mirror of https://github.com/proxmox/mirror_qemu
xhci: implement warm port reset
Without this patch windows can't do port resets for usb3 devices. https://bugzilla.redhat.com/show_bug.cgi?id=949514 Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>master
parent
6fdf98f281
commit
dad5b9ea08
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@ -2672,7 +2672,7 @@ static void xhci_port_update(XHCIPort *port, int is_detach)
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xhci_port_notify(port, PORTSC_CSC);
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xhci_port_notify(port, PORTSC_CSC);
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}
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}
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static void xhci_port_reset(XHCIPort *port)
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static void xhci_port_reset(XHCIPort *port, bool warm_reset)
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{
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{
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trace_usb_xhci_port_reset(port->portnr);
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trace_usb_xhci_port_reset(port->portnr);
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@ -2683,6 +2683,11 @@ static void xhci_port_reset(XHCIPort *port)
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usb_device_reset(port->uport->dev);
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usb_device_reset(port->uport->dev);
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switch (port->uport->dev->speed) {
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switch (port->uport->dev->speed) {
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case USB_SPEED_SUPER:
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if (warm_reset) {
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port->portsc |= PORTSC_WRC;
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}
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/* fall through */
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case USB_SPEED_LOW:
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case USB_SPEED_LOW:
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case USB_SPEED_FULL:
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case USB_SPEED_FULL:
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case USB_SPEED_HIGH:
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case USB_SPEED_HIGH:
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@ -2845,8 +2850,12 @@ static void xhci_port_write(void *ptr, hwaddr reg,
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switch (reg) {
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switch (reg) {
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case 0x00: /* PORTSC */
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case 0x00: /* PORTSC */
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/* write-1-to-start bits */
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/* write-1-to-start bits */
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if (val & PORTSC_WPR) {
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xhci_port_reset(port, true);
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break;
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}
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if (val & PORTSC_PR) {
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if (val & PORTSC_PR) {
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xhci_port_reset(port);
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xhci_port_reset(port, false);
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break;
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break;
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}
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}
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