parisc: move include/asm-parisc to arch/parisc/include/asm

1 files changed, 0 insertions, 508 deletions

diff --git a/include/asm-parisc/pgtable.h b/include/asm-parisc/pgtable.h
deleted file mode 100644
index 470a4b88124..00000000000
--- a/include/asm-parisc/pgtable.h
+++ /dev/null
@@ -1,508 +0,0 @@
-#ifndef _PARISC_PGTABLE_H
-#define _PARISC_PGTABLE_H
-
-#include <asm-generic/4level-fixup.h>
-
-#include <asm/fixmap.h>
-
-#ifndef __ASSEMBLY__
-/*
- * we simulate an x86-style page table for the linux mm code
- */
-
-#include <linux/mm.h>		/* for vm_area_struct */
-#include <linux/bitops.h>
-#include <asm/processor.h>
-#include <asm/cache.h>
-
-/*
- * kern_addr_valid(ADDR) tests if ADDR is pointing to valid kernel
- * memory.  For the return value to be meaningful, ADDR must be >=
- * PAGE_OFFSET.  This operation can be relatively expensive (e.g.,
- * require a hash-, or multi-level tree-lookup or something of that
- * sort) but it guarantees to return TRUE only if accessing the page
- * at that address does not cause an error.  Note that there may be
- * addresses for which kern_addr_valid() returns FALSE even though an
- * access would not cause an error (e.g., this is typically true for
- * memory mapped I/O regions.
- *
- * XXX Need to implement this for parisc.
- */
-#define kern_addr_valid(addr)	(1)
-
-/* 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)                                 \
-        do{                                                     \
-                *(pteptr) = (pteval);                           \
-        } while(0)
-#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
-
-#endif /* !__ASSEMBLY__ */
-
-#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__, (unsigned long)pmd_val(e))
-#define pgd_ERROR(e) \
-	printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, (unsigned long)pgd_val(e))
-
-/* This is the size of the initially mapped kernel memory */
-#ifdef CONFIG_64BIT
-#define KERNEL_INITIAL_ORDER	24	/* 0 to 1<<24 = 16MB */
-#else
-#define KERNEL_INITIAL_ORDER	23	/* 0 to 1<<23 = 8MB */
-#endif
-#define KERNEL_INITIAL_SIZE	(1 << KERNEL_INITIAL_ORDER)
-
-#if defined(CONFIG_64BIT) && defined(CONFIG_PARISC_PAGE_SIZE_4KB)
-#define PT_NLEVELS	3
-#define PGD_ORDER	1 /* Number of pages per pgd */
-#define PMD_ORDER	1 /* Number of pages per pmd */
-#define PGD_ALLOC_ORDER	2 /* first pgd contains pmd */
-#else
-#define PT_NLEVELS	2
-#define PGD_ORDER	1 /* Number of pages per pgd */
-#define PGD_ALLOC_ORDER	PGD_ORDER
-#endif
-
-/* Definitions for 3rd level (we use PLD here for Page Lower directory
- * because PTE_SHIFT is used lower down to mean shift that has to be
- * done to get usable bits out of the PTE) */
-#define PLD_SHIFT	PAGE_SHIFT
-#define PLD_SIZE	PAGE_SIZE
-#define BITS_PER_PTE	(PAGE_SHIFT - BITS_PER_PTE_ENTRY)
-#define PTRS_PER_PTE    (1UL << BITS_PER_PTE)
-
-/* Definitions for 2nd level */
-#define pgtable_cache_init()	do { } while (0)
-
-#define PMD_SHIFT       (PLD_SHIFT + BITS_PER_PTE)
-#define PMD_SIZE	(1UL << PMD_SHIFT)
-#define PMD_MASK	(~(PMD_SIZE-1))
-#if PT_NLEVELS == 3
