diff options
Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/pm/smx/pmsmx.c')
-rw-r--r-- | board/MAI/bios_emulator/scitech/src/pm/smx/pmsmx.c | 471 |
1 files changed, 0 insertions, 471 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/smx/pmsmx.c b/board/MAI/bios_emulator/scitech/src/pm/smx/pmsmx.c deleted file mode 100644 index 98e31bc63..000000000 --- a/board/MAI/bios_emulator/scitech/src/pm/smx/pmsmx.c +++ /dev/null @@ -1,471 +0,0 @@ -/**************************************************************************** -* -* SciTech OS Portability Manager Library -* -* ======================================================================== -* -* The contents of this file are subject to the SciTech MGL Public -* License Version 1.0 (the "License"); you may not use this file -* except in compliance with the License. You may obtain a copy of -* the License at http://www.scitechsoft.com/mgl-license.txt -* -* Software distributed under the License is distributed on an -* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or -* implied. See the License for the specific language governing -* rights and limitations under the License. -* -* The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc. -* -* The Initial Developer of the Original Code is SciTech Software, Inc. -* All Rights Reserved. -* -* ======================================================================== -* -* Language: ANSI C -* Environment: 32-bit SMX embedded systems development -* -* Description: Implementation for the OS Portability Manager Library, which -* contains functions to implement OS specific services in a -* generic, cross platform API. Porting the OS Portability -* Manager library is the first step to porting any SciTech -* products to a new platform. -* -****************************************************************************/ - -#include "pmapi.h" -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <dos.h> -#include "smx/ps2mouse.h" - -/*--------------------------- Global variables ----------------------------*/ - -static int globalDataStart; - -PM_criticalHandler _VARAPI _PM_critHandler = NULL; -PM_breakHandler _VARAPI _PM_breakHandler = NULL; -PM_intHandler _VARAPI _PM_timerHandler = NULL; -PM_intHandler _VARAPI _PM_rtcHandler = NULL; -PM_intHandler _VARAPI _PM_keyHandler = NULL; -PM_key15Handler _VARAPI _PM_key15Handler = NULL; -PM_mouseHandler _VARAPI _PM_mouseHandler = NULL; -PM_intHandler _VARAPI _PM_int10Handler = NULL; -int _VARAPI _PM_mouseMask; - -uchar * _VARAPI _PM_ctrlCPtr; /* Location of Ctrl-C flag */ -uchar * _VARAPI _PM_ctrlBPtr; /* Location of Ctrl-Break flag */ -uchar * _VARAPI _PM_critPtr; /* Location of Critical error Bf*/ -PMFARPTR _VARAPI _PM_prevTimer = PMNULL; /* Previous timer handler */ -PMFARPTR _VARAPI _PM_prevRTC = PMNULL; /* Previous RTC handler */ -PMFARPTR _VARAPI _PM_prevKey = PMNULL; /* Previous key handler */ -PMFARPTR _VARAPI _PM_prevKey15 = PMNULL; /* Previous key15 handler */ -PMFARPTR _VARAPI _PM_prevBreak = PMNULL; /* Previous break handler */ -PMFARPTR _VARAPI _PM_prevCtrlC = PMNULL; /* Previous CtrlC handler */ -PMFARPTR _VARAPI _PM_prevCritical = PMNULL; /* Previous critical handler */ -long _VARAPI _PM_prevRealTimer; /* Previous real mode timer */ -long _VARAPI _PM_prevRealRTC; /* Previous real mode RTC */ -long _VARAPI _PM_prevRealKey; /* Previous real mode key */ -long _VARAPI _PM_prevRealKey15; /* Previous real mode key15 */ -long _VARAPI _PM_prevRealInt10; /* Previous real mode int 10h */ -static uchar _PM_oldCMOSRegA; /* CMOS register A contents */ -static uchar _PM_oldCMOSRegB; /* CMOS