fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / asm-i386 / mach-xen / asm / swiotlb.h

diff --git a/include/asm-i386/mach-xen/asm/swiotlb.h b/include/asm-i386/mach-xen/asm/swiotlb.h
index c9afcbb..cf4ba38 100644 (file)
--- a/include/asm-i386/mach-xen/asm/swiotlb.h
+++ b/include/asm-i386/mach-xen/asm/swiotlb.h
@@ -32,6 +32,9 @@ extern void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dma_address,
 extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
 extern void swiotlb_init(void);
 
+/* Width of DMA addresses in the IO TLB. 30 bits is a b44 limitation. */
+#define IO_TLB_DMA_BITS 30
+
 #ifdef CONFIG_SWIOTLB
 extern int swiotlb;
 #else