| /* |
| * Copyright (c) 2011-2014, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #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_ */ |