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Fix ARMV9SME target in DYNAMIC_ARCH and add SME query code for MacOS #5222

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Fix ARMV9SME target in DYNAMIC_ARCH and add SME query code for MacOS #5222

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26 changes: 23 additions & 3 deletions driver/others/dynamic_arm64.c
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,14 @@
#include <sys/auxv.h>
#endif

#ifdef __APPLE__
#include <sys/sysctl.h>
int32_t value;
size_t length=sizeof(value);
int64_t value64;
size_t length64=sizeof(value64);
#endif

extern gotoblas_t gotoblas_ARMV8;
#ifdef DYNAMIC_LIST
#ifdef DYN_CORTEXA53
Expand Down Expand Up @@ -168,7 +176,7 @@ extern void openblas_warning(int verbose, const char * msg);
#define FALLBACK_VERBOSE 1
#define NEOVERSEN1_FALLBACK "OpenBLAS : Your OS does not support SVE instructions. OpenBLAS is using Neoverse N1 kernels as a fallback, which may give poorer performance.\n"

#define NUM_CORETYPES 18
#define NUM_CORETYPES 19

/*
* In case asm/hwcap.h is outdated on the build system, make sure
Expand Down Expand Up @@ -207,6 +215,7 @@ static char *corename[] = {
"cortexa55",
"armv8sve",
"a64fx",
"armv9sme",
"unknown"
};

Expand All @@ -229,6 +238,7 @@ char *gotoblas_corename(void) {
if (gotoblas == &gotoblas_CORTEXA55) return corename[15];
if (gotoblas == &gotoblas_ARMV8SVE) return corename[16];
if (gotoblas == &gotoblas_A64FX) return corename[17];
if (gotoblas == &gotoblas_ARMV9SME) return corename[18];
return corename[NUM_CORETYPES];
}

Expand Down Expand Up @@ -277,6 +287,11 @@ static gotoblas_t *get_coretype(void) {
char coremsg[128];

#if defined (OS_DARWIN)
//future #if !defined(NO_SME)
// if (support_sme1) {
// return &gotoblas_ARMV9SME;
// }
// #endif
return &gotoblas_NEOVERSEN1;
#endif

Expand Down Expand Up @@ -439,15 +454,16 @@ static gotoblas_t *get_coretype(void) {
}
break;
case 0x61: // Apple
//future if (support_sme1) return &gotoblas_ARMV9SME;
return &gotoblas_NEOVERSEN1;
break;
default:
snprintf(coremsg, 128, "Unknown CPU model - implementer %x part %x\n",implementer,part);
openblas_warning(1, coremsg);
}

#if !defined(NO_SME) && defined(HWCAP2_SME)
if ((getauxval(AT_HWCAP2) & HWCAP2_SME)) {
#if !defined(NO_SME)
if (support_sme1) {
return &gotoblas_ARMV9SME;
}
#endif
Expand Down Expand Up @@ -511,6 +527,10 @@ int support_sme1(void) {
if(getauxval(AT_HWCAP2) & HWCAP2_SME){
ret = 1;
}
#endif
#if defined(__APPLE__)
sysctlbyname("hw.optional.arm.FEAT_SME",&value64,&length64,NULL,0);
ret = value64;
#endif
return ret;
}
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