?? host_811.c
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////////////////////////////////////////////////////////////////////////////////
// Cypress Semiconductor - Customer Design Center
////////////////////////////////////////////////////////////////////////////////
// File: host_811.c
// Purpose: 8051 firmware to master SL811 Embedded Host.
// Contains SL811-related control firmware.
// Based on SL811HST code written by cxn.
// H/W Target: SL811HST(Rev 1.5) + EZUSB DEV KIT
// IMPORTANT : Turn ON SW4 of S6-DIP-SWITCH
// to enable upper 32K memory on EZUSB Dev Kit
//
// $Header: /USB/ez811/firmware/Emb_Host/host_811.c 8 5/14/02 8:30p Tpm $
// Copyright (c) 2002 Cypress Semiconductor. May not be reproduced without permission.
// See the license agreement for more details.
////////////////////////////////////////////////////////////////////////////////
#include "host_811.h"
#include "Regs240x.h"
////////////////////////////////////////////////////////////////////////////////
// Code and Xdata Memory Space
////////////////////////////////////////////////////////////////////////////////
//
// ** Upper 32K external memory **
// (PROGRAM'S CODE/XDATA MEMORY ALLOCATION)
// Program xdata Space : 0x2000 ~ 0x23FF -> ALL XDATA (size:0x0400,1K)(ISO unused data mem)
// Program Code Space1 : 0x8000 ~ 0x9EFF -> ?FW, ?EZ811 (size:0x1F00,7K) (ext. code memory)
// Program Code Space2 : 0xA000 ~ 0xDFFF -> ?SL811H (size:0x4000,16K)(ext. code memory)
// (MONITOR'S CODE/XDATA MEMORY ALLOCATION) (SHOULD NEVER BE USED)
// Monitor xdata Space : 0x9F00 ~ 0x9FFF (size:0x0100,256)(ext. code memory)
// Monitor Code Space : 0xE000 ~ 0xFFFF (size:0x2000,8K) (ext. code memory)
//
// ** Lower 32K external memory **
// SL811H_ADDR address : 0x4000
// SL811H_DATA address : 0x4001
//
// ** Internal 8K EZUSB code/xdata memory **
// Both USBJmpTb.a51 and Dscr.a51 code are located to EZUSB internal 8K memory
//
// (See Project -> Options for Target 'Target 1' for detail settings)
//
//*****************************************************************************************
// SL811H Modules (major routines only):
//*****************************************************************************************
// 1) usbXfer() : handles usd data transfer, SETUP,IN, OUT
// 2) ep0Xfer() : handles endpoint zero control pipe
// 3) DataRW() : handles data endpoint transfer pipe
// 4) EnumUsbDev() : device enum(HID/HUB), excl. multi-interface
// 5) HubPortEnum() : hub port device enum, incl. dynamic USB address
// 6) speed_detect(): SL811H slave device attach/speed detect
// 7) slave_detect(): Main loop control between SL811H & EZUSB & GUI
// 8) host_811.c : Entire code size
//*****************************************************************************************
// SL811HST+EZUSB Hardware Resources :
//*****************************************************************************************
// SL811HST <--> AN2131QC <--> FUNCTIONS (looking from SL811H side)
// A0 <--> A0 <--> (I) Address entry for SL811H, '0'-addr, '1'-data
// D0 ~ D7 <--> D0 ~ D7 <--> (B) 8-bit Data Bus
// nCS <--> A15 <--> (I) Enable lower 32K memory(where SL811H is mapped)
// nRD <--> nRD (PC7) <--> (I) Read (active low)
// nWR <--> nWR (PC6) <--> (I) Write (active low)
// nRST <--> PB0 <--> (I) SL811HST's reset (active low)
// MS_SEL <--> PB1 <--> (I) SL811HST's master/slave select, '0'-host
// INTR <--> INT4 (PB4) <--> (O) SL811HST's interrupt (active high) not used
// ACTIVE_LED <--> PB6 <--> Blink - waiting for enum, On - enumerated
//
// For Downstream Port LEDs on Hub (not present on Demo Board):
// DOWNSTREAM PORT1 LED 0x80 // PA bit 7
// DOWNSTREAM PORT2 LED 0x40 // PA bit 6
// DOWNSTREAM PORT3 LED 0x20 // PA bit 5
// DOWNSTREAM PORT4 LED 0x10 // PA bit 4
//
//*****************************************************************************************
// Monitor (Serial Port 1) Hardware Resources :
//*****************************************************************************************
// PB2 - (I) RxD1 (looking from EZUSB side)
// PB2 - (0) TxD1
// PC6 - (O) nWR
// PC7 - (O) nRD
//*****************************************************************************************
// xdata variables
//*****************************************************************************************
//xdata BYTE SL811H_ADDR _at_ 0x4000; // A0 = '0' to external memory
//xdata BYTE SL811H_DATA _at_ 0x4001; // A0 = '1' (EZ-USB Dev Kit - SW4 ON)
xdata BYTE DBUF[256]; // at 0x2000 for general descriptors data
