@@ -28,12 +28,31 @@ struct device;
extern void dma_debug_init(u32 num_entries);
+extern void debug_map_single(struct device *dev, void *ptr, size_t size,
+ int direction, dma_addr_t dma_addr);
+
+extern void debug_unmap_single(struct device *dev, dma_addr_t addr,
+ size_t size, int direction);
+
+
#else /* CONFIG_DMA_API_DEBUG */
static inline void dma_debug_init(u32 num_entries)
{
}
+static inline void debug_map_single(struct device *dev, void *ptr,
+ size_t size, int direction,
+ dma_addr_t dma_addr)
+{
+}
+
+static inline void debug_unmap_single(struct device *dev, dma_addr_t addr,
+ size_t size, int direction)
+{
+}
+
+
#endif /* CONFIG_DMA_API_DEBUG */
#endif /* __DMA_DEBUG_H */
@@ -510,3 +510,44 @@ out:
}
+void debug_map_single(struct device *dev, void *ptr, size_t size,
+ int direction, dma_addr_t dma_addr)
+{
+ struct dma_debug_entry *entry;
+
+ if (global_disable)
+ return;
+
+ entry = dma_entry_alloc();
+ if (!entry)
+ return;
+
+ entry->dev = dev;
+ entry->type = dma_debug_single;
+ entry->cpu_addr = ptr;
+ entry->dev_addr = dma_addr;
+ entry->size = size;
+ entry->direction = direction;
+
+ add_dma_entry(entry);
+}
+EXPORT_SYMBOL(debug_map_single);
+
+void debug_unmap_single(struct device *dev, dma_addr_t addr,
+ size_t size, int direction)
+{
+ struct dma_debug_entry ref = {
+ .type = dma_debug_single,
+ .dev = dev,
+ .dev_addr = addr,
+ .size = size,
+ .direction = direction,
+ };
+
+ if (global_disable)
+ return;
+
+ check_unmap(&ref);
+}
+EXPORT_SYMBOL(debug_unmap_single);
+
Impact: add debug callbacks for dma_{un}map_single Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> --- include/linux/dma-debug.h | 19 +++++++++++++++++++ lib/dma-debug.c | 41 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 60 insertions(+), 0 deletions(-)