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 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
9 * This version is more generic, simulating a variable number of disk
10 * (or disk like devices) sharing a common amount of RAM. To be more
11 * realistic, the simulated devices have the transport attributes of
15 * For documentation see http://sg.danny.cz/sg/sdebug26.html
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]
28 #include <linux/module.h>
30 #include <linux/kernel.h>
31 #include <linux/errno.h>
32 #include <linux/timer.h>
33 #include <linux/slab.h>
34 #include <linux/types.h>
35 #include <linux/string.h>
36 #include <linux/genhd.h>
38 #include <linux/init.h>
39 #include <linux/proc_fs.h>
40 #include <linux/vmalloc.h>
41 #include <linux/moduleparam.h>
42 #include <linux/scatterlist.h>
43 #include <linux/blkdev.h>
44 #include <linux/crc-t10dif.h>
46 #include <net/checksum.h>
48 #include <asm/unaligned.h>
50 #include <scsi/scsi.h>
51 #include <scsi/scsi_cmnd.h>
52 #include <scsi/scsi_device.h>
53 #include <scsi/scsi_host.h>
54 #include <scsi/scsicam.h>
55 #include <scsi/scsi_eh.h>
56 #include <scsi/scsi_dbg.h>
59 #include "scsi_logging.h"
61 #define SCSI_DEBUG_VERSION "1.82"
62 static const char * scsi_debug_version_date = "20100324";
64 /* Additional Sense Code (ASC) */
65 #define NO_ADDITIONAL_SENSE 0x0
66 #define LOGICAL_UNIT_NOT_READY 0x4
67 #define UNRECOVERED_READ_ERR 0x11
68 #define PARAMETER_LIST_LENGTH_ERR 0x1a
69 #define INVALID_OPCODE 0x20
70 #define ADDR_OUT_OF_RANGE 0x21
71 #define INVALID_COMMAND_OPCODE 0x20
72 #define INVALID_FIELD_IN_CDB 0x24
73 #define INVALID_FIELD_IN_PARAM_LIST 0x26
74 #define POWERON_RESET 0x29
75 #define SAVING_PARAMS_UNSUP 0x39
76 #define TRANSPORT_PROBLEM 0x4b
77 #define THRESHOLD_EXCEEDED 0x5d
78 #define LOW_POWER_COND_ON 0x5e
80 /* Additional Sense Code Qualifier (ASCQ) */
81 #define ACK_NAK_TO 0x3
83 #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */
85 /* Default values for driver parameters */
86 #define DEF_NUM_HOST 1
87 #define DEF_NUM_TGTS 1
88 #define DEF_MAX_LUNS 1
89 /* With these defaults, this driver will make 1 host with 1 target
90 * (id 0) containing 1 logical unit (lun 0). That is 1 device.
94 #define DEF_DEV_SIZE_MB 8
98 #define DEF_EVERY_NTH 0
103 #define DEF_LBPWS10 0
105 #define DEF_LOWEST_ALIGNED 0
106 #define DEF_NO_LUN_0 0
107 #define DEF_NUM_PARTS 0
109 #define DEF_OPT_BLKS 64
110 #define DEF_PHYSBLK_EXP 0
112 #define DEF_REMOVABLE false
113 #define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */
114 #define DEF_SECTOR_SIZE 512
115 #define DEF_UNMAP_ALIGNMENT 0
116 #define DEF_UNMAP_GRANULARITY 1
117 #define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF
118 #define DEF_UNMAP_MAX_DESC 256
119 #define DEF_VIRTUAL_GB 0
120 #define DEF_VPD_USE_HOSTNO 1
121 #define DEF_WRITESAME_LENGTH 0xFFFF
123 /* bit mask values for scsi_debug_opts */
124 #define SCSI_DEBUG_OPT_NOISE 1
125 #define SCSI_DEBUG_OPT_MEDIUM_ERR 2
126 #define SCSI_DEBUG_OPT_TIMEOUT 4
127 #define SCSI_DEBUG_OPT_RECOVERED_ERR 8
128 #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16
129 #define SCSI_DEBUG_OPT_DIF_ERR 32
130 #define SCSI_DEBUG_OPT_DIX_ERR 64
131 #define SCSI_DEBUG_OPT_MAC_TIMEOUT 128
132 /* When "every_nth" > 0 then modulo "every_nth" commands:
133 * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set
134 * - a RECOVERED_ERROR is simulated on successful read and write
135 * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set.
136 * - a TRANSPORT_ERROR is simulated on successful read and write
137 * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set.
139 * When "every_nth" < 0 then after "- every_nth" commands:
140 * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set
141 * - a RECOVERED_ERROR is simulated on successful read and write
142 * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set.
143 * - a TRANSPORT_ERROR is simulated on successful read and write
144 * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set.
145 * This will continue until some other action occurs (e.g. the user
146 * writing a new value (other than -1 or 1) to every_nth via sysfs).
149 /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this
150 * sector on read commands: */
151 #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */
152 #define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */
154 /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1)
155 * or "peripheral device" addressing (value 0) */
156 #define SAM2_LUN_ADDRESS_METHOD 0
157 #define SAM2_WLUN_REPORT_LUNS 0xc101
159 /* Can queue up to this number of commands. Typically commands that
160 * that have a non-zero delay are queued. */
161 #define SCSI_DEBUG_CANQUEUE 255
163 static int scsi_debug_add_host = DEF_NUM_HOST;
164 static int scsi_debug_ato = DEF_ATO;
165 static int scsi_debug_delay = DEF_DELAY;
166 static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB;
167 static int scsi_debug_dif = DEF_DIF;
168 static int scsi_debug_dix = DEF_DIX;
169 static int scsi_debug_dsense = DEF_D_SENSE;
170 static int scsi_debug_every_nth = DEF_EVERY_NTH;
171 static int scsi_debug_fake_rw = DEF_FAKE_RW;
172 static int scsi_debug_guard = DEF_GUARD;
173 static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED;
174 static int scsi_debug_max_luns = DEF_MAX_LUNS;
175 static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE;
176 static int scsi_debug_no_lun_0 = DEF_NO_LUN_0;
177 static int scsi_debug_no_uld = 0;
178 static int scsi_debug_num_parts = DEF_NUM_PARTS;
179 static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */
180 static int scsi_debug_opt_blks = DEF_OPT_BLKS;
181 static int scsi_debug_opts = DEF_OPTS;
182 static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP;
183 static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */
184 static int scsi_debug_scsi_level = DEF_SCSI_LEVEL;
185 static int scsi_debug_sector_size = DEF_SECTOR_SIZE;
186 static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB;
187 static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO;
188 static unsigned int scsi_debug_lbpu = DEF_LBPU;
189 static unsigned int scsi_debug_lbpws = DEF_LBPWS;
190 static unsigned int scsi_debug_lbpws10 = DEF_LBPWS10;
191 static unsigned int scsi_debug_lbprz = DEF_LBPRZ;
192 static unsigned int scsi_debug_unmap_alignment = DEF_UNMAP_ALIGNMENT;
193 static unsigned int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY;
194 static unsigned int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS;
195 static unsigned int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC;
196 static unsigned int scsi_debug_write_same_length = DEF_WRITESAME_LENGTH;
197 static bool scsi_debug_removable = DEF_REMOVABLE;
199 static int scsi_debug_cmnd_count = 0;
201 #define DEV_READONLY(TGT) (0)
203 static unsigned int sdebug_store_sectors;
204 static sector_t sdebug_capacity; /* in sectors */
206 /* old BIOS stuff, kernel may get rid of them but some mode sense pages
207 may still need them */
208 static int sdebug_heads; /* heads per disk */
209 static int sdebug_cylinders_per; /* cylinders per surface */
210 static int sdebug_sectors_per; /* sectors per cylinder */
212 #define SDEBUG_MAX_PARTS 4
214 #define SDEBUG_SENSE_LEN 32
216 #define SCSI_DEBUG_MAX_CMD_LEN 32
218 static unsigned int scsi_debug_lbp(void)
220 return scsi_debug_lbpu | scsi_debug_lbpws | scsi_debug_lbpws10;
223 struct sdebug_dev_info {
224 struct list_head dev_list;
225 unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */
226 unsigned int channel;
229 struct sdebug_host_info *sdbg_host;
236 struct sdebug_host_info {
237 struct list_head host_list;
238 struct Scsi_Host *shost;
240 struct list_head dev_info_list;
243 #define to_sdebug_host(d) \
244 container_of(d, struct sdebug_host_info, dev)
246 static LIST_HEAD(sdebug_host_list);
247 static DEFINE_SPINLOCK(sdebug_host_list_lock);
249 typedef void (* done_funct_t) (struct scsi_cmnd *);
251 struct sdebug_queued_cmd {
253 struct timer_list cmnd_timer;
254 done_funct_t done_funct;
255 struct scsi_cmnd * a_cmnd;
258 static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE];
260 static unsigned char * fake_storep; /* ramdisk storage */
261 static unsigned char *dif_storep; /* protection info */
262 static void *map_storep; /* provisioning map */
264 static unsigned long map_size;
265 static int num_aborts = 0;
266 static int num_dev_resets = 0;
267 static int num_bus_resets = 0;
268 static int num_host_resets = 0;
269 static int dix_writes;
270 static int dix_reads;
271 static int dif_errors;
273 static DEFINE_SPINLOCK(queued_arr_lock);
274 static DEFINE_RWLOCK(atomic_rw);
276 static char sdebug_proc_name[] = "scsi_debug";
278 static struct bus_type pseudo_lld_bus;
280 static inline sector_t dif_offset(sector_t sector)
285 static struct device_driver sdebug_driverfs_driver = {
286 .name = sdebug_proc_name,
287 .bus = &pseudo_lld_bus,
290 static const int check_condition_result =
291 (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
293 static const int illegal_condition_result =
294 (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION;
296 static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0,
298 static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0,
301 static int sdebug_add_adapter(void);
302 static void sdebug_remove_adapter(void);
304 static void sdebug_max_tgts_luns(void)
306 struct sdebug_host_info *sdbg_host;
307 struct Scsi_Host *hpnt;
309 spin_lock(&sdebug_host_list_lock);
310 list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) {
311 hpnt = sdbg_host->shost;
312 if ((hpnt->this_id >= 0) &&
313 (scsi_debug_num_tgts > hpnt->this_id))
314 hpnt->max_id = scsi_debug_num_tgts + 1;
316 hpnt->max_id = scsi_debug_num_tgts;
317 /* scsi_debug_max_luns; */
318 hpnt->max_lun = SAM2_WLUN_REPORT_LUNS;
320 spin_unlock(&sdebug_host_list_lock);
323 static void mk_sense_buffer(struct sdebug_dev_info *devip, int key,
326 unsigned char *sbuff;
328 sbuff = devip->sense_buff;
329 memset(sbuff, 0, SDEBUG_SENSE_LEN);
331 scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq);
333 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
334 printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: "
335 "[0x%x,0x%x,0x%x]\n", key, asc, asq);
338 static void get_data_transfer_info(unsigned char *cmd,
339 unsigned long long *lba, unsigned int *num,
345 case VARIABLE_LENGTH_CMD:
346 *lba = (u64)cmd[19] | (u64)cmd[18] << 8 |
347 (u64)cmd[17] << 16 | (u64)cmd[16] << 24 |
348 (u64)cmd[15] << 32 | (u64)cmd[14] << 40 |
349 (u64)cmd[13] << 48 | (u64)cmd[12] << 56;
351 *ei_lba = (u32)cmd[23] | (u32)cmd[22] << 8 |
352 (u32)cmd[21] << 16 | (u32)cmd[20] << 24;
354 *num = (u32)cmd[31] | (u32)cmd[30] << 8 | (u32)cmd[29] << 16 |
361 *lba = (u64)cmd[9] | (u64)cmd[8] << 8 |
362 (u64)cmd[7] << 16 | (u64)cmd[6] << 24 |
363 (u64)cmd[5] << 32 | (u64)cmd[4] << 40 |
364 (u64)cmd[3] << 48 | (u64)cmd[2] << 56;
366 *num = (u32)cmd[13] | (u32)cmd[12] << 8 | (u32)cmd[11] << 16 |
371 *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 |
374 *num = (u32)cmd[9] | (u32)cmd[8] << 8 | (u32)cmd[7] << 16 |
381 *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 |
384 *num = (u32)cmd[8] | (u32)cmd[7] << 8;
388 *lba = (u32)cmd[3] | (u32)cmd[2] << 8 |
389 (u32)(cmd[1] & 0x1f) << 16;
390 *num = (0 == cmd[4]) ? 256 : cmd[4];
397 static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
399 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) {
400 printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd);
403 /* return -ENOTTY; // correct return but upsets fdisk */
406 static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only,
407 struct sdebug_dev_info * devip)
410 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
411 printk(KERN_INFO "scsi_debug: Reporting Unit "
412 "attention: power on reset\n");
414 mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0);
415 return check_condition_result;
417 if ((0 == reset_only) && devip->stopped) {
418 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
419 printk(KERN_INFO "scsi_debug: Reporting Not "
420 "ready: initializing command required\n");
421 mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY,
423 return check_condition_result;
428 /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */
429 static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr,
433 struct scsi_data_buffer *sdb = scsi_in(scp);
437 if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE))
438 return (DID_ERROR << 16);
440 act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents,
442 sdb->resid = scsi_bufflen(scp) - act_len;
447 /* Returns number of bytes fetched into 'arr' or -1 if error. */
448 static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr,
451 if (!scsi_bufflen(scp))
453 if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE))
456 return scsi_sg_copy_to_buffer(scp, arr, arr_len);
460 static const char * inq_vendor_id = "Linux ";
461 static const char * inq_product_id = "scsi_debug ";
462 static const char * inq_product_rev = "0004";
464 static int inquiry_evpd_83(unsigned char * arr, int port_group_id,
465 int target_dev_id, int dev_id_num,
466 const char * dev_id_str,
472 port_a = target_dev_id + 1;
473 /* T10 vendor identifier field format (faked) */
474 arr[0] = 0x2; /* ASCII */
477 memcpy(&arr[4], inq_vendor_id, 8);
478 memcpy(&arr[12], inq_product_id, 16);
479 memcpy(&arr[28], dev_id_str, dev_id_str_len);
480 num = 8 + 16 + dev_id_str_len;
483 if (dev_id_num >= 0) {
484 /* NAA-5, Logical unit identifier (binary) */
485 arr[num++] = 0x1; /* binary (not necessarily sas) */
486 arr[num++] = 0x3; /* PIV=0, lu, naa */
489 arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */
493 arr[num++] = (dev_id_num >> 24);
494 arr[num++] = (dev_id_num >> 16) & 0xff;
495 arr[num++] = (dev_id_num >> 8) & 0xff;
496 arr[num++] = dev_id_num & 0xff;
497 /* Target relative port number */
498 arr[num++] = 0x61; /* proto=sas, binary */
499 arr[num++] = 0x94; /* PIV=1, target port, rel port */
500 arr[num++] = 0x0; /* reserved */
501 arr[num++] = 0x4; /* length */
502 arr[num++] = 0x0; /* reserved */
