init gnumach copy

1 files changed, 285 insertions, 0 deletions

diff --git a/i386/i386at/lpr.c b/i386/i386at/lpr.c
new file mode 100644
index 0000000..f8d42f3
--- /dev/null
+++ b/i386/i386at/lpr.c
@@ -0,0 +1,285 @@
+/* 
+ * Mach Operating System
+ * Copyright (c) 1993-1990 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.
+ */
+/* 
+ *	Parallel port printer driver v1.0
+ *	All rights reserved.
+ */ 
+  
+#if NLPR > 0
+  
+#include <mach/std_types.h>
+#include <sys/types.h>
+#include <kern/printf.h>
+#include <kern/mach_clock.h>
+#include <device/conf.h>
+#include <device/device_types.h>
+#include <device/tty.h>
+#include <device/io_req.h>
+  
+#include <i386/ipl.h>
+#include <i386/pio.h>
+#include <chips/busses.h>
+#include <i386at/autoconf.h>
+#include <i386at/lpr.h>
+  
+/* 
+ * Driver information for auto-configuration stuff.
+ */
+
+struct bus_device *lprinfo[NLPR];	/* ??? */
+
+static vm_offset_t lpr_std[NLPR] = { 0 };
+static struct bus_device *lpr_info[NLPR];
+struct bus_driver lprdriver = {
+	lprprobe, 0, lprattach, 0, lpr_std, "lpr", lpr_info, 0, 0, 0};
+
+struct tty	lpr_tty[NLPR];
+
+int lpr_alive[NLPR];
+
+int
+lprprobe(vm_offset_t port, struct bus_ctlr *dev)
+{
+	u_short	addr = (u_short) dev->address;
+	int	unit = dev->unit;
+	int ret;
+
+	if ((unit < 0) || (unit >= NLPR)) {
+		printf("com %d out of range\n", unit);
+		return(0);
+	}
+
+	outb(INTR_ENAB(addr),0x07);
+	outb(DATA(addr),0xaa);
+	ret = inb(DATA(addr)) == 0xaa;
+	if (ret) {
+		if (lpr_alive[unit]) {
+			printf("lpr: Multiple alive entries for unit %d.\n", unit);
+			printf("lpr: Ignoring entry with address = %x .\n", addr);
+			ret = 0;
+		} else
+			lpr_alive[unit]++;
+	}
+	return(ret);
+}
+
+void lprattach(struct bus_device *dev)
+{
+	u_char		unit = dev->unit;
+	u_short		addr = (u_short) dev->address;
+
+	if (unit >= NLPR) {
+		printf(", disabled by NLPR configuration\n");
+		return;
+	}
+
+	take_dev_irq(dev);
+	printf(", port = %zx, spl = %zd, pic = %d.",
+	       dev->address, dev->sysdep, dev->sysdep1);
+	lprinfo[unit] = dev;
+  
+	outb(INTR_ENAB(addr), inb(INTR_ENAB(addr)) & 0x0f);
+
+	return;
+}
+
+int
+lpropen(dev_t dev, int flag, io_req_t ior)
+{
+	int unit = minor(dev);
+	struct bus_device *isai;
+	struct tty *tp;
+	u_short addr;
+
+	if (unit >= NLPR)
+		return D_NO_SUCH_DEVICE;
+
+	isai = lprinfo[unit];
+	if (isai == NULL || !isai->alive)
+		return D_NO_SUCH_DEVICE;
+
+	tp = &lpr_tty[unit];
+	addr = (u_short) isai->address;
+	tp->t_dev = dev;
+	tp->t_addr = (void*) (natural_t) addr;
+	tp->t_oproc = lprstart;
+	tp->t_state |= TS_WOPEN;
+	tp->t_stop = lprstop;
+	tp->t_getstat = lprgetstat;
+	tp->t_setstat = lprsetstat;
+	if ((tp->t_state & TS_ISOPEN) == 0)
+		ttychars(tp);
+	outb(INTR_ENAB(addr), inb(INTR_ENAB(addr)) | 0x10);
+	tp->t_state |= TS_CARR_ON;
+	return (char_open(dev, tp, flag, ior));
+}
+
+void
+lprclose(dev_t dev, int flag)
