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 | * |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 15 | * For documentation see http://sg.danny.cz/sg/sdebug26.html |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 33 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <linux/types.h> |
| 35 | #include <linux/string.h> |
| 36 | #include <linux/genhd.h> |
| 37 | #include <linux/fs.h> |
| 38 | #include <linux/init.h> |
| 39 | #include <linux/proc_fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <linux/vmalloc.h> |
| 41 | #include <linux/moduleparam.h> |
Jens Axboe | 852e034 | 2007-07-16 10:19:24 +0200 | [diff] [blame] | 42 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <linux/blkdev.h> |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 44 | #include <linux/crc-t10dif.h> |
| 45 | |
| 46 | #include <net/checksum.h> |
FUJITA Tomonori | 9ff26ee | 2008-03-02 18:30:15 +0900 | [diff] [blame] | 47 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 48 | #include <asm/unaligned.h> |
| 49 | |
FUJITA Tomonori | 9ff26ee | 2008-03-02 18:30:15 +0900 | [diff] [blame] | 50 | #include <scsi/scsi.h> |
| 51 | #include <scsi/scsi_cmnd.h> |
| 52 | #include <scsi/scsi_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #include <scsi/scsi_host.h> |
| 54 | #include <scsi/scsicam.h> |
FUJITA Tomonori | a34c4e9 | 2008-03-25 09:26:50 +0900 | [diff] [blame] | 55 | #include <scsi/scsi_eh.h> |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 56 | #include <scsi/scsi_dbg.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 58 | #include "sd.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #include "scsi_logging.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 61 | #define SCSI_DEBUG_VERSION "1.82" |
| 62 | static const char * scsi_debug_version_date = "20100324"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 64 | /* Additional Sense Code (ASC) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 65 | #define NO_ADDITIONAL_SENSE 0x0 |
| 66 | #define LOGICAL_UNIT_NOT_READY 0x4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | #define UNRECOVERED_READ_ERR 0x11 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 68 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | #define INVALID_OPCODE 0x20 |
| 70 | #define ADDR_OUT_OF_RANGE 0x21 |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 71 | #define INVALID_COMMAND_OPCODE 0x20 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | #define INVALID_FIELD_IN_CDB 0x24 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 73 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | #define POWERON_RESET 0x29 |
| 75 | #define SAVING_PARAMS_UNSUP 0x39 |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 76 | #define TRANSPORT_PROBLEM 0x4b |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 77 | #define THRESHOLD_EXCEEDED 0x5d |
| 78 | #define LOW_POWER_COND_ON 0x5e |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 80 | /* Additional Sense Code Qualifier (ASCQ) */ |
| 81 | #define ACK_NAK_TO 0x3 |
| 82 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ |
| 84 | |
| 85 | /* Default values for driver parameters */ |
| 86 | #define DEF_NUM_HOST 1 |
| 87 | #define DEF_NUM_TGTS 1 |
| 88 | #define DEF_MAX_LUNS 1 |
| 89 | /* With these defaults, this driver will make 1 host with 1 target |
| 90 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. |
| 91 | */ |
| 92 | #define DEF_DELAY 1 |
| 93 | #define DEF_DEV_SIZE_MB 8 |
| 94 | #define DEF_EVERY_NTH 0 |
| 95 | #define DEF_NUM_PARTS 0 |
| 96 | #define DEF_OPTS 0 |
| 97 | #define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ |
| 98 | #define DEF_PTYPE 0 |
| 99 | #define DEF_D_SENSE 0 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 100 | #define DEF_NO_LUN_0 0 |
| 101 | #define DEF_VIRTUAL_GB 0 |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 102 | #define DEF_FAKE_RW 0 |
| 103 | #define DEF_VPD_USE_HOSTNO 1 |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 104 | #define DEF_SECTOR_SIZE 512 |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 105 | #define DEF_DIX 0 |
| 106 | #define DEF_DIF 0 |
| 107 | #define DEF_GUARD 0 |
| 108 | #define DEF_ATO 1 |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 109 | #define DEF_PHYSBLK_EXP 0 |
| 110 | #define DEF_LOWEST_ALIGNED 0 |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 111 | #define DEF_OPT_BLKS 64 |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 112 | #define DEF_UNMAP_MAX_BLOCKS 0 |
| 113 | #define DEF_UNMAP_MAX_DESC 0 |
| 114 | #define DEF_UNMAP_GRANULARITY 0 |
| 115 | #define DEF_UNMAP_ALIGNMENT 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
| 117 | /* bit mask values for scsi_debug_opts */ |
| 118 | #define SCSI_DEBUG_OPT_NOISE 1 |
| 119 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 |
| 120 | #define SCSI_DEBUG_OPT_TIMEOUT 4 |
| 121 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 122 | #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 123 | #define SCSI_DEBUG_OPT_DIF_ERR 32 |
| 124 | #define SCSI_DEBUG_OPT_DIX_ERR 64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
| 126 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| 127 | * - a RECOVERED_ERROR is simulated on successful read and write |
| 128 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 129 | * - a TRANSPORT_ERROR is simulated on successful read and write |
| 130 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | * |
| 132 | * When "every_nth" < 0 then after "- every_nth" commands: |
| 133 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| 134 | * - a RECOVERED_ERROR is simulated on successful read and write |
| 135 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 136 | * - a TRANSPORT_ERROR is simulated on successful read and write |
| 137 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | * This will continue until some other action occurs (e.g. the user |
| 139 | * writing a new value (other than -1 or 1) to every_nth via sysfs). |
| 140 | */ |
| 141 | |
| 142 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this |
| 143 | * sector on read commands: */ |
| 144 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ |
| 145 | |
| 146 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) |
| 147 | * or "peripheral device" addressing (value 0) */ |
| 148 | #define SAM2_LUN_ADDRESS_METHOD 0 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 149 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 151 | /* Can queue up to this number of commands. Typically commands that |
| 152 | * that have a non-zero delay are queued. */ |
| 153 | #define SCSI_DEBUG_CANQUEUE 255 |
| 154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | static int scsi_debug_add_host = DEF_NUM_HOST; |
| 156 | static int scsi_debug_delay = DEF_DELAY; |
| 157 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; |
| 158 | static int scsi_debug_every_nth = DEF_EVERY_NTH; |
| 159 | static int scsi_debug_max_luns = DEF_MAX_LUNS; |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 160 | static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | static int scsi_debug_num_parts = DEF_NUM_PARTS; |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 162 | static int scsi_debug_no_uld = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ |
| 164 | static int scsi_debug_opts = DEF_OPTS; |
| 165 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; |
| 166 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ |
| 167 | static int scsi_debug_dsense = DEF_D_SENSE; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 168 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
| 169 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 170 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
| 171 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 172 | static int scsi_debug_sector_size = DEF_SECTOR_SIZE; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 173 | static int scsi_debug_dix = DEF_DIX; |
| 174 | static int scsi_debug_dif = DEF_DIF; |
| 175 | static int scsi_debug_guard = DEF_GUARD; |
| 176 | static int scsi_debug_ato = DEF_ATO; |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 177 | static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP; |
| 178 | static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED; |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 179 | static int scsi_debug_opt_blks = DEF_OPT_BLKS; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 180 | static int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC; |
| 181 | static int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS; |
| 182 | static int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY; |
| 183 | static int scsi_debug_unmap_alignment = DEF_UNMAP_ALIGNMENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
| 185 | static int scsi_debug_cmnd_count = 0; |
| 186 | |
| 187 | #define DEV_READONLY(TGT) (0) |
| 188 | #define DEV_REMOVEABLE(TGT) (0) |
| 189 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 190 | static unsigned int sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | static sector_t sdebug_capacity; /* in sectors */ |
| 192 | |
| 193 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages |
| 194 | may still need them */ |
| 195 | static int sdebug_heads; /* heads per disk */ |
| 196 | static int sdebug_cylinders_per; /* cylinders per surface */ |
| 197 | static int sdebug_sectors_per; /* sectors per cylinder */ |
| 198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | #define SDEBUG_MAX_PARTS 4 |
| 200 | |
| 201 | #define SDEBUG_SENSE_LEN 32 |
| 202 | |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 203 | #define SCSI_DEBUG_MAX_CMD_LEN 32 |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | struct sdebug_dev_info { |
| 206 | struct list_head dev_list; |
| 207 | unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ |
| 208 | unsigned int channel; |
| 209 | unsigned int target; |
| 210 | unsigned int lun; |
| 211 | struct sdebug_host_info *sdbg_host; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 212 | unsigned int wlun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | char reset; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 214 | char stopped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | char used; |
| 216 | }; |
| 217 | |
| 218 | struct sdebug_host_info { |
| 219 | struct list_head host_list; |
| 220 | struct Scsi_Host *shost; |
| 221 | struct device dev; |
| 222 | struct list_head dev_info_list; |
| 223 | }; |
| 224 | |
| 225 | #define to_sdebug_host(d) \ |
| 226 | container_of(d, struct sdebug_host_info, dev) |
| 227 | |
| 228 | static LIST_HEAD(sdebug_host_list); |
| 229 | static DEFINE_SPINLOCK(sdebug_host_list_lock); |
| 230 | |
| 231 | typedef void (* done_funct_t) (struct scsi_cmnd *); |
| 232 | |
| 233 | struct sdebug_queued_cmd { |
| 234 | int in_use; |
| 235 | struct timer_list cmnd_timer; |
| 236 | done_funct_t done_funct; |
| 237 | struct scsi_cmnd * a_cmnd; |
| 238 | int scsi_result; |
| 239 | }; |
| 240 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; |
| 241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | static unsigned char * fake_storep; /* ramdisk storage */ |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 243 | static unsigned char *dif_storep; /* protection info */ |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 244 | static void *map_storep; /* provisioning map */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 246 | static unsigned long map_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | static int num_aborts = 0; |
| 248 | static int num_dev_resets = 0; |
| 249 | static int num_bus_resets = 0; |
| 250 | static int num_host_resets = 0; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 251 | static int dix_writes; |
| 252 | static int dix_reads; |
| 253 | static int dif_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | |
| 255 | static DEFINE_SPINLOCK(queued_arr_lock); |
| 256 | static DEFINE_RWLOCK(atomic_rw); |
| 257 | |
| 258 | static char sdebug_proc_name[] = "scsi_debug"; |
| 259 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | static struct bus_type pseudo_lld_bus; |
| 261 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 262 | static inline sector_t dif_offset(sector_t sector) |
| 263 | { |
| 264 | return sector << 3; |
| 265 | } |
| 266 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | static struct device_driver sdebug_driverfs_driver = { |
| 268 | .name = sdebug_proc_name, |
| 269 | .bus = &pseudo_lld_bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | }; |
| 271 | |
| 272 | static const int check_condition_result = |
| 273 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
| 274 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 275 | static const int illegal_condition_result = |
| 276 | (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; |
| 277 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 278 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
| 279 | 0, 0, 0x2, 0x4b}; |
| 280 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 281 | 0, 0, 0x0, 0x0}; |
| 282 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | static int sdebug_add_adapter(void); |
| 284 | static void sdebug_remove_adapter(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 286 | static void sdebug_max_tgts_luns(void) |
| 287 | { |
| 288 | struct sdebug_host_info *sdbg_host; |
| 289 | struct Scsi_Host *hpnt; |
| 290 | |
| 291 | spin_lock(&sdebug_host_list_lock); |
| 292 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
| 293 | hpnt = sdbg_host->shost; |
| 294 | if ((hpnt->this_id >= 0) && |
| 295 | (scsi_debug_num_tgts > hpnt->this_id)) |
| 296 | hpnt->max_id = scsi_debug_num_tgts + 1; |
| 297 | else |
| 298 | hpnt->max_id = scsi_debug_num_tgts; |
| 299 | /* scsi_debug_max_luns; */ |
| 300 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; |
| 301 | } |
| 302 | spin_unlock(&sdebug_host_list_lock); |
| 303 | } |
| 304 | |
| 305 | static void mk_sense_buffer(struct sdebug_dev_info *devip, int key, |
| 306 | int asc, int asq) |
| 307 | { |
| 308 | unsigned char *sbuff; |
| 309 | |
| 310 | sbuff = devip->sense_buff; |
| 311 | memset(sbuff, 0, SDEBUG_SENSE_LEN); |
| 312 | |
| 313 | scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); |
| 314 | |
| 315 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 316 | printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " |
| 317 | "[0x%x,0x%x,0x%x]\n", key, asc, asq); |
| 318 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 320 | static void get_data_transfer_info(unsigned char *cmd, |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 321 | unsigned long long *lba, unsigned int *num, |
| 322 | u32 *ei_lba) |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 323 | { |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 324 | *ei_lba = 0; |
| 325 | |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 326 | switch (*cmd) { |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 327 | case VARIABLE_LENGTH_CMD: |
| 328 | *lba = (u64)cmd[19] | (u64)cmd[18] << 8 | |
| 329 | (u64)cmd[17] << 16 | (u64)cmd[16] << 24 | |
| 330 | (u64)cmd[15] << 32 | (u64)cmd[14] << 40 | |
| 331 | (u64)cmd[13] << 48 | (u64)cmd[12] << 56; |
| 332 | |
| 333 | *ei_lba = (u32)cmd[23] | (u32)cmd[22] << 8 | |
| 334 | (u32)cmd[21] << 16 | (u32)cmd[20] << 24; |
| 335 | |
| 336 | *num = (u32)cmd[31] | (u32)cmd[30] << 8 | (u32)cmd[29] << 16 | |
| 337 | (u32)cmd[28] << 24; |
| 338 | break; |
| 339 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 340 | case WRITE_SAME_16: |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 341 | case WRITE_16: |
| 342 | case READ_16: |
FUJITA Tomonori | d5cdc98 | 2008-03-25 17:04:46 +0900 | [diff] [blame] | 343 | *lba = (u64)cmd[9] | (u64)cmd[8] << 8 | |
| 344 | (u64)cmd[7] << 16 | (u64)cmd[6] << 24 | |
| 345 | (u64)cmd[5] << 32 | (u64)cmd[4] << 40 | |
| 346 | (u64)cmd[3] << 48 | (u64)cmd[2] << 56; |
| 347 | |
| 348 | *num = (u32)cmd[13] | (u32)cmd[12] << 8 | (u32)cmd[11] << 16 | |
| 349 | (u32)cmd[10] << 24; |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 350 | break; |
| 351 | case WRITE_12: |
| 352 | case READ_12: |
FUJITA Tomonori | d5cdc98 | 2008-03-25 17:04:46 +0900 | [diff] [blame] | 353 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
| 354 | (u32)cmd[2] << 24; |
| 355 | |
| 356 | *num = (u32)cmd[9] | (u32)cmd[8] << 8 | (u32)cmd[7] << 16 | |
| 357 | (u32)cmd[6] << 24; |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 358 | break; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 359 | case WRITE_SAME: |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 360 | case WRITE_10: |
| 361 | case READ_10: |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 362 | case XDWRITEREAD_10: |
FUJITA Tomonori | d5cdc98 | 2008-03-25 17:04:46 +0900 | [diff] [blame] | 363 | *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
| 364 | (u32)cmd[2] << 24; |
| 365 | |
| 366 | *num = (u32)cmd[8] | (u32)cmd[7] << 8; |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 367 | break; |
| 368 | case WRITE_6: |
| 369 | case READ_6: |
FUJITA Tomonori | d5cdc98 | 2008-03-25 17:04:46 +0900 | [diff] [blame] | 370 | *lba = (u32)cmd[3] | (u32)cmd[2] << 8 | |
| 371 | (u32)(cmd[1] & 0x1f) << 16; |
FUJITA Tomonori | 3de9f94 | 2008-01-23 01:31:59 +0900 | [diff] [blame] | 372 | *num = (0 == cmd[4]) ? 256 : cmd[4]; |
| 373 | break; |
| 374 | default: |
| 375 | break; |
| 376 | } |
| 377 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
| 380 | { |
| 381 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { |
| 382 | printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); |
| 383 | } |
| 384 | return -EINVAL; |
| 385 | /* return -ENOTTY; // correct return but upsets fdisk */ |
| 386 | } |
| 387 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 388 | static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
| 389 | struct sdebug_dev_info * devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | { |
| 391 | if (devip->reset) { |
| 392 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 393 | printk(KERN_INFO "scsi_debug: Reporting Unit " |
| 394 | "attention: power on reset\n"); |
| 395 | devip->reset = 0; |
| 396 | mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); |
| 397 | return check_condition_result; |
| 398 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 399 | if ((0 == reset_only) && devip->stopped) { |
| 400 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 401 | printk(KERN_INFO "scsi_debug: Reporting Not " |
| 402 | "ready: initializing command required\n"); |
| 403 | mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, |
| 404 | 0x2); |
| 405 | return check_condition_result; |
| 406 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | return 0; |
| 408 | } |
| 409 | |
| 410 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 411 | 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] | 412 | int arr_len) |
| 413 | { |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 414 | int act_len; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 415 | struct scsi_data_buffer *sdb = scsi_in(scp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 417 | if (!sdb->length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | return 0; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 419 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | return (DID_ERROR << 16); |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 421 | |
| 422 | act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, |
| 423 | arr, arr_len); |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 424 | if (sdb->resid) |
| 425 | sdb->resid -= act_len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 426 | else |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 427 | sdb->resid = scsi_bufflen(scp) - act_len; |
| 428 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | return 0; |
| 430 | } |
| 431 | |
| 432 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 433 | static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
| 434 | int arr_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | { |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 436 | if (!scsi_bufflen(scp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | return 0; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 438 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | return -1; |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 440 | |
| 441 | return scsi_sg_copy_to_buffer(scp, arr, arr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | } |
| 443 | |
| 444 | |
| 445 | static const char * inq_vendor_id = "Linux "; |
| 446 | static const char * inq_product_id = "scsi_debug "; |
| 447 | static const char * inq_product_rev = "0004"; |
| 448 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 449 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
| 450 | int target_dev_id, int dev_id_num, |
| 451 | const char * dev_id_str, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 452 | int dev_id_str_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 454 | int num, port_a; |
| 455 | char b[32]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 457 | port_a = target_dev_id + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | /* T10 vendor identifier field format (faked) */ |
| 459 | arr[0] = 0x2; /* ASCII */ |
| 460 | arr[1] = 0x1; |
| 461 | arr[2] = 0x0; |
| 462 | memcpy(&arr[4], inq_vendor_id, 8); |
| 463 | memcpy(&arr[12], inq_product_id, 16); |
| 464 | memcpy(&arr[28], dev_id_str, dev_id_str_len); |
| 465 | num = 8 + 16 + dev_id_str_len; |
| 466 | arr[3] = num; |
| 467 | num += 4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 468 | if (dev_id_num >= 0) { |
| 469 | /* NAA-5, Logical unit identifier (binary) */ |
| 470 | arr[num++] = 0x1; /* binary (not necessarily sas) */ |
| 471 | arr[num++] = 0x3; /* PIV=0, lu, naa */ |
| 472 | arr[num++] = 0x0; |
| 473 | arr[num++] = 0x8; |
