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 "svnrev.h"
#include "USB.h"
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string s_strIniPath = "inis";
string s_strLogPath = "logs";
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const unsigned char version = PS2E_USB_VERSION;
const unsigned char revision = 0;
const unsigned char build = 7; // increase that with each version
#ifdef _MSC_VER
#define snprintf sprintf_s
#endif
static char libraryName[256];
USBcallback USBirq;
Config conf;
PluginLog USBLog;
s8 *usbregs, *ram;
void LogInit()
{
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const std::string LogFile(s_strLogPath + "/USBnull.log");
setLoggingState();
USBLog.Open(LogFile);
}
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EXPORT_C_(void)
USBsetLogDir(const char *dir)
{
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// Get the path to the log directory.
s_strLogPath = (dir == NULL) ? "logs" : dir;
// Reload the log file after updated the path
USBLog.Close();
LogInit();
}
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EXPORT_C_(u32)
PS2EgetLibType()
{
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return PS2E_LT_USB;
}
EXPORT_C_(char *)
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PS2EgetLibName()
{
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snprintf(libraryName, 255, "USBnull Driver %lld%s", SVN_REV, SVN_MODS ? "m" : "");
return libraryName;
}
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EXPORT_C_(u32)
PS2EgetLibVersion2(u32 type)
{
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return (version << 16) | (revision << 8) | build;
}
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EXPORT_C_(s32)
USBinit()
{
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LoadConfig();
LogInit();
USBLog.WriteLn("USBnull plugin version %d,%d", revision, build);
USBLog.WriteLn("Initializing USBnull");
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// Initialize memory structures here.
usbregs = (s8 *)calloc(0x10000, 1);
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if (usbregs == NULL) {
USBLog.Message("Error allocating memory");
return -1;
}
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return 0;
}
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EXPORT_C_(void)
USBshutdown()
{
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// Yes, we close things in the Shutdown routine, and
// don't do anything in the close routine.
USBLog.Close();
free(usbregs);
usbregs = NULL;
}
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EXPORT_C_(s32)
USBopen(void *pDsp)
{
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USBLog.WriteLn("Opening USBnull.");
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// Take care of anything else we need on opening, other then initialization.
return 0;
}
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EXPORT_C_(void)
USBclose()
{
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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.
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EXPORT_C_(u8)
USBread8(u32 addr)
{
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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;
}
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EXPORT_C_(u16)
USBread16(u32 addr)
{
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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;
}
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EXPORT_C_(u32)
USBread32(u32 addr)
{
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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;
}
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EXPORT_C_(void)
USBwrite8(u32 addr, u8 value)
{
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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);
}
}
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EXPORT_C_(void)
USBwrite16(u32 addr, u16 value)
{
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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);
}
}
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EXPORT_C_(void)
USBwrite32(u32 addr, u32 value)
{
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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);
}
}
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EXPORT_C_(void)
USBirqCallback(USBcallback callback)
{
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// 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;
}
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EXPORT_C_(int)
_USBirqHandler(void)
{
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// This is our USB irq handler, so if an interrupt gets triggered,
// deal with it here.
return 0;
}
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EXPORT_C_(USBhandler)
USBirqHandler(void)
{
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// Pass our handler to pcsx2.
return (USBhandler)_USBirqHandler;
}
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EXPORT_C_(void)
USBsetRAM(void *mem)
{
ram = (s8 *)mem;
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USBLog.WriteLn("*Setting ram.");
}
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EXPORT_C_(void)
USBsetSettingsDir(const char *dir)
{
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// Get the path to the ini directory.
s_strIniPath = (dir == NULL) ? "inis" : dir;
}
// extended funcs
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EXPORT_C_(s32)
USBfreeze(int mode, freezeData *data)
{
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// 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.
}*/
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EXPORT_C_(s32)
USBtest()
{
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// 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;