15897Sjmz/*- 25897Sjmz * Copyright (c) 1995 Jean-Marc Zucconi 35897Sjmz * All rights reserved. 45897Sjmz * 55897Sjmz * Redistribution and use in source and binary forms, with or without 65897Sjmz * modification, are permitted provided that the following conditions 75897Sjmz * are met: 85897Sjmz * 1. Redistributions of source code must retain the above copyright 95897Sjmz * notice, this list of conditions and the following disclaimer 105897Sjmz * in this position and unchanged. 115897Sjmz * 2. Redistributions in binary form must reproduce the above copyright 125897Sjmz * notice, this list of conditions and the following disclaimer in the 135897Sjmz * documentation and/or other materials provided with the distribution. 145897Sjmz * 3. The name of the author may not be used to endorse or promote products 1597748Sschweikh * derived from this software without specific prior written permission 165897Sjmz * 175897Sjmz * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 185897Sjmz * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 195897Sjmz * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 205897Sjmz * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 215897Sjmz * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 225897Sjmz * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 235897Sjmz * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 245897Sjmz * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 255897Sjmz * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 265897Sjmz * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 275897Sjmz * 285897Sjmz */ 295897Sjmz 30119418Sobrien#include <sys/cdefs.h> 31119418Sobrien__FBSDID("$FreeBSD$"); 32119418Sobrien 337430Sbde#include <sys/param.h> 347430Sbde#include <sys/systm.h> 3512675Sjulian#include <sys/conf.h> 3634924Sbde#include <sys/uio.h> 3754156Speter#include <sys/kernel.h> 3854156Speter#include <sys/module.h> 3954156Speter#include <sys/bus.h> 4054156Speter#include <machine/bus.h> 4154156Speter#include <machine/resource.h> 4254156Speter#include <sys/rman.h> 4354156Speter#include <sys/time.h> 4454156Speter#include <sys/joystick.h> 4587384Simp#include <dev/joy/joyvar.h> 466734Sbde 478876Srgrimes/* The game port can manage 4 buttons and 4 variable resistors (usually 2 485897Sjmz * joysticks, each with 2 buttons and 2 pots.) via the port at address 0x201. 495897Sjmz * Getting the state of the buttons is done by reading the game port: 505897Sjmz * buttons 1-4 correspond to bits 4-7 and resistors 1-4 (X1, Y1, X2, Y2) 515897Sjmz * to bits 0-3. 525897Sjmz * if button 1 (resp 2, 3, 4) is pressed, the bit 4 (resp 5, 6, 7) is set to 0 535897Sjmz * to get the value of a resistor, write the value 0xff at port and 545897Sjmz * wait until the corresponding bit returns to 0. 555897Sjmz */ 565897Sjmz 57183397Sed#define joypart(d) (dev2unit(d)&1) 585897Sjmz#ifndef JOY_TIMEOUT 595897Sjmz#define JOY_TIMEOUT 2000 /* 2 milliseconds */ 605897Sjmz#endif 615897Sjmz 6212675Sjulianstatic d_open_t joyopen; 6312675Sjulianstatic d_close_t joyclose; 6412675Sjulianstatic d_read_t joyread; 6512675Sjulianstatic d_ioctl_t joyioctl; 6612675Sjulian 6747625Sphkstatic struct cdevsw joy_cdevsw = { 68126080Sphk .d_version = D_VERSION, 69126080Sphk .d_flags = D_NEEDGIANT, 70111815Sphk .d_open = joyopen, 71111815Sphk .d_close = joyclose, 72111815Sphk .d_read = joyread, 73111815Sphk .d_ioctl = joyioctl, 74111815Sphk .d_name = "joy", 7547625Sphk}; 7612675Sjulian 7789086Simpdevclass_t joy_devclass; 785897Sjmz 7987384Simpint 8087384Simpjoy_probe(device_t dev) 815897Sjmz{ 825897Sjmz#ifdef WANT_JOYSTICK_CONNECTED 8354156Speter#ifdef notyet 8487384Simp outb(dev->id_iobase, 0xff); 8587384Simp DELAY(10000); /* 10 ms delay */ 8687384Simp return (inb(dev->id_iobase) & 0x0f) != 0x0f; 8787384Simp#else 8887384Simp return (0); 8954156Speter#endif 905897Sjmz#else 9187384Simp return (0); 925897Sjmz#endif 935897Sjmz} 945897Sjmz 9587384Simpint 9687384Simpjoy_attach(device_t dev) 975897Sjmz{ 9887384Simp int unit = device_get_unit(dev); 9987384Simp struct joy_softc *joy = device_get_softc(dev); 1005897Sjmz 10187384Simp joy->rid = 0; 102127135Snjl joy->res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &joy->rid, 103152249Sjylefort RF_ACTIVE|RF_SHAREABLE); 10487384Simp if (joy->res == NULL) 10587384Simp return ENXIO; 10687384Simp joy->bt = rman_get_bustag(joy->res); 10787384Simp joy->port = rman_get_bushandle(joy->res); 10887384Simp joy->timeout[0] = joy->timeout[1] = 0; 109152249Sjylefort joy->d = make_dev(&joy_cdevsw, unit, 0, 0, 0600, "joy%d", unit); 110191054Sed