1 /*- 2 * Copyright (c) 1995 Jean-Marc Zucconi 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software withough specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD: src/sys/isa/joy.c,v 1.38.2.1 2001/09/01 05:55:31 murray Exp $ 29 * $DragonFly: src/sys/dev/misc/joy/joy.c,v 1.8 2005/06/16 15:51:34 joerg Exp $ 30 */ 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/conf.h> 35 #include <sys/uio.h> 36 #include <sys/kernel.h> 37 #include <sys/module.h> 38 #include <sys/bus.h> 39 #include <machine/bus.h> 40 #include <machine/resource.h> 41 #include <sys/rman.h> 42 #include <sys/thread2.h> 43 #include <sys/time.h> 44 #include <sys/joystick.h> 45 46 #include <bus/isa/isavar.h> 47 #include "isa_if.h" 48 49 /* The game port can manage 4 buttons and 4 variable resistors (usually 2 50 * joysticks, each with 2 buttons and 2 pots.) via the port at address 0x201. 51 * Getting the state of the buttons is done by reading the game port: 52 * buttons 1-4 correspond to bits 4-7 and resistors 1-4 (X1, Y1, X2, Y2) 53 * to bits 0-3. 54 * if button 1 (resp 2, 3, 4) is pressed, the bit 4 (resp 5, 6, 7) is set to 0 55 * to get the value of a resistor, write the value 0xff at port and 56 * wait until the corresponding bit returns to 0. 57 */ 58 59 #define joypart(d) (minor(d)&1) 60 #define UNIT(d) ((minor(d)>>1)&3) 61 #ifndef JOY_TIMEOUT 62 #define JOY_TIMEOUT 2000 /* 2 milliseconds */ 63 #endif 64 65 struct joy_softc { 66 bus_space_tag_t bt; 67 bus_space_handle_t port; 68 int x_off[2], y_off[2]; 69 int timeout[2]; 70 }; 71 72 #define JOY_SOFTC(unit) (struct joy_softc *) \ 73 devclass_get_softc(joy_devclass,(unit)) 74 75 static int joy_probe (device_t); 76 static int joy_attach (device_t); 77 78 #define CDEV_MAJOR 51 79 static d_open_t joyopen; 80 static d_close_t joyclose; 81 static d_read_t joyread; 82 static d_ioctl_t joyioctl; 83 84 static struct cdevsw joy_cdevsw = { 85 /* name */ "joy", 86 /* maj */ CDEV_MAJOR, 87 /* flags */ 0, 88 /* port */ NULL, 89 /* clone */ NULL, 90 91 /* open */ joyopen, 92 /* close */ joyclose, 93 /* read */ joyread, 94 /* write */ nowrite, 95 /* ioctl */ joyioctl, 96 /* poll */ nopoll, 97 /* mmap */ nommap, 98 /* strategy */ nostrategy, 99 /* dump */ nodump, 100 /* psize */ nopsize 101 }; 102 103 devclass_t joy_devclass; 104 105 static struct isa_pnp_id joy_ids[] = { 106 {0x0100630e, "CSC0001 PnP Joystick"}, /* CSC0001 */ 107 {0x0101630e, "CSC0101 PnP Joystick"}, /* CSC0101 */ 108 {0x01100002, "ALS0110 PnP Joystick"}, /* @P@1001 */ 109 {0x01200002, "ALS0120 PnP Joystick"}, /* @P@2001 */ 110 {0x01007316, "ESS0001 PnP Joystick"}, /* ESS0001 */ 111 {0x2fb0d041, "Generic PnP Joystick"}, /* PNPb02f */ 112 {0x2200a865, "YMH0022 PnP Joystick"}, /* YMH0022 */ 113 {0x82719304, NULL}, /* ADS7182 */ 114 {0} 115 }; 116 117 static int 118 joy_probe (device_t dev) 119 { 120 if (ISA_PNP_PROBE(device_get_parent(dev), dev, joy_ids) == ENXIO) 121 return ENXIO; 122 #ifdef WANT_JOYSTICK_CONNECTED 123 #ifdef notyet 124 outb (dev->id_iobase, 0xff); 125 DELAY (10000); /* 10 ms delay */ 126 return (inb (dev->id_iobase) & 0x0f) != 0x0f; 127 #endif 128 #else 129 return 0; 130 #endif 131 } 132 133 static int 134 joy_attach (device_t dev) 135 { 136 int unit = device_get_unit(dev); 137 int rid = 0; 138 struct resource *res; 139 struct joy_softc *joy = device_get_softc(dev); 140 141 