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 1.9 2006/07/28 02:17:36 dillon Exp $ 30 */ 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/conf.h> 35 #include <sys/device.h> 36 #include <sys/uio.h> 37 #include <sys/kernel.h> 38 #include <sys/module.h> 39 #include <sys/bus.h> 40 #include <machine/bus.h> 41 #include <machine/resource.h> 42 #include <sys/rman.h> 43 #include <sys/thread2.h> 44 #include <sys/time.h> 45 #include <sys/joystick.h> 46 47 #include <bus/isa/isavar.h> 48 #include "isa_if.h" 49 50 /* The game port can manage 4 buttons and 4 variable resistors (usually 2 51 * joysticks, each with 2 buttons and 2 pots.) via the port at address 0x201. 52 * Getting the state of the buttons is done by reading the game port: 53 * buttons 1-4 correspond to bits 4-7 and resistors 1-4 (X1, Y1, X2, Y2) 54 * to bits 0-3. 55 * if button 1 (resp 2, 3, 4) is pressed, the bit 4 (resp 5, 6, 7) is set to 0 56 * to get the value of a resistor, write the value 0xff at port and 57 * wait until the corresponding bit returns to 0. 58 */ 59 60 #define joypart(d) (minor(d)&1) 61 #define UNIT(d) ((minor(d)>>1)&3) 62 #ifndef JOY_TIMEOUT 63 #define JOY_TIMEOUT 2000 /* 2 milliseconds */ 64 #endif 65 66 struct joy_softc { 67 bus_space_tag_t bt; 68 bus_space_handle_t port; 69 int x_off[2], y_off[2]; 70 int timeout[2]; 71 }; 72 73 #define JOY_SOFTC(unit) (struct joy_softc *) \ 74 devclass_get_softc(joy_devclass,(unit)) 75 76 static int joy_probe (device_t); 77 static int joy_attach (device_t); 78 79 #define CDEV_MAJOR 51 80 static d_open_t joyopen; 81 static d_close_t joyclose; 82 static d_read_t joyread; 83 static d_ioctl_t joyioctl; 84 85 static struct dev_ops joy_ops = { 86 { "joy", CDEV_MAJOR, 0 }, 87 .d_open = joyopen, 88 .d_close = joyclose, 89 .d_read = joyread, 90 .d_ioctl = joyioctl, 91 }; 92 93 devclass_t joy_devclass; 94 95 static struct isa_pnp_id joy_ids[] = { 96 {0x0100630e, "CSC0001 PnP Joystick"}, /* CSC0001 */ 97 {0x0101630e, "CSC0101 PnP Joystick"}, /* CSC0101 */ 98 {0x01100002, "ALS0110 PnP Joystick"}, /* @P@1001 */ 99 {0x01200002, "ALS0120 PnP Joystick"}, /* @P@2001 */ 100 {0x01007316, "ESS0001 PnP Joystick"}, /* ESS0001 */ 101 {0x2fb0d041, "Generic PnP Joystick"}, /* PNPb02f */ 102 {0x2200a865, "YMH0022 PnP Joystick"}, /* YMH0022 */ 103 {0x82719304, NULL}, /* ADS7182 */ 104 {0} 105 }; 106 107 static int 108 joy_probe (device_t dev) 109 { 110 if (ISA_PNP_PROBE(device_get_parent(dev), dev, joy_ids) == ENXIO) 111 return ENXIO; 112 #ifdef WANT_JOYSTICK_CONNECTED 113 #ifdef notyet 114 outb (dev->id_iobase, 0xff); 115 DELAY (10000); /* 10 ms delay */ 116 return (inb (dev->id_iobase) & 0x0f) != 0x0f; 117 #endif 118 #else 119 return 0; 120 #endif 121 } 122 123 static int 124 joy_attach (device_t dev) 125 { 126 int unit = device_get_unit(dev); 127 int rid = 0; 128 struct resource *res; 129 struct joy_softc *joy = device_get_softc(dev); 130 131 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, RF_ACTIVE); 132 if (res == NULL) 133 return ENXIO; 134 joy->bt = rman_get_bustag(res); 135 joy->port = rman_get_bushandle(res); 136 joy->timeout[0] = joy->timeout[1] = 0; 137 dev_ops_add(&joy_ops, -1, unit); 138 make_dev(&joy_ops, unit, 