Adding upstream version 2.4.114.upstream/2.4.114upstream

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

1 files changed, 972 insertions, 0 deletions

diff --git a/amdgpu/amdgpu_cs.c b/amdgpu/amdgpu_cs.c
new file mode 100644
index 0000000..638fd7d
--- /dev/null
+++ b/amdgpu/amdgpu_cs.c
@@ -0,0 +1,972 @@
+/*
+ * Copyright 2014 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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <pthread.h>
+#include <sched.h>
+#include <sys/ioctl.h>
+#if HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
+
+#include "xf86drm.h"
+#include "amdgpu_drm.h"
+#include "amdgpu_internal.h"
+
+static int amdgpu_cs_unreference_sem(amdgpu_semaphore_handle sem);
+static int amdgpu_cs_reset_sem(amdgpu_semaphore_handle sem);
+
+/**
+ * Create command submission context
+ *
+ * \param   dev      - \c [in] Device handle. See #amdgpu_device_initialize()
+ * \param   priority - \c [in] Context creation flags. See AMDGPU_CTX_PRIORITY_*
+ * \param   context  - \c [out] GPU Context handle
+ *
+ * \return  0 on success otherwise POSIX Error code
+*/
+drm_public int amdgpu_cs_ctx_create2(amdgpu_device_handle dev,
+				     uint32_t priority,
+				     amdgpu_context_handle *context)
+{
+	struct amdgpu_context *gpu_context;
+	union drm_amdgpu_ctx args;
+	int i, j, k;
+	int r;
+
+	if (!dev || !context)
+		return -EINVAL;
+
+	gpu_context = calloc(1, sizeof(struct amdgpu_context));
+	if (!gpu_context)
+		return -ENOMEM;
+
+	gpu_context->dev = dev;
+
+	r = pthread_mutex_init(&gpu_context->sequence_mutex, NULL);
+	if (r)
+		goto error;
+
+	/* Create the context */
+	memset(&args, 0, sizeof(args));
+	args.in.op = AMDGPU_CTX_OP_ALLOC_CTX;
+	args.in.priority = priority;
+
+	r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_CTX, &args, sizeof(args));
+	if (r)
+		goto error;
+
+	gpu_context->id = args.out.alloc.ctx_id;
+	for (i = 0; i < AMDGPU_HW_IP_NUM; i++)
+		for (j = 0; j < AMDGPU_HW_IP_INSTANCE_MAX_COUNT; j++)
+			for (k = 0; k < AMDGPU_CS_MAX_RINGS; k++)
+				list_inithead(&gpu_context->sem_list[i][j][k]);
+	*context = (amdgpu_context_handle)gpu_context;
+
+	return 0;
+
+error:
+	pthread_mutex_destroy(&gpu_context->sequence_mutex);
+	free(gpu_context);
+	return r;
+}
+
+drm_public int amdgpu_cs_ctx_create(amdgpu_device_handle dev,
+				    amdgpu_context_handle *context)
+{
+	return amdgpu_cs_ctx_create2(dev, AMDGPU_CTX_PRIORITY_NORMAL, context);
+}
+
+/**
+ * Release command submission context
+ *
+ * \param   dev - \c [in] amdgpu device handle
+ * \param   context - \c [in] amdgpu context handle
+ *
+ * \return  0 on success otherwise POSIX Error code
+*/
+drm_public int amdgpu_cs_ctx_free(amdgpu_context_handle context)
+{
+	union drm_amdgpu_ctx args;
+	int i, j, k;
+	int r;
+
+	if (!context)
+		return -EINVAL;
+
+	pthread_mutex_destroy(&context->sequence_mutex);
+
+	/* now deal with kernel side */
+	memset(&args, 0, sizeof(args));
+	args.in.op = AMDGPU_CTX_OP_FREE_CTX;
+	args.in.ctx_id = context->id;
+	r = drmCommandWriteRead(context->dev->fd, DRM_AMDGPU_CTX,
+				&args, sizeof(args));
+	for (i = 0; i < AMDGPU_HW_IP_NUM; i++) {
+		for (j = 0; j < AMDGPU_HW_IP_INSTANCE_MAX_COUNT; j++) {