-#define BITS_PER_PMD	(PAGE_SHIFT + PMD_ORDER - BITS_PER_PMD_ENTRY)
-#else
-#define BITS_PER_PMD	0
-#endif
-#define PTRS_PER_PMD    (1UL << BITS_PER_PMD)
-
-/* Definitions for 1st level */
-#define PGDIR_SHIFT	(PMD_SHIFT + BITS_PER_PMD)
-#define BITS_PER_PGD	(PAGE_SHIFT + PGD_ORDER - BITS_PER_PGD_ENTRY)
-#define PGDIR_SIZE	(1UL << PGDIR_SHIFT)
-#define PGDIR_MASK	(~(PGDIR_SIZE-1))
-#define PTRS_PER_PGD    (1UL << BITS_PER_PGD)
-#define USER_PTRS_PER_PGD       PTRS_PER_PGD
-
-#define MAX_ADDRBITS	(PGDIR_SHIFT + BITS_PER_PGD)
-#define MAX_ADDRESS	(1UL << MAX_ADDRBITS)
-
-#define SPACEID_SHIFT	(MAX_ADDRBITS - 32)
-
-/* This calculates the number of initial pages we need for the initial
- * page tables */
-#if (KERNEL_INITIAL_ORDER) >= (PMD_SHIFT)
-# define PT_INITIAL	(1 << (KERNEL_INITIAL_ORDER - PMD_SHIFT))
-#else
-# define PT_INITIAL	(1)  /* all initial PTEs fit into one page */
-#endif
-
-/*
- * pgd entries used up by user/kernel:
- */
-
-#define FIRST_USER_ADDRESS	0
-
-/* NB: The tlb miss handlers make certain assumptions about the order */
-/*     of the following bits, so be careful (One example, bits 25-31  */
-/*     are moved together in one instruction).                        */
-
-#define _PAGE_READ_BIT     31   /* (0x001) read access allowed */
-#define _PAGE_WRITE_BIT    30   /* (0x002) write access allowed */
-#define _PAGE_EXEC_BIT     29   /* (0x004) execute access allowed */
-#define _PAGE_GATEWAY_BIT  28   /* (0x008) privilege promotion allowed */
-#define _PAGE_DMB_BIT      27   /* (0x010) Data Memory Break enable (B bit) */
-#define _PAGE_DIRTY_BIT    26   /* (0x020) Page Dirty (D bit) */
-#define _PAGE_FILE_BIT	_PAGE_DIRTY_BIT	/* overload this bit */
-#define _PAGE_REFTRAP_BIT  25   /* (0x040) Page Ref. Trap enable (T bit) */
-#define _PAGE_NO_CACHE_BIT 24   /* (0x080) Uncached Page (U bit) */
-#define _PAGE_ACCESSED_BIT 23   /* (0x100) Software: Page Accessed */
-#define _PAGE_PRESENT_BIT  22   /* (0x200) Software: translation valid */
-#define _PAGE_FLUSH_BIT    21   /* (0x400) Software: translation valid */
-				/*             for cache flushing only */
-#define _PAGE_USER_BIT     20   /* (0x800) Software: User accessible page */
-
-/* N.B. The bits are defined in terms of a 32 bit word above, so the */
-/*      following macro is ok for both 32 and 64 bit.                */
-
-#define xlate_pabit(x) (31 - x)
-
-/* this defines the shift to the usable bits in the PTE it is set so
- * that the valid bits _PAGE_PRESENT_BIT and _PAGE_USER_BIT are set
- * to zero */
-#define PTE_SHIFT	   	xlate_pabit(_PAGE_USER_BIT)
-
-/* PFN_PTE_SHIFT defines the shift of a PTE value to access the PFN field */
-#define PFN_PTE_SHIFT		12
-
-
-/* this is how many bits may be used by the file functions */
-#define PTE_FILE_MAX_BITS	(BITS_PER_LONG - PTE_SHIFT)
-
-#define pte_to_pgoff(pte) (pte_val(pte) >> PTE_SHIFT)
-#define pgoff_to_pte(off) ((pte_t) { ((off) << PTE_SHIFT) | _PAGE_FILE })
-
-#define _PAGE_READ     (1 << xlate_pabit(_PAGE_READ_BIT))
-#define _PAGE_WRITE    (1 << xlate_pabit(_PAGE_WRITE_BIT))
-#define _PAGE_RW       (_PAGE_READ | _PAGE_WRITE)
-#define _PAGE_EXEC     (1 << xlate_pabit(_PAGE_EXEC_BIT))
