drm/amdgpu: add query_ras_error_count function for sdma v4

query_ras_error_count function will be invoked to query
single bit error count detected in sdma ip block
Signed-off-by: NHawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h

@@ -50,6 +50,11 @@ struct amdgpu_sdma_instance {
 	bool			burst_nop;
 };
 
+struct amdgpu_sdma_ras_funcs {
+	int (*query_ras_error_count)(struct amdgpu_device *adev,
+			uint32_t instance, void *ras_error_status);
+};
+
 struct amdgpu_sdma {
 	struct amdgpu_sdma_instance instance[AMDGPU_MAX_SDMA_INSTANCES];
 	struct drm_gpu_scheduler    *sdma_sched[AMDGPU_MAX_SDMA_INSTANCES];
@@ -61,6 +66,7 @@ struct amdgpu_sdma {
 	uint32_t                    srbm_soft_reset;
 	bool			has_page_queue;
 	struct ras_common_if	*ras_if;
+	const struct amdgpu_sdma_ras_funcs	*funcs;
 };
 
 /*

drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

@@ -82,6 +82,7 @@ static void sdma_v4_0_set_ring_funcs(struct amdgpu_device *adev);
 static void sdma_v4_0_set_buffer_funcs(struct amdgpu_device *adev);
 static void sdma_v4_0_set_vm_pte_funcs(struct amdgpu_device *adev);
 static void sdma_v4_0_set_irq_funcs(struct amdgpu_device *adev);
+static void sdma_v4_0_set_ras_funcs(struct amdgpu_device *adev);
 
 static const struct soc15_reg_golden golden_settings_sdma_4[] = {
 	SOC15_REG_GOLDEN_VALUE(SDMA0, 0, mmSDMA0_CHICKEN_BITS, 0xfe931f07, 0x02831d07),
@@ -257,6 +258,105 @@ static const struct soc15_reg_golden golden_settings_sdma_4_3[] = {
 	SOC15_REG_GOLDEN_VALUE(SDMA0, 0, mmSDMA0_UTCL1_WATERMK, 0xfc000000, 0x00000000)
 };
 
+static const struct soc15_ras_field_entry sdma_v4_0_ras_fields[] = {
+	{ "SDMA_UCODE_BUF_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_UCODE_BUF_SED),
+	0, 0,
+	},
+	{ "SDMA_RB_CMD_BUF_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_RB_CMD_BUF_SED),
+	0, 0,
+	},
+	{ "SDMA_IB_CMD_BUF_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_IB_CMD_BUF_SED),
+	0, 0,
+	},
+	{ "SDMA_UTCL1_RD_FIFO_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_UTCL1_RD_FIFO_SED),
+	0, 0,
+	},
+	{ "SDMA_UTCL1_RDBST_FIFO_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_UTCL1_RDBST_FIFO_SED),
+	0, 0,
+	},
+	{ "SDMA_DATA_LUT_FIFO_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_DATA_LUT_FIFO_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF0_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF0_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF1_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF1_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF2_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF2_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF3_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF3_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF4_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF4_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF5_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF5_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF6_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF6_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF7_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF7_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF8_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF8_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF9_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF9_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF10_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF10_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF11_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF11_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF12_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF12_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF13_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF13_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF14_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF14_SED),
+	0, 0,
+	},
+	{ "SDMA_MBANK_DATA_BUF15_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MBANK_DATA_BUF15_SED),
+	0, 0,
+	},
+	{ "SDMA_SPLIT_DAT_BUF_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_SPLIT_DAT_BUF_SED),
+	0, 0,
+	},
+	{ "SDMA_MC_WR_ADDR_FIFO_SED", SOC15_REG_ENTRY(SDMA0, 0, mmSDMA0_EDC_COUNTER),
+	SOC15_REG_FIELD(SDMA0_EDC_COUNTER, SDMA_MC_WR_ADDR_FIFO_SED),
+	0, 0,
+	},
+};
+
 static u32 sdma_v4_0_get_reg_offset(struct amdgpu_device *adev,
 		u32 instance, u32 offset)
 {
@@ -1686,6 +1786,7 @@ static int sdma_v4_0_early_init(void *handle)
 	sdma_v4_0_set_buffer_funcs(adev);
 	sdma_v4_0_set_vm_pte_funcs(adev);
 	sdma_v4_0_set_irq_funcs(adev);
+	sdma_v4_0_set_ras_funcs(adev);
 
 	return 0;
 }
@@ -2414,6 +2515,68 @@ static void sdma_v4_0_set_vm_pte_funcs(struct amdgpu_device *adev)
 	adev->vm_manager.vm_pte_num_scheds = adev->sdma.num_instances;
 }
 
+static void sdma_v4_0_get_ras_error_count(uint32_t value,
+					uint32_t instance,
+					uint32_t *sec_count)
+{
+	uint32_t i;
+	uint32_t sec_cnt;
+
+	/* double bits error (multiple bits) error detection is not supported */
+	for (i = 0; i < ARRAY_SIZE(sdma_v4_0_ras_fields); i++) {
+		/* the SDMA_EDC_COUNTER register in each sdma instance
+		 * shares the same sed shift_mask
+		 * */
+		sec_cnt = (value &
+			sdma_v4_0_ras_fields[i].sec_count_mask) >>
+			sdma_v4_0_ras_fields[i].sec_count_shift;
+		if (sec_cnt) {
+			DRM_INFO("Detected %s in SDMA%d, SED %d\n",
+				sdma_v4_0_ras_fields[i].name,
+				instance, sec_cnt);
+			*sec_count += sec_cnt;
+		}
+	}
+}
+
+static int sdma_v4_0_query_ras_error_count(struct amdgpu_device *adev,
+			uint32_t instance, void *ras_error_status)
+{
+	struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
+	uint32_t sec_count = 0;
+	uint32_t reg_value = 0;
+
+	reg_value = RREG32_SDMA(instance, mmSDMA0_EDC_COUNTER);
+	/* double bit error is not supported */
+	if (reg_value)
+		sdma_v4_0_get_ras_error_count(reg_value,
+				instance, &sec_count);
+	/* err_data->ce_count should be initialized to 0
+	 * before calling into this function */
+	err_data->ce_count += sec_count;
+	/* double bit error is not supported
+	 * set ue count to 0 */
+	err_data->ue_count = 0;
+
+	return 0;
+};
+
+static const struct amdgpu_sdma_ras_funcs sdma_v4_0_ras_funcs = {
+	.query_ras_error_count = sdma_v4_0_query_ras_error_count,
+};
+
+static void sdma_v4_0_set_ras_funcs(struct amdgpu_device *adev)
+{
+	switch (adev->asic_type) {
+	case CHIP_VEGA20:
+	case CHIP_ARCTURUS:
+		adev->sdma.funcs = &sdma_v4_0_ras_funcs;
+		break;
+	default:
+		break;
+	}
+}
+
 const struct amdgpu_ip_block_version sdma_v4_0_ip_block = {
 	.type = AMD_IP_BLOCK_TYPE_SDMA,
 	.major = 4,