Initial source

1 files changed, 560 insertions, 0 deletions

diff --git a/i386/i386at/kd_event.c b/i386/i386at/kd_event.c
new file mode 100644
index 0000000..9ee4374
--- /dev/null
+++ b/i386/i386at/kd_event.c
@@ -0,0 +1,560 @@
+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/* **********************************************************************
+ File:         kd_event.c
+ Description:  Driver for event interface to keyboard.
+
+ $ Header: $
+
+ Copyright Ing. C. Olivetti & C. S.p.A. 1989.  All rights reserved.
+********************************************************************** */
+/*
+  Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc.,
+Cupertino, California.
+
+		All Rights Reserved
+
+  Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appears in all
+copies and that both the copyright notice and this permission notice
+appear in supporting documentation, and that the name of Olivetti
+not be used in advertising or publicity pertaining to distribution
+of the software without specific, written prior permission.
+
+  OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
+IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
+CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
+NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
+WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include <mach/boolean.h>
+#include <sys/types.h>
+#ifdef	MACH_KERNEL
+#include <device/errno.h>
+#include <device/io_req.h>
+#else	MACH_KERNEL
+#include <sys/file.h>
+#include <sys/errno.h>
+#include <kern/thread.h>
+#include <sys/user.h>
+#include <sys/proc.h>
+#include <sys/kernel.h>
+#include <sys/ioctl.h>
+#include <sys/tty.h>
+#endif	MACH_KERNEL
+#include <i386/machspl.h>
+#include <i386at/kd.h>
+#include <i386at/kd_queue.h>
+
+/*
+ * Code for /dev/kbd.   The interrupt processing is done in kd.c,
+ * which calls into this module to enqueue scancode events when
+ * the keyboard is in Event mode.
+ */
+
+/*
+ * Note: These globals are protected by raising the interrupt level
+ * via SPLKD.
+ */
+
+kd_event_queue kbd_queue;		/* queue of keyboard events */
+#ifdef	MACH_KERNEL
+queue_head_t	kbd_read_queue = { &kbd_read_queue, &kbd_read_queue };
+#else	MACH_KERNEL
+struct proc *kbd_sel = 0;		/* selecting process, if any */
+short kbdpgrp = 0;		/* process group leader when dev is open */
+
+int kbdflag = 0;
+#define KBD_COLL	1		/* select collision */
+#define KBD_ASYNC	2		/* user wants asynch notification */
+#define KBD_NBIO	4		/* user wants non-blocking I/O */
+#endif	MACH_KERNEL
+
+
+void kbd_enqueue();
+#ifdef	MACH_KERNEL
+io_return_t X_kdb_enter_init();
+io_return_t X_kdb_exit_init();
+#endif	MACH_KERNEL
+
+static boolean_t initialized = FALSE;
+
+
+/*
+ * kbdinit - set up event queue.
+ */
+
+kbdinit()
+{
+	spl_t s = SPLKD();
+	
+	if (!initialized) {
+		kdq_reset(&kbd_queue);
+		initialized = TRUE;
+	}
+	splx(s);
+}
+
+
+/*
+ * kbdopen - Verify that open is read-only and remember process
+ * group leader.
+ */
+
+/*ARGSUSED*/
+kbdopen(dev, flags)
+	dev_t dev;
+	int flags;
+{
+	kbdinit();
+
+#ifdef	MACH_KERNEL
+#else	MACH_KERNEL
+	if (flags & FWRITE)
+		return(ENODEV);
+	
+	if (kbdpgrp == 0)
+		kbdpgrp = u.u_procp->p_pgrp;
+#endif	MACH_KERNEL
+	return(0);
+}
+
+
+/*
+ * kbdclose - Make sure that the kd driver is in Ascii mode and
+ * reset various flags.