503 arr[num++] = 0x0; /* reserved */
505 arr[num++] = 0x1; /* relative port A */
507 /* NAA-5, Target port identifier */
508 arr[num++] = 0x61; /* proto=sas, binary */
509 arr[num++] = 0x93; /* piv=1, target port, naa */
512 arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */
516 arr[num++] = (port_a >> 24);
517 arr[num++] = (port_a >> 16) & 0xff;
518 arr[num++] = (port_a >> 8) & 0xff;
519 arr[num++] = port_a & 0xff;
520 /* NAA-5, Target port group identifier */
521 arr[num++] = 0x61; /* proto=sas, binary */
522 arr[num++] = 0x95; /* piv=1, target port group id */
527 arr[num++] = (port_group_id >> 8) & 0xff;
528 arr[num++] = port_group_id & 0xff;
529 /* NAA-5, Target device identifier */
530 arr[num++] = 0x61; /* proto=sas, binary */
531 arr[num++] = 0xa3; /* piv=1, target device, naa */
534 arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */
538 arr[num++] = (target_dev_id >> 24);
539 arr[num++] = (target_dev_id >> 16) & 0xff;
540 arr[num++] = (target_dev_id >> 8) & 0xff;
541 arr[num++] = target_dev_id & 0xff;
542 /* SCSI name string: Target device identifier */
543 arr[num++] = 0x63; /* proto=sas, UTF-8 */
544 arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */
547 memcpy(arr + num, "naa.52222220", 12);
549 snprintf(b, sizeof(b), "%08X", target_dev_id);
550 memcpy(arr + num, b, 8);
552 memset(arr + num, 0, 4);
558 static unsigned char vpd84_data[] = {
559 /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0,
560 0x22,0x22,0x22,0x0,0xbb,0x1,
561 0x22,0x22,0x22,0x0,0xbb,0x2,
564 static int inquiry_evpd_84(unsigned char * arr)
566 memcpy(arr, vpd84_data, sizeof(vpd84_data));
567 return sizeof(vpd84_data);
570 static int inquiry_evpd_85(unsigned char * arr)
573 const char * na1 = "https://www.kernel.org/config";
574 const char * na2 = "http://www.kernel.org/log";
577 arr[num++] = 0x1; /* lu, storage config */
578 arr[num++] = 0x0; /* reserved */
583 plen = ((plen / 4) + 1) * 4;
584 arr[num++] = plen; /* length, null termianted, padded */
585 memcpy(arr + num, na1, olen);
586 memset(arr + num + olen, 0, plen - olen);
589 arr[num++] = 0x4; /* lu, logging */
590 arr[num++] = 0x0; /* reserved */
595 plen = ((plen / 4) + 1) * 4;
596 arr[num++] = plen; /* length, null terminated, padded */
597 memcpy(arr + num, na2, olen);
598 memset(arr + num + olen, 0, plen - olen);
604 /* SCSI ports VPD page */
605 static int inquiry_evpd_88(unsigned char * arr, int target_dev_id)
610 port_a = target_dev_id + 1;
612 arr[num++] = 0x0; /* reserved */
613 arr[num++] = 0x0; /* reserved */
615 arr[num++] = 0x1; /* relative port 1 (primary) */
616 memset(arr + num, 0, 6);
619 arr[num++] = 12; /* length tp descriptor */
620 /* naa-5 target port identifier (A) */
621 arr[num++] = 0x61; /* proto=sas, binary */
622 arr[num++] = 0x93; /* PIV=1, target port, NAA */
623 arr[num++] = 0x0; /* reserved */
624 arr[num++] = 0x8; /* length */
625 arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */
629 arr[num++] = (port_a >> 24);
630 arr[num++] = (port_a >> 16) & 0xff;
631 arr[num++] = (port_a >> 8) & 0xff;
632 arr[num++] = port_a & 0xff;
634 arr[num++] = 0x0; /* reserved */
635 arr[num++] = 0x0; /* reserved */
637 arr[num++] = 0x2; /* relative port 2 (secondary) */
638 memset(arr + num, 0, 6);
641 arr[num++] = 12; /* length tp descriptor */
642 /* naa-5 target port identifier (B) */
643 arr[num++] = 0x61; /* proto=sas, binary */
644 arr[num++] = 0x93; /* PIV=1, target port, NAA */
645 arr[num++] = 0x0; /* reserved */
646 arr[num++] = 0x8; /* length */
647 arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */
651 arr[num++] = (port_b >> 24);
652 arr[num++] = (port_b >> 16) & 0xff;
653 arr[num++] = (port_b >> 8) & 0xff;
654 arr[num++] = port_b & 0xff;
660 static unsigned char vpd89_data[] = {
661 /* from 4th byte */ 0,0,0,0,
662 'l','i','n','u','x',' ',' ',' ',
663 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ',
665 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,
667 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0,
668 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20,
669 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33,
670 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31,
672 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
674 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
676 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0,
677 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0,
678 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0,
679 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0,
680 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40,
681 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0,
682 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0,
683 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
684 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
685 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
686 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42,
687 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8,
688 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe,
689 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0,
690 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
691 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
692 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
693 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
694 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
695 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
696 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
697 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
698 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
699 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
700 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
701 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51,
704 static int inquiry_evpd_89(unsigned char * arr)
706 memcpy(arr, vpd89_data, sizeof(vpd89_data));
707 return sizeof(vpd89_data);
711 /* Block limits VPD page (SBC-3) */
712 static unsigned char vpdb0_data[] = {
713 /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64,
714 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
715 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
716 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
719 static int inquiry_evpd_b0(unsigned char * arr)
723 memcpy(arr, vpdb0_data, sizeof(vpdb0_data));
725 /* Optimal transfer length granularity */
726 gran = 1 << scsi_debug_physblk_exp;
727 arr[2] = (gran >> 8) & 0xff;
728 arr[3] = gran & 0xff;
730 /* Maximum Transfer Length */
731 if (sdebug_store_sectors > 0x400) {
732 arr[4] = (sdebug_store_sectors >> 24) & 0xff;
733 arr[5] = (sdebug_store_sectors >> 16) & 0xff;
734 arr[6] = (sdebug_store_sectors >> 8) & 0xff;
735 arr[7] = sdebug_store_sectors & 0xff;
738 /* Optimal Transfer Length */
739 put_unaligned_be32(scsi_debug_opt_blks, &arr[8]);
741 if (scsi_debug_lbpu) {
742 /* Maximum Unmap LBA Count */
743 put_unaligned_be32(scsi_debug_unmap_max_blocks, &arr[16]);
745 /* Maximum Unmap Block Descriptor Count */
746 put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]);
749 /* Unmap Granularity Alignment */
750 if (scsi_debug_unmap_alignment) {
751 put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]);
752 arr[28] |= 0x80; /* UGAVALID */
755 /* Optimal Unmap Granularity */
756 put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]);
758 /* Maximum WRITE SAME Length */
759 put_unaligned_be64(scsi_debug_write_same_length, &arr[32]);
761 return 0x3c; /* Mandatory page length for Logical Block Provisioning */
763 return sizeof(vpdb0_data);
766 /* Block device characteristics VPD page (SBC-3) */
767 static int inquiry_evpd_b1(unsigned char *arr)
769 memset(arr, 0, 0x3c);
771 arr[1] = 1; /* non rotating medium (e.g. solid state) */
773 arr[3] = 5; /* less than 1.8" */
778 /* Logical block provisioning VPD page (SBC-3) */
779 static int inquiry_evpd_b2(unsigned char *arr)
782 arr[0] = 0; /* threshold exponent */
787 if (scsi_debug_lbpws)
790 if (scsi_debug_lbpws10)
793 if (scsi_debug_lbprz)
799 #define SDEBUG_LONG_INQ_SZ 96
800 #define SDEBUG_MAX_INQ_ARR_SZ 584
802 static int resp_inquiry(struct scsi_cmnd * scp, int target,
803 struct sdebug_dev_info * devip)
805 unsigned char pq_pdt;
807 unsigned char *cmd = (unsigned char *)scp->cmnd;
808 int alloc_len, n, ret;
810 alloc_len = (cmd[3] << 8) + cmd[4];
811 arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC);
813 return DID_REQUEUE << 16;
815 pq_pdt = 0x1e; /* present, wlun */
816 else if (scsi_debug_no_lun_0 && (0 == devip->lun))
817 pq_pdt = 0x7f; /* not present, no device type */
819 pq_pdt = (scsi_debug_ptype & 0x1f);
821 if (0x2 & cmd[1]) { /* CMDDT bit set */
822 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
825 return check_condition_result;
826 } else if (0x1 & cmd[1]) { /* EVPD bit set */
827 int lu_id_num, port_group_id, target_dev_id, len;
829 int host_no = devip->sdbg_host->shost->host_no;
831 port_group_id = (((host_no + 1) & 0x7f) << 8) +
832 (devip->channel & 0x7f);
833 if (0 == scsi_debug_vpd_use_hostno)
835 lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) +
836 (devip->target * 1000) + devip->lun);
837 target_dev_id = ((host_no + 1) * 2000) +
838 (devip->target * 1000) - 3;
839 len = scnprintf(lu_id_str, 6, "%d", lu_id_num);
840 if (0 == cmd[2]) { /* supported vital product data pages */
841 arr[1] = cmd[2]; /*sanity */
843 arr[n++] = 0x0; /* this page */
844 arr[n++] = 0x80; /* unit serial number */
845 arr[n++] = 0x83; /* device identification */
846 arr[n++] = 0x84; /* software interface ident. */
847 arr[n++] = 0x85; /* management network addresses */
848 arr[n++] = 0x86; /* extended inquiry */
849 arr[n++] = 0x87; /* mode page policy */
850 arr[n++] = 0x88; /* SCSI ports */
851 arr[n++] = 0x89; /* ATA information */
852 arr[n++] = 0xb0; /* Block limits (SBC) */
853 arr[n++] = 0xb1; /* Block characteristics (SBC) */
854 if (scsi_debug_lbp()) /* Logical Block Prov. (SBC) */
856 arr[3] = n - 4; /* number of supported VPD pages */
857 } else if (0x80 == cmd[2]) { /* unit serial number */
858 arr[1] = cmd[2]; /*sanity */
860 memcpy(&arr[4], lu_id_str, len);
861 } else if (0x83 == cmd[2]) { /* device identification */
862 arr[1] = cmd[2]; /*sanity */
863 arr[3] = inquiry_evpd_83(&arr[4], port_group_id,
864 target_dev_id, lu_id_num,
866 } else if (0x84 == cmd[2]) { /* Software interface ident. */
867 arr[1] = cmd[2]; /*sanity */
868 arr[3] = inquiry_evpd_84(&arr[4]);
869 } else if (0x85 == cmd[2]) { /* Management network addresses */
870 arr[1] = cmd[2]; /*sanity */
871 arr[3] = inquiry_evpd_85(&arr[4]);
872 } else if (0x86 == cmd[2]) { /* extended inquiry */
873 arr[1] = cmd[2]; /*sanity */
874 arr[3] = 0x3c; /* number of following entries */
875 if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION)
876 arr[4] = 0x4; /* SPT: GRD_CHK:1 */
877 else if (scsi_debug_dif)
878 arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */
880 arr[4] = 0x0; /* no protection stuff */
881 arr[5] = 0x7; /* head of q, ordered + simple q's */
882 } else if (0x87 == cmd[2]) { /* mode page policy */
883 arr[1] = cmd[2]; /*sanity */
884 arr[3] = 0x8; /* number of following entries */
885 arr[4] = 0x2; /* disconnect-reconnect mp */
886 arr[6] = 0x80; /* mlus, shared */
887 arr[8] = 0x18; /* protocol specific lu */
888 arr[10] = 0x82; /* mlus, per initiator port */
889 } else if (0x88 == cmd[2]) { /* SCSI Ports */
890 arr[1] = cmd[2]; /*sanity */
891 arr[3] = inquiry_evpd_88(&arr[4], target_dev_id);
892 } else if (0x89 == cmd[2]) { /* ATA information */
893 arr[1] = cmd[2]; /*sanity */
894 n = inquiry_evpd_89(&arr[4]);
897 } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */
898 arr[1] = cmd[2]; /*sanity */
899 arr[3] = inquiry_evpd_b0(&arr[4]);
900 } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */
901 arr[1] = cmd[2]; /*sanity */
902 arr[3] = inquiry_evpd_b1(&arr[4]);
903 } else if (0xb2 == cmd[2]) { /* Logical Block Prov. (SBC) */
904 arr[1] = cmd[2]; /*sanity */
905 arr[3] = inquiry_evpd_b2(&arr[4]);
907 /* Illegal request, invalid field in cdb */
908 mk_sense_buffer(devip, ILLEGAL_REQUEST,
909 INVALID_FIELD_IN_CDB, 0);
911 return check_condition_result;
913 len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len);
914 ret = fill_from_dev_buffer(scp, arr,
915 min(len, SDEBUG_MAX_INQ_ARR_SZ));
919 /* drops through here for a standard inquiry */
920 arr[1] = scsi_debug_removable ? 0x80 : 0; /* Removable disk */
921 arr[2] = scsi_debug_scsi_level;
922 arr[3] = 2; /* response_data_format==2 */
923 arr[4] = SDEBUG_LONG_INQ_SZ - 5;
924 arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */
925 if (0 == scsi_debug_vpd_use_hostno)
926 arr[5] = 0x10; /* claim: implicit TGPS */
927 arr[6] = 0x10; /* claim: MultiP */
928 /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */
929 arr[7] = 0xa; /* claim: LINKED + CMDQUE */
930 memcpy(&arr[8], inq_vendor_id, 8);
931 memcpy(&arr[16], inq_product_id, 16);
932 memcpy(&arr[32], inq_product_rev, 4);
933 /* version descriptors (2 bytes each) follow */
934 arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */
935 arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */
937 if (scsi_debug_ptype == 0) {
938 arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */
939 } else if (scsi_debug_ptype == 1) {
940 arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */
942 arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */
943 ret = fill_from_dev_buffer(scp, arr,
944 min(alloc_len, SDEBUG_LONG_INQ_SZ));
949 static int resp_requests(struct scsi_cmnd * scp,
950 struct sdebug_dev_info * devip)
952 unsigned char * sbuff;
953 unsigned char *cmd = (unsigned char *)scp->cmnd;
954 unsigned char arr[SDEBUG_SENSE_LEN];
958 memset(arr, 0, sizeof(arr));
959 if (devip->reset == 1)
960 mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0);
961 want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense;
962 sbuff = devip->sense_buff;
963 if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) {
966 arr[1] = 0x0; /* NO_SENSE in sense_key */
967 arr[2] = THRESHOLD_EXCEEDED;
968 arr[3] = 0xff; /* TEST set and MRIE==6 */
