path: root/drivers/edac/mce_amd.c

#include <linux/module.h>
#include <linux/slab.h>

#include "mce_amd.h"

static struct amd_decoder_ops *fam_ops;

static u8 xec_mask	 = 0xf;

static bool report_gart_errors;
static void (*nb_bus_decoder)(int node_id, struct mce *m);

void amd_report_gart_errors(bool v)
{
	report_gart_errors = v;
}
EXPORT_SYMBOL_GPL(amd_report_gart_errors);

void amd_register_ecc_decoder(void (*f)(int, struct mce *))
{
	nb_bus_decoder = f;
}
EXPORT_SYMBOL_GPL(amd_register_ecc_decoder);

void amd_unregister_ecc_decoder(void (*f)(int, struct mce *))
{
	if (nb_bus_decoder) {
		WARN_ON(nb_bus_decoder != f);

		nb_bus_decoder = NULL;
	}
}
EXPORT_SYMBOL_GPL(amd_unregister_ecc_decoder);

/*
 * string representation for the different MCA reported error types, see F3x48
 * or MSR0000_0411.
 */

/* transaction type */
static const char * const tt_msgs[] = { "INSN", "DATA", "GEN", "RESV" };

/* cache level */
static const char * const ll_msgs[] = { "RESV", "L1", "L2", "L3/GEN" };

/* memory transaction type */
static const char * const rrrr_msgs[] = {
       "GEN", "RD", "WR", "DRD", "DWR", "IRD", "PRF", "EV", "SNP"
};

/* participating processor */
const char * const pp_msgs[] = { "SRC", "RES", "OBS", "GEN" };
EXPORT_SYMBOL_GPL(pp_msgs);

/* request timeout */
static const char * const to_msgs[] = { "no timeout", "timed out" };

/* memory or i/o */
static const char * const ii_msgs[] = { "MEM", "RESV", "IO", "GEN" };

/* internal error type */
static const char * const uu_msgs[] = { "RESV", "RESV", "HWA", "RESV" };

static const char * const f15h_mc1_mce_desc[] = {
	"UC during a demand linefill from L2",
	"Parity error during data load from IC",
	"Parity error for IC valid bit",
	"Main tag parity error",
	"Parity error in prediction queue",
	"PFB data/address parity error",
	"Parity error in the branch status reg",
	"PFB promotion address error",
	"Tag error during probe/victimization",
	"Parity error for IC probe tag valid bit",
	"PFB non-cacheable bit parity error",
	"PFB valid bit parity error",			/* xec = 0xd */
	"Microcode Patch Buffer",			/* xec = 010 */
	"uop queue",
	"insn buffer",
	"predecode buffer",
	"fetch address FIFO",
	"dispatch uop queue"
};

static const char * const f15h_mc2_mce_desc[] = {
	"Fill ECC error on data fills",			/* xec = 0x4 */
	"Fill parity error on insn fills",
	"Prefetcher request FIFO parity error",
	"PRQ address parity error",
	"PRQ data parity error",
	"WCC Tag ECC error",
	"WCC Data ECC error",
	"WCB Data parity error",
	"VB Data ECC or parity error",
	"L2 Tag ECC error",				/* xec = 0x10 */
	"Hard L2 Tag ECC error",
	"Multiple hits on L2 tag",
	"XAB parity error",
	"PRB address parity error"
};

static const char * const mc4_mce_desc[] = {
	"DRAM ECC error detected on the NB",
	"CRC error detected on HT link",
	"Link-defined sync error packets detected on HT link",
	"HT Master abort",
	"HT Target abort",
	"Invalid GART PTE entry during GART table walk",
	"Unsupported atomic RMW received from an IO link",
	"Watchdog timeout due to lack of progress",
	"DRAM ECC error detected on the NB",
	"SVM DMA Exclusion Vector error",
	"HT data error detected on link",
	"Protocol error (link, L3, probe filter)",
	"NB internal arrays parity error",
	"DRAM addr/ctl signals parity error",
	"IO link transmission error",
	"L3 data cache ECC error",			/* xec = 0x1c */
	"L3 cache tag error",
	"L3 LRU parity bits error",
	"ECC Error in the Probe Filter directory"
};

static const char * const mc5_mce_desc[] = {
	"CPU Watchdog timer expire",
	"Wakeup array dest tag",
	"AG payload array",
	"EX payload array",
	"IDRF array",
	"Retire dispatch queue",
	"Mapper checkpoint array",
	"Physical register file EX0 port",
	"Physical register file EX1 port",
	"Physical register file AG0 port",
	"Physical register file AG1 port",
	"Flag register file",
	"DE error occurred",
	"Retire status queue"
};

static const char * const mc6_mce_desc[] = {
	"Hardware Assertion",
	"Free List",
	"Physical Register File",
	"Retire Queue",
	"Scheduler table",
	"Status Register File",
};

/* Scalable MCA error strings */
static const char * const smca_ls_mce_desc[] = {
	"Load queue parity",
	"Store queue parity",
	"Miss address buffer payload parity",
	"L1 TLB parity",
	"Reserved",
	"DC tag error type 6",
	"DC tag error type 1",
	"Internal error type 1",
	"Internal error type 2",
	"Sys Read data error thread 0",
	"Sys read data error thread 1",
	"DC tag error type 2",
	"DC data error type 1 (poison comsumption)",
	"DC data error type 2",
	"DC data error type 3",
	"DC tag error type 4",
	"L2 TLB parity",
	"PDC parity error",
	"DC tag error type 3",
	"DC tag error type 5",
	"L2 fill data error",
};

static const char * const smca_if_mce_desc[] = {
	"microtag probe port parity error",
	"IC microtag or full tag multi-hit error",
	"IC full tag parity",
	"IC data array parity",
	"Decoupling queue phys addr parity error",