pcsx2/plugins/dev9null/DEV9.cpp

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/* DEV9null
* Copyright (C) 2002-2010 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 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.
*
* You should have received a copy of the GNU General Public License along with PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
// Note: I was using MegaDev9, dev9ghzdrk, and dev9linuz for reference on memory locations.
// The ones I included were just some of the more important ones, so you may want to look
// at the plugins I mentioned if trying to create your own dev9 plugin.
// Additionally, there is a lot of information in the ps2drv drivers by Marcus R. Brown, so
// looking through its code would be a good starting point.
// Look under tags/plugins in svn for any older plugins that aren't included in pcsx2 any more.
// --arcum42
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <string>
using namespace std;
#include "DEV9.h"
const unsigned char version = PS2E_DEV9_VERSION;
const unsigned char revision = 0;
const unsigned char build = 5; // increase that with each version
const char *libraryName = "DEV9null Driver";
// Our IRQ call.
void (*DEV9irq)(int);
__aligned16 s8 dev9regs[0x10000];
string s_strIniPath = "inis";
string s_strLogPath="logs";
PluginLog Dev9Log;
Config conf;
void LogInit()
{
const std::string LogFile(s_strLogPath + "/dev9null.log");
setLoggingState();
Dev9Log.Open(LogFile);
}
EXPORT_C_(void) DEV9setLogDir(const char* dir)
{
// Get the path to the log directory.
s_strLogPath = (dir==NULL) ? "logs" : dir;
// Reload the log file after updated the path
Dev9Log.Close();
LogInit();
}
EXPORT_C_(u32) PS2EgetLibType()
{
return PS2E_LT_DEV9;
}
EXPORT_C_(char*) PS2EgetLibName()
{
return (char *)libraryName;
}
EXPORT_C_(u32) PS2EgetLibVersion2(u32 type)
{
return (version<<16) | (revision<<8) | build;
}
EXPORT_C_(s32) DEV9init()
{
LoadConfig();
setLoggingState();
LogInit();
Dev9Log.WriteLn("dev9null plugin version %d,%d", revision, build);
Dev9Log.WriteLn("Initializing dev9null");
// Initialize anything that needs to be initialized.
memset(dev9regs, 0, sizeof(dev9regs));
return 0;
}
EXPORT_C_(void) DEV9shutdown()
{
Dev9Log.WriteLn("Shutting down Dev9null.");
Dev9Log.Close();
}
EXPORT_C_(s32) DEV9open(void *pDsp)
{
Dev9Log.WriteLn("Opening Dev9null.");
// Get anything ready we need to. Opening and creating hard
// drive files, for example.
return 0;
}
EXPORT_C_(void) DEV9close()
{
Dev9Log.WriteLn("Closing Dev9null.");
// Close files opened.
}
EXPORT_C_(u8) DEV9read8(u32 addr)
{
u8 value = 0;
switch(addr)
{
// case 0x1F80146E: // DEV9 hardware type (0x32 for an expansion bay)
case 0x10000038: /*value = dev9Ru8(addr);*/ break; // We need to have at least one case to avoid warnings.
default:
//value = dev9Ru8(addr);
Dev9Log.WriteLn("*Unknown 8 bit read at address %lx", addr);
break;
}
return value;
}
EXPORT_C_(u16) DEV9read16(u32 addr)
{
u16 value = 0;
switch(addr)
{
// Addresses you may want to catch here include:
// case 0x1F80146E: // DEV9 hardware type (0x32 for an expansion bay)
// case 0x10000002: // The Smart Chip revision. Should be 0x11
// case 0x10000004: // More type info: bit 0 - smap; bit 1 - hd; bit 5 - flash
// case 0x1000000E: // Similar to the last; bit 1 should be set if a hd is hooked up.
// case 0x10000028: // intr_stat
// case 0x10000038: // hard drives seem to like reading and writing the max dma size per transfer here.
