blob: 130235d17bb4e0b60ea6c78986de0a5bb2320619 [file] [log] [blame]
Stanimir Varbanovec8f5d82014-06-25 19:28:57 +03001/*
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
Linus Torvaldsf89f4a02014-10-08 05:23:02 -040017#include <linux/dmaengine.h>
18
Stanimir Varbanovec8f5d82014-06-25 19:28:57 +030019/* 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
26struct 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
38struct 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
45int qce_dma_request(struct device *dev, struct qce_dma_data *dma);
46void qce_dma_release(struct qce_dma_data *dma);
47int 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);
50void qce_dma_issue_pending(struct qce_dma_data *dma);
51int qce_dma_terminate_all(struct qce_dma_data *dma);
Stanimir Varbanovec8f5d82014-06-25 19:28:57 +030052struct scatterlist *
53qce_sgtable_add(struct sg_table *sgt, struct scatterlist *sg_add);
54
55#endif /* _DMA_H_ */