/arch/powerpc/mm/mmu_decl.h

http://github.com/mirrors/linux · C Header · 189 lines · 136 code · 26 blank · 27 comment · 5 complexity · 5f6b991e53dee51d2ed949ed0bb1ff94 MD5 · raw file

  1. /* SPDX-License-Identifier: GPL-2.0-or-later */
  2. /*
  3. * Declarations of procedures and variables shared between files
  4. * in arch/ppc/mm/.
  5. *
  6. * Derived from arch/ppc/mm/init.c:
  7. * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
  8. *
  9. * Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au)
  10. * and Cort Dougan (PReP) (cort@cs.nmt.edu)
  11. * Copyright (C) 1996 Paul Mackerras
  12. *
  13. * Derived from "arch/i386/mm/init.c"
  14. * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
  15. */
  16. #include <linux/mm.h>
  17. #include <asm/mmu.h>
  18. #ifdef CONFIG_PPC_MMU_NOHASH
  19. #include <asm/trace.h>
  20. /*
  21. * On 40x and 8xx, we directly inline tlbia and tlbivax
  22. */
  23. #if defined(CONFIG_40x) || defined(CONFIG_PPC_8xx)
  24. static inline void _tlbil_all(void)
  25. {
  26. asm volatile ("sync; tlbia; isync" : : : "memory");
  27. trace_tlbia(MMU_NO_CONTEXT);
  28. }
  29. static inline void _tlbil_pid(unsigned int pid)
  30. {
  31. asm volatile ("sync; tlbia; isync" : : : "memory");
  32. trace_tlbia(pid);
  33. }
  34. #define _tlbil_pid_noind(pid) _tlbil_pid(pid)
  35. #else /* CONFIG_40x || CONFIG_PPC_8xx */
  36. extern void _tlbil_all(void);
  37. extern void _tlbil_pid(unsigned int pid);
  38. #ifdef CONFIG_PPC_BOOK3E
  39. extern void _tlbil_pid_noind(unsigned int pid);
  40. #else
  41. #define _tlbil_pid_noind(pid) _tlbil_pid(pid)
  42. #endif
  43. #endif /* !(CONFIG_40x || CONFIG_PPC_8xx) */
  44. /*
  45. * On 8xx, we directly inline tlbie, on others, it's extern
  46. */
  47. #ifdef CONFIG_PPC_8xx
  48. static inline void _tlbil_va(unsigned long address, unsigned int pid,
  49. unsigned int tsize, unsigned int ind)
  50. {
  51. asm volatile ("tlbie %0; sync" : : "r" (address) : "memory");
  52. trace_tlbie(0, 0, address, pid, 0, 0, 0);
  53. }
  54. #elif defined(CONFIG_PPC_BOOK3E)
  55. extern void _tlbil_va(unsigned long address, unsigned int pid,
  56. unsigned int tsize, unsigned int ind);
  57. #else
  58. extern void __tlbil_va(unsigned long address, unsigned int pid);
  59. static inline void _tlbil_va(unsigned long address, unsigned int pid,
  60. unsigned int tsize, unsigned int ind)
  61. {
  62. __tlbil_va(address, pid);
  63. }
  64. #endif /* CONFIG_PPC_8xx */
  65. #if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_PPC_47x)
  66. extern void _tlbivax_bcast(unsigned long address, unsigned int pid,
  67. unsigned int tsize, unsigned int ind);
  68. #else
  69. static inline void _tlbivax_bcast(unsigned long address, unsigned int pid,
  70. unsigned int tsize, unsigned int ind)
  71. {
  72. BUG();
  73. }
  74. #endif
  75. static inline void print_system_hash_info(void) {}
  76. #else /* CONFIG_PPC_MMU_NOHASH */
  77. extern void _tlbie(unsigned long address);
  78. extern void _tlbia(void);
  79. void print_system_hash_info(void);
  80. #endif /* CONFIG_PPC_MMU_NOHASH */
  81. #ifdef CONFIG_PPC32
  82. void hash_preload(struct mm_struct *mm, unsigned long ea);
  83. extern void mapin_ram(void);
