Adding upstream version 6.1.76.upstream/6.1.76upstream

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

1 files changed, 1391 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
new file mode 100644
index 000000000..6eac64949
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -0,0 +1,1391 @@
+/*
+ * Copyright 2011 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ */
+/*
+ * Authors:
+ *    Christian König <deathsimple@vodafone.de>
+ */
+
+#include <linux/firmware.h>
+#include <linux/module.h>
+
+#include <drm/drm.h>
+#include <drm/drm_drv.h>
+
+#include "amdgpu.h"
+#include "amdgpu_pm.h"
+#include "amdgpu_uvd.h"
+#include "amdgpu_cs.h"
+#include "cikd.h"
+#include "uvd/uvd_4_2_d.h"
+
+#include "amdgpu_ras.h"
+
+/* 1 second timeout */
+#define UVD_IDLE_TIMEOUT	msecs_to_jiffies(1000)
+
+/* Firmware versions for VI */
+#define FW_1_65_10	((1 << 24) | (65 << 16) | (10 << 8))
+#define FW_1_87_11	((1 << 24) | (87 << 16) | (11 << 8))
+#define FW_1_87_12	((1 << 24) | (87 << 16) | (12 << 8))
+#define FW_1_37_15	((1 << 24) | (37 << 16) | (15 << 8))
+
+/* Polaris10/11 firmware version */
+#define FW_1_66_16	((1 << 24) | (66 << 16) | (16 << 8))
+
+/* Firmware Names */
+#ifdef CONFIG_DRM_AMDGPU_SI
+#define FIRMWARE_TAHITI		"amdgpu/tahiti_uvd.bin"
+#define FIRMWARE_VERDE		"amdgpu/verde_uvd.bin"
+#define FIRMWARE_PITCAIRN	"amdgpu/pitcairn_uvd.bin"
+#define FIRMWARE_OLAND		"amdgpu/oland_uvd.bin"
+#endif
+#ifdef CONFIG_DRM_AMDGPU_CIK
+#define FIRMWARE_BONAIRE	"amdgpu/bonaire_uvd.bin"
+#define FIRMWARE_KABINI	"amdgpu/kabini_uvd.bin"
+#define FIRMWARE_KAVERI	"amdgpu/kaveri_uvd.bin"
+#define FIRMWARE_HAWAII	"amdgpu/hawaii_uvd.bin"
+#define FIRMWARE_MULLINS	"amdgpu/mullins_uvd.bin"
+#endif
+#define FIRMWARE_TONGA		"amdgpu/tonga_uvd.bin"
+#define FIRMWARE_CARRIZO	"amdgpu/carrizo_uvd.bin"
+#define FIRMWARE_FIJI		"amdgpu/fiji_uvd.bin"
+#define FIRMWARE_STONEY		"amdgpu/stoney_uvd.bin"
+#define FIRMWARE_POLARIS10	"amdgpu/polaris10_uvd.bin"
+#define FIRMWARE_POLARIS11	"amdgpu/polaris11_uvd.bin"
+#define FIRMWARE_POLARIS12	"amdgpu/polaris12_uvd.bin"
+#define FIRMWARE_VEGAM		"amdgpu/vegam_uvd.bin"
+
+#define FIRMWARE_VEGA10		"amdgpu/vega10_uvd.bin"
+#define FIRMWARE_VEGA12		"amdgpu/vega12_uvd.bin"
+#define FIRMWARE_VEGA20		"amdgpu/vega20_uvd.bin"
+
+/* These are common relative offsets for all asics, from uvd_7_0_offset.h,  */
+#define UVD_GPCOM_VCPU_CMD		0x03c3
+#define UVD_GPCOM_VCPU_DATA0	0x03c4
+#define UVD_GPCOM_VCPU_DATA1	0x03c5
+#define UVD_NO_OP				0x03ff
+#define UVD_BASE_SI				0x3800
+
+/*
+ * amdgpu_uvd_cs_ctx - Command submission parser context
+ *
+ * Used for emulating virtual memory support on UVD 4.2.
+ */
+struct amdgpu_uvd_cs_ctx {
+	struct amdgpu_cs_parser *parser;
+	unsigned reg, count;
+	unsigned data0, data1;
+	unsigned idx;
+	struct amdgpu_ib *ib;
+
+	/* does the IB has a msg command */
+	bool has_msg_cmd;
+
+	/* minimum buffer sizes */
+	unsigned *buf_sizes;
+};
+
+#ifdef CONFIG_DRM_AMDGPU_SI
+MODULE_FIRMWARE(FIRMWARE_TAHITI);
+MODULE_FIRMWARE(FIRMWARE_VERDE);
+MODULE_FIRMWARE(FIRMWARE_PITCAIRN);
+MODULE_FIRMWARE(FIRMWARE_OLAND);
+#endif
+#ifdef CONFIG_DRM_AMDGPU_CIK
+MODULE_FIRMWARE(FIRMWARE_BONAIRE);
+MODULE_FIRMWARE(FIRMWARE_KABINI);
+MODULE_FIRMWARE(FIRMWARE_KAVERI);
+MODULE_FIRMWARE(FIRMWARE_HAWAII);
+MODULE_FIRMWARE(FIRMWARE_MULLINS);
+#endif
+MODULE_FIRMWARE(FIRMWARE_TONGA);
+MODULE_FIRMWARE(FIRMWARE_CARRIZO);
+MODULE_FIRMWARE(FIRMWARE_FIJI);
+MODULE_FIRMWARE(FIRMWARE_STONEY);
+MODULE_FIRMWARE(FIRMWARE_POLARIS10);
+MODULE_FIRMWARE(FIRMWARE_POLARIS11);
+MODULE_FIRMWARE(FIRMWARE_POLARIS12);
+MODULE_FIRMWARE(FIRMWARE_VEGAM);
+
+MODULE_FIRMWARE(FIRMWARE_VEGA10);
+MODULE_FIRMWARE(FIRMWARE_VEGA12);
+MODULE_FIRMWARE(FIRMWARE_VEGA20);
+
+static void amdgpu_uvd_idle_work_handler(struct work_struct *work);
+static void amdgpu_uvd_force_into_uvd_segment(struct amdgpu_bo *abo);
