1 #ifndef _SPARC64_MM_INIT_H
2 #define _SPARC64_MM_INIT_H
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.
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)
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);
21 struct linux_prom_translation {
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;
31 /* Exported for SMP bootup purposes. */
32 extern unsigned long kern_locked_tte_data;
34 extern void prom_world(int enter);
36 extern void free_initmem(void);
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)
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];
49 #endif /* _SPARC64_MM_INIT_H */