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> |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 45 | #include <linux/spinlock.h> |
| 46 | #include <linux/interrupt.h> |
| 47 | #include <linux/atomic.h> |
| 48 | #include <linux/hrtimer.h> |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 49 | |
| 50 | #include <net/checksum.h> |
FUJITA Tomonori | 9ff26ee | 2008-03-02 18:30:15 +0900 | [diff] [blame] | 51 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 52 | #include <asm/unaligned.h> |
| 53 | |
FUJITA Tomonori | 9ff26ee | 2008-03-02 18:30:15 +0900 | [diff] [blame] | 54 | #include <scsi/scsi.h> |
| 55 | #include <scsi/scsi_cmnd.h> |
| 56 | #include <scsi/scsi_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #include <scsi/scsi_host.h> |
| 58 | #include <scsi/scsicam.h> |
FUJITA Tomonori | a34c4e9 | 2008-03-25 09:26:50 +0900 | [diff] [blame] | 59 | #include <scsi/scsi_eh.h> |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 60 | #include <scsi/scsi_tcq.h> |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 61 | #include <scsi/scsi_dbg.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 63 | #include "sd.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | #include "scsi_logging.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 66 | #define SCSI_DEBUG_VERSION "1.85" |
| 67 | static const char *scsi_debug_version_date = "20141022"; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 68 | |
| 69 | #define MY_NAME "scsi_debug" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 71 | /* Additional Sense Code (ASC) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 72 | #define NO_ADDITIONAL_SENSE 0x0 |
| 73 | #define LOGICAL_UNIT_NOT_READY 0x4 |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 74 | #define LOGICAL_UNIT_COMMUNICATION_FAILURE 0x8 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | #define UNRECOVERED_READ_ERR 0x11 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 76 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | #define INVALID_OPCODE 0x20 |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 78 | #define LBA_OUT_OF_RANGE 0x21 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | #define INVALID_FIELD_IN_CDB 0x24 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 80 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 81 | #define UA_RESET_ASC 0x29 |
| 82 | #define UA_CHANGED_ASC 0x2a |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 83 | #define INSUFF_RES_ASC 0x55 |
| 84 | #define INSUFF_RES_ASCQ 0x3 |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 85 | #define POWER_ON_RESET_ASCQ 0x0 |
| 86 | #define BUS_RESET_ASCQ 0x2 /* scsi bus reset occurred */ |
| 87 | #define MODE_CHANGED_ASCQ 0x1 /* mode parameters changed */ |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 88 | #define CAPACITY_CHANGED_ASCQ 0x9 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | #define SAVING_PARAMS_UNSUP 0x39 |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 90 | #define TRANSPORT_PROBLEM 0x4b |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 91 | #define THRESHOLD_EXCEEDED 0x5d |
| 92 | #define LOW_POWER_COND_ON 0x5e |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 93 | #define MISCOMPARE_VERIFY_ASC 0x1d |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 95 | /* Additional Sense Code Qualifier (ASCQ) */ |
| 96 | #define ACK_NAK_TO 0x3 |
| 97 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | |
| 99 | /* Default values for driver parameters */ |
| 100 | #define DEF_NUM_HOST 1 |
| 101 | #define DEF_NUM_TGTS 1 |
| 102 | #define DEF_MAX_LUNS 1 |
| 103 | /* With these defaults, this driver will make 1 host with 1 target |
| 104 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. |
| 105 | */ |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 106 | #define DEF_ATO 1 |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 107 | #define DEF_DELAY 1 /* if > 0 unit is a jiffy */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | #define DEF_DEV_SIZE_MB 8 |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 109 | #define DEF_DIF 0 |
| 110 | #define DEF_DIX 0 |
| 111 | #define DEF_D_SENSE 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | #define DEF_EVERY_NTH 0 |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 113 | #define DEF_FAKE_RW 0 |
| 114 | #define DEF_GUARD 0 |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 115 | #define DEF_HOST_LOCK 0 |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 116 | #define DEF_LBPU 0 |
| 117 | #define DEF_LBPWS 0 |
| 118 | #define DEF_LBPWS10 0 |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 119 | #define DEF_LBPRZ 1 |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 120 | #define DEF_LOWEST_ALIGNED 0 |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 121 | #define DEF_NDELAY 0 /* if > 0 unit is a nanosecond */ |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 122 | #define DEF_NO_LUN_0 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | #define DEF_NUM_PARTS 0 |
| 124 | #define DEF_OPTS 0 |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 125 | #define DEF_OPT_BLKS 64 |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 126 | #define DEF_PHYSBLK_EXP 0 |
| 127 | #define DEF_PTYPE 0 |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 128 | #define DEF_REMOVABLE false |
Douglas Gilbert | e46b034 | 2014-08-05 12:21:53 +0200 | [diff] [blame] | 129 | #define DEF_SCSI_LEVEL 6 /* INQUIRY, byte2 [6->SPC-4] */ |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 130 | #define DEF_SECTOR_SIZE 512 |
| 131 | #define DEF_UNMAP_ALIGNMENT 0 |
| 132 | #define DEF_UNMAP_GRANULARITY 1 |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 133 | #define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF |
| 134 | #define DEF_UNMAP_MAX_DESC 256 |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 135 | #define DEF_VIRTUAL_GB 0 |
| 136 | #define DEF_VPD_USE_HOSTNO 1 |
| 137 | #define DEF_WRITESAME_LENGTH 0xFFFF |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 138 | #define DEF_STRICT 0 |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 139 | #define DELAY_OVERRIDDEN -9999 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | |
| 141 | /* bit mask values for scsi_debug_opts */ |
| 142 | #define SCSI_DEBUG_OPT_NOISE 1 |
| 143 | #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 |
| 144 | #define SCSI_DEBUG_OPT_TIMEOUT 4 |
| 145 | #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 146 | #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 147 | #define SCSI_DEBUG_OPT_DIF_ERR 32 |
| 148 | #define SCSI_DEBUG_OPT_DIX_ERR 64 |
Martin K. Petersen | 18a4d0a | 2012-02-09 13:48:53 -0500 | [diff] [blame] | 149 | #define SCSI_DEBUG_OPT_MAC_TIMEOUT 128 |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 150 | #define SCSI_DEBUG_OPT_SHORT_TRANSFER 0x100 |
| 151 | #define SCSI_DEBUG_OPT_Q_NOISE 0x200 |
| 152 | #define SCSI_DEBUG_OPT_ALL_TSF 0x400 |
| 153 | #define SCSI_DEBUG_OPT_RARE_TSF 0x800 |
| 154 | #define SCSI_DEBUG_OPT_N_WCE 0x1000 |
| 155 | #define SCSI_DEBUG_OPT_RESET_NOISE 0x2000 |
| 156 | #define SCSI_DEBUG_OPT_NO_CDB_NOISE 0x4000 |
| 157 | #define SCSI_DEBUG_OPT_ALL_NOISE (0x1 | 0x200 | 0x2000) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
| 159 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| 160 | * - a RECOVERED_ERROR is simulated on successful read and write |
| 161 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 162 | * - a TRANSPORT_ERROR is simulated on successful read and write |
| 163 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | * |
| 165 | * When "every_nth" < 0 then after "- every_nth" commands: |
| 166 | * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| 167 | * - a RECOVERED_ERROR is simulated on successful read and write |
| 168 | * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 169 | * - a TRANSPORT_ERROR is simulated on successful read and write |
| 170 | * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | * This will continue until some other action occurs (e.g. the user |
| 172 | * writing a new value (other than -1 or 1) to every_nth via sysfs). |
| 173 | */ |
| 174 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 175 | /* As indicated in SAM-5 and SPC-4 Unit Attentions (UAs)are returned in |
| 176 | * priority order. In the subset implemented here lower numbers have higher |
| 177 | * priority. The UA numbers should be a sequence starting from 0 with |
| 178 | * SDEBUG_NUM_UAS being 1 higher than the highest numbered UA. */ |
| 179 | #define SDEBUG_UA_POR 0 /* Power on, reset, or bus device reset */ |
| 180 | #define SDEBUG_UA_BUS_RESET 1 |
| 181 | #define SDEBUG_UA_MODE_CHANGED 2 |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 182 | #define SDEBUG_UA_CAPACITY_CHANGED 3 |
| 183 | #define SDEBUG_NUM_UAS 4 |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 184 | |
| 185 | /* for check_readiness() */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 186 | #define UAS_ONLY 1 /* check for UAs only */ |
| 187 | #define UAS_TUR 0 /* if no UAs then check if media access possible */ |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this |
| 190 | * sector on read commands: */ |
| 191 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ |
Douglas Gilbert | 32f7ef7 | 2011-03-11 10:43:35 -0500 | [diff] [blame] | 192 | #define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
| 194 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) |
| 195 | * or "peripheral device" addressing (value 0) */ |
| 196 | #define SAM2_LUN_ADDRESS_METHOD 0 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 197 | #define SAM2_WLUN_REPORT_LUNS 0xc101 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 199 | /* SCSI_DEBUG_CANQUEUE is the maximum number of commands that can be queued |
| 200 | * (for response) at one time. Can be reduced by max_queue option. Command |
| 201 | * responses are not queued when delay=0 and ndelay=0. The per-device |
| 202 | * DEF_CMD_PER_LUN can be changed via sysfs: |
| 203 | * /sys/class/scsi_device/<h:c:t:l>/device/queue_depth but cannot exceed |
| 204 | * SCSI_DEBUG_CANQUEUE. */ |
| 205 | #define SCSI_DEBUG_CANQUEUE_WORDS 9 /* a WORD is bits in a long */ |
| 206 | #define SCSI_DEBUG_CANQUEUE (SCSI_DEBUG_CANQUEUE_WORDS * BITS_PER_LONG) |
| 207 | #define DEF_CMD_PER_LUN 255 |
| 208 | |
| 209 | #if DEF_CMD_PER_LUN > SCSI_DEBUG_CANQUEUE |
| 210 | #warning "Expect DEF_CMD_PER_LUN <= SCSI_DEBUG_CANQUEUE" |
| 211 | #endif |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 212 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 213 | /* SCSI opcodes (first byte of cdb) mapped onto these indexes */ |
| 214 | enum sdeb_opcode_index { |
| 215 | SDEB_I_INVALID_OPCODE = 0, |
| 216 | SDEB_I_INQUIRY = 1, |
| 217 | SDEB_I_REPORT_LUNS = 2, |
| 218 | SDEB_I_REQUEST_SENSE = 3, |
| 219 | SDEB_I_TEST_UNIT_READY = 4, |
| 220 | SDEB_I_MODE_SENSE = 5, /* 6, 10 */ |
| 221 | SDEB_I_MODE_SELECT = 6, /* 6, 10 */ |
| 222 | SDEB_I_LOG_SENSE = 7, |
| 223 | SDEB_I_READ_CAPACITY = 8, /* 10; 16 is in SA_IN(16) */ |
| 224 | SDEB_I_READ = 9, /* 6, 10, 12, 16 */ |
| 225 | SDEB_I_WRITE = 10, /* 6, 10, 12, 16 */ |
| 226 | SDEB_I_START_STOP = 11, |
| 227 | SDEB_I_SERV_ACT_IN = 12, /* 12, 16 */ |
| 228 | SDEB_I_SERV_ACT_OUT = 13, /* 12, 16 */ |
| 229 | SDEB_I_MAINT_IN = 14, |
| 230 | SDEB_I_MAINT_OUT = 15, |
| 231 | SDEB_I_VERIFY = 16, /* 10 only */ |
| 232 | SDEB_I_VARIABLE_LEN = 17, |
| 233 | SDEB_I_RESERVE = 18, /* 6, 10 */ |
| 234 | SDEB_I_RELEASE = 19, /* 6, 10 */ |
| 235 | SDEB_I_ALLOW_REMOVAL = 20, /* PREVENT ALLOW MEDIUM REMOVAL */ |
| 236 | SDEB_I_REZERO_UNIT = 21, /* REWIND in SSC */ |
| 237 | SDEB_I_ATA_PT = 22, /* 12, 16 */ |
| 238 | SDEB_I_SEND_DIAG = 23, |
| 239 | SDEB_I_UNMAP = 24, |
| 240 | SDEB_I_XDWRITEREAD = 25, /* 10 only */ |
| 241 | SDEB_I_WRITE_BUFFER = 26, |
| 242 | SDEB_I_WRITE_SAME = 27, /* 10, 16 */ |
| 243 | SDEB_I_SYNC_CACHE = 28, /* 10 only */ |
| 244 | SDEB_I_COMP_WRITE = 29, |
| 245 | SDEB_I_LAST_ELEMENT = 30, /* keep this last */ |
| 246 | }; |
| 247 | |
| 248 | static const unsigned char opcode_ind_arr[256] = { |
| 249 | /* 0x0; 0x0->0x1f: 6 byte cdbs */ |
| 250 | SDEB_I_TEST_UNIT_READY, SDEB_I_REZERO_UNIT, 0, SDEB_I_REQUEST_SENSE, |
| 251 | 0, 0, 0, 0, |
| 252 | SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, 0, |
| 253 | 0, 0, SDEB_I_INQUIRY, 0, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, |
| 254 | SDEB_I_RELEASE, |
| 255 | 0, 0, SDEB_I_MODE_SENSE, SDEB_I_START_STOP, 0, SDEB_I_SEND_DIAG, |
| 256 | SDEB_I_ALLOW_REMOVAL, 0, |
| 257 | /* 0x20; 0x20->0x3f: 10 byte cdbs */ |
| 258 | 0, 0, 0, 0, 0, SDEB_I_READ_CAPACITY, 0, 0, |
| 259 | SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, SDEB_I_VERIFY, |
| 260 | 0, 0, 0, 0, 0, SDEB_I_SYNC_CACHE, 0, 0, |
| 261 | 0, 0, 0, SDEB_I_WRITE_BUFFER, 0, 0, 0, 0, |
| 262 | /* 0x40; 0x40->0x5f: 10 byte cdbs */ |
| 263 | 0, SDEB_I_WRITE_SAME, SDEB_I_UNMAP, 0, 0, 0, 0, 0, |
| 264 | 0, 0, 0, 0, 0, SDEB_I_LOG_SENSE, 0, 0, |
| 265 | 0, 0, 0, SDEB_I_XDWRITEREAD, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, |
| 266 | SDEB_I_RELEASE, |
| 267 | 0, 0, SDEB_I_MODE_SENSE, 0, 0, 0, 0, 0, |
| 268 | /* 0x60; 0x60->0x7d are reserved */ |
| 269 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 270 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 271 | 0, SDEB_I_VARIABLE_LEN, |
| 272 | /* 0x80; 0x80->0x9f: 16 byte cdbs */ |
| 273 | 0, 0, 0, 0, 0, SDEB_I_ATA_PT, 0, 0, |
| 274 | SDEB_I_READ, SDEB_I_COMP_WRITE, SDEB_I_WRITE, 0, 0, 0, 0, 0, |
| 275 | 0, 0, 0, SDEB_I_WRITE_SAME, 0, 0, 0, 0, |
| 276 | 0, 0, 0, 0, 0, 0, SDEB_I_SERV_ACT_IN, SDEB_I_SERV_ACT_OUT, |
| 277 | /* 0xa0; 0xa0->0xbf: 12 byte cdbs */ |
| 278 | SDEB_I_REPORT_LUNS, SDEB_I_ATA_PT, 0, SDEB_I_MAINT_IN, |
| 279 | SDEB_I_MAINT_OUT, 0, 0, 0, |
| 280 | SDEB_I_READ, SDEB_I_SERV_ACT_OUT, SDEB_I_WRITE, SDEB_I_SERV_ACT_IN, |
| 281 | 0, 0, 0, 0, |
| 282 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 283 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 284 | /* 0xc0; 0xc0->0xff: vendor specific */ |
| 285 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 286 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 287 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 288 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 289 | }; |
| 290 | |
| 291 | #define F_D_IN 1 |
| 292 | #define F_D_OUT 2 |
| 293 | #define F_D_OUT_MAYBE 4 /* WRITE SAME, NDOB bit */ |
| 294 | #define F_D_UNKN 8 |
| 295 | #define F_RL_WLUN_OK 0x10 |
| 296 | #define F_SKIP_UA 0x20 |
| 297 | #define F_DELAY_OVERR 0x40 |
| 298 | #define F_SA_LOW 0x80 /* cdb byte 1, bits 4 to 0 */ |
| 299 | #define F_SA_HIGH 0x100 /* as used by variable length cdbs */ |
| 300 | #define F_INV_OP 0x200 |
| 301 | #define F_FAKE_RW 0x400 |
| 302 | #define F_M_ACCESS 0x800 /* media access */ |
| 303 | |
| 304 | #define FF_RESPOND (F_RL_WLUN_OK | F_SKIP_UA | F_DELAY_OVERR) |
| 305 | #define FF_DIRECT_IO (F_M_ACCESS | F_FAKE_RW) |
| 306 | #define FF_SA (F_SA_HIGH | F_SA_LOW) |
| 307 | |
| 308 | struct sdebug_dev_info; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 309 | static int resp_inquiry(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 310 | static int resp_report_luns(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 311 | static int resp_requests(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 312 | static int resp_mode_sense(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 313 | static int resp_mode_select(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 314 | static int resp_log_sense(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 315 | static int resp_readcap(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 316 | static int resp_read_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 317 | static int resp_write_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 318 | static int resp_start_stop(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 319 | static int resp_readcap16(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 320 | static int resp_get_lba_status(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 321 | static int resp_report_tgtpgs(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 322 | static int resp_unmap(struct scsi_cmnd *, struct sdebug_dev_info *); |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 323 | static int resp_rsup_opcodes(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 324 | static int resp_rsup_tmfs(struct scsi_cmnd *, struct sdebug_dev_info *); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 325 | static int resp_write_same_10(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 326 | static int resp_write_same_16(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 327 | static int resp_xdwriteread_10(struct scsi_cmnd *, struct sdebug_dev_info *); |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 328 | static int resp_comp_write(struct scsi_cmnd *, struct sdebug_dev_info *); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 329 | |
| 330 | struct opcode_info_t { |
| 331 | u8 num_attached; /* 0 if this is it (i.e. a leaf); use 0xff |
| 332 | * for terminating element */ |
| 333 | u8 opcode; /* if num_attached > 0, preferred */ |
| 334 | u16 sa; /* service action */ |
| 335 | u32 flags; /* OR-ed set of SDEB_F_* */ |
| 336 | int (*pfp)(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 337 | const struct opcode_info_t *arrp; /* num_attached elements or NULL */ |
| 338 | u8 len_mask[16]; /* len=len_mask[0], then mask for cdb[1]... */ |
| 339 | /* ignore cdb bytes after position 15 */ |
| 340 | }; |
| 341 | |
| 342 | static const struct opcode_info_t msense_iarr[1] = { |
| 343 | {0, 0x1a, 0, F_D_IN, NULL, NULL, |
| 344 | {6, 0xe8, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 345 | }; |
| 346 | |
| 347 | static const struct opcode_info_t mselect_iarr[1] = { |
| 348 | {0, 0x15, 0, F_D_OUT, NULL, NULL, |
| 349 | {6, 0xf1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 350 | }; |
| 351 | |
| 352 | static const struct opcode_info_t read_iarr[3] = { |
| 353 | {0, 0x28, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL,/* READ(10) */ |
| 354 | {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, |
| 355 | 0, 0, 0, 0} }, |
| 356 | {0, 0x8, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL, /* READ(6) */ |
| 357 | {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 358 | {0, 0xa8, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL,/* READ(12) */ |
| 359 | {12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, |
| 360 | 0xc7, 0, 0, 0, 0} }, |
| 361 | }; |
| 362 | |
| 363 | static const struct opcode_info_t write_iarr[3] = { |
| 364 | {0, 0x2a, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 10 */ |
| 365 | {10, 0xfb, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, |
| 366 | 0, 0, 0, 0} }, |
| 367 | {0, 0xa, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 6 */ |
| 368 | {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 369 | {0, 0xaa, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 12 */ |
| 370 | {12, 0xfb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, |
| 371 | 0xc7, 0, 0, 0, 0} }, |
| 372 | }; |
| 373 | |
| 374 | static const struct opcode_info_t sa_in_iarr[1] = { |
| 375 | {0, 0x9e, 0x12, F_SA_LOW | F_D_IN, resp_get_lba_status, NULL, |
| 376 | {16, 0x12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 377 | 0xff, 0xff, 0xff, 0, 0xc7} }, |
| 378 | }; |
| 379 | |
| 380 | static const struct opcode_info_t vl_iarr[1] = { /* VARIABLE LENGTH */ |
| 381 | {0, 0x7f, 0xb, F_SA_HIGH | F_D_OUT | FF_DIRECT_IO, resp_write_dt0, |
| 382 | NULL, {32, 0xc7, 0, 0, 0, 0, 0x1f, 0x18, 0x0, 0xb, 0xfa, |
| 383 | 0, 0xff, 0xff, 0xff, 0xff} }, /* WRITE(32) */ |
| 384 | }; |
| 385 | |
| 386 | static const struct opcode_info_t maint_in_iarr[2] = { |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 387 | {0, 0xa3, 0xc, F_SA_LOW | F_D_IN, resp_rsup_opcodes, NULL, |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 388 | {12, 0xc, 0x87, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, |
| 389 | 0xc7, 0, 0, 0, 0} }, |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 390 | {0, 0xa3, 0xd, F_SA_LOW | F_D_IN, resp_rsup_tmfs, NULL, |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 391 | {12, 0xd, 0x80, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, |
| 392 | 0, 0} }, |
| 393 | }; |
| 394 | |
| 395 | static const struct opcode_info_t write_same_iarr[1] = { |
| 396 | {0, 0x93, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, resp_write_same_16, NULL, |
| 397 | {16, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 398 | 0xff, 0xff, 0xff, 0x1f, 0xc7} }, |
| 399 | }; |
| 400 | |
| 401 | static const struct opcode_info_t reserve_iarr[1] = { |
| 402 | {0, 0x16, 0, F_D_OUT, NULL, NULL, /* RESERVE(6) */ |
| 403 | {6, 0x1f, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 404 | }; |
| 405 | |
| 406 | static const struct opcode_info_t release_iarr[1] = { |
| 407 | {0, 0x17, 0, F_D_OUT, NULL, NULL, /* RELEASE(6) */ |
| 408 | {6, 0x1f, 0xff, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 409 | }; |
| 410 | |
| 411 | |
| 412 | /* This array is accessed via SDEB_I_* values. Make sure all are mapped, |
| 413 | * plus the terminating elements for logic that scans this table such as |
| 414 | * REPORT SUPPORTED OPERATION CODES. */ |
| 415 | static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEMENT + 1] = { |
| 416 | /* 0 */ |
| 417 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, |
| 418 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 419 | {0, 0x12, 0, FF_RESPOND | F_D_IN, resp_inquiry, NULL, |
| 420 | {6, 0xe3, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 421 | {0, 0xa0, 0, FF_RESPOND | F_D_IN, resp_report_luns, NULL, |
| 422 | {12, 0xe3, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, |
| 423 | 0, 0} }, |
| 424 | {0, 0x3, 0, FF_RESPOND | F_D_IN, resp_requests, NULL, |
| 425 | {6, 0xe1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 426 | {0, 0x0, 0, F_M_ACCESS | F_RL_WLUN_OK, NULL, NULL,/* TEST UNIT READY */ |
| 427 | {6, 0, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 428 | {1, 0x5a, 0, F_D_IN, resp_mode_sense, msense_iarr, |
| 429 | {10, 0xf8, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, |
| 430 | 0} }, |
| 431 | {1, 0x55, 0, F_D_OUT, resp_mode_select, mselect_iarr, |
| 432 | {10, 0xf1, 0, 0, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, |
| 433 | {0, 0x4d, 0, F_D_IN, resp_log_sense, NULL, |
| 434 | {10, 0xe3, 0xff, 0xff, 0, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, |
| 435 | 0, 0, 0} }, |
| 436 | {0, 0x25, 0, F_D_IN, resp_readcap, NULL, |
| 437 | {10, 0xe1, 0xff, 0xff, 0xff, 0xff, 0, 0, 0x1, 0xc7, 0, 0, 0, 0, |
| 438 | 0, 0} }, |
| 439 | {3, 0x88, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, read_iarr, |
| 440 | {16, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 441 | 0xff, 0xff, 0xff, 0x9f, 0xc7} }, /* READ(16) */ |
| 442 | /* 10 */ |
| 443 | {3, 0x8a, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, write_iarr, |
| 444 | {16, 0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 445 | 0xff, 0xff, 0xff, 0x9f, 0xc7} }, /* WRITE(16) */ |
| 446 | {0, 0x1b, 0, 0, resp_start_stop, NULL, /* START STOP UNIT */ |
| 447 | {6, 0x1, 0, 0xf, 0xf7, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 448 | {1, 0x9e, 0x10, F_SA_LOW | F_D_IN, resp_readcap16, sa_in_iarr, |
| 449 | {16, 0x10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 450 | 0xff, 0xff, 0xff, 0x1, 0xc7} }, /* READ CAPACITY(16) */ |
| 451 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* SA OUT */ |
| 452 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 453 | {2, 0xa3, 0xa, F_SA_LOW | F_D_IN, resp_report_tgtpgs, maint_in_iarr, |
| 454 | {12, 0xea, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, 0, |
| 455 | 0} }, |
| 456 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* MAINT OUT */ |
| 457 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 458 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* VERIFY */ |
| 459 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 460 | {1, 0x7f, 0x9, F_SA_HIGH | F_D_IN | FF_DIRECT_IO, resp_read_dt0, |
| 461 | vl_iarr, {32, 0xc7, 0, 0, 0, 0, 0x1f, 0x18, 0x0, 0x9, 0xfe, 0, |
| 462 | 0xff, 0xff, 0xff, 0xff} },/* VARIABLE LENGTH, READ(32) */ |
| 463 | {1, 0x56, 0, F_D_OUT, NULL, reserve_iarr, /* RESERVE(10) */ |
| 464 | {10, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, |
| 465 | 0} }, |
| 466 | {1, 0x57, 0, F_D_OUT, NULL, release_iarr, /* RELEASE(10) */ |
| 467 | {10, 0x13, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, |
| 468 | 0} }, |
| 469 | /* 20 */ |
| 470 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* ALLOW REMOVAL */ |
| 471 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 472 | {0, 0x1, 0, 0, resp_start_stop, NULL, /* REWIND ?? */ |
| 473 | {6, 0x1, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 474 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* ATA_PT */ |
| 475 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 476 | {0, 0x1d, F_D_OUT, 0, NULL, NULL, /* SEND DIAGNOSTIC */ |
| 477 | {6, 0xf7, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 478 | {0, 0x42, 0, F_D_OUT | FF_DIRECT_IO, resp_unmap, NULL, /* UNMAP */ |
| 479 | {10, 0x1, 0, 0, 0, 0, 0x1f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, |
| 480 | {0, 0x53, 0, F_D_IN | F_D_OUT | FF_DIRECT_IO, resp_xdwriteread_10, |
| 481 | NULL, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, |
| 482 | 0, 0, 0, 0, 0, 0} }, |
| 483 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* WRITE_BUFFER */ |
| 484 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 485 | {1, 0x41, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, resp_write_same_10, |
| 486 | write_same_iarr, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, |
| 487 | 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, |
| 488 | {0, 0x35, 0, F_DELAY_OVERR | FF_DIRECT_IO, NULL, NULL, /* SYNC_CACHE */ |
| 489 | {10, 0x7, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, |
| 490 | 0, 0, 0, 0} }, |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 491 | {0, 0x89, 0, F_D_OUT | FF_DIRECT_IO, resp_comp_write, NULL, |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 492 | {16, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, |
| 493 | 0, 0xff, 0x1f, 0xc7} }, /* COMPARE AND WRITE */ |
| 494 | |
| 495 | /* 30 */ |
| 496 | {0xff, 0, 0, 0, NULL, NULL, /* terminating element */ |
| 497 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 498 | }; |
| 499 | |
Douglas Gilbert | 817fd66 | 2014-11-24 20:18:02 -0500 | [diff] [blame] | 500 | struct sdebug_scmd_extra_t { |
| 501 | bool inj_recovered; |
| 502 | bool inj_transport; |
| 503 | bool inj_dif; |
| 504 | bool inj_dix; |
| 505 | bool inj_short; |
| 506 | }; |
| 507 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | static int scsi_debug_add_host = DEF_NUM_HOST; |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 509 | static int scsi_debug_ato = DEF_ATO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | static int scsi_debug_delay = DEF_DELAY; |
| 511 | static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 512 | static int scsi_debug_dif = DEF_DIF; |
| 513 | static int scsi_debug_dix = DEF_DIX; |
| 514 | static int scsi_debug_dsense = DEF_D_SENSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | static int scsi_debug_every_nth = DEF_EVERY_NTH; |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 516 | static int scsi_debug_fake_rw = DEF_FAKE_RW; |
Akinobu Mita | 68aee7b | 2013-09-18 21:27:27 +0900 | [diff] [blame] | 517 | static unsigned int scsi_debug_guard = DEF_GUARD; |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 518 | static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | static int scsi_debug_max_luns = DEF_MAX_LUNS; |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 520 | static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 521 | static atomic_t retired_max_queue; /* if > 0 then was prior max_queue */ |
| 522 | static int scsi_debug_ndelay = DEF_NDELAY; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 523 | static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 524 | static int scsi_debug_no_uld = 0; |
| 525 | static int scsi_debug_num_parts = DEF_NUM_PARTS; |
| 526 | static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 527 | static int scsi_debug_opt_blks = DEF_OPT_BLKS; |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 528 | static int scsi_debug_opts = DEF_OPTS; |
| 529 | static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP; |
| 530 | static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ |
| 531 | static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; |
| 532 | static int scsi_debug_sector_size = DEF_SECTOR_SIZE; |
| 533 | static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; |
| 534 | static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; |
| 535 | static unsigned int scsi_debug_lbpu = DEF_LBPU; |
| 536 | static unsigned int scsi_debug_lbpws = DEF_LBPWS; |
| 537 | static unsigned int scsi_debug_lbpws10 = DEF_LBPWS10; |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 538 | static unsigned int scsi_debug_lbprz = DEF_LBPRZ; |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 539 | static unsigned int scsi_debug_unmap_alignment = DEF_UNMAP_ALIGNMENT; |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 540 | static unsigned int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY; |
| 541 | static unsigned int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS; |
| 542 | static unsigned int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC; |
| 543 | static unsigned int scsi_debug_write_same_length = DEF_WRITESAME_LENGTH; |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 544 | static bool scsi_debug_removable = DEF_REMOVABLE; |
Akinobu Mita | 0759c66 | 2014-02-26 22:57:04 +0900 | [diff] [blame] | 545 | static bool scsi_debug_clustering; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 546 | static bool scsi_debug_host_lock = DEF_HOST_LOCK; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 547 | static bool scsi_debug_strict = DEF_STRICT; |
Douglas Gilbert | 817fd66 | 2014-11-24 20:18:02 -0500 | [diff] [blame] | 548 | static bool sdebug_any_injecting_opt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 550 | static atomic_t sdebug_cmnd_count; |
| 551 | static atomic_t sdebug_completions; |
| 552 | static atomic_t sdebug_a_tsf; /* counter of 'almost' TSFs */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
| 554 | #define DEV_READONLY(TGT) (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 556 | static unsigned int sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | static sector_t sdebug_capacity; /* in sectors */ |
| 558 | |
| 559 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages |
| 560 | may still need them */ |
| 561 | static int sdebug_heads; /* heads per disk */ |
| 562 | static int sdebug_cylinders_per; /* cylinders per surface */ |
| 563 | static int sdebug_sectors_per; /* sectors per cylinder */ |
| 564 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | #define SDEBUG_MAX_PARTS 4 |
| 566 | |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 567 | #define SCSI_DEBUG_MAX_CMD_LEN 32 |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 568 | |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 569 | static unsigned int scsi_debug_lbp(void) |
| 570 | { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 571 | return ((0 == scsi_debug_fake_rw) && |
| 572 | (scsi_debug_lbpu | scsi_debug_lbpws | scsi_debug_lbpws10)); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 573 | } |
| 574 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | struct sdebug_dev_info { |
| 576 | struct list_head dev_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | unsigned int channel; |
| 578 | unsigned int target; |
Hannes Reinecke | 9cb78c1 | 2014-06-25 15:27:36 +0200 | [diff] [blame] | 579 | u64 lun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | struct sdebug_host_info *sdbg_host; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 581 | unsigned long uas_bm[1]; |
| 582 | atomic_t num_in_q; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 583 | char stopped; /* TODO: should be atomic */ |
| 584 | bool used; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | }; |
| 586 | |
| 587 | struct sdebug_host_info { |
| 588 | struct list_head host_list; |
| 589 | struct Scsi_Host *shost; |
| 590 | struct device dev; |
| 591 | struct list_head dev_info_list; |
| 592 | }; |
| 593 | |
| 594 | #define to_sdebug_host(d) \ |
| 595 | container_of(d, struct sdebug_host_info, dev) |
| 596 | |
| 597 | static LIST_HEAD(sdebug_host_list); |
| 598 | static DEFINE_SPINLOCK(sdebug_host_list_lock); |
| 599 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 600 | |
| 601 | struct sdebug_hrtimer { /* ... is derived from hrtimer */ |
| 602 | struct hrtimer hrt; /* must be first element */ |
| 603 | int qa_indx; |
| 604 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | |
| 606 | struct sdebug_queued_cmd { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 607 | /* in_use flagged by a bit in queued_in_use_bm[] */ |
| 608 | struct timer_list *cmnd_timerp; |
| 609 | struct tasklet_struct *tletp; |
