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| author | Tejun Heo <htejun@gmail.com> | 2008-03-27 10:14:23 (GMT) |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-04-17 19:44:20 (GMT) |
| commit | a5987e0a1b569146ed9cfa0a8c275a21b344fcaa (patch) | |
| tree | 23c6f0e4ac2e521fdcb87aadf214ad8987b67b22 /drivers | |
| parent | 06993d2237da45615b5a9a4dde3f344ce97ca17d (diff) | |
| download | linux-a5987e0a1b569146ed9cfa0a8c275a21b344fcaa.tar.xz | |
libata: make ata_tf_to_lba[48]() generic
ata_tf_to_lba[48]() currently return LBA in tf + 1 for
ata_read_native_max_address(). Make them return LBA and make it
global so that it can be used to read LBA off TF for other purposes.
ata_read_native_max_address() now adds 1 itself.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/libata-core.c | 12 | ||||
| -rw-r--r-- | drivers/ata/libata.h | 2 |
2 files changed, 8 insertions, 6 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 9121cc4..4d78f5d 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1211,7 +1211,7 @@ static u64 ata_id_n_sectors(const u16 *id) } } -static u64 ata_tf_to_lba48(struct ata_taskfile *tf) +u64 ata_tf_to_lba48(const struct ata_taskfile *tf) { u64 sectors = 0; @@ -1222,10 +1222,10 @@ static u64 ata_tf_to_lba48(struct ata_taskfile *tf) sectors |= (tf->lbam & 0xff) << 8; sectors |= (tf->lbal & 0xff); - return ++sectors; + return sectors; } -static u64 ata_tf_to_lba(struct ata_taskfile *tf) +u64 ata_tf_to_lba(const struct ata_taskfile *tf) { u64 sectors = 0; @@ -1234,7 +1234,7 @@ static u64 ata_tf_to_lba(struct ata_taskfile *tf) sectors |= (tf->lbam & 0xff) << 8; sectors |= (tf->lbal & 0xff); - return ++sectors; + return sectors; } /** @@ -1279,9 +1279,9 @@ static int ata_read_native_max_address(struct ata_device *dev, u64 *max_sectors) } if (lba48) - *max_sectors = ata_tf_to_lba48(&tf); + *max_sectors = ata_tf_to_lba48(&tf) + 1; else - *max_sectors = ata_tf_to_lba(&tf); + *max_sectors = ata_tf_to_lba(&tf) + 1; if (dev->horkage & ATA_HORKAGE_HPA_SIZE) (*max_sectors)--; return 0; diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index a69f663..5e8d035 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -61,6 +61,8 @@ extern int libata_fua; extern int libata_noacpi; extern int libata_allow_tpm; extern void ata_force_cbl(struct ata_port *ap); +extern u64 ata_tf_to_lba(const struct ata_taskfile *tf); +extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf); extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev); extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, u64 block, u32 n_block, unsigned int tf_flags, |