android_kernel_xiaomi_sm8350/include/asm-x86/scatterlist_32.h
Jens Axboe 38d375561f i386: enable sg chaining
We don't need to do more on x86, there's no iommu to be worried about.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-16 11:26:01 +02:00

26 lines
618 B
C

#ifndef _I386_SCATTERLIST_H
#define _I386_SCATTERLIST_H
#include <asm/types.h>
struct scatterlist {
struct page *page;
unsigned int offset;
dma_addr_t dma_address;
unsigned int length;
};
#define ARCH_HAS_SG_CHAIN
/* 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)
#define ISA_DMA_THRESHOLD (0x00ffffff)
#endif /* !(_I386_SCATTERLIST_H) */