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-rw-r--r--arch/frv/include/asm/scatterlist.h40
1 files changed, 1 insertions, 39 deletions
diff --git a/arch/frv/include/asm/scatterlist.h b/arch/frv/include/asm/scatterlist.h
index 4bca8a28546c..1614bfd7e3a4 100644
--- a/arch/frv/include/asm/scatterlist.h
+++ b/arch/frv/include/asm/scatterlist.h
@@ -1,45 +1,7 @@
1#ifndef _ASM_SCATTERLIST_H 1#ifndef _ASM_SCATTERLIST_H
2#define _ASM_SCATTERLIST_H 2#define _ASM_SCATTERLIST_H
3 3
4#include <asm/types.h> 4#include <asm-generic/scatterlist.h>
5
6/*
7 * Drivers must set either ->address or (preferred) page and ->offset
8 * to indicate where data must be transferred to/from.
9 *
10 * Using page is recommended since it handles highmem data as well as
11 * low mem. ->address is restricted to data which has a virtual mapping, and
12 * it will go away in the future. Updating to page can be automated very
13 * easily -- something like
14 *
15 * sg->address = some_ptr;
16 *
17 * can be rewritten as
18 *
19 * sg_set_buf(sg, some_ptr, length);
20 *
21 * and that's it. There's no excuse for not highmem enabling YOUR driver. /jens
22 */
23struct scatterlist {
24#ifdef CONFIG_DEBUG_SG
25 unsigned long sg_magic;
26#endif
27 unsigned long page_link;
28 unsigned int offset; /* for highmem, page offset */
29
30 dma_addr_t dma_address;
31 unsigned int length;
32};
33
34/*
35 * These macros should be used after a pci_map_sg call has been done
36 * to get bus addresses of each of the SG entries and their lengths.
37 * You should only work with the number of sg entries pci_map_sg
38 * returns, or alternatively stop on the first sg_dma_len(sg) which
39 * is 0.
40 */
41#define sg_dma_address(sg) ((sg)->dma_address)
42#define sg_dma_len(sg) ((sg)->length)
43 5
44#define ISA_DMA_THRESHOLD (0xffffffffUL) 6#define ISA_DMA_THRESHOLD (0xffffffffUL)
45 7