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IABSD.fr/xenocara/lib/libdrm/amdgpu/amdgpu_bo.c

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  • Author : jsg
    Date : 2026-05-19 08:28:31
    Hash : 2d955b4e
    Message : Merge libdrm 2.4.133

  • lib/libdrm/amdgpu/amdgpu_bo.c
  • /*
     * Copyright © 2014 Advanced Micro Devices, Inc.
     * All Rights Reserved.
     *
     * Permission is hereby granted, free of charge, to any person obtaining a
     * copy of this software and associated documentation files (the "Software"),
     * to deal in the Software without restriction, including without limitation
     * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     * and/or sell copies of the Software, and to permit persons to whom the
     * Software is furnished to do so, subject to the following conditions:
     *
     * The above copyright notice and this permission notice shall be included in
     * all copies or substantial portions of the Software.
     *
     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     * OTHER DEALINGS IN THE SOFTWARE.
     *
     */
    
    #include <stdlib.h>
    #include <stdio.h>
    #include <stdint.h>
    #include <string.h>
    #include <errno.h>
    #include <fcntl.h>
    #include <unistd.h>
    #include <sys/ioctl.h>
    #include <sys/mman.h>
    #include <sys/time.h>
    
    #include "libdrm_macros.h"
    #include "xf86drm.h"
    #include "amdgpu_drm.h"
    #include "amdgpu_internal.h"
    #include "util_math.h"
    
    static int amdgpu_bo_create(amdgpu_device_handle dev,
    			    uint64_t size,
    			    uint32_t handle,
    			    amdgpu_bo_handle *buf_handle)
    {
    	struct amdgpu_bo *bo;
    	int r;
    
    	bo = calloc(1, sizeof(struct amdgpu_bo));
    	if (!bo)
    		return -ENOMEM;
    
    	r = handle_table_insert(&dev->bo_handles, handle, bo);
    	if (r) {
    		free(bo);
    		return r;
    	}
    
    	atomic_set(&bo->refcount, 1);
    	bo->dev = dev;
    	bo->alloc_size = size;
    	bo->handle = handle;
    	pthread_mutex_init(&bo->cpu_access_mutex, NULL);
    
    	*buf_handle = bo;
    	return 0;
    }
    
    drm_public int amdgpu_bo_alloc(amdgpu_device_handle dev,
    			       struct amdgpu_bo_alloc_request *alloc_buffer,
    			       amdgpu_bo_handle *buf_handle)
    {
    	union drm_amdgpu_gem_create args;
    	int r;
    
    	if (!alloc_buffer || !buf_handle)
    		return -EINVAL;
    
    	memset(&args, 0, sizeof(args));
    	args.in.bo_size = alloc_buffer->alloc_size;
    	args.in.alignment = alloc_buffer->phys_alignment;
    
    	/* Set the placement. */
    	args.in.domains = alloc_buffer->preferred_heap;
    	args.in.domain_flags = alloc_buffer->flags;
    
    	/* Allocate the buffer with the preferred heap. */
    	r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_GEM_CREATE,
    				&args, sizeof(args));
    	if (r)
    		goto out;
    
    	pthread_mutex_lock(&dev->bo_table_mutex);
    	r = amdgpu_bo_create(dev, alloc_buffer->alloc_size, args.out.handle,
    			     buf_handle);
    	pthread_mutex_unlock(&dev->bo_table_mutex);
    	if (r) {
    		drmCloseBufferHandle(dev->fd, args.out.handle);
    	}
    
    out:
    	return r;
    }
    
    drm_public int amdgpu_bo_set_metadata(amdgpu_bo_handle bo,
    				      struct amdgpu_bo_metadata *info)
    {
    	struct drm_amdgpu_gem_metadata args = {};
    
    	if (!info)
    		return -EINVAL;
    
    	args.handle = bo->handle;
    	args.op = AMDGPU_GEM_METADATA_OP_SET_METADATA;
    	args.data.flags = info->flags;
    	args.data.tiling_info = info->tiling_info;
    
    	if (info->size_metadata > sizeof(args.data.data))
    		return -EINVAL;
    
    	if (info->size_metadata) {
    		args.data.data_size_bytes = info->size_metadata;
    		memcpy(args.data.data, info->umd_metadata, info->size_metadata);
    	}
    
    	return drmCommandWriteRead(bo->dev->fd,
    				   DRM_AMDGPU_GEM_METADATA,
    				   &args, sizeof(args));
    }
    
    drm_public int amdgpu_bo_query_info(amdgpu_bo_handle bo,
    				    struct amdgpu_bo_info *info)
    {
    	struct drm_amdgpu_gem_metadata metadata = {};
    	struct drm_amdgpu_gem_create_in bo_info = {};
    	struct drm_amdgpu_gem_op gem_op = {};
    	int r;
    
