Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 685 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/df_v3_6.c b/drivers/gpu/drm/amd/amdgpu/df_v3_6.c
new file mode 100644
index 000000000..483a441b4
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/df_v3_6.c
@@ -0,0 +1,685 @@
+/*
+ * Copyright 2018 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#include "amdgpu.h"
+#include "df_v3_6.h"
+
+#include "df/df_3_6_default.h"
+#include "df/df_3_6_offset.h"
+#include "df/df_3_6_sh_mask.h"
+
+#define DF_3_6_SMN_REG_INST_DIST        0x8
+#define DF_3_6_INST_CNT                 8
+
+/* Defined in global_features.h as FTI_PERFMON_VISIBLE */
+#define DF_V3_6_MAX_COUNTERS		4
+
+/* get flags from df perfmon config */
+#define DF_V3_6_GET_EVENT(x)		(x & 0xFFUL)
+#define DF_V3_6_GET_INSTANCE(x)		((x >> 8) & 0xFFUL)
+#define DF_V3_6_GET_UNITMASK(x)		((x >> 16) & 0xFFUL)
+#define DF_V3_6_PERFMON_OVERFLOW	0xFFFFFFFFFFFFULL
+
+static u32 df_v3_6_channel_number[] = {1, 2, 0, 4, 0, 8, 0,
+				       16, 32, 0, 0, 0, 2, 4, 8};
+
+static uint64_t df_v3_6_get_fica(struct amdgpu_device *adev,
+				 uint32_t ficaa_val)
+{
+	unsigned long flags, address, data;
+	uint32_t ficadl_val, ficadh_val;
+
+	address = adev->nbio.funcs->get_pcie_index_offset(adev);
+	data = adev->nbio.funcs->get_pcie_data_offset(adev);
+
+	spin_lock_irqsave(&adev->pcie_idx_lock, flags);
+	WREG32(address, smnDF_PIE_AON_FabricIndirectConfigAccessAddress3);
+	WREG32(data, ficaa_val);
+
+	WREG32(address, smnDF_PIE_AON_FabricIndirectConfigAccessDataLo3);
+	ficadl_val = RREG32(data);
+
+	WREG32(address, smnDF_PIE_AON_FabricIndirectConfigAccessDataHi3);
+	ficadh_val = RREG32(data);
+
+	spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
+
+	return (((ficadh_val & 0xFFFFFFFFFFFFFFFF) << 32) | ficadl_val);
+}
+
+static void df_v3_6_set_fica(struct amdgpu_device *adev, uint32_t ficaa_val,
+			     uint32_t ficadl_val, uint32_t ficadh_val)
+{
+	unsigned long flags, address, data;
+
+	address = adev->nbio.funcs->get_pcie_index_offset(adev);
+	data = adev->nbio.funcs->get_pcie_data_offset(adev);
+
+	spin_lock_irqsave(&adev->pcie_idx_lock, flags);
+	WREG32(address, smnDF_PIE_AON_FabricIndirectConfigAccessAddress3);
+	WREG32(data, ficaa_val);
+
+	WREG32(address, smnDF_PIE_AON_FabricIndirectConfigAccessDataLo3);
+	WREG32(data, ficadl_val);
+
+	WREG32(address, smnDF_PIE_AON_FabricIndirectConfigAccessDataHi3);
+	WREG32(data, ficadh_val);
+
+	spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
+}
+
+/*
+ * df_v3_6_perfmon_rreg - read perfmon lo and hi
+ *
+ * required to be atomic.  no mmio method provided so subsequent reads for lo
+ * and hi require to preserve df finite state machine
+ */
+static void df_v3_6_perfmon_rreg(struct amdgpu_device *adev,
+			    uint32_t lo_addr, uint32_t *lo_val,
+			    uint32_t hi_addr, uint32_t *hi_val)
+{
+	unsigned long flags, address, data;
+
+	address = adev->nbio.funcs->get_pcie_index_offset(adev);
+	data = adev->nbio.funcs->get_pcie_data_offset(adev);
+
+	spin_lock_irqsave(&adev->pcie_idx_lock, flags);
+	WREG32(address, lo_addr);
+	*lo_val = RREG32(data);
+	WREG32(address, hi_addr);
+	*hi_val = RREG32(data);
+	spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
+}
+
+/*
+ * df_v3_6_perfmon_wreg - write to perfmon lo and hi
+ *
+ * required to be atomic.  no mmio method provided so subsequent reads after
+ * data writes cannot occur to preserve data fabrics finite state machine.
