diff options
Diffstat (limited to 'hw/usb/hcd-ehci.c')
| -rw-r--r-- | hw/usb/hcd-ehci.c | 47 |
1 files changed, 36 insertions, 11 deletions
diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c index e759c996c..a511b4e83 100644 --- a/hw/usb/hcd-ehci.c +++ b/hw/usb/hcd-ehci.c @@ -348,6 +348,7 @@ struct EHCIQueue { QTAILQ_ENTRY(EHCIQueue) next; uint32_t seen; uint64_t ts; + int revalidate; /* cached data from guest - needs to be flushed * when guest removes an entry (doorbell, handshake sequence) @@ -695,7 +696,18 @@ 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; EHCIQueue *q, *tmp; @@ -706,7 +718,7 @@ 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 + 250000000) { + if (ehci->last_run_ns < q->ts + 250000000) { /* allow 0.25 sec idle */ continue; } @@ -1064,6 +1076,12 @@ static void ehci_mem_writel(void *ptr, target_phys_addr_t addr, uint32_t val) /* Do any register specific pre-write processing here. */ switch(addr) { case USBCMD: + if (val & USBCMD_HCRESET) { + ehci_reset(s); + val = s->usbcmd; + break; + } + if ((val & USBCMD_RUNSTOP) && !(s->usbcmd & USBCMD_RUNSTOP)) { qemu_mod_timer(s->frame_timer, qemu_get_clock_ns(vm_clock)); SET_LAST_RUN_CLOCK(s); @@ -1077,10 +1095,6 @@ static void ehci_mem_writel(void *ptr, target_phys_addr_t addr, uint32_t val) ehci_set_usbsts(s, USBSTS_HALT); } - if (val & USBCMD_HCRESET) { - ehci_reset(s); - val = s->usbcmd; - } /* not supporting dynamic frame list size at the moment */ if ((val & USBCMD_FLS) && !(s->usbcmd & USBCMD_FLS)) { @@ -1451,7 +1465,7 @@ static int ehci_process_itd(EHCIState *ehci, dev = ehci_find_device(ehci, devaddr); ep = usb_ep_get(dev, pid, endp); - if (ep->type == USB_ENDPOINT_XFER_ISOC) { + if (ep && ep->type == USB_ENDPOINT_XFER_ISOC) { usb_packet_setup(&ehci->ipacket, pid, ep); usb_packet_map(&ehci->ipacket, &ehci->isgl); ret = usb_handle_packet(dev, &ehci->ipacket); @@ -1519,7 +1533,7 @@ 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++) { @@ -1603,6 +1617,7 @@ static EHCIQueue *ehci_state_fetchqh(EHCIState *ehci, int async) { uint32_t entry; EHCIQueue *q; + EHCIqh qh; entry = ehci_get_fetch_addr(ehci, async); q = ehci_find_queue_by_qh(ehci, entry, async); @@ -1620,7 +1635,16 @@ 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, async); + q = ehci_alloc_queue(ehci, async); + q->seen++; + } + q->qh = qh; + q->revalidate = 0; ehci_trace_qh(q, NLPTR_GET(q->qhaddr), &q->qh); if (q->async == EHCI_ASYNC_INFLIGHT) { @@ -2045,7 +2069,7 @@ 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); @@ -2100,7 +2124,7 @@ 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: @@ -2300,6 +2324,7 @@ static int usb_ehci_initfn(PCIDevice *dev) s->frame_timer = qemu_new_timer_ns(vm_clock, ehci_frame_timer, s); QTAILQ_INIT(&s->aqueues); QTAILQ_INIT(&s->pqueues); + usb_packet_init(&s->ipacket); qemu_register_reset(ehci_reset, s); |