[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] Mouse not working on the console with the latest Windows Blue
Ping On Mon, 2013-08-19 at 13:19 +0100, Frediano Ziglio wrote: > Windows 8.1 (Blue) on initialization check if usb frame number increase > after 5 ms. It could happen however that timer function is not run in > that amount of time so Windows believe that usb controller is not working > properly. This patch prevent this detecting that timer function was not > run and run it. > > Signed-off-by: Frediano Ziglio <frediano.ziglio@xxxxxxxxxx> > --- > hw/usb-uhci.c | 19 +++++++++++++++---- > 1 file changed, 15 insertions(+), 4 deletions(-) > > diff --git a/hw/usb-uhci.c b/hw/usb-uhci.c > index d42d394..a255429 100644 > --- a/hw/usb-uhci.c > +++ b/hw/usb-uhci.c > @@ -129,6 +129,7 @@ typedef struct UHCIState { > uint32_t fl_base_addr; /* frame list base address */ > uint8_t sof_timing; > uint8_t status2; /* bit 0 and 1 are used to generate UHCI_STS_USBINT */ > + int64_t expire_time; > QEMUTimer *frame_timer; > UHCIPort ports[NB_PORTS]; > > @@ -166,6 +167,8 @@ static UHCIAsync *uhci_async_alloc(UHCIState *s) > return async; > } > > +static void uhci_frame_timer(void *opaque); > + > static void uhci_async_free(UHCIState *s, UHCIAsync *async) > { > qemu_free(async); > @@ -398,6 +401,8 @@ static int uhci_load(QEMUFile *f, void *opaque, int > version_id) > qemu_get_8s(f, &s->sof_timing); > qemu_get_8s(f, &s->status2); > qemu_get_timer(f, s->frame_timer); > + s->expire_time = qemu_get_clock(vm_clock) + > + (ticks_per_sec / FRAME_TIMER_FREQ); > > return 0; > } > @@ -441,8 +446,11 @@ static void uhci_ioport_writew(void *opaque, uint32_t > addr, uint32_t val) > switch(addr) { > case 0x00: > if ((val & UHCI_CMD_RS) && !(s->cmd & UHCI_CMD_RS)) { > + int64_t t_now = qemu_get_clock(vm_clock); > /* start frame processing */ > - qemu_mod_timer(s->frame_timer, qemu_get_clock(vm_clock)); > + s->expire_time = t_now + > + (ticks_per_sec / FRAME_TIMER_FREQ); > + qemu_mod_timer(s->frame_timer, t_now); > s->status &= ~UHCI_STS_HCHALTED; > } else if (!(val & UHCI_CMD_RS)) { > s->status |= UHCI_STS_HCHALTED; > @@ -528,6 +536,10 @@ static uint32_t uhci_ioport_readw(void *opaque, uint32_t > addr) > val = s->intr; > break; > case 0x06: > + /* keep frame number in sync */ > + if ((s->status & UHCI_STS_HCHALTED) == 0 && > + s->expire_time <= qemu_get_clock(vm_clock)) > + uhci_frame_timer(s); > val = s->frnum; > break; > case 0x10 ... 0x1f: > @@ -1020,7 +1032,6 @@ static void uhci_process_frame(UHCIState *s) > static void uhci_frame_timer(void *opaque) > { > UHCIState *s = opaque; > - int64_t expire_time; > > if (!(s->cmd & UHCI_CMD_RS)) { > /* Full stop */ > @@ -1051,9 +1062,9 @@ static void uhci_frame_timer(void *opaque) > uhci_async_validate_end(s); > > /* prepare the timer for the next frame */ > - expire_time = qemu_get_clock(vm_clock) + > + s->expire_time = qemu_get_clock(vm_clock) + > (ticks_per_sec / FRAME_TIMER_FREQ); > - qemu_mod_timer(s->frame_timer, expire_time); > + qemu_mod_timer(s->frame_timer, s->expire_time); > } > > static void uhci_map(PCIDevice *pci_dev, int region_num, _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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