//**************************************************************************
//**
//**	##   ##    ##    ##   ##   ####     ####   ###     ###
//**	##   ##  ##  ##  ##   ##  ##  ##   ##  ##  ####   ####
//**	 ## ##  ##    ##  ## ##  ##    ## ##    ## ## ## ## ##
//**	 ## ##  ########  ## ##  ##    ## ##    ## ##  ###  ##
//**	  ###   ##    ##   ###    ##  ##   ##  ##  ##       ##
//**	   #    ##    ##    #      ####     ####   ##       ##
//**
//**	$Id: mplib.c,v 1.4 2002/01/07 12:16:42 dj_jl Exp $
//**
//**	Copyright (C) 1999-2002 JÆnis Legzdi·ý
//**
//**	This program is free software; you can redistribute it and/or
//**  modify it under the terms of the GNU General Public License
//**  as published by the Free Software Foundation; either version 2
//**  of the License, or (at your option) any later version.
//**
//**	This program is distributed in the hope that it will be useful,
//**  but WITHOUT ANY WARRANTY; without even the implied warranty of
//**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//**  GNU General Public License for more details.
//**
//**************************************************************************

#include <dpmi.h>

//#include "types.h"
typedef unsigned char BYTE;
typedef unsigned short WORD;
typedef unsigned long DWORD;

//#include "mgenord.h"
#define MGENVXD_REGISTER_ORD       1
#define MGENVXD_GETMEM_ORD         2
#define MGENVXD_DEREGISTER_ORD     3
#define MGENVXD_WAKEUP_ORD         4
#define MGENVXD_MAKEDQS_ORD        5


// Virtual 8086 API Ordinals
#define V86API_GETSELECTOR16_ORD (1)
#define V86API_GETSELECTOR32_ORD (2)
#define V86API_GETFLAT32_ORD (3)
#define V86API_MOVERP_ORD (6)
#define V86API_MOVEPR_ORD (7)
#define V86API_POST_ORD   (8)
#define V86API_INIT_ORD    (9)
#define V86API_UNINIT_ORD  (10)
#define V86API_INSERTKEY_ORD (11)
#define V86API_REMOVEHOTKEY_ORD  (12)
#define V86API_INSTALLHOTKEY_ORD (13)
#define V86API_HOOKINT48_ORD  (14)
#define V86API_WAKEUPDLL_ORD (15)

#define DPMIAPI_GETFLAT32_ORD (1)
#define DPMIAPI_POST_WINDOWS_ORD (2)
// these are DPMI functions.  Make sure they don't clash with the
// other MGENVXD_XXXX functions above, or the DPMI functions!
#define MGENVXD_GETQUEUECTR_ORD    6
#define MGENVXD_MOVENODE_ORD       7
#define MGENVXD_GETNODE_ORD        8
#define MGENVXD_FLUSHNODE_ORD      9
#define MGENVXD_MCOUNT_ORD         10
#define MGENVXD_MASTERNODE_ORD     11
#define MGENVXD_SANITYCHECK_ORD    12
#define MGENVXD_WAKEUPDLL_ORD       13
#define MGENVXD_WAIT_ORD           14

//
#define HWND_OFFSET (0)
#define UMSG_OFFSET (1)
#define SIZEREQUEST_OFFSET (2)
#define HVXD_OFFSET (3)
#define DATUM_OFFSET (4)
#define SLOT_OFFSET (5)
#define SIZEGIVEN_OFFSET (6)
#define SELECTOR32_OFFSET (7)
#define SELECTOR16_OFFSET (8)

//#include "magic.h"
#define MGENVXD_DEVICE_ID 0x18AA

//#include "rtq.h"
#define RTQ_NODE struct rtq_node

RTQ_NODE
   {
      RTQ_NODE *self; // Ring zero address of this node
      RTQ_NODE *left; // Ring zero address of preceding node
      RTQ_NODE *right; // Ring zero address of succeding node
      BYTE *      rtqDatum;  // Ring 3 Datum of Buffer (start of preface)
      BYTE *      rtqInsert; // Ring 3 insertion position
      WORD     rtqLen; // Length of buffer, excluding preface
      WORD     rtqUpCtr;  // Up Counter of bytes used so far
      WORD     rtqQCtr;   // number of nodes attached
      WORD     padding;   // DWORD alignment
   };

#define RTQ_PARAM_MOVENODE struct rtq_param_movenode
RTQ_PARAM_MOVENODE
   {
      WORD     rtqFromDQ;
      WORD     rtqToDQ;
   };

