extern int dma_debug_resize_entries(u32 num_entries);
+extern void debug_dma_map_single(struct device *dev, const void *addr,
+ unsigned long len);
+
extern void debug_dma_map_page(struct device *dev, struct page *page,
size_t offset, size_t size,
int direction, dma_addr_t dma_addr,
return 0;
}
+static inline void debug_dma_map_single(struct device *dev, const void *addr,
+ unsigned long len)
+{
+}
+
static inline void debug_dma_map_page(struct device *dev, struct page *page,
size_t offset, size_t size,
int direction, dma_addr_t dma_addr,
dma_addr_t addr;
BUG_ON(!valid_dma_direction(dir));
+ debug_dma_map_single(dev, ptr, size);
addr = ops->map_page(dev, virt_to_page(ptr),
offset_in_page(ptr), size,
dir, attrs);
#endif
}
+void debug_dma_map_single(struct device *dev, const void *addr,
+ unsigned long len)
+{
+ if (unlikely(dma_debug_disabled()))
+ return;
+
+ if (!virt_addr_valid(addr))
+ err_printk(dev, NULL, "DMA-API: device driver maps memory from invalid area [addr=%p] [len=%lu]\n",
+ addr, len);
+
+ if (is_vmalloc_addr(addr))
+ err_printk(dev, NULL, "DMA-API: device driver maps memory from vmalloc area [addr=%p] [len=%lu]\n",
+ addr, len);
+}
+EXPORT_SYMBOL(debug_dma_map_single);
+
void debug_dma_map_page(struct device *dev, struct page *page, size_t offset,
size_t size, int direction, dma_addr_t dma_addr,
bool map_single)