drivers/edac/pasemi_edac.c - linux - Git at Google

 /*
  * Copyright (C) 2006-2007 PA Semi, Inc
  *
  * Author: Egor Martovetsky <egor@pasemi.com>
  * Maintained by: Olof Johansson <olof@lixom.net>
  *
  * Driver for the PWRficient onchip memory controllers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */


 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/pci_ids.h>
 #include <linux/edac.h>
 #include "edac_core.h"

 #define MODULE_NAME "pasemi_edac"

 #define MCCFG_MCEN				0x300
 #define   MCCFG_MCEN_MMC_EN			0x00000001
 #define MCCFG_ERRCOR				0x388
 #define   MCCFG_ERRCOR_RNK_FAIL_DET_EN		0x00000100
 #define   MCCFG_ERRCOR_ECC_GEN_EN		0x00000010
 #define   MCCFG_ERRCOR_ECC_CRR_EN		0x00000001
 #define MCCFG_SCRUB				0x384
 #define   MCCFG_SCRUB_RGLR_SCRB_EN		0x00000001
 #define MCDEBUG_ERRCTL1				0x728
 #define   MCDEBUG_ERRCTL1_RFL_LOG_EN		0x00080000
 #define   MCDEBUG_ERRCTL1_MBE_LOG_EN		0x00040000
 #define   MCDEBUG_ERRCTL1_SBE_LOG_EN		0x00020000
 #define MCDEBUG_ERRSTA				0x730
 #define   MCDEBUG_ERRSTA_RFL_STATUS		0x00000004
 #define   MCDEBUG_ERRSTA_MBE_STATUS		0x00000002
 #define   MCDEBUG_ERRSTA_SBE_STATUS		0x00000001
 #define MCDEBUG_ERRCNT1				0x734
 #define   MCDEBUG_ERRCNT1_SBE_CNT_OVRFLO	0x00000080
 #define MCDEBUG_ERRLOG1A			0x738
 #define   MCDEBUG_ERRLOG1A_MERR_TYPE_M		0x30000000
 #define   MCDEBUG_ERRLOG1A_MERR_TYPE_NONE	0x00000000
 #define   MCDEBUG_ERRLOG1A_MERR_TYPE_SBE	0x10000000
 #define   MCDEBUG_ERRLOG1A_MERR_TYPE_MBE	0x20000000
 #define   MCDEBUG_ERRLOG1A_MERR_TYPE_RFL	0x30000000
 #define   MCDEBUG_ERRLOG1A_MERR_BA_M		0x00700000
 #define   MCDEBUG_ERRLOG1A_MERR_BA_S		20
 #define   MCDEBUG_ERRLOG1A_MERR_CS_M		0x00070000
 #define   MCDEBUG_ERRLOG1A_MERR_CS_S		16
 #define   MCDEBUG_ERRLOG1A_SYNDROME_M		0x0000ffff
 #define MCDRAM_RANKCFG				0x114
 #define   MCDRAM_RANKCFG_EN			0x00000001
 #define   MCDRAM_RANKCFG_TYPE_SIZE_M		0x000001c0
 #define   MCDRAM_RANKCFG_TYPE_SIZE_S		6

 #define PASEMI_EDAC_NR_CSROWS			8
 #define PASEMI_EDAC_NR_CHANS			1
 #define PASEMI_EDAC_ERROR_GRAIN			64

 static int last_page_in_mmc;
 static int system_mmc_id;


 static u32 pasemi_edac_get_error_info(struct mem_ctl_info *mci)
 {
 	struct pci_dev *pdev = to_pci_dev(mci->pdev);
 	u32 tmp;

 	pci_read_config_dword(pdev, MCDEBUG_ERRSTA,
 			      &tmp);

 	tmp &= (MCDEBUG_ERRSTA_RFL_STATUS | MCDEBUG_ERRSTA_MBE_STATUS
 		| MCDEBUG_ERRSTA_SBE_STATUS);

 	if (tmp) {
 		if (tmp & MCDEBUG_ERRSTA_SBE_STATUS)
 			pci_write_config_dword(pdev, MCDEBUG_ERRCNT1,
 					       MCDEBUG_ERRCNT1_SBE_CNT_OVRFLO);
 		pci_write_config_dword(pdev, MCDEBUG_ERRSTA, tmp);
 	}

 	return tmp;
 }

 static void pasemi_edac_process_error_info(struct mem_ctl_info *mci, u32 errsta)
 {
 	struct pci_dev *pdev = to_pci_dev(mci->pdev);
 	u32 errlog1a;
 	u32 cs;

 	if (!errsta)
 		return;

 	pci_read_config_dword(pdev, MCDEBUG_ERRLOG1A, &errlog1a);

 	cs = (errlog1a & MCDEBUG_ERRLOG1A_MERR_CS_M) >>
 		MCDEBUG_ERRLOG1A_MERR_CS_S;

