1 /* 2 * Remote processor messaging 3 * 4 * Copyright (C) 2011 Texas Instruments, Inc. 5 * Copyright (C) 2011 Google, Inc. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * * Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * * Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * * Neither the name Texas Instruments nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #ifndef _OMAP_RPMSG_H 36 #define _OMAP_RPMSG_H 37 38 /* 39 * enum - Predefined Mailbox Messages 40 * 41 * @RP_MBOX_READY: informs the M3's that we're up and running. this is 42 * part of the init sequence sent that the M3 expects to see immediately 43 * after it is booted. 44 * 45 * @RP_MBOX_PENDING_MSG: informs the receiver that there is an inbound 46 * message waiting in its own receive-side vring. please note that currently 47 * this message is optional: alternatively, one can explicitly send the index 48 * of the triggered virtqueue itself. the preferred approach will be decided 49 * as we progress and experiment with those two different approaches. 50 * 51 * @RP_MBOX_CRASH: this message is sent if BIOS crashes 52 * 53 * @RP_MBOX_ECHO_REQUEST: a mailbox-level "ping" message. 54 * 55 * @RP_MBOX_ECHO_REPLY: a mailbox-level reply to a "ping" 56 * 57 * @RP_MBOX_ABORT_REQUEST: a "please crash" request, used for testing the 58 * recovery mechanism (to some extent). 59 */ 60 enum omap_rp_mbox_messages { 61 RP_MBOX_READY = 0xFFFFFF00, 62 RP_MBOX_PENDING_MSG = 0xFFFFFF01, 63 RP_MBOX_CRASH = 0xFFFFFF02, 64 RP_MBOX_ECHO_REQUEST = 0xFFFFFF03, 65 RP_MBOX_ECHO_REPLY = 0xFFFFFF04, 66 RP_MBOX_ABORT_REQUEST = 0xFFFFFF05, 67 }; 68 69 #endif /* _OMAP_RPMSG_H */ 70