arch/sparc/mm/loadmmu.c

/* */
This source file includes following definitions.
load_mmu
   1 /* $Id: loadmmu.c,v 1.23 1996/02/21 17:56:35 miguel 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 
  11 #include <asm/system.h>
  12 #include <asm/page.h>
  13 #include <asm/pgtable.h>
  14 
  15 struct ctx_list *ctx_list_pool;
  16 struct ctx_list ctx_free;
  17 struct ctx_list ctx_used;
  18 
  19 unsigned long (*alloc_kernel_stack)(struct task_struct *tsk);
  20 void (*free_kernel_stack)(unsigned long stack);
  21 struct task_struct *(*alloc_task_struct)(void);
  22 void (*free_task_struct)(struct task_struct *tsk);
  23 
  24 void (*quick_kernel_fault)(unsigned long);
  25 
  26 void (*mmu_exit_hook)(void);
  27 void (*mmu_flush_hook)(void);
  28 
  29 char *(*mmu_lockarea)(char *, unsigned long);
  30 void  (*mmu_unlockarea)(char *, unsigned long);
  31 char *(*mmu_get_scsi_buffer)(char *, unsigned long, struct linux_sbus *sbus);
  32 void  (*mmu_release_scsi_buffer)(char *, unsigned long, struct linux_sbus *sbus);
  33 
  34 
  35 void (*update_mmu_cache)(struct vm_area_struct *vma, unsigned long address, pte_t pte);
  36 
  37 void (*invalidate_all)(void);
  38 void (*invalidate_mm)(struct mm_struct *);
  39 void (*invalidate_range)(struct mm_struct *, unsigned long start, unsigned long end);
  40 void (*invalidate_page)(struct vm_area_struct *, unsigned long address);
  41 
  42 void (*set_pte)(pte_t *pteptr, pte_t pteval);
  43 
  44 unsigned int pmd_shift, pmd_size, pmd_mask;
  45 unsigned int (*pmd_align)(unsigned int);
  46 unsigned int pgdir_shift, pgdir_size, pgdir_mask;
  47 unsigned int (*pgdir_align)(unsigned int);
  48 unsigned int ptrs_per_pte, ptrs_per_pmd, ptrs_per_pgd;
  49 unsigned int pg_iobits;
  50 
  51 pgprot_t page_none, page_shared, page_copy, page_readonly, page_kernel;
  52 
  53 unsigned long (*pte_page)(pte_t);
  54 unsigned long (*pmd_page)(pmd_t);
  55 unsigned long (*pgd_page)(pgd_t);
  56 
  57 void (*sparc_update_rootmmu_dir)(struct task_struct *, pgd_t *pgdir);
  58 unsigned long (*(vmalloc_start))(void);
  59 void (*switch_to_context)(struct task_struct *tsk);
  60 
  61 int (*pte_none)(pte_t);
  62 int (*pte_present)(pte_t);
  63 int (*pte_inuse)(pte_t *);
  64 void (*pte_clear)(pte_t *);
  65 void (*pte_reuse)(pte_t *);
  66 
  67 int (*pmd_none)(pmd_t);
  68 int (*pmd_bad)(pmd_t);
  69 int (*pmd_present)(pmd_t);
  70 int (*pmd_inuse)(pmd_t *);
  71 void (*pmd_clear)(pmd_t *);
  72 void (*pmd_reuse)(pmd_t *);
  73 
  74 int (*pgd_none)(pgd_t);
  75 int (*pgd_bad)(pgd_t);
  76 int (*pgd_present)(pgd_t);
  77 int (*pgd_inuse)(pgd_t *);
  78 void (*pgd_clear)(pgd_t *);
  79 void (*pgd_reuse)(pgd_t *);
  80 
  81 pte_t (*mk_pte)(unsigned long, pgprot_t);
  82 pte_t (*mk_pte_io)(unsigned long, pgprot_t);
  83 void (*pgd_set)(pgd_t *, pmd_t *);
  84 pte_t (*pte_modify)(pte_t, pgprot_t);
  85 pgd_t * (*pgd_offset)(struct mm_struct *, unsigned long);
  86 pmd_t * (*pmd_offset)(pgd_t *, unsigned long);
  87 pte_t * (*pte_offset)(pmd_t *, unsigned long);
  88 void (*pte_free_kernel)(pte_t *);
  89 pte_t * (*pte_alloc_kernel)(pmd_t *, unsigned long);
  90 
  91 void (*pmd_free_kernel)(pmd_t *);
  92 pmd_t * (*pmd_alloc_kernel)(pgd_t *, unsigned long);
  93 void (*pte_free)(pte_t *);
  94 pte_t * (*pte_alloc)(pmd_t *, unsigned long);
  95 
  96 void (*pmd_free)(pmd_t *);
  97 pmd_t * (*pmd_alloc)(pgd_t *, unsigned long);
  98 void (*pgd_free)(pgd_t *);
  99 
 100 pgd_t * (*pgd_alloc)(void);
 101 
 102 int (*pte_write)(pte_t);
 103 int (*pte_dirty)(pte_t);
 104 int (*pte_young)(pte_t);
 105 
 106 pte_t (*pte_wrprotect)(pte_t);
 107 pte_t (*pte_mkclean)(pte_t);
 108 pte_t (*pte_mkold)(pte_t);
 109 pte_t (*pte_mkwrite)(pte_t);
 110 pte_t (*pte_mkdirty)(pte_t);
 111 pte_t (*pte_mkyoung)(pte_t);
 112 
 113 char *(*mmu_info)(void);
 114 
 115 extern void ld_mmu_sun4c(void);
 116 extern void ld_mmu_srmmu(void);
 117 
 118 void
 119 load_mmu(void)
     /*  */
 120 {
 121         switch(sparc_cpu_model) {
 122         case sun4c:
 123                 ld_mmu_sun4c();
 124                 break;
 125         case sun4m:
 126         case sun4d:
 127         case sun4e:
 128                 ld_mmu_srmmu();
 129                 break;
 130         default:
 131                 printk("load_mmu:MMU support not available for this architecture\n");
 132                 printk("load_mmu:sparc_cpu_model = %d\n", (int) sparc_cpu_model);
 133                 printk("load_mmu:Halting...\n");
 134                 panic("load_mmu()");
 135         };
 136 }
/* */
root/arch/sparc/mm/loadmmu.c

DEFINITIONS
