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![Nick Alcock](/assets/img/avatar_default.png)
Since
8b41fc4454
("kbuild: create modules.builtin without Makefile.modbuiltin or tristate.conf"),
MODULE_LICENSE declarations are used to identify modules. As
a consequence, uses of the macro in non-modules will cause modprobe to
misidentify their containing object file as a module when it is not
(false positives), and modprobe might succeed rather than failing with
a suitable error message.
altera_edac is not a module for a while now, remove the macro call.
Suggested-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Nick Alcock <nick.alcock@oracle.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230217141059.392471-24-nick.alcock@oracle.com
2227 lines
61 KiB
C
2227 lines
61 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2017-2018, Intel Corporation. All rights reserved
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* Copyright Altera Corporation (C) 2014-2016. All rights reserved.
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* Copyright 2011-2012 Calxeda, Inc.
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*/
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#include <asm/cacheflush.h>
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#include <linux/ctype.h>
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#include <linux/delay.h>
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#include <linux/edac.h>
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#include <linux/firmware/intel/stratix10-smc.h>
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#include <linux/genalloc.h>
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#include <linux/interrupt.h>
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#include <linux/irqchip/chained_irq.h>
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#include <linux/kernel.h>
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#include <linux/mfd/altera-sysmgr.h>
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#include <linux/mfd/syscon.h>
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#include <linux/notifier.h>
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#include <linux/of_address.h>
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#include <linux/of_irq.h>
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#include <linux/of_platform.h>
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#include <linux/panic_notifier.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/types.h>
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#include <linux/uaccess.h>
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#include "altera_edac.h"
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#include "edac_module.h"
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#define EDAC_MOD_STR "altera_edac"
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#define EDAC_DEVICE "Altera"
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#ifdef CONFIG_EDAC_ALTERA_SDRAM
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static const struct altr_sdram_prv_data c5_data = {
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.ecc_ctrl_offset = CV_CTLCFG_OFST,
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.ecc_ctl_en_mask = CV_CTLCFG_ECC_AUTO_EN,
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.ecc_stat_offset = CV_DRAMSTS_OFST,
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.ecc_stat_ce_mask = CV_DRAMSTS_SBEERR,
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.ecc_stat_ue_mask = CV_DRAMSTS_DBEERR,
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.ecc_saddr_offset = CV_ERRADDR_OFST,
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.ecc_daddr_offset = CV_ERRADDR_OFST,
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.ecc_cecnt_offset = CV_SBECOUNT_OFST,
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.ecc_uecnt_offset = CV_DBECOUNT_OFST,
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.ecc_irq_en_offset = CV_DRAMINTR_OFST,
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.ecc_irq_en_mask = CV_DRAMINTR_INTREN,
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.ecc_irq_clr_offset = CV_DRAMINTR_OFST,
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.ecc_irq_clr_mask = (CV_DRAMINTR_INTRCLR | CV_DRAMINTR_INTREN),
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.ecc_cnt_rst_offset = CV_DRAMINTR_OFST,
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.ecc_cnt_rst_mask = CV_DRAMINTR_INTRCLR,
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.ce_ue_trgr_offset = CV_CTLCFG_OFST,
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.ce_set_mask = CV_CTLCFG_GEN_SB_ERR,
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.ue_set_mask = CV_CTLCFG_GEN_DB_ERR,
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};
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static const struct altr_sdram_prv_data a10_data = {
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.ecc_ctrl_offset = A10_ECCCTRL1_OFST,
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.ecc_ctl_en_mask = A10_ECCCTRL1_ECC_EN,
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.ecc_stat_offset = A10_INTSTAT_OFST,
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.ecc_stat_ce_mask = A10_INTSTAT_SBEERR,
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.ecc_stat_ue_mask = A10_INTSTAT_DBEERR,
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.ecc_saddr_offset = A10_SERRADDR_OFST,
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.ecc_daddr_offset = A10_DERRADDR_OFST,
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.ecc_irq_en_offset = A10_ERRINTEN_OFST,
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.ecc_irq_en_mask = A10_ECC_IRQ_EN_MASK,
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.ecc_irq_clr_offset = A10_INTSTAT_OFST,
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.ecc_irq_clr_mask = (A10_INTSTAT_SBEERR | A10_INTSTAT_DBEERR),
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.ecc_cnt_rst_offset = A10_ECCCTRL1_OFST,
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.ecc_cnt_rst_mask = A10_ECC_CNT_RESET_MASK,
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.ce_ue_trgr_offset = A10_DIAGINTTEST_OFST,
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.ce_set_mask = A10_DIAGINT_TSERRA_MASK,
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.ue_set_mask = A10_DIAGINT_TDERRA_MASK,
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};
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/*********************** EDAC Memory Controller Functions ****************/
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/* The SDRAM controller uses the EDAC Memory Controller framework. */
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static irqreturn_t altr_sdram_mc_err_handler(int irq, void *dev_id)
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{
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struct mem_ctl_info *mci = dev_id;
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struct altr_sdram_mc_data *drvdata = mci->pvt_info;
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const struct altr_sdram_prv_data *priv = drvdata->data;
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u32 status, err_count = 1, err_addr;
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regmap_read(drvdata->mc_vbase, priv->ecc_stat_offset, &status);
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if (status & priv->ecc_stat_ue_mask) {
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regmap_read(drvdata->mc_vbase, priv->ecc_daddr_offset,
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&err_addr);
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if (priv->ecc_uecnt_offset)
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regmap_read(drvdata->mc_vbase, priv->ecc_uecnt_offset,
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&err_count);
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panic("\nEDAC: [%d Uncorrectable errors @ 0x%08X]\n",
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err_count, err_addr);
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}
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if (status & priv->ecc_stat_ce_mask) {
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regmap_read(drvdata->mc_vbase, priv->ecc_saddr_offset,
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&err_addr);
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if (priv->ecc_uecnt_offset)
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regmap_read(drvdata->mc_vbase, priv->ecc_cecnt_offset,
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&err_count);
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edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, err_count,
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err_addr >> PAGE_SHIFT,
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err_addr & ~PAGE_MASK, 0,
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0, 0, -1, mci->ctl_name, "");
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/* Clear IRQ to resume */
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regmap_write(drvdata->mc_vbase, priv->ecc_irq_clr_offset,
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priv->ecc_irq_clr_mask);
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return IRQ_HANDLED;
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}
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return IRQ_NONE;
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}
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static ssize_t altr_sdr_mc_err_inject_write(struct file *file,
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const char __user *data,
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size_t count, loff_t *ppos)
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{
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struct mem_ctl_info *mci = file->private_data;
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struct altr_sdram_mc_data *drvdata = mci->pvt_info;
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const struct altr_sdram_prv_data *priv = drvdata->data;
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u32 *ptemp;
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dma_addr_t dma_handle;
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u32 reg, read_reg;
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ptemp = dma_alloc_coherent(mci->pdev, 16, &dma_handle, GFP_KERNEL);
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if (!ptemp) {
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dma_free_coherent(mci->pdev, 16, ptemp, dma_handle);
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edac_printk(KERN_ERR, EDAC_MC,
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"Inject: Buffer Allocation error\n");
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return -ENOMEM;
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}
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regmap_read(drvdata->mc_vbase, priv->ce_ue_trgr_offset,
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&read_reg);
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read_reg &= ~(priv->ce_set_mask | priv->ue_set_mask);
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/* Error are injected by writing a word while the SBE or DBE
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* bit in the CTLCFG register is set. Reading the word will
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* trigger the SBE or DBE error and the corresponding IRQ.
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*/
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if (count == 3) {
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edac_printk(KERN_ALERT, EDAC_MC,
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"Inject Double bit error\n");
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local_irq_disable();
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regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset,
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(read_reg | priv->ue_set_mask));
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local_irq_enable();
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} else {
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edac_printk(KERN_ALERT, EDAC_MC,
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"Inject Single bit error\n");
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local_irq_disable();
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regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset,
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(read_reg | priv->ce_set_mask));
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local_irq_enable();
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}
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ptemp[0] = 0x5A5A5A5A;
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ptemp[1] = 0xA5A5A5A5;
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/* Clear the error injection bits */
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regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset, read_reg);
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/* Ensure it has been written out */
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wmb();
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/*
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* To trigger the error, we need to read the data back
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* (the data was written with errors above).
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* The READ_ONCE macros and printk are used to prevent the
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* the compiler optimizing these reads out.
