| #ifndef _SYSTEMCFG_H |
| #define _SYSTEMCFG_H |
| |
| /* |
| * Copyright (C) 2002 Peter Bergner <bergner@vnet.ibm.com>, IBM |
| * |
| * 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 of the License, or (at your option) any later version. |
| */ |
| |
| /* Change Activity: |
| * 2002/09/30 : bergner : Created |
| * End Change Activity |
| */ |
| |
| |
| #ifndef __KERNEL__ |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <sys/mman.h> |
| #include <linux/types.h> |
| #endif |
| |
| /* |
| * If the major version changes we are incompatible. |
| * Minor version changes are a hint. |
| */ |
| #define SYSTEMCFG_MAJOR 1 |
| #define SYSTEMCFG_MINOR 0 |
| |
| struct systemcfg { |
| __u8 eye_catcher[16]; /* Eyecatcher: SYSTEMCFG:PPC64 0x00 */ |
| struct { /* Systemcfg version numbers */ |
| __u32 major; /* Major number 0x10 */ |
| __u32 minor; /* Minor number 0x14 */ |
| } version; |
| |
| __u32 platform; /* Platform flags 0x18 */ |
| __u32 processor; /* Processor type 0x1C */ |
| __u64 processorCount; /* # of physical processors 0x20 */ |
| __u64 physicalMemorySize; /* Size of real memory(B) 0x28 */ |
| __u64 tb_orig_stamp; /* Timebase at boot 0x30 */ |
| __u64 tb_ticks_per_sec; /* Timebase tics / sec 0x38 */ |
| __u64 tb_to_xs; /* Inverse of TB to 2^20 0x40 */ |
| __u64 stamp_xsec; /* 0x48 */ |
| __u64 tb_update_count; /* Timebase atomicity ctr 0x50 */ |
| __u32 tz_minuteswest; /* Minutes west of Greenwich 0x58 */ |
| __u32 tz_dsttime; /* Type of dst correction 0x5C */ |
| __u32 dCacheL1Size; /* L1 d-cache size 0x60 */ |
| __u32 dCacheL1LineSize; /* L1 d-cache line size 0x64 */ |
| __u32 iCacheL1Size; /* L1 i-cache size 0x68 */ |
| __u32 iCacheL1LineSize; /* L1 i-cache line size 0x6C */ |
| __u8 reserved0[3984]; /* Reserve rest of page 0x70 */ |
| }; |
| |
| #ifdef __KERNEL__ |
| extern struct systemcfg *systemcfg; |
| #else |
| |
| /* Processor Version Register (PVR) field extraction */ |
| #define PVR_VER(pvr) (((pvr) >> 16) & 0xFFFF) /* Version field */ |
| #define PVR_REV(pvr) (((pvr) >> 0) & 0xFFFF) /* Revison field */ |
| |
| /* Processor Version Numbers */ |
| #define PV_NORTHSTAR 0x0033 |
| #define PV_PULSAR 0x0034 |
| #define PV_POWER4 0x0035 |
| #define PV_ICESTAR 0x0036 |
| #define PV_SSTAR 0x0037 |
| #define PV_POWER4p 0x0038 |
| #define PV_POWER4ul 0x0039 |
| #define PV_630 0x0040 |
| #define PV_630p 0x0041 |
| |
| /* Platforms supported by PPC64 */ |
| #define PLATFORM_PSERIES 0x0100 |
| #define PLATFORM_PSERIES_LPAR 0x0101 |
| #define PLATFORM_ISERIES_LPAR 0x0201 |
| |
| |
| static inline volatile struct systemcfg *systemcfg_init(void) |
| { |
| int fd = open("/proc/ppc64/systemcfg", O_RDONLY); |
| volatile struct systemcfg *ret; |
| |
| if (fd == -1) |
| return 0; |
| ret = mmap(0, sizeof(struct systemcfg), PROT_READ, MAP_SHARED, fd, 0); |
| close(fd); |
| if (!ret) |
| return 0; |
| if (ret->version.major != SYSTEMCFG_MAJOR || ret->version.minor < SYSTEMCFG_MINOR) { |
| munmap((void *)ret, sizeof(struct systemcfg)); |
| return 0; |
| } |
| return ret; |
| } |
| #endif /* __KERNEL__ */ |
| |
| #endif /* _SYSTEMCFG_H */ |