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/** @file
Copyright (c) 2004 - 2007, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
UsbBus.h
Abstract:
Usb Bus Driver Binding and Bus IO Protocol
Revision History
**/
#ifndef _EFI_USB_BUS_H_
#define _EFI_USB_BUS_H_
#include <PiDxe.h>
#include <Protocol/Usb2HostController.h>
#include <Protocol/UsbHostController.h>
#include <Protocol/UsbIo.h>
#include <Protocol/DevicePath.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/DevicePathLib.h>
#include <Library/MemoryAllocationLib.h>
#include <IndustryStandard/Usb.h>
typedef struct _USB_DEVICE USB_DEVICE;
typedef struct _USB_INTERFACE USB_INTERFACE;
typedef struct _USB_BUS USB_BUS;
typedef struct _USB_HUB_API USB_HUB_API;
#include "UsbUtility.h"
#include "UsbDesc.h"
#include "UsbHub.h"
#include "UsbEnumer.h"
enum {
//
// Time definition
//
USB_STALL_1_MS = 1000,
TICKS_PER_MS = 10000U,
USB_ROOTHUB_POLL_INTERVAL = 1000 * TICKS_PER_MS,
USB_HUB_POLL_INTERVAL = 64,
//
// Maximum definition
//
USB_MAX_LANG_ID = 16,
USB_MAX_INTERFACE = 16,
USB_MAX_DEVICES = 128,
//
// Bus raises TPL to TPL_NOTIFY to serialize all its operations
// to protect shared data structures.
//
USB_BUS_TPL = TPL_NOTIFY,
USB_INTERFACE_SIGNATURE = EFI_SIGNATURE_32 ('U', 'S', 'B', 'I'),
USB_BUS_SIGNATURE = EFI_SIGNATURE_32 ('U', 'S', 'B', 'B')
};
#define USB_BIT(a) ((UINTN)(1 << (a)))
#define USB_BIT_IS_SET(Data, Bit) ((BOOLEAN)(((Data) & (Bit)) == (Bit)))
#define EFI_USB_BUS_PROTOCOL_GUID \
{0x2B2F68CC, 0x0CD2, 0x44cf, 0x8E, 0x8B, 0xBB, 0xA2, 0x0B, 0x1B, 0x5B, 0x75}
#define USB_INTERFACE_FROM_USBIO(a) \
CR(a, USB_INTERFACE, UsbIo, USB_INTERFACE_SIGNATURE)
#define USB_BUS_FROM_THIS(a) \
CR(a, USB_BUS, BusId, USB_BUS_SIGNATURE)
//
// Used to locate USB_BUS
//
typedef struct _EFI_USB_BUS_PROTOCOL {
UINT64 Reserved;
} EFI_USB_BUS_PROTOCOL;
//
// Stands for the real USB device. Each device may
// has several seperately working interfaces.
//
struct _USB_DEVICE {
USB_BUS *Bus;
//
// Configuration information
//
UINT8 Speed;
UINT8 Address;
UINT8 MaxPacket0;
//
// The device's descriptors and its configuration
//
USB_DEVICE_DESC *DevDesc;
USB_CONFIG_DESC *ActiveConfig;
UINT16 LangId [USB_MAX_LANG_ID];
UINT16 TotalLangId;
UINT8 NumOfInterface;
USB_INTERFACE *Interfaces [USB_MAX_INTERFACE];
//
// Parent child relationship
//
EFI_USB2_HC_TRANSACTION_TRANSLATOR Translator;
UINT8 ParentAddr;
USB_INTERFACE *ParentIf;
UINT8 ParentPort; // Start at 0
};
//
// Stands for different functions of USB device
//
struct _USB_INTERFACE {
UINTN Signature;
USB_DEVICE *Device;
USB_INTERFACE_DESC *IfDesc;
USB_INTERFACE_SETTING *IfSetting;
//
// Handles and protocols
//
EFI_HANDLE Handle;
EFI_USB_IO_PROTOCOL UsbIo;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
BOOLEAN IsManaged;
//
// Hub device special data
//
BOOLEAN IsHub;
USB_HUB_API *HubApi;
UINT8 NumOfPort;
EFI_EVENT HubNotify;
//
// Data used only by normal hub devices
//
USB_ENDPOINT_DESC *HubEp;
UINT8 *ChangeMap;
//
// Data used only by root hub to hand over device to
// companion UHCI driver if low/full speed devices are
// connected to EHCI.
//
UINT8 MaxSpeed;
};
//
// Stands for the current USB Bus
//
struct _USB_BUS {
UINTN Signature;
EFI_USB_BUS_PROTOCOL BusId;
//
// Managed USB host controller
//
EFI_HANDLE HostHandle;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_USB2_HC_PROTOCOL *Usb2Hc;
EFI_USB_HC_PROTOCOL *UsbHc;
//
// An array of device that is on the bus. Devices[0] is
// for root hub. Device with address i is at Devices[i].
//
USB_DEVICE *Devices[USB_MAX_DEVICES];
};
extern EFI_USB_IO_PROTOCOL mUsbIoProtocol;
extern EFI_DRIVER_BINDING_PROTOCOL mUsbBusDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL mUsbBusComponentName;
#endif
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