diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2010-12-01 11:47:40 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2011-01-11 17:01:02 +0100 |
| commit | 9159f6798ebfe0cdcfd1d1fb91c2c08b6d95954a (patch) | |
| tree | 3da4ec1dff19fe2866f5e11a860b68b7f5426926 /hw/usb-uhci.c | |
| parent | 01eacab6e95267fd894d0c1013aa5bf55c320dc8 (diff) | |
usb: uhci: remote wakeup support.
Add support for remote wakeup to the UHCI adapter.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/usb-uhci.c')
| -rw-r--r-- | hw/usb-uhci.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/hw/usb-uhci.c b/hw/usb-uhci.c index 5e2e34a51c..2d2a9e791d 100644 --- a/hw/usb-uhci.c +++ b/hw/usb-uhci.c @@ -57,13 +57,18 @@ #define TD_CTRL_NAK (1 << 19) #define TD_CTRL_TIMEOUT (1 << 18) +#define UHCI_PORT_SUSPEND (1 << 12) #define UHCI_PORT_RESET (1 << 9) #define UHCI_PORT_LSDA (1 << 8) +#define UHCI_PORT_RD (1 << 6) #define UHCI_PORT_ENC (1 << 3) #define UHCI_PORT_EN (1 << 2) #define UHCI_PORT_CSC (1 << 1) #define UHCI_PORT_CCS (1 << 0) +#define UHCI_PORT_READ_ONLY (0x1bb) +#define UHCI_PORT_WRITE_CLEAR (UHCI_PORT_CSC | UHCI_PORT_ENC) + #define FRAME_TIMER_FREQ 1000 #define FRAME_MAX_LOOPS 100 @@ -497,9 +502,10 @@ static void uhci_ioport_writew(void *opaque, uint32_t addr, uint32_t val) usb_send_msg(dev, USB_MSG_RESET); } } - port->ctrl = (port->ctrl & 0x01fb) | (val & ~0x01fb); + port->ctrl &= UHCI_PORT_READ_ONLY; + port->ctrl |= (val & ~UHCI_PORT_READ_ONLY); /* some bits are reset when a '1' is written to them */ - port->ctrl &= ~(val & 0x000a); + port->ctrl &= ~(val & UHCI_PORT_WRITE_CLEAR); } break; } @@ -629,6 +635,18 @@ static void uhci_detach(USBPort *port1) uhci_resume(s); } +static void uhci_wakeup(USBDevice *dev) +{ + USBBus *bus = usb_bus_from_device(dev); + UHCIState *s = container_of(bus, UHCIState, bus); + UHCIPort *port = s->ports + dev->port->index; + + if (port->ctrl & UHCI_PORT_SUSPEND && !(port->ctrl & UHCI_PORT_RD)) { + port->ctrl |= UHCI_PORT_RD; + uhci_resume(s); + } +} + static int uhci_broadcast_packet(UHCIState *s, USBPacket *p) { int i, ret; @@ -1094,6 +1112,7 @@ static void uhci_map(PCIDevice *pci_dev, int region_num, static USBPortOps uhci_port_ops = { .attach = uhci_attach, .detach = uhci_detach, + .wakeup = uhci_wakeup, }; static int usb_uhci_common_initfn(UHCIState *s) |