[PATCH] EDAC: drivers for Intel i82860, i82875 (0d88a10e) · Commits · 方亚芬 / raspberrypi_linux

drivers/edac/i82860_edac.c

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+299 −0

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		/*
		* Intel 82860 Memory Controller kernel module
		* (C) 2005 Red Hat (http://www.redhat.com)
		* This file may be distributed under the terms of the
		* GNU General Public License.
		*
		* Written by Ben Woodard <woodard@redhat.com>
		* shamelessly copied from and based upon the edac_i82875 driver
		* by Thayne Harbaugh of Linux Networx. (http://lnxi.com)
		*/


		#include <linux/config.h>
		#include <linux/module.h>
		#include <linux/init.h>
		#include <linux/pci.h>
		#include <linux/pci_ids.h>
		#include <linux/slab.h>
		#include "edac_mc.h"


		#ifndef PCI_DEVICE_ID_INTEL_82860_0
		#define PCI_DEVICE_ID_INTEL_82860_0 0x2531
		#endif /* PCI_DEVICE_ID_INTEL_82860_0 */

		#define I82860_MCHCFG 0x50
		#define I82860_GBA 0x60
		#define I82860_GBA_MASK 0x7FF
		#define I82860_GBA_SHIFT 24
		#define I82860_ERRSTS 0xC8
		#define I82860_EAP 0xE4
		#define I82860_DERRCTL_STS 0xE2

		enum i82860_chips {
		I82860 = 0,
		};

		struct i82860_dev_info {
		const char *ctl_name;
		};

		struct i82860_error_info {
		u16 errsts;
		u32 eap;
		u16 derrsyn;
		u16 errsts2;
		};

		static const struct i82860_dev_info i82860_devs[] = {
		[I82860] = {
		.ctl_name = "i82860"},
		};

		static struct pci_dev mci_pdev = NULL; / init dev: in case that AGP code
		has already registered driver */

		static int i82860_registered = 1;

		static void i82860_get_error_info (struct mem_ctl_info *mci,
		struct i82860_error_info *info)
		{
		/*
		* This is a mess because there is no atomic way to read all the
		* registers at once and the registers can transition from CE being
		* overwritten by UE.
		*/
		pci_read_config_word(mci->pdev, I82860_ERRSTS, &info->errsts);
		pci_read_config_dword(mci->pdev, I82860_EAP, &info->eap);
		pci_read_config_word(mci->pdev, I82860_DERRCTL_STS, &info->derrsyn);
		pci_read_config_word(mci->pdev, I82860_ERRSTS, &info->errsts2);

		pci_write_bits16(mci->pdev, I82860_ERRSTS, 0x0003, 0x0003);

		/*
		* If the error is the same for both reads then the first set of reads
		* is valid. If there is a change then there is a CE no info and the
		* second set of reads is valid and should be UE info.
		*/
		if (!(info->errsts2 & 0x0003))
		return;
		if ((info->errsts ^ info->errsts2) & 0x0003) {
		pci_read_config_dword(mci->pdev, I82860_EAP, &info->eap);
		pci_read_config_word(mci->pdev, I82860_DERRCTL_STS,
		&info->derrsyn);
		}
		}

		static int i82860_process_error_info (struct mem_ctl_info *mci,
		struct i82860_error_info *info, int handle_errors)
		{
		int row;

		if (!(info->errsts2 & 0x0003))
		return 0;

		if (!handle_errors)
		return 1;

		if ((info->errsts ^ info->errsts2) & 0x0003) {
		edac_mc_handle_ce_no_info(mci, "UE overwrote CE");
		info->errsts = info->errsts2;
		}

		info->eap >>= PAGE_SHIFT;
		row = edac_mc_find_csrow_by_page(mci, info->eap);

		if (info->errsts & 0x0002)
		edac_mc_handle_ue(mci, info->eap, 0, row, "i82860 UE");
		else
		edac_mc_handle_ce(mci, info->eap, 0, info->derrsyn, row,
		0, "i82860 UE");

		return 1;
		}

		static void i82860_check(struct mem_ctl_info *mci)
		{
		struct i82860_error_info info;

