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Diffstat (limited to 'drivers/ata/libata-scsi.c')
-rw-r--r--drivers/ata/libata-scsi.c95
1 files changed, 39 insertions, 56 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index ed8be585a98f..9df1a20b77dd 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -680,7 +680,7 @@ static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc)
*/
static void ata_dump_status(struct ata_port *ap, struct ata_taskfile *tf)
{
- u8 stat = tf->command, err = tf->feature;
+ u8 stat = tf->status, err = tf->error;
if (stat & ATA_BUSY) {
ata_port_warn(ap, "status=0x%02x {Busy} ", stat);
@@ -871,8 +871,8 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
* onto sense key, asc & ascq.
*/
if (qc->err_mask ||
- tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
- ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature,
+ tf->status & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
+ ata_to_sense_error(qc->ap->print_id, tf->status, tf->error,
&sense_key, &asc, &ascq, verbose);
ata_scsi_set_sense(qc->dev, cmd, sense_key, asc, ascq);
} else {
@@ -901,13 +901,13 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
* Copy registers into sense buffer.
*/
desc[2] = 0x00;
- desc[3] = tf->feature; /* == error reg */
+ desc[3] = tf->error;
desc[5] = tf->nsect;
desc[7] = tf->lbal;
desc[9] = tf->lbam;
desc[11] = tf->lbah;
desc[12] = tf->device;
- desc[13] = tf->command; /* == status reg */
+ desc[13] = tf->status;
/*
* Fill in Extend bit, and the high order bytes
@@ -922,8 +922,8 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
}
} else {
/* Fixed sense format */
- desc[0] = tf->feature;
- desc[1] = tf->command; /* status */
+ desc[0] = tf->error;
+ desc[1] = tf->status;
desc[2] = tf->device;
desc[3] = tf->nsect;
desc[7] = 0;
@@ -972,14 +972,14 @@ static void ata_gen_ata_sense(struct ata_queued_cmd *qc)
* onto sense key, asc & ascq.
*/
if (qc->err_mask ||
- tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
- ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature,
+ tf->status & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
+ ata_to_sense_error(qc->ap->print_id, tf->status, tf->error,
&sense_key, &asc, &ascq, verbose);
ata_scsi_set_sense(dev, cmd, sense_key, asc, ascq);
} else {
/* Could not decode error */
ata_dev_warn(dev, "could not decode error status 0x%x err_mask 0x%x\n",
- tf->command, qc->err_mask);
+ tf->status, qc->err_mask);
ata_scsi_set_sense(dev, cmd, ABORTED_COMMAND, 0, 0);
return;
}
@@ -1314,21 +1314,10 @@ static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
* @plba: the LBA
* @plen: the transfer length
*/
-static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
+static inline void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
{
- u64 lba = 0;
- u32 len = 0;
-
- lba |= ((u64)cdb[2]) << 24;
- lba |= ((u64)cdb[3]) << 16;
- lba |= ((u64)cdb[4]) << 8;
- lba |= ((u64)cdb[5]);
-
- len |= ((u32)cdb[7]) << 8;
- len |= ((u32)cdb[8]);
-
- *plba = lba;
- *plen = len;
+ *plba = get_unaligned_be32(&cdb[2]);
+ *plen = get_unaligned_be16(&cdb[7]);
}
/**
@@ -1341,27 +1330,10 @@ static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
* @plba: the LBA
* @plen: the transfer length
*/
-static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
+static inline void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen)
{
- u64 lba = 0;
- u32 len = 0;
-
- lba |= ((u64)cdb[2]) << 56;
- lba |= ((u64)cdb[3]) << 48;
- lba |= ((u64)cdb[4]) << 40;
