diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-01-11 15:34:05 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-11 15:34:05 +0100 |
| commit | d19b85db9d5c44a4c21dcb10d6fbadaa4425ab2a (patch) | |
| tree | 250be7a5a29069f7d1f4524fa45ab0e988833025 /arch/xtensa/include/asm/scatterlist.h | |
| parent | 490dea45d00f01847ebebd007685d564aaf2cd98 (diff) | |
| parent | c59765042f53a79a7a65585042ff463b69cb248c (diff) | |
Merge commit 'v2.6.29-rc1' into timers/urgent
Diffstat (limited to 'arch/xtensa/include/asm/scatterlist.h')
| -rw-r--r-- | arch/xtensa/include/asm/scatterlist.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/scatterlist.h b/arch/xtensa/include/asm/scatterlist.h new file mode 100644 index 00000000000..810080bb0a2 --- /dev/null +++ b/arch/xtensa/include/asm/scatterlist.h @@ -0,0 +1,39 @@ +/* + * include/asm-xtensa/scatterlist.h + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2001 - 2005 Tensilica Inc. + */ + +#ifndef _XTENSA_SCATTERLIST_H +#define _XTENSA_SCATTERLIST_H + +#include <asm/types.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 (~0UL) + +#endif /* _XTENSA_SCATTERLIST_H */ |