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Commit 5d4b58e8 authored by Borislav Petkov's avatar Borislav Petkov
Browse files

amd64_edac: Fix channel interleave removal 



Remove the channel interleave select bit properly. See
F2x110[DctSelIntLvAddr] for details.

Signed-off-by: default avatarBorislav Petkov <borislav.petkov@amd.com>
parent e2f79dbd

drivers/edac/amd64_edac.c

+17 −9
Original line number Diff line number Diff line
@@ -1373,7 +1373,7 @@ static int f10_match_to_this_node(struct amd64_pvt *pvt, int range, 
{

	int cs_found = -EINVAL;

	u64 chan_addr;

	u32 tmp, dct_sel_base;

	u32 dct_sel_base;

	u8 channel;

	bool high_range = false;
@@ -1411,19 +1411,27 @@ static int f10_match_to_this_node(struct amd64_pvt *pvt, int range, 
		chan_addr = ((chan_addr >> (12 + hweight8(intlv_en))) << 12) |

			    (chan_addr & 0xfff);



	/* remove channel interleave and hash */

	/* remove channel interleave */

	if (dct_interleave_enabled(pvt) &&

	   !dct_high_range_enabled(pvt) &&

	   !dct_ganging_enabled(pvt)) {

		if (dct_sel_interleave_addr(pvt) != 1)

			chan_addr = (chan_addr >> 1) & GENMASK(6, 63);

		else {

			tmp = chan_addr & 0xFC0;

			chan_addr = ((chan_addr & GENMASK(14, 63)) >> 1) | tmp;

		}



		if (dct_sel_interleave_addr(pvt) != 1) {

			if (dct_sel_interleave_addr(pvt) == 0x3)

				/* hash 9 */

				chan_addr = ((chan_addr >> 10) << 9) |

					     (chan_addr & 0x1ff);

			else

				/* A[6] or hash 6 */

				chan_addr = ((chan_addr >> 7) << 6) |

					     (chan_addr & 0x3f);

		} else

			/* A[12] */

			chan_addr = ((chan_addr >> 13) << 12) |

				     (chan_addr & 0xfff);

	}



	debugf1("   (ChannelAddrLong=0x%llx)\n", chan_addr);

	debugf1("   Normalized DCT addr: 0x%llx\n", chan_addr);



	cs_found = f10_lookup_addr_in_dct(chan_addr, node_id, channel);