[PATCH] libata: clean up variable name usage in xlat related functions
Variable names in xlat functions are quite confusing now. 'scsicmd' is used for CDB while qc->scsicmd points to struct scsi_cmnd while 'cmd' is used for struct scsi_cmnd. This patch cleans up variable names in xlat functions such that 'scmd' is used for struct scsi_cmnd and 'cdb' for CDB. Also, 'scmd' local variable is added if qc->scsicmd is used multiple times. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
parent
6fbf5ba461
commit
542b1444c5
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@ -51,7 +51,7 @@
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#define SECTOR_SIZE 512
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#define SECTOR_SIZE 512
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typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc, const u8 *scsicmd);
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typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc, const u8 *cdb);
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static struct ata_device * __ata_scsi_find_dev(struct ata_port *ap,
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static struct ata_device * __ata_scsi_find_dev(struct ata_port *ap,
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const struct scsi_device *scsidev);
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const struct scsi_device *scsidev);
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@ -935,7 +935,7 @@ int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth)
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/**
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/**
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* ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command
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* ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command
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* @qc: Storage for translated ATA taskfile
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* @qc: Storage for translated ATA taskfile
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* @scsicmd: SCSI command to translate
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* @cdb: SCSI command to translate
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*
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*
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* Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY
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* Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY
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* (to start). Perhaps these commands should be preceded by
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* (to start). Perhaps these commands should be preceded by
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@ -948,22 +948,22 @@ int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth)
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* RETURNS:
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* RETURNS:
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* Zero on success, non-zero on error.
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* Zero on success, non-zero on error.
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*/
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*/
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static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc,
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static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc,
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const u8 *scsicmd)
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const u8 *cdb)
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{
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{
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struct scsi_cmnd *scmd = qc->scsicmd;
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struct ata_taskfile *tf = &qc->tf;
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struct ata_taskfile *tf = &qc->tf;
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tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
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tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
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tf->protocol = ATA_PROT_NODATA;
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tf->protocol = ATA_PROT_NODATA;
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if (scsicmd[1] & 0x1) {
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if (cdb[1] & 0x1) {
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; /* ignore IMMED bit, violates sat-r05 */
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; /* ignore IMMED bit, violates sat-r05 */
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}
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}
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if (scsicmd[4] & 0x2)
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if (cdb[4] & 0x2)
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goto invalid_fld; /* LOEJ bit set not supported */
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goto invalid_fld; /* LOEJ bit set not supported */
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if (((scsicmd[4] >> 4) & 0xf) != 0)
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if (((cdb[4] >> 4) & 0xf) != 0)
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goto invalid_fld; /* power conditions not supported */
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goto invalid_fld; /* power conditions not supported */
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if (scsicmd[4] & 0x1) {
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if (cdb[4] & 0x1) {
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tf->nsect = 1; /* 1 sector, lba=0 */
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tf->nsect = 1; /* 1 sector, lba=0 */
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if (qc->dev->flags & ATA_DFLAG_LBA) {
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if (qc->dev->flags & ATA_DFLAG_LBA) {
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@ -996,7 +996,7 @@ static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc,
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return 0;
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return 0;
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invalid_fld:
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invalid_fld:
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ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0);
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ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
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/* "Invalid field in cbd" */
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/* "Invalid field in cbd" */
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return 1;
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return 1;
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}
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}
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@ -1005,7 +1005,7 @@ invalid_fld:
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/**
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/**
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* ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command
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* ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command
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* @qc: Storage for translated ATA taskfile
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* @qc: Storage for translated ATA taskfile
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* @scsicmd: SCSI command to translate (ignored)
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* @cdb: SCSI command to translate (ignored)
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*
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*
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* Sets up an ATA taskfile to issue FLUSH CACHE or
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* Sets up an ATA taskfile to issue FLUSH CACHE or
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* FLUSH CACHE EXT.
