diff options
Diffstat (limited to 'hw/usb-ehci.c')
| -rw-r--r-- | hw/usb-ehci.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/hw/usb-ehci.c b/hw/usb-ehci.c index 5de0cdad9e..156ccd1aa0 100644 --- a/hw/usb-ehci.c +++ b/hw/usb-ehci.c @@ -1114,10 +1114,10 @@ err: switch(q->usb_status) { case USB_RET_NODEV: - fprintf(stderr, "USB no device\n"); + q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_XACTERR); + ehci_record_interrupt(q->ehci, USBSTS_ERRINT); break; case USB_RET_STALL: - fprintf(stderr, "USB stall\n"); q->qh.token |= QTD_TOKEN_HALT; ehci_record_interrupt(q->ehci, USBSTS_ERRINT); break; @@ -1133,8 +1133,7 @@ err: } break; case USB_RET_BABBLE: - fprintf(stderr, "USB babble TODO\n"); - q->qh.token |= QTD_TOKEN_BABBLE; + q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_BABBLE); ehci_record_interrupt(q->ehci, USBSTS_ERRINT); break; default: @@ -1792,15 +1791,21 @@ static int ehci_state_writeback(EHCIQueue *q, int async) put_dwords(NLPTR_GET(q->qtdaddr),(uint32_t *) &q->qh.next_qtd, sizeof(EHCIqtd) >> 2); - /* TODO confirm next state. For now, keep going if async - * but stop after one qtd if periodic + /* + * EHCI specs say go horizontal here. + * + * We can also advance the queue here for performance reasons. We + * need to take care to only take that shortcut in case we've + * processed the qtd just written back without errors, i.e. halt + * bit is clear. */ - //if (async) { + if (q->qh.token & QTD_TOKEN_HALT) { + ehci_set_state(q->ehci, async, EST_HORIZONTALQH); + again = 1; + } else { ehci_set_state(q->ehci, async, EST_ADVANCEQUEUE); again = 1; - //} else { - // ehci_set_state(ehci, async, EST_ACTIVE); - //} + } return again; } |