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 */ 50