drm/amdgpu: add VCN3.0 support for Sienna_Cichlid

With basic IP block functions and ring functions

Signed-off-by: Leo Liu <[e-mail]>
Reviewed-by: James Zhu <[e-mail]>
Acked-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/amdgpu/Makefile

···
 	vcn_v1_0.o \
 	vcn_v2_0.o \
 	vcn_v2_5.o \
+	vcn_v3_0.o \
 	amdgpu_jpeg.o \
 	jpeg_v1_0.o \
 	jpeg_v2_0.o \

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

···
 enum engine_status_constants {
 	UVD_PGFSM_STATUS__UVDM_UVDU_PWR_ON = 0x2AAAA0,
 	UVD_PGFSM_STATUS__UVDM_UVDU_PWR_ON_2_0 = 0xAAAA0,
+	UVD_PGFSM_STATUS__UVDM_UVDU_UVDLM_PWR_ON_3_0 = 0x2A2A8AA0,
 	UVD_PGFSM_CONFIG__UVDM_UVDU_PWR_ON = 0x00000002,
 	UVD_STATUS__UVD_BUSY = 0x00000004,
 	GB_ADDR_CONFIG_DEFAULT = 0x26010011,

drivers/gpu/drm/amd/amdgpu/vcn_v3_0.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 "vcn/vcn_3_0_0_offset.h"
+#include "vcn/vcn_3_0_0_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 VCN_INSTANCES_SIENNA_CICHLID	 				2
+
+static void vcn_v3_0_set_dec_ring_funcs(struct amdgpu_device *adev);
+static void vcn_v3_0_set_enc_ring_funcs(struct amdgpu_device *adev);
+static void vcn_v3_0_set_irq_funcs(struct amdgpu_device *adev);
+static int vcn_v3_0_set_powergating_state(void *handle,
+			enum amd_powergating_state state);
+
+static int amdgpu_ih_clientid_vcns[] = {
+	SOC15_IH_CLIENTID_VCN,
+	SOC15_IH_CLIENTID_VCN1
+};
+
+/**
+ * vcn_v3_0_early_init - set function pointers
+ *
+ * @handle: amdgpu_device pointer
+ *
+ * Set ring and irq function pointers
+ */
+static int vcn_v3_0_early_init(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	if (adev->asic_type == CHIP_SIENNA_CICHLID) {
+		u32 harvest;
+		int i;
+
+		adev->vcn.num_vcn_inst = VCN_INSTANCES_SIENNA_CICHLID;
+		for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
+			harvest = RREG32_SOC15(VCN, 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_v3_0_set_dec_ring_funcs(adev);
+	vcn_v3_0_set_enc_ring_funcs(adev);
+	vcn_v3_0_set_irq_funcs(adev);
+
+	return 0;
+}
+
+/**
+ * vcn_v3_0_sw_init - sw init for VCN block
+ *
+ * @handle: amdgpu_device pointer
+ *
+ * Load firmware and sw initialization
+ */
+static int vcn_v3_0_sw_init(void *handle)
+{
+	struct amdgpu_ring *ring;
+	int i, j, r;
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	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 == VCN_INSTANCES_SIENNA_CICHLID) {
+			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 (i = 0; i < adev->vcn.num_vcn_inst; i++) {
+		if (adev->vcn.harvest_config & (1 << i))
+			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[i].external.scratch9 = SOC15_REG_OFFSET(VCN, i, mmUVD_SCRATCH9);
+		adev->vcn.internal.data0 = mmUVD_GPCOM_VCPU_DATA0_INTERNAL_OFFSET;
+		adev->vcn.inst[i].external.data0 = SOC15_REG_OFFSET(VCN, i, mmUVD_GPCOM_VCPU_DATA0);
+		adev->vcn.internal.data1 = mmUVD_GPCOM_VCPU_DATA1_INTERNAL_OFFSET;
+		adev->vcn.inst[i].external.data1 = SOC15_REG_OFFSET(VCN, i, mmUVD_GPCOM_VCPU_DATA1);
+		adev->vcn.internal.cmd = mmUVD_GPCOM_VCPU_CMD_INTERNAL_OFFSET;
+		adev->vcn.inst[i].external.cmd = SOC15_REG_OFFSET(VCN, i, mmUVD_GPCOM_VCPU_CMD);
+		adev->vcn.internal.nop = mmUVD_NO_OP_INTERNAL_OFFSET;