    	/* Validate the BO passed in */
    	if (!bo->handle || !info)
    		return -EINVAL;
    
    	/* Query metadata. */
    	metadata.handle = bo->handle;
    	metadata.op = AMDGPU_GEM_METADATA_OP_GET_METADATA;
    
    	r = drmCommandWriteRead(bo->dev->fd, DRM_AMDGPU_GEM_METADATA,
    				&metadata, sizeof(metadata));
    	if (r)
    		return r;
    
    	if (metadata.data.data_size_bytes >
    	    sizeof(info->metadata.umd_metadata))
    		return -EINVAL;
    
    	/* Query buffer info. */
    	gem_op.handle = bo->handle;
    	gem_op.op = AMDGPU_GEM_OP_GET_GEM_CREATE_INFO;
    	gem_op.value = (uintptr_t)&bo_info;
    
    	r = drmCommandWriteRead(bo->dev->fd, DRM_AMDGPU_GEM_OP,
    				&gem_op, sizeof(gem_op));
    	if (r)
    		return r;
    
    	memset(info, 0, sizeof(*info));
    	info->alloc_size = bo_info.bo_size;
    	info->phys_alignment = bo_info.alignment;
    	info->preferred_heap = bo_info.domains;
    	info->alloc_flags = bo_info.domain_flags;
    	info->metadata.flags = metadata.data.flags;
    	info->metadata.tiling_info = metadata.data.tiling_info;
    
    	info->metadata.size_metadata = metadata.data.data_size_bytes;
    	if (metadata.data.data_size_bytes > 0)
    		memcpy(info->metadata.umd_metadata, metadata.data.data,
    		       metadata.data.data_size_bytes);
    
    	return 0;
    }
    
    static int amdgpu_bo_export_flink(amdgpu_bo_handle bo)
    {
    	struct drm_gem_flink flink;
    	int fd, dma_fd;
    	uint32_t handle;
    	int r;
    
    	fd = bo->dev->fd;
    	handle = bo->handle;
    	if (bo->flink_name)
    		return 0;
    
    
    	if (bo->dev->flink_fd != bo->dev->fd) {
    		r = drmPrimeHandleToFD(bo->dev->fd, bo->handle, DRM_CLOEXEC,
    				       &dma_fd);
    		if (!r) {
    			r = drmPrimeFDToHandle(bo->dev->flink_fd, dma_fd, &handle);
    			close(dma_fd);
    		}
    		if (r)
    			return r;
    		fd = bo->dev->flink_fd;
    	}
    	memset(&flink, 0, sizeof(flink));
    	flink.handle = handle;
    
    	r = drmIoctl(fd, DRM_IOCTL_GEM_FLINK, &flink);
    	if (r)
    		return r;
    
    	bo->flink_name = flink.name;
    
    	if (bo->dev->flink_fd != bo->dev->fd)
    		drmCloseBufferHandle(bo->dev->flink_fd, handle);
    
    	pthread_mutex_lock(&bo->dev->bo_table_mutex);
    	r = handle_table_insert(&bo->dev->bo_flink_names, bo->flink_name, bo);
    	pthread_mutex_unlock(&bo->dev->bo_table_mutex);
    
    	return r;
    }
    
    drm_public int amdgpu_bo_export(amdgpu_bo_handle bo,
    				enum amdgpu_bo_handle_type type,
    				uint32_t *shared_handle)
    {
    	int r;
    
    	switch (type) {
    	case amdgpu_bo_handle_type_gem_flink_name:
    		r = amdgpu_bo_export_flink(bo);
    		if (r)
    			return r;
    
