linux/drivers/remoteproc/omap_remoteproc.h
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   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 */
  60enum 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
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