initial import of NetBSD tree

1 files changed, 134 insertions, 0 deletions

diff --git a/sys/arch/pc532/include/icu.h b/sys/arch/pc532/include/icu.h
new file mode 100644
index 00000000000..e669036e5d1
--- /dev/null
+++ b/sys/arch/pc532/include/icu.h
@@ -0,0 +1,134 @@
+/*	$NetBSD: icu.h,v 1.5 1995/08/25 07:52:18 phil Exp $	*/
+
+/* 
+ * Copyright (c) 1993 Philip A. Nelson.
+ * 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 Philip A. Nelson.
+ * 4. The name of Philip A. Nelson may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY PHILIP NELSON ``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 PHILIP NELSON 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.
+ *
+ *	icu.h
+ */
+
+/* icu.h: defines for use with the ns32532 icu. */
+
+#ifndef _MACHINE_ICU_H_
+#define _MACHINE_ICU_H_
+
+/* We don't use vector interrupts, but make it right anyway */
+#define VEC_ICU		0x10
+
+/* The address of the ICU! */
+#define ICU_ADR		0xfffffe00
+
+/* ICU clock speed. */
+#define ICU_CLK_HZ	3686400/4	/* raw ICU clock speed */
+
+/* ICU registers
+ */
+#define HVCT	0
+#define SVCT	1
+#define ELTG	2
+#define TPL	4
+#define IPND	6
+#define ISRV	8
+#define IMSK	10
+#define CSRC	12
+#define FPRT	14
+#define MCTL	16
+#define OCASN	17
+#define CIPTR	18
+#define PDAT	19
+#define IPS	20
+#define PDIR	21
+#define CCTL	22
+#define CICTL	23
+#define LCSV	24
+#define HCSV	26
+#define LCCV	28
+#define HCCV	30
+
+/* Byte and Word access to ICU registers
+ */
+#define ICUB(n)	*((unsigned char  *)(ICU_ADR + n))
+#define ICUW(n)	*((unsigned short *)(ICU_ADR + n))
+
+#ifndef LOCORE
+/* Interrupt trigger modes
+ */
+enum {HIGH_LEVEL, LOW_LEVEL, RISING_EDGE, FALLING_EDGE} int_modes;
+#endif /* !LOCORE */
+
+/* Hardware interrupt request lines.
+ */
+#define IR_CLK		2		/* highest priority */
+#define IR_SCSI0	5		/* Adaptec 6250 */
+#define IR_SCSI1	4		/* NCR DP8490 */
+#define IR_TTY0		13
+#define IR_TTY0RDY	12
+#define IR_TTY1		11
+#define IR_TTY1RDY	10
+#define IR_TTY2		9
+#define IR_TTY2RDY	8
+#define IR_TTY3		7
+#define IR_TTY3RDY	6
+
+/*    edge polarity
+ *	0	0	falling edge
+ *	0	1	rising edge
+ *	1	0	low level
+ *	1	1	high level
+ *
+ */
+#define IEDGE		0
+#define IPOLARITY	0
+
+#define ints_off	bicpsrw	PSR_I
+#define ints_on		bispsrw	PSR_I
+
+/* SCSI controllers */
+#define AIC6250		0
+#define DP8490		1
+#define ICU_SCSI_BIT	0x80
+
+#ifndef LOCORE
+/*
+ * Select a SCSI controller.
+ */
+static __inline int
+scsi_select_ctlr(int ctlr)
+{
+	int old;
+
+	old = (ICUB(PDAT) & ICU_SCSI_BIT) == 0;
+	if (ctlr == DP8490)
+		ICUB(PDAT) &= ~ICU_SCSI_BIT;	/* select = 0 for 8490 */
+	else
+		ICUB(PDAT) |= ICU_SCSI_BIT;	/* select = 1 for AIC6250 */
+	return(old);
+}
+#endif /* !LOCORE */
+#endif /* _MACHINE_ICU_H_ */