C++ (Cpp) handle_phys Examples

Example #1

phys_addr_t nvmap_pin(struct nvmap_client *client,
			struct nvmap_handle_ref *ref)
{
	struct nvmap_handle *h;
	phys_addr_t phys;
	int ret = 0;

	h = nvmap_handle_get(ref->handle);
	if (WARN_ON(!h))
		return -EINVAL;

	atomic_inc(&ref->pin);

	if (WARN_ON(mutex_lock_interruptible(&client->share->pin_lock))) {
		ret = -EINTR;
	} else {
		ret = wait_pin_array_locked(client, &h, 1);
		mutex_unlock(&client->share->pin_lock);
	}

	if (ret) {
		atomic_dec(&ref->pin);
		nvmap_handle_put(h);
	} else {
		if (h->heap_pgalloc && h->pgalloc.dirty)
			map_iovmm_area(h);
		phys = handle_phys(h);
	}

	return ret ?: phys;
}

Example #2

phys_addr_t nvmap_handle_address(struct nvmap_client *c, unsigned long id)
{
	struct nvmap_handle *h;
	phys_addr_t phys;

	h = nvmap_get_handle_id(c, id);
	if (!h)
		return -EPERM;
	mutex_lock(&h->lock);
	phys = handle_phys(h);
	mutex_unlock(&h->lock);
	nvmap_handle_put(h);

	return phys;
}

Example #3

File: nvmap.c Project: Mrchenkeyu/android_kernel_zte_pluto

/*
 * Pin handle without slow validation step
 */
phys_addr_t _nvmap_pin(struct nvmap_client *client,
			struct nvmap_handle_ref *ref)
{
	int ret = 0;
	struct nvmap_handle *h;
	phys_addr_t phys;

	if (!ref)
		return -EINVAL;

	h = ref->handle;

	if (WARN_ON(!h))
		return -EINVAL;

	h = nvmap_handle_get(h);

	atomic_inc(&ref->pin);

	if (WARN_ON(mutex_lock_interruptible(&client->share->pin_lock))) {
		ret = -EINTR;
	} else {
		ret = wait_pin_array_locked(client, &h, 1);
		mutex_unlock(&client->share->pin_lock);
	}

	if (ret) {
		goto err_out;
	} else {
		if (h->heap_pgalloc && h->pgalloc.dirty)
			ret = map_iovmm_area(h);
		if (ret)
			goto err_out_unpin;
		phys = handle_phys(h);
	}

	return phys;

err_out_unpin:
	nvmap_handle_get(h);
	handle_unpin(client, h, true);
err_out:
	atomic_dec(&ref->pin);
	nvmap_handle_put(h);
	return ret;
}

Example #4

/*
 * Get physical address of the handle. Handle should be
 * already validated and pinned.
 */
phys_addr_t _nvmap_get_addr_from_id(u32 id)
{
	struct nvmap_handle *h = (struct nvmap_handle *)id;
	return handle_phys(h);
}