FM / asm

/usr/src/linux-headers-5.15.0-181/arch/arc/include/asm/

/usr/src/linux-headers-5.15.0-181/arch/arc/include/asm

Name	Size	Mode	Actions
arcregs.h	9477	0644	edit dl rm
asm-offsets.h	165	0644	edit dl rm
asserts.h	958	0644	edit dl rm
atomic-llsc.h	2864	0644	edit dl rm
atomic-spinlock.h	2569	0644	edit dl rm
atomic.h	1153	0644	edit dl rm
atomic64-arcv2.h	6095	0644	edit dl rm
barrier.h	1376	0644	edit dl rm
bitops.h	3885	0644	edit dl rm
bug.h	819	0644	edit dl rm
cache.h	3604	0644	edit dl rm
cacheflush.h	3824	0644	edit dl rm
checksum.h	2371	0644	edit dl rm
cmpxchg.h	3188	0644	edit dl rm
current.h	549	0644	edit dl rm
delay.h	1896	0644	edit dl rm
disasm.h	3813	0644	edit dl rm
dma.h	313	0644	edit dl rm
dsp-impl.h	3860	0644	edit dl rm
dsp.h	796	0644	edit dl rm
dwarf.h	746	0644	edit dl rm
elf.h	1935	0644	edit dl rm
entry-arcv2.h	7419	0644	edit dl rm
entry-compact.h	8810	0644	edit dl rm
entry.h	6687	0644	edit dl rm
exec.h	264	0644	edit dl rm
fb.h	411	0644	edit dl rm
fpu.h	1125	0644	edit dl rm
futex.h	3611	0644	edit dl rm
highmem.h	1422	0644	edit dl rm
hugepage.h	2071	0644	edit dl rm
io.h	6291	0644	edit dl rm
irq.h	679	0644	edit dl rm
irqflags-arcv2.h	3491	0644	edit dl rm
irqflags-compact.h	4293	0644	edit dl rm
irqflags.h	363	0644	edit dl rm
jump_label.h	1976	0644	edit dl rm
Kbuild	153	0644	edit dl rm
kdebug.h	254	0644	edit dl rm
kgdb.h	1239	0644	edit dl rm
kprobes.h	1186	0644	edit dl rm
linkage.h	1484	0644	edit dl rm
mach_desc.h	1943	0644	edit dl rm
mmu-arcv2.h	2494	0644	edit dl rm
mmu.h	387	0644	edit dl rm
mmu_context.h	5568	0644	edit dl rm
module.h	428	0644	edit dl rm
page.h	3313	0644	edit dl rm
pci.h	360	0644	edit dl rm
perf_event.h	6879	0644	edit dl rm
pgalloc.h	2888	0644	edit dl rm
pgtable-bits-arcv2.h	4896	0644	edit dl rm
pgtable-levels.h	5626	0644	edit dl rm
pgtable.h	780	0644	edit dl rm
processor.h	3253	0644	edit dl rm
ptrace.h	3759	0644	edit dl rm
sections.h	261	0644	edit dl rm
segment.h	476	0644	edit dl rm
serial.h	498	0644	edit dl rm
setup.h	1274	0644	edit dl rm
shmparam.h	296	0644	edit dl rm
smp.h	3823	0644	edit dl rm
spinlock.h	8580	0644	edit dl rm
spinlock_types.h	905	0644	edit dl rm
stacktrace.h	1178	0644	edit dl rm
string.h	1036	0644	edit dl rm
switch_to.h	553	0644	edit dl rm
syscall.h	1738	0644	edit dl rm
syscalls.h	547	0644	edit dl rm
thread_info.h	3339	0644	edit dl rm
timex.h	362	0644	edit dl rm
tlb.h	262	0644	edit dl rm
tlbflush.h	1654	0644	edit dl rm
uaccess.h	17019	0644	edit dl rm
unaligned.h	625	0644	edit dl rm
unwind.h	3446	0644	edit dl rm
vermagic.h	157	0644	edit dl rm
vmalloc.h	87	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/arch/arc/include/asm/cacheflush.h (3824B)

