Daniel Baumann
363454abff
- haveged can be run as an application if also running as a daemon (Closes: #998382). Signed-off-by: Daniel Baumann <daniel@debian.org>
121 lines
4.5 KiB
C
121 lines
4.5 KiB
C
/**
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** Simple entropy harvester based upon the havege RNG
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**
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** Copyright 2018-2022 Jirka Hladky hladky DOT jiri AT gmail DOT com
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** Copyright 2009-2014 Gary Wuertz gary@issiweb.com
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef HAVEGETUNE_H
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#define HAVEGETUNE_H
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#include "havegecollect.h"
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/**
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* Some systems supply a maximum
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*/
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#ifndef FILENAME_MAX
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#define FILENAME_MAX 256 /* Max path length */
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#endif
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/**
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* Limits
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*/
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#define MAX_BIT_IDX (256/BITS_PER_H_UINT) /* Size of resource bitmaps */
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#define MAX_CACHES 8 /* Max cache types */
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#define MAX_CPUS 8 /* Max cpu types */
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/**
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* Object used to represent a set of objects
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*/
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typedef struct {
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H_UINT bits[MAX_BIT_IDX];
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int msw;
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H_UINT source;
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} TOPO_MAP;
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/**
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* Cache instance
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*/
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typedef struct {
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TOPO_MAP cpuMap; /* what cpus have this cache */
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H_UINT type; /* 'I'nstruction, 'D'ata, 'U'nified, 'T'race */
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H_UINT level; /* 0-15................ */
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H_UINT size; /* size in KB */
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} CACHE_INST;
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/**
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* Sources for CACHE_INST TOPO_MAP
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*/
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#define SRC_DEFAULT 0x00001
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#define SRC_PARAM 0x00002
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#define SRC_CPUID_AMD6 0x00004
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#define SRC_CPUID_AMD5 0x00008
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#define SRC_CPUID_INTEL2 0x00010
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#define SRC_CPUID_INTEL4 0x00020
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#define SRC_VFS_INDEX 0x00040
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/**
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* CPU instance
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*/
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typedef struct {
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TOPO_MAP cpuMap; /* what cpus have this config */
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H_UINT signature; /* processor signature */
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H_UINT flags;
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H_UINT maxFn;
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H_UINT maxFnx;
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char vendor[16];
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} CPU_INST;
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/**
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* Sources for CPU_INST TOPO_MAP
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*/
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#define SRC_CPUID_PRESENT 0x00100
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#define SRC_CPUID_HT 0x00200
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#define SRC_CPUID_AMD 0x00400
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#define SRC_CPUID_AMD8 0x00800
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#define SRC_CPUID_LEAFB 0x01000
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#define SRC_CPUID_LEAF4 0x02000
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#define SRC_VFS_STATUS 0x04000
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#define SRC_VFS_ONLINE 0x08000
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#define SRC_VFS_CPUINFO 0x10000
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#define SRC_VFS_CPUDIR 0x20000
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/**
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* Size of representation fields
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*/
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#define SZ_BUILDREP 32
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#define SZ_CPUREP 64
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#define SZ_CACHEREP 32
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/**
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* The result of tuning
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*/
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typedef struct {
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char *procfs; /* where proc is mounted */
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char *sysfs; /* where sys is mounted */
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char buildOpts[SZ_BUILDREP]; /* build options */
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char cpuOpts[SZ_CPUREP]; /* cpu options */
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char icacheOpts[SZ_CACHEREP]; /* icache options */
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char dcacheOpts[SZ_CACHEREP]; /* dcache options */
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TOPO_MAP pAllowed; /* allowed processors */
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TOPO_MAP pOnline; /* processors online */
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TOPO_MAP pCpuInfo; /* processors with info */
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TOPO_MAP pCacheInfo; /* processors with cache info */
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TOPO_MAP mAllowed; /* allowed memory */
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H_UINT a_cpu; /* suggested cpu */
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H_UINT i_tune; /* suggested i cache value */
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H_UINT d_tune; /* suggested d cache value */
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int ctCpu; /* number of cpu types */
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int ctCache; /* number of cache items */
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CPU_INST cpus[MAX_CPUS]; /* cpu instances */
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CACHE_INST caches[MAX_CACHES+2]; /* cache instances */
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} HOST_CFG;
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/**
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* Tuning interface
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*/
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void havege_tune(HOST_CFG *env, H_PARAMS *params);
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#endif
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