zs driver, from different srcs, including netbsd/macppc and out mac68k/zs, etc.

1 files changed, 143 insertions, 0 deletions

diff --git a/sys/arch/macppc/include/z8530var.h b/sys/arch/macppc/include/z8530var.h
new file mode 100644
index 00000000000..9e383d6ec12
--- /dev/null
+++ b/sys/arch/macppc/include/z8530var.h
@@ -0,0 +1,143 @@
+/*	$OpenBSD: z8530var.h,v 1.1 2001/09/26 22:45:43 mickey Exp $	*/
+/*	$NetBSD: z8530var.h,v 1.1 1998/05/15 10:15:57 tsubai 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
+ */
+
+#include <dev/ic/z8530sc.h>
+#include <machine/bus.h>
+#include <macppc/dev/dbdma.h>
+
+/*
+ * Clock source info structure, added here so xzs_chanstate works
+ */
+struct zsclksrc {
+	long    clk;    /* clock rate, in MHz, present on signal line */
+	int     flags;  /* Specifies how this source can be used
+			   (RTxC divided, RTxC BRG, PCLK BRG, TRxC divided)
+			   and also if the source is "external" and if it
+			   is changeable (by an ioctl ex.). The
+			   source usage flags are used by the tty
+			   child. The other bits tell zsloadchannelregs
+			   if it should call an md signal source
+			   changing routine. ZSC_VARIABLE says if
+			   an ioctl should be able to cahnge the
+			   clock rate.*/
+};
+#define ZSC_PCLK        0x01
+#define ZSC_RTXBRG      0x02
+#define ZSC_RTXDIV      0x04
+#define ZSC_TRXDIV      0x08
+#define ZSC_VARIABLE    0x40
+#define ZSC_EXTERN      0x80
+
+#define ZSC_BRG         0x03
+#define ZSC_DIV         0x0c
+
+
+/*
+ * These are the machine-dependent (extended) variants of
+ * struct zs_chanstate and struct zsc_softc
+ */
+struct xzs_chanstate {
+	/* machine-independent part (First!)*/
+	struct zs_chanstate xzs_cs;
+	/* machine-dependent extensions */
+	int cs_hwflags;
+	int	cs_chip;		/* type of chip */
+	/* Clock source info... */
+	int	cs_clock_count;		/* how many signal sources available */
+	struct zsclksrc cs_clocks[4];	/* info on available signal sources */
+	long	cs_cclk_flag;		/* flag for current clock source */
+	long	cs_pclk_flag;		/* flag for pending clock source */
+	int	cs_csource;		/* current source # */
+	int	cs_psource;		/* pending source # */
+};
+
+struct zsc_softc {
+	struct	device zsc_dev;		/* required first: base device */
+	struct	zs_chanstate zsc_cs[2];	/* channel A and B soft state */
+	dbdma_regmap_t *zsc_txdmareg[2];
+	dbdma_command_t *zsc_txdmacmd[2];
+	/* XXX tx only, for now */
+};
+
+/*
+ * Functions to read and write individual registers in a channel.
+ * The ZS chip requires a 1.6 uSec. recovery time between accesses,
+ * and the Sun3 hardware does NOT take care of this for you.
+ * MacII hardware DOES dake care of the delay for us. :-)
+ * XXX - Then these should be inline functions! -gwr
+ * Some clock-chirped macs loose serial ports. It could be that the
+ * hardware delay is tied to the CPU speed, and that the minimum delay
+ * no longer's respected. For them, ZS_DELAY might help.
+ * XXX - no one seems to want to try and check this -wrs
+ */
+
+u_char zs_read_reg __P((struct zs_chanstate *cs, u_char reg));
+u_char zs_read_csr __P((struct zs_chanstate *cs));
+u_char zs_read_data __P((struct zs_chanstate *cs));
+
+void  zs_write_reg __P((struct zs_chanstate *cs, u_char reg, u_char val));
+void  zs_write_csr __P((struct zs_chanstate *cs, u_char val));
+void  zs_write_data __P((struct zs_chanstate *cs, u_char val));
+
+/* XXX - Could define splzs() here instead of in psl.h */
+#define splzs spltty
+
+/* Hook for MD ioctl support */
+int	zsmdioctl __P((struct zs_chanstate *cs, u_long cmd, caddr_t data));
+/* XXX - This is a bit gross... */
+#define ZS_MD_IOCTL zsmdioctl(cs, cmd, data)
+
+/* Callback for "external" clock sources */
+void zsmd_setclock  __P((struct zs_chanstate *cs));
+#define ZS_MD_SETCLK(cs) zsmd_setclock(cs)
+
+#define	zsc_req_softint(zsc)	(void)(zsc)
+
+void	zs_abort __P((void));
+
+#define	ZSTTY_MAJOR	7