 	/* uncorrectable/multi-bit errors */
 	if (errsta & (MCDEBUG_ERRSTA_MBE_STATUS |
 		      MCDEBUG_ERRSTA_RFL_STATUS)) {
 		edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1,
 				     mci->csrows[cs]->first_page, 0, 0,
 				     cs, 0, -1, mci->ctl_name, "");
 	}

 	/* correctable/single-bit errors */
 	if (errsta & MCDEBUG_ERRSTA_SBE_STATUS)
 		edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1,
 				     mci->csrows[cs]->first_page, 0, 0,
 				     cs, 0, -1, mci->ctl_name, "");
 }

 static void pasemi_edac_check(struct mem_ctl_info *mci)
 {
 	u32 errsta;

 	errsta = pasemi_edac_get_error_info(mci);
 	if (errsta)
 		pasemi_edac_process_error_info(mci, errsta);
 }

 static int pasemi_edac_init_csrows(struct mem_ctl_info *mci,
 				   struct pci_dev *pdev,
 				   enum edac_type edac_mode)
 {
 	struct csrow_info *csrow;
 	struct dimm_info *dimm;
 	u32 rankcfg;
 	int index;

 	for (index = 0; index < mci->nr_csrows; index++) {
 		csrow = mci->csrows[index];
 		dimm = csrow->channels[0]->dimm;

 		pci_read_config_dword(pdev,
 				      MCDRAM_RANKCFG + (index * 12),
 				      &rankcfg);

 		if (!(rankcfg & MCDRAM_RANKCFG_EN))
 			continue;

 		switch ((rankcfg & MCDRAM_RANKCFG_TYPE_SIZE_M) >>
 			MCDRAM_RANKCFG_TYPE_SIZE_S) {
 		case 0:
 			dimm->nr_pages = 128 << (20 - PAGE_SHIFT);
 			break;
 		case 1:
 			dimm->nr_pages = 256 << (20 - PAGE_SHIFT);
 			break;
 		case 2:
 		case 3:
 			dimm->nr_pages = 512 << (20 - PAGE_SHIFT);
 			break;
 		case 4:
 			dimm->nr_pages = 1024 << (20 - PAGE_SHIFT);
 			break;
 		case 5:
 			dimm->nr_pages = 2048 << (20 - PAGE_SHIFT);
 			break;
 		default:
 			edac_mc_printk(mci, KERN_ERR,
 				"Unrecognized Rank Config. rankcfg=%u\n",
 				rankcfg);
 			return -EINVAL;
 		}

 		csrow->first_page = last_page_in_mmc;
 		csrow->last_page = csrow->first_page + dimm->nr_pages - 1;
 		last_page_in_mmc += dimm->nr_pages;
 		csrow->page_mask = 0;
 		dimm->grain = PASEMI_EDAC_ERROR_GRAIN;
 		dimm->mtype = MEM_DDR;
 		dimm->dtype = DEV_UNKNOWN;
 		dimm->edac_mode = edac_mode;
 	}
 	return 0;
 }

 static int pasemi_edac_probe(struct pci_dev *pdev,
 			     const struct pci_device_id *ent)
 {
 	struct mem_ctl_info *mci = NULL;
 	struct edac_mc_layer layers[2];
 	u32 errctl1, errcor, scrub, mcen;

 	pci_read_config_dword(pdev, MCCFG_MCEN, &mcen);
 	if (!(mcen & MCCFG_MCEN_MMC_EN))
 		return -ENODEV;

