/*
 * Copyright 2025-2026 Advanced Micro Devices, Inc. All rights reserved.
 *
 * 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 "soc15_hw_ip.h"
#include "vcn_v2_0.h"
#include "vcn_v4_0_3.h"

#include "vcn/vcn_5_0_0_offset.h"
#include "vcn/vcn_5_0_0_sh_mask.h"
#include "ivsrcid/vcn/irqsrcs_vcn_5_0.h"
#include "vcn_v5_0_0.h"
#include "vcn_v5_0_1.h"
#include "vcn_v5_0_2.h"

#include <drm/drm_drv.h>

static void vcn_v5_0_2_set_unified_ring_funcs(struct amdgpu_device *adev);
static void vcn_v5_0_2_set_irq_funcs(struct amdgpu_device *adev);
static int vcn_v5_0_2_set_pg_state(struct amdgpu_vcn_inst *vinst,
                                   enum amd_powergating_state state);
static void vcn_v5_0_2_unified_ring_set_wptr(struct amdgpu_ring *ring);

/**
 * vcn_v5_0_2_early_init - set function pointers and load microcode
 *
 * @ip_block: Pointer to the amdgpu_ip_block for this hw instance.
 *
 * Set ring and irq function pointers
 * Load microcode from filesystem
 */
static int vcn_v5_0_2_early_init(struct amdgpu_ip_block *ip_block)
{
        struct amdgpu_device *adev = ip_block->adev;
        int i, r;

        for (i = 0; i < adev->vcn.num_vcn_inst; ++i)
                /* re-use enc ring as unified ring */
                adev->vcn.inst[i].num_enc_rings = 1;

        vcn_v5_0_2_set_unified_ring_funcs(adev);
        vcn_v5_0_2_set_irq_funcs(adev);

        for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
                adev->vcn.inst[i].set_pg_state = vcn_v5_0_2_set_pg_state;

                r = amdgpu_vcn_early_init(adev, i);
                if (r)
                        return r;
        }

        return 0;
}

static void vcn_v5_0_2_fw_shared_init(struct amdgpu_device *adev, int inst_idx)
{
        struct amdgpu_vcn5_fw_shared *fw_shared;

        fw_shared = adev->vcn.inst[inst_idx].fw_shared.cpu_addr;

        if (fw_shared->sq.is_enabled)
                return;
        fw_shared->present_flag_0 =
                cpu_to_le32(AMDGPU_FW_SHARED_FLAG_0_UNIFIED_QUEUE);
        fw_shared->sq.is_enabled = 1;

        if (amdgpu_vcnfw_log)
                amdgpu_vcn_fwlog_init(&adev->vcn.inst[inst_idx]);
}

/**
 * vcn_v5_0_2_sw_init - sw init for VCN block
 *
 * @ip_block: Pointer to the amdgpu_ip_block for this hw instance.
 *
 * Load firmware and sw initialization
 */
static int vcn_v5_0_2_sw_init(struct amdgpu_ip_block *ip_block)
{
        struct amdgpu_device *adev = ip_block->adev;
        struct amdgpu_ring *ring;
        int i, r, vcn_inst;

        /* VCN UNIFIED TRAP */
        r = amdgpu_irq_add_id(adev, SOC_V1_0_IH_CLIENTID_VCN,
                VCN_5_0__SRCID__UVD_ENC_GENERAL_PURPOSE, &adev->vcn.inst->irq);
        if (r)
                return r;

        for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
                vcn_inst = GET_INST(VCN, i);

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

                amdgpu_vcn_setup_ucode(adev, i);

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

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

                ring->doorbell_index =
                        (adev->doorbell_index.vcn.vcn_ring0_1 << 1) + 32 * vcn_inst;

                ring->vm_hub = AMDGPU_MMHUB0(adev->vcn.inst[i].aid_id);
                sprintf(ring->name, "vcn_unified_%d", adev->vcn.inst[i].aid_id);

                r = amdgpu_ring_init(adev, ring, 512, &adev->vcn.inst[i].irq, 0,
                                        AMDGPU_RING_PRIO_DEFAULT, &adev->vcn.inst[i].sched_score);
                if (r)
                        return r;

                vcn_v5_0_2_fw_shared_init(adev, i);
        }

        /* TODO: Add queue reset mask when FW fully supports it */
        adev->vcn.supported_reset =
                amdgpu_get_soft_full_reset_mask(&adev->vcn.inst[0].ring_enc[0]);

        return amdgpu_vcn_sysfs_reset_mask_init(adev);
}

/**
 * vcn_v5_0_2_sw_fini - sw fini for VCN block
 *
 * @ip_block: Pointer to the amdgpu_ip_block for this hw instance.
 *
 * VCN suspend and free up sw allocation
 */
static int vcn_v5_0_2_sw_fini(struct amdgpu_ip_block *ip_block)
{
        struct amdgpu_device *adev = ip_block->adev;
        int i, r, idx;

        if (drm_dev_enter(adev_to_drm(adev), &idx)) {
                for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
                        struct amdgpu_vcn5_fw_shared *fw_shared;

                        fw_shared = adev->vcn.inst[i].fw_shared.cpu_addr;
                        fw_shared->present_flag_0 = 0;
                        fw_shared->sq.is_enabled = 0;
                }

                drm_dev_exit(idx);
        }

        for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
                r = amdgpu_vcn_suspend(adev, i);
                if (r)
                        return r;
        }

        for (i = 0; i < adev->vcn.num_vcn_inst; i++)
                amdgpu_vcn_sw_fini(adev, i);

        amdgpu_vcn_sysfs_reset_mask_fini(adev);

        kfree(adev->vcn.ip_dump); //TODO check

        return 0;
}

/**
 * vcn_v5_0_2_hw_init - start and test VCN block
 *
 * @ip_block: Pointer to the amdgpu_ip_block for this hw instance.
 *
 * Initialize the hardware, boot up the VCPU and do some testing
 */
static int vcn_v5_0_2_hw_init(struct amdgpu_ip_block *ip_block)
{
        struct amdgpu_device *adev = ip_block->adev;
        struct amdgpu_ring *ring;
        int i, r, vcn_inst;
        uint32_t tmp;

        if (RREG32_SOC15(VCN, GET_INST(VCN, 0), regVCN_RRMT_CNTL) & 0x200)
                adev->vcn.caps |= AMDGPU_VCN_CAPS(RRMT_ENABLED);
        for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
                vcn_inst = GET_INST(VCN, i);
                ring = &adev->vcn.inst[i].ring_enc[0];

