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| author | Tejun Heo <htejun@gmail.com> | 2007-12-05 16:43:06 +0900 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2008-01-23 05:24:14 -0500 |
| commit | ceb0c642624f634c5b4f46b0e22df19be87a2e53 (patch) | |
| tree | a55adf01b6c00b4724a468a52fce03704bf5109f | |
| parent | 0dc36888d4422140f9eaf50f24953ec109f750a3 (diff) | |
| download | op-kernel-dev-ceb0c642624f634c5b4f46b0e22df19be87a2e53.zip op-kernel-dev-ceb0c642624f634c5b4f46b0e22df19be87a2e53.tar.gz | |
libata: add ATAPI_* cmd types and implement atapi_cmd_type()
Add ATAPI command types - ATAPI_READ, WRITE, RW_BUF, READ_CD and MISC,
and implement atapi_cmd_type() which takes SCSI opcode and returns to
which class the opcode belongs. This will be used later to improve
ATAPI handling.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
| -rw-r--r-- | include/linux/libata.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index cc4eaef..03afcd6 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -35,6 +35,7 @@ #include <linux/workqueue.h> #include <scsi/scsi_host.h> #include <linux/acpi.h> +#include <linux/cdrom.h> /* * Define if arch has non-standard setup. This is a _PCI_ standard @@ -346,6 +347,12 @@ enum { ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */ ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */ ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ + + /* ATAPI command types */ + ATAPI_READ = 0, /* READs */ + ATAPI_WRITE = 1, /* WRITEs */ + ATAPI_READ_CD = 2, /* READ CD [MSF] */ + ATAPI_MISC = 3, /* the rest */ }; enum ata_xfer_mask { @@ -1408,6 +1415,27 @@ static inline int ata_try_flush_cache(const struct ata_device *dev) ata_id_has_flush_ext(dev->id); } +static inline 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; + } +} + static inline unsigned int ac_err_mask(u8 status) { if (status & (ATA_BUSY | ATA_DRQ)) |