 	/*
 	 * We should think about enabling other error detection later on
 	 */

 	pci_read_config_dword(pdev, MCDEBUG_ERRCTL1, &errctl1);
 	errctl1 |= MCDEBUG_ERRCTL1_SBE_LOG_EN |
 		MCDEBUG_ERRCTL1_MBE_LOG_EN |
 		MCDEBUG_ERRCTL1_RFL_LOG_EN;
 	pci_write_config_dword(pdev, MCDEBUG_ERRCTL1, errctl1);

 	layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
 	layers[0].size = PASEMI_EDAC_NR_CSROWS;
 	layers[0].is_virt_csrow = true;
 	layers[1].type = EDAC_MC_LAYER_CHANNEL;
 	layers[1].size = PASEMI_EDAC_NR_CHANS;
 	layers[1].is_virt_csrow = false;
 	mci = edac_mc_alloc(system_mmc_id++, ARRAY_SIZE(layers), layers,
 			    0);
 	if (mci == NULL)
 		return -ENOMEM;

 	pci_read_config_dword(pdev, MCCFG_ERRCOR, &errcor);
 	errcor |= MCCFG_ERRCOR_RNK_FAIL_DET_EN |
 		MCCFG_ERRCOR_ECC_GEN_EN |
 		MCCFG_ERRCOR_ECC_CRR_EN;

 	mci->pdev = &pdev->dev;
 	mci->mtype_cap = MEM_FLAG_DDR | MEM_FLAG_RDDR;
 	mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_EC | EDAC_FLAG_SECDED;
 	mci->edac_cap = (errcor & MCCFG_ERRCOR_ECC_GEN_EN) ?
 		((errcor & MCCFG_ERRCOR_ECC_CRR_EN) ?
 		 (EDAC_FLAG_EC | EDAC_FLAG_SECDED) : EDAC_FLAG_EC) :
 		EDAC_FLAG_NONE;
 	mci->mod_name = MODULE_NAME;
 	mci->dev_name = pci_name(pdev);
 	mci->ctl_name = "pasemi,pwrficient-mc";
 	mci->edac_check = pasemi_edac_check;
 	mci->ctl_page_to_phys = NULL;
 	pci_read_config_dword(pdev, MCCFG_SCRUB, &scrub);
 	mci->scrub_cap = SCRUB_FLAG_HW_PROG | SCRUB_FLAG_HW_SRC;
 	mci->scrub_mode =
 		((errcor & MCCFG_ERRCOR_ECC_CRR_EN) ? SCRUB_FLAG_HW_SRC : 0) |
 		((scrub & MCCFG_SCRUB_RGLR_SCRB_EN) ? SCRUB_FLAG_HW_PROG : 0);

 	if (pasemi_edac_init_csrows(mci, pdev,
 				    (mci->edac_cap & EDAC_FLAG_SECDED) ?
 				    EDAC_SECDED :
 				    ((mci->edac_cap & EDAC_FLAG_EC) ?
 				     EDAC_EC : EDAC_NONE)))
 		goto fail;

 	/*
 	 * Clear status
 	 */
 	pasemi_edac_get_error_info(mci);

 	if (edac_mc_add_mc(mci))
 		goto fail;

 	/* get this far and it's successful */
 	return 0;

 fail:
 	edac_mc_free(mci);
 	return -ENODEV;
 }

 static void pasemi_edac_remove(struct pci_dev *pdev)
 {
 	struct mem_ctl_info *mci = edac_mc_del_mc(&pdev->dev);

 	if (!mci)
 		return;

 	edac_mc_free(mci);
 }


 static const struct pci_device_id pasemi_edac_pci_tbl[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_PASEMI, 0xa00a) },
 	{ }
 };

 MODULE_DEVICE_TABLE(pci, pasemi_edac_pci_tbl);

 static struct pci_driver pasemi_edac_driver = {
 	.name = MODULE_NAME,
 	.probe = pasemi_edac_probe,
 	.remove = pasemi_edac_remove,
 	.id_table = pasemi_edac_pci_tbl,
 };

 static int __init pasemi_edac_init(void)
 {
        /* Ensure that the OPSTATE is set correctly for POLL or NMI */
        opstate_init();

 	return pci_register_driver(&pasemi_edac_driver);
 }

 static void __exit pasemi_edac_exit(void)
 {
 	pci_unregister_driver(&pasemi_edac_driver);
 }

 module_init(pasemi_edac_init);
 module_exit(pasemi_edac_exit);

