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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv |
3 | * Copyright (C) 1992 Eric Youngdale | |
4 | * Simulate a host adapter with 2 disks attached. Do a lot of checking | |
5 | * to make sure that we are not getting blocks mixed up, and PANIC if | |
6 | * anything out of the ordinary is seen. | |
7 | * ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
8 | * | |
9 | * This version is more generic, simulating a variable number of disk | |
23183910 DG |
10 | * (or disk like devices) sharing a common amount of RAM. To be more |
11 | * realistic, the simulated devices have the transport attributes of | |
12 | * SAS disks. | |
1da177e4 LT |
13 | * |
14 | * | |
15 | * For documentation see http://www.torque.net/sg/sdebug26.html | |
16 | * | |
17 | * D. Gilbert (dpg) work for Magneto-Optical device test [20010421] | |
18 | * dpg: work for devfs large number of disks [20010809] | |
19 | * forked for lk 2.5 series [20011216, 20020101] | |
20 | * use vmalloc() more inquiry+mode_sense [20020302] | |
21 | * add timers for delayed responses [20020721] | |
22 | * Patrick Mansfield <patmans@us.ibm.com> max_luns+scsi_level [20021031] | |
23 | * Mike Anderson <andmike@us.ibm.com> sysfs work [20021118] | |
24 | * dpg: change style of boot options to "scsi_debug.num_tgts=2" and | |
25 | * module options to "modprobe scsi_debug num_tgts=2" [20021221] | |
26 | */ | |
27 | ||
1da177e4 LT |
28 | #include <linux/module.h> |
29 | ||
30 | #include <linux/kernel.h> | |
31 | #include <linux/sched.h> | |
32 | #include <linux/errno.h> | |
33 | #include <linux/timer.h> | |
34 | #include <linux/types.h> | |
35 | #include <linux/string.h> | |
36 | #include <linux/genhd.h> | |
37 | #include <linux/fs.h> | |
38 | #include <linux/init.h> | |
39 | #include <linux/proc_fs.h> | |
40 | #include <linux/smp_lock.h> | |
41 | #include <linux/vmalloc.h> | |
42 | #include <linux/moduleparam.h> | |
43 | ||
44 | #include <linux/blkdev.h> | |
45 | #include "scsi.h" | |
46 | #include <scsi/scsi_host.h> | |
47 | #include <scsi/scsicam.h> | |
48 | ||
49 | #include <linux/stat.h> | |
50 | ||
1da177e4 LT |
51 | #include "scsi_logging.h" |
52 | #include "scsi_debug.h" | |
53 | ||
23183910 DG |
54 | #define SCSI_DEBUG_VERSION "1.80" |
55 | static const char * scsi_debug_version_date = "20060914"; | |
1da177e4 LT |
56 | |
57 | /* Additional Sense Code (ASC) used */ | |
c65b1445 DG |
58 | #define NO_ADDITIONAL_SENSE 0x0 |
59 | #define LOGICAL_UNIT_NOT_READY 0x4 | |
1da177e4 | 60 | #define UNRECOVERED_READ_ERR 0x11 |
c65b1445 | 61 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
1da177e4 LT |
62 | #define INVALID_OPCODE 0x20 |
63 | #define ADDR_OUT_OF_RANGE 0x21 | |
64 | #define INVALID_FIELD_IN_CDB 0x24 | |
c65b1445 | 65 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
1da177e4 LT |
66 | #define POWERON_RESET 0x29 |
67 | #define SAVING_PARAMS_UNSUP 0x39 | |
c65b1445 DG |
68 | #define THRESHOLD_EXCEEDED 0x5d |
69 | #define LOW_POWER_COND_ON 0x5e | |
1da177e4 LT |
70 | |
71 | #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ | |
72 | ||
73 | /* Default values for driver parameters */ | |
74 | #define DEF_NUM_HOST 1 | |
75 | #define DEF_NUM_TGTS 1 | |
76 | #define DEF_MAX_LUNS 1 | |
77 | /* With these defaults, this driver will make 1 host with 1 target | |
78 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. | |
79 | */ | |
80 | #define DEF_DELAY 1 | |
81 | #define DEF_DEV_SIZE_MB 8 | |
82 | #define DEF_EVERY_NTH 0 | |
83 | #define DEF_NUM_PARTS 0 | |
84 | #define DEF_OPTS 0 | |
85 | #define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ | |
86 | #define DEF_PTYPE 0 | |
87 | #define DEF_D_SENSE 0 | |
c65b1445 DG |
88 | #define DEF_NO_LUN_0 0 |
89 | #define DEF_VIRTUAL_GB 0 | |
23183910 DG |
90 | #define DEF_FAKE_RW 0 |
91 | #define DEF_VPD_USE_HOSTNO 1 | |
1da177e4 LT |
92 | |
93 | /* bit mask values for scsi_debug_opts */ | |
94 | #define SCSI_DEBUG_OPT_NOISE 1 | |
95 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 | |
96 | #define SCSI_DEBUG_OPT_TIMEOUT 4 | |
97 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 | |
98 | /* When "every_nth" > 0 then modulo "every_nth" commands: | |
99 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
100 | * - a RECOVERED_ERROR is simulated on successful read and write | |
101 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
102 | * | |
103 | * When "every_nth" < 0 then after "- every_nth" commands: | |
104 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
105 | * - a RECOVERED_ERROR is simulated on successful read and write | |
106 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
107 | * This will continue until some other action occurs (e.g. the user | |
108 | * writing a new value (other than -1 or 1) to every_nth via sysfs). | |
109 | */ | |
110 | ||
111 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this | |
112 | * sector on read commands: */ | |
113 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ | |
114 | ||
115 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) | |
116 | * or "peripheral device" addressing (value 0) */ | |
117 | #define SAM2_LUN_ADDRESS_METHOD 0 | |
c65b1445 | 118 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
1da177e4 LT |
119 | |
120 | static int scsi_debug_add_host = DEF_NUM_HOST; | |
121 | static int scsi_debug_delay = DEF_DELAY; | |
122 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; | |
123 | static int scsi_debug_every_nth = DEF_EVERY_NTH; | |
124 | static int scsi_debug_max_luns = DEF_MAX_LUNS; | |
125 | static int scsi_debug_num_parts = DEF_NUM_PARTS; | |
126 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ | |
127 | static int scsi_debug_opts = DEF_OPTS; | |
128 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; | |
129 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ | |
130 | static int scsi_debug_dsense = DEF_D_SENSE; | |
c65b1445 DG |
131 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
132 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; | |
23183910 DG |
133 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
134 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; | |
1da177e4 LT |
135 | |
136 | static int scsi_debug_cmnd_count = 0; | |
137 | ||
138 | #define DEV_READONLY(TGT) (0) | |
139 | #define DEV_REMOVEABLE(TGT) (0) | |
140 | ||
c65b1445 DG |
141 | static unsigned int sdebug_store_size; /* in bytes */ |
142 | static unsigned int sdebug_store_sectors; | |
1da177e4 LT |
143 | static sector_t sdebug_capacity; /* in sectors */ |
144 | ||
145 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages | |
146 | may still need them */ | |
147 | static int sdebug_heads; /* heads per disk */ | |
148 | static int sdebug_cylinders_per; /* cylinders per surface */ | |
149 | static int sdebug_sectors_per; /* sectors per cylinder */ | |
150 | ||
151 | /* default sector size is 512 bytes, 2**9 bytes */ | |
152 | #define POW2_SECT_SIZE 9 | |
153 | #define SECT_SIZE (1 << POW2_SECT_SIZE) | |
154 | #define SECT_SIZE_PER(TGT) SECT_SIZE | |
155 | ||
156 | #define SDEBUG_MAX_PARTS 4 | |
157 | ||
158 | #define SDEBUG_SENSE_LEN 32 | |
159 | ||
160 | struct sdebug_dev_info { | |
161 | struct list_head dev_list; | |
162 | unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ | |
163 | unsigned int channel; | |
164 | unsigned int target; | |
165 | unsigned int lun; | |
166 | struct sdebug_host_info *sdbg_host; | |
c65b1445 | 167 | unsigned int wlun; |
1da177e4 | 168 | char reset; |
c65b1445 | 169 | char stopped; |
1da177e4 LT |
170 | char used; |
171 | }; | |
172 | ||
173 | struct sdebug_host_info { | |
174 | struct list_head host_list; | |
175 | struct Scsi_Host *shost; | |
176 | struct device dev; | |
177 | struct list_head dev_info_list; | |
178 | }; | |
179 | ||
180 | #define to_sdebug_host(d) \ | |
181 | container_of(d, struct sdebug_host_info, dev) | |
182 | ||
183 | static LIST_HEAD(sdebug_host_list); | |
184 | static DEFINE_SPINLOCK(sdebug_host_list_lock); | |
185 | ||
186 | typedef void (* done_funct_t) (struct scsi_cmnd *); | |
187 | ||
188 | struct sdebug_queued_cmd { | |
189 | int in_use; | |
190 | struct timer_list cmnd_timer; | |
191 | done_funct_t done_funct; | |
192 | struct scsi_cmnd * a_cmnd; | |
193 | int scsi_result; | |
194 | }; | |
195 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; | |
196 | ||
d0be4a7d | 197 | static struct scsi_host_template sdebug_driver_template = { |
1da177e4 LT |
198 | .proc_info = scsi_debug_proc_info, |
199 | .name = "SCSI DEBUG", | |
200 | .info = scsi_debug_info, | |
201 | .slave_alloc = scsi_debug_slave_alloc, | |
202 | .slave_configure = scsi_debug_slave_configure, | |
203 | .slave_destroy = scsi_debug_slave_destroy, | |
204 | .ioctl = scsi_debug_ioctl, | |
205 | .queuecommand = scsi_debug_queuecommand, | |
206 | .eh_abort_handler = scsi_debug_abort, | |
207 | .eh_bus_reset_handler = scsi_debug_bus_reset, | |
208 | .eh_device_reset_handler = scsi_debug_device_reset, | |
209 | .eh_host_reset_handler = scsi_debug_host_reset, | |
210 | .bios_param = scsi_debug_biosparam, | |
211 | .can_queue = SCSI_DEBUG_CANQUEUE, | |
212 | .this_id = 7, | |
c65b1445 DG |
213 | .sg_tablesize = 256, |
214 | .cmd_per_lun = 16, | |
215 | .max_sectors = 0xffff, | |
1da177e4 | 216 | .unchecked_isa_dma = 0, |
c65b1445 | 217 | .use_clustering = ENABLE_CLUSTERING, |
1da177e4 LT |
218 | .module = THIS_MODULE, |
219 | }; | |
220 | ||
221 | static unsigned char * fake_storep; /* ramdisk storage */ | |
222 | ||
223 | static int num_aborts = 0; | |
224 | static int num_dev_resets = 0; | |
225 | static int num_bus_resets = 0; | |
226 | static int num_host_resets = 0; | |
227 | ||
228 | static DEFINE_SPINLOCK(queued_arr_lock); | |
229 | static DEFINE_RWLOCK(atomic_rw); | |
230 | ||
231 | static char sdebug_proc_name[] = "scsi_debug"; | |
232 | ||
233 | static int sdebug_driver_probe(struct device *); | |
234 | static int sdebug_driver_remove(struct device *); | |
235 | static struct bus_type pseudo_lld_bus; | |
236 | ||
237 | static struct device_driver sdebug_driverfs_driver = { | |
238 | .name = sdebug_proc_name, | |
239 | .bus = &pseudo_lld_bus, | |
1da177e4 LT |
240 | }; |
241 | ||
242 | static const int check_condition_result = | |
243 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | |
244 | ||
c65b1445 DG |
245 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
246 | 0, 0, 0x2, 0x4b}; | |
247 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
248 | 0, 0, 0x0, 0x0}; | |
249 | ||
1da177e4 LT |
250 | /* function declarations */ |
251 | static int resp_inquiry(struct scsi_cmnd * SCpnt, int target, | |
252 | struct sdebug_dev_info * devip); | |
253 | static int resp_requests(struct scsi_cmnd * SCpnt, | |
254 | struct sdebug_dev_info * devip); | |
c65b1445 DG |
255 | static int resp_start_stop(struct scsi_cmnd * scp, |
256 | struct sdebug_dev_info * devip); | |
1da177e4 LT |
257 | static int resp_readcap(struct scsi_cmnd * SCpnt, |
258 | struct sdebug_dev_info * devip); | |
c65b1445 DG |
259 | static int resp_readcap16(struct scsi_cmnd * SCpnt, |
260 | struct sdebug_dev_info * devip); | |
261 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, | |
1da177e4 | 262 | struct sdebug_dev_info * devip); |
c65b1445 DG |
263 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, |
264 | struct sdebug_dev_info * devip); | |
265 | static int resp_log_sense(struct scsi_cmnd * scp, | |
266 | struct sdebug_dev_info * devip); | |
267 | static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, | |
268 | unsigned int num, struct sdebug_dev_info * devip); | |
269 | static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, | |
270 | unsigned int num, struct sdebug_dev_info * devip); | |
1da177e4 LT |
271 | static int resp_report_luns(struct scsi_cmnd * SCpnt, |
272 | struct sdebug_dev_info * devip); | |
273 | static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, | |
274 | int arr_len); | |
275 | static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, | |
276 | int max_arr_len); | |
277 | static void timer_intr_handler(unsigned long); | |
278 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev); | |
279 | static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, | |
280 | int asc, int asq); | |
c65b1445 DG |
281 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
282 | struct sdebug_dev_info * devip); | |
1da177e4 LT |
283 | static int schedule_resp(struct scsi_cmnd * cmnd, |
284 | struct sdebug_dev_info * devip, | |
285 | done_funct_t done, int scsi_result, int delta_jiff); | |
286 | static void __init sdebug_build_parts(unsigned char * ramp); | |
287 | static void __init init_all_queued(void); | |
288 | static void stop_all_queued(void); | |
289 | static int stop_queued_cmnd(struct scsi_cmnd * cmnd); | |
c65b1445 DG |
290 | static int inquiry_evpd_83(unsigned char * arr, int target_dev_id, |
291 | int dev_id_num, const char * dev_id_str, | |
292 | int dev_id_str_len); | |
293 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id); | |
6ecaff7f | 294 | static int do_create_driverfs_files(void); |
1da177e4 LT |
295 | static void do_remove_driverfs_files(void); |
296 | ||
297 | static int sdebug_add_adapter(void); | |
298 | static void sdebug_remove_adapter(void); | |
299 | static void sdebug_max_tgts_luns(void); | |
300 | ||
301 | static struct device pseudo_primary; | |
302 | static struct bus_type pseudo_lld_bus; | |
303 | ||
304 | ||
305 | static | |
306 | int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done) | |
307 | { | |
308 | unsigned char *cmd = (unsigned char *) SCpnt->cmnd; | |
c65b1445 DG |
309 | int len, k, j; |
310 | unsigned int num; | |
311 | unsigned long long lba; | |
1da177e4 | 312 | int errsts = 0; |
c65b1445 | 313 | int target = SCpnt->device->id; |
1da177e4 LT |
314 | struct sdebug_dev_info * devip = NULL; |
315 | int inj_recovered = 0; | |
c65b1445 | 316 | int delay_override = 0; |
1da177e4 LT |
317 | |
318 | if (done == NULL) | |
319 | return 0; /* assume mid level reprocessing command */ | |
320 | ||
c65b1445 | 321 | SCpnt->resid = 0; |
1da177e4 LT |
322 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { |
323 | printk(KERN_INFO "scsi_debug: cmd "); | |
c65b1445 | 324 | for (k = 0, len = SCpnt->cmd_len; k < len; ++k) |
1da177e4 LT |
325 | printk("%02x ", (int)cmd[k]); |
326 | printk("\n"); | |
327 | } | |
328 | if(target == sdebug_driver_template.this_id) { | |
329 | printk(KERN_INFO "scsi_debug: initiator's id used as " | |
330 | "target!\n"); | |
331 | return schedule_resp(SCpnt, NULL, done, | |
332 | DID_NO_CONNECT << 16, 0); | |
333 | } | |
334 | ||
c65b1445 DG |
335 | if ((SCpnt->device->lun >= scsi_debug_max_luns) && |
336 | (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) | |
1da177e4 LT |
337 | return schedule_resp(SCpnt, NULL, done, |
338 | DID_NO_CONNECT << 16, 0); | |
339 | devip = devInfoReg(SCpnt->device); | |
340 | if (NULL == devip) | |
