2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 2009 Wind River Systems,
7 * written by Ralf Baechle <ralf@linux-mips.org>
9 #include <linux/module.h>
10 #include <linux/init.h>
11 #include <linux/slab.h>
13 #include <linux/edac.h>
15 #include <asm/octeon/cvmx.h>
17 #include "edac_core.h"
18 #include "edac_module.h"
19 #include "octeon_edac-lmc.h"
21 #define EDAC_MOD_STR "octeon"
23 static struct mem_ctl_info *mc_cavium;
24 static void *lmc_base;
26 static void co_lmc_poll(struct mem_ctl_info *mci)
28 union lmc_mem_cfg0 cfg0;
32 fadr.u64 = readq(lmc_base + LMC_FADR);
33 cfg0.u64 = readq(lmc_base + LMC_MEM_CFG0);
34 snprintf(msg, sizeof(msg), "DIMM %d rank %d bank %d row %d col %d",
35 fadr.fdimm, fadr.fbunk, fadr.fbank, fadr.frow, fadr.fcol);
38 edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, 0, 0, 0, -1, -1, -1,
41 cfg0.intr_sec_ena = -1; /* Done, re-arm */
45 edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, 0, 0, 0, -1, -1, -1,
47 cfg0.intr_ded_ena = -1; /* Done, re-arm */
50 writeq(cfg0.u64, lmc_base + LMC_MEM_CFG0);
53 static int __devinit co_lmc_probe(struct platform_device *pdev)
55 struct mem_ctl_info *mci;
56 union lmc_mem_cfg0 cfg0;
59 mci = edac_mc_alloc(0, 0, 0, 0);
63 mci->pdev = &pdev->dev;
64 platform_set_drvdata(pdev, mci);
65 mci->dev_name = dev_name(&pdev->dev);
67 mci->mod_name = "octeon-lmc";
68 mci->ctl_name = "co_lmc_err";
69 mci->edac_check = co_lmc_poll;
71 if (edac_mc_add_mc(mci) > 0) {
72 pr_err("%s: edac_mc_add_mc() failed\n", __func__);
76 cfg0.u64 = readq(lmc_base + LMC_MEM_CFG0); /* We poll */
77 cfg0.intr_ded_ena = 0;
78 cfg0.intr_sec_ena = 0;
79 writeq(cfg0.u64, lmc_base + LMC_MEM_CFG0);
91 static int co_lmc_remove(struct platform_device *pdev)
93 struct mem_ctl_info *mci = platform_get_drvdata(pdev);
96 edac_mc_del_mc(&pdev->dev);
102 static struct platform_driver co_lmc_driver = {
103 .probe = co_lmc_probe,
104 .remove = co_lmc_remove,
106 .name = "co_lmc_edac",
110 static int __init co_edac_init(void)
112 union lmc_mem_cfg0 cfg0;
115 lmc_base = ioremap_nocache(LMC_BASE, LMC_SIZE);
119 cfg0.u64 = readq(lmc_base + LMC_MEM_CFG0);
121 pr_info(EDAC_MOD_STR " LMC EDAC: ECC disabled, good bye\n");
126 ret = platform_driver_register(&co_lmc_driver);
128 pr_warning(EDAC_MOD_STR " LMC EDAC failed to register\n");
140 static void __exit co_edac_exit(void)
142 platform_driver_unregister(&co_lmc_driver);
146 module_init(co_edac_init);
147 module_exit(co_edac_exit);
149 MODULE_LICENSE("GPL");
150 MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");