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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _SUN3_PGTABLE_H
#define _SUN3_PGTABLE_H

#include <asm/sun3mmu.h>

#ifndef __ASSEMBLY__
#include <asm/virtconvert.h>
#include <linux/linkage.h>

/*
 * This file contains all the things which change drastically for the sun3
 * pagetable stuff, to avoid making too much of a mess of the generic m68k
 * `pgtable.h'; this should only be included from the generic file. --m
 */

/* For virtual address to physical address conversion */
#define VTOP(addr)	__pa(addr)
#define PTOV(addr)	__va(addr)


#endif	/* !__ASSEMBLY__ */

/* These need to be defined for compatibility although the sun3 doesn't use them */
#define _PAGE_NOCACHE030 0x040
#define _CACHEMASK040   (~0x060)
#define _PAGE_NOCACHE_S 0x040

/* Page protection values within PTE. */
#define SUN3_PAGE_VALID     (0x80000000)
#define SUN3_PAGE_WRITEABLE (0x40000000)
#define SUN3_PAGE_SYSTEM    (0x20000000)
#define SUN3_PAGE_NOCACHE   (0x10000000)
#define SUN3_PAGE_ACCESSED  (0x02000000)
#define SUN3_PAGE_MODIFIED  (0x01000000)


/* Externally used page protection values. */
#define _PAGE_PRESENT	(SUN3_PAGE_VALID)
#define _PAGE_ACCESSED	(SUN3_PAGE_ACCESSED)

/* Compound page protection values. */
//todo: work out which ones *should* have SUN3_PAGE_NOCACHE and fix...
// is it just PAGE_KERNEL and PAGE_SHARED?
#define PAGE_NONE	__pgprot(SUN3_PAGE_VALID \
				 | SUN3_PAGE_ACCESSED \
				 | SUN3_PAGE_NOCACHE)
#define PAGE_SHARED	__pgprot(SUN3_PAGE_VALID \
				 | SUN3_PAGE_WRITEABLE \
				 | SUN3_PAGE_ACCESSED \
				 | SUN3_PAGE_NOCACHE)
#define PAGE_COPY	__pgprot(SUN3_PAGE_VALID \
				 | SUN3_PAGE_ACCESSED \
				 | SUN3_PAGE_NOCACHE)
#define PAGE_READONLY	__pgprot(SUN3_PAGE_VALID \
				 | SUN3_PAGE_ACCESSED \
				 | SUN3_PAGE_NOCACHE)
#define PAGE_KERNEL	__pgprot(SUN3_PAGE_VALID \
				 | SUN3_PAGE_WRITEABLE \
				 | SUN3_PAGE_SYSTEM \
				 | SUN3_PAGE_NOCACHE \
				 | SUN3_PAGE_ACCESSED \
				 | SUN3_PAGE_MODIFIED)
#define PAGE_INIT	__pgprot(SUN3_PAGE_VALID \
				 | SUN3_PAGE_WRITEABLE \
				 | SUN3_PAGE_SYSTEM \
				 | SUN3_PAGE_NOCACHE)

/*
 * Page protections for initialising protection_map. The sun3 has only two
 * protection settings, valid (implying read and execute) and writeable. These
 * are as close as we can get...
 */
#define __P000	PAGE_NONE
#define __P001	PAGE_READONLY
#define __P010	PAGE_COPY
#define __P011	PAGE_COPY
#define __P100	PAGE_READONLY
#define __P101	PAGE_READONLY
#define __P110	PAGE_COPY
#define __P111	PAGE_COPY

#define __S000	PAGE_NONE
#define __S001	PAGE_READONLY
#define __S010	PAGE_SHARED
#define __S011	PAGE_SHARED
#define __S100	PAGE_READONLY
#define __S101	PAGE_READONLY
#define __S110	PAGE_SHARED
#define __S111	PAGE_SHARED

/* Use these fake page-protections on PMDs. */
#define SUN3_PMD_VALID	(0x00000001)
#define SUN3_PMD_MASK	(0x0000003F)
#define SUN3_PMD_MAGIC	(0x0000002B)

#ifndef __ASSEMBLY__

/*
 * 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)
{
	pte_val(pte) = (pte_val(pte) & SUN3_PAGE_CHG_MASK) | pgprot_val(newprot);
	return pte;
}