+ */
+
+/*ARGSUSED*/
+kbdclose(dev, flags)
+	dev_t dev;
+	int flags;
+{
+	spl_t s = SPLKD();
+
+	kb_mode = KB_ASCII;
+#ifdef	MACH_KERNEL
+#else	MACH_KERNEL
+	kbdpgrp = 0;
+	kbdflag = 0;
+	kbd_sel = 0;
+#endif	MACH_KERNEL
+	kdq_reset(&kbd_queue);
+	splx(s);
+}
+
+
+#ifdef	MACH_KERNEL
+io_return_t kbdgetstat(dev, flavor, data, count)
+	dev_t		dev;
+	int		flavor;
+	int *		data;		/* pointer to OUT array */
+	unsigned int	*count;		/* OUT */
+{
+	io_return_t	result;
+
+	switch (flavor) {
+	    case KDGKBDTYPE:
+		*data = KB_VANILLAKB;
+		*count = 1;
+		break;
+	    default:
+		return (D_INVALID_OPERATION);
+	}
+	return (D_SUCCESS);
+}
+
+io_return_t kbdsetstat(dev, flavor, data, count)
+	dev_t		dev;
+	int		flavor;
+	int *		data;
+	unsigned int	count;
+{
+	io_return_t	result;
+
+	switch (flavor) {
+	    case KDSKBDMODE:
+		kb_mode = *data;
+		/* XXX - what to do about unread events? */
+		/* XXX - should check that 'data' contains an OK valud */
+		break;
+	    case K_X_KDB_ENTER:
+		return X_kdb_enter_init(data, count);
+	    case K_X_KDB_EXIT:
+		return X_kdb_exit_init(data, count);
+	    default:
+		return (D_INVALID_OPERATION);
+	}
+	return (D_SUCCESS);
+}
+
+#else	MACH_KERNEL
+/*
+ * kbdioctl - handling for asynch & non-blocking I/O.
+ */
+
+/*ARGSUSED*/
+kbdioctl(dev, cmd, data, flag)
+	dev_t dev;
+	int cmd;
+	caddr_t data;
+	int flag;
+{
+	spl_t s = SPLKD();
+	int err = 0;
+
+	switch (cmd) {
+	case KDSKBDMODE:
+		kb_mode = *(int *)data;
+		/* XXX - what to do about unread events? */
+		/* XXX - should check that "data" contains an OK value */
+		break;
+	case KDGKBDTYPE:
+		*(int *)data = KB_VANILLAKB;
+		break;
+	case K_X_KDB_ENTER:
+		X_kdb_enter_init((struct X_kdb *) data);
+		break;
+	case K_X_KDB_EXIT:
+		X_kdb_exit_init( (struct X_kdb *) data);
+		break;
+	case FIONBIO:
+		if (*(int *)data)
+			kbdflag |= KBD_NBIO;
+		else
+			kbdflag &= ~KBD_NBIO;
+		break;
+	case FIOASYNC:
+		if (*(int *)data)
+			kbdflag |= KBD_ASYNC;
+		else
+			kbdflag &= ~KBD_ASYNC;
+		break;
+	default:
+		err = ENOTTY;
+		break;
+	}
+
+	splx(s);
+	return(err);
+}
+
+
+/*
+ * kbdselect
+ */
+
+/*ARGSUSED*/
+kbdselect(dev, rw)
+{
+	spl_t s = SPLKD();
+
+	if (!kdq_empty(&kbd_queue)) {
+		splx(s);
+		return(1);
+	}
+
+	if (kbd_sel)
+		kbdflag |= KBD_COLL;
+	else
+		kbd_sel = (struct proc *)current_thread();
+					/* eeeyuck */
+	
+	splx(s);
+	return(0);
+}
+#endif	MACH_KERNEL
+
+
+/*
+ * kbdread - dequeue and return any queued events.