| 610 | struct sdebug_hrtimer *sd_hrtp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | struct scsi_cmnd * a_cmnd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | }; |
| 613 | static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 614 | static unsigned long queued_in_use_bm[SCSI_DEBUG_CANQUEUE_WORDS]; |
| 615 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | static unsigned char * fake_storep; /* ramdisk storage */ |
Akinobu Mita | e18d8be | 2013-06-29 17:59:18 +0900 | [diff] [blame] | 618 | static struct sd_dif_tuple *dif_storep; /* protection info */ |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 619 | static void *map_storep; /* provisioning map */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 621 | static unsigned long map_size; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 622 | static int num_aborts; |
| 623 | static int num_dev_resets; |
| 624 | static int num_target_resets; |
| 625 | static int num_bus_resets; |
| 626 | static int num_host_resets; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 627 | static int dix_writes; |
| 628 | static int dix_reads; |
| 629 | static int dif_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | |
| 631 | static DEFINE_SPINLOCK(queued_arr_lock); |
| 632 | static DEFINE_RWLOCK(atomic_rw); |
| 633 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 634 | static char sdebug_proc_name[] = MY_NAME; |
| 635 | static const char *my_name = MY_NAME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | static struct bus_type pseudo_lld_bus; |
| 638 | |
| 639 | static struct device_driver sdebug_driverfs_driver = { |
| 640 | .name = sdebug_proc_name, |
| 641 | .bus = &pseudo_lld_bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | }; |
| 643 | |
| 644 | static const int check_condition_result = |
| 645 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
| 646 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 647 | static const int illegal_condition_result = |
| 648 | (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; |
| 649 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 650 | static const int device_qfull_result = |
| 651 | (DID_OK << 16) | (COMMAND_COMPLETE << 8) | SAM_STAT_TASK_SET_FULL; |
| 652 | |
| 653 | static unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, |
| 654 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, |
| 655 | 0, 0, 0, 0}; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 656 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
| 657 | 0, 0, 0x2, 0x4b}; |
| 658 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 659 | 0, 0, 0x0, 0x0}; |
| 660 | |
Akinobu Mita | 14faa94 | 2013-09-18 21:27:24 +0900 | [diff] [blame] | 661 | static void *fake_store(unsigned long long lba) |
| 662 | { |
| 663 | lba = do_div(lba, sdebug_store_sectors); |
| 664 | |
| 665 | return fake_storep + lba * scsi_debug_sector_size; |
| 666 | } |
| 667 | |
| 668 | static struct sd_dif_tuple *dif_store(sector_t sector) |
| 669 | { |
| 670 | sector = do_div(sector, sdebug_store_sectors); |
| 671 | |
| 672 | return dif_storep + sector; |
| 673 | } |
| 674 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | static int sdebug_add_adapter(void); |
| 676 | static void sdebug_remove_adapter(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 678 | static void sdebug_max_tgts_luns(void) |
| 679 | { |
| 680 | struct sdebug_host_info *sdbg_host; |
| 681 | struct Scsi_Host *hpnt; |
| 682 | |
| 683 | spin_lock(&sdebug_host_list_lock); |
| 684 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
| 685 | hpnt = sdbg_host->shost; |
| 686 | if ((hpnt->this_id >= 0) && |
| 687 | (scsi_debug_num_tgts > hpnt->this_id)) |
| 688 | hpnt->max_id = scsi_debug_num_tgts + 1; |
| 689 | else |
| 690 | hpnt->max_id = scsi_debug_num_tgts; |
| 691 | /* scsi_debug_max_luns; */ |
| 692 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; |
| 693 | } |
| 694 | spin_unlock(&sdebug_host_list_lock); |
| 695 | } |
| 696 | |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 697 | enum sdeb_cmd_data {SDEB_IN_DATA = 0, SDEB_IN_CDB = 1}; |
| 698 | |
| 699 | /* Set in_bit to -1 to indicate no bit position of invalid field */ |
| 700 | static void |
| 701 | mk_sense_invalid_fld(struct scsi_cmnd *scp, enum sdeb_cmd_data c_d, |
| 702 | int in_byte, int in_bit) |
| 703 | { |
| 704 | unsigned char *sbuff; |
| 705 | u8 sks[4]; |
| 706 | int sl, asc; |
| 707 | |
| 708 | sbuff = scp->sense_buffer; |
| 709 | if (!sbuff) { |
| 710 | sdev_printk(KERN_ERR, scp->device, |
| 711 | "%s: sense_buffer is NULL\n", __func__); |
| 712 | return; |
| 713 | } |
| 714 | asc = c_d ? INVALID_FIELD_IN_CDB : INVALID_FIELD_IN_PARAM_LIST; |
| 715 | memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); |
| 716 | scsi_build_sense_buffer(scsi_debug_dsense, sbuff, ILLEGAL_REQUEST, |
| 717 | asc, 0); |
| 718 | memset(sks, 0, sizeof(sks)); |
| 719 | sks[0] = 0x80; |
| 720 | if (c_d) |
| 721 | sks[0] |= 0x40; |
| 722 | if (in_bit >= 0) { |
| 723 | sks[0] |= 0x8; |
| 724 | sks[0] |= 0x7 & in_bit; |
| 725 | } |
| 726 | put_unaligned_be16(in_byte, sks + 1); |
| 727 | if (scsi_debug_dsense) { |
| 728 | sl = sbuff[7] + 8; |
| 729 | sbuff[7] = sl; |
| 730 | sbuff[sl] = 0x2; |
| 731 | sbuff[sl + 1] = 0x6; |
| 732 | memcpy(sbuff + sl + 4, sks, 3); |
| 733 | } else |
| 734 | memcpy(sbuff + 15, sks, 3); |
| 735 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| 736 | sdev_printk(KERN_INFO, scp->device, "%s: [sense_key,asc,ascq" |
| 737 | "]: [0x5,0x%x,0x0] %c byte=%d, bit=%d\n", |
| 738 | my_name, asc, c_d ? 'C' : 'D', in_byte, in_bit); |
| 739 | } |
| 740 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 741 | static void mk_sense_buffer(struct scsi_cmnd *scp, int key, int asc, int asq) |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 742 | { |
| 743 | unsigned char *sbuff; |
| 744 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 745 | sbuff = scp->sense_buffer; |
| 746 | if (!sbuff) { |
| 747 | sdev_printk(KERN_ERR, scp->device, |
| 748 | "%s: sense_buffer is NULL\n", __func__); |
| 749 | return; |
| 750 | } |
| 751 | memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 752 | |
| 753 | scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); |
| 754 | |
| 755 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 756 | sdev_printk(KERN_INFO, scp->device, |
| 757 | "%s: [sense_key,asc,ascq]: [0x%x,0x%x,0x%x]\n", |
| 758 | my_name, key, asc, asq); |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 759 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 761 | static void |
| 762 | mk_sense_invalid_opcode(struct scsi_cmnd *scp) |
| 763 | { |
| 764 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_OPCODE, 0); |
| 765 | } |
| 766 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
| 768 | { |
| 769 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 770 | if (0x1261 == cmd) |
| 771 | sdev_printk(KERN_INFO, dev, |
| 772 | "%s: BLKFLSBUF [0x1261]\n", __func__); |
| 773 | else if (0x5331 == cmd) |
| 774 | sdev_printk(KERN_INFO, dev, |
| 775 | "%s: CDROM_GET_CAPABILITY [0x5331]\n", |
| 776 | __func__); |
| 777 | else |
| 778 | sdev_printk(KERN_INFO, dev, "%s: cmd=0x%x\n", |
| 779 | __func__, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | } |
| 781 | return -EINVAL; |
| 782 | /* return -ENOTTY; // correct return but upsets fdisk */ |
| 783 | } |
| 784 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 785 | static int check_readiness(struct scsi_cmnd *SCpnt, int uas_only, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 786 | struct sdebug_dev_info * devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 788 | int k; |
| 789 | bool debug = !!(SCSI_DEBUG_OPT_NOISE & scsi_debug_opts); |
| 790 | |
| 791 | k = find_first_bit(devip->uas_bm, SDEBUG_NUM_UAS); |
| 792 | if (k != SDEBUG_NUM_UAS) { |
| 793 | const char *cp = NULL; |
| 794 | |
| 795 | switch (k) { |
| 796 | case SDEBUG_UA_POR: |
| 797 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, |
| 798 | UA_RESET_ASC, POWER_ON_RESET_ASCQ); |
| 799 | if (debug) |
| 800 | cp = "power on reset"; |
| 801 | break; |
| 802 | case SDEBUG_UA_BUS_RESET: |
| 803 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, |
| 804 | UA_RESET_ASC, BUS_RESET_ASCQ); |
| 805 | if (debug) |
| 806 | cp = "bus reset"; |
| 807 | break; |
| 808 | case SDEBUG_UA_MODE_CHANGED: |
| 809 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, |
| 810 | UA_CHANGED_ASC, MODE_CHANGED_ASCQ); |
| 811 | if (debug) |
| 812 | cp = "mode parameters changed"; |
| 813 | break; |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 814 | case SDEBUG_UA_CAPACITY_CHANGED: |
| 815 | mk_sense_buffer(SCpnt, UNIT_ATTENTION, |
| 816 | UA_CHANGED_ASC, CAPACITY_CHANGED_ASCQ); |
| 817 | if (debug) |
| 818 | cp = "capacity data changed"; |
Ewan D. Milne | f49accf | 2014-12-04 11:49:25 -0500 | [diff] [blame] | 819 | break; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 820 | default: |
| 821 | pr_warn("%s: unexpected unit attention code=%d\n", |
| 822 | __func__, k); |
| 823 | if (debug) |
| 824 | cp = "unknown"; |
| 825 | break; |
| 826 | } |
| 827 | clear_bit(k, devip->uas_bm); |
| 828 | if (debug) |
| 829 | sdev_printk(KERN_INFO, SCpnt->device, |
| 830 | "%s reports: Unit attention: %s\n", |
| 831 | my_name, cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | return check_condition_result; |
| 833 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 834 | if ((UAS_TUR == uas_only) && devip->stopped) { |
| 835 | mk_sense_buffer(SCpnt, NOT_READY, LOGICAL_UNIT_NOT_READY, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 836 | 0x2); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 837 | if (debug) |
| 838 | sdev_printk(KERN_INFO, SCpnt->device, |
| 839 | "%s reports: Not ready: %s\n", my_name, |
| 840 | "initializing command required"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 841 | return check_condition_result; |
| 842 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | return 0; |
| 844 | } |
| 845 | |
| 846 | /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 847 | 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] | 848 | int arr_len) |
| 849 | { |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 850 | int act_len; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 851 | struct scsi_data_buffer *sdb = scsi_in(scp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 853 | if (!sdb->length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | return 0; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 855 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | return (DID_ERROR << 16); |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 857 | |
| 858 | act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, |
| 859 | arr, arr_len); |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 860 | sdb->resid = scsi_bufflen(scp) - act_len; |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 861 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | return 0; |
| 863 | } |
| 864 | |
| 865 | /* Returns number of bytes fetched into 'arr' or -1 if error. */ |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 866 | static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
| 867 | int arr_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | { |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 869 | if (!scsi_bufflen(scp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | return 0; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 871 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | return -1; |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 873 | |
| 874 | return scsi_sg_copy_to_buffer(scp, arr, arr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | } |
| 876 | |
| 877 | |
| 878 | static const char * inq_vendor_id = "Linux "; |
| 879 | static const char * inq_product_id = "scsi_debug "; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 880 | static const char *inq_product_rev = "0184"; /* version less '.' */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 882 | /* Device identification VPD page. Returns number of bytes placed in arr */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 883 | static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
| 884 | int target_dev_id, int dev_id_num, |
| 885 | const char * dev_id_str, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 886 | int dev_id_str_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 888 | int num, port_a; |
| 889 | char b[32]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 891 | port_a = target_dev_id + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | /* T10 vendor identifier field format (faked) */ |
| 893 | arr[0] = 0x2; /* ASCII */ |
| 894 | arr[1] = 0x1; |
| 895 | arr[2] = 0x0; |
| 896 | memcpy(&arr[4], inq_vendor_id, 8); |
| 897 | memcpy(&arr[12], inq_product_id, 16); |
| 898 | memcpy(&arr[28], dev_id_str, dev_id_str_len); |
| 899 | num = 8 + 16 + dev_id_str_len; |
| 900 | arr[3] = num; |
| 901 | num += 4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 902 | if (dev_id_num >= 0) { |
| 903 | /* NAA-5, Logical unit identifier (binary) */ |
| 904 | arr[num++] = 0x1; /* binary (not necessarily sas) */ |
| 905 | arr[num++] = 0x3; /* PIV=0, lu, naa */ |
| 906 | arr[num++] = 0x0; |
| 907 | arr[num++] = 0x8; |
| 908 | arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ |
| 909 | arr[num++] = 0x33; |
| 910 | arr[num++] = 0x33; |
| 911 | arr[num++] = 0x30; |
| 912 | arr[num++] = (dev_id_num >> 24); |
| 913 | arr[num++] = (dev_id_num >> 16) & 0xff; |
| 914 | arr[num++] = (dev_id_num >> 8) & 0xff; |
| 915 | arr[num++] = dev_id_num & 0xff; |
| 916 | /* Target relative port number */ |
| 917 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 918 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ |
| 919 | arr[num++] = 0x0; /* reserved */ |
| 920 | arr[num++] = 0x4; /* length */ |
| 921 | arr[num++] = 0x0; /* reserved */ |
| 922 | arr[num++] = 0x0; /* reserved */ |
| 923 | arr[num++] = 0x0; |
| 924 | arr[num++] = 0x1; /* relative port A */ |
| 925 | } |
| 926 | /* NAA-5, Target port identifier */ |
| 927 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 928 | arr[num++] = 0x93; /* piv=1, target port, naa */ |
| 929 | arr[num++] = 0x0; |
| 930 | arr[num++] = 0x8; |
| 931 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| 932 | arr[num++] = 0x22; |
| 933 | arr[num++] = 0x22; |
| 934 | arr[num++] = 0x20; |
| 935 | arr[num++] = (port_a >> 24); |
| 936 | arr[num++] = (port_a >> 16) & 0xff; |
| 937 | arr[num++] = (port_a >> 8) & 0xff; |
| 938 | arr[num++] = port_a & 0xff; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 939 | /* NAA-5, Target port group identifier */ |
| 940 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 941 | arr[num++] = 0x95; /* piv=1, target port group id */ |
| 942 | arr[num++] = 0x0; |
| 943 | arr[num++] = 0x4; |
| 944 | arr[num++] = 0; |
| 945 | arr[num++] = 0; |
| 946 | arr[num++] = (port_group_id >> 8) & 0xff; |
| 947 | arr[num++] = port_group_id & 0xff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 948 | /* NAA-5, Target device identifier */ |
| 949 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 950 | arr[num++] = 0xa3; /* piv=1, target device, naa */ |
| 951 | arr[num++] = 0x0; |
| 952 | arr[num++] = 0x8; |
| 953 | arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| 954 | arr[num++] = 0x22; |
| 955 | arr[num++] = 0x22; |
| 956 | arr[num++] = 0x20; |
| 957 | arr[num++] = (target_dev_id >> 24); |
| 958 | arr[num++] = (target_dev_id >> 16) & 0xff; |
| 959 | arr[num++] = (target_dev_id >> 8) & 0xff; |
| 960 | arr[num++] = target_dev_id & 0xff; |
| 961 | /* SCSI name string: Target device identifier */ |
| 962 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ |
| 963 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ |
| 964 | arr[num++] = 0x0; |
| 965 | arr[num++] = 24; |
| 966 | memcpy(arr + num, "naa.52222220", 12); |
| 967 | num += 12; |
| 968 | snprintf(b, sizeof(b), "%08X", target_dev_id); |
| 969 | memcpy(arr + num, b, 8); |
| 970 | num += 8; |
| 971 | memset(arr + num, 0, 4); |
| 972 | num += 4; |
| 973 | return num; |
| 974 | } |
| 975 | |
| 976 | |
| 977 | static unsigned char vpd84_data[] = { |
| 978 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, |
| 979 | 0x22,0x22,0x22,0x0,0xbb,0x1, |
| 980 | 0x22,0x22,0x22,0x0,0xbb,0x2, |
| 981 | }; |
| 982 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 983 | /* Software interface identification VPD page */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 984 | static int inquiry_evpd_84(unsigned char * arr) |
| 985 | { |
| 986 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); |
| 987 | return sizeof(vpd84_data); |
| 988 | } |
| 989 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 990 | /* Management network addresses VPD page */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 991 | static int inquiry_evpd_85(unsigned char * arr) |
| 992 | { |
| 993 | int num = 0; |
| 994 | const char * na1 = "https://www.kernel.org/config"; |
| 995 | const char * na2 = "http://www.kernel.org/log"; |
| 996 | int plen, olen; |
| 997 | |
| 998 | arr[num++] = 0x1; /* lu, storage config */ |
| 999 | arr[num++] = 0x0; /* reserved */ |
| 1000 | arr[num++] = 0x0; |
| 1001 | olen = strlen(na1); |
| 1002 | plen = olen + 1; |
| 1003 | if (plen % 4) |
| 1004 | plen = ((plen / 4) + 1) * 4; |
| 1005 | arr[num++] = plen; /* length, null termianted, padded */ |
| 1006 | memcpy(arr + num, na1, olen); |
| 1007 | memset(arr + num + olen, 0, plen - olen); |
| 1008 | num += plen; |
| 1009 | |
| 1010 | arr[num++] = 0x4; /* lu, logging */ |
| 1011 | arr[num++] = 0x0; /* reserved */ |
| 1012 | arr[num++] = 0x0; |
| 1013 | olen = strlen(na2); |
| 1014 | plen = olen + 1; |
| 1015 | if (plen % 4) |
| 1016 | plen = ((plen / 4) + 1) * 4; |
| 1017 | arr[num++] = plen; /* length, null terminated, padded */ |
| 1018 | memcpy(arr + num, na2, olen); |
| 1019 | memset(arr + num + olen, 0, plen - olen); |
| 1020 | num += plen; |
| 1021 | |
| 1022 | return num; |
| 1023 | } |
| 1024 | |
| 1025 | /* SCSI ports VPD page */ |
| 1026 | static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) |
| 1027 | { |
| 1028 | int num = 0; |
| 1029 | int port_a, port_b; |
| 1030 | |
| 1031 | port_a = target_dev_id + 1; |
| 1032 | port_b = port_a + 1; |
| 1033 | arr[num++] = 0x0; /* reserved */ |
| 1034 | arr[num++] = 0x0; /* reserved */ |
| 1035 | arr[num++] = 0x0; |
| 1036 | arr[num++] = 0x1; /* relative port 1 (primary) */ |
| 1037 | memset(arr + num, 0, 6); |
| 1038 | num += 6; |
| 1039 | arr[num++] = 0x0; |
| 1040 | arr[num++] = 12; /* length tp descriptor */ |
| 1041 | /* naa-5 target port identifier (A) */ |
| 1042 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 1043 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 1044 | arr[num++] = 0x0; /* reserved */ |
| 1045 | arr[num++] = 0x8; /* length */ |
| 1046 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| 1047 | arr[num++] = 0x22; |
| 1048 | arr[num++] = 0x22; |
| 1049 | arr[num++] = 0x20; |
| 1050 | arr[num++] = (port_a >> 24); |
| 1051 | arr[num++] = (port_a >> 16) & 0xff; |
| 1052 | arr[num++] = (port_a >> 8) & 0xff; |
| 1053 | arr[num++] = port_a & 0xff; |
| 1054 | |
| 1055 | arr[num++] = 0x0; /* reserved */ |
| 1056 | arr[num++] = 0x0; /* reserved */ |
| 1057 | arr[num++] = 0x0; |
| 1058 | arr[num++] = 0x2; /* relative port 2 (secondary) */ |
| 1059 | memset(arr + num, 0, 6); |
| 1060 | num += 6; |
| 1061 | arr[num++] = 0x0; |
| 1062 | arr[num++] = 12; /* length tp descriptor */ |
| 1063 | /* naa-5 target port identifier (B) */ |
| 1064 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 1065 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 1066 | arr[num++] = 0x0; /* reserved */ |
| 1067 | arr[num++] = 0x8; /* length */ |
| 1068 | arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| 1069 | arr[num++] = 0x22; |
| 1070 | arr[num++] = 0x22; |
| 1071 | arr[num++] = 0x20; |
| 1072 | arr[num++] = (port_b >> 24); |
| 1073 | arr[num++] = (port_b >> 16) & 0xff; |
| 1074 | arr[num++] = (port_b >> 8) & 0xff; |
| 1075 | arr[num++] = port_b & 0xff; |
| 1076 | |
| 1077 | return num; |
| 1078 | } |
| 1079 | |
| 1080 | |
| 1081 | static unsigned char vpd89_data[] = { |
| 1082 | /* from 4th byte */ 0,0,0,0, |
| 1083 | 'l','i','n','u','x',' ',' ',' ', |
| 1084 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', |
| 1085 | '1','2','3','4', |
| 1086 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, |
| 1087 | 0xec,0,0,0, |
| 1088 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, |
| 1089 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, |
| 1090 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, |
| 1091 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, |
| 1092 | 0x53,0x41, |
| 1093 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 1094 | 0x20,0x20, |
| 1095 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 1096 | 0x10,0x80, |
| 1097 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, |
| 1098 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, |
| 1099 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, |
| 1100 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, |
| 1101 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, |
| 1102 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, |
| 1103 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, |
| 1104 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1105 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1106 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1107 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, |
| 1108 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, |
| 1109 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, |
| 1110 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, |
| 1111 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1112 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1113 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1114 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1115 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1116 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1117 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1118 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1119 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1120 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1121 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1122 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, |
| 1123 | }; |
| 1124 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1125 | /* ATA Information VPD page */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1126 | static int inquiry_evpd_89(unsigned char * arr) |
| 1127 | { |
| 1128 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); |
| 1129 | return sizeof(vpd89_data); |
| 1130 | } |
| 1131 | |
| 1132 | |
| 1133 | static unsigned char vpdb0_data[] = { |
Douglas Gilbert | 1e49f78 | 2009-10-29 01:48:31 -0400 | [diff] [blame] | 1134 | /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64, |
| 1135 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1136 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1137 | 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] | 1138 | }; |
| 1139 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1140 | /* Block limits VPD page (SBC-3) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1141 | static int inquiry_evpd_b0(unsigned char * arr) |
| 1142 | { |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 1143 | unsigned int gran; |
| 1144 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1145 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1146 | |
| 1147 | /* Optimal transfer length granularity */ |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 1148 | gran = 1 << scsi_debug_physblk_exp; |
| 1149 | arr[2] = (gran >> 8) & 0xff; |
| 1150 | arr[3] = gran & 0xff; |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1151 | |
| 1152 | /* Maximum Transfer Length */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1153 | if (sdebug_store_sectors > 0x400) { |
| 1154 | arr[4] = (sdebug_store_sectors >> 24) & 0xff; |
| 1155 | arr[5] = (sdebug_store_sectors >> 16) & 0xff; |
| 1156 | arr[6] = (sdebug_store_sectors >> 8) & 0xff; |
| 1157 | arr[7] = sdebug_store_sectors & 0xff; |
| 1158 | } |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1159 | |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1160 | /* Optimal Transfer Length */ |
| 1161 | put_unaligned_be32(scsi_debug_opt_blks, &arr[8]); |
| 1162 | |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 1163 | if (scsi_debug_lbpu) { |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1164 | /* Maximum Unmap LBA Count */ |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1165 | put_unaligned_be32(scsi_debug_unmap_max_blocks, &arr[16]); |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1166 | |
| 1167 | /* Maximum Unmap Block Descriptor Count */ |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1168 | put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]); |
| 1169 | } |
| 1170 | |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1171 | /* Unmap Granularity Alignment */ |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1172 | if (scsi_debug_unmap_alignment) { |
| 1173 | put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]); |
| 1174 | arr[28] |= 0x80; /* UGAVALID */ |
| 1175 | } |
| 1176 | |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1177 | /* Optimal Unmap Granularity */ |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1178 | put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]); |
| 1179 | |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 1180 | /* Maximum WRITE SAME Length */ |
| 1181 | put_unaligned_be64(scsi_debug_write_same_length, &arr[32]); |
| 1182 | |
| 1183 | return 0x3c; /* Mandatory page length for Logical Block Provisioning */ |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1184 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1185 | return sizeof(vpdb0_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | } |
| 1187 | |
Douglas Gilbert | 1e49f78 | 2009-10-29 01:48:31 -0400 | [diff] [blame] | 1188 | /* Block device characteristics VPD page (SBC-3) */ |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 1189 | static int inquiry_evpd_b1(unsigned char *arr) |
| 1190 | { |
| 1191 | memset(arr, 0, 0x3c); |
| 1192 | arr[0] = 0; |
Douglas Gilbert | 1e49f78 | 2009-10-29 01:48:31 -0400 | [diff] [blame] | 1193 | arr[1] = 1; /* non rotating medium (e.g. solid state) */ |
| 1194 | arr[2] = 0; |
| 1195 | arr[3] = 5; /* less than 1.8" */ |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 1196 | |
| 1197 | return 0x3c; |
| 1198 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 1200 | /* Logical block provisioning VPD page (SBC-3) */ |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1201 | static int inquiry_evpd_b2(unsigned char *arr) |
| 1202 | { |
Martin K. Petersen | 3f0bc3b | 2012-03-08 10:48:29 -0500 | [diff] [blame] | 1203 | memset(arr, 0, 0x4); |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1204 | arr[0] = 0; /* threshold exponent */ |
| 1205 | |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 1206 | if (scsi_debug_lbpu) |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1207 | arr[1] = 1 << 7; |
| 1208 | |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 1209 | if (scsi_debug_lbpws) |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1210 | arr[1] |= 1 << 6; |
| 1211 | |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 1212 | if (scsi_debug_lbpws10) |
| 1213 | arr[1] |= 1 << 5; |
| 1214 | |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 1215 | if (scsi_debug_lbprz) |
| 1216 | arr[1] |= 1 << 2; |
| 1217 | |
Martin K. Petersen | 3f0bc3b | 2012-03-08 10:48:29 -0500 | [diff] [blame] | 1218 | return 0x4; |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1219 | } |
| 1220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | #define SDEBUG_LONG_INQ_SZ 96 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1222 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1224 | static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | { |
| 1226 | unsigned char pq_pdt; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1227 | unsigned char * arr; |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 1228 | unsigned char *cmd = scp->cmnd; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1229 | int alloc_len, n, ret; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1230 | bool have_wlun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | |
| 1232 | alloc_len = (cmd[3] << 8) + cmd[4]; |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 1233 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
| 1234 | if (! arr) |
| 1235 | return DID_REQUEUE << 16; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1236 | have_wlun = (scp->device->lun == SAM2_WLUN_REPORT_LUNS); |
| 1237 | if (have_wlun) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1238 | pq_pdt = 0x1e; /* present, wlun */ |
| 1239 | else if (scsi_debug_no_lun_0 && (0 == devip->lun)) |
| 1240 | pq_pdt = 0x7f; /* not present, no device type */ |
| 1241 | else |
| 1242 | pq_pdt = (scsi_debug_ptype & 0x1f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | arr[0] = pq_pdt; |
| 1244 | if (0x2 & cmd[1]) { /* CMDDT bit set */ |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 1245 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 1); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1246 | kfree(arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | return check_condition_result; |
| 1248 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1249 | int lu_id_num, port_group_id, target_dev_id, len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1250 | char lu_id_str[6]; |
| 1251 | int host_no = devip->sdbg_host->shost->host_no; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1252 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1253 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
| 1254 | (devip->channel & 0x7f); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1255 | if (0 == scsi_debug_vpd_use_hostno) |
| 1256 | host_no = 0; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1257 | lu_id_num = have_wlun ? -1 : (((host_no + 1) * 2000) + |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1258 | (devip->target * 1000) + devip->lun); |
| 1259 | target_dev_id = ((host_no + 1) * 2000) + |
| 1260 | (devip->target * 1000) - 3; |
| 1261 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | if (0 == cmd[2]) { /* supported vital product data pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1263 | arr[1] = cmd[2]; /*sanity */ |
| 1264 | n = 4; |
| 1265 | arr[n++] = 0x0; /* this page */ |
| 1266 | arr[n++] = 0x80; /* unit serial number */ |
| 1267 | arr[n++] = 0x83; /* device identification */ |
| 1268 | arr[n++] = 0x84; /* software interface ident. */ |
| 1269 | arr[n++] = 0x85; /* management network addresses */ |
| 1270 | arr[n++] = 0x86; /* extended inquiry */ |
| 1271 | arr[n++] = 0x87; /* mode page policy */ |
| 1272 | arr[n++] = 0x88; /* SCSI ports */ |
| 1273 | arr[n++] = 0x89; /* ATA information */ |
| 1274 | arr[n++] = 0xb0; /* Block limits (SBC) */ |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 1275 | arr[n++] = 0xb1; /* Block characteristics (SBC) */ |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 1276 | if (scsi_debug_lbp()) /* Logical Block Prov. (SBC) */ |
| 1277 | arr[n++] = 0xb2; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1278 | arr[3] = n - 4; /* number of supported VPD pages */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1280 | arr[1] = cmd[2]; /*sanity */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | arr[3] = len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1282 | memcpy(&arr[4], lu_id_str, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | } else if (0x83 == cmd[2]) { /* device identification */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1284 | arr[1] = cmd[2]; /*sanity */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1285 | arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
| 1286 | target_dev_id, lu_id_num, |
| 1287 | lu_id_str, len); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1288 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
| 1289 | arr[1] = cmd[2]; /*sanity */ |
| 1290 | arr[3] = inquiry_evpd_84(&arr[4]); |
| 1291 | } else if (0x85 == cmd[2]) { /* Management network addresses */ |
| 1292 | arr[1] = cmd[2]; /*sanity */ |
| 1293 | arr[3] = inquiry_evpd_85(&arr[4]); |
| 1294 | } else if (0x86 == cmd[2]) { /* extended inquiry */ |
| 1295 | arr[1] = cmd[2]; /*sanity */ |
| 1296 | arr[3] = 0x3c; /* number of following entries */ |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1297 | if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) |
| 1298 | arr[4] = 0x4; /* SPT: GRD_CHK:1 */ |
| 1299 | else if (scsi_debug_dif) |
| 1300 | arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ |
| 1301 | else |
| 1302 | arr[4] = 0x0; /* no protection stuff */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1303 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
| 1304 | } else if (0x87 == cmd[2]) { /* mode page policy */ |
| 1305 | arr[1] = cmd[2]; /*sanity */ |
| 1306 | arr[3] = 0x8; /* number of following entries */ |
| 1307 | arr[4] = 0x2; /* disconnect-reconnect mp */ |
| 1308 | arr[6] = 0x80; /* mlus, shared */ |
