m68k: create ColdFire MMU pgalloc code

#ifndef M68K_MCF_PGALLOC_H

#define M68K_MCF_PGALLOC_H

#include <asm/tlb.h>

#include <asm/tlbflush.h>

extern inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)

{

	free_page((unsigned long) pte);

}

extern const char bad_pmd_string[];

extern inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,

	unsigned long address)

{

	unsigned long page = __get_free_page(GFP_DMA|__GFP_REPEAT);

	if (!page)

		return NULL;

	memset((void *)page, 0, PAGE_SIZE);

	return (pte_t *) (page);

}

extern inline pmd_t *pmd_alloc_kernel(pgd_t *pgd, unsigned long address)

{

	return (pmd_t *) pgd;

}

#define pmd_alloc_one_fast(mm, address) ({ BUG(); ((pmd_t *)1); })

#define pmd_alloc_one(mm, address)      ({ BUG(); ((pmd_t *)2); })

#define pte_alloc_one_fast(mm, addr) pte_alloc_one(mm, addr)

#define pmd_populate(mm, pmd, page) (pmd_val(*pmd) = \

	(unsigned long)(page_address(page)))

#define pmd_populate_kernel(mm, pmd, pte) (pmd_val(*pmd) = (unsigned long)(pte))

#define pmd_pgtable(pmd) pmd_page(pmd)

static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t page,

				  unsigned long address)

{

	__free_page(page);

}

#define __pmd_free_tlb(tlb, pmd, address) do { } while (0)

static inline struct page *pte_alloc_one(struct mm_struct *mm,

	unsigned long address)

{

	struct page *page = alloc_pages(GFP_DMA|__GFP_REPEAT, 0);

	pte_t *pte;

	if (!page)

		return NULL;

	pte = kmap(page);

	if (pte) {

		clear_page(pte);

		__flush_page_to_ram(pte);

		flush_tlb_kernel_page(pte);

		nocache_page(pte);

	}

	kunmap(page);

	return page;

}

extern inline void pte_free(struct mm_struct *mm, struct page *page)

{

	__free_page(page);

}

/*

 * In our implementation, each pgd entry contains 1 pmd that is never allocated

 * or freed.  pgd_present is always 1, so this should never be called. -NL

 */

#define pmd_free(mm, pmd) BUG()

static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)

{

	free_page((unsigned long) pgd);

}

static inline pgd_t *pgd_alloc(struct mm_struct *mm)

{

	pgd_t *new_pgd;

	new_pgd = (pgd_t *)__get_free_page(GFP_DMA | __GFP_NOWARN);

	if (!new_pgd)

		return NULL;

	memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE);

	memset(new_pgd, 0, PAGE_OFFSET >> PGDIR_SHIFT);

	return new_pgd;

}

#define pgd_populate(mm, pmd, pte) BUG()

#endif /* M68K_MCF_PGALLOC_H */

#ifdef CONFIG_MMU

#include <asm/virtconvert.h>

#ifdef CONFIG_SUN3

#if defined(CONFIG_COLDFIRE)

#include <asm/mcf_pgalloc.h>

#elif defined(CONFIG_SUN3)

#include <asm/sun3_pgalloc.h>

#else

#include <asm/motorola_pgalloc.h>