[mirror_ubuntu-bionic-kernel.git] / drivers / edac / octeon_edac-lmc.c

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2009 Wind River Systems,
 *   written by Ralf Baechle <ralf@linux-mips.org>
 *
 * Copyright (c) 2013 by Cisco Systems, Inc.
 * All rights reserved.
 */
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/edac.h>
#include <linux/ctype.h>

#include <asm/octeon/octeon.h>
#include <asm/octeon/cvmx-lmcx-defs.h>

#include "edac_module.h"

#define OCTEON_MAX_MC 4

#define to_mci(k) container_of(k, struct mem_ctl_info, dev)

struct octeon_lmc_pvt {
	unsigned long inject;
	unsigned long error_type;
	unsigned long dimm;
	unsigned long rank;
	unsigned long bank;
	unsigned long row;
	unsigned long col;
};

static void octeon_lmc_edac_poll(struct mem_ctl_info *mci)
{
	union cvmx_lmcx_mem_cfg0 cfg0;
	bool do_clear = false;
	char msg[64];

	cfg0.u64 = cvmx_read_csr(CVMX_LMCX_MEM_CFG0(mci->mc_idx));
	if (cfg0.s.sec_err || cfg0.s.ded_err) {
		union cvmx_lmcx_fadr fadr;
		fadr.u64 = cvmx_read_csr(CVMX_LMCX_FADR(mci->mc_idx));
		snprintf(msg, sizeof(msg),
			 "DIMM %d rank %d bank %d row %d col %d",
			 fadr.cn30xx.fdimm, fadr.cn30xx.fbunk,
			 fadr.cn30xx.fbank, fadr.cn30xx.frow, fadr.cn30xx.fcol);
	}

	if (cfg0.s.sec_err) {
		edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, 0, 0, 0,
				     -1, -1, -1, msg, "");
		cfg0.s.sec_err = -1;	/* Done, re-arm */
		do_clear = true;
	}

	if (cfg0.s.ded_err) {
		edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, 0, 0, 0,
				     -1, -1, -1, msg, "");
		cfg0.s.ded_err = -1;	/* Done, re-arm */
		do_clear = true;
	}
	if (do_clear)
		cvmx_write_csr(CVMX_LMCX_MEM_CFG0(mci->mc_idx), cfg0.u64);
}

static void octeon_lmc_edac_poll_o2(struct mem_ctl_info *mci)
{
	struct octeon_lmc_pvt *pvt = mci->pvt_info;
	union cvmx_lmcx_int int_reg;
	bool do_clear = false;
	char msg[64];

	if (!pvt->inject)
		int_reg.u64 = cvmx_read_csr(CVMX_LMCX_INT(mci->mc_idx));
	else {
		int_reg.u64 = 0;
		if (pvt->error_type == 1)
			int_reg.s.sec_err = 1;
		if (pvt->error_type == 2)
			int_reg.s.ded_err = 1;
	}

	if (int_reg.s.sec_err || int_reg.s.ded_err) {
		union cvmx_lmcx_fadr fadr;
		if (likely(!pvt->inject))
			fadr.u64 = cvmx_read_csr(CVMX_LMCX_FADR(mci->mc_idx));
		else {
			fadr.cn61xx.fdimm = pvt->dimm;
			fadr.cn61xx.fbunk = pvt->rank;
			fadr.cn61xx.fbank = pvt->bank;
			fadr.cn61xx.frow = pvt->row;
			fadr.cn61xx.fcol = pvt->col;
		}
		snprintf(msg, sizeof(msg),
			 "DIMM %d rank %d bank %d row %d col %d",
			 fadr.cn61xx.fdimm, fadr.cn61xx.fbunk,
			 fadr.cn61xx.fbank, fadr.cn61xx.frow, fadr.cn61xx.fcol);
	}

	if (int_reg.s.sec_err) {
		edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, 0, 0, 0,
				     -1, -1, -1, msg, "");
		int_reg.s.sec_err = -1;	/* Done, re-arm */
		do_clear = true;
	}

	if (int_reg.s.ded_err) {
		edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, 0, 0, 0,
				     -1, -1, -1, msg, "");
		int_reg.s.ded_err = -1;	/* Done, re-arm */
		do_clear = true;
	}

	if (do_clear) {
		if (likely(!pvt->inject))
			cvmx_write_csr(CVMX_LMCX_INT(mci->mc_idx), int_reg.u64);
		else
			pvt->inject = 0;
	}
}

