#ifndef _M68K_PGTABLE_H
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#ifndef _M68K_PGTABLE_H
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#define _M68K_PGTABLE_H
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#define _M68K_PGTABLE_H
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extern unsigned long mm_vtop(unsigned long addr) __attribute__ ((const));
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extern unsigned long mm_vtop(unsigned long addr) __attribute__ ((const));
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extern unsigned long mm_ptov(unsigned long addr) __attribute__ ((const));
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extern unsigned long mm_ptov(unsigned long addr) __attribute__ ((const));
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#define VTOP(addr) (mm_vtop((unsigned long)(addr)))
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#define VTOP(addr) (mm_vtop((unsigned long)(addr)))
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#define PTOV(addr) (mm_ptov((unsigned long)(addr)))
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#define PTOV(addr) (mm_ptov((unsigned long)(addr)))
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#ifndef NO_MM
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#ifndef NO_MM
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#include <asm/setup.h>
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#include <asm/setup.h>
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#ifndef __ASSEMBLY__
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#ifndef __ASSEMBLY__
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#include <linux/config.h>
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#include <linux/config.h>
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/*
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/*
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* This file contains the functions and defines necessary to modify and use
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* This file contains the functions and defines necessary to modify and use
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* the m68k page table tree.
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* the m68k page table tree.
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*/
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*/
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/*
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/*
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* flush all atc entries (user-space entries only for the 680[46]0).
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* flush all atc entries (user-space entries only for the 680[46]0).
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*/
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*/
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static inline void __flush_tlb(void)
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static inline void __flush_tlb(void)
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{
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{
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if (CPU_IS_040_OR_060)
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if (CPU_IS_040_OR_060)
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__asm__ __volatile__(".word 0xf510\n"::); /* pflushan */
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__asm__ __volatile__(".word 0xf510\n"::); /* pflushan */
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else
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else
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__asm__ __volatile__("pflusha\n"::);
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__asm__ __volatile__("pflusha\n"::);
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}
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}
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static inline void __flush_tlb_one(unsigned long addr)
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static inline void __flush_tlb_one(unsigned long addr)
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{
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{
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if (CPU_IS_040_OR_060) {
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if (CPU_IS_040_OR_060) {
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register unsigned long a0 __asm__ ("a0") = addr;
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register unsigned long a0 __asm__ ("a0") = addr;
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__asm__ __volatile__(".word 0xf508" /* pflush (%a0) */
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__asm__ __volatile__(".word 0xf508" /* pflush (%a0) */
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: : "a" (a0));
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: : "a" (a0));
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} else
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} else
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__asm__ __volatile__("pflush #0,#0,(%0)" : : "a" (addr));
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__asm__ __volatile__("pflush #0,#0,(%0)" : : "a" (addr));
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}
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}
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#define flush_tlb() __flush_tlb()
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#define flush_tlb() __flush_tlb()
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/*
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/*
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* flush all atc entries (both kernel and user-space entries).
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* flush all atc entries (both kernel and user-space entries).
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*/
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*/
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static inline void flush_tlb_all(void)
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static inline void flush_tlb_all(void)
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{
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{
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if (CPU_IS_040_OR_060)
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if (CPU_IS_040_OR_060)
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__asm__ __volatile__(".word 0xf518\n"::); /* pflusha */
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__asm__ __volatile__(".word 0xf518\n"::); /* pflusha */
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else
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else
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__asm__ __volatile__("pflusha\n"::);
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__asm__ __volatile__("pflusha\n"::);
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}
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}
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static inline void flush_tlb_mm(struct mm_struct *mm)
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static inline void flush_tlb_mm(struct mm_struct *mm)
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{
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{
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if (mm == current->mm)
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if (mm == current->mm)
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__flush_tlb();
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__flush_tlb();
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}
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}
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static inline void flush_tlb_page(struct vm_area_struct *vma,
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static inline void flush_tlb_page(struct vm_area_struct *vma,
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unsigned long addr)
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unsigned long addr)
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{
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{
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if (vma->vm_mm == current->mm)
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if (vma->vm_mm == current->mm)
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__flush_tlb_one(addr);
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__flush_tlb_one(addr);
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}
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}
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static inline void flush_tlb_range(struct mm_struct *mm,
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static inline void flush_tlb_range(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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unsigned long start, unsigned long end)
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{
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{
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if (mm == current->mm)
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if (mm == current->mm)
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__flush_tlb();
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__flush_tlb();
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}
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}
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/* Certain architectures need to do special things when pte's
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/* Certain architectures need to do special things when pte's
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* within a page table are directly modified. Thus, the following
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* within a page table are directly modified. Thus, the following
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* hook is made available.
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* hook is made available.
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*/
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*/
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#define set_pte(pteptr, pteval) do{ \
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#define set_pte(pteptr, pteval) do{ \
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((*(pteptr)) = (pteval)); \
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((*(pteptr)) = (pteval)); \
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if (CPU_IS_060) \
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if (CPU_IS_060) \
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__asm__ __volatile__(".word 0xf518\n"::); /* pflusha */ \
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__asm__ __volatile__(".word 0xf518\n"::); /* pflusha */ \
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} while(0)
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} while(0)
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/* PMD_SHIFT determines the size of the area a second-level page table can map */
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/* PMD_SHIFT determines the size of the area a second-level page table can map */
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#define PMD_SHIFT 22
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#define PMD_SHIFT 22
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#define PMD_SIZE (1UL << PMD_SHIFT)
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#define PMD_SIZE (1UL << PMD_SHIFT)
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#define PMD_MASK (~(PMD_SIZE-1))
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#define PMD_MASK (~(PMD_SIZE-1))
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/* PGDIR_SHIFT determines what a third-level page table entry can map */
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/* PGDIR_SHIFT determines what a third-level page table entry can map */
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#define PGDIR_SHIFT 25
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#define PGDIR_SHIFT 25
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#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
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#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
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#define PGDIR_MASK (~(PGDIR_SIZE-1))
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#define PGDIR_MASK (~(PGDIR_SIZE-1))
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/*
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/*
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* entries per page directory level: the m68k is configured as three-level,
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* entries per page directory level: the m68k is configured as three-level,
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* so we do have PMD level physically.
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* so we do have PMD level physically.
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*/
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*/
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#define PTRS_PER_PTE 1024
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#define PTRS_PER_PTE 1024
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#define PTRS_PER_PMD 8
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#define PTRS_PER_PMD 8
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#define PTRS_PER_PGD 128
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#define PTRS_PER_PGD 128
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/* the no. of pointers that fit on a page: this will go away */
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/* the no. of pointers that fit on a page: this will go away */
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#define PTRS_PER_PAGE (PAGE_SIZE/sizeof(void*))
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#define PTRS_PER_PAGE (PAGE_SIZE/sizeof(void*))
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typedef pgd_t pgd_table[PTRS_PER_PGD];
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typedef pgd_t pgd_table[PTRS_PER_PGD];
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typedef pmd_t pmd_table[PTRS_PER_PMD];
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typedef pmd_t pmd_table[PTRS_PER_PMD];
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typedef pte_t pte_table[PTRS_PER_PTE];
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typedef pte_t pte_table[PTRS_PER_PTE];
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#define PGD_TABLES_PER_PAGE (PAGE_SIZE/sizeof(pgd_table))
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#define PGD_TABLES_PER_PAGE (PAGE_SIZE/sizeof(pgd_table))
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#define PMD_TABLES_PER_PAGE (PAGE_SIZE/sizeof(pmd_table))
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#define PMD_TABLES_PER_PAGE (PAGE_SIZE/sizeof(pmd_table))
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#define PTE_TABLES_PER_PAGE (PAGE_SIZE/sizeof(pte_table))
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#define PTE_TABLES_PER_PAGE (PAGE_SIZE/sizeof(pte_table))
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typedef pgd_table pgd_tablepage[PGD_TABLES_PER_PAGE];
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typedef pgd_table pgd_tablepage[PGD_TABLES_PER_PAGE];
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typedef pmd_table pmd_tablepage[PMD_TABLES_PER_PAGE];
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typedef pmd_table pmd_tablepage[PMD_TABLES_PER_PAGE];
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typedef pte_table pte_tablepage[PTE_TABLES_PER_PAGE];
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typedef pte_table pte_tablepage[PTE_TABLES_PER_PAGE];
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/* Just any arbitrary offset to the start of the vmalloc VM area: the
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/* Just any arbitrary offset to the start of the vmalloc VM area: the
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* current 8MB value just means that there will be a 8MB "hole" after the
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* current 8MB value just means that there will be a 8MB "hole" after the
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* physical memory until the kernel virtual memory starts. That means that
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* physical memory until the kernel virtual memory starts. That means that
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* any out-of-bounds memory accesses will hopefully be caught.
