hub.c
来自「EFI BIOS是Intel提出的下一代的BIOS标准。这里上传的Edk源代码是」· C语言 代码 · 共 508 行
C
508 行
/*++
Copyright (c) 2004, 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:
Hub.c
Abstract:
Usb Hub Request
Revision History
--*/
#include "usbbus.h"
EFI_STATUS
HubGetPortStatus (
IN EFI_USB_IO_PROTOCOL *UsbIo,
IN UINT8 Port,
OUT UINT32 *PortStatus
)
/*++
Routine Description:
Get a given hub port status
Arguments:
UsbIo - EFI_USB_IO_PROTOCOL instance
Port - Usb hub port number (starting from 1).
PortStatus - Current Hub port status and change status.
Returns:
EFI_SUCCESS
EFI_DEVICE
EFI_TIME_OUT
EFI_INVALID_PARAMETER
--*/
{
EFI_USB_DEVICE_REQUEST DevReq;
EFI_STATUS EfiStatus;
UINT32 UsbStatus;
UINT32 Timeout;
EfiZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
//
// Fill Device request packet
//
DevReq.RequestType = HUB_GET_PORT_STATUS_REQ_TYPE;
DevReq.Request = HUB_GET_PORT_STATUS;
DevReq.Value = 0;
DevReq.Index = Port;
DevReq.Length = sizeof (UINT32);
Timeout = 3000;
EfiStatus = UsbIo->UsbControlTransfer (
UsbIo,
&DevReq,
EfiUsbDataIn,
Timeout,
PortStatus,
sizeof (UINT32),
&UsbStatus
);
return EfiStatus;
}
EFI_STATUS
HubSetPortFeature (
IN EFI_USB_IO_PROTOCOL *UsbIo,
IN UINT8 Port,
IN UINT8 Value
)
/*++
Routine Description:
Set specified feature to a give hub port
Arguments:
UsbIo - EFI_USB_IO_PROTOCOL instance
Port - Usb hub port number (starting from 1).
Value - New feature value.
Returns:
EFI_SUCCESS
EFI_DEVICE
EFI_TIME_OUT
EFI_INVALID_PARAMETER
--*/
{
EFI_USB_DEVICE_REQUEST DevReq;
EFI_STATUS EfiStatus;
UINT32 UsbStatus;
UINT32 Timeout;
EfiZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
//
// Fill Device request packet
//
DevReq.RequestType = HUB_SET_PORT_FEATURE_REQ_TYPE;
DevReq.Request = HUB_SET_PORT_FEATURE;
DevReq.Value = Value;
DevReq.Index = Port;
DevReq.Length = 0;
Timeout = 3000;
EfiStatus = UsbIo->UsbControlTransfer (
UsbIo,
&DevReq,
EfiUsbNoData,
Timeout,
NULL,
0,
&UsbStatus
);
return EfiStatus;
}
EFI_STATUS
HubClearPortFeature (
IN EFI_USB_IO_PROTOCOL *UsbIo,
IN UINT8 Port,
IN UINT8 Value
)
/*++
Routine Description:
Clear a specified feature of a given hub port
Arguments:
UsbIo - EFI_USB_IO_PROTOCOL instance
Port - Usb hub port number (starting from 1).
Value - Feature value that will be cleared from
that hub port.
Returns:
EFI_SUCCESS
EFI_DEVICE
EFI_TIME_OUT
EFI_INVALID_PARAMETER
--*/
{
EFI_USB_DEVICE_REQUEST DevReq;
EFI_STATUS EfiStatus;
UINT32 UsbStatus;
UINT32 Timeout;
EfiZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
//
// Fill Device request packet
//
DevReq.RequestType = HUB_CLEAR_FEATURE_PORT_REQ_TYPE;
DevReq.Request = HUB_CLEAR_FEATURE_PORT;
DevReq.Value = Value;
DevReq.Index = Port;
DevReq.Length = 0;
Timeout = 3000;
EfiStatus = UsbIo->UsbControlTransfer (
UsbIo,
&DevReq,
EfiUsbNoData,
Timeout,
NULL,
0,
&UsbStatus
);
return EfiStatus;
}
EFI_STATUS
HubGetHubStatus (
IN EFI_USB_IO_PROTOCOL *UsbIo,
OUT UINT32 *HubStatus
)
/*++
Routine Description:
Get Hub Status
Arguments:
UsbIo - EFI_USB_IO_PROTOCOL instance
HubStatus - Current Hub status and change status.
