1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun 3*4882a593Smuzhiyun /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. 4*4882a593Smuzhiyun * Copyright (C) 2019-2020 Linaro Ltd. 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun #ifndef _IPA_GSI_TRANS_H_ 7*4882a593Smuzhiyun #define _IPA_GSI_TRANS_H_ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <linux/types.h> 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun struct gsi; 12*4882a593Smuzhiyun struct gsi_trans; 13*4882a593Smuzhiyun struct ipa_gsi_endpoint_data; 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun /** 16*4882a593Smuzhiyun * ipa_gsi_trans_complete() - GSI transaction completion callback 17*4882a593Smuzhiyun * @trans: Transaction that has completed 18*4882a593Smuzhiyun * 19*4882a593Smuzhiyun * This called from the GSI layer to notify the IPA layer that a 20*4882a593Smuzhiyun * transaction has completed. 21*4882a593Smuzhiyun */ 22*4882a593Smuzhiyun void ipa_gsi_trans_complete(struct gsi_trans *trans); 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun /** 25*4882a593Smuzhiyun * ipa_gsi_trans_release() - GSI transaction release callback 26*4882a593Smuzhiyun * @trans: Transaction whose resources should be freed 27*4882a593Smuzhiyun * 28*4882a593Smuzhiyun * This called from the GSI layer to notify the IPA layer that a 29*4882a593Smuzhiyun * transaction is about to be freed, so any resources associated 30*4882a593Smuzhiyun * with it should be released. 31*4882a593Smuzhiyun */ 32*4882a593Smuzhiyun void ipa_gsi_trans_release(struct gsi_trans *trans); 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun /** 35*4882a593Smuzhiyun * ipa_gsi_channel_tx_queued() - GSI queued to hardware notification 36*4882a593Smuzhiyun * @gsi: GSI pointer 37*4882a593Smuzhiyun * @channel_id: Channel number 38*4882a593Smuzhiyun * @count: Number of transactions queued 39*4882a593Smuzhiyun * @byte_count: Number of bytes to transfer represented by transactions 40*4882a593Smuzhiyun * 41*4882a593Smuzhiyun * This called from the GSI layer to notify the IPA layer that some 42*4882a593Smuzhiyun * number of transactions have been queued to hardware for execution. 43*4882a593Smuzhiyun */ 44*4882a593Smuzhiyun void ipa_gsi_channel_tx_queued(struct gsi *gsi, u32 channel_id, u32 count, 45*4882a593Smuzhiyun u32 byte_count); 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun /** 48*4882a593Smuzhiyun * ipa_gsi_channel_tx_completed() - GSI transaction completion callback 49*4882a593Smuzhiyun * @gsi: GSI pointer 50*4882a593Smuzhiyun * @channel_id: Channel number 51*4882a593Smuzhiyun * @count: Number of transactions completed since last report 52*4882a593Smuzhiyun * @byte_count: Number of bytes transferred represented by transactions 53*4882a593Smuzhiyun * 54*4882a593Smuzhiyun * This called from the GSI layer to notify the IPA layer that the hardware 55*4882a593Smuzhiyun * has reported the completion of some number of transactions. 56*4882a593Smuzhiyun */ 57*4882a593Smuzhiyun void ipa_gsi_channel_tx_completed(struct gsi *gsi, u32 channel_id, u32 count, 58*4882a593Smuzhiyun u32 byte_count); 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun /* ipa_gsi_endpoint_data_empty() - Empty endpoint config data test 61*4882a593Smuzhiyun * @data: endpoint configuration data 62*4882a593Smuzhiyun * 63*4882a593Smuzhiyun * Determines whether an endpoint configuration data entry is empty, 64*4882a593Smuzhiyun * meaning it contains no valid configuration information and should 65*4882a593Smuzhiyun * be ignored. 66*4882a593Smuzhiyun * 67*4882a593Smuzhiyun * Return: true if empty; false otherwise 68*4882a593Smuzhiyun */ 69*4882a593Smuzhiyun bool ipa_gsi_endpoint_data_empty(const struct ipa_gsi_endpoint_data *data); 70*4882a593Smuzhiyun 71*4882a593Smuzhiyun #endif /* _IPA_GSI_TRANS_H_ */ 72