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/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* OPAL Runtime Diagnostics interface driver
* Supported on POWERNV platform
*
* (C) Copyright IBM 2015
*
* Author: Vaidyanathan Srinivasan <svaidy at linux.vnet.ibm.com>
* Author: Jeremy Kerr <jk@ozlabs.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _ASM_POWERPC_OPAL_PRD_H_
#define _ASM_POWERPC_OPAL_PRD_H_
#include <linux/types.h>
/**
* The version of the kernel interface of the PRD system. This describes the
* interface available for the /dev/opal-prd device. The actual PRD message
* layout and content is private to the firmware <--> userspace interface, so
* is not covered by this versioning.
*
* Future interface versions are backwards-compatible; if a later kernel
* version is encountered, functionality provided in earlier versions
* will work.
*/
#define OPAL_PRD_KERNEL_VERSION 1
#define OPAL_PRD_GET_INFO _IOR('o', 0x01, struct opal_prd_info)
#define OPAL_PRD_SCOM_READ _IOR('o', 0x02, struct opal_prd_scom)
#define OPAL_PRD_SCOM_WRITE _IOW('o', 0x03, struct opal_prd_scom)
#ifndef __ASSEMBLY__
struct opal_prd_info {
__u64 version;
__u64 reserved[3];
};
struct opal_prd_scom {
__u64 chip;
__u64 addr;
__u64 data;
__s64 rc;
};
#endif /* __ASSEMBLY__ */
#endif /* _ASM_POWERPC_OPAL_PRD_H */
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