341 | return schedule_resp(SCpnt, NULL, done, | |
342 | DID_NO_CONNECT << 16, 0); | |
343 | ||
344 | if ((scsi_debug_every_nth != 0) && | |
345 | (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { | |
346 | scsi_debug_cmnd_count = 0; | |
347 | if (scsi_debug_every_nth < -1) | |
348 | scsi_debug_every_nth = -1; | |
349 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) | |
350 | return 0; /* ignore command causing timeout */ | |
351 | else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) | |
352 | inj_recovered = 1; /* to reads and writes below */ | |
353 | } | |
354 | ||
c65b1445 DG |
355 | if (devip->wlun) { |
356 | switch (*cmd) { | |
357 | case INQUIRY: | |
358 | case REQUEST_SENSE: | |
359 | case TEST_UNIT_READY: | |
360 | case REPORT_LUNS: | |
361 | break; /* only allowable wlun commands */ | |
362 | default: | |
363 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
364 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x " | |
365 | "not supported for wlun\n", *cmd); | |
366 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
367 | INVALID_OPCODE, 0); | |
368 | errsts = check_condition_result; | |
369 | return schedule_resp(SCpnt, devip, done, errsts, | |
370 | 0); | |
371 | } | |
372 | } | |
373 | ||
1da177e4 LT |
374 | switch (*cmd) { |
375 | case INQUIRY: /* mandatory, ignore unit attention */ | |
c65b1445 | 376 | delay_override = 1; |
1da177e4 LT |
377 | errsts = resp_inquiry(SCpnt, target, devip); |
378 | break; | |
379 | case REQUEST_SENSE: /* mandatory, ignore unit attention */ | |
c65b1445 | 380 | delay_override = 1; |
1da177e4 LT |
381 | errsts = resp_requests(SCpnt, devip); |
382 | break; | |
383 | case REZERO_UNIT: /* actually this is REWIND for SSC */ | |
384 | case START_STOP: | |
c65b1445 | 385 | errsts = resp_start_stop(SCpnt, devip); |
1da177e4 LT |
386 | break; |
387 | case ALLOW_MEDIUM_REMOVAL: | |
c65b1445 | 388 | if ((errsts = check_readiness(SCpnt, 1, devip))) |
1da177e4 LT |
389 | break; |
390 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
391 | printk(KERN_INFO "scsi_debug: Medium removal %s\n", | |
392 | cmd[4] ? "inhibited" : "enabled"); | |
393 | break; | |
394 | case SEND_DIAGNOSTIC: /* mandatory */ | |
c65b1445 | 395 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
396 | break; |
397 | case TEST_UNIT_READY: /* mandatory */ | |
c65b1445 DG |
398 | delay_override = 1; |
399 | errsts = check_readiness(SCpnt, 0, devip); | |
1da177e4 LT |
400 | break; |
401 | case RESERVE: | |
c65b1445 | 402 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
403 | break; |
404 | case RESERVE_10: | |
c65b1445 | 405 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
406 | break; |
407 | case RELEASE: | |
c65b1445 | 408 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
409 | break; |
410 | case RELEASE_10: | |
c65b1445 | 411 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
412 | break; |
413 | case READ_CAPACITY: | |
414 | errsts = resp_readcap(SCpnt, devip); | |
415 | break; | |
c65b1445 DG |
416 | case SERVICE_ACTION_IN: |
417 | if (SAI_READ_CAPACITY_16 != cmd[1]) { | |
418 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
419 | INVALID_OPCODE, 0); | |
420 | errsts = check_condition_result; | |
421 | break; | |
422 | } | |
423 | errsts = resp_readcap16(SCpnt, devip); | |
424 | break; | |
1da177e4 LT |
425 | case READ_16: |
426 | case READ_12: | |
427 | case READ_10: | |
428 | case READ_6: | |
c65b1445 | 429 | if ((errsts = check_readiness(SCpnt, 0, devip))) |
1da177e4 | 430 | break; |
23183910 DG |
431 | if (scsi_debug_fake_rw) |
432 | break; | |
1da177e4 | 433 | if ((*cmd) == READ_16) { |
c65b1445 DG |
434 | for (lba = 0, j = 0; j < 8; ++j) { |
435 | if (j > 0) | |
436 | lba <<= 8; | |
437 | lba += cmd[2 + j]; | |
438 | } | |
1da177e4 LT |
439 | num = cmd[13] + (cmd[12] << 8) + |
440 | (cmd[11] << 16) + (cmd[10] << 24); | |
441 | } else if ((*cmd) == READ_12) { | |
c65b1445 | 442 | lba = cmd[5] + (cmd[4] << 8) + |
1da177e4 LT |
443 | (cmd[3] << 16) + (cmd[2] << 24); |
444 | num = cmd[9] + (cmd[8] << 8) + | |
445 | (cmd[7] << 16) + (cmd[6] << 24); | |
446 | } else if ((*cmd) == READ_10) { | |
c65b1445 | 447 | lba = cmd[5] + (cmd[4] << 8) + |
1da177e4 LT |
448 | (cmd[3] << 16) + (cmd[2] << 24); |
449 | num = cmd[8] + (cmd[7] << 8); | |
c65b1445 DG |
450 | } else { /* READ (6) */ |
451 | lba = cmd[3] + (cmd[2] << 8) + | |
1da177e4 | 452 | ((cmd[1] & 0x1f) << 16); |
c65b1445 | 453 | num = (0 == cmd[4]) ? 256 : cmd[4]; |
1da177e4 | 454 | } |
c65b1445 | 455 | errsts = resp_read(SCpnt, lba, num, devip); |
1da177e4 LT |
456 | if (inj_recovered && (0 == errsts)) { |
457 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
c65b1445 | 458 | THRESHOLD_EXCEEDED, 0); |
1da177e4 LT |
459 | errsts = check_condition_result; |
460 | } | |
461 | break; | |
462 | case REPORT_LUNS: /* mandatory, ignore unit attention */ | |
c65b1445 | 463 | delay_override = 1; |
1da177e4 LT |
464 | errsts = resp_report_luns(SCpnt, devip); |
465 | break; | |
466 | case VERIFY: /* 10 byte SBC-2 command */ | |
c65b1445 | 467 | errsts = check_readiness(SCpnt, 0, devip); |
1da177e4 LT |
468 | break; |
469 | case WRITE_16: | |
470 | case WRITE_12: | |
471 | case WRITE_10: | |
472 | case WRITE_6: | |
c65b1445 | 473 | if ((errsts = check_readiness(SCpnt, 0, devip))) |
1da177e4 | 474 | break; |
23183910 DG |
475 | if (scsi_debug_fake_rw) |
476 | break; | |
1da177e4 | 477 | if ((*cmd) == WRITE_16) { |
c65b1445 DG |
478 | for (lba = 0, j = 0; j < 8; ++j) { |
479 | if (j > 0) | |
480 | lba <<= 8; | |
481 | lba += cmd[2 + j]; | |
482 | } | |
1da177e4 LT |
483 | num = cmd[13] + (cmd[12] << 8) + |
484 | (cmd[11] << 16) + (cmd[10] << 24); | |
485 | } else if ((*cmd) == WRITE_12) { | |
c65b1445 | 486 | lba = cmd[5] + (cmd[4] << 8) + |
1da177e4 LT |
487 | (cmd[3] << 16) + (cmd[2] << 24); |
488 | num = cmd[9] + (cmd[8] << 8) + | |
489 | (cmd[7] << 16) + (cmd[6] << 24); | |
490 | } else if ((*cmd) == WRITE_10) { | |
c65b1445 | 491 | lba = cmd[5] + (cmd[4] << 8) + |
1da177e4 LT |
492 | (cmd[3] << 16) + (cmd[2] << 24); |
493 | num = cmd[8] + (cmd[7] << 8); | |
c65b1445 DG |
494 | } else { /* WRITE (6) */ |
495 | lba = cmd[3] + (cmd[2] << 8) + | |
1da177e4 | 496 | ((cmd[1] & 0x1f) << 16); |
c65b1445 | 497 | num = (0 == cmd[4]) ? 256 : cmd[4]; |
1da177e4 | 498 | } |
c65b1445 | 499 | errsts = resp_write(SCpnt, lba, num, devip); |
1da177e4 LT |
500 | if (inj_recovered && (0 == errsts)) { |
501 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
c65b1445 | 502 | THRESHOLD_EXCEEDED, 0); |
1da177e4 LT |
503 | errsts = check_condition_result; |
504 | } | |
505 | break; | |
506 | case MODE_SENSE: | |
507 | case MODE_SENSE_10: | |
508 | errsts = resp_mode_sense(SCpnt, target, devip); | |
509 | break; | |
c65b1445 DG |
510 | case MODE_SELECT: |
511 | errsts = resp_mode_select(SCpnt, 1, devip); | |
512 | break; | |
513 | case MODE_SELECT_10: | |
514 | errsts = resp_mode_select(SCpnt, 0, devip); | |
515 | break; | |
516 | case LOG_SENSE: | |
517 | errsts = resp_log_sense(SCpnt, devip); | |
518 | break; | |
1da177e4 | 519 | case SYNCHRONIZE_CACHE: |
c65b1445 DG |
520 | delay_override = 1; |
521 | errsts = check_readiness(SCpnt, 0, devip); | |
1da177e4 LT |
522 | break; |
523 | default: | |
524 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
525 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " | |
526 | "supported\n", *cmd); | |
c65b1445 | 527 | if ((errsts = check_readiness(SCpnt, 1, devip))) |
1da177e4 LT |
528 | break; /* Unit attention takes precedence */ |
529 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); | |
530 | errsts = check_condition_result; | |
531 | break; | |
532 | } | |
c65b1445 DG |
533 | return schedule_resp(SCpnt, devip, done, errsts, |
534 | (delay_override ? 0 : scsi_debug_delay)); | |
1da177e4 LT |
535 | } |
536 | ||
537 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) | |
538 | { | |
539 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
540 | printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); | |
541 | } | |
542 | return -EINVAL; | |
543 | /* return -ENOTTY; // correct return but upsets fdisk */ | |
544 | } | |
545 | ||
c65b1445 DG |
546 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
547 | struct sdebug_dev_info * devip) | |
1da177e4 LT |
548 | { |
549 | if (devip->reset) { | |
550 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
551 | printk(KERN_INFO "scsi_debug: Reporting Unit " | |
552 | "attention: power on reset\n"); | |
553 | devip->reset = 0; | |
554 | mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); | |
555 | return check_condition_result; | |
556 | } | |
c65b1445 DG |
557 | if ((0 == reset_only) && devip->stopped) { |
558 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
559 | printk(KERN_INFO "scsi_debug: Reporting Not " | |
560 | "ready: initializing command required\n"); | |
561 | mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, | |
562 | 0x2); | |
563 | return check_condition_result; | |
564 | } | |
1da177e4 LT |
565 | return 0; |
566 | } | |
567 | ||
568 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ | |
569 | static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, | |
570 | int arr_len) | |
571 | { | |
572 | int k, req_len, act_len, len, active; | |
573 | void * kaddr; | |
574 | void * kaddr_off; | |
575 | struct scatterlist * sgpnt; | |
576 | ||
577 | if (0 == scp->request_bufflen) | |
578 | return 0; | |
579 | if (NULL == scp->request_buffer) | |
580 | return (DID_ERROR << 16); | |
581 | if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) || | |
582 | (scp->sc_data_direction == DMA_FROM_DEVICE))) | |
583 | return (DID_ERROR << 16); | |
584 | if (0 == scp->use_sg) { | |
585 | req_len = scp->request_bufflen; | |
586 | act_len = (req_len < arr_len) ? req_len : arr_len; | |
587 | memcpy(scp->request_buffer, arr, act_len); | |
c65b1445 DG |
588 | if (scp->resid) |
589 | scp->resid -= act_len; | |
590 | else | |
591 | scp->resid = req_len - act_len; | |
1da177e4 LT |
592 | return 0; |
593 | } | |
594 | sgpnt = (struct scatterlist *)scp->request_buffer; | |
595 | active = 1; | |
596 | for (k = 0, req_len = 0, act_len = 0; k < scp->use_sg; ++k, ++sgpnt) { | |
597 | if (active) { | |
598 | kaddr = (unsigned char *) | |
599 | kmap_atomic(sgpnt->page, KM_USER0); | |
600 | if (NULL == kaddr) | |
601 | return (DID_ERROR << 16); | |
602 | kaddr_off = (unsigned char *)kaddr + sgpnt->offset; | |
603 | len = sgpnt->length; | |
604 | if ((req_len + len) > arr_len) { | |
605 | active = 0; | |
606 | len = arr_len - req_len; | |
607 | } | |
608 | memcpy(kaddr_off, arr + req_len, len); | |
609 | kunmap_atomic(kaddr, KM_USER0); | |
610 | act_len += len; | |
611 | } | |
612 | req_len += sgpnt->length; | |
613 | } | |
c65b1445 DG |
614 | if (scp->resid) |
615 | scp->resid -= act_len; | |
616 | else | |
617 | scp->resid = req_len - act_len; | |
1da177e4 LT |
618 | return 0; |
619 | } | |
620 | ||
621 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ | |
622 | static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, | |
623 | int max_arr_len) | |
624 | { | |
625 | int k, req_len, len, fin; | |
626 | void * kaddr; | |
627 | void * kaddr_off; | |
628 | struct scatterlist * sgpnt; | |
629 | ||
630 | if (0 == scp->request_bufflen) | |
631 | return 0; | |
632 | if (NULL == scp->request_buffer) | |
633 | return -1; | |
634 | if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) || | |
635 | (scp->sc_data_direction == DMA_TO_DEVICE))) | |
636 | return -1; | |
637 | if (0 == scp->use_sg) { | |
638 | req_len = scp->request_bufflen; | |
639 | len = (req_len < max_arr_len) ? req_len : max_arr_len; | |
640 | memcpy(arr, scp->request_buffer, len); | |
641 | return len; | |
642 | } | |
643 | sgpnt = (struct scatterlist *)scp->request_buffer; | |
644 | for (k = 0, req_len = 0, fin = 0; k < scp->use_sg; ++k, ++sgpnt) { | |
645 | kaddr = (unsigned char *)kmap_atomic(sgpnt->page, KM_USER0); | |
646 | if (NULL == kaddr) | |
647 | return -1; | |
648 | kaddr_off = (unsigned char *)kaddr + sgpnt->offset; | |
649 | len = sgpnt->length; | |
650 | if ((req_len + len) > max_arr_len) { | |
651 | len = max_arr_len - req_len; | |
652 | fin = 1; | |
653 | } | |
654 | memcpy(arr + req_len, kaddr_off, len); | |
655 | kunmap_atomic(kaddr, KM_USER0); | |
656 | if (fin) | |
657 | return req_len + len; | |
658 | req_len += sgpnt->length; | |
659 | } | |
660 | return req_len; | |
661 | } | |
662 | ||
663 | ||
664 | static const char * inq_vendor_id = "Linux "; | |
665 | static const char * inq_product_id = "scsi_debug "; | |
666 | static const char * inq_product_rev = "0004"; | |
667 | ||
c65b1445 DG |
668 | static int inquiry_evpd_83(unsigned char * arr, int target_dev_id, |
669 | int dev_id_num, const char * dev_id_str, | |
670 | int dev_id_str_len) | |
1da177e4 | 671 | { |
c65b1445 DG |
672 | int num, port_a; |
673 | char b[32]; | |
1da177e4 | 674 | |
c65b1445 | 675 | port_a = target_dev_id + 1; |
1da177e4 LT |
676 | /* T10 vendor identifier field format (faked) */ |
677 | arr[0] = 0x2; /* ASCII */ | |
678 | arr[1] = 0x1; | |
679 | arr[2] = 0x0; | |
680 | memcpy(&arr[4], inq_vendor_id, 8); | |
681 | memcpy(&arr[12], inq_product_id, 16); | |
682 | memcpy(&arr[28], dev_id_str, dev_id_str_len); | |
683 | num = 8 + 16 + dev_id_str_len; | |
684 | arr[3] = num; | |
685 | num += 4; | |
c65b1445 DG |
686 | if (dev_id_num >= 0) { |
687 | /* NAA-5, Logical unit identifier (binary) */ | |
688 | arr[num++] = 0x1; /* binary (not necessarily sas) */ | |
689 | arr[num++] = 0x3; /* PIV=0, lu, naa */ | |
690 | arr[num++] = 0x0; | |
691 | arr[num++] = 0x8; | |
692 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ | |
693 | arr[num++] = 0x33; | |
694 | arr[num++] = 0x33; | |
695 | arr[num++] = 0x30; | |
696 | arr[num++] = (dev_id_num >> 24); | |
697 | arr[num++] = (dev_id_num >> 16) & 0xff; | |
698 | arr[num++] = (dev_id_num >> 8) & 0xff; | |
699 | arr[num++] = dev_id_num & 0xff; | |
700 | /* Target relative port number */ | |
701 | arr[num++] = 0x61; /* proto=sas, binary */ | |
702 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ | |
703 | arr[num++] = 0x0; /* reserved */ | |
704 | arr[num++] = 0x4; /* length */ | |
705 | arr[num++] = 0x0; /* reserved */ | |
706 | arr[num++] = 0x0; /* reserved */ | |
707 | arr[num++] = 0x0; | |
708 | arr[num++] = 0x1; /* relative port A */ | |
709 | } | |
710 | /* NAA-5, Target port identifier */ | |
711 | arr[num++] = 0x61; /* proto=sas, binary */ | |
712 | arr[num++] = 0x93; /* piv=1, target port, naa */ | |
713 | arr[num++] = 0x0; | |
714 | arr[num++] = 0x8; | |
715 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
716 | arr[num++] = 0x22; | |
717 | arr[num++] = 0x22; | |
718 | arr[num++] = 0x20; | |
719 | arr[num++] = (port_a >> 24); | |
720 | arr[num++] = (port_a >> 16) & 0xff; | |
721 | arr[num++] = (port_a >> 8) & 0xff; | |
722 | arr[num++] = port_a & 0xff; | |
723 | /* NAA-5, Target device identifier */ | |
