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 | * |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 9 | * Copyright (C) 2001 - 2016 Douglas Gilbert |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2, or (at your option) |
| 14 | * any later version. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | * |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 16 | * For documentation see http://sg.danny.cz/sg/sdebug26.html |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | */ |
| 19 | |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 20 | |
| 21 | #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ |
| 22 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/module.h> |
| 24 | |
| 25 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/errno.h> |
Douglas Gilbert | b333a81 | 2016-04-25 12:16:30 -0400 | [diff] [blame] | 27 | #include <linux/jiffies.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 28 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/types.h> |
| 30 | #include <linux/string.h> |
| 31 | #include <linux/genhd.h> |
| 32 | #include <linux/fs.h> |
| 33 | #include <linux/init.h> |
| 34 | #include <linux/proc_fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/vmalloc.h> |
| 36 | #include <linux/moduleparam.h> |
Jens Axboe | 852e034 | 2007-07-16 10:19:24 +0200 | [diff] [blame] | 37 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include <linux/blkdev.h> |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 39 | #include <linux/crc-t10dif.h> |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 40 | #include <linux/spinlock.h> |
| 41 | #include <linux/interrupt.h> |
| 42 | #include <linux/atomic.h> |
| 43 | #include <linux/hrtimer.h> |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 44 | #include <linux/uuid.h> |
Christoph Hellwig | 6ebf105 | 2016-09-11 19:35:39 +0200 | [diff] [blame] | 45 | #include <linux/t10-pi.h> |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 46 | |
| 47 | #include <net/checksum.h> |
FUJITA Tomonori | 9ff26ee | 2008-03-02 18:30:15 +0900 | [diff] [blame] | 48 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 49 | #include <asm/unaligned.h> |
| 50 | |
FUJITA Tomonori | 9ff26ee | 2008-03-02 18:30:15 +0900 | [diff] [blame] | 51 | #include <scsi/scsi.h> |
| 52 | #include <scsi/scsi_cmnd.h> |
| 53 | #include <scsi/scsi_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #include <scsi/scsi_host.h> |
| 55 | #include <scsi/scsicam.h> |
FUJITA Tomonori | a34c4e9 | 2008-03-25 09:26:50 +0900 | [diff] [blame] | 56 | #include <scsi/scsi_eh.h> |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 57 | #include <scsi/scsi_tcq.h> |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 58 | #include <scsi/scsi_dbg.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 60 | #include "sd.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #include "scsi_logging.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 63 | /* make sure inq_product_rev string corresponds to this version */ |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 64 | #define SDEBUG_VERSION "1.86" |
| 65 | static const char *sdebug_version_date = "20160430"; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 66 | |
| 67 | #define MY_NAME "scsi_debug" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 69 | /* Additional Sense Code (ASC) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 70 | #define NO_ADDITIONAL_SENSE 0x0 |
| 71 | #define LOGICAL_UNIT_NOT_READY 0x4 |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 72 | #define LOGICAL_UNIT_COMMUNICATION_FAILURE 0x8 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | #define UNRECOVERED_READ_ERR 0x11 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 74 | #define PARAMETER_LIST_LENGTH_ERR 0x1a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | #define INVALID_OPCODE 0x20 |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 76 | #define LBA_OUT_OF_RANGE 0x21 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | #define INVALID_FIELD_IN_CDB 0x24 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 78 | #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 79 | #define UA_RESET_ASC 0x29 |
| 80 | #define UA_CHANGED_ASC 0x2a |
Ewan D. Milne | 19c8ead | 2014-12-04 11:49:27 -0500 | [diff] [blame] | 81 | #define TARGET_CHANGED_ASC 0x3f |
| 82 | #define LUNS_CHANGED_ASCQ 0x0e |
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 |
Ewan D. Milne | acafd0b | 2014-12-04 11:49:28 -0500 | [diff] [blame] | 94 | #define MICROCODE_CHANGED_ASCQ 0x1 /* with TARGET_CHANGED_ASC */ |
| 95 | #define MICROCODE_CHANGED_WO_RESET_ASCQ 0x16 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 97 | /* Additional Sense Code Qualifier (ASCQ) */ |
| 98 | #define ACK_NAK_TO 0x3 |
| 99 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | /* Default values for driver parameters */ |
| 101 | #define DEF_NUM_HOST 1 |
| 102 | #define DEF_NUM_TGTS 1 |
| 103 | #define DEF_MAX_LUNS 1 |
| 104 | /* With these defaults, this driver will make 1 host with 1 target |
| 105 | * (id 0) containing 1 logical unit (lun 0). That is 1 device. |
| 106 | */ |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 107 | #define DEF_ATO 1 |
Douglas Gilbert | c220609 | 2016-04-25 12:16:31 -0400 | [diff] [blame] | 108 | #define DEF_JDELAY 1 /* if > 0 unit is a jiffy */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | #define DEF_DEV_SIZE_MB 8 |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 110 | #define DEF_DIF 0 |
| 111 | #define DEF_DIX 0 |
| 112 | #define DEF_D_SENSE 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | #define DEF_EVERY_NTH 0 |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 114 | #define DEF_FAKE_RW 0 |
| 115 | #define DEF_GUARD 0 |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 116 | #define DEF_HOST_LOCK 0 |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 117 | #define DEF_LBPU 0 |
| 118 | #define DEF_LBPWS 0 |
| 119 | #define DEF_LBPWS10 0 |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 120 | #define DEF_LBPRZ 1 |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 121 | #define DEF_LOWEST_ALIGNED 0 |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 122 | #define DEF_NDELAY 0 /* if > 0 unit is a nanosecond */ |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 123 | #define DEF_NO_LUN_0 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | #define DEF_NUM_PARTS 0 |
| 125 | #define DEF_OPTS 0 |
Martin K. Petersen | 32c5844 | 2015-12-16 17:53:51 -0500 | [diff] [blame] | 126 | #define DEF_OPT_BLKS 1024 |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 127 | #define DEF_PHYSBLK_EXP 0 |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 128 | #define DEF_PTYPE TYPE_DISK |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 129 | #define DEF_REMOVABLE false |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 130 | #define DEF_SCSI_LEVEL 7 /* INQUIRY, byte2 [6->SPC-4; 7->SPC-5] */ |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 131 | #define DEF_SECTOR_SIZE 512 |
| 132 | #define DEF_UNMAP_ALIGNMENT 0 |
| 133 | #define DEF_UNMAP_GRANULARITY 1 |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 134 | #define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF |
| 135 | #define DEF_UNMAP_MAX_DESC 256 |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 136 | #define DEF_VIRTUAL_GB 0 |
| 137 | #define DEF_VPD_USE_HOSTNO 1 |
| 138 | #define DEF_WRITESAME_LENGTH 0xFFFF |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 139 | #define DEF_STRICT 0 |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 140 | #define DEF_STATISTICS false |
| 141 | #define DEF_SUBMIT_QUEUES 1 |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 142 | #define DEF_UUID_CTL 0 |
Douglas Gilbert | c220609 | 2016-04-25 12:16:31 -0400 | [diff] [blame] | 143 | #define JDELAY_OVERRIDDEN -9999 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 145 | #define SDEBUG_LUN_0_VAL 0 |
| 146 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 147 | /* bit mask values for sdebug_opts */ |
| 148 | #define SDEBUG_OPT_NOISE 1 |
| 149 | #define SDEBUG_OPT_MEDIUM_ERR 2 |
| 150 | #define SDEBUG_OPT_TIMEOUT 4 |
| 151 | #define SDEBUG_OPT_RECOVERED_ERR 8 |
| 152 | #define SDEBUG_OPT_TRANSPORT_ERR 16 |
| 153 | #define SDEBUG_OPT_DIF_ERR 32 |
| 154 | #define SDEBUG_OPT_DIX_ERR 64 |
| 155 | #define SDEBUG_OPT_MAC_TIMEOUT 128 |
| 156 | #define SDEBUG_OPT_SHORT_TRANSFER 0x100 |
| 157 | #define SDEBUG_OPT_Q_NOISE 0x200 |
| 158 | #define SDEBUG_OPT_ALL_TSF 0x400 |
| 159 | #define SDEBUG_OPT_RARE_TSF 0x800 |
| 160 | #define SDEBUG_OPT_N_WCE 0x1000 |
| 161 | #define SDEBUG_OPT_RESET_NOISE 0x2000 |
| 162 | #define SDEBUG_OPT_NO_CDB_NOISE 0x4000 |
| 163 | #define SDEBUG_OPT_ALL_NOISE (SDEBUG_OPT_NOISE | SDEBUG_OPT_Q_NOISE | \ |
| 164 | SDEBUG_OPT_RESET_NOISE) |
| 165 | #define SDEBUG_OPT_ALL_INJECTING (SDEBUG_OPT_RECOVERED_ERR | \ |
| 166 | SDEBUG_OPT_TRANSPORT_ERR | \ |
| 167 | SDEBUG_OPT_DIF_ERR | SDEBUG_OPT_DIX_ERR | \ |
| 168 | SDEBUG_OPT_SHORT_TRANSFER) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | /* When "every_nth" > 0 then modulo "every_nth" commands: |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 170 | * - a missing response is simulated if SDEBUG_OPT_TIMEOUT is set |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | * - a RECOVERED_ERROR is simulated on successful read and write |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 172 | * commands if SDEBUG_OPT_RECOVERED_ERR is set. |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 173 | * - a TRANSPORT_ERROR is simulated on successful read and write |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 174 | * commands if SDEBUG_OPT_TRANSPORT_ERR is set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | * |
| 176 | * When "every_nth" < 0 then after "- every_nth" commands: |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 177 | * - a missing response is simulated if SDEBUG_OPT_TIMEOUT is set |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | * - a RECOVERED_ERROR is simulated on successful read and write |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 179 | * commands if SDEBUG_OPT_RECOVERED_ERR is set. |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 180 | * - a TRANSPORT_ERROR is simulated on successful read and write |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 181 | * commands if _DEBUG_OPT_TRANSPORT_ERR is set. |
| 182 | * This will continue on every subsequent command until some other action |
| 183 | * occurs (e.g. the user * writing a new value (other than -1 or 1) to |
| 184 | * every_nth via sysfs). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | */ |
| 186 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 187 | /* As indicated in SAM-5 and SPC-4 Unit Attentions (UAs) are returned in |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 188 | * priority order. In the subset implemented here lower numbers have higher |
| 189 | * priority. The UA numbers should be a sequence starting from 0 with |
| 190 | * SDEBUG_NUM_UAS being 1 higher than the highest numbered UA. */ |
| 191 | #define SDEBUG_UA_POR 0 /* Power on, reset, or bus device reset */ |
| 192 | #define SDEBUG_UA_BUS_RESET 1 |
| 193 | #define SDEBUG_UA_MODE_CHANGED 2 |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 194 | #define SDEBUG_UA_CAPACITY_CHANGED 3 |
Ewan D. Milne | 19c8ead | 2014-12-04 11:49:27 -0500 | [diff] [blame] | 195 | #define SDEBUG_UA_LUNS_CHANGED 4 |
Ewan D. Milne | acafd0b | 2014-12-04 11:49:28 -0500 | [diff] [blame] | 196 | #define SDEBUG_UA_MICROCODE_CHANGED 5 /* simulate firmware change */ |
| 197 | #define SDEBUG_UA_MICROCODE_CHANGED_WO_RESET 6 |
| 198 | #define SDEBUG_NUM_UAS 7 |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 199 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 200 | /* when 1==SDEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | * sector on read commands: */ |
| 202 | #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ |
Douglas Gilbert | 32f7ef7 | 2011-03-11 10:43:35 -0500 | [diff] [blame] | 203 | #define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | |
| 205 | /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) |
| 206 | * or "peripheral device" addressing (value 0) */ |
| 207 | #define SAM2_LUN_ADDRESS_METHOD 0 |
| 208 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 209 | /* SDEBUG_CANQUEUE is the maximum number of commands that can be queued |
| 210 | * (for response) per submit queue at one time. Can be reduced by max_queue |
| 211 | * option. Command responses are not queued when jdelay=0 and ndelay=0. The |
| 212 | * per-device DEF_CMD_PER_LUN can be changed via sysfs: |
| 213 | * /sys/class/scsi_device/<h:c:t:l>/device/queue_depth |
| 214 | * but cannot exceed SDEBUG_CANQUEUE . |
| 215 | */ |
| 216 | #define SDEBUG_CANQUEUE_WORDS 3 /* a WORD is bits in a long */ |
| 217 | #define SDEBUG_CANQUEUE (SDEBUG_CANQUEUE_WORDS * BITS_PER_LONG) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 218 | #define DEF_CMD_PER_LUN 255 |
| 219 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 220 | #define F_D_IN 1 |
| 221 | #define F_D_OUT 2 |
| 222 | #define F_D_OUT_MAYBE 4 /* WRITE SAME, NDOB bit */ |
| 223 | #define F_D_UNKN 8 |
| 224 | #define F_RL_WLUN_OK 0x10 |
| 225 | #define F_SKIP_UA 0x20 |
| 226 | #define F_DELAY_OVERR 0x40 |
| 227 | #define F_SA_LOW 0x80 /* cdb byte 1, bits 4 to 0 */ |
| 228 | #define F_SA_HIGH 0x100 /* as used by variable length cdbs */ |
| 229 | #define F_INV_OP 0x200 |
| 230 | #define F_FAKE_RW 0x400 |
| 231 | #define F_M_ACCESS 0x800 /* media access */ |
| 232 | |
| 233 | #define FF_RESPOND (F_RL_WLUN_OK | F_SKIP_UA | F_DELAY_OVERR) |
| 234 | #define FF_DIRECT_IO (F_M_ACCESS | F_FAKE_RW) |
| 235 | #define FF_SA (F_SA_HIGH | F_SA_LOW) |
| 236 | |
| 237 | #define SDEBUG_MAX_PARTS 4 |
| 238 | |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 239 | #define SDEBUG_MAX_CMD_LEN 32 |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 240 | |
| 241 | |
| 242 | struct sdebug_dev_info { |
| 243 | struct list_head dev_list; |
| 244 | unsigned int channel; |
| 245 | unsigned int target; |
| 246 | u64 lun; |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 247 | uuid_be lu_name; |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 248 | struct sdebug_host_info *sdbg_host; |
| 249 | unsigned long uas_bm[1]; |
| 250 | atomic_t num_in_q; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 251 | atomic_t stopped; |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 252 | bool used; |
| 253 | }; |
| 254 | |
| 255 | struct sdebug_host_info { |
| 256 | struct list_head host_list; |
| 257 | struct Scsi_Host *shost; |
| 258 | struct device dev; |
| 259 | struct list_head dev_info_list; |
| 260 | }; |
| 261 | |
| 262 | #define to_sdebug_host(d) \ |
| 263 | container_of(d, struct sdebug_host_info, dev) |
| 264 | |
| 265 | struct sdebug_defer { |
| 266 | struct hrtimer hrt; |
| 267 | struct execute_work ew; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 268 | int sqa_idx; /* index of sdebug_queue array */ |
| 269 | int qc_idx; /* index of sdebug_queued_cmd array within sqa_idx */ |
| 270 | int issuing_cpu; |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 271 | }; |
| 272 | |
| 273 | struct sdebug_queued_cmd { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 274 | /* corresponding bit set in in_use_bm[] in owning struct sdebug_queue |
| 275 | * instance indicates this slot is in use. |
| 276 | */ |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 277 | struct sdebug_defer *sd_dp; |
| 278 | struct scsi_cmnd *a_cmnd; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 279 | unsigned int inj_recovered:1; |
| 280 | unsigned int inj_transport:1; |
| 281 | unsigned int inj_dif:1; |
| 282 | unsigned int inj_dix:1; |
| 283 | unsigned int inj_short:1; |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 284 | }; |
| 285 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 286 | struct sdebug_queue { |
| 287 | struct sdebug_queued_cmd qc_arr[SDEBUG_CANQUEUE]; |
| 288 | unsigned long in_use_bm[SDEBUG_CANQUEUE_WORDS]; |
| 289 | spinlock_t qc_lock; |
| 290 | atomic_t blocked; /* to temporarily stop more being queued */ |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 291 | }; |
| 292 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 293 | static atomic_t sdebug_cmnd_count; /* number of incoming commands */ |
| 294 | static atomic_t sdebug_completions; /* count of deferred completions */ |
| 295 | static atomic_t sdebug_miss_cpus; /* submission + completion cpus differ */ |
| 296 | static atomic_t sdebug_a_tsf; /* 'almost task set full' counter */ |
| 297 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 298 | struct opcode_info_t { |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 299 | u8 num_attached; /* 0 if this is it (i.e. a leaf); use 0xff */ |
| 300 | /* for terminating element */ |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 301 | u8 opcode; /* if num_attached > 0, preferred */ |
| 302 | u16 sa; /* service action */ |
| 303 | u32 flags; /* OR-ed set of SDEB_F_* */ |
| 304 | int (*pfp)(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 305 | const struct opcode_info_t *arrp; /* num_attached elements or NULL */ |
| 306 | u8 len_mask[16]; /* len=len_mask[0], then mask for cdb[1]... */ |
| 307 | /* ignore cdb bytes after position 15 */ |
| 308 | }; |
| 309 | |
| 310 | /* SCSI opcodes (first byte of cdb) of interest mapped onto these indexes */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 311 | enum sdeb_opcode_index { |
| 312 | SDEB_I_INVALID_OPCODE = 0, |
| 313 | SDEB_I_INQUIRY = 1, |
| 314 | SDEB_I_REPORT_LUNS = 2, |
| 315 | SDEB_I_REQUEST_SENSE = 3, |
| 316 | SDEB_I_TEST_UNIT_READY = 4, |
| 317 | SDEB_I_MODE_SENSE = 5, /* 6, 10 */ |
| 318 | SDEB_I_MODE_SELECT = 6, /* 6, 10 */ |
| 319 | SDEB_I_LOG_SENSE = 7, |
| 320 | SDEB_I_READ_CAPACITY = 8, /* 10; 16 is in SA_IN(16) */ |
| 321 | SDEB_I_READ = 9, /* 6, 10, 12, 16 */ |
| 322 | SDEB_I_WRITE = 10, /* 6, 10, 12, 16 */ |
| 323 | SDEB_I_START_STOP = 11, |
| 324 | SDEB_I_SERV_ACT_IN = 12, /* 12, 16 */ |
| 325 | SDEB_I_SERV_ACT_OUT = 13, /* 12, 16 */ |
| 326 | SDEB_I_MAINT_IN = 14, |
| 327 | SDEB_I_MAINT_OUT = 15, |
| 328 | SDEB_I_VERIFY = 16, /* 10 only */ |
| 329 | SDEB_I_VARIABLE_LEN = 17, |
| 330 | SDEB_I_RESERVE = 18, /* 6, 10 */ |
| 331 | SDEB_I_RELEASE = 19, /* 6, 10 */ |
| 332 | SDEB_I_ALLOW_REMOVAL = 20, /* PREVENT ALLOW MEDIUM REMOVAL */ |
| 333 | SDEB_I_REZERO_UNIT = 21, /* REWIND in SSC */ |
| 334 | SDEB_I_ATA_PT = 22, /* 12, 16 */ |
| 335 | SDEB_I_SEND_DIAG = 23, |
| 336 | SDEB_I_UNMAP = 24, |
| 337 | SDEB_I_XDWRITEREAD = 25, /* 10 only */ |
| 338 | SDEB_I_WRITE_BUFFER = 26, |
| 339 | SDEB_I_WRITE_SAME = 27, /* 10, 16 */ |
| 340 | SDEB_I_SYNC_CACHE = 28, /* 10 only */ |
| 341 | SDEB_I_COMP_WRITE = 29, |
| 342 | SDEB_I_LAST_ELEMENT = 30, /* keep this last */ |
| 343 | }; |
| 344 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 345 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 346 | static const unsigned char opcode_ind_arr[256] = { |
| 347 | /* 0x0; 0x0->0x1f: 6 byte cdbs */ |
| 348 | SDEB_I_TEST_UNIT_READY, SDEB_I_REZERO_UNIT, 0, SDEB_I_REQUEST_SENSE, |
| 349 | 0, 0, 0, 0, |
| 350 | SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, 0, |
| 351 | 0, 0, SDEB_I_INQUIRY, 0, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, |
| 352 | SDEB_I_RELEASE, |
| 353 | 0, 0, SDEB_I_MODE_SENSE, SDEB_I_START_STOP, 0, SDEB_I_SEND_DIAG, |
| 354 | SDEB_I_ALLOW_REMOVAL, 0, |
| 355 | /* 0x20; 0x20->0x3f: 10 byte cdbs */ |
| 356 | 0, 0, 0, 0, 0, SDEB_I_READ_CAPACITY, 0, 0, |
| 357 | SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, SDEB_I_VERIFY, |
| 358 | 0, 0, 0, 0, 0, SDEB_I_SYNC_CACHE, 0, 0, |
| 359 | 0, 0, 0, SDEB_I_WRITE_BUFFER, 0, 0, 0, 0, |
| 360 | /* 0x40; 0x40->0x5f: 10 byte cdbs */ |
| 361 | 0, SDEB_I_WRITE_SAME, SDEB_I_UNMAP, 0, 0, 0, 0, 0, |
| 362 | 0, 0, 0, 0, 0, SDEB_I_LOG_SENSE, 0, 0, |
| 363 | 0, 0, 0, SDEB_I_XDWRITEREAD, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, |
| 364 | SDEB_I_RELEASE, |
| 365 | 0, 0, SDEB_I_MODE_SENSE, 0, 0, 0, 0, 0, |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 366 | /* 0x60; 0x60->0x7d are reserved, 0x7e is "extended cdb" */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 367 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 368 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 369 | 0, SDEB_I_VARIABLE_LEN, |
| 370 | /* 0x80; 0x80->0x9f: 16 byte cdbs */ |
| 371 | 0, 0, 0, 0, 0, SDEB_I_ATA_PT, 0, 0, |
| 372 | SDEB_I_READ, SDEB_I_COMP_WRITE, SDEB_I_WRITE, 0, 0, 0, 0, 0, |
| 373 | 0, 0, 0, SDEB_I_WRITE_SAME, 0, 0, 0, 0, |
| 374 | 0, 0, 0, 0, 0, 0, SDEB_I_SERV_ACT_IN, SDEB_I_SERV_ACT_OUT, |
| 375 | /* 0xa0; 0xa0->0xbf: 12 byte cdbs */ |
| 376 | SDEB_I_REPORT_LUNS, SDEB_I_ATA_PT, 0, SDEB_I_MAINT_IN, |
| 377 | SDEB_I_MAINT_OUT, 0, 0, 0, |
| 378 | SDEB_I_READ, SDEB_I_SERV_ACT_OUT, SDEB_I_WRITE, SDEB_I_SERV_ACT_IN, |
| 379 | 0, 0, 0, 0, |
| 380 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 381 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 382 | /* 0xc0; 0xc0->0xff: vendor specific */ |
| 383 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 384 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 385 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 386 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 387 | }; |
| 388 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 389 | static int resp_inquiry(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 390 | static int resp_report_luns(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 391 | static int resp_requests(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 392 | static int resp_mode_sense(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 393 | static int resp_mode_select(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 394 | static int resp_log_sense(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 395 | static int resp_readcap(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 396 | static int resp_read_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 397 | static int resp_write_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 398 | static int resp_start_stop(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 399 | static int resp_readcap16(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 400 | static int resp_get_lba_status(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 401 | static int resp_report_tgtpgs(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 402 | static int resp_unmap(struct scsi_cmnd *, struct sdebug_dev_info *); |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 403 | static int resp_rsup_opcodes(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 404 | static int resp_rsup_tmfs(struct scsi_cmnd *, struct sdebug_dev_info *); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 405 | static int resp_write_same_10(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 406 | static int resp_write_same_16(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 407 | static int resp_xdwriteread_10(struct scsi_cmnd *, struct sdebug_dev_info *); |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 408 | static int resp_comp_write(struct scsi_cmnd *, struct sdebug_dev_info *); |
Ewan D. Milne | acafd0b | 2014-12-04 11:49:28 -0500 | [diff] [blame] | 409 | static int resp_write_buffer(struct scsi_cmnd *, struct sdebug_dev_info *); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 410 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 411 | static const struct opcode_info_t msense_iarr[1] = { |
| 412 | {0, 0x1a, 0, F_D_IN, NULL, NULL, |
| 413 | {6, 0xe8, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 414 | }; |
| 415 | |
| 416 | static const struct opcode_info_t mselect_iarr[1] = { |
| 417 | {0, 0x15, 0, F_D_OUT, NULL, NULL, |
| 418 | {6, 0xf1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 419 | }; |
| 420 | |
| 421 | static const struct opcode_info_t read_iarr[3] = { |
| 422 | {0, 0x28, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL,/* READ(10) */ |
| 423 | {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, |
| 424 | 0, 0, 0, 0} }, |
| 425 | {0, 0x8, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL, /* READ(6) */ |
| 426 | {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 427 | {0, 0xa8, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL,/* READ(12) */ |
| 428 | {12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, |
| 429 | 0xc7, 0, 0, 0, 0} }, |
| 430 | }; |
| 431 | |
| 432 | static const struct opcode_info_t write_iarr[3] = { |
| 433 | {0, 0x2a, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 10 */ |
| 434 | {10, 0xfb, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, |
| 435 | 0, 0, 0, 0} }, |
| 436 | {0, 0xa, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 6 */ |
| 437 | {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 438 | {0, 0xaa, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 12 */ |
| 439 | {12, 0xfb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, |
| 440 | 0xc7, 0, 0, 0, 0} }, |
| 441 | }; |
| 442 | |
| 443 | static const struct opcode_info_t sa_in_iarr[1] = { |
| 444 | {0, 0x9e, 0x12, F_SA_LOW | F_D_IN, resp_get_lba_status, NULL, |
| 445 | {16, 0x12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 446 | 0xff, 0xff, 0xff, 0, 0xc7} }, |
| 447 | }; |
| 448 | |
| 449 | static const struct opcode_info_t vl_iarr[1] = { /* VARIABLE LENGTH */ |
| 450 | {0, 0x7f, 0xb, F_SA_HIGH | F_D_OUT | FF_DIRECT_IO, resp_write_dt0, |
| 451 | NULL, {32, 0xc7, 0, 0, 0, 0, 0x1f, 0x18, 0x0, 0xb, 0xfa, |
| 452 | 0, 0xff, 0xff, 0xff, 0xff} }, /* WRITE(32) */ |
| 453 | }; |
| 454 | |
| 455 | static const struct opcode_info_t maint_in_iarr[2] = { |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 456 | {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] | 457 | {12, 0xc, 0x87, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, |
| 458 | 0xc7, 0, 0, 0, 0} }, |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 459 | {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] | 460 | {12, 0xd, 0x80, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, |
| 461 | 0, 0} }, |
| 462 | }; |
| 463 | |
| 464 | static const struct opcode_info_t write_same_iarr[1] = { |
| 465 | {0, 0x93, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, resp_write_same_16, NULL, |
| 466 | {16, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 467 | 0xff, 0xff, 0xff, 0x1f, 0xc7} }, |
| 468 | }; |
| 469 | |
| 470 | static const struct opcode_info_t reserve_iarr[1] = { |
| 471 | {0, 0x16, 0, F_D_OUT, NULL, NULL, /* RESERVE(6) */ |
| 472 | {6, 0x1f, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 473 | }; |
| 474 | |
| 475 | static const struct opcode_info_t release_iarr[1] = { |
| 476 | {0, 0x17, 0, F_D_OUT, NULL, NULL, /* RELEASE(6) */ |
| 477 | {6, 0x1f, 0xff, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 478 | }; |
| 479 | |
| 480 | |
| 481 | /* This array is accessed via SDEB_I_* values. Make sure all are mapped, |
| 482 | * plus the terminating elements for logic that scans this table such as |
| 483 | * REPORT SUPPORTED OPERATION CODES. */ |
| 484 | static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEMENT + 1] = { |
| 485 | /* 0 */ |
| 486 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, |
| 487 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 488 | {0, 0x12, 0, FF_RESPOND | F_D_IN, resp_inquiry, NULL, |
| 489 | {6, 0xe3, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 490 | {0, 0xa0, 0, FF_RESPOND | F_D_IN, resp_report_luns, NULL, |
| 491 | {12, 0xe3, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, |
| 492 | 0, 0} }, |
| 493 | {0, 0x3, 0, FF_RESPOND | F_D_IN, resp_requests, NULL, |
| 494 | {6, 0xe1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 495 | {0, 0x0, 0, F_M_ACCESS | F_RL_WLUN_OK, NULL, NULL,/* TEST UNIT READY */ |
| 496 | {6, 0, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 497 | {1, 0x5a, 0, F_D_IN, resp_mode_sense, msense_iarr, |
| 498 | {10, 0xf8, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, |
| 499 | 0} }, |
| 500 | {1, 0x55, 0, F_D_OUT, resp_mode_select, mselect_iarr, |
| 501 | {10, 0xf1, 0, 0, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, |
| 502 | {0, 0x4d, 0, F_D_IN, resp_log_sense, NULL, |
| 503 | {10, 0xe3, 0xff, 0xff, 0, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, |
| 504 | 0, 0, 0} }, |
| 505 | {0, 0x25, 0, F_D_IN, resp_readcap, NULL, |
| 506 | {10, 0xe1, 0xff, 0xff, 0xff, 0xff, 0, 0, 0x1, 0xc7, 0, 0, 0, 0, |
| 507 | 0, 0} }, |
| 508 | {3, 0x88, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, read_iarr, |
| 509 | {16, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 510 | 0xff, 0xff, 0xff, 0x9f, 0xc7} }, /* READ(16) */ |
| 511 | /* 10 */ |
| 512 | {3, 0x8a, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, write_iarr, |
| 513 | {16, 0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 514 | 0xff, 0xff, 0xff, 0x9f, 0xc7} }, /* WRITE(16) */ |
| 515 | {0, 0x1b, 0, 0, resp_start_stop, NULL, /* START STOP UNIT */ |
| 516 | {6, 0x1, 0, 0xf, 0xf7, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 517 | {1, 0x9e, 0x10, F_SA_LOW | F_D_IN, resp_readcap16, sa_in_iarr, |
| 518 | {16, 0x10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 519 | 0xff, 0xff, 0xff, 0x1, 0xc7} }, /* READ CAPACITY(16) */ |
| 520 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* SA OUT */ |
| 521 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 522 | {2, 0xa3, 0xa, F_SA_LOW | F_D_IN, resp_report_tgtpgs, maint_in_iarr, |
| 523 | {12, 0xea, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, 0, |
| 524 | 0} }, |
| 525 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* MAINT OUT */ |
| 526 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
Douglas Gilbert | f7f9f26 | 2015-11-22 12:11:28 -0500 | [diff] [blame] | 527 | {0, 0x2f, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, NULL, NULL, /* VERIFY(10) */ |
| 528 | {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, |
| 529 | 0, 0, 0, 0, 0, 0} }, |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 530 | {1, 0x7f, 0x9, F_SA_HIGH | F_D_IN | FF_DIRECT_IO, resp_read_dt0, |
| 531 | vl_iarr, {32, 0xc7, 0, 0, 0, 0, 0x1f, 0x18, 0x0, 0x9, 0xfe, 0, |
| 532 | 0xff, 0xff, 0xff, 0xff} },/* VARIABLE LENGTH, READ(32) */ |
| 533 | {1, 0x56, 0, F_D_OUT, NULL, reserve_iarr, /* RESERVE(10) */ |
| 534 | {10, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, |
| 535 | 0} }, |
| 536 | {1, 0x57, 0, F_D_OUT, NULL, release_iarr, /* RELEASE(10) */ |
| 537 | {10, 0x13, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, |
| 538 | 0} }, |
| 539 | /* 20 */ |
Douglas Gilbert | f7f9f26 | 2015-11-22 12:11:28 -0500 | [diff] [blame] | 540 | {0, 0x1e, 0, 0, NULL, NULL, /* ALLOW REMOVAL */ |
| 541 | {6, 0, 0, 0, 0x3, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 542 | {0, 0x1, 0, 0, resp_start_stop, NULL, /* REWIND ?? */ |
| 543 | {6, 0x1, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 544 | {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* ATA_PT */ |
| 545 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 546 | {0, 0x1d, F_D_OUT, 0, NULL, NULL, /* SEND DIAGNOSTIC */ |
| 547 | {6, 0xf7, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 548 | {0, 0x42, 0, F_D_OUT | FF_DIRECT_IO, resp_unmap, NULL, /* UNMAP */ |
| 549 | {10, 0x1, 0, 0, 0, 0, 0x1f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, |
| 550 | {0, 0x53, 0, F_D_IN | F_D_OUT | FF_DIRECT_IO, resp_xdwriteread_10, |
| 551 | NULL, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, |
| 552 | 0, 0, 0, 0, 0, 0} }, |
Ewan D. Milne | acafd0b | 2014-12-04 11:49:28 -0500 | [diff] [blame] | 553 | {0, 0x3b, 0, F_D_OUT_MAYBE, resp_write_buffer, NULL, |
| 554 | {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, |
| 555 | 0, 0, 0, 0} }, /* WRITE_BUFFER */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 556 | {1, 0x41, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, resp_write_same_10, |
| 557 | write_same_iarr, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, |
| 558 | 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, |
| 559 | {0, 0x35, 0, F_DELAY_OVERR | FF_DIRECT_IO, NULL, NULL, /* SYNC_CACHE */ |
| 560 | {10, 0x7, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, |
| 561 | 0, 0, 0, 0} }, |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 562 | {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] | 563 | {16, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, |
| 564 | 0, 0xff, 0x1f, 0xc7} }, /* COMPARE AND WRITE */ |
| 565 | |
| 566 | /* 30 */ |
| 567 | {0xff, 0, 0, 0, NULL, NULL, /* terminating element */ |
| 568 | {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, |
| 569 | }; |
| 570 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 571 | static int sdebug_add_host = DEF_NUM_HOST; |
| 572 | static int sdebug_ato = DEF_ATO; |
Douglas Gilbert | c220609 | 2016-04-25 12:16:31 -0400 | [diff] [blame] | 573 | static int sdebug_jdelay = DEF_JDELAY; /* if > 0 then unit is jiffies */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 574 | static int sdebug_dev_size_mb = DEF_DEV_SIZE_MB; |
| 575 | static int sdebug_dif = DEF_DIF; |
| 576 | static int sdebug_dix = DEF_DIX; |
| 577 | static int sdebug_dsense = DEF_D_SENSE; |
| 578 | static int sdebug_every_nth = DEF_EVERY_NTH; |
| 579 | static int sdebug_fake_rw = DEF_FAKE_RW; |
| 580 | static unsigned int sdebug_guard = DEF_GUARD; |
| 581 | static int sdebug_lowest_aligned = DEF_LOWEST_ALIGNED; |
| 582 | static int sdebug_max_luns = DEF_MAX_LUNS; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 583 | static int sdebug_max_queue = SDEBUG_CANQUEUE; /* per submit queue */ |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 584 | static atomic_t retired_max_queue; /* if > 0 then was prior max_queue */ |
Douglas Gilbert | c220609 | 2016-04-25 12:16:31 -0400 | [diff] [blame] | 585 | static int sdebug_ndelay = DEF_NDELAY; /* if > 0 then unit is nanoseconds */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 586 | static int sdebug_no_lun_0 = DEF_NO_LUN_0; |
| 587 | static int sdebug_no_uld; |
| 588 | static int sdebug_num_parts = DEF_NUM_PARTS; |
| 589 | static int sdebug_num_tgts = DEF_NUM_TGTS; /* targets per host */ |
| 590 | static int sdebug_opt_blks = DEF_OPT_BLKS; |
| 591 | static int sdebug_opts = DEF_OPTS; |
| 592 | static int sdebug_physblk_exp = DEF_PHYSBLK_EXP; |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 593 | static int sdebug_ptype = DEF_PTYPE; /* SCSI peripheral device type */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 594 | static int sdebug_scsi_level = DEF_SCSI_LEVEL; |
| 595 | static int sdebug_sector_size = DEF_SECTOR_SIZE; |
| 596 | static int sdebug_virtual_gb = DEF_VIRTUAL_GB; |
| 597 | static int sdebug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; |
| 598 | static unsigned int sdebug_lbpu = DEF_LBPU; |
| 599 | static unsigned int sdebug_lbpws = DEF_LBPWS; |
| 600 | static unsigned int sdebug_lbpws10 = DEF_LBPWS10; |
| 601 | static unsigned int sdebug_lbprz = DEF_LBPRZ; |
| 602 | static unsigned int sdebug_unmap_alignment = DEF_UNMAP_ALIGNMENT; |
| 603 | static unsigned int sdebug_unmap_granularity = DEF_UNMAP_GRANULARITY; |
| 604 | static unsigned int sdebug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS; |
| 605 | static unsigned int sdebug_unmap_max_desc = DEF_UNMAP_MAX_DESC; |
| 606 | static unsigned int sdebug_write_same_length = DEF_WRITESAME_LENGTH; |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 607 | static int sdebug_uuid_ctl = DEF_UUID_CTL; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 608 | static bool sdebug_removable = DEF_REMOVABLE; |
| 609 | static bool sdebug_clustering; |
| 610 | static bool sdebug_host_lock = DEF_HOST_LOCK; |
| 611 | static bool sdebug_strict = DEF_STRICT; |
Douglas Gilbert | 817fd66 | 2014-11-24 20:18:02 -0500 | [diff] [blame] | 612 | static bool sdebug_any_injecting_opt; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 613 | static bool sdebug_verbose; |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 614 | static bool have_dif_prot; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 615 | static bool sdebug_statistics = DEF_STATISTICS; |
| 616 | static bool sdebug_mq_active; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 618 | static unsigned int sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | static sector_t sdebug_capacity; /* in sectors */ |
| 620 | |
| 621 | /* old BIOS stuff, kernel may get rid of them but some mode sense pages |
| 622 | may still need them */ |
| 623 | static int sdebug_heads; /* heads per disk */ |
| 624 | static int sdebug_cylinders_per; /* cylinders per surface */ |
| 625 | static int sdebug_sectors_per; /* sectors per cylinder */ |
| 626 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | static LIST_HEAD(sdebug_host_list); |
| 628 | static DEFINE_SPINLOCK(sdebug_host_list_lock); |
| 629 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 630 | static unsigned char *fake_storep; /* ramdisk storage */ |
Christoph Hellwig | 6ebf105 | 2016-09-11 19:35:39 +0200 | [diff] [blame] | 631 | static struct t10_pi_tuple *dif_storep; /* protection info */ |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 632 | static void *map_storep; /* provisioning map */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 634 | static unsigned long map_size; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 635 | static int num_aborts; |
| 636 | static int num_dev_resets; |
| 637 | static int num_target_resets; |
| 638 | static int num_bus_resets; |
| 639 | static int num_host_resets; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 640 | static int dix_writes; |
| 641 | static int dix_reads; |
| 642 | static int dif_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 644 | static int submit_queues = DEF_SUBMIT_QUEUES; /* > 1 for multi-queue (mq) */ |
| 645 | static struct sdebug_queue *sdebug_q_arr; /* ptr to array of submit queues */ |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 646 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | static DEFINE_RWLOCK(atomic_rw); |
| 648 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 649 | static char sdebug_proc_name[] = MY_NAME; |
| 650 | static const char *my_name = MY_NAME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | static struct bus_type pseudo_lld_bus; |
| 653 | |
| 654 | static struct device_driver sdebug_driverfs_driver = { |
| 655 | .name = sdebug_proc_name, |
| 656 | .bus = &pseudo_lld_bus, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | }; |
| 658 | |
| 659 | static const int check_condition_result = |
| 660 | (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
| 661 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 662 | static const int illegal_condition_result = |
| 663 | (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; |
| 664 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 665 | static const int device_qfull_result = |
| 666 | (DID_OK << 16) | (COMMAND_COMPLETE << 8) | SAM_STAT_TASK_SET_FULL; |
| 667 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 668 | |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 669 | /* Only do the extra work involved in logical block provisioning if one or |
