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