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149d0e489e
Make it possible for the compiler to verify whether SAM and host status codes are used correctly. [mkp: resolve conflicts with Hannes' SCSI result series] Link: https://lore.kernel.org/r/20210524025457.11299-3-bvanassche@acm.org Cc: Hannes Reinecke <hare@suse.com> Reviewed-by: John Garry <john.garry@huawei.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
445 lines
15 KiB
C
445 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* ASCII values for a number of symbolic constants, printing functions,
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* etc.
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* Additions for SCSI 2 and Linux 2.2.x by D. Gilbert (990422)
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* Additions for SCSI 3+ (SPC-3 T10/1416-D Rev 07 3 May 2002)
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* by D. Gilbert and aeb (20020609)
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* Updated to SPC-4 T10/1713-D Rev 36g, D. Gilbert 20130701
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*/
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#include <linux/blkdev.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_eh.h>
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#include <scsi/scsi_dbg.h>
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/* Commands with service actions that change the command name */
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#define THIRD_PARTY_COPY_OUT 0x83
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#define THIRD_PARTY_COPY_IN 0x84
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struct sa_name_list {
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int opcode;
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const struct value_name_pair *arr;
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int arr_sz;
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};
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struct value_name_pair {
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int value;
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const char * name;
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};
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static const char * cdb_byte0_names[] = {
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/* 00-03 */ "Test Unit Ready", "Rezero Unit/Rewind", NULL, "Request Sense",
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/* 04-07 */ "Format Unit/Medium", "Read Block Limits", NULL,
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"Reassign Blocks",
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/* 08-0d */ "Read(6)", NULL, "Write(6)", "Seek(6)", NULL, NULL,
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/* 0e-12 */ NULL, "Read Reverse", "Write Filemarks", "Space", "Inquiry",
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/* 13-16 */ "Verify(6)", "Recover Buffered Data", "Mode Select(6)",
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"Reserve(6)",
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/* 17-1a */ "Release(6)", "Copy", "Erase", "Mode Sense(6)",
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/* 1b-1d */ "Start/Stop Unit", "Receive Diagnostic", "Send Diagnostic",
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/* 1e-1f */ "Prevent/Allow Medium Removal", NULL,
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/* 20-22 */ NULL, NULL, NULL,
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/* 23-28 */ "Read Format Capacities", "Set Window",
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"Read Capacity(10)", NULL, NULL, "Read(10)",
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/* 29-2d */ "Read Generation", "Write(10)", "Seek(10)", "Erase(10)",
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"Read updated block",
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/* 2e-31 */ "Write Verify(10)", "Verify(10)", "Search High", "Search Equal",
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/* 32-34 */ "Search Low", "Set Limits", "Prefetch/Read Position",
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/* 35-37 */ "Synchronize Cache(10)", "Lock/Unlock Cache(10)",
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"Read Defect Data(10)",
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/* 38-3c */ "Medium Scan", "Compare", "Copy Verify", "Write Buffer",
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"Read Buffer",
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/* 3d-3f */ "Update Block", "Read Long(10)", "Write Long(10)",
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/* 40-41 */ "Change Definition", "Write Same(10)",
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/* 42-48 */ "Unmap/Read sub-channel", "Read TOC/PMA/ATIP",
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"Read density support", "Play audio(10)", "Get configuration",
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"Play audio msf", "Sanitize/Play audio track/index",
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/* 49-4f */ "Play track relative(10)", "Get event status notification",
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"Pause/resume", "Log Select", "Log Sense", "Stop play/scan",
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NULL,
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/* 50-55 */ "Xdwrite", "Xpwrite, Read disk info", "Xdread, Read track info",
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"Reserve track", "Send OPC info", "Mode Select(10)",
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/* 56-5b */ "Reserve(10)", "Release(10)", "Repair track", "Read master cue",
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"Mode Sense(10)", "Close track/session",
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/* 5c-5f */ "Read buffer capacity", "Send cue sheet", "Persistent reserve in",
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"Persistent reserve out",
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/* 60-67 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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/* 68-6f */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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/* 70-77 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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/* 78-7f */ NULL, NULL, NULL, NULL, NULL, NULL, "Extended CDB",
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"Variable length",
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/* 80-84 */ "Xdwrite(16)", "Rebuild(16)", "Regenerate(16)",
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"Third party copy out", "Third party copy in",
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/* 85-89 */ "ATA command pass through(16)", "Access control in",
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"Access control out", "Read(16)", "Compare and Write",
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/* 8a-8f */ "Write(16)", "ORWrite", "Read attributes", "Write attributes",
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"Write and verify(16)", "Verify(16)",
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/* 90-94 */ "Pre-fetch(16)", "Synchronize cache(16)",
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"Lock/unlock cache(16)", "Write same(16)", NULL,
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/* 95-99 */ NULL, NULL, NULL, NULL, NULL,
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/* 9a-9f */ NULL, NULL, NULL, "Service action bidirectional",
