 | ||
637 | static int inquiry_evpd_b0(unsigned char * arr) | |
638 | { | |
639 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); | |
640 | if (sdebug_store_sectors > 0x400) { | |
641 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; | |
642 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; | |
643 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; | |
644 | arr[7] = sdebug_store_sectors & 0xff; | |
645 | } | |
646 | return sizeof(vpdb0_data); | |
1da177e4 LT |
647 | } |
648 | ||
649 | ||
650 | #define SDEBUG_LONG_INQ_SZ 96 | |
c65b1445 | 651 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
1da177e4 LT |
652 | |
653 | static int resp_inquiry(struct scsi_cmnd * scp, int target, | |
654 | struct sdebug_dev_info * devip) | |
655 | { | |
656 | unsigned char pq_pdt; | |
5a09e398 | 657 | unsigned char * arr; |
1da177e4 | 658 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
5a09e398 | 659 | int alloc_len, n, ret; |
1da177e4 LT |
660 | |
661 | alloc_len = (cmd[3] << 8) + cmd[4]; | |
6f3cbf55 DG |
662 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
663 | if (! arr) | |
664 | return DID_REQUEUE << 16; | |
c65b1445 DG |
665 | if (devip->wlun) |
666 | pq_pdt = 0x1e; /* present, wlun */ | |
667 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) | |
668 | pq_pdt = 0x7f; /* not present, no device type */ | |
669 | else | |
670 | pq_pdt = (scsi_debug_ptype & 0x1f); | |
1da177e4 LT |
671 | arr[0] = pq_pdt; |
672 | if (0x2 & cmd[1]) { /* CMDDT bit set */ | |
673 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
674 | 0); | |
5a09e398 | 675 | kfree(arr); |
1da177e4 LT |
676 | return check_condition_result; |
677 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ | |
5a09e398 | 678 | int lu_id_num, port_group_id, target_dev_id, len; |
c65b1445 DG |
679 | char lu_id_str[6]; |
680 | int host_no = devip->sdbg_host->shost->host_no; | |
1da177e4 | 681 | |
5a09e398 HR |
682 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
683 | (devip->channel & 0x7f); | |
23183910 DG |
684 | if (0 == scsi_debug_vpd_use_hostno) |
685 | host_no = 0; | |
c65b1445 DG |
686 | lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
687 | (devip->target * 1000) + devip->lun); | |
688 | target_dev_id = ((host_no + 1) * 2000) + | |
689 | (devip->target * 1000) - 3; | |
690 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); | |
1da177e4 | 691 | if (0 == cmd[2]) { /* supported vital product data pages */ |
c65b1445 DG |
692 | arr[1] = cmd[2]; /*sanity */ |
693 | n = 4; | |
694 | arr[n++] = 0x0; /* this page */ | |
695 | arr[n++] = 0x80; /* unit serial number */ | |
696 | arr[n++] = 0x83; /* device identification */ | |
697 | arr[n++] = 0x84; /* software interface ident. */ | |
698 | arr[n++] = 0x85; /* management network addresses */ | |
699 | arr[n++] = 0x86; /* extended inquiry */ | |
700 | arr[n++] = 0x87; /* mode page policy */ | |
701 | arr[n++] = 0x88; /* SCSI ports */ | |
702 | arr[n++] = 0x89; /* ATA information */ | |
703 | arr[n++] = 0xb0; /* Block limits (SBC) */ | |
704 | arr[3] = n - 4; /* number of supported VPD pages */ | |
1da177e4 | 705 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
c65b1445 | 706 | arr[1] = cmd[2]; /*sanity */ |
1da177e4 | 707 | arr[3] = len; |
c65b1445 | 708 | memcpy(&arr[4], lu_id_str, len); |
1da177e4 | 709 | } else if (0x83 == cmd[2]) { /* device identification */ |
c65b1445 | 710 | arr[1] = cmd[2]; /*sanity */ |
5a09e398 HR |
711 | arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
712 | target_dev_id, lu_id_num, | |
713 | lu_id_str, len); | |
c65b1445 DG |
714 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
715 | arr[1] = cmd[2]; /*sanity */ | |
716 | arr[3] = inquiry_evpd_84(&arr[4]); | |
717 | } else if (0x85 == cmd[2]) { /* Management network addresses */ | |
718 | arr[1] = cmd[2]; /*sanity */ | |
719 | arr[3] = inquiry_evpd_85(&arr[4]); | |
720 | } else if (0x86 == cmd[2]) { /* extended inquiry */ | |
721 | arr[1] = cmd[2]; /*sanity */ | |
722 | arr[3] = 0x3c; /* number of following entries */ | |
723 | arr[4] = 0x0; /* no protection stuff */ | |
724 | arr[5] = 0x7; /* head of q, ordered + simple q's */ | |
725 | } else if (0x87 == cmd[2]) { /* mode page policy */ | |
726 | arr[1] = cmd[2]; /*sanity */ | |
727 | arr[3] = 0x8; /* number of following entries */ | |
728 | arr[4] = 0x2; /* disconnect-reconnect mp */ | |
729 | arr[6] = 0x80; /* mlus, shared */ | |
730 | arr[8] = 0x18; /* protocol specific lu */ | |
731 | arr[10] = 0x82; /* mlus, per initiator port */ | |
732 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ | |
733 | arr[1] = cmd[2]; /*sanity */ | |
734 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); | |
735 | } else if (0x89 == cmd[2]) { /* ATA information */ | |
736 | arr[1] = cmd[2]; /*sanity */ | |
737 | n = inquiry_evpd_89(&arr[4]); | |
738 | arr[2] = (n >> 8); | |
739 | arr[3] = (n & 0xff); | |
740 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ | |
741 | arr[1] = cmd[2]; /*sanity */ | |
742 | arr[3] = inquiry_evpd_b0(&arr[4]); | |
1da177e4 LT |
743 | } else { |
744 | /* Illegal request, invalid field in cdb */ | |
745 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
746 | INVALID_FIELD_IN_CDB, 0); | |
5a09e398 | 747 | kfree(arr); |
1da177e4 LT |
748 | return check_condition_result; |
749 | } | |
c65b1445 | 750 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
5a09e398 | 751 | ret = fill_from_dev_buffer(scp, arr, |
c65b1445 | 752 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
5a09e398 HR |
753 | kfree(arr); |
754 | return ret; | |
1da177e4 LT |
755 | } |
756 | /* drops through here for a standard inquiry */ | |
757 | arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */ | |
758 | arr[2] = scsi_debug_scsi_level; | |
759 | arr[3] = 2; /* response_data_format==2 */ | |
760 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; | |
5a09e398 HR |
761 | if (0 == scsi_debug_vpd_use_hostno) |
762 | arr[5] = 0x10; /* claim: implicit TGPS */ | |
c65b1445 | 763 | arr[6] = 0x10; /* claim: MultiP */ |
1da177e4 | 764 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
c65b1445 | 765 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
1da177e4 LT |
766 | memcpy(&arr[8], inq_vendor_id, 8); |
767 | memcpy(&arr[16], inq_product_id, 16); | |
768 | memcpy(&arr[32], inq_product_rev, 4); | |
769 | /* version descriptors (2 bytes each) follow */ | |
c65b1445 DG |
770 | arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ |
771 | arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ | |
772 | n = 62; | |
1da177e4 | 773 | if (scsi_debug_ptype == 0) { |
c65b1445 | 774 | arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ |
1da177e4 | 775 | } else if (scsi_debug_ptype == 1) { |
c65b1445 | 776 | arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ |
1da177e4 | 777 | } |
c65b1445 | 778 | arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ |
5a09e398 | 779 | ret = fill_from_dev_buffer(scp, arr, |
1da177e4 | 780 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
5a09e398 HR |
781 | kfree(arr); |
782 | return ret; | |
1da177e4 LT |
783 | } |
784 | ||
785 | static int resp_requests(struct scsi_cmnd * scp, | |
786 | struct sdebug_dev_info * devip) | |
787 | { | |
788 | unsigned char * sbuff; | |
789 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
790 | unsigned char arr[SDEBUG_SENSE_LEN]; | |
c65b1445 | 791 | int want_dsense; |
1da177e4 LT |
792 | int len = 18; |
793 | ||
c65b1445 | 794 | memset(arr, 0, sizeof(arr)); |
1da177e4 | 795 | if (devip->reset == 1) |
c65b1445 DG |
796 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
797 | want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; | |
1da177e4 | 798 | sbuff = devip->sense_buff; |
c65b1445 DG |
799 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
800 | if (want_dsense) { | |
801 | arr[0] = 0x72; | |
802 | arr[1] = 0x0; /* NO_SENSE in sense_key */ | |
803 | arr[2] = THRESHOLD_EXCEEDED; | |
804 | arr[3] = 0xff; /* TEST set and MRIE==6 */ | |
805 | } else { | |
806 | arr[0] = 0x70; | |
807 | arr[2] = 0x0; /* NO_SENSE in sense_key */ | |
808 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
809 | arr[12] = THRESHOLD_EXCEEDED; | |
810 | arr[13] = 0xff; /* TEST set and MRIE==6 */ | |
811 | } | |
c65b1445 | 812 | } else { |
1da177e4 | 813 | memcpy(arr, sbuff, SDEBUG_SENSE_LEN); |
c65b1445 DG |
814 | if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
815 | /* DESC bit set and sense_buff in fixed format */ | |
816 | memset(arr, 0, sizeof(arr)); | |
817 | arr[0] = 0x72; | |
818 | arr[1] = sbuff[2]; /* sense key */ | |
819 | arr[2] = sbuff[12]; /* asc */ | |
820 | arr[3] = sbuff[13]; /* ascq */ | |
821 | len = 8; | |
822 | } | |
823 | } | |
824 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); | |
1da177e4 LT |
825 | return fill_from_dev_buffer(scp, arr, len); |
826 | } | |
827 | ||
c65b1445 DG |
828 | static int resp_start_stop(struct scsi_cmnd * scp, |
829 | struct sdebug_dev_info * devip) | |
830 | { | |
831 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
832 | int power_cond, errsts, start; | |
833 | ||
834 | if ((errsts = check_readiness(scp, 1, devip))) | |
835 | return errsts; | |
836 | power_cond = (cmd[4] & 0xf0) >> 4; | |
837 | if (power_cond) { | |
838 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
839 | 0); | |
840 | return check_condition_result; | |
841 | } | |
842 | start = cmd[4] & 1; | |
843 | if (start == devip->stopped) | |
844 | devip->stopped = !start; | |
845 | return 0; | |
846 | } | |
847 | ||
28898873 FT |
848 | static sector_t get_sdebug_capacity(void) |
849 | { | |
850 | if (scsi_debug_virtual_gb > 0) | |
851 | return 2048 * 1024 * scsi_debug_virtual_gb; | |
852 | else | |
853 | return sdebug_store_sectors; | |
854 | } | |
855 | ||
1da177e4 LT |
856 | #define SDEBUG_READCAP_ARR_SZ 8 |
857 | static int resp_readcap(struct scsi_cmnd * scp, | |
858 | struct sdebug_dev_info * devip) | |
859 | { | |
860 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; | |
c65b1445 | 861 | unsigned int capac; |
1da177e4 LT |
862 | int errsts; |
863 | ||
c65b1445 | 864 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 | 865 | return errsts; |
c65b1445 | 866 | /* following just in case virtual_gb changed */ |
28898873 | 867 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 | 868 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
c65b1445 DG |
869 | if (sdebug_capacity < 0xffffffff) { |
870 | capac = (unsigned int)sdebug_capacity - 1; | |
871 | arr[0] = (capac >> 24); | |
872 | arr[1] = (capac >> 16) & 0xff; | |
873 | arr[2] = (capac >> 8) & 0xff; | |
874 | arr[3] = capac & 0xff; | |
