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 */
100