usb.rar_S3C2440 原理图_S3C2440 USB_TE2440_USB S3C2440_s3c2440

/************************************************************** NAME: usbsetup.c DESC: process the USB setup stage operations. HISTORY: MAR.25.2002:purnnamu: S3C2400X usbsetup.c is ported for S3C2410X. AUG.20.2002:purnnamu: rEP0_CSR should be used instead of rOUT_CSR1_REG for EP0 macros. **************************************************************/ #include <string.h> #include "option.h" #include "2440addr.h" #include "2440lib.h" #include "def.h" #include "2440usb.h" #include "usbmain.h" #include "usb.h" #include "usblib.h" #include "usbsetup.h" // *** End point information *** // EP0: control // EP1: bulk in end point // EP2: not used // EP3: bulk out end point // EP4: not used // *** VERY IMPORTANT NOTE *** // Every descriptor size of EP0 should be 8n+m(m=1~7). // Otherwise, USB will not operate normally because the program // doesn't prepare the case that the descriptor size is 8n+0. // If the size of a descriptor is 8n, the 0 length packit should be sent. // Special thanks to E.S.Choi for reminding me of this USB specification. // =================================================================== // All following commands will operate only in case // - ep0_csr is valid. // =================================================================== #define CLR_EP0_OUT_PKT_RDY() rEP0_CSR=( ep0_csr & (~EP0_WR_BITS)| \ EP0_SERVICED_OUT_PKT_RDY ) #define CLR_EP0_OUTPKTRDY_DATAEND() rEP0_CSR=( ep0_csr & (~EP0_WR_BITS)| \ (EP0_SERVICED_OUT_PKT_RDY|EP0_DATA_END) ) #define SET_EP0_IN_PKT_RDY() rEP0_CSR=( ep0_csr & (~EP0_WR_BITS)| \ (EP0_IN_PKT_READY) ) #define SET_EP0_INPKTRDY_DATAEND() rEP0_CSR=( ep0_csr & (~EP0_WR_BITS)| \ (EP0_IN_PKT_READY|EP0_DATA_END) ) #define CLR_EP0_SETUP_END() rEP0_CSR=( ep0_csr & (~EP0_WR_BITS)| \ (EP0_SERVICED_SETUP_END) ) #define CLR_EP0_SENT_STALL() rEP0_CSR=( ep0_csr & (~EP0_WR_BITS)& \ (~EP0_SENT_STALL) ) #define FLUSH_EP0_FIFO() {while(rOUT_FIFO_CNT1_REG)rEP0_FIFO;} U32 ep0State; U32 ep0SubState; extern volatile int isUsbdSetConfiguration; volatile U8 Rwuen; volatile U8 Configuration=1; volatile U8 AlterSetting; volatile U8 Selfpwr=TRUE; volatile U8 device_status; volatile U8 interface_status; volatile U8 endpoint0_status; volatile U8 endpoint1_status; volatile U8 endpoint3_status; struct USB_SETUP_DATA descSetup; struct USB_DEVICE_DESCRIPTOR descDev; struct USB_CONFIGURATION_DESCRIPTOR descConf; struct USB_INTERFACE_DESCRIPTOR descIf; struct USB_ENDPOINT_DESCRIPTOR descEndpt0; struct USB_ENDPOINT_DESCRIPTOR descEndpt1; struct USB_CONFIGURATION_SET ConfigSet; struct USB_INTERFACE_GET InterfaceGet; struct USB_GET_STATUS StatusGet; //={0,0,0,0,0}; static const U8 descStr0[]={ 4,STRING_TYPE,LANGID_US_L,LANGID_US_H, //codes representing languages }; static const U8 descStr1[]={ //Manufacturer (0x14+2),STRING_TYPE, 'S',0x0,'y',0x0,'s',0x0,'t',0x0,'e',0x0,'m',0x0,' ',0x0,'M',0x0, 'C',0x0,'U',0x0, }; static const U8 descStr2[]={ //Product (0x2a+2),STRING_TYPE, 'S',0x0,'E',0x0,'C',0x0,' ',0x0,'S',0x0,'3',0x0,'C',0x0,'2',0x0, '4',0x0,'1',0x0,'0',0x0,'X',0x0,' ',0x0,'T',0x0,'e',0x0,'s',0x0, 't',0x0,' ',0x0,'B',0x0,'/',0x0,'D',0x0 }; void Ep0Handler(void) { static int ep0SubState; int i; U8 ep0_csr; rINDEX_REG=0; ep0_csr=rEP0_CSR; DbgPrintf("<0:%x]",ep0_csr); //DATAEND interrupt(ep0_csr==0x0) will be ignored //because ep0State==EP0_STATE_INIT when the DATAEND interrupt is issued. if(ep0_csr & EP0_SETUP_END) { // Host may end GET_DESCRIPTOR operation without completing the IN data stage. // If host does that, SETUP_END bit will be set. // OUT_PKT_RDY has to be also cleared because status stage sets OUT_PKT_RDY to 1. DbgPrintf("[SETUPEND]"); CLR_EP0_SETUP_END(); if(ep0_csr & EP0_OUT_PKT_READY) { FLUSH_EP0_FIFO(); //(???) //I think this isn't needed because EP0 flush is done automatically. CLR_EP0_OUT_PKT_RDY(); } ep0State=EP0_STATE_INIT; return; } //I think that EP0_SENT_STALL will not be set to 1. if(ep0_csr & EP0_SENT_STALL) { DbgPrintf("[STALL]"); CLR_EP0_SENT_STALL(); if(ep0_csr & EP0_OUT_PKT_READY) { CLR_EP0_OUT_PKT_RDY(); } ep0State=EP0_STATE_INIT; return; } if((ep0_csr & EP0_OUT_PKT_READY) && (ep0State==EP0_STATE_INIT)) { RdPktEp0((U8 *)&descSetup,EP0_PKT_SIZE); PrintEp0Pkt((U8 *)(&descSetup)); //DEBUG switch(descSetup.bRequest) { case GET_DESCRIPTOR: switch(descSetup.bValueH) { case DEVICE_TYPE: DbgPrintf("[GDD]"); CLR_EP0_OUT_PKT_RDY(); ep0State=EP0_STATE_GD_DEV_0; break; case CONFIGURATION_TYPE: DbgPrintf("[GDC]"); CLR_EP0_OUT_PKT_RDY(); if((descSetup.bLengthL+(descSetup.bLengthH<<8))>0x9) //bLengthH should be used for bLength=0x209 at WIN2K. ep0State=EP0_STATE_GD_CFG_0; //for WIN98,WIN2K else ep0State=EP0_STATE_GD_CFG_ONLY_0; //for WIN2K break; case STRING_TYPE: DbgPrintf("[GDS]"); CLR_EP0_OUT_PKT_RDY(); switch(descSetup.bValueL) { case 0: ep0State=EP0_STATE_GD_STR_I0; break; case 1: ep0State=EP0_STATE_GD_STR_I1; break; case 2: ep0State=EP0_STATE_GD_STR_I2; break; default: DbgPrintf("[UE:STRI?]"); break; } ep0SubState=0; break; case INTERFACE_TYPE: DbgPrintf("[GDI]"); CLR_EP0_OUT_PKT_RDY(); ep0State=EP0_STATE_GD_IF_ONLY_0; //for WIN98 break; case ENDPOINT_TYPE: DbgPrintf("[GDE]"); CLR_EP0_OUT_PKT_RDY(); switch(descSetup.bValueL&0xf) { case 0: ep0State=EP0_STATE_GD_EP0_ONLY_0; break; case 1: ep0State=EP0_STATE_GD_EP1_ONLY_0; break; default: DbgPrintf("[UE:GDE?]"); break; } break; default: DbgPrintf("[UE:GD?]"); break; } break; case SET_ADDRESS: DbgPrintf("[SA:%d]",descSetup.bValueL); rFUNC_ADDR_REG=descSetup.bValueL | 0x80; CLR_EP0_OUTPKTRDY_DATAEND(); //Because of no data control transfers. ep0State=EP0_STATE_INIT; break; case SET_CONFIGURATION: DbgPrintf("[SC]"); ConfigSet.ConfigurationValue=descSetup.bValueL; CLR_EP0_OUTPKTRDY_DATAEND(); //Because of no data control transfers. ep0State=EP0_STATE_INIT; isUsbdSetConfiguration=1; break; //////////////////////// For chapter 9 test //////////////////// case CLEAR_FEATURE: switch (descSetup.bmRequestType) { case DEVICE_RECIPIENT: if (descSetup.bValueL == 1) Rwuen = FALSE; break; case ENDPOINT_RECIPIENT: if (descSetup.bValueL == 0) { if((descSetup.bIndexL & 0x7f) == 0x00){ StatusGet.Endpoint0= 0; } if((descSetup.bIndexL & 0x8f) == 0x81){ // IN Endpoint 1 StatusGet.Endpoint1= 0; } if((descSetup.bIndexL & 0x8f) == 0x03){ // OUT Endpoint 3 StatusGet.Endpoint3= 0; } }