2 * GHES/EDAC Linux driver
4 * This file may be distributed under the terms of the GNU General Public
7 * Copyright (c) 2013 by Mauro Carvalho Chehab <mchehab@redhat.com>
9 * Red Hat Inc. http://www.redhat.com
12 #include <acpi/ghes.h>
13 #include <linux/edac.h>
14 #include "edac_core.h"
16 #define GHES_PFX "ghes_edac: "
17 #define GHES_EDAC_REVISION " Ver: 1.0.0"
19 struct ghes_edac_pvt {
20 struct list_head list;
22 struct mem_ctl_info *mci;
25 static LIST_HEAD(ghes_reglist);
26 static DEFINE_MUTEX(ghes_edac_lock);
27 static int ghes_edac_mc_num;
29 void ghes_edac_report_mem_error(struct ghes *ghes, int sev,
30 struct cper_sec_mem_err *mem_err)
33 EXPORT_SYMBOL_GPL(ghes_edac_report_mem_error);
35 int ghes_edac_register(struct ghes *ghes, struct device *dev)
38 struct mem_ctl_info *mci;
39 struct edac_mc_layer layers[1];
40 struct csrow_info *csrow;
41 struct dimm_info *dimm;
42 struct ghes_edac_pvt *pvt;
44 layers[0].type = EDAC_MC_LAYER_ALL_MEM;
46 layers[0].is_virt_csrow = true;
49 * We need to serialize edac_mc_alloc() and edac_mc_add_mc(),
50 * to avoid duplicated memory controller numbers
52 mutex_lock(&ghes_edac_lock);
53 mci = edac_mc_alloc(ghes_edac_mc_num, ARRAY_SIZE(layers), layers,
56 pr_info(GHES_PFX "Can't allocate memory for EDAC data\n");
57 mutex_unlock(&ghes_edac_lock);
62 memset(pvt, 0, sizeof(*pvt));
63 list_add_tail(&pvt->list, &ghes_reglist);
68 mci->mtype_cap = MEM_FLAG_EMPTY;
69 mci->edac_ctl_cap = EDAC_FLAG_NONE;
70 mci->edac_cap = EDAC_FLAG_NONE;
71 mci->mod_name = "ghes_edac.c";
72 mci->mod_ver = GHES_EDAC_REVISION;
73 mci->ctl_name = "ghes_edac";
74 mci->dev_name = "ghes";
76 csrow = mci->csrows[0];
77 dimm = csrow->channels[0]->dimm;
79 /* FIXME: FAKE DATA */
80 dimm->nr_pages = 1000;
82 dimm->mtype = MEM_UNKNOWN;
83 dimm->dtype = DEV_UNKNOWN;
84 dimm->edac_mode = EDAC_SECDED;
86 rc = edac_mc_add_mc(mci);
88 pr_info(GHES_PFX "Can't register at EDAC core\n");
90 mutex_unlock(&ghes_edac_lock);
95 mutex_unlock(&ghes_edac_lock);
98 EXPORT_SYMBOL_GPL(ghes_edac_register);
100 void ghes_edac_unregister(struct ghes *ghes)
102 struct mem_ctl_info *mci;
103 struct ghes_edac_pvt *pvt;
105 list_for_each_entry(pvt, &ghes_reglist, list) {
106 if (ghes == pvt->ghes) {
108 edac_mc_del_mc(mci->pdev);
110 list_del(&pvt->list);
114 EXPORT_SYMBOL_GPL(ghes_edac_unregister);