+{
+int 		unit = minor(dev);
+struct	tty	*tp = &lpr_tty[unit];
+u_short		addr = 	(u_short) lprinfo[unit]->address;
+  
+	ttyclose(tp);
+	if (tp->t_state&TS_HUPCLS || (tp->t_state&TS_ISOPEN)==0) {
+		outb(INTR_ENAB(addr), inb(INTR_ENAB(addr)) & 0x0f);
+		tp->t_state &= ~TS_BUSY;
+	} 
+}
+
+int
+lprread(dev_t dev, io_req_t ior)
+{
+	return char_read(&lpr_tty[minor(dev)], ior);
+}
+
+int
+lprwrite(dev_t dev, io_req_t ior)
+{
+	return char_write(&lpr_tty[minor(dev)], ior);
+}
+
+int
+lprportdeath(dev_t dev, mach_port_t port)
+{
+	return (tty_portdeath(&lpr_tty[minor(dev)], (ipc_port_t)port));
+}
+
+io_return_t
+lprgetstat(
+  dev_t dev,
+  dev_flavor_t flavor,
+  dev_status_t data, /* pointer to OUT array */
+  mach_msg_type_number_t *count /* out */
+  )
+{
+	io_return_t	result = D_SUCCESS;
+	int		unit = minor(dev);
+
+	switch (flavor) {
+	default:
+		result = tty_get_status(&lpr_tty[unit], flavor, data, count);
+		break;
+	}
+	return (result);
+}
+
+io_return_t
+lprsetstat(
+	dev_t		dev,
+	dev_flavor_t	flavor,
+	dev_status_t	data,
+	mach_msg_type_number_t	count)
+{
+	io_return_t	result = D_SUCCESS;
+	int 		unit = minor(dev);
+
+	switch (flavor) {
+	default:
+		result = tty_set_status(&lpr_tty[unit], flavor, data, count);
+/*		if (result == D_SUCCESS && flavor == TTY_STATUS)
+			lprparam(unit);
+*/		return (result);
+	}
+	return (D_SUCCESS);
+}
+
+void lprintr(int unit)
+{
+	struct tty *tp = &lpr_tty[unit];
+
+	if ((tp->t_state & TS_ISOPEN) == 0)
+	  return;
+
+	tp->t_state &= ~TS_BUSY;
+	if (tp->t_state&TS_FLUSH)
+		tp->t_state &=~TS_FLUSH;
+	tt_write_wakeup(tp);
+	lprstart(tp);
+}   
+
+void lprstart(struct tty *tp)
+{
+	spl_t s = spltty();
+	u_short addr = (natural_t) tp->t_addr;
+	int status = inb(STATUS(addr));
+	int nch;
+
+	if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP|TS_BUSY)) {
+		splx(s);
+		return;
+	}
+
+	if (status & 0x20) {
+		printf("Printer out of paper!\n");
+		splx(s);
+		return;
+	}
+
+	if (tp->t_outq.c_cc <= TTLOWAT(tp)) {
+		tt_write_wakeup(tp);
+	}
+	if (tp->t_outq.c_cc == 0) {
+		splx(s);
+		return;
+	}
+	nch = getc(&tp->t_outq);
+	if (nch == -1) {
+		splx(s);
+		return;
+	}
+	if ((tp->t_flags & LITOUT) == 0 && (nch & 0200)) {
+		timeout((timer_func_t *)ttrstrt, (char *)tp, (nch & 0x7f) + 6);
+		tp->t_state |= TS_TIMEOUT;
+		return;
+	}
+	outb(DATA(addr), nch);
+	outb(INTR_ENAB(addr),inb(INTR_ENAB(addr)) | 0x01);
+	outb(INTR_ENAB(addr),inb(INTR_ENAB(addr)) & 0x1e);
+	tp->t_state |= TS_BUSY;
+	splx(s);
+	return;
+}
+
+void
+lprstop(
+	struct tty 	*tp,
+	int		flags)
+{
+	if ((tp->t_state & TS_BUSY) && (tp->t_state & TS_TTSTOP) == 0)
+		tp->t_state |= TS_FLUSH;
+}
+
+void
+lprpr_addr(unsigned short addr)
+{
+	printf("DATA(%x) %x, STATUS(%x) %x, INTR_ENAB(%x) %x\n",
+		DATA(addr), inb(DATA(addr)),
+		STATUS(addr), inb(STATUS(addr)),
+		INTR_ENAB(addr), inb(INTR_ENAB(addr)));
+}
+#endif /* NLPR */