[linux-2.6-block.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 "edac_core.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


#define EXTRACT_HIGH_SYNDROME(x)	(((x) >> 24) & 0xff)
#define EXTRACT_EXT_ERROR_CODE(x)	(((x) >> 16) & 0x1f)

/* 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

#define EXTRACT_ERROR_CODE(x)		((x) & 0xffff)
#define	TEST_TLB_ERROR(x)		(((x) & 0xFFF0) == 0x0010)
#define	TEST_MEM_ERROR(x)		(((x) & 0xFF00) == 0x0100)
#define	TEST_BUS_ERROR(x)		(((x) & 0xF800) == 0x0800)
#define	EXTRACT_TT_CODE(x)		(((x) >> 2) & 0x3)
#define	EXTRACT_II_CODE(x)		(((x) >> 2) & 0x3)
#define	EXTRACT_LL_CODE(x)		(((x) >> 0) & 0x3)
#define	EXTRACT_RRRR_CODE(x)		(((x) >> 4) & 0xf)
#define	EXTRACT_TO_CODE(x)		(((x) >> 8) & 0x1)
#define	EXTRACT_PP_CODE(x)		(((x) >> 9) & 0x3)

/*
 * 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_LDT_LINK(x)		(((x) >> 4) & 0x7)
#define EXTRACT_ERR_CPU_MAP(x)		((x) & 0xF)
#define EXTRACT_LOW_SYNDROME(x)		(((x) >> 15) & 0xff)


#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_mc_node_id_from_pdev(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;
	u32 *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];

/*
 * 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>
73	#include "edac_core.h"
74
75	#define amd64_printk(level, fmt, arg...) \
76	edac_printk(level, "amd64", fmt, ##arg)
77
78	#define amd64_mc_printk(mci, level, fmt, arg...) \
79	edac_mc_chipset_printk(mci, level, "amd64", fmt, ##arg)
80
81	/*
82	* Throughout the comments in this code, the following terms are used:
83	*
84	* SysAddr, DramAddr, and InputAddr
85	*
86	* These terms come directly from the amd64 documentation
87	* (AMD publication #26094). They are defined as follows:
88	*
89	* SysAddr:
90	* This is a physical address generated by a CPU core or a device
91	* doing DMA. If generated by a CPU core, a SysAddr is the result of
92	* a virtual to physical address translation by the CPU core's address
93	* translation mechanism (MMU).
94	*
95	* DramAddr:
96	* A DramAddr is derived from a SysAddr by subtracting an offset that
97	* depends on which node the SysAddr maps to and whether the SysAddr
98	* is within a range affected by memory hoisting. The DRAM Base
99	* (section 3.4.4.1) and DRAM Limit (section 3.4.4.2) registers
100	* determine which node a SysAddr maps to.
101	*
102	* If the DRAM Hole Address Register (DHAR) is enabled and the SysAddr
103	* is within the range of addresses specified by this register, then
104	* a value x from the DHAR is subtracted from the SysAddr to produce a
105	* DramAddr. Here, x represents the base address for the node that
106	* the SysAddr maps to plus an offset due to memory hoisting. See
107	* section 3.4.8 and the comments in amd64_get_dram_hole_info() and
108	* sys_addr_to_dram_addr() below for more information.
109	*
110	* If the SysAddr is not affected by the DHAR then a value y is
111	* subtracted from the SysAddr to produce a DramAddr. Here, y is the
112	* base address for the node that the SysAddr maps to. See section
113	* 3.4.4 and the comments in sys_addr_to_dram_addr() below for more
114	* information.
115	*
116	* InputAddr:
117	* A DramAddr is translated to an InputAddr before being passed to the
118	* memory controller for the node that the DramAddr is associated
119	* with. The memory controller then maps the InputAddr to a csrow.
120	* If node interleaving is not in use, then the InputAddr has the same
121	* value as the DramAddr. Otherwise, the InputAddr is produced by
122	* discarding the bits used for node interleaving from the DramAddr.
123	* See section 3.4.4 for more information.
124	*
125	* The memory controller for a given node uses its DRAM CS Base and
126	* DRAM CS Mask registers to map an InputAddr to a csrow. See
127	* sections 3.5.4 and 3.5.5 for more information.
