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