875 | } else { | |
876 | arr[0] = 0xff; | |
877 | arr[1] = 0xff; | |
878 | arr[2] = 0xff; | |
879 | arr[3] = 0xff; | |
880 | } | |
1da177e4 LT |
881 | arr[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
882 | arr[7] = SECT_SIZE_PER(target) & 0xff; | |
883 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); | |
884 | } | |
885 | ||
c65b1445 DG |
886 | #define SDEBUG_READCAP16_ARR_SZ 32 |
887 | static int resp_readcap16(struct scsi_cmnd * scp, | |
888 | struct sdebug_dev_info * devip) | |
889 | { | |
890 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
891 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; | |
892 | unsigned long long capac; | |
893 | int errsts, k, alloc_len; | |
894 | ||
895 | if ((errsts = check_readiness(scp, 1, devip))) | |
896 | return errsts; | |
897 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) | |
898 | + cmd[13]); | |
899 | /* following just in case virtual_gb changed */ | |
28898873 | 900 | sdebug_capacity = get_sdebug_capacity(); |
c65b1445 DG |
901 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
902 | capac = sdebug_capacity - 1; | |
903 | for (k = 0; k < 8; ++k, capac >>= 8) | |
904 | arr[7 - k] = capac & 0xff; | |
905 | arr[8] = (SECT_SIZE_PER(target) >> 24) & 0xff; | |
906 | arr[9] = (SECT_SIZE_PER(target) >> 16) & 0xff; | |
907 | arr[10] = (SECT_SIZE_PER(target) >> 8) & 0xff; | |
908 | arr[11] = SECT_SIZE_PER(target) & 0xff; | |
909 | return fill_from_dev_buffer(scp, arr, | |
910 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); | |
911 | } | |
912 | ||
5a09e398 HR |
913 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
914 | ||
915 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, | |
916 | struct sdebug_dev_info * devip) | |
917 | { | |
918 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
919 | unsigned char * arr; | |
920 | int host_no = devip->sdbg_host->shost->host_no; | |
921 | int n, ret, alen, rlen; | |
922 | int port_group_a, port_group_b, port_a, port_b; | |
923 | ||
924 | alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) | |
925 | + cmd[9]); | |
926 | ||
6f3cbf55 DG |
927 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
928 | if (! arr) | |
929 | return DID_REQUEUE << 16; | |
5a09e398 HR |
930 | /* |
931 | * EVPD page 0x88 states we have two ports, one | |
932 | * real and a fake port with no device connected. | |
933 | * So we create two port groups with one port each | |
934 | * and set the group with port B to unavailable. | |
935 | */ | |
936 | port_a = 0x1; /* relative port A */ | |
937 | port_b = 0x2; /* relative port B */ | |
938 | port_group_a = (((host_no + 1) & 0x7f) << 8) + | |
939 | (devip->channel & 0x7f); | |
940 | port_group_b = (((host_no + 1) & 0x7f) << 8) + | |
941 | (devip->channel & 0x7f) + 0x80; | |
942 | ||
943 | /* | |
944 | * The asymmetric access state is cycled according to the host_id. | |
945 | */ | |
946 | n = 4; | |
947 | if (0 == scsi_debug_vpd_use_hostno) { | |
948 | arr[n++] = host_no % 3; /* Asymm access state */ | |
949 | arr[n++] = 0x0F; /* claim: all states are supported */ | |
950 | } else { | |
951 | arr[n++] = 0x0; /* Active/Optimized path */ | |
952 | arr[n++] = 0x01; /* claim: only support active/optimized paths */ | |
953 | } | |
954 | arr[n++] = (port_group_a >> 8) & 0xff; | |
955 | arr[n++] = port_group_a & 0xff; | |
956 | arr[n++] = 0; /* Reserved */ | |
957 | arr[n++] = 0; /* Status code */ | |
958 | arr[n++] = 0; /* Vendor unique */ | |
959 | arr[n++] = 0x1; /* One port per group */ | |
960 | arr[n++] = 0; /* Reserved */ | |
961 | arr[n++] = 0; /* Reserved */ | |
962 | arr[n++] = (port_a >> 8) & 0xff; | |
963 | arr[n++] = port_a & 0xff; | |
964 | arr[n++] = 3; /* Port unavailable */ | |
965 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ | |
966 | arr[n++] = (port_group_b >> 8) & 0xff; | |
967 | arr[n++] = port_group_b & 0xff; | |
968 | arr[n++] = 0; /* Reserved */ | |
969 | arr[n++] = 0; /* Status code */ | |
970 | arr[n++] = 0; /* Vendor unique */ | |
971 | arr[n++] = 0x1; /* One port per group */ | |
972 | arr[n++] = 0; /* Reserved */ | |
973 | arr[n++] = 0; /* Reserved */ | |
974 | arr[n++] = (port_b >> 8) & 0xff; | |
975 | arr[n++] = port_b & 0xff; | |
976 | ||
977 | rlen = n - 4; | |
978 | arr[0] = (rlen >> 24) & 0xff; | |
979 | arr[1] = (rlen >> 16) & 0xff; | |
980 | arr[2] = (rlen >> 8) & 0xff; | |
981 | arr[3] = rlen & 0xff; | |
982 | ||
983 | /* | |
984 | * Return the smallest value of either | |
985 | * - The allocated length | |
986 | * - The constructed command length | |
987 | * - The maximum array size | |
988 | */ | |
989 | rlen = min(alen,n); | |
990 | ret = fill_from_dev_buffer(scp, arr, | |
991 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); | |
992 | kfree(arr); | |
993 | return ret; | |
994 | } | |
995 | ||
1da177e4 LT |
996 | /* <<Following mode page info copied from ST318451LW>> */ |
997 | ||
998 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) | |
999 | { /* Read-Write Error Recovery page for mode_sense */ | |
1000 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, | |
1001 | 5, 0, 0xff, 0xff}; | |
1002 | ||
1003 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); | |
1004 | if (1 == pcontrol) | |
1005 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); | |
1006 | return sizeof(err_recov_pg); | |
1007 | } | |
1008 | ||
1009 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) | |
1010 | { /* Disconnect-Reconnect page for mode_sense */ | |
1011 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, | |
1012 | 0, 0, 0, 0, 0, 0, 0, 0}; | |
1013 | ||
1014 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); | |
1015 | if (1 == pcontrol) | |
1016 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); | |
1017 | return sizeof(disconnect_pg); | |
1018 | } | |
1019 | ||
1020 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) | |
1021 | { /* Format device page for mode_sense */ | |
1022 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, | |
1023 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1024 | 0, 0, 0, 0, 0x40, 0, 0, 0}; | |
1025 | ||
1026 | memcpy(p, format_pg, sizeof(format_pg)); | |
1027 | p[10] = (sdebug_sectors_per >> 8) & 0xff; | |
1028 | p[11] = sdebug_sectors_per & 0xff; | |
1029 | p[12] = (SECT_SIZE >> 8) & 0xff; | |
1030 | p[13] = SECT_SIZE & 0xff; | |
1031 | if (DEV_REMOVEABLE(target)) | |
1032 | p[20] |= 0x20; /* should agree with INQUIRY */ | |
1033 | if (1 == pcontrol) | |
1034 | memset(p + 2, 0, sizeof(format_pg) - 2); | |
1035 | return sizeof(format_pg); | |
1036 | } | |
1037 | ||
1038 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) | |
1039 | { /* Caching page for mode_sense */ | |
1040 | unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
1041 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; | |
1042 | ||
1043 | memcpy(p, caching_pg, sizeof(caching_pg)); | |
1044 | if (1 == pcontrol) | |
1045 | memset(p + 2, 0, sizeof(caching_pg) - 2); | |
1046 | return sizeof(caching_pg); | |
1047 | } | |
1048 | ||
1049 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) | |
1050 | { /* Control mode page for mode_sense */ | |
c65b1445 DG |
1051 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
1052 | 0, 0, 0, 0}; | |
1053 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, | |
1da177e4 LT |
1054 | 0, 0, 0x2, 0x4b}; |
1055 | ||
1056 | if (scsi_debug_dsense) | |
1057 | ctrl_m_pg[2] |= 0x4; | |
c65b1445 DG |
1058 | else |
1059 | ctrl_m_pg[2] &= ~0x4; | |
1da177e4 LT |
1060 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
1061 | if (1 == pcontrol) | |
c65b1445 DG |
1062 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
1063 | else if (2 == pcontrol) | |
1064 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); | |
1da177e4 LT |
1065 | return sizeof(ctrl_m_pg); |
1066 | } | |
1067 | ||
c65b1445 | 1068 | |
1da177e4 LT |
1069 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
1070 | { /* Informational Exceptions control mode page for mode_sense */ | |
c65b1445 DG |
1071 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
1072 | 0, 0, 0x0, 0x0}; | |
1073 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
1074 | 0, 0, 0x0, 0x0}; | |
1075 | ||
1da177e4 LT |
1076 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
1077 | if (1 == pcontrol) | |
c65b1445 DG |
1078 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
1079 | else if (2 == pcontrol) | |
1080 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); | |
1da177e4 LT |
1081 | return sizeof(iec_m_pg); |
1082 | } | |
1083 | ||
c65b1445 DG |
1084 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
1085 | { /* SAS SSP mode page - short format for mode_sense */ | |
1086 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, | |
1087 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; | |
1088 | ||
1089 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); | |
1090 | if (1 == pcontrol) | |
1091 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); | |
1092 | return sizeof(sas_sf_m_pg); | |
1093 | } | |
1094 | ||
1095 | ||
1096 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, | |
1097 | int target_dev_id) | |
1098 | { /* SAS phy control and discover mode page for mode_sense */ | |
1099 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, | |
1100 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1101 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1102 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1103 | 0x2, 0, 0, 0, 0, 0, 0, 0, | |
1104 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1105 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1106 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1107 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1108 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1109 | 0x3, 0, 0, 0, 0, 0, 0, 0, | |
1110 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1111 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1112 | }; | |
1113 | int port_a, port_b; | |
1114 | ||
1115 | port_a = target_dev_id + 1; | |
1116 | port_b = port_a + 1; | |
1117 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); | |
1118 | p[20] = (port_a >> 24); | |
1119 | p[21] = (port_a >> 16) & 0xff; | |
1120 | p[22] = (port_a >> 8) & 0xff; | |
1121 | p[23] = port_a & 0xff; | |
1122 | p[48 + 20] = (port_b >> 24); | |
1123 | p[48 + 21] = (port_b >> 16) & 0xff; | |
1124 | p[48 + 22] = (port_b >> 8) & 0xff; | |
1125 | p[48 + 23] = port_b & 0xff; | |
1126 | if (1 == pcontrol) | |
1127 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); | |
1128 | return sizeof(sas_pcd_m_pg); | |
1129 | } | |
1130 | ||