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*/
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reg = READ_ONCE(ptemp[0]);
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read_reg = READ_ONCE(ptemp[1]);
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/* Force Read */
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rmb();
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edac_printk(KERN_ALERT, EDAC_MC, "Read Data [0x%X, 0x%X]\n",
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reg, read_reg);
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dma_free_coherent(mci->pdev, 16, ptemp, dma_handle);
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return count;
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}
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static const struct file_operations altr_sdr_mc_debug_inject_fops = {
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.open = simple_open,
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.write = altr_sdr_mc_err_inject_write,
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.llseek = generic_file_llseek,
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};
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static void altr_sdr_mc_create_debugfs_nodes(struct mem_ctl_info *mci)
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{
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if (!IS_ENABLED(CONFIG_EDAC_DEBUG))
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return;
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if (!mci->debugfs)
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return;
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edac_debugfs_create_file("altr_trigger", S_IWUSR, mci->debugfs, mci,
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&altr_sdr_mc_debug_inject_fops);
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}
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/* Get total memory size from Open Firmware DTB */
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static unsigned long get_total_mem(void)
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{
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struct device_node *np = NULL;
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struct resource res;
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int ret;
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unsigned long total_mem = 0;
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for_each_node_by_type(np, "memory") {
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ret = of_address_to_resource(np, 0, &res);
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if (ret)
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continue;
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total_mem += resource_size(&res);
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}
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edac_dbg(0, "total_mem 0x%lx\n", total_mem);
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return total_mem;
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}
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static const struct of_device_id altr_sdram_ctrl_of_match[] = {
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{ .compatible = "altr,sdram-edac", .data = &c5_data},
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{ .compatible = "altr,sdram-edac-a10", .data = &a10_data},
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{},
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};
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MODULE_DEVICE_TABLE(of, altr_sdram_ctrl_of_match);
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static int a10_init(struct regmap *mc_vbase)
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{
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if (regmap_update_bits(mc_vbase, A10_INTMODE_OFST,
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A10_INTMODE_SB_INT, A10_INTMODE_SB_INT)) {
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edac_printk(KERN_ERR, EDAC_MC,
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"Error setting SB IRQ mode\n");
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return -ENODEV;
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}
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if (regmap_write(mc_vbase, A10_SERRCNTREG_OFST, 1)) {
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edac_printk(KERN_ERR, EDAC_MC,
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"Error setting trigger count\n");
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return -ENODEV;
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}
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return 0;
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}
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static int a10_unmask_irq(struct platform_device *pdev, u32 mask)
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{
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void __iomem *sm_base;
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int ret = 0;
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if (!request_mem_region(A10_SYMAN_INTMASK_CLR, sizeof(u32),
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dev_name(&pdev->dev))) {
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edac_printk(KERN_ERR, EDAC_MC,
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"Unable to request mem region\n");
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return -EBUSY;
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}
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sm_base = ioremap(A10_SYMAN_INTMASK_CLR, sizeof(u32));
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if (!sm_base) {
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edac_printk(KERN_ERR, EDAC_MC,
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"Unable to ioremap device\n");
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ret = -ENOMEM;
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goto release;
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}
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iowrite32(mask, sm_base);
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iounmap(sm_base);
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release:
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release_mem_region(A10_SYMAN_INTMASK_CLR, sizeof(u32));
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return ret;
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}
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static int altr_sdram_probe(struct platform_device *pdev)
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{
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const struct of_device_id *id;
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struct edac_mc_layer layers[2];
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struct mem_ctl_info *mci;
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struct altr_sdram_mc_data *drvdata;
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const struct altr_sdram_prv_data *priv;
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struct regmap *mc_vbase;
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struct dimm_info *dimm;
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u32 read_reg;
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int irq, irq2, res = 0;
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unsigned long mem_size, irqflags = 0;
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id = of_match_device(altr_sdram_ctrl_of_match, &pdev->dev);
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if (!id)
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return -ENODEV;
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/* Grab the register range from the sdr controller in device tree */
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mc_vbase = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
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"altr,sdr-syscon");
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if (IS_ERR(mc_vbase)) {
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edac_printk(KERN_ERR, EDAC_MC,
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"regmap for altr,sdr-syscon lookup failed.\n");
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return -ENODEV;
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}
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/* Check specific dependencies for the module */
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priv = of_match_node(altr_sdram_ctrl_of_match,
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pdev->dev.of_node)->data;
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/* Validate the SDRAM controller has ECC enabled */
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if (regmap_read(mc_vbase, priv->ecc_ctrl_offset, &read_reg) ||
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((read_reg & priv->ecc_ctl_en_mask) != priv->ecc_ctl_en_mask)) {
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edac_printk(KERN_ERR, EDAC_MC,
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"No ECC/ECC disabled [0x%08X]\n", read_reg);
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return -ENODEV;
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}
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/* Grab memory size from device tree. */
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mem_size = get_total_mem();
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if (!mem_size) {
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edac_printk(KERN_ERR, EDAC_MC, "Unable to calculate memory size\n");
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return -ENODEV;
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}
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/* Ensure the SDRAM Interrupt is disabled */
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if (regmap_update_bits(mc_vbase, priv->ecc_irq_en_offset,
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priv->ecc_irq_en_mask, 0)) {
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edac_printk(KERN_ERR, EDAC_MC,
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"Error disabling SDRAM ECC IRQ\n");
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return -ENODEV;
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}
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/* Toggle to clear the SDRAM Error count */
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if (regmap_update_bits(mc_vbase, priv->ecc_cnt_rst_offset,
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priv->ecc_cnt_rst_mask,
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priv->ecc_cnt_rst_mask)) {
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edac_printk(KERN_ERR, EDAC_MC,
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"Error clearing SDRAM ECC count\n");
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return -ENODEV;
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}
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if (regmap_update_bits(mc_vbase, priv->ecc_cnt_rst_offset,
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priv->ecc_cnt_rst_mask, 0)) {
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edac_printk(KERN_ERR, EDAC_MC,
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"Error clearing SDRAM ECC count\n");
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return -ENODEV;
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}
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irq = platform_get_irq(pdev, 0);
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if (irq < 0) {
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edac_printk(KERN_ERR, EDAC_MC,
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"No irq %d in DT\n", irq);
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return irq;
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}
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/* Arria10 has a 2nd IRQ */
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irq2 = platform_get_irq(pdev, 1);
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layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
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layers[0].size = 1;
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layers[0].is_virt_csrow = true;
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layers[1].type = EDAC_MC_LAYER_CHANNEL;
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layers[1].size = 1;
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layers[1].is_virt_csrow = false;
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mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers,
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sizeof(struct altr_sdram_mc_data));
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if (!mci)
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return -ENOMEM;
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mci->pdev = &pdev->dev;
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drvdata = mci->pvt_info;
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drvdata->mc_vbase = mc_vbase;
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drvdata->data = priv;
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platform_set_drvdata(pdev, mci);
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if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
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edac_printk(KERN_ERR, EDAC_MC,
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"Unable to get managed device resource\n");
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res = -ENOMEM;
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goto free;
|
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}
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|
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mci->mtype_cap = MEM_FLAG_DDR3;
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mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;
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mci->edac_cap = EDAC_FLAG_SECDED;
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mci->mod_name = EDAC_MOD_STR;
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mci->ctl_name = dev_name(&pdev->dev);
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mci->scrub_mode = SCRUB_SW_SRC;
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mci->dev_name = dev_name(&pdev->dev);
|
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|
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dimm = *mci->dimms;
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dimm->nr_pages = ((mem_size - 1) >> PAGE_SHIFT) + 1;
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dimm->grain = 8;
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dimm->dtype = DEV_X8;
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dimm->mtype = MEM_DDR3;
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dimm->edac_mode = EDAC_SECDED;
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|
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res = edac_mc_add_mc(mci);
|
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if (res < 0)
|
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goto err;
|
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|
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/* Only the Arria10 has separate IRQs */
|
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if (of_machine_is_compatible("altr,socfpga-arria10")) {
|
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/* Arria10 specific initialization */
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res = a10_init(mc_vbase);
|
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if (res < 0)
|
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goto err2;
|
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|
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res = devm_request_irq(&pdev->dev, irq2,
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altr_sdram_mc_err_handler,
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IRQF_SHARED, dev_name(&pdev->dev), mci);
|
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if (res < 0) {
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edac_mc_printk(mci, KERN_ERR,
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"Unable to request irq %d\n", irq2);
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res = -ENODEV;
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goto err2;
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}
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|
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res = a10_unmask_irq(pdev, A10_DDR0_IRQ_MASK);
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if (res < 0)
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goto err2;
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|
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irqflags = IRQF_SHARED;
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}
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|
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res = devm_request_irq(&pdev->dev, irq, altr_sdram_mc_err_handler,
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irqflags, dev_name(&pdev->dev), mci);
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if (res < 0) {
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edac_mc_printk(mci, KERN_ERR,
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"Unable to request irq %d\n", irq);
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res = -ENODEV;
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goto err2;
|
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}
|
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|
|
/* Infrastructure ready - enable the IRQ */
|
|
if (regmap_update_bits(drvdata->mc_vbase, priv->ecc_irq_en_offset,
|
|
priv->ecc_irq_en_mask, priv->ecc_irq_en_mask)) {
|
|
edac_mc_printk(mci, KERN_ERR,
|
|
"Error enabling SDRAM ECC IRQ\n");
|
|
res = -ENODEV;
|
|
goto err2;
|
|
}
|
|
|
|
altr_sdr_mc_create_debugfs_nodes(mci);
|
|
|
|
devres_close_group(&pdev->dev, NULL);
|
|
|
|
return 0;
|
|
|
|
err2:
|
|
edac_mc_del_mc(&pdev->dev);
|
|
err:
|
|
devres_release_group(&pdev->dev, NULL);
|
|
free:
|
|
edac_mc_free(mci);
|
|
edac_printk(KERN_ERR, EDAC_MC,
|
|
"EDAC Probe Failed; Error %d\n", res);
|
|
|
|
return res;
|
|
}
|
|
|
|
static int altr_sdram_remove(struct platform_device *pdev)
|
|
{
|
|
struct mem_ctl_info *mci = platform_get_drvdata(pdev);
|
|
|
|
edac_mc_del_mc(&pdev->dev);
|
|
edac_mc_free(mci);
|
|
platform_set_drvdata(pdev, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If you want to suspend, need to disable EDAC by removing it
|
|
* from the device tree or defconfig.
|
|
*/
|
|
#ifdef CONFIG_PM
|
|
static int altr_sdram_prepare(struct device *dev)
|
|
{
|
|
pr_err("Suspend not allowed when EDAC is enabled.\n");
|
|
|
|
return -EPERM;
|
|
}
|
|
|
|
static const struct dev_pm_ops altr_sdram_pm_ops = {
|
|
.prepare = altr_sdram_prepare,
|
|
};
|
|
#endif
|
|
|
|
static struct platform_driver altr_sdram_edac_driver = {
|
|
.probe = altr_sdram_probe,
|
|
.remove = altr_sdram_remove,
|
|
.driver = {
|
|
.name = "altr_sdram_edac",
|
|
#ifdef CONFIG_PM
|
|
.pm = &altr_sdram_pm_ops,
|
|
#endif
|
|
.of_match_table = altr_sdram_ctrl_of_match,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(altr_sdram_edac_driver);
|
|
|
|
#endif /* CONFIG_EDAC_ALTERA_SDRAM */
|
|
|
|
/************************* EDAC Parent Probe *************************/
|
|
|
|
static const struct of_device_id altr_edac_device_of_match[];
|
|
|
|
static const struct of_device_id altr_edac_of_match[] = {
|
|
{ .compatible = "altr,socfpga-ecc-manager" },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, altr_edac_of_match);
|
|
|
|
static int altr_edac_probe(struct platform_device *pdev)
|
|
{
|
|
of_platform_populate(pdev->dev.of_node, altr_edac_device_of_match,
|
|
NULL, &pdev->dev);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver altr_edac_driver = {
|
|
.probe = altr_edac_probe,
|
|
.driver = {
|
|
.name = "socfpga_ecc_manager",
|
|
.of_match_table = altr_edac_of_match,
|
|
},
|
|
};
|
|
module_platform_driver(altr_edac_driver);
|
|
|
|
/************************* EDAC Device Functions *************************/
|
|
|
|
/*
|
|
* EDAC Device Functions (shared between various IPs).
|
|
* The discrete memories use the EDAC Device framework. The probe
|
|
* and error handling functions are very similar between memories
|
|
* so they are shared. The memory allocation and freeing for EDAC
|
|
* trigger testing are different for each memory.
|
|
*/
|
|
|
|
#ifdef CONFIG_EDAC_ALTERA_OCRAM
|
|
static const struct edac_device_prv_data ocramecc_data;
|
|
#endif
|
|
#ifdef CONFIG_EDAC_ALTERA_L2C
|
|
static const struct edac_device_prv_data l2ecc_data;
|
|
#endif
|
|
#ifdef CONFIG_EDAC_ALTERA_OCRAM
|
|
static const struct edac_device_prv_data a10_ocramecc_data;
|
|
#endif
|
|
#ifdef CONFIG_EDAC_ALTERA_L2C
|
|
static const struct edac_device_prv_data a10_l2ecc_data;
|
|
#endif
|
|
|
|
static irqreturn_t altr_edac_device_handler(int irq, void *dev_id)
|
|
{
|
|
irqreturn_t ret_value = IRQ_NONE;
|
|
struct edac_device_ctl_info *dci = dev_id;
|
|
struct altr_edac_device_dev *drvdata = dci->pvt_info;
|
|
const struct edac_device_prv_data *priv = drvdata->data;
|
|
|
|
if (irq == drvdata->sb_irq) {
|
|
if (priv->ce_clear_mask)
|
|
writel(priv->ce_clear_mask, drvdata->base);
|
|
edac_device_handle_ce(dci, 0, 0, drvdata->edac_dev_name);
|
|
ret_value = IRQ_HANDLED;
|
|
} else if (irq == drvdata->db_irq) {
|
|
if (priv->ue_clear_mask)
|
|
writel(priv->ue_clear_mask, drvdata->base);
|
|
edac_device_handle_ue(dci, 0, 0, drvdata->edac_dev_name);
|
|
panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
|
|
ret_value = IRQ_HANDLED;
|
|
} else {
|
|
WARN_ON(1);
|
|
}
|
|
|
|
return ret_value;
|
|
}
|
|
|
|
static ssize_t __maybe_unused
|
|
altr_edac_device_trig(struct file *file, const char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
|
|
{
|
|
u32 *ptemp, i, error_mask;
|
|
int result = 0;
|
|
u8 trig_type;
|
|
unsigned long flags;
|
|
struct edac_device_ctl_info *edac_dci = file->private_data;
|
|
struct altr_edac_device_dev *drvdata = edac_dci->pvt_info;
|
|
const struct edac_device_prv_data *priv = drvdata->data;
|
|
void *generic_ptr = edac_dci->dev;
|
|
|
|
if (!user_buf || get_user(trig_type, user_buf))
|
|
return -EFAULT;
|
|
|
|
if (!priv->alloc_mem)
|
|
return -ENOMEM;
|
|
|
|
/*
|
|
* Note that generic_ptr is initialized to the device * but in
|
|
* some alloc_functions, this is overridden and returns data.
