pcsx2/plugins/USBnull/USB.cpp

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/* USBnull
* 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/>.
*/
#include <stdlib.h>
#include <string>
using namespace std;
#include "USB.h"
string s_strIniPath="inis/";
string s_strLogPath="logs/";
const unsigned char version = PS2E_USB_VERSION;
const unsigned char revision = 0;
const unsigned char build = 7; // increase that with each version
static char *libraryName = "USBnull Driver";
USBcallback USBirq;
Config conf;
PluginLog USBLog;
s8 *usbregs, *ram;
void LogInit()
{
const std::string LogFile(s_strLogPath + "/USBnull.log");
setLoggingState();
USBLog.Open(LogFile);
}
EXPORT_C_(void) USBsetLogDir(const char* dir)
{
// Get the path to the log directory.
s_strLogPath = (dir==NULL) ? "logs/" : dir;
// Reload the log file after updated the path
USBLog.Close();
LogInit();
}
EXPORT_C_(u32) PS2EgetLibType()
{
return PS2E_LT_USB;
}
EXPORT_C_(char*) PS2EgetLibName()
{
return libraryName;
}
EXPORT_C_(u32) PS2EgetLibVersion2(u32 type)
{
return (version << 16) | (revision << 8) | build;
}
EXPORT_C_(s32) USBinit()
{
LoadConfig();
LogInit();
USBLog.WriteLn("USBnull plugin version %d,%d", revision, build);
USBLog.WriteLn("Initializing USBnull");
// Initialize memory structures here.
usbregs = (s8*)calloc(0x10000, 1);
if (usbregs == NULL)
{
USBLog.Message("Error allocating memory");
return -1;
}
return 0;
}
EXPORT_C_(void) USBshutdown()
{
// Yes, we close things in the Shutdown routine, and
// don't do anything in the close routine.
USBLog.Close();
free(usbregs);
usbregs = NULL;
}
EXPORT_C_(s32) USBopen(void *pDsp)
{
USBLog.WriteLn("Opening USBnull.");
// Take care of anything else we need on opening, other then initialization.
return 0;
}
EXPORT_C_(void) USBclose()
{
USBLog.WriteLn("Closing USBnull.");
}
// Note: actually uncommenting the read/write functions I provided here
// caused uLauncher.elf to hang on startup, so careful when experimenting.
EXPORT_C_(u8) USBread8(u32 addr)
{
u8 value = 0;
switch(addr)
{
// Handle any appropriate addresses here.
case 0x1f801600:
USBLog.WriteLn("(USBnull) 8 bit read at address %lx", addr);
break;
default:
//value = usbRu8(addr);
USBLog.WriteLn("*(USBnull) 8 bit read at address %lx", addr);
break;
}
return value;
}
EXPORT_C_(u16) USBread16(u32 addr)
{
u16 value = 0;
switch(addr)
{
// Handle any appropriate addresses here.
case 0x1f801600:
USBLog.WriteLn("(USBnull) 16 bit read at address %lx", addr);
break;
default:
//value = usbRu16(addr);
USBLog.WriteLn("(USBnull) 16 bit read at address %lx", addr);
}
return value;
}
EXPORT_C_(u32) USBread32(u32 addr)
{
u32 value = 0;
switch(addr)
{
// Handle any appropriate addresses here.
case 0x1f801600:
USBLog.WriteLn("(USBnull) 32 bit read at address %lx", addr);
break;
default:
//value = usbRu32(addr);
USBLog.WriteLn("(USBnull) 32 bit read at address %lx", addr);
}
return value;
}
EXPORT_C_(void) USBwrite8(u32 addr, u8 value)
{
switch(addr)
{
// Handle any appropriate addresses here.
case 0x1f801600:
USBLog.WriteLn("(USBnull) 8 bit write at address %lx value %x", addr, value);
break;
default:
//usbRu8(addr) = value;
USBLog.WriteLn("(USBnull) 8 bit write at address %lx value %x", addr, value);
}
}
EXPORT_C_(void) USBwrite16(u32 addr, u16 value)
{
switch(addr)
{
// Handle any appropriate addresses here.
case 0x1f801600:
USBLog.WriteLn("(USBnull) 16 bit write at address %lx value %x", addr, value);
break;
default:
//usbRu16(addr) = value;
USBLog.WriteLn("(USBnull) 16 bit write at address %lx value %x", addr, value);
}
}
EXPORT_C_(void) USBwrite32(u32 addr, u32 value)
{
switch(addr)
{
// Handle any appropriate addresses here.
case 0x1f801600:
USBLog.WriteLn("(USBnull) 16 bit write at address %lx value %x", addr, value);
break;
default:
//usbRu32(addr) = value;
USBLog.WriteLn("(USBnull) 32 bit write at address %lx value %x", addr, value);
}
}
EXPORT_C_(void) USBirqCallback(USBcallback callback)
{
// Register USBirq, so we can trigger an interrupt with it later.
// It will be called as USBirq(cycles); where cycles is the number
// of cycles before the irq is triggered.
USBirq = callback;
}
EXPORT_C_(int) _USBirqHandler(void)
{
// This is our USB irq handler, so if an interrupt gets triggered,
// deal with it here.
return 0;
}
EXPORT_C_(USBhandler) USBirqHandler(void)
{
// Pass our handler to pcsx2.
return (USBhandler)_USBirqHandler;
}
EXPORT_C_(void) USBsetRAM(void *mem)
{
ram = (s8*)mem;
USBLog.WriteLn("*Setting ram.");
}
EXPORT_C_(void) USBsetSettingsDir(const char* dir)
{
// Get the path to the ini directory.
s_strIniPath = (dir==NULL) ? "inis/" : dir;
}
// extended funcs
EXPORT_C_(s32) USBfreeze(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;
}
/*EXPORT_C_(void) USBasync(u32 cycles)
{
// Optional function: Called in IopCounter.cpp.
}*/
EXPORT_C_(s32) USBtest()
{
// 0 if the plugin works, non-0 if it doesn't.
return 0;
}
/* For operating systems that need an entry point for a dll/library, here it is. Defined in PS2Eext.h. */
ENTRY_POINT;