1 /* SPDX-License-Identifier: ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) */
2 /*
3 * ePAPR hcall interface
4 *
5 * Copyright 2008-2011 Freescale Semiconductor, Inc.
6 *
7 * Author: Timur Tabi <timur@freescale.com>
8 *
9 * This file is provided under a dual BSD/GPL license. When using or
10 * redistributing this file, you may do so under either license.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions are met:
14 * * Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * * Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * * Neither the name of Freescale Semiconductor nor the
20 * names of its contributors may be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 *
24 * ALTERNATIVELY, this software may be distributed under the terms of the
25 * GNU General Public License ("GPL") as published by the Free Software
26 * Foundation, either version 2 of that License or (at your option) any
27 * later version.
28 *
29 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
30 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
31 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
32 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
33 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
35 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
36 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
38 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 */
40
41 #ifndef _UAPI_ASM_POWERPC_EPAPR_HCALLS_H
42 #define _UAPI_ASM_POWERPC_EPAPR_HCALLS_H
43
44 #define EV_BYTE_CHANNEL_SEND 1
45 #define EV_BYTE_CHANNEL_RECEIVE 2
46 #define EV_BYTE_CHANNEL_POLL 3
47 #define EV_INT_SET_CONFIG 4
48 #define EV_INT_GET_CONFIG 5
49 #define EV_INT_SET_MASK 6
50 #define EV_INT_GET_MASK 7
51 #define EV_INT_IACK 9
52 #define EV_INT_EOI 10
53 #define EV_INT_SEND_IPI 11
54 #define EV_INT_SET_TASK_PRIORITY 12
55 #define EV_INT_GET_TASK_PRIORITY 13
56 #define EV_DOORBELL_SEND 14
57 #define EV_MSGSND 15
58 #define EV_IDLE 16
59
60 /* vendor ID: epapr */
61 #define EV_LOCAL_VENDOR_ID 0 /* for private use */
62 #define EV_EPAPR_VENDOR_ID 1
63 #define EV_FSL_VENDOR_ID 2 /* Freescale Semiconductor */
64 #define EV_IBM_VENDOR_ID 3 /* IBM */
65 #define EV_GHS_VENDOR_ID 4 /* Green Hills Software */
66 #define EV_ENEA_VENDOR_ID 5 /* Enea */
67 #define EV_WR_VENDOR_ID 6 /* Wind River Systems */
68 #define EV_AMCC_VENDOR_ID 7 /* Applied Micro Circuits */
69 #define EV_KVM_VENDOR_ID 42 /* KVM */
70
71 /* The max number of bytes that a byte channel can send or receive per call */
72 #define EV_BYTE_CHANNEL_MAX_BYTES 16
73
74
75 #define _EV_HCALL_TOKEN(id, num) (((id) << 16) | (num))
76 #define EV_HCALL_TOKEN(hcall_num) _EV_HCALL_TOKEN(EV_EPAPR_VENDOR_ID, hcall_num)
77
78 /* epapr return codes */
79 #define EV_SUCCESS 0
80 #define EV_EPERM 1 /* Operation not permitted */
81 #define EV_ENOENT 2 /* Entry Not Found */
82 #define EV_EIO 3 /* I/O error occurred */
83 #define EV_EAGAIN 4 /* The operation had insufficient
84 * resources to complete and should be
85 * retried
86 */
87 #define EV_ENOMEM 5 /* There was insufficient memory to
88 * complete the operation */
89 #define EV_EFAULT 6 /* Bad guest address */
90 #define EV_ENODEV 7 /* No such device */
91 #define EV_EINVAL 8 /* An argument supplied to the hcall
92 was out of range or invalid */
93 #define EV_INTERNAL 9 /* An internal error occurred */
94 #define EV_CONFIG 10 /* A configuration error was detected */
95 #define EV_INVALID_STATE 11 /* The object is in an invalid state */
96 #define EV_UNIMPLEMENTED 12 /* Unimplemented hypercall */
97 #define EV_BUFFER_OVERFLOW 13 /* Caller-supplied buffer too small */
98
99 #endif /* _UAPI_ASM_POWERPC_EPAPR_HCALLS_H */