| 474 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ |
| 475 | arr[num++] = 0x33; |
| 476 | arr[num++] = 0x33; |
| 477 | arr[num++] = 0x30; |
| 478 | arr[num++] = (dev_id_num >> 24); |
| 479 | arr[num++] = (dev_id_num >> 16) & 0xff; |
| 480 | arr[num++] = (dev_id_num >> 8) & 0xff; |
| 481 | arr[num++] = dev_id_num & 0xff; |
| 482 | /* Target relative port number */ |
| 483 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 484 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ |
| 485 | arr[num++] = 0x0; /* reserved */ |
| 486 | arr[num++] = 0x4; /* length */ |
| 487 | arr[num++] = 0x0; /* reserved */ |
| 488 | arr[num++] = 0x0; /* reserved */ |
| 489 | arr[num++] = 0x0; |
| 490 | arr[num++] = 0x1; /* relative port A */ |
| 491 | } |
| 492 | /* NAA-5, Target port identifier */ |
| 493 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 494 | arr[num++] = 0x93; /* piv=1, target port, naa */ |
| 495 | arr[num++] = 0x0; |
| 496 | arr[num++] = 0x8; |
| 497 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| 498 | arr[num++] = 0x22; |
| 499 | arr[num++] = 0x22; |
| 500 | arr[num++] = 0x20; |
| 501 | arr[num++] = (port_a >> 24); |
| 502 | arr[num++] = (port_a >> 16) & 0xff; |
| 503 | arr[num++] = (port_a >> 8) & 0xff; |
| 504 | arr[num++] = port_a & 0xff; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 505 | /* NAA-5, Target port group identifier */ |
| 506 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 507 | arr[num++] = 0x95; /* piv=1, target port group id */ |
| 508 | arr[num++] = 0x0; |
| 509 | arr[num++] = 0x4; |
| 510 | arr[num++] = 0; |
| 511 | arr[num++] = 0; |
| 512 | arr[num++] = (port_group_id >> 8) & 0xff; |
| 513 | arr[num++] = port_group_id & 0xff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 514 | /* NAA-5, Target device identifier */ |
| 515 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 516 | arr[num++] = 0xa3; /* piv=1, target device, naa */ |
| 517 | arr[num++] = 0x0; |
| 518 | arr[num++] = 0x8; |
| 519 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| 520 | arr[num++] = 0x22; |
| 521 | arr[num++] = 0x22; |
| 522 | arr[num++] = 0x20; |
| 523 | arr[num++] = (target_dev_id >> 24); |
| 524 | arr[num++] = (target_dev_id >> 16) & 0xff; |
| 525 | arr[num++] = (target_dev_id >> 8) & 0xff; |
| 526 | arr[num++] = target_dev_id & 0xff; |
| 527 | /* SCSI name string: Target device identifier */ |
| 528 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ |
| 529 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ |
| 530 | arr[num++] = 0x0; |
| 531 | arr[num++] = 24; |
| 532 | memcpy(arr + num, "naa.52222220", 12); |
| 533 | num += 12; |
| 534 | snprintf(b, sizeof(b), "%08X", target_dev_id); |
| 535 | memcpy(arr + num, b, 8); |
| 536 | num += 8; |
| 537 | memset(arr + num, 0, 4); |
| 538 | num += 4; |
| 539 | return num; |
| 540 | } |
| 541 | |
| 542 | |
| 543 | static unsigned char vpd84_data[] = { |
| 544 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, |
| 545 | 0x22,0x22,0x22,0x0,0xbb,0x1, |
| 546 | 0x22,0x22,0x22,0x0,0xbb,0x2, |
| 547 | }; |
| 548 | |
| 549 | static int inquiry_evpd_84(unsigned char * arr) |
| 550 | { |
| 551 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); |
| 552 | return sizeof(vpd84_data); |
| 553 | } |
| 554 | |
| 555 | static int inquiry_evpd_85(unsigned char * arr) |
| 556 | { |
| 557 | int num = 0; |
| 558 | const char * na1 = "https://www.kernel.org/config"; |
| 559 | const char * na2 = "http://www.kernel.org/log"; |
| 560 | int plen, olen; |
| 561 | |
| 562 | arr[num++] = 0x1; /* lu, storage config */ |
| 563 | arr[num++] = 0x0; /* reserved */ |
| 564 | arr[num++] = 0x0; |
| 565 | olen = strlen(na1); |
| 566 | plen = olen + 1; |
| 567 | if (plen % 4) |
| 568 | plen = ((plen / 4) + 1) * 4; |
| 569 | arr[num++] = plen; /* length, null termianted, padded */ |
| 570 | memcpy(arr + num, na1, olen); |
| 571 | memset(arr + num + olen, 0, plen - olen); |
| 572 | num += plen; |
| 573 | |
| 574 | arr[num++] = 0x4; /* lu, logging */ |
| 575 | arr[num++] = 0x0; /* reserved */ |
| 576 | arr[num++] = 0x0; |
| 577 | olen = strlen(na2); |
| 578 | plen = olen + 1; |
| 579 | if (plen % 4) |
| 580 | plen = ((plen / 4) + 1) * 4; |
| 581 | arr[num++] = plen; /* length, null terminated, padded */ |
| 582 | memcpy(arr + num, na2, olen); |
| 583 | memset(arr + num + olen, 0, plen - olen); |
| 584 | num += plen; |
| 585 | |
| 586 | return num; |
| 587 | } |
| 588 | |
| 589 | /* SCSI ports VPD page */ |
| 590 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) |
| 591 | { |
| 592 | int num = 0; |
| 593 | int port_a, port_b; |
| 594 | |
| 595 | port_a = target_dev_id + 1; |
| 596 | port_b = port_a + 1; |
| 597 | arr[num++] = 0x0; /* reserved */ |
| 598 | arr[num++] = 0x0; /* reserved */ |
| 599 | arr[num++] = 0x0; |
| 600 | arr[num++] = 0x1; /* relative port 1 (primary) */ |
| 601 | memset(arr + num, 0, 6); |
| 602 | num += 6; |
| 603 | arr[num++] = 0x0; |
| 604 | arr[num++] = 12; /* length tp descriptor */ |
| 605 | /* naa-5 target port identifier (A) */ |
| 606 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 607 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 608 | arr[num++] = 0x0; /* reserved */ |
| 609 | arr[num++] = 0x8; /* length */ |
| 610 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| 611 | arr[num++] = 0x22; |
| 612 | arr[num++] = 0x22; |
| 613 | arr[num++] = 0x20; |
| 614 | arr[num++] = (port_a >> 24); |
| 615 | arr[num++] = (port_a >> 16) & 0xff; |
| 616 | arr[num++] = (port_a >> 8) & 0xff; |
| 617 | arr[num++] = port_a & 0xff; |
| 618 | |
| 619 | arr[num++] = 0x0; /* reserved */ |
| 620 | arr[num++] = 0x0; /* reserved */ |
| 621 | arr[num++] = 0x0; |
| 622 | arr[num++] = 0x2; /* relative port 2 (secondary) */ |
| 623 | memset(arr + num, 0, 6); |
| 624 | num += 6; |
| 625 | arr[num++] = 0x0; |
| 626 | arr[num++] = 12; /* length tp descriptor */ |
| 627 | /* naa-5 target port identifier (B) */ |
| 628 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 629 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 630 | arr[num++] = 0x0; /* reserved */ |
| 631 | arr[num++] = 0x8; /* length */ |
| 632 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| 633 | arr[num++] = 0x22; |
| 634 | arr[num++] = 0x22; |
| 635 | arr[num++] = 0x20; |
| 636 | arr[num++] = (port_b >> 24); |
| 637 | arr[num++] = (port_b >> 16) & 0xff; |
| 638 | arr[num++] = (port_b >> 8) & 0xff; |
| 639 | arr[num++] = port_b & 0xff; |
| 640 | |
| 641 | return num; |
| 642 | } |
| 643 | |
| 644 | |
| 645 | static unsigned char vpd89_data[] = { |
| 646 | /* from 4th byte */ 0,0,0,0, |
| 647 | 'l','i','n','u','x',' ',' ',' ', |
| 648 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', |
| 649 | '1','2','3','4', |
| 650 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, |
| 651 | 0xec,0,0,0, |
| 652 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, |
| 653 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, |
| 654 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, |
| 655 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, |
| 656 | 0x53,0x41, |
| 657 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 658 | 0x20,0x20, |
| 659 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 660 | 0x10,0x80, |
| 661 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, |
| 662 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, |
| 663 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, |
| 664 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, |
| 665 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, |
| 666 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, |
| 667 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, |
| 668 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 669 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 670 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 671 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, |
| 672 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, |
| 673 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, |
| 674 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, |
| 675 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 676 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 677 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 678 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 679 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 680 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 681 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 682 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 683 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 684 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 685 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 686 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, |
| 687 | }; |
| 688 | |
| 689 | static int inquiry_evpd_89(unsigned char * arr) |
| 690 | { |
| 691 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); |
| 692 | return sizeof(vpd89_data); |
| 693 | } |
| 694 | |
| 695 | |
Douglas Gilbert | 1e49f78 | 2009-10-29 01:48:31 -0400 | [diff] [blame] | 696 | /* Block limits VPD page (SBC-3) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 697 | static unsigned char vpdb0_data[] = { |
Douglas Gilbert | 1e49f78 | 2009-10-29 01:48:31 -0400 | [diff] [blame] | 698 | /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64, |
| 699 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 700 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 701 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 702 | }; |
| 703 | |
| 704 | static int inquiry_evpd_b0(unsigned char * arr) |
| 705 | { |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 706 | unsigned int gran; |
| 707 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 708 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 709 | |
| 710 | /* Optimal transfer length granularity */ |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 711 | gran = 1 << scsi_debug_physblk_exp; |
| 712 | arr[2] = (gran >> 8) & 0xff; |
| 713 | arr[3] = gran & 0xff; |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 714 | |
| 715 | /* Maximum Transfer Length */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 716 | if (sdebug_store_sectors > 0x400) { |
| 717 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; |
| 718 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; |
| 719 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; |
| 720 | arr[7] = sdebug_store_sectors & 0xff; |
| 721 | } |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 722 | |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 723 | /* Optimal Transfer Length */ |
| 724 | put_unaligned_be32(scsi_debug_opt_blks, &arr[8]); |
| 725 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 726 | if (scsi_debug_unmap_max_desc) { |
| 727 | unsigned int blocks; |
| 728 | |
| 729 | if (scsi_debug_unmap_max_blocks) |
| 730 | blocks = scsi_debug_unmap_max_blocks; |
| 731 | else |
| 732 | blocks = 0xffffffff; |
| 733 | |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 734 | /* Maximum Unmap LBA Count */ |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 735 | put_unaligned_be32(blocks, &arr[16]); |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 736 | |
| 737 | /* Maximum Unmap Block Descriptor Count */ |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 738 | put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]); |
| 739 | } |
| 740 | |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 741 | /* Unmap Granularity Alignment */ |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 742 | if (scsi_debug_unmap_alignment) { |
| 743 | put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]); |
| 744 | arr[28] |= 0x80; /* UGAVALID */ |
| 745 | } |
| 746 | |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 747 | /* Optimal Unmap Granularity */ |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 748 | if (scsi_debug_unmap_granularity) { |
| 749 | put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]); |
| 750 | return 0x3c; /* Mandatory page length for thin provisioning */ |
| 751 | } |
| 752 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 753 | return sizeof(vpdb0_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | } |
| 755 | |
Douglas Gilbert | 1e49f78 | 2009-10-29 01:48:31 -0400 | [diff] [blame] | 756 | /* Block device characteristics VPD page (SBC-3) */ |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 757 | static int inquiry_evpd_b1(unsigned char *arr) |
| 758 | { |
| 759 | memset(arr, 0, 0x3c); |
| 760 | arr[0] = 0; |
Douglas Gilbert | 1e49f78 | 2009-10-29 01:48:31 -0400 | [diff] [blame] | 761 | arr[1] = 1; /* non rotating medium (e.g. solid state) */ |
| 762 | arr[2] = 0; |
| 763 | arr[3] = 5; /* less than 1.8" */ |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 764 | |
| 765 | return 0x3c; |
| 766 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | |
| 768 | #define SDEBUG_LONG_INQ_SZ 96 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 769 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | |
| 771 | static int resp_inquiry(struct scsi_cmnd * scp, int target, |
| 772 | struct sdebug_dev_info * devip) |
| 773 | { |
| 774 | unsigned char pq_pdt; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 775 | unsigned char * arr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 777 | int alloc_len, n, ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | |
| 779 | alloc_len = (cmd[3] << 8) + cmd[4]; |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 780 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
| 781 | if (! arr) |
| 782 | return DID_REQUEUE << 16; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 783 | if (devip->wlun) |
| 784 | pq_pdt = 0x1e; /* present, wlun */ |
| 785 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) |
| 786 | pq_pdt = 0x7f; /* not present, no device type */ |
| 787 | else |
| 788 | pq_pdt = (scsi_debug_ptype & 0x1f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | arr[0] = pq_pdt; |
| 790 | if (0x2 & cmd[1]) { /* CMDDT bit set */ |
| 791 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 792 | 0); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 793 | kfree(arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | return check_condition_result; |
| 795 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 796 | int lu_id_num, port_group_id, target_dev_id, len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 797 | char lu_id_str[6]; |
| 798 | int host_no = devip->sdbg_host->shost->host_no; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 800 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
| 801 | (devip->channel & 0x7f); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 802 | if (0 == scsi_debug_vpd_use_hostno) |
| 803 | host_no = 0; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 804 | lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
| 805 | (devip->target * 1000) + devip->lun); |
| 806 | target_dev_id = ((host_no + 1) * 2000) + |
| 807 | (devip->target * 1000) - 3; |
| 808 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | if (0 == cmd[2]) { /* supported vital product data pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 810 | arr[1] = cmd[2]; /*sanity */ |
| 811 | n = 4; |
| 812 | arr[n++] = 0x0; /* this page */ |
| 813 | arr[n++] = 0x80; /* unit serial number */ |
| 814 | arr[n++] = 0x83; /* device identification */ |
| 815 | arr[n++] = 0x84; /* software interface ident. */ |
| 816 | arr[n++] = 0x85; /* management network addresses */ |
| 817 | arr[n++] = 0x86; /* extended inquiry */ |
| 818 | arr[n++] = 0x87; /* mode page policy */ |
| 819 | arr[n++] = 0x88; /* SCSI ports */ |
| 820 | arr[n++] = 0x89; /* ATA information */ |
| 821 | arr[n++] = 0xb0; /* Block limits (SBC) */ |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 822 | arr[n++] = 0xb1; /* Block characteristics (SBC) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 823 | arr[3] = n - 4; /* number of supported VPD pages */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 825 | arr[1] = cmd[2]; /*sanity */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | arr[3] = len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 827 | memcpy(&arr[4], lu_id_str, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | } else if (0x83 == cmd[2]) { /* device identification */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 829 | arr[1] = cmd[2]; /*sanity */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 830 | arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
| 831 | target_dev_id, lu_id_num, |
| 832 | lu_id_str, len); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 833 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
| 834 | arr[1] = cmd[2]; /*sanity */ |
| 835 | arr[3] = inquiry_evpd_84(&arr[4]); |
| 836 | } else if (0x85 == cmd[2]) { /* Management network addresses */ |
| 837 | arr[1] = cmd[2]; /*sanity */ |
| 838 | arr[3] = inquiry_evpd_85(&arr[4]); |
| 839 | } else if (0x86 == cmd[2]) { /* extended inquiry */ |
| 840 | arr[1] = cmd[2]; /*sanity */ |
| 841 | arr[3] = 0x3c; /* number of following entries */ |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 842 | if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) |
| 843 | arr[4] = 0x4; /* SPT: GRD_CHK:1 */ |
| 844 | else if (scsi_debug_dif) |
| 845 | arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ |
| 846 | else |
| 847 | arr[4] = 0x0; /* no protection stuff */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 848 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
| 849 | } else if (0x87 == cmd[2]) { /* mode page policy */ |
| 850 | arr[1] = cmd[2]; /*sanity */ |
| 851 | arr[3] = 0x8; /* number of following entries */ |
| 852 | arr[4] = 0x2; /* disconnect-reconnect mp */ |
| 853 | arr[6] = 0x80; /* mlus, shared */ |
| 854 | arr[8] = 0x18; /* protocol specific lu */ |
| 855 | arr[10] = 0x82; /* mlus, per initiator port */ |
| 856 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ |
| 857 | arr[1] = cmd[2]; /*sanity */ |
| 858 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); |
| 859 | } else if (0x89 == cmd[2]) { /* ATA information */ |
| 860 | arr[1] = cmd[2]; /*sanity */ |
| 861 | n = inquiry_evpd_89(&arr[4]); |
| 862 | arr[2] = (n >> 8); |
| 863 | arr[3] = (n & 0xff); |
| 864 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ |
| 865 | arr[1] = cmd[2]; /*sanity */ |
| 866 | arr[3] = inquiry_evpd_b0(&arr[4]); |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 867 | } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */ |
| 868 | arr[1] = cmd[2]; /*sanity */ |
| 869 | arr[3] = inquiry_evpd_b1(&arr[4]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | } else { |
| 871 | /* Illegal request, invalid field in cdb */ |
| 872 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 873 | INVALID_FIELD_IN_CDB, 0); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 874 | kfree(arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | return check_condition_result; |
| 876 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 877 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 878 | ret = fill_from_dev_buffer(scp, arr, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 879 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 880 | kfree(arr); |
| 881 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | } |
| 883 | /* drops through here for a standard inquiry */ |
| 884 | arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */ |
| 885 | arr[2] = scsi_debug_scsi_level; |
| 886 | arr[3] = 2; /* response_data_format==2 */ |
| 887 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 888 | arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 889 | if (0 == scsi_debug_vpd_use_hostno) |
| 890 | arr[5] = 0x10; /* claim: implicit TGPS */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 891 | arr[6] = 0x10; /* claim: MultiP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 893 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | memcpy(&arr[8], inq_vendor_id, 8); |
| 895 | memcpy(&arr[16], inq_product_id, 16); |
| 896 | memcpy(&arr[32], inq_product_rev, 4); |
| 897 | /* version descriptors (2 bytes each) follow */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 898 | arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ |
| 899 | arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ |
| 900 | n = 62; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | if (scsi_debug_ptype == 0) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 902 | arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | } else if (scsi_debug_ptype == 1) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 904 | arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 906 | arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 907 | ret = fill_from_dev_buffer(scp, arr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 909 | kfree(arr); |
| 910 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | } |
| 912 | |
| 913 | static int resp_requests(struct scsi_cmnd * scp, |
| 914 | struct sdebug_dev_info * devip) |
| 915 | { |
| 916 | unsigned char * sbuff; |
| 917 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 918 | unsigned char arr[SDEBUG_SENSE_LEN]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 919 | int want_dsense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | int len = 18; |
| 921 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 922 | memset(arr, 0, sizeof(arr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | if (devip->reset == 1) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 924 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
| 925 | want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | sbuff = devip->sense_buff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 927 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
| 928 | if (want_dsense) { |
| 929 | arr[0] = 0x72; |