/************************ MC SYSFS parts ***********************************/

/* Only a couple naming differences per template, so very similar */
#define TEMPLATE_SHOW(reg)						\
static ssize_t octeon_mc_inject_##reg##_show(struct device *dev,	\
			       struct device_attribute *attr,		\
			       char *data)				\
{									\
	struct mem_ctl_info *mci = to_mci(dev);				\
	struct octeon_lmc_pvt *pvt = mci->pvt_info;			\
	return sprintf(data, "%016llu\n", (u64)pvt->reg);		\
}

#define TEMPLATE_STORE(reg)						\
static ssize_t octeon_mc_inject_##reg##_store(struct device *dev,	\
			       struct device_attribute *attr,		\
			       const char *data, size_t count)		\
{									\
	struct mem_ctl_info *mci = to_mci(dev);				\
	struct octeon_lmc_pvt *pvt = mci->pvt_info;			\
	if (isdigit(*data)) {						\
		if (!kstrtoul(data, 0, &pvt->reg))			\
			return count;					\
	}								\
	return 0;							\
}

TEMPLATE_SHOW(inject);
TEMPLATE_STORE(inject);
TEMPLATE_SHOW(dimm);
TEMPLATE_STORE(dimm);
TEMPLATE_SHOW(bank);
TEMPLATE_STORE(bank);
TEMPLATE_SHOW(rank);
TEMPLATE_STORE(rank);
TEMPLATE_SHOW(row);
TEMPLATE_STORE(row);
TEMPLATE_SHOW(col);
TEMPLATE_STORE(col);

static ssize_t octeon_mc_inject_error_type_store(struct device *dev,
					  struct device_attribute *attr,
					  const char *data,
					  size_t count)
{
	struct mem_ctl_info *mci = to_mci(dev);
	struct octeon_lmc_pvt *pvt = mci->pvt_info;

	if (!strncmp(data, "single", 6))
		pvt->error_type = 1;
	else if (!strncmp(data, "double", 6))
		pvt->error_type = 2;

	return count;
}

static ssize_t octeon_mc_inject_error_type_show(struct device *dev,
					 struct device_attribute *attr,
					 char *data)
{
	struct mem_ctl_info *mci = to_mci(dev);
	struct octeon_lmc_pvt *pvt = mci->pvt_info;
	if (pvt->error_type == 1)
		return sprintf(data, "single");
	else if (pvt->error_type == 2)
		return sprintf(data, "double");

	return 0;
}

static DEVICE_ATTR(inject, S_IRUGO | S_IWUSR,
		   octeon_mc_inject_inject_show, octeon_mc_inject_inject_store);
static DEVICE_ATTR(error_type, S_IRUGO | S_IWUSR,
		   octeon_mc_inject_error_type_show, octeon_mc_inject_error_type_store);
static DEVICE_ATTR(dimm, S_IRUGO | S_IWUSR,
		   octeon_mc_inject_dimm_show, octeon_mc_inject_dimm_store);
static DEVICE_ATTR(rank, S_IRUGO | S_IWUSR,
		   octeon_mc_inject_rank_show, octeon_mc_inject_rank_store);
static DEVICE_ATTR(bank, S_IRUGO | S_IWUSR,
		   octeon_mc_inject_bank_show, octeon_mc_inject_bank_store);
static DEVICE_ATTR(row, S_IRUGO | S_IWUSR,
		   octeon_mc_inject_row_show, octeon_mc_inject_row_store);
static DEVICE_ATTR(col, S_IRUGO | S_IWUSR,
		   octeon_mc_inject_col_show, octeon_mc_inject_col_store);

static struct attribute *octeon_dev_attrs[] = {
	&dev_attr_inject.attr,
	&dev_attr_error_type.attr,
	&dev_attr_dimm.attr,
	&dev_attr_rank.attr,
	&dev_attr_bank.attr,
	&dev_attr_row.attr,
	&dev_attr_col.attr,
	NULL
};

