diff options
| author | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-07-11 08:47:37 +0000 |
|---|---|---|
| committer | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-07-11 08:47:37 +0000 |
| commit | e237e7ae9fc23f32a25040d49cc9a16f2a7f3b4c (patch) | |
| tree | f7c7ea55cac3b9816f5f6f2a39fbc09406e7a134 /MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c | |
| parent | f183b4f349e207768bfbf3287b9d37ac7b16d101 (diff) | |
| download | edk2-platforms-e237e7ae9fc23f32a25040d49cc9a16f2a7f3b4c.tar.xz | |
Import Usb/UsbBusDxe and Usb/UsbMassStorageDxe into MdeModulePkg.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3193 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c')
| -rw-r--r-- | MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c | 991 |
1 files changed, 991 insertions, 0 deletions
diff --git a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c new file mode 100644 index 0000000000..ffed1493c6 --- /dev/null +++ b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbDesc.c @@ -0,0 +1,991 @@ +/** @file
+
+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.
+
+ Module Name:
+
+ UsbDesc.c
+
+ Abstract:
+
+ Manage Usb Descriptor List
+
+ Revision History
+
+
+**/
+
+#include "UsbBus.h"
+
+
+/**
+ Free the interface setting descriptor
+
+ @param Setting The descriptor to free
+
+ @return None
+
+**/
+STATIC
+VOID
+UsbFreeInterfaceDesc (
+ IN USB_INTERFACE_SETTING *Setting
+ )
+{
+ USB_ENDPOINT_DESC *Ep;
+ UINTN Index;
+
+ if (Setting->Endpoints != NULL) {
+ //
+ // Each interface setting may have several endpoints, free them first.
+ //
+ for (Index = 0; Index < Setting->Desc.NumEndpoints; Index++) {
+ Ep = Setting->Endpoints[Index];
+
+ if (Ep != NULL) {
+ gBS->FreePool (Ep);
+ }
+ }
+
+ gBS->FreePool (Setting->Endpoints);
+ }
+
+ gBS->FreePool (Setting);
+}
+
+
+
+/**
+ Free a configuration descriptor with its interface
+ descriptors. It may be initialized partially
+
+ @param Config The configuration descriptor to free
+
+ @return None
+
+**/
+STATIC
+VOID
+UsbFreeConfigDesc (
+ IN USB_CONFIG_DESC *Config
+ )
+{
+ USB_INTERFACE_DESC *Interface;
+ UINTN Index;
+ UINTN SetIndex;
+
+ if (Config->Interfaces != NULL) {
+ //
+ // A configuration may have several interfaces, free the interface
+ //
+ for (Index = 0; Index < Config->Desc.NumInterfaces; Index++) {
+ Interface = Config->Interfaces[Index];
+
+ if (Interface == NULL) {
+ continue;
+ }
+
+ //
+ // Each interface may have several settings, free the settings
+ //
+ for (SetIndex = 0; SetIndex < Interface->NumOfSetting; SetIndex++) {
+ if (Interface->Settings[SetIndex] != NULL) {
+ UsbFreeInterfaceDesc (Interface->Settings[SetIndex]);
+ }
+ }
+
+ gBS->FreePool (Interface);
+ }
+
+ gBS->FreePool (Config->Interfaces);
+ }
+
+ gBS->FreePool (Config);
+
+}
+
+
+
+/**
+ Free a device descriptor with its configurations
+
+ @param DevDesc The device descriptor
+
+ @return None
+
+**/
+VOID
+UsbFreeDevDesc (
+ IN USB_DEVICE_DESC *DevDesc
+ )
+{
+ UINTN Index;
+
+ if (DevDesc->Configs != NULL) {
+ for (Index = 0; Index < DevDesc->Desc.NumConfigurations; Index++) {
+ if (DevDesc->Configs[Index] != NULL) {
+ UsbFreeConfigDesc (DevDesc->Configs[Index]);
+ }
+ }
+
+ gBS->FreePool (DevDesc->Configs);
+ }
+
+ gBS->FreePool (DevDesc);
+}
+
+
+/**
+ Create a descriptor
+
+ @param DescBuf The buffer of raw descriptor
+ @param Len The lenght of the raw descriptor buffer
