/*
 * 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 "amdgpu.h"
#include "amdgpu_jpeg.h"
#include "amdgpu_pm.h"
#include "soc15.h"
#include "soc15d.h"
#include "jpeg_v2_0.h"

#include "vcn/vcn_2_0_0_offset.h"
#include "vcn/vcn_2_0_0_sh_mask.h"
#include "ivsrcid/vcn/irqsrcs_vcn_2_0.h"

#define mmUVD_JRBC_EXTERNAL_REG_INTERNAL_OFFSET                         0x1bfff
#define mmUVD_JPEG_GPCOM_CMD_INTERNAL_OFFSET                            0x4029
#define mmUVD_JPEG_GPCOM_DATA0_INTERNAL_OFFSET                          0x402a
#define mmUVD_JPEG_GPCOM_DATA1_INTERNAL_OFFSET                          0x402b
#define mmUVD_LMI_JRBC_RB_MEM_WR_64BIT_BAR_LOW_INTERNAL_OFFSET          0x40ea
#define mmUVD_LMI_JRBC_RB_MEM_WR_64BIT_BAR_HIGH_INTERNAL_OFFSET         0x40eb
#define mmUVD_LMI_JRBC_IB_VMID_INTERNAL_OFFSET                          0x40cf
#define mmUVD_LMI_JPEG_VMID_INTERNAL_OFFSET                             0x40d1
#define mmUVD_LMI_JRBC_IB_64BIT_BAR_LOW_INTERNAL_OFFSET                 0x40e8
#define mmUVD_LMI_JRBC_IB_64BIT_BAR_HIGH_INTERNAL_OFFSET                0x40e9
#define mmUVD_JRBC_IB_SIZE_INTERNAL_OFFSET                              0x4082
#define mmUVD_LMI_JRBC_RB_MEM_RD_64BIT_BAR_LOW_INTERNAL_OFFSET          0x40ec
#define mmUVD_LMI_JRBC_RB_MEM_RD_64BIT_BAR_HIGH_INTERNAL_OFFSET         0x40ed
#define mmUVD_JRBC_RB_COND_RD_TIMER_INTERNAL_OFFSET                     0x4085
#define mmUVD_JRBC_RB_REF_DATA_INTERNAL_OFFSET                          0x4084
#define mmUVD_JRBC_STATUS_INTERNAL_OFFSET                               0x4089
#define mmUVD_JPEG_PITCH_INTERNAL_OFFSET                                0x401f

#define JRBC_DEC_EXTERNAL_REG_WRITE_ADDR                                0x18000

static void jpeg_v2_0_set_dec_ring_funcs(struct amdgpu_device *adev);
static void jpeg_v2_0_set_irq_funcs(struct amdgpu_device *adev);
static int jpeg_v2_0_set_powergating_state(void *handle,
                                enum amd_powergating_state state);

/**
 * jpeg_v2_0_early_init - set function pointers
 *
 * @handle: amdgpu_device pointer
 *
 * Set ring and irq function pointers
 */
static int jpeg_v2_0_early_init(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        adev->jpeg.num_jpeg_inst = 1;

        jpeg_v2_0_set_dec_ring_funcs(adev);
        jpeg_v2_0_set_irq_funcs(adev);

        return 0;
}

/**
 * jpeg_v2_0_sw_init - sw init for JPEG block
 *
 * @handle: amdgpu_device pointer
 *
 * Load firmware and sw initialization
 */
static int jpeg_v2_0_sw_init(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
        struct amdgpu_ring *ring;
        int r;

        /* JPEG TRAP */
        r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_VCN,
                VCN_2_0__SRCID__JPEG_DECODE, &adev->jpeg.inst->irq);
        if (r)
                return r;

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

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

        ring = &adev->jpeg.inst->ring_dec;
        ring->use_doorbell = true;
        ring->doorbell_index = (adev->doorbell_index.vcn.vcn_ring0_1 << 1) + 1;
        sprintf(ring->name, "jpeg_dec");
        r = amdgpu_ring_init(adev, ring, 512, &adev->jpeg.inst->irq,
                             0, AMDGPU_RING_PRIO_DEFAULT);
        if (r)
                return r;

        adev->jpeg.internal.jpeg_pitch = mmUVD_JPEG_PITCH_INTERNAL_OFFSET;
        adev->jpeg.inst->external.jpeg_pitch = SOC15_REG_OFFSET(JPEG, 0, mmUVD_JPEG_PITCH);

        return 0;
}

/**
 * jpeg_v2_0_sw_fini - sw fini for JPEG block
 *
 * @handle: amdgpu_device pointer
 *
 * JPEG suspend and free up sw allocation
 */
static int jpeg_v2_0_sw_fini(void *handle)
{
        int r;
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

