mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 15:43:59 +08:00
29 lines
733 B
C
29 lines
733 B
C
#ifndef _BLACKFIN_SCATTERLIST_H
|
|
#define _BLACKFIN_SCATTERLIST_H
|
|
|
|
#include <linux/mm.h>
|
|
|
|
struct scatterlist {
|
|
#ifdef CONFIG_DEBUG_SG
|
|
unsigned long sg_magic;
|
|
#endif
|
|
unsigned long page_link;
|
|
unsigned int offset;
|
|
dma_addr_t dma_address;
|
|
unsigned int length;
|
|
};
|
|
|
|
/*
|
|
* 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, or alternatively stop on the first sg_dma_len(sg) which
|
|
* is 0.
|
|
*/
|
|
#define sg_dma_address(sg) ((sg)->dma_address)
|
|
#define sg_dma_len(sg) ((sg)->length)
|
|
|
|
#define ISA_DMA_THRESHOLD (0xffffffff)
|
|
|
|
#endif /* !(_BLACKFIN_SCATTERLIST_H) */
|