cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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opal-prd.h (1782B)

      1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
      2/*
      3 * OPAL Runtime Diagnostics interface driver
      4 * Supported on POWERNV platform
      5 *
      6 * (C) Copyright IBM 2015
      7 *
      8 * Author: Vaidyanathan Srinivasan <svaidy at linux.vnet.ibm.com>
      9 * Author: Jeremy Kerr <jk@ozlabs.org>
     10 *
     11 * This program is free software; you can redistribute it and/or modify
     12 * it under the terms of the GNU General Public License as published by
     13 * the Free Software Foundation; either version 2, or (at your option)
     14 * any later version.
     15 *
     16 * This program is distributed in the hope that it will be useful,
     17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
     18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     19 * GNU General Public License for more details.
     20 */
     21
     22#ifndef _UAPI_ASM_POWERPC_OPAL_PRD_H_
     23#define _UAPI_ASM_POWERPC_OPAL_PRD_H_
     24
     25#include <linux/types.h>
     26
     27/**
     28 * The version of the kernel interface of the PRD system. This describes the
     29 * interface available for the /dev/opal-prd device. The actual PRD message
     30 * layout and content is private to the firmware <--> userspace interface, so
     31 * is not covered by this versioning.
     32 *
     33 * Future interface versions are backwards-compatible; if a later kernel
     34 * version is encountered, functionality provided in earlier versions
     35 * will work.
     36 */
     37#define OPAL_PRD_KERNEL_VERSION		1
     38
     39#define OPAL_PRD_GET_INFO		_IOR('o', 0x01, struct opal_prd_info)
     40#define OPAL_PRD_SCOM_READ		_IOR('o', 0x02, struct opal_prd_scom)
     41#define OPAL_PRD_SCOM_WRITE		_IOW('o', 0x03, struct opal_prd_scom)
     42
     43#ifndef __ASSEMBLY__
     44
     45struct opal_prd_info {
     46	__u64	version;
     47	__u64	reserved[3];
     48};
     49
     50struct opal_prd_scom {
     51	__u64	chip;
     52	__u64	addr;
     53	__u64	data;
     54	__s64	rc;
     55};
     56
     57#endif /* __ASSEMBLY__ */
     58
     59#endif /* _UAPI_ASM_POWERPC_OPAL_PRD_H */