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

        r = amdgpu_jpeg_sw_fini(adev);

        return r;
}

/**
 * jpeg_v2_0_hw_init - start and test JPEG block
 *
 * @handle: amdgpu_device pointer
 *
 */
static int jpeg_v2_0_hw_init(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
        struct amdgpu_ring *ring = &adev->jpeg.inst->ring_dec;
        int r;

        adev->nbio.funcs->vcn_doorbell_range(adev, ring->use_doorbell,
                (adev->doorbell_index.vcn.vcn_ring0_1 << 1), 0);

        r = amdgpu_ring_test_helper(ring);
        if (!r)
                DRM_INFO("JPEG decode initialized successfully.\n");

        return r;
}

/**
 * jpeg_v2_0_hw_fini - stop the hardware block
 *
 * @handle: amdgpu_device pointer
 *
 * Stop the JPEG block, mark ring as not ready any more
 */
static int jpeg_v2_0_hw_fini(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        if (adev->jpeg.cur_state != AMD_PG_STATE_GATE &&
              RREG32_SOC15(JPEG, 0, mmUVD_JRBC_STATUS))
                jpeg_v2_0_set_powergating_state(adev, AMD_PG_STATE_GATE);

        return 0;
}

/**
 * jpeg_v2_0_suspend - suspend JPEG block
 *
 * @handle: amdgpu_device pointer
 *
 * HW fini and suspend JPEG block
 */
static int jpeg_v2_0_suspend(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
        int r;

        r = jpeg_v2_0_hw_fini(adev);
        if (r)
                return r;

        r = amdgpu_jpeg_suspend(adev);

        return r;
}

/**
 * jpeg_v2_0_resume - resume JPEG block
 *
 * @handle: amdgpu_device pointer
 *
 * Resume firmware and hw init JPEG block
 */
static int jpeg_v2_0_resume(void *handle)
{
        int r;
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

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

        r = jpeg_v2_0_hw_init(adev);

        return r;
}

static int jpeg_v2_0_disable_power_gating(struct amdgpu_device *adev)
{
        uint32_t data;
        int r = 0;

        if (adev->pg_flags & AMD_PG_SUPPORT_JPEG) {
                data = 1 << UVD_PGFSM_CONFIG__UVDJ_PWR_CONFIG__SHIFT;
                WREG32(SOC15_REG_OFFSET(JPEG, 0, mmUVD_PGFSM_CONFIG), data);

                r = SOC15_WAIT_ON_RREG(JPEG, 0,
                        mmUVD_PGFSM_STATUS, UVD_PGFSM_STATUS_UVDJ_PWR_ON,
                        UVD_PGFSM_STATUS__UVDJ_PWR_STATUS_MASK);

                if (r) {
                        DRM_ERROR("amdgpu: JPEG disable power gating failed\n");
                        return r;
                }
        }

        /* Removing the anti hang mechanism to indicate the UVDJ tile is ON */
        data = RREG32(SOC15_REG_OFFSET(JPEG, 0, mmUVD_JPEG_POWER_STATUS)) & ~0x1;
        WREG32(SOC15_REG_OFFSET(JPEG, 0, mmUVD_JPEG_POWER_STATUS), data);

        return 0;
}

static int jpeg_v2_0_enable_power_gating(struct amdgpu_device *adev)
{
        if (adev->pg_flags & AMD_PG_SUPPORT_JPEG) {
                uint32_t data;
                int r = 0;

                data = RREG32(SOC15_REG_OFFSET(JPEG, 0, mmUVD_JPEG_POWER_STATUS));
                data &= ~UVD_JPEG_POWER_STATUS__JPEG_POWER_STATUS_MASK;
                data |=  0x1; //UVD_JPEG_POWER_STATUS__JPEG_POWER_STATUS_TILES_OFF;
                WREG32(SOC15_REG_OFFSET(JPEG, 0, mmUVD_JPEG_POWER_STATUS), data);