+		adev->vcn.inst[i].external.nop = SOC15_REG_OFFSET(VCN, i, mmUVD_NO_OP);
+
+		/* VCN DEC TRAP */
+		r = amdgpu_irq_add_id(adev, amdgpu_ih_clientid_vcns[i],
+				VCN_2_0__SRCID__UVD_SYSTEM_MESSAGE_INTERRUPT, &adev->vcn.inst[i].irq);
+		if (r)
+			return r;
+
+		ring = &adev->vcn.inst[i].ring_dec;
+		ring->use_doorbell = true;
+		ring->doorbell_index = (adev->doorbell_index.vcn.vcn_ring0_1 << 1) + 8 * i;
+		sprintf(ring->name, "vcn_dec_%d", i);
+		r = amdgpu_ring_init(adev, ring, 512, &adev->vcn.inst[i].irq, 0,
+				     AMDGPU_RING_PRIO_DEFAULT);
+		if (r)
+			return r;
+
+		for (j = 0; j < adev->vcn.num_enc_rings; ++j) {
+			/* VCN ENC TRAP */
+			r = amdgpu_irq_add_id(adev, amdgpu_ih_clientid_vcns[i],
+				j + VCN_2_0__SRCID__UVD_ENC_GENERAL_PURPOSE, &adev->vcn.inst[i].irq);
+			if (r)
+				return r;
+
+			ring = &adev->vcn.inst[i].ring_enc[j];
+			ring->use_doorbell = true;
+			ring->doorbell_index = (adev->doorbell_index.vcn.vcn_ring0_1 << 1) + 2 + j + 8 * i;
+			sprintf(ring->name, "vcn_enc_%d.%d", i, j);
+			r = amdgpu_ring_init(adev, ring, 512, &adev->vcn.inst[i].irq, 0,
+					     AMDGPU_RING_PRIO_DEFAULT);
+			if (r)
+				return r;
+		}
+	}
+
+	return 0;
+}
+
+/**
+ * vcn_v3_0_sw_fini - sw fini for VCN block
+ *
+ * @handle: amdgpu_device pointer
+ *
+ * VCN suspend and free up sw allocation
+ */
+static int vcn_v3_0_sw_fini(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	int r;
+
+	r = amdgpu_vcn_suspend(adev);
+	if (r)
+		return r;
+
+	r = amdgpu_vcn_sw_fini(adev);
+
+	return r;
+}
+
+/**
+ * vcn_v3_0_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_v3_0_hw_init(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	struct amdgpu_ring *ring;
+	int i, j, r;
+
+	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
+		if (adev->vcn.harvest_config & (1 << i))
+			continue;
+
+		ring = &adev->vcn.inst[i].ring_dec;
+
+		adev->nbio.funcs->vcn_doorbell_range(adev, ring->use_doorbell,
+						     ring->doorbell_index, i);
+
+		r = amdgpu_ring_test_helper(ring);
+		if (r)
+			goto done;
+
+		for (j = 0; j < adev->vcn.num_enc_rings; ++j) {
+			ring = &adev->vcn.inst[i].ring_enc[j];
+			r = amdgpu_ring_test_helper(ring);
+			if (r)
+				goto done;
+		}
+	}
+
+done:
+	if (!r)
+		DRM_INFO("VCN decode and encode initialized successfully.\n");
+
+	return r;
+}
+
+/**
+ * vcn_v3_0_hw_fini - stop the hardware block
+ *
+ * @handle: amdgpu_device pointer
+ *
+ * Stop the VCN block, mark ring as not ready any more
+ */
+static int vcn_v3_0_hw_fini(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	struct amdgpu_ring *ring;
+	int i, j;
+
+	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
+		if (adev->vcn.harvest_config & (1 << i))
+			continue;
+
+		ring = &adev->vcn.inst[i].ring_dec;
+
+		if (RREG32_SOC15(VCN, i, mmUVD_STATUS))
+			vcn_v3_0_set_powergating_state(adev, AMD_PG_STATE_GATE);
+
+		ring->sched.ready = false;
+
+		for (j = 0; j < adev->vcn.num_enc_rings; ++j) {
+			ring = &adev->vcn.inst[i].ring_enc[j];
+			ring->sched.ready = false;
+		}
+	}
+
+	return 0;
+}
+
+/**
+ * vcn_v3_0_suspend - suspend VCN block
+ *
+ * @handle: amdgpu_device pointer
+ *
+ * HW fini and suspend VCN block
+ */
+static int vcn_v3_0_suspend(void *handle)
+{
+	int r;
