1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (c) 2011-2014, The Linux Foundation. All rights reserved. 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun #ifndef _DMA_H_ 7*4882a593Smuzhiyun #define _DMA_H_ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <linux/dmaengine.h> 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun /* maximum data transfer block size between BAM and CE */ 12*4882a593Smuzhiyun #define QCE_BAM_BURST_SIZE 64 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #define QCE_AUTHIV_REGS_CNT 16 15*4882a593Smuzhiyun #define QCE_AUTH_BYTECOUNT_REGS_CNT 4 16*4882a593Smuzhiyun #define QCE_CNTRIV_REGS_CNT 4 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun struct qce_result_dump { 19*4882a593Smuzhiyun u32 auth_iv[QCE_AUTHIV_REGS_CNT]; 20*4882a593Smuzhiyun u32 auth_byte_count[QCE_AUTH_BYTECOUNT_REGS_CNT]; 21*4882a593Smuzhiyun u32 encr_cntr_iv[QCE_CNTRIV_REGS_CNT]; 22*4882a593Smuzhiyun u32 status; 23*4882a593Smuzhiyun u32 status2; 24*4882a593Smuzhiyun }; 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun #define QCE_IGNORE_BUF_SZ (2 * QCE_BAM_BURST_SIZE) 27*4882a593Smuzhiyun #define QCE_RESULT_BUF_SZ \ 28*4882a593Smuzhiyun ALIGN(sizeof(struct qce_result_dump), QCE_BAM_BURST_SIZE) 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun struct qce_dma_data { 31*4882a593Smuzhiyun struct dma_chan *txchan; 32*4882a593Smuzhiyun struct dma_chan *rxchan; 33*4882a593Smuzhiyun struct qce_result_dump *result_buf; 34*4882a593Smuzhiyun void *ignore_buf; 35*4882a593Smuzhiyun }; 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun int qce_dma_request(struct device *dev, struct qce_dma_data *dma); 38*4882a593Smuzhiyun void qce_dma_release(struct qce_dma_data *dma); 39*4882a593Smuzhiyun int qce_dma_prep_sgs(struct qce_dma_data *dma, struct scatterlist *sg_in, 40*4882a593Smuzhiyun int in_ents, struct scatterlist *sg_out, int out_ents, 41*4882a593Smuzhiyun dma_async_tx_callback cb, void *cb_param); 42*4882a593Smuzhiyun void qce_dma_issue_pending(struct qce_dma_data *dma); 43*4882a593Smuzhiyun int qce_dma_terminate_all(struct qce_dma_data *dma); 44*4882a593Smuzhiyun struct scatterlist * 45*4882a593Smuzhiyun qce_sgtable_add(struct sg_table *sgt, struct scatterlist *sg_add, 46*4882a593Smuzhiyun unsigned int max_len); 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun #endif /* _DMA_H_ */ 49