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
 *
 *  vineetg: May 2011: for Non-aliasing VIPT D-cache following can be NOPs
 *   -flush_cache_dup_mm (fork)
 *   -likewise for flush_cache_mm (exit/execve)
 *   -likewise for flush_cache_{range,page} (munmap, exit, COW-break)
 *
 *  vineetg: April 2008
 *   -Added a critical CacheLine flush to copy_to_user_page( ) which
 *     was causing gdbserver to not setup breakpoints consistently
 */

#ifndef _ASM_CACHEFLUSH_H
#define _ASM_CACHEFLUSH_H

#include <linux/mm.h>
#include <asm/shmparam.h>

/*
 * Semantically we need this because icache doesn't snoop dcache/dma.
 * However ARC Cache flush requires paddr as well as vaddr, latter not available
 * in the flush_icache_page() API. So we no-op it but do the equivalent work
 * in update_mmu_cache()
 */
#define flush_icache_page(vma, page)

void flush_cache_all(void);

void flush_icache_range(unsigned long kstart, unsigned long kend);
void __sync_icache_dcache(phys_addr_t paddr, unsigned long vaddr, int len);
void __inv_icache_page(phys_addr_t paddr, unsigned long vaddr);
void __flush_dcache_page(phys_addr_t paddr, unsigned long vaddr);

#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1

void flush_dcache_page(struct page *page);

void dma_cache_wback_inv(phys_addr_t start, unsigned long sz);
void dma_cache_inv(phys_addr_t start, unsigned long sz);
void dma_cache_wback(phys_addr_t start, unsigned long sz);

#define flush_dcache_mmap_lock(mapping)		do { } while (0)
#define flush_dcache_mmap_unlock(mapping)	do { } while (0)

/* TBD: optimize this */
#define flush_cache_vmap(start, end)		flush_cache_all()
#define flush_cache_vunmap(start, end)		flush_cache_all()

#define flush_cache_dup_mm(mm)			/* called on fork (VIVT only) */

#ifndef CONFIG_ARC_CACHE_VIPT_ALIASING

#define flush_cache_mm(mm)			/* called on munmap/exit */
#define flush_cache_range(mm, u_vstart, u_vend)
#define flush_cache_page(vma, u_vaddr, pfn)	/* PF handling/COW-break */

#else	/* VIPT aliasing dcache */

/* To clear out stale userspace mappings */
void flush_cache_mm(struct mm_struct *mm);
void flush_cache_range(struct vm_area_struct *vma,
	unsigned long start,unsigned long end);
void flush_cache_page(struct vm_area_struct *vma,
	unsigned long user_addr, unsigned long page);

/*
 * To make sure that userspace mapping is flushed to memory before
 * get_user_pages() uses a kernel mapping to access the page
 */
#define ARCH_HAS_FLUSH_ANON_PAGE
void flush_anon_page(struct vm_area_struct *vma,
	struct page *page, unsigned long u_vaddr);

#endif	/* CONFIG_ARC_CACHE_VIPT_ALIASING */

/*
 * A new pagecache page has PG_arch_1 clear - thus dcache dirty by default
 * This works around some PIO based drivers which don't call flush_dcache_page
 * to record that they dirtied the dcache
 */
#define PG_dc_clean	PG_arch_1

#define CACHE_COLORS_NUM	4
#define CACHE_COLORS_MSK	(CACHE_COLORS_NUM - 1)
#define CACHE_COLOR(addr)	(((unsigned long)(addr) >> (PAGE_SHIFT)) & CACHE_COLORS_MSK)

/*
 * Simple wrapper over config option
 * Bootup code ensures that hardware matches kernel configuration
 */
static inline int cache_is_vipt_aliasing(void)
{
	return IS_ENABLED(CONFIG_ARC_CACHE_VIPT_ALIASING);
}

/*
 * checks if two addresses (after page aligning) index into same cache set
 */
#define addr_not_cache_congruent(addr1, addr2)				\
({									\
	cache_is_vipt_aliasing() ? 					\
		(CACHE_COLOR(addr1) != CACHE_COLOR(addr2)) : 0;		\
})

#define copy_to_user_page(vma, page, vaddr, dst, src, len)		\
do {									\
	memcpy(dst, src, len);						\
	if (vma->vm_flags & VM_EXEC)					\
		__sync_icache_dcache((unsigned long)(dst), vaddr, len);	\
} while (0)

#define copy_from_user_page(vma, page, vaddr, dst, src, len)		\
	memcpy(dst, src, len);						\

#endif

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