                data = 2 << UVD_PGFSM_CONFIG__UVDJ_PWR_CONFIG__SHIFT;
                WREG32(SOC15_REG_OFFSET(JPEG, 0, mmUVD_PGFSM_CONFIG), data);

                r = SOC15_WAIT_ON_RREG(JPEG, 0, mmUVD_PGFSM_STATUS,
                        (2 << UVD_PGFSM_STATUS__UVDJ_PWR_STATUS__SHIFT),
                        UVD_PGFSM_STATUS__UVDJ_PWR_STATUS_MASK);

                if (r) {
                        DRM_ERROR("amdgpu: JPEG enable power gating failed\n");
                        return r;
                }
        }

        return 0;
}

static void jpeg_v2_0_disable_clock_gating(struct amdgpu_device *adev)
{
        uint32_t data;

        data = RREG32_SOC15(JPEG, 0, mmJPEG_CGC_CTRL);
        if (adev->cg_flags & AMD_CG_SUPPORT_JPEG_MGCG)
                data |= 1 << JPEG_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;
        else
                data &= ~JPEG_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;

        data |= 1 << JPEG_CGC_CTRL__CLK_GATE_DLY_TIMER__SHIFT;
        data |= 4 << JPEG_CGC_CTRL__CLK_OFF_DELAY__SHIFT;
        WREG32_SOC15(JPEG, 0, mmJPEG_CGC_CTRL, data);

        data = RREG32_SOC15(JPEG, 0, mmJPEG_CGC_GATE);
        data &= ~(JPEG_CGC_GATE__JPEG_DEC_MASK
                | JPEG_CGC_GATE__JPEG2_DEC_MASK
                | JPEG_CGC_GATE__JPEG_ENC_MASK
                | JPEG_CGC_GATE__JMCIF_MASK
                | JPEG_CGC_GATE__JRBBM_MASK);
        WREG32_SOC15(JPEG, 0, mmJPEG_CGC_GATE, data);
}

static void jpeg_v2_0_enable_clock_gating(struct amdgpu_device *adev)
{
        uint32_t data;

        data = RREG32_SOC15(JPEG, 0, mmJPEG_CGC_CTRL);
        if (adev->cg_flags & AMD_CG_SUPPORT_JPEG_MGCG)
                data |= 1 << JPEG_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;
        else
                data |= 0 << JPEG_CGC_CTRL__DYN_CLOCK_MODE__SHIFT;

        data |= 1 << JPEG_CGC_CTRL__CLK_GATE_DLY_TIMER__SHIFT;
        data |= 4 << JPEG_CGC_CTRL__CLK_OFF_DELAY__SHIFT;
        WREG32_SOC15(JPEG, 0, mmJPEG_CGC_CTRL, data);

        data = RREG32_SOC15(JPEG, 0, mmJPEG_CGC_GATE);
        data |= (JPEG_CGC_GATE__JPEG_DEC_MASK
                |JPEG_CGC_GATE__JPEG2_DEC_MASK
                |JPEG_CGC_GATE__JPEG_ENC_MASK
                |JPEG_CGC_GATE__JMCIF_MASK
                |JPEG_CGC_GATE__JRBBM_MASK);
        WREG32_SOC15(JPEG, 0, mmJPEG_CGC_GATE, data);
}

/**
 * jpeg_v2_0_start - start JPEG block
 *
 * @adev: amdgpu_device pointer
 *
 * Setup and start the JPEG block
 */
static int jpeg_v2_0_start(struct amdgpu_device *adev)
{
        struct amdgpu_ring *ring = &adev->jpeg.inst->ring_dec;
        int r;

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

        /* disable power gating */
        r = jpeg_v2_0_disable_power_gating(adev);
        if (r)
                return r;

        /* JPEG disable CGC */
        jpeg_v2_0_disable_clock_gating(adev);

        WREG32_SOC15(JPEG, 0, mmJPEG_DEC_GFX10_ADDR_CONFIG, adev->gfx.config.gb_addr_config);

        /* enable JMI channel */
        WREG32_P(SOC15_REG_OFFSET(JPEG, 0, mmUVD_JMI_CNTL), 0,
                ~UVD_JMI_CNTL__SOFT_RESET_MASK);

        /* enable System Interrupt for JRBC */
        WREG32_P(SOC15_REG_OFFSET(JPEG, 0, mmJPEG_SYS_INT_EN),
                JPEG_SYS_INT_EN__DJRBC_MASK,
                ~JPEG_SYS_INT_EN__DJRBC_MASK);

