162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-only */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Copyright (c) 2011-2014, The Linux Foundation. All rights reserved. 462306a36Sopenharmony_ci */ 562306a36Sopenharmony_ci 662306a36Sopenharmony_ci#ifndef _DMA_H_ 762306a36Sopenharmony_ci#define _DMA_H_ 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci#include <linux/dmaengine.h> 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci/* maximum data transfer block size between BAM and CE */ 1262306a36Sopenharmony_ci#define QCE_BAM_BURST_SIZE 64 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ci#define QCE_AUTHIV_REGS_CNT 16 1562306a36Sopenharmony_ci#define QCE_AUTH_BYTECOUNT_REGS_CNT 4 1662306a36Sopenharmony_ci#define QCE_CNTRIV_REGS_CNT 4 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_cistruct qce_result_dump { 1962306a36Sopenharmony_ci u32 auth_iv[QCE_AUTHIV_REGS_CNT]; 2062306a36Sopenharmony_ci u32 auth_byte_count[QCE_AUTH_BYTECOUNT_REGS_CNT]; 2162306a36Sopenharmony_ci u32 encr_cntr_iv[QCE_CNTRIV_REGS_CNT]; 2262306a36Sopenharmony_ci u32 status; 2362306a36Sopenharmony_ci u32 status2; 2462306a36Sopenharmony_ci}; 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_ci#define QCE_IGNORE_BUF_SZ (2 * QCE_BAM_BURST_SIZE) 2762306a36Sopenharmony_ci#define QCE_RESULT_BUF_SZ \ 2862306a36Sopenharmony_ci ALIGN(sizeof(struct qce_result_dump), QCE_BAM_BURST_SIZE) 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_cistruct qce_dma_data { 3162306a36Sopenharmony_ci struct dma_chan *txchan; 3262306a36Sopenharmony_ci struct dma_chan *rxchan; 3362306a36Sopenharmony_ci struct qce_result_dump *result_buf; 3462306a36Sopenharmony_ci void *ignore_buf; 3562306a36Sopenharmony_ci}; 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ciint qce_dma_request(struct device *dev, struct qce_dma_data *dma); 3862306a36Sopenharmony_civoid qce_dma_release(struct qce_dma_data *dma); 3962306a36Sopenharmony_ciint qce_dma_prep_sgs(struct qce_dma_data *dma, struct scatterlist *sg_in, 4062306a36Sopenharmony_ci int in_ents, struct scatterlist *sg_out, int out_ents, 4162306a36Sopenharmony_ci dma_async_tx_callback cb, void *cb_param); 4262306a36Sopenharmony_civoid qce_dma_issue_pending(struct qce_dma_data *dma); 4362306a36Sopenharmony_ciint qce_dma_terminate_all(struct qce_dma_data *dma); 4462306a36Sopenharmony_cistruct scatterlist * 4562306a36Sopenharmony_ciqce_sgtable_add(struct sg_table *sgt, struct scatterlist *sg_add, 4662306a36Sopenharmony_ci unsigned int max_len); 4762306a36Sopenharmony_ci 4862306a36Sopenharmony_ci#endif /* _DMA_H_ */ 49