cregit-Linux how code gets into the kernel

Release 4.14 drivers/edac/e752x_edac.c

Directory: drivers/edac
/*
 * Intel e752x Memory Controller kernel module
 * (C) 2004 Linux Networx (http://lnxi.com)
 * This file may be distributed under the terms of the
 * GNU General Public License.
 *
 * Implement support for the e7520, E7525, e7320 and i3100 memory controllers.
 *
 * Datasheets:
 *      http://www.intel.in/content/www/in/en/chipsets/e7525-memory-controller-hub-datasheet.html
 *      ftp://download.intel.com/design/intarch/datashts/31345803.pdf
 *
 * Written by Tom Zimmerman
 *
 * Contributors:
 *      Thayne Harbaugh at realmsys.com (?)
 *      Wang Zhenyu at intel.com
 *      Dave Jiang at mvista.com
 *
 */

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


#define EDAC_MOD_STR	"e752x_edac"


static int report_non_memory_errors;

static int force_function_unhide;

static int sysbus_parity = -1;


static struct edac_pci_ctl_info *e752x_pci;


#define e752x_printk(level, fmt, arg...) \
	edac_printk(level, "e752x", fmt, ##arg)


#define e752x_mc_printk(mci, level, fmt, arg...) \
	edac_mc_chipset_printk(mci, level, "e752x", fmt, ##arg)

#ifndef PCI_DEVICE_ID_INTEL_7520_0

#define PCI_DEVICE_ID_INTEL_7520_0      0x3590
#endif				/* PCI_DEVICE_ID_INTEL_7520_0      */

#ifndef PCI_DEVICE_ID_INTEL_7520_1_ERR

#define PCI_DEVICE_ID_INTEL_7520_1_ERR  0x3591
#endif				/* PCI_DEVICE_ID_INTEL_7520_1_ERR  */

#ifndef PCI_DEVICE_ID_INTEL_7525_0

#define PCI_DEVICE_ID_INTEL_7525_0      0x359E
#endif				/* PCI_DEVICE_ID_INTEL_7525_0      */

#ifndef PCI_DEVICE_ID_INTEL_7525_1_ERR

#define PCI_DEVICE_ID_INTEL_7525_1_ERR  0x3593
#endif				/* PCI_DEVICE_ID_INTEL_7525_1_ERR  */

#ifndef PCI_DEVICE_ID_INTEL_7320_0

#define PCI_DEVICE_ID_INTEL_7320_0	0x3592
#endif				/* PCI_DEVICE_ID_INTEL_7320_0 */

#ifndef PCI_DEVICE_ID_INTEL_7320_1_ERR

#define PCI_DEVICE_ID_INTEL_7320_1_ERR	0x3593
#endif				/* PCI_DEVICE_ID_INTEL_7320_1_ERR */

#ifndef PCI_DEVICE_ID_INTEL_3100_0

#define PCI_DEVICE_ID_INTEL_3100_0	0x35B0
#endif				/* PCI_DEVICE_ID_INTEL_3100_0 */

#ifndef PCI_DEVICE_ID_INTEL_3100_1_ERR

#define PCI_DEVICE_ID_INTEL_3100_1_ERR	0x35B1
#endif				/* PCI_DEVICE_ID_INTEL_3100_1_ERR */


#define E752X_NR_CSROWS		8	
/* number of csrows */

/* E752X register addresses - device 0 function 0 */

#define E752X_MCHSCRB		0x52	
/* Memory Scrub register (16b) */
					/*
                                         * 6:5     Scrub Completion Count
                                         * 3:2     Scrub Rate (i3100 only)
                                         *      01=fast 10=normal
                                         * 1:0     Scrub Mode enable
                                         *      00=off 10=on
                                         */

#define E752X_DRB		0x60	
/* DRAM row boundary register (8b) */

#define E752X_DRA		0x70	
/* DRAM row attribute register (8b) */
					/*
                                         * 31:30   Device width row 7
                                         *      01=x8 10=x4 11=x8 DDR2
                                         * 27:26   Device width row 6
                                         * 23:22   Device width row 5
                                         * 19:20   Device width row 4
                                         * 15:14   Device width row 3
                                         * 11:10   Device width row 2
                                         *  7:6    Device width row 1
                                         *  3:2    Device width row 0
                                         */

#define E752X_DRC		0x7C	
/* DRAM controller mode reg (32b) */
					/* FIXME:IS THIS RIGHT? */
					/*
                                         * 22    Number channels 0=1,1=2
                                         * 19:18 DRB Granularity 32/64MB
                                         */

#define E752X_DRM		0x80	
/* Dimm mapping register */

#define E752X_DDRCSR		0x9A	
/* DDR control and status reg (16b) */
					/*
                                         * 14:12 1 single A, 2 single B, 3 dual
                                         */

#define E752X_TOLM		0xC4	
/* DRAM top of low memory reg (16b) */

#define E752X_REMAPBASE		0xC6	
/* DRAM remap base address reg (16b) */

#define E752X_REMAPLIMIT	0xC8	
/* DRAM remap limit address reg (16b) */

#define E752X_REMAPOFFSET	0xCA	
/* DRAM remap limit offset reg (16b) */

/* E752X register addresses - device 0 function 1 */

#define E752X_FERR_GLOBAL	0x40	
/* Global first error register (32b) */

#define E752X_NERR_GLOBAL	0x44	
/* Global next error register (32b) */

#define E752X_HI_FERR		0x50	
/* Hub interface first error reg (8b) */

#define E752X_HI_NERR		0x52	
/* Hub interface next error reg (8b) */

#define E752X_HI_ERRMASK	0x54	
/* Hub interface error mask reg (8b) */

#define E752X_HI_SMICMD		0x5A	
/* Hub interface SMI command reg (8b) */

#define E752X_SYSBUS_FERR	0x60	
/* System buss first error reg (16b) */

#define E752X_SYSBUS_NERR	0x62	
/* System buss next error reg (16b) */

#define E752X_SYSBUS_ERRMASK	0x64	
/* System buss error mask reg (16b) */

#define E752X_SYSBUS_SMICMD	0x6A	
/* System buss SMI command reg (16b) */

#define E752X_BUF_FERR		0x70	
/* Memory buffer first error reg (8b) */

#define E752X_BUF_NERR		0x72	
/* Memory buffer next error reg (8b) */

#define E752X_BUF_ERRMASK	0x74	
/* Memory buffer error mask reg (8b) */

#define E752X_BUF_SMICMD	0x7A	
/* Memory buffer SMI cmd reg (8b) */

#define E752X_DRAM_FERR		0x80	
/* DRAM first error register (16b) */

#define E752X_DRAM_NERR		0x82	
/* DRAM next error register (16b) */

#define E752X_DRAM_ERRMASK	0x84	
/* DRAM error mask register (8b) */

#define E752X_DRAM_SMICMD	0x8A	
/* DRAM SMI command register (8b) */

#define E752X_DRAM_RETR_ADD	0xAC	
/* DRAM Retry address register (32b) */

#define E752X_DRAM_SEC1_ADD	0xA0	
/* DRAM first correctable memory */
					/*     error address register (32b) */
					/*
                                         * 31    Reserved
                                         * 30:2  CE address (64 byte block 34:6
                                         * 1     Reserved
                                         * 0     HiLoCS
                                         */

#define E752X_DRAM_SEC2_ADD	0xC8	
/* DRAM first correctable memory */
					/*     error address register (32b) */
					/*
                                         * 31    Reserved
                                         * 30:2  CE address (64 byte block 34:6)
                                         * 1     Reserved
                                         * 0     HiLoCS
                                         */

#define E752X_DRAM_DED_ADD	0xA4	
/* DRAM first uncorrectable memory */
					/*     error address register (32b) */
					/*
                                         * 31    Reserved
                                         * 30:2  CE address (64 byte block 34:6)
                                         * 1     Reserved
                                         * 0     HiLoCS
                                         */