| 930 | arr[1] = 0x0; /* NO_SENSE in sense_key */ |
| 931 | arr[2] = THRESHOLD_EXCEEDED; |
| 932 | arr[3] = 0xff; /* TEST set and MRIE==6 */ |
| 933 | } else { |
| 934 | arr[0] = 0x70; |
| 935 | arr[2] = 0x0; /* NO_SENSE in sense_key */ |
| 936 | arr[7] = 0xa; /* 18 byte sense buffer */ |
| 937 | arr[12] = THRESHOLD_EXCEEDED; |
| 938 | arr[13] = 0xff; /* TEST set and MRIE==6 */ |
| 939 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 940 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | memcpy(arr, sbuff, SDEBUG_SENSE_LEN); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 942 | if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
| 943 | /* DESC bit set and sense_buff in fixed format */ |
| 944 | memset(arr, 0, sizeof(arr)); |
| 945 | arr[0] = 0x72; |
| 946 | arr[1] = sbuff[2]; /* sense key */ |
| 947 | arr[2] = sbuff[12]; /* asc */ |
| 948 | arr[3] = sbuff[13]; /* ascq */ |
| 949 | len = 8; |
| 950 | } |
| 951 | } |
| 952 | mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | return fill_from_dev_buffer(scp, arr, len); |
| 954 | } |
| 955 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 956 | static int resp_start_stop(struct scsi_cmnd * scp, |
| 957 | struct sdebug_dev_info * devip) |
| 958 | { |
| 959 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 960 | int power_cond, errsts, start; |
| 961 | |
| 962 | if ((errsts = check_readiness(scp, 1, devip))) |
| 963 | return errsts; |
| 964 | power_cond = (cmd[4] & 0xf0) >> 4; |
| 965 | if (power_cond) { |
| 966 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 967 | 0); |
| 968 | return check_condition_result; |
| 969 | } |
| 970 | start = cmd[4] & 1; |
| 971 | if (start == devip->stopped) |
| 972 | devip->stopped = !start; |
| 973 | return 0; |
| 974 | } |
| 975 | |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 976 | static sector_t get_sdebug_capacity(void) |
| 977 | { |
| 978 | if (scsi_debug_virtual_gb > 0) |
Douglas Gilbert | 5447ed6 | 2010-04-25 12:30:23 +0200 | [diff] [blame] | 979 | return (sector_t)scsi_debug_virtual_gb * |
| 980 | (1073741824 / scsi_debug_sector_size); |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 981 | else |
| 982 | return sdebug_store_sectors; |
| 983 | } |
| 984 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | #define SDEBUG_READCAP_ARR_SZ 8 |
| 986 | static int resp_readcap(struct scsi_cmnd * scp, |
| 987 | struct sdebug_dev_info * devip) |
| 988 | { |
| 989 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 990 | unsigned int capac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | int errsts; |
| 992 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 993 | if ((errsts = check_readiness(scp, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | return errsts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 995 | /* following just in case virtual_gb changed */ |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 996 | sdebug_capacity = get_sdebug_capacity(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 998 | if (sdebug_capacity < 0xffffffff) { |
| 999 | capac = (unsigned int)sdebug_capacity - 1; |
| 1000 | arr[0] = (capac >> 24); |
| 1001 | arr[1] = (capac >> 16) & 0xff; |
| 1002 | arr[2] = (capac >> 8) & 0xff; |
| 1003 | arr[3] = capac & 0xff; |
| 1004 | } else { |
| 1005 | arr[0] = 0xff; |
| 1006 | arr[1] = 0xff; |
| 1007 | arr[2] = 0xff; |
| 1008 | arr[3] = 0xff; |
| 1009 | } |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1010 | arr[6] = (scsi_debug_sector_size >> 8) & 0xff; |
| 1011 | arr[7] = scsi_debug_sector_size & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
| 1013 | } |
| 1014 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1015 | #define SDEBUG_READCAP16_ARR_SZ 32 |
| 1016 | static int resp_readcap16(struct scsi_cmnd * scp, |
| 1017 | struct sdebug_dev_info * devip) |
| 1018 | { |
| 1019 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1020 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; |
| 1021 | unsigned long long capac; |
| 1022 | int errsts, k, alloc_len; |
| 1023 | |
| 1024 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1025 | return errsts; |
| 1026 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) |
| 1027 | + cmd[13]); |
| 1028 | /* following just in case virtual_gb changed */ |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 1029 | sdebug_capacity = get_sdebug_capacity(); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1030 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
| 1031 | capac = sdebug_capacity - 1; |
| 1032 | for (k = 0; k < 8; ++k, capac >>= 8) |
| 1033 | arr[7 - k] = capac & 0xff; |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1034 | arr[8] = (scsi_debug_sector_size >> 24) & 0xff; |
| 1035 | arr[9] = (scsi_debug_sector_size >> 16) & 0xff; |
| 1036 | arr[10] = (scsi_debug_sector_size >> 8) & 0xff; |
| 1037 | arr[11] = scsi_debug_sector_size & 0xff; |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 1038 | arr[13] = scsi_debug_physblk_exp & 0xf; |
| 1039 | arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1040 | |
| 1041 | if (scsi_debug_unmap_granularity) |
| 1042 | arr[14] |= 0x80; /* TPE */ |
| 1043 | |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 1044 | arr[15] = scsi_debug_lowest_aligned & 0xff; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1045 | |
| 1046 | if (scsi_debug_dif) { |
| 1047 | arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */ |
| 1048 | arr[12] |= 1; /* PROT_EN */ |
| 1049 | } |
| 1050 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1051 | return fill_from_dev_buffer(scp, arr, |
| 1052 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); |
| 1053 | } |
| 1054 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1055 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
| 1056 | |
| 1057 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, |
| 1058 | struct sdebug_dev_info * devip) |
| 1059 | { |
| 1060 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1061 | unsigned char * arr; |
| 1062 | int host_no = devip->sdbg_host->shost->host_no; |
| 1063 | int n, ret, alen, rlen; |
| 1064 | int port_group_a, port_group_b, port_a, port_b; |
| 1065 | |
| 1066 | alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) |
| 1067 | + cmd[9]); |
| 1068 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 1069 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
| 1070 | if (! arr) |
| 1071 | return DID_REQUEUE << 16; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1072 | /* |
| 1073 | * EVPD page 0x88 states we have two ports, one |
| 1074 | * real and a fake port with no device connected. |
| 1075 | * So we create two port groups with one port each |
| 1076 | * and set the group with port B to unavailable. |
| 1077 | */ |
| 1078 | port_a = 0x1; /* relative port A */ |
| 1079 | port_b = 0x2; /* relative port B */ |
| 1080 | port_group_a = (((host_no + 1) & 0x7f) << 8) + |
| 1081 | (devip->channel & 0x7f); |
| 1082 | port_group_b = (((host_no + 1) & 0x7f) << 8) + |
| 1083 | (devip->channel & 0x7f) + 0x80; |
| 1084 | |
| 1085 | /* |
| 1086 | * The asymmetric access state is cycled according to the host_id. |
| 1087 | */ |
| 1088 | n = 4; |
| 1089 | if (0 == scsi_debug_vpd_use_hostno) { |
| 1090 | arr[n++] = host_no % 3; /* Asymm access state */ |
| 1091 | arr[n++] = 0x0F; /* claim: all states are supported */ |
| 1092 | } else { |
| 1093 | arr[n++] = 0x0; /* Active/Optimized path */ |
| 1094 | arr[n++] = 0x01; /* claim: only support active/optimized paths */ |
| 1095 | } |
| 1096 | arr[n++] = (port_group_a >> 8) & 0xff; |
| 1097 | arr[n++] = port_group_a & 0xff; |
| 1098 | arr[n++] = 0; /* Reserved */ |
| 1099 | arr[n++] = 0; /* Status code */ |
| 1100 | arr[n++] = 0; /* Vendor unique */ |
| 1101 | arr[n++] = 0x1; /* One port per group */ |
| 1102 | arr[n++] = 0; /* Reserved */ |
| 1103 | arr[n++] = 0; /* Reserved */ |
| 1104 | arr[n++] = (port_a >> 8) & 0xff; |
| 1105 | arr[n++] = port_a & 0xff; |
| 1106 | arr[n++] = 3; /* Port unavailable */ |
| 1107 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ |
| 1108 | arr[n++] = (port_group_b >> 8) & 0xff; |
| 1109 | arr[n++] = port_group_b & 0xff; |
| 1110 | arr[n++] = 0; /* Reserved */ |
| 1111 | arr[n++] = 0; /* Status code */ |
| 1112 | arr[n++] = 0; /* Vendor unique */ |
| 1113 | arr[n++] = 0x1; /* One port per group */ |
| 1114 | arr[n++] = 0; /* Reserved */ |
| 1115 | arr[n++] = 0; /* Reserved */ |
| 1116 | arr[n++] = (port_b >> 8) & 0xff; |
| 1117 | arr[n++] = port_b & 0xff; |
| 1118 | |
| 1119 | rlen = n - 4; |
| 1120 | arr[0] = (rlen >> 24) & 0xff; |
| 1121 | arr[1] = (rlen >> 16) & 0xff; |
| 1122 | arr[2] = (rlen >> 8) & 0xff; |
| 1123 | arr[3] = rlen & 0xff; |
| 1124 | |
| 1125 | /* |
| 1126 | * Return the smallest value of either |
| 1127 | * - The allocated length |
| 1128 | * - The constructed command length |
| 1129 | * - The maximum array size |
| 1130 | */ |
| 1131 | rlen = min(alen,n); |
| 1132 | ret = fill_from_dev_buffer(scp, arr, |
| 1133 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); |
| 1134 | kfree(arr); |
| 1135 | return ret; |
| 1136 | } |
| 1137 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | /* <<Following mode page info copied from ST318451LW>> */ |
| 1139 | |
| 1140 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) |
| 1141 | { /* Read-Write Error Recovery page for mode_sense */ |
| 1142 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, |
| 1143 | 5, 0, 0xff, 0xff}; |
| 1144 | |
| 1145 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); |
| 1146 | if (1 == pcontrol) |
| 1147 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); |
| 1148 | return sizeof(err_recov_pg); |
| 1149 | } |
| 1150 | |
| 1151 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) |
| 1152 | { /* Disconnect-Reconnect page for mode_sense */ |
| 1153 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, |
| 1154 | 0, 0, 0, 0, 0, 0, 0, 0}; |
| 1155 | |
| 1156 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); |
| 1157 | if (1 == pcontrol) |
| 1158 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); |
| 1159 | return sizeof(disconnect_pg); |
| 1160 | } |
| 1161 | |
| 1162 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) |
| 1163 | { /* Format device page for mode_sense */ |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1164 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
| 1165 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1166 | 0, 0, 0, 0, 0x40, 0, 0, 0}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1168 | memcpy(p, format_pg, sizeof(format_pg)); |
| 1169 | p[10] = (sdebug_sectors_per >> 8) & 0xff; |
| 1170 | p[11] = sdebug_sectors_per & 0xff; |
| 1171 | p[12] = (scsi_debug_sector_size >> 8) & 0xff; |
| 1172 | p[13] = scsi_debug_sector_size & 0xff; |
| 1173 | if (DEV_REMOVEABLE(target)) |
| 1174 | p[20] |= 0x20; /* should agree with INQUIRY */ |
| 1175 | if (1 == pcontrol) |
| 1176 | memset(p + 2, 0, sizeof(format_pg) - 2); |
| 1177 | return sizeof(format_pg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | } |
| 1179 | |
| 1180 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) |
| 1181 | { /* Caching page for mode_sense */ |
| 1182 | unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, |
| 1183 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; |
| 1184 | |
| 1185 | memcpy(p, caching_pg, sizeof(caching_pg)); |
| 1186 | if (1 == pcontrol) |
| 1187 | memset(p + 2, 0, sizeof(caching_pg) - 2); |
| 1188 | return sizeof(caching_pg); |
| 1189 | } |
| 1190 | |
| 1191 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) |
| 1192 | { /* Control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1193 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
| 1194 | 0, 0, 0, 0}; |
| 1195 | 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] | 1196 | 0, 0, 0x2, 0x4b}; |
| 1197 | |
| 1198 | if (scsi_debug_dsense) |
| 1199 | ctrl_m_pg[2] |= 0x4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1200 | else |
| 1201 | ctrl_m_pg[2] &= ~0x4; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1202 | |
| 1203 | if (scsi_debug_ato) |
| 1204 | ctrl_m_pg[5] |= 0x80; /* ATO=1 */ |
| 1205 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
| 1207 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1208 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
| 1209 | else if (2 == pcontrol) |
| 1210 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | return sizeof(ctrl_m_pg); |
| 1212 | } |
| 1213 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1214 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
| 1216 | { /* Informational Exceptions control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1217 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
| 1218 | 0, 0, 0x0, 0x0}; |
| 1219 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 1220 | 0, 0, 0x0, 0x0}; |
| 1221 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
| 1223 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1224 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
| 1225 | else if (2 == pcontrol) |
| 1226 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | return sizeof(iec_m_pg); |
| 1228 | } |
| 1229 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1230 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
| 1231 | { /* SAS SSP mode page - short format for mode_sense */ |
| 1232 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, |
| 1233 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; |
| 1234 | |
| 1235 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); |
| 1236 | if (1 == pcontrol) |
| 1237 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); |
| 1238 | return sizeof(sas_sf_m_pg); |
| 1239 | } |
| 1240 | |
| 1241 | |
| 1242 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, |
| 1243 | int target_dev_id) |
| 1244 | { /* SAS phy control and discover mode page for mode_sense */ |
| 1245 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, |
| 1246 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 1247 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 1248 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 1249 | 0x2, 0, 0, 0, 0, 0, 0, 0, |
| 1250 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1251 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1252 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 1253 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 1254 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 1255 | 0x3, 0, 0, 0, 0, 0, 0, 0, |
| 1256 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1257 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1258 | }; |
| 1259 | int port_a, port_b; |
| 1260 | |
| 1261 | port_a = target_dev_id + 1; |
| 1262 | port_b = port_a + 1; |
| 1263 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); |
| 1264 | p[20] = (port_a >> 24); |
| 1265 | p[21] = (port_a >> 16) & 0xff; |
| 1266 | p[22] = (port_a >> 8) & 0xff; |
| 1267 | p[23] = port_a & 0xff; |
| 1268 | p[48 + 20] = (port_b >> 24); |
| 1269 | p[48 + 21] = (port_b >> 16) & 0xff; |
| 1270 | p[48 + 22] = (port_b >> 8) & 0xff; |
| 1271 | p[48 + 23] = port_b & 0xff; |
| 1272 | if (1 == pcontrol) |
| 1273 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); |
| 1274 | return sizeof(sas_pcd_m_pg); |
| 1275 | } |
| 1276 | |
| 1277 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) |
| 1278 | { /* SAS SSP shared protocol specific port mode subpage */ |
| 1279 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, |
| 1280 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1281 | }; |
| 1282 | |
| 1283 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); |
| 1284 | if (1 == pcontrol) |
| 1285 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); |
| 1286 | return sizeof(sas_sha_m_pg); |
| 1287 | } |
| 1288 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | #define SDEBUG_MAX_MSENSE_SZ 256 |
| 1290 | |
| 1291 | static int resp_mode_sense(struct scsi_cmnd * scp, int target, |
| 1292 | struct sdebug_dev_info * devip) |
| 1293 | { |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1294 | unsigned char dbd, llbaa; |
| 1295 | int pcontrol, pcode, subpcode, bd_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | unsigned char dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1297 | int k, alloc_len, msense_6, offset, len, errsts, target_dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | unsigned char * ap; |
| 1299 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; |
| 1300 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1301 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1302 | if ((errsts = check_readiness(scp, 1, devip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1303 | return errsts; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1304 | dbd = !!(cmd[1] & 0x8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 1306 | pcode = cmd[2] & 0x3f; |
| 1307 | subpcode = cmd[3]; |
| 1308 | msense_6 = (MODE_SENSE == cmd[0]); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1309 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
| 1310 | if ((0 == scsi_debug_ptype) && (0 == dbd)) |
| 1311 | bd_len = llbaa ? 16 : 8; |
| 1312 | else |
| 1313 | bd_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
| 1315 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); |
| 1316 | if (0x3 == pcontrol) { /* Saving values not supported */ |
| 1317 | mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, |
| 1318 | 0); |
| 1319 | return check_condition_result; |
| 1320 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1321 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
| 1322 | (devip->target * 1000) - 3; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1323 | /* set DPOFUA bit for disks */ |
| 1324 | if (0 == scsi_debug_ptype) |
| 1325 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; |
| 1326 | else |
| 1327 | dev_spec = 0x0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1328 | if (msense_6) { |
| 1329 | arr[2] = dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1330 | arr[3] = bd_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | offset = 4; |
| 1332 | } else { |
| 1333 | arr[3] = dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1334 | if (16 == bd_len) |
| 1335 | arr[4] = 0x1; /* set LONGLBA bit */ |
| 1336 | arr[7] = bd_len; /* assume 255 or less */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | offset = 8; |
| 1338 | } |
| 1339 | ap = arr + offset; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 1340 | if ((bd_len > 0) && (!sdebug_capacity)) |
| 1341 | sdebug_capacity = get_sdebug_capacity(); |
| 1342 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1343 | if (8 == bd_len) { |
| 1344 | if (sdebug_capacity > 0xfffffffe) { |
| 1345 | ap[0] = 0xff; |
| 1346 | ap[1] = 0xff; |
| 1347 | ap[2] = 0xff; |
| 1348 | ap[3] = 0xff; |
| 1349 | } else { |
| 1350 | ap[0] = (sdebug_capacity >> 24) & 0xff; |
| 1351 | ap[1] = (sdebug_capacity >> 16) & 0xff; |
| 1352 | ap[2] = (sdebug_capacity >> 8) & 0xff; |
| 1353 | ap[3] = sdebug_capacity & 0xff; |
| 1354 | } |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1355 | ap[6] = (scsi_debug_sector_size >> 8) & 0xff; |
| 1356 | ap[7] = scsi_debug_sector_size & 0xff; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1357 | offset += bd_len; |
| 1358 | ap = arr + offset; |
| 1359 | } else if (16 == bd_len) { |
| 1360 | unsigned long long capac = sdebug_capacity; |
| 1361 | |
| 1362 | for (k = 0; k < 8; ++k, capac >>= 8) |
| 1363 | ap[7 - k] = capac & 0xff; |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1364 | ap[12] = (scsi_debug_sector_size >> 24) & 0xff; |
| 1365 | ap[13] = (scsi_debug_sector_size >> 16) & 0xff; |
| 1366 | ap[14] = (scsi_debug_sector_size >> 8) & 0xff; |
| 1367 | ap[15] = scsi_debug_sector_size & 0xff; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1368 | offset += bd_len; |
| 1369 | ap = arr + offset; |
| 1370 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1372 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
| 1373 | /* TODO: Control Extension page */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1374 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1375 | 0); |
| 1376 | return check_condition_result; |
| 1377 | } |
| 1378 | switch (pcode) { |
| 1379 | case 0x1: /* Read-Write error recovery page, direct access */ |
| 1380 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 1381 | offset += len; |
| 1382 | break; |
| 1383 | case 0x2: /* Disconnect-Reconnect page, all devices */ |
| 1384 | len = resp_disconnect_pg(ap, pcontrol, target); |
| 1385 | offset += len; |
| 1386 | break; |
| 1387 | case 0x3: /* Format device page, direct access */ |
| 1388 | len = resp_format_pg(ap, pcontrol, target); |
| 1389 | offset += len; |
| 1390 | break; |
| 1391 | case 0x8: /* Caching page, direct access */ |
| 1392 | len = resp_caching_pg(ap, pcontrol, target); |
| 1393 | offset += len; |
| 1394 | break; |
| 1395 | case 0xa: /* Control Mode page, all devices */ |
| 1396 | len = resp_ctrl_m_pg(ap, pcontrol, target); |
| 1397 | offset += len; |
| 1398 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1399 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
| 1400 | if ((subpcode > 0x2) && (subpcode < 0xff)) { |
| 1401 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1402 | INVALID_FIELD_IN_CDB, 0); |
| 1403 | return check_condition_result; |
| 1404 | } |
| 1405 | len = 0; |
| 1406 | if ((0x0 == subpcode) || (0xff == subpcode)) |
| 1407 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 1408 | if ((0x1 == subpcode) || (0xff == subpcode)) |
| 1409 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, |
| 1410 | target_dev_id); |
| 1411 | if ((0x2 == subpcode) || (0xff == subpcode)) |
| 1412 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 1413 | offset += len; |
| 1414 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
| 1416 | len = resp_iec_m_pg(ap, pcontrol, target); |
| 1417 | offset += len; |
| 1418 | break; |
