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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_M32R_PGTABLE_2LEVEL_H
#define _ASM_M32R_PGTABLE_2LEVEL_H
#ifdef __KERNEL__

/*
 * traditional M32R two-level paging structure:
 */

#define PGDIR_SHIFT	22
#define PTRS_PER_PGD	1024

/*
 * the M32R is two-level, so we don't really have any
 * PMD directory physically.
 */
#define __PAGETABLE_PMD_FOLDED
#define PMD_SHIFT	22
#define PTRS_PER_PMD	1

#define PTRS_PER_PTE	1024

#define pte_ERROR(e) \
	printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
#define pmd_ERROR(e) \
	printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e))
#define pgd_ERROR(e) \
	printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))

/*
 * The "pgd_xxx()" functions here are trivial for a folded two-level
 * setup: the pgd is never bad, and a pmd always exists (as it's folded
 * into the pgd entry)
 */
static inline int pgd_none(pgd_t pgd)	{ return 0; }
static inline int pgd_bad(pgd_t pgd)	{ return 0; }
static inline int pgd_present(pgd_t pgd)	{ return 1; }
#define pgd_clear(xp)				do { } while (0)

/*
 * Certain architectures need to do special things when PTEs
 * within a page table are directly modified.  Thus, the following
 * hook is made available.
 */
#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)

/*
 * (pmds are folded into pgds so this doesn't get actually called,
 * but the define is needed for a generic inline function.)
 */
#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
#define set_pgd(pgdptr, pgdval) (*(pgdptr) = pgdval)

#define pgd_page_vaddr(pgd) \
((unsigned long) __va(pgd_val(pgd) & PAGE_MASK))

#ifndef CONFIG_DISCONTIGMEM
#define pgd_page(pgd)	(mem_map + ((pgd_val(pgd) >> PAGE_SHIFT) - PFN_BASE))
#endif /* !CONFIG_DISCONTIGMEM */

static inline pmd_t *pmd_offset(pgd_t * dir, unsigned long address)
{
	return (pmd_t *) dir;
}

#define ptep_get_and_clear(mm,addr,xp)	__pte(xchg(&(xp)->pte, 0))
#define pte_same(a, b)		(pte_val(a) == pte_val(b))
#define pte_page(x)		pfn_to_page(pte_pfn(x))
#define pte_none(x)		(!pte_val(x))
#define pte_pfn(x)		(pte_val(x) >> PAGE_SHIFT)
#define pfn_pte(pfn, prot)	__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
#define pfn_pmd(pfn, prot)	__pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))

#endif /* __KERNEL__ */
#endif /* _ASM_M32R_PGTABLE_2LEVEL_H */

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Name Type Size Permission Actions
m32104ut Folder 0755
m32700ut Folder 0755
mappi2 Folder 0755
mappi3 Folder 0755
opsput Folder 0755
Kbuild File 318 B 0644
addrspace.h File 1.67 KB 0644
asm-offsets.h File 35 B 0644
assembler.h File 4.2 KB 0644
atomic.h File 6.29 KB 0644
barrier.h File 506 B 0644
bitops.h File 6.23 KB 0644
bug.h File 115 B 0644
bugs.h File 410 B 0644
cache.h File 222 B 0644
cachectl.h File 739 B 0644
cacheflush.h File 3.2 KB 0644
checksum.h File 4.83 KB 0644
cmpxchg.h File 4.86 KB 0644
dcache_clear.h File 1.01 KB 0644
delay.h File 31 B 0644
device.h File 148 B 0644
div64.h File 31 B 0644
dma-mapping.h File 570 B 0644
dma.h File 281 B 0644
elf.h File 3.64 KB 0644
emergency-restart.h File 188 B 0644
fb.h File 414 B 0644
flat.h File 4.2 KB 0644
ftrace.h File 12 B 0644
futex.h File 82 B 0644
hardirq.h File 214 B 0644
hw_irq.h File 87 B 0644
io.h File 6.44 KB 0644
irq.h File 2.94 KB 0644
irq_regs.h File 34 B 0644
irqflags.h File 2.24 KB 0644
kdebug.h File 32 B 0644
kmap_types.h File 251 B 0644
linkage.h File 177 B 0644
local.h File 7.8 KB 0644
local64.h File 33 B 0644
m32102.h File 14.71 KB 0644
m32r.h File 5.7 KB 0644
m32r_mp_fpga.h File 14.89 KB 0644
mc146818rtc.h File 671 B 0644
mmu.h File 403 B 0644
mmu_context.h File 4.23 KB 0644
mmzone.h File 1.29 KB 0644
page.h File 2.62 KB 0644
pci.h File 147 B 0644
percpu.h File 165 B 0644
pgalloc.h File 1.84 KB 0644
pgtable-2level.h File 2.31 KB 0644
pgtable.h File 9.7 KB 0644
processor.h File 2.93 KB 0644
ptrace.h File 1.3 KB 0644
rtc.h File 1.99 KB 0644
s1d13806.h File 9.84 KB 0644
segment.h File 228 B 0644
serial.h File 187 B 0644
setup.h File 1022 B 0644
shmparam.h File 197 B 0644
signal.h File 561 B 0644
smp.h File 3.5 KB 0644
spinlock.h File 7.15 KB 0644
spinlock_types.h File 520 B 0644
string.h File 378 B 0644
switch_to.h File 1.48 KB 0644
syscall.h File 252 B 0644
termios.h File 1.74 KB 0644
thread_info.h File 3.71 KB 0644
timex.h File 581 B 0644
tlb.h File 483 B 0644
tlbflush.h File 2.94 KB 0644
topology.h File 167 B 0644
types.h File 258 B 0644
uaccess.h File 15.3 KB 0644
ucontext.h File 321 B 0644
unaligned.h File 592 B 0644
unistd.h File 1.23 KB 0644
user.h File 2.1 KB 0644
vga.h File 436 B 0644
xor.h File 148 B 0644