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authorChristoph Hellwig <hch@lst.de>2017-05-22 11:38:27 +0200
committerChristoph Hellwig <hch@lst.de>2017-06-28 06:54:46 -0700
commit5860acc1a905b05c14e9ed9e22c20aad1a72554a (patch)
treec7de41ef603b7f179b06241ca055966e65dcc995 /arch/x86/kernel
parent418a7a7e4f05f36d6e4ab5b8548ea71f0b602140 (diff)
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x86: remove arch specific dma_supported implementation
And instead wire it up as method for all the dma_map_ops instances. Note that this also means the arch specific check will be fully instead of partially applied in the AMD iommu driver. Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'arch/x86/kernel')
-rw-r--r--arch/x86/kernel/amd_gart_64.c1
-rw-r--r--arch/x86/kernel/pci-calgary_64.c1
-rw-r--r--arch/x86/kernel/pci-dma.c8
-rw-r--r--arch/x86/kernel/pci-nommu.c1
4 files changed, 4 insertions, 7 deletions
diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c
index 815dd63f49d0..cc0e8bc0ea3f 100644
--- a/arch/x86/kernel/amd_gart_64.c
+++ b/arch/x86/kernel/amd_gart_64.c
@@ -704,6 +704,7 @@ static const struct dma_map_ops gart_dma_ops = {
.alloc = gart_alloc_coherent,
.free = gart_free_coherent,
.mapping_error = gart_mapping_error,
+ .dma_supported = x86_dma_supported,
};
static void gart_iommu_shutdown(void)
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index e75b490f2b0b..5286a4a92cf7 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -493,6 +493,7 @@ static const struct dma_map_ops calgary_dma_ops = {
.map_page = calgary_map_page,
.unmap_page = calgary_unmap_page,
.mapping_error = calgary_mapping_error,
+ .dma_supported = x86_dma_supported,
};
static inline void __iomem * busno_to_bbar(unsigned char num)
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 3a216ec869cd..5e16d3f29594 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -213,10 +213,8 @@ static __init int iommu_setup(char *p)
}
early_param("iommu", iommu_setup);
-int dma_supported(struct device *dev, u64 mask)
+int x86_dma_supported(struct device *dev, u64 mask)
{
- const struct dma_map_ops *ops = get_dma_ops(dev);
-
#ifdef CONFIG_PCI
if (mask > 0xffffffff && forbid_dac > 0) {
dev_info(dev, "PCI: Disallowing DAC for device\n");
@@ -224,9 +222,6 @@ int dma_supported(struct device *dev, u64 mask)
}
#endif
- if (ops->dma_supported)
- return ops->dma_supported(dev, mask);
-
/* Copied from i386. Doesn't make much sense, because it will
only work for pci_alloc_coherent.
The caller just has to use GFP_DMA in this case. */
@@ -252,7 +247,6 @@ int dma_supported(struct device *dev, u64 mask)
return 1;
}
-EXPORT_SYMBOL(dma_supported);
static int __init pci_iommu_init(void)
{
diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c
index 085fe6ce4049..a6d404087fe3 100644
--- a/arch/x86/kernel/pci-nommu.c
+++ b/arch/x86/kernel/pci-nommu.c
@@ -104,4 +104,5 @@ const struct dma_map_ops nommu_dma_ops = {
.sync_sg_for_device = nommu_sync_sg_for_device,
.is_phys = 1,
.mapping_error = nommu_mapping_error,
+ .dma_supported = x86_dma_supported,
};