62 lines
1.7 KiB
C
Executable file
62 lines
1.7 KiB
C
Executable file
/*
|
|
* Copyright (C) 2015 Regents of the University of California
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation, version 2.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#ifndef _ASM_RISCV_CACHEFLUSH_H
|
|
#define _ASM_RISCV_CACHEFLUSH_H
|
|
|
|
#include <asm-generic/cacheflush.h>
|
|
|
|
#undef flush_icache_range
|
|
#undef flush_icache_user_range
|
|
#undef flush_dcache_page
|
|
|
|
static inline void local_flush_icache_all(void)
|
|
{
|
|
asm volatile ("fence.i" ::: "memory");
|
|
}
|
|
|
|
#define PG_dcache_clean PG_arch_1
|
|
|
|
static inline void flush_dcache_page(struct page *page)
|
|
{
|
|
if (test_bit(PG_dcache_clean, &page->flags))
|
|
clear_bit(PG_dcache_clean, &page->flags);
|
|
}
|
|
|
|
/*
|
|
* RISC-V doesn't have an instruction to flush parts of the instruction cache,
|
|
* so instead we just flush the whole thing.
|
|
*/
|
|
#define flush_icache_range(start, end) flush_icache_all()
|
|
#define flush_icache_user_range(vma, pg, addr, len) flush_icache_all()
|
|
|
|
#ifndef CONFIG_SMP
|
|
|
|
#define flush_icache_all() local_flush_icache_all()
|
|
#define flush_icache_mm(mm, local) flush_icache_all()
|
|
|
|
#else /* CONFIG_SMP */
|
|
|
|
#define flush_icache_all() sbi_remote_fence_i(NULL)
|
|
void flush_icache_mm(struct mm_struct *mm, bool local);
|
|
|
|
#endif /* CONFIG_SMP */
|
|
|
|
/*
|
|
* Bits in sys_riscv_flush_icache()'s flags argument.
|
|
*/
|
|
#define SYS_RISCV_FLUSH_ICACHE_LOCAL 1UL
|
|
#define SYS_RISCV_FLUSH_ICACHE_ALL (SYS_RISCV_FLUSH_ICACHE_LOCAL)
|
|
|
|
#endif /* _ASM_RISCV_CACHEFLUSH_H */
|