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* any out-of-bounds memory accesses will hopefully be caught.
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* The vmalloc() routines leaves a hole of 4kB between each vmalloced
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* The vmalloc() routines leaves a hole of 4kB between each vmalloced
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* area for the same reason. ;)
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* area for the same reason. ;)
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*/
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*/
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#define VMALLOC_OFFSET (8*1024*1024)
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#define VMALLOC_OFFSET (8*1024*1024)
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#define VMALLOC_START ((high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))
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#define VMALLOC_START ((high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))
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#define VMALLOC_VMADDR(x) ((unsigned long)(x))
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#define VMALLOC_VMADDR(x) ((unsigned long)(x))
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#endif /* __ASSEMBLY__ */
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#endif /* __ASSEMBLY__ */
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/*
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/*
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* Definitions for MMU descriptors
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* Definitions for MMU descriptors
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*/
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*/
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#define _PAGE_PRESENT 0x001
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#define _PAGE_PRESENT 0x001
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#define _PAGE_SHORT 0x002
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#define _PAGE_SHORT 0x002
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#define _PAGE_RONLY 0x004
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#define _PAGE_RONLY 0x004
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#define _PAGE_ACCESSED 0x008
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#define _PAGE_ACCESSED 0x008
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#define _PAGE_DIRTY 0x010
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#define _PAGE_DIRTY 0x010
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#define _PAGE_GLOBAL040 0x400 /* 68040 global bit, used for kva descs */
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#define _PAGE_GLOBAL040 0x400 /* 68040 global bit, used for kva descs */
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#define _PAGE_COW 0x800 /* implemented in software */
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#define _PAGE_COW 0x800 /* implemented in software */
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#define _PAGE_NOCACHE030 0x040 /* 68030 no-cache mode */
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#define _PAGE_NOCACHE030 0x040 /* 68030 no-cache mode */
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#define _PAGE_NOCACHE 0x060 /* 68040 cache mode, non-serialized */
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#define _PAGE_NOCACHE 0x060 /* 68040 cache mode, non-serialized */
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#define _PAGE_NOCACHE_S 0x040 /* 68040 no-cache mode, serialized */
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#define _PAGE_NOCACHE_S 0x040 /* 68040 no-cache mode, serialized */
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#define _PAGE_CACHE040 0x020 /* 68040 cache mode, cachable, copyback */
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#define _PAGE_CACHE040 0x020 /* 68040 cache mode, cachable, copyback */
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#define _PAGE_CACHE040W 0x000 /* 68040 cache mode, cachable, write-through */
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#define _PAGE_CACHE040W 0x000 /* 68040 cache mode, cachable, write-through */
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#define _DESCTYPE_MASK 0x003
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#define _DESCTYPE_MASK 0x003
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#define _CACHEMASK040 (~0x060)
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#define _CACHEMASK040 (~0x060)
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#define _TABLE_MASK (0xfffffe00)
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#define _TABLE_MASK (0xfffffe00)
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#define _PAGE_TABLE (_PAGE_SHORT)
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#define _PAGE_TABLE (_PAGE_SHORT)
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#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_NOCACHE)
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#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_NOCACHE)
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#ifndef __ASSEMBLY__
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#ifndef __ASSEMBLY__
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/* This is the cache mode to be used for pages containing page descriptors for
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/* This is the cache mode to be used for pages containing page descriptors for
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* processors >= '040. It is in pte_mknocache(), and the variable is defined
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* processors >= '040. It is in pte_mknocache(), and the variable is defined
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* and initialized in head.S */
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* and initialized in head.S */
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extern int m68k_pgtable_cachemode;
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extern int m68k_pgtable_cachemode;
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#if defined(CONFIG_M68040_OR_M68060_ONLY)
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#if defined(CONFIG_M68040_OR_M68060_ONLY)
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#define mm_cachebits _PAGE_CACHE040
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#define mm_cachebits _PAGE_CACHE040
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#elif defined(CONFIG_M68020_OR_M68030_ONLY)
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#elif defined(CONFIG_M68020_OR_M68030_ONLY)
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#define mm_cachebits 0
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#define mm_cachebits 0
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#else
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#else
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extern unsigned long mm_cachebits;
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extern unsigned long mm_cachebits;
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#endif
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#endif
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#define PAGE_NONE __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED | mm_cachebits)
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#define PAGE_NONE __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED | mm_cachebits)
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#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | mm_cachebits)
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#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | mm_cachebits)
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#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED | mm_cachebits)
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#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED | mm_cachebits)
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#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED | mm_cachebits)
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#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED | mm_cachebits)
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#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_DIRTY | _PAGE_ACCESSED | mm_cachebits)
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#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_DIRTY | _PAGE_ACCESSED | mm_cachebits)
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/* Alternate definitions that are compile time constants, for
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/* Alternate definitions that are compile time constants, for
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initializing protection_map. The cachebits are fixed later. */
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initializing protection_map. The cachebits are fixed later. */
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#define PAGE_NONE_C __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED)
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#define PAGE_NONE_C __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED)
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#define PAGE_SHARED_C __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED)
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#define PAGE_SHARED_C __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED)
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#define PAGE_COPY_C __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED)
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#define PAGE_COPY_C __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED)
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#define PAGE_READONLY_C __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED)
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#define PAGE_READONLY_C __pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED)
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/*
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/*
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* The m68k can't do page protection for execute, and considers that the same are read.
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* The m68k can't do page protection for execute, and considers that the same are read.
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* Also, write permissions imply read permissions. This is the closest we can get..
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* Also, write permissions imply read permissions. This is the closest we can get..
