Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/kernel/scsi_debug.c | |
3 | * vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv | |
4 | * Copyright (C) 1992 Eric Youngdale | |
5 | * Simulate a host adapter with 2 disks attached. Do a lot of checking | |
6 | * to make sure that we are not getting blocks mixed up, and PANIC if | |
7 | * anything out of the ordinary is seen. | |
8 | * ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
9 | * | |
10 | * This version is more generic, simulating a variable number of disk | |
11 | * (or disk like devices) sharing a common amount of RAM | |
12 | * | |
13 | * | |
14 | * For documentation see http://www.torque.net/sg/sdebug26.html | |
15 | * | |
16 | * D. Gilbert (dpg) work for Magneto-Optical device test [20010421] | |
17 | * dpg: work for devfs large number of disks [20010809] | |
18 | * forked for lk 2.5 series [20011216, 20020101] | |
19 | * use vmalloc() more inquiry+mode_sense [20020302] | |
20 | * add timers for delayed responses [20020721] | |
21 | * Patrick Mansfield <patmans@us.ibm.com> max_luns+scsi_level [20021031] | |
22 | * Mike Anderson <andmike@us.ibm.com> sysfs work [20021118] | |
23 | * dpg: change style of boot options to "scsi_debug.num_tgts=2" and | |
24 | * module options to "modprobe scsi_debug num_tgts=2" [20021221] | |
25 | */ | |
26 | ||
1da177e4 LT |
27 | #include <linux/module.h> |
28 | ||
29 | #include <linux/kernel.h> | |
30 | #include <linux/sched.h> | |
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> | |
39 | #include <linux/smp_lock.h> | |
40 | #include <linux/vmalloc.h> | |
41 | #include <linux/moduleparam.h> | |
42 | ||
43 | #include <linux/blkdev.h> | |
44 | #include "scsi.h" | |
45 | #include <scsi/scsi_host.h> | |
46 | #include <scsi/scsicam.h> | |
47 | ||
48 | #include <linux/stat.h> | |
49 | ||
1da177e4 LT |
50 | #include "scsi_logging.h" |
51 | #include "scsi_debug.h" | |
52 | ||
c65b1445 DG |
53 | #define SCSI_DEBUG_VERSION "1.79" |
54 | static const char * scsi_debug_version_date = "20060604"; | |
1da177e4 LT |
55 | |
56 | /* Additional Sense Code (ASC) used */ | |
c65b1445 DG |
57 | #define NO_ADDITIONAL_SENSE 0x0 |
58 | #define LOGICAL_UNIT_NOT_READY 0x4 | |
1da177e4 | 59 | #define UNRECOVERED_READ_ERR 0x11 |
c65b1445 | 60 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
1da177e4 LT |
61 | #define INVALID_OPCODE 0x20 |
62 | #define ADDR_OUT_OF_RANGE 0x21 | |
63 | #define INVALID_FIELD_IN_CDB 0x24 | |
c65b1445 | 64 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
1da177e4 LT |
65 | #define POWERON_RESET 0x29 |
66 | #define SAVING_PARAMS_UNSUP 0x39 | |
c65b1445 DG |
67 | #define THRESHOLD_EXCEEDED 0x5d |
68 | #define LOW_POWER_COND_ON 0x5e | |
1da177e4 LT |
69 | |
70 | #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ | |
71 | ||
72 | /* Default values for driver parameters */ | |
73 | #define DEF_NUM_HOST 1 | |
74 | #define DEF_NUM_TGTS 1 | |
75 | #define DEF_MAX_LUNS 1 | |
76 | /* With these defaults, this driver will make 1 host with 1 target | |
77 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. | |
78 | */ | |
79 | #define DEF_DELAY 1 | |
80 | #define DEF_DEV_SIZE_MB 8 | |
81 | #define DEF_EVERY_NTH 0 | |
82 | #define DEF_NUM_PARTS 0 | |
83 | #define DEF_OPTS 0 | |
84 | #define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ | |
85 | #define DEF_PTYPE 0 | |
86 | #define DEF_D_SENSE 0 | |
c65b1445 DG |
87 | #define DEF_NO_LUN_0 0 |
88 | #define DEF_VIRTUAL_GB 0 | |
1da177e4 LT |
89 | |
90 | /* bit mask values for scsi_debug_opts */ | |
91 | #define SCSI_DEBUG_OPT_NOISE 1 | |
92 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 | |
93 | #define SCSI_DEBUG_OPT_TIMEOUT 4 | |
94 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 | |
95 | /* When "every_nth" > 0 then modulo "every_nth" commands: | |
96 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
97 | * - a RECOVERED_ERROR is simulated on successful read and write | |
98 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
99 | * | |
100 | * When "every_nth" < 0 then after "- every_nth" commands: | |
101 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
102 | * - a RECOVERED_ERROR is simulated on successful read and write | |
103 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
104 | * This will continue until some other action occurs (e.g. the user | |
105 | * writing a new value (other than -1 or 1) to every_nth via sysfs). | |
106 | */ | |
107 | ||
108 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this | |
109 | * sector on read commands: */ | |
110 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ | |
111 | ||
112 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) | |
113 | * or "peripheral device" addressing (value 0) */ | |
114 | #define SAM2_LUN_ADDRESS_METHOD 0 | |
c65b1445 | 115 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
1da177e4 LT |
116 | |
117 | static int scsi_debug_add_host = DEF_NUM_HOST; | |
118 | static int scsi_debug_delay = DEF_DELAY; | |
119 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; | |
120 | static int scsi_debug_every_nth = DEF_EVERY_NTH; | |
121 | static int scsi_debug_max_luns = DEF_MAX_LUNS; | |
122 | static int scsi_debug_num_parts = DEF_NUM_PARTS; | |
123 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ | |
124 | static int scsi_debug_opts = DEF_OPTS; | |
125 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; | |
126 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ | |
127 | static int scsi_debug_dsense = DEF_D_SENSE; | |
c65b1445 DG |
128 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
129 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; | |
1da177e4 LT |
130 | |
131 | static int scsi_debug_cmnd_count = 0; | |
132 | ||
133 | #define DEV_READONLY(TGT) (0) | |
134 | #define DEV_REMOVEABLE(TGT) (0) | |
135 | ||
c65b1445 DG |
136 | static unsigned int sdebug_store_size; /* in bytes */ |
137 | static unsigned int sdebug_store_sectors; | |
1da177e4 LT |
138 | static sector_t sdebug_capacity; /* in sectors */ |
139 | ||
140 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages | |
141 | may still need them */ | |
142 | static int sdebug_heads; /* heads per disk */ | |
143 | static int sdebug_cylinders_per; /* cylinders per surface */ | |
144 | static int sdebug_sectors_per; /* sectors per cylinder */ | |
145 | ||
146 | /* default sector size is 512 bytes, 2**9 bytes */ | |
147 | #define POW2_SECT_SIZE 9 | |
148 | #define SECT_SIZE (1 << POW2_SECT_SIZE) | |
149 | #define SECT_SIZE_PER(TGT) SECT_SIZE | |
150 | ||
151 | #define SDEBUG_MAX_PARTS 4 | |
152 | ||
153 | #define SDEBUG_SENSE_LEN 32 | |
154 | ||
155 | struct sdebug_dev_info { | |
156 | struct list_head dev_list; | |
157 | unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ | |
158 | unsigned int channel; | |
159 | unsigned int target; | |
160 | unsigned int lun; | |
161 | struct sdebug_host_info *sdbg_host; | |
c65b1445 | 162 | unsigned int wlun; |
1da177e4 | 163 | char reset; |
c65b1445 | 164 | char stopped; |
1da177e4 LT |
165 | char used; |
166 | }; | |
167 | ||
168 | struct sdebug_host_info { | |
169 | struct list_head host_list; | |
170 | struct Scsi_Host *shost; | |
171 | struct device dev; | |
172 | struct list_head dev_info_list; | |
173 | }; | |
174 | ||
175 | #define to_sdebug_host(d) \ | |
176 | container_of(d, struct sdebug_host_info, dev) | |
177 | ||
178 | static LIST_HEAD(sdebug_host_list); | |
179 | static DEFINE_SPINLOCK(sdebug_host_list_lock); | |
180 | ||
181 | typedef void (* done_funct_t) (struct scsi_cmnd *); | |
182 | ||
183 | struct sdebug_queued_cmd { | |
184 | int in_use; | |
185 | struct timer_list cmnd_timer; | |
186 | done_funct_t done_funct; | |
187 | struct scsi_cmnd * a_cmnd; | |
188 | int scsi_result; | |
189 | }; | |
190 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; | |
191 | ||
d0be4a7d | 192 | static struct scsi_host_template sdebug_driver_template = { |
1da177e4 LT |
193 | .proc_info = scsi_debug_proc_info, |
194 | .name = "SCSI DEBUG", | |
195 | .info = scsi_debug_info, | |
196 | .slave_alloc = scsi_debug_slave_alloc, | |
197 | .slave_configure = scsi_debug_slave_configure, | |
198 | .slave_destroy = scsi_debug_slave_destroy, | |
199 | .ioctl = scsi_debug_ioctl, | |
200 | .queuecommand = scsi_debug_queuecommand, | |
201 | .eh_abort_handler = scsi_debug_abort, | |
202 | .eh_bus_reset_handler = scsi_debug_bus_reset, | |
203 | .eh_device_reset_handler = scsi_debug_device_reset, | |
204 | .eh_host_reset_handler = scsi_debug_host_reset, | |
205 | .bios_param = scsi_debug_biosparam, | |
206 | .can_queue = SCSI_DEBUG_CANQUEUE, | |
207 | .this_id = 7, | |
c65b1445 DG |
208 | .sg_tablesize = 256, |
209 | .cmd_per_lun = 16, | |
210 | .max_sectors = 0xffff, | |
1da177e4 | 211 | .unchecked_isa_dma = 0, |
c65b1445 | 212 | .use_clustering = ENABLE_CLUSTERING, |
1da177e4 LT |
213 | .module = THIS_MODULE, |
214 | }; | |
215 | ||
216 | static unsigned char * fake_storep; /* ramdisk storage */ | |
217 | ||
218 | static int num_aborts = 0; | |
219 | static int num_dev_resets = 0; | |
220 | static int num_bus_resets = 0; | |
221 | static int num_host_resets = 0; | |
222 | ||
223 | static DEFINE_SPINLOCK(queued_arr_lock); | |
224 | static DEFINE_RWLOCK(atomic_rw); | |
225 | ||
226 | static char sdebug_proc_name[] = "scsi_debug"; | |
227 | ||
228 | static int sdebug_driver_probe(struct device *); | |
229 | static int sdebug_driver_remove(struct device *); | |
230 | static struct bus_type pseudo_lld_bus; | |
231 | ||
232 | static struct device_driver sdebug_driverfs_driver = { | |
233 | .name = sdebug_proc_name, | |
234 | .bus = &pseudo_lld_bus, | |
1da177e4 LT |
235 | }; |
236 | ||
237 | static const int check_condition_result = | |
238 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | |
239 | ||
c65b1445 DG |
240 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
241 | 0, 0, 0x2, 0x4b}; | |
242 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
243 | 0, 0, 0x0, 0x0}; | |
244 | ||
1da177e4 LT |
245 | /* function declarations */ |
246 | static int resp_inquiry(struct scsi_cmnd * SCpnt, int target, | |
247 | struct sdebug_dev_info * devip); | |
248 | static int resp_requests(struct scsi_cmnd * SCpnt, | |
249 | struct sdebug_dev_info * devip); | |
c65b1445 DG |
250 | static int resp_start_stop(struct scsi_cmnd * scp, |
251 | struct sdebug_dev_info * devip); | |
1da177e4 LT |
252 | static int resp_readcap(struct scsi_cmnd * SCpnt, |
253 | struct sdebug_dev_info * devip); | |
c65b1445 DG |
254 | static int resp_readcap16(struct scsi_cmnd * SCpnt, |
255 | struct sdebug_dev_info * devip); | |
256 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, | |
1da177e4 | 257 | struct sdebug_dev_info * devip); |
c65b1445 DG |
258 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, |
259 | struct sdebug_dev_info * devip); | |
260 | static int resp_log_sense(struct scsi_cmnd * scp, | |
261 | struct sdebug_dev_info * devip); | |
262 | static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, | |
263 | unsigned int num, struct sdebug_dev_info * devip); | |
264 | static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, | |
265 | unsigned int num, struct sdebug_dev_info * devip); | |
1da177e4 LT |
266 | static int resp_report_luns(struct scsi_cmnd * SCpnt, |
267 | struct sdebug_dev_info * devip); | |
268 | static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, | |
269 | int arr_len); | |
270 | static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, | |
271 | int max_arr_len); | |
272 | static void timer_intr_handler(unsigned long); | |
273 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev); | |
274 | static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, | |
275 | int asc, int asq); | |
c65b1445 DG |
276 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
277 | struct sdebug_dev_info * devip); | |
1da177e4 LT |
278 | static int schedule_resp(struct scsi_cmnd * cmnd, |
279 | struct sdebug_dev_info * devip, | |
280 | done_funct_t done, int scsi_result, int delta_jiff); | |
281 | static void __init sdebug_build_parts(unsigned char * ramp); | |
282 | static void __init init_all_queued(void); | |
283 | static void stop_all_queued(void); | |
284 | static int stop_queued_cmnd(struct scsi_cmnd * cmnd); | |
c65b1445 DG |
285 | static int inquiry_evpd_83(unsigned char * arr, int target_dev_id, |
286 | int dev_id_num, const char * dev_id_str, | |
287 | int dev_id_str_len); | |
288 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id); | |
6ecaff7f | 289 | static int do_create_driverfs_files(void); |
1da177e4 LT |
290 | static void do_remove_driverfs_files(void); |
291 | ||
292 | static int sdebug_add_adapter(void); | |
293 | static void sdebug_remove_adapter(void); | |
294 | static void sdebug_max_tgts_luns(void); | |
295 | ||
296 | static struct device pseudo_primary; | |
297 | static struct bus_type pseudo_lld_bus; | |
298 | ||
299 | ||
300 | static | |
301 | int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done) | |
302 | { | |
303 | unsigned char *cmd = (unsigned char *) SCpnt->cmnd; | |
c65b1445 DG |
304 | int len, k, j; |
305 | unsigned int num; | |
306 | unsigned long long lba; | |
1da177e4 | 307 | int errsts = 0; |
c65b1445 | 308 | int target = SCpnt->device->id; |
1da177e4 LT |
309 | struct sdebug_dev_info * devip = NULL; |
310 | int inj_recovered = 0; | |
c65b1445 | 311 | int delay_override = 0; |
1da177e4 LT |
312 | |
313 | if (done == NULL) | |
314 | return 0; /* assume mid level reprocessing command */ | |
315 | ||
c65b1445 | 316 | SCpnt->resid = 0; |
1da177e4 LT |
317 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { |
318 | printk(KERN_INFO "scsi_debug: cmd "); | |
c65b1445 | 319 | for (k = 0, len = SCpnt->cmd_len; k < len; ++k) |
1da177e4 LT |
320 | printk("%02x ", (int)cmd[k]); |
321 | printk("\n"); | |
322 | } | |
323 | if(target == sdebug_driver_template.this_id) { | |
324 | printk(KERN_INFO "scsi_debug: initiator's id used as " | |
325 | "target!\n"); | |
326 | return schedule_resp(SCpnt, NULL, done, | |
327 | DID_NO_CONNECT << 16, 0); | |
328 | } | |
329 | ||
c65b1445 DG |