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"Service action in(16)", "Service action out(16)",
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/* a0-a5 */ "Report luns", "ATA command pass through(12)/Blank",
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"Security protocol in", "Maintenance in", "Maintenance out",
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"Move medium/play audio(12)",
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/* a6-a9 */ "Exchange medium", "Move medium attached", "Read(12)",
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"Play track relative(12)",
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/* aa-ae */ "Write(12)", NULL, "Erase(12), Get Performance",
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"Read DVD structure", "Write and verify(12)",
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/* af-b1 */ "Verify(12)", "Search data high(12)", "Search data equal(12)",
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/* b2-b4 */ "Search data low(12)", "Set limits(12)",
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"Read element status attached",
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/* b5-b6 */ "Security protocol out", "Send volume tag, set streaming",
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/* b7-b9 */ "Read defect data(12)", "Read element status", "Read CD msf",
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/* ba-bc */ "Redundancy group (in), Scan",
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"Redundancy group (out), Set cd-rom speed", "Spare (in), Play cd",
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/* bd-bf */ "Spare (out), Mechanism status", "Volume set (in), Read cd",
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"Volume set (out), Send DVD structure",
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};
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static const struct value_name_pair maint_in_arr[] = {
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{0x5, "Report identifying information"},
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{0xa, "Report target port groups"},
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{0xb, "Report aliases"},
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{0xc, "Report supported operation codes"},
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{0xd, "Report supported task management functions"},
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{0xe, "Report priority"},
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{0xf, "Report timestamp"},
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{0x10, "Management protocol in"},
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};
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#define MAINT_IN_SZ ARRAY_SIZE(maint_in_arr)
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static const struct value_name_pair maint_out_arr[] = {
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{0x6, "Set identifying information"},
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{0xa, "Set target port groups"},
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{0xb, "Change aliases"},
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{0xc, "Remove I_T nexus"},
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{0xe, "Set priority"},
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{0xf, "Set timestamp"},
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{0x10, "Management protocol out"},
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};
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#define MAINT_OUT_SZ ARRAY_SIZE(maint_out_arr)
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static const struct value_name_pair serv_in12_arr[] = {
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{0x1, "Read media serial number"},
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};
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#define SERV_IN12_SZ ARRAY_SIZE(serv_in12_arr)
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static const struct value_name_pair serv_out12_arr[] = {
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{-1, "dummy entry"},
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};
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#define SERV_OUT12_SZ ARRAY_SIZE(serv_out12_arr)
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static const struct value_name_pair serv_bidi_arr[] = {
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{-1, "dummy entry"},
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};
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#define SERV_BIDI_SZ ARRAY_SIZE(serv_bidi_arr)
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static const struct value_name_pair serv_in16_arr[] = {
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{0x10, "Read capacity(16)"},
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{0x11, "Read long(16)"},
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{0x12, "Get LBA status"},
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{0x13, "Report referrals"},
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};
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#define SERV_IN16_SZ ARRAY_SIZE(serv_in16_arr)
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static const struct value_name_pair serv_out16_arr[] = {
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{0x11, "Write long(16)"},
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{0x1f, "Notify data transfer device(16)"},
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};
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#define SERV_OUT16_SZ ARRAY_SIZE(serv_out16_arr)
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static const struct value_name_pair pr_in_arr[] = {
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{0x0, "Persistent reserve in, read keys"},
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{0x1, "Persistent reserve in, read reservation"},
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{0x2, "Persistent reserve in, report capabilities"},
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{0x3, "Persistent reserve in, read full status"},
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};
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#define PR_IN_SZ ARRAY_SIZE(pr_in_arr)
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static const struct value_name_pair pr_out_arr[] = {
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{0x0, "Persistent reserve out, register"},
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{0x1, "Persistent reserve out, reserve"},
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{0x2, "Persistent reserve out, release"},
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{0x3, "Persistent reserve out, clear"},
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{0x4, "Persistent reserve out, preempt"},
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{0x5, "Persistent reserve out, preempt and abort"},
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{0x6, "Persistent reserve out, register and ignore existing key"},
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{0x7, "Persistent reserve out, register and move"},
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};
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#define PR_OUT_SZ ARRAY_SIZE(pr_out_arr)
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/* SPC-4 rev 34 renamed the Extended Copy opcode to Third Party Copy Out.