| 670 | * more of the lbpu, lbpws or lbpws10 parameters are given and we are doing |
| 671 | * real reads and writes (i.e. not skipping them for speed). |
| 672 | */ |
| 673 | static inline bool scsi_debug_lbp(void) |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 674 | { |
| 675 | return 0 == sdebug_fake_rw && |
| 676 | (sdebug_lbpu || sdebug_lbpws || sdebug_lbpws10); |
| 677 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 678 | |
Akinobu Mita | 14faa94 | 2013-09-18 21:27:24 +0900 | [diff] [blame] | 679 | static void *fake_store(unsigned long long lba) |
| 680 | { |
| 681 | lba = do_div(lba, sdebug_store_sectors); |
| 682 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 683 | return fake_storep + lba * sdebug_sector_size; |
Akinobu Mita | 14faa94 | 2013-09-18 21:27:24 +0900 | [diff] [blame] | 684 | } |
| 685 | |
Christoph Hellwig | 6ebf105 | 2016-09-11 19:35:39 +0200 | [diff] [blame] | 686 | static struct t10_pi_tuple *dif_store(sector_t sector) |
Akinobu Mita | 14faa94 | 2013-09-18 21:27:24 +0900 | [diff] [blame] | 687 | { |
Arnd Bergmann | 4941311 | 2015-11-20 17:38:28 +0100 | [diff] [blame] | 688 | sector = sector_div(sector, sdebug_store_sectors); |
Akinobu Mita | 14faa94 | 2013-09-18 21:27:24 +0900 | [diff] [blame] | 689 | |
| 690 | return dif_storep + sector; |
| 691 | } |
| 692 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 693 | static void sdebug_max_tgts_luns(void) |
| 694 | { |
| 695 | struct sdebug_host_info *sdbg_host; |
| 696 | struct Scsi_Host *hpnt; |
| 697 | |
| 698 | spin_lock(&sdebug_host_list_lock); |
| 699 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
| 700 | hpnt = sdbg_host->shost; |
| 701 | if ((hpnt->this_id >= 0) && |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 702 | (sdebug_num_tgts > hpnt->this_id)) |
| 703 | hpnt->max_id = sdebug_num_tgts + 1; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 704 | else |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 705 | hpnt->max_id = sdebug_num_tgts; |
| 706 | /* sdebug_max_luns; */ |
Tomas Winkler | f2d3fd2 | 2015-07-28 16:54:25 +0300 | [diff] [blame] | 707 | hpnt->max_lun = SCSI_W_LUN_REPORT_LUNS + 1; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 708 | } |
| 709 | spin_unlock(&sdebug_host_list_lock); |
| 710 | } |
| 711 | |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 712 | enum sdeb_cmd_data {SDEB_IN_DATA = 0, SDEB_IN_CDB = 1}; |
| 713 | |
| 714 | /* Set in_bit to -1 to indicate no bit position of invalid field */ |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 715 | static void mk_sense_invalid_fld(struct scsi_cmnd *scp, |
| 716 | enum sdeb_cmd_data c_d, |
| 717 | int in_byte, int in_bit) |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 718 | { |
| 719 | unsigned char *sbuff; |
| 720 | u8 sks[4]; |
| 721 | int sl, asc; |
| 722 | |
| 723 | sbuff = scp->sense_buffer; |
| 724 | if (!sbuff) { |
| 725 | sdev_printk(KERN_ERR, scp->device, |
| 726 | "%s: sense_buffer is NULL\n", __func__); |
| 727 | return; |
| 728 | } |
| 729 | asc = c_d ? INVALID_FIELD_IN_CDB : INVALID_FIELD_IN_PARAM_LIST; |
| 730 | memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 731 | scsi_build_sense_buffer(sdebug_dsense, sbuff, ILLEGAL_REQUEST, asc, 0); |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 732 | memset(sks, 0, sizeof(sks)); |
| 733 | sks[0] = 0x80; |
| 734 | if (c_d) |
| 735 | sks[0] |= 0x40; |
| 736 | if (in_bit >= 0) { |
| 737 | sks[0] |= 0x8; |
| 738 | sks[0] |= 0x7 & in_bit; |
| 739 | } |
| 740 | put_unaligned_be16(in_byte, sks + 1); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 741 | if (sdebug_dsense) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 742 | sl = sbuff[7] + 8; |
| 743 | sbuff[7] = sl; |
| 744 | sbuff[sl] = 0x2; |
| 745 | sbuff[sl + 1] = 0x6; |
| 746 | memcpy(sbuff + sl + 4, sks, 3); |
| 747 | } else |
| 748 | memcpy(sbuff + 15, sks, 3); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 749 | if (sdebug_verbose) |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 750 | sdev_printk(KERN_INFO, scp->device, "%s: [sense_key,asc,ascq" |
| 751 | "]: [0x5,0x%x,0x0] %c byte=%d, bit=%d\n", |
| 752 | my_name, asc, c_d ? 'C' : 'D', in_byte, in_bit); |
| 753 | } |
| 754 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 755 | 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] | 756 | { |
| 757 | unsigned char *sbuff; |
| 758 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 759 | sbuff = scp->sense_buffer; |
| 760 | if (!sbuff) { |
| 761 | sdev_printk(KERN_ERR, scp->device, |
| 762 | "%s: sense_buffer is NULL\n", __func__); |
| 763 | return; |
| 764 | } |
| 765 | memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 766 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 767 | scsi_build_sense_buffer(sdebug_dsense, sbuff, key, asc, asq); |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 768 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 769 | if (sdebug_verbose) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 770 | sdev_printk(KERN_INFO, scp->device, |
| 771 | "%s: [sense_key,asc,ascq]: [0x%x,0x%x,0x%x]\n", |
| 772 | my_name, key, asc, asq); |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 773 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 775 | static void mk_sense_invalid_opcode(struct scsi_cmnd *scp) |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 776 | { |
| 777 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_OPCODE, 0); |
| 778 | } |
| 779 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
| 781 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 782 | if (sdebug_verbose) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 783 | if (0x1261 == cmd) |
| 784 | sdev_printk(KERN_INFO, dev, |
| 785 | "%s: BLKFLSBUF [0x1261]\n", __func__); |
| 786 | else if (0x5331 == cmd) |
| 787 | sdev_printk(KERN_INFO, dev, |
| 788 | "%s: CDROM_GET_CAPABILITY [0x5331]\n", |
| 789 | __func__); |
| 790 | else |
| 791 | sdev_printk(KERN_INFO, dev, "%s: cmd=0x%x\n", |
| 792 | __func__, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | } |
| 794 | return -EINVAL; |
| 795 | /* return -ENOTTY; // correct return but upsets fdisk */ |
| 796 | } |
| 797 | |
Ewan D. Milne | 19c8ead | 2014-12-04 11:49:27 -0500 | [diff] [blame] | 798 | static void clear_luns_changed_on_target(struct sdebug_dev_info *devip) |
| 799 | { |
| 800 | struct sdebug_host_info *sdhp; |
| 801 | struct sdebug_dev_info *dp; |
| 802 | |
| 803 | spin_lock(&sdebug_host_list_lock); |
| 804 | list_for_each_entry(sdhp, &sdebug_host_list, host_list) { |
| 805 | list_for_each_entry(dp, &sdhp->dev_info_list, dev_list) { |
| 806 | if ((devip->sdbg_host == dp->sdbg_host) && |
| 807 | (devip->target == dp->target)) |
| 808 | clear_bit(SDEBUG_UA_LUNS_CHANGED, dp->uas_bm); |
| 809 | } |
| 810 | } |
| 811 | spin_unlock(&sdebug_host_list_lock); |
| 812 | } |
| 813 | |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 814 | static int make_ua(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 816 | int k; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 817 | |
| 818 | k = find_first_bit(devip->uas_bm, SDEBUG_NUM_UAS); |
| 819 | if (k != SDEBUG_NUM_UAS) { |
| 820 | const char *cp = NULL; |
| 821 | |
| 822 | switch (k) { |
| 823 | case SDEBUG_UA_POR: |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 824 | mk_sense_buffer(scp, UNIT_ATTENTION, UA_RESET_ASC, |
| 825 | POWER_ON_RESET_ASCQ); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 826 | if (sdebug_verbose) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 827 | cp = "power on reset"; |
| 828 | break; |
| 829 | case SDEBUG_UA_BUS_RESET: |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 830 | mk_sense_buffer(scp, UNIT_ATTENTION, UA_RESET_ASC, |
| 831 | BUS_RESET_ASCQ); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 832 | if (sdebug_verbose) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 833 | cp = "bus reset"; |
| 834 | break; |
| 835 | case SDEBUG_UA_MODE_CHANGED: |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 836 | mk_sense_buffer(scp, UNIT_ATTENTION, UA_CHANGED_ASC, |
| 837 | MODE_CHANGED_ASCQ); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 838 | if (sdebug_verbose) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 839 | cp = "mode parameters changed"; |
| 840 | break; |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 841 | case SDEBUG_UA_CAPACITY_CHANGED: |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 842 | mk_sense_buffer(scp, UNIT_ATTENTION, UA_CHANGED_ASC, |
| 843 | CAPACITY_CHANGED_ASCQ); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 844 | if (sdebug_verbose) |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 845 | cp = "capacity data changed"; |
Ewan D. Milne | f49accf | 2014-12-04 11:49:25 -0500 | [diff] [blame] | 846 | break; |
Ewan D. Milne | acafd0b | 2014-12-04 11:49:28 -0500 | [diff] [blame] | 847 | case SDEBUG_UA_MICROCODE_CHANGED: |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 848 | mk_sense_buffer(scp, UNIT_ATTENTION, |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 849 | TARGET_CHANGED_ASC, |
| 850 | MICROCODE_CHANGED_ASCQ); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 851 | if (sdebug_verbose) |
Ewan D. Milne | acafd0b | 2014-12-04 11:49:28 -0500 | [diff] [blame] | 852 | cp = "microcode has been changed"; |
| 853 | break; |
| 854 | case SDEBUG_UA_MICROCODE_CHANGED_WO_RESET: |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 855 | mk_sense_buffer(scp, UNIT_ATTENTION, |
Ewan D. Milne | acafd0b | 2014-12-04 11:49:28 -0500 | [diff] [blame] | 856 | TARGET_CHANGED_ASC, |
| 857 | MICROCODE_CHANGED_WO_RESET_ASCQ); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 858 | if (sdebug_verbose) |
Ewan D. Milne | acafd0b | 2014-12-04 11:49:28 -0500 | [diff] [blame] | 859 | cp = "microcode has been changed without reset"; |
| 860 | break; |
Ewan D. Milne | 19c8ead | 2014-12-04 11:49:27 -0500 | [diff] [blame] | 861 | case SDEBUG_UA_LUNS_CHANGED: |
| 862 | /* |
| 863 | * SPC-3 behavior is to report a UNIT ATTENTION with |
| 864 | * ASC/ASCQ REPORTED LUNS DATA HAS CHANGED on every LUN |
| 865 | * on the target, until a REPORT LUNS command is |
| 866 | * received. SPC-4 behavior is to report it only once. |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 867 | * NOTE: sdebug_scsi_level does not use the same |
Ewan D. Milne | 19c8ead | 2014-12-04 11:49:27 -0500 | [diff] [blame] | 868 | * values as struct scsi_device->scsi_level. |
| 869 | */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 870 | if (sdebug_scsi_level >= 6) /* SPC-4 and above */ |
Ewan D. Milne | 19c8ead | 2014-12-04 11:49:27 -0500 | [diff] [blame] | 871 | clear_luns_changed_on_target(devip); |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 872 | mk_sense_buffer(scp, UNIT_ATTENTION, |
Ewan D. Milne | 19c8ead | 2014-12-04 11:49:27 -0500 | [diff] [blame] | 873 | TARGET_CHANGED_ASC, |
| 874 | LUNS_CHANGED_ASCQ); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 875 | if (sdebug_verbose) |
Ewan D. Milne | 19c8ead | 2014-12-04 11:49:27 -0500 | [diff] [blame] | 876 | cp = "reported luns data has changed"; |
| 877 | break; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 878 | default: |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 879 | pr_warn("unexpected unit attention code=%d\n", k); |
| 880 | if (sdebug_verbose) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 881 | cp = "unknown"; |
| 882 | break; |
| 883 | } |
| 884 | clear_bit(k, devip->uas_bm); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 885 | if (sdebug_verbose) |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 886 | sdev_printk(KERN_INFO, scp->device, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 887 | "%s reports: Unit attention: %s\n", |
| 888 | my_name, cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | return check_condition_result; |
| 890 | } |
| 891 | return 0; |
| 892 | } |
| 893 | |
Douglas Gilbert | fb0cc8d | 2016-05-31 17:15:07 -0400 | [diff] [blame] | 894 | /* Build SCSI "data-in" buffer. Returns 0 if ok else (DID_ERROR << 16). */ |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 895 | 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] | 896 | int arr_len) |
| 897 | { |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 898 | int act_len; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 899 | struct scsi_data_buffer *sdb = scsi_in(scp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 901 | if (!sdb->length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | return 0; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 903 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 904 | return DID_ERROR << 16; |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 905 | |
| 906 | act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, |
| 907 | arr, arr_len); |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 908 | sdb->resid = scsi_bufflen(scp) - act_len; |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 909 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | return 0; |
| 911 | } |
| 912 | |
Douglas Gilbert | fb0cc8d | 2016-05-31 17:15:07 -0400 | [diff] [blame] | 913 | /* Partial build of SCSI "data-in" buffer. Returns 0 if ok else |
| 914 | * (DID_ERROR << 16). Can write to offset in data-in buffer. If multiple |
| 915 | * calls, not required to write in ascending offset order. Assumes resid |
| 916 | * set to scsi_bufflen() prior to any calls. |
| 917 | */ |
| 918 | static int p_fill_from_dev_buffer(struct scsi_cmnd *scp, const void *arr, |
| 919 | int arr_len, unsigned int off_dst) |
| 920 | { |
| 921 | int act_len, n; |
| 922 | struct scsi_data_buffer *sdb = scsi_in(scp); |
| 923 | off_t skip = off_dst; |
| 924 | |
| 925 | if (sdb->length <= off_dst) |
| 926 | return 0; |
| 927 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
| 928 | return DID_ERROR << 16; |
| 929 | |
| 930 | act_len = sg_pcopy_from_buffer(sdb->table.sgl, sdb->table.nents, |
| 931 | arr, arr_len, skip); |
| 932 | pr_debug("%s: off_dst=%u, scsi_bufflen=%u, act_len=%u, resid=%d\n", |
| 933 | __func__, off_dst, scsi_bufflen(scp), act_len, sdb->resid); |
| 934 | n = (int)scsi_bufflen(scp) - ((int)off_dst + act_len); |
| 935 | sdb->resid = min(sdb->resid, n); |
| 936 | return 0; |
| 937 | } |
| 938 | |
| 939 | /* Fetches from SCSI "data-out" buffer. Returns number of bytes fetched into |
| 940 | * 'arr' or -1 if error. |
| 941 | */ |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 942 | static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
| 943 | int arr_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | { |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 945 | if (!scsi_bufflen(scp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | return 0; |
FUJITA Tomonori | 072d0bb | 2008-01-23 01:32:00 +0900 | [diff] [blame] | 947 | if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | return -1; |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 949 | |
| 950 | return scsi_sg_copy_to_buffer(scp, arr, arr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | } |
| 952 | |
| 953 | |
| 954 | static const char * inq_vendor_id = "Linux "; |
| 955 | static const char * inq_product_id = "scsi_debug "; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 956 | static const char *inq_product_rev = "0186"; /* version less '.' */ |
Douglas Gilbert | 1b37bd6 | 2016-05-06 00:40:29 -0400 | [diff] [blame] | 957 | /* Use some locally assigned NAAs for SAS addresses. */ |
| 958 | static const u64 naa3_comp_a = 0x3222222000000000ULL; |
| 959 | static const u64 naa3_comp_b = 0x3333333000000000ULL; |
| 960 | static const u64 naa3_comp_c = 0x3111111000000000ULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 962 | /* Device identification VPD page. Returns number of bytes placed in arr */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 963 | static int inquiry_vpd_83(unsigned char *arr, int port_group_id, |
| 964 | int target_dev_id, int dev_id_num, |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 965 | const char *dev_id_str, int dev_id_str_len, |
| 966 | const uuid_be *lu_name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 968 | int num, port_a; |
| 969 | char b[32]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 971 | port_a = target_dev_id + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | /* T10 vendor identifier field format (faked) */ |
| 973 | arr[0] = 0x2; /* ASCII */ |
| 974 | arr[1] = 0x1; |
| 975 | arr[2] = 0x0; |
| 976 | memcpy(&arr[4], inq_vendor_id, 8); |
| 977 | memcpy(&arr[12], inq_product_id, 16); |
| 978 | memcpy(&arr[28], dev_id_str, dev_id_str_len); |
| 979 | num = 8 + 16 + dev_id_str_len; |
| 980 | arr[3] = num; |
| 981 | num += 4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 982 | if (dev_id_num >= 0) { |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 983 | if (sdebug_uuid_ctl) { |
| 984 | /* Locally assigned UUID */ |
| 985 | arr[num++] = 0x1; /* binary (not necessarily sas) */ |
| 986 | arr[num++] = 0xa; /* PIV=0, lu, naa */ |
| 987 | arr[num++] = 0x0; |
| 988 | arr[num++] = 0x12; |
| 989 | arr[num++] = 0x10; /* uuid type=1, locally assigned */ |
| 990 | arr[num++] = 0x0; |
| 991 | memcpy(arr + num, lu_name, 16); |
| 992 | num += 16; |
| 993 | } else { |
Douglas Gilbert | 1b37bd6 | 2016-05-06 00:40:29 -0400 | [diff] [blame] | 994 | /* NAA-3, Logical unit identifier (binary) */ |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 995 | arr[num++] = 0x1; /* binary (not necessarily sas) */ |
| 996 | arr[num++] = 0x3; /* PIV=0, lu, naa */ |
| 997 | arr[num++] = 0x0; |
| 998 | arr[num++] = 0x8; |
Douglas Gilbert | 1b37bd6 | 2016-05-06 00:40:29 -0400 | [diff] [blame] | 999 | put_unaligned_be64(naa3_comp_b + dev_id_num, arr + num); |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 1000 | num += 8; |
| 1001 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1002 | /* Target relative port number */ |
| 1003 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 1004 | arr[num++] = 0x94; /* PIV=1, target port, rel port */ |
| 1005 | arr[num++] = 0x0; /* reserved */ |
| 1006 | arr[num++] = 0x4; /* length */ |
| 1007 | arr[num++] = 0x0; /* reserved */ |
| 1008 | arr[num++] = 0x0; /* reserved */ |
| 1009 | arr[num++] = 0x0; |
| 1010 | arr[num++] = 0x1; /* relative port A */ |
| 1011 | } |
Douglas Gilbert | 1b37bd6 | 2016-05-06 00:40:29 -0400 | [diff] [blame] | 1012 | /* NAA-3, Target port identifier */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1013 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 1014 | arr[num++] = 0x93; /* piv=1, target port, naa */ |
| 1015 | arr[num++] = 0x0; |
| 1016 | arr[num++] = 0x8; |
Douglas Gilbert | 1b37bd6 | 2016-05-06 00:40:29 -0400 | [diff] [blame] | 1017 | put_unaligned_be64(naa3_comp_a + port_a, arr + num); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1018 | num += 8; |
Douglas Gilbert | 1b37bd6 | 2016-05-06 00:40:29 -0400 | [diff] [blame] | 1019 | /* NAA-3, Target port group identifier */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1020 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 1021 | arr[num++] = 0x95; /* piv=1, target port group id */ |
| 1022 | arr[num++] = 0x0; |
| 1023 | arr[num++] = 0x4; |
| 1024 | arr[num++] = 0; |
| 1025 | arr[num++] = 0; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1026 | put_unaligned_be16(port_group_id, arr + num); |
| 1027 | num += 2; |
Douglas Gilbert | 1b37bd6 | 2016-05-06 00:40:29 -0400 | [diff] [blame] | 1028 | /* NAA-3, Target device identifier */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1029 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 1030 | arr[num++] = 0xa3; /* piv=1, target device, naa */ |
| 1031 | arr[num++] = 0x0; |
| 1032 | arr[num++] = 0x8; |
Douglas Gilbert | 1b37bd6 | 2016-05-06 00:40:29 -0400 | [diff] [blame] | 1033 | put_unaligned_be64(naa3_comp_a + target_dev_id, arr + num); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1034 | num += 8; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1035 | /* SCSI name string: Target device identifier */ |
| 1036 | arr[num++] = 0x63; /* proto=sas, UTF-8 */ |
| 1037 | arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ |
| 1038 | arr[num++] = 0x0; |
| 1039 | arr[num++] = 24; |
Douglas Gilbert | 1b37bd6 | 2016-05-06 00:40:29 -0400 | [diff] [blame] | 1040 | memcpy(arr + num, "naa.32222220", 12); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1041 | num += 12; |
| 1042 | snprintf(b, sizeof(b), "%08X", target_dev_id); |
| 1043 | memcpy(arr + num, b, 8); |
| 1044 | num += 8; |
| 1045 | memset(arr + num, 0, 4); |
| 1046 | num += 4; |
| 1047 | return num; |
| 1048 | } |
| 1049 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1050 | static unsigned char vpd84_data[] = { |
| 1051 | /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, |
| 1052 | 0x22,0x22,0x22,0x0,0xbb,0x1, |
| 1053 | 0x22,0x22,0x22,0x0,0xbb,0x2, |
| 1054 | }; |
| 1055 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1056 | /* Software interface identification VPD page */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1057 | static int inquiry_vpd_84(unsigned char *arr) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1058 | { |
| 1059 | memcpy(arr, vpd84_data, sizeof(vpd84_data)); |
| 1060 | return sizeof(vpd84_data); |
| 1061 | } |
| 1062 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1063 | /* Management network addresses VPD page */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1064 | static int inquiry_vpd_85(unsigned char *arr) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1065 | { |
| 1066 | int num = 0; |
| 1067 | const char * na1 = "https://www.kernel.org/config"; |
| 1068 | const char * na2 = "http://www.kernel.org/log"; |
| 1069 | int plen, olen; |
| 1070 | |
| 1071 | arr[num++] = 0x1; /* lu, storage config */ |
| 1072 | arr[num++] = 0x0; /* reserved */ |
| 1073 | arr[num++] = 0x0; |
| 1074 | olen = strlen(na1); |
| 1075 | plen = olen + 1; |
| 1076 | if (plen % 4) |
| 1077 | plen = ((plen / 4) + 1) * 4; |
| 1078 | arr[num++] = plen; /* length, null termianted, padded */ |
| 1079 | memcpy(arr + num, na1, olen); |
| 1080 | memset(arr + num + olen, 0, plen - olen); |
| 1081 | num += plen; |
| 1082 | |
| 1083 | arr[num++] = 0x4; /* lu, logging */ |
| 1084 | arr[num++] = 0x0; /* reserved */ |
| 1085 | arr[num++] = 0x0; |
| 1086 | olen = strlen(na2); |
| 1087 | plen = olen + 1; |
| 1088 | if (plen % 4) |
| 1089 | plen = ((plen / 4) + 1) * 4; |
| 1090 | arr[num++] = plen; /* length, null terminated, padded */ |
| 1091 | memcpy(arr + num, na2, olen); |
| 1092 | memset(arr + num + olen, 0, plen - olen); |
| 1093 | num += plen; |
| 1094 | |
| 1095 | return num; |
| 1096 | } |
| 1097 | |
| 1098 | /* SCSI ports VPD page */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1099 | static int inquiry_vpd_88(unsigned char *arr, int target_dev_id) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1100 | { |
| 1101 | int num = 0; |
| 1102 | int port_a, port_b; |
| 1103 | |
| 1104 | port_a = target_dev_id + 1; |
| 1105 | port_b = port_a + 1; |
| 1106 | arr[num++] = 0x0; /* reserved */ |
| 1107 | arr[num++] = 0x0; /* reserved */ |
| 1108 | arr[num++] = 0x0; |
| 1109 | arr[num++] = 0x1; /* relative port 1 (primary) */ |
| 1110 | memset(arr + num, 0, 6); |
| 1111 | num += 6; |
| 1112 | arr[num++] = 0x0; |
| 1113 | arr[num++] = 12; /* length tp descriptor */ |
| 1114 | /* naa-5 target port identifier (A) */ |
| 1115 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 1116 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 1117 | arr[num++] = 0x0; /* reserved */ |
| 1118 | arr[num++] = 0x8; /* length */ |
Douglas Gilbert | 1b37bd6 | 2016-05-06 00:40:29 -0400 | [diff] [blame] | 1119 | put_unaligned_be64(naa3_comp_a + port_a, arr + num); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1120 | num += 8; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1121 | arr[num++] = 0x0; /* reserved */ |
| 1122 | arr[num++] = 0x0; /* reserved */ |
| 1123 | arr[num++] = 0x0; |
| 1124 | arr[num++] = 0x2; /* relative port 2 (secondary) */ |
| 1125 | memset(arr + num, 0, 6); |
| 1126 | num += 6; |
| 1127 | arr[num++] = 0x0; |
| 1128 | arr[num++] = 12; /* length tp descriptor */ |
| 1129 | /* naa-5 target port identifier (B) */ |
| 1130 | arr[num++] = 0x61; /* proto=sas, binary */ |
| 1131 | arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| 1132 | arr[num++] = 0x0; /* reserved */ |
| 1133 | arr[num++] = 0x8; /* length */ |
Douglas Gilbert | 1b37bd6 | 2016-05-06 00:40:29 -0400 | [diff] [blame] | 1134 | put_unaligned_be64(naa3_comp_a + port_b, arr + num); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1135 | num += 8; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1136 | |
| 1137 | return num; |
| 1138 | } |
| 1139 | |
| 1140 | |
| 1141 | static unsigned char vpd89_data[] = { |
| 1142 | /* from 4th byte */ 0,0,0,0, |
| 1143 | 'l','i','n','u','x',' ',' ',' ', |
| 1144 | 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', |
| 1145 | '1','2','3','4', |
| 1146 | 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, |
| 1147 | 0xec,0,0,0, |
| 1148 | 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, |
| 1149 | 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, |
| 1150 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, |
| 1151 | 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, |
| 1152 | 0x53,0x41, |
| 1153 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 1154 | 0x20,0x20, |
| 1155 | 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 1156 | 0x10,0x80, |
| 1157 | 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, |
| 1158 | 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, |
| 1159 | 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, |
| 1160 | 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, |
| 1161 | 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, |
| 1162 | 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, |
| 1163 | 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, |
| 1164 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1165 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1166 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1167 | 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, |
| 1168 | 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, |
| 1169 | 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, |
| 1170 | 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, |
| 1171 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1172 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1173 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1174 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1175 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1176 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1177 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1178 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1179 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1180 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1181 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1182 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, |
| 1183 | }; |
| 1184 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1185 | /* ATA Information VPD page */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1186 | static int inquiry_vpd_89(unsigned char *arr) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1187 | { |
| 1188 | memcpy(arr, vpd89_data, sizeof(vpd89_data)); |
| 1189 | return sizeof(vpd89_data); |
| 1190 | } |
| 1191 | |
| 1192 | |
| 1193 | static unsigned char vpdb0_data[] = { |
Douglas Gilbert | 1e49f78 | 2009-10-29 01:48:31 -0400 | [diff] [blame] | 1194 | /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64, |
| 1195 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1196 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 1197 | 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] | 1198 | }; |
| 1199 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1200 | /* Block limits VPD page (SBC-3) */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1201 | static int inquiry_vpd_b0(unsigned char *arr) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1202 | { |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 1203 | unsigned int gran; |
| 1204 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1205 | memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1206 | |
| 1207 | /* Optimal transfer length granularity */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1208 | gran = 1 << sdebug_physblk_exp; |
| 1209 | put_unaligned_be16(gran, arr + 2); |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1210 | |
| 1211 | /* Maximum Transfer Length */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1212 | if (sdebug_store_sectors > 0x400) |
| 1213 | put_unaligned_be32(sdebug_store_sectors, arr + 4); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1214 | |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1215 | /* Optimal Transfer Length */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1216 | put_unaligned_be32(sdebug_opt_blks, &arr[8]); |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1217 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1218 | if (sdebug_lbpu) { |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1219 | /* Maximum Unmap LBA Count */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1220 | put_unaligned_be32(sdebug_unmap_max_blocks, &arr[16]); |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1221 | |
| 1222 | /* Maximum Unmap Block Descriptor Count */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1223 | put_unaligned_be32(sdebug_unmap_max_desc, &arr[20]); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1224 | } |
| 1225 | |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1226 | /* Unmap Granularity Alignment */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1227 | if (sdebug_unmap_alignment) { |
| 1228 | put_unaligned_be32(sdebug_unmap_alignment, &arr[28]); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1229 | arr[28] |= 0x80; /* UGAVALID */ |
| 1230 | } |
| 1231 | |
Martin K. Petersen | e308b3d | 2010-03-23 01:12:27 -0400 | [diff] [blame] | 1232 | /* Optimal Unmap Granularity */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1233 | put_unaligned_be32(sdebug_unmap_granularity, &arr[24]); |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1234 | |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 1235 | /* Maximum WRITE SAME Length */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1236 | put_unaligned_be64(sdebug_write_same_length, &arr[32]); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 1237 | |
| 1238 | return 0x3c; /* Mandatory page length for Logical Block Provisioning */ |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1239 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1240 | return sizeof(vpdb0_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | } |
| 1242 | |
Douglas Gilbert | 1e49f78 | 2009-10-29 01:48:31 -0400 | [diff] [blame] | 1243 | /* Block device characteristics VPD page (SBC-3) */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1244 | static int inquiry_vpd_b1(unsigned char *arr) |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 1245 | { |
| 1246 | memset(arr, 0, 0x3c); |
| 1247 | arr[0] = 0; |
Douglas Gilbert | 1e49f78 | 2009-10-29 01:48:31 -0400 | [diff] [blame] | 1248 | arr[1] = 1; /* non rotating medium (e.g. solid state) */ |
| 1249 | arr[2] = 0; |
| 1250 | arr[3] = 5; /* less than 1.8" */ |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 1251 | |
| 1252 | return 0x3c; |
| 1253 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1255 | /* Logical block provisioning VPD page (SBC-4) */ |
| 1256 | static int inquiry_vpd_b2(unsigned char *arr) |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1257 | { |
Martin K. Petersen | 3f0bc3b | 2012-03-08 10:48:29 -0500 | [diff] [blame] | 1258 | memset(arr, 0, 0x4); |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1259 | arr[0] = 0; /* threshold exponent */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1260 | if (sdebug_lbpu) |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1261 | arr[1] = 1 << 7; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1262 | if (sdebug_lbpws) |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1263 | arr[1] |= 1 << 6; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1264 | if (sdebug_lbpws10) |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 1265 | arr[1] |= 1 << 5; |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1266 | if (sdebug_lbprz && scsi_debug_lbp()) |
| 1267 | arr[1] |= (sdebug_lbprz & 0x7) << 2; /* sbc4r07 and later */ |
| 1268 | /* anc_sup=0; dp=0 (no provisioning group descriptor) */ |
| 1269 | /* minimum_percentage=0; provisioning_type=0 (unknown) */ |
| 1270 | /* threshold_percentage=0 */ |
Martin K. Petersen | 3f0bc3b | 2012-03-08 10:48:29 -0500 | [diff] [blame] | 1271 | return 0x4; |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1272 | } |
| 1273 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | #define SDEBUG_LONG_INQ_SZ 96 |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1275 | #define SDEBUG_MAX_INQ_ARR_SZ 584 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1277 | 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] | 1278 | { |
| 1279 | unsigned char pq_pdt; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1280 | unsigned char * arr; |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 1281 | unsigned char *cmd = scp->cmnd; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1282 | int alloc_len, n, ret; |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1283 | bool have_wlun, is_disk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1284 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1285 | alloc_len = get_unaligned_be16(cmd + 3); |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 1286 | arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
| 1287 | if (! arr) |
| 1288 | return DID_REQUEUE << 16; |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1289 | is_disk = (sdebug_ptype == TYPE_DISK); |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 1290 | have_wlun = scsi_is_wlun(scp->device->lun); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1291 | if (have_wlun) |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 1292 | pq_pdt = TYPE_WLUN; /* present, wlun */ |
| 1293 | else if (sdebug_no_lun_0 && (devip->lun == SDEBUG_LUN_0_VAL)) |
| 1294 | pq_pdt = 0x7f; /* not present, PQ=3, PDT=0x1f */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1295 | else |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1296 | pq_pdt = (sdebug_ptype & 0x1f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | arr[0] = pq_pdt; |
| 1298 | if (0x2 & cmd[1]) { /* CMDDT bit set */ |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 1299 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 1); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1300 | kfree(arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | return check_condition_result; |
| 1302 | } else if (0x1 & cmd[1]) { /* EVPD bit set */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1303 | int lu_id_num, port_group_id, target_dev_id, len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1304 | char lu_id_str[6]; |
| 1305 | int host_no = devip->sdbg_host->shost->host_no; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1307 | port_group_id = (((host_no + 1) & 0x7f) << 8) + |
| 1308 | (devip->channel & 0x7f); |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 1309 | if (sdebug_vpd_use_hostno == 0) |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1310 | host_no = 0; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1311 | lu_id_num = have_wlun ? -1 : (((host_no + 1) * 2000) + |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1312 | (devip->target * 1000) + devip->lun); |
| 1313 | target_dev_id = ((host_no + 1) * 2000) + |
| 1314 | (devip->target * 1000) - 3; |
| 1315 | len = scnprintf(lu_id_str, 6, "%d", lu_id_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | if (0 == cmd[2]) { /* supported vital product data pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1317 | arr[1] = cmd[2]; /*sanity */ |
| 1318 | n = 4; |
| 1319 | arr[n++] = 0x0; /* this page */ |
| 1320 | arr[n++] = 0x80; /* unit serial number */ |
| 1321 | arr[n++] = 0x83; /* device identification */ |
| 1322 | arr[n++] = 0x84; /* software interface ident. */ |
| 1323 | arr[n++] = 0x85; /* management network addresses */ |
| 1324 | arr[n++] = 0x86; /* extended inquiry */ |
| 1325 | arr[n++] = 0x87; /* mode page policy */ |
| 1326 | arr[n++] = 0x88; /* SCSI ports */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1327 | if (is_disk) { /* SBC only */ |
| 1328 | arr[n++] = 0x89; /* ATA information */ |
| 1329 | arr[n++] = 0xb0; /* Block limits */ |
| 1330 | arr[n++] = 0xb1; /* Block characteristics */ |
| 1331 | arr[n++] = 0xb2; /* Logical Block Prov */ |
| 1332 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1333 | arr[3] = n - 4; /* number of supported VPD pages */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | } else if (0x80 == cmd[2]) { /* unit serial number */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1335 | arr[1] = cmd[2]; /*sanity */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | arr[3] = len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1337 | memcpy(&arr[4], lu_id_str, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | } else if (0x83 == cmd[2]) { /* device identification */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1339 | arr[1] = cmd[2]; /*sanity */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1340 | arr[3] = inquiry_vpd_83(&arr[4], port_group_id, |
| 1341 | target_dev_id, lu_id_num, |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 1342 | lu_id_str, len, |
| 1343 | &devip->lu_name); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1344 | } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
| 1345 | arr[1] = cmd[2]; /*sanity */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1346 | arr[3] = inquiry_vpd_84(&arr[4]); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1347 | } else if (0x85 == cmd[2]) { /* Management network addresses */ |
| 1348 | arr[1] = cmd[2]; /*sanity */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1349 | arr[3] = inquiry_vpd_85(&arr[4]); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1350 | } else if (0x86 == cmd[2]) { /* extended inquiry */ |
| 1351 | arr[1] = cmd[2]; /*sanity */ |
| 1352 | arr[3] = 0x3c; /* number of following entries */ |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 1353 | if (sdebug_dif == T10_PI_TYPE3_PROTECTION) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1354 | arr[4] = 0x4; /* SPT: GRD_CHK:1 */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1355 | else if (have_dif_prot) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1356 | arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ |
| 1357 | else |
| 1358 | arr[4] = 0x0; /* no protection stuff */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1359 | arr[5] = 0x7; /* head of q, ordered + simple q's */ |
| 1360 | } else if (0x87 == cmd[2]) { /* mode page policy */ |
| 1361 | arr[1] = cmd[2]; /*sanity */ |
| 1362 | arr[3] = 0x8; /* number of following entries */ |
| 1363 | arr[4] = 0x2; /* disconnect-reconnect mp */ |
| 1364 | arr[6] = 0x80; /* mlus, shared */ |
