sys/arch/hp300/dev/frodoreg.h

   1 /*      $NetBSD: frodoreg.h,v 1.3 2005/12/11 12:17:13 christos 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, but no battery... lame */
  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))