Merge branch 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (60 commits)
  dma-debug: make memory range checks more consistent
  dma-debug: warn of unmapping an invalid dma address
  dma-debug: fix dma_debug_add_bus() definition for !CONFIG_DMA_API_DEBUG
  dma-debug/x86: register pci bus for dma-debug leak detection
  dma-debug: add a check dma memory leaks
  dma-debug: add checks for kernel text and rodata
  dma-debug: print stacktrace of mapping path on unmap error
  dma-debug: Documentation update
  dma-debug: x86 architecture bindings
  dma-debug: add function to dump dma mappings
  dma-debug: add checks for sync_single_sg_*
  dma-debug: add checks for sync_single_range_*
  dma-debug: add checks for sync_single_*
  dma-debug: add checking for [alloc|free]_coherent
  dma-debug: add add checking for map/unmap_sg
  dma-debug: add checking for map/unmap_page/single
  dma-debug: add core checking functions
  dma-debug: add debugfs interface
  dma-debug: add kernel command line parameters
  dma-debug: add initialization code
  ...

Fix trivial conflicts due to whitespace changes in arch/x86/kernel/pci-nommu.c

3 files changed, 95 insertions, 97 deletions

diff --git a/arch/x86/include/asm/device.h b/arch/x86/include/asm/device.h
index 3c034f48fdb0..4994a20acbcb 100644
--- a/arch/x86/include/asm/device.h
+++ b/arch/x86/include/asm/device.h
@@ -6,7 +6,7 @@ struct dev_archdata {
 	void	*acpi_handle;
 #endif
 #ifdef CONFIG_X86_64
-struct dma_mapping_ops *dma_ops;
+struct dma_map_ops *dma_ops;
 #endif
 #ifdef CONFIG_DMAR
 	void *iommu; /* hook for IOMMU specific extension */
diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h
index 132a134d12f2..cea7b74963e9 100644
--- a/arch/x86/include/asm/dma-mapping.h
+++ b/arch/x86/include/asm/dma-mapping.h
@@ -7,6 +7,8 @@
  */
 
 #include <linux/scatterlist.h>
+#include <linux/dma-debug.h>
+#include <linux/dma-attrs.h>
 #include <asm/io.h>
 #include <asm/swiotlb.h>
 #include <asm-generic/dma-coherent.h>
@@ -16,47 +18,9 @@ extern int iommu_merge;
 extern struct device x86_dma_fallback_dev;
 extern int panic_on_overflow;
 
-struct dma_mapping_ops {
-	int             (*mapping_error)(struct device *dev,
-					 dma_addr_t dma_addr);
-	void*           (*alloc_coherent)(struct device *dev, size_t size,
-				dma_addr_t *dma_handle, gfp_t gfp);
-	void            (*free_coherent)(struct device *dev, size_t size,
-				void *vaddr, dma_addr_t dma_handle);
-	dma_addr_t      (*map_single)(struct device *hwdev, phys_addr_t ptr,
-				size_t size, int direction);
-	void            (*unmap_single)(struct device *dev, dma_addr_t addr,
-				size_t size, int direction);
-	void            (*sync_single_for_cpu)(struct device *hwdev,
-				dma_addr_t dma_handle, size_t size,
-				int direction);
-	void            (*sync_single_for_device)(struct device *hwdev,
-				dma_addr_t dma_handle, size_t size,
-				int direction);
-	void            (*sync_single_range_for_cpu)(struct device *hwdev,
-				dma_addr_t dma_handle, unsigned long offset,
-				size_t size, int direction);
-	void            (*sync_single_range_for_device)(struct device *hwdev,
-				dma_addr_t dma_handle, unsigned long offset,
-				size_t size, int direction);
-	void            (*sync_sg_for_cpu)(struct device *hwdev,
-				struct scatterlist *sg, int nelems,
-				int direction);
-	void            (*sync_sg_for_device)(struct device *hwdev,
-				struct scatterlist *sg, int nelems,
-				int direction);
-	int             (*map_sg)(struct device *hwdev, struct scatterlist *sg,
-				int nents, int direction);
-	void            (*unmap_sg)(struct device *hwdev,
-				struct scatterlist *sg, int nents,
-				int direction);
-	int             (*dma_supported)(struct device *hwdev, u64 mask);
-	int		is_phys;
-};
-
-extern struct dma_mapping_ops *dma_ops;
-
-static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
+extern struct dma_map_ops *dma_ops;
+
+static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 {
 #ifdef CONFIG_X86_32
 	return dma_ops;
@@ -71,7 +35,7 @@ static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
 /* Make sure we keep the same behaviour */
 static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(dev);
+	struct dma_map_ops *ops = get_dma_ops(dev);
 	if (ops->mapping_error)
 		return ops->mapping_error(dev, dma_addr);
 
