add the freebsd joystick driver; converted by matthieu@abel.laas.fr;

netbsd pr#1916

4 files changed, 282 insertions, 1 deletions

diff --git a/sys/arch/i386/conf/files.i386 b/sys/arch/i386/conf/files.i386
index b693ba9be77..af553dd1c8d 100644
--- a/sys/arch/i386/conf/files.i386
+++ b/sys/arch/i386/conf/files.i386
@@ -114,6 +114,10 @@ file	arch/i386/isa/spkr.c		speaker needs-flag
 device	le at isa, pci: ether, ifnet, isadma
 file	dev/isa/if_le.c			le
 
+# Game adapter (joystick)
+device	joy at isa
+file	arch/i386/isa/joy.c			joy needs-flag
+
 #
 # EISA-only drivers
 #
diff --git a/sys/arch/i386/i386/conf.c b/sys/arch/i386/i386/conf.c
index adaa0da6558..580f60937a2 100644
--- a/sys/arch/i386/i386/conf.c
+++ b/sys/arch/i386/i386/conf.c
@@ -118,6 +118,12 @@ int	nblkdev = sizeof(bdevsw) / sizeof(bdevsw[0]);
         (dev_type_stop((*))) enodev, 0,  dev_init(c,n,select), \
         (dev_type_mmap((*))) enodev, 0 }
 
+/* open, close, read, ioctl */
+#define cdev_joy_init(c,n) { \
+	dev_init(c,n,open), dev_init(c,n,close), dev_init(c,n,read), \
+	(dev_type_write((*))) enodev, dev_init(c,n,ioctl), \
+	(dev_type_stop((*))) enodev, 0, seltrue, (dev_type_mmap((*))) enodev }
+		 
 cdev_decl(cn);
 cdev_decl(ctty);
 #define	mmread	mmrw
@@ -179,6 +185,8 @@ cdev_decl(vnd);
 cdev_decl(audio);
 cdev_decl(svr4_net);
 cdev_decl(ccd);
+#include "joy.h"
+cdev_decl(joy);
 
