diff options
Diffstat (limited to 'arch/powerpc/include/asm/mmu-hash64.h')
| -rw-r--r-- | arch/powerpc/include/asm/mmu-hash64.h | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h index de9e577f329c..18171a86bff6 100644 --- a/arch/powerpc/include/asm/mmu-hash64.h +++ b/arch/powerpc/include/asm/mmu-hash64.h @@ -155,7 +155,7 @@ extern unsigned long htab_hash_mask; struct mmu_psize_def { unsigned int shift; /* number of bits */ - unsigned int penc; /* HPTE encoding */ + int penc[MMU_PAGE_COUNT]; /* HPTE encoding */ unsigned int tlbiel; /* tlbiel supported for that page size */ unsigned long avpnm; /* bits to mask out in AVPN in the HPTE */ unsigned long sllp; /* SLB L||LP (exact mask to use in slbmte) */ @@ -200,6 +200,13 @@ static inline unsigned int mmu_psize_to_shift(unsigned int mmu_psize) */ #define VPN_SHIFT 12 +/* + * HPTE Large Page (LP) details + */ +#define LP_SHIFT 12 +#define LP_BITS 8 +#define LP_MASK(i) ((0xFF >> (i)) << LP_SHIFT) + #ifndef __ASSEMBLY__ static inline int segment_shift(int ssize) @@ -255,14 +262,14 @@ static inline unsigned long hpte_encode_avpn(unsigned long vpn, int psize, /* * This function sets the AVPN and L fields of the HPTE appropriately - * for the page size + * using the base page size and actual page size. */ -static inline unsigned long hpte_encode_v(unsigned long vpn, - int psize, int ssize) +static inline unsigned long hpte_encode_v(unsigned long vpn, int base_psize, + int actual_psize, int ssize) { unsigned long v; - v = hpte_encode_avpn(vpn, psize, ssize); - if (psize != MMU_PAGE_4K) + v = hpte_encode_avpn(vpn, base_psize, ssize); + if (actual_psize != MMU_PAGE_4K) v |= HPTE_V_LARGE; return v; } @@ -272,19 +279,17 @@ static inline unsigned long hpte_encode_v(unsigned long vpn, * for the page size. We assume the pa is already "clean" that is properly * aligned for the requested page size */ -static inline unsigned long hpte_encode_r(unsigned long pa, int psize) +static inline unsigned long hpte_encode_r(unsigned long pa, int base_psize, + int actual_psize) { - unsigned long r; - /* A 4K page needs no special encoding */ - if (psize == MMU_PAGE_4K) + if (actual_psize == MMU_PAGE_4K) return pa & HPTE_R_RPN; else { - unsigned int penc = mmu_psize_defs[psize].penc; - unsigned int shift = mmu_psize_defs[psize].shift; - return (pa & ~((1ul << shift) - 1)) | (penc << 12); + unsigned int penc = mmu_psize_defs[base_psize].penc[actual_psize]; + unsigned int shift = mmu_psize_defs[actual_psize].shift; + return (pa & ~((1ul << shift) - 1)) | (penc << LP_SHIFT); } - return r; } /* |