1131 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) | |
1132 | { /* SAS SSP shared protocol specific port mode subpage */ | |
1133 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, | |
1134 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1135 | }; | |
1136 | ||
1137 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); | |
1138 | if (1 == pcontrol) | |
1139 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); | |
1140 | return sizeof(sas_sha_m_pg); | |
1141 | } | |
1142 | ||
1da177e4 LT |
1143 | #define SDEBUG_MAX_MSENSE_SZ 256 |
1144 | ||
1145 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, | |
1146 | struct sdebug_dev_info * devip) | |
1147 | { | |
23183910 DG |
1148 | unsigned char dbd, llbaa; |
1149 | int pcontrol, pcode, subpcode, bd_len; | |
1da177e4 | 1150 | unsigned char dev_spec; |
23183910 | 1151 | int k, alloc_len, msense_6, offset, len, errsts, target_dev_id; |
1da177e4 LT |
1152 | unsigned char * ap; |
1153 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; | |
1154 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1155 | ||
c65b1445 | 1156 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 | 1157 | return errsts; |
23183910 | 1158 | dbd = !!(cmd[1] & 0x8); |
1da177e4 LT |
1159 | pcontrol = (cmd[2] & 0xc0) >> 6; |
1160 | pcode = cmd[2] & 0x3f; | |
1161 | subpcode = cmd[3]; | |
1162 | msense_6 = (MODE_SENSE == cmd[0]); | |
23183910 DG |
1163 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
1164 | if ((0 == scsi_debug_ptype) && (0 == dbd)) | |
1165 | bd_len = llbaa ? 16 : 8; | |
1166 | else | |
1167 | bd_len = 0; | |
1da177e4 LT |
1168 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
1169 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); | |
1170 | if (0x3 == pcontrol) { /* Saving values not supported */ | |
1171 | mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, | |
1172 | 0); | |
1173 | return check_condition_result; | |
1174 | } | |
c65b1445 DG |
1175 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
1176 | (devip->target * 1000) - 3; | |
23183910 DG |
1177 | /* set DPOFUA bit for disks */ |
1178 | if (0 == scsi_debug_ptype) | |
1179 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; | |
1180 | else | |
1181 | dev_spec = 0x0; | |
1da177e4 LT |
1182 | if (msense_6) { |
1183 | arr[2] = dev_spec; | |
23183910 | 1184 | arr[3] = bd_len; |
1da177e4 LT |
1185 | offset = 4; |
1186 | } else { | |
1187 | arr[3] = dev_spec; | |
23183910 DG |
1188 | if (16 == bd_len) |
1189 | arr[4] = 0x1; /* set LONGLBA bit */ | |
1190 | arr[7] = bd_len; /* assume 255 or less */ | |
1da177e4 LT |
1191 | offset = 8; |
1192 | } | |
1193 | ap = arr + offset; | |
28898873 FT |
1194 | if ((bd_len > 0) && (!sdebug_capacity)) |
1195 | sdebug_capacity = get_sdebug_capacity(); | |
1196 | ||
23183910 DG |
1197 | if (8 == bd_len) { |
1198 | if (sdebug_capacity > 0xfffffffe) { | |
1199 | ap[0] = 0xff; | |
1200 | ap[1] = 0xff; | |
1201 | ap[2] = 0xff; | |
1202 | ap[3] = 0xff; | |
1203 | } else { | |
1204 | ap[0] = (sdebug_capacity >> 24) & 0xff; | |
1205 | ap[1] = (sdebug_capacity >> 16) & 0xff; | |
1206 | ap[2] = (sdebug_capacity >> 8) & 0xff; | |
1207 | ap[3] = sdebug_capacity & 0xff; | |
1208 | } | |
1209 | ap[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; | |
1210 | ap[7] = SECT_SIZE_PER(target) & 0xff; | |
1211 | offset += bd_len; | |
1212 | ap = arr + offset; | |
1213 | } else if (16 == bd_len) { | |
1214 | unsigned long long capac = sdebug_capacity; | |
1215 | ||
1216 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1217 | ap[7 - k] = capac & 0xff; | |
1218 | ap[12] = (SECT_SIZE_PER(target) >> 24) & 0xff; | |
1219 | ap[13] = (SECT_SIZE_PER(target) >> 16) & 0xff; | |
1220 | ap[14] = (SECT_SIZE_PER(target) >> 8) & 0xff; | |
1221 | ap[15] = SECT_SIZE_PER(target) & 0xff; | |
1222 | offset += bd_len; | |
1223 | ap = arr + offset; | |
1224 | } | |
1da177e4 | 1225 | |
c65b1445 DG |
1226 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
1227 | /* TODO: Control Extension page */ | |
1da177e4 LT |
1228 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1229 | 0); | |
1230 | return check_condition_result; | |
1231 | } | |
1232 | switch (pcode) { | |
1233 | case 0x1: /* Read-Write error recovery page, direct access */ | |
1234 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1235 | offset += len; | |
1236 | break; | |
1237 | case 0x2: /* Disconnect-Reconnect page, all devices */ | |
1238 | len = resp_disconnect_pg(ap, pcontrol, target); | |
1239 | offset += len; | |
1240 | break; | |
1241 | case 0x3: /* Format device page, direct access */ | |
1242 | len = resp_format_pg(ap, pcontrol, target); | |
1243 | offset += len; | |
1244 | break; | |
1245 | case 0x8: /* Caching page, direct access */ | |
1246 | len = resp_caching_pg(ap, pcontrol, target); | |
1247 | offset += len; | |
1248 | break; | |
1249 | case 0xa: /* Control Mode page, all devices */ | |
1250 | len = resp_ctrl_m_pg(ap, pcontrol, target); | |
1251 | offset += len; | |
1252 | break; | |
c65b1445 DG |
1253 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
1254 | if ((subpcode > 0x2) && (subpcode < 0xff)) { | |
1255 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1256 | INVALID_FIELD_IN_CDB, 0); | |
1257 | return check_condition_result; | |
1258 | } | |
1259 | len = 0; | |
1260 | if ((0x0 == subpcode) || (0xff == subpcode)) | |
1261 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1262 | if ((0x1 == subpcode) || (0xff == subpcode)) | |
1263 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, | |
1264 | target_dev_id); | |
1265 | if ((0x2 == subpcode) || (0xff == subpcode)) | |
1266 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1267 | offset += len; | |
1268 | break; | |
1da177e4 LT |
1269 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
1270 | len = resp_iec_m_pg(ap, pcontrol, target); | |
1271 | offset += len; | |
1272 | break; | |
1273 | case 0x3f: /* Read all Mode pages */ | |
c65b1445 DG |
1274 | if ((0 == subpcode) || (0xff == subpcode)) { |
1275 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1276 | len += resp_disconnect_pg(ap + len, pcontrol, target); | |
1277 | len += resp_format_pg(ap + len, pcontrol, target); | |
1278 | len += resp_caching_pg(ap + len, pcontrol, target); | |
1279 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); | |
1280 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1281 | if (0xff == subpcode) { | |
1282 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, | |
1283 | target, target_dev_id); | |
1284 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1285 | } | |
1286 | len += resp_iec_m_pg(ap + len, pcontrol, target); | |
1287 | } else { | |
1288 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1289 | INVALID_FIELD_IN_CDB, 0); | |
1290 | return check_condition_result; | |
1291 | } | |
1da177e4 LT |
1292 | offset += len; |
1293 | break; | |
1294 | default: | |
1295 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1296 | 0); | |
1297 | return check_condition_result; | |
1298 | } | |
1299 | if (msense_6) | |
1300 | arr[0] = offset - 1; | |
1301 | else { | |
1302 | arr[0] = ((offset - 2) >> 8) & 0xff; | |
1303 | arr[1] = (offset - 2) & 0xff; | |
1304 | } | |
1305 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); | |
1306 | } | |
1307 | ||
c65b1445 DG |
1308 | #define SDEBUG_MAX_MSELECT_SZ 512 |
1309 | ||
1310 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, | |
1311 | struct sdebug_dev_info * devip) | |
1312 | { | |
1313 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; | |
1314 | int param_len, res, errsts, mpage; | |
1315 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; | |
1316 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1317 | ||
1318 | if ((errsts = check_readiness(scp, 1, devip))) | |
1319 | return errsts; | |
1320 | memset(arr, 0, sizeof(arr)); | |
1321 | pf = cmd[1] & 0x10; | |
1322 | sp = cmd[1] & 0x1; | |
1323 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); | |
1324 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { | |
1325 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1326 | INVALID_FIELD_IN_CDB, 0); | |
1327 | return check_condition_result; | |
1328 | } | |
1329 | res = fetch_to_dev_buffer(scp, arr, param_len); | |
1330 | if (-1 == res) | |
1331 | return (DID_ERROR << 16); | |
1332 | else if ((res < param_len) && | |
1333 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
1334 | printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " | |
1335 | " IO sent=%d bytes\n", param_len, res); | |
1336 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); | |
1337 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); | |
23183910 | 1338 | if (md_len > 2) { |
c65b1445 DG |
1339 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
1340 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1341 | return check_condition_result; | |
1342 | } | |
1343 | off = bd_len + (mselect6 ? 4 : 8); | |
1344 | mpage = arr[off] & 0x3f; | |
1345 | ps = !!(arr[off] & 0x80); | |
1346 | if (ps) { | |
1347 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1348 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1349 | return check_condition_result; | |
1350 | } | |
1351 | spf = !!(arr[off] & 0x40); | |
1352 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : | |
1353 | (arr[off + 1] + 2); | |
1354 | if ((pg_len + off) > param_len) { | |
1355 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1356 | PARAMETER_LIST_LENGTH_ERR, 0); | |
1357 | return check_condition_result; | |
1358 | } | |
1359 | switch (mpage) { | |
1360 | case 0xa: /* Control Mode page */ | |
1361 | if (ctrl_m_pg[1] == arr[off + 1]) { | |
1362 | memcpy(ctrl_m_pg + 2, arr + off + 2, | |
1363 | sizeof(ctrl_m_pg) - 2); | |
1364 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); | |
1365 | return 0; | |
1366 | } | |
1367 | break; | |
1368 | case 0x1c: /* Informational Exceptions Mode page */ | |
1369 | if (iec_m_pg[1] == arr[off + 1]) { | |
1370 | memcpy(iec_m_pg + 2, arr + off + 2, | |
1371 | sizeof(iec_m_pg) - 2); | |
1372 | return 0; | |
1373 | } | |
1374 | break; | |
1375 | default: | |
1376 | break; | |
1377 | } | |
1378 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1379 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1380 | return check_condition_result; | |
1381 | } | |
1382 | ||
1383 | static int resp_temp_l_pg(unsigned char * arr) | |
1384 | { | |
1385 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, | |
1386 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, | |
1387 | }; | |
1388 | ||
1389 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); | |
