The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/isa/joy.c

Version: -  FREEBSD  -  FREEBSD11  -  FREEBSD10  -  FREEBSD9  -  FREEBSD92  -  FREEBSD91  -  FREEBSD90  -  FREEBSD8  -  FREEBSD82  -  FREEBSD81  -  FREEBSD80  -  FREEBSD7  -  FREEBSD74  -  FREEBSD73  -  FREEBSD72  -  FREEBSD71  -  FREEBSD70  -  FREEBSD6  -  FREEBSD64  -  FREEBSD63  -  FREEBSD62  -  FREEBSD61  -  FREEBSD60  -  FREEBSD5  -  FREEBSD55  -  FREEBSD54  -  FREEBSD53  -  FREEBSD52  -  FREEBSD51  -  FREEBSD50  -  FREEBSD4  -  FREEBSD3  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    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  */
   30 
   31 #include <sys/param.h>
   32 #include <sys/systm.h>
   33 #include <sys/conf.h>
   34 #include <sys/uio.h>
   35 #include <sys/kernel.h>
   36 #include <sys/module.h>
   37 #include <sys/bus.h>
   38 #include <machine/bus.h>
   39 #include <machine/resource.h>
   40 #include <sys/rman.h>
   41 #include <sys/time.h>
   42 #include <sys/joystick.h>
   43 
   44 #include <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 #define CDEV_MAJOR 51
   77 static  d_open_t        joyopen;
   78 static  d_close_t       joyclose;
   79 static  d_read_t        joyread;
   80 static  d_ioctl_t       joyioctl;
   81 
   82 static struct cdevsw joy_cdevsw = {
   83         /* open */      joyopen,
   84         /* close */     joyclose,
   85         /* read */      joyread,
   86         /* write */     nowrite,
   87         /* ioctl */     joyioctl,
   88         /* poll */      nopoll,
   89         /* mmap */      nommap,
   90         /* strategy */  nostrategy,
   91         /* name */      "joy",
   92         /* maj */       CDEV_MAJOR,
   93         /* dump */      nodump,
   94         /* psize */     nopsize,
   95         /* flags */     0,
   96         /* bmaj */      -1
   97 };
   98 
   99 devclass_t joy_devclass;
  100 
  101 static struct isa_pnp_id joy_ids[] = {
  102     {0x0100630e, "CSC0001 PnP Joystick"},       /* CSC0001 */
  103     {0x0101630e, "CSC0101 PnP Joystick"},       /* CSC0101 */
  104     {0x01100002, "ALS0110 PnP Joystick"},       /* @P@1001 */
  105     {0x01200002, "ALS0120 PnP Joystick"},       /* @P@2001 */
  106     {0x01007316, "ESS0001 PnP Joystick"},       /* ESS0001 */
  107     {0x2fb0d041, "Generic PnP Joystick"},       /* PNPb02f */
  108     {0x2200a865, "YMH0022 PnP Joystick"},       /* YMH0022 */
  109     {0x82719304, NULL},                         /* ADS7182 */
  110     {0}
  111 };
  112 
  113 static int
  114 joy_probe (device_t dev)
  115 {
  116     if (ISA_PNP_PROBE(device_get_parent(dev), dev, joy_ids) == ENXIO)
  117         return ENXIO;
  118 #ifdef WANT_JOYSTICK_CONNECTED
  119 #ifdef notyet
  120     outb (dev->id_iobase, 0xff);
  121     DELAY (10000); /*  10 ms delay */
  122     return (inb (dev->id_iobase) & 0x0f) != 0x0f;
  123 #endif
  124 #else
  125     return 0;
  126 #endif
  127 }
  128 
  129 static int
  130 joy_attach (device_t dev)
  131 {
  132     int unit = device_get_unit(dev);
  133     int rid = 0;
  134     struct resource *res;
  135     struct joy_softc *joy = device_get_softc(dev);
  136 
  137     res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, RF_ACTIVE);
  138     if (res == NULL)
  139         return ENXIO;
  140     joy->bt = rman_get_bustag(res);
  141     joy->port = rman_get_bushandle(res);
  142     joy->timeout[0] = joy->timeout[1] = 0;
  143     make_dev(&joy_cdevsw, 0, 0, 0, 0600, "joy%d", unit);
  144     return 0;
  145 }
  146 
  147 static device_method_t joy_methods[] = {
  148     DEVMETHOD(device_probe,     joy_probe),
  149     DEVMETHOD(device_attach,    joy_attach),
  150     { 0, 0 }
  151 };
  152 
  153 static driver_t joy_isa_driver = {
