mirror of
https://github.com/libretro/blueMSX-libretro.git
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376 lines
10 KiB
C++
376 lines
10 KiB
C++
/*****************************************************************************
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** $Source: /cygdrive/d/Private/_SVNROOT/bluemsx/blueMSX/Src/Memory/romMapperNoWind.cpp,v $
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**
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** $Revision: 1.2 $
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**
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** $Date: 2009-04-29 00:05:05 $
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**
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** More info: http://www.bluemsx.com
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**
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** Copyright (C) 2003-2006 Daniel Vik
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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**
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******************************************************************************
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*/
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#include <cstdlib>
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#include <cstring>
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#include <cstdio>
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extern "C" {
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#include <stdlib.h>
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#include "romMapperNoWind.h"
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#include "AmdFlash.h"
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#include "MediaDb.h"
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#include "SlotManager.h"
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#include "DeviceManager.h"
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#include "Board.h"
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#include "SaveState.h"
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#include "sramLoader.h"
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#include "Properties.h"
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#ifdef USE_NOWIND_DLL
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#include "Disk.h"
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#include "Properties.h"
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#include <windows.h>
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static int DeviceIds[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
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static int deviceIdAlloc()
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{
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int i;
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for (i = 0; i < sizeof(DeviceIds) / sizeof(DeviceIds[0]); ++i) {
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if (DeviceIds[i] == 0) {
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DeviceIds[i] = 1;
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return i;
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}
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}
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return -1;
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}
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static void deviceIdFree(int id)
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{
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if (id >= 0 && id < sizeof(DeviceIds) / sizeof(DeviceIds[0])) {
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DeviceIds[id] = 0;
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}
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}
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static int deviceIdCount()
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{
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int cnt = 0;
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int i;
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for (i = 0; i < sizeof(DeviceIds) / sizeof(DeviceIds[0]); ++i) {
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if (DeviceIds[i] != 0) {
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cnt++;
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}
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}
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return cnt;
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}
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typedef void (*Nowind_DebugCb)(const char*);
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#define ATTR_NONE 0
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#define ATTR_ENABLE_PHANTOM_DRIVES 1
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#define ATTR_ENABLE_OTHER_DISKROMS 2
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#define ATTR_ENABLE_DOS2 3
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typedef void (__cdecl *NoWind_StartUp)(void);
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typedef void (__cdecl *NoWind_Cleanup)(void);
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typedef bool (__cdecl *NoWind_SetImage)(int, const char*);
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typedef unsigned int (__cdecl *NoWind_SetHarddiskImage)(int, int, bool, const char*);
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typedef void (__cdecl *NoWind_Write)(unsigned char);
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typedef unsigned char (__cdecl *NoWind_Read)(void);
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typedef void (__cdecl *NoWind_SetDebugCb)(Nowind_DebugCb);
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typedef int (__cdecl *NoWind_SetAttribute)(int, bool);
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static NoWind_StartUp nowindusb_startup = NULL;
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static NoWind_Cleanup nowindusb_cleanup = NULL;
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static NoWind_SetImage nowindusb_set_image = NULL;
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static NoWind_SetHarddiskImage nowindusb_set_harddisk_image = NULL;
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static NoWind_Write nowindusb_write = NULL;
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static NoWind_Read nowindusb_read = NULL;
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static NoWind_SetDebugCb nowindusb_set_debug_callback = NULL;
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static NoWind_SetAttribute nowindusb_attribute = NULL;
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static HINSTANCE hLib = NULL;
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void nowindLoadDll()
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{
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// Load DLL.