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* FLUSH CACHE EXT.
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@ -1016,8 +1016,7 @@ invalid_fld:
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* RETURNS:
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* RETURNS:
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* Zero on success, non-zero on error.
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* Zero on success, non-zero on error.
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*/
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*/
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static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc, const u8 *cdb)
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static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
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{
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{
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struct ata_taskfile *tf = &qc->tf;
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struct ata_taskfile *tf = &qc->tf;
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@ -1034,7 +1033,7 @@ static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc, const u8 *scs
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/**
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/**
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* scsi_6_lba_len - Get LBA and transfer length
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* scsi_6_lba_len - Get LBA and transfer length
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* @scsicmd: SCSI command to translate
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* @cdb: SCSI command to translate
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*
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*
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* Calculate LBA and transfer length for 6-byte commands.
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* Calculate LBA and transfer length for 6-byte commands.
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*
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*
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@ -1042,18 +1041,17 @@ static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc, const u8 *scs
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* @plba: the LBA
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* @plba: the LBA
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* @plen: the transfer length
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* @plen: the transfer length
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*/
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*/
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static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
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static void scsi_6_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
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{
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{
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u64 lba = 0;
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u64 lba = 0;
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u32 len = 0;
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u32 len = 0;
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VPRINTK("six-byte command\n");
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VPRINTK("six-byte command\n");
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lba |= ((u64)scsicmd[2]) << 8;
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lba |= ((u64)cdb[2]) << 8;
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lba |= ((u64)scsicmd[3]);
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lba |= ((u64)cdb[3]);
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len |= ((u32)scsicmd[4]);
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len |= ((u32)cdb[4]);
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*plba = lba;
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*plba = lba;
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*plen = len;
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*plen = len;
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@ -1061,7 +1059,7 @@ static void scsi_6_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
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/**
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/**
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* scsi_10_lba_len - Get LBA and transfer length
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* scsi_10_lba_len - Get LBA and transfer length
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* @scsicmd: SCSI command to translate
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* @cdb: SCSI command to translate
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*
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*
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* Calculate LBA and transfer length for 10-byte commands.
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* Calculate LBA and transfer length for 10-byte commands.
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*
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*
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@ -1069,21 +1067,20 @@ static void scsi_6_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
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* @plba: the LBA
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* @plba: the LBA
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* @plen: the transfer length
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* @plen: the transfer length
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*/
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*/
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static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
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static void scsi_10_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
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{
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{
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u64 lba = 0;
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u64 lba = 0;
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u32 len = 0;
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u32 len = 0;
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VPRINTK("ten-byte command\n");
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VPRINTK("ten-byte command\n");
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lba |= ((u64)scsicmd[2]) << 24;
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lba |= ((u64)cdb[2]) << 24;
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lba |= ((u64)scsicmd[3]) << 16;
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lba |= ((u64)cdb[3]) << 16;
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lba |= ((u64)scsicmd[4]) << 8;
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lba |= ((u64)cdb[4]) << 8;
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lba |= ((u64)scsicmd[5]);
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lba |= ((u64)cdb[5]);
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len |= ((u32)scsicmd[7]) << 8;
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len |= ((u32)cdb[7]) << 8;
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len |= ((u32)scsicmd[8]);
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len |= ((u32)cdb[8]);
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*plba = lba;
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*plba = lba;
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*plen = len;
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*plen = len;
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@ -1091,7 +1088,7 @@ static void scsi_10_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
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/**
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/**
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* scsi_16_lba_len - Get LBA and transfer length
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* scsi_16_lba_len - Get LBA and transfer length
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* @scsicmd: SCSI command to translate
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* @cdb: SCSI command to translate
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*
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*
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* Calculate LBA and transfer length for 16-byte commands.
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* Calculate LBA and transfer length for 16-byte commands.