| 1309 | arr[8] = 0x18; /* protocol specific lu */ |
| 1310 | arr[10] = 0x82; /* mlus, per initiator port */ |
| 1311 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ |
| 1312 | arr[1] = cmd[2]; /*sanity */ |
| 1313 | arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); |
| 1314 | } else if (0x89 == cmd[2]) { /* ATA information */ |
| 1315 | arr[1] = cmd[2]; /*sanity */ |
| 1316 | n = inquiry_evpd_89(&arr[4]); |
| 1317 | arr[2] = (n >> 8); |
| 1318 | arr[3] = (n & 0xff); |
| 1319 | } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ |
| 1320 | arr[1] = cmd[2]; /*sanity */ |
| 1321 | arr[3] = inquiry_evpd_b0(&arr[4]); |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 1322 | } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */ |
| 1323 | arr[1] = cmd[2]; /*sanity */ |
| 1324 | arr[3] = inquiry_evpd_b1(&arr[4]); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 1325 | } else if (0xb2 == cmd[2]) { /* Logical Block Prov. (SBC) */ |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1326 | arr[1] = cmd[2]; /*sanity */ |
| 1327 | arr[3] = inquiry_evpd_b2(&arr[4]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1328 | } else { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 1329 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1330 | kfree(arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | return check_condition_result; |
| 1332 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1333 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1334 | ret = fill_from_dev_buffer(scp, arr, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1335 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1336 | kfree(arr); |
| 1337 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | } |
| 1339 | /* drops through here for a standard inquiry */ |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 1340 | arr[1] = scsi_debug_removable ? 0x80 : 0; /* Removable disk */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | arr[2] = scsi_debug_scsi_level; |
| 1342 | arr[3] = 2; /* response_data_format==2 */ |
| 1343 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1344 | arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1345 | if (0 == scsi_debug_vpd_use_hostno) |
| 1346 | arr[5] = 0x10; /* claim: implicit TGPS */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1347 | arr[6] = 0x10; /* claim: MultiP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1349 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | memcpy(&arr[8], inq_vendor_id, 8); |
| 1351 | memcpy(&arr[16], inq_product_id, 16); |
| 1352 | memcpy(&arr[32], inq_product_rev, 4); |
| 1353 | /* version descriptors (2 bytes each) follow */ |
Douglas Gilbert | e46b034 | 2014-08-05 12:21:53 +0200 | [diff] [blame] | 1354 | arr[58] = 0x0; arr[59] = 0xa2; /* SAM-5 rev 4 */ |
| 1355 | arr[60] = 0x4; arr[61] = 0x68; /* SPC-4 rev 37 */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1356 | n = 62; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | if (scsi_debug_ptype == 0) { |
Douglas Gilbert | e46b034 | 2014-08-05 12:21:53 +0200 | [diff] [blame] | 1358 | arr[n++] = 0x4; arr[n++] = 0xc5; /* SBC-4 rev 36 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | } else if (scsi_debug_ptype == 1) { |
Douglas Gilbert | e46b034 | 2014-08-05 12:21:53 +0200 | [diff] [blame] | 1360 | arr[n++] = 0x5; arr[n++] = 0x25; /* SSC-4 rev 3 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | } |
Douglas Gilbert | e46b034 | 2014-08-05 12:21:53 +0200 | [diff] [blame] | 1362 | arr[n++] = 0x20; arr[n++] = 0xe6; /* SPL-3 rev 7 */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1363 | ret = fill_from_dev_buffer(scp, arr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1365 | kfree(arr); |
| 1366 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | } |
| 1368 | |
| 1369 | static int resp_requests(struct scsi_cmnd * scp, |
| 1370 | struct sdebug_dev_info * devip) |
| 1371 | { |
| 1372 | unsigned char * sbuff; |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 1373 | unsigned char *cmd = scp->cmnd; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1374 | unsigned char arr[SCSI_SENSE_BUFFERSIZE]; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1375 | bool dsense, want_dsense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | int len = 18; |
| 1377 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1378 | memset(arr, 0, sizeof(arr)); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1379 | dsense = !!(cmd[1] & 1); |
| 1380 | want_dsense = dsense || scsi_debug_dsense; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1381 | sbuff = scp->sense_buffer; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1382 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1383 | if (dsense) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1384 | arr[0] = 0x72; |
| 1385 | arr[1] = 0x0; /* NO_SENSE in sense_key */ |
| 1386 | arr[2] = THRESHOLD_EXCEEDED; |
| 1387 | arr[3] = 0xff; /* TEST set and MRIE==6 */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1388 | len = 8; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1389 | } else { |
| 1390 | arr[0] = 0x70; |
| 1391 | arr[2] = 0x0; /* NO_SENSE in sense_key */ |
| 1392 | arr[7] = 0xa; /* 18 byte sense buffer */ |
| 1393 | arr[12] = THRESHOLD_EXCEEDED; |
| 1394 | arr[13] = 0xff; /* TEST set and MRIE==6 */ |
| 1395 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1396 | } else { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1397 | memcpy(arr, sbuff, SCSI_SENSE_BUFFERSIZE); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1398 | if (arr[0] >= 0x70 && dsense == scsi_debug_dsense) |
| 1399 | ; /* have sense and formats match */ |
| 1400 | else if (arr[0] <= 0x70) { |
| 1401 | if (dsense) { |
| 1402 | memset(arr, 0, 8); |
| 1403 | arr[0] = 0x72; |
| 1404 | len = 8; |
| 1405 | } else { |
| 1406 | memset(arr, 0, 18); |
| 1407 | arr[0] = 0x70; |
| 1408 | arr[7] = 0xa; |
| 1409 | } |
| 1410 | } else if (dsense) { |
| 1411 | memset(arr, 0, 8); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1412 | arr[0] = 0x72; |
| 1413 | arr[1] = sbuff[2]; /* sense key */ |
| 1414 | arr[2] = sbuff[12]; /* asc */ |
| 1415 | arr[3] = sbuff[13]; /* ascq */ |
| 1416 | len = 8; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1417 | } else { |
| 1418 | memset(arr, 0, 18); |
| 1419 | arr[0] = 0x70; |
| 1420 | arr[2] = sbuff[1]; |
| 1421 | arr[7] = 0xa; |
| 1422 | arr[12] = sbuff[1]; |
| 1423 | arr[13] = sbuff[3]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1424 | } |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1425 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1426 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1427 | mk_sense_buffer(scp, 0, NO_ADDITIONAL_SENSE, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | return fill_from_dev_buffer(scp, arr, len); |
| 1429 | } |
| 1430 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1431 | static int resp_start_stop(struct scsi_cmnd * scp, |
| 1432 | struct sdebug_dev_info * devip) |
| 1433 | { |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 1434 | unsigned char *cmd = scp->cmnd; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1435 | int power_cond, start; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1436 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1437 | power_cond = (cmd[4] & 0xf0) >> 4; |
| 1438 | if (power_cond) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 1439 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, 7); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1440 | return check_condition_result; |
| 1441 | } |
| 1442 | start = cmd[4] & 1; |
| 1443 | if (start == devip->stopped) |
| 1444 | devip->stopped = !start; |
| 1445 | return 0; |
| 1446 | } |
| 1447 | |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 1448 | static sector_t get_sdebug_capacity(void) |
| 1449 | { |
| 1450 | if (scsi_debug_virtual_gb > 0) |
Douglas Gilbert | 5447ed6 | 2010-04-25 12:30:23 +0200 | [diff] [blame] | 1451 | return (sector_t)scsi_debug_virtual_gb * |
| 1452 | (1073741824 / scsi_debug_sector_size); |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 1453 | else |
| 1454 | return sdebug_store_sectors; |
| 1455 | } |
| 1456 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | #define SDEBUG_READCAP_ARR_SZ 8 |
| 1458 | static int resp_readcap(struct scsi_cmnd * scp, |
| 1459 | struct sdebug_dev_info * devip) |
| 1460 | { |
| 1461 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1462 | unsigned int capac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1464 | /* following just in case virtual_gb changed */ |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 1465 | sdebug_capacity = get_sdebug_capacity(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1467 | if (sdebug_capacity < 0xffffffff) { |
| 1468 | capac = (unsigned int)sdebug_capacity - 1; |
| 1469 | arr[0] = (capac >> 24); |
| 1470 | arr[1] = (capac >> 16) & 0xff; |
| 1471 | arr[2] = (capac >> 8) & 0xff; |
| 1472 | arr[3] = capac & 0xff; |
| 1473 | } else { |
| 1474 | arr[0] = 0xff; |
| 1475 | arr[1] = 0xff; |
| 1476 | arr[2] = 0xff; |
| 1477 | arr[3] = 0xff; |
| 1478 | } |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1479 | arr[6] = (scsi_debug_sector_size >> 8) & 0xff; |
| 1480 | arr[7] = scsi_debug_sector_size & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1481 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
| 1482 | } |
| 1483 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1484 | #define SDEBUG_READCAP16_ARR_SZ 32 |
| 1485 | static int resp_readcap16(struct scsi_cmnd * scp, |
| 1486 | struct sdebug_dev_info * devip) |
| 1487 | { |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 1488 | unsigned char *cmd = scp->cmnd; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1489 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; |
| 1490 | unsigned long long capac; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1491 | int k, alloc_len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1492 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1493 | alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) |
| 1494 | + cmd[13]); |
| 1495 | /* following just in case virtual_gb changed */ |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 1496 | sdebug_capacity = get_sdebug_capacity(); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1497 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
| 1498 | capac = sdebug_capacity - 1; |
| 1499 | for (k = 0; k < 8; ++k, capac >>= 8) |
| 1500 | arr[7 - k] = capac & 0xff; |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1501 | arr[8] = (scsi_debug_sector_size >> 24) & 0xff; |
| 1502 | arr[9] = (scsi_debug_sector_size >> 16) & 0xff; |
| 1503 | arr[10] = (scsi_debug_sector_size >> 8) & 0xff; |
| 1504 | arr[11] = scsi_debug_sector_size & 0xff; |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 1505 | arr[13] = scsi_debug_physblk_exp & 0xf; |
| 1506 | arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1507 | |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 1508 | if (scsi_debug_lbp()) { |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 1509 | arr[14] |= 0x80; /* LBPME */ |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 1510 | if (scsi_debug_lbprz) |
| 1511 | arr[14] |= 0x40; /* LBPRZ */ |
| 1512 | } |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1513 | |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 1514 | arr[15] = scsi_debug_lowest_aligned & 0xff; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1515 | |
| 1516 | if (scsi_debug_dif) { |
| 1517 | arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */ |
| 1518 | arr[12] |= 1; /* PROT_EN */ |
| 1519 | } |
| 1520 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1521 | return fill_from_dev_buffer(scp, arr, |
| 1522 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); |
| 1523 | } |
| 1524 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1525 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
| 1526 | |
| 1527 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, |
| 1528 | struct sdebug_dev_info * devip) |
| 1529 | { |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 1530 | unsigned char *cmd = scp->cmnd; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1531 | unsigned char * arr; |
| 1532 | int host_no = devip->sdbg_host->shost->host_no; |
| 1533 | int n, ret, alen, rlen; |
| 1534 | int port_group_a, port_group_b, port_a, port_b; |
| 1535 | |
| 1536 | alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) |
| 1537 | + cmd[9]); |
| 1538 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 1539 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
| 1540 | if (! arr) |
| 1541 | return DID_REQUEUE << 16; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1542 | /* |
| 1543 | * EVPD page 0x88 states we have two ports, one |
| 1544 | * real and a fake port with no device connected. |
| 1545 | * So we create two port groups with one port each |
| 1546 | * and set the group with port B to unavailable. |
| 1547 | */ |
| 1548 | port_a = 0x1; /* relative port A */ |
| 1549 | port_b = 0x2; /* relative port B */ |
| 1550 | port_group_a = (((host_no + 1) & 0x7f) << 8) + |
| 1551 | (devip->channel & 0x7f); |
| 1552 | port_group_b = (((host_no + 1) & 0x7f) << 8) + |
| 1553 | (devip->channel & 0x7f) + 0x80; |
| 1554 | |
| 1555 | /* |
| 1556 | * The asymmetric access state is cycled according to the host_id. |
| 1557 | */ |
| 1558 | n = 4; |
| 1559 | if (0 == scsi_debug_vpd_use_hostno) { |
| 1560 | arr[n++] = host_no % 3; /* Asymm access state */ |
| 1561 | arr[n++] = 0x0F; /* claim: all states are supported */ |
| 1562 | } else { |
| 1563 | arr[n++] = 0x0; /* Active/Optimized path */ |
| 1564 | arr[n++] = 0x01; /* claim: only support active/optimized paths */ |
| 1565 | } |
| 1566 | arr[n++] = (port_group_a >> 8) & 0xff; |
| 1567 | arr[n++] = port_group_a & 0xff; |
| 1568 | arr[n++] = 0; /* Reserved */ |
| 1569 | arr[n++] = 0; /* Status code */ |
| 1570 | arr[n++] = 0; /* Vendor unique */ |
| 1571 | arr[n++] = 0x1; /* One port per group */ |
| 1572 | arr[n++] = 0; /* Reserved */ |
| 1573 | arr[n++] = 0; /* Reserved */ |
| 1574 | arr[n++] = (port_a >> 8) & 0xff; |
| 1575 | arr[n++] = port_a & 0xff; |
| 1576 | arr[n++] = 3; /* Port unavailable */ |
| 1577 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ |
| 1578 | arr[n++] = (port_group_b >> 8) & 0xff; |
| 1579 | arr[n++] = port_group_b & 0xff; |
| 1580 | arr[n++] = 0; /* Reserved */ |
| 1581 | arr[n++] = 0; /* Status code */ |
| 1582 | arr[n++] = 0; /* Vendor unique */ |
| 1583 | arr[n++] = 0x1; /* One port per group */ |
| 1584 | arr[n++] = 0; /* Reserved */ |
| 1585 | arr[n++] = 0; /* Reserved */ |
| 1586 | arr[n++] = (port_b >> 8) & 0xff; |
| 1587 | arr[n++] = port_b & 0xff; |
| 1588 | |
| 1589 | rlen = n - 4; |
| 1590 | arr[0] = (rlen >> 24) & 0xff; |
| 1591 | arr[1] = (rlen >> 16) & 0xff; |
| 1592 | arr[2] = (rlen >> 8) & 0xff; |
| 1593 | arr[3] = rlen & 0xff; |
| 1594 | |
| 1595 | /* |
| 1596 | * Return the smallest value of either |
| 1597 | * - The allocated length |
| 1598 | * - The constructed command length |
| 1599 | * - The maximum array size |
| 1600 | */ |
| 1601 | rlen = min(alen,n); |
| 1602 | ret = fill_from_dev_buffer(scp, arr, |
| 1603 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); |
| 1604 | kfree(arr); |
| 1605 | return ret; |
| 1606 | } |
| 1607 | |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 1608 | static int |
| 1609 | resp_rsup_opcodes(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
| 1610 | { |
| 1611 | bool rctd; |
| 1612 | u8 reporting_opts, req_opcode, sdeb_i, supp; |
| 1613 | u16 req_sa, u; |
| 1614 | u32 alloc_len, a_len; |
| 1615 | int k, offset, len, errsts, count, bump, na; |
| 1616 | const struct opcode_info_t *oip; |
| 1617 | const struct opcode_info_t *r_oip; |
| 1618 | u8 *arr; |
| 1619 | u8 *cmd = scp->cmnd; |
| 1620 | |
| 1621 | rctd = !!(cmd[2] & 0x80); |
| 1622 | reporting_opts = cmd[2] & 0x7; |
| 1623 | req_opcode = cmd[3]; |
| 1624 | req_sa = get_unaligned_be16(cmd + 4); |
| 1625 | alloc_len = get_unaligned_be32(cmd + 6); |
| 1626 | if (alloc_len < 4 && alloc_len > 0xffff) { |
| 1627 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); |
| 1628 | return check_condition_result; |
| 1629 | } |
| 1630 | if (alloc_len > 8192) |
| 1631 | a_len = 8192; |
| 1632 | else |
| 1633 | a_len = alloc_len; |
Sasha Levin | 99531e6 | 2015-01-17 17:47:37 -0500 | [diff] [blame] | 1634 | arr = kzalloc((a_len < 256) ? 320 : a_len + 64, GFP_ATOMIC); |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 1635 | if (NULL == arr) { |
| 1636 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, |
| 1637 | INSUFF_RES_ASCQ); |
| 1638 | return check_condition_result; |
| 1639 | } |
| 1640 | switch (reporting_opts) { |
| 1641 | case 0: /* all commands */ |
| 1642 | /* count number of commands */ |
| 1643 | for (count = 0, oip = opcode_info_arr; |
| 1644 | oip->num_attached != 0xff; ++oip) { |
| 1645 | if (F_INV_OP & oip->flags) |
| 1646 | continue; |
| 1647 | count += (oip->num_attached + 1); |
| 1648 | } |
| 1649 | bump = rctd ? 20 : 8; |
| 1650 | put_unaligned_be32(count * bump, arr); |
| 1651 | for (offset = 4, oip = opcode_info_arr; |
| 1652 | oip->num_attached != 0xff && offset < a_len; ++oip) { |
| 1653 | if (F_INV_OP & oip->flags) |
| 1654 | continue; |
| 1655 | na = oip->num_attached; |
| 1656 | arr[offset] = oip->opcode; |
| 1657 | put_unaligned_be16(oip->sa, arr + offset + 2); |
| 1658 | if (rctd) |
| 1659 | arr[offset + 5] |= 0x2; |
| 1660 | if (FF_SA & oip->flags) |
| 1661 | arr[offset + 5] |= 0x1; |
| 1662 | put_unaligned_be16(oip->len_mask[0], arr + offset + 6); |
| 1663 | if (rctd) |
| 1664 | put_unaligned_be16(0xa, arr + offset + 8); |
| 1665 | r_oip = oip; |
| 1666 | for (k = 0, oip = oip->arrp; k < na; ++k, ++oip) { |
| 1667 | if (F_INV_OP & oip->flags) |
| 1668 | continue; |
| 1669 | offset += bump; |
| 1670 | arr[offset] = oip->opcode; |
| 1671 | put_unaligned_be16(oip->sa, arr + offset + 2); |
| 1672 | if (rctd) |
| 1673 | arr[offset + 5] |= 0x2; |
| 1674 | if (FF_SA & oip->flags) |
| 1675 | arr[offset + 5] |= 0x1; |
| 1676 | put_unaligned_be16(oip->len_mask[0], |
| 1677 | arr + offset + 6); |
| 1678 | if (rctd) |
| 1679 | put_unaligned_be16(0xa, |
| 1680 | arr + offset + 8); |
| 1681 | } |
| 1682 | oip = r_oip; |
| 1683 | offset += bump; |
| 1684 | } |
| 1685 | break; |
| 1686 | case 1: /* one command: opcode only */ |
| 1687 | case 2: /* one command: opcode plus service action */ |
| 1688 | case 3: /* one command: if sa==0 then opcode only else opcode+sa */ |
| 1689 | sdeb_i = opcode_ind_arr[req_opcode]; |
| 1690 | oip = &opcode_info_arr[sdeb_i]; |
| 1691 | if (F_INV_OP & oip->flags) { |
| 1692 | supp = 1; |
| 1693 | offset = 4; |
| 1694 | } else { |
| 1695 | if (1 == reporting_opts) { |
| 1696 | if (FF_SA & oip->flags) { |
| 1697 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, |
| 1698 | 2, 2); |
| 1699 | kfree(arr); |
| 1700 | return check_condition_result; |
| 1701 | } |
| 1702 | req_sa = 0; |
| 1703 | } else if (2 == reporting_opts && |
| 1704 | 0 == (FF_SA & oip->flags)) { |
| 1705 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, -1); |
| 1706 | kfree(arr); /* point at requested sa */ |
| 1707 | return check_condition_result; |
| 1708 | } |
| 1709 | if (0 == (FF_SA & oip->flags) && |
| 1710 | req_opcode == oip->opcode) |
| 1711 | supp = 3; |
| 1712 | else if (0 == (FF_SA & oip->flags)) { |
| 1713 | na = oip->num_attached; |
| 1714 | for (k = 0, oip = oip->arrp; k < na; |
| 1715 | ++k, ++oip) { |
| 1716 | if (req_opcode == oip->opcode) |
| 1717 | break; |
| 1718 | } |
| 1719 | supp = (k >= na) ? 1 : 3; |
| 1720 | } else if (req_sa != oip->sa) { |
| 1721 | na = oip->num_attached; |
| 1722 | for (k = 0, oip = oip->arrp; k < na; |
| 1723 | ++k, ++oip) { |
| 1724 | if (req_sa == oip->sa) |
| 1725 | break; |
| 1726 | } |
| 1727 | supp = (k >= na) ? 1 : 3; |
| 1728 | } else |
| 1729 | supp = 3; |
| 1730 | if (3 == supp) { |
| 1731 | u = oip->len_mask[0]; |
| 1732 | put_unaligned_be16(u, arr + 2); |
| 1733 | arr[4] = oip->opcode; |
| 1734 | for (k = 1; k < u; ++k) |
| 1735 | arr[4 + k] = (k < 16) ? |
| 1736 | oip->len_mask[k] : 0xff; |
| 1737 | offset = 4 + u; |
| 1738 | } else |
| 1739 | offset = 4; |
| 1740 | } |
| 1741 | arr[1] = (rctd ? 0x80 : 0) | supp; |
| 1742 | if (rctd) { |
| 1743 | put_unaligned_be16(0xa, arr + offset); |
| 1744 | offset += 12; |
| 1745 | } |
| 1746 | break; |
| 1747 | default: |
| 1748 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 2); |
| 1749 | kfree(arr); |
| 1750 | return check_condition_result; |
| 1751 | } |
| 1752 | offset = (offset < a_len) ? offset : a_len; |
| 1753 | len = (offset < alloc_len) ? offset : alloc_len; |
| 1754 | errsts = fill_from_dev_buffer(scp, arr, len); |
| 1755 | kfree(arr); |
| 1756 | return errsts; |
| 1757 | } |
| 1758 | |
| 1759 | static int |
| 1760 | resp_rsup_tmfs(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
| 1761 | { |
| 1762 | bool repd; |
| 1763 | u32 alloc_len, len; |
| 1764 | u8 arr[16]; |
| 1765 | u8 *cmd = scp->cmnd; |
| 1766 | |
| 1767 | memset(arr, 0, sizeof(arr)); |
| 1768 | repd = !!(cmd[2] & 0x80); |
| 1769 | alloc_len = get_unaligned_be32(cmd + 6); |
| 1770 | if (alloc_len < 4) { |
| 1771 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); |
| 1772 | return check_condition_result; |
| 1773 | } |
| 1774 | arr[0] = 0xc8; /* ATS | ATSS | LURS */ |
| 1775 | arr[1] = 0x1; /* ITNRS */ |
| 1776 | if (repd) { |
| 1777 | arr[3] = 0xc; |
| 1778 | len = 16; |
| 1779 | } else |
| 1780 | len = 4; |
| 1781 | |
| 1782 | len = (len < alloc_len) ? len : alloc_len; |
| 1783 | return fill_from_dev_buffer(scp, arr, len); |
| 1784 | } |
| 1785 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1786 | /* <<Following mode page info copied from ST318451LW>> */ |
| 1787 | |
| 1788 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) |
| 1789 | { /* Read-Write Error Recovery page for mode_sense */ |
| 1790 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, |
| 1791 | 5, 0, 0xff, 0xff}; |
| 1792 | |
| 1793 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); |
| 1794 | if (1 == pcontrol) |
| 1795 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); |
| 1796 | return sizeof(err_recov_pg); |
| 1797 | } |
| 1798 | |
| 1799 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) |
| 1800 | { /* Disconnect-Reconnect page for mode_sense */ |
| 1801 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, |
| 1802 | 0, 0, 0, 0, 0, 0, 0, 0}; |
| 1803 | |
| 1804 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); |
| 1805 | if (1 == pcontrol) |
| 1806 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); |
| 1807 | return sizeof(disconnect_pg); |
| 1808 | } |
| 1809 | |
| 1810 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) |
| 1811 | { /* Format device page for mode_sense */ |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1812 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
| 1813 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1814 | 0, 0, 0, 0, 0x40, 0, 0, 0}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1815 | |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1816 | memcpy(p, format_pg, sizeof(format_pg)); |
| 1817 | p[10] = (sdebug_sectors_per >> 8) & 0xff; |
| 1818 | p[11] = sdebug_sectors_per & 0xff; |
| 1819 | p[12] = (scsi_debug_sector_size >> 8) & 0xff; |
| 1820 | p[13] = scsi_debug_sector_size & 0xff; |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 1821 | if (scsi_debug_removable) |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1822 | p[20] |= 0x20; /* should agree with INQUIRY */ |
| 1823 | if (1 == pcontrol) |
| 1824 | memset(p + 2, 0, sizeof(format_pg) - 2); |
| 1825 | return sizeof(format_pg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | } |
| 1827 | |
| 1828 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) |
| 1829 | { /* Caching page for mode_sense */ |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1830 | unsigned char ch_caching_pg[] = {/* 0x8, 18, */ 0x4, 0, 0, 0, 0, 0, |
| 1831 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; |
| 1832 | unsigned char d_caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1833 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; |
| 1834 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1835 | if (SCSI_DEBUG_OPT_N_WCE & scsi_debug_opts) |
| 1836 | caching_pg[2] &= ~0x4; /* set WCE=0 (default WCE=1) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1837 | memcpy(p, caching_pg, sizeof(caching_pg)); |
| 1838 | if (1 == pcontrol) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1839 | memcpy(p + 2, ch_caching_pg, sizeof(ch_caching_pg)); |
| 1840 | else if (2 == pcontrol) |
| 1841 | memcpy(p, d_caching_pg, sizeof(d_caching_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1842 | return sizeof(caching_pg); |
| 1843 | } |
| 1844 | |
| 1845 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) |
| 1846 | { /* Control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1847 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
| 1848 | 0, 0, 0, 0}; |
| 1849 | 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] | 1850 | 0, 0, 0x2, 0x4b}; |
| 1851 | |
| 1852 | if (scsi_debug_dsense) |
| 1853 | ctrl_m_pg[2] |= 0x4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1854 | else |
| 1855 | ctrl_m_pg[2] &= ~0x4; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1856 | |
| 1857 | if (scsi_debug_ato) |
| 1858 | ctrl_m_pg[5] |= 0x80; /* ATO=1 */ |
| 1859 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
| 1861 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1862 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
| 1863 | else if (2 == pcontrol) |
| 1864 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1865 | return sizeof(ctrl_m_pg); |
| 1866 | } |
| 1867 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1868 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
| 1870 | { /* Informational Exceptions control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1871 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
| 1872 | 0, 0, 0x0, 0x0}; |
| 1873 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 1874 | 0, 0, 0x0, 0x0}; |
| 1875 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1876 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
| 1877 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1878 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
| 1879 | else if (2 == pcontrol) |
| 1880 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | return sizeof(iec_m_pg); |
| 1882 | } |
| 1883 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1884 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
| 1885 | { /* SAS SSP mode page - short format for mode_sense */ |
| 1886 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, |
| 1887 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; |
| 1888 | |
| 1889 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); |
| 1890 | if (1 == pcontrol) |
| 1891 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); |
| 1892 | return sizeof(sas_sf_m_pg); |
| 1893 | } |
| 1894 | |
| 1895 | |
| 1896 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, |
| 1897 | int target_dev_id) |
| 1898 | { /* SAS phy control and discover mode page for mode_sense */ |
| 1899 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, |
| 1900 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 1901 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 1902 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 1903 | 0x2, 0, 0, 0, 0, 0, 0, 0, |
| 1904 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1905 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1906 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 1907 | 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 1908 | 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 1909 | 0x3, 0, 0, 0, 0, 0, 0, 0, |
| 1910 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1911 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1912 | }; |
| 1913 | int port_a, port_b; |
| 1914 | |
| 1915 | port_a = target_dev_id + 1; |
| 1916 | port_b = port_a + 1; |
| 1917 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); |
| 1918 | p[20] = (port_a >> 24); |
| 1919 | p[21] = (port_a >> 16) & 0xff; |
| 1920 | p[22] = (port_a >> 8) & 0xff; |
| 1921 | p[23] = port_a & 0xff; |
| 1922 | p[48 + 20] = (port_b >> 24); |
| 1923 | p[48 + 21] = (port_b >> 16) & 0xff; |
| 1924 | p[48 + 22] = (port_b >> 8) & 0xff; |
| 1925 | p[48 + 23] = port_b & 0xff; |
| 1926 | if (1 == pcontrol) |
| 1927 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); |
| 1928 | return sizeof(sas_pcd_m_pg); |
| 1929 | } |
| 1930 | |
| 1931 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) |
| 1932 | { /* SAS SSP shared protocol specific port mode subpage */ |
| 1933 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, |
| 1934 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1935 | }; |
| 1936 | |
| 1937 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); |
| 1938 | if (1 == pcontrol) |
| 1939 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); |
| 1940 | return sizeof(sas_sha_m_pg); |
| 1941 | } |
| 1942 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1943 | #define SDEBUG_MAX_MSENSE_SZ 256 |
| 1944 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1945 | static int |
| 1946 | resp_mode_sense(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1947 | { |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1948 | unsigned char dbd, llbaa; |
| 1949 | int pcontrol, pcode, subpcode, bd_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | unsigned char dev_spec; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1951 | int k, alloc_len, msense_6, offset, len, target_dev_id; |
| 1952 | int target = scp->device->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1953 | unsigned char * ap; |
| 1954 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 1955 | unsigned char *cmd = scp->cmnd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1956 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1957 | dbd = !!(cmd[1] & 0x8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1958 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 1959 | pcode = cmd[2] & 0x3f; |
| 1960 | subpcode = cmd[3]; |
| 1961 | msense_6 = (MODE_SENSE == cmd[0]); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1962 | llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
| 1963 | if ((0 == scsi_debug_ptype) && (0 == dbd)) |
| 1964 | bd_len = llbaa ? 16 : 8; |
| 1965 | else |
| 1966 | bd_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
| 1968 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); |
| 1969 | if (0x3 == pcontrol) { /* Saving values not supported */ |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1970 | mk_sense_buffer(scp, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | return check_condition_result; |
| 1972 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1973 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
| 1974 | (devip->target * 1000) - 3; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1975 | /* set DPOFUA bit for disks */ |
| 1976 | if (0 == scsi_debug_ptype) |
| 1977 | dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; |
| 1978 | else |
| 1979 | dev_spec = 0x0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1980 | if (msense_6) { |
| 1981 | arr[2] = dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1982 | arr[3] = bd_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1983 | offset = 4; |
| 1984 | } else { |
| 1985 | arr[3] = dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1986 | if (16 == bd_len) |
| 1987 | arr[4] = 0x1; /* set LONGLBA bit */ |
| 1988 | arr[7] = bd_len; /* assume 255 or less */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1989 | offset = 8; |
| 1990 | } |
| 1991 | ap = arr + offset; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 1992 | if ((bd_len > 0) && (!sdebug_capacity)) |
| 1993 | sdebug_capacity = get_sdebug_capacity(); |
| 1994 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1995 | if (8 == bd_len) { |
| 1996 | if (sdebug_capacity > 0xfffffffe) { |
| 1997 | ap[0] = 0xff; |
| 1998 | ap[1] = 0xff; |
| 1999 | ap[2] = 0xff; |
| 2000 | ap[3] = 0xff; |
| 2001 | } else { |
| 2002 | ap[0] = (sdebug_capacity >> 24) & 0xff; |
| 2003 | ap[1] = (sdebug_capacity >> 16) & 0xff; |
| 2004 | ap[2] = (sdebug_capacity >> 8) & 0xff; |
| 2005 | ap[3] = sdebug_capacity & 0xff; |
| 2006 | } |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2007 | ap[6] = (scsi_debug_sector_size >> 8) & 0xff; |
| 2008 | ap[7] = scsi_debug_sector_size & 0xff; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2009 | offset += bd_len; |
| 2010 | ap = arr + offset; |
| 2011 | } else if (16 == bd_len) { |
| 2012 | unsigned long long capac = sdebug_capacity; |
| 2013 | |
| 2014 | for (k = 0; k < 8; ++k, capac >>= 8) |
| 2015 | ap[7 - k] = capac & 0xff; |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2016 | ap[12] = (scsi_debug_sector_size >> 24) & 0xff; |
| 2017 | ap[13] = (scsi_debug_sector_size >> 16) & 0xff; |
| 2018 | ap[14] = (scsi_debug_sector_size >> 8) & 0xff; |
| 2019 | ap[15] = scsi_debug_sector_size & 0xff; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2020 | offset += bd_len; |
| 2021 | ap = arr + offset; |
