/* SPDX-License-Identifier: GPL-2.0 */

#ifndef _SCSI_SCSI_STATUS_H
#define _SCSI_SCSI_STATUS_H

#include <linux/types.h>
#include <scsi/scsi_proto.h>

/* Message codes. */
enum scsi_msg_byte {
        COMMAND_COMPLETE        = 0x00,
        EXTENDED_MESSAGE        = 0x01,
        SAVE_POINTERS           = 0x02,
        RESTORE_POINTERS        = 0x03,
        DISCONNECT              = 0x04,
        INITIATOR_ERROR         = 0x05,
        ABORT_TASK_SET          = 0x06,
        MESSAGE_REJECT          = 0x07,
        NOP                     = 0x08,
        MSG_PARITY_ERROR        = 0x09,
        LINKED_CMD_COMPLETE     = 0x0a,
        LINKED_FLG_CMD_COMPLETE = 0x0b,
        TARGET_RESET            = 0x0c,
        ABORT_TASK              = 0x0d,
        CLEAR_TASK_SET          = 0x0e,
        INITIATE_RECOVERY       = 0x0f,            /* SCSI-II only */
        RELEASE_RECOVERY        = 0x10,            /* SCSI-II only */
        TERMINATE_IO_PROC       = 0x11,            /* SCSI-II only */
        CLEAR_ACA               = 0x16,
        LOGICAL_UNIT_RESET      = 0x17,
        SIMPLE_QUEUE_TAG        = 0x20,
        HEAD_OF_QUEUE_TAG       = 0x21,
        ORDERED_QUEUE_TAG       = 0x22,
        IGNORE_WIDE_RESIDUE     = 0x23,
        ACA                     = 0x24,
        QAS_REQUEST             = 0x55,

        /* Old SCSI2 names, don't use in new code */
        BUS_DEVICE_RESET        = TARGET_RESET,
        ABORT                   = ABORT_TASK_SET,
};

/* Host byte codes. */
enum scsi_host_status {
        DID_OK          = 0x00, /* NO error                                */
        DID_NO_CONNECT  = 0x01, /* Couldn't connect before timeout period  */
        DID_BUS_BUSY    = 0x02, /* BUS stayed busy through time out period */
        DID_TIME_OUT    = 0x03, /* TIMED OUT for other reason              */
        DID_BAD_TARGET  = 0x04, /* BAD target.                             */
        DID_ABORT       = 0x05, /* Told to abort for some other reason     */
        DID_PARITY      = 0x06, /* Parity error                            */
        DID_ERROR       = 0x07, /* Internal error                          */
        DID_RESET       = 0x08, /* Reset by somebody.                      */
        DID_BAD_INTR    = 0x09, /* Got an interrupt we weren't expecting.  */
        DID_PASSTHROUGH = 0x0a, /* Force command past mid-layer            */
        DID_SOFT_ERROR  = 0x0b, /* The low level driver just wish a retry  */
        DID_IMM_RETRY   = 0x0c, /* Retry without decrementing retry count  */
        DID_REQUEUE     = 0x0d, /* Requeue command (no immediate retry) also
                                 * without decrementing the retry count    */
        DID_TRANSPORT_DISRUPTED = 0x0e, /* Transport error disrupted execution
                                         * and the driver blocked the port to
                                         * recover the link. Transport class will
                                         * retry or fail IO */
        DID_TRANSPORT_FAILFAST = 0x0f, /* Transport class fastfailed the io */
        /*
         * We used to have DID_TARGET_FAILURE, DID_NEXUS_FAILURE,
         * DID_ALLOC_FAILURE and DID_MEDIUM_ERROR at 0x10 - 0x13. For compat
         * with userspace apps that parse the host byte for SG IO, we leave
         * that block of codes unused and start at 0x14 below.
         */
        DID_TRANSPORT_MARGINAL = 0x14, /* Transport marginal errors */
};

#endif /* _SCSI_SCSI_STATUS_H */