Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv |
| 3 | * Copyright (C) 1992 Eric Youngdale |
| 4 | * Simulate a host adapter with 2 disks attached. Do a lot of checking |
| 5 | * to make sure that we are not getting blocks mixed up, and PANIC if |
| 6 | * anything out of the ordinary is seen. |
| 7 | * ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| 8 | * |
| 9 | * This version is more generic, simulating a variable number of disk |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 10 | * (or disk like devices) sharing a common amount of RAM. To be more |
| 11 | * realistic, the simulated devices have the transport attributes of |
| 12 | * SAS disks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
| 14 | * |
| 15 | * For documentation see http://www.torque.net/sg/sdebug26.html |
| 16 | * |
| 17 | * D. Gilbert (dpg) work for Magneto-Optical device test [20010421] |
| 18 | * dpg: work for devfs large number of disks [20010809] |
| 19 | * forked for lk 2.5 series [20011216, 20020101] |
| 20 | * use vmalloc() more inquiry+mode_sense [20020302] |
| 21 | * add timers for delayed responses [20020721] |
| 22 | * Patrick Mansfield <patmans@us.ibm.com> max_luns+scsi_level [20021031] |
| 23 | * Mike Anderson <andmike@us.ibm.com> sysfs work [20021118] |
| 24 | * dpg: change style of boot options to "scsi_debug.num_tgts=2" and |
| 25 | * module options to "modprobe scsi_debug num_tgts=2" [20021221] |
| 26 | */ |
| 27 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/module.h> |
| 29 | |
| 30 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/errno.h> |
| 32 | #include <linux/timer.h> |
| 33 | #include <linux/types.h> |
| 34 | #include <linux/string.h> |
| 35 | #include <linux/genhd.h> |
| 36 | #include <linux/fs.h> |
| 37 | #include <linux/init.h> |
| 38 | #include <linux/proc_fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <linux/vmalloc.h> |
| 40 | #include <linux/moduleparam.h> |
Jens Axboe | 852e034 | 2007-07-16 10:19:24 +0200 | [diff] [blame] | 41 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/blkdev.h> |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 43 | #include <linux/crc-t10dif.h> |
| 44 | |
| 45 | #include <net/checksum.h> |
FUJITA Tomonori | 9ff26ee | 2008-03-02 18:30:15 +0900 | [diff] [blame] | 46 | |
| 47 | #include <scsi/scsi.h> |
| 48 | #include <scsi/scsi_cmnd.h> |
| 49 | #include <scsi/scsi_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #include <scsi/scsi_host.h> |
| 51 | #include <scsi/scsicam.h> |
FUJITA Tomonori | a34c4e9 | 2008-03-25 09:26:50 +0900 | [diff] [blame] | 52 | #include <scsi/scsi_eh.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 54 | #include "sd.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #include "scsi_logging.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 57 | #define SCSI_DEBUG_VERSION "1.81" |
| 58 | static const char * scsi_debug_version_date = "20070104"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 60 | /* Additional Sense Code (ASC) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 61 | #define NO_ADDITIONAL_SENSE 0x0 |
| 62 | #define LOGICAL_UNIT_NOT_READY 0x4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | #define UNRECOVERED_READ_ERR 0x11 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 64 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | #define INVALID_OPCODE 0x20 |
| 66 | #define ADDR_OUT_OF_RANGE 0x21 |
| 67 | #define INVALID_FIELD_IN_CDB 0x24 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 68 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | #define POWERON_RESET 0x29 |
| 70 | #define SAVING_PARAMS_UNSUP 0x39 |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 71 | #define TRANSPORT_PROBLEM 0x4b |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 72 | #define THRESHOLD_EXCEEDED 0x5d |
| 73 | #define LOW_POWER_COND_ON 0x5e |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 75 | /* Additional Sense Code Qualifier (ASCQ) */ |
| 76 | #define ACK_NAK_TO 0x3 |
| 77 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ |
| 79 | |
| 80 | /* Default values for driver parameters */ |
| 81 | #define DEF_NUM_HOST 1 |
| 82 | #define DEF_NUM_TGTS 1 |
| 83 | #define DEF_MAX_LUNS 1 |
| 84 | /* With these defaults, this driver will make 1 host with 1 target |
| 85 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. |
| 86 | */ |
| 87 | #define DEF_DELAY 1 |
| 88 | #define DEF_DEV_SIZE_MB 8 |
| 89 | #define DEF_EVERY_NTH 0 |
| 90 | #define DEF_NUM_PARTS 0 |
| 91 | #define DEF_OPTS 0 |
| 92 | #define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ |
| 93 | #define DEF_PTYPE 0 |
| 94 | #define DEF_D_SENSE 0 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 95 | #define DEF_NO_LUN_0 0 |
| 96 | #define DEF_VIRTUAL_GB 0 |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 97 | #define DEF_FAKE_RW 0 |
| 98 | #define DEF_VPD_USE_HOSTNO 1 |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 99 | #define DEF_SECTOR_SIZE 512 |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 100 | #define DEF_DIX 0 |
| 101 | #define DEF_DIF 0 |
| 102 | #define DEF_GUARD 0 |
| 103 | #define DEF_ATO 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | |
| 105 | /* bit mask values for scsi_debug_opts */ |
| 106 | #define SCSI_DEBUG_OPT_NOISE 1 |
| 107 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 |
| 108 | #define SCSI_DEBUG_OPT_TIMEOUT 4 |
| 109 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 110 | #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 111 | #define SCSI_DEBUG_OPT_DIF_ERR 32 |
| 112 | #define SCSI_DEBUG_OPT_DIX_ERR 64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
| 114 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| 115 | * - a RECOVERED_ERROR is simulated on successful read and write |
| 116 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 117 | * - a TRANSPORT_ERROR is simulated on successful read and write |
| 118 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | * |
| 120 | * When "every_nth" < 0 then after "- every_nth" commands: |
| 121 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| 122 | * - a RECOVERED_ERROR is simulated on successful read and write |
| 123 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 124 | * - a TRANSPORT_ERROR is simulated on successful read and write |
| 125 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | * This will continue until some other action occurs (e.g. the user |
| 127 | * writing a new value (other than -1 or 1) to every_nth via sysfs). |
| 128 | */ |
| 129 | |
| 130 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this |
| 131 | * sector on read commands: */ |
| 132 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ |
| 133 | |
| 134 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) |
| 135 | * or "peripheral device" addressing (value 0) */ |
| 136 | #define SAM2_LUN_ADDRESS_METHOD 0 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 137 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
| 139 | static int scsi_debug_add_host = DEF_NUM_HOST; |
| 140 | static int scsi_debug_delay = DEF_DELAY; |
| 141 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; |
| 142 | static int scsi_debug_every_nth = DEF_EVERY_NTH; |
| 143 | static int scsi_debug_max_luns = DEF_MAX_LUNS; |
| 144 | static int scsi_debug_num_parts = DEF_NUM_PARTS; |
| 145 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ |
| 146 | static int scsi_debug_opts = DEF_OPTS; |
| 147 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; |
| 148 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ |
| 149 | static int scsi_debug_dsense = DEF_D_SENSE; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 150 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
| 151 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 152 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
| 153 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 154 | static int scsi_debug_sector_size = DEF_SECTOR_SIZE; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 155 | static int scsi_debug_dix = DEF_DIX; |
| 156 | static int scsi_debug_dif = DEF_DIF; |
| 157 | static int scsi_debug_guard = DEF_GUARD; |
| 158 | static int scsi_debug_ato = DEF_ATO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | |
| 160 | static int scsi_debug_cmnd_count = 0; |
| 161 | |
| 162 | #define DEV_READONLY(TGT) (0) |
| 163 | #define DEV_REMOVEABLE(TGT) (0) |
| 164 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 165 | static unsigned int sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | static sector_t sdebug_capacity; /* in sectors */ |
| 167 | |
| 168 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages |
| 169 | may still need them */ |
| 170 | static int sdebug_heads; /* heads per disk */ |
| 171 | static int sdebug_cylinders_per; /* cylinders per surface */ |
| 172 | static int sdebug_sectors_per; /* sectors per cylinder */ |
| 173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | #define SDEBUG_MAX_PARTS 4 |
| 175 | |
| 176 | #define SDEBUG_SENSE_LEN 32 |
| 177 | |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 178 | #define SCSI_DEBUG_CANQUEUE 255 |
| 179 | #define SCSI_DEBUG_MAX_CMD_LEN 16 |
| 180 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | struct sdebug_dev_info { |
| 182 | struct list_head dev_list; |
| 183 | unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ |
| 184 | unsigned int channel; |
| 185 | unsigned int target; |
| 186 | unsigned int lun; |
| 187 | struct sdebug_host_info *sdbg_host; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 188 | unsigned int wlun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | char reset; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 190 | char stopped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | char used; |
| 192 | }; |
| 193 | |
| 194 | struct sdebug_host_info { |
| 195 | struct list_head host_list; |
| 196 | struct Scsi_Host *shost; |
| 197 | struct device dev; |
| 198 | struct list_head dev_info_list; |
| 199 | }; |
| 200 | |
| 201 | #define to_sdebug_host(d) \ |
| 202 | container_of(d, struct sdebug_host_info, dev) |
| 203 | |
| 204 | static LIST_HEAD(sdebug_host_list); |
| 205 | static DEFINE_SPINLOCK(sdebug_host_list_lock); |
| 206 | |
| 207 | typedef void (* done_funct_t) (struct scsi_cmnd *); |
| 208 | |
| 209 | struct sdebug_queued_cmd { |
| 210 | int in_use; |
| 211 | struct timer_list cmnd_timer; |
| 212 | done_funct_t done_funct; |
| 213 | struct scsi_cmnd * a_cmnd; |
| 214 | int scsi_result; |
| 215 | }; |
| 216 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; |
| 217 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | static unsigned char * fake_storep; /* ramdisk storage */ |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 219 | static unsigned char *dif_storep; /* protection info */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
| 221 | static int num_aborts = 0; |
| 222 | static int num_dev_resets = 0; |
| 223 | static int num_bus_resets = 0; |
| 224 | static int num_host_resets = 0; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 225 | static int dix_writes; |
| 226 | static int dix_reads; |
| 227 | static int dif_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | |
| 229 | static DEFINE_SPINLOCK(queued_arr_lock); |
| 230 | static DEFINE_RWLOCK(atomic_rw); |
| 231 | |
| 232 | static char sdebug_proc_name[] = "scsi_debug"; |
| 233 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | static struct bus_type pseudo_lld_bus; |
| 235 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 236 | static inline sector_t dif_offset(sector_t sector) |
| 237 | { |
| 238 | return sector << 3; |
| 239 | } |
| 240 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | static struct device_driver sdebug_driverfs_driver = { |
| 242 | .name = sdebug_proc_name, |
| 243 | .bus = &pseudo_lld_bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | }; |
| 245 | |
| 246 | static const int check_condition_result = |
| 247 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
| 248 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 249 | static const int illegal_condition_result = |
| 250 | (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; |
| 251 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 252 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
| 253 | 0, 0, 0x2, 0x4b}; |
| 254 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 255 | 0, 0, 0x0, 0x0}; |
| 256 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | static int sdebug_add_adapter(void); |
| 258 | static void sdebug_remove_adapter(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 260 | static void sdebug_max_tgts_luns(void) |
| 261 | { |
| 262 | struct sdebug_host_info *sdbg_host; |
| 263 | struct Scsi_Host *hpnt; |
| 264 | |
| 265 | spin_lock(&sdebug_host_list_lock); |
| 266 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
| 267 | hpnt = sdbg_host->shost; |
| 268 | if ((hpnt->this_id >= 0) && |
| 269 | (scsi_debug_num_tgts > hpnt->this_id)) |
| 270 | hpnt->max_id = scsi_debug_num_tgts + 1; |
| 271 | else |
| 272 | hpnt->max_id = scsi_debug_num_tgts; |
| 273 | /* scsi_debug_max_luns; */ |
| 274 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; |
| 275 | } |
| 276 | spin_unlock(&sdebug_host_list_lock); |
| 277 | } |
| 278 | |
| 279 | static void mk_sense_buffer(struct sdebug_dev_info *devip, int key, |
| 280 | int asc, int asq) |
| 281 | { |
| 282 | unsigned char *sbuff; |
| 283 | |
| 284 | sbuff = devip->sense_buff; |
| 285 | memset(sbuff, 0, SDEBUG_SENSE_LEN); |
| 286 | |
| 287 | scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); |
| 288 | |
| 289 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 290 | printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " |
| 291 | "[0x%x,0x%x,0x%x]\n", key, asc, asq); |
| 292 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 294 | static void get_data_transfer_info(unsigned char *cmd, |
| 295 | unsigned long long *lba, unsigned int *num) |
| 296 | { |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 297 | switch (*cmd) { |
| 298 | case WRITE_16: |
| 299 | case READ_16: |
FUJITA Tomonori | d5cdc98 | 2008-03-25 17:04:46 +0900 | [diff] [blame] | 300 | *lba = (u64)cmd[9] | (u64)cmd[8] << 8 | |
| 301 | (u64)cmd[7] << 16 | (u64)cmd[6] << 24 | |
| 302 | (u64)cmd[5] << 32 | (u64)cmd[4] << 40 | |
| 303 | (u64)cmd[3] << 48 | (u64)cmd[2] << 56; |
| 304 | |
| 305 | *num = (u32)cmd[13] | (u32)cmd[12] << 8 | (u32)cmd[11] << 16 | |
| 306 | (u32)cmd[10] << 24; |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 307 | break; |
| 308 | case WRITE_12: |
| 309 | case READ_12: |
FUJITA Tomonori | d5cdc98 | 2008-03-25 17:04:46 +0900 | [diff] [blame] | 310 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
| 311 | (u32)cmd[2] << 24; |
| 312 | |
| 313 | *num = (u32)cmd[9] | (u32)cmd[8] << 8 | (u32)cmd[7] << 16 | |
| 314 | (u32)cmd[6] << 24; |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 315 | break; |
| 316 | case WRITE_10: |
| 317 | case READ_10: |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 318 | case XDWRITEREAD_10: |
FUJITA Tomonori | d5cdc98 | 2008-03-25 17:04:46 +0900 | [diff] [blame] | 319 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
| 320 | (u32)cmd[2] << 24; |
| 321 | |
| 322 | *num = (u32)cmd[8] | (u32)cmd[7] << 8; |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 323 | break; |
| 324 | case WRITE_6: |
| 325 | case READ_6: |
FUJITA Tomonori | d5cdc98 | 2008-03-25 17:04:46 +0900 | [diff] [blame] | 326 | *lba = (u32)cmd[3] | (u32)cmd[2] << 8 | |
| 327 | (u32)(cmd[1] & 0x1f) << 16; |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 328 | *num = (0 == cmd[4]) ? 256 : cmd[4]; |
| 329 | break; |
| 330 | default: |
| 331 | break; |
| 332 | } |
| 333 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
| 336 | { |
| 337 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { |
| 338 | printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); |
| 339 | } |
| 340 | return -EINVAL; |
| 341 | /* return -ENOTTY; // correct return but upsets fdisk */ |
| 342 | } |
| 343 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 344 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
| 345 | struct sdebug_dev_info * devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | { |
| 347 | if (devip->reset) { |
| 348 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 349 | printk(KERN_INFO "scsi_debug: Reporting Unit " |
| 350 | "attention: power on reset\n"); |
| 351 | devip->reset = 0; |
| 352 | mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); |
| 353 | return check_condition_result; |
| 354 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 355 | if ((0 == reset_only) && devip->stopped) { |
| 356 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 357 | printk(KERN_INFO "scsi_debug: Reporting Not " |
| 358 | "ready: initializing command required\n"); |
| 359 | mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, |
| 360 | 0x2); |
| 361 | return check_condition_result; |
| 362 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | return 0; |
| 364 | } |
| 365 | |
| 366 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 367 | static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | int arr_len) |
| 369 | { |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 370 | int act_len; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 371 | struct scsi_data_buffer *sdb = scsi_in(scp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 373 | if (!sdb->length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | return 0; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 375 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | return (DID_ERROR << 16); |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 377 | |
| 378 | act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, |
| 379 | arr, arr_len); |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 380 | if (sdb->resid) |
| 381 | sdb->resid -= act_len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 382 | else |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 383 | sdb->resid = scsi_bufflen(scp) - act_len; |
| 384 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | return 0; |
| 386 | } |
| 387 | |
| 388 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 389 | static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
| 390 | int arr_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | { |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 392 | if (!scsi_bufflen(scp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | return 0; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 394 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | return -1; |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 396 | |