| 1365 | arr[8] = 0x18; /* protocol specific lu */ |
| 1366 | arr[10] = 0x82; /* mlus, per initiator port */ |
| 1367 | } else if (0x88 == cmd[2]) { /* SCSI Ports */ |
| 1368 | arr[1] = cmd[2]; /*sanity */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1369 | arr[3] = inquiry_vpd_88(&arr[4], target_dev_id); |
| 1370 | } else if (is_disk && 0x89 == cmd[2]) { /* ATA information */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1371 | arr[1] = cmd[2]; /*sanity */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1372 | n = inquiry_vpd_89(&arr[4]); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1373 | put_unaligned_be16(n, arr + 2); |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1374 | } else if (is_disk && 0xb0 == cmd[2]) { /* Block limits */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1375 | arr[1] = cmd[2]; /*sanity */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1376 | arr[3] = inquiry_vpd_b0(&arr[4]); |
| 1377 | } else if (is_disk && 0xb1 == cmd[2]) { /* Block char. */ |
Matthew Wilcox | eac6e8e4 | 2008-06-19 10:02:58 -0600 | [diff] [blame] | 1378 | arr[1] = cmd[2]; /*sanity */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1379 | arr[3] = inquiry_vpd_b1(&arr[4]); |
| 1380 | } else if (is_disk && 0xb2 == cmd[2]) { /* LB Prov. */ |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 1381 | arr[1] = cmd[2]; /*sanity */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1382 | arr[3] = inquiry_vpd_b2(&arr[4]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | } else { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 1384 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1385 | kfree(arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | return check_condition_result; |
| 1387 | } |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1388 | len = min(get_unaligned_be16(arr + 2) + 4, alloc_len); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1389 | ret = fill_from_dev_buffer(scp, arr, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1390 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1391 | kfree(arr); |
| 1392 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | } |
| 1394 | /* drops through here for a standard inquiry */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1395 | arr[1] = sdebug_removable ? 0x80 : 0; /* Removable disk */ |
| 1396 | arr[2] = sdebug_scsi_level; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | arr[3] = 2; /* response_data_format==2 */ |
| 1398 | arr[4] = SDEBUG_LONG_INQ_SZ - 5; |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 1399 | arr[5] = (int)have_dif_prot; /* PROTECT bit */ |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 1400 | if (sdebug_vpd_use_hostno == 0) |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1401 | arr[5] = 0x10; /* claim: implicit TGPS */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1402 | arr[6] = 0x10; /* claim: MultiP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1404 | arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | memcpy(&arr[8], inq_vendor_id, 8); |
| 1406 | memcpy(&arr[16], inq_product_id, 16); |
| 1407 | memcpy(&arr[32], inq_product_rev, 4); |
| 1408 | /* version descriptors (2 bytes each) follow */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1409 | put_unaligned_be16(0xc0, arr + 58); /* SAM-6 no version claimed */ |
| 1410 | put_unaligned_be16(0x5c0, arr + 60); /* SPC-5 no version claimed */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1411 | n = 62; |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1412 | if (is_disk) { /* SBC-4 no version claimed */ |
| 1413 | put_unaligned_be16(0x600, arr + n); |
| 1414 | n += 2; |
| 1415 | } else if (sdebug_ptype == TYPE_TAPE) { /* SSC-4 rev 3 */ |
| 1416 | put_unaligned_be16(0x525, arr + n); |
| 1417 | n += 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | } |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1419 | put_unaligned_be16(0x2100, arr + n); /* SPL-4 no version claimed */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1420 | ret = fill_from_dev_buffer(scp, arr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1422 | kfree(arr); |
| 1423 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | } |
| 1425 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 1426 | static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 1427 | 0, 0, 0x0, 0x0}; |
| 1428 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | static int resp_requests(struct scsi_cmnd * scp, |
| 1430 | struct sdebug_dev_info * devip) |
| 1431 | { |
| 1432 | unsigned char * sbuff; |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 1433 | unsigned char *cmd = scp->cmnd; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1434 | unsigned char arr[SCSI_SENSE_BUFFERSIZE]; |
Tomas Winkler | 2492fc0 | 2015-07-28 16:54:26 +0300 | [diff] [blame] | 1435 | bool dsense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | int len = 18; |
| 1437 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1438 | memset(arr, 0, sizeof(arr)); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1439 | dsense = !!(cmd[1] & 1); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1440 | sbuff = scp->sense_buffer; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1441 | if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1442 | if (dsense) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1443 | arr[0] = 0x72; |
| 1444 | arr[1] = 0x0; /* NO_SENSE in sense_key */ |
| 1445 | arr[2] = THRESHOLD_EXCEEDED; |
| 1446 | arr[3] = 0xff; /* TEST set and MRIE==6 */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1447 | len = 8; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1448 | } else { |
| 1449 | arr[0] = 0x70; |
| 1450 | arr[2] = 0x0; /* NO_SENSE in sense_key */ |
| 1451 | arr[7] = 0xa; /* 18 byte sense buffer */ |
| 1452 | arr[12] = THRESHOLD_EXCEEDED; |
| 1453 | arr[13] = 0xff; /* TEST set and MRIE==6 */ |
| 1454 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1455 | } else { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1456 | memcpy(arr, sbuff, SCSI_SENSE_BUFFERSIZE); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1457 | if (arr[0] >= 0x70 && dsense == sdebug_dsense) |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1458 | ; /* have sense and formats match */ |
| 1459 | else if (arr[0] <= 0x70) { |
| 1460 | if (dsense) { |
| 1461 | memset(arr, 0, 8); |
| 1462 | arr[0] = 0x72; |
| 1463 | len = 8; |
| 1464 | } else { |
| 1465 | memset(arr, 0, 18); |
| 1466 | arr[0] = 0x70; |
| 1467 | arr[7] = 0xa; |
| 1468 | } |
| 1469 | } else if (dsense) { |
| 1470 | memset(arr, 0, 8); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1471 | arr[0] = 0x72; |
| 1472 | arr[1] = sbuff[2]; /* sense key */ |
| 1473 | arr[2] = sbuff[12]; /* asc */ |
| 1474 | arr[3] = sbuff[13]; /* ascq */ |
| 1475 | len = 8; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1476 | } else { |
| 1477 | memset(arr, 0, 18); |
| 1478 | arr[0] = 0x70; |
| 1479 | arr[2] = sbuff[1]; |
| 1480 | arr[7] = 0xa; |
| 1481 | arr[12] = sbuff[1]; |
| 1482 | arr[13] = sbuff[3]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1483 | } |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1484 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1485 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1486 | mk_sense_buffer(scp, 0, NO_ADDITIONAL_SENSE, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | return fill_from_dev_buffer(scp, arr, len); |
| 1488 | } |
| 1489 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1490 | static int resp_start_stop(struct scsi_cmnd * scp, |
| 1491 | struct sdebug_dev_info * devip) |
| 1492 | { |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 1493 | unsigned char *cmd = scp->cmnd; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 1494 | int power_cond, stop; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1495 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1496 | power_cond = (cmd[4] & 0xf0) >> 4; |
| 1497 | if (power_cond) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 1498 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, 7); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1499 | return check_condition_result; |
| 1500 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 1501 | stop = !(cmd[4] & 1); |
| 1502 | atomic_xchg(&devip->stopped, stop); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1503 | return 0; |
| 1504 | } |
| 1505 | |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 1506 | static sector_t get_sdebug_capacity(void) |
| 1507 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1508 | static const unsigned int gibibyte = 1073741824; |
| 1509 | |
| 1510 | if (sdebug_virtual_gb > 0) |
| 1511 | return (sector_t)sdebug_virtual_gb * |
| 1512 | (gibibyte / sdebug_sector_size); |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 1513 | else |
| 1514 | return sdebug_store_sectors; |
| 1515 | } |
| 1516 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1517 | #define SDEBUG_READCAP_ARR_SZ 8 |
| 1518 | static int resp_readcap(struct scsi_cmnd * scp, |
| 1519 | struct sdebug_dev_info * devip) |
| 1520 | { |
| 1521 | unsigned char arr[SDEBUG_READCAP_ARR_SZ]; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1522 | unsigned int capac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1523 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1524 | /* following just in case virtual_gb changed */ |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 1525 | sdebug_capacity = get_sdebug_capacity(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1527 | if (sdebug_capacity < 0xffffffff) { |
| 1528 | capac = (unsigned int)sdebug_capacity - 1; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1529 | put_unaligned_be32(capac, arr + 0); |
| 1530 | } else |
| 1531 | put_unaligned_be32(0xffffffff, arr + 0); |
| 1532 | put_unaligned_be16(sdebug_sector_size, arr + 6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1533 | return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
| 1534 | } |
| 1535 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1536 | #define SDEBUG_READCAP16_ARR_SZ 32 |
| 1537 | static int resp_readcap16(struct scsi_cmnd * scp, |
| 1538 | struct sdebug_dev_info * devip) |
| 1539 | { |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 1540 | unsigned char *cmd = scp->cmnd; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1541 | unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1542 | int alloc_len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1543 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1544 | alloc_len = get_unaligned_be32(cmd + 10); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1545 | /* following just in case virtual_gb changed */ |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 1546 | sdebug_capacity = get_sdebug_capacity(); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1547 | memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1548 | put_unaligned_be64((u64)(sdebug_capacity - 1), arr + 0); |
| 1549 | put_unaligned_be32(sdebug_sector_size, arr + 8); |
| 1550 | arr[13] = sdebug_physblk_exp & 0xf; |
| 1551 | arr[14] = (sdebug_lowest_aligned >> 8) & 0x3f; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1552 | |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 1553 | if (scsi_debug_lbp()) { |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 1554 | arr[14] |= 0x80; /* LBPME */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1555 | /* from sbc4r07, this LBPRZ field is 1 bit, but the LBPRZ in |
| 1556 | * the LB Provisioning VPD page is 3 bits. Note that lbprz=2 |
| 1557 | * in the wider field maps to 0 in this field. |
| 1558 | */ |
| 1559 | if (sdebug_lbprz & 1) /* precisely what the draft requires */ |
| 1560 | arr[14] |= 0x40; |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 1561 | } |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 1562 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1563 | arr[15] = sdebug_lowest_aligned & 0xff; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1564 | |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1565 | if (have_dif_prot) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1566 | arr[12] = (sdebug_dif - 1) << 1; /* P_TYPE */ |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1567 | arr[12] |= 1; /* PROT_EN */ |
| 1568 | } |
| 1569 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1570 | return fill_from_dev_buffer(scp, arr, |
| 1571 | min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); |
| 1572 | } |
| 1573 | |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1574 | #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
| 1575 | |
| 1576 | static int resp_report_tgtpgs(struct scsi_cmnd * scp, |
| 1577 | struct sdebug_dev_info * devip) |
| 1578 | { |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 1579 | unsigned char *cmd = scp->cmnd; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1580 | unsigned char * arr; |
| 1581 | int host_no = devip->sdbg_host->shost->host_no; |
| 1582 | int n, ret, alen, rlen; |
| 1583 | int port_group_a, port_group_b, port_a, port_b; |
| 1584 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1585 | alen = get_unaligned_be32(cmd + 6); |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 1586 | arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
| 1587 | if (! arr) |
| 1588 | return DID_REQUEUE << 16; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1589 | /* |
| 1590 | * EVPD page 0x88 states we have two ports, one |
| 1591 | * real and a fake port with no device connected. |
| 1592 | * So we create two port groups with one port each |
| 1593 | * and set the group with port B to unavailable. |
| 1594 | */ |
| 1595 | port_a = 0x1; /* relative port A */ |
| 1596 | port_b = 0x2; /* relative port B */ |
| 1597 | port_group_a = (((host_no + 1) & 0x7f) << 8) + |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1598 | (devip->channel & 0x7f); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1599 | port_group_b = (((host_no + 1) & 0x7f) << 8) + |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1600 | (devip->channel & 0x7f) + 0x80; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1601 | |
| 1602 | /* |
| 1603 | * The asymmetric access state is cycled according to the host_id. |
| 1604 | */ |
| 1605 | n = 4; |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 1606 | if (sdebug_vpd_use_hostno == 0) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1607 | arr[n++] = host_no % 3; /* Asymm access state */ |
| 1608 | arr[n++] = 0x0F; /* claim: all states are supported */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1609 | } else { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1610 | arr[n++] = 0x0; /* Active/Optimized path */ |
| 1611 | arr[n++] = 0x01; /* only support active/optimized paths */ |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1612 | } |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1613 | put_unaligned_be16(port_group_a, arr + n); |
| 1614 | n += 2; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1615 | arr[n++] = 0; /* Reserved */ |
| 1616 | arr[n++] = 0; /* Status code */ |
| 1617 | arr[n++] = 0; /* Vendor unique */ |
| 1618 | arr[n++] = 0x1; /* One port per group */ |
| 1619 | arr[n++] = 0; /* Reserved */ |
| 1620 | arr[n++] = 0; /* Reserved */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1621 | put_unaligned_be16(port_a, arr + n); |
| 1622 | n += 2; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1623 | arr[n++] = 3; /* Port unavailable */ |
| 1624 | arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1625 | put_unaligned_be16(port_group_b, arr + n); |
| 1626 | n += 2; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1627 | arr[n++] = 0; /* Reserved */ |
| 1628 | arr[n++] = 0; /* Status code */ |
| 1629 | arr[n++] = 0; /* Vendor unique */ |
| 1630 | arr[n++] = 0x1; /* One port per group */ |
| 1631 | arr[n++] = 0; /* Reserved */ |
| 1632 | arr[n++] = 0; /* Reserved */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1633 | put_unaligned_be16(port_b, arr + n); |
| 1634 | n += 2; |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1635 | |
| 1636 | rlen = n - 4; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1637 | put_unaligned_be32(rlen, arr + 0); |
Hannes Reinecke | 5a09e39 | 2006-10-20 09:58:47 +0200 | [diff] [blame] | 1638 | |
| 1639 | /* |
| 1640 | * Return the smallest value of either |
| 1641 | * - The allocated length |
| 1642 | * - The constructed command length |
| 1643 | * - The maximum array size |
| 1644 | */ |
| 1645 | rlen = min(alen,n); |
| 1646 | ret = fill_from_dev_buffer(scp, arr, |
| 1647 | min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); |
| 1648 | kfree(arr); |
| 1649 | return ret; |
| 1650 | } |
| 1651 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 1652 | static int resp_rsup_opcodes(struct scsi_cmnd *scp, |
| 1653 | struct sdebug_dev_info *devip) |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 1654 | { |
| 1655 | bool rctd; |
| 1656 | u8 reporting_opts, req_opcode, sdeb_i, supp; |
| 1657 | u16 req_sa, u; |
| 1658 | u32 alloc_len, a_len; |
| 1659 | int k, offset, len, errsts, count, bump, na; |
| 1660 | const struct opcode_info_t *oip; |
| 1661 | const struct opcode_info_t *r_oip; |
| 1662 | u8 *arr; |
| 1663 | u8 *cmd = scp->cmnd; |
| 1664 | |
| 1665 | rctd = !!(cmd[2] & 0x80); |
| 1666 | reporting_opts = cmd[2] & 0x7; |
| 1667 | req_opcode = cmd[3]; |
| 1668 | req_sa = get_unaligned_be16(cmd + 4); |
| 1669 | alloc_len = get_unaligned_be32(cmd + 6); |
Colin Ian King | 6d310df | 2015-01-22 11:20:40 +0000 | [diff] [blame] | 1670 | if (alloc_len < 4 || alloc_len > 0xffff) { |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 1671 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); |
| 1672 | return check_condition_result; |
| 1673 | } |
| 1674 | if (alloc_len > 8192) |
| 1675 | a_len = 8192; |
| 1676 | else |
| 1677 | a_len = alloc_len; |
Sasha Levin | 99531e6 | 2015-01-17 17:47:37 -0500 | [diff] [blame] | 1678 | arr = kzalloc((a_len < 256) ? 320 : a_len + 64, GFP_ATOMIC); |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 1679 | if (NULL == arr) { |
| 1680 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, |
| 1681 | INSUFF_RES_ASCQ); |
| 1682 | return check_condition_result; |
| 1683 | } |
| 1684 | switch (reporting_opts) { |
| 1685 | case 0: /* all commands */ |
| 1686 | /* count number of commands */ |
| 1687 | for (count = 0, oip = opcode_info_arr; |
| 1688 | oip->num_attached != 0xff; ++oip) { |
| 1689 | if (F_INV_OP & oip->flags) |
| 1690 | continue; |
| 1691 | count += (oip->num_attached + 1); |
| 1692 | } |
| 1693 | bump = rctd ? 20 : 8; |
| 1694 | put_unaligned_be32(count * bump, arr); |
| 1695 | for (offset = 4, oip = opcode_info_arr; |
| 1696 | oip->num_attached != 0xff && offset < a_len; ++oip) { |
| 1697 | if (F_INV_OP & oip->flags) |
| 1698 | continue; |
| 1699 | na = oip->num_attached; |
| 1700 | arr[offset] = oip->opcode; |
| 1701 | put_unaligned_be16(oip->sa, arr + offset + 2); |
| 1702 | if (rctd) |
| 1703 | arr[offset + 5] |= 0x2; |
| 1704 | if (FF_SA & oip->flags) |
| 1705 | arr[offset + 5] |= 0x1; |
| 1706 | put_unaligned_be16(oip->len_mask[0], arr + offset + 6); |
| 1707 | if (rctd) |
| 1708 | put_unaligned_be16(0xa, arr + offset + 8); |
| 1709 | r_oip = oip; |
| 1710 | for (k = 0, oip = oip->arrp; k < na; ++k, ++oip) { |
| 1711 | if (F_INV_OP & oip->flags) |
| 1712 | continue; |
| 1713 | offset += bump; |
| 1714 | arr[offset] = oip->opcode; |
| 1715 | put_unaligned_be16(oip->sa, arr + offset + 2); |
| 1716 | if (rctd) |
| 1717 | arr[offset + 5] |= 0x2; |
| 1718 | if (FF_SA & oip->flags) |
| 1719 | arr[offset + 5] |= 0x1; |
| 1720 | put_unaligned_be16(oip->len_mask[0], |
| 1721 | arr + offset + 6); |
| 1722 | if (rctd) |
| 1723 | put_unaligned_be16(0xa, |
| 1724 | arr + offset + 8); |
| 1725 | } |
| 1726 | oip = r_oip; |
| 1727 | offset += bump; |
| 1728 | } |
| 1729 | break; |
| 1730 | case 1: /* one command: opcode only */ |
| 1731 | case 2: /* one command: opcode plus service action */ |
| 1732 | case 3: /* one command: if sa==0 then opcode only else opcode+sa */ |
| 1733 | sdeb_i = opcode_ind_arr[req_opcode]; |
| 1734 | oip = &opcode_info_arr[sdeb_i]; |
| 1735 | if (F_INV_OP & oip->flags) { |
| 1736 | supp = 1; |
| 1737 | offset = 4; |
| 1738 | } else { |
| 1739 | if (1 == reporting_opts) { |
| 1740 | if (FF_SA & oip->flags) { |
| 1741 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, |
| 1742 | 2, 2); |
| 1743 | kfree(arr); |
| 1744 | return check_condition_result; |
| 1745 | } |
| 1746 | req_sa = 0; |
| 1747 | } else if (2 == reporting_opts && |
| 1748 | 0 == (FF_SA & oip->flags)) { |
| 1749 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, -1); |
| 1750 | kfree(arr); /* point at requested sa */ |
| 1751 | return check_condition_result; |
| 1752 | } |
| 1753 | if (0 == (FF_SA & oip->flags) && |
| 1754 | req_opcode == oip->opcode) |
| 1755 | supp = 3; |
| 1756 | else if (0 == (FF_SA & oip->flags)) { |
| 1757 | na = oip->num_attached; |
| 1758 | for (k = 0, oip = oip->arrp; k < na; |
| 1759 | ++k, ++oip) { |
| 1760 | if (req_opcode == oip->opcode) |
| 1761 | break; |
| 1762 | } |
| 1763 | supp = (k >= na) ? 1 : 3; |
| 1764 | } else if (req_sa != oip->sa) { |
| 1765 | na = oip->num_attached; |
| 1766 | for (k = 0, oip = oip->arrp; k < na; |
| 1767 | ++k, ++oip) { |
| 1768 | if (req_sa == oip->sa) |
| 1769 | break; |
| 1770 | } |
| 1771 | supp = (k >= na) ? 1 : 3; |
| 1772 | } else |
| 1773 | supp = 3; |
| 1774 | if (3 == supp) { |
| 1775 | u = oip->len_mask[0]; |
| 1776 | put_unaligned_be16(u, arr + 2); |
| 1777 | arr[4] = oip->opcode; |
| 1778 | for (k = 1; k < u; ++k) |
| 1779 | arr[4 + k] = (k < 16) ? |
| 1780 | oip->len_mask[k] : 0xff; |
| 1781 | offset = 4 + u; |
| 1782 | } else |
| 1783 | offset = 4; |
| 1784 | } |
| 1785 | arr[1] = (rctd ? 0x80 : 0) | supp; |
| 1786 | if (rctd) { |
| 1787 | put_unaligned_be16(0xa, arr + offset); |
| 1788 | offset += 12; |
| 1789 | } |
| 1790 | break; |
| 1791 | default: |
| 1792 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 2); |
| 1793 | kfree(arr); |
| 1794 | return check_condition_result; |
| 1795 | } |
| 1796 | offset = (offset < a_len) ? offset : a_len; |
| 1797 | len = (offset < alloc_len) ? offset : alloc_len; |
| 1798 | errsts = fill_from_dev_buffer(scp, arr, len); |
| 1799 | kfree(arr); |
| 1800 | return errsts; |
| 1801 | } |
| 1802 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 1803 | static int resp_rsup_tmfs(struct scsi_cmnd *scp, |
| 1804 | struct sdebug_dev_info *devip) |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 1805 | { |
| 1806 | bool repd; |
| 1807 | u32 alloc_len, len; |
| 1808 | u8 arr[16]; |
| 1809 | u8 *cmd = scp->cmnd; |
| 1810 | |
| 1811 | memset(arr, 0, sizeof(arr)); |
| 1812 | repd = !!(cmd[2] & 0x80); |
| 1813 | alloc_len = get_unaligned_be32(cmd + 6); |
| 1814 | if (alloc_len < 4) { |
| 1815 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); |
| 1816 | return check_condition_result; |
| 1817 | } |
| 1818 | arr[0] = 0xc8; /* ATS | ATSS | LURS */ |
| 1819 | arr[1] = 0x1; /* ITNRS */ |
| 1820 | if (repd) { |
| 1821 | arr[3] = 0xc; |
| 1822 | len = 16; |
| 1823 | } else |
| 1824 | len = 4; |
| 1825 | |
| 1826 | len = (len < alloc_len) ? len : alloc_len; |
| 1827 | return fill_from_dev_buffer(scp, arr, len); |
| 1828 | } |
| 1829 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1830 | /* <<Following mode page info copied from ST318451LW>> */ |
| 1831 | |
| 1832 | static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) |
| 1833 | { /* Read-Write Error Recovery page for mode_sense */ |
| 1834 | unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, |
| 1835 | 5, 0, 0xff, 0xff}; |
| 1836 | |
| 1837 | memcpy(p, err_recov_pg, sizeof(err_recov_pg)); |
| 1838 | if (1 == pcontrol) |
| 1839 | memset(p + 2, 0, sizeof(err_recov_pg) - 2); |
| 1840 | return sizeof(err_recov_pg); |
| 1841 | } |
| 1842 | |
| 1843 | static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) |
| 1844 | { /* Disconnect-Reconnect page for mode_sense */ |
| 1845 | unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, |
| 1846 | 0, 0, 0, 0, 0, 0, 0, 0}; |
| 1847 | |
| 1848 | memcpy(p, disconnect_pg, sizeof(disconnect_pg)); |
| 1849 | if (1 == pcontrol) |
| 1850 | memset(p + 2, 0, sizeof(disconnect_pg) - 2); |
| 1851 | return sizeof(disconnect_pg); |
| 1852 | } |
| 1853 | |
| 1854 | static int resp_format_pg(unsigned char * p, int pcontrol, int target) |
| 1855 | { /* Format device page for mode_sense */ |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1856 | unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
| 1857 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1858 | 0, 0, 0, 0, 0x40, 0, 0, 0}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1859 | |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1860 | memcpy(p, format_pg, sizeof(format_pg)); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1861 | put_unaligned_be16(sdebug_sectors_per, p + 10); |
| 1862 | put_unaligned_be16(sdebug_sector_size, p + 12); |
| 1863 | if (sdebug_removable) |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 1864 | p[20] |= 0x20; /* should agree with INQUIRY */ |
| 1865 | if (1 == pcontrol) |
| 1866 | memset(p + 2, 0, sizeof(format_pg) - 2); |
| 1867 | return sizeof(format_pg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1868 | } |
| 1869 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 1870 | static unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, |
| 1871 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, |
| 1872 | 0, 0, 0, 0}; |
| 1873 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1874 | static int resp_caching_pg(unsigned char * p, int pcontrol, int target) |
| 1875 | { /* Caching page for mode_sense */ |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1876 | unsigned char ch_caching_pg[] = {/* 0x8, 18, */ 0x4, 0, 0, 0, 0, 0, |
| 1877 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; |
| 1878 | 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] | 1879 | 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; |
| 1880 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1881 | if (SDEBUG_OPT_N_WCE & sdebug_opts) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1882 | caching_pg[2] &= ~0x4; /* set WCE=0 (default WCE=1) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1883 | memcpy(p, caching_pg, sizeof(caching_pg)); |
| 1884 | if (1 == pcontrol) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 1885 | memcpy(p + 2, ch_caching_pg, sizeof(ch_caching_pg)); |
| 1886 | else if (2 == pcontrol) |
| 1887 | memcpy(p, d_caching_pg, sizeof(d_caching_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | return sizeof(caching_pg); |
| 1889 | } |
| 1890 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 1891 | static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
| 1892 | 0, 0, 0x2, 0x4b}; |
| 1893 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1894 | static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) |
| 1895 | { /* Control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1896 | unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
| 1897 | 0, 0, 0, 0}; |
| 1898 | 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] | 1899 | 0, 0, 0x2, 0x4b}; |
| 1900 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1901 | if (sdebug_dsense) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1902 | ctrl_m_pg[2] |= 0x4; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1903 | else |
| 1904 | ctrl_m_pg[2] &= ~0x4; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1905 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1906 | if (sdebug_ato) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 1907 | ctrl_m_pg[5] |= 0x80; /* ATO=1 */ |
| 1908 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1909 | memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
| 1910 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1911 | memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
| 1912 | else if (2 == pcontrol) |
| 1913 | memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1914 | return sizeof(ctrl_m_pg); |
| 1915 | } |
| 1916 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1917 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1918 | static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
| 1919 | { /* Informational Exceptions control mode page for mode_sense */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1920 | unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
| 1921 | 0, 0, 0x0, 0x0}; |
| 1922 | unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 1923 | 0, 0, 0x0, 0x0}; |
| 1924 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1925 | memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
| 1926 | if (1 == pcontrol) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1927 | memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
| 1928 | else if (2 == pcontrol) |
| 1929 | memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1930 | return sizeof(iec_m_pg); |
| 1931 | } |
| 1932 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1933 | static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
| 1934 | { /* SAS SSP mode page - short format for mode_sense */ |
| 1935 | unsigned char sas_sf_m_pg[] = {0x19, 0x6, |
| 1936 | 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; |
| 1937 | |
| 1938 | memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); |
| 1939 | if (1 == pcontrol) |
| 1940 | memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); |
| 1941 | return sizeof(sas_sf_m_pg); |
| 1942 | } |
| 1943 | |
| 1944 | |
| 1945 | static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, |
| 1946 | int target_dev_id) |
| 1947 | { /* SAS phy control and discover mode page for mode_sense */ |
| 1948 | unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, |
| 1949 | 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1950 | 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ |
| 1951 | 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1952 | 0x2, 0, 0, 0, 0, 0, 0, 0, |
| 1953 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1954 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1955 | 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1956 | 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ |
| 1957 | 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1958 | 0x3, 0, 0, 0, 0, 0, 0, 0, |
| 1959 | 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 1960 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1961 | }; |
| 1962 | int port_a, port_b; |
| 1963 | |
Douglas Gilbert | 1b37bd6 | 2016-05-06 00:40:29 -0400 | [diff] [blame] | 1964 | put_unaligned_be64(naa3_comp_a, sas_pcd_m_pg + 16); |
| 1965 | put_unaligned_be64(naa3_comp_c + 1, sas_pcd_m_pg + 24); |
| 1966 | put_unaligned_be64(naa3_comp_a, sas_pcd_m_pg + 64); |
| 1967 | put_unaligned_be64(naa3_comp_c + 1, sas_pcd_m_pg + 72); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1968 | port_a = target_dev_id + 1; |
| 1969 | port_b = port_a + 1; |
| 1970 | memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 1971 | put_unaligned_be32(port_a, p + 20); |
| 1972 | put_unaligned_be32(port_b, p + 48 + 20); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 1973 | if (1 == pcontrol) |
| 1974 | memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); |
| 1975 | return sizeof(sas_pcd_m_pg); |
| 1976 | } |
| 1977 | |
| 1978 | static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) |
| 1979 | { /* SAS SSP shared protocol specific port mode subpage */ |
| 1980 | unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, |
| 1981 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 1982 | }; |
| 1983 | |
| 1984 | memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); |
| 1985 | if (1 == pcontrol) |
| 1986 | memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); |
| 1987 | return sizeof(sas_sha_m_pg); |
| 1988 | } |
| 1989 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | #define SDEBUG_MAX_MSENSE_SZ 256 |
| 1991 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 1992 | static int resp_mode_sense(struct scsi_cmnd *scp, |
| 1993 | struct sdebug_dev_info *devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1994 | { |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 1995 | int pcontrol, pcode, subpcode, bd_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1996 | unsigned char dev_spec; |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 1997 | int alloc_len, offset, len, target_dev_id; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 1998 | int target = scp->device->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1999 | unsigned char * ap; |
| 2000 | unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 2001 | unsigned char *cmd = scp->cmnd; |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 2002 | bool dbd, llbaa, msense_6, is_disk, bad_pcode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2003 | |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 2004 | dbd = !!(cmd[1] & 0x8); /* disable block descriptors */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2005 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 2006 | pcode = cmd[2] & 0x3f; |
| 2007 | subpcode = cmd[3]; |
| 2008 | msense_6 = (MODE_SENSE == cmd[0]); |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 2009 | llbaa = msense_6 ? false : !!(cmd[1] & 0x10); |
| 2010 | is_disk = (sdebug_ptype == TYPE_DISK); |
| 2011 | if (is_disk && !dbd) |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2012 | bd_len = llbaa ? 16 : 8; |
| 2013 | else |
| 2014 | bd_len = 0; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2015 | alloc_len = msense_6 ? cmd[4] : get_unaligned_be16(cmd + 7); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2016 | memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); |
| 2017 | if (0x3 == pcontrol) { /* Saving values not supported */ |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2018 | mk_sense_buffer(scp, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2019 | return check_condition_result; |
| 2020 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2021 | target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
| 2022 | (devip->target * 1000) - 3; |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 2023 | /* for disks set DPOFUA bit and clear write protect (WP) bit */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 2024 | if (is_disk) |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 2025 | dev_spec = 0x10; /* =0x90 if WP=1 implies read-only */ |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2026 | else |
| 2027 | dev_spec = 0x0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2028 | if (msense_6) { |
| 2029 | arr[2] = dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2030 | arr[3] = bd_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2031 | offset = 4; |
| 2032 | } else { |
| 2033 | arr[3] = dev_spec; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2034 | if (16 == bd_len) |
| 2035 | arr[4] = 0x1; /* set LONGLBA bit */ |
| 2036 | arr[7] = bd_len; /* assume 255 or less */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2037 | offset = 8; |
| 2038 | } |
| 2039 | ap = arr + offset; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 2040 | if ((bd_len > 0) && (!sdebug_capacity)) |
| 2041 | sdebug_capacity = get_sdebug_capacity(); |
| 2042 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2043 | if (8 == bd_len) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2044 | if (sdebug_capacity > 0xfffffffe) |
| 2045 | put_unaligned_be32(0xffffffff, ap + 0); |
| 2046 | else |
| 2047 | put_unaligned_be32(sdebug_capacity, ap + 0); |
| 2048 | put_unaligned_be16(sdebug_sector_size, ap + 6); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2049 | offset += bd_len; |
| 2050 | ap = arr + offset; |
| 2051 | } else if (16 == bd_len) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2052 | put_unaligned_be64((u64)sdebug_capacity, ap + 0); |
| 2053 | put_unaligned_be32(sdebug_sector_size, ap + 12); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2054 | offset += bd_len; |
| 2055 | ap = arr + offset; |
| 2056 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2057 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2058 | if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
| 2059 | /* TODO: Control Extension page */ |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2060 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2061 | return check_condition_result; |
| 2062 | } |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 2063 | bad_pcode = false; |
| 2064 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2065 | switch (pcode) { |
| 2066 | case 0x1: /* Read-Write error recovery page, direct access */ |
| 2067 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 2068 | offset += len; |
| 2069 | break; |
| 2070 | case 0x2: /* Disconnect-Reconnect page, all devices */ |
| 2071 | len = resp_disconnect_pg(ap, pcontrol, target); |
| 2072 | offset += len; |
| 2073 | break; |
| 2074 | case 0x3: /* Format device page, direct access */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 2075 | if (is_disk) { |
| 2076 | len = resp_format_pg(ap, pcontrol, target); |
| 2077 | offset += len; |
| 2078 | } else |
| 2079 | bad_pcode = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2080 | break; |
| 2081 | case 0x8: /* Caching page, direct access */ |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 2082 | if (is_disk) { |
| 2083 | len = resp_caching_pg(ap, pcontrol, target); |
| 2084 | offset += len; |
| 2085 | } else |
| 2086 | bad_pcode = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2087 | break; |
| 2088 | case 0xa: /* Control Mode page, all devices */ |
| 2089 | len = resp_ctrl_m_pg(ap, pcontrol, target); |
| 2090 | offset += len; |
| 2091 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2092 | case 0x19: /* if spc==1 then sas phy, control+discover */ |
| 2093 | if ((subpcode > 0x2) && (subpcode < 0xff)) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2094 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2095 | return check_condition_result; |
| 2096 | } |
| 2097 | len = 0; |
| 2098 | if ((0x0 == subpcode) || (0xff == subpcode)) |
| 2099 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 2100 | if ((0x1 == subpcode) || (0xff == subpcode)) |
| 2101 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, |
| 2102 | target_dev_id); |
| 2103 | if ((0x2 == subpcode) || (0xff == subpcode)) |
| 2104 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 2105 | offset += len; |
| 2106 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2107 | case 0x1c: /* Informational Exceptions Mode page, all devices */ |
| 2108 | len = resp_iec_m_pg(ap, pcontrol, target); |
| 2109 | offset += len; |
| 2110 | break; |
| 2111 | case 0x3f: /* Read all Mode pages */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2112 | if ((0 == subpcode) || (0xff == subpcode)) { |
| 2113 | len = resp_err_recov_pg(ap, pcontrol, target); |
| 2114 | len += resp_disconnect_pg(ap + len, pcontrol, target); |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 2115 | if (is_disk) { |
| 2116 | len += resp_format_pg(ap + len, pcontrol, |
| 2117 | target); |