ATTRIBUTE_GROUPS(octeon_dev);

static int octeon_lmc_edac_probe(struct platform_device *pdev)
{
	struct mem_ctl_info *mci;
	struct edac_mc_layer layers[1];
	int mc = pdev->id;

	opstate_init();

	layers[0].type = EDAC_MC_LAYER_CHANNEL;
	layers[0].size = 1;
	layers[0].is_virt_csrow = false;

	if (OCTEON_IS_OCTEON1PLUS()) {
		union cvmx_lmcx_mem_cfg0 cfg0;

		cfg0.u64 = cvmx_read_csr(CVMX_LMCX_MEM_CFG0(0));
		if (!cfg0.s.ecc_ena) {
			dev_info(&pdev->dev, "Disabled (ECC not enabled)\n");
			return 0;
		}

		mci = edac_mc_alloc(mc, ARRAY_SIZE(layers), layers, sizeof(struct octeon_lmc_pvt));
		if (!mci)
			return -ENXIO;

		mci->pdev = &pdev->dev;
		mci->dev_name = dev_name(&pdev->dev);

		mci->mod_name = "octeon-lmc";
		mci->ctl_name = "octeon-lmc-err";
		mci->edac_check = octeon_lmc_edac_poll;

		if (edac_mc_add_mc_with_groups(mci, octeon_dev_groups)) {
			dev_err(&pdev->dev, "edac_mc_add_mc() failed\n");
			edac_mc_free(mci);
			return -ENXIO;
		}

		cfg0.u64 = cvmx_read_csr(CVMX_LMCX_MEM_CFG0(mc));
		cfg0.s.intr_ded_ena = 0;	/* We poll */
		cfg0.s.intr_sec_ena = 0;
		cvmx_write_csr(CVMX_LMCX_MEM_CFG0(mc), cfg0.u64);
	} else {
		/* OCTEON II */
		union cvmx_lmcx_int_en en;
		union cvmx_lmcx_config config;

		config.u64 = cvmx_read_csr(CVMX_LMCX_CONFIG(0));
		if (!config.s.ecc_ena) {
			dev_info(&pdev->dev, "Disabled (ECC not enabled)\n");
			return 0;
		}

		mci = edac_mc_alloc(mc, ARRAY_SIZE(layers), layers, sizeof(struct octeon_lmc_pvt));
		if (!mci)
			return -ENXIO;

		mci->pdev = &pdev->dev;
		mci->dev_name = dev_name(&pdev->dev);

		mci->mod_name = "octeon-lmc";
		mci->ctl_name = "co_lmc_err";
		mci->edac_check = octeon_lmc_edac_poll_o2;

		if (edac_mc_add_mc_with_groups(mci, octeon_dev_groups)) {
			dev_err(&pdev->dev, "edac_mc_add_mc() failed\n");
			edac_mc_free(mci);
			return -ENXIO;
		}

		en.u64 = cvmx_read_csr(CVMX_LMCX_MEM_CFG0(mc));
		en.s.intr_ded_ena = 0;	/* We poll */
		en.s.intr_sec_ena = 0;
		cvmx_write_csr(CVMX_LMCX_MEM_CFG0(mc), en.u64);
	}
	platform_set_drvdata(pdev, mci);

	return 0;
}

static int octeon_lmc_edac_remove(struct platform_device *pdev)
{
	struct mem_ctl_info *mci = platform_get_drvdata(pdev);

