blob: f299a4fb25c86e08fb516fcb1fa22e6df8bab1e1 (
plain) (
blame)
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 */
|