 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Egor Martovetsky <egor@pasemi.com>");
 MODULE_DESCRIPTION("MC support for PA Semi PWRficient memory controller");
 module_param(edac_op_state, int, 0444);
 MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI");
	/*
	* Copyright (C) 2006-2007 PA Semi, Inc
	*
	* Author: Egor Martovetsky <egor@pasemi.com>
	* Maintained by: Olof Johansson <olof@lixom.net>
	*
	* Driver for the PWRficient onchip memory controllers
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 as
	* published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/


	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/pci.h>
	#include <linux/pci_ids.h>
	#include <linux/edac.h>
	#include "edac_core.h"

	#define MODULE_NAME "pasemi_edac"

	#define MCCFG_MCEN 0x300
	#define MCCFG_MCEN_MMC_EN 0x00000001
	#define MCCFG_ERRCOR 0x388
	#define MCCFG_ERRCOR_RNK_FAIL_DET_EN 0x00000100
	#define MCCFG_ERRCOR_ECC_GEN_EN 0x00000010
	#define MCCFG_ERRCOR_ECC_CRR_EN 0x00000001
	#define MCCFG_SCRUB 0x384
	#define MCCFG_SCRUB_RGLR_SCRB_EN 0x00000001
	#define MCDEBUG_ERRCTL1 0x728
	#define MCDEBUG_ERRCTL1_RFL_LOG_EN 0x00080000
	#define MCDEBUG_ERRCTL1_MBE_LOG_EN 0x00040000
	#define MCDEBUG_ERRCTL1_SBE_LOG_EN 0x00020000
	#define MCDEBUG_ERRSTA 0x730
	#define MCDEBUG_ERRSTA_RFL_STATUS 0x00000004
	#define MCDEBUG_ERRSTA_MBE_STATUS 0x00000002
	#define MCDEBUG_ERRSTA_SBE_STATUS 0x00000001
	#define MCDEBUG_ERRCNT1 0x734
	#define MCDEBUG_ERRCNT1_SBE_CNT_OVRFLO 0x00000080
	#define MCDEBUG_ERRLOG1A 0x738
	#define MCDEBUG_ERRLOG1A_MERR_TYPE_M 0x30000000
	#define MCDEBUG_ERRLOG1A_MERR_TYPE_NONE 0x00000000
	#define MCDEBUG_ERRLOG1A_MERR_TYPE_SBE 0x10000000
	#define MCDEBUG_ERRLOG1A_MERR_TYPE_MBE 0x20000000
	#define MCDEBUG_ERRLOG1A_MERR_TYPE_RFL 0x30000000
	#define MCDEBUG_ERRLOG1A_MERR_BA_M 0x00700000
	#define MCDEBUG_ERRLOG1A_MERR_BA_S 20
	#define MCDEBUG_ERRLOG1A_MERR_CS_M 0x00070000
	#define MCDEBUG_ERRLOG1A_MERR_CS_S 16
	#define MCDEBUG_ERRLOG1A_SYNDROME_M 0x0000ffff
	#define MCDRAM_RANKCFG 0x114
	#define MCDRAM_RANKCFG_EN 0x00000001
	#define MCDRAM_RANKCFG_TYPE_SIZE_M 0x000001c0
	#define MCDRAM_RANKCFG_TYPE_SIZE_S 6

	#define PASEMI_EDAC_NR_CSROWS 8
	#define PASEMI_EDAC_NR_CHANS 1
	#define PASEMI_EDAC_ERROR_GRAIN 64

	static int last_page_in_mmc;
	static int system_mmc_id;


	static u32 pasemi_edac_get_error_info(struct mem_ctl_info *mci)
	{
	struct pci_dev *pdev = to_pci_dev(mci->pdev);
	u32 tmp;

	pci_read_config_dword(pdev, MCDEBUG_ERRSTA,
	&tmp);

	tmp &= (MCDEBUG_ERRSTA_RFL_STATUS \| MCDEBUG_ERRSTA_MBE_STATUS
	\| MCDEBUG_ERRSTA_SBE_STATUS);

	if (tmp) {
	if (tmp & MCDEBUG_ERRSTA_SBE_STATUS)
	pci_write_config_dword(pdev, MCDEBUG_ERRCNT1,
	MCDEBUG_ERRCNT1_SBE_CNT_OVRFLO);
	pci_write_config_dword(pdev, MCDEBUG_ERRSTA, tmp);
	}

	return tmp;
	}

	static void pasemi_edac_process_error_info(struct mem_ctl_info *mci, u32 errsta)
	{
	struct pci_dev *pdev = to_pci_dev(mci->pdev);
	u32 errlog1a;
	u32 cs;

	if (!errsta)
	return;

	pci_read_config_dword(pdev, MCDEBUG_ERRLOG1A, &errlog1a);

	cs = (errlog1a & MCDEBUG_ERRLOG1A_MERR_CS_M) >>
	MCDEBUG_ERRLOG1A_MERR_CS_S;

