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Diffstat (limited to 'arch/x86/kernel/pci-dma.c')
-rw-r--r--arch/x86/kernel/pci-dma.c22
1 files changed, 14 insertions, 8 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index dc00a1331ace..8467ec2320f1 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -7,6 +7,7 @@
#include <asm/dma.h>
#include <asm/gart.h>
#include <asm/calgary.h>
+#include <asm/amd_iommu.h>
int forbid_dac __read_mostly;
EXPORT_SYMBOL(forbid_dac);
@@ -74,13 +75,17 @@ early_param("dma32_size", parse_dma32_size_opt);
void __init dma32_reserve_bootmem(void)
{
unsigned long size, align;
- if (end_pfn <= MAX_DMA32_PFN)
+ if (max_pfn <= MAX_DMA32_PFN)
return;
+ /*
+ * check aperture_64.c allocate_aperture() for reason about
+ * using 512M as goal
+ */
align = 64ULL<<20;
size = round_up(dma32_bootmem_size, align);
dma32_bootmem_ptr = __alloc_bootmem_nopanic(size, align,
- __pa(MAX_DMA_ADDRESS));
+ 512ULL<<20);
if (dma32_bootmem_ptr)
dma32_bootmem_size = size;
else
@@ -88,17 +93,14 @@ void __init dma32_reserve_bootmem(void)
}
static void __init dma32_free_bootmem(void)
{
- int node;
- if (end_pfn <= MAX_DMA32_PFN)
+ if (max_pfn <= MAX_DMA32_PFN)
return;
if (!dma32_bootmem_ptr)
return;
- for_each_online_node(node)
- free_bootmem_node(NODE_DATA(node), __pa(dma32_bootmem_ptr),
- dma32_bootmem_size);
+ free_bootmem(__pa(dma32_bootmem_ptr), dma32_bootmem_size);
dma32_bootmem_ptr = NULL;
dma32_bootmem_size = 0;
@@ -122,6 +124,8 @@ void __init pci_iommu_alloc(void)
detect_intel_iommu();
+ amd_iommu_detect();
+
#ifdef CONFIG_SWIOTLB
pci_swiotlb_init();
#endif
@@ -357,7 +361,7 @@ int dma_supported(struct device *dev, u64 mask)
EXPORT_SYMBOL(dma_supported);
/* Allocate DMA memory on node near device */
-noinline struct page *
+static noinline struct page *
dma_alloc_pages(struct device *dev, gfp_t gfp, unsigned order)
{
int node;
@@ -502,6 +506,8 @@ static int __init pci_iommu_init(void)
intel_iommu_init();
+ amd_iommu_init();
+
#ifdef CONFIG_GART_IOMMU
gart_iommu_init();
#endif