diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2013-08-01 15:51:08 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2013-08-08 13:29:25 +0200 |
| commit | dad5b9ea0895c227bc9d48b7f0a6fa51eaaa8661 (patch) | |
| tree | 8c9a5feaff4647008bd0740ce8d9ace5aee8d0f0 /hw/usb | |
| parent | 6fdf98f281f85ae6e2883bed2f691bcfe33b1f9f (diff) | |
| download | qemu-dad5b9ea0895c227bc9d48b7f0a6fa51eaaa8661.zip qemu-dad5b9ea0895c227bc9d48b7f0a6fa51eaaa8661.tar.gz qemu-dad5b9ea0895c227bc9d48b7f0a6fa51eaaa8661.tar.bz2 | |
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>
Diffstat (limited to 'hw/usb')
| -rw-r--r-- | hw/usb/hcd-xhci.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c index ff5f681..58c88b8 100644 --- a/hw/usb/hcd-xhci.c +++ b/hw/usb/hcd-xhci.c @@ -2672,7 +2672,7 @@ static void xhci_port_update(XHCIPort *port, int is_detach) xhci_port_notify(port, PORTSC_CSC); } -static void xhci_port_reset(XHCIPort *port) +static void xhci_port_reset(XHCIPort *port, bool warm_reset) { trace_usb_xhci_port_reset(port->portnr); @@ -2683,6 +2683,11 @@ static void xhci_port_reset(XHCIPort *port) usb_device_reset(port->uport->dev); switch (port->uport->dev->speed) { + case USB_SPEED_SUPER: + if (warm_reset) { + port->portsc |= PORTSC_WRC; + } + /* fall through */ case USB_SPEED_LOW: case USB_SPEED_FULL: case USB_SPEED_HIGH: @@ -2845,8 +2850,12 @@ static void xhci_port_write(void *ptr, hwaddr reg, switch (reg) { case 0x00: /* PORTSC */ /* write-1-to-start bits */ + if (val & PORTSC_WPR) { + xhci_port_reset(port, true); + break; + } if (val & PORTSC_PR) { - xhci_port_reset(port); + xhci_port_reset(port, false); break; } |