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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv |
3 | * Copyright (C) 1992 Eric Youngdale | |
4 | * Simulate a host adapter with 2 disks attached. Do a lot of checking | |
5 | * to make sure that we are not getting blocks mixed up, and PANIC if | |
6 | * anything out of the ordinary is seen. | |
7 | * ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
8 | * | |
9 | * This version is more generic, simulating a variable number of disk | |
23183910 DG |
10 | * (or disk like devices) sharing a common amount of RAM. To be more |
11 | * realistic, the simulated devices have the transport attributes of | |
12 | * SAS disks. | |
1da177e4 LT |
13 | * |
14 | * | |
15 | * For documentation see http://www.torque.net/sg/sdebug26.html | |
16 | * | |
17 | * D. Gilbert (dpg) work for Magneto-Optical device test [20010421] | |
18 | * dpg: work for devfs large number of disks [20010809] | |
19 | * forked for lk 2.5 series [20011216, 20020101] | |
20 | * use vmalloc() more inquiry+mode_sense [20020302] | |
21 | * add timers for delayed responses [20020721] | |
22 | * Patrick Mansfield <patmans@us.ibm.com> max_luns+scsi_level [20021031] | |
23 | * Mike Anderson <andmike@us.ibm.com> sysfs work [20021118] | |
24 | * dpg: change style of boot options to "scsi_debug.num_tgts=2" and | |
25 | * module options to "modprobe scsi_debug num_tgts=2" [20021221] | |
26 | */ | |
27 | ||
1da177e4 LT |
28 | #include <linux/module.h> |
29 | ||
30 | #include <linux/kernel.h> | |
1da177e4 LT |
31 | #include <linux/errno.h> |
32 | #include <linux/timer.h> | |
33 | #include <linux/types.h> | |
34 | #include <linux/string.h> | |
35 | #include <linux/genhd.h> | |
36 | #include <linux/fs.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/proc_fs.h> | |
1da177e4 LT |
39 | #include <linux/vmalloc.h> |
40 | #include <linux/moduleparam.h> | |
852e034d | 41 | #include <linux/scatterlist.h> |
1da177e4 LT |
42 | |
43 | #include <linux/blkdev.h> | |
44 | #include "scsi.h" | |
45 | #include <scsi/scsi_host.h> | |
46 | #include <scsi/scsicam.h> | |
47 | ||
48 | #include <linux/stat.h> | |
49 | ||
1da177e4 LT |
50 | #include "scsi_logging.h" |
51 | #include "scsi_debug.h" | |
52 | ||
6f3cbf55 DG |
53 | #define SCSI_DEBUG_VERSION "1.81" |
54 | static const char * scsi_debug_version_date = "20070104"; | |
1da177e4 | 55 | |
6f3cbf55 | 56 | /* Additional Sense Code (ASC) */ |
c65b1445 DG |
57 | #define NO_ADDITIONAL_SENSE 0x0 |
58 | #define LOGICAL_UNIT_NOT_READY 0x4 | |
1da177e4 | 59 | #define UNRECOVERED_READ_ERR 0x11 |
c65b1445 | 60 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
1da177e4 LT |
61 | #define INVALID_OPCODE 0x20 |
62 | #define ADDR_OUT_OF_RANGE 0x21 | |
63 | #define INVALID_FIELD_IN_CDB 0x24 | |
c65b1445 | 64 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
1da177e4 LT |
65 | #define POWERON_RESET 0x29 |
66 | #define SAVING_PARAMS_UNSUP 0x39 | |
6f3cbf55 | 67 | #define TRANSPORT_PROBLEM 0x4b |
c65b1445 DG |
68 | #define THRESHOLD_EXCEEDED 0x5d |
69 | #define LOW_POWER_COND_ON 0x5e | |
1da177e4 | 70 | |
6f3cbf55 DG |
71 | /* Additional Sense Code Qualifier (ASCQ) */ |
72 | #define ACK_NAK_TO 0x3 | |
73 | ||
1da177e4 LT |
74 | #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ |
75 | ||
76 | /* Default values for driver parameters */ | |
77 | #define DEF_NUM_HOST 1 | |
78 | #define DEF_NUM_TGTS 1 | |
79 | #define DEF_MAX_LUNS 1 | |
80 | /* With these defaults, this driver will make 1 host with 1 target | |
81 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. | |
82 | */ | |
83 | #define DEF_DELAY 1 | |
84 | #define DEF_DEV_SIZE_MB 8 | |
85 | #define DEF_EVERY_NTH 0 | |
86 | #define DEF_NUM_PARTS 0 | |
87 | #define DEF_OPTS 0 | |
88 | #define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ | |
89 | #define DEF_PTYPE 0 | |
90 | #define DEF_D_SENSE 0 | |
c65b1445 DG |
91 | #define DEF_NO_LUN_0 0 |
92 | #define DEF_VIRTUAL_GB 0 | |
23183910 DG |
93 | #define DEF_FAKE_RW 0 |
94 | #define DEF_VPD_USE_HOSTNO 1 | |
1da177e4 LT |
95 | |
96 | /* bit mask values for scsi_debug_opts */ | |
97 | #define SCSI_DEBUG_OPT_NOISE 1 | |
98 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 | |
99 | #define SCSI_DEBUG_OPT_TIMEOUT 4 | |
100 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 | |
6f3cbf55 | 101 | #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
1da177e4 LT |
102 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
103 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
104 | * - a RECOVERED_ERROR is simulated on successful read and write | |
105 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
106 | * - a TRANSPORT_ERROR is simulated on successful read and write |
107 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
108 | * |
109 | * When "every_nth" < 0 then after "- every_nth" commands: | |
110 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set | |
111 | * - a RECOVERED_ERROR is simulated on successful read and write | |
112 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. | |
6f3cbf55 DG |
113 | * - a TRANSPORT_ERROR is simulated on successful read and write |
114 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. | |
1da177e4 LT |
115 | * This will continue until some other action occurs (e.g. the user |
116 | * writing a new value (other than -1 or 1) to every_nth via sysfs). | |
117 | */ | |
118 | ||
119 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this | |
120 | * sector on read commands: */ | |
121 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ | |
122 | ||
123 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) | |
124 | * or "peripheral device" addressing (value 0) */ | |
125 | #define SAM2_LUN_ADDRESS_METHOD 0 | |
c65b1445 | 126 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
1da177e4 LT |
127 | |
128 | static int scsi_debug_add_host = DEF_NUM_HOST; | |
129 | static int scsi_debug_delay = DEF_DELAY; | |
130 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; | |
131 | static int scsi_debug_every_nth = DEF_EVERY_NTH; | |
132 | static int scsi_debug_max_luns = DEF_MAX_LUNS; | |
133 | static int scsi_debug_num_parts = DEF_NUM_PARTS; | |
134 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ | |
135 | static int scsi_debug_opts = DEF_OPTS; | |
136 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; | |
137 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ | |
138 | static int scsi_debug_dsense = DEF_D_SENSE; | |
c65b1445 DG |
139 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
140 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; | |
23183910 DG |
141 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
142 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; | |
1da177e4 LT |
143 | |
144 | static int scsi_debug_cmnd_count = 0; | |
145 | ||
146 | #define DEV_READONLY(TGT) (0) | |
147 | #define DEV_REMOVEABLE(TGT) (0) | |
148 | ||
c65b1445 DG |
149 | static unsigned int sdebug_store_size; /* in bytes */ |
150 | static unsigned int sdebug_store_sectors; | |
1da177e4 LT |
151 | static sector_t sdebug_capacity; /* in sectors */ |
152 | ||
153 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages | |
154 | may still need them */ | |
155 | static int sdebug_heads; /* heads per disk */ | |
156 | static int sdebug_cylinders_per; /* cylinders per surface */ | |
157 | static int sdebug_sectors_per; /* sectors per cylinder */ | |
158 | ||
159 | /* default sector size is 512 bytes, 2**9 bytes */ | |
160 | #define POW2_SECT_SIZE 9 | |
161 | #define SECT_SIZE (1 << POW2_SECT_SIZE) | |
162 | #define SECT_SIZE_PER(TGT) SECT_SIZE | |
163 | ||
164 | #define SDEBUG_MAX_PARTS 4 | |
165 | ||
166 | #define SDEBUG_SENSE_LEN 32 | |
167 | ||
168 | struct sdebug_dev_info { | |
169 | struct list_head dev_list; | |
170 | unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ | |
171 | unsigned int channel; | |
172 | unsigned int target; | |
173 | unsigned int lun; | |
174 | struct sdebug_host_info *sdbg_host; | |
c65b1445 | 175 | unsigned int wlun; |
1da177e4 | 176 | char reset; |
c65b1445 | 177 | char stopped; |
1da177e4 LT |
178 | char used; |
179 | }; | |
180 | ||
181 | struct sdebug_host_info { | |
182 | struct list_head host_list; | |
183 | struct Scsi_Host *shost; | |
184 | struct device dev; | |
185 | struct list_head dev_info_list; | |
186 | }; | |
187 | ||
188 | #define to_sdebug_host(d) \ | |
189 | container_of(d, struct sdebug_host_info, dev) | |
190 | ||
191 | static LIST_HEAD(sdebug_host_list); | |
192 | static DEFINE_SPINLOCK(sdebug_host_list_lock); | |
193 | ||
194 | typedef void (* done_funct_t) (struct scsi_cmnd *); | |
195 | ||
196 | struct sdebug_queued_cmd { | |
197 | int in_use; | |
198 | struct timer_list cmnd_timer; | |
199 | done_funct_t done_funct; | |
200 | struct scsi_cmnd * a_cmnd; | |
201 | int scsi_result; | |
202 | }; | |
203 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; | |
204 | ||
d0be4a7d | 205 | static struct scsi_host_template sdebug_driver_template = { |
1da177e4 LT |
206 | .proc_info = scsi_debug_proc_info, |
207 | .name = "SCSI DEBUG", | |
208 | .info = scsi_debug_info, | |
209 | .slave_alloc = scsi_debug_slave_alloc, | |
210 | .slave_configure = scsi_debug_slave_configure, | |
211 | .slave_destroy = scsi_debug_slave_destroy, | |
212 | .ioctl = scsi_debug_ioctl, | |
213 | .queuecommand = scsi_debug_queuecommand, | |
214 | .eh_abort_handler = scsi_debug_abort, | |
215 | .eh_bus_reset_handler = scsi_debug_bus_reset, | |
216 | .eh_device_reset_handler = scsi_debug_device_reset, | |
217 | .eh_host_reset_handler = scsi_debug_host_reset, | |
218 | .bios_param = scsi_debug_biosparam, | |
219 | .can_queue = SCSI_DEBUG_CANQUEUE, | |
220 | .this_id = 7, | |
c65b1445 DG |
221 | .sg_tablesize = 256, |
222 | .cmd_per_lun = 16, | |
223 | .max_sectors = 0xffff, | |
1da177e4 | 224 | .unchecked_isa_dma = 0, |
c65b1445 | 225 | .use_clustering = ENABLE_CLUSTERING, |
1da177e4 LT |
226 | .module = THIS_MODULE, |
227 | }; | |
228 | ||
229 | static unsigned char * fake_storep; /* ramdisk storage */ | |
230 | ||
231 | static int num_aborts = 0; | |
232 | static int num_dev_resets = 0; | |
233 | static int num_bus_resets = 0; | |
234 | static int num_host_resets = 0; | |
235 | ||
236 | static DEFINE_SPINLOCK(queued_arr_lock); | |
237 | static DEFINE_RWLOCK(atomic_rw); | |
238 | ||
239 | static char sdebug_proc_name[] = "scsi_debug"; | |
240 | ||
241 | static int sdebug_driver_probe(struct device *); | |
242 | static int sdebug_driver_remove(struct device *); | |
243 | static struct bus_type pseudo_lld_bus; | |
244 | ||
245 | static struct device_driver sdebug_driverfs_driver = { | |
246 | .name = sdebug_proc_name, | |
247 | .bus = &pseudo_lld_bus, | |
1da177e4 LT |
248 | }; |
249 | ||
250 | static const int check_condition_result = | |
251 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; | |
252 | ||
c65b1445 DG |
253 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
254 | 0, 0, 0x2, 0x4b}; | |
255 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
256 | 0, 0, 0x0, 0x0}; | |
257 | ||
1da177e4 LT |
258 | /* function declarations */ |
259 | static int resp_inquiry(struct scsi_cmnd * SCpnt, int target, | |
260 | struct sdebug_dev_info * devip); | |
261 | static int resp_requests(struct scsi_cmnd * SCpnt, | |
262 | struct sdebug_dev_info * devip); | |
c65b1445 DG |
263 | static int resp_start_stop(struct scsi_cmnd * scp, |
264 | struct sdebug_dev_info * devip); | |
5a09e398 HR |
265 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, |
266 | struct sdebug_dev_info * devip); | |
1da177e4 LT |
267 | static int resp_readcap(struct scsi_cmnd * SCpnt, |
268 | struct sdebug_dev_info * devip); | |
c65b1445 DG |
269 | static int resp_readcap16(struct scsi_cmnd * SCpnt, |
270 | struct sdebug_dev_info * devip); | |
271 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, | |
1da177e4 | 272 | struct sdebug_dev_info * devip); |
c65b1445 DG |
273 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, |
274 | struct sdebug_dev_info * devip); | |
275 | static int resp_log_sense(struct scsi_cmnd * scp, | |
276 | struct sdebug_dev_info * devip); | |
277 | static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, | |
278 | unsigned int num, struct sdebug_dev_info * devip); | |
279 | static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, | |
280 | unsigned int num, struct sdebug_dev_info * devip); | |
1da177e4 LT |
281 | static int resp_report_luns(struct scsi_cmnd * SCpnt, |
282 | struct sdebug_dev_info * devip); | |
c639d14e FT |
283 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
284 | unsigned int num, struct sdebug_dev_info *devip); | |
1da177e4 LT |
285 | static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, |
286 | int arr_len); | |
287 | static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, | |
288 | int max_arr_len); | |
289 | static void timer_intr_handler(unsigned long); | |
290 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev); | |
291 | static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, | |
292 | int asc, int asq); | |
c65b1445 DG |
293 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
294 | struct sdebug_dev_info * devip); | |
1da177e4 LT |
295 | static int schedule_resp(struct scsi_cmnd * cmnd, |
296 | struct sdebug_dev_info * devip, | |
297 | done_funct_t done, int scsi_result, int delta_jiff); | |
298 | static void __init sdebug_build_parts(unsigned char * ramp); | |
299 | static void __init init_all_queued(void); | |
300 | static void stop_all_queued(void); | |
301 | static int stop_queued_cmnd(struct scsi_cmnd * cmnd); | |
5a09e398 HR |
302 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
303 | int target_dev_id, int dev_id_num, | |
304 | const char * dev_id_str, int dev_id_str_len); | |
c65b1445 | 305 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id); |
6ecaff7f | 306 | static int do_create_driverfs_files(void); |
1da177e4 LT |
307 | static void do_remove_driverfs_files(void); |
308 | ||
309 | static int sdebug_add_adapter(void); | |
310 | static void sdebug_remove_adapter(void); | |
311 | static void sdebug_max_tgts_luns(void); | |
312 | ||
313 | static struct device pseudo_primary; | |
314 | static struct bus_type pseudo_lld_bus; | |
315 | ||
3de9f944 FT |
316 | static void get_data_transfer_info(unsigned char *cmd, |
317 | unsigned long long *lba, unsigned int *num) | |
318 | { | |
319 | int i; | |
320 | ||
321 | switch (*cmd) { | |
322 | case WRITE_16: | |
323 | case READ_16: | |
324 | for (*lba = 0, i = 0; i < 8; ++i) { | |
325 | if (i > 0) | |
326 | *lba <<= 8; | |
327 | *lba += cmd[2 + i]; | |
328 | } | |
329 | *num = cmd[13] + (cmd[12] << 8) + | |
330 | (cmd[11] << 16) + (cmd[10] << 24); | |
331 | break; | |
332 | case WRITE_12: | |
333 | case READ_12: | |
334 | *lba = cmd[5] + (cmd[4] << 8) + (cmd[3] << 16) + (cmd[2] << 24); | |
335 | *num = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); | |
336 | break; | |
337 | case WRITE_10: | |
338 | case READ_10: | |
c639d14e | 339 | case XDWRITEREAD_10: |
3de9f944 FT |
340 | *lba = cmd[5] + (cmd[4] << 8) + (cmd[3] << 16) + (cmd[2] << 24); |
341 | *num = cmd[8] + (cmd[7] << 8); | |
342 | break; | |
343 | case WRITE_6: | |
344 | case READ_6: | |
345 | *lba = cmd[3] + (cmd[2] << 8) + ((cmd[1] & 0x1f) << 16); | |
346 | *num = (0 == cmd[4]) ? 256 : cmd[4]; | |
347 | break; | |
348 | default: | |
349 | break; | |
350 | } | |
351 | } | |
1da177e4 LT |
352 | |
353 | static | |
354 | int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done) | |
355 | { | |
356 | unsigned char *cmd = (unsigned char *) SCpnt->cmnd; | |
3de9f944 | 357 | int len, k; |
c65b1445 DG |
358 | unsigned int num; |
359 | unsigned long long lba; | |
1da177e4 | 360 | int errsts = 0; |
c65b1445 | 361 | int target = SCpnt->device->id; |
1da177e4 LT |
362 | struct sdebug_dev_info * devip = NULL; |
363 | int inj_recovered = 0; | |