        WREG32_SOC15(JPEG, 0, mmUVD_LMI_JRBC_RB_VMID, 0);
        WREG32_SOC15(JPEG, 0, mmUVD_JRBC_RB_CNTL, (0x00000001L | 0x00000002L));
        WREG32_SOC15(JPEG, 0, mmUVD_LMI_JRBC_RB_64BIT_BAR_LOW,
                lower_32_bits(ring->gpu_addr));
        WREG32_SOC15(JPEG, 0, mmUVD_LMI_JRBC_RB_64BIT_BAR_HIGH,
                upper_32_bits(ring->gpu_addr));
        WREG32_SOC15(JPEG, 0, mmUVD_JRBC_RB_RPTR, 0);
        WREG32_SOC15(JPEG, 0, mmUVD_JRBC_RB_WPTR, 0);
        WREG32_SOC15(JPEG, 0, mmUVD_JRBC_RB_CNTL, 0x00000002L);
        WREG32_SOC15(JPEG, 0, mmUVD_JRBC_RB_SIZE, ring->ring_size / 4);
        ring->wptr = RREG32_SOC15(JPEG, 0, mmUVD_JRBC_RB_WPTR);

        return 0;
}

/**
 * jpeg_v2_0_stop - stop JPEG block
 *
 * @adev: amdgpu_device pointer
 *
 * stop the JPEG block
 */
static int jpeg_v2_0_stop(struct amdgpu_device *adev)
{
        int r;

        /* reset JMI */
        WREG32_P(SOC15_REG_OFFSET(JPEG, 0, mmUVD_JMI_CNTL),
                UVD_JMI_CNTL__SOFT_RESET_MASK,
                ~UVD_JMI_CNTL__SOFT_RESET_MASK);

        /* enable JPEG CGC */
        jpeg_v2_0_enable_clock_gating(adev);

        /* enable power gating */
        r = jpeg_v2_0_enable_power_gating(adev);
        if (r)
                return r;

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

        return 0;
}

/**
 * jpeg_v2_0_dec_ring_get_rptr - get read pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Returns the current hardware read pointer
 */
static uint64_t jpeg_v2_0_dec_ring_get_rptr(struct amdgpu_ring *ring)
{
        struct amdgpu_device *adev = ring->adev;

        return RREG32_SOC15(JPEG, 0, mmUVD_JRBC_RB_RPTR);
}

/**
 * jpeg_v2_0_dec_ring_get_wptr - get write pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Returns the current hardware write pointer
 */
static uint64_t jpeg_v2_0_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(JPEG, 0, mmUVD_JRBC_RB_WPTR);
}

/**
 * jpeg_v2_0_dec_ring_set_wptr - set write pointer
 *
 * @ring: amdgpu_ring pointer
 *
 * Commits the write pointer to the hardware
 */
static void jpeg_v2_0_dec_ring_set_wptr(struct amdgpu_ring *ring)
{
        struct amdgpu_device *adev = ring->adev;

        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(JPEG, 0, mmUVD_JRBC_RB_WPTR, lower_32_bits(ring->wptr));
        }
}

/**
 * jpeg_v2_0_dec_ring_insert_start - insert a start command
 *
 * @ring: amdgpu_ring pointer
 *
 * Write a start command to the ring.
 */
void jpeg_v2_0_dec_ring_insert_start(struct amdgpu_ring *ring)
{
        amdgpu_ring_write(ring, PACKETJ(mmUVD_JRBC_EXTERNAL_REG_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, 0x68e04);

        amdgpu_ring_write(ring, PACKETJ(JRBC_DEC_EXTERNAL_REG_WRITE_ADDR,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, 0x80010000);
}

/**
 * jpeg_v2_0_dec_ring_insert_end - insert a end command
 *
 * @ring: amdgpu_ring pointer
 *
 * Write a end command to the ring.
 */
void jpeg_v2_0_dec_ring_insert_end(struct amdgpu_ring *ring)
{
        amdgpu_ring_write(ring, PACKETJ(mmUVD_JRBC_EXTERNAL_REG_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, 0x68e04);

        amdgpu_ring_write(ring, PACKETJ(JRBC_DEC_EXTERNAL_REG_WRITE_ADDR,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, 0x00010000);
}

