/* FWnull
* Copyright (C) 2004-2010 PCSX2 Dev Team
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdlib.h>
#include <string>
using namespace std;
#include "FW.h"
#include "svnrev.h"
#include "null/config.inl"
const u8 version = PS2E_FW_VERSION;
const u8 revision = 0;
const u8 build = 7; // increase that with each version
static char libraryName[256];
string s_strIniPath = "inis";
string s_strLogPath = "logs";
u8 phyregs[16];
s8 *fwregs;
void (*FWirq)();
EXPORT_C_(void)
FWconfigure()
{
const std::string ini_path = s_strIniPath + "/FWnull.ini";
LoadConfig(ini_path);
ConfigureLogging();
SaveConfig(ini_path);
}
void LogInit()
{
const std::string LogFile(s_strLogPath + "/FWnull.log");
g_plugin_log.Open(LogFile);
}
EXPORT_C_(void)
FWsetLogDir(const char *dir)
{
// Get the path to the log directory.
s_strLogPath = (dir == NULL) ? "logs" : dir;
// Reload the log file after updated the path
g_plugin_log.Close();
LogInit();
}
EXPORT_C_(u32)
PS2EgetLibType()
{
return PS2E_LT_FW;
}
EXPORT_C_(const char *)
PS2EgetLibName()
{
snprintf(libraryName, 255, "FWnull Driver %lld%s", SVN_REV, SVN_MODS ? "m" : "");
return libraryName;
}
EXPORT_C_(u32)
PS2EgetLibVersion2(u32 type)
{
return (version << 16) | (revision << 8) | build;
}
EXPORT_C_(s32)
FWinit()
{
LoadConfig(s_strIniPath + "/FWnull.ini");
LogInit();
g_plugin_log.WriteLn("FWnull plugin version %d,%d", revision, build);
g_plugin_log.WriteLn("Initializing FWnull");
memset(phyregs, 0, sizeof(phyregs));
// Initializing our registers.
fwregs = (s8 *)calloc(0x10000, 1);
if (fwregs == NULL) {
g_plugin_log.Message("Error allocating Memory");
return -1;
}
return 0;
}
EXPORT_C_(void)
FWshutdown()
{
// Freeing the registers.
free(fwregs);
fwregs = NULL;
g_plugin_log.Close();
}
EXPORT_C_(s32)
FWopen(void *pDsp)
{
g_plugin_log.WriteLn("Opening FWnull.");
return 0;
}
EXPORT_C_(void)
FWclose()
{
// Close the plugin.
g_plugin_log.WriteLn("Closing FWnull.");
}
void PHYWrite()
{
u8 reg = (PHYACC >> 8) & 0xf;
u8 data = PHYACC & 0xff;
phyregs[reg] = data;
PHYACC &= ~0x4000ffff;
}
void PHYRead()
{
u8 reg = (PHYACC >> 24) & 0xf;
PHYACC &= ~0x80000000;
PHYACC |= phyregs[reg] | (reg << 8);
if (fwRu32(0x8424) & 0x40000000) //RRx interrupt mask
{
fwRu32(0x8420) |= 0x40000000;
FWirq();
}
}
EXPORT_C_(u32)
FWread32(u32 addr)
{
u32 ret = 0;
switch (addr) {
//Node ID Register the top part is default, bottom part i got from my ps2
case 0x1f808400:
ret = /*(0x3ff << 22) | 1;*/ 0xffc00001;
break;
// Control Register 2
case 0x1f808410:
ret = fwRu32(addr); //SCLK OK (Needs to be set when FW is "Ready"
break;
//Interrupt 0 Register
case 0x1f808420:
ret = fwRu32(addr);
break;
//Dunno what this is, but my home console always returns this value 0x10000001
//Seems to be related to the Node ID however (does some sort of compare/check)
case 0x1f80847c:
ret = 0x10000001;
break;
// Include other relevant 32 bit addresses we need to catch here.
default:
// By default, read fwregs.
ret = fwRu32(addr);
break;
}
g_plugin_log.WriteLn("FW read mem 0x%x: 0x%x", addr, ret);
return ret;
}
EXPORT_C_(void)
FWwrite32(u32 addr, u32 value)
{
switch (addr) {
// Include other memory locations we want to catch here.
// For example:
//
// case 0x1f808400:
// case 0x1f808414:
// case 0x1f808420:
// case 0x1f808428:
// case 0x1f808430:
//
//PHY access
case 0x1f808414:
//If in read mode (top bit set) we read the PHY register requested then set the RRx interrupt if it's enabled
//Im presuming we send that back to pcsx2 then. This register stores the result, plus whatever was written (minus the read/write flag
fwRu32(addr) = value; //R/W Bit cleaned in underneath function
if (value & 0x40000000) //Writing to PHY
{
PHYWrite();
} else if (value & 0x80000000) //Reading from PHY
{
PHYRead();
}
break;
//Control Register 0
case 0x1f808408:
//This enables different functions of the link interface
//Just straight writes, should brobably struct these later.
//Default written settings (on unreal tournament) are
//Urcv M = 1
//RSP 0 = 1
//Retlim = 0xF
//Cyc Tmr En = 1
//Bus ID Rst = 1
//Rcv Self ID = 1
fwRu32(addr) = value;
// if((value & 0x800000) && (fwRu32(0x842C) & 0x2))
// {
// fwRu32(0x8428) |= 0x2;
// FWirq();
// }
fwRu32(addr) &= ~0x800000;
break;
//Control Register 2
case 0x1f808410: // fwRu32(addr) = value; break;
//Ignore writes to this for now, apart from 0x2 which is Link Power Enable
//0x8 is SCLK OK (Ready) which should be set for emulation
fwRu32(addr) = 0x8 /*| value & 0x2*/;
break;
//Interrupt 0 Register
case 0x1f808420:
//Interrupt 1 Register
case 0x1f808428:
//Interrupt 2 Register
case 0x1f808430:
//Writes of 1 clear the corresponding bits
fwRu32(addr) &= ~value;
break;
//Interrupt 0 Register Mask
case 0x1f808424:
//Interrupt 1 Register Mask
case 0x1f80842C:
//Interrupt 2 Register Mask
case 0x1f808434:
//These are direct writes (as it's a mask!)
fwRu32(addr) = value;
break;
//DMA Control and Status Register 0
case 0x1f8084B8:
fwRu32(addr) = value;
break;
//DMA Control and Status Register 1
case 0x1f808538:
fwRu32(addr) = value;
break;
default:
// By default, just write it to fwregs.
fwRu32(addr) = value;
break;
}
g_plugin_log.WriteLn("FW write mem 0x%x: 0x%x", addr, value);
}
EXPORT_C_(void)
FWirqCallback(void (*callback)())
{
// Register FWirq, so we can trigger an interrupt with it later.
FWirq = callback;
}
EXPORT_C_(void)
FWsetSettingsDir(const char *dir)
{
// Find out from pcsx2 where we are supposed to put our ini file.
s_strIniPath = (dir == NULL) ? "inis" : dir;
}
EXPORT_C_(s32)
FWfreeze(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_(s32)
FWtest()
{
// 0 if the plugin works, non-0 if it doesn't.
return 0;
}