summaryrefslogtreecommitdiffstats
path: root/arch/ia64/include/asm/scatterlist.h
blob: f299a4fb25c86e08fb516fcb1fa22e6df8bab1e1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
#ifndef _ASM_IA64_SCATTERLIST_H
#define _ASM_IA64_SCATTERLIST_H

#include <asm-generic/scatterlist.h>
/*
 * 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
#define ARCH_HAS_SG_CHAIN

#endif /* _ASM_IA64_SCATTERLIST_H */
OpenPOWER on IntegriCloud