+
+static int amdgpu_uvd_create_msg_bo_helper(struct amdgpu_device *adev,
+					   uint32_t size,
+					   struct amdgpu_bo **bo_ptr)
+{
+	struct ttm_operation_ctx ctx = { true, false };
+	struct amdgpu_bo *bo = NULL;
+	void *addr;
+	int r;
+
+	r = amdgpu_bo_create_reserved(adev, size, PAGE_SIZE,
+				      AMDGPU_GEM_DOMAIN_GTT,
+				      &bo, NULL, &addr);
+	if (r)
+		return r;
+
+	if (adev->uvd.address_64_bit)
+		goto succ;
+
+	amdgpu_bo_kunmap(bo);
+	amdgpu_bo_unpin(bo);
+	amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_VRAM);
+	amdgpu_uvd_force_into_uvd_segment(bo);
+	r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
+	if (r)
+		goto err;
+	r = amdgpu_bo_pin(bo, AMDGPU_GEM_DOMAIN_VRAM);
+	if (r)
+		goto err_pin;
+	r = amdgpu_bo_kmap(bo, &addr);
+	if (r)
+		goto err_kmap;
+succ:
+	amdgpu_bo_unreserve(bo);
+	*bo_ptr = bo;
+	return 0;
+err_kmap:
+	amdgpu_bo_unpin(bo);
+err_pin:
+err:
+	amdgpu_bo_unreserve(bo);
+	amdgpu_bo_unref(&bo);
+	return r;
+}
+
+int amdgpu_uvd_sw_init(struct amdgpu_device *adev)
+{
+	unsigned long bo_size;
+	const char *fw_name;
+	const struct common_firmware_header *hdr;
+	unsigned family_id;
+	int i, j, r;
+
+	INIT_DELAYED_WORK(&adev->uvd.idle_work, amdgpu_uvd_idle_work_handler);
+
+	switch (adev->asic_type) {
+#ifdef CONFIG_DRM_AMDGPU_SI
+	case CHIP_TAHITI:
+		fw_name = FIRMWARE_TAHITI;
+		break;
+	case CHIP_VERDE:
+		fw_name = FIRMWARE_VERDE;
+		break;
+	case CHIP_PITCAIRN:
+		fw_name = FIRMWARE_PITCAIRN;
+		break;
+	case CHIP_OLAND:
+		fw_name = FIRMWARE_OLAND;
+		break;
+#endif
+#ifdef CONFIG_DRM_AMDGPU_CIK
+	case CHIP_BONAIRE:
+		fw_name = FIRMWARE_BONAIRE;
+		break;
+	case CHIP_KABINI:
+		fw_name = FIRMWARE_KABINI;
+		break;
+	case CHIP_KAVERI:
+		fw_name = FIRMWARE_KAVERI;
+		break;
+	case CHIP_HAWAII:
+		fw_name = FIRMWARE_HAWAII;
+		break;
+	case CHIP_MULLINS:
+		fw_name = FIRMWARE_MULLINS;
+		break;
+#endif
+	case CHIP_TONGA:
+		fw_name = FIRMWARE_TONGA;
+		break;
+	case CHIP_FIJI:
+		fw_name = FIRMWARE_FIJI;
+		break;
+	case CHIP_CARRIZO:
+		fw_name = FIRMWARE_CARRIZO;
+		break;
+	case CHIP_STONEY:
+		fw_name = FIRMWARE_STONEY;
+		break;
+	case CHIP_POLARIS10:
+		fw_name = FIRMWARE_POLARIS10;
+		break;
+	case CHIP_POLARIS11:
+		fw_name = FIRMWARE_POLARIS11;
+		break;
+	case CHIP_POLARIS12:
+		fw_name = FIRMWARE_POLARIS12;
+		break;
+	case CHIP_VEGA10:
+		fw_name = FIRMWARE_VEGA10;
+		break;
+	case CHIP_VEGA12:
+		fw_name = FIRMWARE_VEGA12;
+		break;
+	case CHIP_VEGAM:
+		fw_name = FIRMWARE_VEGAM;
+		break;
+	case CHIP_VEGA20:
+		fw_name = FIRMWARE_VEGA20;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	r = request_firmware(&adev->uvd.fw, fw_name, adev->dev);
+	if (r) {
+		dev_err(adev->dev, "amdgpu_uvd: Can't load firmware \"%s\"\n",
+			fw_name);
+		return r;
+	}
+
+	r = amdgpu_ucode_validate(adev->uvd.fw);
+	if (r) {
+		dev_err(adev->dev, "amdgpu_uvd: Can't validate firmware \"%s\"\n",
+			fw_name);
+		release_firmware(adev->uvd.fw);
+		adev->uvd.fw = NULL;
+		return r;
+	}
+
+	/* Set the default UVD handles that the firmware can handle */
+	adev->uvd.max_handles = AMDGPU_DEFAULT_UVD_HANDLES;
+
+	hdr = (const struct common_firmware_header *)adev->uvd.fw->data;
+	family_id = le32_to_cpu(hdr->ucode_version) & 0xff;
+
+	if (adev->asic_type < CHIP_VEGA20) {
+		unsigned version_major, version_minor;
+
+		version_major = (le32_to_cpu(hdr->ucode_version) >> 24) & 0xff;
+		version_minor = (le32_to_cpu(hdr->ucode_version) >> 8) & 0xff;
+		DRM_INFO("Found UVD firmware Version: %u.%u Family ID: %u\n",
+			version_major, version_minor, family_id);
+
+		/*
+		 * Limit the number of UVD handles depending on microcode major
+		 * and minor versions. The firmware version which has 40 UVD
+		 * instances support is 1.80. So all subsequent versions should
+		 * also have the same support.