Returns:
EFI_SUCCESS
EFI_DEVICE
EFI_TIME_OUT
--*/
{
EFI_USB_DEVICE_REQUEST DevReq;
EFI_STATUS EfiStatus;
UINT32 UsbStatus;
UINT32 Timeout;
EfiZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
//
// Fill Device request packet
//
DevReq.RequestType = HUB_GET_HUB_STATUS_REQ_TYPE;
DevReq.Request = HUB_GET_HUB_STATUS;
DevReq.Value = 0;
DevReq.Index = 0;
DevReq.Length = sizeof (UINT32);
Timeout = 3000;
EfiStatus = UsbIo->UsbControlTransfer (
UsbIo,
&DevReq,
EfiUsbDataIn,
Timeout,
HubStatus,
sizeof (UINT32),
&UsbStatus
);
return EfiStatus;
}
EFI_STATUS
HubSetHubFeature (
IN EFI_USB_IO_PROTOCOL *UsbIo,
IN UINT8 Value
)
/*++
Routine Description:
Set a specified feature to the hub
Arguments:
UsbIo - EFI_USB_IO_PROTOCOL instance
Value - Feature value that will be set to the hub.
Returns:
EFI_SUCCESS
EFI_DEVICE
EFI_TIME_OUT
--*/
{
EFI_USB_DEVICE_REQUEST DevReq;
EFI_STATUS EfiStatus;
UINT32 UsbStatus;
UINT32 Timeout;
EfiZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
//
// Fill Device request packet
//
DevReq.RequestType = HUB_SET_HUB_FEATURE_REQ_TYPE;
DevReq.Request = HUB_SET_HUB_FEATURE;
DevReq.Value = Value;
DevReq.Index = 0;
DevReq.Length = 0;
Timeout = 3000;
EfiStatus = UsbIo->UsbControlTransfer (
UsbIo,
&DevReq,
EfiUsbNoData,
Timeout,
NULL,
0,
&UsbStatus
);
return EfiStatus;
}
EFI_STATUS
HubClearHubFeature (
IN EFI_USB_IO_PROTOCOL *UsbIo,
IN UINT8 Value
)
/*++
Routine Description:
Set a specified feature to the hub
Arguments:
UsbIo - EFI_USB_IO_PROTOCOL instance
Value - Feature value that will be cleared from the hub.
Returns:
EFI_SUCCESS
EFI_DEVICE
EFI_TIME_OUT
--*/
{
EFI_USB_DEVICE_REQUEST DevReq;
EFI_STATUS EfiStatus;
UINT32 UsbStatus;
UINT32 Timeout;
EfiZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
//
// Fill Device request packet
//
DevReq.RequestType = HUB_CLEAR_FEATURE_REQ_TYPE;
DevReq.Request = HUB_CLEAR_FEATURE;
DevReq.Value = Value;
DevReq.Index = 0;
DevReq.Length = 0;
Timeout = 3000;
EfiStatus = UsbIo->UsbControlTransfer (
UsbIo,
&DevReq,
EfiUsbNoData,
Timeout,
NULL,
0,
&UsbStatus
);
return EfiStatus;
}
EFI_STATUS
GetHubDescriptor (
IN EFI_USB_IO_PROTOCOL *UsbIo,
IN UINTN DescriptorSize,
OUT EFI_USB_HUB_DESCRIPTOR *HubDescriptor
)
/*++
Routine Description:
Get the hub descriptor
Arguments:
UsbIo - EFI_USB_IO_PROTOCOL instance
DescriptorSize - The length of Hub Descriptor buffer.