| 2022 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2023 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2024 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
| 2025 | /* TODO: Control Extension page */ |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2026 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2027 | return check_condition_result; |
| 2028 | } |
| 2029 | switch (pcode) { |
| 2030 | case 0x1: /* Read-Write error recovery page, direct access */ |
| 2031 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 2032 | offset += len; |
| 2033 | break; |
| 2034 | case 0x2: /* Disconnect-Reconnect page, all devices */ |
| 2035 | len = resp_disconnect_pg(ap, pcontrol, target); |
| 2036 | offset += len; |
| 2037 | break; |
| 2038 | case 0x3: /* Format device page, direct access */ |
| 2039 | len = resp_format_pg(ap, pcontrol, target); |
| 2040 | offset += len; |
| 2041 | break; |
| 2042 | case 0x8: /* Caching page, direct access */ |
| 2043 | len = resp_caching_pg(ap, pcontrol, target); |
| 2044 | offset += len; |
| 2045 | break; |
| 2046 | case 0xa: /* Control Mode page, all devices */ |
| 2047 | len = resp_ctrl_m_pg(ap, pcontrol, target); |
| 2048 | offset += len; |
| 2049 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2050 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
| 2051 | if ((subpcode > 0x2) && (subpcode < 0xff)) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2052 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2053 | return check_condition_result; |
| 2054 | } |
| 2055 | len = 0; |
| 2056 | if ((0x0 == subpcode) || (0xff == subpcode)) |
| 2057 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 2058 | if ((0x1 == subpcode) || (0xff == subpcode)) |
| 2059 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, |
| 2060 | target_dev_id); |
| 2061 | if ((0x2 == subpcode) || (0xff == subpcode)) |
| 2062 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 2063 | offset += len; |
| 2064 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2065 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
| 2066 | len = resp_iec_m_pg(ap, pcontrol, target); |
| 2067 | offset += len; |
| 2068 | break; |
| 2069 | case 0x3f: /* Read all Mode pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2070 | if ((0 == subpcode) || (0xff == subpcode)) { |
| 2071 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 2072 | len += resp_disconnect_pg(ap + len, pcontrol, target); |
| 2073 | len += resp_format_pg(ap + len, pcontrol, target); |
| 2074 | len += resp_caching_pg(ap + len, pcontrol, target); |
| 2075 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); |
| 2076 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 2077 | if (0xff == subpcode) { |
| 2078 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, |
| 2079 | target, target_dev_id); |
| 2080 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 2081 | } |
| 2082 | len += resp_iec_m_pg(ap + len, pcontrol, target); |
| 2083 | } else { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2084 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2085 | return check_condition_result; |
| 2086 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2087 | offset += len; |
| 2088 | break; |
| 2089 | default: |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2090 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2091 | return check_condition_result; |
| 2092 | } |
| 2093 | if (msense_6) |
| 2094 | arr[0] = offset - 1; |
| 2095 | else { |
| 2096 | arr[0] = ((offset - 2) >> 8) & 0xff; |
| 2097 | arr[1] = (offset - 2) & 0xff; |
| 2098 | } |
| 2099 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); |
| 2100 | } |
| 2101 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2102 | #define SDEBUG_MAX_MSELECT_SZ 512 |
| 2103 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2104 | static int |
| 2105 | resp_mode_select(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2106 | { |
| 2107 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2108 | int param_len, res, mpage; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2109 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 2110 | unsigned char *cmd = scp->cmnd; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2111 | int mselect6 = (MODE_SELECT == cmd[0]); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2112 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2113 | memset(arr, 0, sizeof(arr)); |
| 2114 | pf = cmd[1] & 0x10; |
| 2115 | sp = cmd[1] & 0x1; |
| 2116 | param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); |
| 2117 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2118 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, mselect6 ? 4 : 7, -1); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2119 | return check_condition_result; |
| 2120 | } |
| 2121 | res = fetch_to_dev_buffer(scp, arr, param_len); |
| 2122 | if (-1 == res) |
| 2123 | return (DID_ERROR << 16); |
| 2124 | else if ((res < param_len) && |
| 2125 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2126 | sdev_printk(KERN_INFO, scp->device, |
| 2127 | "%s: cdb indicated=%d, IO sent=%d bytes\n", |
| 2128 | __func__, param_len, res); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2129 | md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); |
| 2130 | bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2131 | if (md_len > 2) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2132 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, 0, -1); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2133 | return check_condition_result; |
| 2134 | } |
| 2135 | off = bd_len + (mselect6 ? 4 : 8); |
| 2136 | mpage = arr[off] & 0x3f; |
| 2137 | ps = !!(arr[off] & 0x80); |
| 2138 | if (ps) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2139 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 7); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2140 | return check_condition_result; |
| 2141 | } |
| 2142 | spf = !!(arr[off] & 0x40); |
| 2143 | pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : |
| 2144 | (arr[off + 1] + 2); |
| 2145 | if ((pg_len + off) > param_len) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2146 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2147 | PARAMETER_LIST_LENGTH_ERR, 0); |
| 2148 | return check_condition_result; |
| 2149 | } |
| 2150 | switch (mpage) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2151 | case 0x8: /* Caching Mode page */ |
| 2152 | if (caching_pg[1] == arr[off + 1]) { |
| 2153 | memcpy(caching_pg + 2, arr + off + 2, |
| 2154 | sizeof(caching_pg) - 2); |
| 2155 | goto set_mode_changed_ua; |
| 2156 | } |
| 2157 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2158 | case 0xa: /* Control Mode page */ |
| 2159 | if (ctrl_m_pg[1] == arr[off + 1]) { |
| 2160 | memcpy(ctrl_m_pg + 2, arr + off + 2, |
| 2161 | sizeof(ctrl_m_pg) - 2); |
| 2162 | scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2163 | goto set_mode_changed_ua; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2164 | } |
| 2165 | break; |
| 2166 | case 0x1c: /* Informational Exceptions Mode page */ |
| 2167 | if (iec_m_pg[1] == arr[off + 1]) { |
| 2168 | memcpy(iec_m_pg + 2, arr + off + 2, |
| 2169 | sizeof(iec_m_pg) - 2); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2170 | goto set_mode_changed_ua; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2171 | } |
| 2172 | break; |
| 2173 | default: |
| 2174 | break; |
| 2175 | } |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2176 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 5); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2177 | return check_condition_result; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2178 | set_mode_changed_ua: |
| 2179 | set_bit(SDEBUG_UA_MODE_CHANGED, devip->uas_bm); |
| 2180 | return 0; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2181 | } |
| 2182 | |
| 2183 | static int resp_temp_l_pg(unsigned char * arr) |
| 2184 | { |
| 2185 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, |
| 2186 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, |
| 2187 | }; |
| 2188 | |
| 2189 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); |
| 2190 | return sizeof(temp_l_pg); |
| 2191 | } |
| 2192 | |
| 2193 | static int resp_ie_l_pg(unsigned char * arr) |
| 2194 | { |
| 2195 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, |
| 2196 | }; |
| 2197 | |
| 2198 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); |
| 2199 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ |
| 2200 | arr[4] = THRESHOLD_EXCEEDED; |
| 2201 | arr[5] = 0xff; |
| 2202 | } |
| 2203 | return sizeof(ie_l_pg); |
| 2204 | } |
| 2205 | |
| 2206 | #define SDEBUG_MAX_LSENSE_SZ 512 |
| 2207 | |
| 2208 | static int resp_log_sense(struct scsi_cmnd * scp, |
| 2209 | struct sdebug_dev_info * devip) |
| 2210 | { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2211 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, len, n; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2212 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 2213 | unsigned char *cmd = scp->cmnd; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2214 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2215 | memset(arr, 0, sizeof(arr)); |
| 2216 | ppc = cmd[1] & 0x2; |
| 2217 | sp = cmd[1] & 0x1; |
| 2218 | if (ppc || sp) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2219 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, ppc ? 1 : 0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2220 | return check_condition_result; |
| 2221 | } |
| 2222 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 2223 | pcode = cmd[2] & 0x3f; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2224 | subpcode = cmd[3] & 0xff; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2225 | alloc_len = (cmd[7] << 8) + cmd[8]; |
| 2226 | arr[0] = pcode; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2227 | if (0 == subpcode) { |
| 2228 | switch (pcode) { |
| 2229 | case 0x0: /* Supported log pages log page */ |
| 2230 | n = 4; |
| 2231 | arr[n++] = 0x0; /* this page */ |
| 2232 | arr[n++] = 0xd; /* Temperature */ |
| 2233 | arr[n++] = 0x2f; /* Informational exceptions */ |
| 2234 | arr[3] = n - 4; |
| 2235 | break; |
| 2236 | case 0xd: /* Temperature log page */ |
| 2237 | arr[3] = resp_temp_l_pg(arr + 4); |
| 2238 | break; |
| 2239 | case 0x2f: /* Informational exceptions log page */ |
| 2240 | arr[3] = resp_ie_l_pg(arr + 4); |
| 2241 | break; |
| 2242 | default: |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2243 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2244 | return check_condition_result; |
| 2245 | } |
| 2246 | } else if (0xff == subpcode) { |
| 2247 | arr[0] |= 0x40; |
| 2248 | arr[1] = subpcode; |
| 2249 | switch (pcode) { |
| 2250 | case 0x0: /* Supported log pages and subpages log page */ |
| 2251 | n = 4; |
| 2252 | arr[n++] = 0x0; |
| 2253 | arr[n++] = 0x0; /* 0,0 page */ |
| 2254 | arr[n++] = 0x0; |
| 2255 | arr[n++] = 0xff; /* this page */ |
| 2256 | arr[n++] = 0xd; |
| 2257 | arr[n++] = 0x0; /* Temperature */ |
| 2258 | arr[n++] = 0x2f; |
| 2259 | arr[n++] = 0x0; /* Informational exceptions */ |
| 2260 | arr[3] = n - 4; |
| 2261 | break; |
| 2262 | case 0xd: /* Temperature subpages */ |
| 2263 | n = 4; |
| 2264 | arr[n++] = 0xd; |
| 2265 | arr[n++] = 0x0; /* Temperature */ |
| 2266 | arr[3] = n - 4; |
| 2267 | break; |
| 2268 | case 0x2f: /* Informational exceptions subpages */ |
| 2269 | n = 4; |
| 2270 | arr[n++] = 0x2f; |
| 2271 | arr[n++] = 0x0; /* Informational exceptions */ |
| 2272 | arr[3] = n - 4; |
| 2273 | break; |
| 2274 | default: |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2275 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2276 | return check_condition_result; |
| 2277 | } |
| 2278 | } else { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2279 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2280 | return check_condition_result; |
| 2281 | } |
| 2282 | len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
| 2283 | return fill_from_dev_buffer(scp, arr, |
| 2284 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
| 2285 | } |
| 2286 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2287 | static int check_device_access_params(struct scsi_cmnd *scp, |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2288 | unsigned long long lba, unsigned int num) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2289 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2290 | if (lba + num > sdebug_capacity) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2291 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | return check_condition_result; |
| 2293 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2294 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 2295 | if (num > sdebug_store_sectors) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2296 | /* needs work to find which cdb byte 'num' comes from */ |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2297 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2298 | return check_condition_result; |
| 2299 | } |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2300 | return 0; |
| 2301 | } |
| 2302 | |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2303 | /* Returns number of bytes copied or -1 if error. */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2304 | static int |
| 2305 | do_device_access(struct scsi_cmnd *scmd, u64 lba, u32 num, bool do_write) |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2306 | { |
| 2307 | int ret; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2308 | u64 block, rest = 0; |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2309 | struct scsi_data_buffer *sdb; |
| 2310 | enum dma_data_direction dir; |
| 2311 | size_t (*func)(struct scatterlist *, unsigned int, void *, size_t, |
| 2312 | off_t); |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2313 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2314 | if (do_write) { |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2315 | sdb = scsi_out(scmd); |
| 2316 | dir = DMA_TO_DEVICE; |
| 2317 | func = sg_pcopy_to_buffer; |
| 2318 | } else { |
| 2319 | sdb = scsi_in(scmd); |
| 2320 | dir = DMA_FROM_DEVICE; |
| 2321 | func = sg_pcopy_from_buffer; |
| 2322 | } |
| 2323 | |
| 2324 | if (!sdb->length) |
| 2325 | return 0; |
| 2326 | if (!(scsi_bidi_cmnd(scmd) || scmd->sc_data_direction == dir)) |
| 2327 | return -1; |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2328 | |
| 2329 | block = do_div(lba, sdebug_store_sectors); |
| 2330 | if (block + num > sdebug_store_sectors) |
| 2331 | rest = block + num - sdebug_store_sectors; |
| 2332 | |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2333 | ret = func(sdb->table.sgl, sdb->table.nents, |
| 2334 | fake_storep + (block * scsi_debug_sector_size), |
| 2335 | (num - rest) * scsi_debug_sector_size, 0); |
| 2336 | if (ret != (num - rest) * scsi_debug_sector_size) |
| 2337 | return ret; |
| 2338 | |
| 2339 | if (rest) { |
| 2340 | ret += func(sdb->table.sgl, sdb->table.nents, |
| 2341 | fake_storep, rest * scsi_debug_sector_size, |
| 2342 | (num - rest) * scsi_debug_sector_size); |
| 2343 | } |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2344 | |
| 2345 | return ret; |
| 2346 | } |
| 2347 | |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 2348 | /* If fake_store(lba,num) compares equal to arr(num), then copy top half of |
| 2349 | * arr into fake_store(lba,num) and return true. If comparison fails then |
| 2350 | * return false. */ |
| 2351 | static bool |
| 2352 | comp_write_worker(u64 lba, u32 num, const u8 *arr) |
| 2353 | { |
| 2354 | bool res; |
| 2355 | u64 block, rest = 0; |
| 2356 | u32 store_blks = sdebug_store_sectors; |
| 2357 | u32 lb_size = scsi_debug_sector_size; |
| 2358 | |
| 2359 | block = do_div(lba, store_blks); |
| 2360 | if (block + num > store_blks) |
| 2361 | rest = block + num - store_blks; |
| 2362 | |
| 2363 | res = !memcmp(fake_storep + (block * lb_size), arr, |
| 2364 | (num - rest) * lb_size); |
| 2365 | if (!res) |
| 2366 | return res; |
| 2367 | if (rest) |
| 2368 | res = memcmp(fake_storep, arr + ((num - rest) * lb_size), |
| 2369 | rest * lb_size); |
| 2370 | if (!res) |
| 2371 | return res; |
| 2372 | arr += num * lb_size; |
| 2373 | memcpy(fake_storep + (block * lb_size), arr, (num - rest) * lb_size); |
| 2374 | if (rest) |
| 2375 | memcpy(fake_storep, arr + ((num - rest) * lb_size), |
| 2376 | rest * lb_size); |
| 2377 | return res; |
| 2378 | } |
| 2379 | |
Akinobu Mita | 51d648a | 2013-09-18 21:27:28 +0900 | [diff] [blame] | 2380 | static __be16 dif_compute_csum(const void *buf, int len) |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2381 | { |
Akinobu Mita | 51d648a | 2013-09-18 21:27:28 +0900 | [diff] [blame] | 2382 | __be16 csum; |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2383 | |
Akinobu Mita | 51d648a | 2013-09-18 21:27:28 +0900 | [diff] [blame] | 2384 | if (scsi_debug_guard) |
| 2385 | csum = (__force __be16)ip_compute_csum(buf, len); |
| 2386 | else |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2387 | csum = cpu_to_be16(crc_t10dif(buf, len)); |
Akinobu Mita | 51d648a | 2013-09-18 21:27:28 +0900 | [diff] [blame] | 2388 | |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2389 | return csum; |
| 2390 | } |
| 2391 | |
| 2392 | static int dif_verify(struct sd_dif_tuple *sdt, const void *data, |
| 2393 | sector_t sector, u32 ei_lba) |
| 2394 | { |
Akinobu Mita | 51d648a | 2013-09-18 21:27:28 +0900 | [diff] [blame] | 2395 | __be16 csum = dif_compute_csum(data, scsi_debug_sector_size); |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2396 | |
| 2397 | if (sdt->guard_tag != csum) { |
| 2398 | pr_err("%s: GUARD check failed on sector %lu rcvd 0x%04x, data 0x%04x\n", |
| 2399 | __func__, |
| 2400 | (unsigned long)sector, |
| 2401 | be16_to_cpu(sdt->guard_tag), |
| 2402 | be16_to_cpu(csum)); |
| 2403 | return 0x01; |
| 2404 | } |
| 2405 | if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION && |
| 2406 | be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) { |
| 2407 | pr_err("%s: REF check failed on sector %lu\n", |
| 2408 | __func__, (unsigned long)sector); |
| 2409 | return 0x03; |
| 2410 | } |
| 2411 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && |
| 2412 | be32_to_cpu(sdt->ref_tag) != ei_lba) { |
| 2413 | pr_err("%s: REF check failed on sector %lu\n", |
| 2414 | __func__, (unsigned long)sector); |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2415 | return 0x03; |
| 2416 | } |
| 2417 | return 0; |
| 2418 | } |
| 2419 | |
Akinobu Mita | bb8c063 | 2013-09-18 21:27:25 +0900 | [diff] [blame] | 2420 | static void dif_copy_prot(struct scsi_cmnd *SCpnt, sector_t sector, |
Akinobu Mita | 65f72f2a | 2013-09-18 21:27:26 +0900 | [diff] [blame] | 2421 | unsigned int sectors, bool read) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2422 | { |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2423 | size_t resid; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2424 | void *paddr; |
Akinobu Mita | 14faa94 | 2013-09-18 21:27:24 +0900 | [diff] [blame] | 2425 | const void *dif_store_end = dif_storep + sdebug_store_sectors; |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2426 | struct sg_mapping_iter miter; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2427 | |
Akinobu Mita | e18d8be | 2013-06-29 17:59:18 +0900 | [diff] [blame] | 2428 | /* Bytes of protection data to copy into sgl */ |
| 2429 | resid = sectors * sizeof(*dif_storep); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2430 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2431 | sg_miter_start(&miter, scsi_prot_sglist(SCpnt), |
| 2432 | scsi_prot_sg_count(SCpnt), SG_MITER_ATOMIC | |
| 2433 | (read ? SG_MITER_TO_SG : SG_MITER_FROM_SG)); |
| 2434 | |
| 2435 | while (sg_miter_next(&miter) && resid > 0) { |
| 2436 | size_t len = min(miter.length, resid); |
Akinobu Mita | 14faa94 | 2013-09-18 21:27:24 +0900 | [diff] [blame] | 2437 | void *start = dif_store(sector); |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2438 | size_t rest = 0; |
Akinobu Mita | 14faa94 | 2013-09-18 21:27:24 +0900 | [diff] [blame] | 2439 | |
| 2440 | if (dif_store_end < start + len) |
| 2441 | rest = start + len - dif_store_end; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2442 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2443 | paddr = miter.addr; |
Akinobu Mita | 14faa94 | 2013-09-18 21:27:24 +0900 | [diff] [blame] | 2444 | |
Akinobu Mita | 65f72f2a | 2013-09-18 21:27:26 +0900 | [diff] [blame] | 2445 | if (read) |
| 2446 | memcpy(paddr, start, len - rest); |
| 2447 | else |
| 2448 | memcpy(start, paddr, len - rest); |
| 2449 | |
| 2450 | if (rest) { |
| 2451 | if (read) |
| 2452 | memcpy(paddr + len - rest, dif_storep, rest); |
| 2453 | else |
| 2454 | memcpy(dif_storep, paddr + len - rest, rest); |
| 2455 | } |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2456 | |
Akinobu Mita | e18d8be | 2013-06-29 17:59:18 +0900 | [diff] [blame] | 2457 | sector += len / sizeof(*dif_storep); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2458 | resid -= len; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2459 | } |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2460 | sg_miter_stop(&miter); |
Akinobu Mita | bb8c063 | 2013-09-18 21:27:25 +0900 | [diff] [blame] | 2461 | } |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2462 | |
Akinobu Mita | bb8c063 | 2013-09-18 21:27:25 +0900 | [diff] [blame] | 2463 | static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, |
| 2464 | unsigned int sectors, u32 ei_lba) |
| 2465 | { |
| 2466 | unsigned int i; |
| 2467 | struct sd_dif_tuple *sdt; |
| 2468 | sector_t sector; |
| 2469 | |
Akinobu Mita | c45eabec | 2014-02-26 22:56:58 +0900 | [diff] [blame] | 2470 | for (i = 0; i < sectors; i++, ei_lba++) { |
Akinobu Mita | bb8c063 | 2013-09-18 21:27:25 +0900 | [diff] [blame] | 2471 | int ret; |
| 2472 | |
| 2473 | sector = start_sec + i; |
| 2474 | sdt = dif_store(sector); |
| 2475 | |
Akinobu Mita | 51d648a | 2013-09-18 21:27:28 +0900 | [diff] [blame] | 2476 | if (sdt->app_tag == cpu_to_be16(0xffff)) |
Akinobu Mita | bb8c063 | 2013-09-18 21:27:25 +0900 | [diff] [blame] | 2477 | continue; |
| 2478 | |
| 2479 | ret = dif_verify(sdt, fake_store(sector), sector, ei_lba); |
| 2480 | if (ret) { |
| 2481 | dif_errors++; |
| 2482 | return ret; |
| 2483 | } |
Akinobu Mita | bb8c063 | 2013-09-18 21:27:25 +0900 | [diff] [blame] | 2484 | } |
| 2485 | |
Akinobu Mita | 65f72f2a | 2013-09-18 21:27:26 +0900 | [diff] [blame] | 2486 | dif_copy_prot(SCpnt, start_sec, sectors, true); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2487 | dix_reads++; |
| 2488 | |
| 2489 | return 0; |
| 2490 | } |
| 2491 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2492 | static int |
| 2493 | resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2494 | { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2495 | u8 *cmd = scp->cmnd; |
| 2496 | u64 lba; |
| 2497 | u32 num; |
| 2498 | u32 ei_lba; |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2499 | unsigned long iflags; |
| 2500 | int ret; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2501 | bool check_prot; |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2502 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2503 | switch (cmd[0]) { |
| 2504 | case READ_16: |
| 2505 | ei_lba = 0; |
| 2506 | lba = get_unaligned_be64(cmd + 2); |
| 2507 | num = get_unaligned_be32(cmd + 10); |
| 2508 | check_prot = true; |
| 2509 | break; |
| 2510 | case READ_10: |
| 2511 | ei_lba = 0; |
| 2512 | lba = get_unaligned_be32(cmd + 2); |
| 2513 | num = get_unaligned_be16(cmd + 7); |
| 2514 | check_prot = true; |
| 2515 | break; |
| 2516 | case READ_6: |
| 2517 | ei_lba = 0; |
| 2518 | lba = (u32)cmd[3] | (u32)cmd[2] << 8 | |
| 2519 | (u32)(cmd[1] & 0x1f) << 16; |
| 2520 | num = (0 == cmd[4]) ? 256 : cmd[4]; |
| 2521 | check_prot = true; |
| 2522 | break; |
| 2523 | case READ_12: |
| 2524 | ei_lba = 0; |
| 2525 | lba = get_unaligned_be32(cmd + 2); |
| 2526 | num = get_unaligned_be32(cmd + 6); |
| 2527 | check_prot = true; |
| 2528 | break; |
| 2529 | case XDWRITEREAD_10: |
| 2530 | ei_lba = 0; |
| 2531 | lba = get_unaligned_be32(cmd + 2); |
| 2532 | num = get_unaligned_be16(cmd + 7); |
| 2533 | check_prot = false; |
| 2534 | break; |
| 2535 | default: /* assume READ(32) */ |
| 2536 | lba = get_unaligned_be64(cmd + 12); |
| 2537 | ei_lba = get_unaligned_be32(cmd + 20); |
| 2538 | num = get_unaligned_be32(cmd + 28); |
| 2539 | check_prot = false; |
| 2540 | break; |
| 2541 | } |
| 2542 | if (check_prot) { |
| 2543 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && |
| 2544 | (cmd[1] & 0xe0)) { |
| 2545 | mk_sense_invalid_opcode(scp); |
| 2546 | return check_condition_result; |
| 2547 | } |
| 2548 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || |
| 2549 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && |
| 2550 | (cmd[1] & 0xe0) == 0) |
| 2551 | sdev_printk(KERN_ERR, scp->device, "Unprotected RD " |
| 2552 | "to DIF device\n"); |
| 2553 | } |
| 2554 | if (sdebug_any_injecting_opt) { |
| 2555 | struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp); |
| 2556 | |
| 2557 | if (ep->inj_short) |
| 2558 | num /= 2; |
| 2559 | } |
| 2560 | |
| 2561 | /* inline check_device_access_params() */ |
| 2562 | if (lba + num > sdebug_capacity) { |
| 2563 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
| 2564 | return check_condition_result; |
| 2565 | } |
| 2566 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 2567 | if (num > sdebug_store_sectors) { |
| 2568 | /* needs work to find which cdb byte 'num' comes from */ |
| 2569 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
| 2570 | return check_condition_result; |
| 2571 | } |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2572 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2573 | if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
Douglas Gilbert | 32f7ef7 | 2011-03-11 10:43:35 -0500 | [diff] [blame] | 2574 | (lba <= (OPT_MEDIUM_ERR_ADDR + OPT_MEDIUM_ERR_NUM - 1)) && |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2575 | ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { |
| 2576 | /* claim unrecoverable read error */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2577 | mk_sense_buffer(scp, MEDIUM_ERROR, UNRECOVERED_READ_ERR, 0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2578 | /* set info field and valid bit for fixed descriptor */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2579 | if (0x70 == (scp->sense_buffer[0] & 0x7f)) { |
| 2580 | scp->sense_buffer[0] |= 0x80; /* Valid bit */ |
Douglas Gilbert | 32f7ef7 | 2011-03-11 10:43:35 -0500 | [diff] [blame] | 2581 | ret = (lba < OPT_MEDIUM_ERR_ADDR) |
| 2582 | ? OPT_MEDIUM_ERR_ADDR : (int)lba; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2583 | put_unaligned_be32(ret, scp->sense_buffer + 3); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2584 | } |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2585 | scsi_set_resid(scp, scsi_bufflen(scp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2586 | return check_condition_result; |
| 2587 | } |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2588 | |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 2589 | read_lock_irqsave(&atomic_rw, iflags); |
| 2590 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2591 | /* DIX + T10 DIF */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2592 | if (scsi_debug_dix && scsi_prot_sg_count(scp)) { |
| 2593 | int prot_ret = prot_verify_read(scp, lba, num, ei_lba); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2594 | |
| 2595 | if (prot_ret) { |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 2596 | read_unlock_irqrestore(&atomic_rw, iflags); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2597 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, prot_ret); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2598 | return illegal_condition_result; |
| 2599 | } |
| 2600 | } |
| 2601 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2602 | ret = do_device_access(scp, lba, num, false); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2603 | read_unlock_irqrestore(&atomic_rw, iflags); |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2604 | if (ret == -1) |
| 2605 | return DID_ERROR << 16; |
| 2606 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2607 | scsi_in(scp)->resid = scsi_bufflen(scp) - ret; |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2608 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2609 | if (sdebug_any_injecting_opt) { |
| 2610 | struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp); |
| 2611 | |
| 2612 | if (ep->inj_recovered) { |
| 2613 | mk_sense_buffer(scp, RECOVERED_ERROR, |
| 2614 | THRESHOLD_EXCEEDED, 0); |
| 2615 | return check_condition_result; |
| 2616 | } else if (ep->inj_transport) { |
| 2617 | mk_sense_buffer(scp, ABORTED_COMMAND, |
| 2618 | TRANSPORT_PROBLEM, ACK_NAK_TO); |
| 2619 | return check_condition_result; |
| 2620 | } else if (ep->inj_dif) { |
| 2621 | /* Logical block guard check failed */ |
| 2622 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); |
| 2623 | return illegal_condition_result; |
| 2624 | } else if (ep->inj_dix) { |
| 2625 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); |
| 2626 | return illegal_condition_result; |
| 2627 | } |
| 2628 | } |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2629 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2630 | } |
| 2631 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2632 | void dump_sector(unsigned char *buf, int len) |
| 2633 | { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2634 | int i, j, n; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2635 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2636 | pr_err(">>> Sector Dump <<<\n"); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2637 | for (i = 0 ; i < len ; i += 16) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2638 | char b[128]; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2639 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2640 | for (j = 0, n = 0; j < 16; j++) { |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2641 | unsigned char c = buf[i+j]; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2642 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2643 | if (c >= 0x20 && c < 0x7e) |
| 2644 | n += scnprintf(b + n, sizeof(b) - n, |
| 2645 | " %c ", buf[i+j]); |
| 2646 | else |
| 2647 | n += scnprintf(b + n, sizeof(b) - n, |
| 2648 | "%02x ", buf[i+j]); |
| 2649 | } |
| 2650 | pr_err("%04d: %s\n", i, b); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2651 | } |
| 2652 | } |
| 2653 | |
| 2654 | 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] | 2655 | unsigned int sectors, u32 ei_lba) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2656 | { |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2657 | int ret; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2658 | struct sd_dif_tuple *sdt; |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2659 | void *daddr; |
Akinobu Mita | 65f72f2a | 2013-09-18 21:27:26 +0900 | [diff] [blame] | 2660 | sector_t sector = start_sec; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2661 | int ppage_offset; |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2662 | int dpage_offset; |
| 2663 | struct sg_mapping_iter diter; |
| 2664 | struct sg_mapping_iter piter; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2665 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2666 | BUG_ON(scsi_sg_count(SCpnt) == 0); |
| 2667 | BUG_ON(scsi_prot_sg_count(SCpnt) == 0); |
| 2668 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2669 | sg_miter_start(&piter, scsi_prot_sglist(SCpnt), |
| 2670 | scsi_prot_sg_count(SCpnt), |
| 2671 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); |
| 2672 | sg_miter_start(&diter, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), |
| 2673 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2674 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2675 | /* For each protection page */ |
| 2676 | while (sg_miter_next(&piter)) { |
| 2677 | dpage_offset = 0; |
| 2678 | if (WARN_ON(!sg_miter_next(&diter))) { |
| 2679 | ret = 0x01; |
| 2680 | goto out; |
| 2681 | } |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2682 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2683 | for (ppage_offset = 0; ppage_offset < piter.length; |
| 2684 | ppage_offset += sizeof(struct sd_dif_tuple)) { |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2685 | /* If we're at the end of the current |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2686 | * data page advance to the next one |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2687 | */ |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2688 | if (dpage_offset >= diter.length) { |
| 2689 | if (WARN_ON(!sg_miter_next(&diter))) { |
| 2690 | ret = 0x01; |
| 2691 | goto out; |
| 2692 | } |
| 2693 | dpage_offset = 0; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2694 | } |
| 2695 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2696 | sdt = piter.addr + ppage_offset; |