    		*shared_handle = bo->flink_name;
    		return 0;
    
    	case amdgpu_bo_handle_type_kms:
    	case amdgpu_bo_handle_type_kms_noimport:
    		*shared_handle = bo->handle;
    		return 0;
    
    	case amdgpu_bo_handle_type_dma_buf_fd:
    		return drmPrimeHandleToFD(bo->dev->fd, bo->handle,
    					  DRM_CLOEXEC | DRM_RDWR,
    					  (int*)shared_handle);
    	}
    	return -EINVAL;
    }
    
    drm_public int amdgpu_bo_import(amdgpu_device_handle dev,
    				enum amdgpu_bo_handle_type type,
    				uint32_t shared_handle,
    		     struct amdgpu_bo_import_result *output)
    {
    	struct drm_gem_open open_arg = {};
    	struct amdgpu_bo *bo = NULL;
    	uint32_t handle = 0, flink_name = 0;
    	uint64_t alloc_size = 0;
    	int r = 0;
    	int dma_fd;
    	uint64_t dma_buf_size = 0;
    
    	/* We must maintain a list of pairs <handle, bo>, so that we always
    	 * return the same amdgpu_bo instance for the same handle. */
    	pthread_mutex_lock(&dev->bo_table_mutex);
    
    	/* Convert a DMA buf handle to a KMS handle now. */
    	if (type == amdgpu_bo_handle_type_dma_buf_fd) {
    		off_t size;
    
    		/* Get a KMS handle. */
    		r = drmPrimeFDToHandle(dev->fd, shared_handle, &handle);
    		if (r)
    			goto unlock;
    
    		/* Query the buffer size. */
    		size = lseek(shared_handle, 0, SEEK_END);
    		if (size == (off_t)-1) {
    			r = -errno;
    			goto free_bo_handle;
    		}
    		lseek(shared_handle, 0, SEEK_SET);
    
    		dma_buf_size = size;
    		shared_handle = handle;
    	}
    
    	/* If we have already created a buffer with this handle, find it. */
    	switch (type) {
    	case amdgpu_bo_handle_type_gem_flink_name:
    		bo = handle_table_lookup(&dev->bo_flink_names, shared_handle);
    		break;
    
    	case amdgpu_bo_handle_type_dma_buf_fd:
    		bo = handle_table_lookup(&dev->bo_handles, shared_handle);
    		break;
    
    	case amdgpu_bo_handle_type_kms:
    	case amdgpu_bo_handle_type_kms_noimport:
    		/* Importing a KMS handle in not allowed. */
    		r = -EPERM;
    		goto unlock;
    
    	default:
    		r = -EINVAL;
    		goto unlock;
    	}
    
    	if (bo) {
    		/* The buffer already exists, just bump the refcount. */
    		atomic_inc(&bo->refcount);
    		pthread_mutex_unlock(&dev->bo_table_mutex);
    
    		output->buf_handle = bo;
    		output->alloc_size = bo->alloc_size;
    		return 0;
    	}
    
    	/* Open the handle. */
    	switch (type) {
    	case amdgpu_bo_handle_type_gem_flink_name:
    		open_arg.name = shared_handle;
    		r = drmIoctl(dev->flink_fd, DRM_IOCTL_GEM_OPEN, &open_arg);
    		if (r)
    			goto unlock;
    
    		flink_name = shared_handle;
    		handle = open_arg.handle;
    		alloc_size = open_arg.size;
    		if (dev->flink_fd != dev->fd) {
    			r = drmPrimeHandleToFD(dev->flink_fd, handle,
    					       DRM_CLOEXEC, &dma_fd);
    			if (r)
    				goto free_bo_handle;
    			r = drmPrimeFDToHandle(dev->fd, dma_fd, &handle);
    			close(dma_fd);
    			if (r)
    				goto free_bo_handle;
    			r = drmCloseBufferHandle(dev->flink_fd,
    						 open_arg.handle);
    			if (r)
    				goto free_bo_handle;
    		}
    		open_arg.handle = 0;
    		break;
    
    	case amdgpu_bo_handle_type_dma_buf_fd:
    		handle = shared_handle;
    		alloc_size = dma_buf_size;
    		break;
    
    	case amdgpu_bo_handle_type_kms:
    	case amdgpu_bo_handle_type_kms_noimport:
    		assert(0); /* unreachable */
    	}
    