+ */
+static void df_v3_6_perfmon_wreg(struct amdgpu_device *adev, uint32_t lo_addr,
+			    uint32_t lo_val, uint32_t hi_addr, uint32_t hi_val)
+{
+	unsigned long flags, address, data;
+
+	address = adev->nbio.funcs->get_pcie_index_offset(adev);
+	data = adev->nbio.funcs->get_pcie_data_offset(adev);
+
+	spin_lock_irqsave(&adev->pcie_idx_lock, flags);
+	WREG32(address, lo_addr);
+	WREG32(data, lo_val);
+	WREG32(address, hi_addr);
+	WREG32(data, hi_val);
+	spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
+}
+
+/* same as perfmon_wreg but return status on write value check */
+static int df_v3_6_perfmon_arm_with_status(struct amdgpu_device *adev,
+					  uint32_t lo_addr, uint32_t lo_val,
+					  uint32_t hi_addr, uint32_t  hi_val)
+{
+	unsigned long flags, address, data;
+	uint32_t lo_val_rb, hi_val_rb;
+
+	address = adev->nbio.funcs->get_pcie_index_offset(adev);
+	data = adev->nbio.funcs->get_pcie_data_offset(adev);
+
+	spin_lock_irqsave(&adev->pcie_idx_lock, flags);
+	WREG32(address, lo_addr);
+	WREG32(data, lo_val);
+	WREG32(address, hi_addr);
+	WREG32(data, hi_val);
+
+	WREG32(address, lo_addr);
+	lo_val_rb = RREG32(data);
+	WREG32(address, hi_addr);
+	hi_val_rb = RREG32(data);
+	spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
+
+	if (!(lo_val == lo_val_rb && hi_val == hi_val_rb))
+		return -EBUSY;
+
+	return 0;
+}
+
+
+/*
+ * retry arming counters every 100 usecs within 1 millisecond interval.
+ * if retry fails after time out, return error.
+ */
+#define ARM_RETRY_USEC_TIMEOUT	1000
+#define ARM_RETRY_USEC_INTERVAL	100
+static int df_v3_6_perfmon_arm_with_retry(struct amdgpu_device *adev,
+					  uint32_t lo_addr, uint32_t lo_val,
+					  uint32_t hi_addr, uint32_t  hi_val)
+{
+	int countdown = ARM_RETRY_USEC_TIMEOUT;
+
+	while (countdown) {
+
+		if (!df_v3_6_perfmon_arm_with_status(adev, lo_addr, lo_val,
+						     hi_addr, hi_val))
+			break;
+
+		countdown -= ARM_RETRY_USEC_INTERVAL;
+		udelay(ARM_RETRY_USEC_INTERVAL);
+	}
+
+	return countdown > 0 ? 0 : -ETIME;
+}
+
+/* get the number of df counters available */
+static ssize_t df_v3_6_get_df_cntr_avail(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct amdgpu_device *adev;
+	struct drm_device *ddev;
+	int i, count;
+
+	ddev = dev_get_drvdata(dev);
+	adev = drm_to_adev(ddev);
+	count = 0;
+
+	for (i = 0; i < DF_V3_6_MAX_COUNTERS; i++) {
+		if (adev->df_perfmon_config_assign_mask[i] == 0)
+			count++;
+	}
+
+	return sysfs_emit(buf, "%i\n", count);
+}
+
+/* device attr for available perfmon counters */
+static DEVICE_ATTR(df_cntr_avail, S_IRUGO, df_v3_6_get_df_cntr_avail, NULL);
+
+static void df_v3_6_query_hashes(struct amdgpu_device *adev)
+{
+	u32 tmp;
+
+	adev->df.hash_status.hash_64k = false;
+	adev->df.hash_status.hash_2m = false;
+	adev->df.hash_status.hash_1g = false;
+
+	/* encoding for hash-enabled on Arcturus and Aldebaran */
+	if ((adev->asic_type == CHIP_ARCTURUS &&
+	     adev->df.funcs->get_fb_channel_number(adev) == 0xe) ||
+	     (adev->asic_type == CHIP_ALDEBARAN &&
+	      adev->df.funcs->get_fb_channel_number(adev) == 0x1e)) {
