| 1 | /* SPDX-License-Identifier: BSD-3-Clause */ |
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| 2 | /* |
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| 3 | * Remote processor messaging |
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| 4 | * |
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| 5 | * Copyright (C) 2011-2020 Texas Instruments, Inc. |
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| 6 | * Copyright (C) 2011 Google, Inc. |
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| 7 | * All rights reserved. |
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| 8 | */ |
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| 9 | |
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| 10 | #ifndef _OMAP_RPMSG_H |
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| 11 | #define _OMAP_RPMSG_H |
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| 12 | |
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| 13 | /* |
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| 14 | * enum - Predefined Mailbox Messages |
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| 15 | * |
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| 16 | * @RP_MBOX_READY: informs the M3's that we're up and running. this is |
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| 17 | * part of the init sequence sent that the M3 expects to see immediately |
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| 18 | * after it is booted. |
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| 19 | * |
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| 20 | * @RP_MBOX_PENDING_MSG: informs the receiver that there is an inbound |
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| 21 | * message waiting in its own receive-side vring. please note that currently |
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| 22 | * this message is optional: alternatively, one can explicitly send the index |
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| 23 | * of the triggered virtqueue itself. the preferred approach will be decided |
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| 24 | * as we progress and experiment with those two different approaches. |
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| 25 | * |
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| 26 | * @RP_MBOX_CRASH: this message is sent if BIOS crashes |
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| 27 | * |
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| 28 | * @RP_MBOX_ECHO_REQUEST: a mailbox-level "ping" message. |
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| 29 | * |
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| 30 | * @RP_MBOX_ECHO_REPLY: a mailbox-level reply to a "ping" |
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| 31 | * |
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| 32 | * @RP_MBOX_ABORT_REQUEST: a "please crash" request, used for testing the |
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| 33 | * recovery mechanism (to some extent). |
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| 34 | * |
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| 35 | * @RP_MBOX_SUSPEND_AUTO: auto suspend request for the remote processor |
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| 36 | * |
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| 37 | * @RP_MBOX_SUSPEND_SYSTEM: system suspend request for the remote processor |
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| 38 | * |
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| 39 | * @RP_MBOX_SUSPEND_ACK: successful response from remote processor for a |
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| 40 | * suspend request |
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| 41 | * |
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| 42 | * @RP_MBOX_SUSPEND_CANCEL: a cancel suspend response from a remote processor |
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| 43 | * on a suspend request |
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| 44 | * |
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| 45 | * Introduce new message definitions if any here. |
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| 46 | * |
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| 47 | * @RP_MBOX_END_MSG: Indicates end of known/defined messages from remote core |
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| 48 | * This should be the last definition. |
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| 49 | * |
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| 50 | */ |
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| 51 | enum omap_rp_mbox_messages { |
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| 52 | RP_MBOX_READY = 0xFFFFFF00, |
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| 53 | RP_MBOX_PENDING_MSG = 0xFFFFFF01, |
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| 54 | RP_MBOX_CRASH = 0xFFFFFF02, |
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| 55 | RP_MBOX_ECHO_REQUEST = 0xFFFFFF03, |
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| 56 | RP_MBOX_ECHO_REPLY = 0xFFFFFF04, |
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| 57 | RP_MBOX_ABORT_REQUEST = 0xFFFFFF05, |
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| 58 | RP_MBOX_SUSPEND_AUTO = 0xFFFFFF10, |
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| 59 | RP_MBOX_SUSPEND_SYSTEM = 0xFFFFFF11, |
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| 60 | RP_MBOX_SUSPEND_ACK = 0xFFFFFF12, |
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| 61 | RP_MBOX_SUSPEND_CANCEL = 0xFFFFFF13, |
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| 62 | RP_MBOX_END_MSG = 0xFFFFFF14, |
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| 63 | }; |
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| 64 | |
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| 65 | #endif /* _OMAP_RPMSG_H */ |
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| 66 | |
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