6f3cbf55 | 364 | int inj_transport = 0; |
c65b1445 | 365 | int delay_override = 0; |
1da177e4 LT |
366 | |
367 | if (done == NULL) | |
368 | return 0; /* assume mid level reprocessing command */ | |
369 | ||
c73961e5 | 370 | scsi_set_resid(SCpnt, 0); |
1da177e4 LT |
371 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { |
372 | printk(KERN_INFO "scsi_debug: cmd "); | |
c65b1445 | 373 | for (k = 0, len = SCpnt->cmd_len; k < len; ++k) |
1da177e4 LT |
374 | printk("%02x ", (int)cmd[k]); |
375 | printk("\n"); | |
376 | } | |
377 | if(target == sdebug_driver_template.this_id) { | |
378 | printk(KERN_INFO "scsi_debug: initiator's id used as " | |
379 | "target!\n"); | |
380 | return schedule_resp(SCpnt, NULL, done, | |
381 | DID_NO_CONNECT << 16, 0); | |
382 | } | |
383 | ||
c65b1445 DG |
384 | if ((SCpnt->device->lun >= scsi_debug_max_luns) && |
385 | (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) | |
1da177e4 LT |
386 | return schedule_resp(SCpnt, NULL, done, |
387 | DID_NO_CONNECT << 16, 0); | |
388 | devip = devInfoReg(SCpnt->device); | |
389 | if (NULL == devip) | |
390 | return schedule_resp(SCpnt, NULL, done, | |
391 | DID_NO_CONNECT << 16, 0); | |
392 | ||
393 | if ((scsi_debug_every_nth != 0) && | |
394 | (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { | |
395 | scsi_debug_cmnd_count = 0; | |
396 | if (scsi_debug_every_nth < -1) | |
397 | scsi_debug_every_nth = -1; | |
398 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) | |
399 | return 0; /* ignore command causing timeout */ | |
400 | else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) | |
401 | inj_recovered = 1; /* to reads and writes below */ | |
6f3cbf55 DG |
402 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts) |
403 | inj_transport = 1; /* to reads and writes below */ | |
1da177e4 LT |
404 | } |
405 | ||
c65b1445 DG |
406 | if (devip->wlun) { |
407 | switch (*cmd) { | |
408 | case INQUIRY: | |
409 | case REQUEST_SENSE: | |
410 | case TEST_UNIT_READY: | |
411 | case REPORT_LUNS: | |
412 | break; /* only allowable wlun commands */ | |
413 | default: | |
414 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
415 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x " | |
416 | "not supported for wlun\n", *cmd); | |
417 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
418 | INVALID_OPCODE, 0); | |
419 | errsts = check_condition_result; | |
420 | return schedule_resp(SCpnt, devip, done, errsts, | |
421 | 0); | |
422 | } | |
423 | } | |
424 | ||
1da177e4 LT |
425 | switch (*cmd) { |
426 | case INQUIRY: /* mandatory, ignore unit attention */ | |
c65b1445 | 427 | delay_override = 1; |
1da177e4 LT |
428 | errsts = resp_inquiry(SCpnt, target, devip); |
429 | break; | |
430 | case REQUEST_SENSE: /* mandatory, ignore unit attention */ | |
c65b1445 | 431 | delay_override = 1; |
1da177e4 LT |
432 | errsts = resp_requests(SCpnt, devip); |
433 | break; | |
434 | case REZERO_UNIT: /* actually this is REWIND for SSC */ | |
435 | case START_STOP: | |
c65b1445 | 436 | errsts = resp_start_stop(SCpnt, devip); |
1da177e4 LT |
437 | break; |
438 | case ALLOW_MEDIUM_REMOVAL: | |
c65b1445 | 439 | if ((errsts = check_readiness(SCpnt, 1, devip))) |
1da177e4 LT |
440 | break; |
441 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
442 | printk(KERN_INFO "scsi_debug: Medium removal %s\n", | |
443 | cmd[4] ? "inhibited" : "enabled"); | |
444 | break; | |
445 | case SEND_DIAGNOSTIC: /* mandatory */ | |
c65b1445 | 446 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
447 | break; |
448 | case TEST_UNIT_READY: /* mandatory */ | |
c65b1445 DG |
449 | delay_override = 1; |
450 | errsts = check_readiness(SCpnt, 0, devip); | |
1da177e4 LT |
451 | break; |
452 | case RESERVE: | |
c65b1445 | 453 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
454 | break; |
455 | case RESERVE_10: | |
c65b1445 | 456 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
457 | break; |
458 | case RELEASE: | |
c65b1445 | 459 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
460 | break; |
461 | case RELEASE_10: | |
c65b1445 | 462 | errsts = check_readiness(SCpnt, 1, devip); |
1da177e4 LT |
463 | break; |
464 | case READ_CAPACITY: | |
465 | errsts = resp_readcap(SCpnt, devip); | |
466 | break; | |
c65b1445 DG |
467 | case SERVICE_ACTION_IN: |
468 | if (SAI_READ_CAPACITY_16 != cmd[1]) { | |
469 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
470 | INVALID_OPCODE, 0); | |
471 | errsts = check_condition_result; | |
472 | break; | |
473 | } | |
474 | errsts = resp_readcap16(SCpnt, devip); | |
475 | break; | |
5a09e398 HR |
476 | case MAINTENANCE_IN: |
477 | if (MI_REPORT_TARGET_PGS != cmd[1]) { | |
478 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
479 | INVALID_OPCODE, 0); | |
480 | errsts = check_condition_result; | |
481 | break; | |
482 | } | |
483 | errsts = resp_report_tgtpgs(SCpnt, devip); | |
484 | break; | |
1da177e4 LT |
485 | case READ_16: |
486 | case READ_12: | |
487 | case READ_10: | |
488 | case READ_6: | |
c65b1445 | 489 | if ((errsts = check_readiness(SCpnt, 0, devip))) |
1da177e4 | 490 | break; |
23183910 DG |
491 | if (scsi_debug_fake_rw) |
492 | break; | |
3de9f944 | 493 | get_data_transfer_info(cmd, &lba, &num); |
c65b1445 | 494 | errsts = resp_read(SCpnt, lba, num, devip); |
1da177e4 LT |
495 | if (inj_recovered && (0 == errsts)) { |
496 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
c65b1445 | 497 | THRESHOLD_EXCEEDED, 0); |
1da177e4 | 498 | errsts = check_condition_result; |
6f3cbf55 DG |
499 | } else if (inj_transport && (0 == errsts)) { |
500 | mk_sense_buffer(devip, ABORTED_COMMAND, | |
501 | TRANSPORT_PROBLEM, ACK_NAK_TO); | |
502 | errsts = check_condition_result; | |
503 | } | |
1da177e4 LT |
504 | break; |
505 | case REPORT_LUNS: /* mandatory, ignore unit attention */ | |
c65b1445 | 506 | delay_override = 1; |
1da177e4 LT |
507 | errsts = resp_report_luns(SCpnt, devip); |
508 | break; | |
509 | case VERIFY: /* 10 byte SBC-2 command */ | |
c65b1445 | 510 | errsts = check_readiness(SCpnt, 0, devip); |
1da177e4 LT |
511 | break; |
512 | case WRITE_16: | |
513 | case WRITE_12: | |
514 | case WRITE_10: | |
515 | case WRITE_6: | |
c65b1445 | 516 | if ((errsts = check_readiness(SCpnt, 0, devip))) |
1da177e4 | 517 | break; |
23183910 DG |
518 | if (scsi_debug_fake_rw) |
519 | break; | |
3de9f944 | 520 | get_data_transfer_info(cmd, &lba, &num); |
c65b1445 | 521 | errsts = resp_write(SCpnt, lba, num, devip); |
1da177e4 LT |
522 | if (inj_recovered && (0 == errsts)) { |
523 | mk_sense_buffer(devip, RECOVERED_ERROR, | |
c65b1445 | 524 | THRESHOLD_EXCEEDED, 0); |
1da177e4 LT |
525 | errsts = check_condition_result; |
526 | } | |
527 | break; | |
528 | case MODE_SENSE: | |
529 | case MODE_SENSE_10: | |
530 | errsts = resp_mode_sense(SCpnt, target, devip); | |
531 | break; | |
c65b1445 DG |
532 | case MODE_SELECT: |
533 | errsts = resp_mode_select(SCpnt, 1, devip); | |
534 | break; | |
535 | case MODE_SELECT_10: | |
536 | errsts = resp_mode_select(SCpnt, 0, devip); | |
537 | break; | |
538 | case LOG_SENSE: | |
539 | errsts = resp_log_sense(SCpnt, devip); | |
540 | break; | |
1da177e4 | 541 | case SYNCHRONIZE_CACHE: |
c65b1445 DG |
542 | delay_override = 1; |
543 | errsts = check_readiness(SCpnt, 0, devip); | |
1da177e4 | 544 | break; |
6f3cbf55 DG |
545 | case WRITE_BUFFER: |
546 | errsts = check_readiness(SCpnt, 1, devip); | |
547 | break; | |
c639d14e FT |
548 | case XDWRITEREAD_10: |
549 | if (!scsi_bidi_cmnd(SCpnt)) { | |
550 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
551 | INVALID_FIELD_IN_CDB, 0); | |
552 | errsts = check_condition_result; | |
553 | break; | |
554 | } | |
555 | ||
556 | errsts = check_readiness(SCpnt, 0, devip); | |
557 | if (errsts) | |
558 | break; | |
559 | if (scsi_debug_fake_rw) | |
560 | break; | |
561 | get_data_transfer_info(cmd, &lba, &num); | |
562 | errsts = resp_read(SCpnt, lba, num, devip); | |
563 | if (errsts) | |
564 | break; | |
565 | errsts = resp_write(SCpnt, lba, num, devip); | |
566 | if (errsts) | |
567 | break; | |
568 | errsts = resp_xdwriteread(SCpnt, lba, num, devip); | |
569 | break; | |
1da177e4 LT |
570 | default: |
571 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
572 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " | |
573 | "supported\n", *cmd); | |
c65b1445 | 574 | if ((errsts = check_readiness(SCpnt, 1, devip))) |
1da177e4 LT |
575 | break; /* Unit attention takes precedence */ |
576 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); | |
577 | errsts = check_condition_result; | |
578 | break; | |
579 | } | |
c65b1445 DG |
580 | return schedule_resp(SCpnt, devip, done, errsts, |
581 | (delay_override ? 0 : scsi_debug_delay)); | |
1da177e4 LT |
582 | } |
583 | ||
584 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) | |
585 | { | |
586 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
587 | printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); | |
588 | } | |
589 | return -EINVAL; | |
590 | /* return -ENOTTY; // correct return but upsets fdisk */ | |
591 | } | |
592 | ||
c65b1445 DG |
593 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
594 | struct sdebug_dev_info * devip) | |
1da177e4 LT |
595 | { |
596 | if (devip->reset) { | |
597 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
598 | printk(KERN_INFO "scsi_debug: Reporting Unit " | |
599 | "attention: power on reset\n"); | |
600 | devip->reset = 0; | |
601 | mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); | |
602 | return check_condition_result; | |
603 | } | |
c65b1445 DG |
604 | if ((0 == reset_only) && devip->stopped) { |
605 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
606 | printk(KERN_INFO "scsi_debug: Reporting Not " | |
607 | "ready: initializing command required\n"); | |
608 | mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, | |
609 | 0x2); | |
610 | return check_condition_result; | |
611 | } | |
1da177e4 LT |
612 | return 0; |
613 | } | |
614 | ||
615 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ | |
616 | static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, | |
617 | int arr_len) | |
618 | { | |
619 | int k, req_len, act_len, len, active; | |
620 | void * kaddr; | |
621 | void * kaddr_off; | |
072d0bb3 FT |
622 | struct scatterlist *sg; |
623 | struct scsi_data_buffer *sdb = scsi_in(scp); | |
1da177e4 | 624 | |
072d0bb3 | 625 | if (!sdb->length) |
1da177e4 | 626 | return 0; |
072d0bb3 | 627 | if (!sdb->table.sgl) |
1da177e4 | 628 | return (DID_ERROR << 16); |
072d0bb3 | 629 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
1da177e4 | 630 | return (DID_ERROR << 16); |
1da177e4 | 631 | active = 1; |
852e034d | 632 | req_len = act_len = 0; |
072d0bb3 | 633 | for_each_sg(sdb->table.sgl, sg, sdb->table.nents, k) { |
1da177e4 LT |
634 | if (active) { |
635 | kaddr = (unsigned char *) | |
45711f1a | 636 | kmap_atomic(sg_page(sg), KM_USER0); |
1da177e4 LT |
637 | if (NULL == kaddr) |
638 | return (DID_ERROR << 16); | |
852e034d JA |
639 | kaddr_off = (unsigned char *)kaddr + sg->offset; |
640 | len = sg->length; | |
1da177e4 LT |
641 | if ((req_len + len) > arr_len) { |
642 | active = 0; | |
643 | len = arr_len - req_len; | |
644 | } | |
645 | memcpy(kaddr_off, arr + req_len, len); | |
646 | kunmap_atomic(kaddr, KM_USER0); | |
647 | act_len += len; | |
648 | } | |
852e034d | 649 | req_len += sg->length; |
1da177e4 | 650 | } |
072d0bb3 FT |
651 | if (sdb->resid) |
652 | sdb->resid -= act_len; | |
c65b1445 | 653 | else |
072d0bb3 | 654 | sdb->resid = req_len - act_len; |
1da177e4 LT |
655 | return 0; |
656 | } | |
657 | ||
658 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ | |
659 | static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, | |
660 | int max_arr_len) | |
661 | { | |
662 | int k, req_len, len, fin; | |
663 | void * kaddr; | |
664 | void * kaddr_off; | |
852e034d | 665 | struct scatterlist * sg; |
1da177e4 | 666 | |
c73961e5 | 667 | if (0 == scsi_bufflen(scp)) |
1da177e4 | 668 | return 0; |
c73961e5 | 669 | if (NULL == scsi_sglist(scp)) |
1da177e4 | 670 | return -1; |
072d0bb3 | 671 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
1da177e4 | 672 | return -1; |
852e034d | 673 | req_len = fin = 0; |
c73961e5 | 674 | scsi_for_each_sg(scp, sg, scsi_sg_count(scp), k) { |
45711f1a | 675 | kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); |
1da177e4 LT |
676 | if (NULL == kaddr) |
677 | return -1; | |
852e034d JA |
678 | kaddr_off = (unsigned char *)kaddr + sg->offset; |
679 | len = sg->length; | |
1da177e4 LT |
680 | if ((req_len + len) > max_arr_len) { |
681 | len = max_arr_len - req_len; | |
682 | fin = 1; | |
683 | } | |
684 | memcpy(arr + req_len, kaddr_off, len); | |
685 | kunmap_atomic(kaddr, KM_USER0); | |
686 | if (fin) | |
687 | return req_len + len; | |
852e034d | 688 | req_len += sg->length; |
1da177e4 LT |
689 | } |
690 | return req_len; | |
691 | } | |
692 | ||
693 | ||
694 | static const char * inq_vendor_id = "Linux "; | |
695 | static const char * inq_product_id = "scsi_debug "; | |
696 | static const char * inq_product_rev = "0004"; | |
697 | ||
5a09e398 HR |
698 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
699 | int target_dev_id, int dev_id_num, | |
700 | const char * dev_id_str, | |
c65b1445 | 701 | int dev_id_str_len) |
1da177e4 | 702 | { |
c65b1445 DG |
703 | int num, port_a; |
704 | char b[32]; | |
1da177e4 | 705 | |
c65b1445 | 706 | port_a = target_dev_id + 1; |
1da177e4 LT |
707 | /* T10 vendor identifier field format (faked) */ |
708 | arr[0] = 0x2; /* ASCII */ | |
709 | arr[1] = 0x1; | |
710 | arr[2] = 0x0; | |
711 | memcpy(&arr[4], inq_vendor_id, 8); | |
712 | memcpy(&arr[12], inq_product_id, 16); | |
713 | memcpy(&arr[28], dev_id_str, dev_id_str_len); | |
714 | num = 8 + 16 + dev_id_str_len; | |
715 | arr[3] = num; | |
716 | num += 4; | |
c65b1445 DG |
717 | if (dev_id_num >= 0) { |
718 | /* NAA-5, Logical unit identifier (binary) */ | |
719 | arr[num++] = 0x1; /* binary (not necessarily sas) */ | |
720 | arr[num++] = 0x3; /* PIV=0, lu, naa */ | |
721 | arr[num++] = 0x0; | |
722 | arr[num++] = 0x8; | |
723 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ | |
724 | arr[num++] = 0x33; | |
725 | arr[num++] = 0x33; | |
726 | arr[num++] = 0x30; | |
727 | arr[num++] = (dev_id_num >> 24); | |
728 | arr[num++] = (dev_id_num >> 16) & 0xff; | |
729 | arr[num++] = (dev_id_num >> 8) & 0xff; | |
730 | arr[num++] = dev_id_num & 0xff; | |
731 | /* Target relative port number */ | |
732 | arr[num++] = 0x61; /* proto=sas, binary */ | |
733 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ | |
734 | arr[num++] = 0x0; /* reserved */ | |
735 | arr[num++] = 0x4; /* length */ | |
736 | arr[num++] = 0x0; /* reserved */ | |
737 | arr[num++] = 0x0; /* reserved */ | |
738 | arr[num++] = 0x0; | |
739 | arr[num++] = 0x1; /* relative port A */ | |
740 | } | |
741 | /* NAA-5, Target port identifier */ | |
742 | arr[num++] = 0x61; /* proto=sas, binary */ | |
743 | arr[num++] = 0x93; /* piv=1, target port, naa */ | |
744 | arr[num++] = 0x0; | |
745 | arr[num++] = 0x8; | |
746 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
747 | arr[num++] = 0x22; | |
748 | arr[num++] = 0x22; | |
749 | arr[num++] = 0x20; | |
750 | arr[num++] = (port_a >> 24); | |
751 | arr[num++] = (port_a >> 16) & 0xff; | |
752 | arr[num++] = (port_a >> 8) & 0xff; | |
753 | arr[num++] = port_a & 0xff; | |
5a09e398 HR |
754 | /* NAA-5, Target port group identifier */ |
755 | arr[num++] = 0x61; /* proto=sas, binary */ | |
756 | arr[num++] = 0x95; /* piv=1, target port group id */ | |
757 | arr[num++] = 0x0; | |
758 | arr[num++] = 0x4; | |
759 | arr[num++] = 0; | |
760 | arr[num++] = 0; | |
761 | arr[num++] = (port_group_id >> 8) & 0xff; | |
762 | arr[num++] = port_group_id & 0xff; | |
c65b1445 DG |
763 | /* NAA-5, Target device identifier */ |
764 | arr[num++] = 0x61; /* proto=sas, binary */ | |