330 | if ((SCpnt->device->lun >= scsi_debug_max_luns) && |
331 | (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) | |
1da177e4 LT |
332 | return schedule_resp(SCpnt, NULL, done, |
333 | DID_NO_CONNECT << 16, 0); | |
334 | devip = devInfoReg(SCpnt->device); | |
335 | if (NULL == devip) | |
336 | return schedule_resp(SCpnt, NULL, done, | |
337 | DID_NO_CONNECT << 16, 0); | |
338 | ||
339 | if ((scsi_debug_every_nth != 0) && | |
340 | (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { | |
341 | scsi_debug_cmnd_count = 0; | |
342 | if (scsi_debug_every_nth < -1) | |
343 | scsi_debug_every_nth = -1; | |
344 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) | |
345 | return 0; /* ignore command causing timeout */ | |
346 | else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) | |
347 | inj_recovered = 1; /* to reads and writes below */ | |
348 | } | |
349 | ||
c65b1445 DG |
350 | if (devip->wlun) { |
351 | switch (*cmd) { | |
352 | case INQUIRY: | |
353 | case REQUEST_SENSE: | |
354 | case TEST_UNIT_READY: | |
355 | case REPORT_LUNS: | |
356 | break; /* only allowable wlun commands */ | |
357 | default: | |
358 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
359 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x " | |
360 | "not supported for wlun\n", *cmd); | |
361 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
362 | INVALID_OPCODE, 0); | |
363 | errsts = check_condition_result; | |
364 | return schedule_resp(SCpnt, devip, done, errsts, | |
365 | 0); | |
366 | } | |
367 | } | |
368 | ||
1da177e4 LT |
369 | switch (*cmd) { |
370 | case INQUIRY: /* mandatory, ignore unit attention */ | |
c65b1445 | 371 | delay_override = 1; |
1da177e4 LT |
372 | errsts = resp_inquiry(SCpnt, target, devip); |
373 | break; | |
374 | case REQUEST_SENSE: /* mandatory, ignore unit attention */ | |
c65b1445 | 375 | delay_override = 1; |
1da177e4 LT |
376 | errsts = resp_requests(SCpnt, devip); |
377 | break; | |
378 | case REZERO_UNIT: /* actually this is REWIND for SSC */ | |
379 | case START_STOP: | |
c65b1445 | 380 | errsts = resp_start_stop(SCpnt, devip); |
1da177e4 LT |
381 | break; |
382 | case ALLOW_MEDIUM_REMOVAL: | |
c65b1445 | 383 | if ((errsts = check_readiness(SCpnt, 1, devip))) |
1da177e4 LT |
384 | break; |
385 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
386 | printk(KERN_INFO "scsi_debug: Medium removal %s\n", | |
387 | cmd[4] ? "inhibited" : "enabled"); | |
388 | break; | |
389 | case SEND_DIAGNOSTIC: /* mandatory */ | |
c65b1445 | 390 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
391 | break; |
392 | case TEST_UNIT_READY: /* mandatory */ | |
c65b1445 DG |
393 | delay_override = 1; |
394 | errsts = check_readiness(SCpnt, 0, devip); | |
1da177e4 LT |
395 | break; |
396 | case RESERVE: | |
c65b1445 | 397 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
398 | break; |
399 | case RESERVE_10: | |
c65b1445 | 400 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
401 | break; |
402 | case RELEASE: | |
c65b1445 | 403 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
404 | break; |
405 | case RELEASE_10: | |
c65b1445 | 406 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
407 | break; |
408 | case READ_CAPACITY: | |
409 | errsts = resp_readcap(SCpnt, devip); | |
410 | break; | |
c65b1445 DG |
411 | case SERVICE_ACTION_IN: |
412 | if (SAI_READ_CAPACITY_16 != cmd[1]) { | |
413 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
414 | INVALID_OPCODE, 0); | |
415 | errsts = check_condition_result; | |
416 | break; | |
417 | } | |
418 | errsts = resp_readcap16(SCpnt, devip); | |
419 | break; | |
1da177e4 LT |
420 | case READ_16: |
421 | case READ_12: | |
422 | case READ_10: | |
423 | case READ_6: | |
c65b1445 | 424 | if ((errsts = check_readiness(SCpnt, 0, devip))) |
1da177e4 | 425 | break; |
1da177e4 | 426 | if ((*cmd) == READ_16) { |
c65b1445 DG |
427 | for (lba = 0, j = 0; j < 8; ++j) { |
428 | if (j > 0) | |
429 | lba <<= 8; | |
430 | lba += cmd[2 + j]; | |
431 | } | |
1da177e4 LT |
432 | num = cmd[13] + (cmd[12] << 8) + |
433 | (cmd[11] << 16) + (cmd[10] << 24); | |
434 | } else if ((*cmd) == READ_12) { | |
c65b1445 | 435 | lba = cmd[5] + (cmd[4] << 8) + |
1da177e4 LT |
436 | (cmd[3] << 16) + (cmd[2] << 24); |
437 | num = cmd[9] + (cmd[8] << 8) + | |
438 | (cmd[7] << 16) + (cmd[6] << 24); | |
439 | } else if ((*cmd) == READ_10) { | |
c65b1445 | 440 | lba = cmd[5] + (cmd[4] << 8) + |
1da177e4 LT |
441 | (cmd[3] << 16) + (cmd[2] << 24); |
442 | num = cmd[8] + (cmd[7] << 8); | |
c65b1445 DG |
443 | } else { /* READ (6) */ |
444 | lba = cmd[3] + (cmd[2] << 8) + | |
1da177e4 | 445 | ((cmd[1] & 0x1f) << 16); |
c65b1445 | 446 | num = (0 == cmd[4]) ? 256 : cmd[4]; |
1da177e4 | 447 | } |
c65b1445 | 448 | errsts = resp_read(SCpnt, lba, num, devip); |
1da177e4 LT |
449 | if (inj_recovered && (0 == errsts)) { |
450 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
c65b1445 | 451 | THRESHOLD_EXCEEDED, 0); |
1da177e4 LT |
452 | errsts = check_condition_result; |
453 | } | |
454 | break; | |
455 | case REPORT_LUNS: /* mandatory, ignore unit attention */ | |
c65b1445 | 456 | delay_override = 1; |
1da177e4 LT |
457 | errsts = resp_report_luns(SCpnt, devip); |
458 | break; | |
459 | case VERIFY: /* 10 byte SBC-2 command */ | |
c65b1445 | 460 | errsts = check_readiness(SCpnt, 0, devip); |
1da177e4 LT |
461 | break; |
462 | case WRITE_16: | |
463 | case WRITE_12: | |
464 | case WRITE_10: | |
465 | case WRITE_6: | |
c65b1445 | 466 | if ((errsts = check_readiness(SCpnt, 0, devip))) |
1da177e4 | 467 | break; |
1da177e4 | 468 | if ((*cmd) == WRITE_16) { |
c65b1445 DG |
469 | for (lba = 0, j = 0; j < 8; ++j) { |
470 | if (j > 0) | |
471 | lba <<= 8; | |
472 | lba += cmd[2 + j]; | |
473 | } | |
1da177e4 LT |
474 | num = cmd[13] + (cmd[12] << 8) + |
475 | (cmd[11] << 16) + (cmd[10] << 24); | |
476 | } else if ((*cmd) == WRITE_12) { | |
c65b1445 | 477 | lba = cmd[5] + (cmd[4] << 8) + |
1da177e4 LT |
478 | (cmd[3] << 16) + (cmd[2] << 24); |
479 | num = cmd[9] + (cmd[8] << 8) + | |
480 | (cmd[7] << 16) + (cmd[6] << 24); | |
481 | } else if ((*cmd) == WRITE_10) { | |
c65b1445 | 482 | lba = cmd[5] + (cmd[4] << 8) + |
1da177e4 LT |
483 | (cmd[3] << 16) + (cmd[2] << 24); |
484 | num = cmd[8] + (cmd[7] << 8); | |
c65b1445 DG |
485 | } else { /* WRITE (6) */ |
486 | lba = cmd[3] + (cmd[2] << 8) + | |
1da177e4 | 487 | ((cmd[1] & 0x1f) << 16); |
c65b1445 | 488 | num = (0 == cmd[4]) ? 256 : cmd[4]; |
1da177e4 | 489 | } |
c65b1445 | 490 | errsts = resp_write(SCpnt, lba, num, devip); |
1da177e4 LT |
491 | if (inj_recovered && (0 == errsts)) { |
492 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
c65b1445 | 493 | THRESHOLD_EXCEEDED, 0); |
1da177e4 LT |
494 | errsts = check_condition_result; |
495 | } | |
496 | break; | |
497 | case MODE_SENSE: | |
498 | case MODE_SENSE_10: | |
499 | errsts = resp_mode_sense(SCpnt, target, devip); | |
500 | break; | |
c65b1445 DG |
501 | case MODE_SELECT: |
502 | errsts = resp_mode_select(SCpnt, 1, devip); | |
503 | break; | |
504 | case MODE_SELECT_10: | |
505 | errsts = resp_mode_select(SCpnt, 0, devip); | |
506 | break; | |
507 | case LOG_SENSE: | |
508 | errsts = resp_log_sense(SCpnt, devip); | |
509 | break; | |
1da177e4 | 510 | case SYNCHRONIZE_CACHE: |
c65b1445 DG |
511 | delay_override = 1; |
512 | errsts = check_readiness(SCpnt, 0, devip); | |
1da177e4 LT |
513 | break; |
514 | default: | |
515 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
516 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " | |
517 | "supported\n", *cmd); | |
c65b1445 | 518 | if ((errsts = check_readiness(SCpnt, 1, devip))) |
1da177e4 LT |
519 | break; /* Unit attention takes precedence */ |
520 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); | |
521 | errsts = check_condition_result; | |
522 | break; | |
523 | } | |
c65b1445 DG |
524 | return schedule_resp(SCpnt, devip, done, errsts, |
525 | (delay_override ? 0 : scsi_debug_delay)); | |
1da177e4 LT |
526 | } |
527 | ||
528 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) | |
529 | { | |
530 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
531 | printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); | |
532 | } | |
533 | return -EINVAL; | |
534 | /* return -ENOTTY; // correct return but upsets fdisk */ | |
535 | } | |
536 | ||
c65b1445 DG |
537 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
538 | struct sdebug_dev_info * devip) | |
1da177e4 LT |
539 | { |
540 | if (devip->reset) { | |
541 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
542 | printk(KERN_INFO "scsi_debug: Reporting Unit " | |
543 | "attention: power on reset\n"); | |
544 | devip->reset = 0; | |
545 | mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); | |
546 | return check_condition_result; | |
547 | } | |
c65b1445 DG |
548 | if ((0 == reset_only) && devip->stopped) { |
549 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
550 | printk(KERN_INFO "scsi_debug: Reporting Not " | |
551 | "ready: initializing command required\n"); | |
552 | mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, | |
553 | 0x2); | |
554 | return check_condition_result; | |
555 | } | |
1da177e4 LT |
556 | return 0; |
557 | } | |
558 | ||
559 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ | |
560 | static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, | |
561 | int arr_len) | |
562 | { | |
563 | int k, req_len, act_len, len, active; | |
564 | void * kaddr; | |
565 | void * kaddr_off; | |
566 | struct scatterlist * sgpnt; | |
567 | ||
568 | if (0 == scp->request_bufflen) | |
569 | return 0; | |
570 | if (NULL == scp->request_buffer) | |
571 | return (DID_ERROR << 16); | |
572 | if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) || | |
573 | (scp->sc_data_direction == DMA_FROM_DEVICE))) | |
574 | return (DID_ERROR << 16); | |
575 | if (0 == scp->use_sg) { | |
576 | req_len = scp->request_bufflen; | |
577 | act_len = (req_len < arr_len) ? req_len : arr_len; | |
578 | memcpy(scp->request_buffer, arr, act_len); | |
c65b1445 DG |
579 | if (scp->resid) |
580 | scp->resid -= act_len; | |
581 | else | |
582 | scp->resid = req_len - act_len; | |
1da177e4 LT |
583 | return 0; |
584 | } | |
585 | sgpnt = (struct scatterlist *)scp->request_buffer; | |
586 | active = 1; | |
587 | for (k = 0, req_len = 0, act_len = 0; k < scp->use_sg; ++k, ++sgpnt) { | |
588 | if (active) { | |
589 | kaddr = (unsigned char *) | |
590 | kmap_atomic(sgpnt->page, KM_USER0); | |
591 | if (NULL == kaddr) | |
592 | return (DID_ERROR << 16); | |
593 | kaddr_off = (unsigned char *)kaddr + sgpnt->offset; | |
594 | len = sgpnt->length; | |
595 | if ((req_len + len) > arr_len) { | |
596 | active = 0; | |
597 | len = arr_len - req_len; | |
598 | } | |
599 | memcpy(kaddr_off, arr + req_len, len); | |
600 | kunmap_atomic(kaddr, KM_USER0); | |
601 | act_len += len; | |
602 | } | |
603 | req_len += sgpnt->length; | |
604 | } | |
c65b1445 DG |
605 | if (scp->resid) |
606 | scp->resid -= act_len; | |
607 | else | |
608 | scp->resid = req_len - act_len; | |
1da177e4 LT |
609 | return 0; |
610 | } | |
611 | ||
612 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ | |
613 | static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, | |
614 | int max_arr_len) | |
615 | { | |
616 | int k, req_len, len, fin; | |
617 | void * kaddr; | |
618 | void * kaddr_off; | |
619 | struct scatterlist * sgpnt; | |
620 | ||
621 | if (0 == scp->request_bufflen) | |
622 | return 0; | |
623 | if (NULL == scp->request_buffer) | |
624 | return -1; | |
625 | if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) || | |
626 | (scp->sc_data_direction == DMA_TO_DEVICE))) | |
627 | return -1; | |
628 | if (0 == scp->use_sg) { | |
629 | req_len = scp->request_bufflen; | |
630 | len = (req_len < max_arr_len) ? req_len : max_arr_len; | |
631 | memcpy(arr, scp->request_buffer, len); | |
632 | return len; | |
633 | } | |
634 | sgpnt = (struct scatterlist *)scp->request_buffer; | |
635 | for (k = 0, req_len = 0, fin = 0; k < scp->use_sg; ++k, ++sgpnt) { | |
636 | kaddr = (unsigned char *)kmap_atomic(sgpnt->page, KM_USER0); | |
637 | if (NULL == kaddr) | |
638 | return -1; | |
639 | kaddr_off = (unsigned char *)kaddr + sgpnt->offset; | |
640 | len = sgpnt->length; | |
641 | if ((req_len + len) > max_arr_len) { | |
642 | len = max_arr_len - req_len; | |
643 | fin = 1; | |
644 | } | |
645 | memcpy(arr + req_len, kaddr_off, len); | |
646 | kunmap_atomic(kaddr, KM_USER0); | |
647 | if (fin) | |
648 | return req_len + len; | |
649 | req_len += sgpnt->length; | |
650 | } | |
651 | return req_len; | |
652 | } | |
653 | ||
654 | ||
655 | static const char * inq_vendor_id = "Linux "; | |
656 | static const char * inq_product_id = "scsi_debug "; | |
657 | static const char * inq_product_rev = "0004"; | |
658 | ||
c65b1445 DG |
659 | static int inquiry_evpd_83(unsigned char * arr, int target_dev_id, |
660 | int dev_id_num, const char * dev_id_str, | |
661 | int dev_id_str_len) | |
1da177e4 | 662 | { |
c65b1445 DG |
663 | int num, port_a; |
664 | char b[32]; | |
1da177e4 | 665 | |
c65b1445 | 666 | port_a = target_dev_id + 1; |
1da177e4 LT |
667 | /* T10 vendor identifier field format (faked) */ |
668 | arr[0] = 0x2; /* ASCII */ | |
669 | arr[1] = 0x1; | |
670 | arr[2] = 0x0; | |
671 | memcpy(&arr[4], inq_vendor_id, 8); | |
672 | memcpy(&arr[12], inq_product_id, 16); | |
673 | memcpy(&arr[28], dev_id_str, dev_id_str_len); | |
674 | num = 8 + 16 + dev_id_str_len; | |
675 | arr[3] = num; | |
676 | num += 4; | |
c65b1445 DG |
677 | if (dev_id_num >= 0) { |
678 | /* NAA-5, Logical unit identifier (binary) */ | |
679 | arr[num++] = 0x1; /* binary (not necessarily sas) */ | |
680 | arr[num++] = 0x3; /* PIV=0, lu, naa */ | |
681 | arr[num++] = 0x0; | |
682 | arr[num++] = 0x8; | |
683 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ | |
684 | arr[num++] = 0x33; | |
685 | arr[num++] = 0x33; | |
686 | arr[num++] = 0x30; | |
687 | arr[num++] = (dev_id_num >> 24); | |
688 | arr[num++] = (dev_id_num >> 16) & 0xff; | |
689 | arr[num++] = (dev_id_num >> 8) & 0xff; | |
690 | arr[num++] = dev_id_num & 0xff; | |
691 | /* Target relative port number */ | |