+			for (k = 0; k < AMDGPU_CS_MAX_RINGS; k++) {
+				amdgpu_semaphore_handle sem;
+				LIST_FOR_EACH_ENTRY(sem, &context->sem_list[i][j][k], list) {
+					list_del(&sem->list);
+					amdgpu_cs_reset_sem(sem);
+					amdgpu_cs_unreference_sem(sem);
+				}
+			}
+		}
+	}
+	free(context);
+
+	return r;
+}
+
+drm_public int amdgpu_cs_ctx_override_priority(amdgpu_device_handle dev,
+                                               amdgpu_context_handle context,
+                                               int master_fd,
+                                               unsigned priority)
+{
+	union drm_amdgpu_sched args;
+	int r;
+
+	if (!dev || !context || master_fd < 0)
+		return -EINVAL;
+
+	memset(&args, 0, sizeof(args));
+
+	args.in.op = AMDGPU_SCHED_OP_CONTEXT_PRIORITY_OVERRIDE;
+	args.in.fd = dev->fd;
+	args.in.priority = priority;
+	args.in.ctx_id = context->id;
+
+	r = drmCommandWrite(master_fd, DRM_AMDGPU_SCHED, &args, sizeof(args));
+	if (r)
+		return r;
+
+	return 0;
+}
+
+drm_public int amdgpu_cs_ctx_stable_pstate(amdgpu_context_handle context,
+					   uint32_t op,
+					   uint32_t flags,
+					   uint32_t *out_flags)
+{
+	union drm_amdgpu_ctx args;
+	int r;
+
+	if (!context)
+		return -EINVAL;
+
+	memset(&args, 0, sizeof(args));
+	args.in.op = op;
+	args.in.ctx_id = context->id;
+	args.in.flags = flags;
+	r = drmCommandWriteRead(context->dev->fd, DRM_AMDGPU_CTX,
+				&args, sizeof(args));
+	if (!r && out_flags)
+		*out_flags = args.out.pstate.flags;
+	return r;
+}
+
+drm_public int amdgpu_cs_query_reset_state(amdgpu_context_handle context,
+					   uint32_t *state, uint32_t *hangs)
+{
+	union drm_amdgpu_ctx args;
+	int r;
+
+	if (!context)
+		return -EINVAL;
+
+	memset(&args, 0, sizeof(args));
+	args.in.op = AMDGPU_CTX_OP_QUERY_STATE;
+	args.in.ctx_id = context->id;
+	r = drmCommandWriteRead(context->dev->fd, DRM_AMDGPU_CTX,
+				&args, sizeof(args));
+	if (!r) {
+		*state = args.out.state.reset_status;
+		*hangs = args.out.state.hangs;
+	}
+	return r;
+}
+
+drm_public int amdgpu_cs_query_reset_state2(amdgpu_context_handle context,
+					    uint64_t *flags)
+{
+	union drm_amdgpu_ctx args;
+	int r;
+
+	if (!context)
+		return -EINVAL;
+
+	memset(&args, 0, sizeof(args));
+	args.in.op = AMDGPU_CTX_OP_QUERY_STATE2;
+	args.in.ctx_id = context->id;
+	r = drmCommandWriteRead(context->dev->fd, DRM_AMDGPU_CTX,
+				&args, sizeof(args));
+	if (!r)
+		*flags = args.out.state.flags;
+	return r;
+}
+
+/**
+ * Submit command to kernel DRM
+ * \param   dev - \c [in]  Device handle
+ * \param   context - \c [in]  GPU Context
+ * \param   ibs_request - \c [in]  Pointer to submission requests
+ * \param   fence - \c [out] return fence for this submission
+ *
+ * \return  0 on success otherwise POSIX Error code
+ * \sa amdgpu_cs_submit()
+*/
+static int amdgpu_cs_submit_one(amdgpu_context_handle context,
+				struct amdgpu_cs_request *ibs_request)
+{
+	struct drm_amdgpu_cs_chunk *chunks;
+	struct drm_amdgpu_cs_chunk_data *chunk_data;
+	struct drm_amdgpu_cs_chunk_dep *dependencies = NULL;
+	struct drm_amdgpu_cs_chunk_dep *sem_dependencies = NULL;
+	amdgpu_device_handle dev = context->dev;
+	struct list_head *sem_list;
+	amdgpu_semaphore_handle sem, tmp;
