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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/include/scsi/scsi_status.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef _SCSI_SCSI_STATUS_H

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#define _SCSI_SCSI_STATUS_H

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#include <linux/types.h>

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#include <scsi/scsi_proto.h>

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/* Message codes. */

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enum scsi_msg_byte {

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	COMMAND_COMPLETE	= 0x00,

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	EXTENDED_MESSAGE	= 0x01,

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	SAVE_POINTERS		= 0x02,

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	RESTORE_POINTERS	= 0x03,

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	DISCONNECT		= 0x04,

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	INITIATOR_ERROR		= 0x05,

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	ABORT_TASK_SET		= 0x06,

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	MESSAGE_REJECT		= 0x07,

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	NOP			= 0x08,

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	MSG_PARITY_ERROR	= 0x09,

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	LINKED_CMD_COMPLETE	= 0x0a,

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	LINKED_FLG_CMD_COMPLETE	= 0x0b,

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	TARGET_RESET		= 0x0c,

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	ABORT_TASK		= 0x0d,

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	CLEAR_TASK_SET		= 0x0e,

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	INITIATE_RECOVERY	= 0x0f,            /* SCSI-II only */

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	RELEASE_RECOVERY	= 0x10,            /* SCSI-II only */

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	TERMINATE_IO_PROC	= 0x11,            /* SCSI-II only */

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	CLEAR_ACA		= 0x16,

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	LOGICAL_UNIT_RESET	= 0x17,

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	SIMPLE_QUEUE_TAG	= 0x20,

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	HEAD_OF_QUEUE_TAG	= 0x21,

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	ORDERED_QUEUE_TAG	= 0x22,

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	IGNORE_WIDE_RESIDUE	= 0x23,

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	ACA			= 0x24,

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	QAS_REQUEST		= 0x55,

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	/* Old SCSI2 names, don't use in new code */

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	BUS_DEVICE_RESET	= TARGET_RESET,

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	ABORT			= ABORT_TASK_SET,

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};

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/* Host byte codes. */

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enum scsi_host_status {

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	DID_OK		= 0x00,	/* NO error                                */

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	DID_NO_CONNECT	= 0x01,	/* Couldn't connect before timeout period  */

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	DID_BUS_BUSY	= 0x02,	/* BUS stayed busy through time out period */

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	DID_TIME_OUT	= 0x03,	/* TIMED OUT for other reason              */

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	DID_BAD_TARGET	= 0x04,	/* BAD target.                             */

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	DID_ABORT	= 0x05,	/* Told to abort for some other reason     */

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	DID_PARITY	= 0x06,	/* Parity error                            */

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	DID_ERROR	= 0x07,	/* Internal error                          */

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	DID_RESET	= 0x08,	/* Reset by somebody.                      */

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	DID_BAD_INTR	= 0x09,	/* Got an interrupt we weren't expecting.  */

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	DID_PASSTHROUGH	= 0x0a,	/* Force command past mid-layer            */

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	DID_SOFT_ERROR	= 0x0b,	/* The low level driver just wish a retry  */

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	DID_IMM_RETRY	= 0x0c,	/* Retry without decrementing retry count  */

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	DID_REQUEUE	= 0x0d,	/* Requeue command (no immediate retry) also

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				 * without decrementing the retry count	   */

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	DID_TRANSPORT_DISRUPTED = 0x0e, /* Transport error disrupted execution

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					 * and the driver blocked the port to

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					 * recover the link. Transport class will

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					 * retry or fail IO */

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	DID_TRANSPORT_FAILFAST = 0x0f, /* Transport class fastfailed the io */

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	/*

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	 * We used to have DID_TARGET_FAILURE, DID_NEXUS_FAILURE,

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	 * DID_ALLOC_FAILURE and DID_MEDIUM_ERROR at 0x10 - 0x13. For compat

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	 * with userspace apps that parse the host byte for SG IO, we leave

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	 * that block of codes unused and start at 0x14 below.

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	 */

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	DID_TRANSPORT_MARGINAL = 0x14, /* Transport marginal errors */

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};

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#endif /* _SCSI_SCSI_STATUS_H */

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