+		tmp = RREG32_SOC15(DF, 0, mmDF_CS_UMC_AON0_DfGlobalCtrl);
+		adev->df.hash_status.hash_64k = REG_GET_FIELD(tmp,
+						DF_CS_UMC_AON0_DfGlobalCtrl,
+						GlbHashIntlvCtl64K);
+		adev->df.hash_status.hash_2m = REG_GET_FIELD(tmp,
+						DF_CS_UMC_AON0_DfGlobalCtrl,
+						GlbHashIntlvCtl2M);
+		adev->df.hash_status.hash_1g = REG_GET_FIELD(tmp,
+						DF_CS_UMC_AON0_DfGlobalCtrl,
+						GlbHashIntlvCtl1G);
+	}
+}
+
+/* init perfmons */
+static void df_v3_6_sw_init(struct amdgpu_device *adev)
+{
+	int i, ret;
+
+	ret = device_create_file(adev->dev, &dev_attr_df_cntr_avail);
+	if (ret)
+		DRM_ERROR("failed to create file for available df counters\n");
+
+	for (i = 0; i < AMDGPU_MAX_DF_PERFMONS; i++)
+		adev->df_perfmon_config_assign_mask[i] = 0;
+
+	df_v3_6_query_hashes(adev);
+}
+
+static void df_v3_6_sw_fini(struct amdgpu_device *adev)
+{
+
+	device_remove_file(adev->dev, &dev_attr_df_cntr_avail);
+
+}
+
+static void df_v3_6_enable_broadcast_mode(struct amdgpu_device *adev,
+					  bool enable)
+{
+	u32 tmp;
+
+	if (enable) {
+		tmp = RREG32_SOC15(DF, 0, mmFabricConfigAccessControl);
+		tmp &= ~FabricConfigAccessControl__CfgRegInstAccEn_MASK;
+		WREG32_SOC15(DF, 0, mmFabricConfigAccessControl, tmp);
+	} else
+		WREG32_SOC15(DF, 0, mmFabricConfigAccessControl,
+			     mmFabricConfigAccessControl_DEFAULT);
+}
+
+static u32 df_v3_6_get_fb_channel_number(struct amdgpu_device *adev)
+{
+	u32 tmp;
+
+	if (adev->asic_type == CHIP_ALDEBARAN) {
+		tmp = RREG32_SOC15(DF, 0, mmDF_GCM_AON0_DramMegaBaseAddress0);
+		tmp &=
+		ALDEBARAN_DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan_MASK;
+	} else {
+		tmp = RREG32_SOC15(DF, 0, mmDF_CS_UMC_AON0_DramBaseAddress0);
+		tmp &= DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan_MASK;
+	}
+	tmp >>= DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan__SHIFT;
+
+	return tmp;
+}
+
+static u32 df_v3_6_get_hbm_channel_number(struct amdgpu_device *adev)
+{
+	int fb_channel_number;
+
+	fb_channel_number = adev->df.funcs->get_fb_channel_number(adev);
+	if (fb_channel_number >= ARRAY_SIZE(df_v3_6_channel_number))
+		fb_channel_number = 0;
+
+	return df_v3_6_channel_number[fb_channel_number];
+}
+
+static void df_v3_6_update_medium_grain_clock_gating(struct amdgpu_device *adev,
+						     bool enable)
+{
+	u32 tmp;
+
+	if (adev->cg_flags & AMD_CG_SUPPORT_DF_MGCG) {
+		/* Put DF on broadcast mode */
+		adev->df.funcs->enable_broadcast_mode(adev, true);
+
+		if (enable) {
+			tmp = RREG32_SOC15(DF, 0,
+					mmDF_PIE_AON0_DfGlobalClkGater);
+			tmp &= ~DF_PIE_AON0_DfGlobalClkGater__MGCGMode_MASK;
+			tmp |= DF_V3_6_MGCG_ENABLE_15_CYCLE_DELAY;
+			WREG32_SOC15(DF, 0,
+					mmDF_PIE_AON0_DfGlobalClkGater, tmp);
+		} else {
+			tmp = RREG32_SOC15(DF, 0,
+					mmDF_PIE_AON0_DfGlobalClkGater);
+			tmp &= ~DF_PIE_AON0_DfGlobalClkGater__MGCGMode_MASK;
+			tmp |= DF_V3_6_MGCG_DISABLE;
+			WREG32_SOC15(DF, 0,
+					mmDF_PIE_AON0_DfGlobalClkGater, tmp);
+		}
+
+		/* Exit broadcast mode */
+		adev->df.funcs->enable_broadcast_mode(adev, false);
+	}
+}
+
+static void df_v3_6_get_clockgating_state(struct amdgpu_device *adev,
