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authorPaul Mundt <lethal@linux-sh.org>2009-04-09 10:36:54 -0700
committerPaul Mundt <lethal@linux-sh.org>2009-04-09 10:36:54 -0700
commitf802d969b6a89d3f9b67ef879179824d53420ebe (patch)
tree73748811278c85817b59240d63e610c8a9565132 /arch/sh/include
parentb35346fd25f3c8c0b6afeb778f8c4f41c5703c84 (diff)
sh: Add support for DMA API debugging.
This wires up support for the generic DMA API debugging. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include')
-rw-r--r--arch/sh/include/asm/dma-mapping.h36
-rw-r--r--arch/sh/include/asm/scatterlist.h11
2 files changed, 37 insertions, 10 deletions
diff --git a/arch/sh/include/asm/dma-mapping.h b/arch/sh/include/asm/dma-mapping.h
index 627315ecdb5..ea9d4f41c9d 100644
--- a/arch/sh/include/asm/dma-mapping.h
+++ b/arch/sh/include/asm/dma-mapping.h
@@ -3,6 +3,7 @@
#include <linux/mm.h>
#include <linux/scatterlist.h>
+#include <linux/dma-debug.h>
#include <asm/cacheflush.h>
#include <asm/io.h>
#include <asm-generic/dma-coherent.h>
@@ -38,16 +39,26 @@ static inline dma_addr_t dma_map_single(struct device *dev,
void *ptr, size_t size,
enum dma_data_direction dir)
{
+ dma_addr_t addr = virt_to_phys(ptr);
+
#if defined(CONFIG_PCI) && !defined(CONFIG_SH_PCIDMA_NONCOHERENT)
if (dev->bus == &pci_bus_type)
- return virt_to_phys(ptr);
+ return addr;
#endif
dma_cache_sync(dev, ptr, size, dir);
- return virt_to_phys(ptr);
+ debug_dma_map_page(dev, virt_to_page(ptr),
+ (unsigned long)ptr & ~PAGE_MASK, size,
+ dir, addr, true);
+
+ return addr;
}
-#define dma_unmap_single(dev, addr, size, dir) do { } while (0)
+static inline void dma_unmap_single(struct device *dev, dma_addr_t addr,
+ size_t size, enum dma_data_direction dir)
+{
+ debug_dma_unmap_page(dev, addr, size, dir, true);
+}
static inline int dma_map_sg(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction dir)
@@ -59,12 +70,19 @@ static inline int dma_map_sg(struct device *dev, struct scatterlist *sg,
dma_cache_sync(dev, sg_virt(&sg[i]), sg[i].length, dir);
#endif
sg[i].dma_address = sg_phys(&sg[i]);
+ sg[i].dma_length = sg[i].length;
}
+ debug_dma_map_sg(dev, sg, nents, i, dir);
+
return nents;
}
-#define dma_unmap_sg(dev, sg, nents, dir) do { } while (0)
+static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
+ int nents, enum dma_data_direction dir)
+{
+ debug_dma_unmap_sg(dev, sg, nents, dir);
+}
static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
@@ -111,6 +129,7 @@ static inline void dma_sync_sg(struct device *dev, struct scatterlist *sg,
dma_cache_sync(dev, sg_virt(&sg[i]), sg[i].length, dir);
#endif
sg[i].dma_address = sg_phys(&sg[i]);
+ sg[i].dma_length = sg[i].length;
}
}
@@ -119,6 +138,7 @@ static inline void dma_sync_single_for_cpu(struct device *dev,
enum dma_data_direction dir)
{
dma_sync_single(dev, dma_handle, size, dir);
+ debug_dma_sync_single_for_cpu(dev, dma_handle, size, dir);
}
static inline void dma_sync_single_for_device(struct device *dev,
@@ -127,6 +147,7 @@ static inline void dma_sync_single_for_device(struct device *dev,
enum dma_data_direction dir)
{
dma_sync_single(dev, dma_handle, size, dir);
+ debug_dma_sync_single_for_device(dev, dma_handle, size, dir);
}
static inline void dma_sync_single_range_for_cpu(struct device *dev,
@@ -136,6 +157,8 @@ static inline void dma_sync_single_range_for_cpu(struct device *dev,
enum dma_data_direction direction)
{
dma_sync_single_for_cpu(dev, dma_handle+offset, size, direction);
+ debug_dma_sync_single_range_for_cpu(dev, dma_handle,
+ offset, size, direction);
}
static inline void dma_sync_single_range_for_device(struct device *dev,
@@ -145,6 +168,8 @@ static inline void dma_sync_single_range_for_device(struct device *dev,
enum dma_data_direction direction)
{
dma_sync_single_for_device(dev, dma_handle+offset, size, direction);
+ debug_dma_sync_single_range_for_device(dev, dma_handle,
+ offset, size, direction);
}
@@ -153,6 +178,7 @@ static inline void dma_sync_sg_for_cpu(struct device *dev,
enum dma_data_direction dir)
{
dma_sync_sg(dev, sg, nelems, dir);
+ debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir);
}
static inline void dma_sync_sg_for_device(struct device *dev,
@@ -160,9 +186,9 @@ static inline void dma_sync_sg_for_device(struct device *dev,
enum dma_data_direction dir)
{
dma_sync_sg(dev, sg, nelems, dir);
+ debug_dma_sync_sg_for_device(dev, sg, nelems, dir);
}
-
static inline int dma_get_cache_alignment(void)
{
/*
diff --git a/arch/sh/include/asm/scatterlist.h b/arch/sh/include/asm/scatterlist.h
index 2084d037369..c693d268a41 100644
--- a/arch/sh/include/asm/scatterlist.h
+++ b/arch/sh/include/asm/scatterlist.h
@@ -5,12 +5,13 @@
struct scatterlist {
#ifdef CONFIG_DEBUG_SG
- unsigned long sg_magic;
+ unsigned long sg_magic;
#endif
- unsigned long page_link;
- unsigned int offset;/* for highmem, page offset */
- dma_addr_t dma_address;
- unsigned int length;
+ unsigned long page_link;
+ unsigned int offset; /* for highmem, page offset */
+ unsigned int length;
+ dma_addr_t dma_address;
+ unsigned int dma_length;
};
#define ISA_DMA_THRESHOLD PHYS_ADDR_MASK