[PATCH] drm/amdgpu: Identify data parity error corrected in replay mode

[Wang, Yang(Kevin)]

Reviewed-by: Yang Wang <kevinyang.wang at amd.com>

Best Regards,
Kevin

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Candice Li
Sent: Thursday, October 26, 2023 10:30 AM
To: amd-gfx at lists.freedesktop.org
Cc: Zhou1, Tao <Tao.Zhou1 at amd.com>; Li, Candice <Candice.Li at amd.com>
Subject: [PATCH] drm/amdgpu: Identify data parity error corrected in replay mode

Use ErrorCodeExt field to identify data parity error in replay mode.

Signed-off-by: Candice Li <candice.li at amd.com>
Reviewed-by: Tao Zhou <tao.zhou1 at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/umc_v12_0.c | 32 ++++++++++++++++++--------
 1 file changed, 23 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/umc_v12_0.c b/drivers/gpu/drm/amd/amdgpu/umc_v12_0.c
index 025e6aeb058d43..743d2f68b09020 100644
--- a/drivers/gpu/drm/amd/amdgpu/umc_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/umc_v12_0.c
@@ -88,6 +88,27 @@ static void umc_v12_0_reset_error_count(struct amdgpu_device *adev)
 		umc_v12_0_reset_error_count_per_channel, NULL);  }
 
+static bool umc_v12_0_is_uncorrectable_error(uint64_t mc_umc_status) {
+	return ((REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1) &&
+		(REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Deferred) == 1 ||
+		REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, PCC) == 1 ||
+		REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UC) == 1 ||
+		REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, TCC) == 
+1)); }
+
+static bool umc_v12_0_is_correctable_error(uint64_t mc_umc_status) {
+	return (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
+		(REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, CECC) == 1 ||
+		(REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1 &&
+		REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UC) == 0) ||
+		/* Identify data parity error in replay mode */
+		((REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, ErrorCodeExt) == 0x5 ||
+		REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, ErrorCodeExt) == 0xb) &&
+		!(umc_v12_0_is_uncorrectable_error(mc_umc_status)))));
+}
+
 static void umc_v12_0_query_correctable_error_count(struct amdgpu_device *adev,
 						   uint64_t umc_reg_offset,
 						   unsigned long *error_count)
@@ -104,10 +125,7 @@ static void umc_v12_0_query_correctable_error_count(struct amdgpu_device *adev,
 	mc_umc_status =
 		RREG64_PCIE_EXT((mc_umc_status_addr + umc_reg_offset) * 4);
 
-	if (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
-	    (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, CECC) == 1 ||
-	    (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UECC) == 1 &&
-	    REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UC) == 0)))
+	if (umc_v12_0_is_correctable_error(mc_umc_status))
 		*error_count += 1;
 }
 
@@ -125,11 +143,7 @@ static void umc_v12_0_query_uncorrectable_error_count(struct amdgpu_device *adev
 	mc_umc_status =
 		RREG64_PCIE_EXT((mc_umc_status_addr + umc_reg_offset) * 4);
 
-	if ((REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1) &&
-	    (REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Deferred) == 1 ||
-	    REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, PCC) == 1 ||
-	    REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, UC) == 1 ||
-	    REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, TCC) == 1))
+	if (umc_v12_0_is_uncorrectable_error(mc_umc_status))
 		*error_count += 1;
 }
 
--
2.25.1