^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * License. See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2012 Cavium, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 2009 Wind River Systems,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * written by Ralf Baechle <ralf@linux-mips.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/edac.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "edac_module.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <asm/octeon/cvmx.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/mipsregs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) extern int register_co_cache_error_notifier(struct notifier_block *nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) extern int unregister_co_cache_error_notifier(struct notifier_block *nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) extern unsigned long long cache_err_dcache[NR_CPUS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct co_cache_error {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct notifier_block notifier;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct edac_device_ctl_info *ed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * EDAC CPU cache error callback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * @event: non-zero if unrecoverable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static int co_cache_error_event(struct notifier_block *this,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) unsigned long event, void *ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct co_cache_error *p = container_of(this, struct co_cache_error,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) unsigned int core = cvmx_get_core_num();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) unsigned int cpu = smp_processor_id();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u64 icache_err = read_octeon_c0_icacheerr();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) u64 dcache_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) if (event) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) dcache_err = cache_err_dcache[core];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) cache_err_dcache[core] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) dcache_err = read_octeon_c0_dcacheerr();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (icache_err & 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) edac_device_printk(p->ed, KERN_ERR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) "CacheErr (Icache):%llx, core %d/cpu %d, cp0_errorepc == %lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) (unsigned long long)icache_err, core, cpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) read_c0_errorepc());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) write_octeon_c0_icacheerr(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) edac_device_handle_ce(p->ed, cpu, 1, "icache");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (dcache_err & 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) edac_device_printk(p->ed, KERN_ERR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) "CacheErr (Dcache):%llx, core %d/cpu %d, cp0_errorepc == %lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) (unsigned long long)dcache_err, core, cpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) read_c0_errorepc());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if (event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) edac_device_handle_ue(p->ed, cpu, 0, "dcache");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) edac_device_handle_ce(p->ed, cpu, 0, "dcache");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /* Clear the error indication */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (OCTEON_IS_OCTEON2())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) write_octeon_c0_dcacheerr(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) write_octeon_c0_dcacheerr(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return NOTIFY_STOP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static int co_cache_error_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct co_cache_error *p = devm_kzalloc(&pdev->dev, sizeof(*p),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) p->notifier.notifier_call = co_cache_error_event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) platform_set_drvdata(pdev, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) p->ed = edac_device_alloc_ctl_info(0, "cpu", num_possible_cpus(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) "cache", 2, 0, NULL, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) edac_device_alloc_index());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (!p->ed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) p->ed->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) p->ed->dev_name = dev_name(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) p->ed->mod_name = "octeon-cpu";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) p->ed->ctl_name = "cache";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (edac_device_add_device(p->ed)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) pr_err("%s: edac_device_add_device() failed\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) register_co_cache_error_notifier(&p->notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) err1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) edac_device_free_ctl_info(p->ed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static int co_cache_error_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct co_cache_error *p = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) unregister_co_cache_error_notifier(&p->notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) edac_device_del_device(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) edac_device_free_ctl_info(p->ed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static struct platform_driver co_cache_error_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) .probe = co_cache_error_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .remove = co_cache_error_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .name = "octeon_pc_edac",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) module_platform_driver(co_cache_error_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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