692 | arr[num++] = 0x61; /* proto=sas, binary */ | |
693 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ | |
694 | arr[num++] = 0x0; /* reserved */ | |
695 | arr[num++] = 0x4; /* length */ | |
696 | arr[num++] = 0x0; /* reserved */ | |
697 | arr[num++] = 0x0; /* reserved */ | |
698 | arr[num++] = 0x0; | |
699 | arr[num++] = 0x1; /* relative port A */ | |
700 | } | |
701 | /* NAA-5, Target port identifier */ | |
702 | arr[num++] = 0x61; /* proto=sas, binary */ | |
703 | arr[num++] = 0x93; /* piv=1, target port, naa */ | |
704 | arr[num++] = 0x0; | |
705 | arr[num++] = 0x8; | |
706 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
707 | arr[num++] = 0x22; | |
708 | arr[num++] = 0x22; | |
709 | arr[num++] = 0x20; | |
710 | arr[num++] = (port_a >> 24); | |
711 | arr[num++] = (port_a >> 16) & 0xff; | |
712 | arr[num++] = (port_a >> 8) & 0xff; | |
713 | arr[num++] = port_a & 0xff; | |
714 | /* NAA-5, Target device identifier */ | |
715 | arr[num++] = 0x61; /* proto=sas, binary */ | |
716 | arr[num++] = 0xa3; /* piv=1, target device, naa */ | |
717 | arr[num++] = 0x0; | |
718 | arr[num++] = 0x8; | |
719 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
720 | arr[num++] = 0x22; | |
721 | arr[num++] = 0x22; | |
722 | arr[num++] = 0x20; | |
723 | arr[num++] = (target_dev_id >> 24); | |
724 | arr[num++] = (target_dev_id >> 16) & 0xff; | |
725 | arr[num++] = (target_dev_id >> 8) & 0xff; | |
726 | arr[num++] = target_dev_id & 0xff; | |
727 | /* SCSI name string: Target device identifier */ | |
728 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ | |
729 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ | |
730 | arr[num++] = 0x0; | |
731 | arr[num++] = 24; | |
732 | memcpy(arr + num, "naa.52222220", 12); | |
733 | num += 12; | |
734 | snprintf(b, sizeof(b), "%08X", target_dev_id); | |
735 | memcpy(arr + num, b, 8); | |
736 | num += 8; | |
737 | memset(arr + num, 0, 4); | |
738 | num += 4; | |
739 | return num; | |
740 | } | |
741 | ||
742 | ||
743 | static unsigned char vpd84_data[] = { | |
744 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, | |
745 | 0x22,0x22,0x22,0x0,0xbb,0x1, | |
746 | 0x22,0x22,0x22,0x0,0xbb,0x2, | |
747 | }; | |
748 | ||
749 | static int inquiry_evpd_84(unsigned char * arr) | |
750 | { | |
751 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); | |
752 | return sizeof(vpd84_data); | |
753 | } | |
754 | ||
755 | static int inquiry_evpd_85(unsigned char * arr) | |
756 | { | |
757 | int num = 0; | |
758 | const char * na1 = "https://www.kernel.org/config"; | |
759 | const char * na2 = "http://www.kernel.org/log"; | |
760 | int plen, olen; | |
761 | ||
762 | arr[num++] = 0x1; /* lu, storage config */ | |
763 | arr[num++] = 0x0; /* reserved */ | |
764 | arr[num++] = 0x0; | |
765 | olen = strlen(na1); | |
766 | plen = olen + 1; | |
767 | if (plen % 4) | |
768 | plen = ((plen / 4) + 1) * 4; | |
769 | arr[num++] = plen; /* length, null termianted, padded */ | |
770 | memcpy(arr + num, na1, olen); | |
771 | memset(arr + num + olen, 0, plen - olen); | |
772 | num += plen; | |
773 | ||
774 | arr[num++] = 0x4; /* lu, logging */ | |
775 | arr[num++] = 0x0; /* reserved */ | |
776 | arr[num++] = 0x0; | |
777 | olen = strlen(na2); | |
778 | plen = olen + 1; | |
779 | if (plen % 4) | |
780 | plen = ((plen / 4) + 1) * 4; | |
781 | arr[num++] = plen; /* length, null terminated, padded */ | |
782 | memcpy(arr + num, na2, olen); | |
783 | memset(arr + num + olen, 0, plen - olen); | |
784 | num += plen; | |
785 | ||
786 | return num; | |
787 | } | |
788 | ||
789 | /* SCSI ports VPD page */ | |
790 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) | |
791 | { | |
792 | int num = 0; | |
793 | int port_a, port_b; | |
794 | ||
795 | port_a = target_dev_id + 1; | |
796 | port_b = port_a + 1; | |
797 | arr[num++] = 0x0; /* reserved */ | |
798 | arr[num++] = 0x0; /* reserved */ | |
799 | arr[num++] = 0x0; | |
800 | arr[num++] = 0x1; /* relative port 1 (primary) */ | |
801 | memset(arr + num, 0, 6); | |
802 | num += 6; | |
803 | arr[num++] = 0x0; | |
804 | arr[num++] = 12; /* length tp descriptor */ | |
805 | /* naa-5 target port identifier (A) */ | |
806 | arr[num++] = 0x61; /* proto=sas, binary */ | |
807 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
808 | arr[num++] = 0x0; /* reserved */ | |
809 | arr[num++] = 0x8; /* length */ | |
810 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
811 | arr[num++] = 0x22; | |
812 | arr[num++] = 0x22; | |
813 | arr[num++] = 0x20; | |
814 | arr[num++] = (port_a >> 24); | |
815 | arr[num++] = (port_a >> 16) & 0xff; | |
816 | arr[num++] = (port_a >> 8) & 0xff; | |
817 | arr[num++] = port_a & 0xff; | |
818 | ||
819 | arr[num++] = 0x0; /* reserved */ | |
820 | arr[num++] = 0x0; /* reserved */ | |
821 | arr[num++] = 0x0; | |
822 | arr[num++] = 0x2; /* relative port 2 (secondary) */ | |
823 | memset(arr + num, 0, 6); | |
824 | num += 6; | |
825 | arr[num++] = 0x0; | |
826 | arr[num++] = 12; /* length tp descriptor */ | |
827 | /* naa-5 target port identifier (B) */ | |
828 | arr[num++] = 0x61; /* proto=sas, binary */ | |
829 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
830 | arr[num++] = 0x0; /* reserved */ | |
831 | arr[num++] = 0x8; /* length */ | |
832 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
833 | arr[num++] = 0x22; | |
834 | arr[num++] = 0x22; | |
835 | arr[num++] = 0x20; | |
836 | arr[num++] = (port_b >> 24); | |
837 | arr[num++] = (port_b >> 16) & 0xff; | |
838 | arr[num++] = (port_b >> 8) & 0xff; | |
839 | arr[num++] = port_b & 0xff; | |
840 | ||
841 | return num; | |
842 | } | |
843 | ||
844 | ||
845 | static unsigned char vpd89_data[] = { | |
846 | /* from 4th byte */ 0,0,0,0, | |
847 | 'l','i','n','u','x',' ',' ',' ', | |
848 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', | |
849 | '1','2','3','4', | |
850 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, | |
851 | 0xec,0,0,0, | |
852 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, | |
853 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, | |
854 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, | |
855 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, | |
856 | 0x53,0x41, | |
857 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
858 | 0x20,0x20, | |
859 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
860 | 0x10,0x80, | |
861 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, | |
862 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, | |
863 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, | |
864 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, | |
865 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, | |
866 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, | |
867 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, | |
868 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
869 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
870 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
871 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, | |
872 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, | |
873 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, | |
874 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, | |
875 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
876 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
877 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
878 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
879 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
880 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
881 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
882 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
883 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
884 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
885 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
886 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, | |
887 | }; | |
888 | ||
889 | static int inquiry_evpd_89(unsigned char * arr) | |
890 | { | |
891 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); | |
892 | return sizeof(vpd89_data); | |
893 | } | |
894 | ||
895 | ||
896 | static unsigned char vpdb0_data[] = { | |
897 | /* from 4th byte */ 0,0,0,4, | |
898 | 0,0,0x4,0, | |
899 | 0,0,0,64, | |
900 | }; | |
901 | ||
902 | static int inquiry_evpd_b0(unsigned char * arr) | |
903 | { | |
904 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); | |
905 | if (sdebug_store_sectors > 0x400) { | |
906 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; | |
907 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; | |
908 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; | |
909 | arr[7] = sdebug_store_sectors & 0xff; | |
910 | } | |
911 | return sizeof(vpdb0_data); | |
1da177e4 LT |
912 | } |
913 | ||
914 | ||
915 | #define SDEBUG_LONG_INQ_SZ 96 | |
c65b1445 | 916 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
1da177e4 LT |
917 | |
918 | static int resp_inquiry(struct scsi_cmnd * scp, int target, | |
919 | struct sdebug_dev_info * devip) | |
920 | { | |
921 | unsigned char pq_pdt; | |
922 | unsigned char arr[SDEBUG_MAX_INQ_ARR_SZ]; | |
923 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
c65b1445 | 924 | int alloc_len, n; |
1da177e4 LT |
925 | |
926 | alloc_len = (cmd[3] << 8) + cmd[4]; | |
927 | memset(arr, 0, SDEBUG_MAX_INQ_ARR_SZ); | |
c65b1445 DG |
928 | if (devip->wlun) |
929 | pq_pdt = 0x1e; /* present, wlun */ | |
930 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) | |
931 | pq_pdt = 0x7f; /* not present, no device type */ | |
932 | else | |
933 | pq_pdt = (scsi_debug_ptype & 0x1f); | |
1da177e4 LT |
934 | arr[0] = pq_pdt; |
935 | if (0x2 & cmd[1]) { /* CMDDT bit set */ | |
936 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
937 | 0); | |
938 | return check_condition_result; | |
939 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ | |
c65b1445 DG |
940 | int lu_id_num, target_dev_id, len; |
941 | char lu_id_str[6]; | |
942 | int host_no = devip->sdbg_host->shost->host_no; | |
1da177e4 | 943 | |
c65b1445 DG |
944 | lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
945 | (devip->target * 1000) + devip->lun); | |
946 | target_dev_id = ((host_no + 1) * 2000) + | |
947 | (devip->target * 1000) - 3; | |
948 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); | |
1da177e4 | 949 | if (0 == cmd[2]) { /* supported vital product data pages */ |
c65b1445 DG |
950 | arr[1] = cmd[2]; /*sanity */ |
951 | n = 4; | |
952 | arr[n++] = 0x0; /* this page */ | |
953 | arr[n++] = 0x80; /* unit serial number */ | |
954 | arr[n++] = 0x83; /* device identification */ | |
955 | arr[n++] = 0x84; /* software interface ident. */ | |
956 | arr[n++] = 0x85; /* management network addresses */ | |
957 | arr[n++] = 0x86; /* extended inquiry */ | |
958 | arr[n++] = 0x87; /* mode page policy */ | |
959 | arr[n++] = 0x88; /* SCSI ports */ | |
960 | arr[n++] = 0x89; /* ATA information */ | |
961 | arr[n++] = 0xb0; /* Block limits (SBC) */ | |
962 | arr[3] = n - 4; /* number of supported VPD pages */ | |
1da177e4 | 963 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
c65b1445 | 964 | arr[1] = cmd[2]; /*sanity */ |
1da177e4 | 965 | arr[3] = len; |
c65b1445 | 966 | memcpy(&arr[4], lu_id_str, len); |
1da177e4 | 967 | } else if (0x83 == cmd[2]) { /* device identification */ |
c65b1445 DG |
968 | arr[1] = cmd[2]; /*sanity */ |
969 | arr[3] = inquiry_evpd_83(&arr[4], target_dev_id, | |
970 | lu_id_num, lu_id_str, len); | |
971 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ | |
972 | arr[1] = cmd[2]; /*sanity */ | |
973 | arr[3] = inquiry_evpd_84(&arr[4]); | |
974 | } else if (0x85 == cmd[2]) { /* Management network addresses */ | |
975 | arr[1] = cmd[2]; /*sanity */ | |
976 | arr[3] = inquiry_evpd_85(&arr[4]); | |
977 | } else if (0x86 == cmd[2]) { /* extended inquiry */ | |
978 | arr[1] = cmd[2]; /*sanity */ | |
979 | arr[3] = 0x3c; /* number of following entries */ | |
980 | arr[4] = 0x0; /* no protection stuff */ | |
981 | arr[5] = 0x7; /* head of q, ordered + simple q's */ | |
982 | } else if (0x87 == cmd[2]) { /* mode page policy */ | |
983 | arr[1] = cmd[2]; /*sanity */ | |
984 | arr[3] = 0x8; /* number of following entries */ | |
985 | arr[4] = 0x2; /* disconnect-reconnect mp */ | |
986 | arr[6] = 0x80; /* mlus, shared */ | |
987 | arr[8] = 0x18; /* protocol specific lu */ | |
988 | arr[10] = 0x82; /* mlus, per initiator port */ | |
989 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ | |
990 | arr[1] = cmd[2]; /*sanity */ | |
991 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); | |
992 | } else if (0x89 == cmd[2]) { /* ATA information */ | |
993 | arr[1] = cmd[2]; /*sanity */ | |
994 | n = inquiry_evpd_89(&arr[4]); | |
995 | arr[2] = (n >> 8); | |
996 | arr[3] = (n & 0xff); | |
997 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ | |
998 | arr[1] = cmd[2]; /*sanity */ | |
999 | arr[3] = inquiry_evpd_b0(&arr[4]); | |
1da177e4 LT |
1000 | } else { |
1001 | /* Illegal request, invalid field in cdb */ | |
1002 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1003 | INVALID_FIELD_IN_CDB, 0); | |
1004 | return check_condition_result; | |
1005 | } | |
c65b1445 | 1006 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
1da177e4 | 1007 | return fill_from_dev_buffer(scp, arr, |
c65b1445 | 1008 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
1da177e4 LT |
1009 | } |
1010 | /* drops through here for a standard inquiry */ | |
1011 | arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */ | |
1012 | arr[2] = scsi_debug_scsi_level; | |
1013 | arr[3] = 2; /* response_data_format==2 */ | |
1014 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; | |
c65b1445 | 1015 | arr[6] = 0x10; /* claim: MultiP */ |
1da177e4 | 1016 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
c65b1445 | 1017 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
1da177e4 LT |
1018 | memcpy(&arr[8], inq_vendor_id, 8); |
1019 | memcpy(&arr[16], inq_product_id, 16); | |
1020 | memcpy(&arr[32], inq_product_rev, 4); | |
1021 | /* version descriptors (2 bytes each) follow */ | |
c65b1445 DG |
