New directory and drivers for Parallel Port Bus devices.

Submitted by:	Nicolas Souchu <Nicolas.Souchu@prism.uvsq.fr>

1 files changed, 172 insertions, 0 deletions

diff --git a/sys/dev/ppbus/ppi.c b/sys/dev/ppbus/ppi.c
new file mode 100644
index 0000000..79df5b5
--- /dev/null
+++ b/sys/dev/ppbus/ppi.c
@@ -0,0 +1,172 @@
+/*-
+ * Copyright (c) 1997 Nicolas Souchu
+ * 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.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+ *
+ *	$Id$
+ *
+ */
+#include <sys/types.h>
+
+#ifdef KERNEL
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/proc.h>
+#include <sys/buf.h>
+#include <sys/kernel.h>
+#include <sys/uio.h>
+#include <sys/syslog.h>
+#include <sys/malloc.h>
+
+#include <machine/stdarg.h>
+#include <machine/clock.h>
+
+#include <i386/isa/isa.h>
+#include <i386/isa/isa_device.h>
+
+#include <sys/kernel.h>
+#endif /*KERNEL */
+
+#include <dev/ppbus/ppbconf.h>
+#include <dev/ppbus/ppi.h>
+
+static int	nppi = 0;
+#define MAXPPI	8			/* XXX not much better! */
+static struct ppi_data *ppidata[MAXPPI];
+
+/*
+ * Make ourselves visible as a ppbus driver
+ */
+
+static struct ppb_device	*ppiprobe(struct ppb_data *ppb);
+static int			ppiattach(struct ppb_device *dev);
+static void			ppiintr(int unit);
+
+#ifdef KERNEL
+
+static struct ppb_driver ppidriver = {
+    ppiprobe, ppiattach, "ppi"
+};
+DATA_SET(ppbdriver_set, ppidriver);
+
+#endif /* KERNEL */
+
+static	d_open_t	ppiopen;
+static	d_close_t	ppiclose;
+static	d_ioctl_t	ppiioctl;
+
+#define CDEV_MAJOR 14			/* XXX */
+static struct cdevsw ppi_cdevsw = 
+	{ ppiopen,	ppiclose,	noread,		nowrite,
+	  ppiioctl,	nullstop,	nullreset,	nodevtotty,
+	  seltrue,	nommap,		nostrat,	"ppi",	NULL,	-1 };
+
+/*
+ * ppiprobe()
+ */
+static struct ppb_device *
+ppiprobe(struct ppb_data *ppb)
+{
+	struct ppi_data *ppi;
+
+	ppi = (struct ppi_data *) malloc(sizeof(struct ppi_data),
+							M_TEMP, M_NOWAIT);
+	if (!ppi) {
+		printf("ppi: cannot malloc!\n");
+		return 0;
+	}
+	bzero(ppi, sizeof(struct ppi_data));
+
+	ppidata[nppi] = ppi;
+
+	/*
+	 * ppi dependent initialisation.
+	 */
+	ppi->ppi_unit = nppi;
+
+	/*
+	 * ppbus dependent initialisation.
+	 */
+	ppi->ppi_dev.id_unit = ppi->ppi_unit;
+	ppi->ppi_dev.ppb = ppb;
+	ppi->ppi_dev.intr = ppiintr;
+
+	/* Ok, go to next device on next probe */
+	nppi ++;
+
+	return &ppi->ppi_dev;
+}
+
+static int
+ppiattach(struct ppb_device *dev)
+{
+	struct ppi_data *ppi = ppidata[dev->id_unit];
+
+	/*
+	 * Report ourselves
+	 */
+	printf("ppi%d: <generic parallel i/o> on ppbus %d\n",
+	       dev->id_unit, dev->ppb->ppb_link->adapter_unit);
+
+	return (1);
+}
+
+static void
+ppiintr(int unit)
+{
+	return;
+}
+
+static int
+ppiopen(dev_t dev, int flags, int fmt, struct proc *p)
+{
+	return (EOPNOTSUPP);
+}
+
+static int
+ppiclose(dev_t dev, int flags, int fmt, struct proc *p)
+{
+	return (EOPNOTSUPP);
+}
+
+static int
+ppiioctl(dev_t dev, int cmd, caddr_t data, int flags, struct proc *p)
+{
+	return (EOPNOTSUPP);
+}
+
+static ppi_devsw_installed = 0;
+
+static void 	ppi_drvinit(void *unused)
+{
+	dev_t dev;
+
+	if( ! ppi_devsw_installed ) {
+		dev = makedev(CDEV_MAJOR, 0);
+		cdevsw_add(&dev, &ppi_cdevsw, NULL);
+		ppi_devsw_installed = 1;
+    	}
+}
+
+SYSINIT(ppidev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR, ppi_drvinit, NULL)