128	*/
129
130	#define EDAC_AMD64_VERSION " Ver: 3.2.0 " __DATE__
131	#define EDAC_MOD_STR "amd64_edac"
132
133	/* Extended Model from CPUID, for CPU Revision numbers */
134	#define OPTERON_CPU_LE_REV_C 0
135	#define OPTERON_CPU_REV_D 1
136	#define OPTERON_CPU_REV_E 2
137
138	/* NPT processors have the following Extended Models */
139	#define OPTERON_CPU_REV_F 4
140	#define OPTERON_CPU_REV_FA 5
141
142	/* Hardware limit on ChipSelect rows per MC and processors per system */
143	#define CHIPSELECT_COUNT 8
144	#define DRAM_REG_COUNT 8
145
146
147	/*
148	* PCI-defined configuration space registers
149	*/
150
151
152	/*
153	* Function 1 - Address Map
154	*/
155	#define K8_DRAM_BASE_LOW 0x40
156	#define K8_DRAM_LIMIT_LOW 0x44
157	#define K8_DHAR 0xf0
158
159	#define DHAR_VALID BIT(0)
160	#define F10_DRAM_MEM_HOIST_VALID BIT(1)
161
162	#define DHAR_BASE_MASK 0xff000000
163	#define dhar_base(dhar) (dhar & DHAR_BASE_MASK)
164
165	#define K8_DHAR_OFFSET_MASK 0x0000ff00
166	#define k8_dhar_offset(dhar) ((dhar & K8_DHAR_OFFSET_MASK) << 16)
167
168	#define F10_DHAR_OFFSET_MASK 0x0000ff80
169	/* NOTE: Extra mask bit vs K8 */
170	#define f10_dhar_offset(dhar) ((dhar & F10_DHAR_OFFSET_MASK) << 16)
171
172
173	/* F10 High BASE/LIMIT registers */
174	#define F10_DRAM_BASE_HIGH 0x140
175	#define F10_DRAM_LIMIT_HIGH 0x144
176
177
178	/*
179	* Function 2 - DRAM controller
180	*/
181	#define K8_DCSB0 0x40
182	#define F10_DCSB1 0x140
183
184	#define K8_DCSB_CS_ENABLE BIT(0)
185	#define K8_DCSB_NPT_SPARE BIT(1)
186	#define K8_DCSB_NPT_TESTFAIL BIT(2)
187
188	/*
189	* REV E: select [31:21] and [15:9] from DCSB and the shift amount to form
190	* the address
191	*/
192	#define REV_E_DCSB_BASE_BITS (0xFFE0FE00ULL)
193	#define REV_E_DCS_SHIFT 4
194	#define REV_E_DCSM_COUNT 8
195
196	#define REV_F_F1Xh_DCSB_BASE_BITS (0x1FF83FE0ULL)
197	#define REV_F_F1Xh_DCS_SHIFT 8
198
199	/*
200	* REV F and later: selects [28:19] and [13:5] from DCSB and the shift amount
201	* to form the address
202	*/
203	#define REV_F_DCSB_BASE_BITS (0x1FF83FE0ULL)
204	#define REV_F_DCS_SHIFT 8
205	#define REV_F_DCSM_COUNT 4
206	#define F10_DCSM_COUNT 4
207	#define F11_DCSM_COUNT 2
208
209	/* DRAM CS Mask Registers */
210	#define K8_DCSM0 0x60
211	#define F10_DCSM1 0x160
212
213	/* REV E: select [29:21] and [15:9] from DCSM */
214	#define REV_E_DCSM_MASK_BITS 0x3FE0FE00
215
216	/* unused bits [24:20] and [12:0] */
217	#define REV_E_DCS_NOTUSED_BITS 0x01F01FFF
218
219	/* REV F and later: select [28:19] and [13:5] from DCSM */
220	#define REV_F_F1Xh_DCSM_MASK_BITS 0x1FF83FE0
221
222	/* unused bits [26:22] and [12:0] */
223	#define REV_F_F1Xh_DCS_NOTUSED_BITS 0x07C01FFF
224
225	#define DBAM0 0x80
226	#define DBAM1 0x180
227
228	/* Extract the DIMM 'type' on the i'th DIMM from the DBAM reg value passed */
229	#define DBAM_DIMM(i, reg) ((((reg) >> (4*i))) & 0xF)
230
231	#define DBAM_MAX_VALUE 11
232
233
234	#define F10_DCLR_0 0x90
235	#define F10_DCLR_1 0x190
236	#define REVE_WIDTH_128 BIT(16)
237	#define F10_WIDTH_128 BIT(11)
238
