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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