| 1419 | case 0x3f: /* Read all Mode pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1420 | if ((0 == subpcode) || (0xff == subpcode)) { |
| 1421 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 1422 | len += resp_disconnect_pg(ap + len, pcontrol, target); |
| 1423 | len += resp_format_pg(ap + len, pcontrol, target); |
| 1424 | len += resp_caching_pg(ap + len, pcontrol, target); |
| 1425 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); |
| 1426 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 1427 | if (0xff == subpcode) { |
| 1428 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, |
| 1429 | target, target_dev_id); |
| 1430 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 1431 | } |
| 1432 | len += resp_iec_m_pg(ap + len, pcontrol, target); |
| 1433 | } else { |
| 1434 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1435 | INVALID_FIELD_IN_CDB, 0); |
| 1436 | return check_condition_result; |
| 1437 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | offset += len; |
| 1439 | break; |
| 1440 | default: |
| 1441 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 1442 | 0); |
| 1443 | return check_condition_result; |
| 1444 | } |
| 1445 | if (msense_6) |
| 1446 | arr[0] = offset - 1; |
| 1447 | else { |
| 1448 | arr[0] = ((offset - 2) >> 8) & 0xff; |
| 1449 | arr[1] = (offset - 2) & 0xff; |
| 1450 | } |
| 1451 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); |
| 1452 | } |
| 1453 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1454 | #define SDEBUG_MAX_MSELECT_SZ 512 |
| 1455 | |
| 1456 | static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, |
| 1457 | struct sdebug_dev_info * devip) |
| 1458 | { |
| 1459 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; |
| 1460 | int param_len, res, errsts, mpage; |
| 1461 | unsigned char arr[SDEBUG_MAX_MSELECT_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 | pf = cmd[1] & 0x10; |
| 1468 | sp = cmd[1] & 0x1; |
| 1469 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); |
| 1470 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { |
| 1471 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1472 | INVALID_FIELD_IN_CDB, 0); |
| 1473 | return check_condition_result; |
| 1474 | } |
| 1475 | res = fetch_to_dev_buffer(scp, arr, param_len); |
| 1476 | if (-1 == res) |
| 1477 | return (DID_ERROR << 16); |
| 1478 | else if ((res < param_len) && |
| 1479 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
| 1480 | printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " |
| 1481 | " IO sent=%d bytes\n", param_len, res); |
| 1482 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); |
| 1483 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1484 | if (md_len > 2) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1485 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1486 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1487 | return check_condition_result; |
| 1488 | } |
| 1489 | off = bd_len + (mselect6 ? 4 : 8); |
| 1490 | mpage = arr[off] & 0x3f; |
| 1491 | ps = !!(arr[off] & 0x80); |
| 1492 | if (ps) { |
| 1493 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1494 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1495 | return check_condition_result; |
| 1496 | } |
| 1497 | spf = !!(arr[off] & 0x40); |
| 1498 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : |
| 1499 | (arr[off + 1] + 2); |
| 1500 | if ((pg_len + off) > param_len) { |
| 1501 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1502 | PARAMETER_LIST_LENGTH_ERR, 0); |
| 1503 | return check_condition_result; |
| 1504 | } |
| 1505 | switch (mpage) { |
| 1506 | case 0xa: /* Control Mode page */ |
| 1507 | if (ctrl_m_pg[1] == arr[off + 1]) { |
| 1508 | memcpy(ctrl_m_pg + 2, arr + off + 2, |
| 1509 | sizeof(ctrl_m_pg) - 2); |
| 1510 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); |
| 1511 | return 0; |
| 1512 | } |
| 1513 | break; |
| 1514 | case 0x1c: /* Informational Exceptions Mode page */ |
| 1515 | if (iec_m_pg[1] == arr[off + 1]) { |
| 1516 | memcpy(iec_m_pg + 2, arr + off + 2, |
| 1517 | sizeof(iec_m_pg) - 2); |
| 1518 | return 0; |
| 1519 | } |
| 1520 | break; |
| 1521 | default: |
| 1522 | break; |
| 1523 | } |
| 1524 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1525 | INVALID_FIELD_IN_PARAM_LIST, 0); |
| 1526 | return check_condition_result; |
| 1527 | } |
| 1528 | |
| 1529 | static int resp_temp_l_pg(unsigned char * arr) |
| 1530 | { |
| 1531 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, |
| 1532 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, |
| 1533 | }; |
| 1534 | |
| 1535 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); |
| 1536 | return sizeof(temp_l_pg); |
| 1537 | } |
| 1538 | |
| 1539 | static int resp_ie_l_pg(unsigned char * arr) |
| 1540 | { |
| 1541 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, |
| 1542 | }; |
| 1543 | |
| 1544 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); |
| 1545 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ |
| 1546 | arr[4] = THRESHOLD_EXCEEDED; |
| 1547 | arr[5] = 0xff; |
| 1548 | } |
| 1549 | return sizeof(ie_l_pg); |
| 1550 | } |
| 1551 | |
| 1552 | #define SDEBUG_MAX_LSENSE_SZ 512 |
| 1553 | |
| 1554 | static int resp_log_sense(struct scsi_cmnd * scp, |
| 1555 | struct sdebug_dev_info * devip) |
| 1556 | { |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1557 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1558 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
| 1559 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 1560 | |
| 1561 | if ((errsts = check_readiness(scp, 1, devip))) |
| 1562 | return errsts; |
| 1563 | memset(arr, 0, sizeof(arr)); |
| 1564 | ppc = cmd[1] & 0x2; |
| 1565 | sp = cmd[1] & 0x1; |
| 1566 | if (ppc || sp) { |
| 1567 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1568 | INVALID_FIELD_IN_CDB, 0); |
| 1569 | return check_condition_result; |
| 1570 | } |
| 1571 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 1572 | pcode = cmd[2] & 0x3f; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1573 | subpcode = cmd[3] & 0xff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1574 | alloc_len = (cmd[7] << 8) + cmd[8]; |
| 1575 | arr[0] = pcode; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1576 | if (0 == subpcode) { |
| 1577 | switch (pcode) { |
| 1578 | case 0x0: /* Supported log pages log page */ |
| 1579 | n = 4; |
| 1580 | arr[n++] = 0x0; /* this page */ |
| 1581 | arr[n++] = 0xd; /* Temperature */ |
| 1582 | arr[n++] = 0x2f; /* Informational exceptions */ |
| 1583 | arr[3] = n - 4; |
| 1584 | break; |
| 1585 | case 0xd: /* Temperature log page */ |
| 1586 | arr[3] = resp_temp_l_pg(arr + 4); |
| 1587 | break; |
| 1588 | case 0x2f: /* Informational exceptions log page */ |
| 1589 | arr[3] = resp_ie_l_pg(arr + 4); |
| 1590 | break; |
| 1591 | default: |
| 1592 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1593 | INVALID_FIELD_IN_CDB, 0); |
| 1594 | return check_condition_result; |
| 1595 | } |
| 1596 | } else if (0xff == subpcode) { |
| 1597 | arr[0] |= 0x40; |
| 1598 | arr[1] = subpcode; |
| 1599 | switch (pcode) { |
| 1600 | case 0x0: /* Supported log pages and subpages log page */ |
| 1601 | n = 4; |
| 1602 | arr[n++] = 0x0; |
| 1603 | arr[n++] = 0x0; /* 0,0 page */ |
| 1604 | arr[n++] = 0x0; |
| 1605 | arr[n++] = 0xff; /* this page */ |
| 1606 | arr[n++] = 0xd; |
| 1607 | arr[n++] = 0x0; /* Temperature */ |
| 1608 | arr[n++] = 0x2f; |
| 1609 | arr[n++] = 0x0; /* Informational exceptions */ |
| 1610 | arr[3] = n - 4; |
| 1611 | break; |
| 1612 | case 0xd: /* Temperature subpages */ |
| 1613 | n = 4; |
| 1614 | arr[n++] = 0xd; |
| 1615 | arr[n++] = 0x0; /* Temperature */ |
| 1616 | arr[3] = n - 4; |
| 1617 | break; |
| 1618 | case 0x2f: /* Informational exceptions subpages */ |
| 1619 | n = 4; |
| 1620 | arr[n++] = 0x2f; |
| 1621 | arr[n++] = 0x0; /* Informational exceptions */ |
| 1622 | arr[3] = n - 4; |
| 1623 | break; |
| 1624 | default: |
| 1625 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1626 | INVALID_FIELD_IN_CDB, 0); |
| 1627 | return check_condition_result; |
| 1628 | } |
| 1629 | } else { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1630 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 1631 | INVALID_FIELD_IN_CDB, 0); |
| 1632 | return check_condition_result; |
| 1633 | } |
| 1634 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
| 1635 | return fill_from_dev_buffer(scp, arr, |
| 1636 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
| 1637 | } |
| 1638 | |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1639 | static int check_device_access_params(struct sdebug_dev_info *devi, |
| 1640 | unsigned long long lba, unsigned int num) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1641 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1642 | if (lba + num > sdebug_capacity) { |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1643 | mk_sense_buffer(devi, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1644 | return check_condition_result; |
| 1645 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1646 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 1647 | if (num > sdebug_store_sectors) { |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1648 | mk_sense_buffer(devi, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1649 | return check_condition_result; |
| 1650 | } |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1651 | return 0; |
| 1652 | } |
| 1653 | |
| 1654 | static int do_device_access(struct scsi_cmnd *scmd, |
| 1655 | struct sdebug_dev_info *devi, |
| 1656 | unsigned long long lba, unsigned int num, int write) |
| 1657 | { |
| 1658 | int ret; |
| 1659 | unsigned int block, rest = 0; |
| 1660 | int (*func)(struct scsi_cmnd *, unsigned char *, int); |
| 1661 | |
| 1662 | func = write ? fetch_to_dev_buffer : fill_from_dev_buffer; |
| 1663 | |
| 1664 | block = do_div(lba, sdebug_store_sectors); |
| 1665 | if (block + num > sdebug_store_sectors) |
| 1666 | rest = block + num - sdebug_store_sectors; |
| 1667 | |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1668 | ret = func(scmd, fake_storep + (block * scsi_debug_sector_size), |
| 1669 | (num - rest) * scsi_debug_sector_size); |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1670 | if (!ret && rest) |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1671 | ret = func(scmd, fake_storep, rest * scsi_debug_sector_size); |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1672 | |
| 1673 | return ret; |
| 1674 | } |
| 1675 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1676 | static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 1677 | unsigned int sectors, u32 ei_lba) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1678 | { |
| 1679 | unsigned int i, resid; |
| 1680 | struct scatterlist *psgl; |
| 1681 | struct sd_dif_tuple *sdt; |
| 1682 | sector_t sector; |
| 1683 | sector_t tmp_sec = start_sec; |
| 1684 | void *paddr; |
| 1685 | |
| 1686 | start_sec = do_div(tmp_sec, sdebug_store_sectors); |
| 1687 | |
| 1688 | sdt = (struct sd_dif_tuple *)(dif_storep + dif_offset(start_sec)); |
| 1689 | |
| 1690 | for (i = 0 ; i < sectors ; i++) { |
| 1691 | u16 csum; |
| 1692 | |
| 1693 | if (sdt[i].app_tag == 0xffff) |
| 1694 | continue; |
| 1695 | |
| 1696 | sector = start_sec + i; |
| 1697 | |
| 1698 | switch (scsi_debug_guard) { |
| 1699 | case 1: |
| 1700 | csum = ip_compute_csum(fake_storep + |
| 1701 | sector * scsi_debug_sector_size, |
| 1702 | scsi_debug_sector_size); |
| 1703 | break; |
| 1704 | case 0: |
| 1705 | csum = crc_t10dif(fake_storep + |
| 1706 | sector * scsi_debug_sector_size, |
| 1707 | scsi_debug_sector_size); |
| 1708 | csum = cpu_to_be16(csum); |
| 1709 | break; |
| 1710 | default: |
| 1711 | BUG(); |
| 1712 | } |
| 1713 | |
| 1714 | if (sdt[i].guard_tag != csum) { |
| 1715 | printk(KERN_ERR "%s: GUARD check failed on sector %lu" \ |
| 1716 | " rcvd 0x%04x, data 0x%04x\n", __func__, |
| 1717 | (unsigned long)sector, |
| 1718 | be16_to_cpu(sdt[i].guard_tag), |
| 1719 | be16_to_cpu(csum)); |
| 1720 | dif_errors++; |
| 1721 | return 0x01; |
| 1722 | } |
| 1723 | |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 1724 | if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION && |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1725 | be32_to_cpu(sdt[i].ref_tag) != (sector & 0xffffffff)) { |
| 1726 | printk(KERN_ERR "%s: REF check failed on sector %lu\n", |
| 1727 | __func__, (unsigned long)sector); |
| 1728 | dif_errors++; |
| 1729 | return 0x03; |
| 1730 | } |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 1731 | |
| 1732 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && |
| 1733 | be32_to_cpu(sdt[i].ref_tag) != ei_lba) { |
| 1734 | printk(KERN_ERR "%s: REF check failed on sector %lu\n", |
| 1735 | __func__, (unsigned long)sector); |
| 1736 | dif_errors++; |
| 1737 | return 0x03; |
| 1738 | } |
| 1739 | |
| 1740 | ei_lba++; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1741 | } |
| 1742 | |
| 1743 | resid = sectors * 8; /* Bytes of protection data to copy into sgl */ |
| 1744 | sector = start_sec; |
| 1745 | |
| 1746 | scsi_for_each_prot_sg(SCpnt, psgl, scsi_prot_sg_count(SCpnt), i) { |
| 1747 | int len = min(psgl->length, resid); |
| 1748 | |
| 1749 | paddr = kmap_atomic(sg_page(psgl), KM_IRQ0) + psgl->offset; |
| 1750 | memcpy(paddr, dif_storep + dif_offset(sector), len); |
| 1751 | |
| 1752 | sector += len >> 3; |
| 1753 | if (sector >= sdebug_store_sectors) { |
| 1754 | /* Force wrap */ |
| 1755 | tmp_sec = sector; |
| 1756 | sector = do_div(tmp_sec, sdebug_store_sectors); |
| 1757 | } |
| 1758 | resid -= len; |
| 1759 | kunmap_atomic(paddr, KM_IRQ0); |
| 1760 | } |
| 1761 | |
| 1762 | dix_reads++; |
| 1763 | |
| 1764 | return 0; |
| 1765 | } |
| 1766 | |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1767 | static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba, |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 1768 | unsigned int num, struct sdebug_dev_info *devip, |
| 1769 | u32 ei_lba) |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1770 | { |
| 1771 | unsigned long iflags; |
| 1772 | int ret; |
| 1773 | |
| 1774 | ret = check_device_access_params(devip, lba, num); |
| 1775 | if (ret) |
| 1776 | return ret; |
| 1777 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1778 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1779 | (lba <= OPT_MEDIUM_ERR_ADDR) && |
| 1780 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { |
| 1781 | /* claim unrecoverable read error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, |
| 1783 | 0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1784 | /* set info field and valid bit for fixed descriptor */ |
| 1785 | if (0x70 == (devip->sense_buff[0] & 0x7f)) { |
| 1786 | devip->sense_buff[0] |= 0x80; /* Valid bit */ |
| 1787 | ret = OPT_MEDIUM_ERR_ADDR; |
| 1788 | devip->sense_buff[3] = (ret >> 24) & 0xff; |
| 1789 | devip->sense_buff[4] = (ret >> 16) & 0xff; |
| 1790 | devip->sense_buff[5] = (ret >> 8) & 0xff; |
| 1791 | devip->sense_buff[6] = ret & 0xff; |
| 1792 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1793 | return check_condition_result; |
| 1794 | } |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1795 | |
| 1796 | /* DIX + T10 DIF */ |
| 1797 | if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 1798 | int prot_ret = prot_verify_read(SCpnt, lba, num, ei_lba); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1799 | |
| 1800 | if (prot_ret) { |
| 1801 | mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, prot_ret); |
| 1802 | return illegal_condition_result; |
| 1803 | } |
| 1804 | } |
| 1805 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1806 | read_lock_irqsave(&atomic_rw, iflags); |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 1807 | ret = do_device_access(SCpnt, devip, lba, num, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | read_unlock_irqrestore(&atomic_rw, iflags); |
| 1809 | return ret; |
| 1810 | } |
| 1811 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1812 | void dump_sector(unsigned char *buf, int len) |
| 1813 | { |
| 1814 | int i, j; |
| 1815 | |
| 1816 | printk(KERN_ERR ">>> Sector Dump <<<\n"); |
| 1817 | |
| 1818 | for (i = 0 ; i < len ; i += 16) { |
| 1819 | printk(KERN_ERR "%04d: ", i); |
| 1820 | |
| 1821 | for (j = 0 ; j < 16 ; j++) { |
| 1822 | unsigned char c = buf[i+j]; |
| 1823 | if (c >= 0x20 && c < 0x7e) |
| 1824 | printk(" %c ", buf[i+j]); |
| 1825 | else |
| 1826 | printk("%02x ", buf[i+j]); |
| 1827 | } |
| 1828 | |
| 1829 | printk("\n"); |
| 1830 | } |
| 1831 | } |
| 1832 | |
| 1833 | static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 1834 | unsigned int sectors, u32 ei_lba) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1835 | { |
| 1836 | int i, j, ret; |
| 1837 | struct sd_dif_tuple *sdt; |
| 1838 | struct scatterlist *dsgl = scsi_sglist(SCpnt); |
| 1839 | struct scatterlist *psgl = scsi_prot_sglist(SCpnt); |
| 1840 | void *daddr, *paddr; |
| 1841 | sector_t tmp_sec = start_sec; |
| 1842 | sector_t sector; |
| 1843 | int ppage_offset; |
| 1844 | unsigned short csum; |
| 1845 | |
| 1846 | sector = do_div(tmp_sec, sdebug_store_sectors); |
| 1847 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1848 | BUG_ON(scsi_sg_count(SCpnt) == 0); |
| 1849 | BUG_ON(scsi_prot_sg_count(SCpnt) == 0); |
| 1850 | |
| 1851 | paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) + psgl->offset; |
| 1852 | ppage_offset = 0; |
| 1853 | |
| 1854 | /* For each data page */ |
| 1855 | scsi_for_each_sg(SCpnt, dsgl, scsi_sg_count(SCpnt), i) { |
| 1856 | daddr = kmap_atomic(sg_page(dsgl), KM_IRQ0) + dsgl->offset; |
| 1857 | |
| 1858 | /* For each sector-sized chunk in data page */ |
| 1859 | for (j = 0 ; j < dsgl->length ; j += scsi_debug_sector_size) { |
| 1860 | |
| 1861 | /* If we're at the end of the current |
| 1862 | * protection page advance to the next one |
| 1863 | */ |
| 1864 | if (ppage_offset >= psgl->length) { |
| 1865 | kunmap_atomic(paddr, KM_IRQ1); |
| 1866 | psgl = sg_next(psgl); |
| 1867 | BUG_ON(psgl == NULL); |
| 1868 | paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) |
| 1869 | + psgl->offset; |
| 1870 | ppage_offset = 0; |
| 1871 | } |
| 1872 | |
| 1873 | sdt = paddr + ppage_offset; |
| 1874 | |
| 1875 | switch (scsi_debug_guard) { |
| 1876 | case 1: |
| 1877 | csum = ip_compute_csum(daddr, |
| 1878 | scsi_debug_sector_size); |
| 1879 | break; |
| 1880 | case 0: |
| 1881 | csum = cpu_to_be16(crc_t10dif(daddr, |
| 1882 | scsi_debug_sector_size)); |
| 1883 | break; |
| 1884 | default: |
| 1885 | BUG(); |
| 1886 | ret = 0; |
| 1887 | goto out; |
| 1888 | } |
| 1889 | |
| 1890 | if (sdt->guard_tag != csum) { |
| 1891 | printk(KERN_ERR |
| 1892 | "%s: GUARD check failed on sector %lu " \ |
| 1893 | "rcvd 0x%04x, calculated 0x%04x\n", |
| 1894 | __func__, (unsigned long)sector, |
| 1895 | be16_to_cpu(sdt->guard_tag), |
| 1896 | be16_to_cpu(csum)); |
| 1897 | ret = 0x01; |
| 1898 | dump_sector(daddr, scsi_debug_sector_size); |
| 1899 | goto out; |
| 1900 | } |
| 1901 | |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 1902 | if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION && |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1903 | be32_to_cpu(sdt->ref_tag) |
| 1904 | != (start_sec & 0xffffffff)) { |
| 1905 | printk(KERN_ERR |
| 1906 | "%s: REF check failed on sector %lu\n", |
| 1907 | __func__, (unsigned long)sector); |
| 1908 | ret = 0x03; |
| 1909 | dump_sector(daddr, scsi_debug_sector_size); |
| 1910 | goto out; |
| 1911 | } |
| 1912 | |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 1913 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && |
| 1914 | be32_to_cpu(sdt->ref_tag) != ei_lba) { |
| 1915 | printk(KERN_ERR |
| 1916 | "%s: REF check failed on sector %lu\n", |
| 1917 | __func__, (unsigned long)sector); |
| 1918 | ret = 0x03; |
| 1919 | dump_sector(daddr, scsi_debug_sector_size); |
| 1920 | goto out; |
| 1921 | } |
| 1922 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1923 | /* Would be great to copy this in bigger |
| 1924 | * chunks. However, for the sake of |
| 1925 | * correctness we need to verify each sector |
| 1926 | * before writing it to "stable" storage |
| 1927 | */ |
| 1928 | memcpy(dif_storep + dif_offset(sector), sdt, 8); |
| 1929 | |
| 1930 | sector++; |
| 1931 | |
| 1932 | if (sector == sdebug_store_sectors) |
| 1933 | sector = 0; /* Force wrap */ |
| 1934 | |
| 1935 | start_sec++; |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 1936 | ei_lba++; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1937 | daddr += scsi_debug_sector_size; |
| 1938 | ppage_offset += sizeof(struct sd_dif_tuple); |
| 1939 | } |
| 1940 | |
| 1941 | kunmap_atomic(daddr, KM_IRQ0); |
| 1942 | } |
| 1943 | |
| 1944 | kunmap_atomic(paddr, KM_IRQ1); |
| 1945 | |
| 1946 | dix_writes++; |
| 1947 | |
| 1948 | return 0; |
| 1949 | |
| 1950 | out: |
| 1951 | dif_errors++; |
| 1952 | kunmap_atomic(daddr, KM_IRQ0); |
| 1953 | kunmap_atomic(paddr, KM_IRQ1); |
| 1954 | return ret; |
| 1955 | } |
| 1956 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1957 | static unsigned int map_state(sector_t lba, unsigned int *num) |
| 1958 | { |
| 1959 | unsigned int granularity, alignment, mapped; |
| 1960 | sector_t block, next, end; |
| 1961 | |
| 1962 | granularity = scsi_debug_unmap_granularity; |
| 1963 | alignment = granularity - scsi_debug_unmap_alignment; |
| 1964 | block = lba + alignment; |
| 1965 | do_div(block, granularity); |
| 1966 | |
| 1967 | mapped = test_bit(block, map_storep); |
| 1968 | |
| 1969 | if (mapped) |
| 1970 | next = find_next_zero_bit(map_storep, map_size, block); |
| 1971 | else |
| 1972 | next = find_next_bit(map_storep, map_size, block); |
| 1973 | |
| 1974 | end = next * granularity - scsi_debug_unmap_alignment; |
| 1975 | *num = end - lba; |
| 1976 | |
| 1977 | return mapped; |
| 1978 | } |
| 1979 | |
| 1980 | static void map_region(sector_t lba, unsigned int len) |