+ @param Type The type of descriptor to create
+ @param Consumed Number of bytes consumed
+
+ @return Created descriptor or NULL
+
+**/
+STATIC
+VOID *
+UsbCreateDesc (
+ IN UINT8 *DescBuf,
+ IN INTN Len,
+ IN UINT8 Type,
+ OUT INTN *Consumed
+ )
+{
+ USB_DESC_HEAD *Head;
+ INTN DescLen;
+ INTN CtrlLen;
+ INTN Offset;
+ VOID *Desc;
+
+ DescLen = 0;
+ CtrlLen = 0;
+ *Consumed = 0;
+
+ switch (Type) {
+ case USB_DESC_TYPE_DEVICE:
+ DescLen = sizeof (EFI_USB_DEVICE_DESCRIPTOR);
+ CtrlLen = sizeof (USB_DEVICE_DESC);
+ break;
+
+ case USB_DESC_TYPE_CONFIG:
+ DescLen = sizeof (EFI_USB_CONFIG_DESCRIPTOR);
+ CtrlLen = sizeof (USB_CONFIG_DESC);
+ break;
+
+ case USB_DESC_TYPE_INTERFACE:
+ DescLen = sizeof (EFI_USB_INTERFACE_DESCRIPTOR);
+ CtrlLen = sizeof (USB_INTERFACE_SETTING);
+ break;
+
+ case USB_DESC_TYPE_ENDPOINT:
+ DescLen = sizeof (EFI_USB_ENDPOINT_DESCRIPTOR);
+ CtrlLen = sizeof (USB_ENDPOINT_DESC);
+ break;
+ }
+
+ //
+ // All the descriptor has a common LTV (Length, Type, Value)
+ // format. Skip the descriptor that isn't of this Type
+ //
+ Offset = 0;
+ Head = (USB_DESC_HEAD*)DescBuf;
+
+ while ((Offset < Len) && (Head->Type != Type)) {
+ Offset += Head->Len;
+ Head = (USB_DESC_HEAD*)(DescBuf + Offset);
+ }
+
+ if ((Len <= Offset) || (Len < Offset + DescLen) ||
+ (Head->Type != Type) || (Head->Len != DescLen)) {
+ USB_ERROR (("UsbCreateDesc: met mal-format descriptor\n"));
+ return NULL;
+ }
+
+ Desc = AllocateZeroPool (CtrlLen);
+
+ if (Desc == NULL) {
+ return NULL;
+ }
+
+ CopyMem (Desc, Head, DescLen);
+ *Consumed = Offset + Head->Len;
+
+ return Desc;
+}
+
+
+/**
+ Parse an interface desciptor and its endpoints
+
+ @param DescBuf The buffer of raw descriptor
+ @param Len The lenght of the raw descriptor buffer
+ @param Consumed The number of raw descriptor consumed
+
+ @return The create interface setting or NULL if failed
+
+**/
+STATIC
+USB_INTERFACE_SETTING *
+UsbParseInterfaceDesc (
+ IN UINT8 *DescBuf,
+ IN INTN Len,
+ OUT INTN *Consumed
+ )
+{
+ USB_INTERFACE_SETTING *Setting;
+ USB_ENDPOINT_DESC *Ep;
+ UINTN Index;
+ UINTN NumEp;
+ INTN Used;
+ INTN Offset;
+
+ *Consumed = 0;
+ Setting = UsbCreateDesc (DescBuf, Len, USB_DESC_TYPE_INTERFACE, &Used);
+
+ if (Setting == NULL) {
+ USB_ERROR (("UsbParseInterfaceDesc: failed to create interface descriptor\n"));
+ return NULL;
+ }
+
+ Offset = Used;
+
+ //
+ // Create an arry to hold the interface's endpoints
+ //
+ NumEp = Setting->Desc.NumEndpoints;
+
+ USB_DEBUG (("UsbParseInterfaceDesc: interface %d(setting %d) has %d endpoints\n",
+ Setting->Desc.InterfaceNumber, Setting->Desc.AlternateSetting, NumEp));
+
+ if (NumEp == 0) {
+ goto ON_EXIT;
+ }
+
+ Setting->Endpoints = AllocateZeroPool (sizeof (USB_ENDPOINT_DESC *) * NumEp);
+
+ if (Setting->Endpoints == NULL) {
+ goto ON_ERROR;
+ }
+
+ //
+ // Create the endpoints for this interface
+ //
+ for (Index = 0; Index < NumEp; Index++) {
+ Ep = UsbCreateDesc (DescBuf + Offset, Len - Offset, USB_DESC_TYPE_ENDPOINT, &Used);
+
+ if (Ep == NULL) {
+ USB_ERROR (("UsbParseInterfaceDesc: failed to create endpoint(index %d)\n", Index));
+ goto ON_ERROR;
+ }
+
+ Setting->Endpoints[Index] = Ep;
+ Offset += Used;
+ }
+
+
+ON_EXIT:
+ *Consumed = Offset;
+ return Setting;
+
+ON_ERROR:
+ UsbFreeInterfaceDesc (Setting);
+ return NULL;
+}
+
+
+/**
+ Parse the configuration descriptor and its interfaces.
