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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ipa_gsi.h (2320B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2
      3/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
      4 * Copyright (C) 2019-2020 Linaro Ltd.
      5 */
      6#ifndef _IPA_GSI_TRANS_H_
      7#define _IPA_GSI_TRANS_H_
      8
      9#include <linux/types.h>
     10
     11struct gsi;
     12struct gsi_trans;
     13struct ipa_gsi_endpoint_data;
     14
     15/**
     16 * ipa_gsi_trans_complete() - GSI transaction completion callback
     17 * @trans:	Transaction that has completed
     18 *
     19 * This called from the GSI layer to notify the IPA layer that a
     20 * transaction has completed.
     21 */
     22void ipa_gsi_trans_complete(struct gsi_trans *trans);
     23
     24/**
     25 * ipa_gsi_trans_release() - GSI transaction release callback
     26 * @trans:	Transaction whose resources should be freed
     27 *
     28 * This called from the GSI layer to notify the IPA layer that a
     29 * transaction is about to be freed, so any resources associated
     30 * with it should be released.
     31 */
     32void ipa_gsi_trans_release(struct gsi_trans *trans);
     33
     34/**
     35 * ipa_gsi_channel_tx_queued() - GSI queued to hardware notification
     36 * @gsi:	GSI pointer
     37 * @channel_id:	Channel number
     38 * @count:	Number of transactions queued
     39 * @byte_count:	Number of bytes to transfer represented by transactions
     40 *
     41 * This called from the GSI layer to notify the IPA layer that some
     42 * number of transactions have been queued to hardware for execution.
     43 */
     44void ipa_gsi_channel_tx_queued(struct gsi *gsi, u32 channel_id, u32 count,
     45			       u32 byte_count);
     46
     47/**
     48 * ipa_gsi_channel_tx_completed() - GSI transaction completion callback
     49 * @gsi:	GSI pointer
     50 * @channel_id:	Channel number
     51 * @count:	Number of transactions completed since last report
     52 * @byte_count:	Number of bytes transferred represented by transactions
     53 *
     54 * This called from the GSI layer to notify the IPA layer that the hardware
     55 * has reported the completion of some number of transactions.
     56 */
     57void ipa_gsi_channel_tx_completed(struct gsi *gsi, u32 channel_id, u32 count,
     58				  u32 byte_count);
     59
     60/* ipa_gsi_endpoint_data_empty() - Empty endpoint config data test
     61 * @data:	endpoint configuration data
     62 *
     63 * Determines whether an endpoint configuration data entry is empty,
     64 * meaning it contains no valid configuration information and should
     65 * be ignored.
     66 *
     67 * Return:	true if empty; false otherwise
     68 */
     69bool ipa_gsi_endpoint_data_empty(const struct ipa_gsi_endpoint_data *data);
     70
     71#endif /* _IPA_GSI_TRANS_H_ */