  84. extern void setbat(int index, unsigned long virt, phys_addr_t phys,
  85. unsigned int size, pgprot_t prot);
  86. extern int __map_without_bats;
  87. extern unsigned int rtas_data, rtas_size;
  88. struct hash_pte;
  89. extern struct hash_pte *Hash;
  90. extern u8 early_hash[];
  91. #endif /* CONFIG_PPC32 */
  92. extern unsigned long __max_low_memory;
  93. extern phys_addr_t __initial_memory_limit_addr;
  94. extern phys_addr_t total_memory;
  95. extern phys_addr_t total_lowmem;
  96. extern phys_addr_t memstart_addr;
  97. extern phys_addr_t lowmem_end_addr;
  98. #ifdef CONFIG_WII
  99. extern unsigned long wii_hole_start;
  100. extern unsigned long wii_hole_size;
  101. extern unsigned long wii_mmu_mapin_mem2(unsigned long top);
  102. extern void wii_memory_fixups(void);
  103. #endif
  104. /* ...and now those things that may be slightly different between processor
  105. * architectures. -- Dan
  106. */
  107. #ifdef CONFIG_PPC32
  108. extern void MMU_init_hw(void);
  109. void MMU_init_hw_patch(void);
  110. unsigned long mmu_mapin_ram(unsigned long base, unsigned long top);
  111. #endif
  112. #ifdef CONFIG_PPC_FSL_BOOK3E
  113. extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx,
  114. bool dryrun);
  115. extern unsigned long calc_cam_sz(unsigned long ram, unsigned long virt,
  116. phys_addr_t phys);
  117. #ifdef CONFIG_PPC32
  118. extern void adjust_total_lowmem(void);
  119. extern int switch_to_as1(void);
  120. extern void restore_to_as0(int esel, int offset, void *dt_ptr, int bootcpu);
  121. void create_kaslr_tlb_entry(int entry, unsigned long virt, phys_addr_t phys);
  122. void reloc_kernel_entry(void *fdt, int addr);
  123. extern int is_second_reloc;
  124. #endif
  125. extern void loadcam_entry(unsigned int index);
  126. extern void loadcam_multi(int first_idx, int num, int tmp_idx);
  127. #ifdef CONFIG_RANDOMIZE_BASE
  128. void kaslr_early_init(void *dt_ptr, phys_addr_t size);
  129. void kaslr_late_init(void);
  130. #else
  131. static inline void kaslr_early_init(void *dt_ptr, phys_addr_t size) {}
  132. static inline void kaslr_late_init(void) {}
  133. #endif
  134. struct tlbcam {
  135. u32 MAS0;
  136. u32 MAS1;
  137. unsigned long MAS2;
  138. u32 MAS3;
  139. u32 MAS7;
  140. };
  141. #endif
  142. #if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_FSL_BOOKE) || defined(CONFIG_PPC_8xx)
  143. /* 6xx have BATS */
  144. /* FSL_BOOKE have TLBCAM */
  145. /* 8xx have LTLB */
  146. phys_addr_t v_block_mapped(unsigned long va);
  147. unsigned long p_block_mapped(phys_addr_t pa);
  148. #else
  149. static inline phys_addr_t v_block_mapped(unsigned long va) { return 0; }
  150. static inline unsigned long p_block_mapped(phys_addr_t pa) { return 0; }
  151. #endif
  152. #if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_PPC_8xx)
  153. void mmu_mark_initmem_nx(void);
  154. void mmu_mark_rodata_ro(void);
  155. #else
  156. static inline void mmu_mark_initmem_nx(void) { }
  157. static inline void mmu_mark_rodata_ro(void) { }
  158. #endif
  159. #ifdef CONFIG_PPC_DEBUG_WX
  160. void ptdump_check_wx(void);
  161. #else
  162. static inline void ptdump_check_wx(void) { }
  163. #endif