LXR linux/arch/powerpc/include/uapi/asm/opal-prd.h

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