 /* open, close, read, ioctl */
 cdev_decl(ipl);
@@ -222,7 +230,7 @@ struct cdevsw	cdevsw[] =
 	cdev_fd_init(1,fd),		/* 22: file descriptor pseudo-device */
 	cdev_bpftun_init(NBPFILTER,bpf),/* 23: Berkeley packet filter */
 	cdev_notdef(),			/* 24 */
-	cdev_notdef(),			/* 25 */
+	cdev_joy_init(NJOY,joy),	/* 25: Game adapter */
 	cdev_ocis_init(NPCMCIABUS,pcmciabus), /* 26: PCMCIA Bus */
 	cdev_spkr_init(NSPEAKER,spkr),	/* 27: PC speaker */
 	cdev_lkm_init(NLKM,lkm),	/* 28: loadable module driver */
diff --git a/sys/arch/i386/include/joystick.h b/sys/arch/i386/include/joystick.h
new file mode 100644
index 00000000000..b73fa5c91d7
--- /dev/null
+++ b/sys/arch/i386/include/joystick.h
@@ -0,0 +1,21 @@
+#ifndef _JOY_IOCTL_H_
+#define _JOY_IOCTL_H_
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+struct joystick {
+	int x;
+	int y;
+	int b1;
+	int b2;
+};
+
+#define JOY_SETTIMEOUT    _IOW('J', 1, int)    /* set timeout */
+#define JOY_GETTIMEOUT    _IOR('J', 2, int)    /* get timeout */
+#define JOY_SET_X_OFFSET  _IOW('J', 3, int)    /* set offset on X-axis */
+#define JOY_SET_Y_OFFSET  _IOW('J', 4, int)    /* set offset on X-axis */
+#define JOY_GET_X_OFFSET  _IOR('J', 5, int)    /* get offset on X-axis */
+#define JOY_GET_Y_OFFSET  _IOR('J', 6, int)    /* get offset on Y-axis */
+
+#endif /* _JOY_IOCTL_H_ */
diff --git a/sys/arch/i386/isa/joy.c b/sys/arch/i386/isa/joy.c
new file mode 100644
index 00000000000..e2e73dc238d
--- /dev/null
+++ b/sys/arch/i386/isa/joy.c
@@ -0,0 +1,248 @@
+/*-
+ * 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 <errno.h>
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+
+#include <machine/cpu.h>
+#include <machine/pio.h>
+#include <machine/cpufunc.h>
+
+#include <machine/joystick.h>
+
+#include <dev/isa/isavar.h>
+#include <dev/isa/isareg.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 JOYUNIT(d) minor(d)>>1&3
+
+#ifndef JOY_TIMEOUT
+#define JOY_TIMEOUT   2000	/* 2 milliseconds */
+#endif
+
+struct joy_softc {
+	struct device sc_dev;
+	int     port;
+	int     x_off[2], y_off[2];
+	int     timeout[2];
+};
+
+
+int joyprobe __P((struct device *, void *, void *));
+void joyattach __P((struct device *, struct device *, void *));
+int joyopen __P((dev_t, int, int, struct proc *));
+int joyclose __P((dev_t, int, int, struct proc *));
+static int get_tick __P((void));
+
+struct cfdriver joycd = {
+	NULL, "joy", joyprobe, joyattach, DV_DULL, sizeof(struct joy_softc)
+};
+
+
+int
+joyprobe(parent, match, aux)
+	struct device *parent;
+	void   *match, *aux;
+
+{
+#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
+}
+
+void
+joyattach(parent, self, aux)
+	struct device *parent, *self;
+	void   *aux;
+{
+	struct joy_softc *sc = (void *) self;
+	struct isa_attach_args *ia = aux;
+	int     unit = sc->sc_dev.dv_unit;
+
+	sc->port = ia->ia_iobase;
+	sc->timeout[0] = sc->timeout[1] = 0;
+	printf(": joystick\n", unit);
+}
+
+int
+joyopen(dev, flag, mode, p)
+	dev_t   dev;
+	int     flag, mode;
+	struct proc *p;
+{
+	int     unit = JOYUNIT(dev);
+	int     i = joypart(dev);
+	struct joy_softc *sc;
+
+	if (unit >= joycd.cd_ndevs) {
+		return (ENXIO);
+	}
+	sc = joycd.cd_devs[unit];
+
+	if (sc->timeout[i]) {
+		return EBUSY;
+	}
+	sc->x_off[i] = sc->y_off[i] = 0;
+	sc->timeout[i] = JOY_TIMEOUT;
+	return 0;
+}
+
+int
+joyclose(dev, flag, mode, p)
+	dev_t   dev;
+	int     flag, mode;
+	struct proc *p;
+{
+	int     unit = JOYUNIT(dev);
+	int     i = joypart(dev);
+	struct joy_softc *sc = joycd.cd_devs[unit];
+
+	sc->timeout[i] = 0;
+	return 0;
+}
+
+int
+joyread(dev, uio, flag)
+	dev_t   dev;
+	struct uio *uio;
+	int     flag;
+{
+	int     unit = JOYUNIT(dev);
+	struct joy_softc *sc = joycd.cd_devs[unit];
+	int     port = sc->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(sc->timeout[joypart(dev)]);
+	while (t0 - t1 < i) {
+		state = inb(port);
+		if (joypart(dev) == 1)
+			state >>= 2;
+		t1 = get_tick();
+		if (t1 > t0)
+			t1 -= TIMER_FREQ / hz;
+		if (!x && !(state & 0x01))
+			x = t1;
+		if (!y && !(state & 0x02))
+			y = t1;
+		if (x && y)
+			break;
+	}
+	enable_intr();
+	c.x = x ? sc->x_off[joypart(dev)] + ticks2usec(t0 - x) : 0x80000000;
+	c.y = y ? sc->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);
+}
+
+int
+joyioctl(dev, cmd, data, flag, p)
+	dev_t   dev;
+	u_long  cmd;
+	caddr_t data;
+	int     flag;
+	struct proc *p;
+{
+	int     unit = JOYUNIT(dev);
+	int     i = joypart(dev);
+	struct joy_softc *sc = joycd.cd_devs[unit];
+	int     x;
+
+	switch (cmd) {
+	case JOY_SETTIMEOUT:
+		x = *(int *) data;
+		if (x < 1 || x > 10000)	/* 10ms maximum! */
+			return EINVAL;
+		sc->timeout[i] = x;
+		break;
+	case JOY_GETTIMEOUT:
+		*(int *) data = sc->timeout[i];
+		break;
+	case JOY_SET_X_OFFSET:
+		sc->x_off[i] = *(int *) data;
+		break;
+	case JOY_SET_Y_OFFSET:
+		sc->y_off[i] = *(int *) data;
+		break;
+	case JOY_GET_X_OFFSET:
+		*(int *) data = sc->x_off[i];
+		break;
+	case JOY_GET_Y_OFFSET:
+		*(int *) data = sc->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;
+}