diff options
| -rw-r--r-- | hw/ide/ahci.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c index 3f4fc77ab6..56a4867cd0 100644 --- a/hw/ide/ahci.c +++ b/hw/ide/ahci.c @@ -1160,6 +1160,11 @@ static void ahci_start_dma(IDEDMA *dma, IDEState *s, dma_cb(s, 0); } +static void ahci_restart_dma(IDEDMA *dma) +{ + /* Nothing to do, ahci_start_dma already resets s->io_buffer_offset. */ +} + /** * Called in DMA R/W chains to read the PRDT, utilizing ahci_populate_sglist. * Not currently invoked by PIO R/W chains, @@ -1248,6 +1253,7 @@ static void ahci_irq_set(void *opaque, int n, int level) static const IDEDMAOps ahci_dma_ops = { .start_dma = ahci_start_dma, + .restart_dma = ahci_restart_dma, .start_transfer = ahci_start_transfer, .prepare_buf = ahci_dma_prepare_buf, .commit_buf = ahci_commit_buf, @@ -1282,6 +1288,7 @@ void ahci_init(AHCIState *s, DeviceState *qdev, AddressSpace *as, int ports) ad->port_no = i; ad->port.dma = &ad->dma; ad->port.dma->ops = &ahci_dma_ops; + ide_register_restart_cb(&ad->port); } } @@ -1360,16 +1367,16 @@ static int ahci_state_post_load(void *opaque, int version_id) map_page(s->as, &ad->res_fis, ((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256); /* - * All pending i/o should be flushed out on a migrate. However, - * we might not have cleared the busy_slot since this is done - * in a bh. Also, issue i/o against any slots that are pending. + * If an error is present, ad->busy_slot will be valid and not -1. + * In this case, an operation is waiting to resume and will re-check + * for additional AHCI commands to execute upon completion. + * + * In the case where no error was present, busy_slot will be -1, + * and we should check to see if there are additional commands waiting. */ - if ((ad->busy_slot != -1) && - !(ad->port.ifs[0].status & (BUSY_STAT|DRQ_STAT))) { - pr->cmd_issue &= ~(1 << ad->busy_slot); - ad->busy_slot = -1; + if (ad->busy_slot == -1) { + check_cmd(s, i); } - check_cmd(s, i); } return 0; |