| 2118 | len += resp_caching_pg(ap + len, pcontrol, |
| 2119 | target); |
| 2120 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2121 | len += resp_ctrl_m_pg(ap + len, pcontrol, target); |
| 2122 | len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| 2123 | if (0xff == subpcode) { |
| 2124 | len += resp_sas_pcd_m_spg(ap + len, pcontrol, |
| 2125 | target, target_dev_id); |
| 2126 | len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| 2127 | } |
| 2128 | len += resp_iec_m_pg(ap + len, pcontrol, target); |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 2129 | offset += len; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2130 | } else { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2131 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2132 | return check_condition_result; |
| 2133 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2134 | break; |
| 2135 | default: |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 2136 | bad_pcode = true; |
| 2137 | break; |
| 2138 | } |
| 2139 | if (bad_pcode) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2140 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2141 | return check_condition_result; |
| 2142 | } |
| 2143 | if (msense_6) |
| 2144 | arr[0] = offset - 1; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2145 | else |
| 2146 | put_unaligned_be16((offset - 2), arr + 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2147 | return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); |
| 2148 | } |
| 2149 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2150 | #define SDEBUG_MAX_MSELECT_SZ 512 |
| 2151 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 2152 | static int resp_mode_select(struct scsi_cmnd *scp, |
| 2153 | struct sdebug_dev_info *devip) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2154 | { |
| 2155 | int pf, sp, ps, md_len, bd_len, off, spf, pg_len; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2156 | int param_len, res, mpage; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2157 | unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 2158 | unsigned char *cmd = scp->cmnd; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2159 | int mselect6 = (MODE_SELECT == cmd[0]); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2160 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2161 | memset(arr, 0, sizeof(arr)); |
| 2162 | pf = cmd[1] & 0x10; |
| 2163 | sp = cmd[1] & 0x1; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2164 | param_len = mselect6 ? cmd[4] : get_unaligned_be16(cmd + 7); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2165 | if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2166 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, mselect6 ? 4 : 7, -1); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2167 | return check_condition_result; |
| 2168 | } |
| 2169 | res = fetch_to_dev_buffer(scp, arr, param_len); |
| 2170 | if (-1 == res) |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2171 | return DID_ERROR << 16; |
| 2172 | else if (sdebug_verbose && (res < param_len)) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2173 | sdev_printk(KERN_INFO, scp->device, |
| 2174 | "%s: cdb indicated=%d, IO sent=%d bytes\n", |
| 2175 | __func__, param_len, res); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2176 | md_len = mselect6 ? (arr[0] + 1) : (get_unaligned_be16(arr + 0) + 2); |
| 2177 | bd_len = mselect6 ? arr[3] : get_unaligned_be16(arr + 6); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2178 | if (md_len > 2) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2179 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, 0, -1); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2180 | return check_condition_result; |
| 2181 | } |
| 2182 | off = bd_len + (mselect6 ? 4 : 8); |
| 2183 | mpage = arr[off] & 0x3f; |
| 2184 | ps = !!(arr[off] & 0x80); |
| 2185 | if (ps) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2186 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 7); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2187 | return check_condition_result; |
| 2188 | } |
| 2189 | spf = !!(arr[off] & 0x40); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2190 | pg_len = spf ? (get_unaligned_be16(arr + off + 2) + 4) : |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2191 | (arr[off + 1] + 2); |
| 2192 | if ((pg_len + off) > param_len) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2193 | mk_sense_buffer(scp, ILLEGAL_REQUEST, |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2194 | PARAMETER_LIST_LENGTH_ERR, 0); |
| 2195 | return check_condition_result; |
| 2196 | } |
| 2197 | switch (mpage) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2198 | case 0x8: /* Caching Mode page */ |
| 2199 | if (caching_pg[1] == arr[off + 1]) { |
| 2200 | memcpy(caching_pg + 2, arr + off + 2, |
| 2201 | sizeof(caching_pg) - 2); |
| 2202 | goto set_mode_changed_ua; |
| 2203 | } |
| 2204 | break; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2205 | case 0xa: /* Control Mode page */ |
| 2206 | if (ctrl_m_pg[1] == arr[off + 1]) { |
| 2207 | memcpy(ctrl_m_pg + 2, arr + off + 2, |
| 2208 | sizeof(ctrl_m_pg) - 2); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2209 | sdebug_dsense = !!(ctrl_m_pg[2] & 0x4); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2210 | goto set_mode_changed_ua; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2211 | } |
| 2212 | break; |
| 2213 | case 0x1c: /* Informational Exceptions Mode page */ |
| 2214 | if (iec_m_pg[1] == arr[off + 1]) { |
| 2215 | memcpy(iec_m_pg + 2, arr + off + 2, |
| 2216 | sizeof(iec_m_pg) - 2); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2217 | goto set_mode_changed_ua; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2218 | } |
| 2219 | break; |
| 2220 | default: |
| 2221 | break; |
| 2222 | } |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2223 | mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 5); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2224 | return check_condition_result; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2225 | set_mode_changed_ua: |
| 2226 | set_bit(SDEBUG_UA_MODE_CHANGED, devip->uas_bm); |
| 2227 | return 0; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2228 | } |
| 2229 | |
| 2230 | static int resp_temp_l_pg(unsigned char * arr) |
| 2231 | { |
| 2232 | unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, |
| 2233 | 0x0, 0x1, 0x3, 0x2, 0x0, 65, |
| 2234 | }; |
| 2235 | |
| 2236 | memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); |
| 2237 | return sizeof(temp_l_pg); |
| 2238 | } |
| 2239 | |
| 2240 | static int resp_ie_l_pg(unsigned char * arr) |
| 2241 | { |
| 2242 | unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, |
| 2243 | }; |
| 2244 | |
| 2245 | memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); |
| 2246 | if (iec_m_pg[2] & 0x4) { /* TEST bit set */ |
| 2247 | arr[4] = THRESHOLD_EXCEEDED; |
| 2248 | arr[5] = 0xff; |
| 2249 | } |
| 2250 | return sizeof(ie_l_pg); |
| 2251 | } |
| 2252 | |
| 2253 | #define SDEBUG_MAX_LSENSE_SZ 512 |
| 2254 | |
| 2255 | static int resp_log_sense(struct scsi_cmnd * scp, |
| 2256 | struct sdebug_dev_info * devip) |
| 2257 | { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2258 | int ppc, sp, pcontrol, pcode, subpcode, alloc_len, len, n; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2259 | unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 2260 | unsigned char *cmd = scp->cmnd; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2261 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2262 | memset(arr, 0, sizeof(arr)); |
| 2263 | ppc = cmd[1] & 0x2; |
| 2264 | sp = cmd[1] & 0x1; |
| 2265 | if (ppc || sp) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2266 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, ppc ? 1 : 0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2267 | return check_condition_result; |
| 2268 | } |
| 2269 | pcontrol = (cmd[2] & 0xc0) >> 6; |
| 2270 | pcode = cmd[2] & 0x3f; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2271 | subpcode = cmd[3] & 0xff; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2272 | alloc_len = get_unaligned_be16(cmd + 7); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2273 | arr[0] = pcode; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2274 | if (0 == subpcode) { |
| 2275 | switch (pcode) { |
| 2276 | case 0x0: /* Supported log pages log page */ |
| 2277 | n = 4; |
| 2278 | arr[n++] = 0x0; /* this page */ |
| 2279 | arr[n++] = 0xd; /* Temperature */ |
| 2280 | arr[n++] = 0x2f; /* Informational exceptions */ |
| 2281 | arr[3] = n - 4; |
| 2282 | break; |
| 2283 | case 0xd: /* Temperature log page */ |
| 2284 | arr[3] = resp_temp_l_pg(arr + 4); |
| 2285 | break; |
| 2286 | case 0x2f: /* Informational exceptions log page */ |
| 2287 | arr[3] = resp_ie_l_pg(arr + 4); |
| 2288 | break; |
| 2289 | default: |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2290 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2291 | return check_condition_result; |
| 2292 | } |
| 2293 | } else if (0xff == subpcode) { |
| 2294 | arr[0] |= 0x40; |
| 2295 | arr[1] = subpcode; |
| 2296 | switch (pcode) { |
| 2297 | case 0x0: /* Supported log pages and subpages log page */ |
| 2298 | n = 4; |
| 2299 | arr[n++] = 0x0; |
| 2300 | arr[n++] = 0x0; /* 0,0 page */ |
| 2301 | arr[n++] = 0x0; |
| 2302 | arr[n++] = 0xff; /* this page */ |
| 2303 | arr[n++] = 0xd; |
| 2304 | arr[n++] = 0x0; /* Temperature */ |
| 2305 | arr[n++] = 0x2f; |
| 2306 | arr[n++] = 0x0; /* Informational exceptions */ |
| 2307 | arr[3] = n - 4; |
| 2308 | break; |
| 2309 | case 0xd: /* Temperature subpages */ |
| 2310 | n = 4; |
| 2311 | arr[n++] = 0xd; |
| 2312 | arr[n++] = 0x0; /* Temperature */ |
| 2313 | arr[3] = n - 4; |
| 2314 | break; |
| 2315 | case 0x2f: /* Informational exceptions subpages */ |
| 2316 | n = 4; |
| 2317 | arr[n++] = 0x2f; |
| 2318 | arr[n++] = 0x0; /* Informational exceptions */ |
| 2319 | arr[3] = n - 4; |
| 2320 | break; |
| 2321 | default: |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2322 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 2323 | return check_condition_result; |
| 2324 | } |
| 2325 | } else { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2326 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2327 | return check_condition_result; |
| 2328 | } |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2329 | len = min(get_unaligned_be16(arr + 2) + 4, alloc_len); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2330 | return fill_from_dev_buffer(scp, arr, |
| 2331 | min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
| 2332 | } |
| 2333 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2334 | static int check_device_access_params(struct scsi_cmnd *scp, |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2335 | unsigned long long lba, unsigned int num) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2337 | if (lba + num > sdebug_capacity) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2338 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2339 | return check_condition_result; |
| 2340 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2341 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 2342 | if (num > sdebug_store_sectors) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 2343 | /* needs work to find which cdb byte 'num' comes from */ |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2344 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2345 | return check_condition_result; |
| 2346 | } |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2347 | return 0; |
| 2348 | } |
| 2349 | |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2350 | /* Returns number of bytes copied or -1 if error. */ |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 2351 | static int do_device_access(struct scsi_cmnd *scmd, u64 lba, u32 num, |
| 2352 | bool do_write) |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2353 | { |
| 2354 | int ret; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2355 | u64 block, rest = 0; |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2356 | struct scsi_data_buffer *sdb; |
| 2357 | enum dma_data_direction dir; |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2358 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2359 | if (do_write) { |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2360 | sdb = scsi_out(scmd); |
| 2361 | dir = DMA_TO_DEVICE; |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2362 | } else { |
| 2363 | sdb = scsi_in(scmd); |
| 2364 | dir = DMA_FROM_DEVICE; |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2365 | } |
| 2366 | |
| 2367 | if (!sdb->length) |
| 2368 | return 0; |
| 2369 | if (!(scsi_bidi_cmnd(scmd) || scmd->sc_data_direction == dir)) |
| 2370 | return -1; |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2371 | |
| 2372 | block = do_div(lba, sdebug_store_sectors); |
| 2373 | if (block + num > sdebug_store_sectors) |
| 2374 | rest = block + num - sdebug_store_sectors; |
| 2375 | |
Dave Gordon | 386ecb1 | 2015-06-30 14:58:57 -0700 | [diff] [blame] | 2376 | ret = sg_copy_buffer(sdb->table.sgl, sdb->table.nents, |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2377 | fake_storep + (block * sdebug_sector_size), |
| 2378 | (num - rest) * sdebug_sector_size, 0, do_write); |
| 2379 | if (ret != (num - rest) * sdebug_sector_size) |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2380 | return ret; |
| 2381 | |
| 2382 | if (rest) { |
Dave Gordon | 386ecb1 | 2015-06-30 14:58:57 -0700 | [diff] [blame] | 2383 | ret += sg_copy_buffer(sdb->table.sgl, sdb->table.nents, |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2384 | fake_storep, rest * sdebug_sector_size, |
| 2385 | (num - rest) * sdebug_sector_size, do_write); |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2386 | } |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2387 | |
| 2388 | return ret; |
| 2389 | } |
| 2390 | |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 2391 | /* If fake_store(lba,num) compares equal to arr(num), then copy top half of |
| 2392 | * arr into fake_store(lba,num) and return true. If comparison fails then |
| 2393 | * return false. */ |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 2394 | static bool comp_write_worker(u64 lba, u32 num, const u8 *arr) |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 2395 | { |
| 2396 | bool res; |
| 2397 | u64 block, rest = 0; |
| 2398 | u32 store_blks = sdebug_store_sectors; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2399 | u32 lb_size = sdebug_sector_size; |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 2400 | |
| 2401 | block = do_div(lba, store_blks); |
| 2402 | if (block + num > store_blks) |
| 2403 | rest = block + num - store_blks; |
| 2404 | |
| 2405 | res = !memcmp(fake_storep + (block * lb_size), arr, |
| 2406 | (num - rest) * lb_size); |
| 2407 | if (!res) |
| 2408 | return res; |
| 2409 | if (rest) |
| 2410 | res = memcmp(fake_storep, arr + ((num - rest) * lb_size), |
| 2411 | rest * lb_size); |
| 2412 | if (!res) |
| 2413 | return res; |
| 2414 | arr += num * lb_size; |
| 2415 | memcpy(fake_storep + (block * lb_size), arr, (num - rest) * lb_size); |
| 2416 | if (rest) |
| 2417 | memcpy(fake_storep, arr + ((num - rest) * lb_size), |
| 2418 | rest * lb_size); |
| 2419 | return res; |
| 2420 | } |
| 2421 | |
Akinobu Mita | 51d648a | 2013-09-18 21:27:28 +0900 | [diff] [blame] | 2422 | static __be16 dif_compute_csum(const void *buf, int len) |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2423 | { |
Akinobu Mita | 51d648a | 2013-09-18 21:27:28 +0900 | [diff] [blame] | 2424 | __be16 csum; |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2425 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2426 | if (sdebug_guard) |
Akinobu Mita | 51d648a | 2013-09-18 21:27:28 +0900 | [diff] [blame] | 2427 | csum = (__force __be16)ip_compute_csum(buf, len); |
| 2428 | else |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2429 | csum = cpu_to_be16(crc_t10dif(buf, len)); |
Akinobu Mita | 51d648a | 2013-09-18 21:27:28 +0900 | [diff] [blame] | 2430 | |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2431 | return csum; |
| 2432 | } |
| 2433 | |
Christoph Hellwig | 6ebf105 | 2016-09-11 19:35:39 +0200 | [diff] [blame] | 2434 | static int dif_verify(struct t10_pi_tuple *sdt, const void *data, |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2435 | sector_t sector, u32 ei_lba) |
| 2436 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2437 | __be16 csum = dif_compute_csum(data, sdebug_sector_size); |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2438 | |
| 2439 | if (sdt->guard_tag != csum) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 2440 | pr_err("GUARD check failed on sector %lu rcvd 0x%04x, data 0x%04x\n", |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2441 | (unsigned long)sector, |
| 2442 | be16_to_cpu(sdt->guard_tag), |
| 2443 | be16_to_cpu(csum)); |
| 2444 | return 0x01; |
| 2445 | } |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 2446 | if (sdebug_dif == T10_PI_TYPE1_PROTECTION && |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2447 | be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 2448 | pr_err("REF check failed on sector %lu\n", |
| 2449 | (unsigned long)sector); |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2450 | return 0x03; |
| 2451 | } |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 2452 | if (sdebug_dif == T10_PI_TYPE2_PROTECTION && |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2453 | be32_to_cpu(sdt->ref_tag) != ei_lba) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 2454 | pr_err("REF check failed on sector %lu\n", |
| 2455 | (unsigned long)sector); |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2456 | return 0x03; |
| 2457 | } |
| 2458 | return 0; |
| 2459 | } |
| 2460 | |
Akinobu Mita | bb8c063 | 2013-09-18 21:27:25 +0900 | [diff] [blame] | 2461 | static void dif_copy_prot(struct scsi_cmnd *SCpnt, sector_t sector, |
Akinobu Mita | 65f72f2a | 2013-09-18 21:27:26 +0900 | [diff] [blame] | 2462 | unsigned int sectors, bool read) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2463 | { |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2464 | size_t resid; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2465 | void *paddr; |
Akinobu Mita | 14faa94 | 2013-09-18 21:27:24 +0900 | [diff] [blame] | 2466 | const void *dif_store_end = dif_storep + sdebug_store_sectors; |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2467 | struct sg_mapping_iter miter; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2468 | |
Akinobu Mita | e18d8be | 2013-06-29 17:59:18 +0900 | [diff] [blame] | 2469 | /* Bytes of protection data to copy into sgl */ |
| 2470 | resid = sectors * sizeof(*dif_storep); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2471 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2472 | sg_miter_start(&miter, scsi_prot_sglist(SCpnt), |
| 2473 | scsi_prot_sg_count(SCpnt), SG_MITER_ATOMIC | |
| 2474 | (read ? SG_MITER_TO_SG : SG_MITER_FROM_SG)); |
| 2475 | |
| 2476 | while (sg_miter_next(&miter) && resid > 0) { |
| 2477 | size_t len = min(miter.length, resid); |
Akinobu Mita | 14faa94 | 2013-09-18 21:27:24 +0900 | [diff] [blame] | 2478 | void *start = dif_store(sector); |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2479 | size_t rest = 0; |
Akinobu Mita | 14faa94 | 2013-09-18 21:27:24 +0900 | [diff] [blame] | 2480 | |
| 2481 | if (dif_store_end < start + len) |
| 2482 | rest = start + len - dif_store_end; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2483 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2484 | paddr = miter.addr; |
Akinobu Mita | 14faa94 | 2013-09-18 21:27:24 +0900 | [diff] [blame] | 2485 | |
Akinobu Mita | 65f72f2a | 2013-09-18 21:27:26 +0900 | [diff] [blame] | 2486 | if (read) |
| 2487 | memcpy(paddr, start, len - rest); |
| 2488 | else |
| 2489 | memcpy(start, paddr, len - rest); |
| 2490 | |
| 2491 | if (rest) { |
| 2492 | if (read) |
| 2493 | memcpy(paddr + len - rest, dif_storep, rest); |
| 2494 | else |
| 2495 | memcpy(dif_storep, paddr + len - rest, rest); |
| 2496 | } |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2497 | |
Akinobu Mita | e18d8be | 2013-06-29 17:59:18 +0900 | [diff] [blame] | 2498 | sector += len / sizeof(*dif_storep); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2499 | resid -= len; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2500 | } |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2501 | sg_miter_stop(&miter); |
Akinobu Mita | bb8c063 | 2013-09-18 21:27:25 +0900 | [diff] [blame] | 2502 | } |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2503 | |
Akinobu Mita | bb8c063 | 2013-09-18 21:27:25 +0900 | [diff] [blame] | 2504 | static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, |
| 2505 | unsigned int sectors, u32 ei_lba) |
| 2506 | { |
| 2507 | unsigned int i; |
Christoph Hellwig | 6ebf105 | 2016-09-11 19:35:39 +0200 | [diff] [blame] | 2508 | struct t10_pi_tuple *sdt; |
Akinobu Mita | bb8c063 | 2013-09-18 21:27:25 +0900 | [diff] [blame] | 2509 | sector_t sector; |
| 2510 | |
Akinobu Mita | c45eabec | 2014-02-26 22:56:58 +0900 | [diff] [blame] | 2511 | for (i = 0; i < sectors; i++, ei_lba++) { |
Akinobu Mita | bb8c063 | 2013-09-18 21:27:25 +0900 | [diff] [blame] | 2512 | int ret; |
| 2513 | |
| 2514 | sector = start_sec + i; |
| 2515 | sdt = dif_store(sector); |
| 2516 | |
Akinobu Mita | 51d648a | 2013-09-18 21:27:28 +0900 | [diff] [blame] | 2517 | if (sdt->app_tag == cpu_to_be16(0xffff)) |
Akinobu Mita | bb8c063 | 2013-09-18 21:27:25 +0900 | [diff] [blame] | 2518 | continue; |
| 2519 | |
| 2520 | ret = dif_verify(sdt, fake_store(sector), sector, ei_lba); |
| 2521 | if (ret) { |
| 2522 | dif_errors++; |
| 2523 | return ret; |
| 2524 | } |
Akinobu Mita | bb8c063 | 2013-09-18 21:27:25 +0900 | [diff] [blame] | 2525 | } |
| 2526 | |
Akinobu Mita | 65f72f2a | 2013-09-18 21:27:26 +0900 | [diff] [blame] | 2527 | dif_copy_prot(SCpnt, start_sec, sectors, true); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2528 | dix_reads++; |
| 2529 | |
| 2530 | return 0; |
| 2531 | } |
| 2532 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 2533 | static int resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2534 | { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2535 | u8 *cmd = scp->cmnd; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 2536 | struct sdebug_queued_cmd *sqcp; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2537 | u64 lba; |
| 2538 | u32 num; |
| 2539 | u32 ei_lba; |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2540 | unsigned long iflags; |
| 2541 | int ret; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2542 | bool check_prot; |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2543 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2544 | switch (cmd[0]) { |
| 2545 | case READ_16: |
| 2546 | ei_lba = 0; |
| 2547 | lba = get_unaligned_be64(cmd + 2); |
| 2548 | num = get_unaligned_be32(cmd + 10); |
| 2549 | check_prot = true; |
| 2550 | break; |
| 2551 | case READ_10: |
| 2552 | ei_lba = 0; |
| 2553 | lba = get_unaligned_be32(cmd + 2); |
| 2554 | num = get_unaligned_be16(cmd + 7); |
| 2555 | check_prot = true; |
| 2556 | break; |
| 2557 | case READ_6: |
| 2558 | ei_lba = 0; |
| 2559 | lba = (u32)cmd[3] | (u32)cmd[2] << 8 | |
| 2560 | (u32)(cmd[1] & 0x1f) << 16; |
| 2561 | num = (0 == cmd[4]) ? 256 : cmd[4]; |
| 2562 | check_prot = true; |
| 2563 | break; |
| 2564 | case READ_12: |
| 2565 | ei_lba = 0; |
| 2566 | lba = get_unaligned_be32(cmd + 2); |
| 2567 | num = get_unaligned_be32(cmd + 6); |
| 2568 | check_prot = true; |
| 2569 | break; |
| 2570 | case XDWRITEREAD_10: |
| 2571 | ei_lba = 0; |
| 2572 | lba = get_unaligned_be32(cmd + 2); |
| 2573 | num = get_unaligned_be16(cmd + 7); |
| 2574 | check_prot = false; |
| 2575 | break; |
| 2576 | default: /* assume READ(32) */ |
| 2577 | lba = get_unaligned_be64(cmd + 12); |
| 2578 | ei_lba = get_unaligned_be32(cmd + 20); |
| 2579 | num = get_unaligned_be32(cmd + 28); |
| 2580 | check_prot = false; |
| 2581 | break; |
| 2582 | } |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2583 | if (unlikely(have_dif_prot && check_prot)) { |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 2584 | if (sdebug_dif == T10_PI_TYPE2_PROTECTION && |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2585 | (cmd[1] & 0xe0)) { |
| 2586 | mk_sense_invalid_opcode(scp); |
| 2587 | return check_condition_result; |
| 2588 | } |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 2589 | if ((sdebug_dif == T10_PI_TYPE1_PROTECTION || |
| 2590 | sdebug_dif == T10_PI_TYPE3_PROTECTION) && |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2591 | (cmd[1] & 0xe0) == 0) |
| 2592 | sdev_printk(KERN_ERR, scp->device, "Unprotected RD " |
| 2593 | "to DIF device\n"); |
| 2594 | } |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2595 | if (unlikely(sdebug_any_injecting_opt)) { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 2596 | sqcp = (struct sdebug_queued_cmd *)scp->host_scribble; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2597 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 2598 | if (sqcp) { |
| 2599 | if (sqcp->inj_short) |
| 2600 | num /= 2; |
| 2601 | } |
| 2602 | } else |
| 2603 | sqcp = NULL; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2604 | |
| 2605 | /* inline check_device_access_params() */ |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2606 | if (unlikely(lba + num > sdebug_capacity)) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2607 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
| 2608 | return check_condition_result; |
| 2609 | } |
| 2610 | /* transfer length excessive (tie in to block limits VPD page) */ |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2611 | if (unlikely(num > sdebug_store_sectors)) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2612 | /* needs work to find which cdb byte 'num' comes from */ |
| 2613 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
| 2614 | return check_condition_result; |
| 2615 | } |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2616 | |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2617 | if (unlikely((SDEBUG_OPT_MEDIUM_ERR & sdebug_opts) && |
| 2618 | (lba <= (OPT_MEDIUM_ERR_ADDR + OPT_MEDIUM_ERR_NUM - 1)) && |
| 2619 | ((lba + num) > OPT_MEDIUM_ERR_ADDR))) { |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2620 | /* claim unrecoverable read error */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2621 | mk_sense_buffer(scp, MEDIUM_ERROR, UNRECOVERED_READ_ERR, 0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2622 | /* set info field and valid bit for fixed descriptor */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2623 | if (0x70 == (scp->sense_buffer[0] & 0x7f)) { |
| 2624 | scp->sense_buffer[0] |= 0x80; /* Valid bit */ |
Douglas Gilbert | 32f7ef7 | 2011-03-11 10:43:35 -0500 | [diff] [blame] | 2625 | ret = (lba < OPT_MEDIUM_ERR_ADDR) |
| 2626 | ? OPT_MEDIUM_ERR_ADDR : (int)lba; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2627 | put_unaligned_be32(ret, scp->sense_buffer + 3); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 2628 | } |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2629 | scsi_set_resid(scp, scsi_bufflen(scp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2630 | return check_condition_result; |
| 2631 | } |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2632 | |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 2633 | read_lock_irqsave(&atomic_rw, iflags); |
| 2634 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2635 | /* DIX + T10 DIF */ |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2636 | if (unlikely(sdebug_dix && scsi_prot_sg_count(scp))) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2637 | int prot_ret = prot_verify_read(scp, lba, num, ei_lba); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2638 | |
| 2639 | if (prot_ret) { |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 2640 | read_unlock_irqrestore(&atomic_rw, iflags); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2641 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, prot_ret); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2642 | return illegal_condition_result; |
| 2643 | } |
| 2644 | } |
| 2645 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2646 | ret = do_device_access(scp, lba, num, false); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2647 | read_unlock_irqrestore(&atomic_rw, iflags); |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2648 | if (unlikely(ret == -1)) |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2649 | return DID_ERROR << 16; |
| 2650 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2651 | scsi_in(scp)->resid = scsi_bufflen(scp) - ret; |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2652 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 2653 | if (unlikely(sqcp)) { |
| 2654 | if (sqcp->inj_recovered) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2655 | mk_sense_buffer(scp, RECOVERED_ERROR, |
| 2656 | THRESHOLD_EXCEEDED, 0); |
| 2657 | return check_condition_result; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 2658 | } else if (sqcp->inj_transport) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2659 | mk_sense_buffer(scp, ABORTED_COMMAND, |
| 2660 | TRANSPORT_PROBLEM, ACK_NAK_TO); |
| 2661 | return check_condition_result; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 2662 | } else if (sqcp->inj_dif) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2663 | /* Logical block guard check failed */ |
| 2664 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); |
| 2665 | return illegal_condition_result; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 2666 | } else if (sqcp->inj_dix) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2667 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); |
| 2668 | return illegal_condition_result; |
| 2669 | } |
| 2670 | } |
Akinobu Mita | a451751 | 2013-07-08 16:01:57 -0700 | [diff] [blame] | 2671 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2672 | } |
| 2673 | |
Tomas Winkler | 58a8635 | 2015-07-28 16:54:23 +0300 | [diff] [blame] | 2674 | static void dump_sector(unsigned char *buf, int len) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2675 | { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2676 | int i, j, n; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2677 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2678 | pr_err(">>> Sector Dump <<<\n"); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2679 | for (i = 0 ; i < len ; i += 16) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2680 | char b[128]; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2681 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2682 | for (j = 0, n = 0; j < 16; j++) { |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2683 | unsigned char c = buf[i+j]; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2684 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2685 | if (c >= 0x20 && c < 0x7e) |
| 2686 | n += scnprintf(b + n, sizeof(b) - n, |
| 2687 | " %c ", buf[i+j]); |
| 2688 | else |
| 2689 | n += scnprintf(b + n, sizeof(b) - n, |
| 2690 | "%02x ", buf[i+j]); |
| 2691 | } |
| 2692 | pr_err("%04d: %s\n", i, b); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2693 | } |
| 2694 | } |
| 2695 | |
| 2696 | 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] | 2697 | unsigned int sectors, u32 ei_lba) |
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 | int ret; |
Christoph Hellwig | 6ebf105 | 2016-09-11 19:35:39 +0200 | [diff] [blame] | 2700 | struct t10_pi_tuple *sdt; |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2701 | void *daddr; |
Akinobu Mita | 65f72f2a | 2013-09-18 21:27:26 +0900 | [diff] [blame] | 2702 | sector_t sector = start_sec; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2703 | int ppage_offset; |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2704 | int dpage_offset; |
| 2705 | struct sg_mapping_iter diter; |
| 2706 | struct sg_mapping_iter piter; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2707 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2708 | BUG_ON(scsi_sg_count(SCpnt) == 0); |
| 2709 | BUG_ON(scsi_prot_sg_count(SCpnt) == 0); |
| 2710 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2711 | sg_miter_start(&piter, scsi_prot_sglist(SCpnt), |
| 2712 | scsi_prot_sg_count(SCpnt), |
| 2713 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); |
| 2714 | sg_miter_start(&diter, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), |
| 2715 | SG_MITER_ATOMIC | SG_MITER_FROM_SG); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2716 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2717 | /* For each protection page */ |
| 2718 | while (sg_miter_next(&piter)) { |
| 2719 | dpage_offset = 0; |
| 2720 | if (WARN_ON(!sg_miter_next(&diter))) { |
| 2721 | ret = 0x01; |
| 2722 | goto out; |
| 2723 | } |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2724 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2725 | for (ppage_offset = 0; ppage_offset < piter.length; |
Christoph Hellwig | 6ebf105 | 2016-09-11 19:35:39 +0200 | [diff] [blame] | 2726 | ppage_offset += sizeof(struct t10_pi_tuple)) { |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2727 | /* If we're at the end of the current |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2728 | * data page advance to the next one |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2729 | */ |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2730 | if (dpage_offset >= diter.length) { |
| 2731 | if (WARN_ON(!sg_miter_next(&diter))) { |
| 2732 | ret = 0x01; |
| 2733 | goto out; |
| 2734 | } |
| 2735 | dpage_offset = 0; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2736 | } |
| 2737 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2738 | sdt = piter.addr + ppage_offset; |
| 2739 | daddr = diter.addr + dpage_offset; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2740 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2741 | ret = dif_verify(sdt, daddr, sector, ei_lba); |
Akinobu Mita | beb40ea | 2013-06-29 17:59:19 +0900 | [diff] [blame] | 2742 | if (ret) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2743 | dump_sector(daddr, sdebug_sector_size); |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 2744 | goto out; |
| 2745 | } |
| 2746 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2747 | sector++; |
Martin K. Petersen | 395cef0 | 2009-09-18 17:33:03 -0400 | [diff] [blame] | 2748 | ei_lba++; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2749 | dpage_offset += sdebug_sector_size; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2750 | } |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2751 | diter.consumed = dpage_offset; |
| 2752 | sg_miter_stop(&diter); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2753 | } |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2754 | sg_miter_stop(&piter); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2755 | |
Akinobu Mita | 65f72f2a | 2013-09-18 21:27:26 +0900 | [diff] [blame] | 2756 | dif_copy_prot(SCpnt, start_sec, sectors, false); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2757 | dix_writes++; |
| 2758 | |
| 2759 | return 0; |
| 2760 | |
| 2761 | out: |
| 2762 | dif_errors++; |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 2763 | sg_miter_stop(&diter); |
| 2764 | sg_miter_stop(&piter); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2765 | return ret; |
| 2766 | } |
| 2767 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2768 | static unsigned long lba_to_map_index(sector_t lba) |
| 2769 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2770 | if (sdebug_unmap_alignment) |
| 2771 | lba += sdebug_unmap_granularity - sdebug_unmap_alignment; |
| 2772 | sector_div(lba, sdebug_unmap_granularity); |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2773 | return lba; |
| 2774 | } |
| 2775 | |
| 2776 | static sector_t map_index_to_lba(unsigned long index) |
| 2777 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2778 | sector_t lba = index * sdebug_unmap_granularity; |
Akinobu Mita | a027b5b | 2013-08-26 22:08:41 +0900 | [diff] [blame] | 2779 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2780 | if (sdebug_unmap_alignment) |
| 2781 | lba -= sdebug_unmap_granularity - sdebug_unmap_alignment; |
Akinobu Mita | a027b5b | 2013-08-26 22:08:41 +0900 | [diff] [blame] | 2782 | return lba; |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2783 | } |
| 2784 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2785 | static unsigned int map_state(sector_t lba, unsigned int *num) |
| 2786 | { |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2787 | sector_t end; |
| 2788 | unsigned int mapped; |
| 2789 | unsigned long index; |
| 2790 | unsigned long next; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2791 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2792 | index = lba_to_map_index(lba); |
| 2793 | mapped = test_bit(index, map_storep); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2794 | |
| 2795 | if (mapped) |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2796 | next = find_next_zero_bit(map_storep, map_size, index); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2797 | else |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2798 | next = find_next_bit(map_storep, map_size, index); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2799 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2800 | 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] | 2801 | *num = end - lba; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2802 | return mapped; |
| 2803 | } |
| 2804 | |
| 2805 | static void map_region(sector_t lba, unsigned int len) |
| 2806 | { |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2807 | sector_t end = lba + len; |
| 2808 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2809 | while (lba < end) { |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2810 | unsigned long index = lba_to_map_index(lba); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2811 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2812 | if (index < map_size) |
| 2813 | set_bit(index, map_storep); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2814 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2815 | lba = map_index_to_lba(index + 1); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2816 | } |
| 2817 | } |
| 2818 | |
| 2819 | static void unmap_region(sector_t lba, unsigned int len) |
| 2820 | { |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2821 | sector_t end = lba + len; |
| 2822 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2823 | while (lba < end) { |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2824 | unsigned long index = lba_to_map_index(lba); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2825 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2826 | if (lba == map_index_to_lba(index) && |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2827 | lba + sdebug_unmap_granularity <= end && |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2828 | index < map_size) { |
