vcn_v2_5.c

/*
 * Copyright 2019 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 <linux/firmware.h>

#include "amdgpu.h"
#include "amdgpu_vcn.h"
#include "amdgpu_pm.h"
#include "soc15.h"
#include "soc15d.h"
#include "vcn_v2_0.h"
#include "mmsch_v1_0.h"

#include "vcn/vcn_2_5_offset.h"
#include "vcn/vcn_2_5_sh_mask.h"
#include "ivsrcid/vcn/irqsrcs_vcn_2_0.h"

#define mmUVD_CONTEXT_ID_INTERNAL_OFFSET			0x27
#define mmUVD_GPCOM_VCPU_CMD_INTERNAL_OFFSET			0x0f
#define mmUVD_GPCOM_VCPU_DATA0_INTERNAL_OFFSET			0x10
#define mmUVD_GPCOM_VCPU_DATA1_INTERNAL_OFFSET			0x11
#define mmUVD_NO_OP_INTERNAL_OFFSET				0x29
#define mmUVD_GP_SCRATCH8_INTERNAL_OFFSET			0x66
#define mmUVD_SCRATCH9_INTERNAL_OFFSET				0xc01d

#define mmUVD_LMI_RBC_IB_VMID_INTERNAL_OFFSET			0x431
#define mmUVD_LMI_RBC_IB_64BIT_BAR_LOW_INTERNAL_OFFSET		0x3b4
#define mmUVD_LMI_RBC_IB_64BIT_BAR_HIGH_INTERNAL_OFFSET 	0x3b5
#define mmUVD_RBC_IB_SIZE_INTERNAL_OFFSET			0x25c

#define VCN25_MAX_HW_INSTANCES_ARCTURUS			2

static void vcn_v2_5_set_dec_ring_funcs(struct amdgpu_device *adev);
static void vcn_v2_5_set_enc_ring_funcs(struct amdgpu_device *adev);
static void vcn_v2_5_set_irq_funcs(struct amdgpu_device *adev);
static int vcn_v2_5_set_powergating_state(void *handle,
				enum amd_powergating_state state);
static int vcn_v2_5_pause_dpg_mode(struct amdgpu_device *adev,
				int inst_idx, struct dpg_pause_state *new_state);
static int vcn_v2_5_sriov_start(struct amdgpu_device *adev);

static int amdgpu_ih_clientid_vcns[] = {
	SOC15_IH_CLIENTID_VCN,
	SOC15_IH_CLIENTID_VCN1
};

/**
 * vcn_v2_5_early_init - set function pointers
 *
 * @handle: amdgpu_device pointer
 *
 * Set ring and irq function pointers
 */
static int vcn_v2_5_early_init(void *handle)
{
	struct amdgpu_device *adev = (struct amdgpu_device *)handle;

	if (amdgpu_sriov_vf(adev)) {
		adev->vcn.num_vcn_inst = 2;
		adev->vcn.harvest_config = 0;
		adev->vcn.num_enc_rings = 1;
	} else {
		if (adev->asic_type == CHIP_ARCTURUS) {
			u32 harvest;
			int i;

			adev->vcn.num_vcn_inst = VCN25_MAX_HW_INSTANCES_ARCTURUS;
			for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
				harvest = RREG32_SOC15(UVD, i, mmCC_UVD_HARVESTING);
				if (harvest & CC_UVD_HARVESTING__UVD_DISABLE_MASK)
					adev->vcn.harvest_config |= 1 << i;
			}

			if (adev->vcn.harvest_config == (AMDGPU_VCN_HARVEST_VCN0 |
						AMDGPU_VCN_HARVEST_VCN1))
				/* both instances are harvested, disable the block */
				return -ENOENT;
		} else
			adev->vcn.num_vcn_inst = 1;

		adev->vcn.num_enc_rings = 2;
	}

	vcn_v2_5_set_dec_ring_funcs(adev);
	vcn_v2_5_set_enc_ring_funcs(adev);
	vcn_v2_5_set_irq_funcs(adev);

	return 0;
}

/**
 * vcn_v2_5_sw_init - sw init for VCN block
 *
 * @handle: amdgpu_device pointer
 *
 * Load firmware and sw initialization
 */
static int vcn_v2_5_sw_init(void *handle)
{
	struct amdgpu_ring *ring;
	int i, j, r;
	struct amdgpu_device *adev = (struct amdgpu_device *)handle;

	for (j = 0; j < adev->vcn.num_vcn_inst; j++) {
		if (adev->vcn.harvest_config & (1 << j))
			continue;
		/* VCN DEC TRAP */
		r = amdgpu_irq_add_id(adev, amdgpu_ih_clientid_vcns[j],
				VCN_2_0__SRCID__UVD_SYSTEM_MESSAGE_INTERRUPT, &adev->vcn.inst[j].irq);
		if (r)
			return r;

		/* VCN ENC TRAP */
		for (i = 0; i < adev->vcn.num_enc_rings; ++i) {
			r = amdgpu_irq_add_id(adev, amdgpu_ih_clientid_vcns[j],
				i + VCN_2_0__SRCID__UVD_ENC_GENERAL_PURPOSE, &adev->vcn.inst[j].irq);
			if (r)
				return r;
		}
	}

	r = amdgpu_vcn_sw_init(adev);
	if (r)
		return r;

	if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
		const struct common_firmware_header *hdr;
		hdr = (const struct common_firmware_header *)adev->vcn.fw->data;
		adev->firmware.ucode[AMDGPU_UCODE_ID_VCN].ucode_id = AMDGPU_UCODE_ID_VCN;
		adev->firmware.ucode[AMDGPU_UCODE_ID_VCN].fw = adev->vcn.fw;
		adev->firmware.fw_size +=
			ALIGN(le32_to_cpu(hdr->ucode_size_bytes), PAGE_SIZE);

		if (adev->vcn.num_vcn_inst == VCN25_MAX_HW_INSTANCES_ARCTURUS) {
			adev->firmware.ucode[AMDGPU_UCODE_ID_VCN1].ucode_id = AMDGPU_UCODE_ID_VCN1;
			adev->firmware.ucode[AMDGPU_UCODE_ID_VCN1].fw = adev->vcn.fw;
			adev->firmware.fw_size +=
				ALIGN(le32_to_cpu(hdr->ucode_size_bytes), PAGE_SIZE);
		}
		DRM_INFO("PSP loading VCN firmware\n");
	}

	r = amdgpu_vcn_resume(adev);
	if (r)
		return r;

	for (j = 0; j < adev->vcn.num_vcn_inst; j++) {
		if (adev->vcn.harvest_config & (1 << j))
			continue;
		adev->vcn.internal.context_id = mmUVD_CONTEXT_ID_INTERNAL_OFFSET;
		adev->vcn.internal.ib_vmid = mmUVD_LMI_RBC_IB_VMID_INTERNAL_OFFSET;
		adev->vcn.internal.ib_bar_low = mmUVD_LMI_RBC_IB_64BIT_BAR_LOW_INTERNAL_OFFSET;
		adev->vcn.internal.ib_bar_high = mmUVD_LMI_RBC_IB_64BIT_BAR_HIGH_INTERNAL_OFFSET;
		adev->vcn.internal.ib_size = mmUVD_RBC_IB_SIZE_INTERNAL_OFFSET;
		adev->vcn.internal.gp_scratch8 = mmUVD_GP_SCRATCH8_INTERNAL_OFFSET;

		adev->vcn.internal.scratch9 = mmUVD_SCRATCH9_INTERNAL_OFFSET;
		adev->vcn.inst[j].external.scratch9 = SOC15_REG_OFFSET(UVD, j, mmUVD_SCRATCH9);
		adev->vcn.internal.data0 = mmUVD_GPCOM_VCPU_DATA0_INTERNAL_OFFSET;
		adev->vcn.inst[j].external.data0 = SOC15_REG_OFFSET(UVD, j, mmUVD_GPCOM_VCPU_DATA0);
		adev->vcn.internal.data1 = mmUVD_GPCOM_VCPU_DATA1_INTERNAL_OFFSET;
		adev->vcn.inst[j].external.data1 = SOC15_REG_OFFSET(UVD, j, mmUVD_GPCOM_VCPU_DATA1);
		adev->vcn.internal.cmd = mmUVD_GPCOM_VCPU_CMD_INTERNAL_OFFSET;
		adev->vcn.inst[j].external.cmd = SOC15_REG_OFFSET(UVD, j, mmUVD_GPCOM_VCPU_CMD);
		adev->vcn.internal.nop = mmUVD_NO_OP_INTERNAL_OFFSET;
		adev->vcn.inst[j].external.nop = SOC15_REG_OFFSET(UVD, j, mmUVD_NO_OP);

		ring = &adev->vcn.inst[j].ring_dec;
		ring->use_doorbell = true;

		ring->doorbell_index = (adev->doorbell_index.vcn.vcn_ring0_1 << 1) +
				(amdgpu_sriov_vf(adev) ? 2*j : 8*j);
		sprintf(ring->name, "vcn_dec_%d", j);
		r = amdgpu_ring_init(adev, ring, 512, &adev->vcn.inst[j].irq, 0);
		if (r)
			return r;

		for (i = 0; i < adev->vcn.num_enc_rings; ++i) {
			ring = &adev->vcn.inst[j].ring_enc[i];
			ring->use_doorbell = true;

			ring->doorbell_index = (adev->doorbell_index.vcn.vcn_ring0_1 << 1) +
					(amdgpu_sriov_vf(adev) ? (1 + i + 2*j) : (2 + i + 8*j));

			sprintf(ring->name, "vcn_enc_%d.%d", j, i);
			r = amdgpu_ring_init(adev, ring, 512, &adev->vcn.inst[j].irq, 0);
			if (r)
				return r;
		}
	}

	if (amdgpu_sriov_vf(adev)) {
		r = amdgpu_virt_alloc_mm_table(adev);
		if (r)
			return r;
	}

	if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)
		adev->vcn.pause_dpg_mode = vcn_v2_5_pause_dpg_mode;