	edac_mc_del_mc(&pdev->dev);
	edac_mc_free(mci);
	return 0;
}

static struct platform_driver octeon_lmc_edac_driver = {
	.probe = octeon_lmc_edac_probe,
	.remove = octeon_lmc_edac_remove,
	.driver = {
		   .name = "octeon_lmc_edac",
	}
};
module_platform_driver(octeon_lmc_edac_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
Commit	Line	Data
f65aad41 RB	1	/*
	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
	4	* for more details.
	5	*
	6	* Copyright (C) 2009 Wind River Systems,
	7	* written by Ralf Baechle <ralf@linux-mips.org>
1bc021e8 DW	8	*
	9	* Copyright (c) 2013 by Cisco Systems, Inc.
	10	* All rights reserved.
f65aad41 RB	11	*/
	12	#include <linux/module.h>
	13	#include <linux/init.h>
	14	#include <linux/slab.h>
	15	#include <linux/io.h>
	16	#include <linux/edac.h>
1bc021e8	17	#include <linux/ctype.h>
f65aad41	18
e1ced097 DD	19	#include <asm/octeon/octeon.h>
e1ced097 DD	20	#include <asm/octeon/cvmx-lmcx-defs.h>
f65aad41	21
f65aad41	22	#include "edac_module.h"
f65aad41	23
e1ced097	24	#define OCTEON_MAX_MC 4
f65aad41	25
1bc021e8 DW	26	#define to_mci(k) container_of(k, struct mem_ctl_info, dev)
	27
	28	struct octeon_lmc_pvt {
	29	unsigned long inject;
	30	unsigned long error_type;
	31	unsigned long dimm;
	32	unsigned long rank;
	33	unsigned long bank;
	34	unsigned long row;
	35	unsigned long col;
	36	};
	37
e1ced097	38	static void octeon_lmc_edac_poll(struct mem_ctl_info *mci)
f65aad41	39	{
e1ced097 DD	40	union cvmx_lmcx_mem_cfg0 cfg0;
e1ced097 DD	41	bool do_clear = false;
f65aad41 RB	42	char msg[64];
f65aad41 RB	43
e1ced097 DD	44	cfg0.u64 = cvmx_read_csr(CVMX_LMCX_MEM_CFG0(mci->mc_idx));
	45	if (cfg0.s.sec_err \|\| cfg0.s.ded_err) {
	46	union cvmx_lmcx_fadr fadr;
	47	fadr.u64 = cvmx_read_csr(CVMX_LMCX_FADR(mci->mc_idx));
	48	snprintf(msg, sizeof(msg),
	49	"DIMM %d rank %d bank %d row %d col %d",
	50	fadr.cn30xx.fdimm, fadr.cn30xx.fbunk,
	51	fadr.cn30xx.fbank, fadr.cn30xx.frow, fadr.cn30xx.fcol);
f65aad41 RB	52	}
f65aad41 RB	53
e1ced097 DD	54	if (cfg0.s.sec_err) {
	55	edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, 0, 0, 0,
	56	-1, -1, -1, msg, "");
	57	cfg0.s.sec_err = -1; /* Done, re-arm */
	58	do_clear = true;
f65aad41 RB	59	}
f65aad41 RB	60
e1ced097 DD	61	if (cfg0.s.ded_err) {
	62	edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, 0, 0, 0,
	63	-1, -1, -1, msg, "");
	64	cfg0.s.ded_err = -1; /* Done, re-arm */
	65	do_clear = true;
	66	}
	67	if (do_clear)
	68	cvmx_write_csr(CVMX_LMCX_MEM_CFG0(mci->mc_idx), cfg0.u64);
f65aad41 RB	69	}
f65aad41 RB	70
e1ced097	71	static void octeon_lmc_edac_poll_o2(struct mem_ctl_info *mci)
f65aad41	72	{
1bc021e8	73	struct octeon_lmc_pvt *pvt = mci->pvt_info;
