Exemplos de tee_shm_alloc em C++ (Cpp)

Exemplo n.º 1

Arquivo: optee-rng.c Projeto: Anjali05/linux

static int optee_rng_init(struct hwrng *rng)
{
	struct optee_rng_private *pvt_data = to_optee_rng_private(rng);
	struct tee_shm *entropy_shm_pool = NULL;

	entropy_shm_pool = tee_shm_alloc(pvt_data->ctx, MAX_ENTROPY_REQ_SZ,
					 TEE_SHM_MAPPED | TEE_SHM_DMA_BUF);
	if (IS_ERR(entropy_shm_pool)) {
		dev_err(pvt_data->dev, "tee_shm_alloc failed\n");
		return PTR_ERR(entropy_shm_pool);
	}

	pvt_data->entropy_shm_pool = entropy_shm_pool;

	return 0;
}

Exemplo n.º 2

Arquivo: tee_kernel_api.c Projeto: sunyanbang/optee_linuxdriver

TEEC_Result TEEC_AllocateSharedMemory(TEEC_Context *context,
				      TEEC_SharedMemory *sharedMem)
{
	struct tee_shm *tee_shm;
	struct tee_context *ctx;

	if (!context || !sharedMem)
		return TEEC_ERROR_BAD_PARAMETERS;

	/* TODO fixme will not work on 64-bit platform */
	ctx = (struct tee_context *)(uintptr_t)context->fd;

	tee_shm = tee_shm_alloc(ctx, sharedMem->size, sharedMem->flags);
	if (IS_ERR_OR_NULL(tee_shm)) {
		pr_err
		    ("TEEC_AllocateSharedMemory: tee_shm_allocate(%zu) failed\n",
		     sharedMem->size);
		return TEEC_ERROR_OUT_OF_MEMORY;
	}

	pr_info("TEEC_AllocateSharedMemory (%zu) => paddr = %p, flags %x\n",
		sharedMem->size, (void *)tee_shm->paddr, tee_shm->flags);

	sharedMem->buffer = ioremap_nocache(tee_shm->paddr, sharedMem->size);
	if (!sharedMem->buffer) {
		pr_err("TEEC_AllocateSharedMemory: ioremap_nocache(%p, %zu) failed\n",
		     (void *)tee_shm->paddr, sharedMem->size);
		tee_shm_free(tee_shm);
		return TEEC_ERROR_OUT_OF_MEMORY;
	}

	sharedMem->registered = 0;
	sharedMem->flags |= tee_shm->flags;
	/* TODO fixme will not work on 64-bit platform */
	sharedMem->d.fd = (int)(uintptr_t)tee_shm;
	BUG_ON(tee_shm != (struct tee_shm *)(uintptr_t)sharedMem->d.fd);

	return TEEC_SUCCESS;
}

Exemplo n.º 3

Arquivo: tee_shm.c Projeto: flowher/optee_linuxdriver

struct tee_shm *tee_shm_alloc_from_rpc(struct tee *tee, size_t size)
{
	struct tee_shm *shm;

	INMSG();

	shm = tee_shm_alloc(tee, size, TEE_SHM_TEMP | TEE_SHM_FROM_RPC);
	if (IS_ERR_OR_NULL(shm)) {
		dev_err(_DEV(tee), "%s: buffer allocation failed (%ld)\n",
			__func__, PTR_ERR(shm));
		goto out;
	}

	mutex_lock(&tee->lock);
	tee_inc_stats(&tee->stats[TEE_STATS_SHM_IDX]);
	list_add_tail(&shm->entry, &tee->list_rpc_shm);
	mutex_unlock(&tee->lock);
	shm->ctx = NULL;

out:
	OUTMSGX(shm);
	return shm;
}