	return 0;
}

/**
 * vcn_v2_5_sw_fini - sw fini for VCN block
 *
 * @handle: amdgpu_device pointer
 *
 * VCN suspend and free up sw allocation
 */
static int vcn_v2_5_sw_fini(void *handle)
{
	int r;
	struct amdgpu_device *adev = (struct amdgpu_device *)handle;

	if (amdgpu_sriov_vf(adev))
		amdgpu_virt_free_mm_table(adev);

	r = amdgpu_vcn_suspend(adev);
	if (r)
		return r;

	r = amdgpu_vcn_sw_fini(adev);

	return r;
}

/**
 * vcn_v2_5_hw_init - start and test VCN block
 *
 * @handle: amdgpu_device pointer
 *
 * Initialize the hardware, boot up the VCPU and do some testing
 */
static int vcn_v2_5_hw_init(void *handle)
{
	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
	struct amdgpu_ring *ring;
	int i, j, r = 0;

	if (amdgpu_sriov_vf(adev))
		r = vcn_v2_5_sriov_start(adev);

	for (j = 0; j < adev->vcn.num_vcn_inst; ++j) {
		if (adev->vcn.harvest_config & (1 << j))
			continue;

		if (amdgpu_sriov_vf(adev)) {
			adev->vcn.inst[j].ring_enc[0].sched.ready = true;
			adev->vcn.inst[j].ring_enc[1].sched.ready = false;
			adev->vcn.inst[j].ring_enc[2].sched.ready = false;
			adev->vcn.inst[j].ring_dec.sched.ready = true;
		} else {

			ring = &adev->vcn.inst[j].ring_dec;

			adev->nbio.funcs->vcn_doorbell_range(adev, ring->use_doorbell,
						     ring->doorbell_index, j);

			r = amdgpu_ring_test_helper(ring);
			if (r)
				goto done;

			for (i = 0; i < adev->vcn.num_enc_rings; ++i) {
				ring = &adev->vcn.inst[j].ring_enc[i];
				r = amdgpu_ring_test_helper(ring);
				if (r)
					goto done;
			}
		}
	}

done:
	if (!r)
		DRM_INFO("VCN decode and encode initialized successfully(under %s).\n",
			(adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)?"DPG Mode":"SPG Mode");

	return r;
}

/**
 * vcn_v2_5_hw_fini - stop the hardware block
 *
 * @handle: amdgpu_device pointer
 *
 * Stop the VCN block, mark ring as not ready any more
 */
static int vcn_v2_5_hw_fini(void *handle)
{
	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
	int i;

	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
		if (adev->vcn.harvest_config & (1 << i))
			continue;

		if ((adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) ||
		    (adev->vcn.cur_state != AMD_PG_STATE_GATE &&
		     RREG32_SOC15(VCN, i, mmUVD_STATUS)))
			vcn_v2_5_set_powergating_state(adev, AMD_PG_STATE_GATE);
	}

	return 0;
}

/**
 * vcn_v2_5_suspend - suspend VCN block
 *
 * @handle: amdgpu_device pointer
 *
 * HW fini and suspend VCN block
 */
static int vcn_v2_5_suspend(void *handle)
{
	int r;
	struct amdgpu_device *adev = (struct amdgpu_device *)handle;

	r = vcn_v2_5_hw_fini(adev);
	if (r)
		return r;

	r = amdgpu_vcn_suspend(adev);

	return r;
}

/**
 * vcn_v2_5_resume - resume VCN block
 *
 * @handle: amdgpu_device pointer
 *
 * Resume firmware and hw init VCN block
 */
static int vcn_v2_5_resume(void *handle)
{
	int r;
	struct amdgpu_device *adev = (struct amdgpu_device *)handle;

	r = amdgpu_vcn_resume(adev);
	if (r)
		return r;

	r = vcn_v2_5_hw_init(adev);

	return r;
}

/**
 * vcn_v2_5_mc_resume - memory controller programming
 *
 * @adev: amdgpu_device pointer
 *
 * Let the VCN memory controller know it's offsets
 */
static void vcn_v2_5_mc_resume(struct amdgpu_device *adev)
{
	uint32_t size = AMDGPU_GPU_PAGE_ALIGN(adev->vcn.fw->size + 4);
	uint32_t offset;
	int i;

	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
		if (adev->vcn.harvest_config & (1 << i))
			continue;
		/* cache window 0: fw */
		if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
			WREG32_SOC15(UVD, i, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW,
				(adev->firmware.ucode[AMDGPU_UCODE_ID_VCN + i].tmr_mc_addr_lo));
			WREG32_SOC15(UVD, i, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH,
				(adev->firmware.ucode[AMDGPU_UCODE_ID_VCN + i].tmr_mc_addr_hi));
			WREG32_SOC15(UVD, i, mmUVD_VCPU_CACHE_OFFSET0, 0);
			offset = 0;
		} else {
			WREG32_SOC15(UVD, i, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW,
				lower_32_bits(adev->vcn.inst[i].gpu_addr));
			WREG32_SOC15(UVD, i, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH,
				upper_32_bits(adev->vcn.inst[i].gpu_addr));
			offset = size;
			WREG32_SOC15(UVD, i, mmUVD_VCPU_CACHE_OFFSET0,
				AMDGPU_UVD_FIRMWARE_OFFSET >> 3);
		}
		WREG32_SOC15(UVD, i, mmUVD_VCPU_CACHE_SIZE0, size);

		/* cache window 1: stack */
		WREG32_SOC15(UVD, i, mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_LOW,
			lower_32_bits(adev->vcn.inst[i].gpu_addr + offset));
		WREG32_SOC15(UVD, i, mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_HIGH,
			upper_32_bits(adev->vcn.inst[i].gpu_addr + offset));
		WREG32_SOC15(UVD, i, mmUVD_VCPU_CACHE_OFFSET1, 0);
		WREG32_SOC15(UVD, i, mmUVD_VCPU_CACHE_SIZE1, AMDGPU_VCN_STACK_SIZE);

		/* cache window 2: context */
		WREG32_SOC15(UVD, i, mmUVD_LMI_VCPU_CACHE2_64BIT_BAR_LOW,
			lower_32_bits(adev->vcn.inst[i].gpu_addr + offset + AMDGPU_VCN_STACK_SIZE));
		WREG32_SOC15(UVD, i, mmUVD_LMI_VCPU_CACHE2_64BIT_BAR_HIGH,
			upper_32_bits(adev->vcn.inst[i].gpu_addr + offset + AMDGPU_VCN_STACK_SIZE));
		WREG32_SOC15(UVD, i, mmUVD_VCPU_CACHE_OFFSET2, 0);
		WREG32_SOC15(UVD, i, mmUVD_VCPU_CACHE_SIZE2, AMDGPU_VCN_CONTEXT_SIZE);
	}
}

static void vcn_v2_5_mc_resume_dpg_mode(struct amdgpu_device *adev, int inst_idx, bool indirect)
{
	uint32_t size = AMDGPU_GPU_PAGE_ALIGN(adev->vcn.fw->size + 4);
	uint32_t offset;

	/* cache window 0: fw */
	if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
		if (!indirect) {
			WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
				UVD, 0, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW),
				(adev->firmware.ucode[AMDGPU_UCODE_ID_VCN + inst_idx].tmr_mc_addr_lo), 0, indirect);
			WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
				UVD, 0, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH),
				(adev->firmware.ucode[AMDGPU_UCODE_ID_VCN + inst_idx].tmr_mc_addr_hi), 0, indirect);
			WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
				UVD, 0, mmUVD_VCPU_CACHE_OFFSET0), 0, 0, indirect);
		} else {
			WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
				UVD, 0, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW), 0, 0, indirect);
			WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
				UVD, 0, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH), 0, 0, indirect);
			WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
				UVD, 0, mmUVD_VCPU_CACHE_OFFSET0), 0, 0, indirect);
		}
		offset = 0;
	} else {
		WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
			UVD, 0, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW),
			lower_32_bits(adev->vcn.inst[inst_idx].gpu_addr), 0, indirect);
		WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
			UVD, 0, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH),
			upper_32_bits(adev->vcn.inst[inst_idx].gpu_addr), 0, indirect);
		offset = size;
		WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
			UVD, 0, mmUVD_VCPU_CACHE_OFFSET0),
			AMDGPU_UVD_FIRMWARE_OFFSET >> 3, 0, indirect);
	}

	if (!indirect)
		WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
			UVD, 0, mmUVD_VCPU_CACHE_SIZE0), size, 0, indirect);
	else
		WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
			UVD, 0, mmUVD_VCPU_CACHE_SIZE0), 0, 0, indirect);

	/* cache window 1: stack */
	if (!indirect) {
		WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
			UVD, 0, mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_LOW),
			lower_32_bits(adev->vcn.inst[inst_idx].gpu_addr + offset), 0, indirect);
		WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
			UVD, 0, mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_HIGH),
			upper_32_bits(adev->vcn.inst[inst_idx].gpu_addr + offset), 0, indirect);
		WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
			UVD, 0, mmUVD_VCPU_CACHE_OFFSET1), 0, 0, indirect);
	} else {
		WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
			UVD, 0, mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_LOW), 0, 0, indirect);
		WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
			UVD, 0, mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_HIGH), 0, 0, indirect);
		WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
			UVD, 0, mmUVD_VCPU_CACHE_OFFSET1), 0, 0, indirect);
	}
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_VCPU_CACHE_SIZE1), AMDGPU_VCN_STACK_SIZE, 0, indirect);

	/* cache window 2: context */
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_LMI_VCPU_CACHE2_64BIT_BAR_LOW),
		lower_32_bits(adev->vcn.inst[inst_idx].gpu_addr + offset + AMDGPU_VCN_STACK_SIZE), 0, indirect);
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_LMI_VCPU_CACHE2_64BIT_BAR_HIGH),
		upper_32_bits(adev->vcn.inst[inst_idx].gpu_addr + offset + AMDGPU_VCN_STACK_SIZE), 0, indirect);
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_VCPU_CACHE_OFFSET2), 0, 0, indirect);
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_VCPU_CACHE_SIZE2), AMDGPU_VCN_CONTEXT_SIZE, 0, indirect);