xdata BYTE STATUS[8]; // for status data buffer
xdata BYTE REGBUFF[16]; // Buffer for Register Data
xdata BYTE HOSTCMD[8]; // EZUSB's OUT1 host command data
xdata BYTE pHOSTCMD[8]; // previous data transfer info, during data transfer
xdata BYTE HubChange[1]; // Hub port endpoint 1 data status
xdata BYTE DataBufLen; // EZUSB's IN #3 data transfer buffer length
xdata BYTE pNumPort; // Number of downstream ports on hub
xdata BYTE remainder; // Remaining byte in a USB transfer
xdata pUSBDEV uDev[MAX_DEV]; // Multiple USB devices attributes, Max 5 devices
xdata pHUBDEV uHub; // Struct for downstream device on HUB
xdata pDevDesc pDev; // Device descriptor struct
xdata pCfgDesc pCfg; // Configuration descriptor struct
xdata pIntfDesc pIfc; // Interface descriptor struct
xdata pEPDesc pEnp; // Endpoint descriptor struct
xdata pStrDesc pStr; // String descriptor struct
xdata pHidDesc pHid; // HID class descriptor struct
xdata pHubDesc pHub; // HUD class descriptor struct
xdata pPortStatus pStat; // HID ports status
//*****************************************************************************************
// Boolean Logic Defines
//*****************************************************************************************
BOOL SLAVE_FOUND; // Slave USB device found
BOOL SLAVE_ENUMERATED; // slave USB device enumeration done
BOOL FULL_SPEED; // Full-Speed = TRUE, Low-Speed = FALSE
BOOL HUB_DEVICE; // HUB device = TRUE
BOOL BULK_OUT_DONE; // Set when EZUSB's OUT1 hostcmd xfer is done
BOOL DESC_XFER; // Set when there is data for EZUSB's IN1 desc xfer
BOOL DATA_XFER; // Set when there is data for EZUSB's IN3 data xfer
BOOL DATA_XFER_OUT; // Set when there is data for EZUSB's OUT3 data xfer
BOOL CONFIG_DONE; // Set when EZUSB completes its enumeration process.
BOOL TIMEOUT_ERR; // timeout error during data endpoint transfer
BOOL DATA_STOP; // device unplugged during data transfer
BOOL DATA_INPROCESS; // set when we are in a data pipe transfer
BOOL pLS_HUB; // indicate previous command is a LS device on hub
BOOL dsPoll; // poll downstream port conections
BOOL bData1;
//*****************************************************************************************
// Byte Read from SL811H
// a = register address
// return = data in register
//*****************************************************************************************
BYTE SL811Read(BYTE a)
{
SL811H_ADDR = a;
return (SL811H_DATA&0xFF);
}
//*****************************************************************************************
// Byte Write to SL811H
// a = register address
// d = data to be written to this register address
//*****************************************************************************************
void SL811Write(BYTE a, BYTE d)
{
SL811H_ADDR = a;
SL811H_DATA = d&0xFF;
}
//*****************************************************************************************
// Buffer Read from SL811H
// addr = buffer start address
// s = return buffer address where data are to be save/read
// c = buffer data length
//*****************************************************************************************
void SL811BufRead(BYTE addr, BYTE *s, BYTE c)
{
char tmp_char;
SL811H_ADDR = addr;
while (c--)
{
tmp_char = SL811H_DATA;
*s++ = (BYTE)tmp_char&0xFF;
}
}
//*****************************************************************************************
// Buffer Write to SL811H
// addr = buffer start address
// s = buffer address where data are to be written
// c = buffer data length
//*****************************************************************************************
void SL811BufWrite(BYTE addr, BYTE *s, BYTE c)
{
SL811H_ADDR = addr;
while (c--)
SL811H_DATA = *s++;
}
//*****************************************************************************************
// Swap high and low byte
//*****************************************************************************************
WORD WordSwap(WORD input)
{
return(((input&0x00FF)<<16)|((input&0x00FF0000)>>16));
}
//*****************************************************************************************
// UsbReset during enumeration of device attached directly to SL811HS
//*****************************************************************************************
void USBReset()
{
BYTE tmp;
tmp = SL811Read(CtrlReg);
SL811Write(CtrlReg,tmp|0x08);
EZUSB_Delay(25);
SL811Write(CtrlReg,tmp);
}
//*****************************************************************************************
// usbXfer:
// successful transfer = return TRUE
