/*      $NetBSD: memerr.h,v 1.4 2018/02/08 09:05:18 dholland Exp $ */

/*
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * All advertising materials mentioning features or use of this software
 * must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Lawrence Berkeley Laboratory.
 *
 * 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. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
 *
 *      @(#)memreg.h    8.1 (Berkeley) 6/11/93
 */

/*
 * Sun3 memory error register.
 *
 * All Sun3 memory systems use either parity checking or
 * Error Correction Coding (ECC).  A memory error causes
 * the Memory Error Register (MER) to latch information
 * about the location and type of error, and if the MER
 * interrupt is enabled, generateds a level 7 interrupt.
 * The latched information persists (even if more errors
 * occur) until the MER is cleared by a write (at mer_er).
 */


struct memerr {
        volatile u_char me_csr;         /* MER control/status reg. */
        volatile u_char me__pad[3];
        volatile u_int  me_vaddr;
};

/*
 * Bits in me_csr common between ECC/parity memory systems:
 */
#define ME_CSR_IPEND    0x80    /* (ro) error interrupt pending */
#define ME_CSR_IENA     0x40    /* (rw) error interrupt enable */

/*
 *  Bits in me_csr on parity-checked memory system:
 */
#define ME_PAR_TEST     0x20    /* (rw) write inverse parity */
#define ME_PAR_CHECK    0x10    /* (rw) enable parity checking */
#define ME_PAR_ERR3     0x08    /* (ro) parity error in <24..31> */
#define ME_PAR_ERR2     0x04    /* (ro) parity error in <16..23> */
#define ME_PAR_ERR1     0x02    /* (ro) parity error in <8..15> */
#define ME_PAR_ERR0     0x01    /* (ro) parity error in <0..7> */
#define ME_PAR_EMASK    0x0F    /* (ro) mask of above four */
#define ME_PAR_STR      "\20\10IPEND\7IENA\6TEST\5CHK\4ERR3\3ERR2\2ERR1\1ERR0"

/*
 *  Bits in me_csr on an ECC memory system:
 */
#define ME_ECC_BUSLK    0x20    /* (rw) hold memory bus mastership */
#define ME_ECC_CE_ENA   0x10    /* (rw) enable CE recording */
#define ME_ECC_WBTMO    0x08    /* (ro) write-back timeout */
#define ME_ECC_WBERR    0x04    /* (ro) write-back error */
#define ME_ECC_UE               0x02    /* (ro) UE, uncorrectable error  */
#define ME_ECC_CE               0x01    /* (ro) CE, correctable (single bit) error */
#define ME_ECC_EMASK    0x0F    /* (ro) mask for some ECC error occurring */
#define ME_ECC_STR      "\20\10IPEND\7IENA\6BUSLK\5CE_ENA\4TMOUT\3WBERR\2UE\1CE"