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	r = vcn_v3_0_hw_fini(adev);
+	if (r)
+		return r;
+
+	r = amdgpu_vcn_suspend(adev);
+
+	return r;
+}
+
+/**
+ * vcn_v3_0_resume - resume VCN block
+ *
+ * @handle: amdgpu_device pointer
+ *
+ * Resume firmware and hw init VCN block
+ */
+static int vcn_v3_0_resume(void *handle)
+{
+	int r;
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	r = amdgpu_vcn_resume(adev);
+	if (r)
+		return r;
+
+	r = vcn_v3_0_hw_init(adev);
+
+	return r;
+}
+
+/**
+ * vcn_v3_0_mc_resume - memory controller programming
+ *
+ * @adev: amdgpu_device pointer
+ * @inst: instance number
+ *
+ * Let the VCN memory controller know it's offsets
+ */
+static void vcn_v3_0_mc_resume(struct amdgpu_device *adev, int inst)
+{
+	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) {
+		WREG32_SOC15(VCN, inst, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW,
+			(adev->firmware.ucode[AMDGPU_UCODE_ID_VCN].tmr_mc_addr_lo));
+		WREG32_SOC15(VCN, inst, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH,
+			(adev->firmware.ucode[AMDGPU_UCODE_ID_VCN].tmr_mc_addr_hi));
+		WREG32_SOC15(VCN, inst, mmUVD_VCPU_CACHE_OFFSET0, 0);
+		offset = 0;
+	} else {
+		WREG32_SOC15(VCN, inst, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_LOW,
+			lower_32_bits(adev->vcn.inst[inst].gpu_addr));
+		WREG32_SOC15(VCN, inst, mmUVD_LMI_VCPU_CACHE_64BIT_BAR_HIGH,
+			upper_32_bits(adev->vcn.inst[inst].gpu_addr));
+		offset = size;
+		/* No signed header for now from firmware
+		WREG32_SOC15(VCN, inst, mmUVD_VCPU_CACHE_OFFSET0,
+			AMDGPU_UVD_FIRMWARE_OFFSET >> 3);
+		*/
+		WREG32_SOC15(UVD, inst, mmUVD_VCPU_CACHE_OFFSET0, 0);
+	}
+	WREG32_SOC15(VCN, inst, mmUVD_VCPU_CACHE_SIZE0, size);
+
+	/* cache window 1: stack */
+	WREG32_SOC15(VCN, inst, mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_LOW,
+		lower_32_bits(adev->vcn.inst[inst].gpu_addr + offset));
+	WREG32_SOC15(VCN, inst, mmUVD_LMI_VCPU_CACHE1_64BIT_BAR_HIGH,
+		upper_32_bits(adev->vcn.inst[inst].gpu_addr + offset));
+	WREG32_SOC15(VCN, inst, mmUVD_VCPU_CACHE_OFFSET1, 0);
+	WREG32_SOC15(VCN, inst, mmUVD_VCPU_CACHE_SIZE1, AMDGPU_VCN_STACK_SIZE);
+
+	/* cache window 2: context */
+	WREG32_SOC15(VCN, inst, mmUVD_LMI_VCPU_CACHE2_64BIT_BAR_LOW,
+		lower_32_bits(adev->vcn.inst[inst].gpu_addr + offset + AMDGPU_VCN_STACK_SIZE));
+	WREG32_SOC15(VCN, inst, mmUVD_LMI_VCPU_CACHE2_64BIT_BAR_HIGH,
+		upper_32_bits(adev->vcn.inst[inst].gpu_addr + offset + AMDGPU_VCN_STACK_SIZE));
+	WREG32_SOC15(VCN, inst, mmUVD_VCPU_CACHE_OFFSET2, 0);
+	WREG32_SOC15(VCN, inst, mmUVD_VCPU_CACHE_SIZE2, AMDGPU_VCN_CONTEXT_SIZE);
+}
+
+static int vcn_v3_0_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;
+
+		/* set VCN status busy */
+		tmp = RREG32_SOC15(VCN, i, mmUVD_STATUS) | UVD_STATUS__UVD_BUSY;
+		WREG32_SOC15(VCN, i, mmUVD_STATUS, tmp);
+
+		/* enable VCPU clock */
+		WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL),
+			UVD_VCPU_CNTL__CLK_EN_MASK, ~UVD_VCPU_CNTL__CLK_EN_MASK);
+
+		/* disable master interrupt */
+		WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_MASTINT_EN), 0,
+			~UVD_MASTINT_EN__VCPU_EN_MASK);
+
+		/* setup mmUVD_LMI_CTRL */
+		tmp = RREG32_SOC15(VCN, i, mmUVD_LMI_CTRL);
