diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 2db5c9c9ca1..e9b69ba489d 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -326,6 +326,39 @@ static void ata_force_horkage(struct ata_device *dev) } /** + * atapi_cmd_type - Determine ATAPI command type from SCSI opcode + * @opcode: SCSI opcode + * + * Determine ATAPI command type from @opcode. + * + * LOCKING: + * None. + * + * RETURNS: + * ATAPI_{READ|WRITE|READ_CD|PASS_THRU|MISC} + */ +int atapi_cmd_type(u8 opcode) +{ + switch (opcode) { + case GPCMD_READ_10: + case GPCMD_READ_12: + return ATAPI_READ; + + case GPCMD_WRITE_10: + case GPCMD_WRITE_12: + case GPCMD_WRITE_AND_VERIFY_10: + return ATAPI_WRITE; + + case GPCMD_READ_CD: + case GPCMD_READ_CD_MSF: + return ATAPI_READ_CD; + + default: + return ATAPI_MISC; + } +} + +/** * ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure * @tf: Taskfile to convert * @pmp: Port multiplier port @@ -7774,6 +7807,7 @@ EXPORT_SYMBOL_GPL(ata_tf_read); EXPORT_SYMBOL_GPL(ata_noop_dev_select); EXPORT_SYMBOL_GPL(ata_std_dev_select); EXPORT_SYMBOL_GPL(sata_print_link_status); +EXPORT_SYMBOL_GPL(atapi_cmd_type); EXPORT_SYMBOL_GPL(ata_tf_to_fis); EXPORT_SYMBOL_GPL(ata_tf_from_fis); EXPORT_SYMBOL_GPL(ata_pack_xfermask); |