register B contents */ -static uchar _PM_oldRTCPIC2; /* Mask value for RTC IRQ8 */ - -/*----------------------------- Implementation ----------------------------*/ - -/* Globals for locking interrupt handlers in _pmsmx.asm */ - -extern int _ASMAPI _PM_pmsmxDataStart; -extern int _ASMAPI _PM_pmsmxDataEnd; -void _ASMAPI _PM_pmsmxCodeStart(void); -void _ASMAPI _PM_pmsmxCodeEnd(void); - -/* Protected mode interrupt handlers, also called by PM callbacks below */ - -void _ASMAPI _PM_timerISR(void); -void _ASMAPI _PM_rtcISR(void); -void _ASMAPI _PM_keyISR(void); -void _ASMAPI _PM_key15ISR(void); -void _ASMAPI _PM_breakISR(void); -void _ASMAPI _PM_ctrlCISR(void); -void _ASMAPI _PM_criticalISR(void); -void _ASMAPI _PM_mouseISR(void); -void _ASMAPI _PM_int10PMCB(void); - -/* Protected mode DPMI callback handlers */ - -void _ASMAPI _PM_mousePMCB(void); - -/* Routine to install a mouse handler function */ - -void _ASMAPI _PM_setMouseHandler(int mask); - -/* Routine to allocate DPMI real mode callback routines */ - -void _ASMAPI _DPMI_allocateCallback(void (_ASMAPI *pmcode)(),void *rmregs,long *RMCB); -void _ASMAPI _DPMI_freeCallback(long RMCB); - -/* DPMI helper functions in PMLITE.C */ - -ulong PMAPI DPMI_mapPhysicalToLinear(ulong physAddr,ulong limit); -int PMAPI DPMI_setSelectorBase(ushort sel,ulong linAddr); -ulong PMAPI DPMI_getSelectorBase(ushort sel); -int PMAPI DPMI_setSelectorLimit(ushort sel,ulong limit); -uint PMAPI DPMI_createSelector(ulong base,ulong limit); -void PMAPI DPMI_freeSelector(uint sel); -int PMAPI DPMI_lockLinearPages(ulong linear,ulong len); -int PMAPI DPMI_unlockLinearPages(ulong linear,ulong len); - -/* Functions to read and write CMOS registers */ - -uchar PMAPI _PM_readCMOS(int index); -void PMAPI _PM_writeCMOS(int index,uchar value); - -/*-------------------------------------------------------------------------*/ -/* Generic routines common to all environments */ -/*-------------------------------------------------------------------------*/ - -void PMAPI PM_resetMouseDriver(int hardReset) -{ - ps2MouseReset(); -} - -void PMAPI PM_setRealTimeClockFrequency(int frequency) -{ - static short convert[] = { - 8192, - 4096, - 2048, - 1024, - 512, - 256, - 128, - 64, - 32, - 16, - 8, - 4, - 2, - -1, - }; - int i; - - /* First clear any pending RTC timeout if not cleared */ - _PM_readCMOS(0x0C); - if (frequency == 0) { - /* Disable RTC timout */ - _PM_writeCMOS(0x0A,_PM_oldCMOSRegA); - _PM_writeCMOS(0x0B,_PM_oldCMOSRegB & 0x0F); - } - else { - /* Convert frequency value to RTC clock indexes */ - for (i = 0; convert[i] != -1; i++) { - if (convert[i] == frequency) - break; - } - - /* Set RTC timout value and enable timeout */ - _PM_writeCMOS(0x0A,(_PM_oldCMOSRegA & 0xF0) | (i+3)); - _PM_writeCMOS(0x0B,(_PM_oldCMOSRegB & 0x0F) | 0x40); - } -} - -static void PMAPI lockPMHandlers(void) -{ - static int locked = 0; - int stat = 0; - PM_lockHandle lh; - - /* Lock all of the code and data used by our protected mode interrupt - * handling routines, so that it will continue to work correctly - * under real mode. - */ - if (!locked) { - PM_saveDS(); - stat = !PM_lockDataPages(&globalDataStart-2048,4096,&lh); - stat |= !PM_lockDataPages(&_PM_pmsmxDataStart,(int)&_PM_pmsmxDataEnd - (int)&_PM_pmsmxDataStart,&lh); - stat |= !PM_lockCodePages((__codePtr)_PM_pmsmxCodeStart,(int)_PM_pmsmxCodeEnd-(int)_PM_pmsmxCodeStart,&lh); - if (stat) { - printf("Page locking services failed - interrupt handling not safe!