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/*-
* Copyright (c) 2011 Nathan Whitehorn
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _MACHINE_RTAS_H_
#define _MACHINE_RTAS_H_
#include <sys/cdefs.h>
#include <sys/types.h>
#include <dev/ofw/openfirm.h>
/*
* RTAS functions are defined by 32-bit integer tokens. These vary from
* system to system, and can be looked up from their standardized names
* using rtas_token_lookup(). If RTAS is not available, rtas_token_lookup()
* and rtas_call_method() return -1; this can be checked in advance using
* rtas_exists(). Otherwise, rtas_call_method() returns one of the RTAS
* status codes from the bottom of this file.
*/
int rtas_exists(void);
int rtas_call_method(cell_t token, int nargs, int nreturns, ...);
cell_t rtas_token_lookup(const char *method);
/* RTAS Status Codes: see CHRP or PAPR specification */
#define RTAS_OK 0
#define RTAS_HW_ERROR -1
#define RTAS_BUSY -2
#define RTAS_PARAM_ERROR -3
#define RTAS_STATE_CHANGE -7
#define RTAS_VENDOR_BEGIN 9000
#define RTAS_EXTENDED_DELAY 9900
#define RTAS_ISOLATION_ERROR -9000
#define RTAS_VENDOR_ERROR_BEGIN -9004
#endif /* _MACHINE_RTAS_H_ */
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