diff options
Diffstat (limited to 'include/scsi/scsi.h')
| -rw-r--r-- | include/scsi/scsi.h | 159 |
1 files changed, 49 insertions, 110 deletions
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index 246ced401683..3e46859774c8 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -11,6 +11,7 @@ #include <linux/kernel.h> #include <scsi/scsi_common.h> #include <scsi/scsi_proto.h> +#include <scsi/scsi_status.h> struct scsi_cmnd; @@ -30,32 +31,6 @@ enum scsi_timeouts { */ #define SCAN_WILD_CARD ~0 -/** scsi_status_is_good - check the status return. - * - * @status: the status passed up from the driver (including host and - * driver components) - * - * This returns true for known good conditions that may be treated as - * command completed normally - */ -static inline int scsi_status_is_good(int status) -{ - /* - * FIXME: bit0 is listed as reserved in SCSI-2, but is - * significant in SCSI-3. For now, we follow the SCSI-2 - * behaviour and ignore reserved bits. - */ - status &= 0xfe; - return ((status == SAM_STAT_GOOD) || - (status == SAM_STAT_CONDITION_MET) || - /* Next two "intermediate" statuses are obsolete in SAM-4 */ - (status == SAM_STAT_INTERMEDIATE) || - (status == SAM_STAT_INTERMEDIATE_CONDITION_MET) || - /* FIXME: this is obsolete in SAM-3 */ - (status == SAM_STAT_COMMAND_TERMINATED)); -} - - /* * standard mode-select header prepended to all mode-select commands */ @@ -88,94 +63,31 @@ static inline int scsi_is_wlun(u64 lun) return (lun & 0xff00) == SCSI_W_LUN_BASE; } +/** + * scsi_status_is_check_condition - check the status return. + * + * @status: the status passed up from the driver (including host and + * driver components) + * + * This returns true if the status code is SAM_STAT_CHECK_CONDITION. + */ +static inline int scsi_status_is_check_condition(int status) +{ + if (status < 0) + return false; + status &= 0xfe; + return status == SAM_STAT_CHECK_CONDITION; +} /* - * MESSAGE CODES + * Extended message codes. */ - -#define COMMAND_COMPLETE 0x00 -#define EXTENDED_MESSAGE 0x01 #define EXTENDED_MODIFY_DATA_POINTER 0x00 #define EXTENDED_SDTR 0x01 #define EXTENDED_EXTENDED_IDENTIFY 0x02 /* SCSI-I only */ #define EXTENDED_WDTR 0x03 #define EXTENDED_PPR 0x04 #define EXTENDED_MODIFY_BIDI_DATA_PTR 0x05 -#define SAVE_POINTERS 0x02 -#define RESTORE_POINTERS 0x03 -#define DISCONNECT 0x04 -#define INITIATOR_ERROR 0x05 -#define ABORT_TASK_SET 0x06 -#define MESSAGE_REJECT 0x07 -#define NOP 0x08 -#define MSG_PARITY_ERROR 0x09 -#define LINKED_CMD_COMPLETE 0x0a -#define LINKED_FLG_CMD_COMPLETE 0x0b -#define TARGET_RESET 0x0c -#define ABORT_TASK 0x0d -#define CLEAR_TASK_SET 0x0e -#define INITIATE_RECOVERY 0x0f /* SCSI-II only */ -#define RELEASE_RECOVERY 0x10 /* SCSI-II only */ -#define TERMINATE_IO_PROC 0x11 /* SCSI-II only */ -#define CLEAR_ACA 0x16 -#define LOGICAL_UNIT_RESET 0x17 -#define SIMPLE_QUEUE_TAG 0x20 -#define HEAD_OF_QUEUE_TAG 0x21 -#define ORDERED_QUEUE_TAG 0x22 -#define IGNORE_WIDE_RESIDUE 0x23 -#define ACA 0x24 -#define QAS_REQUEST 0x55 - -/* Old SCSI2 names, don't use in new code */ -#define BUS_DEVICE_RESET TARGET_RESET -#define ABORT ABORT_TASK_SET - -/* - * Host byte codes - */ - -#define DID_OK 0x00 /* NO error */ -#define DID_NO_CONNECT 0x01 /* Couldn't connect before timeout period */ -#define DID_BUS_BUSY 0x02 /* BUS stayed busy through