#define E752X_DRAM_SCRB_ADD	0xA8	
/* DRAM 1st uncorrectable scrub mem */
					/*     error address register (32b) */
					/*
                                         * 31    Reserved
                                         * 30:2  CE address (64 byte block 34:6
                                         * 1     Reserved
                                         * 0     HiLoCS
                                         */

#define E752X_DRAM_SEC1_SYNDROME 0xC4	
/* DRAM first correctable memory */
					/*     error syndrome register (16b) */

#define E752X_DRAM_SEC2_SYNDROME 0xC6	
/* DRAM second correctable memory */
					/*     error syndrome register (16b) */

#define E752X_DEVPRES1		0xF4	
/* Device Present 1 register (8b) */

/* 3100 IMCH specific register addresses - device 0 function 1 */

#define I3100_NSI_FERR		0x48	
/* NSI first error reg (32b) */

#define I3100_NSI_NERR		0x4C	
/* NSI next error reg (32b) */

#define I3100_NSI_SMICMD	0x54	
/* NSI SMI command register (32b) */

#define I3100_NSI_EMASK		0x90	
/* NSI error mask register (32b) */

/* ICH5R register addresses - device 30 function 0 */

#define ICH5R_PCI_STAT		0x06	
/* PCI status register (16b) */

#define ICH5R_PCI_2ND_STAT	0x1E	
/* PCI status secondary reg (16b) */

#define ICH5R_PCI_BRIDGE_CTL	0x3E	
/* PCI bridge control register (16b) */


enum e752x_chips {
	
E7520 = 0,
	
E7525 = 1,
	
E7320 = 2,
	
I3100 = 3
};

/*
 * Those chips Support single-rank and dual-rank memories only.
 *
 * On e752x chips, the odd rows are present only on dual-rank memories.
 * Dividing the rank by two will provide the dimm#
 *
 * i3100 MC has a different mapping: it supports only 4 ranks.
 *
 * The mapping is (from 1 to n):
 *      slot       single-ranked        double-ranked
 *      dimm #1 -> rank #4              NA
 *      dimm #2 -> rank #3              NA
 *      dimm #3 -> rank #2              Ranks 2 and 3
 *      dimm #4 -> rank $1              Ranks 1 and 4
 *
 * FIXME: The current mapping for i3100 considers that it supports up to 8
 *        ranks/chanel, but datasheet says that the MC supports only 4 ranks.
 */


struct e752x_pvt {
	
struct pci_dev *dev_d0f0;
	
struct pci_dev *dev_d0f1;
	
u32 tolm;
	
u32 remapbase;
	
u32 remaplimit;
	
int mc_symmetric;
	
u8 map[8];
	
int map_type;
	
const struct e752x_dev_info *dev_info;
};


struct e752x_dev_info {
	
u16 err_dev;
	
u16 ctl_dev;
	
const char *ctl_name;
};


struct e752x_error_info {
	
u32 ferr_global;
	
u32 nerr_global;
	
u32 nsi_ferr;	/* 3100 only */
	
u32 nsi_nerr;	/* 3100 only */
	
u8 hi_ferr;	/* all but 3100 */
	
u8 hi_nerr;	/* all but 3100 */
	
u16 sysbus_ferr;
	
u16 sysbus_nerr;
	
u8 buf_ferr;
	
u8 buf_nerr;
	
u16 dram_ferr;
	
u16 dram_nerr;
	
u32 dram_sec1_add;
	
u32 dram_sec2_add;
	
u16 dram_sec1_syndrome;
	
u16 dram_sec2_syndrome;
	
u32 dram_ded_add;
	
u32 dram_scrb_add;
	
u32 dram_retr_add;
};


static const struct e752x_dev_info e752x_devs[] = {
	[E7520] = {
		.err_dev = PCI_DEVICE_ID_INTEL_7520_1_ERR,
		.ctl_dev = PCI_DEVICE_ID_INTEL_7520_0,
		.ctl_name = "E7520"},
	[E7525] = {
		.err_dev = PCI_DEVICE_ID_INTEL_7525_1_ERR,
		.ctl_dev = PCI_DEVICE_ID_INTEL_7525_0,
		.ctl_name = "E7525"},
	[E7320] = {
		.err_dev = PCI_DEVICE_ID_INTEL_7320_1_ERR,
		.ctl_dev = PCI_DEVICE_ID_INTEL_7320_0,
		.ctl_name = "E7320"},
	[I3100] = {
		.err_dev = PCI_DEVICE_ID_INTEL_3100_1_ERR,
		.ctl_dev = PCI_DEVICE_ID_INTEL_3100_0,
		.ctl_name = "3100"},
};

/* Valid scrub rates for the e752x/3100 hardware memory scrubber. We
 * map the scrubbing bandwidth to a hardware register value. The 'set'
 * operation finds the 'matching or higher value'.  Note that scrubbing
 * on the e752x can only be enabled/disabled.  The 3100 supports
 * a normal and fast mode.
 */


#define SDRATE_EOT 0xFFFFFFFF


struct scrubrate {
	
u32 bandwidth;	/* bandwidth consumed by scrubbing in bytes/sec */
	
u16 scrubval;	/* register value for scrub rate */
};

/* Rate below assumes same performance as i3100 using PC3200 DDR2 in
 * normal mode.  e752x bridges don't support choosing normal or fast mode,
 * so the scrubbing bandwidth value isn't all that important - scrubbing is
 * either on or off.
 */

static const struct scrubrate scrubrates_e752x[] = {
	{0,		0x00},	/* Scrubbing Off */
	{500000,	0x02},	/* Scrubbing On */
	{SDRATE_EOT,	0x00}	/* End of Table */
};

/* Fast mode: 2 GByte PC3200 DDR2 scrubbed in 33s = 63161283 bytes/s
 * Normal mode: 125 (32000 / 256) times slower than fast mode.
 */

static const struct scrubrate scrubrates_i3100[] = {
	{0,		0x00},	/* Scrubbing Off */
	{500000,	0x0a},	/* Normal mode - 32k clocks */
	{62500000,	0x06},	/* Fast mode - 256 clocks */
	{SDRATE_EOT,	0x00}	/* End of Table */
};




static unsigned long ctl_page_to_phys(struct mem_ctl_info *mci,
				unsigned long page)
{
	u32 remap;
	struct e752x_pvt *pvt = (struct e752x_pvt *)mci->pvt_info;

	edac_dbg(3, "\n");

	if (page < pvt->tolm)
		return page;

	if ((page >= 0x100000) && (page < pvt->remapbase))
		return page;

	remap = (page - pvt->tolm) + pvt->remapbase;

	if (remap < pvt->remaplimit)
		return remap;

	e752x_printk(KERN_ERR, "Invalid page %lx - out of range\n", page);
	return pvt->tolm - 1;
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox10594.59%125.00%


Joe Perches32.70%125.00%


Dave Peterson21.80%125.00%


Mauro Carvalho Chehab10.90%125.00%


Total111100.00%4100.00%






static void do_process_ce(struct mem_ctl_info *mci, u16 error_one,
			u32 sec1_add, u16 sec1_syndrome)
{
	u32 page;
	int row;
	int channel;
	int i;
	struct e752x_pvt *pvt = (struct e752x_pvt *)mci->pvt_info;

	edac_dbg(3, "\n");

	/* convert the addr to 4k page */
	page = sec1_add >> (PAGE_SHIFT - 4);

	/* FIXME - check for -1 */
	if (pvt->mc_symmetric) {
		/* chip select are bits 14 & 13 */
		row = ((page >> 1) & 3);
		e752x_printk(KERN_WARNING,
			"Test row %d Table %d %d %d %d %d %d %d %d\n", row,
			pvt->map[0], pvt->map[1], pvt->map[2], pvt->map[3],
			pvt->map[4], pvt->map[5], pvt->map[6],
			pvt->map[7]);

