47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
|
#ifndef _ASM_POWERPC_SCATTERLIST_H
|
||
|
|
#define _ASM_POWERPC_SCATTERLIST_H
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2001 PPC64 Team, IBM Corp
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License
|
||
|
|
* as published by the Free Software Foundation; either version
|
||
|
|
* 2 of the License, or (at your option) any later version.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef __KERNEL__
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <asm/dma.h>
|
||
|
|
|
||
|
|
struct scatterlist {
|
||
|
|
#ifdef CONFIG_DEBUG_SG
|
||
|
|
unsigned long sg_magic;
|
||
|
|
#endif
|
||
|
|
unsigned long page_link;
|
||
|
|
unsigned int offset;
|
||
|
|
unsigned int length;
|
||
|
|
|
||
|
|
/* For TCE or SWIOTLB support */
|
||
|
|
dma_addr_t dma_address;
|
||
|
|
u32 dma_length;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* These macros should be used after a dma_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)->dma_length)
|
||
|
|
|
||
|
|
#ifdef __powerpc64__
|
||
|
|
#define ISA_DMA_THRESHOLD (~0UL)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define ARCH_HAS_SG_CHAIN
|
||
|
|
|
||
|
|
#endif /* __KERNEL__ */
|
||
|
|
#endif /* _ASM_POWERPC_SCATTERLIST_H */
|