+		 */
+		if ((version_major > 0x01) ||
+		    ((version_major == 0x01) && (version_minor >= 0x50)))
+			adev->uvd.max_handles = AMDGPU_MAX_UVD_HANDLES;
+
+		adev->uvd.fw_version = ((version_major << 24) | (version_minor << 16) |
+					(family_id << 8));
+
+		if ((adev->asic_type == CHIP_POLARIS10 ||
+		     adev->asic_type == CHIP_POLARIS11) &&
+		    (adev->uvd.fw_version < FW_1_66_16))
+			DRM_ERROR("POLARIS10/11 UVD firmware version %u.%u is too old.\n",
+				  version_major, version_minor);
+	} else {
+		unsigned int enc_major, enc_minor, dec_minor;
+
+		dec_minor = (le32_to_cpu(hdr->ucode_version) >> 8) & 0xff;
+		enc_minor = (le32_to_cpu(hdr->ucode_version) >> 24) & 0x3f;
+		enc_major = (le32_to_cpu(hdr->ucode_version) >> 30) & 0x3;
+		DRM_INFO("Found UVD firmware ENC: %u.%u DEC: .%u Family ID: %u\n",
+			enc_major, enc_minor, dec_minor, family_id);
+
+		adev->uvd.max_handles = AMDGPU_MAX_UVD_HANDLES;
+
+		adev->uvd.fw_version = le32_to_cpu(hdr->ucode_version);
+	}
+
+	bo_size = AMDGPU_UVD_STACK_SIZE + AMDGPU_UVD_HEAP_SIZE
+		  +  AMDGPU_UVD_SESSION_SIZE * adev->uvd.max_handles;
+	if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP)
+		bo_size += AMDGPU_GPU_PAGE_ALIGN(le32_to_cpu(hdr->ucode_size_bytes) + 8);
+
+	for (j = 0; j < adev->uvd.num_uvd_inst; j++) {
+		if (adev->uvd.harvest_config & (1 << j))
+			continue;
+		r = amdgpu_bo_create_kernel(adev, bo_size, PAGE_SIZE,
+					    AMDGPU_GEM_DOMAIN_VRAM, &adev->uvd.inst[j].vcpu_bo,
+					    &adev->uvd.inst[j].gpu_addr, &adev->uvd.inst[j].cpu_addr);
+		if (r) {
+			dev_err(adev->dev, "(%d) failed to allocate UVD bo\n", r);
+			return r;
+		}
+	}
+
+	for (i = 0; i < adev->uvd.max_handles; ++i) {
+		atomic_set(&adev->uvd.handles[i], 0);
+		adev->uvd.filp[i] = NULL;
+	}
+
+	/* from uvd v5.0 HW addressing capacity increased to 64 bits */
+	if (!amdgpu_device_ip_block_version_cmp(adev, AMD_IP_BLOCK_TYPE_UVD, 5, 0))
+		adev->uvd.address_64_bit = true;
+
+	r = amdgpu_uvd_create_msg_bo_helper(adev, 128 << 10, &adev->uvd.ib_bo);
+	if (r)
+		return r;
+
+	switch (adev->asic_type) {
+	case CHIP_TONGA:
+		adev->uvd.use_ctx_buf = adev->uvd.fw_version >= FW_1_65_10;
+		break;
+	case CHIP_CARRIZO:
+		adev->uvd.use_ctx_buf = adev->uvd.fw_version >= FW_1_87_11;
+		break;
+	case CHIP_FIJI:
+		adev->uvd.use_ctx_buf = adev->uvd.fw_version >= FW_1_87_12;
+		break;
+	case CHIP_STONEY:
+		adev->uvd.use_ctx_buf = adev->uvd.fw_version >= FW_1_37_15;
+		break;
+	default:
+		adev->uvd.use_ctx_buf = adev->asic_type >= CHIP_POLARIS10;
+	}
+
+	return 0;
+}
+
+int amdgpu_uvd_sw_fini(struct amdgpu_device *adev)
+{
+	void *addr = amdgpu_bo_kptr(adev->uvd.ib_bo);
+	int i, j;
+
+	drm_sched_entity_destroy(&adev->uvd.entity);
+
+	for (j = 0; j < adev->uvd.num_uvd_inst; ++j) {
+		if (adev->uvd.harvest_config & (1 << j))
+			continue;
+		kvfree(adev->uvd.inst[j].saved_bo);
+
+		amdgpu_bo_free_kernel(&adev->uvd.inst[j].vcpu_bo,
+				      &adev->uvd.inst[j].gpu_addr,
+				      (void **)&adev->uvd.inst[j].cpu_addr);
+
+		amdgpu_ring_fini(&adev->uvd.inst[j].ring);
+
+		for (i = 0; i < AMDGPU_MAX_UVD_ENC_RINGS; ++i)
+			amdgpu_ring_fini(&adev->uvd.inst[j].ring_enc[i]);
+	}
+	amdgpu_bo_free_kernel(&adev->uvd.ib_bo, NULL, &addr);
+	release_firmware(adev->uvd.fw);
+
+	return 0;
+}
+
+/**
+ * amdgpu_uvd_entity_init - init entity
+ *
+ * @adev: amdgpu_device pointer
+ *
+ */
+int amdgpu_uvd_entity_init(struct amdgpu_device *adev)
+{
+	struct amdgpu_ring *ring;
+	struct drm_gpu_scheduler *sched;
+	int r;
+
+	ring = &adev->uvd.inst[0].ring;
+	sched = &ring->sched;
+	r = drm_sched_entity_init(&adev->uvd.entity, DRM_SCHED_PRIORITY_NORMAL,
+				  &sched, 1, NULL);
+	if (r) {
+		DRM_ERROR("Failed setting up UVD kernel entity.\n");
+		return r;
+	}
+
+	return 0;
+}
+
+int amdgpu_uvd_suspend(struct amdgpu_device *adev)
+{
+	unsigned size;
+	void *ptr;
+	int i, j, idx;
+	bool in_ras_intr = amdgpu_ras_intr_triggered();
+
+	cancel_delayed_work_sync(&adev->uvd.idle_work);
+
+	/* only valid for physical mode */
+	if (adev->asic_type < CHIP_POLARIS10) {
+		for (i = 0; i < adev->uvd.max_handles; ++i)
+			if (atomic_read(&adev->uvd.handles[i]))
+				break;
+
+		if (i == adev->uvd.max_handles)
+			return 0;
+	}
+
+	for (j = 0; j < adev->uvd.num_uvd_inst; ++j) {
+		if (adev->uvd.harvest_config & (1 << j))
+			continue;
+		if (adev->uvd.inst[j].vcpu_bo == NULL)
+			continue;
+
+		size = amdgpu_bo_size(adev->uvd.inst[j].vcpu_bo);
+		ptr = adev->uvd.inst[j].cpu_addr;