| 2697 | daddr = diter.addr + dpage_offset; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2698 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2699 | ret = dif_verify(sdt, daddr, sector, ei_lba); |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2700 | if (ret) { |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2701 | dump_sector(daddr, scsi_debug_sector_size); |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 2702 | goto out; |
| 2703 | } |
| 2704 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2705 | sector++; |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 2706 | ei_lba++; |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2707 | dpage_offset += scsi_debug_sector_size; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2708 | } |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2709 | diter.consumed = dpage_offset; |
| 2710 | sg_miter_stop(&diter); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2711 | } |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2712 | sg_miter_stop(&piter); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2713 | |
Akinobu Mita | 65f72f2a | 2013-09-18 21:27:26 +0900 | [diff] [blame] | 2714 | dif_copy_prot(SCpnt, start_sec, sectors, false); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2715 | dix_writes++; |
| 2716 | |
| 2717 | return 0; |
| 2718 | |
| 2719 | out: |
| 2720 | dif_errors++; |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2721 | sg_miter_stop(&diter); |
| 2722 | sg_miter_stop(&piter); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2723 | return ret; |
| 2724 | } |
| 2725 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2726 | static unsigned long lba_to_map_index(sector_t lba) |
| 2727 | { |
| 2728 | if (scsi_debug_unmap_alignment) { |
| 2729 | lba += scsi_debug_unmap_granularity - |
| 2730 | scsi_debug_unmap_alignment; |
| 2731 | } |
| 2732 | do_div(lba, scsi_debug_unmap_granularity); |
| 2733 | |
| 2734 | return lba; |
| 2735 | } |
| 2736 | |
| 2737 | static sector_t map_index_to_lba(unsigned long index) |
| 2738 | { |
Akinobu Mita | a027b5b | 2013-08-26 22:08:41 +0900 | [diff] [blame] | 2739 | sector_t lba = index * scsi_debug_unmap_granularity; |
| 2740 | |
| 2741 | if (scsi_debug_unmap_alignment) { |
| 2742 | lba -= scsi_debug_unmap_granularity - |
| 2743 | scsi_debug_unmap_alignment; |
| 2744 | } |
| 2745 | |
| 2746 | return lba; |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2747 | } |
| 2748 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2749 | static unsigned int map_state(sector_t lba, unsigned int *num) |
| 2750 | { |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2751 | sector_t end; |
| 2752 | unsigned int mapped; |
| 2753 | unsigned long index; |
| 2754 | unsigned long next; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2755 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2756 | index = lba_to_map_index(lba); |
| 2757 | mapped = test_bit(index, map_storep); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2758 | |
| 2759 | if (mapped) |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2760 | next = find_next_zero_bit(map_storep, map_size, index); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2761 | else |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2762 | next = find_next_bit(map_storep, map_size, index); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2763 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2764 | end = min_t(sector_t, sdebug_store_sectors, map_index_to_lba(next)); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2765 | *num = end - lba; |
| 2766 | |
| 2767 | return mapped; |
| 2768 | } |
| 2769 | |
| 2770 | static void map_region(sector_t lba, unsigned int len) |
| 2771 | { |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2772 | sector_t end = lba + len; |
| 2773 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2774 | while (lba < end) { |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2775 | unsigned long index = lba_to_map_index(lba); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2776 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2777 | if (index < map_size) |
| 2778 | set_bit(index, map_storep); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2779 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2780 | lba = map_index_to_lba(index + 1); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2781 | } |
| 2782 | } |
| 2783 | |
| 2784 | static void unmap_region(sector_t lba, unsigned int len) |
| 2785 | { |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2786 | sector_t end = lba + len; |
| 2787 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2788 | while (lba < end) { |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2789 | unsigned long index = lba_to_map_index(lba); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2790 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2791 | if (lba == map_index_to_lba(index) && |
| 2792 | lba + scsi_debug_unmap_granularity <= end && |
| 2793 | index < map_size) { |
| 2794 | clear_bit(index, map_storep); |
| 2795 | if (scsi_debug_lbprz) { |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 2796 | memset(fake_storep + |
Akinobu Mita | cc34a8e | 2013-04-16 22:11:57 +0900 | [diff] [blame] | 2797 | lba * scsi_debug_sector_size, 0, |
| 2798 | scsi_debug_sector_size * |
| 2799 | scsi_debug_unmap_granularity); |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2800 | } |
Akinobu Mita | e9926b4 | 2013-06-29 17:59:17 +0900 | [diff] [blame] | 2801 | if (dif_storep) { |
| 2802 | memset(dif_storep + lba, 0xff, |
| 2803 | sizeof(*dif_storep) * |
| 2804 | scsi_debug_unmap_granularity); |
| 2805 | } |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 2806 | } |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2807 | lba = map_index_to_lba(index + 1); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2808 | } |
| 2809 | } |
| 2810 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2811 | static int |
| 2812 | resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2813 | { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2814 | u8 *cmd = scp->cmnd; |
| 2815 | u64 lba; |
| 2816 | u32 num; |
| 2817 | u32 ei_lba; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2818 | unsigned long iflags; |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2819 | int ret; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2820 | bool check_prot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2821 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2822 | switch (cmd[0]) { |
| 2823 | case WRITE_16: |
| 2824 | ei_lba = 0; |
| 2825 | lba = get_unaligned_be64(cmd + 2); |
| 2826 | num = get_unaligned_be32(cmd + 10); |
| 2827 | check_prot = true; |
| 2828 | break; |
| 2829 | case WRITE_10: |
| 2830 | ei_lba = 0; |
| 2831 | lba = get_unaligned_be32(cmd + 2); |
| 2832 | num = get_unaligned_be16(cmd + 7); |
| 2833 | check_prot = true; |
| 2834 | break; |
| 2835 | case WRITE_6: |
| 2836 | ei_lba = 0; |
| 2837 | lba = (u32)cmd[3] | (u32)cmd[2] << 8 | |
| 2838 | (u32)(cmd[1] & 0x1f) << 16; |
| 2839 | num = (0 == cmd[4]) ? 256 : cmd[4]; |
| 2840 | check_prot = true; |
| 2841 | break; |
| 2842 | case WRITE_12: |
| 2843 | ei_lba = 0; |
| 2844 | lba = get_unaligned_be32(cmd + 2); |
| 2845 | num = get_unaligned_be32(cmd + 6); |
| 2846 | check_prot = true; |
| 2847 | break; |
| 2848 | case 0x53: /* XDWRITEREAD(10) */ |
| 2849 | ei_lba = 0; |
| 2850 | lba = get_unaligned_be32(cmd + 2); |
| 2851 | num = get_unaligned_be16(cmd + 7); |
| 2852 | check_prot = false; |
| 2853 | break; |
| 2854 | default: /* assume WRITE(32) */ |
| 2855 | lba = get_unaligned_be64(cmd + 12); |
| 2856 | ei_lba = get_unaligned_be32(cmd + 20); |
| 2857 | num = get_unaligned_be32(cmd + 28); |
| 2858 | check_prot = false; |
| 2859 | break; |
| 2860 | } |
| 2861 | if (check_prot) { |
| 2862 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && |
| 2863 | (cmd[1] & 0xe0)) { |
| 2864 | mk_sense_invalid_opcode(scp); |
| 2865 | return check_condition_result; |
| 2866 | } |
| 2867 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || |
| 2868 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && |
| 2869 | (cmd[1] & 0xe0) == 0) |
| 2870 | sdev_printk(KERN_ERR, scp->device, "Unprotected WR " |
| 2871 | "to DIF device\n"); |
| 2872 | } |
| 2873 | |
| 2874 | /* inline check_device_access_params() */ |
| 2875 | if (lba + num > sdebug_capacity) { |
| 2876 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
| 2877 | return check_condition_result; |
| 2878 | } |
| 2879 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 2880 | if (num > sdebug_store_sectors) { |
| 2881 | /* needs work to find which cdb byte 'num' comes from */ |
| 2882 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
| 2883 | return check_condition_result; |
| 2884 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2885 | |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 2886 | write_lock_irqsave(&atomic_rw, iflags); |
| 2887 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2888 | /* DIX + T10 DIF */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2889 | if (scsi_debug_dix && scsi_prot_sg_count(scp)) { |
| 2890 | int prot_ret = prot_verify_write(scp, lba, num, ei_lba); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2891 | |
| 2892 | if (prot_ret) { |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 2893 | write_unlock_irqrestore(&atomic_rw, iflags); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2894 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, prot_ret); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2895 | return illegal_condition_result; |
| 2896 | } |
| 2897 | } |
| 2898 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2899 | ret = do_device_access(scp, lba, num, true); |
Akinobu Mita | 9ed8d3d | 2013-04-16 22:11:55 +0900 | [diff] [blame] | 2900 | if (scsi_debug_lbp()) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2901 | map_region(lba, num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2902 | write_unlock_irqrestore(&atomic_rw, iflags); |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2903 | if (-1 == ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2904 | return (DID_ERROR << 16); |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 2905 | else if ((ret < (num * scsi_debug_sector_size)) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2906 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2907 | sdev_printk(KERN_INFO, scp->device, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2908 | "%s: write: cdb indicated=%u, IO sent=%d bytes\n", |
| 2909 | my_name, num * scsi_debug_sector_size, ret); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2910 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2911 | if (sdebug_any_injecting_opt) { |
| 2912 | struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp); |
| 2913 | |
| 2914 | if (ep->inj_recovered) { |
| 2915 | mk_sense_buffer(scp, RECOVERED_ERROR, |
| 2916 | THRESHOLD_EXCEEDED, 0); |
| 2917 | return check_condition_result; |
| 2918 | } else if (ep->inj_dif) { |
| 2919 | /* Logical block guard check failed */ |
| 2920 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); |
| 2921 | return illegal_condition_result; |
| 2922 | } else if (ep->inj_dix) { |
| 2923 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); |
| 2924 | return illegal_condition_result; |
| 2925 | } |
| 2926 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2927 | return 0; |
| 2928 | } |
| 2929 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2930 | static int |
| 2931 | resp_write_same(struct scsi_cmnd *scp, u64 lba, u32 num, u32 ei_lba, |
| 2932 | bool unmap, bool ndob) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2933 | { |
| 2934 | unsigned long iflags; |
| 2935 | unsigned long long i; |
| 2936 | int ret; |
| 2937 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2938 | ret = check_device_access_params(scp, lba, num); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2939 | if (ret) |
| 2940 | return ret; |
| 2941 | |
| 2942 | write_lock_irqsave(&atomic_rw, iflags); |
| 2943 | |
Akinobu Mita | 9ed8d3d | 2013-04-16 22:11:55 +0900 | [diff] [blame] | 2944 | if (unmap && scsi_debug_lbp()) { |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2945 | unmap_region(lba, num); |
| 2946 | goto out; |
| 2947 | } |
| 2948 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2949 | /* if ndob then zero 1 logical block, else fetch 1 logical block */ |
| 2950 | if (ndob) { |
| 2951 | memset(fake_storep + (lba * scsi_debug_sector_size), 0, |
| 2952 | scsi_debug_sector_size); |
| 2953 | ret = 0; |
| 2954 | } else |
| 2955 | ret = fetch_to_dev_buffer(scp, fake_storep + |
| 2956 | (lba * scsi_debug_sector_size), |
| 2957 | scsi_debug_sector_size); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2958 | |
| 2959 | if (-1 == ret) { |
| 2960 | write_unlock_irqrestore(&atomic_rw, iflags); |
| 2961 | return (DID_ERROR << 16); |
| 2962 | } else if ((ret < (num * scsi_debug_sector_size)) && |
| 2963 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2964 | sdev_printk(KERN_INFO, scp->device, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2965 | "%s: %s: cdb indicated=%u, IO sent=%d bytes\n", |
| 2966 | my_name, "write same", |
| 2967 | num * scsi_debug_sector_size, ret); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2968 | |
| 2969 | /* Copy first sector to remaining blocks */ |
| 2970 | for (i = 1 ; i < num ; i++) |
| 2971 | memcpy(fake_storep + ((lba + i) * scsi_debug_sector_size), |
| 2972 | fake_storep + (lba * scsi_debug_sector_size), |
| 2973 | scsi_debug_sector_size); |
| 2974 | |
Akinobu Mita | 9ed8d3d | 2013-04-16 22:11:55 +0900 | [diff] [blame] | 2975 | if (scsi_debug_lbp()) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2976 | map_region(lba, num); |
| 2977 | out: |
| 2978 | write_unlock_irqrestore(&atomic_rw, iflags); |
| 2979 | |
| 2980 | return 0; |
| 2981 | } |
| 2982 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2983 | static int |
| 2984 | resp_write_same_10(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
| 2985 | { |
| 2986 | u8 *cmd = scp->cmnd; |
| 2987 | u32 lba; |
| 2988 | u16 num; |
| 2989 | u32 ei_lba = 0; |
| 2990 | bool unmap = false; |
| 2991 | |
| 2992 | if (cmd[1] & 0x8) { |
| 2993 | if (scsi_debug_lbpws10 == 0) { |
| 2994 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 3); |
| 2995 | return check_condition_result; |
| 2996 | } else |
| 2997 | unmap = true; |
| 2998 | } |
| 2999 | lba = get_unaligned_be32(cmd + 2); |
| 3000 | num = get_unaligned_be16(cmd + 7); |
| 3001 | if (num > scsi_debug_write_same_length) { |
| 3002 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 7, -1); |
| 3003 | return check_condition_result; |
| 3004 | } |
| 3005 | return resp_write_same(scp, lba, num, ei_lba, unmap, false); |
| 3006 | } |
| 3007 | |
| 3008 | static int |
| 3009 | resp_write_same_16(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
| 3010 | { |
| 3011 | u8 *cmd = scp->cmnd; |
| 3012 | u64 lba; |
| 3013 | u32 num; |
| 3014 | u32 ei_lba = 0; |
| 3015 | bool unmap = false; |
| 3016 | bool ndob = false; |
| 3017 | |
| 3018 | if (cmd[1] & 0x8) { /* UNMAP */ |
| 3019 | if (scsi_debug_lbpws == 0) { |
| 3020 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 3); |
| 3021 | return check_condition_result; |
| 3022 | } else |
| 3023 | unmap = true; |
| 3024 | } |
| 3025 | if (cmd[1] & 0x1) /* NDOB (no data-out buffer, assumes zeroes) */ |
| 3026 | ndob = true; |
| 3027 | lba = get_unaligned_be64(cmd + 2); |
| 3028 | num = get_unaligned_be32(cmd + 10); |
| 3029 | if (num > scsi_debug_write_same_length) { |
| 3030 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 10, -1); |
| 3031 | return check_condition_result; |
| 3032 | } |
| 3033 | return resp_write_same(scp, lba, num, ei_lba, unmap, ndob); |
| 3034 | } |
| 3035 | |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3036 | static int |
| 3037 | resp_comp_write(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
| 3038 | { |
| 3039 | u8 *cmd = scp->cmnd; |
| 3040 | u8 *arr; |
| 3041 | u8 *fake_storep_hold; |
| 3042 | u64 lba; |
| 3043 | u32 dnum; |
| 3044 | u32 lb_size = scsi_debug_sector_size; |
| 3045 | u8 num; |
| 3046 | unsigned long iflags; |
| 3047 | int ret; |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3048 | int retval = 0; |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3049 | |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3050 | lba = get_unaligned_be64(cmd + 2); |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3051 | num = cmd[13]; /* 1 to a maximum of 255 logical blocks */ |
| 3052 | if (0 == num) |
| 3053 | return 0; /* degenerate case, not an error */ |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3054 | if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && |
| 3055 | (cmd[1] & 0xe0)) { |
| 3056 | mk_sense_invalid_opcode(scp); |
| 3057 | return check_condition_result; |
| 3058 | } |
| 3059 | if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || |
| 3060 | scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && |
| 3061 | (cmd[1] & 0xe0) == 0) |
| 3062 | sdev_printk(KERN_ERR, scp->device, "Unprotected WR " |
| 3063 | "to DIF device\n"); |
| 3064 | |
| 3065 | /* inline check_device_access_params() */ |
| 3066 | if (lba + num > sdebug_capacity) { |
| 3067 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
| 3068 | return check_condition_result; |
| 3069 | } |
| 3070 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 3071 | if (num > sdebug_store_sectors) { |
| 3072 | /* needs work to find which cdb byte 'num' comes from */ |
| 3073 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
| 3074 | return check_condition_result; |
| 3075 | } |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3076 | dnum = 2 * num; |
| 3077 | arr = kzalloc(dnum * lb_size, GFP_ATOMIC); |
| 3078 | if (NULL == arr) { |
| 3079 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, |
| 3080 | INSUFF_RES_ASCQ); |
| 3081 | return check_condition_result; |
| 3082 | } |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3083 | |
| 3084 | write_lock_irqsave(&atomic_rw, iflags); |
| 3085 | |
| 3086 | /* trick do_device_access() to fetch both compare and write buffers |
| 3087 | * from data-in into arr. Safe (atomic) since write_lock held. */ |
| 3088 | fake_storep_hold = fake_storep; |
| 3089 | fake_storep = arr; |
| 3090 | ret = do_device_access(scp, 0, dnum, true); |
| 3091 | fake_storep = fake_storep_hold; |
| 3092 | if (ret == -1) { |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3093 | retval = DID_ERROR << 16; |
| 3094 | goto cleanup; |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3095 | } else if ((ret < (dnum * lb_size)) && |
| 3096 | (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
| 3097 | sdev_printk(KERN_INFO, scp->device, "%s: compare_write: cdb " |
| 3098 | "indicated=%u, IO sent=%d bytes\n", my_name, |
| 3099 | dnum * lb_size, ret); |
| 3100 | if (!comp_write_worker(lba, num, arr)) { |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3101 | mk_sense_buffer(scp, MISCOMPARE, MISCOMPARE_VERIFY_ASC, 0); |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3102 | retval = check_condition_result; |
| 3103 | goto cleanup; |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3104 | } |
| 3105 | if (scsi_debug_lbp()) |
| 3106 | map_region(lba, num); |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3107 | cleanup: |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3108 | write_unlock_irqrestore(&atomic_rw, iflags); |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3109 | kfree(arr); |
| 3110 | return retval; |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3111 | } |
| 3112 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3113 | struct unmap_block_desc { |
| 3114 | __be64 lba; |
| 3115 | __be32 blocks; |
| 3116 | __be32 __reserved; |
| 3117 | }; |
| 3118 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3119 | static int |
| 3120 | resp_unmap(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3121 | { |
| 3122 | unsigned char *buf; |
| 3123 | struct unmap_block_desc *desc; |
| 3124 | unsigned int i, payload_len, descriptors; |
| 3125 | int ret; |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 3126 | unsigned long iflags; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3127 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3128 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3129 | if (!scsi_debug_lbp()) |
| 3130 | return 0; /* fib and say its done */ |
| 3131 | payload_len = get_unaligned_be16(scp->cmnd + 7); |
| 3132 | BUG_ON(scsi_bufflen(scp) != payload_len); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3133 | |
| 3134 | descriptors = (payload_len - 8) / 16; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3135 | if (descriptors > scsi_debug_unmap_max_desc) { |
| 3136 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 7, -1); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3137 | return check_condition_result; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3138 | } |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3139 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3140 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); |
| 3141 | if (!buf) { |
| 3142 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, |
| 3143 | INSUFF_RES_ASCQ); |
| 3144 | return check_condition_result; |
| 3145 | } |
| 3146 | |
| 3147 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3148 | |
| 3149 | BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2); |
| 3150 | BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16); |
| 3151 | |
| 3152 | desc = (void *)&buf[8]; |
| 3153 | |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 3154 | write_lock_irqsave(&atomic_rw, iflags); |
| 3155 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3156 | for (i = 0 ; i < descriptors ; i++) { |
| 3157 | unsigned long long lba = get_unaligned_be64(&desc[i].lba); |
| 3158 | unsigned int num = get_unaligned_be32(&desc[i].blocks); |
| 3159 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3160 | ret = check_device_access_params(scp, lba, num); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3161 | if (ret) |
| 3162 | goto out; |
| 3163 | |
| 3164 | unmap_region(lba, num); |
| 3165 | } |
| 3166 | |
| 3167 | ret = 0; |
| 3168 | |
| 3169 | out: |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 3170 | write_unlock_irqrestore(&atomic_rw, iflags); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3171 | kfree(buf); |
| 3172 | |
| 3173 | return ret; |
| 3174 | } |
| 3175 | |
| 3176 | #define SDEBUG_GET_LBA_STATUS_LEN 32 |
| 3177 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3178 | static int |
| 3179 | resp_get_lba_status(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3180 | { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3181 | u8 *cmd = scp->cmnd; |
| 3182 | u64 lba; |
| 3183 | u32 alloc_len, mapped, num; |
| 3184 | u8 arr[SDEBUG_GET_LBA_STATUS_LEN]; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3185 | int ret; |
| 3186 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3187 | lba = get_unaligned_be64(cmd + 2); |
| 3188 | alloc_len = get_unaligned_be32(cmd + 10); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3189 | |
| 3190 | if (alloc_len < 24) |
| 3191 | return 0; |
| 3192 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3193 | ret = check_device_access_params(scp, lba, 1); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3194 | if (ret) |
| 3195 | return ret; |
| 3196 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3197 | if (scsi_debug_lbp()) |
| 3198 | mapped = map_state(lba, &num); |
| 3199 | else { |
| 3200 | mapped = 1; |
| 3201 | /* following just in case virtual_gb changed */ |
| 3202 | sdebug_capacity = get_sdebug_capacity(); |
| 3203 | if (sdebug_capacity - lba <= 0xffffffff) |
| 3204 | num = sdebug_capacity - lba; |
| 3205 | else |
| 3206 | num = 0xffffffff; |
| 3207 | } |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3208 | |
| 3209 | memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3210 | put_unaligned_be32(20, arr); /* Parameter Data Length */ |
| 3211 | put_unaligned_be64(lba, arr + 8); /* LBA */ |
| 3212 | put_unaligned_be32(num, arr + 16); /* Number of blocks */ |
| 3213 | arr[20] = !mapped; /* prov_stat=0: mapped; 1: dealloc */ |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3214 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3215 | return fill_from_dev_buffer(scp, arr, SDEBUG_GET_LBA_STATUS_LEN); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3216 | } |
| 3217 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3218 | #define SDEBUG_RLUN_ARR_SZ 256 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3219 | |
| 3220 | static int resp_report_luns(struct scsi_cmnd * scp, |
| 3221 | struct sdebug_dev_info * devip) |
| 3222 | { |
| 3223 | unsigned int alloc_len; |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 3224 | int lun_cnt, i, upper, num, n, want_wlun, shortish; |
| 3225 | u64 lun; |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 3226 | unsigned char *cmd = scp->cmnd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3227 | int select_report = (int)cmd[2]; |
| 3228 | struct scsi_lun *one_lun; |
| 3229 | unsigned char arr[SDEBUG_RLUN_ARR_SZ]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3230 | unsigned char * max_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3231 | |
| 3232 | alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 3233 | shortish = (alloc_len < 4); |
| 3234 | if (shortish || (select_report > 2)) { |
| 3235 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, shortish ? 6 : 2, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3236 | return check_condition_result; |
| 3237 | } |
| 3238 | /* can produce response with up to 16k luns (lun 0 to lun 16383) */ |
| 3239 | memset(arr, 0, SDEBUG_RLUN_ARR_SZ); |
| 3240 | lun_cnt = scsi_debug_max_luns; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3241 | if (1 == select_report) |
| 3242 | lun_cnt = 0; |
| 3243 | else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) |
| 3244 | --lun_cnt; |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 3245 | want_wlun = (select_report > 0) ? 1 : 0; |
| 3246 | num = lun_cnt + want_wlun; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3247 | arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; |
| 3248 | arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; |
| 3249 | n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / |
| 3250 | sizeof(struct scsi_lun)), num); |
| 3251 | if (n < num) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 3252 | want_wlun = 0; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3253 | lun_cnt = n; |
| 3254 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3255 | one_lun = (struct scsi_lun *) &arr[8]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3256 | max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
| 3257 | for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); |
| 3258 | ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); |
| 3259 | i++, lun++) { |
| 3260 | upper = (lun >> 8) & 0x3f; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3261 | if (upper) |
| 3262 | one_lun[i].scsi_lun[0] = |
| 3263 | (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3264 | one_lun[i].scsi_lun[1] = lun & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3265 | } |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 3266 | if (want_wlun) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3267 | one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; |
| 3268 | one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; |
| 3269 | i++; |
| 3270 | } |
| 3271 | alloc_len = (unsigned char *)(one_lun + i) - arr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3272 | return fill_from_dev_buffer(scp, arr, |
| 3273 | min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); |
| 3274 | } |
| 3275 | |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3276 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
| 3277 | unsigned int num, struct sdebug_dev_info *devip) |
| 3278 | { |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3279 | int j; |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3280 | unsigned char *kaddr, *buf; |
| 3281 | unsigned int offset; |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3282 | struct scsi_data_buffer *sdb = scsi_in(scp); |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3283 | struct sg_mapping_iter miter; |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3284 | |
| 3285 | /* better not to use temporary buffer. */ |
| 3286 | buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); |
Akinobu Mita | c5af0db | 2014-02-26 22:57:01 +0900 | [diff] [blame] | 3287 | if (!buf) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 3288 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, |
| 3289 | INSUFF_RES_ASCQ); |
Akinobu Mita | c5af0db | 2014-02-26 22:57:01 +0900 | [diff] [blame] | 3290 | return check_condition_result; |
| 3291 | } |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3292 | |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 3293 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3294 | |
| 3295 | offset = 0; |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3296 | sg_miter_start(&miter, sdb->table.sgl, sdb->table.nents, |
| 3297 | SG_MITER_ATOMIC | SG_MITER_TO_SG); |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3298 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3299 | while (sg_miter_next(&miter)) { |
| 3300 | kaddr = miter.addr; |
| 3301 | for (j = 0; j < miter.length; j++) |
| 3302 | *(kaddr + j) ^= *(buf + offset + j); |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3303 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3304 | offset += miter.length; |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3305 | } |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3306 | sg_miter_stop(&miter); |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3307 | kfree(buf); |
| 3308 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3309 | return 0; |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3310 | } |
| 3311 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3312 | static int |
| 3313 | resp_xdwriteread_10(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
| 3314 | { |
| 3315 | u8 *cmd = scp->cmnd; |
| 3316 | u64 lba; |
| 3317 | u32 num; |
| 3318 | int errsts; |
| 3319 | |
| 3320 | if (!scsi_bidi_cmnd(scp)) { |
| 3321 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, |
| 3322 | INSUFF_RES_ASCQ); |
| 3323 | return check_condition_result; |
| 3324 | } |
| 3325 | errsts = resp_read_dt0(scp, devip); |
| 3326 | if (errsts) |
| 3327 | return errsts; |
| 3328 | if (!(cmd[1] & 0x4)) { /* DISABLE_WRITE is not set */ |
| 3329 | errsts = resp_write_dt0(scp, devip); |
| 3330 | if (errsts) |
| 3331 | return errsts; |
| 3332 | } |
| 3333 | lba = get_unaligned_be32(cmd + 2); |
| 3334 | num = get_unaligned_be16(cmd + 7); |
| 3335 | return resp_xdwriteread(scp, lba, num, devip); |
| 3336 | } |
| 3337 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3338 | /* When timer or tasklet goes off this function is called. */ |
| 3339 | static void sdebug_q_cmd_complete(unsigned long indx) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3340 | { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3341 | int qa_indx; |
| 3342 | int retiring = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3343 | unsigned long iflags; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3344 | struct sdebug_queued_cmd *sqcp; |
| 3345 | struct scsi_cmnd *scp; |
| 3346 | struct sdebug_dev_info *devip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3347 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3348 | atomic_inc(&sdebug_completions); |
| 3349 | qa_indx = indx; |
| 3350 | if ((qa_indx < 0) || (qa_indx >= SCSI_DEBUG_CANQUEUE)) { |
| 3351 | pr_err("%s: wild qa_indx=%d\n", __func__, qa_indx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3352 | return; |
| 3353 | } |
| 3354 | spin_lock_irqsave(&queued_arr_lock, iflags); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3355 | sqcp = &queued_arr[qa_indx]; |
| 3356 | scp = sqcp->a_cmnd; |
| 3357 | if (NULL == scp) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3358 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3359 | pr_err("%s: scp is NULL\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3360 | return; |
| 3361 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3362 | devip = (struct sdebug_dev_info *)scp->device->hostdata; |
| 3363 | if (devip) |
| 3364 | atomic_dec(&devip->num_in_q); |
| 3365 | else |
| 3366 | pr_err("%s: devip=NULL\n", __func__); |
| 3367 | if (atomic_read(&retired_max_queue) > 0) |
| 3368 | retiring = 1; |
| 3369 | |
| 3370 | sqcp->a_cmnd = NULL; |
| 3371 | if (!test_and_clear_bit(qa_indx, queued_in_use_bm)) { |
| 3372 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 3373 | pr_err("%s: Unexpected completion\n", __func__); |
| 3374 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3375 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3376 | |
| 3377 | if (unlikely(retiring)) { /* user has reduced max_queue */ |
| 3378 | int k, retval; |
| 3379 | |
| 3380 | retval = atomic_read(&retired_max_queue); |
| 3381 | if (qa_indx >= retval) { |
| 3382 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 3383 | pr_err("%s: index %d too large\n", __func__, retval); |