1022 | arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ |
1023 | arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ | |
1024 | n = 62; | |
1da177e4 | 1025 | if (scsi_debug_ptype == 0) { |
c65b1445 | 1026 | arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ |
1da177e4 | 1027 | } else if (scsi_debug_ptype == 1) { |
c65b1445 | 1028 | arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ |
1da177e4 | 1029 | } |
c65b1445 | 1030 | arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ |
1da177e4 LT |
1031 | return fill_from_dev_buffer(scp, arr, |
1032 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); | |
1033 | } | |
1034 | ||
1035 | static int resp_requests(struct scsi_cmnd * scp, | |
1036 | struct sdebug_dev_info * devip) | |
1037 | { | |
1038 | unsigned char * sbuff; | |
1039 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1040 | unsigned char arr[SDEBUG_SENSE_LEN]; | |
c65b1445 | 1041 | int want_dsense; |
1da177e4 LT |
1042 | int len = 18; |
1043 | ||
c65b1445 | 1044 | memset(arr, 0, sizeof(arr)); |
1da177e4 | 1045 | if (devip->reset == 1) |
c65b1445 DG |
1046 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
1047 | want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; | |
1da177e4 | 1048 | sbuff = devip->sense_buff; |
c65b1445 DG |
1049 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
1050 | if (want_dsense) { | |
1051 | arr[0] = 0x72; | |
1052 | arr[1] = 0x0; /* NO_SENSE in sense_key */ | |
1053 | arr[2] = THRESHOLD_EXCEEDED; | |
1054 | arr[3] = 0xff; /* TEST set and MRIE==6 */ | |
1055 | } else { | |
1056 | arr[0] = 0x70; | |
1057 | arr[2] = 0x0; /* NO_SENSE in sense_key */ | |
1058 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
1059 | arr[12] = THRESHOLD_EXCEEDED; | |
1060 | arr[13] = 0xff; /* TEST set and MRIE==6 */ | |
1061 | } | |
1062 | } else if (devip->stopped) { | |
1063 | if (want_dsense) { | |
1064 | arr[0] = 0x72; | |
1065 | arr[1] = 0x0; /* NO_SENSE in sense_key */ | |
1066 | arr[2] = LOW_POWER_COND_ON; | |
1067 | arr[3] = 0x0; /* TEST set and MRIE==6 */ | |
1068 | } else { | |
1069 | arr[0] = 0x70; | |
1070 | arr[2] = 0x0; /* NO_SENSE in sense_key */ | |
1071 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
1072 | arr[12] = LOW_POWER_COND_ON; | |
1073 | arr[13] = 0x0; /* TEST set and MRIE==6 */ | |
1074 | } | |
1075 | } else { | |
1da177e4 | 1076 | memcpy(arr, sbuff, SDEBUG_SENSE_LEN); |
c65b1445 DG |
1077 | if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
1078 | /* DESC bit set and sense_buff in fixed format */ | |
1079 | memset(arr, 0, sizeof(arr)); | |
1080 | arr[0] = 0x72; | |
1081 | arr[1] = sbuff[2]; /* sense key */ | |
1082 | arr[2] = sbuff[12]; /* asc */ | |
1083 | arr[3] = sbuff[13]; /* ascq */ | |
1084 | len = 8; | |
1085 | } | |
1086 | } | |
1087 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); | |
1da177e4 LT |
1088 | return fill_from_dev_buffer(scp, arr, len); |
1089 | } | |
1090 | ||
c65b1445 DG |
1091 | static int resp_start_stop(struct scsi_cmnd * scp, |
1092 | struct sdebug_dev_info * devip) | |
1093 | { | |
1094 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1095 | int power_cond, errsts, start; | |
1096 | ||
1097 | if ((errsts = check_readiness(scp, 1, devip))) | |
1098 | return errsts; | |
1099 | power_cond = (cmd[4] & 0xf0) >> 4; | |
1100 | if (power_cond) { | |
1101 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1102 | 0); | |
1103 | return check_condition_result; | |
1104 | } | |
1105 | start = cmd[4] & 1; | |
1106 | if (start == devip->stopped) | |
1107 | devip->stopped = !start; | |
1108 | return 0; | |
1109 | } | |
1110 | ||
1da177e4 LT |
1111 | #define SDEBUG_READCAP_ARR_SZ 8 |
1112 | static int resp_readcap(struct scsi_cmnd * scp, | |
1113 | struct sdebug_dev_info * devip) | |
1114 | { | |
1115 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; | |
c65b1445 | 1116 | unsigned int capac; |
1da177e4 LT |
1117 | int errsts; |
1118 | ||
c65b1445 | 1119 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 | 1120 | return errsts; |
c65b1445 DG |
1121 | /* following just in case virtual_gb changed */ |
1122 | if (scsi_debug_virtual_gb > 0) { | |
1123 | sdebug_capacity = 2048 * 1024; | |
1124 | sdebug_capacity *= scsi_debug_virtual_gb; | |
1125 | } else | |
1126 | sdebug_capacity = sdebug_store_sectors; | |
1da177e4 | 1127 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
c65b1445 DG |
1128 | if (sdebug_capacity < 0xffffffff) { |
1129 | capac = (unsigned int)sdebug_capacity - 1; | |
1130 | arr[0] = (capac >> 24); | |
1131 | arr[1] = (capac >> 16) & 0xff; | |
1132 | arr[2] = (capac >> 8) & 0xff; | |
1133 | arr[3] = capac & 0xff; | |
1134 | } else { | |
1135 | arr[0] = 0xff; | |
1136 | arr[1] = 0xff; | |
1137 | arr[2] = 0xff; | |
1138 | arr[3] = 0xff; | |
1139 | } | |
1da177e4 LT |
1140 | arr[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
1141 | arr[7] = SECT_SIZE_PER(target) & 0xff; | |
1142 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); | |
1143 | } | |
1144 | ||
c65b1445 DG |
1145 | #define SDEBUG_READCAP16_ARR_SZ 32 |
1146 | static int resp_readcap16(struct scsi_cmnd * scp, | |
1147 | struct sdebug_dev_info * devip) | |
1148 | { | |
1149 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1150 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; | |
1151 | unsigned long long capac; | |
1152 | int errsts, k, alloc_len; | |
1153 | ||
1154 | if ((errsts = check_readiness(scp, 1, devip))) | |
1155 | return errsts; | |
1156 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) | |
1157 | + cmd[13]); | |
1158 | /* following just in case virtual_gb changed */ | |
1159 | if (scsi_debug_virtual_gb > 0) { | |
1160 | sdebug_capacity = 2048 * 1024; | |
1161 | sdebug_capacity *= scsi_debug_virtual_gb; | |
1162 | } else | |
1163 | sdebug_capacity = sdebug_store_sectors; | |
1164 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); | |
1165 | capac = sdebug_capacity - 1; | |
1166 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1167 | arr[7 - k] = capac & 0xff; | |
1168 | arr[8] = (SECT_SIZE_PER(target) >> 24) & 0xff; | |
1169 | arr[9] = (SECT_SIZE_PER(target) >> 16) & 0xff; | |
1170 | arr[10] = (SECT_SIZE_PER(target) >> 8) & 0xff; | |
1171 | arr[11] = SECT_SIZE_PER(target) & 0xff; | |
1172 | return fill_from_dev_buffer(scp, arr, | |
1173 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); | |
1174 | } | |
1175 | ||
1da177e4 LT |
1176 | /* <<Following mode page info copied from ST318451LW>> */ |
1177 | ||
1178 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) | |
1179 | { /* Read-Write Error Recovery page for mode_sense */ | |
1180 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, | |
1181 | 5, 0, 0xff, 0xff}; | |
1182 | ||
1183 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); | |
1184 | if (1 == pcontrol) | |
1185 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); | |
1186 | return sizeof(err_recov_pg); | |
1187 | } | |
1188 | ||
1189 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) | |
1190 | { /* Disconnect-Reconnect page for mode_sense */ | |
1191 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, | |
1192 | 0, 0, 0, 0, 0, 0, 0, 0}; | |
1193 | ||
1194 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); | |
1195 | if (1 == pcontrol) | |
1196 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); | |
1197 | return sizeof(disconnect_pg); | |
1198 | } | |
1199 | ||
1200 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) | |
1201 | { /* Format device page for mode_sense */ | |
1202 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, | |
1203 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1204 | 0, 0, 0, 0, 0x40, 0, 0, 0}; | |
1205 | ||
1206 | memcpy(p, format_pg, sizeof(format_pg)); | |
1207 | p[10] = (sdebug_sectors_per >> 8) & 0xff; | |
1208 | p[11] = sdebug_sectors_per & 0xff; | |
1209 | p[12] = (SECT_SIZE >> 8) & 0xff; | |
1210 | p[13] = SECT_SIZE & 0xff; | |
1211 | if (DEV_REMOVEABLE(target)) | |
1212 | p[20] |= 0x20; /* should agree with INQUIRY */ | |
1213 | if (1 == pcontrol) | |
1214 | memset(p + 2, 0, sizeof(format_pg) - 2); | |
1215 | return sizeof(format_pg); | |
1216 | } | |
1217 | ||
1218 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) | |
1219 | { /* Caching page for mode_sense */ | |
1220 | unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
1221 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; | |
1222 | ||
1223 | memcpy(p, caching_pg, sizeof(caching_pg)); | |
1224 | if (1 == pcontrol) | |
1225 | memset(p + 2, 0, sizeof(caching_pg) - 2); | |
1226 | return sizeof(caching_pg); | |
1227 | } | |
1228 | ||
1229 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) | |
1230 | { /* Control mode page for mode_sense */ | |
c65b1445 DG |
1231 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
1232 | 0, 0, 0, 0}; | |
1233 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, | |
1da177e4 LT |
1234 | 0, 0, 0x2, 0x4b}; |
1235 | ||
1236 | if (scsi_debug_dsense) | |
1237 | ctrl_m_pg[2] |= 0x4; | |
c65b1445 DG |
1238 | else |
1239 | ctrl_m_pg[2] &= ~0x4; | |
1da177e4 LT |
1240 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
1241 | if (1 == pcontrol) | |
c65b1445 DG |
1242 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
1243 | else if (2 == pcontrol) | |
1244 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); | |
1da177e4 LT |
1245 | return sizeof(ctrl_m_pg); |
1246 | } | |
1247 | ||
c65b1445 | 1248 | |
1da177e4 LT |
1249 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
1250 | { /* Informational Exceptions control mode page for mode_sense */ | |
c65b1445 DG |
1251 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
1252 | 0, 0, 0x0, 0x0}; | |
1253 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
1254 | 0, 0, 0x0, 0x0}; | |
1255 | ||
1da177e4 LT |
1256 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
1257 | if (1 == pcontrol) | |
c65b1445 DG |
1258 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
1259 | else if (2 == pcontrol) | |
1260 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); | |
1da177e4 LT |
1261 | return sizeof(iec_m_pg); |
1262 | } | |
1263 | ||
c65b1445 DG |
1264 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
1265 | { /* SAS SSP mode page - short format for mode_sense */ | |
1266 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, | |
1267 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; | |
1268 | ||
1269 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); | |
1270 | if (1 == pcontrol) | |
1271 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); | |
1272 | return sizeof(sas_sf_m_pg); | |
1273 | } | |
1274 | ||
1275 | ||
1276 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, | |
1277 | int target_dev_id) | |
1278 | { /* SAS phy control and discover mode page for mode_sense */ | |
1279 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, | |
1280 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1281 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1282 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1283 | 0x2, 0, 0, 0, 0, 0, 0, 0, | |
1284 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1285 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1286 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1287 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1288 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1289 | 0x3, 0, 0, 0, 0, 0, 0, 0, | |
1290 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1291 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1292 | }; | |
1293 | int port_a, port_b; | |
1294 | ||
1295 | port_a = target_dev_id + 1; | |
1296 | port_b = port_a + 1; | |
1297 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); | |
1298 | p[20] = (port_a >> 24); | |
1299 | p[21] = (port_a >> 16) & 0xff; | |
1300 | p[22] = (port_a >> 8) & 0xff; | |
1301 | p[23] = port_a & 0xff; | |
1302 | p[48 + 20] = (port_b >> 24); | |
1303 | p[48 + 21] = (port_b >> 16) & 0xff; | |
1304 | p[48 + 22] = (port_b >> 8) & 0xff; | |
1305 | p[48 + 23] = port_b & 0xff; | |
1306 | if (1 == pcontrol) | |
1307 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); | |
1308 | return sizeof(sas_pcd_m_pg); | |
1309 | } | |
1310 | ||
1311 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) | |
1312 | { /* SAS SSP shared protocol specific port mode subpage */ | |
1313 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, | |
1314 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1315 | }; | |
1316 | ||
1317 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); | |
1318 | if (1 == pcontrol) | |
1319 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); | |
1320 | return sizeof(sas_sha_m_pg); | |
1321 | } | |
1322 | ||
1da177e4 LT |
1323 | #define SDEBUG_MAX_MSENSE_SZ 256 |
1324 | ||
1325 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, | |
1326 | struct sdebug_dev_info * devip) | |
1327 | { | |
1328 | unsigned char dbd; | |
1329 | int pcontrol, pcode, subpcode; | |
1330 | unsigned char dev_spec; | |
c65b1445 | 1331 | int alloc_len, msense_6, offset, len, errsts, target_dev_id; |
1da177e4 LT |
1332 | unsigned char * ap; |
1333 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; | |
1334 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1335 | ||
c65b1445 | 1336 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 LT |
1337 | return errsts; |
1338 | dbd = cmd[1] & 0x8; | |
1339 | pcontrol = (cmd[2] & 0xc0) >> 6; | |
1340 | pcode = cmd[2] & 0x3f; | |
1341 | subpcode = cmd[3]; | |
1342 | msense_6 = (MODE_SENSE == cmd[0]); | |
1343 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); | |
1344 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); | |
1345 | if (0x3 == pcontrol) { /* Saving values not supported */ | |
1346 | mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, | |
1347 | 0); | |
1348 | return check_condition_result; | |
1349 | } | |
c65b1445 DG |
1350 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
1351 | (devip->target * 1000) - 3; | |
1da177e4 LT |
1352 | dev_spec = DEV_READONLY(target) ? 0x80 : 0x0; |
1353 | if (msense_6) { | |
1354 | arr[2] = dev_spec; | |