| 397 | return scsi_sg_copy_to_buffer(scp, arr, arr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | } |
| 399 | |
| 400 | |
| 401 | static const char * inq_vendor_id = "Linux "; |
| 402 | static const char * inq_product_id = "scsi_debug "; |
| 403 | static const char * inq_product_rev = "0004"; |
| 404 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 405 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
| 406 | int target_dev_id, int dev_id_num, |
| 407 | const char * dev_id_str, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 408 | int dev_id_str_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 410 | int num, port_a; |
| 411 | char b[32]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 413 | port_a = target_dev_id + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | /* T10 vendor identifier field format (faked) */ |
| 415 | arr[0] = 0x2; /* ASCII */ |
| 416 | arr[1] = 0x1; |
| 417 | arr[2] = 0x0; |
| 418 | memcpy(&arr[4], inq_vendor_id, 8); |
| 419 | memcpy(&arr[12], inq_product_id, 16); |
| 420 | memcpy(&arr[28], dev_id_str, dev_id_str_len); |
| 421 | num = 8 + 16 + dev_id_str_len; |
| 422 | arr[3] = num; |
| 423 | num += 4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 424 | if (dev_id_num >= 0) { |
| 425 | /* NAA-5, Logical unit identifier (binary) */ |
| 426 | arr[num++] = 0x1; /* binary (not necessarily sas) */ |
| 427 | arr[num++] = 0x3; /* PIV=0, lu, naa */ |
| 428 | arr[num++] = 0x0; |
| 429 | arr[num++] = 0x8; |
| 430 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ |
| 431 | arr[num++] = 0x33; |
| 432 | arr[num++] = 0x33; |
| 433 | arr[num++] = 0x30; |
| 434 | arr[num++] = (dev_id_num >> 24); |
| 435 | arr[num++] = (dev_id_num >> 16) & 0xff; |
| 436 | arr[num++] = (dev_id_num >> 8) & 0xff; |
| 437 | arr[num++] = dev_id_num & 0xff; |
| 438 | /* Target relative port number */ |
| 439 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 440 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ |
| 441 | arr[num++] = 0x0; /* reserved */ |
| 442 | arr[num++] = 0x4; /* length */ |
| 443 | arr[num++] = 0x0; /* reserved */ |
| 444 | arr[num++] = 0x0; /* reserved */ |
| 445 | arr[num++] = 0x0; |
| 446 | arr[num++] = 0x1; /* relative port A */ |
| 447 | } |
| 448 | /* NAA-5, Target port identifier */ |
| 449 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 450 | arr[num++] = 0x93; /* piv=1, target port, naa */ |
| 451 | arr[num++] = 0x0; |
| 452 | arr[num++] = 0x8; |
| 453 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| 454 | arr[num++] = 0x22; |
| 455 | arr[num++] = 0x22; |
| 456 | arr[num++] = 0x20; |
| 457 | arr[num++] = (port_a >> 24); |
| 458 | arr[num++] = (port_a >> 16) & 0xff; |
| 459 | arr[num++] = (port_a >> 8) & 0xff; |
| 460 | arr[num++] = port_a & 0xff; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 461 | /* NAA-5, Target port group identifier */ |
| 462 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 463 | arr[num++] = 0x95; /* piv=1, target port group id */ |
| 464 | arr[num++] = 0x0; |
| 465 | arr[num++] = 0x4; |
| 466 | arr[num++] = 0; |
| 467 | arr[num++] = 0; |
| 468 | arr[num++] = (port_group_id >> 8) & 0xff; |
| 469 | arr[num++] = port_group_id & 0xff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 470 | /* NAA-5, Target device identifier */ |
| 471 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 472 | arr[num++] = 0xa3; /* piv=1, target device, naa */ |
| 473 | arr[num++] = 0x0; |
| 474 | arr[num++] = 0x8; |
| 475 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| 476 | arr[num++] = 0x22; |
| 477 | arr[num++] = 0x22; |
| 478 | arr[num++] = 0x20; |
| 479 | arr[num++] = (target_dev_id >> 24); |
| 480 | arr[num++] = (target_dev_id >> 16) & 0xff; |
| 481 | arr[num++] = (target_dev_id >> 8) & 0xff; |
| 482 | arr[num++] = target_dev_id & 0xff; |
| 483 | /* SCSI name string: Target device identifier */ |
| 484 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ |
| 485 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ |
| 486 | arr[num++] = 0x0; |
| 487 | arr[num++] = 24; |
| 488 | memcpy(arr + num, "naa.52222220", 12); |
| 489 | num += 12; |
| 490 | snprintf(b, sizeof(b), "%08X", target_dev_id); |
| 491 | memcpy(arr + num, b, 8); |
| 492 | num += 8; |
| 493 | memset(arr + num, 0, 4); |
| 494 | num += 4; |
| 495 | return num; |
| 496 | } |
| 497 | |
| 498 | |
| 499 | static unsigned char vpd84_data[] = { |
| 500 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, |
| 501 | 0x22,0x22,0x22,0x0,0xbb,0x1, |
| 502 | 0x22,0x22,0x22,0x0,0xbb,0x2, |
| 503 | }; |
| 504 | |
| 505 | static int inquiry_evpd_84(unsigned char * arr) |
| 506 | { |
| 507 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); |
| 508 | return sizeof(vpd84_data); |
| 509 | } |
| 510 | |
| 511 | static int inquiry_evpd_85(unsigned char * arr) |
| 512 | { |
| 513 | int num = 0; |
| 514 | const char * na1 = "https://www.kernel.org/config"; |
| 515 | const char * na2 = "http://www.kernel.org/log"; |
| 516 | int plen, olen; |
| 517 | |
| 518 | arr[num++] = 0x1; /* lu, storage config */ |
| 519 | arr[num++] = 0x0; /* reserved */ |
| 520 | arr[num++] = 0x0; |
| 521 | olen = strlen(na1); |
| 522 | plen = olen + 1; |
| 523 | if (plen % 4) |
| 524 | plen = ((plen / 4) + 1) * 4; |
| 525 | arr[num++] = plen; /* length, null termianted, padded */ |
| 526 | memcpy(arr + num, na1, olen); |
| 527 | memset(arr + num + olen, 0, plen - olen); |
| 528 | num += plen; |
| 529 | |
| 530 | arr[num++] = 0x4; /* lu, logging */ |
| 531 | arr[num++] = 0x0; /* reserved */ |
| 532 | arr[num++] = 0x0; |
| 533 | olen = strlen(na2); |
| 534 | plen = olen + 1; |
| 535 | if (plen % 4) |
| 536 | plen = ((plen / 4) + 1) * 4; |
| 537 | arr[num++] = plen; /* length, null terminated, padded */ |
| 538 | memcpy(arr + num, na2, olen); |
| 539 | memset(arr + num + olen, 0, plen - olen); |
| 540 | num += plen; |
| 541 | |
| 542 | return num; |
| 543 | } |
| 544 | |
| 545 | /* SCSI ports VPD page */ |
| 546 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) |
| 547 | { |
| 548 | int num = 0; |
| 549 | int port_a, port_b; |
| 550 | |
| 551 | port_a = target_dev_id + 1; |
| 552 | port_b = port_a + 1; |
| 553 | arr[num++] = 0x0; /* reserved */ |
| 554 | arr[num++] = 0x0; /* reserved */ |
| 555 | arr[num++] = 0x0; |
| 556 | arr[num++] = 0x1; /* relative port 1 (primary) */ |
| 557 | memset(arr + num, 0, 6); |
| 558 | num += 6; |
| 559 | arr[num++] = 0x0; |
| 560 | arr[num++] = 12; /* length tp descriptor */ |
| 561 | /* naa-5 target port identifier (A) */ |
| 562 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 563 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 564 | arr[num++] = 0x0; /* reserved */ |
| 565 | arr[num++] = 0x8; /* length */ |
| 566 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| 567 | arr[num++] = 0x22; |
| 568 | arr[num++] = 0x22; |
| 569 | arr[num++] = 0x20; |
| 570 | arr[num++] = (port_a >> 24); |
| 571 | arr[num++] = (port_a >> 16) & 0xff; |
| 572 | arr[num++] = (port_a >> 8) & 0xff; |
| 573 | arr[num++] = port_a & 0xff; |
| 574 | |
| 575 | arr[num++] = 0x0; /* reserved */ |
| 576 | arr[num++] = 0x0; /* reserved */ |
| 577 | arr[num++] = 0x0; |
| 578 | arr[num++] = 0x2; /* relative port 2 (secondary) */ |
| 579 | memset(arr + num, 0, 6); |
| 580 | num += 6; |
| 581 | arr[num++] = 0x0; |
| 582 | arr[num++] = 12; /* length tp descriptor */ |
| 583 | /* naa-5 target port identifier (B) */ |
| 584 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 585 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 586 | arr[num++] = 0x0; /* reserved */ |
| 587 | arr[num++] = 0x8; /* length */ |
| 588 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| 589 | arr[num++] = 0x22; |
| 590 | arr[num++] = 0x22; |
| 591 | arr[num++] = 0x20; |
| 592 | arr[num++] = (port_b >> 24); |
| 593 | arr[num++] = (port_b >> 16) & 0xff; |
| 594 | arr[num++] = (port_b >> 8) & 0xff; |
| 595 | arr[num++] = port_b & 0xff; |
| 596 | |
| 597 | return num; |
| 598 | } |
| 599 | |
| 600 | |
| 601 | static unsigned char vpd89_data[] = { |
| 602 | /* from 4th byte */ 0,0,0,0, |
| 603 | 'l','i','n','u','x',' ',' ',' ', |
| 604 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', |
| 605 | '1','2','3','4', |
| 606 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, |
| 607 | 0xec,0,0,0, |
| 608 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, |
| 609 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, |
| 610 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, |
| 611 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, |
| 612 | 0x53,0x41, |
| 613 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 614 | 0x20,0x20, |
| 615 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 616 | 0x10,0x80, |
| 617 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, |
| 618 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, |
| 619 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, |
| 620 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, |
| 621 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, |
| 622 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, |
| 623 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, |
| 624 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 625 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 626 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 627 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, |
| 628 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, |
| 629 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, |
| 630 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, |
| 631 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 632 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 633 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 634 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 635 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 636 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 637 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 638 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 639 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 640 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 641 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 642 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, |
| 643 | }; |
| 644 | |
| 645 | static int inquiry_evpd_89(unsigned char * arr) |
| 646 | { |
| 647 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); |
| 648 | return sizeof(vpd89_data); |
| 649 | } |
| 650 | |
| 651 | |
| 652 | static unsigned char vpdb0_data[] = { |
| 653 | /* from 4th byte */ 0,0,0,4, |
| 654 | 0,0,0x4,0, |
| 655 | 0,0,0,64, |
| 656 | }; |
| 657 | |
| 658 | static int inquiry_evpd_b0(unsigned char * arr) |
| 659 | { |
| 660 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
| 661 | if (sdebug_store_sectors > 0x400) { |
| 662 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; |
| 663 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; |
| 664 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; |
| 665 | arr[7] = sdebug_store_sectors & 0xff; |
| 666 | } |
| 667 | return sizeof(vpdb0_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | } |
| 669 | |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 670 | static int inquiry_evpd_b1(unsigned char *arr) |
| 671 | { |
| 672 | memset(arr, 0, 0x3c); |
| 673 | arr[0] = 0; |
| 674 | arr[1] = 1; |
| 675 | |
| 676 | return 0x3c; |
| 677 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | |
| 679 | #define SDEBUG_LONG_INQ_SZ 96 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 680 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | |
| 682 | static int resp_inquiry(struct scsi_cmnd * scp, int target, |
| 683 | struct sdebug_dev_info * devip) |
| 684 | { |
| 685 | unsigned char pq_pdt; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 686 | unsigned char * arr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 688 | int alloc_len, n, ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | |
| 690 | alloc_len = (cmd[3] << 8) + cmd[4]; |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 691 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
| 692 | if (! arr) |
| 693 | return DID_REQUEUE << 16; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 694 | if (devip->wlun) |
| 695 | pq_pdt = 0x1e; /* present, wlun */ |
| 696 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) |
| 697 | pq_pdt = 0x7f; /* not present, no device type */ |
| 698 | else |
| 699 | pq_pdt = (scsi_debug_ptype & 0x1f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | arr[0] = pq_pdt; |
| 701 | if (0x2 & cmd[1]) { /* CMDDT bit set */ |
| 702 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 703 | 0); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 704 | kfree(arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | return check_condition_result; |
| 706 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 707 | int lu_id_num, port_group_id, target_dev_id, len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 708 | char lu_id_str[6]; |
| 709 | int host_no = devip->sdbg_host->shost->host_no; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 711 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
| 712 | (devip->channel & 0x7f); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 713 | if (0 == scsi_debug_vpd_use_hostno) |
| 714 | host_no = 0; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 715 | lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
| 716 | (devip->target * 1000) + devip->lun); |
| 717 | target_dev_id = ((host_no + 1) * 2000) + |
| 718 | (devip->target * 1000) - 3; |
| 719 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | if (0 == cmd[2]) { /* supported vital product data pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 721 | arr[1] = cmd[2]; /*sanity */ |
| 722 | n = 4; |
| 723 | arr[n++] = 0x0; /* this page */ |
| 724 | arr[n++] = 0x80; /* unit serial number */ |
| 725 | arr[n++] = 0x83; /* device identification */ |
| 726 | arr[n++] = 0x84; /* software interface ident. */ |
| 727 | arr[n++] = 0x85; /* management network addresses */ |
| 728 | arr[n++] = 0x86; /* extended inquiry */ |
| 729 | arr[n++] = 0x87; /* mode page policy */ |
| 730 | arr[n++] = 0x88; /* SCSI ports */ |
| 731 | arr[n++] = 0x89; /* ATA information */ |
| 732 | arr[n++] = 0xb0; /* Block limits (SBC) */ |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 733 | arr[n++] = 0xb1; /* Block characteristics (SBC) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 734 | arr[3] = n - 4; /* number of supported VPD pages */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 736 | arr[1] = cmd[2]; /*sanity */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | arr[3] = len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 738 | memcpy(&arr[4], lu_id_str, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | } else if (0x83 == cmd[2]) { /* device identification */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 740 | arr[1] = cmd[2]; /*sanity */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 741 | arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
| 742 | target_dev_id, lu_id_num, |
| 743 | lu_id_str, len); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 744 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
| 745 | arr[1] = cmd[2]; /*sanity */ |
| 746 | arr[3] = inquiry_evpd_84(&arr[4]); |
| 747 | } else if (0x85 == cmd[2]) { /* Management network addresses */ |
| 748 | arr[1] = cmd[2]; /*sanity */ |
| 749 | arr[3] = inquiry_evpd_85(&arr[4]); |
| 750 | } else if (0x86 == cmd[2]) { /* extended inquiry */ |
| 751 | arr[1] = cmd[2]; /*sanity */ |
| 752 | arr[3] = 0x3c; /* number of following entries */ |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 753 | if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) |
| 754 | arr[4] = 0x4; /* SPT: GRD_CHK:1 */ |
| 755 | else if (scsi_debug_dif) |
| 756 | arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ |
| 757 | else |
| 758 | arr[4] = 0x0; /* no protection stuff */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 759 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
| 760 | } else if (0x87 == cmd[2]) { /* mode page policy */ |
| 761 | arr[1] = cmd[2]; /*sanity */ |
| 762 | arr[3] = 0x8; /* number of following entries */ |
| 763 | arr[4] = 0x2; /* disconnect-reconnect mp */ |
| 764 | arr[6] = 0x80; /* mlus, shared */ |
| 765 | arr[8] = 0x18; /* protocol specific lu */ |
| 766 | arr[10] = 0x82; /* mlus, per initiator port */ |
| 767 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ |
| 768 | arr[1] = cmd[2]; /*sanity */ |
| 769 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); |
| 770 | } else if (0x89 == cmd[2]) { /* ATA information */ |
| 771 | arr[1] = cmd[2]; /*sanity */ |
| 772 | n = inquiry_evpd_89(&arr[4]); |
| 773 | arr[2] = (n >> 8); |
| 774 | arr[3] = (n & 0xff); |
| 775 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ |
| 776 | arr[1] = cmd[2]; /*sanity */ |
| 777 | arr[3] = inquiry_evpd_b0(&arr[4]); |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 778 | } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */ |
| 779 | arr[1] = cmd[2]; /*sanity */ |
| 780 | arr[3] = inquiry_evpd_b1(&arr[4]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | } else { |
| 782 | /* Illegal request, invalid field in cdb */ |
| 783 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 784 | INVALID_FIELD_IN_CDB, 0); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 785 | kfree(arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | return check_condition_result; |
| 787 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 788 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 789 | ret = fill_from_dev_buffer(scp, arr, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 790 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 791 | kfree(arr); |
| 792 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | } |
| 794 | /* drops through here for a standard inquiry */ |
| 795 | arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */ |
| 796 | arr[2] = scsi_debug_scsi_level; |
| 797 | arr[3] = 2; /* response_data_format==2 */ |
| 798 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 799 | arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 800 | if (0 == scsi_debug_vpd_use_hostno) |
| 801 | arr[5] = 0x10; /* claim: implicit TGPS */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 802 | arr[6] = 0x10; /* claim: MultiP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 804 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | memcpy(&arr[8], inq_vendor_id, 8); |
| 806 | memcpy(&arr[16], inq_product_id, 16); |
| 807 | memcpy(&arr[32], inq_product_rev, 4); |
| 808 | /* version descriptors (2 bytes each) follow */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 809 | arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ |
| 810 | arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ |
| 811 | n = 62; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | if (scsi_debug_ptype == 0) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 813 | arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | } else if (scsi_debug_ptype == 1) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 815 | arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 817 | arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 818 | ret = fill_from_dev_buffer(scp, arr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 820 | kfree(arr); |
| 821 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | } |
| 823 | |
| 824 | static int resp_requests(struct scsi_cmnd * scp, |
| 825 | struct sdebug_dev_info * devip) |
| 826 | { |
| 827 | unsigned char * sbuff; |
| 828 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 829 | unsigned char arr[SDEBUG_SENSE_LEN]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 830 | int want_dsense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | int len = 18; |
| 832 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 833 | memset(arr, 0, sizeof(arr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | if (devip->reset == 1) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 835 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
| 836 | want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | sbuff = devip->sense_buff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 838 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
| 839 | if (want_dsense) { |
| 840 | arr[0] = 0x72; |
| 841 | arr[1] = 0x0; /* NO_SENSE in sense_key */ |
| 842 | arr[2] = THRESHOLD_EXCEEDED; |
| 843 | arr[3] = 0xff; /* TEST set and MRIE==6 */ |
| 844 | } else { |
| 845 | arr[0] = 0x70; |
| 846 | arr[2] = 0x0; /* NO_SENSE in sense_key */ |
| 847 | arr[7] = 0xa; /* 18 byte sense buffer */ |
| 848 | arr[12] = THRESHOLD_EXCEEDED; |
| 849 | arr[13] = 0xff; /* TEST set and MRIE==6 */ |
| 850 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 851 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | memcpy(arr, sbuff, SDEBUG_SENSE_LEN); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 853 | if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
| 854 | /* DESC bit set and sense_buff in fixed format */ |
| 855 | memset(arr, 0, sizeof(arr)); |
| 856 | arr[0] = 0x72; |
| 857 | arr[1] = sbuff[2]; /* sense key */ |
| 858 | arr[2] = sbuff[12]; /* asc */ |
| 859 | arr[3] = sbuff[13]; /* ascq */ |
| 860 | len = 8; |
| 861 | } |
| 862 | } |
| 863 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | return fill_from_dev_buffer(scp, arr, len); |
| 865 | } |
| 866 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 867 | static int resp_start_stop(struct scsi_cmnd * scp, |
| 868 | struct sdebug_dev_info * devip) |
| 869 | { |
| 870 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 871 | int power_cond, errsts, start; |
| 872 | |
| 873 | if ((errsts = check_readiness(scp, 1, devip))) |
| 874 | return errsts; |
| 875 | power_cond = (cmd[4] & 0xf0) >> 4; |
| 876 | if (power_cond) { |
| 877 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 878 | 0); |
| 879 | return check_condition_result; |
| 880 | } |
| 881 | start = cmd[4] & 1; |
| 882 | if (start == devip->stopped) |
| 883 | devip->stopped = !start; |
| 884 | return 0; |
| 885 | } |
| 886 | |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 887 | static sector_t get_sdebug_capacity(void) |
| 888 | { |
| 889 | if (scsi_debug_virtual_gb > 0) |
| 890 | return 2048 * 1024 * scsi_debug_virtual_gb; |
| 891 | else |
| 892 | return sdebug_store_sectors; |
| 893 | } |
| 894 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | #define SDEBUG_READCAP_ARR_SZ 8 |
| 896 | static int resp_readcap(struct scsi_cmnd * scp, |
| 897 | struct sdebug_dev_info * devip) |
| 898 | { |
| 899 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 900 | unsigned int capac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | int errsts; |
| 902 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 903 | if ((errsts = check_readiness(scp, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | return errsts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 905 | /* following just in case virtual_gb changed */ |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 906 | sdebug_capacity = get_sdebug_capacity(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 908 | if (sdebug_capacity < 0xffffffff) { |
| 909 | capac = (unsigned int)sdebug_capacity - 1; |
| 910 | arr[0] = (capac >> 24); |
| 911 | arr[1] = (capac >> 16) & 0xff; |
| 912 | arr[2] = (capac >> 8) & 0xff; |
| 913 | arr[3] = capac & 0xff; |
| 914 | } else { |
| 915 | arr[0] = 0xff; |
| 916 | arr[1] = 0xff; |
| 917 | arr[2] = 0xff; |
| 918 | arr[3] = 0xff; |
| 919 | } |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 920 | arr[6] = (scsi_debug_sector_size >> 8) & 0xff; |
| 921 | arr[7] = scsi_debug_sector_size & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
| 923 | } |
| 924 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 925 | #define SDEBUG_READCAP16_ARR_SZ 32 |
| 926 | static int resp_readcap16(struct scsi_cmnd * scp, |
| 927 | struct sdebug_dev_info * devip) |
| 928 | { |
| 929 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 930 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; |
| 931 | unsigned long long capac; |
| 932 | int errsts, k, alloc_len; |
| 933 | |
| 934 | if ((errsts = check_readiness(scp, 1, devip))) |
| 935 | return errsts; |
| 936 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) |
| 937 | + cmd[13]); |
| 938 | /* following just in case virtual_gb changed */ |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 939 | sdebug_capacity = get_sdebug_capacity(); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 940 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
| 941 | capac = sdebug_capacity - 1; |
| 942 | for (k = 0; k < 8; ++k, capac >>= 8) |
| 943 | arr[7 - k] = capac & 0xff; |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 944 | arr[8] = (scsi_debug_sector_size >> 24) & 0xff; |
| 945 | arr[9] = (scsi_debug_sector_size >> 16) & 0xff; |
| 946 | arr[10] = (scsi_debug_sector_size >> 8) & 0xff; |
| 947 | arr[11] = scsi_debug_sector_size & 0xff; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 948 | |
| 949 | if (scsi_debug_dif) { |
| 950 | arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */ |
| 951 | arr[12] |= 1; /* PROT_EN */ |
| 952 | } |
| 953 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 954 | return fill_from_dev_buffer(scp, arr, |
| 955 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); |
| 956 | } |
| 957 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 958 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
| 959 | |
| 960 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, |
| 961 | struct sdebug_dev_info * devip) |
| 962 | { |
| 963 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 964 | unsigned char * arr; |
| 965 | int host_no = devip->sdbg_host->shost->host_no; |
| 966 | int n, ret, alen, rlen; |
| 967 | int port_group_a, port_group_b, port_a, port_b; |
| 968 | |
| 969 | alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) |
| 970 | + cmd[9]); |
| 971 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 972 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
| 973 | if (! arr) |
| 974 | return DID_REQUEUE << 16; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 975 | /* |
| 976 | * EVPD page 0x88 states we have two ports, one |
| 977 | * real and a fake port with no device connected. |
| 978 | * So we create two port groups with one port each |
| 979 | * and set the group with port B to unavailable. |
| 980 | */ |
| 981 | port_a = 0x1; /* relative port A */ |
| 982 | port_b = 0x2; /* relative port B */ |
| 983 | port_group_a = (((host_no + 1) & 0x7f) << 8) + |
| 984 | (devip->channel & 0x7f); |
| 985 | port_group_b = (((host_no + 1) & 0x7f) << 8) + |
| 986 | (devip->channel & 0x7f) + 0x80; |
| 987 | |
| 988 | /* |
| 989 | * The asymmetric access state is cycled according to the host_id. |
| 990 | */ |
| 991 | n = 4; |
| 992 | if (0 == scsi_debug_vpd_use_hostno) { |
| 993 | arr[n++] = host_no % 3; /* Asymm access state */ |
| 994 | arr[n++] = 0x0F; /* claim: all states are supported */ |
| 995 | } else { |
| 996 | arr[n++] = 0x0; /* Active/Optimized path */ |
| 997 | arr[n++] = 0x01; /* claim: only support active/optimized paths */ |
| 998 | } |
| 999 | arr[n++] = (port_group_a >> 8) & 0xff; |
| 1000 | arr[n++] = port_group_a & 0xff; |
| 1001 | arr[n++] = 0; /* Reserved */ |
| 1002 | arr[n++] = 0; /* Status code */ |
| 1003 | arr[n++] = 0; /* Vendor unique */ |
| 1004 | arr[n++] = 0x1; /* One port per group */ |
| 1005 | arr[n++] = 0; /* Reserved */ |
| 1006 | arr[n++] = 0; /* Reserved */ |
| 1007 | arr[n++] = (port_a >> 8) & 0xff; |
| 1008 | arr[n++] = port_a & 0xff; |
| 1009 | arr[n++] = 3; /* Port unavailable */ |
| 1010 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ |
| 1011 | arr[n++] = (port_group_b >> 8) & 0xff; |
| 1012 | arr[n++] = port_group_b & 0xff; |
| 1013 | arr[n++] = 0; /* Reserved */ |
| 1014 | arr[n++] = 0; /* Status code */ |
| 1015 | arr[n++] = 0; /* Vendor unique */ |
| 1016 | arr[n++] = 0x1; /* One port per group */ |
| 1017 | arr[n++] = 0; /* Reserved */ |
| 1018 | arr[n++] = 0; /* Reserved */ |
| 1019 | arr[n++] = (port_b >> 8) & 0xff; |
| 1020 | arr[n++] = port_b & 0xff; |
| 1021 | |
| 1022 | rlen = n - 4; |
| 1023 | arr[0] = (rlen >> 24) & 0xff; |
| 1024 | arr[1] = (rlen >> 16) & 0xff; |
| 1025 | arr[2] = (rlen >> 8) & 0xff; |
| 1026 | arr[3] = rlen & 0xff; |
| 1027 | |
| 1028 | /* |
| 1029 | * Return the smallest value of either |
| 1030 | * - The allocated length |
| 1031 | * - The constructed command length |
| 1032 | * - The maximum array size |
| 1033 | */ |
| 1034 | rlen = min(alen,n); |
| 1035 | ret = fill_from_dev_buffer(scp, arr, |
| 1036 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); |
| 1037 | kfree(arr); |
| 1038 | return ret; |
| 1039 | } |
| 1040 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | /* <<Following mode page info copied from ST318451LW>> */ |
| 1042 | |
| 1043 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) |
| 1044 | { /* Read-Write Error Recovery page for mode_sense */ |
| 1045 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, |
| 1046 | 5, 0, 0xff, 0xff}; |
| 1047 | |
| 1048 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); |
| 1049 | if (1 == pcontrol) |
| 1050 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); |
| 1051 | return sizeof(err_recov_pg); |
| 1052 | } |
| 1053 | |
| 1054 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) |
| 1055 | { /* Disconnect-Reconnect page for mode_sense */ |
| 1056 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, |
| 1057 | 0, 0, 0, 0, 0, 0, 0, 0}; |
| 1058 | |
| 1059 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); |
| 1060 | if (1 == pcontrol) |
| 1061 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); |
| 1062 | return sizeof(disconnect_pg); |
| 1063 | } |
| 1064 | |
| 1065 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) |
| 1066 | { /* Format device page for mode_sense */ |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1067 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
| 1068 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1069 | 0, 0, 0, 0, 0x40, 0, 0, 0}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1071 | memcpy(p, format_pg, sizeof(format_pg)); |
| 1072 | p[10] = (sdebug_sectors_per >> 8) & 0xff; |
| 1073 | p[11] = sdebug_sectors_per & 0xff; |
| 1074 | p[12] = (scsi_debug_sector_size >> 8) & 0xff; |
| 1075 | p[13] = scsi_debug_sector_size & 0xff; |
| 1076 | if (DEV_REMOVEABLE(target)) |
| 1077 | p[20] |= 0x20; /* should agree with INQUIRY */ |
| 1078 | if (1 == pcontrol) |
| 1079 | memset(p + 2, 0, sizeof(format_pg) - 2); |
| 1080 | return sizeof(format_pg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | } |
| 1082 | |
| 1083 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) |
| 1084 | { /* Caching page for mode_sense */ |
| 1085 | unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, |
| 1086 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; |
| 1087 | |
| 1088 | memcpy(p, caching_pg, sizeof(caching_pg)); |
| 1089 | if (1 == pcontrol) |
| 1090 | memset(p + 2, 0, sizeof(caching_pg) - 2); |
| 1091 | return sizeof(caching_pg); |
| 1092 | } |
| 1093 | |
| 1094 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) |
| 1095 | { /* Control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1096 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
| 1097 | 0, 0, 0, 0}; |
| 1098 | unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | 0, 0, 0x2, 0x4b}; |
| 1100 | |
| 1101 | if (scsi_debug_dsense) |
| 1102 | ctrl_m_pg[2] |= 0x4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1103 | else |
| 1104 | ctrl_m_pg[2] &= ~0x4; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 1105 | |
| 1106 | if (scsi_debug_ato) |
| 1107 | ctrl_m_pg[5] |= 0x80; /* ATO=1 */ |
| 1108 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1109 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
| 1110 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1111 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
| 1112 | else if (2 == pcontrol) |
| 1113 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | return sizeof(ctrl_m_pg); |
| 1115 | } |
| 1116 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1117 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
| 1119 | { /* Informational Exceptions control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1120 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
| 1121 | 0, 0, 0x0, 0x0}; |
| 1122 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 1123 | 0, 0, 0x0, 0x0}; |
| 1124 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
| 1126 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1127 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
| 1128 | else if (2 == pcontrol) |
| 1129 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | return sizeof(iec_m_pg); |
| 1131 | } |
| 1132 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1133 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
| 1134 | { /* SAS SSP mode page - short format for mode_sense */ |
| 1135 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, |
| 1136 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; |
| 1137 | |
| 1138 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); |
| 1139 | if (1 == pcontrol) |
| 1140 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); |
| 1141 | return sizeof(sas_sf_m_pg); |
| 1142 | } |
| 1143 | |
| 1144 | |
| 1145 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, |
| 1146 | int target_dev_id) |
| 1147 | { /* SAS phy control and discover mode page for mode_sense */ |
| 1148 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, |
| 1149 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 1150 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 1151 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 1152 | 0x2, 0, 0, 0, 0, 0, 0, 0, |
| 1153 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1154 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1155 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 1156 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 1157 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 1158 | 0x3, 0, 0, 0, 0, 0, 0, 0, |
| 1159 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1160 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1161 | }; |
| 1162 | int port_a, port_b; |
| 1163 | |
| 1164 | port_a = target_dev_id + 1; |
| 1165 | port_b = port_a + 1; |
| 1166 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); |
| 1167 | p[20] = (port_a >> 24); |
| 1168 | p[21] = (port_a >> 16) & 0xff; |
| 1169 | p[22] = (port_a >> 8) & 0xff; |
| 1170 | p[23] = port_a & 0xff; |
| 1171 | p[48 + 20] = (port_b >> 24); |
| 1172 | p[48 + 21] = (port_b >> 16) & 0xff; |
| 1173 | p[48 + 22] = (port_b >> 8) & 0xff; |
| 1174 | p[48 + 23] = port_b & 0xff; |
| 1175 | if (1 == pcontrol) |
| 1176 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); |
| 1177 | return sizeof(sas_pcd_m_pg); |
| 1178 | } |
| 1179 | |
| 1180 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) |
| 1181 | { /* SAS SSP shared protocol specific port mode subpage */ |
| 1182 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, |
| 1183 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1184 | }; |
| 1185 | |
| 1186 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); |
| 1187 | if (1 == pcontrol) |
| 1188 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); |
| 1189 | return sizeof(sas_sha_m_pg); |
| 1190 | } |
| 1191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | #define SDEBUG_MAX_MSENSE_SZ 256 |
| 1193 | |
| 1194 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, |
| 1195 | struct sdebug_dev_info * devip) |
| 1196 | { |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1197 | unsigned char dbd, llbaa; |
| 1198 | int pcontrol, pcode, subpcode, bd_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | unsigned char dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1200 | int k, alloc_len, msense_6, offset, len, errsts, target_dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | unsigned char * ap; |
| 1202 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; |
| 1203 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1204 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1205 | if ((errsts = check_readiness(scp, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | return errsts; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1207 | dbd = !!(cmd[1] & 0x8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 1209 | pcode = cmd[2] & 0x3f; |
| 1210 | subpcode = cmd[3]; |
| 1211 | msense_6 = (MODE_SENSE == cmd[0]); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1212 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
| 1213 | if ((0 == scsi_debug_ptype) && (0 == dbd)) |
| 1214 | bd_len = llbaa ? 16 : 8; |
| 1215 | else |
| 1216 | bd_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
| 1218 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); |
| 1219 | if (0x3 == pcontrol) { /* Saving values not supported */ |
| 1220 | mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, |
| 1221 | 0); |
| 1222 | return check_condition_result; |
| 1223 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1224 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
| 1225 | (devip->target * 1000) - 3; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1226 | /* set DPOFUA bit for disks */ |