|
|
*/
|
|
ptemp = priv->alloc_mem(priv->trig_alloc_sz, &generic_ptr);
|
|
if (!ptemp) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"Inject: Buffer Allocation error\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (trig_type == ALTR_UE_TRIGGER_CHAR)
|
|
error_mask = priv->ue_set_mask;
|
|
else
|
|
error_mask = priv->ce_set_mask;
|
|
|
|
edac_printk(KERN_ALERT, EDAC_DEVICE,
|
|
"Trigger Error Mask (0x%X)\n", error_mask);
|
|
|
|
local_irq_save(flags);
|
|
/* write ECC corrupted data out. */
|
|
for (i = 0; i < (priv->trig_alloc_sz / sizeof(*ptemp)); i++) {
|
|
/* Read data so we're in the correct state */
|
|
rmb();
|
|
if (READ_ONCE(ptemp[i]))
|
|
result = -1;
|
|
/* Toggle Error bit (it is latched), leave ECC enabled */
|
|
writel(error_mask, (drvdata->base + priv->set_err_ofst));
|
|
writel(priv->ecc_enable_mask, (drvdata->base +
|
|
priv->set_err_ofst));
|
|
ptemp[i] = i;
|
|
}
|
|
/* Ensure it has been written out */
|
|
wmb();
|
|
local_irq_restore(flags);
|
|
|
|
if (result)
|
|
edac_printk(KERN_ERR, EDAC_DEVICE, "Mem Not Cleared\n");
|
|
|
|
/* Read out written data. ECC error caused here */
|
|
for (i = 0; i < ALTR_TRIGGER_READ_WRD_CNT; i++)
|
|
if (READ_ONCE(ptemp[i]) != i)
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"Read doesn't match written data\n");
|
|
|
|
if (priv->free_mem)
|
|
priv->free_mem(ptemp, priv->trig_alloc_sz, generic_ptr);
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations altr_edac_device_inject_fops __maybe_unused = {
|
|
.open = simple_open,
|
|
.write = altr_edac_device_trig,
|
|
.llseek = generic_file_llseek,
|
|
};
|
|
|
|
static ssize_t __maybe_unused
|
|
altr_edac_a10_device_trig(struct file *file, const char __user *user_buf,
|
|
size_t count, loff_t *ppos);
|
|
|
|
static const struct file_operations altr_edac_a10_device_inject_fops __maybe_unused = {
|
|
.open = simple_open,
|
|
.write = altr_edac_a10_device_trig,
|
|
.llseek = generic_file_llseek,
|
|
};
|
|
|
|
static ssize_t __maybe_unused
|
|
altr_edac_a10_device_trig2(struct file *file, const char __user *user_buf,
|
|
size_t count, loff_t *ppos);
|
|
|
|
static const struct file_operations altr_edac_a10_device_inject2_fops __maybe_unused = {
|
|
.open = simple_open,
|
|
.write = altr_edac_a10_device_trig2,
|
|
.llseek = generic_file_llseek,
|
|
};
|
|
|
|
static void altr_create_edacdev_dbgfs(struct edac_device_ctl_info *edac_dci,
|
|
const struct edac_device_prv_data *priv)
|
|
{
|
|
struct altr_edac_device_dev *drvdata = edac_dci->pvt_info;
|
|
|
|
if (!IS_ENABLED(CONFIG_EDAC_DEBUG))
|
|
return;
|
|
|
|
drvdata->debugfs_dir = edac_debugfs_create_dir(drvdata->edac_dev_name);
|
|
if (!drvdata->debugfs_dir)
|
|
return;
|
|
|
|
if (!edac_debugfs_create_file("altr_trigger", S_IWUSR,
|
|
drvdata->debugfs_dir, edac_dci,
|
|
priv->inject_fops))
|
|
debugfs_remove_recursive(drvdata->debugfs_dir);
|
|
}
|
|
|
|
static const struct of_device_id altr_edac_device_of_match[] = {
|
|
#ifdef CONFIG_EDAC_ALTERA_L2C
|
|
{ .compatible = "altr,socfpga-l2-ecc", .data = &l2ecc_data },
|
|
#endif
|
|
#ifdef CONFIG_EDAC_ALTERA_OCRAM
|
|
{ .compatible = "altr,socfpga-ocram-ecc", .data = &ocramecc_data },
|
|
#endif
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, altr_edac_device_of_match);
|
|
|
|
/*
|
|
* altr_edac_device_probe()
|
|
* This is a generic EDAC device driver that will support
|
|
* various Altera memory devices such as the L2 cache ECC and
|
|
* OCRAM ECC as well as the memories for other peripherals.
|
|
* Module specific initialization is done by passing the
|
|
* function index in the device tree.
|
|
*/
|
|
static int altr_edac_device_probe(struct platform_device *pdev)
|
|
{
|
|
struct edac_device_ctl_info *dci;
|
|
struct altr_edac_device_dev *drvdata;
|
|
struct resource *r;
|
|
int res = 0;
|
|
struct device_node *np = pdev->dev.of_node;
|
|
char *ecc_name = (char *)np->name;
|
|
static int dev_instance;
|
|
|
|
if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"Unable to open devm\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!r) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"Unable to get mem resource\n");
|
|
res = -ENODEV;
|
|
goto fail;
|
|
}
|
|
|
|
if (!devm_request_mem_region(&pdev->dev, r->start, resource_size(r),
|
|
dev_name(&pdev->dev))) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"%s:Error requesting mem region\n", ecc_name);
|
|
res = -EBUSY;
|
|
goto fail;
|
|
}
|
|
|
|
dci = edac_device_alloc_ctl_info(sizeof(*drvdata), ecc_name,
|
|
1, ecc_name, 1, 0, NULL, 0,
|
|
dev_instance++);
|
|
|
|
if (!dci) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"%s: Unable to allocate EDAC device\n", ecc_name);
|
|
res = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
drvdata = dci->pvt_info;
|
|
dci->dev = &pdev->dev;
|
|
platform_set_drvdata(pdev, dci);
|
|
drvdata->edac_dev_name = ecc_name;
|
|
|
|
drvdata->base = devm_ioremap(&pdev->dev, r->start, resource_size(r));
|
|
if (!drvdata->base) {
|
|
res = -ENOMEM;
|
|
goto fail1;
|
|
}
|
|
|
|
/* Get driver specific data for this EDAC device */
|
|
drvdata->data = of_match_node(altr_edac_device_of_match, np)->data;
|
|
|
|
/* Check specific dependencies for the module */
|
|
if (drvdata->data->setup) {
|
|
res = drvdata->data->setup(drvdata);
|
|
if (res)
|
|
goto fail1;
|
|
}
|
|
|
|
drvdata->sb_irq = platform_get_irq(pdev, 0);
|
|
res = devm_request_irq(&pdev->dev, drvdata->sb_irq,
|
|
altr_edac_device_handler,
|
|
0, dev_name(&pdev->dev), dci);
|
|
if (res)
|
|
goto fail1;
|
|
|
|
drvdata->db_irq = platform_get_irq(pdev, 1);
|
|
res = devm_request_irq(&pdev->dev, drvdata->db_irq,
|
|
altr_edac_device_handler,
|
|
0, dev_name(&pdev->dev), dci);
|
|
if (res)
|
|
goto fail1;
|
|
|
|
dci->mod_name = "Altera ECC Manager";
|
|
dci->dev_name = drvdata->edac_dev_name;
|
|
|
|
res = edac_device_add_device(dci);
|
|
if (res)
|
|
goto fail1;
|
|
|
|
altr_create_edacdev_dbgfs(dci, drvdata->data);
|
|
|
|
devres_close_group(&pdev->dev, NULL);
|
|
|
|
return 0;
|
|
|
|
fail1:
|
|
edac_device_free_ctl_info(dci);
|
|
fail:
|
|
devres_release_group(&pdev->dev, NULL);
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"%s:Error setting up EDAC device: %d\n", ecc_name, res);
|
|
|
|
return res;
|
|
}
|
|
|
|
static int altr_edac_device_remove(struct platform_device *pdev)
|
|
{
|
|
struct edac_device_ctl_info *dci = platform_get_drvdata(pdev);
|
|
struct altr_edac_device_dev *drvdata = dci->pvt_info;
|
|
|
|
debugfs_remove_recursive(drvdata->debugfs_dir);
|
|
edac_device_del_device(&pdev->dev);
|
|
edac_device_free_ctl_info(dci);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver altr_edac_device_driver = {
|
|
.probe = altr_edac_device_probe,
|
|
.remove = altr_edac_device_remove,
|
|
.driver = {
|
|
.name = "altr_edac_device",
|
|
.of_match_table = altr_edac_device_of_match,
|
|
},
|
|
};
|
|
module_platform_driver(altr_edac_device_driver);
|
|
|
|
/******************* Arria10 Device ECC Shared Functions *****************/
|
|
|
|
/*
|
|
* Test for memory's ECC dependencies upon entry because platform specific
|
|
* startup should have initialized the memory and enabled the ECC.
|
|
* Can't turn on ECC here because accessing un-initialized memory will
|
|
* cause CE/UE errors possibly causing an ABORT.
