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/////////////////////////////////////////////////////////////////////////
// $Id: gameport.cc,v 1.5 2003/12/29 21:48:56 cbothamy Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2003 MandrakeSoft S.A.
//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
// 75002 Paris - France
// http://www.linux-mandrake.com/
// http://www.mandrakesoft.com/
//
// This library 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 Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Standard PC gameport
//
// Define BX_PLUGGABLE in files that can be compiled into plugins. For
// platforms that require a special tag on exported symbols, BX_PLUGGABLE
// is used to know when we are exporting symbols and when we are importing.
#define BX_PLUGGABLE
#include "bochs.h"
#ifdef __linux__
#include <linux/joystick.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#elif defined(WIN32)
#ifndef JOY_BUTTON1
#define JOY_BUTTON1 1
#define JOY_BUTTON2 2
UINT STDCALL joyGetPos(UINT, LPJOYINFO);
#endif
#define JOYSTICKID1 0
#endif
#define LOG_THIS theGameport->
bx_gameport_c *theGameport = NULL;
int
libgameport_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
{
theGameport = new bx_gameport_c ();
bx_devices.pluginGameport = theGameport;
BX_REGISTER_DEVICE_DEVMODEL(plugin, type, theGameport, BX_PLUGIN_GAMEPORT);
return(0); // Success
}
void
libgameport_LTX_plugin_fini(void)
{
}
bx_gameport_c::bx_gameport_c(void)
{
put("GAME");
settype(EXTFPUIRQLOG);
}
bx_gameport_c::~bx_gameport_c(void)
{
if (joyfd >= 0) close(joyfd);
BX_DEBUG(("Exit."));
}
void
bx_gameport_c::init(void)
{
// Allocate the gameport IO address range 0x200..0x207
for (unsigned addr=0x200; addr<0x208; addr++) {
DEV_register_ioread_handler(this, read_handler, addr, "Gameport", 1);
DEV_register_iowrite_handler(this, write_handler, addr, "Gameport", 1);
}
BX_GAMEPORT_THIS port = 0xf0;
BX_GAMEPORT_THIS write_usec = 0;
BX_GAMEPORT_THIS timer_x = 0;
BX_GAMEPORT_THIS timer_y = 0;
#ifdef __linux__
BX_GAMEPORT_THIS joyfd = open("/dev/input/js0", O_RDONLY);
if (BX_GAMEPORT_THIS joyfd >= 0) {
for (unsigned i=0; i<4; i++) poll_joydev();
}
#elif defined(WIN32)
JOYINFO joypos;
if (joyGetPos(JOYSTICKID1, &joypos) == JOYERR_NOERROR) {
BX_GAMEPORT_THIS joyfd = 1;
} else {
BX_GAMEPORT_THIS joyfd = -1;
}
#else
BX_GAMEPORT_THIS joyfd = -1;
#endif
}
void
bx_gameport_c::reset(unsigned type)
{
// nothing for now
}
void
bx_gameport_c::poll_joydev(void)
{
#ifdef __linux__
struct js_event e;
fd_set joyfds;
struct timeval tv;
memset(&tv, 0, sizeof(tv));
FD_ZERO(&joyfds);
FD_SET(BX_GAMEPORT_THIS joyfd, &joyfds);
e.type = 0;
if (select(BX_GAMEPORT_THIS joyfd+1, &joyfds, NULL, NULL, &tv)) {
read(BX_GAMEPORT_THIS joyfd, &e, sizeof(struct js_event));
if (e.type & JS_EVENT_BUTTON) {
if (e.value == 1) {
BX_GAMEPORT_THIS port &= ~(0x10 << e.number);
} else {
BX_GAMEPORT_THIS port |= (0x10 << e.number);
}
}
if (e.type & JS_EVENT_AXIS) {
if (e.number == 0) {
BX_GAMEPORT_THIS delay_x = 25 + ((e.value + 0x8000) / 60);
}
if (e.number == 1) {
BX_GAMEPORT_THIS delay_y = 25 + ((e.value + 0x8000) / 62);
}
}
}
#elif defined(WIN32)
JOYINFO joypos;
if (joyGetPos(JOYSTICKID1, &joypos) == JOYERR_NOERROR) {
if (joypos.wButtons & JOY_BUTTON1) {
BX_GAMEPORT_THIS port &= ~0x10;
} else {
BX_GAMEPORT_THIS port |= 0x10;
}
if (joypos.wButtons & JOY_BUTTON2) {
BX_GAMEPORT_THIS port &= ~0x20;
} else {
BX_GAMEPORT_THIS port |= 0x20;
}
BX_GAMEPORT_THIS delay_x = 25 + (joypos.wXpos / 60);
BX_GAMEPORT_THIS delay_y = 25 + (joypos.wYpos / 60);
}
#endif
}
// static IO port read callback handler
// redirects to non-static class handler to avoid virtual functions
Bit32u
bx_gameport_c::read_handler(void *this_ptr, Bit32u address, unsigned io_len)
{
#if !BX_USE_GAME_SMF
bx_gameport_c *class_ptr = (bx_gameport_c *) this_ptr;
return( class_ptr->read(address, io_len) );
}
Bit32u
bx_gameport_c::read(Bit32u address, unsigned io_len)
{
#else
UNUSED(this_ptr);
#endif // !BX_USE_GAME_SMF
Bit64u usec;
if (BX_GAMEPORT_THIS joyfd >= 0) {
poll_joydev();
usec = bx_pc_system.time_usec();
if (BX_GAMEPORT_THIS timer_x) {
if ((usec - BX_GAMEPORT_THIS write_usec) >= BX_GAMEPORT_THIS delay_x) {
BX_GAMEPORT_THIS port &= 0xfe;
BX_GAMEPORT_THIS timer_x = 0;
}
}
if (BX_GAMEPORT_THIS timer_y) {
if ((usec - BX_GAMEPORT_THIS write_usec) >= BX_GAMEPORT_THIS delay_y) {
BX_GAMEPORT_THIS port &= 0xfd;
BX_GAMEPORT_THIS timer_y = 0;
}
}
} else {
BX_DEBUG(("read: joystick not present"));
}
return BX_GAMEPORT_THIS port;
}
// static IO port write callback handler
// redirects to non-static class handler to avoid virtual functions
void
bx_gameport_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
{
#if !BX_USE_GAME_SMF
bx_gameport_c *class_ptr = (bx_gameport_c *) this_ptr;
class_ptr->write(address, value, io_len);
}
void
bx_gameport_c::write(Bit32u address, Bit32u value, unsigned io_len)
{
#else
UNUSED(this_ptr);
#endif // !BX_USE_GAME_SMF
BX_GAMEPORT_THIS write_usec = bx_pc_system.time_usec();
BX_GAMEPORT_THIS timer_x = 1;
BX_GAMEPORT_THIS timer_y = 1;
BX_GAMEPORT_THIS port |= 0x0f;
}
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