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Annotation of sys/arch/i386/isa/joyreg.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: joyreg.h,v 1.4 2002/06/02 22:49:59 deraadt Exp $      */
        !             2: /*     $NetBSD: joy.c,v 1.3 1996/05/05 19:46:15 christos Exp $ */
        !             3:
        !             4: /*-
        !             5:  * Copyright (c) 1995 Jean-Marc Zucconi
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Ported to NetBSD by Matthieu Herrb <matthieu@laas.fr>
        !             9:  *
        !            10:  * Redistribution and use in source and binary forms, with or without
        !            11:  * modification, are permitted provided that the following conditions
        !            12:  * are met:
        !            13:  * 1. Redistributions of source code must retain the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer
        !            15:  *    in this position and unchanged.
        !            16:  * 2. Redistributions in binary form must reproduce the above copyright
        !            17:  *    notice, this list of conditions and the following disclaimer in the
        !            18:  *    documentation and/or other materials provided with the distribution.
        !            19:  * 3. The name of the author may not be used to endorse or promote products
        !            20:  *    derived from this software without specific prior written permission
        !            21:  *
        !            22:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            23:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            24:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            25:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
        !            26:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            27:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            28:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            29:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            30:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            31:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            32:  *
        !            33:  */
        !            34:
        !            35: /*
        !            36:  * The game port can manage 4 buttons and 4 variable resistors (usually 2
        !            37:  * joysticks, each with 2 buttons and 2 pots.) via the port at address 0x201.
        !            38:  * Getting the state of the buttons is done by reading the game port;
        !            39:  * buttons 1-4 correspond to bits 4-7 and resistors 1-4 (X1, Y1, X2, Y2)
        !            40:  * to bits 0-3.  If button 1 (resp 2, 3, 4) is pressed, the bit 4 (resp 5,
        !            41:  * 6, 7) is set to 0 to get the value of a resistor, write the value 0xff
        !            42:  * at port and wait until the corresponding bit returns to 0.
        !            43:  */
        !            44:
        !            45: /*
        !            46:  * The formulae below only work if u is ``not too large''.  See also
        !            47:  * the discussion in microtime.s
        !            48:  */
        !            49: #define USEC2TICKS(u)  (((u) * 19549) >> 14)
        !            50: #define TICKS2USEC(u)  (((u) * 3433) >> 12)
        !            51:
        !            52:
        !            53: #define JOYPART(d) (minor(d) & 1)
        !            54: #define JOYUNIT(d) minor(d) >> 1 & 3
        !            55:
        !            56: #ifndef JOY_TIMEOUT
        !            57: #define JOY_TIMEOUT   2000     /* 2 milliseconds */
        !            58: #endif
        !            59:
        !            60: #define JOY_NPORTS    1
        !            61:
        !            62: struct joy_softc {
        !            63:        struct  device sc_dev;
        !            64:        int     port;
        !            65:        int     x_off[2], y_off[2];
        !            66:        int     timeout[2];
        !            67: };
        !            68:
        !            69: int            joyopen(dev_t, int, int, struct proc *);
        !            70: int            joyclose(dev_t, int, int, struct proc *);