	/* uncorrectable/multi-bit errors */
	if (errsta & (MCDEBUG_ERRSTA_MBE_STATUS \|
	MCDEBUG_ERRSTA_RFL_STATUS)) {
	edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1,
	mci->csrows[cs]->first_page, 0, 0,
	cs, 0, -1, mci->ctl_name, "");
	}

	/* correctable/single-bit errors */
	if (errsta & MCDEBUG_ERRSTA_SBE_STATUS)
	edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1,
	mci->csrows[cs]->first_page, 0, 0,
	cs, 0, -1, mci->ctl_name, "");
	}

	static void pasemi_edac_check(struct mem_ctl_info *mci)
	{
	u32 errsta;

	errsta = pasemi_edac_get_error_info(mci);
	if (errsta)
	pasemi_edac_process_error_info(mci, errsta);
	}

	static int pasemi_edac_init_csrows(struct mem_ctl_info *mci,
	struct pci_dev *pdev,
	enum edac_type edac_mode)
	{
	struct csrow_info *csrow;
	struct dimm_info *dimm;
	u32 rankcfg;
	int index;

	for (index = 0; index < mci->nr_csrows; index++) {
	csrow = mci->csrows[index];
	dimm = csrow->channels[0]->dimm;

	pci_read_config_dword(pdev,
	MCDRAM_RANKCFG + (index * 12),
	&rankcfg);

	if (!(rankcfg & MCDRAM_RANKCFG_EN))
	continue;

	switch ((rankcfg & MCDRAM_RANKCFG_TYPE_SIZE_M) >>
	MCDRAM_RANKCFG_TYPE_SIZE_S) {
	case 0:
	dimm->nr_pages = 128 << (20 - PAGE_SHIFT);
	break;
	case 1:
	dimm->nr_pages = 256 << (20 - PAGE_SHIFT);
	break;
	case 2:
	case 3:
	dimm->nr_pages = 512 << (20 - PAGE_SHIFT);
	break;
	case 4:
	dimm->nr_pages = 1024 << (20 - PAGE_SHIFT);
	break;
	case 5:
	dimm->nr_pages = 2048 << (20 - PAGE_SHIFT);
	break;
	default:
	edac_mc_printk(mci, KERN_ERR,
	"Unrecognized Rank Config. rankcfg=%u\n",
	rankcfg);
	return -EINVAL;
	}

	csrow->first_page = last_page_in_mmc;
	csrow->last_page = csrow->first_page + dimm->nr_pages - 1;
	last_page_in_mmc += dimm->nr_pages;
	csrow->page_mask = 0;
	dimm->grain = PASEMI_EDAC_ERROR_GRAIN;
	dimm->mtype = MEM_DDR;
	dimm->dtype = DEV_UNKNOWN;
	dimm->edac_mode = edac_mode;
	}
	return 0;
	}

	static int pasemi_edac_probe(struct pci_dev *pdev,
	const struct pci_device_id *ent)
	{
	struct mem_ctl_info *mci = NULL;
	struct edac_mc_layer layers[2];
	u32 errctl1, errcor, scrub, mcen;

	pci_read_config_dword(pdev, MCCFG_MCEN, &mcen);
	if (!(mcen & MCCFG_MCEN_MMC_EN))
	return -ENODEV;

