arch/powerpc/include/asm/mmu.h

   1 #ifndef _ASM_POWERPC_MMU_H_
   2 #define _ASM_POWERPC_MMU_H_
   3 #ifdef __KERNEL__
   4
   5 #include <asm/asm-compat.h>
   6 #include <asm/feature-fixups.h>
   7
   8 /*
   9  * MMU features bit definitions
  10  */
  11
  12 /*
  13  * First half is MMU families
  14  */
  15 #define MMU_FTR_HPTE_TABLE              ASM_CONST(0x00000001)
  16 #define MMU_FTR_TYPE_8xx                ASM_CONST(0x00000002)
  17 #define MMU_FTR_TYPE_40x                ASM_CONST(0x00000004)
  18 #define MMU_FTR_TYPE_44x                ASM_CONST(0x00000008)
  19 #define MMU_FTR_TYPE_FSL_E              ASM_CONST(0x00000010)
  20
  21 /*
  22  * This is individual features
  23  */
  24
  25 /* Enable use of high BAT registers */
  26 #define MMU_FTR_USE_HIGH_BATS           ASM_CONST(0x00010000)
  27
  28 /* Enable >32-bit physical addresses on 32-bit processor, only used
  29  * by CONFIG_6xx currently as BookE supports that from day 1
  30  */
  31 #define MMU_FTR_BIG_PHYS                ASM_CONST(0x00020000)
  32
  33 #ifndef __ASSEMBLY__
  34 #include <asm/cputable.h>
  35
  36 static inline int mmu_has_feature(unsigned long feature)
  37 {
  38         return (cur_cpu_spec->mmu_features & feature);
  39 }
  40
  41 extern unsigned int __start___mmu_ftr_fixup, __stop___mmu_ftr_fixup;
  42
  43 #endif /* !__ASSEMBLY__ */
  44
  45
  46 #ifdef CONFIG_PPC64
  47 /* 64-bit classic hash table MMU */
  48 #  include <asm/mmu-hash64.h>
  49 #elif defined(CONFIG_PPC_STD_MMU)
  50 /* 32-bit classic hash table MMU */
  51 #  include <asm/mmu-hash32.h>
  52 #elif defined(CONFIG_40x)
  53 /* 40x-style software loaded TLB */
  54 #  include <asm/mmu-40x.h>
  55 #elif defined(CONFIG_44x)
  56 /* 44x-style software loaded TLB */
  57 #  include <asm/mmu-44x.h>
  58 #elif defined(CONFIG_FSL_BOOKE)
  59 /* Freescale Book-E software loaded TLB */
  60 #  include <asm/mmu-fsl-booke.h>
  61 #elif defined (CONFIG_PPC_8xx)
  62 /* Motorola/Freescale 8xx software loaded TLB */
  63 #  include <asm/mmu-8xx.h>
  64 #endif
  65
  66 #endif /* __KERNEL__ */
  67 #endif /* _ASM_POWERPC_MMU_H_ */