724 | arr[num++] = 0x61; /* proto=sas, binary */ | |
725 | arr[num++] = 0xa3; /* piv=1, target device, naa */ | |
726 | arr[num++] = 0x0; | |
727 | arr[num++] = 0x8; | |
728 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
729 | arr[num++] = 0x22; | |
730 | arr[num++] = 0x22; | |
731 | arr[num++] = 0x20; | |
732 | arr[num++] = (target_dev_id >> 24); | |
733 | arr[num++] = (target_dev_id >> 16) & 0xff; | |
734 | arr[num++] = (target_dev_id >> 8) & 0xff; | |
735 | arr[num++] = target_dev_id & 0xff; | |
736 | /* SCSI name string: Target device identifier */ | |
737 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ | |
738 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ | |
739 | arr[num++] = 0x0; | |
740 | arr[num++] = 24; | |
741 | memcpy(arr + num, "naa.52222220", 12); | |
742 | num += 12; | |
743 | snprintf(b, sizeof(b), "%08X", target_dev_id); | |
744 | memcpy(arr + num, b, 8); | |
745 | num += 8; | |
746 | memset(arr + num, 0, 4); | |
747 | num += 4; | |
748 | return num; | |
749 | } | |
750 | ||
751 | ||
752 | static unsigned char vpd84_data[] = { | |
753 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, | |
754 | 0x22,0x22,0x22,0x0,0xbb,0x1, | |
755 | 0x22,0x22,0x22,0x0,0xbb,0x2, | |
756 | }; | |
757 | ||
758 | static int inquiry_evpd_84(unsigned char * arr) | |
759 | { | |
760 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); | |
761 | return sizeof(vpd84_data); | |
762 | } | |
763 | ||
764 | static int inquiry_evpd_85(unsigned char * arr) | |
765 | { | |
766 | int num = 0; | |
767 | const char * na1 = "https://www.kernel.org/config"; | |
768 | const char * na2 = "http://www.kernel.org/log"; | |
769 | int plen, olen; | |
770 | ||
771 | arr[num++] = 0x1; /* lu, storage config */ | |
772 | arr[num++] = 0x0; /* reserved */ | |
773 | arr[num++] = 0x0; | |
774 | olen = strlen(na1); | |
775 | plen = olen + 1; | |
776 | if (plen % 4) | |
777 | plen = ((plen / 4) + 1) * 4; | |
778 | arr[num++] = plen; /* length, null termianted, padded */ | |
779 | memcpy(arr + num, na1, olen); | |
780 | memset(arr + num + olen, 0, plen - olen); | |
781 | num += plen; | |
782 | ||
783 | arr[num++] = 0x4; /* lu, logging */ | |
784 | arr[num++] = 0x0; /* reserved */ | |
785 | arr[num++] = 0x0; | |
786 | olen = strlen(na2); | |
787 | plen = olen + 1; | |
788 | if (plen % 4) | |
789 | plen = ((plen / 4) + 1) * 4; | |
790 | arr[num++] = plen; /* length, null terminated, padded */ | |
791 | memcpy(arr + num, na2, olen); | |
792 | memset(arr + num + olen, 0, plen - olen); | |
793 | num += plen; | |
794 | ||
795 | return num; | |
796 | } | |
797 | ||
798 | /* SCSI ports VPD page */ | |
799 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) | |
800 | { | |
801 | int num = 0; | |
802 | int port_a, port_b; | |
803 | ||
804 | port_a = target_dev_id + 1; | |
805 | port_b = port_a + 1; | |
806 | arr[num++] = 0x0; /* reserved */ | |
807 | arr[num++] = 0x0; /* reserved */ | |
808 | arr[num++] = 0x0; | |
809 | arr[num++] = 0x1; /* relative port 1 (primary) */ | |
810 | memset(arr + num, 0, 6); | |
811 | num += 6; | |
812 | arr[num++] = 0x0; | |
813 | arr[num++] = 12; /* length tp descriptor */ | |
814 | /* naa-5 target port identifier (A) */ | |
815 | arr[num++] = 0x61; /* proto=sas, binary */ | |
816 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
817 | arr[num++] = 0x0; /* reserved */ | |
818 | arr[num++] = 0x8; /* length */ | |
819 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
820 | arr[num++] = 0x22; | |
821 | arr[num++] = 0x22; | |
822 | arr[num++] = 0x20; | |
823 | arr[num++] = (port_a >> 24); | |
824 | arr[num++] = (port_a >> 16) & 0xff; | |
825 | arr[num++] = (port_a >> 8) & 0xff; | |
826 | arr[num++] = port_a & 0xff; | |
827 | ||
828 | arr[num++] = 0x0; /* reserved */ | |
829 | arr[num++] = 0x0; /* reserved */ | |
830 | arr[num++] = 0x0; | |
831 | arr[num++] = 0x2; /* relative port 2 (secondary) */ | |
832 | memset(arr + num, 0, 6); | |
833 | num += 6; | |
834 | arr[num++] = 0x0; | |
835 | arr[num++] = 12; /* length tp descriptor */ | |
836 | /* naa-5 target port identifier (B) */ | |
837 | arr[num++] = 0x61; /* proto=sas, binary */ | |
838 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
839 | arr[num++] = 0x0; /* reserved */ | |
840 | arr[num++] = 0x8; /* length */ | |
841 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
842 | arr[num++] = 0x22; | |
843 | arr[num++] = 0x22; | |
844 | arr[num++] = 0x20; | |
845 | arr[num++] = (port_b >> 24); | |
846 | arr[num++] = (port_b >> 16) & 0xff; | |
847 | arr[num++] = (port_b >> 8) & 0xff; | |
848 | arr[num++] = port_b & 0xff; | |
849 | ||
850 | return num; | |
851 | } | |
852 | ||
853 | ||
854 | static unsigned char vpd89_data[] = { | |
855 | /* from 4th byte */ 0,0,0,0, | |
856 | 'l','i','n','u','x',' ',' ',' ', | |
857 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', | |
858 | '1','2','3','4', | |
859 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, | |
860 | 0xec,0,0,0, | |
861 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, | |
862 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, | |
863 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, | |
864 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, | |
865 | 0x53,0x41, | |
866 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
867 | 0x20,0x20, | |
868 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
869 | 0x10,0x80, | |
870 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, | |
871 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, | |
872 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, | |
873 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, | |
874 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, | |
875 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, | |
876 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, | |
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 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, | |
881 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, | |
882 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, | |
883 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,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 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
887 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
888 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
889 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
890 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
891 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
892 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
893 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
894 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
895 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, | |
896 | }; | |
897 | ||
898 | static int inquiry_evpd_89(unsigned char * arr) | |
899 | { | |
900 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); | |
901 | return sizeof(vpd89_data); | |
902 | } | |
903 | ||
904 | ||
905 | static unsigned char vpdb0_data[] = { | |
906 | /* from 4th byte */ 0,0,0,4, | |
907 | 0,0,0x4,0, | |
908 | 0,0,0,64, | |
909 | }; | |
910 | ||
911 | static int inquiry_evpd_b0(unsigned char * arr) | |
912 | { | |
913 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); | |
914 | if (sdebug_store_sectors > 0x400) { | |
915 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; | |
916 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; | |
917 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; | |
918 | arr[7] = sdebug_store_sectors & 0xff; | |
919 | } | |
920 | return sizeof(vpdb0_data); | |
1da177e4 LT |
921 | } |
922 | ||
923 | ||
924 | #define SDEBUG_LONG_INQ_SZ 96 | |
c65b1445 | 925 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
1da177e4 LT |
926 | |
927 | static int resp_inquiry(struct scsi_cmnd * scp, int target, | |
928 | struct sdebug_dev_info * devip) | |
929 | { | |
930 | unsigned char pq_pdt; | |
931 | unsigned char arr[SDEBUG_MAX_INQ_ARR_SZ]; | |
932 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
c65b1445 | 933 | int alloc_len, n; |
1da177e4 LT |
934 | |
935 | alloc_len = (cmd[3] << 8) + cmd[4]; | |
936 | memset(arr, 0, SDEBUG_MAX_INQ_ARR_SZ); | |
c65b1445 DG |
937 | if (devip->wlun) |
938 | pq_pdt = 0x1e; /* present, wlun */ | |
939 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) | |
940 | pq_pdt = 0x7f; /* not present, no device type */ | |
941 | else | |
942 | pq_pdt = (scsi_debug_ptype & 0x1f); | |
1da177e4 LT |
943 | arr[0] = pq_pdt; |
944 | if (0x2 & cmd[1]) { /* CMDDT bit set */ | |
945 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
946 | 0); | |
947 | return check_condition_result; | |
948 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ | |
c65b1445 DG |
949 | int lu_id_num, target_dev_id, len; |
950 | char lu_id_str[6]; | |
951 | int host_no = devip->sdbg_host->shost->host_no; | |
1da177e4 | 952 | |
23183910 DG |
953 | if (0 == scsi_debug_vpd_use_hostno) |
954 | host_no = 0; | |
c65b1445 DG |
955 | lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
956 | (devip->target * 1000) + devip->lun); | |
957 | target_dev_id = ((host_no + 1) * 2000) + | |
958 | (devip->target * 1000) - 3; | |
959 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); | |
1da177e4 | 960 | if (0 == cmd[2]) { /* supported vital product data pages */ |
c65b1445 DG |
961 | arr[1] = cmd[2]; /*sanity */ |
962 | n = 4; | |
963 | arr[n++] = 0x0; /* this page */ | |
964 | arr[n++] = 0x80; /* unit serial number */ | |
965 | arr[n++] = 0x83; /* device identification */ | |
966 | arr[n++] = 0x84; /* software interface ident. */ | |
967 | arr[n++] = 0x85; /* management network addresses */ | |
968 | arr[n++] = 0x86; /* extended inquiry */ | |
969 | arr[n++] = 0x87; /* mode page policy */ | |
970 | arr[n++] = 0x88; /* SCSI ports */ | |
971 | arr[n++] = 0x89; /* ATA information */ | |
972 | arr[n++] = 0xb0; /* Block limits (SBC) */ | |
973 | arr[3] = n - 4; /* number of supported VPD pages */ | |
1da177e4 | 974 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
c65b1445 | 975 | arr[1] = cmd[2]; /*sanity */ |
1da177e4 | 976 | arr[3] = len; |
c65b1445 | 977 | memcpy(&arr[4], lu_id_str, len); |
1da177e4 | 978 | } else if (0x83 == cmd[2]) { /* device identification */ |
c65b1445 DG |
979 | arr[1] = cmd[2]; /*sanity */ |
980 | arr[3] = inquiry_evpd_83(&arr[4], target_dev_id, | |
981 | lu_id_num, lu_id_str, len); | |
982 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ | |
983 | arr[1] = cmd[2]; /*sanity */ | |
984 | arr[3] = inquiry_evpd_84(&arr[4]); | |
985 | } else if (0x85 == cmd[2]) { /* Management network addresses */ | |
986 | arr[1] = cmd[2]; /*sanity */ | |
987 | arr[3] = inquiry_evpd_85(&arr[4]); | |
988 | } else if (0x86 == cmd[2]) { /* extended inquiry */ | |
989 | arr[1] = cmd[2]; /*sanity */ | |
990 | arr[3] = 0x3c; /* number of following entries */ | |
991 | arr[4] = 0x0; /* no protection stuff */ | |
992 | arr[5] = 0x7; /* head of q, ordered + simple q's */ | |
993 | } else if (0x87 == cmd[2]) { /* mode page policy */ | |
994 | arr[1] = cmd[2]; /*sanity */ | |
995 | arr[3] = 0x8; /* number of following entries */ | |
996 | arr[4] = 0x2; /* disconnect-reconnect mp */ | |
997 | arr[6] = 0x80; /* mlus, shared */ | |
998 | arr[8] = 0x18; /* protocol specific lu */ | |
999 | arr[10] = 0x82; /* mlus, per initiator port */ | |
1000 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ | |
1001 | arr[1] = cmd[2]; /*sanity */ | |
1002 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); | |
1003 | } else if (0x89 == cmd[2]) { /* ATA information */ | |
1004 | arr[1] = cmd[2]; /*sanity */ | |
1005 | n = inquiry_evpd_89(&arr[4]); | |
1006 | arr[2] = (n >> 8); | |
1007 | arr[3] = (n & 0xff); | |
1008 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ | |
1009 | arr[1] = cmd[2]; /*sanity */ | |
1010 | arr[3] = inquiry_evpd_b0(&arr[4]); | |
1da177e4 LT |
1011 | } else { |
1012 | /* Illegal request, invalid field in cdb */ | |
1013 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1014 | INVALID_FIELD_IN_CDB, 0); | |
1015 | return check_condition_result; | |
1016 | } | |
c65b1445 | 1017 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
1da177e4 | 1018 | return fill_from_dev_buffer(scp, arr, |
c65b1445 | 1019 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
1da177e4 LT |
1020 | } |
1021 | /* drops through here for a standard inquiry */ | |
1022 | arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */ | |
1023 | arr[2] = scsi_debug_scsi_level; | |
1024 | arr[3] = 2; /* response_data_format==2 */ | |
1025 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; | |
c65b1445 | 1026 | arr[6] = 0x10; /* claim: MultiP */ |
1da177e4 | 1027 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
c65b1445 | 1028 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
1da177e4 LT |
1029 | memcpy(&arr[8], inq_vendor_id, 8); |
1030 | memcpy(&arr[16], inq_product_id, 16); | |
1031 | memcpy(&arr[32], inq_product_rev, 4); | |
1032 | /* version descriptors (2 bytes each) follow */ | |
c65b1445 DG |
1033 | arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ |
1034 | arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ | |
1035 | n = 62; | |
1da177e4 | 1036 | if (scsi_debug_ptype == 0) { |
c65b1445 | 1037 | arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ |
1da177e4 | 1038 | } else if (scsi_debug_ptype == 1) { |
c65b1445 | 1039 | arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ |
1da177e4 | 1040 | } |
c65b1445 | 1041 | arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ |
1da177e4 LT |
1042 | return fill_from_dev_buffer(scp, arr, |
1043 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); | |
1044 | } | |
1045 | ||
1046 | static int resp_requests(struct scsi_cmnd * scp, | |
1047 | struct sdebug_dev_info * devip) | |
1048 | { | |
1049 | unsigned char * sbuff; | |
1050 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1051 | unsigned char arr[SDEBUG_SENSE_LEN]; | |
c65b1445 | 1052 | int want_dsense; |
1da177e4 LT |
1053 | int len = 18; |
1054 | ||
c65b1445 | 1055 | memset(arr, 0, sizeof(arr)); |
1da177e4 | 1056 | if (devip->reset == 1) |
c65b1445 DG |
1057 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
1058 | want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; | |
1da177e4 | 1059 | sbuff = devip->sense_buff; |
c65b1445 DG |
1060 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
1061 | if (want_dsense) { | |
1062 | arr[0] = 0x72; | |
1063 | arr[1] = 0x0; /* NO_SENSE in sense_key */ | |
1064 | arr[2] = THRESHOLD_EXCEEDED; | |
1065 | arr[3] = 0xff; /* TEST set and MRIE==6 */ | |
1066 | } else { | |
1067 | arr[0] = 0x70; | |
1068 | arr[2] = 0x0; /* NO_SENSE in sense_key */ | |
1069 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
1070 | arr[12] = THRESHOLD_EXCEEDED; | |
1071 | arr[13] = 0xff; /* TEST set and MRIE==6 */ | |
1072 | } | |
c65b1445 | 1073 | } else { |
1da177e4 | 1074 | memcpy(arr, sbuff, SDEBUG_SENSE_LEN); |