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*/
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*/
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#define __P000 PAGE_NONE_C
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#define __P000 PAGE_NONE_C
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#define __P001 PAGE_READONLY_C
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#define __P001 PAGE_READONLY_C
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#define __P010 PAGE_COPY_C
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#define __P010 PAGE_COPY_C
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#define __P011 PAGE_COPY_C
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#define __P011 PAGE_COPY_C
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#define __P100 PAGE_READONLY_C
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#define __P100 PAGE_READONLY_C
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#define __P101 PAGE_READONLY_C
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#define __P101 PAGE_READONLY_C
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#define __P110 PAGE_COPY_C
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#define __P110 PAGE_COPY_C
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#define __P111 PAGE_COPY_C
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#define __P111 PAGE_COPY_C
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#define __S000 PAGE_NONE_C
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#define __S000 PAGE_NONE_C
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#define __S001 PAGE_READONLY_C
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#define __S001 PAGE_READONLY_C
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#define __S010 PAGE_SHARED_C
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#define __S010 PAGE_SHARED_C
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#define __S011 PAGE_SHARED_C
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#define __S011 PAGE_SHARED_C
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#define __S100 PAGE_READONLY_C
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#define __S100 PAGE_READONLY_C
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#define __S101 PAGE_READONLY_C
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#define __S101 PAGE_READONLY_C
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#define __S110 PAGE_SHARED_C
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#define __S110 PAGE_SHARED_C
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#define __S111 PAGE_SHARED_C
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#define __S111 PAGE_SHARED_C
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/* zero page used for uninitialized stuff */
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/* zero page used for uninitialized stuff */
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extern unsigned long empty_zero_page;
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extern unsigned long empty_zero_page;
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/*
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/*
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* BAD_PAGETABLE is used when we need a bogus page-table, while
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* BAD_PAGETABLE is used when we need a bogus page-table, while
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* BAD_PAGE is used for a bogus page.
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* BAD_PAGE is used for a bogus page.
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*
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*
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* ZERO_PAGE is a global shared page that is always zero: used
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* ZERO_PAGE is a global shared page that is always zero: used
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* for zero-mapped memory areas etc..
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* for zero-mapped memory areas etc..
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*/
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*/
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extern pte_t __bad_page(void);
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extern pte_t __bad_page(void);
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extern pte_t * __bad_pagetable(void);
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extern pte_t * __bad_pagetable(void);
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#define BAD_PAGETABLE __bad_pagetable()
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#define BAD_PAGETABLE __bad_pagetable()
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#define BAD_PAGE __bad_page()
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#define BAD_PAGE __bad_page()
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#define ZERO_PAGE empty_zero_page
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#define ZERO_PAGE empty_zero_page
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/* number of bits that fit into a memory pointer */
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/* number of bits that fit into a memory pointer */
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#define BITS_PER_PTR (8*sizeof(unsigned long))
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#define BITS_PER_PTR (8*sizeof(unsigned long))
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/* to align the pointer to a pointer address */
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/* to align the pointer to a pointer address */
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#define PTR_MASK (~(sizeof(void*)-1))
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#define PTR_MASK (~(sizeof(void*)-1))
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/* sizeof(void*)==1<<SIZEOF_PTR_LOG2 */
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/* sizeof(void*)==1<<SIZEOF_PTR_LOG2 */
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/* 64-bit machines, beware! SRB. */
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/* 64-bit machines, beware! SRB. */
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#define SIZEOF_PTR_LOG2 2
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#define SIZEOF_PTR_LOG2 2
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/* to find an entry in a page-table */
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/* to find an entry in a page-table */
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#define PAGE_PTR(address) \
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#define PAGE_PTR(address) \
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((unsigned long)(address)>>(PAGE_SHIFT-SIZEOF_PTR_LOG2)&PTR_MASK&~PAGE_MASK)
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((unsigned long)(address)>>(PAGE_SHIFT-SIZEOF_PTR_LOG2)&PTR_MASK&~PAGE_MASK)
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extern unsigned long high_memory;
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extern unsigned long high_memory;
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/* For virtual address to physical address conversion */
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/* For virtual address to physical address conversion */
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extern unsigned long mm_vtop(unsigned long addr) __attribute__ ((const));
