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ehci: implement port wakeup

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Update portsc register and raise irq in case a suspended
port is woken up, so remote wakeup works on our ehci ports.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2013-11-20 14:10:19 +01:00
parent 72391da506
commit e489df40ca
2 changed files with 19 additions and 2 deletions
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18
hw/usb/hcd-ehci.c
View file

@ -826,9 +826,9 @@ static void ehci_child_detach(USBPort *port, USBDevice *child)
static void ehci_wakeup(USBPort *port)
{
EHCIState *s = port->opaque;
uint32_t portsc = s->portsc[port->index];
uint32_t *portsc = &s->portsc[port->index];
if (portsc & PORTSC_POWNER) {
if (*portsc & PORTSC_POWNER) {
USBPort *companion = s->companion_ports[port->index];
if (companion->ops->wakeup) {
companion->ops->wakeup(companion);
@ -836,6 +836,12 @@ static void ehci_wakeup(USBPort *port)
return;
}
if (*portsc & PORTSC_SUSPEND) {
trace_usb_ehci_port_wakeup(port->index);
*portsc |= PORTSC_FPRES;
ehci_raise_irq(s, USBSTS_PCD);
}
qemu_bh_schedule(s->async_bh);
}
@ -1067,6 +1073,14 @@ static void ehci_port_write(void *ptr, hwaddr addr,
}
}
if ((val & PORTSC_SUSPEND) && !(*portsc & PORTSC_SUSPEND)) {
trace_usb_ehci_port_suspend(port);
}
if (!(val & PORTSC_FPRES) && (*portsc & PORTSC_FPRES)) {
trace_usb_ehci_port_resume(port);
val &= ~PORTSC_SUSPEND;
}
*portsc &= ~PORTSC_RO_MASK;
*portsc |= val;
trace_usb_ehci_portsc_change(addr + s->portscbase, addr >> 2, *portsc, old);