|
|
*/
|
|
static int __maybe_unused
|
|
altr_check_ecc_deps(struct altr_edac_device_dev *device)
|
|
{
|
|
void __iomem *base = device->base;
|
|
const struct edac_device_prv_data *prv = device->data;
|
|
|
|
if (readl(base + prv->ecc_en_ofst) & prv->ecc_enable_mask)
|
|
return 0;
|
|
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"%s: No ECC present or ECC disabled.\n",
|
|
device->edac_dev_name);
|
|
return -ENODEV;
|
|
}
|
|
|
|
static irqreturn_t __maybe_unused altr_edac_a10_ecc_irq(int irq, void *dev_id)
|
|
{
|
|
struct altr_edac_device_dev *dci = dev_id;
|
|
void __iomem *base = dci->base;
|
|
|
|
if (irq == dci->sb_irq) {
|
|
writel(ALTR_A10_ECC_SERRPENA,
|
|
base + ALTR_A10_ECC_INTSTAT_OFST);
|
|
edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name);
|
|
|
|
return IRQ_HANDLED;
|
|
} else if (irq == dci->db_irq) {
|
|
writel(ALTR_A10_ECC_DERRPENA,
|
|
base + ALTR_A10_ECC_INTSTAT_OFST);
|
|
edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name);
|
|
if (dci->data->panic)
|
|
panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
WARN_ON(1);
|
|
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
/******************* Arria10 Memory Buffer Functions *********************/
|
|
|
|
static inline int a10_get_irq_mask(struct device_node *np)
|
|
{
|
|
int irq;
|
|
const u32 *handle = of_get_property(np, "interrupts", NULL);
|
|
|
|
if (!handle)
|
|
return -ENODEV;
|
|
irq = be32_to_cpup(handle);
|
|
return irq;
|
|
}
|
|
|
|
static inline void ecc_set_bits(u32 bit_mask, void __iomem *ioaddr)
|
|
{
|
|
u32 value = readl(ioaddr);
|
|
|
|
value |= bit_mask;
|
|
writel(value, ioaddr);
|
|
}
|
|
|
|
static inline void ecc_clear_bits(u32 bit_mask, void __iomem *ioaddr)
|
|
{
|
|
u32 value = readl(ioaddr);
|
|
|
|
value &= ~bit_mask;
|
|
writel(value, ioaddr);
|
|
}
|
|
|
|
static inline int ecc_test_bits(u32 bit_mask, void __iomem *ioaddr)
|
|
{
|
|
u32 value = readl(ioaddr);
|
|
|
|
return (value & bit_mask) ? 1 : 0;
|
|
}
|
|
|
|
/*
|
|
* This function uses the memory initialization block in the Arria10 ECC
|
|
* controller to initialize/clear the entire memory data and ECC data.
|
|
*/
|
|
static int __maybe_unused altr_init_memory_port(void __iomem *ioaddr, int port)
|
|
{
|
|
int limit = ALTR_A10_ECC_INIT_WATCHDOG_10US;
|
|
u32 init_mask, stat_mask, clear_mask;
|
|
int ret = 0;
|
|
|
|
if (port) {
|
|
init_mask = ALTR_A10_ECC_INITB;
|
|
stat_mask = ALTR_A10_ECC_INITCOMPLETEB;
|
|
clear_mask = ALTR_A10_ECC_ERRPENB_MASK;
|
|
} else {
|
|
init_mask = ALTR_A10_ECC_INITA;
|
|
stat_mask = ALTR_A10_ECC_INITCOMPLETEA;
|
|
clear_mask = ALTR_A10_ECC_ERRPENA_MASK;
|
|
}
|
|
|
|
ecc_set_bits(init_mask, (ioaddr + ALTR_A10_ECC_CTRL_OFST));
|
|
while (limit--) {
|
|
if (ecc_test_bits(stat_mask,
|
|
(ioaddr + ALTR_A10_ECC_INITSTAT_OFST)))
|
|
break;
|
|
udelay(1);
|
|
}
|
|
if (limit < 0)
|
|
ret = -EBUSY;
|
|
|
|
/* Clear any pending ECC interrupts */
|
|
writel(clear_mask, (ioaddr + ALTR_A10_ECC_INTSTAT_OFST));
|
|
|
|
return ret;
|
|
}
|
|
|
|
static __init int __maybe_unused
|
|
altr_init_a10_ecc_block(struct device_node *np, u32 irq_mask,
|
|
u32 ecc_ctrl_en_mask, bool dual_port)
|
|
{
|
|
int ret = 0;
|
|
void __iomem *ecc_block_base;
|
|
struct regmap *ecc_mgr_map;
|
|
char *ecc_name;
|
|
struct device_node *np_eccmgr;
|
|
|
|
ecc_name = (char *)np->name;
|
|
|
|
/* Get the ECC Manager - parent of the device EDACs */
|
|
np_eccmgr = of_get_parent(np);
|
|
|
|
ecc_mgr_map =
|
|
altr_sysmgr_regmap_lookup_by_phandle(np_eccmgr,
|
|
"altr,sysmgr-syscon");
|
|
|
|
of_node_put(np_eccmgr);
|
|
if (IS_ERR(ecc_mgr_map)) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"Unable to get syscon altr,sysmgr-syscon\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Map the ECC Block */
|
|
ecc_block_base = of_iomap(np, 0);
|
|
if (!ecc_block_base) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"Unable to map %s ECC block\n", ecc_name);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Disable ECC */
|
|
regmap_write(ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_SET_OFST, irq_mask);
|
|
writel(ALTR_A10_ECC_SERRINTEN,
|
|
(ecc_block_base + ALTR_A10_ECC_ERRINTENR_OFST));
|
|
ecc_clear_bits(ecc_ctrl_en_mask,
|
|
(ecc_block_base + ALTR_A10_ECC_CTRL_OFST));
|
|
/* Ensure all writes complete */
|
|
wmb();
|
|
/* Use HW initialization block to initialize memory for ECC */
|
|
ret = altr_init_memory_port(ecc_block_base, 0);
|
|
if (ret) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"ECC: cannot init %s PORTA memory\n", ecc_name);
|
|
goto out;
|
|
}
|
|
|
|
if (dual_port) {
|
|
ret = altr_init_memory_port(ecc_block_base, 1);
|
|
if (ret) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"ECC: cannot init %s PORTB memory\n",
|
|
ecc_name);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
/* Interrupt mode set to every SBERR */
|
|
regmap_write(ecc_mgr_map, ALTR_A10_ECC_INTMODE_OFST,
|
|
ALTR_A10_ECC_INTMODE);
|
|
/* Enable ECC */
|
|
ecc_set_bits(ecc_ctrl_en_mask, (ecc_block_base +
|
|
ALTR_A10_ECC_CTRL_OFST));
|
|
writel(ALTR_A10_ECC_SERRINTEN,
|
|
(ecc_block_base + ALTR_A10_ECC_ERRINTENS_OFST));
|
|
regmap_write(ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_CLR_OFST, irq_mask);
|
|
/* Ensure all writes complete */
|
|
wmb();
|
|
out:
|
|
iounmap(ecc_block_base);
|
|
return ret;
|
|
}
|
|
|
|
static int validate_parent_available(struct device_node *np);
|
|
static const struct of_device_id altr_edac_a10_device_of_match[];
|
|
static int __init __maybe_unused altr_init_a10_ecc_device_type(char *compat)
|
|
{
|
|
int irq;
|
|
struct device_node *child, *np;
|
|
|
|
np = of_find_compatible_node(NULL, NULL,
|
|
"altr,socfpga-a10-ecc-manager");
|
|
if (!np) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE, "ECC Manager not found\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
for_each_child_of_node(np, child) {
|
|
const struct of_device_id *pdev_id;
|
|
const struct edac_device_prv_data *prv;
|
|
|
|
if (!of_device_is_available(child))
|
|
continue;
|
|
if (!of_device_is_compatible(child, compat))
|
|
continue;
|
|
|
|
if (validate_parent_available(child))
|
|
continue;
|
|
|
|
irq = a10_get_irq_mask(child);
|
|
if (irq < 0)
|
|
continue;
|
|
|
|
/* Get matching node and check for valid result */
|
|
pdev_id = of_match_node(altr_edac_a10_device_of_match, child);
|
|
if (IS_ERR_OR_NULL(pdev_id))
|
|
continue;
|
|
|
|
/* Validate private data pointer before dereferencing */
|
|
prv = pdev_id->data;
|
|
if (!prv)
|
|
continue;
|
|
|
|
altr_init_a10_ecc_block(child, BIT(irq),
|
|
prv->ecc_enable_mask, 0);
|
|
}
|
|
|
|
of_node_put(np);
|
|
return 0;
|
|
}
|
|
|
|
/*********************** SDRAM EDAC Device Functions *********************/
|
|
|
|
#ifdef CONFIG_EDAC_ALTERA_SDRAM
|
|
|
|
/*
|
|
* A legacy U-Boot bug only enabled memory mapped access to the ECC Enable
|
|
* register if ECC is enabled. Linux checks the ECC Enable register to
|
|
* determine ECC status.
|
|
* Use an SMC call (which always works) to determine ECC enablement.
|
|
*/
|
|
static int altr_s10_sdram_check_ecc_deps(struct altr_edac_device_dev *device)
|
|
{
|
|
const struct edac_device_prv_data *prv = device->data;
|
|
unsigned long sdram_ecc_addr;
|
|
struct arm_smccc_res result;
|
|
struct device_node *np;
|
|
phys_addr_t sdram_addr;
|
|
u32 read_reg;
|
|
int ret;
|
|
|
|
np = of_find_compatible_node(NULL, NULL, "altr,sdr-ctl");
|
|
if (!np)
|
|
goto sdram_err;
|
|
|
|
sdram_addr = of_translate_address(np, of_get_address(np, 0,
|
|
NULL, NULL));
|
|
of_node_put(np);
|
|
sdram_ecc_addr = (unsigned long)sdram_addr + prv->ecc_en_ofst;
|
|
arm_smccc_smc(INTEL_SIP_SMC_REG_READ, sdram_ecc_addr,
|
|
0, 0, 0, 0, 0, 0, &result);
|
|
read_reg = (unsigned int)result.a1;
|
|
ret = (int)result.a0;
|
|
if (!ret && (read_reg & prv->ecc_enable_mask))
|
|
return 0;
|
|
|
|
sdram_err:
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"%s: No ECC present or ECC disabled.\n",
|
|
device->edac_dev_name);
|
|
return -ENODEV;
|
|
}
|
|
|
|
static const struct edac_device_prv_data s10_sdramecc_data = {
|
|
.setup = altr_s10_sdram_check_ecc_deps,
|
|
.ce_clear_mask = ALTR_S10_ECC_SERRPENA,
|
|
.ue_clear_mask = ALTR_S10_ECC_DERRPENA,
|
|
.ecc_enable_mask = ALTR_S10_ECC_EN,
|
|
.ecc_en_ofst = ALTR_S10_ECC_CTRL_SDRAM_OFST,
|
|
.ce_set_mask = ALTR_S10_ECC_TSERRA,
|
|
.ue_set_mask = ALTR_S10_ECC_TDERRA,
|
|
.set_err_ofst = ALTR_S10_ECC_INTTEST_OFST,
|
|
.ecc_irq_handler = altr_edac_a10_ecc_irq,
|
|
.inject_fops = &altr_edac_a10_device_inject_fops,
|
|
};
|
|
#endif /* CONFIG_EDAC_ALTERA_SDRAM */
|
|
|
|
/*********************** OCRAM EDAC Device Functions *********************/
|
|
|
|
#ifdef CONFIG_EDAC_ALTERA_OCRAM
|
|
|
|
static void *ocram_alloc_mem(size_t size, void **other)
|
|
{
|
|
struct device_node *np;
|
|
struct gen_pool *gp;
|
|
void *sram_addr;
|
|
|
|
np = of_find_compatible_node(NULL, NULL, "altr,socfpga-ocram-ecc");
|
|
if (!np)
|
|
return NULL;
|
|
|
|
gp = of_gen_pool_get(np, "iram", 0);
|
|
of_node_put(np);
|
|
if (!gp)
|
|
return NULL;
|
|
|
|
sram_addr = (void *)gen_pool_alloc(gp, size);
|
|
if (!sram_addr)
|
|
return NULL;
|
|
|
|
memset(sram_addr, 0, size);
|
|
/* Ensure data is written out */
|
|
wmb();
|
|
|
|
/* Remember this handle for freeing later */
|
|
*other = gp;
|
|
|
|
return sram_addr;
|
|
}
|
|
|
|
static void ocram_free_mem(void *p, size_t size, void *other)
|
|
{
|
|
gen_pool_free((struct gen_pool *)other, (unsigned long)p, size);
|
|
}
|
|
|
|
static const struct edac_device_prv_data ocramecc_data = {
|
|
.setup = altr_check_ecc_deps,
|
|
.ce_clear_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_SERR),
|
|
.ue_clear_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_DERR),
|
|
.alloc_mem = ocram_alloc_mem,
|
|
.free_mem = ocram_free_mem,
|
|
.ecc_enable_mask = ALTR_OCR_ECC_EN,
|
|
.ecc_en_ofst = ALTR_OCR_ECC_REG_OFFSET,
|
|
.ce_set_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_INJS),
|
|
.ue_set_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_INJD),
|
|
.set_err_ofst = ALTR_OCR_ECC_REG_OFFSET,
|
|
.trig_alloc_sz = ALTR_TRIG_OCRAM_BYTE_SIZE,
|
|
.inject_fops = &altr_edac_device_inject_fops,
|
|
};
|
|
|
|
static int __maybe_unused
|
|
altr_check_ocram_deps_init(struct altr_edac_device_dev *device)
|
|
{
|
|
void __iomem *base = device->base;
|
|
int ret;
|
|
|
|
ret = altr_check_ecc_deps(device);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Verify OCRAM has been initialized */
|
|
if (!ecc_test_bits(ALTR_A10_ECC_INITCOMPLETEA,
|
|
(base + ALTR_A10_ECC_INITSTAT_OFST)))
|
|
return -ENODEV;
|
|
|
|
/* Enable IRQ on Single Bit Error */
|
|
writel(ALTR_A10_ECC_SERRINTEN, (base + ALTR_A10_ECC_ERRINTENS_OFST));
|
|
/* Ensure all writes complete */
|
|
wmb();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct edac_device_prv_data a10_ocramecc_data = {
|
|
.setup = altr_check_ocram_deps_init,
|
|
.ce_clear_mask = ALTR_A10_ECC_SERRPENA,
|
|
.ue_clear_mask = ALTR_A10_ECC_DERRPENA,
|
|
.irq_status_mask = A10_SYSMGR_ECC_INTSTAT_OCRAM,
|
|
.ecc_enable_mask = ALTR_A10_OCRAM_ECC_EN_CTL,
|
|
.ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
|
|
.ce_set_mask = ALTR_A10_ECC_TSERRA,
|
|
.ue_set_mask = ALTR_A10_ECC_TDERRA,
|
|
.set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
|
|
.ecc_irq_handler = altr_edac_a10_ecc_irq,
|
|
.inject_fops = &altr_edac_a10_device_inject2_fops,
|
|
/*
|
|
* OCRAM panic on uncorrectable error because sleep/resume
|
|
* functions and FPGA contents are stored in OCRAM. Prefer
|
|
* a kernel panic over executing/loading corrupted data.
