/* SPDX-License-Identifier: BSD-3-Clause */ /* * Remote processor messaging * * Copyright (C) 2011-2020 Texas Instruments, Inc. * Copyright (C) 2011 Google, Inc. * All rights reserved. */ #ifndef _OMAP_RPMSG_H #define _OMAP_RPMSG_H /* * enum - Predefined Mailbox Messages * * @RP_MBOX_READY: informs the M3's that we're up and running. this is * part of the init sequence sent that the M3 expects to see immediately * after it is booted. * * @RP_MBOX_PENDING_MSG: informs the receiver that there is an inbound * message waiting in its own receive-side vring. please note that currently * this message is optional: alternatively, one can explicitly send the index * of the triggered virtqueue itself. the preferred approach will be decided * as we progress and experiment with those two different approaches. * * @RP_MBOX_CRASH: this message is sent if BIOS crashes * * @RP_MBOX_ECHO_REQUEST: a mailbox-level "ping" message. * * @RP_MBOX_ECHO_REPLY: a mailbox-level reply to a "ping" * * @RP_MBOX_ABORT_REQUEST: a "please crash" request, used for testing the * recovery mechanism (to some extent). * * @RP_MBOX_SUSPEND_AUTO: auto suspend request for the remote processor * * @RP_MBOX_SUSPEND_SYSTEM: system suspend request for the remote processor * * @RP_MBOX_SUSPEND_ACK: successful response from remote processor for a * suspend request * * @RP_MBOX_SUSPEND_CANCEL: a cancel suspend response from a remote processor * on a suspend request * * Introduce new message definitions if any here. * * @RP_MBOX_END_MSG: Indicates end of known/defined messages from remote core * This should be the last definition. * */ enum omap_rp_mbox_messages { RP_MBOX_READY = 0xFFFFFF00, RP_MBOX_PENDING_MSG = 0xFFFFFF01, RP_MBOX_CRASH = 0xFFFFFF02, RP_MBOX_ECHO_REQUEST = 0xFFFFFF03, RP_MBOX_ECHO_REPLY = 0xFFFFFF04, RP_MBOX_ABORT_REQUEST = 0xFFFFFF05, RP_MBOX_SUSPEND_AUTO = 0xFFFFFF10, RP_MBOX_SUSPEND_SYSTEM = 0xFFFFFF11, RP_MBOX_SUSPEND_ACK = 0xFFFFFF12, RP_MBOX_SUSPEND_CANCEL = 0xFFFFFF13, RP_MBOX_END_MSG = 0xFFFFFF14, }; #endif /* _OMAP_RPMSG_H */