1355 | offset = 4; | |
1356 | } else { | |
1357 | arr[3] = dev_spec; | |
1358 | offset = 8; | |
1359 | } | |
1360 | ap = arr + offset; | |
1361 | ||
c65b1445 DG |
1362 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
1363 | /* TODO: Control Extension page */ | |
1da177e4 LT |
1364 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1365 | 0); | |
1366 | return check_condition_result; | |
1367 | } | |
1368 | switch (pcode) { | |
1369 | case 0x1: /* Read-Write error recovery page, direct access */ | |
1370 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1371 | offset += len; | |
1372 | break; | |
1373 | case 0x2: /* Disconnect-Reconnect page, all devices */ | |
1374 | len = resp_disconnect_pg(ap, pcontrol, target); | |
1375 | offset += len; | |
1376 | break; | |
1377 | case 0x3: /* Format device page, direct access */ | |
1378 | len = resp_format_pg(ap, pcontrol, target); | |
1379 | offset += len; | |
1380 | break; | |
1381 | case 0x8: /* Caching page, direct access */ | |
1382 | len = resp_caching_pg(ap, pcontrol, target); | |
1383 | offset += len; | |
1384 | break; | |
1385 | case 0xa: /* Control Mode page, all devices */ | |
1386 | len = resp_ctrl_m_pg(ap, pcontrol, target); | |
1387 | offset += len; | |
1388 | break; | |
c65b1445 DG |
1389 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
1390 | if ((subpcode > 0x2) && (subpcode < 0xff)) { | |
1391 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1392 | INVALID_FIELD_IN_CDB, 0); | |
1393 | return check_condition_result; | |
1394 | } | |
1395 | len = 0; | |
1396 | if ((0x0 == subpcode) || (0xff == subpcode)) | |
1397 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1398 | if ((0x1 == subpcode) || (0xff == subpcode)) | |
1399 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, | |
1400 | target_dev_id); | |
1401 | if ((0x2 == subpcode) || (0xff == subpcode)) | |
1402 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1403 | offset += len; | |
1404 | break; | |
1da177e4 LT |
1405 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
1406 | len = resp_iec_m_pg(ap, pcontrol, target); | |
1407 | offset += len; | |
1408 | break; | |
1409 | case 0x3f: /* Read all Mode pages */ | |
c65b1445 DG |
1410 | if ((0 == subpcode) || (0xff == subpcode)) { |
1411 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1412 | len += resp_disconnect_pg(ap + len, pcontrol, target); | |
1413 | len += resp_format_pg(ap + len, pcontrol, target); | |
1414 | len += resp_caching_pg(ap + len, pcontrol, target); | |
1415 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); | |
1416 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1417 | if (0xff == subpcode) { | |
1418 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, | |
1419 | target, target_dev_id); | |
1420 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1421 | } | |
1422 | len += resp_iec_m_pg(ap + len, pcontrol, target); | |
1423 | } else { | |
1424 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1425 | INVALID_FIELD_IN_CDB, 0); | |
1426 | return check_condition_result; | |
1427 | } | |
1da177e4 LT |
1428 | offset += len; |
1429 | break; | |
1430 | default: | |
1431 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1432 | 0); | |
1433 | return check_condition_result; | |
1434 | } | |
1435 | if (msense_6) | |
1436 | arr[0] = offset - 1; | |
1437 | else { | |
1438 | arr[0] = ((offset - 2) >> 8) & 0xff; | |
1439 | arr[1] = (offset - 2) & 0xff; | |
1440 | } | |
1441 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); | |
1442 | } | |
1443 | ||
c65b1445 DG |
1444 | #define SDEBUG_MAX_MSELECT_SZ 512 |
1445 | ||
1446 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, | |
1447 | struct sdebug_dev_info * devip) | |
1448 | { | |
1449 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; | |
1450 | int param_len, res, errsts, mpage; | |
1451 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; | |
1452 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1453 | ||
1454 | if ((errsts = check_readiness(scp, 1, devip))) | |
1455 | return errsts; | |
1456 | memset(arr, 0, sizeof(arr)); | |
1457 | pf = cmd[1] & 0x10; | |
1458 | sp = cmd[1] & 0x1; | |
1459 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); | |
1460 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { | |
1461 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1462 | INVALID_FIELD_IN_CDB, 0); | |
1463 | return check_condition_result; | |
1464 | } | |
1465 | res = fetch_to_dev_buffer(scp, arr, param_len); | |
1466 | if (-1 == res) | |
1467 | return (DID_ERROR << 16); | |
1468 | else if ((res < param_len) && | |
1469 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
1470 | printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " | |
1471 | " IO sent=%d bytes\n", param_len, res); | |
1472 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); | |
1473 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); | |
1474 | if ((md_len > 2) || (0 != bd_len)) { | |
1475 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1476 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1477 | return check_condition_result; | |
1478 | } | |
1479 | off = bd_len + (mselect6 ? 4 : 8); | |
1480 | mpage = arr[off] & 0x3f; | |
1481 | ps = !!(arr[off] & 0x80); | |
1482 | if (ps) { | |
1483 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1484 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1485 | return check_condition_result; | |
1486 | } | |
1487 | spf = !!(arr[off] & 0x40); | |
1488 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : | |
1489 | (arr[off + 1] + 2); | |
1490 | if ((pg_len + off) > param_len) { | |
1491 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1492 | PARAMETER_LIST_LENGTH_ERR, 0); | |
1493 | return check_condition_result; | |
1494 | } | |
1495 | switch (mpage) { | |
1496 | case 0xa: /* Control Mode page */ | |
1497 | if (ctrl_m_pg[1] == arr[off + 1]) { | |
1498 | memcpy(ctrl_m_pg + 2, arr + off + 2, | |
1499 | sizeof(ctrl_m_pg) - 2); | |
1500 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); | |
1501 | return 0; | |
1502 | } | |
1503 | break; | |
1504 | case 0x1c: /* Informational Exceptions Mode page */ | |
1505 | if (iec_m_pg[1] == arr[off + 1]) { | |
1506 | memcpy(iec_m_pg + 2, arr + off + 2, | |
1507 | sizeof(iec_m_pg) - 2); | |
1508 | return 0; | |
1509 | } | |
1510 | break; | |
1511 | default: | |
1512 | break; | |
1513 | } | |
1514 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1515 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1516 | return check_condition_result; | |
1517 | } | |
1518 | ||
1519 | static int resp_temp_l_pg(unsigned char * arr) | |
1520 | { | |
1521 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, | |
1522 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, | |
1523 | }; | |
1524 | ||
1525 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); | |
1526 | return sizeof(temp_l_pg); | |
1527 | } | |
1528 | ||
1529 | static int resp_ie_l_pg(unsigned char * arr) | |
1530 | { | |
1531 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, | |
1532 | }; | |
1533 | ||
1534 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); | |
1535 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ | |
1536 | arr[4] = THRESHOLD_EXCEEDED; | |
1537 | arr[5] = 0xff; | |
1538 | } | |
1539 | return sizeof(ie_l_pg); | |
1540 | } | |
1541 | ||
1542 | #define SDEBUG_MAX_LSENSE_SZ 512 | |
1543 | ||
1544 | static int resp_log_sense(struct scsi_cmnd * scp, | |
1545 | struct sdebug_dev_info * devip) | |
1546 | { | |
1547 | int ppc, sp, pcontrol, pcode, alloc_len, errsts, len, n; | |
1548 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; | |
1549 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1550 | ||
1551 | if ((errsts = check_readiness(scp, 1, devip))) | |
1552 | return errsts; | |
1553 | memset(arr, 0, sizeof(arr)); | |
1554 | ppc = cmd[1] & 0x2; | |
1555 | sp = cmd[1] & 0x1; | |
1556 | if (ppc || sp) { | |
1557 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1558 | INVALID_FIELD_IN_CDB, 0); | |
1559 | return check_condition_result; | |
1560 | } | |
1561 | pcontrol = (cmd[2] & 0xc0) >> 6; | |
1562 | pcode = cmd[2] & 0x3f; | |
1563 | alloc_len = (cmd[7] << 8) + cmd[8]; | |
1564 | arr[0] = pcode; | |
1565 | switch (pcode) { | |
1566 | case 0x0: /* Supported log pages log page */ | |
1567 | n = 4; | |
1568 | arr[n++] = 0x0; /* this page */ | |
1569 | arr[n++] = 0xd; /* Temperature */ | |
1570 | arr[n++] = 0x2f; /* Informational exceptions */ | |
1571 | arr[3] = n - 4; | |
1572 | break; | |
1573 | case 0xd: /* Temperature log page */ | |
1574 | arr[3] = resp_temp_l_pg(arr + 4); | |
1575 | break; | |
1576 | case 0x2f: /* Informational exceptions log page */ | |
1577 | arr[3] = resp_ie_l_pg(arr + 4); | |
1578 | break; | |
1579 | default: | |
1580 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1581 | INVALID_FIELD_IN_CDB, 0); | |
1582 | return check_condition_result; | |
1583 | } | |
1584 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); | |
1585 | return fill_from_dev_buffer(scp, arr, | |
1586 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); | |
1587 | } | |
1588 | ||
1589 | static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, | |
1590 | unsigned int num, struct sdebug_dev_info * devip) | |
1da177e4 LT |
1591 | { |
1592 | unsigned long iflags; | |
c65b1445 DG |
1593 | unsigned int block, from_bottom; |
1594 | unsigned long long u; | |
1da177e4 LT |
1595 | int ret; |
1596 | ||
c65b1445 | 1597 | if (lba + num > sdebug_capacity) { |
1da177e4 LT |
1598 | mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, |
1599 | 0); | |
1600 | return check_condition_result; | |
1601 | } | |
c65b1445 DG |
1602 | /* transfer length excessive (tie in to block limits VPD page) */ |
1603 | if (num > sdebug_store_sectors) { | |
1604 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1605 | 0); | |
1606 | return check_condition_result; | |
1607 | } | |
1da177e4 | 1608 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
c65b1445 DG |
1609 | (lba <= OPT_MEDIUM_ERR_ADDR) && |
1610 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { | |
1611 | /* claim unrecoverable read error */ | |
1da177e4 LT |
1612 | mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, |
1613 | 0); | |
c65b1445 DG |
1614 | /* set info field and valid bit for fixed descriptor */ |
1615 | if (0x70 == (devip->sense_buff[0] & 0x7f)) { | |
1616 | devip->sense_buff[0] |= 0x80; /* Valid bit */ | |
1617 | ret = OPT_MEDIUM_ERR_ADDR; | |
1618 | devip->sense_buff[3] = (ret >> 24) & 0xff; | |
1619 | devip->sense_buff[4] = (ret >> 16) & 0xff; | |
1620 | devip->sense_buff[5] = (ret >> 8) & 0xff; | |
1621 | devip->sense_buff[6] = ret & 0xff; | |
1622 | } | |
1da177e4 LT |
1623 | return check_condition_result; |
1624 | } | |
1625 | read_lock_irqsave(&atomic_rw, iflags); | |
c65b1445 DG |
1626 | if ((lba + num) <= sdebug_store_sectors) |
1627 | ret = fill_from_dev_buffer(SCpnt, | |
1628 | fake_storep + (lba * SECT_SIZE), | |
1629 | num * SECT_SIZE); | |
1630 | else { | |
1631 | /* modulo when one arg is 64 bits needs do_div() */ | |
1632 | u = lba; | |
1633 | block = do_div(u, sdebug_store_sectors); | |
1634 | from_bottom = 0; | |
1635 | if ((block + num) > sdebug_store_sectors) | |
1636 | from_bottom = (block + num) - sdebug_store_sectors; | |
1637 | ret = fill_from_dev_buffer(SCpnt, | |
1638 | fake_storep + (block * SECT_SIZE), | |
1639 | (num - from_bottom) * SECT_SIZE); | |
1640 | if ((0 == ret) && (from_bottom > 0)) | |
1641 | ret = fill_from_dev_buffer(SCpnt, fake_storep, | |
1642 | from_bottom * SECT_SIZE); | |
1643 | } | |
1da177e4 LT |
1644 | read_unlock_irqrestore(&atomic_rw, iflags); |
1645 | return ret; | |
1646 | } | |
1647 | ||
c65b1445 DG |
1648 | static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, |
1649 | unsigned int num, struct sdebug_dev_info * devip) | |
1da177e4 LT |
1650 | { |
1651 | unsigned long iflags; | |
c65b1445 DG |
1652 | unsigned int block, to_bottom; |
1653 | unsigned long long u; | |
1da177e4 LT |
1654 | int res; |
1655 | ||
c65b1445 | 1656 | if (lba + num > sdebug_capacity) { |
1da177e4 LT |
1657 | mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, |
1658 | 0); | |
1659 | return check_condition_result; | |
1660 | } | |
c65b1445 DG |
1661 | /* transfer length excessive (tie in to block limits VPD page) */ |
1662 | if (num > sdebug_store_sectors) { | |
1663 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1664 | 0); | |
1665 | return check_condition_result; | |
1666 | } | |
1da177e4 LT |
1667 | |
1668 | write_lock_irqsave(&atomic_rw, iflags); | |
c65b1445 DG |
1669 | if ((lba + num) <= sdebug_store_sectors) |
1670 | res = fetch_to_dev_buffer(SCpnt, | |
1671 | fake_storep + (lba * SECT_SIZE), | |
1672 | num * SECT_SIZE); | |
1673 | else { | |
1674 | /* modulo when one arg is 64 bits needs do_div() */ | |
1675 | u = lba; | |
1676 | block = do_div(u, sdebug_store_sectors); | |
1677 | to_bottom = 0; | |
1678 | if ((block + num) > sdebug_store_sectors) | |
1679 | to_bottom = (block + num) - sdebug_store_sectors; | |
1680 | res = fetch_to_dev_buffer(SCpnt, | |
1681 | fake_storep + (block * SECT_SIZE), | |
1682 | (num - to_bottom) * SECT_SIZE); | |
1683 | if ((0 == res) && (to_bottom > 0)) | |
1684 | res = fetch_to_dev_buffer(SCpnt, fake_storep, | |
1685 | to_bottom * SECT_SIZE); | |
1686 | } | |
1da177e4 LT |
1687 | write_unlock_irqrestore(&atomic_rw, iflags); |
1688 | if (-1 == res) | |
1689 | return (DID_ERROR << 16); | |
1690 | else if ((res < (num * SECT_SIZE)) && | |
1691 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
c65b1445 | 1692 | printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " |
1da177e4 LT |
1693 | " IO sent=%d bytes\n", num * SECT_SIZE, res); |
1694 | return 0; | |
1695 | } | |
1696 | ||
c65b1445 | 1697 | #define SDEBUG_RLUN_ARR_SZ 256 |
1da177e4 LT |
1698 | |
1699 | static int resp_report_luns(struct scsi_cmnd * scp, | |
1700 | struct sdebug_dev_info * devip) | |
1701 | { | |
1702 | unsigned int alloc_len; | |
c65b1445 | 1703 | int lun_cnt, i, upper, num, n, wlun, lun; |
1da177e4 LT |
1704 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
