rtas.h (2444B) - Raw
1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2011 Nathan Whitehorn 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 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. 15 * 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 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _MACHINE_RTAS_H_ 30 #define _MACHINE_RTAS_H_ 31 32 #include <sys/cdefs.h> 33 #include <sys/types.h> 34 #include <dev/ofw/openfirm.h> 35 36 /* 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. 43 */ 44 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); 48 49 /* RTAS Status Codes: see CHRP or PAPR specification */ 50 #define RTAS_OK 0 51 #define RTAS_HW_ERROR -1 52 #define RTAS_BUSY -2 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 59 60 #endif /* _MACHINE_RTAS_H_ */