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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2013-04-28 09:37:39 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-04-30 16:00:29 +1000 |
| commit | 1f6aaaccb1b3af8613fe45781c1aefee2ae8c6b3 (patch) | |
| tree | ad89dd4948e2a8b5df9466387583fa456d2261ca /arch/powerpc/mm | |
| parent | 3dc4feca4bf39d12f35a0e8c6997a8e188ab6cb8 (diff) | |
| download | blackbird-op-linux-1f6aaaccb1b3af8613fe45781c1aefee2ae8c6b3.tar.gz blackbird-op-linux-1f6aaaccb1b3af8613fe45781c1aefee2ae8c6b3.zip | |
powerpc: Update tlbie/tlbiel as per ISA doc
Encode the actual page correctly in tlbie/tlbiel. This make sure we handle
multiple page size segment correctly.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/hash_native_64.c | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c index bb920ee15627..6a2aead5b0e5 100644 --- a/arch/powerpc/mm/hash_native_64.c +++ b/arch/powerpc/mm/hash_native_64.c @@ -61,7 +61,10 @@ static inline void __tlbie(unsigned long vpn, int psize, int apsize, int ssize) switch (psize) { case MMU_PAGE_4K: + /* clear out bits after (52) [0....52.....63] */ + va &= ~((1ul << (64 - 52)) - 1); va |= ssize << 8; + va |= mmu_psize_defs[apsize].sllp << 6; asm volatile(ASM_FTR_IFCLR("tlbie %0,0", PPC_TLBIE(%1,%0), %2) : : "r" (va), "r"(0), "i" (CPU_FTR_ARCH_206) : "memory"); @@ -69,9 +72,20 @@ static inline void __tlbie(unsigned long vpn, int psize, int apsize, int ssize) default: /* We need 14 to 14 + i bits of va */ penc = mmu_psize_defs[psize].penc[apsize]; - va &= ~((1ul << mmu_psize_defs[psize].shift) - 1); + va &= ~((1ul << mmu_psize_defs[apsize].shift) - 1); va |= penc << 12; va |= ssize << 8; + /* Add AVAL part */ + if (psize != apsize) { + /* + * MPSS, 64K base page size and 16MB parge page size + * We don't need all the bits, but rest of the bits + * must be ignored by the processor. + * vpn cover upto 65 bits of va. (0...65) and we need + * 58..64 bits of va. + */ + va |= (vpn & 0xfe); + } va |= 1; /* L */ asm volatile(ASM_FTR_IFCLR("tlbie %0,1", PPC_TLBIE(%1,%0), %2) : : "r" (va), "r"(0), "i" (CPU_FTR_ARCH_206) @@ -96,16 +110,30 @@ static inline void __tlbiel(unsigned long vpn, int psize, int apsize, int ssize) switch (psize) { case MMU_PAGE_4K: + /* clear out bits after(52) [0....52.....63] */ + va &= ~((1ul << (64 - 52)) - 1); va |= ssize << 8; + va |= mmu_psize_defs[apsize].sllp << 6; asm volatile(".long 0x7c000224 | (%0 << 11) | (0 << 21)" : : "r"(va) : "memory"); break; default: /* We need 14 to 14 + i bits of va */ penc = mmu_psize_defs[psize].penc[apsize]; - va &= ~((1ul << mmu_psize_defs[psize].shift) - 1); + va &= ~((1ul << mmu_psize_defs[apsize].shift) - 1); va |= penc << 12; va |= ssize << 8; + /* Add AVAL part */ + if (psize != apsize) { + /* + * MPSS, 64K base page size and 16MB parge page size + * We don't need all the bits, but rest of the bits + * must be ignored by the processor. + * vpn cover upto 65 bits of va. (0...65) and we need + * 58..64 bits of va. + */ + va |= (vpn & 0xfe); + } va |= 1; /* L */ asm volatile(".long 0x7c000224 | (%0 << 11) | (1 << 21)" : : "r"(va) : "memory"); |
