www.pudn.com > S3C2410_USB_Device.rar > usbsetup.c
/**************************************************************
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 "def.h"
#include "config.h"
#include "board.h"
#include "2410addr.h"
#include "2410usb.h"
#include "usblib.h"
#include "usbsetup.h"
#include "usbout.h"
#include "usbin.h"
#include "usb.h"
#ifdef USB_DOWNLOAD_SUPPORT
// *** 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() {register i;while(rOUT_FIFO_CNT1_REG)i=rEP0_FIFO;}
U32 ep0State;
U32 ep0SubState;
extern volatile int isUsbdSetConfiguration;
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;
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;
// DbgOut("<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.
// DbgOut("[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)
{
// DbgOut("[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);
switch(descSetup.bRequest)
{
case GET_DESCRIPTOR:
switch(descSetup.bValueH)
{
case DEVICE_TYPE:
// DbgOut("[GDD]");
CLR_EP0_OUT_PKT_RDY();
ep0State=EP0_STATE_GD_DEV_0;
break;
case CONFIGURATION_TYPE:
// DbgOut("[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:
// DbgOut("[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:
// DbgOut("[UE:STRI?]");
break;
}
ep0SubState=0;
break;
case INTERFACE_TYPE:
// DbgOut("[GDI]");
CLR_EP0_OUT_PKT_RDY();
ep0State=EP0_STATE_GD_IF_ONLY_0; //for WIN98
break;
case ENDPOINT_TYPE:
// DbgOut("[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:
// DbgOut("[UE:GDE?]");
break;
}
break;
default:
// DbgOut("[UE:GD?]");
break;
}
break;
case SET_ADDRESS:
// DbgOut("[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:
// DbgOut("[SC]");
CLR_EP0_OUTPKTRDY_DATAEND(); //Because of no data control transfers.
ep0State=EP0_STATE_INIT;
isUsbdSetConfiguration=1;
break;
default:
// DbgOut("[UE:SETUP=%x]",descSetup.bRequest);
CLR_EP0_OUTPKTRDY_DATAEND(); //Because of no data control transfers.
ep0State=EP0_STATE_INIT;
break;
}
}
switch(ep0State)
{
case EP0_STATE_INIT:
break;
//=== GET_DESCRIPTOR:DEVICE ===
case EP0_STATE_GD_DEV_0:
// DbgOut("[GDD0]");
WrPktEp0((U8 *)&descDev+0,8); //EP0_PKT_SIZE
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_DEV_1;
break;
case EP0_STATE_GD_DEV_1:
// DbgOut("[GDD1]");
WrPktEp0((U8 *)&descDev+0x8,8);
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_DEV_2;
break;
case EP0_STATE_GD_DEV_2:
// DbgOut("[GDD2]");
WrPktEp0((U8 *)&descDev+0x10,2); //8+8+2=0x12
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
break;
//=== GET_DESCRIPTOR:CONFIGURATION+INTERFACE+ENDPOINT0+ENDPOINT1 ===
//Windows98 gets these 4 descriptors all together by issuing only a request.
//Windows2000 gets each descriptor seperately.