+
+		adev->uvd.inst[j].saved_bo = kvmalloc(size, GFP_KERNEL);
+		if (!adev->uvd.inst[j].saved_bo)
+			return -ENOMEM;
+
+		if (drm_dev_enter(adev_to_drm(adev), &idx)) {
+			/* re-write 0 since err_event_athub will corrupt VCPU buffer */
+			if (in_ras_intr)
+				memset(adev->uvd.inst[j].saved_bo, 0, size);
+			else
+				memcpy_fromio(adev->uvd.inst[j].saved_bo, ptr, size);
+
+			drm_dev_exit(idx);
+		}
+	}
+
+	if (in_ras_intr)
+		DRM_WARN("UVD VCPU state may lost due to RAS ERREVENT_ATHUB_INTERRUPT\n");
+
+	return 0;
+}
+
+int amdgpu_uvd_resume(struct amdgpu_device *adev)
+{
+	unsigned size;
+	void *ptr;
+	int i, idx;
+
+	for (i = 0; i < adev->uvd.num_uvd_inst; i++) {
+		if (adev->uvd.harvest_config & (1 << i))
+			continue;
+		if (adev->uvd.inst[i].vcpu_bo == NULL)
+			return -EINVAL;
+
+		size = amdgpu_bo_size(adev->uvd.inst[i].vcpu_bo);
+		ptr = adev->uvd.inst[i].cpu_addr;
+
+		if (adev->uvd.inst[i].saved_bo != NULL) {
+			if (drm_dev_enter(adev_to_drm(adev), &idx)) {
+				memcpy_toio(ptr, adev->uvd.inst[i].saved_bo, size);
+				drm_dev_exit(idx);
+			}
+			kvfree(adev->uvd.inst[i].saved_bo);
+			adev->uvd.inst[i].saved_bo = NULL;
+		} else {
+			const struct common_firmware_header *hdr;
+			unsigned offset;
+
+			hdr = (const struct common_firmware_header *)adev->uvd.fw->data;
+			if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP) {
+				offset = le32_to_cpu(hdr->ucode_array_offset_bytes);
+				if (drm_dev_enter(adev_to_drm(adev), &idx)) {
+					memcpy_toio(adev->uvd.inst[i].cpu_addr, adev->uvd.fw->data + offset,
+						    le32_to_cpu(hdr->ucode_size_bytes));
+					drm_dev_exit(idx);
+				}
+				size -= le32_to_cpu(hdr->ucode_size_bytes);
+				ptr += le32_to_cpu(hdr->ucode_size_bytes);
+			}
+			memset_io(ptr, 0, size);
+			/* to restore uvd fence seq */
+			amdgpu_fence_driver_force_completion(&adev->uvd.inst[i].ring);
+		}
+	}
+	return 0;
+}
+
+void amdgpu_uvd_free_handles(struct amdgpu_device *adev, struct drm_file *filp)
+{
+	struct amdgpu_ring *ring = &adev->uvd.inst[0].ring;
+	int i, r;
+
+	for (i = 0; i < adev->uvd.max_handles; ++i) {
+		uint32_t handle = atomic_read(&adev->uvd.handles[i]);
+
+		if (handle != 0 && adev->uvd.filp[i] == filp) {
+			struct dma_fence *fence;
+
+			r = amdgpu_uvd_get_destroy_msg(ring, handle, false,
+						       &fence);
+			if (r) {
+				DRM_ERROR("Error destroying UVD %d!\n", r);
+				continue;
+			}
+
+			dma_fence_wait(fence, false);
+			dma_fence_put(fence);
+
+			adev->uvd.filp[i] = NULL;
+			atomic_set(&adev->uvd.handles[i], 0);
+		}
+	}
+}
+
+static void amdgpu_uvd_force_into_uvd_segment(struct amdgpu_bo *abo)
+{
+	int i;
+	for (i = 0; i < abo->placement.num_placement; ++i) {
+		abo->placements[i].fpfn = 0 >> PAGE_SHIFT;
+		abo->placements[i].lpfn = (256 * 1024 * 1024) >> PAGE_SHIFT;
+	}
+}
+
+static u64 amdgpu_uvd_get_addr_from_ctx(struct amdgpu_uvd_cs_ctx *ctx)
+{
+	uint32_t lo, hi;
+	uint64_t addr;
+
+	lo = amdgpu_ib_get_value(ctx->ib, ctx->data0);
+	hi = amdgpu_ib_get_value(ctx->ib, ctx->data1);
+	addr = ((uint64_t)lo) | (((uint64_t)hi) << 32);
+
+	return addr;
+}
+
+/**
+ * amdgpu_uvd_cs_pass1 - first parsing round
+ *
+ * @ctx: UVD parser context
+ *
+ * Make sure UVD message and feedback buffers are in VRAM and
+ * nobody is violating an 256MB boundary.
+ */
+static int amdgpu_uvd_cs_pass1(struct amdgpu_uvd_cs_ctx *ctx)
+{
+	struct ttm_operation_ctx tctx = { false, false };
+	struct amdgpu_bo_va_mapping *mapping;
+	struct amdgpu_bo *bo;
+	uint32_t cmd;
+	uint64_t addr = amdgpu_uvd_get_addr_from_ctx(ctx);
+	int r = 0;
+
+	r = amdgpu_cs_find_mapping(ctx->parser, addr, &bo, &mapping);
+	if (r) {
+		DRM_ERROR("Can't find BO for addr 0x%08Lx\n", addr);
+		return r;
+	}
+
+	if (!ctx->parser->adev->uvd.address_64_bit) {
+		/* check if it's a message or feedback command */
+		cmd = amdgpu_ib_get_value(ctx->ib, ctx->idx) >> 1;
+		if (cmd == 0x0 || cmd == 0x3) {
+			/* yes, force it into VRAM */
+			uint32_t domain = AMDGPU_GEM_DOMAIN_VRAM;
+			amdgpu_bo_placement_from_domain(bo, domain);
+		}
+		amdgpu_uvd_force_into_uvd_segment(bo);
+
+		r = ttm_bo_validate(&bo->tbo, &bo->placement, &tctx);
+	}
+
+	return r;
+}
+
+/**
+ * amdgpu_uvd_cs_msg_decode - handle UVD decode message
+ *
+ * @adev: amdgpu_device pointer
+ * @msg: pointer to message structure
+ * @buf_sizes: placeholder to put the different buffer lengths
+ *
+ * Peek into the decode message and calculate the necessary buffer sizes.