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LID1 (List Identifier length: 1 byte) is the Extended Copy found in SPC-2
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and SPC-3 */
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static const struct value_name_pair tpc_out_arr[] = {
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{0x0, "Extended copy(LID1)"},
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{0x1, "Extended copy(LID4)"},
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{0x10, "Populate token"},
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{0x11, "Write using token"},
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{0x1c, "Copy operation abort"},
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};
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#define TPC_OUT_SZ ARRAY_SIZE(tpc_out_arr)
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static const struct value_name_pair tpc_in_arr[] = {
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{0x0, "Receive copy status(LID1)"},
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{0x1, "Receive copy data(LID1)"},
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{0x3, "Receive copy operating parameters"},
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{0x4, "Receive copy failure details(LID1)"},
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{0x5, "Receive copy status(LID4)"},
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{0x6, "Receive copy data(LID4)"},
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{0x7, "Receive ROD token information"},
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{0x8, "Report all ROD tokens"},
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};
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#define TPC_IN_SZ ARRAY_SIZE(tpc_in_arr)
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static const struct value_name_pair variable_length_arr[] = {
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{0x1, "Rebuild(32)"},
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{0x2, "Regenerate(32)"},
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{0x3, "Xdread(32)"},
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{0x4, "Xdwrite(32)"},
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{0x5, "Xdwrite extended(32)"},
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{0x6, "Xpwrite(32)"},
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{0x7, "Xdwriteread(32)"},
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{0x8, "Xdwrite extended(64)"},
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{0x9, "Read(32)"},
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{0xa, "Verify(32)"},
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{0xb, "Write(32)"},
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{0xc, "Write an verify(32)"},
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{0xd, "Write same(32)"},
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{0x8801, "Format OSD"},
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{0x8802, "Create (osd)"},
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{0x8803, "List (osd)"},
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{0x8805, "Read (osd)"},
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{0x8806, "Write (osd)"},
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{0x8807, "Append (osd)"},
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{0x8808, "Flush (osd)"},
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{0x880a, "Remove (osd)"},
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{0x880b, "Create partition (osd)"},
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{0x880c, "Remove partition (osd)"},
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{0x880e, "Get attributes (osd)"},
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{0x880f, "Set attributes (osd)"},
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{0x8812, "Create and write (osd)"},
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{0x8815, "Create collection (osd)"},
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{0x8816, "Remove collection (osd)"},
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{0x8817, "List collection (osd)"},
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{0x8818, "Set key (osd)"},
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{0x8819, "Set master key (osd)"},
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{0x881a, "Flush collection (osd)"},
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{0x881b, "Flush partition (osd)"},
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{0x881c, "Flush OSD"},
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{0x8f7e, "Perform SCSI command (osd)"},
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{0x8f7f, "Perform task management function (osd)"},
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};
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#define VARIABLE_LENGTH_SZ ARRAY_SIZE(variable_length_arr)
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static struct sa_name_list sa_names_arr[] = {
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{VARIABLE_LENGTH_CMD, variable_length_arr, VARIABLE_LENGTH_SZ},
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{MAINTENANCE_IN, maint_in_arr, MAINT_IN_SZ},
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{MAINTENANCE_OUT, maint_out_arr, MAINT_OUT_SZ},
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{PERSISTENT_RESERVE_IN, pr_in_arr, PR_IN_SZ},
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{PERSISTENT_RESERVE_OUT, pr_out_arr, PR_OUT_SZ},
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{SERVICE_ACTION_IN_12, serv_in12_arr, SERV_IN12_SZ},
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{SERVICE_ACTION_OUT_12, serv_out12_arr, SERV_OUT12_SZ},
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{SERVICE_ACTION_BIDIRECTIONAL, serv_bidi_arr, SERV_BIDI_SZ},
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{SERVICE_ACTION_IN_16, serv_in16_arr, SERV_IN16_SZ},
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{SERVICE_ACTION_OUT_16, serv_out16_arr, SERV_OUT16_SZ},
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{THIRD_PARTY_COPY_IN, tpc_in_arr, TPC_IN_SZ},
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{THIRD_PARTY_COPY_OUT, tpc_out_arr, TPC_OUT_SZ},
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{0, NULL, 0},
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};
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bool scsi_opcode_sa_name(int opcode, int service_action,
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const char **cdb_name, const char **sa_name)
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{
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struct sa_name_list *sa_name_ptr;
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const struct value_name_pair *arr = NULL;
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int arr_sz, k;
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*cdb_name = NULL;
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if (opcode >= VENDOR_SPECIFIC_CDB)
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return false;
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if (opcode < ARRAY_SIZE(cdb_byte0_names))
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*cdb_name = cdb_byte0_names[opcode];
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for (sa_name_ptr = sa_names_arr; sa_name_ptr->arr; ++sa_name_ptr) {
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if (sa_name_ptr->opcode == opcode) {
