1 #ifndef _ASM_POWERPC_MMU_HASH32_H_
2 #define _ASM_POWERPC_MMU_HASH32_H_
4 * 32-bit hash table MMU support
11 /* Block size masks */
25 /* BAT Access Protection */
26 #define BPP_XX 0x00 /* No access */
27 #define BPP_RX 0x01 /* Read only */
28 #define BPP_RW 0x02 /* Read/write */
31 /* Contort a phys_addr_t into the right format/bits for a BAT */
32 #ifdef CONFIG_PHYS_64BIT
33 #define BAT_PHYS_ADDR(x) ((u32)((x & 0x00000000fffe0000ULL) | \
34 ((x & 0x0000000e00000000ULL) >> 24) | \
35 ((x & 0x0000000100000000ULL) >> 30)))
37 #define BAT_PHYS_ADDR(x) (x)
44 #endif /* !__ASSEMBLY__ */
50 /* Values for PP (assumes Ks=0, Kp=1) */
51 #define PP_RWXX 0 /* Supervisor read/write, User none */
52 #define PP_RWRX 1 /* Supervisor read/write, User read */
53 #define PP_RWRW 2 /* Supervisor read/write, User read/write */
54 #define PP_RXRX 3 /* Supervisor read, User read */
58 /* Hardware Page Table Entry */
60 unsigned long v:1; /* Entry is valid */
61 unsigned long vsid:24; /* Virtual segment identifier */
62 unsigned long h:1; /* Hash algorithm indicator */
63 unsigned long api:6; /* Abbreviated page index */
64 unsigned long rpn:20; /* Real (physical) page number */
65 unsigned long :3; /* Unused */
66 unsigned long r:1; /* Referenced */
67 unsigned long c:1; /* Changed */
68 unsigned long w:1; /* Write-thru cache mode */
69 unsigned long i:1; /* Cache inhibited */
70 unsigned long m:1; /* Memory coherence */
71 unsigned long g:1; /* Guarded */
72 unsigned long :1; /* Unused */
73 unsigned long pp:2; /* Page protection */
78 unsigned long vdso_base;
81 #endif /* !__ASSEMBLY__ */
83 #endif /* _ASM_POWERPC_MMU_HASH32_H_ */