971 arr[2] = 0x0; /* NO_SENSE in sense_key */
972 arr[7] = 0xa; /* 18 byte sense buffer */
973 arr[12] = THRESHOLD_EXCEEDED;
974 arr[13] = 0xff; /* TEST set and MRIE==6 */
977 memcpy(arr, sbuff, SDEBUG_SENSE_LEN);
978 if ((cmd[1] & 1) && (! scsi_debug_dsense)) {
979 /* DESC bit set and sense_buff in fixed format */
980 memset(arr, 0, sizeof(arr));
982 arr[1] = sbuff[2]; /* sense key */
983 arr[2] = sbuff[12]; /* asc */
984 arr[3] = sbuff[13]; /* ascq */
988 mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0);
989 return fill_from_dev_buffer(scp, arr, len);
992 static int resp_start_stop(struct scsi_cmnd * scp,
993 struct sdebug_dev_info * devip)
995 unsigned char *cmd = (unsigned char *)scp->cmnd;
996 int power_cond, errsts, start;
998 if ((errsts = check_readiness(scp, 1, devip)))
1000 power_cond = (cmd[4] & 0xf0) >> 4;
1002 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
1004 return check_condition_result;
1007 if (start == devip->stopped)
1008 devip->stopped = !start;
1012 static sector_t get_sdebug_capacity(void)
1014 if (scsi_debug_virtual_gb > 0)
1015 return (sector_t)scsi_debug_virtual_gb *
1016 (1073741824 / scsi_debug_sector_size);
1018 return sdebug_store_sectors;
1021 #define SDEBUG_READCAP_ARR_SZ 8
1022 static int resp_readcap(struct scsi_cmnd * scp,
1023 struct sdebug_dev_info * devip)
1025 unsigned char arr[SDEBUG_READCAP_ARR_SZ];
1029 if ((errsts = check_readiness(scp, 1, devip)))
1031 /* following just in case virtual_gb changed */
1032 sdebug_capacity = get_sdebug_capacity();
1033 memset(arr, 0, SDEBUG_READCAP_ARR_SZ);
1034 if (sdebug_capacity < 0xffffffff) {
1035 capac = (unsigned int)sdebug_capacity - 1;
1036 arr[0] = (capac >> 24);
1037 arr[1] = (capac >> 16) & 0xff;
1038 arr[2] = (capac >> 8) & 0xff;
1039 arr[3] = capac & 0xff;
1046 arr[6] = (scsi_debug_sector_size >> 8) & 0xff;
1047 arr[7] = scsi_debug_sector_size & 0xff;
1048 return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ);
1051 #define SDEBUG_READCAP16_ARR_SZ 32
1052 static int resp_readcap16(struct scsi_cmnd * scp,
1053 struct sdebug_dev_info * devip)
1055 unsigned char *cmd = (unsigned char *)scp->cmnd;
1056 unsigned char arr[SDEBUG_READCAP16_ARR_SZ];
1057 unsigned long long capac;
1058 int errsts, k, alloc_len;
1060 if ((errsts = check_readiness(scp, 1, devip)))
1062 alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8)
1064 /* following just in case virtual_gb changed */
1065 sdebug_capacity = get_sdebug_capacity();
1066 memset(arr, 0, SDEBUG_READCAP16_ARR_SZ);
1067 capac = sdebug_capacity - 1;
1068 for (k = 0; k < 8; ++k, capac >>= 8)
1069 arr[7 - k] = capac & 0xff;
1070 arr[8] = (scsi_debug_sector_size >> 24) & 0xff;
1071 arr[9] = (scsi_debug_sector_size >> 16) & 0xff;
1072 arr[10] = (scsi_debug_sector_size >> 8) & 0xff;
1073 arr[11] = scsi_debug_sector_size & 0xff;
1074 arr[13] = scsi_debug_physblk_exp & 0xf;
1075 arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f;
1077 if (scsi_debug_lbp()) {
1078 arr[14] |= 0x80; /* LBPME */
1079 if (scsi_debug_lbprz)
1080 arr[14] |= 0x40; /* LBPRZ */
1083 arr[15] = scsi_debug_lowest_aligned & 0xff;
1085 if (scsi_debug_dif) {
1086 arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */
1087 arr[12] |= 1; /* PROT_EN */
1090 return fill_from_dev_buffer(scp, arr,
1091 min(alloc_len, SDEBUG_READCAP16_ARR_SZ));
1094 #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412
1096 static int resp_report_tgtpgs(struct scsi_cmnd * scp,
1097 struct sdebug_dev_info * devip)
1099 unsigned char *cmd = (unsigned char *)scp->cmnd;
1100 unsigned char * arr;
1101 int host_no = devip->sdbg_host->shost->host_no;
1102 int n, ret, alen, rlen;
1103 int port_group_a, port_group_b, port_a, port_b;
1105 alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8)
1108 arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC);
1110 return DID_REQUEUE << 16;
1112 * EVPD page 0x88 states we have two ports, one
1113 * real and a fake port with no device connected.
1114 * So we create two port groups with one port each
1115 * and set the group with port B to unavailable.
1117 port_a = 0x1; /* relative port A */
1118 port_b = 0x2; /* relative port B */
1119 port_group_a = (((host_no + 1) & 0x7f) << 8) +
1120 (devip->channel & 0x7f);
1121 port_group_b = (((host_no + 1) & 0x7f) << 8) +
1122 (devip->channel & 0x7f) + 0x80;
1125 * The asymmetric access state is cycled according to the host_id.
1128 if (0 == scsi_debug_vpd_use_hostno) {
1129 arr[n++] = host_no % 3; /* Asymm access state */
1130 arr[n++] = 0x0F; /* claim: all states are supported */
1132 arr[n++] = 0x0; /* Active/Optimized path */
1133 arr[n++] = 0x01; /* claim: only support active/optimized paths */
1135 arr[n++] = (port_group_a >> 8) & 0xff;
1136 arr[n++] = port_group_a & 0xff;
1137 arr[n++] = 0; /* Reserved */
1138 arr[n++] = 0; /* Status code */
1139 arr[n++] = 0; /* Vendor unique */
1140 arr[n++] = 0x1; /* One port per group */
1141 arr[n++] = 0; /* Reserved */
1142 arr[n++] = 0; /* Reserved */
1143 arr[n++] = (port_a >> 8) & 0xff;
1144 arr[n++] = port_a & 0xff;
1145 arr[n++] = 3; /* Port unavailable */
1146 arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */
1147 arr[n++] = (port_group_b >> 8) & 0xff;
1148 arr[n++] = port_group_b & 0xff;
1149 arr[n++] = 0; /* Reserved */
1150 arr[n++] = 0; /* Status code */
1151 arr[n++] = 0; /* Vendor unique */
1152 arr[n++] = 0x1; /* One port per group */
1153 arr[n++] = 0; /* Reserved */
1154 arr[n++] = 0; /* Reserved */
1155 arr[n++] = (port_b >> 8) & 0xff;
1156 arr[n++] = port_b & 0xff;
1159 arr[0] = (rlen >> 24) & 0xff;
1160 arr[1] = (rlen >> 16) & 0xff;
1161 arr[2] = (rlen >> 8) & 0xff;
1162 arr[3] = rlen & 0xff;
1165 * Return the smallest value of either
1166 * - The allocated length
1167 * - The constructed command length
1168 * - The maximum array size
1171 ret = fill_from_dev_buffer(scp, arr,
1172 min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ));
1177 /* <<Following mode page info copied from ST318451LW>> */
1179 static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target)
1180 { /* Read-Write Error Recovery page for mode_sense */
1181 unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0,
1184 memcpy(p, err_recov_pg, sizeof(err_recov_pg));
1186 memset(p + 2, 0, sizeof(err_recov_pg) - 2);
1187 return sizeof(err_recov_pg);
1190 static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target)
1191 { /* Disconnect-Reconnect page for mode_sense */
1192 unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0,
1193 0, 0, 0, 0, 0, 0, 0, 0};
1195 memcpy(p, disconnect_pg, sizeof(disconnect_pg));
1197 memset(p + 2, 0, sizeof(disconnect_pg) - 2);
1198 return sizeof(disconnect_pg);
1201 static int resp_format_pg(unsigned char * p, int pcontrol, int target)
1202 { /* Format device page for mode_sense */
1203 unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0,
1204 0, 0, 0, 0, 0, 0, 0, 0,
1205 0, 0, 0, 0, 0x40, 0, 0, 0};
1207 memcpy(p, format_pg, sizeof(format_pg));
1208 p[10] = (sdebug_sectors_per >> 8) & 0xff;
1209 p[11] = sdebug_sectors_per & 0xff;
1210 p[12] = (scsi_debug_sector_size >> 8) & 0xff;
1211 p[13] = scsi_debug_sector_size & 0xff;
1212 if (scsi_debug_removable)
1213 p[20] |= 0x20; /* should agree with INQUIRY */
1215 memset(p + 2, 0, sizeof(format_pg) - 2);
1216 return sizeof(format_pg);
1219 static int resp_caching_pg(unsigned char * p, int pcontrol, int target)
1220 { /* Caching page for mode_sense */
1221 unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0,
1222 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0};
1224 memcpy(p, caching_pg, sizeof(caching_pg));
1226 memset(p + 2, 0, sizeof(caching_pg) - 2);
1227 return sizeof(caching_pg);
1230 static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target)
1231 { /* Control mode page for mode_sense */
1232 unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0,
1234 unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0,
1237 if (scsi_debug_dsense)
1238 ctrl_m_pg[2] |= 0x4;
1240 ctrl_m_pg[2] &= ~0x4;
1243 ctrl_m_pg[5] |= 0x80; /* ATO=1 */
1245 memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg));
1247 memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg));
1248 else if (2 == pcontrol)
1249 memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg));
1250 return sizeof(ctrl_m_pg);
1254 static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target)
1255 { /* Informational Exceptions control mode page for mode_sense */
1256 unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0,
1258 unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0,
1261 memcpy(p, iec_m_pg, sizeof(iec_m_pg));
1263 memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg));
1264 else if (2 == pcontrol)
1265 memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg));
1266 return sizeof(iec_m_pg);
1269 static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target)
1270 { /* SAS SSP mode page - short format for mode_sense */
1271 unsigned char sas_sf_m_pg[] = {0x19, 0x6,
1272 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0};
1274 memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg));
1276 memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2);
1277 return sizeof(sas_sf_m_pg);
1281 static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target,
1283 { /* SAS phy control and discover mode page for mode_sense */
1284 unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2,
1285 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0,
1286 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0,
1287 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1,
1288 0x2, 0, 0, 0, 0, 0, 0, 0,
1289 0x88, 0x99, 0, 0, 0, 0, 0, 0,
1290 0, 0, 0, 0, 0, 0, 0, 0,
1291 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0,
1292 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0,
1293 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1,
1294 0x3, 0, 0, 0, 0, 0, 0, 0,
1295 0x88, 0x99, 0, 0, 0, 0, 0, 0,
1296 0, 0, 0, 0, 0, 0, 0, 0,
1300 port_a = target_dev_id + 1;
1301 port_b = port_a + 1;
1302 memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg));
1303 p[20] = (port_a >> 24);
1304 p[21] = (port_a >> 16) & 0xff;
1305 p[22] = (port_a >> 8) & 0xff;
1306 p[23] = port_a & 0xff;
1307 p[48 + 20] = (port_b >> 24);
1308 p[48 + 21] = (port_b >> 16) & 0xff;
1309 p[48 + 22] = (port_b >> 8) & 0xff;
1310 p[48 + 23] = port_b & 0xff;
1312 memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4);
1313 return sizeof(sas_pcd_m_pg);
1316 static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol)
1317 { /* SAS SSP shared protocol specific port mode subpage */
1318 unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0,
1319 0, 0, 0, 0, 0, 0, 0, 0,
1322 memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg));
1324 memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4);
1325 return sizeof(sas_sha_m_pg);
1328 #define SDEBUG_MAX_MSENSE_SZ 256
1330 static int resp_mode_sense(struct scsi_cmnd * scp, int target,
1331 struct sdebug_dev_info * devip)
1333 unsigned char dbd, llbaa;
1334 int pcontrol, pcode, subpcode, bd_len;
1335 unsigned char dev_spec;
1336 int k, alloc_len, msense_6, offset, len, errsts, target_dev_id;
1338 unsigned char arr[SDEBUG_MAX_MSENSE_SZ];
1339 unsigned char *cmd = (unsigned char *)scp->cmnd;
1341 if ((errsts = check_readiness(scp, 1, devip)))
1343 dbd = !!(cmd[1] & 0x8);
1344 pcontrol = (cmd[2] & 0xc0) >> 6;
1345 pcode = cmd[2] & 0x3f;
1347 msense_6 = (MODE_SENSE == cmd[0]);
1348 llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10);
1349 if ((0 == scsi_debug_ptype) && (0 == dbd))
1350 bd_len = llbaa ? 16 : 8;
1353 alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]);
1354 memset(arr, 0, SDEBUG_MAX_MSENSE_SZ);
1355 if (0x3 == pcontrol) { /* Saving values not supported */
1356 mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP,
1358 return check_condition_result;
1360 target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) +
1361 (devip->target * 1000) - 3;
1362 /* set DPOFUA bit for disks */
1363 if (0 == scsi_debug_ptype)
1364 dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10;
1374 arr[4] = 0x1; /* set LONGLBA bit */
1375 arr[7] = bd_len; /* assume 255 or less */
1379 if ((bd_len > 0) && (!sdebug_capacity))
1380 sdebug_capacity = get_sdebug_capacity();
1383 if (sdebug_capacity > 0xfffffffe) {
1389 ap[0] = (sdebug_capacity >> 24) & 0xff;
1390 ap[1] = (sdebug_capacity >> 16) & 0xff;
1391 ap[2] = (sdebug_capacity >> 8) & 0xff;
1392 ap[3] = sdebug_capacity & 0xff;
1394 ap[6] = (scsi_debug_sector_size >> 8) & 0xff;
1395 ap[7] = scsi_debug_sector_size & 0xff;
1398 } else if (16 == bd_len) {
1399 unsigned long long capac = sdebug_capacity;
1401 for (k = 0; k < 8; ++k, capac >>= 8)
1402 ap[7 - k] = capac & 0xff;
1403 ap[12] = (scsi_debug_sector_size >> 24) & 0xff;
1404 ap[13] = (scsi_debug_sector_size >> 16) & 0xff;
1405 ap[14] = (scsi_debug_sector_size >> 8) & 0xff;
1406 ap[15] = scsi_debug_sector_size & 0xff;
1411 if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) {
1412 /* TODO: Control Extension page */
1413 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
1415 return check_condition_result;
1418 case 0x1: /* Read-Write error recovery page, direct access */
1419 len = resp_err_recov_pg(ap, pcontrol, target);
1422 case 0x2: /* Disconnect-Reconnect page, all devices */
1423 len = resp_disconnect_pg(ap, pcontrol, target);
1426 case 0x3: /* Format device page, direct access */
1427 len = resp_format_pg(ap, pcontrol, target);
1430 case 0x8: /* Caching page, direct access */
1431 len = resp_caching_pg(ap, pcontrol, target);
1434 case 0xa: /* Control Mode page, all devices */
1435 len = resp_ctrl_m_pg(ap, pcontrol, target);
1438 case 0x19: /* if spc==1 then sas phy, control+discover */
1439 if ((subpcode > 0x2) && (subpcode < 0xff)) {
1440 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1441 INVALID_FIELD_IN_CDB, 0);
1442 return check_condition_result;
1445 if ((0x0 == subpcode) || (0xff == subpcode))
1446 len += resp_sas_sf_m_pg(ap + len, pcontrol, target);
1447 if ((0x1 == subpcode) || (0xff == subpcode))
1448 len += resp_sas_pcd_m_spg(ap + len, pcontrol, target,
