mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
2447bec829
The cdevsw_add() function now finds the major number(s) in the
struct cdevsw passed to it. cdevsw_add_generic() is no longer
needed, cdevsw_add() does the same thing.
cdevsw_add() will print an message if the d_maj field looks bogus.
Remove nblkdev and nchrdev variables. Most places they were used
bogusly. Instead check a dev_t for validity by seeing if devsw()
or bdevsw() returns NULL.
Move bdevsw() and devsw() functions to kern/kern_conf.c
Bump __FreeBSD_version to 400006
This commit removes:
72 bogus makedev() calls
26 bogus SYSINIT functions
if_xe.c bogusly accessed cdevsw[], author/maintainer please fix.
I4b and vinum not changed. Patches emailed to authors. LINT
probably broken until they catch up.
306 lines
7.2 KiB
C
306 lines
7.2 KiB
C
/*-
|
|
* Copyright (c) 1995 Jean-Marc Zucconi
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer
|
|
* in this position and unchanged.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software withough specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
#include "joy.h"
|
|
|
|
#if NJOY > 0
|
|
|
|
#include "opt_devfs.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/kernel.h>
|
|
#ifdef DEVFS
|
|
#include <sys/devfsext.h>
|
|
#endif /*DEVFS*/
|
|
#include <sys/uio.h>
|
|
|
|
#include <machine/clock.h>
|
|
#include <machine/joystick.h>
|
|
|
|
#include <i386/isa/isa.h>
|
|
#include <i386/isa/isa_device.h>
|
|
#include <i386/isa/timerreg.h>
|
|
|
|
/* The game port can manage 4 buttons and 4 variable resistors (usually 2
|
|
* joysticks, each with 2 buttons and 2 pots.) via the port at address 0x201.
|
|
* Getting the state of the buttons is done by reading the game port:
|
|
* buttons 1-4 correspond to bits 4-7 and resistors 1-4 (X1, Y1, X2, Y2)
|
|
* to bits 0-3.
|
|
* if button 1 (resp 2, 3, 4) is pressed, the bit 4 (resp 5, 6, 7) is set to 0
|
|
* to get the value of a resistor, write the value 0xff at port and
|
|
* wait until the corresponding bit returns to 0.
|
|
*/
|
|
|
|
|
|
/* the formulae below only work if u is ``not too large''. See also
|
|
* the discussion in microtime.s */
|
|
#define usec2ticks(u) (((u) * 19549)>>14)
|
|
#define ticks2usec(u) (((u) * 3433)>>12)
|
|
|
|
|
|
#define joypart(d) (minor(d)&1)
|
|
#define UNIT(d) ((minor(d)>>1)&3)
|
|
#ifndef JOY_TIMEOUT
|
|
#define JOY_TIMEOUT 2000 /* 2 milliseconds */
|
|
#endif
|
|
|
|
static struct {
|
|
int port;
|
|
int x_off[2], y_off[2];
|
|
int timeout[2];
|
|
#ifdef DEVFS
|
|
void *devfs_token;
|
|
#endif
|
|
} joy[NJOY];
|
|
|
|
|
|
static int joyprobe (struct isa_device *);
|
|
static int joyattach (struct isa_device *);
|
|
|
|
struct isa_driver joydriver = {joyprobe, joyattach, "joy"};
|
|
|
|
#define CDEV_MAJOR 51
|
|
static d_open_t joyopen;
|
|
static d_close_t joyclose;
|
|
static d_read_t joyread;
|
|
static d_ioctl_t joyioctl;
|
|
|
|
static struct cdevsw joy_cdevsw = {
|
|
/* open */ joyopen,
|
|
/* close */ joyclose,
|
|
/* read */ joyread,
|
|
/* write */ nowrite,
|
|
/* ioctl */ joyioctl,
|
|
/* stop */ nostop,
|
|
/* reset */ noreset,
|
|
/* devtotty */ nodevtotty,
|
|
/* poll */ nopoll,
|
|
/* mmap */ nommap,
|
|
/* strategy */ nostrategy,
|
|
/* name */ "joy",
|
|
/* parms */ noparms,
|
|
/* maj */ CDEV_MAJOR,
|
|
/* dump */ nodump,
|
|
/* psize */ nopsize,
|
|
/* flags */ 0,
|
|
/* maxio */ 0,
|
|
/* bmaj */ -1
|
|
};
|
|
|
|
static int get_tick __P((void));
|
|
|
|
|
|
static int
|
|
joyprobe (struct isa_device *dev)
|
|
{
|
|
static int once;
|
|
|
|
if (!once++)
|
|
cdevsw_add(&joy_cdevsw);
|
|
#ifdef WANT_JOYSTICK_CONNECTED
|
|
outb (dev->id_iobase, 0xff);
|
|
DELAY (10000); /* 10 ms delay */
|
|
return (inb (dev->id_iobase) & 0x0f) != 0x0f;
|
|
#else
|
|
return 1;
|
|
#endif
|
|
}
|
|
|
|
static int
|
|
joyattach (struct isa_device *dev)
|
|
{
|
|