		debugf1("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__);
		i82860_get_error_info(mci, &info);
		i82860_process_error_info(mci, &info, 1);
		}

		static int i82860_probe1(struct pci_dev *pdev, int dev_idx)
		{
		int rc = -ENODEV;
		int index;
		struct mem_ctl_info *mci = NULL;
		unsigned long last_cumul_size;

		u16 mchcfg_ddim; /* DRAM Data Integrity Mode 0=none,2=edac */

		/* RDRAM has channels but these don't map onto the abstractions that
		edac uses.
		The device groups from the GRA registers seem to map reasonably
		well onto the notion of a chip select row.
		There are 16 GRA registers and since the name is associated with
		the channel and the GRA registers map to physical devices so we are
		going to make 1 channel for group.
		*/
		mci = edac_mc_alloc(0, 16, 1);
		if (!mci)
		return -ENOMEM;

		debugf3("MC: " __FILE__ ": %s(): init mci\n", __func__);

		mci->pdev = pdev;
		mci->mtype_cap = MEM_FLAG_DDR;


		mci->edac_ctl_cap = EDAC_FLAG_NONE \| EDAC_FLAG_SECDED;
		/* I"m not sure about this but I think that all RDRAM is SECDED */
		mci->edac_cap = EDAC_FLAG_SECDED;
		/* adjust FLAGS */

		mci->mod_name = BS_MOD_STR;
		mci->mod_ver = "$Revision: 1.1.2.6 $";
		mci->ctl_name = i82860_devs[dev_idx].ctl_name;
		mci->edac_check = i82860_check;
		mci->ctl_page_to_phys = NULL;

		pci_read_config_word(mci->pdev, I82860_MCHCFG, &mchcfg_ddim);
		mchcfg_ddim = mchcfg_ddim & 0x180;

		/*
		* The group row boundary (GRA) reg values are boundary address
		* for each DRAM row with a granularity of 16MB. GRA regs are
		* cumulative; therefore GRA15 will contain the total memory contained
		* in all eight rows.
		*/
		for (last_cumul_size = index = 0; index < mci->nr_csrows; index++) {
		u16 value;
		u32 cumul_size;
		struct csrow_info *csrow = &mci->csrows[index];

		pci_read_config_word(mci->pdev, I82860_GBA + index * 2,
		&value);

		cumul_size = (value & I82860_GBA_MASK) <<
		(I82860_GBA_SHIFT - PAGE_SHIFT);
		debugf3("MC: " __FILE__ ": %s(): (%d) cumul_size 0x%x\n",
		__func__, index, cumul_size);
		if (cumul_size == last_cumul_size)
		continue; /* not populated */

		csrow->first_page = last_cumul_size;
		csrow->last_page = cumul_size - 1;
		csrow->nr_pages = cumul_size - last_cumul_size;
		last_cumul_size = cumul_size;
		csrow->grain = 1 << 12; /* I82860_EAP has 4KiB reolution */
		csrow->mtype = MEM_RMBS;
		csrow->dtype = DEV_UNKNOWN;
		csrow->edac_mode = mchcfg_ddim ? EDAC_SECDED : EDAC_NONE;
		}

		/* clear counters */
		pci_write_bits16(mci->pdev, I82860_ERRSTS, 0x0003, 0x0003);

		if (edac_mc_add_mc(mci)) {
		debugf3("MC: " __FILE__
		": %s(): failed edac_mc_add_mc()\n",
		__func__);
		edac_mc_free(mci);
		} else {
		/* get this far and it's successful */
		debugf3("MC: " __FILE__ ": %s(): success\n", __func__);
		rc = 0;
		}
		return rc;
		}