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extern unsigned long mm_vtop(unsigned long addr) __attribute__ ((const));
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extern unsigned long mm_ptov(unsigned long addr) __attribute__ ((const));
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extern unsigned long mm_ptov(unsigned long addr) __attribute__ ((const));
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#define VTOP(addr) (mm_vtop((unsigned long)(addr)))
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#define VTOP(addr) (mm_vtop((unsigned long)(addr)))
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#define PTOV(addr) (mm_ptov((unsigned long)(addr)))
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#define PTOV(addr) (mm_ptov((unsigned long)(addr)))
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/*
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/*
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* Conversion functions: convert a page and protection to a page entry,
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* Conversion functions: convert a page and protection to a page entry,
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* and a page entry and page directory to the page they refer to.
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* and a page entry and page directory to the page they refer to.
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*/
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*/
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extern inline pte_t mk_pte(unsigned long page, pgprot_t pgprot)
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extern inline pte_t mk_pte(unsigned long page, pgprot_t pgprot)
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{ pte_t pte; pte_val(pte) = VTOP(page) | pgprot_val(pgprot); return pte; }
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{ pte_t pte; pte_val(pte) = VTOP(page) | pgprot_val(pgprot); return pte; }
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extern inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
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extern inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
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{ pte_val(pte) = (pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot); return pte; }
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{ pte_val(pte) = (pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot); return pte; }
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extern inline void pmd_set(pmd_t * pmdp, pte_t * ptep)
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extern inline void pmd_set(pmd_t * pmdp, pte_t * ptep)
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{
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{
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int i;
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int i;
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ptep = (pte_t *) VTOP(ptep);
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ptep = (pte_t *) VTOP(ptep);
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for (i = 0; i < 16; i++, ptep += PTRS_PER_PTE/16)
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for (i = 0; i < 16; i++, ptep += PTRS_PER_PTE/16)
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pmdp->pmd[i] = _PAGE_TABLE | _PAGE_ACCESSED | (unsigned long)ptep;
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pmdp->pmd[i] = _PAGE_TABLE | _PAGE_ACCESSED | (unsigned long)ptep;
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}
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}
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/* early termination version of the above */
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/* early termination version of the above */
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extern inline void pmd_set_et(pmd_t * pmdp, pte_t * ptep)
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extern inline void pmd_set_et(pmd_t * pmdp, pte_t * ptep)
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{
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{
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int i;
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int i;
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|
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ptep = (pte_t *) VTOP(ptep);
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ptep = (pte_t *) VTOP(ptep);
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for (i = 0; i < 16; i++, ptep += PTRS_PER_PTE/16)
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for (i = 0; i < 16; i++, ptep += PTRS_PER_PTE/16)
|
pmdp->pmd[i] = _PAGE_PRESENT | _PAGE_ACCESSED | (unsigned long)ptep;
|
pmdp->pmd[i] = _PAGE_PRESENT | _PAGE_ACCESSED | (unsigned long)ptep;
|
}
|
}
|
|
|
extern inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
|
extern inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
|
{ pgd_val(*pgdp) = _PAGE_TABLE | _PAGE_ACCESSED | VTOP(pmdp); }
|
{ pgd_val(*pgdp) = _PAGE_TABLE | _PAGE_ACCESSED | VTOP(pmdp); }
|
|
|
extern inline unsigned long pte_page(pte_t pte)
|
extern inline unsigned long pte_page(pte_t pte)
|
{ return PTOV(pte_val(pte) & PAGE_MASK); }
|
{ return PTOV(pte_val(pte) & PAGE_MASK); }
|
|
|
extern inline unsigned long pmd_page2(pmd_t *pmd)
|
extern inline unsigned long pmd_page2(pmd_t *pmd)
|
{ return PTOV(pmd_val(*pmd) & _TABLE_MASK); }
|
{ return PTOV(pmd_val(*pmd) & _TABLE_MASK); }
|
#define pmd_page(pmd) pmd_page2(&(pmd))
|
#define pmd_page(pmd) pmd_page2(&(pmd))
|
|
|
extern inline unsigned long pgd_page(pgd_t pgd)
|
extern inline unsigned long pgd_page(pgd_t pgd)
|
{ return PTOV(pgd_val(pgd) & _TABLE_MASK); }
|
{ return PTOV(pgd_val(pgd) & _TABLE_MASK); }
|
|
|
extern inline int pte_none(pte_t pte) { return !pte_val(pte); }
|
extern inline int pte_none(pte_t pte) { return !pte_val(pte); }
|
extern inline int pte_present(pte_t pte) { return pte_val(pte) & _PAGE_PRESENT; }
|
extern inline int pte_present(pte_t pte) { return pte_val(pte) & _PAGE_PRESENT; }
|
extern inline void pte_clear(pte_t *ptep) { pte_val(*ptep) = 0; }
|
extern inline void pte_clear(pte_t *ptep) { pte_val(*ptep) = 0; }
|
|
|
extern inline int pmd_none2(pmd_t *pmd) { return !pmd_val(*pmd); }
|
extern inline int pmd_none2(pmd_t *pmd) { return !pmd_val(*pmd); }
|
#define pmd_none(pmd) pmd_none2(&(pmd))
|
#define pmd_none(pmd) pmd_none2(&(pmd))
|
extern inline int pmd_bad2(pmd_t *pmd) { return (pmd_val(*pmd) & _DESCTYPE_MASK) != _PAGE_TABLE || pmd_page(*pmd) > high_memory; }
|
extern inline int pmd_bad2(pmd_t *pmd) { return (pmd_val(*pmd) & _DESCTYPE_MASK) != _PAGE_TABLE || pmd_page(*pmd) > high_memory; }
|
#define pmd_bad(pmd) pmd_bad2(&(pmd))
|
#define pmd_bad(pmd) pmd_bad2(&(pmd))
|
extern inline int pmd_present2(pmd_t *pmd) { return pmd_val(*pmd) & _PAGE_TABLE; }
|
extern inline int pmd_present2(pmd_t *pmd) { return pmd_val(*pmd) & _PAGE_TABLE; }
|
#define pmd_present(pmd) pmd_present2(&(pmd))
|
#define pmd_present(pmd) pmd_present2(&(pmd))
|
extern inline void pmd_clear(pmd_t * pmdp)
|
extern inline void pmd_clear(pmd_t * pmdp)
|
{
|
{
|
short i;
|
short i;
|
|
|
for (i = 15; i >= 0; i--)
|
for (i = 15; i >= 0; i--)
|
pmdp->pmd[i] = 0;
|
pmdp->pmd[i] = 0;
|
}
|
}
|
|
|
extern inline int pgd_none(pgd_t pgd) { return !pgd_val(pgd); }
|
extern inline int pgd_none(pgd_t pgd) { return !pgd_val(pgd); }
|
extern inline int pgd_bad(pgd_t pgd) { return (pgd_val(pgd) & _DESCTYPE_MASK) != _PAGE_TABLE || pgd_page(pgd) > high_memory; }