		/* test for channel remapping */
		for (i = 0; i < 8; i++) {
			if (pvt->map[i] == row)
				break;
		}

		e752x_printk(KERN_WARNING, "Test computed row %d\n", i);

		if (i < 8)
			row = i;
		else
			e752x_mc_printk(mci, KERN_WARNING,
					"row %d not found in remap table\n",
					row);
	} else
		row = edac_mc_find_csrow_by_page(mci, page);

	/* 0 = channel A, 1 = channel B */
	channel = !(error_one & 1);

	/* e752x mc reads 34:6 of the DRAM linear address */
	edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1,
			     page, offset_in_page(sec1_add << 4), sec1_syndrome,
			     row, channel, -1,
			     "e752x CE", "");
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox23388.93%114.29%


Mauro Carvalho Chehab114.20%342.86%


Dave Peterson83.05%114.29%


Mike Chan72.67%114.29%


Joe Perches31.15%114.29%


Total262100.00%7100.00%






static inline void process_ce(struct mem_ctl_info *mci, u16 error_one,
			u32 sec1_add, u16 sec1_syndrome, int *error_found,
			int handle_error)
{
	*error_found = 1;

	if (handle_error)
		do_process_ce(mci, error_one, sec1_add, sec1_syndrome);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox48100.00%1100.00%


Total48100.00%1100.00%






static void do_process_ue(struct mem_ctl_info *mci, u16 error_one,
			u32 ded_add, u32 scrb_add)
{
	u32 error_2b, block_page;
	int row;
	struct e752x_pvt *pvt = (struct e752x_pvt *)mci->pvt_info;

	edac_dbg(3, "\n");

	if (error_one & 0x0202) {
		error_2b = ded_add;

		/* convert to 4k address */
		block_page = error_2b >> (PAGE_SHIFT - 4);

		row = pvt->mc_symmetric ?
		/* chip select are bits 14 & 13 */
			((block_page >> 1) & 3) :
			edac_mc_find_csrow_by_page(mci, block_page);

		/* e752x mc reads 34:6 of the DRAM linear address */
		edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1,
					block_page,
					offset_in_page(error_2b << 4), 0,
					 row, -1, -1,
					"e752x UE from Read", "");

	}
	if (error_one & 0x0404) {
		error_2b = scrb_add;

		/* convert to 4k address */
		block_page = error_2b >> (PAGE_SHIFT - 4);

		row = pvt->mc_symmetric ?
		/* chip select are bits 14 & 13 */
			((block_page >> 1) & 3) :
			edac_mc_find_csrow_by_page(mci, block_page);

		/* e752x mc reads 34:6 of the DRAM linear address */
		edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1,
					block_page,
					offset_in_page(error_2b << 4), 0,
					row, -1, -1,
					"e752x UE from Scruber", "");
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox16177.03%116.67%


Mauro Carvalho Chehab3114.83%350.00%


Mike Chan146.70%116.67%


Joe Perches31.44%116.67%


Total209100.00%6100.00%






static inline void process_ue(struct mem_ctl_info *mci, u16 error_one,
			u32 ded_add, u32 scrb_add, int *error_found,
			int handle_error)
{
	*error_found = 1;

	if (handle_error)
		do_process_ue(mci, error_one, ded_add, scrb_add);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox48100.00%1100.00%


Total48100.00%1100.00%






static inline void process_ue_no_info_wr(struct mem_ctl_info *mci,
					 int *error_found, int handle_error)
{
	*error_found = 1;

	if (!handle_error)
		return;

	edac_dbg(3, "\n");
	edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, 0, 0, 0,
			     -1, -1, -1,
			     "e752x UE log memory write", "");
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox3960.00%120.00%


Mauro Carvalho Chehab2335.38%360.00%


Joe Perches34.62%120.00%


Total65100.00%5100.00%






static void do_process_ded_retry(struct mem_ctl_info *mci, u16 error,
				 u32 retry_add)
{
	u32 error_1b, page;
	int row;
	struct e752x_pvt *pvt = (struct e752x_pvt *)mci->pvt_info;

	error_1b = retry_add;
	page = error_1b >> (PAGE_SHIFT - 4);  /* convert the addr to 4k page */

	/* chip select are bits 14 & 13 */
	row = pvt->mc_symmetric ? ((page >> 1) & 3) :
		edac_mc_find_csrow_by_page(mci, page);

	e752x_mc_printk(mci, KERN_WARNING,
			"CE page 0x%lx, row %d : Memory read retry\n",
			(long unsigned int)page, row);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox9194.79%133.33%


Dave Peterson44.17%133.33%


Doug Thompson11.04%133.33%


Total96100.00%3100.00%






static inline void process_ded_retry(struct mem_ctl_info *mci, u16 error,
				u32 retry_add, int *error_found,
				int handle_error)
{
	*error_found = 1;

	if (handle_error)
		do_process_ded_retry(mci, error, retry_add);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox43100.00%1100.00%


Total43100.00%1100.00%






static inline void process_threshold_ce(struct mem_ctl_info *mci, u16 error,
					int *error_found, int handle_error)
{
	*error_found = 1;

	if (handle_error)
		e752x_mc_printk(mci, KERN_WARNING, "Memory threshold CE\n");
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox3690.00%150.00%


Dave Peterson410.00%150.00%


Total40100.00%2100.00%




static char *global_message[11] = {
	"PCI Express C1",
	"PCI Express C",
	"PCI Express B1",
	"PCI Express B",
	"PCI Express A1",
	"PCI Express A",
	"DMA Controller",
	"HUB or NS Interface",
	"System Bus",
	"DRAM Controller",  /* 9th entry */
	"Internal Buffer"
};


#define DRAM_ENTRY	9


static char *fatal_message[2] = { "Non-Fatal ", "Fatal " };




static void do_global_error(int fatal, u32 errors)
{
	int i;

	for (i = 0; i < 11; i++) {
		if (errors & (1 << i)) {
			/* If the error is from DRAM Controller OR
                         * we are to report ALL errors, then
                         * report the error
                         */
			if ((i == DRAM_ENTRY) || report_non_memory_errors)
				e752x_printk(KERN_WARNING, "%sError %s\n",
					fatal_message[fatal],
					global_message[i]);
		}
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox5578.57%133.33%


Doug Thompson1318.57%133.33%


Dave Peterson22.86%133.33%


Total70100.00%3100.00%






static inline void global_error(int fatal, u32 errors, int *error_found,
				int handle_error)
{
	*error_found = 1;

	if (handle_error)
		do_global_error(fatal, errors);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox36100.00%1100.00%


Total36100.00%1100.00%




static char *hub_message[7] = {
	"HI Address or Command Parity", "HI Illegal Access",
	"HI Internal Parity", "Out of Range Access",
	"HI Data Parity", "Enhanced Config Access",
	"Hub Interface Target Abort"
};




static void do_hub_error(int fatal, u8 errors)
{
	int i;

	for (i = 0; i < 7; i++) {
		if (errors & (1 << i))
			e752x_printk(KERN_WARNING, "%sError %s\n",
				fatal_message[fatal], hub_message[i]);
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox5596.49%150.00%


Dave Peterson23.51%150.00%


Total57100.00%2100.00%






static inline void hub_error(int fatal, u8 errors, int *error_found,
			int handle_error)
{
	*error_found = 1;

	if (handle_error)
		do_hub_error(fatal, errors);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox36100.00%1100.00%


