X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=lib%2Fdma-debug.c;h=8971370bfb1619eb9d3acd332045129542092ee0;hb=8dfb790b15e779232d5d4e3f0102af2bea21ca55;hp=06f02f6aecd2b7ee974497941d0c6b7302f83f1c;hpb=541efb7632642cab55361178d73d544f025b593c;p=cascardo%2Flinux.git

diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index 06f02f6aecd2..8971370bfb16 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -44,6 +44,7 @@ enum {
 	dma_debug_page,
 	dma_debug_sg,
 	dma_debug_coherent,
+	dma_debug_resource,
 };
 
 enum map_err_types {
@@ -151,8 +152,9 @@ static const char *const maperr2str[] = {
 	[MAP_ERR_CHECKED] = "dma map error checked",
 };
 
-static const char *type2name[4] = { "single", "page",
-				    "scather-gather", "coherent" };
+static const char *type2name[5] = { "single", "page",
+				    "scather-gather", "coherent",
+				    "resource" };
 
 static const char *dir2name[4] = { "DMA_BIDIRECTIONAL", "DMA_TO_DEVICE",
 				   "DMA_FROM_DEVICE", "DMA_NONE" };
@@ -400,6 +402,9 @@ static void hash_bucket_del(struct dma_debug_entry *entry)
 
 static unsigned long long phys_addr(struct dma_debug_entry *entry)
 {
+	if (entry->type == dma_debug_resource)
+		return __pfn_to_phys(entry->pfn) + entry->offset;
+
 	return page_to_phys(pfn_to_page(entry->pfn)) + entry->offset;
 }
 
@@ -1519,6 +1524,49 @@ void debug_dma_free_coherent(struct device *dev, size_t size,
 }
 EXPORT_SYMBOL(debug_dma_free_coherent);
 
+void debug_dma_map_resource(struct device *dev, phys_addr_t addr, size_t size,
+			    int direction, dma_addr_t dma_addr)
+{
+	struct dma_debug_entry *entry;
+
+	if (unlikely(dma_debug_disabled()))
+		return;
+
+	entry = dma_entry_alloc();
+	if (!entry)
+		return;
+
+	entry->type		= dma_debug_resource;
+	entry->dev		= dev;
+	entry->pfn		= PHYS_PFN(addr);
+	entry->offset		= offset_in_page(addr);
+	entry->size		= size;
+	entry->dev_addr		= dma_addr;
+	entry->direction	= direction;
+	entry->map_err_type	= MAP_ERR_NOT_CHECKED;
+
+	add_dma_entry(entry);
+}
+EXPORT_SYMBOL(debug_dma_map_resource);
+
+void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
+			      size_t size, int direction)
+{
+	struct dma_debug_entry ref = {
+		.type           = dma_debug_resource,
+		.dev            = dev,
+		.dev_addr       = dma_addr,
+		.size           = size,
+		.direction      = direction,
+	};
+
+	if (unlikely(dma_debug_disabled()))
+		return;
+
+	check_unmap(&ref);
+}
+EXPORT_SYMBOL(debug_dma_unmap_resource);
+
 void debug_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
 				   size_t size, int direction)
 {