|
extern inline int pgd_bad(pgd_t pgd) { return (pgd_val(pgd) & _DESCTYPE_MASK) != _PAGE_TABLE || pgd_page(pgd) > high_memory; }
|
extern inline int pgd_present(pgd_t pgd) { return pgd_val(pgd) & _PAGE_TABLE; }
|
extern inline int pgd_present(pgd_t pgd) { return pgd_val(pgd) & _PAGE_TABLE; }
|
|
|
extern inline void pgd_clear(pgd_t * pgdp) { pgd_val(*pgdp) = 0; }
|
extern inline void pgd_clear(pgd_t * pgdp) { pgd_val(*pgdp) = 0; }
|
|
|
/*
|
/*
|
* The following only work if pte_present() is true.
|
* The following only work if pte_present() is true.
|
* Undefined behaviour if not..
|
* Undefined behaviour if not..
|
*/
|
*/
|
extern inline int pte_read(pte_t pte) { return 1; }
|
extern inline int pte_read(pte_t pte) { return 1; }
|
extern inline int pte_write(pte_t pte) { return !(pte_val(pte) & _PAGE_RONLY); }
|
extern inline int pte_write(pte_t pte) { return !(pte_val(pte) & _PAGE_RONLY); }
|
extern inline int pte_exec(pte_t pte) { return 1; }
|
extern inline int pte_exec(pte_t pte) { return 1; }
|
extern inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
|
extern inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
|
extern inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
|
extern inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
|
|
|
extern inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) |= _PAGE_RONLY; return pte; }
|
extern inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) |= _PAGE_RONLY; return pte; }
|
extern inline pte_t pte_rdprotect(pte_t pte) { return pte; }
|
extern inline pte_t pte_rdprotect(pte_t pte) { return pte; }
|
extern inline pte_t pte_exprotect(pte_t pte) { return pte; }
|
extern inline pte_t pte_exprotect(pte_t pte) { return pte; }
|
extern inline pte_t pte_mkclean(pte_t pte) { pte_val(pte) &= ~_PAGE_DIRTY; return pte; }
|
extern inline pte_t pte_mkclean(pte_t pte) { pte_val(pte) &= ~_PAGE_DIRTY; return pte; }
|
extern inline pte_t pte_mkold(pte_t pte) { pte_val(pte) &= ~_PAGE_ACCESSED; return pte; }
|
extern inline pte_t pte_mkold(pte_t pte) { pte_val(pte) &= ~_PAGE_ACCESSED; return pte; }
|
extern inline pte_t pte_mkwrite(pte_t pte) { pte_val(pte) &= ~_PAGE_RONLY; return pte; }
|
extern inline pte_t pte_mkwrite(pte_t pte) { pte_val(pte) &= ~_PAGE_RONLY; return pte; }
|
extern inline pte_t pte_mkread(pte_t pte) { return pte; }
|
extern inline pte_t pte_mkread(pte_t pte) { return pte; }
|
extern inline pte_t pte_mkexec(pte_t pte) { return pte; }
|
extern inline pte_t pte_mkexec(pte_t pte) { return pte; }
|
extern inline pte_t pte_mkdirty(pte_t pte) { pte_val(pte) |= _PAGE_DIRTY; return pte; }
|
extern inline pte_t pte_mkdirty(pte_t pte) { pte_val(pte) |= _PAGE_DIRTY; return pte; }
|
extern inline pte_t pte_mkyoung(pte_t pte) { pte_val(pte) |= _PAGE_ACCESSED; return pte; }
|
extern inline pte_t pte_mkyoung(pte_t pte) { pte_val(pte) |= _PAGE_ACCESSED; return pte; }
|
extern inline pte_t pte_mknocache(pte_t pte)
|
extern inline pte_t pte_mknocache(pte_t pte)
|
{
|
{
|
pte_val(pte) = (pte_val(pte) & _CACHEMASK040) | m68k_pgtable_cachemode;
|
pte_val(pte) = (pte_val(pte) & _CACHEMASK040) | m68k_pgtable_cachemode;
|
return pte;
|
return pte;
|
}
|
}
|
extern inline pte_t pte_mkcache(pte_t pte) { pte_val(pte) = (pte_val(pte) & _CACHEMASK040) | _PAGE_CACHE040; return pte; }
|
extern inline pte_t pte_mkcache(pte_t pte) { pte_val(pte) = (pte_val(pte) & _CACHEMASK040) | _PAGE_CACHE040; return pte; }
|
|
|
/* to set the page-dir */
|
/* to set the page-dir */
|
extern inline void SET_PAGE_DIR(struct task_struct * tsk, pgd_t * pgdir)
|
extern inline void SET_PAGE_DIR(struct task_struct * tsk, pgd_t * pgdir)
|
{
|
{
|
tsk->tss.crp[0] = 0x80000000 | _PAGE_TABLE;
|
tsk->tss.crp[0] = 0x80000000 | _PAGE_TABLE;
|
tsk->tss.crp[1] = VTOP(pgdir);
|
tsk->tss.crp[1] = VTOP(pgdir);
|
if (tsk == current) {
|
if (tsk == current) {
|
if (CPU_IS_040_OR_060)
|
if (CPU_IS_040_OR_060)
|
__asm__ __volatile__ ("movel %0@,%/d0\n\t"
|
__asm__ __volatile__ ("movel %0@,%/d0\n\t"
|
".long 0x4e7b0806\n\t"
|
".long 0x4e7b0806\n\t"
|
/* movec d0,urp */
|
/* movec d0,urp */
|
: : "a" (&tsk->tss.crp[1])
|
: : "a" (&tsk->tss.crp[1])
|
: "d0");
|
: "d0");
|
else
|
else
|
__asm__ __volatile__ ("movec %/cacr,%/d0\n\t"
|
__asm__ __volatile__ ("movec %/cacr,%/d0\n\t"
|
"oriw #0x0808,%/d0\n\t"
|
"oriw #0x0808,%/d0\n\t"
|
"movec %/d0,%/cacr\n\t"
|
"movec %/d0,%/cacr\n\t"
|
"pmove %0@,%/crp\n\t"
|
"pmove %0@,%/crp\n\t"
|
: : "a" (&tsk->tss.crp[0])
|
: : "a" (&tsk->tss.crp[0])
|
: "d0");
|
: "d0");
|
}
|
}
|
}
|
}
|
|
|
#define PAGE_DIR_OFFSET(tsk,address) pgd_offset((tsk),(address))
|
#define PAGE_DIR_OFFSET(tsk,address) pgd_offset((tsk),(address))
|
|
|
/* to find an entry in a page-table-directory */
|
/* to find an entry in a page-table-directory */
|
extern inline pgd_t * pgd_offset(struct mm_struct * mm, unsigned long address)
|
extern inline pgd_t * pgd_offset(struct mm_struct * mm, unsigned long address)
|
{
|
{
|
return mm->pgd + (address >> PGDIR_SHIFT);
|
return mm->pgd + (address >> PGDIR_SHIFT);
|
}
|
}
|
|
|
extern pgd_t swapper_pg_dir[128];
|
extern pgd_t swapper_pg_dir[128];
|
extern pgd_t kernel_pg_dir[128];
|
extern pgd_t kernel_pg_dir[128];
|
|
|
extern inline pgd_t * pgd_offset_k(unsigned long address)
|
extern inline pgd_t * pgd_offset_k(unsigned long address)
|
{
|
{
|
return kernel_pg_dir + (address >> PGDIR_SHIFT);
|
return kernel_pg_dir + (address >> PGDIR_SHIFT);
|
}
|
}
|
|
|
|
|
/* Find an entry in the second-level page table.. */
|
/* Find an entry in the second-level page table.. */
|
extern inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
|
extern inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
|
{
|
{
|
return (pmd_t *) pgd_page(*dir) + ((address >> PMD_SHIFT) & (PTRS_PER_PMD-1));
|
return (pmd_t *) pgd_page(*dir) + ((address >> PMD_SHIFT) & (PTRS_PER_PMD-1));
|
}
|
}
|
|
|
/* Find an entry in the third-level page table.. */
|
/* Find an entry in the third-level page table.. */
|
extern inline pte_t * pte_offset(pmd_t * pmdp, unsigned long address)
|
extern inline pte_t * pte_offset(pmd_t * pmdp, unsigned long address)
|
{
|
{
|
return (pte_t *) pmd_page(*pmdp) + ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1));
|
return (pte_t *) pmd_page(*pmdp) + ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1));
|
}
|
}
|
|
|
/*
|
/*
|
* Allocate and free page tables. The xxx_kernel() versions are
|
* Allocate and free page tables. The xxx_kernel() versions are
|
* used to allocate a kernel page table - this turns on ASN bits
|
* used to allocate a kernel page table - this turns on ASN bits
|
* if any.
|
* if any.
|
*/
|
*/
|
|
|
extern inline void nocache_page (unsigned long vaddr)
|
extern inline void nocache_page (unsigned long vaddr)
|
{
|
{
|
if (CPU_IS_040_OR_060) {
|
if (CPU_IS_040_OR_060) {
|
pgd_t *dir;
|
pgd_t *dir;
|
pmd_t *pmdp;
|
pmd_t *pmdp;
|
pte_t *ptep;
|
pte_t *ptep;
|
|
|
if(CPU_IS_060)
|
if(CPU_IS_060)
|
__asm__ __volatile__ ("movel %0,%/a0\n\t"
|
__asm__ __volatile__ ("movel %0,%/a0\n\t"
|
".word 0xf470"
|
".word 0xf470"
|
: : "g" (VTOP(vaddr))
|
: : "g" (VTOP(vaddr))
|
: "a0");
|
: "a0");
|
|
|
dir = pgd_offset_k(vaddr);
|
dir = pgd_offset_k(vaddr);
|
pmdp = pmd_offset(dir,vaddr);
|
pmdp = pmd_offset(dir,vaddr);
|
ptep = pte_offset(pmdp,vaddr);
|
ptep = pte_offset(pmdp,vaddr);
|
*ptep = pte_mknocache(*ptep);
|
*ptep = pte_mknocache(*ptep);
|
}
|
}
|
}
|
}
|
|
|
static inline void cache_page (unsigned long vaddr)
|
static inline void cache_page (unsigned long vaddr)
|
{
|
{
|
if (CPU_IS_040_OR_060) {
|