+
+ @param DescBuf The buffer of raw descriptor
+ @param Len The lenght of the raw descriptor buffer
+
+ @return The created configuration descriptor
+
+**/
+STATIC
+USB_CONFIG_DESC *
+UsbParseConfigDesc (
+ IN UINT8 *DescBuf,
+ IN INTN Len
+ )
+{
+ USB_CONFIG_DESC *Config;
+ USB_INTERFACE_SETTING *Setting;
+ USB_INTERFACE_DESC *Interface;
+ UINTN Index;
+ UINTN NumIf;
+ INTN Consumed;
+
+ ASSERT (DescBuf != NULL);
+
+ Config = UsbCreateDesc (DescBuf, Len, USB_DESC_TYPE_CONFIG, &Consumed);
+
+ if (Config == NULL) {
+ return NULL;
+ }
+
+ //
+ // Initialize an array of setting for the configuration's interfaces.
+ //
+ NumIf = Config->Desc.NumInterfaces;
+ Config->Interfaces = AllocateZeroPool (sizeof (USB_INTERFACE_DESC *) * NumIf);
+
+ if (Config->Interfaces == NULL) {
+ goto ON_ERROR;
+ }
+
+ USB_DEBUG (("UsbParseConfigDesc: config %d has %d interfaces\n",
+ Config->Desc.ConfigurationValue, NumIf));
+
+ for (Index = 0; Index < NumIf; Index++) {
+ Interface = AllocateZeroPool (sizeof (USB_INTERFACE_DESC));
+
+ if (Interface == NULL) {
+ goto ON_ERROR;
+ }
+
+ Config->Interfaces[Index] = Interface;
+ }
+
+ //
+ // If a configuration has several interfaces, these interfaces are
+ // numbered from zero to n. If a interface has several settings,
+ // these settings are also number from zero to m. The interface
+ // setting must be organized as |interface 0, setting 0|interface 0
+ // setting 1|interface 1, setting 0|interface 2, setting 0|. Check
+ // USB2.0 spec, page 267.
+ //
+ DescBuf += Consumed;
+ Len -= Consumed;
+
+ while (Len > 0) {
+ Setting = UsbParseInterfaceDesc (DescBuf, Len, &Consumed);
+
+ if ((Setting == NULL)) {
+ USB_ERROR (("UsbParseConfigDesc: failed to parse interface setting\n"));
+ goto ON_ERROR;
+
+ } else if (Setting->Desc.InterfaceNumber >= NumIf) {
+ USB_ERROR (("UsbParseConfigDesc: mal-formated interface descriptor\n"));
+
+ UsbFreeInterfaceDesc (Setting);
+ goto ON_ERROR;
+ }
+
+ //
+ // Insert the descriptor to the corresponding set.
+ //
+ Interface = Config->Interfaces[Setting->Desc.InterfaceNumber];
+
+ if (Interface->NumOfSetting >= USB_MAX_INTERFACE_SETTING) {
+ goto ON_ERROR;
+ }
+
+ Interface->Settings[Interface->NumOfSetting] = Setting;
+ Interface->NumOfSetting++;
+
+ DescBuf += Consumed;
+ Len -= Consumed;
+ }
+
+ return Config;
+
+ON_ERROR:
+ UsbFreeConfigDesc (Config);
+ return NULL;
+}
+
+
+
+/**
+ USB standard control transfer support routine. This
+ function is used by USB device. It is possible that
+ the device's interfaces are still waiting to be
+ enumerated.