765 | arr[num++] = 0xa3; /* piv=1, target device, naa */ | |
766 | arr[num++] = 0x0; | |
767 | arr[num++] = 0x8; | |
768 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ | |
769 | arr[num++] = 0x22; | |
770 | arr[num++] = 0x22; | |
771 | arr[num++] = 0x20; | |
772 | arr[num++] = (target_dev_id >> 24); | |
773 | arr[num++] = (target_dev_id >> 16) & 0xff; | |
774 | arr[num++] = (target_dev_id >> 8) & 0xff; | |
775 | arr[num++] = target_dev_id & 0xff; | |
776 | /* SCSI name string: Target device identifier */ | |
777 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ | |
778 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ | |
779 | arr[num++] = 0x0; | |
780 | arr[num++] = 24; | |
781 | memcpy(arr + num, "naa.52222220", 12); | |
782 | num += 12; | |
783 | snprintf(b, sizeof(b), "%08X", target_dev_id); | |
784 | memcpy(arr + num, b, 8); | |
785 | num += 8; | |
786 | memset(arr + num, 0, 4); | |
787 | num += 4; | |
788 | return num; | |
789 | } | |
790 | ||
791 | ||
792 | static unsigned char vpd84_data[] = { | |
793 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, | |
794 | 0x22,0x22,0x22,0x0,0xbb,0x1, | |
795 | 0x22,0x22,0x22,0x0,0xbb,0x2, | |
796 | }; | |
797 | ||
798 | static int inquiry_evpd_84(unsigned char * arr) | |
799 | { | |
800 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); | |
801 | return sizeof(vpd84_data); | |
802 | } | |
803 | ||
804 | static int inquiry_evpd_85(unsigned char * arr) | |
805 | { | |
806 | int num = 0; | |
807 | const char * na1 = "https://www.kernel.org/config"; | |
808 | const char * na2 = "http://www.kernel.org/log"; | |
809 | int plen, olen; | |
810 | ||
811 | arr[num++] = 0x1; /* lu, storage config */ | |
812 | arr[num++] = 0x0; /* reserved */ | |
813 | arr[num++] = 0x0; | |
814 | olen = strlen(na1); | |
815 | plen = olen + 1; | |
816 | if (plen % 4) | |
817 | plen = ((plen / 4) + 1) * 4; | |
818 | arr[num++] = plen; /* length, null termianted, padded */ | |
819 | memcpy(arr + num, na1, olen); | |
820 | memset(arr + num + olen, 0, plen - olen); | |
821 | num += plen; | |
822 | ||
823 | arr[num++] = 0x4; /* lu, logging */ | |
824 | arr[num++] = 0x0; /* reserved */ | |
825 | arr[num++] = 0x0; | |
826 | olen = strlen(na2); | |
827 | plen = olen + 1; | |
828 | if (plen % 4) | |
829 | plen = ((plen / 4) + 1) * 4; | |
830 | arr[num++] = plen; /* length, null terminated, padded */ | |
831 | memcpy(arr + num, na2, olen); | |
832 | memset(arr + num + olen, 0, plen - olen); | |
833 | num += plen; | |
834 | ||
835 | return num; | |
836 | } | |
837 | ||
838 | /* SCSI ports VPD page */ | |
839 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) | |
840 | { | |
841 | int num = 0; | |
842 | int port_a, port_b; | |
843 | ||
844 | port_a = target_dev_id + 1; | |
845 | port_b = port_a + 1; | |
846 | arr[num++] = 0x0; /* reserved */ | |
847 | arr[num++] = 0x0; /* reserved */ | |
848 | arr[num++] = 0x0; | |
849 | arr[num++] = 0x1; /* relative port 1 (primary) */ | |
850 | memset(arr + num, 0, 6); | |
851 | num += 6; | |
852 | arr[num++] = 0x0; | |
853 | arr[num++] = 12; /* length tp descriptor */ | |
854 | /* naa-5 target port identifier (A) */ | |
855 | arr[num++] = 0x61; /* proto=sas, binary */ | |
856 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
857 | arr[num++] = 0x0; /* reserved */ | |
858 | arr[num++] = 0x8; /* length */ | |
859 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
860 | arr[num++] = 0x22; | |
861 | arr[num++] = 0x22; | |
862 | arr[num++] = 0x20; | |
863 | arr[num++] = (port_a >> 24); | |
864 | arr[num++] = (port_a >> 16) & 0xff; | |
865 | arr[num++] = (port_a >> 8) & 0xff; | |
866 | arr[num++] = port_a & 0xff; | |
867 | ||
868 | arr[num++] = 0x0; /* reserved */ | |
869 | arr[num++] = 0x0; /* reserved */ | |
870 | arr[num++] = 0x0; | |
871 | arr[num++] = 0x2; /* relative port 2 (secondary) */ | |
872 | memset(arr + num, 0, 6); | |
873 | num += 6; | |
874 | arr[num++] = 0x0; | |
875 | arr[num++] = 12; /* length tp descriptor */ | |
876 | /* naa-5 target port identifier (B) */ | |
877 | arr[num++] = 0x61; /* proto=sas, binary */ | |
878 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ | |
879 | arr[num++] = 0x0; /* reserved */ | |
880 | arr[num++] = 0x8; /* length */ | |
881 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ | |
882 | arr[num++] = 0x22; | |
883 | arr[num++] = 0x22; | |
884 | arr[num++] = 0x20; | |
885 | arr[num++] = (port_b >> 24); | |
886 | arr[num++] = (port_b >> 16) & 0xff; | |
887 | arr[num++] = (port_b >> 8) & 0xff; | |
888 | arr[num++] = port_b & 0xff; | |
889 | ||
890 | return num; | |
891 | } | |
892 | ||
893 | ||
894 | static unsigned char vpd89_data[] = { | |
895 | /* from 4th byte */ 0,0,0,0, | |
896 | 'l','i','n','u','x',' ',' ',' ', | |
897 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', | |
898 | '1','2','3','4', | |
899 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, | |
900 | 0xec,0,0,0, | |
901 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, | |
902 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, | |
903 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, | |
904 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, | |
905 | 0x53,0x41, | |
906 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
907 | 0x20,0x20, | |
908 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, | |
909 | 0x10,0x80, | |
910 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, | |
911 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, | |
912 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, | |
913 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, | |
914 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, | |
915 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, | |
916 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, | |
917 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
918 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
919 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
920 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, | |
921 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, | |
922 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, | |
923 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, | |
924 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
925 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
926 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
927 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
928 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
929 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
930 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
931 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
932 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
933 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
934 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
935 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, | |
936 | }; | |
937 | ||
938 | static int inquiry_evpd_89(unsigned char * arr) | |
939 | { | |
940 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); | |
941 | return sizeof(vpd89_data); | |
942 | } | |
943 | ||
944 | ||
945 | static unsigned char vpdb0_data[] = { | |
946 | /* from 4th byte */ 0,0,0,4, | |
947 | 0,0,0x4,0, | |
948 | 0,0,0,64, | |
949 | }; | |
950 | ||
951 | static int inquiry_evpd_b0(unsigned char * arr) | |
952 | { | |
953 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); | |
954 | if (sdebug_store_sectors > 0x400) { | |
955 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; | |
956 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; | |
957 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; | |
958 | arr[7] = sdebug_store_sectors & 0xff; | |
959 | } | |
960 | return sizeof(vpdb0_data); | |
1da177e4 LT |
961 | } |
962 | ||
963 | ||
964 | #define SDEBUG_LONG_INQ_SZ 96 | |
c65b1445 | 965 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
1da177e4 LT |
966 | |
967 | static int resp_inquiry(struct scsi_cmnd * scp, int target, | |
968 | struct sdebug_dev_info * devip) | |
969 | { | |
970 | unsigned char pq_pdt; | |
5a09e398 | 971 | unsigned char * arr; |
1da177e4 | 972 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
5a09e398 | 973 | int alloc_len, n, ret; |
1da177e4 LT |
974 | |
975 | alloc_len = (cmd[3] << 8) + cmd[4]; | |
6f3cbf55 DG |
976 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
977 | if (! arr) | |
978 | return DID_REQUEUE << 16; | |
c65b1445 DG |
979 | if (devip->wlun) |
980 | pq_pdt = 0x1e; /* present, wlun */ | |
981 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) | |
982 | pq_pdt = 0x7f; /* not present, no device type */ | |
983 | else | |
984 | pq_pdt = (scsi_debug_ptype & 0x1f); | |
1da177e4 LT |
985 | arr[0] = pq_pdt; |
986 | if (0x2 & cmd[1]) { /* CMDDT bit set */ | |
987 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
988 | 0); | |
5a09e398 | 989 | kfree(arr); |
1da177e4 LT |
990 | return check_condition_result; |
991 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ | |
5a09e398 | 992 | int lu_id_num, port_group_id, target_dev_id, len; |
c65b1445 DG |
993 | char lu_id_str[6]; |
994 | int host_no = devip->sdbg_host->shost->host_no; | |
1da177e4 | 995 | |
5a09e398 HR |
996 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
997 | (devip->channel & 0x7f); | |
23183910 DG |
998 | if (0 == scsi_debug_vpd_use_hostno) |
999 | host_no = 0; | |
c65b1445 DG |
1000 | lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
1001 | (devip->target * 1000) + devip->lun); | |
1002 | target_dev_id = ((host_no + 1) * 2000) + | |
1003 | (devip->target * 1000) - 3; | |
1004 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); | |
1da177e4 | 1005 | if (0 == cmd[2]) { /* supported vital product data pages */ |
c65b1445 DG |
1006 | arr[1] = cmd[2]; /*sanity */ |
1007 | n = 4; | |
1008 | arr[n++] = 0x0; /* this page */ | |
1009 | arr[n++] = 0x80; /* unit serial number */ | |
1010 | arr[n++] = 0x83; /* device identification */ | |
1011 | arr[n++] = 0x84; /* software interface ident. */ | |
1012 | arr[n++] = 0x85; /* management network addresses */ | |
1013 | arr[n++] = 0x86; /* extended inquiry */ | |
1014 | arr[n++] = 0x87; /* mode page policy */ | |
1015 | arr[n++] = 0x88; /* SCSI ports */ | |
1016 | arr[n++] = 0x89; /* ATA information */ | |
1017 | arr[n++] = 0xb0; /* Block limits (SBC) */ | |
1018 | arr[3] = n - 4; /* number of supported VPD pages */ | |
1da177e4 | 1019 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
c65b1445 | 1020 | arr[1] = cmd[2]; /*sanity */ |
1da177e4 | 1021 | arr[3] = len; |
c65b1445 | 1022 | memcpy(&arr[4], lu_id_str, len); |
1da177e4 | 1023 | } else if (0x83 == cmd[2]) { /* device identification */ |
c65b1445 | 1024 | arr[1] = cmd[2]; /*sanity */ |
5a09e398 HR |
1025 | arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
1026 | target_dev_id, lu_id_num, | |
1027 | lu_id_str, len); | |
c65b1445 DG |
1028 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
1029 | arr[1] = cmd[2]; /*sanity */ | |
1030 | arr[3] = inquiry_evpd_84(&arr[4]); | |
1031 | } else if (0x85 == cmd[2]) { /* Management network addresses */ | |
1032 | arr[1] = cmd[2]; /*sanity */ | |
1033 | arr[3] = inquiry_evpd_85(&arr[4]); | |
1034 | } else if (0x86 == cmd[2]) { /* extended inquiry */ | |
1035 | arr[1] = cmd[2]; /*sanity */ | |
1036 | arr[3] = 0x3c; /* number of following entries */ | |
1037 | arr[4] = 0x0; /* no protection stuff */ | |
1038 | arr[5] = 0x7; /* head of q, ordered + simple q's */ | |
1039 | } else if (0x87 == cmd[2]) { /* mode page policy */ | |
1040 | arr[1] = cmd[2]; /*sanity */ | |
1041 | arr[3] = 0x8; /* number of following entries */ | |
1042 | arr[4] = 0x2; /* disconnect-reconnect mp */ | |
1043 | arr[6] = 0x80; /* mlus, shared */ | |
1044 | arr[8] = 0x18; /* protocol specific lu */ | |
1045 | arr[10] = 0x82; /* mlus, per initiator port */ | |
1046 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ | |
1047 | arr[1] = cmd[2]; /*sanity */ | |
1048 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); | |
1049 | } else if (0x89 == cmd[2]) { /* ATA information */ | |
1050 | arr[1] = cmd[2]; /*sanity */ | |
1051 | n = inquiry_evpd_89(&arr[4]); | |
1052 | arr[2] = (n >> 8); | |
1053 | arr[3] = (n & 0xff); | |
1054 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ | |
1055 | arr[1] = cmd[2]; /*sanity */ | |
1056 | arr[3] = inquiry_evpd_b0(&arr[4]); | |
1da177e4 LT |
1057 | } else { |
1058 | /* Illegal request, invalid field in cdb */ | |
1059 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1060 | INVALID_FIELD_IN_CDB, 0); | |
5a09e398 | 1061 | kfree(arr); |
1da177e4 LT |
1062 | return check_condition_result; |
1063 | } | |
c65b1445 | 1064 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
5a09e398 | 1065 | ret = fill_from_dev_buffer(scp, arr, |
c65b1445 | 1066 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
5a09e398 HR |
1067 | kfree(arr); |
1068 | return ret; | |
1da177e4 LT |
1069 | } |
1070 | /* drops through here for a standard inquiry */ | |
1071 | arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */ | |
1072 | arr[2] = scsi_debug_scsi_level; | |
1073 | arr[3] = 2; /* response_data_format==2 */ | |
1074 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; | |
5a09e398 HR |
1075 | if (0 == scsi_debug_vpd_use_hostno) |
1076 | arr[5] = 0x10; /* claim: implicit TGPS */ | |
c65b1445 | 1077 | arr[6] = 0x10; /* claim: MultiP */ |
1da177e4 | 1078 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
c65b1445 | 1079 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
1da177e4 LT |
1080 | memcpy(&arr[8], inq_vendor_id, 8); |
1081 | memcpy(&arr[16], inq_product_id, 16); | |
1082 | memcpy(&arr[32], inq_product_rev, 4); | |
1083 | /* version descriptors (2 bytes each) follow */ | |
c65b1445 DG |
1084 | arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ |
1085 | arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ | |
1086 | n = 62; | |
1da177e4 | 1087 | if (scsi_debug_ptype == 0) { |
c65b1445 | 1088 | arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ |
1da177e4 | 1089 | } else if (scsi_debug_ptype == 1) { |
c65b1445 | 1090 | arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ |
1da177e4 | 1091 | } |
c65b1445 | 1092 | arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ |
5a09e398 | 1093 | ret = fill_from_dev_buffer(scp, arr, |
1da177e4 | 1094 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
5a09e398 HR |
1095 | kfree(arr); |
1096 | return ret; | |
1da177e4 LT |
1097 | } |
1098 | ||
1099 | static int resp_requests(struct scsi_cmnd * scp, | |
1100 | struct sdebug_dev_info * devip) | |
1101 | { | |
1102 | unsigned char * sbuff; | |
1103 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1104 | unsigned char arr[SDEBUG_SENSE_LEN]; | |
c65b1445 | 1105 | int want_dsense; |
1da177e4 LT |
1106 | int len = 18; |
1107 | ||
c65b1445 | 1108 | memset(arr, 0, sizeof(arr)); |
1da177e4 | 1109 | if (devip->reset == 1) |
c65b1445 DG |
1110 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
1111 | want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; | |
1da177e4 | 1112 | sbuff = devip->sense_buff; |
c65b1445 DG |
1113 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
1114 | if (want_dsense) { | |
1115 | arr[0] = 0x72; | |
1116 | arr[1] = 0x0; /* NO_SENSE in sense_key */ | |
1117 | arr[2] = THRESHOLD_EXCEEDED; | |
1118 | arr[3] = 0xff; /* TEST set and MRIE==6 */ | |
1119 | } else { | |
1120 | arr[0] = 0x70; | |
1121 | arr[2] = 0x0; /* NO_SENSE in sense_key */ | |
1122 | arr[7] = 0xa; /* 18 byte sense buffer */ | |
1123 | arr[12] = THRESHOLD_EXCEEDED; | |
1124 | arr[13] = 0xff; /* TEST set and MRIE==6 */ | |
1125 | } | |
c65b1445 | 1126 | } else { |
1da177e4 | 1127 | memcpy(arr, sbuff, SDEBUG_SENSE_LEN); |
c65b1445 DG |
1128 | if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
1129 | /* DESC bit set and sense_buff in fixed format */ | |
1130 | memset(arr, 0, sizeof(arr)); | |