+	uint32_t i, size, num_chunks, bo_list_handle = 0, sem_count = 0;
+	uint64_t seq_no;
+	bool user_fence;
+	int r = 0;
+
+	if (ibs_request->ip_type >= AMDGPU_HW_IP_NUM)
+		return -EINVAL;
+	if (ibs_request->ring >= AMDGPU_CS_MAX_RINGS)
+		return -EINVAL;
+	if (ibs_request->number_of_ibs == 0) {
+		ibs_request->seq_no = AMDGPU_NULL_SUBMIT_SEQ;
+		return 0;
+	}
+	user_fence = (ibs_request->fence_info.handle != NULL);
+
+	size = ibs_request->number_of_ibs + (user_fence ? 2 : 1) + 1;
+
+	chunks = alloca(sizeof(struct drm_amdgpu_cs_chunk) * size);
+
+	size = ibs_request->number_of_ibs + (user_fence ? 1 : 0);
+
+	chunk_data = alloca(sizeof(struct drm_amdgpu_cs_chunk_data) * size);
+
+	if (ibs_request->resources)
+		bo_list_handle = ibs_request->resources->handle;
+	num_chunks = ibs_request->number_of_ibs;
+	/* IB chunks */
+	for (i = 0; i < ibs_request->number_of_ibs; i++) {
+		struct amdgpu_cs_ib_info *ib;
+		chunks[i].chunk_id = AMDGPU_CHUNK_ID_IB;
+		chunks[i].length_dw = sizeof(struct drm_amdgpu_cs_chunk_ib) / 4;
+		chunks[i].chunk_data = (uint64_t)(uintptr_t)&chunk_data[i];
+
+		ib = &ibs_request->ibs[i];
+
+		chunk_data[i].ib_data._pad = 0;
+		chunk_data[i].ib_data.va_start = ib->ib_mc_address;
+		chunk_data[i].ib_data.ib_bytes = ib->size * 4;
+		chunk_data[i].ib_data.ip_type = ibs_request->ip_type;
+		chunk_data[i].ib_data.ip_instance = ibs_request->ip_instance;
+		chunk_data[i].ib_data.ring = ibs_request->ring;
+		chunk_data[i].ib_data.flags = ib->flags;
+	}
+
+	pthread_mutex_lock(&context->sequence_mutex);
+
+	if (user_fence) {
+		i = num_chunks++;
+
+		/* fence chunk */
+		chunks[i].chunk_id = AMDGPU_CHUNK_ID_FENCE;
+		chunks[i].length_dw = sizeof(struct drm_amdgpu_cs_chunk_fence) / 4;
+		chunks[i].chunk_data = (uint64_t)(uintptr_t)&chunk_data[i];
+
+		/* fence bo handle */
+		chunk_data[i].fence_data.handle = ibs_request->fence_info.handle->handle;
+		/* offset */
+		chunk_data[i].fence_data.offset = 
+			ibs_request->fence_info.offset * sizeof(uint64_t);
+	}
+
+	if (ibs_request->number_of_dependencies) {
+		dependencies = alloca(sizeof(struct drm_amdgpu_cs_chunk_dep) *
+			ibs_request->number_of_dependencies);
+		if (!dependencies) {
+			r = -ENOMEM;
+			goto error_unlock;
+		}
+
+		for (i = 0; i < ibs_request->number_of_dependencies; ++i) {
+			struct amdgpu_cs_fence *info = &ibs_request->dependencies[i];
+			struct drm_amdgpu_cs_chunk_dep *dep = &dependencies[i];
+			dep->ip_type = info->ip_type;
+			dep->ip_instance = info->ip_instance;
+			dep->ring = info->ring;
+			dep->ctx_id = info->context->id;
+			dep->handle = info->fence;
+		}
+
+		i = num_chunks++;
+
+		/* dependencies chunk */
+		chunks[i].chunk_id = AMDGPU_CHUNK_ID_DEPENDENCIES;
+		chunks[i].length_dw = sizeof(struct drm_amdgpu_cs_chunk_dep) / 4
+			* ibs_request->number_of_dependencies;
+		chunks[i].chunk_data = (uint64_t)(uintptr_t)dependencies;
+	}
+
+	sem_list = &context->sem_list[ibs_request->ip_type][ibs_request->ip_instance][ibs_request->ring];
+	LIST_FOR_EACH_ENTRY(sem, sem_list, list)
+		sem_count++;
+	if (sem_count) {
+		sem_dependencies = alloca(sizeof(struct drm_amdgpu_cs_chunk_dep) * sem_count);
+		if (!sem_dependencies) {
+			r = -ENOMEM;