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*
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*
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@ -1099,27 +1096,26 @@ static void scsi_10_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
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* @plba: the LBA
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* @plba: the LBA
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* @plen: the transfer length
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* @plen: the transfer length
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*/
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*/
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static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
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static void scsi_16_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
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{
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{
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u64 lba = 0;
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u64 lba = 0;
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u32 len = 0;
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u32 len = 0;
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VPRINTK("sixteen-byte command\n");
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VPRINTK("sixteen-byte command\n");
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lba |= ((u64)scsicmd[2]) << 56;
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lba |= ((u64)cdb[2]) << 56;
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lba |= ((u64)scsicmd[3]) << 48;
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lba |= ((u64)cdb[3]) << 48;
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lba |= ((u64)scsicmd[4]) << 40;
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lba |= ((u64)cdb[4]) << 40;
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lba |= ((u64)scsicmd[5]) << 32;
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lba |= ((u64)cdb[5]) << 32;
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lba |= ((u64)scsicmd[6]) << 24;
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lba |= ((u64)cdb[6]) << 24;
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lba |= ((u64)scsicmd[7]) << 16;
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lba |= ((u64)cdb[7]) << 16;
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lba |= ((u64)scsicmd[8]) << 8;
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lba |= ((u64)cdb[8]) << 8;
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lba |= ((u64)scsicmd[9]);
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lba |= ((u64)cdb[9]);
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len |= ((u32)scsicmd[10]) << 24;
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len |= ((u32)cdb[10]) << 24;
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len |= ((u32)scsicmd[11]) << 16;
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len |= ((u32)cdb[11]) << 16;
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len |= ((u32)scsicmd[12]) << 8;
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len |= ((u32)cdb[12]) << 8;
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len |= ((u32)scsicmd[13]);
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len |= ((u32)cdb[13]);
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*plba = lba;
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*plba = lba;
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*plen = len;
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*plen = len;
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@ -1128,7 +1124,7 @@ static void scsi_16_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
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/**
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/**
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* ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one
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* ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one
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* @qc: Storage for translated ATA taskfile
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* @qc: Storage for translated ATA taskfile
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* @scsicmd: SCSI command to translate
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* @cdb: SCSI command to translate
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*
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*
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* Converts SCSI VERIFY command to an ATA READ VERIFY command.
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* Converts SCSI VERIFY command to an ATA READ VERIFY command.
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*
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*
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@ -1138,9 +1134,9 @@ static void scsi_16_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
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* RETURNS:
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* RETURNS:
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* Zero on success, non-zero on error.
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* Zero on success, non-zero on error.
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*/
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*/
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static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc, const u8 *cdb)
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static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
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{
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{
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struct scsi_cmnd *scmd = qc->scsicmd;
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struct ata_taskfile *tf = &qc->tf;
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struct ata_taskfile *tf = &qc->tf;
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struct ata_device *dev = qc->dev;
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struct ata_device *dev = qc->dev;
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u64 dev_sectors = qc->dev->n_sectors;
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u64 dev_sectors = qc->dev->n_sectors;
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@ -1150,10 +1146,10 @@ static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc, const u8 *sc
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tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
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tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
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tf->protocol = ATA_PROT_NODATA;
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tf->protocol = ATA_PROT_NODATA;
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if (scsicmd[0] == VERIFY)
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if (cdb[0] == VERIFY)
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scsi_10_lba_len(scsicmd, &block, &n_block);
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scsi_10_lba_len(cdb, &block, &n_block);
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else if (scsicmd[0] == VERIFY_16)
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else if (cdb[0] == VERIFY_16)
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scsi_16_lba_len(scsicmd, &block, &n_block);
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scsi_16_lba_len(cdb, &block, &n_block);
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else
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else
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goto invalid_fld;
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goto invalid_fld;
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@ -1229,24 +1225,24 @@ static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc, const u8 *sc
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return 0;
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return 0;
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invalid_fld:
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invalid_fld:
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ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0);
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ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
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/* "Invalid field in cbd" */
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/* "Invalid field in cbd" */
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return 1;
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return 1;
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out_of_range:
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out_of_range:
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ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x21, 0x0);
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ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0);
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/* "Logical Block Address out of range" */
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/* "Logical Block Address out of range" */
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return 1;
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return 1;
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nothing_to_do:
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nothing_to_do:
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qc->scsicmd->result = SAM_STAT_GOOD;
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scmd->result = SAM_STAT_GOOD;
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return 1;
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return 1;
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}
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}
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/**
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/**
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* ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one
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* ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one
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* @qc: Storage for translated ATA taskfile
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* @qc: Storage for translated ATA taskfile
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* @scsicmd: SCSI command to translate
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* @cdb: SCSI command to translate
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*
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*
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* Converts any of six SCSI read/write commands into the
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* Converts any of six SCSI read/write commands into the
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* ATA counterpart, including starting sector (LBA),
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* ATA counterpart, including starting sector (LBA),
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* RETURNS:
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* RETURNS:
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* Zero on success, non-zero on error.