e1ced097 DD	74	union cvmx_lmcx_int int_reg;
	75	bool do_clear = false;
	76	char msg[64];
f65aad41	77
1bc021e8 DW	78	if (!pvt->inject)
	79	int_reg.u64 = cvmx_read_csr(CVMX_LMCX_INT(mci->mc_idx));
	80	else {
57824048	81	int_reg.u64 = 0;
1bc021e8 DW	82	if (pvt->error_type == 1)
	83	int_reg.s.sec_err = 1;
	84	if (pvt->error_type == 2)
	85	int_reg.s.ded_err = 1;
	86	}
	87
e1ced097 DD	88	if (int_reg.s.sec_err \|\| int_reg.s.ded_err) {
e1ced097 DD	89	union cvmx_lmcx_fadr fadr;
1bc021e8 DW	90	if (likely(!pvt->inject))
	91	fadr.u64 = cvmx_read_csr(CVMX_LMCX_FADR(mci->mc_idx));
	92	else {
	93	fadr.cn61xx.fdimm = pvt->dimm;
	94	fadr.cn61xx.fbunk = pvt->rank;
	95	fadr.cn61xx.fbank = pvt->bank;
	96	fadr.cn61xx.frow = pvt->row;
	97	fadr.cn61xx.fcol = pvt->col;
	98	}
e1ced097 DD	99	snprintf(msg, sizeof(msg),
	100	"DIMM %d rank %d bank %d row %d col %d",
	101	fadr.cn61xx.fdimm, fadr.cn61xx.fbunk,
	102	fadr.cn61xx.fbank, fadr.cn61xx.frow, fadr.cn61xx.fcol);
	103	}
f65aad41	104
e1ced097 DD	105	if (int_reg.s.sec_err) {
	106	edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, 0, 0, 0,
	107	-1, -1, -1, msg, "");
	108	int_reg.s.sec_err = -1; /* Done, re-arm */
	109	do_clear = true;
f65aad41 RB	110	}
f65aad41 RB	111
e1ced097 DD	112	if (int_reg.s.ded_err) {
	113	edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, 0, 0, 0,
	114	-1, -1, -1, msg, "");
	115	int_reg.s.ded_err = -1; /* Done, re-arm */
	116	do_clear = true;
	117	}
1bc021e8 DW	118
	119	if (do_clear) {
	120	if (likely(!pvt->inject))
	121	cvmx_write_csr(CVMX_LMCX_INT(mci->mc_idx), int_reg.u64);
	122	else
	123	pvt->inject = 0;
	124	}
	125	}
	126
	127	/********************** MC SYSFS parts *********************************/
	128
	129	/* Only a couple naming differences per template, so very similar */
	130	#define TEMPLATE_SHOW(reg) \
	131	static ssize_t octeon_mc_inject_##reg##_show(struct device *dev, \
	132	struct device_attribute *attr, \
	133	char *data) \
	134	{ \
	135	struct mem_ctl_info *mci = to_mci(dev); \
	136	struct octeon_lmc_pvt *pvt = mci->pvt_info; \
	137	return sprintf(data, "%016llu\n", (u64)pvt->reg); \
	138	}
	139
	140	#define TEMPLATE_STORE(reg) \
	141	static ssize_t octeon_mc_inject_##reg##_store(struct device *dev, \
	142	struct device_attribute *attr, \
	143	const char *data, size_t count) \
	144	{ \
	145	struct mem_ctl_info *mci = to_mci(dev); \
	146	struct octeon_lmc_pvt *pvt = mci->pvt_info; \
	147	if (isdigit(*data)) { \
	148	if (!kstrtoul(data, 0, &pvt->reg)) \
	149	return count; \
	150	} \
	151	return 0; \
	152	}
	153
	154	TEMPLATE_SHOW(inject);
	155	TEMPLATE_STORE(inject);
	156	TEMPLATE_SHOW(dimm);
	157	TEMPLATE_STORE(dimm);