                /* Remove Video Tiles antihang mechanism */
                tmp = RREG32_SOC15(VCN, vcn_inst, regUVD_POWER_STATUS);
                tmp &= (~UVD_POWER_STATUS__UVD_POWER_STATUS_MASK);
                WREG32_SOC15(VCN, vcn_inst, regUVD_POWER_STATUS, tmp);

                if (ring->use_doorbell)
                        adev->nbio.funcs->vcn_doorbell_range(adev, ring->use_doorbell,
                                ((adev->doorbell_index.vcn.vcn_ring0_1 << 1) +
                                 11 * vcn_inst),
                                adev->vcn.inst[i].aid_id);

                /* Re-init fw_shared, if required */
                vcn_v5_0_2_fw_shared_init(adev, i);

                r = amdgpu_ring_test_helper(ring);
                if (r)
                        return r;
        }

        return 0;
}

/**
 * vcn_v5_0_2_hw_fini - stop the hardware block
 *
 * @ip_block: Pointer to the amdgpu_ip_block for this hw instance.
 *
 * Stop the VCN block, mark ring as not ready any more
 */
static int vcn_v5_0_2_hw_fini(struct amdgpu_ip_block *ip_block)
{
        struct amdgpu_device *adev = ip_block->adev;
        int i;

        for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
                struct amdgpu_vcn_inst *vinst = &adev->vcn.inst[i];

                cancel_delayed_work_sync(&adev->vcn.inst[i].idle_work);
                if (vinst->cur_state != AMD_PG_STATE_GATE)
                        vinst->set_pg_state(vinst, AMD_PG_STATE_GATE);
        }

        return 0;
}

/**
 * vcn_v5_0_2_suspend - suspend VCN block
 *
 * @ip_block: Pointer to the amdgpu_ip_block for this hw instance.
 *
 * HW fini and suspend VCN block
 */
static int vcn_v5_0_2_suspend(struct amdgpu_ip_block *ip_block)
{
        struct amdgpu_device *adev = ip_block->adev;
        int r, i;

        r = vcn_v5_0_2_hw_fini(ip_block);
        if (r)
                return r;

        for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
                r = amdgpu_vcn_suspend(ip_block->adev, i);
                if (r)
                        return r;
        }

        return r;
}

/**
 * vcn_v5_0_2_resume - resume VCN block
 *
 * @ip_block: Pointer to the amdgpu_ip_block for this hw instance.
 *
 * Resume firmware and hw init VCN block
 */
static int vcn_v5_0_2_resume(struct amdgpu_ip_block *ip_block)
{
        struct amdgpu_device *adev = ip_block->adev;
        int r, i;

        for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
                struct amdgpu_vcn_inst *vinst = &adev->vcn.inst[i];

                if (amdgpu_in_reset(adev))
                        vinst->cur_state = AMD_PG_STATE_GATE;

                r = amdgpu_vcn_resume(ip_block->adev, i);
                if (r)
                        return r;
        }

        r = vcn_v5_0_2_hw_init(ip_block);

        return r;
}

/**
 * vcn_v5_0_2_mc_resume - memory controller programming
 *
 * @vinst: VCN instance
 *
 * Let the VCN memory controller know it's offsets
 */
static void vcn_v5_0_2_mc_resume(struct amdgpu_vcn_inst *vinst)
{
        struct amdgpu_device *adev = vinst->adev;
        int inst = vinst->inst;
        uint32_t offset, size, vcn_inst;
        const struct common_firmware_header *hdr;

        hdr = (const struct common_firmware_header *)adev->vcn.inst[inst].fw->data;
        size = AMDGPU_GPU_PAGE_ALIGN(le32_to_cpu(hdr->ucode_size_bytes) + 8);

        vcn_inst = GET_INST(VCN, inst);
        /* cache window 0: fw */
        if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
                WREG32_SOC15(VCN, vcn_inst, regUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW,
                        (adev->firmware.ucode[AMDGPU_UCODE_ID_VCN + inst].tmr_mc_addr_lo));
                WREG32_SOC15(VCN, vcn_inst, regUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH,
                        (adev->firmware.ucode[AMDGPU_UCODE_ID_VCN + inst].tmr_mc_addr_hi));
                WREG32_SOC15(VCN, vcn_inst, regUVD_VCPU_CACHE_OFFSET0, 0);
                offset = 0;
        } else {
                WREG32_SOC15(VCN, vcn_inst, regUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW,
                        lower_32_bits(adev->vcn.inst[inst].gpu_addr));
                WREG32_SOC15(VCN, vcn_inst, regUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH,
                        upper_32_bits(adev->vcn.inst[inst].gpu_addr));
                offset = size;
                WREG32_SOC15(VCN, vcn_inst, regUVD_VCPU_CACHE_OFFSET0,
                                AMDGPU_UVD_FIRMWARE_OFFSET >> 3);
        }
        WREG32_SOC15(VCN, vcn_inst, regUVD_VCPU_CACHE_SIZE0, size);

        /* cache window 1: stack */
        WREG32_SOC15(VCN, vcn_inst, regUVD_LMI_VCPU_CACHE1_64BIT_BAR_LOW,
                lower_32_bits(adev->vcn.inst[inst].gpu_addr + offset));
        WREG32_SOC15(VCN, vcn_inst, regUVD_LMI_VCPU_CACHE1_64BIT_BAR_HIGH,
                upper_32_bits(adev->vcn.inst[inst].gpu_addr + offset));
        WREG32_SOC15(VCN, vcn_inst, regUVD_VCPU_CACHE_OFFSET1, 0);
        WREG32_SOC15(VCN, vcn_inst, regUVD_VCPU_CACHE_SIZE1, AMDGPU_VCN_STACK_SIZE);