		/* returns count (>= 0), or negative on error */
		static int __devinit i82860_init_one(struct pci_dev *pdev,
		const struct pci_device_id *ent)
		{
		int rc;

		debugf0("MC: " __FILE__ ": %s()\n", __func__);

		printk(KERN_INFO "i82860 init one\n");
		if(pci_enable_device(pdev) < 0)
		return -EIO;
		rc = i82860_probe1(pdev, ent->driver_data);
		if(rc == 0)
		mci_pdev = pci_dev_get(pdev);
		return rc;
		}

		static void __devexit i82860_remove_one(struct pci_dev *pdev)
		{
		struct mem_ctl_info *mci;

		debugf0(__FILE__ ": %s()\n", __func__);

		mci = edac_mc_find_mci_by_pdev(pdev);
		if ((mci != NULL) && (edac_mc_del_mc(mci) == 0))
		edac_mc_free(mci);
		}

		static const struct pci_device_id i82860_pci_tbl[] __devinitdata = {
		{PCI_VEND_DEV(INTEL, 82860_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
		I82860},
		{0,} /* 0 terminated list. */
		};

		MODULE_DEVICE_TABLE(pci, i82860_pci_tbl);

		static struct pci_driver i82860_driver = {
		.name = BS_MOD_STR,
		.probe = i82860_init_one,
		.remove = __devexit_p(i82860_remove_one),
		.id_table = i82860_pci_tbl,
		};

		int __init i82860_init(void)
		{
		int pci_rc;

		debugf3("MC: " __FILE__ ": %s()\n", __func__);
		if ((pci_rc = pci_register_driver(&i82860_driver)) < 0)
		return pci_rc;

		if (!mci_pdev) {
		i82860_registered = 0;
		mci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
		PCI_DEVICE_ID_INTEL_82860_0, NULL);
		if (mci_pdev == NULL) {
		debugf0("860 pci_get_device fail\n");
		return -ENODEV;
		}
		pci_rc = i82860_init_one(mci_pdev, i82860_pci_tbl);
		if (pci_rc < 0) {
		debugf0("860 init fail\n");
		pci_dev_put(mci_pdev);
		return -ENODEV;
		}
		}
		return 0;
		}

		static void __exit i82860_exit(void)
		{
		debugf3("MC: " __FILE__ ": %s()\n", __func__);

		pci_unregister_driver(&i82860_driver);
		if (!i82860_registered) {
		i82860_remove_one(mci_pdev);
		pci_dev_put(mci_pdev);
		}
		}

		module_init(i82860_init);
		module_exit(i82860_exit);

		MODULE_LICENSE("GPL");
		MODULE_AUTHOR
		("Red Hat Inc. (http://www.redhat.com.com) Ben Woodard <woodard@redhat.com>");
		MODULE_DESCRIPTION("ECC support for Intel 82860 memory hub controllers");

drivers/edac/i82875p_edac.c

0 → 100644

+532 −0

Original line number	Diff line number	Diff line
		/*
		* Intel D82875P Memory Controller kernel module
		* (C) 2003 Linux Networx (http://lnxi.com)
		* This file may be distributed under the terms of the
		* GNU General Public License.
		*
		* Written by Thayne Harbaugh
		* Contributors:
		* Wang Zhenyu at intel.com
		*
		* $Id: edac_i82875p.c,v 1.5.2.11 2005/10/05 00:43:44 dsp_llnl Exp $
		*
		* Note: E7210 appears same as D82875P - zhenyu.z.wang at intel.com
		*/


		#include <linux/config.h>
		#include <linux/module.h>
		#include <linux/init.h>

		#include <linux/pci.h>
		#include <linux/pci_ids.h>

		#include <linux/slab.h>

		#include "edac_mc.h"


		#ifndef PCI_DEVICE_ID_INTEL_82875_0
		#define PCI_DEVICE_ID_INTEL_82875_0 0x2578
		#endif /* PCI_DEVICE_ID_INTEL_82875_0 */

		#ifndef PCI_DEVICE_ID_INTEL_82875_6
		#define PCI_DEVICE_ID_INTEL_82875_6 0x257e
		#endif /* PCI_DEVICE_ID_INTEL_82875_6 */


		/* four csrows in dual channel, eight in single channel */
		#define I82875P_NR_CSROWS(nr_chans) (8/(nr_chans))


		/* Intel 82875p register addresses - device 0 function 0 - DRAM Controller */
		#define I82875P_EAP 0x58 /* Error Address Pointer (32b)
		*
		* 31:12 block address
		* 11:0 reserved
		*/

