9952f6918d
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 228 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528171438.107155473@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
143 lines
3.4 KiB
C
143 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2011-2012 Calxeda, Inc.
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/ctype.h>
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#include <linux/edac.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/of_platform.h>
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#include "edac_module.h"
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#define SR_CLR_SB_ECC_INTR 0x0
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#define SR_CLR_DB_ECC_INTR 0x4
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struct hb_l2_drvdata {
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void __iomem *base;
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int sb_irq;
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int db_irq;
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};
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static irqreturn_t highbank_l2_err_handler(int irq, void *dev_id)
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{
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struct edac_device_ctl_info *dci = dev_id;
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struct hb_l2_drvdata *drvdata = dci->pvt_info;
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if (irq == drvdata->sb_irq) {
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writel(1, drvdata->base + SR_CLR_SB_ECC_INTR);
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edac_device_handle_ce(dci, 0, 0, dci->ctl_name);
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}
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if (irq == drvdata->db_irq) {
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writel(1, drvdata->base + SR_CLR_DB_ECC_INTR);
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edac_device_handle_ue(dci, 0, 0, dci->ctl_name);
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}
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return IRQ_HANDLED;
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}
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static const struct of_device_id hb_l2_err_of_match[] = {
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{ .compatible = "calxeda,hb-sregs-l2-ecc", },
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{},
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};
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MODULE_DEVICE_TABLE(of, hb_l2_err_of_match);
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static int highbank_l2_err_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_device_ctl_info *dci;
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struct hb_l2_drvdata *drvdata;
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struct resource *r;
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int res = 0;
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dci = edac_device_alloc_ctl_info(sizeof(*drvdata), "cpu",
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1, "L", 1, 2, NULL, 0, 0);
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if (!dci)
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return -ENOMEM;
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drvdata = dci->pvt_info;
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dci->dev = &pdev->dev;
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platform_set_drvdata(pdev, dci);
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if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL))
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return -ENOMEM;
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r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!r) {
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dev_err(&pdev->dev, "Unable to get mem resource\n");
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res = -ENODEV;
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goto err;
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}
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if (!devm_request_mem_region(&pdev->dev, r->start,
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resource_size(r), dev_name(&pdev->dev))) {
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dev_err(&pdev->dev, "Error while requesting mem region\n");
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res = -EBUSY;
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goto err;
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}
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drvdata->base = devm_ioremap(&pdev->dev, r->start, resource_size(r));
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if (!drvdata->base) {
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dev_err(&pdev->dev, "Unable to map regs\n");
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res = -ENOMEM;
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goto err;
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}
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id = of_match_device(hb_l2_err_of_match, &pdev->dev);
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dci->mod_name = pdev->dev.driver->name;
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dci->ctl_name = id ? id->compatible : "unknown";
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dci->dev_name = dev_name(&pdev->dev);
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if (edac_device_add_device(dci))
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goto err;
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drvdata->db_irq = platform_get_irq(pdev, 0);
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res = devm_request_irq(&pdev->dev, drvdata->db_irq,
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highbank_l2_err_handler,
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0, dev_name(&pdev->dev), dci);
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if (res < 0)
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goto err2;
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drvdata->sb_irq = platform_get_irq(pdev, 1);
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res = devm_request_irq(&pdev->dev, drvdata->sb_irq,
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highbank_l2_err_handler,
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0, dev_name(&pdev->dev), dci);
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if (res < 0)
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goto err2;
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devres_close_group(&pdev->dev, NULL);
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return 0;
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err2:
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edac_device_del_device(&pdev->dev);
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err:
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devres_release_group(&pdev->dev, NULL);
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edac_device_free_ctl_info(dci);
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return res;
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}
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static int highbank_l2_err_remove(struct platform_device *pdev)
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{
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struct edac_device_ctl_info *dci = platform_get_drvdata(pdev);
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edac_device_del_device(&pdev->dev);
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edac_device_free_ctl_info(dci);
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return 0;
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}
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static struct platform_driver highbank_l2_edac_driver = {
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.probe = highbank_l2_err_probe,
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.remove = highbank_l2_err_remove,
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.driver = {
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.name = "hb_l2_edac",
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.of_match_table = hb_l2_err_of_match,
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},
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};
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module_platform_driver(highbank_l2_edac_driver);
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MODULE_LICENSE("GPL v2");
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MODULE_AUTHOR("Calxeda, Inc.");
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MODULE_DESCRIPTION("EDAC Driver for Calxeda Highbank L2 Cache");
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