        /* cache window 2: context */
        WREG32_SOC15(VCN, vcn_inst, regUVD_LMI_VCPU_CACHE2_64BIT_BAR_LOW,
                lower_32_bits(adev->vcn.inst[inst].gpu_addr + offset + AMDGPU_VCN_STACK_SIZE));
        WREG32_SOC15(VCN, vcn_inst, regUVD_LMI_VCPU_CACHE2_64BIT_BAR_HIGH,
                upper_32_bits(adev->vcn.inst[inst].gpu_addr + offset + AMDGPU_VCN_STACK_SIZE));
        WREG32_SOC15(VCN, vcn_inst, regUVD_VCPU_CACHE_OFFSET2, 0);
        WREG32_SOC15(VCN, vcn_inst, regUVD_VCPU_CACHE_SIZE2, AMDGPU_VCN_CONTEXT_SIZE);

        /* non-cache window */
        WREG32_SOC15(VCN, vcn_inst, regUVD_LMI_VCPU_NC0_64BIT_BAR_LOW,
                lower_32_bits(adev->vcn.inst[inst].fw_shared.gpu_addr));
        WREG32_SOC15(VCN, vcn_inst, regUVD_LMI_VCPU_NC0_64BIT_BAR_HIGH,
                upper_32_bits(adev->vcn.inst[inst].fw_shared.gpu_addr));
        WREG32_SOC15(VCN, vcn_inst, regUVD_VCPU_NONCACHE_OFFSET0, 0);
        WREG32_SOC15(VCN, vcn_inst, regUVD_VCPU_NONCACHE_SIZE0,
                AMDGPU_GPU_PAGE_ALIGN(sizeof(struct amdgpu_vcn5_fw_shared)));
}

/**
 * vcn_v5_0_2_mc_resume_dpg_mode - memory controller programming for dpg mode
 *
 * @vinst: VCN instance
 * @indirect: indirectly write sram
 *
 * Let the VCN memory controller know it's offsets with dpg mode
 */
static void vcn_v5_0_2_mc_resume_dpg_mode(struct amdgpu_vcn_inst *vinst,
                                          bool indirect)
{
        struct amdgpu_device *adev = vinst->adev;
        int inst_idx = vinst->inst;
        uint32_t offset, size;
        const struct common_firmware_header *hdr;

        hdr = (const struct common_firmware_header *)adev->vcn.inst[inst_idx].fw->data;
        size = AMDGPU_GPU_PAGE_ALIGN(le32_to_cpu(hdr->ucode_size_bytes) + 8);

        /* cache window 0: fw */
        if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
                if (!indirect) {
                        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                                VCN, 0, regUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW),
                                (adev->firmware.ucode[AMDGPU_UCODE_ID_VCN +
                                 inst_idx].tmr_mc_addr_lo), 0, indirect);
                        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                                VCN, 0, regUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH),
                                (adev->firmware.ucode[AMDGPU_UCODE_ID_VCN +
                                 inst_idx].tmr_mc_addr_hi), 0, indirect);
                        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                                VCN, 0, regUVD_VCPU_CACHE_OFFSET0), 0, 0, indirect);
                } else {
                        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                                VCN, 0, regUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW), 0, 0, indirect);
                        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                                VCN, 0, regUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH), 0, 0, indirect);
                        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                                VCN, 0, regUVD_VCPU_CACHE_OFFSET0), 0, 0, indirect);
                }
                offset = 0;
        } else {
                WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                        VCN, 0, regUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW),
                        lower_32_bits(adev->vcn.inst[inst_idx].gpu_addr), 0, indirect);
                WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                        VCN, 0, regUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH),
                        upper_32_bits(adev->vcn.inst[inst_idx].gpu_addr), 0, indirect);
                offset = size;
                WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                        VCN, 0, regUVD_VCPU_CACHE_OFFSET0),
                        AMDGPU_UVD_FIRMWARE_OFFSET >> 3, 0, indirect);
        }

        if (!indirect)
                WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                        VCN, 0, regUVD_VCPU_CACHE_SIZE0), size, 0, indirect);
        else
                WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                        VCN, 0, regUVD_VCPU_CACHE_SIZE0), 0, 0, indirect);

        /* cache window 1: stack */
        if (!indirect) {
                WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                        VCN, 0, regUVD_LMI_VCPU_CACHE1_64BIT_BAR_LOW),
                        lower_32_bits(adev->vcn.inst[inst_idx].gpu_addr + offset), 0, indirect);
                WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                        VCN, 0, regUVD_LMI_VCPU_CACHE1_64BIT_BAR_HIGH),
                        upper_32_bits(adev->vcn.inst[inst_idx].gpu_addr + offset), 0, indirect);
                WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                        VCN, 0, regUVD_VCPU_CACHE_OFFSET1), 0, 0, indirect);
        } else {
                WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                        VCN, 0, regUVD_LMI_VCPU_CACHE1_64BIT_BAR_LOW), 0, 0, indirect);
                WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                        VCN, 0, regUVD_LMI_VCPU_CACHE1_64BIT_BAR_HIGH), 0, 0, indirect);
                WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                        VCN, 0, regUVD_VCPU_CACHE_OFFSET1), 0, 0, indirect);
        }
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                        VCN, 0, regUVD_VCPU_CACHE_SIZE1), AMDGPU_VCN_STACK_SIZE, 0, indirect);

        /* cache window 2: context */
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_LMI_VCPU_CACHE2_64BIT_BAR_LOW),
                lower_32_bits(adev->vcn.inst[inst_idx].gpu_addr + offset +
                        AMDGPU_VCN_STACK_SIZE), 0, indirect);
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_LMI_VCPU_CACHE2_64BIT_BAR_HIGH),
                upper_32_bits(adev->vcn.inst[inst_idx].gpu_addr + offset +
                        AMDGPU_VCN_STACK_SIZE), 0, indirect);
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_VCPU_CACHE_OFFSET2), 0, 0, indirect);
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_VCPU_CACHE_SIZE2), AMDGPU_VCN_CONTEXT_SIZE, 0, indirect);

