diff options
Diffstat (limited to 'MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h')
| -rw-r--r-- | MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h index ce041b9f79..14454da28a 100644 --- a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h +++ b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h @@ -247,6 +247,12 @@ struct _USB_BUS { EFI_USB_HC_PROTOCOL *UsbHc;
//
+ // Recorded the max supported usb devices.
+ // XHCI can support up to 255 devices.
+ // EHCI/UHCI/OHCI supports up to 127 devices.
+ //
+ UINT32 MaxDevices;
+ //
// An array of device that is on the bus. Devices[0] is
// for root hub. Device with address i is at Devices[i].
//
@@ -747,7 +753,6 @@ UsbBusControllerDriverStop ( IN EFI_HANDLE *ChildHandleBuffer
);
-extern UINT16 mMaxUsbDeviceNum;
extern EFI_USB_IO_PROTOCOL mUsbIoProtocol;
extern EFI_DRIVER_BINDING_PROTOCOL mUsbBusDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL mUsbBusComponentName;
|