		#define I82875P_DERRSYN 0x5c /* DRAM Error Syndrome (8b)
		*
		* 7:0 DRAM ECC Syndrome
		*/

		#define I82875P_DES 0x5d /* DRAM Error Status (8b)
		*
		* 7:1 reserved
		* 0 Error channel 0/1
		*/

		#define I82875P_ERRSTS 0xc8 /* Error Status Register (16b)
		*
		* 15:10 reserved
		* 9 non-DRAM lock error (ndlock)
		* 8 Sftwr Generated SMI
		* 7 ECC UE
		* 6 reserved
		* 5 MCH detects unimplemented cycle
		* 4 AGP access outside GA
		* 3 Invalid AGP access
		* 2 Invalid GA translation table
		* 1 Unsupported AGP command
		* 0 ECC CE
		*/

		#define I82875P_ERRCMD 0xca /* Error Command (16b)
		*
		* 15:10 reserved
		* 9 SERR on non-DRAM lock
		* 8 SERR on ECC UE
		* 7 SERR on ECC CE
		* 6 target abort on high exception
		* 5 detect unimplemented cyc
		* 4 AGP access outside of GA
		* 3 SERR on invalid AGP access
		* 2 invalid translation table
		* 1 SERR on unsupported AGP command
		* 0 reserved
		*/


		/* Intel 82875p register addresses - device 6 function 0 - DRAM Controller */
		#define I82875P_PCICMD6 0x04 /* PCI Command Register (16b)
		*
		* 15:10 reserved
		* 9 fast back-to-back - ro 0
		* 8 SERR enable - ro 0
		* 7 addr/data stepping - ro 0
		* 6 parity err enable - ro 0
		* 5 VGA palette snoop - ro 0
		* 4 mem wr & invalidate - ro 0
		* 3 special cycle - ro 0
		* 2 bus master - ro 0
		* 1 mem access dev6 - 0(dis),1(en)
		* 0 IO access dev3 - 0(dis),1(en)
		*/

		#define I82875P_BAR6 0x10 /* Mem Delays Base ADDR Reg (32b)
		*
		* 31:12 mem base addr [31:12]
		* 11:4 address mask - ro 0
		* 3 prefetchable - ro 0(non),1(pre)
		* 2:1 mem type - ro 0
		* 0 mem space - ro 0
		*/

		/* Intel 82875p MMIO register space - device 0 function 0 - MMR space */

		#define I82875P_DRB_SHIFT 26 /* 64MiB grain */
		#define I82875P_DRB 0x00 /* DRAM Row Boundary (8b x 8)
		*
		* 7 reserved
		* 6:0 64MiB row boundary addr
		*/

		#define I82875P_DRA 0x10 /* DRAM Row Attribute (4b x 8)
		*
		* 7 reserved
		* 6:4 row attr row 1
		* 3 reserved
		* 2:0 row attr row 0
		*
		* 000 = 4KiB
		* 001 = 8KiB
		* 010 = 16KiB
		* 011 = 32KiB
		*/

		#define I82875P_DRC 0x68 /* DRAM Controller Mode (32b)
		*
		* 31:30 reserved
		* 29 init complete
		* 28:23 reserved
		* 22:21 nr chan 00=1,01=2
		* 20 reserved
		* 19:18 Data Integ Mode 00=none,01=ecc
		* 17:11 reserved
		* 10:8 refresh mode
		* 7 reserved
		* 6:4 mode select
		* 3:2 reserved
		* 1:0 DRAM type 01=DDR
		*/


		enum i82875p_chips {
		I82875P = 0,
		};


		struct i82875p_pvt {
		struct pci_dev *ovrfl_pdev;
		void *ovrfl_window;
		};


		struct i82875p_dev_info {
		const char *ctl_name;
		};


		struct i82875p_error_info {
		u16 errsts;
		u32 eap;
		u8 des;
		u8 derrsyn;
		u16 errsts2;
		};


		static const struct i82875p_dev_info i82875p_devs[] = {
		[I82875P] = {
		.ctl_name = "i82875p"},
		};

