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