+		WREG32_SOC15(VCN, i, mmUVD_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);
+
+		/* setup mmUVD_MPC_CNTL */
+		tmp = RREG32_SOC15(VCN, 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(VCN, 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(VCN, 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(VCN, 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_v3_0_mc_resume(adev, i);
+
+		/* VCN global tiling registers */
+		WREG32_SOC15(VCN, i, mmUVD_GFX10_ADDR_CONFIG,
+			adev->gfx.config.gb_addr_config);
+
+		/* enable LMI MC and UMC channels */
+		WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_LMI_CTRL2), 0,
+			~UVD_LMI_CTRL2__STALL_ARB_UMC_MASK);
+
+		tmp = RREG32_SOC15(VCN, i, mmUVD_SOFT_RESET);
+		tmp &= ~UVD_SOFT_RESET__LMI_SOFT_RESET_MASK;
+		tmp &= ~UVD_SOFT_RESET__LMI_UMC_SOFT_RESET_MASK;
+		WREG32_SOC15(VCN, i, mmUVD_SOFT_RESET, tmp);
+
+		/* unblock VCPU register access */
+		WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_RB_ARB_CTRL), 0,
+			~UVD_RB_ARB_CTRL__VCPU_DIS_MASK);
+
+		/* release VCPU reset to boot */
+		WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_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, i, mmUVD_STATUS);
+				if (status & 2)
+					break;
+				mdelay(10);
+			}
+			r = 0;
+			if (status & 2)
+				break;
+
+			DRM_ERROR("VCN[%d] decode not responding, trying to reset the VCPU!!!\n", i);
+			WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL),
+				UVD_VCPU_CNTL__BLK_RST_MASK,
+				~UVD_VCPU_CNTL__BLK_RST_MASK);
+			mdelay(10);
+			WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL), 0,
+				~UVD_VCPU_CNTL__BLK_RST_MASK);
+
+			mdelay(10);
+			r = -1;
+		}
+
+		if (r) {
+			DRM_ERROR("VCN[%d] decode not responding, giving up!!!\n", i);
+			return r;
+		}
+
+		/* enable master interrupt */
+		WREG32_P(SOC15_REG_OFFSET(VCN, 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(VCN, i, mmUVD_STATUS), 0,
+			~(2 << UVD_STATUS__VCPU_REPORT__SHIFT));
+
+		WREG32_SOC15(VCN, 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(VCN, i, mmUVD_RBC_RB_CNTL, tmp);
+
+		/* programm the RB_BASE for ring buffer */
+		WREG32_SOC15(VCN, i, mmUVD_LMI_RBC_RB_64BIT_BAR_LOW,
+			lower_32_bits(ring->gpu_addr));
+		WREG32_SOC15(VCN, 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(VCN, i, mmUVD_RBC_RB_RPTR, 0);
+
+		ring->wptr = RREG32_SOC15(VCN, i, mmUVD_RBC_RB_RPTR);
+		WREG32_SOC15(VCN, i, mmUVD_RBC_RB_WPTR,
+			lower_32_bits(ring->wptr));
+		ring = &adev->vcn.inst[i].ring_enc[0];
+		WREG32_SOC15(VCN, i, mmUVD_RB_RPTR, lower_32_bits(ring->wptr));
+		WREG32_SOC15(VCN, i, mmUVD_RB_WPTR, lower_32_bits(ring->wptr));
+		WREG32_SOC15(VCN, i, mmUVD_RB_BASE_LO, ring->gpu_addr);
+		WREG32_SOC15(VCN, i, mmUVD_RB_BASE_HI, upper_32_bits(ring->gpu_addr));
+		WREG32_SOC15(VCN, i, mmUVD_RB_SIZE, ring->ring_size / 4);
+
+		ring = &adev->vcn.inst[i].ring_enc[1];
+		WREG32_SOC15(VCN, i, mmUVD_RB_RPTR2, lower_32_bits(ring->wptr));
+		WREG32_SOC15(VCN, i, mmUVD_RB_WPTR2, lower_32_bits(ring->wptr));
+		WREG32_SOC15(VCN, i, mmUVD_RB_BASE_LO2, ring->gpu_addr);
+		WREG32_SOC15(VCN, i, mmUVD_RB_BASE_HI2, upper_32_bits(ring->gpu_addr));
+		WREG32_SOC15(VCN, i, mmUVD_RB_SIZE2, ring->ring_size / 4);
