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![Dinh Nguyen](/assets/img/avatar_default.png)
Add support for version 3.80a of the Synopsys DDR controller. This version of the controller has the following differences: - UE/CE are auto cleared - Interrupts are supported by default Signed-off-by: Dinh Nguyen <dinguyen@kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Michal Simek <michal.simek@xilinx.com> Link: https://lkml.kernel.org/r/20211012190709.1504152-2-dinguyen@kernel.org
1447 lines
38 KiB
C
1447 lines
38 KiB
C
/*
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* Synopsys DDR ECC Driver
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* This driver is based on ppc4xx_edac.c drivers
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*
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* Copyright (C) 2012 - 2014 Xilinx, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details
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*/
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#include <linux/edac.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/interrupt.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include "edac_module.h"
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/* Number of cs_rows needed per memory controller */
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#define SYNPS_EDAC_NR_CSROWS 1
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/* Number of channels per memory controller */
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#define SYNPS_EDAC_NR_CHANS 1
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/* Granularity of reported error in bytes */
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#define SYNPS_EDAC_ERR_GRAIN 1
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#define SYNPS_EDAC_MSG_SIZE 256
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#define SYNPS_EDAC_MOD_STRING "synps_edac"
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#define SYNPS_EDAC_MOD_VER "1"
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/* Synopsys DDR memory controller registers that are relevant to ECC */
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#define CTRL_OFST 0x0
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#define T_ZQ_OFST 0xA4
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/* ECC control register */
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#define ECC_CTRL_OFST 0xC4
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/* ECC log register */
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#define CE_LOG_OFST 0xC8
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/* ECC address register */
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#define CE_ADDR_OFST 0xCC
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/* ECC data[31:0] register */
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#define CE_DATA_31_0_OFST 0xD0
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/* Uncorrectable error info registers */
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#define UE_LOG_OFST 0xDC
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#define UE_ADDR_OFST 0xE0
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#define UE_DATA_31_0_OFST 0xE4
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#define STAT_OFST 0xF0
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#define SCRUB_OFST 0xF4
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/* Control register bit field definitions */
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#define CTRL_BW_MASK 0xC
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#define CTRL_BW_SHIFT 2
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#define DDRCTL_WDTH_16 1
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#define DDRCTL_WDTH_32 0
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/* ZQ register bit field definitions */
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#define T_ZQ_DDRMODE_MASK 0x2
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/* ECC control register bit field definitions */
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#define ECC_CTRL_CLR_CE_ERR 0x2
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#define ECC_CTRL_CLR_UE_ERR 0x1
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/* ECC correctable/uncorrectable error log register definitions */
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#define LOG_VALID 0x1
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#define CE_LOG_BITPOS_MASK 0xFE
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#define CE_LOG_BITPOS_SHIFT 1
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/* ECC correctable/uncorrectable error address register definitions */
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#define ADDR_COL_MASK 0xFFF
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#define ADDR_ROW_MASK 0xFFFF000
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#define ADDR_ROW_SHIFT 12
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#define ADDR_BANK_MASK 0x70000000
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#define ADDR_BANK_SHIFT 28
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/* ECC statistic register definitions */
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#define STAT_UECNT_MASK 0xFF
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#define STAT_CECNT_MASK 0xFF00
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#define STAT_CECNT_SHIFT 8
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/* ECC scrub register definitions */
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#define SCRUB_MODE_MASK 0x7
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#define SCRUB_MODE_SECDED 0x4
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/* DDR ECC Quirks */
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#define DDR_ECC_INTR_SUPPORT BIT(0)
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#define DDR_ECC_DATA_POISON_SUPPORT BIT(1)
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#define DDR_ECC_INTR_SELF_CLEAR BIT(2)
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/* ZynqMP Enhanced DDR memory controller registers that are relevant to ECC */
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/* ECC Configuration Registers */
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#define ECC_CFG0_OFST 0x70
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#define ECC_CFG1_OFST 0x74
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/* ECC Status Register */
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#define ECC_STAT_OFST 0x78
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/* ECC Clear Register */
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#define ECC_CLR_OFST 0x7C
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/* ECC Error count Register */
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#define ECC_ERRCNT_OFST 0x80
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/* ECC Corrected Error Address Register */
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#define ECC_CEADDR0_OFST 0x84
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#define ECC_CEADDR1_OFST 0x88
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/* ECC Syndrome Registers */
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#define ECC_CSYND0_OFST 0x8C
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#define ECC_CSYND1_OFST 0x90
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#define ECC_CSYND2_OFST 0x94
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/* ECC Bit Mask0 Address Register */
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#define ECC_BITMASK0_OFST 0x98
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#define ECC_BITMASK1_OFST 0x9C
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#define ECC_BITMASK2_OFST 0xA0
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/* ECC UnCorrected Error Address Register */
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#define ECC_UEADDR0_OFST 0xA4
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#define ECC_UEADDR1_OFST 0xA8
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/* ECC Syndrome Registers */
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#define ECC_UESYND0_OFST 0xAC
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#define ECC_UESYND1_OFST 0xB0
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#define ECC_UESYND2_OFST 0xB4
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/* ECC Poison Address Reg */
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#define ECC_POISON0_OFST 0xB8
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#define ECC_POISON1_OFST 0xBC
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#define ECC_ADDRMAP0_OFFSET 0x200
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/* Control register bitfield definitions */
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#define ECC_CTRL_BUSWIDTH_MASK 0x3000
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#define ECC_CTRL_BUSWIDTH_SHIFT 12
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#define ECC_CTRL_CLR_CE_ERRCNT BIT(2)
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#define ECC_CTRL_CLR_UE_ERRCNT BIT(3)
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/* DDR Control Register width definitions */
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#define DDRCTL_EWDTH_16 2
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#define DDRCTL_EWDTH_32 1
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#define DDRCTL_EWDTH_64 0
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/* ECC status register definitions */
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#define ECC_STAT_UECNT_MASK 0xF0000
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#define ECC_STAT_UECNT_SHIFT 16
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#define ECC_STAT_CECNT_MASK 0xF00
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#define ECC_STAT_CECNT_SHIFT 8
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#define ECC_STAT_BITNUM_MASK 0x7F
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/* DDR QOS Interrupt register definitions */
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#define DDR_QOS_IRQ_STAT_OFST 0x20200
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#define DDR_QOSUE_MASK 0x4
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#define DDR_QOSCE_MASK 0x2
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#define ECC_CE_UE_INTR_MASK 0x6
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#define DDR_QOS_IRQ_EN_OFST 0x20208
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#define DDR_QOS_IRQ_DB_OFST 0x2020C
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/* DDR QOS Interrupt register definitions */
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#define DDR_UE_MASK BIT(9)
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#define DDR_CE_MASK BIT(8)
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/* ECC Corrected Error Register Mask and Shifts*/
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#define ECC_CEADDR0_RW_MASK 0x3FFFF
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#define ECC_CEADDR0_RNK_MASK BIT(24)
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#define ECC_CEADDR1_BNKGRP_MASK 0x3000000
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#define ECC_CEADDR1_BNKNR_MASK 0x70000
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#define ECC_CEADDR1_BLKNR_MASK 0xFFF
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#define ECC_CEADDR1_BNKGRP_SHIFT 24
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#define ECC_CEADDR1_BNKNR_SHIFT 16
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/* ECC Poison register shifts */
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#define ECC_POISON0_RANK_SHIFT 24
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#define ECC_POISON0_RANK_MASK BIT(24)
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#define ECC_POISON0_COLUMN_SHIFT 0
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#define ECC_POISON0_COLUMN_MASK 0xFFF
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#define ECC_POISON1_BG_SHIFT 28
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#define ECC_POISON1_BG_MASK 0x30000000
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#define ECC_POISON1_BANKNR_SHIFT 24
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#define ECC_POISON1_BANKNR_MASK 0x7000000
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#define ECC_POISON1_ROW_SHIFT 0
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#define ECC_POISON1_ROW_MASK 0x3FFFF
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/* DDR Memory type defines */
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#define MEM_TYPE_DDR3 0x1
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#define MEM_TYPE_LPDDR3 0x8
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#define MEM_TYPE_DDR2 0x4
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#define MEM_TYPE_DDR4 0x10
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#define MEM_TYPE_LPDDR4 0x20
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/* DDRC Software control register */
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#define DDRC_SWCTL 0x320
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/* DDRC ECC CE & UE poison mask */
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#define ECC_CEPOISON_MASK 0x3
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#define ECC_UEPOISON_MASK 0x1
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/* DDRC Device config masks */
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#define DDRC_MSTR_CFG_MASK 0xC0000000
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#define DDRC_MSTR_CFG_SHIFT 30
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#define DDRC_MSTR_CFG_X4_MASK 0x0
