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Sync USB modules with main trunk.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3423 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
vanjeff
2007-07-24 09:54:50 +00:00
parent d19862fe4f
commit 50fa1b3a86
6 changed files with 332 additions and 141 deletions
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85
MdeModulePkg/Bus/Usb/UsbBusDxe/UsbEnumer.c
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@@ -881,40 +881,71 @@ UsbEnumeratePort (
// connect/disconnect. Other three events are: ENABLE, SUSPEND, RESET.
// ENABLE/RESET is used to reset port. SUSPEND isn't supported.
//
Status = EFI_SUCCESS;
if (USB_BIT_IS_SET (PortState.PortChangeStatus, USB_PORT_STAT_C_OVERCURRENT)) {
if (USB_BIT_IS_SET (PortState.PortChangeStatus, USB_PORT_STAT_C_OVERCURRENT)) {
//
// If overcurrent condition is cleared, enable the port again
//
if (!USB_BIT_IS_SET (PortState.PortStatus, USB_PORT_STAT_OVERCURRENT)) {
HubApi->SetPortFeature (HubIf, Port, (EFI_USB_PORT_FEATURE) USB_HUB_PORT_POWER);
}
} else if (USB_BIT_IS_SET (PortState.PortChangeStatus, USB_PORT_STAT_C_CONNECTION)) {
//
// Device connected or disconnected. Either way, if there is
// already a device present in the bus, need to remove it.
//
Child = UsbFindChild (HubIf, Port);
if (Child != NULL) {
USB_DEBUG (("UsbEnumeratePort: device at port %d removed from system\n", Port));
UsbRemoveDevice (Child);
}
if (USB_BIT_IS_SET (PortState.PortStatus, USB_PORT_STAT_CONNECTION)) {
if (USB_BIT_IS_SET (PortState.PortStatus, USB_PORT_STAT_OVERCURRENT)) {
//
// Now, new device connected, enumerate and configure the device
// Both OverCurrent and OverCurrentChange set, means over current occurs,
// which probably is caused by short circuit. It has to wait system hardware
// to perform recovery.
//
USB_DEBUG (("UsbEnumeratePort: new device connected at port %d\n", Port));
Status = UsbEnumerateNewDev (HubIf, Port);
USB_DEBUG (("UsbEnumeratePort: Critical Over Current\n", Port));
return EFI_DEVICE_ERROR;
} else {
USB_DEBUG (("UsbEnumeratePort: device disconnected event on port %d\n", Port));
//
// Only OverCurrentChange set, means system has been recoveried from
// over current. As a result, all ports are nearly power-off, so
// it's necessary to detach and enumerate all ports again.
//
USB_DEBUG (("UsbEnumeratePort: 2.0 device Recovery Over Current\n", Port));
goto ON_ENUMERATE;
}
}
if (USB_BIT_IS_SET (PortState.PortChangeStatus, USB_PORT_STAT_C_ENABLE)) {
//
// 1.1 roothub port reg doesn't reflect over-current state, while its counterpart
// on 2.0 roothub does. When over-current has influence on 1.1 device, the port
// would be disabled, so it's also necessary to detach and enumerate again.
//
USB_DEBUG (("UsbEnumeratePort: 1.1 device Recovery Over Current\n", Port));
goto ON_ENUMERATE;
}
if (USB_BIT_IS_SET (PortState.PortChangeStatus, USB_PORT_STAT_C_CONNECTION)) {
//
// Device connected or disconnected normally.
//
goto ON_ENUMERATE;
}
ON_ENUMERATE:
//
// In case there is already a device on this port logically, it's safety to remove
// and enumerate again.
//
Child = UsbFindChild (HubIf, Port);
if (Child != NULL) {
USB_DEBUG (("UsbEnumeratePort: device at port %d removed from system\n", Port));
UsbRemoveDevice (Child);
}
if (USB_BIT_IS_SET (PortState.PortStatus, USB_PORT_STAT_CONNECTION)) {
//
// Now, new device connected, enumerate and configure the device
//
USB_DEBUG (("UsbEnumeratePort: new device connected at port %d\n", Port));
Status = UsbEnumerateNewDev (HubIf, Port);
} else {
USB_DEBUG (("UsbEnumeratePort: device disconnected event on port %d\n", Port));
}
HubApi->ClearPortChange (HubIf, Port);
return Status;
}