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 without 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 */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/conf.h> 34 #include <sys/device.h> 35 #include <sys/uio.h> 36 #include <sys/kernel.h> 37 #include <sys/module.h> 38 #include <sys/bus.h> 39 #include <sys/rman.h> 40 #include <sys/thread2.h> 41 #include <sys/time.h> 42 #include <sys/joystick.h> 43 44 #include <bus/isa/isavar.h> 45 #include "isa_if.h" 46 47 /* The game port can manage 4 buttons and 4 variable resistors (usually 2 48 * joysticks, each with 2 buttons and 2 pots.) via the port at address 0x201. 49 * Getting the state of the buttons is done by reading the game port: 50 * buttons 1-4 correspond to bits 4-7 and resistors 1-4 (X1, Y1, X2, Y2) 51 * to bits 0-3. 52 * if button 1 (resp 2, 3, 4) is pressed, the bit 4 (resp 5, 6, 7) is set to 0 53 * to get the value of a resistor, write the value 0xff at port and 54 * wait until the corresponding bit returns to 0. 55 */ 56 57 #define joypart(d) (minor(d)&1) 58 #define UNIT(d) ((minor(d)>>1)&3) 59 #ifndef JOY_TIMEOUT 60 #define JOY_TIMEOUT 2000 /* 2 milliseconds */ 61 #endif 62 63 struct joy_softc { 64 bus_space_tag_t bt; 65 bus_space_handle_t port; 66 int x_off[2], y_off[2]; 67 int timeout[2]; 68 }; 69 70 #define JOY_SOFTC(unit) (struct joy_softc *) \ 71 devclass_get_softc(joy_devclass,(unit)) 72 73 static int joy_probe (device_t); 74 static int joy_attach (device_t); 75 76 static d_open_t joyopen; 77 static d_close_t joyclose; 78 static d_read_t joyread; 79 static d_ioctl_t joyioctl; 80 81 static struct dev_ops joy_ops = { 82 { "joy", 0, 0 }, 83 .d_open = joyopen, 84 .d_close = joyclose, 85 .d_read = joyread, 86 .d_ioctl = joyioctl, 87 }; 88 89 devclass_t joy_devclass; 90 91 static struct isa_pnp_id joy_ids[] = { 92 {0x0100630e, "CSC0001 PnP Joystick"}, /* CSC0001 */ 93 {0x0101630e, "CSC0101 PnP Joystick"}, /* CSC0101 */ 94 {0x01100002, "ALS0110 PnP Joystick"}, /* @P@1001 */ 95 {0x01200002, "ALS0120 PnP Joystick"}, /* @P@2001 */ 96 {0x01007316, "ESS0001 PnP Joystick"}, /* ESS0001 */ 97 {0x2fb0d041, "Generic PnP Joystick"}, /* PNPb02f */ 98 {0x2200a865, "YMH0022 PnP Joystick"}, /* YMH0022 */ 99 {0x82719304, NULL}, /* ADS7182 */ 100 {0} 101 }; 102 103 static int 104 joy_probe (device_t dev) 105 { 106 if (ISA_PNP_PROBE(device_get_parent(dev), dev, joy_ids) == ENXIO) 107 return ENXIO; 108 #ifdef WANT_JOYSTICK_CONNECTED 109 #ifdef notyet 110 outb (dev->id_iobase, 0xff); 111 DELAY (10000); /* 10 ms delay */ 112 return (inb (dev->id_iobase) & 0x0f) != 0x0f; 113 #endif 114 #else 115 return 0; 116 #endif 117 } 118 119 static int 120 joy_attach (device_t dev) 121 { 122 int unit = device_get_unit(dev); 123 int rid = 0; 124 struct resource *res; 125 struct joy_softc *joy = device_get_softc(dev); 126 127 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, RF_ACTIVE); 128 if (res == NULL) 129 return ENXIO; 130 joy->bt = rman_get_bustag(res); 131 joy->port = rman_get_bushandle(res); 132 joy->timeout[0] = joy->timeout[1] = 0; 133 make_dev(&joy_ops, unit, 0, 0, 0600, "joy%d", unit); 134 return 0; 135 } 136 137 static device_method_t joy_methods[] = { 