	/* non-cache window */
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_LMI_VCPU_NC0_64BIT_BAR_LOW), 0, 0, indirect);
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_LMI_VCPU_NC0_64BIT_BAR_HIGH), 0, 0, indirect);
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_VCPU_NONCACHE_OFFSET0), 0, 0, indirect);
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_VCPU_NONCACHE_SIZE0), 0, 0, indirect);

	/* VCN global tiling registers */
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_GFX8_ADDR_CONFIG), adev->gfx.config.gb_addr_config, 0, indirect);
}

/**
 * vcn_v2_5_disable_clock_gating - disable VCN clock gating
 *
 * @adev: amdgpu_device pointer
 *
 * Disable clock gating for VCN block
 */
static void vcn_v2_5_disable_clock_gating(struct amdgpu_device *adev)
{
	uint32_t data;
	int ret = 0;
	int i;

	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
		if (adev->vcn.harvest_config & (1 << i))
			continue;
		/* UVD disable CGC */
		data = RREG32_SOC15(VCN, i, mmUVD_CGC_CTRL);
		if (adev->cg_flags & AMD_CG_SUPPORT_VCN_MGCG)
			data |= 1 << UVD_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;
		else
			data &= ~UVD_CGC_CTRL__DYN_CLOCK_MODE_MASK;
		data |= 1 << UVD_CGC_CTRL__CLK_GATE_DLY_TIMER__SHIFT;
		data |= 4 << UVD_CGC_CTRL__CLK_OFF_DELAY__SHIFT;
		WREG32_SOC15(VCN, i, mmUVD_CGC_CTRL, data);

		data = RREG32_SOC15(VCN, i, mmUVD_CGC_GATE);
		data &= ~(UVD_CGC_GATE__SYS_MASK
			| UVD_CGC_GATE__UDEC_MASK
			| UVD_CGC_GATE__MPEG2_MASK
			| UVD_CGC_GATE__REGS_MASK
			| UVD_CGC_GATE__RBC_MASK
			| UVD_CGC_GATE__LMI_MC_MASK
			| UVD_CGC_GATE__LMI_UMC_MASK
			| UVD_CGC_GATE__IDCT_MASK
			| UVD_CGC_GATE__MPRD_MASK
			| UVD_CGC_GATE__MPC_MASK
			| UVD_CGC_GATE__LBSI_MASK
			| UVD_CGC_GATE__LRBBM_MASK
			| UVD_CGC_GATE__UDEC_RE_MASK
			| UVD_CGC_GATE__UDEC_CM_MASK
			| UVD_CGC_GATE__UDEC_IT_MASK
			| UVD_CGC_GATE__UDEC_DB_MASK
			| UVD_CGC_GATE__UDEC_MP_MASK
			| UVD_CGC_GATE__WCB_MASK
			| UVD_CGC_GATE__VCPU_MASK
			| UVD_CGC_GATE__MMSCH_MASK);

		WREG32_SOC15(VCN, i, mmUVD_CGC_GATE, data);

		SOC15_WAIT_ON_RREG(VCN, i, mmUVD_CGC_GATE, 0,  0xFFFFFFFF, ret);

		data = RREG32_SOC15(VCN, i, mmUVD_CGC_CTRL);
		data &= ~(UVD_CGC_CTRL__UDEC_RE_MODE_MASK
			| UVD_CGC_CTRL__UDEC_CM_MODE_MASK
			| UVD_CGC_CTRL__UDEC_IT_MODE_MASK
			| UVD_CGC_CTRL__UDEC_DB_MODE_MASK
			| UVD_CGC_CTRL__UDEC_MP_MODE_MASK
			| UVD_CGC_CTRL__SYS_MODE_MASK
			| UVD_CGC_CTRL__UDEC_MODE_MASK
			| UVD_CGC_CTRL__MPEG2_MODE_MASK
			| UVD_CGC_CTRL__REGS_MODE_MASK
			| UVD_CGC_CTRL__RBC_MODE_MASK
			| UVD_CGC_CTRL__LMI_MC_MODE_MASK
			| UVD_CGC_CTRL__LMI_UMC_MODE_MASK
			| UVD_CGC_CTRL__IDCT_MODE_MASK
			| UVD_CGC_CTRL__MPRD_MODE_MASK
			| UVD_CGC_CTRL__MPC_MODE_MASK
			| UVD_CGC_CTRL__LBSI_MODE_MASK
			| UVD_CGC_CTRL__LRBBM_MODE_MASK
			| UVD_CGC_CTRL__WCB_MODE_MASK
			| UVD_CGC_CTRL__VCPU_MODE_MASK
			| UVD_CGC_CTRL__MMSCH_MODE_MASK);
		WREG32_SOC15(VCN, i, mmUVD_CGC_CTRL, data);

		/* turn on */
		data = RREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_GATE);
		data |= (UVD_SUVD_CGC_GATE__SRE_MASK
			| UVD_SUVD_CGC_GATE__SIT_MASK
			| UVD_SUVD_CGC_GATE__SMP_MASK
			| UVD_SUVD_CGC_GATE__SCM_MASK
			| UVD_SUVD_CGC_GATE__SDB_MASK
			| UVD_SUVD_CGC_GATE__SRE_H264_MASK
			| UVD_SUVD_CGC_GATE__SRE_HEVC_MASK
			| UVD_SUVD_CGC_GATE__SIT_H264_MASK
			| UVD_SUVD_CGC_GATE__SIT_HEVC_MASK
			| UVD_SUVD_CGC_GATE__SCM_H264_MASK
			| UVD_SUVD_CGC_GATE__SCM_HEVC_MASK
			| UVD_SUVD_CGC_GATE__SDB_H264_MASK
			| UVD_SUVD_CGC_GATE__SDB_HEVC_MASK
			| UVD_SUVD_CGC_GATE__SCLR_MASK
			| UVD_SUVD_CGC_GATE__UVD_SC_MASK
			| UVD_SUVD_CGC_GATE__ENT_MASK
			| UVD_SUVD_CGC_GATE__SIT_HEVC_DEC_MASK
			| UVD_SUVD_CGC_GATE__SIT_HEVC_ENC_MASK
			| UVD_SUVD_CGC_GATE__SITE_MASK
			| UVD_SUVD_CGC_GATE__SRE_VP9_MASK
			| UVD_SUVD_CGC_GATE__SCM_VP9_MASK
			| UVD_SUVD_CGC_GATE__SIT_VP9_DEC_MASK
			| UVD_SUVD_CGC_GATE__SDB_VP9_MASK
			| UVD_SUVD_CGC_GATE__IME_HEVC_MASK);
		WREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_GATE, data);

		data = RREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_CTRL);
		data &= ~(UVD_SUVD_CGC_CTRL__SRE_MODE_MASK
			| UVD_SUVD_CGC_CTRL__SIT_MODE_MASK
			| UVD_SUVD_CGC_CTRL__SMP_MODE_MASK
			| UVD_SUVD_CGC_CTRL__SCM_MODE_MASK
			| UVD_SUVD_CGC_CTRL__SDB_MODE_MASK
			| UVD_SUVD_CGC_CTRL__SCLR_MODE_MASK
			| UVD_SUVD_CGC_CTRL__UVD_SC_MODE_MASK
			| UVD_SUVD_CGC_CTRL__ENT_MODE_MASK
			| UVD_SUVD_CGC_CTRL__IME_MODE_MASK
			| UVD_SUVD_CGC_CTRL__SITE_MODE_MASK);
		WREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_CTRL, data);
	}
}

static void vcn_v2_5_clock_gating_dpg_mode(struct amdgpu_device *adev,
		uint8_t sram_sel, int inst_idx, uint8_t indirect)
{
	uint32_t reg_data = 0;

	/* enable sw clock gating control */
	if (adev->cg_flags & AMD_CG_SUPPORT_VCN_MGCG)
		reg_data = 1 << UVD_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;
	else
		reg_data = 0 << UVD_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;
	reg_data |= 1 << UVD_CGC_CTRL__CLK_GATE_DLY_TIMER__SHIFT;
	reg_data |= 4 << UVD_CGC_CTRL__CLK_OFF_DELAY__SHIFT;
	reg_data &= ~(UVD_CGC_CTRL__UDEC_RE_MODE_MASK |
		 UVD_CGC_CTRL__UDEC_CM_MODE_MASK |
		 UVD_CGC_CTRL__UDEC_IT_MODE_MASK |
		 UVD_CGC_CTRL__UDEC_DB_MODE_MASK |
		 UVD_CGC_CTRL__UDEC_MP_MODE_MASK |
		 UVD_CGC_CTRL__SYS_MODE_MASK |
		 UVD_CGC_CTRL__UDEC_MODE_MASK |
		 UVD_CGC_CTRL__MPEG2_MODE_MASK |
		 UVD_CGC_CTRL__REGS_MODE_MASK |
		 UVD_CGC_CTRL__RBC_MODE_MASK |
		 UVD_CGC_CTRL__LMI_MC_MODE_MASK |
		 UVD_CGC_CTRL__LMI_UMC_MODE_MASK |
		 UVD_CGC_CTRL__IDCT_MODE_MASK |
		 UVD_CGC_CTRL__MPRD_MODE_MASK |
		 UVD_CGC_CTRL__MPC_MODE_MASK |
		 UVD_CGC_CTRL__LBSI_MODE_MASK |
		 UVD_CGC_CTRL__LRBBM_MODE_MASK |
		 UVD_CGC_CTRL__WCB_MODE_MASK |
		 UVD_CGC_CTRL__VCPU_MODE_MASK |
		 UVD_CGC_CTRL__MMSCH_MODE_MASK);
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_CGC_CTRL), reg_data, sram_sel, indirect);

	/* turn off clock gating */
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_CGC_GATE), 0, sram_sel, indirect);

	/* turn on SUVD clock gating */
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_SUVD_CGC_GATE), 1, sram_sel, indirect);

	/* turn on sw mode in UVD_SUVD_CGC_CTRL */
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_SUVD_CGC_CTRL), 0, sram_sel, indirect);
}

