linux-pinenote/arch/alpha/include/asm/scatterlist.h

#ifndef _ALPHA_SCATTERLIST_H
#define _ALPHA_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;

	dma_addr_t dma_address;
	__u32 dma_length;
};

#define sg_dma_address(sg)	((sg)->dma_address)
#define sg_dma_len(sg)		((sg)->dma_length)

#define ISA_DMA_THRESHOLD (~0UL)

#endif /* !(_ALPHA_SCATTERLIST_H) */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 15:20:36 -07:00			`#ifndef _ALPHA_SCATTERLIST_H`
			`#define _ALPHA_SCATTERLIST_H`

			`#include <asm/page.h>`
PCI: scatterlist.h needs types.h Most architectures' scatterlist.h use the type dma_addr_t, but omit to include <asm/types.h> which defines it. This could lead to build failures, so let's add the missing includes. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 2007-03-06 02:45:12 -08:00			`#include <asm/types.h>`
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 15:20:36 -07:00
			`struct scatterlist {`
Add CONFIG_DEBUG_SG sg validation Add a Kconfig entry which will toggle some sanity checks on the sg entry and tables. Signed-off-by: Jens Axboe <jens.axboe@oracle.com> 2007-10-22 20:01:06 +02:00			`#ifdef CONFIG_DEBUG_SG`
			`unsigned long sg_magic;`
			`#endif`
Change table chaining layout Change the page member of the scatterlist structure to be an unsigned long, and encode more stuff in the lower bits: - Bits 0 and 1 zero: this is a normal sg entry. Next sg entry is located at sg + 1. - Bit 0 set: this is a chain entry, the next real entry is at ->page_link with the two low bits masked off. - Bit 1 set: this is the final entry in the sg entry. sg_next() will return NULL when passed such an entry. It's thus important that sg table users use the proper accessors to get and set the page member. Signed-off-by: Jens Axboe <jens.axboe@oracle.com> 2007-10-22 19:57:20 +02:00			`unsigned long page_link;`
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 15:20:36 -07:00			`unsigned int offset;`

			`unsigned int length;`

			`dma_addr_t dma_address;`
			`__u32 dma_length;`
			`};`

			`#define sg_dma_address(sg) ((sg)->dma_address)`
			`#define sg_dma_len(sg) ((sg)->dma_length)`

			`#define ISA_DMA_THRESHOLD (~0UL)`

			`#endif /* !(_ALPHA_SCATTERLIST_H) */`