+ */
+static int amdgpu_uvd_cs_msg_decode(struct amdgpu_device *adev, uint32_t *msg,
+	unsigned buf_sizes[])
+{
+	unsigned stream_type = msg[4];
+	unsigned width = msg[6];
+	unsigned height = msg[7];
+	unsigned dpb_size = msg[9];
+	unsigned pitch = msg[28];
+	unsigned level = msg[57];
+
+	unsigned width_in_mb = width / 16;
+	unsigned height_in_mb = ALIGN(height / 16, 2);
+	unsigned fs_in_mb = width_in_mb * height_in_mb;
+
+	unsigned image_size, tmp, min_dpb_size, num_dpb_buffer;
+	unsigned min_ctx_size = ~0;
+
+	image_size = width * height;
+	image_size += image_size / 2;
+	image_size = ALIGN(image_size, 1024);
+
+	switch (stream_type) {
+	case 0: /* H264 */
+		switch(level) {
+		case 30:
+			num_dpb_buffer = 8100 / fs_in_mb;
+			break;
+		case 31:
+			num_dpb_buffer = 18000 / fs_in_mb;
+			break;
+		case 32:
+			num_dpb_buffer = 20480 / fs_in_mb;
+			break;
+		case 41:
+			num_dpb_buffer = 32768 / fs_in_mb;
+			break;
+		case 42:
+			num_dpb_buffer = 34816 / fs_in_mb;
+			break;
+		case 50:
+			num_dpb_buffer = 110400 / fs_in_mb;
+			break;
+		case 51:
+			num_dpb_buffer = 184320 / fs_in_mb;
+			break;
+		default:
+			num_dpb_buffer = 184320 / fs_in_mb;
+			break;
+		}
+		num_dpb_buffer++;
+		if (num_dpb_buffer > 17)
+			num_dpb_buffer = 17;
+
+		/* reference picture buffer */
+		min_dpb_size = image_size * num_dpb_buffer;
+
+		/* macroblock context buffer */
+		min_dpb_size += width_in_mb * height_in_mb * num_dpb_buffer * 192;
+
+		/* IT surface buffer */
+		min_dpb_size += width_in_mb * height_in_mb * 32;
+		break;
+
+	case 1: /* VC1 */
+
+		/* reference picture buffer */
+		min_dpb_size = image_size * 3;
+
+		/* CONTEXT_BUFFER */
+		min_dpb_size += width_in_mb * height_in_mb * 128;
+
+		/* IT surface buffer */
+		min_dpb_size += width_in_mb * 64;
+
+		/* DB surface buffer */
+		min_dpb_size += width_in_mb * 128;
+
+		/* BP */
+		tmp = max(width_in_mb, height_in_mb);
+		min_dpb_size += ALIGN(tmp * 7 * 16, 64);
+		break;
+
+	case 3: /* MPEG2 */
+
+		/* reference picture buffer */
+		min_dpb_size = image_size * 3;
+		break;
+
+	case 4: /* MPEG4 */
+
+		/* reference picture buffer */
+		min_dpb_size = image_size * 3;
+
+		/* CM */
+		min_dpb_size += width_in_mb * height_in_mb * 64;
+
+		/* IT surface buffer */
+		min_dpb_size += ALIGN(width_in_mb * height_in_mb * 32, 64);
+		break;
+
+	case 7: /* H264 Perf */
+		switch(level) {
+		case 30:
+			num_dpb_buffer = 8100 / fs_in_mb;
+			break;
+		case 31:
+			num_dpb_buffer = 18000 / fs_in_mb;
+			break;
+		case 32:
+			num_dpb_buffer = 20480 / fs_in_mb;
+			break;
+		case 41:
+			num_dpb_buffer = 32768 / fs_in_mb;
+			break;
+		case 42:
+			num_dpb_buffer = 34816 / fs_in_mb;
+			break;
+		case 50:
+			num_dpb_buffer = 110400 / fs_in_mb;
+			break;
+		case 51:
+			num_dpb_buffer = 184320 / fs_in_mb;
+			break;
+		default:
+			num_dpb_buffer = 184320 / fs_in_mb;
+			break;
+		}
+		num_dpb_buffer++;
+		if (num_dpb_buffer > 17)
+			num_dpb_buffer = 17;
+
+		/* reference picture buffer */
+		min_dpb_size = image_size * num_dpb_buffer;
+
+		if (!adev->uvd.use_ctx_buf){
+			/* macroblock context buffer */
+			min_dpb_size +=
+				width_in_mb * height_in_mb * num_dpb_buffer * 192;
+
+			/* IT surface buffer */
+			min_dpb_size += width_in_mb * height_in_mb * 32;
+		} else {
+			/* macroblock context buffer */
+			min_ctx_size =
+				width_in_mb * height_in_mb * num_dpb_buffer * 192;
+		}
+		break;
+
+	case 8: /* MJPEG */
+		min_dpb_size = 0;
+		break;
+
+	case 16: /* H265 */
+		image_size = (ALIGN(width, 16) * ALIGN(height, 16) * 3) / 2;
+		image_size = ALIGN(image_size, 256);
+
+		num_dpb_buffer = (le32_to_cpu(msg[59]) & 0xff) + 2;
+		min_dpb_size = image_size * num_dpb_buffer;
+		min_ctx_size = ((width + 255) / 16) * ((height + 255) / 16)
+					   * 16 * num_dpb_buffer + 52 * 1024;
+		break;
+
+	default:
+		DRM_ERROR("UVD codec not handled %d!\n", stream_type);
+		return -EINVAL;
+	}
+
+	if (width > pitch) {
+		DRM_ERROR("Invalid UVD decoding target pitch!\n");
+		return -EINVAL;
+	}
+
+	if (dpb_size < min_dpb_size) {
+		DRM_ERROR("Invalid dpb_size in UVD message (%d / %d)!\n",
+			  dpb_size, min_dpb_size);
+		return -EINVAL;
+	}
+
+	buf_sizes[0x1] = dpb_size;
+	buf_sizes[0x2] = image_size;
+	buf_sizes[0x4] = min_ctx_size;
+	/* store image width to adjust nb memory pstate */
+	adev->uvd.decode_image_width = width;
+	return 0;
+}
+
+/**
+ * amdgpu_uvd_cs_msg - handle UVD message
+ *
+ * @ctx: UVD parser context
+ * @bo: buffer object containing the message
+ * @offset: offset into the buffer object
+ *
+ * Peek into the UVD message and extract the session id.
+ * Make sure that we don't open up to many sessions.