+					  u64 *flags)
+{
+	u32 tmp;
+
+	/* AMD_CG_SUPPORT_DF_MGCG */
+	tmp = RREG32_SOC15(DF, 0, mmDF_PIE_AON0_DfGlobalClkGater);
+	if (tmp & DF_V3_6_MGCG_ENABLE_15_CYCLE_DELAY)
+		*flags |= AMD_CG_SUPPORT_DF_MGCG;
+}
+
+/* get assigned df perfmon ctr as int */
+static bool df_v3_6_pmc_has_counter(struct amdgpu_device *adev,
+				      uint64_t config,
+				      int counter_idx)
+{
+
+	return ((config & 0x0FFFFFFUL) ==
+			adev->df_perfmon_config_assign_mask[counter_idx]);
+
+}
+
+/* get address based on counter assignment */
+static void df_v3_6_pmc_get_addr(struct amdgpu_device *adev,
+				 uint64_t config,
+				 int counter_idx,
+				 int is_ctrl,
+				 uint32_t *lo_base_addr,
+				 uint32_t *hi_base_addr)
+{
+	if (!df_v3_6_pmc_has_counter(adev, config, counter_idx))
+		return;
+
+	switch (counter_idx) {
+
+	case 0:
+		*lo_base_addr = is_ctrl ? smnPerfMonCtlLo4 : smnPerfMonCtrLo4;
+		*hi_base_addr = is_ctrl ? smnPerfMonCtlHi4 : smnPerfMonCtrHi4;
+		break;
+	case 1:
+		*lo_base_addr = is_ctrl ? smnPerfMonCtlLo5 : smnPerfMonCtrLo5;
+		*hi_base_addr = is_ctrl ? smnPerfMonCtlHi5 : smnPerfMonCtrHi5;
+		break;
+	case 2:
+		*lo_base_addr = is_ctrl ? smnPerfMonCtlLo6 : smnPerfMonCtrLo6;
+		*hi_base_addr = is_ctrl ? smnPerfMonCtlHi6 : smnPerfMonCtrHi6;
+		break;
+	case 3:
+		*lo_base_addr = is_ctrl ? smnPerfMonCtlLo7 : smnPerfMonCtrLo7;
+		*hi_base_addr = is_ctrl ? smnPerfMonCtlHi7 : smnPerfMonCtrHi7;
+		break;
+
+	}
+
+}
+
+/* get read counter address */
+static void df_v3_6_pmc_get_read_settings(struct amdgpu_device *adev,
+					  uint64_t config,
+					  int counter_idx,
+					  uint32_t *lo_base_addr,
+					  uint32_t *hi_base_addr)
+{
+	df_v3_6_pmc_get_addr(adev, config, counter_idx, 0, lo_base_addr,
+								hi_base_addr);
+}
+
+/* get control counter settings i.e. address and values to set */
+static int df_v3_6_pmc_get_ctrl_settings(struct amdgpu_device *adev,
+					  uint64_t config,
+					  int counter_idx,
+					  uint32_t *lo_base_addr,
+					  uint32_t *hi_base_addr,
+					  uint32_t *lo_val,
+					  uint32_t *hi_val,
+					  bool is_enable)
+{
+
+	uint32_t eventsel, instance, unitmask;
+	uint32_t instance_10, instance_5432, instance_76;
+
+	df_v3_6_pmc_get_addr(adev, config, counter_idx, 1, lo_base_addr,
+				hi_base_addr);
+
+	if ((*lo_base_addr == 0) || (*hi_base_addr == 0)) {
+		DRM_ERROR("[DF PMC] addressing not retrieved! Lo: %x, Hi: %x",
+				*lo_base_addr, *hi_base_addr);
+		return -ENXIO;
+	}
+
+	eventsel = DF_V3_6_GET_EVENT(config) & 0x3f;
+	unitmask = DF_V3_6_GET_UNITMASK(config) & 0xf;
+	instance = DF_V3_6_GET_INSTANCE(config);
+
+	instance_10 = instance & 0x3;
+	instance_5432 = (instance >> 2) & 0xf;
+	instance_76 = (instance >> 6) & 0x3;
+
+	*lo_val = (unitmask << 8) | (instance_10 << 6) | eventsel;
+	*lo_val = is_enable ? *lo_val | (1 << 22) : *lo_val & ~(1 << 22);
+	*hi_val = (instance_76 << 29) | instance_5432;
+
+	DRM_DEBUG_DRIVER("config=%llx addr=%08x:%08x val=%08x:%08x",
+		config, *lo_base_addr, *hi_base_addr, *lo_val, *hi_val);
+
+	return 0;
+}
+
+/* add df performance counters for read */