|
|
*/
|
|
.panic = true,
|
|
};
|
|
|
|
#endif /* CONFIG_EDAC_ALTERA_OCRAM */
|
|
|
|
/********************* L2 Cache EDAC Device Functions ********************/
|
|
|
|
#ifdef CONFIG_EDAC_ALTERA_L2C
|
|
|
|
static void *l2_alloc_mem(size_t size, void **other)
|
|
{
|
|
struct device *dev = *other;
|
|
void *ptemp = devm_kzalloc(dev, size, GFP_KERNEL);
|
|
|
|
if (!ptemp)
|
|
return NULL;
|
|
|
|
/* Make sure everything is written out */
|
|
wmb();
|
|
|
|
/*
|
|
* Clean all cache levels up to LoC (includes L2)
|
|
* This ensures the corrupted data is written into
|
|
* L2 cache for readback test (which causes ECC error).
|
|
*/
|
|
flush_cache_all();
|
|
|
|
return ptemp;
|
|
}
|
|
|
|
static void l2_free_mem(void *p, size_t size, void *other)
|
|
{
|
|
struct device *dev = other;
|
|
|
|
if (dev && p)
|
|
devm_kfree(dev, p);
|
|
}
|
|
|
|
/*
|
|
* altr_l2_check_deps()
|
|
* Test for L2 cache ECC dependencies upon entry because
|
|
* platform specific startup should have initialized the L2
|
|
* memory and enabled the ECC.
|
|
* Bail if ECC is not enabled.
|
|
* Note that L2 Cache Enable is forced at build time.
|
|
*/
|
|
static int altr_l2_check_deps(struct altr_edac_device_dev *device)
|
|
{
|
|
void __iomem *base = device->base;
|
|
const struct edac_device_prv_data *prv = device->data;
|
|
|
|
if ((readl(base) & prv->ecc_enable_mask) ==
|
|
prv->ecc_enable_mask)
|
|
return 0;
|
|
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"L2: No ECC present, or ECC disabled\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
static irqreturn_t altr_edac_a10_l2_irq(int irq, void *dev_id)
|
|
{
|
|
struct altr_edac_device_dev *dci = dev_id;
|
|
|
|
if (irq == dci->sb_irq) {
|
|
regmap_write(dci->edac->ecc_mgr_map,
|
|
A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST,
|
|
A10_SYSGMR_MPU_CLEAR_L2_ECC_SB);
|
|
edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name);
|
|
|
|
return IRQ_HANDLED;
|
|
} else if (irq == dci->db_irq) {
|
|
regmap_write(dci->edac->ecc_mgr_map,
|
|
A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST,
|
|
A10_SYSGMR_MPU_CLEAR_L2_ECC_MB);
|
|
edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name);
|
|
panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
WARN_ON(1);
|
|
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
static const struct edac_device_prv_data l2ecc_data = {
|
|
.setup = altr_l2_check_deps,
|
|
.ce_clear_mask = 0,
|
|
.ue_clear_mask = 0,
|
|
.alloc_mem = l2_alloc_mem,
|
|
.free_mem = l2_free_mem,
|
|
.ecc_enable_mask = ALTR_L2_ECC_EN,
|
|
.ce_set_mask = (ALTR_L2_ECC_EN | ALTR_L2_ECC_INJS),
|
|
.ue_set_mask = (ALTR_L2_ECC_EN | ALTR_L2_ECC_INJD),
|
|
.set_err_ofst = ALTR_L2_ECC_REG_OFFSET,
|
|
.trig_alloc_sz = ALTR_TRIG_L2C_BYTE_SIZE,
|
|
.inject_fops = &altr_edac_device_inject_fops,
|
|
};
|
|
|
|
static const struct edac_device_prv_data a10_l2ecc_data = {
|
|
.setup = altr_l2_check_deps,
|
|
.ce_clear_mask = ALTR_A10_L2_ECC_SERR_CLR,
|
|
.ue_clear_mask = ALTR_A10_L2_ECC_MERR_CLR,
|
|
.irq_status_mask = A10_SYSMGR_ECC_INTSTAT_L2,
|
|
.alloc_mem = l2_alloc_mem,
|
|
.free_mem = l2_free_mem,
|
|
.ecc_enable_mask = ALTR_A10_L2_ECC_EN_CTL,
|
|
.ce_set_mask = ALTR_A10_L2_ECC_CE_INJ_MASK,
|
|
.ue_set_mask = ALTR_A10_L2_ECC_UE_INJ_MASK,
|
|
.set_err_ofst = ALTR_A10_L2_ECC_INJ_OFST,
|
|
.ecc_irq_handler = altr_edac_a10_l2_irq,
|
|
.trig_alloc_sz = ALTR_TRIG_L2C_BYTE_SIZE,
|
|
.inject_fops = &altr_edac_device_inject_fops,
|
|
};
|
|
|
|
#endif /* CONFIG_EDAC_ALTERA_L2C */
|
|
|
|
/********************* Ethernet Device Functions ********************/
|
|
|
|
#ifdef CONFIG_EDAC_ALTERA_ETHERNET
|
|
|
|
static int __init socfpga_init_ethernet_ecc(struct altr_edac_device_dev *dev)
|
|
{
|
|
int ret;
|
|
|
|
ret = altr_init_a10_ecc_device_type("altr,socfpga-eth-mac-ecc");
|
|
if (ret)
|
|
return ret;
|
|
|
|
return altr_check_ecc_deps(dev);
|
|
}
|
|
|
|
static const struct edac_device_prv_data a10_enetecc_data = {
|
|
.setup = socfpga_init_ethernet_ecc,
|
|
.ce_clear_mask = ALTR_A10_ECC_SERRPENA,
|
|
.ue_clear_mask = ALTR_A10_ECC_DERRPENA,
|
|
.ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
|
|
.ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
|
|
.ce_set_mask = ALTR_A10_ECC_TSERRA,
|
|
.ue_set_mask = ALTR_A10_ECC_TDERRA,
|
|
.set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
|
|
.ecc_irq_handler = altr_edac_a10_ecc_irq,
|
|
.inject_fops = &altr_edac_a10_device_inject2_fops,
|
|
};
|
|
|
|
#endif /* CONFIG_EDAC_ALTERA_ETHERNET */
|
|
|
|
/********************** NAND Device Functions **********************/
|
|
|
|
#ifdef CONFIG_EDAC_ALTERA_NAND
|
|
|
|
static int __init socfpga_init_nand_ecc(struct altr_edac_device_dev *device)
|
|
{
|
|
int ret;
|
|
|
|
ret = altr_init_a10_ecc_device_type("altr,socfpga-nand-ecc");
|
|
if (ret)
|
|
return ret;
|
|
|
|
return altr_check_ecc_deps(device);
|
|
}
|
|
|
|
static const struct edac_device_prv_data a10_nandecc_data = {
|
|
.setup = socfpga_init_nand_ecc,
|
|
.ce_clear_mask = ALTR_A10_ECC_SERRPENA,
|
|
.ue_clear_mask = ALTR_A10_ECC_DERRPENA,
|
|
.ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
|
|
.ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
|
|
.ce_set_mask = ALTR_A10_ECC_TSERRA,
|
|
.ue_set_mask = ALTR_A10_ECC_TDERRA,
|
|
.set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
|
|
.ecc_irq_handler = altr_edac_a10_ecc_irq,
|
|
.inject_fops = &altr_edac_a10_device_inject_fops,
|
|
};
|
|
|
|
#endif /* CONFIG_EDAC_ALTERA_NAND */
|
|
|
|
/********************** DMA Device Functions **********************/
|
|
|
|
#ifdef CONFIG_EDAC_ALTERA_DMA
|
|
|
|
static int __init socfpga_init_dma_ecc(struct altr_edac_device_dev *device)
|
|
{
|
|
int ret;
|
|
|
|
ret = altr_init_a10_ecc_device_type("altr,socfpga-dma-ecc");
|
|
if (ret)
|
|
return ret;
|
|
|
|
return altr_check_ecc_deps(device);
|
|
}
|
|
|
|
static const struct edac_device_prv_data a10_dmaecc_data = {
|
|
.setup = socfpga_init_dma_ecc,
|
|
.ce_clear_mask = ALTR_A10_ECC_SERRPENA,
|
|
.ue_clear_mask = ALTR_A10_ECC_DERRPENA,
|
|
.ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
|
|
.ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
|
|
.ce_set_mask = ALTR_A10_ECC_TSERRA,
|
|
.ue_set_mask = ALTR_A10_ECC_TDERRA,
|
|
.set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
|
|
.ecc_irq_handler = altr_edac_a10_ecc_irq,
|
|
.inject_fops = &altr_edac_a10_device_inject_fops,
|
|
};
|
|
|
|
#endif /* CONFIG_EDAC_ALTERA_DMA */
|
|
|
|
/********************** USB Device Functions **********************/
|
|
|
|
#ifdef CONFIG_EDAC_ALTERA_USB
|
|
|
|
static int __init socfpga_init_usb_ecc(struct altr_edac_device_dev *device)
|
|
{
|
|
int ret;
|
|
|
|
ret = altr_init_a10_ecc_device_type("altr,socfpga-usb-ecc");
|
|
if (ret)
|
|
return ret;
|
|
|
|
return altr_check_ecc_deps(device);
|
|
}
|
|
|
|
static const struct edac_device_prv_data a10_usbecc_data = {
|
|
.setup = socfpga_init_usb_ecc,
|
|
.ce_clear_mask = ALTR_A10_ECC_SERRPENA,
|
|
.ue_clear_mask = ALTR_A10_ECC_DERRPENA,
|
|
.ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
|
|
.ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
|
|
.ce_set_mask = ALTR_A10_ECC_TSERRA,
|
|
.ue_set_mask = ALTR_A10_ECC_TDERRA,
|
|
.set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
|
|
.ecc_irq_handler = altr_edac_a10_ecc_irq,
|
|
.inject_fops = &altr_edac_a10_device_inject2_fops,
|
|
};
|
|
|
|
#endif /* CONFIG_EDAC_ALTERA_USB */
|
|
|
|
/********************** QSPI Device Functions **********************/
|
|
|
|
#ifdef CONFIG_EDAC_ALTERA_QSPI
|
|
|
|
static int __init socfpga_init_qspi_ecc(struct altr_edac_device_dev *device)
|
|
{
|
|
int ret;
|
|
|
|
ret = altr_init_a10_ecc_device_type("altr,socfpga-qspi-ecc");
|
|
if (ret)
|
|
return ret;
|
|
|
|
return altr_check_ecc_deps(device);
|
|
}
|
|
|
|
static const struct edac_device_prv_data a10_qspiecc_data = {
|
|
.setup = socfpga_init_qspi_ecc,
|
|
.ce_clear_mask = ALTR_A10_ECC_SERRPENA,
|
|
.ue_clear_mask = ALTR_A10_ECC_DERRPENA,
|
|
.ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
|
|
.ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
|
|
.ce_set_mask = ALTR_A10_ECC_TSERRA,
|
|
.ue_set_mask = ALTR_A10_ECC_TDERRA,
|
|
.set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
