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sioreg.h revision 1.3 
      1 /* $NetBSD: sioreg.h,v 1.3 2021/06/25 13:32:39 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1996 BBN Corporation.
      5  *   BBN Systems and Technologies Division
      6  *   10 Moulton Street
      7  *   Cambridge, Ma. 02138
      8  *   617-873-3000
      9  *
     10  *  Permission to use, copy, modify, distribute, and sell this software and its
     11  *  documentation for  any purpose is hereby granted without fee, provided that
     12  *  the above copyright notice and this permission appear  in all copies and in
     13  *  supporting documentation, and that the name of BBN Corporation not  be used
     14  *  in  advertising  or  publicity pertaining  to  distribution of the software
     15  *  without specific, written  prior  permission.  BBN makes no representations
     16  *  about  the  suitability  of this software for any purposes.  It is provided
     17  *  "AS IS" without express or implied warranties.
     18  */
     19 
     20 /*
     21  * Intel 82378 System I/O (SIO) Chip
     22  *
     23  * Taken from the Intel "Peripheral Components" manual, 1995 Edition.
     24  */
     25 
     26 
     27 /*
     28  * Device-specific PCI Configuration Registers
     29  */
     30 
     31 /*
     32  * PCI Control Registers
     33  */
     34 #define	SIO_PCIREG_PCICON	0x40	/* PCI Control */
     35 #define	SIO_PCIREG_PAC		0x41	/* PCI Arbiter Control */
     36 #define	SIO_PCIREG_PAPC		0x42	/* PCI Arbiter Priority Control */
     37 #define	SIO_PCIREG_ARBPRIX	0x43	/* PCI Arbiter Priority Control Ext. */
     38 
     39 /*
     40  * Memory Chip Select Registers
     41  */
     42 #define	SIO_PCIREG_MEMCSCON	0x44	/* MEMCS# Control */
     43 #define	SIO_PCIREG_MEMCSBOH	0x45	/* MEMCS# Bottom of Hole */
     44 #define	SIO_PCIREG_MEMCSTOH	0x46	/* MEMCS# Top of Hole */
     45 #define	SIO_PCIREG_MEMCSTOM	0x47	/* MEMCS# Top of Memory */
     46 
     47 #define	SIO_PCIREG_MAR1		0x54	/* MEMCS# Attribute 1 */
     48 #define	SIO_PCIREG_MAR2		0x55	/* MEMCS# Attribute 2 */
     49 #define	SIO_PCIREG_MAR3		0x56	/* MEMCS# Attribute 3 */
     50 #define	SIO_PCIREG_DMASGRB	0x57	/* DMA Scatter/Gather Rel. Base Addr. */
     51 
     52 /*
     53  * ISA Address Decoder Registers
     54  */
     55 #define	SIO_PCIREG_IADCON	0x48	/* ISA Address Decoder Control */
     56 #define	SIO_PCIREG_IADRBE	0x49	/* ISA Addr. Decoder ROM Block Enable */
     57 #define	SIO_PCIREG_IADBOH	0x4A	/* ISA Addr. Decoder Bottom of Hole */
     58 #define	SIO_PCIREG_IADTOH	0x4B	/* ISA Addr. Decoder Top of Hole */
     59 
     60 /*
     61  * Clocks and Timers
     62  */
     63 #define	SIO_PCIREG_ICRT		0x4C	/* ISA Controller Recovery Timer */
     64 #define	SIO_PCIREG_ICD		0x4D	/* ISA Clock Divisor */
     65 
     66 #define	SIO_PCIREG_		0x80	/* BIOS Timer Base Address */
     67 
     68 #define	SIO_PCIREG_CTLTMRL	0xAC	/* Clock Throttle STPCLK# Low Timer */
     69 #define	SIO_PCIREG_CTLTMRH	0xAE	/* Clock Throttle STPCLK# High Timer */
     70 
     71 /*
     72  * Miscellaneous
     73  */
     74 #define	SIO_PCIREG_UBCSA	0x4E	/* Utility Bus Chip Select A */
     75 #define	SIO_PCIREG_UBCSB	0x4F	/* Utility Bus Chip Select B */
     76 
     77 /*
     78  * PIRQ# Route Control
     79  */
     80 #define	SIO_PCIREG_PIRQ0	0x60	/* PIRQ0 Route Control */
     81 #define	SIO_PCIREG_PIRQ1	0x61	/* PIRQ1 Route Control */
     82 #define	SIO_PCIREG_PIRQ2	0x62	/* PIRQ2 Route Control */
     83 #define	SIO_PCIREG_PIRQ3	0x63	/* PIRQ3 Route Control */
     84 #define	SIO_PCIREG_PIRQ_RTCTRL	SIO_PCIREG_PIRQ0
     85 
     86 	/* extract the PIRQx field from 32-bit reg */
     87 #define	PIRQ_RTCTRL_PIRQx(r, p)	(((r) >> ((p) * 8)) & 0xff)
     88 
     89 	/* bits within each PIRQx field */
     90 #define	PIRQ_RTCTRL_NOT_ROUTED	__BIT(7)    /* 0 == interrupt routed */
     91 #define	PIRQ_RTCTRL_IRQ		__BITS(0,3) /* PIRQ routed to this ISA IRQ */
     92 
     93 /*
     94  * System Management Interrupt (SMI)
     95  */
     96 #define	SIO_PCIREG_SMICNTL	0xA0	/* SMI Control */
     97 #define	SIO_PCIREG_SMIEN	0xA2	/* SMI Enable */
     98 #define	SIO_PCIREG_SEE		0xA4	/* System Event Enable */
     99 #define	SIO_PCIREG_FTMR		0xA8	/* Fast Off Timer */
    100 #define	SIO_PCIREG_SMIREQ	0xAA	/* SMI Request */
    101 
    102 
    103 /*
    104  * Non-Configuration Registers
    105  */
    106 
    107 /*
    108  * Control
    109  */
    110 #define	SIO_REG_RSTUB		0x060	/* Reset UBus */
    111 #define	SIO_REG_NMICTRL		0x061	/* NMI Status and Control */
    112 #define	SIO_REG_CMOSRAM		0x070	/* CMOS RAM Address and NMI Mask */
    113 #define	SIO_REG_NMIMASK		0x070	/* CMOS RAM Address and NMI Mask */
    114 #define	SIO_REG_PORT92		0x092	/* Port 92 */
    115 #define	SIO_REG_CPERR		0x0F0	/* Coprocessor Error */
    116 
    117 /*
    118  * Interrupt
    119  */
    120 #define	SIO_REG_ICU1		0x020	/* Intr. Controller #1 Control */
    121 #define	SIO_REG_ICU1MASK	0x021	/* Intr. Controller #1 Mask */
    122 #define	SIO_REG_ICU2		0x0A0	/* Intr. Controller #2 Control */
    123 #define	SIO_REG_ICU2MASK	0x0A1	/* Intr. Controller #2 Mask */
    124 #define	SIO_REG_ICU1ELC		0x4D0	/* #1's Edge/Level Control */
    125 #define	SIO_REG_ICU2ELC		0x4D1	/* #2's Edge/Level Control */
    126 #define	SIO_ICUSIZE		16	/* I/O Port Sizes */
    127 
    128 /*
    129  * Timer
    130  */
    131 /* XXX need Timer definitions */
    132 
    133 /*
    134  * DMA
    135  */
    136 /* XXX need DMA definitions */
    137