| 3384 | return; |
| 3385 | } |
| 3386 | k = find_last_bit(queued_in_use_bm, retval); |
| 3387 | if ((k < scsi_debug_max_queue) || (k == retval)) |
| 3388 | atomic_set(&retired_max_queue, 0); |
| 3389 | else |
| 3390 | atomic_set(&retired_max_queue, k + 1); |
| 3391 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3392 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3393 | scp->scsi_done(scp); /* callback to mid level */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3394 | } |
| 3395 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3396 | /* When high resolution timer goes off this function is called. */ |
| 3397 | static enum hrtimer_restart |
| 3398 | sdebug_q_cmd_hrt_complete(struct hrtimer *timer) |
| 3399 | { |
| 3400 | int qa_indx; |
| 3401 | int retiring = 0; |
| 3402 | unsigned long iflags; |
| 3403 | struct sdebug_hrtimer *sd_hrtp = (struct sdebug_hrtimer *)timer; |
| 3404 | struct sdebug_queued_cmd *sqcp; |
| 3405 | struct scsi_cmnd *scp; |
| 3406 | struct sdebug_dev_info *devip; |
| 3407 | |
| 3408 | atomic_inc(&sdebug_completions); |
| 3409 | qa_indx = sd_hrtp->qa_indx; |
| 3410 | if ((qa_indx < 0) || (qa_indx >= SCSI_DEBUG_CANQUEUE)) { |
| 3411 | pr_err("%s: wild qa_indx=%d\n", __func__, qa_indx); |
| 3412 | goto the_end; |
| 3413 | } |
| 3414 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 3415 | sqcp = &queued_arr[qa_indx]; |
| 3416 | scp = sqcp->a_cmnd; |
| 3417 | if (NULL == scp) { |
| 3418 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 3419 | pr_err("%s: scp is NULL\n", __func__); |
| 3420 | goto the_end; |
| 3421 | } |
| 3422 | devip = (struct sdebug_dev_info *)scp->device->hostdata; |
| 3423 | if (devip) |
| 3424 | atomic_dec(&devip->num_in_q); |
| 3425 | else |
| 3426 | pr_err("%s: devip=NULL\n", __func__); |
| 3427 | if (atomic_read(&retired_max_queue) > 0) |
| 3428 | retiring = 1; |
| 3429 | |
| 3430 | sqcp->a_cmnd = NULL; |
| 3431 | if (!test_and_clear_bit(qa_indx, queued_in_use_bm)) { |
| 3432 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 3433 | pr_err("%s: Unexpected completion\n", __func__); |
| 3434 | goto the_end; |
| 3435 | } |
| 3436 | |
| 3437 | if (unlikely(retiring)) { /* user has reduced max_queue */ |
| 3438 | int k, retval; |
| 3439 | |
| 3440 | retval = atomic_read(&retired_max_queue); |
| 3441 | if (qa_indx >= retval) { |
| 3442 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 3443 | pr_err("%s: index %d too large\n", __func__, retval); |
| 3444 | goto the_end; |
| 3445 | } |
| 3446 | k = find_last_bit(queued_in_use_bm, retval); |
| 3447 | if ((k < scsi_debug_max_queue) || (k == retval)) |
| 3448 | atomic_set(&retired_max_queue, 0); |
| 3449 | else |
| 3450 | atomic_set(&retired_max_queue, k + 1); |
| 3451 | } |
| 3452 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 3453 | scp->scsi_done(scp); /* callback to mid level */ |
| 3454 | the_end: |
| 3455 | return HRTIMER_NORESTART; |
| 3456 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3457 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3458 | static struct sdebug_dev_info * |
| 3459 | sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags) |
FUJITA Tomonori | 5cb2fc0 | 2008-03-20 11:09:16 +0900 | [diff] [blame] | 3460 | { |
| 3461 | struct sdebug_dev_info *devip; |
| 3462 | |
| 3463 | devip = kzalloc(sizeof(*devip), flags); |
| 3464 | if (devip) { |
| 3465 | devip->sdbg_host = sdbg_host; |
| 3466 | list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); |
| 3467 | } |
| 3468 | return devip; |
| 3469 | } |
| 3470 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3471 | static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
| 3472 | { |
| 3473 | struct sdebug_host_info * sdbg_host; |
| 3474 | struct sdebug_dev_info * open_devip = NULL; |
| 3475 | struct sdebug_dev_info * devip = |
| 3476 | (struct sdebug_dev_info *)sdev->hostdata; |
| 3477 | |
| 3478 | if (devip) |
| 3479 | return devip; |
FUJITA Tomonori | d1e4c9c | 2008-03-02 18:30:18 +0900 | [diff] [blame] | 3480 | sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
| 3481 | if (!sdbg_host) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3482 | pr_err("%s: Host info NULL\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3483 | return NULL; |
| 3484 | } |
| 3485 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { |
| 3486 | if ((devip->used) && (devip->channel == sdev->channel) && |
| 3487 | (devip->target == sdev->id) && |
| 3488 | (devip->lun == sdev->lun)) |
| 3489 | return devip; |
| 3490 | else { |
| 3491 | if ((!devip->used) && (!open_devip)) |
| 3492 | open_devip = devip; |
| 3493 | } |
| 3494 | } |
FUJITA Tomonori | 5cb2fc0 | 2008-03-20 11:09:16 +0900 | [diff] [blame] | 3495 | if (!open_devip) { /* try and make a new one */ |
| 3496 | open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); |
| 3497 | if (!open_devip) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3498 | printk(KERN_ERR "%s: out of memory at line %d\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 3499 | __func__, __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3500 | return NULL; |
| 3501 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3502 | } |
FUJITA Tomonori | a75869d | 2008-03-20 11:09:17 +0900 | [diff] [blame] | 3503 | |
| 3504 | open_devip->channel = sdev->channel; |
| 3505 | open_devip->target = sdev->id; |
| 3506 | open_devip->lun = sdev->lun; |
| 3507 | open_devip->sdbg_host = sdbg_host; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3508 | atomic_set(&open_devip->num_in_q, 0); |
| 3509 | set_bit(SDEBUG_UA_POR, open_devip->uas_bm); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3510 | open_devip->used = true; |
FUJITA Tomonori | a75869d | 2008-03-20 11:09:17 +0900 | [diff] [blame] | 3511 | return open_devip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3512 | } |
| 3513 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3514 | static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3515 | { |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3516 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
Hannes Reinecke | 9cb78c1 | 2014-06-25 15:27:36 +0200 | [diff] [blame] | 3517 | printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %llu>\n", |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3518 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
Nick Piggin | 75ad23b | 2008-04-29 14:48:33 +0200 | [diff] [blame] | 3519 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3520 | return 0; |
| 3521 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3522 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3523 | static int scsi_debug_slave_configure(struct scsi_device *sdp) |
| 3524 | { |
| 3525 | struct sdebug_dev_info *devip; |
FUJITA Tomonori | a34c4e9 | 2008-03-25 09:26:50 +0900 | [diff] [blame] | 3526 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3527 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
Hannes Reinecke | 9cb78c1 | 2014-06-25 15:27:36 +0200 | [diff] [blame] | 3528 | printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %llu>\n", |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3529 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
| 3530 | if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) |
| 3531 | sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; |
| 3532 | devip = devInfoReg(sdp); |
| 3533 | if (NULL == devip) |
| 3534 | return 1; /* no resources, will be marked offline */ |
Christoph Hellwig | c8b09f6 | 2014-11-03 20:15:14 +0100 | [diff] [blame] | 3535 | sdp->hostdata = devip; |
Akinobu Mita | 6bb5e6e | 2014-06-02 22:56:49 +0900 | [diff] [blame] | 3536 | blk_queue_max_segment_size(sdp->request_queue, -1U); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 3537 | if (scsi_debug_no_uld) |
| 3538 | sdp->no_uld_attach = 1; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3539 | return 0; |
| 3540 | } |
| 3541 | |
| 3542 | static void scsi_debug_slave_destroy(struct scsi_device *sdp) |
| 3543 | { |
| 3544 | struct sdebug_dev_info *devip = |
| 3545 | (struct sdebug_dev_info *)sdp->hostdata; |
| 3546 | |
| 3547 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
Hannes Reinecke | 9cb78c1 | 2014-06-25 15:27:36 +0200 | [diff] [blame] | 3548 | printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %llu>\n", |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3549 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
| 3550 | if (devip) { |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 3551 | /* make this slot available for re-use */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3552 | devip->used = false; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3553 | sdp->hostdata = NULL; |
| 3554 | } |
| 3555 | } |
| 3556 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3557 | /* Returns 1 if cmnd found (deletes its timer or tasklet), else returns 0 */ |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3558 | static int stop_queued_cmnd(struct scsi_cmnd *cmnd) |
| 3559 | { |
| 3560 | unsigned long iflags; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3561 | int k, qmax, r_qmax; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3562 | struct sdebug_queued_cmd *sqcp; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3563 | struct sdebug_dev_info *devip; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3564 | |
| 3565 | spin_lock_irqsave(&queued_arr_lock, iflags); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3566 | qmax = scsi_debug_max_queue; |
| 3567 | r_qmax = atomic_read(&retired_max_queue); |
| 3568 | if (r_qmax > qmax) |
| 3569 | qmax = r_qmax; |
| 3570 | for (k = 0; k < qmax; ++k) { |
| 3571 | if (test_bit(k, queued_in_use_bm)) { |
| 3572 | sqcp = &queued_arr[k]; |
| 3573 | if (cmnd == sqcp->a_cmnd) { |
Douglas Gilbert | db525fc | 2014-08-31 19:09:59 -0400 | [diff] [blame] | 3574 | devip = (struct sdebug_dev_info *) |
| 3575 | cmnd->device->hostdata; |
| 3576 | if (devip) |
| 3577 | atomic_dec(&devip->num_in_q); |
| 3578 | sqcp->a_cmnd = NULL; |
| 3579 | spin_unlock_irqrestore(&queued_arr_lock, |
| 3580 | iflags); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3581 | if (scsi_debug_ndelay > 0) { |
| 3582 | if (sqcp->sd_hrtp) |
| 3583 | hrtimer_cancel( |
| 3584 | &sqcp->sd_hrtp->hrt); |
| 3585 | } else if (scsi_debug_delay > 0) { |
| 3586 | if (sqcp->cmnd_timerp) |
| 3587 | del_timer_sync( |
| 3588 | sqcp->cmnd_timerp); |
| 3589 | } else if (scsi_debug_delay < 0) { |
| 3590 | if (sqcp->tletp) |
| 3591 | tasklet_kill(sqcp->tletp); |
| 3592 | } |
Douglas Gilbert | db525fc | 2014-08-31 19:09:59 -0400 | [diff] [blame] | 3593 | clear_bit(k, queued_in_use_bm); |
| 3594 | return 1; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3595 | } |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3596 | } |
| 3597 | } |
| 3598 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
Douglas Gilbert | db525fc | 2014-08-31 19:09:59 -0400 | [diff] [blame] | 3599 | return 0; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3600 | } |
| 3601 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3602 | /* Deletes (stops) timers or tasklets of all queued commands */ |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3603 | static void stop_all_queued(void) |
| 3604 | { |
| 3605 | unsigned long iflags; |
| 3606 | int k; |
| 3607 | struct sdebug_queued_cmd *sqcp; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3608 | struct sdebug_dev_info *devip; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3609 | |
| 3610 | spin_lock_irqsave(&queued_arr_lock, iflags); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3611 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 3612 | if (test_bit(k, queued_in_use_bm)) { |
| 3613 | sqcp = &queued_arr[k]; |
| 3614 | if (sqcp->a_cmnd) { |
Douglas Gilbert | db525fc | 2014-08-31 19:09:59 -0400 | [diff] [blame] | 3615 | devip = (struct sdebug_dev_info *) |
| 3616 | sqcp->a_cmnd->device->hostdata; |
| 3617 | if (devip) |
| 3618 | atomic_dec(&devip->num_in_q); |
| 3619 | sqcp->a_cmnd = NULL; |
| 3620 | spin_unlock_irqrestore(&queued_arr_lock, |
| 3621 | iflags); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3622 | if (scsi_debug_ndelay > 0) { |
| 3623 | if (sqcp->sd_hrtp) |
| 3624 | hrtimer_cancel( |
| 3625 | &sqcp->sd_hrtp->hrt); |
| 3626 | } else if (scsi_debug_delay > 0) { |
| 3627 | if (sqcp->cmnd_timerp) |
| 3628 | del_timer_sync( |
| 3629 | sqcp->cmnd_timerp); |
| 3630 | } else if (scsi_debug_delay < 0) { |
| 3631 | if (sqcp->tletp) |
| 3632 | tasklet_kill(sqcp->tletp); |
| 3633 | } |
Douglas Gilbert | db525fc | 2014-08-31 19:09:59 -0400 | [diff] [blame] | 3634 | clear_bit(k, queued_in_use_bm); |
| 3635 | spin_lock_irqsave(&queued_arr_lock, iflags); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3636 | } |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3637 | } |
| 3638 | } |
| 3639 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3640 | } |
| 3641 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3642 | /* Free queued command memory on heap */ |
| 3643 | static void free_all_queued(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3644 | { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3645 | unsigned long iflags; |
| 3646 | int k; |
| 3647 | struct sdebug_queued_cmd *sqcp; |
| 3648 | |
| 3649 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 3650 | for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { |
| 3651 | sqcp = &queued_arr[k]; |
| 3652 | kfree(sqcp->cmnd_timerp); |
| 3653 | sqcp->cmnd_timerp = NULL; |
| 3654 | kfree(sqcp->tletp); |
| 3655 | sqcp->tletp = NULL; |
| 3656 | kfree(sqcp->sd_hrtp); |
| 3657 | sqcp->sd_hrtp = NULL; |
| 3658 | } |
| 3659 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3660 | } |
| 3661 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3662 | static int scsi_debug_abort(struct scsi_cmnd *SCpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3663 | { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3664 | ++num_aborts; |
| 3665 | if (SCpnt) { |
| 3666 | if (SCpnt->device && |
| 3667 | (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts)) |
| 3668 | sdev_printk(KERN_INFO, SCpnt->device, "%s\n", |
| 3669 | __func__); |
| 3670 | stop_queued_cmnd(SCpnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3671 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3672 | return SUCCESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3673 | } |
| 3674 | |
| 3675 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) |
| 3676 | { |
| 3677 | struct sdebug_dev_info * devip; |
| 3678 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3679 | ++num_dev_resets; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3680 | if (SCpnt && SCpnt->device) { |
| 3681 | struct scsi_device *sdp = SCpnt->device; |
| 3682 | |
| 3683 | if (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts) |
| 3684 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); |
| 3685 | devip = devInfoReg(sdp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3686 | if (devip) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3687 | set_bit(SDEBUG_UA_POR, devip->uas_bm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3688 | } |
| 3689 | return SUCCESS; |
| 3690 | } |
| 3691 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3692 | static int scsi_debug_target_reset(struct scsi_cmnd *SCpnt) |
| 3693 | { |
| 3694 | struct sdebug_host_info *sdbg_host; |
| 3695 | struct sdebug_dev_info *devip; |
| 3696 | struct scsi_device *sdp; |
| 3697 | struct Scsi_Host *hp; |
| 3698 | int k = 0; |
| 3699 | |
| 3700 | ++num_target_resets; |
| 3701 | if (!SCpnt) |
| 3702 | goto lie; |
| 3703 | sdp = SCpnt->device; |
| 3704 | if (!sdp) |
| 3705 | goto lie; |
| 3706 | if (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts) |
| 3707 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); |
| 3708 | hp = sdp->host; |
| 3709 | if (!hp) |
| 3710 | goto lie; |
| 3711 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
| 3712 | if (sdbg_host) { |
| 3713 | list_for_each_entry(devip, |
| 3714 | &sdbg_host->dev_info_list, |
| 3715 | dev_list) |
| 3716 | if (devip->target == sdp->id) { |
| 3717 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); |
| 3718 | ++k; |
| 3719 | } |
| 3720 | } |
| 3721 | if (SCSI_DEBUG_OPT_RESET_NOISE & scsi_debug_opts) |
| 3722 | sdev_printk(KERN_INFO, sdp, |
| 3723 | "%s: %d device(s) found in target\n", __func__, k); |
| 3724 | lie: |
| 3725 | return SUCCESS; |
| 3726 | } |
| 3727 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3728 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) |
| 3729 | { |
| 3730 | struct sdebug_host_info *sdbg_host; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3731 | struct sdebug_dev_info *devip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3732 | struct scsi_device * sdp; |
| 3733 | struct Scsi_Host * hp; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3734 | int k = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3735 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3736 | ++num_bus_resets; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3737 | if (!(SCpnt && SCpnt->device)) |
| 3738 | goto lie; |
| 3739 | sdp = SCpnt->device; |
| 3740 | if (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts) |
| 3741 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); |
| 3742 | hp = sdp->host; |
| 3743 | if (hp) { |
FUJITA Tomonori | d1e4c9c | 2008-03-02 18:30:18 +0900 | [diff] [blame] | 3744 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3745 | if (sdbg_host) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3746 | list_for_each_entry(devip, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3747 | &sdbg_host->dev_info_list, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3748 | dev_list) { |
| 3749 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); |
| 3750 | ++k; |
| 3751 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3752 | } |
| 3753 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3754 | if (SCSI_DEBUG_OPT_RESET_NOISE & scsi_debug_opts) |
| 3755 | sdev_printk(KERN_INFO, sdp, |
| 3756 | "%s: %d device(s) found in host\n", __func__, k); |
| 3757 | lie: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3758 | return SUCCESS; |
| 3759 | } |
| 3760 | |
| 3761 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) |
| 3762 | { |
| 3763 | struct sdebug_host_info * sdbg_host; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3764 | struct sdebug_dev_info *devip; |
| 3765 | int k = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3766 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3767 | ++num_host_resets; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3768 | if ((SCpnt->device) && (SCSI_DEBUG_OPT_ALL_NOISE & scsi_debug_opts)) |
| 3769 | sdev_printk(KERN_INFO, SCpnt->device, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3770 | spin_lock(&sdebug_host_list_lock); |
| 3771 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3772 | list_for_each_entry(devip, &sdbg_host->dev_info_list, |
| 3773 | dev_list) { |
| 3774 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); |
| 3775 | ++k; |
| 3776 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3777 | } |
| 3778 | spin_unlock(&sdebug_host_list_lock); |
| 3779 | stop_all_queued(); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3780 | if (SCSI_DEBUG_OPT_RESET_NOISE & scsi_debug_opts) |
| 3781 | sdev_printk(KERN_INFO, SCpnt->device, |
| 3782 | "%s: %d device(s) found\n", __func__, k); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3783 | return SUCCESS; |
| 3784 | } |
| 3785 | |
FUJITA Tomonori | f58b0ef | 2008-03-30 00:59:54 +0900 | [diff] [blame] | 3786 | static void __init sdebug_build_parts(unsigned char *ramp, |
FUJITA Tomonori | 5f2578e | 2008-03-30 00:59:57 +0900 | [diff] [blame] | 3787 | unsigned long store_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3788 | { |
| 3789 | struct partition * pp; |
| 3790 | int starts[SDEBUG_MAX_PARTS + 2]; |
| 3791 | int sectors_per_part, num_sectors, k; |
| 3792 | int heads_by_sects, start_sec, end_sec; |
| 3793 | |
| 3794 | /* assume partition table already zeroed */ |
FUJITA Tomonori | f58b0ef | 2008-03-30 00:59:54 +0900 | [diff] [blame] | 3795 | if ((scsi_debug_num_parts < 1) || (store_size < 1048576)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3796 | return; |
| 3797 | if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { |
| 3798 | scsi_debug_num_parts = SDEBUG_MAX_PARTS; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3799 | pr_warn("%s: reducing partitions to %d\n", __func__, |
| 3800 | SDEBUG_MAX_PARTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3801 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3802 | num_sectors = (int)sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3803 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
| 3804 | / scsi_debug_num_parts; |
| 3805 | heads_by_sects = sdebug_heads * sdebug_sectors_per; |
| 3806 | starts[0] = sdebug_sectors_per; |
| 3807 | for (k = 1; k < scsi_debug_num_parts; ++k) |
| 3808 | starts[k] = ((k * sectors_per_part) / heads_by_sects) |
| 3809 | * heads_by_sects; |
| 3810 | starts[scsi_debug_num_parts] = num_sectors; |
| 3811 | starts[scsi_debug_num_parts + 1] = 0; |
| 3812 | |
| 3813 | ramp[510] = 0x55; /* magic partition markings */ |
| 3814 | ramp[511] = 0xAA; |
| 3815 | pp = (struct partition *)(ramp + 0x1be); |
| 3816 | for (k = 0; starts[k + 1]; ++k, ++pp) { |
| 3817 | start_sec = starts[k]; |
| 3818 | end_sec = starts[k + 1] - 1; |
| 3819 | pp->boot_ind = 0; |
| 3820 | |
| 3821 | pp->cyl = start_sec / heads_by_sects; |
| 3822 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) |
| 3823 | / sdebug_sectors_per; |
| 3824 | pp->sector = (start_sec % sdebug_sectors_per) + 1; |
| 3825 | |
| 3826 | pp->end_cyl = end_sec / heads_by_sects; |
| 3827 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) |
| 3828 | / sdebug_sectors_per; |
| 3829 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; |
| 3830 | |
Akinobu Mita | 150c354 | 2013-08-26 22:08:40 +0900 | [diff] [blame] | 3831 | pp->start_sect = cpu_to_le32(start_sec); |
| 3832 | pp->nr_sects = cpu_to_le32(end_sec - start_sec + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3833 | pp->sys_ind = 0x83; /* plain Linux partition */ |
| 3834 | } |
| 3835 | } |
| 3836 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3837 | static int |
| 3838 | schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip, |
| 3839 | int scsi_result, int delta_jiff) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3840 | { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3841 | unsigned long iflags; |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 3842 | int k, num_in_q, qdepth, inject; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3843 | struct sdebug_queued_cmd *sqcp = NULL; |
| 3844 | struct scsi_device *sdp = cmnd->device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3845 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3846 | if (NULL == cmnd || NULL == devip) { |
| 3847 | pr_warn("%s: called with NULL cmnd or devip pointer\n", |
| 3848 | __func__); |
| 3849 | /* no particularly good error to report back */ |
| 3850 | return SCSI_MLQUEUE_HOST_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3851 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3852 | if ((scsi_result) && (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
| 3853 | sdev_printk(KERN_INFO, sdp, "%s: non-zero result=0x%x\n", |
| 3854 | __func__, scsi_result); |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 3855 | if (delta_jiff == 0) |
| 3856 | goto respond_in_thread; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3857 | |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 3858 | /* schedule the response at a later time if resources permit */ |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3859 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 3860 | num_in_q = atomic_read(&devip->num_in_q); |
| 3861 | qdepth = cmnd->device->queue_depth; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3862 | inject = 0; |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 3863 | if ((qdepth > 0) && (num_in_q >= qdepth)) { |
| 3864 | if (scsi_result) { |
| 3865 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 3866 | goto respond_in_thread; |
| 3867 | } else |
| 3868 | scsi_result = device_qfull_result; |
| 3869 | } else if ((scsi_debug_every_nth != 0) && |
| 3870 | (SCSI_DEBUG_OPT_RARE_TSF & scsi_debug_opts) && |
| 3871 | (scsi_result == 0)) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3872 | if ((num_in_q == (qdepth - 1)) && |
| 3873 | (atomic_inc_return(&sdebug_a_tsf) >= |
| 3874 | abs(scsi_debug_every_nth))) { |
| 3875 | atomic_set(&sdebug_a_tsf, 0); |
| 3876 | inject = 1; |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 3877 | scsi_result = device_qfull_result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3878 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3879 | } |
| 3880 | |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 3881 | k = find_first_zero_bit(queued_in_use_bm, scsi_debug_max_queue); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3882 | if (k >= scsi_debug_max_queue) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3883 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 3884 | if (scsi_result) |
| 3885 | goto respond_in_thread; |
| 3886 | else if (SCSI_DEBUG_OPT_ALL_TSF & scsi_debug_opts) |
| 3887 | scsi_result = device_qfull_result; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3888 | if (SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) |
| 3889 | sdev_printk(KERN_INFO, sdp, |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 3890 | "%s: max_queue=%d exceeded, %s\n", |
| 3891 | __func__, scsi_debug_max_queue, |
| 3892 | (scsi_result ? "status: TASK SET FULL" : |
| 3893 | "report: host busy")); |
| 3894 | if (scsi_result) |
| 3895 | goto respond_in_thread; |
| 3896 | else |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3897 | return SCSI_MLQUEUE_HOST_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3898 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3899 | __set_bit(k, queued_in_use_bm); |
| 3900 | atomic_inc(&devip->num_in_q); |
| 3901 | sqcp = &queued_arr[k]; |
| 3902 | sqcp->a_cmnd = cmnd; |
| 3903 | cmnd->result = scsi_result; |
| 3904 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 3905 | if (delta_jiff > 0) { |
| 3906 | if (NULL == sqcp->cmnd_timerp) { |
| 3907 | sqcp->cmnd_timerp = kmalloc(sizeof(struct timer_list), |
| 3908 | GFP_ATOMIC); |
| 3909 | if (NULL == sqcp->cmnd_timerp) |
| 3910 | return SCSI_MLQUEUE_HOST_BUSY; |
| 3911 | init_timer(sqcp->cmnd_timerp); |
| 3912 | } |
| 3913 | sqcp->cmnd_timerp->function = sdebug_q_cmd_complete; |
| 3914 | sqcp->cmnd_timerp->data = k; |
| 3915 | sqcp->cmnd_timerp->expires = get_jiffies_64() + delta_jiff; |
| 3916 | add_timer(sqcp->cmnd_timerp); |
| 3917 | } else if (scsi_debug_ndelay > 0) { |
| 3918 | ktime_t kt = ktime_set(0, scsi_debug_ndelay); |
| 3919 | struct sdebug_hrtimer *sd_hp = sqcp->sd_hrtp; |
| 3920 | |
| 3921 | if (NULL == sd_hp) { |
| 3922 | sd_hp = kmalloc(sizeof(*sd_hp), GFP_ATOMIC); |
| 3923 | if (NULL == sd_hp) |
| 3924 | return SCSI_MLQUEUE_HOST_BUSY; |
| 3925 | sqcp->sd_hrtp = sd_hp; |
| 3926 | hrtimer_init(&sd_hp->hrt, CLOCK_MONOTONIC, |
| 3927 | HRTIMER_MODE_REL); |
| 3928 | sd_hp->hrt.function = sdebug_q_cmd_hrt_complete; |
| 3929 | sd_hp->qa_indx = k; |
| 3930 | } |
| 3931 | hrtimer_start(&sd_hp->hrt, kt, HRTIMER_MODE_REL); |
| 3932 | } else { /* delay < 0 */ |
| 3933 | if (NULL == sqcp->tletp) { |
| 3934 | sqcp->tletp = kmalloc(sizeof(*sqcp->tletp), |
| 3935 | GFP_ATOMIC); |
| 3936 | if (NULL == sqcp->tletp) |
| 3937 | return SCSI_MLQUEUE_HOST_BUSY; |
| 3938 | tasklet_init(sqcp->tletp, |
| 3939 | sdebug_q_cmd_complete, k); |
| 3940 | } |
| 3941 | if (-1 == delta_jiff) |
| 3942 | tasklet_hi_schedule(sqcp->tletp); |
| 3943 | else |
| 3944 | tasklet_schedule(sqcp->tletp); |
| 3945 | } |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 3946 | if ((SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) && |
| 3947 | (scsi_result == device_qfull_result)) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3948 | sdev_printk(KERN_INFO, sdp, |
| 3949 | "%s: num_in_q=%d +1, %s%s\n", __func__, |
| 3950 | num_in_q, (inject ? "<inject> " : ""), |
| 3951 | "status: TASK SET FULL"); |
| 3952 | return 0; |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 3953 | |
| 3954 | respond_in_thread: /* call back to mid-layer using invocation thread */ |
| 3955 | cmnd->result = scsi_result; |
| 3956 | cmnd->scsi_done(cmnd); |
| 3957 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3958 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3959 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 3960 | /* Note: The following macros create attribute files in the |
| 3961 | /sys/module/scsi_debug/parameters directory. Unfortunately this |
| 3962 | driver is unaware of a change and cannot trigger auxiliary actions |
| 3963 | as it can when the corresponding attribute in the |
| 3964 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. |
| 3965 | */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3966 | module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 3967 | module_param_named(ato, scsi_debug_ato, int, S_IRUGO); |
Akinobu Mita | 0759c66 | 2014-02-26 22:57:04 +0900 | [diff] [blame] | 3968 | module_param_named(clustering, scsi_debug_clustering, bool, S_IRUGO | S_IWUSR); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3969 | module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); |
| 3970 | module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 3971 | module_param_named(dif, scsi_debug_dif, int, S_IRUGO); |
| 3972 | module_param_named(dix, scsi_debug_dix, int, S_IRUGO); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3973 | module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); |
| 3974 | 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] | 3975 | module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); |
Akinobu Mita | 68aee7b | 2013-09-18 21:27:27 +0900 | [diff] [blame] | 3976 | module_param_named(guard, scsi_debug_guard, uint, S_IRUGO); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3977 | module_param_named(host_lock, scsi_debug_host_lock, bool, S_IRUGO | S_IWUSR); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 3978 | module_param_named(lbpu, scsi_debug_lbpu, int, S_IRUGO); |
| 3979 | module_param_named(lbpws, scsi_debug_lbpws, int, S_IRUGO); |
| 3980 | module_param_named(lbpws10, scsi_debug_lbpws10, int, S_IRUGO); |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 3981 | module_param_named(lbprz, scsi_debug_lbprz, int, S_IRUGO); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 3982 | module_param_named(lowest_aligned, scsi_debug_lowest_aligned, int, S_IRUGO); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3983 | 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] | 3984 | module_param_named(max_queue, scsi_debug_max_queue, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3985 | module_param_named(ndelay, scsi_debug_ndelay, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3986 | 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] | 3987 | module_param_named(no_uld, scsi_debug_no_uld, int, S_IRUGO); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3988 | module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); |
| 3989 | module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 3990 | module_param_named(opt_blks, scsi_debug_opt_blks, int, S_IRUGO); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3991 | module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 3992 | module_param_named(physblk_exp, scsi_debug_physblk_exp, int, S_IRUGO); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3993 | module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 3994 | module_param_named(removable, scsi_debug_removable, bool, S_IRUGO | S_IWUSR); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3995 | module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 3996 | module_param_named(sector_size, scsi_debug_sector_size, int, S_IRUGO); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3997 | module_param_named(strict, scsi_debug_strict, bool, S_IRUGO | S_IWUSR); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 3998 | module_param_named(unmap_alignment, scsi_debug_unmap_alignment, int, S_IRUGO); |
| 3999 | module_param_named(unmap_granularity, scsi_debug_unmap_granularity, int, S_IRUGO); |
| 4000 | module_param_named(unmap_max_blocks, scsi_debug_unmap_max_blocks, int, S_IRUGO); |
| 4001 | module_param_named(unmap_max_desc, scsi_debug_unmap_max_desc, int, S_IRUGO); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4002 | 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] | 4003 | module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, |
| 4004 | S_IRUGO | S_IWUSR); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4005 | module_param_named(write_same_length, scsi_debug_write_same_length, int, |
| 4006 | S_IRUGO | S_IWUSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4007 | |
| 4008 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); |
| 4009 | MODULE_DESCRIPTION("SCSI debug adapter driver"); |
| 4010 | MODULE_LICENSE("GPL"); |
| 4011 | MODULE_VERSION(SCSI_DEBUG_VERSION); |
| 4012 | |
