diff options
Diffstat (limited to 'libmaple/usb/usb_lib/usb_core.c')
| -rw-r--r-- | libmaple/usb/usb_lib/usb_core.c | 1013 |
1 files changed, 1013 insertions, 0 deletions
diff --git a/libmaple/usb/usb_lib/usb_core.c b/libmaple/usb/usb_lib/usb_core.c new file mode 100644 index 0000000..5cf9e87 --- /dev/null +++ b/libmaple/usb/usb_lib/usb_core.c @@ -0,0 +1,1013 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** +* File Name : usb_core.c +* Author : MCD Application Team +* Version : V2.2.1 +* Date : 09/22/2008 +* Description : Standard protocol processing (USB v2.0) +******************************************************************************** +* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS +* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. +* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, +* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE +* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING +* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. +*******************************************************************************/ + +/* Includes ------------------------------------------------------------------*/ +#include "usb_lib.h" +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +#define ValBit(VAR,Place) (VAR & (1 << Place)) +#define SetBit(VAR,Place) (VAR |= (1 << Place)) +#define ClrBit(VAR,Place) (VAR &= ((1 << Place) ^ 255)) + +#define Send0LengthData() { _SetEPTxCount(ENDP0, 0); \ + vSetEPTxStatus(EP_TX_VALID); \ + } + +#define vSetEPRxStatus(st) (SaveRState = st) +#define vSetEPTxStatus(st) (SaveTState = st) + +#define USB_StatusIn() Send0LengthData() +#define USB_StatusOut() vSetEPRxStatus(EP_RX_VALID) + +#define StatusInfo0 StatusInfo.bw.bb1 /* Reverse bb0 & bb1 */ +#define StatusInfo1 StatusInfo.bw.bb0 + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +u16_u8 StatusInfo; +USB_Bool Data_Mul_MaxPacketSize = FALSE; +/* Private function prototypes -----------------------------------------------*/ +static void DataStageOut(void); +static void DataStageIn(void); +static void NoData_Setup0(void); +static void Data_Setup0(void); +/* Private functions ---------------------------------------------------------*/ + +/******************************************************************************* +* Function Name : Standard_GetConfiguration. +* Description : Return the current configuration variable address. +* Input : Length - How many bytes are needed. +* Output : None. +* Return : Return 1 , if the request is invalid when "Length" is 0. +* Return "Buffer" if the "Length" is not 0. +*******************************************************************************/ +u8 *Standard_GetConfiguration(u16 Length) +{ + if (Length == 0) + { + pInformation->Ctrl_Info.Usb_wLength = + sizeof(pInformation->Current_Configuration); + return 0; + } + pUser_Standard_Requests->User_GetConfiguration(); + return (u8 *)&pInformation->Current_Configuration; +} + +/******************************************************************************* +* Function Name : Standard_SetConfiguration. +* Description : This routine is called to set the configuration value +* Then each class should configure device themself. +* Input : None. +* Output : None. +* Return : Return USB_SUCCESS, if the request is performed. +* Return USB_UNSUPPORT, if the request is invalid. +*******************************************************************************/ +RESULT Standard_SetConfiguration(void) +{ + + if ((pInformation->USBwValue0 <= + Device_Table.Total_Configuration) && (pInformation->USBwValue1 == 0) + && (pInformation->USBwIndex == 0)) /*call Back usb spec 2.0*/ + { + pInformation->Current_Configuration = pInformation->USBwValue0; + pUser_Standard_Requests->User_SetConfiguration(); + return USB_SUCCESS; + } + else + { + return USB_UNSUPPORT; + } +} + +/******************************************************************************* +* Function Name : Standard_GetInterface. +* Description : Return the Alternate Setting of the current interface. +* Input : Length - How many bytes are needed. +* Output : None. +* Return : Return 0, if the request is invalid when "Length" is 0. +* Return "Buffer" if the "Length" is not 0. +*******************************************************************************/ +u8 *Standard_GetInterface(u16 Length) +{ + if (Length == 0) + { + pInformation->Ctrl_Info.Usb_wLength = + sizeof(pInformation->Current_AlternateSetting); + return 0; + } + pUser_Standard_Requests->User_GetInterface(); + return (u8 *)&pInformation->Current_AlternateSetting; +} + +/******************************************************************************* +* Function Name : Standard_SetInterface. +* Description : This routine is called to set the interface. +* Then each class should configure the interface them self. +* Input : None. +* Output : None. +* Return : - Return USB_SUCCESS, if the request is performed. +* - Return USB_UNSUPPORT, if the request is invalid. +*******************************************************************************/ +RESULT Standard_SetInterface(void) +{ + RESULT Re; + /*Test if the specified Interface and Alternate Setting are supported by + the application Firmware*/ + Re = (*pProperty->Class_Get_Interface_Setting)(pInformation->USBwIndex0, pInformation->USBwValue0); + + if (pInformation->Current_Configuration != 0) + { + if ((Re != USB_SUCCESS) || (pInformation->USBwIndex1 != 0) + || (pInformation->USBwValue1 != 0)) + { + return USB_UNSUPPORT; + } + else if (Re == USB_SUCCESS) + { + pUser_Standard_Requests->User_SetInterface(); + pInformation->Current_Interface = pInformation->USBwIndex0; + pInformation->Current_AlternateSetting = pInformation->USBwValue0; + return USB_SUCCESS; + } + + } + + return USB_UNSUPPORT; +} + +/******************************************************************************* +* Function Name : Standard_GetStatus. +* Description : Copy the device request data to "StatusInfo buffer". +* Input : - Length - How many bytes are needed. +* Output : None. +* Return : Return 0, if the request is at end of data block, +* or is invalid when "Length" is 0. +*******************************************************************************/ +u8 *Standard_GetStatus(u16 Length) +{ + if (Length == 0) + { + pInformation->Ctrl_Info.Usb_wLength = 2; + return 0; + } + + StatusInfo.w = 0; + /* Reset Status Information */ + + if (Type_Recipient == (STANDARD_REQUEST | DEVICE_RECIPIENT)) + { + /*Get Device Status */ + u8 Feature = pInformation->Current_Feature; + + /* Remote Wakeup enabled */ + if (ValBit(Feature, 5)) + { + SetBit(StatusInfo0, 1); + } + + /* Bus-powered */ + if (ValBit(Feature, 6)) + { + ClrBit(StatusInfo0, 0); + } + else /* Self-powered */ + { + SetBit(StatusInfo0, 0); + } + } + /*Interface Status*/ + else if (Type_Recipient == (STANDARD_REQUEST | INTERFACE_RECIPIENT)) + { + return (u8 *)&StatusInfo; + } + /*Get EndPoint Status*/ + else if (Type_Recipient == (STANDARD_REQUEST | ENDPOINT_RECIPIENT)) + { + u8 Related_Endpoint; + u8 wIndex0 = pInformation->USBwIndex0; + + Related_Endpoint = (wIndex0 & 0x0f); + if (ValBit(wIndex0, 7)) + { + /* IN endpoint */ + if (_GetTxStallStatus(Related_Endpoint)) + { + SetBit(StatusInfo0, 0); /* IN Endpoint stalled */ + } + } + else + { + /* OUT endpoint */ + if (_GetRxStallStatus(Related_Endpoint)) + { + SetBit(StatusInfo0, 0); /* OUT Endpoint stalled */ + } + } + + } + else + { + return NULL; + } + pUser_Standard_Requests->User_GetStatus(); + return (u8 *)&StatusInfo; +} + +/******************************************************************************* +* Function Name : Standard_ClearFeature. +* Description : Clear or disable a specific feature. +* Input : None. +* Output : None. +* Return : - Return USB_SUCCESS, if the request is performed. +* - Return USB_UNSUPPORT, if the request is invalid. +*******************************************************************************/ +RESULT Standard_ClearFeature(void) +{ + u32 Type_Rec = Type_Recipient; + u32 Status; + + + if (Type_Rec == (STANDARD_REQUEST | DEVICE_RECIPIENT)) + {/*Device Clear Feature*/ + ClrBit(pInformation->Current_Feature, 5); + return USB_SUCCESS; + } + else if (Type_Rec == (STANDARD_REQUEST | ENDPOINT_RECIPIENT)) + {/*EndPoint Clear Feature*/ + DEVICE* pDev; + u32 Related_Endpoint; + u32 wIndex0; + u32 rEP; + + if ((pInformation->USBwValue != ENDPOINT_STALL) + || (pInformation->USBwIndex1 != 0)) + { + return USB_UNSUPPORT; + } + + pDev = &Device_Table; + wIndex0 = pInformation->USBwIndex0; + rEP = wIndex0 & ~0x80; + Related_Endpoint = ENDP0 + rEP; + + if (ValBit(pInformation->USBwIndex0, 7)) + { + /*Get Status of endpoint & stall the request if the related_ENdpoint + is Disabled*/ + Status = _GetEPTxStatus(Related_Endpoint); + } + else + { + Status = _GetEPRxStatus(Related_Endpoint); + } + + if ((rEP >= pDev->Total_Endpoint) || (Status == 0) + || (pInformation->Current_Configuration == 0)) + { + return USB_UNSUPPORT; + } + + + if (wIndex0 & 0x80) + { + /* IN endpoint */ + if (_GetTxStallStatus(Related_Endpoint )) + { + ClearDTOG_TX(Related_Endpoint); + SetEPTxStatus(Related_Endpoint, EP_TX_VALID); + } + } + else + { + /* OUT endpoint */ + if (_GetRxStallStatus(Related_Endpoint)) + { + if (Related_Endpoint == ENDP0) + { + /* After clear the STALL, enable the default endpoint receiver */ + SetEPRxCount(Related_Endpoint, Device_Property.MaxPacketSize); + _SetEPRxStatus(Related_Endpoint, EP_RX_VALID); + } + else + { + ClearDTOG_RX(Related_Endpoint); + _SetEPRxStatus(Related_Endpoint, EP_RX_VALID); + } + } + } + pUser_Standard_Requests->User_ClearFeature(); + return USB_SUCCESS; + } + + return USB_UNSUPPORT; +} + +/******************************************************************************* +* Function Name : Standard_SetEndPointFeature +* Description : Set or enable a specific feature of EndPoint +* Input : None. +* Output : None. +* Return : - Return USB_SUCCESS, if the request is performed. +* - Return USB_UNSUPPORT, if the request is invalid. +*******************************************************************************/ +RESULT Standard_SetEndPointFeature(void) +{ + u32 wIndex0; + u32 Related_Endpoint; + u32 rEP; + u32 Status; + + wIndex0 = pInformation->USBwIndex0; + rEP = wIndex0 & ~0x80; + Related_Endpoint = ENDP0 + rEP; + + if (ValBit(pInformation->USBwIndex0, 7)) + { + /* get Status of endpoint & stall the request if the related_ENdpoint + is Disabled*/ + Status = _GetEPTxStatus(Related_Endpoint); + } + else + { + Status = _GetEPRxStatus(Related_Endpoint); + } + + if (Related_Endpoint >= Device_Table.Total_Endpoint + || pInformation->USBwValue != 0 || Status == 0 + || pInformation->Current_Configuration == 0) + { + return USB_UNSUPPORT; + } + else + { + if (wIndex0 & 0x80) + { + /* IN endpoint */ + _SetEPTxStatus(Related_Endpoint, EP_TX_STALL); + } + + else + { + /* OUT endpoint */ + _SetEPRxStatus(Related_Endpoint, EP_RX_STALL); + } + } + pUser_Standard_Requests->User_SetEndPointFeature(); + return USB_SUCCESS; +} + +/******************************************************************************* +* Function Name : Standard_SetDeviceFeature. +* Description : Set or enable a specific feature of Device. +* Input : None. +* Output : None. +* Return : - Return USB_SUCCESS, if the request is performed. +* - Return USB_UNSUPPORT, if the request is invalid. +*******************************************************************************/ +RESULT Standard_SetDeviceFeature(void) +{ + SetBit(pInformation->Current_Feature, 5); + pUser_Standard_Requests->User_SetDeviceFeature(); + return USB_SUCCESS; +} + +/******************************************************************************* +* Function Name : Standard_GetDescriptorData. +* Description : Standard_GetDescriptorData is used for descriptors transfer. +* : This routine is used for the descriptors resident in Flash +* or RAM +* pDesc can be in either Flash or RAM +* The purpose