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 1.12 2007/10/23 03:04:49 y0netan1 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 <sys/rman.h> 41 #include <sys/thread2.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 dev_ops joy_ops = { 84 { "joy", CDEV_MAJOR, 0 }, 85 .d_open = joyopen, 86 .d_close = joyclose, 87 .d_read = joyread, 88 .d_ioctl = joyioctl, 89 }; 90 91 devclass_t joy_devclass; 92 93 static struct isa_pnp_id joy_ids[] = { 94 {0x0100630e, "CSC0001 PnP Joystick"}, /* CSC0001 */ 95 {0x0101630e, "CSC0101 PnP Joystick"}, /* CSC0101 */ 96 {0x01100002, "ALS0110 PnP Joystick"}, /* @P@1001 */ 97 {0x01200002, "ALS0120 PnP Joystick"}, /* @P@2001 */ 98 {0x01007316, "ESS0001 PnP Joystick"}, /* ESS0001 */ 99 {0x2fb0d041, "Generic PnP Joystick"}, /* PNPb02f */ 100 {0x2200a865, "YMH0022 PnP Joystick"}, /* YMH0022 */ 101 {0x82719304, NULL}, /* ADS7182 */ 102 {0} 103 }; 104 105 static int 106 joy_probe (device_t dev) 107 { 108 if (ISA_PNP_PROBE(device_get_parent(dev), dev, joy_ids) == ENXIO) 109 return ENXIO; 110 #ifdef WANT_JOYSTICK_CONNECTED 111 #ifdef notyet 112 outb (dev->id_iobase, 0xff); 113 DELAY (10000); /* 10 ms delay */ 114 return (inb (dev->id_iobase) & 0x0f) != 0x0f; 115 #endif 116 #else 117 return 0; 118 #endif 119 } 120 121 static int 122 joy_attach (device_t dev) 123 { 124 int unit = device_get_unit(dev); 125 int rid = 0; 126 struct resource *res; 127 struct joy_softc *joy = device_get_softc(dev); 128 129 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, RF_ACTIVE); 130 if (res == NULL) 131 return ENXIO; 132 joy->bt = rman_get_bustag(res); 133 joy->port = rman_get_bushandle(res); 134 joy->timeout[0] = joy->timeout[1] = 0; 135 dev_ops_add(&joy_ops, -1, unit); 136 make_dev(&joy_ops, unit, 0, 0, 0600, "joy%d", unit); 137 return 0; 138 } 139 140 static device_method_t joy_methods[] = { 141 DEVMETHOD(device_probe, joy_probe), 142 DEVMETHOD(device_attach, joy_attach), 143 { 0, 0 } 144 }; 145 146 static driver_t joy_isa_driver = { 147 "joy", 148 joy_methods, 149 sizeof (struct joy_softc) 150 }; 151 152 DRIVER_MODULE(joy, isa, joy_isa_driver, joy_devclass, 0, 0); 153 DRIVER_MODULE(joy, acpi, joy_isa_driver, joy_devclass, 0, 0); 154 155 static int 156 joyopen(struct dev_open_args *ap) 157 { 158 cdev_t dev = ap->a_head.a_dev; 159 int i = joypart (dev); 160 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 161 162 if (joy->timeout[i]) 163 return EBUSY; 164 joy->x_off[i] = joy->y_off[i] = 0; 165 joy->timeout[i] = JOY_TIMEOUT; 166 return 0; 167 } 168 169 static int 170 joyclose(struct dev_close_args *ap) 171 { 172 cdev_t dev = ap->a_head.a_dev; 173 int i = joypart (dev); 174 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 175 176 joy->timeout[i] = 0; 177 return 0; 178 } 179 180 static int 181 joyread(struct dev_read_args *ap) 182 { 183 cdev_t dev = ap->a_head.a_dev; 184 struct uio *uio = ap->a_uio; 185 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 186 bus_space_handle_t port = joy->port; 187 bus_space_tag_t bt = joy->bt; 188 struct timespec t, start, end; 189 int state = 0; 190 struct timespec x, y; 191 struct joystick c; 192 193 crit_enter(); 194 195 bus_space_write_1 (bt, port, 0, 0xff); 196 nanotime(&start); 197 end.tv_sec = 0; 198 end.tv_nsec = joy->timeout[joypart(dev)] * 1000; 199 timespecadd(&end, &start); 200 t = start; 201 timespecclear(&x); 202 timespecclear(&y); 203 while (timespeccmp(&t, &end, <)) { 204 state = bus_space_read_1 (bt, port, 0); 205 if (joypart(dev) == 1) 206 state >>= 2; 207 nanotime(&t); 208 if (!timespecisset(&x) && !(state & 0x01)) 209 x = t; 210 if (!timespecisset(&y) && !(state & 0x02)) 211 y = t; 212 if (timespecisset(&x) && timespecisset(&y)) 213 break; 214 } 215 216 crit_exit(); 217 218 if (timespecisset(&x)) { 219 timespecsub(&x, &start); 220 c.x = joy->x_off[joypart(dev)] + x.tv_nsec / 1000; 221 } else 222 c.x = 0x80000000; 223 if (timespecisset(&y)) { 224 timespecsub(&y, &start); 225 c.y = joy->y_off[joypart(dev)] + y.tv_nsec / 1000; 226 } else 227 c.y = 0x80000000; 228 state >>= 4; 229 c.b1 = ~state & 1; 230 c.b2 = ~(state >> 1) & 1; 231 return uiomove ((caddr_t)&c, sizeof(struct joystick), uio); 232 } 233 234 static int 235 joyioctl(struct dev_ioctl_args *ap) 236 { 237 cdev_t dev = ap->a_head.a_dev; 238 caddr_t data = ap->a_data; 239 struct joy_softc *joy = JOY_SOFTC(UNIT(dev)); 240 int i = joypart (dev); 241 int x; 242 243 switch (ap->a_cmd) { 244 case JOY_SETTIMEOUT: 245 x = *(int *) data; 246 if (x < 1 || x > 10000) /* 10ms maximum! */ 247 return EINVAL; 248 joy->timeout[i] = x; 249 break; 250 case JOY_GETTIMEOUT: 251 *(int *) data = joy->timeout[i]; 252 break; 253 case JOY_SET_X_OFFSET: 254 joy->x_off[i] = *(int *) data; 255 break; 256 case JOY_SET_Y_OFFSET: 257 joy->y_off[i] = *(int *) data; 258 break; 259 case JOY_GET_X_OFFSET: 260 *(int *) data = joy->x_off[i]; 261 break; 262 case JOY_GET_Y_OFFSET: 263 *(int *) data = joy->y_off[i]; 264 break; 265 default: 266 return ENXIO; 267 } 268 return 0; 269 } 270