1450 if ((0x2 == subpcode) || (0xff == subpcode))
1451 len += resp_sas_sha_m_spg(ap + len, pcontrol);
1454 case 0x1c: /* Informational Exceptions Mode page, all devices */
1455 len = resp_iec_m_pg(ap, pcontrol, target);
1458 case 0x3f: /* Read all Mode pages */
1459 if ((0 == subpcode) || (0xff == subpcode)) {
1460 len = resp_err_recov_pg(ap, pcontrol, target);
1461 len += resp_disconnect_pg(ap + len, pcontrol, target);
1462 len += resp_format_pg(ap + len, pcontrol, target);
1463 len += resp_caching_pg(ap + len, pcontrol, target);
1464 len += resp_ctrl_m_pg(ap + len, pcontrol, target);
1465 len += resp_sas_sf_m_pg(ap + len, pcontrol, target);
1466 if (0xff == subpcode) {
1467 len += resp_sas_pcd_m_spg(ap + len, pcontrol,
1468 target, target_dev_id);
1469 len += resp_sas_sha_m_spg(ap + len, pcontrol);
1471 len += resp_iec_m_pg(ap + len, pcontrol, target);
1473 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1474 INVALID_FIELD_IN_CDB, 0);
1475 return check_condition_result;
1480 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
1482 return check_condition_result;
1485 arr[0] = offset - 1;
1487 arr[0] = ((offset - 2) >> 8) & 0xff;
1488 arr[1] = (offset - 2) & 0xff;
1490 return fill_from_dev_buffer(scp, arr, min(alloc_len, offset));
1493 #define SDEBUG_MAX_MSELECT_SZ 512
1495 static int resp_mode_select(struct scsi_cmnd * scp, int mselect6,
1496 struct sdebug_dev_info * devip)
1498 int pf, sp, ps, md_len, bd_len, off, spf, pg_len;
1499 int param_len, res, errsts, mpage;
1500 unsigned char arr[SDEBUG_MAX_MSELECT_SZ];
1501 unsigned char *cmd = (unsigned char *)scp->cmnd;
1503 if ((errsts = check_readiness(scp, 1, devip)))
1505 memset(arr, 0, sizeof(arr));
1508 param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]);
1509 if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) {
1510 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1511 INVALID_FIELD_IN_CDB, 0);
1512 return check_condition_result;
1514 res = fetch_to_dev_buffer(scp, arr, param_len);
1516 return (DID_ERROR << 16);
1517 else if ((res < param_len) &&
1518 (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts))
1519 printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, "
1520 " IO sent=%d bytes\n", param_len, res);
1521 md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2);
1522 bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]);
1524 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1525 INVALID_FIELD_IN_PARAM_LIST, 0);
1526 return check_condition_result;
1528 off = bd_len + (mselect6 ? 4 : 8);
1529 mpage = arr[off] & 0x3f;
1530 ps = !!(arr[off] & 0x80);
1532 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1533 INVALID_FIELD_IN_PARAM_LIST, 0);
1534 return check_condition_result;
1536 spf = !!(arr[off] & 0x40);
1537 pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) :
1539 if ((pg_len + off) > param_len) {
1540 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1541 PARAMETER_LIST_LENGTH_ERR, 0);
1542 return check_condition_result;
1545 case 0xa: /* Control Mode page */
1546 if (ctrl_m_pg[1] == arr[off + 1]) {
1547 memcpy(ctrl_m_pg + 2, arr + off + 2,
1548 sizeof(ctrl_m_pg) - 2);
1549 scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4);
1553 case 0x1c: /* Informational Exceptions Mode page */
1554 if (iec_m_pg[1] == arr[off + 1]) {
1555 memcpy(iec_m_pg + 2, arr + off + 2,
1556 sizeof(iec_m_pg) - 2);
1563 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1564 INVALID_FIELD_IN_PARAM_LIST, 0);
1565 return check_condition_result;
1568 static int resp_temp_l_pg(unsigned char * arr)
1570 unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38,
1571 0x0, 0x1, 0x3, 0x2, 0x0, 65,
1574 memcpy(arr, temp_l_pg, sizeof(temp_l_pg));
1575 return sizeof(temp_l_pg);
1578 static int resp_ie_l_pg(unsigned char * arr)
1580 unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38,
1583 memcpy(arr, ie_l_pg, sizeof(ie_l_pg));
1584 if (iec_m_pg[2] & 0x4) { /* TEST bit set */
1585 arr[4] = THRESHOLD_EXCEEDED;
1588 return sizeof(ie_l_pg);
1591 #define SDEBUG_MAX_LSENSE_SZ 512
1593 static int resp_log_sense(struct scsi_cmnd * scp,
1594 struct sdebug_dev_info * devip)
1596 int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n;
1597 unsigned char arr[SDEBUG_MAX_LSENSE_SZ];
1598 unsigned char *cmd = (unsigned char *)scp->cmnd;
1600 if ((errsts = check_readiness(scp, 1, devip)))
1602 memset(arr, 0, sizeof(arr));
1606 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1607 INVALID_FIELD_IN_CDB, 0);
1608 return check_condition_result;
1610 pcontrol = (cmd[2] & 0xc0) >> 6;
1611 pcode = cmd[2] & 0x3f;
1612 subpcode = cmd[3] & 0xff;
1613 alloc_len = (cmd[7] << 8) + cmd[8];
1615 if (0 == subpcode) {
1617 case 0x0: /* Supported log pages log page */
1619 arr[n++] = 0x0; /* this page */
1620 arr[n++] = 0xd; /* Temperature */
1621 arr[n++] = 0x2f; /* Informational exceptions */
1624 case 0xd: /* Temperature log page */
1625 arr[3] = resp_temp_l_pg(arr + 4);
1627 case 0x2f: /* Informational exceptions log page */
1628 arr[3] = resp_ie_l_pg(arr + 4);
1631 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1632 INVALID_FIELD_IN_CDB, 0);
1633 return check_condition_result;
1635 } else if (0xff == subpcode) {
1639 case 0x0: /* Supported log pages and subpages log page */
1642 arr[n++] = 0x0; /* 0,0 page */
1644 arr[n++] = 0xff; /* this page */
1646 arr[n++] = 0x0; /* Temperature */
1648 arr[n++] = 0x0; /* Informational exceptions */
1651 case 0xd: /* Temperature subpages */
1654 arr[n++] = 0x0; /* Temperature */
1657 case 0x2f: /* Informational exceptions subpages */
1660 arr[n++] = 0x0; /* Informational exceptions */
1664 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1665 INVALID_FIELD_IN_CDB, 0);
1666 return check_condition_result;
1669 mk_sense_buffer(devip, ILLEGAL_REQUEST,
1670 INVALID_FIELD_IN_CDB, 0);
1671 return check_condition_result;
1673 len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len);
1674 return fill_from_dev_buffer(scp, arr,
1675 min(len, SDEBUG_MAX_INQ_ARR_SZ));
1678 static int check_device_access_params(struct sdebug_dev_info *devi,
1679 unsigned long long lba, unsigned int num)
1681 if (lba + num > sdebug_capacity) {
1682 mk_sense_buffer(devi, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, 0);
1683 return check_condition_result;
1685 /* transfer length excessive (tie in to block limits VPD page) */
1686 if (num > sdebug_store_sectors) {
1687 mk_sense_buffer(devi, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0);
1688 return check_condition_result;
1693 /* Returns number of bytes copied or -1 if error. */
1694 static int do_device_access(struct scsi_cmnd *scmd,
1695 struct sdebug_dev_info *devi,
1696 unsigned long long lba, unsigned int num, int write)
1699 unsigned long long block, rest = 0;
1700 struct scsi_data_buffer *sdb;
1701 enum dma_data_direction dir;
1702 size_t (*func)(struct scatterlist *, unsigned int, void *, size_t,
1706 sdb = scsi_out(scmd);
1707 dir = DMA_TO_DEVICE;
1708 func = sg_pcopy_to_buffer;
1710 sdb = scsi_in(scmd);
1711 dir = DMA_FROM_DEVICE;
1712 func = sg_pcopy_from_buffer;
1717 if (!(scsi_bidi_cmnd(scmd) || scmd->sc_data_direction == dir))
1720 block = do_div(lba, sdebug_store_sectors);
1721 if (block + num > sdebug_store_sectors)
1722 rest = block + num - sdebug_store_sectors;
1724 ret = func(sdb->table.sgl, sdb->table.nents,
1725 fake_storep + (block * scsi_debug_sector_size),
1726 (num - rest) * scsi_debug_sector_size, 0);
1727 if (ret != (num - rest) * scsi_debug_sector_size)
1731 ret += func(sdb->table.sgl, sdb->table.nents,
1732 fake_storep, rest * scsi_debug_sector_size,
1733 (num - rest) * scsi_debug_sector_size);
1739 static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec,
1740 unsigned int sectors, u32 ei_lba)
1742 unsigned int i, resid;
1743 struct scatterlist *psgl;
1744 struct sd_dif_tuple *sdt;
1746 sector_t tmp_sec = start_sec;
1749 start_sec = do_div(tmp_sec, sdebug_store_sectors);
1751 sdt = (struct sd_dif_tuple *)(dif_storep + dif_offset(start_sec));
1753 for (i = 0 ; i < sectors ; i++) {
1756 if (sdt[i].app_tag == 0xffff)
1759 sector = start_sec + i;
1761 switch (scsi_debug_guard) {
1763 csum = ip_compute_csum(fake_storep +
1764 sector * scsi_debug_sector_size,
1765 scsi_debug_sector_size);
1768 csum = crc_t10dif(fake_storep +
1769 sector * scsi_debug_sector_size,
1770 scsi_debug_sector_size);
1771 csum = cpu_to_be16(csum);
1777 if (sdt[i].guard_tag != csum) {
1778 printk(KERN_ERR "%s: GUARD check failed on sector %lu" \
1779 " rcvd 0x%04x, data 0x%04x\n", __func__,
1780 (unsigned long)sector,
1781 be16_to_cpu(sdt[i].guard_tag),
1787 if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION &&
1788 be32_to_cpu(sdt[i].ref_tag) != (sector & 0xffffffff)) {
1789 printk(KERN_ERR "%s: REF check failed on sector %lu\n",
1790 __func__, (unsigned long)sector);
1795 if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
1796 be32_to_cpu(sdt[i].ref_tag) != ei_lba) {
1797 printk(KERN_ERR "%s: REF check failed on sector %lu\n",
1798 __func__, (unsigned long)sector);
1806 resid = sectors * 8; /* Bytes of protection data to copy into sgl */
1809 scsi_for_each_prot_sg(SCpnt, psgl, scsi_prot_sg_count(SCpnt), i) {
1810 int len = min(psgl->length, resid);
1812 paddr = kmap_atomic(sg_page(psgl)) + psgl->offset;
1813 memcpy(paddr, dif_storep + dif_offset(sector), len);
1816 if (sector >= sdebug_store_sectors) {
1819 sector = do_div(tmp_sec, sdebug_store_sectors);
1822 kunmap_atomic(paddr);
1830 static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba,
1831 unsigned int num, struct sdebug_dev_info *devip,
1834 unsigned long iflags;
1837 ret = check_device_access_params(devip, lba, num);
1841 if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) &&
1842 (lba <= (OPT_MEDIUM_ERR_ADDR + OPT_MEDIUM_ERR_NUM - 1)) &&
1843 ((lba + num) > OPT_MEDIUM_ERR_ADDR)) {
1844 /* claim unrecoverable read error */
1845 mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, 0);
1846 /* set info field and valid bit for fixed descriptor */
1847 if (0x70 == (devip->sense_buff[0] & 0x7f)) {
1848 devip->sense_buff[0] |= 0x80; /* Valid bit */
1849 ret = (lba < OPT_MEDIUM_ERR_ADDR)
1850 ? OPT_MEDIUM_ERR_ADDR : (int)lba;
1851 devip->sense_buff[3] = (ret >> 24) & 0xff;
1852 devip->sense_buff[4] = (ret >> 16) & 0xff;
1853 devip->sense_buff[5] = (ret >> 8) & 0xff;
1854 devip->sense_buff[6] = ret & 0xff;
1856 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
1857 return check_condition_result;
1861 if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) {
1862 int prot_ret = prot_verify_read(SCpnt, lba, num, ei_lba);
1865 mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, prot_ret);
1866 return illegal_condition_result;
1870 read_lock_irqsave(&atomic_rw, iflags);
1871 ret = do_device_access(SCpnt, devip, lba, num, 0);
1872 read_unlock_irqrestore(&atomic_rw, iflags);
1874 return DID_ERROR << 16;
1876 scsi_in(SCpnt)->resid = scsi_bufflen(SCpnt) - ret;
1881 void dump_sector(unsigned char *buf, int len)
1885 printk(KERN_ERR ">>> Sector Dump <<<\n");
1887 for (i = 0 ; i < len ; i += 16) {
1888 printk(KERN_ERR "%04d: ", i);
1890 for (j = 0 ; j < 16 ; j++) {
1891 unsigned char c = buf[i+j];
1892 if (c >= 0x20 && c < 0x7e)
1893 printk(" %c ", buf[i+j]);
1895 printk("%02x ", buf[i+j]);
1902 static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec,
1903 unsigned int sectors, u32 ei_lba)
1906 struct sd_dif_tuple *sdt;
1907 struct scatterlist *dsgl = scsi_sglist(SCpnt);
1908 struct scatterlist *psgl = scsi_prot_sglist(SCpnt);
1909 void *daddr, *paddr;
1910 sector_t tmp_sec = start_sec;
1913 unsigned short csum;
1915 sector = do_div(tmp_sec, sdebug_store_sectors);
1917 BUG_ON(scsi_sg_count(SCpnt) == 0);
1918 BUG_ON(scsi_prot_sg_count(SCpnt) == 0);
1920 paddr = kmap_atomic(sg_page(psgl)) + psgl->offset;
1923 /* For each data page */
1924 scsi_for_each_sg(SCpnt, dsgl, scsi_sg_count(SCpnt), i) {
1925 daddr = kmap_atomic(sg_page(dsgl)) + dsgl->offset;
1927 /* For each sector-sized chunk in data page */
1928 for (j = 0 ; j < dsgl->length ; j += scsi_debug_sector_size) {
1930 /* If we're at the end of the current
1931 * protection page advance to the next one
1933 if (ppage_offset >= psgl->length) {
1934 kunmap_atomic(paddr);
1935 psgl = sg_next(psgl);
1936 BUG_ON(psgl == NULL);
1937 paddr = kmap_atomic(sg_page(psgl))
1942 sdt = paddr + ppage_offset;
1944 switch (scsi_debug_guard) {
1946 csum = ip_compute_csum(daddr,
1947 scsi_debug_sector_size);
1950 csum = cpu_to_be16(crc_t10dif(daddr,
1951 scsi_debug_sector_size));
1959 if (sdt->guard_tag != csum) {
1961 "%s: GUARD check failed on sector %lu " \
1962 "rcvd 0x%04x, calculated 0x%04x\n",
1963 __func__, (unsigned long)sector,
1964 be16_to_cpu(sdt->guard_tag),
1967 dump_sector(daddr, scsi_debug_sector_size);
1971 if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION &&
1972 be32_to_cpu(sdt->ref_tag)
1973 != (start_sec & 0xffffffff)) {
1975 "%s: REF check failed on sector %lu\n",
1976 __func__, (unsigned long)sector);
1978 dump_sector(daddr, scsi_debug_sector_size);
1982 if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
1983 be32_to_cpu(sdt->ref_tag) != ei_lba) {
1985 "%s: REF check failed on sector %lu\n",
1986 __func__, (unsigned long)sector);
1988 dump_sector(daddr, scsi_debug_sector_size);
1992 /* Would be great to copy this in bigger
1993 * chunks. However, for the sake of
1994 * correctness we need to verify each sector
1995 * before writing it to "stable" storage
1997 memcpy(dif_storep + dif_offset(sector), sdt, 8);
2001 if (sector == sdebug_store_sectors)
2002 sector = 0; /* Force wrap */
2006 daddr += scsi_debug_sector_size;
2007 ppage_offset += sizeof(struct sd_dif_tuple);
2010 kunmap_atomic(daddr);
2013 kunmap_atomic(paddr);
2021 kunmap_atomic(daddr);
2022 kunmap_atomic(paddr);
2026 static unsigned long lba_to_map_index(sector_t lba)
2028 if (scsi_debug_unmap_alignment) {
2029 lba += scsi_debug_unmap_granularity -
2030 scsi_debug_unmap_alignment;
2032 do_div(lba, scsi_debug_unmap_granularity);
2037 static sector_t map_index_to_lba(unsigned long index)
2039 return index * scsi_debug_unmap_granularity -
