/* 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 _UAPI_ASM_POWERPC_OPAL_PRD_H_
#define _UAPI_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' , 0 x01, struct opal_prd_info)
#define OPAL_PRD_SCOM_READ _IOR('o' , 0 x02, struct opal_prd_scom)
#define OPAL_PRD_SCOM_WRITE _IOW('o' , 0 x03, 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 /* _UAPI_ASM_POWERPC_OPAL_PRD_H */
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