Merge branch 'linus' into core/generic-dma-coherent

[pandora-kernel.git] / arch / x86 / kernel / pci-dma.c

diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index b7dd70f..8dbffb8 100644 (file)
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -5,14 +5,13 @@
 
 #include <asm/proto.h>
 #include <asm/dma.h>
-#include <asm/gart.h>
+#include <asm/iommu.h>
 #include <asm/calgary.h>
 #include <asm/amd_iommu.h>
 
-int forbid_dac __read_mostly;
-EXPORT_SYMBOL(forbid_dac);
+static int forbid_dac __read_mostly;
 
-const struct dma_mapping_ops *dma_ops;
+struct dma_mapping_ops *dma_ops;
 EXPORT_SYMBOL(dma_ops);
 
 static int iommu_sac_force __read_mostly;
@@ -114,21 +113,15 @@ void __init pci_iommu_alloc(void)
         * The order of these functions is important for
         * fall-back/fail-over reasons
         */
-#ifdef CONFIG_GART_IOMMU
        gart_iommu_hole_init();
-#endif
 
-#ifdef CONFIG_CALGARY_IOMMU
        detect_calgary();
-#endif
 
        detect_intel_iommu();
 
        amd_iommu_detect();
 
-#ifdef CONFIG_SWIOTLB
        pci_swiotlb_init();
-#endif
 }
 #endif
 
@@ -184,9 +177,7 @@ static __init int iommu_setup(char *p)
                        swiotlb = 1;
 #endif
 
-#ifdef CONFIG_GART_IOMMU
                gart_parse_options(p);
-#endif
 
 #ifdef CONFIG_CALGARY_IOMMU
                if (!strncmp(p, "calgary", 7))
@@ -203,16 +194,17 @@ early_param("iommu", iommu_setup);
 
 int dma_supported(struct device *dev, u64 mask)
 {
+       struct dma_mapping_ops *ops = get_dma_ops(dev);
+
 #ifdef CONFIG_PCI
        if (mask > 0xffffffff && forbid_dac > 0) {
-               printk(KERN_INFO "PCI: Disallowing DAC for device %s\n",
-                                dev->bus_id);
+               dev_info(dev, "PCI: Disallowing DAC for device\n");
                return 0;
        }
 #endif
 
-       if (dma_ops->dma_supported)
-               return dma_ops->dma_supported(dev, mask);
+       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.
@@ -233,8 +225,7 @@ int dma_supported(struct device *dev, u64 mask)
           type. Normally this doesn't make any difference, but gives
           more gentle handling of IOMMU overflow. */
        if (iommu_sac_force && (mask >= DMA_40BIT_MASK)) {
-               printk(KERN_INFO "%s: Force SAC with mask %Lx\n",
-                                dev->bus_id, mask);
+               dev_info(dev, "Force SAC with mask %Lx\n", mask);
                return 0;
        }
 
@@ -260,6 +251,7 @@ void *
 dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
                   gfp_t gfp)
 {
+       struct dma_mapping_ops *ops = get_dma_ops(dev);
        void *memory = NULL;
        struct page *page;
        unsigned long dma_mask = 0;
@@ -328,8 +320,8 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
                        /* Let low level make its own zone decisions */
                        gfp &= ~(GFP_DMA32|GFP_DMA);
 
-                       if (dma_ops->alloc_coherent)
-                               return dma_ops->alloc_coherent(dev, size,
+                       if (ops->alloc_coherent)
+                               return ops->alloc_coherent(dev, size,
                                                           dma_handle, gfp);
                        return NULL;
                }
@@ -341,14 +333,14 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
                }
        }
 
-       if (dma_ops->alloc_coherent) {
+       if (ops->alloc_coherent) {
                free_pages((unsigned long)memory, get_order(size));
                gfp &= ~(GFP_DMA|GFP_DMA32);
-               return dma_ops->alloc_coherent(dev, size, dma_handle, gfp);
+               return ops->alloc_coherent(dev, size, dma_handle, gfp);
        }
 
-       if (dma_ops->map_simple) {
-               *dma_handle = dma_ops->map_simple(dev, virt_to_phys(memory),
+       if (ops->map_simple) {
+               *dma_handle = ops->map_simple(dev, virt_to_phys(memory),
                                              size,
                                              PCI_DMA_BIDIRECTIONAL);
                if (*dma_handle != bad_dma_address)
@@ -370,29 +362,27 @@ EXPORT_SYMBOL(dma_alloc_coherent);
 void dma_free_coherent(struct device *dev, size_t size,
                         void *vaddr, dma_addr_t bus)
 {
+       struct dma_mapping_ops *ops = get_dma_ops(dev);
+
        int order = get_order(size);
        WARN_ON(irqs_disabled());       /* for portability */
        if (dma_release_from_coherent(dev, order, vaddr))
                return;
-       if (dma_ops->unmap_single)
-               dma_ops->unmap_single(dev, bus, size, 0);
+       if (ops->unmap_single)
+               ops->unmap_single(dev, bus, size, 0);
        free_pages((unsigned long)vaddr, order);
 }
 EXPORT_SYMBOL(dma_free_coherent);
 
 static int __init pci_iommu_init(void)
 {
-#ifdef CONFIG_CALGARY_IOMMU
        calgary_iommu_init();
-#endif
 
        intel_iommu_init();
 
        amd_iommu_init();
 
-#ifdef CONFIG_GART_IOMMU
        gart_iommu_init();
-#endif
 
        no_iommu_init();
        return 0;