+	}
+
+	return 0;
+}
+
+static int vcn_v3_0_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;
+
+		/* 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;
+
+		/* disable 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(VCN, 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(VCN, i, mmUVD_VCPU_CNTL),
+			UVD_VCPU_CNTL__BLK_RST_MASK,
+			~UVD_VCPU_CNTL__BLK_RST_MASK);
+
+		/* disable VCPU clock */
+		WREG32_P(SOC15_REG_OFFSET(VCN, i, mmUVD_VCPU_CNTL), 0,
+			~(UVD_VCPU_CNTL__CLK_EN_MASK));
+
+		/* apply soft reset */
+		tmp = RREG32_SOC15(VCN, i, mmUVD_SOFT_RESET);
+		tmp |= UVD_SOFT_RESET__LMI_UMC_SOFT_RESET_MASK;
+		WREG32_SOC15(VCN, i, mmUVD_SOFT_RESET, tmp);
+		tmp = RREG32_SOC15(VCN, i, mmUVD_SOFT_RESET);
+		tmp |= UVD_SOFT_RESET__LMI_SOFT_RESET_MASK;
+		WREG32_SOC15(VCN, i, mmUVD_SOFT_RESET, tmp);
+
+		/* clear status */
+		WREG32_SOC15(VCN, i, mmUVD_STATUS, 0);
+	}
+
+	if (adev->pm.dpm_enabled)
+		amdgpu_dpm_enable_uvd(adev, false);
+
+	return 0;
+}
+
+/**
+ * vcn_v3_0_dec_ring_get_rptr - get read pointer
+ *
+ * @ring: amdgpu_ring pointer
+ *
+ * Returns the current hardware read pointer
+ */
+static uint64_t vcn_v3_0_dec_ring_get_rptr(struct amdgpu_ring *ring)
+{
+	struct amdgpu_device *adev = ring->adev;
+
+	return RREG32_SOC15(VCN, ring->me, mmUVD_RBC_RB_RPTR);
+}
+
+/**
+ * vcn_v3_0_dec_ring_get_wptr - get write pointer
+ *
+ * @ring: amdgpu_ring pointer
+ *
+ * Returns the current hardware write pointer
+ */
+static uint64_t vcn_v3_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(VCN, ring->me, mmUVD_RBC_RB_WPTR);
+}
+
+/**
+ * vcn_v3_0_dec_ring_set_wptr - set write pointer
+ *
+ * @ring: amdgpu_ring pointer
+ *
+ * Commits the write pointer to the hardware
+ */
+static void vcn_v3_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(VCN, ring->me, mmUVD_RBC_RB_WPTR, lower_32_bits(ring->wptr));
+	}
+}
+
+static const struct amdgpu_ring_funcs vcn_v3_0_dec_ring_vm_funcs = {
+	.type = AMDGPU_RING_TYPE_VCN_DEC,
+	.align_mask = 0xf,
+	.vmhub = AMDGPU_MMHUB_0,
+	.get_rptr = vcn_v3_0_dec_ring_get_rptr,
+	.get_wptr = vcn_v3_0_dec_ring_get_wptr,
+	.set_wptr = vcn_v3_0_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 = amdgpu_vcn_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_v3_0_enc_ring_get_rptr - get enc read pointer
+ *
+ * @ring: amdgpu_ring pointer
+ *
+ * Returns the current hardware enc read pointer
+ */
+static uint64_t vcn_v3_0_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(VCN, ring->me, mmUVD_RB_RPTR);
+	else
+		return RREG32_SOC15(VCN, ring->me, mmUVD_RB_RPTR2);
+}
+
+/**
+ * vcn_v3_0_enc_ring_get_wptr - get enc write pointer
+ *
+ * @ring: amdgpu_ring pointer
+ *
+ * Returns the current hardware enc write pointer
+ */
+static uint64_t vcn_v3_0_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(VCN, ring->me, mmUVD_RB_WPTR);
+	} else {
+		if (ring->use_doorbell)
+			return adev->wb.wb[ring->wptr_offs];
+		else
+			return RREG32_SOC15(VCN, ring->me, mmUVD_RB_WPTR2);
+	}
+}
+
+/**
+ * vcn_v3_0_enc_ring_set_wptr - set enc write pointer
+ *
+ * @ring: amdgpu_ring pointer
+ *
+ * Commits the enc write pointer to the hardware
+ */