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#define DDRC_MSTR_CFG_X8_MASK 0x1
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#define DDRC_MSTR_CFG_X16_MASK 0x2
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#define DDRC_MSTR_CFG_X32_MASK 0x3
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#define DDR_MAX_ROW_SHIFT 18
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#define DDR_MAX_COL_SHIFT 14
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#define DDR_MAX_BANK_SHIFT 3
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#define DDR_MAX_BANKGRP_SHIFT 2
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#define ROW_MAX_VAL_MASK 0xF
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#define COL_MAX_VAL_MASK 0xF
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#define BANK_MAX_VAL_MASK 0x1F
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#define BANKGRP_MAX_VAL_MASK 0x1F
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#define RANK_MAX_VAL_MASK 0x1F
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#define ROW_B0_BASE 6
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#define ROW_B1_BASE 7
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#define ROW_B2_BASE 8
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#define ROW_B3_BASE 9
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#define ROW_B4_BASE 10
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#define ROW_B5_BASE 11
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#define ROW_B6_BASE 12
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#define ROW_B7_BASE 13
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#define ROW_B8_BASE 14
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#define ROW_B9_BASE 15
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#define ROW_B10_BASE 16
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#define ROW_B11_BASE 17
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#define ROW_B12_BASE 18
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#define ROW_B13_BASE 19
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#define ROW_B14_BASE 20
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#define ROW_B15_BASE 21
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#define ROW_B16_BASE 22
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#define ROW_B17_BASE 23
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#define COL_B2_BASE 2
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#define COL_B3_BASE 3
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#define COL_B4_BASE 4
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#define COL_B5_BASE 5
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#define COL_B6_BASE 6
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#define COL_B7_BASE 7
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#define COL_B8_BASE 8
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#define COL_B9_BASE 9
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#define COL_B10_BASE 10
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#define COL_B11_BASE 11
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#define COL_B12_BASE 12
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#define COL_B13_BASE 13
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#define BANK_B0_BASE 2
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#define BANK_B1_BASE 3
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#define BANK_B2_BASE 4
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#define BANKGRP_B0_BASE 2
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#define BANKGRP_B1_BASE 3
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#define RANK_B0_BASE 6
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/**
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* struct ecc_error_info - ECC error log information.
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* @row: Row number.
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* @col: Column number.
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* @bank: Bank number.
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* @bitpos: Bit position.
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* @data: Data causing the error.
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* @bankgrpnr: Bank group number.
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* @blknr: Block number.
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*/
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struct ecc_error_info {
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u32 row;
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u32 col;
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u32 bank;
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u32 bitpos;
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u32 data;
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u32 bankgrpnr;
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u32 blknr;
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};
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/**
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* struct synps_ecc_status - ECC status information to report.
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* @ce_cnt: Correctable error count.
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* @ue_cnt: Uncorrectable error count.
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* @ceinfo: Correctable error log information.
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* @ueinfo: Uncorrectable error log information.
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*/
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struct synps_ecc_status {
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u32 ce_cnt;
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u32 ue_cnt;
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struct ecc_error_info ceinfo;
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struct ecc_error_info ueinfo;
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};
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/**
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* struct synps_edac_priv - DDR memory controller private instance data.
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* @baseaddr: Base address of the DDR controller.
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* @message: Buffer for framing the event specific info.
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* @stat: ECC status information.
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* @p_data: Platform data.
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* @ce_cnt: Correctable Error count.
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* @ue_cnt: Uncorrectable Error count.
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* @poison_addr: Data poison address.
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* @row_shift: Bit shifts for row bit.
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* @col_shift: Bit shifts for column bit.
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* @bank_shift: Bit shifts for bank bit.
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* @bankgrp_shift: Bit shifts for bank group bit.
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* @rank_shift: Bit shifts for rank bit.
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*/
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struct synps_edac_priv {
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void __iomem *baseaddr;
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char message[SYNPS_EDAC_MSG_SIZE];
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struct synps_ecc_status stat;
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const struct synps_platform_data *p_data;
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u32 ce_cnt;
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u32 ue_cnt;
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#ifdef CONFIG_EDAC_DEBUG
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ulong poison_addr;
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u32 row_shift[18];
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u32 col_shift[14];
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u32 bank_shift[3];
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u32 bankgrp_shift[2];
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u32 rank_shift[1];
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#endif
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};
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/**
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* struct synps_platform_data - synps platform data structure.
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* @get_error_info: Get EDAC error info.
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* @get_mtype: Get mtype.
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* @get_dtype: Get dtype.
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* @get_ecc_state: Get ECC state.
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* @quirks: To differentiate IPs.
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*/
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struct synps_platform_data {
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int (*get_error_info)(struct synps_edac_priv *priv);
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enum mem_type (*get_mtype)(const void __iomem *base);
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enum dev_type (*get_dtype)(const void __iomem *base);
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bool (*get_ecc_state)(void __iomem *base);
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int quirks;
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};
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/**
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* zynq_get_error_info - Get the current ECC error info.
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* @priv: DDR memory controller private instance data.
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*
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* Return: one if there is no error, otherwise zero.
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*/
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static int zynq_get_error_info(struct synps_edac_priv *priv)
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{
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struct synps_ecc_status *p;
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u32 regval, clearval = 0;
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void __iomem *base;
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base = priv->baseaddr;
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p = &priv->stat;
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regval = readl(base + STAT_OFST);
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if (!regval)
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return 1;
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p->ce_cnt = (regval & STAT_CECNT_MASK) >> STAT_CECNT_SHIFT;
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p->ue_cnt = regval & STAT_UECNT_MASK;
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regval = readl(base + CE_LOG_OFST);
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if (!(p->ce_cnt && (regval & LOG_VALID)))
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goto ue_err;
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p->ceinfo.bitpos = (regval & CE_LOG_BITPOS_MASK) >> CE_LOG_BITPOS_SHIFT;
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regval = readl(base + CE_ADDR_OFST);
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p->ceinfo.row = (regval & ADDR_ROW_MASK) >> ADDR_ROW_SHIFT;
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p->ceinfo.col = regval & ADDR_COL_MASK;
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p->ceinfo.bank = (regval & ADDR_BANK_MASK) >> ADDR_BANK_SHIFT;
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p->ceinfo.data = readl(base + CE_DATA_31_0_OFST);
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edac_dbg(3, "CE bit position: %d data: %d\n", p->ceinfo.bitpos,
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p->ceinfo.data);
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clearval = ECC_CTRL_CLR_CE_ERR;
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ue_err:
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regval = readl(base + UE_LOG_OFST);
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if (!(p->ue_cnt && (regval & LOG_VALID)))
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goto out;
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regval = readl(base + UE_ADDR_OFST);
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p->ueinfo.row = (regval & ADDR_ROW_MASK) >> ADDR_ROW_SHIFT;
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p->ueinfo.col = regval & ADDR_COL_MASK;
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p->ueinfo.bank = (regval & ADDR_BANK_MASK) >> ADDR_BANK_SHIFT;
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p->ueinfo.data = readl(base + UE_DATA_31_0_OFST);
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clearval |= ECC_CTRL_CLR_UE_ERR;
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out:
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writel(clearval, base + ECC_CTRL_OFST);
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writel(0x0, base + ECC_CTRL_OFST);
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return 0;
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}
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/**
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* zynqmp_get_error_info - Get the current ECC error info.