+			goto error_unlock;
+		}
+		sem_count = 0;
+		LIST_FOR_EACH_ENTRY_SAFE(sem, tmp, sem_list, list) {
+			struct amdgpu_cs_fence *info = &sem->signal_fence;
+			struct drm_amdgpu_cs_chunk_dep *dep = &sem_dependencies[sem_count++];
+			dep->ip_type = info->ip_type;
+			dep->ip_instance = info->ip_instance;
+			dep->ring = info->ring;
+			dep->ctx_id = info->context->id;
+			dep->handle = info->fence;
+
+			list_del(&sem->list);
+			amdgpu_cs_reset_sem(sem);
+			amdgpu_cs_unreference_sem(sem);
+		}
+		i = num_chunks++;
+
+		/* dependencies chunk */
+		chunks[i].chunk_id = AMDGPU_CHUNK_ID_DEPENDENCIES;
+		chunks[i].length_dw = sizeof(struct drm_amdgpu_cs_chunk_dep) / 4 * sem_count;
+		chunks[i].chunk_data = (uint64_t)(uintptr_t)sem_dependencies;
+	}
+
+	r = amdgpu_cs_submit_raw2(dev, context, bo_list_handle, num_chunks,
+				  chunks, &seq_no);
+	if (r)
+		goto error_unlock;
+
+	ibs_request->seq_no = seq_no;
+	context->last_seq[ibs_request->ip_type][ibs_request->ip_instance][ibs_request->ring] = ibs_request->seq_no;
+error_unlock:
+	pthread_mutex_unlock(&context->sequence_mutex);
+	return r;
+}
+
+drm_public int amdgpu_cs_submit(amdgpu_context_handle context,
+				uint64_t flags,
+				struct amdgpu_cs_request *ibs_request,
+				uint32_t number_of_requests)
+{
+	uint32_t i;
+	int r;
+
+	if (!context || !ibs_request)
+		return -EINVAL;
+
+	r = 0;
+	for (i = 0; i < number_of_requests; i++) {
+		r = amdgpu_cs_submit_one(context, ibs_request);
+		if (r)
+			break;
+		ibs_request++;
+	}
+
+	return r;
+}
+
+/**
+ * Calculate absolute timeout.
+ *
+ * \param   timeout - \c [in] timeout in nanoseconds.
+ *
+ * \return  absolute timeout in nanoseconds
+*/
+drm_private uint64_t amdgpu_cs_calculate_timeout(uint64_t timeout)
+{
+	int r;
+
+	if (timeout != AMDGPU_TIMEOUT_INFINITE) {
+		struct timespec current;
+		uint64_t current_ns;
+		r = clock_gettime(CLOCK_MONOTONIC, &current);
+		if (r) {
+			fprintf(stderr, "clock_gettime() returned error (%d)!", errno);
+			return AMDGPU_TIMEOUT_INFINITE;
+		}
+
+		current_ns = ((uint64_t)current.tv_sec) * 1000000000ull;
+		current_ns += current.tv_nsec;
+		timeout += current_ns;
+		if (timeout < current_ns)
+			timeout = AMDGPU_TIMEOUT_INFINITE;
+	}
+	return timeout;
+}
+
+static int amdgpu_ioctl_wait_cs(amdgpu_context_handle context,
+				unsigned ip,
+				unsigned ip_instance,
+				uint32_t ring,
+				uint64_t handle,
+				uint64_t timeout_ns,
+				uint64_t flags,
+				bool *busy)
+{
+	amdgpu_device_handle dev = context->dev;
+	union drm_amdgpu_wait_cs args;
+	int r;
+
+	memset(&args, 0, sizeof(args));
+	args.in.handle = handle;
+	args.in.ip_type = ip;
+	args.in.ip_instance = ip_instance;
+	args.in.ring = ring;
+	args.in.ctx_id = context->id;
+
+	if (flags & AMDGPU_QUERY_FENCE_TIMEOUT_IS_ABSOLUTE)
+		args.in.timeout = timeout_ns;
+	else
+		args.in.timeout = amdgpu_cs_calculate_timeout(timeout_ns);
+
+	r = drmIoctl(dev->fd, DRM_IOCTL_AMDGPU_WAIT_CS, &args);
+	if (r)
+		return -errno;
+
+	*busy = args.out.status;
+	return 0;
+}
+
+drm_public int amdgpu_cs_query_fence_status(struct amdgpu_cs_fence *fence,
+					    uint64_t timeout_ns,
+					    uint64_t flags,
+					    uint32_t *expired)
+{
