[SCSI] lpfc 8.2.3 : Added support for ASICs that report temperature
[linux-2.6] / include / asm-ia64 / scatterlist.h
1 #ifndef _ASM_IA64_SCATTERLIST_H
2 #define _ASM_IA64_SCATTERLIST_H
3
4 /*
5  * Modified 1998-1999, 2001-2002, 2004
6  *      David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co
7  */
8
9 #include <asm/types.h>
10
11 struct scatterlist {
12 #ifdef CONFIG_DEBUG_SG
13         unsigned long sg_magic;
14 #endif
15         unsigned long page_link;
16         unsigned int offset;
17         unsigned int length;    /* buffer length */
18
19         dma_addr_t dma_address;
20         unsigned int dma_length;
21 };
22
23 /*
24  * It used to be that ISA_DMA_THRESHOLD had something to do with the
25  * DMA-limits of ISA-devices.  Nowadays, its only remaining use (apart
26  * from the aha1542.c driver, which isn't 64-bit clean anyhow) is to
27  * tell the block-layer (via BLK_BOUNCE_ISA) what the max. physical
28  * address of a page is that is allocated with GFP_DMA.  On IA-64,
29  * that's 4GB - 1.
30  */
31 #define ISA_DMA_THRESHOLD       0xffffffff
32
33 #define sg_dma_len(sg)          ((sg)->dma_length)
34 #define sg_dma_address(sg)      ((sg)->dma_address)
35
36 #define ARCH_HAS_SG_CHAIN
37
38 #endif /* _ASM_IA64_SCATTERLIST_H */