RTQ_NODE* rtq_fetch(RTQ_NODE*, RTQ_NODE*); // To, From

int _int86(int vector, __dpmi_regs *iregs, __dpmi_regs *oregs);

#define CHUNNEL_INT 0x48

#define int386		_int86
#define REGISTERS	__dpmi_regs

void
Yield(void)
{
	__dpmi_yield();
}

void
PostWindowsMessage(void)
{
   REGISTERS regs;

   regs.d.eax = DPMIAPI_POST_WINDOWS_ORD << 16 | MGENVXD_DEVICE_ID;
   regs.d.ebx = 0;
   regs.d.ecx = 0;
   int386(CHUNNEL_INT, &regs, &regs);
}

int
MGenWait(void)
{
   REGISTERS regs;

   regs.d.eax = MGENVXD_WAIT_ORD << 16 | MGENVXD_DEVICE_ID;
   int386(CHUNNEL_INT, &regs, &regs);
   return regs.d.eax;
}

int MGenGetQueueCtr(int qNo)
{
   REGISTERS   regs;

   regs.d.eax = MGENVXD_GETQUEUECTR_ORD << 16 | MGENVXD_DEVICE_ID;
   regs.d.ebx = qNo;
   int386(CHUNNEL_INT, &regs, &regs);

   return regs.d.eax;
}

RTQ_NODE *MGenMoveTo(int qFrom, int qTo)
{
   REGISTERS   regs;

   regs.d.eax = MGENVXD_MOVENODE_ORD << 16 | MGENVXD_DEVICE_ID;
   regs.d.ebx = qFrom;
   regs.d.ecx = qTo;
   int386(CHUNNEL_INT, &regs, &regs);

   return (RTQ_NODE *) regs.d.eax;
}

RTQ_NODE *MGenGetNode(int q)
{
   REGISTERS   regs;

   regs.d.eax = MGENVXD_GETNODE_ORD << 16 | MGENVXD_DEVICE_ID;
   regs.d.ebx = q;
   int386(CHUNNEL_INT, &regs, &regs);

   return (RTQ_NODE *) regs.d.eax;
}

RTQ_NODE *MGenGetMasterNode(unsigned *size)
{
   REGISTERS   regs;

   regs.d.eax = MGENVXD_MASTERNODE_ORD << 16 | MGENVXD_DEVICE_ID;
   int386(CHUNNEL_INT, &regs, &regs);
   *size = regs.d.ecx;

   return (RTQ_NODE *) regs.d.eax;
}

RTQ_NODE *MGenFlushNodes(int qFrom, int qTo)
{
   REGISTERS   regs;

   regs.d.eax = MGENVXD_FLUSHNODE_ORD << 16 | MGENVXD_DEVICE_ID;
   regs.d.ebx = qFrom;
   regs.d.ecx = qTo;
   int386(CHUNNEL_INT, &regs, &regs);

   return (RTQ_NODE *) regs.d.eax;
}

int MGenMCount(unsigned lowerOrderBits, unsigned upperOrderBits)
{
   REGISTERS   regs;

   regs.d.eax = MGENVXD_MCOUNT_ORD << 16 | MGENVXD_DEVICE_ID;
   regs.d.ebx = lowerOrderBits;
   regs.d.ecx = upperOrderBits;
   int386(CHUNNEL_INT, &regs, &regs);

   return regs.d.eax;
}

int MGenSanityCheck(void)
{
   REGISTERS   regs;

   regs.d.eax = MGENVXD_SANITYCHECK_ORD << 16 | MGENVXD_DEVICE_ID;
   int386(CHUNNEL_INT, &regs, &regs);

   return regs.d.eax;
}

void MGenWakeupDll(void)
{
   REGISTERS   regs;

   regs.d.eax = MGENVXD_WAKEUPDLL_ORD << 16 | MGENVXD_DEVICE_ID;
   int386(CHUNNEL_INT, &regs, &regs);
}

//**************************************************************************
//
//	$Log: mplib.c,v $
//	Revision 1.4  2002/01/07 12:16:42  dj_jl
//	Changed copyright year
//	
//	Revision 1.3  2001/07/31 17:16:31  dj_jl
//	Just moved Log to the end of file
//	
//	Revision 1.2  2001/07/27 14:27:54  dj_jl
//	Update with Id-s and Log-s, some fixes
//
//**************************************************************************
