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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-arm/scatterlist.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-arm/scatterlist.h')
-rw-r--r--include/asm-arm/scatterlist.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/include/asm-arm/scatterlist.h b/include/asm-arm/scatterlist.h
new file mode 100644
index 000000000000..83b876fb04cc
--- /dev/null
+++ b/include/asm-arm/scatterlist.h
@@ -0,0 +1,25 @@
+#ifndef _ASMARM_SCATTERLIST_H
+#define _ASMARM_SCATTERLIST_H
+
+#include <asm/memory.h>
+#include <asm/types.h>
+
+struct scatterlist {
+ struct page *page; /* buffer page */
+ unsigned int offset; /* buffer offset */
+ dma_addr_t dma_address; /* dma address */
+ unsigned int length; /* length */
+ char *__address; /* for set_dma_addr */
+};
+
+/*
+ * 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 /* _ASMARM_SCATTERLIST_H */