C++ (Cpp) ss_rng_mode_setの例

コード例 #1

ファイル: sunxi_ss_proc.c プロジェクト: alex-deng/a33_linux

static int ss_rng_start(ss_aes_ctx_t *ctx, u8 *rdata, unsigned int dlen)
{
	int ret = 0;
	int flow = ctx->comm.flow;

	ss_pending_clear(flow);
	ss_irq_enable(flow);
	ss_flow_enable(flow);

#ifdef SS_TRNG_ENABLE
	if (ctx->comm.flags & SS_FLAG_TRNG) {
		ss_method_set(SS_DIR_ENCRYPT, SS_METHOD_TRNG);
		ss_trng_osc_enable();
	}
	else
#endif
		ss_method_set(SS_DIR_ENCRYPT, SS_METHOD_PRNG);

	ss_rng_mode_set(SS_RNG_MODE_CONTINUE);

	ss_data_dst_set(ss_dev->flows[flow].buf_dst_dma);
#ifdef SS_TRNG_ENABLE
	ss_data_len_set(DIV_ROUND_UP(dlen, 32)*(32>>2)); /* align with 32 Bytes */
#else
	ss_data_len_set(DIV_ROUND_UP(dlen, 20)*(20>>2)); /* align with 20 Bytes */
#endif
	SS_DBG("Flow: %d, Request: %d, Aligned: %d \n", flow, dlen, DIV_ROUND_UP(dlen, 20)*5);
	dma_map_single(&ss_dev->pdev->dev, ss_dev->flows[flow].buf_dst, SS_DMA_BUF_SIZE, DMA_DEV_TO_MEM);

	ss_ctrl_start();
	ret = wait_for_completion_timeout(&ss_dev->flows[flow].done, msecs_to_jiffies(SS_WAIT_TIME));
	if (ret == 0) {
		SS_ERR("Timed out\n");
		ss_reset();
		return -ETIMEDOUT;
	}

	memcpy(rdata, ss_dev->flows[flow].buf_dst, dlen);
	dma_unmap_single(&ss_dev->pdev->dev, ss_dev->flows[flow].buf_dst_dma, SS_DMA_BUF_SIZE, DMA_DEV_TO_MEM);
	ss_irq_disable(flow);
	ret = dlen;

#ifdef SS_TRNG_ENABLE
	if (ctx->comm.flags & SS_FLAG_TRNG)
		ss_trng_osc_disable();
#endif

	ss_ctrl_stop();
	return ret;
}

コード例 #2

ファイル: sunxi_ss_proc.c プロジェクト: 925outer/BPI-M2P-bsp

static int ss_rng_start(ss_aes_ctx_t *ctx, u8 *rdata, unsigned int dlen)
{
	int ret = 0;
	int flow = ctx->comm.flow;

	ss_pending_clear(flow);
	ss_dma_disable(flow);

	ss_method_set(SS_DIR_ENCRYPT, SS_METHOD_PRNG);

	ss_rng_mode_set(SS_RNG_MODE_CONTINUE);

	ss_ctrl_start();
	ret = ss_random_rd(rdata, dlen);

	ss_ctrl_stop();
	return ret;
}