Function dma_afu_buf_alloc

dpdk/drivers/raw/ifpga/afu_pmd_n3000.c:236–282

}

static int dma_afu_buf_alloc(struct dma_afu_ctx *ctx,
	struct rte_pmd_afu_dma_cfg *cfg)
{
	size_t page_sz = sysconf(_SC_PAGE_SIZE);
	int i, ret = 0;

	if (!ctx || !cfg)
		return -EINVAL;

	for (i = 0; i < NUM_DMA_BUF; i++) {
		ctx->dma_buf[i] = (uint64_t *)rte_zmalloc(NULL, cfg->size,
			TEST_MEM_ALIGN);
		if (!ctx->dma_buf[i]) {
			ret = -ENOMEM;
			goto free_dma_buf;
		}
		ctx->dma_iova[i] = rte_malloc_virt2iova(ctx->dma_buf[i]);
		if (ctx->dma_iova[i] == RTE_BAD_IOVA) {
			ret = -ENOMEM;
			goto free_dma_buf;
		}
	}

	ctx->data_buf = rte_malloc(NULL, cfg->length, page_sz);
	if (!ctx->data_buf) {
		ret = -ENOMEM;
		goto free_dma_buf;
	}

	ctx->ref_buf = rte_malloc(NULL, cfg->length, page_sz);
	if (!ctx->ref_buf) {
		ret = -ENOMEM;
		goto free_data_buf;
	}

	return 0;

free_data_buf:
	rte_free(ctx->data_buf);
	ctx->data_buf = NULL;
free_dma_buf:
	for (i = 0; i < NUM_DMA_BUF; i++) {
		rte_free(ctx->dma_buf[i]);
		ctx->dma_buf[i] = NULL;
	}
	return ret;
}

static void dma_afu_buf_init(struct dma_afu_ctx *ctx, size_t size)
{