| 1981 | { |
| 1982 | unsigned int granularity, alignment; |
| 1983 | sector_t end = lba + len; |
| 1984 | |
| 1985 | granularity = scsi_debug_unmap_granularity; |
| 1986 | alignment = granularity - scsi_debug_unmap_alignment; |
| 1987 | |
| 1988 | while (lba < end) { |
| 1989 | sector_t block, rem; |
| 1990 | |
| 1991 | block = lba + alignment; |
| 1992 | rem = do_div(block, granularity); |
| 1993 | |
| 1994 | set_bit(block, map_storep); |
| 1995 | |
| 1996 | lba += granularity - rem; |
| 1997 | } |
| 1998 | } |
| 1999 | |
| 2000 | static void unmap_region(sector_t lba, unsigned int len) |
| 2001 | { |
| 2002 | unsigned int granularity, alignment; |
| 2003 | sector_t end = lba + len; |
| 2004 | |
| 2005 | granularity = scsi_debug_unmap_granularity; |
| 2006 | alignment = granularity - scsi_debug_unmap_alignment; |
| 2007 | |
| 2008 | while (lba < end) { |
| 2009 | sector_t block, rem; |
| 2010 | |
| 2011 | block = lba + alignment; |
| 2012 | rem = do_div(block, granularity); |
| 2013 | |
| 2014 | if (rem == 0 && lba + granularity <= end) |
| 2015 | clear_bit(block, map_storep); |
| 2016 | |
| 2017 | lba += granularity - rem; |
| 2018 | } |
| 2019 | } |
| 2020 | |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2021 | static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba, |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 2022 | unsigned int num, struct sdebug_dev_info *devip, |
| 2023 | u32 ei_lba) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2024 | { |
| 2025 | unsigned long iflags; |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2026 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2027 | |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2028 | ret = check_device_access_params(devip, lba, num); |
| 2029 | if (ret) |
| 2030 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2031 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2032 | /* DIX + T10 DIF */ |
| 2033 | if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 2034 | int prot_ret = prot_verify_write(SCpnt, lba, num, ei_lba); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2035 | |
| 2036 | if (prot_ret) { |
| 2037 | mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, prot_ret); |
| 2038 | return illegal_condition_result; |
| 2039 | } |
| 2040 | } |
| 2041 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | write_lock_irqsave(&atomic_rw, iflags); |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2043 | ret = do_device_access(SCpnt, devip, lba, num, 1); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2044 | if (scsi_debug_unmap_granularity) |
| 2045 | map_region(lba, num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2046 | write_unlock_irqrestore(&atomic_rw, iflags); |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2047 | if (-1 == ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2048 | return (DID_ERROR << 16); |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2049 | else if ((ret < (num * scsi_debug_sector_size)) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2050 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2051 | printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2052 | " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2053 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2054 | return 0; |
| 2055 | } |
| 2056 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2057 | static int resp_write_same(struct scsi_cmnd *scmd, unsigned long long lba, |
| 2058 | unsigned int num, struct sdebug_dev_info *devip, |
| 2059 | u32 ei_lba, unsigned int unmap) |
| 2060 | { |
| 2061 | unsigned long iflags; |
| 2062 | unsigned long long i; |
| 2063 | int ret; |
| 2064 | |
| 2065 | ret = check_device_access_params(devip, lba, num); |
| 2066 | if (ret) |
| 2067 | return ret; |
| 2068 | |
| 2069 | write_lock_irqsave(&atomic_rw, iflags); |
| 2070 | |
| 2071 | if (unmap && scsi_debug_unmap_granularity) { |
| 2072 | unmap_region(lba, num); |
| 2073 | goto out; |
| 2074 | } |
| 2075 | |
| 2076 | /* Else fetch one logical block */ |
| 2077 | ret = fetch_to_dev_buffer(scmd, |
| 2078 | fake_storep + (lba * scsi_debug_sector_size), |
| 2079 | scsi_debug_sector_size); |
| 2080 | |
| 2081 | if (-1 == ret) { |
| 2082 | write_unlock_irqrestore(&atomic_rw, iflags); |
| 2083 | return (DID_ERROR << 16); |
| 2084 | } else if ((ret < (num * scsi_debug_sector_size)) && |
| 2085 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
| 2086 | printk(KERN_INFO "scsi_debug: write same: cdb indicated=%u, " |
| 2087 | " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret); |
| 2088 | |
| 2089 | /* Copy first sector to remaining blocks */ |
| 2090 | for (i = 1 ; i < num ; i++) |
| 2091 | memcpy(fake_storep + ((lba + i) * scsi_debug_sector_size), |
| 2092 | fake_storep + (lba * scsi_debug_sector_size), |
| 2093 | scsi_debug_sector_size); |
| 2094 | |
| 2095 | if (scsi_debug_unmap_granularity) |
| 2096 | map_region(lba, num); |
| 2097 | out: |
| 2098 | write_unlock_irqrestore(&atomic_rw, iflags); |
| 2099 | |
| 2100 | return 0; |
| 2101 | } |
| 2102 | |
| 2103 | struct unmap_block_desc { |
| 2104 | __be64 lba; |
| 2105 | __be32 blocks; |
| 2106 | __be32 __reserved; |
| 2107 | }; |
| 2108 | |
| 2109 | static int resp_unmap(struct scsi_cmnd * scmd, struct sdebug_dev_info * devip) |
| 2110 | { |
| 2111 | unsigned char *buf; |
| 2112 | struct unmap_block_desc *desc; |
| 2113 | unsigned int i, payload_len, descriptors; |
| 2114 | int ret; |
| 2115 | |
| 2116 | ret = check_readiness(scmd, 1, devip); |
| 2117 | if (ret) |
| 2118 | return ret; |
| 2119 | |
| 2120 | payload_len = get_unaligned_be16(&scmd->cmnd[7]); |
| 2121 | BUG_ON(scsi_bufflen(scmd) != payload_len); |
| 2122 | |
| 2123 | descriptors = (payload_len - 8) / 16; |
| 2124 | |
| 2125 | buf = kmalloc(scsi_bufflen(scmd), GFP_ATOMIC); |
| 2126 | if (!buf) |
| 2127 | return check_condition_result; |
| 2128 | |
| 2129 | scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd)); |
| 2130 | |
| 2131 | BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2); |
| 2132 | BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16); |
| 2133 | |
| 2134 | desc = (void *)&buf[8]; |
| 2135 | |
| 2136 | for (i = 0 ; i < descriptors ; i++) { |
| 2137 | unsigned long long lba = get_unaligned_be64(&desc[i].lba); |
| 2138 | unsigned int num = get_unaligned_be32(&desc[i].blocks); |
| 2139 | |
| 2140 | ret = check_device_access_params(devip, lba, num); |
| 2141 | if (ret) |
| 2142 | goto out; |
| 2143 | |
| 2144 | unmap_region(lba, num); |
| 2145 | } |
| 2146 | |
| 2147 | ret = 0; |
| 2148 | |
| 2149 | out: |
| 2150 | kfree(buf); |
| 2151 | |
| 2152 | return ret; |
| 2153 | } |
| 2154 | |
| 2155 | #define SDEBUG_GET_LBA_STATUS_LEN 32 |
| 2156 | |
| 2157 | static int resp_get_lba_status(struct scsi_cmnd * scmd, |
| 2158 | struct sdebug_dev_info * devip) |
| 2159 | { |
| 2160 | unsigned long long lba; |
| 2161 | unsigned int alloc_len, mapped, num; |
| 2162 | unsigned char arr[SDEBUG_GET_LBA_STATUS_LEN]; |
| 2163 | int ret; |
| 2164 | |
| 2165 | ret = check_readiness(scmd, 1, devip); |
| 2166 | if (ret) |
| 2167 | return ret; |
| 2168 | |
| 2169 | lba = get_unaligned_be64(&scmd->cmnd[2]); |
| 2170 | alloc_len = get_unaligned_be32(&scmd->cmnd[10]); |
| 2171 | |
| 2172 | if (alloc_len < 24) |
| 2173 | return 0; |
| 2174 | |
| 2175 | ret = check_device_access_params(devip, lba, 1); |
| 2176 | if (ret) |
| 2177 | return ret; |
| 2178 | |
| 2179 | mapped = map_state(lba, &num); |
| 2180 | |
| 2181 | memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN); |
| 2182 | put_unaligned_be32(16, &arr[0]); /* Parameter Data Length */ |
| 2183 | put_unaligned_be64(lba, &arr[8]); /* LBA */ |
| 2184 | put_unaligned_be32(num, &arr[16]); /* Number of blocks */ |
| 2185 | arr[20] = !mapped; /* mapped = 0, unmapped = 1 */ |
| 2186 | |
| 2187 | return fill_from_dev_buffer(scmd, arr, SDEBUG_GET_LBA_STATUS_LEN); |
| 2188 | } |
| 2189 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2190 | #define SDEBUG_RLUN_ARR_SZ 256 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2191 | |
| 2192 | static int resp_report_luns(struct scsi_cmnd * scp, |
| 2193 | struct sdebug_dev_info * devip) |
| 2194 | { |
| 2195 | unsigned int alloc_len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2196 | int lun_cnt, i, upper, num, n, wlun, lun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2197 | unsigned char *cmd = (unsigned char *)scp->cmnd; |
| 2198 | int select_report = (int)cmd[2]; |
| 2199 | struct scsi_lun *one_lun; |
| 2200 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2201 | unsigned char * max_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2202 | |
| 2203 | 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] | 2204 | if ((alloc_len < 4) || (select_report > 2)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2205 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 2206 | 0); |
| 2207 | return check_condition_result; |
| 2208 | } |
| 2209 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ |
| 2210 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); |
| 2211 | lun_cnt = scsi_debug_max_luns; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2212 | if (1 == select_report) |
| 2213 | lun_cnt = 0; |
| 2214 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) |
| 2215 | --lun_cnt; |
| 2216 | wlun = (select_report > 0) ? 1 : 0; |
| 2217 | num = lun_cnt + wlun; |
| 2218 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; |
| 2219 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; |
| 2220 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / |
| 2221 | sizeof(struct scsi_lun)), num); |
| 2222 | if (n < num) { |
| 2223 | wlun = 0; |
| 2224 | lun_cnt = n; |
| 2225 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2226 | one_lun = (struct scsi_lun *) &arr[8]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2227 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
| 2228 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); |
| 2229 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); |
| 2230 | i++, lun++) { |
| 2231 | upper = (lun >> 8) & 0x3f; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2232 | if (upper) |
| 2233 | one_lun[i].scsi_lun[0] = |
| 2234 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2235 | one_lun[i].scsi_lun[1] = lun & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2236 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2237 | if (wlun) { |
| 2238 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; |
| 2239 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; |
| 2240 | i++; |
| 2241 | } |
| 2242 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2243 | return fill_from_dev_buffer(scp, arr, |
| 2244 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); |
| 2245 | } |
| 2246 | |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 2247 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
| 2248 | unsigned int num, struct sdebug_dev_info *devip) |
| 2249 | { |
| 2250 | int i, j, ret = -1; |
| 2251 | unsigned char *kaddr, *buf; |
| 2252 | unsigned int offset; |
| 2253 | struct scatterlist *sg; |
| 2254 | struct scsi_data_buffer *sdb = scsi_in(scp); |
| 2255 | |
| 2256 | /* better not to use temporary buffer. */ |
| 2257 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); |
| 2258 | if (!buf) |
| 2259 | return ret; |
| 2260 | |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 2261 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 2262 | |
| 2263 | offset = 0; |
| 2264 | for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) { |
| 2265 | kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); |
| 2266 | if (!kaddr) |
| 2267 | goto out; |
| 2268 | |
| 2269 | for (j = 0; j < sg->length; j++) |
| 2270 | *(kaddr + sg->offset + j) ^= *(buf + offset + j); |
| 2271 | |
| 2272 | offset += sg->length; |
| 2273 | kunmap_atomic(kaddr, KM_USER0); |
| 2274 | } |
| 2275 | ret = 0; |
| 2276 | out: |
| 2277 | kfree(buf); |
| 2278 | |
| 2279 | return ret; |
| 2280 | } |
| 2281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | /* When timer goes off this function is called. */ |
| 2283 | static void timer_intr_handler(unsigned long indx) |
| 2284 | { |
| 2285 | struct sdebug_queued_cmd * sqcp; |
| 2286 | unsigned long iflags; |
| 2287 | |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 2288 | if (indx >= scsi_debug_max_queue) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2289 | printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " |
| 2290 | "large\n"); |
| 2291 | return; |
| 2292 | } |
| 2293 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 2294 | sqcp = &queued_arr[(int)indx]; |
| 2295 | if (! sqcp->in_use) { |
| 2296 | printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected " |
| 2297 | "interrupt\n"); |
| 2298 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2299 | return; |
| 2300 | } |
| 2301 | sqcp->in_use = 0; |
| 2302 | if (sqcp->done_funct) { |
| 2303 | sqcp->a_cmnd->result = sqcp->scsi_result; |
| 2304 | sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */ |
| 2305 | } |
| 2306 | sqcp->done_funct = NULL; |
| 2307 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2308 | } |
| 2309 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2310 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2311 | static struct sdebug_dev_info * |
| 2312 | sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags) |
FUJITA Tomonori | 5cb2fc0 | 2008-03-20 11:09:16 +0900 | [diff] [blame] | 2313 | { |
| 2314 | struct sdebug_dev_info *devip; |
| 2315 | |
| 2316 | devip = kzalloc(sizeof(*devip), flags); |
| 2317 | if (devip) { |
| 2318 | devip->sdbg_host = sdbg_host; |
| 2319 | list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); |
| 2320 | } |
| 2321 | return devip; |
| 2322 | } |
| 2323 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2324 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
| 2325 | { |
| 2326 | struct sdebug_host_info * sdbg_host; |
| 2327 | struct sdebug_dev_info * open_devip = NULL; |
| 2328 | struct sdebug_dev_info * devip = |
| 2329 | (struct sdebug_dev_info *)sdev->hostdata; |
| 2330 | |
| 2331 | if (devip) |
| 2332 | return devip; |
FUJITA Tomonori | d1e4c9c | 2008-03-02 18:30:18 +0900 | [diff] [blame] | 2333 | sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
| 2334 | if (!sdbg_host) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2335 | printk(KERN_ERR "Host info NULL\n"); |
| 2336 | return NULL; |
| 2337 | } |
| 2338 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { |
| 2339 | if ((devip->used) && (devip->channel == sdev->channel) && |
| 2340 | (devip->target == sdev->id) && |
| 2341 | (devip->lun == sdev->lun)) |
| 2342 | return devip; |
| 2343 | else { |
| 2344 | if ((!devip->used) && (!open_devip)) |
| 2345 | open_devip = devip; |
| 2346 | } |
| 2347 | } |
FUJITA Tomonori | 5cb2fc0 | 2008-03-20 11:09:16 +0900 | [diff] [blame] | 2348 | if (!open_devip) { /* try and make a new one */ |
| 2349 | open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); |
| 2350 | if (!open_devip) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2351 | printk(KERN_ERR "%s: out of memory at line %d\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 2352 | __func__, __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2353 | return NULL; |
| 2354 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2355 | } |
FUJITA Tomonori | a75869d | 2008-03-20 11:09:17 +0900 | [diff] [blame] | 2356 | |
| 2357 | open_devip->channel = sdev->channel; |
| 2358 | open_devip->target = sdev->id; |
| 2359 | open_devip->lun = sdev->lun; |
| 2360 | open_devip->sdbg_host = sdbg_host; |
| 2361 | open_devip->reset = 1; |
| 2362 | open_devip->used = 1; |
| 2363 | memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); |
| 2364 | if (scsi_debug_dsense) |
| 2365 | open_devip->sense_buff[0] = 0x72; |
| 2366 | else { |
| 2367 | open_devip->sense_buff[0] = 0x70; |
| 2368 | open_devip->sense_buff[7] = 0xa; |
| 2369 | } |
| 2370 | if (sdev->lun == SAM2_WLUN_REPORT_LUNS) |
| 2371 | open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; |
| 2372 | |
| 2373 | return open_devip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2374 | } |
| 2375 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2376 | static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2377 | { |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2378 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2379 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", |
| 2380 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
Nick Piggin | 75ad23b | 2008-04-29 14:48:33 +0200 | [diff] [blame] | 2381 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2382 | return 0; |
| 2383 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2384 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2385 | static int scsi_debug_slave_configure(struct scsi_device *sdp) |
| 2386 | { |
| 2387 | struct sdebug_dev_info *devip; |
FUJITA Tomonori | a34c4e9 | 2008-03-25 09:26:50 +0900 | [diff] [blame] | 2388 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2389 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2390 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", |
| 2391 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
| 2392 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) |
| 2393 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; |
| 2394 | devip = devInfoReg(sdp); |
| 2395 | if (NULL == devip) |
| 2396 | return 1; /* no resources, will be marked offline */ |
| 2397 | sdp->hostdata = devip; |
| 2398 | if (sdp->host->cmd_per_lun) |
| 2399 | scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, |
| 2400 | sdp->host->cmd_per_lun); |
| 2401 | blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 2402 | if (scsi_debug_no_uld) |
| 2403 | sdp->no_uld_attach = 1; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2404 | return 0; |
| 2405 | } |
| 2406 | |
| 2407 | static void scsi_debug_slave_destroy(struct scsi_device *sdp) |
| 2408 | { |
| 2409 | struct sdebug_dev_info *devip = |
| 2410 | (struct sdebug_dev_info *)sdp->hostdata; |
| 2411 | |
| 2412 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2413 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", |
| 2414 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
| 2415 | if (devip) { |
| 2416 | /* make this slot avaliable for re-use */ |
| 2417 | devip->used = 0; |
| 2418 | sdp->hostdata = NULL; |
| 2419 | } |
| 2420 | } |
| 2421 | |
| 2422 | /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ |
| 2423 | static int stop_queued_cmnd(struct scsi_cmnd *cmnd) |
| 2424 | { |
| 2425 | unsigned long iflags; |
| 2426 | int k; |
| 2427 | struct sdebug_queued_cmd *sqcp; |
| 2428 | |
| 2429 | spin_lock_irqsave(&queued_arr_lock, iflags); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 2430 | for (k = 0; k < scsi_debug_max_queue; ++k) { |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2431 | sqcp = &queued_arr[k]; |
| 2432 | if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { |
| 2433 | del_timer_sync(&sqcp->cmnd_timer); |
| 2434 | sqcp->in_use = 0; |
| 2435 | sqcp->a_cmnd = NULL; |
| 2436 | break; |
| 2437 | } |
| 2438 | } |
| 2439 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 2440 | return (k < scsi_debug_max_queue) ? 1 : 0; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2441 | } |
| 2442 | |
| 2443 | /* Deletes (stops) timers of all queued commands */ |
| 2444 | static void stop_all_queued(void) |
| 2445 | { |
| 2446 | unsigned long iflags; |
| 2447 | int k; |
| 2448 | struct sdebug_queued_cmd *sqcp; |
| 2449 | |
| 2450 | spin_lock_irqsave(&queued_arr_lock, iflags); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 2451 | for (k = 0; k < scsi_debug_max_queue; ++k) { |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 2452 | sqcp = &queued_arr[k]; |
| 2453 | if (sqcp->in_use && sqcp->a_cmnd) { |
| 2454 | del_timer_sync(&sqcp->cmnd_timer); |
| 2455 | sqcp->in_use = 0; |
| 2456 | sqcp->a_cmnd = NULL; |
| 2457 | } |
| 2458 | } |
| 2459 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2460 | } |
| 2461 | |
| 2462 | static int scsi_debug_abort(struct scsi_cmnd * SCpnt) |
| 2463 | { |
| 2464 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2465 | printk(KERN_INFO "scsi_debug: abort\n"); |
| 2466 | ++num_aborts; |
| 2467 | stop_queued_cmnd(SCpnt); |
| 2468 | return SUCCESS; |
| 2469 | } |
| 2470 | |
| 2471 | static int scsi_debug_biosparam(struct scsi_device *sdev, |
| 2472 | struct block_device * bdev, sector_t capacity, int *info) |
| 2473 | { |
| 2474 | int res; |
| 2475 | unsigned char *buf; |
| 2476 | |
| 2477 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2478 | printk(KERN_INFO "scsi_debug: biosparam\n"); |
| 2479 | buf = scsi_bios_ptable(bdev); |
| 2480 | if (buf) { |
| 2481 | res = scsi_partsize(buf, capacity, |
| 2482 | &info[2], &info[0], &info[1]); |
| 2483 | kfree(buf); |
| 2484 | if (! res) |
| 2485 | return res; |
| 2486 | } |
| 2487 | info[0] = sdebug_heads; |
| 2488 | info[1] = sdebug_sectors_per; |
| 2489 | info[2] = sdebug_cylinders_per; |
| 2490 | return 0; |
| 2491 | } |
| 2492 | |
| 2493 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) |
| 2494 | { |
| 2495 | struct sdebug_dev_info * devip; |
| 2496 | |
| 2497 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2498 | printk(KERN_INFO "scsi_debug: device_reset\n"); |
| 2499 | ++num_dev_resets; |
| 2500 | if (SCpnt) { |
| 2501 | devip = devInfoReg(SCpnt->device); |
| 2502 | if (devip) |
| 2503 | devip->reset = 1; |
| 2504 | } |
| 2505 | return SUCCESS; |
| 2506 | } |
| 2507 | |
| 2508 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) |
| 2509 | { |
| 2510 | struct sdebug_host_info *sdbg_host; |
| 2511 | struct sdebug_dev_info * dev_info; |
| 2512 | struct scsi_device * sdp; |
| 2513 | struct Scsi_Host * hp; |
| 2514 | |
| 2515 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2516 | printk(KERN_INFO "scsi_debug: bus_reset\n"); |