239
240	#define F10_DCHR_0 0x94
241	#define F10_DCHR_1 0x194
242
243	#define F10_DCHR_FOUR_RANK_DIMM BIT(18)
244	#define F10_DCHR_Ddr3Mode BIT(8)
245	#define F10_DCHR_MblMode BIT(6)
246
247
248	#define F10_DCTL_SEL_LOW 0x110
249
250	#define dct_sel_baseaddr(pvt) \
251	((pvt->dram_ctl_select_low) & 0xFFFFF800)
252
253	#define dct_sel_interleave_addr(pvt) \
254	(((pvt->dram_ctl_select_low) >> 6) & 0x3)
255
256	enum {
257	F10_DCTL_SEL_LOW_DctSelHiRngEn = BIT(0),
258	F10_DCTL_SEL_LOW_DctSelIntLvEn = BIT(2),
259	F10_DCTL_SEL_LOW_DctGangEn = BIT(4),
260	F10_DCTL_SEL_LOW_DctDatIntLv = BIT(5),
261	F10_DCTL_SEL_LOW_DramEnable = BIT(8),
262	F10_DCTL_SEL_LOW_MemCleared = BIT(10),
263	};
264
265	#define dct_high_range_enabled(pvt) \
266	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctSelHiRngEn)
267
268	#define dct_interleave_enabled(pvt) \
269	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctSelIntLvEn)
270
271	#define dct_ganging_enabled(pvt) \
272	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctGangEn)
273
274	#define dct_data_intlv_enabled(pvt) \
275	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctDatIntLv)
276
277	#define dct_dram_enabled(pvt) \
278	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DramEnable)
279
280	#define dct_memory_cleared(pvt) \
281	(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_MemCleared)
282
283
284	#define F10_DCTL_SEL_HIGH 0x114
285
286
287	/*
288	* Function 3 - Misc Control
289	*/
290	#define K8_NBCTL 0x40
291
292	/* Correctable ECC error reporting enable */
293	#define K8_NBCTL_CECCEn BIT(0)
294
295	/* UnCorrectable ECC error reporting enable */
296	#define K8_NBCTL_UECCEn BIT(1)
297
298	#define K8_NBCFG 0x44
299	#define K8_NBCFG_CHIPKILL BIT(23)
300	#define K8_NBCFG_ECC_ENABLE BIT(22)
301
302	#define K8_NBSL 0x48
303
304
305	#define EXTRACT_HIGH_SYNDROME(x) (((x) >> 24) & 0xff)
306	#define EXTRACT_EXT_ERROR_CODE(x) (((x) >> 16) & 0x1f)
307
308	/* Family F10h: Normalized Extended Error Codes */
309	#define F10_NBSL_EXT_ERR_RES 0x0
310	#define F10_NBSL_EXT_ERR_CRC 0x1
311	#define F10_NBSL_EXT_ERR_SYNC 0x2
312	#define F10_NBSL_EXT_ERR_MST 0x3
313	#define F10_NBSL_EXT_ERR_TGT 0x4
314	#define F10_NBSL_EXT_ERR_GART 0x5
315	#define F10_NBSL_EXT_ERR_RMW 0x6
316	#define F10_NBSL_EXT_ERR_WDT 0x7
317	#define F10_NBSL_EXT_ERR_ECC 0x8
318	#define F10_NBSL_EXT_ERR_DEV 0x9
319	#define F10_NBSL_EXT_ERR_LINK_DATA 0xA
320
321	/* Next two are overloaded values */
322	#define F10_NBSL_EXT_ERR_LINK_PROTO 0xB
323	#define F10_NBSL_EXT_ERR_L3_PROTO 0xB
324
325	#define F10_NBSL_EXT_ERR_NB_ARRAY 0xC
326	#define F10_NBSL_EXT_ERR_DRAM_PARITY 0xD
327	#define F10_NBSL_EXT_ERR_LINK_RETRY 0xE
328
329	/* Next two are overloaded values */
330	#define F10_NBSL_EXT_ERR_GART_WALK 0xF
331	#define F10_NBSL_EXT_ERR_DEV_WALK 0xF
332
333	/* 0x10 to 0x1B: Reserved */
334	#define F10_NBSL_EXT_ERR_L3_DATA 0x1C
335	#define F10_NBSL_EXT_ERR_L3_TAG 0x1D
336	#define F10_NBSL_EXT_ERR_L3_LRU 0x1E
337
338	/* K8: Normalized Extended Error Codes */