1705 | int select_report = (int)cmd[2]; | |
1706 | struct scsi_lun *one_lun; | |
1707 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; | |
c65b1445 | 1708 | unsigned char * max_addr; |
1da177e4 LT |
1709 | |
1710 | alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); | |
c65b1445 | 1711 | if ((alloc_len < 4) || (select_report > 2)) { |
1da177e4 LT |
1712 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1713 | 0); | |
1714 | return check_condition_result; | |
1715 | } | |
1716 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ | |
1717 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); | |
1718 | lun_cnt = scsi_debug_max_luns; | |
c65b1445 DG |
1719 | if (1 == select_report) |
1720 | lun_cnt = 0; | |
1721 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) | |
1722 | --lun_cnt; | |
1723 | wlun = (select_report > 0) ? 1 : 0; | |
1724 | num = lun_cnt + wlun; | |
1725 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; | |
1726 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; | |
1727 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / | |
1728 | sizeof(struct scsi_lun)), num); | |
1729 | if (n < num) { | |
1730 | wlun = 0; | |
1731 | lun_cnt = n; | |
1732 | } | |
1da177e4 | 1733 | one_lun = (struct scsi_lun *) &arr[8]; |
c65b1445 DG |
1734 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
1735 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); | |
1736 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); | |
1737 | i++, lun++) { | |
1738 | upper = (lun >> 8) & 0x3f; | |
1da177e4 LT |
1739 | if (upper) |
1740 | one_lun[i].scsi_lun[0] = | |
1741 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); | |
c65b1445 DG |
1742 | one_lun[i].scsi_lun[1] = lun & 0xff; |
1743 | } | |
1744 | if (wlun) { | |
1745 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; | |
1746 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; | |
1747 | i++; | |
1da177e4 | 1748 | } |
c65b1445 | 1749 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
1da177e4 LT |
1750 | return fill_from_dev_buffer(scp, arr, |
1751 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); | |
1752 | } | |
1753 | ||
1754 | /* When timer goes off this function is called. */ | |
1755 | static void timer_intr_handler(unsigned long indx) | |
1756 | { | |
1757 | struct sdebug_queued_cmd * sqcp; | |
1758 | unsigned long iflags; | |
1759 | ||
1760 | if (indx >= SCSI_DEBUG_CANQUEUE) { | |
1761 | printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " | |
1762 | "large\n"); | |
1763 | return; | |
1764 | } | |
1765 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
1766 | sqcp = &queued_arr[(int)indx]; | |
1767 | if (! sqcp->in_use) { | |
1768 | printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected " | |
1769 | "interrupt\n"); | |
1770 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1771 | return; | |
1772 | } | |
1773 | sqcp->in_use = 0; | |
1774 | if (sqcp->done_funct) { | |
1775 | sqcp->a_cmnd->result = sqcp->scsi_result; | |
1776 | sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */ | |
1777 | } | |
1778 | sqcp->done_funct = NULL; | |
1779 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1780 | } | |
1781 | ||
1782 | static int scsi_debug_slave_alloc(struct scsi_device * sdp) | |
1783 | { | |
1784 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
c65b1445 DG |
1785 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", |
1786 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
1da177e4 LT |
1787 | return 0; |
1788 | } | |
1789 | ||
1790 | static int scsi_debug_slave_configure(struct scsi_device * sdp) | |
1791 | { | |
1792 | struct sdebug_dev_info * devip; | |
1793 | ||
1794 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
c65b1445 DG |
1795 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", |
1796 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
1da177e4 LT |
1797 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) |
1798 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; | |
1799 | devip = devInfoReg(sdp); | |
1800 | sdp->hostdata = devip; | |
1801 | if (sdp->host->cmd_per_lun) | |
1802 | scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, | |
1803 | sdp->host->cmd_per_lun); | |
c65b1445 | 1804 | blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); |
1da177e4 LT |
1805 | return 0; |
1806 | } | |
1807 | ||
1808 | static void scsi_debug_slave_destroy(struct scsi_device * sdp) | |
1809 | { | |
1810 | struct sdebug_dev_info * devip = | |
1811 | (struct sdebug_dev_info *)sdp->hostdata; | |
1812 | ||
1813 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
c65b1445 DG |
1814 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", |
1815 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
1da177e4 LT |
1816 | if (devip) { |
1817 | /* make this slot avaliable for re-use */ | |
1818 | devip->used = 0; | |
1819 | sdp->hostdata = NULL; | |
1820 | } | |
1821 | } | |
1822 | ||
1823 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) | |
1824 | { | |
1825 | struct sdebug_host_info * sdbg_host; | |
1826 | struct sdebug_dev_info * open_devip = NULL; | |
1827 | struct sdebug_dev_info * devip = | |
1828 | (struct sdebug_dev_info *)sdev->hostdata; | |
1829 | ||
1830 | if (devip) | |
1831 | return devip; | |
1832 | sdbg_host = *(struct sdebug_host_info **) sdev->host->hostdata; | |
1833 | if(! sdbg_host) { | |
1834 | printk(KERN_ERR "Host info NULL\n"); | |
1835 | return NULL; | |
1836 | } | |
1837 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { | |
1838 | if ((devip->used) && (devip->channel == sdev->channel) && | |
1839 | (devip->target == sdev->id) && | |
1840 | (devip->lun == sdev->lun)) | |
1841 | return devip; | |
1842 | else { | |
1843 | if ((!devip->used) && (!open_devip)) | |
1844 | open_devip = devip; | |
1845 | } | |
1846 | } | |
1847 | if (NULL == open_devip) { /* try and make a new one */ | |
24669f75 | 1848 | open_devip = kzalloc(sizeof(*open_devip),GFP_KERNEL); |
1da177e4 LT |
1849 | if (NULL == open_devip) { |
1850 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
1851 | __FUNCTION__, __LINE__); | |
1852 | return NULL; | |
1853 | } | |
1da177e4 LT |
1854 | open_devip->sdbg_host = sdbg_host; |
1855 | list_add_tail(&open_devip->dev_list, | |
1856 | &sdbg_host->dev_info_list); | |
1857 | } | |
1858 | if (open_devip) { | |
1859 | open_devip->channel = sdev->channel; | |
1860 | open_devip->target = sdev->id; | |
1861 | open_devip->lun = sdev->lun; | |
1862 | open_devip->sdbg_host = sdbg_host; | |
1863 | open_devip->reset = 1; | |
1864 | open_devip->used = 1; | |
1865 | memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); | |
1866 | if (scsi_debug_dsense) | |
1867 | open_devip->sense_buff[0] = 0x72; | |
1868 | else { | |
1869 | open_devip->sense_buff[0] = 0x70; | |
1870 | open_devip->sense_buff[7] = 0xa; | |
1871 | } | |
c65b1445 DG |
1872 | if (sdev->lun == SAM2_WLUN_REPORT_LUNS) |
1873 | open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; | |
1da177e4 LT |
1874 | return open_devip; |
1875 | } | |
1876 | return NULL; | |
1877 | } | |
1878 | ||
1879 | static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, | |
1880 | int asc, int asq) | |
1881 | { | |
1882 | unsigned char * sbuff; | |
1883 | ||
1884 | sbuff = devip->sense_buff; | |
1885 | memset(sbuff, 0, SDEBUG_SENSE_LEN); | |
1886 | if (scsi_debug_dsense) { | |
1887 | sbuff[0] = 0x72; /* descriptor, current */ | |
1888 | sbuff[1] = key; | |
1889 | sbuff[2] = asc; | |
1890 | sbuff[3] = asq; | |
1891 | } else { | |
1892 | sbuff[0] = 0x70; /* fixed, current */ | |
1893 | sbuff[2] = key; | |
1894 | sbuff[7] = 0xa; /* implies 18 byte sense buffer */ | |
1895 | sbuff[12] = asc; | |
1896 | sbuff[13] = asq; | |
1897 | } | |
1898 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1899 | printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " | |
1900 | "[0x%x,0x%x,0x%x]\n", key, asc, asq); | |
1901 | } | |
1902 | ||
1903 | static int scsi_debug_abort(struct scsi_cmnd * SCpnt) | |
1904 | { | |
1905 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1906 | printk(KERN_INFO "scsi_debug: abort\n"); | |
1907 | ++num_aborts; | |
1908 | stop_queued_cmnd(SCpnt); | |
1909 | return SUCCESS; | |
1910 | } | |
1911 | ||
1912 | static int scsi_debug_biosparam(struct scsi_device *sdev, | |
1913 | struct block_device * bdev, sector_t capacity, int *info) | |
1914 | { | |
1915 | int res; | |
1916 | unsigned char *buf; | |
1917 | ||
1918 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1919 | printk(KERN_INFO "scsi_debug: biosparam\n"); | |
1920 | buf = scsi_bios_ptable(bdev); | |
1921 | if (buf) { | |
1922 | res = scsi_partsize(buf, capacity, | |
1923 | &info[2], &info[0], &info[1]); | |
1924 | kfree(buf); | |
1925 | if (! res) | |
1926 | return res; | |
1927 | } | |
1928 | info[0] = sdebug_heads; | |
1929 | info[1] = sdebug_sectors_per; | |
1930 | info[2] = sdebug_cylinders_per; | |
1931 | return 0; | |
1932 | } | |
1933 | ||
1934 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) | |
1935 | { | |
1936 | struct sdebug_dev_info * devip; | |
1937 | ||
1938 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1939 | printk(KERN_INFO "scsi_debug: device_reset\n"); | |
1940 | ++num_dev_resets; | |
1941 | if (SCpnt) { | |
1942 | devip = devInfoReg(SCpnt->device); | |
1943 | if (devip) | |
1944 | devip->reset = 1; | |
1945 | } | |
1946 | return SUCCESS; | |
1947 | } | |
1948 | ||
1949 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) | |
1950 | { | |
1951 | struct sdebug_host_info *sdbg_host; | |
1952 | struct sdebug_dev_info * dev_info; | |
1953 | struct scsi_device * sdp; | |
1954 | struct Scsi_Host * hp; | |
1955 | ||
1956 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1957 | printk(KERN_INFO "scsi_debug: bus_reset\n"); | |
1958 | ++num_bus_resets; | |
1959 | if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { | |
1960 | sdbg_host = *(struct sdebug_host_info **) hp->hostdata; | |
1961 | if (sdbg_host) { | |
1962 | list_for_each_entry(dev_info, | |
1963 | &sdbg_host->dev_info_list, | |
1964 | dev_list) | |
1965 | dev_info->reset = 1; | |
1966 | } | |
1967 | } | |
1968 | return SUCCESS; | |
1969 | } | |
1970 | ||
1971 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) | |
1972 | { | |
1973 | struct sdebug_host_info * sdbg_host; | |
1974 | struct sdebug_dev_info * dev_info; | |
1975 | ||
1976 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1977 | printk(KERN_INFO "scsi_debug: host_reset\n"); | |
1978 | ++num_host_resets; | |
1979 | spin_lock(&sdebug_host_list_lock); | |
1980 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
1981 | list_for_each_entry(dev_info, &sdbg_host->dev_info_list, | |
1982 | dev_list) | |
1983 | dev_info->reset = 1; | |
1984 | } | |
1985 | spin_unlock(&sdebug_host_list_lock); | |
1986 | stop_all_queued(); | |
1987 | return SUCCESS; | |
1988 | } | |
1989 | ||
1990 | /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ | |
1991 | static int stop_queued_cmnd(struct scsi_cmnd * cmnd) | |
1992 | { | |
1993 | unsigned long iflags; | |
1994 | int k; | |
1995 | struct sdebug_queued_cmd * sqcp; | |
1996 | ||
1997 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
1998 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
1999 | sqcp = &queued_arr[k]; | |
2000 | if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { | |
2001 | del_timer_sync(&sqcp->cmnd_timer); | |
2002 | sqcp->in_use = 0; | |
2003 | sqcp->a_cmnd = NULL; | |
2004 | break; | |
2005 | } | |
2006 | } | |
2007 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2008 | return (k < SCSI_DEBUG_CANQUEUE) ? 1 : 0; | |
2009 | } | |
2010 | ||
2011 | /* Deletes (stops) timers of all queued commands */ | |
2012 | static void stop_all_queued(void) | |
2013 | { | |
2014 | unsigned long iflags; | |
2015 | int k; | |
2016 | struct sdebug_queued_cmd * sqcp; | |
2017 | ||
2018 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2019 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2020 | sqcp = &queued_arr[k]; | |
2021 | if (sqcp->in_use && sqcp->a_cmnd) { | |
2022 | del_timer_sync(&sqcp->cmnd_timer); | |
2023 | sqcp->in_use = 0; | |
2024 | sqcp->a_cmnd = NULL; | |
2025 | } | |
2026 | } | |
2027 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2028 | } | |
2029 | ||
2030 | /* Initializes timers in queued array */ | |
2031 | static void __init init_all_queued(void) | |
2032 | { | |
2033 | unsigned long iflags; | |
2034 | int k; | |
2035 | struct sdebug_queued_cmd * sqcp; | |
2036 | ||
2037 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2038 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2039 | sqcp = &queued_arr[k]; | |
2040 | init_timer(&sqcp->cmnd_timer); | |
2041 | sqcp->in_use = 0; | |
2042 | sqcp->a_cmnd = NULL; | |
2043 | } | |
2044 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2045 | } | |
2046 | ||
2047 | static void __init sdebug_build_parts(unsigned char * ramp) | |
2048 | { | |
2049 | struct partition * pp; | |
2050 | int starts[SDEBUG_MAX_PARTS + 2]; | |
2051 | int sectors_per_part, num_sectors, k; | |
2052 | int heads_by_sects, start_sec, end_sec; | |
2053 | ||
2054 | /* assume partition table already zeroed */ | |
2055 | if ((scsi_debug_num_parts < 1) || (sdebug_store_size < 1048576)) | |
2056 | return; | |
2057 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { | |
2058 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; | |
2059 | printk(KERN_WARNING "scsi_debug:build_parts: reducing " | |
2060 | "partitions to %d\n", SDEBUG_MAX_PARTS); | |
2061 | } | |
c65b1445 | 2062 | num_sectors = (int)sdebug_store_sectors; |
1da177e4 LT |
2063 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
2064 | / scsi_debug_num_parts; | |
2065 | heads_by_sects = sdebug_heads * sdebug_sectors_per; | |
2066 | starts[0] = sdebug_sectors_per; | |
2067 | for (k = 1; k < scsi_debug_num_parts; ++k) | |
2068 | starts[k] = ((k * sectors_per_part) / heads_by_sects) | |
2069 | * heads_by_sects; | |
2070 | starts[scsi_debug_num_parts] = num_sectors; | |
2071 | starts[scsi_debug_num_parts + 1] = 0; | |
2072 | ||
2073 | ramp[510] = 0x55; /* magic partition markings */ | |