#define pmd_set(pmdp,ptep) do {} while (0)

static inline void pgd_set(pgd_t *pgdp, pmd_t *pmdp)
{
	pgd_val(*pgdp) = virt_to_phys(pmdp);
}

#define __pte_page(pte) \
((unsigned long) __va ((pte_val (pte) & SUN3_PAGE_PGNUM_MASK) << PAGE_SHIFT))
#define __pmd_page(pmd) \
((unsigned long) __va (pmd_val (pmd) & PAGE_MASK))

static inline int pte_none (pte_t pte) { return !pte_val (pte); }
static inline int pte_present (pte_t pte) { return pte_val (pte) & SUN3_PAGE_VALID; }
static inline void pte_clear (struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
	pte_val (*ptep) = 0;
}

#define pte_pfn(pte)            (pte_val(pte) & SUN3_PAGE_PGNUM_MASK)
#define pfn_pte(pfn, pgprot) \
({ pte_t __pte; pte_val(__pte) = pfn | pgprot_val(pgprot); __pte; })

#define pte_page(pte)		virt_to_page(__pte_page(pte))
#define pmd_page(pmd)		virt_to_page(__pmd_page(pmd))


static inline int pmd_none2 (pmd_t *pmd) { return !pmd_val (*pmd); }
#define pmd_none(pmd) pmd_none2(&(pmd))
//static inline int pmd_bad (pmd_t pmd) { return (pmd_val (pmd) & SUN3_PMD_MASK) != SUN3_PMD_MAGIC; }
static inline int pmd_bad2 (pmd_t *pmd) { return 0; }
#define pmd_bad(pmd) pmd_bad2(&(pmd))
static inline int pmd_present2 (pmd_t *pmd) { return pmd_val (*pmd) & SUN3_PMD_VALID; }
/* #define pmd_present(pmd) pmd_present2(&(pmd)) */
#define pmd_present(pmd) (!pmd_none2(&(pmd)))
static inline void pmd_clear (pmd_t *pmdp) { pmd_val (*pmdp) = 0; }

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; }
static inline void pgd_clear (pgd_t *pgdp) {}


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


/*
 * The following only work if pte_present() is true.
 * Undefined behaviour if not...
 * [we have the full set here even if they don't change from m68k]
 */
static inline int pte_write(pte_t pte)		{ return pte_val(pte) & SUN3_PAGE_WRITEABLE; }
static inline int pte_dirty(pte_t pte)		{ return pte_val(pte) & SUN3_PAGE_MODIFIED; }
static inline int pte_young(pte_t pte)		{ return pte_val(pte) & SUN3_PAGE_ACCESSED; }
static inline int pte_special(pte_t pte)	{ return 0; }

static inline pte_t pte_wrprotect(pte_t pte)	{ pte_val(pte) &= ~SUN3_PAGE_WRITEABLE; return pte; }
static inline pte_t pte_mkclean(pte_t pte)	{ pte_val(pte) &= ~SUN3_PAGE_MODIFIED; return pte; }
static inline pte_t pte_mkold(pte_t pte)	{ pte_val(pte) &= ~SUN3_PAGE_ACCESSED; return pte; }
static inline pte_t pte_mkwrite(pte_t pte)	{ pte_val(pte) |= SUN3_PAGE_WRITEABLE; return pte; }
static inline pte_t pte_mkdirty(pte_t pte)	{ pte_val(pte) |= SUN3_PAGE_MODIFIED; return pte; }
static inline pte_t pte_mkyoung(pte_t pte)	{ pte_val(pte) |= SUN3_PAGE_ACCESSED; return pte; }
static inline pte_t pte_mknocache(pte_t pte)	{ pte_val(pte) |= SUN3_PAGE_NOCACHE; return pte; }
// use this version when caches work...
//static inline pte_t pte_mkcache(pte_t pte)	{ pte_val(pte) &= SUN3_PAGE_NOCACHE; return pte; }
// until then, use:
static inline pte_t pte_mkcache(pte_t pte)	{ return pte; }
static inline pte_t pte_mkspecial(pte_t pte)	{ return pte; }

extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
extern pgd_t kernel_pg_dir[PTRS_PER_PGD];

/* Find an entry in a pagetable directory. */
#define pgd_index(address)     ((address) >> PGDIR_SHIFT)

#define pgd_offset(mm, address) \
((mm)->pgd + pgd_index(address))