        /* non-cache window */
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_LMI_VCPU_NC0_64BIT_BAR_LOW),
                lower_32_bits(adev->vcn.inst[inst_idx].fw_shared.gpu_addr), 0, indirect);
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_LMI_VCPU_NC0_64BIT_BAR_HIGH),
                upper_32_bits(adev->vcn.inst[inst_idx].fw_shared.gpu_addr), 0, indirect);
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_VCPU_NONCACHE_OFFSET0), 0, 0, indirect);
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_VCPU_NONCACHE_SIZE0),
                AMDGPU_GPU_PAGE_ALIGN(sizeof(struct amdgpu_vcn5_fw_shared)), 0, indirect);

        /* VCN global tiling registers */
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_GFX10_ADDR_CONFIG), adev->gfx.config.gb_addr_config, 0, indirect);
}

/**
 * vcn_v5_0_2_disable_clock_gating - disable VCN clock gating
 *
 * @vinst: VCN instance
 *
 * Disable clock gating for VCN block
 */
static void vcn_v5_0_2_disable_clock_gating(struct amdgpu_vcn_inst *vinst)
{
}

/**
 * vcn_v5_0_2_enable_clock_gating - enable VCN clock gating
 *
 * @vinst: VCN instance
 *
 * Enable clock gating for VCN block
 */
static void vcn_v5_0_2_enable_clock_gating(struct amdgpu_vcn_inst *vinst)
{
}

/**
 * vcn_v5_0_2_pause_dpg_mode - VCN pause with dpg mode
 *
 * @vinst: VCN instance
 * @new_state: pause state
 *
 * Pause dpg mode for VCN block
 */
static int vcn_v5_0_2_pause_dpg_mode(struct amdgpu_vcn_inst *vinst,
                                struct dpg_pause_state *new_state)
{
        struct amdgpu_device *adev = vinst->adev;
        uint32_t reg_data = 0;
        int vcn_inst;

        vcn_inst = GET_INST(VCN, vinst->inst);

        /* pause/unpause if state is changed */
        if (vinst->pause_state.fw_based != new_state->fw_based) {
                DRM_DEV_DEBUG(adev->dev, "dpg pause state changed %d -> %d %s\n",
                        vinst->pause_state.fw_based, new_state->fw_based,
                        new_state->fw_based ? "VCN_DPG_STATE__PAUSE" : "VCN_DPG_STATE__UNPAUSE");
                reg_data = RREG32_SOC15(VCN, vcn_inst, regUVD_DPG_PAUSE) &
                                (~UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK);

                if (new_state->fw_based == VCN_DPG_STATE__PAUSE) {
                        /* pause DPG */
                        reg_data |= UVD_DPG_PAUSE__NJ_PAUSE_DPG_REQ_MASK;
                        WREG32_SOC15(VCN, vcn_inst, regUVD_DPG_PAUSE, reg_data);

                        /* wait for ACK */
                        SOC15_WAIT_ON_RREG(VCN, vcn_inst, regUVD_DPG_PAUSE,
                                        UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK,
                                        UVD_DPG_PAUSE__NJ_PAUSE_DPG_ACK_MASK);
                } else {
                        /* unpause DPG, no need to wait */
                        reg_data &= ~UVD_DPG_PAUSE__NJ_PAUSE_DPG_REQ_MASK;
                        WREG32_SOC15(VCN, vcn_inst, regUVD_DPG_PAUSE, reg_data);
                }
                vinst->pause_state.fw_based = new_state->fw_based;
        }

        return 0;
}

/**
 * vcn_v5_0_2_start_dpg_mode - VCN start with dpg mode
 *
 * @vinst: VCN instance
 * @indirect: indirectly write sram
 *
 * Start VCN block with dpg mode
 */
static int vcn_v5_0_2_start_dpg_mode(struct amdgpu_vcn_inst *vinst,
                                     bool indirect)
{
        struct amdgpu_device *adev = vinst->adev;
        int inst_idx = vinst->inst;
        struct amdgpu_vcn5_fw_shared *fw_shared =
                adev->vcn.inst[inst_idx].fw_shared.cpu_addr;
        struct amdgpu_ring *ring;
        struct dpg_pause_state state = {.fw_based = VCN_DPG_STATE__PAUSE};
        int vcn_inst, ret;
        uint32_t tmp;

        vcn_inst = GET_INST(VCN, inst_idx);

        /* disable register anti-hang mechanism */
        WREG32_P(SOC15_REG_OFFSET(VCN, vcn_inst, regUVD_POWER_STATUS), 1,
                ~UVD_POWER_STATUS__UVD_POWER_STATUS_MASK);

        /* enable dynamic power gating mode */
        tmp = RREG32_SOC15(VCN, vcn_inst, regUVD_POWER_STATUS);
        tmp |= UVD_POWER_STATUS__UVD_PG_MODE_MASK;
        WREG32_SOC15(VCN, vcn_inst, regUVD_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;
                /* Use dummy register 0xDEADBEEF passing AID selection to PSP FW */
                WREG32_SOC24_DPG_MODE(inst_idx, 0xDEADBEEF,
                                adev->vcn.inst[inst_idx].aid_id, 0, true);
        }

        /* enable VCPU clock */
        tmp = (0xFF << UVD_VCPU_CNTL__PRB_TIMEOUT_VAL__SHIFT);
        tmp |= UVD_VCPU_CNTL__CLK_EN_MASK | UVD_VCPU_CNTL__BLK_RST_MASK;
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_VCPU_CNTL), tmp, 0, indirect);

        /* disable master interrupt */
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_MASTINT_EN), 0, 0, indirect);

        /* setup regUVD_LMI_CTRL */
        tmp = (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_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_LMI_CTRL), tmp, 0, indirect);

        vcn_v5_0_2_mc_resume_dpg_mode(vinst, indirect);

        tmp = (0xFF << UVD_VCPU_CNTL__PRB_TIMEOUT_VAL__SHIFT);
        tmp |= UVD_VCPU_CNTL__CLK_EN_MASK;
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_VCPU_CNTL), tmp, 0, indirect);

        /* enable LMI MC and UMC channels */
        tmp = 0x1f << UVD_LMI_CTRL2__RE_OFLD_MIF_WR_REQ_NUM__SHIFT;
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_LMI_CTRL2), tmp, 0, indirect);