@@ -90,137 +54,167 @@ extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
 
 static inline dma_addr_t
 dma_map_single(struct device *hwdev, void *ptr, size_t size,
-	       int direction)
+	       enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
-
-	BUG_ON(!valid_dma_direction(direction));
-	return ops->map_single(hwdev, virt_to_phys(ptr), size, direction);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
+	dma_addr_t addr;
+
+	BUG_ON(!valid_dma_direction(dir));
+	addr = ops->map_page(hwdev, virt_to_page(ptr),
+			     (unsigned long)ptr & ~PAGE_MASK, size,
+			     dir, NULL);
+	debug_dma_map_page(hwdev, virt_to_page(ptr),
+			   (unsigned long)ptr & ~PAGE_MASK, size,
+			   dir, addr, true);
+	return addr;
 }
 
 static inline void
 dma_unmap_single(struct device *dev, dma_addr_t addr, size_t size,
-		 int direction)
+		 enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(dev);
+	struct dma_map_ops *ops = get_dma_ops(dev);
 
-	BUG_ON(!valid_dma_direction(direction));
-	if (ops->unmap_single)
-		ops->unmap_single(dev, addr, size, direction);
+	BUG_ON(!valid_dma_direction(dir));
+	if (ops->unmap_page)
+		ops->unmap_page(dev, addr, size, dir, NULL);
+	debug_dma_unmap_page(dev, addr, size, dir, true);
 }
 
 static inline int
 dma_map_sg(struct device *hwdev, struct scatterlist *sg,
-	   int nents, int direction)
+	   int nents, enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
+	int ents;
+
+	BUG_ON(!valid_dma_direction(dir));
+	ents = ops->map_sg(hwdev, sg, nents, dir, NULL);
+	debug_dma_map_sg(hwdev, sg, nents, ents, dir);
 
-	BUG_ON(!valid_dma_direction(direction));
-	return ops->map_sg(hwdev, sg, nents, direction);
+	return ents;
 }
 
 static inline void
 dma_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
-	     int direction)
+	     enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
+	debug_dma_unmap_sg(hwdev, sg, nents, dir);
 	if (ops->unmap_sg)
-		ops->unmap_sg(hwdev, sg, nents, direction);
+		ops->unmap_sg(hwdev, sg, nents, dir, NULL);
 }
 
 static inline void
 dma_sync_single_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
-			size_t size, int direction)
+			size_t size, enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
 	if (ops->sync_single_for_cpu)
-		ops->sync_single_for_cpu(hwdev, dma_handle, size, direction);
+		ops->sync_single_for_cpu(hwdev, dma_handle, size, dir);
+	debug_dma_sync_single_for_cpu(hwdev, dma_handle, size, dir);
 	flush_write_buffers();
 }
 
 static inline void
 dma_sync_single_for_device(struct device *hwdev, dma_addr_t dma_handle,
-			   size_t size, int direction)
+			   size_t size, enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
 	if (ops->sync_single_for_device)
-		ops->sync_single_for_device(hwdev, dma_handle, size, direction);
+		ops->sync_single_for_device(hwdev, dma_handle, size, dir);
+	debug_dma_sync_single_for_device(hwdev, dma_handle, size, dir);
 	flush_write_buffers();
 }
 
 static inline void
 dma_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
-			      unsigned long offset, size_t size, int direction)
+			      unsigned long offset, size_t size,
+			      enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
 	if (ops->sync_single_range_for_cpu)
 		ops->sync_single_range_for_cpu(hwdev, dma_handle, offset,
-					       size, direction);
+					       size, dir);
+	debug_dma_sync_single_range_for_cpu(hwdev, dma_handle,
+					    offset, size, dir);
 	flush_write_buffers();
 }
 