		static struct pci_dev mci_pdev = NULL; / init dev: in case that AGP code
		has already registered driver */
		static int i82875p_registered = 1;

		static void i82875p_get_error_info (struct mem_ctl_info *mci,
		struct i82875p_error_info *info)
		{
		/*
		* This is a mess because there is no atomic way to read all the
		* registers at once and the registers can transition from CE being
		* overwritten by UE.
		*/
		pci_read_config_word(mci->pdev, I82875P_ERRSTS, &info->errsts);
		pci_read_config_dword(mci->pdev, I82875P_EAP, &info->eap);
		pci_read_config_byte(mci->pdev, I82875P_DES, &info->des);
		pci_read_config_byte(mci->pdev, I82875P_DERRSYN, &info->derrsyn);
		pci_read_config_word(mci->pdev, I82875P_ERRSTS, &info->errsts2);

		pci_write_bits16(mci->pdev, I82875P_ERRSTS, 0x0081, 0x0081);

		/*
		* If the error is the same then we can for both reads then
		* the first set of reads is valid. If there is a change then
		* there is a CE no info and the second set of reads is valid
		* and should be UE info.
		*/
		if (!(info->errsts2 & 0x0081))
		return;
		if ((info->errsts ^ info->errsts2) & 0x0081) {
		pci_read_config_dword(mci->pdev, I82875P_EAP, &info->eap);
		pci_read_config_byte(mci->pdev, I82875P_DES, &info->des);
		pci_read_config_byte(mci->pdev, I82875P_DERRSYN,
		&info->derrsyn);
		}
		}

		static int i82875p_process_error_info (struct mem_ctl_info *mci,
		struct i82875p_error_info *info, int handle_errors)
		{
		int row, multi_chan;

		multi_chan = mci->csrows[0].nr_channels - 1;

		if (!(info->errsts2 & 0x0081))
		return 0;

		if (!handle_errors)
		return 1;

		if ((info->errsts ^ info->errsts2) & 0x0081) {
		edac_mc_handle_ce_no_info(mci, "UE overwrote CE");
		info->errsts = info->errsts2;
		}

		info->eap >>= PAGE_SHIFT;
		row = edac_mc_find_csrow_by_page(mci, info->eap);

		if (info->errsts & 0x0080)
		edac_mc_handle_ue(mci, info->eap, 0, row, "i82875p UE");
		else
		edac_mc_handle_ce(mci, info->eap, 0, info->derrsyn, row,
		multi_chan ? (info->des & 0x1) : 0,
		"i82875p CE");

		return 1;
		}


		static void i82875p_check(struct mem_ctl_info *mci)
		{
		struct i82875p_error_info info;

		debugf1("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__);
		i82875p_get_error_info(mci, &info);
		i82875p_process_error_info(mci, &info, 1);
		}


		#ifdef CONFIG_PROC_FS
		extern int pci_proc_attach_device(struct pci_dev *);
		#endif

		static int i82875p_probe1(struct pci_dev *pdev, int dev_idx)
		{
		int rc = -ENODEV;
		int index;
		struct mem_ctl_info *mci = NULL;
		struct i82875p_pvt *pvt = NULL;
		unsigned long last_cumul_size;
		struct pci_dev *ovrfl_pdev;
		void __iomem *ovrfl_window = NULL;

		u32 drc;
		u32 drc_chan; /* Number of channels 0=1chan,1=2chan */
		u32 nr_chans;
		u32 drc_ddim; /* DRAM Data Integrity Mode 0=none,2=edac */

		debugf0("MC: " __FILE__ ": %s()\n", __func__);

		ovrfl_pdev = pci_find_device(PCI_VEND_DEV(INTEL, 82875_6), NULL);