| 1227 | if (0 == scsi_debug_ptype) |
| 1228 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; |
| 1229 | else |
| 1230 | dev_spec = 0x0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | if (msense_6) { |
| 1232 | arr[2] = dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1233 | arr[3] = bd_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | offset = 4; |
| 1235 | } else { |
| 1236 | arr[3] = dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1237 | if (16 == bd_len) |
| 1238 | arr[4] = 0x1; /* set LONGLBA bit */ |
| 1239 | arr[7] = bd_len; /* assume 255 or less */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1240 | offset = 8; |
| 1241 | } |
| 1242 | ap = arr + offset; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 1243 | if ((bd_len > 0) && (!sdebug_capacity)) |
| 1244 | sdebug_capacity = get_sdebug_capacity(); |
| 1245 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1246 | if (8 == bd_len) { |
| 1247 | if (sdebug_capacity > 0xfffffffe) { |
| 1248 | ap[0] = 0xff; |
| 1249 | ap[1] = 0xff; |
| 1250 | ap[2] = 0xff; |
| 1251 | ap[3] = 0xff; |
| 1252 | } else { |
| 1253 | ap[0] = (sdebug_capacity >> 24) & 0xff; |
| 1254 | ap[1] = (sdebug_capacity >> 16) & 0xff; |
| 1255 | ap[2] = (sdebug_capacity >> 8) & 0xff; |
| 1256 | ap[3] = sdebug_capacity & 0xff; |
| 1257 | } |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1258 | ap[6] = (scsi_debug_sector_size >> 8) & 0xff; |
| 1259 | ap[7] = scsi_debug_sector_size & 0xff; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1260 | offset += bd_len; |
| 1261 | ap = arr + offset; |
| 1262 | } else if (16 == bd_len) { |
| 1263 | unsigned long long capac = sdebug_capacity; |
| 1264 | |
| 1265 | for (k = 0; k < 8; ++k, capac >>= 8) |
| 1266 | ap[7 - k] = capac & 0xff; |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1267 | ap[12] = (scsi_debug_sector_size >> 24) & 0xff; |
| 1268 | ap[13] = (scsi_debug_sector_size >> 16) & 0xff; |
| 1269 | ap[14] = (scsi_debug_sector_size >> 8) & 0xff; |
| 1270 | ap[15] = scsi_debug_sector_size & 0xff; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1271 | offset += bd_len; |
| 1272 | ap = arr + offset; |
| 1273 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1275 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
| 1276 | /* TODO: Control Extension page */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1278 | 0); |
| 1279 | return check_condition_result; |
| 1280 | } |
| 1281 | switch (pcode) { |
| 1282 | case 0x1: /* Read-Write error recovery page, direct access */ |
| 1283 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 1284 | offset += len; |
| 1285 | break; |
| 1286 | case 0x2: /* Disconnect-Reconnect page, all devices */ |
| 1287 | len = resp_disconnect_pg(ap, pcontrol, target); |
| 1288 | offset += len; |
| 1289 | break; |
| 1290 | case 0x3: /* Format device page, direct access */ |
| 1291 | len = resp_format_pg(ap, pcontrol, target); |
| 1292 | offset += len; |
| 1293 | break; |
| 1294 | case 0x8: /* Caching page, direct access */ |
| 1295 | len = resp_caching_pg(ap, pcontrol, target); |
| 1296 | offset += len; |
| 1297 | break; |
| 1298 | case 0xa: /* Control Mode page, all devices */ |
| 1299 | len = resp_ctrl_m_pg(ap, pcontrol, target); |
| 1300 | offset += len; |
| 1301 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1302 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
| 1303 | if ((subpcode > 0x2) && (subpcode < 0xff)) { |
| 1304 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1305 | INVALID_FIELD_IN_CDB, 0); |
| 1306 | return check_condition_result; |
| 1307 | } |
| 1308 | len = 0; |
| 1309 | if ((0x0 == subpcode) || (0xff == subpcode)) |
| 1310 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 1311 | if ((0x1 == subpcode) || (0xff == subpcode)) |
| 1312 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, |
| 1313 | target_dev_id); |
| 1314 | if ((0x2 == subpcode) || (0xff == subpcode)) |
| 1315 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 1316 | offset += len; |
| 1317 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
| 1319 | len = resp_iec_m_pg(ap, pcontrol, target); |
| 1320 | offset += len; |
| 1321 | break; |
| 1322 | case 0x3f: /* Read all Mode pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1323 | if ((0 == subpcode) || (0xff == subpcode)) { |
| 1324 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 1325 | len += resp_disconnect_pg(ap + len, pcontrol, target); |
| 1326 | len += resp_format_pg(ap + len, pcontrol, target); |
| 1327 | len += resp_caching_pg(ap + len, pcontrol, target); |
| 1328 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); |
| 1329 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 1330 | if (0xff == subpcode) { |
| 1331 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, |
| 1332 | target, target_dev_id); |
| 1333 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 1334 | } |
| 1335 | len += resp_iec_m_pg(ap + len, pcontrol, target); |
| 1336 | } else { |
| 1337 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1338 | INVALID_FIELD_IN_CDB, 0); |
| 1339 | return check_condition_result; |
| 1340 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | offset += len; |
| 1342 | break; |
| 1343 | default: |
| 1344 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1345 | 0); |
| 1346 | return check_condition_result; |
| 1347 | } |
| 1348 | if (msense_6) |
| 1349 | arr[0] = offset - 1; |
| 1350 | else { |
| 1351 | arr[0] = ((offset - 2) >> 8) & 0xff; |
| 1352 | arr[1] = (offset - 2) & 0xff; |
| 1353 | } |
| 1354 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); |
| 1355 | } |
| 1356 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1357 | #define SDEBUG_MAX_MSELECT_SZ 512 |
| 1358 | |
| 1359 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, |
| 1360 | struct sdebug_dev_info * devip) |
| 1361 | { |
| 1362 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; |
| 1363 | int param_len, res, errsts, mpage; |
| 1364 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; |
| 1365 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1366 | |
| 1367 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1368 | return errsts; |
| 1369 | memset(arr, 0, sizeof(arr)); |
| 1370 | pf = cmd[1] & 0x10; |
| 1371 | sp = cmd[1] & 0x1; |
| 1372 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); |
| 1373 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { |
| 1374 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1375 | INVALID_FIELD_IN_CDB, 0); |
| 1376 | return check_condition_result; |
| 1377 | } |
| 1378 | res = fetch_to_dev_buffer(scp, arr, param_len); |
| 1379 | if (-1 == res) |
| 1380 | return (DID_ERROR << 16); |
| 1381 | else if ((res < param_len) && |
| 1382 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
| 1383 | printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " |
| 1384 | " IO sent=%d bytes\n", param_len, res); |
| 1385 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); |
| 1386 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1387 | if (md_len > 2) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1388 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1389 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1390 | return check_condition_result; |
| 1391 | } |
| 1392 | off = bd_len + (mselect6 ? 4 : 8); |
| 1393 | mpage = arr[off] & 0x3f; |
| 1394 | ps = !!(arr[off] & 0x80); |
| 1395 | if (ps) { |
| 1396 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1397 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1398 | return check_condition_result; |
| 1399 | } |
| 1400 | spf = !!(arr[off] & 0x40); |
| 1401 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : |
| 1402 | (arr[off + 1] + 2); |
| 1403 | if ((pg_len + off) > param_len) { |
| 1404 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1405 | PARAMETER_LIST_LENGTH_ERR, 0); |
| 1406 | return check_condition_result; |
| 1407 | } |
| 1408 | switch (mpage) { |
| 1409 | case 0xa: /* Control Mode page */ |
| 1410 | if (ctrl_m_pg[1] == arr[off + 1]) { |
| 1411 | memcpy(ctrl_m_pg + 2, arr + off + 2, |
| 1412 | sizeof(ctrl_m_pg) - 2); |
| 1413 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); |
| 1414 | return 0; |
| 1415 | } |
| 1416 | break; |
| 1417 | case 0x1c: /* Informational Exceptions Mode page */ |
| 1418 | if (iec_m_pg[1] == arr[off + 1]) { |
| 1419 | memcpy(iec_m_pg + 2, arr + off + 2, |
| 1420 | sizeof(iec_m_pg) - 2); |
| 1421 | return 0; |
| 1422 | } |
| 1423 | break; |
| 1424 | default: |
| 1425 | break; |
| 1426 | } |
| 1427 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1428 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1429 | return check_condition_result; |
| 1430 | } |
| 1431 | |
| 1432 | static int resp_temp_l_pg(unsigned char * arr) |
| 1433 | { |
| 1434 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, |
| 1435 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, |
| 1436 | }; |
| 1437 | |
| 1438 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); |
| 1439 | return sizeof(temp_l_pg); |
| 1440 | } |
| 1441 | |
| 1442 | static int resp_ie_l_pg(unsigned char * arr) |
| 1443 | { |
| 1444 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, |
| 1445 | }; |
| 1446 | |
| 1447 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); |
| 1448 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ |
| 1449 | arr[4] = THRESHOLD_EXCEEDED; |
| 1450 | arr[5] = 0xff; |
| 1451 | } |
| 1452 | return sizeof(ie_l_pg); |
| 1453 | } |
| 1454 | |
| 1455 | #define SDEBUG_MAX_LSENSE_SZ 512 |
| 1456 | |
| 1457 | static int resp_log_sense(struct scsi_cmnd * scp, |
| 1458 | struct sdebug_dev_info * devip) |
| 1459 | { |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1460 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1461 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
| 1462 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1463 | |
| 1464 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1465 | return errsts; |
| 1466 | memset(arr, 0, sizeof(arr)); |
| 1467 | ppc = cmd[1] & 0x2; |
| 1468 | sp = cmd[1] & 0x1; |
| 1469 | if (ppc || sp) { |
| 1470 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1471 | INVALID_FIELD_IN_CDB, 0); |
| 1472 | return check_condition_result; |
| 1473 | } |
| 1474 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 1475 | pcode = cmd[2] & 0x3f; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1476 | subpcode = cmd[3] & 0xff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1477 | alloc_len = (cmd[7] << 8) + cmd[8]; |
| 1478 | arr[0] = pcode; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1479 | if (0 == subpcode) { |
| 1480 | switch (pcode) { |
| 1481 | case 0x0: /* Supported log pages log page */ |
| 1482 | n = 4; |
| 1483 | arr[n++] = 0x0; /* this page */ |
| 1484 | arr[n++] = 0xd; /* Temperature */ |
| 1485 | arr[n++] = 0x2f; /* Informational exceptions */ |
| 1486 | arr[3] = n - 4; |
| 1487 | break; |
| 1488 | case 0xd: /* Temperature log page */ |
| 1489 | arr[3] = resp_temp_l_pg(arr + 4); |
| 1490 | break; |
| 1491 | case 0x2f: /* Informational exceptions log page */ |
| 1492 | arr[3] = resp_ie_l_pg(arr + 4); |
| 1493 | break; |
| 1494 | default: |
| 1495 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1496 | INVALID_FIELD_IN_CDB, 0); |
| 1497 | return check_condition_result; |
| 1498 | } |
| 1499 | } else if (0xff == subpcode) { |
| 1500 | arr[0] |= 0x40; |
| 1501 | arr[1] = subpcode; |
| 1502 | switch (pcode) { |
| 1503 | case 0x0: /* Supported log pages and subpages log page */ |
| 1504 | n = 4; |
| 1505 | arr[n++] = 0x0; |
| 1506 | arr[n++] = 0x0; /* 0,0 page */ |
| 1507 | arr[n++] = 0x0; |
| 1508 | arr[n++] = 0xff; /* this page */ |
| 1509 | arr[n++] = 0xd; |
| 1510 | arr[n++] = 0x0; /* Temperature */ |
| 1511 | arr[n++] = 0x2f; |
| 1512 | arr[n++] = 0x0; /* Informational exceptions */ |
| 1513 | arr[3] = n - 4; |
| 1514 | break; |
| 1515 | case 0xd: /* Temperature subpages */ |
| 1516 | n = 4; |
| 1517 | arr[n++] = 0xd; |
| 1518 | arr[n++] = 0x0; /* Temperature */ |
| 1519 | arr[3] = n - 4; |
| 1520 | break; |
| 1521 | case 0x2f: /* Informational exceptions subpages */ |
| 1522 | n = 4; |
| 1523 | arr[n++] = 0x2f; |
| 1524 | arr[n++] = 0x0; /* Informational exceptions */ |
| 1525 | arr[3] = n - 4; |
| 1526 | break; |
| 1527 | default: |
| 1528 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1529 | INVALID_FIELD_IN_CDB, 0); |
| 1530 | return check_condition_result; |
| 1531 | } |
| 1532 | } else { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1533 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1534 | INVALID_FIELD_IN_CDB, 0); |
| 1535 | return check_condition_result; |
| 1536 | } |
| 1537 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
| 1538 | return fill_from_dev_buffer(scp, arr, |
| 1539 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
| 1540 | } |
| 1541 | |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1542 | static int check_device_access_params(struct sdebug_dev_info *devi, |
| 1543 | unsigned long long lba, unsigned int num) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1544 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1545 | if (lba + num > sdebug_capacity) { |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1546 | mk_sense_buffer(devi, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | return check_condition_result; |
| 1548 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1549 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 1550 | if (num > sdebug_store_sectors) { |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1551 | mk_sense_buffer(devi, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1552 | return check_condition_result; |
| 1553 | } |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1554 | return 0; |
| 1555 | } |
| 1556 | |
| 1557 | static int do_device_access(struct scsi_cmnd *scmd, |
| 1558 | struct sdebug_dev_info *devi, |
| 1559 | unsigned long long lba, unsigned int num, int write) |
| 1560 | { |
| 1561 | int ret; |
| 1562 | unsigned int block, rest = 0; |
| 1563 | int (*func)(struct scsi_cmnd *, unsigned char *, int); |
| 1564 | |
| 1565 | func = write ? fetch_to_dev_buffer : fill_from_dev_buffer; |
| 1566 | |
| 1567 | block = do_div(lba, sdebug_store_sectors); |
| 1568 | if (block + num > sdebug_store_sectors) |
| 1569 | rest = block + num - sdebug_store_sectors; |
| 1570 | |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1571 | ret = func(scmd, fake_storep + (block * scsi_debug_sector_size), |
| 1572 | (num - rest) * scsi_debug_sector_size); |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1573 | if (!ret && rest) |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1574 | ret = func(scmd, fake_storep, rest * scsi_debug_sector_size); |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1575 | |
| 1576 | return ret; |
| 1577 | } |
| 1578 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 1579 | static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, |
| 1580 | unsigned int sectors) |
| 1581 | { |
| 1582 | unsigned int i, resid; |
| 1583 | struct scatterlist *psgl; |
| 1584 | struct sd_dif_tuple *sdt; |
| 1585 | sector_t sector; |
| 1586 | sector_t tmp_sec = start_sec; |
| 1587 | void *paddr; |
| 1588 | |
| 1589 | start_sec = do_div(tmp_sec, sdebug_store_sectors); |
| 1590 | |
| 1591 | sdt = (struct sd_dif_tuple *)(dif_storep + dif_offset(start_sec)); |
| 1592 | |
| 1593 | for (i = 0 ; i < sectors ; i++) { |
| 1594 | u16 csum; |
| 1595 | |
| 1596 | if (sdt[i].app_tag == 0xffff) |
| 1597 | continue; |
| 1598 | |
| 1599 | sector = start_sec + i; |
| 1600 | |
| 1601 | switch (scsi_debug_guard) { |
| 1602 | case 1: |
| 1603 | csum = ip_compute_csum(fake_storep + |
| 1604 | sector * scsi_debug_sector_size, |
| 1605 | scsi_debug_sector_size); |
| 1606 | break; |
| 1607 | case 0: |
| 1608 | csum = crc_t10dif(fake_storep + |
| 1609 | sector * scsi_debug_sector_size, |
| 1610 | scsi_debug_sector_size); |
| 1611 | csum = cpu_to_be16(csum); |
| 1612 | break; |
| 1613 | default: |
| 1614 | BUG(); |
| 1615 | } |
| 1616 | |
| 1617 | if (sdt[i].guard_tag != csum) { |
| 1618 | printk(KERN_ERR "%s: GUARD check failed on sector %lu" \ |
| 1619 | " rcvd 0x%04x, data 0x%04x\n", __func__, |
| 1620 | (unsigned long)sector, |
| 1621 | be16_to_cpu(sdt[i].guard_tag), |
| 1622 | be16_to_cpu(csum)); |
| 1623 | dif_errors++; |
| 1624 | return 0x01; |
| 1625 | } |
| 1626 | |
| 1627 | if (scsi_debug_dif != SD_DIF_TYPE3_PROTECTION && |
| 1628 | be32_to_cpu(sdt[i].ref_tag) != (sector & 0xffffffff)) { |
| 1629 | printk(KERN_ERR "%s: REF check failed on sector %lu\n", |
| 1630 | __func__, (unsigned long)sector); |
| 1631 | dif_errors++; |
| 1632 | return 0x03; |
| 1633 | } |
| 1634 | } |
| 1635 | |
| 1636 | resid = sectors * 8; /* Bytes of protection data to copy into sgl */ |
| 1637 | sector = start_sec; |
| 1638 | |
| 1639 | scsi_for_each_prot_sg(SCpnt, psgl, scsi_prot_sg_count(SCpnt), i) { |
| 1640 | int len = min(psgl->length, resid); |
| 1641 | |
| 1642 | paddr = kmap_atomic(sg_page(psgl), KM_IRQ0) + psgl->offset; |
| 1643 | memcpy(paddr, dif_storep + dif_offset(sector), len); |
| 1644 | |
| 1645 | sector += len >> 3; |
| 1646 | if (sector >= sdebug_store_sectors) { |
| 1647 | /* Force wrap */ |
| 1648 | tmp_sec = sector; |
| 1649 | sector = do_div(tmp_sec, sdebug_store_sectors); |
| 1650 | } |
| 1651 | resid -= len; |
| 1652 | kunmap_atomic(paddr, KM_IRQ0); |
| 1653 | } |
| 1654 | |
| 1655 | dix_reads++; |
| 1656 | |
| 1657 | return 0; |
| 1658 | } |
| 1659 | |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1660 | static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba, |
| 1661 | unsigned int num, struct sdebug_dev_info *devip) |
| 1662 | { |
| 1663 | unsigned long iflags; |
| 1664 | int ret; |
| 1665 | |
| 1666 | ret = check_device_access_params(devip, lba, num); |
| 1667 | if (ret) |
| 1668 | return ret; |
| 1669 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1670 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1671 | (lba <= OPT_MEDIUM_ERR_ADDR) && |
| 1672 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { |
| 1673 | /* claim unrecoverable read error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1674 | mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, |
| 1675 | 0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1676 | /* set info field and valid bit for fixed descriptor */ |
| 1677 | if (0x70 == (devip->sense_buff[0] & 0x7f)) { |
| 1678 | devip->sense_buff[0] |= 0x80; /* Valid bit */ |
| 1679 | ret = OPT_MEDIUM_ERR_ADDR; |
| 1680 | devip->sense_buff[3] = (ret >> 24) & 0xff; |
| 1681 | devip->sense_buff[4] = (ret >> 16) & 0xff; |
| 1682 | devip->sense_buff[5] = (ret >> 8) & 0xff; |
| 1683 | devip->sense_buff[6] = ret & 0xff; |
