trident_memory.c File Reference

#include <asm/io.h>
#include <linux/pci.h>
#include <linux/time.h>
#include <linux/mutex.h>
#include <sound/core.h>
#include "trident.h"

Go to the source code of this file.

Macros
#define	__set_tlb_bus(trident, page, ptr, addr)
#define	__tlb_to_ptr(trident, page)   (void*)((trident)->tlb.shadow_entries[page])
#define	__tlb_to_addr(trident, page)   (dma_addr_t)le32_to_cpu((trident->tlb.entries[page]) & ~(SNDRV_TRIDENT_PAGE_SIZE - 1))
#define	UNIT_PAGES   (PAGE_SIZE / SNDRV_TRIDENT_PAGE_SIZE)
#define	ALIGN_PAGE_SIZE   (SNDRV_TRIDENT_PAGE_SIZE * UNIT_PAGES)
#define	MAX_ALIGN_PAGES   (SNDRV_TRIDENT_MAX_PAGES / UNIT_PAGES)
#define	get_aligned_page(offset)   ((offset) / ALIGN_PAGE_SIZE)
#define	aligned_page_offset(page)   ((page) * ALIGN_PAGE_SIZE)
#define	page_to_ptr(trident, page)   __tlb_to_ptr(trident, (page) * UNIT_PAGES)
#define	page_to_addr(trident, page)   __tlb_to_addr(trident, (page) * UNIT_PAGES)
#define	firstpg(blk)   (((struct snd_trident_memblk_arg *)snd_util_memblk_argptr(blk))->first_page)
#define	lastpg(blk)   (((struct snd_trident_memblk_arg *)snd_util_memblk_argptr(blk))->last_page)

Functions
struct snd_util_memblk *	snd_trident_alloc_pages (struct snd_trident *trident, struct snd_pcm_substream *substream)
int	snd_trident_free_pages (struct snd_trident *trident, struct snd_util_memblk *blk)

Macro Definition Documentation

#define __set_tlb_bus	(		trident,
			page,
			ptr,
			addr
	)

Value:

do { (trident)->tlb.entries[page] = cpu_to_le32((addr) & ~(SNDRV_TRIDENT_PAGE_SIZE-1)); \
         (trident)->tlb.shadow_entries[page] = (ptr); } while (0)

Definition at line 37 of file trident_memory.c.

#define __tlb_to_addr	(		trident,
			page
	)		(dma_addr_t)le32_to_cpu((trident->tlb.entries[page]) & ~(SNDRV_TRIDENT_PAGE_SIZE - 1))

Definition at line 42 of file trident_memory.c.

#define __tlb_to_ptr	(		trident,
			page
	)		(void*)((trident)->tlb.shadow_entries[page])

Definition at line 40 of file trident_memory.c.

#define ALIGN_PAGE_SIZE   (SNDRV_TRIDENT_PAGE_SIZE * UNIT_PAGES)

Definition at line 89 of file trident_memory.c.

#define aligned_page_offset

(

page

)

((page) * ALIGN_PAGE_SIZE)

Definition at line 97 of file trident_memory.c.

#define firstpg

(

blk

)

(((struct snd_trident_memblk_arg *)snd_util_memblk_argptr(blk))->first_page)

Definition at line 133 of file trident_memory.c.

#define get_aligned_page

(

offset

)

((offset) / ALIGN_PAGE_SIZE)

Definition at line 96 of file trident_memory.c.

#define lastpg

(

blk

)

(((struct snd_trident_memblk_arg *)snd_util_memblk_argptr(blk))->last_page)

Definition at line 134 of file trident_memory.c.

#define MAX_ALIGN_PAGES   (SNDRV_TRIDENT_MAX_PAGES / UNIT_PAGES)

Definition at line 90 of file trident_memory.c.

#define page_to_addr	(		trident,
			page
	)		__tlb_to_addr(trident, (page) * UNIT_PAGES)

Definition at line 99 of file trident_memory.c.

#define page_to_ptr	(		trident,
			page
	)		__tlb_to_ptr(trident, (page) * UNIT_PAGES)

Definition at line 98 of file trident_memory.c.

#define UNIT_PAGES   (PAGE_SIZE / SNDRV_TRIDENT_PAGE_SIZE)

Definition at line 88 of file trident_memory.c.

Function Documentation

struct snd_util_memblk* snd_trident_alloc_pages ( struct snd_trident *  trident, struct snd_pcm_substream *  substream  )

read

Definition at line 282 of file trident_memory.c.

int snd_trident_free_pages	(	struct snd_trident *	trident,
		struct snd_util_memblk *	blk
	)

Definition at line 297 of file trident_memory.c.