You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
2.1 KiB
95 lines
2.1 KiB
/* sun3_pgalloc.h --
|
|
* reorganization around 2.3.39, routines moved from sun3_pgtable.h
|
|
*
|
|
*
|
|
* 02/27/2002 -- Modified to support "highpte" implementation in 2.5.5 (Sam)
|
|
*
|
|
* moved 1/26/2000 Sam Creasey
|
|
*/
|
|
|
|
#ifndef _SUN3_PGALLOC_H
|
|
#define _SUN3_PGALLOC_H
|
|
|
|
#include <asm/tlb.h>
|
|
|
|
/* FIXME - when we get this compiling */
|
|
/* erm, now that it's compiling, what do we do with it? */
|
|
#define _KERNPG_TABLE 0
|
|
|
|
extern const char bad_pmd_string[];
|
|
|
|
#define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); })
|
|
|
|
|
|
static inline void pte_free_kernel(pte_t * pte)
|
|
{
|
|
free_page((unsigned long) pte);
|
|
}
|
|
|
|
static inline void pte_free(struct page *page)
|
|
{
|
|
__free_page(page);
|
|
}
|
|
|
|
#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
|
|
|
|
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
|
|
unsigned long address)
|
|
{
|
|
unsigned long page = __get_free_page(GFP_KERNEL|__GFP_REPEAT);
|
|
|
|
if (!page)
|
|
return NULL;
|
|
|
|
memset((void *)page, 0, PAGE_SIZE);
|
|
return (pte_t *) (page);
|
|
}
|
|
|
|
static inline struct page *pte_alloc_one(struct mm_struct *mm,
|
|
unsigned long address)
|
|
{
|
|
struct page *page = alloc_pages(GFP_KERNEL|__GFP_REPEAT, 0);
|
|
|
|
if (page == NULL)
|
|
return NULL;
|
|
|
|
clear_highpage(page);
|
|
return page;
|
|
|
|
}
|
|
|
|
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
|
|
{
|
|
pmd_val(*pmd) = __pa((unsigned long)pte);
|
|
}
|
|
|
|
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *page)
|
|
{
|
|
pmd_val(*pmd) = __pa((unsigned long)page_address(page));
|
|
}
|
|
|
|
/*
|
|
* allocating and freeing a pmd is trivial: the 1-entry pmd is
|
|
* inside the pgd, so has no extra memory associated with it.
|
|
*/
|
|
#define pmd_free(x) do { } while (0)
|
|
#define __pmd_free_tlb(tlb, x) do { } while (0)
|
|
|
|
static inline void pgd_free(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_zeroed_page(GFP_KERNEL);
|
|
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 /* SUN3_PGALLOC_H */
|
|
|