| 1684 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1685 | return check_condition_result; |
| 1686 | } |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 1687 | |
| 1688 | /* DIX + T10 DIF */ |
| 1689 | if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { |
| 1690 | int prot_ret = prot_verify_read(SCpnt, lba, num); |
| 1691 | |
| 1692 | if (prot_ret) { |
| 1693 | mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, prot_ret); |
| 1694 | return illegal_condition_result; |
| 1695 | } |
| 1696 | } |
| 1697 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | read_lock_irqsave(&atomic_rw, iflags); |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1699 | ret = do_device_access(SCpnt, devip, lba, num, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | read_unlock_irqrestore(&atomic_rw, iflags); |
| 1701 | return ret; |
| 1702 | } |
| 1703 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 1704 | void dump_sector(unsigned char *buf, int len) |
| 1705 | { |
| 1706 | int i, j; |
| 1707 | |
| 1708 | printk(KERN_ERR ">>> Sector Dump <<<\n"); |
| 1709 | |
| 1710 | for (i = 0 ; i < len ; i += 16) { |
| 1711 | printk(KERN_ERR "%04d: ", i); |
| 1712 | |
| 1713 | for (j = 0 ; j < 16 ; j++) { |
| 1714 | unsigned char c = buf[i+j]; |
| 1715 | if (c >= 0x20 && c < 0x7e) |
| 1716 | printk(" %c ", buf[i+j]); |
| 1717 | else |
| 1718 | printk("%02x ", buf[i+j]); |
| 1719 | } |
| 1720 | |
| 1721 | printk("\n"); |
| 1722 | } |
| 1723 | } |
| 1724 | |
| 1725 | static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, |
| 1726 | unsigned int sectors) |
| 1727 | { |
| 1728 | int i, j, ret; |
| 1729 | struct sd_dif_tuple *sdt; |
| 1730 | struct scatterlist *dsgl = scsi_sglist(SCpnt); |
| 1731 | struct scatterlist *psgl = scsi_prot_sglist(SCpnt); |
| 1732 | void *daddr, *paddr; |
| 1733 | sector_t tmp_sec = start_sec; |
| 1734 | sector_t sector; |
| 1735 | int ppage_offset; |
| 1736 | unsigned short csum; |
| 1737 | |
| 1738 | sector = do_div(tmp_sec, sdebug_store_sectors); |
| 1739 | |
| 1740 | if (((SCpnt->cmnd[1] >> 5) & 7) != 1) { |
| 1741 | printk(KERN_WARNING "scsi_debug: WRPROTECT != 1\n"); |
| 1742 | return 0; |
| 1743 | } |
| 1744 | |
| 1745 | BUG_ON(scsi_sg_count(SCpnt) == 0); |
| 1746 | BUG_ON(scsi_prot_sg_count(SCpnt) == 0); |
| 1747 | |
| 1748 | paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) + psgl->offset; |
| 1749 | ppage_offset = 0; |
| 1750 | |
| 1751 | /* For each data page */ |
| 1752 | scsi_for_each_sg(SCpnt, dsgl, scsi_sg_count(SCpnt), i) { |
| 1753 | daddr = kmap_atomic(sg_page(dsgl), KM_IRQ0) + dsgl->offset; |
| 1754 | |
| 1755 | /* For each sector-sized chunk in data page */ |
| 1756 | for (j = 0 ; j < dsgl->length ; j += scsi_debug_sector_size) { |
| 1757 | |
| 1758 | /* If we're at the end of the current |
| 1759 | * protection page advance to the next one |
| 1760 | */ |
| 1761 | if (ppage_offset >= psgl->length) { |
| 1762 | kunmap_atomic(paddr, KM_IRQ1); |
| 1763 | psgl = sg_next(psgl); |
| 1764 | BUG_ON(psgl == NULL); |
| 1765 | paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) |
| 1766 | + psgl->offset; |
| 1767 | ppage_offset = 0; |
| 1768 | } |
| 1769 | |
| 1770 | sdt = paddr + ppage_offset; |
| 1771 | |
| 1772 | switch (scsi_debug_guard) { |
| 1773 | case 1: |
| 1774 | csum = ip_compute_csum(daddr, |
| 1775 | scsi_debug_sector_size); |
| 1776 | break; |
| 1777 | case 0: |
| 1778 | csum = cpu_to_be16(crc_t10dif(daddr, |
| 1779 | scsi_debug_sector_size)); |
| 1780 | break; |
| 1781 | default: |
| 1782 | BUG(); |
| 1783 | ret = 0; |
| 1784 | goto out; |
| 1785 | } |
| 1786 | |
| 1787 | if (sdt->guard_tag != csum) { |
| 1788 | printk(KERN_ERR |
| 1789 | "%s: GUARD check failed on sector %lu " \ |
| 1790 | "rcvd 0x%04x, calculated 0x%04x\n", |
| 1791 | __func__, (unsigned long)sector, |
| 1792 | be16_to_cpu(sdt->guard_tag), |
| 1793 | be16_to_cpu(csum)); |
| 1794 | ret = 0x01; |
| 1795 | dump_sector(daddr, scsi_debug_sector_size); |
| 1796 | goto out; |
| 1797 | } |
| 1798 | |
| 1799 | if (scsi_debug_dif != SD_DIF_TYPE3_PROTECTION && |
| 1800 | be32_to_cpu(sdt->ref_tag) |
| 1801 | != (start_sec & 0xffffffff)) { |
| 1802 | printk(KERN_ERR |
| 1803 | "%s: REF check failed on sector %lu\n", |
| 1804 | __func__, (unsigned long)sector); |
| 1805 | ret = 0x03; |
| 1806 | dump_sector(daddr, scsi_debug_sector_size); |
| 1807 | goto out; |
| 1808 | } |
| 1809 | |
| 1810 | /* Would be great to copy this in bigger |
| 1811 | * chunks. However, for the sake of |
| 1812 | * correctness we need to verify each sector |
| 1813 | * before writing it to "stable" storage |
| 1814 | */ |
| 1815 | memcpy(dif_storep + dif_offset(sector), sdt, 8); |
| 1816 | |
| 1817 | sector++; |
| 1818 | |
| 1819 | if (sector == sdebug_store_sectors) |
| 1820 | sector = 0; /* Force wrap */ |
| 1821 | |
| 1822 | start_sec++; |
| 1823 | daddr += scsi_debug_sector_size; |
| 1824 | ppage_offset += sizeof(struct sd_dif_tuple); |
| 1825 | } |
| 1826 | |
| 1827 | kunmap_atomic(daddr, KM_IRQ0); |
| 1828 | } |
| 1829 | |
| 1830 | kunmap_atomic(paddr, KM_IRQ1); |
| 1831 | |
| 1832 | dix_writes++; |
| 1833 | |
| 1834 | return 0; |
| 1835 | |
| 1836 | out: |
| 1837 | dif_errors++; |
| 1838 | kunmap_atomic(daddr, KM_IRQ0); |
| 1839 | kunmap_atomic(paddr, KM_IRQ1); |
| 1840 | return ret; |
| 1841 | } |
| 1842 | |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1843 | static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba, |
| 1844 | unsigned int num, struct sdebug_dev_info *devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1845 | { |
| 1846 | unsigned long iflags; |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1847 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1848 | |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1849 | ret = check_device_access_params(devip, lba, num); |
| 1850 | if (ret) |
| 1851 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1852 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 1853 | /* DIX + T10 DIF */ |
| 1854 | if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { |
| 1855 | int prot_ret = prot_verify_write(SCpnt, lba, num); |
| 1856 | |
| 1857 | if (prot_ret) { |
| 1858 | mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, prot_ret); |
| 1859 | return illegal_condition_result; |
| 1860 | } |
| 1861 | } |
| 1862 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | write_lock_irqsave(&atomic_rw, iflags); |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1864 | ret = do_device_access(SCpnt, devip, lba, num, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1865 | write_unlock_irqrestore(&atomic_rw, iflags); |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1866 | if (-1 == ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | return (DID_ERROR << 16); |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1868 | else if ((ret < (num * scsi_debug_sector_size)) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1870 | printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1871 | " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1872 | return 0; |
| 1873 | } |
| 1874 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1875 | #define SDEBUG_RLUN_ARR_SZ 256 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1876 | |
| 1877 | static int resp_report_luns(struct scsi_cmnd * scp, |
| 1878 | struct sdebug_dev_info * devip) |
| 1879 | { |
| 1880 | unsigned int alloc_len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1881 | int lun_cnt, i, upper, num, n, wlun, lun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1882 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1883 | int select_report = (int)cmd[2]; |
| 1884 | struct scsi_lun *one_lun; |
| 1885 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1886 | unsigned char * max_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | |
| 1888 | alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1889 | if ((alloc_len < 4) || (select_report > 2)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1891 | 0); |
| 1892 | return check_condition_result; |
| 1893 | } |
| 1894 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ |
| 1895 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); |
| 1896 | lun_cnt = scsi_debug_max_luns; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1897 | if (1 == select_report) |
| 1898 | lun_cnt = 0; |
| 1899 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) |
| 1900 | --lun_cnt; |
| 1901 | wlun = (select_report > 0) ? 1 : 0; |
| 1902 | num = lun_cnt + wlun; |
| 1903 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; |
| 1904 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; |
| 1905 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / |
| 1906 | sizeof(struct scsi_lun)), num); |
| 1907 | if (n < num) { |
| 1908 | wlun = 0; |
| 1909 | lun_cnt = n; |
| 1910 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | one_lun = (struct scsi_lun *) &arr[8]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1912 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
| 1913 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); |
| 1914 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); |
| 1915 | i++, lun++) { |
| 1916 | upper = (lun >> 8) & 0x3f; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1917 | if (upper) |
| 1918 | one_lun[i].scsi_lun[0] = |
| 1919 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1920 | one_lun[i].scsi_lun[1] = lun & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1921 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1922 | if (wlun) { |
| 1923 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; |
| 1924 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; |
| 1925 | i++; |
| 1926 | } |
| 1927 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1928 | return fill_from_dev_buffer(scp, arr, |
| 1929 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); |
| 1930 | } |
| 1931 | |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 1932 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
| 1933 | unsigned int num, struct sdebug_dev_info *devip) |
| 1934 | { |
| 1935 | int i, j, ret = -1; |
| 1936 | unsigned char *kaddr, *buf; |
| 1937 | unsigned int offset; |
| 1938 | struct scatterlist *sg; |
| 1939 | struct scsi_data_buffer *sdb = scsi_in(scp); |
| 1940 | |
| 1941 | /* better not to use temporary buffer. */ |
| 1942 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); |
| 1943 | if (!buf) |
| 1944 | return ret; |
| 1945 | |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 1946 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 1947 | |
| 1948 | offset = 0; |
| 1949 | for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) { |
| 1950 | kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); |
| 1951 | if (!kaddr) |
| 1952 | goto out; |
| 1953 | |
| 1954 | for (j = 0; j < sg->length; j++) |
| 1955 | *(kaddr + sg->offset + j) ^= *(buf + offset + j); |
| 1956 | |
| 1957 | offset += sg->length; |
| 1958 | kunmap_atomic(kaddr, KM_USER0); |
| 1959 | } |
| 1960 | ret = 0; |
| 1961 | out: |
| 1962 | kfree(buf); |
| 1963 | |
| 1964 | return ret; |
| 1965 | } |
| 1966 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | /* When timer goes off this function is called. */ |
| 1968 | static void timer_intr_handler(unsigned long indx) |
| 1969 | { |
| 1970 | struct sdebug_queued_cmd * sqcp; |
| 1971 | unsigned long iflags; |
| 1972 | |
| 1973 | if (indx >= SCSI_DEBUG_CANQUEUE) { |
| 1974 | printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " |
| 1975 | "large\n"); |
| 1976 | return; |
| 1977 | } |
| 1978 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 1979 | sqcp = &queued_arr[(int)indx]; |
| 1980 | if (! sqcp->in_use) { |
| 1981 | printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected " |
| 1982 | "interrupt\n"); |
| 1983 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 1984 | return; |
| 1985 | } |
| 1986 | sqcp->in_use = 0; |
| 1987 | if (sqcp->done_funct) { |
| 1988 | sqcp->a_cmnd->result = sqcp->scsi_result; |
| 1989 | sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */ |
| 1990 | } |
| 1991 | sqcp->done_funct = NULL; |
| 1992 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 1993 | } |
| 1994 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1995 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 1996 | static struct sdebug_dev_info * |
| 1997 | sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags) |
FUJITA Tomonori | 5cb2fc0 | 2008-03-20 11:09:16 +0900 | [diff] [blame] | 1998 | { |
| 1999 | struct sdebug_dev_info *devip; |
| 2000 | |
| 2001 | devip = kzalloc(sizeof(*devip), flags); |
| 2002 | if (devip) { |
| 2003 | devip->sdbg_host = sdbg_host; |
| 2004 | list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); |
| 2005 | } |
| 2006 | return devip; |
| 2007 | } |
| 2008 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2009 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
| 2010 | { |
| 2011 | struct sdebug_host_info * sdbg_host; |
| 2012 | struct sdebug_dev_info * open_devip = NULL; |
| 2013 | struct sdebug_dev_info * devip = |
| 2014 | (struct sdebug_dev_info *)sdev->hostdata; |
| 2015 | |
| 2016 | if (devip) |
| 2017 | return devip; |
FUJITA Tomonori | d1e4c9c | 2008-03-02 18:30:18 +0900 | [diff] [blame] | 2018 | sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
| 2019 | if (!sdbg_host) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2020 | printk(KERN_ERR "Host info NULL\n"); |
| 2021 | return NULL; |
| 2022 | } |
| 2023 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { |
| 2024 | if ((devip->used) && (devip->channel == sdev->channel) && |
| 2025 | (devip->target == sdev->id) && |
| 2026 | (devip->lun == sdev->lun)) |
| 2027 | return devip; |
| 2028 | else { |
| 2029 | if ((!devip->used) && (!open_devip)) |
| 2030 | open_devip = devip; |
| 2031 | } |
| 2032 | } |
FUJITA Tomonori | 5cb2fc0 | 2008-03-20 11:09:16 +0900 | [diff] [blame] | 2033 | if (!open_devip) { /* try and make a new one */ |
| 2034 | open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); |
| 2035 | if (!open_devip) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2036 | printk(KERN_ERR "%s: out of memory at line %d\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 2037 | __func__, __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2038 | return NULL; |
| 2039 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | } |
FUJITA Tomonori | a75869d | 2008-03-20 11:09:17 +0900 | [diff] [blame] | 2041 | |
| 2042 | open_devip->channel = sdev->channel; |
| 2043 | open_devip->target = sdev->id; |
| 2044 | open_devip->lun = sdev->lun; |
| 2045 | open_devip->sdbg_host = sdbg_host; |
| 2046 | open_devip->reset = 1; |
| 2047 | open_devip->used = 1; |
| 2048 | memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); |
| 2049 | if (scsi_debug_dsense) |
| 2050 | open_devip->sense_buff[0] = 0x72; |
| 2051 | else { |
| 2052 | open_devip->sense_buff[0] = 0x70; |
| 2053 | open_devip->sense_buff[7] = 0xa; |
| 2054 | } |
| 2055 | if (sdev->lun == SAM2_WLUN_REPORT_LUNS) |
| 2056 | open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; |
| 2057 | |
| 2058 | return open_devip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2059 | } |
| 2060 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2061 | static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2062 | { |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2063 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2064 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", |
| 2065 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
Nick Piggin | 75ad23b | 2008-04-29 14:48:33 +0200 | [diff] [blame] | 2066 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2067 | return 0; |
| 2068 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2070 | static int scsi_debug_slave_configure(struct scsi_device *sdp) |
| 2071 | { |
| 2072 | struct sdebug_dev_info *devip; |
FUJITA Tomonori | a34c4e9 | 2008-03-25 09:26:50 +0900 | [diff] [blame] | 2073 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2074 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2075 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", |
| 2076 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
| 2077 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) |
| 2078 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; |
| 2079 | devip = devInfoReg(sdp); |
| 2080 | if (NULL == devip) |
| 2081 | return 1; /* no resources, will be marked offline */ |
| 2082 | sdp->hostdata = devip; |
| 2083 | if (sdp->host->cmd_per_lun) |
| 2084 | scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, |
| 2085 | sdp->host->cmd_per_lun); |
| 2086 | blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); |
| 2087 | return 0; |
| 2088 | } |
| 2089 | |
| 2090 | static void scsi_debug_slave_destroy(struct scsi_device *sdp) |
| 2091 | { |
| 2092 | struct sdebug_dev_info *devip = |
| 2093 | (struct sdebug_dev_info *)sdp->hostdata; |
| 2094 | |
| 2095 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2096 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", |
| 2097 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
| 2098 | if (devip) { |
| 2099 | /* make this slot avaliable for re-use */ |
| 2100 | devip->used = 0; |
| 2101 | sdp->hostdata = NULL; |
| 2102 | } |
| 2103 | } |
| 2104 | |
| 2105 | /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ |
| 2106 | static int stop_queued_cmnd(struct scsi_cmnd *cmnd) |
| 2107 | { |
| 2108 | unsigned long iflags; |
| 2109 | int k; |
| 2110 | struct sdebug_queued_cmd *sqcp; |
| 2111 | |
| 2112 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2113 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2114 | sqcp = &queued_arr[k]; |
| 2115 | if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { |
| 2116 | del_timer_sync(&sqcp->cmnd_timer); |
| 2117 | sqcp->in_use = 0; |
| 2118 | sqcp->a_cmnd = NULL; |
| 2119 | break; |
| 2120 | } |
| 2121 | } |
| 2122 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2123 | return (k < SCSI_DEBUG_CANQUEUE) ? 1 : 0; |
| 2124 | } |
| 2125 | |
| 2126 | /* Deletes (stops) timers of all queued commands */ |
| 2127 | static void stop_all_queued(void) |
| 2128 | { |
| 2129 | unsigned long iflags; |
| 2130 | int k; |
| 2131 | struct sdebug_queued_cmd *sqcp; |
| 2132 | |
| 2133 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2134 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2135 | sqcp = &queued_arr[k]; |
| 2136 | if (sqcp->in_use && sqcp->a_cmnd) { |
| 2137 | del_timer_sync(&sqcp->cmnd_timer); |
| 2138 | sqcp->in_use = 0; |
| 2139 | sqcp->a_cmnd = NULL; |
| 2140 | } |
| 2141 | } |
| 2142 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2143 | } |
| 2144 | |
| 2145 | static int scsi_debug_abort(struct scsi_cmnd * SCpnt) |
| 2146 | { |