+	bool busy = true;
+	int r;
+
+	if (!fence || !expired || !fence->context)
+		return -EINVAL;
+	if (fence->ip_type >= AMDGPU_HW_IP_NUM)
+		return -EINVAL;
+	if (fence->ring >= AMDGPU_CS_MAX_RINGS)
+		return -EINVAL;
+	if (fence->fence == AMDGPU_NULL_SUBMIT_SEQ) {
+		*expired = true;
+		return 0;
+	}
+
+	*expired = false;
+
+	r = amdgpu_ioctl_wait_cs(fence->context, fence->ip_type,
+				fence->ip_instance, fence->ring,
+			       	fence->fence, timeout_ns, flags, &busy);
+
+	if (!r && !busy)
+		*expired = true;
+
+	return r;
+}
+
+static int amdgpu_ioctl_wait_fences(struct amdgpu_cs_fence *fences,
+				    uint32_t fence_count,
+				    bool wait_all,
+				    uint64_t timeout_ns,
+				    uint32_t *status,
+				    uint32_t *first)
+{
+	struct drm_amdgpu_fence *drm_fences;
+	amdgpu_device_handle dev = fences[0].context->dev;
+	union drm_amdgpu_wait_fences args;
+	int r;
+	uint32_t i;
+
+	drm_fences = alloca(sizeof(struct drm_amdgpu_fence) * fence_count);
+	for (i = 0; i < fence_count; i++) {
+		drm_fences[i].ctx_id = fences[i].context->id;
+		drm_fences[i].ip_type = fences[i].ip_type;
+		drm_fences[i].ip_instance = fences[i].ip_instance;
+		drm_fences[i].ring = fences[i].ring;
+		drm_fences[i].seq_no = fences[i].fence;
+	}
+
+	memset(&args, 0, sizeof(args));
+	args.in.fences = (uint64_t)(uintptr_t)drm_fences;
+	args.in.fence_count = fence_count;
+	args.in.wait_all = wait_all;
+	args.in.timeout_ns = amdgpu_cs_calculate_timeout(timeout_ns);
+
+	r = drmIoctl(dev->fd, DRM_IOCTL_AMDGPU_WAIT_FENCES, &args);
+	if (r)
+		return -errno;
+
+	*status = args.out.status;
+
+	if (first)
+		*first = args.out.first_signaled;
+
+	return 0;
+}
+
+drm_public int amdgpu_cs_wait_fences(struct amdgpu_cs_fence *fences,
+				     uint32_t fence_count,
+				     bool wait_all,
+				     uint64_t timeout_ns,
+				     uint32_t *status,
+				     uint32_t *first)
+{
+	uint32_t i;
+
+	/* Sanity check */
+	if (!fences || !status || !fence_count)
+		return -EINVAL;
+
+	for (i = 0; i < fence_count; i++) {
+		if (NULL == fences[i].context)
+			return -EINVAL;
+		if (fences[i].ip_type >= AMDGPU_HW_IP_NUM)
+			return -EINVAL;
+		if (fences[i].ring >= AMDGPU_CS_MAX_RINGS)
+			return -EINVAL;
+	}
+
+	*status = 0;
+
+	return amdgpu_ioctl_wait_fences(fences, fence_count, wait_all,
+					timeout_ns, status, first);
+}
+
+drm_public int amdgpu_cs_create_semaphore(amdgpu_semaphore_handle *sem)
+{
+	struct amdgpu_semaphore *gpu_semaphore;
+
+	if (!sem)
+		return -EINVAL;
+
+	gpu_semaphore = calloc(1, sizeof(struct amdgpu_semaphore));
+	if (!gpu_semaphore)
+		return -ENOMEM;
+
+	atomic_set(&gpu_semaphore->refcount, 1);
+	*sem = gpu_semaphore;
+
+	return 0;
+}
+
+drm_public int amdgpu_cs_signal_semaphore(amdgpu_context_handle ctx,
+					  uint32_t ip_type,
+			       uint32_t ip_instance,
+			       uint32_t ring,
+			       amdgpu_semaphore_handle sem)
+{
+	if (!ctx || !sem)
+		return -EINVAL;
+	if (ip_type >= AMDGPU_HW_IP_NUM)
+		return -EINVAL;
+	if (ring >= AMDGPU_CS_MAX_RINGS)
+		return -EINVAL;
+	/* sem has been signaled */
+	if (sem->signal_fence.context)
+		return -EINVAL;
+	pthread_mutex_lock(&ctx->sequence_mutex);
+	sem->signal_fence.context = ctx;