/**
 * vcn_v2_5_enable_clock_gating - enable VCN clock gating
 *
 * @adev: amdgpu_device pointer
 *
 * Enable clock gating for VCN block
 */
static void vcn_v2_5_enable_clock_gating(struct amdgpu_device *adev)
{
	uint32_t data = 0;
	int i;

	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
		if (adev->vcn.harvest_config & (1 << i))
			continue;
		/* enable UVD CGC */
		data = RREG32_SOC15(VCN, i, mmUVD_CGC_CTRL);
		if (adev->cg_flags & AMD_CG_SUPPORT_VCN_MGCG)
			data |= 1 << UVD_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;
		else
			data |= 0 << UVD_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;
		data |= 1 << UVD_CGC_CTRL__CLK_GATE_DLY_TIMER__SHIFT;
		data |= 4 << UVD_CGC_CTRL__CLK_OFF_DELAY__SHIFT;
		WREG32_SOC15(VCN, i, mmUVD_CGC_CTRL, data);

		data = RREG32_SOC15(VCN, i, mmUVD_CGC_CTRL);
		data |= (UVD_CGC_CTRL__UDEC_RE_MODE_MASK
			| UVD_CGC_CTRL__UDEC_CM_MODE_MASK
			| UVD_CGC_CTRL__UDEC_IT_MODE_MASK
			| UVD_CGC_CTRL__UDEC_DB_MODE_MASK
			| UVD_CGC_CTRL__UDEC_MP_MODE_MASK
			| UVD_CGC_CTRL__SYS_MODE_MASK
			| UVD_CGC_CTRL__UDEC_MODE_MASK
			| UVD_CGC_CTRL__MPEG2_MODE_MASK
			| UVD_CGC_CTRL__REGS_MODE_MASK
			| UVD_CGC_CTRL__RBC_MODE_MASK
			| UVD_CGC_CTRL__LMI_MC_MODE_MASK
			| UVD_CGC_CTRL__LMI_UMC_MODE_MASK
			| UVD_CGC_CTRL__IDCT_MODE_MASK
			| UVD_CGC_CTRL__MPRD_MODE_MASK
			| UVD_CGC_CTRL__MPC_MODE_MASK
			| UVD_CGC_CTRL__LBSI_MODE_MASK
			| UVD_CGC_CTRL__LRBBM_MODE_MASK
			| UVD_CGC_CTRL__WCB_MODE_MASK
			| UVD_CGC_CTRL__VCPU_MODE_MASK);
		WREG32_SOC15(VCN, i, mmUVD_CGC_CTRL, data);

		data = RREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_CTRL);
		data |= (UVD_SUVD_CGC_CTRL__SRE_MODE_MASK
			| UVD_SUVD_CGC_CTRL__SIT_MODE_MASK
			| UVD_SUVD_CGC_CTRL__SMP_MODE_MASK
			| UVD_SUVD_CGC_CTRL__SCM_MODE_MASK
			| UVD_SUVD_CGC_CTRL__SDB_MODE_MASK
			| UVD_SUVD_CGC_CTRL__SCLR_MODE_MASK
			| UVD_SUVD_CGC_CTRL__UVD_SC_MODE_MASK
			| UVD_SUVD_CGC_CTRL__ENT_MODE_MASK
			| UVD_SUVD_CGC_CTRL__IME_MODE_MASK
			| UVD_SUVD_CGC_CTRL__SITE_MODE_MASK);
		WREG32_SOC15(VCN, i, mmUVD_SUVD_CGC_CTRL, data);
	}
}

static int vcn_v2_5_start_dpg_mode(struct amdgpu_device *adev, int inst_idx, bool indirect)
{
	struct amdgpu_ring *ring;
	uint32_t rb_bufsz, tmp;

	/* disable register anti-hang mechanism */
	WREG32_P(SOC15_REG_OFFSET(UVD, inst_idx, mmUVD_POWER_STATUS), 1,
		~UVD_POWER_STATUS__UVD_POWER_STATUS_MASK);
	/* enable dynamic power gating mode */
	tmp = RREG32_SOC15(UVD, inst_idx, mmUVD_POWER_STATUS);
	tmp |= UVD_POWER_STATUS__UVD_PG_MODE_MASK;
	tmp |= UVD_POWER_STATUS__UVD_PG_EN_MASK;
	WREG32_SOC15(UVD, inst_idx, mmUVD_POWER_STATUS, tmp);

	if (indirect)
		adev->vcn.inst[inst_idx].dpg_sram_curr_addr = (uint32_t*)adev->vcn.inst[inst_idx].dpg_sram_cpu_addr;

	/* enable clock gating */
	vcn_v2_5_clock_gating_dpg_mode(adev, 0, inst_idx, indirect);

	/* enable VCPU clock */
	tmp = (0xFF << UVD_VCPU_CNTL__PRB_TIMEOUT_VAL__SHIFT);
	tmp |= UVD_VCPU_CNTL__CLK_EN_MASK;
	tmp |= UVD_VCPU_CNTL__BLK_RST_MASK;
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_VCPU_CNTL), tmp, 0, indirect);

	/* disable master interupt */
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_MASTINT_EN), 0, 0, indirect);

	/* setup mmUVD_LMI_CTRL */
	tmp = (0x8 | UVD_LMI_CTRL__WRITE_CLEAN_TIMER_EN_MASK |
		UVD_LMI_CTRL__REQ_MODE_MASK |
		UVD_LMI_CTRL__CRC_RESET_MASK |
		UVD_LMI_CTRL__MASK_MC_URGENT_MASK |
		UVD_LMI_CTRL__DATA_COHERENCY_EN_MASK |
		UVD_LMI_CTRL__VCPU_DATA_COHERENCY_EN_MASK |
		(8 << UVD_LMI_CTRL__WRITE_CLEAN_TIMER__SHIFT) |
		0x00100000L);
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_LMI_CTRL), tmp, 0, indirect);

	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_MPC_CNTL),
		0x2 << UVD_MPC_CNTL__REPLACEMENT_MODE__SHIFT, 0, indirect);

	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_MPC_SET_MUXA0),
		((0x1 << UVD_MPC_SET_MUXA0__VARA_1__SHIFT) |
		 (0x2 << UVD_MPC_SET_MUXA0__VARA_2__SHIFT) |
		 (0x3 << UVD_MPC_SET_MUXA0__VARA_3__SHIFT) |
		 (0x4 << UVD_MPC_SET_MUXA0__VARA_4__SHIFT)), 0, indirect);

	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_MPC_SET_MUXB0),
		((0x1 << UVD_MPC_SET_MUXB0__VARB_1__SHIFT) |
		 (0x2 << UVD_MPC_SET_MUXB0__VARB_2__SHIFT) |
		 (0x3 << UVD_MPC_SET_MUXB0__VARB_3__SHIFT) |
		 (0x4 << UVD_MPC_SET_MUXB0__VARB_4__SHIFT)), 0, indirect);

	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_MPC_SET_MUX),
		((0x0 << UVD_MPC_SET_MUX__SET_0__SHIFT) |
		 (0x1 << UVD_MPC_SET_MUX__SET_1__SHIFT) |
		 (0x2 << UVD_MPC_SET_MUX__SET_2__SHIFT)), 0, indirect);

	vcn_v2_5_mc_resume_dpg_mode(adev, inst_idx, indirect);

	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_REG_XX_MASK), 0x10, 0, indirect);
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_RBC_XX_IB_REG_CHECK), 0x3, 0, indirect);

	/* enable LMI MC and UMC channels */
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_LMI_CTRL2), 0, 0, indirect);

	/* unblock VCPU register access */
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_RB_ARB_CTRL), 0, 0, indirect);

	tmp = (0xFF << UVD_VCPU_CNTL__PRB_TIMEOUT_VAL__SHIFT);
	tmp |= UVD_VCPU_CNTL__CLK_EN_MASK;
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_VCPU_CNTL), tmp, 0, indirect);

	/* enable master interrupt */
	WREG32_SOC15_DPG_MODE_2_0(inst_idx, SOC15_DPG_MODE_OFFSET_2_0(
		UVD, 0, mmUVD_MASTINT_EN),
		UVD_MASTINT_EN__VCPU_EN_MASK, 0, indirect);

	if (indirect)
		psp_update_vcn_sram(adev, inst_idx, adev->vcn.inst[inst_idx].dpg_sram_gpu_addr,
				    (uint32_t)((uintptr_t)adev->vcn.inst[inst_idx].dpg_sram_curr_addr -
					       (uintptr_t)adev->vcn.inst[inst_idx].dpg_sram_cpu_addr));

	ring = &adev->vcn.inst[inst_idx].ring_dec;
	/* force RBC into idle state */
	rb_bufsz = order_base_2(ring->ring_size);
	tmp = REG_SET_FIELD(0, UVD_RBC_RB_CNTL, RB_BUFSZ, rb_bufsz);
	tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_BLKSZ, 1);
	tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_NO_FETCH, 1);
	tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_NO_UPDATE, 1);
	tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_RPTR_WR_EN, 1);
	WREG32_SOC15(UVD, inst_idx, mmUVD_RBC_RB_CNTL, tmp);

	/* set the write pointer delay */
	WREG32_SOC15(UVD, inst_idx, mmUVD_RBC_RB_WPTR_CNTL, 0);

	/* set the wb address */
	WREG32_SOC15(UVD, inst_idx, mmUVD_RBC_RB_RPTR_ADDR,
		(upper_32_bits(ring->gpu_addr) >> 2));

	/* programm the RB_BASE for ring buffer */
	WREG32_SOC15(UVD, inst_idx, mmUVD_LMI_RBC_RB_64BIT_BAR_LOW,
		lower_32_bits(ring->gpu_addr));
	WREG32_SOC15(UVD, inst_idx, mmUVD_LMI_RBC_RB_64BIT_BAR_HIGH,
		upper_32_bits(ring->gpu_addr));

	/* Initialize the ring buffer's read and write pointers */
	WREG32_SOC15(UVD, inst_idx, mmUVD_RBC_RB_RPTR, 0);