+
+ @param UsbDev The usb device
+ @param Direction The direction of data transfer
+ @param Type Standard / class specific / vendor specific
+ @param Target The receiving target
+ @param Request Which request
+ @param Value The wValue parameter of the request
+ @param Index The wIndex parameter of the request
+ @param Buf The buffer to receive data into / transmit from
+ @param Length The length of the buffer
+
+ @retval EFI_SUCCESS The control request is executed
+ @retval EFI_DEVICE_ERROR Failed to execute the control transfer
+
+**/
+EFI_STATUS
+UsbCtrlRequest (
+ IN USB_DEVICE *UsbDev,
+ IN EFI_USB_DATA_DIRECTION Direction,
+ IN UINTN Type,
+ IN UINTN Target,
+ IN UINTN Request,
+ IN UINT16 Value,
+ IN UINT16 Index,
+ IN OUT VOID *Buf,
+ IN UINTN Length
+ )
+{
+ EFI_USB_DEVICE_REQUEST DevReq;
+ EFI_STATUS Status;
+ UINT32 Result;
+ UINTN Len;
+
+ ASSERT ((UsbDev != NULL) && (UsbDev->Bus != NULL));
+
+ DevReq.RequestType = USB_REQUEST_TYPE (Direction, Type, Target);
+ DevReq.Request = (UINT8) Request;
+ DevReq.Value = Value;
+ DevReq.Index = Index;
+ DevReq.Length = (UINT16) Length;
+
+ Len = Length;
+ Status = UsbHcControlTransfer (
+ UsbDev->Bus,
+ UsbDev->Address,
+ UsbDev->Speed,
+ UsbDev->MaxPacket0,
+ &DevReq,
+ Direction,
+ Buf,
+ &Len,
+ 50 * USB_STALL_1_MS,
+ &UsbDev->Translator,
+ &Result
+ );
+
+ return Status;
+}
+
+
+
+/**
+ Get the standard descriptors.
+
+ @param UsbDev The USB device to read descriptor from
+ @param DescType The type of descriptor to read
+ @param DescIndex The index of descriptor to read
+ @param LangId Language ID, only used to get string, otherwise set
+ it to 0
+ @param Buf The buffer to hold the descriptor read
+ @param Length The length of the buffer
+
+ @retval EFI_SUCCESS The descriptor is read OK
+ @retval Others Failed to retrieve the descriptor
+
+**/
+STATIC
+EFI_STATUS
+UsbCtrlGetDesc (
+ IN USB_DEVICE *UsbDev,
+ IN UINTN DescType,
+ IN UINTN DescIndex,
+ IN UINT16 LangId,
+ OUT VOID *Buf,
+ IN UINTN Length
+ )
+{
+ EFI_STATUS Status;
+
+ Status = UsbCtrlRequest (
+ UsbDev,
+ EfiUsbDataIn,
+ USB_REQ_TYPE_STANDARD,
+ USB_TARGET_DEVICE,
+ USB_REQ_GET_DESCRIPTOR,
+ (UINT16) ((DescType << 8) | DescIndex),
+ LangId,
+ Buf,
+ Length
+ );
+
+ return Status;
+}
+
+
+
+/**
+ Return the max packet size for endpoint zero. This function
+ is the first function called to get descriptors during bus
+ enumeration.
+
+ @param UsbDev The usb device
+
+ @retval EFI_SUCCESS The max packet size of endpoint zero is retrieved
+ @retval EFI_DEVICE_ERROR Failed to retrieve it
+
+**/
+EFI_STATUS
+UsbGetMaxPacketSize0 (
+ IN USB_DEVICE *UsbDev
+ )
+{
+ EFI_USB_DEVICE_DESCRIPTOR DevDesc;
+ EFI_STATUS Status;
+ UINTN Index;
+
+
+ //
+ // Get the first 8 bytes of the device descriptor which contains
+ // max packet size for endpoint 0, which is at least 8.