	158	TEMPLATE_SHOW(bank);
	159	TEMPLATE_STORE(bank);
	160	TEMPLATE_SHOW(rank);
	161	TEMPLATE_STORE(rank);
	162	TEMPLATE_SHOW(row);
	163	TEMPLATE_STORE(row);
	164	TEMPLATE_SHOW(col);
	165	TEMPLATE_STORE(col);
	166
	167	static ssize_t octeon_mc_inject_error_type_store(struct device *dev,
	168	struct device_attribute *attr,
	169	const char *data,
	170	size_t count)
	171	{
	172	struct mem_ctl_info *mci = to_mci(dev);
	173	struct octeon_lmc_pvt *pvt = mci->pvt_info;
	174
	175	if (!strncmp(data, "single", 6))
	176	pvt->error_type = 1;
	177	else if (!strncmp(data, "double", 6))
	178	pvt->error_type = 2;
	179
	180	return count;
	181	}
182
183	static ssize_t octeon_mc_inject_error_type_show(struct device *dev,
184	struct device_attribute *attr,
185	char *data)
186	{
187	struct mem_ctl_info *mci = to_mci(dev);
188	struct octeon_lmc_pvt *pvt = mci->pvt_info;
189	if (pvt->error_type == 1)
190	return sprintf(data, "single");
191	else if (pvt->error_type == 2)
192	return sprintf(data, "double");
193
194	return 0;
195	}
196
197	static DEVICE_ATTR(inject, S_IRUGO \| S_IWUSR,
198	octeon_mc_inject_inject_show, octeon_mc_inject_inject_store);
199	static DEVICE_ATTR(error_type, S_IRUGO \| S_IWUSR,
200	octeon_mc_inject_error_type_show, octeon_mc_inject_error_type_store);
201	static DEVICE_ATTR(dimm, S_IRUGO \| S_IWUSR,
202	octeon_mc_inject_dimm_show, octeon_mc_inject_dimm_store);
203	static DEVICE_ATTR(rank, S_IRUGO \| S_IWUSR,
204	octeon_mc_inject_rank_show, octeon_mc_inject_rank_store);
205	static DEVICE_ATTR(bank, S_IRUGO \| S_IWUSR,
206	octeon_mc_inject_bank_show, octeon_mc_inject_bank_store);
207	static DEVICE_ATTR(row, S_IRUGO \| S_IWUSR,
208	octeon_mc_inject_row_show, octeon_mc_inject_row_store);
209	static DEVICE_ATTR(col, S_IRUGO \| S_IWUSR,
210	octeon_mc_inject_col_show, octeon_mc_inject_col_store);
211
1bf06a0d TI	212	static struct attribute *octeon_dev_attrs[] = {
	213	&dev_attr_inject.attr,
	214	&dev_attr_error_type.attr,
	215	&dev_attr_dimm.attr,
	216	&dev_attr_rank.attr,
	217	&dev_attr_bank.attr,
	218	&dev_attr_row.attr,
	219	&dev_attr_col.attr,
	220	NULL
	221	};
1bc021e8	222
1bf06a0d	223	ATTRIBUTE_GROUPS(octeon_dev);
f65aad41	224
9b3c6e85	225	static int octeon_lmc_edac_probe(struct platform_device *pdev)
e1ced097 DD	226	{
	227	struct mem_ctl_info *mci;
	228	struct edac_mc_layer layers[1];
	229	int mc = pdev->id;
	230
5331de05 DW	231	opstate_init();
5331de05 DW	232
e1ced097 DD	233	layers[0].type = EDAC_MC_LAYER_CHANNEL;
	234	layers[0].size = 1;
	235	layers[0].is_virt_csrow = false;
	236
75a15a78	237	if (OCTEON_IS_OCTEON1PLUS()) {
e1ced097 DD	238	union cvmx_lmcx_mem_cfg0 cfg0;
	239
	240	cfg0.u64 = cvmx_read_csr(CVMX_LMCX_MEM_CFG0(0));