| 2829 | clear_bit(index, map_storep); |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 2830 | if (sdebug_lbprz) { /* for LBPRZ=2 return 0xff_s */ |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 2831 | memset(fake_storep + |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 2832 | lba * sdebug_sector_size, |
| 2833 | (sdebug_lbprz & 1) ? 0 : 0xff, |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2834 | sdebug_sector_size * |
| 2835 | sdebug_unmap_granularity); |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2836 | } |
Akinobu Mita | e9926b4 | 2013-06-29 17:59:17 +0900 | [diff] [blame] | 2837 | if (dif_storep) { |
| 2838 | memset(dif_storep + lba, 0xff, |
| 2839 | sizeof(*dif_storep) * |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2840 | sdebug_unmap_granularity); |
Akinobu Mita | e9926b4 | 2013-06-29 17:59:17 +0900 | [diff] [blame] | 2841 | } |
Eric Sandeen | be1dd78 | 2012-03-08 00:03:59 -0600 | [diff] [blame] | 2842 | } |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 2843 | lba = map_index_to_lba(index + 1); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2844 | } |
| 2845 | } |
| 2846 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 2847 | static int resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2848 | { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2849 | u8 *cmd = scp->cmnd; |
| 2850 | u64 lba; |
| 2851 | u32 num; |
| 2852 | u32 ei_lba; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2853 | unsigned long iflags; |
FUJITA Tomonori | 1978910 | 2008-03-30 00:59:56 +0900 | [diff] [blame] | 2854 | int ret; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2855 | bool check_prot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2856 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2857 | switch (cmd[0]) { |
| 2858 | case WRITE_16: |
| 2859 | ei_lba = 0; |
| 2860 | lba = get_unaligned_be64(cmd + 2); |
| 2861 | num = get_unaligned_be32(cmd + 10); |
| 2862 | check_prot = true; |
| 2863 | break; |
| 2864 | case WRITE_10: |
| 2865 | ei_lba = 0; |
| 2866 | lba = get_unaligned_be32(cmd + 2); |
| 2867 | num = get_unaligned_be16(cmd + 7); |
| 2868 | check_prot = true; |
| 2869 | break; |
| 2870 | case WRITE_6: |
| 2871 | ei_lba = 0; |
| 2872 | lba = (u32)cmd[3] | (u32)cmd[2] << 8 | |
| 2873 | (u32)(cmd[1] & 0x1f) << 16; |
| 2874 | num = (0 == cmd[4]) ? 256 : cmd[4]; |
| 2875 | check_prot = true; |
| 2876 | break; |
| 2877 | case WRITE_12: |
| 2878 | ei_lba = 0; |
| 2879 | lba = get_unaligned_be32(cmd + 2); |
| 2880 | num = get_unaligned_be32(cmd + 6); |
| 2881 | check_prot = true; |
| 2882 | break; |
| 2883 | case 0x53: /* XDWRITEREAD(10) */ |
| 2884 | ei_lba = 0; |
| 2885 | lba = get_unaligned_be32(cmd + 2); |
| 2886 | num = get_unaligned_be16(cmd + 7); |
| 2887 | check_prot = false; |
| 2888 | break; |
| 2889 | default: /* assume WRITE(32) */ |
| 2890 | lba = get_unaligned_be64(cmd + 12); |
| 2891 | ei_lba = get_unaligned_be32(cmd + 20); |
| 2892 | num = get_unaligned_be32(cmd + 28); |
| 2893 | check_prot = false; |
| 2894 | break; |
| 2895 | } |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2896 | if (unlikely(have_dif_prot && check_prot)) { |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 2897 | if (sdebug_dif == T10_PI_TYPE2_PROTECTION && |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2898 | (cmd[1] & 0xe0)) { |
| 2899 | mk_sense_invalid_opcode(scp); |
| 2900 | return check_condition_result; |
| 2901 | } |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 2902 | if ((sdebug_dif == T10_PI_TYPE1_PROTECTION || |
| 2903 | sdebug_dif == T10_PI_TYPE3_PROTECTION) && |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2904 | (cmd[1] & 0xe0) == 0) |
| 2905 | sdev_printk(KERN_ERR, scp->device, "Unprotected WR " |
| 2906 | "to DIF device\n"); |
| 2907 | } |
| 2908 | |
| 2909 | /* inline check_device_access_params() */ |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2910 | if (unlikely(lba + num > sdebug_capacity)) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2911 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
| 2912 | return check_condition_result; |
| 2913 | } |
| 2914 | /* transfer length excessive (tie in to block limits VPD page) */ |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2915 | if (unlikely(num > sdebug_store_sectors)) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2916 | /* needs work to find which cdb byte 'num' comes from */ |
| 2917 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
| 2918 | return check_condition_result; |
| 2919 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2920 | |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 2921 | write_lock_irqsave(&atomic_rw, iflags); |
| 2922 | |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2923 | /* DIX + T10 DIF */ |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2924 | if (unlikely(sdebug_dix && scsi_prot_sg_count(scp))) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2925 | int prot_ret = prot_verify_write(scp, lba, num, ei_lba); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2926 | |
| 2927 | if (prot_ret) { |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 2928 | write_unlock_irqrestore(&atomic_rw, iflags); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2929 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, prot_ret); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 2930 | return illegal_condition_result; |
| 2931 | } |
| 2932 | } |
| 2933 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2934 | ret = do_device_access(scp, lba, num, true); |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2935 | if (unlikely(scsi_debug_lbp())) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2936 | map_region(lba, num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2937 | write_unlock_irqrestore(&atomic_rw, iflags); |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2938 | if (unlikely(-1 == ret)) |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2939 | return DID_ERROR << 16; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 2940 | else if (unlikely(sdebug_verbose && |
| 2941 | (ret < (num * sdebug_sector_size)))) |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2942 | sdev_printk(KERN_INFO, scp->device, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 2943 | "%s: write: cdb indicated=%u, IO sent=%d bytes\n", |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2944 | my_name, num * sdebug_sector_size, ret); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2945 | |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 2946 | if (unlikely(sdebug_any_injecting_opt)) { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 2947 | struct sdebug_queued_cmd *sqcp = |
| 2948 | (struct sdebug_queued_cmd *)scp->host_scribble; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2949 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 2950 | if (sqcp) { |
| 2951 | if (sqcp->inj_recovered) { |
| 2952 | mk_sense_buffer(scp, RECOVERED_ERROR, |
| 2953 | THRESHOLD_EXCEEDED, 0); |
| 2954 | return check_condition_result; |
| 2955 | } else if (sqcp->inj_dif) { |
| 2956 | /* Logical block guard check failed */ |
| 2957 | mk_sense_buffer(scp, ABORTED_COMMAND, 0x10, 1); |
| 2958 | return illegal_condition_result; |
| 2959 | } else if (sqcp->inj_dix) { |
| 2960 | mk_sense_buffer(scp, ILLEGAL_REQUEST, 0x10, 1); |
| 2961 | return illegal_condition_result; |
| 2962 | } |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2963 | } |
| 2964 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2965 | return 0; |
| 2966 | } |
| 2967 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 2968 | static int resp_write_same(struct scsi_cmnd *scp, u64 lba, u32 num, |
| 2969 | u32 ei_lba, bool unmap, bool ndob) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2970 | { |
| 2971 | unsigned long iflags; |
| 2972 | unsigned long long i; |
| 2973 | int ret; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2974 | u64 lba_off; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2975 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2976 | ret = check_device_access_params(scp, lba, num); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2977 | if (ret) |
| 2978 | return ret; |
| 2979 | |
| 2980 | write_lock_irqsave(&atomic_rw, iflags); |
| 2981 | |
Akinobu Mita | 9ed8d3d | 2013-04-16 22:11:55 +0900 | [diff] [blame] | 2982 | if (unmap && scsi_debug_lbp()) { |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2983 | unmap_region(lba, num); |
| 2984 | goto out; |
| 2985 | } |
| 2986 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2987 | lba_off = lba * sdebug_sector_size; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2988 | /* if ndob then zero 1 logical block, else fetch 1 logical block */ |
| 2989 | if (ndob) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2990 | memset(fake_storep + lba_off, 0, sdebug_sector_size); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 2991 | ret = 0; |
| 2992 | } else |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2993 | ret = fetch_to_dev_buffer(scp, fake_storep + lba_off, |
| 2994 | sdebug_sector_size); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 2995 | |
| 2996 | if (-1 == ret) { |
| 2997 | write_unlock_irqrestore(&atomic_rw, iflags); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 2998 | return DID_ERROR << 16; |
| 2999 | } else if (sdebug_verbose && (ret < (num * sdebug_sector_size))) |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3000 | sdev_printk(KERN_INFO, scp->device, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3001 | "%s: %s: cdb indicated=%u, IO sent=%d bytes\n", |
| 3002 | my_name, "write same", |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3003 | num * sdebug_sector_size, ret); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3004 | |
| 3005 | /* Copy first sector to remaining blocks */ |
| 3006 | for (i = 1 ; i < num ; i++) |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3007 | memcpy(fake_storep + ((lba + i) * sdebug_sector_size), |
| 3008 | fake_storep + lba_off, |
| 3009 | sdebug_sector_size); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3010 | |
Akinobu Mita | 9ed8d3d | 2013-04-16 22:11:55 +0900 | [diff] [blame] | 3011 | if (scsi_debug_lbp()) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3012 | map_region(lba, num); |
| 3013 | out: |
| 3014 | write_unlock_irqrestore(&atomic_rw, iflags); |
| 3015 | |
| 3016 | return 0; |
| 3017 | } |
| 3018 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 3019 | static int resp_write_same_10(struct scsi_cmnd *scp, |
| 3020 | struct sdebug_dev_info *devip) |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3021 | { |
| 3022 | u8 *cmd = scp->cmnd; |
| 3023 | u32 lba; |
| 3024 | u16 num; |
| 3025 | u32 ei_lba = 0; |
| 3026 | bool unmap = false; |
| 3027 | |
| 3028 | if (cmd[1] & 0x8) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3029 | if (sdebug_lbpws10 == 0) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3030 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 3); |
| 3031 | return check_condition_result; |
| 3032 | } else |
| 3033 | unmap = true; |
| 3034 | } |
| 3035 | lba = get_unaligned_be32(cmd + 2); |
| 3036 | num = get_unaligned_be16(cmd + 7); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3037 | if (num > sdebug_write_same_length) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3038 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 7, -1); |
| 3039 | return check_condition_result; |
| 3040 | } |
| 3041 | return resp_write_same(scp, lba, num, ei_lba, unmap, false); |
| 3042 | } |
| 3043 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 3044 | static int resp_write_same_16(struct scsi_cmnd *scp, |
| 3045 | struct sdebug_dev_info *devip) |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3046 | { |
| 3047 | u8 *cmd = scp->cmnd; |
| 3048 | u64 lba; |
| 3049 | u32 num; |
| 3050 | u32 ei_lba = 0; |
| 3051 | bool unmap = false; |
| 3052 | bool ndob = false; |
| 3053 | |
| 3054 | if (cmd[1] & 0x8) { /* UNMAP */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3055 | if (sdebug_lbpws == 0) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3056 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 3); |
| 3057 | return check_condition_result; |
| 3058 | } else |
| 3059 | unmap = true; |
| 3060 | } |
| 3061 | if (cmd[1] & 0x1) /* NDOB (no data-out buffer, assumes zeroes) */ |
| 3062 | ndob = true; |
| 3063 | lba = get_unaligned_be64(cmd + 2); |
| 3064 | num = get_unaligned_be32(cmd + 10); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3065 | if (num > sdebug_write_same_length) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3066 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 10, -1); |
| 3067 | return check_condition_result; |
| 3068 | } |
| 3069 | return resp_write_same(scp, lba, num, ei_lba, unmap, ndob); |
| 3070 | } |
| 3071 | |
Ewan D. Milne | acafd0b | 2014-12-04 11:49:28 -0500 | [diff] [blame] | 3072 | /* Note the mode field is in the same position as the (lower) service action |
| 3073 | * field. For the Report supported operation codes command, SPC-4 suggests |
| 3074 | * each mode of this command should be reported separately; for future. */ |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 3075 | static int resp_write_buffer(struct scsi_cmnd *scp, |
| 3076 | struct sdebug_dev_info *devip) |
Ewan D. Milne | acafd0b | 2014-12-04 11:49:28 -0500 | [diff] [blame] | 3077 | { |
| 3078 | u8 *cmd = scp->cmnd; |
| 3079 | struct scsi_device *sdp = scp->device; |
| 3080 | struct sdebug_dev_info *dp; |
| 3081 | u8 mode; |
| 3082 | |
| 3083 | mode = cmd[1] & 0x1f; |
| 3084 | switch (mode) { |
| 3085 | case 0x4: /* download microcode (MC) and activate (ACT) */ |
| 3086 | /* set UAs on this device only */ |
| 3087 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); |
| 3088 | set_bit(SDEBUG_UA_MICROCODE_CHANGED, devip->uas_bm); |
| 3089 | break; |
| 3090 | case 0x5: /* download MC, save and ACT */ |
| 3091 | set_bit(SDEBUG_UA_MICROCODE_CHANGED_WO_RESET, devip->uas_bm); |
| 3092 | break; |
| 3093 | case 0x6: /* download MC with offsets and ACT */ |
| 3094 | /* set UAs on most devices (LUs) in this target */ |
| 3095 | list_for_each_entry(dp, |
| 3096 | &devip->sdbg_host->dev_info_list, |
| 3097 | dev_list) |
| 3098 | if (dp->target == sdp->id) { |
| 3099 | set_bit(SDEBUG_UA_BUS_RESET, dp->uas_bm); |
| 3100 | if (devip != dp) |
| 3101 | set_bit(SDEBUG_UA_MICROCODE_CHANGED, |
| 3102 | dp->uas_bm); |
| 3103 | } |
| 3104 | break; |
| 3105 | case 0x7: /* download MC with offsets, save, and ACT */ |
| 3106 | /* set UA on all devices (LUs) in this target */ |
| 3107 | list_for_each_entry(dp, |
| 3108 | &devip->sdbg_host->dev_info_list, |
| 3109 | dev_list) |
| 3110 | if (dp->target == sdp->id) |
| 3111 | set_bit(SDEBUG_UA_MICROCODE_CHANGED_WO_RESET, |
| 3112 | dp->uas_bm); |
| 3113 | break; |
| 3114 | default: |
| 3115 | /* do nothing for this command for other mode values */ |
| 3116 | break; |
| 3117 | } |
| 3118 | return 0; |
| 3119 | } |
| 3120 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 3121 | static int resp_comp_write(struct scsi_cmnd *scp, |
| 3122 | struct sdebug_dev_info *devip) |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3123 | { |
| 3124 | u8 *cmd = scp->cmnd; |
| 3125 | u8 *arr; |
| 3126 | u8 *fake_storep_hold; |
| 3127 | u64 lba; |
| 3128 | u32 dnum; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3129 | u32 lb_size = sdebug_sector_size; |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3130 | u8 num; |
| 3131 | unsigned long iflags; |
| 3132 | int ret; |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3133 | int retval = 0; |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3134 | |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3135 | lba = get_unaligned_be64(cmd + 2); |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3136 | num = cmd[13]; /* 1 to a maximum of 255 logical blocks */ |
| 3137 | if (0 == num) |
| 3138 | return 0; /* degenerate case, not an error */ |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 3139 | if (sdebug_dif == T10_PI_TYPE2_PROTECTION && |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3140 | (cmd[1] & 0xe0)) { |
| 3141 | mk_sense_invalid_opcode(scp); |
| 3142 | return check_condition_result; |
| 3143 | } |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 3144 | if ((sdebug_dif == T10_PI_TYPE1_PROTECTION || |
| 3145 | sdebug_dif == T10_PI_TYPE3_PROTECTION) && |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3146 | (cmd[1] & 0xe0) == 0) |
| 3147 | sdev_printk(KERN_ERR, scp->device, "Unprotected WR " |
| 3148 | "to DIF device\n"); |
| 3149 | |
| 3150 | /* inline check_device_access_params() */ |
| 3151 | if (lba + num > sdebug_capacity) { |
| 3152 | mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
| 3153 | return check_condition_result; |
| 3154 | } |
| 3155 | /* transfer length excessive (tie in to block limits VPD page) */ |
| 3156 | if (num > sdebug_store_sectors) { |
| 3157 | /* needs work to find which cdb byte 'num' comes from */ |
| 3158 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
| 3159 | return check_condition_result; |
| 3160 | } |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3161 | dnum = 2 * num; |
| 3162 | arr = kzalloc(dnum * lb_size, GFP_ATOMIC); |
| 3163 | if (NULL == arr) { |
| 3164 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, |
| 3165 | INSUFF_RES_ASCQ); |
| 3166 | return check_condition_result; |
| 3167 | } |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3168 | |
| 3169 | write_lock_irqsave(&atomic_rw, iflags); |
| 3170 | |
| 3171 | /* trick do_device_access() to fetch both compare and write buffers |
| 3172 | * from data-in into arr. Safe (atomic) since write_lock held. */ |
| 3173 | fake_storep_hold = fake_storep; |
| 3174 | fake_storep = arr; |
| 3175 | ret = do_device_access(scp, 0, dnum, true); |
| 3176 | fake_storep = fake_storep_hold; |
| 3177 | if (ret == -1) { |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3178 | retval = DID_ERROR << 16; |
| 3179 | goto cleanup; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3180 | } else if (sdebug_verbose && (ret < (dnum * lb_size))) |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3181 | sdev_printk(KERN_INFO, scp->device, "%s: compare_write: cdb " |
| 3182 | "indicated=%u, IO sent=%d bytes\n", my_name, |
| 3183 | dnum * lb_size, ret); |
| 3184 | if (!comp_write_worker(lba, num, arr)) { |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3185 | mk_sense_buffer(scp, MISCOMPARE, MISCOMPARE_VERIFY_ASC, 0); |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3186 | retval = check_condition_result; |
| 3187 | goto cleanup; |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3188 | } |
| 3189 | if (scsi_debug_lbp()) |
| 3190 | map_region(lba, num); |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3191 | cleanup: |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3192 | write_unlock_irqrestore(&atomic_rw, iflags); |
Douglas Gilbert | d467d31 | 2014-11-26 12:33:48 -0500 | [diff] [blame] | 3193 | kfree(arr); |
| 3194 | return retval; |
Douglas Gilbert | 38d5c83 | 2014-11-24 21:27:12 -0500 | [diff] [blame] | 3195 | } |
| 3196 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3197 | struct unmap_block_desc { |
| 3198 | __be64 lba; |
| 3199 | __be32 blocks; |
| 3200 | __be32 __reserved; |
| 3201 | }; |
| 3202 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 3203 | static int resp_unmap(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3204 | { |
| 3205 | unsigned char *buf; |
| 3206 | struct unmap_block_desc *desc; |
| 3207 | unsigned int i, payload_len, descriptors; |
| 3208 | int ret; |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 3209 | unsigned long iflags; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3210 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3211 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3212 | if (!scsi_debug_lbp()) |
| 3213 | return 0; /* fib and say its done */ |
| 3214 | payload_len = get_unaligned_be16(scp->cmnd + 7); |
| 3215 | BUG_ON(scsi_bufflen(scp) != payload_len); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3216 | |
| 3217 | descriptors = (payload_len - 8) / 16; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3218 | if (descriptors > sdebug_unmap_max_desc) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3219 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 7, -1); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3220 | return check_condition_result; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3221 | } |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3222 | |
Douglas Gilbert | b333a81 | 2016-04-25 12:16:30 -0400 | [diff] [blame] | 3223 | buf = kzalloc(scsi_bufflen(scp), GFP_ATOMIC); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3224 | if (!buf) { |
| 3225 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, |
| 3226 | INSUFF_RES_ASCQ); |
| 3227 | return check_condition_result; |
| 3228 | } |
| 3229 | |
| 3230 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3231 | |
| 3232 | BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2); |
| 3233 | BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16); |
| 3234 | |
| 3235 | desc = (void *)&buf[8]; |
| 3236 | |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 3237 | write_lock_irqsave(&atomic_rw, iflags); |
| 3238 | |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3239 | for (i = 0 ; i < descriptors ; i++) { |
| 3240 | unsigned long long lba = get_unaligned_be64(&desc[i].lba); |
| 3241 | unsigned int num = get_unaligned_be32(&desc[i].blocks); |
| 3242 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3243 | ret = check_device_access_params(scp, lba, num); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3244 | if (ret) |
| 3245 | goto out; |
| 3246 | |
| 3247 | unmap_region(lba, num); |
| 3248 | } |
| 3249 | |
| 3250 | ret = 0; |
| 3251 | |
| 3252 | out: |
Akinobu Mita | 6c78cc0 | 2014-02-26 22:57:03 +0900 | [diff] [blame] | 3253 | write_unlock_irqrestore(&atomic_rw, iflags); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3254 | kfree(buf); |
| 3255 | |
| 3256 | return ret; |
| 3257 | } |
| 3258 | |
| 3259 | #define SDEBUG_GET_LBA_STATUS_LEN 32 |
| 3260 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 3261 | static int resp_get_lba_status(struct scsi_cmnd *scp, |
| 3262 | struct sdebug_dev_info *devip) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3263 | { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3264 | u8 *cmd = scp->cmnd; |
| 3265 | u64 lba; |
| 3266 | u32 alloc_len, mapped, num; |
| 3267 | u8 arr[SDEBUG_GET_LBA_STATUS_LEN]; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3268 | int ret; |
| 3269 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3270 | lba = get_unaligned_be64(cmd + 2); |
| 3271 | alloc_len = get_unaligned_be32(cmd + 10); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3272 | |
| 3273 | if (alloc_len < 24) |
| 3274 | return 0; |
| 3275 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3276 | ret = check_device_access_params(scp, lba, 1); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3277 | if (ret) |
| 3278 | return ret; |
| 3279 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3280 | if (scsi_debug_lbp()) |
| 3281 | mapped = map_state(lba, &num); |
| 3282 | else { |
| 3283 | mapped = 1; |
| 3284 | /* following just in case virtual_gb changed */ |
| 3285 | sdebug_capacity = get_sdebug_capacity(); |
| 3286 | if (sdebug_capacity - lba <= 0xffffffff) |
| 3287 | num = sdebug_capacity - lba; |
| 3288 | else |
| 3289 | num = 0xffffffff; |
| 3290 | } |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3291 | |
| 3292 | memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3293 | put_unaligned_be32(20, arr); /* Parameter Data Length */ |
| 3294 | put_unaligned_be64(lba, arr + 8); /* LBA */ |
| 3295 | put_unaligned_be32(num, arr + 16); /* Number of blocks */ |
| 3296 | arr[20] = !mapped; /* prov_stat=0: mapped; 1: dealloc */ |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 3297 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3298 | 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] | 3299 | } |
| 3300 | |
Douglas Gilbert | fb0cc8d | 2016-05-31 17:15:07 -0400 | [diff] [blame] | 3301 | #define RL_BUCKET_ELEMS 8 |
| 3302 | |
Douglas Gilbert | 8d039e2 | 2016-04-30 22:44:43 -0400 | [diff] [blame] | 3303 | /* Even though each pseudo target has a REPORT LUNS "well known logical unit" |
| 3304 | * (W-LUN), the normal Linux scanning logic does not associate it with a |
| 3305 | * device (e.g. /dev/sg7). The following magic will make that association: |
| 3306 | * "cd /sys/class/scsi_host/host<n> ; echo '- - 49409' > scan" |
| 3307 | * where <n> is a host number. If there are multiple targets in a host then |
| 3308 | * the above will associate a W-LUN to each target. To only get a W-LUN |
| 3309 | * for target 2, then use "echo '- 2 49409' > scan" . |
| 3310 | */ |
| 3311 | static int resp_report_luns(struct scsi_cmnd *scp, |
| 3312 | struct sdebug_dev_info *devip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3313 | { |
Douglas Gilbert | 01123ef | 2014-08-05 12:20:02 +0200 | [diff] [blame] | 3314 | unsigned char *cmd = scp->cmnd; |
Douglas Gilbert | 8d039e2 | 2016-04-30 22:44:43 -0400 | [diff] [blame] | 3315 | unsigned int alloc_len; |
| 3316 | unsigned char select_report; |
| 3317 | u64 lun; |
| 3318 | struct scsi_lun *lun_p; |
Douglas Gilbert | fb0cc8d | 2016-05-31 17:15:07 -0400 | [diff] [blame] | 3319 | u8 arr[RL_BUCKET_ELEMS * sizeof(struct scsi_lun)]; |
Douglas Gilbert | 8d039e2 | 2016-04-30 22:44:43 -0400 | [diff] [blame] | 3320 | unsigned int lun_cnt; /* normal LUN count (max: 256) */ |
| 3321 | unsigned int wlun_cnt; /* report luns W-LUN count */ |
| 3322 | unsigned int tlun_cnt; /* total LUN count */ |
| 3323 | unsigned int rlen; /* response length (in bytes) */ |
Douglas Gilbert | fb0cc8d | 2016-05-31 17:15:07 -0400 | [diff] [blame] | 3324 | int k, j, n, res; |
| 3325 | unsigned int off_rsp = 0; |
| 3326 | const int sz_lun = sizeof(struct scsi_lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3327 | |
Ewan D. Milne | 19c8ead | 2014-12-04 11:49:27 -0500 | [diff] [blame] | 3328 | clear_luns_changed_on_target(devip); |
Douglas Gilbert | 8d039e2 | 2016-04-30 22:44:43 -0400 | [diff] [blame] | 3329 | |
| 3330 | select_report = cmd[2]; |
| 3331 | alloc_len = get_unaligned_be32(cmd + 6); |
| 3332 | |
| 3333 | if (alloc_len < 4) { |
| 3334 | pr_err("alloc len too small %d\n", alloc_len); |
| 3335 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3336 | return check_condition_result; |
| 3337 | } |
Douglas Gilbert | 8d039e2 | 2016-04-30 22:44:43 -0400 | [diff] [blame] | 3338 | |
| 3339 | switch (select_report) { |
| 3340 | case 0: /* all LUNs apart from W-LUNs */ |
| 3341 | lun_cnt = sdebug_max_luns; |
| 3342 | wlun_cnt = 0; |
| 3343 | break; |
| 3344 | case 1: /* only W-LUNs */ |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3345 | lun_cnt = 0; |
Douglas Gilbert | 8d039e2 | 2016-04-30 22:44:43 -0400 | [diff] [blame] | 3346 | wlun_cnt = 1; |
| 3347 | break; |
| 3348 | case 2: /* all LUNs */ |
| 3349 | lun_cnt = sdebug_max_luns; |
| 3350 | wlun_cnt = 1; |
| 3351 | break; |
| 3352 | case 0x10: /* only administrative LUs */ |
| 3353 | case 0x11: /* see SPC-5 */ |
| 3354 | case 0x12: /* only subsiduary LUs owned by referenced LU */ |
| 3355 | default: |
| 3356 | pr_debug("select report invalid %d\n", select_report); |
| 3357 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); |
| 3358 | return check_condition_result; |
| 3359 | } |
| 3360 | |
| 3361 | if (sdebug_no_lun_0 && (lun_cnt > 0)) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3362 | --lun_cnt; |
Douglas Gilbert | 8d039e2 | 2016-04-30 22:44:43 -0400 | [diff] [blame] | 3363 | |
| 3364 | tlun_cnt = lun_cnt + wlun_cnt; |
Douglas Gilbert | fb0cc8d | 2016-05-31 17:15:07 -0400 | [diff] [blame] | 3365 | rlen = tlun_cnt * sz_lun; /* excluding 8 byte header */ |
| 3366 | scsi_set_resid(scp, scsi_bufflen(scp)); |
Douglas Gilbert | 8d039e2 | 2016-04-30 22:44:43 -0400 | [diff] [blame] | 3367 | pr_debug("select_report %d luns = %d wluns = %d no_lun0 %d\n", |
| 3368 | select_report, lun_cnt, wlun_cnt, sdebug_no_lun_0); |
| 3369 | |
Douglas Gilbert | fb0cc8d | 2016-05-31 17:15:07 -0400 | [diff] [blame] | 3370 | /* loops rely on sizeof response header same as sizeof lun (both 8) */ |
Douglas Gilbert | 8d039e2 | 2016-04-30 22:44:43 -0400 | [diff] [blame] | 3371 | lun = sdebug_no_lun_0 ? 1 : 0; |
Douglas Gilbert | fb0cc8d | 2016-05-31 17:15:07 -0400 | [diff] [blame] | 3372 | for (k = 0, j = 0, res = 0; true; ++k, j = 0) { |
| 3373 | memset(arr, 0, sizeof(arr)); |
| 3374 | lun_p = (struct scsi_lun *)&arr[0]; |
| 3375 | if (k == 0) { |
| 3376 | put_unaligned_be32(rlen, &arr[0]); |
| 3377 | ++lun_p; |
| 3378 | j = 1; |
| 3379 | } |
| 3380 | for ( ; j < RL_BUCKET_ELEMS; ++j, ++lun_p) { |
| 3381 | if ((k * RL_BUCKET_ELEMS) + j > lun_cnt) |
| 3382 | break; |
| 3383 | int_to_scsilun(lun++, lun_p); |
| 3384 | } |
| 3385 | if (j < RL_BUCKET_ELEMS) |
| 3386 | break; |
| 3387 | n = j * sz_lun; |
| 3388 | res = p_fill_from_dev_buffer(scp, arr, n, off_rsp); |
| 3389 | if (res) |
| 3390 | return res; |
| 3391 | off_rsp += n; |
| 3392 | } |
| 3393 | if (wlun_cnt) { |
| 3394 | int_to_scsilun(SCSI_W_LUN_REPORT_LUNS, lun_p); |
| 3395 | ++j; |
| 3396 | } |
| 3397 | if (j > 0) |
| 3398 | res = p_fill_from_dev_buffer(scp, arr, j * sz_lun, off_rsp); |
Douglas Gilbert | 8d039e2 | 2016-04-30 22:44:43 -0400 | [diff] [blame] | 3399 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3400 | } |
| 3401 | |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3402 | static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
| 3403 | unsigned int num, struct sdebug_dev_info *devip) |
| 3404 | { |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3405 | int j; |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3406 | unsigned char *kaddr, *buf; |
| 3407 | unsigned int offset; |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3408 | struct scsi_data_buffer *sdb = scsi_in(scp); |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3409 | struct sg_mapping_iter miter; |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3410 | |
| 3411 | /* better not to use temporary buffer. */ |
Douglas Gilbert | b333a81 | 2016-04-25 12:16:30 -0400 | [diff] [blame] | 3412 | buf = kzalloc(scsi_bufflen(scp), GFP_ATOMIC); |
Akinobu Mita | c5af0db | 2014-02-26 22:57:01 +0900 | [diff] [blame] | 3413 | if (!buf) { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 3414 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, |
| 3415 | INSUFF_RES_ASCQ); |
Akinobu Mita | c5af0db | 2014-02-26 22:57:01 +0900 | [diff] [blame] | 3416 | return check_condition_result; |
| 3417 | } |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3418 | |
FUJITA Tomonori | 21a6182 | 2008-03-09 13:44:30 +0900 | [diff] [blame] | 3419 | scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3420 | |
| 3421 | offset = 0; |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3422 | sg_miter_start(&miter, sdb->table.sgl, sdb->table.nents, |
| 3423 | SG_MITER_ATOMIC | SG_MITER_TO_SG); |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3424 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3425 | while (sg_miter_next(&miter)) { |
| 3426 | kaddr = miter.addr; |
| 3427 | for (j = 0; j < miter.length; j++) |
| 3428 | *(kaddr + j) ^= *(buf + offset + j); |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3429 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3430 | offset += miter.length; |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3431 | } |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3432 | sg_miter_stop(&miter); |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3433 | kfree(buf); |
| 3434 | |
Akinobu Mita | be4e11b | 2014-02-26 22:57:02 +0900 | [diff] [blame] | 3435 | return 0; |
FUJITA Tomonori | c639d14 | 2008-01-23 01:32:01 +0900 | [diff] [blame] | 3436 | } |
| 3437 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 3438 | static int resp_xdwriteread_10(struct scsi_cmnd *scp, |
| 3439 | struct sdebug_dev_info *devip) |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3440 | { |
| 3441 | u8 *cmd = scp->cmnd; |
| 3442 | u64 lba; |
| 3443 | u32 num; |
| 3444 | int errsts; |
| 3445 | |
| 3446 | if (!scsi_bidi_cmnd(scp)) { |
| 3447 | mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, |
| 3448 | INSUFF_RES_ASCQ); |
| 3449 | return check_condition_result; |
| 3450 | } |
| 3451 | errsts = resp_read_dt0(scp, devip); |
| 3452 | if (errsts) |
| 3453 | return errsts; |
| 3454 | if (!(cmd[1] & 0x4)) { /* DISABLE_WRITE is not set */ |
| 3455 | errsts = resp_write_dt0(scp, devip); |
| 3456 | if (errsts) |
| 3457 | return errsts; |
| 3458 | } |
| 3459 | lba = get_unaligned_be32(cmd + 2); |
| 3460 | num = get_unaligned_be16(cmd + 7); |
| 3461 | return resp_xdwriteread(scp, lba, num, devip); |
| 3462 | } |
| 3463 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3464 | static struct sdebug_queue *get_queue(struct scsi_cmnd *cmnd) |
| 3465 | { |
| 3466 | struct sdebug_queue *sqp = sdebug_q_arr; |
| 3467 | |
| 3468 | if (sdebug_mq_active) { |
| 3469 | u32 tag = blk_mq_unique_tag(cmnd->request); |
| 3470 | u16 hwq = blk_mq_unique_tag_to_hwq(tag); |
| 3471 | |
| 3472 | if (unlikely(hwq >= submit_queues)) { |
| 3473 | pr_warn("Unexpected hwq=%d, apply modulo\n", hwq); |
| 3474 | hwq %= submit_queues; |
| 3475 | } |
| 3476 | pr_debug("tag=%u, hwq=%d\n", tag, hwq); |
| 3477 | return sqp + hwq; |
| 3478 | } else |
| 3479 | return sqp; |
| 3480 | } |
| 3481 | |
| 3482 | /* Queued (deferred) command completions converge here. */ |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 3483 | static void sdebug_q_cmd_complete(struct sdebug_defer *sd_dp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3484 | { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3485 | int qc_idx; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3486 | int retiring = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3487 | unsigned long iflags; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3488 | struct sdebug_queue *sqp; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3489 | struct sdebug_queued_cmd *sqcp; |
| 3490 | struct scsi_cmnd *scp; |
| 3491 | struct sdebug_dev_info *devip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3492 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3493 | qc_idx = sd_dp->qc_idx; |
| 3494 | sqp = sdebug_q_arr + sd_dp->sqa_idx; |
| 3495 | if (sdebug_statistics) { |
| 3496 | atomic_inc(&sdebug_completions); |
| 3497 | if (raw_smp_processor_id() != sd_dp->issuing_cpu) |
| 3498 | atomic_inc(&sdebug_miss_cpus); |
| 3499 | } |
| 3500 | if (unlikely((qc_idx < 0) || (qc_idx >= SDEBUG_CANQUEUE))) { |
| 3501 | pr_err("wild qc_idx=%d\n", qc_idx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3502 | return; |
| 3503 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3504 | spin_lock_irqsave(&sqp->qc_lock, iflags); |
| 3505 | sqcp = &sqp->qc_arr[qc_idx]; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3506 | scp = sqcp->a_cmnd; |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 3507 | if (unlikely(scp == NULL)) { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3508 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
| 3509 | pr_err("scp is NULL, sqa_idx=%d, qc_idx=%d\n", |
| 3510 | sd_dp->sqa_idx, qc_idx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3511 | return; |
| 3512 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3513 | devip = (struct sdebug_dev_info *)scp->device->hostdata; |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 3514 | if (likely(devip)) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3515 | atomic_dec(&devip->num_in_q); |
| 3516 | else |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 3517 | pr_err("devip=NULL\n"); |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 3518 | if (unlikely(atomic_read(&retired_max_queue) > 0)) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3519 | retiring = 1; |
| 3520 | |
| 3521 | sqcp->a_cmnd = NULL; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3522 | if (unlikely(!test_and_clear_bit(qc_idx, sqp->in_use_bm))) { |
| 3523 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 3524 | pr_err("Unexpected completion\n"); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3525 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3526 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3527 | |
| 3528 | if (unlikely(retiring)) { /* user has reduced max_queue */ |
| 3529 | int k, retval; |
| 3530 | |
| 3531 | retval = atomic_read(&retired_max_queue); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3532 | if (qc_idx >= retval) { |
| 3533 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 3534 | pr_err("index %d too large\n", retval); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3535 | return; |
| 3536 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3537 | k = find_last_bit(sqp->in_use_bm, retval); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3538 | if ((k < sdebug_max_queue) || (k == retval)) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3539 | atomic_set(&retired_max_queue, 0); |
| 3540 | else |
| 3541 | atomic_set(&retired_max_queue, k + 1); |
| 3542 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3543 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3544 | scp->scsi_done(scp); /* callback to mid level */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3545 | } |
| 3546 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3547 | /* When high resolution timer goes off this function is called. */ |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 3548 | static enum hrtimer_restart sdebug_q_cmd_hrt_complete(struct hrtimer *timer) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3549 | { |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 3550 | struct sdebug_defer *sd_dp = container_of(timer, struct sdebug_defer, |
| 3551 | hrt); |
| 3552 | sdebug_q_cmd_complete(sd_dp); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3553 | return HRTIMER_NORESTART; |
| 3554 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3555 | |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 3556 | /* When work queue schedules work, it calls this function. */ |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 3557 | static void sdebug_q_cmd_wq_complete(struct work_struct *work) |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 3558 | { |
| 3559 | struct sdebug_defer *sd_dp = container_of(work, struct sdebug_defer, |
| 3560 | ew.work); |
| 3561 | sdebug_q_cmd_complete(sd_dp); |
| 3562 | } |
| 3563 | |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 3564 | static bool got_shared_uuid; |
| 3565 | static uuid_be shared_uuid; |
| 3566 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 3567 | static struct sdebug_dev_info *sdebug_device_create( |
| 3568 | struct sdebug_host_info *sdbg_host, gfp_t flags) |
FUJITA Tomonori | 5cb2fc0 | 2008-03-20 11:09:16 +0900 | [diff] [blame] | 3569 | { |
| 3570 | struct sdebug_dev_info *devip; |
| 3571 | |
| 3572 | devip = kzalloc(sizeof(*devip), flags); |
| 3573 | if (devip) { |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 3574 | if (sdebug_uuid_ctl == 1) |
| 3575 | uuid_be_gen(&devip->lu_name); |