time out period */ -#define DID_TIME_OUT 0x03 /* TIMED OUT for other reason */ -#define DID_BAD_TARGET 0x04 /* BAD target. */ -#define DID_ABORT 0x05 /* Told to abort for some other reason */ -#define DID_PARITY 0x06 /* Parity error */ -#define DID_ERROR 0x07 /* Internal error */ -#define DID_RESET 0x08 /* Reset by somebody. */ -#define DID_BAD_INTR 0x09 /* Got an interrupt we weren't expecting. */ -#define DID_PASSTHROUGH 0x0a /* Force command past mid-layer */ -#define DID_SOFT_ERROR 0x0b /* The low level driver just wish a retry */ -#define DID_IMM_RETRY 0x0c /* Retry without decrementing retry count */ -#define DID_REQUEUE 0x0d /* Requeue command (no immediate retry) also - * without decrementing the retry count */ -#define 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 */ -#define DID_TRANSPORT_FAILFAST 0x0f /* Transport class fastfailed the io */ -#define DID_TARGET_FAILURE 0x10 /* Permanent target failure, do not retry on - * other paths */ -#define DID_NEXUS_FAILURE 0x11 /* Permanent nexus failure, retry on other - * paths might yield different results */ -#define DID_ALLOC_FAILURE 0x12 /* Space allocation on the device failed */ -#define DID_MEDIUM_ERROR 0x13 /* Medium error */ -#define DID_TRANSPORT_MARGINAL 0x14 /* Transport marginal errors */ -#define DRIVER_OK 0x00 /* Driver status */ - -/* - * These indicate the error that occurred, and what is available. - */ - -#define DRIVER_BUSY 0x01 -#define DRIVER_SOFT 0x02 -#define DRIVER_MEDIA 0x03 -#define DRIVER_ERROR 0x04 - -#define DRIVER_INVALID 0x05 -#define DRIVER_TIMEOUT 0x06 -#define DRIVER_HARD 0x07 -#define DRIVER_SENSE 0x08 /* * Internal return values. @@ -206,14 +118,10 @@ enum scsi_disposition { * These are set by: * * status byte = set from target device - * msg_byte = return status from host adapter itself. + * msg_byte (unused) * host_byte = set by low-level driver to indicate status. - * driver_byte = set by mid-level. */ -#define status_byte(result) (((result) >> 1) & 0x7f) -#define msg_byte(result) (((result) >> 8) & 0xff) #define host_byte(result) (((result) >> 16) & 0xff) -#define driver_byte(result) (((result) >> 24) & 0xff) #define sense_class(sense) (((sense) >> 4) & 0x7) #define sense_error(sense) ((sense) & 0xf) @@ -277,4 +185,35 @@ enum scsi_disposition { /* Used to obtain the PCI location of a device */ #define SCSI_IOCTL_GET_PCI 0x5387 +/** scsi_status_is_good - check the status return. + * + * @status: the status passed up from the driver (including host and + * driver components) + * + * This returns true for known good conditions that may be treated as + * command completed normally + */ +static inline bool scsi_status_is_good(int status) +{ + if (status < 0) + return false; + + if (host_byte(status) == DID_NO_CONNECT) + return false; + + /* + * FIXME: bit0 is listed as reserved in SCSI-2, but is + * significant in SCSI-3. For now, we follow the SCSI-2 + * behaviour and ignore reserved bits. + */ + status &= 0xfe; + return ((status == SAM_STAT_GOOD) || + (status == SAM_STAT_CONDITION_MET) || + /* Next two "intermediate" statuses are obsolete in SAM-4 */ + (status == SAM_STAT_INTERMEDIATE) || + (status == SAM_STAT_INTERMEDIATE_CONDITION_MET) || + /* FIXME: this is obsolete in SAM-3 */ + (status == SAM_STAT_COMMAND_TERMINATED)); +} + #endif /* _SCSI_SCSI_H */ |