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libata: export xfermode / PATA timing related functions

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Export the following xfermode related functions.

* ata_pack_xfermask()
* ata_unpack_xfermask()
* ata_xfer_mask2mode()
* ata_xfer_mode2mask()
* ata_xfer_mode2shift()
* ata_mode_string()
* ata_id_xfermask()
* ata_timing_find_mode()

These functions will be used later by LLD updates.  While at it,
change unsigned short @speed to u8 @xfer_mode in
ata_timing_find_mode() for consistency.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2007-11-27 19:43:39 +09:00 • committed by Jeff Garzik
parent f8ab6d8e15
commit 6357357cae
2 changed files with 29 additions and 14 deletions
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10
include/linux/libata.h
View file

@ -851,6 +851,15 @@ extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
extern void ata_tf_to_fis(const struct ata_taskfile *tf,
u8 pmp, int is_cmd, u8 *fis);
extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
extern unsigned int ata_pack_xfermask(unsigned int pio_mask,
unsigned int mwdma_mask, unsigned int udma_mask);
extern void ata_unpack_xfermask(unsigned int xfer_mask, unsigned int *pio_mask,
unsigned int *mwdma_mask, unsigned int *udma_mask);
extern u8 ata_xfer_mask2mode(unsigned int xfer_mask);
extern unsigned int ata_xfer_mode2mask(u8 xfer_mode);
extern int ata_xfer_mode2shift(unsigned int xfer_mode);
extern const char *ata_mode_string(unsigned int xfer_mask);
extern unsigned int ata_id_xfermask(const u16 *id);
extern void ata_noop_dev_select(struct ata_port *ap, unsigned int device);
extern void ata_std_dev_select(struct ata_port *ap, unsigned int device);
extern u8 ata_check_status(struct ata_port *ap);
@ -920,6 +929,7 @@ extern int ata_cable_unknown(struct ata_port *ap);
*/
extern unsigned int ata_pio_need_iordy(const struct ata_device *);
extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
extern int ata_timing_compute(struct ata_device *, unsigned short,
struct ata_timing *, int, int);
extern void ata_timing_merge(const struct ata_timing *,