138 DEVMETHOD(device_probe, joy_probe), 139 DEVMETHOD(device_attach, joy_attach), 140 DEVMETHOD_END 141 }; 142 143 static driver_t joy_isa_driver = { 144 "joy", 145 joy_methods, 146 sizeof (struct joy_softc) 147 }; 148 149 DRIVER_MODULE(joy, isa, joy_isa_driver, joy_devclass, NULL, NULL); 150 DRIVER_MODULE(joy, acpi, joy_isa_driver, joy_devclass, NULL, NULL); 151 152 static int 153 joyopen(struct dev_open_args *ap) 154 { 155 cdev_t dev = ap->a_head.a_dev; 156 int i = joypart (dev); 157 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 158 159 if (joy->timeout[i]) 160 return EBUSY; 161 joy->x_off[i] = joy->y_off[i] = 0; 162 joy->timeout[i] = JOY_TIMEOUT; 163 return 0; 164 } 165 166 static int 167 joyclose(struct dev_close_args *ap) 168 { 169 cdev_t dev = ap->a_head.a_dev; 170 int i = joypart (dev); 171 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 172 173 joy->timeout[i] = 0; 174 return 0; 175 } 176 177 static int 178 joyread(struct dev_read_args *ap) 179 { 180 cdev_t dev = ap->a_head.a_dev; 181 struct uio *uio = ap->a_uio; 182 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 183 bus_space_handle_t port = joy->port; 184 bus_space_tag_t bt = joy->bt; 185 struct timespec t, start, end; 186 int state = 0; 187 struct timespec x, y; 188 struct joystick c; 189 190 crit_enter(); 191 192 bus_space_write_1 (bt, port, 0, 0xff); 193 nanotime(&start); 194 end.tv_sec = 0; 195 end.tv_nsec = joy->timeout[joypart(dev)] * 1000; 196 timespecadd(&end, &start); 197 t = start; 198 timespecclear(&x); 199 timespecclear(&y); 200 while (timespeccmp(&t, &end, <)) { 201 state = bus_space_read_1 (bt, port, 0); 202 if (joypart(dev) == 1) 203 state >>= 2; 204 nanotime(&t); 205 if (!timespecisset(&x) && !(state & 0x01)) 206 x = t; 207 if (!timespecisset(&y) && !(state & 0x02)) 208 y = t; 209 if (timespecisset(&x) && timespecisset(&y)) 210 break; 211 } 212 213 crit_exit(); 214 215 if (timespecisset(&x)) { 216 timespecsub(&x, &start); 217 c.x = joy->x_off[joypart(dev)] + x.tv_nsec / 1000; 218 } else 219 c.x = 0x80000000; 220 if (timespecisset(&y)) { 221 timespecsub(&y, &start); 222 c.y = joy->y_off[joypart(dev)] + y.tv_nsec / 1000; 223 } else 224 c.y = 0x80000000; 225 state >>= 4; 226 c.b1 = ~state & 1; 227 c.b2 = ~(state >> 1) & 1; 228 return uiomove ((caddr_t)&c, sizeof(struct joystick), uio); 229 } 230 231 static int 232 joyioctl(struct dev_ioctl_args *ap) 233 { 234 cdev_t dev = ap->a_head.a_dev; 235 caddr_t data = ap->a_data; 236 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 237 int i = joypart (dev); 238 int x; 239 240 switch (ap->a_cmd) { 241 case JOY_SETTIMEOUT: 242 x = *(int *) data; 243 if (x < 1 || x > 10000) /* 10ms maximum! */ 244 return EINVAL; 245 joy->timeout[i] = x; 246 break; 247 case JOY_GETTIMEOUT: 248 *(int *) data = joy->timeout[i]; 249 break; 250 case JOY_SET_X_OFFSET: 251 joy->x_off[i] = *(int *) data; 252 break; 253 case JOY_SET_Y_OFFSET: 254 joy->y_off[i] = *(int *) data; 255 break; 256 case JOY_GET_X_OFFSET: 257 *(int *) data = joy->x_off[i]; 258 break; 259 case JOY_GET_Y_OFFSET: 260 *(int *) data = joy->y_off[i]; 261 break; 262 default: 263 return ENXIO; 264 } 265 return 0; 266 } 267