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* @priv: DDR memory controller private instance data.
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*
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* Return: one if there is no error otherwise returns zero.
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*/
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static int zynqmp_get_error_info(struct synps_edac_priv *priv)
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{
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struct synps_ecc_status *p;
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u32 regval, clearval = 0;
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void __iomem *base;
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base = priv->baseaddr;
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p = &priv->stat;
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regval = readl(base + ECC_STAT_OFST);
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if (!regval)
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return 1;
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p->ce_cnt = (regval & ECC_STAT_CECNT_MASK) >> ECC_STAT_CECNT_SHIFT;
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p->ue_cnt = (regval & ECC_STAT_UECNT_MASK) >> ECC_STAT_UECNT_SHIFT;
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if (!p->ce_cnt)
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goto ue_err;
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p->ceinfo.bitpos = (regval & ECC_STAT_BITNUM_MASK);
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regval = readl(base + ECC_CEADDR0_OFST);
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p->ceinfo.row = (regval & ECC_CEADDR0_RW_MASK);
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regval = readl(base + ECC_CEADDR1_OFST);
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p->ceinfo.bank = (regval & ECC_CEADDR1_BNKNR_MASK) >>
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ECC_CEADDR1_BNKNR_SHIFT;
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p->ceinfo.bankgrpnr = (regval & ECC_CEADDR1_BNKGRP_MASK) >>
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ECC_CEADDR1_BNKGRP_SHIFT;
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p->ceinfo.blknr = (regval & ECC_CEADDR1_BLKNR_MASK);
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p->ceinfo.data = readl(base + ECC_CSYND0_OFST);
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edac_dbg(2, "ECCCSYN0: 0x%08X ECCCSYN1: 0x%08X ECCCSYN2: 0x%08X\n",
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readl(base + ECC_CSYND0_OFST), readl(base + ECC_CSYND1_OFST),
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readl(base + ECC_CSYND2_OFST));
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ue_err:
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if (!p->ue_cnt)
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goto out;
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regval = readl(base + ECC_UEADDR0_OFST);
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p->ueinfo.row = (regval & ECC_CEADDR0_RW_MASK);
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regval = readl(base + ECC_UEADDR1_OFST);
|
|
p->ueinfo.bankgrpnr = (regval & ECC_CEADDR1_BNKGRP_MASK) >>
|
|
ECC_CEADDR1_BNKGRP_SHIFT;
|
|
p->ueinfo.bank = (regval & ECC_CEADDR1_BNKNR_MASK) >>
|
|
ECC_CEADDR1_BNKNR_SHIFT;
|
|
p->ueinfo.blknr = (regval & ECC_CEADDR1_BLKNR_MASK);
|
|
p->ueinfo.data = readl(base + ECC_UESYND0_OFST);
|
|
out:
|
|
clearval = ECC_CTRL_CLR_CE_ERR | ECC_CTRL_CLR_CE_ERRCNT;
|
|
clearval |= ECC_CTRL_CLR_UE_ERR | ECC_CTRL_CLR_UE_ERRCNT;
|
|
writel(clearval, base + ECC_CLR_OFST);
|
|
writel(0x0, base + ECC_CLR_OFST);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* handle_error - Handle Correctable and Uncorrectable errors.
|
|
* @mci: EDAC memory controller instance.
|
|
* @p: Synopsys ECC status structure.
|
|
*
|
|
* Handles ECC correctable and uncorrectable errors.
|
|
*/
|
|
static void handle_error(struct mem_ctl_info *mci, struct synps_ecc_status *p)
|
|
{
|
|
struct synps_edac_priv *priv = mci->pvt_info;
|
|
struct ecc_error_info *pinf;
|
|
|
|
if (p->ce_cnt) {
|
|
pinf = &p->ceinfo;
|
|
if (priv->p_data->quirks & DDR_ECC_INTR_SUPPORT) {
|
|
snprintf(priv->message, SYNPS_EDAC_MSG_SIZE,
|
|
"DDR ECC error type:%s Row %d Bank %d BankGroup Number %d Block Number %d Bit Position: %d Data: 0x%08x",
|
|
"CE", pinf->row, pinf->bank,
|
|
pinf->bankgrpnr, pinf->blknr,
|
|
pinf->bitpos, pinf->data);
|
|
} else {
|
|
snprintf(priv->message, SYNPS_EDAC_MSG_SIZE,
|
|
"DDR ECC error type:%s Row %d Bank %d Col %d Bit Position: %d Data: 0x%08x",
|
|
"CE", pinf->row, pinf->bank, pinf->col,
|
|
pinf->bitpos, pinf->data);
|
|
}
|
|
|
|
edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci,
|
|
p->ce_cnt, 0, 0, 0, 0, 0, -1,
|
|
priv->message, "");
|
|
}
|
|
|
|
if (p->ue_cnt) {
|
|
pinf = &p->ueinfo;
|
|
if (priv->p_data->quirks & DDR_ECC_INTR_SUPPORT) {
|
|
snprintf(priv->message, SYNPS_EDAC_MSG_SIZE,
|
|
"DDR ECC error type :%s Row %d Bank %d BankGroup Number %d Block Number %d",
|
|
"UE", pinf->row, pinf->bank,
|
|
pinf->bankgrpnr, pinf->blknr);
|
|
} else {
|
|
snprintf(priv->message, SYNPS_EDAC_MSG_SIZE,
|
|
"DDR ECC error type :%s Row %d Bank %d Col %d ",
|
|
"UE", pinf->row, pinf->bank, pinf->col);
|
|
}
|
|
|
|
edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci,
|
|
p->ue_cnt, 0, 0, 0, 0, 0, -1,
|
|
priv->message, "");
|
|
}
|
|
|
|
memset(p, 0, sizeof(*p));
|
|
}
|
|
|
|
/**
|
|
* intr_handler - Interrupt Handler for ECC interrupts.
|
|
* @irq: IRQ number.
|
|
* @dev_id: Device ID.
|
|
*
|
|
* Return: IRQ_NONE, if interrupt not set or IRQ_HANDLED otherwise.
|
|
*/
|
|
static irqreturn_t intr_handler(int irq, void *dev_id)
|
|
{
|
|
const struct synps_platform_data *p_data;
|
|
struct mem_ctl_info *mci = dev_id;
|
|
struct synps_edac_priv *priv;
|
|
int status, regval;
|
|
|
|
priv = mci->pvt_info;
|
|
p_data = priv->p_data;
|
|
|
|
/*
|
|
* v3.0 of the controller has the ce/ue bits cleared automatically,
|
|
* so this condition does not apply.
|
|
*/
|
|
if (!(priv->p_data->quirks & DDR_ECC_INTR_SELF_CLEAR)) {
|
|
regval = readl(priv->baseaddr + DDR_QOS_IRQ_STAT_OFST);
|
|
regval &= (DDR_QOSCE_MASK | DDR_QOSUE_MASK);
|
|
if (!(regval & ECC_CE_UE_INTR_MASK))
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
status = p_data->get_error_info(priv);
|
|
if (status)
|
|
return IRQ_NONE;
|
|
|
|
priv->ce_cnt += priv->stat.ce_cnt;
|
|
priv->ue_cnt += priv->stat.ue_cnt;
|
|
handle_error(mci, &priv->stat);
|
|
|
|
edac_dbg(3, "Total error count CE %d UE %d\n",
|
|
priv->ce_cnt, priv->ue_cnt);
|
|
/* v3.0 of the controller does not have this register */
|
|
if (!(priv->p_data->quirks & DDR_ECC_INTR_SELF_CLEAR))
|
|
writel(regval, priv->baseaddr + DDR_QOS_IRQ_STAT_OFST);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/**
|
|
* check_errors - Check controller for ECC errors.
