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 _UAPI_ASM_POWERPC_EPAPR_HCALLS_H
41#define _UAPI_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 occured */
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 occured */
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 /* _UAPI_ASM_POWERPC_EPAPR_HCALLS_H */
99