    	/* Initialize it. */
    	r = amdgpu_bo_create(dev, alloc_size, handle, &bo);
    	if (r)
    		goto free_bo_handle;
    
    	if (flink_name) {
    		bo->flink_name = flink_name;
    		r = handle_table_insert(&dev->bo_flink_names, flink_name,
    					bo);
    		if (r)
    			goto free_bo_handle;
    
    	}
    
    	output->buf_handle = bo;
    	output->alloc_size = bo->alloc_size;
    	pthread_mutex_unlock(&dev->bo_table_mutex);
    	return 0;
    
    free_bo_handle:
    	if (flink_name && open_arg.handle)
    		drmCloseBufferHandle(dev->flink_fd, open_arg.handle);
    
    	if (bo)
    		amdgpu_bo_free(bo);
    	else
    		drmCloseBufferHandle(dev->fd, handle);
    unlock:
    	pthread_mutex_unlock(&dev->bo_table_mutex);
    	return r;
    }
    
    drm_public int amdgpu_bo_free(amdgpu_bo_handle buf_handle)
    {
    	struct amdgpu_device *dev;
    	struct amdgpu_bo *bo = buf_handle;
    
    	assert(bo != NULL);
    	dev = bo->dev;
    	pthread_mutex_lock(&dev->bo_table_mutex);
    
    	if (update_references(&bo->refcount, NULL)) {
    		/* Remove the buffer from the hash tables. */
    		handle_table_remove(&dev->bo_handles, bo->handle);
    
    		if (bo->flink_name)
    			handle_table_remove(&dev->bo_flink_names,
    					    bo->flink_name);
    
    		/* Release CPU access. */
    		if (bo->cpu_map_count > 0) {
    			bo->cpu_map_count = 1;
    			amdgpu_bo_cpu_unmap(bo);
    		}
    
    		drmCloseBufferHandle(dev->fd, bo->handle);
    		pthread_mutex_destroy(&bo->cpu_access_mutex);
    		free(bo);
    	}
    
    	pthread_mutex_unlock(&dev->bo_table_mutex);
    
    	return 0;
    }
    
    drm_public void amdgpu_bo_inc_ref(amdgpu_bo_handle bo)
    {
    	atomic_inc(&bo->refcount);
    }
    
    drm_public int amdgpu_bo_cpu_map(amdgpu_bo_handle bo, void **cpu)
    {
    	union drm_amdgpu_gem_mmap args;
    	void *ptr;
    	int r;
    
    	pthread_mutex_lock(&bo->cpu_access_mutex);
    
    	if (bo->cpu_ptr) {
    		/* already mapped */
    		assert(bo->cpu_map_count > 0);
    		bo->cpu_map_count++;
    		*cpu = bo->cpu_ptr;
    		pthread_mutex_unlock(&bo->cpu_access_mutex);
    		return 0;
    	}
    
    	assert(bo->cpu_map_count == 0);
    
    	memset(&args, 0, sizeof(args));
    
    	/* Query the buffer address (args.addr_ptr).
    	 * The kernel driver ignores the offset and size parameters. */
    	args.in.handle = bo->handle;
    
    	r = drmCommandWriteRead(bo->dev->fd, DRM_AMDGPU_GEM_MMAP, &args,
    				sizeof(args));
    	if (r) {
    		pthread_mutex_unlock(&bo->cpu_access_mutex);
    		return r;
    	}
    
    	/* Map the buffer. */
    	ptr = drm_mmap(NULL, bo->alloc_size, PROT_READ | PROT_WRITE, MAP_SHARED,
    		       bo->dev->fd, args.out.addr_ptr);
    	if (ptr == MAP_FAILED) {
    		pthread_mutex_unlock(&bo->cpu_access_mutex);
    		return -errno;
    	}
    
    	bo->cpu_ptr = ptr;
    	bo->cpu_map_count = 1;
    	pthread_mutex_unlock(&bo->cpu_access_mutex);
    