/* Find an entry in a kernel pagetable directory. */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)

/* Find an entry in the second-level pagetable. */
static inline pmd_t *pmd_offset (pgd_t *pgd, unsigned long address)
{
	return (pmd_t *) pgd;
}

/* Find an entry in the third-level pagetable. */
#define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE-1))
#define pte_offset_kernel(pmd, address) ((pte_t *) __pmd_page(*pmd) + pte_index(address))
#define pte_offset_map(pmd, address) ((pte_t *)page_address(pmd_page(*pmd)) + pte_index(address))
#define pte_unmap(pte) do { } while (0)

/* Macros to (de)construct the fake PTEs representing swap pages. */
#define __swp_type(x)		((x).val & 0x7F)
#define __swp_offset(x)		(((x).val) >> 7)
#define __swp_entry(type,offset) ((swp_entry_t) { ((type) | ((offset) << 7)) })
#define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(x)	((pte_t) { (x).val })

#endif	/* !__ASSEMBLY__ */
#endif	/* !_SUN3_PGTABLE_H */

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Name Type Size Permission Actions
Kbuild File 599 B 0644
MC68328.h File 37.82 KB 0644
MC68EZ328.h File 37.74 KB 0644
MC68VZ328.h File 41.02 KB 0644
a.out-core.h File 1.98 KB 0644
adb_iop.h File 1.09 KB 0644
amigahw.h File 10.49 KB 0644
amigaints.h File 3.5 KB 0644
amigayle.h File 3.19 KB 0644
amipcmcia.h File 2.51 KB 0644
apollohw.h File 2.35 KB 0644
asm-offsets.h File 35 B 0644
asm-prototypes.h File 211 B 0644
atafd.h File 300 B 0644
atafdreg.h File 2.68 KB 0644
atari_joystick.h File 457 B 0644
atari_stdma.h File 514 B 0644
atari_stram.h File 528 B 0644
atarihw.h File 20.3 KB 0644
atariints.h File 5.56 KB 0644
atarikb.h File 1.4 KB 0644
atomic.h File 4.86 KB 0644
bitops.h File 12.19 KB 0644
blinken.h File 641 B 0644
bootinfo.h File 783 B 0644
bootstd.h File 4.64 KB 0644
bug.h File 659 B 0644
bugs.h File 369 B 0644
bvme6000hw.h File 3.45 KB 0644
cache.h File 296 B 0644
cacheflush.h File 133 B 0644
cacheflush_mm.h File 6.92 KB 0644
cacheflush_no.h File 2.61 KB 0644
checksum.h File 3.4 KB 0644
cmpxchg.h File 3.34 KB 0644
coldfire.h File 1.61 KB 0644
contregs.h File 3.31 KB 0644
current.h File 580 B 0644
delay.h File 3.43 KB 0644
div64.h File 858 B 0644
dma-mapping.h File 291 B 0644
dma.h File 16.65 KB 0644
dsp56k.h File 1.24 KB 0644
dvma.h File 9.67 KB 0644
elf.h File 3.07 KB 0644
entry.h File 5.76 KB 0644
export.h File 74 B 0644
fb.h File 921 B 0644
fbio.h File 9.87 KB 0644
flat.h File 1.02 KB 0644
floppy.h File 5.06 KB 0644
fpu.h File 535 B 0644
ftrace.h File 12 B 0644
gpio.h File 2.64 KB 0644
hardirq.h File 594 B 0644
hash.h File 2.07 KB 0644
hp300hw.h File 186 B 0644
hwtest.h File 467 B 0644
ide.h File 1.67 KB 0644
idprom.h File 725 B 0644
intersil.h File 1.11 KB 0644
io.h File 383 B 0644
io_mm.h File 16.19 KB 0644
io_no.h File 5.26 KB 0644
irq.h File 2.57 KB 0644
irqflags.h File 1.61 KB 0644
kexec.h File 732 B 0644
linkage.h File 1.55 KB 0644
m5206sim.h File 6.4 KB 0644
