Major ppbus updates from the author.

 - ppbus now supports PLIP via the if_plip driver
 - ieee1284 infrastructure added, including parallel-port PnP
 - port microsequencer added, for scripting the sort of port I/O
   that is common with parallel devices without endless calls up and down
   through the driver structure.
 - improved bus ownership behaviour among the ppbus-using drivers.
 - improved I/O chipset feature detection

The vpo driver is now implemented using the microsequencer, leading to
some performance improvements as well as providing an extensive example
of its use.

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

1 files changed, 84 insertions, 0 deletions

diff --git a/sys/dev/ppbus/vpoio.h b/sys/dev/ppbus/vpoio.h
new file mode 100644
index 0000000..40c5c01
--- /dev/null
+++ b/sys/dev/ppbus/vpoio.h
@@ -0,0 +1,84 @@
+/*-
+ * Copyright (c) 1998 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: vpoio.h,v 1.1.2.3 1998/06/14 15:37:21 son Exp $
+ *
+ */
+#ifndef __VP0IO_H
+#define __VP0IO_H
+
+/*
+ * The ZIP drive cannot act as an initiator.
+ */
+#define VP0_INITIATOR	0x7
+
+#define VP0_ESELECT_TIMEOUT	1
+#define VP0_ECMD_TIMEOUT	2
+#define VP0_ECONNECT		3
+#define VP0_ESTATUS_TIMEOUT	4
+#define VP0_EDATA_OVERFLOW	5	
+#define VP0_EDISCONNECT		6
+#define VP0_EPPDATA_TIMEOUT	7
+#define VP0_ENOPORT		9
+#define VP0_EINITFAILED		10
+#define VP0_EINTR		12
+
+#define VP0_EOTHER		13
+
+#define VP0_OPENNINGS	1
+
+/*
+ * Data structure used during microsequence execution
+ * when characters are received in nibble mode
+ */
+struct vpo_nibble {
+	char h;			/* most significant nibble */
+	char l;			/* less significant nibble */
+};
+
+struct vpoio_data {
+	unsigned short int vpo_unit;
+
+	struct vpo_nibble vpo_nibble;
+
+	/* each device must have its own nibble inbyte microsequence */
+	struct ppb_microseq *vpo_nibble_inbyte_msq;
+
+	struct ppb_device vpo_dev;
+};
+
+#define vpoio_set_unit(vpo,unit) ((vpo)->vpo_unit = unit)
+
+struct ppb_device *vpoio_probe(struct ppb_data *ppb, struct vpoio_data *vpo);
+
+int vpoio_attach(struct vpoio_data *vpo);
+int vpoio_detect(struct vpoio_data *vpo);
+int vpoio_reset_bus(struct vpoio_data *vpo);
+
+int vpoio_do_scsi(struct vpoio_data *vpo, int host, int target, char *command,
+		int clen, char *buffer, int blen, int *result, int *count,
+		int *ret);
+
+#endif