dma-debug: add checks for sync_single_sg_*
Impact: add debug callbacks for dma_sync_sg_* functions
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h
index e9b9035..4985c6c 100644
--- a/include/linux/dma-debug.h
+++ b/include/linux/dma-debug.h
@@ -68,6 +68,14 @@
unsigned long offset,
size_t size, int direction);
+extern void debug_dma_sync_sg_for_cpu(struct device *dev,
+ struct scatterlist *sg,
+ int nelems, int direction);
+
+extern void debug_dma_sync_sg_for_device(struct device *dev,
+ struct scatterlist *sg,
+ int nelems, int direction);
+
#else /* CONFIG_DMA_API_DEBUG */
static inline void dma_debug_init(u32 num_entries)
@@ -136,6 +144,18 @@
{
}
+static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
+ struct scatterlist *sg,
+ int nelems, int direction)
+{
+}
+
+static inline void debug_dma_sync_sg_for_device(struct device *dev,
+ struct scatterlist *sg,
+ int nelems, int direction)
+{
+}
+
#endif /* CONFIG_DMA_API_DEBUG */
#endif /* __DMA_DEBUG_H */
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index d1c0ac1..9d11e89 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -782,3 +782,35 @@
}
EXPORT_SYMBOL(debug_dma_sync_single_range_for_device);
+void debug_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
+ int nelems, int direction)
+{
+ struct scatterlist *s;
+ int i;
+
+ if (unlikely(global_disable))
+ return;
+
+ for_each_sg(sg, s, nelems, i) {
+ check_sync(dev, s->dma_address, s->dma_length, 0,
+ direction, true);
+ }
+}
+EXPORT_SYMBOL(debug_dma_sync_sg_for_cpu);
+
+void debug_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
+ int nelems, int direction)
+{
+ struct scatterlist *s;
+ int i;
+
+ if (unlikely(global_disable))
+ return;
+
+ for_each_sg(sg, s, nelems, i) {
+ check_sync(dev, s->dma_address, s->dma_length, 0,
+ direction, false);
+ }
+}
+EXPORT_SYMBOL(debug_dma_sync_sg_for_device);
+