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* Zero on success, non-zero on error.
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*/
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*/
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static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *cdb)
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static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
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{
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{
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struct scsi_cmnd *scmd = qc->scsicmd;
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unsigned int tf_flags = 0;
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unsigned int tf_flags = 0;
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u64 block;
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u64 block;
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u32 n_block;
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u32 n_block;
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int rc;
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int rc;
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if (scsicmd[0] == WRITE_10 || scsicmd[0] == WRITE_6 ||
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if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16)
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scsicmd[0] == WRITE_16)
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tf_flags |= ATA_TFLAG_WRITE;
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tf_flags |= ATA_TFLAG_WRITE;
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/* Calculate the SCSI LBA, transfer length and FUA. */
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/* Calculate the SCSI LBA, transfer length and FUA. */
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switch (scsicmd[0]) {
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switch (cdb[0]) {
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case READ_10:
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case READ_10:
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case WRITE_10:
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case WRITE_10:
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scsi_10_lba_len(scsicmd, &block, &n_block);
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scsi_10_lba_len(cdb, &block, &n_block);
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if (unlikely(scsicmd[1] & (1 << 3)))
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if (unlikely(cdb[1] & (1 << 3)))
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tf_flags |= ATA_TFLAG_FUA;
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tf_flags |= ATA_TFLAG_FUA;
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break;
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break;
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case READ_6:
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case READ_6:
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case WRITE_6:
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case WRITE_6:
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||||||
scsi_6_lba_len(scsicmd, &block, &n_block);
|
scsi_6_lba_len(cdb, &block, &n_block);
|
||||||
|
|
||||||
/* for 6-byte r/w commands, transfer length 0
|
/* for 6-byte r/w commands, transfer length 0
|
||||||
* means 256 blocks of data, not 0 block.
|
* means 256 blocks of data, not 0 block.