+static int df_v3_6_pmc_add_cntr(struct amdgpu_device *adev,
+				   uint64_t config)
+{
+	int i;
+
+	for (i = 0; i < DF_V3_6_MAX_COUNTERS; i++) {
+		if (adev->df_perfmon_config_assign_mask[i] == 0U) {
+			adev->df_perfmon_config_assign_mask[i] =
+							config & 0x0FFFFFFUL;
+			return i;
+		}
+	}
+
+	return -ENOSPC;
+}
+
+#define DEFERRED_ARM_MASK	(1 << 31)
+static int df_v3_6_pmc_set_deferred(struct amdgpu_device *adev,
+				    uint64_t config, int counter_idx,
+				    bool is_deferred)
+{
+
+	if (!df_v3_6_pmc_has_counter(adev, config, counter_idx))
+		return -EINVAL;
+
+	if (is_deferred)
+		adev->df_perfmon_config_assign_mask[counter_idx] |=
+							DEFERRED_ARM_MASK;
+	else
+		adev->df_perfmon_config_assign_mask[counter_idx] &=
+							~DEFERRED_ARM_MASK;
+
+	return 0;
+}
+
+static bool df_v3_6_pmc_is_deferred(struct amdgpu_device *adev,
+				    uint64_t config,
+				    int counter_idx)
+{
+	return	(df_v3_6_pmc_has_counter(adev, config, counter_idx) &&
+			(adev->df_perfmon_config_assign_mask[counter_idx]
+				& DEFERRED_ARM_MASK));
+
+}
+
+/* release performance counter */
+static void df_v3_6_pmc_release_cntr(struct amdgpu_device *adev,
+				     uint64_t config,
+				     int counter_idx)
+{
+	if (df_v3_6_pmc_has_counter(adev, config, counter_idx))
+		adev->df_perfmon_config_assign_mask[counter_idx] = 0ULL;
+}
+
+
+static void df_v3_6_reset_perfmon_cntr(struct amdgpu_device *adev,
+					 uint64_t config,
+					 int counter_idx)
+{
+	uint32_t lo_base_addr = 0, hi_base_addr = 0;
+
+	df_v3_6_pmc_get_read_settings(adev, config, counter_idx, &lo_base_addr,
+				      &hi_base_addr);
+
+	if ((lo_base_addr == 0) || (hi_base_addr == 0))
+		return;
+
+	df_v3_6_perfmon_wreg(adev, lo_base_addr, 0, hi_base_addr, 0);
+}
+
+/* return available counter if is_add == 1 otherwise return error status. */
+static int df_v3_6_pmc_start(struct amdgpu_device *adev, uint64_t config,
+			     int counter_idx, int is_add)
+{
+	uint32_t lo_base_addr, hi_base_addr, lo_val, hi_val;
+	int err = 0, ret = 0;
+
+	switch (adev->asic_type) {
+	case CHIP_VEGA20:
+	case CHIP_ARCTURUS:
+		if (is_add)
+			return df_v3_6_pmc_add_cntr(adev, config);
+
+		ret = df_v3_6_pmc_get_ctrl_settings(adev,
+					config,
+					counter_idx,
+					&lo_base_addr,
+					&hi_base_addr,
+					&lo_val,
+					&hi_val,
+					true);
+
+		if (ret)
+			return ret;
+
+		err = df_v3_6_perfmon_arm_with_retry(adev,
+						     lo_base_addr,
+						     lo_val,
+						     hi_base_addr,
+						     hi_val);
+
+		if (err)
+			ret = df_v3_6_pmc_set_deferred(adev, config,
+							counter_idx, true);
+
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+static int df_v3_6_pmc_stop(struct amdgpu_device *adev, uint64_t config,
+			    int counter_idx, int is_remove)
+{
+	uint32_t lo_base_addr, hi_base_addr, lo_val, hi_val;
+	int ret = 0;
+
+	switch (adev->asic_type) {
+	case CHIP_VEGA20:
+	case CHIP_ARCTURUS:
+		ret = df_v3_6_pmc_get_ctrl_settings(adev,
+			config,
+			counter_idx,
+			&lo_base_addr,
+			&hi_base_addr,
+			&lo_val,
+			&hi_val,
+			false);
+
+		if (ret)