+	sem->signal_fence.ip_type = ip_type;
+	sem->signal_fence.ip_instance = ip_instance;
+	sem->signal_fence.ring = ring;
+	sem->signal_fence.fence = ctx->last_seq[ip_type][ip_instance][ring];
+	update_references(NULL, &sem->refcount);
+	pthread_mutex_unlock(&ctx->sequence_mutex);
+	return 0;
+}
+
+drm_public int amdgpu_cs_wait_semaphore(amdgpu_context_handle ctx,
+					uint32_t ip_type,
+			     uint32_t ip_instance,
+			     uint32_t ring,
+			     amdgpu_semaphore_handle sem)
+{
+	if (!ctx || !sem)
+		return -EINVAL;
+	if (ip_type >= AMDGPU_HW_IP_NUM)
+		return -EINVAL;
+	if (ring >= AMDGPU_CS_MAX_RINGS)
+		return -EINVAL;
+	/* must signal first */
+	if (!sem->signal_fence.context)
+		return -EINVAL;
+
+	pthread_mutex_lock(&ctx->sequence_mutex);
+	list_add(&sem->list, &ctx->sem_list[ip_type][ip_instance][ring]);
+	pthread_mutex_unlock(&ctx->sequence_mutex);
+	return 0;
+}
+
+static int amdgpu_cs_reset_sem(amdgpu_semaphore_handle sem)
+{
+	if (!sem || !sem->signal_fence.context)
+		return -EINVAL;
+
+	sem->signal_fence.context = NULL;
+	sem->signal_fence.ip_type = 0;
+	sem->signal_fence.ip_instance = 0;
+	sem->signal_fence.ring = 0;
+	sem->signal_fence.fence = 0;
+
+	return 0;
+}
+
+static int amdgpu_cs_unreference_sem(amdgpu_semaphore_handle sem)
+{
+	if (!sem)
+		return -EINVAL;
+
+	if (update_references(&sem->refcount, NULL))
+		free(sem);
+	return 0;
+}
+
+drm_public int amdgpu_cs_destroy_semaphore(amdgpu_semaphore_handle sem)
+{
+	return amdgpu_cs_unreference_sem(sem);
+}
+
+drm_public int amdgpu_cs_create_syncobj2(amdgpu_device_handle dev,
+					 uint32_t  flags,
+					 uint32_t *handle)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjCreate(dev->fd, flags, handle);
+}
+
+drm_public int amdgpu_cs_create_syncobj(amdgpu_device_handle dev,
+					uint32_t *handle)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjCreate(dev->fd, 0, handle);
+}
+
+drm_public int amdgpu_cs_destroy_syncobj(amdgpu_device_handle dev,
+					 uint32_t handle)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjDestroy(dev->fd, handle);
+}
+
+drm_public int amdgpu_cs_syncobj_reset(amdgpu_device_handle dev,
+				       const uint32_t *syncobjs,
+				       uint32_t syncobj_count)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjReset(dev->fd, syncobjs, syncobj_count);
+}
+
+drm_public int amdgpu_cs_syncobj_signal(amdgpu_device_handle dev,
+					const uint32_t *syncobjs,
+					uint32_t syncobj_count)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjSignal(dev->fd, syncobjs, syncobj_count);
+}
+
+drm_public int amdgpu_cs_syncobj_timeline_signal(amdgpu_device_handle dev,
+						 const uint32_t *syncobjs,
+						 uint64_t *points,
+						 uint32_t syncobj_count)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjTimelineSignal(dev->fd, syncobjs,
+					points, syncobj_count);
+}
+
+drm_public int amdgpu_cs_syncobj_wait(amdgpu_device_handle dev,
+				      uint32_t *handles, unsigned num_handles,
+				      int64_t timeout_nsec, unsigned flags,
+				      uint32_t *first_signaled)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjWait(dev->fd, handles, num_handles, timeout_nsec,
+			      flags, first_signaled);
+}
+