-#define _PAGE_GATEWAY  (1 << xlate_pabit(_PAGE_GATEWAY_BIT))
-#define _PAGE_DMB      (1 << xlate_pabit(_PAGE_DMB_BIT))
-#define _PAGE_DIRTY    (1 << xlate_pabit(_PAGE_DIRTY_BIT))
-#define _PAGE_REFTRAP  (1 << xlate_pabit(_PAGE_REFTRAP_BIT))
-#define _PAGE_NO_CACHE (1 << xlate_pabit(_PAGE_NO_CACHE_BIT))
-#define _PAGE_ACCESSED (1 << xlate_pabit(_PAGE_ACCESSED_BIT))
-#define _PAGE_PRESENT  (1 << xlate_pabit(_PAGE_PRESENT_BIT))
-#define _PAGE_FLUSH    (1 << xlate_pabit(_PAGE_FLUSH_BIT))
-#define _PAGE_USER     (1 << xlate_pabit(_PAGE_USER_BIT))
-#define _PAGE_FILE     (1 << xlate_pabit(_PAGE_FILE_BIT))
-
-#define _PAGE_TABLE	(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE |  _PAGE_DIRTY | _PAGE_ACCESSED)
-#define _PAGE_CHG_MASK	(PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
-#define _PAGE_KERNEL	(_PAGE_PRESENT | _PAGE_EXEC | _PAGE_READ | _PAGE_WRITE | _PAGE_DIRTY | _PAGE_ACCESSED)
-
-/* The pgd/pmd contains a ptr (in phys addr space); since all pgds/pmds
- * are page-aligned, we don't care about the PAGE_OFFSET bits, except
- * for a few meta-information bits, so we shift the address to be
- * able to effectively address 40/42/44-bits of physical address space
- * depending on 4k/16k/64k PAGE_SIZE */
-#define _PxD_PRESENT_BIT   31
-#define _PxD_ATTACHED_BIT  30
-#define _PxD_VALID_BIT     29
-
-#define PxD_FLAG_PRESENT  (1 << xlate_pabit(_PxD_PRESENT_BIT))
-#define PxD_FLAG_ATTACHED (1 << xlate_pabit(_PxD_ATTACHED_BIT))
-#define PxD_FLAG_VALID    (1 << xlate_pabit(_PxD_VALID_BIT))
-#define PxD_FLAG_MASK     (0xf)
-#define PxD_FLAG_SHIFT    (4)
-#define PxD_VALUE_SHIFT   (8) /* (PAGE_SHIFT-PxD_FLAG_SHIFT) */
-
-#ifndef __ASSEMBLY__
-
-#define PAGE_NONE	__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
-#define PAGE_SHARED	__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_ACCESSED)
-/* Others seem to make this executable, I don't know if that's correct
-   or not.  The stack is mapped this way though so this is necessary
-   in the short term - dhd@linuxcare.com, 2000-08-08 */
-#define PAGE_READONLY	__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED)
-#define PAGE_WRITEONLY  __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_WRITE | _PAGE_ACCESSED)
-#define PAGE_EXECREAD   __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_EXEC |_PAGE_ACCESSED)
-#define PAGE_COPY       PAGE_EXECREAD
-#define PAGE_RWX        __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_EXEC |_PAGE_ACCESSED)
-#define PAGE_KERNEL	__pgprot(_PAGE_KERNEL)
-#define PAGE_KERNEL_RO	__pgprot(_PAGE_KERNEL & ~_PAGE_WRITE)
-#define PAGE_KERNEL_UNC	__pgprot(_PAGE_KERNEL | _PAGE_NO_CACHE)
-#define PAGE_GATEWAY    __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_GATEWAY| _PAGE_READ)
-#define PAGE_FLUSH      __pgprot(_PAGE_FLUSH)
-
-
-/*
- * We could have an execute only page using "gateway - promote to priv
- * level 3", but that is kind of silly. So, the way things are defined
- * now, we must always have read permission for pages with execute
- * permission. For the fun of it we'll go ahead and support write only
- * pages.
