📄 mainloop.c
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/*
//*************************************************************************
//
// P H I L I P S P R O P R I E T A R Y
//
// COPYRIGHT (c) 1999 BY PHILIPS SINGAPORE.
// -- ALL RIGHTS RESERVED --
//
// File Name: MainLoop.C
// Author: Hilbert Zhang ZhenYu
// Created: Nov. 19 99
// Modified:
// Revision: 0.0.
//
//*************************************************************************
// Implementation Notes:
//
// 4. Bulk-Only Transport FSM
// IDLE Stage -> CBW -> CBW Proc -> DATA OUT Stage -> CSW Proc -> CSW Stage -> IDLE
// IDLE Stage -> CBW -> CBW Proc -> DATA IN Stage -> CSW Proc -> CSW Stage -> IDLE
// STALL Stage -> IDLE -> ...
//
//
// 3. Default Control Pipe Finite State Machine
// SETUP Stage -> SETUP Proc -> DATA OUT Stage -> CONTROL OUT Handshake -> STATUS Stage -> IDLE
// SETUP Stage -> SETUP Proc -> CONTROL OUT Handshake -> STATUS Stage -> IDLE
// SETUP Stage -> SETUP Proc -> DATA IN Stage-> CONTROL IN Handshake ->STATUS Stage -> IDLE
// STALL -> SETUP Stage -> ...
//
// 2. Stack Overflow Avoidance.
// Setup TK overwritten allowance.
//
// 1. System Modeling
// A. D12
// B. 8051
// C. ATA controller emulation by 8051
//
// 0. 8051 Modeling
// A. Target 8051 , 128B RAM, 16KB ROM
// B. Choose 2 IRQL levels, Interrupt Priority 0 as IRQL_1, Mainloop as IRQL_0
// C. Bit Address Space, Byte Ram Addess Space, Code Address Space, IO port Space
//
//*************************************************************************
// Development Environment
//
// 1. Use VC++ IDE instead of DOS enviroment
// 0. Keil C Ver4
//
//*************************************************************************
*/
#include <reg51.h> /* special function register declarations */
#define GLOBAL_EXT //定义全局
#include "SysCnfg.h"
#include "BasicTyp.H"
#include "usb100.h"
#include "Common.h"
#include "Hal4Sys.h"
#include "Hal4d12.h"
#include "Hal4ata.h"
//#include "ATA.h"
#include "RBCCmd.h"
#include "RBC.h"
#include "mainloop.h"
#include "chap_9.h"
#include "TPBulk.h"
/*
//*************************************************************************
// Public data
//*************************************************************************
*/
sfr AUXR = 0xDA;
// bit Flags
STRUC_EXT BITFLAGS BDATA_SEG bFlags;
// MCU Timer bit flags
BIT_EXT MCUBF_Timer = bFlags.value^0;
INT8_EXT Hal4Sys_ClockTicks = 0;
// D12 bit flags
BIT_EXT D12BF_SetupOverwritten = bFlags.value^1;
BIT_EXT D12BF_Configuration = bFlags.value^2;
//USB
// DefaultControlPipe Finite State Machine [One-Hot]
INT8_EXT BDATA_SEG DCPFSMstate;