c65b1445 DG |
1075 | if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
1076 | /* DESC bit set and sense_buff in fixed format */ | |
1077 | memset(arr, 0, sizeof(arr)); | |
1078 | arr[0] = 0x72; | |
1079 | arr[1] = sbuff[2]; /* sense key */ | |
1080 | arr[2] = sbuff[12]; /* asc */ | |
1081 | arr[3] = sbuff[13]; /* ascq */ | |
1082 | len = 8; | |
1083 | } | |
1084 | } | |
1085 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); | |
1da177e4 LT |
1086 | return fill_from_dev_buffer(scp, arr, len); |
1087 | } | |
1088 | ||
c65b1445 DG |
1089 | static int resp_start_stop(struct scsi_cmnd * scp, |
1090 | struct sdebug_dev_info * devip) | |
1091 | { | |
1092 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1093 | int power_cond, errsts, start; | |
1094 | ||
1095 | if ((errsts = check_readiness(scp, 1, devip))) | |
1096 | return errsts; | |
1097 | power_cond = (cmd[4] & 0xf0) >> 4; | |
1098 | if (power_cond) { | |
1099 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1100 | 0); | |
1101 | return check_condition_result; | |
1102 | } | |
1103 | start = cmd[4] & 1; | |
1104 | if (start == devip->stopped) | |
1105 | devip->stopped = !start; | |
1106 | return 0; | |
1107 | } | |
1108 | ||
1da177e4 LT |
1109 | #define SDEBUG_READCAP_ARR_SZ 8 |
1110 | static int resp_readcap(struct scsi_cmnd * scp, | |
1111 | struct sdebug_dev_info * devip) | |
1112 | { | |
1113 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; | |
c65b1445 | 1114 | unsigned int capac; |
1da177e4 LT |
1115 | int errsts; |
1116 | ||
c65b1445 | 1117 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 | 1118 | return errsts; |
c65b1445 DG |
1119 | /* following just in case virtual_gb changed */ |
1120 | if (scsi_debug_virtual_gb > 0) { | |
1121 | sdebug_capacity = 2048 * 1024; | |
1122 | sdebug_capacity *= scsi_debug_virtual_gb; | |
1123 | } else | |
1124 | sdebug_capacity = sdebug_store_sectors; | |
1da177e4 | 1125 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
c65b1445 DG |
1126 | if (sdebug_capacity < 0xffffffff) { |
1127 | capac = (unsigned int)sdebug_capacity - 1; | |
1128 | arr[0] = (capac >> 24); | |
1129 | arr[1] = (capac >> 16) & 0xff; | |
1130 | arr[2] = (capac >> 8) & 0xff; | |
1131 | arr[3] = capac & 0xff; | |
1132 | } else { | |
1133 | arr[0] = 0xff; | |
1134 | arr[1] = 0xff; | |
1135 | arr[2] = 0xff; | |
1136 | arr[3] = 0xff; | |
1137 | } | |
1da177e4 LT |
1138 | arr[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
1139 | arr[7] = SECT_SIZE_PER(target) & 0xff; | |
1140 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); | |
1141 | } | |
1142 | ||
c65b1445 DG |
1143 | #define SDEBUG_READCAP16_ARR_SZ 32 |
1144 | static int resp_readcap16(struct scsi_cmnd * scp, | |
1145 | struct sdebug_dev_info * devip) | |
1146 | { | |
1147 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1148 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; | |
1149 | unsigned long long capac; | |
1150 | int errsts, k, alloc_len; | |
1151 | ||
1152 | if ((errsts = check_readiness(scp, 1, devip))) | |
1153 | return errsts; | |
1154 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) | |
1155 | + cmd[13]); | |
1156 | /* following just in case virtual_gb changed */ | |
1157 | if (scsi_debug_virtual_gb > 0) { | |
1158 | sdebug_capacity = 2048 * 1024; | |
1159 | sdebug_capacity *= scsi_debug_virtual_gb; | |
1160 | } else | |
1161 | sdebug_capacity = sdebug_store_sectors; | |
1162 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); | |
1163 | capac = sdebug_capacity - 1; | |
1164 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1165 | arr[7 - k] = capac & 0xff; | |
1166 | arr[8] = (SECT_SIZE_PER(target) >> 24) & 0xff; | |
1167 | arr[9] = (SECT_SIZE_PER(target) >> 16) & 0xff; | |
1168 | arr[10] = (SECT_SIZE_PER(target) >> 8) & 0xff; | |
1169 | arr[11] = SECT_SIZE_PER(target) & 0xff; | |
1170 | return fill_from_dev_buffer(scp, arr, | |
1171 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); | |
1172 | } | |
1173 | ||
1da177e4 LT |
1174 | /* <<Following mode page info copied from ST318451LW>> */ |
1175 | ||
1176 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) | |
1177 | { /* Read-Write Error Recovery page for mode_sense */ | |
1178 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, | |
1179 | 5, 0, 0xff, 0xff}; | |
1180 | ||
1181 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); | |
1182 | if (1 == pcontrol) | |
1183 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); | |
1184 | return sizeof(err_recov_pg); | |
1185 | } | |
1186 | ||
1187 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) | |
1188 | { /* Disconnect-Reconnect page for mode_sense */ | |
1189 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, | |
1190 | 0, 0, 0, 0, 0, 0, 0, 0}; | |
1191 | ||
1192 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); | |
1193 | if (1 == pcontrol) | |
1194 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); | |
1195 | return sizeof(disconnect_pg); | |
1196 | } | |
1197 | ||
1198 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) | |
1199 | { /* Format device page for mode_sense */ | |
1200 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, | |
1201 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1202 | 0, 0, 0, 0, 0x40, 0, 0, 0}; | |
1203 | ||
1204 | memcpy(p, format_pg, sizeof(format_pg)); | |
1205 | p[10] = (sdebug_sectors_per >> 8) & 0xff; | |
1206 | p[11] = sdebug_sectors_per & 0xff; | |
1207 | p[12] = (SECT_SIZE >> 8) & 0xff; | |
1208 | p[13] = SECT_SIZE & 0xff; | |
1209 | if (DEV_REMOVEABLE(target)) | |
1210 | p[20] |= 0x20; /* should agree with INQUIRY */ | |
1211 | if (1 == pcontrol) | |
1212 | memset(p + 2, 0, sizeof(format_pg) - 2); | |
1213 | return sizeof(format_pg); | |
1214 | } | |
1215 | ||
1216 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) | |
1217 | { /* Caching page for mode_sense */ | |
1218 | unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
1219 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; | |
1220 | ||
1221 | memcpy(p, caching_pg, sizeof(caching_pg)); | |
1222 | if (1 == pcontrol) | |
1223 | memset(p + 2, 0, sizeof(caching_pg) - 2); | |
1224 | return sizeof(caching_pg); | |
1225 | } | |
1226 | ||
1227 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) | |
1228 | { /* Control mode page for mode_sense */ | |
c65b1445 DG |
1229 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
1230 | 0, 0, 0, 0}; | |
1231 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, | |
1da177e4 LT |
1232 | 0, 0, 0x2, 0x4b}; |
1233 | ||
1234 | if (scsi_debug_dsense) | |
1235 | ctrl_m_pg[2] |= 0x4; | |
c65b1445 DG |
1236 | else |
1237 | ctrl_m_pg[2] &= ~0x4; | |
1da177e4 LT |
1238 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
1239 | if (1 == pcontrol) | |
c65b1445 DG |
1240 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
1241 | else if (2 == pcontrol) | |
1242 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); | |
1da177e4 LT |
1243 | return sizeof(ctrl_m_pg); |
1244 | } | |
1245 | ||
c65b1445 | 1246 | |
1da177e4 LT |
1247 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
1248 | { /* Informational Exceptions control mode page for mode_sense */ | |
c65b1445 DG |
1249 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
1250 | 0, 0, 0x0, 0x0}; | |
1251 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
1252 | 0, 0, 0x0, 0x0}; | |
1253 | ||
1da177e4 LT |
1254 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
1255 | if (1 == pcontrol) | |
c65b1445 DG |
1256 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
1257 | else if (2 == pcontrol) | |
1258 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); | |
1da177e4 LT |
1259 | return sizeof(iec_m_pg); |
1260 | } | |
1261 | ||
c65b1445 DG |
1262 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
1263 | { /* SAS SSP mode page - short format for mode_sense */ | |
1264 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, | |
1265 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; | |
1266 | ||
1267 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); | |
1268 | if (1 == pcontrol) | |
1269 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); | |
1270 | return sizeof(sas_sf_m_pg); | |
1271 | } | |
1272 | ||
1273 | ||
1274 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, | |
1275 | int target_dev_id) | |
1276 | { /* SAS phy control and discover mode page for mode_sense */ | |
1277 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, | |
1278 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1279 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1280 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1281 | 0x2, 0, 0, 0, 0, 0, 0, 0, | |
1282 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1283 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1284 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1285 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1286 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1287 | 0x3, 0, 0, 0, 0, 0, 0, 0, | |
1288 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1289 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1290 | }; | |
1291 | int port_a, port_b; | |
1292 | ||
1293 | port_a = target_dev_id + 1; | |
1294 | port_b = port_a + 1; | |
1295 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); | |
1296 | p[20] = (port_a >> 24); | |
1297 | p[21] = (port_a >> 16) & 0xff; | |
1298 | p[22] = (port_a >> 8) & 0xff; | |
1299 | p[23] = port_a & 0xff; | |
1300 | p[48 + 20] = (port_b >> 24); | |
1301 | p[48 + 21] = (port_b >> 16) & 0xff; | |
1302 | p[48 + 22] = (port_b >> 8) & 0xff; | |
1303 | p[48 + 23] = port_b & 0xff; | |
1304 | if (1 == pcontrol) | |
1305 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); | |
1306 | return sizeof(sas_pcd_m_pg); | |
1307 | } | |
1308 | ||
1309 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) | |
1310 | { /* SAS SSP shared protocol specific port mode subpage */ | |
1311 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, | |
1312 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1313 | }; | |
1314 | ||
1315 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); | |
1316 | if (1 == pcontrol) | |
1317 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); | |
1318 | return sizeof(sas_sha_m_pg); | |
1319 | } | |
1320 | ||
1da177e4 LT |
1321 | #define SDEBUG_MAX_MSENSE_SZ 256 |
1322 | ||
1323 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, | |
1324 | struct sdebug_dev_info * devip) | |
1325 | { | |
23183910 DG |
1326 | unsigned char dbd, llbaa; |
1327 | int pcontrol, pcode, subpcode, bd_len; | |
1da177e4 | 1328 | unsigned char dev_spec; |
23183910 | 1329 | int k, alloc_len, msense_6, offset, len, errsts, target_dev_id; |
1da177e4 LT |
1330 | unsigned char * ap; |
1331 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; | |
1332 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1333 | ||
c65b1445 | 1334 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 | 1335 | return errsts; |
23183910 | 1336 | dbd = !!(cmd[1] & 0x8); |
1da177e4 LT |
1337 | pcontrol = (cmd[2] & 0xc0) >> 6; |
1338 | pcode = cmd[2] & 0x3f; | |
1339 | subpcode = cmd[3]; | |
1340 | msense_6 = (MODE_SENSE == cmd[0]); | |
23183910 DG |
1341 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
1342 | if ((0 == scsi_debug_ptype) && (0 == dbd)) | |
1343 | bd_len = llbaa ? 16 : 8; | |
1344 | else | |
1345 | bd_len = 0; | |
1da177e4 LT |
1346 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
1347 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); | |
1348 | if (0x3 == pcontrol) { /* Saving values not supported */ | |
1349 | mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, | |
1350 | 0); | |
1351 | return check_condition_result; | |
1352 | } | |
c65b1445 DG |
1353 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
1354 | (devip->target * 1000) - 3; | |
23183910 DG |
1355 | /* set DPOFUA bit for disks */ |
1356 | if (0 == scsi_debug_ptype) | |
1357 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; | |
1358 | else | |
1359 | dev_spec = 0x0; | |
1da177e4 LT |
1360 | if (msense_6) { |
1361 | arr[2] = dev_spec; | |
23183910 | 1362 | arr[3] = bd_len; |
1da177e4 LT |
1363 | offset = 4; |
1364 | } else { | |
1365 | arr[3] = dev_spec; | |
23183910 DG |
1366 | if (16 == bd_len) |
1367 | arr[4] = 0x1; /* set LONGLBA bit */ | |
1368 | arr[7] = bd_len; /* assume 255 or less */ | |
1da177e4 LT |
1369 | offset = 8; |
1370 | } | |
1371 | ap = arr + offset; | |
23183910 DG |
1372 | if ((bd_len > 0) && (0 == sdebug_capacity)) { |
1373 | if (scsi_debug_virtual_gb > 0) { | |
1374 | sdebug_capacity = 2048 * 1024; | |
1375 | sdebug_capacity *= scsi_debug_virtual_gb; | |
1376 | } else | |
1377 | sdebug_capacity = sdebug_store_sectors; | |
1378 | } | |
1379 | if (8 == bd_len) { | |
1380 | if (sdebug_capacity > 0xfffffffe) { | |
1381 | ap[0] = 0xff; | |
1382 | ap[1] = 0xff; | |
1383 | ap[2] = 0xff; | |
1384 | ap[3] = 0xff; | |
1385 | } else { | |
1386 | ap[0] = (sdebug_capacity >> 24) & 0xff; | |
1387 | ap[1] = (sdebug_capacity >> 16) & 0xff; | |
1388 | ap[2] = (sdebug_capacity >> 8) & 0xff; | |
1389 | ap[3] = sdebug_capacity & 0xff; | |
1390 | } | |
1391 | ap[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; | |
1392 | ap[7] = SECT_SIZE_PER(target) & 0xff; | |
1393 | offset += bd_len; | |
1394 | ap = arr + offset; | |
1395 | } else if (16 == bd_len) { | |
1396 | unsigned long long capac = sdebug_capacity; | |
1397 | ||
1398 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1399 | ap[7 - k] = capac & 0xff; | |
1400 | ap[12] = (SECT_SIZE_PER(target) >> 24) & 0xff; | |
1401 | ap[13] = (SECT_SIZE_PER(target) >> 16) & 0xff; | |
1402 | ap[14] = (SECT_SIZE_PER(target) >> 8) & 0xff; | |
1403 | ap[15] = SECT_SIZE_PER(target) & 0xff; | |
1404 | offset += bd_len; | |
1405 | ap = arr + offset; | |
1406 | } | |
1da177e4 | 1407 | |
c65b1445 DG |
1408 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
1409 | /* TODO: Control Extension page */ | |
1da177e4 LT |
1410 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1411 | 0); | |
1412 | return check_condition_result; | |
1413 | } | |
1414 | switch (pcode) { | |
1415 | case 0x1: /* Read-Write error recovery page, direct access */ | |
1416 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1417 | offset += len; | |
1418 | break; | |
1419 | case 0x2: /* Disconnect-Reconnect page, all devices */ | |
1420 | len = resp_disconnect_pg(ap, pcontrol, target); | |
1421 | offset += len; | |
1422 | break; | |
1423 | case 0x3: /* Format device page, direct access */ | |
1424 | len = resp_format_pg(ap, pcontrol, target); | |
1425 | offset += len; | |
1426 | break; | |
1427 | case 0x8: /* Caching page, direct access */ | |
1428 | len = resp_caching_pg(ap, pcontrol, target); | |
1429 | offset += len; | |
1430 | break; | |
1431 | case 0xa: /* Control Mode page, all devices */ | |
1432 | len = resp_ctrl_m_pg(ap, pcontrol, target); | |