|
||||||
|
@ -1294,8 +1289,8 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm
|
||||||
break;
|
break;
|
||||||
case READ_16:
|
case READ_16:
|
||||||
case WRITE_16:
|
case WRITE_16:
|
||||||
scsi_16_lba_len(scsicmd, &block, &n_block);
|
scsi_16_lba_len(cdb, &block, &n_block);
|
||||||
if (unlikely(scsicmd[1] & (1 << 3)))
|
if (unlikely(cdb[1] & (1 << 3)))
|
||||||
tf_flags |= ATA_TFLAG_FUA;
|
tf_flags |= ATA_TFLAG_FUA;
|
||||||
break;
|
break;
|
||||||
default:
|
default:
|
||||||
|
@ -1326,17 +1321,17 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm
|
||||||
goto out_of_range;
|
goto out_of_range;
|
||||||
/* treat all other errors as -EINVAL, fall through */
|
/* treat all other errors as -EINVAL, fall through */
|
||||||
invalid_fld:
|
invalid_fld:
|
||||||
ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0);
|
ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
|
||||||
/* "Invalid field in cbd" */
|
/* "Invalid field in cbd" */
|
||||||
return 1;
|
return 1;
|
||||||
|
|
||||||
out_of_range:
|
out_of_range:
|
||||||
ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x21, 0x0);
|
ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x21, 0x0);
|
||||||
/* "Logical Block Address out of range" */
|
/* "Logical Block Address out of range" */
|
||||||
return 1;
|
return 1;
|
||||||
|
|
||||||
nothing_to_do:
|
nothing_to_do:
|
||||||
qc->scsicmd->result = SAM_STAT_GOOD;
|
scmd->result = SAM_STAT_GOOD;
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -1456,7 +1451,7 @@ static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd,
|
||||||
ata_xlat_func_t xlat_func)
|
ata_xlat_func_t xlat_func)
|
||||||
{
|
{
|
||||||
struct ata_queued_cmd *qc;
|
struct ata_queued_cmd *qc;
|
||||||
u8 *scsicmd = cmd->cmnd;
|
u8 *cdb = cmd->cmnd;
|
||||||
int is_io = xlat_func == ata_scsi_rw_xlat;
|
int is_io = xlat_func == ata_scsi_rw_xlat;
|
||||||
|
|
||||||
VPRINTK("ENTER\n");
|
VPRINTK("ENTER\n");
|
||||||
|
@ -1488,7 +1483,7 @@ static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd,
|
||||||
|
|
||||||
qc->complete_fn = ata_scsi_qc_complete;
|
qc->complete_fn = ata_scsi_qc_complete;
|
||||||
|
|
||||||
if (xlat_func(qc, scsicmd))
|
if (xlat_func(qc, cdb))
|
||||||
goto early_finish;
|
goto early_finish;
|
||||||
|
|
||||||
/* select device, send command to hardware */
|
/* select device, send command to hardware */
|
||||||
|
@ -2344,7 +2339,7 @@ static void atapi_qc_complete(struct ata_queued_cmd *qc)
|
||||||
/**
|
/**
|
||||||
* atapi_xlat - Initialize PACKET taskfile
|
* atapi_xlat - Initialize PACKET taskfile
|
||||||
* @qc: command structure to be initialized
|
* @qc: command structure to be initialized
|
||||||
* @scsicmd: SCSI CDB associated with this PACKET command
|
* @cdb: SCSI CDB associated with this PACKET command
|
||||||
*
|
*
|
||||||
* LOCKING:
|
* LOCKING:
|
||||||
* spin_lock_irqsave(host lock)
|
* spin_lock_irqsave(host lock)
|
||||||
|
@ -2352,25 +2347,24 @@ static void atapi_qc_complete(struct ata_queued_cmd *qc)
|
||||||
* RETURNS:
|
* RETURNS:
|
||||||
* Zero on success, non-zero on failure.
|
* Zero on success, non-zero on failure.
