1 files changed, 18 insertions, 27 deletions

diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index dc00a1331ace..cbecb05551bb 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -5,11 +5,11 @@
 
 #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;
 EXPORT_SYMBOL(dma_ops);
@@ -74,13 +74,17 @@ 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 +92,14 @@ 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;
@@ -112,19 +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();
 
-#ifdef CONFIG_SWIOTLB
+        amd_iommu_detect();
+
         pci_swiotlb_init();
-#endif
 }
 #endif
 
@@ -180,9 +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))
@@ -319,8 +314,7 @@ int dma_supported(struct device *dev, u64 mask)
 {
 #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
@@ -347,8 +341,7 @@ 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;
         }
 
@@ -357,7 +350,7 @@ 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;
@@ -496,15 +489,13 @@ EXPORT_SYMBOL(dma_free_coherent);
 
 static int __init pci_iommu_init(void)
 {
-#ifdef CONFIG_CALGARY_IOMMU
         calgary_iommu_init();
-#endif
 
         intel_iommu_init();
 
-#ifdef CONFIG_GART_IOMMU
+        amd_iommu_init();
+
         gart_iommu_init();
-#endif
 
         no_iommu_init();
         return 0;