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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2010-05-26 17:44:42 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-27 12:12:55 -0400
commit7676679f659ac0112cad02789eb5560da2814e56 (patch)
treee4a5e618b6a2c105e38f89dc445c5ac7b332ccc2
parent3e6e3da8d5eafb5f849a14272ed725f85bed5dc8 (diff)
mn10300: use asm-generic/scatterlist.h
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: David Howells <dhowells@redhat.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/mn10300/include/asm/scatterlist.h39
1 files changed, 1 insertions, 38 deletions
diff --git a/arch/mn10300/include/asm/scatterlist.h b/arch/mn10300/include/asm/scatterlist.h
index 67535901b9ff..7bd00b9e030d 100644
--- a/arch/mn10300/include/asm/scatterlist.h
+++ b/arch/mn10300/include/asm/scatterlist.h
@@ -11,45 +11,8 @@
11#ifndef _ASM_SCATTERLIST_H 11#ifndef _ASM_SCATTERLIST_H
12#define _ASM_SCATTERLIST_H 12#define _ASM_SCATTERLIST_H
13 13
14#include <asm/types.h> 14#include <asm-generic/scatterlist.h>
15
16/*
17 * Drivers must set either ->address or (preferred) page and ->offset
18 * to indicate where data must be transferred to/from.
19 *
20 * Using page is recommended since it handles highmem data as well as
21 * low mem. ->address is restricted to data which has a virtual mapping, and
22 * it will go away in the future. Updating to page can be automated very
23 * easily -- something like
24 *
25 * sg->address = some_ptr;
26 *
27 * can be rewritten as
28 *
29 * sg_set_page(virt_to_page(some_ptr));
30 * sg->offset = (unsigned long) some_ptr & ~PAGE_MASK;
31 *
32 * and that's it. There's no excuse for not highmem enabling YOUR driver. /jens
33 */
34struct scatterlist {
35#ifdef CONFIG_DEBUG_SG
36 unsigned long sg_magic;
37#endif
38 unsigned long page_link;
39 unsigned int offset; /* for highmem, page offset */
40 dma_addr_t dma_address;
41 unsigned int length;
42};
43 15
44#define ISA_DMA_THRESHOLD (0x00ffffff) 16#define ISA_DMA_THRESHOLD (0x00ffffff)
45 17
46/*
47 * These macros should be used after a pci_map_sg call has been done
48 * to get bus addresses of each of the SG entries and their lengths.
49 * You should only work with the number of sg entries pci_map_sg
50 * returns.
51 */
52#define sg_dma_address(sg) ((sg)->dma_address)
53#define sg_dma_len(sg) ((sg)->length)
54
55#endif /* _ASM_SCATTERLIST_H */ 18#endif /* _ASM_SCATTERLIST_H */