    	*cpu = ptr;
    	return 0;
    }
    
    drm_public int amdgpu_bo_cpu_unmap(amdgpu_bo_handle bo)
    {
    	int r;
    
    	pthread_mutex_lock(&bo->cpu_access_mutex);
    	assert(bo->cpu_map_count >= 0);
    
    	if (bo->cpu_map_count == 0) {
    		/* not mapped */
    		pthread_mutex_unlock(&bo->cpu_access_mutex);
    		return -EINVAL;
    	}
    
    	bo->cpu_map_count--;
    	if (bo->cpu_map_count > 0) {
    		/* mapped multiple times */
    		pthread_mutex_unlock(&bo->cpu_access_mutex);
    		return 0;
    	}
    
    	r = drm_munmap(bo->cpu_ptr, bo->alloc_size) == 0 ? 0 : -errno;
    	bo->cpu_ptr = NULL;
    	pthread_mutex_unlock(&bo->cpu_access_mutex);
    	return r;
    }
    
    drm_public int amdgpu_query_buffer_size_alignment(amdgpu_device_handle dev,
    				struct amdgpu_buffer_size_alignments *info)
    {
    	info->size_local = dev->dev_info.pte_fragment_size;
    	info->size_remote = dev->dev_info.gart_page_size;
    	return 0;
    }
    
    drm_public int amdgpu_bo_wait_for_idle(amdgpu_bo_handle bo,
    				       uint64_t timeout_ns,
    			    bool *busy)
    {
    	union drm_amdgpu_gem_wait_idle args;
    	int r;
    
    	memset(&args, 0, sizeof(args));
    	args.in.handle = bo->handle;
    	args.in.timeout = amdgpu_cs_calculate_timeout(timeout_ns);
    
    	r = drmCommandWriteRead(bo->dev->fd, DRM_AMDGPU_GEM_WAIT_IDLE,
    				&args, sizeof(args));
    
    	if (r == 0) {
    		*busy = args.out.status;
    		return 0;
    	} else {
    		fprintf(stderr, "amdgpu: GEM_WAIT_IDLE failed with %i\n", r);
    		return r;
    	}
    }
    
    drm_public int amdgpu_find_bo_by_cpu_mapping(amdgpu_device_handle dev,
    					     void *cpu,
    					     uint64_t size,
    					     amdgpu_bo_handle *buf_handle,
    					     uint64_t *offset_in_bo)
    {
    	struct amdgpu_bo *bo = NULL;
    	uint32_t i;
    	int r = 0;
    
    	if (cpu == NULL || size == 0)
    		return -EINVAL;
    
    	/*
    	 * Workaround for a buggy application which tries to import previously
    	 * exposed CPU pointers. If we find a real world use case we should
    	 * improve that by asking the kernel for the right handle.
    	 */
    	pthread_mutex_lock(&dev->bo_table_mutex);
    	for (i = 0; i < dev->bo_handles.max_key; i++) {
    		bo = handle_table_lookup(&dev->bo_handles, i);
    		if (!bo || !bo->cpu_ptr || size > bo->alloc_size)
    			continue;
    		if (cpu >= bo->cpu_ptr &&
    		    cpu < (void*)((uintptr_t)bo->cpu_ptr + (size_t)bo->alloc_size))
    			break;
    	}
    
    	if (i < dev->bo_handles.max_key) {
    		atomic_inc(&bo->refcount);
    		*buf_handle = bo;
    		*offset_in_bo = (uintptr_t)cpu - (uintptr_t)bo->cpu_ptr;
    	} else {
    		*buf_handle = NULL;
    		*offset_in_bo = 0;
    		r = -ENXIO;
    	}
    	pthread_mutex_unlock(&dev->bo_table_mutex);
    
    	return r;
    }
    
    drm_public int amdgpu_create_bo_from_user_mem(amdgpu_device_handle dev,
    					      void *cpu,
    					      uint64_t size,
    					      amdgpu_bo_handle *buf_handle)
    {
    	int r;
    	struct drm_amdgpu_gem_userptr args;
    
    	args.addr = (uintptr_t)cpu;
    	args.flags = AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_REGISTER |
    		AMDGPU_GEM_USERPTR_VALIDATE;
    	args.size = size;
    	r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_GEM_USERPTR,
    				&args, sizeof(args));
    	if (r)
    		goto out;
    
    	pthread_mutex_lock(&dev->bo_table_mutex);
    	r = amdgpu_bo_create(dev, size, args.handle, buf_handle);
    	pthread_mutex_unlock(&dev->bo_table_mutex);
    	if (r) {
    		drmCloseBufferHandle(dev->fd, args.handle);
    	}
    