| 2147 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2148 | printk(KERN_INFO "scsi_debug: abort\n"); |
| 2149 | ++num_aborts; |
| 2150 | stop_queued_cmnd(SCpnt); |
| 2151 | return SUCCESS; |
| 2152 | } |
| 2153 | |
| 2154 | static int scsi_debug_biosparam(struct scsi_device *sdev, |
| 2155 | struct block_device * bdev, sector_t capacity, int *info) |
| 2156 | { |
| 2157 | int res; |
| 2158 | unsigned char *buf; |
| 2159 | |
| 2160 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2161 | printk(KERN_INFO "scsi_debug: biosparam\n"); |
| 2162 | buf = scsi_bios_ptable(bdev); |
| 2163 | if (buf) { |
| 2164 | res = scsi_partsize(buf, capacity, |
| 2165 | &info[2], &info[0], &info[1]); |
| 2166 | kfree(buf); |
| 2167 | if (! res) |
| 2168 | return res; |
| 2169 | } |
| 2170 | info[0] = sdebug_heads; |
| 2171 | info[1] = sdebug_sectors_per; |
| 2172 | info[2] = sdebug_cylinders_per; |
| 2173 | return 0; |
| 2174 | } |
| 2175 | |
| 2176 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) |
| 2177 | { |
| 2178 | struct sdebug_dev_info * devip; |
| 2179 | |
| 2180 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2181 | printk(KERN_INFO "scsi_debug: device_reset\n"); |
| 2182 | ++num_dev_resets; |
| 2183 | if (SCpnt) { |
| 2184 | devip = devInfoReg(SCpnt->device); |
| 2185 | if (devip) |
| 2186 | devip->reset = 1; |
| 2187 | } |
| 2188 | return SUCCESS; |
| 2189 | } |
| 2190 | |
| 2191 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) |
| 2192 | { |
| 2193 | struct sdebug_host_info *sdbg_host; |
| 2194 | struct sdebug_dev_info * dev_info; |
| 2195 | struct scsi_device * sdp; |
| 2196 | struct Scsi_Host * hp; |
| 2197 | |
| 2198 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2199 | printk(KERN_INFO "scsi_debug: bus_reset\n"); |
| 2200 | ++num_bus_resets; |
| 2201 | if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { |
FUJITA Tomonori | d1e4c9c | 2008-03-02 18:30:18 +0900 | [diff] [blame] | 2202 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2203 | if (sdbg_host) { |
| 2204 | list_for_each_entry(dev_info, |
| 2205 | &sdbg_host->dev_info_list, |
| 2206 | dev_list) |
| 2207 | dev_info->reset = 1; |
| 2208 | } |
| 2209 | } |
| 2210 | return SUCCESS; |
| 2211 | } |
| 2212 | |
| 2213 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) |
| 2214 | { |
| 2215 | struct sdebug_host_info * sdbg_host; |
| 2216 | struct sdebug_dev_info * dev_info; |
| 2217 | |
| 2218 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2219 | printk(KERN_INFO "scsi_debug: host_reset\n"); |
| 2220 | ++num_host_resets; |
| 2221 | spin_lock(&sdebug_host_list_lock); |
| 2222 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
| 2223 | list_for_each_entry(dev_info, &sdbg_host->dev_info_list, |
| 2224 | dev_list) |
| 2225 | dev_info->reset = 1; |
| 2226 | } |
| 2227 | spin_unlock(&sdebug_host_list_lock); |
| 2228 | stop_all_queued(); |
| 2229 | return SUCCESS; |
| 2230 | } |
| 2231 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2232 | /* Initializes timers in queued array */ |
| 2233 | static void __init init_all_queued(void) |
| 2234 | { |
| 2235 | unsigned long iflags; |
| 2236 | int k; |
| 2237 | struct sdebug_queued_cmd * sqcp; |
| 2238 | |
| 2239 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2240 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2241 | sqcp = &queued_arr[k]; |
| 2242 | init_timer(&sqcp->cmnd_timer); |
| 2243 | sqcp->in_use = 0; |
| 2244 | sqcp->a_cmnd = NULL; |
| 2245 | } |
| 2246 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2247 | } |
| 2248 | |
FUJITA Tomonori | f58b0ef | 2008-03-30 00:59:54 +0900 | [diff] [blame] | 2249 | static void __init sdebug_build_parts(unsigned char *ramp, |
FUJITA Tomonori | 5f2578e | 2008-03-30 00:59:57 +0900 | [diff] [blame] | 2250 | unsigned long store_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2251 | { |
| 2252 | struct partition * pp; |
| 2253 | int starts[SDEBUG_MAX_PARTS + 2]; |
| 2254 | int sectors_per_part, num_sectors, k; |
| 2255 | int heads_by_sects, start_sec, end_sec; |
| 2256 | |
| 2257 | /* assume partition table already zeroed */ |
FUJITA Tomonori | f58b0ef | 2008-03-30 00:59:54 +0900 | [diff] [blame] | 2258 | if ((scsi_debug_num_parts < 1) || (store_size < 1048576)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2259 | return; |
| 2260 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { |
| 2261 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; |
| 2262 | printk(KERN_WARNING "scsi_debug:build_parts: reducing " |
| 2263 | "partitions to %d\n", SDEBUG_MAX_PARTS); |
| 2264 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2265 | num_sectors = (int)sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2266 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
| 2267 | / scsi_debug_num_parts; |
| 2268 | heads_by_sects = sdebug_heads * sdebug_sectors_per; |
| 2269 | starts[0] = sdebug_sectors_per; |
| 2270 | for (k = 1; k < scsi_debug_num_parts; ++k) |
| 2271 | starts[k] = ((k * sectors_per_part) / heads_by_sects) |
| 2272 | * heads_by_sects; |
| 2273 | starts[scsi_debug_num_parts] = num_sectors; |
| 2274 | starts[scsi_debug_num_parts + 1] = 0; |
| 2275 | |
| 2276 | ramp[510] = 0x55; /* magic partition markings */ |
| 2277 | ramp[511] = 0xAA; |
| 2278 | pp = (struct partition *)(ramp + 0x1be); |
| 2279 | for (k = 0; starts[k + 1]; ++k, ++pp) { |
| 2280 | start_sec = starts[k]; |
| 2281 | end_sec = starts[k + 1] - 1; |
| 2282 | pp->boot_ind = 0; |
| 2283 | |
| 2284 | pp->cyl = start_sec / heads_by_sects; |
| 2285 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) |
| 2286 | / sdebug_sectors_per; |
| 2287 | pp->sector = (start_sec % sdebug_sectors_per) + 1; |
| 2288 | |
| 2289 | pp->end_cyl = end_sec / heads_by_sects; |
| 2290 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) |
| 2291 | / sdebug_sectors_per; |
| 2292 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; |
| 2293 | |
| 2294 | pp->start_sect = start_sec; |
| 2295 | pp->nr_sects = end_sec - start_sec + 1; |
| 2296 | pp->sys_ind = 0x83; /* plain Linux partition */ |
| 2297 | } |
| 2298 | } |
| 2299 | |
| 2300 | static int schedule_resp(struct scsi_cmnd * cmnd, |
| 2301 | struct sdebug_dev_info * devip, |
| 2302 | done_funct_t done, int scsi_result, int delta_jiff) |
| 2303 | { |
| 2304 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) { |
| 2305 | if (scsi_result) { |
| 2306 | struct scsi_device * sdp = cmnd->device; |
| 2307 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2308 | printk(KERN_INFO "scsi_debug: <%u %u %u %u> " |
| 2309 | "non-zero result=0x%x\n", sdp->host->host_no, |
| 2310 | sdp->channel, sdp->id, sdp->lun, scsi_result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2311 | } |
| 2312 | } |
| 2313 | if (cmnd && devip) { |
| 2314 | /* simulate autosense by this driver */ |
| 2315 | if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff)) |
| 2316 | memcpy(cmnd->sense_buffer, devip->sense_buff, |
| 2317 | (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ? |
| 2318 | SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE); |
| 2319 | } |
| 2320 | if (delta_jiff <= 0) { |
| 2321 | if (cmnd) |
| 2322 | cmnd->result = scsi_result; |
| 2323 | if (done) |
| 2324 | done(cmnd); |
| 2325 | return 0; |
| 2326 | } else { |
| 2327 | unsigned long iflags; |
| 2328 | int k; |
| 2329 | struct sdebug_queued_cmd * sqcp = NULL; |
| 2330 | |
| 2331 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2332 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 2333 | sqcp = &queued_arr[k]; |
| 2334 | if (! sqcp->in_use) |
| 2335 | break; |
| 2336 | } |
| 2337 | if (k >= SCSI_DEBUG_CANQUEUE) { |
| 2338 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2339 | printk(KERN_WARNING "scsi_debug: can_queue exceeded\n"); |
| 2340 | return 1; /* report busy to mid level */ |
| 2341 | } |
| 2342 | sqcp->in_use = 1; |
| 2343 | sqcp->a_cmnd = cmnd; |
| 2344 | sqcp->scsi_result = scsi_result; |
| 2345 | sqcp->done_funct = done; |
| 2346 | sqcp->cmnd_timer.function = timer_intr_handler; |
| 2347 | sqcp->cmnd_timer.data = k; |
| 2348 | sqcp->cmnd_timer.expires = jiffies + delta_jiff; |
| 2349 | add_timer(&sqcp->cmnd_timer); |
| 2350 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2351 | if (cmnd) |
| 2352 | cmnd->result = 0; |
| 2353 | return 0; |
| 2354 | } |
| 2355 | } |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2356 | /* Note: The following macros create attribute files in the |
| 2357 | /sys/module/scsi_debug/parameters directory. Unfortunately this |
| 2358 | driver is unaware of a change and cannot trigger auxiliary actions |
| 2359 | as it can when the corresponding attribute in the |
| 2360 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. |
| 2361 | */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2362 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
| 2363 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); |
| 2364 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); |
| 2365 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); |
| 2366 | module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2367 | module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2368 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
| 2369 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); |
| 2370 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); |
| 2371 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); |
| 2372 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); |
| 2373 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); |
| 2374 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); |
| 2375 | module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2376 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, |
| 2377 | S_IRUGO | S_IWUSR); |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2378 | module_param_named(sector_size, scsi_debug_sector_size, int, S_IRUGO); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 2379 | module_param_named(dix, scsi_debug_dix, int, S_IRUGO); |
| 2380 | module_param_named(dif, scsi_debug_dif, int, S_IRUGO); |
| 2381 | module_param_named(guard, scsi_debug_guard, int, S_IRUGO); |
| 2382 | module_param_named(ato, scsi_debug_ato, int, S_IRUGO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2383 | |
| 2384 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); |
| 2385 | MODULE_DESCRIPTION("SCSI debug adapter driver"); |
| 2386 | MODULE_LICENSE("GPL"); |
| 2387 | MODULE_VERSION(SCSI_DEBUG_VERSION); |
| 2388 | |
| 2389 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); |
| 2390 | MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2391 | MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); |
| 2392 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); |
Randy Dunlap | beb87c3 | 2007-06-11 11:36:40 -0700 | [diff] [blame] | 2393 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2394 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2395 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
| 2396 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2397 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2398 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 2399 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2400 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
| 2401 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2402 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2403 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2404 | MODULE_PARM_DESC(sector_size, "hardware sector size in bytes (def=512)"); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 2405 | MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); |
| 2406 | MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); |
| 2407 | MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)"); |
| 2408 | MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2409 | |
| 2410 | static char sdebug_info[256]; |
| 2411 | |
| 2412 | static const char * scsi_debug_info(struct Scsi_Host * shp) |
| 2413 | { |
| 2414 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " |
| 2415 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, |
| 2416 | scsi_debug_version_date, scsi_debug_dev_size_mb, |
| 2417 | scsi_debug_opts); |
| 2418 | return sdebug_info; |
| 2419 | } |
| 2420 | |
| 2421 | /* scsi_debug_proc_info |
| 2422 | * Used if the driver currently has no own support for /proc/scsi |
| 2423 | */ |
| 2424 | static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset, |
| 2425 | int length, int inout) |
| 2426 | { |
| 2427 | int len, pos, begin; |
| 2428 | int orig_length; |
| 2429 | |
| 2430 | orig_length = length; |
| 2431 | |
| 2432 | if (inout == 1) { |
| 2433 | char arr[16]; |
| 2434 | int minLen = length > 15 ? 15 : length; |
| 2435 | |
| 2436 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 2437 | return -EACCES; |
| 2438 | memcpy(arr, buffer, minLen); |
| 2439 | arr[minLen] = '\0'; |
| 2440 | if (1 != sscanf(arr, "%d", &pos)) |
| 2441 | return -EINVAL; |
| 2442 | scsi_debug_opts = pos; |
| 2443 | if (scsi_debug_every_nth != 0) |
| 2444 | scsi_debug_cmnd_count = 0; |
| 2445 | return length; |
| 2446 | } |
| 2447 | begin = 0; |
| 2448 | pos = len = sprintf(buffer, "scsi_debug adapter driver, version " |
| 2449 | "%s [%s]\n" |
| 2450 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " |
| 2451 | "every_nth=%d(curr:%d)\n" |
| 2452 | "delay=%d, max_luns=%d, scsi_level=%d\n" |
| 2453 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" |
| 2454 | "number of aborts=%d, device_reset=%d, bus_resets=%d, " |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 2455 | "host_resets=%d\ndix_reads=%d dix_writes=%d dif_errors=%d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2456 | SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, |
| 2457 | scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, |
| 2458 | scsi_debug_cmnd_count, scsi_debug_delay, |
| 2459 | scsi_debug_max_luns, scsi_debug_scsi_level, |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2460 | scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads, |
| 2461 | sdebug_sectors_per, num_aborts, num_dev_resets, num_bus_resets, |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 2462 | num_host_resets, dix_reads, dix_writes, dif_errors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2463 | if (pos < offset) { |
| 2464 | len = 0; |
| 2465 | begin = pos; |
| 2466 | } |
| 2467 | *start = buffer + (offset - begin); /* Start of wanted data */ |
| 2468 | len -= (offset - begin); |
| 2469 | if (len > length) |
| 2470 | len = length; |
| 2471 | return len; |
| 2472 | } |
| 2473 | |
| 2474 | static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf) |
| 2475 | { |
| 2476 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); |
| 2477 | } |
| 2478 | |
| 2479 | static ssize_t sdebug_delay_store(struct device_driver * ddp, |
| 2480 | const char * buf, size_t count) |
| 2481 | { |
| 2482 | int delay; |
| 2483 | char work[20]; |
| 2484 | |
| 2485 | if (1 == sscanf(buf, "%10s", work)) { |
| 2486 | if ((1 == sscanf(work, "%d", &delay)) && (delay >= 0)) { |
| 2487 | scsi_debug_delay = delay; |
| 2488 | return count; |
| 2489 | } |
| 2490 | } |
| 2491 | return -EINVAL; |
| 2492 | } |
| 2493 | DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show, |
| 2494 | sdebug_delay_store); |
| 2495 | |
| 2496 | static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf) |
| 2497 | { |
| 2498 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); |
| 2499 | } |
| 2500 | |
| 2501 | static ssize_t sdebug_opts_store(struct device_driver * ddp, |
| 2502 | const char * buf, size_t count) |
| 2503 | { |
| 2504 | int opts; |
| 2505 | char work[20]; |
| 2506 | |
| 2507 | if (1 == sscanf(buf, "%10s", work)) { |
| 2508 | if (0 == strnicmp(work,"0x", 2)) { |
| 2509 | if (1 == sscanf(&work[2], "%x", &opts)) |
| 2510 | goto opts_done; |
| 2511 | } else { |
| 2512 | if (1 == sscanf(work, "%d", &opts)) |
| 2513 | goto opts_done; |
| 2514 | } |
| 2515 | } |
| 2516 | return -EINVAL; |
| 2517 | opts_done: |
| 2518 | scsi_debug_opts = opts; |
| 2519 | scsi_debug_cmnd_count = 0; |
| 2520 | return count; |
| 2521 | } |
| 2522 | DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show, |
| 2523 | sdebug_opts_store); |
| 2524 | |
| 2525 | static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf) |
| 2526 | { |
| 2527 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); |
| 2528 | } |
| 2529 | static ssize_t sdebug_ptype_store(struct device_driver * ddp, |
| 2530 | const char * buf, size_t count) |
| 2531 | { |
| 2532 | int n; |
| 2533 | |
| 2534 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2535 | scsi_debug_ptype = n; |
| 2536 | return count; |
| 2537 | } |
| 2538 | return -EINVAL; |
| 2539 | } |
| 2540 | DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store); |
| 2541 | |
| 2542 | static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf) |
| 2543 | { |
| 2544 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); |
| 2545 | } |
| 2546 | static ssize_t sdebug_dsense_store(struct device_driver * ddp, |
| 2547 | const char * buf, size_t count) |
| 2548 | { |
| 2549 | int n; |
| 2550 | |
| 2551 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2552 | scsi_debug_dsense = n; |
| 2553 | return count; |
| 2554 | } |
| 2555 | return -EINVAL; |
| 2556 | } |
| 2557 | DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show, |
| 2558 | sdebug_dsense_store); |
| 2559 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2560 | static ssize_t sdebug_fake_rw_show(struct device_driver * ddp, char * buf) |
| 2561 | { |
| 2562 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); |
| 2563 | } |
| 2564 | static ssize_t sdebug_fake_rw_store(struct device_driver * ddp, |
| 2565 | const char * buf, size_t count) |
| 2566 | { |
| 2567 | int n; |
| 2568 | |
| 2569 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2570 | scsi_debug_fake_rw = n; |
| 2571 | return count; |
| 2572 | } |
| 2573 | return -EINVAL; |
| 2574 | } |
| 2575 | DRIVER_ATTR(fake_rw, S_IRUGO | S_IWUSR, sdebug_fake_rw_show, |
| 2576 | sdebug_fake_rw_store); |
| 2577 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2578 | static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf) |
| 2579 | { |
| 2580 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); |
| 2581 | } |
| 2582 | static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp, |
| 2583 | const char * buf, size_t count) |
| 2584 | { |
| 2585 | int n; |
| 2586 | |
| 2587 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2588 | scsi_debug_no_lun_0 = n; |
| 2589 | return count; |
| 2590 | } |
| 2591 | return -EINVAL; |
| 2592 | } |
| 2593 | DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show, |
| 2594 | sdebug_no_lun_0_store); |