1131 | arr[0] = 0x72; | |
1132 | arr[1] = sbuff[2]; /* sense key */ | |
1133 | arr[2] = sbuff[12]; /* asc */ | |
1134 | arr[3] = sbuff[13]; /* ascq */ | |
1135 | len = 8; | |
1136 | } | |
1137 | } | |
1138 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); | |
1da177e4 LT |
1139 | return fill_from_dev_buffer(scp, arr, len); |
1140 | } | |
1141 | ||
c65b1445 DG |
1142 | static int resp_start_stop(struct scsi_cmnd * scp, |
1143 | struct sdebug_dev_info * devip) | |
1144 | { | |
1145 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1146 | int power_cond, errsts, start; | |
1147 | ||
1148 | if ((errsts = check_readiness(scp, 1, devip))) | |
1149 | return errsts; | |
1150 | power_cond = (cmd[4] & 0xf0) >> 4; | |
1151 | if (power_cond) { | |
1152 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1153 | 0); | |
1154 | return check_condition_result; | |
1155 | } | |
1156 | start = cmd[4] & 1; | |
1157 | if (start == devip->stopped) | |
1158 | devip->stopped = !start; | |
1159 | return 0; | |
1160 | } | |
1161 | ||
1da177e4 LT |
1162 | #define SDEBUG_READCAP_ARR_SZ 8 |
1163 | static int resp_readcap(struct scsi_cmnd * scp, | |
1164 | struct sdebug_dev_info * devip) | |
1165 | { | |
1166 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; | |
c65b1445 | 1167 | unsigned int capac; |
1da177e4 LT |
1168 | int errsts; |
1169 | ||
c65b1445 | 1170 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 | 1171 | return errsts; |
c65b1445 DG |
1172 | /* following just in case virtual_gb changed */ |
1173 | if (scsi_debug_virtual_gb > 0) { | |
1174 | sdebug_capacity = 2048 * 1024; | |
1175 | sdebug_capacity *= scsi_debug_virtual_gb; | |
1176 | } else | |
1177 | sdebug_capacity = sdebug_store_sectors; | |
1da177e4 | 1178 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
c65b1445 DG |
1179 | if (sdebug_capacity < 0xffffffff) { |
1180 | capac = (unsigned int)sdebug_capacity - 1; | |
1181 | arr[0] = (capac >> 24); | |
1182 | arr[1] = (capac >> 16) & 0xff; | |
1183 | arr[2] = (capac >> 8) & 0xff; | |
1184 | arr[3] = capac & 0xff; | |
1185 | } else { | |
1186 | arr[0] = 0xff; | |
1187 | arr[1] = 0xff; | |
1188 | arr[2] = 0xff; | |
1189 | arr[3] = 0xff; | |
1190 | } | |
1da177e4 LT |
1191 | arr[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; |
1192 | arr[7] = SECT_SIZE_PER(target) & 0xff; | |
1193 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); | |
1194 | } | |
1195 | ||
c65b1445 DG |
1196 | #define SDEBUG_READCAP16_ARR_SZ 32 |
1197 | static int resp_readcap16(struct scsi_cmnd * scp, | |
1198 | struct sdebug_dev_info * devip) | |
1199 | { | |
1200 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1201 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; | |
1202 | unsigned long long capac; | |
1203 | int errsts, k, alloc_len; | |
1204 | ||
1205 | if ((errsts = check_readiness(scp, 1, devip))) | |
1206 | return errsts; | |
1207 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) | |
1208 | + cmd[13]); | |
1209 | /* following just in case virtual_gb changed */ | |
1210 | if (scsi_debug_virtual_gb > 0) { | |
1211 | sdebug_capacity = 2048 * 1024; | |
1212 | sdebug_capacity *= scsi_debug_virtual_gb; | |
1213 | } else | |
1214 | sdebug_capacity = sdebug_store_sectors; | |
1215 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); | |
1216 | capac = sdebug_capacity - 1; | |
1217 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1218 | arr[7 - k] = capac & 0xff; | |
1219 | arr[8] = (SECT_SIZE_PER(target) >> 24) & 0xff; | |
1220 | arr[9] = (SECT_SIZE_PER(target) >> 16) & 0xff; | |
1221 | arr[10] = (SECT_SIZE_PER(target) >> 8) & 0xff; | |
1222 | arr[11] = SECT_SIZE_PER(target) & 0xff; | |
1223 | return fill_from_dev_buffer(scp, arr, | |
1224 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); | |
1225 | } | |
1226 | ||
5a09e398 HR |
1227 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
1228 | ||
1229 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, | |
1230 | struct sdebug_dev_info * devip) | |
1231 | { | |
1232 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1233 | unsigned char * arr; | |
1234 | int host_no = devip->sdbg_host->shost->host_no; | |
1235 | int n, ret, alen, rlen; | |
1236 | int port_group_a, port_group_b, port_a, port_b; | |
1237 | ||
1238 | alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) | |
1239 | + cmd[9]); | |
1240 | ||
6f3cbf55 DG |
1241 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
1242 | if (! arr) | |
1243 | return DID_REQUEUE << 16; | |
5a09e398 HR |
1244 | /* |
1245 | * EVPD page 0x88 states we have two ports, one | |
1246 | * real and a fake port with no device connected. | |
1247 | * So we create two port groups with one port each | |
1248 | * and set the group with port B to unavailable. | |
1249 | */ | |
1250 | port_a = 0x1; /* relative port A */ | |
1251 | port_b = 0x2; /* relative port B */ | |
1252 | port_group_a = (((host_no + 1) & 0x7f) << 8) + | |
1253 | (devip->channel & 0x7f); | |
1254 | port_group_b = (((host_no + 1) & 0x7f) << 8) + | |
1255 | (devip->channel & 0x7f) + 0x80; | |
1256 | ||
1257 | /* | |
1258 | * The asymmetric access state is cycled according to the host_id. | |
1259 | */ | |
1260 | n = 4; | |
1261 | if (0 == scsi_debug_vpd_use_hostno) { | |
1262 | arr[n++] = host_no % 3; /* Asymm access state */ | |
1263 | arr[n++] = 0x0F; /* claim: all states are supported */ | |
1264 | } else { | |
1265 | arr[n++] = 0x0; /* Active/Optimized path */ | |
1266 | arr[n++] = 0x01; /* claim: only support active/optimized paths */ | |
1267 | } | |
1268 | arr[n++] = (port_group_a >> 8) & 0xff; | |
1269 | arr[n++] = port_group_a & 0xff; | |
1270 | arr[n++] = 0; /* Reserved */ | |
1271 | arr[n++] = 0; /* Status code */ | |
1272 | arr[n++] = 0; /* Vendor unique */ | |
1273 | arr[n++] = 0x1; /* One port per group */ | |
1274 | arr[n++] = 0; /* Reserved */ | |
1275 | arr[n++] = 0; /* Reserved */ | |
1276 | arr[n++] = (port_a >> 8) & 0xff; | |
1277 | arr[n++] = port_a & 0xff; | |
1278 | arr[n++] = 3; /* Port unavailable */ | |
1279 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ | |
1280 | arr[n++] = (port_group_b >> 8) & 0xff; | |
1281 | arr[n++] = port_group_b & 0xff; | |
1282 | arr[n++] = 0; /* Reserved */ | |
1283 | arr[n++] = 0; /* Status code */ | |
1284 | arr[n++] = 0; /* Vendor unique */ | |
1285 | arr[n++] = 0x1; /* One port per group */ | |
1286 | arr[n++] = 0; /* Reserved */ | |
1287 | arr[n++] = 0; /* Reserved */ | |
1288 | arr[n++] = (port_b >> 8) & 0xff; | |
1289 | arr[n++] = port_b & 0xff; | |
1290 | ||
1291 | rlen = n - 4; | |
1292 | arr[0] = (rlen >> 24) & 0xff; | |
1293 | arr[1] = (rlen >> 16) & 0xff; | |
1294 | arr[2] = (rlen >> 8) & 0xff; | |
1295 | arr[3] = rlen & 0xff; | |
1296 | ||
1297 | /* | |
1298 | * Return the smallest value of either | |
1299 | * - The allocated length | |
1300 | * - The constructed command length | |
1301 | * - The maximum array size | |
1302 | */ | |
1303 | rlen = min(alen,n); | |
1304 | ret = fill_from_dev_buffer(scp, arr, | |
1305 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); | |
1306 | kfree(arr); | |
1307 | return ret; | |
1308 | } | |
1309 | ||
1da177e4 LT |
1310 | /* <<Following mode page info copied from ST318451LW>> */ |
1311 | ||
1312 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) | |
1313 | { /* Read-Write Error Recovery page for mode_sense */ | |
1314 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, | |
1315 | 5, 0, 0xff, 0xff}; | |
1316 | ||
1317 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); | |
1318 | if (1 == pcontrol) | |
1319 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); | |
1320 | return sizeof(err_recov_pg); | |
1321 | } | |
1322 | ||
1323 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) | |
1324 | { /* Disconnect-Reconnect page for mode_sense */ | |
1325 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, | |
1326 | 0, 0, 0, 0, 0, 0, 0, 0}; | |
1327 | ||
1328 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); | |
1329 | if (1 == pcontrol) | |
1330 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); | |
1331 | return sizeof(disconnect_pg); | |
1332 | } | |
1333 | ||
1334 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) | |
1335 | { /* Format device page for mode_sense */ | |
1336 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, | |
1337 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1338 | 0, 0, 0, 0, 0x40, 0, 0, 0}; | |
1339 | ||
1340 | memcpy(p, format_pg, sizeof(format_pg)); | |
1341 | p[10] = (sdebug_sectors_per >> 8) & 0xff; | |
1342 | p[11] = sdebug_sectors_per & 0xff; | |
1343 | p[12] = (SECT_SIZE >> 8) & 0xff; | |
1344 | p[13] = SECT_SIZE & 0xff; | |
1345 | if (DEV_REMOVEABLE(target)) | |
1346 | p[20] |= 0x20; /* should agree with INQUIRY */ | |
1347 | if (1 == pcontrol) | |
1348 | memset(p + 2, 0, sizeof(format_pg) - 2); | |
1349 | return sizeof(format_pg); | |
1350 | } | |
1351 | ||
1352 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) | |
1353 | { /* Caching page for mode_sense */ | |
1354 | unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, | |
1355 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; | |
1356 | ||
1357 | memcpy(p, caching_pg, sizeof(caching_pg)); | |
1358 | if (1 == pcontrol) | |
1359 | memset(p + 2, 0, sizeof(caching_pg) - 2); | |
1360 | return sizeof(caching_pg); | |
1361 | } | |
1362 | ||
1363 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) | |
1364 | { /* Control mode page for mode_sense */ | |
c65b1445 DG |
1365 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
1366 | 0, 0, 0, 0}; | |
1367 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, | |
1da177e4 LT |
1368 | 0, 0, 0x2, 0x4b}; |
1369 | ||
1370 | if (scsi_debug_dsense) | |
1371 | ctrl_m_pg[2] |= 0x4; | |
c65b1445 DG |
1372 | else |
1373 | ctrl_m_pg[2] &= ~0x4; | |
1da177e4 LT |
1374 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
1375 | if (1 == pcontrol) | |
c65b1445 DG |
1376 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
1377 | else if (2 == pcontrol) | |
1378 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); | |
1da177e4 LT |
1379 | return sizeof(ctrl_m_pg); |
1380 | } | |
1381 | ||
c65b1445 | 1382 | |
1da177e4 LT |
1383 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
1384 | { /* Informational Exceptions control mode page for mode_sense */ | |
c65b1445 DG |
1385 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
1386 | 0, 0, 0x0, 0x0}; | |
1387 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, | |
1388 | 0, 0, 0x0, 0x0}; | |
1389 | ||
1da177e4 LT |
1390 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
1391 | if (1 == pcontrol) | |
c65b1445 DG |
1392 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
1393 | else if (2 == pcontrol) | |
1394 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); | |
1da177e4 LT |
1395 | return sizeof(iec_m_pg); |
1396 | } | |
1397 | ||
c65b1445 DG |
1398 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
1399 | { /* SAS SSP mode page - short format for mode_sense */ | |
1400 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, | |
1401 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; | |
1402 | ||
1403 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); | |
1404 | if (1 == pcontrol) | |
1405 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); | |
1406 | return sizeof(sas_sf_m_pg); | |
1407 | } | |
1408 | ||
1409 | ||
1410 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, | |
1411 | int target_dev_id) | |
1412 | { /* SAS phy control and discover mode page for mode_sense */ | |
1413 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, | |
1414 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1415 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1416 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1417 | 0x2, 0, 0, 0, 0, 0, 0, 0, | |
1418 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1419 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1420 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, | |
1421 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, | |
1422 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, | |
1423 | 0x3, 0, 0, 0, 0, 0, 0, 0, | |
1424 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, | |
1425 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1426 | }; | |
1427 | int port_a, port_b; | |
1428 | ||
1429 | port_a = target_dev_id + 1; | |
1430 | port_b = port_a + 1; | |
1431 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); | |
1432 | p[20] = (port_a >> 24); | |
1433 | p[21] = (port_a >> 16) & 0xff; | |
1434 | p[22] = (port_a >> 8) & 0xff; | |
1435 | p[23] = port_a & 0xff; | |
1436 | p[48 + 20] = (port_b >> 24); | |
1437 | p[48 + 21] = (port_b >> 16) & 0xff; | |
1438 | p[48 + 22] = (port_b >> 8) & 0xff; | |
1439 | p[48 + 23] = port_b & 0xff; | |
1440 | if (1 == pcontrol) | |
1441 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); | |
1442 | return sizeof(sas_pcd_m_pg); | |
1443 | } | |
1444 | ||
1445 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) | |
1446 | { /* SAS SSP shared protocol specific port mode subpage */ | |
1447 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, | |
1448 | 0, 0, 0, 0, 0, 0, 0, 0, | |
1449 | }; | |
1450 | ||
1451 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); | |
1452 | if (1 == pcontrol) | |
1453 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); | |
1454 | return sizeof(sas_sha_m_pg); | |
1455 | } | |
1456 | ||
1da177e4 LT |
1457 | #define SDEBUG_MAX_MSENSE_SZ 256 |
1458 | ||
1459 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, | |
1460 | struct sdebug_dev_info * devip) | |
1461 | { | |
23183910 DG |
1462 | unsigned char dbd, llbaa; |
1463 | int pcontrol, pcode, subpcode, bd_len; | |
1da177e4 | 1464 | unsigned char dev_spec; |
23183910 | 1465 | int k, alloc_len, msense_6, offset, len, errsts, target_dev_id; |
1da177e4 LT |
1466 | unsigned char * ap; |
1467 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; | |
1468 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1469 | ||
c65b1445 | 1470 | if ((errsts = check_readiness(scp, 1, devip))) |
1da177e4 | 1471 | return errsts; |
23183910 | 1472 | dbd = !!(cmd[1] & 0x8); |
1da177e4 LT |
1473 | pcontrol = (cmd[2] & 0xc0) >> 6; |
1474 | pcode = cmd[2] & 0x3f; | |
1475 | subpcode = cmd[3]; | |
1476 | msense_6 = (MODE_SENSE == cmd[0]); | |
23183910 DG |
1477 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
1478 | if ((0 == scsi_debug_ptype) && (0 == dbd)) | |
1479 | bd_len = llbaa ? 16 : 8; | |
1480 | else | |
1481 | bd_len = 0; | |
1da177e4 LT |
1482 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
1483 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); | |
1484 | if (0x3 == pcontrol) { /* Saving values not supported */ | |
1485 | mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, | |
1486 | 0); | |
1487 | return check_condition_result; | |
1488 | } | |
c65b1445 DG |
1489 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
1490 | (devip->target * 1000) - 3; | |
23183910 DG |
1491 | /* set DPOFUA bit for disks */ |
1492 | if (0 == scsi_debug_ptype) | |
1493 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; | |
1494 | else | |
1495 | dev_spec = 0x0; | |
1da177e4 LT |
1496 | if (msense_6) { |
1497 | arr[2] = dev_spec; | |
23183910 | 1498 | arr[3] = bd_len; |
1da177e4 LT |
1499 | offset = 4; |
1500 | } else { | |
1501 | arr[3] = dev_spec; | |
23183910 DG |
1502 | if (16 == bd_len) |
1503 | arr[4] = 0x1; /* set LONGLBA bit */ | |
1504 | arr[7] = bd_len; /* assume 255 or less */ | |
1da177e4 LT |
1505 | offset = 8; |
1506 | } | |
1507 | ap = arr + offset; | |
23183910 DG |
1508 | if ((bd_len > 0) && (0 == sdebug_capacity)) { |
1509 | if (scsi_debug_virtual_gb > 0) { | |
1510 | sdebug_capacity = 2048 * 1024; | |
1511 | sdebug_capacity *= scsi_debug_virtual_gb; | |
1512 | } else | |
1513 | sdebug_capacity = sdebug_store_sectors; | |
