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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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
18struct 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
30struct 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
37int devm_qce_dma_request(struct device *dev, struct qce_dma_data *dma);
38int qce_dma_prep_sgs(struct qce_dma_data *dma, struct scatterlist *sg_in,
39 int in_ents, struct scatterlist *sg_out, int out_ents,
40 dma_async_tx_callback cb, void *cb_param);
41void qce_dma_issue_pending(struct qce_dma_data *dma);
42int qce_dma_terminate_all(struct qce_dma_data *dma);
43struct scatterlist *
44qce_sgtable_add(struct sg_table *sgt, struct scatterlist *sg_add,
45 unsigned int max_len);
46
47#endif /* _DMA_H_ */