1433 | offset += len; | |
1434 | break; | |
c65b1445 DG |
1435 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
1436 | if ((subpcode > 0x2) && (subpcode < 0xff)) { | |
1437 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1438 | INVALID_FIELD_IN_CDB, 0); | |
1439 | return check_condition_result; | |
1440 | } | |
1441 | len = 0; | |
1442 | if ((0x0 == subpcode) || (0xff == subpcode)) | |
1443 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1444 | if ((0x1 == subpcode) || (0xff == subpcode)) | |
1445 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, | |
1446 | target_dev_id); | |
1447 | if ((0x2 == subpcode) || (0xff == subpcode)) | |
1448 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1449 | offset += len; | |
1450 | break; | |
1da177e4 LT |
1451 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
1452 | len = resp_iec_m_pg(ap, pcontrol, target); | |
1453 | offset += len; | |
1454 | break; | |
1455 | case 0x3f: /* Read all Mode pages */ | |
c65b1445 DG |
1456 | if ((0 == subpcode) || (0xff == subpcode)) { |
1457 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1458 | len += resp_disconnect_pg(ap + len, pcontrol, target); | |
1459 | len += resp_format_pg(ap + len, pcontrol, target); | |
1460 | len += resp_caching_pg(ap + len, pcontrol, target); | |
1461 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); | |
1462 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1463 | if (0xff == subpcode) { | |
1464 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, | |
1465 | target, target_dev_id); | |
1466 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1467 | } | |
1468 | len += resp_iec_m_pg(ap + len, pcontrol, target); | |
1469 | } else { | |
1470 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1471 | INVALID_FIELD_IN_CDB, 0); | |
1472 | return check_condition_result; | |
1473 | } | |
1da177e4 LT |
1474 | offset += len; |
1475 | break; | |
1476 | default: | |
1477 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1478 | 0); | |
1479 | return check_condition_result; | |
1480 | } | |
1481 | if (msense_6) | |
1482 | arr[0] = offset - 1; | |
1483 | else { | |
1484 | arr[0] = ((offset - 2) >> 8) & 0xff; | |
1485 | arr[1] = (offset - 2) & 0xff; | |
1486 | } | |
1487 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); | |
1488 | } | |
1489 | ||
c65b1445 DG |
1490 | #define SDEBUG_MAX_MSELECT_SZ 512 |
1491 | ||
1492 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, | |
1493 | struct sdebug_dev_info * devip) | |
1494 | { | |
1495 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; | |
1496 | int param_len, res, errsts, mpage; | |
1497 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; | |
1498 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1499 | ||
1500 | if ((errsts = check_readiness(scp, 1, devip))) | |
1501 | return errsts; | |
1502 | memset(arr, 0, sizeof(arr)); | |
1503 | pf = cmd[1] & 0x10; | |
1504 | sp = cmd[1] & 0x1; | |
1505 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); | |
1506 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { | |
1507 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1508 | INVALID_FIELD_IN_CDB, 0); | |
1509 | return check_condition_result; | |
1510 | } | |
1511 | res = fetch_to_dev_buffer(scp, arr, param_len); | |
1512 | if (-1 == res) | |
1513 | return (DID_ERROR << 16); | |
1514 | else if ((res < param_len) && | |
1515 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
1516 | printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " | |
1517 | " IO sent=%d bytes\n", param_len, res); | |
1518 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); | |
1519 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); | |
23183910 | 1520 | if (md_len > 2) { |
c65b1445 DG |
1521 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
1522 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1523 | return check_condition_result; | |
1524 | } | |
1525 | off = bd_len + (mselect6 ? 4 : 8); | |
1526 | mpage = arr[off] & 0x3f; | |
1527 | ps = !!(arr[off] & 0x80); | |
1528 | if (ps) { | |
1529 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1530 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1531 | return check_condition_result; | |
1532 | } | |
1533 | spf = !!(arr[off] & 0x40); | |
1534 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : | |
1535 | (arr[off + 1] + 2); | |
1536 | if ((pg_len + off) > param_len) { | |
1537 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1538 | PARAMETER_LIST_LENGTH_ERR, 0); | |
1539 | return check_condition_result; | |
1540 | } | |
1541 | switch (mpage) { | |
1542 | case 0xa: /* Control Mode page */ | |
1543 | if (ctrl_m_pg[1] == arr[off + 1]) { | |
1544 | memcpy(ctrl_m_pg + 2, arr + off + 2, | |
1545 | sizeof(ctrl_m_pg) - 2); | |
1546 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); | |
1547 | return 0; | |
1548 | } | |
1549 | break; | |
1550 | case 0x1c: /* Informational Exceptions Mode page */ | |
1551 | if (iec_m_pg[1] == arr[off + 1]) { | |
1552 | memcpy(iec_m_pg + 2, arr + off + 2, | |
1553 | sizeof(iec_m_pg) - 2); | |
1554 | return 0; | |
1555 | } | |
1556 | break; | |
1557 | default: | |
1558 | break; | |
1559 | } | |
1560 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1561 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1562 | return check_condition_result; | |
1563 | } | |
1564 | ||
1565 | static int resp_temp_l_pg(unsigned char * arr) | |
1566 | { | |
1567 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, | |
1568 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, | |
1569 | }; | |
1570 | ||
1571 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); | |
1572 | return sizeof(temp_l_pg); | |
1573 | } | |
1574 | ||
1575 | static int resp_ie_l_pg(unsigned char * arr) | |
1576 | { | |
1577 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, | |
1578 | }; | |
1579 | ||
1580 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); | |
1581 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ | |
1582 | arr[4] = THRESHOLD_EXCEEDED; | |
1583 | arr[5] = 0xff; | |
1584 | } | |
1585 | return sizeof(ie_l_pg); | |
1586 | } | |
1587 | ||
1588 | #define SDEBUG_MAX_LSENSE_SZ 512 | |
1589 | ||
1590 | static int resp_log_sense(struct scsi_cmnd * scp, | |
1591 | struct sdebug_dev_info * devip) | |
1592 | { | |
23183910 | 1593 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n; |
c65b1445 DG |
1594 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
1595 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1596 | ||
1597 | if ((errsts = check_readiness(scp, 1, devip))) | |
1598 | return errsts; | |
1599 | memset(arr, 0, sizeof(arr)); | |
1600 | ppc = cmd[1] & 0x2; | |
1601 | sp = cmd[1] & 0x1; | |
1602 | if (ppc || sp) { | |
1603 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1604 | INVALID_FIELD_IN_CDB, 0); | |
1605 | return check_condition_result; | |
1606 | } | |
1607 | pcontrol = (cmd[2] & 0xc0) >> 6; | |
1608 | pcode = cmd[2] & 0x3f; | |
23183910 | 1609 | subpcode = cmd[3] & 0xff; |
c65b1445 DG |
1610 | alloc_len = (cmd[7] << 8) + cmd[8]; |
1611 | arr[0] = pcode; | |
23183910 DG |
1612 | if (0 == subpcode) { |
1613 | switch (pcode) { | |
1614 | case 0x0: /* Supported log pages log page */ | |
1615 | n = 4; | |
1616 | arr[n++] = 0x0; /* this page */ | |
1617 | arr[n++] = 0xd; /* Temperature */ | |
1618 | arr[n++] = 0x2f; /* Informational exceptions */ | |
1619 | arr[3] = n - 4; | |
1620 | break; | |
1621 | case 0xd: /* Temperature log page */ | |
1622 | arr[3] = resp_temp_l_pg(arr + 4); | |
1623 | break; | |
1624 | case 0x2f: /* Informational exceptions log page */ | |
1625 | arr[3] = resp_ie_l_pg(arr + 4); | |
1626 | break; | |
1627 | default: | |
1628 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1629 | INVALID_FIELD_IN_CDB, 0); | |
1630 | return check_condition_result; | |
1631 | } | |
1632 | } else if (0xff == subpcode) { | |
1633 | arr[0] |= 0x40; | |
1634 | arr[1] = subpcode; | |
1635 | switch (pcode) { | |
1636 | case 0x0: /* Supported log pages and subpages log page */ | |
1637 | n = 4; | |
1638 | arr[n++] = 0x0; | |
1639 | arr[n++] = 0x0; /* 0,0 page */ | |
1640 | arr[n++] = 0x0; | |
1641 | arr[n++] = 0xff; /* this page */ | |
1642 | arr[n++] = 0xd; | |
1643 | arr[n++] = 0x0; /* Temperature */ | |
1644 | arr[n++] = 0x2f; | |
1645 | arr[n++] = 0x0; /* Informational exceptions */ | |
1646 | arr[3] = n - 4; | |
1647 | break; | |
1648 | case 0xd: /* Temperature subpages */ | |
1649 | n = 4; | |
1650 | arr[n++] = 0xd; | |
1651 | arr[n++] = 0x0; /* Temperature */ | |
1652 | arr[3] = n - 4; | |
1653 | break; | |
1654 | case 0x2f: /* Informational exceptions subpages */ | |
1655 | n = 4; | |
1656 | arr[n++] = 0x2f; | |
1657 | arr[n++] = 0x0; /* Informational exceptions */ | |
1658 | arr[3] = n - 4; | |
1659 | break; | |
1660 | default: | |
1661 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1662 | INVALID_FIELD_IN_CDB, 0); | |
1663 | return check_condition_result; | |
1664 | } | |
1665 | } else { | |
c65b1445 DG |
1666 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
1667 | INVALID_FIELD_IN_CDB, 0); | |
1668 | return check_condition_result; | |
1669 | } | |
1670 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); | |
1671 | return fill_from_dev_buffer(scp, arr, | |
1672 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); | |
1673 | } | |
1674 | ||
1675 | static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, | |
1676 | unsigned int num, struct sdebug_dev_info * devip) | |
1da177e4 LT |
1677 | { |
1678 | unsigned long iflags; | |
c65b1445 DG |
1679 | unsigned int block, from_bottom; |
1680 | unsigned long long u; | |
1da177e4 LT |
1681 | int ret; |
1682 | ||
c65b1445 | 1683 | if (lba + num > sdebug_capacity) { |
1da177e4 LT |
1684 | mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, |
1685 | 0); | |
1686 | return check_condition_result; | |
1687 | } | |
c65b1445 DG |
1688 | /* transfer length excessive (tie in to block limits VPD page) */ |
1689 | if (num > sdebug_store_sectors) { | |
1690 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1691 | 0); | |
1692 | return check_condition_result; | |
1693 | } | |
1da177e4 | 1694 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
c65b1445 DG |
1695 | (lba <= OPT_MEDIUM_ERR_ADDR) && |
1696 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { | |
1697 | /* claim unrecoverable read error */ | |
1da177e4 LT |
1698 | mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, |
1699 | 0); | |
c65b1445 DG |
1700 | /* set info field and valid bit for fixed descriptor */ |
1701 | if (0x70 == (devip->sense_buff[0] & 0x7f)) { | |
1702 | devip->sense_buff[0] |= 0x80; /* Valid bit */ | |
1703 | ret = OPT_MEDIUM_ERR_ADDR; | |
1704 | devip->sense_buff[3] = (ret >> 24) & 0xff; | |
1705 | devip->sense_buff[4] = (ret >> 16) & 0xff; | |
1706 | devip->sense_buff[5] = (ret >> 8) & 0xff; | |
1707 | devip->sense_buff[6] = ret & 0xff; | |
1708 | } | |
1da177e4 LT |
1709 | return check_condition_result; |
1710 | } | |
1711 | read_lock_irqsave(&atomic_rw, iflags); | |
c65b1445 DG |
1712 | if ((lba + num) <= sdebug_store_sectors) |
1713 | ret = fill_from_dev_buffer(SCpnt, | |
1714 | fake_storep + (lba * SECT_SIZE), | |
1715 | num * SECT_SIZE); | |
1716 | else { | |
1717 | /* modulo when one arg is 64 bits needs do_div() */ | |
1718 | u = lba; | |
1719 | block = do_div(u, sdebug_store_sectors); | |
1720 | from_bottom = 0; | |
1721 | if ((block + num) > sdebug_store_sectors) | |
1722 | from_bottom = (block + num) - sdebug_store_sectors; | |
1723 | ret = fill_from_dev_buffer(SCpnt, | |
1724 | fake_storep + (block * SECT_SIZE), | |
1725 | (num - from_bottom) * SECT_SIZE); | |
1726 | if ((0 == ret) && (from_bottom > 0)) | |
1727 | ret = fill_from_dev_buffer(SCpnt, fake_storep, | |
1728 | from_bottom * SECT_SIZE); | |
1729 | } | |
1da177e4 LT |
1730 | read_unlock_irqrestore(&atomic_rw, iflags); |
1731 | return ret; | |
1732 | } | |
1733 | ||
c65b1445 DG |
1734 | static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, |
1735 | unsigned int num, struct sdebug_dev_info * devip) | |
1da177e4 LT |
1736 | { |
1737 | unsigned long iflags; | |
c65b1445 DG |
1738 | unsigned int block, to_bottom; |
1739 | unsigned long long u; | |
1da177e4 LT |
1740 | int res; |
1741 | ||
c65b1445 | 1742 | if (lba + num > sdebug_capacity) { |
1da177e4 LT |
1743 | mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, |
1744 | 0); | |
1745 | return check_condition_result; | |
1746 | } | |
c65b1445 DG |
1747 | /* transfer length excessive (tie in to block limits VPD page) */ |
1748 | if (num > sdebug_store_sectors) { | |
1749 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1750 | 0); | |
1751 | return check_condition_result; | |
1752 | } | |
1da177e4 LT |
1753 | |
1754 | write_lock_irqsave(&atomic_rw, iflags); | |
c65b1445 DG |
1755 | if ((lba + num) <= sdebug_store_sectors) |
1756 | res = fetch_to_dev_buffer(SCpnt, | |
1757 | fake_storep + (lba * SECT_SIZE), | |
1758 | num * SECT_SIZE); | |
1759 | else { | |
1760 | /* modulo when one arg is 64 bits needs do_div() */ | |
1761 | u = lba; | |
1762 | block = do_div(u, sdebug_store_sectors); | |
1763 | to_bottom = 0; | |
1764 | if ((block + num) > sdebug_store_sectors) | |
1765 | to_bottom = (block + num) - sdebug_store_sectors; | |
1766 | res = fetch_to_dev_buffer(SCpnt, | |
1767 | fake_storep + (block * SECT_SIZE), | |
1768 | (num - to_bottom) * SECT_SIZE); | |
1769 | if ((0 == res) && (to_bottom > 0)) | |
1770 | res = fetch_to_dev_buffer(SCpnt, fake_storep, | |
1771 | to_bottom * SECT_SIZE); | |
1772 | } | |
1da177e4 LT |
1773 | write_unlock_irqrestore(&atomic_rw, iflags); |
1774 | if (-1 == res) | |
1775 | return (DID_ERROR << 16); | |
1776 | else if ((res < (num * SECT_SIZE)) && | |
1777 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
c65b1445 | 1778 | printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " |
1da177e4 LT |
1779 | " IO sent=%d bytes\n", num * SECT_SIZE, res); |
1780 | return 0; | |
1781 | } | |
1782 | ||
c65b1445 | 1783 | #define SDEBUG_RLUN_ARR_SZ 256 |
1da177e4 LT |
1784 | |
1785 | static int resp_report_luns(struct scsi_cmnd * scp, | |
1786 | struct sdebug_dev_info * devip) | |
1787 | { | |
1788 | unsigned int alloc_len; | |
c65b1445 | 1789 | int lun_cnt, i, upper, num, n, wlun, lun; |
1da177e4 LT |
1790 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
1791 | int select_report = (int)cmd[2]; | |
1792 | struct scsi_lun *one_lun; | |
1793 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; | |
c65b1445 | 1794 | unsigned char * max_addr; |
1da177e4 LT |
1795 | |
1796 | alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); | |
c65b1445 | 1797 | if ((alloc_len < 4) || (select_report > 2)) { |
1da177e4 LT |
1798 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1799 | 0); | |
1800 | return check_condition_result; | |
1801 | } | |
1802 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ | |
1803 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); | |
1804 | lun_cnt = scsi_debug_max_luns; | |
c65b1445 DG |
1805 | if (1 == select_report) |
1806 | lun_cnt = 0; | |
1807 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) | |
1808 | --lun_cnt; | |
1809 | wlun = (select_report > 0) ? 1 : 0; | |
1810 | num = lun_cnt + wlun; | |
1811 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; | |
1812 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; | |
1813 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / | |
1814 | sizeof(struct scsi_lun)), num); | |
1815 | if (n < num) { | |
1816 | wlun = 0; | |
1817 | lun_cnt = n; | |
1818 | } | |
1da177e4 | 1819 | one_lun = (struct scsi_lun *) &arr[8]; |
c65b1445 DG |
1820 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
1821 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); | |
1822 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); | |
1823 | i++, lun++) { | |
1824 | upper = (lun >> 8) & 0x3f; | |
1da177e4 LT |
1825 | if (upper) |
1826 | one_lun[i].scsi_lun[0] = | |
1827 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); | |
c65b1445 DG |
1828 | one_lun[i].scsi_lun[1] = lun & 0xff; |
1829 | } | |
1830 | if (wlun) { | |
1831 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; | |
1832 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; | |
1833 | i++; | |
1da177e4 | 1834 | } |
c65b1445 | 1835 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
1da177e4 LT |
1836 | return fill_from_dev_buffer(scp, arr, |
1837 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); | |
1838 | } | |
1839 | ||
1840 | /* When timer goes off this function is called. */ | |
1841 | static void timer_intr_handler(unsigned long indx) | |
1842 | { | |
1843 | struct sdebug_queued_cmd * sqcp; | |
1844 | unsigned long iflags; | |
1845 | ||
1846 | if (indx >= SCSI_DEBUG_CANQUEUE) { | |
1847 | printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " | |
1848 | "large\n"); | |
1849 | return; | |
1850 | } | |
1851 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
1852 | sqcp = &queued_arr[(int)indx]; | |
1853 | if (! sqcp->in_use) { | |
1854 | printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected " | |
1855 | "interrupt\n"); | |
1856 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1857 | return; | |
1858 | } | |
1859 | sqcp->in_use = 0; | |
1860 | if (sqcp->done_funct) { | |
1861 | sqcp->a_cmnd->result = sqcp->scsi_result; | |
1862 | sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */ | |
1863 | } | |
1864 | sqcp->done_funct = NULL; | |
1865 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
1866 | } | |
1867 | ||
1868 | static int scsi_debug_slave_alloc(struct scsi_device * sdp) | |
1869 | { | |
1870 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
c65b1445 DG |
1871 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", |
1872 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
1da177e4 LT |
1873 | return 0; |
1874 | } | |
1875 | ||
1876 | static int scsi_debug_slave_configure(struct scsi_device * sdp) | |
1877 | { | |
1878 | struct sdebug_dev_info * devip; | |
1879 | ||
1880 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
c65b1445 DG |
1881 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", |
1882 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
1da177e4 LT |
1883 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) |
1884 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; | |
1885 | devip = devInfoReg(sdp); | |
1886 | sdp->hostdata = devip; | |
1887 | if (sdp->host->cmd_per_lun) | |
1888 | scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, | |
1889 | sdp->host->cmd_per_lun); | |
c65b1445 | 1890 | blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); |
1da177e4 LT |
1891 | return 0; |
1892 | } | |
1893 | ||
1894 | static void scsi_debug_slave_destroy(struct scsi_device * sdp) | |
1895 | { | |
1896 | struct sdebug_dev_info * devip = | |
1897 | (struct sdebug_dev_info *)sdp->hostdata; | |
1898 | ||
1899 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
c65b1445 DG |
1900 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", |
1901 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
1da177e4 LT |
1902 | if (devip) { |
1903 | /* make this slot avaliable for re-use */ | |
1904 | devip->used = 0; | |
1905 | sdp->hostdata = NULL; | |
1906 | } | |
1907 | } | |
1908 | ||
1909 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) | |
1910 | { | |
1911 | struct sdebug_host_info * sdbg_host; | |
1912 | struct sdebug_dev_info * open_devip = NULL; | |
1913 | struct sdebug_dev_info * devip = | |
1914 | (struct sdebug_dev_info *)sdev->hostdata; | |
1915 | ||
1916 | if (devip) | |
1917 | return devip; | |
1918 | sdbg_host = *(struct sdebug_host_info **) sdev->host->hostdata; | |
1919 | if(! sdbg_host) { | |
1920 | printk(KERN_ERR "Host info NULL\n"); | |
1921 | return NULL; | |
1922 | } | |
1923 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { | |
1924 | if ((devip->used) && (devip->channel == sdev->channel) && | |
1925 | (devip->target == sdev->id) && | |
1926 | (devip->lun == sdev->lun)) | |
1927 | return devip; | |
1928 | else { | |
1929 | if ((!devip->used) && (!open_devip)) | |
1930 | open_devip = devip; | |
1931 | } | |
1932 | } | |
1933 | if (NULL == open_devip) { /* try and make a new one */ | |
24669f75 | 1934 | open_devip = kzalloc(sizeof(*open_devip),GFP_KERNEL); |
1da177e4 LT |
1935 | if (NULL == open_devip) { |
1936 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
1937 | __FUNCTION__, __LINE__); | |
1938 | return NULL; | |
1939 | } | |
1da177e4 LT |
1940 | open_devip->sdbg_host = sdbg_host; |
1941 | list_add_tail(&open_devip->dev_list, | |
1942 | &sdbg_host->dev_info_list); | |
1943 | } | |
1944 | if (open_devip) { | |
1945 | open_devip->channel = sdev->channel; | |
1946 | open_devip->target = sdev->id; | |
1947 | open_devip->lun = sdev->lun; | |
1948 | open_devip->sdbg_host = sdbg_host; | |
1949 | open_devip->reset = 1; | |
1950 | open_devip->used = 1; | |
1951 | memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); | |
1952 | if (scsi_debug_dsense) | |
1953 | open_devip->sense_buff[0] = 0x72; | |
1954 | else { | |
1955 | open_devip->sense_buff[0] = 0x70; | |
1956 | open_devip->sense_buff[7] = 0xa; | |
1957 | } | |
c65b1445 DG |
1958 | if (sdev->lun == SAM2_WLUN_REPORT_LUNS) |
1959 | open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; | |
1da177e4 LT |
1960 | return open_devip; |
1961 | } | |
1962 | return NULL; | |
1963 | } | |
1964 | ||
1965 | static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, | |
1966 | int asc, int asq) | |
1967 | { | |
1968 | unsigned char * sbuff; | |
1969 | ||
1970 | sbuff = devip->sense_buff; | |
1971 | memset(sbuff, 0, SDEBUG_SENSE_LEN); | |
1972 | if (scsi_debug_dsense) { | |
1973 | sbuff[0] = 0x72; /* descriptor, current */ | |
1974 | sbuff[1] = key; | |
1975 | sbuff[2] = asc; | |
1976 | sbuff[3] = asq; | |
1977 | } else { | |
1978 | sbuff[0] = 0x70; /* fixed, current */ | |
1979 | sbuff[2] = key; | |
1980 | sbuff[7] = 0xa; /* implies 18 byte sense buffer */ | |
1981 | sbuff[12] = asc; | |
1982 | sbuff[13] = asq; | |
1983 | } | |
1984 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1985 | printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " | |
1986 | "[0x%x,0x%x,0x%x]\n", key, asc, asq); | |
1987 | } | |
1988 | ||
1989 | static int scsi_debug_abort(struct scsi_cmnd * SCpnt) | |
1990 | { | |
1991 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
1992 | printk(KERN_INFO "scsi_debug: abort\n"); | |
1993 | ++num_aborts; | |
1994 | stop_queued_cmnd(SCpnt); | |
1995 | return SUCCESS; | |
1996 | } | |
1997 | ||
1998 | static int scsi_debug_biosparam(struct scsi_device *sdev, | |
1999 | struct block_device * bdev, sector_t capacity, int *info) | |
2000 | { | |
2001 | int res; | |
2002 | unsigned char *buf; | |
2003 | ||
2004 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2005 | printk(KERN_INFO "scsi_debug: biosparam\n"); | |
2006 | buf = scsi_bios_ptable(bdev); | |
2007 | if (buf) { | |
2008 | res = scsi_partsize(buf, capacity, | |
2009 | &info[2], &info[0], &info[1]); | |
2010 | kfree(buf); | |
2011 | if (! res) | |
2012 | return res; | |
2013 | } | |
2014 | info[0] = sdebug_heads; | |
2015 | info[1] = sdebug_sectors_per; | |
2016 | info[2] = sdebug_cylinders_per; | |
2017 | return 0; | |
2018 | } | |
2019 | ||
2020 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) | |
2021 | { | |
2022 | struct sdebug_dev_info * devip; | |
2023 | ||
2024 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2025 | printk(KERN_INFO "scsi_debug: device_reset\n"); | |
2026 | ++num_dev_resets; | |
2027 | if (SCpnt) { | |
2028 | devip = devInfoReg(SCpnt->device); | |
2029 | if (devip) | |
2030 | devip->reset = 1; | |
2031 | } | |
2032 | return SUCCESS; | |
2033 | } | |
2034 | ||
2035 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) | |
2036 | { | |
2037 | struct sdebug_host_info *sdbg_host; | |
2038 | struct sdebug_dev_info * dev_info; | |
2039 | struct scsi_device * sdp; | |
2040 | struct Scsi_Host * hp; | |
2041 | ||
2042 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2043 | printk(KERN_INFO "scsi_debug: bus_reset\n"); | |
2044 | ++num_bus_resets; | |
2045 | if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { | |
2046 | sdbg_host = *(struct sdebug_host_info **) hp->hostdata; | |
2047 | if (sdbg_host) { | |
2048 | list_for_each_entry(dev_info, | |
2049 | &sdbg_host->dev_info_list, | |
2050 | dev_list) | |
2051 | dev_info->reset = 1; | |
2052 | } | |
2053 | } | |
2054 | return SUCCESS; | |
2055 | } | |
2056 | ||
2057 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) | |
2058 | { | |
2059 | struct sdebug_host_info * sdbg_host; | |
2060 | struct sdebug_dev_info * dev_info; | |
2061 | ||
2062 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2063 | printk(KERN_INFO "scsi_debug: host_reset\n"); | |
2064 | ++num_host_resets; | |
2065 | spin_lock(&sdebug_host_list_lock); | |
2066 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
2067 | list_for_each_entry(dev_info, &sdbg_host->dev_info_list, | |
2068 | dev_list) | |
2069 | dev_info->reset = 1; | |
2070 | } | |
2071 | spin_unlock(&sdebug_host_list_lock); | |
2072 | stop_all_queued(); | |
2073 | return SUCCESS; | |
2074 | } | |
2075 | ||
2076 | /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ | |
2077 | static int stop_queued_cmnd(struct scsi_cmnd * cmnd) | |
2078 | { | |
2079 | unsigned long iflags; | |
2080 | int k; | |
2081 | struct sdebug_queued_cmd * sqcp; | |
2082 | ||
2083 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2084 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2085 | sqcp = &queued_arr[k]; | |
2086 | if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { | |
2087 | del_timer_sync(&sqcp->cmnd_timer); | |
2088 | sqcp->in_use = 0; | |
2089 | sqcp->a_cmnd = NULL; | |
2090 | break; | |
2091 | } | |
2092 | } | |
2093 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2094 | return (k < SCSI_DEBUG_CANQUEUE) ? 1 : 0; | |
2095 | } | |
2096 | ||
2097 | /* Deletes (stops) timers of all queued commands */ | |
2098 | static void stop_all_queued(void) | |
2099 | { | |
2100 | unsigned long iflags; | |
2101 | int k; | |
2102 | struct sdebug_queued_cmd * sqcp; | |
2103 | ||
2104 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2105 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2106 | sqcp = &queued_arr[k]; | |
2107 | if (sqcp->in_use && sqcp->a_cmnd) { | |
2108 | del_timer_sync(&sqcp->cmnd_timer); | |
2109 | sqcp->in_use = 0; | |
2110 | sqcp->a_cmnd = NULL; | |
2111 | } | |
2112 | } | |
2113 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2114 | } | |
2115 | ||
2116 | /* Initializes timers in queued array */ | |
2117 | static void __init init_all_queued(void) | |
2118 | { | |
2119 | unsigned long iflags; | |
2120 | int k; | |
2121 | struct sdebug_queued_cmd * sqcp; | |
2122 | ||
2123 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2124 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2125 | sqcp = &queued_arr[k]; | |
2126 | init_timer(&sqcp->cmnd_timer); | |
2127 | sqcp->in_use = 0; | |
2128 | sqcp->a_cmnd = NULL; | |
2129 | } | |
2130 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2131 | } | |
2132 | ||
2133 | static void __init sdebug_build_parts(unsigned char * ramp) | |
2134 | { | |
2135 | struct partition * pp; | |
2136 | int starts[SDEBUG_MAX_PARTS + 2]; | |
2137 | int sectors_per_part, num_sectors, k; | |
2138 | int heads_by_sects, start_sec, end_sec; | |
2139 | ||
2140 | /* assume partition table already zeroed */ | |
2141 | if ((scsi_debug_num_parts < 1) || (sdebug_store_size < 1048576)) | |
2142 | return; | |
2143 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { | |
2144 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; | |
2145 | printk(KERN_WARNING "scsi_debug:build_parts: reducing " | |
2146 | "partitions to %d\n", SDEBUG_MAX_PARTS); | |
2147 | } | |
c65b1445 | 2148 | num_sectors = (int)sdebug_store_sectors; |
1da177e4 LT |
2149 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
2150 | / scsi_debug_num_parts; | |
2151 | heads_by_sects = sdebug_heads * sdebug_sectors_per; | |
2152 | starts[0] = sdebug_sectors_per; | |
2153 | for (k = 1; k < scsi_debug_num_parts; ++k) | |
2154 | starts[k] = ((k * sectors_per_part) / heads_by_sects) | |
2155 | * heads_by_sects; | |
2156 | starts[scsi_debug_num_parts] = num_sectors; | |
2157 | starts[scsi_debug_num_parts + 1] = 0; | |
2158 | ||
2159 | ramp[510] = 0x55; /* magic partition markings */ | |
2160 | ramp[511] = 0xAA; | |
2161 | pp = (struct partition *)(ramp + 0x1be); | |
2162 | for (k = 0; starts[k + 1]; ++k, ++pp) { | |
2163 | start_sec = starts[k]; | |
2164 | end_sec = starts[k + 1] - 1; | |
2165 | pp->boot_ind = 0; | |
2166 | ||
2167 | pp->cyl = start_sec / heads_by_sects; | |
2168 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) | |
2169 | / sdebug_sectors_per; | |
2170 | pp->sector = (start_sec % sdebug_sectors_per) + 1; | |
2171 | ||
2172 | pp->end_cyl = end_sec / heads_by_sects; | |
2173 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) | |
2174 | / sdebug_sectors_per; | |
2175 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; | |
2176 | ||
2177 | pp->start_sect = start_sec; | |
2178 | pp->nr_sects = end_sec - start_sec + 1; | |
2179 | pp->sys_ind = 0x83; /* plain Linux partition */ | |
2180 | } | |
2181 | } | |
2182 | ||
2183 | static int schedule_resp(struct scsi_cmnd * cmnd, | |
2184 | struct sdebug_dev_info * devip, | |
2185 | done_funct_t done, int scsi_result, int delta_jiff) | |
2186 | { | |
2187 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) { | |
2188 | if (scsi_result) { | |
2189 | struct scsi_device * sdp = cmnd->device; | |
2190 | ||
c65b1445 DG |
2191 | printk(KERN_INFO "scsi_debug: <%u %u %u %u> " |
2192 | "non-zero result=0x%x\n", sdp->host->host_no, | |
2193 | sdp->channel, sdp->id, sdp->lun, scsi_result); | |