|
|
* @mci: EDAC memory controller instance.
|
|
*
|
|
* Check and post ECC errors. Called by the polling thread.
|
|
*/
|
|
static void check_errors(struct mem_ctl_info *mci)
|
|
{
|
|
const struct synps_platform_data *p_data;
|
|
struct synps_edac_priv *priv;
|
|
int status;
|
|
|
|
priv = mci->pvt_info;
|
|
p_data = priv->p_data;
|
|
|
|
status = p_data->get_error_info(priv);
|
|
if (status)
|
|
return;
|
|
|
|
priv->ce_cnt += priv->stat.ce_cnt;
|
|
priv->ue_cnt += priv->stat.ue_cnt;
|
|
handle_error(mci, &priv->stat);
|
|
|
|
edac_dbg(3, "Total error count CE %d UE %d\n",
|
|
priv->ce_cnt, priv->ue_cnt);
|
|
}
|
|
|
|
/**
|
|
* zynq_get_dtype - Return the controller memory width.
|
|
* @base: DDR memory controller base address.
|
|
*
|
|
* Get the EDAC device type width appropriate for the current controller
|
|
* configuration.
|
|
*
|
|
* Return: a device type width enumeration.
|
|
*/
|
|
static enum dev_type zynq_get_dtype(const void __iomem *base)
|
|
{
|
|
enum dev_type dt;
|
|
u32 width;
|
|
|
|
width = readl(base + CTRL_OFST);
|
|
width = (width & CTRL_BW_MASK) >> CTRL_BW_SHIFT;
|
|
|
|
switch (width) {
|
|
case DDRCTL_WDTH_16:
|
|
dt = DEV_X2;
|
|
break;
|
|
case DDRCTL_WDTH_32:
|
|
dt = DEV_X4;
|
|
break;
|
|
default:
|
|
dt = DEV_UNKNOWN;
|
|
}
|
|
|
|
return dt;
|
|
}
|
|
|
|
/**
|
|
* zynqmp_get_dtype - Return the controller memory width.
|
|
* @base: DDR memory controller base address.
|
|
*
|
|
* Get the EDAC device type width appropriate for the current controller
|
|
* configuration.
|
|
*
|
|
* Return: a device type width enumeration.
|
|
*/
|
|
static enum dev_type zynqmp_get_dtype(const void __iomem *base)
|
|
{
|
|
enum dev_type dt;
|
|
u32 width;
|
|
|
|
width = readl(base + CTRL_OFST);
|
|
width = (width & ECC_CTRL_BUSWIDTH_MASK) >> ECC_CTRL_BUSWIDTH_SHIFT;
|
|
switch (width) {
|
|
case DDRCTL_EWDTH_16:
|
|
dt = DEV_X2;
|
|
break;
|
|
case DDRCTL_EWDTH_32:
|
|
dt = DEV_X4;
|
|
break;
|
|
case DDRCTL_EWDTH_64:
|
|
dt = DEV_X8;
|
|
break;
|
|
default:
|
|
dt = DEV_UNKNOWN;
|
|
}
|
|
|
|
return dt;
|
|
}
|
|
|
|
/**
|
|
* zynq_get_ecc_state - Return the controller ECC enable/disable status.
|
|
* @base: DDR memory controller base address.
|
|
*
|
|
* Get the ECC enable/disable status of the controller.
|
|
*
|
|
* Return: true if enabled, otherwise false.
|
|
*/
|
|
static bool zynq_get_ecc_state(void __iomem *base)
|
|
{
|
|
enum dev_type dt;
|
|
u32 ecctype;
|
|
|
|
dt = zynq_get_dtype(base);
|
|
if (dt == DEV_UNKNOWN)
|
|
return false;
|
|
|
|
ecctype = readl(base + SCRUB_OFST) & SCRUB_MODE_MASK;
|
|
if ((ecctype == SCRUB_MODE_SECDED) && (dt == DEV_X2))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* zynqmp_get_ecc_state - Return the controller ECC enable/disable status.
|
|
* @base: DDR memory controller base address.
|
|
*
|
|
* Get the ECC enable/disable status for the controller.
|
|
*
|
|
* Return: a ECC status boolean i.e true/false - enabled/disabled.
|
|
*/
|
|
static bool zynqmp_get_ecc_state(void __iomem *base)
|
|
{
|
|
enum dev_type dt;
|
|
u32 ecctype;
|
|
|
|
dt = zynqmp_get_dtype(base);
|
|
if (dt == DEV_UNKNOWN)
|
|
return false;
|
|
|
|
ecctype = readl(base + ECC_CFG0_OFST) & SCRUB_MODE_MASK;
|
|
if ((ecctype == SCRUB_MODE_SECDED) &&
|
|
((dt == DEV_X2) || (dt == DEV_X4) || (dt == DEV_X8)))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* get_memsize - Read the size of the attached memory device.
|
|
*
|
|
* Return: the memory size in bytes.
|
|
*/
|
|
static u32 get_memsize(void)
|
|
{
|
|
struct sysinfo inf;
|
|
|
|
si_meminfo(&inf);
|
|
|
|
return inf.totalram * inf.mem_unit;
|
|
}
|
|
|
|
/**
|
|
* zynq_get_mtype - Return the controller memory type.
|
|
* @base: Synopsys ECC status structure.
|
|
*
|
|
* Get the EDAC memory type appropriate for the current controller
|
|
* configuration.
|
|
*
|
|
* Return: a memory type enumeration.
|
|
*/
|
|
static enum mem_type zynq_get_mtype(const void __iomem *base)
|
|
{
|
|
enum mem_type mt;
|
|
u32 memtype;
|
|
|
|
memtype = readl(base + T_ZQ_OFST);
|
|
|
|
if (memtype & T_ZQ_DDRMODE_MASK)
|
|
mt = MEM_DDR3;
|
|
else
|
|
mt = MEM_DDR2;
|
|
|
|
return mt;
|
|
}
|
|
|
|
/**
|
|
* zynqmp_get_mtype - Returns controller memory type.
|
|
* @base: Synopsys ECC status structure.
|
|
*
|
|
* Get the EDAC memory type appropriate for the current controller
|
|
* configuration.
|
|
*
|
|
* Return: a memory type enumeration.
|
|
*/
|
|
static enum mem_type zynqmp_get_mtype(const void __iomem *base)
|
|
{
|
|
enum mem_type mt;
|
|
u32 memtype;
|
|
|
|
memtype = readl(base + CTRL_OFST);
|
|
|
|
if ((memtype & MEM_TYPE_DDR3) || (memtype & MEM_TYPE_LPDDR3))
|
|
mt = MEM_DDR3;
|
|
else if (memtype & MEM_TYPE_DDR2)
|
|
mt = MEM_RDDR2;
|
|
else if ((memtype & MEM_TYPE_LPDDR4) || (memtype & MEM_TYPE_DDR4))
|
|
mt = MEM_DDR4;
|
|
else
|
|
mt = MEM_EMPTY;
|
|
|
|
return mt;
|
|
}
|
|
|
|
/**
|
|
* init_csrows - Initialize the csrow data.
|
|
* @mci: EDAC memory controller instance.
|
|
*
|
|
* Initialize the chip select rows associated with the EDAC memory
|
|
* controller instance.
|
|
*/
|
|
static void init_csrows(struct mem_ctl_info *mci)
|
|
{
|
|
struct synps_edac_priv *priv = mci->pvt_info;
|
|
const struct synps_platform_data *p_data;
|
|
struct csrow_info *csi;
|
|
struct dimm_info *dimm;
|
|
u32 size, row;
|
|
int j;
|
|
|
|
p_data = priv->p_data;
|
|
|
|
for (row = 0; row < mci->nr_csrows; row++) {
|
|
csi = mci->csrows[row];
|
|
size = get_memsize();
|
|
|
|
for (j = 0; j < csi->nr_channels; j++) {
|
|
dimm = csi->channels[j]->dimm;
|
|
dimm->edac_mode = EDAC_SECDED;
|
|
dimm->mtype = p_data->get_mtype(priv->baseaddr);
|
|
dimm->nr_pages = (size >> PAGE_SHIFT) / csi->nr_channels;
|
|
dimm->grain = SYNPS_EDAC_ERR_GRAIN;
|
|
dimm->dtype = p_data->get_dtype(priv->baseaddr);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* mc_init - Initialize one driver instance.
