dma.c File Reference

#include "mos/mm/dma.h"
#include "mos/mm/mm.h"
#include "mos/mm/paging/paging.h"
#include "mos/mm/physical/pmm.h"
#include "mos/platform/platform.h"
#include "mos/syslog/printk.h"
#include <mos_string.h>

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Macros
#define	pr_fmt(fmt)

Functions
static pfn_t	dmabuf_do_allocate (size_t n_pages, bool do_ref)
pfn_t	dmabuf_allocate (size_t n_pages, ptr_t *vaddr)
	Allocate DMA pages.
bool	dmabuf_free (ptr_t vaddr, ptr_t paddr)
pfn_t	dmabuf_share (void *buf, size_t size)
bool	dmabuf_unshare (ptr_t phys, size_t size, void *buffer)

Macro Definition Documentation

pr_fmt

#define pr_fmt

(

fmt

)

Value:

"dma: " fmt

Definition at line 3 of file dma.c.

Function Documentation

dmabuf_do_allocate()

static pfn_t dmabuf_do_allocate ( size_t n_pages, bool do_ref )

static

Definition at line 15 of file dma.c.

Referenced by dmabuf_allocate(), and dmabuf_share().

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dmabuf_allocate()

pfn_t dmabuf_allocate	(	size_t	n_pages,
		ptr_t *	pages )

Allocate DMA pages.

Parameters

n_pages	Number of pages to allocate
pages	Pointer to store the virtual address of the pages

Returns

physical frame number of the starting page

Definition at line 24 of file dma.c.

Referenced by dmabuf_alloc().

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dmabuf_free()

bool dmabuf_free	(	ptr_t	vaddr,
		ptr_t	paddr )

Definition at line 33 of file dma.c.

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dmabuf_share()

pfn_t dmabuf_share	(	void *	buf,
		size_t	size )

Definition at line 53 of file dma.c.

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dmabuf_unshare()

bool dmabuf_unshare	(	ptr_t	phys,
		size_t	size,
		void *	buffer )

Definition at line 63 of file dma.c.

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