- lba |= ((u64)cdb[5]) << 32;
- lba |= ((u64)cdb[6]) << 24;
- lba |= ((u64)cdb[7]) << 16;
- lba |= ((u64)cdb[8]) << 8;
- lba |= ((u64)cdb[9]);
-
- len |= ((u32)cdb[10]) << 24;
- len |= ((u32)cdb[11]) << 16;
- len |= ((u32)cdb[12]) << 8;
- len |= ((u32)cdb[13]);
-
- *plba = lba;
- *plen = len;
+ *plba = get_unaligned_be64(&cdb[2]);
+ *plen = get_unaligned_be32(&cdb[10]);
}
/**
@@ -1390,19 +1362,22 @@ static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc)
tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
tf->protocol = ATA_PROT_NODATA;
- if (cdb[0] == VERIFY) {
+ switch (cdb[0]) {
+ case VERIFY:
if (scmd->cmd_len < 10) {
fp = 9;
goto invalid_fld;
}
scsi_10_lba_len(cdb, &block, &n_block);
- } else if (cdb[0] == VERIFY_16) {
+ break;
+ case VERIFY_16:
if (scmd->cmd_len < 16) {
fp = 15;
goto invalid_fld;
}
scsi_16_lba_len(cdb, &block, &n_block);
- } else {
+ break;
+ default:
fp = 0;
goto invalid_fld;
}
@@ -1534,8 +1509,13 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc)
int rc;
u16 fp = 0;
- if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16)
+ switch (cdb[0]) {
+ case WRITE_6:
+ case WRITE_10:
+ case WRITE_16:
tf_flags |= ATA_TFLAG_WRITE;
+ break;
+ }
/* Calculate the SCSI LBA, transfer length and FUA. */
switch (cdb[0]) {
@@ -2493,7 +2473,7 @@ static void atapi_request_sense(struct ata_queued_cmd *qc)
/* fill these in, for the case where they are -not- overwritten */
cmd->sense_buffer[0] = 0x70;
- cmd->sense_buffer[2] = qc->tf.feature >> 4;
+ cmd->sense_buffer[2] = qc->tf.error >> 4;
ata_qc_reinit(qc);
@@ -2845,7 +2825,8 @@ static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc)
* 12 and 16 byte CDBs use different offsets to
* provide the various register values.
*/
- if (cdb[0] == ATA_16) {
+ switch (cdb[0]) {
+ case ATA_16:
/*
* 16-byte CDB - may contain extended commands.
*
@@ -2871,7 +2852,8 @@ static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc)
tf->lbah = cdb[12];
tf->device = cdb[13];
tf->command = cdb[14];
- } else if (cdb[0] == ATA_12) {
+ break;
+ case ATA_12:
/*
* 12-byte CDB - incapable of extended commands.
*/
@@ -2884,7 +2866,8 @@ static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc)
tf->lbah = cdb[7];
tf->device = cdb[8];
tf->command = cdb[9];
- } else {
+ break;
+ default:
/*
* 32-byte CDB - may contain extended command fields.
*
@@ -2908,6 +2891,7 @@ static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc)
tf->device = cdb[24];
tf->command = cdb[25];
tf->auxiliary = get_unaligned_be32(&cdb[28]);
+ break;
}
/* For NCQ commands copy the tag value */
@@ -3672,7 +3656,7 @@ static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc)
goto invalid_fld;
}
- len = (cdb[7] << 8) + cdb[8];
+ len = get_unaligned_be16(&cdb[7]);
hdr_len = 8;
}
@@ -3698,7 +3682,7 @@ static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc)
if (six_byte)
bd_len = p[3];
else
- bd_len = (p[6] << 8) + p[7];
+ bd_len = get_unaligned_be16(&p[6]);
len -= hdr_len;
p += hdr_len;
@@ -3722,7 +3706,7 @@ static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc)
goto invalid_param_len;
spg = p[1];
- pg_len = (p[2] << 8) | p[3];
+ pg_len = get_unaligned_be16(&p[2]);
p += 4;
len -= 4;
} else {
@@ -3933,7 +3917,6 @@ static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd)
case MODE_SELECT:
case MODE_SELECT_10:
return ata_scsi_mode_select_xlat;
- break;
case ZBC_IN:
return ata_scsi_zbc_in_xlat;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 13:14:35 +0100