case EP0_STATE_GD_CFG_0:
// DbgOut("[GDC0]");
WrPktEp0((U8 *)&descConf+0,8); //EP0_PKT_SIZE
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_CFG_1;
break;
case EP0_STATE_GD_CFG_1:
// DbgOut("[GDC1]");
WrPktEp0((U8 *)&descConf+8,1);
WrPktEp0((U8 *)&descIf+0,7);
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_CFG_2;
break;
case EP0_STATE_GD_CFG_2:
// DbgOut("[GDC2]");
WrPktEp0((U8 *)&descIf+7,2);
WrPktEp0((U8 *)&descEndpt0+0,6);
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_CFG_3;
break;
case EP0_STATE_GD_CFG_3:
// DbgOut("[GDC3]");
WrPktEp0((U8 *)&descEndpt0+6,1);
WrPktEp0((U8 *)&descEndpt1+0,7);
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_CFG_4;
break;
case EP0_STATE_GD_CFG_4:
// DbgOut("[GDC4]");
//zero length data packit
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
break;
//=== GET_DESCRIPTOR:CONFIGURATION ONLY===
case EP0_STATE_GD_CFG_ONLY_0:
// DbgOut("[GDCO0]");
WrPktEp0((U8 *)&descConf+0,8); //EP0_PKT_SIZE
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_CFG_ONLY_1;
break;
case EP0_STATE_GD_CFG_ONLY_1:
// DbgOut("[GDCO1]");
WrPktEp0((U8 *)&descConf+8,1);
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
break;
//=== GET_DESCRIPTOR:INTERFACE ONLY===
case EP0_STATE_GD_IF_ONLY_0:
// DbgOut("[GDI0]");
WrPktEp0((U8 *)&descIf+0,8);
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_IF_ONLY_1;
break;
case EP0_STATE_GD_IF_ONLY_1:
// DbgOut("[GDI1]");
WrPktEp0((U8 *)&descIf+8,1);
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
break;
//=== GET_DESCRIPTOR:ENDPOINT 0 ONLY===
case EP0_STATE_GD_EP0_ONLY_0:
// DbgOut("[GDE00]");
WrPktEp0((U8 *)&descEndpt0+0,7);
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
break;
//=== GET_DESCRIPTOR:ENDPOINT 1 ONLY===
case EP0_STATE_GD_EP1_ONLY_0:
// DbgOut("[GDE10]");
WrPktEp0((U8 *)&descEndpt1+0,7);
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
break;
//=== GET_DESCRIPTOR:STRING ===
case EP0_STATE_GD_STR_I0:
// DbgOut("[GDS0_0]");
WrPktEp0((U8 *)descStr0, 4 );
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
ep0SubState=0;
break;
case EP0_STATE_GD_STR_I1:
// DbgOut("[GDS1_%d]",ep0SubState);
if( (ep0SubState*EP0_PKT_SIZE+EP0_PKT_SIZE)+++
descConf.wTotalLengthH=0;
descConf.bNumInterfaces=1;
//dbg descConf.bConfigurationValue=2; //why 2? There's no reason.
descConf.bConfigurationValue=1;
descConf.iConfiguration=0;
descConf.bmAttributes=CONF_ATTR_DEFAULT; //bus powered only.
descConf.maxPower=25; //draws 50mA current from the USB bus.
//Standard interface descriptor
descIf.bLength=0x9;
descIf.bDescriptorType=INTERFACE_TYPE;
descIf.bInterfaceNumber=0x0;
descIf.bAlternateSetting=0x0; //?
descIf.bNumEndpoints=2; //# of endpoints except EP0
descIf.bInterfaceClass=0xff; //0x0 ?
descIf.bInterfaceSubClass=0x0;
descIf.bInterfaceProtocol=0x0;
descIf.iInterface=0x0;
//Standard endpoint0 descriptor
descEndpt0.bLength=0x7;
descEndpt0.bDescriptorType=ENDPOINT_TYPE;
descEndpt0.bEndpointAddress=1|EP_ADDR_IN; // 2400Xendpoint 1 is IN endpoint.
descEndpt0.bmAttributes=EP_ATTR_BULK;
descEndpt0.wMaxPacketSizeL=EP1_PKT_SIZE; //64
descEndpt0.wMaxPacketSizeH=0x0;
descEndpt0.bInterval=0x0; //not used
//Standard endpoint1 descriptor
descEndpt1.bLength=0x7;
descEndpt1.bDescriptorType=ENDPOINT_TYPE;
descEndpt1.bEndpointAddress=3|EP_ADDR_OUT; // 2400X endpoint 3 is OUT endpoint.
descEndpt1.bmAttributes=EP_ATTR_BULK;
descEndpt1.wMaxPacketSizeL=EP3_PKT_SIZE; //64
descEndpt1.wMaxPacketSizeH=0x0;
descEndpt1.bInterval=0x0; //not used
}
#endif