arch/sparc/mm/init_64.h

   1 #ifndef _SPARC64_MM_INIT_H
   2 #define _SPARC64_MM_INIT_H
   3
   4 #include <asm/page.h>
   5
   6 /* Most of the symbols in this file are defined in init.c and
   7  * marked non-static so that assembler code can get at them.
   8  */
   9
  10 #define MAX_PHYS_ADDRESS        (1UL << MAX_PHYS_ADDRESS_BITS)
  11 #define KPTE_BITMAP_CHUNK_SZ            (256UL * 1024UL * 1024UL)
  12 #define KPTE_BITMAP_BYTES       \
  13         ((MAX_PHYS_ADDRESS / KPTE_BITMAP_CHUNK_SZ) / 4)
  14 #define VALID_ADDR_BITMAP_CHUNK_SZ      (4UL * 1024UL * 1024UL)
  15 #define VALID_ADDR_BITMAP_BYTES \
  16         ((MAX_PHYS_ADDRESS / VALID_ADDR_BITMAP_CHUNK_SZ) / 8)
  17
  18 extern unsigned long kern_linear_pte_xor[4];
  19 extern unsigned long kpte_linear_bitmap[KPTE_BITMAP_BYTES / sizeof(unsigned long)];
  20 extern unsigned int sparc64_highest_unlocked_tlb_ent;
  21 extern unsigned long sparc64_kern_pri_context;
  22 extern unsigned long sparc64_kern_pri_nuc_bits;
  23 extern unsigned long sparc64_kern_sec_context;
  24 extern void mmu_info(struct seq_file *m);
  25
  26 struct linux_prom_translation {
  27         unsigned long virt;
  28         unsigned long size;
  29         unsigned long data;
  30 };
  31
  32 /* Exported for kernel TLB miss handling in ktlb.S */
  33 extern struct linux_prom_translation prom_trans[512];
  34 extern unsigned int prom_trans_ents;
  35
  36 /* Exported for SMP bootup purposes. */
  37 extern unsigned long kern_locked_tte_data;
  38
  39 extern void prom_world(int enter);
  40
  41 #ifdef CONFIG_SPARSEMEM_VMEMMAP
  42 #define VMEMMAP_CHUNK_SHIFT     22
  43 #define VMEMMAP_CHUNK           (1UL << VMEMMAP_CHUNK_SHIFT)
  44 #define VMEMMAP_CHUNK_MASK      ~(VMEMMAP_CHUNK - 1UL)
  45 #define VMEMMAP_ALIGN(x)        (((x)+VMEMMAP_CHUNK-1UL)&VMEMMAP_CHUNK_MASK)
  46
  47 #define VMEMMAP_SIZE    ((((1UL << MAX_PHYSADDR_BITS) >> PAGE_SHIFT) * \
  48                           sizeof(struct page)) >> VMEMMAP_CHUNK_SHIFT)
  49 extern unsigned long vmemmap_table[VMEMMAP_SIZE];
  50 #endif
  51
  52 #endif /* _SPARC64_MM_INIT_H */