arch/sparc/mm/loadmmu.c

/* */
This source file includes following definitions.
load_mmu
   1 /* $Id: loadmmu.c,v 1.33 1996/04/21 10:32:26 davem Exp $
   2  * loadmmu.c:  This code loads up all the mm function pointers once the
   3  *             machine type has been determined.  It also sets the static
   4  *             mmu values such as PAGE_NONE, etc.
   5  *
   6  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   7  */
   8 
   9 #include <linux/kernel.h>
  10 #include <linux/mm.h>
  11 
  12 #include <asm/system.h>
  13 #include <asm/page.h>
  14 #include <asm/pgtable.h>
  15 
  16 struct ctx_list *ctx_list_pool;
  17 struct ctx_list ctx_free;
  18 struct ctx_list ctx_used;
  19 
  20 unsigned long (*alloc_kernel_stack)(struct task_struct *tsk);
  21 void (*free_kernel_stack)(unsigned long stack);
  22 struct task_struct *(*alloc_task_struct)(void);
  23 void (*free_task_struct)(struct task_struct *tsk);
  24 
  25 void (*quick_kernel_fault)(unsigned long);
  26 
  27 void (*mmu_exit_hook)(void);
  28 void (*mmu_flush_hook)(void);
  29 
  30 /* translate between physical and virtual addresses */
  31 unsigned long (*mmu_v2p)(unsigned long);
  32 unsigned long (*mmu_p2v)(unsigned long);
  33 
  34 char *(*mmu_lockarea)(char *, unsigned long);
  35 void  (*mmu_unlockarea)(char *, unsigned long);
  36 
  37 char *(*mmu_get_scsi_one)(char *, unsigned long, struct linux_sbus *sbus);
  38 void  (*mmu_get_scsi_sgl)(struct mmu_sglist *, int, struct linux_sbus *sbus);
  39 void  (*mmu_release_scsi_one)(char *, unsigned long, struct linux_sbus *sbus);
  40 void  (*mmu_release_scsi_sgl)(struct mmu_sglist *, int, struct linux_sbus *sbus);
  41 
  42 void (*update_mmu_cache)(struct vm_area_struct *vma, unsigned long address, pte_t pte);
  43 
  44 #ifdef __SMP__
  45 void (*local_flush_cache_all)(void);
  46 void (*local_flush_cache_mm)(struct mm_struct *);
  47 void (*local_flush_cache_range)(struct mm_struct *, unsigned long start,
  48                                 unsigned long end);
  49 void (*local_flush_cache_page)(struct vm_area_struct *, unsigned long address);
  50 
  51 void (*local_flush_tlb_all)(void);
  52 void (*local_flush_tlb_mm)(struct mm_struct *);
  53 void (*local_flush_tlb_range)(struct mm_struct *, unsigned long start,
  54                               unsigned long end);
  55 void (*local_flush_tlb_page)(struct vm_area_struct *, unsigned long address);
  56 void (*local_flush_page_to_ram)(unsigned long address);
  57 #endif
  58 
  59 void (*flush_cache_all)(void);
  60 void (*flush_cache_mm)(struct mm_struct *);
  61 void (*flush_cache_range)(struct mm_struct *, unsigned long start,
  62                           unsigned long end);
  63 void (*flush_cache_page)(struct vm_area_struct *, unsigned long address);
  64 
  65 void (*flush_tlb_all)(void);
  66 void (*flush_tlb_mm)(struct mm_struct *);
  67 void (*flush_tlb_range)(struct mm_struct *, unsigned long start,
  68                         unsigned long end);
  69 void (*flush_tlb_page)(struct vm_area_struct *, unsigned long address);
