drm/amdgpu: add mmhub error status query callback for aldebaran

The callback will be invoked to query mmea error
status when needed.
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Dennis Li<Dennis.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/mmhub_v1_7.c

@@ -1242,6 +1242,32 @@ static void mmhub_v1_7_reset_ras_error_count(struct amdgpu_device *adev)
 	}
 }
 
+static const struct soc15_reg_entry mmhub_v1_7_err_status_regs[] = {
+	{ SOC15_REG_ENTRY(MMHUB, 0, regMMEA0_ERR_STATUS), 0, 0, 0 },
+	{ SOC15_REG_ENTRY(MMHUB, 0, regMMEA1_ERR_STATUS), 0, 0, 0 },
+	{ SOC15_REG_ENTRY(MMHUB, 0, regMMEA2_ERR_STATUS), 0, 0, 0 },
+	{ SOC15_REG_ENTRY(MMHUB, 0, regMMEA3_ERR_STATUS), 0, 0, 0 },
+	{ SOC15_REG_ENTRY(MMHUB, 0, regMMEA4_ERR_STATUS), 0, 0, 0 },
+	{ SOC15_REG_ENTRY(MMHUB, 0, regMMEA5_ERR_STATUS), 0, 0, 0 },
+};
+
+static void mmhub_v1_7_query_ras_error_status(struct amdgpu_device *adev)
+{
+	int i;
+	uint32_t reg_value;
+
+	if (!amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__MMHUB))
+		return;
+
+	for (i = 0; i < ARRAY_SIZE(mmhub_v1_7_err_status_regs); i++) {
+		reg_value =
+			RREG32(SOC15_REG_ENTRY_OFFSET(mmhub_v1_7_err_status_regs[i]));
+		if (reg_value)
+			dev_warn(adev->dev, "MMHUB EA err detected at instance: %d, status: 0x%x!\n",
+					i, reg_value);
+	}
+}
+
 const struct amdgpu_mmhub_funcs mmhub_v1_7_funcs = {
 	.ras_late_init = amdgpu_mmhub_ras_late_init,
 	.query_ras_error_count = mmhub_v1_7_query_ras_error_count,
@@ -1254,4 +1280,5 @@ const struct amdgpu_mmhub_funcs mmhub_v1_7_funcs = {
 	.set_clockgating = mmhub_v1_7_set_clockgating,
 	.get_clockgating = mmhub_v1_7_get_clockgating,
 	.setup_vm_pt_regs = mmhub_v1_7_setup_vm_pt_regs,
+	.query_ras_error_status = mmhub_v1_7_query_ras_error_status,
 };