include/scsi/scsi_status.h

   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. */
  10 enum 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. */
  44 enum 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 */