From 7c77fa4d51b1480bcec2e898c94d6912fe063c16 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 18 Dec 2007 16:33:03 +0900 Subject: 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 Cc: Alan Cox Signed-off-by: Jeff Garzik --- include/linux/libata.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include') 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 -- cgit v1.2.3