2074 | ramp[511] = 0xAA; | |
2075 | pp = (struct partition *)(ramp + 0x1be); | |
2076 | for (k = 0; starts[k + 1]; ++k, ++pp) { | |
2077 | start_sec = starts[k]; | |
2078 | end_sec = starts[k + 1] - 1; | |
2079 | pp->boot_ind = 0; | |
2080 | ||
2081 | pp->cyl = start_sec / heads_by_sects; | |
2082 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) | |
2083 | / sdebug_sectors_per; | |
2084 | pp->sector = (start_sec % sdebug_sectors_per) + 1; | |
2085 | ||
2086 | pp->end_cyl = end_sec / heads_by_sects; | |
2087 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) | |
2088 | / sdebug_sectors_per; | |
2089 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; | |
2090 | ||
2091 | pp->start_sect = start_sec; | |
2092 | pp->nr_sects = end_sec - start_sec + 1; | |
2093 | pp->sys_ind = 0x83; /* plain Linux partition */ | |
2094 | } | |
2095 | } | |
2096 | ||
2097 | static int schedule_resp(struct scsi_cmnd * cmnd, | |
2098 | struct sdebug_dev_info * devip, | |
2099 | done_funct_t done, int scsi_result, int delta_jiff) | |
2100 | { | |
2101 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) { | |
2102 | if (scsi_result) { | |
2103 | struct scsi_device * sdp = cmnd->device; | |
2104 | ||
c65b1445 DG |
2105 | printk(KERN_INFO "scsi_debug: <%u %u %u %u> " |
2106 | "non-zero result=0x%x\n", sdp->host->host_no, | |
2107 | sdp->channel, sdp->id, sdp->lun, scsi_result); | |
1da177e4 LT |
2108 | } |
2109 | } | |
2110 | if (cmnd && devip) { | |
2111 | /* simulate autosense by this driver */ | |
2112 | if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff)) | |
2113 | memcpy(cmnd->sense_buffer, devip->sense_buff, | |
2114 | (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ? | |
2115 | SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE); | |
2116 | } | |
2117 | if (delta_jiff <= 0) { | |
2118 | if (cmnd) | |
2119 | cmnd->result = scsi_result; | |
2120 | if (done) | |
2121 | done(cmnd); | |
2122 | return 0; | |
2123 | } else { | |
2124 | unsigned long iflags; | |
2125 | int k; | |
2126 | struct sdebug_queued_cmd * sqcp = NULL; | |
2127 | ||
2128 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2129 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2130 | sqcp = &queued_arr[k]; | |
2131 | if (! sqcp->in_use) | |
2132 | break; | |
2133 | } | |
2134 | if (k >= SCSI_DEBUG_CANQUEUE) { | |
2135 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2136 | printk(KERN_WARNING "scsi_debug: can_queue exceeded\n"); | |
2137 | return 1; /* report busy to mid level */ | |
2138 | } | |
2139 | sqcp->in_use = 1; | |
2140 | sqcp->a_cmnd = cmnd; | |
2141 | sqcp->scsi_result = scsi_result; | |
2142 | sqcp->done_funct = done; | |
2143 | sqcp->cmnd_timer.function = timer_intr_handler; | |
2144 | sqcp->cmnd_timer.data = k; | |
2145 | sqcp->cmnd_timer.expires = jiffies + delta_jiff; | |
2146 | add_timer(&sqcp->cmnd_timer); | |
2147 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2148 | if (cmnd) | |
2149 | cmnd->result = 0; | |
2150 | return 0; | |
2151 | } | |
2152 | } | |
2153 | ||
c65b1445 DG |
2154 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
2155 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); | |
2156 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); | |
2157 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); | |
2158 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); | |
2159 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); | |
2160 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); | |
2161 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); | |
2162 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); | |
2163 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); | |
2164 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); | |
2165 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); | |
2166 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); | |
1da177e4 LT |
2167 | |
2168 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); | |
2169 | MODULE_DESCRIPTION("SCSI debug adapter driver"); | |
2170 | MODULE_LICENSE("GPL"); | |
2171 | MODULE_VERSION(SCSI_DEBUG_VERSION); | |
2172 | ||
2173 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); | |
2174 | MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); | |
c65b1445 DG |
2175 | MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); |
2176 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); | |
1da177e4 | 2177 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=100)"); |
c65b1445 DG |
2178 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
2179 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); | |
1da177e4 | 2180 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
c65b1445 DG |
2181 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
2182 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_error, 4->... (def=0)"); | |
1da177e4 LT |
2183 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
2184 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])"); | |
c65b1445 | 2185 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); |
1da177e4 LT |
2186 | |
2187 | ||
2188 | static char sdebug_info[256]; | |
2189 | ||
2190 | static const char * scsi_debug_info(struct Scsi_Host * shp) | |
2191 | { | |
2192 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " | |
2193 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, | |
2194 | scsi_debug_version_date, scsi_debug_dev_size_mb, | |
2195 | scsi_debug_opts); | |
2196 | return sdebug_info; | |
2197 | } | |
2198 | ||
2199 | /* scsi_debug_proc_info | |
2200 | * Used if the driver currently has no own support for /proc/scsi | |
2201 | */ | |
2202 | static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset, | |
2203 | int length, int inout) | |
2204 | { | |
2205 | int len, pos, begin; | |
2206 | int orig_length; | |
2207 | ||
2208 | orig_length = length; | |
2209 | ||
2210 | if (inout == 1) { | |
2211 | char arr[16]; | |
2212 | int minLen = length > 15 ? 15 : length; | |
2213 | ||
2214 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
2215 | return -EACCES; | |
2216 | memcpy(arr, buffer, minLen); | |
2217 | arr[minLen] = '\0'; | |
2218 | if (1 != sscanf(arr, "%d", &pos)) | |
2219 | return -EINVAL; | |
2220 | scsi_debug_opts = pos; | |
2221 | if (scsi_debug_every_nth != 0) | |
2222 | scsi_debug_cmnd_count = 0; | |
2223 | return length; | |
2224 | } | |
2225 | begin = 0; | |
2226 | pos = len = sprintf(buffer, "scsi_debug adapter driver, version " | |
2227 | "%s [%s]\n" | |
2228 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " | |
2229 | "every_nth=%d(curr:%d)\n" | |
2230 | "delay=%d, max_luns=%d, scsi_level=%d\n" | |
2231 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" | |
2232 | "number of aborts=%d, device_reset=%d, bus_resets=%d, " | |
2233 | "host_resets=%d\n", | |
2234 | SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, | |
2235 | scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, | |
2236 | scsi_debug_cmnd_count, scsi_debug_delay, | |
2237 | scsi_debug_max_luns, scsi_debug_scsi_level, | |
2238 | SECT_SIZE, sdebug_cylinders_per, sdebug_heads, sdebug_sectors_per, | |
2239 | num_aborts, num_dev_resets, num_bus_resets, num_host_resets); | |
2240 | if (pos < offset) { | |
2241 | len = 0; | |
2242 | begin = pos; | |
2243 | } | |
2244 | *start = buffer + (offset - begin); /* Start of wanted data */ | |
2245 | len -= (offset - begin); | |
2246 | if (len > length) | |
2247 | len = length; | |
2248 | return len; | |
2249 | } | |
2250 | ||
2251 | static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf) | |
2252 | { | |
2253 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); | |
2254 | } | |
2255 | ||
2256 | static ssize_t sdebug_delay_store(struct device_driver * ddp, | |
2257 | const char * buf, size_t count) | |
2258 | { | |
2259 | int delay; | |
2260 | char work[20]; | |
2261 | ||
2262 | if (1 == sscanf(buf, "%10s", work)) { | |
2263 | if ((1 == sscanf(work, "%d", &delay)) && (delay >= 0)) { | |
2264 | scsi_debug_delay = delay; | |
2265 | return count; | |
2266 | } | |
2267 | } | |
2268 | return -EINVAL; | |
2269 | } | |
2270 | DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show, | |
2271 | sdebug_delay_store); | |
2272 | ||
2273 | static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf) | |
2274 | { | |
2275 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); | |
2276 | } | |
2277 | ||
2278 | static ssize_t sdebug_opts_store(struct device_driver * ddp, | |
2279 | const char * buf, size_t count) | |
2280 | { | |
2281 | int opts; | |
2282 | char work[20]; | |
2283 | ||
2284 | if (1 == sscanf(buf, "%10s", work)) { | |
2285 | if (0 == strnicmp(work,"0x", 2)) { | |
2286 | if (1 == sscanf(&work[2], "%x", &opts)) | |
2287 | goto opts_done; | |
2288 | } else { | |
2289 | if (1 == sscanf(work, "%d", &opts)) | |
2290 | goto opts_done; | |
2291 | } | |
2292 | } | |
2293 | return -EINVAL; | |
2294 | opts_done: | |
2295 | scsi_debug_opts = opts; | |
2296 | scsi_debug_cmnd_count = 0; | |
2297 | return count; | |
2298 | } | |
2299 | DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show, | |
2300 | sdebug_opts_store); | |
2301 | ||
2302 | static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf) | |
2303 | { | |
2304 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); | |
2305 | } | |
2306 | static ssize_t sdebug_ptype_store(struct device_driver * ddp, | |
2307 | const char * buf, size_t count) | |
2308 | { | |
2309 | int n; | |
2310 | ||
2311 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2312 | scsi_debug_ptype = n; | |
2313 | return count; | |
2314 | } | |
2315 | return -EINVAL; | |
2316 | } | |
2317 | DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store); | |
2318 | ||
2319 | static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf) | |
2320 | { | |
2321 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); | |
2322 | } | |
2323 | static ssize_t sdebug_dsense_store(struct device_driver * ddp, | |
2324 | const char * buf, size_t count) | |
2325 | { | |
2326 | int n; | |
2327 | ||
2328 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2329 | scsi_debug_dsense = n; | |
2330 | return count; | |
2331 | } | |
2332 | return -EINVAL; | |
2333 | } | |
2334 | DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show, | |
2335 | sdebug_dsense_store); | |
2336 | ||
c65b1445 DG |
2337 | static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf) |
2338 | { | |
2339 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); | |
2340 | } | |
2341 | static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp, | |
2342 | const char * buf, size_t count) | |
2343 | { | |
2344 | int n; | |
2345 | ||
2346 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2347 | scsi_debug_no_lun_0 = n; | |
2348 | return count; | |
2349 | } | |
2350 | return -EINVAL; | |
2351 | } | |
2352 | DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show, | |
2353 | sdebug_no_lun_0_store); | |
2354 | ||
1da177e4 LT |
2355 | static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf) |
2356 | { | |
2357 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); | |
2358 | } | |
2359 | static ssize_t sdebug_num_tgts_store(struct device_driver * ddp, | |
2360 | const char * buf, size_t count) | |
2361 | { | |
2362 | int n; | |
2363 | ||
2364 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2365 | scsi_debug_num_tgts = n; | |
2366 | sdebug_max_tgts_luns(); | |
2367 | return count; | |
2368 | } | |
2369 | return -EINVAL; | |
2370 | } | |
2371 | DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show, | |
2372 | sdebug_num_tgts_store); | |
2373 | ||
2374 | static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf) | |
2375 | { | |
2376 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); | |
2377 | } | |
2378 | DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL); | |
2379 | ||
2380 | static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf) | |
2381 | { | |
2382 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); | |
2383 | } | |
2384 | DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL); | |
2385 | ||
2386 | static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf) | |
2387 | { | |
2388 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); | |
2389 | } | |
2390 | static ssize_t sdebug_every_nth_store(struct device_driver * ddp, | |
2391 | const char * buf, size_t count) | |
2392 | { | |
2393 | int nth; | |
2394 | ||
2395 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { | |
2396 | scsi_debug_every_nth = nth; | |
2397 | scsi_debug_cmnd_count = 0; | |
2398 | return count; | |
2399 | } | |
2400 | return -EINVAL; | |
2401 | } | |
2402 | DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show, | |
2403 | sdebug_every_nth_store); | |
2404 | ||
2405 | static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf) | |
2406 | { | |
2407 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); | |
2408 | } | |
2409 | static ssize_t sdebug_max_luns_store(struct device_driver * ddp, | |
2410 | const char * buf, size_t count) | |
2411 | { | |
2412 | int n; | |
2413 | ||
2414 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2415 | scsi_debug_max_luns = n; | |
2416 | sdebug_max_tgts_luns(); | |
2417 | return count; | |
2418 | } | |
2419 | return -EINVAL; | |
2420 | } | |
2421 | DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, | |
2422 | sdebug_max_luns_store); | |
2423 | ||
2424 | static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf) | |
2425 | { | |
2426 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); | |
2427 | } | |
2428 | DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL); | |
2429 | ||
c65b1445 DG |
2430 | static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf) |
2431 | { | |
2432 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); | |
2433 | } | |
2434 | static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp, | |
2435 | const char * buf, size_t count) | |
2436 | { | |
2437 | int n; | |
2438 | ||
2439 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2440 | scsi_debug_virtual_gb = n; | |
2441 | if (scsi_debug_virtual_gb > 0) { | |
