C++ (Cpp) SS_METHOD_IS_HASH Examples

Example #1

File: sunxi_ss_proc.c Project: alex-deng/a33_linux

static int ss_dma_src_config(sunxi_ss_t *sss, void *ctx, ss_aes_req_ctx_t *req_ctx, int len, int cb)
{
	int flow = ((ss_comm_ctx_t *)ctx)->flow;
	ss_dma_info_t *info = &req_ctx->dma_src;
	struct dma_slave_config dma_conf = {0};
	struct dma_async_tx_descriptor *dma_desc = NULL;

	info->dir = DMA_MEM_TO_MEM;
	dma_conf.direction = info->dir;
#ifdef SS_CTR_MODE_ENABLE
	if (req_ctx->mode == SS_AES_MODE_CTR)
		dma_conf.src_addr_width = dma_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
	else
#endif
	dma_conf.src_addr_width = dma_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;

	dma_conf.src_maxburst = 1;
	dma_conf.dst_maxburst = 1;
	dma_conf.slave_id = sunxi_slave_id(DRQDST_SDRAM, DRQSRC_SDRAM);
	dmaengine_slave_config(info->chan, &dma_conf);

	ss_sg_table_init(&info->sgt_for_cp, info->sg, len, sss->flows[flow].buf_src, sss->flows[flow].buf_src_dma);
	SS_DBG("chan: 0x%p, info->sgt_for_cp.sgl: 0x%p \n", info->chan, info->sgt_for_cp.sgl);

	info->nents = info->sgt_for_cp.nents;
	SS_DBG("flow: %d, sg num: %d, total len: %d \n", flow, info->nents, len);

	dma_map_sg(&sss->pdev->dev, info->sg, info->nents, info->dir);
	dma_map_sg(&sss->pdev->dev, info->sgt_for_cp.sgl, info->nents, info->dir);

	if (SS_METHOD_IS_HASH(req_ctx->type)) {
		/* Total len is to small, so there is no data for DMA. */
		if (len < SHA1_BLOCK_SIZE)
			return 1;

		ss_hash_padding_sg_prepare(&info->sg[info->nents-1], len);
		ss_hash_padding_sg_prepare(&info->sgt_for_cp.sgl[info->nents-1], len);
	}

	dma_desc = info->chan->device->device_prep_dma_sg(info->chan,
			info->sgt_for_cp.sgl, info->nents,
			info->sg, info->nents, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
	if (!dma_desc) {
		SS_ERR("dmaengine_prep_slave_sg() failed!\n");
		return -1;
	}

	if (cb == 1) {
		dma_desc->callback = ss_dma_cb;
		dma_desc->callback_param = (void *)req_ctx;
	}
	dmaengine_submit(dma_desc);
	return 0;
}

Example #2

File: sunxi_ss_proc.c Project: 925outer/BPI-M2P-bsp

/* ctx - only used for HASH. */
static int ss_dma_src_config(sunxi_ss_t *sss, void *ctx, ss_aes_req_ctx_t *req_ctx, int len, int cb)
{
	int nents = 0;
	int npages = 0;
	ss_dma_info_t *info = &req_ctx->dma_src;
	struct dma_slave_config dma_conf = {0};
	struct dma_async_tx_descriptor *dma_desc = NULL;

	info->dir = DMA_MEM_TO_DEV;
	dma_conf.direction = info->dir;
	dma_conf.dst_addr = sss->base_addr_phy + SS_REG_RXFIFO;
	dma_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
	dma_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
	dma_conf.src_maxburst = 1;
	dma_conf.dst_maxburst = 1;
	dma_conf.slave_id = sunxi_slave_id(DRQDST_SS, DRQSRC_SDRAM);
	dmaengine_slave_config(info->chan, &dma_conf);

	npages = ss_sg_cnt(info->sg, len);
	WARN_ON(npages == 0);

	nents = dma_map_sg(&sss->pdev->dev, info->sg, npages, info->dir);
	SS_DBG("npages = %d, nents = %d, len = %d, sg.len = %d \n", npages, nents, len, sg_dma_len(info->sg));
	if (!nents) {
		SS_ERR("dma_map_sg() error\n");
		return -EINVAL;
	}

	info->nents = nents;

	if (SS_METHOD_IS_HASH(req_ctx->type)) {
		ss_hash_padding_sg_prepare(&info->sg[nents-1], len);

		/* Total len is too small, so there is no data for DMA. */
		if (len < SHA1_BLOCK_SIZE)
			return 1;
	}

	dma_desc = dmaengine_prep_slave_sg(info->chan, info->sg, nents,
				info->dir,	DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
	if (!dma_desc) {
		SS_ERR("dmaengine_prep_slave_sg() failed!\n");
		return -1;
	}

	if (cb == 1) {
		dma_desc->callback = ss_dma_cb;
		dma_desc->callback_param = (void *)req_ctx;
	}
	dmaengine_submit(dma_desc);
	return 0;
}