Merge branch 'x86/iommu' into x86/core
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 1cbec02..a2ae4c0 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -563,7 +563,7 @@
# need this always selected by IOMMU for the VIA workaround
config SWIOTLB
- bool
+ def_bool y if X86_64
help
Support for software bounce buffers used on x86-64 systems
which don't have a hardware IOMMU (e.g. the current generation
diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h
index 097794f..dc22c07 100644
--- a/arch/x86/include/asm/dma-mapping.h
+++ b/arch/x86/include/asm/dma-mapping.h
@@ -71,12 +71,10 @@
/* Make sure we keep the same behaviour */
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
-#ifdef CONFIG_X86_64
struct dma_mapping_ops *ops = get_dma_ops(dev);
if (ops->mapping_error)
return ops->mapping_error(dev, dma_addr);
-#endif
return (dma_addr == bad_dma_address);
}
diff --git a/arch/x86/include/asm/gart.h b/arch/x86/include/asm/gart.h
index 7425226..6cfdafa 100644
--- a/arch/x86/include/asm/gart.h
+++ b/arch/x86/include/asm/gart.h
@@ -29,6 +29,39 @@
#define AMD64_GARTCACHECTL 0x9c
#define AMD64_GARTEN (1<<0)
+#ifdef CONFIG_GART_IOMMU
+extern int gart_iommu_aperture;
+extern int gart_iommu_aperture_allowed;
+extern int gart_iommu_aperture_disabled;
+
+extern void early_gart_iommu_check(void);
+extern void gart_iommu_init(void);
+extern void gart_iommu_shutdown(void);
+extern void __init gart_parse_options(char *);
+extern void gart_iommu_hole_init(void);
+
+#else
+#define gart_iommu_aperture 0
+#define gart_iommu_aperture_allowed 0
+#define gart_iommu_aperture_disabled 1
+
+static inline void early_gart_iommu_check(void)
+{
+}
+static inline void gart_iommu_init(void)
+{
+}
+static inline void gart_iommu_shutdown(void)
+{
+}
+static inline void gart_parse_options(char *options)
+{
+}
+static inline void gart_iommu_hole_init(void)
+{
+}
+#endif
+
extern int agp_amd64_init(void);
static inline void enable_gart_translation(struct pci_dev *dev, u64 addr)
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index 33513b9..05cfed4 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -80,8 +80,6 @@
#define readq readq
#define writeq writeq
-extern int iommu_bio_merge;
-
#ifdef CONFIG_X86_32
# include "io_32.h"
#else
diff --git a/arch/x86/include/asm/io_64.h b/arch/x86/include/asm/io_64.h
index fea325a..563c162 100644
--- a/arch/x86/include/asm/io_64.h
+++ b/arch/x86/include/asm/io_64.h
@@ -232,8 +232,6 @@
#define flush_write_buffers()
-#define BIO_VMERGE_BOUNDARY iommu_bio_merge
-
/*
* Convert a virtual cached pointer to an uncached pointer
*/
diff --git a/arch/x86/include/asm/iommu.h b/arch/x86/include/asm/iommu.h
index 0b500c5..295b131 100644
--- a/arch/x86/include/asm/iommu.h
+++ b/arch/x86/include/asm/iommu.h
@@ -12,37 +12,4 @@
/* 10 seconds */
#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)
-#ifdef CONFIG_GART_IOMMU
-extern int gart_iommu_aperture;
-extern int gart_iommu_aperture_allowed;
-extern int gart_iommu_aperture_disabled;
-
-extern void early_gart_iommu_check(void);
-extern void gart_iommu_init(void);
-extern void gart_iommu_shutdown(void);
-extern void __init gart_parse_options(char *);
-extern void gart_iommu_hole_init(void);
-
-#else
-#define gart_iommu_aperture 0
-#define gart_iommu_aperture_allowed 0
-#define gart_iommu_aperture_disabled 1
-
-static inline void early_gart_iommu_check(void)
-{
-}
-static inline void gart_iommu_init(void)
-{
-}
-static inline void gart_iommu_shutdown(void)
-{
-}
-static inline void gart_parse_options(char *options)
-{
-}
-static inline void gart_iommu_hole_init(void)
-{
-}
-#endif
-
#endif /* _ASM_X86_IOMMU_H */
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 0a60d60..2e2da71 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -24,6 +24,7 @@
#include <linux/iommu-helper.h>
#include <asm/proto.h>
#include <asm/iommu.h>
+#include <asm/gart.h>
#include <asm/amd_iommu_types.h>
#include <asm/amd_iommu.h>
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index c6cc228..c625800 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -28,6 +28,7 @@
#include <asm/amd_iommu_types.h>
#include <asm/amd_iommu.h>
#include <asm/iommu.h>
+#include <asm/gart.h>
/*
* definitions for the ACPI scanning code
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 9a32b37..676debf 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -1,8 +1,9 @@
/*
* Firmware replacement code.
*
- * Work around broken BIOSes that don't set an aperture or only set the
- * aperture in the AGP bridge.
+ * Work around broken BIOSes that don't set an aperture, only set the
+ * aperture in the AGP bridge, or set too small aperture.
+ *
* If all fails map the aperture over some low memory. This is cheaper than
* doing bounce buffering. The memory is lost. This is done at early boot
* because only the bootmem allocator can allocate 32+MB.
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 1b894b7..744aa7f 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -17,6 +17,7 @@
#include <asm/io_apic.h>
#include <asm/apic.h>
#include <asm/iommu.h>
+#include <asm/gart.h>
static void __init fix_hypertransport_config(int num, int slot, int func)
{
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index dc57299..7a3dfce 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -6,6 +6,7 @@
#include <asm/proto.h>
#include <asm/dma.h>
#include <asm/iommu.h>
+#include <asm/gart.h>
#include <asm/calgary.h>
#include <asm/amd_iommu.h>
@@ -30,11 +31,6 @@
/* Set this to 1 if there is a HW IOMMU in the system */
int iommu_detected __read_mostly = 0;
-/* This tells the BIO block layer to assume merging. Default to off
- because we cannot guarantee merging later. */
-int iommu_bio_merge __read_mostly = 0;
-EXPORT_SYMBOL(iommu_bio_merge);
-
dma_addr_t bad_dma_address __read_mostly = 0;
EXPORT_SYMBOL(bad_dma_address);
@@ -188,7 +184,6 @@
}
if (!strncmp(p, "biomerge", 8)) {
- iommu_bio_merge = 4096;
iommu_merge = 1;
force_iommu = 1;
}
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index a3122382..08e02e8 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -93,6 +93,7 @@
#include <asm/desc.h>
#include <asm/dma.h>
#include <asm/iommu.h>
+#include <asm/gart.h>
#include <asm/mmu_context.h>
#include <asm/proto.h>
