1 /* SPDX-License-Identifier: BSD-3-Clause */
3 * Remote processor messaging
5 * Copyright (C) 2011-2020 Texas Instruments, Inc.
6 * Copyright (C) 2011 Google, Inc.
14 * enum - Predefined Mailbox Messages
16 * @RP_MBOX_READY: informs the M3's that we're up and running. this is
17 * part of the init sequence sent that the M3 expects to see immediately
20 * @RP_MBOX_PENDING_MSG: informs the receiver that there is an inbound
21 * message waiting in its own receive-side vring. please note that currently
22 * this message is optional: alternatively, one can explicitly send the index
23 * of the triggered virtqueue itself. the preferred approach will be decided
24 * as we progress and experiment with those two different approaches.
26 * @RP_MBOX_CRASH: this message is sent if BIOS crashes
28 * @RP_MBOX_ECHO_REQUEST: a mailbox-level "ping" message.
30 * @RP_MBOX_ECHO_REPLY: a mailbox-level reply to a "ping"
32 * @RP_MBOX_ABORT_REQUEST: a "please crash" request, used for testing the
33 * recovery mechanism (to some extent).
35 * @RP_MBOX_SUSPEND_AUTO: auto suspend request for the remote processor
37 * @RP_MBOX_SUSPEND_SYSTEM: system suspend request for the remote processor
39 * @RP_MBOX_SUSPEND_ACK: successful response from remote processor for a
42 * @RP_MBOX_SUSPEND_CANCEL: a cancel suspend response from a remote processor
43 * on a suspend request
45 * Introduce new message definitions if any here.
47 * @RP_MBOX_END_MSG: Indicates end of known/defined messages from remote core
48 * This should be the last definition.
51 enum omap_rp_mbox_messages {
52 RP_MBOX_READY = 0xFFFFFF00,
53 RP_MBOX_PENDING_MSG = 0xFFFFFF01,
54 RP_MBOX_CRASH = 0xFFFFFF02,
55 RP_MBOX_ECHO_REQUEST = 0xFFFFFF03,
56 RP_MBOX_ECHO_REPLY = 0xFFFFFF04,
57 RP_MBOX_ABORT_REQUEST = 0xFFFFFF05,
58 RP_MBOX_SUSPEND_AUTO = 0xFFFFFF10,
59 RP_MBOX_SUSPEND_SYSTEM = 0xFFFFFF11,
60 RP_MBOX_SUSPEND_ACK = 0xFFFFFF12,
61 RP_MBOX_SUSPEND_CANCEL = 0xFFFFFF13,
62 RP_MBOX_END_MSG = 0xFFFFFF14,
65 #endif /* _OMAP_RPMSG_H */