2040 scsi_debug_unmap_alignment;
2043 static unsigned int map_state(sector_t lba, unsigned int *num)
2046 unsigned int mapped;
2047 unsigned long index;
2050 index = lba_to_map_index(lba);
2051 mapped = test_bit(index, map_storep);
2054 next = find_next_zero_bit(map_storep, map_size, index);
2056 next = find_next_bit(map_storep, map_size, index);
2058 end = min_t(sector_t, sdebug_store_sectors, map_index_to_lba(next));
2064 static void map_region(sector_t lba, unsigned int len)
2066 sector_t end = lba + len;
2069 unsigned long index = lba_to_map_index(lba);
2071 if (index < map_size)
2072 set_bit(index, map_storep);
2074 lba = map_index_to_lba(index + 1);
2078 static void unmap_region(sector_t lba, unsigned int len)
2080 sector_t end = lba + len;
2083 unsigned long index = lba_to_map_index(lba);
2085 if (lba == map_index_to_lba(index) &&
2086 lba + scsi_debug_unmap_granularity <= end &&
2088 clear_bit(index, map_storep);
2089 if (scsi_debug_lbprz) {
2090 memset(fake_storep +
2091 lba * scsi_debug_sector_size, 0,
2092 scsi_debug_sector_size *
2093 scsi_debug_unmap_granularity);
2096 lba = map_index_to_lba(index + 1);
2100 static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba,
2101 unsigned int num, struct sdebug_dev_info *devip,
2104 unsigned long iflags;
2107 ret = check_device_access_params(devip, lba, num);
2112 if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) {
2113 int prot_ret = prot_verify_write(SCpnt, lba, num, ei_lba);
2116 mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, prot_ret);
2117 return illegal_condition_result;
2121 write_lock_irqsave(&atomic_rw, iflags);
2122 ret = do_device_access(SCpnt, devip, lba, num, 1);
2123 if (scsi_debug_lbp())
2124 map_region(lba, num);
2125 write_unlock_irqrestore(&atomic_rw, iflags);
2127 return (DID_ERROR << 16);
2128 else if ((ret < (num * scsi_debug_sector_size)) &&
2129 (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts))
2130 printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, "
2131 " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret);
2136 static int resp_write_same(struct scsi_cmnd *scmd, unsigned long long lba,
2137 unsigned int num, struct sdebug_dev_info *devip,
2138 u32 ei_lba, unsigned int unmap)
2140 unsigned long iflags;
2141 unsigned long long i;
2144 ret = check_device_access_params(devip, lba, num);
2148 if (num > scsi_debug_write_same_length) {
2149 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
2151 return check_condition_result;
2154 write_lock_irqsave(&atomic_rw, iflags);
2156 if (unmap && scsi_debug_lbp()) {
2157 unmap_region(lba, num);
2161 /* Else fetch one logical block */
2162 ret = fetch_to_dev_buffer(scmd,
2163 fake_storep + (lba * scsi_debug_sector_size),
2164 scsi_debug_sector_size);
2167 write_unlock_irqrestore(&atomic_rw, iflags);
2168 return (DID_ERROR << 16);
2169 } else if ((ret < (num * scsi_debug_sector_size)) &&
2170 (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts))
2171 printk(KERN_INFO "scsi_debug: write same: cdb indicated=%u, "
2172 " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret);
2174 /* Copy first sector to remaining blocks */
2175 for (i = 1 ; i < num ; i++)
2176 memcpy(fake_storep + ((lba + i) * scsi_debug_sector_size),
2177 fake_storep + (lba * scsi_debug_sector_size),
2178 scsi_debug_sector_size);
2180 if (scsi_debug_lbp())
2181 map_region(lba, num);
2183 write_unlock_irqrestore(&atomic_rw, iflags);
2188 struct unmap_block_desc {
2194 static int resp_unmap(struct scsi_cmnd * scmd, struct sdebug_dev_info * devip)
2197 struct unmap_block_desc *desc;
2198 unsigned int i, payload_len, descriptors;
2201 ret = check_readiness(scmd, 1, devip);
2205 payload_len = get_unaligned_be16(&scmd->cmnd[7]);
2206 BUG_ON(scsi_bufflen(scmd) != payload_len);
2208 descriptors = (payload_len - 8) / 16;
2210 buf = kmalloc(scsi_bufflen(scmd), GFP_ATOMIC);
2212 return check_condition_result;
2214 scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd));
2216 BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2);
2217 BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16);
2219 desc = (void *)&buf[8];
2221 for (i = 0 ; i < descriptors ; i++) {
2222 unsigned long long lba = get_unaligned_be64(&desc[i].lba);
2223 unsigned int num = get_unaligned_be32(&desc[i].blocks);
2225 ret = check_device_access_params(devip, lba, num);
2229 unmap_region(lba, num);
2240 #define SDEBUG_GET_LBA_STATUS_LEN 32
2242 static int resp_get_lba_status(struct scsi_cmnd * scmd,
2243 struct sdebug_dev_info * devip)
2245 unsigned long long lba;
2246 unsigned int alloc_len, mapped, num;
2247 unsigned char arr[SDEBUG_GET_LBA_STATUS_LEN];
2250 ret = check_readiness(scmd, 1, devip);
2254 lba = get_unaligned_be64(&scmd->cmnd[2]);
2255 alloc_len = get_unaligned_be32(&scmd->cmnd[10]);
2260 ret = check_device_access_params(devip, lba, 1);
2264 mapped = map_state(lba, &num);
2266 memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN);
2267 put_unaligned_be32(20, &arr[0]); /* Parameter Data Length */
2268 put_unaligned_be64(lba, &arr[8]); /* LBA */
2269 put_unaligned_be32(num, &arr[16]); /* Number of blocks */
2270 arr[20] = !mapped; /* mapped = 0, unmapped = 1 */
2272 return fill_from_dev_buffer(scmd, arr, SDEBUG_GET_LBA_STATUS_LEN);
2275 #define SDEBUG_RLUN_ARR_SZ 256
2277 static int resp_report_luns(struct scsi_cmnd * scp,
2278 struct sdebug_dev_info * devip)
2280 unsigned int alloc_len;
2281 int lun_cnt, i, upper, num, n, wlun, lun;
2282 unsigned char *cmd = (unsigned char *)scp->cmnd;
2283 int select_report = (int)cmd[2];
2284 struct scsi_lun *one_lun;
2285 unsigned char arr[SDEBUG_RLUN_ARR_SZ];
2286 unsigned char * max_addr;
2288 alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24);
2289 if ((alloc_len < 4) || (select_report > 2)) {
2290 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB,
2292 return check_condition_result;
2294 /* can produce response with up to 16k luns (lun 0 to lun 16383) */
2295 memset(arr, 0, SDEBUG_RLUN_ARR_SZ);
2296 lun_cnt = scsi_debug_max_luns;
2297 if (1 == select_report)
2299 else if (scsi_debug_no_lun_0 && (lun_cnt > 0))
2301 wlun = (select_report > 0) ? 1 : 0;
2302 num = lun_cnt + wlun;
2303 arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff;
2304 arr[3] = (sizeof(struct scsi_lun) * num) & 0xff;
2305 n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) /
2306 sizeof(struct scsi_lun)), num);
2311 one_lun = (struct scsi_lun *) &arr[8];
2312 max_addr = arr + SDEBUG_RLUN_ARR_SZ;
2313 for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0);
2314 ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr));
2316 upper = (lun >> 8) & 0x3f;
2318 one_lun[i].scsi_lun[0] =
2319 (upper | (SAM2_LUN_ADDRESS_METHOD << 6));
2320 one_lun[i].scsi_lun[1] = lun & 0xff;
2323 one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff;
2324 one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff;
2327 alloc_len = (unsigned char *)(one_lun + i) - arr;
2328 return fill_from_dev_buffer(scp, arr,
2329 min((int)alloc_len, SDEBUG_RLUN_ARR_SZ));
2332 static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba,
2333 unsigned int num, struct sdebug_dev_info *devip)
2336 unsigned char *kaddr, *buf;
2337 unsigned int offset;
2338 struct scatterlist *sg;
2339 struct scsi_data_buffer *sdb = scsi_in(scp);
2341 /* better not to use temporary buffer. */
2342 buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC);
2346 scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp));
2349 for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) {
2350 kaddr = (unsigned char *)kmap_atomic(sg_page(sg));
2354 for (j = 0; j < sg->length; j++)
2355 *(kaddr + sg->offset + j) ^= *(buf + offset + j);
2357 offset += sg->length;
2358 kunmap_atomic(kaddr);
2367 /* When timer goes off this function is called. */
2368 static void timer_intr_handler(unsigned long indx)
2370 struct sdebug_queued_cmd * sqcp;
2371 unsigned long iflags;
2373 if (indx >= scsi_debug_max_queue) {
2374 printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too "
2378 spin_lock_irqsave(&queued_arr_lock, iflags);
2379 sqcp = &queued_arr[(int)indx];
2380 if (! sqcp->in_use) {
2381 printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected "
2383 spin_unlock_irqrestore(&queued_arr_lock, iflags);
2387 if (sqcp->done_funct) {
2388 sqcp->a_cmnd->result = sqcp->scsi_result;
2389 sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */
2391 sqcp->done_funct = NULL;
2392 spin_unlock_irqrestore(&queued_arr_lock, iflags);
2396 static struct sdebug_dev_info *
2397 sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags)
2399 struct sdebug_dev_info *devip;
2401 devip = kzalloc(sizeof(*devip), flags);
2403 devip->sdbg_host = sdbg_host;
2404 list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list);
2409 static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev)
2411 struct sdebug_host_info * sdbg_host;
2412 struct sdebug_dev_info * open_devip = NULL;
2413 struct sdebug_dev_info * devip =
2414 (struct sdebug_dev_info *)sdev->hostdata;
2418 sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host);
2420 printk(KERN_ERR "Host info NULL\n");
2423 list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) {
2424 if ((devip->used) && (devip->channel == sdev->channel) &&
2425 (devip->target == sdev->id) &&
2426 (devip->lun == sdev->lun))
2429 if ((!devip->used) && (!open_devip))
2433 if (!open_devip) { /* try and make a new one */
2434 open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC);
2436 printk(KERN_ERR "%s: out of memory at line %d\n",
2437 __func__, __LINE__);
2442 open_devip->channel = sdev->channel;
2443 open_devip->target = sdev->id;
2444 open_devip->lun = sdev->lun;
2445 open_devip->sdbg_host = sdbg_host;
2446 open_devip->reset = 1;
2447 open_devip->used = 1;
2448 memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN);
2449 if (scsi_debug_dsense)
2450 open_devip->sense_buff[0] = 0x72;
2452 open_devip->sense_buff[0] = 0x70;
2453 open_devip->sense_buff[7] = 0xa;
2455 if (sdev->lun == SAM2_WLUN_REPORT_LUNS)
2456 open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff;
2461 static int scsi_debug_slave_alloc(struct scsi_device *sdp)
2463 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2464 printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n",
2465 sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
2466 queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue);
2470 static int scsi_debug_slave_configure(struct scsi_device *sdp)
2472 struct sdebug_dev_info *devip;
2474 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2475 printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n",
2476 sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
2477 if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN)
2478 sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN;
2479 devip = devInfoReg(sdp);
2481 return 1; /* no resources, will be marked offline */
2482 sdp->hostdata = devip;
2483 if (sdp->host->cmd_per_lun)
2484 scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING,
2485 sdp->host->cmd_per_lun);
2486 blk_queue_max_segment_size(sdp->request_queue, 256 * 1024);
2487 if (scsi_debug_no_uld)
2488 sdp->no_uld_attach = 1;
2492 static void scsi_debug_slave_destroy(struct scsi_device *sdp)
2494 struct sdebug_dev_info *devip =
2495 (struct sdebug_dev_info *)sdp->hostdata;
2497 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2498 printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n",
2499 sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
2501 /* make this slot available for re-use */
2503 sdp->hostdata = NULL;
2507 /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */
2508 static int stop_queued_cmnd(struct scsi_cmnd *cmnd)
2510 unsigned long iflags;
2512 struct sdebug_queued_cmd *sqcp;
2514 spin_lock_irqsave(&queued_arr_lock, iflags);
2515 for (k = 0; k < scsi_debug_max_queue; ++k) {
2516 sqcp = &queued_arr[k];
2517 if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) {
2518 del_timer_sync(&sqcp->cmnd_timer);
2520 sqcp->a_cmnd = NULL;
2524 spin_unlock_irqrestore(&queued_arr_lock, iflags);
2525 return (k < scsi_debug_max_queue) ? 1 : 0;
2528 /* Deletes (stops) timers of all queued commands */
2529 static void stop_all_queued(void)
2531 unsigned long iflags;
2533 struct sdebug_queued_cmd *sqcp;
2535 spin_lock_irqsave(&queued_arr_lock, iflags);
2536 for (k = 0; k < scsi_debug_max_queue; ++k) {
2537 sqcp = &queued_arr[k];
2538 if (sqcp->in_use && sqcp->a_cmnd) {
2539 del_timer_sync(&sqcp->cmnd_timer);
2541 sqcp->a_cmnd = NULL;
2544 spin_unlock_irqrestore(&queued_arr_lock, iflags);
2547 static int scsi_debug_abort(struct scsi_cmnd * SCpnt)
2549 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2550 printk(KERN_INFO "scsi_debug: abort\n");
2552 stop_queued_cmnd(SCpnt);
2556 static int scsi_debug_biosparam(struct scsi_device *sdev,
2557 struct block_device * bdev, sector_t capacity, int *info)
2562 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2563 printk(KERN_INFO "scsi_debug: biosparam\n");
2564 buf = scsi_bios_ptable(bdev);
2566 res = scsi_partsize(buf, capacity,
2567 &info[2], &info[0], &info[1]);
2572 info[0] = sdebug_heads;
2573 info[1] = sdebug_sectors_per;
2574 info[2] = sdebug_cylinders_per;
2578 static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt)
2580 struct sdebug_dev_info * devip;
2582 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2583 printk(KERN_INFO "scsi_debug: device_reset\n");
2586 devip = devInfoReg(SCpnt->device);
2593 static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt)
2595 struct sdebug_host_info *sdbg_host;
2596 struct sdebug_dev_info * dev_info;
2597 struct scsi_device * sdp;
2598 struct Scsi_Host * hp;
2600 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2601 printk(KERN_INFO "scsi_debug: bus_reset\n");
2603 if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) {
2604 sdbg_host = *(struct sdebug_host_info **)shost_priv(hp);
2606 list_for_each_entry(dev_info,
2607 &sdbg_host->dev_info_list,
2609 dev_info->reset = 1;
2615 static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt)
2617 struct sdebug_host_info * sdbg_host;