|
||||||
*/
|
*/
|
||||||
|
static unsigned int atapi_xlat(struct ata_queued_cmd *qc, const u8 *cdb)
|
||||||
static unsigned int atapi_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
|
|
||||||
{
|
{
|
||||||
struct scsi_cmnd *cmd = qc->scsicmd;
|
struct scsi_cmnd *scmd = qc->scsicmd;
|
||||||
struct ata_device *dev = qc->dev;
|
struct ata_device *dev = qc->dev;
|
||||||
int using_pio = (dev->flags & ATA_DFLAG_PIO);
|
int using_pio = (dev->flags & ATA_DFLAG_PIO);
|
||||||
int nodata = (cmd->sc_data_direction == DMA_NONE);
|
int nodata = (scmd->sc_data_direction == DMA_NONE);
|
||||||
|
|
||||||
if (!using_pio)
|
if (!using_pio)
|
||||||
/* Check whether ATAPI DMA is safe */
|
/* Check whether ATAPI DMA is safe */
|
||||||
if (ata_check_atapi_dma(qc))
|
if (ata_check_atapi_dma(qc))
|
||||||
using_pio = 1;
|
using_pio = 1;
|
||||||
|
|
||||||
memcpy(&qc->cdb, scsicmd, dev->cdb_len);
|
memcpy(&qc->cdb, cdb, dev->cdb_len);
|
||||||
|
|
||||||
qc->complete_fn = atapi_qc_complete;
|
qc->complete_fn = atapi_qc_complete;
|
||||||
|
|
||||||
qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
|
qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
|
||||||
if (cmd->sc_data_direction == DMA_TO_DEVICE) {
|
if (scmd->sc_data_direction == DMA_TO_DEVICE) {
|
||||||
qc->tf.flags |= ATA_TFLAG_WRITE;
|
qc->tf.flags |= ATA_TFLAG_WRITE;
|
||||||
DPRINTK("direction: write\n");
|
DPRINTK("direction: write\n");
|
||||||
}
|
}
|
||||||
|
@ -2392,12 +2386,12 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
|
||||||
qc->tf.protocol = ATA_PROT_ATAPI_DMA;
|
qc->tf.protocol = ATA_PROT_ATAPI_DMA;
|
||||||
qc->tf.feature |= ATAPI_PKT_DMA;
|
qc->tf.feature |= ATAPI_PKT_DMA;
|
||||||
|
|
||||||
if (atapi_dmadir && (cmd->sc_data_direction != DMA_TO_DEVICE))
|
if (atapi_dmadir && (scmd->sc_data_direction != DMA_TO_DEVICE))
|
||||||
/* some SATA bridges need us to indicate data xfer direction */
|
/* some SATA bridges need us to indicate data xfer direction */
|
||||||
qc->tf.feature |= ATAPI_DMADIR;
|
qc->tf.feature |= ATAPI_DMADIR;
|
||||||
}
|
}
|
||||||
|
|
||||||
qc->nbytes = cmd->request_bufflen;
|
qc->nbytes = scmd->request_bufflen;
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
@ -2517,28 +2511,27 @@ ata_scsi_map_proto(u8 byte1)
|
||||||
/**
|
/**
|
||||||
* ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile
|
* ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile
|
||||||
* @qc: command structure to be initialized
|
* @qc: command structure to be initialized
|
||||||
* @scsicmd: SCSI command to convert
|
* @cdb: SCSI command to convert
|
||||||
*
|
*
|
||||||
* Handles either 12 or 16-byte versions of the CDB.
|
* Handles either 12 or 16-byte versions of the CDB.
|
||||||
*
|
*
|
||||||
* RETURNS:
|
* RETURNS:
|
||||||
* Zero on success, non-zero on failure.
|
* Zero on success, non-zero on failure.
|
||||||
*/
|
*/
|
||||||
static unsigned int
|
static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *cdb)
|
||||||
ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd)
|
|
||||||
{
|
{
|
||||||
struct ata_taskfile *tf = &(qc->tf);
|
struct ata_taskfile *tf = &(qc->tf);
|
||||||
struct scsi_cmnd *cmd = qc->scsicmd;
|
struct scsi_cmnd *scmd = qc->scsicmd;
|
||||||
struct ata_device *dev = qc->dev;
|
struct ata_device *dev = qc->dev;
|
||||||
|
|
||||||
if ((tf->protocol = ata_scsi_map_proto(scsicmd[1])) == ATA_PROT_UNKNOWN)
|
if ((tf->protocol = ata_scsi_map_proto(cdb[1])) == ATA_PROT_UNKNOWN)
|
||||||
goto invalid_fld;
|
goto invalid_fld;
|
||||||
|
|
||||||
/* We may not issue DMA commands if no DMA mode is set */
|
/* We may not issue DMA commands if no DMA mode is set */
|
||||||
if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0)
|
if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0)
|
||||||
goto invalid_fld;
|
goto invalid_fld;
|
||||||
|
|
||||||
if (scsicmd[1] & 0xe0)
|
if (cdb[1] & 0xe0)
|
||||||
/* PIO multi not supported yet */
|
/* PIO multi not supported yet */
|
||||||
goto invalid_fld;
|
goto invalid_fld;
|
||||||
|
|
||||||
|
@ -2546,18 +2539,18 @@ ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd)
|
||||||
* 12 and 16 byte CDBs use different offsets to
|
* 12 and 16 byte CDBs use different offsets to
|
||||||
* provide the various register values.
