mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 20:40:54 +07:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/* cacheflush.h: FRV cache flushing routines
|
|
*
|
|
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* 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; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef _ASM_CACHEFLUSH_H
|
|
#define _ASM_CACHEFLUSH_H
|
|
|
|
/* Keep includes the same across arches. */
|
|
#include <linux/mm.h>
|
|
|
|
/*
|
|
* virtually-indexed cache management (our cache is physically indexed)
|
|
*/
|
|
#define flush_cache_all() do {} while(0)
|
|
#define flush_cache_mm(mm) do {} while(0)
|
|
#define flush_cache_range(mm, start, end) do {} while(0)
|
|
#define flush_cache_page(vma, vmaddr, pfn) do {} while(0)
|
|
#define flush_cache_vmap(start, end) do {} while(0)
|
|
#define flush_cache_vunmap(start, end) do {} while(0)
|
|
#define flush_dcache_mmap_lock(mapping) do {} while(0)
|
|
#define flush_dcache_mmap_unlock(mapping) do {} while(0)
|
|
|
|
/*
|
|
* physically-indexed cache managment
|
|
* - see arch/frv/lib/cache.S
|
|
*/
|
|
extern void frv_dcache_writeback(unsigned long start, unsigned long size);
|
|
extern void frv_cache_invalidate(unsigned long start, unsigned long size);
|
|
extern void frv_icache_invalidate(unsigned long start, unsigned long size);
|
|
extern void frv_cache_wback_inv(unsigned long start, unsigned long size);
|
|
|
|
static inline void __flush_cache_all(void)
|
|
{
|
|
asm volatile(" dcef @(gr0,gr0),#1 \n"
|
|
" icei @(gr0,gr0),#1 \n"
|
|
" membar \n"
|
|
: : : "memory"
|
|
);
|
|
}
|
|
|
|
/* dcache/icache coherency... */
|
|
#ifdef CONFIG_MMU
|
|
extern void flush_dcache_page(struct page *page);
|
|
#else
|
|
static inline void flush_dcache_page(struct page *page)
|
|
{
|
|
unsigned long addr = page_to_phys(page);
|
|
frv_dcache_writeback(addr, addr + PAGE_SIZE);
|
|
}
|
|
#endif
|
|
|
|
static inline void flush_page_to_ram(struct page *page)
|
|
{
|
|
flush_dcache_page(page);
|
|
}
|
|
|
|
static inline void flush_icache(void)
|
|
{
|
|
__flush_cache_all();
|
|
}
|
|
|
|
static inline void flush_icache_range(unsigned long start, unsigned long end)
|
|
{
|
|
frv_cache_wback_inv(start, end);
|
|
}
|
|
|
|
#ifdef CONFIG_MMU
|
|
extern void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
|
|
unsigned long start, unsigned long len);
|
|
#else
|
|
static inline void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
|
|
unsigned long start, unsigned long len)
|
|
{
|
|
frv_cache_wback_inv(start, start + len);
|
|
}
|
|
#endif
|
|
|
|
static inline void flush_icache_page(struct vm_area_struct *vma, struct page *page)
|
|
{
|
|
flush_icache_user_range(vma, page, page_to_phys(page), PAGE_SIZE);
|
|
}
|
|
|
|
|
|
#endif /* _ASM_CACHEFLUSH_H */
|