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hLib = LoadLibrary("libnowindusbms.dll");
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if (!hLib) {
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printf("Failed to load: libnowindusbms.dll\n");
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return;
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}
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nowindusb_startup = (NoWind_StartUp) GetProcAddress(hLib, "nowindusb_startup");
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nowindusb_cleanup = (NoWind_Cleanup) GetProcAddress(hLib, "nowindusb_cleanup");
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nowindusb_set_image = (NoWind_SetImage)GetProcAddress(hLib, "nowindusb_set_image");
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nowindusb_set_harddisk_image = (NoWind_SetHarddiskImage)GetProcAddress(hLib, "nowindusb_set_harddisk_image");
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nowindusb_write = (NoWind_Write) GetProcAddress(hLib, "nowindusb_write");
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nowindusb_read = (NoWind_Read) GetProcAddress(hLib, "nowindusb_read");
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nowindusb_set_debug_callback = (NoWind_SetDebugCb) GetProcAddress(hLib, "nowindusb_set_debug_callback");
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nowindusb_attribute = (NoWind_SetAttribute) GetProcAddress(hLib, "nowindusb_attribute");
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}
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void nowindUnloadDll()
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{
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nowindusb_startup = NULL;
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nowindusb_cleanup = NULL;
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nowindusb_set_image = NULL;
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nowindusb_write = NULL;
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nowindusb_read = NULL;
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nowindusb_attribute = NULL;
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nowindusb_set_harddisk_image = NULL;
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if (hLib != NULL) {
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FreeLibrary(hLib);
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hLib = NULL;
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}
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}
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static void debugCb(const char* message)
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{
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printf(message);
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}
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#endif
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typedef struct {
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int deviceHandle;
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AmdFlash* amdFlash;
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int slot;
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int sslot;
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int startPage;
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int deviceId[4];
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UInt8 romMapper;
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UInt8* flashPage;
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} RomMapperNoWind;
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static int nowindLoaded = 0;
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#ifdef USE_NOWIND_DLL
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static void diskInsert(RomMapperNoWind* rm, int driveId, int driveNo)
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{
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NoWindProperties* prop = &propGetGlobalProperties()->nowind;
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FileProperties* disk = &propGetGlobalProperties()->media.disks[diskGetHdDriveId(driveId, driveNo)];
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int diskHasPartitionTable = 0;
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FILE* f;
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UInt8 header[512];
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f = fopen(disk->fileName, "rb");
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if (f == NULL) {
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rm->deviceId[driveNo] = -1;
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return;
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}
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rm->deviceId[driveNo] = deviceIdAlloc();
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if (rm->deviceId[driveNo] < 0) {
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fclose(f);
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return;
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}
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if (fread(header, 1, sizeof(header), f) != 0) {
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diskHasPartitionTable =
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header[510] == 0x55 &&
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header[511] == 0xaa;
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}
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fclose(f);
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if (diskHasPartitionTable) {
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if (nowindusb_set_harddisk_image) {
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nowindusb_set_harddisk_image(rm->deviceId[driveNo], prop->partitionNumber,
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prop->ignoreBootFlag != 0, disk->fileName);
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}
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}
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else {
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if (nowindusb_set_image) {
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nowindusb_set_image(rm->deviceId[driveNo], disk->fileName);
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}
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}
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}
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#endif
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static void updateMapper(RomMapperNoWind* rm, UInt8 page)
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{
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rm->romMapper = page & 0x1f;
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rm->flashPage = amdFlashGetPage(rm->amdFlash, rm->romMapper * 0x4000);
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slotMapPage(rm->slot, rm->sslot, rm->startPage + 0, NULL, 0, 0);
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slotMapPage(rm->slot, rm->sslot, rm->startPage + 1, NULL, 0, 0);
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slotMapPage(rm->slot, rm->sslot, rm->startPage + 2, rm->flashPage, 1, 0);
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slotMapPage(rm->slot, rm->sslot, rm->startPage + 3, rm->flashPage + 0x2000, 1, 0);
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slotMapPage(rm->slot, rm->sslot, rm->startPage + 4, NULL, 0, 0);
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slotMapPage(rm->slot, rm->sslot, rm->startPage + 5, rm->flashPage + 0x2000, 1, 0);
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}
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static void saveState(void* _rm)
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{
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RomMapperNoWind* rm = (RomMapperNoWind*)_rm;
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SaveState* state = saveStateOpenForWrite("mapperDumas");
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saveStateSet(state, "romMapper", rm->romMapper);
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saveStateClose(state);
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amdFlashSaveState(rm->amdFlash);
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}
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static void loadState(void* _rm)
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{
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RomMapperNoWind* rm = (RomMapperNoWind*)_rm;
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SaveState* state = saveStateOpenForRead("mapperDumas");
