/* 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 */
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