|
|
* @mci: EDAC memory controller instance.
|
|
* @pdev: platform device.
|
|
*
|
|
* Perform initialization of the EDAC memory controller instance and
|
|
* related driver-private data associated with the memory controller the
|
|
* instance is bound to.
|
|
*/
|
|
static void mc_init(struct mem_ctl_info *mci, struct platform_device *pdev)
|
|
{
|
|
struct synps_edac_priv *priv;
|
|
|
|
mci->pdev = &pdev->dev;
|
|
priv = mci->pvt_info;
|
|
platform_set_drvdata(pdev, mci);
|
|
|
|
/* Initialize controller capabilities and configuration */
|
|
mci->mtype_cap = MEM_FLAG_DDR3 | MEM_FLAG_DDR2;
|
|
mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;
|
|
mci->scrub_cap = SCRUB_HW_SRC;
|
|
mci->scrub_mode = SCRUB_NONE;
|
|
|
|
mci->edac_cap = EDAC_FLAG_SECDED;
|
|
mci->ctl_name = "synps_ddr_controller";
|
|
mci->dev_name = SYNPS_EDAC_MOD_STRING;
|
|
mci->mod_name = SYNPS_EDAC_MOD_VER;
|
|
|
|
if (priv->p_data->quirks & DDR_ECC_INTR_SUPPORT) {
|
|
edac_op_state = EDAC_OPSTATE_INT;
|
|
} else {
|
|
edac_op_state = EDAC_OPSTATE_POLL;
|
|
mci->edac_check = check_errors;
|
|
}
|
|
|
|
mci->ctl_page_to_phys = NULL;
|
|
|
|
init_csrows(mci);
|
|
}
|
|
|
|
static void enable_intr(struct synps_edac_priv *priv)
|
|
{
|
|
/* Enable UE/CE Interrupts */
|
|
if (priv->p_data->quirks & DDR_ECC_INTR_SELF_CLEAR)
|
|
writel(DDR_UE_MASK | DDR_CE_MASK,
|
|
priv->baseaddr + ECC_CLR_OFST);
|
|
else
|
|
writel(DDR_QOSUE_MASK | DDR_QOSCE_MASK,
|
|
priv->baseaddr + DDR_QOS_IRQ_EN_OFST);
|
|
|
|
}
|
|
|
|
static void disable_intr(struct synps_edac_priv *priv)
|
|
{
|
|
/* Disable UE/CE Interrupts */
|
|
writel(DDR_QOSUE_MASK | DDR_QOSCE_MASK,
|
|
priv->baseaddr + DDR_QOS_IRQ_DB_OFST);
|
|
}
|
|
|
|
static int setup_irq(struct mem_ctl_info *mci,
|
|
struct platform_device *pdev)
|
|
{
|
|
struct synps_edac_priv *priv = mci->pvt_info;
|
|
int ret, irq;
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0) {
|
|
edac_printk(KERN_ERR, EDAC_MC,
|
|
"No IRQ %d in DT\n", irq);
|
|
return irq;
|
|
}
|
|
|
|
ret = devm_request_irq(&pdev->dev, irq, intr_handler,
|
|
0, dev_name(&pdev->dev), mci);
|
|
if (ret < 0) {
|
|
edac_printk(KERN_ERR, EDAC_MC, "Failed to request IRQ\n");
|
|
return ret;
|
|
}
|
|
|
|
enable_intr(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct synps_platform_data zynq_edac_def = {
|
|
.get_error_info = zynq_get_error_info,
|
|
.get_mtype = zynq_get_mtype,
|
|
.get_dtype = zynq_get_dtype,
|
|
.get_ecc_state = zynq_get_ecc_state,
|
|
.quirks = 0,
|
|
};
|
|
|
|
static const struct synps_platform_data zynqmp_edac_def = {
|
|
.get_error_info = zynqmp_get_error_info,
|
|
.get_mtype = zynqmp_get_mtype,
|
|
.get_dtype = zynqmp_get_dtype,
|
|
.get_ecc_state = zynqmp_get_ecc_state,
|
|
.quirks = (DDR_ECC_INTR_SUPPORT
|
|
#ifdef CONFIG_EDAC_DEBUG
|
|
| DDR_ECC_DATA_POISON_SUPPORT
|
|
#endif
|
|
),
|
|
};
|
|
|
|
static const struct synps_platform_data synopsys_edac_def = {
|
|
.get_error_info = zynqmp_get_error_info,
|
|
.get_mtype = zynqmp_get_mtype,
|
|
.get_dtype = zynqmp_get_dtype,
|
|
.get_ecc_state = zynqmp_get_ecc_state,
|
|
.quirks = (DDR_ECC_INTR_SUPPORT | DDR_ECC_INTR_SELF_CLEAR
|
|
#ifdef CONFIG_EDAC_DEBUG
|
|
| DDR_ECC_DATA_POISON_SUPPORT
|
|
#endif
|
|
),
|
|
};
|
|
|
|
|
|
static const struct of_device_id synps_edac_match[] = {
|
|
{
|
|
.compatible = "xlnx,zynq-ddrc-a05",
|
|
.data = (void *)&zynq_edac_def
|
|
},
|
|
{
|
|
.compatible = "xlnx,zynqmp-ddrc-2.40a",
|
|
.data = (void *)&zynqmp_edac_def
|
|
},
|
|
{
|
|
.compatible = "snps,ddrc-3.80a",
|
|
.data = (void *)&synopsys_edac_def
|
|
},
|
|
{
|
|
/* end of table */
|
|
}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, synps_edac_match);
|
|
|
|
#ifdef CONFIG_EDAC_DEBUG
|
|
#define to_mci(k) container_of(k, struct mem_ctl_info, dev)
|
|
|
|
/**
|
|
* ddr_poison_setup - Update poison registers.
|
|
* @priv: DDR memory controller private instance data.
|
|
*
|
|
* Update poison registers as per DDR mapping.
|
|
* Return: none.