| 4013 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4014 | MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)"); |
Akinobu Mita | 0759c66 | 2014-02-26 22:57:04 +0900 | [diff] [blame] | 4015 | MODULE_PARM_DESC(clustering, "when set enables larger transfers (def=0)"); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4016 | MODULE_PARM_DESC(delay, "response delay (def=1 jiffy); 0:imm, -1,-2:tiny"); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 4017 | MODULE_PARM_DESC(dev_size_mb, "size in MiB of ram shared by devs(def=8)"); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4018 | MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); |
| 4019 | MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4020 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); |
Randy Dunlap | beb87c3 | 2007-06-11 11:36:40 -0700 | [diff] [blame] | 4021 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4022 | MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4023 | MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)"); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4024 | MODULE_PARM_DESC(host_lock, "use host_lock around all commands (def=0)"); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4025 | MODULE_PARM_DESC(lbpu, "enable LBP, support UNMAP command (def=0)"); |
| 4026 | MODULE_PARM_DESC(lbpws, "enable LBP, support WRITE SAME(16) with UNMAP bit (def=0)"); |
| 4027 | MODULE_PARM_DESC(lbpws10, "enable LBP, support WRITE SAME(10) with UNMAP bit (def=0)"); |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 4028 | MODULE_PARM_DESC(lbprz, "unmapped blocks return 0 on read (def=1)"); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4029 | MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4030 | MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4031 | MODULE_PARM_DESC(max_queue, "max number of queued commands (1 to max(def))"); |
| 4032 | MODULE_PARM_DESC(ndelay, "response delay in nanoseconds (def=0 -> ignore)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4033 | 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] | 4034 | 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] | 4035 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4036 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4037 | MODULE_PARM_DESC(opt_blks, "optimal transfer length in block (def=64)"); |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 4038 | MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4039 | MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4040 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 4041 | MODULE_PARM_DESC(removable, "claim to have removable media (def=0)"); |
Douglas Gilbert | e46b034 | 2014-08-05 12:21:53 +0200 | [diff] [blame] | 4042 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=6[SPC-4])"); |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 4043 | MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)"); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 4044 | MODULE_PARM_DESC(strict, "stricter checks: reserved field in cdb (def=0)"); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4045 | MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)"); |
| 4046 | MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=1)"); |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 4047 | MODULE_PARM_DESC(unmap_max_blocks, "max # of blocks can be unmapped in one cmd (def=0xffffffff)"); |
| 4048 | MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=256)"); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 4049 | MODULE_PARM_DESC(virtual_gb, "virtual gigabyte (GiB) size (def=0 -> use dev_size_mb)"); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4050 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
| 4051 | MODULE_PARM_DESC(write_same_length, "Maximum blocks per WRITE SAME cmd (def=0xffff)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4052 | |
| 4053 | static char sdebug_info[256]; |
| 4054 | |
| 4055 | static const char * scsi_debug_info(struct Scsi_Host * shp) |
| 4056 | { |
| 4057 | sprintf(sdebug_info, "scsi_debug, version %s [%s], " |
| 4058 | "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, |
| 4059 | scsi_debug_version_date, scsi_debug_dev_size_mb, |
| 4060 | scsi_debug_opts); |
| 4061 | return sdebug_info; |
| 4062 | } |
| 4063 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4064 | /* 'echo <val> > /proc/scsi/scsi_debug/<host_id>' writes to opts */ |
Al Viro | c8ed555 | 2013-03-31 01:46:06 -0400 | [diff] [blame] | 4065 | static int scsi_debug_write_info(struct Scsi_Host *host, char *buffer, int length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4066 | { |
Al Viro | c8ed555 | 2013-03-31 01:46:06 -0400 | [diff] [blame] | 4067 | char arr[16]; |
| 4068 | int opts; |
| 4069 | int minLen = length > 15 ? 15 : length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4070 | |
Al Viro | c8ed555 | 2013-03-31 01:46:06 -0400 | [diff] [blame] | 4071 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 4072 | return -EACCES; |
| 4073 | memcpy(arr, buffer, minLen); |
| 4074 | arr[minLen] = '\0'; |
| 4075 | if (1 != sscanf(arr, "%d", &opts)) |
| 4076 | return -EINVAL; |
| 4077 | scsi_debug_opts = opts; |
| 4078 | if (scsi_debug_every_nth != 0) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4079 | atomic_set(&sdebug_cmnd_count, 0); |
Al Viro | c8ed555 | 2013-03-31 01:46:06 -0400 | [diff] [blame] | 4080 | return length; |
| 4081 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4082 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4083 | /* Output seen with 'cat /proc/scsi/scsi_debug/<host_id>'. It will be the |
| 4084 | * same for each scsi_debug host (if more than one). Some of the counters |
| 4085 | * output are not atomics so might be inaccurate in a busy system. */ |
Al Viro | c8ed555 | 2013-03-31 01:46:06 -0400 | [diff] [blame] | 4086 | static int scsi_debug_show_info(struct seq_file *m, struct Scsi_Host *host) |
| 4087 | { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4088 | int f, l; |
| 4089 | char b[32]; |
| 4090 | |
| 4091 | if (scsi_debug_every_nth > 0) |
| 4092 | snprintf(b, sizeof(b), " (curr:%d)", |
| 4093 | ((SCSI_DEBUG_OPT_RARE_TSF & scsi_debug_opts) ? |
| 4094 | atomic_read(&sdebug_a_tsf) : |
| 4095 | atomic_read(&sdebug_cmnd_count))); |
| 4096 | else |
| 4097 | b[0] = '\0'; |
| 4098 | |
| 4099 | seq_printf(m, "scsi_debug adapter driver, version %s [%s]\n" |
| 4100 | "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " |
| 4101 | "every_nth=%d%s\n" |
| 4102 | "delay=%d, ndelay=%d, max_luns=%d, q_completions=%d\n" |
| 4103 | "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" |
| 4104 | "command aborts=%d; RESETs: device=%d, target=%d, bus=%d, " |
| 4105 | "host=%d\ndix_reads=%d dix_writes=%d dif_errors=%d " |
| 4106 | "usec_in_jiffy=%lu\n", |
| 4107 | SCSI_DEBUG_VERSION, scsi_debug_version_date, |
| 4108 | scsi_debug_num_tgts, scsi_debug_dev_size_mb, scsi_debug_opts, |
| 4109 | scsi_debug_every_nth, b, scsi_debug_delay, scsi_debug_ndelay, |
| 4110 | scsi_debug_max_luns, atomic_read(&sdebug_completions), |
| 4111 | scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads, |
| 4112 | sdebug_sectors_per, num_aborts, num_dev_resets, |
| 4113 | num_target_resets, num_bus_resets, num_host_resets, |
| 4114 | dix_reads, dix_writes, dif_errors, TICK_NSEC / 1000); |
| 4115 | |
| 4116 | f = find_first_bit(queued_in_use_bm, scsi_debug_max_queue); |
| 4117 | if (f != scsi_debug_max_queue) { |
| 4118 | l = find_last_bit(queued_in_use_bm, scsi_debug_max_queue); |
| 4119 | seq_printf(m, " %s BUSY: first,last bits set: %d,%d\n", |
| 4120 | "queued_in_use_bm", f, l); |
| 4121 | } |
Al Viro | c8ed555 | 2013-03-31 01:46:06 -0400 | [diff] [blame] | 4122 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4123 | } |
| 4124 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4125 | static ssize_t delay_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4126 | { |
| 4127 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); |
| 4128 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4129 | /* Returns -EBUSY if delay is being changed and commands are queued */ |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4130 | static ssize_t delay_store(struct device_driver *ddp, const char *buf, |
| 4131 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4132 | { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4133 | int delay, res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4134 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4135 | if ((count > 0) && (1 == sscanf(buf, "%d", &delay))) { |
| 4136 | res = count; |
| 4137 | if (scsi_debug_delay != delay) { |
| 4138 | unsigned long iflags; |
| 4139 | int k; |
| 4140 | |
| 4141 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 4142 | k = find_first_bit(queued_in_use_bm, |
| 4143 | scsi_debug_max_queue); |
| 4144 | if (k != scsi_debug_max_queue) |
| 4145 | res = -EBUSY; /* have queued commands */ |
| 4146 | else { |
| 4147 | scsi_debug_delay = delay; |
| 4148 | scsi_debug_ndelay = 0; |
| 4149 | } |
| 4150 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4151 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4152 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4153 | } |
| 4154 | return -EINVAL; |
| 4155 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4156 | static DRIVER_ATTR_RW(delay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4157 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4158 | static ssize_t ndelay_show(struct device_driver *ddp, char *buf) |
| 4159 | { |
| 4160 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ndelay); |
| 4161 | } |
| 4162 | /* Returns -EBUSY if ndelay is being changed and commands are queued */ |
| 4163 | /* If > 0 and accepted then scsi_debug_delay is set to DELAY_OVERRIDDEN */ |
| 4164 | static ssize_t ndelay_store(struct device_driver *ddp, const char *buf, |
| 4165 | size_t count) |
| 4166 | { |
| 4167 | unsigned long iflags; |
| 4168 | int ndelay, res, k; |
| 4169 | |
| 4170 | if ((count > 0) && (1 == sscanf(buf, "%d", &ndelay)) && |
| 4171 | (ndelay >= 0) && (ndelay < 1000000000)) { |
| 4172 | res = count; |
| 4173 | if (scsi_debug_ndelay != ndelay) { |
| 4174 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 4175 | k = find_first_bit(queued_in_use_bm, |
| 4176 | scsi_debug_max_queue); |
| 4177 | if (k != scsi_debug_max_queue) |
| 4178 | res = -EBUSY; /* have queued commands */ |
| 4179 | else { |
| 4180 | scsi_debug_ndelay = ndelay; |
| 4181 | scsi_debug_delay = ndelay ? DELAY_OVERRIDDEN |
| 4182 | : DEF_DELAY; |
| 4183 | } |
| 4184 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 4185 | } |
| 4186 | return res; |
| 4187 | } |
| 4188 | return -EINVAL; |
| 4189 | } |
| 4190 | static DRIVER_ATTR_RW(ndelay); |
| 4191 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4192 | static ssize_t opts_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4193 | { |
| 4194 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); |
| 4195 | } |
| 4196 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4197 | static ssize_t opts_store(struct device_driver *ddp, const char *buf, |
| 4198 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4199 | { |
| 4200 | int opts; |
| 4201 | char work[20]; |
| 4202 | |
| 4203 | if (1 == sscanf(buf, "%10s", work)) { |
Rasmus Villemoes | 48a9687 | 2014-10-13 15:54:44 -0700 | [diff] [blame] | 4204 | if (0 == strncasecmp(work,"0x", 2)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4205 | if (1 == sscanf(&work[2], "%x", &opts)) |
| 4206 | goto opts_done; |
| 4207 | } else { |
| 4208 | if (1 == sscanf(work, "%d", &opts)) |
| 4209 | goto opts_done; |
| 4210 | } |
| 4211 | } |
| 4212 | return -EINVAL; |
| 4213 | opts_done: |
| 4214 | scsi_debug_opts = opts; |
Douglas Gilbert | 817fd66 | 2014-11-24 20:18:02 -0500 | [diff] [blame] | 4215 | if (SCSI_DEBUG_OPT_RECOVERED_ERR & opts) |
| 4216 | sdebug_any_injecting_opt = true; |
| 4217 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & opts) |
| 4218 | sdebug_any_injecting_opt = true; |
| 4219 | else if (SCSI_DEBUG_OPT_DIF_ERR & opts) |
| 4220 | sdebug_any_injecting_opt = true; |
| 4221 | else if (SCSI_DEBUG_OPT_DIX_ERR & opts) |
| 4222 | sdebug_any_injecting_opt = true; |
| 4223 | else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & opts) |
| 4224 | sdebug_any_injecting_opt = true; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4225 | atomic_set(&sdebug_cmnd_count, 0); |
| 4226 | atomic_set(&sdebug_a_tsf, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4227 | return count; |
| 4228 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4229 | static DRIVER_ATTR_RW(opts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4230 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4231 | static ssize_t ptype_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4232 | { |
| 4233 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); |
| 4234 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4235 | static ssize_t ptype_store(struct device_driver *ddp, const char *buf, |
| 4236 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4237 | { |
| 4238 | int n; |
| 4239 | |
| 4240 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 4241 | scsi_debug_ptype = n; |
| 4242 | return count; |
| 4243 | } |
| 4244 | return -EINVAL; |
| 4245 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4246 | static DRIVER_ATTR_RW(ptype); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4247 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4248 | static ssize_t dsense_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4249 | { |
| 4250 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); |
| 4251 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4252 | static ssize_t dsense_store(struct device_driver *ddp, const char *buf, |
| 4253 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4254 | { |
| 4255 | int n; |
| 4256 | |
| 4257 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 4258 | scsi_debug_dsense = n; |
| 4259 | return count; |
| 4260 | } |
| 4261 | return -EINVAL; |
| 4262 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4263 | static DRIVER_ATTR_RW(dsense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4264 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4265 | static ssize_t fake_rw_show(struct device_driver *ddp, char *buf) |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4266 | { |
| 4267 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); |
| 4268 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4269 | static ssize_t fake_rw_store(struct device_driver *ddp, const char *buf, |
| 4270 | size_t count) |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4271 | { |
| 4272 | int n; |
| 4273 | |
| 4274 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4275 | n = (n > 0); |
| 4276 | scsi_debug_fake_rw = (scsi_debug_fake_rw > 0); |
| 4277 | if (scsi_debug_fake_rw != n) { |
| 4278 | if ((0 == n) && (NULL == fake_storep)) { |
| 4279 | unsigned long sz = |
| 4280 | (unsigned long)scsi_debug_dev_size_mb * |
| 4281 | 1048576; |
| 4282 | |
| 4283 | fake_storep = vmalloc(sz); |
| 4284 | if (NULL == fake_storep) { |
| 4285 | pr_err("%s: out of memory, 9\n", |
| 4286 | __func__); |
| 4287 | return -ENOMEM; |
| 4288 | } |
| 4289 | memset(fake_storep, 0, sz); |
| 4290 | } |
| 4291 | scsi_debug_fake_rw = n; |
| 4292 | } |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4293 | return count; |
| 4294 | } |
| 4295 | return -EINVAL; |
| 4296 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4297 | static DRIVER_ATTR_RW(fake_rw); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4298 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4299 | static ssize_t no_lun_0_show(struct device_driver *ddp, char *buf) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4300 | { |
| 4301 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); |
| 4302 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4303 | static ssize_t no_lun_0_store(struct device_driver *ddp, const char *buf, |
| 4304 | size_t count) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4305 | { |
| 4306 | int n; |
| 4307 | |
| 4308 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 4309 | scsi_debug_no_lun_0 = n; |
| 4310 | return count; |
| 4311 | } |
| 4312 | return -EINVAL; |
| 4313 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4314 | static DRIVER_ATTR_RW(no_lun_0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4315 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4316 | static ssize_t num_tgts_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4317 | { |
| 4318 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); |
| 4319 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4320 | static ssize_t num_tgts_store(struct device_driver *ddp, const char *buf, |
| 4321 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4322 | { |
| 4323 | int n; |
| 4324 | |
| 4325 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 4326 | scsi_debug_num_tgts = n; |
| 4327 | sdebug_max_tgts_luns(); |
| 4328 | return count; |
| 4329 | } |
| 4330 | return -EINVAL; |
| 4331 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4332 | static DRIVER_ATTR_RW(num_tgts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4333 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4334 | static ssize_t dev_size_mb_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4335 | { |
| 4336 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); |
| 4337 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4338 | static DRIVER_ATTR_RO(dev_size_mb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4339 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4340 | static ssize_t num_parts_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4341 | { |
| 4342 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); |
| 4343 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4344 | static DRIVER_ATTR_RO(num_parts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4345 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4346 | static ssize_t every_nth_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4347 | { |
| 4348 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); |
| 4349 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4350 | static ssize_t every_nth_store(struct device_driver *ddp, const char *buf, |
| 4351 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4352 | { |
| 4353 | int nth; |
| 4354 | |
| 4355 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { |
| 4356 | scsi_debug_every_nth = nth; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4357 | atomic_set(&sdebug_cmnd_count, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4358 | return count; |
| 4359 | } |
| 4360 | return -EINVAL; |
| 4361 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4362 | static DRIVER_ATTR_RW(every_nth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4363 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4364 | static ssize_t max_luns_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4365 | { |
| 4366 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); |
| 4367 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4368 | static ssize_t max_luns_store(struct device_driver *ddp, const char *buf, |
| 4369 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4370 | { |
| 4371 | int n; |
| 4372 | |
| 4373 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 4374 | scsi_debug_max_luns = n; |
| 4375 | sdebug_max_tgts_luns(); |
| 4376 | return count; |
| 4377 | } |
| 4378 | return -EINVAL; |
| 4379 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4380 | static DRIVER_ATTR_RW(max_luns); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4381 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4382 | static ssize_t max_queue_show(struct device_driver *ddp, char *buf) |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4383 | { |
| 4384 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_queue); |
| 4385 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4386 | /* N.B. max_queue can be changed while there are queued commands. In flight |
| 4387 | * commands beyond the new max_queue will be completed. */ |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4388 | static ssize_t max_queue_store(struct device_driver *ddp, const char *buf, |
| 4389 | size_t count) |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4390 | { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4391 | unsigned long iflags; |
| 4392 | int n, k; |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4393 | |
| 4394 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n > 0) && |
| 4395 | (n <= SCSI_DEBUG_CANQUEUE)) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4396 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 4397 | k = find_last_bit(queued_in_use_bm, SCSI_DEBUG_CANQUEUE); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4398 | scsi_debug_max_queue = n; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4399 | if (SCSI_DEBUG_CANQUEUE == k) |
| 4400 | atomic_set(&retired_max_queue, 0); |
| 4401 | else if (k >= n) |
| 4402 | atomic_set(&retired_max_queue, k + 1); |
| 4403 | else |
| 4404 | atomic_set(&retired_max_queue, 0); |
| 4405 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4406 | return count; |
| 4407 | } |
| 4408 | return -EINVAL; |
| 4409 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4410 | static DRIVER_ATTR_RW(max_queue); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4411 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4412 | static ssize_t no_uld_show(struct device_driver *ddp, char *buf) |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4413 | { |
| 4414 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_uld); |
| 4415 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4416 | static DRIVER_ATTR_RO(no_uld); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4417 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4418 | static ssize_t scsi_level_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4419 | { |
| 4420 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); |
| 4421 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4422 | static DRIVER_ATTR_RO(scsi_level); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4423 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4424 | static ssize_t virtual_gb_show(struct device_driver *ddp, char *buf) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4425 | { |
| 4426 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); |
| 4427 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4428 | static ssize_t virtual_gb_store(struct device_driver *ddp, const char *buf, |
| 4429 | size_t count) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4430 | { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 4431 | int n; |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 4432 | bool changed; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4433 | |
| 4434 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 4435 | changed = (scsi_debug_virtual_gb != n); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4436 | scsi_debug_virtual_gb = n; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 4437 | sdebug_capacity = get_sdebug_capacity(); |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 4438 | if (changed) { |
| 4439 | struct sdebug_host_info *sdhp; |
| 4440 | struct sdebug_dev_info *dp; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 4441 | |
Ewan D. Milne | 4bc6b63 | 2014-12-04 11:49:26 -0500 | [diff] [blame] | 4442 | spin_lock(&sdebug_host_list_lock); |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 4443 | list_for_each_entry(sdhp, &sdebug_host_list, |
| 4444 | host_list) { |
| 4445 | list_for_each_entry(dp, &sdhp->dev_info_list, |
| 4446 | dev_list) { |
| 4447 | set_bit(SDEBUG_UA_CAPACITY_CHANGED, |
| 4448 | dp->uas_bm); |
| 4449 | } |
| 4450 | } |
Ewan D. Milne | 4bc6b63 | 2014-12-04 11:49:26 -0500 | [diff] [blame] | 4451 | spin_unlock(&sdebug_host_list_lock); |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 4452 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4453 | return count; |
| 4454 | } |
| 4455 | return -EINVAL; |
| 4456 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4457 | static DRIVER_ATTR_RW(virtual_gb); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4458 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4459 | static ssize_t add_host_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4460 | { |
| 4461 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); |
| 4462 | } |
| 4463 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4464 | static ssize_t add_host_store(struct device_driver *ddp, const char *buf, |
| 4465 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4466 | { |
FUJITA Tomonori | f3df41c | 2008-03-20 11:09:15 +0900 | [diff] [blame] | 4467 | int delta_hosts; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4468 | |
FUJITA Tomonori | f3df41c | 2008-03-20 11:09:15 +0900 | [diff] [blame] | 4469 | if (sscanf(buf, "%d", &delta_hosts) != 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4470 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4471 | if (delta_hosts > 0) { |
| 4472 | do { |
| 4473 | sdebug_add_adapter(); |
| 4474 | } while (--delta_hosts); |
| 4475 | } else if (delta_hosts < 0) { |
| 4476 | do { |
| 4477 | sdebug_remove_adapter(); |
| 4478 | } while (++delta_hosts); |
| 4479 | } |
| 4480 | return count; |
| 4481 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4482 | static DRIVER_ATTR_RW(add_host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4483 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4484 | static ssize_t vpd_use_hostno_show(struct device_driver *ddp, char *buf) |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4485 | { |
| 4486 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); |
| 4487 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4488 | static ssize_t vpd_use_hostno_store(struct device_driver *ddp, const char *buf, |
| 4489 | size_t count) |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4490 | { |
| 4491 | int n; |
| 4492 | |
| 4493 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 4494 | scsi_debug_vpd_use_hostno = n; |
| 4495 | return count; |
| 4496 | } |
| 4497 | return -EINVAL; |
| 4498 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4499 | static DRIVER_ATTR_RW(vpd_use_hostno); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4500 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4501 | static ssize_t sector_size_show(struct device_driver *ddp, char *buf) |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 4502 | { |
| 4503 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_sector_size); |
| 4504 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4505 | static DRIVER_ATTR_RO(sector_size); |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 4506 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4507 | static ssize_t dix_show(struct device_driver *ddp, char *buf) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4508 | { |
| 4509 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dix); |
| 4510 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4511 | static DRIVER_ATTR_RO(dix); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4512 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4513 | static ssize_t dif_show(struct device_driver *ddp, char *buf) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4514 | { |
| 4515 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dif); |
| 4516 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4517 | static DRIVER_ATTR_RO(dif); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4518 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4519 | static ssize_t guard_show(struct device_driver *ddp, char *buf) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4520 | { |
Akinobu Mita | 68aee7b | 2013-09-18 21:27:27 +0900 | [diff] [blame] | 4521 | return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_guard); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4522 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4523 | static DRIVER_ATTR_RO(guard); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4524 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4525 | static ssize_t ato_show(struct device_driver *ddp, char *buf) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4526 | { |
| 4527 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ato); |
| 4528 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4529 | static DRIVER_ATTR_RO(ato); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4530 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4531 | static ssize_t map_show(struct device_driver *ddp, char *buf) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4532 | { |
| 4533 | ssize_t count; |
| 4534 | |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4535 | if (!scsi_debug_lbp()) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4536 | return scnprintf(buf, PAGE_SIZE, "0-%u\n", |
| 4537 | sdebug_store_sectors); |
| 4538 | |
| 4539 | count = bitmap_scnlistprintf(buf, PAGE_SIZE, map_storep, map_size); |
| 4540 | |
| 4541 | buf[count++] = '\n'; |
| 4542 | buf[count++] = 0; |
| 4543 | |
| 4544 | return count; |
| 4545 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4546 | static DRIVER_ATTR_RO(map); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4547 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4548 | static ssize_t removable_show(struct device_driver *ddp, char *buf) |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 4549 | { |
| 4550 | return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_removable ? 1 : 0); |
| 4551 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4552 | static ssize_t removable_store(struct device_driver *ddp, const char *buf, |
| 4553 | size_t count) |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 4554 | { |
| 4555 | int n; |
| 4556 | |
| 4557 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 4558 | scsi_debug_removable = (n > 0); |
| 4559 | return count; |
| 4560 | } |
| 4561 | return -EINVAL; |
| 4562 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4563 | static DRIVER_ATTR_RW(removable); |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 4564 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4565 | static ssize_t host_lock_show(struct device_driver *ddp, char *buf) |
| 4566 | { |
| 4567 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!scsi_debug_host_lock); |
| 4568 | } |
| 4569 | /* Returns -EBUSY if host_lock is being changed and commands are queued */ |
| 4570 | static ssize_t host_lock_store(struct device_driver *ddp, const char *buf, |
| 4571 | size_t count) |
| 4572 | { |
| 4573 | int n, res; |
| 4574 | |
| 4575 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 4576 | bool new_host_lock = (n > 0); |
| 4577 | |
| 4578 | res = count; |
| 4579 | if (new_host_lock != scsi_debug_host_lock) { |
| 4580 | unsigned long iflags; |
| 4581 | int k; |
| 4582 | |
| 4583 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 4584 | k = find_first_bit(queued_in_use_bm, |
| 4585 | scsi_debug_max_queue); |
| 4586 | if (k != scsi_debug_max_queue) |
| 4587 | res = -EBUSY; /* have queued commands */ |
| 4588 | else |
| 4589 | scsi_debug_host_lock = new_host_lock; |
| 4590 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 4591 | } |
| 4592 | return res; |
| 4593 | } |
| 4594 | return -EINVAL; |
| 4595 | } |
| 4596 | static DRIVER_ATTR_RW(host_lock); |
| 4597 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 4598 | static ssize_t strict_show(struct device_driver *ddp, char *buf) |
| 4599 | { |
| 4600 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!scsi_debug_strict); |
| 4601 | } |
| 4602 | static ssize_t strict_store(struct device_driver *ddp, const char *buf, |
| 4603 | size_t count) |
| 4604 | { |
| 4605 | int n; |
| 4606 | |
| 4607 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
| 4608 | scsi_debug_strict = (n > 0); |
| 4609 | return count; |
| 4610 | } |
| 4611 | return -EINVAL; |
| 4612 | } |
| 4613 | static DRIVER_ATTR_RW(strict); |
| 4614 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4615 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4616 | /* Note: The following array creates attribute files in the |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4617 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these |
| 4618 | files (over those found in the /sys/module/scsi_debug/parameters |
| 4619 | directory) is that auxiliary actions can be triggered when an attribute |
| 4620 | is changed. For example see: sdebug_add_host_store() above. |
| 4621 | */ |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 4622 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4623 | static struct attribute *sdebug_drv_attrs[] = { |
| 4624 | &driver_attr_delay.attr, |
| 4625 | &driver_attr_opts.attr, |
| 4626 | &driver_attr_ptype.attr, |
| 4627 | &driver_attr_dsense.attr, |
| 4628 | &driver_attr_fake_rw.attr, |
| 4629 | &driver_attr_no_lun_0.attr, |
| 4630 | &driver_attr_num_tgts.attr, |
| 4631 | &driver_attr_dev_size_mb.attr, |
| 4632 | &driver_attr_num_parts.attr, |
| 4633 | &driver_attr_every_nth.attr, |
| 4634 | &driver_attr_max_luns.attr, |
| 4635 | &driver_attr_max_queue.attr, |
| 4636 | &driver_attr_no_uld.attr, |
