arch/sparc/mm/nosun4c.c

   1 /*
   2  * nosun4c.c: This file is a bunch of dummies for SMP compiles,
   3  *         so that it does not need sun4c and avoid ifdefs.
   4  *
   5  * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
   6  */
   7
   8 #include <linux/kernel.h>
   9 #include <linux/mm.h>
  10 #include <linux/init.h>
  11 #include <asm/pgtable.h>
  12
  13 static char shouldnothappen[] __initdata = "32bit SMP kernel only supports sun4m and sun4d\n";
  14
  15 /* Dummies */
  16 struct sun4c_mmu_ring {
  17         unsigned long xxx1[3];
  18         unsigned char xxx2[2];
  19         int xxx3;
  20 };
  21 struct sun4c_mmu_ring sun4c_kernel_ring;
  22 struct sun4c_mmu_ring sun4c_kfree_ring;
  23 unsigned long sun4c_kernel_faults;
  24 unsigned long *sun4c_memerr_reg;
  25
  26 static void __init should_not_happen(void)
  27 {
  28         prom_printf(shouldnothappen);
  29         prom_halt();
  30 }
  31
  32 unsigned long __init sun4c_paging_init(unsigned long start_mem, unsigned long end_mem)
  33 {
  34         should_not_happen();
  35         return 0;
  36 }
  37
  38 void __init ld_mmu_sun4c(void)
  39 {
  40         should_not_happen();
  41 }
  42
  43 void sun4c_mapioaddr(unsigned long physaddr, unsigned long virt_addr, int bus_type, int rdonly)
  44 {
  45 }
  46
  47 void sun4c_unmapioaddr(unsigned long virt_addr)
  48 {
  49 }
  50
  51 void sun4c_complete_all_stores(void)
  52 {
  53 }
  54
  55 pte_t *sun4c_pte_offset(pmd_t * dir, unsigned long address)
  56 {
  57         return NULL;
  58 }
  59
  60 pte_t *sun4c_pte_offset_kernel(pmd_t *dir, unsigned long address)
  61 {
  62         return NULL;
  63 }
  64
  65 void sun4c_update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep)
  66 {
  67 }
  68
  69 void __init sun4c_probe_vac(void)
  70 {
  71         should_not_happen();
  72 }
  73
  74 void __init sun4c_probe_memerr_reg(void)
  75 {
  76         should_not_happen();
  77 }