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arr = sa_name_ptr->arr;
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arr_sz = sa_name_ptr->arr_sz;
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break;
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}
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}
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if (!arr)
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return false;
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for (k = 0; k < arr_sz; ++k, ++arr) {
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if (service_action == arr->value)
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break;
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}
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if (k < arr_sz)
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*sa_name = arr->name;
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return true;
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}
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struct error_info {
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unsigned short code12; /* 0x0302 looks better than 0x03,0x02 */
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unsigned short size;
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};
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/*
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* There are 700+ entries in this table. To save space, we don't store
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* (code, pointer) pairs, which would make sizeof(struct
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* error_info)==16 on 64 bits. Rather, the second element just stores
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* the size (including \0) of the corresponding string, and we use the
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* sum of these to get the appropriate offset into additional_text
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* defined below. This approach saves 12 bytes per entry.
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*/
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static const struct error_info additional[] =
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{
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#define SENSE_CODE(c, s) {c, sizeof(s)},
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#include "sense_codes.h"
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#undef SENSE_CODE
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};
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static const char *additional_text =
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#define SENSE_CODE(c, s) s "\0"
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#include "sense_codes.h"
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#undef SENSE_CODE
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;
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struct error_info2 {
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unsigned char code1, code2_min, code2_max;
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const char * str;
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const char * fmt;
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};
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static const struct error_info2 additional2[] =
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{
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{0x40, 0x00, 0x7f, "Ram failure", ""},
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{0x40, 0x80, 0xff, "Diagnostic failure on component", ""},
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{0x41, 0x00, 0xff, "Data path failure", ""},
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{0x42, 0x00, 0xff, "Power-on or self-test failure", ""},
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{0x4D, 0x00, 0xff, "Tagged overlapped commands", "task tag "},
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{0x70, 0x00, 0xff, "Decompression exception", "short algorithm id of "},
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{0, 0, 0, NULL, NULL}
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};
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/* description of the sense key values */
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static const char * const snstext[] = {
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"No Sense", /* 0: There is no sense information */
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"Recovered Error", /* 1: The last command completed successfully
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but used error correction */
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"Not Ready", /* 2: The addressed target is not ready */
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"Medium Error", /* 3: Data error detected on the medium */
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"Hardware Error", /* 4: Controller or device failure */
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"Illegal Request", /* 5: Error in request */
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"Unit Attention", /* 6: Removable medium was changed, or
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the target has been reset, or ... */
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"Data Protect", /* 7: Access to the data is blocked */
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"Blank Check", /* 8: Reached unexpected written or unwritten
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region of the medium */
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"Vendor Specific(9)",
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"Copy Aborted", /* A: COPY or COMPARE was aborted */
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"Aborted Command", /* B: The target aborted the command */
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"Equal", /* C: A SEARCH DATA command found data equal,
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reserved in SPC-4 rev 36 */
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"Volume Overflow", /* D: Medium full with still data to be written */
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"Miscompare", /* E: Source data and data on the medium
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do not agree */
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"Completed", /* F: command completed sense data reported,
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may occur for successful command */
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};
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/* Get sense key string or NULL if not available */
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const char *
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scsi_sense_key_string(unsigned char key)
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{
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if (key < ARRAY_SIZE(snstext))
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return snstext[key];
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return NULL;
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}
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EXPORT_SYMBOL(scsi_sense_key_string);
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/*
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* Get additional sense code string or NULL if not available.