1514 | } | |
1515 | if (8 == bd_len) { | |
1516 | if (sdebug_capacity > 0xfffffffe) { | |
1517 | ap[0] = 0xff; | |
1518 | ap[1] = 0xff; | |
1519 | ap[2] = 0xff; | |
1520 | ap[3] = 0xff; | |
1521 | } else { | |
1522 | ap[0] = (sdebug_capacity >> 24) & 0xff; | |
1523 | ap[1] = (sdebug_capacity >> 16) & 0xff; | |
1524 | ap[2] = (sdebug_capacity >> 8) & 0xff; | |
1525 | ap[3] = sdebug_capacity & 0xff; | |
1526 | } | |
1527 | ap[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; | |
1528 | ap[7] = SECT_SIZE_PER(target) & 0xff; | |
1529 | offset += bd_len; | |
1530 | ap = arr + offset; | |
1531 | } else if (16 == bd_len) { | |
1532 | unsigned long long capac = sdebug_capacity; | |
1533 | ||
1534 | for (k = 0; k < 8; ++k, capac >>= 8) | |
1535 | ap[7 - k] = capac & 0xff; | |
1536 | ap[12] = (SECT_SIZE_PER(target) >> 24) & 0xff; | |
1537 | ap[13] = (SECT_SIZE_PER(target) >> 16) & 0xff; | |
1538 | ap[14] = (SECT_SIZE_PER(target) >> 8) & 0xff; | |
1539 | ap[15] = SECT_SIZE_PER(target) & 0xff; | |
1540 | offset += bd_len; | |
1541 | ap = arr + offset; | |
1542 | } | |
1da177e4 | 1543 | |
c65b1445 DG |
1544 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
1545 | /* TODO: Control Extension page */ | |
1da177e4 LT |
1546 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1547 | 0); | |
1548 | return check_condition_result; | |
1549 | } | |
1550 | switch (pcode) { | |
1551 | case 0x1: /* Read-Write error recovery page, direct access */ | |
1552 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1553 | offset += len; | |
1554 | break; | |
1555 | case 0x2: /* Disconnect-Reconnect page, all devices */ | |
1556 | len = resp_disconnect_pg(ap, pcontrol, target); | |
1557 | offset += len; | |
1558 | break; | |
1559 | case 0x3: /* Format device page, direct access */ | |
1560 | len = resp_format_pg(ap, pcontrol, target); | |
1561 | offset += len; | |
1562 | break; | |
1563 | case 0x8: /* Caching page, direct access */ | |
1564 | len = resp_caching_pg(ap, pcontrol, target); | |
1565 | offset += len; | |
1566 | break; | |
1567 | case 0xa: /* Control Mode page, all devices */ | |
1568 | len = resp_ctrl_m_pg(ap, pcontrol, target); | |
1569 | offset += len; | |
1570 | break; | |
c65b1445 DG |
1571 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
1572 | if ((subpcode > 0x2) && (subpcode < 0xff)) { | |
1573 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1574 | INVALID_FIELD_IN_CDB, 0); | |
1575 | return check_condition_result; | |
1576 | } | |
1577 | len = 0; | |
1578 | if ((0x0 == subpcode) || (0xff == subpcode)) | |
1579 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1580 | if ((0x1 == subpcode) || (0xff == subpcode)) | |
1581 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, | |
1582 | target_dev_id); | |
1583 | if ((0x2 == subpcode) || (0xff == subpcode)) | |
1584 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1585 | offset += len; | |
1586 | break; | |
1da177e4 LT |
1587 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
1588 | len = resp_iec_m_pg(ap, pcontrol, target); | |
1589 | offset += len; | |
1590 | break; | |
1591 | case 0x3f: /* Read all Mode pages */ | |
c65b1445 DG |
1592 | if ((0 == subpcode) || (0xff == subpcode)) { |
1593 | len = resp_err_recov_pg(ap, pcontrol, target); | |
1594 | len += resp_disconnect_pg(ap + len, pcontrol, target); | |
1595 | len += resp_format_pg(ap + len, pcontrol, target); | |
1596 | len += resp_caching_pg(ap + len, pcontrol, target); | |
1597 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); | |
1598 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); | |
1599 | if (0xff == subpcode) { | |
1600 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, | |
1601 | target, target_dev_id); | |
1602 | len += resp_sas_sha_m_spg(ap + len, pcontrol); | |
1603 | } | |
1604 | len += resp_iec_m_pg(ap + len, pcontrol, target); | |
1605 | } else { | |
1606 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1607 | INVALID_FIELD_IN_CDB, 0); | |
1608 | return check_condition_result; | |
1609 | } | |
1da177e4 LT |
1610 | offset += len; |
1611 | break; | |
1612 | default: | |
1613 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1614 | 0); | |
1615 | return check_condition_result; | |
1616 | } | |
1617 | if (msense_6) | |
1618 | arr[0] = offset - 1; | |
1619 | else { | |
1620 | arr[0] = ((offset - 2) >> 8) & 0xff; | |
1621 | arr[1] = (offset - 2) & 0xff; | |
1622 | } | |
1623 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); | |
1624 | } | |
1625 | ||
c65b1445 DG |
1626 | #define SDEBUG_MAX_MSELECT_SZ 512 |
1627 | ||
1628 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, | |
1629 | struct sdebug_dev_info * devip) | |
1630 | { | |
1631 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; | |
1632 | int param_len, res, errsts, mpage; | |
1633 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; | |
1634 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1635 | ||
1636 | if ((errsts = check_readiness(scp, 1, devip))) | |
1637 | return errsts; | |
1638 | memset(arr, 0, sizeof(arr)); | |
1639 | pf = cmd[1] & 0x10; | |
1640 | sp = cmd[1] & 0x1; | |
1641 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); | |
1642 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { | |
1643 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1644 | INVALID_FIELD_IN_CDB, 0); | |
1645 | return check_condition_result; | |
1646 | } | |
1647 | res = fetch_to_dev_buffer(scp, arr, param_len); | |
1648 | if (-1 == res) | |
1649 | return (DID_ERROR << 16); | |
1650 | else if ((res < param_len) && | |
1651 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
1652 | printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " | |
1653 | " IO sent=%d bytes\n", param_len, res); | |
1654 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); | |
1655 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); | |
23183910 | 1656 | if (md_len > 2) { |
c65b1445 DG |
1657 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
1658 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1659 | return check_condition_result; | |
1660 | } | |
1661 | off = bd_len + (mselect6 ? 4 : 8); | |
1662 | mpage = arr[off] & 0x3f; | |
1663 | ps = !!(arr[off] & 0x80); | |
1664 | if (ps) { | |
1665 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1666 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1667 | return check_condition_result; | |
1668 | } | |
1669 | spf = !!(arr[off] & 0x40); | |
1670 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : | |
1671 | (arr[off + 1] + 2); | |
1672 | if ((pg_len + off) > param_len) { | |
1673 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1674 | PARAMETER_LIST_LENGTH_ERR, 0); | |
1675 | return check_condition_result; | |
1676 | } | |
1677 | switch (mpage) { | |
1678 | case 0xa: /* Control Mode page */ | |
1679 | if (ctrl_m_pg[1] == arr[off + 1]) { | |
1680 | memcpy(ctrl_m_pg + 2, arr + off + 2, | |
1681 | sizeof(ctrl_m_pg) - 2); | |
1682 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); | |
1683 | return 0; | |
1684 | } | |
1685 | break; | |
1686 | case 0x1c: /* Informational Exceptions Mode page */ | |
1687 | if (iec_m_pg[1] == arr[off + 1]) { | |
1688 | memcpy(iec_m_pg + 2, arr + off + 2, | |
1689 | sizeof(iec_m_pg) - 2); | |
1690 | return 0; | |
1691 | } | |
1692 | break; | |
1693 | default: | |
1694 | break; | |
1695 | } | |
1696 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1697 | INVALID_FIELD_IN_PARAM_LIST, 0); | |
1698 | return check_condition_result; | |
1699 | } | |
1700 | ||
1701 | static int resp_temp_l_pg(unsigned char * arr) | |
1702 | { | |
1703 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, | |
1704 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, | |
1705 | }; | |
1706 | ||
1707 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); | |
1708 | return sizeof(temp_l_pg); | |
1709 | } | |
1710 | ||
1711 | static int resp_ie_l_pg(unsigned char * arr) | |
1712 | { | |
1713 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, | |
1714 | }; | |
1715 | ||
1716 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); | |
1717 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ | |
1718 | arr[4] = THRESHOLD_EXCEEDED; | |
1719 | arr[5] = 0xff; | |
1720 | } | |
1721 | return sizeof(ie_l_pg); | |
1722 | } | |
1723 | ||
1724 | #define SDEBUG_MAX_LSENSE_SZ 512 | |
1725 | ||
1726 | static int resp_log_sense(struct scsi_cmnd * scp, | |
1727 | struct sdebug_dev_info * devip) | |
1728 | { | |
23183910 | 1729 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n; |
c65b1445 DG |
1730 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
1731 | unsigned char *cmd = (unsigned char *)scp->cmnd; | |
1732 | ||
1733 | if ((errsts = check_readiness(scp, 1, devip))) | |
1734 | return errsts; | |
1735 | memset(arr, 0, sizeof(arr)); | |
1736 | ppc = cmd[1] & 0x2; | |
1737 | sp = cmd[1] & 0x1; | |
1738 | if (ppc || sp) { | |
1739 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1740 | INVALID_FIELD_IN_CDB, 0); | |
1741 | return check_condition_result; | |
1742 | } | |
1743 | pcontrol = (cmd[2] & 0xc0) >> 6; | |
1744 | pcode = cmd[2] & 0x3f; | |
23183910 | 1745 | subpcode = cmd[3] & 0xff; |
c65b1445 DG |
1746 | alloc_len = (cmd[7] << 8) + cmd[8]; |
1747 | arr[0] = pcode; | |
23183910 DG |
1748 | if (0 == subpcode) { |
1749 | switch (pcode) { | |
1750 | case 0x0: /* Supported log pages log page */ | |
1751 | n = 4; | |
1752 | arr[n++] = 0x0; /* this page */ | |
1753 | arr[n++] = 0xd; /* Temperature */ | |
1754 | arr[n++] = 0x2f; /* Informational exceptions */ | |
1755 | arr[3] = n - 4; | |
1756 | break; | |
1757 | case 0xd: /* Temperature log page */ | |
1758 | arr[3] = resp_temp_l_pg(arr + 4); | |
1759 | break; | |
1760 | case 0x2f: /* Informational exceptions log page */ | |
1761 | arr[3] = resp_ie_l_pg(arr + 4); | |
1762 | break; | |
1763 | default: | |
1764 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1765 | INVALID_FIELD_IN_CDB, 0); | |
1766 | return check_condition_result; | |
1767 | } | |
1768 | } else if (0xff == subpcode) { | |
1769 | arr[0] |= 0x40; | |
1770 | arr[1] = subpcode; | |
1771 | switch (pcode) { | |
1772 | case 0x0: /* Supported log pages and subpages log page */ | |
1773 | n = 4; | |
1774 | arr[n++] = 0x0; | |
1775 | arr[n++] = 0x0; /* 0,0 page */ | |
1776 | arr[n++] = 0x0; | |
1777 | arr[n++] = 0xff; /* this page */ | |
1778 | arr[n++] = 0xd; | |
1779 | arr[n++] = 0x0; /* Temperature */ | |
1780 | arr[n++] = 0x2f; | |
1781 | arr[n++] = 0x0; /* Informational exceptions */ | |
1782 | arr[3] = n - 4; | |
1783 | break; | |
1784 | case 0xd: /* Temperature subpages */ | |
1785 | n = 4; | |
1786 | arr[n++] = 0xd; | |
1787 | arr[n++] = 0x0; /* Temperature */ | |
1788 | arr[3] = n - 4; | |
1789 | break; | |
1790 | case 0x2f: /* Informational exceptions subpages */ | |
1791 | n = 4; | |
1792 | arr[n++] = 0x2f; | |
1793 | arr[n++] = 0x0; /* Informational exceptions */ | |
1794 | arr[3] = n - 4; | |
1795 | break; | |
1796 | default: | |
1797 | mk_sense_buffer(devip, ILLEGAL_REQUEST, | |
1798 | INVALID_FIELD_IN_CDB, 0); | |
1799 | return check_condition_result; | |
1800 | } | |
1801 | } else { | |
c65b1445 DG |
1802 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
1803 | INVALID_FIELD_IN_CDB, 0); | |
1804 | return check_condition_result; | |
1805 | } | |
1806 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); | |
1807 | return fill_from_dev_buffer(scp, arr, | |
1808 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); | |
1809 | } | |
1810 | ||
1811 | static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, | |
1812 | unsigned int num, struct sdebug_dev_info * devip) | |
1da177e4 LT |
1813 | { |
1814 | unsigned long iflags; | |
c65b1445 DG |
1815 | unsigned int block, from_bottom; |
1816 | unsigned long long u; | |
1da177e4 LT |
1817 | int ret; |
1818 | ||
c65b1445 | 1819 | if (lba + num > sdebug_capacity) { |
1da177e4 LT |
1820 | mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, |
1821 | 0); | |
1822 | return check_condition_result; | |
1823 | } | |
c65b1445 DG |
1824 | /* transfer length excessive (tie in to block limits VPD page) */ |
1825 | if (num > sdebug_store_sectors) { | |
1826 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1827 | 0); | |
1828 | return check_condition_result; | |
1829 | } | |
1da177e4 | 1830 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
c65b1445 DG |
1831 | (lba <= OPT_MEDIUM_ERR_ADDR) && |
1832 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { | |
1833 | /* claim unrecoverable read error */ | |
1da177e4 LT |
1834 | mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, |
1835 | 0); | |
c65b1445 DG |
1836 | /* set info field and valid bit for fixed descriptor */ |
1837 | if (0x70 == (devip->sense_buff[0] & 0x7f)) { | |
1838 | devip->sense_buff[0] |= 0x80; /* Valid bit */ | |
1839 | ret = OPT_MEDIUM_ERR_ADDR; | |
1840 | devip->sense_buff[3] = (ret >> 24) & 0xff; | |
1841 | devip->sense_buff[4] = (ret >> 16) & 0xff; | |
1842 | devip->sense_buff[5] = (ret >> 8) & 0xff; | |
1843 | devip->sense_buff[6] = ret & 0xff; | |
1844 | } | |
1da177e4 LT |
1845 | return check_condition_result; |
1846 | } | |
1847 | read_lock_irqsave(&atomic_rw, iflags); | |
c65b1445 DG |
1848 | if ((lba + num) <= sdebug_store_sectors) |
1849 | ret = fill_from_dev_buffer(SCpnt, | |
1850 | fake_storep + (lba * SECT_SIZE), | |
1851 | num * SECT_SIZE); | |
1852 | else { | |
1853 | /* modulo when one arg is 64 bits needs do_div() */ | |
1854 | u = lba; | |
1855 | block = do_div(u, sdebug_store_sectors); | |
1856 | from_bottom = 0; | |
1857 | if ((block + num) > sdebug_store_sectors) | |
1858 | from_bottom = (block + num) - sdebug_store_sectors; | |
1859 | ret = fill_from_dev_buffer(SCpnt, | |
1860 | fake_storep + (block * SECT_SIZE), | |
1861 | (num - from_bottom) * SECT_SIZE); | |
1862 | if ((0 == ret) && (from_bottom > 0)) | |
1863 | ret = fill_from_dev_buffer(SCpnt, fake_storep, | |
1864 | from_bottom * SECT_SIZE); | |
1865 | } | |
1da177e4 LT |
1866 | read_unlock_irqrestore(&atomic_rw, iflags); |
1867 | return ret; | |
1868 | } | |
1869 | ||
c65b1445 DG |
1870 | static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, |
1871 | unsigned int num, struct sdebug_dev_info * devip) | |
1da177e4 LT |
1872 | { |
1873 | unsigned long iflags; | |
c65b1445 DG |
1874 | unsigned int block, to_bottom; |
1875 | unsigned long long u; | |
1da177e4 LT |
1876 | int res; |
1877 | ||
c65b1445 | 1878 | if (lba + num > sdebug_capacity) { |
1da177e4 LT |
1879 | mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, |
1880 | 0); | |
1881 | return check_condition_result; | |
1882 | } | |
c65b1445 DG |
1883 | /* transfer length excessive (tie in to block limits VPD page) */ |
1884 | if (num > sdebug_store_sectors) { | |
1885 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, | |
1886 | 0); | |
1887 | return check_condition_result; | |
1888 | } | |
1da177e4 LT |
1889 | |
1890 | write_lock_irqsave(&atomic_rw, iflags); | |
c65b1445 DG |
1891 | if ((lba + num) <= sdebug_store_sectors) |
1892 | res = fetch_to_dev_buffer(SCpnt, | |
1893 | fake_storep + (lba * SECT_SIZE), | |
1894 | num * SECT_SIZE); | |
1895 | else { | |
1896 | /* modulo when one arg is 64 bits needs do_div() */ | |
1897 | u = lba; | |
1898 | block = do_div(u, sdebug_store_sectors); | |
1899 | to_bottom = 0; | |
1900 | if ((block + num) > sdebug_store_sectors) | |
1901 | to_bottom = (block + num) - sdebug_store_sectors; | |
1902 | res = fetch_to_dev_buffer(SCpnt, | |
1903 | fake_storep + (block * SECT_SIZE), | |
1904 | (num - to_bottom) * SECT_SIZE); | |
1905 | if ((0 == res) && (to_bottom > 0)) | |
1906 | res = fetch_to_dev_buffer(SCpnt, fake_storep, | |
1907 | to_bottom * SECT_SIZE); | |
1908 | } | |
1da177e4 LT |
1909 | write_unlock_irqrestore(&atomic_rw, iflags); |
1910 | if (-1 == res) | |
1911 | return (DID_ERROR << 16); | |