|
|
.ecc_irq_handler = altr_edac_a10_ecc_irq,
|
|
.inject_fops = &altr_edac_a10_device_inject_fops,
|
|
};
|
|
|
|
#endif /* CONFIG_EDAC_ALTERA_QSPI */
|
|
|
|
/********************* SDMMC Device Functions **********************/
|
|
|
|
#ifdef CONFIG_EDAC_ALTERA_SDMMC
|
|
|
|
static const struct edac_device_prv_data a10_sdmmceccb_data;
|
|
static int altr_portb_setup(struct altr_edac_device_dev *device)
|
|
{
|
|
struct edac_device_ctl_info *dci;
|
|
struct altr_edac_device_dev *altdev;
|
|
char *ecc_name = "sdmmcb-ecc";
|
|
int edac_idx, rc;
|
|
struct device_node *np;
|
|
const struct edac_device_prv_data *prv = &a10_sdmmceccb_data;
|
|
|
|
rc = altr_check_ecc_deps(device);
|
|
if (rc)
|
|
return rc;
|
|
|
|
np = of_find_compatible_node(NULL, NULL, "altr,socfpga-sdmmc-ecc");
|
|
if (!np) {
|
|
edac_printk(KERN_WARNING, EDAC_DEVICE, "SDMMC node not found\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Create the PortB EDAC device */
|
|
edac_idx = edac_device_alloc_index();
|
|
dci = edac_device_alloc_ctl_info(sizeof(*altdev), ecc_name, 1,
|
|
ecc_name, 1, 0, NULL, 0, edac_idx);
|
|
if (!dci) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"%s: Unable to allocate PortB EDAC device\n",
|
|
ecc_name);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Initialize the PortB EDAC device structure from PortA structure */
|
|
altdev = dci->pvt_info;
|
|
*altdev = *device;
|
|
|
|
if (!devres_open_group(&altdev->ddev, altr_portb_setup, GFP_KERNEL))
|
|
return -ENOMEM;
|
|
|
|
/* Update PortB specific values */
|
|
altdev->edac_dev_name = ecc_name;
|
|
altdev->edac_idx = edac_idx;
|
|
altdev->edac_dev = dci;
|
|
altdev->data = prv;
|
|
dci->dev = &altdev->ddev;
|
|
dci->ctl_name = "Altera ECC Manager";
|
|
dci->mod_name = ecc_name;
|
|
dci->dev_name = ecc_name;
|
|
|
|
/*
|
|
* Update the PortB IRQs - A10 has 4, S10 has 2, Index accordingly
|
|
*
|
|
* FIXME: Instead of ifdefs with different architectures the driver
|
|
* should properly use compatibles.
|
|
*/
|
|
#ifdef CONFIG_64BIT
|
|
altdev->sb_irq = irq_of_parse_and_map(np, 1);
|
|
#else
|
|
altdev->sb_irq = irq_of_parse_and_map(np, 2);
|
|
#endif
|
|
if (!altdev->sb_irq) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE, "Error PortB SBIRQ alloc\n");
|
|
rc = -ENODEV;
|
|
goto err_release_group_1;
|
|
}
|
|
rc = devm_request_irq(&altdev->ddev, altdev->sb_irq,
|
|
prv->ecc_irq_handler,
|
|
IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
|
|
ecc_name, altdev);
|
|
if (rc) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE, "PortB SBERR IRQ error\n");
|
|
goto err_release_group_1;
|
|
}
|
|
|
|
#ifdef CONFIG_64BIT
|
|
/* Use IRQ to determine SError origin instead of assigning IRQ */
|
|
rc = of_property_read_u32_index(np, "interrupts", 1, &altdev->db_irq);
|
|
if (rc) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"Error PortB DBIRQ alloc\n");
|
|
goto err_release_group_1;
|
|
}
|
|
#else
|
|
altdev->db_irq = irq_of_parse_and_map(np, 3);
|
|
if (!altdev->db_irq) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE, "Error PortB DBIRQ alloc\n");
|
|
rc = -ENODEV;
|
|
goto err_release_group_1;
|
|
}
|
|
rc = devm_request_irq(&altdev->ddev, altdev->db_irq,
|
|
prv->ecc_irq_handler,
|
|
IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
|
|
ecc_name, altdev);
|
|
if (rc) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE, "PortB DBERR IRQ error\n");
|
|
goto err_release_group_1;
|
|
}
|
|
#endif
|
|
|
|
rc = edac_device_add_device(dci);
|
|
if (rc) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"edac_device_add_device portB failed\n");
|
|
rc = -ENOMEM;
|
|
goto err_release_group_1;
|
|
}
|
|
altr_create_edacdev_dbgfs(dci, prv);
|
|
|
|
list_add(&altdev->next, &altdev->edac->a10_ecc_devices);
|
|
|
|
devres_remove_group(&altdev->ddev, altr_portb_setup);
|
|
|
|
return 0;
|
|
|
|
err_release_group_1:
|
|
edac_device_free_ctl_info(dci);
|
|
devres_release_group(&altdev->ddev, altr_portb_setup);
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"%s:Error setting up EDAC device: %d\n", ecc_name, rc);
|
|
return rc;
|
|
}
|
|
|
|
static int __init socfpga_init_sdmmc_ecc(struct altr_edac_device_dev *device)
|
|
{
|
|
int rc = -ENODEV;
|
|
struct device_node *child;
|
|
|
|
child = of_find_compatible_node(NULL, NULL, "altr,socfpga-sdmmc-ecc");
|
|
if (!child)
|
|
return -ENODEV;
|
|
|
|
if (!of_device_is_available(child))
|
|
goto exit;
|
|
|
|
if (validate_parent_available(child))
|
|
goto exit;
|
|
|
|
/* Init portB */
|
|
rc = altr_init_a10_ecc_block(child, ALTR_A10_SDMMC_IRQ_MASK,
|
|
a10_sdmmceccb_data.ecc_enable_mask, 1);
|
|
if (rc)
|
|
goto exit;
|
|
|
|
/* Setup portB */
|
|
return altr_portb_setup(device);
|
|
|
|
exit:
|
|
of_node_put(child);
|
|
return rc;
|
|
}
|
|
|
|
static irqreturn_t altr_edac_a10_ecc_irq_portb(int irq, void *dev_id)
|
|
{
|
|
struct altr_edac_device_dev *ad = dev_id;
|
|
void __iomem *base = ad->base;
|
|
const struct edac_device_prv_data *priv = ad->data;
|
|
|
|
if (irq == ad->sb_irq) {
|
|
writel(priv->ce_clear_mask,
|
|
base + ALTR_A10_ECC_INTSTAT_OFST);
|
|
edac_device_handle_ce(ad->edac_dev, 0, 0, ad->edac_dev_name);
|
|
return IRQ_HANDLED;
|
|
} else if (irq == ad->db_irq) {
|
|
writel(priv->ue_clear_mask,
|
|
base + ALTR_A10_ECC_INTSTAT_OFST);
|
|
edac_device_handle_ue(ad->edac_dev, 0, 0, ad->edac_dev_name);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
WARN_ONCE(1, "Unhandled IRQ%d on Port B.", irq);
|
|
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
static const struct edac_device_prv_data a10_sdmmcecca_data = {
|
|
.setup = socfpga_init_sdmmc_ecc,
|
|
.ce_clear_mask = ALTR_A10_ECC_SERRPENA,
|
|
.ue_clear_mask = ALTR_A10_ECC_DERRPENA,
|
|
.ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
|
|
.ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
|
|
.ce_set_mask = ALTR_A10_ECC_SERRPENA,
|
|
.ue_set_mask = ALTR_A10_ECC_DERRPENA,
|
|
.set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
|
|
.ecc_irq_handler = altr_edac_a10_ecc_irq,
|
|
.inject_fops = &altr_edac_a10_device_inject_fops,
|
|
};
|
|
|
|
static const struct edac_device_prv_data a10_sdmmceccb_data = {
|
|
.setup = socfpga_init_sdmmc_ecc,
|
|
.ce_clear_mask = ALTR_A10_ECC_SERRPENB,
|
|
.ue_clear_mask = ALTR_A10_ECC_DERRPENB,
|
|
.ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
|
|
.ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
|
|
.ce_set_mask = ALTR_A10_ECC_TSERRB,
|
|
.ue_set_mask = ALTR_A10_ECC_TDERRB,
|
|
.set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
|
|
.ecc_irq_handler = altr_edac_a10_ecc_irq_portb,
|
|
.inject_fops = &altr_edac_a10_device_inject_fops,
|
|
};
|
|
|
|
#endif /* CONFIG_EDAC_ALTERA_SDMMC */
|
|
|
|
/********************* Arria10 EDAC Device Functions *************************/
|
|
static const struct of_device_id altr_edac_a10_device_of_match[] = {
|
|
#ifdef CONFIG_EDAC_ALTERA_L2C
|
|
{ .compatible = "altr,socfpga-a10-l2-ecc", .data = &a10_l2ecc_data },
|
|
#endif
|
|
#ifdef CONFIG_EDAC_ALTERA_OCRAM
|
|
{ .compatible = "altr,socfpga-a10-ocram-ecc",
|
|
.data = &a10_ocramecc_data },
|
|
#endif
|
|
#ifdef CONFIG_EDAC_ALTERA_ETHERNET
|
|
{ .compatible = "altr,socfpga-eth-mac-ecc",
|
|
.data = &a10_enetecc_data },
|
|
#endif
|
|
#ifdef CONFIG_EDAC_ALTERA_NAND
|
|
{ .compatible = "altr,socfpga-nand-ecc", .data = &a10_nandecc_data },
|
|
#endif
|
|
#ifdef CONFIG_EDAC_ALTERA_DMA
|
|
{ .compatible = "altr,socfpga-dma-ecc", .data = &a10_dmaecc_data },
|
|
#endif
|
|
#ifdef CONFIG_EDAC_ALTERA_USB
|
|
{ .compatible = "altr,socfpga-usb-ecc", .data = &a10_usbecc_data },
|
|
#endif
|
|
#ifdef CONFIG_EDAC_ALTERA_QSPI
|
|
{ .compatible = "altr,socfpga-qspi-ecc", .data = &a10_qspiecc_data },
|
|
#endif
|
|
#ifdef CONFIG_EDAC_ALTERA_SDMMC
|
|
{ .compatible = "altr,socfpga-sdmmc-ecc", .data = &a10_sdmmcecca_data },
|
|
#endif
|
|
#ifdef CONFIG_EDAC_ALTERA_SDRAM
|
|
{ .compatible = "altr,sdram-edac-s10", .data = &s10_sdramecc_data },
|
|
#endif
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, altr_edac_a10_device_of_match);
|
|
|
|
/*
|
|
* The Arria10 EDAC Device Functions differ from the Cyclone5/Arria5
|
|
* because 2 IRQs are shared among the all ECC peripherals. The ECC
|
|
* manager manages the IRQs and the children.