1390 | return sizeof(temp_l_pg); | |
1391 | } | |
1392 | ||
1393 | static int resp_ie_l_pg(unsigned char * arr) | |
1394 | { | |
1395 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, | |
1396 | }; | |
1397 | ||
1398 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); | |
1399 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ | |
1400 | arr[4] = THRESHOLD_EXCEEDED; | |
1401 | arr[5] = 0xff; | |
1402 | } | |
1403 | return sizeof(ie_l_pg); | |
1404 | } | |
1405 | ||
1406 | #define SDEBUG_MAX_LSENSE_SZ 512 | |
1407 | ||
1408 | static int resp_log_sense(struct scsi_cmnd * scp, | |
1409 | struct sdebug_dev_info * devip) | |
1410 | { | |
23183910 | 1411 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n; |
c65b1445 DG |
1412 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
1413 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1414 | ||
1415 | if ((errsts = check_readiness(scp, 1, devip))) | |
1416 | return errsts; | |
1417 | memset(arr, 0, sizeof(arr)); | |
1418 | ppc = cmd[1] & 0x2; | |
1419 | sp = cmd[1] & 0x1; | |
1420 | if (ppc || sp) { | |
1421 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1422 | INVALID_FIELD_IN_CDB, 0); | |
1423 | return check_condition_result; | |
1424 | } | |
1425 | pcontrol = (cmd[2] & 0xc0) >> 6; | |
1426 | pcode = cmd[2] & 0x3f; | |
23183910 | 1427 | subpcode = cmd[3] & 0xff; |
c65b1445 DG |
1428 | alloc_len = (cmd[7] << 8) + cmd[8]; |
1429 | arr[0] = pcode; | |
23183910 DG |
1430 | if (0 == subpcode) { |
1431 | switch (pcode) { | |
1432 | case 0x0: /* Supported log pages log page */ | |
1433 | n = 4; | |
1434 | arr[n++] = 0x0; /* this page */ | |
1435 | arr[n++] = 0xd; /* Temperature */ | |
1436 | arr[n++] = 0x2f; /* Informational exceptions */ | |
1437 | arr[3] = n - 4; | |
1438 | break; | |
1439 | case 0xd: /* Temperature log page */ | |
1440 | arr[3] = resp_temp_l_pg(arr + 4); | |
1441 | break; | |
1442 | case 0x2f: /* Informational exceptions log page */ | |
1443 | arr[3] = resp_ie_l_pg(arr + 4); | |
1444 | break; | |
1445 | default: | |
1446 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1447 | INVALID_FIELD_IN_CDB, 0); | |
1448 | return check_condition_result; | |
1449 | } | |
1450 | } else if (0xff == subpcode) { | |
1451 | arr[0] |= 0x40; | |
1452 | arr[1] = subpcode; | |
1453 | switch (pcode) { | |
1454 | case 0x0: /* Supported log pages and subpages log page */ | |
1455 | n = 4; | |
1456 | arr[n++] = 0x0; | |
1457 | arr[n++] = 0x0; /* 0,0 page */ | |
1458 | arr[n++] = 0x0; | |
1459 | arr[n++] = 0xff; /* this page */ | |
1460 | arr[n++] = 0xd; | |
1461 | arr[n++] = 0x0; /* Temperature */ | |
1462 | arr[n++] = 0x2f; | |
1463 | arr[n++] = 0x0; /* Informational exceptions */ | |
1464 | arr[3] = n - 4; | |
1465 | break; | |
1466 | case 0xd: /* Temperature subpages */ | |
1467 | n = 4; | |
1468 | arr[n++] = 0xd; | |
1469 | arr[n++] = 0x0; /* Temperature */ | |
1470 | arr[3] = n - 4; | |
1471 | break; | |
1472 | case 0x2f: /* Informational exceptions subpages */ | |
1473 | n = 4; | |
1474 | arr[n++] = 0x2f; | |
1475 | arr[n++] = 0x0; /* Informational exceptions */ | |
1476 | arr[3] = n - 4; | |
1477 | break; | |
1478 | default: | |
1479 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1480 | INVALID_FIELD_IN_CDB, 0); | |
1481 | return check_condition_result; | |
1482 | } | |
1483 | } else { | |
c65b1445 DG |
1484 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
1485 | INVALID_FIELD_IN_CDB, 0); | |
1486 | return check_condition_result; | |
1487 | } | |
1488 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); | |
1489 | return fill_from_dev_buffer(scp, arr, | |
1490 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); | |
1491 | } | |
1492 | ||
19789100 FT |
1493 | static int check_device_access_params(struct sdebug_dev_info *devi, |
1494 | unsigned long long lba, unsigned int num) | |
1da177e4 | 1495 | { |
c65b1445 | 1496 | if (lba + num > sdebug_capacity) { |
19789100 | 1497 | mk_sense_buffer(devi, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, 0); |
1da177e4 LT |
1498 | return check_condition_result; |
1499 | } | |
c65b1445 DG |
1500 | /* transfer length excessive (tie in to block limits VPD page) */ |
1501 | if (num > sdebug_store_sectors) { | |
19789100 | 1502 | mk_sense_buffer(devi, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
c65b1445 DG |
1503 | return check_condition_result; |
1504 | } | |
19789100 FT |
1505 | return 0; |
1506 | } | |
1507 | ||
1508 | static int do_device_access(struct scsi_cmnd *scmd, | |
1509 | struct sdebug_dev_info *devi, | |
1510 | unsigned long long lba, unsigned int num, int write) | |
1511 | { | |
1512 | int ret; | |
1513 | unsigned int block, rest = 0; | |
1514 | int (*func)(struct scsi_cmnd *, unsigned char *, int); | |
1515 | ||
1516 | func = write ? fetch_to_dev_buffer : fill_from_dev_buffer; | |
1517 | ||
1518 | block = do_div(lba, sdebug_store_sectors); | |
1519 | if (block + num > sdebug_store_sectors) | |
1520 | rest = block + num - sdebug_store_sectors; | |
1521 | ||
1522 | ret = func(scmd, fake_storep + (block * SECT_SIZE), | |
1523 | (num - rest) * SECT_SIZE); | |
1524 | if (!ret && rest) | |
1525 | ret = func(scmd, fake_storep, rest * SECT_SIZE); | |
1526 | ||
1527 | return ret; | |
1528 | } | |
1529 | ||
1530 | static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba, | |
1531 | unsigned int num, struct sdebug_dev_info *devip) | |
1532 | { | |
1533 | unsigned long iflags; | |
1534 | int ret; | |
1535 | ||
1536 | ret = check_device_access_params(devip, lba, num); | |
1537 | if (ret) | |
1538 | return ret; | |
1539 | ||
1da177e4 | 1540 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
c65b1445 DG |
1541 | (lba <= OPT_MEDIUM_ERR_ADDR) && |
1542 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { | |
1543 | /* claim unrecoverable read error */ | |
1da177e4 LT |
1544 | mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, |
1545 | 0); | |
c65b1445 DG |
1546 | /* set info field and valid bit for fixed descriptor */ |
1547 | if (0x70 == (devip->sense_buff[0] & 0x7f)) { | |
1548 | devip->sense_buff[0] |= 0x80; /* Valid bit */ | |
1549 | ret = OPT_MEDIUM_ERR_ADDR; | |
1550 | devip->sense_buff[3] = (ret >> 24) & 0xff; | |
1551 | devip->sense_buff[4] = (ret >> 16) & 0xff; | |
1552 | devip->sense_buff[5] = (ret >> 8) & 0xff; | |
1553 | devip->sense_buff[6] = ret & 0xff; | |
1554 | } | |
1da177e4 LT |
1555 | return check_condition_result; |
1556 | } | |
1557 | read_lock_irqsave(&atomic_rw, iflags); | |
19789100 | 1558 | ret = do_device_access(SCpnt, devip, lba, num, 0); |
1da177e4 LT |
1559 | read_unlock_irqrestore(&atomic_rw, iflags); |
1560 | return ret; | |
1561 | } | |
1562 | ||
19789100 FT |
1563 | static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba, |
1564 | unsigned int num, struct sdebug_dev_info *devip) | |
1da177e4 LT |
1565 | { |
1566 | unsigned long iflags; | |
19789100 | 1567 | int ret; |
1da177e4 | 1568 | |
19789100 FT |
1569 | ret = check_device_access_params(devip, lba, num); |
1570 | if (ret) | |
1571 | return ret; | |
1da177e4 LT |
1572 | |
1573 | write_lock_irqsave(&atomic_rw, iflags); | |
19789100 | 1574 | ret = do_device_access(SCpnt, devip, lba, num, 1); |
1da177e4 | 1575 | write_unlock_irqrestore(&atomic_rw, iflags); |
19789100 | 1576 | if (-1 == ret) |
1da177e4 | 1577 | return (DID_ERROR << 16); |
19789100 | 1578 | else if ((ret < (num * SECT_SIZE)) && |
1da177e4 | 1579 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
c65b1445 | 1580 | printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " |
19789100 | 1581 | " IO sent=%d bytes\n", num * SECT_SIZE, ret); |
1da177e4 LT |
1582 | return 0; |
1583 | } | |
1584 | ||
c65b1445 | 1585 | #define SDEBUG_RLUN_ARR_SZ 256 |
1da177e4 LT |
1586 | |
1587 | static int resp_report_luns(struct scsi_cmnd * scp, | |
1588 | struct sdebug_dev_info * devip) | |
1589 | { | |
1590 | unsigned int alloc_len; | |
c65b1445 | 1591 | int lun_cnt, i, upper, num, n, wlun, lun; |
1da177e4 LT |
1592 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
1593 | int select_report = (int)cmd[2]; | |
1594 | struct scsi_lun *one_lun; | |
1595 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; | |
c65b1445 | 1596 | unsigned char * max_addr; |
1da177e4 LT |
1597 | |
1598 | alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); | |
c65b1445 | 1599 | if ((alloc_len < 4) || (select_report > 2)) { |
1da177e4 LT |
1600 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1601 | 0); | |
1602 | return check_condition_result; | |
1603 | } | |
1604 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ | |
1605 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); | |
1606 | lun_cnt = scsi_debug_max_luns; | |
c65b1445 DG |
1607 | if (1 == select_report) |
1608 | lun_cnt = 0; | |
1609 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) | |
1610 | --lun_cnt; | |
1611 | wlun = (select_report > 0) ? 1 : 0; | |
1612 | num = lun_cnt + wlun; | |
1613 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; | |
1614 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; | |
1615 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / | |
1616 | sizeof(struct scsi_lun)), num); | |
1617 | if (n < num) { | |
1618 | wlun = 0; | |
1619 | lun_cnt = n; | |
1620 | } | |
1da177e4 | 1621 | one_lun = (struct scsi_lun *) &arr[8]; |
c65b1445 DG |
1622 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
1623 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); | |
1624 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); | |
1625 | i++, lun++) { | |
1626 | upper = (lun >> 8) & 0x3f; | |
1da177e4 LT |
1627 | if (upper) |
1628 | one_lun[i].scsi_lun[0] = | |
1629 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); | |
c65b1445 DG |
1630 | one_lun[i].scsi_lun[1] = lun & 0xff; |
1631 | } | |
1632 | if (wlun) { | |
1633 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; | |
1634 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; | |
1635 | i++; | |
1da177e4 | 1636 | } |
c65b1445 | 1637 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
1da177e4 LT |
1638 | return fill_from_dev_buffer(scp, arr, |
1639 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); | |
1640 | } | |
1641 | ||
c639d14e FT |
1642 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
1643 | unsigned int num, struct sdebug_dev_info *devip) | |
1644 | { | |
1645 | int i, j, ret = -1; | |
1646 | unsigned char *kaddr, *buf; | |
1647 | unsigned int offset; | |
1648 | struct scatterlist *sg; | |
1649 | struct scsi_data_buffer *sdb = scsi_in(scp); | |
1650 | ||
1651 | /* better not to use temporary buffer. */ | |
1652 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); | |
