65 строки
2.0 KiB
C
65 строки
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
|
/* Copyright (c) 2018, The Linux Foundation. All rights reserved.
|
|
* Copyright (C) 2018-2020 Linaro Ltd.
|
|
*/
|
|
#ifndef _IPA_QMI_H_
|
|
#define _IPA_QMI_H_
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/soc/qcom/qmi.h>
|
|
|
|
struct ipa;
|
|
|
|
/**
|
|
* struct ipa_qmi - QMI state associated with an IPA
|
|
* @client_handle: Used to send an QMI requests to the modem
|
|
* @server_handle: Used to handle QMI requests from the modem
|
|
* @modem_sq: QMAP socket address for the modem QMI server
|
|
* @init_driver_work: Work structure used for INIT_DRIVER message handling
|
|
* @initial_boot: True if first boot has not yet completed
|
|
* @uc_ready: True once DRIVER_INIT_COMPLETE request received
|
|
* @modem_ready: True when INIT_DRIVER response received
|
|
* @indication_requested: True when INDICATION_REGISTER request received
|
|
* @indication_sent: True when INIT_COMPLETE indication sent
|
|
*/
|
|
struct ipa_qmi {
|
|
struct qmi_handle client_handle;
|
|
struct qmi_handle server_handle;
|
|
|
|
/* Information used for the client handle */
|
|
struct sockaddr_qrtr modem_sq;
|
|
struct work_struct init_driver_work;
|
|
|
|
/* Flags used in negotiating readiness */
|
|
bool initial_boot;
|
|
bool uc_ready;
|
|
bool modem_ready;
|
|
bool indication_requested;
|
|
bool indication_sent;
|
|
};
|
|
|
|
/**
|
|
* ipa_qmi_setup() - Set up for QMI message exchange
|
|
* @ipa: IPA pointer
|
|
*
|
|
* This is called at the end of ipa_setup(), to prepare for the exchange
|
|
* of QMI messages that perform a "handshake" between the AP and modem.
|
|
* When the modem QMI server announces its presence, an AP request message
|
|
* supplies operating parameters to be used to the modem, and the modem
|
|
* acknowledges receipt of those parameters. The modem will not touch the
|
|
* IPA hardware until this handshake is complete.
|
|
*
|
|
* If the modem crashes (or shuts down) a new handshake begins when the
|
|
* modem's QMI server is started again.
|
|
*/
|
|
int ipa_qmi_setup(struct ipa *ipa);
|
|
|
|
/**
|
|
* ipa_qmi_teardown() - Tear down IPA QMI handles
|
|
* @ipa: IPA pointer
|
|
*/
|
|
void ipa_qmi_teardown(struct ipa *ipa);
|
|
|
|
#endif /* !_IPA_QMI_H_ */
|