Archipelago » qemu

/*

 * 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 "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);

#endif