| 2517 | ++num_bus_resets; |
| 2518 | if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { |
FUJITA Tomonori | d1e4c9c | 2008-03-02 18:30:18 +0900 | [diff] [blame] | 2519 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2520 | if (sdbg_host) { |
| 2521 | list_for_each_entry(dev_info, |
| 2522 | &sdbg_host->dev_info_list, |
| 2523 | dev_list) |
| 2524 | dev_info->reset = 1; |
| 2525 | } |
| 2526 | } |
| 2527 | return SUCCESS; |
| 2528 | } |
| 2529 | |
| 2530 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) |
| 2531 | { |
| 2532 | struct sdebug_host_info * sdbg_host; |
| 2533 | struct sdebug_dev_info * dev_info; |
| 2534 | |
| 2535 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 2536 | printk(KERN_INFO "scsi_debug: host_reset\n"); |
| 2537 | ++num_host_resets; |
| 2538 | spin_lock(&sdebug_host_list_lock); |
| 2539 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
| 2540 | list_for_each_entry(dev_info, &sdbg_host->dev_info_list, |
| 2541 | dev_list) |
| 2542 | dev_info->reset = 1; |
| 2543 | } |
| 2544 | spin_unlock(&sdebug_host_list_lock); |
| 2545 | stop_all_queued(); |
| 2546 | return SUCCESS; |
| 2547 | } |
| 2548 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2549 | /* Initializes timers in queued array */ |
| 2550 | static void __init init_all_queued(void) |
| 2551 | { |
| 2552 | unsigned long iflags; |
| 2553 | int k; |
| 2554 | struct sdebug_queued_cmd * sqcp; |
| 2555 | |
| 2556 | spin_lock_irqsave(&queued_arr_lock, iflags); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 2557 | for (k = 0; k < scsi_debug_max_queue; ++k) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2558 | sqcp = &queued_arr[k]; |
| 2559 | init_timer(&sqcp->cmnd_timer); |
| 2560 | sqcp->in_use = 0; |
| 2561 | sqcp->a_cmnd = NULL; |
| 2562 | } |
| 2563 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2564 | } |
| 2565 | |
FUJITA Tomonori | f58b0ef | 2008-03-30 00:59:54 +0900 | [diff] [blame] | 2566 | static void __init sdebug_build_parts(unsigned char *ramp, |
FUJITA Tomonori | 5f2578e | 2008-03-30 00:59:57 +0900 | [diff] [blame] | 2567 | unsigned long store_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2568 | { |
| 2569 | struct partition * pp; |
| 2570 | int starts[SDEBUG_MAX_PARTS + 2]; |
| 2571 | int sectors_per_part, num_sectors, k; |
| 2572 | int heads_by_sects, start_sec, end_sec; |
| 2573 | |
| 2574 | /* assume partition table already zeroed */ |
FUJITA Tomonori | f58b0ef | 2008-03-30 00:59:54 +0900 | [diff] [blame] | 2575 | if ((scsi_debug_num_parts < 1) || (store_size < 1048576)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2576 | return; |
| 2577 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { |
| 2578 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; |
| 2579 | printk(KERN_WARNING "scsi_debug:build_parts: reducing " |
| 2580 | "partitions to %d\n", SDEBUG_MAX_PARTS); |
| 2581 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2582 | num_sectors = (int)sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2583 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
| 2584 | / scsi_debug_num_parts; |
| 2585 | heads_by_sects = sdebug_heads * sdebug_sectors_per; |
| 2586 | starts[0] = sdebug_sectors_per; |
| 2587 | for (k = 1; k < scsi_debug_num_parts; ++k) |
| 2588 | starts[k] = ((k * sectors_per_part) / heads_by_sects) |
| 2589 | * heads_by_sects; |
| 2590 | starts[scsi_debug_num_parts] = num_sectors; |
| 2591 | starts[scsi_debug_num_parts + 1] = 0; |
| 2592 | |
| 2593 | ramp[510] = 0x55; /* magic partition markings */ |
| 2594 | ramp[511] = 0xAA; |
| 2595 | pp = (struct partition *)(ramp + 0x1be); |
| 2596 | for (k = 0; starts[k + 1]; ++k, ++pp) { |
| 2597 | start_sec = starts[k]; |
| 2598 | end_sec = starts[k + 1] - 1; |
| 2599 | pp->boot_ind = 0; |
| 2600 | |
| 2601 | pp->cyl = start_sec / heads_by_sects; |
| 2602 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) |
| 2603 | / sdebug_sectors_per; |
| 2604 | pp->sector = (start_sec % sdebug_sectors_per) + 1; |
| 2605 | |
| 2606 | pp->end_cyl = end_sec / heads_by_sects; |
| 2607 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) |
| 2608 | / sdebug_sectors_per; |
| 2609 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; |
| 2610 | |
| 2611 | pp->start_sect = start_sec; |
| 2612 | pp->nr_sects = end_sec - start_sec + 1; |
| 2613 | pp->sys_ind = 0x83; /* plain Linux partition */ |
| 2614 | } |
| 2615 | } |
| 2616 | |
| 2617 | static int schedule_resp(struct scsi_cmnd * cmnd, |
| 2618 | struct sdebug_dev_info * devip, |
| 2619 | done_funct_t done, int scsi_result, int delta_jiff) |
| 2620 | { |
| 2621 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) { |
| 2622 | if (scsi_result) { |
| 2623 | struct scsi_device * sdp = cmnd->device; |
| 2624 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2625 | printk(KERN_INFO "scsi_debug: <%u %u %u %u> " |
| 2626 | "non-zero result=0x%x\n", sdp->host->host_no, |
| 2627 | sdp->channel, sdp->id, sdp->lun, scsi_result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2628 | } |
| 2629 | } |
| 2630 | if (cmnd && devip) { |
| 2631 | /* simulate autosense by this driver */ |
| 2632 | if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff)) |
| 2633 | memcpy(cmnd->sense_buffer, devip->sense_buff, |
| 2634 | (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ? |
| 2635 | SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE); |
| 2636 | } |
| 2637 | if (delta_jiff <= 0) { |
| 2638 | if (cmnd) |
| 2639 | cmnd->result = scsi_result; |
| 2640 | if (done) |
| 2641 | done(cmnd); |
| 2642 | return 0; |
| 2643 | } else { |
| 2644 | unsigned long iflags; |
| 2645 | int k; |
| 2646 | struct sdebug_queued_cmd * sqcp = NULL; |
| 2647 | |
| 2648 | spin_lock_irqsave(&queued_arr_lock, iflags); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 2649 | for (k = 0; k < scsi_debug_max_queue; ++k) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2650 | sqcp = &queued_arr[k]; |
| 2651 | if (! sqcp->in_use) |
| 2652 | break; |
| 2653 | } |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 2654 | if (k >= scsi_debug_max_queue) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2655 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2656 | printk(KERN_WARNING "scsi_debug: can_queue exceeded\n"); |
| 2657 | return 1; /* report busy to mid level */ |
| 2658 | } |
| 2659 | sqcp->in_use = 1; |
| 2660 | sqcp->a_cmnd = cmnd; |
| 2661 | sqcp->scsi_result = scsi_result; |
| 2662 | sqcp->done_funct = done; |
| 2663 | sqcp->cmnd_timer.function = timer_intr_handler; |
| 2664 | sqcp->cmnd_timer.data = k; |
| 2665 | sqcp->cmnd_timer.expires = jiffies + delta_jiff; |
| 2666 | add_timer(&sqcp->cmnd_timer); |
| 2667 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 2668 | if (cmnd) |
| 2669 | cmnd->result = 0; |
| 2670 | return 0; |
| 2671 | } |
| 2672 | } |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2673 | /* Note: The following macros create attribute files in the |
| 2674 | /sys/module/scsi_debug/parameters directory. Unfortunately this |
| 2675 | driver is unaware of a change and cannot trigger auxiliary actions |
| 2676 | as it can when the corresponding attribute in the |
| 2677 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. |
| 2678 | */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2679 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
| 2680 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); |
| 2681 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); |
| 2682 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); |
| 2683 | 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] | 2684 | 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] | 2685 | module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 2686 | module_param_named(max_queue, scsi_debug_max_queue, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2687 | module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 2688 | module_param_named(no_uld, scsi_debug_no_uld, int, S_IRUGO); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2689 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); |
| 2690 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); |
| 2691 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); |
| 2692 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); |
| 2693 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); |
| 2694 | 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] | 2695 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, |
| 2696 | S_IRUGO | S_IWUSR); |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2697 | 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] | 2698 | module_param_named(dix, scsi_debug_dix, int, S_IRUGO); |
| 2699 | module_param_named(dif, scsi_debug_dif, int, S_IRUGO); |
| 2700 | module_param_named(guard, scsi_debug_guard, int, S_IRUGO); |
| 2701 | module_param_named(ato, scsi_debug_ato, int, S_IRUGO); |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 2702 | module_param_named(physblk_exp, scsi_debug_physblk_exp, int, S_IRUGO); |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 2703 | module_param_named(opt_blks, scsi_debug_opt_blks, int, S_IRUGO); |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 2704 | module_param_named(lowest_aligned, scsi_debug_lowest_aligned, int, S_IRUGO); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2705 | module_param_named(unmap_max_blocks, scsi_debug_unmap_max_blocks, int, S_IRUGO); |
| 2706 | module_param_named(unmap_max_desc, scsi_debug_unmap_max_desc, int, S_IRUGO); |
| 2707 | module_param_named(unmap_granularity, scsi_debug_unmap_granularity, int, S_IRUGO); |
| 2708 | module_param_named(unmap_alignment, scsi_debug_unmap_alignment, int, S_IRUGO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2709 | |
| 2710 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); |
| 2711 | MODULE_DESCRIPTION("SCSI debug adapter driver"); |
| 2712 | MODULE_LICENSE("GPL"); |
| 2713 | MODULE_VERSION(SCSI_DEBUG_VERSION); |
| 2714 | |
| 2715 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); |
| 2716 | MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2717 | MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); |
| 2718 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); |
Randy Dunlap | beb87c3 | 2007-06-11 11:36:40 -0700 | [diff] [blame] | 2719 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2720 | 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] | 2721 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 2722 | MODULE_PARM_DESC(max_queue, "max number of queued commands (1 to 255(def))"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2723 | MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 2724 | MODULE_PARM_DESC(no_uld, "stop ULD (e.g. sd driver) attaching (def=0))"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2725 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2726 | 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] | 2727 | 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] | 2728 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
| 2729 | 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] | 2730 | 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] | 2731 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 2732 | MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)"); |
| 2733 | MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)"); |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 2734 | MODULE_PARM_DESC(opt_blks, "optimal transfer length in block (def=64)"); |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 2735 | MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)"); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2736 | MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); |
| 2737 | MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); |
| 2738 | MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)"); |
| 2739 | MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)"); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2740 | MODULE_PARM_DESC(unmap_max_blocks, "max # of blocks can be unmapped in one cmd (def=0)"); |
| 2741 | MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=0)"); |
| 2742 | MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=0)"); |
| 2743 | MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2744 | |
| 2745 | static char sdebug_info[256]; |
| 2746 | |
| 2747 | static const char * scsi_debug_info(struct Scsi_Host * shp) |
| 2748 | { |
| 2749 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " |
| 2750 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, |
| 2751 | scsi_debug_version_date, scsi_debug_dev_size_mb, |
| 2752 | scsi_debug_opts); |
| 2753 | return sdebug_info; |
| 2754 | } |
| 2755 | |
| 2756 | /* scsi_debug_proc_info |
| 2757 | * Used if the driver currently has no own support for /proc/scsi |
| 2758 | */ |
| 2759 | static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset, |
| 2760 | int length, int inout) |
| 2761 | { |
| 2762 | int len, pos, begin; |
| 2763 | int orig_length; |
| 2764 | |
| 2765 | orig_length = length; |
| 2766 | |
| 2767 | if (inout == 1) { |
| 2768 | char arr[16]; |
| 2769 | int minLen = length > 15 ? 15 : length; |
| 2770 | |
| 2771 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 2772 | return -EACCES; |
| 2773 | memcpy(arr, buffer, minLen); |
| 2774 | arr[minLen] = '\0'; |
| 2775 | if (1 != sscanf(arr, "%d", &pos)) |
| 2776 | return -EINVAL; |
| 2777 | scsi_debug_opts = pos; |
| 2778 | if (scsi_debug_every_nth != 0) |
| 2779 | scsi_debug_cmnd_count = 0; |
| 2780 | return length; |
| 2781 | } |
| 2782 | begin = 0; |
| 2783 | pos = len = sprintf(buffer, "scsi_debug adapter driver, version " |
| 2784 | "%s [%s]\n" |
| 2785 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " |
| 2786 | "every_nth=%d(curr:%d)\n" |
| 2787 | "delay=%d, max_luns=%d, scsi_level=%d\n" |
| 2788 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" |
| 2789 | "number of aborts=%d, device_reset=%d, bus_resets=%d, " |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2790 | "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] | 2791 | SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, |
| 2792 | scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, |
| 2793 | scsi_debug_cmnd_count, scsi_debug_delay, |
| 2794 | scsi_debug_max_luns, scsi_debug_scsi_level, |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2795 | scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads, |
| 2796 | sdebug_sectors_per, num_aborts, num_dev_resets, num_bus_resets, |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2797 | num_host_resets, dix_reads, dix_writes, dif_errors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2798 | if (pos < offset) { |
| 2799 | len = 0; |
| 2800 | begin = pos; |
| 2801 | } |
| 2802 | *start = buffer + (offset - begin); /* Start of wanted data */ |
| 2803 | len -= (offset - begin); |
| 2804 | if (len > length) |
| 2805 | len = length; |
| 2806 | return len; |
| 2807 | } |
| 2808 | |
| 2809 | static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf) |
| 2810 | { |
| 2811 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); |
| 2812 | } |
| 2813 | |
| 2814 | static ssize_t sdebug_delay_store(struct device_driver * ddp, |
| 2815 | const char * buf, size_t count) |
| 2816 | { |
| 2817 | int delay; |
| 2818 | char work[20]; |
| 2819 | |
| 2820 | if (1 == sscanf(buf, "%10s", work)) { |
| 2821 | if ((1 == sscanf(work, "%d", &delay)) && (delay >= 0)) { |
| 2822 | scsi_debug_delay = delay; |
| 2823 | return count; |
| 2824 | } |
| 2825 | } |
| 2826 | return -EINVAL; |
| 2827 | } |
| 2828 | DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show, |
| 2829 | sdebug_delay_store); |
| 2830 | |
| 2831 | static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf) |
| 2832 | { |
| 2833 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); |
| 2834 | } |
| 2835 | |
| 2836 | static ssize_t sdebug_opts_store(struct device_driver * ddp, |
| 2837 | const char * buf, size_t count) |
| 2838 | { |
| 2839 | int opts; |
| 2840 | char work[20]; |
| 2841 | |
| 2842 | if (1 == sscanf(buf, "%10s", work)) { |
| 2843 | if (0 == strnicmp(work,"0x", 2)) { |
| 2844 | if (1 == sscanf(&work[2], "%x", &opts)) |
| 2845 | goto opts_done; |
| 2846 | } else { |
| 2847 | if (1 == sscanf(work, "%d", &opts)) |
| 2848 | goto opts_done; |
| 2849 | } |
| 2850 | } |
| 2851 | return -EINVAL; |
| 2852 | opts_done: |
| 2853 | scsi_debug_opts = opts; |
| 2854 | scsi_debug_cmnd_count = 0; |
| 2855 | return count; |
| 2856 | } |
| 2857 | DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show, |
| 2858 | sdebug_opts_store); |
| 2859 | |
| 2860 | static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf) |
| 2861 | { |
| 2862 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); |
| 2863 | } |
| 2864 | static ssize_t sdebug_ptype_store(struct device_driver * ddp, |
| 2865 | const char * buf, size_t count) |
| 2866 | { |
| 2867 | int n; |
| 2868 | |
| 2869 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2870 | scsi_debug_ptype = n; |
| 2871 | return count; |
| 2872 | } |
| 2873 | return -EINVAL; |
| 2874 | } |
| 2875 | DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store); |
| 2876 | |
| 2877 | static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf) |
| 2878 | { |
| 2879 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); |
| 2880 | } |
| 2881 | static ssize_t sdebug_dsense_store(struct device_driver * ddp, |
| 2882 | const char * buf, size_t count) |
| 2883 | { |
| 2884 | int n; |
| 2885 | |
| 2886 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2887 | scsi_debug_dsense = n; |
| 2888 | return count; |
| 2889 | } |
| 2890 | return -EINVAL; |
| 2891 | } |
| 2892 | DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show, |
| 2893 | sdebug_dsense_store); |
| 2894 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2895 | static ssize_t sdebug_fake_rw_show(struct device_driver * ddp, char * buf) |
| 2896 | { |
| 2897 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); |
| 2898 | } |
| 2899 | static ssize_t sdebug_fake_rw_store(struct device_driver * ddp, |
| 2900 | const char * buf, size_t count) |
| 2901 | { |
| 2902 | int n; |
| 2903 | |
| 2904 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2905 | scsi_debug_fake_rw = n; |
| 2906 | return count; |
| 2907 | } |
| 2908 | return -EINVAL; |
| 2909 | } |
| 2910 | DRIVER_ATTR(fake_rw, S_IRUGO | S_IWUSR, sdebug_fake_rw_show, |
| 2911 | sdebug_fake_rw_store); |
| 2912 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2913 | static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf) |
| 2914 | { |
| 2915 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); |
| 2916 | } |
| 2917 | static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp, |
| 2918 | const char * buf, size_t count) |
| 2919 | { |
| 2920 | int n; |
| 2921 | |
| 2922 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2923 | scsi_debug_no_lun_0 = n; |
| 2924 | return count; |
| 2925 | } |
| 2926 | return -EINVAL; |
| 2927 | } |
| 2928 | DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show, |
| 2929 | sdebug_no_lun_0_store); |
| 2930 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2931 | static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf) |
| 2932 | { |
| 2933 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); |
| 2934 | } |
| 2935 | static ssize_t sdebug_num_tgts_store(struct device_driver * ddp, |
| 2936 | const char * buf, size_t count) |
| 2937 | { |
| 2938 | int n; |
| 2939 | |
| 2940 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2941 | scsi_debug_num_tgts = n; |
| 2942 | sdebug_max_tgts_luns(); |
| 2943 | return count; |
| 2944 | } |
| 2945 | return -EINVAL; |
| 2946 | } |
| 2947 | DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show, |
| 2948 | sdebug_num_tgts_store); |
| 2949 | |
| 2950 | static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf) |
| 2951 | { |
| 2952 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); |
| 2953 | } |
| 2954 | DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL); |
| 2955 | |
| 2956 | static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf) |
| 2957 | { |
| 2958 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); |
| 2959 | } |
| 2960 | DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL); |
| 2961 | |
| 2962 | static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf) |
| 2963 | { |
| 2964 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); |
| 2965 | } |
| 2966 | static ssize_t sdebug_every_nth_store(struct device_driver * ddp, |
| 2967 | const char * buf, size_t count) |
| 2968 | { |
| 2969 | int nth; |
| 2970 | |
| 2971 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { |
| 2972 | scsi_debug_every_nth = nth; |
| 2973 | scsi_debug_cmnd_count = 0; |
| 2974 | return count; |
| 2975 | } |
| 2976 | return -EINVAL; |
| 2977 | } |
| 2978 | DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show, |
| 2979 | sdebug_every_nth_store); |
| 2980 | |
| 2981 | static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf) |
| 2982 | { |
| 2983 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); |
| 2984 | } |
| 2985 | static ssize_t sdebug_max_luns_store(struct device_driver * ddp, |
| 2986 | const char * buf, size_t count) |
| 2987 | { |
| 2988 | int n; |
| 2989 | |
| 2990 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 2991 | scsi_debug_max_luns = n; |
| 2992 | sdebug_max_tgts_luns(); |
| 2993 | return count; |
| 2994 | } |
| 2995 | return -EINVAL; |
| 2996 | } |
| 2997 | DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, |
| 2998 | sdebug_max_luns_store); |
| 2999 | |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 3000 | static ssize_t sdebug_max_queue_show(struct device_driver * ddp, char * buf) |
| 3001 | { |
| 3002 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_queue); |
| 3003 | } |