+static void vcn_v3_0_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(VCN, 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(VCN, ring->me, mmUVD_RB_WPTR2, lower_32_bits(ring->wptr));
+		}
+	}
+}
+
+static const struct amdgpu_ring_funcs vcn_v3_0_enc_ring_vm_funcs = {
+	.type = AMDGPU_RING_TYPE_VCN_ENC,
+	.align_mask = 0x3f,
+	.nop = VCN_ENC_CMD_NO_OP,
+	.vmhub = AMDGPU_MMHUB_0,
+	.get_rptr = vcn_v3_0_enc_ring_get_rptr,
+	.get_wptr = vcn_v3_0_enc_ring_get_wptr,
+	.set_wptr = vcn_v3_0_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_v3_0_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_v3_0_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_v3_0_set_enc_ring_funcs(struct amdgpu_device *adev)
+{
+	int i, j;
+
+	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
+		if (adev->vcn.harvest_config & (1 << i))
+			continue;
+
+		for (j = 0; j < adev->vcn.num_enc_rings; ++j) {
+			adev->vcn.inst[i].ring_enc[j].funcs = &vcn_v3_0_enc_ring_vm_funcs;
+			adev->vcn.inst[i].ring_enc[j].me = i;
+		}
+		DRM_INFO("VCN(%d) encode is enabled in VM mode\n", i);
+	}
+}
+
+static bool vcn_v3_0_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_v3_0_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_v3_0_set_clockgating_state(void *handle,
+					  enum amd_clockgating_state state)
+{
+	return 0;
+}
+
+static int vcn_v3_0_set_powergating_state(void *handle,
+					  enum amd_powergating_state state)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	int ret;
+
+	if(state == adev->vcn.cur_state)
+		return 0;
+
+	if (state == AMD_PG_STATE_GATE)
+		ret = vcn_v3_0_stop(adev);
+	else
+		ret = vcn_v3_0_start(adev);
+
+	if(!ret)
+		adev->vcn.cur_state = state;
+
+	return ret;
+}
+
+static int vcn_v3_0_set_interrupt_state(struct amdgpu_device *adev,
+					struct amdgpu_irq_src *source,
+					unsigned type,
+					enum amdgpu_interrupt_state state)
+{
+	return 0;
+}
+
+static int vcn_v3_0_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_v3_0_irq_funcs = {
+	.set = vcn_v3_0_set_interrupt_state,
+	.process = vcn_v3_0_process_interrupt,
+};
+
+static void vcn_v3_0_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_v3_0_irq_funcs;
+	}
+}
+
+static const struct amd_ip_funcs vcn_v3_0_ip_funcs = {
+	.name = "vcn_v3_0",
+	.early_init = vcn_v3_0_early_init,
+	.late_init = NULL,
+	.sw_init = vcn_v3_0_sw_init,
+	.sw_fini = vcn_v3_0_sw_fini,
+	.hw_init = vcn_v3_0_hw_init,
+	.hw_fini = vcn_v3_0_hw_fini,
+	.suspend = vcn_v3_0_suspend,
+	.resume = vcn_v3_0_resume,
+	.is_idle = vcn_v3_0_is_idle,
+	.wait_for_idle = vcn_v3_0_wait_for_idle,
+	.check_soft_reset = NULL,
+	.pre_soft_reset = NULL,
+	.soft_reset = NULL,
+	.post_soft_reset = NULL,
+	.set_clockgating_state = vcn_v3_0_set_clockgating_state,
+	.set_powergating_state = vcn_v3_0_set_powergating_state,
+};
+
+const struct amdgpu_ip_block_version vcn_v3_0_ip_block =
+{
+	.type = AMD_IP_BLOCK_TYPE_VCN,
+	.major = 3,
+	.minor = 0,
+	.rev = 0,
+	.funcs = &vcn_v3_0_ip_funcs,
+};

drivers/gpu/drm/amd/amdgpu/vcn_v3_0.h

···
+/*
+ * 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.
+ *
+ */
+
+#ifndef __VCN_V3_0_H__
+#define __VCN_V3_0_H__
+
+extern const struct amdgpu_ip_block_version vcn_v3_0_ip_block;
+
+#endif /* __VCN_V3_0_H__ */