|
|
* Based on xgene_edac.c peripheral code.
|
|
*/
|
|
|
|
static ssize_t __maybe_unused
|
|
altr_edac_a10_device_trig(struct file *file, const char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct edac_device_ctl_info *edac_dci = file->private_data;
|
|
struct altr_edac_device_dev *drvdata = edac_dci->pvt_info;
|
|
const struct edac_device_prv_data *priv = drvdata->data;
|
|
void __iomem *set_addr = (drvdata->base + priv->set_err_ofst);
|
|
unsigned long flags;
|
|
u8 trig_type;
|
|
|
|
if (!user_buf || get_user(trig_type, user_buf))
|
|
return -EFAULT;
|
|
|
|
local_irq_save(flags);
|
|
if (trig_type == ALTR_UE_TRIGGER_CHAR)
|
|
writel(priv->ue_set_mask, set_addr);
|
|
else
|
|
writel(priv->ce_set_mask, set_addr);
|
|
|
|
/* Ensure the interrupt test bits are set */
|
|
wmb();
|
|
local_irq_restore(flags);
|
|
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* The Stratix10 EDAC Error Injection Functions differ from Arria10
|
|
* slightly. A few Arria10 peripherals can use this injection function.
|
|
* Inject the error into the memory and then readback to trigger the IRQ.
|
|
*/
|
|
static ssize_t __maybe_unused
|
|
altr_edac_a10_device_trig2(struct file *file, const char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct edac_device_ctl_info *edac_dci = file->private_data;
|
|
struct altr_edac_device_dev *drvdata = edac_dci->pvt_info;
|
|
const struct edac_device_prv_data *priv = drvdata->data;
|
|
void __iomem *set_addr = (drvdata->base + priv->set_err_ofst);
|
|
unsigned long flags;
|
|
u8 trig_type;
|
|
|
|
if (!user_buf || get_user(trig_type, user_buf))
|
|
return -EFAULT;
|
|
|
|
local_irq_save(flags);
|
|
if (trig_type == ALTR_UE_TRIGGER_CHAR) {
|
|
writel(priv->ue_set_mask, set_addr);
|
|
} else {
|
|
/* Setup read/write of 4 bytes */
|
|
writel(ECC_WORD_WRITE, drvdata->base + ECC_BLK_DBYTECTRL_OFST);
|
|
/* Setup Address to 0 */
|
|
writel(0, drvdata->base + ECC_BLK_ADDRESS_OFST);
|
|
/* Setup accctrl to read & ecc & data override */
|
|
writel(ECC_READ_EDOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST);
|
|
/* Kick it. */
|
|
writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST);
|
|
/* Setup write for single bit change */
|
|
writel(readl(drvdata->base + ECC_BLK_RDATA0_OFST) ^ 0x1,
|
|
drvdata->base + ECC_BLK_WDATA0_OFST);
|
|
writel(readl(drvdata->base + ECC_BLK_RDATA1_OFST),
|
|
drvdata->base + ECC_BLK_WDATA1_OFST);
|
|
writel(readl(drvdata->base + ECC_BLK_RDATA2_OFST),
|
|
drvdata->base + ECC_BLK_WDATA2_OFST);
|
|
writel(readl(drvdata->base + ECC_BLK_RDATA3_OFST),
|
|
drvdata->base + ECC_BLK_WDATA3_OFST);
|
|
|
|
/* Copy Read ECC to Write ECC */
|
|
writel(readl(drvdata->base + ECC_BLK_RECC0_OFST),
|
|
drvdata->base + ECC_BLK_WECC0_OFST);
|
|
writel(readl(drvdata->base + ECC_BLK_RECC1_OFST),
|
|
drvdata->base + ECC_BLK_WECC1_OFST);
|
|
/* Setup accctrl to write & ecc override & data override */
|
|
writel(ECC_WRITE_EDOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST);
|
|
/* Kick it. */
|
|
writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST);
|
|
/* Setup accctrl to read & ecc overwrite & data overwrite */
|
|
writel(ECC_READ_EDOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST);
|
|
/* Kick it. */
|
|
writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST);
|
|
}
|
|
|
|
/* Ensure the interrupt test bits are set */
|
|
wmb();
|
|
local_irq_restore(flags);
|
|
|
|
return count;
|
|
}
|
|
|
|
static void altr_edac_a10_irq_handler(struct irq_desc *desc)
|
|
{
|
|
int dberr, bit, sm_offset, irq_status;
|
|
struct altr_arria10_edac *edac = irq_desc_get_handler_data(desc);
|
|
struct irq_chip *chip = irq_desc_get_chip(desc);
|
|
int irq = irq_desc_get_irq(desc);
|
|
unsigned long bits;
|
|
|
|
dberr = (irq == edac->db_irq) ? 1 : 0;
|
|
sm_offset = dberr ? A10_SYSMGR_ECC_INTSTAT_DERR_OFST :
|
|
A10_SYSMGR_ECC_INTSTAT_SERR_OFST;
|
|
|
|
chained_irq_enter(chip, desc);
|
|
|
|
regmap_read(edac->ecc_mgr_map, sm_offset, &irq_status);
|
|
|
|
bits = irq_status;
|
|
for_each_set_bit(bit, &bits, 32)
|
|
generic_handle_domain_irq(edac->domain, dberr * 32 + bit);
|
|
|
|
chained_irq_exit(chip, desc);
|
|
}
|
|
|
|
static int validate_parent_available(struct device_node *np)
|
|
{
|
|
struct device_node *parent;
|
|
int ret = 0;
|
|
|
|
/* SDRAM must be present for Linux (implied parent) */
|
|
if (of_device_is_compatible(np, "altr,sdram-edac-s10"))
|
|
return 0;
|
|
|
|
/* Ensure parent device is enabled if parent node exists */
|
|
parent = of_parse_phandle(np, "altr,ecc-parent", 0);
|
|
if (parent && !of_device_is_available(parent))
|
|
ret = -ENODEV;
|
|
|
|
of_node_put(parent);
|
|
return ret;
|
|
}
|
|
|
|
static int get_s10_sdram_edac_resource(struct device_node *np,
|
|
struct resource *res)
|
|
{
|
|
struct device_node *parent;
|
|
int ret;
|
|
|
|
parent = of_parse_phandle(np, "altr,sdr-syscon", 0);
|
|
if (!parent)
|
|
return -ENODEV;
|
|
|
|
ret = of_address_to_resource(parent, 0, res);
|
|
of_node_put(parent);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int altr_edac_a10_device_add(struct altr_arria10_edac *edac,
|
|
struct device_node *np)
|
|
{
|
|
struct edac_device_ctl_info *dci;
|
|
struct altr_edac_device_dev *altdev;
|
|
char *ecc_name = (char *)np->name;
|
|
struct resource res;
|
|
int edac_idx;
|
|
int rc = 0;
|
|
const struct edac_device_prv_data *prv;
|
|
/* Get matching node and check for valid result */
|
|
const struct of_device_id *pdev_id =
|
|
of_match_node(altr_edac_a10_device_of_match, np);
|
|
if (IS_ERR_OR_NULL(pdev_id))
|
|
return -ENODEV;
|
|
|
|
/* Get driver specific data for this EDAC device */
|
|
prv = pdev_id->data;
|
|
if (IS_ERR_OR_NULL(prv))
|
|
return -ENODEV;
|
|
|
|
if (validate_parent_available(np))
|
|
return -ENODEV;
|
|
|
|
if (!devres_open_group(edac->dev, altr_edac_a10_device_add, GFP_KERNEL))
|
|
return -ENOMEM;
|
|
|
|
if (of_device_is_compatible(np, "altr,sdram-edac-s10"))
|
|
rc = get_s10_sdram_edac_resource(np, &res);
|
|
else
|
|
rc = of_address_to_resource(np, 0, &res);
|
|
|
|
if (rc < 0) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"%s: no resource address\n", ecc_name);
|
|
goto err_release_group;
|
|
}
|
|
|
|
edac_idx = edac_device_alloc_index();
|
|
dci = edac_device_alloc_ctl_info(sizeof(*altdev), ecc_name,
|
|
1, ecc_name, 1, 0, NULL, 0,
|
|
edac_idx);
|
|
|
|
if (!dci) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"%s: Unable to allocate EDAC device\n", ecc_name);
|
|
rc = -ENOMEM;
|
|
goto err_release_group;
|
|
}
|
|
|
|
altdev = dci->pvt_info;
|
|
dci->dev = edac->dev;
|
|
altdev->edac_dev_name = ecc_name;
|
|
altdev->edac_idx = edac_idx;
|
|
altdev->edac = edac;
|
|
altdev->edac_dev = dci;
|
|
altdev->data = prv;
|
|
altdev->ddev = *edac->dev;
|
|
dci->dev = &altdev->ddev;
|
|
dci->ctl_name = "Altera ECC Manager";
|
|
dci->mod_name = ecc_name;
|
|
dci->dev_name = ecc_name;
|
|
|
|
altdev->base = devm_ioremap_resource(edac->dev, &res);
|
|
if (IS_ERR(altdev->base)) {
|
|
rc = PTR_ERR(altdev->base);
|
|
goto err_release_group1;
|
|
}
|
|
|
|
/* Check specific dependencies for the module */
|
|
if (altdev->data->setup) {
|
|
rc = altdev->data->setup(altdev);
|
|
if (rc)
|
|
goto err_release_group1;
|
|
}
|
|
|
|
altdev->sb_irq = irq_of_parse_and_map(np, 0);
|
|
if (!altdev->sb_irq) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE, "Error allocating SBIRQ\n");
|
|
rc = -ENODEV;
|
|
goto err_release_group1;
|
|
}
|
|
rc = devm_request_irq(edac->dev, altdev->sb_irq, prv->ecc_irq_handler,
|
|
IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
|
|
ecc_name, altdev);
|
|
if (rc) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE, "No SBERR IRQ resource\n");