|
|
*/
|
|
static void ddr_poison_setup(struct synps_edac_priv *priv)
|
|
{
|
|
int col = 0, row = 0, bank = 0, bankgrp = 0, rank = 0, regval;
|
|
int index;
|
|
ulong hif_addr = 0;
|
|
|
|
hif_addr = priv->poison_addr >> 3;
|
|
|
|
for (index = 0; index < DDR_MAX_ROW_SHIFT; index++) {
|
|
if (priv->row_shift[index])
|
|
row |= (((hif_addr >> priv->row_shift[index]) &
|
|
BIT(0)) << index);
|
|
else
|
|
break;
|
|
}
|
|
|
|
for (index = 0; index < DDR_MAX_COL_SHIFT; index++) {
|
|
if (priv->col_shift[index] || index < 3)
|
|
col |= (((hif_addr >> priv->col_shift[index]) &
|
|
BIT(0)) << index);
|
|
else
|
|
break;
|
|
}
|
|
|
|
for (index = 0; index < DDR_MAX_BANK_SHIFT; index++) {
|
|
if (priv->bank_shift[index])
|
|
bank |= (((hif_addr >> priv->bank_shift[index]) &
|
|
BIT(0)) << index);
|
|
else
|
|
break;
|
|
}
|
|
|
|
for (index = 0; index < DDR_MAX_BANKGRP_SHIFT; index++) {
|
|
if (priv->bankgrp_shift[index])
|
|
bankgrp |= (((hif_addr >> priv->bankgrp_shift[index])
|
|
& BIT(0)) << index);
|
|
else
|
|
break;
|
|
}
|
|
|
|
if (priv->rank_shift[0])
|
|
rank = (hif_addr >> priv->rank_shift[0]) & BIT(0);
|
|
|
|
regval = (rank << ECC_POISON0_RANK_SHIFT) & ECC_POISON0_RANK_MASK;
|
|
regval |= (col << ECC_POISON0_COLUMN_SHIFT) & ECC_POISON0_COLUMN_MASK;
|
|
writel(regval, priv->baseaddr + ECC_POISON0_OFST);
|
|
|
|
regval = (bankgrp << ECC_POISON1_BG_SHIFT) & ECC_POISON1_BG_MASK;
|
|
regval |= (bank << ECC_POISON1_BANKNR_SHIFT) & ECC_POISON1_BANKNR_MASK;
|
|
regval |= (row << ECC_POISON1_ROW_SHIFT) & ECC_POISON1_ROW_MASK;
|
|
writel(regval, priv->baseaddr + ECC_POISON1_OFST);
|
|
}
|
|
|
|
static ssize_t inject_data_error_show(struct device *dev,
|
|
struct device_attribute *mattr,
|
|
char *data)
|
|
{
|
|
struct mem_ctl_info *mci = to_mci(dev);
|
|
struct synps_edac_priv *priv = mci->pvt_info;
|
|
|
|
return sprintf(data, "Poison0 Addr: 0x%08x\n\rPoison1 Addr: 0x%08x\n\r"
|
|
"Error injection Address: 0x%lx\n\r",
|
|
readl(priv->baseaddr + ECC_POISON0_OFST),
|
|
readl(priv->baseaddr + ECC_POISON1_OFST),
|
|
priv->poison_addr);
|
|
}
|
|
|
|
static ssize_t inject_data_error_store(struct device *dev,
|
|
struct device_attribute *mattr,
|
|
const char *data, size_t count)
|
|
{
|
|
struct mem_ctl_info *mci = to_mci(dev);
|
|
struct synps_edac_priv *priv = mci->pvt_info;
|
|
|
|
if (kstrtoul(data, 0, &priv->poison_addr))
|
|
return -EINVAL;
|
|
|
|
ddr_poison_setup(priv);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t inject_data_poison_show(struct device *dev,
|
|
struct device_attribute *mattr,
|
|
char *data)
|
|
{
|
|
struct mem_ctl_info *mci = to_mci(dev);
|
|
struct synps_edac_priv *priv = mci->pvt_info;
|
|
|
|
return sprintf(data, "Data Poisoning: %s\n\r",
|
|
(((readl(priv->baseaddr + ECC_CFG1_OFST)) & 0x3) == 0x3)
|
|
? ("Correctable Error") : ("UnCorrectable Error"));
|
|
}
|
|
|
|
static ssize_t inject_data_poison_store(struct device *dev,
|
|
struct device_attribute *mattr,
|
|
const char *data, size_t count)
|
|
{
|
|
struct mem_ctl_info *mci = to_mci(dev);
|
|
struct synps_edac_priv *priv = mci->pvt_info;
|
|
|
|
writel(0, priv->baseaddr + DDRC_SWCTL);
|
|
if (strncmp(data, "CE", 2) == 0)
|
|
writel(ECC_CEPOISON_MASK, priv->baseaddr + ECC_CFG1_OFST);
|
|
else
|
|
writel(ECC_UEPOISON_MASK, priv->baseaddr + ECC_CFG1_OFST);
|
|
writel(1, priv->baseaddr + DDRC_SWCTL);
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR_RW(inject_data_error);
|
|
static DEVICE_ATTR_RW(inject_data_poison);
|
|
|
|
static int edac_create_sysfs_attributes(struct mem_ctl_info *mci)
|
|
{
|
|
int rc;
|
|
|
|
rc = device_create_file(&mci->dev, &dev_attr_inject_data_error);
|
|
if (rc < 0)
|
|
return rc;
|
|
rc = device_create_file(&mci->dev, &dev_attr_inject_data_poison);
|
|
if (rc < 0)
|
|
return rc;
|
|
return 0;
|
|
}
|
|
|
|
static void edac_remove_sysfs_attributes(struct mem_ctl_info *mci)
|
|
{
|
|
device_remove_file(&mci->dev, &dev_attr_inject_data_error);
|
|
device_remove_file(&mci->dev, &dev_attr_inject_data_poison);
|
|
}
|
|
|
|
static void setup_row_address_map(struct synps_edac_priv *priv, u32 *addrmap)
|
|
{
|
|
u32 addrmap_row_b2_10;
|
|
int index;
|
|
|
|
priv->row_shift[0] = (addrmap[5] & ROW_MAX_VAL_MASK) + ROW_B0_BASE;
|
|
priv->row_shift[1] = ((addrmap[5] >> 8) &
|
|
ROW_MAX_VAL_MASK) + ROW_B1_BASE;
|
|
|
|
addrmap_row_b2_10 = (addrmap[5] >> 16) & ROW_MAX_VAL_MASK;
|
|
if (addrmap_row_b2_10 != ROW_MAX_VAL_MASK) {
|
|
for (index = 2; index < 11; index++)
|
|
priv->row_shift[index] = addrmap_row_b2_10 +
|
|
index + ROW_B0_BASE;
|
|
|
|
} else {
|
|
priv->row_shift[2] = (addrmap[9] &
|
|
ROW_MAX_VAL_MASK) + ROW_B2_BASE;
|
|
priv->row_shift[3] = ((addrmap[9] >> 8) &
|
|
ROW_MAX_VAL_MASK) + ROW_B3_BASE;
|
|
priv->row_shift[4] = ((addrmap[9] >> 16) &
|
|
ROW_MAX_VAL_MASK) + ROW_B4_BASE;
|
|
priv->row_shift[5] = ((addrmap[9] >> 24) &
|
|
ROW_MAX_VAL_MASK) + ROW_B5_BASE;
|
|
priv->row_shift[6] = (addrmap[10] &
|
|
ROW_MAX_VAL_MASK) + ROW_B6_BASE;
|
|
priv->row_shift[7] = ((addrmap[10] >> 8) &
|
|
ROW_MAX_VAL_MASK) + ROW_B7_BASE;
|
|
priv->row_shift[8] = ((addrmap[10] >> 16) &
|
|
ROW_MAX_VAL_MASK) + ROW_B8_BASE;
|
|
priv->row_shift[9] = ((addrmap[10] >> 24) &
|
|
ROW_MAX_VAL_MASK) + ROW_B9_BASE;
|
|
priv->row_shift[10] = (addrmap[11] &
|
|
ROW_MAX_VAL_MASK) + ROW_B10_BASE;
|
|
}
|
|
|
|
priv->row_shift[11] = (((addrmap[5] >> 24) & ROW_MAX_VAL_MASK) ==
|
|
ROW_MAX_VAL_MASK) ? 0 : (((addrmap[5] >> 24) &
|
|
ROW_MAX_VAL_MASK) + ROW_B11_BASE);
|
|
priv->row_shift[12] = ((addrmap[6] & ROW_MAX_VAL_MASK) ==
|
|
ROW_MAX_VAL_MASK) ? 0 : ((addrmap[6] &
|
|
ROW_MAX_VAL_MASK) + ROW_B12_BASE);
|
|
priv->row_shift[13] = (((addrmap[6] >> 8) & ROW_MAX_VAL_MASK) ==
|
|
ROW_MAX_VAL_MASK) ? 0 : (((addrmap[6] >> 8) &
|
