diff options
Diffstat (limited to 'hw/usb')
| -rw-r--r-- | hw/usb/hcd-ehci.c | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c index 1406b84d5e..0bdfbe8b35 100644 --- a/hw/usb/hcd-ehci.c +++ b/hw/usb/hcd-ehci.c @@ -365,6 +365,7 @@ struct EHCIQueue { uint32_t seen; uint64_t ts; int async; + int revalidate; /* cached data from guest - needs to be flushed * when guest removes an entry (doorbell, handshake sequence) @@ -775,7 +776,18 @@ static EHCIQueue *ehci_find_queue_by_qh(EHCIState *ehci, uint32_t addr, return NULL; } -static void ehci_queues_rip_unused(EHCIState *ehci, int async, int flush) +static void ehci_queues_tag_unused_async(EHCIState *ehci) +{ + EHCIQueue *q; + + QTAILQ_FOREACH(q, &ehci->aqueues, next) { + if (!q->seen) { + q->revalidate = 1; + } + } +} + +static void ehci_queues_rip_unused(EHCIState *ehci, int async) { EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues; uint64_t maxage = FRAME_TIMER_NS * ehci->maxframes * 4; @@ -787,7 +799,7 @@ static void ehci_queues_rip_unused(EHCIState *ehci, int async, int flush) q->ts = ehci->last_run_ns; continue; } - if (!flush && ehci->last_run_ns < q->ts + maxage) { + if (ehci->last_run_ns < q->ts + maxage) { continue; } ehci_free_queue(q); @@ -1631,7 +1643,7 @@ static int ehci_state_waitlisthead(EHCIState *ehci, int async) ehci_set_usbsts(ehci, USBSTS_REC); } - ehci_queues_rip_unused(ehci, async, 0); + ehci_queues_rip_unused(ehci, async); /* Find the head of the list (4.9.1.1) */ for(i = 0; i < MAX_QH; i++) { @@ -1716,6 +1728,7 @@ static EHCIQueue *ehci_state_fetchqh(EHCIState *ehci, int async) EHCIPacket *p; uint32_t entry, devaddr; EHCIQueue *q; + EHCIqh qh; entry = ehci_get_fetch_addr(ehci, async); q = ehci_find_queue_by_qh(ehci, entry, async); @@ -1733,7 +1746,17 @@ static EHCIQueue *ehci_state_fetchqh(EHCIState *ehci, int async) } get_dwords(ehci, NLPTR_GET(q->qhaddr), - (uint32_t *) &q->qh, sizeof(EHCIqh) >> 2); + (uint32_t *) &qh, sizeof(EHCIqh) >> 2); + if (q->revalidate && (q->qh.epchar != qh.epchar || + q->qh.epcap != qh.epcap || + q->qh.current_qtd != qh.current_qtd)) { + ehci_free_queue(q); + q = ehci_alloc_queue(ehci, entry, async); + q->seen++; + p = NULL; + } + q->qh = qh; + q->revalidate = 0; ehci_trace_qh(q, NLPTR_GET(q->qhaddr), &q->qh); devaddr = get_field(q->qh.epchar, QH_EPCHAR_DEVADDR); @@ -2228,7 +2251,7 @@ static void ehci_advance_async_state(EHCIState *ehci) */ if (ehci->usbcmd & USBCMD_IAAD) { /* Remove all unseen qhs from the async qhs queue */ - ehci_queues_rip_unused(ehci, async, 1); + ehci_queues_tag_unused_async(ehci); DPRINTF("ASYNC: doorbell request acknowledged\n"); ehci->usbcmd &= ~USBCMD_IAAD; ehci_set_interrupt(ehci, USBSTS_IAA); @@ -2281,7 +2304,7 @@ static void ehci_advance_periodic_state(EHCIState *ehci) ehci_set_fetch_addr(ehci, async,entry); ehci_set_state(ehci, async, EST_FETCHENTRY); ehci_advance_state(ehci, async); - ehci_queues_rip_unused(ehci, async, 0); + ehci_queues_rip_unused(ehci, async); break; default: |