- */
-
-	 /*xwr*/
-#define __P000  PAGE_NONE
-#define __P001  PAGE_READONLY
-#define __P010  __P000 /* copy on write */
-#define __P011  __P001 /* copy on write */
-#define __P100  PAGE_EXECREAD
-#define __P101  PAGE_EXECREAD
-#define __P110  __P100 /* copy on write */
-#define __P111  __P101 /* copy on write */
-
-#define __S000  PAGE_NONE
-#define __S001  PAGE_READONLY
-#define __S010  PAGE_WRITEONLY
-#define __S011  PAGE_SHARED
-#define __S100  PAGE_EXECREAD
-#define __S101  PAGE_EXECREAD
-#define __S110  PAGE_RWX
-#define __S111  PAGE_RWX
-
-
-extern pgd_t swapper_pg_dir[]; /* declared in init_task.c */
-
-/* initial page tables for 0-8MB for kernel */
-
-extern pte_t pg0[];
-
-/* zero page used for uninitialized stuff */
-
-extern unsigned long *empty_zero_page;
-
-/*
- * ZERO_PAGE is a global shared page that is always zero: used
- * for zero-mapped memory areas etc..
- */
-
-#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
-
-#define pte_none(x)     ((pte_val(x) == 0) || (pte_val(x) & _PAGE_FLUSH))
-#define pte_present(x)	(pte_val(x) & _PAGE_PRESENT)
-#define pte_clear(mm,addr,xp)	do { pte_val(*(xp)) = 0; } while (0)
-
-#define pmd_flag(x)	(pmd_val(x) & PxD_FLAG_MASK)
-#define pmd_address(x)	((unsigned long)(pmd_val(x) &~ PxD_FLAG_MASK) << PxD_VALUE_SHIFT)
-#define pgd_flag(x)	(pgd_val(x) & PxD_FLAG_MASK)
-#define pgd_address(x)	((unsigned long)(pgd_val(x) &~ PxD_FLAG_MASK) << PxD_VALUE_SHIFT)
-
-#if PT_NLEVELS == 3
-/* The first entry of the permanent pmd is not there if it contains
- * the gateway marker */
-#define pmd_none(x)	(!pmd_val(x) || pmd_flag(x) == PxD_FLAG_ATTACHED)
-#else
-#define pmd_none(x)	(!pmd_val(x))
-#endif
-#define pmd_bad(x)	(!(pmd_flag(x) & PxD_FLAG_VALID))
-#define pmd_present(x)	(pmd_flag(x) & PxD_FLAG_PRESENT)
-static inline void pmd_clear(pmd_t *pmd) {
-#if PT_NLEVELS == 3
-	if (pmd_flag(*pmd) & PxD_FLAG_ATTACHED)
-		/* This is the entry pointing to the permanent pmd
-		 * attached to the pgd; cannot clear it */
-		__pmd_val_set(*pmd, PxD_FLAG_ATTACHED);
-	else
-#endif
-		__pmd_val_set(*pmd,  0);
-}
-
-
-
-#if PT_NLEVELS == 3
-#define pgd_page_vaddr(pgd) ((unsigned long) __va(pgd_address(pgd)))
-#define pgd_page(pgd)	virt_to_page((void *)pgd_page_vaddr(pgd))
-
-/* For 64 bit we have three level tables */
-
-#define pgd_none(x)     (!pgd_val(x))
-#define pgd_bad(x)      (!(pgd_flag(x) & PxD_FLAG_VALID))
-#define pgd_present(x)  (pgd_flag(x) & PxD_FLAG_PRESENT)
-static inline void pgd_clear(pgd_t *pgd) {
-#if PT_NLEVELS == 3
-	if(pgd_flag(*pgd) & PxD_FLAG_ATTACHED)
-		/* This is the permanent pmd attached to the pgd; cannot
-		 * free it */
-		return;
-#endif
-	__pgd_val_set(*pgd, 0);
-}
-#else
-/*
- * 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; }
-static inline void pgd_clear(pgd_t * pgdp)	{ }
-#endif
-
-/*
- * The following only work if pte_present() is true.