BIT_EXT DCPFSM_SetupProc = DCPFSMstate^0;
BIT_EXT DCPFSM_DataIn = DCPFSMstate^1;
BIT_EXT DCPFSM_DataOut = DCPFSMstate^2;
BIT_EXT DCPFSM_COhandshake = DCPFSMstate^3;
BIT_EXT DCPFSM_CIhandshake = DCPFSMstate^4;
BIT_EXT DCPFSM_Stall = DCPFSMstate^7;
// DCP FSM
// SETUP Stage -> SETUP Proc -> DATA OUT Stage -> CONTROL OUT Handshake -> STATUS Stage -> IDLE
// SETUP Stage -> SETUP Proc -> CONTROL OUT Handshake -> STATUS Stage -> IDLE
// SETUP Stage -> SETUP Proc -> DATA IN Stage-> CONTROL IN Handshake ->STATUS Stage -> IDLE
//
// USB Device Request
STRUC_EXT DEVICE_REQUEST DATA_SEG DCPDeviceRequest;
INT8_EXT UsbReq_Recipient;
INT8_EXT UsbReq_Type;
INT8_EXT UsbReq_Request;
BIT_EXT REQBF_DCPRequest_dir = bFlags.value^3;
BIT_EXT REQBF_DCPRequest_EPdir = bFlags.value^4;
BIT_EXT REQBF_StallDCPRequest = bFlags.value^5;
INT16_EXT DCPXfer_wResidue;
INT8_EXT * DCPXfer_pdata;
// Bulk-Only TP Finite State Machine [One-Hot] 端点状态
INT8_EXT BDATA_SEG BOTFSMstate;
BIT_EXT BOTFSM_IDLE = BOTFSMstate^0;
BIT_EXT BOTFSM_CBWProc = BOTFSMstate^1;
BIT_EXT BOTFSM_DataIn = BOTFSMstate^2;
BIT_EXT BOTFSM_DataOut = BOTFSMstate^3;
BIT_EXT BOTFSM_CSWProc = BOTFSMstate^4;
BIT_EXT BOTFSM_CSW = BOTFSMstate^5;
BIT_EXT BOTFSM_Stall = BOTFSMstate^7;
// BOT FSM
// IDLE Stage -> CBW -> CBW Proc -> DATA OUT Stage -> CSW Proc -> CSW Stage -> IDLE
// IDLE Stage -> CBW -> CBW Proc -> DATA IN Stage -> CSW Proc -> CSW Stage -> IDLE
// STALL Stage -> IDLE
//
INT16_EXT BOTXfer_wResidue; //数据沉余
INT8_EXT * BOTXfer_pdata;
STRUC_EXT TPBLK_STRUC DATA_SEG TPBulk_Block;
#define TPBulk_CBW TPBulk_Block.TPBulk_CommandBlock
#define RBC_CDB TPBulk_CBW.cdbRBC
#define RBC_LUN TPBulk_CBW.bCBW_LUN
#define Hal4ATA_Atapi RBC_CDB
#define TPBulk_CSW TPBulk_Block.TPBulk_CommandStatus
BIT_EXT BOTXfer_Abort = bFlags.value^8;
BIT_EXT BOTBF_StallAtBulkOut = bFlags.value^6;
BIT_EXT BOTBF_StallAtBulkIn = bFlags.value^7;
// Xfer_Space
INT8_EXT BDATA_SEG Xfer_Space;
BIT_EXT DCPXfer_atMCUCODE = Xfer_Space^0;
BIT_EXT DCPXfer_atMCURAM = Xfer_Space^1;
BIT_EXT DCPXfer_atEEROM = Xfer_Space^2;
BIT_EXT DCPXfer_atATA = Xfer_Space^3;
BIT_EXT BOTXfer_atRAM = Xfer_Space^4;
BIT_EXT BOTXfer_atATA = Xfer_Space^5;
BIT_EXT BOTXfer_atROM = Xfer_Space^6;
STRUC_EXT HW_ATA_DEVICES_EXTENSION Hal4ATA_DevExt;
#define ATADevExt_IDData Hal4ATA_DevExt.IdentifyData
BIT_EXT ATABF_IsAttached = bFlags.value^9;
BIT_EXT ATABF_IsSupportMultiSector = bFlags.value^10;
BIT_EXT ATABF_IDEXfer_dir = bFlags.value^11;
BIT_EXT ATABF_IsSkipSetParameters = bFlags.value^12;
INT8_EXT Hal4ATA_SectCntInBlk;
/*
//*************************************************************************
// Public temp var
