Machine-independent PC-like keyboard driver; from NetBSD. XXX - Not used

anywhere quite yet, but useful to have these files in the tree while we work
towards wscons for i386 and alpha.

1 files changed, 332 insertions, 0 deletions

diff --git a/sys/dev/pckbc/psm.c b/sys/dev/pckbc/psm.c
new file mode 100644
index 00000000000..16ff008f687
--- /dev/null
+++ b/sys/dev/pckbc/psm.c
@@ -0,0 +1,332 @@
+/* $NetBSD: psm.c,v 1.11 2000/06/05 22:20:57 sommerfeld Exp $ */
+
+/*-
+ * Copyright (c) 1994 Charles M. Hannum.
+ * Copyright (c) 1992, 1993 Erik Forsberg.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY ``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 I 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 <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/ioctl.h>
+
+#include <machine/bus.h>
+
+#include <dev/ic/pckbcvar.h>
+
+#include <dev/pckbc/psmreg.h>
+
+#include <dev/wscons/wsconsio.h>
+#include <dev/wscons/wsmousevar.h>
+
+struct pms_softc {		/* driver status information */
+	struct device sc_dev;
+
+	pckbc_tag_t sc_kbctag;
+	int sc_kbcslot;
+
+	int sc_enabled;		/* input enabled? */
+	int inputstate;
+	u_int buttons, oldbuttons;	/* mouse button status */
+	signed char dx;
+
+	struct device *sc_wsmousedev;
+};
+
+int pmsprobe __P((struct device *, void *, void *));
+void pmsattach __P((struct device *, struct device *, void *));
+void pmsinput __P((void *, int));
+
+struct cfattach pms_ca = {
+	sizeof(struct pms_softc), pmsprobe, pmsattach,
+};
+
+int	pms_enable __P((void *));
+int	pms_ioctl __P((void *, u_long, caddr_t, int, struct proc *));
+void	pms_disable __P((void *));
+
+const struct wsmouse_accessops pms_accessops = {
+	pms_enable,
+	pms_ioctl,
+	pms_disable,
+};
+
+int
+pmsprobe(parent, match, aux)
+	struct device *parent;
+	void *match;
+	void *aux;
+{
+	struct pckbc_attach_args *pa = aux;
+	u_char cmd[1], resp[2];
+	int res;
+
+	if (pa->pa_slot != PCKBC_AUX_SLOT)
+		return (0);
+
+	/* Flush any garbage. */
+	pckbc_flush(pa->pa_tag, pa->pa_slot);
+
+	/* reset the device */
+	cmd[0] = PMS_RESET;
+	res = pckbc_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 2, resp, 1);
+	if (res) {
+#ifdef DEBUG
+		printf("pmsprobe: reset error %d\n", res);
+#endif
+		return (0);
+	}
+	if (resp[0] != PMS_RSTDONE) {
+		printf("pmsprobe: reset response 0x%x\n", resp[0]);
+		return (0);
+	}
+
+	/* get type number (0 = mouse) */
+	if (resp[1] != 0) {
+#ifdef DEBUG
+		printf("pmsprobe: type 0x%x\n", resp[1]);
+#endif
+		return (0);
+	}
+
+	return (10);
+}
+
+void
+pmsattach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	struct pms_softc *sc = (void *)self;
+	struct pckbc_attach_args *pa = aux;
+	struct wsmousedev_attach_args a;
+	u_char cmd[1], resp[2];
+	int res;
+
+	sc->sc_kbctag = pa->pa_tag;
+	sc->sc_kbcslot = pa->pa_slot;
+
+	printf("\n");
+
+	/* Flush any garbage. */
+	pckbc_flush(pa->pa_tag, pa->pa_slot);
+
+	/* reset the device */
+	cmd[0] = PMS_RESET;
+	res = pckbc_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 2, resp, 1);
+#ifdef DEBUG
+	if (res || resp[0] != PMS_RSTDONE || resp[1] != 0) {
+		printf("pmsattach: reset error\n");
+		return;
+	}
+#endif
+
+	sc->inputstate = 0;
+	sc->oldbuttons = 0;
+
+	pckbc_set_inputhandler(sc->sc_kbctag, sc->sc_kbcslot,
+			       pmsinput, sc, sc->sc_dev.dv_xname);
+
+	a.accessops = &pms_accessops;
+	a.accesscookie = sc;
+
+	/*
+	 * Attach the wsmouse, saving a handle to it.
+	 * Note that we don't need to check this pointer against NULL
+	 * here or in pmsintr, because if this fails pms_enable() will
+	 * never be called, so pmsinput() will never be called.