+drm_public int amdgpu_cs_syncobj_timeline_wait(amdgpu_device_handle dev,
+					       uint32_t *handles, uint64_t *points,
+					       unsigned num_handles,
+					       int64_t timeout_nsec, unsigned flags,
+					       uint32_t *first_signaled)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjTimelineWait(dev->fd, handles, points, num_handles,
+				      timeout_nsec, flags, first_signaled);
+}
+
+drm_public int amdgpu_cs_syncobj_query(amdgpu_device_handle dev,
+				       uint32_t *handles, uint64_t *points,
+				       unsigned num_handles)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjQuery(dev->fd, handles, points, num_handles);
+}
+
+drm_public int amdgpu_cs_syncobj_query2(amdgpu_device_handle dev,
+					uint32_t *handles, uint64_t *points,
+					unsigned num_handles, uint32_t flags)
+{
+	if (!dev)
+		return -EINVAL;
+
+	return drmSyncobjQuery2(dev->fd, handles, points, num_handles, flags);
+}
+
+drm_public int amdgpu_cs_export_syncobj(amdgpu_device_handle dev,
+					uint32_t handle,
+					int *shared_fd)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjHandleToFD(dev->fd, handle, shared_fd);
+}
+
+drm_public int amdgpu_cs_import_syncobj(amdgpu_device_handle dev,
+					int shared_fd,
+					uint32_t *handle)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjFDToHandle(dev->fd, shared_fd, handle);
+}
+
+drm_public int amdgpu_cs_syncobj_export_sync_file(amdgpu_device_handle dev,
+						  uint32_t syncobj,
+						  int *sync_file_fd)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjExportSyncFile(dev->fd, syncobj, sync_file_fd);
+}
+
+drm_public int amdgpu_cs_syncobj_import_sync_file(amdgpu_device_handle dev,
+						  uint32_t syncobj,
+						  int sync_file_fd)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjImportSyncFile(dev->fd, syncobj, sync_file_fd);
+}
+
+drm_public int amdgpu_cs_syncobj_export_sync_file2(amdgpu_device_handle dev,
+						   uint32_t syncobj,
+						   uint64_t point,
+						   uint32_t flags,
+						   int *sync_file_fd)
+{
+	uint32_t binary_handle;
+	int ret;
+
+	if (NULL == dev)
+		return -EINVAL;
+
+	if (!point)
+		return drmSyncobjExportSyncFile(dev->fd, syncobj, sync_file_fd);
+
+	ret = drmSyncobjCreate(dev->fd, 0, &binary_handle);
+	if (ret)
+		return ret;
+
+	ret = drmSyncobjTransfer(dev->fd, binary_handle, 0,
+				 syncobj, point, flags);
+	if (ret)
+		goto out;
+	ret = drmSyncobjExportSyncFile(dev->fd, binary_handle, sync_file_fd);
+out:
+	drmSyncobjDestroy(dev->fd, binary_handle);
+	return ret;
+}
+
+drm_public int amdgpu_cs_syncobj_import_sync_file2(amdgpu_device_handle dev,
+						   uint32_t syncobj,
+						   uint64_t point,
+						   int sync_file_fd)
+{
+	uint32_t binary_handle;
+	int ret;
+
+	if (NULL == dev)
+		return -EINVAL;
+
+	if (!point)
+		return drmSyncobjImportSyncFile(dev->fd, syncobj, sync_file_fd);
+
+	ret = drmSyncobjCreate(dev->fd, 0, &binary_handle);
+	if (ret)
+		return ret;
+	ret = drmSyncobjImportSyncFile(dev->fd, binary_handle, sync_file_fd);
+	if (ret)
+		goto out;
+	ret = drmSyncobjTransfer(dev->fd, syncobj, point,
+				 binary_handle, 0, 0);
+out:
+	drmSyncobjDestroy(dev->fd, binary_handle);
+	return ret;
+}
+
+drm_public int amdgpu_cs_syncobj_transfer(amdgpu_device_handle dev,