if (CPU_IS_040_OR_060) {
|
pgd_t *dir;
|
pgd_t *dir;
|
pmd_t *pmdp;
|
pmd_t *pmdp;
|
pte_t *ptep;
|
pte_t *ptep;
|
|
|
dir = pgd_offset_k(vaddr);
|
dir = pgd_offset_k(vaddr);
|
pmdp = pmd_offset(dir,vaddr);
|
pmdp = pmd_offset(dir,vaddr);
|
ptep = pte_offset(pmdp,vaddr);
|
ptep = pte_offset(pmdp,vaddr);
|
*ptep = pte_mkcache(*ptep);
|
*ptep = pte_mkcache(*ptep);
|
}
|
}
|
}
|
}
|
|
|
|
|
extern const char PgtabStr_bad_pmd[];
|
extern const char PgtabStr_bad_pmd[];
|
extern const char PgtabStr_bad_pgd[];
|
extern const char PgtabStr_bad_pgd[];
|
extern const char PgtabStr_bad_pmdk[];
|
extern const char PgtabStr_bad_pmdk[];
|
extern const char PgtabStr_bad_pgdk[];
|
extern const char PgtabStr_bad_pgdk[];
|
|
|
extern inline void pte_free(pte_t * pte)
|
extern inline void pte_free(pte_t * pte)
|
{
|
{
|
cache_page((unsigned long)pte);
|
cache_page((unsigned long)pte);
|
free_page((unsigned long) pte);
|
free_page((unsigned long) pte);
|
}
|
}
|
|
|
extern inline pte_t * pte_alloc(pmd_t * pmd, unsigned long address)
|
extern inline pte_t * pte_alloc(pmd_t * pmd, unsigned long address)
|
{
|
{
|
address = (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
|
address = (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
|
if (pmd_none(*pmd)) {
|
if (pmd_none(*pmd)) {
|
pte_t * page = (pte_t *)get_free_page(GFP_KERNEL);
|
pte_t * page = (pte_t *)get_free_page(GFP_KERNEL);
|
if (pmd_none(*pmd)) {
|
if (pmd_none(*pmd)) {
|
if (page) {
|
if (page) {
|
nocache_page((unsigned long)page);
|
nocache_page((unsigned long)page);
|
pmd_set(pmd,page);
|
pmd_set(pmd,page);
|
return page + address;
|
return page + address;
|
}
|
}
|
pmd_set(pmd, BAD_PAGETABLE);
|
pmd_set(pmd, BAD_PAGETABLE);
|
return NULL;
|
return NULL;
|
}
|
}
|
free_page((unsigned long)page);
|
free_page((unsigned long)page);
|
}
|
}
|
if (pmd_bad(*pmd)) {
|
if (pmd_bad(*pmd)) {
|
printk(PgtabStr_bad_pmd, pmd_val(*pmd));
|
printk(PgtabStr_bad_pmd, pmd_val(*pmd));
|
pmd_set(pmd, BAD_PAGETABLE);
|
pmd_set(pmd, BAD_PAGETABLE);
|
return NULL;
|
return NULL;
|
}
|
}
|
return (pte_t *) pmd_page(*pmd) + address;
|
return (pte_t *) pmd_page(*pmd) + address;
|
}
|
}
|
|
|
extern pmd_t *get_pointer_table (void);
|
extern pmd_t *get_pointer_table (void);
|
extern void free_pointer_table (pmd_t *);
|
extern void free_pointer_table (pmd_t *);
|
extern pmd_t *get_kpointer_table (void);
|
extern pmd_t *get_kpointer_table (void);
|
extern void free_kpointer_table (pmd_t *);
|
extern void free_kpointer_table (pmd_t *);
|
|
|
extern inline void pmd_free(pmd_t * pmd)
|
extern inline void pmd_free(pmd_t * pmd)
|
{
|
{
|
free_pointer_table (pmd);
|
free_pointer_table (pmd);
|
}
|
}
|
|
|
extern inline pmd_t * pmd_alloc(pgd_t * pgd, unsigned long address)
|
extern inline pmd_t * pmd_alloc(pgd_t * pgd, unsigned long address)
|
{
|
{
|
address = (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
|
address = (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
|
if (pgd_none(*pgd)) {
|
if (pgd_none(*pgd)) {
|
pmd_t *page = get_pointer_table();
|
pmd_t *page = get_pointer_table();
|
if (pgd_none(*pgd)) {
|
if (pgd_none(*pgd)) {
|
if (page) {
|
if (page) {
|
pgd_set(pgd, page);
|
pgd_set(pgd, page);
|
return page + address;
|
return page + address;
|
}
|
}
|
pgd_set(pgd, (pmd_t *)BAD_PAGETABLE);
|
pgd_set(pgd, (pmd_t *)BAD_PAGETABLE);
|
return NULL;
|
return NULL;
|
}
|
}
|
free_pointer_table(page);
|
free_pointer_table(page);
|
}
|
}
|
if (pgd_bad(*pgd)) {
|
if (pgd_bad(*pgd)) {
|
printk(PgtabStr_bad_pgd, pgd_val(*pgd));
|
printk(PgtabStr_bad_pgd, pgd_val(*pgd));
|
pgd_set(pgd, (pmd_t *)BAD_PAGETABLE);
|
pgd_set(pgd, (pmd_t *)BAD_PAGETABLE);
|
return NULL;
|
return NULL;
|
}
|
}
|
return (pmd_t *) pgd_page(*pgd) + address;
|
return (pmd_t *) pgd_page(*pgd) + address;
|
}
|
}
|
|
|
extern inline void pte_free_kernel(pte_t * pte)
|
extern inline void pte_free_kernel(pte_t * pte)
|
{
|
{
|
cache_page((unsigned long)pte);
|
cache_page((unsigned long)pte);
|
free_page((unsigned long) pte);
|
free_page((unsigned long) pte);
|
}
|
}
|
|
|
extern inline pte_t * pte_alloc_kernel(pmd_t * pmd, unsigned long address)
|
extern inline pte_t * pte_alloc_kernel(pmd_t * pmd, unsigned long address)
|
{
|
{
|
address = (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
|
address = (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
|
if (pmd_none(*pmd)) {
|
if (pmd_none(*pmd)) {
|
pte_t * page = (pte_t *) get_free_page(GFP_KERNEL);
|
pte_t * page = (pte_t *) get_free_page(GFP_KERNEL);
|
if (pmd_none(*pmd)) {
|
if (pmd_none(*pmd)) {
|
if (page) {
|
if (page) {
|
nocache_page((unsigned long)page);
|
nocache_page((unsigned long)page);
|
pmd_set(pmd, page);
|
pmd_set(pmd, page);
|
return page + address;
|
return page + address;
|
}
|
}
|
pmd_set(pmd, BAD_PAGETABLE);
|
pmd_set(pmd, BAD_PAGETABLE);
|
return NULL;
|
return NULL;
|
}
|
}
|
free_page((unsigned long) page);
|
free_page((unsigned long) page);
|
}
|
}
|
if (pmd_bad(*pmd)) {
|
if (pmd_bad(*pmd)) {
|
printk(PgtabStr_bad_pmdk, pmd_val(*pmd));
|
printk(PgtabStr_bad_pmdk, pmd_val(*pmd));
|
pmd_set(pmd, BAD_PAGETABLE);
|
pmd_set(pmd, BAD_PAGETABLE);
|
return NULL;
|
return NULL;
|
}
|
}
|
return (pte_t *) pmd_page(*pmd) + address;
|
return (pte_t *) pmd_page(*pmd) + address;
|
}
|
}
|
|
|
extern inline void pmd_free_kernel(pmd_t * pmd)
|
extern inline void pmd_free_kernel(pmd_t * pmd)
|
{
|
{
|
free_kpointer_table(pmd);
|
free_kpointer_table(pmd);
|
}
|
}
|
|
|
extern inline pmd_t * pmd_alloc_kernel(pgd_t * pgd, unsigned long address)
|
extern inline pmd_t * pmd_alloc_kernel(pgd_t * pgd, unsigned long address)
|
{
|
{
|
address = (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
|
address = (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
|
if (pgd_none(*pgd)) {
|
if (pgd_none(*pgd)) {
|
pmd_t *page = get_kpointer_table();
|
pmd_t *page = get_kpointer_table();
|
if (pgd_none(*pgd)) {
|
if (pgd_none(*pgd)) {
|
if (page) {
|
if (page) {
|
pgd_set(pgd, page);
|
pgd_set(pgd, page);
|
return page + address;
|
return page + address;
|
}
|
}
|
pgd_set(pgd, (pmd_t *)BAD_PAGETABLE);
|
pgd_set(pgd, (pmd_t *)BAD_PAGETABLE);
|
return NULL;
|
return NULL;
|
}
|
}
|
free_kpointer_table(page);
|
free_kpointer_table(page);
|
}
|
}
|
if (pgd_bad(*pgd)) {
|
if (pgd_bad(*pgd)) {
|
printk(PgtabStr_bad_pgdk, pgd_val(*pgd));
|
printk(PgtabStr_bad_pgdk, pgd_val(*pgd));
|
pgd_set(pgd, (pmd_t *)BAD_PAGETABLE);
|
pgd_set(pgd, (pmd_t *)BAD_PAGETABLE);
|
return NULL;
|
return NULL;
|
}
|
}
|
return (pmd_t *) pgd_page(*pgd) + address;
|
return (pmd_t *) pgd_page(*pgd) + address;
|
}
|
}
|
|
|
extern inline void pgd_free(pgd_t * pgd)
|
extern inline void pgd_free(pgd_t * pgd)
|
{
|
{
|
free_pointer_table ((pmd_t *) pgd);
|
free_pointer_table ((pmd_t *) pgd);
|
}
|
}
|
|
|
extern inline pgd_t * pgd_alloc(void)
|
extern inline pgd_t * pgd_alloc(void)
|
{
|
{
|
return (pgd_t *)get_pointer_table ();
|
return (pgd_t *)get_pointer_table ();
|
}
|
}
|
|
|
#define flush_icache() \
|
#define flush_icache() \
|
do { \
|
do { \
|
if (CPU_IS_040_OR_060) \
|
if (CPU_IS_040_OR_060) \
|
asm __volatile__ ("nop; .word 0xf498 /* cinva %%ic */"); \
|
asm __volatile__ ("nop; .word 0xf498 /* cinva %%ic */"); \
|
else \
|
else \
|
asm __volatile__ ("movec %/cacr,%/d0;" \
|
asm __volatile__ ("movec %/cacr,%/d0;" \
|
"oriw %0,%/d0;" \
|
"oriw %0,%/d0;" \
|
"movec %/d0,%/cacr" \
|
"movec %/d0,%/cacr" \
|
: /* no outputs */ \
|
: /* no outputs */ \
|
: "i" (FLUSH_I) \
|
: "i" (FLUSH_I) \
|
: "d0"); \
|
: "d0"); \
|
} while (0)
|
} while (0)
|
|
|
/*
|
/*
|
* invalidate the cache for the specified memory range.