        /* enable master interrupt */
        WREG32_SOC24_DPG_MODE(inst_idx, SOC24_DPG_MODE_OFFSET(
                VCN, 0, regUVD_MASTINT_EN),
                UVD_MASTINT_EN__VCPU_EN_MASK, 0, indirect);

        if (indirect) {
                ret = amdgpu_vcn_psp_update_sram(adev, inst_idx, AMDGPU_UCODE_ID_VCN0_RAM);
                if (ret) {
                        dev_err(adev->dev, "vcn sram load failed %d\n", ret);
                        return ret;
                }
        }

        /* resetting ring, fw should not check RB ring */
        fw_shared->sq.queue_mode |= FW_QUEUE_RING_RESET;

        /* Pause dpg */
        vcn_v5_0_2_pause_dpg_mode(vinst, &state);

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

        WREG32_SOC15(VCN, vcn_inst, regUVD_RB_BASE_LO, lower_32_bits(ring->gpu_addr));
        WREG32_SOC15(VCN, vcn_inst, regUVD_RB_BASE_HI, upper_32_bits(ring->gpu_addr));
        WREG32_SOC15(VCN, vcn_inst, regUVD_RB_SIZE, ring->ring_size / sizeof(uint32_t));

        tmp = RREG32_SOC15(VCN, vcn_inst, regVCN_RB_ENABLE);
        tmp &= ~(VCN_RB_ENABLE__RB1_EN_MASK);
        WREG32_SOC15(VCN, vcn_inst, regVCN_RB_ENABLE, tmp);
        WREG32_SOC15(VCN, vcn_inst, regUVD_RB_RPTR, 0);
        WREG32_SOC15(VCN, vcn_inst, regUVD_RB_WPTR, 0);

        ring->wptr = RREG32_SOC15(VCN, vcn_inst, regUVD_RB_WPTR);

        tmp = RREG32_SOC15(VCN, vcn_inst, regVCN_RB_ENABLE);
        tmp |= VCN_RB_ENABLE__RB1_EN_MASK;
        WREG32_SOC15(VCN, vcn_inst, regVCN_RB_ENABLE, tmp);
        /* resetting done, fw can check RB ring */
        fw_shared->sq.queue_mode &= ~(FW_QUEUE_RING_RESET | FW_QUEUE_DPG_HOLD_OFF);

        WREG32_SOC15(VCN, vcn_inst, regVCN_RB1_DB_CTRL,
                ring->doorbell_index << VCN_RB1_DB_CTRL__OFFSET__SHIFT |
                VCN_RB1_DB_CTRL__EN_MASK);
        /* Read DB_CTRL to flush the write DB_CTRL command. */
        RREG32_SOC15(VCN, vcn_inst, regVCN_RB1_DB_CTRL);

        return 0;
}

/**
 * vcn_v5_0_2_start - VCN start
 *
 * @vinst: VCN instance
 *
 * Start VCN block
 */
static int vcn_v5_0_2_start(struct amdgpu_vcn_inst *vinst)
{
        struct amdgpu_device *adev = vinst->adev;
        int i = vinst->inst;
        struct amdgpu_vcn5_fw_shared *fw_shared;
        struct amdgpu_ring *ring;
        uint32_t tmp;
        int j, k, r, vcn_inst;

        fw_shared = adev->vcn.inst[i].fw_shared.cpu_addr;

        if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)
                return vcn_v5_0_2_start_dpg_mode(vinst, adev->vcn.inst[i].indirect_sram);

        vcn_inst = GET_INST(VCN, i);

        /* set VCN status busy */
        tmp = RREG32_SOC15(VCN, vcn_inst, regUVD_STATUS) | UVD_STATUS__UVD_BUSY;
        WREG32_SOC15(VCN, vcn_inst, regUVD_STATUS, tmp);

        /* enable VCPU clock */
        WREG32_P(SOC15_REG_OFFSET(VCN, vcn_inst, regUVD_VCPU_CNTL),
                 UVD_VCPU_CNTL__CLK_EN_MASK, ~UVD_VCPU_CNTL__CLK_EN_MASK);

        /* disable master interrupt */
        WREG32_P(SOC15_REG_OFFSET(VCN, vcn_inst, regUVD_MASTINT_EN), 0,
                 ~UVD_MASTINT_EN__VCPU_EN_MASK);

        /* enable LMI MC and UMC channels */
        WREG32_P(SOC15_REG_OFFSET(VCN, vcn_inst, regUVD_LMI_CTRL2), 0,
                 ~UVD_LMI_CTRL2__STALL_ARB_UMC_MASK);

        tmp = RREG32_SOC15(VCN, vcn_inst, regUVD_SOFT_RESET);
        tmp &= ~UVD_SOFT_RESET__LMI_SOFT_RESET_MASK;
        tmp &= ~UVD_SOFT_RESET__LMI_UMC_SOFT_RESET_MASK;
        WREG32_SOC15(VCN, vcn_inst, regUVD_SOFT_RESET, tmp);

        /* setup regUVD_LMI_CTRL */
        tmp = RREG32_SOC15(VCN, vcn_inst, regUVD_LMI_CTRL);
        WREG32_SOC15(VCN, vcn_inst, regUVD_LMI_CTRL, tmp |
                     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);

        vcn_v5_0_2_mc_resume(vinst);

        /* VCN global tiling registers */
        WREG32_SOC15(VCN, vcn_inst, regUVD_GFX10_ADDR_CONFIG,
                     adev->gfx.config.gb_addr_config);

        /* unblock VCPU register access */
        WREG32_P(SOC15_REG_OFFSET(VCN, vcn_inst, regUVD_RB_ARB_CTRL), 0,
                 ~UVD_RB_ARB_CTRL__VCPU_DIS_MASK);

        /* release VCPU reset to boot */
        WREG32_P(SOC15_REG_OFFSET(VCN, vcn_inst, regUVD_VCPU_CNTL), 0,
                 ~UVD_VCPU_CNTL__BLK_RST_MASK);