| 2595 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2596 | static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf) |
| 2597 | { |
| 2598 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); |
| 2599 | } |
| 2600 | static ssize_t sdebug_num_tgts_store(struct device_driver * ddp, |
| 2601 | const char * buf, size_t count) |
| 2602 | { |
| 2603 | int n; |
| 2604 | |
| 2605 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2606 | scsi_debug_num_tgts = n; |
| 2607 | sdebug_max_tgts_luns(); |
| 2608 | return count; |
| 2609 | } |
| 2610 | return -EINVAL; |
| 2611 | } |
| 2612 | DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show, |
| 2613 | sdebug_num_tgts_store); |
| 2614 | |
| 2615 | static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf) |
| 2616 | { |
| 2617 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); |
| 2618 | } |
| 2619 | DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL); |
| 2620 | |
| 2621 | static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf) |
| 2622 | { |
| 2623 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); |
| 2624 | } |
| 2625 | DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL); |
| 2626 | |
| 2627 | static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf) |
| 2628 | { |
| 2629 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); |
| 2630 | } |
| 2631 | static ssize_t sdebug_every_nth_store(struct device_driver * ddp, |
| 2632 | const char * buf, size_t count) |
| 2633 | { |
| 2634 | int nth; |
| 2635 | |
| 2636 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { |
| 2637 | scsi_debug_every_nth = nth; |
| 2638 | scsi_debug_cmnd_count = 0; |
| 2639 | return count; |
| 2640 | } |
| 2641 | return -EINVAL; |
| 2642 | } |
| 2643 | DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show, |
| 2644 | sdebug_every_nth_store); |
| 2645 | |
| 2646 | static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf) |
| 2647 | { |
| 2648 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); |
| 2649 | } |
| 2650 | static ssize_t sdebug_max_luns_store(struct device_driver * ddp, |
| 2651 | const char * buf, size_t count) |
| 2652 | { |
| 2653 | int n; |
| 2654 | |
| 2655 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2656 | scsi_debug_max_luns = n; |
| 2657 | sdebug_max_tgts_luns(); |
| 2658 | return count; |
| 2659 | } |
| 2660 | return -EINVAL; |
| 2661 | } |
| 2662 | DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, |
| 2663 | sdebug_max_luns_store); |
| 2664 | |
| 2665 | static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf) |
| 2666 | { |
| 2667 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); |
| 2668 | } |
| 2669 | DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL); |
| 2670 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2671 | static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf) |
| 2672 | { |
| 2673 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); |
| 2674 | } |
| 2675 | static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp, |
| 2676 | const char * buf, size_t count) |
| 2677 | { |
| 2678 | int n; |
| 2679 | |
| 2680 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2681 | scsi_debug_virtual_gb = n; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 2682 | |
| 2683 | sdebug_capacity = get_sdebug_capacity(); |
| 2684 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2685 | return count; |
| 2686 | } |
| 2687 | return -EINVAL; |
| 2688 | } |
| 2689 | DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show, |
| 2690 | sdebug_virtual_gb_store); |
| 2691 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2692 | static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf) |
| 2693 | { |
| 2694 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); |
| 2695 | } |
| 2696 | |
| 2697 | static ssize_t sdebug_add_host_store(struct device_driver * ddp, |
| 2698 | const char * buf, size_t count) |
| 2699 | { |
FUJITA Tomonori | f3df41c | 2008-03-20 11:09:15 +0900 | [diff] [blame] | 2700 | int delta_hosts; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2701 | |
FUJITA Tomonori | f3df41c | 2008-03-20 11:09:15 +0900 | [diff] [blame] | 2702 | if (sscanf(buf, "%d", &delta_hosts) != 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2703 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2704 | if (delta_hosts > 0) { |
| 2705 | do { |
| 2706 | sdebug_add_adapter(); |
| 2707 | } while (--delta_hosts); |
| 2708 | } else if (delta_hosts < 0) { |
| 2709 | do { |
| 2710 | sdebug_remove_adapter(); |
| 2711 | } while (++delta_hosts); |
| 2712 | } |
| 2713 | return count; |
| 2714 | } |
FUJITA Tomonori | f3df41c | 2008-03-20 11:09:15 +0900 | [diff] [blame] | 2715 | DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2716 | sdebug_add_host_store); |
| 2717 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2718 | static ssize_t sdebug_vpd_use_hostno_show(struct device_driver * ddp, |
| 2719 | char * buf) |
| 2720 | { |
| 2721 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); |
| 2722 | } |
| 2723 | static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp, |
| 2724 | const char * buf, size_t count) |
| 2725 | { |
| 2726 | int n; |
| 2727 | |
| 2728 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2729 | scsi_debug_vpd_use_hostno = n; |
| 2730 | return count; |
| 2731 | } |
| 2732 | return -EINVAL; |
| 2733 | } |
| 2734 | DRIVER_ATTR(vpd_use_hostno, S_IRUGO | S_IWUSR, sdebug_vpd_use_hostno_show, |
| 2735 | sdebug_vpd_use_hostno_store); |
| 2736 | |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2737 | static ssize_t sdebug_sector_size_show(struct device_driver * ddp, char * buf) |
| 2738 | { |
| 2739 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_sector_size); |
| 2740 | } |
| 2741 | DRIVER_ATTR(sector_size, S_IRUGO, sdebug_sector_size_show, NULL); |
| 2742 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 2743 | static ssize_t sdebug_dix_show(struct device_driver *ddp, char *buf) |
| 2744 | { |
| 2745 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dix); |
| 2746 | } |
| 2747 | DRIVER_ATTR(dix, S_IRUGO, sdebug_dix_show, NULL); |
| 2748 | |
| 2749 | static ssize_t sdebug_dif_show(struct device_driver *ddp, char *buf) |
| 2750 | { |
| 2751 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dif); |
| 2752 | } |
| 2753 | DRIVER_ATTR(dif, S_IRUGO, sdebug_dif_show, NULL); |
| 2754 | |
| 2755 | static ssize_t sdebug_guard_show(struct device_driver *ddp, char *buf) |
| 2756 | { |
| 2757 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_guard); |
| 2758 | } |
| 2759 | DRIVER_ATTR(guard, S_IRUGO, sdebug_guard_show, NULL); |
| 2760 | |
| 2761 | static ssize_t sdebug_ato_show(struct device_driver *ddp, char *buf) |
| 2762 | { |
| 2763 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ato); |
| 2764 | } |
| 2765 | DRIVER_ATTR(ato, S_IRUGO, sdebug_ato_show, NULL); |
| 2766 | |
| 2767 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2768 | /* Note: The following function creates attribute files in the |
| 2769 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these |
| 2770 | files (over those found in the /sys/module/scsi_debug/parameters |
| 2771 | directory) is that auxiliary actions can be triggered when an attribute |
| 2772 | is changed. For example see: sdebug_add_host_store() above. |
| 2773 | */ |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2774 | static int do_create_driverfs_files(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2775 | { |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2776 | int ret; |
| 2777 | |
| 2778 | ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host); |
| 2779 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay); |
| 2780 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); |
| 2781 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense); |
| 2782 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2783 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2784 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2785 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2786 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2787 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2788 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
| 2789 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts); |
| 2790 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2791 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); |
| 2792 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2793 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_sector_size); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 2794 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dix); |
| 2795 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dif); |
| 2796 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_guard); |
| 2797 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ato); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2798 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2799 | } |
| 2800 | |
| 2801 | static void do_remove_driverfs_files(void) |
| 2802 | { |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 2803 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ato); |
| 2804 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_guard); |
| 2805 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dif); |
| 2806 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dix); |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2807 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_sector_size); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2808 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); |
| 2809 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2810 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
| 2811 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts); |
| 2812 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2813 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2814 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
| 2815 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2816 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2817 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2818 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
| 2819 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense); |
| 2820 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); |
| 2821 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay); |
| 2822 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); |
| 2823 | } |
| 2824 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2825 | static void pseudo_0_release(struct device *dev) |
| 2826 | { |
| 2827 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2828 | printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n"); |
| 2829 | } |
| 2830 | |
| 2831 | static struct device pseudo_primary = { |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 2832 | .init_name = "pseudo_0", |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2833 | .release = pseudo_0_release, |
| 2834 | }; |
| 2835 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2836 | static int __init scsi_debug_init(void) |
| 2837 | { |
FUJITA Tomonori | 5f2578e | 2008-03-30 00:59:57 +0900 | [diff] [blame] | 2838 | unsigned long sz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2839 | int host_to_add; |
| 2840 | int k; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2841 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2842 | |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2843 | switch (scsi_debug_sector_size) { |
| 2844 | case 512: |
| 2845 | case 1024: |
| 2846 | case 2048: |
| 2847 | case 4096: |
| 2848 | break; |
| 2849 | default: |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 2850 | printk(KERN_ERR "scsi_debug_init: invalid sector_size %d\n", |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2851 | scsi_debug_sector_size); |
| 2852 | return -EINVAL; |
| 2853 | } |
| 2854 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 2855 | switch (scsi_debug_dif) { |
| 2856 | |
| 2857 | case SD_DIF_TYPE0_PROTECTION: |
| 2858 | case SD_DIF_TYPE1_PROTECTION: |
| 2859 | case SD_DIF_TYPE3_PROTECTION: |
| 2860 | break; |
| 2861 | |
| 2862 | default: |
| 2863 | printk(KERN_ERR "scsi_debug_init: dif must be 0, 1 or 3\n"); |
| 2864 | return -EINVAL; |
| 2865 | } |
| 2866 | |
| 2867 | if (scsi_debug_guard > 1) { |
| 2868 | printk(KERN_ERR "scsi_debug_init: guard must be 0 or 1\n"); |
| 2869 | return -EINVAL; |
| 2870 | } |
| 2871 | |
| 2872 | if (scsi_debug_ato > 1) { |
| 2873 | printk(KERN_ERR "scsi_debug_init: ato must be 0 or 1\n"); |
| 2874 | return -EINVAL; |
| 2875 | } |
| 2876 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2877 | if (scsi_debug_dev_size_mb < 1) |
| 2878 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ |
FUJITA Tomonori | 5f2578e | 2008-03-30 00:59:57 +0900 | [diff] [blame] | 2879 | sz = (unsigned long)scsi_debug_dev_size_mb * 1048576; |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2880 | sdebug_store_sectors = sz / scsi_debug_sector_size; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 2881 | sdebug_capacity = get_sdebug_capacity(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2882 | |
| 2883 | /* play around with geometry, don't waste too much on track 0 */ |
| 2884 | sdebug_heads = 8; |
| 2885 | sdebug_sectors_per = 32; |
| 2886 | if (scsi_debug_dev_size_mb >= 16) |
| 2887 | sdebug_heads = 32; |
| 2888 | else if (scsi_debug_dev_size_mb >= 256) |
| 2889 | sdebug_heads = 64; |
| 2890 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 2891 | (sdebug_sectors_per * sdebug_heads); |
| 2892 | if (sdebug_cylinders_per >= 1024) { |
| 2893 | /* other LLDs do this; implies >= 1GB ram disk ... */ |
| 2894 | sdebug_heads = 255; |
| 2895 | sdebug_sectors_per = 63; |
| 2896 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 2897 | (sdebug_sectors_per * sdebug_heads); |
| 2898 | } |
| 2899 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2900 | fake_storep = vmalloc(sz); |
| 2901 | if (NULL == fake_storep) { |
| 2902 | printk(KERN_ERR "scsi_debug_init: out of memory, 1\n"); |
| 2903 | return -ENOMEM; |
| 2904 | } |
| 2905 | memset(fake_storep, 0, sz); |
| 2906 | if (scsi_debug_num_parts > 0) |
FUJITA Tomonori | f58b0ef | 2008-03-30 00:59:54 +0900 | [diff] [blame] | 2907 | sdebug_build_parts(fake_storep, sz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2908 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 2909 | if (scsi_debug_dif) { |
| 2910 | int dif_size; |
| 2911 | |
| 2912 | dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple); |
| 2913 | dif_storep = vmalloc(dif_size); |
| 2914 | |
| 2915 | printk(KERN_ERR "scsi_debug_init: dif_storep %u bytes @ %p\n", |
| 2916 | dif_size, dif_storep); |
| 2917 | |
| 2918 | if (dif_storep == NULL) { |
| 2919 | printk(KERN_ERR "scsi_debug_init: out of mem. (DIX)\n"); |
| 2920 | ret = -ENOMEM; |
| 2921 | goto free_vm; |
| 2922 | } |
| 2923 | |
| 2924 | memset(dif_storep, 0xff, dif_size); |
| 2925 | } |
| 2926 | |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2927 | ret = device_register(&pseudo_primary); |
| 2928 | if (ret < 0) { |
| 2929 | printk(KERN_WARNING "scsi_debug: device_register error: %d\n", |
| 2930 | ret); |
| 2931 | goto free_vm; |
| 2932 | } |
| 2933 | ret = bus_register(&pseudo_lld_bus); |
| 2934 | if (ret < 0) { |
| 2935 | printk(KERN_WARNING "scsi_debug: bus_register error: %d\n", |
| 2936 | ret); |
| 2937 | goto dev_unreg; |
| 2938 | } |
| 2939 | ret = driver_register(&sdebug_driverfs_driver); |
| 2940 | if (ret < 0) { |
| 2941 | printk(KERN_WARNING "scsi_debug: driver_register error: %d\n", |
| 2942 | ret); |
| 2943 | goto bus_unreg; |
| 2944 | } |
| 2945 | ret = do_create_driverfs_files(); |
| 2946 | if (ret < 0) { |
| 2947 | printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n", |
| 2948 | ret); |
| 2949 | goto del_files; |
| 2950 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2951 | |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2952 | init_all_queued(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2953 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2954 | host_to_add = scsi_debug_add_host; |
| 2955 | scsi_debug_add_host = 0; |
| 2956 | |
| 2957 | for (k = 0; k < host_to_add; k++) { |
| 2958 | if (sdebug_add_adapter()) { |
| 2959 | printk(KERN_ERR "scsi_debug_init: " |
| 2960 | "sdebug_add_adapter failed k=%d\n", k); |
| 2961 | break; |
| 2962 | } |
| 2963 | } |
| 2964 | |
| 2965 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { |
| 2966 | printk(KERN_INFO "scsi_debug_init: built %d host(s)\n", |
| 2967 | scsi_debug_add_host); |
| 2968 | } |
| 2969 | return 0; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2970 | |
| 2971 | del_files: |
| 2972 | do_remove_driverfs_files(); |
| 2973 | driver_unregister(&sdebug_driverfs_driver); |
| 2974 | bus_unreg: |
| 2975 | bus_unregister(&pseudo_lld_bus); |
| 2976 | dev_unreg: |
| 2977 | device_unregister(&pseudo_primary); |
| 2978 | free_vm: |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 2979 | if (dif_storep) |
| 2980 | vfree(dif_storep); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 2981 | vfree(fake_storep); |
| 2982 | |
| 2983 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2984 | } |
| 2985 | |
| 2986 | static void __exit scsi_debug_exit(void) |
| 2987 | { |
| 2988 | int k = scsi_debug_add_host; |
| 2989 | |
| 2990 | stop_all_queued(); |
| 2991 | for (; k; k--) |
| 2992 | sdebug_remove_adapter(); |
| 2993 | do_remove_driverfs_files(); |
| 2994 | driver_unregister(&sdebug_driverfs_driver); |
| 2995 | bus_unregister(&pseudo_lld_bus); |
| 2996 | device_unregister(&pseudo_primary); |
| 2997 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 2998 | if (dif_storep) |
| 2999 | vfree(dif_storep); |
| 3000 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3001 | vfree(fake_storep); |
| 3002 | } |
| 3003 | |
| 3004 | device_initcall(scsi_debug_init); |
| 3005 | module_exit(scsi_debug_exit); |
| 3006 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3007 | static void sdebug_release_adapter(struct device * dev) |
| 3008 | { |
| 3009 | struct sdebug_host_info *sdbg_host; |
| 3010 | |
| 3011 | sdbg_host = to_sdebug_host(dev); |
| 3012 | kfree(sdbg_host); |
| 3013 | } |
| 3014 | |
| 3015 | static int sdebug_add_adapter(void) |
| 3016 | { |
| 3017 | int k, devs_per_host; |
| 3018 | int error = 0; |
| 3019 | struct sdebug_host_info *sdbg_host; |
FUJITA Tomonori | 8b40228 | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 3020 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3021 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3022 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3023 | if (NULL == sdbg_host) { |
