epapr_hcalls.h

/*
 * ePAPR hcall interface
 *
 * Copyright 2008-2011 Freescale Semiconductor, Inc.
 *
 * Author: Timur Tabi <timur@freescale.com>
 *
 * This file is provided under a dual BSD/GPL license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Freescale Semiconductor nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 *
 * ALTERNATIVELY, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") as published by the Free Software
 * Foundation, either version 2 of that License or (at your option) any
 * later version.
 *
 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _UAPI_ASM_POWERPC_EPAPR_HCALLS_H
#define _UAPI_ASM_POWERPC_EPAPR_HCALLS_H

#define EV_BYTE_CHANNEL_SEND        1
#define EV_BYTE_CHANNEL_RECEIVE     2
#define EV_BYTE_CHANNEL_POLL        3
#define EV_INT_SET_CONFIG       4
#define EV_INT_GET_CONFIG       5
#define EV_INT_SET_MASK         6
#define EV_INT_GET_MASK         7
#define EV_INT_IACK         9
#define EV_INT_EOI          10
#define EV_INT_SEND_IPI         11
#define EV_INT_SET_TASK_PRIORITY    12
#define EV_INT_GET_TASK_PRIORITY    13
#define EV_DOORBELL_SEND        14
#define EV_MSGSND           15
#define EV_IDLE             16

/* vendor ID: epapr */
#define EV_LOCAL_VENDOR_ID      0   /* for private use */
#define EV_EPAPR_VENDOR_ID      1
#define EV_FSL_VENDOR_ID        2   /* Freescale Semiconductor */
#define EV_IBM_VENDOR_ID        3   /* IBM */
#define EV_GHS_VENDOR_ID        4   /* Green Hills Software */
#define EV_ENEA_VENDOR_ID       5   /* Enea */
#define EV_WR_VENDOR_ID         6   /* Wind River Systems */
#define EV_AMCC_VENDOR_ID       7   /* Applied Micro Circuits */
#define EV_KVM_VENDOR_ID        42  /* KVM */

/* The max number of bytes that a byte channel can send or receive per call */
#define EV_BYTE_CHANNEL_MAX_BYTES   16


#define _EV_HCALL_TOKEN(id, num) (((id) << 16) | (num))
#define EV_HCALL_TOKEN(hcall_num) _EV_HCALL_TOKEN(EV_EPAPR_VENDOR_ID, hcall_num)

/* epapr return codes */
#define EV_SUCCESS      0
#define EV_EPERM        1   /* Operation not permitted */
#define EV_ENOENT       2   /*  Entry Not Found */
#define EV_EIO          3   /* I/O error occurred */
#define EV_EAGAIN       4   /* The operation had insufficient
                     * resources to complete and should be
                     * retried
                     */
#define EV_ENOMEM       5   /* There was insufficient memory to
                     * complete the operation */
#define EV_EFAULT       6   /* Bad guest address */
#define EV_ENODEV       7   /* No such device */
#define EV_EINVAL       8   /* An argument supplied to the hcall
                       was out of range or invalid */
#define EV_INTERNAL     9   /* An internal error occurred */
#define EV_CONFIG       10  /* A configuration error was detected */
#define EV_INVALID_STATE    11  /* The object is in an invalid state */
#define EV_UNIMPLEMENTED    12  /* Unimplemented hypercall */
#define EV_BUFFER_OVERFLOW  13  /* Caller-supplied buffer too small */

#endif /* _UAPI_ASM_POWERPC_EPAPR_HCALLS_H */