diff options
| -rw-r--r-- | src/dev/arm/smmu_v3.cc | 2 | ||||
| -rw-r--r-- | src/dev/arm/smmu_v3_ptops.cc | 96 | ||||
| -rw-r--r-- | src/dev/arm/smmu_v3_ptops.hh | 13 |
3 files changed, 111 insertions, 0 deletions
diff --git a/src/dev/arm/smmu_v3.cc b/src/dev/arm/smmu_v3.cc index d913d55a0..7c4bd3673 100644 --- a/src/dev/arm/smmu_v3.cc +++ b/src/dev/arm/smmu_v3.cc @@ -531,10 +531,12 @@ const PageTableOps* SMMUv3::getPageTableOps(uint8_t trans_granule) { static V8PageTableOps4k ptOps4k; + static V8PageTableOps16k ptOps16k; static V8PageTableOps64k ptOps64k; switch (trans_granule) { case TRANS_GRANULE_4K: return &ptOps4k; + case TRANS_GRANULE_16K: return &ptOps16k; case TRANS_GRANULE_64K: return &ptOps64k; default: panic("Unknown translation granule size %d", trans_granule); diff --git a/src/dev/arm/smmu_v3_ptops.cc b/src/dev/arm/smmu_v3_ptops.cc index 6490b34c7..c57c16a3a 100644 --- a/src/dev/arm/smmu_v3_ptops.cc +++ b/src/dev/arm/smmu_v3_ptops.cc @@ -228,6 +228,102 @@ V8PageTableOps4k::lastLevel() const } bool +V8PageTableOps16k::isValid(pte_t pte, unsigned level) const +{ + switch (level) { + case 0: return pte & 0x1; + case 1: return pte & 0x1; + case 2: return pte & 0x1; + case 3: return (pte & 0x1) && (pte & 0x2); + default: panic("bad level %d", level); + } +} + +bool +V8PageTableOps16k::isLeaf(pte_t pte, unsigned level) const +{ + switch (level) { + case 0: return false; + case 1: return false; + case 2: return !(pte & 0x2); + case 3: return true; + default: panic("bad level %d", level); + } +} + +bool +V8PageTableOps16k::isWritable(pte_t pte, unsigned level, bool stage2) const +{ + return stage2 ? bits(pte, 7, 6) == 3 : bits(pte, 7) == 0; +} + +Addr +V8PageTableOps16k::nextLevelPointer(pte_t pte, unsigned level) const +{ + if (isLeaf(pte, level)) { + switch (level) { + // no level 0 here + case 1: return mbits(pte, 47, 36); + case 2: return mbits(pte, 47, 25); + case 3: return mbits(pte, 47, 14); + default: panic("bad level %d", level); + } + } else { + return mbits(pte, 47, 12); + } +} + +Addr +V8PageTableOps16k::index(Addr va, unsigned level) const +{ + switch (level) { + case 0: return bits(va, 47, 47) << 3; break; + case 1: return bits(va, 46, 36) << 3; break; + case 2: return bits(va, 35, 25) << 3; break; + case 3: return bits(va, 24, 14) << 3; break; + default: panic("bad level %d", level); + } +} + +Addr +V8PageTableOps16k::pageMask(pte_t pte, unsigned level) const +{ + switch (level) { + // no level 0 here + case 1: return ~mask(36); + // 16K granule supports contiguous entries also at L2; - 1G + case 2: return bits(pte, 52) ? ~mask(30) : ~mask(25); + // as well as at L3; - 2M + case 3: return bits(pte, 52) ? ~mask(21) : ~mask(14); + default: panic("bad level %d", level); + } +} + +Addr +V8PageTableOps16k::walkMask(unsigned level) const +{ + switch (level) { + case 0: return ~mask(47); + case 1: return ~mask(36); + case 2: return ~mask(25); + case 3: return ~mask(14); + default: panic("bad level %d", level); + } +} + +unsigned +V8PageTableOps16k::firstLevel() const +{ + return 0; +} + +unsigned +V8PageTableOps16k::lastLevel() const +{ + return 3; +} + +bool V8PageTableOps64k::isValid(pte_t pte, unsigned level) const { switch (level) { diff --git a/src/dev/arm/smmu_v3_ptops.hh b/src/dev/arm/smmu_v3_ptops.hh index ef9ef0409..1b8c22c4d 100644 --- a/src/dev/arm/smmu_v3_ptops.hh +++ b/src/dev/arm/smmu_v3_ptops.hh @@ -85,6 +85,19 @@ struct V8PageTableOps4k : public PageTableOps virtual unsigned lastLevel() const; }; +struct V8PageTableOps16k : public PageTableOps +{ + virtual bool isValid(pte_t pte, unsigned level) const; + virtual bool isLeaf(pte_t pte, unsigned level) const; + virtual bool isWritable(pte_t pte, unsigned level, bool stage2) const; + virtual Addr nextLevelPointer(pte_t pte, unsigned level) const; + virtual Addr index(Addr va, unsigned level) const; + virtual Addr pageMask(pte_t pte, unsigned level) const; + virtual Addr walkMask(unsigned level) const; + virtual unsigned firstLevel() const; + virtual unsigned lastLevel() const; +}; + struct V8PageTableOps64k : public PageTableOps { virtual bool isValid(pte_t pte, unsigned level) const; |