	WREG32_SOC15(UVD, inst_idx, mmUVD_SCRATCH2, 0);

	ring->wptr = RREG32_SOC15(UVD, inst_idx, mmUVD_RBC_RB_RPTR);
	WREG32_SOC15(UVD, inst_idx, mmUVD_RBC_RB_WPTR,
		lower_32_bits(ring->wptr));

	return 0;
}

static int vcn_v2_5_start(struct amdgpu_device *adev)
{
	struct amdgpu_ring *ring;
	uint32_t rb_bufsz, tmp;
	int i, j, k, r;

	if (adev->pm.dpm_enabled)
		amdgpu_dpm_enable_uvd(adev, true);

	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
		if (adev->vcn.harvest_config & (1 << i))
			continue;
		if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) {
			r = vcn_v2_5_start_dpg_mode(adev, i, adev->vcn.indirect_sram);
			continue;
		}

		/* disable register anti-hang mechanism */
		WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_POWER_STATUS), 0,
			~UVD_POWER_STATUS__UVD_POWER_STATUS_MASK);

		/* set uvd status busy */
		tmp = RREG32_SOC15(UVD, i, mmUVD_STATUS) | UVD_STATUS__UVD_BUSY;
		WREG32_SOC15(UVD, i, mmUVD_STATUS, tmp);
	}

	if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)
		return 0;

	/*SW clock gating */
	vcn_v2_5_disable_clock_gating(adev);

	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
		if (adev->vcn.harvest_config & (1 << i))
			continue;
		/* enable VCPU clock */
		WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_VCPU_CNTL),
			UVD_VCPU_CNTL__CLK_EN_MASK, ~UVD_VCPU_CNTL__CLK_EN_MASK);

		/* disable master interrupt */
		WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_MASTINT_EN), 0,
			~UVD_MASTINT_EN__VCPU_EN_MASK);

		/* setup mmUVD_LMI_CTRL */
		tmp = RREG32_SOC15(UVD, i, mmUVD_LMI_CTRL);
		tmp &= ~0xff;
		WREG32_SOC15(UVD, i, mmUVD_LMI_CTRL, tmp | 0x8|
			UVD_LMI_CTRL__WRITE_CLEAN_TIMER_EN_MASK	|
			UVD_LMI_CTRL__MASK_MC_URGENT_MASK |
			UVD_LMI_CTRL__DATA_COHERENCY_EN_MASK |
			UVD_LMI_CTRL__VCPU_DATA_COHERENCY_EN_MASK);

		/* setup mmUVD_MPC_CNTL */
		tmp = RREG32_SOC15(UVD, i, mmUVD_MPC_CNTL);
		tmp &= ~UVD_MPC_CNTL__REPLACEMENT_MODE_MASK;
		tmp |= 0x2 << UVD_MPC_CNTL__REPLACEMENT_MODE__SHIFT;
		WREG32_SOC15(VCN, i, mmUVD_MPC_CNTL, tmp);

		/* setup UVD_MPC_SET_MUXA0 */
		WREG32_SOC15(UVD, i, mmUVD_MPC_SET_MUXA0,
			((0x1 << UVD_MPC_SET_MUXA0__VARA_1__SHIFT) |
			(0x2 << UVD_MPC_SET_MUXA0__VARA_2__SHIFT) |
			(0x3 << UVD_MPC_SET_MUXA0__VARA_3__SHIFT) |
			(0x4 << UVD_MPC_SET_MUXA0__VARA_4__SHIFT)));

		/* setup UVD_MPC_SET_MUXB0 */
		WREG32_SOC15(UVD, i, mmUVD_MPC_SET_MUXB0,
			((0x1 << UVD_MPC_SET_MUXB0__VARB_1__SHIFT) |
			(0x2 << UVD_MPC_SET_MUXB0__VARB_2__SHIFT) |
			(0x3 << UVD_MPC_SET_MUXB0__VARB_3__SHIFT) |
			(0x4 << UVD_MPC_SET_MUXB0__VARB_4__SHIFT)));

		/* setup mmUVD_MPC_SET_MUX */
		WREG32_SOC15(UVD, i, mmUVD_MPC_SET_MUX,
			((0x0 << UVD_MPC_SET_MUX__SET_0__SHIFT) |
			(0x1 << UVD_MPC_SET_MUX__SET_1__SHIFT) |
			(0x2 << UVD_MPC_SET_MUX__SET_2__SHIFT)));
	}

	vcn_v2_5_mc_resume(adev);

	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
		if (adev->vcn.harvest_config & (1 << i))
			continue;
		/* VCN global tiling registers */
		WREG32_SOC15(UVD, i, mmUVD_GFX8_ADDR_CONFIG,
			adev->gfx.config.gb_addr_config);
		WREG32_SOC15(UVD, i, mmUVD_GFX8_ADDR_CONFIG,
			adev->gfx.config.gb_addr_config);

		/* enable LMI MC and UMC channels */
		WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_LMI_CTRL2), 0,
			~UVD_LMI_CTRL2__STALL_ARB_UMC_MASK);

		/* unblock VCPU register access */
		WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_RB_ARB_CTRL), 0,
			~UVD_RB_ARB_CTRL__VCPU_DIS_MASK);

		WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_VCPU_CNTL), 0,
			~UVD_VCPU_CNTL__BLK_RST_MASK);

		for (k = 0; k < 10; ++k) {
			uint32_t status;

			for (j = 0; j < 100; ++j) {
				status = RREG32_SOC15(UVD, i, mmUVD_STATUS);
				if (status & 2)
					break;
				if (amdgpu_emu_mode == 1)
					msleep(500);
				else
					mdelay(10);
			}
			r = 0;
			if (status & 2)
				break;

			DRM_ERROR("VCN decode not responding, trying to reset the VCPU!!!\n");
			WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_VCPU_CNTL),
				UVD_VCPU_CNTL__BLK_RST_MASK,
				~UVD_VCPU_CNTL__BLK_RST_MASK);
			mdelay(10);
			WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_VCPU_CNTL), 0,
				~UVD_VCPU_CNTL__BLK_RST_MASK);

			mdelay(10);
			r = -1;
		}

		if (r) {
			DRM_ERROR("VCN decode not responding, giving up!!!\n");
			return r;
		}

		/* enable master interrupt */
		WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_MASTINT_EN),
			UVD_MASTINT_EN__VCPU_EN_MASK,
			~UVD_MASTINT_EN__VCPU_EN_MASK);

		/* clear the busy bit of VCN_STATUS */
		WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_STATUS), 0,
			~(2 << UVD_STATUS__VCPU_REPORT__SHIFT));

		WREG32_SOC15(UVD, i, mmUVD_LMI_RBC_RB_VMID, 0);

		ring = &adev->vcn.inst[i].ring_dec;
		/* force RBC into idle state */
		rb_bufsz = order_base_2(ring->ring_size);
		tmp = REG_SET_FIELD(0, UVD_RBC_RB_CNTL, RB_BUFSZ, rb_bufsz);
		tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_BLKSZ, 1);
		tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_NO_FETCH, 1);
		tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_NO_UPDATE, 1);
		tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_RPTR_WR_EN, 1);
		WREG32_SOC15(UVD, i, mmUVD_RBC_RB_CNTL, tmp);

		/* programm the RB_BASE for ring buffer */
		WREG32_SOC15(UVD, i, mmUVD_LMI_RBC_RB_64BIT_BAR_LOW,
			lower_32_bits(ring->gpu_addr));
		WREG32_SOC15(UVD, i, mmUVD_LMI_RBC_RB_64BIT_BAR_HIGH,
			upper_32_bits(ring->gpu_addr));

		/* Initialize the ring buffer's read and write pointers */
		WREG32_SOC15(UVD, i, mmUVD_RBC_RB_RPTR, 0);

		ring->wptr = RREG32_SOC15(UVD, i, mmUVD_RBC_RB_RPTR);
		WREG32_SOC15(UVD, i, mmUVD_RBC_RB_WPTR,
				lower_32_bits(ring->wptr));
		ring = &adev->vcn.inst[i].ring_enc[0];
		WREG32_SOC15(UVD, i, mmUVD_RB_RPTR, lower_32_bits(ring->wptr));
		WREG32_SOC15(UVD, i, mmUVD_RB_WPTR, lower_32_bits(ring->wptr));
		WREG32_SOC15(UVD, i, mmUVD_RB_BASE_LO, ring->gpu_addr);
		WREG32_SOC15(UVD, i, mmUVD_RB_BASE_HI, upper_32_bits(ring->gpu_addr));
		WREG32_SOC15(UVD, i, mmUVD_RB_SIZE, ring->ring_size / 4);

		ring = &adev->vcn.inst[i].ring_enc[1];
		WREG32_SOC15(UVD, i, mmUVD_RB_RPTR2, lower_32_bits(ring->wptr));
		WREG32_SOC15(UVD, i, mmUVD_RB_WPTR2, lower_32_bits(ring->wptr));
		WREG32_SOC15(UVD, i, mmUVD_RB_BASE_LO2, ring->gpu_addr);
		WREG32_SOC15(UVD, i, mmUVD_RB_BASE_HI2, upper_32_bits(ring->gpu_addr));
		WREG32_SOC15(UVD, i, mmUVD_RB_SIZE2, ring->ring_size / 4);
	}

	return 0;
}

static int vcn_v2_5_mmsch_start(struct amdgpu_device *adev,
				struct amdgpu_mm_table *table)
{
	uint32_t data = 0, loop = 0, size = 0;
	uint64_t addr = table->gpu_addr;
	struct mmsch_v1_1_init_header *header = NULL;;

	header = (struct mmsch_v1_1_init_header *)table->cpu_addr;
	size = header->total_size;

	/*
	 * 1, write to vce_mmsch_vf_ctx_addr_lo/hi register with GPU mc addr of
	 *  memory descriptor location
	 */
	WREG32_SOC15(UVD, 0, mmMMSCH_VF_CTX_ADDR_LO, lower_32_bits(addr));
	WREG32_SOC15(UVD, 0, mmMMSCH_VF_CTX_ADDR_HI, upper_32_bits(addr));

