linux-headers/asm-powerpc/epapr_hcalls.h

   1 /*
   2  * ePAPR hcall interface
   3  *
   4  * Copyright 2008-2011 Freescale Semiconductor, Inc.
   5  *
   6  * Author: Timur Tabi <timur@freescale.com>
   7  *
   8  * This file is provided under a dual BSD/GPL license.  When using or
   9  * redistributing this file, you may do so under either license.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions are met:
  13  *     * Redistributions of source code must retain the above copyright
  14  *       notice, this list of conditions and the following disclaimer.
  15  *     * Redistributions in binary form must reproduce the above copyright
  16  *       notice, this list of conditions and the following disclaimer in the
  17  *       documentation and/or other materials provided with the distribution.
  18  *     * Neither the name of Freescale Semiconductor nor the
  19  *       names of its contributors may be used to endorse or promote products
  20  *       derived from this software without specific prior written permission.
  21  *
  22  *
  23  * ALTERNATIVELY, this software may be distributed under the terms of the
  24  * GNU General Public License ("GPL") as published by the Free Software
  25  * Foundation, either version 2 of that License or (at your option) any
  26  * later version.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
  29  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  30  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  31  * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
  32  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  33  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  34  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  35  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  36  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  37  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  38  */
  39
  40 #ifndef _ASM_POWERPC_EPAPR_HCALLS_H
  41 #define _ASM_POWERPC_EPAPR_HCALLS_H
  42
  43 #define EV_BYTE_CHANNEL_SEND            1
  44 #define EV_BYTE_CHANNEL_RECEIVE         2
  45 #define EV_BYTE_CHANNEL_POLL            3
  46 #define EV_INT_SET_CONFIG               4
  47 #define EV_INT_GET_CONFIG               5
  48 #define EV_INT_SET_MASK                 6
  49 #define EV_INT_GET_MASK                 7
  50 #define EV_INT_IACK                     9
  51 #define EV_INT_EOI                      10
  52 #define EV_INT_SEND_IPI                 11
  53 #define EV_INT_SET_TASK_PRIORITY        12
  54 #define EV_INT_GET_TASK_PRIORITY        13
  55 #define EV_DOORBELL_SEND                14
  56 #define EV_MSGSND                       15
  57 #define EV_IDLE                         16
  58
  59 /* vendor ID: epapr */
  60 #define EV_LOCAL_VENDOR_ID              0       /* for private use */
  61 #define EV_EPAPR_VENDOR_ID              1
  62 #define EV_FSL_VENDOR_ID                2       /* Freescale Semiconductor */
  63 #define EV_IBM_VENDOR_ID                3       /* IBM */
  64 #define EV_GHS_VENDOR_ID                4       /* Green Hills Software */
  65 #define EV_ENEA_VENDOR_ID               5       /* Enea */
  66 #define EV_WR_VENDOR_ID                 6       /* Wind River Systems */
  67 #define EV_AMCC_VENDOR_ID               7       /* Applied Micro Circuits */
  68 #define EV_KVM_VENDOR_ID                42      /* KVM */
  69
  70 /* The max number of bytes that a byte channel can send or receive per call */
  71 #define EV_BYTE_CHANNEL_MAX_BYTES       16
  72
  73
  74 #define _EV_HCALL_TOKEN(id, num) (((id) << 16) | (num))
  75 #define EV_HCALL_TOKEN(hcall_num) _EV_HCALL_TOKEN(EV_EPAPR_VENDOR_ID, hcall_num)
  76
  77 /* epapr return codes */
  78 #define EV_SUCCESS              0
  79 #define EV_EPERM                1       /* Operation not permitted */
  80 #define EV_ENOENT               2       /*  Entry Not Found */
  81 #define EV_EIO                  3       /* I/O error occurred */
  82 #define EV_EAGAIN               4       /* The operation had insufficient
  83                                          * resources to complete and should be
  84                                          * retried
  85                                          */
  86 #define EV_ENOMEM               5       /* There was insufficient memory to
  87                                          * complete the operation */
  88 #define EV_EFAULT               6       /* Bad guest address */
  89 #define EV_ENODEV               7       /* No such device */
  90 #define EV_EINVAL               8       /* An argument supplied to the hcall
  91                                            was out of range or invalid */
  92 #define EV_INTERNAL             9       /* An internal error occurred */
  93 #define EV_CONFIG               10      /* A configuration error was detected */
  94 #define EV_INVALID_STATE        11      /* The object is in an invalid state */
  95 #define EV_UNIMPLEMENTED        12      /* Unimplemented hypercall */
  96 #define EV_BUFFER_OVERFLOW      13      /* Caller-supplied buffer too small */
  97
  98 #endif /* _ASM_POWERPC_EPAPR_HCALLS_H */