|
|
goto err_release_group1;
|
|
}
|
|
|
|
#ifdef CONFIG_64BIT
|
|
/* Use IRQ to determine SError origin instead of assigning IRQ */
|
|
rc = of_property_read_u32_index(np, "interrupts", 0, &altdev->db_irq);
|
|
if (rc) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"Unable to parse DB IRQ index\n");
|
|
goto err_release_group1;
|
|
}
|
|
#else
|
|
altdev->db_irq = irq_of_parse_and_map(np, 1);
|
|
if (!altdev->db_irq) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE, "Error allocating DBIRQ\n");
|
|
rc = -ENODEV;
|
|
goto err_release_group1;
|
|
}
|
|
rc = devm_request_irq(edac->dev, altdev->db_irq, prv->ecc_irq_handler,
|
|
IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
|
|
ecc_name, altdev);
|
|
if (rc) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE, "No DBERR IRQ resource\n");
|
|
goto err_release_group1;
|
|
}
|
|
#endif
|
|
|
|
rc = edac_device_add_device(dci);
|
|
if (rc) {
|
|
dev_err(edac->dev, "edac_device_add_device failed\n");
|
|
rc = -ENOMEM;
|
|
goto err_release_group1;
|
|
}
|
|
|
|
altr_create_edacdev_dbgfs(dci, prv);
|
|
|
|
list_add(&altdev->next, &edac->a10_ecc_devices);
|
|
|
|
devres_remove_group(edac->dev, altr_edac_a10_device_add);
|
|
|
|
return 0;
|
|
|
|
err_release_group1:
|
|
edac_device_free_ctl_info(dci);
|
|
err_release_group:
|
|
devres_release_group(edac->dev, NULL);
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"%s:Error setting up EDAC device: %d\n", ecc_name, rc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void a10_eccmgr_irq_mask(struct irq_data *d)
|
|
{
|
|
struct altr_arria10_edac *edac = irq_data_get_irq_chip_data(d);
|
|
|
|
regmap_write(edac->ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_SET_OFST,
|
|
BIT(d->hwirq));
|
|
}
|
|
|
|
static void a10_eccmgr_irq_unmask(struct irq_data *d)
|
|
{
|
|
struct altr_arria10_edac *edac = irq_data_get_irq_chip_data(d);
|
|
|
|
regmap_write(edac->ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_CLR_OFST,
|
|
BIT(d->hwirq));
|
|
}
|
|
|
|
static int a10_eccmgr_irqdomain_map(struct irq_domain *d, unsigned int irq,
|
|
irq_hw_number_t hwirq)
|
|
{
|
|
struct altr_arria10_edac *edac = d->host_data;
|
|
|
|
irq_set_chip_and_handler(irq, &edac->irq_chip, handle_simple_irq);
|
|
irq_set_chip_data(irq, edac);
|
|
irq_set_noprobe(irq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct irq_domain_ops a10_eccmgr_ic_ops = {
|
|
.map = a10_eccmgr_irqdomain_map,
|
|
.xlate = irq_domain_xlate_twocell,
|
|
};
|
|
|
|
/************** Stratix 10 EDAC Double Bit Error Handler ************/
|
|
#define to_a10edac(p, m) container_of(p, struct altr_arria10_edac, m)
|
|
|
|
#ifdef CONFIG_64BIT
|
|
/* panic routine issues reboot on non-zero panic_timeout */
|
|
extern int panic_timeout;
|
|
|
|
/*
|
|
* The double bit error is handled through SError which is fatal. This is
|
|
* called as a panic notifier to printout ECC error info as part of the panic.
|
|
*/
|
|
static int s10_edac_dberr_handler(struct notifier_block *this,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
struct altr_arria10_edac *edac = to_a10edac(this, panic_notifier);
|
|
int err_addr, dberror;
|
|
|
|
regmap_read(edac->ecc_mgr_map, S10_SYSMGR_ECC_INTSTAT_DERR_OFST,
|
|
&dberror);
|
|
regmap_write(edac->ecc_mgr_map, S10_SYSMGR_UE_VAL_OFST, dberror);
|
|
if (dberror & S10_DBE_IRQ_MASK) {
|
|
struct list_head *position;
|
|
struct altr_edac_device_dev *ed;
|
|
struct arm_smccc_res result;
|
|
|
|
/* Find the matching DBE in the list of devices */
|
|
list_for_each(position, &edac->a10_ecc_devices) {
|
|
ed = list_entry(position, struct altr_edac_device_dev,
|
|
next);
|
|
if (!(BIT(ed->db_irq) & dberror))
|
|
continue;
|
|
|
|
writel(ALTR_A10_ECC_DERRPENA,
|
|
ed->base + ALTR_A10_ECC_INTSTAT_OFST);
|
|
err_addr = readl(ed->base + ALTR_S10_DERR_ADDRA_OFST);
|
|
regmap_write(edac->ecc_mgr_map,
|
|
S10_SYSMGR_UE_ADDR_OFST, err_addr);
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"EDAC: [Fatal DBE on %s @ 0x%08X]\n",
|
|
ed->edac_dev_name, err_addr);
|
|
break;
|
|
}
|
|
/* Notify the System through SMC. Reboot delay = 1 second */
|
|
panic_timeout = 1;
|
|
arm_smccc_smc(INTEL_SIP_SMC_ECC_DBE, dberror, 0, 0, 0, 0,
|
|
0, 0, &result);
|
|
}
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
#endif
|
|
|
|
/****************** Arria 10 EDAC Probe Function *********************/
|
|
static int altr_edac_a10_probe(struct platform_device *pdev)
|
|
{
|
|
struct altr_arria10_edac *edac;
|
|
struct device_node *child;
|
|
|
|
edac = devm_kzalloc(&pdev->dev, sizeof(*edac), GFP_KERNEL);
|
|
if (!edac)
|
|
return -ENOMEM;
|
|
|
|
edac->dev = &pdev->dev;
|
|
platform_set_drvdata(pdev, edac);
|
|
INIT_LIST_HEAD(&edac->a10_ecc_devices);
|
|
|
|
edac->ecc_mgr_map =
|
|
altr_sysmgr_regmap_lookup_by_phandle(pdev->dev.of_node,
|
|
"altr,sysmgr-syscon");
|
|
|
|
if (IS_ERR(edac->ecc_mgr_map)) {
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"Unable to get syscon altr,sysmgr-syscon\n");
|
|
return PTR_ERR(edac->ecc_mgr_map);
|
|
}
|
|
|
|
edac->irq_chip.name = pdev->dev.of_node->name;
|
|
edac->irq_chip.irq_mask = a10_eccmgr_irq_mask;
|
|
edac->irq_chip.irq_unmask = a10_eccmgr_irq_unmask;
|
|
edac->domain = irq_domain_add_linear(pdev->dev.of_node, 64,
|
|
&a10_eccmgr_ic_ops, edac);
|
|
if (!edac->domain) {
|
|
dev_err(&pdev->dev, "Error adding IRQ domain\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
edac->sb_irq = platform_get_irq(pdev, 0);
|
|
if (edac->sb_irq < 0)
|
|
return edac->sb_irq;
|
|
|
|
irq_set_chained_handler_and_data(edac->sb_irq,
|
|
altr_edac_a10_irq_handler,
|
|
edac);
|
|
|
|
#ifdef CONFIG_64BIT
|
|
{
|
|
int dberror, err_addr;
|
|
|
|
edac->panic_notifier.notifier_call = s10_edac_dberr_handler;
|
|
atomic_notifier_chain_register(&panic_notifier_list,
|
|
&edac->panic_notifier);
|
|
|
|
/* Printout a message if uncorrectable error previously. */
|
|
regmap_read(edac->ecc_mgr_map, S10_SYSMGR_UE_VAL_OFST,
|
|
&dberror);
|
|
if (dberror) {
|
|
regmap_read(edac->ecc_mgr_map, S10_SYSMGR_UE_ADDR_OFST,
|
|
&err_addr);
|
|
edac_printk(KERN_ERR, EDAC_DEVICE,
|
|
"Previous Boot UE detected[0x%X] @ 0x%X\n",
|
|
dberror, err_addr);
|
|
/* Reset the sticky registers */
|
|
regmap_write(edac->ecc_mgr_map,
|
|
S10_SYSMGR_UE_VAL_OFST, 0);
|
|
regmap_write(edac->ecc_mgr_map,
|
|
S10_SYSMGR_UE_ADDR_OFST, 0);
|
|
}
|
|
}
|
|
#else
|
|
edac->db_irq = platform_get_irq(pdev, 1);
|
|
if (edac->db_irq < 0)
|
|
return edac->db_irq;
|
|
|
|
irq_set_chained_handler_and_data(edac->db_irq,
|
|
altr_edac_a10_irq_handler, edac);
|
|
#endif
|
|
|
|
for_each_child_of_node(pdev->dev.of_node, child) {
|
|
if (!of_device_is_available(child))
|
|
continue;
|
|
|
|
if (of_match_node(altr_edac_a10_device_of_match, child))
|
|
altr_edac_a10_device_add(edac, child);
|
|
|
|
#ifdef CONFIG_EDAC_ALTERA_SDRAM
|
|
else if (of_device_is_compatible(child, "altr,sdram-edac-a10"))
|
|
of_platform_populate(pdev->dev.of_node,
|
|
altr_sdram_ctrl_of_match,
|
|
NULL, &pdev->dev);
|
|
#endif
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id altr_edac_a10_of_match[] = {
|
|
{ .compatible = "altr,socfpga-a10-ecc-manager" },
|
|
{ .compatible = "altr,socfpga-s10-ecc-manager" },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, altr_edac_a10_of_match);
|
|
|
|
static struct platform_driver altr_edac_a10_driver = {
|
|
.probe = altr_edac_a10_probe,
|
|
.driver = {
|
|
.name = "socfpga_a10_ecc_manager",
|
|
.of_match_table = altr_edac_a10_of_match,
|
|
},
|
|
};
|
|
module_platform_driver(altr_edac_a10_driver);
|
|
|
|
MODULE_AUTHOR("Thor Thayer");
|
|
MODULE_DESCRIPTION("EDAC Driver for Altera Memories");
|