    out:
    	return r;
    }
    
    drm_public int amdgpu_bo_list_create_raw(amdgpu_device_handle dev,
    					 uint32_t number_of_buffers,
    					 struct drm_amdgpu_bo_list_entry *buffers,
    					 uint32_t *result)
    {
    	union drm_amdgpu_bo_list args;
    	int r;
    
    	memset(&args, 0, sizeof(args));
    	args.in.operation = AMDGPU_BO_LIST_OP_CREATE;
    	args.in.bo_number = number_of_buffers;
    	args.in.bo_info_size = sizeof(struct drm_amdgpu_bo_list_entry);
    	args.in.bo_info_ptr = (uint64_t)(uintptr_t)buffers;
    
    	r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_BO_LIST,
    				&args, sizeof(args));
    	if (!r)
    		*result = args.out.list_handle;
    	return r;
    }
    
    drm_public int amdgpu_bo_list_destroy_raw(amdgpu_device_handle dev,
    					  uint32_t bo_list)
    {
    	union drm_amdgpu_bo_list args;
    
    	memset(&args, 0, sizeof(args));
    	args.in.operation = AMDGPU_BO_LIST_OP_DESTROY;
    	args.in.list_handle = bo_list;
    
    	return drmCommandWriteRead(dev->fd, DRM_AMDGPU_BO_LIST,
    				   &args, sizeof(args));
    }
    
    drm_public int amdgpu_bo_list_create(amdgpu_device_handle dev,
    				     uint32_t number_of_resources,
    				     amdgpu_bo_handle *resources,
    				     uint8_t *resource_prios,
    				     amdgpu_bo_list_handle *result)
    {
    	struct drm_amdgpu_bo_list_entry *list;
    	union drm_amdgpu_bo_list args;
    	unsigned i;
    	int r;
    
    	if (!number_of_resources || !resources)
    		return -EINVAL;
    
    	/* overflow check for multiplication */
    	if (number_of_resources > UINT32_MAX / sizeof(struct drm_amdgpu_bo_list_entry))
    		return -EINVAL;
    
    	list = malloc(number_of_resources * sizeof(struct drm_amdgpu_bo_list_entry));
    	if (!list)
    		return -ENOMEM;
    
    	*result = malloc(sizeof(struct amdgpu_bo_list));
    	if (!*result) {
    		free(list);
    		return -ENOMEM;
    	}
    
    	memset(&args, 0, sizeof(args));
    	args.in.operation = AMDGPU_BO_LIST_OP_CREATE;
    	args.in.bo_number = number_of_resources;
    	args.in.bo_info_size = sizeof(struct drm_amdgpu_bo_list_entry);
    	args.in.bo_info_ptr = (uint64_t)(uintptr_t)list;
    
    	for (i = 0; i < number_of_resources; i++) {
    		list[i].bo_handle = resources[i]->handle;
    		if (resource_prios)
    			list[i].bo_priority = resource_prios[i];
    		else
    			list[i].bo_priority = 0;
    	}
    
    	r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_BO_LIST,
    				&args, sizeof(args));
    	free(list);
    	if (r) {
    		free(*result);
    		return r;
    	}
    
    	(*result)->dev = dev;
    	(*result)->handle = args.out.list_handle;
    	return 0;
    }
    
    drm_public int amdgpu_bo_list_destroy(amdgpu_bo_list_handle list)
    {
    	union drm_amdgpu_bo_list args;
    	int r;
    
    	memset(&args, 0, sizeof(args));
    	args.in.operation = AMDGPU_BO_LIST_OP_DESTROY;
    	args.in.list_handle = list->handle;
    
    	r = drmCommandWriteRead(list->dev->fd, DRM_AMDGPU_BO_LIST,
    				&args, sizeof(args));
    
    	if (!r)
    		free(list);
    
    	return r;
    }
    
    drm_public int amdgpu_bo_list_update(amdgpu_bo_list_handle handle,
    				     uint32_t number_of_resources,
    				     amdgpu_bo_handle *resources,
    				     uint8_t *resource_prios)
    {
    	struct drm_amdgpu_bo_list_entry *list;
    	union drm_amdgpu_bo_list args;
    	unsigned i;
    	int r;
    
    	if (!number_of_resources)
    		return -EINVAL;
    
