Esempi in C++ (Cpp) per set_queue_properties_from_user

Esempio n. 1

File: kfd_chardev.c Progetto: pursuehappiness/linux

static int kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p,
					void *data)
{
	struct kfd_ioctl_create_queue_args *args = data;
	struct kfd_dev *dev;
	int err = 0;
	unsigned int queue_id;
	struct kfd_process_device *pdd;
	struct queue_properties q_properties;

	memset(&q_properties, 0, sizeof(struct queue_properties));

	pr_debug("kfd: creating queue ioctl\n");

	err = set_queue_properties_from_user(&q_properties, args);
	if (err)
		return err;

	pr_debug("kfd: looking for gpu id 0x%x\n", args->gpu_id);
	dev = kfd_device_by_id(args->gpu_id);
	if (dev == NULL) {
		pr_debug("kfd: gpu id 0x%x was not found\n", args->gpu_id);
		return -EINVAL;
	}

	mutex_lock(&p->mutex);

	pdd = kfd_bind_process_to_device(dev, p);
	if (IS_ERR(pdd)) {
		err = -ESRCH;
		goto err_bind_process;
	}

	pr_debug("kfd: creating queue for PASID %d on GPU 0x%x\n",
			p->pasid,
			dev->id);

	err = pqm_create_queue(&p->pqm, dev, filep, &q_properties,
				0, q_properties.type, &queue_id);
	if (err != 0)
		goto err_create_queue;

	args->queue_id = queue_id;


	/* Return gpu_id as doorbell offset for mmap usage */
	args->doorbell_offset = (KFD_MMAP_DOORBELL_MASK | args->gpu_id);
	args->doorbell_offset <<= PAGE_SHIFT;

	mutex_unlock(&p->mutex);

	pr_debug("kfd: queue id %d was created successfully\n", args->queue_id);

	pr_debug("ring buffer address == 0x%016llX\n",
			args->ring_base_address);

	pr_debug("read ptr address    == 0x%016llX\n",
			args->read_pointer_address);

	pr_debug("write ptr address   == 0x%016llX\n",
			args->write_pointer_address);

	return 0;

err_create_queue:
err_bind_process:
	mutex_unlock(&p->mutex);
	return err;
}

Esempio n. 2

File: kfd_chardev.c Progetto: 383530895/linux

static long kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p,
					void __user *arg)
{
	struct kfd_ioctl_create_queue_args args;
	struct kfd_dev *dev;
	int err = 0;
	unsigned int queue_id;
	struct kfd_process_device *pdd;
	struct queue_properties q_properties;

	memset(&q_properties, 0, sizeof(struct queue_properties));

	if (copy_from_user(&args, arg, sizeof(args)))
		return -EFAULT;

	pr_debug("kfd: creating queue ioctl\n");

	err = set_queue_properties_from_user(&q_properties, &args);
	if (err)
		return err;

	dev = kfd_device_by_id(args.gpu_id);
	if (dev == NULL)
		return -EINVAL;

	mutex_lock(&p->mutex);

	pdd = kfd_bind_process_to_device(dev, p);
	if (IS_ERR(pdd)) {
		err = PTR_ERR(pdd);
		goto err_bind_process;
	}

	pr_debug("kfd: creating queue for PASID %d on GPU 0x%x\n",
			p->pasid,
			dev->id);

	err = pqm_create_queue(&p->pqm, dev, filep, &q_properties, 0,
				KFD_QUEUE_TYPE_COMPUTE, &queue_id);
	if (err != 0)
		goto err_create_queue;

	args.queue_id = queue_id;

	/* Return gpu_id as doorbell offset for mmap usage */
	args.doorbell_offset = args.gpu_id << PAGE_SHIFT;

	if (copy_to_user(arg, &args, sizeof(args))) {
		err = -EFAULT;
		goto err_copy_args_out;
	}

	mutex_unlock(&p->mutex);

	pr_debug("kfd: queue id %d was created successfully\n", args.queue_id);

	pr_debug("ring buffer address == 0x%016llX\n",
			args.ring_base_address);

	pr_debug("read ptr address    == 0x%016llX\n",
			args.read_pointer_address);

	pr_debug("write ptr address   == 0x%016llX\n",
			args.write_pointer_address);

	return 0;

err_copy_args_out:
	pqm_destroy_queue(&p->pqm, queue_id);
err_create_queue:
err_bind_process:
	mutex_unlock(&p->mutex);
	return err;
}