1912 | else if ((res < (num * SECT_SIZE)) && | |
1913 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) | |
c65b1445 | 1914 | printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " |
1da177e4 LT |
1915 | " IO sent=%d bytes\n", num * SECT_SIZE, res); |
1916 | return 0; | |
1917 | } | |
1918 | ||
c65b1445 | 1919 | #define SDEBUG_RLUN_ARR_SZ 256 |
1da177e4 LT |
1920 | |
1921 | static int resp_report_luns(struct scsi_cmnd * scp, | |
1922 | struct sdebug_dev_info * devip) | |
1923 | { | |
1924 | unsigned int alloc_len; | |
c65b1445 | 1925 | int lun_cnt, i, upper, num, n, wlun, lun; |
1da177e4 LT |
1926 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
1927 | int select_report = (int)cmd[2]; | |
1928 | struct scsi_lun *one_lun; | |
1929 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; | |
c65b1445 | 1930 | unsigned char * max_addr; |
1da177e4 LT |
1931 | |
1932 | alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); | |
c65b1445 | 1933 | if ((alloc_len < 4) || (select_report > 2)) { |
1da177e4 LT |
1934 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
1935 | 0); | |
1936 | return check_condition_result; | |
1937 | } | |
1938 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ | |
1939 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); | |
1940 | lun_cnt = scsi_debug_max_luns; | |
c65b1445 DG |
1941 | if (1 == select_report) |
1942 | lun_cnt = 0; | |
1943 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) | |
1944 | --lun_cnt; | |
1945 | wlun = (select_report > 0) ? 1 : 0; | |
1946 | num = lun_cnt + wlun; | |
1947 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; | |
1948 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; | |
1949 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / | |
1950 | sizeof(struct scsi_lun)), num); | |
1951 | if (n < num) { | |
1952 | wlun = 0; | |
1953 | lun_cnt = n; | |
1954 | } | |
1da177e4 | 1955 | one_lun = (struct scsi_lun *) &arr[8]; |
c65b1445 DG |
1956 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
1957 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); | |
1958 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); | |
1959 | i++, lun++) { | |
1960 | upper = (lun >> 8) & 0x3f; | |
1da177e4 LT |
1961 | if (upper) |
1962 | one_lun[i].scsi_lun[0] = | |
1963 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); | |
c65b1445 DG |
1964 | one_lun[i].scsi_lun[1] = lun & 0xff; |
1965 | } | |
1966 | if (wlun) { | |
1967 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; | |
1968 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; | |
1969 | i++; | |
1da177e4 | 1970 | } |
c65b1445 | 1971 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
1da177e4 LT |
1972 | return fill_from_dev_buffer(scp, arr, |
1973 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); | |
1974 | } | |
1975 | ||
c639d14e FT |
1976 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
1977 | unsigned int num, struct sdebug_dev_info *devip) | |
1978 | { | |
1979 | int i, j, ret = -1; | |
1980 | unsigned char *kaddr, *buf; | |
1981 | unsigned int offset; | |
1982 | struct scatterlist *sg; | |
1983 | struct scsi_data_buffer *sdb = scsi_in(scp); | |
1984 | ||
1985 | /* better not to use temporary buffer. */ | |
1986 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); | |
1987 | if (!buf) | |
1988 | return ret; | |
1989 | ||
1990 | offset = 0; | |
1991 | scsi_for_each_sg(scp, sg, scsi_sg_count(scp), i) { | |
1992 | kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); | |
1993 | if (!kaddr) | |
1994 | goto out; | |
1995 | ||
1996 | memcpy(buf + offset, kaddr + sg->offset, sg->length); | |
1997 | offset += sg->length; | |
1998 | kunmap_atomic(kaddr, KM_USER0); | |
1999 | } | |
2000 | ||
2001 | offset = 0; | |
2002 | for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) { | |
2003 | kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); | |
2004 | if (!kaddr) | |
2005 | goto out; | |
2006 | ||
2007 | for (j = 0; j < sg->length; j++) | |
2008 | *(kaddr + sg->offset + j) ^= *(buf + offset + j); | |
2009 | ||
2010 | offset += sg->length; | |
2011 | kunmap_atomic(kaddr, KM_USER0); | |
2012 | } | |
2013 | ret = 0; | |
2014 | out: | |
2015 | kfree(buf); | |
2016 | ||
2017 | return ret; | |
2018 | } | |
2019 | ||
1da177e4 LT |
2020 | /* When timer goes off this function is called. */ |
2021 | static void timer_intr_handler(unsigned long indx) | |
2022 | { | |
2023 | struct sdebug_queued_cmd * sqcp; | |
2024 | unsigned long iflags; | |
2025 | ||
2026 | if (indx >= SCSI_DEBUG_CANQUEUE) { | |
2027 | printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " | |
2028 | "large\n"); | |
2029 | return; | |
2030 | } | |
2031 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2032 | sqcp = &queued_arr[(int)indx]; | |
2033 | if (! sqcp->in_use) { | |
2034 | printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected " | |
2035 | "interrupt\n"); | |
2036 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2037 | return; | |
2038 | } | |
2039 | sqcp->in_use = 0; | |
2040 | if (sqcp->done_funct) { | |
2041 | sqcp->a_cmnd->result = sqcp->scsi_result; | |
2042 | sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */ | |
2043 | } | |
2044 | sqcp->done_funct = NULL; | |
2045 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2046 | } | |
2047 | ||
2048 | static int scsi_debug_slave_alloc(struct scsi_device * sdp) | |
2049 | { | |
2050 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
c65b1445 DG |
2051 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", |
2052 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
c639d14e | 2053 | set_bit(QUEUE_FLAG_BIDI, &sdp->request_queue->queue_flags); |
1da177e4 LT |
2054 | return 0; |
2055 | } | |
2056 | ||
2057 | static int scsi_debug_slave_configure(struct scsi_device * sdp) | |
2058 | { | |
2059 | struct sdebug_dev_info * devip; | |
2060 | ||
2061 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
c65b1445 DG |
2062 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", |
2063 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
1da177e4 LT |
2064 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) |
2065 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; | |
2066 | devip = devInfoReg(sdp); | |
6f3cbf55 DG |
2067 | if (NULL == devip) |
2068 | return 1; /* no resources, will be marked offline */ | |
1da177e4 LT |
2069 | sdp->hostdata = devip; |
2070 | if (sdp->host->cmd_per_lun) | |
2071 | scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, | |
2072 | sdp->host->cmd_per_lun); | |
c65b1445 | 2073 | blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); |
1da177e4 LT |
2074 | return 0; |
2075 | } | |
2076 | ||
2077 | static void scsi_debug_slave_destroy(struct scsi_device * sdp) | |
2078 | { | |
2079 | struct sdebug_dev_info * devip = | |
2080 | (struct sdebug_dev_info *)sdp->hostdata; | |
2081 | ||
2082 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
c65b1445 DG |
2083 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", |
2084 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); | |
1da177e4 LT |
2085 | if (devip) { |
2086 | /* make this slot avaliable for re-use */ | |
2087 | devip->used = 0; | |
2088 | sdp->hostdata = NULL; | |
2089 | } | |
2090 | } | |
2091 | ||
2092 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) | |
2093 | { | |
2094 | struct sdebug_host_info * sdbg_host; | |
2095 | struct sdebug_dev_info * open_devip = NULL; | |
2096 | struct sdebug_dev_info * devip = | |
2097 | (struct sdebug_dev_info *)sdev->hostdata; | |
2098 | ||
2099 | if (devip) | |
2100 | return devip; | |
2101 | sdbg_host = *(struct sdebug_host_info **) sdev->host->hostdata; | |
2102 | if(! sdbg_host) { | |
2103 | printk(KERN_ERR "Host info NULL\n"); | |
2104 | return NULL; | |
2105 | } | |
2106 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { | |
2107 | if ((devip->used) && (devip->channel == sdev->channel) && | |
2108 | (devip->target == sdev->id) && | |
2109 | (devip->lun == sdev->lun)) | |
2110 | return devip; | |
2111 | else { | |
2112 | if ((!devip->used) && (!open_devip)) | |
2113 | open_devip = devip; | |
2114 | } | |
2115 | } | |
2116 | if (NULL == open_devip) { /* try and make a new one */ | |
6f3cbf55 | 2117 | open_devip = kzalloc(sizeof(*open_devip),GFP_ATOMIC); |
1da177e4 LT |
2118 | if (NULL == open_devip) { |
2119 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
2120 | __FUNCTION__, __LINE__); | |
2121 | return NULL; | |
2122 | } | |
1da177e4 LT |
2123 | open_devip->sdbg_host = sdbg_host; |
2124 | list_add_tail(&open_devip->dev_list, | |
2125 | &sdbg_host->dev_info_list); | |
2126 | } | |
2127 | if (open_devip) { | |
2128 | open_devip->channel = sdev->channel; | |
2129 | open_devip->target = sdev->id; | |
2130 | open_devip->lun = sdev->lun; | |
2131 | open_devip->sdbg_host = sdbg_host; | |
2132 | open_devip->reset = 1; | |
2133 | open_devip->used = 1; | |
2134 | memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); | |
2135 | if (scsi_debug_dsense) | |
2136 | open_devip->sense_buff[0] = 0x72; | |
2137 | else { | |
2138 | open_devip->sense_buff[0] = 0x70; | |
2139 | open_devip->sense_buff[7] = 0xa; | |
2140 | } | |
c65b1445 DG |
2141 | if (sdev->lun == SAM2_WLUN_REPORT_LUNS) |
2142 | open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; | |
1da177e4 LT |
2143 | return open_devip; |
2144 | } | |
2145 | return NULL; | |
2146 | } | |
2147 | ||
2148 | static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, | |
2149 | int asc, int asq) | |
2150 | { | |
2151 | unsigned char * sbuff; | |
2152 | ||
2153 | sbuff = devip->sense_buff; | |
2154 | memset(sbuff, 0, SDEBUG_SENSE_LEN); | |
2155 | if (scsi_debug_dsense) { | |
2156 | sbuff[0] = 0x72; /* descriptor, current */ | |
2157 | sbuff[1] = key; | |
2158 | sbuff[2] = asc; | |
2159 | sbuff[3] = asq; | |
2160 | } else { | |
2161 | sbuff[0] = 0x70; /* fixed, current */ | |
2162 | sbuff[2] = key; | |
2163 | sbuff[7] = 0xa; /* implies 18 byte sense buffer */ | |
2164 | sbuff[12] = asc; | |
2165 | sbuff[13] = asq; | |
2166 | } | |
2167 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2168 | printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " | |
2169 | "[0x%x,0x%x,0x%x]\n", key, asc, asq); | |
2170 | } | |
2171 | ||
2172 | static int scsi_debug_abort(struct scsi_cmnd * SCpnt) | |
2173 | { | |
2174 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2175 | printk(KERN_INFO "scsi_debug: abort\n"); | |
2176 | ++num_aborts; | |
2177 | stop_queued_cmnd(SCpnt); | |
2178 | return SUCCESS; | |
2179 | } | |
2180 | ||
2181 | static int scsi_debug_biosparam(struct scsi_device *sdev, | |
2182 | struct block_device * bdev, sector_t capacity, int *info) | |
2183 | { | |
2184 | int res; | |
2185 | unsigned char *buf; | |
2186 | ||
2187 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2188 | printk(KERN_INFO "scsi_debug: biosparam\n"); | |
2189 | buf = scsi_bios_ptable(bdev); | |
2190 | if (buf) { | |
2191 | res = scsi_partsize(buf, capacity, | |
2192 | &info[2], &info[0], &info[1]); | |
2193 | kfree(buf); | |
2194 | if (! res) | |
2195 | return res; | |
2196 | } | |
2197 | info[0] = sdebug_heads; | |
2198 | info[1] = sdebug_sectors_per; | |
2199 | info[2] = sdebug_cylinders_per; | |
2200 | return 0; | |
2201 | } | |
2202 | ||
2203 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) | |
2204 | { | |
2205 | struct sdebug_dev_info * devip; | |
2206 | ||
2207 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2208 | printk(KERN_INFO "scsi_debug: device_reset\n"); | |
2209 | ++num_dev_resets; | |
2210 | if (SCpnt) { | |
2211 | devip = devInfoReg(SCpnt->device); | |
2212 | if (devip) | |
2213 | devip->reset = 1; | |
2214 | } | |
2215 | return SUCCESS; | |
2216 | } | |
2217 | ||
2218 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) | |
2219 | { | |
2220 | struct sdebug_host_info *sdbg_host; | |
2221 | struct sdebug_dev_info * dev_info; | |
2222 | struct scsi_device * sdp; | |
2223 | struct Scsi_Host * hp; | |
2224 | ||
2225 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2226 | printk(KERN_INFO "scsi_debug: bus_reset\n"); | |
2227 | ++num_bus_resets; | |
2228 | if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { | |
2229 | sdbg_host = *(struct sdebug_host_info **) hp->hostdata; | |
2230 | if (sdbg_host) { | |
2231 | list_for_each_entry(dev_info, | |
2232 | &sdbg_host->dev_info_list, | |
2233 | dev_list) | |
2234 | dev_info->reset = 1; | |
2235 | } | |
2236 | } | |
2237 | return SUCCESS; | |
2238 | } | |
2239 | ||
2240 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) | |
2241 | { | |
2242 | struct sdebug_host_info * sdbg_host; | |
2243 | struct sdebug_dev_info * dev_info; | |
2244 | ||
2245 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2246 | printk(KERN_INFO "scsi_debug: host_reset\n"); | |
2247 | ++num_host_resets; | |
2248 | spin_lock(&sdebug_host_list_lock); | |
2249 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
2250 | list_for_each_entry(dev_info, &sdbg_host->dev_info_list, | |
2251 | dev_list) | |
2252 | dev_info->reset = 1; | |
2253 | } | |
2254 | spin_unlock(&sdebug_host_list_lock); | |
2255 | stop_all_queued(); | |
2256 | return SUCCESS; | |
2257 | } | |
2258 | ||
2259 | /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ | |
2260 | static int stop_queued_cmnd(struct scsi_cmnd * cmnd) | |
2261 | { | |
2262 | unsigned long iflags; | |
2263 | int k; | |
2264 | struct sdebug_queued_cmd * sqcp; | |
2265 | ||
2266 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2267 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2268 | sqcp = &queued_arr[k]; | |
2269 | if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { | |
2270 | del_timer_sync(&sqcp->cmnd_timer); | |
2271 | sqcp->in_use = 0; | |
2272 | sqcp->a_cmnd = NULL; | |
2273 | break; | |
2274 | } | |
2275 | } | |
2276 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2277 | return (k < SCSI_DEBUG_CANQUEUE) ? 1 : 0; | |
2278 | } | |
2279 | ||
2280 | /* Deletes (stops) timers of all queued commands */ | |
2281 | static void stop_all_queued(void) | |
2282 | { | |
2283 | unsigned long iflags; | |
2284 | int k; | |
2285 | struct sdebug_queued_cmd * sqcp; | |
2286 | ||
2287 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2288 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2289 | sqcp = &queued_arr[k]; | |
2290 | if (sqcp->in_use && sqcp->a_cmnd) { | |
2291 | del_timer_sync(&sqcp->cmnd_timer); | |
2292 | sqcp->in_use = 0; | |
2293 | sqcp->a_cmnd = NULL; | |
2294 | } | |
2295 | } | |
2296 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2297 | } | |
2298 | ||
2299 | /* Initializes timers in queued array */ | |
2300 | static void __init init_all_queued(void) | |
2301 | { | |
2302 | unsigned long iflags; | |
2303 | int k; | |
2304 | struct sdebug_queued_cmd * sqcp; | |
2305 | ||
2306 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2307 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2308 | sqcp = &queued_arr[k]; | |
2309 | init_timer(&sqcp->cmnd_timer); | |
2310 | sqcp->in_use = 0; | |
2311 | sqcp->a_cmnd = NULL; | |
2312 | } | |
2313 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2314 | } | |
2315 | ||
2316 | static void __init sdebug_build_parts(unsigned char * ramp) | |
2317 | { | |
2318 | struct partition * pp; | |
2319 | int starts[SDEBUG_MAX_PARTS + 2]; | |
2320 | int sectors_per_part, num_sectors, k; | |
2321 | int heads_by_sects, start_sec, end_sec; | |
2322 | ||
2323 | /* assume partition table already zeroed */ | |
2324 | if ((scsi_debug_num_parts < 1) || (sdebug_store_size < 1048576)) | |
2325 | return; | |
2326 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { | |
2327 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; | |
2328 | printk(KERN_WARNING "scsi_debug:build_parts: reducing " | |
2329 | "partitions to %d\n", SDEBUG_MAX_PARTS); | |
2330 | } | |
c65b1445 | 2331 | num_sectors = (int)sdebug_store_sectors; |
1da177e4 LT |
