Add CPU discovery capabilities.

Resolves: COMPMID-4500

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: I008c51934ef813fb1f489b531288c4419e701955
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5799
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 78 insertions, 0 deletions

diff --git a/src/common/cpuinfo/CpuIsaInfo.h b/src/common/cpuinfo/CpuIsaInfo.h
new file mode 100644
index 0000000000..1125f766dd
--- /dev/null
+++ b/src/common/cpuinfo/CpuIsaInfo.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2021 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef SRC_COMMON_CPUINFO_CPUISAINFO_H
+#define SRC_COMMON_CPUINFO_CPUISAINFO_H
+
+#include <cstdint>
+
+namespace arm_compute
+{
+namespace cpuinfo
+{
+/** CPU ISA (Instruction Set Architecture) information
+ *
+ * Contains ISA related information around the Arm architecture
+ */
+struct CpuIsaInfo
+{
+    /* SIMD extension support */
+    bool neon{ false };
+    bool sve{ false };
+    bool sve2{ false };
+
+    /* Data-type extensions support */
+    bool fp16{ false };
+    bool bf16{ false };
+
+    /* Instruction support */
+    bool dot{ false };
+    bool immla{ false };
+    bool fmmla{ false };
+};
+
+/** Identify ISA related information through system information
+ *
+ * @param[in] hwcaps  HWCAPS feature information
+ * @param[in] hwcaps2 HWCAPS2 feature information
+ * @param[in] midr    MIDR value
+ *
+ * @return CpuIsaInfo A populated ISA feature structure
+ */
+CpuIsaInfo init_cpu_isa_from_hwcaps(uint32_t hwcaps, uint32_t hwcaps2, uint32_t midr);
+
+/** Identify ISA related information through register information
+ *
+ * @param[in] isar0  Value of Instruction Set Attribute Register 0 (ID_AA64ISAR0_EL1)
+ * @param[in] isar1  Value of Instruction Set Attribute Register 1 (ID_AA64ISAR1_EL1)
+ * @param[in] pfr0   Value of  Processor Feature Register 0 (ID_AA64PFR0_EL1)
+ * @param[in] svefr0 Value of SVE feature ID register 0 (ID_AA64ZFR0_EL1)
+ * @param[in] midr   Value of Main ID Register (MIDR)
+ *
+ * @return CpuIsaInfo A populated ISA feature structure
+ */
+CpuIsaInfo init_cpu_isa_from_regs(uint64_t isar0, uint64_t isar1, uint64_t pfr0, uint64_t svefr0, uint64_t midr);
+} // namespace cpuinfo
+} // namespace arm_compute
+
+#endif /* SRC_COMMON_CPUINFO_CPUISAINFO_H */