|
ROW_MAX_VAL_MASK) + ROW_B13_BASE);
|
|
priv->row_shift[14] = (((addrmap[6] >> 16) & ROW_MAX_VAL_MASK) ==
|
|
ROW_MAX_VAL_MASK) ? 0 : (((addrmap[6] >> 16) &
|
|
ROW_MAX_VAL_MASK) + ROW_B14_BASE);
|
|
priv->row_shift[15] = (((addrmap[6] >> 24) & ROW_MAX_VAL_MASK) ==
|
|
ROW_MAX_VAL_MASK) ? 0 : (((addrmap[6] >> 24) &
|
|
ROW_MAX_VAL_MASK) + ROW_B15_BASE);
|
|
priv->row_shift[16] = ((addrmap[7] & ROW_MAX_VAL_MASK) ==
|
|
ROW_MAX_VAL_MASK) ? 0 : ((addrmap[7] &
|
|
ROW_MAX_VAL_MASK) + ROW_B16_BASE);
|
|
priv->row_shift[17] = (((addrmap[7] >> 8) & ROW_MAX_VAL_MASK) ==
|
|
ROW_MAX_VAL_MASK) ? 0 : (((addrmap[7] >> 8) &
|
|
ROW_MAX_VAL_MASK) + ROW_B17_BASE);
|
|
}
|
|
|
|
static void setup_column_address_map(struct synps_edac_priv *priv, u32 *addrmap)
|
|
{
|
|
u32 width, memtype;
|
|
int index;
|
|
|
|
memtype = readl(priv->baseaddr + CTRL_OFST);
|
|
width = (memtype & ECC_CTRL_BUSWIDTH_MASK) >> ECC_CTRL_BUSWIDTH_SHIFT;
|
|
|
|
priv->col_shift[0] = 0;
|
|
priv->col_shift[1] = 1;
|
|
priv->col_shift[2] = (addrmap[2] & COL_MAX_VAL_MASK) + COL_B2_BASE;
|
|
priv->col_shift[3] = ((addrmap[2] >> 8) &
|
|
COL_MAX_VAL_MASK) + COL_B3_BASE;
|
|
priv->col_shift[4] = (((addrmap[2] >> 16) & COL_MAX_VAL_MASK) ==
|
|
COL_MAX_VAL_MASK) ? 0 : (((addrmap[2] >> 16) &
|
|
COL_MAX_VAL_MASK) + COL_B4_BASE);
|
|
priv->col_shift[5] = (((addrmap[2] >> 24) & COL_MAX_VAL_MASK) ==
|
|
COL_MAX_VAL_MASK) ? 0 : (((addrmap[2] >> 24) &
|
|
COL_MAX_VAL_MASK) + COL_B5_BASE);
|
|
priv->col_shift[6] = ((addrmap[3] & COL_MAX_VAL_MASK) ==
|
|
COL_MAX_VAL_MASK) ? 0 : ((addrmap[3] &
|
|
COL_MAX_VAL_MASK) + COL_B6_BASE);
|
|
priv->col_shift[7] = (((addrmap[3] >> 8) & COL_MAX_VAL_MASK) ==
|
|
COL_MAX_VAL_MASK) ? 0 : (((addrmap[3] >> 8) &
|
|
COL_MAX_VAL_MASK) + COL_B7_BASE);
|
|
priv->col_shift[8] = (((addrmap[3] >> 16) & COL_MAX_VAL_MASK) ==
|
|
COL_MAX_VAL_MASK) ? 0 : (((addrmap[3] >> 16) &
|
|
COL_MAX_VAL_MASK) + COL_B8_BASE);
|
|
priv->col_shift[9] = (((addrmap[3] >> 24) & COL_MAX_VAL_MASK) ==
|
|
COL_MAX_VAL_MASK) ? 0 : (((addrmap[3] >> 24) &
|
|
COL_MAX_VAL_MASK) + COL_B9_BASE);
|
|
if (width == DDRCTL_EWDTH_64) {
|
|
if (memtype & MEM_TYPE_LPDDR3) {
|
|
priv->col_shift[10] = ((addrmap[4] &
|
|
COL_MAX_VAL_MASK) == COL_MAX_VAL_MASK) ? 0 :
|
|
((addrmap[4] & COL_MAX_VAL_MASK) +
|
|
COL_B10_BASE);
|
|
priv->col_shift[11] = (((addrmap[4] >> 8) &
|
|
COL_MAX_VAL_MASK) == COL_MAX_VAL_MASK) ? 0 :
|
|
(((addrmap[4] >> 8) & COL_MAX_VAL_MASK) +
|
|
COL_B11_BASE);
|
|
} else {
|
|
priv->col_shift[11] = ((addrmap[4] &
|
|
COL_MAX_VAL_MASK) == COL_MAX_VAL_MASK) ? 0 :
|
|
((addrmap[4] & COL_MAX_VAL_MASK) +
|
|
COL_B10_BASE);
|
|
priv->col_shift[13] = (((addrmap[4] >> 8) &
|
|
COL_MAX_VAL_MASK) == COL_MAX_VAL_MASK) ? 0 :
|
|
(((addrmap[4] >> 8) & COL_MAX_VAL_MASK) +
|
|
COL_B11_BASE);
|
|
}
|
|
} else if (width == DDRCTL_EWDTH_32) {
|
|
if (memtype & MEM_TYPE_LPDDR3) {
|
|
priv->col_shift[10] = (((addrmap[3] >> 24) &
|
|
COL_MAX_VAL_MASK) == COL_MAX_VAL_MASK) ? 0 :
|
|
(((addrmap[3] >> 24) & COL_MAX_VAL_MASK) +
|
|
COL_B9_BASE);
|
|
priv->col_shift[11] = ((addrmap[4] &
|
|
COL_MAX_VAL_MASK) == COL_MAX_VAL_MASK) ? 0 :
|
|
((addrmap[4] & COL_MAX_VAL_MASK) +
|
|
COL_B10_BASE);
|
|
} else {
|
|
priv->col_shift[11] = (((addrmap[3] >> 24) &
|
|
COL_MAX_VAL_MASK) == COL_MAX_VAL_MASK) ? 0 :
|
|
(((addrmap[3] >> 24) & COL_MAX_VAL_MASK) +
|
|
COL_B9_BASE);
|
|
priv->col_shift[13] = ((addrmap[4] &
|
|
COL_MAX_VAL_MASK) == COL_MAX_VAL_MASK) ? 0 :
|
|
((addrmap[4] & COL_MAX_VAL_MASK) +
|
|
COL_B10_BASE);
|
|
}
|
|
} else {
|
|
if (memtype & MEM_TYPE_LPDDR3) {
|
|
priv->col_shift[10] = (((addrmap[3] >> 16) &
|
|
COL_MAX_VAL_MASK) == COL_MAX_VAL_MASK) ? 0 :
|
|
(((addrmap[3] >> 16) & COL_MAX_VAL_MASK) +
|
|
COL_B8_BASE);
|
|
priv->col_shift[11] = (((addrmap[3] >> 24) &
|
|
COL_MAX_VAL_MASK) == COL_MAX_VAL_MASK) ? 0 :
|
|
(((addrmap[3] >> 24) & COL_MAX_VAL_MASK) +
|
|
COL_B9_BASE);
|
|
priv->col_shift[13] = ((addrmap[4] &
|
|
COL_MAX_VAL_MASK) == COL_MAX_VAL_MASK) ? 0 :
|
|
((addrmap[4] & COL_MAX_VAL_MASK) +
|
|
COL_B10_BASE);
|
|
} else {
|
|
priv->col_shift[11] = (((addrmap[3] >> 16) &
|
|
COL_MAX_VAL_MASK) == COL_MAX_VAL_MASK) ? 0 :
|
|
(((addrmap[3] >> 16) & COL_MAX_VAL_MASK) +
|
|
COL_B8_BASE);
|
|
priv->col_shift[13] = (((addrmap[3] >> 24) &
|
|
COL_MAX_VAL_MASK) == COL_MAX_VAL_MASK) ? 0 :
|
|
(((addrmap[3] >> 24) & COL_MAX_VAL_MASK) +
|
|
COL_B9_BASE);
|
|
}
|
|
}
|
|
|
|
if (width) {
|
|
for (index = 9; index > width; index--) {
|
|
priv->col_shift[index] = priv->col_shift[index - width];
|
|
priv->col_shift[index - width] = 0;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
static void setup_bank_address_map(struct synps_edac_priv *priv, u32 *addrmap)
|
|
{
|
|
priv->bank_shift[0] = (addrmap[1] & BANK_MAX_VAL_MASK) + BANK_B0_BASE;
|
|
priv->bank_shift[1] = ((addrmap[1] >> 8) &
|
|
BANK_MAX_VAL_MASK) + BANK_B1_BASE;
|
|
priv->bank_shift[2] = (((addrmap[1] >> 16) &
|
|
BANK_MAX_VAL_MASK) == BANK_MAX_VAL_MASK) ? 0 :
|
|
(((addrmap[1] >> 16) & BANK_MAX_VAL_MASK) +
|
|
BANK_B2_BASE);
|
|
|
|
}
|
|
|
|
static void setup_bg_address_map(struct synps_edac_priv *priv, u32 *addrmap)
|
|
{
|
|
priv->bankgrp_shift[0] = (addrmap[8] &
|
|
BANKGRP_MAX_VAL_MASK) + BANKGRP_B0_BASE;
|
|
priv->bankgrp_shift[1] = (((addrmap[8] >> 8) & BANKGRP_MAX_VAL_MASK) ==
|
|
BANKGRP_MAX_VAL_MASK) ? 0 : (((addrmap[8] >> 8)
|
|
& BANKGRP_MAX_VAL_MASK) + BANKGRP_B1_BASE);
|
|
|
|
}
|
|
|
|
static void setup_rank_address_map(struct synps_edac_priv *priv, u32 *addrmap)
|
|
{
|
|
priv->rank_shift[0] = ((addrmap[0] & RANK_MAX_VAL_MASK) ==
|
|
RANK_MAX_VAL_MASK) ? 0 : ((addrmap[0] &
|
|
RANK_MAX_VAL_MASK) + RANK_B0_BASE);
|
|
}
|
|
|
|
/**
|
|
* setup_address_map - Set Address Map by querying ADDRMAP registers.
