1/* SPDX-License-Identifier: GPL-2.0 */
2
3#ifndef _SCSI_SCSI_STATUS_H
4#define _SCSI_SCSI_STATUS_H
5
6#include <linux/types.h>
7#include <scsi/scsi_proto.h>
8
9/* Message codes. */
10enum scsi_msg_byte {
11	COMMAND_COMPLETE	= 0x00,
12	EXTENDED_MESSAGE	= 0x01,
13	SAVE_POINTERS		= 0x02,
14	RESTORE_POINTERS	= 0x03,
15	DISCONNECT		= 0x04,
16	INITIATOR_ERROR		= 0x05,
17	ABORT_TASK_SET		= 0x06,
18	MESSAGE_REJECT		= 0x07,
19	NOP			= 0x08,
20	MSG_PARITY_ERROR	= 0x09,
21	LINKED_CMD_COMPLETE	= 0x0a,
22	LINKED_FLG_CMD_COMPLETE	= 0x0b,
23	TARGET_RESET		= 0x0c,
24	ABORT_TASK		= 0x0d,
25	CLEAR_TASK_SET		= 0x0e,
26	INITIATE_RECOVERY	= 0x0f,            /* SCSI-II only */
27	RELEASE_RECOVERY	= 0x10,            /* SCSI-II only */
28	TERMINATE_IO_PROC	= 0x11,            /* SCSI-II only */
29	CLEAR_ACA		= 0x16,
30	LOGICAL_UNIT_RESET	= 0x17,
31	SIMPLE_QUEUE_TAG	= 0x20,
32	HEAD_OF_QUEUE_TAG	= 0x21,
33	ORDERED_QUEUE_TAG	= 0x22,
34	IGNORE_WIDE_RESIDUE	= 0x23,
35	ACA			= 0x24,
36	QAS_REQUEST		= 0x55,
37
38	/* Old SCSI2 names, don't use in new code */
39	BUS_DEVICE_RESET	= TARGET_RESET,
40	ABORT			= ABORT_TASK_SET,
41};
42
43/* Host byte codes. */
44enum scsi_host_status {
45	DID_OK		= 0x00,	/* NO error                                */
46	DID_NO_CONNECT	= 0x01,	/* Couldn't connect before timeout period  */
47	DID_BUS_BUSY	= 0x02,	/* BUS stayed busy through time out period */
48	DID_TIME_OUT	= 0x03,	/* TIMED OUT for other reason              */
49	DID_BAD_TARGET	= 0x04,	/* BAD target.                             */
50	DID_ABORT	= 0x05,	/* Told to abort for some other reason     */
51	DID_PARITY	= 0x06,	/* Parity error                            */
52	DID_ERROR	= 0x07,	/* Internal error                          */
53	DID_RESET	= 0x08,	/* Reset by somebody.                      */
54	DID_BAD_INTR	= 0x09,	/* Got an interrupt we weren't expecting.  */
55	DID_PASSTHROUGH	= 0x0a,	/* Force command past mid-layer            */
56	DID_SOFT_ERROR	= 0x0b,	/* The low level driver just wish a retry  */
57	DID_IMM_RETRY	= 0x0c,	/* Retry without decrementing retry count  */
58	DID_REQUEUE	= 0x0d,	/* Requeue command (no immediate retry) also
59				 * without decrementing the retry count	   */
60	DID_TRANSPORT_DISRUPTED = 0x0e, /* Transport error disrupted execution
61					 * and the driver blocked the port to
62					 * recover the link. Transport class will
63					 * retry or fail IO */
64	DID_TRANSPORT_FAILFAST = 0x0f, /* Transport class fastfailed the io */
65	/*
66	 * We used to have DID_TARGET_FAILURE, DID_NEXUS_FAILURE,
67	 * DID_ALLOC_FAILURE and DID_MEDIUM_ERROR at 0x10 - 0x13. For compat
68	 * with userspace apps that parse the host byte for SG IO, we leave
69	 * that block of codes unused and start at 0x14 below.
70	 */
71	DID_TRANSPORT_MARGINAL = 0x14, /* Transport marginal errors */
72};
73
74#endif /* _SCSI_SCSI_STATUS_H */
75