|
* provide the various register values.
|
||||||
*/
|
*/
|
||||||
if (scsicmd[0] == ATA_16) {
|
if (cdb[0] == ATA_16) {
|
||||||
/*
|
/*
|
||||||
* 16-byte CDB - may contain extended commands.
|
* 16-byte CDB - may contain extended commands.
|
||||||
*
|
*
|
||||||
* If that is the case, copy the upper byte register values.
|
* If that is the case, copy the upper byte register values.
|
||||||
*/
|
*/
|
||||||
if (scsicmd[1] & 0x01) {
|
if (cdb[1] & 0x01) {
|
||||||
tf->hob_feature = scsicmd[3];
|
tf->hob_feature = cdb[3];
|
||||||
tf->hob_nsect = scsicmd[5];
|
tf->hob_nsect = cdb[5];
|
||||||
tf->hob_lbal = scsicmd[7];
|
tf->hob_lbal = cdb[7];
|
||||||
tf->hob_lbam = scsicmd[9];
|
tf->hob_lbam = cdb[9];
|
||||||
tf->hob_lbah = scsicmd[11];
|
tf->hob_lbah = cdb[11];
|
||||||
tf->flags |= ATA_TFLAG_LBA48;
|
tf->flags |= ATA_TFLAG_LBA48;
|
||||||
} else
|
} else
|
||||||
tf->flags &= ~ATA_TFLAG_LBA48;
|
tf->flags &= ~ATA_TFLAG_LBA48;
|
||||||
|
@ -2565,26 +2558,26 @@ ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd)
|
||||||
/*
|
/*
|
||||||
* Always copy low byte, device and command registers.
|
* Always copy low byte, device and command registers.
|
||||||
*/
|
*/
|
||||||
tf->feature = scsicmd[4];
|
tf->feature = cdb[4];
|
||||||
tf->nsect = scsicmd[6];
|
tf->nsect = cdb[6];
|
||||||
tf->lbal = scsicmd[8];
|
tf->lbal = cdb[8];
|
||||||
tf->lbam = scsicmd[10];
|
tf->lbam = cdb[10];
|
||||||
tf->lbah = scsicmd[12];
|
tf->lbah = cdb[12];
|
||||||
tf->device = scsicmd[13];
|
tf->device = cdb[13];
|
||||||
tf->command = scsicmd[14];
|
tf->command = cdb[14];
|
||||||
} else {
|
} else {
|
||||||
/*
|
/*
|
||||||
* 12-byte CDB - incapable of extended commands.
|
* 12-byte CDB - incapable of extended commands.
