initial import of NetBSD tree

1 files changed, 139 insertions, 0 deletions

diff --git a/sys/dev/isa/isavar.h b/sys/dev/isa/isavar.h
new file mode 100644
index 00000000000..96fc2455992
--- /dev/null
+++ b/sys/dev/isa/isavar.h
@@ -0,0 +1,139 @@
+/*	$NetBSD: isavar.h,v 1.16 1995/06/07 06:45:44 cgd Exp $	*/
+
+/*
+ * Copyright (c) 1995 Chris G. Demetriou
+ * Copyright (c) 1992 Berkeley Software Design, Inc.
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Berkeley Software
+ *	Design, Inc.
+ * 4. The name of Berkeley Software Design must not be used to endorse
+ *    or promote products derived from this software without specific
+ *    prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``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 BERKELEY SOFTWARE DESIGN, INC. 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.
+ *
+ *	BSDI Id: isavar.h,v 1.5 1992/12/01 18:06:00 karels Exp 
+ */
+
+/*
+ * Definitions for ISA autoconfiguration.
+ */
+
+#include <sys/queue.h>
+
+/*
+ * ISA driver attach arguments
+ */
+struct isa_attach_args {
+	int	ia_iobase;		/* base i/o address */
+	int	ia_iosize;		/* span of ports used */
+	int	ia_irq;			/* interrupt request */
+	int	ia_drq;			/* DMA request */
+	int	ia_maddr;		/* physical i/o mem addr */
+	u_int	ia_msize;		/* size of i/o memory */
+	void	*ia_aux;		/* driver specific */
+};
+
+#define	IOBASEUNK	-1		/* i/o address is unknown */
+#define	IRQUNK		-1		/* interrupt request line is unknown */
+#define	DRQUNK		-1		/* DMA request line is unknown */
+#define	MADDRUNK	-1		/* shared memory address is unknown */
+
+/*
+ * Per-device ISA variables
+ */
+struct isadev {
+	struct  device *id_dev;		/* back pointer to generic */
+	TAILQ_ENTRY(isadev)
+		id_bchain;		/* bus chain */
+};
+
+/*
+ * ISA master bus
+ */
+struct isa_softc {
+	struct	device sc_dev;		/* base device */
+	TAILQ_HEAD(, isadev)
+		sc_subdevs;		/* list of all children */
+};
+
+#define		cf_iobase		cf_loc[0]
+#define		cf_iosize		cf_loc[1]
+#define		cf_maddr		cf_loc[2]
+#define		cf_msize		cf_loc[3]
+#define		cf_irq			cf_loc[4]
+#define		cf_drq			cf_loc[5]
+
+/*
+ * ISA interrupt handler manipulation.
+ * 
+ * To establish an ISA interrupt handler, a driver calls isa_intr_establish()
+ * with the interrupt number, type, level, function, and function argument of
+ * the interrupt it wants to handle.  Isa_intr_establish() returns an opaque
+ * handle to an event descriptor if it succeeds, and invokes panic() if it
+ * fails.  (XXX It should return NULL, then drivers should handle that, but
+ * what should they do?)  Interrupt handlers should return 0 for "interrupt
+ * not for me", 1  for "I took care of it", or -1 for "I guess it was mine,
+ * but I wasn't expecting it."
+ *
+ * To remove an interrupt handler, the driver calls isa_intr_disestablish() 
+ * with the handle returned by isa_intr_establish() for that handler.
+ */
+
+/* ISA interrupt sharing types */
+typedef enum {
+	ISA_IST_NONE = 0,	/* not yet assigned */
+	ISA_IST_PULSE,		/* pulsed */
+	ISA_IST_EDGE,		/* edge-triggered */
+	ISA_IST_LEVEL		/* level-triggered */
+} isa_intrtype;
+
+/* ISA interrupt levels; system interrupt levels for ISA bus use */
+typedef enum {
+	ISA_IPL_NONE,		/* block only the interrupt's IRQ*/
+	ISA_IPL_BIO,		/* block I/O interrupts */
+	ISA_IPL_NET,		/* network */
+	ISA_IPL_TTY,		/* terminal */
+	ISA_IPL_CLOCK,		/* clock */
+} isa_intrlevel;
+
+void	isascan __P((struct device *parent, void *match));
+void	*isa_intr_establish __P((int intr, isa_intrtype type,
+	    isa_intrlevel level, int (*ih_fun)(void *), void *ih_arg));
+void	isa_intr_disestablish __P((void *handler));
+char	*isa_intr_typename __P((isa_intrtype type));
+
+#ifdef NEWCONFIG
+/*
+ * Establish a device as being on the ISA bus (XXX NOT IMPLEMENTED).
+ */
+void isa_establish __P((struct isadev *, struct device *));
+#endif
+
+/*
+ * software conventions
+ */
+typedef enum { BUS_ISA, BUS_EISA } isa_type;
+
+extern isa_type isa_bustype;	/* type of bus; XXX should be in softc */