Lines Matching refs:dbs
56 DMAAIOCB *dbs = (DMAAIOCB *)opaque;
58 qemu_bh_delete(dbs->bh);
59 dbs->bh = NULL;
65 DMAAIOCB *dbs = (DMAAIOCB *)opaque;
67 dbs->bh = qemu_bh_new(reschedule_dma, dbs);
68 qemu_bh_schedule(dbs->bh);
71 static void dma_bdrv_unmap(DMAAIOCB *dbs)
75 for (i = 0; i < dbs->iov.niov; ++i) {
76 cpu_physical_memory_unmap(dbs->iov.iov[i].iov_base,
77 dbs->iov.iov[i].iov_len, !dbs->is_write,
78 dbs->iov.iov[i].iov_len);
84 DMAAIOCB *dbs = (DMAAIOCB *)opaque;
88 dbs->acb = NULL;
89 dbs->sector_num += dbs->iov.size / 512;
90 dma_bdrv_unmap(dbs);
91 qemu_iovec_reset(&dbs->iov);
93 if (dbs->sg_cur_index == dbs->sg->nsg || ret < 0) {
94 dbs->common.cb(dbs->common.opaque, ret);
95 qemu_iovec_destroy(&dbs->iov);
96 qemu_aio_release(dbs);
100 while (dbs->sg_cur_index < dbs->sg->nsg) {
101 cur_addr = dbs->sg->sg[dbs->sg_cur_index].base + dbs->sg_cur_byte;
102 cur_len = dbs->sg->sg[dbs->sg_cur_index].len - dbs->sg_cur_byte;
103 mem = cpu_physical_memory_map(cur_addr, &cur_len, !dbs->is_write);
106 qemu_iovec_add(&dbs->iov, mem, cur_len);
107 dbs->sg_cur_byte += cur_len;
108 if (dbs->sg_cur_byte == dbs->sg->sg[dbs->sg_cur_index].len) {
109 dbs->sg_cur_byte = 0;
110 ++dbs->sg_cur_index;
114 if (dbs->iov.size == 0) {
115 cpu_register_map_client(dbs, continue_after_map_failure);
119 if (dbs->is_write) {
120 dbs->acb = bdrv_aio_writev(dbs->bs, dbs->sector_num, &dbs->iov,
121 dbs->iov.size / 512, dma_bdrv_cb, dbs);
123 dbs->acb = bdrv_aio_readv(dbs->bs, dbs->sector_num, &dbs->iov,
124 dbs->iov.size / 512, dma_bdrv_cb, dbs);
126 if (!dbs->acb) {
127 dma_bdrv_unmap(dbs);
128 qemu_iovec_destroy(&dbs->iov);
135 DMAAIOCB *dbs = container_of(acb, DMAAIOCB, common);
137 if (dbs->acb) {
138 bdrv_aio_cancel(dbs->acb);
152 DMAAIOCB *dbs = qemu_aio_get(&dma_aio_pool, bs, cb, opaque);
154 dbs->acb = NULL;
155 dbs->bs = bs;
156 dbs->sg = sg;
157 dbs->sector_num = sector_num;
158 dbs->sg_cur_index = 0;
159 dbs->sg_cur_byte = 0;
160 dbs->is_write = is_write;
161 dbs->bh = NULL;
162 qemu_iovec_init(&dbs->iov, sg->nsg);
163 dma_bdrv_cb(dbs, 0);
164 if (!dbs->acb) {
165 qemu_aio_release(dbs);
168 return &dbs->common;
