123 lines
4.6 KiB
C
123 lines
4.6 KiB
C
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/* $NetBSD: frodoreg.h,v 1.1 1997/05/12 08:03:49 thorpej Exp $ */
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/*
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* Copyright (c) 1997 Michael Smith. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* Base address of the Frodo part */
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#define FRODO_BASE (INTIOBASE + 0x1c000)
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/*
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* Where we find the 8250-like APCI ports, and how far apart they are.
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*/
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#define FRODO_APCIBASE 0x0
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#define FRODO_APCISPACE 0x20
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#define FRODO_APCI_OFFSET(x) (FRODO_APCIBASE + ((x) * FRODO_APCISPACE))
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/*
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* Other items in the Frodo part
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*/
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/* An mc146818-like calendar, but no battery... lame */
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#define FRODO_CALENDAR 0x80
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#define FRODO_TIMER 0xa0 /* 8254-like timer */
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#define FRODO_T1_CTR 0xa0 /* counter 1 */
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#define FRODO_T2_CTR 0xa4 /* counter 2 */
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#define FRODO_T3_CTR 0xa8 /* counter 3 */
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#define FRODO_T_CTRL 0xac /* control register */
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#define FRODO_T_PSCALE 0xb0 /* prescaler */
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#define FRODO_T_PCOUNT 0xb4 /* precounter ? */
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#define FRODO_T_OVCOUNT 0xb8 /* overflow counter (0, 1, 2) */
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#define FRODO_PIO 0xc0 /* programmable i/o registers start
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here */
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#define FRODO_IISR 0xc0 /* ISA Interrupt Status Register
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(also PIR) */
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#define FRODO_IISR_SERVICE (1<<0) /* service switch "on" if 0 */
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#define FRODO_IISR_ILOW (1<<1) /* IRQ 3,4,5 or 6 on ISA if 1 */
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#define FRODO_IISR_IMID (1<<2) /* IRQ 7,9,10 or 11 on ISA if 1 */
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#define FRODO_IISR_IHI (1<<3) /* IRQ 12,13,14 or 15 on ISA if 1 */
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/* bits 4 and 5 are DN2500 SCSI interrupts */
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/* bit 6 is unused */
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#define FRODO_IISR_IOCHK (1<<7) /* ISA board asserted IOCHK if low */
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#define FRODO_PIO_IPR 0xc4 /* input polarity register
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(ints 7->0) */
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#define FRODO_PIO_IELR 0xc8 /* input edge/level register */
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/* This is probably not used on the 4xx */
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#define FRODO_DIAGCTL 0xd0 /* Diagnostic Control Register */
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#define FRODO_PIC_MU 0xe0 /* upper Interrupt Mask register */
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#define FRODO_PIC_ML 0xe4 /* lower Interrupt Mask register */
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#define FRODO_PIC_PU 0xe8 /* upper Interrupt Pending register */
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#define FRODO_PIC_PL 0xec /* lower Interrupt Pending register */
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#define FRODO_PIC_IVR 0xf8 /* Interrupt Vector register */
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#define FRODO_PIC_ACK 0xf8 /* Interrupt Acknowledge */
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/* Shorthand for register access. */
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#define FRODO_READ(sc, reg) ((sc)->sc_regs[(reg)])
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#define FRODO_WRITE(sc, reg, val) (sc)->sc_regs[(reg)] = (val)
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/* manipulate interrupt registers */
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#define FRODO_GETMASK(sc) \
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((FRODO_READ((sc), FRODO_PIC_MU) << 8) | \
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FRODO_READ((sc), FRODO_PIC_ML))
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#define FRODO_SETMASK(sc, val) do { \
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FRODO_WRITE((sc), FRODO_PIC_MU, ((val) >> 8) & 0xff); \
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FRODO_WRITE((sc), FRODO_PIC_ML, (val) & 0xff); } while (0)
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#define FRODO_GETPEND(sc) \
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((FRODO_READ((sc), FRODO_PIC_PU) << 8) | \
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FRODO_READ((sc), FRODO_PIC_PL))
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#define FRODO_IPEND(sc) \
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(FRODO_READ((sc), FRODO_PIC_ACK) & 0x0f)
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/*
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* Interrupt lines. Use FRODO_INTR_BIT() below to get a bit
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* suitable for one of the interrupt mask registers. Yes, line
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* 0 is unused.
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*/
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#define FRODO_INTR_ILOW 1
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#define FRODO_INTR_IMID 2
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#define FRODO_INTR_IHI 3
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#define FRODO_INTR_SCSIDMA 4 /* DN2500 only */
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#define FRODO_INTR_SCSI 5 /* DN2500 only */
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#define FRODO_INTR_HORIZ 6
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#define FRODO_INTR_IOCHK 7
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#define FRODO_INTR_CALENDAR 8
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#define FRODO_INTR_TIMER0 9
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#define FRODO_INTR_TIMER1 10
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#define FRODO_INTR_TIMER2 11
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#define FRODO_INTR_APCI0 12
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#define FRODO_INTR_APCI1 13
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#define FRODO_INTR_APCI2 14
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#define FRODO_INTR_APCI3 15
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#define FRODO_NINTR 16
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#define FRODO_INTR_BIT(line) (1 << (line))
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