1653 | if (!buf) | |
1654 | return ret; | |
1655 | ||
21a61829 | 1656 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
c639d14e FT |
1657 | |
1658 | offset = 0; | |
1659 | for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) { | |
1660 | kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); | |
1661 | if (!kaddr) | |
1662 | goto out; | |
1663 | ||
1664 | for (j = 0; j < sg->length; j++) | |
1665 | *(kaddr + sg->offset + j) ^= *(buf + offset + j); | |
1666 | ||
1667 | offset += sg->length; | |
1668 | kunmap_atomic(kaddr, KM_USER0); | |
1669 | } | |
1670 | ret = 0; | |
1671 | out: | |
1672 | kfree(buf); | |
1673 | ||
1674 | return ret; | |
1675 | } | |
1676 | ||
1da177e4 LT |
1677 | /* When timer goes off this function is called. */ |
1678 | static void timer_intr_handler(unsigned long indx) | |
1679 | { | |
1680 | struct sdebug_queued_cmd * sqcp; | |
1681 | unsigned long iflags; | |
1682 | ||
1683 | if (indx >= SCSI_DEBUG_CANQUEUE) { | |
1684 | printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " | |
1685 | "large\n"); | |
1686 | return; | |
1687 | } | |
1688 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
1689 | sqcp = &queued_arr[(int)indx]; | |
1690 | if (! sqcp->in_use) { | |
1691 | printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected " | |
1692 | "interrupt\n"); | |
1693 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1694 | return; | |
1695 | } | |
1696 | sqcp->in_use = 0; | |
1697 | if (sqcp->done_funct) { | |
1698 | sqcp->a_cmnd->result = sqcp->scsi_result; | |
1699 | sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */ | |
1700 | } | |
1701 | sqcp->done_funct = NULL; | |
1702 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1703 | } | |
1704 | ||
1da177e4 | 1705 | |
8dea0d02 FT |
1706 | static struct sdebug_dev_info * |
1707 | sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags) | |
5cb2fc06 FT |
1708 | { |
1709 | struct sdebug_dev_info *devip; | |
1710 | ||
1711 | devip = kzalloc(sizeof(*devip), flags); | |
1712 | if (devip) { | |
1713 | devip->sdbg_host = sdbg_host; | |
1714 | list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); | |
1715 | } | |
1716 | return devip; | |
1717 | } | |
1718 | ||
1da177e4 LT |
1719 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
1720 | { | |
1721 | struct sdebug_host_info * sdbg_host; | |
1722 | struct sdebug_dev_info * open_devip = NULL; | |
1723 | struct sdebug_dev_info * devip = | |
1724 | (struct sdebug_dev_info *)sdev->hostdata; | |
1725 | ||
1726 | if (devip) | |
1727 | return devip; | |
d1e4c9c5 FT |
1728 | sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
1729 | if (!sdbg_host) { | |
1da177e4 LT |
1730 | printk(KERN_ERR "Host info NULL\n"); |
1731 | return NULL; | |
1732 | } | |
1733 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { | |
1734 | if ((devip->used) && (devip->channel == sdev->channel) && | |
1735 | (devip->target == sdev->id) && | |
1736 | (devip->lun == sdev->lun)) | |
1737 | return devip; | |
1738 | else { | |
1739 | if ((!devip->used) && (!open_devip)) | |
1740 | open_devip = devip; | |
1741 | } | |
1742 | } | |
5cb2fc06 FT |
1743 | if (!open_devip) { /* try and make a new one */ |
1744 | open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); | |
1745 | if (!open_devip) { | |
1da177e4 LT |
1746 | printk(KERN_ERR "%s: out of memory at line %d\n", |
1747 | __FUNCTION__, __LINE__); | |
1748 | return NULL; | |
1749 | } | |
1da177e4 | 1750 | } |
a75869d1 FT |
1751 | |
1752 | open_devip->channel = sdev->channel; | |
1753 | open_devip->target = sdev->id; | |
1754 | open_devip->lun = sdev->lun; | |
1755 | open_devip->sdbg_host = sdbg_host; | |
1756 | open_devip->reset = 1; | |
1757 | open_devip->used = 1; | |
1758 | memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); | |
1759 | if (scsi_debug_dsense) | |
1760 | open_devip->sense_buff[0] = 0x72; | |
1761 | else { | |
1762 | open_devip->sense_buff[0] = 0x70; | |
1763 | open_devip->sense_buff[7] = 0xa; | |
1764 | } | |
1765 | if (sdev->lun == SAM2_WLUN_REPORT_LUNS) | |
1766 | open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; | |
1767 | ||
1768 | return open_devip; | |
1da177e4 LT |
1769 | } |
1770 | ||
8dea0d02 | 1771 | static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
1da177e4 | 1772 | { |
8dea0d02 FT |
1773 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
1774 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", | |
1775 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
75ad23bc | 1776 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); |
8dea0d02 FT |
1777 | return 0; |
1778 | } | |
1da177e4 | 1779 | |
8dea0d02 FT |
1780 | static int scsi_debug_slave_configure(struct scsi_device *sdp) |
1781 | { | |
1782 | struct sdebug_dev_info *devip; | |
a34c4e98 | 1783 | |
8dea0d02 FT |
1784 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
1785 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", | |
1786 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
1787 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) | |
1788 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; | |
1789 | devip = devInfoReg(sdp); | |
1790 | if (NULL == devip) | |
1791 | return 1; /* no resources, will be marked offline */ | |
1792 | sdp->hostdata = devip; | |
1793 | if (sdp->host->cmd_per_lun) | |
1794 | scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, | |
1795 | sdp->host->cmd_per_lun); | |
1796 | blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); | |
1797 | return 0; | |
1798 | } | |
1799 | ||
1800 | static void scsi_debug_slave_destroy(struct scsi_device *sdp) | |
1801 | { | |
1802 | struct sdebug_dev_info *devip = | |
1803 | (struct sdebug_dev_info *)sdp->hostdata; | |
a34c4e98 | 1804 | |
1da177e4 | 1805 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
8dea0d02 FT |
1806 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", |
1807 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
1808 | if (devip) { | |
1809 | /* make this slot avaliable for re-use */ | |
1810 | devip->used = 0; | |
1811 | sdp->hostdata = NULL; | |
1812 | } | |
1813 | } | |
1814 | ||
1815 | /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ | |
1816 | static int stop_queued_cmnd(struct scsi_cmnd *cmnd) | |
1817 | { | |
1818 | unsigned long iflags; | |
1819 | int k; | |
1820 | struct sdebug_queued_cmd *sqcp; | |
1821 | ||
1822 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
1823 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
1824 | sqcp = &queued_arr[k]; | |
1825 | if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { | |
1826 | del_timer_sync(&sqcp->cmnd_timer); | |
1827 | sqcp->in_use = 0; | |
1828 | sqcp->a_cmnd = NULL; | |
1829 | break; | |
1830 | } | |
1831 | } | |
1832 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1833 | return (k < SCSI_DEBUG_CANQUEUE) ? 1 : 0; | |
1834 | } | |
1835 | ||
1836 | /* Deletes (stops) timers of all queued commands */ | |
1837 | static void stop_all_queued(void) | |
1838 | { | |
1839 | unsigned long iflags; | |
1840 | int k; | |
1841 | struct sdebug_queued_cmd *sqcp; | |
1842 | ||
1843 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
1844 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
1845 | sqcp = &queued_arr[k]; | |
1846 | if (sqcp->in_use && sqcp->a_cmnd) { | |
1847 | del_timer_sync(&sqcp->cmnd_timer); | |
1848 | sqcp->in_use = 0; | |
1849 | sqcp->a_cmnd = NULL; | |
1850 | } | |
1851 | } | |
1852 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1da177e4 LT |
1853 | } |
1854 | ||
1855 | static int scsi_debug_abort(struct scsi_cmnd * SCpnt) | |
1856 | { | |
1857 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1858 | printk(KERN_INFO "scsi_debug: abort\n"); | |
1859 | ++num_aborts; | |
1860 | stop_queued_cmnd(SCpnt); | |
1861 | return SUCCESS; | |
1862 | } | |
1863 | ||
1864 | static int scsi_debug_biosparam(struct scsi_device *sdev, | |
1865 | struct block_device * bdev, sector_t capacity, int *info) | |
1866 | { | |
1867 | int res; | |
1868 | unsigned char *buf; | |
1869 | ||
1870 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1871 | printk(KERN_INFO "scsi_debug: biosparam\n"); | |
1872 | buf = scsi_bios_ptable(bdev); | |
1873 | if (buf) { | |
1874 | res = scsi_partsize(buf, capacity, | |
1875 | &info[2], &info[0], &info[1]); | |
1876 | kfree(buf); | |
1877 | if (! res) | |
1878 | return res; | |
1879 | } | |
1880 | info[0] = sdebug_heads; | |
1881 | info[1] = sdebug_sectors_per; | |
1882 | info[2] = sdebug_cylinders_per; | |
1883 | return 0; | |
1884 | } | |
1885 | ||
1886 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) | |
1887 | { | |
1888 | struct sdebug_dev_info * devip; | |
1889 | ||
1890 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1891 | printk(KERN_INFO "scsi_debug: device_reset\n"); | |
1892 | ++num_dev_resets; | |
1893 | if (SCpnt) { | |
1894 | devip = devInfoReg(SCpnt->device); | |
1895 | if (devip) | |
1896 | devip->reset = 1; | |
1897 | } | |
1898 | return SUCCESS; | |
1899 | } | |
1900 | ||
1901 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) | |
1902 | { | |
1903 | struct sdebug_host_info *sdbg_host; | |
1904 | struct sdebug_dev_info * dev_info; | |
1905 | struct scsi_device * sdp; | |
1906 | struct Scsi_Host * hp; | |
1907 | ||
1908 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1909 | printk(KERN_INFO "scsi_debug: bus_reset\n"); | |
1910 | ++num_bus_resets; | |
1911 | if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { | |
d1e4c9c5 | 1912 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
1da177e4 LT |
1913 | if (sdbg_host) { |
1914 | list_for_each_entry(dev_info, | |
1915 | &sdbg_host->dev_info_list, | |
1916 | dev_list) | |
1917 | dev_info->reset = 1; | |
1918 | } | |
1919 | } | |
1920 | return SUCCESS; | |
1921 | } | |
1922 | ||
1923 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) | |
1924 | { | |
1925 | struct sdebug_host_info * sdbg_host; | |
1926 | struct sdebug_dev_info * dev_info; | |
1927 | ||
1928 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1929 | printk(KERN_INFO "scsi_debug: host_reset\n"); | |
1930 | ++num_host_resets; | |
1931 | spin_lock(&sdebug_host_list_lock); | |
1932 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
1933 | list_for_each_entry(dev_info, &sdbg_host->dev_info_list, | |
1934 | dev_list) | |
1935 | dev_info->reset = 1; | |
1936 | } | |
1937 | spin_unlock(&sdebug_host_list_lock); | |
1938 | stop_all_queued(); | |
1939 | return SUCCESS; | |
1940 | } | |
1941 | ||
1da177e4 LT |
1942 | /* Initializes timers in queued array */ |
1943 | static void __init init_all_queued(void) | |