	241	if (!cfg0.s.ecc_ena) {
	242	dev_info(&pdev->dev, "Disabled (ECC not enabled)\n");
	243	return 0;
	244	}
	245
1bc021e8	246	mci = edac_mc_alloc(mc, ARRAY_SIZE(layers), layers, sizeof(struct octeon_lmc_pvt));
e1ced097 DD	247	if (!mci)
	248	return -ENXIO;
	249
	250	mci->pdev = &pdev->dev;
	251	mci->dev_name = dev_name(&pdev->dev);
	252
	253	mci->mod_name = "octeon-lmc";
	254	mci->ctl_name = "octeon-lmc-err";
	255	mci->edac_check = octeon_lmc_edac_poll;
	256
1bf06a0d	257	if (edac_mc_add_mc_with_groups(mci, octeon_dev_groups)) {
e1ced097 DD	258	dev_err(&pdev->dev, "edac_mc_add_mc() failed\n");
	259	edac_mc_free(mci);
	260	return -ENXIO;
	261	}
	262
	263	cfg0.u64 = cvmx_read_csr(CVMX_LMCX_MEM_CFG0(mc));
	264	cfg0.s.intr_ded_ena = 0; /* We poll */
	265	cfg0.s.intr_sec_ena = 0;
	266	cvmx_write_csr(CVMX_LMCX_MEM_CFG0(mc), cfg0.u64);
	267	} else {
	268	/* OCTEON II */
	269	union cvmx_lmcx_int_en en;
	270	union cvmx_lmcx_config config;
	271
	272	config.u64 = cvmx_read_csr(CVMX_LMCX_CONFIG(0));
	273	if (!config.s.ecc_ena) {
	274	dev_info(&pdev->dev, "Disabled (ECC not enabled)\n");
	275	return 0;
	276	}
	277
1bc021e8	278	mci = edac_mc_alloc(mc, ARRAY_SIZE(layers), layers, sizeof(struct octeon_lmc_pvt));
e1ced097 DD	279	if (!mci)
	280	return -ENXIO;
	281
	282	mci->pdev = &pdev->dev;
	283	mci->dev_name = dev_name(&pdev->dev);
	284
	285	mci->mod_name = "octeon-lmc";
	286	mci->ctl_name = "co_lmc_err";
	287	mci->edac_check = octeon_lmc_edac_poll_o2;
	288
1bf06a0d	289	if (edac_mc_add_mc_with_groups(mci, octeon_dev_groups)) {
e1ced097 DD	290	dev_err(&pdev->dev, "edac_mc_add_mc() failed\n");
	291	edac_mc_free(mci);
	292	return -ENXIO;
	293	}
	294
	295	en.u64 = cvmx_read_csr(CVMX_LMCX_MEM_CFG0(mc));
	296	en.s.intr_ded_ena = 0; /* We poll */
	297	en.s.intr_sec_ena = 0;
	298	cvmx_write_csr(CVMX_LMCX_MEM_CFG0(mc), en.u64);
	299	}
	300	platform_set_drvdata(pdev, mci);
f65aad41 RB	301
f65aad41 RB	302	return 0;
f65aad41 RB	303	}
f65aad41 RB	304
e1ced097	305	static int octeon_lmc_edac_remove(struct platform_device *pdev)
f65aad41 RB	306	{
	307	struct mem_ctl_info *mci = platform_get_drvdata(pdev);
	308
f65aad41 RB	309	edac_mc_del_mc(&pdev->dev);
f65aad41 RB	310	edac_mc_free(mci);
f65aad41 RB	311	return 0;
	312	}
	313
e1ced097 DD	314	static struct platform_driver octeon_lmc_edac_driver = {
	315	.probe = octeon_lmc_edac_probe,
	316	.remove = octeon_lmc_edac_remove,
f65aad41	317	.driver = {
e1ced097	318	.name = "octeon_lmc_edac",
f65aad41 RB	319	}
f65aad41 RB	320	};
e1ced097	321	module_platform_driver(octeon_lmc_edac_driver);
f65aad41 RB	322
	323	MODULE_LICENSE("GPL");
	324	MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");