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