|
* invalidate the cache for the specified memory range.
|
* It starts at the physical address specified for
|
* It starts at the physical address specified for
|
* the given number of bytes.
|
* the given number of bytes.
|
*/
|
*/
|
extern void cache_clear (unsigned long paddr, int len);
|
extern void cache_clear (unsigned long paddr, int len);
|
/*
|
/*
|
* push any dirty cache in the specified memory range.
|
* push any dirty cache in the specified memory range.
|
* It starts at the physical address specified for
|
* It starts at the physical address specified for
|
* the given number of bytes.
|
* the given number of bytes.
|
*/
|
*/
|
extern void cache_push (unsigned long paddr, int len);
|
extern void cache_push (unsigned long paddr, int len);
|
|
|
/*
|
/*
|
* push and invalidate pages in the specified user virtual
|
* push and invalidate pages in the specified user virtual
|
* memory range.
|
* memory range.
|
*/
|
*/
|
extern void cache_push_v (unsigned long vaddr, int len);
|
extern void cache_push_v (unsigned long vaddr, int len);
|
|
|
/* cache code */
|
/* cache code */
|
#define FLUSH_I_AND_D (0x00000808)
|
#define FLUSH_I_AND_D (0x00000808)
|
#define FLUSH_I (0x00000008)
|
#define FLUSH_I (0x00000008)
|
|
|
/* This is needed whenever the virtual mapping of the current
|
/* This is needed whenever the virtual mapping of the current
|
process changes. */
|
process changes. */
|
#define __flush_cache_all() \
|
#define __flush_cache_all() \
|
do { \
|
do { \
|
if (CPU_IS_040_OR_060) \
|
if (CPU_IS_040_OR_060) \
|
__asm__ __volatile__ ("nop; .word 0xf478\n" ::); \
|
__asm__ __volatile__ ("nop; .word 0xf478\n" ::); \
|
else \
|
else \
|
__asm__ __volatile__ ("movec %%cacr,%%d0\n\t" \
|
__asm__ __volatile__ ("movec %%cacr,%%d0\n\t" \
|
"orw %0,%%d0\n\t" \
|
"orw %0,%%d0\n\t" \
|
"movec %%d0,%%cacr" \
|
"movec %%d0,%%cacr" \
|
: : "di" (FLUSH_I_AND_D) : "d0"); \
|
: : "di" (FLUSH_I_AND_D) : "d0"); \
|
} while (0)
|
} while (0)
|
|
|
#define __flush_cache_030() \
|
#define __flush_cache_030() \
|
do { \
|
do { \
|
if (CPU_IS_020_OR_030) \
|
if (CPU_IS_020_OR_030) \
|
__asm__ __volatile__ ("movec %%cacr,%%d0\n\t" \
|
__asm__ __volatile__ ("movec %%cacr,%%d0\n\t" \
|
"orw %0,%%d0\n\t" \
|
"orw %0,%%d0\n\t" \
|
"movec %%d0,%%cacr" \
|
"movec %%d0,%%cacr" \
|
: : "di" (FLUSH_I_AND_D) : "d0"); \
|
: : "di" (FLUSH_I_AND_D) : "d0"); \
|
} while (0)
|
} while (0)
|
|
|
#define flush_cache_all() __flush_cache_all()
|
#define flush_cache_all() __flush_cache_all()
|
|
|
extern inline void flush_cache_mm(struct mm_struct *mm)
|
extern inline void flush_cache_mm(struct mm_struct *mm)
|
{
|
{
|
#if FLUSH_VIRTUAL_CACHE_040
|
#if FLUSH_VIRTUAL_CACHE_040
|
if (mm == current->mm) __flush_cache_all();
|
if (mm == current->mm) __flush_cache_all();
|
#else
|
#else
|
if (mm == current->mm) __flush_cache_030();
|
if (mm == current->mm) __flush_cache_030();
|
#endif
|
#endif
|
}
|
}
|
|
|
extern inline void flush_cache_range(struct mm_struct *mm,
|
extern inline void flush_cache_range(struct mm_struct *mm,
|
unsigned long start,
|
unsigned long start,
|
unsigned long end)
|
unsigned long end)
|
{
|
{
|
if (mm == current->mm){
|
if (mm == current->mm){
|
#if FLUSH_VIRTUAL_CACHE_040
|
#if FLUSH_VIRTUAL_CACHE_040
|
if (CPU_IS_040_OR_060)
|
if (CPU_IS_040_OR_060)
|
cache_push_v(start, end-start);
|
cache_push_v(start, end-start);
|
else
|
else
|
#endif
|
#endif
|
__flush_cache_030();
|
__flush_cache_030();
|
}
|
}
|
}
|
}
|
|
|
extern inline void flush_cache_page(struct vm_area_struct *vma,
|
extern inline void flush_cache_page(struct vm_area_struct *vma,
|
unsigned long vmaddr)
|
unsigned long vmaddr)
|
{
|
{
|
if (vma->vm_mm == current->mm){
|
if (vma->vm_mm == current->mm){
|
#if FLUSH_VIRTUAL_CACHE_040
|
#if FLUSH_VIRTUAL_CACHE_040
|
if (CPU_IS_040_OR_060)
|
if (CPU_IS_040_OR_060)
|
cache_push_v(vmaddr, PAGE_SIZE);
|
cache_push_v(vmaddr, PAGE_SIZE);
|
else
|
else
|
#endif
|
#endif
|
__flush_cache_030();
|
__flush_cache_030();
|
}
|
}
|
}
|
}
|
|
|
/* Push the page at kernel virtual address and clear the icache */
|
/* Push the page at kernel virtual address and clear the icache */
|
extern inline void flush_page_to_ram (unsigned long address)
|
extern inline void flush_page_to_ram (unsigned long address)
|
{
|
{
|
if (CPU_IS_040_OR_060) {
|
if (CPU_IS_040_OR_060) {
|
register unsigned long tmp __asm ("a0") = VTOP(address);
|
register unsigned long tmp __asm ("a0") = VTOP(address);
|
__asm__ __volatile__ ("nop\n\t"
|
__asm__ __volatile__ ("nop\n\t"
|
".word 0xf470 /* cpushp %%dc,(%0) */\n\t"
|
".word 0xf470 /* cpushp %%dc,(%0) */\n\t"
|
".word 0xf490 /* cinvp %%ic,(%0) */"
|
".word 0xf490 /* cinvp %%ic,(%0) */"
|
: : "a" (tmp));
|
: : "a" (tmp));
|
}
|
}
|
else
|
else
|
__asm volatile ("movec %%cacr,%%d0\n\t"
|
__asm volatile ("movec %%cacr,%%d0\n\t"
|
"orw %0,%%d0\n\t"
|
"orw %0,%%d0\n\t"
|
"movec %%d0,%%cacr"
|
"movec %%d0,%%cacr"
|
: : "di" (FLUSH_I) : "d0");
|
: : "di" (FLUSH_I) : "d0");
|
}
|
}
|
|
|
/* Push n pages at kernel virtual address and clear the icache */
|