	/* 2, update vmid of descriptor */
	data = RREG32_SOC15(UVD, 0, mmMMSCH_VF_VMID);
	data &= ~MMSCH_VF_VMID__VF_CTX_VMID_MASK;
	/* use domain0 for MM scheduler */
	data |= (0 << MMSCH_VF_VMID__VF_CTX_VMID__SHIFT);
	WREG32_SOC15(UVD, 0, mmMMSCH_VF_VMID, data);

	/* 3, notify mmsch about the size of this descriptor */
	WREG32_SOC15(UVD, 0, mmMMSCH_VF_CTX_SIZE, size);

	/* 4, set resp to zero */
	WREG32_SOC15(UVD, 0, mmMMSCH_VF_MAILBOX_RESP, 0);

	/*
	 * 5, kick off the initialization and wait until
	 * VCE_MMSCH_VF_MAILBOX_RESP becomes non-zero
	 */
	WREG32_SOC15(UVD, 0, mmMMSCH_VF_MAILBOX_HOST, 0x10000001);

	data = RREG32_SOC15(UVD, 0, mmMMSCH_VF_MAILBOX_RESP);
	loop = 10;
	while ((data & 0x10000002) != 0x10000002) {
		udelay(100);
		data = RREG32_SOC15(UVD, 0, mmMMSCH_VF_MAILBOX_RESP);
		loop--;
		if (!loop)
			break;
	}

	if (!loop) {
		dev_err(adev->dev,
			"failed to init MMSCH, mmMMSCH_VF_MAILBOX_RESP = %x\n",
			data);
		return -EBUSY;
	}

	return 0;
}

static int vcn_v2_5_sriov_start(struct amdgpu_device *adev)
{
	struct amdgpu_ring *ring;
	uint32_t offset, size, tmp, i, rb_bufsz;
	uint32_t table_size = 0;
	struct mmsch_v1_0_cmd_direct_write direct_wt = { { 0 } };
	struct mmsch_v1_0_cmd_direct_read_modify_write direct_rd_mod_wt = { { 0 } };
	struct mmsch_v1_0_cmd_direct_polling direct_poll = { { 0 } };
	struct mmsch_v1_0_cmd_end end = { { 0 } };
	uint32_t *init_table = adev->virt.mm_table.cpu_addr;
	struct mmsch_v1_1_init_header *header = (struct mmsch_v1_1_init_header *)init_table;

	direct_wt.cmd_header.command_type = MMSCH_COMMAND__DIRECT_REG_WRITE;
	direct_rd_mod_wt.cmd_header.command_type = MMSCH_COMMAND__DIRECT_REG_READ_MODIFY_WRITE;
	direct_poll.cmd_header.command_type = MMSCH_COMMAND__DIRECT_REG_POLLING;
	end.cmd_header.command_type = MMSCH_COMMAND__END;

	header->version = MMSCH_VERSION;
	header->total_size = sizeof(struct mmsch_v1_1_init_header) >> 2;
	init_table += header->total_size;

	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
		header->eng[i].table_offset = header->total_size;
		header->eng[i].init_status = 0;
		header->eng[i].table_size = 0;

		table_size = 0;

		MMSCH_V1_0_INSERT_DIRECT_RD_MOD_WT(
			SOC15_REG_OFFSET(UVD, i, mmUVD_STATUS),
			~UVD_STATUS__UVD_BUSY, UVD_STATUS__UVD_BUSY);

		size = AMDGPU_GPU_PAGE_ALIGN(adev->vcn.fw->size + 4);
		/* mc resume*/
		if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
			MMSCH_V1_0_INSERT_DIRECT_WT(
				SOC15_REG_OFFSET(UVD, i,
					mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW),
				adev->firmware.ucode[AMDGPU_UCODE_ID_VCN + i].tmr_mc_addr_lo);
			MMSCH_V1_0_INSERT_DIRECT_WT(
				SOC15_REG_OFFSET(UVD, i,
					mmUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH),
				adev->firmware.ucode[AMDGPU_UCODE_ID_VCN + i].tmr_mc_addr_hi);
			offset = 0;
			MMSCH_V1_0_INSERT_DIRECT_WT(
				SOC15_REG_OFFSET(UVD, i, mmUVD_VCPU_CACHE_OFFSET0), 0);
		} else {
			MMSCH_V1_0_INSERT_DIRECT_WT(
				SOC15_REG_OFFSET(UVD, i,
					mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW),
				lower_32_bits(adev->vcn.inst[i].gpu_addr));
			MMSCH_V1_0_INSERT_DIRECT_WT(
				SOC15_REG_OFFSET(UVD, i,
					mmUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH),
				upper_32_bits(adev->vcn.inst[i].gpu_addr));
			offset = size;
			MMSCH_V1_0_INSERT_DIRECT_WT(
				SOC15_REG_OFFSET(UVD, i, mmUVD_VCPU_CACHE_OFFSET0),
				AMDGPU_UVD_FIRMWARE_OFFSET >> 3);
		}

		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i, mmUVD_VCPU_CACHE_SIZE0),
			size);
		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i,
				mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_LOW),
			lower_32_bits(adev->vcn.inst[i].gpu_addr + offset));
		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i,
				mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_HIGH),
			upper_32_bits(adev->vcn.inst[i].gpu_addr + offset));
		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i, mmUVD_VCPU_CACHE_OFFSET1),
			0);
		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i, mmUVD_VCPU_CACHE_SIZE1),
			AMDGPU_VCN_STACK_SIZE);
		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i,
				mmUVD_LMI_VCPU_CACHE2_64BIT_BAR_LOW),
			lower_32_bits(adev->vcn.inst[i].gpu_addr + offset +
				AMDGPU_VCN_STACK_SIZE));
		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i,
				mmUVD_LMI_VCPU_CACHE2_64BIT_BAR_HIGH),
			upper_32_bits(adev->vcn.inst[i].gpu_addr + offset +
				AMDGPU_VCN_STACK_SIZE));
		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i, mmUVD_VCPU_CACHE_OFFSET2),
			0);
		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i, mmUVD_VCPU_CACHE_SIZE2),
			AMDGPU_VCN_CONTEXT_SIZE);

		ring = &adev->vcn.inst[i].ring_enc[0];
		ring->wptr = 0;

		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i, mmUVD_RB_BASE_LO),
			lower_32_bits(ring->gpu_addr));
		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i, mmUVD_RB_BASE_HI),
			upper_32_bits(ring->gpu_addr));
		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i, mmUVD_RB_SIZE),
			ring->ring_size / 4);

		ring = &adev->vcn.inst[i].ring_dec;
		ring->wptr = 0;
		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i,
				mmUVD_LMI_RBC_RB_64BIT_BAR_LOW),
			lower_32_bits(ring->gpu_addr));
		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i,
				mmUVD_LMI_RBC_RB_64BIT_BAR_HIGH),
			upper_32_bits(ring->gpu_addr));

		/* force RBC into idle state */
		rb_bufsz = order_base_2(ring->ring_size);
		tmp = REG_SET_FIELD(0, UVD_RBC_RB_CNTL, RB_BUFSZ, rb_bufsz);
		tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_BLKSZ, 1);
		tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_NO_FETCH, 1);
		tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_NO_UPDATE, 1);
		tmp = REG_SET_FIELD(tmp, UVD_RBC_RB_CNTL, RB_RPTR_WR_EN, 1);
		MMSCH_V1_0_INSERT_DIRECT_WT(
			SOC15_REG_OFFSET(UVD, i, mmUVD_RBC_RB_CNTL), tmp);

		/* add end packet */
		memcpy((void *)init_table, &end, sizeof(struct mmsch_v1_0_cmd_end));
		table_size += sizeof(struct mmsch_v1_0_cmd_end) / 4;
		init_table += sizeof(struct mmsch_v1_0_cmd_end) / 4;

		/* refine header */
		header->eng[i].table_size = table_size;
		header->total_size += table_size;
	}

	return vcn_v2_5_mmsch_start(adev, &adev->virt.mm_table);
}

static int vcn_v2_5_stop_dpg_mode(struct amdgpu_device *adev, int inst_idx)
{
	int ret_code = 0;
	uint32_t tmp;

	/* Wait for power status to be 1 */
	SOC15_WAIT_ON_RREG(UVD, inst_idx, mmUVD_POWER_STATUS, 1,
		UVD_POWER_STATUS__UVD_POWER_STATUS_MASK, ret_code);

	/* wait for read ptr to be equal to write ptr */
	tmp = RREG32_SOC15(UVD, inst_idx, mmUVD_RB_WPTR);
	SOC15_WAIT_ON_RREG(UVD, inst_idx, mmUVD_RB_RPTR, tmp, 0xFFFFFFFF, ret_code);

	tmp = RREG32_SOC15(UVD, inst_idx, mmUVD_RB_WPTR2);
	SOC15_WAIT_ON_RREG(UVD, inst_idx, mmUVD_RB_RPTR2, tmp, 0xFFFFFFFF, ret_code);

	tmp = RREG32_SOC15(UVD, inst_idx, mmUVD_RBC_RB_WPTR) & 0x7FFFFFFF;
	SOC15_WAIT_ON_RREG(UVD, inst_idx, mmUVD_RBC_RB_RPTR, tmp, 0xFFFFFFFF, ret_code);

	SOC15_WAIT_ON_RREG(UVD, inst_idx, mmUVD_POWER_STATUS, 1,
		UVD_POWER_STATUS__UVD_POWER_STATUS_MASK, ret_code);

	/* disable dynamic power gating mode */
	WREG32_P(SOC15_REG_OFFSET(UVD, inst_idx, mmUVD_POWER_STATUS), 0,
			~UVD_POWER_STATUS__UVD_PG_MODE_MASK);

	return 0;
}

static int vcn_v2_5_stop(struct amdgpu_device *adev)
{
	uint32_t tmp;
	int i, r = 0;

	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
		if (adev->vcn.harvest_config & (1 << i))
			continue;
		if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) {
			r = vcn_v2_5_stop_dpg_mode(adev, i);
			continue;
		}