+ */
+static int amdgpu_uvd_cs_msg(struct amdgpu_uvd_cs_ctx *ctx,
+			     struct amdgpu_bo *bo, unsigned offset)
+{
+	struct amdgpu_device *adev = ctx->parser->adev;
+	int32_t *msg, msg_type, handle;
+	void *ptr;
+	long r;
+	int i;
+
+	if (offset & 0x3F) {
+		DRM_ERROR("UVD messages must be 64 byte aligned!\n");
+		return -EINVAL;
+	}
+
+	r = amdgpu_bo_kmap(bo, &ptr);
+	if (r) {
+		DRM_ERROR("Failed mapping the UVD) message (%ld)!\n", r);
+		return r;
+	}
+
+	msg = ptr + offset;
+
+	msg_type = msg[1];
+	handle = msg[2];
+
+	if (handle == 0) {
+		amdgpu_bo_kunmap(bo);
+		DRM_ERROR("Invalid UVD handle!\n");
+		return -EINVAL;
+	}
+
+	switch (msg_type) {
+	case 0:
+		/* it's a create msg, calc image size (width * height) */
+		amdgpu_bo_kunmap(bo);
+
+		/* try to alloc a new handle */
+		for (i = 0; i < adev->uvd.max_handles; ++i) {
+			if (atomic_read(&adev->uvd.handles[i]) == handle) {
+				DRM_ERROR(")Handle 0x%x already in use!\n",
+					  handle);
+				return -EINVAL;
+			}
+
+			if (!atomic_cmpxchg(&adev->uvd.handles[i], 0, handle)) {
+				adev->uvd.filp[i] = ctx->parser->filp;
+				return 0;
+			}
+		}
+
+		DRM_ERROR("No more free UVD handles!\n");
+		return -ENOSPC;
+
+	case 1:
+		/* it's a decode msg, calc buffer sizes */
+		r = amdgpu_uvd_cs_msg_decode(adev, msg, ctx->buf_sizes);
+		amdgpu_bo_kunmap(bo);
+		if (r)
+			return r;
+
+		/* validate the handle */
+		for (i = 0; i < adev->uvd.max_handles; ++i) {
+			if (atomic_read(&adev->uvd.handles[i]) == handle) {
+				if (adev->uvd.filp[i] != ctx->parser->filp) {
+					DRM_ERROR("UVD handle collision detected!\n");
+					return -EINVAL;
+				}
+				return 0;
+			}
+		}
+
+		DRM_ERROR("Invalid UVD handle 0x%x!\n", handle);
+		return -ENOENT;
+
+	case 2:
+		/* it's a destroy msg, free the handle */
+		for (i = 0; i < adev->uvd.max_handles; ++i)
+			atomic_cmpxchg(&adev->uvd.handles[i], handle, 0);
+		amdgpu_bo_kunmap(bo);
+		return 0;
+
+	default:
+		DRM_ERROR("Illegal UVD message type (%d)!\n", msg_type);
+	}
+
+	amdgpu_bo_kunmap(bo);
+	return -EINVAL;
+}
+
+/**
+ * amdgpu_uvd_cs_pass2 - second parsing round
+ *
+ * @ctx: UVD parser context
+ *
+ * Patch buffer addresses, make sure buffer sizes are correct.
+ */
+static int amdgpu_uvd_cs_pass2(struct amdgpu_uvd_cs_ctx *ctx)
+{
+	struct amdgpu_bo_va_mapping *mapping;
+	struct amdgpu_bo *bo;
+	uint32_t cmd;
+	uint64_t start, end;
+	uint64_t addr = amdgpu_uvd_get_addr_from_ctx(ctx);
+	int r;
+
+	r = amdgpu_cs_find_mapping(ctx->parser, addr, &bo, &mapping);
+	if (r) {
+		DRM_ERROR("Can't find BO for addr 0x%08Lx\n", addr);
+		return r;
+	}
+
+	start = amdgpu_bo_gpu_offset(bo);
+
+	end = (mapping->last + 1 - mapping->start);
+	end = end * AMDGPU_GPU_PAGE_SIZE + start;
+
+	addr -= mapping->start * AMDGPU_GPU_PAGE_SIZE;
+	start += addr;
+
+	amdgpu_ib_set_value(ctx->ib, ctx->data0, lower_32_bits(start));
+	amdgpu_ib_set_value(ctx->ib, ctx->data1, upper_32_bits(start));
+
+	cmd = amdgpu_ib_get_value(ctx->ib, ctx->idx) >> 1;
+	if (cmd < 0x4) {
+		if ((end - start) < ctx->buf_sizes[cmd]) {
+			DRM_ERROR("buffer (%d) to small (%d / %d)!\n", cmd,
+				  (unsigned)(end - start),
+				  ctx->buf_sizes[cmd]);
+			return -EINVAL;
+		}
+
+	} else if (cmd == 0x206) {
+		if ((end - start) < ctx->buf_sizes[4]) {
+			DRM_ERROR("buffer (%d) to small (%d / %d)!\n", cmd,
+					  (unsigned)(end - start),
+					  ctx->buf_sizes[4]);
+			return -EINVAL;
+		}
+	} else if ((cmd != 0x100) && (cmd != 0x204)) {
+		DRM_ERROR("invalid UVD command %X!\n", cmd);
+		return -EINVAL;
+	}
+
+	if (!ctx->parser->adev->uvd.address_64_bit) {
+		if ((start >> 28) != ((end - 1) >> 28)) {
+			DRM_ERROR("reloc %LX-%LX crossing 256MB boundary!\n",
+				  start, end);
+			return -EINVAL;
+		}
+
+		if ((cmd == 0 || cmd == 0x3) &&
+		    (start >> 28) != (ctx->parser->adev->uvd.inst->gpu_addr >> 28)) {
+			DRM_ERROR("msg/fb buffer %LX-%LX out of 256MB segment!\n",
+				  start, end);
+			return -EINVAL;
+		}
+	}
+
+	if (cmd == 0) {
+		ctx->has_msg_cmd = true;
+		r = amdgpu_uvd_cs_msg(ctx, bo, addr);
+		if (r)
+			return r;
+	} else if (!ctx->has_msg_cmd) {
+		DRM_ERROR("Message needed before other commands are send!\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/**
+ * amdgpu_uvd_cs_reg - parse register writes
+ *
+ * @ctx: UVD parser context
+ * @cb: callback function
+ *
+ * Parse the register writes, call cb on each complete command.
+ */
+static int amdgpu_uvd_cs_reg(struct amdgpu_uvd_cs_ctx *ctx,
+			     int (*cb)(struct amdgpu_uvd_cs_ctx *ctx))
+{
+	int i, r;
+
+	ctx->idx++;
+	for (i = 0; i <= ctx->count; ++i) {
+		unsigned reg = ctx->reg + i;
+
+		if (ctx->idx >= ctx->ib->length_dw) {
+			DRM_ERROR("Register command after end of CS!\n");
+			return -EINVAL;
+		}
+
+		switch (reg) {
+		case mmUVD_GPCOM_VCPU_DATA0:
+			ctx->data0 = ctx->idx;
+			break;
+		case mmUVD_GPCOM_VCPU_DATA1:
+			ctx->data1 = ctx->idx;
+			break;
+		case mmUVD_GPCOM_VCPU_CMD:
+			r = cb(ctx);
+			if (r)
+				return r;
+			break;
+		case mmUVD_ENGINE_CNTL:
+		case mmUVD_NO_OP:
+			break;
+		default:
+			DRM_ERROR("Invalid reg 0x%X!\n", reg);
+			return -EINVAL;
+		}
+		ctx->idx++;
+	}
+	return 0;
+}
+
+/**
+ * amdgpu_uvd_cs_packets - parse UVD packets
+ *
+ * @ctx: UVD parser context
+ * @cb: callback function
+ *
+ * Parse the command stream packets.