/* Push n pages at kernel virtual address and clear the icache */
|
extern inline void flush_pages_to_ram (unsigned long address, int n)
|
extern inline void flush_pages_to_ram (unsigned long address, int n)
|
{
|
{
|
if (CPU_IS_040_OR_060) {
|
if (CPU_IS_040_OR_060) {
|
while (n--) {
|
while (n--) {
|
register unsigned long tmp __asm ("a0") = VTOP(address);
|
register unsigned long tmp __asm ("a0") = VTOP(address);
|
__asm__ __volatile__ ("nop\n\t"
|
__asm__ __volatile__ ("nop\n\t"
|
".word 0xf470 /* cpushp %%dc,(%0) */\n\t"
|
".word 0xf470 /* cpushp %%dc,(%0) */\n\t"
|
".word 0xf490 /* cinvp %%ic,(%0) */"
|
".word 0xf490 /* cinvp %%ic,(%0) */"
|
: : "a" (tmp));
|
: : "a" (tmp));
|
address += PAGE_SIZE;
|
address += PAGE_SIZE;
|
}
|
}
|
}
|
}
|
else
|
else
|
__asm volatile ("movec %%cacr,%%d0\n\t"
|
__asm volatile ("movec %%cacr,%%d0\n\t"
|
"orw %0,%%d0\n\t"
|
"orw %0,%%d0\n\t"
|
"movec %%d0,%%cacr"
|
"movec %%d0,%%cacr"
|
: : "di" (FLUSH_I) : "d0");
|
: : "di" (FLUSH_I) : "d0");
|
}
|
}
|
|
|
/*
|
/*
|
* Check if the addr/len goes up to the end of a physical
|
* Check if the addr/len goes up to the end of a physical
|
* memory chunk. Used for DMA functions.
|
* memory chunk. Used for DMA functions.
|
*/
|
*/
|
int mm_end_of_chunk (unsigned long addr, int len);
|
int mm_end_of_chunk (unsigned long addr, int len);
|
|
|
/*
|
/*
|
* Map some physical address range into the kernel address space. The
|
* Map some physical address range into the kernel address space. The
|
* code is copied and adapted from map_chunk().
|
* code is copied and adapted from map_chunk().
|
*/
|
*/
|
extern unsigned long kernel_map(unsigned long paddr, unsigned long size,
|
extern unsigned long kernel_map(unsigned long paddr, unsigned long size,
|
int nocacheflag, unsigned long *memavailp );
|
int nocacheflag, unsigned long *memavailp );
|
/*
|
/*
|
* Change the cache mode of some kernel address range.
|
* Change the cache mode of some kernel address range.
|
*/
|
*/
|
extern void kernel_set_cachemode( unsigned long address, unsigned long size,
|
extern void kernel_set_cachemode( unsigned long address, unsigned long size,
|
unsigned cmode );
|
unsigned cmode );
|
|
|
/* Values for nocacheflag and cmode */
|
/* Values for nocacheflag and cmode */
|
#define KERNELMAP_FULL_CACHING 0
|
#define KERNELMAP_FULL_CACHING 0
|
#define KERNELMAP_NOCACHE_SER 1
|
#define KERNELMAP_NOCACHE_SER 1
|
#define KERNELMAP_NOCACHE_NONSER 2
|
#define KERNELMAP_NOCACHE_NONSER 2
|
#define KERNELMAP_NO_COPYBACK 3
|
#define KERNELMAP_NO_COPYBACK 3
|
|
|
/*
|
/*
|
* The m68k doesn't have any external MMU info: the kernel page
|
* The m68k doesn't have any external MMU info: the kernel page
|
* tables contain all the necessary information.
|
* tables contain all the necessary information.
|
*/
|
*/
|
extern inline void update_mmu_cache(struct vm_area_struct * vma,
|
extern inline void update_mmu_cache(struct vm_area_struct * vma,
|
unsigned long address, pte_t pte)
|
unsigned long address, pte_t pte)
|
{
|
{
|
}
|
}
|
|
|
/*
|
/*
|
* I don't know what is going on here, but since these were changed,
|
* I don't know what is going on here, but since these were changed,
|
* swapping hasn't been working on the 68040.
|
* swapping hasn't been working on the 68040.
|
*/
|
*/
|
|
|
#define SWP_TYPE(entry) (((entry) >> 2) & 0x7f)
|
#define SWP_TYPE(entry) (((entry) >> 2) & 0x7f)
|
#if 0
|
#if 0
|
#define SWP_OFFSET(entry) ((entry) >> 9)
|
#define SWP_OFFSET(entry) ((entry) >> 9)
|
#define SWP_ENTRY(type,offset) (((type) << 2) | ((offset) << 9))
|
#define SWP_ENTRY(type,offset) (((type) << 2) | ((offset) << 9))
|
#else
|
#else
|
#define SWP_OFFSET(entry) ((entry) >> PAGE_SHIFT)
|
#define SWP_OFFSET(entry) ((entry) >> PAGE_SHIFT)
|
#define SWP_ENTRY(type,offset) (((type) << 2) | ((offset) << PAGE_SHIFT))
|
#define SWP_ENTRY(type,offset) (((type) << 2) | ((offset) << PAGE_SHIFT))
|
#endif
|
#endif
|
|
|
|
|
#endif /* __ASSEMBLY__ */
|
#endif /* __ASSEMBLY__ */
|
|
|
#else /* NO_MM */
|
#else /* NO_MM */
|
|
|
extern inline void flush_cache_mm(struct mm_struct *mm)
|
extern inline void flush_cache_mm(struct mm_struct *mm)
|
{
|
{
|
}
|
}
|
|
|
extern inline void flush_cache_range(struct mm_struct *mm,
|
extern inline void flush_cache_range(struct mm_struct *mm,
|
unsigned long start,
|
unsigned long start,
|
unsigned long end)
|
unsigned long end)
|
{
|
{
|
}
|
}
|
|
|
/* Push the page at kernel virtual address and clear the icache */
|
/* Push the page at kernel virtual address and clear the icache */
|
extern inline void flush_page_to_ram (unsigned long address)
|
extern inline void flush_page_to_ram (unsigned long address)
|
{
|
{
|
}
|
}
|
|
|
/* Push n pages at kernel virtual address and clear the icache */
|
/* Push n pages at kernel virtual address and clear the icache */
|
extern inline void flush_pages_to_ram (unsigned long address, int n)
|
extern inline void flush_pages_to_ram (unsigned long address, int n)
|
{
|
{
|
}
|
}
|
|
|
#endif /* NO_MM */
|
#endif /* NO_MM */
|
|
|
#endif /* _M68K_PGTABLE_H */
|
#endif /* _M68K_PGTABLE_H */
|
|
|
