1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * OPAL Runtime Diagnostics interface driver 4*4882a593Smuzhiyun * Supported on POWERNV platform 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * (C) Copyright IBM 2015 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * Author: Vaidyanathan Srinivasan <svaidy at linux.vnet.ibm.com> 9*4882a593Smuzhiyun * Author: Jeremy Kerr <jk@ozlabs.org> 10*4882a593Smuzhiyun * 11*4882a593Smuzhiyun * This program is free software; you can redistribute it and/or modify 12*4882a593Smuzhiyun * it under the terms of the GNU General Public License as published by 13*4882a593Smuzhiyun * the Free Software Foundation; either version 2, or (at your option) 14*4882a593Smuzhiyun * any later version. 15*4882a593Smuzhiyun * 16*4882a593Smuzhiyun * This program is distributed in the hope that it will be useful, 17*4882a593Smuzhiyun * but WITHOUT ANY WARRANTY; without even the implied warranty of 18*4882a593Smuzhiyun * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19*4882a593Smuzhiyun * GNU General Public License for more details. 20*4882a593Smuzhiyun */ 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun #ifndef _UAPI_ASM_POWERPC_OPAL_PRD_H_ 23*4882a593Smuzhiyun #define _UAPI_ASM_POWERPC_OPAL_PRD_H_ 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun #include <linux/types.h> 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun /** 28*4882a593Smuzhiyun * The version of the kernel interface of the PRD system. This describes the 29*4882a593Smuzhiyun * interface available for the /dev/opal-prd device. The actual PRD message 30*4882a593Smuzhiyun * layout and content is private to the firmware <--> userspace interface, so 31*4882a593Smuzhiyun * is not covered by this versioning. 32*4882a593Smuzhiyun * 33*4882a593Smuzhiyun * Future interface versions are backwards-compatible; if a later kernel 34*4882a593Smuzhiyun * version is encountered, functionality provided in earlier versions 35*4882a593Smuzhiyun * will work. 36*4882a593Smuzhiyun */ 37*4882a593Smuzhiyun #define OPAL_PRD_KERNEL_VERSION 1 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun #define OPAL_PRD_GET_INFO _IOR('o', 0x01, struct opal_prd_info) 40*4882a593Smuzhiyun #define OPAL_PRD_SCOM_READ _IOR('o', 0x02, struct opal_prd_scom) 41*4882a593Smuzhiyun #define OPAL_PRD_SCOM_WRITE _IOW('o', 0x03, struct opal_prd_scom) 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun #ifndef __ASSEMBLY__ 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun struct opal_prd_info { 46*4882a593Smuzhiyun __u64 version; 47*4882a593Smuzhiyun __u64 reserved[3]; 48*4882a593Smuzhiyun }; 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun struct opal_prd_scom { 51*4882a593Smuzhiyun __u64 chip; 52*4882a593Smuzhiyun __u64 addr; 53*4882a593Smuzhiyun __u64 data; 54*4882a593Smuzhiyun __s64 rc; 55*4882a593Smuzhiyun }; 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun #endif /* __ASSEMBLY__ */ 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun #endif /* _UAPI_ASM_POWERPC_OPAL_PRD_H */ 60