53ac6efbd8
That's EVERY SINGLE driver that has an entry in conf.c.. my next trick will be to define cdevsw[] and bdevsw[] as empty arrays and remove all those DAMNED defines as well.. Each of these drivers has a SYSINIT linker set entry that comes in very early.. and asks teh driver to add it's own entry to the two devsw[] tables. some slight reworking of the commits from yesterday (added the SYSINIT stuff and some usually wrong but token DEVFS entries to all these devices. BTW does anyone know where the 'ata' entries in conf.c actually reside? seems we don't actually have a 'ataopen() etc... If you want to add a new device in conf.c please make sure I know so I can keep it up to date too.. as before, this is all dependent on #if defined(JREMOD) (and #ifdef DEVFS in parts)
251 lines
6.3 KiB
C
251 lines
6.3 KiB
C
/*-
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* Copyright (c) 1995 Jean-Marc Zucconi
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "joy.h"
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#if NJOY > 0
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#include <errno.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <machine/joystick.h>
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#include <i386/isa/isa.h>
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#include <i386/isa/isa_device.h>
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#include <i386/isa/timerreg.h>
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#ifdef JREMOD
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#ifdef DEVFS
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#include <sys/devfsext.h>
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#endif /*DEVFS*/
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#define CDEV_MAJOR 51
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#endif /*JREMOD*/
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/* The game port can manage 4 buttons and 4 variable resistors (usually 2
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* joysticks, each with 2 buttons and 2 pots.) via the port at address 0x201.
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* Getting the state of the buttons is done by reading the game port:
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* buttons 1-4 correspond to bits 4-7 and resistors 1-4 (X1, Y1, X2, Y2)
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* to bits 0-3.
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* if button 1 (resp 2, 3, 4) is pressed, the bit 4 (resp 5, 6, 7) is set to 0
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* to get the value of a resistor, write the value 0xff at port and
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* wait until the corresponding bit returns to 0.
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*/
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/* the formulae below only work if u is ``not too large''. See also
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* the discussion in microtime.s */
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#define usec2ticks(u) (((u) * 19549)>>14)
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#define ticks2usec(u) (((u) * 3433)>>12)
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#define joypart(d) minor(d)&1
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#define UNIT(d) minor(d)>>1&3
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#ifndef JOY_TIMEOUT
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#define JOY_TIMEOUT 2000 /* 2 milliseconds */
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#endif
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static struct {
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int port;
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int x_off[2], y_off[2];
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int timeout[2];
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} joy[NJOY];
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extern int timer0_max_count;
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int joyprobe (struct isa_device *), joyattach (struct isa_device *);
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struct isa_driver joydriver = {joyprobe, joyattach, "joy"};
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static int get_tick ();
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int
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joyprobe (struct isa_device *dev)
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{
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#ifdef WANT_JOYSTICK_CONNECTED
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outb (dev->id_iobase, 0xff);
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DELAY (10000); /* 10 ms delay */
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return (inb (dev->id_iobase) & 0x0f) != 0x0f;
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#else
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return 1;
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#endif
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}
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int
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joyattach (struct isa_device *dev)
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{
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joy[dev->id_unit].port = dev->id_iobase;
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joy[dev->id_unit].timeout[0] = joy[dev->id_unit].timeout[1] = 0;
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printf("joy%d: joystick\n", dev->id_unit);
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return 1;
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}
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int
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joyopen (dev_t dev, int flags, int fmt, struct proc *p)
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{
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int unit = UNIT (dev);
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int i = joypart (dev);
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if (joy[unit].timeout[i])
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return EBUSY;
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joy[unit].x_off[i] = joy[unit].y_off[i] = 0;
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joy[unit].timeout[i] = JOY_TIMEOUT;
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return 0;
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}
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int
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joyclose (dev_t dev, int flags, int fmt, struct proc *p)
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{
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int unit = UNIT (dev);
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int i = joypart (dev);
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joy[unit].timeout[i] = 0;
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return 0;
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}
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int
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joyread (dev_t dev, struct uio *uio, int flag)
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{
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int unit = UNIT(dev);
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int port = joy[unit].port;
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int i, t0, t1;
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int state = 0, x = 0, y = 0;
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struct joystick c;
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disable_intr ();
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outb (port, 0xff);
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t0 = get_tick ();
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t1 = t0;
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i = usec2ticks(joy[unit].timeout[joypart(dev)]);
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while (t0-t1 < i) {
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state = inb (port);
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if (joypart(dev) == 1)
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state >>= 2;
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t1 = get_tick ();
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if (t1 > t0)
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t1 -= timer0_max_count;
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if (!x && !(state & 0x01))
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x = t1;
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if (!y && !(state & 0x02))
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y = t1;
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if (x && y)
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break;
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}
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enable_intr ();
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c.x = x ? joy[unit].x_off[joypart(dev)] + ticks2usec(t0-x) : 0x80000000;
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c.y = y ? joy[unit].y_off[joypart(dev)] + ticks2usec(t0-y) : 0x80000000;
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state >>= 4;
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c.b1 = ~state & 1;
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c.b2 = ~(state >> 1) & 1;
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return uiomove ((caddr_t)&c, sizeof(struct joystick), uio);
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}
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int joyioctl (dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
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{
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int unit = UNIT (dev);
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int i = joypart (dev);
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int x;
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switch (cmd) {
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case JOY_SETTIMEOUT:
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x = *(int *) data;
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if (x < 1 || x > 10000) /* 10ms maximum! */
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return EINVAL;
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joy[unit].timeout[i] = x;
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break;
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case JOY_GETTIMEOUT:
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*(int *) data = joy[unit].timeout[i];
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break;
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case JOY_SET_X_OFFSET:
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joy[unit].x_off[i] = *(int *) data;
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break;
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case JOY_SET_Y_OFFSET:
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joy[unit].y_off[i] = *(int *) data;
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break;
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case JOY_GET_X_OFFSET:
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*(int *) data = joy[unit].x_off[i];
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break;
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case JOY_GET_Y_OFFSET:
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*(int *) data = joy[unit].y_off[i];
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break;
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default:
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return ENXIO;
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}
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return 0;
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}
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static int
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get_tick ()
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{
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int low, high;
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outb (TIMER_MODE, TIMER_SEL0);
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low = inb (TIMER_CNTR0);
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high = inb (TIMER_CNTR0);
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return (high << 8) | low;
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}
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#ifdef JREMOD
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struct cdevsw joy_cdevsw =
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{ joyopen, joyclose, joyread, nowrite, /*51*/
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joyioctl, nostop, nullreset, nodevtotty,/*joystick */
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seltrue, nommap, NULL};
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static joy_devsw_installed = 0;
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static void joy_drvinit(void *unused)
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{
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dev_t dev;
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if( ! joy_devsw_installed ) {
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dev = makedev(CDEV_MAJOR,0);
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cdevsw_add(&dev,&joy_cdevsw,NULL);
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joy_devsw_installed = 1;
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#ifdef DEVFS
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{
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int x;
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/* default for a simple device with no probe routine (usually delete this) */
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x=devfs_add_devsw(
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/* path name devsw minor type uid gid perm*/
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"/", "joy", major(dev), 0, DV_CHR, 0, 0, 0600);
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}
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}
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#endif
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}
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SYSINIT(joydev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,joy_drvinit,NULL)
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#endif /* JREMOD */
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#endif /* NJOY > 0 */
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