339	#define K8_NBSL_EXT_ERR_ECC 0x0
340	#define K8_NBSL_EXT_ERR_CRC 0x1
341	#define K8_NBSL_EXT_ERR_SYNC 0x2
342	#define K8_NBSL_EXT_ERR_MST 0x3
343	#define K8_NBSL_EXT_ERR_TGT 0x4
344	#define K8_NBSL_EXT_ERR_GART 0x5
345	#define K8_NBSL_EXT_ERR_RMW 0x6
346	#define K8_NBSL_EXT_ERR_WDT 0x7
347	#define K8_NBSL_EXT_ERR_CHIPKILL_ECC 0x8
348	#define K8_NBSL_EXT_ERR_DRAM_PARITY 0xD
349
350	#define EXTRACT_ERROR_CODE(x) ((x) & 0xffff)
351	#define TEST_TLB_ERROR(x) (((x) & 0xFFF0) == 0x0010)
352	#define TEST_MEM_ERROR(x) (((x) & 0xFF00) == 0x0100)
353	#define TEST_BUS_ERROR(x) (((x) & 0xF800) == 0x0800)
354	#define EXTRACT_TT_CODE(x) (((x) >> 2) & 0x3)
355	#define EXTRACT_II_CODE(x) (((x) >> 2) & 0x3)
356	#define EXTRACT_LL_CODE(x) (((x) >> 0) & 0x3)
357	#define EXTRACT_RRRR_CODE(x) (((x) >> 4) & 0xf)
358	#define EXTRACT_TO_CODE(x) (((x) >> 8) & 0x1)
359	#define EXTRACT_PP_CODE(x) (((x) >> 9) & 0x3)
360
361	/*
362	* The following are for BUS type errors AFTER values have been normalized by
363	* shifting right
364	*/
365	#define K8_NBSL_PP_SRC 0x0
366	#define K8_NBSL_PP_RES 0x1
367	#define K8_NBSL_PP_OBS 0x2
368	#define K8_NBSL_PP_GENERIC 0x3
369
370
371	#define K8_NBSH 0x4C
372
373	#define K8_NBSH_VALID_BIT BIT(31)
374	#define K8_NBSH_OVERFLOW BIT(30)
375	#define K8_NBSH_UNCORRECTED_ERR BIT(29)
376	#define K8_NBSH_ERR_ENABLE BIT(28)
377	#define K8_NBSH_MISC_ERR_VALID BIT(27)
378	#define K8_NBSH_VALID_ERROR_ADDR BIT(26)
379	#define K8_NBSH_PCC BIT(25)
380	#define K8_NBSH_CECC BIT(14)
381	#define K8_NBSH_UECC BIT(13)
382	#define K8_NBSH_ERR_SCRUBER BIT(8)
383	#define K8_NBSH_CORE3 BIT(3)
384	#define K8_NBSH_CORE2 BIT(2)
385	#define K8_NBSH_CORE1 BIT(1)
386	#define K8_NBSH_CORE0 BIT(0)
387
388	#define EXTRACT_LDT_LINK(x) (((x) >> 4) & 0x7)
389	#define EXTRACT_ERR_CPU_MAP(x) ((x) & 0xF)
390	#define EXTRACT_LOW_SYNDROME(x) (((x) >> 15) & 0xff)
391
392
393	#define K8_NBEAL 0x50
394	#define K8_NBEAH 0x54
395	#define K8_SCRCTRL 0x58
396
397	#define F10_NB_CFG_LOW 0x88
398	#define F10_NB_CFG_LOW_ENABLE_EXT_CFG BIT(14)
399
400	#define F10_NB_CFG_HIGH 0x8C
401
402	#define F10_ONLINE_SPARE 0xB0
403	#define F10_ONLINE_SPARE_SWAPDONE0(x) ((x) & BIT(1))
404	#define F10_ONLINE_SPARE_SWAPDONE1(x) ((x) & BIT(3))
405	#define F10_ONLINE_SPARE_BADDRAM_CS0(x) (((x) >> 4) & 0x00000007)
406	#define F10_ONLINE_SPARE_BADDRAM_CS1(x) (((x) >> 8) & 0x00000007)
407
408	#define F10_NB_ARRAY_ADDR 0xB8
409
410	#define F10_NB_ARRAY_DRAM_ECC 0x80000000
411
412	/* Bits [2:1] are used to select 16-byte section within a 64-byte cacheline */
413	#define SET_NB_ARRAY_ADDRESS(section) (((section) & 0x3) << 1)
414
415	#define F10_NB_ARRAY_DATA 0xBC
416
417	#define SET_NB_DRAM_INJECTION_WRITE(word, bits) \
418	(BIT(((word) & 0xF) + 20) \| \
419	BIT(17) \| \
420	((bits) & 0xF))
421
422	#define SET_NB_DRAM_INJECTION_READ(word, bits) \
423	(BIT(((word) & 0xF) + 20) \| \
424	BIT(16) \| \
425	((bits) & 0xF))
426
427	#define K8_NBCAP 0xE8
428	#define K8_NBCAP_CORES (BIT(12)\|BIT(13))
429	#define K8_NBCAP_CHIPKILL BIT(4)
430	#define K8_NBCAP_SECDED BIT(3)