1944 | { | |
1945 | unsigned long iflags; | |
1946 | int k; | |
1947 | struct sdebug_queued_cmd * sqcp; | |
1948 | ||
1949 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
1950 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
1951 | sqcp = &queued_arr[k]; | |
1952 | init_timer(&sqcp->cmnd_timer); | |
1953 | sqcp->in_use = 0; | |
1954 | sqcp->a_cmnd = NULL; | |
1955 | } | |
1956 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1957 | } | |
1958 | ||
f58b0efb | 1959 | static void __init sdebug_build_parts(unsigned char *ramp, |
5f2578e5 | 1960 | unsigned long store_size) |
1da177e4 LT |
1961 | { |
1962 | struct partition * pp; | |
1963 | int starts[SDEBUG_MAX_PARTS + 2]; | |
1964 | int sectors_per_part, num_sectors, k; | |
1965 | int heads_by_sects, start_sec, end_sec; | |
1966 | ||
1967 | /* assume partition table already zeroed */ | |
f58b0efb | 1968 | if ((scsi_debug_num_parts < 1) || (store_size < 1048576)) |
1da177e4 LT |
1969 | return; |
1970 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { | |
1971 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; | |
1972 | printk(KERN_WARNING "scsi_debug:build_parts: reducing " | |
1973 | "partitions to %d\n", SDEBUG_MAX_PARTS); | |
1974 | } | |
c65b1445 | 1975 | num_sectors = (int)sdebug_store_sectors; |
1da177e4 LT |
1976 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
1977 | / scsi_debug_num_parts; | |
1978 | heads_by_sects = sdebug_heads * sdebug_sectors_per; | |
1979 | starts[0] = sdebug_sectors_per; | |
1980 | for (k = 1; k < scsi_debug_num_parts; ++k) | |
1981 | starts[k] = ((k * sectors_per_part) / heads_by_sects) | |
1982 | * heads_by_sects; | |
1983 | starts[scsi_debug_num_parts] = num_sectors; | |
1984 | starts[scsi_debug_num_parts + 1] = 0; | |
1985 | ||
1986 | ramp[510] = 0x55; /* magic partition markings */ | |
1987 | ramp[511] = 0xAA; | |
1988 | pp = (struct partition *)(ramp + 0x1be); | |
1989 | for (k = 0; starts[k + 1]; ++k, ++pp) { | |
1990 | start_sec = starts[k]; | |
1991 | end_sec = starts[k + 1] - 1; | |
1992 | pp->boot_ind = 0; | |
1993 | ||
1994 | pp->cyl = start_sec / heads_by_sects; | |
1995 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) | |
1996 | / sdebug_sectors_per; | |
1997 | pp->sector = (start_sec % sdebug_sectors_per) + 1; | |
1998 | ||
1999 | pp->end_cyl = end_sec / heads_by_sects; | |
2000 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) | |
2001 | / sdebug_sectors_per; | |
2002 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; | |
2003 | ||
2004 | pp->start_sect = start_sec; | |
2005 | pp->nr_sects = end_sec - start_sec + 1; | |
2006 | pp->sys_ind = 0x83; /* plain Linux partition */ | |
2007 | } | |
2008 | } | |
2009 | ||
2010 | static int schedule_resp(struct scsi_cmnd * cmnd, | |
2011 | struct sdebug_dev_info * devip, | |
2012 | done_funct_t done, int scsi_result, int delta_jiff) | |
2013 | { | |
2014 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) { | |
2015 | if (scsi_result) { | |
2016 | struct scsi_device * sdp = cmnd->device; | |
2017 | ||
c65b1445 DG |
2018 | printk(KERN_INFO "scsi_debug: <%u %u %u %u> " |
2019 | "non-zero result=0x%x\n", sdp->host->host_no, | |
2020 | sdp->channel, sdp->id, sdp->lun, scsi_result); | |
1da177e4 LT |
2021 | } |
2022 | } | |
2023 | if (cmnd && devip) { | |
2024 | /* simulate autosense by this driver */ | |
2025 | if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff)) | |
2026 | memcpy(cmnd->sense_buffer, devip->sense_buff, | |
2027 | (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ? | |
2028 | SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE); | |
2029 | } | |
2030 | if (delta_jiff <= 0) { | |
2031 | if (cmnd) | |
2032 | cmnd->result = scsi_result; | |
2033 | if (done) | |
2034 | done(cmnd); | |
2035 | return 0; | |
2036 | } else { | |
2037 | unsigned long iflags; | |
2038 | int k; | |
2039 | struct sdebug_queued_cmd * sqcp = NULL; | |
2040 | ||
2041 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2042 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2043 | sqcp = &queued_arr[k]; | |
2044 | if (! sqcp->in_use) | |
2045 | break; | |
2046 | } | |
2047 | if (k >= SCSI_DEBUG_CANQUEUE) { | |
2048 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2049 | printk(KERN_WARNING "scsi_debug: can_queue exceeded\n"); | |
2050 | return 1; /* report busy to mid level */ | |
2051 | } | |
2052 | sqcp->in_use = 1; | |
2053 | sqcp->a_cmnd = cmnd; | |
2054 | sqcp->scsi_result = scsi_result; | |
2055 | sqcp->done_funct = done; | |
2056 | sqcp->cmnd_timer.function = timer_intr_handler; | |
2057 | sqcp->cmnd_timer.data = k; | |
2058 | sqcp->cmnd_timer.expires = jiffies + delta_jiff; | |
2059 | add_timer(&sqcp->cmnd_timer); | |
2060 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2061 | if (cmnd) | |
2062 | cmnd->result = 0; | |
2063 | return 0; | |
2064 | } | |
2065 | } | |
23183910 DG |
2066 | /* Note: The following macros create attribute files in the |
2067 | /sys/module/scsi_debug/parameters directory. Unfortunately this | |
2068 | driver is unaware of a change and cannot trigger auxiliary actions | |
2069 | as it can when the corresponding attribute in the | |
2070 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. | |
2071 | */ | |
c65b1445 DG |
2072 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
2073 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); | |
2074 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); | |
2075 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); | |
2076 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); | |
23183910 | 2077 | module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); |
c65b1445 DG |
2078 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
2079 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); | |
2080 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); | |
2081 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); | |
2082 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); | |
2083 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); | |
2084 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); | |
2085 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); | |
23183910 DG |
2086 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, |
2087 | S_IRUGO | S_IWUSR); | |
1da177e4 LT |
2088 | |
2089 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); | |
2090 | MODULE_DESCRIPTION("SCSI debug adapter driver"); | |
2091 | MODULE_LICENSE("GPL"); | |
2092 | MODULE_VERSION(SCSI_DEBUG_VERSION); | |
2093 | ||
2094 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); | |
2095 | MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); | |
c65b1445 DG |
2096 | MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); |
2097 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); | |
beb87c33 | 2098 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
23183910 | 2099 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
c65b1445 DG |
2100 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
2101 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); | |
1da177e4 | 2102 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
c65b1445 | 2103 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
6f3cbf55 | 2104 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
1da177e4 LT |
2105 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
2106 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])"); | |
c65b1445 | 2107 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); |
23183910 | 2108 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
1da177e4 LT |
2109 | |
2110 | ||
2111 | static char sdebug_info[256]; | |
2112 | ||
2113 | static const char * scsi_debug_info(struct Scsi_Host * shp) | |
2114 | { | |
2115 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " | |
2116 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, | |
2117 | scsi_debug_version_date, scsi_debug_dev_size_mb, | |
2118 | scsi_debug_opts); | |
2119 | return sdebug_info; | |
2120 | } | |
2121 | ||
2122 | /* scsi_debug_proc_info | |
2123 | * Used if the driver currently has no own support for /proc/scsi | |
2124 | */ | |
2125 | static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset, | |
2126 | int length, int inout) | |
2127 | { | |
2128 | int len, pos, begin; | |
2129 | int orig_length; | |
2130 | ||
2131 | orig_length = length; | |
2132 | ||
2133 | if (inout == 1) { | |
2134 | char arr[16]; | |
2135 | int minLen = length > 15 ? 15 : length; | |
2136 | ||
2137 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
2138 | return -EACCES; | |
2139 | memcpy(arr, buffer, minLen); | |
2140 | arr[minLen] = '\0'; | |
2141 | if (1 != sscanf(arr, "%d", &pos)) | |
2142 | return -EINVAL; | |
2143 | scsi_debug_opts = pos; | |
2144 | if (scsi_debug_every_nth != 0) | |
2145 | scsi_debug_cmnd_count = 0; | |
2146 | return length; | |
2147 | } | |
2148 | begin = 0; | |
2149 | pos = len = sprintf(buffer, "scsi_debug adapter driver, version " | |
2150 | "%s [%s]\n" | |
2151 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " | |
2152 | "every_nth=%d(curr:%d)\n" | |
2153 | "delay=%d, max_luns=%d, scsi_level=%d\n" | |
2154 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" | |
2155 | "number of aborts=%d, device_reset=%d, bus_resets=%d, " | |
2156 | "host_resets=%d\n", | |
2157 | SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, | |
2158 | scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, | |
2159 | scsi_debug_cmnd_count, scsi_debug_delay, | |
2160 | scsi_debug_max_luns, scsi_debug_scsi_level, | |
2161 | SECT_SIZE, sdebug_cylinders_per, sdebug_heads, sdebug_sectors_per, | |
2162 | num_aborts, num_dev_resets, num_bus_resets, num_host_resets); | |
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 | ||
2437 | /* Note: The following function creates attribute files in the | |
2438 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these | |
2439 | files (over those found in the /sys/module/scsi_debug/parameters | |
2440 | directory) is that auxiliary actions can be triggered when an attribute | |
2441 | is changed. For example see: sdebug_add_host_store() above. | |
2442 | */ | |
6ecaff7f | 2443 | static int do_create_driverfs_files(void) |
1da177e4 | 2444 | { |
6ecaff7f RD |
2445 | int ret; |
2446 | ||
2447 | ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host); | |
2448 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay); | |
2449 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); | |
2450 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense); | |
2451 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth); | |