2618 struct sdebug_dev_info * dev_info;
2620 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
2621 printk(KERN_INFO "scsi_debug: host_reset\n");
2623 spin_lock(&sdebug_host_list_lock);
2624 list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) {
2625 list_for_each_entry(dev_info, &sdbg_host->dev_info_list,
2627 dev_info->reset = 1;
2629 spin_unlock(&sdebug_host_list_lock);
2634 /* Initializes timers in queued array */
2635 static void __init init_all_queued(void)
2637 unsigned long iflags;
2639 struct sdebug_queued_cmd * sqcp;
2641 spin_lock_irqsave(&queued_arr_lock, iflags);
2642 for (k = 0; k < scsi_debug_max_queue; ++k) {
2643 sqcp = &queued_arr[k];
2644 init_timer(&sqcp->cmnd_timer);
2646 sqcp->a_cmnd = NULL;
2648 spin_unlock_irqrestore(&queued_arr_lock, iflags);
2651 static void __init sdebug_build_parts(unsigned char *ramp,
2652 unsigned long store_size)
2654 struct partition * pp;
2655 int starts[SDEBUG_MAX_PARTS + 2];
2656 int sectors_per_part, num_sectors, k;
2657 int heads_by_sects, start_sec, end_sec;
2659 /* assume partition table already zeroed */
2660 if ((scsi_debug_num_parts < 1) || (store_size < 1048576))
2662 if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) {
2663 scsi_debug_num_parts = SDEBUG_MAX_PARTS;
2664 printk(KERN_WARNING "scsi_debug:build_parts: reducing "
2665 "partitions to %d\n", SDEBUG_MAX_PARTS);
2667 num_sectors = (int)sdebug_store_sectors;
2668 sectors_per_part = (num_sectors - sdebug_sectors_per)
2669 / scsi_debug_num_parts;
2670 heads_by_sects = sdebug_heads * sdebug_sectors_per;
2671 starts[0] = sdebug_sectors_per;
2672 for (k = 1; k < scsi_debug_num_parts; ++k)
2673 starts[k] = ((k * sectors_per_part) / heads_by_sects)
2675 starts[scsi_debug_num_parts] = num_sectors;
2676 starts[scsi_debug_num_parts + 1] = 0;
2678 ramp[510] = 0x55; /* magic partition markings */
2680 pp = (struct partition *)(ramp + 0x1be);
2681 for (k = 0; starts[k + 1]; ++k, ++pp) {
2682 start_sec = starts[k];
2683 end_sec = starts[k + 1] - 1;
2686 pp->cyl = start_sec / heads_by_sects;
2687 pp->head = (start_sec - (pp->cyl * heads_by_sects))
2688 / sdebug_sectors_per;
2689 pp->sector = (start_sec % sdebug_sectors_per) + 1;
2691 pp->end_cyl = end_sec / heads_by_sects;
2692 pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects))
2693 / sdebug_sectors_per;
2694 pp->end_sector = (end_sec % sdebug_sectors_per) + 1;
2696 pp->start_sect = start_sec;
2697 pp->nr_sects = end_sec - start_sec + 1;
2698 pp->sys_ind = 0x83; /* plain Linux partition */
2702 static int schedule_resp(struct scsi_cmnd * cmnd,
2703 struct sdebug_dev_info * devip,
2704 done_funct_t done, int scsi_result, int delta_jiff)
2706 if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) {
2708 struct scsi_device * sdp = cmnd->device;
2710 printk(KERN_INFO "scsi_debug: <%u %u %u %u> "
2711 "non-zero result=0x%x\n", sdp->host->host_no,
2712 sdp->channel, sdp->id, sdp->lun, scsi_result);
2715 if (cmnd && devip) {
2716 /* simulate autosense by this driver */
2717 if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff))
2718 memcpy(cmnd->sense_buffer, devip->sense_buff,
2719 (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ?
2720 SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE);
2722 if (delta_jiff <= 0) {
2724 cmnd->result = scsi_result;
2729 unsigned long iflags;
2731 struct sdebug_queued_cmd * sqcp = NULL;
2733 spin_lock_irqsave(&queued_arr_lock, iflags);
2734 for (k = 0; k < scsi_debug_max_queue; ++k) {
2735 sqcp = &queued_arr[k];
2739 if (k >= scsi_debug_max_queue) {
2740 spin_unlock_irqrestore(&queued_arr_lock, iflags);
2741 printk(KERN_WARNING "scsi_debug: can_queue exceeded\n");
2742 return 1; /* report busy to mid level */
2745 sqcp->a_cmnd = cmnd;
2746 sqcp->scsi_result = scsi_result;
2747 sqcp->done_funct = done;
2748 sqcp->cmnd_timer.function = timer_intr_handler;
2749 sqcp->cmnd_timer.data = k;
2750 sqcp->cmnd_timer.expires = jiffies + delta_jiff;
2751 add_timer(&sqcp->cmnd_timer);
2752 spin_unlock_irqrestore(&queued_arr_lock, iflags);
2758 /* Note: The following macros create attribute files in the
2759 /sys/module/scsi_debug/parameters directory. Unfortunately this
2760 driver is unaware of a change and cannot trigger auxiliary actions
2761 as it can when the corresponding attribute in the
2762 /sys/bus/pseudo/drivers/scsi_debug directory is changed.
2764 module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR);
2765 module_param_named(ato, scsi_debug_ato, int, S_IRUGO);
2766 module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR);
2767 module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO);
2768 module_param_named(dif, scsi_debug_dif, int, S_IRUGO);
2769 module_param_named(dix, scsi_debug_dix, int, S_IRUGO);
2770 module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR);
2771 module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR);
2772 module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR);
2773 module_param_named(guard, scsi_debug_guard, int, S_IRUGO);
2774 module_param_named(lbpu, scsi_debug_lbpu, int, S_IRUGO);
2775 module_param_named(lbpws, scsi_debug_lbpws, int, S_IRUGO);
2776 module_param_named(lbpws10, scsi_debug_lbpws10, int, S_IRUGO);
2777 module_param_named(lbprz, scsi_debug_lbprz, int, S_IRUGO);
2778 module_param_named(lowest_aligned, scsi_debug_lowest_aligned, int, S_IRUGO);
2779 module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR);
2780 module_param_named(max_queue, scsi_debug_max_queue, int, S_IRUGO | S_IWUSR);
2781 module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR);
2782 module_param_named(no_uld, scsi_debug_no_uld, int, S_IRUGO);
2783 module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO);
2784 module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR);
2785 module_param_named(opt_blks, scsi_debug_opt_blks, int, S_IRUGO);
2786 module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR);
2787 module_param_named(physblk_exp, scsi_debug_physblk_exp, int, S_IRUGO);
2788 module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR);
2789 module_param_named(removable, scsi_debug_removable, bool, S_IRUGO | S_IWUSR);
2790 module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO);
2791 module_param_named(sector_size, scsi_debug_sector_size, int, S_IRUGO);
2792 module_param_named(unmap_alignment, scsi_debug_unmap_alignment, int, S_IRUGO);
2793 module_param_named(unmap_granularity, scsi_debug_unmap_granularity, int, S_IRUGO);
2794 module_param_named(unmap_max_blocks, scsi_debug_unmap_max_blocks, int, S_IRUGO);
2795 module_param_named(unmap_max_desc, scsi_debug_unmap_max_desc, int, S_IRUGO);
2796 module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR);
2797 module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int,
2799 module_param_named(write_same_length, scsi_debug_write_same_length, int,
2802 MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert");
2803 MODULE_DESCRIPTION("SCSI debug adapter driver");
2804 MODULE_LICENSE("GPL");
2805 MODULE_VERSION(SCSI_DEBUG_VERSION);
2807 MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)");
2808 MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)");
2809 MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)");
2810 MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)");
2811 MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)");
2812 MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)");
2813 MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)");
2814 MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)");
2815 MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)");
2816 MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)");
2817 MODULE_PARM_DESC(lbpu, "enable LBP, support UNMAP command (def=0)");
2818 MODULE_PARM_DESC(lbpws, "enable LBP, support WRITE SAME(16) with UNMAP bit (def=0)");
2819 MODULE_PARM_DESC(lbpws10, "enable LBP, support WRITE SAME(10) with UNMAP bit (def=0)");
2820 MODULE_PARM_DESC(lbprz, "unmapped blocks return 0 on read (def=1)");
2821 MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)");
2822 MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)");
2823 MODULE_PARM_DESC(max_queue, "max number of queued commands (1 to 255(def))");
2824 MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)");
2825 MODULE_PARM_DESC(no_uld, "stop ULD (e.g. sd driver) attaching (def=0))");
2826 MODULE_PARM_DESC(num_parts, "number of partitions(def=0)");
2827 MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)");
2828 MODULE_PARM_DESC(opt_blks, "optimal transfer length in block (def=64)");
2829 MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)");
2830 MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)");
2831 MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])");
2832 MODULE_PARM_DESC(removable, "claim to have removable media (def=0)");
2833 MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])");
2834 MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)");
2835 MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)");
2836 MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=1)");
2837 MODULE_PARM_DESC(unmap_max_blocks, "max # of blocks can be unmapped in one cmd (def=0xffffffff)");
2838 MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=256)");
2839 MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)");
2840 MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)");
2841 MODULE_PARM_DESC(write_same_length, "Maximum blocks per WRITE SAME cmd (def=0xffff)");
2843 static char sdebug_info[256];
2845 static const char * scsi_debug_info(struct Scsi_Host * shp)
2847 sprintf(sdebug_info, "scsi_debug, version %s [%s], "
2848 "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION,
2849 scsi_debug_version_date, scsi_debug_dev_size_mb,
2854 /* scsi_debug_proc_info
2855 * Used if the driver currently has no own support for /proc/scsi
2857 static int scsi_debug_write_info(struct Scsi_Host *host, char *buffer, int length)
2861 int minLen = length > 15 ? 15 : length;
2863 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
2865 memcpy(arr, buffer, minLen);
2867 if (1 != sscanf(arr, "%d", &opts))
2869 scsi_debug_opts = opts;
2870 if (scsi_debug_every_nth != 0)
2871 scsi_debug_cmnd_count = 0;
2875 static int scsi_debug_show_info(struct seq_file *m, struct Scsi_Host *host)
2877 seq_printf(m, "scsi_debug adapter driver, version "
2879 "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, "
2880 "every_nth=%d(curr:%d)\n"
2881 "delay=%d, max_luns=%d, scsi_level=%d\n"
2882 "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n"
2883 "number of aborts=%d, device_reset=%d, bus_resets=%d, "
2884 "host_resets=%d\ndix_reads=%d dix_writes=%d dif_errors=%d\n",
2885 SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts,
2886 scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth,
2887 scsi_debug_cmnd_count, scsi_debug_delay,
2888 scsi_debug_max_luns, scsi_debug_scsi_level,
2889 scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads,
2890 sdebug_sectors_per, num_aborts, num_dev_resets, num_bus_resets,
2891 num_host_resets, dix_reads, dix_writes, dif_errors);
2895 static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf)
2897 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay);
2900 static ssize_t sdebug_delay_store(struct device_driver * ddp,
2901 const char * buf, size_t count)
2906 if (1 == sscanf(buf, "%10s", work)) {
2907 if ((1 == sscanf(work, "%d", &delay)) && (delay >= 0)) {
2908 scsi_debug_delay = delay;
2914 DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show,
2915 sdebug_delay_store);
2917 static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf)
2919 return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts);
2922 static ssize_t sdebug_opts_store(struct device_driver * ddp,
2923 const char * buf, size_t count)
2928 if (1 == sscanf(buf, "%10s", work)) {
2929 if (0 == strnicmp(work,"0x", 2)) {
2930 if (1 == sscanf(&work[2], "%x", &opts))
2933 if (1 == sscanf(work, "%d", &opts))
2939 scsi_debug_opts = opts;
2940 scsi_debug_cmnd_count = 0;
2943 DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show,
2946 static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf)
2948 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype);
2950 static ssize_t sdebug_ptype_store(struct device_driver * ddp,
2951 const char * buf, size_t count)
2955 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
2956 scsi_debug_ptype = n;
2961 DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store);
2963 static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf)
2965 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense);
2967 static ssize_t sdebug_dsense_store(struct device_driver * ddp,
2968 const char * buf, size_t count)
2972 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
2973 scsi_debug_dsense = n;
2978 DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show,
2979 sdebug_dsense_store);
2981 static ssize_t sdebug_fake_rw_show(struct device_driver * ddp, char * buf)
2983 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw);
2985 static ssize_t sdebug_fake_rw_store(struct device_driver * ddp,
2986 const char * buf, size_t count)
2990 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
2991 scsi_debug_fake_rw = n;
2996 DRIVER_ATTR(fake_rw, S_IRUGO | S_IWUSR, sdebug_fake_rw_show,
2997 sdebug_fake_rw_store);
2999 static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf)
3001 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0);
3003 static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp,
3004 const char * buf, size_t count)
3008 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
3009 scsi_debug_no_lun_0 = n;
3014 DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show,
3015 sdebug_no_lun_0_store);
3017 static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf)
3019 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts);
3021 static ssize_t sdebug_num_tgts_store(struct device_driver * ddp,
3022 const char * buf, size_t count)
3026 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
3027 scsi_debug_num_tgts = n;
3028 sdebug_max_tgts_luns();
