arch/sparc/mm/init_64.h

   1 #ifndef _SPARC64_MM_INIT_H
   2 #define _SPARC64_MM_INIT_H
   3
   4 /* Most of the symbols in this file are defined in init.c and
   5  * marked non-static so that assembler code can get at them.
   6  */
   7
   8 #define MAX_PHYS_ADDRESS        (1UL << 42UL)
   9 #define KPTE_BITMAP_CHUNK_SZ    (256UL * 1024UL * 1024UL)
  10 #define KPTE_BITMAP_BYTES       \
  11         ((MAX_PHYS_ADDRESS / KPTE_BITMAP_CHUNK_SZ) / 8)
  12
  13 extern unsigned long kern_linear_pte_xor[2];
  14 extern unsigned long kpte_linear_bitmap[KPTE_BITMAP_BYTES / sizeof(unsigned long)];
  15 extern unsigned int sparc64_highest_unlocked_tlb_ent;
  16 extern unsigned long sparc64_kern_pri_context;
  17 extern unsigned long sparc64_kern_pri_nuc_bits;
  18 extern unsigned long sparc64_kern_sec_context;
  19 extern void mmu_info(struct seq_file *m);
  20
  21 struct linux_prom_translation {
  22         unsigned long virt;
  23         unsigned long size;
  24         unsigned long data;
  25 };
  26
  27 /* Exported for kernel TLB miss handling in ktlb.S */
  28 extern struct linux_prom_translation prom_trans[512];
  29 extern unsigned int prom_trans_ents;
  30
  31 /* Exported for SMP bootup purposes. */
  32 extern unsigned long kern_locked_tte_data;
  33
  34 extern void prom_world(int enter);
  35
  36 extern void free_initmem(void);
  37
  38 #ifdef CONFIG_SPARSEMEM_VMEMMAP
  39 #define VMEMMAP_CHUNK_SHIFT     22
  40 #define VMEMMAP_CHUNK           (1UL << VMEMMAP_CHUNK_SHIFT)
  41 #define VMEMMAP_CHUNK_MASK      ~(VMEMMAP_CHUNK - 1UL)
  42 #define VMEMMAP_ALIGN(x)        (((x)+VMEMMAP_CHUNK-1UL)&VMEMMAP_CHUNK_MASK)
  43
  44 #define VMEMMAP_SIZE    ((((1UL << MAX_PHYSADDR_BITS) >> PAGE_SHIFT) * \
  45                           sizeof(struct page *)) >> VMEMMAP_CHUNK_SHIFT)
  46 extern unsigned long vmemmap_table[VMEMMAP_SIZE];
  47 #endif
  48
  49 #endif /* _SPARC64_MM_INIT_H */