 static inline void
 dma_sync_single_range_for_device(struct device *hwdev, dma_addr_t dma_handle,
 				 unsigned long offset, size_t size,
-				 int direction)
+				 enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
 	if (ops->sync_single_range_for_device)
 		ops->sync_single_range_for_device(hwdev, dma_handle,
-						  offset, size, direction);
+						  offset, size, dir);
+	debug_dma_sync_single_range_for_device(hwdev, dma_handle,
+					       offset, size, dir);
 	flush_write_buffers();
 }
 
 static inline void
 dma_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
-		    int nelems, int direction)
+		    int nelems, enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
 	if (ops->sync_sg_for_cpu)
-		ops->sync_sg_for_cpu(hwdev, sg, nelems, direction);
+		ops->sync_sg_for_cpu(hwdev, sg, nelems, dir);
+	debug_dma_sync_sg_for_cpu(hwdev, sg, nelems, dir);
 	flush_write_buffers();
 }
 
 static inline void
 dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
-		       int nelems, int direction)
+		       int nelems, enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(hwdev);
+	struct dma_map_ops *ops = get_dma_ops(hwdev);
 
-	BUG_ON(!valid_dma_direction(direction));
+	BUG_ON(!valid_dma_direction(dir));
 	if (ops->sync_sg_for_device)
-		ops->sync_sg_for_device(hwdev, sg, nelems, direction);
+		ops->sync_sg_for_device(hwdev, sg, nelems, dir);
+	debug_dma_sync_sg_for_device(hwdev, sg, nelems, dir);
 
 	flush_write_buffers();
 }
 
 static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
 				      size_t offset, size_t size,
-				      int direction)
+				      enum dma_data_direction dir)
 {
-	struct dma_mapping_ops *ops = get_dma_ops(dev);
+	struct dma_map_ops *ops = get_dma_ops(dev);
+	dma_addr_t addr;
 
-	BUG_ON(!valid_dma_direction(direction));
-	return ops->map_single(dev, page_to_phys(page) + offset,
-			       size, direction);
+	BUG_ON(!valid_dma_direction(dir));
+	addr = ops->map_page(dev, page, offset, size, dir, NULL);
+	debug_dma_map_page(dev, page, offset, size, dir, addr, false);
+
+	return addr;
 }
 
 static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
-				  size_t size, int direction)
+				  size_t size, enum dma_data_direction dir)
 {
-	dma_unmap_single(dev, addr, size, direction);
+	struct dma_map_ops *ops = get_dma_ops(dev);
+
+	BUG_ON(!valid_dma_direction(dir));
+	if (ops->unmap_page)
+		ops->unmap_page(dev, addr, size, dir, NULL);
+	debug_dma_unmap_page(dev, addr, size, dir, false);
 }
 
 static inline void
@@ -266,7 +260,7 @@ static inline 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);
+	struct dma_map_ops *ops = get_dma_ops(dev);
 	void *memory;
 
 	gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
@@ -285,20 +279,24 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
 	if (!ops->alloc_coherent)
 		return NULL;
 
-	return ops->alloc_coherent(dev, size, dma_handle,
-				   dma_alloc_coherent_gfp_flags(dev, gfp));
+	memory = ops->alloc_coherent(dev, size, dma_handle,
+				     dma_alloc_coherent_gfp_flags(dev, gfp));
+	debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
+
+	return memory;
 }
 
 static inline 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);
+	struct dma_map_ops *ops = get_dma_ops(dev);
 
 	WARN_ON(irqs_disabled());       /* for portability */
 
 	if (dma_release_from_coherent(dev, get_order(size), vaddr))
 		return;
 
+	debug_dma_free_coherent(dev, size, vaddr, bus);
 	if (ops->free_coherent)
 		ops->free_coherent(dev, size, vaddr, bus);
 }
diff --git a/arch/x86/include/asm/iommu.h b/arch/x86/include/asm/iommu.h
index a6ee9e6f530f..af326a2975b5 100644
--- a/arch/x86/include/asm/iommu.h
+++ b/arch/x86/include/asm/iommu.h
@@ -3,7 +3,7 @@
 
 extern void pci_iommu_shutdown(void);
 extern void no_iommu_init(void);
-extern struct dma_mapping_ops nommu_dma_ops;
+extern struct dma_map_ops nommu_dma_ops;
 extern int force_iommu, no_iommu;
 extern int iommu_detected;