  70 
  71 void (*flush_page_to_ram)(unsigned long page);
  72 
  73 void (*set_pte)(pte_t *pteptr, pte_t pteval);
  74 
  75 unsigned int pmd_shift, pmd_size, pmd_mask;
  76 unsigned int (*pmd_align)(unsigned int);
  77 unsigned int pgdir_shift, pgdir_size, pgdir_mask;
  78 unsigned int (*pgdir_align)(unsigned int);
  79 unsigned int ptrs_per_pte, ptrs_per_pmd, ptrs_per_pgd;
  80 unsigned int pg_iobits;
  81 
  82 pgprot_t page_none, page_shared, page_copy, page_readonly, page_kernel;
  83 
  84 unsigned long (*pte_page)(pte_t);
  85 unsigned long (*pmd_page)(pmd_t);
  86 unsigned long (*pgd_page)(pgd_t);
  87 
  88 void (*sparc_update_rootmmu_dir)(struct task_struct *, pgd_t *pgdir);
  89 unsigned long (*(vmalloc_start))(void);
  90 void (*switch_to_context)(struct task_struct *tsk);
  91 
  92 int (*pte_none)(pte_t);
  93 int (*pte_present)(pte_t);
  94 void (*pte_clear)(pte_t *);
  95 
  96 int (*pmd_none)(pmd_t);
  97 int (*pmd_bad)(pmd_t);
  98 int (*pmd_present)(pmd_t);
  99 void (*pmd_clear)(pmd_t *);
 100 
 101 int (*pgd_none)(pgd_t);
 102 int (*pgd_bad)(pgd_t);
 103 int (*pgd_present)(pgd_t);
 104 void (*pgd_clear)(pgd_t *);
 105 
 106 pte_t (*mk_pte)(unsigned long, pgprot_t);
 107 pte_t (*mk_pte_io)(unsigned long, pgprot_t, int);
 108 void (*pgd_set)(pgd_t *, pmd_t *);
 109 pte_t (*pte_modify)(pte_t, pgprot_t);
 110 pgd_t * (*pgd_offset)(struct mm_struct *, unsigned long);
 111 pmd_t * (*pmd_offset)(pgd_t *, unsigned long);
 112 pte_t * (*pte_offset)(pmd_t *, unsigned long);
 113 void (*pte_free_kernel)(pte_t *);
 114 pte_t * (*pte_alloc_kernel)(pmd_t *, unsigned long);
 115 
 116 void (*pmd_free_kernel)(pmd_t *);
 117 pmd_t * (*pmd_alloc_kernel)(pgd_t *, unsigned long);
 118 void (*pte_free)(pte_t *);
 119 pte_t * (*pte_alloc)(pmd_t *, unsigned long);
 120 
 121 void (*pmd_free)(pmd_t *);
 122 pmd_t * (*pmd_alloc)(pgd_t *, unsigned long);
 123 void (*pgd_free)(pgd_t *);
 124 
 125 pgd_t * (*pgd_alloc)(void);
 126 
 127 int (*pte_write)(pte_t);
 128 int (*pte_dirty)(pte_t);
 129 int (*pte_young)(pte_t);
 130 
 131 pte_t (*pte_wrprotect)(pte_t);
 132 pte_t (*pte_mkclean)(pte_t);
 133 pte_t (*pte_mkold)(pte_t);
 134 pte_t (*pte_mkwrite)(pte_t);
 135 pte_t (*pte_mkdirty)(pte_t);
 136 pte_t (*pte_mkyoung)(pte_t);
 137 
 138 char *(*mmu_info)(void);
 139 
 140 extern void ld_mmu_sun4c(void);
 141 extern void ld_mmu_srmmu(void);
 142 
 143 void
 144 load_mmu(void)
     /*  */
 145 {
 146         switch(sparc_cpu_model) {
 147         case sun4c:
 148                 ld_mmu_sun4c();
 149                 break;
 150         case sun4m:
 151         case sun4d:
 152         case sun4e:
 153                 ld_mmu_srmmu();
 154                 break;
 155         default:
 156                 printk("load_mmu:MMU support not available for this architecture\n");
 157                 printk("load_mmu:sparc_cpu_model = %d\n", (int) sparc_cpu_model);
 158                 printk("load_mmu:Halting...\n");
 159                 panic("load_mmu()");
 160         }
 161 }
/* */
root/arch/sparc/mm/loadmmu.c

DEFINITIONS
