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r: 198855
b: refs/heads/master
c: 7676679
h: refs/heads/master
i:
  198853: 515ab77
  198851: 58bfbce
  198847: af2d070
v: v3
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FUJITA Tomonori authored and Linus Torvalds committed May 27, 2010
1 parent 226aed8 commit c7cbb06
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 3e6e3da8d5eafb5f849a14272ed725f85bed5dc8
refs/heads/master: 7676679f659ac0112cad02789eb5560da2814e56
39 changes: 1 addition & 38 deletions trunk/arch/mn10300/include/asm/scatterlist.h
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#ifndef _ASM_SCATTERLIST_H
#define _ASM_SCATTERLIST_H

#include <asm/types.h>

/*
* Drivers must set either ->address or (preferred) page and ->offset
* to indicate where data must be transferred to/from.
*
* Using page is recommended since it handles highmem data as well as
* low mem. ->address is restricted to data which has a virtual mapping, and
* it will go away in the future. Updating to page can be automated very
* easily -- something like
*
* sg->address = some_ptr;
*
* can be rewritten as
*
* sg_set_page(virt_to_page(some_ptr));
* sg->offset = (unsigned long) some_ptr & ~PAGE_MASK;
*
* and that's it. There's no excuse for not highmem enabling YOUR driver. /jens
*/
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;
};
#include <asm-generic/scatterlist.h>

#define ISA_DMA_THRESHOLD (0x00ffffff)

/*
* 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.
*/
#define sg_dma_address(sg) ((sg)->dma_address)
#define sg_dma_len(sg) ((sg)->length)

#endif /* _ASM_SCATTERLIST_H */

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