| 3576 | else if (sdebug_uuid_ctl == 2) { |
| 3577 | if (got_shared_uuid) |
| 3578 | devip->lu_name = shared_uuid; |
| 3579 | else { |
| 3580 | uuid_be_gen(&shared_uuid); |
| 3581 | got_shared_uuid = true; |
| 3582 | devip->lu_name = shared_uuid; |
| 3583 | } |
| 3584 | } |
FUJITA Tomonori | 5cb2fc0 | 2008-03-20 11:09:16 +0900 | [diff] [blame] | 3585 | devip->sdbg_host = sdbg_host; |
| 3586 | list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); |
| 3587 | } |
| 3588 | return devip; |
| 3589 | } |
| 3590 | |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 3591 | static struct sdebug_dev_info *find_build_dev_info(struct scsi_device *sdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3592 | { |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 3593 | struct sdebug_host_info *sdbg_host; |
| 3594 | struct sdebug_dev_info *open_devip = NULL; |
| 3595 | struct sdebug_dev_info *devip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3596 | |
FUJITA Tomonori | d1e4c9c | 2008-03-02 18:30:18 +0900 | [diff] [blame] | 3597 | sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
| 3598 | if (!sdbg_host) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 3599 | pr_err("Host info NULL\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3600 | return NULL; |
| 3601 | } |
| 3602 | list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { |
| 3603 | if ((devip->used) && (devip->channel == sdev->channel) && |
| 3604 | (devip->target == sdev->id) && |
| 3605 | (devip->lun == sdev->lun)) |
| 3606 | return devip; |
| 3607 | else { |
| 3608 | if ((!devip->used) && (!open_devip)) |
| 3609 | open_devip = devip; |
| 3610 | } |
| 3611 | } |
FUJITA Tomonori | 5cb2fc0 | 2008-03-20 11:09:16 +0900 | [diff] [blame] | 3612 | if (!open_devip) { /* try and make a new one */ |
| 3613 | open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); |
| 3614 | if (!open_devip) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 3615 | pr_err("out of memory at line %d\n", __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3616 | return NULL; |
| 3617 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3618 | } |
FUJITA Tomonori | a75869d | 2008-03-20 11:09:17 +0900 | [diff] [blame] | 3619 | |
| 3620 | open_devip->channel = sdev->channel; |
| 3621 | open_devip->target = sdev->id; |
| 3622 | open_devip->lun = sdev->lun; |
| 3623 | open_devip->sdbg_host = sdbg_host; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3624 | atomic_set(&open_devip->num_in_q, 0); |
| 3625 | set_bit(SDEBUG_UA_POR, open_devip->uas_bm); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3626 | open_devip->used = true; |
FUJITA Tomonori | a75869d | 2008-03-20 11:09:17 +0900 | [diff] [blame] | 3627 | return open_devip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3628 | } |
| 3629 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3630 | static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3631 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3632 | if (sdebug_verbose) |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 3633 | pr_info("slave_alloc <%u %u %u %llu>\n", |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3634 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
Nick Piggin | 75ad23b | 2008-04-29 14:48:33 +0200 | [diff] [blame] | 3635 | queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3636 | return 0; |
| 3637 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3638 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3639 | static int scsi_debug_slave_configure(struct scsi_device *sdp) |
| 3640 | { |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 3641 | struct sdebug_dev_info *devip = |
| 3642 | (struct sdebug_dev_info *)sdp->hostdata; |
FUJITA Tomonori | a34c4e9 | 2008-03-25 09:26:50 +0900 | [diff] [blame] | 3643 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3644 | if (sdebug_verbose) |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 3645 | pr_info("slave_configure <%u %u %u %llu>\n", |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3646 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 3647 | if (sdp->host->max_cmd_len != SDEBUG_MAX_CMD_LEN) |
| 3648 | sdp->host->max_cmd_len = SDEBUG_MAX_CMD_LEN; |
| 3649 | if (devip == NULL) { |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 3650 | devip = find_build_dev_info(sdp); |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 3651 | if (devip == NULL) |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 3652 | return 1; /* no resources, will be marked offline */ |
| 3653 | } |
Christoph Hellwig | c8b09f6 | 2014-11-03 20:15:14 +0100 | [diff] [blame] | 3654 | sdp->hostdata = devip; |
Akinobu Mita | 6bb5e6e | 2014-06-02 22:56:49 +0900 | [diff] [blame] | 3655 | blk_queue_max_segment_size(sdp->request_queue, -1U); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3656 | if (sdebug_no_uld) |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 3657 | sdp->no_uld_attach = 1; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3658 | return 0; |
| 3659 | } |
| 3660 | |
| 3661 | static void scsi_debug_slave_destroy(struct scsi_device *sdp) |
| 3662 | { |
| 3663 | struct sdebug_dev_info *devip = |
| 3664 | (struct sdebug_dev_info *)sdp->hostdata; |
| 3665 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3666 | if (sdebug_verbose) |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 3667 | pr_info("slave_destroy <%u %u %u %llu>\n", |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3668 | sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
| 3669 | if (devip) { |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 3670 | /* make this slot available for re-use */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 3671 | devip->used = false; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3672 | sdp->hostdata = NULL; |
| 3673 | } |
| 3674 | } |
| 3675 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3676 | static void stop_qc_helper(struct sdebug_defer *sd_dp) |
| 3677 | { |
| 3678 | if (!sd_dp) |
| 3679 | return; |
| 3680 | if ((sdebug_jdelay > 0) || (sdebug_ndelay > 0)) |
| 3681 | hrtimer_cancel(&sd_dp->hrt); |
| 3682 | else if (sdebug_jdelay < 0) |
| 3683 | cancel_work_sync(&sd_dp->ew.work); |
| 3684 | } |
| 3685 | |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 3686 | /* If @cmnd found deletes its timer or work queue and returns true; else |
| 3687 | returns false */ |
| 3688 | static bool stop_queued_cmnd(struct scsi_cmnd *cmnd) |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3689 | { |
| 3690 | unsigned long iflags; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3691 | int j, k, qmax, r_qmax; |
| 3692 | struct sdebug_queue *sqp; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3693 | struct sdebug_queued_cmd *sqcp; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3694 | struct sdebug_dev_info *devip; |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 3695 | struct sdebug_defer *sd_dp; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3696 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3697 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) { |
| 3698 | spin_lock_irqsave(&sqp->qc_lock, iflags); |
| 3699 | qmax = sdebug_max_queue; |
| 3700 | r_qmax = atomic_read(&retired_max_queue); |
| 3701 | if (r_qmax > qmax) |
| 3702 | qmax = r_qmax; |
| 3703 | for (k = 0; k < qmax; ++k) { |
| 3704 | if (test_bit(k, sqp->in_use_bm)) { |
| 3705 | sqcp = &sqp->qc_arr[k]; |
| 3706 | if (cmnd != sqcp->a_cmnd) |
| 3707 | continue; |
| 3708 | /* found */ |
| 3709 | devip = (struct sdebug_dev_info *) |
| 3710 | cmnd->device->hostdata; |
| 3711 | if (devip) |
| 3712 | atomic_dec(&devip->num_in_q); |
| 3713 | sqcp->a_cmnd = NULL; |
| 3714 | sd_dp = sqcp->sd_dp; |
| 3715 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
| 3716 | stop_qc_helper(sd_dp); |
| 3717 | clear_bit(k, sqp->in_use_bm); |
| 3718 | return true; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3719 | } |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3720 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3721 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3722 | } |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 3723 | return false; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3724 | } |
| 3725 | |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 3726 | /* Deletes (stops) timers or work queues of all queued commands */ |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3727 | static void stop_all_queued(void) |
| 3728 | { |
| 3729 | unsigned long iflags; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3730 | int j, k; |
| 3731 | struct sdebug_queue *sqp; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3732 | struct sdebug_queued_cmd *sqcp; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3733 | struct sdebug_dev_info *devip; |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 3734 | struct sdebug_defer *sd_dp; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3735 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3736 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) { |
| 3737 | spin_lock_irqsave(&sqp->qc_lock, iflags); |
| 3738 | for (k = 0; k < SDEBUG_CANQUEUE; ++k) { |
| 3739 | if (test_bit(k, sqp->in_use_bm)) { |
| 3740 | sqcp = &sqp->qc_arr[k]; |
| 3741 | if (sqcp->a_cmnd == NULL) |
| 3742 | continue; |
| 3743 | devip = (struct sdebug_dev_info *) |
| 3744 | sqcp->a_cmnd->device->hostdata; |
| 3745 | if (devip) |
| 3746 | atomic_dec(&devip->num_in_q); |
| 3747 | sqcp->a_cmnd = NULL; |
| 3748 | sd_dp = sqcp->sd_dp; |
| 3749 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
| 3750 | stop_qc_helper(sd_dp); |
| 3751 | clear_bit(k, sqp->in_use_bm); |
| 3752 | spin_lock_irqsave(&sqp->qc_lock, iflags); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3753 | } |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3754 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3755 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 3756 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3757 | } |
| 3758 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3759 | /* Free queued command memory on heap */ |
| 3760 | static void free_all_queued(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3761 | { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3762 | int j, k; |
| 3763 | struct sdebug_queue *sqp; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3764 | struct sdebug_queued_cmd *sqcp; |
| 3765 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3766 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) { |
| 3767 | for (k = 0; k < SDEBUG_CANQUEUE; ++k) { |
| 3768 | sqcp = &sqp->qc_arr[k]; |
| 3769 | kfree(sqcp->sd_dp); |
| 3770 | sqcp->sd_dp = NULL; |
| 3771 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3772 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3773 | } |
| 3774 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3775 | static int scsi_debug_abort(struct scsi_cmnd *SCpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3776 | { |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 3777 | bool ok; |
| 3778 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3779 | ++num_aborts; |
| 3780 | if (SCpnt) { |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 3781 | ok = stop_queued_cmnd(SCpnt); |
| 3782 | if (SCpnt->device && (SDEBUG_OPT_ALL_NOISE & sdebug_opts)) |
| 3783 | sdev_printk(KERN_INFO, SCpnt->device, |
| 3784 | "%s: command%s found\n", __func__, |
| 3785 | ok ? "" : " not"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3786 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3787 | return SUCCESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3788 | } |
| 3789 | |
| 3790 | static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) |
| 3791 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3792 | ++num_dev_resets; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3793 | if (SCpnt && SCpnt->device) { |
| 3794 | struct scsi_device *sdp = SCpnt->device; |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 3795 | struct sdebug_dev_info *devip = |
| 3796 | (struct sdebug_dev_info *)sdp->hostdata; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3797 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3798 | if (SDEBUG_OPT_ALL_NOISE & sdebug_opts) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3799 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3800 | if (devip) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3801 | set_bit(SDEBUG_UA_POR, devip->uas_bm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3802 | } |
| 3803 | return SUCCESS; |
| 3804 | } |
| 3805 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3806 | static int scsi_debug_target_reset(struct scsi_cmnd *SCpnt) |
| 3807 | { |
| 3808 | struct sdebug_host_info *sdbg_host; |
| 3809 | struct sdebug_dev_info *devip; |
| 3810 | struct scsi_device *sdp; |
| 3811 | struct Scsi_Host *hp; |
| 3812 | int k = 0; |
| 3813 | |
| 3814 | ++num_target_resets; |
| 3815 | if (!SCpnt) |
| 3816 | goto lie; |
| 3817 | sdp = SCpnt->device; |
| 3818 | if (!sdp) |
| 3819 | goto lie; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3820 | if (SDEBUG_OPT_ALL_NOISE & sdebug_opts) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3821 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); |
| 3822 | hp = sdp->host; |
| 3823 | if (!hp) |
| 3824 | goto lie; |
| 3825 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
| 3826 | if (sdbg_host) { |
| 3827 | list_for_each_entry(devip, |
| 3828 | &sdbg_host->dev_info_list, |
| 3829 | dev_list) |
| 3830 | if (devip->target == sdp->id) { |
| 3831 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); |
| 3832 | ++k; |
| 3833 | } |
| 3834 | } |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3835 | if (SDEBUG_OPT_RESET_NOISE & sdebug_opts) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3836 | sdev_printk(KERN_INFO, sdp, |
| 3837 | "%s: %d device(s) found in target\n", __func__, k); |
| 3838 | lie: |
| 3839 | return SUCCESS; |
| 3840 | } |
| 3841 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3842 | static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) |
| 3843 | { |
| 3844 | struct sdebug_host_info *sdbg_host; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3845 | struct sdebug_dev_info *devip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3846 | struct scsi_device * sdp; |
| 3847 | struct Scsi_Host * hp; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3848 | int k = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3849 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3850 | ++num_bus_resets; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3851 | if (!(SCpnt && SCpnt->device)) |
| 3852 | goto lie; |
| 3853 | sdp = SCpnt->device; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3854 | if (SDEBUG_OPT_ALL_NOISE & sdebug_opts) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3855 | sdev_printk(KERN_INFO, sdp, "%s\n", __func__); |
| 3856 | hp = sdp->host; |
| 3857 | if (hp) { |
FUJITA Tomonori | d1e4c9c | 2008-03-02 18:30:18 +0900 | [diff] [blame] | 3858 | sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3859 | if (sdbg_host) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3860 | list_for_each_entry(devip, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3861 | &sdbg_host->dev_info_list, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3862 | dev_list) { |
| 3863 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); |
| 3864 | ++k; |
| 3865 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3866 | } |
| 3867 | } |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3868 | if (SDEBUG_OPT_RESET_NOISE & sdebug_opts) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3869 | sdev_printk(KERN_INFO, sdp, |
| 3870 | "%s: %d device(s) found in host\n", __func__, k); |
| 3871 | lie: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3872 | return SUCCESS; |
| 3873 | } |
| 3874 | |
| 3875 | static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) |
| 3876 | { |
| 3877 | struct sdebug_host_info * sdbg_host; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3878 | struct sdebug_dev_info *devip; |
| 3879 | int k = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3880 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3881 | ++num_host_resets; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3882 | if ((SCpnt->device) && (SDEBUG_OPT_ALL_NOISE & sdebug_opts)) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3883 | sdev_printk(KERN_INFO, SCpnt->device, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3884 | spin_lock(&sdebug_host_list_lock); |
| 3885 | list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3886 | list_for_each_entry(devip, &sdbg_host->dev_info_list, |
| 3887 | dev_list) { |
| 3888 | set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm); |
| 3889 | ++k; |
| 3890 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3891 | } |
| 3892 | spin_unlock(&sdebug_host_list_lock); |
| 3893 | stop_all_queued(); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3894 | if (SDEBUG_OPT_RESET_NOISE & sdebug_opts) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 3895 | sdev_printk(KERN_INFO, SCpnt->device, |
| 3896 | "%s: %d device(s) found\n", __func__, k); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3897 | return SUCCESS; |
| 3898 | } |
| 3899 | |
FUJITA Tomonori | f58b0ef | 2008-03-30 00:59:54 +0900 | [diff] [blame] | 3900 | static void __init sdebug_build_parts(unsigned char *ramp, |
FUJITA Tomonori | 5f2578e | 2008-03-30 00:59:57 +0900 | [diff] [blame] | 3901 | unsigned long store_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3902 | { |
| 3903 | struct partition * pp; |
| 3904 | int starts[SDEBUG_MAX_PARTS + 2]; |
| 3905 | int sectors_per_part, num_sectors, k; |
| 3906 | int heads_by_sects, start_sec, end_sec; |
| 3907 | |
| 3908 | /* assume partition table already zeroed */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3909 | if ((sdebug_num_parts < 1) || (store_size < 1048576)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3910 | return; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3911 | if (sdebug_num_parts > SDEBUG_MAX_PARTS) { |
| 3912 | sdebug_num_parts = SDEBUG_MAX_PARTS; |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 3913 | pr_warn("reducing partitions to %d\n", SDEBUG_MAX_PARTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3914 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 3915 | num_sectors = (int)sdebug_store_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3916 | sectors_per_part = (num_sectors - sdebug_sectors_per) |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3917 | / sdebug_num_parts; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3918 | heads_by_sects = sdebug_heads * sdebug_sectors_per; |
| 3919 | starts[0] = sdebug_sectors_per; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3920 | for (k = 1; k < sdebug_num_parts; ++k) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3921 | starts[k] = ((k * sectors_per_part) / heads_by_sects) |
| 3922 | * heads_by_sects; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 3923 | starts[sdebug_num_parts] = num_sectors; |
| 3924 | starts[sdebug_num_parts + 1] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3925 | |
| 3926 | ramp[510] = 0x55; /* magic partition markings */ |
| 3927 | ramp[511] = 0xAA; |
| 3928 | pp = (struct partition *)(ramp + 0x1be); |
| 3929 | for (k = 0; starts[k + 1]; ++k, ++pp) { |
| 3930 | start_sec = starts[k]; |
| 3931 | end_sec = starts[k + 1] - 1; |
| 3932 | pp->boot_ind = 0; |
| 3933 | |
| 3934 | pp->cyl = start_sec / heads_by_sects; |
| 3935 | pp->head = (start_sec - (pp->cyl * heads_by_sects)) |
| 3936 | / sdebug_sectors_per; |
| 3937 | pp->sector = (start_sec % sdebug_sectors_per) + 1; |
| 3938 | |
| 3939 | pp->end_cyl = end_sec / heads_by_sects; |
| 3940 | pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) |
| 3941 | / sdebug_sectors_per; |
| 3942 | pp->end_sector = (end_sec % sdebug_sectors_per) + 1; |
| 3943 | |
Akinobu Mita | 150c354 | 2013-08-26 22:08:40 +0900 | [diff] [blame] | 3944 | pp->start_sect = cpu_to_le32(start_sec); |
| 3945 | pp->nr_sects = cpu_to_le32(end_sec - start_sec + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3946 | pp->sys_ind = 0x83; /* plain Linux partition */ |
| 3947 | } |
| 3948 | } |
| 3949 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 3950 | static void block_unblock_all_queues(bool block) |
| 3951 | { |
| 3952 | int j; |
| 3953 | struct sdebug_queue *sqp; |
| 3954 | |
| 3955 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) |
| 3956 | atomic_set(&sqp->blocked, (int)block); |
| 3957 | } |
| 3958 | |
| 3959 | /* Adjust (by rounding down) the sdebug_cmnd_count so abs(every_nth)-1 |
| 3960 | * commands will be processed normally before triggers occur. |
| 3961 | */ |
| 3962 | static void tweak_cmnd_count(void) |
| 3963 | { |
| 3964 | int count, modulo; |
| 3965 | |
| 3966 | modulo = abs(sdebug_every_nth); |
| 3967 | if (modulo < 2) |
| 3968 | return; |
| 3969 | block_unblock_all_queues(true); |
| 3970 | count = atomic_read(&sdebug_cmnd_count); |
| 3971 | atomic_set(&sdebug_cmnd_count, (count / modulo) * modulo); |
| 3972 | block_unblock_all_queues(false); |
| 3973 | } |
| 3974 | |
| 3975 | static void clear_queue_stats(void) |
| 3976 | { |
| 3977 | atomic_set(&sdebug_cmnd_count, 0); |
| 3978 | atomic_set(&sdebug_completions, 0); |
| 3979 | atomic_set(&sdebug_miss_cpus, 0); |
| 3980 | atomic_set(&sdebug_a_tsf, 0); |
| 3981 | } |
| 3982 | |
| 3983 | static void setup_inject(struct sdebug_queue *sqp, |
| 3984 | struct sdebug_queued_cmd *sqcp) |
| 3985 | { |
| 3986 | if ((atomic_read(&sdebug_cmnd_count) % abs(sdebug_every_nth)) > 0) |
| 3987 | return; |
| 3988 | sqcp->inj_recovered = !!(SDEBUG_OPT_RECOVERED_ERR & sdebug_opts); |
| 3989 | sqcp->inj_transport = !!(SDEBUG_OPT_TRANSPORT_ERR & sdebug_opts); |
| 3990 | sqcp->inj_dif = !!(SDEBUG_OPT_DIF_ERR & sdebug_opts); |
| 3991 | sqcp->inj_dix = !!(SDEBUG_OPT_DIX_ERR & sdebug_opts); |
| 3992 | sqcp->inj_short = !!(SDEBUG_OPT_SHORT_TRANSFER & sdebug_opts); |
| 3993 | } |
| 3994 | |
| 3995 | /* Complete the processing of the thread that queued a SCSI command to this |
| 3996 | * driver. It either completes the command by calling cmnd_done() or |
| 3997 | * schedules a hr timer or work queue then returns 0. Returns |
| 3998 | * SCSI_MLQUEUE_HOST_BUSY if temporarily out of resources. |
| 3999 | */ |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 4000 | static int schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip, |
| 4001 | int scsi_result, int delta_jiff) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4002 | { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4003 | unsigned long iflags; |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 4004 | int k, num_in_q, qdepth, inject; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4005 | struct sdebug_queue *sqp; |
| 4006 | struct sdebug_queued_cmd *sqcp; |
Tomas Winkler | 299b6c0 | 2015-07-28 16:54:24 +0300 | [diff] [blame] | 4007 | struct scsi_device *sdp; |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 4008 | struct sdebug_defer *sd_dp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4009 | |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 4010 | if (unlikely(devip == NULL)) { |
| 4011 | if (scsi_result == 0) |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 4012 | scsi_result = DID_NO_CONNECT << 16; |
| 4013 | goto respond_in_thread; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4014 | } |
Tomas Winkler | 299b6c0 | 2015-07-28 16:54:24 +0300 | [diff] [blame] | 4015 | sdp = cmnd->device; |
| 4016 | |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 4017 | if (unlikely(sdebug_verbose && scsi_result)) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4018 | sdev_printk(KERN_INFO, sdp, "%s: non-zero result=0x%x\n", |
| 4019 | __func__, scsi_result); |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 4020 | if (delta_jiff == 0) |
| 4021 | goto respond_in_thread; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4022 | |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 4023 | /* schedule the response at a later time if resources permit */ |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4024 | sqp = get_queue(cmnd); |
| 4025 | spin_lock_irqsave(&sqp->qc_lock, iflags); |
| 4026 | if (unlikely(atomic_read(&sqp->blocked))) { |
| 4027 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
| 4028 | return SCSI_MLQUEUE_HOST_BUSY; |
| 4029 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4030 | num_in_q = atomic_read(&devip->num_in_q); |
| 4031 | qdepth = cmnd->device->queue_depth; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4032 | inject = 0; |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 4033 | if (unlikely((qdepth > 0) && (num_in_q >= qdepth))) { |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 4034 | if (scsi_result) { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4035 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 4036 | goto respond_in_thread; |
| 4037 | } else |
| 4038 | scsi_result = device_qfull_result; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4039 | } else if (unlikely(sdebug_every_nth && |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 4040 | (SDEBUG_OPT_RARE_TSF & sdebug_opts) && |
| 4041 | (scsi_result == 0))) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4042 | if ((num_in_q == (qdepth - 1)) && |
| 4043 | (atomic_inc_return(&sdebug_a_tsf) >= |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4044 | abs(sdebug_every_nth))) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4045 | atomic_set(&sdebug_a_tsf, 0); |
| 4046 | inject = 1; |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 4047 | scsi_result = device_qfull_result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4048 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4049 | } |
| 4050 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4051 | k = find_first_zero_bit(sqp->in_use_bm, sdebug_max_queue); |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 4052 | if (unlikely(k >= sdebug_max_queue)) { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4053 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 4054 | if (scsi_result) |
| 4055 | goto respond_in_thread; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4056 | else if (SDEBUG_OPT_ALL_TSF & sdebug_opts) |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 4057 | scsi_result = device_qfull_result; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4058 | if (SDEBUG_OPT_Q_NOISE & sdebug_opts) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4059 | sdev_printk(KERN_INFO, sdp, |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 4060 | "%s: max_queue=%d exceeded, %s\n", |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4061 | __func__, sdebug_max_queue, |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 4062 | (scsi_result ? "status: TASK SET FULL" : |
| 4063 | "report: host busy")); |
| 4064 | if (scsi_result) |
| 4065 | goto respond_in_thread; |
| 4066 | else |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4067 | return SCSI_MLQUEUE_HOST_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4068 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4069 | __set_bit(k, sqp->in_use_bm); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4070 | atomic_inc(&devip->num_in_q); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4071 | sqcp = &sqp->qc_arr[k]; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4072 | sqcp->a_cmnd = cmnd; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4073 | cmnd->host_scribble = (unsigned char *)sqcp; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4074 | cmnd->result = scsi_result; |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 4075 | sd_dp = sqcp->sd_dp; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4076 | spin_unlock_irqrestore(&sqp->qc_lock, iflags); |
| 4077 | if (unlikely(sdebug_every_nth && sdebug_any_injecting_opt)) |
| 4078 | setup_inject(sqp, sqcp); |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 4079 | if (delta_jiff > 0 || sdebug_ndelay > 0) { |
Douglas Gilbert | b333a81 | 2016-04-25 12:16:30 -0400 | [diff] [blame] | 4080 | ktime_t kt; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4081 | |
Douglas Gilbert | b333a81 | 2016-04-25 12:16:30 -0400 | [diff] [blame] | 4082 | if (delta_jiff > 0) { |
| 4083 | struct timespec ts; |
| 4084 | |
| 4085 | jiffies_to_timespec(delta_jiff, &ts); |
| 4086 | kt = ktime_set(ts.tv_sec, ts.tv_nsec); |
| 4087 | } else |
| 4088 | kt = ktime_set(0, sdebug_ndelay); |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 4089 | if (NULL == sd_dp) { |
| 4090 | sd_dp = kzalloc(sizeof(*sd_dp), GFP_ATOMIC); |
| 4091 | if (NULL == sd_dp) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4092 | return SCSI_MLQUEUE_HOST_BUSY; |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 4093 | sqcp->sd_dp = sd_dp; |
| 4094 | hrtimer_init(&sd_dp->hrt, CLOCK_MONOTONIC, |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4095 | HRTIMER_MODE_REL_PINNED); |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 4096 | sd_dp->hrt.function = sdebug_q_cmd_hrt_complete; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4097 | sd_dp->sqa_idx = sqp - sdebug_q_arr; |
| 4098 | sd_dp->qc_idx = k; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4099 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4100 | if (sdebug_statistics) |
| 4101 | sd_dp->issuing_cpu = raw_smp_processor_id(); |
| 4102 | hrtimer_start(&sd_dp->hrt, kt, HRTIMER_MODE_REL_PINNED); |
| 4103 | } else { /* jdelay < 0, use work queue */ |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 4104 | if (NULL == sd_dp) { |
| 4105 | sd_dp = kzalloc(sizeof(*sqcp->sd_dp), GFP_ATOMIC); |
| 4106 | if (NULL == sd_dp) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4107 | return SCSI_MLQUEUE_HOST_BUSY; |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 4108 | sqcp->sd_dp = sd_dp; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4109 | sd_dp->sqa_idx = sqp - sdebug_q_arr; |
| 4110 | sd_dp->qc_idx = k; |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 4111 | INIT_WORK(&sd_dp->ew.work, sdebug_q_cmd_wq_complete); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4112 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4113 | if (sdebug_statistics) |
| 4114 | sd_dp->issuing_cpu = raw_smp_processor_id(); |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 4115 | schedule_work(&sd_dp->ew.work); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4116 | } |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 4117 | if (unlikely((SDEBUG_OPT_Q_NOISE & sdebug_opts) && |
| 4118 | (scsi_result == device_qfull_result))) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4119 | sdev_printk(KERN_INFO, sdp, |
| 4120 | "%s: num_in_q=%d +1, %s%s\n", __func__, |
| 4121 | num_in_q, (inject ? "<inject> " : ""), |
| 4122 | "status: TASK SET FULL"); |
| 4123 | return 0; |
Douglas Gilbert | cd62b7d | 2014-08-05 12:20:46 +0200 | [diff] [blame] | 4124 | |
| 4125 | respond_in_thread: /* call back to mid-layer using invocation thread */ |
| 4126 | cmnd->result = scsi_result; |
| 4127 | cmnd->scsi_done(cmnd); |
| 4128 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4129 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4130 | |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4131 | /* Note: The following macros create attribute files in the |
| 4132 | /sys/module/scsi_debug/parameters directory. Unfortunately this |
| 4133 | driver is unaware of a change and cannot trigger auxiliary actions |
| 4134 | as it can when the corresponding attribute in the |
| 4135 | /sys/bus/pseudo/drivers/scsi_debug directory is changed. |
| 4136 | */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4137 | module_param_named(add_host, sdebug_add_host, int, S_IRUGO | S_IWUSR); |
| 4138 | module_param_named(ato, sdebug_ato, int, S_IRUGO); |
| 4139 | module_param_named(clustering, sdebug_clustering, bool, S_IRUGO | S_IWUSR); |
Douglas Gilbert | c220609 | 2016-04-25 12:16:31 -0400 | [diff] [blame] | 4140 | module_param_named(delay, sdebug_jdelay, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4141 | module_param_named(dev_size_mb, sdebug_dev_size_mb, int, S_IRUGO); |
| 4142 | module_param_named(dif, sdebug_dif, int, S_IRUGO); |
| 4143 | module_param_named(dix, sdebug_dix, int, S_IRUGO); |
| 4144 | module_param_named(dsense, sdebug_dsense, int, S_IRUGO | S_IWUSR); |
| 4145 | module_param_named(every_nth, sdebug_every_nth, int, S_IRUGO | S_IWUSR); |
| 4146 | module_param_named(fake_rw, sdebug_fake_rw, int, S_IRUGO | S_IWUSR); |
| 4147 | module_param_named(guard, sdebug_guard, uint, S_IRUGO); |
| 4148 | module_param_named(host_lock, sdebug_host_lock, bool, S_IRUGO | S_IWUSR); |
| 4149 | module_param_named(lbpu, sdebug_lbpu, int, S_IRUGO); |
| 4150 | module_param_named(lbpws, sdebug_lbpws, int, S_IRUGO); |
| 4151 | module_param_named(lbpws10, sdebug_lbpws10, int, S_IRUGO); |
| 4152 | module_param_named(lbprz, sdebug_lbprz, int, S_IRUGO); |
| 4153 | module_param_named(lowest_aligned, sdebug_lowest_aligned, int, S_IRUGO); |
| 4154 | module_param_named(max_luns, sdebug_max_luns, int, S_IRUGO | S_IWUSR); |
| 4155 | module_param_named(max_queue, sdebug_max_queue, int, S_IRUGO | S_IWUSR); |
| 4156 | module_param_named(ndelay, sdebug_ndelay, int, S_IRUGO | S_IWUSR); |
| 4157 | module_param_named(no_lun_0, sdebug_no_lun_0, int, S_IRUGO | S_IWUSR); |
| 4158 | module_param_named(no_uld, sdebug_no_uld, int, S_IRUGO); |
| 4159 | module_param_named(num_parts, sdebug_num_parts, int, S_IRUGO); |
| 4160 | module_param_named(num_tgts, sdebug_num_tgts, int, S_IRUGO | S_IWUSR); |
| 4161 | module_param_named(opt_blks, sdebug_opt_blks, int, S_IRUGO); |
| 4162 | module_param_named(opts, sdebug_opts, int, S_IRUGO | S_IWUSR); |
| 4163 | module_param_named(physblk_exp, sdebug_physblk_exp, int, S_IRUGO); |
| 4164 | module_param_named(ptype, sdebug_ptype, int, S_IRUGO | S_IWUSR); |
| 4165 | module_param_named(removable, sdebug_removable, bool, S_IRUGO | S_IWUSR); |
| 4166 | module_param_named(scsi_level, sdebug_scsi_level, int, S_IRUGO); |
| 4167 | module_param_named(sector_size, sdebug_sector_size, int, S_IRUGO); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4168 | module_param_named(statistics, sdebug_statistics, bool, S_IRUGO | S_IWUSR); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4169 | module_param_named(strict, sdebug_strict, bool, S_IRUGO | S_IWUSR); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4170 | module_param_named(submit_queues, submit_queues, int, S_IRUGO); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4171 | module_param_named(unmap_alignment, sdebug_unmap_alignment, int, S_IRUGO); |
| 4172 | module_param_named(unmap_granularity, sdebug_unmap_granularity, int, S_IRUGO); |
| 4173 | module_param_named(unmap_max_blocks, sdebug_unmap_max_blocks, int, S_IRUGO); |
| 4174 | module_param_named(unmap_max_desc, sdebug_unmap_max_desc, int, S_IRUGO); |
| 4175 | module_param_named(virtual_gb, sdebug_virtual_gb, int, S_IRUGO | S_IWUSR); |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 4176 | module_param_named(uuid_ctl, sdebug_uuid_ctl, int, S_IRUGO); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4177 | module_param_named(vpd_use_hostno, sdebug_vpd_use_hostno, int, |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4178 | S_IRUGO | S_IWUSR); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4179 | module_param_named(write_same_length, sdebug_write_same_length, int, |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4180 | S_IRUGO | S_IWUSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4181 | |
| 4182 | MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); |
| 4183 | MODULE_DESCRIPTION("SCSI debug adapter driver"); |
| 4184 | MODULE_LICENSE("GPL"); |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 4185 | MODULE_VERSION(SDEBUG_VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4186 | |
| 4187 | MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4188 | 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] | 4189 | MODULE_PARM_DESC(clustering, "when set enables larger transfers (def=0)"); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4190 | 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] | 4191 | 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] | 4192 | MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); |
| 4193 | MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4194 | MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); |
Randy Dunlap | beb87c3 | 2007-06-11 11:36:40 -0700 | [diff] [blame] | 4195 | MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4196 | 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] | 4197 | MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)"); |
Douglas Gilbert | 185dd23 | 2016-04-25 12:16:29 -0400 | [diff] [blame] | 4198 | MODULE_PARM_DESC(host_lock, "host_lock is ignored (def=0)"); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4199 | MODULE_PARM_DESC(lbpu, "enable LBP, support UNMAP command (def=0)"); |
| 4200 | MODULE_PARM_DESC(lbpws, "enable LBP, support WRITE SAME(16) with UNMAP bit (def=0)"); |
| 4201 | MODULE_PARM_DESC(lbpws10, "enable LBP, support WRITE SAME(10) with UNMAP bit (def=0)"); |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 4202 | MODULE_PARM_DESC(lbprz, |
| 4203 | "on read unmapped LBs return 0 when 1 (def), return 0xff when 2"); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4204 | MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4205 | 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] | 4206 | MODULE_PARM_DESC(max_queue, "max number of queued commands (1 to max(def))"); |
| 4207 | MODULE_PARM_DESC(ndelay, "response delay in nanoseconds (def=0 -> ignore)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4208 | 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] | 4209 | 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] | 4210 | MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4211 | MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); |
Martin K. Petersen | 32c5844 | 2015-12-16 17:53:51 -0500 | [diff] [blame] | 4212 | MODULE_PARM_DESC(opt_blks, "optimal transfer length in blocks (def=1024)"); |
Douglas Gilbert | 6f3cbf5 | 2007-01-05 00:05:25 -0500 | [diff] [blame] | 4213 | 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] | 4214 | MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4215 | MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 4216 | MODULE_PARM_DESC(removable, "claim to have removable media (def=0)"); |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 4217 | MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=7[SPC-5])"); |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 4218 | MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)"); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4219 | MODULE_PARM_DESC(statistics, "collect statistics on commands, queues (def=0)"); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 4220 | MODULE_PARM_DESC(strict, "stricter checks: reserved field in cdb (def=0)"); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4221 | MODULE_PARM_DESC(submit_queues, "support for block multi-queue (def=1)"); |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4222 | MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)"); |
