65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2018, The Linux Foundation. All rights reserved.
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* Copyright (C) 2018-2022 Linaro Ltd.
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*/
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#ifndef _IPA_QMI_H_
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#define _IPA_QMI_H_
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#include <linux/types.h>
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#include <linux/soc/qcom/qmi.h>
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struct ipa;
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/**
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* struct ipa_qmi - QMI state associated with an IPA
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* @client_handle: Used to send an QMI requests to the modem
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* @server_handle: Used to handle QMI requests from the modem
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* @modem_sq: QMAP socket address for the modem QMI server
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* @init_driver_work: Work structure used for INIT_DRIVER message handling
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* @initial_boot: True if first boot has not yet completed
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* @uc_ready: True once DRIVER_INIT_COMPLETE request received
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* @modem_ready: True when INIT_DRIVER response received
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* @indication_requested: True when INDICATION_REGISTER request received
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* @indication_sent: True when INIT_COMPLETE indication sent
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*/
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struct ipa_qmi {
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struct qmi_handle client_handle;
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struct qmi_handle server_handle;
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/* Information used for the client handle */
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struct sockaddr_qrtr modem_sq;
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struct work_struct init_driver_work;
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/* Flags used in negotiating readiness */
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bool initial_boot;
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bool uc_ready;
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bool modem_ready;
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bool indication_requested;
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bool indication_sent;
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};
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/**
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* ipa_qmi_setup() - Set up for QMI message exchange
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* @ipa: IPA pointer
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*
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* This is called at the end of ipa_setup(), to prepare for the exchange
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* of QMI messages that perform a "handshake" between the AP and modem.
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* When the modem QMI server announces its presence, an AP request message
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* supplies operating parameters to be used to the modem, and the modem
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* acknowledges receipt of those parameters. The modem will not touch the
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* IPA hardware until this handshake is complete.
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*
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* If the modem crashes (or shuts down) a new handshake begins when the
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* modem's QMI server is started again.
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*/
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int ipa_qmi_setup(struct ipa *ipa);
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/**
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* ipa_qmi_teardown() - Tear down IPA QMI handles
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* @ipa: IPA pointer
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*/
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void ipa_qmi_teardown(struct ipa *ipa);
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#endif /* !_IPA_QMI_H_ */
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