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 1.7 2004/05/19 22:52:42 dillon 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/time.h> 43 #include <sys/joystick.h> 44 45 #include <bus/isa/isavar.h> 46 #include "isa_if.h" 47 48 /* The game port can manage 4 buttons and 4 variable resistors (usually 2 49 * joysticks, each with 2 buttons and 2 pots.) via the port at address 0x201. 50 * Getting the state of the buttons is done by reading the game port: 51 * buttons 1-4 correspond to bits 4-7 and resistors 1-4 (X1, Y1, X2, Y2) 52 * to bits 0-3. 53 * if button 1 (resp 2, 3, 4) is pressed, the bit 4 (resp 5, 6, 7) is set to 0 54 * to get the value of a resistor, write the value 0xff at port and 55 * wait until the corresponding bit returns to 0. 56 */ 57 58 #define joypart(d) (minor(d)&1) 59 #define UNIT(d) ((minor(d)>>1)&3) 60 #ifndef JOY_TIMEOUT 61 #define JOY_TIMEOUT 2000 /* 2 milliseconds */ 62 #endif 63 64 struct joy_softc { 65 bus_space_tag_t bt; 66 bus_space_handle_t port; 67 int x_off[2], y_off[2]; 68 int timeout[2]; 69 }; 70 71 #define JOY_SOFTC(unit) (struct joy_softc *) \ 72 devclass_get_softc(joy_devclass,(unit)) 73 74 static int joy_probe (device_t); 75 static int joy_attach (device_t); 76 77 #define CDEV_MAJOR 51 78 static d_open_t joyopen; 79 static d_close_t joyclose; 80 static d_read_t joyread; 81 static d_ioctl_t joyioctl; 82 83 static struct cdevsw joy_cdevsw = { 84 /* name */ "joy", 85 /* maj */ CDEV_MAJOR, 86 /* flags */ 0, 87 /* port */ NULL, 88 /* clone */ NULL, 89 90 /* open */ joyopen, 91 /* close */ joyclose, 92 /* read */ joyread, 93 /* write */ nowrite, 94 /* ioctl */ joyioctl, 95 /* poll */ nopoll, 96 /* mmap */ nommap, 97 /* strategy */ nostrategy, 98 /* dump */ nodump, 99 /* psize */ nopsize 100 }; 101 102 devclass_t joy_devclass; 103 104 static struct isa_pnp_id joy_ids[] = { 105 {0x0100630e, "CSC0001 PnP Joystick"}, /* CSC0001 */ 106 {0x0101630e, "CSC0101 PnP Joystick"}, /* CSC0101 */ 107 {0x01100002, "ALS0110 PnP Joystick"}, /* @P@1001 */ 108 {0x01200002, "ALS0120 PnP Joystick"}, /* @P@2001 */ 109 {0x01007316, "ESS0001 PnP Joystick"}, /* ESS0001 */ 110 {0x2fb0d041, "Generic PnP Joystick"}, /* PNPb02f */ 111 {0x2200a865, "YMH0022 PnP Joystick"}, /* YMH0022 */ 112 {0x82719304, NULL}, /* ADS7182 */ 113 {0} 114 }; 115 116 static int 117 joy_probe (device_t dev) 118 { 119 if (ISA_PNP_PROBE(device_get_parent(dev), dev, joy_ids) == ENXIO) 120 return ENXIO; 121 #ifdef WANT_JOYSTICK_CONNECTED 122 #ifdef notyet 123 outb (dev->id_iobase, 0xff); 124 DELAY (10000); /* 10 ms delay */ 125 return (inb (dev->id_iobase) & 0x0f) != 0x0f; 126 #endif 127 #else 128 return 0; 129 #endif 130 } 131 132 static int 133 joy_attach (device_t dev) 134 { 135 int unit = device_get_unit(dev); 136 int rid = 0; 137 struct resource *res; 138 struct joy_softc *joy = device_get_softc(dev); 139 140 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, RF_ACTIVE); 141 if (res == NULL) 142 return ENXIO; 143 joy->bt = rman_get_bustag(res); 144 joy->port = rman_get_bushandle(res); 145 joy->timeout[0] = joy->timeout[1] = 0; 146 cdevsw_add(&joy_cdevsw, -1, unit); 147 make_dev(&joy_cdevsw, unit, 0, 0, 