		/* wait for vcn idle */
		SOC15_WAIT_ON_RREG(VCN, i, mmUVD_STATUS, UVD_STATUS__IDLE, 0x7, r);
		if (r)
			return r;

		tmp = UVD_LMI_STATUS__VCPU_LMI_WRITE_CLEAN_MASK |
			UVD_LMI_STATUS__READ_CLEAN_MASK |
			UVD_LMI_STATUS__WRITE_CLEAN_MASK |
			UVD_LMI_STATUS__WRITE_CLEAN_RAW_MASK;
		SOC15_WAIT_ON_RREG(VCN, i, mmUVD_LMI_STATUS, tmp, tmp, r);
		if (r)
			return r;

		/* block LMI UMC channel */
		tmp = RREG32_SOC15(VCN, i, mmUVD_LMI_CTRL2);
		tmp |= UVD_LMI_CTRL2__STALL_ARB_UMC_MASK;
		WREG32_SOC15(VCN, i, mmUVD_LMI_CTRL2, tmp);

		tmp = UVD_LMI_STATUS__UMC_READ_CLEAN_RAW_MASK|
			UVD_LMI_STATUS__UMC_WRITE_CLEAN_RAW_MASK;
		SOC15_WAIT_ON_RREG(VCN, i, mmUVD_LMI_STATUS, tmp, tmp, r);
		if (r)
			return r;

		/* block VCPU register access */
		WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_RB_ARB_CTRL),
			UVD_RB_ARB_CTRL__VCPU_DIS_MASK,
			~UVD_RB_ARB_CTRL__VCPU_DIS_MASK);

		/* reset VCPU */
		WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_VCPU_CNTL),
			UVD_VCPU_CNTL__BLK_RST_MASK,
			~UVD_VCPU_CNTL__BLK_RST_MASK);

		/* disable VCPU clock */
		WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_VCPU_CNTL), 0,
			~(UVD_VCPU_CNTL__CLK_EN_MASK));

		/* clear status */
		WREG32_SOC15(VCN, i, mmUVD_STATUS, 0);

		vcn_v2_5_enable_clock_gating(adev);

		/* enable register anti-hang mechanism */
		WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_POWER_STATUS),
			UVD_POWER_STATUS__UVD_POWER_STATUS_MASK,
			~UVD_POWER_STATUS__UVD_POWER_STATUS_MASK);
	}

	if (adev->pm.dpm_enabled)
		amdgpu_dpm_enable_uvd(adev, false);

	return 0;
}

static int vcn_v2_5_pause_dpg_mode(struct amdgpu_device *adev,
				int inst_idx, struct dpg_pause_state *new_state)
{
	struct amdgpu_ring *ring;
	uint32_t reg_data = 0;
	int ret_code;

	/* pause/unpause if state is changed */
	if (adev->vcn.inst[inst_idx].pause_state.fw_based != new_state->fw_based) {
		DRM_DEBUG("dpg pause state changed %d -> %d",
			adev->vcn.inst[inst_idx].pause_state.fw_based,	new_state->fw_based);
		reg_data = RREG32_SOC15(UVD, inst_idx, mmUVD_DPG_PAUSE) &
			(~UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK);

		if (new_state->fw_based == VCN_DPG_STATE__PAUSE) {
			ret_code = 0;
			SOC15_WAIT_ON_RREG(UVD, inst_idx, mmUVD_POWER_STATUS, 0x1,
				UVD_POWER_STATUS__UVD_POWER_STATUS_MASK, ret_code);

			if (!ret_code) {
				/* pause DPG */
				reg_data |= UVD_DPG_PAUSE__NJ_PAUSE_DPG_REQ_MASK;
				WREG32_SOC15(UVD, inst_idx, mmUVD_DPG_PAUSE, reg_data);

				/* wait for ACK */
				SOC15_WAIT_ON_RREG(UVD, inst_idx, mmUVD_DPG_PAUSE,
					   UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK,
					   UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK, ret_code);

				/* Restore */
				ring = &adev->vcn.inst[inst_idx].ring_enc[0];
				WREG32_SOC15(UVD, inst_idx, mmUVD_RB_BASE_LO, ring->gpu_addr);
				WREG32_SOC15(UVD, inst_idx, mmUVD_RB_BASE_HI, upper_32_bits(ring->gpu_addr));
				WREG32_SOC15(UVD, inst_idx, mmUVD_RB_SIZE, ring->ring_size / 4);
				WREG32_SOC15(UVD, inst_idx, mmUVD_RB_RPTR, lower_32_bits(ring->wptr));
				WREG32_SOC15(UVD, inst_idx, mmUVD_RB_WPTR, lower_32_bits(ring->wptr));

				ring = &adev->vcn.inst[inst_idx].ring_enc[1];
				WREG32_SOC15(UVD, inst_idx, mmUVD_RB_BASE_LO2, ring->gpu_addr);
				WREG32_SOC15(UVD, inst_idx, mmUVD_RB_BASE_HI2, upper_32_bits(ring->gpu_addr));
				WREG32_SOC15(UVD, inst_idx, mmUVD_RB_SIZE2, ring->ring_size / 4);
				WREG32_SOC15(UVD, inst_idx, mmUVD_RB_RPTR2, lower_32_bits(ring->wptr));
				WREG32_SOC15(UVD, inst_idx, mmUVD_RB_WPTR2, lower_32_bits(ring->wptr));

				WREG32_SOC15(UVD, inst_idx, mmUVD_RBC_RB_WPTR,
					   RREG32_SOC15(UVD, inst_idx, mmUVD_SCRATCH2) & 0x7FFFFFFF);

				SOC15_WAIT_ON_RREG(UVD, inst_idx, mmUVD_POWER_STATUS,
					   UVD_PGFSM_CONFIG__UVDM_UVDU_PWR_ON, UVD_POWER_STATUS__UVD_POWER_STATUS_MASK, ret_code);
			}
		} else {
			/* unpause dpg, no need to wait */
			reg_data &= ~UVD_DPG_PAUSE__NJ_PAUSE_DPG_REQ_MASK;
			WREG32_SOC15(UVD, inst_idx, mmUVD_DPG_PAUSE, reg_data);
		}
		adev->vcn.inst[inst_idx].pause_state.fw_based = new_state->fw_based;
	}

	return 0;
}

/**
 * vcn_v2_5_dec_ring_get_rptr - get read pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Returns the current hardware read pointer
 */
static uint64_t vcn_v2_5_dec_ring_get_rptr(struct amdgpu_ring *ring)
{
	struct amdgpu_device *adev = ring->adev;

	return RREG32_SOC15(UVD, ring->me, mmUVD_RBC_RB_RPTR);
}

/**
 * vcn_v2_5_dec_ring_get_wptr - get write pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Returns the current hardware write pointer
 */
static uint64_t vcn_v2_5_dec_ring_get_wptr(struct amdgpu_ring *ring)
{
	struct amdgpu_device *adev = ring->adev;

	if (ring->use_doorbell)
		return adev->wb.wb[ring->wptr_offs];
	else
		return RREG32_SOC15(UVD, ring->me, mmUVD_RBC_RB_WPTR);
}

/**
 * vcn_v2_5_dec_ring_set_wptr - set write pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Commits the write pointer to the hardware
 */
static void vcn_v2_5_dec_ring_set_wptr(struct amdgpu_ring *ring)
{
	struct amdgpu_device *adev = ring->adev;

	if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)
		WREG32_SOC15(UVD, ring->me, mmUVD_SCRATCH2,
			lower_32_bits(ring->wptr) | 0x80000000);

	if (ring->use_doorbell) {
		adev->wb.wb[ring->wptr_offs] = lower_32_bits(ring->wptr);
		WDOORBELL32(ring->doorbell_index, lower_32_bits(ring->wptr));
	} else {
		WREG32_SOC15(UVD, ring->me, mmUVD_RBC_RB_WPTR, lower_32_bits(ring->wptr));
	}
}

static const struct amdgpu_ring_funcs vcn_v2_5_dec_ring_vm_funcs = {
	.type = AMDGPU_RING_TYPE_VCN_DEC,
	.align_mask = 0xf,
	.vmhub = AMDGPU_MMHUB_1,
	.get_rptr = vcn_v2_5_dec_ring_get_rptr,
	.get_wptr = vcn_v2_5_dec_ring_get_wptr,
	.set_wptr = vcn_v2_5_dec_ring_set_wptr,
	.emit_frame_size =
		SOC15_FLUSH_GPU_TLB_NUM_WREG * 6 +
		SOC15_FLUSH_GPU_TLB_NUM_REG_WAIT * 8 +
		8 + /* vcn_v2_0_dec_ring_emit_vm_flush */
		14 + 14 + /* vcn_v2_0_dec_ring_emit_fence x2 vm fence */
		6,
	.emit_ib_size = 8, /* vcn_v2_0_dec_ring_emit_ib */
	.emit_ib = vcn_v2_0_dec_ring_emit_ib,
	.emit_fence = vcn_v2_0_dec_ring_emit_fence,
	.emit_vm_flush = vcn_v2_0_dec_ring_emit_vm_flush,
	.test_ring = vcn_v2_0_dec_ring_test_ring,
	.test_ib = amdgpu_vcn_dec_ring_test_ib,
	.insert_nop = vcn_v2_0_dec_ring_insert_nop,
	.insert_start = vcn_v2_0_dec_ring_insert_start,
	.insert_end = vcn_v2_0_dec_ring_insert_end,
	.pad_ib = amdgpu_ring_generic_pad_ib,
	.begin_use = amdgpu_vcn_ring_begin_use,
	.end_use = amdgpu_vcn_ring_end_use,
	.emit_wreg = vcn_v2_0_dec_ring_emit_wreg,
	.emit_reg_wait = vcn_v2_0_dec_ring_emit_reg_wait,
	.emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper,
};

/**
 * vcn_v2_5_enc_ring_get_rptr - get enc read pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Returns the current hardware enc read pointer
 */
static uint64_t vcn_v2_5_enc_ring_get_rptr(struct amdgpu_ring *ring)
{
	struct amdgpu_device *adev = ring->adev;

	if (ring == &adev->vcn.inst[ring->me].ring_enc[0])
		return RREG32_SOC15(UVD, ring->me, mmUVD_RB_RPTR);
	else
		return RREG32_SOC15(UVD, ring->me, mmUVD_RB_RPTR2);
}