2332 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
2333 | / scsi_debug_num_parts; | |
2334 | heads_by_sects = sdebug_heads * sdebug_sectors_per; | |
2335 | starts[0] = sdebug_sectors_per; | |
2336 | for (k = 1; k < scsi_debug_num_parts; ++k) | |
2337 | starts[k] = ((k * sectors_per_part) / heads_by_sects) | |
2338 | * heads_by_sects; | |
2339 | starts[scsi_debug_num_parts] = num_sectors; | |
2340 | starts[scsi_debug_num_parts + 1] = 0; | |
2341 | ||
2342 | ramp[510] = 0x55; /* magic partition markings */ | |
2343 | ramp[511] = 0xAA; | |
2344 | pp = (struct partition *)(ramp + 0x1be); | |
2345 | for (k = 0; starts[k + 1]; ++k, ++pp) { | |
2346 | start_sec = starts[k]; | |
2347 | end_sec = starts[k + 1] - 1; | |
2348 | pp->boot_ind = 0; | |
2349 | ||
2350 | pp->cyl = start_sec / heads_by_sects; | |
2351 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) | |
2352 | / sdebug_sectors_per; | |
2353 | pp->sector = (start_sec % sdebug_sectors_per) + 1; | |
2354 | ||
2355 | pp->end_cyl = end_sec / heads_by_sects; | |
2356 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) | |
2357 | / sdebug_sectors_per; | |
2358 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; | |
2359 | ||
2360 | pp->start_sect = start_sec; | |
2361 | pp->nr_sects = end_sec - start_sec + 1; | |
2362 | pp->sys_ind = 0x83; /* plain Linux partition */ | |
2363 | } | |
2364 | } | |
2365 | ||
2366 | static int schedule_resp(struct scsi_cmnd * cmnd, | |
2367 | struct sdebug_dev_info * devip, | |
2368 | done_funct_t done, int scsi_result, int delta_jiff) | |
2369 | { | |
2370 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) { | |
2371 | if (scsi_result) { | |
2372 | struct scsi_device * sdp = cmnd->device; | |
2373 | ||
c65b1445 DG |
2374 | printk(KERN_INFO "scsi_debug: <%u %u %u %u> " |
2375 | "non-zero result=0x%x\n", sdp->host->host_no, | |
2376 | sdp->channel, sdp->id, sdp->lun, scsi_result); | |
1da177e4 LT |
2377 | } |
2378 | } | |
2379 | if (cmnd && devip) { | |
2380 | /* simulate autosense by this driver */ | |
2381 | if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff)) | |
2382 | memcpy(cmnd->sense_buffer, devip->sense_buff, | |
2383 | (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ? | |
2384 | SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE); | |
2385 | } | |
2386 | if (delta_jiff <= 0) { | |
2387 | if (cmnd) | |
2388 | cmnd->result = scsi_result; | |
2389 | if (done) | |
2390 | done(cmnd); | |
2391 | return 0; | |
2392 | } else { | |
2393 | unsigned long iflags; | |
2394 | int k; | |
2395 | struct sdebug_queued_cmd * sqcp = NULL; | |
2396 | ||
2397 | spin_lock_irqsave(&queued_arr_lock, iflags); | |
2398 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { | |
2399 | sqcp = &queued_arr[k]; | |
2400 | if (! sqcp->in_use) | |
2401 | break; | |
2402 | } | |
2403 | if (k >= SCSI_DEBUG_CANQUEUE) { | |
2404 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2405 | printk(KERN_WARNING "scsi_debug: can_queue exceeded\n"); | |
2406 | return 1; /* report busy to mid level */ | |
2407 | } | |
2408 | sqcp->in_use = 1; | |
2409 | sqcp->a_cmnd = cmnd; | |
2410 | sqcp->scsi_result = scsi_result; | |
2411 | sqcp->done_funct = done; | |
2412 | sqcp->cmnd_timer.function = timer_intr_handler; | |
2413 | sqcp->cmnd_timer.data = k; | |
2414 | sqcp->cmnd_timer.expires = jiffies + delta_jiff; | |
2415 | add_timer(&sqcp->cmnd_timer); | |
2416 | spin_unlock_irqrestore(&queued_arr_lock, iflags); | |
2417 | if (cmnd) | |
2418 | cmnd->result = 0; | |
2419 | return 0; | |
2420 | } | |
2421 | } | |
2422 | ||
23183910 DG |
2423 | /* Note: The following macros create attribute files in the |
2424 | /sys/module/scsi_debug/parameters directory. Unfortunately this | |
2425 | driver is unaware of a change and cannot trigger auxiliary actions | |
2426 | as it can when the corresponding attribute in the | |
2427 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. | |
2428 | */ | |
c65b1445 DG |
2429 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
2430 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); | |
2431 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); | |
2432 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); | |
2433 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); | |
23183910 | 2434 | module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); |
c65b1445 DG |
2435 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
2436 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); | |
2437 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); | |
2438 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); | |
2439 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); | |
2440 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); | |
2441 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); | |
2442 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); | |
23183910 DG |
2443 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, |
2444 | S_IRUGO | S_IWUSR); | |
1da177e4 LT |
2445 | |
2446 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); | |
2447 | MODULE_DESCRIPTION("SCSI debug adapter driver"); | |
2448 | MODULE_LICENSE("GPL"); | |
2449 | MODULE_VERSION(SCSI_DEBUG_VERSION); | |
2450 | ||
2451 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); | |
2452 | MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); | |
c65b1445 DG |
2453 | MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); |
2454 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); | |
beb87c33 | 2455 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
23183910 | 2456 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
c65b1445 DG |
2457 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
2458 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); | |
1da177e4 | 2459 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
c65b1445 | 2460 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
6f3cbf55 | 2461 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
1da177e4 LT |
2462 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
2463 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])"); | |
c65b1445 | 2464 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); |
23183910 | 2465 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
1da177e4 LT |
2466 | |
2467 | ||
2468 | static char sdebug_info[256]; | |
2469 | ||
2470 | static const char * scsi_debug_info(struct Scsi_Host * shp) | |
2471 | { | |
2472 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " | |
2473 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, | |
2474 | scsi_debug_version_date, scsi_debug_dev_size_mb, | |
2475 | scsi_debug_opts); | |
2476 | return sdebug_info; | |
2477 | } | |
2478 | ||
2479 | /* scsi_debug_proc_info | |
2480 | * Used if the driver currently has no own support for /proc/scsi | |
2481 | */ | |
2482 | static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset, | |
2483 | int length, int inout) | |
2484 | { | |
2485 | int len, pos, begin; | |
2486 | int orig_length; | |
2487 | ||
2488 | orig_length = length; | |
2489 | ||
2490 | if (inout == 1) { | |
2491 | char arr[16]; | |
2492 | int minLen = length > 15 ? 15 : length; | |
2493 | ||
2494 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
2495 | return -EACCES; | |
2496 | memcpy(arr, buffer, minLen); | |
2497 | arr[minLen] = '\0'; | |
2498 | if (1 != sscanf(arr, "%d", &pos)) | |
2499 | return -EINVAL; | |
2500 | scsi_debug_opts = pos; | |
2501 | if (scsi_debug_every_nth != 0) | |
2502 | scsi_debug_cmnd_count = 0; | |
2503 | return length; | |
2504 | } | |
2505 | begin = 0; | |
2506 | pos = len = sprintf(buffer, "scsi_debug adapter driver, version " | |
2507 | "%s [%s]\n" | |
2508 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " | |
2509 | "every_nth=%d(curr:%d)\n" | |
2510 | "delay=%d, max_luns=%d, scsi_level=%d\n" | |
2511 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" | |
2512 | "number of aborts=%d, device_reset=%d, bus_resets=%d, " | |
2513 | "host_resets=%d\n", | |
2514 | SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, | |
2515 | scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, | |
2516 | scsi_debug_cmnd_count, scsi_debug_delay, | |
2517 | scsi_debug_max_luns, scsi_debug_scsi_level, | |
2518 | SECT_SIZE, sdebug_cylinders_per, sdebug_heads, sdebug_sectors_per, | |
2519 | num_aborts, num_dev_resets, num_bus_resets, num_host_resets); | |
2520 | if (pos < offset) { | |
2521 | len = 0; | |
2522 | begin = pos; | |
2523 | } | |
2524 | *start = buffer + (offset - begin); /* Start of wanted data */ | |
2525 | len -= (offset - begin); | |
2526 | if (len > length) | |
2527 | len = length; | |
2528 | return len; | |
2529 | } | |
2530 | ||
2531 | static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf) | |
2532 | { | |
2533 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); | |
2534 | } | |
2535 | ||
2536 | static ssize_t sdebug_delay_store(struct device_driver * ddp, | |
2537 | const char * buf, size_t count) | |
2538 | { | |
2539 | int delay; | |
2540 | char work[20]; | |
2541 | ||
2542 | if (1 == sscanf(buf, "%10s", work)) { | |
2543 | if ((1 == sscanf(work, "%d", &delay)) && (delay >= 0)) { | |
2544 | scsi_debug_delay = delay; | |
2545 | return count; | |
2546 | } | |
2547 | } | |
2548 | return -EINVAL; | |
2549 | } | |
2550 | DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show, | |
2551 | sdebug_delay_store); | |
2552 | ||
2553 | static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf) | |
2554 | { | |
2555 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); | |
2556 | } | |
2557 | ||
2558 | static ssize_t sdebug_opts_store(struct device_driver * ddp, | |
2559 | const char * buf, size_t count) | |
2560 | { | |
2561 | int opts; | |
2562 | char work[20]; | |
2563 | ||
2564 | if (1 == sscanf(buf, "%10s", work)) { | |
2565 | if (0 == strnicmp(work,"0x", 2)) { | |
2566 | if (1 == sscanf(&work[2], "%x", &opts)) | |
2567 | goto opts_done; | |
2568 | } else { | |
2569 | if (1 == sscanf(work, "%d", &opts)) | |
2570 | goto opts_done; | |
2571 | } | |
2572 | } | |
2573 | return -EINVAL; | |
2574 | opts_done: | |
2575 | scsi_debug_opts = opts; | |
2576 | scsi_debug_cmnd_count = 0; | |
2577 | return count; | |
2578 | } | |
2579 | DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show, | |
2580 | sdebug_opts_store); | |
2581 | ||
2582 | static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf) | |
2583 | { | |
2584 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); | |
2585 | } | |
2586 | static ssize_t sdebug_ptype_store(struct device_driver * ddp, | |
2587 | const char * buf, size_t count) | |
2588 | { | |
2589 | int n; | |
2590 | ||
2591 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2592 | scsi_debug_ptype = n; | |
2593 | return count; | |
2594 | } | |
2595 | return -EINVAL; | |
2596 | } | |
2597 | DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store); | |
2598 | ||
2599 | static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf) | |
2600 | { | |
2601 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); | |
2602 | } | |
2603 | static ssize_t sdebug_dsense_store(struct device_driver * ddp, | |
2604 | const char * buf, size_t count) | |
2605 | { | |
2606 | int n; | |
2607 | ||
2608 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2609 | scsi_debug_dsense = n; | |
2610 | return count; | |
2611 | } | |
2612 | return -EINVAL; | |
2613 | } | |
2614 | DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show, | |
2615 | sdebug_dsense_store); | |
2616 | ||
23183910 DG |
2617 | static ssize_t sdebug_fake_rw_show(struct device_driver * ddp, char * buf) |
2618 | { | |
2619 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); | |
2620 | } | |
2621 | static ssize_t sdebug_fake_rw_store(struct device_driver * ddp, | |
2622 | const char * buf, size_t count) | |
2623 | { | |
2624 | int n; | |
2625 | ||
2626 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2627 | scsi_debug_fake_rw = n; | |
2628 | return count; | |
2629 | } | |
2630 | return -EINVAL; | |
2631 | } | |
2632 | DRIVER_ATTR(fake_rw, S_IRUGO | S_IWUSR, sdebug_fake_rw_show, | |
2633 | sdebug_fake_rw_store); | |
2634 | ||
c65b1445 DG |
2635 | static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf) |
2636 | { | |
2637 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); | |
2638 | } | |
2639 | static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp, | |
2640 | const char * buf, size_t count) | |
2641 | { | |
2642 | int n; | |
2643 | ||
2644 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2645 | scsi_debug_no_lun_0 = n; | |
2646 | return count; | |
2647 | } | |
2648 | return -EINVAL; | |
2649 | } | |
2650 | DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show, | |
2651 | sdebug_no_lun_0_store); | |
2652 | ||
1da177e4 LT |
2653 | static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf) |
2654 | { | |
2655 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); | |
2656 | } | |
2657 | static ssize_t sdebug_num_tgts_store(struct device_driver * ddp, | |
2658 | const char * buf, size_t count) | |
2659 | { | |
2660 | int n; | |
2661 | ||
2662 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2663 | scsi_debug_num_tgts = n; | |
2664 | sdebug_max_tgts_luns(); | |
2665 | return count; | |
2666 | } | |
2667 | return -EINVAL; | |
2668 | } | |
2669 | DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show, | |
2670 | sdebug_num_tgts_store); | |
2671 | ||
2672 | static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf) | |
2673 | { | |
2674 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); | |
2675 | } | |
2676 | DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL); | |
2677 | ||
2678 | static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf) | |
2679 | { | |
2680 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); | |
2681 | } | |
2682 | DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL); | |
2683 | ||
2684 | static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf) | |
2685 | { | |
2686 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); | |
2687 | } | |
2688 | static ssize_t sdebug_every_nth_store(struct device_driver * ddp, | |
2689 | const char * buf, size_t count) | |
2690 | { | |
2691 | int nth; | |
2692 | ||
2693 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { | |
2694 | scsi_debug_every_nth = nth; | |
2695 | scsi_debug_cmnd_count = 0; | |
2696 | return count; | |
2697 | } | |
2698 | return -EINVAL; | |
2699 | } | |
2700 | DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show, | |
2701 | sdebug_every_nth_store); | |
2702 | ||
2703 | static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf) | |
2704 | { | |
2705 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); | |
2706 | } | |
2707 | static ssize_t sdebug_max_luns_store(struct device_driver * ddp, | |
2708 | const char * buf, size_t count) | |
2709 | { | |
2710 | int n; | |
2711 | ||
2712 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2713 | scsi_debug_max_luns = n; | |
2714 | sdebug_max_tgts_luns(); | |
2715 | return count; | |
2716 | } | |
2717 | return -EINVAL; | |
2718 | } | |
2719 | DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, | |
2720 | sdebug_max_luns_store); | |
2721 | ||
2722 | static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf) | |
2723 | { | |
2724 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); | |
2725 | } | |
2726 | DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL); | |
2727 | ||
c65b1445 DG |
2728 | static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf) |
2729 | { | |
2730 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); | |
2731 | } | |
2732 | static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp, | |
2733 | const char * buf, size_t count) | |
2734 | { | |
2735 | int n; | |
2736 | ||
2737 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2738 | scsi_debug_virtual_gb = n; | |
