blob: 4fd80b972385723718b26c55a7139373bd301c6b [file] [log] [blame]
/*
* DMA helper functions
*
* Copyright (c) 2009 Red Hat
*
* This work is licensed under the terms of the GNU General Public License
* (GNU GPL), version 2 or later.
*/
#ifndef DMA_H
#define DMA_H
#include <stdio.h>
//#include "cpu.h"
#include "hw/hw.h"
#include "block.h"
typedef struct {
target_phys_addr_t base;
target_phys_addr_t len;
} ScatterGatherEntry;
typedef struct {
ScatterGatherEntry *sg;
int nsg;
int nalloc;
target_phys_addr_t size;
} QEMUSGList;
void qemu_sglist_init(QEMUSGList *qsg, int alloc_hint);
void qemu_sglist_add(QEMUSGList *qsg, target_phys_addr_t base,
target_phys_addr_t len);
void qemu_sglist_destroy(QEMUSGList *qsg);
BlockDriverAIOCB *dma_bdrv_read(BlockDriverState *bs,
QEMUSGList *sg, uint64_t sector,
BlockDriverCompletionFunc *cb, void *opaque);
BlockDriverAIOCB *dma_bdrv_write(BlockDriverState *bs,
QEMUSGList *sg, uint64_t sector,
BlockDriverCompletionFunc *cb, void *opaque);
void dma_helper_init(void);
#endif