int unit = dev->id_unit;
|
|
|
|
joy[unit].port = dev->id_iobase;
|
|
joy[unit].timeout[0] = joy[unit].timeout[1] = 0;
|
|
printf("joy%d: joystick\n", unit);
|
|
#ifdef DEVFS
|
|
joy[dev->id_unit].devfs_token =
|
|
devfs_add_devswf(&joy_cdevsw, 0, DV_CHR, 0, 0,
|
|
0600, "joy%d", unit);
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
joyopen (dev_t dev, int flags, int fmt, struct proc *p)
|
|
{
|
|
int unit = UNIT (dev);
|
|
int i = joypart (dev);
|
|
|
|
if (joy[unit].timeout[i])
|
|
return EBUSY;
|
|
joy[unit].x_off[i] = joy[unit].y_off[i] = 0;
|
|
joy[unit].timeout[i] = JOY_TIMEOUT;
|
|
return 0;
|
|
}
|
|
static int
|
|
joyclose (dev_t dev, int flags, int fmt, struct proc *p)
|
|
{
|
|
int unit = UNIT (dev);
|
|
int i = joypart (dev);
|
|
|
|
joy[unit].timeout[i] = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
joyread (dev_t dev, struct uio *uio, int flag)
|
|
{
|
|
int unit = UNIT(dev);
|
|
int port = joy[unit].port;
|
|
int i, t0, t1;
|
|
int state = 0, x = 0, y = 0;
|
|
struct joystick c;
|
|
|
|
disable_intr ();
|
|
outb (port, 0xff);
|
|
t0 = get_tick ();
|
|
t1 = t0;
|
|
i = usec2ticks(joy[unit].timeout[joypart(dev)]);
|
|
while (t0-t1 < i) {
|
|
state = inb (port);
|
|
if (joypart(dev) == 1)
|
|
state >>= 2;
|
|
t1 = get_tick ();
|
|
if (t1 > t0)
|
|
t1 -= timer0_max_count;
|
|
if (!x && !(state & 0x01))
|
|
x = t1;
|
|
if (!y && !(state & 0x02))
|
|
y = t1;
|
|
if (x && y)
|
|
break;
|
|
}
|
|
enable_intr ();
|
|
c.x = x ? joy[unit].x_off[joypart(dev)] + ticks2usec(t0-x) : 0x80000000;
|
|
c.y = y ? joy[unit].y_off[joypart(dev)] + ticks2usec(t0-y) : 0x80000000;
|
|
state >>= 4;
|
|
c.b1 = ~state & 1;
|
|
c.b2 = ~(state >> 1) & 1;
|
|
return uiomove ((caddr_t)&c, sizeof(struct joystick), uio);
|
|
}
|
|
|
|
static int
|
|
joyioctl (dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
|
|
{
|
|
int unit = UNIT (dev);
|
|
int i = joypart (dev);
|
|
int x;
|
|
|
|
switch (cmd) {
|
|
case JOY_SETTIMEOUT:
|
|
x = *(int *) data;
|
|
if (x < 1 || x > 10000) /* 10ms maximum! */
|
|
return EINVAL;
|
|
joy[unit].timeout[i] = x;
|
|
break;
|
|
case JOY_GETTIMEOUT:
|
|
*(int *) data = joy[unit].timeout[i];
|
|
break;
|
|
case JOY_SET_X_OFFSET:
|
|
joy[unit].x_off[i] = *(int *) data;
|
|
break;
|
|
case JOY_SET_Y_OFFSET:
|
|
joy[unit].y_off[i] = *(int *) data;
|
|
break;
|
|
case JOY_GET_X_OFFSET:
|
|
*(int *) data = joy[unit].x_off[i];
|
|
break;
|
|
case JOY_GET_Y_OFFSET:
|
|
*(int *) data = joy[unit].y_off[i];
|
|
break;
|
|
default:
|
|
return ENXIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
get_tick ()
|
|
{
|
|
int low, high;
|
|
|
|
outb (TIMER_MODE, TIMER_SEL0);
|
|
low = inb (TIMER_CNTR0);
|
|
high = inb (TIMER_CNTR0);
|
|
|
|
return (high << 8) | low;
|
|
}
|
|
|
|
#ifdef JOY_MODULE
|
|
|
|
#include <sys/exec.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/lkm.h>
|
|
|
|
MOD_DEV (joy, LM_DT_CHAR, CDEV_MAJOR, &joy_cdevsw);
|
|
|
|
static struct isa_device dev = {0, &joydriver, IO_GAME, 0, -1, (caddr_t) 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0};
|
|
|
|
static int
|
|
joy_load (struct lkm_table *lkmtp, int cmd)
|
|
{
|
|
if (joyprobe (&dev)) {
|
|
joyattach (&dev);
|
|
/* joy_drvinit (0);*/
|
|
uprintf ("Joystick driver loaded\n");
|
|
return 0;
|
|
} else {
|
|
uprintf ("Joystick driver: probe failed\n");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static int
|
|
joy_unload (struct lkm_table *lkmtp, int cmd)
|
|
{
|
|
uprintf ("Joystick driver unloaded\n");
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
joy_stat (struct lkm_table *lkmtp, int cmd)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
joy_mod (struct lkm_table *lkmtp, int cmd, int ver)
|
|
{
|
|
MOD_DISPATCH(joy, lkmtp, cmd, ver,
|
|
joy_load, joy_unload, joy_stat);
|
|
}
|
|
|
|
#endif /* JOY_MODULE */
|
|
|
|
|
|
#endif /* NJOY > 0 */
|