1 /* SPDX-License-Identifier: GPL-2.0 */
3 /* Copyright (c) 2018, The Linux Foundation. All rights reserved.
4 * Copyright (C) 2018-2020 Linaro Ltd.
9 #include <linux/types.h>
10 #include <linux/soc/qcom/qmi.h>
15 * struct ipa_qmi - QMI state associated with an IPA
16 * @client_handle: Used to send an QMI requests to the modem
17 * @server_handle: Used to handle QMI requests from the modem
18 * @modem_sq: QMAP socket address for the modem QMI server
19 * @init_driver_work: Work structure used for INIT_DRIVER message handling
20 * @initial_boot: True if first boot has not yet completed
21 * @uc_ready: True once DRIVER_INIT_COMPLETE request received
22 * @modem_ready: True when INIT_DRIVER response received
23 * @indication_requested: True when INDICATION_REGISTER request received
24 * @indication_sent: True when INIT_COMPLETE indication sent
27 struct qmi_handle client_handle;
28 struct qmi_handle server_handle;
30 /* Information used for the client handle */
31 struct sockaddr_qrtr modem_sq;
32 struct work_struct init_driver_work;
34 /* Flags used in negotiating readiness */
38 bool indication_requested;
43 * ipa_qmi_setup() - Set up for QMI message exchange
46 * This is called at the end of ipa_setup(), to prepare for the exchange
47 * of QMI messages that perform a "handshake" between the AP and modem.
48 * When the modem QMI server announces its presence, an AP request message
49 * supplies operating parameters to be used to the modem, and the modem
50 * acknowledges receipt of those parameters. The modem will not touch the
51 * IPA hardware until this handshake is complete.
53 * If the modem crashes (or shuts down) a new handshake begins when the
54 * modem's QMI server is started again.
56 int ipa_qmi_setup(struct ipa *ipa);
59 * ipa_qmi_teardown() - Tear down IPA QMI handles
62 void ipa_qmi_teardown(struct ipa *ipa);
64 #endif /* !_IPA_QMI_H_ */