1da177e4 LT |
2194 | } |
2195 | } | |
2196 | if (cmnd && devip) { | |
2197 | /* simulate autosense by this driver */ | |
2198 | if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff)) | |
2199 | memcpy(cmnd->sense_buffer, devip->sense_buff, | |
2200 | (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ? | |
2201 | SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE); | |
2202 | } | |
2203 | if (delta_jiff <= 0) { | |
2204 | if (cmnd) | |
2205 | cmnd->result = scsi_result; | |
2206 | if (done) | |
2207 | done(cmnd); | |
2208 | return 0; | |
2209 | } else { | |
2210 | unsigned long iflags; | |
2211 | int k; | |
2212 | struct sdebug_queued_cmd * sqcp = NULL; | |
2213 | ||
2214 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2215 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2216 | sqcp = &queued_arr[k]; | |
2217 | if (! sqcp->in_use) | |
2218 | break; | |
2219 | } | |
2220 | if (k >= SCSI_DEBUG_CANQUEUE) { | |
2221 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2222 | printk(KERN_WARNING "scsi_debug: can_queue exceeded\n"); | |
2223 | return 1; /* report busy to mid level */ | |
2224 | } | |
2225 | sqcp->in_use = 1; | |
2226 | sqcp->a_cmnd = cmnd; | |
2227 | sqcp->scsi_result = scsi_result; | |
2228 | sqcp->done_funct = done; | |
2229 | sqcp->cmnd_timer.function = timer_intr_handler; | |
2230 | sqcp->cmnd_timer.data = k; | |
2231 | sqcp->cmnd_timer.expires = jiffies + delta_jiff; | |
2232 | add_timer(&sqcp->cmnd_timer); | |
2233 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2234 | if (cmnd) | |
2235 | cmnd->result = 0; | |
2236 | return 0; | |
2237 | } | |
2238 | } | |
2239 | ||
23183910 DG |
2240 | /* Note: The following macros create attribute files in the |
2241 | /sys/module/scsi_debug/parameters directory. Unfortunately this | |
2242 | driver is unaware of a change and cannot trigger auxiliary actions | |
2243 | as it can when the corresponding attribute in the | |
2244 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. | |
2245 | */ | |
c65b1445 DG |
2246 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
2247 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); | |
2248 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); | |
2249 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); | |
2250 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); | |
23183910 | 2251 | module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); |
c65b1445 DG |
2252 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
2253 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); | |
2254 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); | |
2255 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); | |
2256 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); | |
2257 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); | |
2258 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); | |
2259 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); | |
23183910 DG |
2260 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, |
2261 | S_IRUGO | S_IWUSR); | |
1da177e4 LT |
2262 | |
2263 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); | |
2264 | MODULE_DESCRIPTION("SCSI debug adapter driver"); | |
2265 | MODULE_LICENSE("GPL"); | |
2266 | MODULE_VERSION(SCSI_DEBUG_VERSION); | |
2267 | ||
2268 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); | |
2269 | MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); | |
c65b1445 DG |
2270 | MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); |
2271 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); | |
1da177e4 | 2272 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=100)"); |
23183910 | 2273 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
c65b1445 DG |
2274 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
2275 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); | |
1da177e4 | 2276 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
c65b1445 DG |
2277 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
2278 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_error, 4->... (def=0)"); | |
1da177e4 LT |
2279 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
2280 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])"); | |
c65b1445 | 2281 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); |
23183910 | 2282 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
1da177e4 LT |
2283 | |
2284 | ||
2285 | static char sdebug_info[256]; | |
2286 | ||
2287 | static const char * scsi_debug_info(struct Scsi_Host * shp) | |
2288 | { | |
2289 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " | |
2290 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, | |
2291 | scsi_debug_version_date, scsi_debug_dev_size_mb, | |
2292 | scsi_debug_opts); | |
2293 | return sdebug_info; | |
2294 | } | |
2295 | ||
2296 | /* scsi_debug_proc_info | |
2297 | * Used if the driver currently has no own support for /proc/scsi | |
2298 | */ | |
2299 | static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset, | |
2300 | int length, int inout) | |
2301 | { | |
2302 | int len, pos, begin; | |
2303 | int orig_length; | |
2304 | ||
2305 | orig_length = length; | |
2306 | ||
2307 | if (inout == 1) { | |
2308 | char arr[16]; | |
2309 | int minLen = length > 15 ? 15 : length; | |
2310 | ||
2311 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
2312 | return -EACCES; | |
2313 | memcpy(arr, buffer, minLen); | |
2314 | arr[minLen] = '\0'; | |
2315 | if (1 != sscanf(arr, "%d", &pos)) | |
2316 | return -EINVAL; | |
2317 | scsi_debug_opts = pos; | |
2318 | if (scsi_debug_every_nth != 0) | |
2319 | scsi_debug_cmnd_count = 0; | |
2320 | return length; | |
2321 | } | |
2322 | begin = 0; | |
2323 | pos = len = sprintf(buffer, "scsi_debug adapter driver, version " | |
2324 | "%s [%s]\n" | |
2325 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " | |
2326 | "every_nth=%d(curr:%d)\n" | |
2327 | "delay=%d, max_luns=%d, scsi_level=%d\n" | |
2328 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" | |
2329 | "number of aborts=%d, device_reset=%d, bus_resets=%d, " | |
2330 | "host_resets=%d\n", | |
2331 | SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, | |
2332 | scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, | |
2333 | scsi_debug_cmnd_count, scsi_debug_delay, | |
2334 | scsi_debug_max_luns, scsi_debug_scsi_level, | |
2335 | SECT_SIZE, sdebug_cylinders_per, sdebug_heads, sdebug_sectors_per, | |
2336 | num_aborts, num_dev_resets, num_bus_resets, num_host_resets); | |
2337 | if (pos < offset) { | |
2338 | len = 0; | |
2339 | begin = pos; | |
2340 | } | |
2341 | *start = buffer + (offset - begin); /* Start of wanted data */ | |
2342 | len -= (offset - begin); | |
2343 | if (len > length) | |
2344 | len = length; | |
2345 | return len; | |
2346 | } | |
2347 | ||
2348 | static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf) | |
2349 | { | |
2350 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); | |
2351 | } | |
2352 | ||
2353 | static ssize_t sdebug_delay_store(struct device_driver * ddp, | |
2354 | const char * buf, size_t count) | |
2355 | { | |
2356 | int delay; | |
2357 | char work[20]; | |
2358 | ||
2359 | if (1 == sscanf(buf, "%10s", work)) { | |
2360 | if ((1 == sscanf(work, "%d", &delay)) && (delay >= 0)) { | |
2361 | scsi_debug_delay = delay; | |
2362 | return count; | |
2363 | } | |
2364 | } | |
2365 | return -EINVAL; | |
2366 | } | |
2367 | DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show, | |
2368 | sdebug_delay_store); | |
2369 | ||
2370 | static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf) | |
2371 | { | |
2372 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); | |
2373 | } | |
2374 | ||
2375 | static ssize_t sdebug_opts_store(struct device_driver * ddp, | |
2376 | const char * buf, size_t count) | |
2377 | { | |
2378 | int opts; | |
2379 | char work[20]; | |
2380 | ||
2381 | if (1 == sscanf(buf, "%10s", work)) { | |
2382 | if (0 == strnicmp(work,"0x", 2)) { | |
2383 | if (1 == sscanf(&work[2], "%x", &opts)) | |
2384 | goto opts_done; | |
2385 | } else { | |
2386 | if (1 == sscanf(work, "%d", &opts)) | |
2387 | goto opts_done; | |
2388 | } | |
2389 | } | |
2390 | return -EINVAL; | |
2391 | opts_done: | |
2392 | scsi_debug_opts = opts; | |
2393 | scsi_debug_cmnd_count = 0; | |
2394 | return count; | |
2395 | } | |
2396 | DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show, | |
2397 | sdebug_opts_store); | |
2398 | ||
2399 | static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf) | |
2400 | { | |
2401 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); | |
2402 | } | |
2403 | static ssize_t sdebug_ptype_store(struct device_driver * ddp, | |
2404 | const char * buf, size_t count) | |
2405 | { | |
2406 | int n; | |
2407 | ||
2408 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2409 | scsi_debug_ptype = n; | |
2410 | return count; | |
2411 | } | |
2412 | return -EINVAL; | |
2413 | } | |
2414 | DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store); | |
2415 | ||
2416 | static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf) | |
2417 | { | |
2418 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); | |
2419 | } | |
2420 | static ssize_t sdebug_dsense_store(struct device_driver * ddp, | |
2421 | const char * buf, size_t count) | |
2422 | { | |
2423 | int n; | |
2424 | ||
2425 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2426 | scsi_debug_dsense = n; | |
2427 | return count; | |
2428 | } | |
2429 | return -EINVAL; | |
2430 | } | |
2431 | DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show, | |
2432 | sdebug_dsense_store); | |
2433 | ||
23183910 DG |
2434 | static ssize_t sdebug_fake_rw_show(struct device_driver * ddp, char * buf) |
2435 | { | |
2436 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); | |
2437 | } | |
2438 | static ssize_t sdebug_fake_rw_store(struct device_driver * ddp, | |
2439 | const char * buf, size_t count) | |
2440 | { | |
2441 | int n; | |
2442 | ||
2443 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2444 | scsi_debug_fake_rw = n; | |
2445 | return count; | |
2446 | } | |
2447 | return -EINVAL; | |
2448 | } | |
2449 | DRIVER_ATTR(fake_rw, S_IRUGO | S_IWUSR, sdebug_fake_rw_show, | |
2450 | sdebug_fake_rw_store); | |
2451 | ||
c65b1445 DG |
2452 | static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf) |
2453 | { | |
2454 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); | |
2455 | } | |
2456 | static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp, | |
2457 | const char * buf, size_t count) | |
2458 | { | |
2459 | int n; | |
2460 | ||
2461 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2462 | scsi_debug_no_lun_0 = n; | |
2463 | return count; | |
2464 | } | |
2465 | return -EINVAL; | |
2466 | } | |
2467 | DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show, | |
2468 | sdebug_no_lun_0_store); | |
2469 | ||
1da177e4 LT |
2470 | static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf) |
2471 | { | |
2472 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); | |
2473 | } | |
2474 | static ssize_t sdebug_num_tgts_store(struct device_driver * ddp, | |
2475 | const char * buf, size_t count) | |
2476 | { | |
2477 | int n; | |
2478 | ||
2479 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2480 | scsi_debug_num_tgts = n; | |
2481 | sdebug_max_tgts_luns(); | |
2482 | return count; | |
2483 | } | |
2484 | return -EINVAL; | |
2485 | } | |
2486 | DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show, | |
2487 | sdebug_num_tgts_store); | |
2488 | ||
2489 | static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf) | |
2490 | { | |
2491 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); | |
2492 | } | |
2493 | DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL); | |
2494 | ||
2495 | static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf) | |
2496 | { | |
2497 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); | |
2498 | } | |
2499 | DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL); | |
2500 | ||
2501 | static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf) | |
2502 | { | |
2503 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); | |
2504 | } | |
2505 | static ssize_t sdebug_every_nth_store(struct device_driver * ddp, | |
2506 | const char * buf, size_t count) | |
2507 | { | |
2508 | int nth; | |
2509 | ||
2510 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { | |
2511 | scsi_debug_every_nth = nth; | |
2512 | scsi_debug_cmnd_count = 0; | |
2513 | return count; | |
2514 | } | |
2515 | return -EINVAL; | |
2516 | } | |
2517 | DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show, | |
2518 | sdebug_every_nth_store); | |
2519 | ||
2520 | static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf) | |
2521 | { | |
2522 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); | |
2523 | } | |
2524 | static ssize_t sdebug_max_luns_store(struct device_driver * ddp, | |
2525 | const char * buf, size_t count) | |
2526 | { | |
2527 | int n; | |
2528 | ||
2529 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2530 | scsi_debug_max_luns = n; | |
2531 | sdebug_max_tgts_luns(); | |
2532 | return count; | |
2533 | } | |
2534 | return -EINVAL; | |
2535 | } | |
2536 | DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, | |
2537 | sdebug_max_luns_store); | |
2538 | ||
2539 | static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf) | |
2540 | { | |
2541 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); | |
2542 | } | |
2543 | DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL); | |
2544 | ||
c65b1445 DG |
2545 | static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf) |
2546 | { | |
2547 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); | |
2548 | } | |
2549 | static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp, | |
2550 | const char * buf, size_t count) | |
2551 | { | |
2552 | int n; | |
2553 | ||
2554 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2555 | scsi_debug_virtual_gb = n; | |
2556 | if (scsi_debug_virtual_gb > 0) { | |
2557 | sdebug_capacity = 2048 * 1024; | |
2558 | sdebug_capacity *= scsi_debug_virtual_gb; | |
2559 | } else | |
2560 | sdebug_capacity = sdebug_store_sectors; | |
2561 | return count; | |
2562 | } | |
2563 | return -EINVAL; | |
2564 | } | |
2565 | DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show, | |
2566 | sdebug_virtual_gb_store); | |
2567 | ||
1da177e4 LT |
2568 | static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf) |
2569 | { | |
2570 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); | |
2571 | } | |
2572 | ||
2573 | static ssize_t sdebug_add_host_store(struct device_driver * ddp, | |
2574 | const char * buf, size_t count) | |
2575 | { | |
2576 | int delta_hosts; | |
2577 | char work[20]; | |
2578 | ||
2579 | if (1 != sscanf(buf, "%10s", work)) | |
2580 | return -EINVAL; | |
2581 | { /* temporary hack around sscanf() problem with -ve nums */ | |