of this routine is to have a versatile way to +* response descriptors request. It allows user to generate +* certain descriptors with software or read descriptors from +* external storage part by part. +* Input : - Length - Length of the data in this transfer. +* - pDesc - A pointer points to descriptor struct. +* The structure gives the initial address of the descriptor and +* its original size. +* Output : None. +* Return : Address of a part of the descriptor pointed by the Usb_ +* wOffset The buffer pointed by this address contains at least +* Length bytes. +*******************************************************************************/ +u8 *Standard_GetDescriptorData(u16 Length, ONE_DESCRIPTOR *pDesc) +{ + u32 wOffset; + + wOffset = pInformation->Ctrl_Info.Usb_wOffset; + if (Length == 0) + { + pInformation->Ctrl_Info.Usb_wLength = pDesc->Descriptor_Size - wOffset; + return 0; + } + + return pDesc->Descriptor + wOffset; +} + +/******************************************************************************* +* Function Name : DataStageOut. +* Description : Data stage of a Control Write Transfer. +* Input : None. +* Output : None. +* Return : None. +*******************************************************************************/ +void DataStageOut(void) +{ + ENDPOINT_INFO *pEPinfo = &pInformation->Ctrl_Info; + u32 save_rLength; + + save_rLength = pEPinfo->Usb_rLength; + + if (pEPinfo->CopyData && save_rLength) + { + u8 *Buffer; + u32 Length; + + Length = pEPinfo->PacketSize; + if (Length > save_rLength) + { + Length = save_rLength; + } + + Buffer = (*pEPinfo->CopyData)(Length); + pEPinfo->Usb_rLength -= Length; + pEPinfo->Usb_rOffset += Length; + + PMAToUserBufferCopy(Buffer, GetEPRxAddr(ENDP0), Length); + } + + if (pEPinfo->Usb_rLength != 0) + { + vSetEPRxStatus(EP_RX_VALID);/* re-enable for next data reception */ + SetEPTxCount(ENDP0, 0); + vSetEPTxStatus(EP_TX_VALID);/* Expect the host to abort the data OUT stage */ + } + /* Set the next State*/ + if (pEPinfo->Usb_rLength >= pEPinfo->PacketSize) + { + pInformation->ControlState = OUT_DATA; + } + else + { + if (pEPinfo->Usb_rLength > 0) + { + pInformation->ControlState = LAST_OUT_DATA; + } + else if (pEPinfo->Usb_rLength == 0) + { + pInformation->ControlState = WAIT_STATUS_IN; + USB_StatusIn(); + } + } +} + +/******************************************************************************* +* Function Name : DataStageIn. +* Description : Data stage of a Control Read Transfer. +* Input : None. +* Output : None. +* Return : None. +*******************************************************************************/ +void DataStageIn(void) +{ + ENDPOINT_INFO *pEPinfo = &pInformation->Ctrl_Info; + u32 save_wLength = pEPinfo->Usb_wLength; + u32 ControlState = pInformation->ControlState; + + u8 *DataBuffer; + u32 Length; + + if ((save_wLength == 0) && (ControlState == LAST_IN_DATA)) + { + if(Data_Mul_MaxPacketSize == TRUE) + { + /* No more data to send and empty packet */ + Send0LengthData(); + ControlState = LAST_IN_DATA; + Data_Mul_MaxPacketSize = FALSE; + } + else + { + /* No more data to send so STALL the TX Status*/ + ControlState = WAIT_STATUS_OUT; + vSetEPTxStatus(EP_TX_STALL); + } + + goto Expect_Status_Out; + } + + Length = pEPinfo->PacketSize; + ControlState = (save_wLength <= Length) ? LAST_IN_DATA : IN_DATA; + + if (Length > save_wLength) + { + Length = save_wLength; + } + + DataBuffer = (*pEPinfo->CopyData)(Length); + + UserToPMABufferCopy(DataBuffer, GetEPTxAddr(ENDP0), Length); + + SetEPTxCount(ENDP0, Length); + + pEPinfo->Usb_wLength -= Length; + pEPinfo->Usb_wOffset += Length; + vSetEPTxStatus(EP_TX_VALID); + + USB_StatusOut();/* Expect the host to abort the data IN stage */ + +Expect_Status_Out: + pInformation->ControlState = ControlState; +} + +/******************************************************************************* +* Function Name : NoData_Setup0. +* Description : Proceed the processing of setup request without data stage. +* Input : None. +* Output : None. +* Return : None. +*******************************************************************************/ +void NoData_Setup0(void) +{ + RESULT Result = USB_UNSUPPORT; + u32 RequestNo = pInformation->USBbRequest; + u32 ControlState; + + if (Type_Recipient == (STANDARD_REQUEST | DEVICE_RECIPIENT)) + { + /* Device Request*/ + /* SET_CONFIGURATION*/ + if (RequestNo == SET_CONFIGURATION) + { + Result = Standard_SetConfiguration(); + } + + /*SET ADDRESS*/ + else if (RequestNo == SET_ADDRESS) + { + if ((pInformation->USBwValue0 > 127) || (pInformation->USBwValue1 != 0) + || (pInformation->USBwIndex != 0) + || (pInformation->Current_Configuration != 0)) + /* Device Address should be 127 or less*/ + { + ControlState = STALLED; + goto exit_NoData_Setup0; + } + else + { + Result = USB_SUCCESS; + } + } + /*SET FEATURE for Device*/ + else if (RequestNo == SET_FEATURE) + { + if ((pInformation->USBwValue0 == DEVICE_REMOTE_WAKEUP) + && (pInformation->USBwIndex == 0) + && (ValBit(pInformation->Current_Feature, 5))) + { + Result = Standard_SetDeviceFeature(); + } + else + { + Result = USB_UNSUPPORT; + } + } + /*Clear FEATURE for Device */ + else if (RequestNo == CLEAR_FEATURE) + { + if (pInformation->USBwValue0 == DEVICE_REMOTE_WAKEUP + && pInformation->USBwIndex == 0 + && ValBit(pInformation->Current_Feature, 5)) + { + Result = Standard_ClearFeature(); + } + else + { + Result = USB_UNSUPPORT; + } + } + + } + + /* Interface Request*/ + else if (Type_Recipient == (STANDARD_REQUEST | INTERFACE_RECIPIENT)) + { + /*SET INTERFACE*/ + if (RequestNo == SET_INTERFACE) + { + Result = Standard_SetInterface(); + } + } + + /* EndPoint Request*/ + else if (Type_Recipient == (STANDARD_REQUEST | ENDPOINT_RECIPIENT)) + { + /*CLEAR FEATURE for EndPoint*/ + if (RequestNo == CLEAR_FEATURE) + { + Result = Standard_ClearFeature(); + } + /* SET FEATURE for EndPoint*/ + else if (RequestNo == SET_FEATURE) + { + Result = Standard_SetEndPointFeature(); + } + } + else + { + Result = USB_UNSUPPORT; + } + + + if (Result != USB_SUCCESS) + { + Result = (*pProperty->Class_NoData_Setup)(RequestNo); + if (Result == USB_NOT_READY) + { + ControlState = PAUSE; + goto exit_NoData_Setup0; + } + } + + if (Result != USB_SUCCESS) + { + ControlState = STALLED; + goto exit_NoData_Setup0; + } + + ControlState = WAIT_STATUS_IN;/* After no data stage SETUP */ + + USB_StatusIn(); + +exit_NoData_Setup0: + pInformation->ControlState = ControlState; + return; +} + +/******************************************************************************* +* Function Name : Data_Setup0. +* Description : Proceed the processing of setup request with data stage. +* Input : None. +* Output : None. +* Return : None. +*******************************************************************************/ +void Data_Setup0(void) +{ + u8 *(*CopyRoutine)(u16); + RESULT Result; + u32 Request_No = pInformation->USBbRequest; + + u32 Related_Endpoint, Reserved; + u32 wOffset, Status; + + + + CopyRoutine = NULL; + wOffset = 0; + + if (Request_No == GET_DESCRIPTOR) + { + if (Type_Recipient == (STANDARD_REQUEST | DEVICE_RECIPIENT)) + { + u8 wValue1 = pInformation->USBwValue1; + if (wValue1 == DEVICE_DESCRIPTOR) + { + CopyRoutine = pProperty->GetDeviceDescriptor; + } + else if (wValue1 == CONFIG_DESCRIPTOR) + { + CopyRoutine = pProperty->GetConfigDescriptor; + } + else if (wValue1 == STRING_DESCRIPTOR) + { + CopyRoutine = pProperty->GetStringDescriptor; + } /* End of GET_DESCRIPTOR */ + } + } + + /*GET STATUS*/ + else if ((Request_No == GET_STATUS) && (pInformation->USBwValue == 0) + && (pInformation->USBwLength == 0x0002) + && (pInformation->USBwIndex1 == 0)) + { + /* GET STATUS for Device*/ + if ((Type_Recipient == (STANDARD_REQUEST | DEVICE_RECIPIENT)) + && (pInformation->USBwIndex == 0)) + { + CopyRoutine = Standard_GetStatus; + } + + /* GET STATUS for Interface*/ + else if (Type_Recipient == (STANDARD_REQUEST | INTERFACE_RECIPIENT)) + { + if (((*pProperty->Class_Get_Interface_Setting)(pInformation->USBwIndex0, 0) == USB_SUCCESS) + && (pInformation->Current_Configuration != 0)) + { + CopyRoutine = Standard_GetStatus; + } + } + + /* GET STATUS for EndPoint*/ + else if (Type_Recipient == (STANDARD_REQUEST | ENDPOINT_RECIPIENT)) + { + Related_Endpoint = (pInformation->USBwIndex0 & 0x0f); + Reserved = pInformation->USBwIndex0 & 0x70; + + if (ValBit(pInformation->USBwIndex0, 7)) + { + /*Get Status of endpoint & stall the request if the related_ENdpoint + is Disabled*/ + Status = _GetEPTxStatus(Related_Endpoint); + } + else + { + Status = _GetEPRxStatus(Related_Endpoint); + } + + if ((Related_Endpoint < Device_Table.Total_Endpoint) && (Reserved == 0) + && (Status != 0)) + { + CopyRoutine = Standard_GetStatus; + } + } + + } + + /*GET CONFIGURATION*/ + else if (Request_No == GET_CONFIGURATION) + { + if (Type_Recipient == (STANDARD_REQUEST | DEVICE_RECIPIENT)) + { + CopyRoutine = Standard_GetConfiguration; + } + } + /*GET INTERFACE*/ + else if (Request_No == GET_INTERFACE) + { + if ((Type_Recipient == (STANDARD_REQUEST | INTERFACE_RECIPIENT)) + && (pInformation->Current_Configuration != 0) && (pInformation->USBwValue == 0) + && (pInformation->USBwIndex1 == 0) && (pInformation->USBwLength == 0x0001) + && ((*pProperty->Class_Get_Interface_Setting)(pInformation->USBwIndex0, 0) == USB_SUCCESS)) + { + CopyRoutine = Standard_GetInterface; + } + + } + + if (CopyRoutine) + { + pInformation->Ctrl_Info.Usb_wOffset = wOffset; + pInformation->Ctrl_Info.CopyData = CopyRoutine; + /* sb in the original the cast to word was directly */ + /* now the cast is made step by step */ + (*CopyRoutine)(0); + Result = USB_SUCCESS; + } + else + { + Result = (*pProperty->Class_Data_Setup)(pInformation->USBbRequest); + if (Result == USB_NOT_READY) + { + pInformation->ControlState = PAUSE; + return; + } + } + + if (pInformation->Ctrl_Info.Usb_wLength == 0xFFFF) + { + /* Data is not ready, wait it */ + pInformation->ControlState = PAUSE; + return; + } + if ((Result == USB_UNSUPPORT) || (pInformation->Ctrl_Info.Usb_wLength == 0)) + { + /* Unsupported request */ + pInformation->ControlState = STALLED; + return; + } + + + if (ValBit(pInformation->USBbmRequestType, 7)) + { + /* Device ==> Host */ + vu32 wLength = pInformation->USBwLength; + + /* Restrict the data length to be the one host asks */ + if (pInformation->Ctrl_Info.Usb_wLength > wLength) + { + pInformation->Ctrl_Info.Usb_wLength = wLength; + } + + else if (pInformation->Ctrl_Info.Usb_wLength < pInformation->USBwLength) + { + if (pInformation->Ctrl_Info.Usb_wLength < pProperty->MaxPacketSize) + { + Data_Mul_MaxPacketSize = FALSE; + } + else if ((pInformation->Ctrl_Info.Usb_wLength % pProperty->MaxPacketSize) == 0) + { + Data_Mul_MaxPacketSize = TRUE; + } + } + + pInformation->Ctrl_Info.PacketSize = pProperty->MaxPacketSize; + DataStageIn(); + } + else + { + pInformation->ControlState = OUT_DATA; + vSetEPRxStatus(EP_RX_VALID); /* enable for next data reception */ + } + + return; +} + +/******************************************************************************* +* Function Name : Setup0_Process +* Description : Get the device request data and dispatch to individual process. +* Input : None. +* Output : None. +* Return : Post0_Process. +*******************************************************************************/ +u8 Setup0_Process(void) +{ + + union + { + u8* b; + u16* w; + } pBuf; + + pBuf.b = PMAAddr + (u8 *)(_GetEPRxAddr(ENDP0) * 2); /* *2 for 32 bits addr */ + + if (pInformation->ControlState != PAUSE) + { + pInformation->USBbmRequestType = *pBuf.b++; /* bmRequestType */ + pInformation->USBbRequest = *pBuf.b++; /* bRequest */ + pBuf.w++; /* word not accessed because of 32 bits addressing */ + pInformation->USBwValue = ByteSwap(*pBuf.w++); /* wValue */ + pBuf.w++; /* word not accessed because of 32 bits addressing */ + pInformation->USBwIndex = ByteSwap(*pBuf.w++); /* wIndex */ + pBuf.w++; /* word not accessed because of 32 bits addressing */ + pInformation->USBwLength = *pBuf.w; /* wLength */ + } + + pInformation->ControlState = SETTING_UP; + if (pInformation->USBwLength == 0) + { + /* Setup with no data stage */ + NoData_Setup0(); + } + else + { + /* Setup with data stage */ + Data_Setup0(); + } + return Post0_Process(); +} + +/******************************************************************************* +* Function Name : In0_Process +* Description : Process the IN token on all default endpoint. +* Input : None. +* Output : None. +* Return : Post0_Process. +*******************************************************************************/ +u8 In0_Process(void) +{ + u32 ControlState = pInformation->ControlState; + + if ((ControlState == IN_DATA) || (ControlState == LAST_IN_DATA)) + { + DataStageIn(); + /* ControlState may be changed outside the function */ + ControlState = pInformation->ControlState; + } + + else if (ControlState == WAIT_STATUS_IN) + { + if ((pInformation->USBbRequest == SET_ADDRESS) && + (Type_Recipient == (STANDARD_REQUEST | DEVICE_RECIPIENT))) + { + SetDeviceAddress(pInformation->USBwValue0); + pUser_Standard_Requests->User_SetDeviceAddress(); + } + (*pProperty->Process_Status_IN)(); + ControlState = STALLED; + } + + else + { + ControlState = STALLED; + } + + pInformation->ControlState = ControlState; + + return Post0_Process(); +} + +/******************************************************************************* +* Function Name : Out0_Process +* Description : Process the OUT token on all default endpoint. +* Input : None. +* Output : None. +* Return : Post0_Process. +*******************************************************************************/ +u8 Out0_Process(void) +{ + u32 ControlState = pInformation->ControlState; + + if ((ControlState == OUT_DATA) || (ControlState == LAST_OUT_DATA)) + { + DataStageOut(); + ControlState = pInformation->ControlState; /* may be changed outside the function */ + } + + else if (ControlState == WAIT_STATUS_OUT) + { + (*pProperty->Process_Status_OUT)(); + ControlState = STALLED; + } + + else if ((ControlState == IN_DATA) || (ControlState == LAST_IN_DATA)) + { + /* host aborts the transfer before finish */ + ControlState = STALLED; + } + + /* Unexpect state, STALL the endpoint */ + else + { + ControlState = STALLED; + } + + pInformation->ControlState = ControlState; + + return Post0_Process(); +} + +/******************************************************************************* +* Function Name : Post0_Process +* Description : Stall the Endpoint 0 in case of error. +* Input : None. +* Output : None. +* Return : - 0 if the control State is in PAUSE +* - 1 if not. +*******************************************************************************/ +u8 Post0_Process(void) +{ + SetEPRxCount(ENDP0, Device_Property.MaxPacketSize); + + if (pInformation->ControlState == STALLED) + { + vSetEPRxStatus(EP_RX_STALL); + vSetEPTxStatus(EP_TX_STALL); + } + + return (pInformation->ControlState == PAUSE); +} + +/******************************************************************************* +* Function Name : SetDeviceAddress. +* Description : Set the device and all the used Endpoints addresses. +* Input : - Val: device adress. +* Output : None. +* Return : None. +*******************************************************************************/ +void SetDeviceAddress(u8 Val) +{ + u32 i; + u32 nEP = Device_Table.Total_Endpoint; + + /* set address in every used endpoint */ + for (i = 0; i < nEP; i++) + { + _SetEPAddress((u8)i, (u8)i); + } /* for */ + _SetDADDR(Val | DADDR_EF); /* set device address and enable function */ +} + +/******************************************************************************* +* Function Name : NOP_Process +* Description : No operation function. +* Input : None. +* Output : None. +* Return : None. +*******************************************************************************/ +void NOP_Process(void) +{ +} + +/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/ |