remove noise for demo
[qemu] / dma.h
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 "block.h"
16
17 typedef struct {
18     target_phys_addr_t base;
19     target_phys_addr_t len;
20 } ScatterGatherEntry;
21
22 typedef struct {
23     ScatterGatherEntry *sg;
24     int nsg;
25     int nalloc;
26     target_phys_addr_t size;
27 } QEMUSGList;
28
29 void qemu_sglist_init(QEMUSGList *qsg, int alloc_hint);
30 void qemu_sglist_add(QEMUSGList *qsg, target_phys_addr_t base,
31                      target_phys_addr_t len);
32 void qemu_sglist_destroy(QEMUSGList *qsg);
33
34 BlockDriverAIOCB *dma_bdrv_read(BlockDriverState *bs,
35                                 QEMUSGList *sg, uint64_t sector,
36                                 BlockDriverCompletionFunc *cb, void *opaque);
37 BlockDriverAIOCB *dma_bdrv_write(BlockDriverState *bs,
38                                  QEMUSGList *sg, uint64_t sector,
39                                  BlockDriverCompletionFunc *cb, void *opaque);
40 void dma_helper_init(void);
41
42 #endif