Ejemplos de ss_dma_dst_config en C++ (Cpp)

Ejemplo n.º 1

Archivo: sunxi_ss_proc.c Proyecto: 925outer/BPI-M2P-bsp

static int ss_aes_start(ss_aes_ctx_t *ctx, ss_aes_req_ctx_t *req_ctx, int len)
{
	int ret = 0;
	int flow = ctx->comm.flow;

	ss_pending_clear(flow);
	ss_dma_enable(flow);
	ss_fifo_init();

	ss_method_set(req_ctx->dir, req_ctx->type);
	ss_aes_mode_set(req_ctx->mode);

	SS_DBG("Flow: %d, Dir: %d, Method: %d, Mode: %d, len: %d \n", flow, req_ctx->dir,
			req_ctx->type, req_ctx->mode, len);

	init_completion(&req_ctx->done);

	if (ss_dma_prepare(&req_ctx->dma_src))
		return -EBUSY;		
	ss_dma_prepare(&req_ctx->dma_dst);
	ss_dma_src_config(ss_dev, ctx, req_ctx, len, 0);
	ss_dma_dst_config(ss_dev, ctx, req_ctx, len, 1);

	ss_dma_start(&req_ctx->dma_dst);
	ss_ctrl_start();
	ss_dma_start(&req_ctx->dma_src);

	ret = wait_for_completion_timeout(&req_ctx->done, msecs_to_jiffies(SS_WAIT_TIME));
	if (ret == 0) {
		SS_ERR("Timed out\n");
		ss_reset();
		return -ETIMEDOUT;
	}

	ss_ctrl_stop();
	ss_dma_disable(flow);
	ss_dma_release(ss_dev, &req_ctx->dma_src);
	ss_dma_release(ss_dev, &req_ctx->dma_dst);

	return 0;
}

Ejemplo n.º 2

Archivo: sunxi_ss_proc.c Proyecto: alex-deng/a33_linux

static int ss_aes_start(ss_aes_ctx_t *ctx, ss_aes_req_ctx_t *req_ctx, int len)
{
	int ret = 0;
	int flow = ctx->comm.flow;

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

	ss_method_set(req_ctx->dir, req_ctx->type);
	ss_aes_mode_set(req_ctx->mode);

	SS_DBG("Flow: %d, Dir: %d, Method: %d, Mode: %d, len: %d \n", flow, req_ctx->dir,
			req_ctx->type, req_ctx->mode, len);

	init_completion(&req_ctx->done);

	/* 1. Copy data from user space to sss->flows[flow].buf_src. */
	if (ss_dma_prepare(&req_ctx->dma_src))
		return -EBUSY;
#ifdef SS_CTR_MODE_ENABLE
	if ((req_ctx->mode == SS_AES_MODE_CTR) && ((len%AES_BLOCK_SIZE) != 0))
		memset(&ss_dev->flows[flow].buf_src[len], 0, AES_BLOCK_SIZE);
#endif
	ss_dma_src_config(ss_dev, ctx, req_ctx, len, 1);
	ss_dma_start(&req_ctx->dma_src);
	ret = wait_for_completion_timeout(&req_ctx->done, msecs_to_jiffies(SS_WAIT_TIME));
	if (ret == 0) {
		SS_ERR("Timed out\n");
		return -ETIMEDOUT;
	}

	/* 2. Start the SS. */
	ss_data_src_set(ss_dev->flows[flow].buf_src_dma);
	ss_data_dst_set(ss_dev->flows[flow].buf_dst_dma);
	SS_DBG("ss_dev->buf_dst_dma = %#x\n", ss_dev->flows[flow].buf_dst_dma);
#ifdef SS_CTS_MODE_ENABLE
	if (req_ctx->mode == SS_AES_MODE_CTS) {
		ss_data_len_set(len);
		if (len < SZ_4K) /* A bad way to determin the last packet of CTS mode. */
			ss_cts_last();
	}
	else
#endif
	ss_data_len_set(DIV_ROUND_UP(len, AES_BLOCK_SIZE)*4);

	ss_ctrl_start();

	ret = wait_for_completion_timeout(&ss_dev->flows[flow].done, msecs_to_jiffies(SS_WAIT_TIME*50));
	if (ret == 0) {
		SS_ERR("Timed out\n");
		ss_reset();
		return -ETIMEDOUT;
	}

	/* 3. Copy the result from sss->flows[flow].buf_dst to user space. */
	if (ss_dma_prepare(&req_ctx->dma_dst))
		return -EBUSY;
	ss_dma_dst_config(ss_dev, ctx, req_ctx, len, 1);
	ss_dma_start(&req_ctx->dma_dst);
	ret = wait_for_completion_timeout(&req_ctx->done, msecs_to_jiffies(SS_WAIT_TIME));
	if (ret == 0) {
		SS_ERR("Timed out\n");
		return -ETIMEDOUT;
	}

	ss_ctrl_stop();
	ss_irq_disable(flow);
	ss_dma_release(ss_dev, &req_ctx->dma_src);
	ss_dma_release(ss_dev, &req_ctx->dma_dst);

	return 0;
}