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 11 struct gsi_trans; 12 13 /** 14 * ipa_gsi_trans_complete() - GSI transaction completion callback 15 * @trans: Transaction that has completed 16 * 17 * This called from the GSI layer to notify the IPA layer that a 18 * transaction has completed. 19 */ 20 void ipa_gsi_trans_complete(struct gsi_trans *trans); 21 22 /** 23 * ipa_gsi_trans_release() - GSI transaction release callback 24 * @trans: Transaction whose resources should be freed 25 * 26 * This called from the GSI layer to notify the IPA layer that a 27 * transaction is about to be freed, so any resources associated 28 * with it should be released. 29 */ 30 void ipa_gsi_trans_release(struct gsi_trans *trans); 31 32 /** 33 * ipa_gsi_channel_tx_queued() - GSI queued to hardware notification 34 * @gsi: GSI pointer 35 * @channel_id: Channel number 36 * @count: Number of transactions queued 37 * @byte_count: Number of bytes to transfer represented by transactions 38 * 39 * This called from the GSI layer to notify the IPA layer that some 40 * number of transactions have been queued to hardware for execution. 41 */ 42 void ipa_gsi_channel_tx_queued(struct gsi *gsi, u32 channel_id, u32 count, 43 u32 byte_count); 44 /** 45 * ipa_gsi_trans_complete() - GSI transaction completion callback 46 ipa_gsi_channel_tx_completed() 47 * @gsi: GSI pointer 48 * @channel_id: Channel number 49 * @count: Number of transactions completed since last report 50 * @byte_count: Number of bytes transferred represented by transactions 51 * 52 * This called from the GSI layer to notify the IPA layer that the hardware 53 * has reported the completion of some number of transactions. 54 */ 55 void ipa_gsi_channel_tx_completed(struct gsi *gsi, u32 channel_id, u32 count, 56 u32 byte_count); 57 58 bool ipa_gsi_endpoint_data_empty(const struct ipa_gsi_endpoint_data *data); 59 60 #endif /* _IPA_GSI_TRANS_H_ */ 61