| 4637 | &driver_attr_scsi_level.attr, |
| 4638 | &driver_attr_virtual_gb.attr, |
| 4639 | &driver_attr_add_host.attr, |
| 4640 | &driver_attr_vpd_use_hostno.attr, |
| 4641 | &driver_attr_sector_size.attr, |
| 4642 | &driver_attr_dix.attr, |
| 4643 | &driver_attr_dif.attr, |
| 4644 | &driver_attr_guard.attr, |
| 4645 | &driver_attr_ato.attr, |
| 4646 | &driver_attr_map.attr, |
| 4647 | &driver_attr_removable.attr, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4648 | &driver_attr_host_lock.attr, |
| 4649 | &driver_attr_ndelay.attr, |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 4650 | &driver_attr_strict.attr, |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4651 | NULL, |
| 4652 | }; |
| 4653 | ATTRIBUTE_GROUPS(sdebug_drv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4654 | |
Akinobu Mita | 11ddcec | 2014-02-26 22:56:59 +0900 | [diff] [blame] | 4655 | static struct device *pseudo_primary; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 4656 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4657 | static int __init scsi_debug_init(void) |
| 4658 | { |
FUJITA Tomonori | 5f2578e | 2008-03-30 00:59:57 +0900 | [diff] [blame] | 4659 | unsigned long sz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4660 | int host_to_add; |
| 4661 | int k; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 4662 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4663 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4664 | atomic_set(&sdebug_cmnd_count, 0); |
| 4665 | atomic_set(&sdebug_completions, 0); |
| 4666 | atomic_set(&retired_max_queue, 0); |
| 4667 | |
| 4668 | if (scsi_debug_ndelay >= 1000000000) { |
| 4669 | pr_warn("%s: ndelay must be less than 1 second, ignored\n", |
| 4670 | __func__); |
| 4671 | scsi_debug_ndelay = 0; |
| 4672 | } else if (scsi_debug_ndelay > 0) |
| 4673 | scsi_debug_delay = DELAY_OVERRIDDEN; |
| 4674 | |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 4675 | switch (scsi_debug_sector_size) { |
| 4676 | case 512: |
| 4677 | case 1024: |
| 4678 | case 2048: |
| 4679 | case 4096: |
| 4680 | break; |
| 4681 | default: |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4682 | pr_err("%s: invalid sector_size %d\n", __func__, |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 4683 | scsi_debug_sector_size); |
| 4684 | return -EINVAL; |
| 4685 | } |
| 4686 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4687 | switch (scsi_debug_dif) { |
| 4688 | |
| 4689 | case SD_DIF_TYPE0_PROTECTION: |
| 4690 | case SD_DIF_TYPE1_PROTECTION: |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 4691 | case SD_DIF_TYPE2_PROTECTION: |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4692 | case SD_DIF_TYPE3_PROTECTION: |
| 4693 | break; |
| 4694 | |
| 4695 | default: |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4696 | pr_err("%s: dif must be 0, 1, 2 or 3\n", __func__); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4697 | return -EINVAL; |
| 4698 | } |
| 4699 | |
| 4700 | if (scsi_debug_guard > 1) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4701 | pr_err("%s: guard must be 0 or 1\n", __func__); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4702 | return -EINVAL; |
| 4703 | } |
| 4704 | |
| 4705 | if (scsi_debug_ato > 1) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4706 | pr_err("%s: ato must be 0 or 1\n", __func__); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4707 | return -EINVAL; |
| 4708 | } |
| 4709 | |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 4710 | if (scsi_debug_physblk_exp > 15) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4711 | pr_err("%s: invalid physblk_exp %u\n", __func__, |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 4712 | scsi_debug_physblk_exp); |
| 4713 | return -EINVAL; |
| 4714 | } |
| 4715 | |
| 4716 | if (scsi_debug_lowest_aligned > 0x3fff) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4717 | pr_err("%s: lowest_aligned too big: %u\n", __func__, |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 4718 | scsi_debug_lowest_aligned); |
| 4719 | return -EINVAL; |
| 4720 | } |
| 4721 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4722 | if (scsi_debug_dev_size_mb < 1) |
| 4723 | scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ |
FUJITA Tomonori | 5f2578e | 2008-03-30 00:59:57 +0900 | [diff] [blame] | 4724 | sz = (unsigned long)scsi_debug_dev_size_mb * 1048576; |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 4725 | sdebug_store_sectors = sz / scsi_debug_sector_size; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 4726 | sdebug_capacity = get_sdebug_capacity(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4727 | |
| 4728 | /* play around with geometry, don't waste too much on track 0 */ |
| 4729 | sdebug_heads = 8; |
| 4730 | sdebug_sectors_per = 32; |
| 4731 | if (scsi_debug_dev_size_mb >= 16) |
| 4732 | sdebug_heads = 32; |
| 4733 | else if (scsi_debug_dev_size_mb >= 256) |
| 4734 | sdebug_heads = 64; |
| 4735 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 4736 | (sdebug_sectors_per * sdebug_heads); |
| 4737 | if (sdebug_cylinders_per >= 1024) { |
| 4738 | /* other LLDs do this; implies >= 1GB ram disk ... */ |
| 4739 | sdebug_heads = 255; |
| 4740 | sdebug_sectors_per = 63; |
| 4741 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 4742 | (sdebug_sectors_per * sdebug_heads); |
| 4743 | } |
| 4744 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4745 | if (0 == scsi_debug_fake_rw) { |
| 4746 | fake_storep = vmalloc(sz); |
| 4747 | if (NULL == fake_storep) { |
| 4748 | pr_err("%s: out of memory, 1\n", __func__); |
| 4749 | return -ENOMEM; |
| 4750 | } |
| 4751 | memset(fake_storep, 0, sz); |
| 4752 | if (scsi_debug_num_parts > 0) |
| 4753 | sdebug_build_parts(fake_storep, sz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4754 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4755 | |
Akinobu Mita | 7cb69d0 | 2013-06-29 17:59:16 +0900 | [diff] [blame] | 4756 | if (scsi_debug_dix) { |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4757 | int dif_size; |
| 4758 | |
| 4759 | dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple); |
| 4760 | dif_storep = vmalloc(dif_size); |
| 4761 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4762 | pr_err("%s: dif_storep %u bytes @ %p\n", __func__, dif_size, |
| 4763 | dif_storep); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4764 | |
| 4765 | if (dif_storep == NULL) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4766 | pr_err("%s: out of mem. (DIX)\n", __func__); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4767 | ret = -ENOMEM; |
| 4768 | goto free_vm; |
| 4769 | } |
| 4770 | |
| 4771 | memset(dif_storep, 0xff, dif_size); |
| 4772 | } |
| 4773 | |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4774 | /* Logical Block Provisioning */ |
| 4775 | if (scsi_debug_lbp()) { |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 4776 | scsi_debug_unmap_max_blocks = |
| 4777 | clamp(scsi_debug_unmap_max_blocks, 0U, 0xffffffffU); |
| 4778 | |
| 4779 | scsi_debug_unmap_max_desc = |
| 4780 | clamp(scsi_debug_unmap_max_desc, 0U, 256U); |
| 4781 | |
| 4782 | scsi_debug_unmap_granularity = |
| 4783 | clamp(scsi_debug_unmap_granularity, 1U, 0xffffffffU); |
| 4784 | |
| 4785 | if (scsi_debug_unmap_alignment && |
Akinobu Mita | ac17078 | 2013-04-16 22:11:56 +0900 | [diff] [blame] | 4786 | scsi_debug_unmap_granularity <= |
| 4787 | scsi_debug_unmap_alignment) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4788 | pr_err("%s: ERR: unmap_granularity <= unmap_alignment\n", |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4789 | __func__); |
| 4790 | return -EINVAL; |
| 4791 | } |
| 4792 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 4793 | map_size = lba_to_map_index(sdebug_store_sectors - 1) + 1; |
| 4794 | map_storep = vmalloc(BITS_TO_LONGS(map_size) * sizeof(long)); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4795 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4796 | pr_info("%s: %lu provisioning blocks\n", __func__, map_size); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4797 | |
| 4798 | if (map_storep == NULL) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4799 | pr_err("%s: out of mem. (MAP)\n", __func__); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4800 | ret = -ENOMEM; |
| 4801 | goto free_vm; |
| 4802 | } |
| 4803 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 4804 | bitmap_zero(map_storep, map_size); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4805 | |
| 4806 | /* Map first 1KB for partition table */ |
| 4807 | if (scsi_debug_num_parts) |
| 4808 | map_region(0, 2); |
| 4809 | } |
| 4810 | |
Nicholas Bellinger | 9b90677 | 2010-09-06 17:24:28 -0700 | [diff] [blame] | 4811 | pseudo_primary = root_device_register("pseudo_0"); |
| 4812 | if (IS_ERR(pseudo_primary)) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4813 | pr_warn("%s: root_device_register() error\n", __func__); |
Nicholas Bellinger | 9b90677 | 2010-09-06 17:24:28 -0700 | [diff] [blame] | 4814 | ret = PTR_ERR(pseudo_primary); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 4815 | goto free_vm; |
| 4816 | } |
| 4817 | ret = bus_register(&pseudo_lld_bus); |
| 4818 | if (ret < 0) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4819 | pr_warn("%s: bus_register error: %d\n", __func__, ret); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 4820 | goto dev_unreg; |
| 4821 | } |
| 4822 | ret = driver_register(&sdebug_driverfs_driver); |
| 4823 | if (ret < 0) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4824 | pr_warn("%s: driver_register error: %d\n", __func__, ret); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 4825 | goto bus_unreg; |
| 4826 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4827 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4828 | host_to_add = scsi_debug_add_host; |
| 4829 | scsi_debug_add_host = 0; |
| 4830 | |
| 4831 | for (k = 0; k < host_to_add; k++) { |
| 4832 | if (sdebug_add_adapter()) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4833 | pr_err("%s: sdebug_add_adapter failed k=%d\n", |
| 4834 | __func__, k); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4835 | break; |
| 4836 | } |
| 4837 | } |
| 4838 | |
| 4839 | if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4840 | pr_info("%s: built %d host(s)\n", __func__, |
| 4841 | scsi_debug_add_host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4842 | } |
| 4843 | return 0; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 4844 | |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 4845 | bus_unreg: |
| 4846 | bus_unregister(&pseudo_lld_bus); |
| 4847 | dev_unreg: |
Nicholas Bellinger | 9b90677 | 2010-09-06 17:24:28 -0700 | [diff] [blame] | 4848 | root_device_unregister(pseudo_primary); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 4849 | free_vm: |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4850 | if (map_storep) |
| 4851 | vfree(map_storep); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4852 | if (dif_storep) |
| 4853 | vfree(dif_storep); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 4854 | vfree(fake_storep); |
| 4855 | |
| 4856 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4857 | } |
| 4858 | |
| 4859 | static void __exit scsi_debug_exit(void) |
| 4860 | { |
| 4861 | int k = scsi_debug_add_host; |
| 4862 | |
| 4863 | stop_all_queued(); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4864 | free_all_queued(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4865 | for (; k; k--) |
| 4866 | sdebug_remove_adapter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4867 | driver_unregister(&sdebug_driverfs_driver); |
| 4868 | bus_unregister(&pseudo_lld_bus); |
Nicholas Bellinger | 9b90677 | 2010-09-06 17:24:28 -0700 | [diff] [blame] | 4869 | root_device_unregister(pseudo_primary); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4870 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4871 | if (dif_storep) |
| 4872 | vfree(dif_storep); |
| 4873 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4874 | vfree(fake_storep); |
| 4875 | } |
| 4876 | |
| 4877 | device_initcall(scsi_debug_init); |
| 4878 | module_exit(scsi_debug_exit); |
| 4879 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4880 | static void sdebug_release_adapter(struct device * dev) |
| 4881 | { |
| 4882 | struct sdebug_host_info *sdbg_host; |
| 4883 | |
| 4884 | sdbg_host = to_sdebug_host(dev); |
| 4885 | kfree(sdbg_host); |
| 4886 | } |
| 4887 | |
| 4888 | static int sdebug_add_adapter(void) |
| 4889 | { |
| 4890 | int k, devs_per_host; |
| 4891 | int error = 0; |
| 4892 | struct sdebug_host_info *sdbg_host; |
FUJITA Tomonori | 8b40228f | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 4893 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4894 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4895 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4896 | if (NULL == sdbg_host) { |
| 4897 | printk(KERN_ERR "%s: out of memory at line %d\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 4898 | __func__, __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4899 | return -ENOMEM; |
| 4900 | } |
| 4901 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4902 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
| 4903 | |
| 4904 | devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; |
| 4905 | for (k = 0; k < devs_per_host; k++) { |
FUJITA Tomonori | 5cb2fc0 | 2008-03-20 11:09:16 +0900 | [diff] [blame] | 4906 | sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); |
| 4907 | if (!sdbg_devinfo) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4908 | printk(KERN_ERR "%s: out of memory at line %d\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 4909 | __func__, __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4910 | error = -ENOMEM; |
| 4911 | goto clean; |
| 4912 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4913 | } |
| 4914 | |
| 4915 | spin_lock(&sdebug_host_list_lock); |
| 4916 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); |
| 4917 | spin_unlock(&sdebug_host_list_lock); |
| 4918 | |
| 4919 | sdbg_host->dev.bus = &pseudo_lld_bus; |
Nicholas Bellinger | 9b90677 | 2010-09-06 17:24:28 -0700 | [diff] [blame] | 4920 | sdbg_host->dev.parent = pseudo_primary; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4921 | sdbg_host->dev.release = &sdebug_release_adapter; |
Kay Sievers | 71610f5 | 2008-12-03 22:41:36 +0100 | [diff] [blame] | 4922 | dev_set_name(&sdbg_host->dev, "adapter%d", scsi_debug_add_host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4923 | |
| 4924 | error = device_register(&sdbg_host->dev); |
| 4925 | |
| 4926 | if (error) |
| 4927 | goto clean; |
| 4928 | |
| 4929 | ++scsi_debug_add_host; |
| 4930 | return error; |
| 4931 | |
| 4932 | clean: |
FUJITA Tomonori | 8b40228f | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 4933 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
| 4934 | dev_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4935 | list_del(&sdbg_devinfo->dev_list); |
| 4936 | kfree(sdbg_devinfo); |
| 4937 | } |
| 4938 | |
| 4939 | kfree(sdbg_host); |
| 4940 | return error; |
| 4941 | } |
| 4942 | |
| 4943 | static void sdebug_remove_adapter(void) |
| 4944 | { |
| 4945 | struct sdebug_host_info * sdbg_host = NULL; |
| 4946 | |
| 4947 | spin_lock(&sdebug_host_list_lock); |
| 4948 | if (!list_empty(&sdebug_host_list)) { |
| 4949 | sdbg_host = list_entry(sdebug_host_list.prev, |
| 4950 | struct sdebug_host_info, host_list); |
| 4951 | list_del(&sdbg_host->host_list); |
| 4952 | } |
| 4953 | spin_unlock(&sdebug_host_list_lock); |
| 4954 | |
| 4955 | if (!sdbg_host) |
| 4956 | return; |
| 4957 | |
| 4958 | device_unregister(&sdbg_host->dev); |
| 4959 | --scsi_debug_add_host; |
| 4960 | } |
| 4961 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4962 | static int |
Christoph Hellwig | db5ed4d | 2014-11-13 15:08:42 +0100 | [diff] [blame] | 4963 | sdebug_change_qdepth(struct scsi_device *sdev, int qdepth) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4964 | { |
| 4965 | int num_in_q = 0; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4966 | unsigned long iflags; |
| 4967 | struct sdebug_dev_info *devip; |
| 4968 | |
| 4969 | spin_lock_irqsave(&queued_arr_lock, iflags); |
| 4970 | devip = (struct sdebug_dev_info *)sdev->hostdata; |
| 4971 | if (NULL == devip) { |
| 4972 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| 4973 | return -ENODEV; |
| 4974 | } |
| 4975 | num_in_q = atomic_read(&devip->num_in_q); |
| 4976 | spin_unlock_irqrestore(&queued_arr_lock, iflags); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4977 | |
Christoph Hellwig | c40ecc1 | 2014-11-13 14:25:11 +0100 | [diff] [blame] | 4978 | if (qdepth < 1) |
| 4979 | qdepth = 1; |
| 4980 | /* allow to exceed max host queued_arr elements for testing */ |
| 4981 | if (qdepth > SCSI_DEBUG_CANQUEUE + 10) |
| 4982 | qdepth = SCSI_DEBUG_CANQUEUE + 10; |
Christoph Hellwig | db5ed4d | 2014-11-13 15:08:42 +0100 | [diff] [blame] | 4983 | scsi_change_queue_depth(sdev, qdepth); |
Christoph Hellwig | c40ecc1 | 2014-11-13 14:25:11 +0100 | [diff] [blame] | 4984 | |
| 4985 | if (SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) { |
| 4986 | sdev_printk(KERN_INFO, sdev, |
| 4987 | "%s: qdepth=%d, num_in_q=%d\n", |
| 4988 | __func__, qdepth, num_in_q); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4989 | } |
| 4990 | return sdev->queue_depth; |
| 4991 | } |
| 4992 | |
| 4993 | static int |
Douglas Gilbert | 817fd66 | 2014-11-24 20:18:02 -0500 | [diff] [blame] | 4994 | check_inject(struct scsi_cmnd *scp) |
| 4995 | { |
| 4996 | struct sdebug_scmd_extra_t *ep = scsi_cmd_priv(scp); |
| 4997 | |
| 4998 | memset(ep, 0, sizeof(struct sdebug_scmd_extra_t)); |
| 4999 | |
| 5000 | if (atomic_inc_return(&sdebug_cmnd_count) >= |
| 5001 | abs(scsi_debug_every_nth)) { |
| 5002 | atomic_set(&sdebug_cmnd_count, 0); |
| 5003 | if (scsi_debug_every_nth < -1) |
| 5004 | scsi_debug_every_nth = -1; |
| 5005 | if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) |
| 5006 | return 1; /* ignore command causing timeout */ |
| 5007 | else if (SCSI_DEBUG_OPT_MAC_TIMEOUT & scsi_debug_opts && |
| 5008 | scsi_medium_access_command(scp)) |
| 5009 | return 1; /* time out reads and writes */ |
| 5010 | if (sdebug_any_injecting_opt) { |
| 5011 | int opts = scsi_debug_opts; |
| 5012 | |
| 5013 | if (SCSI_DEBUG_OPT_RECOVERED_ERR & opts) |
| 5014 | ep->inj_recovered = true; |
| 5015 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & opts) |
| 5016 | ep->inj_transport = true; |
| 5017 | else if (SCSI_DEBUG_OPT_DIF_ERR & opts) |
| 5018 | ep->inj_dif = true; |
| 5019 | else if (SCSI_DEBUG_OPT_DIX_ERR & opts) |
| 5020 | ep->inj_dix = true; |
| 5021 | else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & opts) |
| 5022 | ep->inj_short = true; |
| 5023 | } |
| 5024 | } |
| 5025 | return 0; |
| 5026 | } |
| 5027 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5028 | static int |
| 5029 | scsi_debug_queuecommand(struct scsi_cmnd *scp) |
| 5030 | { |
| 5031 | u8 sdeb_i; |
| 5032 | struct scsi_device *sdp = scp->device; |
| 5033 | const struct opcode_info_t *oip; |
| 5034 | const struct opcode_info_t *r_oip; |
| 5035 | struct sdebug_dev_info *devip; |
| 5036 | u8 *cmd = scp->cmnd; |
| 5037 | int (*r_pfp)(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 5038 | int k, na; |
| 5039 | int errsts = 0; |
| 5040 | int errsts_no_connect = DID_NO_CONNECT << 16; |
| 5041 | u32 flags; |
| 5042 | u16 sa; |
| 5043 | u8 opcode = cmd[0]; |
| 5044 | bool has_wlun_rl; |
| 5045 | bool debug = !!(SCSI_DEBUG_OPT_NOISE & scsi_debug_opts); |
| 5046 | |
| 5047 | scsi_set_resid(scp, 0); |
| 5048 | if (debug && !(SCSI_DEBUG_OPT_NO_CDB_NOISE & scsi_debug_opts)) { |
| 5049 | char b[120]; |
| 5050 | int n, len, sb; |
| 5051 | |
| 5052 | len = scp->cmd_len; |
| 5053 | sb = (int)sizeof(b); |
| 5054 | if (len > 32) |
| 5055 | strcpy(b, "too long, over 32 bytes"); |
| 5056 | else { |
| 5057 | for (k = 0, n = 0; k < len && n < sb; ++k) |
| 5058 | n += scnprintf(b + n, sb - n, "%02x ", |
| 5059 | (u32)cmd[k]); |
| 5060 | } |
| 5061 | sdev_printk(KERN_INFO, sdp, "%s: cmd %s\n", my_name, b); |
| 5062 | } |
| 5063 | has_wlun_rl = (sdp->lun == SAM2_WLUN_REPORT_LUNS); |
| 5064 | if ((sdp->lun >= scsi_debug_max_luns) && !has_wlun_rl) |
| 5065 | return schedule_resp(scp, NULL, errsts_no_connect, 0); |
| 5066 | |
| 5067 | sdeb_i = opcode_ind_arr[opcode]; /* fully mapped */ |
| 5068 | oip = &opcode_info_arr[sdeb_i]; /* safe if table consistent */ |
| 5069 | devip = (struct sdebug_dev_info *)sdp->hostdata; |
| 5070 | if (!devip) { |
| 5071 | devip = devInfoReg(sdp); |
| 5072 | if (NULL == devip) |
| 5073 | return schedule_resp(scp, NULL, errsts_no_connect, 0); |
| 5074 | } |
| 5075 | na = oip->num_attached; |
| 5076 | r_pfp = oip->pfp; |
| 5077 | if (na) { /* multiple commands with this opcode */ |
| 5078 | r_oip = oip; |
| 5079 | if (FF_SA & r_oip->flags) { |
| 5080 | if (F_SA_LOW & oip->flags) |
| 5081 | sa = 0x1f & cmd[1]; |
| 5082 | else |
| 5083 | sa = get_unaligned_be16(cmd + 8); |
| 5084 | for (k = 0; k <= na; oip = r_oip->arrp + k++) { |
| 5085 | if (opcode == oip->opcode && sa == oip->sa) |
| 5086 | break; |
| 5087 | } |
| 5088 | } else { /* since no service action only check opcode */ |
| 5089 | for (k = 0; k <= na; oip = r_oip->arrp + k++) { |
| 5090 | if (opcode == oip->opcode) |
| 5091 | break; |
| 5092 | } |
| 5093 | } |
| 5094 | if (k > na) { |
| 5095 | if (F_SA_LOW & r_oip->flags) |
| 5096 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 4); |
| 5097 | else if (F_SA_HIGH & r_oip->flags) |
| 5098 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 8, 7); |
| 5099 | else |
| 5100 | mk_sense_invalid_opcode(scp); |
| 5101 | goto check_cond; |
| 5102 | } |
| 5103 | } /* else (when na==0) we assume the oip is a match */ |
| 5104 | flags = oip->flags; |
| 5105 | if (F_INV_OP & flags) { |
| 5106 | mk_sense_invalid_opcode(scp); |
| 5107 | goto check_cond; |
| 5108 | } |
| 5109 | if (has_wlun_rl && !(F_RL_WLUN_OK & flags)) { |
| 5110 | if (debug) |
| 5111 | sdev_printk(KERN_INFO, sdp, "scsi_debug: Opcode: " |
| 5112 | "0x%x not supported for wlun\n", opcode); |
| 5113 | mk_sense_invalid_opcode(scp); |
| 5114 | goto check_cond; |
| 5115 | } |
| 5116 | if (scsi_debug_strict) { /* check cdb against mask */ |
| 5117 | u8 rem; |
| 5118 | int j; |
| 5119 | |
| 5120 | for (k = 1; k < oip->len_mask[0] && k < 16; ++k) { |
| 5121 | rem = ~oip->len_mask[k] & cmd[k]; |
| 5122 | if (rem) { |
| 5123 | for (j = 7; j >= 0; --j, rem <<= 1) { |
| 5124 | if (0x80 & rem) |
| 5125 | break; |
| 5126 | } |
| 5127 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, k, j); |
| 5128 | goto check_cond; |
| 5129 | } |
| 5130 | } |
| 5131 | } |
| 5132 | if (!(F_SKIP_UA & flags) && |
| 5133 | SDEBUG_NUM_UAS != find_first_bit(devip->uas_bm, SDEBUG_NUM_UAS)) { |
| 5134 | errsts = check_readiness(scp, UAS_ONLY, devip); |
| 5135 | if (errsts) |
| 5136 | goto check_cond; |
| 5137 | } |
| 5138 | if ((F_M_ACCESS & flags) && devip->stopped) { |
| 5139 | mk_sense_buffer(scp, NOT_READY, LOGICAL_UNIT_NOT_READY, 0x2); |
| 5140 | if (debug) |
| 5141 | sdev_printk(KERN_INFO, sdp, "%s reports: Not ready: " |
| 5142 | "%s\n", my_name, "initializing command " |
| 5143 | "required"); |
| 5144 | errsts = check_condition_result; |
| 5145 | goto fini; |
| 5146 | } |
| 5147 | if (scsi_debug_fake_rw && (F_FAKE_RW & flags)) |
| 5148 | goto fini; |
| 5149 | if (scsi_debug_every_nth) { |
| 5150 | if (check_inject(scp)) |
| 5151 | return 0; /* ignore command: make trouble */ |
| 5152 | } |
| 5153 | if (oip->pfp) /* if this command has a resp_* function, call it */ |
| 5154 | errsts = oip->pfp(scp, devip); |
| 5155 | else if (r_pfp) /* if leaf function ptr NULL, try the root's */ |
| 5156 | errsts = r_pfp(scp, devip); |
| 5157 | |
| 5158 | fini: |
| 5159 | return schedule_resp(scp, devip, errsts, |
| 5160 | ((F_DELAY_OVERR & flags) ? 0 : scsi_debug_delay)); |
| 5161 | check_cond: |
| 5162 | return schedule_resp(scp, devip, check_condition_result, 0); |
| 5163 | } |
| 5164 | |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 5165 | static int |
| 5166 | sdebug_queuecommand_lock_or_not(struct Scsi_Host *shost, struct scsi_cmnd *cmd) |
| 5167 | { |
| 5168 | if (scsi_debug_host_lock) { |
| 5169 | unsigned long iflags; |
| 5170 | int rc; |
| 5171 | |
| 5172 | spin_lock_irqsave(shost->host_lock, iflags); |
| 5173 | rc = scsi_debug_queuecommand(cmd); |
| 5174 | spin_unlock_irqrestore(shost->host_lock, iflags); |
| 5175 | return rc; |
| 5176 | } else |
| 5177 | return scsi_debug_queuecommand(cmd); |
| 5178 | } |
| 5179 | |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5180 | static struct scsi_host_template sdebug_driver_template = { |
Al Viro | c8ed555 | 2013-03-31 01:46:06 -0400 | [diff] [blame] | 5181 | .show_info = scsi_debug_show_info, |
| 5182 | .write_info = scsi_debug_write_info, |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5183 | .proc_name = sdebug_proc_name, |
| 5184 | .name = "SCSI DEBUG", |
| 5185 | .info = scsi_debug_info, |
| 5186 | .slave_alloc = scsi_debug_slave_alloc, |
| 5187 | .slave_configure = scsi_debug_slave_configure, |
| 5188 | .slave_destroy = scsi_debug_slave_destroy, |
| 5189 | .ioctl = scsi_debug_ioctl, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5190 | .queuecommand = sdebug_queuecommand_lock_or_not, |
| 5191 | .change_queue_depth = sdebug_change_qdepth, |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5192 | .eh_abort_handler = scsi_debug_abort, |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5193 | .eh_device_reset_handler = scsi_debug_device_reset, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5194 | .eh_target_reset_handler = scsi_debug_target_reset, |
| 5195 | .eh_bus_reset_handler = scsi_debug_bus_reset, |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5196 | .eh_host_reset_handler = scsi_debug_host_reset, |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5197 | .can_queue = SCSI_DEBUG_CANQUEUE, |
| 5198 | .this_id = 7, |
Akinobu Mita | 6bb5e6e | 2014-06-02 22:56:49 +0900 | [diff] [blame] | 5199 | .sg_tablesize = SCSI_MAX_SG_CHAIN_SEGMENTS, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5200 | .cmd_per_lun = DEF_CMD_PER_LUN, |
Akinobu Mita | 6bb5e6e | 2014-06-02 22:56:49 +0900 | [diff] [blame] | 5201 | .max_sectors = -1U, |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5202 | .use_clustering = DISABLE_CLUSTERING, |
| 5203 | .module = THIS_MODULE, |
Christoph Hellwig | c40ecc1 | 2014-11-13 14:25:11 +0100 | [diff] [blame] | 5204 | .track_queue_depth = 1, |
Douglas Gilbert | 817fd66 | 2014-11-24 20:18:02 -0500 | [diff] [blame] | 5205 | .cmd_size = sizeof(struct sdebug_scmd_extra_t), |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5206 | }; |
| 5207 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5208 | static int sdebug_driver_probe(struct device * dev) |
| 5209 | { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 5210 | int error = 0; |
Douglas Gilbert | 817fd66 | 2014-11-24 20:18:02 -0500 | [diff] [blame] | 5211 | int opts; |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 5212 | struct sdebug_host_info *sdbg_host; |
| 5213 | struct Scsi_Host *hpnt; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5214 | int host_prot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5215 | |
| 5216 | sdbg_host = to_sdebug_host(dev); |
| 5217 | |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 5218 | sdebug_driver_template.can_queue = scsi_debug_max_queue; |
Akinobu Mita | 0759c66 | 2014-02-26 22:57:04 +0900 | [diff] [blame] | 5219 | if (scsi_debug_clustering) |
| 5220 | sdebug_driver_template.use_clustering = ENABLE_CLUSTERING; |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 5221 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); |
| 5222 | if (NULL == hpnt) { |
Finn Thain | 17c9ff5 | 2014-10-03 11:43:31 +1000 | [diff] [blame] | 5223 | pr_err("%s: scsi_host_alloc failed\n", __func__); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 5224 | error = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5225 | return error; |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 5226 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5227 | |
| 5228 | sdbg_host->shost = hpnt; |
| 5229 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; |
| 5230 | if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) |
| 5231 | hpnt->max_id = scsi_debug_num_tgts + 1; |
| 5232 | else |
| 5233 | hpnt->max_id = scsi_debug_num_tgts; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 5234 | hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5235 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5236 | host_prot = 0; |
| 5237 | |
| 5238 | switch (scsi_debug_dif) { |
| 5239 | |
| 5240 | case SD_DIF_TYPE1_PROTECTION: |
| 5241 | host_prot = SHOST_DIF_TYPE1_PROTECTION; |
| 5242 | if (scsi_debug_dix) |
| 5243 | host_prot |= SHOST_DIX_TYPE1_PROTECTION; |
| 5244 | break; |
| 5245 | |
| 5246 | case SD_DIF_TYPE2_PROTECTION: |
| 5247 | host_prot = SHOST_DIF_TYPE2_PROTECTION; |
| 5248 | if (scsi_debug_dix) |
| 5249 | host_prot |= SHOST_DIX_TYPE2_PROTECTION; |
| 5250 | break; |
| 5251 | |
| 5252 | case SD_DIF_TYPE3_PROTECTION: |
| 5253 | host_prot = SHOST_DIF_TYPE3_PROTECTION; |
| 5254 | if (scsi_debug_dix) |
| 5255 | host_prot |= SHOST_DIX_TYPE3_PROTECTION; |
| 5256 | break; |
| 5257 | |
| 5258 | default: |
| 5259 | if (scsi_debug_dix) |
| 5260 | host_prot |= SHOST_DIX_TYPE0_PROTECTION; |
| 5261 | break; |
| 5262 | } |
| 5263 | |
| 5264 | scsi_host_set_prot(hpnt, host_prot); |
| 5265 | |
| 5266 | printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n", |
| 5267 | (host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", |
| 5268 | (host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", |
| 5269 | (host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", |
| 5270 | (host_prot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", |
| 5271 | (host_prot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", |
| 5272 | (host_prot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", |
| 5273 | (host_prot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); |
| 5274 | |
| 5275 | if (scsi_debug_guard == 1) |
| 5276 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP); |
| 5277 | else |
| 5278 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC); |
| 5279 | |
Douglas Gilbert | 817fd66 | 2014-11-24 20:18:02 -0500 | [diff] [blame] | 5280 | opts = scsi_debug_opts; |
| 5281 | if (SCSI_DEBUG_OPT_RECOVERED_ERR & opts) |
| 5282 | sdebug_any_injecting_opt = true; |
| 5283 | else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & opts) |
| 5284 | sdebug_any_injecting_opt = true; |
| 5285 | else if (SCSI_DEBUG_OPT_DIF_ERR & opts) |
| 5286 | sdebug_any_injecting_opt = true; |
| 5287 | else if (SCSI_DEBUG_OPT_DIX_ERR & opts) |
| 5288 | sdebug_any_injecting_opt = true; |
| 5289 | else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & opts) |
| 5290 | sdebug_any_injecting_opt = true; |
| 5291 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5292 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
| 5293 | if (error) { |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 5294 | printk(KERN_ERR "%s: scsi_add_host failed\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5295 | error = -ENODEV; |
| 5296 | scsi_host_put(hpnt); |
| 5297 | } else |
| 5298 | scsi_scan_host(hpnt); |
| 5299 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5300 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5301 | } |
| 5302 | |
| 5303 | static int sdebug_driver_remove(struct device * dev) |
| 5304 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5305 | struct sdebug_host_info *sdbg_host; |
FUJITA Tomonori | 8b40228f | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 5306 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5307 | |
| 5308 | sdbg_host = to_sdebug_host(dev); |
| 5309 | |
| 5310 | if (!sdbg_host) { |
| 5311 | printk(KERN_ERR "%s: Unable to locate host info\n", |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 5312 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5313 | return -ENODEV; |
| 5314 | } |
| 5315 | |
| 5316 | scsi_remove_host(sdbg_host->shost); |
| 5317 | |
FUJITA Tomonori | 8b40228f | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 5318 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
| 5319 | dev_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5320 | list_del(&sdbg_devinfo->dev_list); |
| 5321 | kfree(sdbg_devinfo); |
| 5322 | } |
| 5323 | |
| 5324 | scsi_host_put(sdbg_host->shost); |
| 5325 | return 0; |
| 5326 | } |
| 5327 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 5328 | static int pseudo_lld_bus_match(struct device *dev, |
| 5329 | struct device_driver *dev_driver) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5330 | { |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 5331 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5332 | } |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 5333 | |
| 5334 | static struct bus_type pseudo_lld_bus = { |
| 5335 | .name = "pseudo", |
| 5336 | .match = pseudo_lld_bus_match, |
| 5337 | .probe = sdebug_driver_probe, |
| 5338 | .remove = sdebug_driver_remove, |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 5339 | .drv_groups = sdebug_drv_groups, |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 5340 | }; |