  154     "joy",
  155     joy_methods,
  156     sizeof (struct joy_softc)
  157 };
  158 
  159 DRIVER_MODULE(joy, isa, joy_isa_driver, joy_devclass, 0, 0);
  160 
  161 static int
  162 joyopen(dev_t dev, int flags, int fmt, struct proc *p)
  163 {
  164     int i = joypart (dev);
  165     struct joy_softc *joy = JOY_SOFTC(UNIT(dev));
  166 
  167     if (joy->timeout[i])
  168         return EBUSY;
  169     joy->x_off[i] = joy->y_off[i] = 0;
  170     joy->timeout[i] = JOY_TIMEOUT;
  171     return 0;
  172 }
  173 
  174 static int
  175 joyclose(dev_t dev, int flags, int fmt, struct proc *p)
  176 {
  177     int i = joypart (dev);
  178     struct joy_softc *joy = JOY_SOFTC(UNIT(dev));
  179 
  180     joy->timeout[i] = 0;
  181     return 0;
  182 }
  183 
  184 static int
  185 joyread(dev_t dev, struct uio *uio, int flag)
  186 {
  187     struct joy_softc *joy = JOY_SOFTC(UNIT(dev));
  188     bus_space_handle_t port = joy->port;
  189     bus_space_tag_t bt = joy->bt;
  190     struct timespec t, start, end;
  191     int state = 0;
  192     struct timespec x, y;
  193     struct joystick c;
  194 #ifndef i386
  195     int s;
  196 
  197     s = splhigh();
  198 #else
  199     disable_intr ();
  200 #endif
  201     bus_space_write_1 (bt, port, 0, 0xff);
  202     nanotime(&start);
  203     end.tv_sec = 0;
  204     end.tv_nsec = joy->timeout[joypart(dev)] * 1000;
  205     timespecadd(&end, &start);
  206     t = start;
  207     timespecclear(&x);
  208     timespecclear(&y);
  209     while (timespeccmp(&t, &end, <)) {
  210         state = bus_space_read_1 (bt, port, 0);
  211         if (joypart(dev) == 1)
  212             state >>= 2;
  213         nanotime(&t);
  214         if (!timespecisset(&x) && !(state & 0x01))
  215             x = t;
  216         if (!timespecisset(&y) && !(state & 0x02))
  217             y = t;
  218         if (timespecisset(&x) && timespecisset(&y))
  219             break;
  220     }
  221 #ifndef i386
  222     splx(s);
  223 #else
  224     enable_intr ();
  225 #endif
  226     if (timespecisset(&x)) {
  227         timespecsub(&x, &start);
  228         c.x = joy->x_off[joypart(dev)] + x.tv_nsec / 1000;
  229     } else
  230         c.x = 0x80000000;
  231     if (timespecisset(&y)) {
  232         timespecsub(&y, &start);
  233         c.y = joy->y_off[joypart(dev)] + y.tv_nsec / 1000;
  234     } else
  235         c.y = 0x80000000;
  236     state >>= 4;
  237     c.b1 = ~state & 1;
  238     c.b2 = ~(state >> 1) & 1;
  239     return uiomove ((caddr_t)&c, sizeof(struct joystick), uio);
  240 }
  241 
  242 static int
  243 joyioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
  244 {
  245     struct joy_softc *joy = JOY_SOFTC(UNIT(dev));
  246     int i = joypart (dev);
  247     int x;
  248 
  249     switch (cmd) {
  250     case JOY_SETTIMEOUT:
  251         x = *(int *) data;
  252         if (x < 1 || x > 10000) /* 10ms maximum! */
  253             return EINVAL;
  254         joy->timeout[i] = x;
  255         break;
  256     case JOY_GETTIMEOUT:
  257         *(int *) data = joy->timeout[i];
  258         break;
  259     case JOY_SET_X_OFFSET:
  260         joy->x_off[i] = *(int *) data;
  261         break;
  262     case JOY_SET_Y_OFFSET:
  263         joy->y_off[i] = *(int *) data;
  264         break;
  265     case JOY_GET_X_OFFSET:
  266         *(int *) data = joy->x_off[i];
  267         break;
  268     case JOY_GET_Y_OFFSET:
  269         *(int *) data = joy->y_off[i];
  270         break;
  271     default:
  272         return ENXIO;
  273     }
  274     return 0;
  275 }

Cache object: d999039e13e537578914ff06550236a9


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.