kernel-fxtec-pro1x/arch/x86/include/asm/generic-scatterlist.h
Arnd Bergmann 4adc667593 x86: add copies of some headers to convert to asm-generic
Just an intermediate step to make reviewing easier.
These files are identical copies of the existing headers.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
LKML-Reference: <cover.1245354003.git.arnd@arndb.de>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-18 14:39:40 -07:00

33 lines
778 B
C

#ifndef _ASM_X86_SCATTERLIST_H
#define _ASM_X86_SCATTERLIST_H
#include <asm/types.h>
struct scatterlist {
#ifdef CONFIG_DEBUG_SG
unsigned long sg_magic;
#endif
unsigned long page_link;
unsigned int offset;
unsigned int length;
dma_addr_t dma_address;
unsigned int dma_length;
};
#define ARCH_HAS_SG_CHAIN
#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)
#ifdef CONFIG_X86_32
# define sg_dma_len(sg) ((sg)->length)
#else
# define sg_dma_len(sg) ((sg)->dma_length)
#endif
#endif /* _ASM_X86_SCATTERLIST_H */