0600, "joy%d", unit); 148 return 0; 149 } 150 151 static device_method_t joy_methods[] = { 152 DEVMETHOD(device_probe, joy_probe), 153 DEVMETHOD(device_attach, joy_attach), 154 { 0, 0 } 155 }; 156 157 static driver_t joy_isa_driver = { 158 "joy", 159 joy_methods, 160 sizeof (struct joy_softc) 161 }; 162 163 DRIVER_MODULE(joy, isa, joy_isa_driver, joy_devclass, 0, 0); 164 165 static int 166 joyopen(dev_t dev, int flags, int fmt, d_thread_t *td) 167 { 168 int i = joypart (dev); 169 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 170 171 if (joy->timeout[i]) 172 return EBUSY; 173 joy->x_off[i] = joy->y_off[i] = 0; 174 joy->timeout[i] = JOY_TIMEOUT; 175 return 0; 176 } 177 178 static int 179 joyclose(dev_t dev, int flags, int fmt, d_thread_t *td) 180 { 181 int i = joypart (dev); 182 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 183 184 joy->timeout[i] = 0; 185 return 0; 186 } 187 188 static int 189 joyread(dev_t dev, struct uio *uio, int flag) 190 { 191 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 192 bus_space_handle_t port = joy->port; 193 bus_space_tag_t bt = joy->bt; 194 struct timespec t, start, end; 195 int state = 0; 196 struct timespec x, y; 197 struct joystick c; 198 #ifndef i386 199 int s; 200 201 s = splhigh(); 202 #else 203 disable_intr (); 204 #endif 205 bus_space_write_1 (bt, port, 0, 0xff); 206 nanotime(&start); 207 end.tv_sec = 0; 208 end.tv_nsec = joy->timeout[joypart(dev)] * 1000; 209 timespecadd(&end, &start); 210 t = start; 211 timespecclear(&x); 212 timespecclear(&y); 213 while (timespeccmp(&t, &end, <)) { 214 state = bus_space_read_1 (bt, port, 0); 215 if (joypart(dev) == 1) 216 state >>= 2; 217 nanotime(&t); 218 if (!timespecisset(&x) && !(state & 0x01)) 219 x = t; 220 if (!timespecisset(&y) && !(state & 0x02)) 221 y = t; 222 if (timespecisset(&x) && timespecisset(&y)) 223 break; 224 } 225 #ifndef i386 226 splx(s); 227 #else 228 enable_intr (); 229 #endif 230 if (timespecisset(&x)) { 231 timespecsub(&x, &start); 232 c.x = joy->x_off[joypart(dev)] + x.tv_nsec / 1000; 233 } else 234 c.x = 0x80000000; 235 if (timespecisset(&y)) { 236 timespecsub(&y, &start); 237 c.y = joy->y_off[joypart(dev)] + y.tv_nsec / 1000; 238 } else 239 c.y = 0x80000000; 240 state >>= 4; 241 c.b1 = ~state & 1; 242 c.b2 = ~(state >> 1) & 1; 243 return uiomove ((caddr_t)&c, sizeof(struct joystick), uio); 244 } 245 246 static int 247 joyioctl(dev_t dev, u_long cmd, caddr_t data, int flag, d_thread_t *td) 248 { 249 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 250 int i = joypart (dev); 251 int x; 252 253 switch (cmd) { 254 case JOY_SETTIMEOUT: 255 x = *(int *) data; 256 if (x < 1 || x > 10000) /* 10ms maximum! */ 257 return EINVAL; 258 joy->timeout[i] = x; 259 break; 260 case JOY_GETTIMEOUT: 261 *(int *) data = joy->timeout[i]; 262 break; 263 case JOY_SET_X_OFFSET: 264 joy->x_off[i] = *(int *) data; 265 break; 266 case JOY_SET_Y_OFFSET: 267 joy->y_off[i] = *(int *) data; 268 break; 269 case JOY_GET_X_OFFSET: 270 *(int *) data = joy->x_off[i]; 271 break; 272 case JOY_GET_Y_OFFSET: 273 *(int *) data = joy->y_off[i]; 274 break; 275 default: 276 return ENXIO; 277 } 278 return 0; 279 } 280