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authorNiklas Söderlund <niklas.soderlund+renesas@ragnatech.se>2016-08-10 14:22:15 +0300
committerVinod Koul <vinod.koul@intel.com>2016-09-26 19:46:41 +0300
commit0e74b34dfc3318bf4c7e51349d453d49fb8e9e16 (patch)
treeb70ed304ada0970420008f7131e043bc75c8ae6d /include/linux/dma-debug.h
parentba409b31b3d37b52dda4eefcde04f5837c7ee4aa (diff)
downloadlinux-0e74b34dfc3318bf4c7e51349d453d49fb8e9e16.tar.xz
dma-debug: add support for resource mappings
A MMIO mapped resource can not be represented by a struct page so a new debug type is needed to handle this. This patch add such type and functionality to add/remove entries and how to translate them to a physical address. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'include/linux/dma-debug.h')
-rw-r--r--include/linux/dma-debug.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h
index fe8cb610deac..c7d844f09c3a 100644
--- a/include/linux/dma-debug.h
+++ b/include/linux/dma-debug.h
@@ -56,6 +56,13 @@ extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
extern void debug_dma_free_coherent(struct device *dev, size_t size,
void *virt, dma_addr_t addr);
+extern void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
+ size_t size, int direction,
+ dma_addr_t dma_addr);
+
+extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
+ size_t size, int direction);
+
extern void debug_dma_sync_single_for_cpu(struct device *dev,
dma_addr_t dma_handle, size_t size,
int direction);
@@ -141,6 +148,18 @@ static inline void debug_dma_free_coherent(struct device *dev, size_t size,
{
}
+static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
+ size_t size, int direction,
+ dma_addr_t dma_addr)
+{
+}
+
+static inline void debug_dma_unmap_resource(struct device *dev,
+ dma_addr_t dma_addr, size_t size,
+ int direction)
+{
+}
+
static inline void debug_dma_sync_single_for_cpu(struct device *dev,
dma_addr_t dma_handle,
size_t size, int direction)