23183910 | 2452 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
6ecaff7f | 2453 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
23183910 | 2454 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); |
6ecaff7f | 2455 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
23183910 | 2456 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
6ecaff7f RD |
2457 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
2458 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts); | |
2459 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); | |
23183910 DG |
2460 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); |
2461 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); | |
6ecaff7f | 2462 | return ret; |
1da177e4 LT |
2463 | } |
2464 | ||
2465 | static void do_remove_driverfs_files(void) | |
2466 | { | |
23183910 DG |
2467 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); |
2468 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); | |
1da177e4 LT |
2469 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
2470 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts); | |
2471 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype); | |
1da177e4 | 2472 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
23183910 DG |
2473 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
2474 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); | |
1da177e4 | 2475 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
23183910 | 2476 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
1da177e4 LT |
2477 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
2478 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense); | |
2479 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); | |
2480 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay); | |
2481 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); | |
2482 | } | |
2483 | ||
8dea0d02 FT |
2484 | static void pseudo_0_release(struct device *dev) |
2485 | { | |
2486 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2487 | printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n"); | |
2488 | } | |
2489 | ||
2490 | static struct device pseudo_primary = { | |
2491 | .bus_id = "pseudo_0", | |
2492 | .release = pseudo_0_release, | |
2493 | }; | |
2494 | ||
1da177e4 LT |
2495 | static int __init scsi_debug_init(void) |
2496 | { | |
5f2578e5 | 2497 | unsigned long sz; |
1da177e4 LT |
2498 | int host_to_add; |
2499 | int k; | |
6ecaff7f | 2500 | int ret; |
1da177e4 LT |
2501 | |
2502 | if (scsi_debug_dev_size_mb < 1) | |
2503 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ | |
5f2578e5 | 2504 | sz = (unsigned long)scsi_debug_dev_size_mb * 1048576; |
f58b0efb | 2505 | sdebug_store_sectors = sz / SECT_SIZE; |
28898873 | 2506 | sdebug_capacity = get_sdebug_capacity(); |
1da177e4 LT |
2507 | |
2508 | /* play around with geometry, don't waste too much on track 0 */ | |
2509 | sdebug_heads = 8; | |
2510 | sdebug_sectors_per = 32; | |
2511 | if (scsi_debug_dev_size_mb >= 16) | |
2512 | sdebug_heads = 32; | |
2513 | else if (scsi_debug_dev_size_mb >= 256) | |
2514 | sdebug_heads = 64; | |
2515 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
2516 | (sdebug_sectors_per * sdebug_heads); | |
2517 | if (sdebug_cylinders_per >= 1024) { | |
2518 | /* other LLDs do this; implies >= 1GB ram disk ... */ | |
2519 | sdebug_heads = 255; | |
2520 | sdebug_sectors_per = 63; | |
2521 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
2522 | (sdebug_sectors_per * sdebug_heads); | |
2523 | } | |
2524 | ||
1da177e4 LT |
2525 | fake_storep = vmalloc(sz); |
2526 | if (NULL == fake_storep) { | |
2527 | printk(KERN_ERR "scsi_debug_init: out of memory, 1\n"); | |
2528 | return -ENOMEM; | |
2529 | } | |
2530 | memset(fake_storep, 0, sz); | |
2531 | if (scsi_debug_num_parts > 0) | |
f58b0efb | 2532 | sdebug_build_parts(fake_storep, sz); |
1da177e4 | 2533 | |
6ecaff7f RD |
2534 | ret = device_register(&pseudo_primary); |
2535 | if (ret < 0) { | |
2536 | printk(KERN_WARNING "scsi_debug: device_register error: %d\n", | |
2537 | ret); | |
2538 | goto free_vm; | |
2539 | } | |
2540 | ret = bus_register(&pseudo_lld_bus); | |
2541 | if (ret < 0) { | |
2542 | printk(KERN_WARNING "scsi_debug: bus_register error: %d\n", | |
2543 | ret); | |
2544 | goto dev_unreg; | |
2545 | } | |
2546 | ret = driver_register(&sdebug_driverfs_driver); | |
2547 | if (ret < 0) { | |
2548 | printk(KERN_WARNING "scsi_debug: driver_register error: %d\n", | |
2549 | ret); | |
2550 | goto bus_unreg; | |
2551 | } | |
2552 | ret = do_create_driverfs_files(); | |
2553 | if (ret < 0) { | |
2554 | printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n", | |
2555 | ret); | |
2556 | goto del_files; | |
2557 | } | |
1da177e4 | 2558 | |
6ecaff7f | 2559 | init_all_queued(); |
1da177e4 | 2560 | |
1da177e4 LT |
2561 | host_to_add = scsi_debug_add_host; |
2562 | scsi_debug_add_host = 0; | |
2563 | ||
2564 | for (k = 0; k < host_to_add; k++) { | |
2565 | if (sdebug_add_adapter()) { | |
2566 | printk(KERN_ERR "scsi_debug_init: " | |
2567 | "sdebug_add_adapter failed k=%d\n", k); | |
2568 | break; | |
2569 | } | |
2570 | } | |
2571 | ||
2572 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
2573 | printk(KERN_INFO "scsi_debug_init: built %d host(s)\n", | |
2574 | scsi_debug_add_host); | |
2575 | } | |
2576 | return 0; | |
6ecaff7f RD |
2577 | |
2578 | del_files: | |
2579 | do_remove_driverfs_files(); | |
2580 | driver_unregister(&sdebug_driverfs_driver); | |
2581 | bus_unreg: | |
2582 | bus_unregister(&pseudo_lld_bus); | |
2583 | dev_unreg: | |
2584 | device_unregister(&pseudo_primary); | |
2585 | free_vm: | |
2586 | vfree(fake_storep); | |
2587 | ||
2588 | return ret; | |
1da177e4 LT |
2589 | } |
2590 | ||
2591 | static void __exit scsi_debug_exit(void) | |
2592 | { | |
2593 | int k = scsi_debug_add_host; | |
2594 | ||
2595 | stop_all_queued(); | |
2596 | for (; k; k--) | |
2597 | sdebug_remove_adapter(); | |
2598 | do_remove_driverfs_files(); | |
2599 | driver_unregister(&sdebug_driverfs_driver); | |
2600 | bus_unregister(&pseudo_lld_bus); | |
2601 | device_unregister(&pseudo_primary); | |
2602 | ||
2603 | vfree(fake_storep); | |
2604 | } | |
2605 | ||
2606 | device_initcall(scsi_debug_init); | |
2607 | module_exit(scsi_debug_exit); | |
2608 | ||
1da177e4 LT |
2609 | static void sdebug_release_adapter(struct device * dev) |
2610 | { | |
2611 | struct sdebug_host_info *sdbg_host; | |
2612 | ||
2613 | sdbg_host = to_sdebug_host(dev); | |
2614 | kfree(sdbg_host); | |
2615 | } | |
2616 | ||
2617 | static int sdebug_add_adapter(void) | |
2618 | { | |
2619 | int k, devs_per_host; | |
2620 | int error = 0; | |
2621 | struct sdebug_host_info *sdbg_host; | |
8b40228f | 2622 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 | 2623 | |
c65b1445 | 2624 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
1da177e4 LT |
2625 | if (NULL == sdbg_host) { |
2626 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
2627 | __FUNCTION__, __LINE__); | |
2628 | return -ENOMEM; | |
2629 | } | |
2630 | ||
1da177e4 LT |
2631 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
2632 | ||
2633 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; | |
2634 | for (k = 0; k < devs_per_host; k++) { | |
5cb2fc06 FT |
2635 | sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); |
2636 | if (!sdbg_devinfo) { | |
1da177e4 LT |
2637 | printk(KERN_ERR "%s: out of memory at line %d\n", |
2638 | __FUNCTION__, __LINE__); | |
2639 | error = -ENOMEM; | |
2640 | goto clean; | |
2641 | } | |
1da177e4 LT |
2642 | } |
2643 | ||
2644 | spin_lock(&sdebug_host_list_lock); | |
2645 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); | |
2646 | spin_unlock(&sdebug_host_list_lock); | |
2647 | ||
2648 | sdbg_host->dev.bus = &pseudo_lld_bus; | |
2649 | sdbg_host->dev.parent = &pseudo_primary; | |
2650 | sdbg_host->dev.release = &sdebug_release_adapter; | |
2651 | sprintf(sdbg_host->dev.bus_id, "adapter%d", scsi_debug_add_host); | |
2652 | ||
2653 | error = device_register(&sdbg_host->dev); | |
2654 | ||
2655 | if (error) | |
2656 | goto clean; | |
2657 | ||
2658 | ++scsi_debug_add_host; | |
2659 | return error; | |
2660 | ||
2661 | clean: | |
8b40228f FT |
2662 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
2663 | dev_list) { | |
1da177e4 LT |
2664 | list_del(&sdbg_devinfo->dev_list); |
2665 | kfree(sdbg_devinfo); | |
2666 | } | |
2667 | ||
2668 | kfree(sdbg_host); | |
2669 | return error; | |
2670 | } | |
2671 | ||
2672 | static void sdebug_remove_adapter(void) | |
2673 | { | |
2674 | struct sdebug_host_info * sdbg_host = NULL; | |
2675 | ||
2676 | spin_lock(&sdebug_host_list_lock); | |
2677 | if (!list_empty(&sdebug_host_list)) { | |
2678 | sdbg_host = list_entry(sdebug_host_list.prev, | |
2679 | struct sdebug_host_info, host_list); | |
2680 | list_del(&sdbg_host->host_list); | |
2681 | } | |
2682 | spin_unlock(&sdebug_host_list_lock); | |
2683 | ||
2684 | if (!sdbg_host) | |
2685 | return; | |
2686 | ||
2687 | device_unregister(&sdbg_host->dev); | |
2688 | --scsi_debug_add_host; | |
2689 | } | |
2690 | ||
639db475 FT |
2691 | static |
2692 | int scsi_debug_queuecommand(struct scsi_cmnd *SCpnt, done_funct_t done) | |
2693 | { | |
2694 | unsigned char *cmd = (unsigned char *) SCpnt->cmnd; | |
2695 | int len, k; | |
2696 | unsigned int num; | |
2697 | unsigned long long lba; | |
2698 | int errsts = 0; | |
2699 | int target = SCpnt->device->id; | |
2700 | struct sdebug_dev_info *devip = NULL; | |
2701 | int inj_recovered = 0; | |
2702 | int inj_transport = 0; | |
2703 | int delay_override = 0; | |
2704 | ||
2705 | scsi_set_resid(SCpnt, 0); | |
2706 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { | |
2707 | printk(KERN_INFO "scsi_debug: cmd "); | |
2708 | for (k = 0, len = SCpnt->cmd_len; k < len; ++k) | |
2709 | printk("%02x ", (int)cmd[k]); | |
2710 | printk("\n"); | |
2711 | } | |
2712 | ||
2713 | if (target == SCpnt->device->host->hostt->this_id) { | |
2714 | printk(KERN_INFO "scsi_debug: initiator's id used as " | |
2715 | "target!\n"); | |
2716 | return schedule_resp(SCpnt, NULL, done, | |
2717 | DID_NO_CONNECT << 16, 0); | |
2718 | } | |
2719 | ||
2720 | if ((SCpnt->device->lun >= scsi_debug_max_luns) && | |
2721 | (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) | |
2722 | return schedule_resp(SCpnt, NULL, done, | |
2723 | DID_NO_CONNECT << 16, 0); | |
2724 | devip = devInfoReg(SCpnt->device); | |
2725 | if (NULL == devip) | |
2726 | return schedule_resp(SCpnt, NULL, done, | |
2727 | DID_NO_CONNECT << 16, 0); | |
2728 | ||
2729 | if ((scsi_debug_every_nth != 0) && | |
