/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright 2024 Rivos, Inc */ #ifndef _ASM_RISCV_SYS_HWPROBE_H #define _ASM_RISCV_SYS_HWPROBE_H #include <asm/cpufeature.h> #define VENDOR_EXT_KEY(ext) \ do { \ if (__riscv_isa_extension_available(isainfo->isa, RISCV_ISA_VENDOR_EXT_##ext)) \ pair->value |= RISCV_HWPROBE_VENDOR_EXT_##ext; \ else \ missing |= RISCV_HWPROBE_VENDOR_EXT_##ext; \ } while (false) /* * Loop through and record extensions that 1) anyone has, and 2) anyone * doesn't have. * * _extension_checks is an arbitrary C block to set the values of pair->value * and missing. It should be filled with VENDOR_EXT_KEY expressions. */ #define VENDOR_EXTENSION_SUPPORTED(pair, cpus, per_hart_vendor_bitmap, _extension_checks) \ do { \ int cpu; \ u64 missing = 0; \ for_each_cpu(cpu, (cpus)) { \ struct riscv_isavendorinfo *isainfo = &(per_hart_vendor_bitmap)[cpu]; \ _extension_checks \ } \ (pair)->value &= ~missing; \ } while (false) \ #endif /* _ASM_RISCV_SYS_HWPROBE_H */