		if (!ovrfl_pdev) {
		/*
		* Intel tells BIOS developers to hide device 6 which
		* configures the overflow device access containing
		* the DRBs - this is where we expose device 6.
		* http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
		*/
		pci_write_bits8(pdev, 0xf4, 0x2, 0x2);
		ovrfl_pdev =
		pci_scan_single_device(pdev->bus, PCI_DEVFN(6, 0));
		if (!ovrfl_pdev)
		goto fail;
		}
		#ifdef CONFIG_PROC_FS
		if (!ovrfl_pdev->procent && pci_proc_attach_device(ovrfl_pdev)) {
		printk(KERN_ERR "MC: " __FILE__
		": %s(): Failed to attach overflow device\n",
		__func__);
		goto fail;
		}
		#endif /* CONFIG_PROC_FS */
		if (pci_enable_device(ovrfl_pdev)) {
		printk(KERN_ERR "MC: " __FILE__
		": %s(): Failed to enable overflow device\n",
		__func__);
		goto fail;
		}

		if (pci_request_regions(ovrfl_pdev, pci_name(ovrfl_pdev))) {
		#ifdef CORRECT_BIOS
		goto fail;
		#endif
		}
		/* cache is irrelevant for PCI bus reads/writes */
		ovrfl_window = ioremap_nocache(pci_resource_start(ovrfl_pdev, 0),
		pci_resource_len(ovrfl_pdev, 0));

		if (!ovrfl_window) {
		printk(KERN_ERR "MC: " __FILE__
		": %s(): Failed to ioremap bar6\n", __func__);
		goto fail;
		}

		/* need to find out the number of channels */
		drc = readl(ovrfl_window + I82875P_DRC);
		drc_chan = ((drc >> 21) & 0x1);
		nr_chans = drc_chan + 1;
		drc_ddim = (drc >> 18) & 0x1;

		mci = edac_mc_alloc(sizeof(*pvt), I82875P_NR_CSROWS(nr_chans),
		nr_chans);

		if (!mci) {
		rc = -ENOMEM;
		goto fail;
		}

		debugf3("MC: " __FILE__ ": %s(): init mci\n", __func__);

		mci->pdev = pdev;
		mci->mtype_cap = MEM_FLAG_DDR;

		mci->edac_ctl_cap = EDAC_FLAG_NONE \| EDAC_FLAG_SECDED;
		mci->edac_cap = EDAC_FLAG_UNKNOWN;
		/* adjust FLAGS */

		mci->mod_name = BS_MOD_STR;
		mci->mod_ver = "$Revision: 1.5.2.11 $";
		mci->ctl_name = i82875p_devs[dev_idx].ctl_name;
		mci->edac_check = i82875p_check;
		mci->ctl_page_to_phys = NULL;

		debugf3("MC: " __FILE__ ": %s(): init pvt\n", __func__);

		pvt = (struct i82875p_pvt *) mci->pvt_info;
		pvt->ovrfl_pdev = ovrfl_pdev;
		pvt->ovrfl_window = ovrfl_window;

		/*
		* The dram row boundary (DRB) reg values are boundary address
		* for each DRAM row with a granularity of 32 or 64MB (single/dual
		* channel operation). DRB regs are cumulative; therefore DRB7 will
		* contain the total memory contained in all eight rows.
		*/
		for (last_cumul_size = index = 0; index < mci->nr_csrows; index++) {
		u8 value;
		u32 cumul_size;
		struct csrow_info *csrow = &mci->csrows[index];

		value = readb(ovrfl_window + I82875P_DRB + index);
		cumul_size = value << (I82875P_DRB_SHIFT - PAGE_SHIFT);
		debugf3("MC: " __FILE__ ": %s(): (%d) cumul_size 0x%x\n",
		__func__, index, cumul_size);
		if (cumul_size == last_cumul_size)
		continue; /* not populated */

		csrow->first_page = last_cumul_size;
		csrow->last_page = cumul_size - 1;
		csrow->nr_pages = cumul_size - last_cumul_size;
		last_cumul_size = cumul_size;
		csrow->grain = 1 << 12; /* I82875P_EAP has 4KiB reolution */
		csrow->mtype = MEM_DDR;
		csrow->dtype = DEV_UNKNOWN;
		csrow->edac_mode = drc_ddim ? EDAC_SECDED : EDAC_NONE;
		}

		/* clear counters */
		pci_write_bits16(mci->pdev, I82875P_ERRSTS, 0x0081, 0x0081);

		if (edac_mc_add_mc(mci)) {
		debugf3("MC: " __FILE__
		": %s(): failed edac_mc_add_mc()\n", __func__);
		goto fail;
		}