//*************************************************************************
*/
STRUC_EXT FLEXI_INT32 tempvars4UsbReq; //？？？？？？？？？？？？？？？？
INT8_EXT BDATA_SEG FlexByte;
BIT_EXT FlexByte_b0 = FlexByte^0;
BIT_EXT FlexByte_b1 = FlexByte^1;
BIT_EXT FlexByte_b2 = FlexByte^2;
BIT_EXT FlexByte_b3 = FlexByte^3;
BIT_EXT FlexByte_b4 = FlexByte^4;
BIT_EXT FlexByte_b5 = FlexByte^5;
BIT_EXT FlexByte_b6 = FlexByte^6;
BIT_EXT FlexByte_b7 = FlexByte^7;
//INT8_EXT TempByte;
/*
//*************************************************************************
// USB protocol function pointer arrays协议函数指针
//*************************************************************************
*/
code void (*StandardDeviceRequest[MAX_STD_REQUEST])(void) =
{
Chap9_GetStatus,
Chap9_ClearFeature,
MLsup_StallEP0,
Chap9_SetFeature,
MLsup_StallEP0,
Chap9_SetAddress,
Chap9_GetDescriptor,
MLsup_StallEP0,
Chap9_GetConfiguration,
Chap9_SetConfiguration,
Chap9_GetInterface,
Chap9_SetInterface,
};
code void (*ClassDeviceRequest[MAX_CLASS_REQUEST])(void) =
{
TPBulk_ResetATA,
TPBulk_GetMaxLUN
};
/*
code void (*VendorDeviceRequest[MAX_VENDOR_REQUEST])(void) =
{
MLsup_StallEP0
};
*/
/*
//*************************************************************************
// Functions
//*************************************************************************
*/
void main(void)
{
AUXR = 0x01; //使用P89C51RD2,使用内RAM和,ALE输出
RaiseIRQL(); //关中断
Hal4Sys_InitMCU(); //初始化端口
Hal4Sys_InitTimer0(); //初始化定时器0
D12SUSPD = 0; //
Hal4ATA_FindIDEDevice(); //查找IDE设备
Hal4Sys_InitD12(); //初始化D12
// Connect to USB Host
MLsup_ReconnectUSB();
// Init FSM
DCPFSMstate = USBFSM4DCP_IDLE;
BOTFSMstate = USBFSM4BOT_IDLE;// USBFSM4BOT_IDLE=0x01
LowerIRQL(); //LowerIRQL() == EA=1 , (no IRQ when EA=0!)
// USB Control Pipe
/* Main program loop */
while(TRUE)
{
// Enable Interrupt for Interrupt Type Event Stimulie
LowerIRQL(); //LowerIRQL() == EA=1 , (no IRQ when EA=0!)
// USB Control Pipe
if (DCPFSM_SetupProc) // DCPFSM_SetupProc=DCPFSMstate^0
{
RaiseIRQL(); //关中断
MLsup_USBSetupTokenHandler();
LowerIRQL(); //开中断
} // if SetupProc
// USB Bulk Pipe
RaiseIRQL();
{
if(BOTFSM_IDLE) //BOTFSM_IDLE = BOTFSMstate^0
{
Hal4Sys_D12CmdPortOutB( 0x04);// SelectEP BulkOut
FlexByte = Hal4Sys_D12DataPortInB();
if(FlexByte_b0 == 1) // BulkOut Full
TPBulk_CBWHandler(); // Goto BOTFSMstate_CBWProc
// Hal4D12_ReadLastTransactionStatus(5);
} // if BOT in IDLE
while(BOTFSM_DataOut) //BOTFSM_DataOut = BOTFSMstate^3
{
Hal4Sys_D12CmdPortOutB( 0x04);// 选择端点4
FlexByte = Hal4Sys_D12DataPortInB(); //读取端点状态
if(FlexByte_b0 == 0) // 端点为空退出
break;
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