Revision 7403b14e dma-helpers.c
| b/dma-helpers.c | ||
|---|---|---|
| 70 | 70 |
qemu_bh_schedule(dbs->bh); |
| 71 | 71 |
} |
| 72 | 72 |
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| 73 |
static void dma_bdrv_cb(void *opaque, int ret)
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| 73 |
static void dma_bdrv_unmap(DMAAIOCB *dbs)
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| 74 | 74 |
{
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| 75 |
DMAAIOCB *dbs = (DMAAIOCB *)opaque; |
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| 76 |
target_phys_addr_t cur_addr, cur_len; |
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| 77 |
void *mem; |
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| 78 | 75 |
int i; |
| 79 | 76 |
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| 80 |
dbs->acb = NULL; |
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| 81 |
dbs->sector_num += dbs->iov.size / 512; |
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| 82 | 77 |
for (i = 0; i < dbs->iov.niov; ++i) {
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| 83 | 78 |
cpu_physical_memory_unmap(dbs->iov.iov[i].iov_base, |
| 84 | 79 |
dbs->iov.iov[i].iov_len, !dbs->is_write, |
| 85 | 80 |
dbs->iov.iov[i].iov_len); |
| 86 | 81 |
} |
| 82 |
} |
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| 83 |
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void dma_bdrv_cb(void *opaque, int ret) |
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{
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DMAAIOCB *dbs = (DMAAIOCB *)opaque; |
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target_phys_addr_t cur_addr, cur_len; |
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void *mem; |
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dbs->acb = NULL; |
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dbs->sector_num += dbs->iov.size / 512; |
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dma_bdrv_unmap(dbs); |
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| 87 | 93 |
qemu_iovec_reset(&dbs->iov); |
| 88 | 94 |
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| 89 | 95 |
if (dbs->sg_cur_index == dbs->sg->nsg || ret < 0) {
|
| ... | ... | |
| 119 | 125 |
dbs->acb = bdrv_aio_readv(dbs->bs, dbs->sector_num, &dbs->iov, |
| 120 | 126 |
dbs->iov.size / 512, dma_bdrv_cb, dbs); |
| 121 | 127 |
} |
| 128 |
if (!dbs->acb) {
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dma_bdrv_unmap(dbs); |
|
| 130 |
qemu_iovec_destroy(&dbs->iov); |
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| 131 |
return; |
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| 132 |
} |
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| 122 | 133 |
} |
| 123 | 134 |
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| 124 | 135 |
static BlockDriverAIOCB *dma_bdrv_io( |
| ... | ... | |
| 138 | 149 |
dbs->bh = NULL; |
| 139 | 150 |
qemu_iovec_init(&dbs->iov, sg->nsg); |
| 140 | 151 |
dma_bdrv_cb(dbs, 0); |
| 152 |
if (!dbs->acb) {
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qemu_aio_release(dbs); |
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return NULL; |
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} |
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| 141 | 156 |
return &dbs->common; |
| 142 | 157 |
} |
| 143 | 158 |
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