2582 | int neg = 0; | |
2583 | ||
2584 | if ('-' == *work) | |
2585 | neg = 1; | |
2586 | if (1 != sscanf(work + neg, "%d", &delta_hosts)) | |
2587 | return -EINVAL; | |
2588 | if (neg) | |
2589 | delta_hosts = -delta_hosts; | |
2590 | } | |
2591 | if (delta_hosts > 0) { | |
2592 | do { | |
2593 | sdebug_add_adapter(); | |
2594 | } while (--delta_hosts); | |
2595 | } else if (delta_hosts < 0) { | |
2596 | do { | |
2597 | sdebug_remove_adapter(); | |
2598 | } while (++delta_hosts); | |
2599 | } | |
2600 | return count; | |
2601 | } | |
2602 | DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show, | |
2603 | sdebug_add_host_store); | |
2604 | ||
23183910 DG |
2605 | static ssize_t sdebug_vpd_use_hostno_show(struct device_driver * ddp, |
2606 | char * buf) | |
2607 | { | |
2608 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); | |
2609 | } | |
2610 | static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp, | |
2611 | const char * buf, size_t count) | |
2612 | { | |
2613 | int n; | |
2614 | ||
2615 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2616 | scsi_debug_vpd_use_hostno = n; | |
2617 | return count; | |
2618 | } | |
2619 | return -EINVAL; | |
2620 | } | |
2621 | DRIVER_ATTR(vpd_use_hostno, S_IRUGO | S_IWUSR, sdebug_vpd_use_hostno_show, | |
2622 | sdebug_vpd_use_hostno_store); | |
2623 | ||
2624 | /* Note: The following function creates attribute files in the | |
2625 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these | |
2626 | files (over those found in the /sys/module/scsi_debug/parameters | |
2627 | directory) is that auxiliary actions can be triggered when an attribute | |
2628 | is changed. For example see: sdebug_add_host_store() above. | |
2629 | */ | |
6ecaff7f | 2630 | static int do_create_driverfs_files(void) |
1da177e4 | 2631 | { |
6ecaff7f RD |
2632 | int ret; |
2633 | ||
2634 | ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host); | |
2635 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay); | |
2636 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); | |
2637 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense); | |
2638 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth); | |
23183910 | 2639 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
6ecaff7f | 2640 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
23183910 | 2641 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); |
6ecaff7f | 2642 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
23183910 | 2643 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
6ecaff7f RD |
2644 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
2645 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts); | |
2646 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); | |
23183910 DG |
2647 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); |
2648 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); | |
6ecaff7f | 2649 | return ret; |
1da177e4 LT |
2650 | } |
2651 | ||
2652 | static void do_remove_driverfs_files(void) | |
2653 | { | |
23183910 DG |
2654 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); |
2655 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); | |
1da177e4 LT |
2656 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
2657 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts); | |
2658 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype); | |
1da177e4 | 2659 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
23183910 DG |
2660 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
2661 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); | |
1da177e4 | 2662 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
23183910 | 2663 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
1da177e4 LT |
2664 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
2665 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense); | |
2666 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); | |
2667 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay); | |
2668 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); | |
2669 | } | |
2670 | ||
2671 | static int __init scsi_debug_init(void) | |
2672 | { | |
c65b1445 | 2673 | unsigned int sz; |
1da177e4 LT |
2674 | int host_to_add; |
2675 | int k; | |
6ecaff7f | 2676 | int ret; |
1da177e4 LT |
2677 | |
2678 | if (scsi_debug_dev_size_mb < 1) | |
2679 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ | |
c65b1445 DG |
2680 | sdebug_store_size = (unsigned int)scsi_debug_dev_size_mb * 1048576; |
2681 | sdebug_store_sectors = sdebug_store_size / SECT_SIZE; | |
2682 | if (scsi_debug_virtual_gb > 0) { | |
2683 | sdebug_capacity = 2048 * 1024; | |
2684 | sdebug_capacity *= scsi_debug_virtual_gb; | |
2685 | } else | |
2686 | sdebug_capacity = sdebug_store_sectors; | |
1da177e4 LT |
2687 | |
2688 | /* play around with geometry, don't waste too much on track 0 */ | |
2689 | sdebug_heads = 8; | |
2690 | sdebug_sectors_per = 32; | |
2691 | if (scsi_debug_dev_size_mb >= 16) | |
2692 | sdebug_heads = 32; | |
2693 | else if (scsi_debug_dev_size_mb >= 256) | |
2694 | sdebug_heads = 64; | |
2695 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
2696 | (sdebug_sectors_per * sdebug_heads); | |
2697 | if (sdebug_cylinders_per >= 1024) { | |
2698 | /* other LLDs do this; implies >= 1GB ram disk ... */ | |
2699 | sdebug_heads = 255; | |
2700 | sdebug_sectors_per = 63; | |
2701 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
2702 | (sdebug_sectors_per * sdebug_heads); | |
2703 | } | |
2704 | ||
2705 | sz = sdebug_store_size; | |
2706 | fake_storep = vmalloc(sz); | |
2707 | if (NULL == fake_storep) { | |
2708 | printk(KERN_ERR "scsi_debug_init: out of memory, 1\n"); | |
2709 | return -ENOMEM; | |
2710 | } | |
2711 | memset(fake_storep, 0, sz); | |
2712 | if (scsi_debug_num_parts > 0) | |
2713 | sdebug_build_parts(fake_storep); | |
2714 | ||
6ecaff7f RD |
2715 | ret = device_register(&pseudo_primary); |
2716 | if (ret < 0) { | |
2717 | printk(KERN_WARNING "scsi_debug: device_register error: %d\n", | |
2718 | ret); | |
2719 | goto free_vm; | |
2720 | } | |
2721 | ret = bus_register(&pseudo_lld_bus); | |
2722 | if (ret < 0) { | |
2723 | printk(KERN_WARNING "scsi_debug: bus_register error: %d\n", | |
2724 | ret); | |
2725 | goto dev_unreg; | |
2726 | } | |
2727 | ret = driver_register(&sdebug_driverfs_driver); | |
2728 | if (ret < 0) { | |
2729 | printk(KERN_WARNING "scsi_debug: driver_register error: %d\n", | |
2730 | ret); | |
2731 | goto bus_unreg; | |
2732 | } | |
2733 | ret = do_create_driverfs_files(); | |
2734 | if (ret < 0) { | |
2735 | printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n", | |
2736 | ret); | |
2737 | goto del_files; | |
2738 | } | |
1da177e4 | 2739 | |
6ecaff7f | 2740 | init_all_queued(); |
1da177e4 LT |
2741 | |
2742 | sdebug_driver_template.proc_name = (char *)sdebug_proc_name; | |
2743 | ||
2744 | host_to_add = scsi_debug_add_host; | |
2745 | scsi_debug_add_host = 0; | |
2746 | ||
2747 | for (k = 0; k < host_to_add; k++) { | |
2748 | if (sdebug_add_adapter()) { | |
2749 | printk(KERN_ERR "scsi_debug_init: " | |
2750 | "sdebug_add_adapter failed k=%d\n", k); | |
2751 | break; | |
2752 | } | |
2753 | } | |
2754 | ||
2755 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
2756 | printk(KERN_INFO "scsi_debug_init: built %d host(s)\n", | |
2757 | scsi_debug_add_host); | |
2758 | } | |
2759 | return 0; | |
6ecaff7f RD |
2760 | |
2761 | del_files: | |
2762 | do_remove_driverfs_files(); | |
2763 | driver_unregister(&sdebug_driverfs_driver); | |
2764 | bus_unreg: | |
2765 | bus_unregister(&pseudo_lld_bus); | |
2766 | dev_unreg: | |
2767 | device_unregister(&pseudo_primary); | |
2768 | free_vm: | |
2769 | vfree(fake_storep); | |
2770 | ||
2771 | return ret; | |
1da177e4 LT |
2772 | } |
2773 | ||
2774 | static void __exit scsi_debug_exit(void) | |
2775 | { | |
2776 | int k = scsi_debug_add_host; | |
2777 | ||
2778 | stop_all_queued(); | |
2779 | for (; k; k--) | |
2780 | sdebug_remove_adapter(); | |
2781 | do_remove_driverfs_files(); | |
2782 | driver_unregister(&sdebug_driverfs_driver); | |
2783 | bus_unregister(&pseudo_lld_bus); | |
2784 | device_unregister(&pseudo_primary); | |
2785 | ||
2786 | vfree(fake_storep); | |
2787 | } | |
2788 | ||
2789 | device_initcall(scsi_debug_init); | |
2790 | module_exit(scsi_debug_exit); | |
2791 | ||
52c1da39 | 2792 | static void pseudo_0_release(struct device * dev) |
1da177e4 LT |
2793 | { |
2794 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2795 | printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n"); | |
2796 | } | |
2797 | ||
2798 | static struct device pseudo_primary = { | |
2799 | .bus_id = "pseudo_0", | |
2800 | .release = pseudo_0_release, | |
2801 | }; | |
2802 | ||
2803 | static int pseudo_lld_bus_match(struct device *dev, | |
2804 | struct device_driver *dev_driver) | |
2805 | { | |
2806 | return 1; | |
2807 | } | |
2808 | ||
2809 | static struct bus_type pseudo_lld_bus = { | |
2810 | .name = "pseudo", | |
2811 | .match = pseudo_lld_bus_match, | |
bbbe3a41 RK |
2812 | .probe = sdebug_driver_probe, |
2813 | .remove = sdebug_driver_remove, | |
1da177e4 LT |
2814 | }; |
2815 | ||
2816 | static void sdebug_release_adapter(struct device * dev) | |
2817 | { | |
2818 | struct sdebug_host_info *sdbg_host; | |
2819 | ||
2820 | sdbg_host = to_sdebug_host(dev); | |
2821 | kfree(sdbg_host); | |
2822 | } | |
2823 | ||
2824 | static int sdebug_add_adapter(void) | |
2825 | { | |
2826 | int k, devs_per_host; | |
2827 | int error = 0; | |
2828 | struct sdebug_host_info *sdbg_host; | |
2829 | struct sdebug_dev_info *sdbg_devinfo; | |
2830 | struct list_head *lh, *lh_sf; | |
2831 | ||
c65b1445 | 2832 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
1da177e4 LT |
2833 | |
2834 | if (NULL == sdbg_host) { | |
2835 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
2836 | __FUNCTION__, __LINE__); | |
2837 | return -ENOMEM; | |
2838 | } | |
2839 | ||
1da177e4 LT |
2840 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
2841 | ||
2842 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; | |
2843 | for (k = 0; k < devs_per_host; k++) { | |
c65b1445 | 2844 | sdbg_devinfo = kzalloc(sizeof(*sdbg_devinfo),GFP_KERNEL); |
1da177e4 LT |
2845 | if (NULL == sdbg_devinfo) { |
2846 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
2847 | __FUNCTION__, __LINE__); | |
2848 | error = -ENOMEM; | |
2849 | goto clean; | |
2850 | } | |
1da177e4 LT |
2851 | sdbg_devinfo->sdbg_host = sdbg_host; |
2852 | list_add_tail(&sdbg_devinfo->dev_list, | |
2853 | &sdbg_host->dev_info_list); | |
2854 | } | |
2855 | ||
2856 | spin_lock(&sdebug_host_list_lock); | |
2857 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); | |
2858 | spin_unlock(&sdebug_host_list_lock); | |
2859 | ||
2860 | sdbg_host->dev.bus = &pseudo_lld_bus; | |
2861 | sdbg_host->dev.parent = &pseudo_primary; | |
2862 | sdbg_host->dev.release = &sdebug_release_adapter; | |
2863 | sprintf(sdbg_host->dev.bus_id, "adapter%d", scsi_debug_add_host); | |
2864 | ||
2865 | error = device_register(&sdbg_host->dev); | |
2866 | ||
2867 | if (error) | |
2868 | goto clean; | |
2869 | ||
2870 | ++scsi_debug_add_host; | |
2871 | return error; | |
2872 | ||
2873 | clean: | |
2874 | list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { | |
2875 | sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, | |
2876 | dev_list); | |
2877 | list_del(&sdbg_devinfo->dev_list); | |
2878 | kfree(sdbg_devinfo); | |
2879 | } | |
2880 | ||
2881 | kfree(sdbg_host); | |
2882 | return error; | |
2883 | } | |
2884 | ||
2885 | static void sdebug_remove_adapter(void) | |
2886 | { | |
2887 | struct sdebug_host_info * sdbg_host = NULL; | |
2888 | ||
2889 | spin_lock(&sdebug_host_list_lock); | |
2890 | if (!list_empty(&sdebug_host_list)) { | |
2891 | sdbg_host = list_entry(sdebug_host_list.prev, | |
2892 | struct sdebug_host_info, host_list); | |
2893 | list_del(&sdbg_host->host_list); | |
2894 | } | |
2895 | spin_unlock(&sdebug_host_list_lock); | |
2896 | ||
2897 | if (!sdbg_host) | |
2898 | return; | |
2899 | ||
2900 | device_unregister(&sdbg_host->dev); | |
2901 | --scsi_debug_add_host; | |
2902 | } | |
2903 | ||
2904 | static int sdebug_driver_probe(struct device * dev) | |
2905 | { | |
2906 | int error = 0; | |
2907 | struct sdebug_host_info *sdbg_host; | |
2908 | struct Scsi_Host *hpnt; | |
2909 | ||
2910 | sdbg_host = to_sdebug_host(dev); | |
2911 | ||
2912 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); | |
2913 | if (NULL == hpnt) { | |
2914 | printk(KERN_ERR "%s: scsi_register failed\n", __FUNCTION__); | |
2915 | error = -ENODEV; | |
2916 | return error; | |
2917 | } | |
2918 | ||
2919 | sdbg_host->shost = hpnt; | |
2920 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; | |
2921 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) | |
2922 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
2923 | else | |
2924 | hpnt->max_id = scsi_debug_num_tgts; | |
c65b1445 | 2925 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
1da177e4 LT |
2926 | |
2927 | error = scsi_add_host(hpnt, &sdbg_host->dev); | |
2928 | if (error) { | |
2929 | printk(KERN_ERR "%s: scsi_add_host failed\n", __FUNCTION__); | |
2930 | error = -ENODEV; | |
2931 | scsi_host_put(hpnt); | |
2932 | } else | |
2933 | scsi_scan_host(hpnt); | |
2934 | ||
2935 | ||
2936 | return error; | |
2937 | } | |
2938 | ||
2939 | static int sdebug_driver_remove(struct device * dev) | |
2940 | { | |
2941 | struct list_head *lh, *lh_sf; | |
2942 | struct sdebug_host_info *sdbg_host; | |
2943 | struct sdebug_dev_info *sdbg_devinfo; | |
2944 | ||
2945 | sdbg_host = to_sdebug_host(dev); | |
2946 | ||
2947 | if (!sdbg_host) { | |
2948 | printk(KERN_ERR "%s: Unable to locate host info\n", | |
2949 | __FUNCTION__); | |
2950 | return -ENODEV; | |
2951 | } | |
2952 | ||
2953 | scsi_remove_host(sdbg_host->shost); | |
2954 | ||
2955 | list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { | |
2956 | sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, | |
2957 | dev_list); | |
2958 | list_del(&sdbg_devinfo->dev_list); | |
2959 | kfree(sdbg_devinfo); | |
2960 | } | |
2961 | ||
2962 | scsi_host_put(sdbg_host->shost); | |
2963 | return 0; | |
2964 | } | |
2965 | ||
2966 | static void sdebug_max_tgts_luns(void) | |
2967 | { | |
2968 | struct sdebug_host_info * sdbg_host; | |
2969 | struct Scsi_Host *hpnt; | |
2970 | ||
2971 | spin_lock(&sdebug_host_list_lock); | |
2972 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
2973 | hpnt = sdbg_host->shost; | |
2974 | if ((hpnt->this_id >= 0) && | |
2975 | (scsi_debug_num_tgts > hpnt->this_id)) | |
2976 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
2977 | else | |
2978 | hpnt->max_id = scsi_debug_num_tgts; | |
c65b1445 | 2979 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* scsi_debug_max_luns; */ |
1da177e4 LT |
2980 | } |
2981 | spin_unlock(&sdebug_host_list_lock); | |
2982 | } |