z8530 reorganization from gwr (which i think isn't nearly as machine

independent or correct as he thinks it is)

1 files changed, 111 insertions, 0 deletions

diff --git a/sys/dev/ic/z8530sc.h b/sys/dev/ic/z8530sc.h
new file mode 100644
index 00000000000..57ec9c4dc91
--- /dev/null
+++ b/sys/dev/ic/z8530sc.h
@@ -0,0 +1,111 @@
+/*	$NetBSD: z8530sc.h,v 1.1 1996/01/24 01:07:24 gwr Exp $	*/
+
+/*
+ * Copyright (c) 1994 Gordon W. Ross
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Lawrence Berkeley Laboratory.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ *	@(#)zsvar.h	8.1 (Berkeley) 6/11/93
+ */
+
+
+/*
+ * Function vector - per channel
+ */
+struct zsops {
+	int	(*zsop_rxint)();	/* receive char available */
+	int	(*zsop_stint)();	/* external/status */
+	int	(*zsop_txint)();	/* xmit buffer empty */
+	int	(*zsop_softint)();	/* process software interrupt */
+};
+
+extern struct zsops zsops_null;
+
+
+/*
+ * Software state, per zs channel.
+ */
+struct zs_chanstate {
+
+	/* Pointers to the device registers. */
+	volatile u_char	*cs_reg_csr; 	/* ctrl, status, and reg. number. */
+	volatile u_char	*cs_reg_data;	/* data or numbered register */
+
+	int	cs_channel;		/* sub-unit number */
+	void *cs_private;	/* sub-driver data pointer */
+	struct zsops *cs_ops;
+
+	int cs_pclk_div16;		/* PCLK / 16 */
+	int	cs_defspeed;		/* default baud rate (from PROM) */
+
+	/*
+	 * We must keep a copy of the write registers as they are
+	 * mostly write-only and we sometimes need to set and clear
+	 * individual bits (e.g., in WR3).  Not all of these are
+	 * needed but 16 bytes is cheap and this makes the addressing
+	 * simpler.  Unfortunately, we can only write to some registers
+	 * when the chip is not actually transmitting, so whenever
+	 * we are expecting a `transmit done' interrupt the preg array
+	 * is allowed to `get ahead' of the current values.  In a
+	 * few places we must change the current value of a register,
+	 * rather than (or in addition to) the pending value; for these
+	 * cs_creg[] contains the current value.
+	 */
+	u_char	cs_creg[16];		/* current values */
+	u_char	cs_preg[16];		/* pending values */
+
+	u_char	cs_heldchange;		/* change pending (creg != preg) */
+	u_char	cs_rr0;			/* last rr0 processed */
+
+	char	cs_softreq;		/* need soft interrupt call */
+	char	cs__spare;
+};
+
+struct zsc_softc {
+	struct	device zsc_dev;		/* required first: base device */
+	struct	zs_chanstate zsc_cs[2];	/* channel A and B soft state */
+};
+
+struct zsc_attach_args {
+	int channel;	/* two serial channels per zsc */
+	int hwflags;
+};
+#define ZS_HWFLAG_CONSOLE 1
+