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authorTejun Heo <htejun@gmail.com>2007-12-18 16:33:03 +0900
committerJeff Garzik <jeff@garzik.org>2008-01-23 05:24:12 -0500
commit7c77fa4d51b1480bcec2e898c94d6912fe063c16 (patch)
treed7d18fb22c8df2425878d02f4b415c06efa56457 /include
parent9cde9ed151e170f2e2a530f7ec0032dfbe9f443b (diff)
libata: separate out ata_acpi_gtm_xfermask() from pacpi_discover_modes()
Finding out matching transfer mode from ACPI GTM values is useful for other purposes too. Separate out the function and timing tables from pata_acpi::pacpi_discover_modes(). Other than checking shared-configuration bit after doing ata_acpi_gtm() in pacpi_discover_modes() which should be safe, this patch doesn't introduce any behavior change. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/libata.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index bdb7c6e1399..8022e5b2224 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -961,6 +961,10 @@ enum {
/* libata-acpi.c */
#ifdef CONFIG_ATA_ACPI
+extern const unsigned int ata_acpi_pio_cycle[7];
+extern const unsigned int ata_acpi_mwdma_cycle[5];
+extern const unsigned int ata_acpi_udma_cycle[7];
+
static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
{
if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
@@ -970,12 +974,33 @@ static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
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);
+
#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)
+{
+ return -ENOSYS;
+}
+
+static inline int ata_acpi_gtm(const struct ata_port *ap,
+ struct ata_acpi_gtm *stm)
+{
+ return -ENOSYS;
+}
+
+static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
+ const struct ata_acpi_gtm *gtm)
+{
+ return 0;
+}
#endif
#ifdef CONFIG_PCI