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

                for (k = 0; k < 100; ++k) {
                        status = RREG32_SOC15(VCN, vcn_inst, regUVD_STATUS);
                        if (status & 2)
                                break;
                        mdelay(1000);
                        if (amdgpu_emu_mode == 1)
                                msleep(520);
                }

                if (amdgpu_emu_mode == 1) {
                        r = -1;
                        if (status & 2) {
                                r = 0;
                                break;
                        }
                } else {
                        r = 0;
                        if (status & 2)
                                break;

                        dev_err(adev->dev,
                                "VCN[%d] is not responding, trying to reset the VCPU!!!\n", i);
                        WREG32_P(SOC15_REG_OFFSET(VCN, vcn_inst, regUVD_VCPU_CNTL),
                                 UVD_VCPU_CNTL__BLK_RST_MASK,
                                 ~UVD_VCPU_CNTL__BLK_RST_MASK);
                        mdelay(10);
                        WREG32_P(SOC15_REG_OFFSET(VCN, vcn_inst, regUVD_VCPU_CNTL), 0,
                                 ~UVD_VCPU_CNTL__BLK_RST_MASK);

                        mdelay(10);
                        r = -1;
                }
        }

        if (r) {
                dev_err(adev->dev, "VCN[%d] is not responding, giving up!!!\n", i);
                return r;
        }

        /* enable master interrupt */
        WREG32_P(SOC15_REG_OFFSET(VCN, vcn_inst, regUVD_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(VCN, vcn_inst, regUVD_STATUS), 0,
                 ~(2 << UVD_STATUS__VCPU_REPORT__SHIFT));

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

        WREG32_SOC15(VCN, vcn_inst, regVCN_RB1_DB_CTRL,
                     ring->doorbell_index << VCN_RB1_DB_CTRL__OFFSET__SHIFT |
                     VCN_RB1_DB_CTRL__EN_MASK);

        /* Read DB_CTRL to flush the write DB_CTRL command. */
        RREG32_SOC15(VCN, vcn_inst, regVCN_RB1_DB_CTRL);

        WREG32_SOC15(VCN, vcn_inst, regUVD_RB_BASE_LO, ring->gpu_addr);
        WREG32_SOC15(VCN, vcn_inst, regUVD_RB_BASE_HI, upper_32_bits(ring->gpu_addr));
        WREG32_SOC15(VCN, vcn_inst, regUVD_RB_SIZE, ring->ring_size / 4);

        tmp = RREG32_SOC15(VCN, vcn_inst, regVCN_RB_ENABLE);
        tmp &= ~(VCN_RB_ENABLE__RB1_EN_MASK);
        WREG32_SOC15(VCN, vcn_inst, regVCN_RB_ENABLE, tmp);
        fw_shared->sq.queue_mode |= FW_QUEUE_RING_RESET;
        WREG32_SOC15(VCN, vcn_inst, regUVD_RB_RPTR, 0);
        WREG32_SOC15(VCN, vcn_inst, regUVD_RB_WPTR, 0);

        tmp = RREG32_SOC15(VCN, vcn_inst, regUVD_RB_RPTR);
        WREG32_SOC15(VCN, vcn_inst, regUVD_RB_WPTR, tmp);
        ring->wptr = RREG32_SOC15(VCN, vcn_inst, regUVD_RB_WPTR);

        tmp = RREG32_SOC15(VCN, vcn_inst, regVCN_RB_ENABLE);
        tmp |= VCN_RB_ENABLE__RB1_EN_MASK;
        WREG32_SOC15(VCN, vcn_inst, regVCN_RB_ENABLE, tmp);
        fw_shared->sq.queue_mode &= ~(FW_QUEUE_RING_RESET | FW_QUEUE_DPG_HOLD_OFF);

        return 0;
}

/**
 * vcn_v5_0_2_stop_dpg_mode - VCN stop with dpg mode
 *
 * @vinst: VCN instance
 *
 * Stop VCN block with dpg mode
 */
static void vcn_v5_0_2_stop_dpg_mode(struct amdgpu_vcn_inst *vinst)
{
        struct amdgpu_device *adev = vinst->adev;
        int inst_idx = vinst->inst;
        uint32_t tmp;
        int vcn_inst;
        struct dpg_pause_state state = {.fw_based = VCN_DPG_STATE__UNPAUSE};

        vcn_inst = GET_INST(VCN, inst_idx);

        /* Unpause dpg */
        vcn_v5_0_2_pause_dpg_mode(vinst, &state);

        /* Wait for power status to be 1 */
        SOC15_WAIT_ON_RREG(VCN, vcn_inst, regUVD_POWER_STATUS, 1,
                UVD_POWER_STATUS__UVD_POWER_STATUS_MASK);

        /* wait for read ptr to be equal to write ptr */
        tmp = RREG32_SOC15(VCN, vcn_inst, regUVD_RB_WPTR);
        SOC15_WAIT_ON_RREG(VCN, vcn_inst, regUVD_RB_RPTR, tmp, 0xFFFFFFFF);

        /* disable dynamic power gating mode */
        WREG32_P(SOC15_REG_OFFSET(VCN, vcn_inst, regUVD_POWER_STATUS), 0,
                ~UVD_POWER_STATUS__UVD_PG_MODE_MASK);
}

/**
 * vcn_v5_0_2_stop - VCN stop
 *
 * @vinst: VCN instance
 *
 * Stop VCN block
 */
static int vcn_v5_0_2_stop(struct amdgpu_vcn_inst *vinst)
{
        struct amdgpu_device *adev = vinst->adev;
        int i = vinst->inst;
        struct amdgpu_vcn5_fw_shared *fw_shared;
        uint32_t tmp;
        int r = 0, vcn_inst;

        vcn_inst = GET_INST(VCN, i);

        fw_shared = adev->vcn.inst[i].fw_shared.cpu_addr;
        fw_shared->sq.queue_mode |= FW_QUEUE_DPG_HOLD_OFF;

        if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) {
                vcn_v5_0_2_stop_dpg_mode(vinst);
                return 0;
        }

        /* wait for vcn idle */
        r = SOC15_WAIT_ON_RREG(VCN, vcn_inst, regUVD_STATUS, UVD_STATUS__IDLE, 0x7);
        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;
        r = SOC15_WAIT_ON_RREG(VCN, vcn_inst, regUVD_LMI_STATUS, tmp, tmp);
        if (r)
                return r;

