cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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dma.h (1376B)

      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 qce_dma_request(struct device *dev, struct qce_dma_data *dma);
     38void qce_dma_release(struct qce_dma_data *dma);
     39int 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);
     42void qce_dma_issue_pending(struct qce_dma_data *dma);
     43int qce_dma_terminate_all(struct qce_dma_data *dma);
     44struct scatterlist *
     45qce_sgtable_add(struct sg_table *sgt, struct scatterlist *sg_add,
     46		unsigned int max_len);
     47
     48#endif /* _DMA_H_ */