431	#define K8_NBCAP_8_NODE BIT(2)
432	#define K8_NBCAP_DUAL_NODE BIT(1)
433	#define K8_NBCAP_DCT_DUAL BIT(0)
434
435	/*
436	* MSR Regs
437	*/
438	#define K8_MSR_MCGCTL 0x017b
439	#define K8_MSR_MCGCTL_NBE BIT(4)
440
441	#define K8_MSR_MC4CTL 0x0410
442	#define K8_MSR_MC4STAT 0x0411
443	#define K8_MSR_MC4ADDR 0x0412
444
445	/* AMD sets the first MC device at device ID 0x18. */
446	static inline int get_mc_node_id_from_pdev(struct pci_dev *pdev)
447	{
448	return PCI_SLOT(pdev->devfn) - 0x18;
449	}
450
451	enum amd64_chipset_families {
452	K8_CPUS = 0,
453	F10_CPUS,
454	F11_CPUS,
455	};
456
457	/*
458	* Structure to hold:
459	*
460	* 1) dynamically read status and error address HW registers
461	* 2) sysfs entered values
462	* 3) MCE values
463	*
464	* Depends on entry into the modules
465	*/
466	struct amd64_error_info_regs {
467	u32 nbcfg;
468	u32 nbsh;
469	u32 nbsl;
470	u32 nbeah;
471	u32 nbeal;
472	};
473
474	/* Error injection control structure */
475	struct error_injection {
476	u32 section;
477	u32 word;
478	u32 bit_map;
479	};
480
481	struct amd64_pvt {
482	/* pci_device handles which we utilize */
483	struct pci_dev *addr_f1_ctl;
484	struct pci_dev *dram_f2_ctl;
485	struct pci_dev *misc_f3_ctl;
486
487	int mc_node_id; /* MC index of this MC node */
488	int ext_model; /* extended model value of this node */
489
490	struct low_ops ops; / pointer to per PCI Device ID func table */
491
492	int channel_count;
493
494	/* Raw registers */
495	u32 dclr0; /* DRAM Configuration Low DCT0 reg */
496	u32 dclr1; /* DRAM Configuration Low DCT1 reg */
497	u32 dchr0; /* DRAM Configuration High DCT0 reg */
498	u32 dchr1; /* DRAM Configuration High DCT1 reg */
499	u32 nbcap; /* North Bridge Capabilities */
500	u32 nbcfg; /* F10 North Bridge Configuration */
501	u32 ext_nbcfg; /* Extended F10 North Bridge Configuration */
502	u32 dhar; /* DRAM Hoist reg */
503	u32 dbam0; /* DRAM Base Address Mapping reg for DCT0 */
504	u32 dbam1; /* DRAM Base Address Mapping reg for DCT1 */
505
506	/* DRAM CS Base Address Registers F2x[1,0][5C:40] */
507	u32 dcsb0[CHIPSELECT_COUNT];
508	u32 dcsb1[CHIPSELECT_COUNT];
509
510	/* DRAM CS Mask Registers F2x[1,0][6C:60] */
511	u32 dcsm0[CHIPSELECT_COUNT];
512	u32 dcsm1[CHIPSELECT_COUNT];
513
514	/*
515	* Decoded parts of DRAM BASE and LIMIT Registers
516	* F1x[78,70,68,60,58,50,48,40]
517	*/
518	u64 dram_base[DRAM_REG_COUNT];
519	u64 dram_limit[DRAM_REG_COUNT];
520	u8 dram_IntlvSel[DRAM_REG_COUNT];
521	u8 dram_IntlvEn[DRAM_REG_COUNT];
522	u8 dram_DstNode[DRAM_REG_COUNT];
523	u8 dram_rw_en[DRAM_REG_COUNT];
524
525	/*
526	* The following fields are set at (load) run time, after CPU revision
527	* has been determined, since the dct_base and dct_mask registers vary
528	* based on revision
529	*/
530	u32 dcsb_base; /* DCSB base bits */
531	u32 dcsm_mask; /* DCSM mask bits */
532	u32 num_dcsm; /* Number of DCSM registers */
533	u32 dcs_mask_notused; /* DCSM notused mask bits */
534	u32 dcs_shift; /* DCSB and DCSM shift value */
535
