1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #pragma once 30 31 /* 32 * @file sys/cachectl.h 33 * @brief Architecture-specific cache control. 34 */ 35 36 #include <sys/cdefs.h> 37 38 __BEGIN_DECLS 39 40 #if defined(__riscv) 41 42 /** 43 * Flag for __riscv_flush_icache() to indicate that only the current 44 * thread's instruction cache needs to be flushed (rather than the 45 * default of all threads). 46 */ 47 #define SYS_RISCV_FLUSH_ICACHE_LOCAL 1UL 48 49 /** 50 * __riscv_flush_icache(2) flushes the instruction cache for the given range of addresses. 51 * The address range is currently (Linux 6.4) ignored, so both pointers may be null. 52 * 53 * Returns 0 on success, and returns -1 and sets `errno` on failure. 54 */ 55 int __riscv_flush_icache(void* _Nullable __start, void* _Nullable __end, unsigned long __flags); 56 57 #endif 58 59 __END_DECLS 60