        /* disable LMI UMC channel */
        tmp = RREG32_SOC15(VCN, vcn_inst, regUVD_LMI_CTRL2);
        tmp |= UVD_LMI_CTRL2__STALL_ARB_UMC_MASK;
        WREG32_SOC15(VCN, vcn_inst, regUVD_LMI_CTRL2, tmp);
        tmp = UVD_LMI_STATUS__UMC_READ_CLEAN_RAW_MASK |
                UVD_LMI_STATUS__UMC_WRITE_CLEAN_RAW_MASK;
        r = SOC15_WAIT_ON_RREG(VCN, vcn_inst, regUVD_LMI_STATUS, tmp, tmp);
        if (r)
                return r;

        /* block VCPU register access */
        WREG32_P(SOC15_REG_OFFSET(VCN, vcn_inst, regUVD_RB_ARB_CTRL),
                 UVD_RB_ARB_CTRL__VCPU_DIS_MASK,
                 ~UVD_RB_ARB_CTRL__VCPU_DIS_MASK);

        /* reset VCPU */
        WREG32_P(SOC15_REG_OFFSET(VCN, vcn_inst, regUVD_VCPU_CNTL),
                 UVD_VCPU_CNTL__BLK_RST_MASK,
                 ~UVD_VCPU_CNTL__BLK_RST_MASK);

        /* disable VCPU clock */
        WREG32_P(SOC15_REG_OFFSET(VCN, vcn_inst, regUVD_VCPU_CNTL), 0,
                 ~(UVD_VCPU_CNTL__CLK_EN_MASK));

        /* apply soft reset */
        tmp = RREG32_SOC15(VCN, vcn_inst, regUVD_SOFT_RESET);
        tmp |= UVD_SOFT_RESET__LMI_UMC_SOFT_RESET_MASK;
        WREG32_SOC15(VCN, vcn_inst, regUVD_SOFT_RESET, tmp);
        tmp = RREG32_SOC15(VCN, vcn_inst, regUVD_SOFT_RESET);
        tmp |= UVD_SOFT_RESET__LMI_SOFT_RESET_MASK;
        WREG32_SOC15(VCN, vcn_inst, regUVD_SOFT_RESET, tmp);

        /* clear status */
        WREG32_SOC15(VCN, vcn_inst, regUVD_STATUS, 0);

        return 0;
}

/**
 * vcn_v5_0_2_unified_ring_get_rptr - get unified read pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Returns the current hardware unified read pointer
 */
static uint64_t vcn_v5_0_2_unified_ring_get_rptr(struct amdgpu_ring *ring)
{
        struct amdgpu_device *adev = ring->adev;

        if (ring != &adev->vcn.inst[ring->me].ring_enc[0])
                DRM_ERROR("wrong ring id is identified in %s", __func__);

        return RREG32_SOC15(VCN, GET_INST(VCN, ring->me), regUVD_RB_RPTR);
}

/**
 * vcn_v5_0_2_unified_ring_get_wptr - get unified write pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Returns the current hardware unified write pointer
 */
static uint64_t vcn_v5_0_2_unified_ring_get_wptr(struct amdgpu_ring *ring)
{
        struct amdgpu_device *adev = ring->adev;

        if (ring != &adev->vcn.inst[ring->me].ring_enc[0])
                DRM_ERROR("wrong ring id is identified in %s", __func__);

        if (ring->use_doorbell)
                return *ring->wptr_cpu_addr;
        else
                return RREG32_SOC15(VCN, GET_INST(VCN, ring->me), regUVD_RB_WPTR);
}

/**
 * vcn_v5_0_2_unified_ring_set_wptr - set enc write pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Commits the enc write pointer to the hardware
 */
static void vcn_v5_0_2_unified_ring_set_wptr(struct amdgpu_ring *ring)
{
        struct amdgpu_device *adev = ring->adev;

        if (ring != &adev->vcn.inst[ring->me].ring_enc[0])
                DRM_ERROR("wrong ring id is identified in %s", __func__);

        if (ring->use_doorbell) {
                *ring->wptr_cpu_addr = lower_32_bits(ring->wptr);
                WDOORBELL32(ring->doorbell_index, lower_32_bits(ring->wptr));
        } else {
                WREG32_SOC15(VCN, GET_INST(VCN, ring->me), regUVD_RB_WPTR,
                                lower_32_bits(ring->wptr));
        }
}

static const struct amdgpu_ring_funcs vcn_v5_0_2_unified_ring_vm_funcs = {
        .type = AMDGPU_RING_TYPE_VCN_ENC,
        .align_mask = 0x3f,
        .nop = VCN_ENC_CMD_NO_OP,
        .no_user_fence = true,
        .get_rptr = vcn_v5_0_2_unified_ring_get_rptr,
        .get_wptr = vcn_v5_0_2_unified_ring_get_wptr,
        .set_wptr = vcn_v5_0_2_unified_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_v4_0_3_enc_ring_emit_vm_flush,
        .emit_hdp_flush = vcn_v4_0_3_ring_emit_hdp_flush,
        .test_ring = amdgpu_vcn_enc_ring_test_ring,
        .test_ib = amdgpu_vcn_unified_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_v4_0_3_enc_ring_emit_wreg,
        .emit_reg_wait = vcn_v4_0_3_enc_ring_emit_reg_wait,
        .emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper,
};

/**
 * vcn_v5_0_2_set_unified_ring_funcs - set unified ring functions
 *
 * @adev: amdgpu_device pointer
 *
 * Set unified ring functions
 */
static void vcn_v5_0_2_set_unified_ring_funcs(struct amdgpu_device *adev)
{
        int i, vcn_inst;

        for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
                adev->vcn.inst[i].ring_enc[0].funcs = &vcn_v5_0_2_unified_ring_vm_funcs;
                adev->vcn.inst[i].ring_enc[0].me = i;
                vcn_inst = GET_INST(VCN, i);
                adev->vcn.inst[i].aid_id = vcn_inst / adev->vcn.num_inst_per_aid;
        }
}