+ */
+
+#ifdef	MACH_KERNEL
+boolean_t	kbd_read_done();	/* forward */
+
+kbdread(dev, ior)
+	dev_t	dev;
+	register io_req_t	ior;
+{
+	register int	err, count;
+	register spl_t	s;
+
+	err = device_read_alloc(ior, (vm_size_t)ior->io_count);
+	if (err != KERN_SUCCESS)
+	    return (err);
+
+	s = SPLKD();
+	if (kdq_empty(&kbd_queue)) {
+	    if (ior->io_mode & D_NOWAIT) {
+		splx(s);
+		return (D_WOULD_BLOCK);
+	    }
+	    ior->io_done = kbd_read_done;
+	    enqueue_tail(&kbd_read_queue, (queue_entry_t) ior);
+	    splx(s);
+	    return (D_IO_QUEUED);
+	}
+	count = 0;
+	while (!kdq_empty(&kbd_queue) && count < ior->io_count) {
+	    register kd_event *ev;
+
+	    ev = kdq_get(&kbd_queue);
+	    *(kd_event *)(&ior->io_data[count]) = *ev;
+	    count += sizeof(kd_event);
+	}
+	splx(s);
+	ior->io_residual = ior->io_count - count;
+	return (D_SUCCESS);
+}
+
+boolean_t kbd_read_done(ior)
+	register io_req_t	ior;
+{
+	register int	count;
+	register spl_t	s;
+
+	s = SPLKD();
+	if (kdq_empty(&kbd_queue)) {
+	    ior->io_done = kbd_read_done;
+	    enqueue_tail(&kbd_read_queue, (queue_entry_t)ior);
+	    splx(s);
+	    return (FALSE);
+	}
+
+	count = 0;
+	while (!kdq_empty(&kbd_queue) && count < ior->io_count) {
+	    register kd_event *ev;
+
+	    ev = kdq_get(&kbd_queue);
+	    *(kd_event *)(&ior->io_data[count]) = *ev;
+	    count += sizeof(kd_event);
+	}
+	splx(s);
+
+	ior->io_residual = ior->io_count - count;
+	ds_read_done(ior);
+
+	return (TRUE);
+}
+
+#else	MACH_KERNEL
+/*ARGSUSED*/
+kbdread(dev, uio)
+	dev_t dev;
+	struct uio *uio;
+{
+	int s = SPLKD();
+	int err = 0;
+	kd_event *ev;
+	int i;
+	char *cp;
+
+	if (kdq_empty(&kbd_queue))
+		if (kbdflag & KBD_NBIO) {
+			err = EWOULDBLOCK;
+			goto done;
+		} else 
+			while (kdq_empty(&kbd_queue)) {
+				splx(s);
+				sleep((caddr_t)&kbd_queue, TTIPRI);
+				s = SPLKD();
+			}
+
+	while (!kdq_empty(&kbd_queue) && uio->uio_resid >= sizeof(kd_event)) {
+		ev = kdq_get(&kbd_queue);
+		for (cp = (char *)ev, i = 0; i < sizeof(kd_event);
+		     ++i, ++cp) {
+			err = ureadc(*cp, uio);
+			if (err)
+				goto done;
+		}
+	}
+
+done:
+	splx(s);
+	return(err);
+}
+#endif	MACH_KERNEL
+
+
+/*
+ * kd_enqsc - enqueue a scancode.  Should be called at SPLKD.
+ */
+
+void
+kd_enqsc(sc)
+	Scancode sc;
+{
+	kd_event ev;
+
+	ev.type = KEYBD_EVENT;
+	ev.time = time;
+	ev.value.sc = sc;
+	kbd_enqueue(&ev);
+}
+
+
+/*
+ * kbd_enqueue - enqueue an event and wake up selecting processes, if
+ * any.  Should be called at SPLKD.