| 4223 | 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] | 4224 | MODULE_PARM_DESC(unmap_max_blocks, "max # of blocks can be unmapped in one cmd (def=0xffffffff)"); |
| 4225 | MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=256)"); |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 4226 | MODULE_PARM_DESC(uuid_ctl, |
| 4227 | "1->use uuid for lu name, 0->don't, 2->all use same (def=0)"); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 4228 | 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] | 4229 | MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); |
| 4230 | 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] | 4231 | |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 4232 | #define SDEBUG_INFO_LEN 256 |
| 4233 | static char sdebug_info[SDEBUG_INFO_LEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4234 | |
| 4235 | static const char * scsi_debug_info(struct Scsi_Host * shp) |
| 4236 | { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4237 | int k; |
| 4238 | |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 4239 | k = scnprintf(sdebug_info, SDEBUG_INFO_LEN, "%s: version %s [%s]\n", |
| 4240 | my_name, SDEBUG_VERSION, sdebug_version_date); |
| 4241 | if (k >= (SDEBUG_INFO_LEN - 1)) |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4242 | return sdebug_info; |
Douglas Gilbert | 760f3b0 | 2016-05-06 00:40:27 -0400 | [diff] [blame] | 4243 | scnprintf(sdebug_info + k, SDEBUG_INFO_LEN - k, |
| 4244 | " dev_size_mb=%d, opts=0x%x, submit_queues=%d, %s=%d", |
| 4245 | sdebug_dev_size_mb, sdebug_opts, submit_queues, |
| 4246 | "statistics", (int)sdebug_statistics); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4247 | return sdebug_info; |
| 4248 | } |
| 4249 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4250 | /* 'echo <val> > /proc/scsi/scsi_debug/<host_id>' writes to opts */ |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 4251 | static int scsi_debug_write_info(struct Scsi_Host *host, char *buffer, |
| 4252 | int length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4253 | { |
Al Viro | c8ed555 | 2013-03-31 01:46:06 -0400 | [diff] [blame] | 4254 | char arr[16]; |
| 4255 | int opts; |
| 4256 | int minLen = length > 15 ? 15 : length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4257 | |
Al Viro | c8ed555 | 2013-03-31 01:46:06 -0400 | [diff] [blame] | 4258 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 4259 | return -EACCES; |
| 4260 | memcpy(arr, buffer, minLen); |
| 4261 | arr[minLen] = '\0'; |
| 4262 | if (1 != sscanf(arr, "%d", &opts)) |
| 4263 | return -EINVAL; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4264 | sdebug_opts = opts; |
| 4265 | sdebug_verbose = !!(SDEBUG_OPT_NOISE & opts); |
| 4266 | sdebug_any_injecting_opt = !!(SDEBUG_OPT_ALL_INJECTING & opts); |
| 4267 | if (sdebug_every_nth != 0) |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4268 | tweak_cmnd_count(); |
Al Viro | c8ed555 | 2013-03-31 01:46:06 -0400 | [diff] [blame] | 4269 | return length; |
| 4270 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4271 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4272 | /* Output seen with 'cat /proc/scsi/scsi_debug/<host_id>'. It will be the |
| 4273 | * same for each scsi_debug host (if more than one). Some of the counters |
| 4274 | * output are not atomics so might be inaccurate in a busy system. */ |
Al Viro | c8ed555 | 2013-03-31 01:46:06 -0400 | [diff] [blame] | 4275 | static int scsi_debug_show_info(struct seq_file *m, struct Scsi_Host *host) |
| 4276 | { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4277 | int f, j, l; |
| 4278 | struct sdebug_queue *sqp; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4279 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4280 | seq_printf(m, "scsi_debug adapter driver, version %s [%s]\n", |
| 4281 | SDEBUG_VERSION, sdebug_version_date); |
| 4282 | seq_printf(m, "num_tgts=%d, %ssize=%d MB, opts=0x%x, every_nth=%d\n", |
| 4283 | sdebug_num_tgts, "shared (ram) ", sdebug_dev_size_mb, |
| 4284 | sdebug_opts, sdebug_every_nth); |
| 4285 | seq_printf(m, "delay=%d, ndelay=%d, max_luns=%d, sector_size=%d %s\n", |
| 4286 | sdebug_jdelay, sdebug_ndelay, sdebug_max_luns, |
| 4287 | sdebug_sector_size, "bytes"); |
| 4288 | seq_printf(m, "cylinders=%d, heads=%d, sectors=%d, command aborts=%d\n", |
| 4289 | sdebug_cylinders_per, sdebug_heads, sdebug_sectors_per, |
| 4290 | num_aborts); |
| 4291 | seq_printf(m, "RESETs: device=%d, target=%d, bus=%d, host=%d\n", |
| 4292 | num_dev_resets, num_target_resets, num_bus_resets, |
| 4293 | num_host_resets); |
| 4294 | seq_printf(m, "dix_reads=%d, dix_writes=%d, dif_errors=%d\n", |
| 4295 | dix_reads, dix_writes, dif_errors); |
| 4296 | seq_printf(m, "usec_in_jiffy=%lu, %s=%d, mq_active=%d\n", |
| 4297 | TICK_NSEC / 1000, "statistics", sdebug_statistics, |
| 4298 | sdebug_mq_active); |
| 4299 | seq_printf(m, "cmnd_count=%d, completions=%d, %s=%d, a_tsf=%d\n", |
| 4300 | atomic_read(&sdebug_cmnd_count), |
| 4301 | atomic_read(&sdebug_completions), |
| 4302 | "miss_cpus", atomic_read(&sdebug_miss_cpus), |
| 4303 | atomic_read(&sdebug_a_tsf)); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4304 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4305 | seq_printf(m, "submit_queues=%d\n", submit_queues); |
| 4306 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; ++j, ++sqp) { |
| 4307 | seq_printf(m, " queue %d:\n", j); |
| 4308 | f = find_first_bit(sqp->in_use_bm, sdebug_max_queue); |
| 4309 | if (f != sdebug_max_queue) { |
| 4310 | l = find_last_bit(sqp->in_use_bm, sdebug_max_queue); |
| 4311 | seq_printf(m, " in_use_bm BUSY: %s: %d,%d\n", |
| 4312 | "first,last bits", f, l); |
| 4313 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4314 | } |
Al Viro | c8ed555 | 2013-03-31 01:46:06 -0400 | [diff] [blame] | 4315 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4316 | } |
| 4317 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4318 | static ssize_t delay_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4319 | { |
Douglas Gilbert | c220609 | 2016-04-25 12:16:31 -0400 | [diff] [blame] | 4320 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_jdelay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4321 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4322 | /* Returns -EBUSY if jdelay is being changed and commands are queued. The unit |
| 4323 | * of delay is jiffies. |
| 4324 | */ |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4325 | static ssize_t delay_store(struct device_driver *ddp, const char *buf, |
| 4326 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4327 | { |
Douglas Gilbert | c220609 | 2016-04-25 12:16:31 -0400 | [diff] [blame] | 4328 | int jdelay, res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4329 | |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 4330 | if (count > 0 && sscanf(buf, "%d", &jdelay) == 1) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4331 | res = count; |
Douglas Gilbert | c220609 | 2016-04-25 12:16:31 -0400 | [diff] [blame] | 4332 | if (sdebug_jdelay != jdelay) { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4333 | int j, k; |
| 4334 | struct sdebug_queue *sqp; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4335 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4336 | block_unblock_all_queues(true); |
| 4337 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; |
| 4338 | ++j, ++sqp) { |
| 4339 | k = find_first_bit(sqp->in_use_bm, |
| 4340 | sdebug_max_queue); |
| 4341 | if (k != sdebug_max_queue) { |
| 4342 | res = -EBUSY; /* queued commands */ |
| 4343 | break; |
| 4344 | } |
| 4345 | } |
| 4346 | if (res > 0) { |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 4347 | /* make sure sdebug_defer instances get |
| 4348 | * re-allocated for new delay variant */ |
| 4349 | free_all_queued(); |
Douglas Gilbert | c220609 | 2016-04-25 12:16:31 -0400 | [diff] [blame] | 4350 | sdebug_jdelay = jdelay; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4351 | sdebug_ndelay = 0; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4352 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4353 | block_unblock_all_queues(false); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4354 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4355 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4356 | } |
| 4357 | return -EINVAL; |
| 4358 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4359 | static DRIVER_ATTR_RW(delay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4360 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4361 | static ssize_t ndelay_show(struct device_driver *ddp, char *buf) |
| 4362 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4363 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_ndelay); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4364 | } |
| 4365 | /* Returns -EBUSY if ndelay is being changed and commands are queued */ |
Douglas Gilbert | c220609 | 2016-04-25 12:16:31 -0400 | [diff] [blame] | 4366 | /* If > 0 and accepted then sdebug_jdelay is set to JDELAY_OVERRIDDEN */ |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4367 | static ssize_t ndelay_store(struct device_driver *ddp, const char *buf, |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 4368 | size_t count) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4369 | { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4370 | int ndelay, res; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4371 | |
| 4372 | if ((count > 0) && (1 == sscanf(buf, "%d", &ndelay)) && |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4373 | (ndelay >= 0) && (ndelay < (1000 * 1000 * 1000))) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4374 | res = count; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4375 | if (sdebug_ndelay != ndelay) { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4376 | int j, k; |
| 4377 | struct sdebug_queue *sqp; |
| 4378 | |
| 4379 | block_unblock_all_queues(true); |
| 4380 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; |
| 4381 | ++j, ++sqp) { |
| 4382 | k = find_first_bit(sqp->in_use_bm, |
| 4383 | sdebug_max_queue); |
| 4384 | if (k != sdebug_max_queue) { |
| 4385 | res = -EBUSY; /* queued commands */ |
| 4386 | break; |
| 4387 | } |
| 4388 | } |
| 4389 | if (res > 0) { |
Douglas Gilbert | a10bc12 | 2016-04-25 12:16:32 -0400 | [diff] [blame] | 4390 | /* make sure sdebug_defer instances get |
| 4391 | * re-allocated for new delay variant */ |
| 4392 | free_all_queued(); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4393 | sdebug_ndelay = ndelay; |
Douglas Gilbert | c220609 | 2016-04-25 12:16:31 -0400 | [diff] [blame] | 4394 | sdebug_jdelay = ndelay ? JDELAY_OVERRIDDEN |
| 4395 | : DEF_JDELAY; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4396 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4397 | block_unblock_all_queues(false); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4398 | } |
| 4399 | return res; |
| 4400 | } |
| 4401 | return -EINVAL; |
| 4402 | } |
| 4403 | static DRIVER_ATTR_RW(ndelay); |
| 4404 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4405 | static ssize_t opts_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4406 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4407 | return scnprintf(buf, PAGE_SIZE, "0x%x\n", sdebug_opts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4408 | } |
| 4409 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4410 | static ssize_t opts_store(struct device_driver *ddp, const char *buf, |
| 4411 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4412 | { |
| 4413 | int opts; |
| 4414 | char work[20]; |
| 4415 | |
| 4416 | if (1 == sscanf(buf, "%10s", work)) { |
Rasmus Villemoes | 48a9687 | 2014-10-13 15:54:44 -0700 | [diff] [blame] | 4417 | if (0 == strncasecmp(work,"0x", 2)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4418 | if (1 == sscanf(&work[2], "%x", &opts)) |
| 4419 | goto opts_done; |
| 4420 | } else { |
| 4421 | if (1 == sscanf(work, "%d", &opts)) |
| 4422 | goto opts_done; |
| 4423 | } |
| 4424 | } |
| 4425 | return -EINVAL; |
| 4426 | opts_done: |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4427 | sdebug_opts = opts; |
| 4428 | sdebug_verbose = !!(SDEBUG_OPT_NOISE & opts); |
| 4429 | sdebug_any_injecting_opt = !!(SDEBUG_OPT_ALL_INJECTING & opts); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4430 | tweak_cmnd_count(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4431 | return count; |
| 4432 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4433 | static DRIVER_ATTR_RW(opts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4434 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4435 | static ssize_t ptype_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4436 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4437 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_ptype); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4438 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4439 | static ssize_t ptype_store(struct device_driver *ddp, const char *buf, |
| 4440 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4441 | { |
| 4442 | int n; |
| 4443 | |
| 4444 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4445 | sdebug_ptype = n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4446 | return count; |
| 4447 | } |
| 4448 | return -EINVAL; |
| 4449 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4450 | static DRIVER_ATTR_RW(ptype); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4451 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4452 | static ssize_t dsense_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4453 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4454 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_dsense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4455 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4456 | static ssize_t dsense_store(struct device_driver *ddp, const char *buf, |
| 4457 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4458 | { |
| 4459 | int n; |
| 4460 | |
| 4461 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4462 | sdebug_dsense = n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4463 | return count; |
| 4464 | } |
| 4465 | return -EINVAL; |
| 4466 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4467 | static DRIVER_ATTR_RW(dsense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4468 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4469 | static ssize_t fake_rw_show(struct device_driver *ddp, char *buf) |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4470 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4471 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_fake_rw); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4472 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4473 | static ssize_t fake_rw_store(struct device_driver *ddp, const char *buf, |
| 4474 | size_t count) |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4475 | { |
| 4476 | int n; |
| 4477 | |
| 4478 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4479 | n = (n > 0); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4480 | sdebug_fake_rw = (sdebug_fake_rw > 0); |
| 4481 | if (sdebug_fake_rw != n) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4482 | if ((0 == n) && (NULL == fake_storep)) { |
| 4483 | unsigned long sz = |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4484 | (unsigned long)sdebug_dev_size_mb * |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4485 | 1048576; |
| 4486 | |
| 4487 | fake_storep = vmalloc(sz); |
| 4488 | if (NULL == fake_storep) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 4489 | pr_err("out of memory, 9\n"); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4490 | return -ENOMEM; |
| 4491 | } |
| 4492 | memset(fake_storep, 0, sz); |
| 4493 | } |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4494 | sdebug_fake_rw = n; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4495 | } |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4496 | return count; |
| 4497 | } |
| 4498 | return -EINVAL; |
| 4499 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4500 | static DRIVER_ATTR_RW(fake_rw); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4501 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4502 | 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] | 4503 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4504 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_no_lun_0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4505 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4506 | static ssize_t no_lun_0_store(struct device_driver *ddp, const char *buf, |
| 4507 | size_t count) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4508 | { |
| 4509 | int n; |
| 4510 | |
| 4511 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4512 | sdebug_no_lun_0 = n; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4513 | return count; |
| 4514 | } |
| 4515 | return -EINVAL; |
| 4516 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4517 | static DRIVER_ATTR_RW(no_lun_0); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4518 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4519 | static ssize_t num_tgts_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4520 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4521 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_num_tgts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4522 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4523 | static ssize_t num_tgts_store(struct device_driver *ddp, const char *buf, |
| 4524 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4525 | { |
| 4526 | int n; |
| 4527 | |
| 4528 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4529 | sdebug_num_tgts = n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4530 | sdebug_max_tgts_luns(); |
| 4531 | return count; |
| 4532 | } |
| 4533 | return -EINVAL; |
| 4534 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4535 | static DRIVER_ATTR_RW(num_tgts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4536 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4537 | 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] | 4538 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4539 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_dev_size_mb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4540 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4541 | static DRIVER_ATTR_RO(dev_size_mb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4542 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4543 | static ssize_t num_parts_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4544 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4545 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_num_parts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4546 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4547 | static DRIVER_ATTR_RO(num_parts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4548 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4549 | static ssize_t every_nth_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4550 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4551 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_every_nth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4552 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4553 | static ssize_t every_nth_store(struct device_driver *ddp, const char *buf, |
| 4554 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4555 | { |
| 4556 | int nth; |
| 4557 | |
| 4558 | if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4559 | sdebug_every_nth = nth; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4560 | if (nth && !sdebug_statistics) { |
| 4561 | pr_info("every_nth needs statistics=1, set it\n"); |
| 4562 | sdebug_statistics = true; |
| 4563 | } |
| 4564 | tweak_cmnd_count(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4565 | return count; |
| 4566 | } |
| 4567 | return -EINVAL; |
| 4568 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4569 | static DRIVER_ATTR_RW(every_nth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4570 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4571 | static ssize_t max_luns_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4572 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4573 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_max_luns); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4574 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4575 | static ssize_t max_luns_store(struct device_driver *ddp, const char *buf, |
| 4576 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4577 | { |
| 4578 | int n; |
Ewan D. Milne | 19c8ead | 2014-12-04 11:49:27 -0500 | [diff] [blame] | 4579 | bool changed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4580 | |
| 4581 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
Douglas Gilbert | 8d039e2 | 2016-04-30 22:44:43 -0400 | [diff] [blame] | 4582 | if (n > 256) { |
| 4583 | pr_warn("max_luns can be no more than 256\n"); |
| 4584 | return -EINVAL; |
| 4585 | } |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4586 | changed = (sdebug_max_luns != n); |
| 4587 | sdebug_max_luns = n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4588 | sdebug_max_tgts_luns(); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4589 | if (changed && (sdebug_scsi_level >= 5)) { /* >= SPC-3 */ |
Ewan D. Milne | 19c8ead | 2014-12-04 11:49:27 -0500 | [diff] [blame] | 4590 | struct sdebug_host_info *sdhp; |
| 4591 | struct sdebug_dev_info *dp; |
| 4592 | |
| 4593 | spin_lock(&sdebug_host_list_lock); |
| 4594 | list_for_each_entry(sdhp, &sdebug_host_list, |
| 4595 | host_list) { |
| 4596 | list_for_each_entry(dp, &sdhp->dev_info_list, |
| 4597 | dev_list) { |
| 4598 | set_bit(SDEBUG_UA_LUNS_CHANGED, |
| 4599 | dp->uas_bm); |
| 4600 | } |
| 4601 | } |
| 4602 | spin_unlock(&sdebug_host_list_lock); |
| 4603 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4604 | return count; |
| 4605 | } |
| 4606 | return -EINVAL; |
| 4607 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4608 | static DRIVER_ATTR_RW(max_luns); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4609 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4610 | static ssize_t max_queue_show(struct device_driver *ddp, char *buf) |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4611 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4612 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_max_queue); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4613 | } |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4614 | /* N.B. max_queue can be changed while there are queued commands. In flight |
| 4615 | * commands beyond the new max_queue will be completed. */ |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4616 | static ssize_t max_queue_store(struct device_driver *ddp, const char *buf, |
| 4617 | size_t count) |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4618 | { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4619 | int j, n, k, a; |
| 4620 | struct sdebug_queue *sqp; |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4621 | |
| 4622 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n > 0) && |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4623 | (n <= SDEBUG_CANQUEUE)) { |
| 4624 | block_unblock_all_queues(true); |
| 4625 | k = 0; |
| 4626 | for (j = 0, sqp = sdebug_q_arr; j < submit_queues; |
| 4627 | ++j, ++sqp) { |
| 4628 | a = find_last_bit(sqp->in_use_bm, SDEBUG_CANQUEUE); |
| 4629 | if (a > k) |
| 4630 | k = a; |
| 4631 | } |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4632 | sdebug_max_queue = n; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4633 | if (k == SDEBUG_CANQUEUE) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4634 | atomic_set(&retired_max_queue, 0); |
| 4635 | else if (k >= n) |
| 4636 | atomic_set(&retired_max_queue, k + 1); |
| 4637 | else |
| 4638 | atomic_set(&retired_max_queue, 0); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4639 | block_unblock_all_queues(false); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4640 | return count; |
| 4641 | } |
| 4642 | return -EINVAL; |
| 4643 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4644 | static DRIVER_ATTR_RW(max_queue); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4645 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4646 | static ssize_t no_uld_show(struct device_driver *ddp, char *buf) |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4647 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4648 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_no_uld); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4649 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4650 | static DRIVER_ATTR_RO(no_uld); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 4651 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4652 | static ssize_t scsi_level_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4653 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4654 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_scsi_level); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4655 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4656 | static DRIVER_ATTR_RO(scsi_level); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4657 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4658 | static ssize_t virtual_gb_show(struct device_driver *ddp, char *buf) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4659 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4660 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_virtual_gb); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4661 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4662 | static ssize_t virtual_gb_store(struct device_driver *ddp, const char *buf, |
| 4663 | size_t count) |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4664 | { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 4665 | int n; |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 4666 | bool changed; |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4667 | |
| 4668 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4669 | changed = (sdebug_virtual_gb != n); |
| 4670 | sdebug_virtual_gb = n; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 4671 | sdebug_capacity = get_sdebug_capacity(); |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 4672 | if (changed) { |
| 4673 | struct sdebug_host_info *sdhp; |
| 4674 | struct sdebug_dev_info *dp; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 4675 | |
Ewan D. Milne | 4bc6b63 | 2014-12-04 11:49:26 -0500 | [diff] [blame] | 4676 | spin_lock(&sdebug_host_list_lock); |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 4677 | list_for_each_entry(sdhp, &sdebug_host_list, |
| 4678 | host_list) { |
| 4679 | list_for_each_entry(dp, &sdhp->dev_info_list, |
| 4680 | dev_list) { |
| 4681 | set_bit(SDEBUG_UA_CAPACITY_CHANGED, |
| 4682 | dp->uas_bm); |
| 4683 | } |
| 4684 | } |
Ewan D. Milne | 4bc6b63 | 2014-12-04 11:49:26 -0500 | [diff] [blame] | 4685 | spin_unlock(&sdebug_host_list_lock); |
Douglas Gilbert | 0d01c5d | 2014-11-24 20:27:51 -0500 | [diff] [blame] | 4686 | } |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4687 | return count; |
| 4688 | } |
| 4689 | return -EINVAL; |
| 4690 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4691 | static DRIVER_ATTR_RW(virtual_gb); |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 4692 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4693 | static ssize_t add_host_show(struct device_driver *ddp, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4694 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4695 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_add_host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4696 | } |
| 4697 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 4698 | static int sdebug_add_adapter(void); |
| 4699 | static void sdebug_remove_adapter(void); |
| 4700 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4701 | static ssize_t add_host_store(struct device_driver *ddp, const char *buf, |
| 4702 | size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4703 | { |
FUJITA Tomonori | f3df41c | 2008-03-20 11:09:15 +0900 | [diff] [blame] | 4704 | int delta_hosts; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4705 | |
FUJITA Tomonori | f3df41c | 2008-03-20 11:09:15 +0900 | [diff] [blame] | 4706 | if (sscanf(buf, "%d", &delta_hosts) != 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4707 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4708 | if (delta_hosts > 0) { |
| 4709 | do { |
| 4710 | sdebug_add_adapter(); |
| 4711 | } while (--delta_hosts); |
| 4712 | } else if (delta_hosts < 0) { |
| 4713 | do { |
| 4714 | sdebug_remove_adapter(); |
| 4715 | } while (++delta_hosts); |
| 4716 | } |
| 4717 | return count; |
| 4718 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4719 | static DRIVER_ATTR_RW(add_host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4720 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4721 | 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] | 4722 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4723 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_vpd_use_hostno); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4724 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4725 | static ssize_t vpd_use_hostno_store(struct device_driver *ddp, const char *buf, |
| 4726 | size_t count) |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4727 | { |
| 4728 | int n; |
| 4729 | |
| 4730 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4731 | sdebug_vpd_use_hostno = n; |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4732 | return count; |
| 4733 | } |
| 4734 | return -EINVAL; |
| 4735 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4736 | static DRIVER_ATTR_RW(vpd_use_hostno); |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4737 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4738 | static ssize_t statistics_show(struct device_driver *ddp, char *buf) |
| 4739 | { |
| 4740 | return scnprintf(buf, PAGE_SIZE, "%d\n", (int)sdebug_statistics); |
| 4741 | } |
| 4742 | static ssize_t statistics_store(struct device_driver *ddp, const char *buf, |
| 4743 | size_t count) |
| 4744 | { |
| 4745 | int n; |
| 4746 | |
| 4747 | if ((count > 0) && (sscanf(buf, "%d", &n) == 1) && (n >= 0)) { |
| 4748 | if (n > 0) |
| 4749 | sdebug_statistics = true; |
| 4750 | else { |
| 4751 | clear_queue_stats(); |
| 4752 | sdebug_statistics = false; |
| 4753 | } |
| 4754 | return count; |
| 4755 | } |
| 4756 | return -EINVAL; |
| 4757 | } |
| 4758 | static DRIVER_ATTR_RW(statistics); |
| 4759 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4760 | 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] | 4761 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4762 | return scnprintf(buf, PAGE_SIZE, "%u\n", sdebug_sector_size); |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 4763 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4764 | static DRIVER_ATTR_RO(sector_size); |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 4765 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4766 | static ssize_t submit_queues_show(struct device_driver *ddp, char *buf) |
| 4767 | { |
| 4768 | return scnprintf(buf, PAGE_SIZE, "%d\n", submit_queues); |
| 4769 | } |
| 4770 | static DRIVER_ATTR_RO(submit_queues); |
| 4771 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4772 | static ssize_t dix_show(struct device_driver *ddp, char *buf) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4773 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4774 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_dix); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4775 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4776 | static DRIVER_ATTR_RO(dix); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4777 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4778 | static ssize_t dif_show(struct device_driver *ddp, char *buf) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4779 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4780 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_dif); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4781 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4782 | static DRIVER_ATTR_RO(dif); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4783 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4784 | static ssize_t guard_show(struct device_driver *ddp, char *buf) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4785 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4786 | return scnprintf(buf, PAGE_SIZE, "%u\n", sdebug_guard); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4787 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4788 | static DRIVER_ATTR_RO(guard); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4789 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4790 | static ssize_t ato_show(struct device_driver *ddp, char *buf) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4791 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4792 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_ato); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4793 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4794 | static DRIVER_ATTR_RO(ato); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4795 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4796 | static ssize_t map_show(struct device_driver *ddp, char *buf) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4797 | { |
| 4798 | ssize_t count; |
| 4799 | |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 4800 | if (!scsi_debug_lbp()) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4801 | return scnprintf(buf, PAGE_SIZE, "0-%u\n", |
| 4802 | sdebug_store_sectors); |
| 4803 | |
Tejun Heo | c7badc9 | 2015-02-13 14:37:51 -0800 | [diff] [blame] | 4804 | count = scnprintf(buf, PAGE_SIZE - 1, "%*pbl", |
| 4805 | (int)map_size, map_storep); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4806 | buf[count++] = '\n'; |
Tejun Heo | c7badc9 | 2015-02-13 14:37:51 -0800 | [diff] [blame] | 4807 | buf[count] = '\0'; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4808 | |
| 4809 | return count; |
| 4810 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4811 | static DRIVER_ATTR_RO(map); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 4812 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4813 | static ssize_t removable_show(struct device_driver *ddp, char *buf) |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 4814 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4815 | return scnprintf(buf, PAGE_SIZE, "%d\n", sdebug_removable ? 1 : 0); |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 4816 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4817 | static ssize_t removable_store(struct device_driver *ddp, const char *buf, |
| 4818 | size_t count) |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 4819 | { |
| 4820 | int n; |
| 4821 | |
| 4822 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4823 | sdebug_removable = (n > 0); |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 4824 | return count; |
| 4825 | } |
| 4826 | return -EINVAL; |
| 4827 | } |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4828 | static DRIVER_ATTR_RW(removable); |
Martin Pitt | d986788 | 2012-09-06 12:04:33 +0200 | [diff] [blame] | 4829 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4830 | static ssize_t host_lock_show(struct device_driver *ddp, char *buf) |
| 4831 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4832 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!sdebug_host_lock); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4833 | } |
Douglas Gilbert | 185dd23 | 2016-04-25 12:16:29 -0400 | [diff] [blame] | 4834 | /* N.B. sdebug_host_lock does nothing, kept for backward compatibility */ |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4835 | static ssize_t host_lock_store(struct device_driver *ddp, const char *buf, |
| 4836 | size_t count) |
| 4837 | { |
Douglas Gilbert | 185dd23 | 2016-04-25 12:16:29 -0400 | [diff] [blame] | 4838 | int n; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4839 | |
| 4840 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
Douglas Gilbert | 185dd23 | 2016-04-25 12:16:29 -0400 | [diff] [blame] | 4841 | sdebug_host_lock = (n > 0); |
| 4842 | return count; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4843 | } |
| 4844 | return -EINVAL; |
| 4845 | } |
| 4846 | static DRIVER_ATTR_RW(host_lock); |
| 4847 | |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 4848 | static ssize_t strict_show(struct device_driver *ddp, char *buf) |
| 4849 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4850 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!sdebug_strict); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 4851 | } |
| 4852 | static ssize_t strict_store(struct device_driver *ddp, const char *buf, |
| 4853 | size_t count) |
| 4854 | { |
| 4855 | int n; |
| 4856 | |
| 4857 | if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4858 | sdebug_strict = (n > 0); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 4859 | return count; |
| 4860 | } |
| 4861 | return -EINVAL; |
| 4862 | } |
| 4863 | static DRIVER_ATTR_RW(strict); |
| 4864 | |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 4865 | static ssize_t uuid_ctl_show(struct device_driver *ddp, char *buf) |
| 4866 | { |
| 4867 | return scnprintf(buf, PAGE_SIZE, "%d\n", !!sdebug_uuid_ctl); |
| 4868 | } |
| 4869 | static DRIVER_ATTR_RO(uuid_ctl); |
| 4870 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4871 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4872 | /* Note: The following array creates attribute files in the |
Douglas Gilbert | 2318391 | 2006-09-16 20:30:47 -0400 | [diff] [blame] | 4873 | /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these |
| 4874 | files (over those found in the /sys/module/scsi_debug/parameters |
| 4875 | directory) is that auxiliary actions can be triggered when an attribute |
| 4876 | is changed. For example see: sdebug_add_host_store() above. |
| 4877 | */ |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 4878 | |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4879 | static struct attribute *sdebug_drv_attrs[] = { |
| 4880 | &driver_attr_delay.attr, |
| 4881 | &driver_attr_opts.attr, |
| 4882 | &driver_attr_ptype.attr, |
| 4883 | &driver_attr_dsense.attr, |
| 4884 | &driver_attr_fake_rw.attr, |
| 4885 | &driver_attr_no_lun_0.attr, |
| 4886 | &driver_attr_num_tgts.attr, |
| 4887 | &driver_attr_dev_size_mb.attr, |
| 4888 | &driver_attr_num_parts.attr, |
| 4889 | &driver_attr_every_nth.attr, |
| 4890 | &driver_attr_max_luns.attr, |
| 4891 | &driver_attr_max_queue.attr, |
| 4892 | &driver_attr_no_uld.attr, |
| 4893 | &driver_attr_scsi_level.attr, |
| 4894 | &driver_attr_virtual_gb.attr, |
| 4895 | &driver_attr_add_host.attr, |
| 4896 | &driver_attr_vpd_use_hostno.attr, |
| 4897 | &driver_attr_sector_size.attr, |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4898 | &driver_attr_statistics.attr, |
