#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 */structscatterlist{structpage*page;unsignedintoffset;unsignedintlength;/* buffer length */dma_addr_tdma_address;unsignedintdma_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