2730 | (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { | |
2731 | scsi_debug_cmnd_count = 0; | |
2732 | if (scsi_debug_every_nth < -1) | |
2733 | scsi_debug_every_nth = -1; | |
2734 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) | |
2735 | return 0; /* ignore command causing timeout */ | |
2736 | else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) | |
2737 | inj_recovered = 1; /* to reads and writes below */ | |
2738 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts) | |
2739 | inj_transport = 1; /* to reads and writes below */ | |
2740 | } | |
2741 | ||
2742 | if (devip->wlun) { | |
2743 | switch (*cmd) { | |
2744 | case INQUIRY: | |
2745 | case REQUEST_SENSE: | |
2746 | case TEST_UNIT_READY: | |
2747 | case REPORT_LUNS: | |
2748 | break; /* only allowable wlun commands */ | |
2749 | default: | |
2750 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2751 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x " | |
2752 | "not supported for wlun\n", *cmd); | |
2753 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
2754 | INVALID_OPCODE, 0); | |
2755 | errsts = check_condition_result; | |
2756 | return schedule_resp(SCpnt, devip, done, errsts, | |
2757 | 0); | |
2758 | } | |
2759 | } | |
2760 | ||
2761 | switch (*cmd) { | |
2762 | case INQUIRY: /* mandatory, ignore unit attention */ | |
2763 | delay_override = 1; | |
2764 | errsts = resp_inquiry(SCpnt, target, devip); | |
2765 | break; | |
2766 | case REQUEST_SENSE: /* mandatory, ignore unit attention */ | |
2767 | delay_override = 1; | |
2768 | errsts = resp_requests(SCpnt, devip); | |
2769 | break; | |
2770 | case REZERO_UNIT: /* actually this is REWIND for SSC */ | |
2771 | case START_STOP: | |
2772 | errsts = resp_start_stop(SCpnt, devip); | |
2773 | break; | |
2774 | case ALLOW_MEDIUM_REMOVAL: | |
2775 | errsts = check_readiness(SCpnt, 1, devip); | |
2776 | if (errsts) | |
2777 | break; | |
2778 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2779 | printk(KERN_INFO "scsi_debug: Medium removal %s\n", | |
2780 | cmd[4] ? "inhibited" : "enabled"); | |
2781 | break; | |
2782 | case SEND_DIAGNOSTIC: /* mandatory */ | |
2783 | errsts = check_readiness(SCpnt, 1, devip); | |
2784 | break; | |
2785 | case TEST_UNIT_READY: /* mandatory */ | |
2786 | delay_override = 1; | |
2787 | errsts = check_readiness(SCpnt, 0, devip); | |
2788 | break; | |
2789 | case RESERVE: | |
2790 | errsts = check_readiness(SCpnt, 1, devip); | |
2791 | break; | |
2792 | case RESERVE_10: | |
2793 | errsts = check_readiness(SCpnt, 1, devip); | |
2794 | break; | |
2795 | case RELEASE: | |
2796 | errsts = check_readiness(SCpnt, 1, devip); | |
2797 | break; | |
2798 | case RELEASE_10: | |
2799 | errsts = check_readiness(SCpnt, 1, devip); | |
2800 | break; | |
2801 | case READ_CAPACITY: | |
2802 | errsts = resp_readcap(SCpnt, devip); | |
2803 | break; | |
2804 | case SERVICE_ACTION_IN: | |
2805 | if (SAI_READ_CAPACITY_16 != cmd[1]) { | |
2806 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
2807 | INVALID_OPCODE, 0); | |
2808 | errsts = check_condition_result; | |
2809 | break; | |
2810 | } | |
2811 | errsts = resp_readcap16(SCpnt, devip); | |
2812 | break; | |
2813 | case MAINTENANCE_IN: | |
2814 | if (MI_REPORT_TARGET_PGS != cmd[1]) { | |
2815 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
2816 | INVALID_OPCODE, 0); | |
2817 | errsts = check_condition_result; | |
2818 | break; | |
2819 | } | |
2820 | errsts = resp_report_tgtpgs(SCpnt, devip); | |
2821 | break; | |
2822 | case READ_16: | |
2823 | case READ_12: | |
2824 | case READ_10: | |
2825 | case READ_6: | |
2826 | errsts = check_readiness(SCpnt, 0, devip); | |
2827 | if (errsts) | |
2828 | break; | |
2829 | if (scsi_debug_fake_rw) | |
2830 | break; | |
2831 | get_data_transfer_info(cmd, &lba, &num); | |
2832 | errsts = resp_read(SCpnt, lba, num, devip); | |
2833 | if (inj_recovered && (0 == errsts)) { | |
2834 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
2835 | THRESHOLD_EXCEEDED, 0); | |
2836 | errsts = check_condition_result; | |
2837 | } else if (inj_transport && (0 == errsts)) { | |
2838 | mk_sense_buffer(devip, ABORTED_COMMAND, | |
2839 | TRANSPORT_PROBLEM, ACK_NAK_TO); | |
2840 | errsts = check_condition_result; | |
2841 | } | |
2842 | break; | |
2843 | case REPORT_LUNS: /* mandatory, ignore unit attention */ | |
2844 | delay_override = 1; | |
2845 | errsts = resp_report_luns(SCpnt, devip); | |
2846 | break; | |
2847 | case VERIFY: /* 10 byte SBC-2 command */ | |
2848 | errsts = check_readiness(SCpnt, 0, devip); | |
2849 | break; | |
2850 | case WRITE_16: | |
2851 | case WRITE_12: | |
2852 | case WRITE_10: | |
2853 | case WRITE_6: | |
2854 | errsts = check_readiness(SCpnt, 0, devip); | |
2855 | if (errsts) | |
2856 | break; | |
2857 | if (scsi_debug_fake_rw) | |
2858 | break; | |
2859 | get_data_transfer_info(cmd, &lba, &num); | |
2860 | errsts = resp_write(SCpnt, lba, num, devip); | |
2861 | if (inj_recovered && (0 == errsts)) { | |
2862 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
2863 | THRESHOLD_EXCEEDED, 0); | |
2864 | errsts = check_condition_result; | |
2865 | } | |
2866 | break; | |
2867 | case MODE_SENSE: | |
2868 | case MODE_SENSE_10: | |
2869 | errsts = resp_mode_sense(SCpnt, target, devip); | |
2870 | break; | |
2871 | case MODE_SELECT: | |
2872 | errsts = resp_mode_select(SCpnt, 1, devip); | |
2873 | break; | |
2874 | case MODE_SELECT_10: | |
2875 | errsts = resp_mode_select(SCpnt, 0, devip); | |
2876 | break; | |
2877 | case LOG_SENSE: | |
2878 | errsts = resp_log_sense(SCpnt, devip); | |
2879 | break; | |
2880 | case SYNCHRONIZE_CACHE: | |
2881 | delay_override = 1; | |
2882 | errsts = check_readiness(SCpnt, 0, devip); | |
2883 | break; | |
2884 | case WRITE_BUFFER: | |
2885 | errsts = check_readiness(SCpnt, 1, devip); | |
2886 | break; | |
2887 | case XDWRITEREAD_10: | |
2888 | if (!scsi_bidi_cmnd(SCpnt)) { | |
2889 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
2890 | INVALID_FIELD_IN_CDB, 0); | |
2891 | errsts = check_condition_result; | |
2892 | break; | |
2893 | } | |
2894 | ||
2895 | errsts = check_readiness(SCpnt, 0, devip); | |
2896 | if (errsts) | |
2897 | break; | |
2898 | if (scsi_debug_fake_rw) | |
2899 | break; | |
2900 | get_data_transfer_info(cmd, &lba, &num); | |
2901 | errsts = resp_read(SCpnt, lba, num, devip); | |
2902 | if (errsts) | |
2903 | break; | |
2904 | errsts = resp_write(SCpnt, lba, num, devip); | |
2905 | if (errsts) | |
2906 | break; | |
2907 | errsts = resp_xdwriteread(SCpnt, lba, num, devip); | |
2908 | break; | |
2909 | default: | |
2910 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2911 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " | |
2912 | "supported\n", *cmd); | |
2913 | errsts = check_readiness(SCpnt, 1, devip); | |
2914 | if (errsts) | |
2915 | break; /* Unit attention takes precedence */ | |
2916 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); | |
2917 | errsts = check_condition_result; | |
2918 | break; | |
2919 | } | |
2920 | return schedule_resp(SCpnt, devip, done, errsts, | |
2921 | (delay_override ? 0 : scsi_debug_delay)); | |
2922 | } | |
2923 | ||
9e603ca0 FT |
2924 | static struct scsi_host_template sdebug_driver_template = { |
2925 | .proc_info = scsi_debug_proc_info, | |
2926 | .proc_name = sdebug_proc_name, | |
2927 | .name = "SCSI DEBUG", | |
2928 | .info = scsi_debug_info, | |
2929 | .slave_alloc = scsi_debug_slave_alloc, | |
2930 | .slave_configure = scsi_debug_slave_configure, | |
2931 | .slave_destroy = scsi_debug_slave_destroy, | |
2932 | .ioctl = scsi_debug_ioctl, | |
2933 | .queuecommand = scsi_debug_queuecommand, | |
2934 | .eh_abort_handler = scsi_debug_abort, | |
2935 | .eh_bus_reset_handler = scsi_debug_bus_reset, | |
2936 | .eh_device_reset_handler = scsi_debug_device_reset, | |
2937 | .eh_host_reset_handler = scsi_debug_host_reset, | |
2938 | .bios_param = scsi_debug_biosparam, | |
2939 | .can_queue = SCSI_DEBUG_CANQUEUE, | |
2940 | .this_id = 7, | |
2941 | .sg_tablesize = 256, | |
2942 | .cmd_per_lun = 16, | |
2943 | .max_sectors = 0xffff, | |
2944 | .use_clustering = DISABLE_CLUSTERING, | |
2945 | .module = THIS_MODULE, | |
2946 | }; | |
2947 | ||
1da177e4 LT |
2948 | static int sdebug_driver_probe(struct device * dev) |
2949 | { | |
2950 | int error = 0; | |
2951 | struct sdebug_host_info *sdbg_host; | |
2952 | struct Scsi_Host *hpnt; | |
2953 | ||
2954 | sdbg_host = to_sdebug_host(dev); | |
2955 | ||
2956 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); | |
2957 | if (NULL == hpnt) { | |
2958 | printk(KERN_ERR "%s: scsi_register failed\n", __FUNCTION__); | |
2959 | error = -ENODEV; | |
2960 | return error; | |
2961 | } | |
2962 | ||
2963 | sdbg_host->shost = hpnt; | |
2964 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; | |
2965 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) | |
2966 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
2967 | else | |
2968 | hpnt->max_id = scsi_debug_num_tgts; | |
c65b1445 | 2969 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
1da177e4 LT |
2970 | |
2971 | error = scsi_add_host(hpnt, &sdbg_host->dev); | |
2972 | if (error) { | |
2973 | printk(KERN_ERR "%s: scsi_add_host failed\n", __FUNCTION__); | |
2974 | error = -ENODEV; | |
2975 | scsi_host_put(hpnt); | |
2976 | } else | |
2977 | scsi_scan_host(hpnt); | |
2978 | ||
2979 | ||
2980 | return error; | |
2981 | } | |
2982 | ||
2983 | static int sdebug_driver_remove(struct device * dev) | |
2984 | { | |
1da177e4 | 2985 | struct sdebug_host_info *sdbg_host; |
8b40228f | 2986 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
1da177e4 LT |
2987 | |
2988 | sdbg_host = to_sdebug_host(dev); | |
2989 | ||
2990 | if (!sdbg_host) { | |
2991 | printk(KERN_ERR "%s: Unable to locate host info\n", | |
2992 | __FUNCTION__); | |
2993 | return -ENODEV; | |
2994 | } | |
2995 | ||
2996 | scsi_remove_host(sdbg_host->shost); | |
2997 | ||
8b40228f FT |
2998 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
2999 | dev_list) { | |
1da177e4 LT |
3000 | list_del(&sdbg_devinfo->dev_list); |
3001 | kfree(sdbg_devinfo); | |
3002 | } | |
3003 | ||
3004 | scsi_host_put(sdbg_host->shost); | |
3005 | return 0; | |
3006 | } | |
3007 | ||
8dea0d02 FT |
3008 | static int pseudo_lld_bus_match(struct device *dev, |
3009 | struct device_driver *dev_driver) | |
1da177e4 | 3010 | { |
8dea0d02 | 3011 | return 1; |
1da177e4 | 3012 | } |
8dea0d02 FT |
3013 | |
3014 | static struct bus_type pseudo_lld_bus = { | |
3015 | .name = "pseudo", | |
3016 | .match = pseudo_lld_bus_match, | |
3017 | .probe = sdebug_driver_probe, | |
3018 | .remove = sdebug_driver_remove, | |
3019 | }; |