1/* 2 * DMA helper functions 3 * 4 * Copyright (c) 2009 Red Hat 5 * 6 * This work is licensed under the terms of the GNU General Public License 7 * (GNU GPL), version 2 or later. 8 */ 9 10#ifndef DMA_H 11#define DMA_H 12 13#include <stdio.h> 14//#include "cpu.h" 15#include "hw/hw.h" 16#include "block.h" 17 18typedef struct { 19 target_phys_addr_t base; 20 target_phys_addr_t len; 21} ScatterGatherEntry; 22 23typedef struct { 24 ScatterGatherEntry *sg; 25 int nsg; 26 int nalloc; 27 target_phys_addr_t size; 28} QEMUSGList; 29 30void qemu_sglist_init(QEMUSGList *qsg, int alloc_hint); 31void qemu_sglist_add(QEMUSGList *qsg, target_phys_addr_t base, 32 target_phys_addr_t len); 33void qemu_sglist_destroy(QEMUSGList *qsg); 34 35BlockDriverAIOCB *dma_bdrv_read(BlockDriverState *bs, 36 QEMUSGList *sg, uint64_t sector, 37 BlockDriverCompletionFunc *cb, void *opaque); 38BlockDriverAIOCB *dma_bdrv_write(BlockDriverState *bs, 39 QEMUSGList *sg, uint64_t sector, 40 BlockDriverCompletionFunc *cb, void *opaque); 41#endif 42