1. 根目录:
2. drivers
3. edac
4. mce_amd.h

#ifndef _EDAC_MCE_AMD_H
#define _EDAC_MCE_AMD_H

#include <linux/notifier.h>

#include <asm/mce.h>

#define EC(x)				((x) & 0xffff)
#define XEC(x, mask)			(((x) >> 16) & mask)

#define LOW_SYNDROME(x)			(((x) >> 15) & 0xff)
#define HIGH_SYNDROME(x)		(((x) >> 24) & 0xff)

#define TLB_ERROR(x)			(((x) & 0xFFF0) == 0x0010)
#define MEM_ERROR(x)			(((x) & 0xFF00) == 0x0100)
#define BUS_ERROR(x)			(((x) & 0xF800) == 0x0800)
#define INT_ERROR(x)			(((x) & 0xF4FF) == 0x0400)

#define TT(x)				(((x) >> 2) & 0x3)
#define TT_MSG(x)			tt_msgs[TT(x)]
#define II(x)				(((x) >> 2) & 0x3)
#define II_MSG(x)			ii_msgs[II(x)]
#define LL(x)				((x) & 0x3)
#define LL_MSG(x)			ll_msgs[LL(x)]
#define TO(x)				(((x) >> 8) & 0x1)
#define TO_MSG(x)			to_msgs[TO(x)]
#define PP(x)				(((x) >> 9) & 0x3)
#define PP_MSG(x)			pp_msgs[PP(x)]
#define UU(x)				(((x) >> 8) & 0x3)
#define UU_MSG(x)			uu_msgs[UU(x)]

#define R4(x)				(((x) >> 4) & 0xf)
#define R4_MSG(x)			((R4(x) < 9) ?  rrrr_msgs[R4(x)] : "Wrong R4!")

#define MCI_STATUS_DEFERRED		BIT_64(44)
#define MCI_STATUS_POISON		BIT_64(43)

extern const char * const pp_msgs[];

enum tt_ids {
	TT_INSTR = 0,
	TT_DATA,
	TT_GEN,
	TT_RESV,
};

enum ll_ids {
	LL_RESV = 0,
	LL_L1,
	LL_L2,
	LL_LG,
};

enum ii_ids {
	II_MEM = 0,
	II_RESV,
	II_IO,
	II_GEN,
};

enum rrrr_ids {
	R4_GEN	= 0,
	R4_RD,
	R4_WR,
	R4_DRD,
	R4_DWR,
	R4_IRD,
	R4_PREF,
	R4_EVICT,
	R4_SNOOP,
};

/*
 * per-family decoder ops
 */
struct amd_decoder_ops {
	bool (*mc0_mce)(u16, u8);
	bool (*mc1_mce)(u16, u8);
	bool (*mc2_mce)(u16, u8);
};

void amd_report_gart_errors(bool);
void amd_register_ecc_decoder(void (*f)(int, struct mce *));
void amd_unregister_ecc_decoder(void (*f)(int, struct mce *));
int amd_decode_mce(struct notifier_block *nb, unsigned long val, void *data);

#endif /* _EDAC_MCE_AMD_H */