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, RF_ACTIVE); 142 if (res == NULL) 143 return ENXIO; 144 joy->bt = rman_get_bustag(res); 145 joy->port = rman_get_bushandle(res); 146 joy->timeout[0] = joy->timeout[1] = 0; 147 cdevsw_add(&joy_cdevsw, -1, unit); 148 make_dev(&joy_cdevsw, unit, 0, 0, 0600, "joy%d", unit); 149 return 0; 150 } 151 152 static device_method_t joy_methods[] = { 153 DEVMETHOD(device_probe, joy_probe), 154 DEVMETHOD(device_attach, joy_attach), 155 { 0, 0 } 156 }; 157 158 static driver_t joy_isa_driver = { 159 "joy", 160 joy_methods, 161 sizeof (struct joy_softc) 162 }; 163 164 DRIVER_MODULE(joy, isa, joy_isa_driver, joy_devclass, 0, 0); 165 166 static int 167 joyopen(dev_t dev, int flags, int fmt, d_thread_t *td) 168 { 169 int i = joypart (dev); 170 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 171 172 if (joy->timeout[i]) 173 return EBUSY; 174 joy->x_off[i] = joy->y_off[i] = 0; 175 joy->timeout[i] = JOY_TIMEOUT; 176 return 0; 177 } 178 179 static int 180 joyclose(dev_t dev, int flags, int fmt, d_thread_t *td) 181 { 182 int i = joypart (dev); 183 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 184 185 joy->timeout[i] = 0; 186 return 0; 187 } 188 189 static int 190 joyread(dev_t dev, struct uio *uio, int flag) 191 { 192 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 193 bus_space_handle_t port = joy->port; 194 bus_space_tag_t bt = joy->bt; 195 struct timespec t, start, end; 196 int state = 0; 197 struct timespec x, y; 198 struct joystick c; 199 200 crit_enter(); 201 202 bus_space_write_1 (bt, port, 0, 0xff); 203 nanotime(&start); 204 end.tv_sec = 0; 205 end.tv_nsec = joy->timeout[joypart(dev)] * 1000; 206 timespecadd(&end, &start); 207 t = start; 208 timespecclear(&x); 209 timespecclear(&y); 210 while (timespeccmp(&t, &end, <)) { 211 state = bus_space_read_1 (bt, port, 0); 212 if (joypart(dev) == 1) 213 state >>= 2; 214 nanotime(&t); 215 if (!timespecisset(&x) && !(state & 0x01)) 216 x = t; 217 if (!timespecisset(&y) && !(state & 0x02)) 218 y = t; 219 if (timespecisset(&x) && timespecisset(&y)) 220 break; 221 } 222 223 crit_exit(); 224 225 if (timespecisset(&x)) { 226 timespecsub(&x, &start); 227 c.x = joy->x_off[joypart(dev)] + x.tv_nsec / 1000; 228 } else 229 c.x = 0x80000000; 230 if (timespecisset(&y)) { 231 timespecsub(&y, &start); 232 c.y = joy->y_off[joypart(dev)] + y.tv_nsec / 1000; 233 } else 234 c.y = 0x80000000; 235 state >>= 4; 236 c.b1 = ~state & 1; 237 c.b2 = ~(state >> 1) & 1; 238 return uiomove ((caddr_t)&c, sizeof(struct joystick), uio); 239 } 240 241 static int 242 joyioctl(dev_t dev, u_long cmd, caddr_t data, int flag, d_thread_t *td) 243 { 244 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 245 int i = joypart (dev); 246 int x; 247 248 switch (cmd) { 249 case JOY_SETTIMEOUT: 250 x = *(int *) data; 251 if (x < 1 || x > 10000) /* 10ms maximum! */ 252 return EINVAL; 253 joy->timeout[i] = x; 254 break; 255 case JOY_GETTIMEOUT: 256 *(int *) data = joy->timeout[i]; 257 break; 258 case JOY_SET_X_OFFSET: 259 joy->x_off[i] = *(int *) data; 260 break; 261 case JOY_SET_Y_OFFSET: 262 joy->y_off[i] = *(int *) data; 263 break; 264 case JOY_GET_X_OFFSET: 265 *(int *) data = joy->x_off[i]; 266 break; 267 case JOY_GET_Y_OFFSET: 268 *(int *) data = joy->y_off[i]; 269 break; 270 default: 271 return ENXIO; 272 } 273 return 0; 274 } 275