diff options
Diffstat (limited to 'sys/powerpc/include/rtas.h')
| -rw-r--r-- | sys/powerpc/include/rtas.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/sys/powerpc/include/rtas.h b/sys/powerpc/include/rtas.h new file mode 100644 index 000000000000..7189a4bc00bf --- /dev/null +++ b/sys/powerpc/include/rtas.h @@ -0,0 +1,59 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * 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. + */ + +#ifndef _MACHINE_RTAS_H_ +#define _MACHINE_RTAS_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_ */ |