From fe5211f19a746c6573e1eae87a95b6b3313fe785 Mon Sep 17 00:00:00 2001 From: Hawking Zhang Date: Mon, 2 Mar 2020 12:14:20 +0800 Subject: drm/amdgpu: add reset_ras_error_count function for MMHUB MMHUB ras error counters are dirty ones after cold reboot Read operation is needed to reset them to 0 Signed-off-by: Hawking Zhang Reviewed-by: Alex Deucher Reviewed-by: Tao Zhou Reviewed-by: Guchun Chen Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c') diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c index 49a3a56ec017..396c2a624de0 100644 --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c @@ -747,7 +747,19 @@ static void mmhub_v1_0_query_ras_error_count(struct amdgpu_device *adev, err_data->ue_count += ded_count; } +static void mmhub_v1_0_reset_ras_error_count(struct amdgpu_device *adev) +{ + uint32_t i; + + /* read back edc counter registers to reset the counters to 0 */ + if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__MMHUB)) { + for (i = 0; i < ARRAY_SIZE(mmhub_v1_0_edc_cnt_regs); i++) + RREG32(SOC15_REG_ENTRY_OFFSET(mmhub_v1_0_edc_cnt_regs[i])); + } +} + const struct amdgpu_mmhub_funcs mmhub_v1_0_funcs = { .ras_late_init = amdgpu_mmhub_ras_late_init, .query_ras_error_count = mmhub_v1_0_query_ras_error_count, + .reset_ras_error_count = mmhub_v1_0_reset_ras_error_count, }; -- cgit v1.2.3