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#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 {
struct page *page;
unsigned int offset;
unsigned int length;
/* For TCE 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)
#ifdef __powerpc64__
#define sg_dma_len(sg) ((sg)->dma_length)
#else
#define sg_dma_len(sg) ((sg)->length)
#endif
#ifdef __powerpc64__
#define ISA_DMA_THRESHOLD (~0UL)
#endif
#define ARCH_HAS_SG_CHAIN
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SCATTERLIST_H */
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