| 3004 | static ssize_t sdebug_max_queue_store(struct device_driver * ddp, |
| 3005 | const char * buf, size_t count) |
| 3006 | { |
| 3007 | int n; |
| 3008 | |
| 3009 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n > 0) && |
| 3010 | (n <= SCSI_DEBUG_CANQUEUE)) { |
| 3011 | scsi_debug_max_queue = n; |
| 3012 | return count; |
| 3013 | } |
| 3014 | return -EINVAL; |
| 3015 | } |
| 3016 | DRIVER_ATTR(max_queue, S_IRUGO | S_IWUSR, sdebug_max_queue_show, |
| 3017 | sdebug_max_queue_store); |
| 3018 | |
| 3019 | static ssize_t sdebug_no_uld_show(struct device_driver * ddp, char * buf) |
| 3020 | { |
| 3021 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_uld); |
| 3022 | } |
| 3023 | DRIVER_ATTR(no_uld, S_IRUGO, sdebug_no_uld_show, NULL); |
| 3024 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3025 | static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf) |
| 3026 | { |
| 3027 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); |
| 3028 | } |
| 3029 | DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL); |
| 3030 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3031 | static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf) |
| 3032 | { |
| 3033 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); |
| 3034 | } |
| 3035 | static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp, |
| 3036 | const char * buf, size_t count) |
| 3037 | { |
| 3038 | int n; |
| 3039 | |
| 3040 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 3041 | scsi_debug_virtual_gb = n; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 3042 | |
| 3043 | sdebug_capacity = get_sdebug_capacity(); |
| 3044 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3045 | return count; |
| 3046 | } |
| 3047 | return -EINVAL; |
| 3048 | } |
| 3049 | DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show, |
| 3050 | sdebug_virtual_gb_store); |
| 3051 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3052 | static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf) |
| 3053 | { |
| 3054 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); |
| 3055 | } |
| 3056 | |
| 3057 | static ssize_t sdebug_add_host_store(struct device_driver * ddp, |
| 3058 | const char * buf, size_t count) |
| 3059 | { |
FUJITA Tomonori | f3df41c | 2008-03-20 11:09:15 +0900 | [diff] [blame] | 3060 | int delta_hosts; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3061 | |
FUJITA Tomonori | f3df41c | 2008-03-20 11:09:15 +0900 | [diff] [blame] | 3062 | if (sscanf(buf, "%d", &delta_hosts) != 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3063 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3064 | if (delta_hosts > 0) { |
| 3065 | do { |
| 3066 | sdebug_add_adapter(); |
| 3067 | } while (--delta_hosts); |
| 3068 | } else if (delta_hosts < 0) { |
| 3069 | do { |
| 3070 | sdebug_remove_adapter(); |
| 3071 | } while (++delta_hosts); |
| 3072 | } |
| 3073 | return count; |
| 3074 | } |
FUJITA Tomonori | f3df41c | 2008-03-20 11:09:15 +0900 | [diff] [blame] | 3075 | DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3076 | sdebug_add_host_store); |
| 3077 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 3078 | static ssize_t sdebug_vpd_use_hostno_show(struct device_driver * ddp, |
| 3079 | char * buf) |
| 3080 | { |
| 3081 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); |
| 3082 | } |
| 3083 | static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp, |
| 3084 | const char * buf, size_t count) |
| 3085 | { |
| 3086 | int n; |
| 3087 | |
| 3088 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 3089 | scsi_debug_vpd_use_hostno = n; |
| 3090 | return count; |
| 3091 | } |
| 3092 | return -EINVAL; |
| 3093 | } |
| 3094 | DRIVER_ATTR(vpd_use_hostno, S_IRUGO | S_IWUSR, sdebug_vpd_use_hostno_show, |
| 3095 | sdebug_vpd_use_hostno_store); |
| 3096 | |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 3097 | static ssize_t sdebug_sector_size_show(struct device_driver * ddp, char * buf) |
| 3098 | { |
| 3099 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_sector_size); |
| 3100 | } |
| 3101 | DRIVER_ATTR(sector_size, S_IRUGO, sdebug_sector_size_show, NULL); |
| 3102 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3103 | static ssize_t sdebug_dix_show(struct device_driver *ddp, char *buf) |
| 3104 | { |
| 3105 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dix); |
| 3106 | } |
| 3107 | DRIVER_ATTR(dix, S_IRUGO, sdebug_dix_show, NULL); |
| 3108 | |
| 3109 | static ssize_t sdebug_dif_show(struct device_driver *ddp, char *buf) |
| 3110 | { |
| 3111 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dif); |
| 3112 | } |
| 3113 | DRIVER_ATTR(dif, S_IRUGO, sdebug_dif_show, NULL); |
| 3114 | |
| 3115 | static ssize_t sdebug_guard_show(struct device_driver *ddp, char *buf) |
| 3116 | { |
| 3117 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_guard); |
| 3118 | } |
| 3119 | DRIVER_ATTR(guard, S_IRUGO, sdebug_guard_show, NULL); |
| 3120 | |
| 3121 | static ssize_t sdebug_ato_show(struct device_driver *ddp, char *buf) |
| 3122 | { |
| 3123 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ato); |
| 3124 | } |
| 3125 | DRIVER_ATTR(ato, S_IRUGO, sdebug_ato_show, NULL); |
| 3126 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3127 | static ssize_t sdebug_map_show(struct device_driver *ddp, char *buf) |
| 3128 | { |
| 3129 | ssize_t count; |
| 3130 | |
| 3131 | if (scsi_debug_unmap_granularity == 0) |
| 3132 | return scnprintf(buf, PAGE_SIZE, "0-%u\n", |
| 3133 | sdebug_store_sectors); |
| 3134 | |
| 3135 | count = bitmap_scnlistprintf(buf, PAGE_SIZE, map_storep, map_size); |
| 3136 | |
| 3137 | buf[count++] = '\n'; |
| 3138 | buf[count++] = 0; |
| 3139 | |
| 3140 | return count; |
| 3141 | } |
| 3142 | DRIVER_ATTR(map, S_IRUGO, sdebug_map_show, NULL); |
| 3143 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3144 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 3145 | /* Note: The following function creates attribute files in the |
| 3146 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these |
| 3147 | files (over those found in the /sys/module/scsi_debug/parameters |
| 3148 | directory) is that auxiliary actions can be triggered when an attribute |
| 3149 | is changed. For example see: sdebug_add_host_store() above. |
| 3150 | */ |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 3151 | static int do_create_driverfs_files(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3152 | { |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 3153 | int ret; |
| 3154 | |
| 3155 | ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host); |
| 3156 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay); |
| 3157 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); |
| 3158 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense); |
| 3159 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 3160 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 3161 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 3162 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_queue); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 3163 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 3164 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_uld); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 3165 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 3166 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 3167 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
| 3168 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts); |
| 3169 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 3170 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); |
| 3171 | 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] | 3172 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_sector_size); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3173 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dix); |
| 3174 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dif); |
| 3175 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_guard); |
| 3176 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ato); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3177 | ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_map); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 3178 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3179 | } |
| 3180 | |
| 3181 | static void do_remove_driverfs_files(void) |
| 3182 | { |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3183 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_map); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3184 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ato); |
| 3185 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_guard); |
| 3186 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dif); |
| 3187 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dix); |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 3188 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_sector_size); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 3189 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); |
| 3190 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3191 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); |
| 3192 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts); |
| 3193 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3194 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 3195 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 3196 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_uld); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 3197 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 3198 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_queue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3199 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 3200 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3201 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth); |
| 3202 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense); |
| 3203 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); |
| 3204 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay); |
| 3205 | driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); |
| 3206 | } |
| 3207 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3208 | static void pseudo_0_release(struct device *dev) |
| 3209 | { |
| 3210 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 3211 | printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n"); |
| 3212 | } |
| 3213 | |
| 3214 | static struct device pseudo_primary = { |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 3215 | .init_name = "pseudo_0", |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3216 | .release = pseudo_0_release, |
| 3217 | }; |
| 3218 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3219 | static int __init scsi_debug_init(void) |
| 3220 | { |
FUJITA Tomonori | 5f2578e | 2008-03-30 00:59:57 +0900 | [diff] [blame] | 3221 | unsigned long sz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3222 | int host_to_add; |
| 3223 | int k; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 3224 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3225 | |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 3226 | switch (scsi_debug_sector_size) { |
| 3227 | case 512: |
| 3228 | case 1024: |
| 3229 | case 2048: |
| 3230 | case 4096: |
| 3231 | break; |
| 3232 | default: |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3233 | printk(KERN_ERR "scsi_debug_init: invalid sector_size %d\n", |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 3234 | scsi_debug_sector_size); |
| 3235 | return -EINVAL; |
| 3236 | } |
| 3237 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3238 | switch (scsi_debug_dif) { |
| 3239 | |
| 3240 | case SD_DIF_TYPE0_PROTECTION: |
| 3241 | case SD_DIF_TYPE1_PROTECTION: |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 3242 | case SD_DIF_TYPE2_PROTECTION: |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3243 | case SD_DIF_TYPE3_PROTECTION: |
| 3244 | break; |
| 3245 | |
| 3246 | default: |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 3247 | printk(KERN_ERR "scsi_debug_init: dif must be 0, 1, 2 or 3\n"); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3248 | return -EINVAL; |
| 3249 | } |
| 3250 | |
| 3251 | if (scsi_debug_guard > 1) { |
| 3252 | printk(KERN_ERR "scsi_debug_init: guard must be 0 or 1\n"); |
| 3253 | return -EINVAL; |
| 3254 | } |
| 3255 | |
| 3256 | if (scsi_debug_ato > 1) { |
| 3257 | printk(KERN_ERR "scsi_debug_init: ato must be 0 or 1\n"); |
| 3258 | return -EINVAL; |
| 3259 | } |
| 3260 | |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 3261 | if (scsi_debug_physblk_exp > 15) { |
| 3262 | printk(KERN_ERR "scsi_debug_init: invalid physblk_exp %u\n", |
| 3263 | scsi_debug_physblk_exp); |
| 3264 | return -EINVAL; |
| 3265 | } |
| 3266 | |
| 3267 | if (scsi_debug_lowest_aligned > 0x3fff) { |
| 3268 | printk(KERN_ERR "scsi_debug_init: lowest_aligned too big: %u\n", |
| 3269 | scsi_debug_lowest_aligned); |
| 3270 | return -EINVAL; |
| 3271 | } |
| 3272 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3273 | if (scsi_debug_dev_size_mb < 1) |
| 3274 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ |
FUJITA Tomonori | 5f2578e | 2008-03-30 00:59:57 +0900 | [diff] [blame] | 3275 | sz = (unsigned long)scsi_debug_dev_size_mb * 1048576; |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 3276 | sdebug_store_sectors = sz / scsi_debug_sector_size; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 3277 | sdebug_capacity = get_sdebug_capacity(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3278 | |
| 3279 | /* play around with geometry, don't waste too much on track 0 */ |
| 3280 | sdebug_heads = 8; |
| 3281 | sdebug_sectors_per = 32; |
| 3282 | if (scsi_debug_dev_size_mb >= 16) |
| 3283 | sdebug_heads = 32; |
| 3284 | else if (scsi_debug_dev_size_mb >= 256) |
| 3285 | sdebug_heads = 64; |
| 3286 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 3287 | (sdebug_sectors_per * sdebug_heads); |
| 3288 | if (sdebug_cylinders_per >= 1024) { |
| 3289 | /* other LLDs do this; implies >= 1GB ram disk ... */ |
| 3290 | sdebug_heads = 255; |
| 3291 | sdebug_sectors_per = 63; |
| 3292 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 3293 | (sdebug_sectors_per * sdebug_heads); |
| 3294 | } |
| 3295 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3296 | fake_storep = vmalloc(sz); |
| 3297 | if (NULL == fake_storep) { |
| 3298 | printk(KERN_ERR "scsi_debug_init: out of memory, 1\n"); |
| 3299 | return -ENOMEM; |
| 3300 | } |
| 3301 | memset(fake_storep, 0, sz); |
| 3302 | if (scsi_debug_num_parts > 0) |
FUJITA Tomonori | f58b0ef | 2008-03-30 00:59:54 +0900 | [diff] [blame] | 3303 | sdebug_build_parts(fake_storep, sz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3304 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3305 | if (scsi_debug_dif) { |
| 3306 | int dif_size; |
| 3307 | |
| 3308 | dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple); |
| 3309 | dif_storep = vmalloc(dif_size); |
| 3310 | |
| 3311 | printk(KERN_ERR "scsi_debug_init: dif_storep %u bytes @ %p\n", |
| 3312 | dif_size, dif_storep); |
| 3313 | |
| 3314 | if (dif_storep == NULL) { |
| 3315 | printk(KERN_ERR "scsi_debug_init: out of mem. (DIX)\n"); |
| 3316 | ret = -ENOMEM; |
| 3317 | goto free_vm; |
| 3318 | } |
| 3319 | |
| 3320 | memset(dif_storep, 0xff, dif_size); |
| 3321 | } |
| 3322 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3323 | if (scsi_debug_unmap_granularity) { |
| 3324 | unsigned int map_bytes; |
| 3325 | |
| 3326 | if (scsi_debug_unmap_granularity < scsi_debug_unmap_alignment) { |
| 3327 | printk(KERN_ERR |
| 3328 | "%s: ERR: unmap_granularity < unmap_alignment\n", |
| 3329 | __func__); |
| 3330 | return -EINVAL; |
| 3331 | } |
| 3332 | |
| 3333 | map_size = (sdebug_store_sectors / scsi_debug_unmap_granularity); |
| 3334 | map_bytes = map_size >> 3; |
| 3335 | map_storep = vmalloc(map_bytes); |
| 3336 | |
| 3337 | printk(KERN_INFO "scsi_debug_init: %lu provisioning blocks\n", |
| 3338 | map_size); |
| 3339 | |
| 3340 | if (map_storep == NULL) { |
| 3341 | printk(KERN_ERR "scsi_debug_init: out of mem. (MAP)\n"); |
| 3342 | ret = -ENOMEM; |
| 3343 | goto free_vm; |
| 3344 | } |
| 3345 | |
| 3346 | memset(map_storep, 0x0, map_bytes); |
| 3347 | |
| 3348 | /* Map first 1KB for partition table */ |
| 3349 | if (scsi_debug_num_parts) |
| 3350 | map_region(0, 2); |
| 3351 | } |
| 3352 | |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 3353 | ret = device_register(&pseudo_primary); |
| 3354 | if (ret < 0) { |
| 3355 | printk(KERN_WARNING "scsi_debug: device_register error: %d\n", |
| 3356 | ret); |
| 3357 | goto free_vm; |
| 3358 | } |
| 3359 | ret = bus_register(&pseudo_lld_bus); |
| 3360 | if (ret < 0) { |
| 3361 | printk(KERN_WARNING "scsi_debug: bus_register error: %d\n", |
| 3362 | ret); |
| 3363 | goto dev_unreg; |
| 3364 | } |
| 3365 | ret = driver_register(&sdebug_driverfs_driver); |
| 3366 | if (ret < 0) { |
| 3367 | printk(KERN_WARNING "scsi_debug: driver_register error: %d\n", |
| 3368 | ret); |
| 3369 | goto bus_unreg; |
| 3370 | } |
| 3371 | ret = do_create_driverfs_files(); |
| 3372 | if (ret < 0) { |
| 3373 | printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n", |
| 3374 | ret); |
| 3375 | goto del_files; |
| 3376 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3377 | |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 3378 | init_all_queued(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3379 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3380 | host_to_add = scsi_debug_add_host; |
| 3381 | scsi_debug_add_host = 0; |
| 3382 | |
| 3383 | for (k = 0; k < host_to_add; k++) { |
| 3384 | if (sdebug_add_adapter()) { |
| 3385 | printk(KERN_ERR "scsi_debug_init: " |
| 3386 | "sdebug_add_adapter failed k=%d\n", k); |
| 3387 | break; |
| 3388 | } |
| 3389 | } |
| 3390 | |
| 3391 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { |
| 3392 | printk(KERN_INFO "scsi_debug_init: built %d host(s)\n", |
| 3393 | scsi_debug_add_host); |
| 3394 | } |
| 3395 | return 0; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 3396 | |
| 3397 | del_files: |
| 3398 | do_remove_driverfs_files(); |
| 3399 | driver_unregister(&sdebug_driverfs_driver); |
| 3400 | bus_unreg: |
| 3401 | bus_unregister(&pseudo_lld_bus); |
| 3402 | dev_unreg: |
| 3403 | device_unregister(&pseudo_primary); |
| 3404 | free_vm: |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3405 | if (map_storep) |
| 3406 | vfree(map_storep); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3407 | if (dif_storep) |
| 3408 | vfree(dif_storep); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 3409 | vfree(fake_storep); |
| 3410 | |
| 3411 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3412 | } |
| 3413 | |
| 3414 | static void __exit scsi_debug_exit(void) |
| 3415 | { |
| 3416 | int k = scsi_debug_add_host; |
| 3417 | |
| 3418 | stop_all_queued(); |
| 3419 | for (; k; k--) |
| 3420 | sdebug_remove_adapter(); |
| 3421 | do_remove_driverfs_files(); |
| 3422 | driver_unregister(&sdebug_driverfs_driver); |
| 3423 | bus_unregister(&pseudo_lld_bus); |
| 3424 | device_unregister(&pseudo_primary); |
| 3425 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3426 | if (dif_storep) |
| 3427 | vfree(dif_storep); |
| 3428 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3429 | vfree(fake_storep); |
| 3430 | } |
| 3431 | |
| 3432 | device_initcall(scsi_debug_init); |
| 3433 | module_exit(scsi_debug_exit); |
| 3434 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3435 | static void sdebug_release_adapter(struct device * dev) |
| 3436 | { |
| 3437 | struct sdebug_host_info *sdbg_host; |
| 3438 | |
| 3439 | sdbg_host = to_sdebug_host(dev); |
| 3440 | kfree(sdbg_host); |
| 3441 | } |
| 3442 | |
| 3443 | static int sdebug_add_adapter(void) |
| 3444 | { |
| 3445 | int k, devs_per_host; |
| 3446 | int error = 0; |
| 3447 | struct sdebug_host_info *sdbg_host; |
FUJITA Tomonori | 8b40228 | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 3448 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3449 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3450 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3451 | if (NULL == sdbg_host) { |
| 3452 | printk(KERN_ERR "%s: out of memory at line %d\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 3453 | __func__, __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3454 | return -ENOMEM; |
| 3455 | } |
| 3456 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3457 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
| 3458 | |
| 3459 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; |
| 3460 | for (k = 0; k < devs_per_host; k++) { |
FUJITA Tomonori | 5cb2fc0 | 2008-03-20 11:09:16 +0900 | [diff] [blame] | 3461 | sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); |
| 3462 | if (!sdbg_devinfo) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3463 | printk(KERN_ERR "%s: out of memory at line %d\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 3464 | __func__, __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3465 | error = -ENOMEM; |
| 3466 | goto clean; |
| 3467 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3468 | } |
| 3469 | |
| 3470 | spin_lock(&sdebug_host_list_lock); |
| 3471 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); |
| 3472 | spin_unlock(&sdebug_host_list_lock); |
| 3473 | |
| 3474 | sdbg_host->dev.bus = &pseudo_lld_bus; |
| 3475 | sdbg_host->dev.parent = &pseudo_primary; |
| 3476 | sdbg_host->dev.release = &sdebug_release_adapter; |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 3477 | dev_set_name(&sdbg_host->dev, "adapter%d", scsi_debug_add_host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3478 | |
| 3479 | error = device_register(&sdbg_host->dev); |
| 3480 | |
| 3481 | if (error) |
| 3482 | goto clean; |
| 3483 | |
| 3484 | ++scsi_debug_add_host; |
