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c16b5a2ca0
Now that we have a separate aio pool structure we can remove those aio pool details from BlockDriver. Every driver supporting AIO now needs to declare a static AIOPool with the aiocb size and the cancellation method. This cleans up the current code considerably and will make it cleaner and more obvious to support two different aio implementations behind a single BlockDriver. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
/*
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* DMA helper functions
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*
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* Copyright (c) 2009 Red Hat
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*
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* This work is licensed under the terms of the GNU General Public License
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* (GNU GPL), version 2 or later.
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*/
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#ifndef DMA_H
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#define DMA_H
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#include <stdio.h>
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//#include "cpu.h"
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#include "hw/hw.h"
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#include "block.h"
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typedef struct {
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target_phys_addr_t base;
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target_phys_addr_t len;
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} ScatterGatherEntry;
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typedef struct {
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ScatterGatherEntry *sg;
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int nsg;
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int nalloc;
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target_phys_addr_t size;
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} QEMUSGList;
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void qemu_sglist_init(QEMUSGList *qsg, int alloc_hint);
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void qemu_sglist_add(QEMUSGList *qsg, target_phys_addr_t base,
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target_phys_addr_t len);
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void qemu_sglist_destroy(QEMUSGList *qsg);
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BlockDriverAIOCB *dma_bdrv_read(BlockDriverState *bs,
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QEMUSGList *sg, uint64_t sector,
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BlockDriverCompletionFunc *cb, void *opaque);
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BlockDriverAIOCB *dma_bdrv_write(BlockDriverState *bs,
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QEMUSGList *sg, uint64_t sector,
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BlockDriverCompletionFunc *cb, void *opaque);
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#endif
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