| #ifndef _ASM_IA64_SCATTERLIST_H | |
| #define _ASM_IA64_SCATTERLIST_H | |
| /* | |
| * Modified 1998-1999, 2001-2002, 2004 | |
| * David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co | |
| */ | |
| struct scatterlist { | |
| struct page *page; | |
| unsigned int offset; | |
| unsigned int length; /* buffer length */ | |
| dma_addr_t dma_address; | |
| unsigned int dma_length; | |
| }; | |
| /* | |
| * It used to be that ISA_DMA_THRESHOLD had something to do with the | |
| * DMA-limits of ISA-devices. Nowadays, its only remaining use (apart | |
| * from the aha1542.c driver, which isn't 64-bit clean anyhow) is to | |
| * tell the block-layer (via BLK_BOUNCE_ISA) what the max. physical | |
| * address of a page is that is allocated with GFP_DMA. On IA-64, | |
| * that's 4GB - 1. | |
| */ | |
| #define ISA_DMA_THRESHOLD 0xffffffff | |
| #endif /* _ASM_IA64_SCATTERLIST_H */ |