536	u64 top_mem; /* top of memory below 4GB */
537	u64 top_mem2; /* top of memory above 4GB */
538
539	u32 dram_ctl_select_low; /* DRAM Controller Select Low Reg */
540	u32 dram_ctl_select_high; /* DRAM Controller Select High Reg */
541	u32 online_spare; /* On-Line spare Reg */
542
543	/* temp storage for when input is received from sysfs */
544	struct amd64_error_info_regs ctl_error_info;
545
546	/* place to store error injection parameters prior to issue */
547	struct error_injection injection;
548
549	/* Save old hw registers' values before we modified them */
550	u32 nbctl_mcgctl_saved; /* When true, following 2 are valid */
551	u32 old_nbctl;
552	u32 old_mcgctl; / per core on this node */
553
554	/* MC Type Index value: socket F vs Family 10h */
555	u32 mc_type_index;
556
557	/* misc settings */
558	struct flags {
559	unsigned long cf8_extcfg:1;
560	} flags;
561	};
562
563	struct scrubrate {
564	u32 scrubval; /* bit pattern for scrub rate */
565	u32 bandwidth; /* bandwidth consumed (bytes/sec) */
566	};
567
568	extern struct scrubrate scrubrates[23];
569	extern u32 revf_quad_ddr2_shift[16];
570	extern const char *tt_msgs[4];
571	extern const char *ll_msgs[4];
572	extern const char *rrrr_msgs[16];
573	extern const char *to_msgs[2];
574	extern const char *pp_msgs[4];
575	extern const char *ii_msgs[4];
576	extern const char *ext_msgs[32];
577	extern const char *htlink_msgs[8];
578
579	/*
580	* Each of the PCI Device IDs types have their own set of hardware accessor
581	* functions and per device encoding/decoding logic.
582	*/
583	struct low_ops {
584	int (probe_valid_hardware)(struct amd64_pvt pvt);
585	int (early_channel_count)(struct amd64_pvt pvt);
586
587	u64 (get_error_address)(struct mem_ctl_info mci,
588	struct amd64_error_info_regs *info);
589	void (read_dram_base_limit)(struct amd64_pvt pvt, int dram);
590	void (read_dram_ctl_register)(struct amd64_pvt pvt);
591	void (map_sysaddr_to_csrow)(struct mem_ctl_info mci,
592	struct amd64_error_info_regs *info,
593	u64 SystemAddr);
594	int (dbam_map_to_pages)(struct amd64_pvt pvt, int dram_map);
595	};
596
597	struct amd64_family_type {
598	const char *ctl_name;
599	u16 addr_f1_ctl;
600	u16 misc_f3_ctl;
601	struct low_ops ops;
602	};
603
604	static struct amd64_family_type amd64_family_types[];
605
606	static inline const char *get_amd_family_name(int index)
607	{
608	return amd64_family_types[index].ctl_name;
609	}
610
611	static inline struct low_ops *family_ops(int index)
612	{
613	return &amd64_family_types[index].ops;
614	}
615
616	/*
617	* For future CPU versions, verify the following as new 'slow' rates appear and
618	* modify the necessary skip values for the supported CPU.
619	*/
620	#define K8_MIN_SCRUB_RATE_BITS 0x0
621	#define F10_MIN_SCRUB_RATE_BITS 0x5
622	#define F11_MIN_SCRUB_RATE_BITS 0x6
623
624	int amd64_process_error_info(struct mem_ctl_info *mci,
625	struct amd64_error_info_regs *info,
626	int handle_errors);
627	int amd64_get_dram_hole_info(struct mem_ctl_info mci, u64 hole_base,
628	u64 hole_offset, u64 hole_size);