1 /* $NetBSD: frodoreg.h,v 1.6 2023/01/15 06:19:45 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Michael Smith. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 /* 29 * Where we find the 8250-like APCI ports, and how far apart they are. 30 */ 31 #define FRODO_APCIBASE 0x0 32 #define FRODO_APCISPACE 0x20 33 #define FRODO_APCI_OFFSET(x) (FRODO_APCIBASE + ((x) * FRODO_APCISPACE)) 34 35 /* 36 * Other items in the Frodo part 37 */ 38 39 /* An mc146818-like calendar. Only 425e has a battery and an oscillator. */ 40 #define FRODO_CALENDAR 0x80 41 42 #define FRODO_TIMER 0xa0 /* 8254-like timer */ 43 #define FRODO_T1_CTR 0xa0 /* counter 1 */ 44 #define FRODO_T2_CTR 0xa4 /* counter 2 */ 45 #define FRODO_T3_CTR 0xa8 /* counter 3 */ 46 #define FRODO_T_CTRL 0xac /* control register */ 47 #define FRODO_T_PSCALE 0xb0 /* prescaler */ 48 #define FRODO_T_PCOUNT 0xb4 /* precounter ? */ 49 #define FRODO_T_OVCOUNT 0xb8 /* overflow counter (0, 1, 2) */ 50 51 #define FRODO_PIO 0xc0 /* programmable i/o registers start 52 here */ 53 #define FRODO_IISR 0xc0 /* ISA Interrupt Status Register 54 (also PIR) */ 55 #define FRODO_IISR_SERVICE (1<<0) /* service switch "on" if 0 */ 56 #define FRODO_IISR_ILOW (1<<1) /* IRQ 3,4,5 or 6 on ISA if 1 */ 57 #define FRODO_IISR_IMID (1<<2) /* IRQ 7,9,10 or 11 on ISA if 1 */ 58 #define FRODO_IISR_IHI (1<<3) /* IRQ 12,13,14 or 15 on ISA if 1 */ 59 /* bits 4 and 5 are DN2500 SCSI interrupts */ 60 /* bit 6 is unused */ 61 #define FRODO_IISR_IOCHK (1<<7) /* ISA board asserted IOCHK if low */ 62 63 #define FRODO_PIO_IPR 0xc4 /* input polarity register 64 (ints 7->0) */ 65 66 #define FRODO_PIO_IELR 0xc8 /* input edge/level register */ 67 68 /* This is probably not used on the 4xx */ 69 #define FRODO_DIAGCTL 0xd0 /* Diagnostic Control Register */ 70 71 #define FRODO_PIC_MU 0xe0 /* upper Interrupt Mask register */ 72 #define FRODO_PIC_ML 0xe4 /* lower Interrupt Mask register */ 73 #define FRODO_PIC_PU 0xe8 /* upper Interrupt Pending register */ 74 #define FRODO_PIC_PL 0xec /* lower Interrupt Pending register */ 75 #define FRODO_PIC_IVR 0xf8 /* Interrupt Vector register */ 76 #define FRODO_PIC_ACK 0xf8 /* Interrupt Acknowledge */ 77 78 /* Shorthand for register access. */ 79 #define FRODO_READ(sc, reg) ((sc)->sc_regs[(reg)]) 80 #define FRODO_WRITE(sc, reg, val) (sc)->sc_regs[(reg)] = (val) 81 82 /* manipulate interrupt registers */ 83 #define FRODO_GETMASK(sc) \ 84 ((FRODO_READ((sc), FRODO_PIC_MU) << 8) | \ 85 FRODO_READ((sc), FRODO_PIC_ML)) 86 #define FRODO_SETMASK(sc, val) do { \ 87 FRODO_WRITE((sc), FRODO_PIC_MU, ((val) >> 8) & 0xff); \ 88 FRODO_WRITE((sc), FRODO_PIC_ML, (val) & 0xff); } while (0) 89 90 #define FRODO_GETPEND(sc) \ 91 ((FRODO_READ((sc), FRODO_PIC_PU) << 8) | \ 92 FRODO_READ((sc), FRODO_PIC_PL)) 93 #define FRODO_IPEND(sc) \ 94 (FRODO_READ((sc), FRODO_PIC_ACK) & 0x0f) 95 96 /* 97 * Interrupt lines. Use FRODO_INTR_BIT() below to get a bit 98 * suitable for one of the interrupt mask registers. Yes, line 99 * 0 is unused. 100 */ 101 #define FRODO_INTR_ILOW 1 102 #define FRODO_INTR_IMID 2 103 #define FRODO_INTR_IHI 3 104 #define FRODO_INTR_SCSIDMA 4 /* DN2500 only */ 105 #define FRODO_INTR_SCSI 5 /* DN2500 only */ 106 #define FRODO_INTR_HORIZ 6 107 #define FRODO_INTR_IOCHK 7 108 #define FRODO_INTR_CALENDAR 8 109 #define FRODO_INTR_TIMER0 9 110 #define FRODO_INTR_TIMER1 10 111 #define FRODO_INTR_TIMER2 11 112 #define FRODO_INTR_APCI0 12 113 #define FRODO_INTR_APCI1 13 114 #define FRODO_INTR_APCI2 14 115 #define FRODO_INTR_APCI3 15 116 117 #define FRODO_NINTR 16 118 119 #define FRODO_INTR_BIT(line) (1 << (line)) 120