3033 DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show,
3034 sdebug_num_tgts_store);
3036 static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf)
3038 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb);
3040 DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL);
3042 static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf)
3044 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts);
3046 DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL);
3048 static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf)
3050 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth);
3052 static ssize_t sdebug_every_nth_store(struct device_driver * ddp,
3053 const char * buf, size_t count)
3057 if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) {
3058 scsi_debug_every_nth = nth;
3059 scsi_debug_cmnd_count = 0;
3064 DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show,
3065 sdebug_every_nth_store);
3067 static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf)
3069 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns);
3071 static ssize_t sdebug_max_luns_store(struct device_driver * ddp,
3072 const char * buf, size_t count)
3076 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
3077 scsi_debug_max_luns = n;
3078 sdebug_max_tgts_luns();
3083 DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show,
3084 sdebug_max_luns_store);
3086 static ssize_t sdebug_max_queue_show(struct device_driver * ddp, char * buf)
3088 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_queue);
3090 static ssize_t sdebug_max_queue_store(struct device_driver * ddp,
3091 const char * buf, size_t count)
3095 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n > 0) &&
3096 (n <= SCSI_DEBUG_CANQUEUE)) {
3097 scsi_debug_max_queue = n;
3102 DRIVER_ATTR(max_queue, S_IRUGO | S_IWUSR, sdebug_max_queue_show,
3103 sdebug_max_queue_store);
3105 static ssize_t sdebug_no_uld_show(struct device_driver * ddp, char * buf)
3107 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_uld);
3109 DRIVER_ATTR(no_uld, S_IRUGO, sdebug_no_uld_show, NULL);
3111 static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf)
3113 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level);
3115 DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL);
3117 static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf)
3119 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb);
3121 static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp,
3122 const char * buf, size_t count)
3126 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
3127 scsi_debug_virtual_gb = n;
3129 sdebug_capacity = get_sdebug_capacity();
3135 DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show,
3136 sdebug_virtual_gb_store);
3138 static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf)
3140 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host);
3143 static ssize_t sdebug_add_host_store(struct device_driver * ddp,
3144 const char * buf, size_t count)
3148 if (sscanf(buf, "%d", &delta_hosts) != 1)
3150 if (delta_hosts > 0) {
3152 sdebug_add_adapter();
3153 } while (--delta_hosts);
3154 } else if (delta_hosts < 0) {
3156 sdebug_remove_adapter();
3157 } while (++delta_hosts);
3161 DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show,
3162 sdebug_add_host_store);
3164 static ssize_t sdebug_vpd_use_hostno_show(struct device_driver * ddp,
3167 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno);
3169 static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp,
3170 const char * buf, size_t count)
3174 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
3175 scsi_debug_vpd_use_hostno = n;
3180 DRIVER_ATTR(vpd_use_hostno, S_IRUGO | S_IWUSR, sdebug_vpd_use_hostno_show,
3181 sdebug_vpd_use_hostno_store);
3183 static ssize_t sdebug_sector_size_show(struct device_driver * ddp, char * buf)
3185 return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_sector_size);
3187 DRIVER_ATTR(sector_size, S_IRUGO, sdebug_sector_size_show, NULL);
3189 static ssize_t sdebug_dix_show(struct device_driver *ddp, char *buf)
3191 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dix);
3193 DRIVER_ATTR(dix, S_IRUGO, sdebug_dix_show, NULL);
3195 static ssize_t sdebug_dif_show(struct device_driver *ddp, char *buf)
3197 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dif);
3199 DRIVER_ATTR(dif, S_IRUGO, sdebug_dif_show, NULL);
3201 static ssize_t sdebug_guard_show(struct device_driver *ddp, char *buf)
3203 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_guard);
3205 DRIVER_ATTR(guard, S_IRUGO, sdebug_guard_show, NULL);
3207 static ssize_t sdebug_ato_show(struct device_driver *ddp, char *buf)
3209 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ato);
3211 DRIVER_ATTR(ato, S_IRUGO, sdebug_ato_show, NULL);
3213 static ssize_t sdebug_map_show(struct device_driver *ddp, char *buf)
3217 if (!scsi_debug_lbp())
3218 return scnprintf(buf, PAGE_SIZE, "0-%u\n",
3219 sdebug_store_sectors);
3221 count = bitmap_scnlistprintf(buf, PAGE_SIZE, map_storep, map_size);
3223 buf[count++] = '\n';
3228 DRIVER_ATTR(map, S_IRUGO, sdebug_map_show, NULL);
3230 static ssize_t sdebug_removable_show(struct device_driver *ddp,
3233 return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_removable ? 1 : 0);
3235 static ssize_t sdebug_removable_store(struct device_driver *ddp,
3236 const char *buf, size_t count)
3240 if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) {
3241 scsi_debug_removable = (n > 0);
3246 DRIVER_ATTR(removable, S_IRUGO | S_IWUSR, sdebug_removable_show,
3247 sdebug_removable_store);
3250 /* Note: The following function creates attribute files in the
3251 /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these
3252 files (over those found in the /sys/module/scsi_debug/parameters
3253 directory) is that auxiliary actions can be triggered when an attribute
3254 is changed. For example see: sdebug_add_host_store() above.
3256 static int do_create_driverfs_files(void)
3260 ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host);
3261 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay);
3262 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb);
3263 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense);
3264 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth);
3265 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_fake_rw);
3266 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns);
3267 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_queue);
3268 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0);
3269 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_uld);
3270 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts);
3271 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts);
3272 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype);
3273 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts);
3274 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_removable);
3275 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level);
3276 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb);
3277 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno);
3278 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_sector_size);
3279 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dix);
3280 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dif);
3281 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_guard);
3282 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ato);
3283 ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_map);
3287 static void do_remove_driverfs_files(void)
3289 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_map);
3290 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ato);
3291 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_guard);
3292 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dif);
3293 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dix);
3294 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_sector_size);
3295 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno);
3296 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb);
3297 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level);
3298 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts);
3299 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype);
3300 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_removable);
3301 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts);
3302 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts);
3303 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_uld);
3304 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0);
3305 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_queue);
3306 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns);
3307 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_fake_rw);
3308 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth);
3309 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense);
3310 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb);
3311 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay);
3312 driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host);
3315 struct device *pseudo_primary;
3317 static int __init scsi_debug_init(void)
3324 switch (scsi_debug_sector_size) {
3331 printk(KERN_ERR "scsi_debug_init: invalid sector_size %d\n",
3332 scsi_debug_sector_size);
3336 switch (scsi_debug_dif) {
3338 case SD_DIF_TYPE0_PROTECTION:
3339 case SD_DIF_TYPE1_PROTECTION:
3340 case SD_DIF_TYPE2_PROTECTION:
3341 case SD_DIF_TYPE3_PROTECTION:
3345 printk(KERN_ERR "scsi_debug_init: dif must be 0, 1, 2 or 3\n");
3349 if (scsi_debug_guard > 1) {
3350 printk(KERN_ERR "scsi_debug_init: guard must be 0 or 1\n");
3354 if (scsi_debug_ato > 1) {
3355 printk(KERN_ERR "scsi_debug_init: ato must be 0 or 1\n");
3359 if (scsi_debug_physblk_exp > 15) {
3360 printk(KERN_ERR "scsi_debug_init: invalid physblk_exp %u\n",
3361 scsi_debug_physblk_exp);
3365 if (scsi_debug_lowest_aligned > 0x3fff) {
3366 printk(KERN_ERR "scsi_debug_init: lowest_aligned too big: %u\n",
3367 scsi_debug_lowest_aligned);
3371 if (scsi_debug_dev_size_mb < 1)
3372 scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */
3373 sz = (unsigned long)scsi_debug_dev_size_mb * 1048576;
3374 sdebug_store_sectors = sz / scsi_debug_sector_size;
3375 sdebug_capacity = get_sdebug_capacity();
3377 /* play around with geometry, don't waste too much on track 0 */
3379 sdebug_sectors_per = 32;
3380 if (scsi_debug_dev_size_mb >= 16)
3382 else if (scsi_debug_dev_size_mb >= 256)
3384 sdebug_cylinders_per = (unsigned long)sdebug_capacity /
3385 (sdebug_sectors_per * sdebug_heads);
3386 if (sdebug_cylinders_per >= 1024) {
3387 /* other LLDs do this; implies >= 1GB ram disk ... */
3389 sdebug_sectors_per = 63;
3390 sdebug_cylinders_per = (unsigned long)sdebug_capacity /
3391 (sdebug_sectors_per * sdebug_heads);
3394 fake_storep = vmalloc(sz);
3395 if (NULL == fake_storep) {
3396 printk(KERN_ERR "scsi_debug_init: out of memory, 1\n");
3399 memset(fake_storep, 0, sz);
3400 if (scsi_debug_num_parts > 0)
3401 sdebug_build_parts(fake_storep, sz);
3403 if (scsi_debug_dif) {
3406 dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple);
3407 dif_storep = vmalloc(dif_size);
3409 printk(KERN_ERR "scsi_debug_init: dif_storep %u bytes @ %p\n",
3410 dif_size, dif_storep);
3412 if (dif_storep == NULL) {
3413 printk(KERN_ERR "scsi_debug_init: out of mem. (DIX)\n");
3418 memset(dif_storep, 0xff, dif_size);
3421 /* Logical Block Provisioning */
3422 if (scsi_debug_lbp()) {
3423 scsi_debug_unmap_max_blocks =
3424 clamp(scsi_debug_unmap_max_blocks, 0U, 0xffffffffU);
3426 scsi_debug_unmap_max_desc =
3427 clamp(scsi_debug_unmap_max_desc, 0U, 256U);
3429 scsi_debug_unmap_granularity =
3430 clamp(scsi_debug_unmap_granularity, 1U, 0xffffffffU);
3432 if (scsi_debug_unmap_alignment &&
3433 scsi_debug_unmap_granularity <=
3434 scsi_debug_unmap_alignment) {
3436 "%s: ERR: unmap_granularity <= unmap_alignment\n",
3441 map_size = lba_to_map_index(sdebug_store_sectors - 1) + 1;
3442 map_storep = vmalloc(BITS_TO_LONGS(map_size) * sizeof(long));
3444 printk(KERN_INFO "scsi_debug_init: %lu provisioning blocks\n",
3447 if (map_storep == NULL) {
3448 printk(KERN_ERR "scsi_debug_init: out of mem. (MAP)\n");
3453 bitmap_zero(map_storep, map_size);
3455 /* Map first 1KB for partition table */
3456 if (scsi_debug_num_parts)
3460 pseudo_primary = root_device_register("pseudo_0");
3461 if (IS_ERR(pseudo_primary)) {
3462 printk(KERN_WARNING "scsi_debug: root_device_register() error\n");
3463 ret = PTR_ERR(pseudo_primary);
3466 ret = bus_register(&pseudo_lld_bus);
3468 printk(KERN_WARNING "scsi_debug: bus_register error: %d\n",
3472 ret = driver_register(&sdebug_driverfs_driver);
3474 printk(KERN_WARNING "scsi_debug: driver_register error: %d\n",
3478 ret = do_create_driverfs_files();
3480 printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n",
3487 host_to_add = scsi_debug_add_host;
3488 scsi_debug_add_host = 0;
3490 for (k = 0; k < host_to_add; k++) {
3491 if (sdebug_add_adapter()) {
3492 printk(KERN_ERR "scsi_debug_init: "
3493 "sdebug_add_adapter failed k=%d\n", k);
3498 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) {
3499 printk(KERN_INFO "scsi_debug_init: built %d host(s)\n",
3500 scsi_debug_add_host);
3505 do_remove_driverfs_files();
3506 driver_unregister(&sdebug_driverfs_driver);
3508 bus_unregister(&pseudo_lld_bus);
3510 root_device_unregister(pseudo_primary);
3521 static void __exit scsi_debug_exit(void)
3523 int k = scsi_debug_add_host;
3527 sdebug_remove_adapter();
3528 do_remove_driverfs_files();
3529 driver_unregister(&sdebug_driverfs_driver);
3530 bus_unregister(&pseudo_lld_bus);
3531 root_device_unregister(pseudo_primary);
3539 device_initcall(scsi_debug_init);
3540 module_exit(scsi_debug_exit);
3542 static void sdebug_release_adapter(struct device * dev)
3544 struct sdebug_host_info *sdbg_host;
3546 sdbg_host = to_sdebug_host(dev);
3550 static int sdebug_add_adapter(void)
3552 int k, devs_per_host;
3554 struct sdebug_host_info *sdbg_host;
3555 struct sdebug_dev_info *sdbg_devinfo, *tmp;
3557 sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL);
