summaryrefslogtreecommitdiffstats
path: root/include/asm-x86/gart.h
diff options
context:
space:
mode:
authorPavel Machek <pavel@ucw.cz>2008-04-08 10:49:03 +0200
committerIngo Molnar <mingo@elte.hu>2008-05-12 21:28:10 +0200
commitaa134f1b09df6beaa4d031a50d5fda1f3cebce6c (patch)
tree3bd632e6fa8490cf5b472271d57c8c70abaa62b4 /include/asm-x86/gart.h
parent492c2e476eac010962850006c49df326919b284c (diff)
downloadlinux-aa134f1b09df6beaa4d031a50d5fda1f3cebce6c.tar.gz
linux-aa134f1b09df6beaa4d031a50d5fda1f3cebce6c.tar.bz2
linux-aa134f1b09df6beaa4d031a50d5fda1f3cebce6c.zip
x86: iommu: use symbolic constants, not hardcoded numbers
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>
Diffstat (limited to 'include/asm-x86/gart.h')
-rw-r--r--include/asm-x86/gart.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/asm-x86/gart.h b/include/asm-x86/gart.h
index 90958ed993fa..248e5778e928 100644
--- a/include/asm-x86/gart.h
+++ b/include/asm-x86/gart.h
@@ -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