| 4899 | &driver_attr_submit_queues.attr, |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4900 | &driver_attr_dix.attr, |
| 4901 | &driver_attr_dif.attr, |
| 4902 | &driver_attr_guard.attr, |
| 4903 | &driver_attr_ato.attr, |
| 4904 | &driver_attr_map.attr, |
| 4905 | &driver_attr_removable.attr, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4906 | &driver_attr_host_lock.attr, |
| 4907 | &driver_attr_ndelay.attr, |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 4908 | &driver_attr_strict.attr, |
Douglas Gilbert | 09ba24c | 2016-05-06 00:40:28 -0400 | [diff] [blame] | 4909 | &driver_attr_uuid_ctl.attr, |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 4910 | NULL, |
| 4911 | }; |
| 4912 | ATTRIBUTE_GROUPS(sdebug_drv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4913 | |
Akinobu Mita | 11ddcec | 2014-02-26 22:56:59 +0900 | [diff] [blame] | 4914 | static struct device *pseudo_primary; |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 4915 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4916 | static int __init scsi_debug_init(void) |
| 4917 | { |
FUJITA Tomonori | 5f2578e | 2008-03-30 00:59:57 +0900 | [diff] [blame] | 4918 | unsigned long sz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4919 | int host_to_add; |
| 4920 | int k; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 4921 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4922 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4923 | atomic_set(&retired_max_queue, 0); |
| 4924 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4925 | if (sdebug_ndelay >= 1000 * 1000 * 1000) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 4926 | pr_warn("ndelay must be less than 1 second, ignored\n"); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4927 | sdebug_ndelay = 0; |
| 4928 | } else if (sdebug_ndelay > 0) |
Douglas Gilbert | c220609 | 2016-04-25 12:16:31 -0400 | [diff] [blame] | 4929 | sdebug_jdelay = JDELAY_OVERRIDDEN; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 4930 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4931 | switch (sdebug_sector_size) { |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 4932 | case 512: |
| 4933 | case 1024: |
| 4934 | case 2048: |
| 4935 | case 4096: |
| 4936 | break; |
| 4937 | default: |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4938 | pr_err("invalid sector_size %d\n", sdebug_sector_size); |
Martin K. Petersen | 597136a | 2008-06-05 00:12:59 -0400 | [diff] [blame] | 4939 | return -EINVAL; |
| 4940 | } |
| 4941 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4942 | switch (sdebug_dif) { |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 4943 | case T10_PI_TYPE0_PROTECTION: |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 4944 | break; |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 4945 | case T10_PI_TYPE1_PROTECTION: |
| 4946 | case T10_PI_TYPE2_PROTECTION: |
| 4947 | case T10_PI_TYPE3_PROTECTION: |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 4948 | have_dif_prot = true; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4949 | break; |
| 4950 | |
| 4951 | default: |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 4952 | pr_err("dif must be 0, 1, 2 or 3\n"); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4953 | return -EINVAL; |
| 4954 | } |
| 4955 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4956 | if (sdebug_guard > 1) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 4957 | pr_err("guard must be 0 or 1\n"); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4958 | return -EINVAL; |
| 4959 | } |
| 4960 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4961 | if (sdebug_ato > 1) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 4962 | pr_err("ato must be 0 or 1\n"); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 4963 | return -EINVAL; |
| 4964 | } |
| 4965 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4966 | if (sdebug_physblk_exp > 15) { |
| 4967 | pr_err("invalid physblk_exp %u\n", sdebug_physblk_exp); |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 4968 | return -EINVAL; |
| 4969 | } |
Douglas Gilbert | 8d039e2 | 2016-04-30 22:44:43 -0400 | [diff] [blame] | 4970 | if (sdebug_max_luns > 256) { |
| 4971 | pr_warn("max_luns can be no more than 256, use default\n"); |
| 4972 | sdebug_max_luns = DEF_MAX_LUNS; |
| 4973 | } |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 4974 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4975 | if (sdebug_lowest_aligned > 0x3fff) { |
| 4976 | pr_err("lowest_aligned too big: %u\n", sdebug_lowest_aligned); |
Martin K. Petersen | ea61fca | 2009-05-15 00:40:33 -0400 | [diff] [blame] | 4977 | return -EINVAL; |
| 4978 | } |
| 4979 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 4980 | if (submit_queues < 1) { |
| 4981 | pr_err("submit_queues must be 1 or more\n"); |
| 4982 | return -EINVAL; |
| 4983 | } |
| 4984 | sdebug_q_arr = kcalloc(submit_queues, sizeof(struct sdebug_queue), |
| 4985 | GFP_KERNEL); |
| 4986 | if (sdebug_q_arr == NULL) |
| 4987 | return -ENOMEM; |
| 4988 | for (k = 0; k < submit_queues; ++k) |
| 4989 | spin_lock_init(&sdebug_q_arr[k].qc_lock); |
| 4990 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 4991 | if (sdebug_dev_size_mb < 1) |
| 4992 | sdebug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ |
| 4993 | sz = (unsigned long)sdebug_dev_size_mb * 1048576; |
| 4994 | sdebug_store_sectors = sz / sdebug_sector_size; |
FUJITA Tomonori | 2889887 | 2008-03-30 00:59:55 +0900 | [diff] [blame] | 4995 | sdebug_capacity = get_sdebug_capacity(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4996 | |
| 4997 | /* play around with geometry, don't waste too much on track 0 */ |
| 4998 | sdebug_heads = 8; |
| 4999 | sdebug_sectors_per = 32; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5000 | if (sdebug_dev_size_mb >= 256) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5001 | sdebug_heads = 64; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5002 | else if (sdebug_dev_size_mb >= 16) |
Andy Shevchenko | fa785f0 | 2015-11-26 20:22:50 +0200 | [diff] [blame] | 5003 | sdebug_heads = 32; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5004 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 5005 | (sdebug_sectors_per * sdebug_heads); |
| 5006 | if (sdebug_cylinders_per >= 1024) { |
| 5007 | /* other LLDs do this; implies >= 1GB ram disk ... */ |
| 5008 | sdebug_heads = 255; |
| 5009 | sdebug_sectors_per = 63; |
| 5010 | sdebug_cylinders_per = (unsigned long)sdebug_capacity / |
| 5011 | (sdebug_sectors_per * sdebug_heads); |
| 5012 | } |
| 5013 | |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 5014 | if (sdebug_fake_rw == 0) { |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5015 | fake_storep = vmalloc(sz); |
| 5016 | if (NULL == fake_storep) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5017 | pr_err("out of memory, 1\n"); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5018 | ret = -ENOMEM; |
| 5019 | goto free_q_arr; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5020 | } |
| 5021 | memset(fake_storep, 0, sz); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5022 | if (sdebug_num_parts > 0) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5023 | sdebug_build_parts(fake_storep, sz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5024 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5025 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5026 | if (sdebug_dix) { |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5027 | int dif_size; |
| 5028 | |
Christoph Hellwig | 6ebf105 | 2016-09-11 19:35:39 +0200 | [diff] [blame] | 5029 | dif_size = sdebug_store_sectors * sizeof(struct t10_pi_tuple); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5030 | dif_storep = vmalloc(dif_size); |
| 5031 | |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5032 | pr_err("dif_storep %u bytes @ %p\n", dif_size, dif_storep); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5033 | |
| 5034 | if (dif_storep == NULL) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5035 | pr_err("out of mem. (DIX)\n"); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5036 | ret = -ENOMEM; |
| 5037 | goto free_vm; |
| 5038 | } |
| 5039 | |
| 5040 | memset(dif_storep, 0xff, dif_size); |
| 5041 | } |
| 5042 | |
Martin K. Petersen | 5b94e23 | 2011-03-08 02:08:11 -0500 | [diff] [blame] | 5043 | /* Logical Block Provisioning */ |
| 5044 | if (scsi_debug_lbp()) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5045 | sdebug_unmap_max_blocks = |
| 5046 | clamp(sdebug_unmap_max_blocks, 0U, 0xffffffffU); |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 5047 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5048 | sdebug_unmap_max_desc = |
| 5049 | clamp(sdebug_unmap_max_desc, 0U, 256U); |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 5050 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5051 | sdebug_unmap_granularity = |
| 5052 | clamp(sdebug_unmap_granularity, 1U, 0xffffffffU); |
Martin K. Petersen | 6014759 | 2010-08-19 11:49:00 -0400 | [diff] [blame] | 5053 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5054 | if (sdebug_unmap_alignment && |
| 5055 | sdebug_unmap_granularity <= |
| 5056 | sdebug_unmap_alignment) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5057 | pr_err("ERR: unmap_granularity <= unmap_alignment\n"); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5058 | ret = -EINVAL; |
| 5059 | goto free_vm; |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 5060 | } |
| 5061 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 5062 | map_size = lba_to_map_index(sdebug_store_sectors - 1) + 1; |
| 5063 | map_storep = vmalloc(BITS_TO_LONGS(map_size) * sizeof(long)); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 5064 | |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5065 | pr_info("%lu provisioning blocks\n", map_size); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 5066 | |
| 5067 | if (map_storep == NULL) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5068 | pr_err("out of mem. (MAP)\n"); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 5069 | ret = -ENOMEM; |
| 5070 | goto free_vm; |
| 5071 | } |
| 5072 | |
Akinobu Mita | b90ebc3 | 2013-04-16 22:11:58 +0900 | [diff] [blame] | 5073 | bitmap_zero(map_storep, map_size); |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 5074 | |
| 5075 | /* Map first 1KB for partition table */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5076 | if (sdebug_num_parts) |
Martin K. Petersen | 44d9269 | 2009-10-15 14:45:27 -0400 | [diff] [blame] | 5077 | map_region(0, 2); |
| 5078 | } |
| 5079 | |
Nicholas Bellinger | 9b90677 | 2010-09-06 17:24:28 -0700 | [diff] [blame] | 5080 | pseudo_primary = root_device_register("pseudo_0"); |
| 5081 | if (IS_ERR(pseudo_primary)) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5082 | pr_warn("root_device_register() error\n"); |
Nicholas Bellinger | 9b90677 | 2010-09-06 17:24:28 -0700 | [diff] [blame] | 5083 | ret = PTR_ERR(pseudo_primary); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 5084 | goto free_vm; |
| 5085 | } |
| 5086 | ret = bus_register(&pseudo_lld_bus); |
| 5087 | if (ret < 0) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5088 | pr_warn("bus_register error: %d\n", ret); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 5089 | goto dev_unreg; |
| 5090 | } |
| 5091 | ret = driver_register(&sdebug_driverfs_driver); |
| 5092 | if (ret < 0) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5093 | pr_warn("driver_register error: %d\n", ret); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 5094 | goto bus_unreg; |
| 5095 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5096 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5097 | host_to_add = sdebug_add_host; |
| 5098 | sdebug_add_host = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5099 | |
| 5100 | for (k = 0; k < host_to_add; k++) { |
| 5101 | if (sdebug_add_adapter()) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5102 | pr_err("sdebug_add_adapter failed k=%d\n", k); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5103 | break; |
| 5104 | } |
| 5105 | } |
| 5106 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5107 | if (sdebug_verbose) |
| 5108 | pr_info("built %d host(s)\n", sdebug_add_host); |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5110 | return 0; |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 5111 | |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 5112 | bus_unreg: |
| 5113 | bus_unregister(&pseudo_lld_bus); |
| 5114 | dev_unreg: |
Nicholas Bellinger | 9b90677 | 2010-09-06 17:24:28 -0700 | [diff] [blame] | 5115 | root_device_unregister(pseudo_primary); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 5116 | free_vm: |
Tomas Winkler | de232af | 2015-07-28 16:54:22 +0300 | [diff] [blame] | 5117 | vfree(map_storep); |
| 5118 | vfree(dif_storep); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 5119 | vfree(fake_storep); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5120 | free_q_arr: |
| 5121 | kfree(sdebug_q_arr); |
Randy Dunlap | 6ecaff7 | 2006-07-11 20:53:22 -0700 | [diff] [blame] | 5122 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5123 | } |
| 5124 | |
| 5125 | static void __exit scsi_debug_exit(void) |
| 5126 | { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5127 | int k = sdebug_add_host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5128 | |
| 5129 | stop_all_queued(); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5130 | free_all_queued(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5131 | for (; k; k--) |
| 5132 | sdebug_remove_adapter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5133 | driver_unregister(&sdebug_driverfs_driver); |
| 5134 | bus_unregister(&pseudo_lld_bus); |
Nicholas Bellinger | 9b90677 | 2010-09-06 17:24:28 -0700 | [diff] [blame] | 5135 | root_device_unregister(pseudo_primary); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5136 | |
Tomas Winkler | de232af | 2015-07-28 16:54:22 +0300 | [diff] [blame] | 5137 | vfree(dif_storep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5138 | vfree(fake_storep); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5139 | kfree(sdebug_q_arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5140 | } |
| 5141 | |
| 5142 | device_initcall(scsi_debug_init); |
| 5143 | module_exit(scsi_debug_exit); |
| 5144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5145 | static void sdebug_release_adapter(struct device * dev) |
| 5146 | { |
| 5147 | struct sdebug_host_info *sdbg_host; |
| 5148 | |
| 5149 | sdbg_host = to_sdebug_host(dev); |
| 5150 | kfree(sdbg_host); |
| 5151 | } |
| 5152 | |
| 5153 | static int sdebug_add_adapter(void) |
| 5154 | { |
| 5155 | int k, devs_per_host; |
| 5156 | int error = 0; |
| 5157 | struct sdebug_host_info *sdbg_host; |
FUJITA Tomonori | 8b40228 | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 5158 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5159 | |
Douglas Gilbert | c65b144 | 2006-06-06 00:11:24 -0400 | [diff] [blame] | 5160 | sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5161 | if (NULL == sdbg_host) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5162 | pr_err("out of memory at line %d\n", __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5163 | return -ENOMEM; |
| 5164 | } |
| 5165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5166 | INIT_LIST_HEAD(&sdbg_host->dev_info_list); |
| 5167 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5168 | devs_per_host = sdebug_num_tgts * sdebug_max_luns; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5169 | for (k = 0; k < devs_per_host; k++) { |
FUJITA Tomonori | 5cb2fc0 | 2008-03-20 11:09:16 +0900 | [diff] [blame] | 5170 | sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); |
| 5171 | if (!sdbg_devinfo) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5172 | pr_err("out of memory at line %d\n", __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5173 | error = -ENOMEM; |
| 5174 | goto clean; |
| 5175 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5176 | } |
| 5177 | |
| 5178 | spin_lock(&sdebug_host_list_lock); |
| 5179 | list_add_tail(&sdbg_host->host_list, &sdebug_host_list); |
| 5180 | spin_unlock(&sdebug_host_list_lock); |
| 5181 | |
| 5182 | sdbg_host->dev.bus = &pseudo_lld_bus; |
Nicholas Bellinger | 9b90677 | 2010-09-06 17:24:28 -0700 | [diff] [blame] | 5183 | sdbg_host->dev.parent = pseudo_primary; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5184 | sdbg_host->dev.release = &sdebug_release_adapter; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5185 | dev_set_name(&sdbg_host->dev, "adapter%d", sdebug_add_host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5186 | |
| 5187 | error = device_register(&sdbg_host->dev); |
| 5188 | |
| 5189 | if (error) |
| 5190 | goto clean; |
| 5191 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5192 | ++sdebug_add_host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5193 | return error; |
| 5194 | |
| 5195 | clean: |
FUJITA Tomonori | 8b40228 | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 5196 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
| 5197 | dev_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5198 | list_del(&sdbg_devinfo->dev_list); |
| 5199 | kfree(sdbg_devinfo); |
| 5200 | } |
| 5201 | |
| 5202 | kfree(sdbg_host); |
| 5203 | return error; |
| 5204 | } |
| 5205 | |
| 5206 | static void sdebug_remove_adapter(void) |
| 5207 | { |
| 5208 | struct sdebug_host_info * sdbg_host = NULL; |
| 5209 | |
| 5210 | spin_lock(&sdebug_host_list_lock); |
| 5211 | if (!list_empty(&sdebug_host_list)) { |
| 5212 | sdbg_host = list_entry(sdebug_host_list.prev, |
| 5213 | struct sdebug_host_info, host_list); |
| 5214 | list_del(&sdbg_host->host_list); |
| 5215 | } |
| 5216 | spin_unlock(&sdebug_host_list_lock); |
| 5217 | |
| 5218 | if (!sdbg_host) |
| 5219 | return; |
| 5220 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5221 | device_unregister(&sdbg_host->dev); |
| 5222 | --sdebug_add_host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5223 | } |
| 5224 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 5225 | static int sdebug_change_qdepth(struct scsi_device *sdev, int qdepth) |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5226 | { |
| 5227 | int num_in_q = 0; |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5228 | struct sdebug_dev_info *devip; |
| 5229 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5230 | block_unblock_all_queues(true); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5231 | devip = (struct sdebug_dev_info *)sdev->hostdata; |
| 5232 | if (NULL == devip) { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5233 | block_unblock_all_queues(false); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5234 | return -ENODEV; |
| 5235 | } |
| 5236 | num_in_q = atomic_read(&devip->num_in_q); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5237 | |
Christoph Hellwig | c40ecc1 | 2014-11-13 14:25:11 +0100 | [diff] [blame] | 5238 | if (qdepth < 1) |
| 5239 | qdepth = 1; |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5240 | /* allow to exceed max host qc_arr elements for testing */ |
| 5241 | if (qdepth > SDEBUG_CANQUEUE + 10) |
| 5242 | qdepth = SDEBUG_CANQUEUE + 10; |
Christoph Hellwig | db5ed4d | 2014-11-13 15:08:42 +0100 | [diff] [blame] | 5243 | scsi_change_queue_depth(sdev, qdepth); |
Christoph Hellwig | c40ecc1 | 2014-11-13 14:25:11 +0100 | [diff] [blame] | 5244 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5245 | if (SDEBUG_OPT_Q_NOISE & sdebug_opts) { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5246 | sdev_printk(KERN_INFO, sdev, "%s: qdepth=%d, num_in_q=%d\n", |
Christoph Hellwig | c40ecc1 | 2014-11-13 14:25:11 +0100 | [diff] [blame] | 5247 | __func__, qdepth, num_in_q); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5248 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5249 | block_unblock_all_queues(false); |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5250 | return sdev->queue_depth; |
| 5251 | } |
| 5252 | |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5253 | static bool fake_timeout(struct scsi_cmnd *scp) |
Douglas Gilbert | 817fd66 | 2014-11-24 20:18:02 -0500 | [diff] [blame] | 5254 | { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5255 | if (0 == (atomic_read(&sdebug_cmnd_count) % abs(sdebug_every_nth))) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5256 | if (sdebug_every_nth < -1) |
| 5257 | sdebug_every_nth = -1; |
| 5258 | if (SDEBUG_OPT_TIMEOUT & sdebug_opts) |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5259 | return true; /* ignore command causing timeout */ |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5260 | else if (SDEBUG_OPT_MAC_TIMEOUT & sdebug_opts && |
Douglas Gilbert | 817fd66 | 2014-11-24 20:18:02 -0500 | [diff] [blame] | 5261 | scsi_medium_access_command(scp)) |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5262 | return true; /* time out reads and writes */ |
Douglas Gilbert | 817fd66 | 2014-11-24 20:18:02 -0500 | [diff] [blame] | 5263 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5264 | return false; |
Douglas Gilbert | 817fd66 | 2014-11-24 20:18:02 -0500 | [diff] [blame] | 5265 | } |
| 5266 | |
Douglas Gilbert | fd32119 | 2016-04-25 12:16:33 -0400 | [diff] [blame] | 5267 | static int scsi_debug_queuecommand(struct Scsi_Host *shost, |
| 5268 | struct scsi_cmnd *scp) |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5269 | { |
| 5270 | u8 sdeb_i; |
| 5271 | struct scsi_device *sdp = scp->device; |
| 5272 | const struct opcode_info_t *oip; |
| 5273 | const struct opcode_info_t *r_oip; |
| 5274 | struct sdebug_dev_info *devip; |
| 5275 | u8 *cmd = scp->cmnd; |
| 5276 | int (*r_pfp)(struct scsi_cmnd *, struct sdebug_dev_info *); |
| 5277 | int k, na; |
| 5278 | int errsts = 0; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5279 | u32 flags; |
| 5280 | u16 sa; |
| 5281 | u8 opcode = cmd[0]; |
| 5282 | bool has_wlun_rl; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5283 | |
| 5284 | scsi_set_resid(scp, 0); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5285 | if (sdebug_statistics) |
| 5286 | atomic_inc(&sdebug_cmnd_count); |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5287 | if (unlikely(sdebug_verbose && |
| 5288 | !(SDEBUG_OPT_NO_CDB_NOISE & sdebug_opts))) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5289 | char b[120]; |
| 5290 | int n, len, sb; |
| 5291 | |
| 5292 | len = scp->cmd_len; |
| 5293 | sb = (int)sizeof(b); |
| 5294 | if (len > 32) |
| 5295 | strcpy(b, "too long, over 32 bytes"); |
| 5296 | else { |
| 5297 | for (k = 0, n = 0; k < len && n < sb; ++k) |
| 5298 | n += scnprintf(b + n, sb - n, "%02x ", |
| 5299 | (u32)cmd[k]); |
| 5300 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5301 | if (sdebug_mq_active) |
| 5302 | sdev_printk(KERN_INFO, sdp, "%s: tag=%u, cmd %s\n", |
| 5303 | my_name, blk_mq_unique_tag(scp->request), |
| 5304 | b); |
| 5305 | else |
| 5306 | sdev_printk(KERN_INFO, sdp, "%s: cmd %s\n", my_name, |
| 5307 | b); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5308 | } |
Tomas Winkler | 34d5543 | 2015-07-28 16:54:21 +0300 | [diff] [blame] | 5309 | has_wlun_rl = (sdp->lun == SCSI_W_LUN_REPORT_LUNS); |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5310 | if (unlikely((sdp->lun >= sdebug_max_luns) && !has_wlun_rl)) |
| 5311 | goto err_out; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5312 | |
| 5313 | sdeb_i = opcode_ind_arr[opcode]; /* fully mapped */ |
| 5314 | oip = &opcode_info_arr[sdeb_i]; /* safe if table consistent */ |
| 5315 | devip = (struct sdebug_dev_info *)sdp->hostdata; |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5316 | if (unlikely(!devip)) { |
| 5317 | devip = find_build_dev_info(sdp); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5318 | if (NULL == devip) |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5319 | goto err_out; |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5320 | } |
| 5321 | na = oip->num_attached; |
| 5322 | r_pfp = oip->pfp; |
| 5323 | if (na) { /* multiple commands with this opcode */ |
| 5324 | r_oip = oip; |
| 5325 | if (FF_SA & r_oip->flags) { |
| 5326 | if (F_SA_LOW & oip->flags) |
| 5327 | sa = 0x1f & cmd[1]; |
| 5328 | else |
| 5329 | sa = get_unaligned_be16(cmd + 8); |
| 5330 | for (k = 0; k <= na; oip = r_oip->arrp + k++) { |
| 5331 | if (opcode == oip->opcode && sa == oip->sa) |
| 5332 | break; |
| 5333 | } |
| 5334 | } else { /* since no service action only check opcode */ |
| 5335 | for (k = 0; k <= na; oip = r_oip->arrp + k++) { |
| 5336 | if (opcode == oip->opcode) |
| 5337 | break; |
| 5338 | } |
| 5339 | } |
| 5340 | if (k > na) { |
| 5341 | if (F_SA_LOW & r_oip->flags) |
| 5342 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 4); |
| 5343 | else if (F_SA_HIGH & r_oip->flags) |
| 5344 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, 8, 7); |
| 5345 | else |
| 5346 | mk_sense_invalid_opcode(scp); |
| 5347 | goto check_cond; |
| 5348 | } |
| 5349 | } /* else (when na==0) we assume the oip is a match */ |
| 5350 | flags = oip->flags; |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5351 | if (unlikely(F_INV_OP & flags)) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5352 | mk_sense_invalid_opcode(scp); |
| 5353 | goto check_cond; |
| 5354 | } |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5355 | if (unlikely(has_wlun_rl && !(F_RL_WLUN_OK & flags))) { |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5356 | if (sdebug_verbose) |
| 5357 | sdev_printk(KERN_INFO, sdp, "%s: Opcode 0x%x not%s\n", |
| 5358 | my_name, opcode, " supported for wlun"); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5359 | mk_sense_invalid_opcode(scp); |
| 5360 | goto check_cond; |
| 5361 | } |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5362 | if (unlikely(sdebug_strict)) { /* check cdb against mask */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5363 | u8 rem; |
| 5364 | int j; |
| 5365 | |
| 5366 | for (k = 1; k < oip->len_mask[0] && k < 16; ++k) { |
| 5367 | rem = ~oip->len_mask[k] & cmd[k]; |
| 5368 | if (rem) { |
| 5369 | for (j = 7; j >= 0; --j, rem <<= 1) { |
| 5370 | if (0x80 & rem) |
| 5371 | break; |
| 5372 | } |
| 5373 | mk_sense_invalid_fld(scp, SDEB_IN_CDB, k, j); |
| 5374 | goto check_cond; |
| 5375 | } |
| 5376 | } |
| 5377 | } |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5378 | if (unlikely(!(F_SKIP_UA & flags) && |
Douglas Gilbert | b01f6f8 | 2016-04-30 22:44:42 -0400 | [diff] [blame] | 5379 | find_first_bit(devip->uas_bm, |
| 5380 | SDEBUG_NUM_UAS) != SDEBUG_NUM_UAS)) { |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5381 | errsts = make_ua(scp, devip); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5382 | if (errsts) |
| 5383 | goto check_cond; |
| 5384 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5385 | if (unlikely((F_M_ACCESS & flags) && atomic_read(&devip->stopped))) { |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5386 | mk_sense_buffer(scp, NOT_READY, LOGICAL_UNIT_NOT_READY, 0x2); |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5387 | if (sdebug_verbose) |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5388 | sdev_printk(KERN_INFO, sdp, "%s reports: Not ready: " |
| 5389 | "%s\n", my_name, "initializing command " |
| 5390 | "required"); |
| 5391 | errsts = check_condition_result; |
| 5392 | goto fini; |
| 5393 | } |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5394 | if (sdebug_fake_rw && (F_FAKE_RW & flags)) |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5395 | goto fini; |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5396 | if (unlikely(sdebug_every_nth)) { |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5397 | if (fake_timeout(scp)) |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5398 | return 0; /* ignore command: make trouble */ |
| 5399 | } |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5400 | if (likely(oip->pfp)) |
| 5401 | errsts = oip->pfp(scp, devip); /* calls a resp_* function */ |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5402 | else if (r_pfp) /* if leaf function ptr NULL, try the root's */ |
| 5403 | errsts = r_pfp(scp, devip); |
| 5404 | |
| 5405 | fini: |
| 5406 | return schedule_resp(scp, devip, errsts, |
Douglas Gilbert | c220609 | 2016-04-25 12:16:31 -0400 | [diff] [blame] | 5407 | ((F_DELAY_OVERR & flags) ? 0 : sdebug_jdelay)); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5408 | check_cond: |
| 5409 | return schedule_resp(scp, devip, check_condition_result, 0); |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5410 | err_out: |
| 5411 | return schedule_resp(scp, NULL, DID_NO_CONNECT << 16, 0); |
Douglas Gilbert | c2248fc | 2014-11-24 20:46:29 -0500 | [diff] [blame] | 5412 | } |
| 5413 | |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5414 | static struct scsi_host_template sdebug_driver_template = { |
Al Viro | c8ed555 | 2013-03-31 01:46:06 -0400 | [diff] [blame] | 5415 | .show_info = scsi_debug_show_info, |
| 5416 | .write_info = scsi_debug_write_info, |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5417 | .proc_name = sdebug_proc_name, |
| 5418 | .name = "SCSI DEBUG", |
| 5419 | .info = scsi_debug_info, |
| 5420 | .slave_alloc = scsi_debug_slave_alloc, |
| 5421 | .slave_configure = scsi_debug_slave_configure, |
| 5422 | .slave_destroy = scsi_debug_slave_destroy, |
| 5423 | .ioctl = scsi_debug_ioctl, |
Douglas Gilbert | 185dd23 | 2016-04-25 12:16:29 -0400 | [diff] [blame] | 5424 | .queuecommand = scsi_debug_queuecommand, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5425 | .change_queue_depth = sdebug_change_qdepth, |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5426 | .eh_abort_handler = scsi_debug_abort, |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5427 | .eh_device_reset_handler = scsi_debug_device_reset, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5428 | .eh_target_reset_handler = scsi_debug_target_reset, |
| 5429 | .eh_bus_reset_handler = scsi_debug_bus_reset, |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5430 | .eh_host_reset_handler = scsi_debug_host_reset, |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5431 | .can_queue = SDEBUG_CANQUEUE, |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5432 | .this_id = 7, |
Ming Lin | 65e8617 | 2016-04-04 14:48:10 -0700 | [diff] [blame] | 5433 | .sg_tablesize = SG_MAX_SEGMENTS, |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5434 | .cmd_per_lun = DEF_CMD_PER_LUN, |
Akinobu Mita | 6bb5e6e | 2014-06-02 22:56:49 +0900 | [diff] [blame] | 5435 | .max_sectors = -1U, |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5436 | .use_clustering = DISABLE_CLUSTERING, |
| 5437 | .module = THIS_MODULE, |
Christoph Hellwig | c40ecc1 | 2014-11-13 14:25:11 +0100 | [diff] [blame] | 5438 | .track_queue_depth = 1, |
FUJITA Tomonori | 9e603ca | 2008-03-02 18:30:16 +0900 | [diff] [blame] | 5439 | }; |
| 5440 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5441 | static int sdebug_driver_probe(struct device * dev) |
| 5442 | { |
Douglas Gilbert | 22017ed | 2014-11-24 23:04:47 -0500 | [diff] [blame] | 5443 | int error = 0; |
| 5444 | struct sdebug_host_info *sdbg_host; |
| 5445 | struct Scsi_Host *hpnt; |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5446 | int hprot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5447 | |
| 5448 | sdbg_host = to_sdebug_host(dev); |
| 5449 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5450 | sdebug_driver_template.can_queue = sdebug_max_queue; |
| 5451 | if (sdebug_clustering) |
Akinobu Mita | 0759c66 | 2014-02-26 22:57:04 +0900 | [diff] [blame] | 5452 | sdebug_driver_template.use_clustering = ENABLE_CLUSTERING; |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 5453 | hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); |
| 5454 | if (NULL == hpnt) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5455 | pr_err("scsi_host_alloc failed\n"); |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 5456 | error = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5457 | return error; |
Douglas Gilbert | 78d4e5a | 2010-03-25 17:29:05 -0400 | [diff] [blame] | 5458 | } |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5459 | if (submit_queues > nr_cpu_ids) { |
| 5460 | pr_warn("%s: trim submit_queues (was %d) to nr_cpu_ids=%d\n", |
| 5461 | my_name, submit_queues, nr_cpu_ids); |
| 5462 | submit_queues = nr_cpu_ids; |
| 5463 | } |
| 5464 | /* Decide whether to tell scsi subsystem that we want mq */ |
| 5465 | /* Following should give the same answer for each host */ |
| 5466 | sdebug_mq_active = shost_use_blk_mq(hpnt) && (submit_queues > 1); |
| 5467 | if (sdebug_mq_active) |
| 5468 | hpnt->nr_hw_queues = submit_queues; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5469 | |
| 5470 | sdbg_host->shost = hpnt; |
| 5471 | *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5472 | if ((hpnt->this_id >= 0) && (sdebug_num_tgts > hpnt->this_id)) |
| 5473 | hpnt->max_id = sdebug_num_tgts + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5474 | else |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5475 | hpnt->max_id = sdebug_num_tgts; |
| 5476 | /* = sdebug_max_luns; */ |
Tomas Winkler | f2d3fd2 | 2015-07-28 16:54:25 +0300 | [diff] [blame] | 5477 | hpnt->max_lun = SCSI_W_LUN_REPORT_LUNS + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5478 | |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5479 | hprot = 0; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5480 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5481 | switch (sdebug_dif) { |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5482 | |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 5483 | case T10_PI_TYPE1_PROTECTION: |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5484 | hprot = SHOST_DIF_TYPE1_PROTECTION; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5485 | if (sdebug_dix) |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5486 | hprot |= SHOST_DIX_TYPE1_PROTECTION; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5487 | break; |
| 5488 | |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 5489 | case T10_PI_TYPE2_PROTECTION: |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5490 | hprot = SHOST_DIF_TYPE2_PROTECTION; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5491 | if (sdebug_dix) |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5492 | hprot |= SHOST_DIX_TYPE2_PROTECTION; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5493 | break; |
| 5494 | |
Christoph Hellwig | 8475c81 | 2016-09-11 19:35:41 +0200 | [diff] [blame] | 5495 | case T10_PI_TYPE3_PROTECTION: |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5496 | hprot = SHOST_DIF_TYPE3_PROTECTION; |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5497 | if (sdebug_dix) |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5498 | hprot |= SHOST_DIX_TYPE3_PROTECTION; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5499 | break; |
| 5500 | |
| 5501 | default: |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5502 | if (sdebug_dix) |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5503 | hprot |= SHOST_DIX_TYPE0_PROTECTION; |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5504 | break; |
| 5505 | } |
| 5506 | |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5507 | scsi_host_set_prot(hpnt, hprot); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5508 | |
Douglas Gilbert | f46eb0e | 2016-04-25 12:16:34 -0400 | [diff] [blame] | 5509 | if (have_dif_prot || sdebug_dix) |
| 5510 | pr_info("host protection%s%s%s%s%s%s%s\n", |
| 5511 | (hprot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", |
| 5512 | (hprot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", |
| 5513 | (hprot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", |
| 5514 | (hprot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", |
| 5515 | (hprot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", |
| 5516 | (hprot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", |
| 5517 | (hprot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5518 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5519 | if (sdebug_guard == 1) |
Martin K. Petersen | c6a4428 | 2009-01-04 03:08:19 -0500 | [diff] [blame] | 5520 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP); |
| 5521 | else |
| 5522 | scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC); |
| 5523 | |
Douglas Gilbert | 773642d | 2016-04-25 12:16:28 -0400 | [diff] [blame] | 5524 | sdebug_verbose = !!(SDEBUG_OPT_NOISE & sdebug_opts); |
| 5525 | sdebug_any_injecting_opt = !!(SDEBUG_OPT_ALL_INJECTING & sdebug_opts); |
Douglas Gilbert | c483739 | 2016-05-06 00:40:26 -0400 | [diff] [blame] | 5526 | if (sdebug_every_nth) /* need stats counters for every_nth */ |
| 5527 | sdebug_statistics = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5528 | error = scsi_add_host(hpnt, &sdbg_host->dev); |
| 5529 | if (error) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5530 | pr_err("scsi_add_host failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5531 | error = -ENODEV; |
| 5532 | scsi_host_put(hpnt); |
| 5533 | } else |
| 5534 | scsi_scan_host(hpnt); |
| 5535 | |
Douglas Gilbert | cbf6784 | 2014-07-26 11:55:35 -0400 | [diff] [blame] | 5536 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5537 | } |
| 5538 | |
| 5539 | static int sdebug_driver_remove(struct device * dev) |
| 5540 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5541 | struct sdebug_host_info *sdbg_host; |
FUJITA Tomonori | 8b40228 | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 5542 | struct sdebug_dev_info *sdbg_devinfo, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5543 | |
| 5544 | sdbg_host = to_sdebug_host(dev); |
| 5545 | |
| 5546 | if (!sdbg_host) { |
Tomas Winkler | c1287970 | 2015-07-28 16:54:20 +0300 | [diff] [blame] | 5547 | pr_err("Unable to locate host info\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5548 | return -ENODEV; |
| 5549 | } |
| 5550 | |
| 5551 | scsi_remove_host(sdbg_host->shost); |
| 5552 | |
FUJITA Tomonori | 8b40228 | 2008-03-20 11:09:18 +0900 | [diff] [blame] | 5553 | list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, |
| 5554 | dev_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5555 | list_del(&sdbg_devinfo->dev_list); |
| 5556 | kfree(sdbg_devinfo); |
| 5557 | } |
| 5558 | |
| 5559 | scsi_host_put(sdbg_host->shost); |
| 5560 | return 0; |
| 5561 | } |
| 5562 | |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 5563 | static int pseudo_lld_bus_match(struct device *dev, |
| 5564 | struct device_driver *dev_driver) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5565 | { |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 5566 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5567 | } |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 5568 | |
| 5569 | static struct bus_type pseudo_lld_bus = { |
| 5570 | .name = "pseudo", |
| 5571 | .match = pseudo_lld_bus_match, |
| 5572 | .probe = sdebug_driver_probe, |
| 5573 | .remove = sdebug_driver_remove, |
Akinobu Mita | 8206937 | 2013-10-14 22:48:04 +0900 | [diff] [blame] | 5574 | .drv_groups = sdebug_drv_groups, |
FUJITA Tomonori | 8dea0d0 | 2008-03-30 00:59:58 +0900 | [diff] [blame] | 5575 | }; |