FM / asm

/usr/src/linux-headers-5.15.0-190/arch/csky/include/asm/

/usr/src/linux-headers-5.15.0-190/arch/csky/include/asm

Name	Size	Mode	Actions
vdso/	-	0755	rm
addrspace.h	231	0644	edit dl rm
asid.h	2440	0644	edit dl rm
barrier.h	2533	0644	edit dl rm
bitops.h	1363	0644	edit dl rm
bug.h	565	0644	edit dl rm
cache.h	861	0644	edit dl rm
cacheflush.h	193	0644	edit dl rm
checksum.h	944	0644	edit dl rm
clocksource.h	159	0644	edit dl rm
cmpxchg.h	1824	0644	edit dl rm
elf.h	2723	0644	edit dl rm
fixmap.h	747	0644	edit dl rm
ftrace.h	558	0644	edit dl rm
futex.h	2605	0644	edit dl rm
highmem.h	1114	0644	edit dl rm
io.h	1384	0644	edit dl rm
irqflags.h	1132	0644	edit dl rm
irq_work.h	208	0644	edit dl rm
Kbuild	199	0644	edit dl rm
kprobes.h	1158	0644	edit dl rm
memory.h	657	0644	edit dl rm
mmu.h	216	0644	edit dl rm
mmu_context.h	959	0644	edit dl rm
page.h	2757	0644	edit dl rm
pci.h	680	0644	edit dl rm
perf_event.h	359	0644	edit dl rm
pgalloc.h	1657	0644	edit dl rm
pgtable.h	6985	0644	edit dl rm
probes.h	554	0644	edit dl rm
processor.h	2525	0644	edit dl rm
ptrace.h	2476	0644	edit dl rm
reg_ops.h	382	0644	edit dl rm
seccomp.h	283	0644	edit dl rm
segment.h	187	0644	edit dl rm
shmparam.h	197	0644	edit dl rm
smp.h	626	0644	edit dl rm
spinlock.h	1892	0644	edit dl rm
spinlock_types.h	504	0644	edit dl rm
stackprotector.h	705	0644	edit dl rm
string.h	233	0644	edit dl rm
switch_to.h	923	0644	edit dl rm
syscall.h	1563	0644	edit dl rm
syscalls.h	351	0644	edit dl rm
tcm.h	665	0644	edit dl rm
thread_info.h	2866	0644	edit dl rm
tlb.h	508	0644	edit dl rm
tlbflush.h	824	0644	edit dl rm
traps.h	796	0644	edit dl rm
uaccess.h	5271	0644	edit dl rm
unistd.h	106	0644	edit dl rm
uprobes.h	669	0644	edit dl rm
vdso.h	784	0644	edit dl rm
vmalloc.h	90	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-190/arch/csky/include/asm/pgtable.h (6985B)

/* SPDX-License-Identifier: GPL-2.0 */

#ifndef __ASM_CSKY_PGTABLE_H
#define __ASM_CSKY_PGTABLE_H

#include <asm/fixmap.h>
#include <asm/memory.h>
#include <asm/addrspace.h>
#include <abi/pgtable-bits.h>
#include <asm-generic/pgtable-nopmd.h>

#define PGDIR_SHIFT		22
#define PGDIR_SIZE		(1UL << PGDIR_SHIFT)
#define PGDIR_MASK		(~(PGDIR_SIZE-1))

#define USER_PTRS_PER_PGD	(PAGE_OFFSET/PGDIR_SIZE)

/*
 * C-SKY is two-level paging structure:
 */
#define PGD_ORDER	0
#define PTE_ORDER	0

#define PTRS_PER_PGD	((PAGE_SIZE << PGD_ORDER) / sizeof(pgd_t))
#define PTRS_PER_PMD	1
#define PTRS_PER_PTE	((PAGE_SIZE << PTE_ORDER) / sizeof(pte_t))

#define pte_ERROR(e) \
	pr_err("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, (e).pte_low)
#define pgd_ERROR(e) \
	pr_err("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))

#define pmd_page(pmd)	(pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
#define pte_clear(mm, addr, ptep)	set_pte((ptep), \
	(((unsigned int) addr >= PAGE_OFFSET) ? __pte(_PAGE_GLOBAL) : __pte(0)))
#define pte_none(pte)		(!(pte_val(pte) & ~_PAGE_GLOBAL))
#define pte_present(pte)	(pte_val(pte) & _PAGE_PRESENT)
#define pte_pfn(x)	((unsigned long)((x).pte_low >> PAGE_SHIFT))
#define pfn_pte(pfn, prot) __pte(((unsigned long long)(pfn) << PAGE_SHIFT) \
				| pgprot_val(prot))

#define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(x)		((pte_t) { (x).val })

#define pte_page(x)			pfn_to_page(pte_pfn(x))
#define __mk_pte(page_nr, pgprot)	__pte(((page_nr) << PAGE_SHIFT) | \
					pgprot_val(pgprot))

/*
 * C-SKY only has VALID and DIRTY bit in hardware. So we need to use the
 * two bits emulate PRESENT, READ, WRITE, EXEC, MODIFIED, ACCESSED.
 */
#define _PAGE_BASE	(_PAGE_PRESENT | _PAGE_ACCESSED)

#define _PAGE_CHG_MASK	(~(unsigned long) \
				(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
				_CACHE_MASK | _PAGE_GLOBAL))

#define MAX_SWAPFILES_CHECK() \
		BUILD_BUG_ON(MAX_SWAPFILES_SHIFT != 5)