\n"); - exit(1); - } - locked = 1; - } -} - -void PMAPI PM_getPMvect(int intno, PMFARPTR *isr) -{ - PMREGS regs; - - regs.x.ax = 0x204; - regs.h.bl = intno; - PM_int386(0x31,®s,®s); - isr->sel = regs.x.cx; - isr->off = regs.e.edx; -} - -void PMAPI PM_setPMvect(int intno, PM_intHandler isr) -{ - PMSREGS sregs; - PMREGS regs; - - PM_saveDS(); - regs.x.ax = 0x205; /* Set protected mode vector */ - regs.h.bl = intno; - PM_segread(&sregs); - regs.x.cx = sregs.cs; - regs.e.edx = (uint)isr; - PM_int386(0x31,®s,®s); -} - -void PMAPI PM_restorePMvect(int intno, PMFARPTR isr) -{ - PMREGS regs; - - regs.x.ax = 0x205; - regs.h.bl = intno; - regs.x.cx = isr.sel; - regs.e.edx = isr.off; - PM_int386(0x31,®s,®s); -} - -static long prevRealBreak; /* Previous real mode break handler */ -static long prevRealCtrlC; /* Previous real mode CtrlC handler */ -static long prevRealCritical; /* Prev real mode critical handler */ - -int PMAPI PM_setMouseHandler(int mask, PM_mouseHandler mh) -{ - lockPMHandlers(); /* Ensure our handlers are locked */ - - _PM_mouseHandler = mh; - return 0; -} - -void PMAPI PM_restoreMouseHandler(void) -{ - if (_PM_mouseHandler) - _PM_mouseHandler = NULL; -} - -static void getISR(int intno, PMFARPTR *pmisr, long *realisr) -{ - PM_getPMvect(intno,pmisr); -} - -static void restoreISR(int intno, PMFARPTR pmisr, long realisr) -{ - PM_restorePMvect(intno,pmisr); -} - -static void setISR(int intno, void (* PMAPI pmisr)()) -{ - lockPMHandlers(); /* Ensure our handlers are locked */ - PM_setPMvect(intno,pmisr); -} - -void PMAPI PM_setTimerHandler(PM_intHandler th) -{ - getISR(PM_IRQ0, &_PM_prevTimer, &_PM_prevRealTimer); - _PM_timerHandler = th; - setISR(PM_IRQ0, _PM_timerISR); -} - -void PMAPI PM_restoreTimerHandler(void) -{ - if (_PM_timerHandler) { - restoreISR(PM_IRQ0, _PM_prevTimer, _PM_prevRealTimer); - _PM_timerHandler = NULL; - } -} - -ibool PMAPI PM_setRealTimeClockHandler(PM_intHandler th,int frequency) -{ - /* Save the old CMOS real time clock values */ - _PM_oldCMOSRegA = _PM_readCMOS(0x0A); - _PM_oldCMOSRegB = _PM_readCMOS(0x0B); - - /* Set the real time clock interrupt handler */ - getISR(0x70, &_PM_prevRTC, &_PM_prevRealRTC); - _PM_rtcHandler = th; - setISR(0x70, _PM_rtcISR); - - /* Program the real time clock default frequency */ - PM_setRealTimeClockFrequency(frequency); - - /* Unmask IRQ8 in the PIC2 */ - _PM_oldRTCPIC2 = PM_inpb(0xA1); - PM_outpb(0xA1,_PM_oldRTCPIC2 & 0xFE); - return true; -} - -void PMAPI PM_restoreRealTimeClockHandler(void) -{ - if (_PM_rtcHandler) { - /* Restore CMOS registers and mask RTC clock */ - _PM_writeCMOS(0x0A,_PM_oldCMOSRegA); - _PM_writeCMOS(0x0B,_PM_oldCMOSRegB); - PM_outpb(0xA1,(PM_inpb(0xA1) & 0xFE) | (_PM_oldRTCPIC2 & ~0xFE)); - - /* Restore the interrupt vector */ - restoreISR(0x70, _PM_prevRTC, _PM_prevRealRTC); - _PM_rtcHandler = NULL; - } -} - -void PMAPI PM_setKeyHandler(PM_intHandler kh) -{ - getISR(PM_IRQ1, &_PM_prevKey, &_PM_prevRealKey); - _PM_keyHandler = kh; - setISR(PM_IRQ1, _PM_keyISR); -} - -void PMAPI PM_restoreKeyHandler(void) -{ - if (_PM_keyHandler) { - restoreISR(PM_IRQ1, _PM_prevKey, _PM_prevRealKey); - _PM_keyHandler = NULL; - } -} - -void PMAPI PM_setKey15Handler(PM_key15Handler kh) -{ - getISR(0x15, &_PM_prevKey15, &_PM_prevRealKey15); - _PM_key15Handler = kh; - setISR(0x15, _PM_key15ISR); -} - -void PMAPI PM_restoreKey15Handler(void) -{ - if (_PM_key15Handler) { - restoreISR(0x15, _PM_prevKey15, _PM_prevRealKey15); - _PM_key15Handler = NULL; - } -} - -/* Real mode Ctrl-C and Ctrl-Break handler. This handler simply sets a - * flag in the real mode code segment and exit. We save the location - * of this flag in real mode memory so that both the real mode and - * protected mode