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