119 lines
4.9 KiB
C
119 lines
4.9 KiB
C
/* $NetBSD: memcreg.h,v 1.1 2000/11/24 09:42:10 scw Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Steve C. Woodford.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Register definitions for the MEMECC and MEMC040 devices.
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*/
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#ifndef _MVME68K_MEMCREG_H
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#define _MVME68K_MEMCREG_H
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/*
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* Size, in bytes, of the memory controller's register set
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* (Actually, the MEMC040's register set is only 0x20 bytes in size, but
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* we go with the larger of the two).
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*/
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#define MEMC_REGSIZE 0x80
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/* Both memory controllers share some registers in common */
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#define MEMC_REG_CHIP_ID 0x00
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#define MEMC_CHIP_ID_MEMC040 0x80 /* It's a MEMC040 */
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#define MEMC_CHIP_ID_MEMECC 0x81 /* It's a MEMECC */
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/* Revision of the ASIC */
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#define MEMC_REG_CHIP_REVISION 0x04
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/* Configuration of the memory block controlled by this ASIC */
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#define MEMC_REG_MEMORY_CONFIG 0x08
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#define MEMC_MEMORY_CONFIG_2_BYTES(x) (0x400000 << ((x) & 0x07))
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#define MEMC_MEMORY_CONFIG_2_MB(x) (4 << ((x) & 0x07))
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#define MEMC040_MEMORY_CONFIG_EXTPEN (1u << 3) /* External parity enabled */
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#define MEMC040_MEMORY_CONFIG_WPB (1u << 4) /* Write Per Bit mode */
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#define MEMC_MEMORY_CONFIG_FSTRD (1u << 5) /* Fast RAM Read enabled */
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/* Where, in the cpu's address space, does this memory appear? */
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#define MEMC_REG_BASE_ADDRESS_HI 0x14
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#define MEMC_REG_BASE_ADDRESS_LO 0x18
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#define MEMC_BASE_ADDRESS(hi,lo) (((hi) << 24) | (((lo) & 0xc0) << 22))
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/* Tells the memory controller what the board's Bus Clock frequency is */
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#define MEMC_REG_BUS_CLOCK 0x1c
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/* Register offsets and definitions for the Parity Memory Controller */
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#define MEMC040_REG_ALT_STATUS 0x0c /* Not used */
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#define MEMC040_REG_ALT_CONTROL 0x10 /* Not used */
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/* Memory Control Register */
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#define MEMC040_REG_RAM_CONTROL 0x18
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#define MEMC040_RAM_CONTROL_RAMEN (1u << 0)
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#define MEMC040_RAM_CONTROL_PAREN (1u << 1)
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#define MEMC040_RAM_CONTROL_PARINT (1u << 2)
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#define MEMC040_RAM_CONTROL_WWP (1u << 3)
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#define MEMC040_RAM_CONTROL_SWAIT (1u << 4)
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#define MEMC040_RAM_CONTROL_DMCTL (1u << 5)
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/* Register offsets and definitions for the ECC Memory Controller */
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#define MEMECC_REG_DRAM_CONTROL 0x18
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#define MEMECC_REG_DATA_CONTROL 0x20
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#define MEMECC_REG_SCRUB_CONTROL 0x24
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#define MEMECC_REG_SCRUB_PERIOD_HI 0x28
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#define MEMECC_REG_SCRUB_PERIOD_LO 0x2c
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#define MEMECC_REG_CHIP_PRESCALE 0x30
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#define MEMECC_REG_SCRUB_TIME_ONOFF 0x34
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#define MEMECC_REG_SCRUB_PRESCALE_HI 0x38
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#define MEMECC_REG_SCRUB_PRESCALE_MID 0x3c
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#define MEMECC_REG_SCRUB_PRESCALE_LO 0x40
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#define MEMECC_REG_SCRUB_TIMER_HI 0x44
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#define MEMECC_REG_SCRUB_TIMER_LO 0x48
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#define MEMECC_REG_SCRUB_ADDR_CNTR_HIHI 0x4c
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#define MEMECC_REG_SCRUB_ADDR_CNTR_HI 0x50
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#define MEMECC_REG_SCRUB_ADDR_CNTR_MID 0x54
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#define MEMECC_REG_SCRUB_ADDR_CNTR_LO 0x58
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#define MEMECC_REG_ERROR_LOGGER 0x5c
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#define MEMECC_REG_ERROR_ADDRESS_HIHI 0x60
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#define MEMECC_REG_ERROR_ADDRESS_HI 0x64
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#define MEMECC_REG_ERROR_ADDRESS_MID 0x68
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#define MEMECC_REG_ERROR_ADDRESS_LO 0x6c
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#define MEMECC_REG_ERROR_SYNDROME 0x70
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#define MEMECC_REG_DEFAULTS1 0x74
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#define MEMECC_REG_DEFAULTS2 0x78
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#define MEMECC_REG_SDRAM_CONFIG 0x7c
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#endif /* _MVME68K_MEMCREG_H */
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