+ //
+ UsbDev->MaxPacket0 = 8;
+
+ for (Index = 0; Index < 3; Index++) {
+ Status = UsbCtrlGetDesc (UsbDev, USB_DESC_TYPE_DEVICE, 0, 0, &DevDesc, 8);
+
+ if (!EFI_ERROR (Status)) {
+ UsbDev->MaxPacket0 = DevDesc.MaxPacketSize0;
+ return EFI_SUCCESS;
+ }
+
+ gBS->Stall (100 * USB_STALL_1_MS);
+ }
+
+ return EFI_DEVICE_ERROR;
+}
+
+
+
+/**
+ Get the device descriptor for the device.
+
+ @param UsbDev The Usb device to retrieve descriptor from
+
+ @retval EFI_SUCCESS The device descriptor is returned
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory
+
+**/
+STATIC
+EFI_STATUS
+UsbGetDevDesc (
+ IN USB_DEVICE *UsbDev
+ )
+{
+ USB_DEVICE_DESC *DevDesc;
+ EFI_STATUS Status;
+
+ DevDesc = AllocateZeroPool (sizeof (USB_DEVICE_DESC));
+
+ if (DevDesc == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Status = UsbCtrlGetDesc (
+ UsbDev,
+ USB_DESC_TYPE_DEVICE,
+ 0,
+ 0,
+ DevDesc,
+ sizeof (EFI_USB_DEVICE_DESCRIPTOR)
+ );
+
+ if (EFI_ERROR (Status)) {
+ gBS->FreePool (DevDesc);
+ } else {
+ UsbDev->DevDesc = DevDesc;
+ }
+
+ return Status;
+}
+
+
+
+/**
+ Retrieve the indexed string for the language. It requires two
+ steps to get a string, first to get the string's length. Then
+ the string itself.
+
+ @param UsbDev The usb device
+ @param Index The index the string to retrieve
+ @param LangId Language ID
+
+ @return The created string descriptor or NULL
+
+**/
+EFI_USB_STRING_DESCRIPTOR *
+UsbGetOneString (
+ IN USB_DEVICE *UsbDev,
+ IN UINT8 Index,
+ IN UINT16 LangId
+ )
+{
+ EFI_USB_STRING_DESCRIPTOR Desc;
+ EFI_STATUS Status;
+ UINT8 *Buf;
+
+ //
+ // First get two bytes which contains the string length.
+ //
+ Status = UsbCtrlGetDesc (UsbDev, USB_DESC_TYPE_STRING, Index, LangId, &Desc, 2);
+
+ if (EFI_ERROR (Status)) {
+ return NULL;
+ }
+
+ Buf = AllocateZeroPool (Desc.Length);
+
+ if (Buf == NULL) {
+ return NULL;
+ }
+
+ Status = UsbCtrlGetDesc (
+ UsbDev,
+ USB_DESC_TYPE_STRING,
+ Index,
+ LangId,
+ Buf,
+ Desc.Length
+ );
+
+ if (EFI_ERROR (Status)) {
+ gBS->FreePool (Buf);
+ return NULL;
+ }
+
+ return (EFI_USB_STRING_DESCRIPTOR *) Buf;
+}
+
+
+
+/**
+ Build the language ID table for string descriptors
+
+ @param UsbDev The Usb device
+
+ @retval EFI_UNSUPPORTED This device doesn't support string table
+
+**/
+STATIC
+EFI_STATUS
+UsbBuildLangTable (
+ IN USB_DEVICE *UsbDev
+ )
+{
+ EFI_USB_STRING_DESCRIPTOR *Desc;
+ EFI_STATUS Status;
+ UINTN Index;
+ UINTN Max;
+ UINT16 *Point;
+
+ //
+ // The string of language ID zero returns the supported languages
+ //
+ Desc = UsbGetOneString (UsbDev, 0, 0);
+
+ if (Desc == NULL) {
+ return EFI_UNSUPPORTED;
+ }
+
+ if (Desc->Length < 4) {
+ Status = EFI_UNSUPPORTED;
+ goto ON_EXIT;
+ }
+
+ Status = EFI_SUCCESS;
+
+ Max = (Desc->Length - 2) / 2;
+ Max = (Max < USB_MAX_LANG_ID ? Max : USB_MAX_LANG_ID);
+
+ Point = Desc->String;
+ for (Index = 0; Index < Max; Index++) {
+ UsbDev->LangId[Index] = *Point;
+ Point++;