Total36100.00%1100.00%




#define NSI_FATAL_MASK		0x0c080081

#define NSI_NON_FATAL_MASK	0x23a0ba64

#define NSI_ERR_MASK		(NSI_FATAL_MASK | NSI_NON_FATAL_MASK)


static char *nsi_message[30] = {
	"NSI Link Down",	/* NSI_FERR/NSI_NERR bit 0, fatal error */
	"",						/* reserved */
	"NSI Parity Error",				/* bit 2, non-fatal */
	"",						/* reserved */
	"",						/* reserved */
	"Correctable Error Message",			/* bit 5, non-fatal */
	"Non-Fatal Error Message",			/* bit 6, non-fatal */
	"Fatal Error Message",				/* bit 7, fatal */
	"",						/* reserved */
	"Receiver Error",				/* bit 9, non-fatal */
	"",						/* reserved */
	"Bad TLP",					/* bit 11, non-fatal */
	"Bad DLLP",					/* bit 12, non-fatal */
	"REPLAY_NUM Rollover",				/* bit 13, non-fatal */
	"",						/* reserved */
	"Replay Timer Timeout",				/* bit 15, non-fatal */
	"",						/* reserved */
	"",						/* reserved */
	"",						/* reserved */
	"Data Link Protocol Error",			/* bit 19, fatal */
	"",						/* reserved */
	"Poisoned TLP",					/* bit 21, non-fatal */
	"",						/* reserved */
	"Completion Timeout",				/* bit 23, non-fatal */
	"Completer Abort",				/* bit 24, non-fatal */
	"Unexpected Completion",			/* bit 25, non-fatal */
	"Receiver Overflow",				/* bit 26, fatal */
	"Malformed TLP",				/* bit 27, fatal */
	"",						/* reserved */
	"Unsupported Request"				/* bit 29, non-fatal */
};




static void do_nsi_error(int fatal, u32 errors)
{
	int i;

	for (i = 0; i < 30; i++) {
		if (errors & (1 << i))
			printk(KERN_WARNING "%sError %s\n",
			       fatal_message[fatal], nsi_message[i]);
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Andrei Konovalov56100.00%1100.00%


Total56100.00%1100.00%






static inline void nsi_error(int fatal, u32 errors, int *error_found,
		int handle_error)
{
	*error_found = 1;

	if (handle_error)
		do_nsi_error(fatal, errors);
}


Contributors
PersonTokensPropCommitsCommitProp
Andrei Konovalov36100.00%1100.00%


Total36100.00%1100.00%




static char *membuf_message[4] = {
	"Internal PMWB to DRAM parity",
	"Internal PMWB to System Bus Parity",
	"Internal System Bus or IO to PMWB Parity",
	"Internal DRAM to PMWB Parity"
};




static void do_membuf_error(u8 errors)
{
	int i;

	for (i = 0; i < 4; i++) {
		if (errors & (1 << i))
			e752x_printk(KERN_WARNING, "Non-Fatal Error %s\n",
				membuf_message[i]);
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox4795.92%150.00%


Dave Peterson24.08%150.00%


Total49100.00%2100.00%






static inline void membuf_error(u8 errors, int *error_found, int handle_error)
{
	*error_found = 1;

	if (handle_error)
		do_membuf_error(errors);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox31100.00%1100.00%


Total31100.00%1100.00%




static char *sysbus_message[10] = {
	"Addr or Request Parity",
	"Data Strobe Glitch",
	"Addr Strobe Glitch",
	"Data Parity",
	"Addr Above TOM",
	"Non DRAM Lock Error",
	"MCERR", "BINIT",
	"Memory Parity",
	"IO Subsystem Parity"
};




static void do_sysbus_error(int fatal, u32 errors)
{
	int i;

	for (i = 0; i < 10; i++) {
		if (errors & (1 << i))
			e752x_printk(KERN_WARNING, "%sError System Bus %s\n",
				fatal_message[fatal], sysbus_message[i]);
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox5494.74%133.33%


Dave Peterson35.26%266.67%


Total57100.00%3100.00%






static inline void sysbus_error(int fatal, u32 errors, int *error_found,
				int handle_error)
{
	*error_found = 1;

	if (handle_error)
		do_sysbus_error(fatal, errors);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox2158.33%150.00%


Andrei Konovalov1541.67%150.00%


Total36100.00%2100.00%






static void e752x_check_hub_interface(struct e752x_error_info *info,
				int *error_found, int handle_error)
{
	u8 stat8;

	//pci_read_config_byte(dev,E752X_HI_FERR,&stat8);

	stat8 = info->hi_ferr;

	if (stat8 & 0x7f) {	/* Error, so process */
		stat8 &= 0x7f;

		if (stat8 & 0x2b)
			hub_error(1, stat8 & 0x2b, error_found, handle_error);

		if (stat8 & 0x54)
			hub_error(0, stat8 & 0x54, error_found, handle_error);
	}
	//pci_read_config_byte(dev,E752X_HI_NERR,&stat8);

	stat8 = info->hi_nerr;

	if (stat8 & 0x7f) {	/* Error, so process */
		stat8 &= 0x7f;

		if (stat8 & 0x2b)
			hub_error(1, stat8 & 0x2b, error_found, handle_error);

		if (stat8 & 0x54)
			hub_error(0, stat8 & 0x54, error_found, handle_error);
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Andrei Konovalov12893.43%150.00%


Alan Cox96.57%150.00%


Total137100.00%2100.00%






static void e752x_check_ns_interface(struct e752x_error_info *info,
				int *error_found, int handle_error)
{
	u32 stat32;

	stat32 = info->nsi_ferr;
	if (stat32 & NSI_ERR_MASK) { /* Error, so process */
		if (stat32 & NSI_FATAL_MASK)	/* check for fatal errors */
			nsi_error(1, stat32 & NSI_FATAL_MASK, error_found,
				  handle_error);
		if (stat32 & NSI_NON_FATAL_MASK) /* check for non-fatal ones */
			nsi_error(0, stat32 & NSI_NON_FATAL_MASK, error_found,
				  handle_error);
	}
	stat32 = info->nsi_nerr;
	if (stat32 & NSI_ERR_MASK) {
		if (stat32 & NSI_FATAL_MASK)
			nsi_error(1, stat32 & NSI_FATAL_MASK, error_found,
				  handle_error);
		if (stat32 & NSI_NON_FATAL_MASK)
			nsi_error(0, stat32 & NSI_NON_FATAL_MASK, error_found,
				  handle_error);
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox9574.22%150.00%


Andrei Konovalov3325.78%150.00%


Total128100.00%2100.00%






static void e752x_check_sysbus(struct e752x_error_info *info,
			int *error_found, int handle_error)
{
	u32 stat32, error32;

	//pci_read_config_dword(dev,E752X_SYSBUS_FERR,&stat32);
	stat32 = info->sysbus_ferr + (info->sysbus_nerr << 16);

	if (stat32 == 0)
		return;		/* no errors */

	error32 = (stat32 >> 16) & 0x3ff;
	stat32 = stat32 & 0x3ff;

	if (stat32 & 0x087)
		sysbus_error(1, stat32 & 0x087, error_found, handle_error);

	if (stat32 & 0x378)
		sysbus_error(0, stat32 & 0x378, error_found, handle_error);

	if (error32 & 0x087)
		sysbus_error(1, error32 & 0x087, error_found, handle_error);

	if (error32 & 0x378)
		sysbus_error(0, error32 & 0x378, error_found, handle_error);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox13094.20%150.00%


Brian Pomerantz85.80%150.00%


Total138100.00%2100.00%






static void e752x_check_membuf(struct e752x_error_info *info,
			int *error_found, int handle_error)
{
	u8 stat8;

	stat8 = info->buf_ferr;

	if (stat8 & 0x0f) {	/* Error, so process */
		stat8 &= 0x0f;
		membuf_error(stat8, error_found, handle_error);
	}

	stat8 = info->buf_nerr;

	if (stat8 & 0x0f) {	/* Error, so process */
		stat8 &= 0x0f;
		membuf_error(stat8, error_found, handle_error);
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox77100.00%1100.00%


