1*4882a593Smuzhiyun /* SPDX-License-Identifier: BSD-3-Clause */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Remote processor messaging 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2011-2020 Texas Instruments, Inc. 6*4882a593Smuzhiyun * Copyright (C) 2011 Google, Inc. 7*4882a593Smuzhiyun * All rights reserved. 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #ifndef _OMAP_RPMSG_H 11*4882a593Smuzhiyun #define _OMAP_RPMSG_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun /* 14*4882a593Smuzhiyun * enum - Predefined Mailbox Messages 15*4882a593Smuzhiyun * 16*4882a593Smuzhiyun * @RP_MBOX_READY: informs the M3's that we're up and running. this is 17*4882a593Smuzhiyun * part of the init sequence sent that the M3 expects to see immediately 18*4882a593Smuzhiyun * after it is booted. 19*4882a593Smuzhiyun * 20*4882a593Smuzhiyun * @RP_MBOX_PENDING_MSG: informs the receiver that there is an inbound 21*4882a593Smuzhiyun * message waiting in its own receive-side vring. please note that currently 22*4882a593Smuzhiyun * this message is optional: alternatively, one can explicitly send the index 23*4882a593Smuzhiyun * of the triggered virtqueue itself. the preferred approach will be decided 24*4882a593Smuzhiyun * as we progress and experiment with those two different approaches. 25*4882a593Smuzhiyun * 26*4882a593Smuzhiyun * @RP_MBOX_CRASH: this message is sent if BIOS crashes 27*4882a593Smuzhiyun * 28*4882a593Smuzhiyun * @RP_MBOX_ECHO_REQUEST: a mailbox-level "ping" message. 29*4882a593Smuzhiyun * 30*4882a593Smuzhiyun * @RP_MBOX_ECHO_REPLY: a mailbox-level reply to a "ping" 31*4882a593Smuzhiyun * 32*4882a593Smuzhiyun * @RP_MBOX_ABORT_REQUEST: a "please crash" request, used for testing the 33*4882a593Smuzhiyun * recovery mechanism (to some extent). 34*4882a593Smuzhiyun * 35*4882a593Smuzhiyun * @RP_MBOX_SUSPEND_AUTO: auto suspend request for the remote processor 36*4882a593Smuzhiyun * 37*4882a593Smuzhiyun * @RP_MBOX_SUSPEND_SYSTEM: system suspend request for the remote processor 38*4882a593Smuzhiyun * 39*4882a593Smuzhiyun * @RP_MBOX_SUSPEND_ACK: successful response from remote processor for a 40*4882a593Smuzhiyun * suspend request 41*4882a593Smuzhiyun * 42*4882a593Smuzhiyun * @RP_MBOX_SUSPEND_CANCEL: a cancel suspend response from a remote processor 43*4882a593Smuzhiyun * on a suspend request 44*4882a593Smuzhiyun * 45*4882a593Smuzhiyun * Introduce new message definitions if any here. 46*4882a593Smuzhiyun * 47*4882a593Smuzhiyun * @RP_MBOX_END_MSG: Indicates end of known/defined messages from remote core 48*4882a593Smuzhiyun * This should be the last definition. 49*4882a593Smuzhiyun * 50*4882a593Smuzhiyun */ 51*4882a593Smuzhiyun enum omap_rp_mbox_messages { 52*4882a593Smuzhiyun RP_MBOX_READY = 0xFFFFFF00, 53*4882a593Smuzhiyun RP_MBOX_PENDING_MSG = 0xFFFFFF01, 54*4882a593Smuzhiyun RP_MBOX_CRASH = 0xFFFFFF02, 55*4882a593Smuzhiyun RP_MBOX_ECHO_REQUEST = 0xFFFFFF03, 56*4882a593Smuzhiyun RP_MBOX_ECHO_REPLY = 0xFFFFFF04, 57*4882a593Smuzhiyun RP_MBOX_ABORT_REQUEST = 0xFFFFFF05, 58*4882a593Smuzhiyun RP_MBOX_SUSPEND_AUTO = 0xFFFFFF10, 59*4882a593Smuzhiyun RP_MBOX_SUSPEND_SYSTEM = 0xFFFFFF11, 60*4882a593Smuzhiyun RP_MBOX_SUSPEND_ACK = 0xFFFFFF12, 61*4882a593Smuzhiyun RP_MBOX_SUSPEND_CANCEL = 0xFFFFFF13, 62*4882a593Smuzhiyun RP_MBOX_END_MSG = 0xFFFFFF14, 63*4882a593Smuzhiyun }; 64*4882a593Smuzhiyun 65*4882a593Smuzhiyun #endif /* _OMAP_RPMSG_H */ 66