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* This string may contain a "%x" and should be printed with ascq as arg.
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*/
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const char *
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scsi_extd_sense_format(unsigned char asc, unsigned char ascq, const char **fmt)
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{
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int i;
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unsigned short code = ((asc << 8) | ascq);
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unsigned offset = 0;
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*fmt = NULL;
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for (i = 0; i < ARRAY_SIZE(additional); i++) {
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if (additional[i].code12 == code)
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return additional_text + offset;
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offset += additional[i].size;
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}
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for (i = 0; additional2[i].fmt; i++) {
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if (additional2[i].code1 == asc &&
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ascq >= additional2[i].code2_min &&
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ascq <= additional2[i].code2_max) {
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*fmt = additional2[i].fmt;
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return additional2[i].str;
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}
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}
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return NULL;
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}
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EXPORT_SYMBOL(scsi_extd_sense_format);
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static const char * const hostbyte_table[]={
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"DID_OK", "DID_NO_CONNECT", "DID_BUS_BUSY", "DID_TIME_OUT", "DID_BAD_TARGET",
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"DID_ABORT", "DID_PARITY", "DID_ERROR", "DID_RESET", "DID_BAD_INTR",
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"DID_PASSTHROUGH", "DID_SOFT_ERROR", "DID_IMM_RETRY", "DID_REQUEUE",
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"DID_TRANSPORT_DISRUPTED", "DID_TRANSPORT_FAILFAST", "DID_TARGET_FAILURE",
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"DID_NEXUS_FAILURE", "DID_ALLOC_FAILURE", "DID_MEDIUM_ERROR" };
|
|
|
|
const char *scsi_hostbyte_string(int result)
|
|
{
|
|
enum scsi_host_status hb = host_byte(result);
|
|
const char *hb_string = NULL;
|
|
|
|
if (hb < ARRAY_SIZE(hostbyte_table))
|
|
hb_string = hostbyte_table[hb];
|
|
return hb_string;
|
|
}
|
|
EXPORT_SYMBOL(scsi_hostbyte_string);
|
|
|
|
#define scsi_mlreturn_name(result) { result, #result }
|
|
static const struct value_name_pair scsi_mlreturn_arr[] = {
|
|
scsi_mlreturn_name(NEEDS_RETRY),
|
|
scsi_mlreturn_name(SUCCESS),
|
|
scsi_mlreturn_name(FAILED),
|
|
scsi_mlreturn_name(QUEUED),
|
|
scsi_mlreturn_name(SOFT_ERROR),
|
|
scsi_mlreturn_name(ADD_TO_MLQUEUE),
|
|
scsi_mlreturn_name(TIMEOUT_ERROR),
|
|
scsi_mlreturn_name(SCSI_RETURN_NOT_HANDLED),
|
|
scsi_mlreturn_name(FAST_IO_FAIL)
|
|
};
|
|
|
|
const char *scsi_mlreturn_string(int result)
|
|
{
|
|
const struct value_name_pair *arr = scsi_mlreturn_arr;
|
|
int k;
|
|
|
|
for (k = 0; k < ARRAY_SIZE(scsi_mlreturn_arr); ++k, ++arr) {
|
|
if (result == arr->value)
|
|
return arr->name;
|
|
}
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(scsi_mlreturn_string);
|