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authorIngo Molnar <mingo@elte.hu>2008-08-13 13:08:47 +0200
committerIngo Molnar <mingo@elte.hu>2008-08-13 13:08:47 +0200
commita12e61df4fa1cfae7a6b76976fa65a6fcb048e3f (patch)
tree957c915298b299902aa80afa7c78e94c71b3dc25 /arch/sh/include/asm/scatterlist.h
parent7b27718bdb1b70166383dec91391df5534d449ee (diff)
parent30a2f3c60a84092c8084dfe788b710f8d0768cd4 (diff)
Merge commit 'v2.6.27-rc3' into x86/urgent
Diffstat (limited to 'arch/sh/include/asm/scatterlist.h')
-rw-r--r--arch/sh/include/asm/scatterlist.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/sh/include/asm/scatterlist.h b/arch/sh/include/asm/scatterlist.h
new file mode 100644
index 00000000000..2084d037369
--- /dev/null
+++ b/arch/sh/include/asm/scatterlist.h
@@ -0,0 +1,27 @@
+#ifndef __ASM_SH_SCATTERLIST_H
+#define __ASM_SH_SCATTERLIST_H
+
+#include <asm/types.h>
+
+struct scatterlist {
+#ifdef CONFIG_DEBUG_SG
+ unsigned long sg_magic;
+#endif
+ unsigned long page_link;
+ unsigned int offset;/* for highmem, page offset */
+ dma_addr_t dma_address;
+ unsigned int length;
+};
+
+#define ISA_DMA_THRESHOLD PHYS_ADDR_MASK
+
+/* 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, or alternatively stop on the first sg_dma_len(sg) which
+ * is 0.
+ */
+#define sg_dma_address(sg) ((sg)->dma_address)
+#define sg_dma_len(sg) ((sg)->length)
+
+#endif /* !(__ASM_SH_SCATTERLIST_H) */