|
||||||
*/
|
*/
|
||||||
tf->flags &= ~ATA_TFLAG_LBA48;
|
tf->flags &= ~ATA_TFLAG_LBA48;
|
||||||
|
|
||||||
tf->feature = scsicmd[3];
|
tf->feature = cdb[3];
|
||||||
tf->nsect = scsicmd[4];
|
tf->nsect = cdb[4];
|
||||||
tf->lbal = scsicmd[5];
|
tf->lbal = cdb[5];
|
||||||
tf->lbam = scsicmd[6];
|
tf->lbam = cdb[6];
|
||||||
tf->lbah = scsicmd[7];
|
tf->lbah = cdb[7];
|
||||||
tf->device = scsicmd[8];
|
tf->device = cdb[8];
|
||||||
tf->command = scsicmd[9];
|
tf->command = cdb[9];
|
||||||
}
|
}
|
||||||
/*
|
/*
|
||||||
* If slave is possible, enforce correct master/slave bit
|
* If slave is possible, enforce correct master/slave bit
|
||||||
|
@ -2611,7 +2604,7 @@ ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd)
|
||||||
*/
|
*/
|
||||||
tf->flags |= (ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE);
|
tf->flags |= (ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE);
|
||||||
|
|
||||||
if (cmd->sc_data_direction == DMA_TO_DEVICE)
|
if (scmd->sc_data_direction == DMA_TO_DEVICE)
|
||||||
tf->flags |= ATA_TFLAG_WRITE;
|
tf->flags |= ATA_TFLAG_WRITE;
|
||||||
|
|
||||||
/*
|
/*
|
||||||
|
@ -2620,7 +2613,7 @@ ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd)
|
||||||
* TODO: find out if we need to do more here to
|
* TODO: find out if we need to do more here to
|
||||||
* cover scatter/gather case.
|
* cover scatter/gather case.
|
||||||
*/
|
*/
|
||||||
qc->nsect = cmd->request_bufflen / ATA_SECT_SIZE;
|
qc->nsect = scmd->request_bufflen / ATA_SECT_SIZE;
|
||||||
|
|
||||||
/* request result TF */
|
/* request result TF */
|
||||||
qc->flags |= ATA_QCFLAG_RESULT_TF;
|
qc->flags |= ATA_QCFLAG_RESULT_TF;
|
||||||
|
@ -2628,7 +2621,7 @@ ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd)
|
||||||
return 0;
|
return 0;
|
||||||
|
|
||||||
invalid_fld:
|
invalid_fld:
|
||||||
ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x00);
|
ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00);
|
||||||
/* "Invalid field in cdb" */
|
/* "Invalid field in cdb" */
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
|
@ -2701,7 +2694,7 @@ static inline void ata_scsi_dump_cdb(struct ata_port *ap,
|
||||||
#endif
|
#endif
|
||||||
}
|
}
|
||||||
|
|
||||||
static inline int __ata_scsi_queuecmd(struct scsi_cmnd *cmd,
|
static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd,
|
||||||
void (*done)(struct scsi_cmnd *),
|
void (*done)(struct scsi_cmnd *),
|
||||||
struct ata_device *dev)
|
struct ata_device *dev)
|
||||||
{
|
{
|
||||||
|
@ -2709,14 +2702,14 @@ static inline int __ata_scsi_queuecmd(struct scsi_cmnd *cmd,
|
||||||
|
|
||||||
if (dev->class == ATA_DEV_ATA) {
|
if (dev->class == ATA_DEV_ATA) {
|
||||||
ata_xlat_func_t xlat_func = ata_get_xlat_func(dev,
|
ata_xlat_func_t xlat_func = ata_get_xlat_func(dev,
|
||||||
cmd->cmnd[0]);
|
scmd->cmnd[0]);
|
||||||
|
|
||||||
if (xlat_func)
|
if (xlat_func)
|
||||||
rc = ata_scsi_translate(dev, cmd, done, xlat_func);
|
rc = ata_scsi_translate(dev, scmd, done, xlat_func);
|
||||||
else
|
else
|
||||||
ata_scsi_simulate(dev, cmd, done);
|
ata_scsi_simulate(dev, scmd, done);
|
||||||
} else
|
} else
|
||||||
rc = ata_scsi_translate(dev, cmd, done, atapi_xlat);
|
rc = ata_scsi_translate(dev, scmd, done, atapi_xlat);
|
||||||
|
|
||||||
return rc;
|
return rc;
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in New Issue