m520xsim.h File 7.15 KB 0644
m523xsim.h File 7.7 KB 0644
m525xsim.h File 10.57 KB 0644
m5272sim.h File 6.05 KB 0644
m527xsim.h File 13.51 KB 0644
m528xsim.h File 9.37 KB 0644
m52xxacr.h File 3.57 KB 0644
m5307sim.h File 7.52 KB 0644
m53xxacr.h File 3.6 KB 0644
m53xxsim.h File 53.97 KB 0644
m5407sim.h File 6.14 KB 0644
m5441xsim.h File 8.5 KB 0644
m54xxacr.h File 4.82 KB 0644
m54xxgpt.h File 3.66 KB 0644
m54xxpci.h File 6.13 KB 0644
m54xxsim.h File 3.8 KB 0644
mac_asc.h File 520 B 0644
mac_baboon.h File 999 B 0644
mac_iop.h File 5.37 KB 0644
mac_oss.h File 1.83 KB 0644
mac_psc.h File 7.25 KB 0644
mac_via.h File 11.44 KB 0644
machdep.h File 1.34 KB 0644
machines.h File 3.13 KB 0644
machw.h File 588 B 0644
macintosh.h File 2.02 KB 0644
macints.h File 3.28 KB 0644
math-emu.h File 6.74 KB 0644
mc146818rtc.h File 598 B 0644
mcf8390.h File 3.75 KB 0644
mcf_pgalloc.h File 2.37 KB 0644
mcf_pgtable.h File 9.89 KB 0644
mcfclk.h File 1.01 KB 0644
mcfdma.h File 6.51 KB 0644
mcfgpio.h File 8.48 KB 0644
mcfintc.h File 3.09 KB 0644
mcfmmu.h File 3.67 KB 0644
mcfpit.h File 2.22 KB 0644
mcfqspi.h File 1.82 KB 0644
mcfsim.h File 1.5 KB 0644
mcfslt.h File 1.21 KB 0644
mcftimer.h File 2.3 KB 0644
mcfuart.h File 6.91 KB 0644
mcfwdebug.h File 4.99 KB 0644
mmu.h File 243 B 0644
mmu_context.h File 7.2 KB 0644
mmzone.h File 264 B 0644
module.h File 847 B 0644
motorola_pgalloc.h File 2.26 KB 0644
motorola_pgtable.h File 9.2 KB 0644
movs.h File 1.44 KB 0644
mvme147hw.h File 2.81 KB 0644
mvme16xhw.h File 2.16 KB 0644
natfeat.h File 533 B 0644
nettel.h File 2.95 KB 0644
nubus.h File 1.21 KB 0644
openprom.h File 7.98 KB 0644
oplib.h File 9.54 KB 0644
page.h File 1.47 KB 0644
page_mm.h File 4.06 KB 0644
page_no.h File 1.28 KB 0644
page_offset.h File 256 B 0644
parport.h File 837 B 0644
pci.h File 458 B 0644
pgalloc.h File 444 B 0644
pgtable.h File 127 B 0644
pgtable_mm.h File 4.84 KB 0644
pgtable_no.h File 1.57 KB 0644
processor.h File 3.59 KB 0644
ptrace.h File 643 B 0644
q40_master.h File 2.28 KB 0644
q40ints.h File 749 B 0644
quicc_simple.h File 1.79 KB 0644
raw_io.h File 11.41 KB 0644
segment.h File 1.42 KB 0644
serial.h File 1.14 KB 0644
setup.h File 9.25 KB 0644
signal.h File 1.34 KB 0644
smp.h File 32 B 0644
string.h File 1.68 KB 0644
sun3-head.h File 353 B 0644
sun3_pgalloc.h File 2.26 KB 0644
sun3_pgtable.h File 7.65 KB 0644
sun3ints.h File 989 B 0644
sun3mmu.h File 4.91 KB 0644
sun3x.h File 868 B 0644
sun3xflop.h File 5.62 KB 0644
sun3xprom.h File 1.31 KB 0644
switch_to.h File 1.51 KB 0644
thread_info.h File 2.02 KB 0644
timex.h File 974 B 0644
tlb.h File 486 B 0644
tlbflush.h File 5.95 KB 0644
traps.h File 8.33 KB 0644
uaccess.h File 152 B 0644
uaccess_mm.h File 10.31 KB 0644
uaccess_no.h File 3.69 KB 0644
ucontext.h File 570 B 0644
unaligned.h File 600 B 0644
unistd.h File 952 B 0644
user.h File 3.78 KB 0644
vga.h File 651 B 0644
virtconvert.h File 947 B 0644
zorro.h File 1.17 KB 0644