BlockAIOCB *dma_bdrv_io( BlockDriverState *bs, QEMUSGList *sg, uint64_t sector_num, DMAIOFunc *io_func, BlockCompletionFunc *cb, void *opaque, DMADirection dir) { DMAAIOCB *dbs = qemu_aio_get(&dma_aiocb_info, bs, cb, opaque); trace_dma_bdrv_io(dbs, bs, sector_num, (dir == DMA_DIRECTION_TO_DEVICE)); dbs->acb = NULL; dbs->bs = bs; dbs->sg = sg; dbs->sector_num = sector_num; dbs->sg_cur_index = 0; dbs->sg_cur_byte = 0; dbs->dir = dir; dbs->io_func = io_func; dbs->bh = NULL; qemu_iovec_init(&dbs->iov, sg->nsg); dma_bdrv_cb(dbs, 0); return &dbs->common; }