// fail transfer = return FALSE
//*****************************************************************************************
int usbXfer(BYTE usbaddr, BYTE endpoint, BYTE pid, BYTE iso, WORD wPayload, WORD wLen, BYTE *buffer)
{
xdata BYTE cmd, result, timeout, intr;
xdata BYTE xferLen, bufLen, data0, data1, dataX, addr;
//------------------------------------------------
// Default setting for usb trasnfer
//------------------------------------------------
bufLen = dataX = timeout = 0; //reset all
data0 = EP0_Buf; // DATA0 buffer address
data1 = data0 + (BYTE)wPayload; // DATA1 buffer address
DATA_STOP = TIMEOUT_ERR = FALSE; // set default conditions
//------------------------------------------------
// Define data transfer payload
//------------------------------------------------
if (wLen >= wPayload) // select proper data payload
xferLen = wPayload; // limit to wPayload size
else // else take < payload len
xferLen = wLen; //
//------------------------------------------------
// For IN token
//------------------------------------------------
if (pid==PID_IN) // for current IN tokens
{ //
if(FULL_SPEED) //
cmd = sDATA0_RD; // FS/FS on Hub, sync to sof
else // LS, no sync to sof for IN
cmd = DATA0_RD; //
//-------------------------------------------- response to OUT can propagate to SL811HS
// handling LS device on HUB
//--------------------------------------------
if(HUB_DEVICE && usbaddr!=HUB_ADDR) // Transfer on Hub, USB addr #0, #2..#5 only
{
if(uHub.bPortSpeed[usbaddr]) // If transfer of LS on Hub & previous is
cmd = psDATA0_RD; // SETUP & current is IN, no sync to sof,
}
}
//------------------------------------------------
// For OUT token
//------------------------------------------------
else if(pid==PID_OUT) // for OUT tokens
{
if(xferLen) // only when there are
SL811BufWrite(data0,buffer,xferLen); // data to transfer on USB
if(FULL_SPEED)
cmd = sDATA0_WR; // FS/FS on Hub, sync to sof
else // LS, no sync to sof for OUT
cmd = DATA0_WR;
//--------------------------------------------
// handling LS device on HUB
//--------------------------------------------
if(HUB_DEVICE && usbaddr!=HUB_ADDR) // Transfer on Hub, USB addr #0, #2..#5 only
{
if(uHub.bPortSpeed[usbaddr]) // If transfer of LS on Hub, previous
cmd = psDATA0_WR;
}
// implement data toggle
bData1 = uDev[usbaddr].bData1[endpoint];
uDev[usbaddr].bData1[endpoint] = (uDev[usbaddr].bData1[endpoint] ? 0 : 1); // DataToggle
if(bData1)
cmd |= 0x40; // Set Data1 bit in command
}
//------------------------------------------------
// For SETUP/OUT token
//------------------------------------------------
else // for current SETUP/OUT tokens
{
if(xferLen) // only when there are
SL811BufWrite(data0,buffer,xferLen); // data to transfer on USB
if(FULL_SPEED)
cmd = sDATA0_WR; // FS/FS on Hub, sync to sof
else // LS, no sync to sof for OUT
cmd = DATA0_WR;
//--------------------------------------------
// handling LS device on HUB
//--------------------------------------------
if(HUB_DEVICE && usbaddr!=HUB_ADDR) // Transfer on Hub, USB addr #0, #2..#5 only
{
if(uHub.bPortSpeed[usbaddr]) // If transfer of LS on Hub, previous
cmd = psDATA0_WR;
}
}
//------------------------------------------------
// Isochronous data transfer setting
//------------------------------------------------
if (iso)
cmd |= ISO_BIT; // if iso setup ISO mode
//------------------------------------------------
// For EP0's IN/OUT token data, start with DATA1
// Control Endpoint0's status stage.
// For data endpoint, IN/OUT data, start ????
//------------------------------------------------
if (endpoint == 0 && pid != PID_SETUP) // for Ep0's IN/OUT token
cmd |= 0x40; // always set DATA1
//------------------------------------------------
// Arming of USB data transfer for the first pkt
//------------------------------------------------
SL811Write(EP0Status,((endpoint&0x0F)|pid)); // PID + EP address
SL811Write(EP0Counter,usbaddr); // USB address
SL811Write(EP0Address,data0); // buffer address, start with "data0"
SL811Write(EP0XferLen,xferLen); // data transfer length
SL811Write(IntStatus,INT_CLEAR); // clear interrupt status
SL811Write(EP0Control,cmd); // Enable ARM and USB transfer start here
//------------------------------------------------
// Main loop for completing a wLen data trasnfer
//------------------------------------------------
while(TRUE)
{
//---------------Wait for done interrupt------------------
while(TRUE) // always ensure requested device is
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