/**
 * vcn_v5_0_2_is_idle - check VCN block is idle
 *
 * @ip_block: Pointer to the amdgpu_ip_block structure
 *
 * Check whether VCN block is idle
 */
static bool vcn_v5_0_2_is_idle(struct amdgpu_ip_block *ip_block)
{
        struct amdgpu_device *adev = ip_block->adev;
        int i, ret = 1;

        for (i = 0; i < adev->vcn.num_vcn_inst; ++i)
                ret &= (RREG32_SOC15(VCN, GET_INST(VCN, i), regUVD_STATUS) == UVD_STATUS__IDLE);

        return ret;
}

/**
 * vcn_v5_0_2_wait_for_idle - wait for VCN block idle
 *
 * @ip_block: Pointer to the amdgpu_ip_block for this hw instance.
 *
 * Wait for VCN block idle
 */
static int vcn_v5_0_2_wait_for_idle(struct amdgpu_ip_block *ip_block)
{
        struct amdgpu_device *adev = ip_block->adev;
        int i, ret = 0;

        for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
                ret = SOC15_WAIT_ON_RREG(VCN, GET_INST(VCN, i), regUVD_STATUS, UVD_STATUS__IDLE,
                        UVD_STATUS__IDLE);
                if (ret)
                        return ret;
        }

        return ret;
}

/**
 * vcn_v5_0_2_set_clockgating_state - set VCN block clockgating state
 *
 * @ip_block: Pointer to the amdgpu_ip_block for this hw instance.
 * @state: clock gating state
 *
 * Set VCN block clockgating state
 */
static int vcn_v5_0_2_set_clockgating_state(struct amdgpu_ip_block *ip_block,
                                            enum amd_clockgating_state state)
{
        struct amdgpu_device *adev = ip_block->adev;
        bool enable = state == AMD_CG_STATE_GATE;
        int i;

        for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
                struct amdgpu_vcn_inst *vinst = &adev->vcn.inst[i];

                if (enable) {
                        if (RREG32_SOC15(VCN, GET_INST(VCN, i), regUVD_STATUS) != UVD_STATUS__IDLE)
                                return -EBUSY;
                        vcn_v5_0_2_enable_clock_gating(vinst);
                } else {
                        vcn_v5_0_2_disable_clock_gating(vinst);
                }
        }

        return 0;
}

static int vcn_v5_0_2_set_pg_state(struct amdgpu_vcn_inst *vinst,
                                   enum amd_powergating_state state)
{
        int ret = 0;

        if (state == vinst->cur_state)
                return 0;

        if (state == AMD_PG_STATE_GATE)
                ret = vcn_v5_0_2_stop(vinst);
        else
                ret = vcn_v5_0_2_start(vinst);

        if (!ret)
                vinst->cur_state = state;

        return ret;
}

/**
 * vcn_v5_0_2_process_interrupt - process VCN block interrupt
 *
 * @adev: amdgpu_device pointer
 * @source: interrupt sources
 * @entry: interrupt entry from clients and sources
 *
 * Process VCN block interrupt
 */
static int vcn_v5_0_2_process_interrupt(struct amdgpu_device *adev, struct amdgpu_irq_src *source,
        struct amdgpu_iv_entry *entry)
{
        uint32_t i, inst;

        i = node_id_to_phys_map[entry->node_id];

        DRM_DEV_DEBUG(adev->dev, "IH: VCN TRAP\n");

        for (inst = 0; inst < adev->vcn.num_vcn_inst; ++inst)
                if (adev->vcn.inst[inst].aid_id == i)
                        break;

        if (inst >= adev->vcn.num_vcn_inst) {
                dev_WARN_ONCE(adev->dev, 1,
                                "Interrupt received for unknown VCN instance %d",
                                entry->node_id);
                return 0;
        }

        switch (entry->src_id) {
        case VCN_5_0__SRCID__UVD_ENC_GENERAL_PURPOSE:
                amdgpu_fence_process(&adev->vcn.inst[inst].ring_enc[0]);
                break;
        default:
                DRM_DEV_ERROR(adev->dev, "Unhandled interrupt: %d %d\n",
                          entry->src_id, entry->src_data[0]);
                break;
        }

        return 0;
}

static const struct amdgpu_irq_src_funcs vcn_v5_0_2_irq_funcs = {
        .process = vcn_v5_0_2_process_interrupt,
};

/**
 * vcn_v5_0_2_set_irq_funcs - set VCN block interrupt irq functions
 *
 * @adev: amdgpu_device pointer
 *
 * Set VCN block interrupt irq functions
 */
static void vcn_v5_0_2_set_irq_funcs(struct amdgpu_device *adev)
{
        int i;

        for (i = 0; i < adev->vcn.num_vcn_inst; ++i)
                adev->vcn.inst->irq.num_types++;
        adev->vcn.inst->irq.funcs = &vcn_v5_0_2_irq_funcs;
}

static const struct amd_ip_funcs vcn_v5_0_2_ip_funcs = {
        .name = "vcn_v5_0_2",
        .early_init = vcn_v5_0_2_early_init,
        .late_init = NULL,
        .sw_init = vcn_v5_0_2_sw_init,
        .sw_fini = vcn_v5_0_2_sw_fini,
        .hw_init = vcn_v5_0_2_hw_init,
        .hw_fini = vcn_v5_0_2_hw_fini,
        .suspend = vcn_v5_0_2_suspend,
        .resume = vcn_v5_0_2_resume,
        .is_idle = vcn_v5_0_2_is_idle,
        .wait_for_idle = vcn_v5_0_2_wait_for_idle,
        .check_soft_reset = NULL,
        .pre_soft_reset = NULL,
        .soft_reset = NULL,
        .post_soft_reset = NULL,
        .set_clockgating_state = vcn_v5_0_2_set_clockgating_state,
        .set_powergating_state = vcn_set_powergating_state,
};

const struct amdgpu_ip_block_version vcn_v5_0_2_ip_block = {
        .type = AMD_IP_BLOCK_TYPE_VCN,
        .major = 5,
        .minor = 0,
        .rev = 2,
        .funcs = &vcn_v5_0_2_ip_funcs,
};