File: scatterlist.h

package info (click to toggle)
linux-2.6.24 2.6.24-6~etchnhalf.9etch3
  • links: PTS
  • area: main
  • in suites: etch
  • size: 317,768 kB
  • ctags: 974,658
  • sloc: ansic: 5,384,710; asm: 212,187; makefile: 14,202; perl: 7,066; cpp: 3,159; python: 2,833; yacc: 2,629; sh: 2,526; lex: 1,511; lisp: 218; awk: 96; pascal: 41
file content (27 lines) | stat: -rw-r--r-- 627 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
#ifndef _ASM_PARISC_SCATTERLIST_H
#define _ASM_PARISC_SCATTERLIST_H

#include <asm/page.h>
#include <asm/types.h>

struct scatterlist {
#ifdef CONFIG_DEBUG_SG
	unsigned long sg_magic;
#endif
	unsigned long page_link;
	unsigned int offset;

	unsigned int length;

	/* an IOVA can be 64-bits on some PA-Risc platforms. */
	dma_addr_t iova;	/* I/O Virtual Address */
	__u32      iova_length; /* bytes mapped */
};

#define sg_virt_addr(sg) ((unsigned long)sg_virt(sg))
#define sg_dma_address(sg) ((sg)->iova)
#define sg_dma_len(sg)     ((sg)->iova_length)

#define ISA_DMA_THRESHOLD (~0UL)

#endif /* _ASM_PARISC_SCATTERLIST_H */