		/* get this far and it's successful */
		debugf3("MC: " __FILE__ ": %s(): success\n", __func__);
		return 0;

		fail:
		if (mci)
		edac_mc_free(mci);

		if (ovrfl_window)
		iounmap(ovrfl_window);

		if (ovrfl_pdev) {
		pci_release_regions(ovrfl_pdev);
		pci_disable_device(ovrfl_pdev);
		}

		/* NOTE: the ovrfl proc entry and pci_dev are intentionally left */
		return rc;
		}


		/* returns count (>= 0), or negative on error */
		static int __devinit i82875p_init_one(struct pci_dev *pdev,
		const struct pci_device_id *ent)
		{
		int rc;

		debugf0("MC: " __FILE__ ": %s()\n", __func__);

		printk(KERN_INFO "i82875p init one\n");
		if(pci_enable_device(pdev) < 0)
		return -EIO;
		rc = i82875p_probe1(pdev, ent->driver_data);
		if (mci_pdev == NULL)
		mci_pdev = pci_dev_get(pdev);
		return rc;
		}


		static void __devexit i82875p_remove_one(struct pci_dev *pdev)
		{
		struct mem_ctl_info *mci;
		struct i82875p_pvt *pvt = NULL;

		debugf0(__FILE__ ": %s()\n", __func__);

		if ((mci = edac_mc_find_mci_by_pdev(pdev)) == NULL)
		return;

		pvt = (struct i82875p_pvt *) mci->pvt_info;
		if (pvt->ovrfl_window)
		iounmap(pvt->ovrfl_window);

		if (pvt->ovrfl_pdev) {
		#ifdef CORRECT_BIOS
		pci_release_regions(pvt->ovrfl_pdev);
		#endif /CORRECT_BIOS /
		pci_disable_device(pvt->ovrfl_pdev);
		pci_dev_put(pvt->ovrfl_pdev);
		}

		if (edac_mc_del_mc(mci))
		return;

		edac_mc_free(mci);
		}


		static const struct pci_device_id i82875p_pci_tbl[] __devinitdata = {
		{PCI_VEND_DEV(INTEL, 82875_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
		I82875P},
		{0,} /* 0 terminated list. */
		};

		MODULE_DEVICE_TABLE(pci, i82875p_pci_tbl);


		static struct pci_driver i82875p_driver = {
		.name = BS_MOD_STR,
		.probe = i82875p_init_one,
		.remove = __devexit_p(i82875p_remove_one),
		.id_table = i82875p_pci_tbl,
		};


		int __init i82875p_init(void)
		{
		int pci_rc;

		debugf3("MC: " __FILE__ ": %s()\n", __func__);
		pci_rc = pci_register_driver(&i82875p_driver);
		if (pci_rc < 0)
		return pci_rc;
		if (mci_pdev == NULL) {
		i82875p_registered = 0;
		mci_pdev =
		pci_get_device(PCI_VENDOR_ID_INTEL,
		PCI_DEVICE_ID_INTEL_82875_0, NULL);
		if (!mci_pdev) {
		debugf0("875p pci_get_device fail\n");
		return -ENODEV;
		}
		pci_rc = i82875p_init_one(mci_pdev, i82875p_pci_tbl);
		if (pci_rc < 0) {
		debugf0("875p init fail\n");
		pci_dev_put(mci_pdev);
		return -ENODEV;
		}
		}
		return 0;
		}


		static void __exit i82875p_exit(void)
		{
		debugf3("MC: " __FILE__ ": %s()\n", __func__);

		pci_unregister_driver(&i82875p_driver);
		if (!i82875p_registered) {
		i82875p_remove_one(mci_pdev);
		pci_dev_put(mci_pdev);
		}
		}


		module_init(i82875p_init);
		module_exit(i82875p_exit);


		MODULE_LICENSE("GPL");
		MODULE_AUTHOR("Linux Networx (http://lnxi.com) Thayne Harbaugh");
		MODULE_DESCRIPTION("MC support for Intel 82875 memory hub controllers");