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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-parisc/scatterlist.h
downloadlinux-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
linux-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip
Linux-2.6.12-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-parisc/scatterlist.h')
-rw-r--r--include/asm-parisc/scatterlist.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/include/asm-parisc/scatterlist.h b/include/asm-parisc/scatterlist.h
new file mode 100644
index 000000000000..236c1d0fba33
--- /dev/null
+++ b/include/asm-parisc/scatterlist.h
@@ -0,0 +1,23 @@
+#ifndef _ASM_PARISC_SCATTERLIST_H
+#define _ASM_PARISC_SCATTERLIST_H
+
+#include <asm/page.h>
+
+struct scatterlist {
+ struct page *page;
+ unsigned int offset;
+
+ unsigned int length;
+
+ /* an IOVA can be 64-bits on some PA-Risc platforms. */
+ dma_addr_t iova; /* I/O Virtual Address */
+ __u32 iova_length; /* bytes mapped */
+};
+
+#define sg_virt_addr(sg) ((unsigned long)(page_address(sg->page) + sg->offset))
+#define sg_dma_address(sg) ((sg)->iova)
+#define sg_dma_len(sg) ((sg)->iova_length)
+
+#define ISA_DMA_THRESHOLD (~0UL)
+
+#endif /* _ASM_PARISC_SCATTERLIST_H */