197fb5e8dSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-only */ 2ec8f5d8fSStanimir Varbanov /* 3ec8f5d8fSStanimir Varbanov * Copyright (c) 2011-2014, The Linux Foundation. All rights reserved. 4ec8f5d8fSStanimir Varbanov */ 5ec8f5d8fSStanimir Varbanov 6ec8f5d8fSStanimir Varbanov #ifndef _DMA_H_ 7ec8f5d8fSStanimir Varbanov #define _DMA_H_ 8ec8f5d8fSStanimir Varbanov 9f89f4a06SLinus Torvalds #include <linux/dmaengine.h> 10f89f4a06SLinus Torvalds 11ec8f5d8fSStanimir Varbanov /* maximum data transfer block size between BAM and CE */ 12ec8f5d8fSStanimir Varbanov #define QCE_BAM_BURST_SIZE 64 13ec8f5d8fSStanimir Varbanov 14ec8f5d8fSStanimir Varbanov #define QCE_AUTHIV_REGS_CNT 16 15ec8f5d8fSStanimir Varbanov #define QCE_AUTH_BYTECOUNT_REGS_CNT 4 16ec8f5d8fSStanimir Varbanov #define QCE_CNTRIV_REGS_CNT 4 17ec8f5d8fSStanimir Varbanov 18ec8f5d8fSStanimir Varbanov struct qce_result_dump { 19ec8f5d8fSStanimir Varbanov u32 auth_iv[QCE_AUTHIV_REGS_CNT]; 20ec8f5d8fSStanimir Varbanov u32 auth_byte_count[QCE_AUTH_BYTECOUNT_REGS_CNT]; 21ec8f5d8fSStanimir Varbanov u32 encr_cntr_iv[QCE_CNTRIV_REGS_CNT]; 22ec8f5d8fSStanimir Varbanov u32 status; 23ec8f5d8fSStanimir Varbanov u32 status2; 24ec8f5d8fSStanimir Varbanov }; 25ec8f5d8fSStanimir Varbanov 26ec8f5d8fSStanimir Varbanov #define QCE_IGNORE_BUF_SZ (2 * QCE_BAM_BURST_SIZE) 27ec8f5d8fSStanimir Varbanov #define QCE_RESULT_BUF_SZ \ 28ec8f5d8fSStanimir Varbanov ALIGN(sizeof(struct qce_result_dump), QCE_BAM_BURST_SIZE) 29ec8f5d8fSStanimir Varbanov 30ec8f5d8fSStanimir Varbanov struct qce_dma_data { 31ec8f5d8fSStanimir Varbanov struct dma_chan *txchan; 32ec8f5d8fSStanimir Varbanov struct dma_chan *rxchan; 33ec8f5d8fSStanimir Varbanov struct qce_result_dump *result_buf; 34ec8f5d8fSStanimir Varbanov void *ignore_buf; 35ec8f5d8fSStanimir Varbanov }; 36ec8f5d8fSStanimir Varbanov 37ec8f5d8fSStanimir Varbanov int qce_dma_request(struct device *dev, struct qce_dma_data *dma); 38ec8f5d8fSStanimir Varbanov void qce_dma_release(struct qce_dma_data *dma); 39ec8f5d8fSStanimir Varbanov int qce_dma_prep_sgs(struct qce_dma_data *dma, struct scatterlist *sg_in, 40ec8f5d8fSStanimir Varbanov int in_ents, struct scatterlist *sg_out, int out_ents, 41ec8f5d8fSStanimir Varbanov dma_async_tx_callback cb, void *cb_param); 42ec8f5d8fSStanimir Varbanov void qce_dma_issue_pending(struct qce_dma_data *dma); 43ec8f5d8fSStanimir Varbanov int qce_dma_terminate_all(struct qce_dma_data *dma); 44ec8f5d8fSStanimir Varbanov struct scatterlist * 453ee50c89SEneas U de Queiroz qce_sgtable_add(struct sg_table *sgt, struct scatterlist *sg_add, 46*d6364b81SEneas U de Queiroz unsigned int max_len); 47ec8f5d8fSStanimir Varbanov 48ec8f5d8fSStanimir Varbanov #endif /* _DMA_H_ */ 49