HubDescriptor - Caller allocated buffer to store the hub descriptor
if successfully returned.
Returns:
EFI_SUCCESS
EFI_DEVICE
EFI_TIME_OUT
--*/
{
EFI_USB_DEVICE_REQUEST DevReq;
EFI_STATUS EfiStatus;
UINT32 UsbStatus;
UINT32 Timeout;
EfiZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
//
// Fill Device request packet
//
DevReq.RequestType = USB_RT_HUB | 0x80;
DevReq.Request = HUB_GET_DESCRIPTOR;
DevReq.Value = USB_DT_HUB << 8;
DevReq.Index = 0;
DevReq.Length = (UINT16) DescriptorSize;
Timeout = 3000;
EfiStatus = UsbIo->UsbControlTransfer (
UsbIo,
&DevReq,
EfiUsbDataIn,
Timeout,
HubDescriptor,
(UINT16) DescriptorSize,
&UsbStatus
);
return EfiStatus;
}
EFI_STATUS
DoHubConfig (
IN USB_IO_CONTROLLER_DEVICE *HubController
)
/*++
Routine Description:
Configure the hub
Arguments:
HubController - Indicating the hub controller device that
will be configured
Returns:
EFI_SUCCESS
EFI_DEVICE_ERROR
--*/
{
EFI_USB_IO_PROTOCOL *UsbIo;
EFI_USB_HUB_DESCRIPTOR HubDescriptor;
EFI_STATUS Status;
EFI_USB_HUB_STATUS HubStatus;
UINTN Index;
UINT32 PortStatus;
UsbIo = &HubController->UsbIo;
EfiZeroMem (&HubDescriptor, sizeof (HubDescriptor));
//
// First get the hub descriptor length
//
Status = GetHubDescriptor (UsbIo, 2, &HubDescriptor);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// First get the whole descriptor, then
// get the number of hub ports
//
Status = GetHubDescriptor (
UsbIo,
HubDescriptor.Length,
&HubDescriptor
);
if (EFI_ERROR (Status)) {
DEBUG ((gUSBErrorLevel, "Get hub descriptor fail\n"));
return EFI_DEVICE_ERROR;
}
HubController->DownstreamPorts = HubDescriptor.NbrPorts;
Status = HubGetHubStatus (UsbIo, (UINT32 *) &HubStatus);
if (EFI_ERROR (Status)) {
DEBUG ((gUSBErrorLevel, "Get hub status fail when configure\n"));
return EFI_DEVICE_ERROR;
}
//
// Get all hub ports status
//
for (Index = 0; Index < HubController->DownstreamPorts; Index++) {
Status = HubGetPortStatus (UsbIo, (UINT8) (Index + 1), &PortStatus);
if (EFI_ERROR (Status)) {
continue;
}
}
//
// Power all the hub ports
//
for (Index = 0; Index < HubController->DownstreamPorts; Index++) {
Status = HubSetPortFeature (
UsbIo,
(UINT8) (Index + 1),
EfiUsbPortPower
);
if (EFI_ERROR (Status)) {
continue;
}
}
//
// Clear Hub Status Change
//
Status = HubGetHubStatus (UsbIo, (UINT32 *) &HubStatus);
if (EFI_ERROR (Status)) {
DEBUG ((gUSBErrorLevel, "Get hub status fail\n"));
return EFI_DEVICE_ERROR;
} else {
//
// Hub power supply change happens
//
if (HubStatus.HubChange & HUB_CHANGE_LOCAL_POWER) {
HubClearHubFeature (UsbIo, C_HUB_LOCAL_POWER);
}
//
// Hub change overcurrent happens
//
if (HubStatus.HubChange & HUB_CHANGE_OVERCURRENT) {
HubClearHubFeature (UsbIo, C_HUB_OVER_CURRENT);
}
}
return EFI_SUCCESS;
}
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