+					  uint32_t dst_handle,
+					  uint64_t dst_point,
+					  uint32_t src_handle,
+					  uint64_t src_point,
+					  uint32_t flags)
+{
+	if (NULL == dev)
+		return -EINVAL;
+
+	return drmSyncobjTransfer(dev->fd,
+				  dst_handle, dst_point,
+				  src_handle, src_point,
+				  flags);
+}
+
+drm_public int amdgpu_cs_submit_raw(amdgpu_device_handle dev,
+				    amdgpu_context_handle context,
+				    amdgpu_bo_list_handle bo_list_handle,
+				    int num_chunks,
+				    struct drm_amdgpu_cs_chunk *chunks,
+				    uint64_t *seq_no)
+{
+	union drm_amdgpu_cs cs;
+	uint64_t *chunk_array;
+	int i, r;
+	if (num_chunks == 0)
+		return -EINVAL;
+
+	memset(&cs, 0, sizeof(cs));
+	chunk_array = alloca(sizeof(uint64_t) * num_chunks);
+	for (i = 0; i < num_chunks; i++)
+		chunk_array[i] = (uint64_t)(uintptr_t)&chunks[i];
+	cs.in.chunks = (uint64_t)(uintptr_t)chunk_array;
+	cs.in.ctx_id = context->id;
+	cs.in.bo_list_handle = bo_list_handle ? bo_list_handle->handle : 0;
+	cs.in.num_chunks = num_chunks;
+	r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_CS,
+				&cs, sizeof(cs));
+	if (r)
+		return r;
+
+	if (seq_no)
+		*seq_no = cs.out.handle;
+	return 0;
+}
+
+drm_public int amdgpu_cs_submit_raw2(amdgpu_device_handle dev,
+				     amdgpu_context_handle context,
+				     uint32_t bo_list_handle,
+				     int num_chunks,
+				     struct drm_amdgpu_cs_chunk *chunks,
+				     uint64_t *seq_no)
+{
+	union drm_amdgpu_cs cs;
+	uint64_t *chunk_array;
+	int i, r;
+
+	memset(&cs, 0, sizeof(cs));
+	chunk_array = alloca(sizeof(uint64_t) * num_chunks);
+	for (i = 0; i < num_chunks; i++)
+		chunk_array[i] = (uint64_t)(uintptr_t)&chunks[i];
+	cs.in.chunks = (uint64_t)(uintptr_t)chunk_array;
+	cs.in.ctx_id = context->id;
+	cs.in.bo_list_handle = bo_list_handle;
+	cs.in.num_chunks = num_chunks;
+	r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_CS,
+				&cs, sizeof(cs));
+	if (!r && seq_no)
+		*seq_no = cs.out.handle;
+	return r;
+}
+
+drm_public void amdgpu_cs_chunk_fence_info_to_data(struct amdgpu_cs_fence_info *fence_info,
+					struct drm_amdgpu_cs_chunk_data *data)
+{
+	data->fence_data.handle = fence_info->handle->handle;
+	data->fence_data.offset = fence_info->offset * sizeof(uint64_t);
+}
+
+drm_public void amdgpu_cs_chunk_fence_to_dep(struct amdgpu_cs_fence *fence,
+					struct drm_amdgpu_cs_chunk_dep *dep)
+{
+	dep->ip_type = fence->ip_type;
+	dep->ip_instance = fence->ip_instance;
+	dep->ring = fence->ring;
+	dep->ctx_id = fence->context->id;
+	dep->handle = fence->fence;
+}
+
+drm_public int amdgpu_cs_fence_to_handle(amdgpu_device_handle dev,
+					 struct amdgpu_cs_fence *fence,
+					 uint32_t what,
+					 uint32_t *out_handle)
+{
+	union drm_amdgpu_fence_to_handle fth;
+	int r;
+
+	memset(&fth, 0, sizeof(fth));
+	fth.in.fence.ctx_id = fence->context->id;
+	fth.in.fence.ip_type = fence->ip_type;
+	fth.in.fence.ip_instance = fence->ip_instance;
+	fth.in.fence.ring = fence->ring;
+	fth.in.fence.seq_no = fence->fence;
+	fth.in.what = what;
+
+	r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_FENCE_TO_HANDLE,
+				&fth, sizeof(fth));
+	if (r == 0)
+		*out_handle = fth.out.handle;
+	return r;
+}