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Commit 25a4f8b0 authored by Borislav Petkov's avatar Borislav Petkov
Browse files

EDAC, MCE: Add F15h DC MCE decoder 



Add a decoder for F15h DC MCEs to support the new types of DC MCEs
introduced by the BD microarchitecture.

Signed-off-by: default avatarBorislav Petkov <borislav.petkov@amd.com>
parent 2be64bfa

drivers/edac/mce_amd.c

+61 −18
Original line number Diff line number Diff line
@@ -75,7 +75,7 @@ static const char *f10h_nb_mce_desc[] = { 
	"ECC Error in the Probe Filter directory"

};



static bool f12h_dc_mce(u16 ec)

static bool f12h_dc_mce(u16 ec, u8 xec)

{

	bool ret = false;
@@ -93,7 +93,7 @@ static bool f12h_dc_mce(u16 ec) 
	return ret;

}



static bool f10h_dc_mce(u16 ec)

static bool f10h_dc_mce(u16 ec, u8 xec)

{

	u8 r4  = (ec >> 4) & 0xf;

	u8 ll  = ec & 0x3;
@@ -102,20 +102,20 @@ static bool f10h_dc_mce(u16 ec) 
		pr_cont("during data scrub.\n");

		return true;

	}

	return f12h_dc_mce(ec);

	return f12h_dc_mce(ec, xec);

}



static bool k8_dc_mce(u16 ec)

static bool k8_dc_mce(u16 ec, u8 xec)

{

	if (BUS_ERROR(ec)) {

		pr_cont("during system linefill.\n");

		return true;

	}



	return f10h_dc_mce(ec);

	return f10h_dc_mce(ec, xec);

}



static bool f14h_dc_mce(u16 ec)

static bool f14h_dc_mce(u16 ec, u8 xec)

{

	u8 r4	 = (ec >> 4) & 0xf;

	u8 ll	 = ec & 0x3;
@@ -170,6 +170,54 @@ static bool f14h_dc_mce(u16 ec) 
	return ret;

}



static bool f15h_dc_mce(u16 ec, u8 xec)

{

	bool ret = true;



	if (MEM_ERROR(ec)) {



		switch (xec) {

		case 0x0:

			pr_cont("Data Array access error.\n");

			break;



		case 0x1:

			pr_cont("UC error during a linefill from L2/NB.\n");

			break;



		case 0x2:

		case 0x11:

			pr_cont("STQ access error.\n");

			break;



		case 0x3:

			pr_cont("SCB access error.\n");

			break;



		case 0x10:

			pr_cont("Tag error.\n");

			break;



		case 0x12:

			pr_cont("LDQ access error.\n");

			break;



		default:

			ret = false;

		}

	} else if (BUS_ERROR(ec)) {



		if (!xec)

			pr_cont("during system linefill.\n");

		else

			pr_cont(" Internal %s condition.\n",

				((xec == 1) ? "livelock" : "deadlock"));

	} else

		ret = false;



	return ret;

}



static void amd_decode_dc_mce(struct mce *m)

{

	u16 ec = m->status & 0xffff;
@@ -183,19 +231,13 @@ static void amd_decode_dc_mce(struct mce *m) 


		if (tt == TT_DATA) {

			pr_cont("%s TLB %s.\n", LL_MSG(ec),

				(xec ? "multimatch" : "parity error"));

				((xec == 2) ? "locked miss"

					    : (xec ? "multimatch" : "parity")));

			return;

		}

	} else if (fam_ops->dc_mce(ec, xec))

		;

	else

			goto wrong_dc_mce;

	}



	if (!fam_ops->dc_mce(ec))

		goto wrong_dc_mce;



	return;



wrong_dc_mce:

		pr_emerg(HW_ERR "Corrupted DC MCE info?\n");

}
@@ -654,6 +696,7 @@ static int __init mce_amd_init(void) 


	case 0x15:

		xec_mask = 0x1f;

		fam_ops->dc_mce = f15h_dc_mce;

		break;



	default:

drivers/edac/mce_amd.h

+1 −1
Original line number Diff line number Diff line
@@ -100,7 +100,7 @@ struct err_regs { 
 * per-family decoder ops

 */

struct amd_decoder_ops {

	bool (*dc_mce)(u16);

	bool (*dc_mce)(u16, u8);

	bool (*ic_mce)(u16);

	bool (*nb_mce)(u16, u8);

};