+ */
+
+void
+kbd_enqueue(ev)
+	kd_event *ev;
+{
+	if (kdq_full(&kbd_queue))
+		printf("kbd: queue full\n");
+	else
+		kdq_put(&kbd_queue, ev);
+
+#ifdef	MACH_KERNEL
+	{
+	    register io_req_t	ior;
+	    while ((ior = (io_req_t)dequeue_head(&kbd_read_queue)) != 0)
+		iodone(ior);
+	}
+#else	MACH_KERNEL
+	if (kbd_sel) {
+		selwakeup(kbd_sel, kbdflag & KBD_COLL);
+		kbd_sel = 0;
+		kbdflag &= ~KBD_COLL;
+	}
+	if (kbdflag & KBD_ASYNC)
+		gsignal(kbdpgrp, SIGIO);
+	wakeup((caddr_t)&kbd_queue);
+#endif	MACH_KERNEL
+}
+
+u_int X_kdb_enter_str[512], X_kdb_exit_str[512];
+int   X_kdb_enter_len = 0,  X_kdb_exit_len = 0;
+
+kdb_in_out(p)
+u_int *p;
+{
+register int t = p[0];
+
+	switch (t & K_X_TYPE) {
+		case K_X_IN|K_X_BYTE:
+			inb(t & K_X_PORT);
+			break;
+
+		case K_X_IN|K_X_WORD:
+			inw(t & K_X_PORT);
+			break;
+
+		case K_X_IN|K_X_LONG:
+			inl(t & K_X_PORT);
+			break;
+
+		case K_X_OUT|K_X_BYTE:
+			outb(t & K_X_PORT, p[1]);
+			break;
+
+		case K_X_OUT|K_X_WORD:
+			outw(t & K_X_PORT, p[1]);
+			break;
+
+		case K_X_OUT|K_X_LONG:
+			outl(t & K_X_PORT, p[1]);
+			break;
+	}
+}
+
+X_kdb_enter()
+{
+register u_int *u_ip, *endp;
+
+	for (u_ip = X_kdb_enter_str, endp = &X_kdb_enter_str[X_kdb_enter_len];
+	     u_ip < endp;
+	     u_ip += 2)
+	    kdb_in_out(u_ip);
+}
+
+X_kdb_exit()
+{
+register u_int *u_ip, *endp;
+
+	for (u_ip = X_kdb_exit_str, endp = &X_kdb_exit_str[X_kdb_exit_len];
+	     u_ip < endp;
+	     u_ip += 2)
+	   kdb_in_out(u_ip);
+}
+
+#ifdef	MACH_KERNEL
+io_return_t
+X_kdb_enter_init(data, count)
+    u_int *data;
+    u_int count;
+{
+    if (count * sizeof X_kdb_enter_str[0] > sizeof X_kdb_enter_str)
+	return D_INVALID_OPERATION;
+
+    bcopy(data, X_kdb_enter_str, count * sizeof X_kdb_enter_str[0]);
+    X_kdb_enter_len = count;
+    return D_SUCCESS;
+}
+
+io_return_t
+X_kdb_exit_init(data, count)
+    u_int *data;
+    u_int count;
+{
+    if (count * sizeof X_kdb_exit_str[0] > sizeof X_kdb_exit_str)
+	return D_INVALID_OPERATION;
+
+    bcopy(data, X_kdb_exit_str, count * sizeof X_kdb_exit_str[0]);
+    X_kdb_exit_len = count;
+    return D_SUCCESS;
+}
+#else	MACH_KERNEL
+X_kdb_enter_init(kp)
+struct X_kdb *kp;
+{
+	if (kp->size > sizeof X_kdb_enter_str)
+		u.u_error = ENOENT;
+	else if(copyin(kp->ptr, X_kdb_enter_str, kp->size) == EFAULT)
+		u.u_error = EFAULT;
+
+	X_kdb_enter_len = kp->size>>2;
+}
+
+X_kdb_exit_init(kp)
+struct X_kdb *kp;
+{
+	if (kp->size > sizeof X_kdb_exit_str)
+		u.u_error = ENOENT;
+	else if(copyin(kp->ptr, X_kdb_exit_str, kp->size) == EFAULT)
+		u.u_error = EFAULT;
+
+	X_kdb_exit_len = kp->size>>2;
+}
+#endif	MACH_KERNEL