+ */
+static int amdgpu_uvd_cs_packets(struct amdgpu_uvd_cs_ctx *ctx,
+				 int (*cb)(struct amdgpu_uvd_cs_ctx *ctx))
+{
+	int r;
+
+	for (ctx->idx = 0 ; ctx->idx < ctx->ib->length_dw; ) {
+		uint32_t cmd = amdgpu_ib_get_value(ctx->ib, ctx->idx);
+		unsigned type = CP_PACKET_GET_TYPE(cmd);
+		switch (type) {
+		case PACKET_TYPE0:
+			ctx->reg = CP_PACKET0_GET_REG(cmd);
+			ctx->count = CP_PACKET_GET_COUNT(cmd);
+			r = amdgpu_uvd_cs_reg(ctx, cb);
+			if (r)
+				return r;
+			break;
+		case PACKET_TYPE2:
+			++ctx->idx;
+			break;
+		default:
+			DRM_ERROR("Unknown packet type %d !\n", type);
+			return -EINVAL;
+		}
+	}
+	return 0;
+}
+
+/**
+ * amdgpu_uvd_ring_parse_cs - UVD command submission parser
+ *
+ * @parser: Command submission parser context
+ * @job: the job to parse
+ * @ib: the IB to patch
+ *
+ * Parse the command stream, patch in addresses as necessary.
+ */
+int amdgpu_uvd_ring_parse_cs(struct amdgpu_cs_parser *parser,
+			     struct amdgpu_job *job,
+			     struct amdgpu_ib *ib)
+{
+	struct amdgpu_uvd_cs_ctx ctx = {};
+	unsigned buf_sizes[] = {
+		[0x00000000]	=	2048,
+		[0x00000001]	=	0xFFFFFFFF,
+		[0x00000002]	=	0xFFFFFFFF,
+		[0x00000003]	=	2048,
+		[0x00000004]	=	0xFFFFFFFF,
+	};
+	int r;
+
+	job->vm = NULL;
+	ib->gpu_addr = amdgpu_sa_bo_gpu_addr(ib->sa_bo);
+
+	if (ib->length_dw % 16) {
+		DRM_ERROR("UVD IB length (%d) not 16 dwords aligned!\n",
+			  ib->length_dw);
+		return -EINVAL;
+	}
+
+	ctx.parser = parser;
+	ctx.buf_sizes = buf_sizes;
+	ctx.ib = ib;
+
+	/* first round only required on chips without UVD 64 bit address support */
+	if (!parser->adev->uvd.address_64_bit) {
+		/* first round, make sure the buffers are actually in the UVD segment */
+		r = amdgpu_uvd_cs_packets(&ctx, amdgpu_uvd_cs_pass1);
+		if (r)
+			return r;
+	}
+
+	/* second round, patch buffer addresses into the command stream */
+	r = amdgpu_uvd_cs_packets(&ctx, amdgpu_uvd_cs_pass2);
+	if (r)
+		return r;
+
+	if (!ctx.has_msg_cmd) {
+		DRM_ERROR("UVD-IBs need a msg command!\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int amdgpu_uvd_send_msg(struct amdgpu_ring *ring, struct amdgpu_bo *bo,
+			       bool direct, struct dma_fence **fence)
+{
+	struct amdgpu_device *adev = ring->adev;
+	struct dma_fence *f = NULL;
+	struct amdgpu_job *job;
+	struct amdgpu_ib *ib;
+	uint32_t data[4];
+	uint64_t addr;
+	long r;
+	int i;
+	unsigned offset_idx = 0;
+	unsigned offset[3] = { UVD_BASE_SI, 0, 0 };
+
+	r = amdgpu_job_alloc_with_ib(adev, 64, direct ? AMDGPU_IB_POOL_DIRECT :
+				     AMDGPU_IB_POOL_DELAYED, &job);
+	if (r)
+		return r;
+
+	if (adev->asic_type >= CHIP_VEGA10) {
+		offset_idx = 1 + ring->me;
+		offset[1] = adev->reg_offset[UVD_HWIP][0][1];
+		offset[2] = adev->reg_offset[UVD_HWIP][1][1];
+	}
+
+	data[0] = PACKET0(offset[offset_idx] + UVD_GPCOM_VCPU_DATA0, 0);
+	data[1] = PACKET0(offset[offset_idx] + UVD_GPCOM_VCPU_DATA1, 0);
+	data[2] = PACKET0(offset[offset_idx] + UVD_GPCOM_VCPU_CMD, 0);
+	data[3] = PACKET0(offset[offset_idx] + UVD_NO_OP, 0);
+
+	ib = &job->ibs[0];
+	addr = amdgpu_bo_gpu_offset(bo);
+	ib->ptr[0] = data[0];
+	ib->ptr[1] = addr;
+	ib->ptr[2] = data[1];
+	ib->ptr[3] = addr >> 32;
+	ib->ptr[4] = data[2];
+	ib->ptr[5] = 0;
+	for (i = 6; i < 16; i += 2) {
+		ib->ptr[i] = data[3];
+		ib->ptr[i+1] = 0;
+	}
+	ib->length_dw = 16;
+
+	if (direct) {
+		r = dma_resv_wait_timeout(bo->tbo.base.resv,
+					  DMA_RESV_USAGE_KERNEL, false,
+					  msecs_to_jiffies(10));
+		if (r == 0)
+			r = -ETIMEDOUT;
+		if (r < 0)
+			goto err_free;
+
+		r = amdgpu_job_submit_direct(job, ring, &f);
+		if (r)
+			goto err_free;
+	} else {
+		r = amdgpu_sync_resv(adev, &job->sync, bo->tbo.base.resv,
+				     AMDGPU_SYNC_ALWAYS,
+				     AMDGPU_FENCE_OWNER_UNDEFINED);
+		if (r)
+			goto err_free;
+
+		r = amdgpu_job_submit(job, &adev->uvd.entity,
+				      AMDGPU_FENCE_OWNER_UNDEFINED, &f);
+		if (r)
+			goto err_free;
+	}
+
+	amdgpu_bo_reserve(bo, true);
+	amdgpu_bo_fence(bo, f, false);
+	amdgpu_bo_unreserve(bo);
+
+	if (fence)
+		*fence = dma_fence_get(f);
+	dma_fence_put(f);
+
+	return 0;
+
+err_free:
+	amdgpu_job_free(job);
+	return r;
+}
+
+/* multiple fence commands without any stream commands in between can
+   crash the vcpu so just try to emmit a dummy create/destroy msg to
+   avoid this */
+int amdgpu_uvd_get_create_msg(struct amdgpu_ring *ring, uint32_t handle,
+			      struct dma_fence **fence)
+{
+	struct amdgpu_device *adev = ring->adev;
+	struct amdgpu_bo *bo = adev->uvd.ib_bo;
+	uint32_t *msg;