| 3485 | return error; |
| 3486 | |
| 3487 | clean: |
FUJITA Tomonori | 8b40228 | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 3488 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
| 3489 | dev_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3490 | list_del(&sdbg_devinfo->dev_list); |
| 3491 | kfree(sdbg_devinfo); |
| 3492 | } |
| 3493 | |
| 3494 | kfree(sdbg_host); |
| 3495 | return error; |
| 3496 | } |
| 3497 | |
| 3498 | static void sdebug_remove_adapter(void) |
| 3499 | { |
| 3500 | struct sdebug_host_info * sdbg_host = NULL; |
| 3501 | |
| 3502 | spin_lock(&sdebug_host_list_lock); |
| 3503 | if (!list_empty(&sdebug_host_list)) { |
| 3504 | sdbg_host = list_entry(sdebug_host_list.prev, |
| 3505 | struct sdebug_host_info, host_list); |
| 3506 | list_del(&sdbg_host->host_list); |
| 3507 | } |
| 3508 | spin_unlock(&sdebug_host_list_lock); |
| 3509 | |
| 3510 | if (!sdbg_host) |
| 3511 | return; |
| 3512 | |
| 3513 | device_unregister(&sdbg_host->dev); |
| 3514 | --scsi_debug_add_host; |
| 3515 | } |
| 3516 | |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3517 | static |
| 3518 | int scsi_debug_queuecommand(struct scsi_cmnd *SCpnt, done_funct_t done) |
| 3519 | { |
| 3520 | unsigned char *cmd = (unsigned char *) SCpnt->cmnd; |
| 3521 | int len, k; |
| 3522 | unsigned int num; |
| 3523 | unsigned long long lba; |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 3524 | u32 ei_lba; |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3525 | int errsts = 0; |
| 3526 | int target = SCpnt->device->id; |
| 3527 | struct sdebug_dev_info *devip = NULL; |
| 3528 | int inj_recovered = 0; |
| 3529 | int inj_transport = 0; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3530 | int inj_dif = 0; |
| 3531 | int inj_dix = 0; |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3532 | int delay_override = 0; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3533 | int unmap = 0; |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3534 | |
| 3535 | scsi_set_resid(SCpnt, 0); |
| 3536 | if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { |
| 3537 | printk(KERN_INFO "scsi_debug: cmd "); |
| 3538 | for (k = 0, len = SCpnt->cmd_len; k < len; ++k) |
| 3539 | printk("%02x ", (int)cmd[k]); |
| 3540 | printk("\n"); |
| 3541 | } |
| 3542 | |
| 3543 | if (target == SCpnt->device->host->hostt->this_id) { |
| 3544 | printk(KERN_INFO "scsi_debug: initiator's id used as " |
| 3545 | "target!\n"); |
| 3546 | return schedule_resp(SCpnt, NULL, done, |
| 3547 | DID_NO_CONNECT << 16, 0); |
| 3548 | } |
| 3549 | |
| 3550 | if ((SCpnt->device->lun >= scsi_debug_max_luns) && |
| 3551 | (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) |
| 3552 | return schedule_resp(SCpnt, NULL, done, |
| 3553 | DID_NO_CONNECT << 16, 0); |
| 3554 | devip = devInfoReg(SCpnt->device); |
| 3555 | if (NULL == devip) |
| 3556 | return schedule_resp(SCpnt, NULL, done, |
| 3557 | DID_NO_CONNECT << 16, 0); |
| 3558 | |
| 3559 | if ((scsi_debug_every_nth != 0) && |
| 3560 | (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { |
| 3561 | scsi_debug_cmnd_count = 0; |
| 3562 | if (scsi_debug_every_nth < -1) |
| 3563 | scsi_debug_every_nth = -1; |
| 3564 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) |
| 3565 | return 0; /* ignore command causing timeout */ |
| 3566 | else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) |
| 3567 | inj_recovered = 1; /* to reads and writes below */ |
| 3568 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts) |
| 3569 | inj_transport = 1; /* to reads and writes below */ |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3570 | else if (SCSI_DEBUG_OPT_DIF_ERR & scsi_debug_opts) |
| 3571 | inj_dif = 1; /* to reads and writes below */ |
| 3572 | else if (SCSI_DEBUG_OPT_DIX_ERR & scsi_debug_opts) |
| 3573 | inj_dix = 1; /* to reads and writes below */ |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3574 | } |
| 3575 | |
| 3576 | if (devip->wlun) { |
| 3577 | switch (*cmd) { |
| 3578 | case INQUIRY: |
| 3579 | case REQUEST_SENSE: |
| 3580 | case TEST_UNIT_READY: |
| 3581 | case REPORT_LUNS: |
| 3582 | break; /* only allowable wlun commands */ |
| 3583 | default: |
| 3584 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 3585 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x " |
| 3586 | "not supported for wlun\n", *cmd); |
| 3587 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 3588 | INVALID_OPCODE, 0); |
| 3589 | errsts = check_condition_result; |
| 3590 | return schedule_resp(SCpnt, devip, done, errsts, |
| 3591 | 0); |
| 3592 | } |
| 3593 | } |
| 3594 | |
| 3595 | switch (*cmd) { |
| 3596 | case INQUIRY: /* mandatory, ignore unit attention */ |
| 3597 | delay_override = 1; |
| 3598 | errsts = resp_inquiry(SCpnt, target, devip); |
| 3599 | break; |
| 3600 | case REQUEST_SENSE: /* mandatory, ignore unit attention */ |
| 3601 | delay_override = 1; |
| 3602 | errsts = resp_requests(SCpnt, devip); |
| 3603 | break; |
| 3604 | case REZERO_UNIT: /* actually this is REWIND for SSC */ |
| 3605 | case START_STOP: |
| 3606 | errsts = resp_start_stop(SCpnt, devip); |
| 3607 | break; |
| 3608 | case ALLOW_MEDIUM_REMOVAL: |
| 3609 | errsts = check_readiness(SCpnt, 1, devip); |
| 3610 | if (errsts) |
| 3611 | break; |
| 3612 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 3613 | printk(KERN_INFO "scsi_debug: Medium removal %s\n", |
| 3614 | cmd[4] ? "inhibited" : "enabled"); |
| 3615 | break; |
| 3616 | case SEND_DIAGNOSTIC: /* mandatory */ |
| 3617 | errsts = check_readiness(SCpnt, 1, devip); |
| 3618 | break; |
| 3619 | case TEST_UNIT_READY: /* mandatory */ |
| 3620 | delay_override = 1; |
| 3621 | errsts = check_readiness(SCpnt, 0, devip); |
| 3622 | break; |
| 3623 | case RESERVE: |
| 3624 | errsts = check_readiness(SCpnt, 1, devip); |
| 3625 | break; |
| 3626 | case RESERVE_10: |
| 3627 | errsts = check_readiness(SCpnt, 1, devip); |
| 3628 | break; |
| 3629 | case RELEASE: |
| 3630 | errsts = check_readiness(SCpnt, 1, devip); |
| 3631 | break; |
| 3632 | case RELEASE_10: |
| 3633 | errsts = check_readiness(SCpnt, 1, devip); |
| 3634 | break; |
| 3635 | case READ_CAPACITY: |
| 3636 | errsts = resp_readcap(SCpnt, devip); |
| 3637 | break; |
| 3638 | case SERVICE_ACTION_IN: |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3639 | if (cmd[1] == SAI_READ_CAPACITY_16) |
| 3640 | errsts = resp_readcap16(SCpnt, devip); |
| 3641 | else if (cmd[1] == SAI_GET_LBA_STATUS) { |
| 3642 | |
| 3643 | if (scsi_debug_unmap_max_desc == 0) { |
| 3644 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 3645 | INVALID_COMMAND_OPCODE, 0); |
| 3646 | errsts = check_condition_result; |
| 3647 | } else |
| 3648 | errsts = resp_get_lba_status(SCpnt, devip); |
| 3649 | } else { |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3650 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 3651 | INVALID_OPCODE, 0); |
| 3652 | errsts = check_condition_result; |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3653 | } |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3654 | break; |
| 3655 | case MAINTENANCE_IN: |
| 3656 | if (MI_REPORT_TARGET_PGS != cmd[1]) { |
| 3657 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 3658 | INVALID_OPCODE, 0); |
| 3659 | errsts = check_condition_result; |
| 3660 | break; |
| 3661 | } |
| 3662 | errsts = resp_report_tgtpgs(SCpnt, devip); |
| 3663 | break; |
| 3664 | case READ_16: |
| 3665 | case READ_12: |
| 3666 | case READ_10: |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 3667 | /* READ{10,12,16} and DIF Type 2 are natural enemies */ |
| 3668 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && |
| 3669 | cmd[1] & 0xe0) { |
| 3670 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 3671 | INVALID_COMMAND_OPCODE, 0); |
| 3672 | errsts = check_condition_result; |
| 3673 | break; |
| 3674 | } |
| 3675 | |
| 3676 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || |
| 3677 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && |
| 3678 | (cmd[1] & 0xe0) == 0) |
| 3679 | printk(KERN_ERR "Unprotected RD/WR to DIF device\n"); |
| 3680 | |
| 3681 | /* fall through */ |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3682 | case READ_6: |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 3683 | read: |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3684 | errsts = check_readiness(SCpnt, 0, devip); |
| 3685 | if (errsts) |
| 3686 | break; |
| 3687 | if (scsi_debug_fake_rw) |
| 3688 | break; |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 3689 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
| 3690 | errsts = resp_read(SCpnt, lba, num, devip, ei_lba); |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3691 | if (inj_recovered && (0 == errsts)) { |
| 3692 | mk_sense_buffer(devip, RECOVERED_ERROR, |
| 3693 | THRESHOLD_EXCEEDED, 0); |
| 3694 | errsts = check_condition_result; |
| 3695 | } else if (inj_transport && (0 == errsts)) { |
| 3696 | mk_sense_buffer(devip, ABORTED_COMMAND, |
| 3697 | TRANSPORT_PROBLEM, ACK_NAK_TO); |
| 3698 | errsts = check_condition_result; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3699 | } else if (inj_dif && (0 == errsts)) { |
| 3700 | mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1); |
| 3701 | errsts = illegal_condition_result; |
| 3702 | } else if (inj_dix && (0 == errsts)) { |
| 3703 | mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1); |
| 3704 | errsts = illegal_condition_result; |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3705 | } |
| 3706 | break; |
| 3707 | case REPORT_LUNS: /* mandatory, ignore unit attention */ |
| 3708 | delay_override = 1; |
| 3709 | errsts = resp_report_luns(SCpnt, devip); |
| 3710 | break; |
| 3711 | case VERIFY: /* 10 byte SBC-2 command */ |
| 3712 | errsts = check_readiness(SCpnt, 0, devip); |
| 3713 | break; |
| 3714 | case WRITE_16: |
| 3715 | case WRITE_12: |
| 3716 | case WRITE_10: |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 3717 | /* WRITE{10,12,16} and DIF Type 2 are natural enemies */ |
| 3718 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && |
| 3719 | cmd[1] & 0xe0) { |
| 3720 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 3721 | INVALID_COMMAND_OPCODE, 0); |
| 3722 | errsts = check_condition_result; |
| 3723 | break; |
| 3724 | } |
| 3725 | |
| 3726 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || |
| 3727 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && |
| 3728 | (cmd[1] & 0xe0) == 0) |
| 3729 | printk(KERN_ERR "Unprotected RD/WR to DIF device\n"); |
| 3730 | |
| 3731 | /* fall through */ |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3732 | case WRITE_6: |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 3733 | write: |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3734 | errsts = check_readiness(SCpnt, 0, devip); |
| 3735 | if (errsts) |
| 3736 | break; |
| 3737 | if (scsi_debug_fake_rw) |
| 3738 | break; |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 3739 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
| 3740 | errsts = resp_write(SCpnt, lba, num, devip, ei_lba); |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3741 | if (inj_recovered && (0 == errsts)) { |
| 3742 | mk_sense_buffer(devip, RECOVERED_ERROR, |
| 3743 | THRESHOLD_EXCEEDED, 0); |
| 3744 | errsts = check_condition_result; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3745 | } else if (inj_dif && (0 == errsts)) { |
| 3746 | mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1); |
| 3747 | errsts = illegal_condition_result; |
| 3748 | } else if (inj_dix && (0 == errsts)) { |
| 3749 | mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1); |
| 3750 | errsts = illegal_condition_result; |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3751 | } |
| 3752 | break; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3753 | case WRITE_SAME_16: |
| 3754 | if (cmd[1] & 0x8) |
| 3755 | unmap = 1; |
| 3756 | /* fall through */ |
| 3757 | case WRITE_SAME: |
| 3758 | errsts = check_readiness(SCpnt, 0, devip); |
| 3759 | if (errsts) |
| 3760 | break; |
| 3761 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
| 3762 | errsts = resp_write_same(SCpnt, lba, num, devip, ei_lba, unmap); |
| 3763 | break; |
| 3764 | case UNMAP: |
| 3765 | errsts = check_readiness(SCpnt, 0, devip); |
| 3766 | if (errsts) |
| 3767 | break; |
| 3768 | |
| 3769 | if (scsi_debug_unmap_max_desc == 0) { |
| 3770 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 3771 | INVALID_COMMAND_OPCODE, 0); |
| 3772 | errsts = check_condition_result; |
| 3773 | } else |
| 3774 | errsts = resp_unmap(SCpnt, devip); |
| 3775 | break; |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3776 | case MODE_SENSE: |
| 3777 | case MODE_SENSE_10: |
| 3778 | errsts = resp_mode_sense(SCpnt, target, devip); |
| 3779 | break; |
| 3780 | case MODE_SELECT: |
| 3781 | errsts = resp_mode_select(SCpnt, 1, devip); |
| 3782 | break; |
| 3783 | case MODE_SELECT_10: |
| 3784 | errsts = resp_mode_select(SCpnt, 0, devip); |
| 3785 | break; |
| 3786 | case LOG_SENSE: |
| 3787 | errsts = resp_log_sense(SCpnt, devip); |
| 3788 | break; |
| 3789 | case SYNCHRONIZE_CACHE: |
| 3790 | delay_override = 1; |
| 3791 | errsts = check_readiness(SCpnt, 0, devip); |
| 3792 | break; |
| 3793 | case WRITE_BUFFER: |
| 3794 | errsts = check_readiness(SCpnt, 1, devip); |
| 3795 | break; |
| 3796 | case XDWRITEREAD_10: |
| 3797 | if (!scsi_bidi_cmnd(SCpnt)) { |
| 3798 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 3799 | INVALID_FIELD_IN_CDB, 0); |
| 3800 | errsts = check_condition_result; |
| 3801 | break; |
| 3802 | } |
| 3803 | |
| 3804 | errsts = check_readiness(SCpnt, 0, devip); |
| 3805 | if (errsts) |
| 3806 | break; |
| 3807 | if (scsi_debug_fake_rw) |
| 3808 | break; |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 3809 | get_data_transfer_info(cmd, &lba, &num, &ei_lba); |
| 3810 | errsts = resp_read(SCpnt, lba, num, devip, ei_lba); |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3811 | if (errsts) |
| 3812 | break; |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 3813 | errsts = resp_write(SCpnt, lba, num, devip, ei_lba); |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3814 | if (errsts) |
| 3815 | break; |
| 3816 | errsts = resp_xdwriteread(SCpnt, lba, num, devip); |
| 3817 | break; |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 3818 | case VARIABLE_LENGTH_CMD: |
| 3819 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION) { |
| 3820 | |
| 3821 | if ((cmd[10] & 0xe0) == 0) |
| 3822 | printk(KERN_ERR |
| 3823 | "Unprotected RD/WR to DIF device\n"); |
| 3824 | |
| 3825 | if (cmd[9] == READ_32) { |
| 3826 | BUG_ON(SCpnt->cmd_len < 32); |
| 3827 | goto read; |
| 3828 | } |
| 3829 | |
| 3830 | if (cmd[9] == WRITE_32) { |
| 3831 | BUG_ON(SCpnt->cmd_len < 32); |
| 3832 | goto write; |
| 3833 | } |
| 3834 | } |
| 3835 | |
| 3836 | mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| 3837 | INVALID_FIELD_IN_CDB, 0); |
| 3838 | errsts = check_condition_result; |
| 3839 | break; |
| 3840 | |
FUJITA Tomonori | 639db47 | 2008-03-20 11:09:19 +0900 | [diff] [blame] | 3841 | default: |
| 3842 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 3843 | printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " |
| 3844 | "supported\n", *cmd); |
| 3845 | errsts = check_readiness(SCpnt, 1, devip); |
| 3846 | if (errsts) |
| 3847 | break; /* Unit attention takes precedence */ |
| 3848 | mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); |
| 3849 | errsts = check_condition_result; |
| 3850 | break; |
| 3851 | } |
| 3852 | return schedule_resp(SCpnt, devip, done, errsts, |
| 3853 | (delay_override ? 0 : scsi_debug_delay)); |
| 3854 | } |
| 3855 | |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 3856 | static struct scsi_host_template sdebug_driver_template = { |
| 3857 | .proc_info = scsi_debug_proc_info, |
| 3858 | .proc_name = sdebug_proc_name, |
| 3859 | .name = "SCSI DEBUG", |
| 3860 | .info = scsi_debug_info, |
| 3861 | .slave_alloc = scsi_debug_slave_alloc, |
| 3862 | .slave_configure = scsi_debug_slave_configure, |
| 3863 | .slave_destroy = scsi_debug_slave_destroy, |
| 3864 | .ioctl = scsi_debug_ioctl, |
| 3865 | .queuecommand = scsi_debug_queuecommand, |
| 3866 | .eh_abort_handler = scsi_debug_abort, |
| 3867 | .eh_bus_reset_handler = scsi_debug_bus_reset, |
| 3868 | .eh_device_reset_handler = scsi_debug_device_reset, |
| 3869 | .eh_host_reset_handler = scsi_debug_host_reset, |
| 3870 | .bios_param = scsi_debug_biosparam, |
| 3871 | .can_queue = SCSI_DEBUG_CANQUEUE, |
| 3872 | .this_id = 7, |
| 3873 | .sg_tablesize = 256, |
| 3874 | .cmd_per_lun = 16, |
| 3875 | .max_sectors = 0xffff, |
| 3876 | .use_clustering = DISABLE_CLUSTERING, |
| 3877 | .module = THIS_MODULE, |
| 3878 | }; |
| 3879 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3880 | static int sdebug_driver_probe(struct device * dev) |
| 3881 | { |
| 3882 | int error = 0; |
| 3883 | struct sdebug_host_info *sdbg_host; |
| 3884 | struct Scsi_Host *hpnt; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3885 | int host_prot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3886 | |
| 3887 | sdbg_host = to_sdebug_host(dev); |
| 3888 | |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 3889 | sdebug_driver_template.can_queue = scsi_debug_max_queue; |
| 3890 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); |
| 3891 | if (NULL == hpnt) { |
| 3892 | printk(KERN_ERR "%s: scsi_register failed\n", __func__); |
| 3893 | error = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3894 | return error; |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 3895 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3896 | |
| 3897 | sdbg_host->shost = hpnt; |
| 3898 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; |
| 3899 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) |
| 3900 | hpnt->max_id = scsi_debug_num_tgts + 1; |
| 3901 | else |
| 3902 | hpnt->max_id = scsi_debug_num_tgts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3903 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3904 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 3905 | host_prot = 0; |
| 3906 | |
| 3907 | switch (scsi_debug_dif) { |
| 3908 | |
| 3909 | case SD_DIF_TYPE1_PROTECTION: |
| 3910 | host_prot = SHOST_DIF_TYPE1_PROTECTION; |
| 3911 | if (scsi_debug_dix) |
| 3912 | host_prot |= SHOST_DIX_TYPE1_PROTECTION; |
| 3913 | break; |
| 3914 | |
| 3915 | case SD_DIF_TYPE2_PROTECTION: |
| 3916 | host_prot = SHOST_DIF_TYPE2_PROTECTION; |
| 3917 | if (scsi_debug_dix) |
| 3918 | host_prot |= SHOST_DIX_TYPE2_PROTECTION; |
| 3919 | break; |
| 3920 | |
| 3921 | case SD_DIF_TYPE3_PROTECTION: |
| 3922 | host_prot = SHOST_DIF_TYPE3_PROTECTION; |
| 3923 | if (scsi_debug_dix) |
| 3924 | host_prot |= SHOST_DIX_TYPE3_PROTECTION; |
| 3925 | break; |
| 3926 | |
| 3927 | default: |
| 3928 | if (scsi_debug_dix) |
| 3929 | host_prot |= SHOST_DIX_TYPE0_PROTECTION; |
| 3930 | break; |
| 3931 | } |
| 3932 | |
| 3933 | scsi_host_set_prot(hpnt, host_prot); |
| 3934 | |
| 3935 | printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n", |
| 3936 | (host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", |
| 3937 | (host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", |
| 3938 | (host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", |
| 3939 | (host_prot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", |
| 3940 | (host_prot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", |
| 3941 | (host_prot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", |
| 3942 | (host_prot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); |
| 3943 | |
| 3944 | if (scsi_debug_guard == 1) |
| 3945 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP); |
| 3946 | else |
| 3947 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC); |
| 3948 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3949 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
| 3950 | if (error) { |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 3951 | printk(KERN_ERR "%s: scsi_add_host failed\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3952 | error = -ENODEV; |
| 3953 | scsi_host_put(hpnt); |
| 3954 | } else |
| 3955 | scsi_scan_host(hpnt); |
| 3956 | |
| 3957 | |
| 3958 | return error; |
| 3959 | } |
| 3960 | |
| 3961 | static int sdebug_driver_remove(struct device * dev) |
| 3962 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3963 | struct sdebug_host_info *sdbg_host; |
FUJITA Tomonori | 8b40228 | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 3964 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3965 | |
| 3966 | sdbg_host = to_sdebug_host(dev); |
| 3967 | |
| 3968 | if (!sdbg_host) { |
| 3969 | printk(KERN_ERR "%s: Unable to locate host info\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 3970 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3971 | return -ENODEV; |
| 3972 | } |
| 3973 | |
| 3974 | scsi_remove_host(sdbg_host->shost); |
| 3975 | |
FUJITA Tomonori | 8b40228 | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 3976 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
| 3977 | dev_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3978 | list_del(&sdbg_devinfo->dev_list); |
| 3979 | kfree(sdbg_devinfo); |
| 3980 | } |
| 3981 | |
| 3982 | scsi_host_put(sdbg_host->shost); |
| 3983 | return 0; |
| 3984 | } |
| 3985 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3986 | static int pseudo_lld_bus_match(struct device *dev, |
| 3987 | struct device_driver *dev_driver) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3988 | { |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3989 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3990 | } |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3991 | |
| 3992 | static struct bus_type pseudo_lld_bus = { |
| 3993 | .name = "pseudo", |
| 3994 | .match = pseudo_lld_bus_match, |
| 3995 | .probe = sdebug_driver_probe, |
| 3996 | .remove = sdebug_driver_remove, |
| 3997 | }; |