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libata: reimplement ata_acpi_cbl_80wire() using ata_acpi_gtm_xfermask()

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Reimplement ata_acpi_cbl_80wire() using ata_acpi_gtm_xfermask() and
while at it relocate the function below ata_acpi_gtm_xfermask().

New ata_acpi_cbl_80wire() implementation takes @gtm, in both pata_via
and pata_amd, use the initial GTM value.  Both are trying to peek
initial BIOS configuration, so using initial caching value makes
sense.  This fixes ACPI part of cable detection in pata_amd which
previously always returned 0 because configuring PIO0 during reset
clears DMA configuration.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2007-12-18 16:33:06 +09:00 • committed by Jeff Garzik
parent a0f79b929a
commit 021ee9a6da
4 changed files with 26 additions and 29 deletions
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10
include/linux/libata.h
View file

@ -968,18 +968,16 @@ static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
return &ap->__acpi_init_gtm;
return NULL;
}
extern int ata_acpi_cbl_80wire(struct ata_port *ap);
int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
const struct ata_acpi_gtm *gtm);
int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
#else
static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
{
return NULL;
}
static inline int ata_acpi_cbl_80wire(struct ata_port *ap) { return 0; }
static inline int ata_acpi_stm(const struct ata_port *ap,
struct ata_acpi_gtm *stm)
@ -998,6 +996,12 @@ static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
{
return 0;
}
static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
const struct ata_acpi_gtm *gtm)
{
return 0;
}
#endif
#ifdef CONFIG_PCI