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Since composable cache may be L3 cache if there is a L2 cache, we should use its original name composable cache to prevent confusion. There are some new lines were generated due to adding the compatible "sifive,ccache0" into ID table and indent requirement. The sifive L2 has been renamed to sifive CCACHE, EDAC driver needs to apply the change as well. Signed-off-by: Greentime Hu <greentime.hu@sifive.com> Signed-off-by: Zong Li <zong.li@sifive.com> Co-developed-by: Zong Li <zong.li@sifive.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20220913061817.22564-3-zong.li@sifive.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
120 lines
2.5 KiB
C
120 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* SiFive Platform EDAC Driver
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*
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* Copyright (C) 2018-2022 SiFive, Inc.
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*
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* This driver is partially based on octeon_edac-pc.c
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*
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*/
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#include <linux/edac.h>
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#include <linux/platform_device.h>
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#include "edac_module.h"
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#include <soc/sifive/sifive_ccache.h>
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#define DRVNAME "sifive_edac"
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struct sifive_edac_priv {
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struct notifier_block notifier;
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struct edac_device_ctl_info *dci;
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};
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/*
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* EDAC error callback
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*
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* @event: non-zero if unrecoverable.
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*/
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static
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int ecc_err_event(struct notifier_block *this, unsigned long event, void *ptr)
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{
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const char *msg = (char *)ptr;
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struct sifive_edac_priv *p;
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p = container_of(this, struct sifive_edac_priv, notifier);
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if (event == SIFIVE_CCACHE_ERR_TYPE_UE)
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edac_device_handle_ue(p->dci, 0, 0, msg);
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else if (event == SIFIVE_CCACHE_ERR_TYPE_CE)
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edac_device_handle_ce(p->dci, 0, 0, msg);
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return NOTIFY_OK;
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}
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static int ecc_register(struct platform_device *pdev)
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{
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struct sifive_edac_priv *p;
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p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
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if (!p)
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return -ENOMEM;
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p->notifier.notifier_call = ecc_err_event;
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platform_set_drvdata(pdev, p);
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p->dci = edac_device_alloc_ctl_info(0, "sifive_ecc", 1, "sifive_ecc",
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1, 1, NULL, 0,
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edac_device_alloc_index());
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if (!p->dci)
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return -ENOMEM;
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p->dci->dev = &pdev->dev;
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p->dci->mod_name = "Sifive ECC Manager";
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p->dci->ctl_name = dev_name(&pdev->dev);
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p->dci->dev_name = dev_name(&pdev->dev);
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if (edac_device_add_device(p->dci)) {
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dev_err(p->dci->dev, "failed to register with EDAC core\n");
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goto err;
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}
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register_sifive_ccache_error_notifier(&p->notifier);
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return 0;
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err:
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edac_device_free_ctl_info(p->dci);
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return -ENXIO;
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}
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static int ecc_unregister(struct platform_device *pdev)
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{
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struct sifive_edac_priv *p = platform_get_drvdata(pdev);
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unregister_sifive_ccache_error_notifier(&p->notifier);
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edac_device_del_device(&pdev->dev);
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edac_device_free_ctl_info(p->dci);
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return 0;
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}
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static struct platform_device *sifive_pdev;
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static int __init sifive_edac_init(void)
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{
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int ret;
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sifive_pdev = platform_device_register_simple(DRVNAME, 0, NULL, 0);
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if (IS_ERR(sifive_pdev))
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return PTR_ERR(sifive_pdev);
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ret = ecc_register(sifive_pdev);
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if (ret)
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platform_device_unregister(sifive_pdev);
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return ret;
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}
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static void __exit sifive_edac_exit(void)
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{
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ecc_unregister(sifive_pdev);
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platform_device_unregister(sifive_pdev);
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}
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module_init(sifive_edac_init);
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module_exit(sifive_edac_exit);
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MODULE_AUTHOR("SiFive Inc.");
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MODULE_DESCRIPTION("SiFive platform EDAC driver");
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MODULE_LICENSE("GPL v2");
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