+	 */
+	sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint);
+
+	/* no interrupts until enabled */
+	cmd[0] = PMS_DEV_DISABLE;
+	res = pckbc_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 0, 0, 0);
+	if (res)
+		printf("pmsattach: disable error\n");
+	pckbc_slot_enable(sc->sc_kbctag, sc->sc_kbcslot, 0);
+}
+
+int
+pms_enable(v)
+	void *v;
+{
+	struct pms_softc *sc = v;
+	u_char cmd[1];
+	int res;
+
+	if (sc->sc_enabled)
+		return EBUSY;
+
+	sc->sc_enabled = 1;
+	sc->inputstate = 0;
+	sc->oldbuttons = 0;
+
+	pckbc_slot_enable(sc->sc_kbctag, sc->sc_kbcslot, 1);
+
+	cmd[0] = PMS_DEV_ENABLE;
+	res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, cmd, 1, 0, 1, 0);
+	if (res)
+		printf("pms_enable: command error\n");
+#if 0
+	{
+		u_char scmd[2];
+
+		scmd[0] = PMS_SET_RES;
+		scmd[1] = 3; /* 8 counts/mm */
+		res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, scmd,
+					2, 0, 1, 0);
+		if (res)
+			printf("pms_enable: setup error1 (%d)\n", res);
+
+		scmd[0] = PMS_SET_SCALE21;
+		res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, scmd,
+					1, 0, 1, 0);
+		if (res)
+			printf("pms_enable: setup error2 (%d)\n", res);
+
+		scmd[0] = PMS_SET_SAMPLE;
+		scmd[1] = 100; /* 100 samples/sec */
+		res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, scmd,
+					2, 0, 1, 0);
+		if (res)
+			printf("pms_enable: setup error3 (%d)\n", res);
+	}
+#endif
+
+	return 0;
+}
+
+void
+pms_disable(v)
+	void *v;
+{
+	struct pms_softc *sc = v;
+	u_char cmd[1];
+	int res;
+
+	cmd[0] = PMS_DEV_DISABLE;
+	res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, cmd, 1, 0, 1, 0);
+	if (res)
+		printf("pms_disable: command error\n");
+
+	pckbc_slot_enable(sc->sc_kbctag, sc->sc_kbcslot, 0);
+
+	sc->sc_enabled = 0;
+}
+
+int
+pms_ioctl(v, cmd, data, flag, p)
+	void *v;
+	u_long cmd;
+	caddr_t data;
+	int flag;
+	struct proc *p;
+{
+	struct pms_softc *sc = v;
+	u_char kbcmd[2];
+	int i;
+
+	switch (cmd) {
+	case WSMOUSEIO_GTYPE:
+		*(u_int *)data = WSMOUSE_TYPE_PS2;
+		break;
+		
+	case WSMOUSEIO_SRES:
+		i = (*(u_int *)data - 12) / 25;
+		
+		if (i < 0)
+			i = 0;
+			
+		if (i > 3)
+			i = 3;
+
+		kbcmd[0] = PMS_SET_RES;
+		kbcmd[1] = i;			
+		i = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, kbcmd, 
+		    2, 0, 1, 0);
+		
+		if (i)
+			printf("pms_ioctl: SET_RES command error\n");
+		break;
+		
+	default:
+		return (-1);
+	}
+	return (0);
+}
+
+/* Masks for the first byte of a packet */
+#define PS2LBUTMASK 0x01
+#define PS2RBUTMASK 0x02
+#define PS2MBUTMASK 0x04
+
+void pmsinput(vsc, data)
+void *vsc;
+int data;
+{
+	struct pms_softc *sc = vsc;
+	signed char dy;
+	u_int changed;
+
+	if (!sc->sc_enabled) {
+		/* Interrupts are not expected.  Discard the byte. */
+		return;
+	}
+
+	switch (sc->inputstate) {
+
+	case 0:
+		if ((data & 0xc0) == 0) { /* no ovfl, bit 3 == 1 too? */
+			sc->buttons = ((data & PS2LBUTMASK) ? 0x1 : 0) |
+			    ((data & PS2MBUTMASK) ? 0x2 : 0) |
+			    ((data & PS2RBUTMASK) ? 0x4 : 0);
+			++sc->inputstate;
+		}
+		break;
+
+	case 1:
+		sc->dx = data;
+		/* Bounding at -127 avoids a bug in XFree86. */
+		sc->dx = (sc->dx == -128) ? -127 : sc->dx;
+		++sc->inputstate;
+		break;
+
+	case 2:
+		dy = data;
+		dy = (dy == -128) ? -127 : dy;
+		sc->inputstate = 0;
+
+		changed = (sc->buttons ^ sc->oldbuttons);
+		sc->oldbuttons = sc->buttons;
+
+		if (sc->dx || dy || changed)
+			wsmouse_input(sc->sc_wsmousedev,
+				      sc->buttons, sc->dx, dy, 0,
+				      WSMOUSE_INPUT_DELTA);
+		break;
+	}
+
+	return;
+}
+
+struct cfdriver pms_cd = {
+	NULL, "pms", DV_DULL
+};