Total77100.00%1100.00%






static void e752x_check_dram(struct mem_ctl_info *mci,
			struct e752x_error_info *info, int *error_found,
			int handle_error)
{
	u16 error_one, error_next;

	error_one = info->dram_ferr;
	error_next = info->dram_nerr;

	/* decode and report errors */
	if (error_one & 0x0101)	/* check first error correctable */
		process_ce(mci, error_one, info->dram_sec1_add,
			info->dram_sec1_syndrome, error_found, handle_error);

	if (error_next & 0x0101)	/* check next error correctable */
		process_ce(mci, error_next, info->dram_sec2_add,
			info->dram_sec2_syndrome, error_found, handle_error);

	if (error_one & 0x4040)
		process_ue_no_info_wr(mci, error_found, handle_error);

	if (error_next & 0x4040)
		process_ue_no_info_wr(mci, error_found, handle_error);

	if (error_one & 0x2020)
		process_ded_retry(mci, error_one, info->dram_retr_add,
				error_found, handle_error);

	if (error_next & 0x2020)
		process_ded_retry(mci, error_next, info->dram_retr_add,
				error_found, handle_error);

	if (error_one & 0x0808)
		process_threshold_ce(mci, error_one, error_found, handle_error);

	if (error_next & 0x0808)
		process_threshold_ce(mci, error_next, error_found,
				handle_error);

	if (error_one & 0x0606)
		process_ue(mci, error_one, info->dram_ded_add,
			info->dram_scrb_add, error_found, handle_error);

	if (error_next & 0x0606)
		process_ue(mci, error_next, info->dram_ded_add,
			info->dram_scrb_add, error_found, handle_error);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox249100.00%1100.00%


Total249100.00%1100.00%






static void e752x_get_error_info(struct mem_ctl_info *mci,
				 struct e752x_error_info *info)
{
	struct pci_dev *dev;
	struct e752x_pvt *pvt;

	memset(info, 0, sizeof(*info));
	pvt = (struct e752x_pvt *)mci->pvt_info;
	dev = pvt->dev_d0f1;
	pci_read_config_dword(dev, E752X_FERR_GLOBAL, &info->ferr_global);

	if (info->ferr_global) {
		if (pvt->dev_info->err_dev == PCI_DEVICE_ID_INTEL_3100_1_ERR) {
			pci_read_config_dword(dev, I3100_NSI_FERR,
					     &info->nsi_ferr);
			info->hi_ferr = 0;
		} else {
			pci_read_config_byte(dev, E752X_HI_FERR,
					     &info->hi_ferr);
			info->nsi_ferr = 0;
		}
		pci_read_config_word(dev, E752X_SYSBUS_FERR,
				&info->sysbus_ferr);
		pci_read_config_byte(dev, E752X_BUF_FERR, &info->buf_ferr);
		pci_read_config_word(dev, E752X_DRAM_FERR, &info->dram_ferr);
		pci_read_config_dword(dev, E752X_DRAM_SEC1_ADD,
				&info->dram_sec1_add);
		pci_read_config_word(dev, E752X_DRAM_SEC1_SYNDROME,
				&info->dram_sec1_syndrome);
		pci_read_config_dword(dev, E752X_DRAM_DED_ADD,
				&info->dram_ded_add);
		pci_read_config_dword(dev, E752X_DRAM_SCRB_ADD,
				&info->dram_scrb_add);
		pci_read_config_dword(dev, E752X_DRAM_RETR_ADD,
				&info->dram_retr_add);

		/* ignore the reserved bits just in case */
		if (info->hi_ferr & 0x7f)
			pci_write_config_byte(dev, E752X_HI_FERR,
					info->hi_ferr);

		if (info->nsi_ferr & NSI_ERR_MASK)
			pci_write_config_dword(dev, I3100_NSI_FERR,
					info->nsi_ferr);

		if (info->sysbus_ferr)
			pci_write_config_word(dev, E752X_SYSBUS_FERR,
					info->sysbus_ferr);

		if (info->buf_ferr & 0x0f)
			pci_write_config_byte(dev, E752X_BUF_FERR,
					info->buf_ferr);

		if (info->dram_ferr)
			pci_write_bits16(pvt->dev_d0f1, E752X_DRAM_FERR,
					 info->dram_ferr, info->dram_ferr);

		pci_write_config_dword(dev, E752X_FERR_GLOBAL,
				info->ferr_global);
	}

	pci_read_config_dword(dev, E752X_NERR_GLOBAL, &info->nerr_global);

	if (info->nerr_global) {
		if (pvt->dev_info->err_dev == PCI_DEVICE_ID_INTEL_3100_1_ERR) {
			pci_read_config_dword(dev, I3100_NSI_NERR,
					     &info->nsi_nerr);
			info->hi_nerr = 0;
		} else {
			pci_read_config_byte(dev, E752X_HI_NERR,
					     &info->hi_nerr);
			info->nsi_nerr = 0;
		}
		pci_read_config_word(dev, E752X_SYSBUS_NERR,
				&info->sysbus_nerr);
		pci_read_config_byte(dev, E752X_BUF_NERR, &info->buf_nerr);
		pci_read_config_word(dev, E752X_DRAM_NERR, &info->dram_nerr);
		pci_read_config_dword(dev, E752X_DRAM_SEC2_ADD,
				&info->dram_sec2_add);
		pci_read_config_word(dev, E752X_DRAM_SEC2_SYNDROME,
				&info->dram_sec2_syndrome);

		if (info->hi_nerr & 0x7f)
			pci_write_config_byte(dev, E752X_HI_NERR,
					info->hi_nerr);

		if (info->nsi_nerr & NSI_ERR_MASK)
			pci_write_config_dword(dev, I3100_NSI_NERR,
					info->nsi_nerr);

		if (info->sysbus_nerr)
			pci_write_config_word(dev, E752X_SYSBUS_NERR,
					info->sysbus_nerr);

		if (info->buf_nerr & 0x0f)
			pci_write_config_byte(dev, E752X_BUF_NERR,
					info->buf_nerr);

		if (info->dram_nerr)
			pci_write_bits16(pvt->dev_d0f1, E752X_DRAM_NERR,
					 info->dram_nerr, info->dram_nerr);

		pci_write_config_dword(dev, E752X_NERR_GLOBAL,
				info->nerr_global);
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox45279.16%133.33%


Andrei Konovalov11720.49%133.33%


Jean Delvare20.35%133.33%


Total571100.00%3100.00%






static int e752x_process_error_info(struct mem_ctl_info *mci,
				struct e752x_error_info *info,
				int handle_errors)
{
	u32 error32, stat32;
	int error_found;

	error_found = 0;
	error32 = (info->ferr_global >> 18) & 0x3ff;
	stat32 = (info->ferr_global >> 4) & 0x7ff;

	if (error32)
		global_error(1, error32, &error_found, handle_errors);

	if (stat32)
		global_error(0, stat32, &error_found, handle_errors);

	error32 = (info->nerr_global >> 18) & 0x3ff;
	stat32 = (info->nerr_global >> 4) & 0x7ff;

	if (error32)
		global_error(1, error32, &error_found, handle_errors);

	if (stat32)
		global_error(0, stat32, &error_found, handle_errors);

	e752x_check_hub_interface(info, &error_found, handle_errors);
	e752x_check_ns_interface(info, &error_found, handle_errors);
	e752x_check_sysbus(info, &error_found, handle_errors);
	e752x_check_membuf(info, &error_found, handle_errors);
	e752x_check_dram(mci, info, &error_found, handle_errors);
	return error_found;
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox18894.95%150.00%


Andrei Konovalov105.05%150.00%


Total198100.00%2100.00%






static void e752x_check(struct mem_ctl_info *mci)
{
	struct e752x_error_info info;

	edac_dbg(3, "\n");
	e752x_get_error_info(mci, &info);
	e752x_process_error_info(mci, &info, 1);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox3690.00%133.33%


Joe Perches37.50%133.33%


Mauro Carvalho Chehab12.50%133.33%


Total40100.00%3100.00%



/* Program byte/sec bandwidth scrub rate to hardware */



static int set_sdram_scrub_rate(struct mem_ctl_info *mci, u32 new_bw)
{
	const struct scrubrate *scrubrates;
	struct e752x_pvt *pvt = (struct e752x_pvt *) mci->pvt_info;
	struct pci_dev *pdev = pvt->dev_d0f0;
	int i;

	if (pvt->dev_info->ctl_dev == PCI_DEVICE_ID_INTEL_3100_0)
		scrubrates = scrubrates_i3100;
	else
		scrubrates = scrubrates_e752x;

	/* Translate the desired scrub rate to a e752x/3100 register value.
         * Search for the bandwidth that is equal or greater than the
         * desired rate and program the cooresponding register value.
         */
	for (i = 0; scrubrates[i].bandwidth != SDRATE_EOT; i++)
		if (scrubrates[i].bandwidth >= new_bw)
			break;

	if (scrubrates[i].bandwidth == SDRATE_EOT)
		return -1;

	pci_write_config_word(pdev, E752X_MCHSCRB, scrubrates[i].scrubval);

	return scrubrates[i].bandwidth;
}


Contributors
PersonTokensPropCommitsCommitProp
Peter Tyser12795.49%150.00%


Borislav Petkov64.51%150.00%


Total133100.00%2100.00%



/* Convert current scrub rate value into byte/sec bandwidth */



static int get_sdram_scrub_rate(struct mem_ctl_info *mci)
{
	const struct scrubrate *scrubrates;
	struct e752x_pvt *pvt = (struct e752x_pvt *) mci->pvt_info;
	struct pci_dev *pdev = pvt->dev_d0f0;
	u16 scrubval;
	int i;

	if (pvt->dev_info->ctl_dev == PCI_DEVICE_ID_INTEL_3100_0)
		scrubrates = scrubrates_i3100;
	else
		scrubrates = scrubrates_e752x;

	/* Find the bandwidth matching the memory scrubber configuration */
	pci_read_config_word(pdev, E752X_MCHSCRB, &scrubval);
	scrubval = scrubval & 0x0f;

	for (i = 0; scrubrates[i].bandwidth != SDRATE_EOT; i++)
		if (scrubrates[i].scrubval == scrubval)
			break;

	if (scrubrates[i].bandwidth == SDRATE_EOT) {
		e752x_printk(KERN_WARNING,
			"Invalid sdram scrub control value: 0x%x\n", scrubval);
		return -1;
	}
	return scrubrates[i].bandwidth;

}


Contributors
PersonTokensPropCommitsCommitProp
Peter Tyser14599.32%150.00%


Borislav Petkov10.68%150.00%


Total146100.00%2100.00%



/* Return 1 if dual channel mode is active.  Else return 0. */



static inline int dual_channel_active(u16 ddrcsr)
{
	return (((ddrcsr >> 12) & 3) == 3);
}


Contributors
PersonTokensPropCommitsCommitProp
Doug Thompson2080.00%150.00%


Alan Cox520.00%150.00%


Total25100.00%2100.00%



/* Remap csrow index numbers if map_type is "reverse"
 */



static inline int remap_csrow_index(struct mem_ctl_info *mci, int index)
{
	struct e752x_pvt *pvt = mci->pvt_info;

	if (!pvt->map_type)
		return (7 - index);

	return (index);
}


Contributors
PersonTokensPropCommitsCommitProp
Mark A. Grondona43100.00%1100.00%


Total43100.00%1100.00%






static void e752x_init_csrows(struct mem_ctl_info *mci, struct pci_dev *pdev,
			u16 ddrcsr)
{
	struct csrow_info *csrow;
	enum edac_type edac_mode;
	unsigned long last_cumul_size;
	int index, mem_dev, drc_chan;
	int drc_drbg;		/* DRB granularity 0=64mb, 1=128mb */
	int drc_ddim;		/* DRAM Data Integrity Mode 0=none, 2=edac */
	u8 value;
	u32 dra, drc, cumul_size, i, nr_pages;

	dra = 0;
	for (index = 0; index < 4; index++) {
		u8 dra_reg;
		pci_read_config_byte(pdev, E752X_DRA + index, &dra_reg);
		dra |= dra_reg << (index * 8);
	}
	pci_read_config_dword(pdev, E752X_DRC, &drc);
	drc_chan = dual_channel_active(ddrcsr) ? 1 : 0;
	drc_drbg = drc_chan + 1;	/* 128 in dual mode, 64 in single */
	drc_ddim = (drc >> 20) & 0x3;

	/* The dram row boundary (DRB) reg values are boundary address for
         * each DRAM row with a granularity of 64 or 128MB (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++) {
		/* mem_dev 0=x8, 1=x4 */
		mem_dev = (dra >> (index * 4 + 2)) & 0x3;
		csrow = mci->csrows[remap_csrow_index(mci, index)];

		mem_dev = (mem_dev == 2);
		pci_read_config_byte(pdev, E752X_DRB + index, &value);
		/* convert a 128 or 64 MiB DRB to a page size. */
		cumul_size = value << (25 + drc_drbg - PAGE_SHIFT);
		edac_dbg(3, "(%d) cumul_size 0x%x\n", index, cumul_size);
		if (cumul_size == last_cumul_size)
			continue;	/* not populated */

		csrow->first_page = last_cumul_size;
		csrow->last_page = cumul_size - 1;
		nr_pages = cumul_size - last_cumul_size;
		last_cumul_size = cumul_size;

		/*
                * if single channel or x8 devices then SECDED
                * if dual channel and x4 then S4ECD4ED
                */
		if (drc_ddim) {
			if (drc_chan && mem_dev) {
				edac_mode = EDAC_S4ECD4ED;
				mci->edac_cap |= EDAC_FLAG_S4ECD4ED;
			} else {
				edac_mode = EDAC_SECDED;
				mci->edac_cap |= EDAC_FLAG_SECDED;
			}
		} else
			edac_mode = EDAC_NONE;
		for (i = 0; i < csrow->nr_channels; i++) {
			struct dimm_info *dimm = csrow->channels[i]->dimm;

			edac_dbg(3, "Initializing rank at (%i,%i)\n", index, i);
			dimm->nr_pages = nr_pages / csrow->nr_channels;
			dimm->grain = 1 << 12;	/* 4KiB - resolution of CELOG */
			dimm->mtype = MEM_RDDR;	/* only one type supported */
			dimm->dtype = mem_dev ? DEV_X4 : DEV_X8;
			dimm->edac_mode = edac_mode;
		}
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox17443.83%18.33%


Mauro Carvalho Chehab10827.20%650.00%


Doug Thompson6716.88%18.33%


Brian Pomerantz369.07%18.33%


Joe Perches61.51%18.33%


Mark A. Grondona51.26%18.33%


Dave Peterson10.25%18.33%


Total397100.00%12100.00%






static void e752x_init_mem_map_table(struct pci_dev *pdev,
				struct e752x_pvt *pvt)
{
	int index;
	u8 value, last, row;

	last = 0;
	row = 0;

	for (index = 0; index < 8; index += 2) {
		pci_read_config_byte(pdev, E752X_DRB + index, &value);
		/* test if there is a dimm in this slot */
		if (value == last) {
			/* no dimm in the slot, so flag it as empty */
			pvt->map[index] = 0xff;
			pvt->map[index + 1] = 0xff;
		} else {	/* there is a dimm in the slot */
			pvt->map[index] = row;
			row++;
			last = value;
			/* test the next value to see if the dimm is double
                         * sided
                         */
			pci_read_config_byte(pdev, E752X_DRB + index + 1,
					&value);

			/* the dimm is single sided, so flag as empty */
			/* this is a double sided dimm to save the next row #*/
			pvt->map[index + 1] = (value == last) ? 0xff :	row;
			row++;
			last = value;
		}
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Doug Thompson13587.10%266.67%


Alan Cox2012.90%133.33%


Total155100.00%3100.00%



/* Return 0 on success or 1 on failure. */



static int e752x_get_devs(struct pci_dev *pdev, int dev_idx,
			struct e752x_pvt *pvt)
{
	pvt->dev_d0f1 = pci_get_device(PCI_VENDOR_ID_INTEL,
				pvt->dev_info->err_dev, NULL);

	if (pvt->dev_d0f1 == NULL) {
		pvt->dev_d0f1 = pci_scan_single_device(pdev->bus,
							PCI_DEVFN(0, 1));
		pci_dev_get(pvt->dev_d0f1);
	}

	if (pvt->dev_d0f1 == NULL) {
		e752x_printk(KERN_ERR, "error reporting device not found:"
			"vendor %x device 0x%x (broken BIOS?)\n",
			PCI_VENDOR_ID_INTEL, e752x_devs[dev_idx].err_dev);
		return 1;
	}

	pvt->dev_d0f0 = pci_get_device(PCI_VENDOR_ID_INTEL,
				e752x_devs[dev_idx].ctl_dev,
				NULL);

	if (pvt->dev_d0f0 == NULL)
		goto fail;

	return 0;

fail:
	pci_dev_put(pvt->dev_d0f1);
	return 1;
}


Contributors
PersonTokensPropCommitsCommitProp
Doug Thompson12485.52%125.00%


Jean Delvare138.97%250.00%


Aristeu Sergio Rozanski Filho85.52%125.00%


Total145100.00%4100.00%



/* Setup system bus parity mask register.
 * Sysbus parity supported on:
 * e7320/e7520/e7525 + Xeon
 */



static void e752x_init_sysbus_parity_mask(struct e752x_pvt *pvt)
{
	char *cpu_id = cpu_data(0).x86_model_id;
	struct pci_dev *dev = pvt->dev_d0f1;
	int enable = 1;

	/* Allow module parameter override, else see if CPU supports parity */
	if (sysbus_parity != -1) {
		enable = sysbus_parity;
	} else if (cpu_id[0] && !strstr(cpu_id, "Xeon")) {
		e752x_printk(KERN_INFO, "System Bus Parity not "
			     "supported by CPU, disabling\n");
		enable = 0;
	}

	if (enable)
		pci_write_config_word(dev, E752X_SYSBUS_ERRMASK, 0x0000);
	else
		pci_write_config_word(dev, E752X_SYSBUS_ERRMASK, 0x0309);
}


Contributors
PersonTokensPropCommitsCommitProp
Peter Tyser10097.09%133.33%


Konstantin Olifer21.94%133.33%


Martin Olsson10.97%133.33%


Total103100.00%3100.00%






static void e752x_init_error_reporting_regs(struct e752x_pvt *pvt)
{
	struct pci_dev *dev;

	dev = pvt->dev_d0f1;
	/* Turn off error disable & SMI in case the BIOS turned it on */
	if (pvt->dev_info->err_dev == PCI_DEVICE_ID_INTEL_3100_1_ERR) {
		pci_write_config_dword(dev, I3100_NSI_EMASK, 0);
		pci_write_config_dword(dev, I3100_NSI_SMICMD, 0);
	} else {
		pci_write_config_byte(dev, E752X_HI_ERRMASK, 0x00);
		pci_write_config_byte(dev, E752X_HI_SMICMD, 0x00);
	}

	e752x_init_sysbus_parity_mask(pvt);

	pci_write_config_word(dev, E752X_SYSBUS_SMICMD, 0x00);
	pci_write_config_byte(dev, E752X_BUF_ERRMASK, 0x00);
	pci_write_config_byte(dev, E752X_BUF_SMICMD, 0x00);
	pci_write_config_byte(dev, E752X_DRAM_ERRMASK, 0x00);
	pci_write_config_byte(dev, E752X_DRAM_SMICMD, 0x00);
}


Contributors
PersonTokensPropCommitsCommitProp
Doug Thompson8971.77%133.33%


Andrei Konovalov3326.61%133.33%


Peter Tyser21.61%133.33%


Total124100.00%3100.00%






static int e752x_probe1(struct pci_dev *pdev, int dev_idx)
{
	u16 pci_data;
	u8 stat8;
	struct mem_ctl_info *mci;
	struct edac_mc_layer layers[2];
	struct e752x_pvt *pvt;
	u16 ddrcsr;
	int drc_chan;		/* Number of channels 0=1chan,1=2chan */
	struct e752x_error_info discard;

	edac_dbg(0, "mci\n");
	edac_dbg(0, "Starting Probe1\n");

	/* check to see if device 0 function 1 is enabled; if it isn't, we
         * assume the BIOS has reserved it for a reason and is expecting
         * exclusive access, we take care not to violate that assumption and
         * fail the probe. */
	pci_read_config_byte(pdev, E752X_DEVPRES1, &stat8);
	if (!force_function_unhide && !(stat8 & (1 << 5))) {
		printk(KERN_INFO "Contact your BIOS vendor to see if the "
			"E752x error registers can be safely un-hidden\n");
		return -ENODEV;
	}
	stat8 |= (1 << 5);
	pci_write_config_byte(pdev, E752X_DEVPRES1, stat8);

	pci_read_config_word(pdev, E752X_DDRCSR, &ddrcsr);
	/* FIXME: should check >>12 or 0xf, true for all? */
	/* Dual channel = 1, Single channel = 0 */
	drc_chan = dual_channel_active(ddrcsr);

	layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
	layers[0].size = E752X_NR_CSROWS;
	layers[0].is_virt_csrow = true;
	layers[1].type = EDAC_MC_LAYER_CHANNEL;
	layers[1].size = drc_chan + 1;
	layers[1].is_virt_csrow = false;
	mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers, sizeof(*pvt));
	if (mci == NULL)
		return -ENOMEM;

	edac_dbg(3, "init mci\n");
	mci->mtype_cap = MEM_FLAG_RDDR;
	/* 3100 IMCH supports SECDEC only */
	mci->edac_ctl_cap = (dev_idx == I3100) ? EDAC_FLAG_SECDED :
		(EDAC_FLAG_NONE | EDAC_FLAG_SECDED | EDAC_FLAG_S4ECD4ED);
	/* FIXME - what if different memory types are in different csrows? */
	mci->mod_name = EDAC_MOD_STR;
	mci->pdev = &pdev->dev;

	edac_dbg(3, "init pvt\n");
	pvt = (struct e752x_pvt *)mci->pvt_info;
	pvt->dev_info = &e752x_devs[dev_idx];
	pvt->mc_symmetric = ((ddrcsr & 0x10) != 0);

	if (e752x_get_devs(pdev, dev_idx, pvt)) {
		edac_mc_free(mci);
		return -ENODEV;
	}

	edac_dbg(3, "more mci init\n");
	mci->ctl_name = pvt->dev_info->ctl_name;
	mci->dev_name = pci_name(pdev);
	mci->edac_check = e752x_check;
	mci->ctl_page_to_phys = ctl_page_to_phys;
	mci->set_sdram_scrub_rate = set_sdram_scrub_rate;
	mci->get_sdram_scrub_rate = get_sdram_scrub_rate;

	/* set the map type.  1 = normal, 0 = reversed
         * Must be set before e752x_init_csrows in case csrow mapping
         * is reversed.
         */
	pci_read_config_byte(pdev, E752X_DRM, &stat8);
	pvt->map_type = ((stat8 & 0x0f) > ((stat8 >> 4) & 0x0f));

	e752x_init_csrows(mci, pdev, ddrcsr);
	e752x_init_mem_map_table(pdev, pvt);

	if (dev_idx == I3100)
		mci->edac_cap = EDAC_FLAG_SECDED; /* the only mode supported */
	else
		mci->edac_cap |= EDAC_FLAG_NONE;
	edac_dbg(3, "tolm, remapbase, remaplimit\n");

	/* load the top of low memory, remap base, and remap limit vars */
	pci_read_config_word(pdev, E752X_TOLM, &pci_data);
	pvt->tolm = ((u32) pci_data) << 4;
	pci_read_config_word(pdev, E752X_REMAPBASE, &pci_data);
	pvt->remapbase = ((u32) pci_data) << 14;
	pci_read_config_word(pdev, E752X_REMAPLIMIT, &pci_data);
	pvt->remaplimit = ((u32) pci_data) << 14;
	e752x_printk(KERN_INFO,
			"tolm = %x, remapbase = %x, remaplimit = %x\n",
			pvt->tolm, pvt->remapbase, pvt->remaplimit);

	/* Here we assume that we will never see multiple instances of this
         * type of memory controller.  The ID is therefore hardcoded to 0.
         */
	if (edac_mc_add_mc(mci)) {
		edac_dbg(3, "failed edac_mc_add_mc()\n");
		goto fail;
	}

	e752x_init_error_reporting_regs(pvt);
	e752x_get_error_info(mci, &discard);	/* clear other MCH errors */

	/* allocating generic PCI control info */
	e752x_pci = edac_pci_create_generic_ctl(&pdev->dev, EDAC_MOD_STR);
	if (!e752x_pci) {
		printk(KERN_WARNING
			"%s(): Unable to create PCI control\n", __func__);
		printk(KERN_WARNING
			"%s(): PCI error report via EDAC not setup\n",
			__func__);
	}

	/* get this far and it's successful */
	edac_dbg(3, "success\n");
	return 0;

fail:
	pci_dev_put(pvt->dev_d0f0);
	pci_dev_put(pvt->dev_d0f1);
	edac_mc_free(mci);

	return -ENODEV;
}


Contributors
PersonTokensPropCommitsCommitProp
Doug Thompson25138.09%211.76%


Alan Cox19629.74%15.88%


Mauro Carvalho Chehab8112.29%423.53%


Dave Jiang456.83%211.76%


Andrei Konovalov253.79%15.88%


Joe Perches243.64%15.88%


Mark A. Grondona172.58%15.88%


Peter Tyser121.82%15.88%


Dave Peterson71.06%317.65%


Aristeu Sergio Rozanski Filho10.15%15.88%


Total659100.00%17100.00%



/* returns count (>= 0), or negative on error */



static int e752x_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	edac_dbg(0, "\n");

	/* wake up and enable device */
	if (pci_enable_device(pdev) < 0)
		return -EIO;

	return e752x_probe1(pdev, ent->driver_data);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox4491.67%133.33%


Joe Perches36.25%133.33%


Mauro Carvalho Chehab12.08%133.33%


Total48100.00%3100.00%






static void e752x_remove_one(struct pci_dev *pdev)
{
	struct mem_ctl_info *mci;
	struct e752x_pvt *pvt;

	edac_dbg(0, "\n");

	if (e752x_pci)
		edac_pci_release_generic_ctl(e752x_pci);

	if ((mci = edac_mc_del_mc(&pdev->dev)) == NULL)
		return;

	pvt = (struct e752x_pvt *)mci->pvt_info;
	pci_dev_put(pvt->dev_d0f0);
	pci_dev_put(pvt->dev_d0f1);
	edac_mc_free(mci);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox6779.76%116.67%


Dave Jiang910.71%116.67%


Doug Thompson33.57%116.67%


Joe Perches33.57%116.67%


Mauro Carvalho Chehab11.19%116.67%


Dave Peterson11.19%116.67%


Total84100.00%6100.00%




static const struct pci_device_id e752x_pci_tbl[] = {
	{
	 PCI_VEND_DEV(INTEL, 7520_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
	 E7520},
	{
	 PCI_VEND_DEV(INTEL, 7525_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
	 E7525},
	{
	 PCI_VEND_DEV(INTEL, 7320_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
	 E7320},
	{
	 PCI_VEND_DEV(INTEL, 3100_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
	 I3100},
	{
	 0,
         }			/* 0 terminated list. */
};

MODULE_DEVICE_TABLE(pci, e752x_pci_tbl);


static struct pci_driver e752x_driver = {
	.name = EDAC_MOD_STR,
	.probe = e752x_init_one,
	.remove = e752x_remove_one,
	.id_table = e752x_pci_tbl,
};




static int __init e752x_init(void)
{
	int pci_rc;

	edac_dbg(3, "\n");

       /* Ensure that the OPSTATE is set correctly for POLL or NMI */
       opstate_init();

	pci_rc = pci_register_driver(&e752x_driver);
	return (pci_rc < 0) ? pci_rc : 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox3480.95%240.00%


Hitoshi Mitake49.52%120.00%


Joe Perches37.14%120.00%


Mauro Carvalho Chehab12.38%120.00%


Total42100.00%5100.00%






static void __exit e752x_exit(void)
{
	edac_dbg(3, "\n");
	pci_unregister_driver(&e752x_driver);
}


Contributors
PersonTokensPropCommitsCommitProp
Alan Cox1881.82%133.33%


Joe Perches313.64%133.33%


Mauro Carvalho Chehab14.55%133.33%


Total22100.00%3100.00%




module_init(e752x_init);

module_exit(e752x_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Linux Networx (http://lnxi.com) Tom Zimmerman\n");
MODULE_DESCRIPTION("MC support for Intel e752x/3100 memory controllers");

module_param(force_function_unhide, int, 0444);
MODULE_PARM_DESC(force_function_unhide, "if BIOS sets Dev0:Fun1 up as hidden:"
		 " 1=force unhide and hope BIOS doesn't fight driver for "
		"Dev0:Fun1 access");

module_param(edac_op_state, int, 0444);
MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI");

module_param(sysbus_parity, int, 0444);
MODULE_PARM_DESC(sysbus_parity, "0=disable system bus parity checking,"
		" 1=enable system bus parity checking, default=auto-detect");
module_param(report_non_memory_errors, int, 0644);
MODULE_PARM_DESC(report_non_memory_errors, "0=disable non-memory error "
		"reporting, 1=enable non-memory error reporting");

Overall Contributors
PersonTokensPropCommitsCommitProp
Alan Cox359857.80%24.08%


Doug Thompson74311.94%612.24%


Andrei Konovalov66210.63%12.04%


Peter Tyser5058.11%24.08%


Mauro Carvalho Chehab2634.22%1122.45%


Dave Peterson1131.82%714.29%


Dave Jiang801.29%48.16%


Mark A. Grondona661.06%12.04%


Joe Perches570.92%12.04%


Brian Pomerantz440.71%24.08%


Mike Chan210.34%12.04%


Mark Gross200.32%12.04%


Jean Delvare150.24%24.08%


Aristeu Sergio Rozanski Filho90.14%24.08%


Randy Dunlap80.13%12.04%


Borislav Petkov70.11%12.04%


Jingoo Han60.10%12.04%


Hitoshi Mitake40.06%12.04%


Konstantin Olifer30.05%12.04%


Martin Olsson10.02%12.04%


Lionel Debroux0.00%00.00%


Total6225100.00%49100.00%


Directory: drivers/edac



Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.