code will be modifying the same flags. - */ - -static uchar ctrlHandler[] = { - 0x00,0x00,0x00,0x00, /* ctrlBFlag */ - 0x66,0x2E,0xC7,0x06,0x00,0x00, - 0x01,0x00,0x00,0x00, /* mov [cs:ctrlBFlag],1 */ - 0xCF, /* iretf */ - }; - -void PMAPI PM_installAltBreakHandler(PM_breakHandler bh) -{ - uint rseg,roff; - - getISR(0x1B, &_PM_prevBreak, &prevRealBreak); - getISR(0x23, &_PM_prevCtrlC, &prevRealCtrlC); - _PM_breakHandler = bh; - setISR(0x1B, _PM_breakISR); - setISR(0x23, _PM_ctrlCISR); - - /* Hook the real mode vectors for these handlers, as these are not - * normally reflected by the DPMI server up to protected mode - */ - _PM_ctrlBPtr = PM_allocRealSeg(sizeof(ctrlHandler)*2, &rseg, &roff); - memcpy(_PM_ctrlBPtr,ctrlHandler,sizeof(ctrlHandler)); - memcpy(_PM_ctrlBPtr+sizeof(ctrlHandler),ctrlHandler,sizeof(ctrlHandler)); - _PM_ctrlCPtr = _PM_ctrlBPtr + sizeof(ctrlHandler); - _PM_setRMvect(0x1B,((long)rseg << 16) | (roff+4)); - _PM_setRMvect(0x23,((long)rseg << 16) | (roff+sizeof(ctrlHandler)+4)); -} - -void PMAPI PM_installBreakHandler(void) -{ - PM_installAltBreakHandler(NULL); -} - -void PMAPI PM_restoreBreakHandler(void) -{ - if (_PM_prevBreak.sel) { - restoreISR(0x1B, _PM_prevBreak, prevRealBreak); - restoreISR(0x23, _PM_prevCtrlC, prevRealCtrlC); - _PM_prevBreak.sel = 0; - _PM_breakHandler = NULL; - PM_freeRealSeg(_PM_ctrlBPtr); - } -} - -/* Real mode Critical Error handler. This handler simply saves the AX and - * DI values in the real mode code segment and exits. We save the location - * of this flag in real mode memory so that both the real mode and - * protected mode code will be modifying the same flags. - */ - -static uchar criticalHandler[] = { - 0x00,0x00, /* axCode */ - 0x00,0x00, /* diCode */ - 0x2E,0xA3,0x00,0x00, /* mov [cs:axCode],ax */ - 0x2E,0x89,0x3E,0x02,0x00, /* mov [cs:diCode],di */ - 0xB8,0x03,0x00, /* mov ax,3 */ - 0xCF, /* iretf */ - }; - -void PMAPI PM_installAltCriticalHandler(PM_criticalHandler ch) -{ - uint rseg,roff; - - getISR(0x24, &_PM_prevCritical, &prevRealCritical); - _PM_critHandler = ch; - setISR(0x24, _PM_criticalISR); - - /* Hook the real mode vector, as this is not normally reflected by the - * DPMI server up to protected mode. - */ - _PM_critPtr = PM_allocRealSeg(sizeof(criticalHandler)*2, &rseg, &roff); - memcpy(_PM_critPtr,criticalHandler,sizeof(criticalHandler)); - _PM_setRMvect(0x24,((long)rseg << 16) | (roff+4)); -} - -void PMAPI PM_installCriticalHandler(void) -{ - PM_installAltCriticalHandler(NULL); -} - -void PMAPI PM_restoreCriticalHandler(void) -{ - if (_PM_prevCritical.sel) { - restoreISR(0x24, _PM_prevCritical, prevRealCritical); - PM_freeRealSeg(_PM_critPtr); - _PM_prevCritical.sel = 0; - _PM_critHandler = NULL; - } -} - -int PMAPI PM_lockDataPages(void *p,uint len,PM_lockHandle *lh) -{ - PMSREGS sregs; - PM_segread(&sregs); - return DPMI_lockLinearPages((uint)p + DPMI_getSelectorBase(sregs.ds),len); -} - -int PMAPI PM_unlockDataPages(void *p,uint len,PM_lockHandle *lh) -{ - PMSREGS sregs; - PM_segread(&sregs); - return DPMI_unlockLinearPages((uint)p + DPMI_getSelectorBase(sregs.ds),len); -} - -int PMAPI PM_lockCodePages(void (*p)(),uint len,PM_lockHandle *lh) -{ - PMSREGS sregs; - PM_segread(&sregs); -/*AM: causes minor glitch with */ -/*AM: older versions pmEasy which don't allow DPMI 06 on */ -/*AM: Code selector 0x0C -- assume base is 0 which it should be. */ - return DPMI_lockLinearPages((uint)p,len); -} - -int PMAPI PM_unlockCodePages(void (*p)(),uint len,PM_lockHandle *lh) -{ - PMSREGS sregs; - PM_segread(&sregs); - return DPMI_unlockLinearPages((uint)p,len); -} |