/**
 * vcn_v2_5_enc_ring_get_wptr - get enc write pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Returns the current hardware enc write pointer
 */
static uint64_t vcn_v2_5_enc_ring_get_wptr(struct amdgpu_ring *ring)
{
	struct amdgpu_device *adev = ring->adev;

	if (ring == &adev->vcn.inst[ring->me].ring_enc[0]) {
		if (ring->use_doorbell)
			return adev->wb.wb[ring->wptr_offs];
		else
			return RREG32_SOC15(UVD, ring->me, mmUVD_RB_WPTR);
	} else {
		if (ring->use_doorbell)
			return adev->wb.wb[ring->wptr_offs];
		else
			return RREG32_SOC15(UVD, ring->me, mmUVD_RB_WPTR2);
	}
}

/**
 * vcn_v2_5_enc_ring_set_wptr - set enc write pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Commits the enc write pointer to the hardware
 */
static void vcn_v2_5_enc_ring_set_wptr(struct amdgpu_ring *ring)
{
	struct amdgpu_device *adev = ring->adev;

	if (ring == &adev->vcn.inst[ring->me].ring_enc[0]) {
		if (ring->use_doorbell) {
			adev->wb.wb[ring->wptr_offs] = lower_32_bits(ring->wptr);
			WDOORBELL32(ring->doorbell_index, lower_32_bits(ring->wptr));
		} else {
			WREG32_SOC15(UVD, ring->me, mmUVD_RB_WPTR, lower_32_bits(ring->wptr));
		}
	} else {
		if (ring->use_doorbell) {
			adev->wb.wb[ring->wptr_offs] = lower_32_bits(ring->wptr);
			WDOORBELL32(ring->doorbell_index, lower_32_bits(ring->wptr));
		} else {
			WREG32_SOC15(UVD, ring->me, mmUVD_RB_WPTR2, lower_32_bits(ring->wptr));
		}
	}
}

static const struct amdgpu_ring_funcs vcn_v2_5_enc_ring_vm_funcs = {
	.type = AMDGPU_RING_TYPE_VCN_ENC,
	.align_mask = 0x3f,
	.nop = VCN_ENC_CMD_NO_OP,
	.vmhub = AMDGPU_MMHUB_1,
	.get_rptr = vcn_v2_5_enc_ring_get_rptr,
	.get_wptr = vcn_v2_5_enc_ring_get_wptr,
	.set_wptr = vcn_v2_5_enc_ring_set_wptr,
	.emit_frame_size =
		SOC15_FLUSH_GPU_TLB_NUM_WREG * 3 +
		SOC15_FLUSH_GPU_TLB_NUM_REG_WAIT * 4 +
		4 + /* vcn_v2_0_enc_ring_emit_vm_flush */
		5 + 5 + /* vcn_v2_0_enc_ring_emit_fence x2 vm fence */
		1, /* vcn_v2_0_enc_ring_insert_end */
	.emit_ib_size = 5, /* vcn_v2_0_enc_ring_emit_ib */
	.emit_ib = vcn_v2_0_enc_ring_emit_ib,
	.emit_fence = vcn_v2_0_enc_ring_emit_fence,
	.emit_vm_flush = vcn_v2_0_enc_ring_emit_vm_flush,
	.test_ring = amdgpu_vcn_enc_ring_test_ring,
	.test_ib = amdgpu_vcn_enc_ring_test_ib,
	.insert_nop = amdgpu_ring_insert_nop,
	.insert_end = vcn_v2_0_enc_ring_insert_end,
	.pad_ib = amdgpu_ring_generic_pad_ib,
	.begin_use = amdgpu_vcn_ring_begin_use,
	.end_use = amdgpu_vcn_ring_end_use,
	.emit_wreg = vcn_v2_0_enc_ring_emit_wreg,
	.emit_reg_wait = vcn_v2_0_enc_ring_emit_reg_wait,
	.emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper,
};

static void vcn_v2_5_set_dec_ring_funcs(struct amdgpu_device *adev)
{
	int i;

	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
		if (adev->vcn.harvest_config & (1 << i))
			continue;
		adev->vcn.inst[i].ring_dec.funcs = &vcn_v2_5_dec_ring_vm_funcs;
		adev->vcn.inst[i].ring_dec.me = i;
		DRM_INFO("VCN(%d) decode is enabled in VM mode\n", i);
	}
}

static void vcn_v2_5_set_enc_ring_funcs(struct amdgpu_device *adev)
{
	int i, j;

	for (j = 0; j < adev->vcn.num_vcn_inst; ++j) {
		if (adev->vcn.harvest_config & (1 << j))
			continue;
		for (i = 0; i < adev->vcn.num_enc_rings; ++i) {
			adev->vcn.inst[j].ring_enc[i].funcs = &vcn_v2_5_enc_ring_vm_funcs;
			adev->vcn.inst[j].ring_enc[i].me = j;
		}
		DRM_INFO("VCN(%d) encode is enabled in VM mode\n", j);
	}
}

static bool vcn_v2_5_is_idle(void *handle)
{
	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
	int i, ret = 1;

	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
		if (adev->vcn.harvest_config & (1 << i))
			continue;
		ret &= (RREG32_SOC15(VCN, i, mmUVD_STATUS) == UVD_STATUS__IDLE);
	}

	return ret;
}

static int vcn_v2_5_wait_for_idle(void *handle)
{
	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
	int i, ret = 0;

	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
		if (adev->vcn.harvest_config & (1 << i))
			continue;
		SOC15_WAIT_ON_RREG(VCN, i, mmUVD_STATUS, UVD_STATUS__IDLE,
			UVD_STATUS__IDLE, ret);
		if (ret)
			return ret;
	}

	return ret;
}

static int vcn_v2_5_set_clockgating_state(void *handle,
					  enum amd_clockgating_state state)
{
	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
	bool enable = (state == AMD_CG_STATE_GATE);

	if (amdgpu_sriov_vf(adev))
		return 0;

	if (enable) {
		if (!vcn_v2_5_is_idle(handle))
			return -EBUSY;
		vcn_v2_5_enable_clock_gating(adev);
	} else {
		vcn_v2_5_disable_clock_gating(adev);
	}

	return 0;
}

static int vcn_v2_5_set_powergating_state(void *handle,
					  enum amd_powergating_state state)
{
	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
	int ret;

	if (amdgpu_sriov_vf(adev))
		return 0;

	if(state == adev->vcn.cur_state)
		return 0;

	if (state == AMD_PG_STATE_GATE)
		ret = vcn_v2_5_stop(adev);
	else
		ret = vcn_v2_5_start(adev);

	if(!ret)
		adev->vcn.cur_state = state;

	return ret;
}

static int vcn_v2_5_set_interrupt_state(struct amdgpu_device *adev,
					struct amdgpu_irq_src *source,
					unsigned type,
					enum amdgpu_interrupt_state state)
{
	return 0;
}

static int vcn_v2_5_process_interrupt(struct amdgpu_device *adev,
				      struct amdgpu_irq_src *source,
				      struct amdgpu_iv_entry *entry)
{
	uint32_t ip_instance;

	switch (entry->client_id) {
	case SOC15_IH_CLIENTID_VCN:
		ip_instance = 0;
		break;
	case SOC15_IH_CLIENTID_VCN1:
		ip_instance = 1;
		break;
	default:
		DRM_ERROR("Unhandled client id: %d\n", entry->client_id);
		return 0;
	}

	DRM_DEBUG("IH: VCN TRAP\n");

	switch (entry->src_id) {
	case VCN_2_0__SRCID__UVD_SYSTEM_MESSAGE_INTERRUPT:
		amdgpu_fence_process(&adev->vcn.inst[ip_instance].ring_dec);
		break;
	case VCN_2_0__SRCID__UVD_ENC_GENERAL_PURPOSE:
		amdgpu_fence_process(&adev->vcn.inst[ip_instance].ring_enc[0]);
		break;
	case VCN_2_0__SRCID__UVD_ENC_LOW_LATENCY:
		amdgpu_fence_process(&adev->vcn.inst[ip_instance].ring_enc[1]);
		break;
	default:
		DRM_ERROR("Unhandled interrupt: %d %d\n",
			  entry->src_id, entry->src_data[0]);
		break;
	}

	return 0;
}

static const struct amdgpu_irq_src_funcs vcn_v2_5_irq_funcs = {
	.set = vcn_v2_5_set_interrupt_state,
	.process = vcn_v2_5_process_interrupt,
};

static void vcn_v2_5_set_irq_funcs(struct amdgpu_device *adev)
{
	int i;

	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
		if (adev->vcn.harvest_config & (1 << i))
			continue;
		adev->vcn.inst[i].irq.num_types = adev->vcn.num_enc_rings + 1;
		adev->vcn.inst[i].irq.funcs = &vcn_v2_5_irq_funcs;
	}
}

static const struct amd_ip_funcs vcn_v2_5_ip_funcs = {
	.name = "vcn_v2_5",
	.early_init = vcn_v2_5_early_init,
	.late_init = NULL,
	.sw_init = vcn_v2_5_sw_init,
	.sw_fini = vcn_v2_5_sw_fini,
	.hw_init = vcn_v2_5_hw_init,
	.hw_fini = vcn_v2_5_hw_fini,
	.suspend = vcn_v2_5_suspend,
	.resume = vcn_v2_5_resume,
	.is_idle = vcn_v2_5_is_idle,
	.wait_for_idle = vcn_v2_5_wait_for_idle,
	.check_soft_reset = NULL,
	.pre_soft_reset = NULL,
	.soft_reset = NULL,
	.post_soft_reset = NULL,
	.set_clockgating_state = vcn_v2_5_set_clockgating_state,
	.set_powergating_state = vcn_v2_5_set_powergating_state,
};

const struct amdgpu_ip_block_version vcn_v2_5_ip_block =
{
		.type = AMD_IP_BLOCK_TYPE_VCN,
		.major = 2,
		.minor = 5,
		.rev = 0,
		.funcs = &vcn_v2_5_ip_funcs,
};