- * Undefined behaviour if not..
- */
-static inline int pte_dirty(pte_t pte)		{ return pte_val(pte) & _PAGE_DIRTY; }
-static inline int pte_young(pte_t pte)		{ return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_write(pte_t pte)		{ return pte_val(pte) & _PAGE_WRITE; }
-static inline int pte_file(pte_t pte)		{ return pte_val(pte) & _PAGE_FILE; }
-static inline int pte_special(pte_t pte)	{ return 0; }
-
-static inline pte_t pte_mkclean(pte_t pte)	{ pte_val(pte) &= ~_PAGE_DIRTY; return pte; }
-static inline pte_t pte_mkold(pte_t pte)	{ pte_val(pte) &= ~_PAGE_ACCESSED; return pte; }
-static inline pte_t pte_wrprotect(pte_t pte)	{ pte_val(pte) &= ~_PAGE_WRITE; return pte; }
-static inline pte_t pte_mkdirty(pte_t pte)	{ pte_val(pte) |= _PAGE_DIRTY; return pte; }
-static inline pte_t pte_mkyoung(pte_t pte)	{ pte_val(pte) |= _PAGE_ACCESSED; return pte; }
-static inline pte_t pte_mkwrite(pte_t pte)	{ pte_val(pte) |= _PAGE_WRITE; return pte; }
-static inline pte_t pte_mkspecial(pte_t pte)	{ return pte; }
-
-/*
- * 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(addr,pgprot) \
-({									\
-	pte_t __pte;							\
-									\
-	pte_val(__pte) = ((((addr)>>PAGE_SHIFT)<<PFN_PTE_SHIFT) + pgprot_val(pgprot));	\
-									\
-	__pte;								\
-})
-
-#define mk_pte(page, pgprot)	pfn_pte(page_to_pfn(page), (pgprot))
-
-static inline pte_t pfn_pte(unsigned long pfn, pgprot_t pgprot)
-{
-	pte_t pte;
-	pte_val(pte) = (pfn << PFN_PTE_SHIFT) | pgprot_val(pgprot);
-	return pte;
-}
-
-static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
-{ pte_val(pte) = (pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot); return pte; }
-
-/* Permanent address of a page.  On parisc we don't have highmem. */
-
-#define pte_pfn(x)		(pte_val(x) >> PFN_PTE_SHIFT)
-
-#define pte_page(pte)		(pfn_to_page(pte_pfn(pte)))
-
-#define pmd_page_vaddr(pmd)	((unsigned long) __va(pmd_address(pmd)))
-
-#define __pmd_page(pmd) ((unsigned long) __va(pmd_address(pmd)))
-#define pmd_page(pmd)	virt_to_page((void *)__pmd_page(pmd))
-
-#define pgd_index(address) ((address) >> PGDIR_SHIFT)
-
-/* to find an entry in a page-table-directory */
-#define pgd_offset(mm, address) \
-((mm)->pgd + ((address) >> PGDIR_SHIFT))
-
-/* to find an entry in a kernel page-table-directory */
-#define pgd_offset_k(address) pgd_offset(&init_mm, address)
-
-/* Find an entry in the second-level page table.. */
-
-#if PT_NLEVELS == 3
-#define pmd_offset(dir,address) \
-((pmd_t *) pgd_page_vaddr(*(dir)) + (((address)>>PMD_SHIFT) & (PTRS_PER_PMD-1)))
-#else
-#define pmd_offset(dir,addr) ((pmd_t *) dir)
-#endif
-
-/* Find an entry in the third-level page table.. */ 
-#define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE-1))
-#define pte_offset_kernel(pmd, address) \
-	((pte_t *) pmd_page_vaddr(*(pmd)) + pte_index(address))
-#define pte_offset_map(pmd, address) pte_offset_kernel(pmd, address)
-#define pte_offset_map_nested(pmd, address) pte_offset_kernel(pmd, address)
-#define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
-
-#define pte_unmap(pte)			do { } while (0)