+ }
+
+ UsbDev->TotalLangId = (UINT16)Max;
+
+ON_EXIT:
+ gBS->FreePool (Desc);
+ return Status;
+}
+
+
+
+/**
+ Retrieve the indexed configure for the device. USB device
+ returns the configuration togetther with the interfaces for
+ this configuration. Configuration descriptor is also of
+ variable length
+
+ @param UsbDev The Usb interface
+ @param Index The index of the configuration
+
+ @return The created configuration descriptor
+
+**/
+STATIC
+EFI_USB_CONFIG_DESCRIPTOR *
+UsbGetOneConfig (
+ IN USB_DEVICE *UsbDev,
+ IN UINT8 Index
+ )
+{
+ EFI_USB_CONFIG_DESCRIPTOR Desc;
+ EFI_STATUS Status;
+ VOID *Buf;
+
+ //
+ // First get four bytes which contains the total length
+ // for this configuration.
+ //
+ Status = UsbCtrlGetDesc (UsbDev, USB_DESC_TYPE_CONFIG, Index, 0, &Desc, 8);
+
+ if (EFI_ERROR (Status)) {
+ USB_ERROR (("UsbGetOneConfig: failed to get descript length(%d) %r\n",
+ Status, Desc.TotalLength));
+
+ return NULL;
+ }
+
+ USB_DEBUG (("UsbGetOneConfig: total length is %d\n", Desc.TotalLength));
+
+ Buf = AllocateZeroPool (Desc.TotalLength);
+
+ if (Buf == NULL) {
+ return NULL;
+ }
+
+ Status = UsbCtrlGetDesc (UsbDev, USB_DESC_TYPE_CONFIG, Index, 0, Buf, Desc.TotalLength);
+
+ if (EFI_ERROR (Status)) {
+ USB_ERROR (("UsbGetOneConfig: failed to get full descript %r\n", Status));
+
+ gBS->FreePool (Buf);
+ return NULL;
+ }
+
+ return Buf;
+}
+
+
+
+/**
+ Build the whole array of descriptors. This function must
+ be called after UsbGetMaxPacketSize0 returns the max packet
+ size correctly for endpoint 0.
+
+ @param UsbDev The Usb device
+
+ @retval EFI_SUCCESS The descriptor table is build
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate resource for the descriptor
+
+**/
+EFI_STATUS
+UsbBuildDescTable (
+ IN USB_DEVICE *UsbDev
+ )
+{
+ EFI_USB_CONFIG_DESCRIPTOR *Config;
+ USB_DEVICE_DESC *DevDesc;
+ USB_CONFIG_DESC *ConfigDesc;
+ UINT8 NumConfig;
+ EFI_STATUS Status;
+ UINT8 Index;
+
+ //
+ // Get the device descriptor, then allocate the configure
+ // descriptor pointer array to hold configurations.
+ //
+ Status = UsbGetDevDesc (UsbDev);
+
+ if (EFI_ERROR (Status)) {
+ USB_ERROR (("UsbBuildDescTable: failed to get device descriptor - %r\n", Status));
+ return Status;
+ }
+
+ DevDesc = UsbDev->DevDesc;
+ NumConfig = DevDesc->Desc.NumConfigurations;
+ DevDesc->Configs = AllocateZeroPool (NumConfig * sizeof (USB_CONFIG_DESC *));
+
+ if (DevDesc->Configs == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ USB_DEBUG (("UsbBuildDescTable: device has %d configures\n", NumConfig));
+
+ //
+ // Read each configurations, then parse them
+ //
+ for (Index = 0; Index < NumConfig; Index++) {
+ Config = UsbGetOneConfig (UsbDev, Index);
+
+ if (Config == NULL) {
+ USB_ERROR (("UsbBuildDescTable: failed to get configure (index %d)\n", Index));
+
+ //
+ // If we can get the default descriptor, it is likely that the
+ // device is still operational.