| 3024 | printk(KERN_ERR "%s: out of memory at line %d\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 3025 | __func__, __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3026 | return -ENOMEM; |
| 3027 | } |
| 3028 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3029 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
| 3030 | |
| 3031 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; |
| 3032 | for (k = 0; k < devs_per_host; k++) { |
FUJITA Tomonori | 5cb2fc0 | 2008-03-20 11:09:16 +0900 | [diff] [blame] | 3033 | sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); |
| 3034 | if (!sdbg_devinfo) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3035 | printk(KERN_ERR "%s: out of memory at line %d\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 3036 | __func__, __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3037 | error = -ENOMEM; |
| 3038 | goto clean; |
| 3039 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3040 | } |
| 3041 | |
| 3042 | spin_lock(&sdebug_host_list_lock); |
| 3043 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); |
| 3044 | spin_unlock(&sdebug_host_list_lock); |
| 3045 | |
| 3046 | sdbg_host->dev.bus = &pseudo_lld_bus; |
| 3047 | sdbg_host->dev.parent = &pseudo_primary; |
| 3048 | sdbg_host->dev.release = &sdebug_release_adapter; |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 3049 | dev_set_name(&sdbg_host->dev, "adapter%d", scsi_debug_add_host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3050 | |
| 3051 | error = device_register(&sdbg_host->dev); |
| 3052 | |
| 3053 | if (error) |
| 3054 | goto clean; |
| 3055 | |
| 3056 | ++scsi_debug_add_host; |
| 3057 | return error; |
| 3058 | |
| 3059 | clean: |
FUJITA Tomonori | 8b40228 | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 3060 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
| 3061 | dev_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3062 | list_del(&sdbg_devinfo->dev_list); |
| 3063 | kfree(sdbg_devinfo); |
| 3064 | } |
| 3065 | |
| 3066 | kfree(sdbg_host); |
| 3067 | return error; |
| 3068 | } |
| 3069 | |
| 3070 | static void sdebug_remove_adapter(void) |
| 3071 | { |
| 3072 | struct sdebug_host_info * sdbg_host = NULL; |
| 3073 | |
| 3074 | spin_lock(&sdebug_host_list_lock); |
| 3075 | if (!list_empty(&sdebug_host_list)) { |
| 3076 | sdbg_host = list_entry(sdebug_host_list.prev, |
| 3077 | struct sdebug_host_info, host_list); |
| 3078 | list_del(&sdbg_host->host_list); |
| 3079 | } |
| 3080 | spin_unlock(&sdebug_host_list_lock); |
| 3081 | |
| 3082 | if (!sdbg_host) |
| 3083 | return; |
| 3084 | |
| 3085 | device_unregister(&sdbg_host->dev); |
| 3086 | --scsi_debug_add_host; |
| 3087 | } |
| 3088 | |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3089 | static |
| 3090 | int scsi_debug_queuecommand(struct scsi_cmnd *SCpnt, done_funct_t done) |
| 3091 | { |
| 3092 | unsigned char *cmd = (unsigned char *) SCpnt->cmnd; |
| 3093 | int len, k; |
| 3094 | unsigned int num; |
| 3095 | unsigned long long lba; |
| 3096 | int errsts = 0; |
| 3097 | int target = SCpnt->device->id; |
| 3098 | struct sdebug_dev_info *devip = NULL; |
| 3099 | int inj_recovered = 0; |
| 3100 | int inj_transport = 0; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 3101 | int inj_dif = 0; |
| 3102 | int inj_dix = 0; |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3103 | int delay_override = 0; |
| 3104 | |
| 3105 | scsi_set_resid(SCpnt, 0); |
| 3106 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { |
| 3107 | printk(KERN_INFO "scsi_debug: cmd "); |
| 3108 | for (k = 0, len = SCpnt->cmd_len; k < len; ++k) |
| 3109 | printk("%02x ", (int)cmd[k]); |
| 3110 | printk("\n"); |
| 3111 | } |
| 3112 | |
| 3113 | if (target == SCpnt->device->host->hostt->this_id) { |
| 3114 | printk(KERN_INFO "scsi_debug: initiator's id used as " |
| 3115 | "target!\n"); |
| 3116 | return schedule_resp(SCpnt, NULL, done, |
| 3117 | DID_NO_CONNECT << 16, 0); |
| 3118 | } |
| 3119 | |
| 3120 | if ((SCpnt->device->lun >= scsi_debug_max_luns) && |
| 3121 | (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) |
| 3122 | return schedule_resp(SCpnt, NULL, done, |
| 3123 | DID_NO_CONNECT << 16, 0); |
| 3124 | devip = devInfoReg(SCpnt->device); |
| 3125 | if (NULL == devip) |
| 3126 | return schedule_resp(SCpnt, NULL, done, |
| 3127 | DID_NO_CONNECT << 16, 0); |
| 3128 | |
| 3129 | if ((scsi_debug_every_nth != 0) && |
| 3130 | (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { |
| 3131 | scsi_debug_cmnd_count = 0; |
| 3132 | if (scsi_debug_every_nth < -1) |
| 3133 | scsi_debug_every_nth = -1; |
| 3134 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) |
| 3135 | return 0; /* ignore command causing timeout */ |
| 3136 | else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) |
| 3137 | inj_recovered = 1; /* to reads and writes below */ |
| 3138 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts) |
| 3139 | inj_transport = 1; /* to reads and writes below */ |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 3140 | else if (SCSI_DEBUG_OPT_DIF_ERR & scsi_debug_opts) |
| 3141 | inj_dif = 1; /* to reads and writes below */ |
| 3142 | else if (SCSI_DEBUG_OPT_DIX_ERR & scsi_debug_opts) |
| 3143 | inj_dix = 1; /* to reads and writes below */ |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3144 | } |
| 3145 | |
| 3146 | if (devip->wlun) { |
| 3147 | switch (*cmd) { |
| 3148 | case INQUIRY: |
| 3149 | case REQUEST_SENSE: |
| 3150 | case TEST_UNIT_READY: |
| 3151 | case REPORT_LUNS: |
| 3152 | break; /* only allowable wlun commands */ |
| 3153 | default: |
| 3154 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 3155 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x " |
| 3156 | "not supported for wlun\n", *cmd); |
| 3157 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 3158 | INVALID_OPCODE, 0); |
| 3159 | errsts = check_condition_result; |
| 3160 | return schedule_resp(SCpnt, devip, done, errsts, |
| 3161 | 0); |
| 3162 | } |
| 3163 | } |
| 3164 | |
| 3165 | switch (*cmd) { |
| 3166 | case INQUIRY: /* mandatory, ignore unit attention */ |
| 3167 | delay_override = 1; |
| 3168 | errsts = resp_inquiry(SCpnt, target, devip); |
| 3169 | break; |
| 3170 | case REQUEST_SENSE: /* mandatory, ignore unit attention */ |
| 3171 | delay_override = 1; |
| 3172 | errsts = resp_requests(SCpnt, devip); |
| 3173 | break; |
| 3174 | case REZERO_UNIT: /* actually this is REWIND for SSC */ |
| 3175 | case START_STOP: |
| 3176 | errsts = resp_start_stop(SCpnt, devip); |
| 3177 | break; |
| 3178 | case ALLOW_MEDIUM_REMOVAL: |
| 3179 | errsts = check_readiness(SCpnt, 1, devip); |
| 3180 | if (errsts) |
| 3181 | break; |
| 3182 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 3183 | printk(KERN_INFO "scsi_debug: Medium removal %s\n", |
| 3184 | cmd[4] ? "inhibited" : "enabled"); |
| 3185 | break; |
| 3186 | case SEND_DIAGNOSTIC: /* mandatory */ |
| 3187 | errsts = check_readiness(SCpnt, 1, devip); |
| 3188 | break; |
| 3189 | case TEST_UNIT_READY: /* mandatory */ |
| 3190 | delay_override = 1; |
| 3191 | errsts = check_readiness(SCpnt, 0, devip); |
| 3192 | break; |
| 3193 | case RESERVE: |
| 3194 | errsts = check_readiness(SCpnt, 1, devip); |
| 3195 | break; |
| 3196 | case RESERVE_10: |
| 3197 | errsts = check_readiness(SCpnt, 1, devip); |
| 3198 | break; |
| 3199 | case RELEASE: |
| 3200 | errsts = check_readiness(SCpnt, 1, devip); |
| 3201 | break; |
| 3202 | case RELEASE_10: |
| 3203 | errsts = check_readiness(SCpnt, 1, devip); |
| 3204 | break; |
| 3205 | case READ_CAPACITY: |
| 3206 | errsts = resp_readcap(SCpnt, devip); |
| 3207 | break; |
| 3208 | case SERVICE_ACTION_IN: |
| 3209 | if (SAI_READ_CAPACITY_16 != cmd[1]) { |
| 3210 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 3211 | INVALID_OPCODE, 0); |
| 3212 | errsts = check_condition_result; |
| 3213 | break; |
| 3214 | } |
| 3215 | errsts = resp_readcap16(SCpnt, devip); |
| 3216 | break; |
| 3217 | case MAINTENANCE_IN: |
| 3218 | if (MI_REPORT_TARGET_PGS != cmd[1]) { |
| 3219 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 3220 | INVALID_OPCODE, 0); |
| 3221 | errsts = check_condition_result; |
| 3222 | break; |
| 3223 | } |
| 3224 | errsts = resp_report_tgtpgs(SCpnt, devip); |
| 3225 | break; |
| 3226 | case READ_16: |
| 3227 | case READ_12: |
| 3228 | case READ_10: |
| 3229 | case READ_6: |
| 3230 | errsts = check_readiness(SCpnt, 0, devip); |
| 3231 | if (errsts) |
| 3232 | break; |
| 3233 | if (scsi_debug_fake_rw) |
| 3234 | break; |
| 3235 | get_data_transfer_info(cmd, &lba, &num); |
| 3236 | errsts = resp_read(SCpnt, lba, num, devip); |
| 3237 | if (inj_recovered && (0 == errsts)) { |
| 3238 | mk_sense_buffer(devip, RECOVERED_ERROR, |
| 3239 | THRESHOLD_EXCEEDED, 0); |
| 3240 | errsts = check_condition_result; |
| 3241 | } else if (inj_transport && (0 == errsts)) { |
| 3242 | mk_sense_buffer(devip, ABORTED_COMMAND, |
| 3243 | TRANSPORT_PROBLEM, ACK_NAK_TO); |
| 3244 | errsts = check_condition_result; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 3245 | } else if (inj_dif && (0 == errsts)) { |
| 3246 | mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1); |
| 3247 | errsts = illegal_condition_result; |
| 3248 | } else if (inj_dix && (0 == errsts)) { |
| 3249 | mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1); |
| 3250 | errsts = illegal_condition_result; |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3251 | } |
| 3252 | break; |
| 3253 | case REPORT_LUNS: /* mandatory, ignore unit attention */ |
| 3254 | delay_override = 1; |
| 3255 | errsts = resp_report_luns(SCpnt, devip); |
| 3256 | break; |
| 3257 | case VERIFY: /* 10 byte SBC-2 command */ |
| 3258 | errsts = check_readiness(SCpnt, 0, devip); |
| 3259 | break; |
| 3260 | case WRITE_16: |
| 3261 | case WRITE_12: |
| 3262 | case WRITE_10: |
| 3263 | case WRITE_6: |
| 3264 | errsts = check_readiness(SCpnt, 0, devip); |
| 3265 | if (errsts) |
| 3266 | break; |
| 3267 | if (scsi_debug_fake_rw) |
| 3268 | break; |
| 3269 | get_data_transfer_info(cmd, &lba, &num); |
| 3270 | errsts = resp_write(SCpnt, lba, num, devip); |
| 3271 | if (inj_recovered && (0 == errsts)) { |
| 3272 | mk_sense_buffer(devip, RECOVERED_ERROR, |
| 3273 | THRESHOLD_EXCEEDED, 0); |
| 3274 | errsts = check_condition_result; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 3275 | } else if (inj_dif && (0 == errsts)) { |
| 3276 | mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1); |
| 3277 | errsts = illegal_condition_result; |
| 3278 | } else if (inj_dix && (0 == errsts)) { |
| 3279 | mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1); |
| 3280 | errsts = illegal_condition_result; |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3281 | } |
| 3282 | break; |
| 3283 | case MODE_SENSE: |
| 3284 | case MODE_SENSE_10: |
| 3285 | errsts = resp_mode_sense(SCpnt, target, devip); |
| 3286 | break; |
| 3287 | case MODE_SELECT: |
| 3288 | errsts = resp_mode_select(SCpnt, 1, devip); |
| 3289 | break; |
| 3290 | case MODE_SELECT_10: |
| 3291 | errsts = resp_mode_select(SCpnt, 0, devip); |
| 3292 | break; |
| 3293 | case LOG_SENSE: |
| 3294 | errsts = resp_log_sense(SCpnt, devip); |
| 3295 | break; |
| 3296 | case SYNCHRONIZE_CACHE: |
| 3297 | delay_override = 1; |
| 3298 | errsts = check_readiness(SCpnt, 0, devip); |
| 3299 | break; |
| 3300 | case WRITE_BUFFER: |
| 3301 | errsts = check_readiness(SCpnt, 1, devip); |
| 3302 | break; |
| 3303 | case XDWRITEREAD_10: |
| 3304 | if (!scsi_bidi_cmnd(SCpnt)) { |
| 3305 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 3306 | INVALID_FIELD_IN_CDB, 0); |
| 3307 | errsts = check_condition_result; |
| 3308 | break; |
| 3309 | } |
| 3310 | |
| 3311 | errsts = check_readiness(SCpnt, 0, devip); |
| 3312 | if (errsts) |
| 3313 | break; |
| 3314 | if (scsi_debug_fake_rw) |
| 3315 | break; |
| 3316 | get_data_transfer_info(cmd, &lba, &num); |
| 3317 | errsts = resp_read(SCpnt, lba, num, devip); |
| 3318 | if (errsts) |
| 3319 | break; |
| 3320 | errsts = resp_write(SCpnt, lba, num, devip); |
| 3321 | if (errsts) |
| 3322 | break; |
| 3323 | errsts = resp_xdwriteread(SCpnt, lba, num, devip); |
| 3324 | break; |
| 3325 | default: |
| 3326 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 3327 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " |
| 3328 | "supported\n", *cmd); |
| 3329 | errsts = check_readiness(SCpnt, 1, devip); |
| 3330 | if (errsts) |
| 3331 | break; /* Unit attention takes precedence */ |
| 3332 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); |
| 3333 | errsts = check_condition_result; |
| 3334 | break; |
| 3335 | } |
| 3336 | return schedule_resp(SCpnt, devip, done, errsts, |
| 3337 | (delay_override ? 0 : scsi_debug_delay)); |
| 3338 | } |
| 3339 | |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 3340 | static struct scsi_host_template sdebug_driver_template = { |
| 3341 | .proc_info = scsi_debug_proc_info, |
| 3342 | .proc_name = sdebug_proc_name, |
| 3343 | .name = "SCSI DEBUG", |
| 3344 | .info = scsi_debug_info, |
| 3345 | .slave_alloc = scsi_debug_slave_alloc, |
| 3346 | .slave_configure = scsi_debug_slave_configure, |
| 3347 | .slave_destroy = scsi_debug_slave_destroy, |
| 3348 | .ioctl = scsi_debug_ioctl, |
| 3349 | .queuecommand = scsi_debug_queuecommand, |
| 3350 | .eh_abort_handler = scsi_debug_abort, |
| 3351 | .eh_bus_reset_handler = scsi_debug_bus_reset, |
| 3352 | .eh_device_reset_handler = scsi_debug_device_reset, |
| 3353 | .eh_host_reset_handler = scsi_debug_host_reset, |
| 3354 | .bios_param = scsi_debug_biosparam, |
| 3355 | .can_queue = SCSI_DEBUG_CANQUEUE, |
| 3356 | .this_id = 7, |
| 3357 | .sg_tablesize = 256, |
| 3358 | .cmd_per_lun = 16, |
| 3359 | .max_sectors = 0xffff, |
| 3360 | .use_clustering = DISABLE_CLUSTERING, |
| 3361 | .module = THIS_MODULE, |
| 3362 | }; |
| 3363 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3364 | static int sdebug_driver_probe(struct device * dev) |
| 3365 | { |
| 3366 | int error = 0; |
| 3367 | struct sdebug_host_info *sdbg_host; |
| 3368 | struct Scsi_Host *hpnt; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 3369 | int host_prot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3370 | |
| 3371 | sdbg_host = to_sdebug_host(dev); |
| 3372 | |
| 3373 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); |
| 3374 | if (NULL == hpnt) { |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 3375 | printk(KERN_ERR "%s: scsi_register failed\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3376 | error = -ENODEV; |
| 3377 | return error; |
| 3378 | } |
| 3379 | |
| 3380 | sdbg_host->shost = hpnt; |
| 3381 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; |
| 3382 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) |
| 3383 | hpnt->max_id = scsi_debug_num_tgts + 1; |
| 3384 | else |
| 3385 | hpnt->max_id = scsi_debug_num_tgts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3386 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3387 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame^] | 3388 | host_prot = 0; |
| 3389 | |
| 3390 | switch (scsi_debug_dif) { |
| 3391 | |
| 3392 | case SD_DIF_TYPE1_PROTECTION: |
| 3393 | host_prot = SHOST_DIF_TYPE1_PROTECTION; |
| 3394 | if (scsi_debug_dix) |
| 3395 | host_prot |= SHOST_DIX_TYPE1_PROTECTION; |
| 3396 | break; |
| 3397 | |
| 3398 | case SD_DIF_TYPE2_PROTECTION: |
| 3399 | host_prot = SHOST_DIF_TYPE2_PROTECTION; |
| 3400 | if (scsi_debug_dix) |
| 3401 | host_prot |= SHOST_DIX_TYPE2_PROTECTION; |
| 3402 | break; |
| 3403 | |
| 3404 | case SD_DIF_TYPE3_PROTECTION: |
| 3405 | host_prot = SHOST_DIF_TYPE3_PROTECTION; |
| 3406 | if (scsi_debug_dix) |
| 3407 | host_prot |= SHOST_DIX_TYPE3_PROTECTION; |
| 3408 | break; |
| 3409 | |
| 3410 | default: |
| 3411 | if (scsi_debug_dix) |
| 3412 | host_prot |= SHOST_DIX_TYPE0_PROTECTION; |
| 3413 | break; |
| 3414 | } |
| 3415 | |
| 3416 | scsi_host_set_prot(hpnt, host_prot); |
| 3417 | |
| 3418 | printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n", |
| 3419 | (host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", |
| 3420 | (host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", |
| 3421 | (host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", |
| 3422 | (host_prot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", |
| 3423 | (host_prot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", |
| 3424 | (host_prot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", |
| 3425 | (host_prot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); |
| 3426 | |
| 3427 | if (scsi_debug_guard == 1) |
| 3428 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP); |
| 3429 | else |
| 3430 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC); |
| 3431 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3432 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
| 3433 | if (error) { |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 3434 | printk(KERN_ERR "%s: scsi_add_host failed\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3435 | error = -ENODEV; |
| 3436 | scsi_host_put(hpnt); |
| 3437 | } else |
| 3438 | scsi_scan_host(hpnt); |
| 3439 | |
| 3440 | |
| 3441 | return error; |
| 3442 | } |
| 3443 | |
| 3444 | static int sdebug_driver_remove(struct device * dev) |
| 3445 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3446 | struct sdebug_host_info *sdbg_host; |
FUJITA Tomonori | 8b40228 | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 3447 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3448 | |
| 3449 | sdbg_host = to_sdebug_host(dev); |
| 3450 | |
| 3451 | if (!sdbg_host) { |
| 3452 | printk(KERN_ERR "%s: Unable to locate host info\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 3453 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3454 | return -ENODEV; |
| 3455 | } |
| 3456 | |
| 3457 | scsi_remove_host(sdbg_host->shost); |
| 3458 | |
FUJITA Tomonori | 8b40228 | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 3459 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
| 3460 | dev_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3461 | list_del(&sdbg_devinfo->dev_list); |
| 3462 | kfree(sdbg_devinfo); |
| 3463 | } |
| 3464 | |
| 3465 | scsi_host_put(sdbg_host->shost); |
| 3466 | return 0; |
| 3467 | } |
| 3468 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3469 | static int pseudo_lld_bus_match(struct device *dev, |
| 3470 | struct device_driver *dev_driver) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3471 | { |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3472 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3473 | } |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3474 | |
| 3475 | static struct bus_type pseudo_lld_bus = { |
| 3476 | .name = "pseudo", |
| 3477 | .match = pseudo_lld_bus_match, |
| 3478 | .probe = sdebug_driver_probe, |
| 3479 | .remove = sdebug_driver_remove, |
| 3480 | }; |