x86: consolidate header guards

[cascardo/linux.git] / include / asm-x86 / scatterlist.h

diff --git a/include/asm-x86/scatterlist.h b/include/asm-x86/scatterlist.h
index 3a1e762..ee48f88 100644 (file)
--- a/include/asm-x86/scatterlist.h
+++ b/include/asm-x86/scatterlist.h
@@ -1,5 +1,33 @@
+#ifndef ASM_X86__SCATTERLIST_H
+#define ASM_X86__SCATTERLIST_H
+
+#include <asm/types.h>
+
+struct scatterlist {
+#ifdef CONFIG_DEBUG_SG
+       unsigned long   sg_magic;
+#endif
+       unsigned long   page_link;
+       unsigned int    offset;
+       unsigned int    length;
+       dma_addr_t      dma_address;
+       unsigned int    dma_length;
+};
+
+#define ARCH_HAS_SG_CHAIN
+#define ISA_DMA_THRESHOLD (0x00ffffff)
+
+/*
+ * These macros should be used after a pci_map_sg call has been done
+ * to get bus addresses of each of the SG entries and their lengths.
+ * You should only work with the number of sg entries pci_map_sg
+ * returns.
+ */
+#define sg_dma_address(sg)     ((sg)->dma_address)
 #ifdef CONFIG_X86_32
-# include "scatterlist_32.h"
+# define sg_dma_len(sg)                ((sg)->length)
 #else
-# include "scatterlist_64.h"
+# define sg_dma_len(sg)                ((sg)->dma_length)
 #endif
+
+#endif /* ASM_X86__SCATTERLIST_H */