3558 if (NULL == sdbg_host) {
3559 printk(KERN_ERR "%s: out of memory at line %d\n",
3560 __func__, __LINE__);
3564 INIT_LIST_HEAD(&sdbg_host->dev_info_list);
3566 devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns;
3567 for (k = 0; k < devs_per_host; k++) {
3568 sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL);
3569 if (!sdbg_devinfo) {
3570 printk(KERN_ERR "%s: out of memory at line %d\n",
3571 __func__, __LINE__);
3577 spin_lock(&sdebug_host_list_lock);
3578 list_add_tail(&sdbg_host->host_list, &sdebug_host_list);
3579 spin_unlock(&sdebug_host_list_lock);
3581 sdbg_host->dev.bus = &pseudo_lld_bus;
3582 sdbg_host->dev.parent = pseudo_primary;
3583 sdbg_host->dev.release = &sdebug_release_adapter;
3584 dev_set_name(&sdbg_host->dev, "adapter%d", scsi_debug_add_host);
3586 error = device_register(&sdbg_host->dev);
3591 ++scsi_debug_add_host;
3595 list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list,
3597 list_del(&sdbg_devinfo->dev_list);
3598 kfree(sdbg_devinfo);
3605 static void sdebug_remove_adapter(void)
3607 struct sdebug_host_info * sdbg_host = NULL;
3609 spin_lock(&sdebug_host_list_lock);
3610 if (!list_empty(&sdebug_host_list)) {
3611 sdbg_host = list_entry(sdebug_host_list.prev,
3612 struct sdebug_host_info, host_list);
3613 list_del(&sdbg_host->host_list);
3615 spin_unlock(&sdebug_host_list_lock);
3620 device_unregister(&sdbg_host->dev);
3621 --scsi_debug_add_host;
3625 int scsi_debug_queuecommand_lck(struct scsi_cmnd *SCpnt, done_funct_t done)
3627 unsigned char *cmd = (unsigned char *) SCpnt->cmnd;
3630 unsigned long long lba;
3633 int target = SCpnt->device->id;
3634 struct sdebug_dev_info *devip = NULL;
3635 int inj_recovered = 0;
3636 int inj_transport = 0;
3639 int delay_override = 0;
3642 scsi_set_resid(SCpnt, 0);
3643 if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) {
3644 printk(KERN_INFO "scsi_debug: cmd ");
3645 for (k = 0, len = SCpnt->cmd_len; k < len; ++k)
3646 printk("%02x ", (int)cmd[k]);
3650 if (target == SCpnt->device->host->hostt->this_id) {
3651 printk(KERN_INFO "scsi_debug: initiator's id used as "
3653 return schedule_resp(SCpnt, NULL, done,
3654 DID_NO_CONNECT << 16, 0);
3657 if ((SCpnt->device->lun >= scsi_debug_max_luns) &&
3658 (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS))
3659 return schedule_resp(SCpnt, NULL, done,
3660 DID_NO_CONNECT << 16, 0);
3661 devip = devInfoReg(SCpnt->device);
3663 return schedule_resp(SCpnt, NULL, done,
3664 DID_NO_CONNECT << 16, 0);
3666 if ((scsi_debug_every_nth != 0) &&
3667 (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) {
3668 scsi_debug_cmnd_count = 0;
3669 if (scsi_debug_every_nth < -1)
3670 scsi_debug_every_nth = -1;
3671 if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts)
3672 return 0; /* ignore command causing timeout */
3673 else if (SCSI_DEBUG_OPT_MAC_TIMEOUT & scsi_debug_opts &&
3674 scsi_medium_access_command(SCpnt))
3675 return 0; /* time out reads and writes */
3676 else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts)
3677 inj_recovered = 1; /* to reads and writes below */
3678 else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts)
3679 inj_transport = 1; /* to reads and writes below */
3680 else if (SCSI_DEBUG_OPT_DIF_ERR & scsi_debug_opts)
3681 inj_dif = 1; /* to reads and writes below */
3682 else if (SCSI_DEBUG_OPT_DIX_ERR & scsi_debug_opts)
3683 inj_dix = 1; /* to reads and writes below */
3690 case TEST_UNIT_READY:
3692 break; /* only allowable wlun commands */
3694 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
3695 printk(KERN_INFO "scsi_debug: Opcode: 0x%x "
3696 "not supported for wlun\n", *cmd);
3697 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3699 errsts = check_condition_result;
3700 return schedule_resp(SCpnt, devip, done, errsts,
3706 case INQUIRY: /* mandatory, ignore unit attention */
3708 errsts = resp_inquiry(SCpnt, target, devip);
3710 case REQUEST_SENSE: /* mandatory, ignore unit attention */
3712 errsts = resp_requests(SCpnt, devip);
3714 case REZERO_UNIT: /* actually this is REWIND for SSC */
3716 errsts = resp_start_stop(SCpnt, devip);
3718 case ALLOW_MEDIUM_REMOVAL:
3719 errsts = check_readiness(SCpnt, 1, devip);
3722 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
3723 printk(KERN_INFO "scsi_debug: Medium removal %s\n",
3724 cmd[4] ? "inhibited" : "enabled");
3726 case SEND_DIAGNOSTIC: /* mandatory */
3727 errsts = check_readiness(SCpnt, 1, devip);
3729 case TEST_UNIT_READY: /* mandatory */
3731 errsts = check_readiness(SCpnt, 0, devip);
3734 errsts = check_readiness(SCpnt, 1, devip);
3737 errsts = check_readiness(SCpnt, 1, devip);
3740 errsts = check_readiness(SCpnt, 1, devip);
3743 errsts = check_readiness(SCpnt, 1, devip);
3746 errsts = resp_readcap(SCpnt, devip);
3748 case SERVICE_ACTION_IN:
3749 if (cmd[1] == SAI_READ_CAPACITY_16)
3750 errsts = resp_readcap16(SCpnt, devip);
3751 else if (cmd[1] == SAI_GET_LBA_STATUS) {
3753 if (scsi_debug_lbp() == 0) {
3754 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3755 INVALID_COMMAND_OPCODE, 0);
3756 errsts = check_condition_result;
3758 errsts = resp_get_lba_status(SCpnt, devip);
3760 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3762 errsts = check_condition_result;
3765 case MAINTENANCE_IN:
3766 if (MI_REPORT_TARGET_PGS != cmd[1]) {
3767 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3769 errsts = check_condition_result;
3772 errsts = resp_report_tgtpgs(SCpnt, devip);
3777 /* READ{10,12,16} and DIF Type 2 are natural enemies */
3778 if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
3780 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3781 INVALID_COMMAND_OPCODE, 0);
3782 errsts = check_condition_result;
3786 if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION ||
3787 scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) &&
3788 (cmd[1] & 0xe0) == 0)
3789 printk(KERN_ERR "Unprotected RD/WR to DIF device\n");
3794 errsts = check_readiness(SCpnt, 0, devip);
3797 if (scsi_debug_fake_rw)
3799 get_data_transfer_info(cmd, &lba, &num, &ei_lba);
3800 errsts = resp_read(SCpnt, lba, num, devip, ei_lba);
3801 if (inj_recovered && (0 == errsts)) {
3802 mk_sense_buffer(devip, RECOVERED_ERROR,
3803 THRESHOLD_EXCEEDED, 0);
3804 errsts = check_condition_result;
3805 } else if (inj_transport && (0 == errsts)) {
3806 mk_sense_buffer(devip, ABORTED_COMMAND,
3807 TRANSPORT_PROBLEM, ACK_NAK_TO);
3808 errsts = check_condition_result;
3809 } else if (inj_dif && (0 == errsts)) {
3810 mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1);
3811 errsts = illegal_condition_result;
3812 } else if (inj_dix && (0 == errsts)) {
3813 mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1);
3814 errsts = illegal_condition_result;
3817 case REPORT_LUNS: /* mandatory, ignore unit attention */
3819 errsts = resp_report_luns(SCpnt, devip);
3821 case VERIFY: /* 10 byte SBC-2 command */
3822 errsts = check_readiness(SCpnt, 0, devip);
3827 /* WRITE{10,12,16} and DIF Type 2 are natural enemies */
3828 if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
3830 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3831 INVALID_COMMAND_OPCODE, 0);
3832 errsts = check_condition_result;
3836 if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION ||
3837 scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) &&
3838 (cmd[1] & 0xe0) == 0)
3839 printk(KERN_ERR "Unprotected RD/WR to DIF device\n");
3844 errsts = check_readiness(SCpnt, 0, devip);
3847 if (scsi_debug_fake_rw)
3849 get_data_transfer_info(cmd, &lba, &num, &ei_lba);
3850 errsts = resp_write(SCpnt, lba, num, devip, ei_lba);
3851 if (inj_recovered && (0 == errsts)) {
3852 mk_sense_buffer(devip, RECOVERED_ERROR,
3853 THRESHOLD_EXCEEDED, 0);
3854 errsts = check_condition_result;
3855 } else if (inj_dif && (0 == errsts)) {
3856 mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1);
3857 errsts = illegal_condition_result;
3858 } else if (inj_dix && (0 == errsts)) {
3859 mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1);
3860 errsts = illegal_condition_result;
3866 if ((*cmd == WRITE_SAME_16 && scsi_debug_lbpws == 0) ||
3867 (*cmd == WRITE_SAME && scsi_debug_lbpws10 == 0)) {
3868 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3869 INVALID_FIELD_IN_CDB, 0);
3870 errsts = check_condition_result;
3876 errsts = check_readiness(SCpnt, 0, devip);
3879 get_data_transfer_info(cmd, &lba, &num, &ei_lba);
3880 errsts = resp_write_same(SCpnt, lba, num, devip, ei_lba, unmap);
3883 errsts = check_readiness(SCpnt, 0, devip);
3887 if (scsi_debug_unmap_max_desc == 0 || scsi_debug_lbpu == 0) {
3888 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3889 INVALID_COMMAND_OPCODE, 0);
3890 errsts = check_condition_result;
3892 errsts = resp_unmap(SCpnt, devip);
3896 errsts = resp_mode_sense(SCpnt, target, devip);
3899 errsts = resp_mode_select(SCpnt, 1, devip);
3901 case MODE_SELECT_10:
3902 errsts = resp_mode_select(SCpnt, 0, devip);
3905 errsts = resp_log_sense(SCpnt, devip);
3907 case SYNCHRONIZE_CACHE:
3909 errsts = check_readiness(SCpnt, 0, devip);
3912 errsts = check_readiness(SCpnt, 1, devip);
3914 case XDWRITEREAD_10:
3915 if (!scsi_bidi_cmnd(SCpnt)) {
3916 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3917 INVALID_FIELD_IN_CDB, 0);
3918 errsts = check_condition_result;
3922 errsts = check_readiness(SCpnt, 0, devip);
3925 if (scsi_debug_fake_rw)
3927 get_data_transfer_info(cmd, &lba, &num, &ei_lba);
3928 errsts = resp_read(SCpnt, lba, num, devip, ei_lba);
3931 errsts = resp_write(SCpnt, lba, num, devip, ei_lba);
3934 errsts = resp_xdwriteread(SCpnt, lba, num, devip);
3936 case VARIABLE_LENGTH_CMD:
3937 if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION) {
3939 if ((cmd[10] & 0xe0) == 0)
3941 "Unprotected RD/WR to DIF device\n");
3943 if (cmd[9] == READ_32) {
3944 BUG_ON(SCpnt->cmd_len < 32);
3948 if (cmd[9] == WRITE_32) {
3949 BUG_ON(SCpnt->cmd_len < 32);
3954 mk_sense_buffer(devip, ILLEGAL_REQUEST,
3955 INVALID_FIELD_IN_CDB, 0);
3956 errsts = check_condition_result;
3960 if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
3961 printk(KERN_INFO "scsi_debug: Opcode: 0x%x not "
3962 "supported\n", *cmd);
3963 errsts = check_readiness(SCpnt, 1, devip);
3965 break; /* Unit attention takes precedence */
3966 mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0);
3967 errsts = check_condition_result;
3970 return schedule_resp(SCpnt, devip, done, errsts,
3971 (delay_override ? 0 : scsi_debug_delay));
3974 static DEF_SCSI_QCMD(scsi_debug_queuecommand)
3976 static struct scsi_host_template sdebug_driver_template = {
3977 .show_info = scsi_debug_show_info,
3978 .write_info = scsi_debug_write_info,
3979 .proc_name = sdebug_proc_name,
3980 .name = "SCSI DEBUG",
3981 .info = scsi_debug_info,
3982 .slave_alloc = scsi_debug_slave_alloc,
3983 .slave_configure = scsi_debug_slave_configure,
3984 .slave_destroy = scsi_debug_slave_destroy,
3985 .ioctl = scsi_debug_ioctl,
3986 .queuecommand = scsi_debug_queuecommand,
3987 .eh_abort_handler = scsi_debug_abort,
3988 .eh_bus_reset_handler = scsi_debug_bus_reset,
3989 .eh_device_reset_handler = scsi_debug_device_reset,
3990 .eh_host_reset_handler = scsi_debug_host_reset,
3991 .bios_param = scsi_debug_biosparam,
3992 .can_queue = SCSI_DEBUG_CANQUEUE,
3994 .sg_tablesize = 256,
3996 .max_sectors = 0xffff,
3997 .use_clustering = DISABLE_CLUSTERING,
3998 .module = THIS_MODULE,
4001 static int sdebug_driver_probe(struct device * dev)
4004 struct sdebug_host_info *sdbg_host;
4005 struct Scsi_Host *hpnt;
4008 sdbg_host = to_sdebug_host(dev);
4010 sdebug_driver_template.can_queue = scsi_debug_max_queue;
4011 hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host));
4013 printk(KERN_ERR "%s: scsi_register failed\n", __func__);
4018 sdbg_host->shost = hpnt;
4019 *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host;
4020 if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id))
4021 hpnt->max_id = scsi_debug_num_tgts + 1;
4023 hpnt->max_id = scsi_debug_num_tgts;
4024 hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */
4028 switch (scsi_debug_dif) {
4030 case SD_DIF_TYPE1_PROTECTION:
4031 host_prot = SHOST_DIF_TYPE1_PROTECTION;
4033 host_prot |= SHOST_DIX_TYPE1_PROTECTION;
4036 case SD_DIF_TYPE2_PROTECTION:
4037 host_prot = SHOST_DIF_TYPE2_PROTECTION;
4039 host_prot |= SHOST_DIX_TYPE2_PROTECTION;
4042 case SD_DIF_TYPE3_PROTECTION:
4043 host_prot = SHOST_DIF_TYPE3_PROTECTION;
4045 host_prot |= SHOST_DIX_TYPE3_PROTECTION;
4050 host_prot |= SHOST_DIX_TYPE0_PROTECTION;
4054 scsi_host_set_prot(hpnt, host_prot);
4056 printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n",
4057 (host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "",
4058 (host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "",
4059 (host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "",
4060 (host_prot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "",
4061 (host_prot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "",
4062 (host_prot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "",
4063 (host_prot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : "");
4065 if (scsi_debug_guard == 1)
4066 scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP);
4068 scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC);
4070 error = scsi_add_host(hpnt, &sdbg_host->dev);
4072 printk(KERN_ERR "%s: scsi_add_host failed\n", __func__);
4074 scsi_host_put(hpnt);
4076 scsi_scan_host(hpnt);
4082 static int sdebug_driver_remove(struct device * dev)
4084 struct sdebug_host_info *sdbg_host;
4085 struct sdebug_dev_info *sdbg_devinfo, *tmp;
4087 sdbg_host = to_sdebug_host(dev);
4090 printk(KERN_ERR "%s: Unable to locate host info\n",
4095 scsi_remove_host(sdbg_host->shost);
4097 list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list,
4099 list_del(&sdbg_devinfo->dev_list);
4100 kfree(sdbg_devinfo);
4103 scsi_host_put(sdbg_host->shost);
4107 static int pseudo_lld_bus_match(struct device *dev,
4108 struct device_driver *dev_driver)
4113 static struct bus_type pseudo_lld_bus = {
4115 .match = pseudo_lld_bus_match,
4116 .probe = sdebug_driver_probe,
4117 .remove = sdebug_driver_remove,