250 lines
6.9 KiB
C++
250 lines
6.9 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2003-2009 The Bochs Project
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library 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 GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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//
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// Standard PC gameport
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//
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// Define BX_PLUGGABLE in files that can be compiled into plugins. For
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// platforms that require a special tag on exported symbols, BX_PLUGGABLE
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// is used to know when we are exporting symbols and when we are importing.
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#define BX_PLUGGABLE
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#include "iodev.h"
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#include "gameport.h"
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#ifdef __linux__
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#include <linux/joystick.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdio.h>
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#elif defined(WIN32)
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#ifndef JOY_BUTTON1
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#define JOY_BUTTON1 1
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#define JOY_BUTTON2 2
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UINT STDCALL joyGetPos(UINT, LPJOYINFO);
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#endif
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#define JOYSTICKID1 0
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#endif
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#define LOG_THIS theGameport->
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bx_gameport_c *theGameport = NULL;
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int libgameport_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
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{
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theGameport = new bx_gameport_c();
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bx_devices.pluginGameport = theGameport;
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BX_REGISTER_DEVICE_DEVMODEL(plugin, type, theGameport, BX_PLUGIN_GAMEPORT);
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return(0); // Success
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}
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void libgameport_LTX_plugin_fini(void)
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{
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bx_devices.pluginGameport = &bx_devices.stubGameport;
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delete theGameport;
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}
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bx_gameport_c::bx_gameport_c()
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{
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put("gameport", "GAME");
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joyfd = -1;
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}
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bx_gameport_c::~bx_gameport_c()
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{
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if (joyfd >= 0) close(joyfd);
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SIM->get_bochs_root()->remove("gameport");
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BX_DEBUG(("Exit"));
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}
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void bx_gameport_c::init(void)
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{
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// Allocate the gameport IO address range 0x200..0x207
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for (unsigned addr=0x200; addr<0x208; addr++) {
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DEV_register_ioread_handler(this, read_handler, addr, "Gameport", 1);
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DEV_register_iowrite_handler(this, write_handler, addr, "Gameport", 1);
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}
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// always enabled unless controlled by external device
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BX_GAMEPORT_THIS enabled = 1;
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BX_GAMEPORT_THIS port = 0xf0;
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BX_GAMEPORT_THIS write_usec = 0;
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BX_GAMEPORT_THIS timer_x = 0;
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BX_GAMEPORT_THIS timer_y = 0;
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#ifdef __linux__
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BX_GAMEPORT_THIS joyfd = open("/dev/input/js0", O_RDONLY);
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if (BX_GAMEPORT_THIS joyfd >= 0) {
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for (unsigned i=0; i<4; i++) poll_joydev();
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}
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#elif defined(WIN32)
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JOYINFO joypos;
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if (joyGetPos(JOYSTICKID1, &joypos) == JOYERR_NOERROR) {
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BX_GAMEPORT_THIS joyfd = 1;
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} else {
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BX_GAMEPORT_THIS joyfd = -1;
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}
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#else
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BX_GAMEPORT_THIS joyfd = -1;
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#endif
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}
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void bx_gameport_c::reset(unsigned type)
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{
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// nothing for now
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}
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void bx_gameport_c::register_state(void)
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{
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bx_list_c *list = new bx_list_c(SIM->get_bochs_root(), "gameport", "Gameport State");
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BXRS_PARAM_BOOL(list, enabled, BX_GAMEPORT_THIS enabled);
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BXRS_HEX_PARAM_FIELD(list, port, BX_GAMEPORT_THIS port);
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BXRS_DEC_PARAM_FIELD(list, delay_x, BX_GAMEPORT_THIS delay_x);
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BXRS_DEC_PARAM_FIELD(list, delay_y, BX_GAMEPORT_THIS delay_y);
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BXRS_PARAM_BOOL(list, timer_x, BX_GAMEPORT_THIS timer_x);
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BXRS_PARAM_BOOL(list, timer_y, BX_GAMEPORT_THIS timer_y);
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BXRS_DEC_PARAM_FIELD(list, write_usec, BX_GAMEPORT_THIS write_usec);
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}
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void bx_gameport_c::poll_joydev(void)
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{
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#ifdef __linux__
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struct js_event e;
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fd_set joyfds;
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struct timeval tv;