2739 | if (scsi_debug_virtual_gb > 0) { | |
2740 | sdebug_capacity = 2048 * 1024; | |
2741 | sdebug_capacity *= scsi_debug_virtual_gb; | |
2742 | } else | |
2743 | sdebug_capacity = sdebug_store_sectors; | |
2744 | return count; | |
2745 | } | |
2746 | return -EINVAL; | |
2747 | } | |
2748 | DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show, | |
2749 | sdebug_virtual_gb_store); | |
2750 | ||
1da177e4 LT |
2751 | static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf) |
2752 | { | |
2753 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); | |
2754 | } | |
2755 | ||
2756 | static ssize_t sdebug_add_host_store(struct device_driver * ddp, | |
2757 | const char * buf, size_t count) | |
2758 | { | |
2759 | int delta_hosts; | |
2760 | char work[20]; | |
2761 | ||
2762 | if (1 != sscanf(buf, "%10s", work)) | |
2763 | return -EINVAL; | |
2764 | { /* temporary hack around sscanf() problem with -ve nums */ | |
2765 | int neg = 0; | |
2766 | ||
2767 | if ('-' == *work) | |
2768 | neg = 1; | |
2769 | if (1 != sscanf(work + neg, "%d", &delta_hosts)) | |
2770 | return -EINVAL; | |
2771 | if (neg) | |
2772 | delta_hosts = -delta_hosts; | |
2773 | } | |
2774 | if (delta_hosts > 0) { | |
2775 | do { | |
2776 | sdebug_add_adapter(); | |
2777 | } while (--delta_hosts); | |
2778 | } else if (delta_hosts < 0) { | |
2779 | do { | |
2780 | sdebug_remove_adapter(); | |
2781 | } while (++delta_hosts); | |
2782 | } | |
2783 | return count; | |
2784 | } | |
2785 | DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show, | |
2786 | sdebug_add_host_store); | |
2787 | ||
23183910 DG |
2788 | static ssize_t sdebug_vpd_use_hostno_show(struct device_driver * ddp, |
2789 | char * buf) | |
2790 | { | |
2791 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); | |
2792 | } | |
2793 | static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp, | |
2794 | const char * buf, size_t count) | |
2795 | { | |
2796 | int n; | |
2797 | ||
2798 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { | |
2799 | scsi_debug_vpd_use_hostno = n; | |
2800 | return count; | |
2801 | } | |
2802 | return -EINVAL; | |
2803 | } | |
2804 | DRIVER_ATTR(vpd_use_hostno, S_IRUGO | S_IWUSR, sdebug_vpd_use_hostno_show, | |
2805 | sdebug_vpd_use_hostno_store); | |
2806 | ||
2807 | /* Note: The following function creates attribute files in the | |
2808 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these | |
2809 | files (over those found in the /sys/module/scsi_debug/parameters | |
2810 | directory) is that auxiliary actions can be triggered when an attribute | |
2811 | is changed. For example see: sdebug_add_host_store() above. | |
2812 | */ | |
6ecaff7f | 2813 | static int do_create_driverfs_files(void) |
1da177e4 | 2814 | { |
6ecaff7f RD |
2815 | int ret; |
2816 | ||
2817 | ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host); | |
2818 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay); | |
2819 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); | |
2820 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense); | |
2821 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth); | |
23183910 | 2822 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
6ecaff7f | 2823 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
23183910 | 2824 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); |
6ecaff7f | 2825 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
23183910 | 2826 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
6ecaff7f RD |
2827 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
2828 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts); | |
2829 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); | |
23183910 DG |
2830 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); |
2831 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); | |
6ecaff7f | 2832 | return ret; |
1da177e4 LT |
2833 | } |
2834 | ||
2835 | static void do_remove_driverfs_files(void) | |
2836 | { | |
23183910 DG |
2837 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); |
2838 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); | |
1da177e4 LT |
2839 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
2840 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts); | |
2841 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype); | |
1da177e4 | 2842 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
23183910 DG |
2843 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
2844 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); | |
1da177e4 | 2845 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
23183910 | 2846 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
1da177e4 LT |
2847 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
2848 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense); | |
2849 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); | |
2850 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay); | |
2851 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); | |
2852 | } | |
2853 | ||
2854 | static int __init scsi_debug_init(void) | |
2855 | { | |
c65b1445 | 2856 | unsigned int sz; |
1da177e4 LT |
2857 | int host_to_add; |
2858 | int k; | |
6ecaff7f | 2859 | int ret; |
1da177e4 LT |
2860 | |
2861 | if (scsi_debug_dev_size_mb < 1) | |
2862 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ | |
c65b1445 DG |
2863 | sdebug_store_size = (unsigned int)scsi_debug_dev_size_mb * 1048576; |
2864 | sdebug_store_sectors = sdebug_store_size / SECT_SIZE; | |
2865 | if (scsi_debug_virtual_gb > 0) { | |
2866 | sdebug_capacity = 2048 * 1024; | |
2867 | sdebug_capacity *= scsi_debug_virtual_gb; | |
2868 | } else | |
2869 | sdebug_capacity = sdebug_store_sectors; | |
1da177e4 LT |
2870 | |
2871 | /* play around with geometry, don't waste too much on track 0 */ | |
2872 | sdebug_heads = 8; | |
2873 | sdebug_sectors_per = 32; | |
2874 | if (scsi_debug_dev_size_mb >= 16) | |
2875 | sdebug_heads = 32; | |
2876 | else if (scsi_debug_dev_size_mb >= 256) | |
2877 | sdebug_heads = 64; | |
2878 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
2879 | (sdebug_sectors_per * sdebug_heads); | |
2880 | if (sdebug_cylinders_per >= 1024) { | |
2881 | /* other LLDs do this; implies >= 1GB ram disk ... */ | |
2882 | sdebug_heads = 255; | |
2883 | sdebug_sectors_per = 63; | |
2884 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / | |
2885 | (sdebug_sectors_per * sdebug_heads); | |
2886 | } | |
2887 | ||
2888 | sz = sdebug_store_size; | |
2889 | fake_storep = vmalloc(sz); | |
2890 | if (NULL == fake_storep) { | |
2891 | printk(KERN_ERR "scsi_debug_init: out of memory, 1\n"); | |
2892 | return -ENOMEM; | |
2893 | } | |
2894 | memset(fake_storep, 0, sz); | |
2895 | if (scsi_debug_num_parts > 0) | |
2896 | sdebug_build_parts(fake_storep); | |
2897 | ||
6ecaff7f RD |
2898 | ret = device_register(&pseudo_primary); |
2899 | if (ret < 0) { | |
2900 | printk(KERN_WARNING "scsi_debug: device_register error: %d\n", | |
2901 | ret); | |
2902 | goto free_vm; | |
2903 | } | |
2904 | ret = bus_register(&pseudo_lld_bus); | |
2905 | if (ret < 0) { | |
2906 | printk(KERN_WARNING "scsi_debug: bus_register error: %d\n", | |
2907 | ret); | |
2908 | goto dev_unreg; | |
2909 | } | |
2910 | ret = driver_register(&sdebug_driverfs_driver); | |
2911 | if (ret < 0) { | |
2912 | printk(KERN_WARNING "scsi_debug: driver_register error: %d\n", | |
2913 | ret); | |
2914 | goto bus_unreg; | |
2915 | } | |
2916 | ret = do_create_driverfs_files(); | |
2917 | if (ret < 0) { | |
2918 | printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n", | |
2919 | ret); | |
2920 | goto del_files; | |
2921 | } | |
1da177e4 | 2922 | |
6ecaff7f | 2923 | init_all_queued(); |
1da177e4 | 2924 | |
b02b6bc4 | 2925 | sdebug_driver_template.proc_name = sdebug_proc_name; |
1da177e4 LT |
2926 | |
2927 | host_to_add = scsi_debug_add_host; | |
2928 | scsi_debug_add_host = 0; | |
2929 | ||
2930 | for (k = 0; k < host_to_add; k++) { | |
2931 | if (sdebug_add_adapter()) { | |
2932 | printk(KERN_ERR "scsi_debug_init: " | |
2933 | "sdebug_add_adapter failed k=%d\n", k); | |
2934 | break; | |
2935 | } | |
2936 | } | |
2937 | ||
2938 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { | |
2939 | printk(KERN_INFO "scsi_debug_init: built %d host(s)\n", | |
2940 | scsi_debug_add_host); | |
2941 | } | |
2942 | return 0; | |
6ecaff7f RD |
2943 | |
2944 | del_files: | |
2945 | do_remove_driverfs_files(); | |
2946 | driver_unregister(&sdebug_driverfs_driver); | |
2947 | bus_unreg: | |
2948 | bus_unregister(&pseudo_lld_bus); | |
2949 | dev_unreg: | |
2950 | device_unregister(&pseudo_primary); | |
2951 | free_vm: | |
2952 | vfree(fake_storep); | |
2953 | ||
2954 | return ret; | |
1da177e4 LT |
2955 | } |
2956 | ||
2957 | static void __exit scsi_debug_exit(void) | |
2958 | { | |
2959 | int k = scsi_debug_add_host; | |
2960 | ||
2961 | stop_all_queued(); | |
2962 | for (; k; k--) | |
2963 | sdebug_remove_adapter(); | |
2964 | do_remove_driverfs_files(); | |
2965 | driver_unregister(&sdebug_driverfs_driver); | |
2966 | bus_unregister(&pseudo_lld_bus); | |
2967 | device_unregister(&pseudo_primary); | |
2968 | ||
2969 | vfree(fake_storep); | |
2970 | } | |
2971 | ||
2972 | device_initcall(scsi_debug_init); | |
2973 | module_exit(scsi_debug_exit); | |
2974 | ||
52c1da39 | 2975 | static void pseudo_0_release(struct device * dev) |
1da177e4 LT |
2976 | { |
2977 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) | |
2978 | printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n"); | |
2979 | } | |
2980 | ||
2981 | static struct device pseudo_primary = { | |
2982 | .bus_id = "pseudo_0", | |
2983 | .release = pseudo_0_release, | |
2984 | }; | |
2985 | ||
2986 | static int pseudo_lld_bus_match(struct device *dev, | |
2987 | struct device_driver *dev_driver) | |
2988 | { | |
2989 | return 1; | |
2990 | } | |
2991 | ||
2992 | static struct bus_type pseudo_lld_bus = { | |
2993 | .name = "pseudo", | |
2994 | .match = pseudo_lld_bus_match, | |
bbbe3a41 RK |
2995 | .probe = sdebug_driver_probe, |
2996 | .remove = sdebug_driver_remove, | |
1da177e4 LT |
2997 | }; |
2998 | ||
2999 | static void sdebug_release_adapter(struct device * dev) | |
3000 | { | |
3001 | struct sdebug_host_info *sdbg_host; | |
3002 | ||
3003 | sdbg_host = to_sdebug_host(dev); | |
3004 | kfree(sdbg_host); | |
3005 | } | |
3006 | ||
3007 | static int sdebug_add_adapter(void) | |
3008 | { | |
3009 | int k, devs_per_host; | |
3010 | int error = 0; | |
3011 | struct sdebug_host_info *sdbg_host; | |
3012 | struct sdebug_dev_info *sdbg_devinfo; | |
3013 | struct list_head *lh, *lh_sf; | |
3014 | ||
c65b1445 | 3015 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
1da177e4 LT |
3016 | if (NULL == sdbg_host) { |
3017 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
3018 | __FUNCTION__, __LINE__); | |
3019 | return -ENOMEM; | |
3020 | } | |
3021 | ||
1da177e4 LT |
3022 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
3023 | ||
3024 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; | |
3025 | for (k = 0; k < devs_per_host; k++) { | |
c65b1445 | 3026 | sdbg_devinfo = kzalloc(sizeof(*sdbg_devinfo),GFP_KERNEL); |
1da177e4 LT |
3027 | if (NULL == sdbg_devinfo) { |
3028 | printk(KERN_ERR "%s: out of memory at line %d\n", | |
3029 | __FUNCTION__, __LINE__); | |
3030 | error = -ENOMEM; | |
3031 | goto clean; | |
3032 | } | |
1da177e4 LT |
3033 | sdbg_devinfo->sdbg_host = sdbg_host; |
3034 | list_add_tail(&sdbg_devinfo->dev_list, | |
3035 | &sdbg_host->dev_info_list); | |
3036 | } | |
3037 | ||
3038 | spin_lock(&sdebug_host_list_lock); | |
3039 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); | |
3040 | spin_unlock(&sdebug_host_list_lock); | |
3041 | ||
3042 | sdbg_host->dev.bus = &pseudo_lld_bus; | |
3043 | sdbg_host->dev.parent = &pseudo_primary; | |
3044 | sdbg_host->dev.release = &sdebug_release_adapter; | |
3045 | sprintf(sdbg_host->dev.bus_id, "adapter%d", scsi_debug_add_host); | |
3046 | ||
3047 | error = device_register(&sdbg_host->dev); | |
3048 | ||
3049 | if (error) | |
3050 | goto clean; | |
3051 | ||
3052 | ++scsi_debug_add_host; | |
3053 | return error; | |
3054 | ||
3055 | clean: | |
3056 | list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { | |
3057 | sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, | |
3058 | dev_list); | |
3059 | list_del(&sdbg_devinfo->dev_list); | |
3060 | kfree(sdbg_devinfo); | |
3061 | } | |
3062 | ||
3063 | kfree(sdbg_host); | |
3064 | return error; | |
3065 | } | |
3066 | ||
3067 | static void sdebug_remove_adapter(void) | |
3068 | { | |
3069 | struct sdebug_host_info * sdbg_host = NULL; | |
3070 | ||
3071 | spin_lock(&sdebug_host_list_lock); | |
3072 | if (!list_empty(&sdebug_host_list)) { | |
3073 | sdbg_host = list_entry(sdebug_host_list.prev, | |
3074 | struct sdebug_host_info, host_list); | |
3075 | list_del(&sdbg_host->host_list); | |
3076 | } | |
3077 | spin_unlock(&sdebug_host_list_lock); | |
3078 | ||
3079 | if (!sdbg_host) | |
3080 | return; | |
3081 | ||
3082 | device_unregister(&sdbg_host->dev); | |
3083 | --scsi_debug_add_host; | |
3084 | } | |
3085 | ||
3086 | static int sdebug_driver_probe(struct device * dev) | |
3087 | { | |
3088 | int error = 0; | |
3089 | struct sdebug_host_info *sdbg_host; | |
3090 | struct Scsi_Host *hpnt; | |
3091 | ||
3092 | sdbg_host = to_sdebug_host(dev); | |
3093 | ||
3094 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); | |
3095 | if (NULL == hpnt) { | |
3096 | printk(KERN_ERR "%s: scsi_register failed\n", __FUNCTION__); | |
3097 | error = -ENODEV; | |
3098 | return error; | |
3099 | } | |
3100 | ||
3101 | sdbg_host->shost = hpnt; | |
3102 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; | |
3103 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) | |
3104 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
3105 | else | |
3106 | hpnt->max_id = scsi_debug_num_tgts; | |
c65b1445 | 3107 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
1da177e4 LT |
3108 | |
3109 | error = scsi_add_host(hpnt, &sdbg_host->dev); | |
3110 | if (error) { | |
3111 | printk(KERN_ERR "%s: scsi_add_host failed\n", __FUNCTION__); | |
3112 | error = -ENODEV; | |
3113 | scsi_host_put(hpnt); | |
3114 | } else | |
3115 | scsi_scan_host(hpnt); | |
3116 | ||
3117 | ||
3118 | return error; | |
3119 | } | |
3120 | ||
3121 | static int sdebug_driver_remove(struct device * dev) | |
3122 | { | |
3123 | struct list_head *lh, *lh_sf; | |
3124 | struct sdebug_host_info *sdbg_host; | |
3125 | struct sdebug_dev_info *sdbg_devinfo; | |
3126 | ||
3127 | sdbg_host = to_sdebug_host(dev); | |
3128 | ||
3129 | if (!sdbg_host) { | |
3130 | printk(KERN_ERR "%s: Unable to locate host info\n", | |
3131 | __FUNCTION__); | |
3132 | return -ENODEV; | |
3133 | } | |
3134 | ||
3135 | scsi_remove_host(sdbg_host->shost); | |
3136 | ||
3137 | list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { | |
3138 | sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, | |
3139 | dev_list); | |
3140 | list_del(&sdbg_devinfo->dev_list); | |
3141 | kfree(sdbg_devinfo); | |
3142 | } | |
3143 | ||
3144 | scsi_host_put(sdbg_host->shost); | |
3145 | return 0; | |
3146 | } | |
3147 | ||
3148 | static void sdebug_max_tgts_luns(void) | |
3149 | { | |
3150 | struct sdebug_host_info * sdbg_host; | |
3151 | struct Scsi_Host *hpnt; | |
3152 | ||
3153 | spin_lock(&sdebug_host_list_lock); | |
3154 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { | |
3155 | hpnt = sdbg_host->shost; | |
3156 | if ((hpnt->this_id >= 0) && | |
3157 | (scsi_debug_num_tgts > hpnt->this_id)) | |
3158 | hpnt->max_id = scsi_debug_num_tgts + 1; | |
3159 | else | |
3160 | hpnt->max_id = scsi_debug_num_tgts; | |
c65b1445 | 3161 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* scsi_debug_max_luns; */ |
1da177e4 LT |
3162 | } |
3163 | spin_unlock(&sdebug_host_list_lock); | |
3164 | } |