|
|
* @priv: DDR memory controller private instance data.
|
|
*
|
|
* Set Address Map by querying ADDRMAP registers.
|
|
*
|
|
* Return: none.
|
|
*/
|
|
static void setup_address_map(struct synps_edac_priv *priv)
|
|
{
|
|
u32 addrmap[12];
|
|
int index;
|
|
|
|
for (index = 0; index < 12; index++) {
|
|
u32 addrmap_offset;
|
|
|
|
addrmap_offset = ECC_ADDRMAP0_OFFSET + (index * 4);
|
|
addrmap[index] = readl(priv->baseaddr + addrmap_offset);
|
|
}
|
|
|
|
setup_row_address_map(priv, addrmap);
|
|
|
|
setup_column_address_map(priv, addrmap);
|
|
|
|
setup_bank_address_map(priv, addrmap);
|
|
|
|
setup_bg_address_map(priv, addrmap);
|
|
|
|
setup_rank_address_map(priv, addrmap);
|
|
}
|
|
#endif /* CONFIG_EDAC_DEBUG */
|
|
|
|
/**
|
|
* mc_probe - Check controller and bind driver.
|
|
* @pdev: platform device.
|
|
*
|
|
* Probe a specific controller instance for binding with the driver.
|
|
*
|
|
* Return: 0 if the controller instance was successfully bound to the
|
|
* driver; otherwise, < 0 on error.
|
|
*/
|
|
static int mc_probe(struct platform_device *pdev)
|
|
{
|
|
const struct synps_platform_data *p_data;
|
|
struct edac_mc_layer layers[2];
|
|
struct synps_edac_priv *priv;
|
|
struct mem_ctl_info *mci;
|
|
void __iomem *baseaddr;
|
|
struct resource *res;
|
|
int rc;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
baseaddr = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(baseaddr))
|
|
return PTR_ERR(baseaddr);
|
|
|
|
p_data = of_device_get_match_data(&pdev->dev);
|
|
if (!p_data)
|
|
return -ENODEV;
|
|
|
|
if (!p_data->get_ecc_state(baseaddr)) {
|
|
edac_printk(KERN_INFO, EDAC_MC, "ECC not enabled\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
|
|
layers[0].size = SYNPS_EDAC_NR_CSROWS;
|
|
layers[0].is_virt_csrow = true;
|
|
layers[1].type = EDAC_MC_LAYER_CHANNEL;
|
|
layers[1].size = SYNPS_EDAC_NR_CHANS;
|
|
layers[1].is_virt_csrow = false;
|
|
|
|
mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers,
|
|
sizeof(struct synps_edac_priv));
|
|
if (!mci) {
|
|
edac_printk(KERN_ERR, EDAC_MC,
|
|
"Failed memory allocation for mc instance\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
priv = mci->pvt_info;
|
|
priv->baseaddr = baseaddr;
|
|
priv->p_data = p_data;
|
|
|
|
mc_init(mci, pdev);
|
|
|
|
if (priv->p_data->quirks & DDR_ECC_INTR_SUPPORT) {
|
|
rc = setup_irq(mci, pdev);
|
|
if (rc)
|
|
goto free_edac_mc;
|
|
}
|
|
|
|
rc = edac_mc_add_mc(mci);
|
|
if (rc) {
|
|
edac_printk(KERN_ERR, EDAC_MC,
|
|
"Failed to register with EDAC core\n");
|
|
goto free_edac_mc;
|
|
}
|
|
|
|
#ifdef CONFIG_EDAC_DEBUG
|
|
if (priv->p_data->quirks & DDR_ECC_DATA_POISON_SUPPORT) {
|
|
rc = edac_create_sysfs_attributes(mci);
|
|
if (rc) {
|
|
edac_printk(KERN_ERR, EDAC_MC,
|
|
"Failed to create sysfs entries\n");
|
|
goto free_edac_mc;
|
|
}
|
|
}
|
|
|
|
if (priv->p_data->quirks & DDR_ECC_INTR_SUPPORT)
|
|
setup_address_map(priv);
|
|
#endif
|
|
|
|
/*
|
|
* Start capturing the correctable and uncorrectable errors. A write of
|
|
* 0 starts the counters.
|
|
*/
|
|
if (!(priv->p_data->quirks & DDR_ECC_INTR_SUPPORT))
|
|
writel(0x0, baseaddr + ECC_CTRL_OFST);
|
|
|
|
return rc;
|
|
|
|
free_edac_mc:
|
|
edac_mc_free(mci);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* mc_remove - Unbind driver from controller.
|
|
* @pdev: Platform device.
|
|
*
|
|
* Return: Unconditionally 0
|
|
*/
|
|
static int mc_remove(struct platform_device *pdev)
|
|
{
|
|
struct mem_ctl_info *mci = platform_get_drvdata(pdev);
|
|
struct synps_edac_priv *priv = mci->pvt_info;
|
|
|
|
if (priv->p_data->quirks & DDR_ECC_INTR_SUPPORT)
|
|
disable_intr(priv);
|
|
|
|
#ifdef CONFIG_EDAC_DEBUG
|
|
if (priv->p_data->quirks & DDR_ECC_DATA_POISON_SUPPORT)
|
|
edac_remove_sysfs_attributes(mci);
|
|
#endif
|
|
|
|
edac_mc_del_mc(&pdev->dev);
|
|
edac_mc_free(mci);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver synps_edac_mc_driver = {
|
|
.driver = {
|
|
.name = "synopsys-edac",
|
|
.of_match_table = synps_edac_match,
|
|
},
|
|
.probe = mc_probe,
|
|
.remove = mc_remove,
|
|
};
|
|
|
|
module_platform_driver(synps_edac_mc_driver);
|
|
|
|
MODULE_AUTHOR("Xilinx Inc");
|
|
MODULE_DESCRIPTION("Synopsys DDR ECC driver");
|
|
MODULE_LICENSE("GPL v2");
|