#define __P000	PAGE_NONE
#define __P001	PAGE_READ
#define __P010	PAGE_READ
#define __P011	PAGE_READ
#define __P100	PAGE_READ
#define __P101	PAGE_READ
#define __P110	PAGE_READ
#define __P111	PAGE_READ

#define __S000	PAGE_NONE
#define __S001	PAGE_READ
#define __S010	PAGE_WRITE
#define __S011	PAGE_WRITE
#define __S100	PAGE_READ
#define __S101	PAGE_READ
#define __S110	PAGE_WRITE
#define __S111	PAGE_WRITE

extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)];
#define ZERO_PAGE(vaddr)	(virt_to_page(empty_zero_page))

extern void load_pgd(unsigned long pg_dir);
extern pte_t invalid_pte_table[PTRS_PER_PTE];

static inline void set_pte(pte_t *p, pte_t pte)
{
	*p = pte;
#if defined(CONFIG_CPU_NEED_TLBSYNC)
	dcache_wb_line((u32)p);
#endif
	/* prevent out of order excution */
	smp_mb();
}
#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)

static inline pte_t *pmd_page_vaddr(pmd_t pmd)
{
	unsigned long ptr;

ptr = pmd_val(pmd);

return __va(ptr);
}

#define pmd_phys(pmd) pmd_val(pmd)

static inline void set_pmd(pmd_t *p, pmd_t pmd)
{
	*p = pmd;
#if defined(CONFIG_CPU_NEED_TLBSYNC)
	dcache_wb_line((u32)p);
#endif
	/* prevent specul excute */
	smp_mb();
}

static inline int pmd_none(pmd_t pmd)
{
	return pmd_val(pmd) == __pa(invalid_pte_table);
}

#define pmd_bad(pmd)	(pmd_val(pmd) & ~PAGE_MASK)

static inline int pmd_present(pmd_t pmd)
{
	return (pmd_val(pmd) != __pa(invalid_pte_table));
}

static inline void pmd_clear(pmd_t *p)
{
	pmd_val(*p) = (__pa(invalid_pte_table));
#if defined(CONFIG_CPU_NEED_TLBSYNC)
	dcache_wb_line((u32)p);
#endif
}

/*
 * The following only work if pte_present() is true.
 * Undefined behaviour if not..
 */
static inline int pte_read(pte_t pte)
{
	return pte.pte_low & _PAGE_READ;
}

static inline int pte_write(pte_t pte)
{
	return (pte).pte_low & _PAGE_WRITE;
}

static inline int pte_dirty(pte_t pte)
{
	return (pte).pte_low & _PAGE_MODIFIED;
}

static inline int pte_young(pte_t pte)
{
	return (pte).pte_low & _PAGE_ACCESSED;
}

static inline pte_t pte_wrprotect(pte_t pte)
{
	pte_val(pte) &= ~(_PAGE_WRITE | _PAGE_DIRTY);
	return pte;
}

static inline pte_t pte_mkclean(pte_t pte)
{
	pte_val(pte) &= ~(_PAGE_MODIFIED|_PAGE_DIRTY);
	return pte;
}

static inline pte_t pte_mkold(pte_t pte)
{
	pte_val(pte) &= ~(_PAGE_ACCESSED|_PAGE_VALID);
	return pte;
}

static inline pte_t pte_mkwrite(pte_t pte)
{
	pte_val(pte) |= _PAGE_WRITE;
	if (pte_val(pte) & _PAGE_MODIFIED)
		pte_val(pte) |= _PAGE_DIRTY;
	return pte;
}

static inline pte_t pte_mkdirty(pte_t pte)
{
	pte_val(pte) |= _PAGE_MODIFIED;
	if (pte_val(pte) & _PAGE_WRITE)
		pte_val(pte) |= _PAGE_DIRTY;
	return pte;
}

static inline pte_t pte_mkyoung(pte_t pte)
{
	pte_val(pte) |= _PAGE_ACCESSED;
	if (pte_val(pte) & _PAGE_READ)
		pte_val(pte) |= _PAGE_VALID;
	return pte;
}

#define __HAVE_PHYS_MEM_ACCESS_PROT
struct file;
extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
				     unsigned long size, pgprot_t vma_prot);

/*
 * Macro to make mark a page protection value as "uncacheable".  Note
 * that "protection" is really a misnomer here as the protection value
 * contains the memory attribute bits, dirty bits, and various other
 * bits as well.
 */
#define pgprot_noncached pgprot_noncached

static inline pgprot_t pgprot_noncached(pgprot_t _prot)
{
	unsigned long prot = pgprot_val(_prot);

prot = (prot & ~_CACHE_MASK) | _CACHE_UNCACHED | _PAGE_SO;

return __pgprot(prot);
}

#define pgprot_writecombine pgprot_writecombine
static inline pgprot_t pgprot_writecombine(pgprot_t _prot)
{
	unsigned long prot = pgprot_val(_prot);

prot = (prot & ~_CACHE_MASK) | _CACHE_UNCACHED;

return __pgprot(prot);
}

/*
 * Conversion functions: convert a page and protection to a page entry,
 * and a page entry and page directory to the page they refer to.
 */
#define mk_pte(page, pgprot)    pfn_pte(page_to_pfn(page), (pgprot))
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
	return __pte((pte_val(pte) & _PAGE_CHG_MASK) |
		     (pgprot_val(newprot)));
}

extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
extern void paging_init(void);

void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
		      pte_t *pte);

/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
#define kern_addr_valid(addr)	(1)

#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
	remap_pfn_range(vma, vaddr, pfn, size, prot)

#endif /* __ASM_CSKY_PGTABLE_H */

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