/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (c) 2011-2014, The Linux Foundation. All rights reserved. */ #ifndef _DMA_H_ #define _DMA_H_ #include <linux/dmaengine.h> /* maximum data transfer block size between BAM and CE */ #define QCE_BAM_BURST_SIZE 64 #define QCE_AUTHIV_REGS_CNT 16 #define QCE_AUTH_BYTECOUNT_REGS_CNT 4 #define QCE_CNTRIV_REGS_CNT 4 struct qce_result_dump { u32 auth_iv[QCE_AUTHIV_REGS_CNT]; u32 auth_byte_count[QCE_AUTH_BYTECOUNT_REGS_CNT]; u32 encr_cntr_iv[QCE_CNTRIV_REGS_CNT]; u32 status; u32 status2; }; #define QCE_IGNORE_BUF_SZ (2 * QCE_BAM_BURST_SIZE) #define QCE_RESULT_BUF_SZ \ ALIGN(sizeof(struct qce_result_dump), QCE_BAM_BURST_SIZE) struct qce_dma_data { struct dma_chan *txchan; struct dma_chan *rxchan; struct qce_result_dump *result_buf; void *ignore_buf; }; int qce_dma_request(struct device *dev, struct qce_dma_data *dma); void qce_dma_release(struct qce_dma_data *dma); int qce_dma_prep_sgs(struct qce_dma_data *dma, struct scatterlist *sg_in, int in_ents, struct scatterlist *sg_out, int out_ents, dma_async_tx_callback cb, void *cb_param); void qce_dma_issue_pending(struct qce_dma_data *dma); int qce_dma_terminate_all(struct qce_dma_data *dma); struct scatterlist * qce_sgtable_add(struct sg_table *sgt, struct scatterlist *sg_add); #endif /* _DMA_H_ */