* Copyright (c) 1992, 1993

/* $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"