	/*
	* We should think about enabling other error detection later on
	*/

	pci_read_config_dword(pdev, MCDEBUG_ERRCTL1, &errctl1);
	errctl1 \|= MCDEBUG_ERRCTL1_SBE_LOG_EN \|
	MCDEBUG_ERRCTL1_MBE_LOG_EN \|
	MCDEBUG_ERRCTL1_RFL_LOG_EN;
	pci_write_config_dword(pdev, MCDEBUG_ERRCTL1, errctl1);

	layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
	layers[0].size = PASEMI_EDAC_NR_CSROWS;
	layers[0].is_virt_csrow = true;
	layers[1].type = EDAC_MC_LAYER_CHANNEL;
	layers[1].size = PASEMI_EDAC_NR_CHANS;
	layers[1].is_virt_csrow = false;
	mci = edac_mc_alloc(system_mmc_id++, ARRAY_SIZE(layers), layers,
	0);
	if (mci == NULL)
	return -ENOMEM;

	pci_read_config_dword(pdev, MCCFG_ERRCOR, &errcor);
	errcor \|= MCCFG_ERRCOR_RNK_FAIL_DET_EN \|
	MCCFG_ERRCOR_ECC_GEN_EN \|
	MCCFG_ERRCOR_ECC_CRR_EN;

	mci->pdev = &pdev->dev;
	mci->mtype_cap = MEM_FLAG_DDR \| MEM_FLAG_RDDR;
	mci->edac_ctl_cap = EDAC_FLAG_NONE \| EDAC_FLAG_EC \| EDAC_FLAG_SECDED;
	mci->edac_cap = (errcor & MCCFG_ERRCOR_ECC_GEN_EN) ?
	((errcor & MCCFG_ERRCOR_ECC_CRR_EN) ?
	(EDAC_FLAG_EC \| EDAC_FLAG_SECDED) : EDAC_FLAG_EC) :
	EDAC_FLAG_NONE;
	mci->mod_name = MODULE_NAME;
	mci->dev_name = pci_name(pdev);
	mci->ctl_name = "pasemi,pwrficient-mc";
	mci->edac_check = pasemi_edac_check;
	mci->ctl_page_to_phys = NULL;
	pci_read_config_dword(pdev, MCCFG_SCRUB, &scrub);
	mci->scrub_cap = SCRUB_FLAG_HW_PROG \| SCRUB_FLAG_HW_SRC;
	mci->scrub_mode =
	((errcor & MCCFG_ERRCOR_ECC_CRR_EN) ? SCRUB_FLAG_HW_SRC : 0) \|
	((scrub & MCCFG_SCRUB_RGLR_SCRB_EN) ? SCRUB_FLAG_HW_PROG : 0);

	if (pasemi_edac_init_csrows(mci, pdev,
	(mci->edac_cap & EDAC_FLAG_SECDED) ?
	EDAC_SECDED :
	((mci->edac_cap & EDAC_FLAG_EC) ?
	EDAC_EC : EDAC_NONE)))
	goto fail;

	/*
	* Clear status
	*/
	pasemi_edac_get_error_info(mci);

	if (edac_mc_add_mc(mci))
	goto fail;

	/* get this far and it's successful */
	return 0;

	fail:
	edac_mc_free(mci);
	return -ENODEV;
	}

	static void pasemi_edac_remove(struct pci_dev *pdev)
	{
	struct mem_ctl_info *mci = edac_mc_del_mc(&pdev->dev);

	if (!mci)
	return;

	edac_mc_free(mci);
	}


	static const struct pci_device_id pasemi_edac_pci_tbl[] = {
	{ PCI_DEVICE(PCI_VENDOR_ID_PASEMI, 0xa00a) },
	{ }
	};

	MODULE_DEVICE_TABLE(pci, pasemi_edac_pci_tbl);

	static struct pci_driver pasemi_edac_driver = {
	.name = MODULE_NAME,
	.probe = pasemi_edac_probe,
	.remove = pasemi_edac_remove,
	.id_table = pasemi_edac_pci_tbl,
	};

	static int __init pasemi_edac_init(void)
	{
	/* Ensure that the OPSTATE is set correctly for POLL or NMI */
	opstate_init();

	return pci_register_driver(&pasemi_edac_driver);
	}

	static void __exit pasemi_edac_exit(void)
	{
	pci_unregister_driver(&pasemi_edac_driver);
	}

	module_init(pasemi_edac_init);
	module_exit(pasemi_edac_exit);

	MODULE_LICENSE("GPL");
	MODULE_AUTHOR("Egor Martovetsky <egor@pasemi.com>");
	MODULE_DESCRIPTION("MC support for PA Semi PWRficient memory controller");
	module_param(edac_op_state, int, 0444);
	MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI");