[net-next-2.6.git] / drivers / edac / amd64_edac.h

/*
 * AMD64 class Memory Controller kernel module
 *
 * Copyright (c) 2009 SoftwareBitMaker.
 * Copyright (c) 2009 Advanced Micro Devices, Inc.
 *
 * This file may be distributed under the terms of the
 * GNU General Public License.
 *
 *	Originally Written by Thayne Harbaugh
 *
 *      Changes by Douglas "norsk" Thompson  <dougthompson@xmission.com>:
 *		- K8 CPU Revision D and greater support
 *
 *      Changes by Dave Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>:
 *		- Module largely rewritten, with new (and hopefully correct)
 *		code for dealing with node and chip select interleaving,
 *		various code cleanup, and bug fixes
 *		- Added support for memory hoisting using DRAM hole address
 *		register
 *
 *	Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
 *		-K8 Rev (1207) revision support added, required Revision
 *		specific mini-driver code to support Rev F as well as
 *		prior revisions
 *
 *	Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
 *		-Family 10h revision support added. New PCI Device IDs,
 *		indicating new changes. Actual registers modified
 *		were slight, less than the Rev E to Rev F transition
 *		but changing the PCI Device ID was the proper thing to
 *		do, as it provides for almost automactic family
 *		detection. The mods to Rev F required more family
 *		information detection.
 *
 *	Changes/Fixes by Borislav Petkov <borislav.petkov@amd.com>:
 *		- misc fixes and code cleanups
 *
 * This module is based on the following documents
 * (available from http://www.amd.com/):
 *
 *	Title:	BIOS and Kernel Developer's Guide for AMD Athlon 64 and AMD
 *		Opteron Processors
 *	AMD publication #: 26094
 *`	Revision: 3.26
 *
 *	Title:	BIOS and Kernel Developer's Guide for AMD NPT Family 0Fh
 *		Processors
 *	AMD publication #: 32559
 *	Revision: 3.00
 *	Issue Date: May 2006
 *
 *	Title:	BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h
 *		Processors
 *	AMD publication #: 31116
 *	Revision: 3.00
 *	Issue Date: September 07, 2007
 *
 * Sections in the first 2 documents are no longer in sync with each other.
 * The Family 10h BKDG was totally re-written from scratch with a new
 * presentation model.
 * Therefore, comments that refer to a Document section might be off.
 */

#include <linux/module.h>
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
#include <linux/slab.h>
#include <linux/mmzone.h>
#include <linux/edac.h>
#include <asm/msr.h>
#include "edac_core.h"
#include "edac_mce_amd.h"

#define amd64_printk(level, fmt, arg...) \
	edac_printk(level, "amd64", fmt, ##arg)

#define amd64_mc_printk(mci, level, fmt, arg...) \
	edac_mc_chipset_printk(mci, level, "amd64", fmt, ##arg)

/*
 * Throughout the comments in this code, the following terms are used:
 *
 *	SysAddr, DramAddr, and InputAddr
 *
 *  These terms come directly from the amd64 documentation
 * (AMD publication #26094).  They are defined as follows:
 *
 *     SysAddr:
 *         This is a physical address generated by a CPU core or a device
 *         doing DMA.  If generated by a CPU core, a SysAddr is the result of
 *         a virtual to physical address translation by the CPU core's address
 *         translation mechanism (MMU).
 *
 *     DramAddr:
 *         A DramAddr is derived from a SysAddr by subtracting an offset that
 *         depends on which node the SysAddr maps to and whether the SysAddr
 *         is within a range affected by memory hoisting.  The DRAM Base
 *         (section 3.4.4.1) and DRAM Limit (section 3.4.4.2) registers
 *         determine which node a SysAddr maps to.
 *
 *         If the DRAM Hole Address Register (DHAR) is enabled and the SysAddr
 *         is within the range of addresses specified by this register, then
 *         a value x from the DHAR is subtracted from the SysAddr to produce a
 *         DramAddr.  Here, x represents the base address for the node that
 *         the SysAddr maps to plus an offset due to memory hoisting.  See
 *         section 3.4.8 and the comments in amd64_get_dram_hole_info() and
 *         sys_addr_to_dram_addr() below for more information.
 *
 *         If the SysAddr is not affected by the DHAR then a value y is
 *         subtracted from the SysAddr to produce a DramAddr.  Here, y is the
 *         base address for the node that the SysAddr maps to.  See section
 *         3.4.4 and the comments in sys_addr_to_dram_addr() below for more
 *         information.
 *
 *     InputAddr:
 *         A DramAddr is translated to an InputAddr before being passed to the
 *         memory controller for the node that the DramAddr is associated
 *         with.  The memory controller then maps the InputAddr to a csrow.
 *         If node interleaving is not in use, then the InputAddr has the same
 *         value as the DramAddr.  Otherwise, the InputAddr is produced by
 *         discarding the bits used for node interleaving from the DramAddr.
 *         See section 3.4.4 for more information.
 *
 *         The memory controller for a given node uses its DRAM CS Base and
 *         DRAM CS Mask registers to map an InputAddr to a csrow.  See
 *         sections 3.5.4 and 3.5.5 for more information.
 */

#define EDAC_AMD64_VERSION		" Ver: 3.2.0 " __DATE__
#define EDAC_MOD_STR			"amd64_edac"

/* Extended Model from CPUID, for CPU Revision numbers */
#define OPTERON_CPU_LE_REV_C		0
#define OPTERON_CPU_REV_D		1
#define OPTERON_CPU_REV_E		2

/* NPT processors have the following Extended Models */
#define OPTERON_CPU_REV_F		4
#define OPTERON_CPU_REV_FA		5

/* Hardware limit on ChipSelect rows per MC and processors per system */
#define CHIPSELECT_COUNT		8
#define DRAM_REG_COUNT			8


/*
 * PCI-defined configuration space registers
 */


/*
 * Function 1 - Address Map
 */
#define K8_DRAM_BASE_LOW		0x40
#define K8_DRAM_LIMIT_LOW		0x44
#define K8_DHAR				0xf0

#define DHAR_VALID			BIT(0)
#define F10_DRAM_MEM_HOIST_VALID	BIT(1)

#define DHAR_BASE_MASK			0xff000000
#define dhar_base(dhar)			(dhar & DHAR_BASE_MASK)

#define K8_DHAR_OFFSET_MASK		0x0000ff00
#define k8_dhar_offset(dhar)		((dhar & K8_DHAR_OFFSET_MASK) << 16)

#define F10_DHAR_OFFSET_MASK		0x0000ff80
					/* NOTE: Extra mask bit vs K8 */
#define f10_dhar_offset(dhar)		((dhar & F10_DHAR_OFFSET_MASK) << 16)


/* F10 High BASE/LIMIT registers */
#define F10_DRAM_BASE_HIGH		0x140
#define F10_DRAM_LIMIT_HIGH		0x144


/*
 * Function 2 - DRAM controller
 */
#define K8_DCSB0			0x40
#define F10_DCSB1			0x140

#define K8_DCSB_CS_ENABLE		BIT(0)
#define K8_DCSB_NPT_SPARE		BIT(1)
#define K8_DCSB_NPT_TESTFAIL		BIT(2)

/*
 * REV E: select [31:21] and [15:9] from DCSB and the shift amount to form
 * the address
 */
#define REV_E_DCSB_BASE_BITS		(0xFFE0FE00ULL)
#define REV_E_DCS_SHIFT			4
#define REV_E_DCSM_COUNT		8

#define REV_F_F1Xh_DCSB_BASE_BITS	(0x1FF83FE0ULL)
#define REV_F_F1Xh_DCS_SHIFT		8

/*
 * REV F and later: selects [28:19] and [13:5] from DCSB and the shift amount
 * to form the address
 */
#define REV_F_DCSB_BASE_BITS		(0x1FF83FE0ULL)
#define REV_F_DCS_SHIFT			8
#define REV_F_DCSM_COUNT		4
#define F10_DCSM_COUNT			4
#define F11_DCSM_COUNT			2

/* DRAM CS Mask Registers */
#define K8_DCSM0			0x60
#define F10_DCSM1			0x160

/* REV E: select [29:21] and [15:9] from DCSM */
#define REV_E_DCSM_MASK_BITS		0x3FE0FE00

/* unused bits [24:20] and [12:0] */
#define REV_E_DCS_NOTUSED_BITS		0x01F01FFF

/* REV F and later: select [28:19] and [13:5] from DCSM */
#define REV_F_F1Xh_DCSM_MASK_BITS	0x1FF83FE0

/* unused bits [26:22] and [12:0] */
#define REV_F_F1Xh_DCS_NOTUSED_BITS	0x07C01FFF

#define DBAM0				0x80
#define DBAM1				0x180

/* Extract the DIMM 'type' on the i'th DIMM from the DBAM reg value passed */
#define DBAM_DIMM(i, reg)		((((reg) >> (4*i))) & 0xF)

#define DBAM_MAX_VALUE			11


#define F10_DCLR_0			0x90
#define F10_DCLR_1			0x190
#define REVE_WIDTH_128			BIT(16)
#define F10_WIDTH_128			BIT(11)


#define F10_DCHR_0			0x94
#define F10_DCHR_1			0x194

#define F10_DCHR_FOUR_RANK_DIMM		BIT(18)
#define F10_DCHR_Ddr3Mode		BIT(8)
#define F10_DCHR_MblMode		BIT(6)


#define F10_DCTL_SEL_LOW		0x110

#define dct_sel_baseaddr(pvt)    \
	((pvt->dram_ctl_select_low) & 0xFFFFF800)

#define dct_sel_interleave_addr(pvt)    \
	(((pvt->dram_ctl_select_low) >> 6) & 0x3)

enum {
	F10_DCTL_SEL_LOW_DctSelHiRngEn	= BIT(0),
	F10_DCTL_SEL_LOW_DctSelIntLvEn	= BIT(2),
	F10_DCTL_SEL_LOW_DctGangEn	= BIT(4),
	F10_DCTL_SEL_LOW_DctDatIntLv	= BIT(5),
	F10_DCTL_SEL_LOW_DramEnable	= BIT(8),
	F10_DCTL_SEL_LOW_MemCleared	= BIT(10),
};

#define    dct_high_range_enabled(pvt)    \
	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctSelHiRngEn)

#define dct_interleave_enabled(pvt)	   \
	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctSelIntLvEn)

#define dct_ganging_enabled(pvt)        \
	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctGangEn)

#define dct_data_intlv_enabled(pvt)    \
	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctDatIntLv)

#define dct_dram_enabled(pvt)    \
	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DramEnable)

#define dct_memory_cleared(pvt)    \
	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_MemCleared)


#define F10_DCTL_SEL_HIGH		0x114


/*
 * Function 3 - Misc Control
 */
#define K8_NBCTL			0x40

/* Correctable ECC error reporting enable */
#define K8_NBCTL_CECCEn			BIT(0)

/* UnCorrectable ECC error reporting enable */
#define K8_NBCTL_UECCEn			BIT(1)

#define K8_NBCFG			0x44
#define K8_NBCFG_CHIPKILL		BIT(23)
#define K8_NBCFG_ECC_ENABLE		BIT(22)

#define K8_NBSL				0x48


/* Family F10h: Normalized Extended Error Codes */
#define F10_NBSL_EXT_ERR_RES		0x0
#define F10_NBSL_EXT_ERR_CRC		0x1
#define F10_NBSL_EXT_ERR_SYNC		0x2
#define F10_NBSL_EXT_ERR_MST		0x3
#define F10_NBSL_EXT_ERR_TGT		0x4
#define F10_NBSL_EXT_ERR_GART		0x5
#define F10_NBSL_EXT_ERR_RMW		0x6
#define F10_NBSL_EXT_ERR_WDT		0x7
#define F10_NBSL_EXT_ERR_ECC		0x8
#define F10_NBSL_EXT_ERR_DEV		0x9
#define F10_NBSL_EXT_ERR_LINK_DATA	0xA

/* Next two are overloaded values */
#define F10_NBSL_EXT_ERR_LINK_PROTO	0xB
#define F10_NBSL_EXT_ERR_L3_PROTO	0xB

#define F10_NBSL_EXT_ERR_NB_ARRAY	0xC
#define F10_NBSL_EXT_ERR_DRAM_PARITY	0xD
#define F10_NBSL_EXT_ERR_LINK_RETRY	0xE

/* Next two are overloaded values */
#define F10_NBSL_EXT_ERR_GART_WALK	0xF
#define F10_NBSL_EXT_ERR_DEV_WALK	0xF

/* 0x10 to 0x1B: Reserved */
#define F10_NBSL_EXT_ERR_L3_DATA	0x1C
#define F10_NBSL_EXT_ERR_L3_TAG		0x1D
#define F10_NBSL_EXT_ERR_L3_LRU		0x1E

/* K8: Normalized Extended Error Codes */
#define K8_NBSL_EXT_ERR_ECC		0x0
#define K8_NBSL_EXT_ERR_CRC		0x1
#define K8_NBSL_EXT_ERR_SYNC		0x2
#define K8_NBSL_EXT_ERR_MST		0x3
#define K8_NBSL_EXT_ERR_TGT		0x4
#define K8_NBSL_EXT_ERR_GART		0x5
#define K8_NBSL_EXT_ERR_RMW		0x6
#define K8_NBSL_EXT_ERR_WDT		0x7
#define K8_NBSL_EXT_ERR_CHIPKILL_ECC	0x8
#define K8_NBSL_EXT_ERR_DRAM_PARITY	0xD

/*
 * The following are for BUS type errors AFTER values have been normalized by
 * shifting right
 */
#define K8_NBSL_PP_SRC			0x0
#define K8_NBSL_PP_RES			0x1
#define K8_NBSL_PP_OBS			0x2
#define K8_NBSL_PP_GENERIC		0x3


#define K8_NBSH				0x4C

#define K8_NBSH_VALID_BIT		BIT(31)
#define K8_NBSH_OVERFLOW		BIT(30)
#define K8_NBSH_UNCORRECTED_ERR		BIT(29)
#define K8_NBSH_ERR_ENABLE		BIT(28)
#define K8_NBSH_MISC_ERR_VALID		BIT(27)
#define K8_NBSH_VALID_ERROR_ADDR	BIT(26)
#define K8_NBSH_PCC			BIT(25)
#define K8_NBSH_CECC			BIT(14)
#define K8_NBSH_UECC			BIT(13)
#define K8_NBSH_ERR_SCRUBER		BIT(8)
#define K8_NBSH_CORE3			BIT(3)
#define K8_NBSH_CORE2			BIT(2)
#define K8_NBSH_CORE1			BIT(1)
#define K8_NBSH_CORE0			BIT(0)

#define EXTRACT_ERR_CPU_MAP(x)		((x) & 0xF)


#define K8_NBEAL			0x50
#define K8_NBEAH			0x54
#define K8_SCRCTRL			0x58

#define F10_NB_CFG_LOW			0x88
#define	F10_NB_CFG_LOW_ENABLE_EXT_CFG	BIT(14)

#define F10_NB_CFG_HIGH			0x8C

#define F10_ONLINE_SPARE		0xB0
#define F10_ONLINE_SPARE_SWAPDONE0(x)	((x) & BIT(1))
#define F10_ONLINE_SPARE_SWAPDONE1(x)	((x) & BIT(3))
#define F10_ONLINE_SPARE_BADDRAM_CS0(x) (((x) >> 4) & 0x00000007)
#define F10_ONLINE_SPARE_BADDRAM_CS1(x) (((x) >> 8) & 0x00000007)

#define F10_NB_ARRAY_ADDR		0xB8

#define F10_NB_ARRAY_DRAM_ECC		0x80000000

/* Bits [2:1] are used to select 16-byte section within a 64-byte cacheline  */
#define SET_NB_ARRAY_ADDRESS(section)	(((section) & 0x3) << 1)

#define F10_NB_ARRAY_DATA		0xBC

#define SET_NB_DRAM_INJECTION_WRITE(word, bits)  \
					(BIT(((word) & 0xF) + 20) | \
					BIT(17) |  \
					((bits) & 0xF))

#define SET_NB_DRAM_INJECTION_READ(word, bits)  \
					(BIT(((word) & 0xF) + 20) | \
					BIT(16) |  \
					((bits) & 0xF))

#define K8_NBCAP			0xE8
#define K8_NBCAP_CORES			(BIT(12)|BIT(13))
#define K8_NBCAP_CHIPKILL		BIT(4)
#define K8_NBCAP_SECDED			BIT(3)
#define K8_NBCAP_8_NODE			BIT(2)
#define K8_NBCAP_DUAL_NODE		BIT(1)
#define K8_NBCAP_DCT_DUAL		BIT(0)

/*
 * MSR Regs
 */
#define K8_MSR_MCGCTL			0x017b
#define K8_MSR_MCGCTL_NBE		BIT(4)

#define K8_MSR_MC4CTL			0x0410
#define K8_MSR_MC4STAT			0x0411
#define K8_MSR_MC4ADDR			0x0412

/* AMD sets the first MC device at device ID 0x18. */
static inline int get_node_id(struct pci_dev *pdev)
{
	return PCI_SLOT(pdev->devfn) - 0x18;
}

enum amd64_chipset_families {
	K8_CPUS = 0,
	F10_CPUS,
	F11_CPUS,
};

/*
 * Structure to hold:
 *
 * 1) dynamically read status and error address HW registers
 * 2) sysfs entered values
 * 3) MCE values
 *
 * Depends on entry into the modules
 */
struct amd64_error_info_regs {
	u32 nbcfg;
	u32 nbsh;
	u32 nbsl;
	u32 nbeah;
	u32 nbeal;
};

/* Error injection control structure */
struct error_injection {
	u32	section;
	u32	word;
	u32	bit_map;
};

struct amd64_pvt {
	/* pci_device handles which we utilize */
	struct pci_dev *addr_f1_ctl;
	struct pci_dev *dram_f2_ctl;
	struct pci_dev *misc_f3_ctl;

	int mc_node_id;		/* MC index of this MC node */
	int ext_model;		/* extended model value of this node */

	struct low_ops *ops;	/* pointer to per PCI Device ID func table */

	int channel_count;

	/* Raw registers */
	u32 dclr0;		/* DRAM Configuration Low DCT0 reg */
	u32 dclr1;		/* DRAM Configuration Low DCT1 reg */
	u32 dchr0;		/* DRAM Configuration High DCT0 reg */
	u32 dchr1;		/* DRAM Configuration High DCT1 reg */
	u32 nbcap;		/* North Bridge Capabilities */
	u32 nbcfg;		/* F10 North Bridge Configuration */
	u32 ext_nbcfg;		/* Extended F10 North Bridge Configuration */
	u32 dhar;		/* DRAM Hoist reg */
	u32 dbam0;		/* DRAM Base Address Mapping reg for DCT0 */
	u32 dbam1;		/* DRAM Base Address Mapping reg for DCT1 */

	/* DRAM CS Base Address Registers F2x[1,0][5C:40] */
	u32 dcsb0[CHIPSELECT_COUNT];
	u32 dcsb1[CHIPSELECT_COUNT];

	/* DRAM CS Mask Registers F2x[1,0][6C:60] */
	u32 dcsm0[CHIPSELECT_COUNT];
	u32 dcsm1[CHIPSELECT_COUNT];

	/*
	 * Decoded parts of DRAM BASE and LIMIT Registers
	 * F1x[78,70,68,60,58,50,48,40]
	 */
	u64 dram_base[DRAM_REG_COUNT];
	u64 dram_limit[DRAM_REG_COUNT];
	u8  dram_IntlvSel[DRAM_REG_COUNT];
	u8  dram_IntlvEn[DRAM_REG_COUNT];
	u8  dram_DstNode[DRAM_REG_COUNT];
	u8  dram_rw_en[DRAM_REG_COUNT];

	/*
	 * The following fields are set at (load) run time, after CPU revision
	 * has been determined, since the dct_base and dct_mask registers vary
	 * based on revision
	 */
	u32 dcsb_base;		/* DCSB base bits */
	u32 dcsm_mask;		/* DCSM mask bits */
	u32 num_dcsm;		/* Number of DCSM registers */
	u32 dcs_mask_notused;	/* DCSM notused mask bits */
	u32 dcs_shift;		/* DCSB and DCSM shift value */

	u64 top_mem;		/* top of memory below 4GB */
	u64 top_mem2;		/* top of memory above 4GB */

	u32 dram_ctl_select_low;	/* DRAM Controller Select Low Reg */
	u32 dram_ctl_select_high;	/* DRAM Controller Select High Reg */
	u32 online_spare;               /* On-Line spare Reg */

	/* temp storage for when input is received from sysfs */
	struct amd64_error_info_regs ctl_error_info;

	/* place to store error injection parameters prior to issue */
	struct error_injection injection;

	/* Save old hw registers' values before we modified them */
	u32 nbctl_mcgctl_saved;		/* When true, following 2 are valid */
	u32 old_nbctl;
	unsigned long old_mcgctl;	/* per core on this node */

	/* MC Type Index value: socket F vs Family 10h */
	u32 mc_type_index;

	/* misc settings */
	struct flags {
		unsigned long cf8_extcfg:1;
	} flags;
};

struct scrubrate {
       u32 scrubval;           /* bit pattern for scrub rate */
       u32 bandwidth;          /* bandwidth consumed (bytes/sec) */
};

extern struct scrubrate scrubrates[23];
extern u32 revf_quad_ddr2_shift[16];
extern const char *tt_msgs[4];
extern const char *ll_msgs[4];
extern const char *rrrr_msgs[16];
extern const char *to_msgs[2];
extern const char *pp_msgs[4];
extern const char *ii_msgs[4];
extern const char *ext_msgs[32];
extern const char *htlink_msgs[8];

#ifdef CONFIG_EDAC_DEBUG
#define NUM_DBG_ATTRS 9
#else
#define NUM_DBG_ATTRS 0
#endif

#ifdef CONFIG_EDAC_AMD64_ERROR_INJECTION
#define NUM_INJ_ATTRS 5
#else
#define NUM_INJ_ATTRS 0
#endif

extern struct mcidev_sysfs_attribute amd64_dbg_attrs[NUM_DBG_ATTRS],
				     amd64_inj_attrs[NUM_INJ_ATTRS];

/*
 * Each of the PCI Device IDs types have their own set of hardware accessor
 * functions and per device encoding/decoding logic.
 */
struct low_ops {
	int (*probe_valid_hardware)(struct amd64_pvt *pvt);
	int (*early_channel_count)(struct amd64_pvt *pvt);

	u64 (*get_error_address)(struct mem_ctl_info *mci,
			struct amd64_error_info_regs *info);
	void (*read_dram_base_limit)(struct amd64_pvt *pvt, int dram);
	void (*read_dram_ctl_register)(struct amd64_pvt *pvt);
	void (*map_sysaddr_to_csrow)(struct mem_ctl_info *mci,
					struct amd64_error_info_regs *info,
					u64 SystemAddr);
	int (*dbam_map_to_pages)(struct amd64_pvt *pvt, int dram_map);
};

struct amd64_family_type {
	const char *ctl_name;
	u16 addr_f1_ctl;
	u16 misc_f3_ctl;
	struct low_ops ops;
};

static struct amd64_family_type amd64_family_types[];

static inline const char *get_amd_family_name(int index)
{
	return amd64_family_types[index].ctl_name;
}

static inline struct low_ops *family_ops(int index)
{
	return &amd64_family_types[index].ops;
}

/*
 * For future CPU versions, verify the following as new 'slow' rates appear and
 * modify the necessary skip values for the supported CPU.
 */
#define K8_MIN_SCRUB_RATE_BITS	0x0
#define F10_MIN_SCRUB_RATE_BITS	0x5
#define F11_MIN_SCRUB_RATE_BITS	0x6

int amd64_process_error_info(struct mem_ctl_info *mci,
			     struct amd64_error_info_regs *info,
			     int handle_errors);
int amd64_get_dram_hole_info(struct mem_ctl_info *mci, u64 *hole_base,
			     u64 *hole_offset, u64 *hole_size);
Commit	Line	Data
cfe40fdb DT	1	/*
	2	* AMD64 class Memory Controller kernel module
	3	*
	4	* Copyright (c) 2009 SoftwareBitMaker.
	5	* Copyright (c) 2009 Advanced Micro Devices, Inc.
	6	*
	7	* This file may be distributed under the terms of the
	8	* GNU General Public License.
	9	*
	10	* Originally Written by Thayne Harbaugh
	11	*
	12	* Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
	13	* - K8 CPU Revision D and greater support
	14	*
	15	* Changes by Dave Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>:
	16	* - Module largely rewritten, with new (and hopefully correct)
	17	* code for dealing with node and chip select interleaving,
	18	* various code cleanup, and bug fixes
	19	* - Added support for memory hoisting using DRAM hole address
	20	* register
	21	*
	22	* Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
	23	* -K8 Rev (1207) revision support added, required Revision
	24	* specific mini-driver code to support Rev F as well as
	25	* prior revisions
	26	*
	27	* Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
	28	* -Family 10h revision support added. New PCI Device IDs,
	29	* indicating new changes. Actual registers modified
	30	* were slight, less than the Rev E to Rev F transition
	31	* but changing the PCI Device ID was the proper thing to
	32	* do, as it provides for almost automactic family
	33	* detection. The mods to Rev F required more family
	34	* information detection.
	35	*
	36	* Changes/Fixes by Borislav Petkov <borislav.petkov@amd.com>:
	37	* - misc fixes and code cleanups
	38	*
	39	* This module is based on the following documents
	40	* (available from http://www.amd.com/):
	41	*
	42	* Title: BIOS and Kernel Developer's Guide for AMD Athlon 64 and AMD
	43	* Opteron Processors
	44	* AMD publication #: 26094
	45	*` Revision: 3.26
	46	*
	47	* Title: BIOS and Kernel Developer's Guide for AMD NPT Family 0Fh
	48	* Processors
	49	* AMD publication #: 32559
	50	* Revision: 3.00
	51	* Issue Date: May 2006
	52	*
	53	* Title: BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h
	54	* Processors
	55	* AMD publication #: 31116
	56	* Revision: 3.00
	57	* Issue Date: September 07, 2007
	58	*
	59	* Sections in the first 2 documents are no longer in sync with each other.
	60	* The Family 10h BKDG was totally re-written from scratch with a new
	61	* presentation model.
	62	* Therefore, comments that refer to a Document section might be off.
	63	*/
	64
65	#include <linux/module.h>
66	#include <linux/ctype.h>
67	#include <linux/init.h>
68	#include <linux/pci.h>
69	#include <linux/pci_ids.h>
70	#include <linux/slab.h>
71	#include <linux/mmzone.h>
72	#include <linux/edac.h>
f9431992	73	#include <asm/msr.h>
cfe40fdb	74	#include "edac_core.h"
b70ef010	75	#include "edac_mce_amd.h"
cfe40fdb DT	76
	77	#define amd64_printk(level, fmt, arg...) \
	78	edac_printk(level, "amd64", fmt, ##arg)
	79
	80	#define amd64_mc_printk(mci, level, fmt, arg...) \
	81	edac_mc_chipset_printk(mci, level, "amd64", fmt, ##arg)
	82
	83	/*
	84	* Throughout the comments in this code, the following terms are used:
	85	*
	86	* SysAddr, DramAddr, and InputAddr
	87	*
	88	* These terms come directly from the amd64 documentation
	89	* (AMD publication #26094). They are defined as follows:
	90	*
	91	* SysAddr:
	92	* This is a physical address generated by a CPU core or a device
	93	* doing DMA. If generated by a CPU core, a SysAddr is the result of
	94	* a virtual to physical address translation by the CPU core's address
	95	* translation mechanism (MMU).
	96	*
	97	* DramAddr:
	98	* A DramAddr is derived from a SysAddr by subtracting an offset that
	99	* depends on which node the SysAddr maps to and whether the SysAddr
	100	* is within a range affected by memory hoisting. The DRAM Base
	101	* (section 3.4.4.1) and DRAM Limit (section 3.4.4.2) registers
	102	* determine which node a SysAddr maps to.
	103	*
	104	* If the DRAM Hole Address Register (DHAR) is enabled and the SysAddr
	105	* is within the range of addresses specified by this register, then
	106	* a value x from the DHAR is subtracted from the SysAddr to produce a
	107	* DramAddr. Here, x represents the base address for the node that
	108	* the SysAddr maps to plus an offset due to memory hoisting. See
	109	* section 3.4.8 and the comments in amd64_get_dram_hole_info() and
	110	* sys_addr_to_dram_addr() below for more information.
	111	*
	112	* If the SysAddr is not affected by the DHAR then a value y is
	113	* subtracted from the SysAddr to produce a DramAddr. Here, y is the
	114	* base address for the node that the SysAddr maps to. See section
	115	* 3.4.4 and the comments in sys_addr_to_dram_addr() below for more
	116	* information.
	117	*
	118	* InputAddr:
	119	* A DramAddr is translated to an InputAddr before being passed to the
	120	* memory controller for the node that the DramAddr is associated
	121	* with. The memory controller then maps the InputAddr to a csrow.
	122	* If node interleaving is not in use, then the InputAddr has the same
	123	* value as the DramAddr. Otherwise, the InputAddr is produced by
	124	* discarding the bits used for node interleaving from the DramAddr.
	125	* See section 3.4.4 for more information.
	126	*
	127	* The memory controller for a given node uses its DRAM CS Base and
	128	* DRAM CS Mask registers to map an InputAddr to a csrow. See
	129	* sections 3.5.4 and 3.5.5 for more information.
	130	*/
	131
	132	#define EDAC_AMD64_VERSION " Ver: 3.2.0 " __DATE__
	133	#define EDAC_MOD_STR "amd64_edac"
	134
	135	/* Extended Model from CPUID, for CPU Revision numbers */
	136	#define OPTERON_CPU_LE_REV_C 0
	137	#define OPTERON_CPU_REV_D 1
	138	#define OPTERON_CPU_REV_E 2
	139
140	/* NPT processors have the following Extended Models */
141	#define OPTERON_CPU_REV_F 4
142	#define OPTERON_CPU_REV_FA 5
143
144	/* Hardware limit on ChipSelect rows per MC and processors per system */
145	#define CHIPSELECT_COUNT 8
146	#define DRAM_REG_COUNT 8
147
148
149	/*
150	* PCI-defined configuration space registers
151	*/
152
153
154	/*
155	* Function 1 - Address Map
156	*/
157	#define K8_DRAM_BASE_LOW 0x40
158	#define K8_DRAM_LIMIT_LOW 0x44
159	#define K8_DHAR 0xf0
160
161	#define DHAR_VALID BIT(0)
162	#define F10_DRAM_MEM_HOIST_VALID BIT(1)
163
164	#define DHAR_BASE_MASK 0xff000000
165	#define dhar_base(dhar) (dhar & DHAR_BASE_MASK)
166
167	#define K8_DHAR_OFFSET_MASK 0x0000ff00
168	#define k8_dhar_offset(dhar) ((dhar & K8_DHAR_OFFSET_MASK) << 16)
169
170	#define F10_DHAR_OFFSET_MASK 0x0000ff80
171	/* NOTE: Extra mask bit vs K8 */
172	#define f10_dhar_offset(dhar) ((dhar & F10_DHAR_OFFSET_MASK) << 16)
173
174
175	/* F10 High BASE/LIMIT registers */
176	#define F10_DRAM_BASE_HIGH 0x140
177	#define F10_DRAM_LIMIT_HIGH 0x144
178
179
180	/*
181	* Function 2 - DRAM controller
182	*/
183	#define K8_DCSB0 0x40
184	#define F10_DCSB1 0x140
185
186	#define K8_DCSB_CS_ENABLE BIT(0)
187	#define K8_DCSB_NPT_SPARE BIT(1)
188	#define K8_DCSB_NPT_TESTFAIL BIT(2)
189
190	/*
191	* REV E: select [31:21] and [15:9] from DCSB and the shift amount to form
192	* the address
193	*/
194	#define REV_E_DCSB_BASE_BITS (0xFFE0FE00ULL)
195	#define REV_E_DCS_SHIFT 4
196	#define REV_E_DCSM_COUNT 8
197
198	#define REV_F_F1Xh_DCSB_BASE_BITS (0x1FF83FE0ULL)
199	#define REV_F_F1Xh_DCS_SHIFT 8
200
201	/*
202	* REV F and later: selects [28:19] and [13:5] from DCSB and the shift amount
203	* to form the address
204	*/
205	#define REV_F_DCSB_BASE_BITS (0x1FF83FE0ULL)
206	#define REV_F_DCS_SHIFT 8
207	#define REV_F_DCSM_COUNT 4
208	#define F10_DCSM_COUNT 4
209	#define F11_DCSM_COUNT 2
210
211	/* DRAM CS Mask Registers */
212	#define K8_DCSM0 0x60
213	#define F10_DCSM1 0x160
214
215	/* REV E: select [29:21] and [15:9] from DCSM */
216	#define REV_E_DCSM_MASK_BITS 0x3FE0FE00
217
218	/* unused bits [24:20] and [12:0] */
219	#define REV_E_DCS_NOTUSED_BITS 0x01F01FFF
220
221	/* REV F and later: select [28:19] and [13:5] from DCSM */
222	#define REV_F_F1Xh_DCSM_MASK_BITS 0x1FF83FE0
223
224	/* unused bits [26:22] and [12:0] */
225	#define REV_F_F1Xh_DCS_NOTUSED_BITS 0x07C01FFF
226
227	#define DBAM0 0x80
228	#define DBAM1 0x180
229
230	/* Extract the DIMM 'type' on the i'th DIMM from the DBAM reg value passed */
231	#define DBAM_DIMM(i, reg) ((((reg) >> (4*i))) & 0xF)
232
233	#define DBAM_MAX_VALUE 11
234
235
236	#define F10_DCLR_0 0x90
237	#define F10_DCLR_1 0x190
238	#define REVE_WIDTH_128 BIT(16)
239	#define F10_WIDTH_128 BIT(11)
240
241
242	#define F10_DCHR_0 0x94
243	#define F10_DCHR_1 0x194
244
245	#define F10_DCHR_FOUR_RANK_DIMM BIT(18)
246	#define F10_DCHR_Ddr3Mode BIT(8)
247	#define F10_DCHR_MblMode BIT(6)
248
249
250	#define F10_DCTL_SEL_LOW 0x110
251
252	#define dct_sel_baseaddr(pvt) \
253	((pvt->dram_ctl_select_low) & 0xFFFFF800)
254
255	#define dct_sel_interleave_addr(pvt) \
256	(((pvt->dram_ctl_select_low) >> 6) & 0x3)
257
258	enum {
259	F10_DCTL_SEL_LOW_DctSelHiRngEn = BIT(0),
260	F10_DCTL_SEL_LOW_DctSelIntLvEn = BIT(2),
261	F10_DCTL_SEL_LOW_DctGangEn = BIT(4),
262	F10_DCTL_SEL_LOW_DctDatIntLv = BIT(5),
263	F10_DCTL_SEL_LOW_DramEnable = BIT(8),
264	F10_DCTL_SEL_LOW_MemCleared = BIT(10),
265	};
266
267	#define dct_high_range_enabled(pvt) \
268	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctSelHiRngEn)
269
270	#define dct_interleave_enabled(pvt) \
271	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctSelIntLvEn)
272
273	#define dct_ganging_enabled(pvt) \
274	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctGangEn)
275
276	#define dct_data_intlv_enabled(pvt) \
277	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctDatIntLv)
278
279	#define dct_dram_enabled(pvt) \
280	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DramEnable)
281
282	#define dct_memory_cleared(pvt) \
283	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_MemCleared)
284
285
286	#define F10_DCTL_SEL_HIGH 0x114
287
288
289	/*
290	* Function 3 - Misc Control
291	*/
292	#define K8_NBCTL 0x40
293
294	/* Correctable ECC error reporting enable */
295	#define K8_NBCTL_CECCEn BIT(0)
296
297	/* UnCorrectable ECC error reporting enable */
298	#define K8_NBCTL_UECCEn BIT(1)
299
300	#define K8_NBCFG 0x44
301	#define K8_NBCFG_CHIPKILL BIT(23)
302	#define K8_NBCFG_ECC_ENABLE BIT(22)
303
304	#define K8_NBSL 0x48
305
306
cfe40fdb DT	307	/* Family F10h: Normalized Extended Error Codes */
	308	#define F10_NBSL_EXT_ERR_RES 0x0
	309	#define F10_NBSL_EXT_ERR_CRC 0x1
	310	#define F10_NBSL_EXT_ERR_SYNC 0x2
	311	#define F10_NBSL_EXT_ERR_MST 0x3
	312	#define F10_NBSL_EXT_ERR_TGT 0x4
	313	#define F10_NBSL_EXT_ERR_GART 0x5
	314	#define F10_NBSL_EXT_ERR_RMW 0x6
	315	#define F10_NBSL_EXT_ERR_WDT 0x7
	316	#define F10_NBSL_EXT_ERR_ECC 0x8
	317	#define F10_NBSL_EXT_ERR_DEV 0x9
	318	#define F10_NBSL_EXT_ERR_LINK_DATA 0xA
	319
	320	/* Next two are overloaded values */
	321	#define F10_NBSL_EXT_ERR_LINK_PROTO 0xB
	322	#define F10_NBSL_EXT_ERR_L3_PROTO 0xB
	323
	324	#define F10_NBSL_EXT_ERR_NB_ARRAY 0xC
	325	#define F10_NBSL_EXT_ERR_DRAM_PARITY 0xD
	326	#define F10_NBSL_EXT_ERR_LINK_RETRY 0xE
	327
	328	/* Next two are overloaded values */
	329	#define F10_NBSL_EXT_ERR_GART_WALK 0xF
	330	#define F10_NBSL_EXT_ERR_DEV_WALK 0xF
	331
	332	/* 0x10 to 0x1B: Reserved */
	333	#define F10_NBSL_EXT_ERR_L3_DATA 0x1C
	334	#define F10_NBSL_EXT_ERR_L3_TAG 0x1D
	335	#define F10_NBSL_EXT_ERR_L3_LRU 0x1E
	336
	337	/* K8: Normalized Extended Error Codes */
	338	#define K8_NBSL_EXT_ERR_ECC 0x0
	339	#define K8_NBSL_EXT_ERR_CRC 0x1
	340	#define K8_NBSL_EXT_ERR_SYNC 0x2
	341	#define K8_NBSL_EXT_ERR_MST 0x3
	342	#define K8_NBSL_EXT_ERR_TGT 0x4
	343	#define K8_NBSL_EXT_ERR_GART 0x5
	344	#define K8_NBSL_EXT_ERR_RMW 0x6
	345	#define K8_NBSL_EXT_ERR_WDT 0x7
	346	#define K8_NBSL_EXT_ERR_CHIPKILL_ECC 0x8
	347	#define K8_NBSL_EXT_ERR_DRAM_PARITY 0xD
	348
cfe40fdb DT	349	/*
	350	* The following are for BUS type errors AFTER values have been normalized by
	351	* shifting right
	352	*/
	353	#define K8_NBSL_PP_SRC 0x0
	354	#define K8_NBSL_PP_RES 0x1
	355	#define K8_NBSL_PP_OBS 0x2
	356	#define K8_NBSL_PP_GENERIC 0x3
	357
	358
	359	#define K8_NBSH 0x4C
	360
	361	#define K8_NBSH_VALID_BIT BIT(31)
	362	#define K8_NBSH_OVERFLOW BIT(30)
	363	#define K8_NBSH_UNCORRECTED_ERR BIT(29)
	364	#define K8_NBSH_ERR_ENABLE BIT(28)
	365	#define K8_NBSH_MISC_ERR_VALID BIT(27)
	366	#define K8_NBSH_VALID_ERROR_ADDR BIT(26)
	367	#define K8_NBSH_PCC BIT(25)
	368	#define K8_NBSH_CECC BIT(14)
	369	#define K8_NBSH_UECC BIT(13)
	370	#define K8_NBSH_ERR_SCRUBER BIT(8)
	371	#define K8_NBSH_CORE3 BIT(3)
	372	#define K8_NBSH_CORE2 BIT(2)
	373	#define K8_NBSH_CORE1 BIT(1)
	374	#define K8_NBSH_CORE0 BIT(0)
	375
cfe40fdb	376	#define EXTRACT_ERR_CPU_MAP(x) ((x) & 0xF)
cfe40fdb DT	377
	378
	379	#define K8_NBEAL 0x50
	380	#define K8_NBEAH 0x54
	381	#define K8_SCRCTRL 0x58
	382
	383	#define F10_NB_CFG_LOW 0x88
	384	#define F10_NB_CFG_LOW_ENABLE_EXT_CFG BIT(14)
	385
	386	#define F10_NB_CFG_HIGH 0x8C
	387
	388	#define F10_ONLINE_SPARE 0xB0
	389	#define F10_ONLINE_SPARE_SWAPDONE0(x) ((x) & BIT(1))
	390	#define F10_ONLINE_SPARE_SWAPDONE1(x) ((x) & BIT(3))
	391	#define F10_ONLINE_SPARE_BADDRAM_CS0(x) (((x) >> 4) & 0x00000007)
	392	#define F10_ONLINE_SPARE_BADDRAM_CS1(x) (((x) >> 8) & 0x00000007)
	393
	394	#define F10_NB_ARRAY_ADDR 0xB8
	395
	396	#define F10_NB_ARRAY_DRAM_ECC 0x80000000
	397
	398	/* Bits [2:1] are used to select 16-byte section within a 64-byte cacheline */
	399	#define SET_NB_ARRAY_ADDRESS(section) (((section) & 0x3) << 1)
	400
	401	#define F10_NB_ARRAY_DATA 0xBC
	402
	403	#define SET_NB_DRAM_INJECTION_WRITE(word, bits) \
	404	(BIT(((word) & 0xF) + 20) \| \
	405	BIT(17) \| \
	406	((bits) & 0xF))
	407
	408	#define SET_NB_DRAM_INJECTION_READ(word, bits) \
	409	(BIT(((word) & 0xF) + 20) \| \
	410	BIT(16) \| \
	411	((bits) & 0xF))
	412
	413	#define K8_NBCAP 0xE8
	414	#define K8_NBCAP_CORES (BIT(12)\|BIT(13))
	415	#define K8_NBCAP_CHIPKILL BIT(4)
	416	#define K8_NBCAP_SECDED BIT(3)
	417	#define K8_NBCAP_8_NODE BIT(2)
	418	#define K8_NBCAP_DUAL_NODE BIT(1)
	419	#define K8_NBCAP_DCT_DUAL BIT(0)
	420
	421	/*
	422	* MSR Regs
	423	*/
	424	#define K8_MSR_MCGCTL 0x017b
	425	#define K8_MSR_MCGCTL_NBE BIT(4)
	426
	427	#define K8_MSR_MC4CTL 0x0410
	428	#define K8_MSR_MC4STAT 0x0411
	429	#define K8_MSR_MC4ADDR 0x0412
	430
	431	/* AMD sets the first MC device at device ID 0x18. */
37da0450	432	static inline int get_node_id(struct pci_dev *pdev)
cfe40fdb DT	433	{
	434	return PCI_SLOT(pdev->devfn) - 0x18;
	435	}
	436
	437	enum amd64_chipset_families {
	438	K8_CPUS = 0,
	439	F10_CPUS,
	440	F11_CPUS,
	441	};
	442
	443	/*
	444	* Structure to hold:
	445	*
	446	* 1) dynamically read status and error address HW registers
	447	* 2) sysfs entered values
	448	* 3) MCE values
	449	*
	450	* Depends on entry into the modules
	451	*/
	452	struct amd64_error_info_regs {
	453	u32 nbcfg;
	454	u32 nbsh;
	455	u32 nbsl;
	456	u32 nbeah;
	457	u32 nbeal;
	458	};
	459
	460	/* Error injection control structure */
	461	struct error_injection {
	462	u32 section;
	463	u32 word;
	464	u32 bit_map;
	465	};
	466
	467	struct amd64_pvt {
	468	/* pci_device handles which we utilize */
	469	struct pci_dev *addr_f1_ctl;
	470	struct pci_dev *dram_f2_ctl;
	471	struct pci_dev *misc_f3_ctl;
	472
	473	int mc_node_id; /* MC index of this MC node */
	474	int ext_model; /* extended model value of this node */
	475
	476	struct low_ops ops; / pointer to per PCI Device ID func table */
	477
	478	int channel_count;
	479
	480	/* Raw registers */
	481	u32 dclr0; /* DRAM Configuration Low DCT0 reg */
	482	u32 dclr1; /* DRAM Configuration Low DCT1 reg */
	483	u32 dchr0; /* DRAM Configuration High DCT0 reg */
	484	u32 dchr1; /* DRAM Configuration High DCT1 reg */
	485	u32 nbcap; /* North Bridge Capabilities */
	486	u32 nbcfg; /* F10 North Bridge Configuration */
	487	u32 ext_nbcfg; /* Extended F10 North Bridge Configuration */
	488	u32 dhar; /* DRAM Hoist reg */
	489	u32 dbam0; /* DRAM Base Address Mapping reg for DCT0 */
	490	u32 dbam1; /* DRAM Base Address Mapping reg for DCT1 */
	491
	492	/* DRAM CS Base Address Registers F2x[1,0][5C:40] */
	493	u32 dcsb0[CHIPSELECT_COUNT];
	494	u32 dcsb1[CHIPSELECT_COUNT];
	495
	496	/* DRAM CS Mask Registers F2x[1,0][6C:60] */
497	u32 dcsm0[CHIPSELECT_COUNT];
498	u32 dcsm1[CHIPSELECT_COUNT];
499
500	/*
501	* Decoded parts of DRAM BASE and LIMIT Registers
502	* F1x[78,70,68,60,58,50,48,40]
503	*/
504	u64 dram_base[DRAM_REG_COUNT];
505	u64 dram_limit[DRAM_REG_COUNT];
506	u8 dram_IntlvSel[DRAM_REG_COUNT];
507	u8 dram_IntlvEn[DRAM_REG_COUNT];
508	u8 dram_DstNode[DRAM_REG_COUNT];
509	u8 dram_rw_en[DRAM_REG_COUNT];
510
511	/*
512	* The following fields are set at (load) run time, after CPU revision
513	* has been determined, since the dct_base and dct_mask registers vary
514	* based on revision
515	*/
516	u32 dcsb_base; /* DCSB base bits */
517	u32 dcsm_mask; /* DCSM mask bits */
518	u32 num_dcsm; /* Number of DCSM registers */
519	u32 dcs_mask_notused; /* DCSM notused mask bits */
520	u32 dcs_shift; /* DCSB and DCSM shift value */
521
522	u64 top_mem; /* top of memory below 4GB */
523	u64 top_mem2; /* top of memory above 4GB */
524
525	u32 dram_ctl_select_low; /* DRAM Controller Select Low Reg */
526	u32 dram_ctl_select_high; /* DRAM Controller Select High Reg */
527	u32 online_spare; /* On-Line spare Reg */
528
529	/* temp storage for when input is received from sysfs */
530	struct amd64_error_info_regs ctl_error_info;
531
532	/* place to store error injection parameters prior to issue */
533	struct error_injection injection;
534
535	/* Save old hw registers' values before we modified them */
536	u32 nbctl_mcgctl_saved; /* When true, following 2 are valid */
537	u32 old_nbctl;
f9431992	538	unsigned long old_mcgctl; /* per core on this node */
cfe40fdb DT	539
	540	/* MC Type Index value: socket F vs Family 10h */
	541	u32 mc_type_index;
	542
	543	/* misc settings */
	544	struct flags {
	545	unsigned long cf8_extcfg:1;
	546	} flags;
	547	};
	548
	549	struct scrubrate {
	550	u32 scrubval; /* bit pattern for scrub rate */
	551	u32 bandwidth; /* bandwidth consumed (bytes/sec) */
	552	};
	553
	554	extern struct scrubrate scrubrates[23];
	555	extern u32 revf_quad_ddr2_shift[16];
	556	extern const char *tt_msgs[4];
	557	extern const char *ll_msgs[4];
	558	extern const char *rrrr_msgs[16];
	559	extern const char *to_msgs[2];
	560	extern const char *pp_msgs[4];
	561	extern const char *ii_msgs[4];
	562	extern const char *ext_msgs[32];
	563	extern const char *htlink_msgs[8];
	564
7d6034d3 DT	565	#ifdef CONFIG_EDAC_DEBUG
	566	#define NUM_DBG_ATTRS 9
	567	#else
	568	#define NUM_DBG_ATTRS 0
	569	#endif
	570
	571	#ifdef CONFIG_EDAC_AMD64_ERROR_INJECTION
	572	#define NUM_INJ_ATTRS 5
	573	#else
	574	#define NUM_INJ_ATTRS 0
	575	#endif
	576
	577	extern struct mcidev_sysfs_attribute amd64_dbg_attrs[NUM_DBG_ATTRS],
	578	amd64_inj_attrs[NUM_INJ_ATTRS];
	579
cfe40fdb DT	580	/*
	581	* Each of the PCI Device IDs types have their own set of hardware accessor
	582	* functions and per device encoding/decoding logic.
	583	*/
	584	struct low_ops {
	585	int (probe_valid_hardware)(struct amd64_pvt pvt);
	586	int (early_channel_count)(struct amd64_pvt pvt);
	587
	588	u64 (get_error_address)(struct mem_ctl_info mci,
	589	struct amd64_error_info_regs *info);
	590	void (read_dram_base_limit)(struct amd64_pvt pvt, int dram);
	591	void (read_dram_ctl_register)(struct amd64_pvt pvt);
	592	void (map_sysaddr_to_csrow)(struct mem_ctl_info mci,
	593	struct amd64_error_info_regs *info,
	594	u64 SystemAddr);
	595	int (dbam_map_to_pages)(struct amd64_pvt pvt, int dram_map);
	596	};
	597
	598	struct amd64_family_type {
	599	const char *ctl_name;
	600	u16 addr_f1_ctl;
	601	u16 misc_f3_ctl;
	602	struct low_ops ops;
	603	};
	604
	605	static struct amd64_family_type amd64_family_types[];
	606
	607	static inline const char *get_amd_family_name(int index)
	608	{
	609	return amd64_family_types[index].ctl_name;
	610	}
	611
	612	static inline struct low_ops *family_ops(int index)
	613	{
	614	return &amd64_family_types[index].ops;
	615	}
	616
	617	/*
	618	* For future CPU versions, verify the following as new 'slow' rates appear and
	619	* modify the necessary skip values for the supported CPU.
	620	*/
	621	#define K8_MIN_SCRUB_RATE_BITS 0x0
	622	#define F10_MIN_SCRUB_RATE_BITS 0x5
	623	#define F11_MIN_SCRUB_RATE_BITS 0x6
	624
	625	int amd64_process_error_info(struct mem_ctl_info *mci,
	626	struct amd64_error_info_regs *info,
	627	int handle_errors);
	628	int amd64_get_dram_hole_info(struct mem_ctl_info mci, u64 hole_base,
	629	u64 hole_offset, u64 hole_size);