// case 0x1000002A: // intr_mask
// case 0x10000040: // pio_data
// case 0x10000044: // nsector
// case 0x10000046: // sector
// case 0x10000048: // lcyl
// case 0x1000004A: // hcyl
// case 0x1000004C: // select
// case 0x1000004E: // status
// case 0x1000005C: // status
// case 0x10000064: // if_ctrl
case 0x10000038: /*value = dev9Ru16(addr);*/ break;
default:
//value = dev9Ru16(addr);
Dev9Log.WriteLn("*Unknown 16 bit read at address %lx", addr);
break;
}
return value;
}
EXPORT_C_(u32 ) DEV9read32(u32 addr)
{
u32 value = 0;
switch(addr)
{
case 0x10000038: /*value = dev9Ru32(addr);*/ break;
default:
//value = dev9Ru32(addr);
Dev9Log.WriteLn("*Unknown 32 bit read at address %lx", addr);
break;
}
return value;
}
EXPORT_C_(void) DEV9write8(u32 addr, u8 value)
{
switch(addr)
{
case 0x10000038: /*dev9Ru8(addr) = value;*/ break;
default:
Dev9Log.WriteLn("*Unknown 8 bit write; address %lx = %x", addr, value);
//dev9Ru8(addr) = value;
break;
}
}
EXPORT_C_(void) DEV9write16(u32 addr, u16 value)
{
switch(addr)
{
// Remember that list on DEV9read16? You'll want to write to a
// lot of them, too.
case 0x10000038: /*dev9Ru16(addr) = value;*/ break;
default:
Dev9Log.WriteLn("*Unknown 16 bit write; address %lx = %x", addr, value);
//dev9Ru16(addr) = value;
break;
}
}
EXPORT_C_(void) DEV9write32(u32 addr, u32 value)
{
switch(addr)
{
case 0x10000038: /*dev9Ru32(addr) = value;*/ break;
default:
Dev9Log.WriteLn("*Unknown 32 bit write; address %lx = %x", addr, value);
//dev9Ru32(addr) = value;
break;
}
}
//#ifdef ENABLE_NEW_IOPDMA_DEV9
EXPORT_C_(s32) DEV9dmaRead(s32 channel, u32* data, u32 bytesLeft, u32* bytesProcessed)
{
// You'll want to put your own DMA8 reading code here.
// Time to interact with your fake (or real) hardware.
Dev9Log.WriteLn("Reading DMA8 Mem.");
*bytesProcessed = bytesLeft;
return 0;
}
EXPORT_C_(s32) DEV9dmaWrite(s32 channel, u32* data, u32 bytesLeft, u32* bytesProcessed)
{
// See above.
Dev9Log.WriteLn("Writing DMA8 Mem.");
*bytesProcessed = bytesLeft;
return 0;
}
EXPORT_C_(void) DEV9dmaInterrupt(s32 channel)
{
// See above.
}
//#else
EXPORT_C_(void) DEV9readDMA8Mem(u32 *pMem, int size)
{
// You'll want to put your own DMA8 reading code here.
// Time to interact with your fake (or real) hardware.
Dev9Log.WriteLn("Reading DMA8 Mem.");
}
EXPORT_C_(void) DEV9writeDMA8Mem(u32* pMem, int size)
{
// See above.
Dev9Log.WriteLn("Writing DMA8 Mem.");
}
//#endif
EXPORT_C_(void) DEV9irqCallback(DEV9callback callback)
{
// Setting our callback. You will call it with DEV9irq(cycles),
// Where cycles is the number of cycles till the irq is triggered.
DEV9irq = callback;
}
int _DEV9irqHandler(void)
{
// And this gets called when the irq is triggered.
return 0;
}
EXPORT_C_(DEV9handler) DEV9irqHandler(void)
{
// Pass it to pcsx2.
return (DEV9handler)_DEV9irqHandler;
}
EXPORT_C_(void) DEV9setSettingsDir(const char* dir)
{
// Grab the ini directory.
s_strIniPath = (dir == NULL) ? "inis" : dir;
}
// extended funcs
EXPORT_C_(s32) DEV9test()
{
return 0;
}
EXPORT_C_(s32) DEV9freeze(int mode, freezeData *data)
{
// This should store or retrieve any information, for if emulation
// gets suspended, or for savestates.
switch(mode)
{
case FREEZE_LOAD:
// Load previously saved data.
break;
case FREEZE_SAVE:
// Save data.
break;
case FREEZE_SIZE:
// return the size of the data.
break;
}
return 0;
}
/* For operating systems that need an entry point for a dll/library, here it is. Defined in PS2Eext.h. */
ENTRY_POINT;