+			return ret;
+
+		df_v3_6_perfmon_wreg(adev, lo_base_addr, lo_val,
+							hi_base_addr, hi_val);
+
+		if (is_remove) {
+			df_v3_6_reset_perfmon_cntr(adev, config, counter_idx);
+			df_v3_6_pmc_release_cntr(adev, config, counter_idx);
+		}
+
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+static void df_v3_6_pmc_get_count(struct amdgpu_device *adev,
+				  uint64_t config,
+				  int counter_idx,
+				  uint64_t *count)
+{
+	uint32_t lo_base_addr = 0, hi_base_addr = 0, lo_val = 0, hi_val = 0;
+	*count = 0;
+
+	switch (adev->asic_type) {
+	case CHIP_VEGA20:
+	case CHIP_ARCTURUS:
+		df_v3_6_pmc_get_read_settings(adev, config, counter_idx,
+						&lo_base_addr, &hi_base_addr);
+
+		if ((lo_base_addr == 0) || (hi_base_addr == 0))
+			return;
+
+		/* rearm the counter or throw away count value on failure */
+		if (df_v3_6_pmc_is_deferred(adev, config, counter_idx)) {
+			int rearm_err = df_v3_6_perfmon_arm_with_status(adev,
+							lo_base_addr, lo_val,
+							hi_base_addr, hi_val);
+
+			if (rearm_err)
+				return;
+
+			df_v3_6_pmc_set_deferred(adev, config, counter_idx,
+									false);
+		}
+
+		df_v3_6_perfmon_rreg(adev, lo_base_addr, &lo_val,
+				hi_base_addr, &hi_val);
+
+		*count  = ((hi_val | 0ULL) << 32) | (lo_val | 0ULL);
+
+		if (*count >= DF_V3_6_PERFMON_OVERFLOW)
+			*count = 0;
+
+		DRM_DEBUG_DRIVER("config=%llx addr=%08x:%08x val=%08x:%08x",
+			 config, lo_base_addr, hi_base_addr, lo_val, hi_val);
+
+		break;
+	default:
+		break;
+	}
+}
+
+static bool df_v3_6_query_ras_poison_mode(struct amdgpu_device *adev)
+{
+	uint32_t hw_assert_msklo, hw_assert_mskhi;
+	uint32_t v0, v1, v28, v31;
+
+	hw_assert_msklo = RREG32_SOC15(DF, 0,
+				mmDF_CS_UMC_AON0_HardwareAssertMaskLow);
+	hw_assert_mskhi = RREG32_SOC15(DF, 0,
+				mmDF_NCS_PG0_HardwareAssertMaskHigh);
+
+	v0 = REG_GET_FIELD(hw_assert_msklo,
+		DF_CS_UMC_AON0_HardwareAssertMaskLow, HWAssertMsk0);
+	v1 = REG_GET_FIELD(hw_assert_msklo,
+		DF_CS_UMC_AON0_HardwareAssertMaskLow, HWAssertMsk1);
+	v28 = REG_GET_FIELD(hw_assert_mskhi,
+		DF_NCS_PG0_HardwareAssertMaskHigh, HWAssertMsk28);
+	v31 = REG_GET_FIELD(hw_assert_mskhi,
+		DF_NCS_PG0_HardwareAssertMaskHigh, HWAssertMsk31);
+
+	if (v0 && v1 && v28 && v31)
+		return true;
+	else if (!v0 && !v1 && !v28 && !v31)
+		return false;
+	else {
+		dev_warn(adev->dev, "DF poison setting is inconsistent(%d:%d:%d:%d)!\n",
+				v0, v1, v28, v31);
+		return false;
+	}
+}
+
+const struct amdgpu_df_funcs df_v3_6_funcs = {
+	.sw_init = df_v3_6_sw_init,
+	.sw_fini = df_v3_6_sw_fini,
+	.enable_broadcast_mode = df_v3_6_enable_broadcast_mode,
+	.get_fb_channel_number = df_v3_6_get_fb_channel_number,
+	.get_hbm_channel_number = df_v3_6_get_hbm_channel_number,
+	.update_medium_grain_clock_gating =
+			df_v3_6_update_medium_grain_clock_gating,
+	.get_clockgating_state = df_v3_6_get_clockgating_state,
+	.pmc_start = df_v3_6_pmc_start,
+	.pmc_stop = df_v3_6_pmc_stop,
+	.pmc_get_count = df_v3_6_pmc_get_count,
+	.get_fica = df_v3_6_get_fica,
+	.set_fica = df_v3_6_set_fica,
+	.query_ras_poison_mode = df_v3_6_query_ras_poison_mode,
+};