joy->d->si_drv1 = joy; 11187384Simp return (0); 1125897Sjmz} 1135897Sjmz 11487384Simpint 11587384Simpjoy_detach(device_t dev) 11687384Simp{ 11787384Simp struct joy_softc *joy = device_get_softc(dev); 11854156Speter 11987384Simp if (joy->res != NULL) 12087384Simp bus_release_resource(dev, SYS_RES_IOPORT, joy->rid, joy->res); 12187384Simp if (joy->d) 12287384Simp destroy_dev(joy->d); 12387384Simp return (0); 12487384Simp} 12554156Speter 12654156Speter 12754156Speterstatic int 128130585Sphkjoyopen(struct cdev *dev, int flags, int fmt, struct thread *td) 1295897Sjmz{ 13087384Simp int i = joypart (dev); 131191054Sed struct joy_softc *joy = dev->si_drv1; 1325897Sjmz 13387384Simp if (joy->timeout[i]) 13487384Simp return (EBUSY); 13587384Simp joy->x_off[i] = joy->y_off[i] = 0; 13687384Simp joy->timeout[i] = JOY_TIMEOUT; 13787384Simp return (0); 1385897Sjmz} 13954156Speter 14054156Speterstatic int 141130585Sphkjoyclose(struct cdev *dev, int flags, int fmt, struct thread *td) 1425897Sjmz{ 14387384Simp int i = joypart (dev); 144191054Sed struct joy_softc *joy = dev->si_drv1; 1455897Sjmz 14687384Simp joy->timeout[i] = 0; 14787384Simp return (0); 1485897Sjmz} 1495897Sjmz 15054156Speterstatic int 151130585Sphkjoyread(struct cdev *dev, struct uio *uio, int flag) 1525897Sjmz{ 153191054Sed struct joy_softc *joy = dev->si_drv1; 15487384Simp bus_space_handle_t port = joy->port; 15587384Simp bus_space_tag_t bt = joy->bt; 15687384Simp struct timespec t, start, end; 15787384Simp int state = 0; 15887384Simp struct timespec x, y; 15987384Simp struct joystick c; 16097554Salfred#ifndef __i386__ 16187384Simp int s; 1628876Srgrimes 16387384Simp s = splhigh(); 16454156Speter#else 16587384Simp disable_intr (); 16654156Speter#endif 167152249Sjylefort nanotime(&t); 168152249Sjylefort end.tv_sec = 0; 169152249Sjylefort end.tv_nsec = joy->timeout[joypart(dev)] * 1000; 170152249Sjylefort timespecadd(&end, &t); 171152249Sjylefort for (; timespeccmp(&t, &end, <) && (bus_space_read_1(bt, port, 0) & 0x0f); nanotime(&t)) 172152249Sjylefort ; /* nothing */ 17387384Simp bus_space_write_1 (bt, port, 0, 0xff); 17487384Simp nanotime(&start); 17587384Simp end.tv_sec = 0; 17687384Simp end.tv_nsec = joy->timeout[joypart(dev)] * 1000; 17787384Simp timespecadd(&end, &start); 17887384Simp t = start; 17987384Simp timespecclear(&x); 18087384Simp timespecclear(&y); 18187384Simp while (timespeccmp(&t, &end, <)) { 18287384Simp state = bus_space_read_1 (bt, port, 0); 18387384Simp if (joypart(dev) == 1) 18487384Simp state >>= 2; 18587384Simp nanotime(&t); 18687384Simp if (!timespecisset(&x) && !(state & 0x01)) 18787384Simp x = t; 18887384Simp if (!timespecisset(&y) && !(state & 0x02)) 18987384Simp y = t; 19087384Simp if (timespecisset(&x) && timespecisset(&y)) 19187384Simp break; 19287384Simp } 19397554Salfred#ifndef __i386__ 19487384Simp splx(s); 19554156Speter#else 19687384Simp enable_intr (); 19754156Speter#endif 19887384Simp if (timespecisset(&x)) { 19987384Simp timespecsub(&x, &start); 20087384Simp c.x = joy->x_off[joypart(dev)] + x.tv_nsec / 1000; 20187384Simp } else 20287384Simp c.x = 0x80000000; 20387384Simp if (timespecisset(&y)) { 20487384Simp timespecsub(&y, &start); 20587384Simp c.y = joy->y_off[joypart(dev)] + y.tv_nsec / 1000; 20687384Simp } else 20787384Simp c.y = 0x80000000; 20887384Simp state >>= 4; 20987384Simp c.b1 = ~state & 1; 21087384Simp c.b2 = ~(state >> 1) & 1; 21187384Simp return (uiomove((caddr_t)&c, sizeof(struct joystick), uio)); 2125897Sjmz} 21312675Sjulian 21454156Speterstatic int 215130585Sphkjoyioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 2165897Sjmz{ 217191054Sed struct joy_softc *joy = dev->si_drv1; 21887384Simp int i = joypart (dev); 21987384Simp int x; 2205897Sjmz 22187384Simp switch (cmd) { 22287384Simp case JOY_SETTIMEOUT: 22387384Simp x = *(int *) data; 22487384Simp if (x < 1 || x > 10000) /* 10ms maximum! */ 22587384Simp return EINVAL; 22687384Simp joy->timeout[i] = x; 22787384Simp break; 22887384Simp case JOY_GETTIMEOUT: 22987384Simp *(int *) data = joy->timeout[i]; 23087384Simp break; 23187384Simp case JOY_SET_X_OFFSET: 23287384Simp joy->x_off[i] = *(int *) data; 23387384Simp break; 23487384Simp case JOY_SET_Y_OFFSET: 23587384Simp joy->y_off[i] = *(int *) data; 23687384Simp break; 23787384Simp case JOY_GET_X_OFFSET: 23887384Simp *(int *) data = joy->x_off[i]; 23987384Simp break; 24087384Simp case JOY_GET_Y_OFFSET: 24187384Simp *(int *) data = joy->y_off[i]; 24287384Simp break; 24387384Simp default: 24487384Simp return (ENOTTY); 24587384Simp } 24687384Simp return (0); 2475897Sjmz} 248