/**
 * jpeg_v2_0_dec_ring_emit_fence - emit an fence & trap command
 *
 * @ring: amdgpu_ring pointer
 * @addr: address
 * @seq: sequence number
 * @flags: fence related flags
 *
 * Write a fence and a trap command to the ring.
 */
void jpeg_v2_0_dec_ring_emit_fence(struct amdgpu_ring *ring, u64 addr, u64 seq,
                                unsigned flags)
{
        WARN_ON(flags & AMDGPU_FENCE_FLAG_64BIT);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_JPEG_GPCOM_DATA0_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, seq);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_JPEG_GPCOM_DATA1_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, seq);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_LMI_JRBC_RB_MEM_WR_64BIT_BAR_LOW_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, lower_32_bits(addr));

        amdgpu_ring_write(ring, PACKETJ(mmUVD_LMI_JRBC_RB_MEM_WR_64BIT_BAR_HIGH_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, upper_32_bits(addr));

        amdgpu_ring_write(ring, PACKETJ(mmUVD_JPEG_GPCOM_CMD_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, 0x8);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_JPEG_GPCOM_CMD_INTERNAL_OFFSET,
                0, PACKETJ_CONDITION_CHECK0, PACKETJ_TYPE4));
        amdgpu_ring_write(ring, 0);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_JRBC_EXTERNAL_REG_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, 0x3fbc);

        amdgpu_ring_write(ring, PACKETJ(JRBC_DEC_EXTERNAL_REG_WRITE_ADDR,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, 0x1);

        amdgpu_ring_write(ring, PACKETJ(0, 0, 0, PACKETJ_TYPE7));
        amdgpu_ring_write(ring, 0);
}

/**
 * jpeg_v2_0_dec_ring_emit_ib - execute indirect buffer
 *
 * @ring: amdgpu_ring pointer
 * @job: job to retrieve vmid from
 * @ib: indirect buffer to execute
 * @flags: unused
 *
 * Write ring commands to execute the indirect buffer.
 */
void jpeg_v2_0_dec_ring_emit_ib(struct amdgpu_ring *ring,
                                struct amdgpu_job *job,
                                struct amdgpu_ib *ib,
                                uint32_t flags)
{
        unsigned vmid = AMDGPU_JOB_GET_VMID(job);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_LMI_JRBC_IB_VMID_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, (vmid | (vmid << 4)));

        amdgpu_ring_write(ring, PACKETJ(mmUVD_LMI_JPEG_VMID_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, (vmid | (vmid << 4)));

        amdgpu_ring_write(ring, PACKETJ(mmUVD_LMI_JRBC_IB_64BIT_BAR_LOW_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, lower_32_bits(ib->gpu_addr));

        amdgpu_ring_write(ring, PACKETJ(mmUVD_LMI_JRBC_IB_64BIT_BAR_HIGH_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, upper_32_bits(ib->gpu_addr));

        amdgpu_ring_write(ring, PACKETJ(mmUVD_JRBC_IB_SIZE_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, ib->length_dw);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_LMI_JRBC_RB_MEM_RD_64BIT_BAR_LOW_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, lower_32_bits(ring->gpu_addr));

        amdgpu_ring_write(ring, PACKETJ(mmUVD_LMI_JRBC_RB_MEM_RD_64BIT_BAR_HIGH_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, upper_32_bits(ring->gpu_addr));

        amdgpu_ring_write(ring, PACKETJ(0, 0, PACKETJ_CONDITION_CHECK0, PACKETJ_TYPE2));
        amdgpu_ring_write(ring, 0);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_JRBC_RB_COND_RD_TIMER_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, 0x01400200);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_JRBC_RB_REF_DATA_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, 0x2);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_JRBC_STATUS_INTERNAL_OFFSET,
                0, PACKETJ_CONDITION_CHECK3, PACKETJ_TYPE3));
        amdgpu_ring_write(ring, 0x2);
}

void jpeg_v2_0_dec_ring_emit_reg_wait(struct amdgpu_ring *ring, uint32_t reg,
                                uint32_t val, uint32_t mask)
{
        uint32_t reg_offset = (reg << 2);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_JRBC_RB_COND_RD_TIMER_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, 0x01400200);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_JRBC_RB_REF_DATA_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        amdgpu_ring_write(ring, val);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_JRBC_EXTERNAL_REG_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        if (reg_offset >= 0x10000 && reg_offset <= 0x105ff) {
                amdgpu_ring_write(ring, 0);
                amdgpu_ring_write(ring,
                        PACKETJ((reg_offset >> 2), 0, 0, PACKETJ_TYPE3));
        } else {
                amdgpu_ring_write(ring, reg_offset);
                amdgpu_ring_write(ring, PACKETJ(JRBC_DEC_EXTERNAL_REG_WRITE_ADDR,
                        0, 0, PACKETJ_TYPE3));
        }
        amdgpu_ring_write(ring, mask);
}