    	/* overflow check for multiplication */
    	if (number_of_resources > UINT32_MAX / sizeof(struct drm_amdgpu_bo_list_entry))
    		return -EINVAL;
    
    	list = malloc(number_of_resources * sizeof(struct drm_amdgpu_bo_list_entry));
    	if (!list)
    		return -ENOMEM;
    
    	args.in.operation = AMDGPU_BO_LIST_OP_UPDATE;
    	args.in.list_handle = handle->handle;
    	args.in.bo_number = number_of_resources;
    	args.in.bo_info_size = sizeof(struct drm_amdgpu_bo_list_entry);
    	args.in.bo_info_ptr = (uintptr_t)list;
    
    	for (i = 0; i < number_of_resources; i++) {
    		list[i].bo_handle = resources[i]->handle;
    		if (resource_prios)
    			list[i].bo_priority = resource_prios[i];
    		else
    			list[i].bo_priority = 0;
    	}
    
    	r = drmCommandWriteRead(handle->dev->fd, DRM_AMDGPU_BO_LIST,
    				&args, sizeof(args));
    	free(list);
    	return r;
    }
    
    drm_public int amdgpu_bo_va_op(amdgpu_bo_handle bo,
    			       uint64_t offset,
    			       uint64_t size,
    			       uint64_t addr,
    			       uint64_t flags,
    			       uint32_t ops)
    {
    	amdgpu_device_handle dev = bo->dev;
    
    	size = ALIGN(size, getpagesize());
    
    	return amdgpu_bo_va_op_raw(dev, bo, offset, size, addr,
    				   AMDGPU_VM_PAGE_READABLE |
    				   AMDGPU_VM_PAGE_WRITEABLE |
    				   AMDGPU_VM_PAGE_EXECUTABLE, ops);
    }
    
    drm_public int amdgpu_bo_va_op_raw(amdgpu_device_handle dev,
    				   amdgpu_bo_handle bo,
    				   uint64_t offset,
    				   uint64_t size,
    				   uint64_t addr,
    				   uint64_t flags,
    				   uint32_t ops)
    {
    	struct drm_amdgpu_gem_va va;
    	int r;
    
    	if (ops != AMDGPU_VA_OP_MAP && ops != AMDGPU_VA_OP_UNMAP &&
    	    ops != AMDGPU_VA_OP_REPLACE && ops != AMDGPU_VA_OP_CLEAR)
    		return -EINVAL;
    
    	memset(&va, 0, sizeof(va));
    	va.handle = bo ? bo->handle : 0;
    	va.operation = ops;
    	va.flags = flags;
    	va.va_address = addr;
    	va.offset_in_bo = offset;
    	va.map_size = size;
    
    	r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_GEM_VA, &va, sizeof(va));
    
    	return r;
    }
    
    drm_public int amdgpu_bo_va_op_raw2(amdgpu_device_handle dev,
    				    amdgpu_bo_handle bo,
    				    uint64_t offset,
    				    uint64_t size,
    				    uint64_t addr,
    				    uint64_t flags,
    				    uint32_t ops,
    				    uint32_t vm_timeline_syncobj_out,
    				    uint64_t vm_timeline_point,
    				    uint64_t input_fence_syncobj_handles,
    				    uint32_t num_syncobj_handles)
    {
    	struct drm_amdgpu_gem_va va;
    	int r;
    
    	if (ops != AMDGPU_VA_OP_MAP && ops != AMDGPU_VA_OP_UNMAP &&
    	    ops != AMDGPU_VA_OP_REPLACE && ops != AMDGPU_VA_OP_CLEAR)
    		return -EINVAL;
    
    	memset(&va, 0, sizeof(va));
    	va.handle = bo ? bo->handle : 0;
    	va.operation = ops;
    	va.flags = flags;
    	va.va_address = addr;
    	va.offset_in_bo = offset;
    	va.map_size = size;
    	va.vm_timeline_syncobj_out = vm_timeline_syncobj_out;
    	va.vm_timeline_point = vm_timeline_point;
    	va.input_fence_syncobj_handles = input_fence_syncobj_handles;
    	va.num_syncobj_handles = num_syncobj_handles;
    
    	r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_GEM_VA, &va, sizeof(va));
    
    	return r;
    }