^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * SiFive Platform EDAC Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2018-2019 SiFive, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * This driver is partially based on octeon_edac-pc.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/edac.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "edac_module.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <soc/sifive/sifive_l2_cache.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define DRVNAME "sifive_edac"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct sifive_edac_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct notifier_block notifier;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct edac_device_ctl_info *dci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * EDAC error callback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * @event: non-zero if unrecoverable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) int ecc_err_event(struct notifier_block *this, unsigned long event, void *ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) const char *msg = (char *)ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct sifive_edac_priv *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) p = container_of(this, struct sifive_edac_priv, notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) if (event == SIFIVE_L2_ERR_TYPE_UE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) edac_device_handle_ue(p->dci, 0, 0, msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) else if (event == SIFIVE_L2_ERR_TYPE_CE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) edac_device_handle_ce(p->dci, 0, 0, msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) return NOTIFY_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static int ecc_register(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct sifive_edac_priv *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) p->notifier.notifier_call = ecc_err_event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) platform_set_drvdata(pdev, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) p->dci = edac_device_alloc_ctl_info(0, "sifive_ecc", 1, "sifive_ecc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 1, 1, NULL, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) edac_device_alloc_index());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (!p->dci)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) p->dci->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) p->dci->mod_name = "Sifive ECC Manager";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) p->dci->ctl_name = dev_name(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) p->dci->dev_name = dev_name(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (edac_device_add_device(p->dci)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) dev_err(p->dci->dev, "failed to register with EDAC core\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) register_sifive_l2_error_notifier(&p->notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) edac_device_free_ctl_info(p->dci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static int ecc_unregister(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct sifive_edac_priv *p = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) unregister_sifive_l2_error_notifier(&p->notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) edac_device_del_device(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) edac_device_free_ctl_info(p->dci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static struct platform_device *sifive_pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static int __init sifive_edac_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) sifive_pdev = platform_device_register_simple(DRVNAME, 0, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) if (IS_ERR(sifive_pdev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return PTR_ERR(sifive_pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) ret = ecc_register(sifive_pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) platform_device_unregister(sifive_pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static void __exit sifive_edac_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) ecc_unregister(sifive_pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) platform_device_unregister(sifive_pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) module_init(sifive_edac_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) module_exit(sifive_edac_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) MODULE_AUTHOR("SiFive Inc.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) MODULE_DESCRIPTION("SiFive platform EDAC driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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