void jpeg_v2_0_dec_ring_emit_vm_flush(struct amdgpu_ring *ring,
                                unsigned vmid, uint64_t pd_addr)
{
        struct amdgpu_vmhub *hub = &ring->adev->vmhub[ring->funcs->vmhub];
        uint32_t data0, data1, mask;

        pd_addr = amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);

        /* wait for register write */
        data0 = hub->ctx0_ptb_addr_lo32 + vmid * hub->ctx_addr_distance;
        data1 = lower_32_bits(pd_addr);
        mask = 0xffffffff;
        jpeg_v2_0_dec_ring_emit_reg_wait(ring, data0, data1, mask);
}

void jpeg_v2_0_dec_ring_emit_wreg(struct amdgpu_ring *ring, uint32_t reg, uint32_t val)
{
        uint32_t reg_offset = (reg << 2);

        amdgpu_ring_write(ring, PACKETJ(mmUVD_JRBC_EXTERNAL_REG_INTERNAL_OFFSET,
                0, 0, PACKETJ_TYPE0));
        if (reg_offset >= 0x10000 && reg_offset <= 0x105ff) {
                amdgpu_ring_write(ring, 0);
                amdgpu_ring_write(ring,
                        PACKETJ((reg_offset >> 2), 0, 0, PACKETJ_TYPE0));
        } else {
                amdgpu_ring_write(ring, reg_offset);
                amdgpu_ring_write(ring, PACKETJ(JRBC_DEC_EXTERNAL_REG_WRITE_ADDR,
                        0, 0, PACKETJ_TYPE0));
        }
        amdgpu_ring_write(ring, val);
}

void jpeg_v2_0_dec_ring_nop(struct amdgpu_ring *ring, uint32_t count)
{
        int i;

        WARN_ON(ring->wptr % 2 || count % 2);

        for (i = 0; i < count / 2; i++) {
                amdgpu_ring_write(ring, PACKETJ(0, 0, 0, PACKETJ_TYPE6));
                amdgpu_ring_write(ring, 0);
        }
}

static bool jpeg_v2_0_is_idle(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;

        return ((RREG32_SOC15(JPEG, 0, mmUVD_JRBC_STATUS) &
                UVD_JRBC_STATUS__RB_JOB_DONE_MASK) ==
                UVD_JRBC_STATUS__RB_JOB_DONE_MASK);
}

static int jpeg_v2_0_wait_for_idle(void *handle)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
        int ret;

        ret = SOC15_WAIT_ON_RREG(JPEG, 0, mmUVD_JRBC_STATUS, UVD_JRBC_STATUS__RB_JOB_DONE_MASK,
                UVD_JRBC_STATUS__RB_JOB_DONE_MASK);

        return ret;
}

static int jpeg_v2_0_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 (enable) {
                if (!jpeg_v2_0_is_idle(handle))
                        return -EBUSY;
                jpeg_v2_0_enable_clock_gating(adev);
        } else {
                jpeg_v2_0_disable_clock_gating(adev);
        }

        return 0;
}

static int jpeg_v2_0_set_powergating_state(void *handle,
                                        enum amd_powergating_state state)
{
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
        int ret;

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

        if (state == AMD_PG_STATE_GATE)
                ret = jpeg_v2_0_stop(adev);
        else
                ret = jpeg_v2_0_start(adev);