+	int i;
+
+	msg = amdgpu_bo_kptr(bo);
+	/* stitch together an UVD create msg */
+	msg[0] = cpu_to_le32(0x00000de4);
+	msg[1] = cpu_to_le32(0x00000000);
+	msg[2] = cpu_to_le32(handle);
+	msg[3] = cpu_to_le32(0x00000000);
+	msg[4] = cpu_to_le32(0x00000000);
+	msg[5] = cpu_to_le32(0x00000000);
+	msg[6] = cpu_to_le32(0x00000000);
+	msg[7] = cpu_to_le32(0x00000780);
+	msg[8] = cpu_to_le32(0x00000440);
+	msg[9] = cpu_to_le32(0x00000000);
+	msg[10] = cpu_to_le32(0x01b37000);
+	for (i = 11; i < 1024; ++i)
+		msg[i] = cpu_to_le32(0x0);
+
+	return amdgpu_uvd_send_msg(ring, bo, true, fence);
+
+}
+
+int amdgpu_uvd_get_destroy_msg(struct amdgpu_ring *ring, uint32_t handle,
+			       bool direct, struct dma_fence **fence)
+{
+	struct amdgpu_device *adev = ring->adev;
+	struct amdgpu_bo *bo = NULL;
+	uint32_t *msg;
+	int r, i;
+
+	if (direct) {
+		bo = adev->uvd.ib_bo;
+	} else {
+		r = amdgpu_uvd_create_msg_bo_helper(adev, 4096, &bo);
+		if (r)
+			return r;
+	}
+
+	msg = amdgpu_bo_kptr(bo);
+	/* stitch together an UVD destroy msg */
+	msg[0] = cpu_to_le32(0x00000de4);
+	msg[1] = cpu_to_le32(0x00000002);
+	msg[2] = cpu_to_le32(handle);
+	msg[3] = cpu_to_le32(0x00000000);
+	for (i = 4; i < 1024; ++i)
+		msg[i] = cpu_to_le32(0x0);
+
+	r = amdgpu_uvd_send_msg(ring, bo, direct, fence);
+
+	if (!direct)
+		amdgpu_bo_free_kernel(&bo, NULL, (void **)&msg);
+
+	return r;
+}
+
+static void amdgpu_uvd_idle_work_handler(struct work_struct *work)
+{
+	struct amdgpu_device *adev =
+		container_of(work, struct amdgpu_device, uvd.idle_work.work);
+	unsigned fences = 0, i, j;
+
+	for (i = 0; i < adev->uvd.num_uvd_inst; ++i) {
+		if (adev->uvd.harvest_config & (1 << i))
+			continue;
+		fences += amdgpu_fence_count_emitted(&adev->uvd.inst[i].ring);
+		for (j = 0; j < adev->uvd.num_enc_rings; ++j) {
+			fences += amdgpu_fence_count_emitted(&adev->uvd.inst[i].ring_enc[j]);
+		}
+	}
+
+	if (fences == 0) {
+		if (adev->pm.dpm_enabled) {
+			amdgpu_dpm_enable_uvd(adev, false);
+		} else {
+			amdgpu_asic_set_uvd_clocks(adev, 0, 0);
+			/* shutdown the UVD block */
+			amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_UVD,
+							       AMD_PG_STATE_GATE);
+			amdgpu_device_ip_set_clockgating_state(adev, AMD_IP_BLOCK_TYPE_UVD,
+							       AMD_CG_STATE_GATE);
+		}
+	} else {
+		schedule_delayed_work(&adev->uvd.idle_work, UVD_IDLE_TIMEOUT);
+	}
+}
+
+void amdgpu_uvd_ring_begin_use(struct amdgpu_ring *ring)
+{
+	struct amdgpu_device *adev = ring->adev;
+	bool set_clocks;
+
+	if (amdgpu_sriov_vf(adev))
+		return;
+
+	set_clocks = !cancel_delayed_work_sync(&adev->uvd.idle_work);
+	if (set_clocks) {
+		if (adev->pm.dpm_enabled) {
+			amdgpu_dpm_enable_uvd(adev, true);
+		} else {
+			amdgpu_asic_set_uvd_clocks(adev, 53300, 40000);
+			amdgpu_device_ip_set_clockgating_state(adev, AMD_IP_BLOCK_TYPE_UVD,
+							       AMD_CG_STATE_UNGATE);
+			amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_UVD,
+							       AMD_PG_STATE_UNGATE);
+		}
+	}
+}
+
+void amdgpu_uvd_ring_end_use(struct amdgpu_ring *ring)
+{
+	if (!amdgpu_sriov_vf(ring->adev))
+		schedule_delayed_work(&ring->adev->uvd.idle_work, UVD_IDLE_TIMEOUT);
+}
+
+/**
+ * amdgpu_uvd_ring_test_ib - test ib execution
+ *
+ * @ring: amdgpu_ring pointer
+ * @timeout: timeout value in jiffies, or MAX_SCHEDULE_TIMEOUT
+ *
+ * Test if we can successfully execute an IB
+ */
+int amdgpu_uvd_ring_test_ib(struct amdgpu_ring *ring, long timeout)
+{
+	struct dma_fence *fence;
+	long r;
+
+	r = amdgpu_uvd_get_create_msg(ring, 1, &fence);
+	if (r)
+		goto error;
+
+	r = dma_fence_wait_timeout(fence, false, timeout);
+	dma_fence_put(fence);
+	if (r == 0)
+		r = -ETIMEDOUT;
+	if (r < 0)
+		goto error;
+
+	r = amdgpu_uvd_get_destroy_msg(ring, 1, true, &fence);
+	if (r)
+		goto error;
+
+	r = dma_fence_wait_timeout(fence, false, timeout);
+	if (r == 0)
+		r = -ETIMEDOUT;
+	else if (r > 0)
+		r = 0;
+
+	dma_fence_put(fence);
+
+error:
+	return r;
+}
+
+/**
+ * amdgpu_uvd_used_handles - returns used UVD handles
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Returns the number of UVD handles in use
+ */
+uint32_t amdgpu_uvd_used_handles(struct amdgpu_device *adev)
+{
+	unsigned i;
+	uint32_t used_handles = 0;
+
+	for (i = 0; i < adev->uvd.max_handles; ++i) {
+		/*
+		 * Handles can be freed in any order, and not
+		 * necessarily linear. So we need to count
+		 * all non-zero handles.
+		 */
+		if (atomic_read(&adev->uvd.handles[i]))
+			used_handles++;
+	}
+
+	return used_handles;
+}