2442 | sdebug_capacity = 2048 * 1024; | |
2443 | sdebug_capacity *= scsi_debug_virtual_gb; | |
2444 | } else | |
2445 | sdebug_capacity = sdebug_store_sectors; | |
2446 | return count; | |
2447 | } | |
2448 | return -EINVAL; | |
2449 | } | |
2450 | DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show, | |
2451 | sdebug_virtual_gb_store); | |
2452 | ||
1da177e4 LT |
2453 | static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf) |
2454 | { | |
2455 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); | |
2456 | } | |
2457 | ||
2458 | static ssize_t sdebug_add_host_store(struct device_driver * ddp, | |
2459 | const char * buf, size_t count) | |
2460 | { | |
2461 | int delta_hosts; | |
2462 | char work[20]; | |
2463 | ||
2464 | if (1 != sscanf(buf, "%10s", work)) | |
2465 | return -EINVAL; | |
2466 | { /* temporary hack around sscanf() problem with -ve nums */ | |
2467 | int neg = 0; | |
2468 | ||
2469 | if ('-' == *work) | |
2470 | neg = 1; | |
2471 | if (1 != sscanf(work + neg, "%d", &delta_hosts)) | |
2472 | return -EINVAL; | |
2473 | if (neg) | |
2474 | delta_hosts = -delta_hosts; | |
2475 | } | |
2476 | if (delta_hosts > 0) { | |
2477 | do { | |
2478 | sdebug_add_adapter(); | |
2479 | } while (--delta_hosts); | |
2480 | } else if (delta_hosts < 0) { | |
2481 | do { | |
2482 | sdebug_remove_adapter(); | |
2483 | } while (++delta_hosts); | |
2484 | } | |
2485 | return count; | |
2486 | } | |
2487 | DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show, | |
2488 | sdebug_add_host_store); | |
2489 | ||
6ecaff7f | 2490 | static int do_create_driverfs_files(void) |
1da177e4 | 2491 | { |
6ecaff7f RD |
2492 | int ret; |
2493 | ||
2494 | ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host); | |
2495 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay); | |
2496 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); | |
2497 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense); | |
2498 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth); | |
2499 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns); | |
2500 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); | |
2501 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts); | |
2502 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype); | |
2503 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts); | |
2504 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); | |
2505 | return ret; | |
1da177e4 LT |
2506 | } |
2507 | ||
2508 | static void do_remove_driverfs_files(void) | |
2509 | { | |
2510 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); | |
2511 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts); | |
2512 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype); | |
2513 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts); | |
2514 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); | |
2515 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns); | |
2516 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth); | |
2517 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense); | |
2518 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); | |
2519 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay); | |
2520 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); | |
2521 | } | |
2522 | ||
2523 | static int __init scsi_debug_init(void) | |
2524 | { | |
c65b1445 | 2525 | unsigned int sz; |
1da177e4 LT |
2526 | int host_to_add; |
2527 | int k; | |
6ecaff7f | 2528 | int ret; |
1da177e4 LT |
2529 | |
2530 | if (scsi_debug_dev_size_mb < 1) | |
2531 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ | |
c65b1445 DG |
2532 | sdebug_store_size = (unsigned int)scsi_debug_dev_size_mb * 1048576; |
2533 | sdebug_store_sectors = sdebug_store_size / SECT_SIZE; | |
2534 | if (scsi_debug_virtual_gb > 0) { | |
2535 | sdebug_capacity = 2048 * 1024; | |
2536 | sdebug_capacity *= scsi_debug_virtual_gb; | |
2537 | } else | |
2538 | sdebug_capacity = sdebug_store_sectors; | |
1da177e4 LT |
2539 | |
2540 | /* play around with geometry, don't waste too much on track 0 */ | |
2541 | sdebug_heads = 8; | |
2542 | sdebug_sectors_per = 32; | |
2543 | if (scsi_debug_dev_size_mb >= 16) | |
2544 | sdebug_heads = 32; | |
2545 | else if (scsi_debug_dev_size_mb >= 256) | |
2546 | sdebug_heads = 64; | |
2547 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
2548 | (sdebug_sectors_per * sdebug_heads); | |
2549 | if (sdebug_cylinders_per >= 1024) { | |
2550 | /* other LLDs do this; implies >= 1GB ram disk ... */ | |
2551 | sdebug_heads = 255; | |
2552 | sdebug_sectors_per = 63; | |
2553 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
2554 | (sdebug_sectors_per * sdebug_heads); | |
2555 | } | |
2556 | ||
2557 | sz = sdebug_store_size; | |
2558 | fake_storep = vmalloc(sz); | |
2559 | if (NULL == fake_storep) { | |
2560 | printk(KERN_ERR "scsi_debug_init: out of memory, 1\n"); | |
2561 | return -ENOMEM; | |
2562 | } | |
2563 | memset(fake_storep, 0, sz); | |
2564 | if (scsi_debug_num_parts > 0) | |
2565 | sdebug_build_parts(fake_storep); | |
2566 | ||
6ecaff7f RD |
2567 | ret = device_register(&pseudo_primary); |
2568 | if (ret < 0) { | |
2569 | printk(KERN_WARNING "scsi_debug: device_register error: %d\n", | |
2570 | ret); | |
2571 | goto free_vm; | |
2572 | } | |
2573 | ret = bus_register(&pseudo_lld_bus); | |
2574 | if (ret < 0) { | |
2575 | printk(KERN_WARNING "scsi_debug: bus_register error: %d\n", | |
2576 | ret); | |
2577 | goto dev_unreg; | |
2578 | } | |
2579 | ret = driver_register(&sdebug_driverfs_driver); | |
2580 | if (ret < 0) { | |
2581 | printk(KERN_WARNING "scsi_debug: driver_register error: %d\n", | |
2582 | ret); | |
2583 | goto bus_unreg; | |
2584 | } | |
2585 | ret = do_create_driverfs_files(); | |
2586 | if (ret < 0) { | |
2587 | printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n", | |
2588 | ret); | |
2589 | goto del_files; | |
2590 | } | |
1da177e4 | 2591 | |
6ecaff7f | 2592 | init_all_queued(); |
1da177e4 LT |
2593 | |
2594 | sdebug_driver_template.proc_name = (char *)sdebug_proc_name; | |
2595 | ||
2596 | host_to_add = scsi_debug_add_host; | |
2597 | scsi_debug_add_host = 0; | |
2598 | ||
2599 | for (k = 0; k < host_to_add; k++) { | |
2600 | if (sdebug_add_adapter()) { | |
2601 | printk(KERN_ERR "scsi_debug_init: " | |
2602 | "sdebug_add_adapter failed k=%d\n", k); | |
2603 | break; | |
2604 | } | |
2605 | } | |
2606 | ||
2607 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
2608 | printk(KERN_INFO "scsi_debug_init: built %d host(s)\n", | |
2609 | scsi_debug_add_host); | |
2610 | } | |
2611 | return 0; | |
6ecaff7f RD |
2612 | |
2613 | del_files: | |
2614 | do_remove_driverfs_files(); | |
2615 | driver_unregister(&sdebug_driverfs_driver); | |
2616 | bus_unreg: | |
2617 | bus_unregister(&pseudo_lld_bus); | |
2618 | dev_unreg: | |
2619 | device_unregister(&pseudo_primary); | |
2620 | free_vm: | |
2621 | vfree(fake_storep); | |
2622 | ||
2623 | return ret; | |
1da177e4 LT |
2624 | } |
2625 | ||
2626 | static void __exit scsi_debug_exit(void) | |
2627 | { | |
2628 | int k = scsi_debug_add_host; | |
2629 | ||
2630 | stop_all_queued(); | |
2631 | for (; k; k--) | |
2632 | sdebug_remove_adapter(); | |
2633 | do_remove_driverfs_files(); | |
2634 | driver_unregister(&sdebug_driverfs_driver); | |
2635 | bus_unregister(&pseudo_lld_bus); | |
2636 | device_unregister(&pseudo_primary); | |
2637 | ||
2638 | vfree(fake_storep); | |
2639 | } | |
2640 | ||
2641 | device_initcall(scsi_debug_init); | |
2642 | module_exit(scsi_debug_exit); | |
2643 | ||
52c1da39 | 2644 | static void pseudo_0_release(struct device * dev) |
1da177e4 LT |
2645 | { |
2646 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2647 | printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n"); | |
2648 | } | |
2649 | ||
2650 | static struct device pseudo_primary = { | |
2651 | .bus_id = "pseudo_0", | |
2652 | .release = pseudo_0_release, | |
2653 | }; | |
2654 | ||
2655 | static int pseudo_lld_bus_match(struct device *dev, | |
2656 | struct device_driver *dev_driver) | |
2657 | { | |
2658 | return 1; | |
2659 | } | |
2660 | ||
2661 | static struct bus_type pseudo_lld_bus = { | |
2662 | .name = "pseudo", | |
2663 | .match = pseudo_lld_bus_match, | |
bbbe3a41 RK |
2664 | .probe = sdebug_driver_probe, |
2665 | .remove = sdebug_driver_remove, | |
1da177e4 LT |
2666 | }; |
2667 | ||
2668 | static void sdebug_release_adapter(struct device * dev) | |
2669 | { | |
2670 | struct sdebug_host_info *sdbg_host; | |
2671 | ||
2672 | sdbg_host = to_sdebug_host(dev); | |
2673 | kfree(sdbg_host); | |
2674 | } | |
2675 | ||
2676 | static int sdebug_add_adapter(void) | |
2677 | { | |
2678 | int k, devs_per_host; | |
2679 | int error = 0; | |
2680 | struct sdebug_host_info *sdbg_host; | |
2681 | struct sdebug_dev_info *sdbg_devinfo; | |
2682 | struct list_head *lh, *lh_sf; | |
2683 | ||
c65b1445 | 2684 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
1da177e4 LT |
2685 | |
2686 | if (NULL == sdbg_host) { | |
2687 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
2688 | __FUNCTION__, __LINE__); | |
2689 | return -ENOMEM; | |
2690 | } | |
2691 | ||
1da177e4 LT |
2692 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
2693 | ||
2694 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; | |
2695 | for (k = 0; k < devs_per_host; k++) { | |
c65b1445 | 2696 | sdbg_devinfo = kzalloc(sizeof(*sdbg_devinfo),GFP_KERNEL); |
1da177e4 LT |
2697 | if (NULL == sdbg_devinfo) { |
2698 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
2699 | __FUNCTION__, __LINE__); | |
2700 | error = -ENOMEM; | |
2701 | goto clean; | |
2702 | } | |
1da177e4 LT |
2703 | sdbg_devinfo->sdbg_host = sdbg_host; |
2704 | list_add_tail(&sdbg_devinfo->dev_list, | |
2705 | &sdbg_host->dev_info_list); | |
2706 | } | |
2707 | ||
2708 | spin_lock(&sdebug_host_list_lock); | |
2709 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); | |
2710 | spin_unlock(&sdebug_host_list_lock); | |
2711 | ||
2712 | sdbg_host->dev.bus = &pseudo_lld_bus; | |
2713 | sdbg_host->dev.parent = &pseudo_primary; | |
2714 | sdbg_host->dev.release = &sdebug_release_adapter; | |
2715 | sprintf(sdbg_host->dev.bus_id, "adapter%d", scsi_debug_add_host); | |
2716 | ||
2717 | error = device_register(&sdbg_host->dev); | |
2718 | ||
2719 | if (error) | |
2720 | goto clean; | |
2721 | ||
2722 | ++scsi_debug_add_host; | |
2723 | return error; | |
2724 | ||
2725 | clean: | |
2726 | list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { | |
2727 | sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, | |
2728 | dev_list); | |
2729 | list_del(&sdbg_devinfo->dev_list); | |
2730 | kfree(sdbg_devinfo); | |
2731 | } | |
2732 | ||
2733 | kfree(sdbg_host); | |
2734 | return error; | |
2735 | } | |
2736 | ||
2737 | static void sdebug_remove_adapter(void) | |
2738 | { | |
2739 | struct sdebug_host_info * sdbg_host = NULL; | |
2740 | ||
2741 | spin_lock(&sdebug_host_list_lock); | |
2742 | if (!list_empty(&sdebug_host_list)) { | |
2743 | sdbg_host = list_entry(sdebug_host_list.prev, | |
2744 | struct sdebug_host_info, host_list); | |
2745 | list_del(&sdbg_host->host_list); | |
2746 | } | |
2747 | spin_unlock(&sdebug_host_list_lock); | |
2748 | ||
2749 | if (!sdbg_host) | |
2750 | return; | |
2751 | ||
2752 | device_unregister(&sdbg_host->dev); | |
2753 | --scsi_debug_add_host; | |
2754 | } | |
2755 | ||
2756 | static int sdebug_driver_probe(struct device * dev) | |
2757 | { | |
2758 | int error = 0; | |
2759 | struct sdebug_host_info *sdbg_host; | |
2760 | struct Scsi_Host *hpnt; | |
2761 | ||
2762 | sdbg_host = to_sdebug_host(dev); | |
2763 | ||
2764 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); | |
2765 | if (NULL == hpnt) { | |
2766 | printk(KERN_ERR "%s: scsi_register failed\n", __FUNCTION__); | |
2767 | error = -ENODEV; | |
2768 | return error; | |
2769 | } | |
2770 | ||
2771 | sdbg_host->shost = hpnt; | |
2772 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; | |
2773 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) | |
2774 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
2775 | else | |
2776 | hpnt->max_id = scsi_debug_num_tgts; | |
c65b1445 | 2777 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
1da177e4 LT |
2778 | |
2779 | error = scsi_add_host(hpnt, &sdbg_host->dev); | |
2780 | if (error) { | |
2781 | printk(KERN_ERR "%s: scsi_add_host failed\n", __FUNCTION__); | |
2782 | error = -ENODEV; | |
2783 | scsi_host_put(hpnt); | |
2784 | } else | |
2785 | scsi_scan_host(hpnt); | |
2786 | ||
2787 | ||
2788 | return error; | |
2789 | } | |
2790 | ||
2791 | static int sdebug_driver_remove(struct device * dev) | |
2792 | { | |
2793 | struct list_head *lh, *lh_sf; | |
2794 | struct sdebug_host_info *sdbg_host; | |
2795 | struct sdebug_dev_info *sdbg_devinfo; | |
2796 | ||
2797 | sdbg_host = to_sdebug_host(dev); | |
2798 | ||
2799 | if (!sdbg_host) { | |
2800 | printk(KERN_ERR "%s: Unable to locate host info\n", | |
2801 | __FUNCTION__); | |
2802 | return -ENODEV; | |
2803 | } | |
2804 | ||
2805 | scsi_remove_host(sdbg_host->shost); | |
2806 | ||
2807 | list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { | |
2808 | sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, | |
2809 | dev_list); | |
2810 | list_del(&sdbg_devinfo->dev_list); | |
2811 | kfree(sdbg_devinfo); | |
2812 | } | |
2813 | ||
2814 | scsi_host_put(sdbg_host->shost); | |
2815 | return 0; | |
2816 | } | |
2817 | ||
2818 | static void sdebug_max_tgts_luns(void) | |
2819 | { | |
2820 | struct sdebug_host_info * sdbg_host; | |
2821 | struct Scsi_Host *hpnt; | |
2822 | ||
2823 | spin_lock(&sdebug_host_list_lock); | |
2824 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
2825 | hpnt = sdbg_host->shost; | |
2826 | if ((hpnt->this_id >= 0) && | |
2827 | (scsi_debug_num_tgts > hpnt->this_id)) | |
2828 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
2829 | else | |
2830 | hpnt->max_id = scsi_debug_num_tgts; | |
c65b1445 | 2831 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* scsi_debug_max_luns; */ |
1da177e4 LT |
2832 | } |
2833 | spin_unlock(&sdebug_host_list_lock); | |
2834 | } |