diff options
Diffstat (limited to 'include/asm-m68k/sun3_pgtable.h')
| -rw-r--r-- | include/asm-m68k/sun3_pgtable.h | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/include/asm-m68k/sun3_pgtable.h b/include/asm-m68k/sun3_pgtable.h deleted file mode 100644 index f847ec732d6..00000000000 --- a/include/asm-m68k/sun3_pgtable.h +++ /dev/null @@ -1,234 +0,0 @@ -#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) - -#define PTE_FILE_MAX_BITS 28 - -/* 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) \ - 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 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_file(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; -} - -static inline unsigned long pte_to_pgoff(pte_t pte) -{ - return pte.pte & SUN3_PAGE_PGNUM_MASK; -} - -static inline pte_t pgoff_to_pte(unsigned off) -{ - pte_t pte = { off + SUN3_PAGE_ACCESSED }; - return pte; -} - - -/* 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)) -/* FIXME: should we bother with kmap() here? */ -#define pte_offset_map(pmd, address) ((pte_t *)kmap(pmd_page(*pmd)) + pte_index(address)) -#define pte_offset_map_nested(pmd, address) pte_offset_map(pmd, address) -#define pte_unmap(pte) kunmap(pte) -#define pte_unmap_nested(pte) kunmap(pte) - -/* 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 */ |