-#define pte_unmap_nested(pte)		do { } while (0)
-
-extern void paging_init (void);
-
-/* Used for deferring calls to flush_dcache_page() */
-
-#define PG_dcache_dirty         PG_arch_1
-
-extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t);
-
-/* Encode and de-code a swap entry */
-
-#define __swp_type(x)                     ((x).val & 0x1f)
-#define __swp_offset(x)                   ( (((x).val >> 6) &  0x7) | \
-					  (((x).val >> 8) & ~0x7) )
-#define __swp_entry(type, offset)         ((swp_entry_t) { (type) | \
-					    ((offset &  0x7) << 6) | \
-					    ((offset & ~0x7) << 8) })
-#define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) })
-#define __swp_entry_to_pte(x)		((pte_t) { (x).val })
-
-static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
-{
-#ifdef CONFIG_SMP
-	if (!pte_young(*ptep))
-		return 0;
-	return test_and_clear_bit(xlate_pabit(_PAGE_ACCESSED_BIT), &pte_val(*ptep));
-#else
-	pte_t pte = *ptep;
-	if (!pte_young(pte))
-		return 0;
-	set_pte_at(vma->vm_mm, addr, ptep, pte_mkold(pte));
-	return 1;
-#endif
-}
-
-extern spinlock_t pa_dbit_lock;
-
-struct mm_struct;
-static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
-{
-	pte_t old_pte;
-	pte_t pte;
-
-	spin_lock(&pa_dbit_lock);
-	pte = old_pte = *ptep;
-	pte_val(pte) &= ~_PAGE_PRESENT;
-	pte_val(pte) |= _PAGE_FLUSH;
-	set_pte_at(mm,addr,ptep,pte);
-	spin_unlock(&pa_dbit_lock);
-
-	return old_pte;
-}
-
-static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
-{
-#ifdef CONFIG_SMP
-	unsigned long new, old;
-
-	do {
-		old = pte_val(*ptep);
-		new = pte_val(pte_wrprotect(__pte (old)));
-	} while (cmpxchg((unsigned long *) ptep, old, new) != old);
-#else
-	pte_t old_pte = *ptep;
-	set_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
-#endif
-}
-
-#define pte_same(A,B)	(pte_val(A) == pte_val(B))
-
-#endif /* !__ASSEMBLY__ */
-
-
-/* TLB page size encoding - see table 3-1 in parisc20.pdf */
-#define _PAGE_SIZE_ENCODING_4K		0
-#define _PAGE_SIZE_ENCODING_16K		1
-#define _PAGE_SIZE_ENCODING_64K		2
-#define _PAGE_SIZE_ENCODING_256K	3
-#define _PAGE_SIZE_ENCODING_1M		4
-#define _PAGE_SIZE_ENCODING_4M		5
-#define _PAGE_SIZE_ENCODING_16M		6
-#define _PAGE_SIZE_ENCODING_64M		7
-
-#if defined(CONFIG_PARISC_PAGE_SIZE_4KB)
-# define _PAGE_SIZE_ENCODING_DEFAULT _PAGE_SIZE_ENCODING_4K
-#elif defined(CONFIG_PARISC_PAGE_SIZE_16KB)
-# define _PAGE_SIZE_ENCODING_DEFAULT _PAGE_SIZE_ENCODING_16K
-#elif defined(CONFIG_PARISC_PAGE_SIZE_64KB)
-# define _PAGE_SIZE_ENCODING_DEFAULT _PAGE_SIZE_ENCODING_64K
-#endif
-
-
-#define io_remap_pfn_range(vma, vaddr, pfn, size, prot)		\
-		remap_pfn_range(vma, vaddr, pfn, size, prot)
-
-#define pgprot_noncached(prot) __pgprot(pgprot_val(prot) | _PAGE_NO_CACHE)
-
-/* We provide our own get_unmapped_area to provide cache coherency */
-
-#define HAVE_ARCH_UNMAPPED_AREA
-
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
-#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
-#define __HAVE_ARCH_PTEP_SET_WRPROTECT
-#define __HAVE_ARCH_PTE_SAME
-#include <asm-generic/pgtable.h>
-
-#endif /* _PARISC_PGTABLE_H */