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ec8f5d8f SV |
1 | /* |
2 | * Copyright (c) 2011-2014, The Linux Foundation. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 and | |
6 | * only version 2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | */ | |
13 | ||
14 | #ifndef _DMA_H_ | |
15 | #define _DMA_H_ | |
16 | ||
f89f4a06 LT |
17 | #include <linux/dmaengine.h> |
18 | ||
ec8f5d8f SV |
19 | /* maximum data transfer block size between BAM and CE */ |
20 | #define QCE_BAM_BURST_SIZE 64 | |
21 | ||
22 | #define QCE_AUTHIV_REGS_CNT 16 | |
23 | #define QCE_AUTH_BYTECOUNT_REGS_CNT 4 | |
24 | #define QCE_CNTRIV_REGS_CNT 4 | |
25 | ||
26 | struct qce_result_dump { | |
27 | u32 auth_iv[QCE_AUTHIV_REGS_CNT]; | |
28 | u32 auth_byte_count[QCE_AUTH_BYTECOUNT_REGS_CNT]; | |
29 | u32 encr_cntr_iv[QCE_CNTRIV_REGS_CNT]; | |
30 | u32 status; | |
31 | u32 status2; | |
32 | }; | |
33 | ||
34 | #define QCE_IGNORE_BUF_SZ (2 * QCE_BAM_BURST_SIZE) | |
35 | #define QCE_RESULT_BUF_SZ \ | |
36 | ALIGN(sizeof(struct qce_result_dump), QCE_BAM_BURST_SIZE) | |
37 | ||
38 | struct qce_dma_data { | |
39 | struct dma_chan *txchan; | |
40 | struct dma_chan *rxchan; | |
41 | struct qce_result_dump *result_buf; | |
42 | void *ignore_buf; | |
43 | }; | |
44 | ||
45 | int qce_dma_request(struct device *dev, struct qce_dma_data *dma); | |
46 | void qce_dma_release(struct qce_dma_data *dma); | |
47 | int qce_dma_prep_sgs(struct qce_dma_data *dma, struct scatterlist *sg_in, | |
48 | int in_ents, struct scatterlist *sg_out, int out_ents, | |
49 | dma_async_tx_callback cb, void *cb_param); | |
50 | void qce_dma_issue_pending(struct qce_dma_data *dma); | |
51 | int qce_dma_terminate_all(struct qce_dma_data *dma); | |
ec8f5d8f SV |
52 | struct scatterlist * |
53 | qce_sgtable_add(struct sg_table *sgt, struct scatterlist *sg_add); | |
54 | ||
55 | #endif /* _DMA_H_ */ |