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/** @file
The definition for USB hub.
Copyright (c) 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.
**/
#ifndef _USB_HUB_H_
#define _USB_HUB_H_
#include <IndustryStandard/Usb.h>
#define USB_ENDPOINT_ADDR(EpAddr) ((EpAddr) & 0x7F)
#define USB_ENDPOINT_TYPE(Desc) ((Desc)->Attributes & USB_ENDPOINT_TYPE_MASK)
typedef enum {
USB_DESC_TYPE_HUB = 0x29,
//
// Hub class control transfer target
//
USB_HUB_TARGET_HUB = 0,
USB_HUB_TARGET_PORT = 3,
//
// HUB class specific contrl transfer request type
//
USB_HUB_REQ_GET_STATUS = 0,
USB_HUB_REQ_CLEAR_FEATURE = 1,
USB_HUB_REQ_SET_FEATURE = 3,
USB_HUB_REQ_GET_DESC = 6,
USB_HUB_REQ_SET_DESC = 7,
USB_HUB_REQ_CLEAR_TT = 8,
USB_HUB_REQ_RESET_TT = 9,
USB_HUB_REQ_GET_TT_STATE = 10,
USB_HUB_REQ_STOP_TT = 11,
//
// USB hub class feature selector
//
USB_HUB_C_HUB_LOCAL_POWER = 0,
USB_HUB_C_HUB_OVER_CURRENT = 1,
USB_HUB_PORT_CONNECTION = 0,
USB_HUB_PORT_ENABLE = 1,
USB_HUB_PORT_SUSPEND = 2,
USB_HUB_PORT_OVER_CURRENT = 3,
USB_HUB_PORT_RESET = 4,
USB_HUB_PORT_POWER = 8,
USB_HUB_PORT_LOW_SPEED = 9,
USB_HUB_C_PORT_CONNECT = 16,
USB_HUB_C_PORT_ENABLE = 17,
USB_HUB_C_PORT_SUSPEND = 18,
USB_HUB_C_PORT_OVER_CURRENT = 19,
USB_HUB_C_PORT_RESET = 20,
USB_HUB_PORT_TEST = 21,
USB_HUB_PORT_INDICATOR = 22,
//
// USB hub power control method. In gang power control
//
USB_HUB_GANG_POWER_CTRL = 0,
USB_HUB_PORT_POWER_CTRL = 0x01,
//
// USB hub status bits
//
USB_HUB_STAT_LOCAL_POWER = 0x01,
USB_HUB_STAT_OVER_CURRENT = 0x02,
USB_HUB_STAT_C_LOCAL_POWER = 0x01,
USB_HUB_STAT_C_OVER_CURRENT = 0x02,
USB_HUB_CLASS_CODE = 0x09,
USB_HUB_SUBCLASS_CODE = 0x00,
//
// Host software return timeout if port status doesn't change
// after 500ms(LOOP * STALL = 100 * 5ms), set by experience
//
USB_WAIT_PORT_STS_CHANGE_LOOP = 100
}USB_HUB_FLAGS_VALUE;
#pragma pack(1)
//
// Hub descriptor, the last two fields are of variable lenght.
//
typedef struct {
UINT8 Length;
UINT8 DescType;
UINT8 NumPorts;
UINT16 HubCharacter;
UINT8 PwrOn2PwrGood;
UINT8 HubContrCurrent;
UINT8 Filler[16];
} EFI_USB_HUB_DESCRIPTOR;
#pragma pack()
typedef struct {
UINT16 ChangedBit;
EFI_USB_PORT_FEATURE Feature;
} USB_CHANGE_FEATURE_MAP;
/**
Clear the transaction translate buffer if full/low
speed control/bulk transfer failed and the transfer
uses this hub as translator.Remember to clear the TT
buffer of transaction translator, not that of the
parent.
@param UsbDev The Usb device.
@param Port The port of the hub.
@param DevAddr Address of the failed transaction.
@param EpNum The endpoint number of the failed transaction.
@param EpType The type of failed transaction.
@retval EFI_SUCCESS The TT buffer is cleared.
@retval Others Failed to clear the TT buffer.
**/
EFI_STATUS
UsbHubCtrlClearTTBuffer (
IN USB_DEVICE *UsbDev,
IN UINT8 Port,
IN UINT16 DevAddr,
IN UINT16 EpNum,
IN UINT16 EpType
);
/**
Test whether the interface is a hub interface.
@param UsbIf The interface to test.
@retval TRUE The interface is a hub interface.
@retval FALSE The interface isn't a hub interface.
**/
BOOLEAN
UsbIsHubInterface (
IN USB_INTERFACE *UsbIf
);
/**
Ack the hub change bits. If these bits are not ACKed, Hub will
always return changed bit map from its interrupt endpoint.
@param UsbDev The Usb device.
@retval EFI_SUCCESS The hub change status is ACKed.
@retval Others Failed to ACK the hub status.
**/
EFI_STATUS
UsbHubAckHubStatus (
IN USB_DEVICE *UsbDev
);
extern USB_HUB_API mUsbHubApi;
extern USB_HUB_API mUsbRootHubApi;
#endif
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