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Add autodetection for POWER7, POWER9 & POWER10 #647

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Merged
merged 1 commit into from
Jul 21, 2022
Merged

Add autodetection for POWER7, POWER9 & POWER10 #647

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27 changes: 23 additions & 4 deletions frame/base/bli_cpuid.c
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Original file line number Diff line number Diff line change
Expand Up @@ -485,7 +485,7 @@ bool bli_cpuid_is_bulldozer
return TRUE;
}

#elif defined(__aarch64__) || defined(__arm__) || defined(_M_ARM)
#elif defined(__aarch64__) || defined(__arm__) || defined(_M_ARM) || defined(_ARCH_PPC)

arch_t bli_cpuid_query_id( void )
{
Expand Down Expand Up @@ -530,9 +530,14 @@ arch_t bli_cpuid_query_id( void )
return BLIS_ARCH_GENERIC;
}
}
else if ( vendor == VENDOR_UNKNOWN )
else if ( vendor == VENDOR_IBM )
{
return BLIS_ARCH_GENERIC;
if ( model == MODEL_POWER7)
return BLIS_ARCH_POWER7;
else if ( model == MODEL_POWER9)
return BLIS_ARCH_POWER9;
else if ( model == MODEL_POWER10)
return BLIS_ARCH_POWER10;
}

return BLIS_ARCH_GENERIC;
Expand Down Expand Up @@ -1203,7 +1208,7 @@ uint32_t bli_cpuid_query
return VENDOR_ARM;
}

#elif defined(__arm__) || defined(_M_ARM)
#elif defined(__arm__) || defined(_M_ARM) || defined(_ARCH_PPC)

/*
I can't easily find documentation to do this as for aarch64, though
Expand Down Expand Up @@ -1240,6 +1245,20 @@ uint32_t bli_cpuid_query
char feat_str[ TEMP_BUFFER_SIZE ];
char* r_val;

#ifdef _ARCH_PPC
r_val = find_string_in( "cpu", proc_str, TEMP_BUFFER_SIZE, pci_str );
if ( r_val == NULL ) return VENDOR_IBM;

if ( strstr( proc_str, "POWER7" ) != NULL )
*model = MODEL_POWER7;
else if ( strstr( proc_str, "POWER9" ) != NULL )
*model = MODEL_POWER9;
else if ( strstr( proc_str, "POWER10" ) != NULL )
*model = MODEL_POWER10;

return VENDOR_IBM;
#endif

//printf( "bli_cpuid_query(): beginning search\n" );

// Search /proc/cpuinfo for the 'Processor' entry.
Expand Down
6 changes: 5 additions & 1 deletion frame/base/bli_cpuid.h
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Original file line number Diff line number Diff line change
Expand Up @@ -161,19 +161,23 @@ enum
FEATURE_AVX512VL = 0x4000
};

#elif defined(__aarch64__) || defined(__arm__) || defined(_M_ARM)
#elif defined(__aarch64__) || defined(__arm__) || defined(_M_ARM) || defined(_ARCH_PPC)

char* find_string_in( char* target, char* buffer, size_t buf_len, char* filepath );

enum
{
VENDOR_ARM = 0,
VENDOR_IBM,
VENDOR_UNKNOWN
};
enum
{
MODEL_ARMV7 = 0,
MODEL_ARMV8,
MODEL_POWER7,
MODEL_POWER9,
MODEL_POWER10,
MODEL_UNKNOWN
};
enum
Expand Down