| /* |
| * Copyright (C) 2023 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #if __riscv |
| |
| /** |
| * @file sys/hwprobe.h |
| * @brief RISC-V hardware probing. |
| */ |
| |
| #include <sys/cdefs.h> |
| #include <sys/types.h> |
| |
| /* Pull in struct riscv_hwprobe and corresponding constants. */ |
| #include <asm/hwprobe.h> |
| |
| __BEGIN_DECLS |
| |
| /** |
| * [__riscv_hwprobe(2)](https://docs.kernel.org/riscv/hwprobe.html) |
| * queries hardware characteristics. |
| * |
| * A `__cpu_count` of 0 and null `__cpus` means "all online cpus". |
| * |
| * Returns 0 on success and returns an error number on failure. |
| */ |
| int __riscv_hwprobe(struct riscv_hwprobe* _Nonnull __pairs, size_t __pair_count, size_t __cpu_count, unsigned long* _Nullable __cpus, unsigned __flags); |
| |
| /** |
| * The type of the second argument passed to riscv64 ifunc resolvers. |
| * This argument allows riscv64 ifunc resolvers to call __riscv_hwprobe() |
| * without worrying about whether that relocation is resolved before |
| * the ifunc resolver is called. |
| */ |
| typedef int (*__riscv_hwprobe_t)(struct riscv_hwprobe* _Nonnull __pairs, size_t __pair_count, size_t __cpu_count, unsigned long* _Nullable __cpus, unsigned __flags); |
| |
| __END_DECLS |
| |
| #endif |