/*********************************************************************************************
* File: usbsetup.c
* Author: Embest
* Desc: process the USB setup stage operations.
* History:
* purnnamu, MAR.25.2002
* S3C2400X usbsetup.c is ported for S3C2410X.
* purnnamu, AUG.20.2002
* rEP0_CSR should be used instead of rOUT_CSR1_REG for EP0 macros.
* R.X.Huang, March 12, 2005
* Programming modify, style of the program: nomenclature, commentary
* J.Y.Guo, April 28, 2005
* Modifying and reusing of S3C2410X u24xmon
*********************************************************************************************/
/*------------------------------------------------------------------------------------------*/
/* include files */
/*------------------------------------------------------------------------------------------*/
#include <string.h>
#include "2410lib.h"
#include "2410usb.h"
#include "usbmain.h"
#include "usb.h"
#include "usblib.h"
#include "usbsetup.h"
// *** 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.
// *** End point information ***
// EP0: control
// EP1: bulk in end point
// EP2: not used
// EP3: bulk out end point
// EP4: not used
/*------------------------------------------------------------------------------------------*/
/* Macro defines */
/*------------------------------------------------------------------------------------------*/
// 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;}
/*------------------------------------------------------------------------------------------*/
/* variables declare */
/*------------------------------------------------------------------------------------------*/
UINT32T ep0State;
UINT32T ep0SubState;
/*------------------------------------------------------------------------------------------*/
/* extern variables */
/*------------------------------------------------------------------------------------------*/
extern volatile int isUsbdSetConfiguration;
/*------------------------------------------------------------------------------------------*/
/* struct declare */
/*------------------------------------------------------------------------------------------*/
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;
/*------------------------------------------------------------------------------------------*/
/* constant define */
/*------------------------------------------------------------------------------------------*/
static const UINT8T descStr0[]={
4,STRING_TYPE,LANGID_US_L,LANGID_US_H, //codes representing languages
};
static const UINT8T 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 UINT8T 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
};
/*********************************************************************************************
* name: Ep0Handler
* func: Interrupt handler for EP0
* para: none
* ret: none
* modify:
* comment:
*********************************************************************************************/
void Ep0Handler(void)
{
static int ep0SubState;
int i;
UINT8T 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((UINT8T *)&descSetup,EP0_PKT_SIZE);
PrintEp0Pkt((UINT8T *)(&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(