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

        return ret;
}

static int jpeg_v2_0_set_interrupt_state(struct amdgpu_device *adev,
                                        struct amdgpu_irq_src *source,
                                        unsigned type,
                                        enum amdgpu_interrupt_state state)
{
        return 0;
}

static int jpeg_v2_0_process_interrupt(struct amdgpu_device *adev,
                                      struct amdgpu_irq_src *source,
                                      struct amdgpu_iv_entry *entry)
{
        DRM_DEBUG("IH: JPEG TRAP\n");

        switch (entry->src_id) {
        case VCN_2_0__SRCID__JPEG_DECODE:
                amdgpu_fence_process(&adev->jpeg.inst->ring_dec);
                break;
        default:
                DRM_ERROR("Unhandled interrupt: %d %d\n",
                          entry->src_id, entry->src_data[0]);
                break;
        }

        return 0;
}

static const struct amd_ip_funcs jpeg_v2_0_ip_funcs = {
        .name = "jpeg_v2_0",
        .early_init = jpeg_v2_0_early_init,
        .late_init = NULL,
        .sw_init = jpeg_v2_0_sw_init,
        .sw_fini = jpeg_v2_0_sw_fini,
        .hw_init = jpeg_v2_0_hw_init,
        .hw_fini = jpeg_v2_0_hw_fini,
        .suspend = jpeg_v2_0_suspend,
        .resume = jpeg_v2_0_resume,
        .is_idle = jpeg_v2_0_is_idle,
        .wait_for_idle = jpeg_v2_0_wait_for_idle,
        .check_soft_reset = NULL,
        .pre_soft_reset = NULL,
        .soft_reset = NULL,
        .post_soft_reset = NULL,
        .set_clockgating_state = jpeg_v2_0_set_clockgating_state,
        .set_powergating_state = jpeg_v2_0_set_powergating_state,
};

static const struct amdgpu_ring_funcs jpeg_v2_0_dec_ring_vm_funcs = {
        .type = AMDGPU_RING_TYPE_VCN_JPEG,
        .align_mask = 0xf,
        .vmhub = AMDGPU_MMHUB_0,
        .get_rptr = jpeg_v2_0_dec_ring_get_rptr,
        .get_wptr = jpeg_v2_0_dec_ring_get_wptr,
        .set_wptr = jpeg_v2_0_dec_ring_set_wptr,
        .emit_frame_size =
                SOC15_FLUSH_GPU_TLB_NUM_WREG * 6 +
                SOC15_FLUSH_GPU_TLB_NUM_REG_WAIT * 8 +
                8 + /* jpeg_v2_0_dec_ring_emit_vm_flush */
                18 + 18 + /* jpeg_v2_0_dec_ring_emit_fence x2 vm fence */
                8 + 16,
        .emit_ib_size = 22, /* jpeg_v2_0_dec_ring_emit_ib */
        .emit_ib = jpeg_v2_0_dec_ring_emit_ib,
        .emit_fence = jpeg_v2_0_dec_ring_emit_fence,
        .emit_vm_flush = jpeg_v2_0_dec_ring_emit_vm_flush,
        .test_ring = amdgpu_jpeg_dec_ring_test_ring,
        .test_ib = amdgpu_jpeg_dec_ring_test_ib,
        .insert_nop = jpeg_v2_0_dec_ring_nop,
        .insert_start = jpeg_v2_0_dec_ring_insert_start,
        .insert_end = jpeg_v2_0_dec_ring_insert_end,
        .pad_ib = amdgpu_ring_generic_pad_ib,
        .begin_use = amdgpu_jpeg_ring_begin_use,
        .end_use = amdgpu_jpeg_ring_end_use,
        .emit_wreg = jpeg_v2_0_dec_ring_emit_wreg,
        .emit_reg_wait = jpeg_v2_0_dec_ring_emit_reg_wait,
        .emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper,
};

static void jpeg_v2_0_set_dec_ring_funcs(struct amdgpu_device *adev)
{
        adev->jpeg.inst->ring_dec.funcs = &jpeg_v2_0_dec_ring_vm_funcs;
        DRM_INFO("JPEG decode is enabled in VM mode\n");
}

static const struct amdgpu_irq_src_funcs jpeg_v2_0_irq_funcs = {
        .set = jpeg_v2_0_set_interrupt_state,
        .process = jpeg_v2_0_process_interrupt,
};

static void jpeg_v2_0_set_irq_funcs(struct amdgpu_device *adev)
{
        adev->jpeg.inst->irq.num_types = 1;
        adev->jpeg.inst->irq.funcs = &jpeg_v2_0_irq_funcs;
}

const struct amdgpu_ip_block_version jpeg_v2_0_ip_block =
{
                .type = AMD_IP_BLOCK_TYPE_JPEG,
                .major = 2,
                .minor = 0,
                .rev = 0,
                .funcs = &jpeg_v2_0_ip_funcs,
};