mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 08:07:10 +07:00
7cdad48297
The old __address element in struct scatterlist remained from older kernels because the ARM DMA emulation code made use of it. Move this field into struct dma_struct, and convert DMA emulation code to setup a SG entry as required. Also, convert DMA emulation code to use the new DMA API rather than the PCI DMA API. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
25 lines
728 B
C
25 lines
728 B
C
#ifndef _ASMARM_SCATTERLIST_H
|
|
#define _ASMARM_SCATTERLIST_H
|
|
|
|
#include <asm/memory.h>
|
|
#include <asm/types.h>
|
|
|
|
struct scatterlist {
|
|
struct page *page; /* buffer page */
|
|
unsigned int offset; /* buffer offset */
|
|
dma_addr_t dma_address; /* dma address */
|
|
unsigned int length; /* 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)
|
|
|
|
#endif /* _ASMARM_SCATTERLIST_H */
|