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a7084c3d | 1 | /* SPDX-License-Identifier: BSD-3-Clause */ |
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2 | /* |
3 | * Remote processor messaging | |
4 | * | |
9077ac1a | 5 | * Copyright (C) 2011-2020 Texas Instruments, Inc. |
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6 | * Copyright (C) 2011 Google, Inc. |
7 | * All rights reserved. | |
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8 | */ |
9 | ||
10 | #ifndef _OMAP_RPMSG_H | |
11 | #define _OMAP_RPMSG_H | |
12 | ||
13 | /* | |
14 | * enum - Predefined Mailbox Messages | |
15 | * | |
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 | |
18 | * after it is booted. | |
19 | * | |
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. | |
25 | * | |
26 | * @RP_MBOX_CRASH: this message is sent if BIOS crashes | |
27 | * | |
28 | * @RP_MBOX_ECHO_REQUEST: a mailbox-level "ping" message. | |
29 | * | |
30 | * @RP_MBOX_ECHO_REPLY: a mailbox-level reply to a "ping" | |
31 | * | |
32 | * @RP_MBOX_ABORT_REQUEST: a "please crash" request, used for testing the | |
33 | * recovery mechanism (to some extent). | |
8135d1d2 | 34 | * |
9077ac1a SA |
35 | * @RP_MBOX_SUSPEND_AUTO: auto suspend request for the remote processor |
36 | * | |
37 | * @RP_MBOX_SUSPEND_SYSTEM: system suspend request for the remote processor | |
38 | * | |
39 | * @RP_MBOX_SUSPEND_ACK: successful response from remote processor for a | |
40 | * suspend request | |
41 | * | |
42 | * @RP_MBOX_SUSPEND_CANCEL: a cancel suspend response from a remote processor | |
43 | * on a suspend request | |
44 | * | |
8135d1d2 SA |
45 | * Introduce new message definitions if any here. |
46 | * | |
47 | * @RP_MBOX_END_MSG: Indicates end of known/defined messages from remote core | |
48 | * This should be the last definition. | |
49 | * | |
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50 | */ |
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, | |
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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, | |
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63 | }; |
64 | ||
65 | #endif /* _OMAP_RPMSG_H */ |