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memset(&tv, 0, sizeof(tv));
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FD_ZERO(&joyfds);
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FD_SET(BX_GAMEPORT_THIS joyfd, &joyfds);
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e.type = 0;
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if (select(BX_GAMEPORT_THIS joyfd+1, &joyfds, NULL, NULL, &tv)) {
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read(BX_GAMEPORT_THIS joyfd, &e, sizeof(struct js_event));
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if (e.type & JS_EVENT_BUTTON) {
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if (e.value == 1) {
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BX_GAMEPORT_THIS port &= ~(0x10 << e.number);
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} else {
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BX_GAMEPORT_THIS port |= (0x10 << e.number);
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}
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}
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if (e.type & JS_EVENT_AXIS) {
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if (e.number == 0) {
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BX_GAMEPORT_THIS delay_x = 25 + ((e.value + 0x8000) / 60);
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}
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if (e.number == 1) {
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BX_GAMEPORT_THIS delay_y = 25 + ((e.value + 0x8000) / 62);
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}
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}
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}
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#elif defined(WIN32)
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JOYINFO joypos;
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if (joyGetPos(JOYSTICKID1, &joypos) == JOYERR_NOERROR) {
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if (joypos.wButtons & JOY_BUTTON1) {
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BX_GAMEPORT_THIS port &= ~0x10;
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} else {
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BX_GAMEPORT_THIS port |= 0x10;
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}
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if (joypos.wButtons & JOY_BUTTON2) {
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BX_GAMEPORT_THIS port &= ~0x20;
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} else {
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BX_GAMEPORT_THIS port |= 0x20;
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}
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BX_GAMEPORT_THIS delay_x = 25 + (joypos.wXpos / 60);
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BX_GAMEPORT_THIS delay_y = 25 + (joypos.wYpos / 60);
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}
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#endif
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}
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// static IO port read callback handler
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// redirects to non-static class handler to avoid virtual functions
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Bit32u bx_gameport_c::read_handler(void *this_ptr, Bit32u address, unsigned io_len)
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{
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#if !BX_USE_GAMEPORT_SMF
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bx_gameport_c *class_ptr = (bx_gameport_c *) this_ptr;
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return class_ptr->read(address, io_len);
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}
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Bit32u bx_gameport_c::read(Bit32u address, unsigned io_len)
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{
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#else
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UNUSED(this_ptr);
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#endif // !BX_USE_GAMEPORT_SMF
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Bit64u usec;
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if (BX_GAMEPORT_THIS enabled) {
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if (BX_GAMEPORT_THIS joyfd >= 0) {
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poll_joydev();
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usec = bx_pc_system.time_usec();
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if (BX_GAMEPORT_THIS timer_x) {
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if ((usec - BX_GAMEPORT_THIS write_usec) >= BX_GAMEPORT_THIS delay_x) {
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BX_GAMEPORT_THIS port &= 0xfe;
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BX_GAMEPORT_THIS timer_x = 0;
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}
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}
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if (BX_GAMEPORT_THIS timer_y) {
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if ((usec - BX_GAMEPORT_THIS write_usec) >= BX_GAMEPORT_THIS delay_y) {
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BX_GAMEPORT_THIS port &= 0xfd;
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BX_GAMEPORT_THIS timer_y = 0;
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}
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}
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} else {
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BX_DEBUG(("read: joystick not present"));
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}
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return BX_GAMEPORT_THIS port;
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} else {
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BX_DEBUG(("read: gameport disabled"));
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return 0xff;
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}
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}
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// static IO port write callback handler
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// redirects to non-static class handler to avoid virtual functions
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void bx_gameport_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
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{
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#if !BX_USE_GAMEPORT_SMF
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bx_gameport_c *class_ptr = (bx_gameport_c *) this_ptr;
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class_ptr->write(address, value, io_len);
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}
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void bx_gameport_c::write(Bit32u address, Bit32u value, unsigned io_len)
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{
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#else
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UNUSED(this_ptr);
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#endif // !BX_USE_GAMEPORT_SMF
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if (BX_GAMEPORT_THIS enabled) {
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BX_GAMEPORT_THIS write_usec = bx_pc_system.time_usec();
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BX_GAMEPORT_THIS timer_x = 1;
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BX_GAMEPORT_THIS timer_y = 1;
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BX_GAMEPORT_THIS port |= 0x0f;
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} else {
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BX_DEBUG(("write: gameport disabled"));
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}
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}
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