diff options
Diffstat (limited to 'src/arm/linux/aarch64-isa.c')
| -rw-r--r-- | src/arm/linux/aarch64-isa.c | 87 |
1 files changed, 52 insertions, 35 deletions
diff --git a/src/arm/linux/aarch64-isa.c b/src/arm/linux/aarch64-isa.c index 619cda5..2000e1a 100644 --- a/src/arm/linux/aarch64-isa.c +++ b/src/arm/linux/aarch64-isa.c @@ -6,6 +6,7 @@ void cpuinfo_arm64_linux_decode_isa_from_proc_cpuinfo( uint32_t features, + uint32_t features2, uint32_t midr, const struct cpuinfo_arm_chipset chipset[restrict static 1], struct cpuinfo_arm_isa isa[restrict static 1]) @@ -28,43 +29,56 @@ void cpuinfo_arm64_linux_decode_isa_from_proc_cpuinfo( if (features & CPUINFO_ARM_LINUX_FEATURE_ATOMICS) { isa->atomics = true; } - const uint32_t fp16arith_mask = CPUINFO_ARM_LINUX_FEATURE_FPHP | CPUINFO_ARM_LINUX_FEATURE_ASIMDHP; - if ((features & fp16arith_mask) == fp16arith_mask) { - if (chipset->series == cpuinfo_arm_chipset_series_samsung_exynos && chipset->model == 9810) { - /* Exynos 9810 reports that it supports FP16 compute, but in fact only little cores do */ - cpuinfo_log_warning("FP16 arithmetics disabled: only little cores of Exynos 9810 support FP16 compute"); - } else { - isa->fp16arith = true; - } - } else if (features & CPUINFO_ARM_LINUX_FEATURE_FPHP) { - cpuinfo_log_warning("FP16 arithmetics disabled: detected support only for scalar operations"); - } else if (features & CPUINFO_ARM_LINUX_FEATURE_ASIMDHP) { - cpuinfo_log_warning("FP16 arithmetics disabled: detected support only for SIMD operations"); - } + /* - * Many phones ship with an old kernel configuration that doesn't report - * SQRDMLAH/SQRDMLSH/UQRDMLAH/UQRDMLSH instructions. + * Some phones ship with an old kernel configuration that doesn't report NEON FP16 compute extension and SQRDMLAH/SQRDMLSH/UQRDMLAH/UQRDMLSH instructions. * Use a MIDR-based heuristic to whitelist processors known to support it: - * - Processors with Qualcomm-modified Cortex-A55 cores - * - Processors with Qualcomm-modified Cortex-A75 cores - * - Processors with Qualcomm-modified Cortex-A76 cores - * - Kirin 980 processor + * - Processors with Cortex-A55 cores + * - Processors with Cortex-A65 cores + * - Processors with Cortex-A75 cores + * - Processors with Cortex-A76 cores + * - Processors with Cortex-A77 cores + * - Processors with Exynos M4 cores + * - Processors with Exynos M5 cores + * - Neoverse N1 cores */ - switch (midr & (CPUINFO_ARM_MIDR_IMPLEMENTER_MASK | CPUINFO_ARM_MIDR_PART_MASK)) { - case UINT32_C(0x51008020): /* Kryo 385 Gold (Cortex-A75) */ - case UINT32_C(0x51008030): /* Kryo 385 Silver (Cortex-A55) */ - case UINT32_C(0x51008040): /* Kryo 485 Gold (Cortex-A76) */ - isa->rdm = true; - break; - default: - if (features & CPUINFO_ARM_LINUX_FEATURE_ASIMDRDM) { - isa->rdm = true; - } - if (chipset->series == cpuinfo_arm_chipset_series_hisilicon_kirin && chipset->model == 980) { + if (chipset->series == cpuinfo_arm_chipset_series_samsung_exynos && chipset->model == 9810) { + /* Exynos 9810 reports that it supports FP16 compute, but in fact only little cores do */ + cpuinfo_log_warning("FP16 arithmetics and RDM disabled: only little cores in Exynos 9810 support these extensions"); + } else { + const uint32_t fp16arith_mask = CPUINFO_ARM_LINUX_FEATURE_FPHP | CPUINFO_ARM_LINUX_FEATURE_ASIMDHP; + switch (midr & (CPUINFO_ARM_MIDR_IMPLEMENTER_MASK | CPUINFO_ARM_MIDR_PART_MASK)) { + case UINT32_C(0x4100D050): /* Cortex-A55 */ + case UINT32_C(0x4100D060): /* Cortex-A65 */ + case UINT32_C(0x4100D0B0): /* Cortex-A76 */ + case UINT32_C(0x4100D0C0): /* Neoverse N1 */ + case UINT32_C(0x4100D0D0): /* Cortex-A77 */ + case UINT32_C(0x4100D0E0): /* Cortex-A76AE */ + case UINT32_C(0x4800D400): /* Cortex-A76 (HiSilicon) */ + case UINT32_C(0x51008020): /* Kryo 385 Gold (Cortex-A75) */ + case UINT32_C(0x51008030): /* Kryo 385 Silver (Cortex-A55) */ + case UINT32_C(0x51008040): /* Kryo 485 Gold (Cortex-A76) */ + case UINT32_C(0x51008050): /* Kryo 485 Silver (Cortex-A55) */ + case UINT32_C(0x53000030): /* Exynos M4 */ + case UINT32_C(0x53000040): /* Exynos M5 */ + isa->fp16arith = true; isa->rdm = true; - } - break; + break; + default: + if ((features & fp16arith_mask) == fp16arith_mask) { + isa->fp16arith = true; + } else if (features & CPUINFO_ARM_LINUX_FEATURE_FPHP) { + cpuinfo_log_warning("FP16 arithmetics disabled: detected support only for scalar operations"); + } else if (features & CPUINFO_ARM_LINUX_FEATURE_ASIMDHP) { + cpuinfo_log_warning("FP16 arithmetics disabled: detected support only for SIMD operations"); + } + if (features & CPUINFO_ARM_LINUX_FEATURE_ASIMDRDM) { + isa->rdm = true; + } + break; + } } + /* * Many phones ship with an old kernel configuration that doesn't report UDOT/SDOT instructions. * Use a MIDR-based heuristic to whitelist processors known to support it. @@ -98,13 +112,16 @@ void cpuinfo_arm64_linux_decode_isa_from_proc_cpuinfo( if (features & CPUINFO_ARM_LINUX_FEATURE_JSCVT) { isa->jscvt = true; } - if (features & CPUINFO_ARM_LINUX_FEATURE_ASIMDRDM) { - isa->rdm = true; - } if (features & CPUINFO_ARM_LINUX_FEATURE_JSCVT) { isa->jscvt = true; } if (features & CPUINFO_ARM_LINUX_FEATURE_FCMA) { isa->fcma = true; } + if (features & CPUINFO_ARM_LINUX_FEATURE_SVE) { + isa->sve = true; + } + if (features2 & CPUINFO_ARM_LINUX_FEATURE2_SVE2) { + isa->sve2 = true; + } } |