+ //
+ if (Index == 0) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ break;
+ }
+
+ ConfigDesc = UsbParseConfigDesc ((UINT8 *) Config, Config->TotalLength);
+
+ gBS->FreePool (Config);
+
+ if (ConfigDesc == NULL) {
+ USB_ERROR (("UsbBuildDescTable: failed to parse configure (index %d)\n", Index));
+
+ //
+ // If we can get the default descriptor, it is likely that the
+ // device is still operational.
+ //
+ if (Index == 0) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ break;
+ }
+
+ DevDesc->Configs[Index] = ConfigDesc;
+ }
+
+ //
+ // Don't return error even this function failed because
+ // it is possible for the device to not support strings.
+ //
+ Status = UsbBuildLangTable (UsbDev);
+
+ if (EFI_ERROR (Status)) {
+ USB_DEBUG (("UsbBuildDescTable: get language ID table %r\n", Status));
+ }
+
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Set the device's address.
+
+ @param UsbDev The device to set address to
+ @param Address The address to set
+
+ @retval EFI_SUCCESS The device is set to the address
+ @retval Others Failed to set the device address
+
+**/
+EFI_STATUS
+UsbSetAddress (
+ IN USB_DEVICE *UsbDev,
+ IN UINT8 Address
+ )
+{
+ EFI_STATUS Status;
+
+ Status = UsbCtrlRequest (
+ UsbDev,
+ EfiUsbNoData,
+ USB_REQ_TYPE_STANDARD,
+ USB_TARGET_DEVICE,
+ USB_REQ_SET_ADDRESS,
+ Address,
+ 0,
+ NULL,
+ 0
+ );
+
+ return Status;
+}
+
+
+/**
+ Set the device's configuration. This function changes
+ the device's internal state. UsbSelectConfig changes
+ the Usb bus's internal state.
+
+ @param UsbDev The USB device to set configure to
+ @param ConfigIndex The configure index to set
+
+ @retval EFI_SUCCESS The device is configured now
+ @retval Others Failed to set the device configure
+
+**/
+EFI_STATUS
+UsbSetConfig (
+ IN USB_DEVICE *UsbDev,
+ IN UINT8 ConfigIndex
+ )
+{
+ EFI_STATUS Status;
+
+ Status = UsbCtrlRequest (
+ UsbDev,
+ EfiUsbNoData,
+ USB_REQ_TYPE_STANDARD,
+ USB_TARGET_DEVICE,
+ USB_REQ_SET_CONFIG,
+ ConfigIndex,
+ 0,
+ NULL,
+ 0
+ );
+
+ return Status;
+}
+
+
+
+/**
+ Usb UsbIo interface to clear the feature. This is should
+ only be used by HUB which is considered a device driver
+ on top of the UsbIo interface.
+
+ @param UsbIo The UsbIo interface
+ @param Target The target of the transfer: endpoint/device
+ @param Feature The feature to clear
+ @param Index The wIndex parameter
+
+ @retval EFI_SUCCESS The device feature is cleared
+ @retval Others Failed to clear the feature
+
+**/
+EFI_STATUS
+UsbIoClearFeature (
+ IN EFI_USB_IO_PROTOCOL *UsbIo,
+ IN UINTN Target,
+ IN UINT16 Feature,
+ IN UINT16 Index
+ )
+{
+ EFI_USB_DEVICE_REQUEST DevReq;
+ UINT32 UsbResult;
+ EFI_STATUS Status;
+
+ DevReq.RequestType = USB_REQUEST_TYPE (EfiUsbNoData, USB_REQ_TYPE_STANDARD, Target);
+ DevReq.Request = USB_REQ_CLEAR_FEATURE;
+ DevReq.Value = Feature;
+ DevReq.Index = Index;
+ DevReq.Length = 0;
+
+ Status = UsbIo->UsbControlTransfer (
+ UsbIo,
+ &DevReq,
+ EfiUsbNoData,
+ 10 * USB_STALL_1_MS,
+ NULL,
+ 0,
+ &UsbResult
+ );
+
+ return Status;
+}
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