2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright (c) 2011 Nathan Whitehorn
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #ifndef _MACHINE_RTAS_H_
32 #define _MACHINE_RTAS_H_
34 #include <sys/cdefs.h>
35 #include <sys/types.h>
36 #include <dev/ofw/openfirm.h>
39 * RTAS functions are defined by 32-bit integer tokens. These vary from
40 * system to system, and can be looked up from their standardized names
41 * using rtas_token_lookup(). If RTAS is not available, rtas_token_lookup()
42 * and rtas_call_method() return -1; this can be checked in advance using
43 * rtas_exists(). Otherwise, rtas_call_method() returns one of the RTAS
44 * status codes from the bottom of this file.
47 int rtas_exists(void);
48 int rtas_call_method(cell_t token, int nargs, int nreturns, ...);
49 cell_t rtas_token_lookup(const char *method);
51 /* RTAS Status Codes: see CHRP or PAPR specification */
53 #define RTAS_HW_ERROR -1
55 #define RTAS_PARAM_ERROR -3
56 #define RTAS_STATE_CHANGE -7
57 #define RTAS_VENDOR_BEGIN 9000
58 #define RTAS_EXTENDED_DELAY 9900
59 #define RTAS_ISOLATION_ERROR -9000
60 #define RTAS_VENDOR_ERROR_BEGIN -9004
62 #endif /* _MACHINE_RTAS_H_ */