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rm->romMapper = (UInt8)saveStateGet(state, "romMapper", 0);
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saveStateClose(state);
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amdFlashLoadState(rm->amdFlash);
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updateMapper(rm, rm->romMapper);
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}
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static void RomMapperNoWinddestroy(void* _rm)
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{
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RomMapperNoWind* rm = (RomMapperNoWind*)_rm;
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int i;
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amdFlashDestroy(rm->amdFlash);
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#ifdef USE_NOWIND_DLL
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for (i = 0; i < 4; i++) {
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if (rm->deviceId[i] != -1) {
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deviceIdFree(rm->deviceId[i]);
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}
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}
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if (--nowindLoaded == 0) {
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if (nowindusb_cleanup) nowindusb_cleanup();
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nowindUnloadDll();
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}
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#endif
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slotUnregister(rm->slot, rm->sslot, rm->startPage);
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deviceManagerUnregister(rm->deviceHandle);
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free(rm);
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}
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static void reset(void* _rm)
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{
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RomMapperNoWind* rm = (RomMapperNoWind*)_rm;
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amdFlashReset(rm->amdFlash);
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updateMapper(rm, 0);
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}
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static UInt8 RomMapperNoWindread(RomMapperNoWind* rm, UInt16 address)
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{
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if ((address >= 0x2000 && address < 0x4000) ||
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(address >= 0x8000 && address < 0xa000))
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{
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#ifdef USE_NOWIND_DLL
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if (nowindusb_read) {
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UInt8 value = nowindusb_read();
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return value;
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}
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#endif
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}
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return 0xff;
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}
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static UInt8 RomMapperNoWindpeek(RomMapperNoWind* rm, UInt16 address)
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{
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return 0xff;
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}
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static void RomMapperNoWindwrite(RomMapperNoWind* rm, UInt16 address, UInt8 value)
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{
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if (address < 0x4000) {
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amdFlashWrite(rm->amdFlash, address + 0x4000 * rm->romMapper, value);
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return;
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}
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if ((address >= 0x4000 && address < 0x6000) ||
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(address >= 0x8000 && address < 0xa000))
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{
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#ifdef USE_NOWIND_DLL
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if (nowindusb_write) nowindusb_write(value);
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#endif
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return;
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}
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if ((address >= 0x6000 && address < 0x8000) ||
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(address >= 0xa000 && address < 0xc000))
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{
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// FIXME: Is the page selected based on address or data lines?
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updateMapper(rm, value & 0x1f);
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}
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}
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int romMapperNoWindCreate(int driveId, const char* filename, UInt8* romData,
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int size, int slot, int sslot, int startPage)
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{
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NoWindProperties* prop = &propGetGlobalProperties()->nowind;
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DeviceCallbacks callbacks = { RomMapperNoWinddestroy, reset, saveState, loadState };
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RomMapperNoWind* rm;
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int i;
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rm = (RomMapperNoWind*)malloc(sizeof(RomMapperNoWind));
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rm->deviceHandle = deviceManagerRegister(ROM_NOWIND, &callbacks, rm);
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slotRegister(slot, sslot, startPage, 6, (SlotRead)RomMapperNoWindread, (SlotRead)RomMapperNoWindpeek, (SlotWrite)RomMapperNoWindwrite, RomMapperNoWinddestroy, rm);
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if (filename == NULL) {
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filename = "nowind.rom";
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}
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rm->amdFlash = amdFlashCreate(AMD_TYPE_1, 0x80000, 0x10000, 0, romData, size, sramCreateFilenameWithSuffix(filename, "", ".rom"), 0);
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rm->slot = slot;
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rm->sslot = sslot;
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rm->startPage = startPage;
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#ifdef USE_NOWIND_DLL
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if (++nowindLoaded == 1) {
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nowindLoadDll();
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if (nowindusb_startup) nowindusb_startup();
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}
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if (nowindusb_attribute) {
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nowindusb_attribute(ATTR_ENABLE_DOS2, prop->enableDos2 != 0);
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nowindusb_attribute(ATTR_ENABLE_OTHER_DISKROMS, prop->enableOtherDiskRoms != 0);
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nowindusb_attribute(ATTR_ENABLE_PHANTOM_DRIVES, prop->enablePhantomDrives != 0);
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}
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if (nowindusb_set_debug_callback) {
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nowindusb_set_debug_callback(debugCb);
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}
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for (i = 0; i < 4; i++) {
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diskInsert(rm, driveId, i);
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}
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#endif
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reset(rm);
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return 1;
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}
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}
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