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x86: iommu: use symbolic constants, not hardcoded numbers

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Move symbolic constants into gart.h, and use them instead of hardcoded
constant.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Pavel Machek
2008-04-08 10:49:03 +02:00
committed by Ingo Molnar
parent 492c2e476e
commit aa134f1b09
3 changed files with 29 additions and 27 deletions
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21
include/asm-x86/gart.h
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@@ -5,6 +5,7 @@ extern void pci_iommu_shutdown(void);
extern void no_iommu_init(void);
extern int force_iommu, no_iommu;
extern int iommu_detected;
extern int agp_amd64_init(void);
#ifdef CONFIG_GART_IOMMU
extern void gart_iommu_init(void);
extern void gart_iommu_shutdown(void);
@@ -31,4 +32,24 @@ static inline void gart_iommu_shutdown(void)
#endif
/* PTE bits. */
#define GPTE_VALID 1
#define GPTE_COHERENT 2
/* Aperture control register bits. */
#define GARTEN (1<<0)
#define DISGARTCPU (1<<4)
#define DISGARTIO (1<<5)
/* GART cache control register bits. */
#define INVGART (1<<0)
#define GARTPTEERR (1<<1)
/* K8 On-cpu GART registers */
#define AMD64_GARTAPERTURECTL 0x90
#define AMD64_GARTAPERTUREBASE 0x94
#define AMD64_GARTTABLEBASE 0x98
#define AMD64_GARTCACHECTL 0x9c
#define AMD64_GARTEN (1<<0)
#endif