0, 0, 0600, "joy%d", unit); 139 return 0; 140 } 141 142 static device_method_t joy_methods[] = { 143 DEVMETHOD(device_probe, joy_probe), 144 DEVMETHOD(device_attach, joy_attach), 145 { 0, 0 } 146 }; 147 148 static driver_t joy_isa_driver = { 149 "joy", 150 joy_methods, 151 sizeof (struct joy_softc) 152 }; 153 154 DRIVER_MODULE(joy, isa, joy_isa_driver, joy_devclass, 0, 0); 155 156 static int 157 joyopen(struct dev_open_args *ap) 158 { 159 dev_t dev = ap->a_head.a_dev; 160 int i = joypart (dev); 161 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 162 163 if (joy->timeout[i]) 164 return EBUSY; 165 joy->x_off[i] = joy->y_off[i] = 0; 166 joy->timeout[i] = JOY_TIMEOUT; 167 return 0; 168 } 169 170 static int 171 joyclose(struct dev_close_args *ap) 172 { 173 dev_t dev = ap->a_head.a_dev; 174 int i = joypart (dev); 175 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 176 177 joy->timeout[i] = 0; 178 return 0; 179 } 180 181 static int 182 joyread(struct dev_read_args *ap) 183 { 184 dev_t dev = ap->a_head.a_dev; 185 struct uio *uio = ap->a_uio; 186 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 187 bus_space_handle_t port = joy->port; 188 bus_space_tag_t bt = joy->bt; 189 struct timespec t, start, end; 190 int state = 0; 191 struct timespec x, y; 192 struct joystick c; 193 194 crit_enter(); 195 196 bus_space_write_1 (bt, port, 0, 0xff); 197 nanotime(&start); 198 end.tv_sec = 0; 199 end.tv_nsec = joy->timeout[joypart(dev)] * 1000; 200 timespecadd(&end, &start); 201 t = start; 202 timespecclear(&x); 203 timespecclear(&y); 204 while (timespeccmp(&t, &end, <)) { 205 state = bus_space_read_1 (bt, port, 0); 206 if (joypart(dev) == 1) 207 state >>= 2; 208 nanotime(&t); 209 if (!timespecisset(&x) && !(state & 0x01)) 210 x = t; 211 if (!timespecisset(&y) && !(state & 0x02)) 212 y = t; 213 if (timespecisset(&x) && timespecisset(&y)) 214 break; 215 } 216 217 crit_exit(); 218 219 if (timespecisset(&x)) { 220 timespecsub(&x, &start); 221 c.x = joy->x_off[joypart(dev)] + x.tv_nsec / 1000; 222 } else 223 c.x = 0x80000000; 224 if (timespecisset(&y)) { 225 timespecsub(&y, &start); 226 c.y = joy->y_off[joypart(dev)] + y.tv_nsec / 1000; 227 } else 228 c.y = 0x80000000; 229 state >>= 4; 230 c.b1 = ~state & 1; 231 c.b2 = ~(state >> 1) & 1; 232 return uiomove ((caddr_t)&c, sizeof(struct joystick), uio); 233 } 234 235 static int 236 joyioctl(struct dev_ioctl_args *ap) 237 { 238 dev_t dev = ap->a_head.a_dev; 239 caddr_t data = ap->a_data; 240 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 241 int i = joypart (dev); 242 int x; 243 244 switch (ap->a_cmd) { 245 case JOY_SETTIMEOUT: 246 x = *(int *) data; 247 if (x < 1 || x > 10000) /* 10ms maximum! */ 248 return EINVAL; 249 joy->timeout[i] = x; 250 break; 251 case JOY_GETTIMEOUT: 252 *(int *) data = joy->timeout[i]; 253 break; 254 case JOY_SET_X_OFFSET: 255 joy->x_off[i] = *(int *) data; 256 break; 257 case JOY_SET_Y_OFFSET: 258 joy->y_off[i] = *(int *) data; 259 break; 260 case JOY_GET_X_OFFSET: 261 *(int *) data = joy->x_off[i]; 262 break; 263 case JOY_GET_Y_OFFSET: 264 *(int *) data = joy->y_off[i]; 265 break; 266 default: 267 return ENXIO; 268 } 269 return 0; 270 } 271